Merge tag 'lsk-v4.4-16.06-android'

[firefly-linux-kernel-4.4.55.git] / drivers / net / wireless / rockchip_wlan / rkwifi / bcmdhd / dhd_linux.c

/*
 * Broadcom Dongle Host Driver (DHD), Linux-specific network interface
 * Basically selected code segments from usb-cdc.c and usb-rndis.c
 *
 * Copyright (C) 1999-2016, Broadcom Corporation
 * 
 *      Unless you and Broadcom execute a separate written software license
 * agreement governing use of this software, this software is licensed to you
 * under the terms of the GNU General Public License version 2 (the "GPL"),
 * available at http://www.broadcom.com/licenses/GPLv2.php, with the
 * following added to such license:
 * 
 *      As a special exception, the copyright holders of this software give you
 * permission to link this software with independent modules, and to copy and
 * distribute the resulting executable under terms of your choice, provided that
 * you also meet, for each linked independent module, the terms and conditions of
 * the license of that module.  An independent module is a module which is not
 * derived from this software.  The special exception does not apply to any
 * modifications of the software.
 * 
 *      Notwithstanding the above, under no circumstances may you combine this
 * software in any way with any other Broadcom software provided under a license
 * other than the GPL, without Broadcom's express prior written consent.
 *
 *
 * <<Broadcom-WL-IPTag/Open:>>
 *
 * $Id: dhd_linux.c 609723 2016-01-05 08:40:45Z $
 */

#include <typedefs.h>
#include <linuxver.h>
#include <osl.h>
#ifdef SHOW_LOGTRACE
#include <linux/syscalls.h>
#include <event_log.h>
#endif /* SHOW_LOGTRACE */


#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/slab.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#include <linux/inetdevice.h>
#include <linux/rtnetlink.h>
#include <linux/etherdevice.h>
#include <linux/random.h>
#include <linux/spinlock.h>
#include <linux/ethtool.h>
#include <linux/fcntl.h>
#include <linux/fs.h>
#include <linux/ip.h>
#include <linux/reboot.h>
#include <linux/notifier.h>
#include <net/addrconf.h>
#ifdef ENABLE_ADAPTIVE_SCHED
#include <linux/cpufreq.h>
#endif /* ENABLE_ADAPTIVE_SCHED */

#include <asm/uaccess.h>
#include <asm/unaligned.h>

#include <epivers.h>
#include <bcmutils.h>
#include <bcmendian.h>
#include <bcmdevs.h>

#include <proto/ethernet.h>
#include <proto/bcmevent.h>
#include <proto/vlan.h>
#include <proto/802.3.h>

#include <dngl_stats.h>
#include <dhd_linux_wq.h>
#include <dhd.h>
#include <dhd_linux.h>
#ifdef PCIE_FULL_DONGLE
#include <dhd_flowring.h>
#endif
#include <dhd_bus.h>
#include <dhd_proto.h>
#include <dhd_config.h>
#include <dhd_dbg.h>
#ifdef CONFIG_HAS_WAKELOCK
#include <linux/wakelock.h>
#endif
#ifdef WL_CFG80211
#include <wl_cfg80211.h>
#endif
#ifdef PNO_SUPPORT
#include <dhd_pno.h>
#endif
#ifdef RTT_SUPPORT
#include <dhd_rtt.h>
#endif

#ifdef CONFIG_COMPAT
#include <linux/compat.h>
#endif

#ifdef DHD_WMF
#include <dhd_wmf_linux.h>
#endif /* DHD_WMF */

#ifdef DHD_L2_FILTER
#include <proto/bcmicmp.h>
#include <bcm_l2_filter.h>
#include <dhd_l2_filter.h>
#endif /* DHD_L2_FILTER */

#ifdef DHD_PSTA
#include <dhd_psta.h>
#endif /* DHD_PSTA */


#ifdef DHDTCPACK_SUPPRESS
#include <dhd_ip.h>
#endif /* DHDTCPACK_SUPPRESS */

#ifdef DHD_DEBUG_PAGEALLOC
typedef void (*page_corrupt_cb_t)(void *handle, void *addr_corrupt, size_t len);
void dhd_page_corrupt_cb(void *handle, void *addr_corrupt, size_t len);
extern void register_page_corrupt_cb(page_corrupt_cb_t cb, void* handle);
#endif /* DHD_DEBUG_PAGEALLOC */


#if defined(DHD_LB)
/* Dynamic CPU selection for load balancing */
#include <linux/cpu.h>
#include <linux/cpumask.h>
#include <linux/notifier.h>
#include <linux/workqueue.h>
#include <asm/atomic.h>

#if !defined(DHD_LB_PRIMARY_CPUS)
#define DHD_LB_PRIMARY_CPUS     0x0 /* Big CPU coreids mask */
#endif

#if !defined(DHD_LB_SECONDARY_CPUS)
#define DHD_LB_SECONDARY_CPUS   0xFE /* Little CPU coreids mask */
#endif

#define HIST_BIN_SIZE   8

#if defined(DHD_LB_RXP)
static void dhd_rx_napi_dispatcher_fn(struct work_struct * work);
#endif /* DHD_LB_RXP */

#endif /* DHD_LB */

#ifdef WLMEDIA_HTSF
#include <linux/time.h>
#include <htsf.h>

#define HTSF_MINLEN 200    /* min. packet length to timestamp */
#define HTSF_BUS_DELAY 150 /* assume a fix propagation in us  */
#define TSMAX  1000        /* max no. of timing record kept   */
#define NUMBIN 34

static uint32 tsidx = 0;
static uint32 htsf_seqnum = 0;
uint32 tsfsync;
struct timeval tsync;
static uint32 tsport = 5010;

typedef struct histo_ {
        uint32 bin[NUMBIN];
} histo_t;

#if !ISPOWEROF2(DHD_SDALIGN)
#error DHD_SDALIGN is not a power of 2!
#endif

static histo_t vi_d1, vi_d2, vi_d3, vi_d4;
#endif /* WLMEDIA_HTSF */

#ifdef STBLINUX
#ifdef quote_str
#undef quote_str
#endif /* quote_str */
#ifdef to_str
#undef to_str
#endif /* quote_str */
#define to_str(s) #s
#define quote_str(s) to_str(s)

static char *driver_target = "driver_target: "quote_str(BRCM_DRIVER_TARGET);
#endif /* STBLINUX */


#if defined(SOFTAP)
extern bool ap_cfg_running;
extern bool ap_fw_loaded;
#endif
extern void dhd_dump_eapol_4way_message(char *ifname, char *dump_data, bool direction);

#ifdef FIX_CPU_MIN_CLOCK
#include <linux/pm_qos.h>
#endif /* FIX_CPU_MIN_CLOCK */
#ifdef SET_RANDOM_MAC_SOFTAP
#ifndef CONFIG_DHD_SET_RANDOM_MAC_VAL
#define CONFIG_DHD_SET_RANDOM_MAC_VAL   0x001A11
#endif
static u32 vendor_oui = CONFIG_DHD_SET_RANDOM_MAC_VAL;
#endif /* SET_RANDOM_MAC_SOFTAP */
#ifdef ENABLE_ADAPTIVE_SCHED
#define DEFAULT_CPUFREQ_THRESH          1000000 /* threshold frequency : 1000000 = 1GHz */
#ifndef CUSTOM_CPUFREQ_THRESH
#define CUSTOM_CPUFREQ_THRESH   DEFAULT_CPUFREQ_THRESH
#endif /* CUSTOM_CPUFREQ_THRESH */
#endif /* ENABLE_ADAPTIVE_SCHED */

/* enable HOSTIP cache update from the host side when an eth0:N is up */
#define AOE_IP_ALIAS_SUPPORT 1

#ifdef BCM_FD_AGGR
#include <bcm_rpc.h>
#include <bcm_rpc_tp.h>
#endif
#ifdef PROP_TXSTATUS
#include <wlfc_proto.h>
#include <dhd_wlfc.h>
#endif

#include <wl_android.h>

/* Maximum STA per radio */
#define DHD_MAX_STA     32



const uint8 wme_fifo2ac[] = { 0, 1, 2, 3, 1, 1 };
const uint8 prio2fifo[8] = { 1, 0, 0, 1, 2, 2, 3, 3 };
#define WME_PRIO2AC(prio)  wme_fifo2ac[prio2fifo[(prio)]]

#ifdef ARP_OFFLOAD_SUPPORT
void aoe_update_host_ipv4_table(dhd_pub_t *dhd_pub, u32 ipa, bool add, int idx);
static int dhd_inetaddr_notifier_call(struct notifier_block *this,
        unsigned long event, void *ptr);
static struct notifier_block dhd_inetaddr_notifier = {
        .notifier_call = dhd_inetaddr_notifier_call
};
/* to make sure we won't register the same notifier twice, otherwise a loop is likely to be
 * created in kernel notifier link list (with 'next' pointing to itself)
 */
static bool dhd_inetaddr_notifier_registered = FALSE;
#endif /* ARP_OFFLOAD_SUPPORT */

#if defined(CONFIG_IPV6) && defined(IPV6_NDO_SUPPORT)
static int dhd_inet6addr_notifier_call(struct notifier_block *this,
        unsigned long event, void *ptr);
static struct notifier_block dhd_inet6addr_notifier = {
        .notifier_call = dhd_inet6addr_notifier_call
};
/* to make sure we won't register the same notifier twice, otherwise a loop is likely to be
 * created in kernel notifier link list (with 'next' pointing to itself)
 */
static bool dhd_inet6addr_notifier_registered = FALSE;
#endif /* CONFIG_IPV6 && IPV6_NDO_SUPPORT */

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) && defined(CONFIG_PM_SLEEP)
#include <linux/suspend.h>
volatile bool dhd_mmc_suspend = FALSE;
DECLARE_WAIT_QUEUE_HEAD(dhd_dpc_wait);
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) && defined(CONFIG_PM_SLEEP) */

#if defined(OOB_INTR_ONLY) || defined(FORCE_WOWLAN)
extern void dhd_enable_oob_intr(struct dhd_bus *bus, bool enable);
#endif 
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
static void dhd_hang_process(void *dhd_info, void *event_data, u8 event);
#endif 
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0))
MODULE_LICENSE("GPL and additional rights");
#endif /* LinuxVer */

#include <dhd_bus.h>

#ifdef BCM_FD_AGGR
#define DBUS_RX_BUFFER_SIZE_DHD(net)    (BCM_RPC_TP_DNGL_AGG_MAX_BYTE)
#else
#ifndef PROP_TXSTATUS
#define DBUS_RX_BUFFER_SIZE_DHD(net)    (net->mtu + net->hard_header_len + dhd->pub.hdrlen)
#else
#define DBUS_RX_BUFFER_SIZE_DHD(net)    (net->mtu + net->hard_header_len + dhd->pub.hdrlen + 128)
#endif
#endif /* BCM_FD_AGGR */

#ifdef PROP_TXSTATUS
extern bool dhd_wlfc_skip_fc(void);
extern void dhd_wlfc_plat_init(void *dhd);
extern void dhd_wlfc_plat_deinit(void *dhd);
#endif /* PROP_TXSTATUS */
#ifdef USE_DYNAMIC_F2_BLKSIZE
extern uint sd_f2_blocksize;
extern int dhdsdio_func_blocksize(dhd_pub_t *dhd, int function_num, int block_size);
#endif /* USE_DYNAMIC_F2_BLKSIZE */

#if LINUX_VERSION_CODE == KERNEL_VERSION(2, 6, 15)
const char *
print_tainted()
{
        return "";
}
#endif  /* LINUX_VERSION_CODE == KERNEL_VERSION(2, 6, 15) */

/* Linux wireless extension support */
#if defined(WL_WIRELESS_EXT)
#include <wl_iw.h>
extern wl_iw_extra_params_t  g_wl_iw_params;
#endif /* defined(WL_WIRELESS_EXT) */

#ifdef CONFIG_PARTIALSUSPEND_SLP
#include <linux/partialsuspend_slp.h>
#define CONFIG_HAS_EARLYSUSPEND
#define DHD_USE_EARLYSUSPEND
#define register_early_suspend          register_pre_suspend
#define unregister_early_suspend        unregister_pre_suspend
#define early_suspend                           pre_suspend
#define EARLY_SUSPEND_LEVEL_BLANK_SCREEN                50
#else
#if defined(CONFIG_HAS_EARLYSUSPEND) && defined(DHD_USE_EARLYSUSPEND)
#include <linux/earlysuspend.h>
#endif /* defined(CONFIG_HAS_EARLYSUSPEND) && defined(DHD_USE_EARLYSUSPEND) */
#endif /* CONFIG_PARTIALSUSPEND_SLP */

extern int dhd_get_suspend_bcn_li_dtim(dhd_pub_t *dhd);

#ifdef PKT_FILTER_SUPPORT
extern void dhd_pktfilter_offload_set(dhd_pub_t * dhd, char *arg);
extern void dhd_pktfilter_offload_enable(dhd_pub_t * dhd, char *arg, int enable, int master_mode);
extern void dhd_pktfilter_offload_delete(dhd_pub_t *dhd, int id);
#endif


#ifdef READ_MACADDR
extern int dhd_read_macaddr(struct dhd_info *dhd);
#else
static inline int dhd_read_macaddr(struct dhd_info *dhd) { return 0; }
#endif
#ifdef WRITE_MACADDR
extern int dhd_write_macaddr(struct ether_addr *mac);
#else
static inline int dhd_write_macaddr(struct ether_addr *mac) { return 0; }
#endif





#ifdef DHD_FW_COREDUMP
static void dhd_mem_dump(void *dhd_info, void *event_info, u8 event);
#endif /* DHD_FW_COREDUMP */
#ifdef DHD_LOG_DUMP
static void dhd_log_dump_init(dhd_pub_t *dhd);
static void dhd_log_dump_deinit(dhd_pub_t *dhd);
static void dhd_log_dump(void *handle, void *event_info, u8 event);
void dhd_schedule_log_dump(dhd_pub_t *dhdp);
static int do_dhd_log_dump(dhd_pub_t *dhdp);
#endif /* DHD_LOG_DUMP */

static int dhd_reboot_callback(struct notifier_block *this, unsigned long code, void *unused);
static struct notifier_block dhd_reboot_notifier = {
        .notifier_call = dhd_reboot_callback,
        .priority = 1,
};

#ifdef BCMPCIE
static int is_reboot = 0;
#endif /* BCMPCIE */

typedef struct dhd_if_event {
        struct list_head        list;
        wl_event_data_if_t      event;
        char                    name[IFNAMSIZ+1];
        uint8                   mac[ETHER_ADDR_LEN];
} dhd_if_event_t;

/* Interface control information */
typedef struct dhd_if {
        struct dhd_info *info;                  /* back pointer to dhd_info */
        /* OS/stack specifics */
        struct net_device *net;
        int                             idx;                    /* iface idx in dongle */
        uint                    subunit;                /* subunit */
        uint8                   mac_addr[ETHER_ADDR_LEN];       /* assigned MAC address */
        bool                    set_macaddress;
        bool                    set_multicast;
        uint8                   bssidx;                 /* bsscfg index for the interface */
        bool                    attached;               /* Delayed attachment when unset */
        bool                    txflowcontrol;  /* Per interface flow control indicator */
        char                    name[IFNAMSIZ+1]; /* linux interface name */
        char                    dngl_name[IFNAMSIZ+1]; /* corresponding dongle interface name */
        struct net_device_stats stats;
#ifdef DHD_WMF
        dhd_wmf_t               wmf;            /* per bsscfg wmf setting */
#endif /* DHD_WMF */
#ifdef PCIE_FULL_DONGLE
        struct list_head sta_list;              /* sll of associated stations */
#if !defined(BCM_GMAC3)
        spinlock_t      sta_list_lock;          /* lock for manipulating sll */
#endif /* ! BCM_GMAC3 */
#endif /* PCIE_FULL_DONGLE */
        uint32  ap_isolate;                     /* ap-isolation settings */
#ifdef DHD_L2_FILTER
        bool parp_enable;
        bool parp_discard;
        bool parp_allnode;
        arp_table_t *phnd_arp_table;
/* for Per BSS modification */
        bool dhcp_unicast;
        bool block_ping;
        bool grat_arp;
#endif /* DHD_L2_FILTER */
} dhd_if_t;

#ifdef WLMEDIA_HTSF
typedef struct {
        uint32 low;
        uint32 high;
} tsf_t;

typedef struct {
        uint32 last_cycle;
        uint32 last_sec;
        uint32 last_tsf;
        uint32 coef;     /* scaling factor */
        uint32 coefdec1; /* first decimal  */
        uint32 coefdec2; /* second decimal */
} htsf_t;

typedef struct {
        uint32 t1;
        uint32 t2;
        uint32 t3;
        uint32 t4;
} tstamp_t;

static tstamp_t ts[TSMAX];
static tstamp_t maxdelayts;
static uint32 maxdelay = 0, tspktcnt = 0, maxdelaypktno = 0;

#endif  /* WLMEDIA_HTSF */

struct ipv6_work_info_t {
        uint8                   if_idx;
        char                    ipv6_addr[16];
        unsigned long           event;
};

#ifdef DHD_DEBUG
typedef struct dhd_dump {
        uint8 *buf;
        int bufsize;
} dhd_dump_t;
#endif /* DHD_DEBUG */

/* When Perimeter locks are deployed, any blocking calls must be preceeded
 * with a PERIM UNLOCK and followed by a PERIM LOCK.
 * Examples of blocking calls are: schedule_timeout(), down_interruptible(),
 * wait_event_timeout().
 */

/* Local private structure (extension of pub) */
typedef struct dhd_info {
#if defined(WL_WIRELESS_EXT)
        wl_iw_t         iw;             /* wireless extensions state (must be first) */
#endif /* defined(WL_WIRELESS_EXT) */
        dhd_pub_t pub;
        dhd_if_t *iflist[DHD_MAX_IFS]; /* for supporting multiple interfaces */

        void *adapter;                  /* adapter information, interrupt, fw path etc. */
        char fw_path[PATH_MAX];         /* path to firmware image */
        char nv_path[PATH_MAX];         /* path to nvram vars file */
        char conf_path[PATH_MAX];       /* path to config vars file */

        /* serialize dhd iovars */
        struct mutex dhd_iovar_mutex;

        struct semaphore proto_sem;
#ifdef PROP_TXSTATUS
        spinlock_t      wlfc_spinlock;

#endif /* PROP_TXSTATUS */
#ifdef WLMEDIA_HTSF
        htsf_t  htsf;
#endif
        wait_queue_head_t ioctl_resp_wait;
        wait_queue_head_t d3ack_wait;
        wait_queue_head_t dhd_bus_busy_state_wait;
        uint32  default_wd_interval;

        struct timer_list timer;
        bool wd_timer_valid;
#ifdef DHD_PCIE_RUNTIMEPM
        struct timer_list rpm_timer;
        bool rpm_timer_valid;
        tsk_ctl_t         thr_rpm_ctl;
#endif /* DHD_PCIE_RUNTIMEPM */
        struct tasklet_struct tasklet;
        spinlock_t      sdlock;
        spinlock_t      txqlock;
        spinlock_t      dhd_lock;

        struct semaphore sdsem;
        tsk_ctl_t       thr_dpc_ctl;
        tsk_ctl_t       thr_wdt_ctl;

        tsk_ctl_t       thr_rxf_ctl;
        spinlock_t      rxf_lock;
        bool            rxthread_enabled;

        /* Wakelocks */
#if defined(CONFIG_HAS_WAKELOCK) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
        struct wake_lock wl_wifi;   /* Wifi wakelock */
        struct wake_lock wl_rxwake; /* Wifi rx wakelock */
        struct wake_lock wl_ctrlwake; /* Wifi ctrl wakelock */
        struct wake_lock wl_wdwake; /* Wifi wd wakelock */
        struct wake_lock wl_evtwake; /* Wifi event wakelock */
#ifdef BCMPCIE_OOB_HOST_WAKE
        struct wake_lock wl_intrwake; /* Host wakeup wakelock */
#endif /* BCMPCIE_OOB_HOST_WAKE */
#ifdef DHD_USE_SCAN_WAKELOCK
        struct wake_lock wl_scanwake;  /* Wifi scan wakelock */
#endif /* DHD_USE_SCAN_WAKELOCK */
#endif /* CONFIG_HAS_WAKELOCK && LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27) */

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        /* net_device interface lock, prevent race conditions among net_dev interface
         * calls and wifi_on or wifi_off
         */
        struct mutex dhd_net_if_mutex;
        struct mutex dhd_suspend_mutex;
#endif
        spinlock_t wakelock_spinlock;
        spinlock_t wakelock_evt_spinlock;
        uint32 wakelock_event_counter;
        uint32 wakelock_counter;
        int wakelock_wd_counter;
        int wakelock_rx_timeout_enable;
        int wakelock_ctrl_timeout_enable;
        bool waive_wakelock;
        uint32 wakelock_before_waive;

        /* Thread to issue ioctl for multicast */
        wait_queue_head_t ctrl_wait;
        atomic_t pend_8021x_cnt;
        dhd_attach_states_t dhd_state;
#ifdef SHOW_LOGTRACE
        dhd_event_log_t event_data;
#endif /* SHOW_LOGTRACE */

#if defined(CONFIG_HAS_EARLYSUSPEND) && defined(DHD_USE_EARLYSUSPEND)
        struct early_suspend early_suspend;
#endif /* CONFIG_HAS_EARLYSUSPEND && DHD_USE_EARLYSUSPEND */

#ifdef ARP_OFFLOAD_SUPPORT
        u32 pend_ipaddr;
#endif /* ARP_OFFLOAD_SUPPORT */
#ifdef BCM_FD_AGGR
        void *rpc_th;
        void *rpc_osh;
        struct timer_list rpcth_timer;
        bool rpcth_timer_active;
        uint8 fdaggr;
#endif
#ifdef DHDTCPACK_SUPPRESS
        spinlock_t      tcpack_lock;
#endif /* DHDTCPACK_SUPPRESS */
#ifdef FIX_CPU_MIN_CLOCK
        bool cpufreq_fix_status;
        struct mutex cpufreq_fix;
        struct pm_qos_request dhd_cpu_qos;
#ifdef FIX_BUS_MIN_CLOCK
        struct pm_qos_request dhd_bus_qos;
#endif /* FIX_BUS_MIN_CLOCK */
#endif /* FIX_CPU_MIN_CLOCK */
        void                    *dhd_deferred_wq;
#ifdef DEBUG_CPU_FREQ
        struct notifier_block freq_trans;
        int __percpu *new_freq;
#endif
        unsigned int unit;
        struct notifier_block pm_notifier;
#ifdef DHD_PSTA
        uint32  psta_mode;      /* PSTA or PSR */
#endif /* DHD_PSTA */
#ifdef DHD_DEBUG
        dhd_dump_t *dump;
        struct timer_list join_timer;
        u32 join_timeout_val;
        bool join_timer_active;
        uint scan_time_count;
        struct timer_list scan_timer;
        bool scan_timer_active;
#endif
#if defined(DHD_LB)
        /* CPU Load Balance dynamic CPU selection */

        /* Variable that tracks the currect CPUs available for candidacy */
        cpumask_var_t cpumask_curr_avail;

        /* Primary and secondary CPU mask */
        cpumask_var_t cpumask_primary, cpumask_secondary; /* configuration */
        cpumask_var_t cpumask_primary_new, cpumask_secondary_new; /* temp */

        struct notifier_block cpu_notifier;

        /* Tasklet to handle Tx Completion packet freeing */
        struct tasklet_struct tx_compl_tasklet;
        atomic_t        tx_compl_cpu;


        /* Tasklet to handle RxBuf Post during Rx completion */
        struct tasklet_struct rx_compl_tasklet;
        atomic_t        rx_compl_cpu;

        /* Napi struct for handling rx packet sendup. Packets are removed from
         * H2D RxCompl ring and placed into rx_pend_queue. rx_pend_queue is then
         * appended to rx_napi_queue (w/ lock) and the rx_napi_struct is scheduled
         * to run to rx_napi_cpu.
         */
        struct sk_buff_head   rx_pend_queue  ____cacheline_aligned;
        struct sk_buff_head   rx_napi_queue  ____cacheline_aligned;
        struct napi_struct    rx_napi_struct ____cacheline_aligned;
        atomic_t        rx_napi_cpu; /* cpu on which the napi is dispatched */
        struct net_device    *rx_napi_netdev; /* netdev of primary interface */

        struct work_struct    rx_napi_dispatcher_work;
        struct work_struct    tx_compl_dispatcher_work;
        struct work_struct    rx_compl_dispatcher_work;
        /* Number of times DPC Tasklet ran */
        uint32  dhd_dpc_cnt;

        /* Number of times NAPI processing got scheduled */
        uint32  napi_sched_cnt;

        /* Number of times NAPI processing ran on each available core */
        uint32  napi_percpu_run_cnt[NR_CPUS];

        /* Number of times RX Completions got scheduled */
        uint32  rxc_sched_cnt;
        /* Number of times RX Completion ran on each available core */
        uint32  rxc_percpu_run_cnt[NR_CPUS];

        /* Number of times TX Completions got scheduled */
        uint32  txc_sched_cnt;
        /* Number of times TX Completions ran on each available core */
        uint32  txc_percpu_run_cnt[NR_CPUS];

        /* CPU status */
        /* Number of times each CPU came online */
        uint32  cpu_online_cnt[NR_CPUS];

        /* Number of times each CPU went offline */
        uint32  cpu_offline_cnt[NR_CPUS];

        /*
         * Consumer Histogram - NAPI RX Packet processing
         * -----------------------------------------------
         * On Each CPU, when the NAPI RX Packet processing call back was invoked
         * how many packets were processed is captured in this data structure.
         * Now its difficult to capture the "exact" number of packets processed.
         * So considering the packet counter to be a 32 bit one, we have a
         * bucket with 8 bins (2^1, 2^2 ... 2^8). The "number" of packets
         * processed is rounded off to the next power of 2 and put in the
         * approriate "bin" the value in the bin gets incremented.
         * For example, assume that in CPU 1 if NAPI Rx runs 3 times
         * and the packet count processed is as follows (assume the bin counters are 0)
         * iteration 1 - 10 (the bin counter 2^4 increments to 1)
         * iteration 2 - 30 (the bin counter 2^5 increments to 1)
         * iteration 3 - 15 (the bin counter 2^4 increments by 1 to become 2)
         */
        uint32 napi_rx_hist[NR_CPUS][HIST_BIN_SIZE];
        uint32 txc_hist[NR_CPUS][HIST_BIN_SIZE];
        uint32 rxc_hist[NR_CPUS][HIST_BIN_SIZE];
#endif /* DHD_LB */

#if defined(BCM_DNGL_EMBEDIMAGE) || defined(BCM_REQUEST_FW)
#endif /* defined(BCM_DNGL_EMBEDIMAGE) || defined(BCM_REQUEST_FW) */

        struct kobject dhd_kobj;
#ifdef SUPPORT_SENSORHUB
        uint32 shub_enable;
#endif /* SUPPORT_SENSORHUB */

        struct delayed_work dhd_memdump_work;
} dhd_info_t;

#define DHDIF_FWDER(dhdif)      FALSE

/* Flag to indicate if we should download firmware on driver load */
uint dhd_download_fw_on_driverload = TRUE;

/* Flag to indicate if driver is initialized */
uint dhd_driver_init_done = FALSE;

/* Definitions to provide path to the firmware and nvram
 * example nvram_path[MOD_PARAM_PATHLEN]="/projects/wlan/nvram.txt"
 */
char firmware_path[MOD_PARAM_PATHLEN];
char nvram_path[MOD_PARAM_PATHLEN];
char config_path[MOD_PARAM_PATHLEN];

/* backup buffer for firmware and nvram path */
char fw_bak_path[MOD_PARAM_PATHLEN];
char nv_bak_path[MOD_PARAM_PATHLEN];

/* information string to keep firmware, chio, cheip version info visiable from log */
char info_string[MOD_PARAM_INFOLEN];
module_param_string(info_string, info_string, MOD_PARAM_INFOLEN, 0444);
int op_mode = 0;
int disable_proptx = 0;
module_param(op_mode, int, 0644);

#if defined(DHD_LB_RXP)
static int dhd_napi_weight = 32;
module_param(dhd_napi_weight, int, 0644);
#endif /* DHD_LB_RXP */

extern int wl_control_wl_start(struct net_device *dev);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) && defined(BCMLXSDMMC)
struct semaphore dhd_registration_sem;
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) */

/* deferred handlers */
static void dhd_ifadd_event_handler(void *handle, void *event_info, u8 event);
static void dhd_ifdel_event_handler(void *handle, void *event_info, u8 event);
static void dhd_set_mac_addr_handler(void *handle, void *event_info, u8 event);
static void dhd_set_mcast_list_handler(void *handle, void *event_info, u8 event);
#if defined(CONFIG_IPV6) && defined(IPV6_NDO_SUPPORT)
static void dhd_inet6_work_handler(void *dhd_info, void *event_data, u8 event);
#endif /* CONFIG_IPV6 && IPV6_NDO_SUPPORT */
#ifdef WL_CFG80211
extern void dhd_netdev_free(struct net_device *ndev);
#endif /* WL_CFG80211 */

/* Error bits */
module_param(dhd_msg_level, int, 0);
#if defined(WL_WIRELESS_EXT)
module_param(iw_msg_level, int, 0);
#endif
#ifdef WL_CFG80211
module_param(wl_dbg_level, int, 0);
#endif
module_param(android_msg_level, int, 0);
module_param(config_msg_level, int, 0);

#ifdef ARP_OFFLOAD_SUPPORT
/* ARP offload enable */
uint dhd_arp_enable = TRUE;
module_param(dhd_arp_enable, uint, 0);

/* ARP offload agent mode : Enable ARP Host Auto-Reply and ARP Peer Auto-Reply */

#ifdef ENABLE_ARP_SNOOP_MODE
uint dhd_arp_mode = ARP_OL_AGENT | ARP_OL_PEER_AUTO_REPLY | ARP_OL_SNOOP;
#else
uint dhd_arp_mode = ARP_OL_AGENT | ARP_OL_PEER_AUTO_REPLY;
#endif  /* ENABLE_ARP_SNOOP_MODE */

module_param(dhd_arp_mode, uint, 0);
#endif /* ARP_OFFLOAD_SUPPORT */

/* Disable Prop tx */
module_param(disable_proptx, int, 0644);
/* load firmware and/or nvram values from the filesystem */
module_param_string(firmware_path, firmware_path, MOD_PARAM_PATHLEN, 0660);
module_param_string(nvram_path, nvram_path, MOD_PARAM_PATHLEN, 0660);
module_param_string(config_path, config_path, MOD_PARAM_PATHLEN, 0);

/* Watchdog interval */

/* extend watchdog expiration to 2 seconds when DPC is running */
#define WATCHDOG_EXTEND_INTERVAL (2000)

uint dhd_watchdog_ms = CUSTOM_DHD_WATCHDOG_MS;
module_param(dhd_watchdog_ms, uint, 0);

#ifdef DHD_PCIE_RUNTIMEPM
uint dhd_runtimepm_ms = CUSTOM_DHD_RUNTIME_MS;
#endif /* DHD_PCIE_RUNTIMEPMT */
#if defined(DHD_DEBUG)
/* Console poll interval */
uint dhd_console_ms = 0;
module_param(dhd_console_ms, uint, 0644);
#endif /* defined(DHD_DEBUG) */


uint dhd_slpauto = TRUE;
module_param(dhd_slpauto, uint, 0);

#ifdef PKT_FILTER_SUPPORT
/* Global Pkt filter enable control */
uint dhd_pkt_filter_enable = TRUE;
module_param(dhd_pkt_filter_enable, uint, 0);
#endif

/* Pkt filter init setup */
uint dhd_pkt_filter_init = 0;
module_param(dhd_pkt_filter_init, uint, 0);

/* Pkt filter mode control */
#ifdef GAN_LITE_NAT_KEEPALIVE_FILTER
uint dhd_master_mode = FALSE;
#else
uint dhd_master_mode = FALSE;
#endif /* GAN_LITE_NAT_KEEPALIVE_FILTER */
module_param(dhd_master_mode, uint, 0);

int dhd_watchdog_prio = 0;
module_param(dhd_watchdog_prio, int, 0);

/* DPC thread priority */
int dhd_dpc_prio = CUSTOM_DPC_PRIO_SETTING;
module_param(dhd_dpc_prio, int, 0);

/* RX frame thread priority */
int dhd_rxf_prio = CUSTOM_RXF_PRIO_SETTING;
module_param(dhd_rxf_prio, int, 0);

int passive_channel_skip = 0;
module_param(passive_channel_skip, int, (S_IRUSR|S_IWUSR));

#if !defined(BCMDHDUSB)
extern int dhd_dongle_ramsize;
module_param(dhd_dongle_ramsize, int, 0);
#endif /* BCMDHDUSB */

/* Keep track of number of instances */
static int dhd_found = 0;
static int instance_base = 0; /* Starting instance number */
module_param(instance_base, int, 0644);

/* Functions to manage sysfs interface for dhd */
static int dhd_sysfs_init(dhd_info_t *dhd);
static void dhd_sysfs_exit(dhd_info_t *dhd);

#if defined(DHD_LB)

static void
dhd_lb_set_default_cpus(dhd_info_t *dhd)
{
        /* Default CPU allocation for the jobs */
        atomic_set(&dhd->rx_napi_cpu, 1);
        atomic_set(&dhd->rx_compl_cpu, 2);
        atomic_set(&dhd->tx_compl_cpu, 2);
}

static void
dhd_cpumasks_deinit(dhd_info_t *dhd)
{
        free_cpumask_var(dhd->cpumask_curr_avail);
        free_cpumask_var(dhd->cpumask_primary);
        free_cpumask_var(dhd->cpumask_primary_new);
        free_cpumask_var(dhd->cpumask_secondary);
        free_cpumask_var(dhd->cpumask_secondary_new);
}

static int
dhd_cpumasks_init(dhd_info_t *dhd)
{
        int id;
        uint32 cpus;
        int ret = 0;

        if (!alloc_cpumask_var(&dhd->cpumask_curr_avail, GFP_KERNEL) ||
                !alloc_cpumask_var(&dhd->cpumask_primary, GFP_KERNEL) ||
                !alloc_cpumask_var(&dhd->cpumask_primary_new, GFP_KERNEL) ||
                !alloc_cpumask_var(&dhd->cpumask_secondary, GFP_KERNEL) ||
                !alloc_cpumask_var(&dhd->cpumask_secondary_new, GFP_KERNEL)) {
                DHD_ERROR(("%s Failed to init cpumasks\n", __FUNCTION__));
                ret = -ENOMEM;
                goto fail;
        }

        cpumask_copy(dhd->cpumask_curr_avail, cpu_online_mask);
        cpumask_clear(dhd->cpumask_primary);
        cpumask_clear(dhd->cpumask_secondary);

        cpus = DHD_LB_PRIMARY_CPUS;
        for (id = 0; id < NR_CPUS; id++) {
                if (isset(&cpus, id))
                        cpumask_set_cpu(id, dhd->cpumask_primary);
        }

        cpus = DHD_LB_SECONDARY_CPUS;
        for (id = 0; id < NR_CPUS; id++) {
                if (isset(&cpus, id))
                        cpumask_set_cpu(id, dhd->cpumask_secondary);
        }

        return ret;
fail:
        dhd_cpumasks_deinit(dhd);
        return ret;
}

/*
 * The CPU Candidacy Algorithm
 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~
 * The available CPUs for selection are divided into two groups
 *  Primary Set - A CPU mask that carries the First Choice CPUs
 *  Secondary Set - A CPU mask that carries the Second Choice CPUs.
 *
 * There are two types of Job, that needs to be assigned to
 * the CPUs, from one of the above mentioned CPU group. The Jobs are
 * 1) Rx Packet Processing - napi_cpu
 * 2) Completion Processiong (Tx, RX) - compl_cpu
 *
 * To begin with both napi_cpu and compl_cpu are on CPU0. Whenever a CPU goes
 * on-line/off-line the CPU candidacy algorithm is triggerd. The candidacy
 * algo tries to pickup the first available non boot CPU (CPU0) for napi_cpu.
 * If there are more processors free, it assigns one to compl_cpu.
 * It also tries to ensure that both napi_cpu and compl_cpu are not on the same
 * CPU, as much as possible.
 *
 * By design, both Tx and Rx completion jobs are run on the same CPU core, as it
 * would allow Tx completion skb's to be released into a local free pool from
 * which the rx buffer posts could have been serviced. it is important to note
 * that a Tx packet may not have a large enough buffer for rx posting.
 */
void dhd_select_cpu_candidacy(dhd_info_t *dhd)
{
        uint32 primary_available_cpus; /* count of primary available cpus */
        uint32 secondary_available_cpus; /* count of secondary available cpus */
        uint32 napi_cpu = 0; /* cpu selected for napi rx processing */
        uint32 compl_cpu = 0; /* cpu selected for completion jobs */

        cpumask_clear(dhd->cpumask_primary_new);
        cpumask_clear(dhd->cpumask_secondary_new);

        /*
         * Now select from the primary mask. Even if a Job is
         * already running on a CPU in secondary group, we still move
         * to primary CPU. So no conditional checks.
         */
        cpumask_and(dhd->cpumask_primary_new, dhd->cpumask_primary,
                dhd->cpumask_curr_avail);

        cpumask_and(dhd->cpumask_secondary_new, dhd->cpumask_secondary,
                dhd->cpumask_curr_avail);

        primary_available_cpus = cpumask_weight(dhd->cpumask_primary_new);

        if (primary_available_cpus > 0) {
                napi_cpu = cpumask_first(dhd->cpumask_primary_new);

                /* If no further CPU is available,
                 * cpumask_next returns >= nr_cpu_ids
                 */
                compl_cpu = cpumask_next(napi_cpu, dhd->cpumask_primary_new);
                if (compl_cpu >= nr_cpu_ids)
                        compl_cpu = 0;
        }

        DHD_INFO(("%s After primary CPU check napi_cpu %d compl_cpu %d\n",
                __FUNCTION__, napi_cpu, compl_cpu));

        /* -- Now check for the CPUs from the secondary mask -- */
        secondary_available_cpus = cpumask_weight(dhd->cpumask_secondary_new);

        DHD_INFO(("%s Available secondary cpus %d nr_cpu_ids %d\n",
                __FUNCTION__, secondary_available_cpus, nr_cpu_ids));

        if (secondary_available_cpus > 0) {
                /* At this point if napi_cpu is unassigned it means no CPU
                 * is online from Primary Group
                 */
                if (napi_cpu == 0) {
                        napi_cpu = cpumask_first(dhd->cpumask_secondary_new);
                        compl_cpu = cpumask_next(napi_cpu, dhd->cpumask_secondary_new);
                } else if (compl_cpu == 0) {
                        compl_cpu = cpumask_first(dhd->cpumask_secondary_new);
                }

                /* If no CPU was available for completion, choose CPU 0 */
                if (compl_cpu >= nr_cpu_ids)
                        compl_cpu = 0;
        }
        if ((primary_available_cpus == 0) &&
                (secondary_available_cpus == 0)) {
                /* No CPUs available from primary or secondary mask */
                napi_cpu = 0;
                compl_cpu = 0;
        }

        DHD_INFO(("%s After secondary CPU check napi_cpu %d compl_cpu %d\n",
                __FUNCTION__, napi_cpu, compl_cpu));
        ASSERT(napi_cpu < nr_cpu_ids);
        ASSERT(compl_cpu < nr_cpu_ids);

        atomic_set(&dhd->rx_napi_cpu, napi_cpu);
        atomic_set(&dhd->tx_compl_cpu, compl_cpu);
        atomic_set(&dhd->rx_compl_cpu, compl_cpu);
        return;
}

/*
 * Function to handle CPU Hotplug notifications.
 * One of the task it does is to trigger the CPU Candidacy algorithm
 * for load balancing.
 */
int
dhd_cpu_callback(struct notifier_block *nfb, unsigned long action, void *hcpu)
{
        unsigned int cpu = (unsigned int)(long)hcpu;

        dhd_info_t *dhd = container_of(nfb, dhd_info_t, cpu_notifier);

        switch (action)
        {
                case CPU_ONLINE:
                        DHD_LB_STATS_INCR(dhd->cpu_online_cnt[cpu]);
                        cpumask_set_cpu(cpu, dhd->cpumask_curr_avail);
                        dhd_select_cpu_candidacy(dhd);
                        break;

                case CPU_DOWN_PREPARE:
                case CPU_DOWN_PREPARE_FROZEN:
                        DHD_LB_STATS_INCR(dhd->cpu_offline_cnt[cpu]);
                        cpumask_clear_cpu(cpu, dhd->cpumask_curr_avail);
                        dhd_select_cpu_candidacy(dhd);
                        break;
                default:
                        break;
        }

        return NOTIFY_OK;
}

#if defined(DHD_LB_STATS)
void dhd_lb_stats_init(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd;
        int i, j;

        if (dhdp == NULL) {
                DHD_ERROR(("%s(): Invalid argument dhdp is NULL \n",
                        __FUNCTION__));
                return;
        }

        dhd = dhdp->info;
        if (dhd == NULL) {
                DHD_ERROR(("%s(): DHD pointer is NULL \n", __FUNCTION__));
                return;
        }

        DHD_LB_STATS_CLR(dhd->dhd_dpc_cnt);
        DHD_LB_STATS_CLR(dhd->napi_sched_cnt);
        DHD_LB_STATS_CLR(dhd->rxc_sched_cnt);
        DHD_LB_STATS_CLR(dhd->txc_sched_cnt);

        for (i = 0; i < NR_CPUS; i++) {
                DHD_LB_STATS_CLR(dhd->napi_percpu_run_cnt[i]);
                DHD_LB_STATS_CLR(dhd->rxc_percpu_run_cnt[i]);
                DHD_LB_STATS_CLR(dhd->txc_percpu_run_cnt[i]);

                DHD_LB_STATS_CLR(dhd->cpu_online_cnt[i]);
                DHD_LB_STATS_CLR(dhd->cpu_offline_cnt[i]);
        }

        for (i = 0; i < NR_CPUS; i++) {
                for (j = 0; j < HIST_BIN_SIZE; j++) {
                        DHD_LB_STATS_CLR(dhd->napi_rx_hist[i][j]);
                        DHD_LB_STATS_CLR(dhd->txc_hist[i][j]);
                        DHD_LB_STATS_CLR(dhd->rxc_hist[i][j]);
                }
        }

        return;
}

static void dhd_lb_stats_dump_histo(
        struct bcmstrbuf *strbuf, uint32 (*hist)[HIST_BIN_SIZE])
{
        int i, j;
        uint32 per_cpu_total[NR_CPUS] = {0};
        uint32 total = 0;

        bcm_bprintf(strbuf, "CPU: \t\t");
        for (i = 0; i < num_possible_cpus(); i++)
                bcm_bprintf(strbuf, "%d\t", i);
        bcm_bprintf(strbuf, "\nBin\n");

        for (i = 0; i < HIST_BIN_SIZE; i++) {
                bcm_bprintf(strbuf, "%d:\t\t", 1<<(i+1));
                for (j = 0; j < num_possible_cpus(); j++) {
                        bcm_bprintf(strbuf, "%d\t", hist[j][i]);
                }
                bcm_bprintf(strbuf, "\n");
        }
        bcm_bprintf(strbuf, "Per CPU Total \t");
        total = 0;
        for (i = 0; i < num_possible_cpus(); i++) {
                for (j = 0; j < HIST_BIN_SIZE; j++) {
                        per_cpu_total[i] += (hist[i][j] * (1<<(j+1)));
                }
                bcm_bprintf(strbuf, "%d\t", per_cpu_total[i]);
                total += per_cpu_total[i];
        }
        bcm_bprintf(strbuf, "\nTotal\t\t%d \n", total);

        return;
}

static inline void dhd_lb_stats_dump_cpu_array(struct bcmstrbuf *strbuf, uint32 *p)
{
        int i;

        bcm_bprintf(strbuf, "CPU: \t");
        for (i = 0; i < num_possible_cpus(); i++)
                bcm_bprintf(strbuf, "%d\t", i);
        bcm_bprintf(strbuf, "\n");

        bcm_bprintf(strbuf, "Val: \t");
        for (i = 0; i < num_possible_cpus(); i++)
                bcm_bprintf(strbuf, "%u\t", *(p+i));
        bcm_bprintf(strbuf, "\n");
        return;
}

void dhd_lb_stats_dump(dhd_pub_t *dhdp, struct bcmstrbuf *strbuf)
{
        dhd_info_t *dhd;

        if (dhdp == NULL || strbuf == NULL) {
                DHD_ERROR(("%s(): Invalid argument dhdp %p strbuf %p \n",
                        __FUNCTION__, dhdp, strbuf));
                return;
        }

        dhd = dhdp->info;
        if (dhd == NULL) {
                DHD_ERROR(("%s(): DHD pointer is NULL \n", __FUNCTION__));
                return;
        }

        bcm_bprintf(strbuf, "\ncpu_online_cnt:\n");
        dhd_lb_stats_dump_cpu_array(strbuf, dhd->cpu_online_cnt);

        bcm_bprintf(strbuf, "cpu_offline_cnt:\n");
        dhd_lb_stats_dump_cpu_array(strbuf, dhd->cpu_offline_cnt);

        bcm_bprintf(strbuf, "\nsched_cnt: dhd_dpc %u napi %u rxc %u txc %u\n",
                dhd->dhd_dpc_cnt, dhd->napi_sched_cnt, dhd->rxc_sched_cnt,
                dhd->txc_sched_cnt);
#ifdef DHD_LB_RXP
        bcm_bprintf(strbuf, "napi_percpu_run_cnt:\n");
        dhd_lb_stats_dump_cpu_array(strbuf, dhd->napi_percpu_run_cnt);
        bcm_bprintf(strbuf, "\nNAPI Packets Received Histogram:\n");
        dhd_lb_stats_dump_histo(strbuf, dhd->napi_rx_hist);
#endif /* DHD_LB_RXP */

#ifdef DHD_LB_RXC
        bcm_bprintf(strbuf, "rxc_percpu_run_cnt:\n");
        dhd_lb_stats_dump_cpu_array(strbuf, dhd->rxc_percpu_run_cnt);
        bcm_bprintf(strbuf, "\nRX Completions (Buffer Post) Histogram:\n");
        dhd_lb_stats_dump_histo(strbuf, dhd->rxc_hist);
#endif /* DHD_LB_RXC */


#ifdef DHD_LB_TXC
        bcm_bprintf(strbuf, "txc_percpu_run_cnt:\n");
        dhd_lb_stats_dump_cpu_array(strbuf, dhd->txc_percpu_run_cnt);
        bcm_bprintf(strbuf, "\nTX Completions (Buffer Free) Histogram:\n");
        dhd_lb_stats_dump_histo(strbuf, dhd->txc_hist);
#endif /* DHD_LB_TXC */
}

static void dhd_lb_stats_update_histo(uint32 *bin, uint32 count)
{
        uint32 bin_power;
        uint32 *p = NULL;

        bin_power = next_larger_power2(count);

        switch (bin_power) {
                case   0: break;
                case   1: /* Fall through intentionally */
                case   2: p = bin + 0; break;
                case   4: p = bin + 1; break;
                case   8: p = bin + 2; break;
                case  16: p = bin + 3; break;
                case  32: p = bin + 4; break;
                case  64: p = bin + 5; break;
                case 128: p = bin + 6; break;
                default : p = bin + 7; break;
        }
        if (p)
                *p = *p + 1;
        return;
}

extern void dhd_lb_stats_update_napi_histo(dhd_pub_t *dhdp, uint32 count)
{
        int cpu;
        dhd_info_t *dhd = dhdp->info;

        cpu = get_cpu();
        put_cpu();
        dhd_lb_stats_update_histo(&dhd->napi_rx_hist[cpu][0], count);

        return;
}

extern void dhd_lb_stats_update_txc_histo(dhd_pub_t *dhdp, uint32 count)
{
        int cpu;
        dhd_info_t *dhd = dhdp->info;

        cpu = get_cpu();
        put_cpu();
        dhd_lb_stats_update_histo(&dhd->txc_hist[cpu][0], count);

        return;
}

extern void dhd_lb_stats_update_rxc_histo(dhd_pub_t *dhdp, uint32 count)
{
        int cpu;
        dhd_info_t *dhd = dhdp->info;

        cpu = get_cpu();
        put_cpu();
        dhd_lb_stats_update_histo(&dhd->rxc_hist[cpu][0], count);

        return;
}

extern void dhd_lb_stats_txc_percpu_cnt_incr(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = dhdp->info;
        DHD_LB_STATS_PERCPU_ARR_INCR(dhd->txc_percpu_run_cnt);
}

extern void dhd_lb_stats_rxc_percpu_cnt_incr(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = dhdp->info;
        DHD_LB_STATS_PERCPU_ARR_INCR(dhd->rxc_percpu_run_cnt);
}

#endif /* DHD_LB_STATS */
#endif /* DHD_LB */


#if defined(DISABLE_FRAMEBURST_VSDB) && defined(USE_WFA_CERT_CONF)
int g_frameburst = 1;
#endif /* DISABLE_FRAMEBURST_VSDB && USE_WFA_CERT_CONF */

static int dhd_get_pend_8021x_cnt(dhd_info_t *dhd);

/* DHD Perimiter lock only used in router with bypass forwarding. */
#define DHD_PERIM_RADIO_INIT()              do { /* noop */ } while (0)
#define DHD_PERIM_LOCK_TRY(unit, flag)      do { /* noop */ } while (0)
#define DHD_PERIM_UNLOCK_TRY(unit, flag)    do { /* noop */ } while (0)

#ifdef PCIE_FULL_DONGLE
#if defined(BCM_GMAC3)
#define DHD_IF_STA_LIST_LOCK_INIT(ifp)      do { /* noop */ } while (0)
#define DHD_IF_STA_LIST_LOCK(ifp, flags)    ({ BCM_REFERENCE(flags); })
#define DHD_IF_STA_LIST_UNLOCK(ifp, flags)  ({ BCM_REFERENCE(flags); })

#if defined(DHD_IGMP_UCQUERY) || defined(DHD_UCAST_UPNP)
#define DHD_IF_WMF_UCFORWARD_LOCK(dhd, ifp, slist) ({ BCM_REFERENCE(slist); &(ifp)->sta_list; })
#define DHD_IF_WMF_UCFORWARD_UNLOCK(dhd, slist) ({ BCM_REFERENCE(slist); })
#endif /* DHD_IGMP_UCQUERY || DHD_UCAST_UPNP */

#else /* ! BCM_GMAC3 */
#define DHD_IF_STA_LIST_LOCK_INIT(ifp) spin_lock_init(&(ifp)->sta_list_lock)
#define DHD_IF_STA_LIST_LOCK(ifp, flags) \
        spin_lock_irqsave(&(ifp)->sta_list_lock, (flags))
#define DHD_IF_STA_LIST_UNLOCK(ifp, flags) \
        spin_unlock_irqrestore(&(ifp)->sta_list_lock, (flags))

#if defined(DHD_IGMP_UCQUERY) || defined(DHD_UCAST_UPNP)
static struct list_head * dhd_sta_list_snapshot(dhd_info_t *dhd, dhd_if_t *ifp,
        struct list_head *snapshot_list);
static void dhd_sta_list_snapshot_free(dhd_info_t *dhd, struct list_head *snapshot_list);
#define DHD_IF_WMF_UCFORWARD_LOCK(dhd, ifp, slist) ({ dhd_sta_list_snapshot(dhd, ifp, slist); })
#define DHD_IF_WMF_UCFORWARD_UNLOCK(dhd, slist) ({ dhd_sta_list_snapshot_free(dhd, slist); })
#endif /* DHD_IGMP_UCQUERY || DHD_UCAST_UPNP */

#endif /* ! BCM_GMAC3 */
#endif /* PCIE_FULL_DONGLE */

/* Control fw roaming */
uint dhd_roam_disable = 0;

#ifdef BCMDBGFS
extern int dhd_dbg_init(dhd_pub_t *dhdp);
extern void dhd_dbg_remove(void);
#endif

/* Control radio state */
uint dhd_radio_up = 1;

/* Network inteface name */
char iface_name[IFNAMSIZ] = {'\0'};
module_param_string(iface_name, iface_name, IFNAMSIZ, 0);

/* The following are specific to the SDIO dongle */

/* IOCTL response timeout */
int dhd_ioctl_timeout_msec = IOCTL_RESP_TIMEOUT;

/* Idle timeout for backplane clock */
int dhd_idletime = DHD_IDLETIME_TICKS;
module_param(dhd_idletime, int, 0);

/* Use polling */
uint dhd_poll = FALSE;
module_param(dhd_poll, uint, 0);

/* Use interrupts */
uint dhd_intr = TRUE;
module_param(dhd_intr, uint, 0);

/* SDIO Drive Strength (in milliamps) */
uint dhd_sdiod_drive_strength = 6;
module_param(dhd_sdiod_drive_strength, uint, 0);

#ifdef BCMSDIO
/* Tx/Rx bounds */
extern uint dhd_txbound;
extern uint dhd_rxbound;
module_param(dhd_txbound, uint, 0);
module_param(dhd_rxbound, uint, 0);

/* Deferred transmits */
extern uint dhd_deferred_tx;
module_param(dhd_deferred_tx, uint, 0);

#endif /* BCMSDIO */


#ifdef SDTEST
/* Echo packet generator (pkts/s) */
uint dhd_pktgen = 0;
module_param(dhd_pktgen, uint, 0);

/* Echo packet len (0 => sawtooth, max 2040) */
uint dhd_pktgen_len = 0;
module_param(dhd_pktgen_len, uint, 0);
#endif /* SDTEST */



/* Allow delayed firmware download for debug purpose */
int allow_delay_fwdl = FALSE;
module_param(allow_delay_fwdl, int, 0);

extern char dhd_version[];
extern char fw_version[];

int dhd_net_bus_devreset(struct net_device *dev, uint8 flag);
static void dhd_net_if_lock_local(dhd_info_t *dhd);
static void dhd_net_if_unlock_local(dhd_info_t *dhd);
static void dhd_suspend_lock(dhd_pub_t *dhdp);
static void dhd_suspend_unlock(dhd_pub_t *dhdp);

#ifdef WLMEDIA_HTSF
void htsf_update(dhd_info_t *dhd, void *data);
tsf_t prev_tsf, cur_tsf;

uint32 dhd_get_htsf(dhd_info_t *dhd, int ifidx);
static int dhd_ioctl_htsf_get(dhd_info_t *dhd, int ifidx);
static void dhd_dump_latency(void);
static void dhd_htsf_addtxts(dhd_pub_t *dhdp, void *pktbuf);
static void dhd_htsf_addrxts(dhd_pub_t *dhdp, void *pktbuf);
static void dhd_dump_htsfhisto(histo_t *his, char *s);
#endif /* WLMEDIA_HTSF */

/* Monitor interface */
int dhd_monitor_init(void *dhd_pub);
int dhd_monitor_uninit(void);


#if defined(WL_WIRELESS_EXT)
struct iw_statistics *dhd_get_wireless_stats(struct net_device *dev);
#endif /* defined(WL_WIRELESS_EXT) */

static void dhd_dpc(ulong data);
/* forward decl */
extern int dhd_wait_pend8021x(struct net_device *dev);
void dhd_os_wd_timer_extend(void *bus, bool extend);

#ifdef TOE
#ifndef BDC
#error TOE requires BDC
#endif /* !BDC */
static int dhd_toe_get(dhd_info_t *dhd, int idx, uint32 *toe_ol);
static int dhd_toe_set(dhd_info_t *dhd, int idx, uint32 toe_ol);
#endif /* TOE */

static int dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
                             wl_event_msg_t *event_ptr, void **data_ptr);

#if defined(CONFIG_PM_SLEEP)
static int dhd_pm_callback(struct notifier_block *nfb, unsigned long action, void *ignored)
{
        int ret = NOTIFY_DONE;
        bool suspend = FALSE;
        dhd_info_t *dhdinfo = (dhd_info_t*)container_of(nfb, struct dhd_info, pm_notifier);

        BCM_REFERENCE(dhdinfo);

        switch (action) {
        case PM_HIBERNATION_PREPARE:
        case PM_SUSPEND_PREPARE:
                suspend = TRUE;
                break;

        case PM_POST_HIBERNATION:
        case PM_POST_SUSPEND:
                suspend = FALSE;
                break;
        }

#if defined(SUPPORT_P2P_GO_PS)
#ifdef PROP_TXSTATUS
        if (suspend) {
                DHD_OS_WAKE_LOCK_WAIVE(&dhdinfo->pub);
                dhd_wlfc_suspend(&dhdinfo->pub);
                DHD_OS_WAKE_LOCK_RESTORE(&dhdinfo->pub);
        } else
                dhd_wlfc_resume(&dhdinfo->pub);
#endif /* PROP_TXSTATUS */
#endif /* defined(SUPPORT_P2P_GO_PS) */

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) && (LINUX_VERSION_CODE <= \
        KERNEL_VERSION(2, 6, 39))
        dhd_mmc_suspend = suspend;
        smp_mb();
#endif

        return ret;
}

/* to make sure we won't register the same notifier twice, otherwise a loop is likely to be
 * created in kernel notifier link list (with 'next' pointing to itself)
 */
static bool dhd_pm_notifier_registered = FALSE;

extern int register_pm_notifier(struct notifier_block *nb);
extern int unregister_pm_notifier(struct notifier_block *nb);
#endif /* CONFIG_PM_SLEEP */

/* Request scheduling of the bus rx frame */
static void dhd_sched_rxf(dhd_pub_t *dhdp, void *skb);
static void dhd_os_rxflock(dhd_pub_t *pub);
static void dhd_os_rxfunlock(dhd_pub_t *pub);

/** priv_link is the link between netdev and the dhdif and dhd_info structs. */
typedef struct dhd_dev_priv {
        dhd_info_t * dhd; /* cached pointer to dhd_info in netdevice priv */
        dhd_if_t   * ifp; /* cached pointer to dhd_if in netdevice priv */
        int          ifidx; /* interface index */
} dhd_dev_priv_t;

#define DHD_DEV_PRIV_SIZE       (sizeof(dhd_dev_priv_t))
#define DHD_DEV_PRIV(dev)       ((dhd_dev_priv_t *)DEV_PRIV(dev))
#define DHD_DEV_INFO(dev)       (((dhd_dev_priv_t *)DEV_PRIV(dev))->dhd)
#define DHD_DEV_IFP(dev)        (((dhd_dev_priv_t *)DEV_PRIV(dev))->ifp)
#define DHD_DEV_IFIDX(dev)      (((dhd_dev_priv_t *)DEV_PRIV(dev))->ifidx)

/** Clear the dhd net_device's private structure. */
static inline void
dhd_dev_priv_clear(struct net_device * dev)
{
        dhd_dev_priv_t * dev_priv;
        ASSERT(dev != (struct net_device *)NULL);
        dev_priv = DHD_DEV_PRIV(dev);
        dev_priv->dhd = (dhd_info_t *)NULL;
        dev_priv->ifp = (dhd_if_t *)NULL;
        dev_priv->ifidx = DHD_BAD_IF;
}

/** Setup the dhd net_device's private structure. */
static inline void
dhd_dev_priv_save(struct net_device * dev, dhd_info_t * dhd, dhd_if_t * ifp,
                  int ifidx)
{
        dhd_dev_priv_t * dev_priv;
        ASSERT(dev != (struct net_device *)NULL);
        dev_priv = DHD_DEV_PRIV(dev);
        dev_priv->dhd = dhd;
        dev_priv->ifp = ifp;
        dev_priv->ifidx = ifidx;
}

#ifdef PCIE_FULL_DONGLE

/** Dummy objects are defined with state representing bad|down.
 * Performance gains from reducing branch conditionals, instruction parallelism,
 * dual issue, reducing load shadows, avail of larger pipelines.
 * Use DHD_XXX_NULL instead of (dhd_xxx_t *)NULL, whenever an object pointer
 * is accessed via the dhd_sta_t.
 */

/* Dummy dhd_info object */
dhd_info_t dhd_info_null = {
#if defined(BCM_GMAC3)
        .fwdh = FWDER_NULL,
#endif
        .pub = {
                 .info = &dhd_info_null,
#ifdef DHDTCPACK_SUPPRESS
                 .tcpack_sup_mode = TCPACK_SUP_REPLACE,
#endif /* DHDTCPACK_SUPPRESS */
                 .up = FALSE,
                 .busstate = DHD_BUS_DOWN
        }
};
#define DHD_INFO_NULL (&dhd_info_null)
#define DHD_PUB_NULL  (&dhd_info_null.pub)

/* Dummy netdevice object */
struct net_device dhd_net_dev_null = {
        .reg_state = NETREG_UNREGISTERED
};
#define DHD_NET_DEV_NULL (&dhd_net_dev_null)

/* Dummy dhd_if object */
dhd_if_t dhd_if_null = {
#if defined(BCM_GMAC3)
        .fwdh = FWDER_NULL,
#endif
#ifdef WMF
        .wmf = { .wmf_enable = TRUE },
#endif
        .info = DHD_INFO_NULL,
        .net = DHD_NET_DEV_NULL,
        .idx = DHD_BAD_IF
};
#define DHD_IF_NULL  (&dhd_if_null)

#define DHD_STA_NULL ((dhd_sta_t *)NULL)

/** Interface STA list management. */

/** Fetch the dhd_if object, given the interface index in the dhd. */
static inline dhd_if_t *dhd_get_ifp(dhd_pub_t *dhdp, uint32 ifidx);

/** Alloc/Free a dhd_sta object from the dhd instances' sta_pool. */
static void dhd_sta_free(dhd_pub_t *pub, dhd_sta_t *sta);
static dhd_sta_t * dhd_sta_alloc(dhd_pub_t * dhdp);

/* Delete a dhd_sta or flush all dhd_sta in an interface's sta_list. */
static void dhd_if_del_sta_list(dhd_if_t * ifp);
static void     dhd_if_flush_sta(dhd_if_t * ifp);

/* Construct/Destruct a sta pool. */
static int dhd_sta_pool_init(dhd_pub_t *dhdp, int max_sta);
static void dhd_sta_pool_fini(dhd_pub_t *dhdp, int max_sta);
/* Clear the pool of dhd_sta_t objects for built-in type driver */
static void dhd_sta_pool_clear(dhd_pub_t *dhdp, int max_sta);


/* Return interface pointer */
static inline dhd_if_t *dhd_get_ifp(dhd_pub_t *dhdp, uint32 ifidx)
{
        ASSERT(ifidx < DHD_MAX_IFS);

        if (ifidx >= DHD_MAX_IFS)
                return NULL;

        return dhdp->info->iflist[ifidx];
}

/** Reset a dhd_sta object and free into the dhd pool. */
static void
dhd_sta_free(dhd_pub_t * dhdp, dhd_sta_t * sta)
{
        int prio;

        ASSERT((sta != DHD_STA_NULL) && (sta->idx != ID16_INVALID));

        ASSERT((dhdp->staid_allocator != NULL) && (dhdp->sta_pool != NULL));

        /*
         * Flush and free all packets in all flowring's queues belonging to sta.
         * Packets in flow ring will be flushed later.
         */
        for (prio = 0; prio < (int)NUMPRIO; prio++) {
                uint16 flowid = sta->flowid[prio];

                if (flowid != FLOWID_INVALID) {
                        unsigned long flags;
                        flow_queue_t * queue = dhd_flow_queue(dhdp, flowid);
                        flow_ring_node_t * flow_ring_node;

#ifdef DHDTCPACK_SUPPRESS
                        /* Clean tcp_ack_info_tbl in order to prevent access to flushed pkt,
                         * when there is a newly coming packet from network stack.
                         */
                        dhd_tcpack_info_tbl_clean(dhdp);
#endif /* DHDTCPACK_SUPPRESS */

                        flow_ring_node = dhd_flow_ring_node(dhdp, flowid);
                        DHD_FLOWRING_LOCK(flow_ring_node->lock, flags);
                        flow_ring_node->status = FLOW_RING_STATUS_STA_FREEING;

                        if (!DHD_FLOW_QUEUE_EMPTY(queue)) {
                                void * pkt;
                                while ((pkt = dhd_flow_queue_dequeue(dhdp, queue)) != NULL) {
                                        PKTFREE(dhdp->osh, pkt, TRUE);
                                }
                        }

                        DHD_FLOWRING_UNLOCK(flow_ring_node->lock, flags);
                        ASSERT(DHD_FLOW_QUEUE_EMPTY(queue));
                }

                sta->flowid[prio] = FLOWID_INVALID;
        }

        id16_map_free(dhdp->staid_allocator, sta->idx);
        DHD_CUMM_CTR_INIT(&sta->cumm_ctr);
        sta->ifp = DHD_IF_NULL; /* dummy dhd_if object */
        sta->ifidx = DHD_BAD_IF;
        bzero(sta->ea.octet, ETHER_ADDR_LEN);
        INIT_LIST_HEAD(&sta->list);
        sta->idx = ID16_INVALID; /* implying free */
}

/** Allocate a dhd_sta object from the dhd pool. */
static dhd_sta_t *
dhd_sta_alloc(dhd_pub_t * dhdp)
{
        uint16 idx;
        dhd_sta_t * sta;
        dhd_sta_pool_t * sta_pool;

        ASSERT((dhdp->staid_allocator != NULL) && (dhdp->sta_pool != NULL));

        idx = id16_map_alloc(dhdp->staid_allocator);
        if (idx == ID16_INVALID) {
                DHD_ERROR(("%s: cannot get free staid\n", __FUNCTION__));
                return DHD_STA_NULL;
        }

        sta_pool = (dhd_sta_pool_t *)(dhdp->sta_pool);
        sta = &sta_pool[idx];

        ASSERT((sta->idx == ID16_INVALID) &&
               (sta->ifp == DHD_IF_NULL) && (sta->ifidx == DHD_BAD_IF));

        DHD_CUMM_CTR_INIT(&sta->cumm_ctr);

        sta->idx = idx; /* implying allocated */

        return sta;
}

/** Delete all STAs in an interface's STA list. */
static void
dhd_if_del_sta_list(dhd_if_t *ifp)
{
        dhd_sta_t *sta, *next;
        unsigned long flags;

        DHD_IF_STA_LIST_LOCK(ifp, flags);

        list_for_each_entry_safe(sta, next, &ifp->sta_list, list) {
#if defined(BCM_GMAC3)
                if (ifp->fwdh) {
                        /* Remove sta from WOFA forwarder. */
                        fwder_deassoc(ifp->fwdh, (uint16 *)(sta->ea.octet), (wofa_t)sta);
                }
#endif /* BCM_GMAC3 */
                list_del(&sta->list);
                dhd_sta_free(&ifp->info->pub, sta);
        }

        DHD_IF_STA_LIST_UNLOCK(ifp, flags);

        return;
}

/** Router/GMAC3: Flush all station entries in the forwarder's WOFA database. */
static void
dhd_if_flush_sta(dhd_if_t * ifp)
{
#if defined(BCM_GMAC3)

        if (ifp && (ifp->fwdh != FWDER_NULL)) {
                dhd_sta_t *sta, *next;
                unsigned long flags;

                DHD_IF_STA_LIST_LOCK(ifp, flags);

                list_for_each_entry_safe(sta, next, &ifp->sta_list, list) {
                        /* Remove any sta entry from WOFA forwarder. */
                        fwder_flush(ifp->fwdh, (wofa_t)sta);
                }

                DHD_IF_STA_LIST_UNLOCK(ifp, flags);
        }
#endif /* BCM_GMAC3 */
}

/** Construct a pool of dhd_sta_t objects to be used by interfaces. */
static int
dhd_sta_pool_init(dhd_pub_t *dhdp, int max_sta)
{
        int idx, prio, sta_pool_memsz;
        dhd_sta_t * sta;
        dhd_sta_pool_t * sta_pool;
        void * staid_allocator;

        ASSERT(dhdp != (dhd_pub_t *)NULL);
        ASSERT((dhdp->staid_allocator == NULL) && (dhdp->sta_pool == NULL));

        /* dhd_sta objects per radio are managed in a table. id#0 reserved. */
        staid_allocator = id16_map_init(dhdp->osh, max_sta, 1);
        if (staid_allocator == NULL) {
                DHD_ERROR(("%s: sta id allocator init failure\n", __FUNCTION__));
                return BCME_ERROR;
        }

        /* Pre allocate a pool of dhd_sta objects (one extra). */
        sta_pool_memsz = ((max_sta + 1) * sizeof(dhd_sta_t)); /* skip idx 0 */
        sta_pool = (dhd_sta_pool_t *)MALLOC(dhdp->osh, sta_pool_memsz);
        if (sta_pool == NULL) {
                DHD_ERROR(("%s: sta table alloc failure\n", __FUNCTION__));
                id16_map_fini(dhdp->osh, staid_allocator);
                return BCME_ERROR;
        }

        dhdp->sta_pool = sta_pool;
        dhdp->staid_allocator = staid_allocator;

        /* Initialize all sta(s) for the pre-allocated free pool. */
        bzero((uchar *)sta_pool, sta_pool_memsz);
        for (idx = max_sta; idx >= 1; idx--) { /* skip sta_pool[0] */
                sta = &sta_pool[idx];
                sta->idx = id16_map_alloc(staid_allocator);
                ASSERT(sta->idx <= max_sta);
        }
        /* Now place them into the pre-allocated free pool. */
        for (idx = 1; idx <= max_sta; idx++) {
                sta = &sta_pool[idx];
                for (prio = 0; prio < (int)NUMPRIO; prio++) {
                        sta->flowid[prio] = FLOWID_INVALID; /* Flow rings do not exist */
                }
                dhd_sta_free(dhdp, sta);
        }

        return BCME_OK;
}

/** Destruct the pool of dhd_sta_t objects.
 * Caller must ensure that no STA objects are currently associated with an if.
 */
static void
dhd_sta_pool_fini(dhd_pub_t *dhdp, int max_sta)
{
        dhd_sta_pool_t * sta_pool = (dhd_sta_pool_t *)dhdp->sta_pool;

        if (sta_pool) {
                int idx;
                int sta_pool_memsz = ((max_sta + 1) * sizeof(dhd_sta_t));
                for (idx = 1; idx <= max_sta; idx++) {
                        ASSERT(sta_pool[idx].ifp == DHD_IF_NULL);
                        ASSERT(sta_pool[idx].idx == ID16_INVALID);
                }
                MFREE(dhdp->osh, dhdp->sta_pool, sta_pool_memsz);
                dhdp->sta_pool = NULL;
        }

        id16_map_fini(dhdp->osh, dhdp->staid_allocator);
        dhdp->staid_allocator = NULL;
}

/* Clear the pool of dhd_sta_t objects for built-in type driver */
static void
dhd_sta_pool_clear(dhd_pub_t *dhdp, int max_sta)
{
        int idx, prio, sta_pool_memsz;
        dhd_sta_t * sta;
        dhd_sta_pool_t * sta_pool;
        void *staid_allocator;

        if (!dhdp) {
                DHD_ERROR(("%s: dhdp is NULL\n", __FUNCTION__));
                return;
        }

        sta_pool = (dhd_sta_pool_t *)dhdp->sta_pool;
        staid_allocator = dhdp->staid_allocator;

        if (!sta_pool) {
                DHD_ERROR(("%s: sta_pool is NULL\n", __FUNCTION__));
                return;
        }

        if (!staid_allocator) {
                DHD_ERROR(("%s: staid_allocator is NULL\n", __FUNCTION__));
                return;
        }

        /* clear free pool */
        sta_pool_memsz = ((max_sta + 1) * sizeof(dhd_sta_t));
        bzero((uchar *)sta_pool, sta_pool_memsz);

        /* dhd_sta objects per radio are managed in a table. id#0 reserved. */
        id16_map_clear(staid_allocator, max_sta, 1);

        /* Initialize all sta(s) for the pre-allocated free pool. */
        for (idx = max_sta; idx >= 1; idx--) { /* skip sta_pool[0] */
                sta = &sta_pool[idx];
                sta->idx = id16_map_alloc(staid_allocator);
                ASSERT(sta->idx <= max_sta);
        }
        /* Now place them into the pre-allocated free pool. */
        for (idx = 1; idx <= max_sta; idx++) {
                sta = &sta_pool[idx];
                for (prio = 0; prio < (int)NUMPRIO; prio++) {
                        sta->flowid[prio] = FLOWID_INVALID; /* Flow rings do not exist */
                }
                dhd_sta_free(dhdp, sta);
        }
}

/** Find STA with MAC address ea in an interface's STA list. */
dhd_sta_t *
dhd_find_sta(void *pub, int ifidx, void *ea)
{
        dhd_sta_t *sta;
        dhd_if_t *ifp;
        unsigned long flags;

        ASSERT(ea != NULL);
        ifp = dhd_get_ifp((dhd_pub_t *)pub, ifidx);
        if (ifp == NULL)
                return DHD_STA_NULL;

        DHD_IF_STA_LIST_LOCK(ifp, flags);

        list_for_each_entry(sta, &ifp->sta_list, list) {
                if (!memcmp(sta->ea.octet, ea, ETHER_ADDR_LEN)) {
                        DHD_IF_STA_LIST_UNLOCK(ifp, flags);
                        return sta;
                }
        }

        DHD_IF_STA_LIST_UNLOCK(ifp, flags);

        return DHD_STA_NULL;
}

/** Add STA into the interface's STA list. */
dhd_sta_t *
dhd_add_sta(void *pub, int ifidx, void *ea)
{
        dhd_sta_t *sta;
        dhd_if_t *ifp;
        unsigned long flags;

        ASSERT(ea != NULL);
        ifp = dhd_get_ifp((dhd_pub_t *)pub, ifidx);
        if (ifp == NULL)
                return DHD_STA_NULL;

        sta = dhd_sta_alloc((dhd_pub_t *)pub);
        if (sta == DHD_STA_NULL) {
                DHD_ERROR(("%s: Alloc failed\n", __FUNCTION__));
                return DHD_STA_NULL;
        }

        memcpy(sta->ea.octet, ea, ETHER_ADDR_LEN);

        /* link the sta and the dhd interface */
        sta->ifp = ifp;
        sta->ifidx = ifidx;
        INIT_LIST_HEAD(&sta->list);

        DHD_IF_STA_LIST_LOCK(ifp, flags);

        list_add_tail(&sta->list, &ifp->sta_list);

#if defined(BCM_GMAC3)
        if (ifp->fwdh) {
                ASSERT(ISALIGNED(ea, 2));
                /* Add sta to WOFA forwarder. */
                fwder_reassoc(ifp->fwdh, (uint16 *)ea, (wofa_t)sta);
        }
#endif /* BCM_GMAC3 */

        DHD_IF_STA_LIST_UNLOCK(ifp, flags);

        return sta;
}

/** Delete STA from the interface's STA list. */
void
dhd_del_sta(void *pub, int ifidx, void *ea)
{
        dhd_sta_t *sta, *next;
        dhd_if_t *ifp;
        unsigned long flags;

        ASSERT(ea != NULL);
        ifp = dhd_get_ifp((dhd_pub_t *)pub, ifidx);
        if (ifp == NULL)
                return;

        DHD_IF_STA_LIST_LOCK(ifp, flags);

        list_for_each_entry_safe(sta, next, &ifp->sta_list, list) {
                if (!memcmp(sta->ea.octet, ea, ETHER_ADDR_LEN)) {
#if defined(BCM_GMAC3)
                        if (ifp->fwdh) { /* Found a sta, remove from WOFA forwarder. */
                                ASSERT(ISALIGNED(ea, 2));
                                fwder_deassoc(ifp->fwdh, (uint16 *)ea, (wofa_t)sta);
                        }
#endif /* BCM_GMAC3 */
                        list_del(&sta->list);
                        dhd_sta_free(&ifp->info->pub, sta);
                }
        }

        DHD_IF_STA_LIST_UNLOCK(ifp, flags);
#ifdef DHD_L2_FILTER
        if (ifp->parp_enable) {
                /* clear Proxy ARP cache of specific Ethernet Address */
                bcm_l2_filter_arp_table_update(((dhd_pub_t*)pub)->osh, ifp->phnd_arp_table, FALSE,
                        ea, FALSE, ((dhd_pub_t*)pub)->tickcnt);
        }
#endif /* DHD_L2_FILTER */
        return;
}

/** Add STA if it doesn't exist. Not reentrant. */
dhd_sta_t*
dhd_findadd_sta(void *pub, int ifidx, void *ea)
{
        dhd_sta_t *sta;

        sta = dhd_find_sta(pub, ifidx, ea);

        if (!sta) {
                /* Add entry */
                sta = dhd_add_sta(pub, ifidx, ea);
        }

        return sta;
}

#if defined(DHD_IGMP_UCQUERY) || defined(DHD_UCAST_UPNP)
#if !defined(BCM_GMAC3)
static struct list_head *
dhd_sta_list_snapshot(dhd_info_t *dhd, dhd_if_t *ifp, struct list_head *snapshot_list)
{
        unsigned long flags;
        dhd_sta_t *sta, *snapshot;

        INIT_LIST_HEAD(snapshot_list);

        DHD_IF_STA_LIST_LOCK(ifp, flags);

        list_for_each_entry(sta, &ifp->sta_list, list) {
                /* allocate one and add to snapshot */
                snapshot = (dhd_sta_t *)MALLOC(dhd->pub.osh, sizeof(dhd_sta_t));
                if (snapshot == NULL) {
                        DHD_ERROR(("%s: Cannot allocate memory\n", __FUNCTION__));
                        continue;
                }

                memcpy(snapshot->ea.octet, sta->ea.octet, ETHER_ADDR_LEN);

                INIT_LIST_HEAD(&snapshot->list);
                list_add_tail(&snapshot->list, snapshot_list);
        }

        DHD_IF_STA_LIST_UNLOCK(ifp, flags);

        return snapshot_list;
}

static void
dhd_sta_list_snapshot_free(dhd_info_t *dhd, struct list_head *snapshot_list)
{
        dhd_sta_t *sta, *next;

        list_for_each_entry_safe(sta, next, snapshot_list, list) {
                list_del(&sta->list);
                MFREE(dhd->pub.osh, sta, sizeof(dhd_sta_t));
        }
}
#endif /* !BCM_GMAC3 */
#endif /* DHD_IGMP_UCQUERY || DHD_UCAST_UPNP */

#else
static inline void dhd_if_flush_sta(dhd_if_t * ifp) { }
static inline void dhd_if_del_sta_list(dhd_if_t *ifp) {}
static inline int dhd_sta_pool_init(dhd_pub_t *dhdp, int max_sta) { return BCME_OK; }
static inline void dhd_sta_pool_fini(dhd_pub_t *dhdp, int max_sta) {}
static inline void dhd_sta_pool_clear(dhd_pub_t *dhdp, int max_sta) {}
dhd_sta_t *dhd_findadd_sta(void *pub, int ifidx, void *ea) { return NULL; }
void dhd_del_sta(void *pub, int ifidx, void *ea) {}
#endif /* PCIE_FULL_DONGLE */


#if defined(DHD_LB)

#if defined(DHD_LB_TXC) || defined(DHD_LB_RXC)
/**
 * dhd_tasklet_schedule - Function that runs in IPI context of the destination
 * CPU and schedules a tasklet.
 * @tasklet: opaque pointer to the tasklet
 */
static INLINE void
dhd_tasklet_schedule(void *tasklet)
{
        tasklet_schedule((struct tasklet_struct *)tasklet);
}

/**
 * dhd_tasklet_schedule_on - Executes the passed takslet in a given CPU
 * @tasklet: tasklet to be scheduled
 * @on_cpu: cpu core id
 *
 * If the requested cpu is online, then an IPI is sent to this cpu via the
 * smp_call_function_single with no wait and the tasklet_schedule function
 * will be invoked to schedule the specified tasklet on the requested CPU.
 */
static void
dhd_tasklet_schedule_on(struct tasklet_struct *tasklet, int on_cpu)
{
        const int wait = 0;
        smp_call_function_single(on_cpu,
                dhd_tasklet_schedule, (void *)tasklet, wait);
}
#endif /* DHD_LB_TXC || DHD_LB_RXC */


#if defined(DHD_LB_TXC)
/**
 * dhd_lb_tx_compl_dispatch - load balance by dispatching the tx_compl_tasklet
 * on another cpu. The tx_compl_tasklet will take care of DMA unmapping and
 * freeing the packets placed in the tx_compl workq
 */
void
dhd_lb_tx_compl_dispatch(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = dhdp->info;
        int curr_cpu, on_cpu;

        if (dhd->rx_napi_netdev == NULL) {
                DHD_ERROR(("%s: dhd->rx_napi_netdev is NULL\n", __FUNCTION__));
                return;
        }

        DHD_LB_STATS_INCR(dhd->txc_sched_cnt);
        /*
         * If the destination CPU is NOT online or is same as current CPU
         * no need to schedule the work
         */
        curr_cpu = get_cpu();
        put_cpu();

        on_cpu = atomic_read(&dhd->tx_compl_cpu);

        if ((on_cpu == curr_cpu) || (!cpu_online(on_cpu))) {
                dhd_tasklet_schedule(&dhd->tx_compl_tasklet);
        } else {
                schedule_work(&dhd->tx_compl_dispatcher_work);
        }
}

static void dhd_tx_compl_dispatcher_fn(struct work_struct * work)
{
        struct dhd_info *dhd =
                container_of(work, struct dhd_info, tx_compl_dispatcher_work);
        int cpu;

        get_online_cpus();
        cpu = atomic_read(&dhd->tx_compl_cpu);
        if (!cpu_online(cpu))
                dhd_tasklet_schedule(&dhd->tx_compl_tasklet);
        else
                dhd_tasklet_schedule_on(&dhd->tx_compl_tasklet, cpu);
        put_online_cpus();
}

#endif /* DHD_LB_TXC */


#if defined(DHD_LB_RXC)
/**
 * dhd_lb_rx_compl_dispatch - load balance by dispatching the rx_compl_tasklet
 * on another cpu. The rx_compl_tasklet will take care of reposting rx buffers
 * in the H2D RxBuffer Post common ring, by using the recycled pktids that were
 * placed in the rx_compl workq.
 *
 * @dhdp: pointer to dhd_pub object
 */
void
dhd_lb_rx_compl_dispatch(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = dhdp->info;
        int curr_cpu, on_cpu;

        if (dhd->rx_napi_netdev == NULL) {
                DHD_ERROR(("%s: dhd->rx_napi_netdev is NULL\n", __FUNCTION__));
                return;
        }

        DHD_LB_STATS_INCR(dhd->rxc_sched_cnt);
        /*
         * If the destination CPU is NOT online or is same as current CPU
         * no need to schedule the work
         */
        curr_cpu = get_cpu();
        put_cpu();

        on_cpu = atomic_read(&dhd->rx_compl_cpu);

        if ((on_cpu == curr_cpu) || (!cpu_online(on_cpu))) {
                dhd_tasklet_schedule(&dhd->rx_compl_tasklet);
        } else {
                schedule_work(&dhd->rx_compl_dispatcher_work);
        }
}

static void dhd_rx_compl_dispatcher_fn(struct work_struct * work)
{
        struct dhd_info *dhd =
                container_of(work, struct dhd_info, rx_compl_dispatcher_work);
        int cpu;

        get_online_cpus();
        cpu = atomic_read(&dhd->tx_compl_cpu);
        if (!cpu_online(cpu))
                dhd_tasklet_schedule(&dhd->rx_compl_tasklet);
        else
                dhd_tasklet_schedule_on(&dhd->rx_compl_tasklet, cpu);
        put_online_cpus();
}

#endif /* DHD_LB_RXC */


#if defined(DHD_LB_RXP)
/**
 * dhd_napi_poll - Load balance napi poll function to process received
 * packets and send up the network stack using netif_receive_skb()
 *
 * @napi: napi object in which context this poll function is invoked
 * @budget: number of packets to be processed.
 *
 * Fetch the dhd_info given the rx_napi_struct. Move all packets from the
 * rx_napi_queue into a local rx_process_queue (lock and queue move and unlock).
 * Dequeue each packet from head of rx_process_queue, fetch the ifid from the
 * packet tag and sendup.
 */
static int
dhd_napi_poll(struct napi_struct *napi, int budget)
{
        int ifid;
        const int pkt_count = 1;
        const int chan = 0;
        struct sk_buff * skb;
        unsigned long flags;
        struct dhd_info *dhd;
        int processed = 0;
        struct sk_buff_head rx_process_queue;

        dhd = container_of(napi, struct dhd_info, rx_napi_struct);
        DHD_INFO(("%s napi_queue<%d> budget<%d>\n",
                __FUNCTION__, skb_queue_len(&dhd->rx_napi_queue), budget));

        __skb_queue_head_init(&rx_process_queue);

        /* extract the entire rx_napi_queue into local rx_process_queue */
        spin_lock_irqsave(&dhd->rx_napi_queue.lock, flags);
        skb_queue_splice_tail_init(&dhd->rx_napi_queue, &rx_process_queue);
        spin_unlock_irqrestore(&dhd->rx_napi_queue.lock, flags);

        while ((skb = __skb_dequeue(&rx_process_queue)) != NULL) {
                OSL_PREFETCH(skb->data);

                ifid = DHD_PKTTAG_IFID((dhd_pkttag_fr_t *)PKTTAG(skb));

                DHD_INFO(("%s dhd_rx_frame pkt<%p> ifid<%d>\n",
                        __FUNCTION__, skb, ifid));

                dhd_rx_frame(&dhd->pub, ifid, skb, pkt_count, chan);
                processed++;
        }

        DHD_LB_STATS_UPDATE_NAPI_HISTO(&dhd->pub, processed);

        DHD_INFO(("%s processed %d\n", __FUNCTION__, processed));
        napi_complete(napi);

        return budget - 1;
}

/**
 * dhd_napi_schedule - Place the napi struct into the current cpus softnet napi
 * poll list. This function may be invoked via the smp_call_function_single
 * from a remote CPU.
 *
 * This function will essentially invoke __raise_softirq_irqoff(NET_RX_SOFTIRQ)
 * after the napi_struct is added to the softnet data's poll_list
 *
 * @info: pointer to a dhd_info struct
 */
static void
dhd_napi_schedule(void *info)
{
        dhd_info_t *dhd = (dhd_info_t *)info;

        DHD_INFO(("%s rx_napi_struct<%p> on cpu<%d>\n",
                __FUNCTION__, &dhd->rx_napi_struct, atomic_read(&dhd->rx_napi_cpu)));

        /* add napi_struct to softnet data poll list and raise NET_RX_SOFTIRQ */
        if (napi_schedule_prep(&dhd->rx_napi_struct)) {
                __napi_schedule(&dhd->rx_napi_struct);
                DHD_LB_STATS_PERCPU_ARR_INCR(dhd->napi_percpu_run_cnt);
        }

        /*
         * If the rx_napi_struct was already running, then we let it complete
         * processing all its packets. The rx_napi_struct may only run on one
         * core at a time, to avoid out-of-order handling.
         */
}

/**
 * dhd_napi_schedule_on - API to schedule on a desired CPU core a NET_RX_SOFTIRQ
 * action after placing the dhd's rx_process napi object in the the remote CPU's
 * softnet data's poll_list.
 *
 * @dhd: dhd_info which has the rx_process napi object
 * @on_cpu: desired remote CPU id
 */
static INLINE int
dhd_napi_schedule_on(dhd_info_t *dhd, int on_cpu)
{
        int wait = 0; /* asynchronous IPI */

        DHD_INFO(("%s dhd<%p> napi<%p> on_cpu<%d>\n",
                __FUNCTION__, dhd, &dhd->rx_napi_struct, on_cpu));

        if (smp_call_function_single(on_cpu, dhd_napi_schedule, dhd, wait)) {
                DHD_ERROR(("%s smp_call_function_single on_cpu<%d> failed\n",
                        __FUNCTION__, on_cpu));
        }

        DHD_LB_STATS_INCR(dhd->napi_sched_cnt);

        return 0;
}

/*
 * Call get_online_cpus/put_online_cpus around dhd_napi_schedule_on
 * Why should we do this?
 * The candidacy algorithm is run from the call back function
 * registered to CPU hotplug notifier. This call back happens from Worker
 * context. The dhd_napi_schedule_on is also from worker context.
 * Note that both of this can run on two different CPUs at the same time.
 * So we can possibly have a window where a given CPUn is being brought
 * down from CPUm while we try to run a function on CPUn.
 * To prevent this its better have the whole code to execute an SMP
 * function under get_online_cpus.
 * This function call ensures that hotplug mechanism does not kick-in
 * until we are done dealing with online CPUs
 * If the hotplug worker is already running, no worries because the
 * candidacy algo would then reflect the same in dhd->rx_napi_cpu.
 *
 * The below mentioned code structure is proposed in
 * https://www.kernel.org/doc/Documentation/cpu-hotplug.txt
 * for the question
 * Q: I need to ensure that a particular cpu is not removed when there is some
 *    work specific to this cpu is in progress
 *
 * According to the documentation calling get_online_cpus is NOT required, if
 * we are running from tasklet context. Since dhd_rx_napi_dispatcher_fn can
 * run from Work Queue context we have to call these functions
 */
static void dhd_rx_napi_dispatcher_fn(struct work_struct * work)
{
        struct dhd_info *dhd =
                container_of(work, struct dhd_info, rx_napi_dispatcher_work);
        int cpu;

        get_online_cpus();
        cpu = atomic_read(&dhd->rx_napi_cpu);
        if (!cpu_online(cpu))
                dhd_napi_schedule(dhd);
        else
                dhd_napi_schedule_on(dhd, cpu);
        put_online_cpus();
}

/**
 * dhd_lb_rx_napi_dispatch - load balance by dispatching the rx_napi_struct
 * to run on another CPU. The rx_napi_struct's poll function will retrieve all
 * the packets enqueued into the rx_napi_queue and sendup.
 * The producer's rx packet queue is appended to the rx_napi_queue before
 * dispatching the rx_napi_struct.
 */
void
dhd_lb_rx_napi_dispatch(dhd_pub_t *dhdp)
{
        unsigned long flags;
        dhd_info_t *dhd = dhdp->info;
        int curr_cpu;
        int on_cpu;

        if (dhd->rx_napi_netdev == NULL) {
                DHD_ERROR(("%s: dhd->rx_napi_netdev is NULL\n", __FUNCTION__));
                return;
        }

        DHD_INFO(("%s append napi_queue<%d> pend_queue<%d>\n", __FUNCTION__,
                skb_queue_len(&dhd->rx_napi_queue), skb_queue_len(&dhd->rx_pend_queue)));

        /* append the producer's queue of packets to the napi's rx process queue */
        spin_lock_irqsave(&dhd->rx_napi_queue.lock, flags);
        skb_queue_splice_tail_init(&dhd->rx_pend_queue, &dhd->rx_napi_queue);
        spin_unlock_irqrestore(&dhd->rx_napi_queue.lock, flags);

        /*
         * If the destination CPU is NOT online or is same as current CPU
         * no need to schedule the work
         */
        curr_cpu = get_cpu();
        put_cpu();

        on_cpu = atomic_read(&dhd->rx_napi_cpu);

        if ((on_cpu == curr_cpu) || (!cpu_online(on_cpu))) {
                dhd_napi_schedule(dhd);
        } else {
                schedule_work(&dhd->rx_napi_dispatcher_work);
        }
}

/**
 * dhd_lb_rx_pkt_enqueue - Enqueue the packet into the producer's queue
 */
void
dhd_lb_rx_pkt_enqueue(dhd_pub_t *dhdp, void *pkt, int ifidx)
{
        dhd_info_t *dhd = dhdp->info;

        DHD_INFO(("%s enqueue pkt<%p> ifidx<%d> pend_queue<%d>\n", __FUNCTION__,
                pkt, ifidx, skb_queue_len(&dhd->rx_pend_queue)));
        DHD_PKTTAG_SET_IFID((dhd_pkttag_fr_t *)PKTTAG(pkt), ifidx);
        __skb_queue_tail(&dhd->rx_pend_queue, pkt);
}
#endif /* DHD_LB_RXP */

#endif /* DHD_LB */

static void dhd_memdump_work_handler(struct work_struct * work)
{
        struct dhd_info *dhd =
                container_of(work, struct dhd_info, dhd_memdump_work.work);

        BCM_REFERENCE(dhd);
#ifdef BCMPCIE
        dhd_prot_collect_memdump(&dhd->pub);
#endif
}


/** Returns dhd iflist index corresponding the the bssidx provided by apps */
int dhd_bssidx2idx(dhd_pub_t *dhdp, uint32 bssidx)
{
        dhd_if_t *ifp;
        dhd_info_t *dhd = dhdp->info;
        int i;

        ASSERT(bssidx < DHD_MAX_IFS);
        ASSERT(dhdp);

        for (i = 0; i < DHD_MAX_IFS; i++) {
                ifp = dhd->iflist[i];
                if (ifp && (ifp->bssidx == bssidx)) {
                        DHD_TRACE(("Index manipulated for %s from %d to %d\n",
                                ifp->name, bssidx, i));
                        break;
                }
        }
        return i;
}

static inline int dhd_rxf_enqueue(dhd_pub_t *dhdp, void* skb)
{
        uint32 store_idx;
        uint32 sent_idx;

        if (!skb) {
                DHD_ERROR(("dhd_rxf_enqueue: NULL skb!!!\n"));
                return BCME_ERROR;
        }

        dhd_os_rxflock(dhdp);
        store_idx = dhdp->store_idx;
        sent_idx = dhdp->sent_idx;
        if (dhdp->skbbuf[store_idx] != NULL) {
                /* Make sure the previous packets are processed */
                dhd_os_rxfunlock(dhdp);
#ifdef RXF_DEQUEUE_ON_BUSY
                DHD_TRACE(("dhd_rxf_enqueue: pktbuf not consumed %p, store idx %d sent idx %d\n",
                        skb, store_idx, sent_idx));
                return BCME_BUSY;
#else /* RXF_DEQUEUE_ON_BUSY */
                DHD_ERROR(("dhd_rxf_enqueue: pktbuf not consumed %p, store idx %d sent idx %d\n",
                        skb, store_idx, sent_idx));
                /* removed msleep here, should use wait_event_timeout if we
                 * want to give rx frame thread a chance to run
                 */
#if defined(WAIT_DEQUEUE)
                OSL_SLEEP(1);
#endif
                return BCME_ERROR;
#endif /* RXF_DEQUEUE_ON_BUSY */
        }
        DHD_TRACE(("dhd_rxf_enqueue: Store SKB %p. idx %d -> %d\n",
                skb, store_idx, (store_idx + 1) & (MAXSKBPEND - 1)));
        dhdp->skbbuf[store_idx] = skb;
        dhdp->store_idx = (store_idx + 1) & (MAXSKBPEND - 1);
        dhd_os_rxfunlock(dhdp);

        return BCME_OK;
}

static inline void* dhd_rxf_dequeue(dhd_pub_t *dhdp)
{
        uint32 store_idx;
        uint32 sent_idx;
        void *skb;

        dhd_os_rxflock(dhdp);

        store_idx = dhdp->store_idx;
        sent_idx = dhdp->sent_idx;
        skb = dhdp->skbbuf[sent_idx];

        if (skb == NULL) {
                dhd_os_rxfunlock(dhdp);
                DHD_ERROR(("dhd_rxf_dequeue: Dequeued packet is NULL, store idx %d sent idx %d\n",
                        store_idx, sent_idx));
                return NULL;
        }

        dhdp->skbbuf[sent_idx] = NULL;
        dhdp->sent_idx = (sent_idx + 1) & (MAXSKBPEND - 1);

        DHD_TRACE(("dhd_rxf_dequeue: netif_rx_ni(%p), sent idx %d\n",
                skb, sent_idx));

        dhd_os_rxfunlock(dhdp);

        return skb;
}

int dhd_process_cid_mac(dhd_pub_t *dhdp, bool prepost)
{
        dhd_info_t *dhd = (dhd_info_t *)dhdp->info;

        if (prepost) { /* pre process */
                dhd_read_macaddr(dhd);
        } else { /* post process */
                dhd_write_macaddr(&dhd->pub.mac);
        }

        return 0;
}

#if defined(PKT_FILTER_SUPPORT) && !defined(GAN_LITE_NAT_KEEPALIVE_FILTER)
static bool
_turn_on_arp_filter(dhd_pub_t *dhd, int op_mode)
{
        bool _apply = FALSE;
        /* In case of IBSS mode, apply arp pkt filter */
        if (op_mode & DHD_FLAG_IBSS_MODE) {
                _apply = TRUE;
                goto exit;
        }
        /* In case of P2P GO or GC, apply pkt filter to pass arp pkt to host */
        if ((dhd->arp_version == 1) &&
                (op_mode & (DHD_FLAG_P2P_GC_MODE | DHD_FLAG_P2P_GO_MODE))) {
                _apply = TRUE;
                goto exit;
        }

exit:
        return _apply;
}
#endif /* PKT_FILTER_SUPPORT && !GAN_LITE_NAT_KEEPALIVE_FILTER */

void dhd_set_packet_filter(dhd_pub_t *dhd)
{
#ifdef PKT_FILTER_SUPPORT
        int i;

        DHD_TRACE(("%s: enter\n", __FUNCTION__));
        if (dhd_pkt_filter_enable) {
                for (i = 0; i < dhd->pktfilter_count; i++) {
                        dhd_pktfilter_offload_set(dhd, dhd->pktfilter[i]);
                }
        }
#endif /* PKT_FILTER_SUPPORT */
}

void dhd_enable_packet_filter(int value, dhd_pub_t *dhd)
{
#ifdef PKT_FILTER_SUPPORT
        int i;

        DHD_ERROR(("%s: enter, value = %d\n", __FUNCTION__, value));

        if ((dhd->op_mode & DHD_FLAG_HOSTAP_MODE) && value) {
                DHD_ERROR(("%s: DHD_FLAG_HOSTAP_MODE\n", __FUNCTION__));
                return;
        }
        /* 1 - Enable packet filter, only allow unicast packet to send up */
        /* 0 - Disable packet filter */
        if (dhd_pkt_filter_enable && (!value ||
            (dhd_support_sta_mode(dhd) && !dhd->dhcp_in_progress)))
        {
                for (i = 0; i < dhd->pktfilter_count; i++) {
#ifndef GAN_LITE_NAT_KEEPALIVE_FILTER
                        if (value && (i == DHD_ARP_FILTER_NUM) &&
                                !_turn_on_arp_filter(dhd, dhd->op_mode)) {
                                DHD_TRACE(("Do not turn on ARP white list pkt filter:"
                                        "val %d, cnt %d, op_mode 0x%x\n",
                                        value, i, dhd->op_mode));
                                continue;
                        }
#endif /* !GAN_LITE_NAT_KEEPALIVE_FILTER */
                        dhd_pktfilter_offload_enable(dhd, dhd->pktfilter[i],
                                value, dhd_master_mode);
                }
        }
#endif /* PKT_FILTER_SUPPORT */
}

static int dhd_set_suspend(int value, dhd_pub_t *dhd)
{
#ifndef SUPPORT_PM2_ONLY
        int power_mode = PM_MAX;
#endif /* SUPPORT_PM2_ONLY */
#ifdef SUPPORT_SENSORHUB
        uint32 shub_msreq;
#endif /* SUPPORT_SENSORHUB */
        /* wl_pkt_filter_enable_t       enable_parm; */
        char iovbuf[32];
        int bcn_li_dtim = 0; /* Default bcn_li_dtim in resume mode is 0 */
#ifdef DHD_USE_EARLYSUSPEND
#ifdef CUSTOM_BCN_TIMEOUT_IN_SUSPEND
        int bcn_timeout = 0;
#endif /* CUSTOM_BCN_TIMEOUT_IN_SUSPEND */
#ifdef CUSTOM_ROAM_TIME_THRESH_IN_SUSPEND
        int roam_time_thresh = 0;       /* (ms) */
#endif /* CUSTOM_ROAM_TIME_THRESH_IN_SUSPEND */
#ifndef ENABLE_FW_ROAM_SUSPEND
        uint roamvar = dhd->conf->roam_off_suspend;
#endif /* ENABLE_FW_ROAM_SUSPEND */
#ifdef ENABLE_BCN_LI_BCN_WAKEUP
        int bcn_li_bcn;
#endif /* ENABLE_BCN_LI_BCN_WAKEUP */
        uint nd_ra_filter = 0;
        int ret = 0;
#endif /* DHD_USE_EARLYSUSPEND */
#ifdef PASS_ALL_MCAST_PKTS
        struct dhd_info *dhdinfo;
        uint32 allmulti;
        uint i;
#endif /* PASS_ALL_MCAST_PKTS */
#ifdef DYNAMIC_SWOOB_DURATION
#ifndef CUSTOM_INTR_WIDTH
#define CUSTOM_INTR_WIDTH 100
        int intr_width = 0;
#endif /* CUSTOM_INTR_WIDTH */
#endif /* DYNAMIC_SWOOB_DURATION */

        if (!dhd)
                return -ENODEV;

#ifdef PASS_ALL_MCAST_PKTS
        dhdinfo = dhd->info;
#endif /* PASS_ALL_MCAST_PKTS */

        DHD_TRACE(("%s: enter, value = %d in_suspend=%d\n",
                __FUNCTION__, value, dhd->in_suspend));

        dhd_suspend_lock(dhd);

#ifdef CUSTOM_SET_CPUCORE
        DHD_TRACE(("%s set cpucore(suspend%d)\n", __FUNCTION__, value));
        /* set specific cpucore */
        dhd_set_cpucore(dhd, TRUE);
#endif /* CUSTOM_SET_CPUCORE */
#ifndef SUPPORT_PM2_ONLY
        if (dhd->conf->pm >= 0)
                power_mode = dhd->conf->pm;
#endif /* SUPPORT_PM2_ONLY */
        if (dhd->up) {
                if (value && dhd->in_suspend) {
#ifdef PKT_FILTER_SUPPORT
                        dhd->early_suspended = 1;
#endif
                        /* Kernel suspended */
                        DHD_ERROR(("%s: force extra Suspend setting\n", __FUNCTION__));

#ifdef SUPPORT_SENSORHUB
                        shub_msreq = 1;
                        if (dhd->info->shub_enable == 1) {
                                bcm_mkiovar("shub_msreq", (char *)&shub_msreq, 4,
                                        iovbuf, sizeof(iovbuf));
                                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR,
                                        iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                                        DHD_ERROR(("%s Sensor Hub move/stop start: failed %d\n",
                                                __FUNCTION__, ret));
                                }
                        }
#endif /* SUPPORT_SENSORHUB */

#ifndef SUPPORT_PM2_ONLY
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_PM, (char *)&power_mode,
                                sizeof(power_mode), TRUE, 0);
#endif /* SUPPORT_PM2_ONLY */

#ifdef PKT_FILTER_SUPPORT
                        /* Enable packet filter,
                         * only allow unicast packet to send up
                         */
                        dhd_enable_packet_filter(1, dhd);
#endif /* PKT_FILTER_SUPPORT */

#ifdef PASS_ALL_MCAST_PKTS
                        allmulti = 0;
                        bcm_mkiovar("allmulti", (char *)&allmulti, 4,
                                iovbuf, sizeof(iovbuf));
                        for (i = 0; i < DHD_MAX_IFS; i++) {
                                if (dhdinfo->iflist[i] && dhdinfo->iflist[i]->net)
                                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                                                sizeof(iovbuf), TRUE, i);
                        }
#endif /* PASS_ALL_MCAST_PKTS */

                        /* If DTIM skip is set up as default, force it to wake
                         * each third DTIM for better power savings.  Note that
                         * one side effect is a chance to miss BC/MC packet.
                         */
#ifdef WLTDLS
                        /* Do not set bcn_li_ditm on WFD mode */
                        if (dhd->tdls_mode) {
                                bcn_li_dtim = 0;
                        } else
#endif /* WLTDLS */
                        bcn_li_dtim = dhd_get_suspend_bcn_li_dtim(dhd);
                        bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
                                4, iovbuf, sizeof(iovbuf));
                        if (dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf),
                                TRUE, 0) < 0)
                                        DHD_ERROR(("%s: set dtim failed\n", __FUNCTION__));

#ifdef DHD_USE_EARLYSUSPEND
#ifdef CUSTOM_BCN_TIMEOUT_IN_SUSPEND
                        bcn_timeout = CUSTOM_BCN_TIMEOUT_IN_SUSPEND;
                        bcm_mkiovar("bcn_timeout", (char *)&bcn_timeout,
                                4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* CUSTOM_BCN_TIMEOUT_IN_SUSPEND */
#ifdef CUSTOM_ROAM_TIME_THRESH_IN_SUSPEND
                        roam_time_thresh = CUSTOM_ROAM_TIME_THRESH_IN_SUSPEND;
                        bcm_mkiovar("roam_time_thresh", (char *)&roam_time_thresh,
                                4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* CUSTOM_ROAM_TIME_THRESH_IN_SUSPEND */
#ifndef ENABLE_FW_ROAM_SUSPEND
                        /* Disable firmware roaming during suspend */
                        bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* ENABLE_FW_ROAM_SUSPEND */
#ifdef ENABLE_BCN_LI_BCN_WAKEUP
                        bcn_li_bcn = 0;
                        bcm_mkiovar("bcn_li_bcn", (char *)&bcn_li_bcn,
                                4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* ENABLE_BCN_LI_BCN_WAKEUP */
                        if (FW_SUPPORTED(dhd, ndoe)) {
                                /* enable IPv6 RA filter in  firmware during suspend */
                                nd_ra_filter = 1;
                                bcm_mkiovar("nd_ra_filter_enable", (char *)&nd_ra_filter, 4,
                                        iovbuf, sizeof(iovbuf));
                                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                                        sizeof(iovbuf), TRUE, 0)) < 0)
                                        DHD_ERROR(("failed to set nd_ra_filter (%d)\n",
                                                ret));
                        }
#ifdef DYNAMIC_SWOOB_DURATION
                        intr_width = CUSTOM_INTR_WIDTH;
                        bcm_mkiovar("bus:intr_width", (char *)&intr_width, 4,
                                iovbuf, sizeof(iovbuf));
                        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                                        sizeof(iovbuf), TRUE, 0)) < 0) {
                                DHD_ERROR(("failed to set intr_width (%d)\n", ret));
                        }
#endif /* DYNAMIC_SWOOB_DURATION */
#endif /* DHD_USE_EARLYSUSPEND */
                } else {
#ifdef PKT_FILTER_SUPPORT
                        dhd->early_suspended = 0;
#endif
                        /* Kernel resumed  */
                        DHD_ERROR(("%s: Remove extra suspend setting\n", __FUNCTION__));

#ifdef SUPPORT_SENSORHUB
                        shub_msreq = 0;
                        if (dhd->info->shub_enable == 1) {
                                bcm_mkiovar("shub_msreq", (char *)&shub_msreq,
                                        4, iovbuf, sizeof(iovbuf));
                                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR,
                                        iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                                                DHD_ERROR(("%s Sensor Hub move/stop stop:"
                                                        "failed %d\n", __FUNCTION__, ret));
                                }
                        }
#endif /* SUPPORT_SENSORHUB */


#ifdef DYNAMIC_SWOOB_DURATION
                        intr_width = 0;
                        bcm_mkiovar("bus:intr_width", (char *)&intr_width, 4,
                                iovbuf, sizeof(iovbuf));
                        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                                        sizeof(iovbuf), TRUE, 0)) < 0) {
                                DHD_ERROR(("failed to set intr_width (%d)\n", ret));
                        }
#endif /* DYNAMIC_SWOOB_DURATION */
#ifndef SUPPORT_PM2_ONLY
                        power_mode = PM_FAST;
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_PM, (char *)&power_mode,
                                sizeof(power_mode), TRUE, 0);
#endif /* SUPPORT_PM2_ONLY */
#ifdef PKT_FILTER_SUPPORT
                        /* disable pkt filter */
                        dhd_enable_packet_filter(0, dhd);
#endif /* PKT_FILTER_SUPPORT */
#ifdef PASS_ALL_MCAST_PKTS
                        allmulti = 1;
                        bcm_mkiovar("allmulti", (char *)&allmulti, 4,
                                iovbuf, sizeof(iovbuf));
                        for (i = 0; i < DHD_MAX_IFS; i++) {
                                if (dhdinfo->iflist[i] && dhdinfo->iflist[i]->net)
                                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                                                sizeof(iovbuf), TRUE, i);
                        }
#endif /* PASS_ALL_MCAST_PKTS */

                        /* restore pre-suspend setting for dtim_skip */
                        bcm_mkiovar("bcn_li_dtim", (char *)&bcn_li_dtim,
                                4, iovbuf, sizeof(iovbuf));

                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#ifdef DHD_USE_EARLYSUSPEND
#ifdef CUSTOM_BCN_TIMEOUT_IN_SUSPEND
                        bcn_timeout = CUSTOM_BCN_TIMEOUT;
                        bcm_mkiovar("bcn_timeout", (char *)&bcn_timeout,
                                4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* CUSTOM_BCN_TIMEOUT_IN_SUSPEND */
#ifdef CUSTOM_ROAM_TIME_THRESH_IN_SUSPEND
                        roam_time_thresh = 2000;
                        bcm_mkiovar("roam_time_thresh", (char *)&roam_time_thresh,
                                4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* CUSTOM_ROAM_TIME_THRESH_IN_SUSPEND */
#ifndef ENABLE_FW_ROAM_SUSPEND
                        roamvar = dhd_roam_disable;
                        bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* ENABLE_FW_ROAM_SUSPEND */
#ifdef ENABLE_BCN_LI_BCN_WAKEUP
                        bcn_li_bcn = 1;
                        bcm_mkiovar("bcn_li_bcn", (char *)&bcn_li_bcn,
                                4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* ENABLE_BCN_LI_BCN_WAKEUP */
                        if (FW_SUPPORTED(dhd, ndoe)) {
                                /* disable IPv6 RA filter in  firmware during suspend */
                                nd_ra_filter = 0;
                                bcm_mkiovar("nd_ra_filter_enable", (char *)&nd_ra_filter, 4,
                                        iovbuf, sizeof(iovbuf));
                                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                                        sizeof(iovbuf), TRUE, 0)) < 0)
                                        DHD_ERROR(("failed to set nd_ra_filter (%d)\n",
                                                ret));
                        }
#endif /* DHD_USE_EARLYSUSPEND */
                }
        }
        dhd_suspend_unlock(dhd);

        return 0;
}

static int dhd_suspend_resume_helper(struct dhd_info *dhd, int val, int force)
{
        dhd_pub_t *dhdp = &dhd->pub;
        int ret = 0;

        DHD_OS_WAKE_LOCK(dhdp);
        DHD_PERIM_LOCK(dhdp);

        /* Set flag when early suspend was called */
        dhdp->in_suspend = val;
        if ((force || !dhdp->suspend_disable_flag) &&
                dhd_support_sta_mode(dhdp))
        {
                ret = dhd_set_suspend(val, dhdp);
        }

        DHD_PERIM_UNLOCK(dhdp);
        DHD_OS_WAKE_UNLOCK(dhdp);
        return ret;
}

#if defined(CONFIG_HAS_EARLYSUSPEND) && defined(DHD_USE_EARLYSUSPEND)
static void dhd_early_suspend(struct early_suspend *h)
{
        struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
        DHD_TRACE_HW4(("%s: enter\n", __FUNCTION__));

        if (dhd)
                dhd_suspend_resume_helper(dhd, 1, 0);
}

static void dhd_late_resume(struct early_suspend *h)
{
        struct dhd_info *dhd = container_of(h, struct dhd_info, early_suspend);
        DHD_TRACE_HW4(("%s: enter\n", __FUNCTION__));

        if (dhd)
                dhd_suspend_resume_helper(dhd, 0, 0);
}
#endif /* CONFIG_HAS_EARLYSUSPEND && DHD_USE_EARLYSUSPEND */

/*
 * Generalized timeout mechanism.  Uses spin sleep with exponential back-off until
 * the sleep time reaches one jiffy, then switches over to task delay.  Usage:
 *
 *      dhd_timeout_start(&tmo, usec);
 *      while (!dhd_timeout_expired(&tmo))
 *              if (poll_something())
 *                      break;
 *      if (dhd_timeout_expired(&tmo))
 *              fatal();
 */

void
dhd_timeout_start(dhd_timeout_t *tmo, uint usec)
{
        tmo->limit = usec;
        tmo->increment = 0;
        tmo->elapsed = 0;
        tmo->tick = jiffies_to_usecs(1);
}

int
dhd_timeout_expired(dhd_timeout_t *tmo)
{
        /* Does nothing the first call */
        if (tmo->increment == 0) {
                tmo->increment = 1;
                return 0;
        }

        if (tmo->elapsed >= tmo->limit)
                return 1;

        /* Add the delay that's about to take place */
        tmo->elapsed += tmo->increment;

        if ((!CAN_SLEEP()) || tmo->increment < tmo->tick) {
                OSL_DELAY(tmo->increment);
                tmo->increment *= 2;
                if (tmo->increment > tmo->tick)
                        tmo->increment = tmo->tick;
        } else {
                wait_queue_head_t delay_wait;
                DECLARE_WAITQUEUE(wait, current);
                init_waitqueue_head(&delay_wait);
                add_wait_queue(&delay_wait, &wait);
                set_current_state(TASK_INTERRUPTIBLE);
                (void)schedule_timeout(1);
                remove_wait_queue(&delay_wait, &wait);
                set_current_state(TASK_RUNNING);
        }

        return 0;
}

int
dhd_net2idx(dhd_info_t *dhd, struct net_device *net)
{
        int i = 0;

        if (!dhd) {
                DHD_ERROR(("%s : DHD_BAD_IF return\n", __FUNCTION__));
                return DHD_BAD_IF;
        }

        while (i < DHD_MAX_IFS) {
                if (dhd->iflist[i] && dhd->iflist[i]->net && (dhd->iflist[i]->net == net))
                        return i;
                i++;
        }

        return DHD_BAD_IF;
}

struct net_device * dhd_idx2net(void *pub, int ifidx)
{
        struct dhd_pub *dhd_pub = (struct dhd_pub *)pub;
        struct dhd_info *dhd_info;

        if (!dhd_pub || ifidx < 0 || ifidx >= DHD_MAX_IFS)
                return NULL;
        dhd_info = dhd_pub->info;
        if (dhd_info && dhd_info->iflist[ifidx])
                return dhd_info->iflist[ifidx]->net;
        return NULL;
}

int
dhd_ifname2idx(dhd_info_t *dhd, char *name)
{
        int i = DHD_MAX_IFS;

        ASSERT(dhd);

        if (name == NULL || *name == '\0')
                return 0;

        while (--i > 0)
                if (dhd->iflist[i] && !strncmp(dhd->iflist[i]->dngl_name, name, IFNAMSIZ))
                                break;

        DHD_TRACE(("%s: return idx %d for \"%s\"\n", __FUNCTION__, i, name));

        return i;       /* default - the primary interface */
}

char *
dhd_ifname(dhd_pub_t *dhdp, int ifidx)
{
        dhd_info_t *dhd = (dhd_info_t *)dhdp->info;

        ASSERT(dhd);

        if (ifidx < 0 || ifidx >= DHD_MAX_IFS) {
                DHD_ERROR(("%s: ifidx %d out of range\n", __FUNCTION__, ifidx));
                return "<if_bad>";
        }

        if (dhd->iflist[ifidx] == NULL) {
                DHD_ERROR(("%s: null i/f %d\n", __FUNCTION__, ifidx));
                return "<if_null>";
        }

        if (dhd->iflist[ifidx]->net)
                return dhd->iflist[ifidx]->net->name;

        return "<if_none>";
}

uint8 *
dhd_bssidx2bssid(dhd_pub_t *dhdp, int idx)
{
        int i;
        dhd_info_t *dhd = (dhd_info_t *)dhdp;

        ASSERT(dhd);
        for (i = 0; i < DHD_MAX_IFS; i++)
        if (dhd->iflist[i] && dhd->iflist[i]->bssidx == idx)
                return dhd->iflist[i]->mac_addr;

        return NULL;
}


static void
_dhd_set_multicast_list(dhd_info_t *dhd, int ifidx)
{
        struct net_device *dev;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)
        struct netdev_hw_addr *ha;
#else
        struct dev_mc_list *mclist;
#endif
        uint32 allmulti, cnt;

        wl_ioctl_t ioc;
        char *buf, *bufp;
        uint buflen;
        int ret;

        if (!dhd->iflist[ifidx]) {
                DHD_ERROR(("%s : dhd->iflist[%d] was NULL\n", __FUNCTION__, ifidx));
                return;
        }
        dev = dhd->iflist[ifidx]->net;
        if (!dev)
                return;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
        netif_addr_lock_bh(dev);
#endif /* LINUX >= 2.6.27 */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)
        cnt = netdev_mc_count(dev);
#else
        cnt = dev->mc_count;
#endif /* LINUX >= 2.6.35 */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
        netif_addr_unlock_bh(dev);
#endif /* LINUX >= 2.6.27 */

        /* Determine initial value of allmulti flag */
        allmulti = (dev->flags & IFF_ALLMULTI) ? TRUE : FALSE;

#ifdef PASS_ALL_MCAST_PKTS
#ifdef PKT_FILTER_SUPPORT
        if (!dhd->pub.early_suspended)
#endif /* PKT_FILTER_SUPPORT */
                allmulti = TRUE;
#endif /* PASS_ALL_MCAST_PKTS */

        /* Send down the multicast list first. */


        buflen = sizeof("mcast_list") + sizeof(cnt) + (cnt * ETHER_ADDR_LEN);
        if (!(bufp = buf = MALLOC(dhd->pub.osh, buflen))) {
                DHD_ERROR(("%s: out of memory for mcast_list, cnt %d\n",
                        dhd_ifname(&dhd->pub, ifidx), cnt));
                return;
        }

        strncpy(bufp, "mcast_list", buflen - 1);
        bufp[buflen - 1] = '\0';
        bufp += strlen("mcast_list") + 1;

        cnt = htol32(cnt);
        memcpy(bufp, &cnt, sizeof(cnt));
        bufp += sizeof(cnt);

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
        netif_addr_lock_bh(dev);
#endif /* LINUX >= 2.6.27 */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 35)
        netdev_for_each_mc_addr(ha, dev) {
                if (!cnt)
                        break;
                memcpy(bufp, ha->addr, ETHER_ADDR_LEN);
                bufp += ETHER_ADDR_LEN;
                cnt--;
        }
#else /* LINUX < 2.6.35 */
        for (mclist = dev->mc_list; (mclist && (cnt > 0));
                        cnt--, mclist = mclist->next) {
                memcpy(bufp, (void *)mclist->dmi_addr, ETHER_ADDR_LEN);
                bufp += ETHER_ADDR_LEN;
        }
#endif /* LINUX >= 2.6.35 */
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)
        netif_addr_unlock_bh(dev);
#endif /* LINUX >= 2.6.27 */

        memset(&ioc, 0, sizeof(ioc));
        ioc.cmd = WLC_SET_VAR;
        ioc.buf = buf;
        ioc.len = buflen;
        ioc.set = TRUE;

        ret = dhd_wl_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: set mcast_list failed, cnt %d\n",
                        dhd_ifname(&dhd->pub, ifidx), cnt));
                allmulti = cnt ? TRUE : allmulti;
        }

        MFREE(dhd->pub.osh, buf, buflen);

        /* Now send the allmulti setting.  This is based on the setting in the
         * net_device flags, but might be modified above to be turned on if we
         * were trying to set some addresses and dongle rejected it...
         */

        buflen = sizeof("allmulti") + sizeof(allmulti);
        if (!(buf = MALLOC(dhd->pub.osh, buflen))) {
                DHD_ERROR(("%s: out of memory for allmulti\n", dhd_ifname(&dhd->pub, ifidx)));
                return;
        }
        allmulti = htol32(allmulti);

        if (!bcm_mkiovar("allmulti", (void*)&allmulti, sizeof(allmulti), buf, buflen)) {
                DHD_ERROR(("%s: mkiovar failed for allmulti, datalen %d buflen %u\n",
                           dhd_ifname(&dhd->pub, ifidx), (int)sizeof(allmulti), buflen));
                MFREE(dhd->pub.osh, buf, buflen);
                return;
        }


        memset(&ioc, 0, sizeof(ioc));
        ioc.cmd = WLC_SET_VAR;
        ioc.buf = buf;
        ioc.len = buflen;
        ioc.set = TRUE;

        ret = dhd_wl_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: set allmulti %d failed\n",
                           dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
        }

        MFREE(dhd->pub.osh, buf, buflen);

        /* Finally, pick up the PROMISC flag as well, like the NIC driver does */

        allmulti = (dev->flags & IFF_PROMISC) ? TRUE : FALSE;

        allmulti = htol32(allmulti);

        memset(&ioc, 0, sizeof(ioc));
        ioc.cmd = WLC_SET_PROMISC;
        ioc.buf = &allmulti;
        ioc.len = sizeof(allmulti);
        ioc.set = TRUE;

        ret = dhd_wl_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: set promisc %d failed\n",
                           dhd_ifname(&dhd->pub, ifidx), ltoh32(allmulti)));
        }
}

int
_dhd_set_mac_address(dhd_info_t *dhd, int ifidx, uint8 *addr)
{
        char buf[32];
        wl_ioctl_t ioc;
        int ret;

        if (!bcm_mkiovar("cur_etheraddr", (char*)addr, ETHER_ADDR_LEN, buf, 32)) {
                DHD_ERROR(("%s: mkiovar failed for cur_etheraddr\n", dhd_ifname(&dhd->pub, ifidx)));
                return -1;
        }
        memset(&ioc, 0, sizeof(ioc));
        ioc.cmd = WLC_SET_VAR;
        ioc.buf = buf;
        ioc.len = 32;
        ioc.set = TRUE;

        ret = dhd_wl_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (ret < 0) {
                DHD_ERROR(("%s: set cur_etheraddr failed\n", dhd_ifname(&dhd->pub, ifidx)));
        } else {
                memcpy(dhd->iflist[ifidx]->net->dev_addr, addr, ETHER_ADDR_LEN);
                if (ifidx == 0)
                        memcpy(dhd->pub.mac.octet, addr, ETHER_ADDR_LEN);
        }

        return ret;
}

#ifdef SOFTAP
extern struct net_device *ap_net_dev;
extern tsk_ctl_t ap_eth_ctl; /* ap netdev heper thread ctl */
#endif

#ifdef DHD_PSTA
/* Get psta/psr configuration configuration */
int dhd_get_psta_mode(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = dhdp->info;
        return (int)dhd->psta_mode;
}
/* Set psta/psr configuration configuration */
int dhd_set_psta_mode(dhd_pub_t *dhdp, uint32 val)
{
        dhd_info_t *dhd = dhdp->info;
        dhd->psta_mode = val;
        return 0;
}
#endif /* DHD_PSTA */

static void
dhd_ifadd_event_handler(void *handle, void *event_info, u8 event)
{
        dhd_info_t *dhd = handle;
        dhd_if_event_t *if_event = event_info;
        struct net_device *ndev;
        int ifidx, bssidx;
        int ret;
#if defined(WL_CFG80211) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0))
        struct wireless_dev *vwdev, *primary_wdev;
        struct net_device *primary_ndev;
#endif /* OEM_ANDROID && (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0)) */

        if (event != DHD_WQ_WORK_IF_ADD) {
                DHD_ERROR(("%s: unexpected event \n", __FUNCTION__));
                return;
        }

        if (!dhd) {
                DHD_ERROR(("%s: dhd info not available \n", __FUNCTION__));
                return;
        }

        if (!if_event) {
                DHD_ERROR(("%s: event data is null \n", __FUNCTION__));
                return;
        }

        dhd_net_if_lock_local(dhd);
        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK(&dhd->pub);

        ifidx = if_event->event.ifidx;
        bssidx = if_event->event.bssidx;
        DHD_TRACE(("%s: registering if with ifidx %d\n", __FUNCTION__, ifidx));

        /* This path is for non-android case */
        /* The interface name in host and in event msg are same */
        /* if name in event msg is used to create dongle if list on host */
        ndev = dhd_allocate_if(&dhd->pub, ifidx, if_event->name,
                if_event->mac, bssidx, TRUE, if_event->name);
        if (!ndev) {
                DHD_ERROR(("%s: net device alloc failed  \n", __FUNCTION__));
                goto done;
        }

#if defined(WL_CFG80211) && (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0))
        vwdev = kzalloc(sizeof(*vwdev), GFP_KERNEL);
        if (unlikely(!vwdev)) {
                DHD_ERROR(("Could not allocate wireless device\n"));
                goto done;
        }
        primary_ndev = dhd->pub.info->iflist[0]->net;
        primary_wdev = ndev_to_wdev(primary_ndev);
        vwdev->wiphy = primary_wdev->wiphy;
        vwdev->iftype = if_event->event.role;
        vwdev->netdev = ndev;
        ndev->ieee80211_ptr = vwdev;
        SET_NETDEV_DEV(ndev, wiphy_dev(vwdev->wiphy));
        DHD_ERROR(("virtual interface(%s) is created\n", if_event->name));
#endif /* OEM_ANDROID && (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 11, 0)) */

        DHD_PERIM_UNLOCK(&dhd->pub);
        ret = dhd_register_if(&dhd->pub, ifidx, TRUE);
        DHD_PERIM_LOCK(&dhd->pub);
        if (ret != BCME_OK) {
                DHD_ERROR(("%s: dhd_register_if failed\n", __FUNCTION__));
                dhd_remove_if(&dhd->pub, ifidx, TRUE);
                goto done;
        }
#ifdef PCIE_FULL_DONGLE
        /* Turn on AP isolation in the firmware for interfaces operating in AP mode */
        if (FW_SUPPORTED((&dhd->pub), ap) && (if_event->event.role != WLC_E_IF_ROLE_STA)) {
                char iovbuf[WLC_IOCTL_SMLEN];
                uint32 var_int =  1;

                memset(iovbuf, 0, sizeof(iovbuf));
                bcm_mkiovar("ap_isolate", (char *)&var_int, 4, iovbuf, sizeof(iovbuf));
                ret = dhd_wl_ioctl_cmd(&dhd->pub, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, ifidx);

                if (ret != BCME_OK) {
                        DHD_ERROR(("%s: Failed to set ap_isolate to dongle\n", __FUNCTION__));
                        dhd_remove_if(&dhd->pub, ifidx, TRUE);
                }
        }
#endif /* PCIE_FULL_DONGLE */

done:
        MFREE(dhd->pub.osh, if_event, sizeof(dhd_if_event_t));

        DHD_PERIM_UNLOCK(&dhd->pub);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);
        dhd_net_if_unlock_local(dhd);
}

static void
dhd_ifdel_event_handler(void *handle, void *event_info, u8 event)
{
        dhd_info_t *dhd = handle;
        int ifidx;
        dhd_if_event_t *if_event = event_info;


        if (event != DHD_WQ_WORK_IF_DEL) {
                DHD_ERROR(("%s: unexpected event \n", __FUNCTION__));
                return;
        }

        if (!dhd) {
                DHD_ERROR(("%s: dhd info not available \n", __FUNCTION__));
                return;
        }

        if (!if_event) {
                DHD_ERROR(("%s: event data is null \n", __FUNCTION__));
                return;
        }

        dhd_net_if_lock_local(dhd);
        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK(&dhd->pub);

        ifidx = if_event->event.ifidx;
        DHD_TRACE(("Removing interface with idx %d\n", ifidx));

        DHD_PERIM_UNLOCK(&dhd->pub);
        dhd_remove_if(&dhd->pub, ifidx, TRUE);
        DHD_PERIM_LOCK(&dhd->pub);

        MFREE(dhd->pub.osh, if_event, sizeof(dhd_if_event_t));

        DHD_PERIM_UNLOCK(&dhd->pub);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);
        dhd_net_if_unlock_local(dhd);
}

static void
dhd_set_mac_addr_handler(void *handle, void *event_info, u8 event)
{
        dhd_info_t *dhd = handle;
        dhd_if_t *ifp = event_info;

        if (event != DHD_WQ_WORK_SET_MAC) {
                DHD_ERROR(("%s: unexpected event \n", __FUNCTION__));
        }

        if (!dhd) {
                DHD_ERROR(("%s: dhd info not available \n", __FUNCTION__));
                return;
        }

        dhd_net_if_lock_local(dhd);
        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK(&dhd->pub);

#ifdef SOFTAP
        {
                unsigned long flags;
                bool in_ap = FALSE;
                DHD_GENERAL_LOCK(&dhd->pub, flags);
                in_ap = (ap_net_dev != NULL);
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);

                if (in_ap)  {
                        DHD_ERROR(("attempt to set MAC for %s in AP Mode, blocked. \n",
                                   ifp->net->name));
                        goto done;
                }
        }
#endif /* SOFTAP */

        if (ifp == NULL || !dhd->pub.up) {
                DHD_ERROR(("%s: interface info not available/down \n", __FUNCTION__));
                goto done;
        }

        DHD_ERROR(("%s: MACID is overwritten\n", __FUNCTION__));
        ifp->set_macaddress = FALSE;
        if (_dhd_set_mac_address(dhd, ifp->idx, ifp->mac_addr) == 0)
                DHD_INFO(("%s: MACID is overwritten\n", __FUNCTION__));
        else
                DHD_ERROR(("%s: _dhd_set_mac_address() failed\n", __FUNCTION__));

done:
        DHD_PERIM_UNLOCK(&dhd->pub);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);
        dhd_net_if_unlock_local(dhd);
}

static void
dhd_set_mcast_list_handler(void *handle, void *event_info, u8 event)
{
        dhd_info_t *dhd = handle;
        dhd_if_t *ifp = event_info;
        int ifidx;

        if (event != DHD_WQ_WORK_SET_MCAST_LIST) {
                DHD_ERROR(("%s: unexpected event \n", __FUNCTION__));
                return;
        }

        if (!dhd) {
                DHD_ERROR(("%s: dhd info not available \n", __FUNCTION__));
                return;
        }

        dhd_net_if_lock_local(dhd);
        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK(&dhd->pub);

#ifdef SOFTAP
        {
                bool in_ap = FALSE;
                unsigned long flags;
                DHD_GENERAL_LOCK(&dhd->pub, flags);
                in_ap = (ap_net_dev != NULL);
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);

                if (in_ap)  {
                        DHD_ERROR(("set MULTICAST list for %s in AP Mode, blocked. \n",
                                   ifp->net->name));
                        ifp->set_multicast = FALSE;
                        goto done;
                }
        }
#endif /* SOFTAP */

        if (ifp == NULL || !dhd->pub.up) {
                DHD_ERROR(("%s: interface info not available/down \n", __FUNCTION__));
                goto done;
        }

        ifidx = ifp->idx;


        _dhd_set_multicast_list(dhd, ifidx);
        DHD_INFO(("%s: set multicast list for if %d\n", __FUNCTION__, ifidx));

done:
        DHD_PERIM_UNLOCK(&dhd->pub);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);
        dhd_net_if_unlock_local(dhd);
}

static int
dhd_set_mac_address(struct net_device *dev, void *addr)
{
        int ret = 0;

        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        struct sockaddr *sa = (struct sockaddr *)addr;
        int ifidx;
        dhd_if_t *dhdif;

        ifidx = dhd_net2idx(dhd, dev);
        if (ifidx == DHD_BAD_IF)
                return -1;

        dhdif = dhd->iflist[ifidx];

        dhd_net_if_lock_local(dhd);
        memcpy(dhdif->mac_addr, sa->sa_data, ETHER_ADDR_LEN);
        dhdif->set_macaddress = TRUE;
        dhd_net_if_unlock_local(dhd);
        dhd_deferred_schedule_work(dhd->dhd_deferred_wq, (void *)dhdif, DHD_WQ_WORK_SET_MAC,
                dhd_set_mac_addr_handler, DHD_WORK_PRIORITY_LOW);
        return ret;
}

static void
dhd_set_multicast_list(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ifidx;

        ifidx = dhd_net2idx(dhd, dev);
        if (ifidx == DHD_BAD_IF)
                return;

        dhd->iflist[ifidx]->set_multicast = TRUE;
        dhd_deferred_schedule_work(dhd->dhd_deferred_wq, (void *)dhd->iflist[ifidx],
                DHD_WQ_WORK_SET_MCAST_LIST, dhd_set_mcast_list_handler, DHD_WORK_PRIORITY_LOW);
}

#ifdef PROP_TXSTATUS
int
dhd_os_wlfc_block(dhd_pub_t *pub)
{
        dhd_info_t *di = (dhd_info_t *)(pub->info);
        ASSERT(di != NULL);
        spin_lock_bh(&di->wlfc_spinlock);
        return 1;
}

int
dhd_os_wlfc_unblock(dhd_pub_t *pub)
{
        dhd_info_t *di = (dhd_info_t *)(pub->info);

        ASSERT(di != NULL);
        spin_unlock_bh(&di->wlfc_spinlock);
        return 1;
}

#endif /* PROP_TXSTATUS */

#if defined(DHD_RX_DUMP) || defined(DHD_TX_DUMP)
typedef struct {
        uint16 type;
        const char *str;
} PKTTYPE_INFO;

static const PKTTYPE_INFO packet_type_info[] =
{
        { ETHER_TYPE_IP, "IP" },
        { ETHER_TYPE_ARP, "ARP" },
        { ETHER_TYPE_BRCM, "BRCM" },
        { ETHER_TYPE_802_1X, "802.1X" },
        { ETHER_TYPE_WAI, "WAPI" },
        { 0, ""}
};

static const char *_get_packet_type_str(uint16 type)
{
        int i;
        int n = sizeof(packet_type_info)/sizeof(packet_type_info[1]) - 1;

        for (i = 0; i < n; i++) {
                if (packet_type_info[i].type == type)
                        return packet_type_info[i].str;
        }

        return packet_type_info[n].str;
}
#endif /* DHD_RX_DUMP || DHD_TX_DUMP */

#if defined(DHD_TX_DUMP)
void
dhd_tx_dump(struct net_device *ndev, osl_t *osh, void *pkt)
{
        uint8 *dump_data;
        uint16 protocol;
        char *ifname;

        dump_data = PKTDATA(osh, pkt);
        protocol = (dump_data[12] << 8) | dump_data[13];
        ifname = ndev ? ndev->name : "N/A";

        DHD_ERROR(("TX DUMP[%s] - %s\n", ifname, _get_packet_type_str(protocol)));

        if (protocol == ETHER_TYPE_802_1X) {
                dhd_dump_eapol_4way_message(ifname, dump_data, TRUE);
        }

#if defined(DHD_TX_FULL_DUMP)
        {
                int i;
                uint datalen;
                datalen = PKTLEN(osh, pkt);

                for (i = 0; i < datalen; i++) {
                        printk("%02X ", dump_data[i]);
                        if ((i & 15) == 15)
                                printk("\n");
                }
                printk("\n");
        }
#endif /* DHD_TX_FULL_DUMP */
}
#endif /* DHD_TX_DUMP */

/*  This routine do not support Packet chain feature, Currently tested for
 *  proxy arp feature
 */
int dhd_sendup(dhd_pub_t *dhdp, int ifidx, void *p)
{
        struct sk_buff *skb;
        void *skbhead = NULL;
        void *skbprev = NULL;
        dhd_if_t *ifp;
        ASSERT(!PKTISCHAINED(p));
        skb = PKTTONATIVE(dhdp->osh, p);

        ifp = dhdp->info->iflist[ifidx];
        skb->dev = ifp->net;
#if defined(BCM_GMAC3)
        /* Forwarder capable interfaces use WOFA based forwarding */
        if (ifp->fwdh) {
                struct ether_header *eh = (struct ether_header *)PKTDATA(dhdp->osh, p);
                uint16 * da = (uint16 *)(eh->ether_dhost);
                wofa_t wofa;
                ASSERT(ISALIGNED(da, 2));

                wofa = fwder_lookup(ifp->fwdh->mate, da, ifp->idx);
                if (wofa == FWDER_WOFA_INVALID) { /* Unknown MAC address */
                        if (fwder_transmit(ifp->fwdh, skb, 1, skb->dev) == FWDER_SUCCESS) {
                                return BCME_OK;
                        }
                }
                PKTFRMNATIVE(dhdp->osh, p);
                PKTFREE(dhdp->osh, p, FALSE);
                return BCME_OK;
        }
#endif /* BCM_GMAC3 */

        skb->protocol = eth_type_trans(skb, skb->dev);

        if (in_interrupt()) {
                bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE,
                        __FUNCTION__, __LINE__);
                netif_rx(skb);
        } else {
                if (dhdp->info->rxthread_enabled) {
                        if (!skbhead) {
                                skbhead = skb;
                        } else {
                                PKTSETNEXT(dhdp->osh, skbprev, skb);
                        }
                        skbprev = skb;
                } else {
                        /* If the receive is not processed inside an ISR,
                         * the softirqd must be woken explicitly to service
                         * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
                         * by netif_rx_ni(), but in earlier kernels, we need
                         * to do it manually.
                         */
                        bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE,
                                __FUNCTION__, __LINE__);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
                        netif_rx_ni(skb);
#else
                        ulong flags;
                        netif_rx(skb);
                        local_irq_save(flags);
                        RAISE_RX_SOFTIRQ();
                        local_irq_restore(flags);
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) */
                }
        }

        if (dhdp->info->rxthread_enabled && skbhead)
                dhd_sched_rxf(dhdp, skbhead);

        return BCME_OK;
}

int BCMFASTPATH
__dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, void *pktbuf)
{
        int ret = BCME_OK;
        dhd_info_t *dhd = (dhd_info_t *)(dhdp->info);
        struct ether_header *eh = NULL;
#ifdef DHD_L2_FILTER
        dhd_if_t *ifp = dhd_get_ifp(dhdp, ifidx);
#endif
#ifdef DHD_8021X_DUMP
        struct net_device *ndev;
#endif /* DHD_8021X_DUMP */

        /* Reject if down */
        if (!dhdp->up || (dhdp->busstate == DHD_BUS_DOWN)) {
                /* free the packet here since the caller won't */
                PKTCFREE(dhdp->osh, pktbuf, TRUE);
                return -ENODEV;
        }

#ifdef PCIE_FULL_DONGLE
        if (dhdp->busstate == DHD_BUS_SUSPEND) {
                DHD_ERROR(("%s : pcie is still in suspend state!!\n", __FUNCTION__));
                PKTFREE(dhdp->osh, pktbuf, TRUE);
                return -EBUSY;
        }
#endif /* PCIE_FULL_DONGLE */

#ifdef DHD_L2_FILTER
        /* if dhcp_unicast is enabled, we need to convert the */
        /* broadcast DHCP ACK/REPLY packets to Unicast. */
        if (ifp->dhcp_unicast) {
            uint8* mac_addr;
            uint8* ehptr = NULL;
            int ret;
            ret = bcm_l2_filter_get_mac_addr_dhcp_pkt(dhdp->osh, pktbuf, ifidx, &mac_addr);
            if (ret == BCME_OK) {
                /*  if given mac address having valid entry in sta list
                 *  copy the given mac address, and return with BCME_OK
                */
                if (dhd_find_sta(dhdp, ifidx, mac_addr)) {
                    ehptr = PKTDATA(dhdp->osh, pktbuf);
                    bcopy(mac_addr, ehptr + ETHER_DEST_OFFSET, ETHER_ADDR_LEN);
                }
            }
        }

        if (ifp->grat_arp && DHD_IF_ROLE_AP(dhdp, ifidx)) {
            if (bcm_l2_filter_gratuitous_arp(dhdp->osh, pktbuf) == BCME_OK) {
                        PKTCFREE(dhdp->osh, pktbuf, TRUE);
                        return BCME_ERROR;
            }
        }

        if (ifp->parp_enable && DHD_IF_ROLE_AP(dhdp, ifidx)) {
                ret = dhd_l2_filter_pkt_handle(dhdp, ifidx, pktbuf, TRUE);

                /* Drop the packets if l2 filter has processed it already
                 * otherwise continue with the normal path
                 */
                if (ret == BCME_OK) {
                        PKTCFREE(dhdp->osh, pktbuf, TRUE);
                        return BCME_ERROR;
                }
        }
#endif /* DHD_L2_FILTER */
        /* Update multicast statistic */
        if (PKTLEN(dhdp->osh, pktbuf) >= ETHER_HDR_LEN) {
                uint8 *pktdata = (uint8 *)PKTDATA(dhdp->osh, pktbuf);
                eh = (struct ether_header *)pktdata;

                if (ETHER_ISMULTI(eh->ether_dhost))
                        dhdp->tx_multicast++;
                if (ntoh16(eh->ether_type) == ETHER_TYPE_802_1X)
                        atomic_inc(&dhd->pend_8021x_cnt);
#ifdef DHD_DHCP_DUMP
                if (ntoh16(eh->ether_type) == ETHER_TYPE_IP) {
                        uint16 dump_hex;
                        uint16 source_port;
                        uint16 dest_port;
                        uint16 udp_port_pos;
                        uint8 *ptr8 = (uint8 *)&pktdata[ETHER_HDR_LEN];
                        uint8 ip_header_len = (*ptr8 & 0x0f)<<2;
                        struct net_device *net;
                        char *ifname;

                        net = dhd_idx2net(dhdp, ifidx);
                        ifname = net ? net->name : "N/A";
                        udp_port_pos = ETHER_HDR_LEN + ip_header_len;
                        source_port = (pktdata[udp_port_pos] << 8) | pktdata[udp_port_pos+1];
                        dest_port = (pktdata[udp_port_pos+2] << 8) | pktdata[udp_port_pos+3];
                        if (source_port == 0x0044 || dest_port == 0x0044) {
                                dump_hex = (pktdata[udp_port_pos+249] << 8) |
                                        pktdata[udp_port_pos+250];
                                if (dump_hex == 0x0101) {
                                        DHD_ERROR(("DHCP[%s] - DISCOVER [TX]", ifname));
                                } else if (dump_hex == 0x0102) {
                                        DHD_ERROR(("DHCP[%s] - OFFER [TX]", ifname));
                                } else if (dump_hex == 0x0103) {
                                        DHD_ERROR(("DHCP[%s] - REQUEST [TX]", ifname));
                                } else if (dump_hex == 0x0105) {
                                        DHD_ERROR(("DHCP[%s] - ACK [TX]", ifname));
                                } else {
                                        DHD_ERROR(("DHCP[%s] - 0x%X [TX]", ifname, dump_hex));
                                }
#ifdef DHD_LOSSLESS_ROAMING
                                if (dhdp->dequeue_prec_map != (uint8)ALLPRIO) {
                                        DHD_ERROR(("/%d", dhdp->dequeue_prec_map));
                                }
#endif /* DHD_LOSSLESS_ROAMING */
                                DHD_ERROR(("\n"));
                        } else if (source_port == 0x0043 || dest_port == 0x0043) {
                                DHD_ERROR(("DHCP[%s] - BOOTP [RX]\n", ifname));
                        }
                }
#endif /* DHD_DHCP_DUMP */
        } else {
                        PKTCFREE(dhdp->osh, pktbuf, TRUE);
                        return BCME_ERROR;
        }

        /* Look into the packet and update the packet priority */
#ifndef PKTPRIO_OVERRIDE
        if (PKTPRIO(pktbuf) == 0)
#endif /* !PKTPRIO_OVERRIDE */
        {
#ifdef QOS_MAP_SET
                pktsetprio_qms(pktbuf, wl_get_up_table(), FALSE);
#else
                pktsetprio(pktbuf, FALSE);
#endif /* QOS_MAP_SET */
        }


#ifdef PCIE_FULL_DONGLE
        /*
         * Lkup the per interface hash table, for a matching flowring. If one is not
         * available, allocate a unique flowid and add a flowring entry.
         * The found or newly created flowid is placed into the pktbuf's tag.
         */
        ret = dhd_flowid_update(dhdp, ifidx, dhdp->flow_prio_map[(PKTPRIO(pktbuf))], pktbuf);
        if (ret != BCME_OK) {
                PKTCFREE(dhd->pub.osh, pktbuf, TRUE);
                return ret;
        }
#endif

#if defined(DHD_TX_DUMP)
        ndev = dhd_idx2net(dhdp, ifidx);
        dhd_tx_dump(ndev, dhdp->osh, pktbuf);
#endif
        /* terence 20150901: Micky add to ajust the 802.1X priority */
        /* Set the 802.1X packet with the highest priority 7 */
        if (dhdp->conf->pktprio8021x >= 0)
                pktset8021xprio(pktbuf, dhdp->conf->pktprio8021x);

#ifdef PROP_TXSTATUS
        if (dhd_wlfc_is_supported(dhdp)) {
                /* store the interface ID */
                DHD_PKTTAG_SETIF(PKTTAG(pktbuf), ifidx);

                /* store destination MAC in the tag as well */
                DHD_PKTTAG_SETDSTN(PKTTAG(pktbuf), eh->ether_dhost);

                /* decide which FIFO this packet belongs to */
                if (ETHER_ISMULTI(eh->ether_dhost))
                        /* one additional queue index (highest AC + 1) is used for bc/mc queue */
                        DHD_PKTTAG_SETFIFO(PKTTAG(pktbuf), AC_COUNT);
                else
                        DHD_PKTTAG_SETFIFO(PKTTAG(pktbuf), WME_PRIO2AC(PKTPRIO(pktbuf)));
        } else
#endif /* PROP_TXSTATUS */
        {
                /* If the protocol uses a data header, apply it */
                dhd_prot_hdrpush(dhdp, ifidx, pktbuf);
        }

        /* Use bus module to send data frame */
#ifdef WLMEDIA_HTSF
        dhd_htsf_addtxts(dhdp, pktbuf);
#endif
#ifdef PROP_TXSTATUS
        {
                if (dhd_wlfc_commit_packets(dhdp, (f_commitpkt_t)dhd_bus_txdata,
                        dhdp->bus, pktbuf, TRUE) == WLFC_UNSUPPORTED) {
                        /* non-proptxstatus way */
#ifdef BCMPCIE
                        ret = dhd_bus_txdata(dhdp->bus, pktbuf, (uint8)ifidx);
#else
                        ret = dhd_bus_txdata(dhdp->bus, pktbuf);
#endif /* BCMPCIE */
                }
        }
#else
#ifdef BCMPCIE
        ret = dhd_bus_txdata(dhdp->bus, pktbuf, (uint8)ifidx);
#else
        ret = dhd_bus_txdata(dhdp->bus, pktbuf);
#endif /* BCMPCIE */
#endif /* PROP_TXSTATUS */

        return ret;
}

int BCMFASTPATH
dhd_sendpkt(dhd_pub_t *dhdp, int ifidx, void *pktbuf)
{
        int ret = 0;
        unsigned long flags;

        DHD_GENERAL_LOCK(dhdp, flags);
        if (dhdp->busstate == DHD_BUS_DOWN ||
                        dhdp->busstate == DHD_BUS_DOWN_IN_PROGRESS) {
                DHD_ERROR(("%s: returning as busstate=%d\n",
                        __FUNCTION__, dhdp->busstate));
                DHD_GENERAL_UNLOCK(dhdp, flags);
                PKTCFREE(dhdp->osh, pktbuf, TRUE);
                return -ENODEV;
        }
        dhdp->dhd_bus_busy_state |= DHD_BUS_BUSY_IN_SEND_PKT;
        DHD_GENERAL_UNLOCK(dhdp, flags);

#ifdef DHD_PCIE_RUNTIMEPM
        if (dhdpcie_runtime_bus_wake(dhdp, FALSE, __builtin_return_address(0))) {
                DHD_ERROR(("%s : pcie is still in suspend state!!\n", __FUNCTION__));
                PKTCFREE(dhdp->osh, pktbuf, TRUE);
                ret = -EBUSY;
                goto exit;
        }
#endif /* DHD_PCIE_RUNTIMEPM */

        ret = __dhd_sendpkt(dhdp, ifidx, pktbuf);

#ifdef DHD_PCIE_RUNTIMEPM
exit:
#endif
        DHD_GENERAL_LOCK(dhdp, flags);
        dhdp->dhd_bus_busy_state &= ~DHD_BUS_BUSY_IN_SEND_PKT;
        DHD_GENERAL_UNLOCK(dhdp, flags);
        return ret;
}

int BCMFASTPATH
dhd_start_xmit(struct sk_buff *skb, struct net_device *net)
{
        int ret;
        uint datalen;
        void *pktbuf;
        dhd_info_t *dhd = DHD_DEV_INFO(net);
        dhd_if_t *ifp = NULL;
        int ifidx;
        unsigned long flags;
#ifdef WLMEDIA_HTSF
        uint8 htsfdlystat_sz = dhd->pub.htsfdlystat_sz;
#else
        uint8 htsfdlystat_sz = 0;
#endif 
#ifdef DHD_WMF
        struct ether_header *eh;
        uint8 *iph;
#endif /* DHD_WMF */

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));


#ifdef PCIE_FULL_DONGLE
        DHD_GENERAL_LOCK(&dhd->pub, flags);
        dhd->pub.dhd_bus_busy_state |= DHD_BUS_BUSY_IN_TX;
        DHD_GENERAL_UNLOCK(&dhd->pub, flags);
#endif /* PCIE_FULL_DONGLE */

#ifdef DHD_PCIE_RUNTIMEPM
        if (dhdpcie_runtime_bus_wake(&dhd->pub, FALSE, dhd_start_xmit)) {
                /* In order to avoid pkt loss. Return NETDEV_TX_BUSY until run-time resumed. */
                /* stop the network queue temporarily until resume done */
                DHD_GENERAL_LOCK(&dhd->pub, flags);
                if (!dhdpcie_is_resume_done(&dhd->pub)) {
                        dhd_bus_stop_queue(dhd->pub.bus);
                }
                dhd->pub.dhd_bus_busy_state &= ~DHD_BUS_BUSY_IN_TX;
                dhd_os_busbusy_wake(&dhd->pub);
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20))
                return -ENODEV;
#else
                return NETDEV_TX_BUSY;
#endif
        }
#endif /* DHD_PCIE_RUNTIMEPM */

        DHD_GENERAL_LOCK(&dhd->pub, flags);
#ifdef PCIE_FULL_DONGLE
        if (dhd->pub.busstate == DHD_BUS_SUSPEND) {
                dhd->pub.dhd_bus_busy_state &= ~DHD_BUS_BUSY_IN_TX;
                dhd_os_busbusy_wake(&dhd->pub);
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20))
                return -ENODEV;
#else
                return NETDEV_TX_BUSY;
#endif
        }
#endif /* PCIE_FULL_DONGLE */

        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK_TRY(DHD_FWDER_UNIT(dhd), lock_taken);

        /* Reject if down */
        if (dhd->pub.hang_was_sent || dhd->pub.busstate == DHD_BUS_DOWN ||
                dhd->pub.busstate == DHD_BUS_DOWN_IN_PROGRESS) {
                DHD_ERROR(("%s: xmit rejected pub.up=%d busstate=%d \n",
                        __FUNCTION__, dhd->pub.up, dhd->pub.busstate));
                netif_stop_queue(net);
                /* Send Event when bus down detected during data session */
                if (dhd->pub.up && !dhd->pub.hang_was_sent) {
                        DHD_ERROR(("%s: Event HANG sent up\n", __FUNCTION__));
                        dhd->pub.hang_reason = HANG_REASON_BUS_DOWN;
                        net_os_send_hang_message(net);
                }
#ifdef PCIE_FULL_DONGLE
                dhd->pub.dhd_bus_busy_state &= ~DHD_BUS_BUSY_IN_TX;
                dhd_os_busbusy_wake(&dhd->pub);
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
#endif /* PCIE_FULL_DONGLE */
                DHD_PERIM_UNLOCK_TRY(DHD_FWDER_UNIT(dhd), lock_taken);
                DHD_OS_WAKE_UNLOCK(&dhd->pub);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20))
                return -ENODEV;
#else
                return NETDEV_TX_BUSY;
#endif
        }

        ifp = DHD_DEV_IFP(net);
        ifidx = DHD_DEV_IFIDX(net);
        BUZZZ_LOG(START_XMIT_BGN, 2, (uint32)ifidx, (uintptr)skb);

        if (ifidx == DHD_BAD_IF) {
                DHD_ERROR(("%s: bad ifidx %d\n", __FUNCTION__, ifidx));
                netif_stop_queue(net);
#ifdef PCIE_FULL_DONGLE
                dhd->pub.dhd_bus_busy_state &= ~DHD_BUS_BUSY_IN_TX;
                dhd_os_busbusy_wake(&dhd->pub);
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
#endif /* PCIE_FULL_DONGLE */
                DHD_PERIM_UNLOCK_TRY(DHD_FWDER_UNIT(dhd), lock_taken);
                DHD_OS_WAKE_UNLOCK(&dhd->pub);
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20))
                return -ENODEV;
#else
                return NETDEV_TX_BUSY;
#endif
        }
        DHD_GENERAL_UNLOCK(&dhd->pub, flags);

        ASSERT(ifidx == dhd_net2idx(dhd, net));
        ASSERT((ifp != NULL) && ((ifidx < DHD_MAX_IFS) && (ifp == dhd->iflist[ifidx])));

        bcm_object_trace_opr(skb, BCM_OBJDBG_ADD_PKT, __FUNCTION__, __LINE__);

        /* re-align socket buffer if "skb->data" is odd address */
        if (((unsigned long)(skb->data)) & 0x1) {
                unsigned char *data = skb->data;
                uint32 length = skb->len;
                PKTPUSH(dhd->pub.osh, skb, 1);
                memmove(skb->data, data, length);
                PKTSETLEN(dhd->pub.osh, skb, length);
        }

        datalen  = PKTLEN(dhd->pub.osh, skb);

        /* Make sure there's enough room for any header */
        if (skb_headroom(skb) < dhd->pub.hdrlen + htsfdlystat_sz) {
                struct sk_buff *skb2;

                DHD_INFO(("%s: insufficient headroom\n",
                          dhd_ifname(&dhd->pub, ifidx)));
                dhd->pub.tx_realloc++;

                bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE, __FUNCTION__, __LINE__);
                skb2 = skb_realloc_headroom(skb, dhd->pub.hdrlen + htsfdlystat_sz);

                dev_kfree_skb(skb);
                if ((skb = skb2) == NULL) {
                        DHD_ERROR(("%s: skb_realloc_headroom failed\n",
                                   dhd_ifname(&dhd->pub, ifidx)));
                        ret = -ENOMEM;
                        goto done;
                }
                bcm_object_trace_opr(skb, BCM_OBJDBG_ADD_PKT, __FUNCTION__, __LINE__);
        }

        /* Convert to packet */
        if (!(pktbuf = PKTFRMNATIVE(dhd->pub.osh, skb))) {
                DHD_ERROR(("%s: PKTFRMNATIVE failed\n",
                           dhd_ifname(&dhd->pub, ifidx)));
                bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE, __FUNCTION__, __LINE__);
                dev_kfree_skb_any(skb);
                ret = -ENOMEM;
                goto done;
        }

#if defined(WLMEDIA_HTSF)
        if (htsfdlystat_sz && PKTLEN(dhd->pub.osh, pktbuf) >= ETHER_ADDR_LEN) {
                uint8 *pktdata = (uint8 *)PKTDATA(dhd->pub.osh, pktbuf);
                struct ether_header *eh = (struct ether_header *)pktdata;

                if (!ETHER_ISMULTI(eh->ether_dhost) &&
                        (ntoh16(eh->ether_type) == ETHER_TYPE_IP)) {
                        eh->ether_type = hton16(ETHER_TYPE_BRCM_PKTDLYSTATS);
                }
        }
#endif 

#ifdef DHD_WMF
        eh = (struct ether_header *)PKTDATA(dhd->pub.osh, pktbuf);
        iph = (uint8 *)eh + ETHER_HDR_LEN;

        /* WMF processing for multicast packets
         * Only IPv4 packets are handled
         */
        if (ifp->wmf.wmf_enable && (ntoh16(eh->ether_type) == ETHER_TYPE_IP) &&
                (IP_VER(iph) == IP_VER_4) && (ETHER_ISMULTI(eh->ether_dhost) ||
                ((IPV4_PROT(iph) == IP_PROT_IGMP) && dhd->pub.wmf_ucast_igmp))) {
#if defined(DHD_IGMP_UCQUERY) || defined(DHD_UCAST_UPNP)
                void *sdu_clone;
                bool ucast_convert = FALSE;
#ifdef DHD_UCAST_UPNP
                uint32 dest_ip;

                dest_ip = ntoh32(*((uint32 *)(iph + IPV4_DEST_IP_OFFSET)));
                ucast_convert = dhd->pub.wmf_ucast_upnp && MCAST_ADDR_UPNP_SSDP(dest_ip);
#endif /* DHD_UCAST_UPNP */
#ifdef DHD_IGMP_UCQUERY
                ucast_convert |= dhd->pub.wmf_ucast_igmp_query &&
                        (IPV4_PROT(iph) == IP_PROT_IGMP) &&
                        (*(iph + IPV4_HLEN(iph)) == IGMPV2_HOST_MEMBERSHIP_QUERY);
#endif /* DHD_IGMP_UCQUERY */
                if (ucast_convert) {
                        dhd_sta_t *sta;
#ifdef PCIE_FULL_DONGLE
                        unsigned long flags;
#endif
                        struct list_head snapshot_list;
                        struct list_head *wmf_ucforward_list;

                        ret = NETDEV_TX_OK;

                        /* For non BCM_GMAC3 platform we need a snapshot sta_list to
                         * resolve double DHD_IF_STA_LIST_LOCK call deadlock issue.
                         */
                        wmf_ucforward_list = DHD_IF_WMF_UCFORWARD_LOCK(dhd, ifp, &snapshot_list);

                        /* Convert upnp/igmp query to unicast for each assoc STA */
                        list_for_each_entry(sta, wmf_ucforward_list, list) {
                                if ((sdu_clone = PKTDUP(dhd->pub.osh, pktbuf)) == NULL) {
                                        ret = WMF_NOP;
                                        break;
                                }
                                dhd_wmf_forward(ifp->wmf.wmfh, sdu_clone, 0, sta, 1);
                        }
                        DHD_IF_WMF_UCFORWARD_UNLOCK(dhd, wmf_ucforward_list);

#ifdef PCIE_FULL_DONGLE
                        DHD_GENERAL_LOCK(&dhd->pub, flags);
                        dhd->pub.dhd_bus_busy_state &= ~DHD_BUS_BUSY_IN_TX;
                        dhd_os_busbusy_wake(&dhd->pub);
                        DHD_GENERAL_UNLOCK(&dhd->pub, flags);
#endif /* PCIE_FULL_DONGLE */
                        DHD_PERIM_UNLOCK_TRY(DHD_FWDER_UNIT(dhd), lock_taken);
                        DHD_OS_WAKE_UNLOCK(&dhd->pub);

                        if (ret == NETDEV_TX_OK)
                                PKTFREE(dhd->pub.osh, pktbuf, TRUE);

                        return ret;
                } else
#endif /* defined(DHD_IGMP_UCQUERY) || defined(DHD_UCAST_UPNP) */
                {
                        /* There will be no STA info if the packet is coming from LAN host
                         * Pass as NULL
                         */
                        ret = dhd_wmf_packets_handle(&dhd->pub, pktbuf, NULL, ifidx, 0);
                        switch (ret) {
                        case WMF_TAKEN:
                        case WMF_DROP:
                                /* Either taken by WMF or we should drop it.
                                 * Exiting send path
                                 */
#ifdef PCIE_FULL_DONGLE
                                DHD_GENERAL_LOCK(&dhd->pub, flags);
                                dhd->pub.dhd_bus_busy_state &= ~DHD_BUS_BUSY_IN_TX;
                                dhd_os_busbusy_wake(&dhd->pub);
                                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
#endif /* PCIE_FULL_DONGLE */
                                DHD_PERIM_UNLOCK_TRY(DHD_FWDER_UNIT(dhd), lock_taken);
                                DHD_OS_WAKE_UNLOCK(&dhd->pub);
                                return NETDEV_TX_OK;
                        default:
                                /* Continue the transmit path */
                                break;
                        }
                }
        }
#endif /* DHD_WMF */
#ifdef DHD_PSTA
        /* PSR related packet proto manipulation should be done in DHD
         * since dongle doesn't have complete payload
         */
        if (PSR_ENABLED(&dhd->pub) && (dhd_psta_proc(&dhd->pub,
                ifidx, &pktbuf, TRUE) < 0)) {
                        DHD_ERROR(("%s:%s: psta send proc failed\n", __FUNCTION__,
                                dhd_ifname(&dhd->pub, ifidx)));
        }
#endif /* DHD_PSTA */

#ifdef DHDTCPACK_SUPPRESS
        if (dhd->pub.tcpack_sup_mode == TCPACK_SUP_HOLD) {
                /* If this packet has been hold or got freed, just return */
                if (dhd_tcpack_hold(&dhd->pub, pktbuf, ifidx)) {
                        ret = 0;
                        goto done;
                }
        } else {
                /* If this packet has replaced another packet and got freed, just return */
                if (dhd_tcpack_suppress(&dhd->pub, pktbuf)) {
                        ret = 0;
                        goto done;
                }
        }
#endif /* DHDTCPACK_SUPPRESS */

        /* no segmented SKB support (Kernel-3.18.y) */
        if ((PKTLINK(skb) != NULL) && (PKTLINK(skb) == skb)) {
                PKTSETLINK(skb, NULL);
        }

        ret = __dhd_sendpkt(&dhd->pub, ifidx, pktbuf);

done:
        if (ret) {
                ifp->stats.tx_dropped++;
                dhd->pub.tx_dropped++;
        } else {

#ifdef PROP_TXSTATUS
                /* tx_packets counter can counted only when wlfc is disabled */
                if (!dhd_wlfc_is_supported(&dhd->pub))
#endif
                {
                        dhd->pub.tx_packets++;
                        ifp->stats.tx_packets++;
                        ifp->stats.tx_bytes += datalen;
                }
        }

#ifdef PCIE_FULL_DONGLE
        DHD_GENERAL_LOCK(&dhd->pub, flags);
        dhd->pub.dhd_bus_busy_state &= ~DHD_BUS_BUSY_IN_TX;
        dhd_os_busbusy_wake(&dhd->pub);
        DHD_GENERAL_UNLOCK(&dhd->pub, flags);
#endif /* PCIE_FULL_DONGLE */

        DHD_PERIM_UNLOCK_TRY(DHD_FWDER_UNIT(dhd), lock_taken);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);
        BUZZZ_LOG(START_XMIT_END, 0);

        /* Return ok: we always eat the packet */
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 20))
        return 0;
#else
        return NETDEV_TX_OK;
#endif
}


void
dhd_txflowcontrol(dhd_pub_t *dhdp, int ifidx, bool state)
{
        struct net_device *net;
        dhd_info_t *dhd = dhdp->info;
        int i;

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        ASSERT(dhd);

#ifdef DHD_LOSSLESS_ROAMING
        /* block flowcontrol during roaming */
        if ((dhdp->dequeue_prec_map == 1 << PRIO_8021D_NC) && state == ON) {
                return;
        }
#endif

        if (ifidx == ALL_INTERFACES) {
                /* Flow control on all active interfaces */
                dhdp->txoff = state;
                for (i = 0; i < DHD_MAX_IFS; i++) {
                        if (dhd->iflist[i]) {
                                net = dhd->iflist[i]->net;
                                if (state == ON)
                                        netif_stop_queue(net);
                                else
                                        netif_wake_queue(net);
                        }
                }
        } else {
                if (dhd->iflist[ifidx]) {
                        net = dhd->iflist[ifidx]->net;
                        if (state == ON)
                                netif_stop_queue(net);
                        else
                                netif_wake_queue(net);
                }
        }
}


#ifdef DHD_WMF
bool
dhd_is_rxthread_enabled(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = dhdp->info;

        return dhd->rxthread_enabled;
}
#endif /* DHD_WMF */

/** Called when a frame is received by the dongle on interface 'ifidx' */
void
dhd_rx_frame(dhd_pub_t *dhdp, int ifidx, void *pktbuf, int numpkt, uint8 chan)
{
        dhd_info_t *dhd = (dhd_info_t *)dhdp->info;
        struct sk_buff *skb;
        uchar *eth;
        uint len;
        void *data, *pnext = NULL;
        int i;
        dhd_if_t *ifp;
        wl_event_msg_t event;
        int tout_rx = 0;
        int tout_ctrl = 0;
        void *skbhead = NULL;
        void *skbprev = NULL;
#if defined(DHD_RX_DUMP) || defined(DHD_8021X_DUMP) || defined(DHD_DHCP_DUMP)
        char *dump_data;
        uint16 protocol;
        char *ifname;
#endif /* DHD_RX_DUMP || DHD_8021X_DUMP || DHD_DHCP_DUMP */

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        for (i = 0; pktbuf && i < numpkt; i++, pktbuf = pnext) {
                struct ether_header *eh;

                pnext = PKTNEXT(dhdp->osh, pktbuf);
                PKTSETNEXT(dhdp->osh, pktbuf, NULL);

                ifp = dhd->iflist[ifidx];
                if (ifp == NULL) {
                        DHD_ERROR(("%s: ifp is NULL. drop packet\n",
                                __FUNCTION__));
                        PKTCFREE(dhdp->osh, pktbuf, FALSE);
                        continue;
                }

                eh = (struct ether_header *)PKTDATA(dhdp->osh, pktbuf);

                /* Dropping only data packets before registering net device to avoid kernel panic */
#ifndef PROP_TXSTATUS_VSDB
                if ((!ifp->net || ifp->net->reg_state != NETREG_REGISTERED) &&
                        (ntoh16(eh->ether_type) != ETHER_TYPE_BRCM))
#else
                if ((!ifp->net || ifp->net->reg_state != NETREG_REGISTERED || !dhd->pub.up) &&
                        (ntoh16(eh->ether_type) != ETHER_TYPE_BRCM))
#endif /* PROP_TXSTATUS_VSDB */
                {
                        DHD_ERROR(("%s: net device is NOT registered yet. drop packet\n",
                        __FUNCTION__));
                        PKTCFREE(dhdp->osh, pktbuf, FALSE);
                        continue;
                }


#ifdef PROP_TXSTATUS
                if (dhd_wlfc_is_header_only_pkt(dhdp, pktbuf)) {
                        /* WLFC may send header only packet when
                        there is an urgent message but no packet to
                        piggy-back on
                        */
                        PKTCFREE(dhdp->osh, pktbuf, FALSE);
                        continue;
                }
#endif
#ifdef DHD_L2_FILTER
                /* If block_ping is enabled drop the ping packet */
                if (ifp->block_ping) {
                        if (bcm_l2_filter_block_ping(dhdp->osh, pktbuf) == BCME_OK) {
                                PKTCFREE(dhdp->osh, pktbuf, FALSE);
                                continue;
                        }
                }
                if (ifp->grat_arp && DHD_IF_ROLE_STA(dhdp, ifidx)) {
                    if (bcm_l2_filter_gratuitous_arp(dhdp->osh, pktbuf) == BCME_OK) {
                                PKTCFREE(dhdp->osh, pktbuf, FALSE);
                                continue;
                    }
                }
                if (ifp->parp_enable && DHD_IF_ROLE_AP(dhdp, ifidx)) {
                        int ret = dhd_l2_filter_pkt_handle(dhdp, ifidx, pktbuf, FALSE);

                        /* Drop the packets if l2 filter has processed it already
                         * otherwise continue with the normal path
                         */
                        if (ret == BCME_OK) {
                                PKTCFREE(dhdp->osh, pktbuf, TRUE);
                                continue;
                        }
                }
#endif /* DHD_L2_FILTER */
#ifdef DHD_WMF
                /* WMF processing for multicast packets */
                if (ifp->wmf.wmf_enable && (ETHER_ISMULTI(eh->ether_dhost))) {
                        dhd_sta_t *sta;
                        int ret;

                        sta = dhd_find_sta(dhdp, ifidx, (void *)eh->ether_shost);
                        ret = dhd_wmf_packets_handle(dhdp, pktbuf, sta, ifidx, 1);
                        switch (ret) {
                                case WMF_TAKEN:
                                        /* The packet is taken by WMF. Continue to next iteration */
                                        continue;
                                case WMF_DROP:
                                        /* Packet DROP decision by WMF. Toss it */
                                        DHD_ERROR(("%s: WMF decides to drop packet\n",
                                                __FUNCTION__));
                                        PKTCFREE(dhdp->osh, pktbuf, FALSE);
                                        continue;
                                default:
                                        /* Continue the transmit path */
                                        break;
                        }
                }
#endif /* DHD_WMF */

#ifdef DHDTCPACK_SUPPRESS
                dhd_tcpdata_info_get(dhdp, pktbuf);
#endif
                skb = PKTTONATIVE(dhdp->osh, pktbuf);

                ASSERT(ifp);
                skb->dev = ifp->net;

#ifdef DHD_PSTA
                if (PSR_ENABLED(dhdp) && (dhd_psta_proc(dhdp, ifidx, &pktbuf, FALSE) < 0)) {
                                DHD_ERROR(("%s:%s: psta recv proc failed\n", __FUNCTION__,
                                        dhd_ifname(dhdp, ifidx)));
                }
#endif /* DHD_PSTA */

#ifdef PCIE_FULL_DONGLE
                if ((DHD_IF_ROLE_AP(dhdp, ifidx) || DHD_IF_ROLE_P2PGO(dhdp, ifidx)) &&
                        (!ifp->ap_isolate)) {
                        eh = (struct ether_header *)PKTDATA(dhdp->osh, pktbuf);
                        if (ETHER_ISUCAST(eh->ether_dhost)) {
                                if (dhd_find_sta(dhdp, ifidx, (void *)eh->ether_dhost)) {
                                        dhd_sendpkt(dhdp, ifidx, pktbuf);
                                        continue;
                                }
                        } else {
                                void *npktbuf = PKTDUP(dhdp->osh, pktbuf);
                                if (npktbuf)
                                        dhd_sendpkt(dhdp, ifidx, npktbuf);
                        }
                }
#endif /* PCIE_FULL_DONGLE */

                /* Get the protocol, maintain skb around eth_type_trans()
                 * The main reason for this hack is for the limitation of
                 * Linux 2.4 where 'eth_type_trans' uses the 'net->hard_header_len'
                 * to perform skb_pull inside vs ETH_HLEN. Since to avoid
                 * coping of the packet coming from the network stack to add
                 * BDC, Hardware header etc, during network interface registration
                 * we set the 'net->hard_header_len' to ETH_HLEN + extra space required
                 * for BDC, Hardware header etc. and not just the ETH_HLEN
                 */
                eth = skb->data;
                len = skb->len;

#if defined(DHD_RX_DUMP) || defined(DHD_8021X_DUMP) || defined(DHD_DHCP_DUMP)
                dump_data = skb->data;
                protocol = (dump_data[12] << 8) | dump_data[13];
                ifname = skb->dev ? skb->dev->name : "N/A";
#endif /* DHD_RX_DUMP || DHD_8021X_DUMP || DHD_DHCP_DUMP */
#ifdef DHD_8021X_DUMP
                if (protocol == ETHER_TYPE_802_1X) {
                        dhd_dump_eapol_4way_message(ifname, dump_data, FALSE);
                }
#endif /* DHD_8021X_DUMP */
#ifdef DHD_DHCP_DUMP
                if (protocol != ETHER_TYPE_BRCM && protocol == ETHER_TYPE_IP) {
                        uint16 dump_hex;
                        uint16 source_port;
                        uint16 dest_port;
                        uint16 udp_port_pos;
                        uint8 *ptr8 = (uint8 *)&dump_data[ETHER_HDR_LEN];
                        uint8 ip_header_len = (*ptr8 & 0x0f)<<2;

                        udp_port_pos = ETHER_HDR_LEN + ip_header_len;
                        source_port = (dump_data[udp_port_pos] << 8) | dump_data[udp_port_pos+1];
                        dest_port = (dump_data[udp_port_pos+2] << 8) | dump_data[udp_port_pos+3];
                        if (source_port == 0x0044 || dest_port == 0x0044) {
                                dump_hex = (dump_data[udp_port_pos+249] << 8) |
                                        dump_data[udp_port_pos+250];
                                if (dump_hex == 0x0101) {
                                        DHD_ERROR(("DHCP[%s] - DISCOVER [RX]\n", ifname));
                                } else if (dump_hex == 0x0102) {
                                        DHD_ERROR(("DHCP[%s] - OFFER [RX]\n", ifname));
                                } else if (dump_hex == 0x0103) {
                                        DHD_ERROR(("DHCP[%s] - REQUEST [RX]\n", ifname));
                                } else if (dump_hex == 0x0105) {
                                        DHD_ERROR(("DHCP[%s] - ACK [RX]\n", ifname));
                                } else {
                                        DHD_ERROR(("DHCP[%s] - 0x%X [RX]\n", ifname, dump_hex));
                                }
                        } else if (source_port == 0x0043 || dest_port == 0x0043) {
                                DHD_ERROR(("DHCP[%s] - BOOTP [RX]\n", ifname));
                        }
                }
#endif /* DHD_DHCP_DUMP */
#if defined(DHD_RX_DUMP)
                DHD_ERROR(("RX DUMP[%s] - %s\n", ifname, _get_packet_type_str(protocol)));
                if (protocol != ETHER_TYPE_BRCM) {
                        if (dump_data[0] == 0xFF) {
                                DHD_ERROR(("%s: BROADCAST\n", __FUNCTION__));

                                if ((dump_data[12] == 8) &&
                                        (dump_data[13] == 6)) {
                                        DHD_ERROR(("%s: ARP %d\n",
                                                __FUNCTION__, dump_data[0x15]));
                                }
                        } else if (dump_data[0] & 1) {
                                DHD_ERROR(("%s: MULTICAST: " MACDBG "\n",
                                        __FUNCTION__, MAC2STRDBG(dump_data)));
                        }
#ifdef DHD_RX_FULL_DUMP
                        {
                                int k;
                                for (k = 0; k < skb->len; k++) {
                                        printk("%02X ", dump_data[k]);
                                        if ((k & 15) == 15)
                                                printk("\n");
                                }
                                printk("\n");
                        }
#endif /* DHD_RX_FULL_DUMP */
                }
#endif /* DHD_RX_DUMP */

                skb->protocol = eth_type_trans(skb, skb->dev);

                if (skb->pkt_type == PACKET_MULTICAST) {
                        dhd->pub.rx_multicast++;
                        ifp->stats.multicast++;
                }

                skb->data = eth;
                skb->len = len;

#ifdef WLMEDIA_HTSF
                dhd_htsf_addrxts(dhdp, pktbuf);
#endif
                /* Strip header, count, deliver upward */
                skb_pull(skb, ETH_HLEN);

                /* Process special event packets and then discard them */
                memset(&event, 0, sizeof(event));
                if (ntoh16(skb->protocol) == ETHER_TYPE_BRCM) {
                        dhd_wl_host_event(dhd, &ifidx,
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 22)
                        skb_mac_header(skb),
#else
                        skb->mac.raw,
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 22) */
                        &event,
                        &data);

                        wl_event_to_host_order(&event);
                        if (!tout_ctrl)
                                tout_ctrl = DHD_PACKET_TIMEOUT_MS;

#if defined(PNO_SUPPORT)
                        if (event.event_type == WLC_E_PFN_NET_FOUND) {
                                /* enforce custom wake lock to garantee that Kernel not suspended */
                                tout_ctrl = CUSTOM_PNO_EVENT_LOCK_xTIME * DHD_PACKET_TIMEOUT_MS;
                        }
#endif /* PNO_SUPPORT */

#ifdef DHD_DONOT_FORWARD_BCMEVENT_AS_NETWORK_PKT
#ifdef DHD_USE_STATIC_CTRLBUF
                        PKTFREE_STATIC(dhdp->osh, pktbuf, FALSE);
#else
                        PKTFREE(dhdp->osh, pktbuf, FALSE);
#endif /* DHD_USE_STATIC_CTRLBUF */
                        continue;
#endif /* DHD_DONOT_FORWARD_BCMEVENT_AS_NETWORK_PKT */
                } else {
                        tout_rx = DHD_PACKET_TIMEOUT_MS;

#ifdef PROP_TXSTATUS
                        dhd_wlfc_save_rxpath_ac_time(dhdp, (uint8)PKTPRIO(skb));
#endif /* PROP_TXSTATUS */
                }

                ASSERT(ifidx < DHD_MAX_IFS && dhd->iflist[ifidx]);
                ifp = dhd->iflist[ifidx];

                if (ifp->net)
                        ifp->net->last_rx = jiffies;

                if (ntoh16(skb->protocol) != ETHER_TYPE_BRCM) {
                        dhdp->dstats.rx_bytes += skb->len;
                        dhdp->rx_packets++; /* Local count */
                        ifp->stats.rx_bytes += skb->len;
                        ifp->stats.rx_packets++;
                }

                if (in_interrupt()) {
                        bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE,
                                __FUNCTION__, __LINE__);
                        DHD_PERIM_UNLOCK_ALL((dhd->fwder_unit % FWDER_MAX_UNIT));
#if defined(DHD_LB) && defined(DHD_LB_RXP)
                        netif_receive_skb(skb);
#else
                        netif_rx(skb);
#endif /* !defined(DHD_LB) && !defined(DHD_LB_RXP) */
                        DHD_PERIM_LOCK_ALL((dhd->fwder_unit % FWDER_MAX_UNIT));
                } else {
                        if (dhd->rxthread_enabled) {
                                if (!skbhead)
                                        skbhead = skb;
                                else
                                        PKTSETNEXT(dhdp->osh, skbprev, skb);
                                skbprev = skb;
                        } else {

                                /* If the receive is not processed inside an ISR,
                                 * the softirqd must be woken explicitly to service
                                 * the NET_RX_SOFTIRQ.  In 2.6 kernels, this is handled
                                 * by netif_rx_ni(), but in earlier kernels, we need
                                 * to do it manually.
                                 */
                                bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE,
                                        __FUNCTION__, __LINE__);

#if defined(DHD_LB) && defined(DHD_LB_RXP)
                                DHD_PERIM_UNLOCK_ALL((dhd->fwder_unit % FWDER_MAX_UNIT));
                                netif_receive_skb(skb);
                                DHD_PERIM_LOCK_ALL((dhd->fwder_unit % FWDER_MAX_UNIT));
#else
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
                                DHD_PERIM_UNLOCK_ALL((dhd->fwder_unit % FWDER_MAX_UNIT));
                                netif_rx_ni(skb);
                                DHD_PERIM_LOCK_ALL((dhd->fwder_unit % FWDER_MAX_UNIT));
#else
                                ulong flags;
                                DHD_PERIM_UNLOCK_ALL((dhd->fwder_unit % FWDER_MAX_UNIT));
                                netif_rx(skb);
                                DHD_PERIM_LOCK_ALL((dhd->fwder_unit % FWDER_MAX_UNIT));
                                local_irq_save(flags);
                                RAISE_RX_SOFTIRQ();
                                local_irq_restore(flags);
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) */
#endif /* !defined(DHD_LB) && !defined(DHD_LB_RXP) */
                        }
                }
        }

        if (dhd->rxthread_enabled && skbhead)
                dhd_sched_rxf(dhdp, skbhead);

        DHD_OS_WAKE_LOCK_RX_TIMEOUT_ENABLE(dhdp, tout_rx);
        DHD_OS_WAKE_LOCK_CTRL_TIMEOUT_ENABLE(dhdp, tout_ctrl);
        DHD_OS_WAKE_LOCK_TIMEOUT(dhdp);
}

void
dhd_event(struct dhd_info *dhd, char *evpkt, int evlen, int ifidx)
{
        /* Linux version has nothing to do */
        return;
}

void
dhd_txcomplete(dhd_pub_t *dhdp, void *txp, bool success)
{
        dhd_info_t *dhd = (dhd_info_t *)(dhdp->info);
        struct ether_header *eh;
        uint16 type;

        dhd_prot_hdrpull(dhdp, NULL, txp, NULL, NULL);

        eh = (struct ether_header *)PKTDATA(dhdp->osh, txp);
        type  = ntoh16(eh->ether_type);

        if ((type == ETHER_TYPE_802_1X) && (dhd_get_pend_8021x_cnt(dhd) > 0))
                atomic_dec(&dhd->pend_8021x_cnt);

#ifdef PROP_TXSTATUS
        if (dhdp->wlfc_state && (dhdp->proptxstatus_mode != WLFC_FCMODE_NONE)) {
                dhd_if_t *ifp = dhd->iflist[DHD_PKTTAG_IF(PKTTAG(txp))];
                uint datalen  = PKTLEN(dhd->pub.osh, txp);
                if (ifp != NULL) {
                        if (success) {
                                dhd->pub.tx_packets++;
                                ifp->stats.tx_packets++;
                                ifp->stats.tx_bytes += datalen;
                        } else {
                                ifp->stats.tx_dropped++;
                        }
                }
        }
#endif
}

static struct net_device_stats *
dhd_get_stats(struct net_device *net)
{
        dhd_info_t *dhd = DHD_DEV_INFO(net);
        dhd_if_t *ifp;
        int ifidx;

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        ifidx = dhd_net2idx(dhd, net);
        if (ifidx == DHD_BAD_IF) {
                DHD_ERROR(("%s: BAD_IF\n", __FUNCTION__));

                memset(&net->stats, 0, sizeof(net->stats));
                return &net->stats;
        }

        ifp = dhd->iflist[ifidx];
        ASSERT(dhd && ifp);

        if (dhd->pub.up) {
                /* Use the protocol to get dongle stats */
                dhd_prot_dstats(&dhd->pub);
        }
        return &ifp->stats;
}

static int
dhd_watchdog_thread(void *data)
{
        tsk_ctl_t *tsk = (tsk_ctl_t *)data;
        dhd_info_t *dhd = (dhd_info_t *)tsk->parent;
        /* This thread doesn't need any user-level access,
         * so get rid of all our resources
         */
        if (dhd_watchdog_prio > 0) {
                struct sched_param param;
                param.sched_priority = (dhd_watchdog_prio < MAX_RT_PRIO)?
                        dhd_watchdog_prio:(MAX_RT_PRIO-1);
                setScheduler(current, SCHED_FIFO, &param);
        }

        while (1) {
                if (down_interruptible (&tsk->sema) == 0) {
                        unsigned long flags;
                        unsigned long jiffies_at_start = jiffies;
                        unsigned long time_lapse;

                        DHD_OS_WD_WAKE_LOCK(&dhd->pub);
                        SMP_RD_BARRIER_DEPENDS();
                        if (tsk->terminated) {
                                break;
                        }

                        if (dhd->pub.dongle_reset == FALSE) {
                                DHD_TIMER(("%s:\n", __FUNCTION__));
                                dhd_bus_watchdog(&dhd->pub);

                                DHD_GENERAL_LOCK(&dhd->pub, flags);
                                /* Count the tick for reference */
                                dhd->pub.tickcnt++;
#ifdef DHD_L2_FILTER
                                dhd_l2_filter_watchdog(&dhd->pub);
#endif /* DHD_L2_FILTER */
                                time_lapse = jiffies - jiffies_at_start;

                                /* Reschedule the watchdog */
                                if (dhd->wd_timer_valid) {
                                        mod_timer(&dhd->timer,
                                            jiffies +
                                            msecs_to_jiffies(dhd_watchdog_ms) -
                                            min(msecs_to_jiffies(dhd_watchdog_ms), time_lapse));
                                }
                                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
                        }
                        DHD_OS_WD_WAKE_UNLOCK(&dhd->pub);
                } else {
                        break;
                }
        }

        complete_and_exit(&tsk->completed, 0);
}

static void dhd_watchdog(ulong data)
{
        dhd_info_t *dhd = (dhd_info_t *)data;
        unsigned long flags;

        if (dhd->pub.dongle_reset) {
                return;
        }

        if (dhd->pub.busstate == DHD_BUS_SUSPEND) {
                DHD_ERROR(("%s wd while suspend in progress \n", __FUNCTION__));
                return;
        }

        if (dhd->thr_wdt_ctl.thr_pid >= 0) {
                up(&dhd->thr_wdt_ctl.sema);
                return;
        }

        DHD_OS_WD_WAKE_LOCK(&dhd->pub);
        /* Call the bus module watchdog */
        dhd_bus_watchdog(&dhd->pub);
        DHD_GENERAL_LOCK(&dhd->pub, flags);
        /* Count the tick for reference */
        dhd->pub.tickcnt++;

#ifdef DHD_L2_FILTER
        dhd_l2_filter_watchdog(&dhd->pub);
#endif /* DHD_L2_FILTER */
        /* Reschedule the watchdog */
        if (dhd->wd_timer_valid)
                mod_timer(&dhd->timer, jiffies + msecs_to_jiffies(dhd_watchdog_ms));
        DHD_GENERAL_UNLOCK(&dhd->pub, flags);
        DHD_OS_WD_WAKE_UNLOCK(&dhd->pub);
}

#ifdef DHD_PCIE_RUNTIMEPM
static int
dhd_rpm_state_thread(void *data)
{
        tsk_ctl_t *tsk = (tsk_ctl_t *)data;
        dhd_info_t *dhd = (dhd_info_t *)tsk->parent;

        while (1) {
                if (down_interruptible (&tsk->sema) == 0) {
                        unsigned long flags;
                        unsigned long jiffies_at_start = jiffies;
                        unsigned long time_lapse;

                        SMP_RD_BARRIER_DEPENDS();
                        if (tsk->terminated) {
                                break;
                        }

                        if (dhd->pub.dongle_reset == FALSE) {
                                DHD_TIMER(("%s:\n", __FUNCTION__));
                                if (dhd->pub.up) {
                                        dhd_runtimepm_state(&dhd->pub);
                                }

                                DHD_GENERAL_LOCK(&dhd->pub, flags);
                                time_lapse = jiffies - jiffies_at_start;

                                /* Reschedule the watchdog */
                                if (dhd->rpm_timer_valid) {
                                        mod_timer(&dhd->rpm_timer,
                                                jiffies +
                                                msecs_to_jiffies(dhd_runtimepm_ms) -
                                                min(msecs_to_jiffies(dhd_runtimepm_ms),
                                                        time_lapse));
                                }
                                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
                        }
                } else {
                        break;
                }
        }

        complete_and_exit(&tsk->completed, 0);
}

static void dhd_runtimepm(ulong data)
{
        dhd_info_t *dhd = (dhd_info_t *)data;

        if (dhd->pub.dongle_reset) {
                return;
        }

        if (dhd->thr_rpm_ctl.thr_pid >= 0) {
                up(&dhd->thr_rpm_ctl.sema);
                return;
        }
}

void dhd_runtime_pm_disable(dhd_pub_t *dhdp)
{
        dhd_os_runtimepm_timer(dhdp, 0);
        dhdpcie_runtime_bus_wake(dhdp, TRUE, __builtin_return_address(0));
        DHD_ERROR(("DHD Runtime PM Disabled \n"));
}

void dhd_runtime_pm_enable(dhd_pub_t *dhdp)
{
        dhd_os_runtimepm_timer(dhdp, dhd_runtimepm_ms);
        DHD_ERROR(("DHD Runtime PM Enabled \n"));
}

#endif /* DHD_PCIE_RUNTIMEPM */


#ifdef ENABLE_ADAPTIVE_SCHED
static void
dhd_sched_policy(int prio)
{
        struct sched_param param;
        if (cpufreq_quick_get(0) <= CUSTOM_CPUFREQ_THRESH) {
                param.sched_priority = 0;
                setScheduler(current, SCHED_NORMAL, &param);
        } else {
                if (get_scheduler_policy(current) != SCHED_FIFO) {
                        param.sched_priority = (prio < MAX_RT_PRIO)? prio : (MAX_RT_PRIO-1);
                        setScheduler(current, SCHED_FIFO, &param);
                }
        }
}
#endif /* ENABLE_ADAPTIVE_SCHED */
#ifdef DEBUG_CPU_FREQ
static int dhd_cpufreq_notifier(struct notifier_block *nb, unsigned long val, void *data)
{
        dhd_info_t *dhd = container_of(nb, struct dhd_info, freq_trans);
        struct cpufreq_freqs *freq = data;
        if (dhd) {
                if (!dhd->new_freq)
                        goto exit;
                if (val == CPUFREQ_POSTCHANGE) {
                        DHD_ERROR(("cpu freq is changed to %u kHZ on CPU %d\n",
                                freq->new, freq->cpu));
                        *per_cpu_ptr(dhd->new_freq, freq->cpu) = freq->new;
                }
        }
exit:
        return 0;
}
#endif /* DEBUG_CPU_FREQ */
static int
dhd_dpc_thread(void *data)
{
        tsk_ctl_t *tsk = (tsk_ctl_t *)data;
        dhd_info_t *dhd = (dhd_info_t *)tsk->parent;

        /* This thread doesn't need any user-level access,
         * so get rid of all our resources
         */
        if (dhd_dpc_prio > 0)
        {
                struct sched_param param;
                param.sched_priority = (dhd_dpc_prio < MAX_RT_PRIO)?dhd_dpc_prio:(MAX_RT_PRIO-1);
                setScheduler(current, SCHED_FIFO, &param);
        }

#ifdef CUSTOM_DPC_CPUCORE
        set_cpus_allowed_ptr(current, cpumask_of(CUSTOM_DPC_CPUCORE));
#else
        if (dhd->pub.conf->dpc_cpucore >= 0) {
                printf("%s: set dpc_cpucore %d from config.txt\n", __FUNCTION__, dhd->pub.conf->dpc_cpucore);
                set_cpus_allowed_ptr(current, cpumask_of(dhd->pub.conf->dpc_cpucore));
        }
#endif
#ifdef CUSTOM_SET_CPUCORE
        dhd->pub.current_dpc = current;
#endif /* CUSTOM_SET_CPUCORE */
        /* Run until signal received */
        while (1) {
                if (!binary_sema_down(tsk)) {
#ifdef ENABLE_ADAPTIVE_SCHED
                        dhd_sched_policy(dhd_dpc_prio);
#endif /* ENABLE_ADAPTIVE_SCHED */
                        SMP_RD_BARRIER_DEPENDS();
                        if (tsk->terminated) {
                                break;
                        }

                        /* Call bus dpc unless it indicated down (then clean stop) */
                        if (dhd->pub.busstate != DHD_BUS_DOWN) {
#ifdef DEBUG_DPC_THREAD_WATCHDOG
                                int resched_cnt = 0;
#endif /* DEBUG_DPC_THREAD_WATCHDOG */
                                dhd_os_wd_timer_extend(&dhd->pub, TRUE);
                                while (dhd_bus_dpc(dhd->pub.bus)) {
                                        /* process all data */
#ifdef DEBUG_DPC_THREAD_WATCHDOG
                                        resched_cnt++;
                                        if (resched_cnt > MAX_RESCHED_CNT) {
                                                DHD_INFO(("%s Calling msleep to"
                                                        "let other processes run. \n",
                                                        __FUNCTION__));
                                                dhd->pub.dhd_bug_on = true;
                                                resched_cnt = 0;
                                                OSL_SLEEP(1);
                                        }
#endif /* DEBUG_DPC_THREAD_WATCHDOG */
                                }
                                dhd_os_wd_timer_extend(&dhd->pub, FALSE);
                                DHD_OS_WAKE_UNLOCK(&dhd->pub);
                        } else {
                                if (dhd->pub.up)
                                        dhd_bus_stop(dhd->pub.bus, TRUE);
                                DHD_OS_WAKE_UNLOCK(&dhd->pub);
                        }
                } else {
                        break;
                }
        }
        complete_and_exit(&tsk->completed, 0);
}

static int
dhd_rxf_thread(void *data)
{
        tsk_ctl_t *tsk = (tsk_ctl_t *)data;
        dhd_info_t *dhd = (dhd_info_t *)tsk->parent;
#if defined(WAIT_DEQUEUE)
#define RXF_WATCHDOG_TIME 250 /* BARK_TIME(1000) /  */
        ulong watchdogTime = OSL_SYSUPTIME(); /* msec */
#endif
        dhd_pub_t *pub = &dhd->pub;

        /* This thread doesn't need any user-level access,
         * so get rid of all our resources
         */
        if (dhd_rxf_prio > 0)
        {
                struct sched_param param;
                param.sched_priority = (dhd_rxf_prio < MAX_RT_PRIO)?dhd_rxf_prio:(MAX_RT_PRIO-1);
                setScheduler(current, SCHED_FIFO, &param);
        }

        DAEMONIZE("dhd_rxf");
        /* DHD_OS_WAKE_LOCK is called in dhd_sched_dpc[dhd_linux.c] down below  */

        /*  signal: thread has started */
        complete(&tsk->completed);
#ifdef CUSTOM_SET_CPUCORE
        dhd->pub.current_rxf = current;
#endif /* CUSTOM_SET_CPUCORE */
        /* Run until signal received */
        while (1) {
                if (down_interruptible(&tsk->sema) == 0) {
                        void *skb;
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 0)
                        ulong flags;
#endif
#ifdef ENABLE_ADAPTIVE_SCHED
                        dhd_sched_policy(dhd_rxf_prio);
#endif /* ENABLE_ADAPTIVE_SCHED */

                        SMP_RD_BARRIER_DEPENDS();

                        if (tsk->terminated) {
                                break;
                        }
                        skb = dhd_rxf_dequeue(pub);

                        if (skb == NULL) {
                                continue;
                        }
                        while (skb) {
                                void *skbnext = PKTNEXT(pub->osh, skb);
                                PKTSETNEXT(pub->osh, skb, NULL);
                                bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE,
                                        __FUNCTION__, __LINE__);
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
                                netif_rx_ni(skb);
#else
                                netif_rx(skb);
                                local_irq_save(flags);
                                RAISE_RX_SOFTIRQ();
                                local_irq_restore(flags);

#endif
                                skb = skbnext;
                        }
#if defined(WAIT_DEQUEUE)
                        if (OSL_SYSUPTIME() - watchdogTime > RXF_WATCHDOG_TIME) {
                                OSL_SLEEP(1);
                                watchdogTime = OSL_SYSUPTIME();
                        }
#endif

                        DHD_OS_WAKE_UNLOCK(pub);
                } else {
                        break;
                }
        }
        complete_and_exit(&tsk->completed, 0);
}

#ifdef BCMPCIE
void dhd_dpc_enable(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd;

        if (!dhdp || !dhdp->info)
                return;
        dhd = dhdp->info;

#ifdef DHD_LB
#ifdef DHD_LB_RXP
        __skb_queue_head_init(&dhd->rx_pend_queue);
#endif /* DHD_LB_RXP */
#ifdef DHD_LB_TXC
        if (atomic_read(&dhd->tx_compl_tasklet.count) == 1)
                tasklet_enable(&dhd->tx_compl_tasklet);
#endif /* DHD_LB_TXC */
#ifdef DHD_LB_RXC
        if (atomic_read(&dhd->rx_compl_tasklet.count) == 1)
                tasklet_enable(&dhd->rx_compl_tasklet);
#endif /* DHD_LB_RXC */
#endif /* DHD_LB */
        if (atomic_read(&dhd->tasklet.count) ==  1)
                tasklet_enable(&dhd->tasklet);
}
#endif /* BCMPCIE */


#ifdef BCMPCIE
void
dhd_dpc_kill(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd;

        if (!dhdp) {
                return;
        }

        dhd = dhdp->info;

        if (!dhd) {
                return;
        }

        if (dhd->thr_dpc_ctl.thr_pid < 0) {
                tasklet_disable(&dhd->tasklet);
                tasklet_kill(&dhd->tasklet);
                DHD_ERROR(("%s: tasklet disabled\n", __FUNCTION__));
        }
#if defined(DHD_LB)
#ifdef DHD_LB_RXP
        __skb_queue_purge(&dhd->rx_pend_queue);
#endif /* DHD_LB_RXP */
        /* Kill the Load Balancing Tasklets */
#if defined(DHD_LB_TXC)
        tasklet_disable(&dhd->tx_compl_tasklet);
        tasklet_kill(&dhd->tx_compl_tasklet);
#endif /* DHD_LB_TXC */
#if defined(DHD_LB_RXC)
        tasklet_disable(&dhd->rx_compl_tasklet);
        tasklet_kill(&dhd->rx_compl_tasklet);
#endif /* DHD_LB_RXC */
#endif /* DHD_LB */
}
#endif /* BCMPCIE */

static void
dhd_dpc(ulong data)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *)data;

        /* this (tasklet) can be scheduled in dhd_sched_dpc[dhd_linux.c]
         * down below , wake lock is set,
         * the tasklet is initialized in dhd_attach()
         */
        /* Call bus dpc unless it indicated down (then clean stop) */
        if (dhd->pub.busstate != DHD_BUS_DOWN) {
                if (dhd_bus_dpc(dhd->pub.bus)) {
                        DHD_LB_STATS_INCR(dhd->dhd_dpc_cnt);
                        tasklet_schedule(&dhd->tasklet);
                }
        } else {
                dhd_bus_stop(dhd->pub.bus, TRUE);
        }
}

void
dhd_sched_dpc(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = (dhd_info_t *)dhdp->info;

        if (dhd->thr_dpc_ctl.thr_pid >= 0) {
                DHD_OS_WAKE_LOCK(dhdp);
                /* If the semaphore does not get up,
                * wake unlock should be done here
                */
                if (!binary_sema_up(&dhd->thr_dpc_ctl)) {
                        DHD_OS_WAKE_UNLOCK(dhdp);
                }
                return;
        } else {
                tasklet_schedule(&dhd->tasklet);
        }
}

static void
dhd_sched_rxf(dhd_pub_t *dhdp, void *skb)
{
        dhd_info_t *dhd = (dhd_info_t *)dhdp->info;
#ifdef RXF_DEQUEUE_ON_BUSY
        int ret = BCME_OK;
        int retry = 2;
#endif /* RXF_DEQUEUE_ON_BUSY */

        DHD_OS_WAKE_LOCK(dhdp);

        DHD_TRACE(("dhd_sched_rxf: Enter\n"));
#ifdef RXF_DEQUEUE_ON_BUSY
        do {
                ret = dhd_rxf_enqueue(dhdp, skb);
                if (ret == BCME_OK || ret == BCME_ERROR)
                        break;
                else
                        OSL_SLEEP(50); /* waiting for dequeueing */
        } while (retry-- > 0);

        if (retry <= 0 && ret == BCME_BUSY) {
                void *skbp = skb;

                while (skbp) {
                        void *skbnext = PKTNEXT(dhdp->osh, skbp);
                        PKTSETNEXT(dhdp->osh, skbp, NULL);
                        bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE,
                                __FUNCTION__, __LINE__);
                        netif_rx_ni(skbp);
                        skbp = skbnext;
                }
                DHD_ERROR(("send skb to kernel backlog without rxf_thread\n"));
        } else {
                if (dhd->thr_rxf_ctl.thr_pid >= 0) {
                        up(&dhd->thr_rxf_ctl.sema);
                }
        }
#else /* RXF_DEQUEUE_ON_BUSY */
        do {
                if (dhd_rxf_enqueue(dhdp, skb) == BCME_OK)
                        break;
        } while (1);
        if (dhd->thr_rxf_ctl.thr_pid >= 0) {
                up(&dhd->thr_rxf_ctl.sema);
        }
        return;
#endif /* RXF_DEQUEUE_ON_BUSY */
}

#if defined(BCM_DNGL_EMBEDIMAGE) || defined(BCM_REQUEST_FW)
#endif /* defined(BCM_DNGL_EMBEDIMAGE) || defined(BCM_REQUEST_FW) */

#ifdef TOE
/* Retrieve current toe component enables, which are kept as a bitmap in toe_ol iovar */
static int
dhd_toe_get(dhd_info_t *dhd, int ifidx, uint32 *toe_ol)
{
        wl_ioctl_t ioc;
        char buf[32];
        int ret;

        memset(&ioc, 0, sizeof(ioc));

        ioc.cmd = WLC_GET_VAR;
        ioc.buf = buf;
        ioc.len = (uint)sizeof(buf);
        ioc.set = FALSE;

        strncpy(buf, "toe_ol", sizeof(buf) - 1);
        buf[sizeof(buf) - 1] = '\0';
        if ((ret = dhd_wl_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len)) < 0) {
                /* Check for older dongle image that doesn't support toe_ol */
                if (ret == -EIO) {
                        DHD_ERROR(("%s: toe not supported by device\n",
                                dhd_ifname(&dhd->pub, ifidx)));
                        return -EOPNOTSUPP;
                }

                DHD_INFO(("%s: could not get toe_ol: ret=%d\n", dhd_ifname(&dhd->pub, ifidx), ret));
                return ret;
        }

        memcpy(toe_ol, buf, sizeof(uint32));
        return 0;
}

/* Set current toe component enables in toe_ol iovar, and set toe global enable iovar */
static int
dhd_toe_set(dhd_info_t *dhd, int ifidx, uint32 toe_ol)
{
        wl_ioctl_t ioc;
        char buf[32];
        int toe, ret;

        memset(&ioc, 0, sizeof(ioc));

        ioc.cmd = WLC_SET_VAR;
        ioc.buf = buf;
        ioc.len = (uint)sizeof(buf);
        ioc.set = TRUE;

        /* Set toe_ol as requested */

        strncpy(buf, "toe_ol", sizeof(buf) - 1);
        buf[sizeof(buf) - 1] = '\0';
        memcpy(&buf[sizeof("toe_ol")], &toe_ol, sizeof(uint32));

        if ((ret = dhd_wl_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len)) < 0) {
                DHD_ERROR(("%s: could not set toe_ol: ret=%d\n",
                        dhd_ifname(&dhd->pub, ifidx), ret));
                return ret;
        }

        /* Enable toe globally only if any components are enabled. */

        toe = (toe_ol != 0);

        strcpy(buf, "toe");
        memcpy(&buf[sizeof("toe")], &toe, sizeof(uint32));

        if ((ret = dhd_wl_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len)) < 0) {
                DHD_ERROR(("%s: could not set toe: ret=%d\n", dhd_ifname(&dhd->pub, ifidx), ret));
                return ret;
        }

        return 0;
}
#endif /* TOE */

#if defined(WL_CFG80211) && defined(NUM_SCB_MAX_PROBE)
void dhd_set_scb_probe(dhd_pub_t *dhd)
{
        int ret = 0;
        wl_scb_probe_t scb_probe;
        char iovbuf[WL_EVENTING_MASK_LEN + sizeof(wl_scb_probe_t)];

        memset(&scb_probe, 0, sizeof(wl_scb_probe_t));

        if (dhd->op_mode & DHD_FLAG_HOSTAP_MODE) {
                return;
        }

        bcm_mkiovar("scb_probe", NULL, 0, iovbuf, sizeof(iovbuf));

        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, iovbuf, sizeof(iovbuf), FALSE, 0)) < 0) {
                DHD_ERROR(("%s: GET max_scb_probe failed\n", __FUNCTION__));
        }

        memcpy(&scb_probe, iovbuf, sizeof(wl_scb_probe_t));

        scb_probe.scb_max_probe = NUM_SCB_MAX_PROBE;

        bcm_mkiovar("scb_probe", (char *)&scb_probe,
                sizeof(wl_scb_probe_t), iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s: max_scb_probe setting failed\n", __FUNCTION__));
                return;
        }
}
#endif /* WL_CFG80211 && NUM_SCB_MAX_PROBE */

#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24)
static void
dhd_ethtool_get_drvinfo(struct net_device *net, struct ethtool_drvinfo *info)
{
        dhd_info_t *dhd = DHD_DEV_INFO(net);

        snprintf(info->driver, sizeof(info->driver), "wl");
        snprintf(info->version, sizeof(info->version), "%lu", dhd->pub.drv_version);
}

struct ethtool_ops dhd_ethtool_ops = {
        .get_drvinfo = dhd_ethtool_get_drvinfo
};
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) */


#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 4, 2)
static int
dhd_ethtool(dhd_info_t *dhd, void *uaddr)
{
        struct ethtool_drvinfo info;
        char drvname[sizeof(info.driver)];
        uint32 cmd;
#ifdef TOE
        struct ethtool_value edata;
        uint32 toe_cmpnt, csum_dir;
        int ret;
#endif

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        /* all ethtool calls start with a cmd word */
        if (copy_from_user(&cmd, uaddr, sizeof (uint32)))
                return -EFAULT;

        switch (cmd) {
        case ETHTOOL_GDRVINFO:
                /* Copy out any request driver name */
                if (copy_from_user(&info, uaddr, sizeof(info)))
                        return -EFAULT;
                strncpy(drvname, info.driver, sizeof(info.driver));
                drvname[sizeof(info.driver)-1] = '\0';

                /* clear struct for return */
                memset(&info, 0, sizeof(info));
                info.cmd = cmd;

                /* if dhd requested, identify ourselves */
                if (strcmp(drvname, "?dhd") == 0) {
                        snprintf(info.driver, sizeof(info.driver), "dhd");
                        strncpy(info.version, EPI_VERSION_STR, sizeof(info.version) - 1);
                        info.version[sizeof(info.version) - 1] = '\0';
                }

                /* otherwise, require dongle to be up */
                else if (!dhd->pub.up) {
                        DHD_ERROR(("%s: dongle is not up\n", __FUNCTION__));
                        return -ENODEV;
                }

                /* finally, report dongle driver type */
                else if (dhd->pub.iswl)
                        snprintf(info.driver, sizeof(info.driver), "wl");
                else
                        snprintf(info.driver, sizeof(info.driver), "xx");

                snprintf(info.version, sizeof(info.version), "%lu", dhd->pub.drv_version);
                if (copy_to_user(uaddr, &info, sizeof(info)))
                        return -EFAULT;
                DHD_CTL(("%s: given %*s, returning %s\n", __FUNCTION__,
                         (int)sizeof(drvname), drvname, info.driver));
                break;

#ifdef TOE
        /* Get toe offload components from dongle */
        case ETHTOOL_GRXCSUM:
        case ETHTOOL_GTXCSUM:
                if ((ret = dhd_toe_get(dhd, 0, &toe_cmpnt)) < 0)
                        return ret;

                csum_dir = (cmd == ETHTOOL_GTXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;

                edata.cmd = cmd;
                edata.data = (toe_cmpnt & csum_dir) ? 1 : 0;

                if (copy_to_user(uaddr, &edata, sizeof(edata)))
                        return -EFAULT;
                break;

        /* Set toe offload components in dongle */
        case ETHTOOL_SRXCSUM:
        case ETHTOOL_STXCSUM:
                if (copy_from_user(&edata, uaddr, sizeof(edata)))
                        return -EFAULT;

                /* Read the current settings, update and write back */
                if ((ret = dhd_toe_get(dhd, 0, &toe_cmpnt)) < 0)
                        return ret;

                csum_dir = (cmd == ETHTOOL_STXCSUM) ? TOE_TX_CSUM_OL : TOE_RX_CSUM_OL;

                if (edata.data != 0)
                        toe_cmpnt |= csum_dir;
                else
                        toe_cmpnt &= ~csum_dir;

                if ((ret = dhd_toe_set(dhd, 0, toe_cmpnt)) < 0)
                        return ret;

                /* If setting TX checksum mode, tell Linux the new mode */
                if (cmd == ETHTOOL_STXCSUM) {
                        if (edata.data)
                                dhd->iflist[0]->net->features |= NETIF_F_IP_CSUM;
                        else
                                dhd->iflist[0]->net->features &= ~NETIF_F_IP_CSUM;
                }

                break;
#endif /* TOE */

        default:
                return -EOPNOTSUPP;
        }

        return 0;
}
#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 4, 2) */

static bool dhd_check_hang(struct net_device *net, dhd_pub_t *dhdp, int error)
{
        dhd_info_t *dhd;

        if (!dhdp) {
                DHD_ERROR(("%s: dhdp is NULL\n", __FUNCTION__));
                return FALSE;
        }

        if (!dhdp->up)
                return FALSE;

        dhd = (dhd_info_t *)dhdp->info;
#if !defined(BCMPCIE)
        if (dhd->thr_dpc_ctl.thr_pid < 0) {
                DHD_ERROR(("%s : skipped due to negative pid - unloading?\n", __FUNCTION__));
                return FALSE;
        }
#endif 

        if ((error == -ETIMEDOUT) || (error == -EREMOTEIO) ||
                ((dhdp->busstate == DHD_BUS_DOWN) && (!dhdp->dongle_reset))) {
#ifdef BCMPCIE
                DHD_ERROR(("%s: Event HANG send up due to  re=%d te=%d d3acke=%d e=%d s=%d\n",
                        __FUNCTION__, dhdp->rxcnt_timeout, dhdp->txcnt_timeout,
                        dhdp->d3ackcnt_timeout, error, dhdp->busstate));
#else
                DHD_ERROR(("%s: Event HANG send up due to  re=%d te=%d e=%d s=%d\n", __FUNCTION__,
                        dhdp->rxcnt_timeout, dhdp->txcnt_timeout, error, dhdp->busstate));
#endif /* BCMPCIE */
                if (dhdp->hang_reason == 0) {
                        if (dhdp->dongle_trap_occured) {
                                dhdp->hang_reason = HANG_REASON_DONGLE_TRAP;
#ifdef BCMPCIE
                        } else if (dhdp->d3ackcnt_timeout) {
                                dhdp->hang_reason = HANG_REASON_D3_ACK_TIMEOUT;
#endif /* BCMPCIE */
                        } else {
                                dhdp->hang_reason = HANG_REASON_IOCTL_RESP_TIMEOUT;
                        }
                }
                net_os_send_hang_message(net);
                return TRUE;
        }
        return FALSE;
}

int dhd_ioctl_process(dhd_pub_t *pub, int ifidx, dhd_ioctl_t *ioc, void *data_buf)
{
        int bcmerror = BCME_OK;
        int buflen = 0;
        struct net_device *net;

        net = dhd_idx2net(pub, ifidx);
        if (!net) {
                bcmerror = BCME_BADARG;
                goto done;
        }

        if (data_buf)
                buflen = MIN(ioc->len, DHD_IOCTL_MAXLEN);

        /* check for local dhd ioctl and handle it */
        if (ioc->driver == DHD_IOCTL_MAGIC) {
                bcmerror = dhd_ioctl((void *)pub, ioc, data_buf, buflen);
                if (bcmerror)
                        pub->bcmerror = bcmerror;
                goto done;
        }

        /* send to dongle (must be up, and wl). */
        if (pub->busstate == DHD_BUS_DOWN || pub->busstate == DHD_BUS_LOAD) {
                if (allow_delay_fwdl) {
                        int ret = dhd_bus_start(pub);
                        if (ret != 0) {
                                DHD_ERROR(("%s: failed with code %d\n", __FUNCTION__, ret));
                                bcmerror = BCME_DONGLE_DOWN;
                                goto done;
                        }
                } else {
                        bcmerror = BCME_DONGLE_DOWN;
                        goto done;
                }
        }

        if (!pub->iswl) {
                bcmerror = BCME_DONGLE_DOWN;
                goto done;
        }

        /*
         * Flush the TX queue if required for proper message serialization:
         * Intercept WLC_SET_KEY IOCTL - serialize M4 send and set key IOCTL to
         * prevent M4 encryption and
         * intercept WLC_DISASSOC IOCTL - serialize WPS-DONE and WLC_DISASSOC IOCTL to
         * prevent disassoc frame being sent before WPS-DONE frame.
         */
        if (ioc->cmd == WLC_SET_KEY ||
            (ioc->cmd == WLC_SET_VAR && data_buf != NULL &&
             strncmp("wsec_key", data_buf, 9) == 0) ||
            (ioc->cmd == WLC_SET_VAR && data_buf != NULL &&
             strncmp("bsscfg:wsec_key", data_buf, 15) == 0) ||
            ioc->cmd == WLC_DISASSOC)
                dhd_wait_pend8021x(net);

#ifdef WLMEDIA_HTSF
        if (data_buf) {
                /*  short cut wl ioctl calls here  */
                if (strcmp("htsf", data_buf) == 0) {
                        dhd_ioctl_htsf_get(dhd, 0);
                        return BCME_OK;
                }

                if (strcmp("htsflate", data_buf) == 0) {
                        if (ioc->set) {
                                memset(ts, 0, sizeof(tstamp_t)*TSMAX);
                                memset(&maxdelayts, 0, sizeof(tstamp_t));
                                maxdelay = 0;
                                tspktcnt = 0;
                                maxdelaypktno = 0;
                                memset(&vi_d1.bin, 0, sizeof(uint32)*NUMBIN);
                                memset(&vi_d2.bin, 0, sizeof(uint32)*NUMBIN);
                                memset(&vi_d3.bin, 0, sizeof(uint32)*NUMBIN);
                                memset(&vi_d4.bin, 0, sizeof(uint32)*NUMBIN);
                        } else {
                                dhd_dump_latency();
                        }
                        return BCME_OK;
                }
                if (strcmp("htsfclear", data_buf) == 0) {
                        memset(&vi_d1.bin, 0, sizeof(uint32)*NUMBIN);
                        memset(&vi_d2.bin, 0, sizeof(uint32)*NUMBIN);
                        memset(&vi_d3.bin, 0, sizeof(uint32)*NUMBIN);
                        memset(&vi_d4.bin, 0, sizeof(uint32)*NUMBIN);
                        htsf_seqnum = 0;
                        return BCME_OK;
                }
                if (strcmp("htsfhis", data_buf) == 0) {
                        dhd_dump_htsfhisto(&vi_d1, "H to D");
                        dhd_dump_htsfhisto(&vi_d2, "D to D");
                        dhd_dump_htsfhisto(&vi_d3, "D to H");
                        dhd_dump_htsfhisto(&vi_d4, "H to H");
                        return BCME_OK;
                }
                if (strcmp("tsport", data_buf) == 0) {
                        if (ioc->set) {
                                memcpy(&tsport, data_buf + 7, 4);
                        } else {
                                DHD_ERROR(("current timestamp port: %d \n", tsport));
                        }
                        return BCME_OK;
                }
        }
#endif /* WLMEDIA_HTSF */

        if ((ioc->cmd == WLC_SET_VAR || ioc->cmd == WLC_GET_VAR) &&
                data_buf != NULL && strncmp("rpc_", data_buf, 4) == 0) {
#ifdef BCM_FD_AGGR
                bcmerror = dhd_fdaggr_ioctl(pub, ifidx, (wl_ioctl_t *)ioc, data_buf, buflen);
#else
                bcmerror = BCME_UNSUPPORTED;
#endif
                goto done;
        }

#ifdef DHD_DEBUG
        if (ioc->cmd != WLC_GET_MAGIC && ioc->cmd != WLC_GET_VERSION) {
                if (ioc->cmd == WLC_SET_VAR || ioc->cmd == WLC_GET_VAR) {
                        /* Print  IOVAR Information */
                        DHD_IOV_INFO(("%s: IOVAR_INFO name = %s set = %d\n",
                                __FUNCTION__, (char *)data_buf, ioc->set));
                        if ((dhd_msg_level & DHD_IOV_INFO_VAL) && ioc->set && data_buf) {
                                prhex(NULL, data_buf + strlen(data_buf) + 1,
                                        buflen - strlen(data_buf) - 1);
                        }
                } else {
                        /* Print  IOCTL Information */
                        DHD_IOV_INFO(("%s: IOCTL_INFO cmd = %d set = %d\n",
                                __FUNCTION__, ioc->cmd, ioc->set));
                        if ((dhd_msg_level & DHD_IOV_INFO_VAL) && ioc->set && data_buf) {
                                prhex(NULL, data_buf, buflen);
                        }
                }
        }
#endif /* DHD_DEBUG */

        bcmerror = dhd_wl_ioctl(pub, ifidx, (wl_ioctl_t *)ioc, data_buf, buflen);

done:
        dhd_check_hang(net, pub, bcmerror);

        return bcmerror;
}

static int
dhd_ioctl_entry(struct net_device *net, struct ifreq *ifr, int cmd)
{
        dhd_info_t *dhd = DHD_DEV_INFO(net);
        dhd_ioctl_t ioc;
        int ifidx;
        int ret;
        void *local_buf = NULL;
        u16 buflen = 0;

        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK(&dhd->pub);

        /* Interface up check for built-in type */
        if (!dhd_download_fw_on_driverload && dhd->pub.up == FALSE) {
                DHD_ERROR(("%s: Interface is down \n", __FUNCTION__));
                ret = BCME_NOTUP;
                goto exit;
        }

        /* send to dongle only if we are not waiting for reload already */
        if (dhd->pub.hang_was_sent) {
                DHD_ERROR(("%s: HANG was sent up earlier\n", __FUNCTION__));
                DHD_OS_WAKE_LOCK_CTRL_TIMEOUT_ENABLE(&dhd->pub, DHD_EVENT_TIMEOUT_MS);
                ret = BCME_DONGLE_DOWN;
                goto exit;
        }

        ifidx = dhd_net2idx(dhd, net);
        DHD_TRACE(("%s: ifidx %d, cmd 0x%04x\n", __FUNCTION__, ifidx, cmd));

        if (ifidx == DHD_BAD_IF) {
                DHD_ERROR(("%s: BAD IF\n", __FUNCTION__));
                ret = -1;
                goto exit;
        }

#if defined(WL_WIRELESS_EXT)
        /* linux wireless extensions */
        if ((cmd >= SIOCIWFIRST) && (cmd <= SIOCIWLAST)) {
                /* may recurse, do NOT lock */
                ret = wl_iw_ioctl(net, ifr, cmd);
                goto exit;
        }
#endif /* defined(WL_WIRELESS_EXT) */

#if LINUX_VERSION_CODE > KERNEL_VERSION(2, 4, 2)
        if (cmd == SIOCETHTOOL) {
                ret = dhd_ethtool(dhd, (void*)ifr->ifr_data);
                goto exit;
        }
#endif /* LINUX_VERSION_CODE > KERNEL_VERSION(2, 4, 2) */

        if (cmd == SIOCDEVPRIVATE+1) {
                ret = wl_android_priv_cmd(net, ifr, cmd);
                dhd_check_hang(net, &dhd->pub, ret);
                goto exit;
        }

        if (cmd != SIOCDEVPRIVATE) {
                ret = -EOPNOTSUPP;
                goto exit;
        }

        memset(&ioc, 0, sizeof(ioc));

#ifdef CONFIG_COMPAT
        if (is_compat_task()) {
                compat_wl_ioctl_t compat_ioc;
                if (copy_from_user(&compat_ioc, ifr->ifr_data, sizeof(compat_wl_ioctl_t))) {
                        ret = BCME_BADADDR;
                        goto done;
                }
                ioc.cmd = compat_ioc.cmd;
                ioc.buf = compat_ptr(compat_ioc.buf);
                ioc.len = compat_ioc.len;
                ioc.set = compat_ioc.set;
                ioc.used = compat_ioc.used;
                ioc.needed = compat_ioc.needed;
                /* To differentiate between wl and dhd read 4 more byes */
                if ((copy_from_user(&ioc.driver, (char *)ifr->ifr_data + sizeof(compat_wl_ioctl_t),
                        sizeof(uint)) != 0)) {
                        ret = BCME_BADADDR;
                        goto done;
                }
        } else
#endif /* CONFIG_COMPAT */
        {
                /* Copy the ioc control structure part of ioctl request */
                if (copy_from_user(&ioc, ifr->ifr_data, sizeof(wl_ioctl_t))) {
                        ret = BCME_BADADDR;
                        goto done;
                }

                /* To differentiate between wl and dhd read 4 more byes */
                if ((copy_from_user(&ioc.driver, (char *)ifr->ifr_data + sizeof(wl_ioctl_t),
                        sizeof(uint)) != 0)) {
                        ret = BCME_BADADDR;
                        goto done;
                }
        }

        if (!capable(CAP_NET_ADMIN)) {
                ret = BCME_EPERM;
                goto done;
        }

        if (ioc.len > 0) {
                buflen = MIN(ioc.len, DHD_IOCTL_MAXLEN);
                if (!(local_buf = MALLOC(dhd->pub.osh, buflen+1))) {
                        ret = BCME_NOMEM;
                        goto done;
                }

                DHD_PERIM_UNLOCK(&dhd->pub);
                if (copy_from_user(local_buf, ioc.buf, buflen)) {
                        DHD_PERIM_LOCK(&dhd->pub);
                        ret = BCME_BADADDR;
                        goto done;
                }
                DHD_PERIM_LOCK(&dhd->pub);

                *(char *)(local_buf + buflen) = '\0';
        }

        ret = dhd_ioctl_process(&dhd->pub, ifidx, &ioc, local_buf);

        if (!ret && buflen && local_buf && ioc.buf) {
                DHD_PERIM_UNLOCK(&dhd->pub);
                if (copy_to_user(ioc.buf, local_buf, buflen))
                        ret = -EFAULT;
                DHD_PERIM_LOCK(&dhd->pub);
        }

done:
        if (local_buf)
                MFREE(dhd->pub.osh, local_buf, buflen+1);

exit:
        DHD_PERIM_UNLOCK(&dhd->pub);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);

        return OSL_ERROR(ret);
}


#ifdef FIX_CPU_MIN_CLOCK
static int dhd_init_cpufreq_fix(dhd_info_t *dhd)
{
        if (dhd) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
                mutex_init(&dhd->cpufreq_fix);
#endif
                dhd->cpufreq_fix_status = FALSE;
        }
        return 0;
}

static void dhd_fix_cpu_freq(dhd_info_t *dhd)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        mutex_lock(&dhd->cpufreq_fix);
#endif
        if (dhd && !dhd->cpufreq_fix_status) {
                pm_qos_add_request(&dhd->dhd_cpu_qos, PM_QOS_CPU_FREQ_MIN, 300000);
#ifdef FIX_BUS_MIN_CLOCK
                pm_qos_add_request(&dhd->dhd_bus_qos, PM_QOS_BUS_THROUGHPUT, 400000);
#endif /* FIX_BUS_MIN_CLOCK */
                DHD_ERROR(("pm_qos_add_requests called\n"));

                dhd->cpufreq_fix_status = TRUE;
        }
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        mutex_unlock(&dhd->cpufreq_fix);
#endif
}

static void dhd_rollback_cpu_freq(dhd_info_t *dhd)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        mutex_lock(&dhd ->cpufreq_fix);
#endif
        if (dhd && dhd->cpufreq_fix_status != TRUE) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
                mutex_unlock(&dhd->cpufreq_fix);
#endif
                return;
        }

        pm_qos_remove_request(&dhd->dhd_cpu_qos);
#ifdef FIX_BUS_MIN_CLOCK
        pm_qos_remove_request(&dhd->dhd_bus_qos);
#endif /* FIX_BUS_MIN_CLOCK */
        DHD_ERROR(("pm_qos_add_requests called\n"));

        dhd->cpufreq_fix_status = FALSE;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        mutex_unlock(&dhd->cpufreq_fix);
#endif
}
#endif /* FIX_CPU_MIN_CLOCK */

#define MAX_TRY_CNT             5 /* Number of tries to disable deepsleep */
int dhd_deepsleep(dhd_info_t *dhd, int flag)
{
        char iovbuf[20];
        uint powervar = 0;
        dhd_pub_t *dhdp;
        int cnt = 0;
        int ret = 0;

        dhdp = &dhd->pub;

        switch (flag) {
                case 1 :  /* Deepsleep on */
                        DHD_ERROR(("dhd_deepsleep: ON\n"));
                        /* give some time to sysioc_work before deepsleep */
                        OSL_SLEEP(200);
#ifdef PKT_FILTER_SUPPORT
                        /* disable pkt filter */
                        dhd_enable_packet_filter(0, dhdp);
#endif /* PKT_FILTER_SUPPORT */
                        /* Disable MPC */
                        powervar = 0;
                        memset(iovbuf, 0, sizeof(iovbuf));
                        bcm_mkiovar("mpc", (char *)&powervar, 4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);

                        /* Enable Deepsleep */
                        powervar = 1;
                        memset(iovbuf, 0, sizeof(iovbuf));
                        bcm_mkiovar("deepsleep", (char *)&powervar, 4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
                        break;

                case 0: /* Deepsleep Off */
                        DHD_ERROR(("dhd_deepsleep: OFF\n"));

                        /* Disable Deepsleep */
                        for (cnt = 0; cnt < MAX_TRY_CNT; cnt++) {
                                powervar = 0;
                                memset(iovbuf, 0, sizeof(iovbuf));
                                bcm_mkiovar("deepsleep", (char *)&powervar, 4,
                                        iovbuf, sizeof(iovbuf));
                                dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR, iovbuf,
                                        sizeof(iovbuf), TRUE, 0);

                                memset(iovbuf, 0, sizeof(iovbuf));
                                bcm_mkiovar("deepsleep", (char *)&powervar, 4,
                                        iovbuf, sizeof(iovbuf));
                                if ((ret = dhd_wl_ioctl_cmd(dhdp, WLC_GET_VAR, iovbuf,
                                        sizeof(iovbuf), FALSE, 0)) < 0) {
                                        DHD_ERROR(("the error of dhd deepsleep status"
                                                " ret value :%d\n", ret));
                                } else {
                                        if (!(*(int *)iovbuf)) {
                                                DHD_ERROR(("deepsleep mode is 0,"
                                                        " count: %d\n", cnt));
                                                break;
                                        }
                                }
                        }

                        /* Enable MPC */
                        powervar = 1;
                        memset(iovbuf, 0, sizeof(iovbuf));
                        bcm_mkiovar("mpc", (char *)&powervar, 4, iovbuf, sizeof(iovbuf));
                        dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
                        break;
        }

        return 0;
}

static int
dhd_stop(struct net_device *net)
{
        int ifidx = 0;
        dhd_info_t *dhd = DHD_DEV_INFO(net);
        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK(&dhd->pub);
        printf("%s: Enter %p\n", __FUNCTION__, net);
        dhd->pub.rxcnt_timeout = 0;
        dhd->pub.txcnt_timeout = 0;

#ifdef BCMPCIE
        dhd->pub.d3ackcnt_timeout = 0;
#endif /* BCMPCIE */

        if (dhd->pub.up == 0) {
                goto exit;
        }

        dhd_if_flush_sta(DHD_DEV_IFP(net));

        /* Disable Runtime PM before interface down */
        DHD_DISABLE_RUNTIME_PM(&dhd->pub);

#ifdef FIX_CPU_MIN_CLOCK
        if (dhd_get_fw_mode(dhd) == DHD_FLAG_HOSTAP_MODE)
                dhd_rollback_cpu_freq(dhd);
#endif /* FIX_CPU_MIN_CLOCK */

        ifidx = dhd_net2idx(dhd, net);
        BCM_REFERENCE(ifidx);

        /* Set state and stop OS transmissions */
        netif_stop_queue(net);
        dhd->pub.up = 0;

#ifdef WL_CFG80211
        if (ifidx == 0) {
                dhd_if_t *ifp;
                wl_cfg80211_down(NULL);

                ifp = dhd->iflist[0];
                ASSERT(ifp && ifp->net);
                /*
                 * For CFG80211: Clean up all the left over virtual interfaces
                 * when the primary Interface is brought down. [ifconfig wlan0 down]
                 */
                if (!dhd_download_fw_on_driverload) {
                        if ((dhd->dhd_state & DHD_ATTACH_STATE_ADD_IF) &&
                                (dhd->dhd_state & DHD_ATTACH_STATE_CFG80211)) {
                                int i;

#ifdef WL_CFG80211_P2P_DEV_IF
                                wl_cfg80211_del_p2p_wdev();
#endif /* WL_CFG80211_P2P_DEV_IF */

                                dhd_net_if_lock_local(dhd);
                                for (i = 1; i < DHD_MAX_IFS; i++)
                                        dhd_remove_if(&dhd->pub, i, FALSE);

                                if (ifp && ifp->net) {
                                        dhd_if_del_sta_list(ifp);
                                }

#ifdef ARP_OFFLOAD_SUPPORT
                                if (dhd_inetaddr_notifier_registered) {
                                        dhd_inetaddr_notifier_registered = FALSE;
                                        unregister_inetaddr_notifier(&dhd_inetaddr_notifier);
                                }
#endif /* ARP_OFFLOAD_SUPPORT */
#if defined(CONFIG_IPV6) && defined(IPV6_NDO_SUPPORT)
                                if (dhd_inet6addr_notifier_registered) {
                                        dhd_inet6addr_notifier_registered = FALSE;
                                        unregister_inet6addr_notifier(&dhd_inet6addr_notifier);
                                }
#endif /* CONFIG_IPV6 && IPV6_NDO_SUPPORT */
                                dhd_net_if_unlock_local(dhd);
                        }
                        cancel_work_sync(dhd->dhd_deferred_wq);
#if defined(DHD_LB) && defined(DHD_LB_RXP)
                        __skb_queue_purge(&dhd->rx_pend_queue);
#endif /* DHD_LB && DHD_LB_RXP */
                }

#if defined(BCMPCIE) && defined(DHDTCPACK_SUPPRESS)
                dhd_tcpack_suppress_set(&dhd->pub, TCPACK_SUP_OFF);
#endif /* BCMPCIE && DHDTCPACK_SUPPRESS */
#if defined(DHD_LB) && defined(DHD_LB_RXP)
                if (ifp->net == dhd->rx_napi_netdev) {
                        DHD_INFO(("%s napi<%p> disabled ifp->net<%p,%s>\n",
                                __FUNCTION__, &dhd->rx_napi_struct, net, net->name));
                        skb_queue_purge(&dhd->rx_napi_queue);
                        napi_disable(&dhd->rx_napi_struct);
                        netif_napi_del(&dhd->rx_napi_struct);
                        dhd->rx_napi_netdev = NULL;
                }
#endif /* DHD_LB && DHD_LB_RXP */

        }
#endif /* WL_CFG80211 */

#ifdef PROP_TXSTATUS
        dhd_wlfc_cleanup(&dhd->pub, NULL, 0);
#endif
        /* Stop the protocol module */
        dhd_prot_stop(&dhd->pub);

        OLD_MOD_DEC_USE_COUNT;
exit:
        if (ifidx == 0 && !dhd_download_fw_on_driverload)
                wl_android_wifi_off(net, TRUE);
        else {
                if (dhd->pub.conf->deepsleep)
                        dhd_deepsleep(dhd, 1);
        }
        dhd->pub.hang_was_sent = 0;

        /* Clear country spec for for built-in type driver */
        if (!dhd_download_fw_on_driverload) {
                dhd->pub.dhd_cspec.country_abbrev[0] = 0x00;
                dhd->pub.dhd_cspec.rev = 0;
                dhd->pub.dhd_cspec.ccode[0] = 0x00;
        }

#ifdef BCMDBGFS
        dhd_dbg_remove();
#endif

        DHD_PERIM_UNLOCK(&dhd->pub);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);

        /* Destroy wakelock */
        if (!dhd_download_fw_on_driverload &&
                (dhd->dhd_state & DHD_ATTACH_STATE_WAKELOCKS_INIT)) {
                DHD_OS_WAKE_LOCK_DESTROY(dhd);
                dhd->dhd_state &= ~DHD_ATTACH_STATE_WAKELOCKS_INIT;
        }
        printf("%s: Exit\n", __FUNCTION__);

        return 0;
}

#if defined(WL_CFG80211) && defined(USE_INITIAL_SHORT_DWELL_TIME)
extern bool g_first_broadcast_scan;
#endif 

#ifdef WL11U
static int dhd_interworking_enable(dhd_pub_t *dhd)
{
        char iovbuf[WLC_IOCTL_SMLEN];
        uint32 enable = true;
        int ret = BCME_OK;

        bcm_mkiovar("interworking", (char *)&enable, sizeof(enable), iovbuf, sizeof(iovbuf));
        ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
        if (ret < 0) {
                DHD_ERROR(("%s: enableing interworking failed, ret=%d\n", __FUNCTION__, ret));
        }

        if (ret == BCME_OK) {
                /* basic capabilities for HS20 REL2 */
                uint32 cap = WL_WNM_BSSTRANS | WL_WNM_NOTIF;
                bcm_mkiovar("wnm", (char *)&cap, sizeof(cap), iovbuf, sizeof(iovbuf));
                ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
                if (ret < 0) {
                        DHD_ERROR(("%s: set wnm returned (%d)\n", __FUNCTION__, ret));
                }
        }

        return ret;
}
#endif /* WL11u */

static int
dhd_open(struct net_device *net)
{
        dhd_info_t *dhd = DHD_DEV_INFO(net);
#ifdef TOE
        uint32 toe_ol;
#endif
#ifdef BCM_FD_AGGR
        char iovbuf[WLC_IOCTL_SMLEN];
        dbus_config_t config;
        uint32 agglimit = 0;
        uint32 rpc_agg = BCM_RPC_TP_DNGL_AGG_DPC; /* host aggr not enabled yet */
#endif /* BCM_FD_AGGR */
        int ifidx;
        int32 ret = 0;

        if (!dhd_download_fw_on_driverload && !dhd_driver_init_done) {
                DHD_ERROR(("%s: WLAN driver is not initialized\n", __FUNCTION__));
                return -1;
        }

        printf("%s: Enter %p\n", __FUNCTION__, net);
#if defined(MULTIPLE_SUPPLICANT)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25)) && 1
        if (mutex_is_locked(&_dhd_sdio_mutex_lock_) != 0) {
                DHD_ERROR(("%s : dhd_open: call dev open before insmod complete!\n", __FUNCTION__));
        }
        mutex_lock(&_dhd_sdio_mutex_lock_);
#endif
#endif /* MULTIPLE_SUPPLICANT */
        /* Init wakelock */
        if (!dhd_download_fw_on_driverload &&
                !(dhd->dhd_state & DHD_ATTACH_STATE_WAKELOCKS_INIT)) {
                DHD_OS_WAKE_LOCK_INIT(dhd);
                dhd->dhd_state |= DHD_ATTACH_STATE_WAKELOCKS_INIT;
        }

#ifdef PREVENT_REOPEN_DURING_HANG
        /* WAR : to prevent calling dhd_open abnormally in quick succession after hang event */
        if (dhd->pub.hang_was_sent == 1) {
                DHD_ERROR(("%s: HANG was sent up earlier\n", __FUNCTION__));
                /* Force to bring down WLAN interface in case dhd_stop() is not called
                 * from the upper layer when HANG event is triggered.
                 */
                if (!dhd_download_fw_on_driverload && dhd->pub.up == 1) {
                        DHD_ERROR(("%s: WLAN interface is not brought down\n", __FUNCTION__));
                        dhd_stop(net);
                } else {
                        return -1;
                }
        }
#endif /* PREVENT_REOPEN_DURING_HANG */


        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK(&dhd->pub);
        dhd->pub.dongle_trap_occured = 0;
        dhd->pub.hang_was_sent = 0;
        dhd->pub.hang_reason = 0;
#ifdef DHD_LOSSLESS_ROAMING
        dhd->pub.dequeue_prec_map = ALLPRIO;
#endif
#if 0
        /*
         * Force start if ifconfig_up gets called before START command
         *  We keep WEXT's wl_control_wl_start to provide backward compatibility
         *  This should be removed in the future
         */
        ret = wl_control_wl_start(net);
        if (ret != 0) {
                DHD_ERROR(("%s: failed with code %d\n", __FUNCTION__, ret));
                ret = -1;
                goto exit;
        }
#endif

        ifidx = dhd_net2idx(dhd, net);
        DHD_TRACE(("%s: ifidx %d\n", __FUNCTION__, ifidx));

        if (ifidx < 0) {
                DHD_ERROR(("%s: Error: called with invalid IF\n", __FUNCTION__));
                ret = -1;
                goto exit;
        }

        if (!dhd->iflist[ifidx]) {
                DHD_ERROR(("%s: Error: called when IF already deleted\n", __FUNCTION__));
                ret = -1;
                goto exit;
        }

        if (ifidx == 0) {
                atomic_set(&dhd->pend_8021x_cnt, 0);
                if (!dhd_download_fw_on_driverload) {
                        DHD_ERROR(("\n%s\n", dhd_version));
#if defined(USE_INITIAL_SHORT_DWELL_TIME)
                        g_first_broadcast_scan = TRUE;
#endif 
                        ret = wl_android_wifi_on(net);
                        if (ret != 0) {
                                DHD_ERROR(("%s : wl_android_wifi_on failed (%d)\n",
                                        __FUNCTION__, ret));
                                ret = -1;
                                goto exit;
                        }
                }
#ifdef FIX_CPU_MIN_CLOCK
                if (dhd_get_fw_mode(dhd) == DHD_FLAG_HOSTAP_MODE) {
                        dhd_init_cpufreq_fix(dhd);
                        dhd_fix_cpu_freq(dhd);
                }
#endif /* FIX_CPU_MIN_CLOCK */

                if (dhd->pub.busstate != DHD_BUS_DATA) {

                        /* try to bring up bus */
                        DHD_PERIM_UNLOCK(&dhd->pub);
                        ret = dhd_bus_start(&dhd->pub);
                        DHD_PERIM_LOCK(&dhd->pub);
                        if (ret) {
                                DHD_ERROR(("%s: failed with code %d\n", __FUNCTION__, ret));
                                ret = -1;
                                goto exit;
                        }

                }
                if (dhd_download_fw_on_driverload) {
                        if (dhd->pub.conf->deepsleep)
                                dhd_deepsleep(dhd, 0);
                }

#ifdef BCM_FD_AGGR
                config.config_id = DBUS_CONFIG_ID_AGGR_LIMIT;


                memset(iovbuf, 0, sizeof(iovbuf));
                bcm_mkiovar("rpc_dngl_agglimit", (char *)&agglimit, 4,
                        iovbuf, sizeof(iovbuf));

                if (!dhd_wl_ioctl_cmd(&dhd->pub, WLC_GET_VAR, iovbuf, sizeof(iovbuf), FALSE, 0)) {
                        agglimit = *(uint32 *)iovbuf;
                        config.aggr_param.maxrxsf = agglimit >> BCM_RPC_TP_AGG_SF_SHIFT;
                        config.aggr_param.maxrxsize = agglimit & BCM_RPC_TP_AGG_BYTES_MASK;
                        DHD_ERROR(("rpc_dngl_agglimit %x : sf_limit %d bytes_limit %d\n",
                                agglimit, config.aggr_param.maxrxsf, config.aggr_param.maxrxsize));
                        if (bcm_rpc_tp_set_config(dhd->pub.info->rpc_th, &config)) {
                                DHD_ERROR(("set tx/rx queue size and buffersize failed\n"));
                        }
                } else {
                        DHD_ERROR(("get rpc_dngl_agglimit failed\n"));
                        rpc_agg &= ~BCM_RPC_TP_DNGL_AGG_DPC;
                }

                /* Set aggregation for TX */
                bcm_rpc_tp_agg_set(dhd->pub.info->rpc_th, BCM_RPC_TP_HOST_AGG_MASK,
                        rpc_agg & BCM_RPC_TP_HOST_AGG_MASK);

                /* Set aggregation for RX */
                memset(iovbuf, 0, sizeof(iovbuf));
                bcm_mkiovar("rpc_agg", (char *)&rpc_agg, sizeof(rpc_agg), iovbuf, sizeof(iovbuf));
                if (!dhd_wl_ioctl_cmd(&dhd->pub, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) {
                        dhd->pub.info->fdaggr = 0;
                        if (rpc_agg & BCM_RPC_TP_HOST_AGG_MASK)
                                dhd->pub.info->fdaggr |= BCM_FDAGGR_H2D_ENABLED;
                        if (rpc_agg & BCM_RPC_TP_DNGL_AGG_MASK)
                                dhd->pub.info->fdaggr |= BCM_FDAGGR_D2H_ENABLED;
                } else {
                        DHD_ERROR(("%s(): Setting RX aggregation failed %d\n", __FUNCTION__, ret));
                }
#endif /* BCM_FD_AGGR */

                /* dhd_sync_with_dongle has been called in dhd_bus_start or wl_android_wifi_on */
                memcpy(net->dev_addr, dhd->pub.mac.octet, ETHER_ADDR_LEN);

#ifdef TOE
                /* Get current TOE mode from dongle */
                if (dhd_toe_get(dhd, ifidx, &toe_ol) >= 0 && (toe_ol & TOE_TX_CSUM_OL) != 0) {
                        dhd->iflist[ifidx]->net->features |= NETIF_F_IP_CSUM;
                } else {
                        dhd->iflist[ifidx]->net->features &= ~NETIF_F_IP_CSUM;
                }
#endif /* TOE */

#if defined(WL_CFG80211)
                if (unlikely(wl_cfg80211_up(NULL))) {
                        DHD_ERROR(("%s: failed to bring up cfg80211\n", __FUNCTION__));
                        ret = -1;
                        goto exit;
                }
                if (!dhd_download_fw_on_driverload) {
#ifdef ARP_OFFLOAD_SUPPORT
                        dhd->pend_ipaddr = 0;
                        if (!dhd_inetaddr_notifier_registered) {
                                dhd_inetaddr_notifier_registered = TRUE;
                                register_inetaddr_notifier(&dhd_inetaddr_notifier);
                        }
#endif /* ARP_OFFLOAD_SUPPORT */
#if defined(CONFIG_IPV6) && defined(IPV6_NDO_SUPPORT)
                        if (!dhd_inet6addr_notifier_registered) {
                                dhd_inet6addr_notifier_registered = TRUE;
                                register_inet6addr_notifier(&dhd_inet6addr_notifier);
                        }
#endif /* CONFIG_IPV6 && IPV6_NDO_SUPPORT */
#ifdef DHD_LB
                        DHD_LB_STATS_INIT(&dhd->pub);
#ifdef DHD_LB_RXP
                        __skb_queue_head_init(&dhd->rx_pend_queue);
#endif /* DHD_LB_RXP */
#endif /* DHD_LB */
                }

#if defined(BCMPCIE) && defined(DHDTCPACK_SUPPRESS)
#if defined(SET_RPS_CPUS)
                dhd_tcpack_suppress_set(&dhd->pub, TCPACK_SUP_OFF);
#else
                dhd_tcpack_suppress_set(&dhd->pub, TCPACK_SUP_HOLD);
#endif 
#endif /* BCMPCIE && DHDTCPACK_SUPPRESS */
#if defined(DHD_LB) && defined(DHD_LB_RXP)
                if (dhd->rx_napi_netdev == NULL) {
                        dhd->rx_napi_netdev = dhd->iflist[ifidx]->net;
                        memset(&dhd->rx_napi_struct, 0, sizeof(struct napi_struct));
                        netif_napi_add(dhd->rx_napi_netdev, &dhd->rx_napi_struct,
                                        dhd_napi_poll, dhd_napi_weight);
                        DHD_INFO(("%s napi<%p> enabled ifp->net<%p,%s>\n",
                                        __FUNCTION__, &dhd->rx_napi_struct, net, net->name));
                        napi_enable(&dhd->rx_napi_struct);
                        DHD_INFO(("%s load balance init rx_napi_struct\n", __FUNCTION__));
                        skb_queue_head_init(&dhd->rx_napi_queue);
                }
#endif /* DHD_LB && DHD_LB_RXP */
#if defined(NUM_SCB_MAX_PROBE)
                dhd_set_scb_probe(&dhd->pub);
#endif /* NUM_SCB_MAX_PROBE */
#endif /* WL_CFG80211 */
        }

        /* Allow transmit calls */
        netif_start_queue(net);
        dhd->pub.up = 1;

        OLD_MOD_INC_USE_COUNT;

#ifdef BCMDBGFS
        dhd_dbg_init(&dhd->pub);
#endif

exit:
        if (ret) {
                dhd_stop(net);
        }

        DHD_PERIM_UNLOCK(&dhd->pub);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);

#if defined(MULTIPLE_SUPPLICANT)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25)) && 1
        mutex_unlock(&_dhd_sdio_mutex_lock_);
#endif
#endif /* MULTIPLE_SUPPLICANT */

        printf("%s: Exit ret=%d\n", __FUNCTION__, ret);
        return ret;
}

int dhd_do_driver_init(struct net_device *net)
{
        dhd_info_t *dhd = NULL;

        if (!net) {
                DHD_ERROR(("Primary Interface not initialized \n"));
                return -EINVAL;
        }

#ifdef MULTIPLE_SUPPLICANT
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25)) && 1 && defined(BCMSDIO)
        if (mutex_is_locked(&_dhd_sdio_mutex_lock_) != 0) {
                DHD_ERROR(("%s : dhdsdio_probe is already running!\n", __FUNCTION__));
                return 0;
        }
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25)) */
#endif /* MULTIPLE_SUPPLICANT */

        /*  && defined(OEM_ANDROID) && defined(BCMSDIO) */
        dhd = DHD_DEV_INFO(net);

        /* If driver is already initialized, do nothing
         */
        if (dhd->pub.busstate == DHD_BUS_DATA) {
                DHD_TRACE(("Driver already Inititalized. Nothing to do"));
                return 0;
        }

        if (dhd_open(net) < 0) {
                DHD_ERROR(("Driver Init Failed \n"));
                return -1;
        }

        return 0;
}

int
dhd_event_ifadd(dhd_info_t *dhdinfo, wl_event_data_if_t *ifevent, char *name, uint8 *mac)
{

#ifdef WL_CFG80211
        if (wl_cfg80211_notify_ifadd(ifevent->ifidx, name, mac, ifevent->bssidx) == BCME_OK)
                return BCME_OK;
#endif

        /* handle IF event caused by wl commands, SoftAP, WEXT and
         * anything else. This has to be done asynchronously otherwise
         * DPC will be blocked (and iovars will timeout as DPC has no chance
         * to read the response back)
         */
        if (ifevent->ifidx > 0) {
                dhd_if_event_t *if_event = MALLOC(dhdinfo->pub.osh, sizeof(dhd_if_event_t));
                if (if_event == NULL) {
                        DHD_ERROR(("dhd_event_ifadd: Failed MALLOC, malloced %d bytes",
                                MALLOCED(dhdinfo->pub.osh)));
                        return BCME_NOMEM;
                }

                memcpy(&if_event->event, ifevent, sizeof(if_event->event));
                memcpy(if_event->mac, mac, ETHER_ADDR_LEN);
                strncpy(if_event->name, name, IFNAMSIZ);
                if_event->name[IFNAMSIZ - 1] = '\0';
                dhd_deferred_schedule_work(dhdinfo->dhd_deferred_wq, (void *)if_event,
                        DHD_WQ_WORK_IF_ADD, dhd_ifadd_event_handler, DHD_WORK_PRIORITY_LOW);
        }

        return BCME_OK;
}

int
dhd_event_ifdel(dhd_info_t *dhdinfo, wl_event_data_if_t *ifevent, char *name, uint8 *mac)
{
        dhd_if_event_t *if_event;

#ifdef WL_CFG80211
        if (wl_cfg80211_notify_ifdel(ifevent->ifidx, name, mac, ifevent->bssidx) == BCME_OK)
                return BCME_OK;
#endif /* WL_CFG80211 */

        /* handle IF event caused by wl commands, SoftAP, WEXT and
         * anything else
         */
        if_event = MALLOC(dhdinfo->pub.osh, sizeof(dhd_if_event_t));
        if (if_event == NULL) {
                DHD_ERROR(("dhd_event_ifdel: malloc failed for if_event, malloced %d bytes",
                        MALLOCED(dhdinfo->pub.osh)));
                return BCME_NOMEM;
        }
        memcpy(&if_event->event, ifevent, sizeof(if_event->event));
        memcpy(if_event->mac, mac, ETHER_ADDR_LEN);
        strncpy(if_event->name, name, IFNAMSIZ);
        if_event->name[IFNAMSIZ - 1] = '\0';
        dhd_deferred_schedule_work(dhdinfo->dhd_deferred_wq, (void *)if_event, DHD_WQ_WORK_IF_DEL,
                dhd_ifdel_event_handler, DHD_WORK_PRIORITY_LOW);

        return BCME_OK;
}

/* unregister and free the existing net_device interface (if any) in iflist and
 * allocate a new one. the slot is reused. this function does NOT register the
 * new interface to linux kernel. dhd_register_if does the job
 */
struct net_device*
dhd_allocate_if(dhd_pub_t *dhdpub, int ifidx, char *name,
        uint8 *mac, uint8 bssidx, bool need_rtnl_lock, char *dngl_name)
{
        dhd_info_t *dhdinfo = (dhd_info_t *)dhdpub->info;
        dhd_if_t *ifp;

        ASSERT(dhdinfo && (ifidx < DHD_MAX_IFS));
        ifp = dhdinfo->iflist[ifidx];

        if (ifp != NULL) {
                if (ifp->net != NULL) {
                        DHD_ERROR(("%s: free existing IF %s\n", __FUNCTION__, ifp->net->name));

                        dhd_dev_priv_clear(ifp->net); /* clear net_device private */

                        /* in unregister_netdev case, the interface gets freed by net->destructor
                         * (which is set to free_netdev)
                         */
                        if (ifp->net->reg_state == NETREG_UNINITIALIZED) {
                                free_netdev(ifp->net);
                        } else {
                                netif_stop_queue(ifp->net);
                                if (need_rtnl_lock)
                                        unregister_netdev(ifp->net);
                                else
                                        unregister_netdevice(ifp->net);
                        }
                        ifp->net = NULL;
                }
        } else {
                ifp = MALLOC(dhdinfo->pub.osh, sizeof(dhd_if_t));
                if (ifp == NULL) {
                        DHD_ERROR(("%s: OOM - dhd_if_t(%zu)\n", __FUNCTION__, sizeof(dhd_if_t)));
                        return NULL;
                }
        }

        memset(ifp, 0, sizeof(dhd_if_t));
        ifp->info = dhdinfo;
        ifp->idx = ifidx;
        ifp->bssidx = bssidx;
        if (mac != NULL)
                memcpy(&ifp->mac_addr, mac, ETHER_ADDR_LEN);

        /* Allocate etherdev, including space for private structure */
        ifp->net = alloc_etherdev(DHD_DEV_PRIV_SIZE);
        if (ifp->net == NULL) {
                DHD_ERROR(("%s: OOM - alloc_etherdev(%zu)\n", __FUNCTION__, sizeof(dhdinfo)));
                goto fail;
        }

        /* Setup the dhd interface's netdevice private structure. */
        dhd_dev_priv_save(ifp->net, dhdinfo, ifp, ifidx);

        if (name && name[0]) {
                strncpy(ifp->net->name, name, IFNAMSIZ);
                ifp->net->name[IFNAMSIZ - 1] = '\0';
        }

#ifdef WL_CFG80211
        if (ifidx == 0)
                ifp->net->destructor = free_netdev;
        else
                ifp->net->destructor = dhd_netdev_free;
#else
        ifp->net->destructor = free_netdev;
#endif /* WL_CFG80211 */
        strncpy(ifp->name, ifp->net->name, IFNAMSIZ);
        ifp->name[IFNAMSIZ - 1] = '\0';
        dhdinfo->iflist[ifidx] = ifp;

/* initialize the dongle provided if name */
        if (dngl_name)
                strncpy(ifp->dngl_name, dngl_name, IFNAMSIZ);
        else
                strncpy(ifp->dngl_name, name, IFNAMSIZ);

#ifdef PCIE_FULL_DONGLE
        /* Initialize STA info list */
        INIT_LIST_HEAD(&ifp->sta_list);
        DHD_IF_STA_LIST_LOCK_INIT(ifp);
#endif /* PCIE_FULL_DONGLE */

#ifdef DHD_L2_FILTER
        ifp->phnd_arp_table = init_l2_filter_arp_table(dhdpub->osh);
        ifp->parp_allnode = TRUE;
#endif
        return ifp->net;

fail:

        if (ifp != NULL) {
                if (ifp->net != NULL) {
                        dhd_dev_priv_clear(ifp->net);
                        free_netdev(ifp->net);
                        ifp->net = NULL;
                }
                MFREE(dhdinfo->pub.osh, ifp, sizeof(*ifp));
                ifp = NULL;
        }

        dhdinfo->iflist[ifidx] = NULL;
        return NULL;
}

/* unregister and free the the net_device interface associated with the indexed
 * slot, also free the slot memory and set the slot pointer to NULL
 */
int
dhd_remove_if(dhd_pub_t *dhdpub, int ifidx, bool need_rtnl_lock)
{
        dhd_info_t *dhdinfo = (dhd_info_t *)dhdpub->info;
        dhd_if_t *ifp;

        ifp = dhdinfo->iflist[ifidx];

        if (ifp != NULL) {
                if (ifp->net != NULL) {
                        DHD_ERROR(("deleting interface '%s' idx %d\n", ifp->net->name, ifp->idx));

                        /* in unregister_netdev case, the interface gets freed by net->destructor
                         * (which is set to free_netdev)
                         */
                        if (ifp->net->reg_state == NETREG_UNINITIALIZED) {
                                free_netdev(ifp->net);
                        } else {
                                netif_tx_disable(ifp->net);



#if defined(SET_RPS_CPUS)
                                custom_rps_map_clear(ifp->net->_rx);
#endif /* SET_RPS_CPUS */
#if defined(SET_RPS_CPUS)
#if (defined(DHDTCPACK_SUPPRESS) && defined(BCMPCIE))
                                dhd_tcpack_suppress_set(dhdpub, TCPACK_SUP_OFF);
#endif /* DHDTCPACK_SUPPRESS && BCMPCIE */
#endif 
                                if (need_rtnl_lock)
                                        unregister_netdev(ifp->net);
                                else
                                        unregister_netdevice(ifp->net);
                        }
                        ifp->net = NULL;
                        dhdinfo->iflist[ifidx] = NULL;
                }
#ifdef DHD_WMF
                dhd_wmf_cleanup(dhdpub, ifidx);
#endif /* DHD_WMF */
#ifdef DHD_L2_FILTER
                bcm_l2_filter_arp_table_update(dhdpub->osh, ifp->phnd_arp_table, TRUE,
                        NULL, FALSE, dhdpub->tickcnt);
                deinit_l2_filter_arp_table(dhdpub->osh, ifp->phnd_arp_table);
                ifp->phnd_arp_table = NULL;
#endif /* DHD_L2_FILTER */

                dhd_if_del_sta_list(ifp);

                MFREE(dhdinfo->pub.osh, ifp, sizeof(*ifp));

        }

        return BCME_OK;
}

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 31))
static struct net_device_ops dhd_ops_pri = {
        .ndo_open = dhd_open,
        .ndo_stop = dhd_stop,
        .ndo_get_stats = dhd_get_stats,
        .ndo_do_ioctl = dhd_ioctl_entry,
        .ndo_start_xmit = dhd_start_xmit,
        .ndo_set_mac_address = dhd_set_mac_address,
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 2, 0))
        .ndo_set_rx_mode = dhd_set_multicast_list,
#else
        .ndo_set_multicast_list = dhd_set_multicast_list,
#endif
};

static struct net_device_ops dhd_ops_virt = {
        .ndo_get_stats = dhd_get_stats,
        .ndo_do_ioctl = dhd_ioctl_entry,
        .ndo_start_xmit = dhd_start_xmit,
        .ndo_set_mac_address = dhd_set_mac_address,
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 2, 0))
        .ndo_set_rx_mode = dhd_set_multicast_list,
#else
        .ndo_set_multicast_list = dhd_set_multicast_list,
#endif
};
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 31)) */

#ifdef DEBUGGER
extern void debugger_init(void *bus_handle);
#endif


#ifdef SHOW_LOGTRACE
static char *logstrs_path = "/root/logstrs.bin";
static char *st_str_file_path = "/root/rtecdc.bin";
static char *map_file_path = "/root/rtecdc.map";
static char *rom_st_str_file_path = "/root/roml.bin";
static char *rom_map_file_path = "/root/roml.map";

#define BYTES_AHEAD_NUM         11      /* address in map file is before these many bytes */
#define READ_NUM_BYTES          1000 /* read map file each time this No. of bytes */
#define GO_BACK_FILE_POS_NUM_BYTES      100 /* set file pos back to cur pos */
static char *ramstart_str = "text_start"; /* string in mapfile has addr ramstart */
static char *rodata_start_str = "rodata_start"; /* string in mapfile has addr rodata start */
static char *rodata_end_str = "rodata_end"; /* string in mapfile has addr rodata end */
static char *ram_file_str = "rtecdc";
static char *rom_file_str = "roml";
#define RAMSTART_BIT    0x01
#define RDSTART_BIT             0x02
#define RDEND_BIT               0x04
#define ALL_MAP_VAL             (RAMSTART_BIT | RDSTART_BIT | RDEND_BIT)

module_param(logstrs_path, charp, S_IRUGO);
module_param(st_str_file_path, charp, S_IRUGO);
module_param(map_file_path, charp, S_IRUGO);
module_param(rom_st_str_file_path, charp, S_IRUGO);
module_param(rom_map_file_path, charp, S_IRUGO);

static void
dhd_init_logstrs_array(dhd_event_log_t *temp)
{
        struct file *filep = NULL;
        struct kstat stat;
        mm_segment_t fs;
        char *raw_fmts =  NULL;
        int logstrs_size = 0;

        logstr_header_t *hdr = NULL;
        uint32 *lognums = NULL;
        char *logstrs = NULL;
        int ram_index = 0;
        char **fmts;
        int num_fmts = 0;
        uint32 i = 0;
        int error = 0;

        fs = get_fs();
        set_fs(KERNEL_DS);

        filep = filp_open(logstrs_path, O_RDONLY, 0);

        if (IS_ERR(filep)) {
                DHD_ERROR(("%s: Failed to open the file %s \n", __FUNCTION__, logstrs_path));
                goto fail;
        }
        error = vfs_stat(logstrs_path, &stat);
        if (error) {
                DHD_ERROR(("%s: Failed to stat file %s \n", __FUNCTION__, logstrs_path));
                goto fail;
        }
        logstrs_size = (int) stat.size;

        raw_fmts = kmalloc(logstrs_size, GFP_KERNEL);
        if (raw_fmts == NULL) {
                DHD_ERROR(("%s: Failed to allocate memory \n", __FUNCTION__));
                goto fail;
        }
        if (vfs_read(filep, raw_fmts, logstrs_size, &filep->f_pos) !=   logstrs_size) {
                DHD_ERROR(("%s: Failed to read file %s", __FUNCTION__, logstrs_path));
                goto fail;
        }

        /* Remember header from the logstrs.bin file */
        hdr = (logstr_header_t *) (raw_fmts + logstrs_size -
                sizeof(logstr_header_t));

        if (hdr->log_magic == LOGSTRS_MAGIC) {
                /*
                * logstrs.bin start with header.
                */
                num_fmts =      hdr->rom_logstrs_offset / sizeof(uint32);
                ram_index = (hdr->ram_lognums_offset -
                        hdr->rom_lognums_offset) / sizeof(uint32);
                lognums = (uint32 *) &raw_fmts[hdr->rom_lognums_offset];
                logstrs = (char *)       &raw_fmts[hdr->rom_logstrs_offset];
        } else {
                /*
                 * Legacy logstrs.bin format without header.
                 */
                num_fmts = *((uint32 *) (raw_fmts)) / sizeof(uint32);
                if (num_fmts == 0) {
                        /* Legacy ROM/RAM logstrs.bin format:
                          *  - ROM 'lognums' section
                          *   - RAM 'lognums' section
                          *   - ROM 'logstrs' section.
                          *   - RAM 'logstrs' section.
                          *
                          * 'lognums' is an array of indexes for the strings in the
                          * 'logstrs' section. The first uint32 is 0 (index of first
                          * string in ROM 'logstrs' section).
                          *
                          * The 4324b5 is the only ROM that uses this legacy format. Use the
                          * fixed number of ROM fmtnums to find the start of the RAM
                          * 'lognums' section. Use the fixed first ROM string ("Con\n") to
                          * find the ROM 'logstrs' section.
                          */
                        #define NUM_4324B5_ROM_FMTS     186
                        #define FIRST_4324B5_ROM_LOGSTR "Con\n"
                        ram_index = NUM_4324B5_ROM_FMTS;
                        lognums = (uint32 *) raw_fmts;
                        num_fmts =      ram_index;
                        logstrs = (char *) &raw_fmts[num_fmts << 2];
                        while (strncmp(FIRST_4324B5_ROM_LOGSTR, logstrs, 4)) {
                                num_fmts++;
                                logstrs = (char *) &raw_fmts[num_fmts << 2];
                        }
                } else {
                                /* Legacy RAM-only logstrs.bin format:
                                 *        - RAM 'lognums' section
                                 *        - RAM 'logstrs' section.
                                 *
                                 * 'lognums' is an array of indexes for the strings in the
                                 * 'logstrs' section. The first uint32 is an index to the
                                 * start of 'logstrs'. Therefore, if this index is divided
                                 * by 'sizeof(uint32)' it provides the number of logstr
                                 *      entries.
                                 */
                                ram_index = 0;
                                lognums = (uint32 *) raw_fmts;
                                logstrs = (char *)      &raw_fmts[num_fmts << 2];
                        }
        }
        fmts = kmalloc(num_fmts  * sizeof(char *), GFP_KERNEL);
        if (fmts == NULL) {
                DHD_ERROR(("Failed to allocate fmts memory\n"));
                goto fail;
        }

        for (i = 0; i < num_fmts; i++) {
                /* ROM lognums index into logstrs using 'rom_logstrs_offset' as a base
                * (they are 0-indexed relative to 'rom_logstrs_offset').
                *
                * RAM lognums are already indexed to point to the correct RAM logstrs (they
                * are 0-indexed relative to the start of the logstrs.bin file).
                */
                if (i == ram_index) {
                        logstrs = raw_fmts;
                }
                fmts[i] = &logstrs[lognums[i]];
        }
        temp->fmts = fmts;
        temp->raw_fmts = raw_fmts;
        temp->num_fmts = num_fmts;
        filp_close(filep, NULL);
        set_fs(fs);
        return;
fail:
        if (raw_fmts) {
                kfree(raw_fmts);
                raw_fmts = NULL;
        }
        if (!IS_ERR(filep))
                filp_close(filep, NULL);
        set_fs(fs);
        temp->fmts = NULL;
        return;
}

static int
dhd_read_map(char *fname, uint32 *ramstart, uint32 *rodata_start,
        uint32 *rodata_end)
{
        struct file *filep = NULL;
        mm_segment_t fs;
        char *raw_fmts =  NULL;
        uint32 read_size = READ_NUM_BYTES;
        int error = 0;
        char * cptr = NULL;
        char c;
        uint8 count = 0;

        *ramstart = 0;
        *rodata_start = 0;
        *rodata_end = 0;

        if (fname == NULL) {
                DHD_ERROR(("%s: ERROR fname is NULL \n", __FUNCTION__));
                return BCME_ERROR;
        }

        fs = get_fs();
        set_fs(KERNEL_DS);

        filep = filp_open(fname, O_RDONLY, 0);
        if (IS_ERR(filep)) {
                DHD_ERROR(("%s: Failed to open %s \n",  __FUNCTION__, fname));
                goto fail;
        }

        /* Allocate 1 byte more than read_size to terminate it with NULL */
        raw_fmts = kmalloc(read_size + 1, GFP_KERNEL);
        if (raw_fmts == NULL) {
                DHD_ERROR(("%s: Failed to allocate raw_fmts memory \n", __FUNCTION__));
                goto fail;
        }

        /* read ram start, rodata_start and rodata_end values from map  file */

        while (count != ALL_MAP_VAL)
        {
                error = vfs_read(filep, raw_fmts, read_size, (&filep->f_pos));
                if (error < 0) {
                        DHD_ERROR(("%s: read failed %s err:%d \n", __FUNCTION__,
                                map_file_path, error));
                        goto fail;
                }

                if (error < read_size) {
                        /*
                        * since we reset file pos back to earlier pos by
                        * GO_BACK_FILE_POS_NUM_BYTES bytes we won't reach EOF.
                        * So if ret value is less than read_size, reached EOF don't read further
                        */
                        break;
                }
                /* End raw_fmts with NULL as strstr expects NULL terminated strings */
                raw_fmts[read_size] = '\0';

                /* Get ramstart address */
                if ((cptr = strstr(raw_fmts, ramstart_str))) {
                        cptr = cptr - BYTES_AHEAD_NUM;
                        sscanf(cptr, "%x %c text_start", ramstart, &c);
                        count |= RAMSTART_BIT;
                }

                /* Get ram rodata start address */
                if ((cptr = strstr(raw_fmts, rodata_start_str))) {
                        cptr = cptr - BYTES_AHEAD_NUM;
                        sscanf(cptr, "%x %c rodata_start", rodata_start, &c);
                        count |= RDSTART_BIT;
                }

                /* Get ram rodata end address */
                if ((cptr = strstr(raw_fmts, rodata_end_str))) {
                        cptr = cptr - BYTES_AHEAD_NUM;
                        sscanf(cptr, "%x %c rodata_end", rodata_end, &c);
                        count |= RDEND_BIT;
                }
                memset(raw_fmts, 0, read_size);
                /*
                * go back to predefined NUM of bytes so that we won't miss
                * the string and  addr even if it comes as splited in next read.
                */
                filep->f_pos = filep->f_pos - GO_BACK_FILE_POS_NUM_BYTES;
        }

        DHD_ERROR(("---ramstart: 0x%x, rodata_start: 0x%x, rodata_end:0x%x\n",
                *ramstart, *rodata_start, *rodata_end));

        DHD_ERROR(("readmap over \n"));

fail:
        if (raw_fmts) {
                kfree(raw_fmts);
                raw_fmts = NULL;
        }
        if (!IS_ERR(filep))
                filp_close(filep, NULL);

        set_fs(fs);
        if (count == ALL_MAP_VAL) {
                return BCME_OK;
        }
        DHD_ERROR(("readmap error 0X%x \n", count));
        return BCME_ERROR;
}

static void
dhd_init_static_strs_array(dhd_event_log_t *temp, char *str_file, char *map_file)
{
        struct file *filep = NULL;
        mm_segment_t fs;
        char *raw_fmts =  NULL;
        uint32 logstrs_size = 0;

        int error = 0;
        uint32 ramstart = 0;
        uint32 rodata_start = 0;
        uint32 rodata_end = 0;
        uint32 logfilebase = 0;

        error = dhd_read_map(map_file, &ramstart, &rodata_start, &rodata_end);
        if (error == BCME_ERROR) {
                DHD_ERROR(("readmap Error!! \n"));
                /* don't do event log parsing in actual case */
                temp->raw_sstr = NULL;
                return;
        }
        DHD_ERROR(("ramstart: 0x%x, rodata_start: 0x%x, rodata_end:0x%x\n",
                ramstart, rodata_start, rodata_end));

        fs = get_fs();
        set_fs(KERNEL_DS);

        filep = filp_open(str_file, O_RDONLY, 0);
        if (IS_ERR(filep)) {
                DHD_ERROR(("%s: Failed to open the file %s \n",  __FUNCTION__, str_file));
                goto fail;
        }

        /* Full file size is huge. Just read required part */
        logstrs_size = rodata_end - rodata_start;

        raw_fmts = kmalloc(logstrs_size, GFP_KERNEL);
        if (raw_fmts == NULL) {
                DHD_ERROR(("%s: Failed to allocate raw_fmts memory \n", __FUNCTION__));
                goto fail;
        }

        logfilebase = rodata_start - ramstart;

        error = generic_file_llseek(filep, logfilebase, SEEK_SET);
        if (error < 0) {
                DHD_ERROR(("%s: %s llseek failed %d \n", __FUNCTION__, str_file, error));
                goto fail;
        }

        error = vfs_read(filep, raw_fmts, logstrs_size, (&filep->f_pos));
        if (error != logstrs_size) {
                DHD_ERROR(("%s: %s read failed %d \n", __FUNCTION__, str_file, error));
                goto fail;
        }

        if (strstr(str_file, ram_file_str) != NULL) {
                temp->raw_sstr = raw_fmts;
                temp->ramstart = ramstart;
                temp->rodata_start = rodata_start;
                temp->rodata_end = rodata_end;
        } else if (strstr(str_file, rom_file_str) != NULL) {
                temp->rom_raw_sstr = raw_fmts;
                temp->rom_ramstart = ramstart;
                temp->rom_rodata_start = rodata_start;
                temp->rom_rodata_end = rodata_end;
        }

        filp_close(filep, NULL);
        set_fs(fs);

        return;
fail:
        if (raw_fmts) {
                kfree(raw_fmts);
                raw_fmts = NULL;
        }
        if (!IS_ERR(filep))
                filp_close(filep, NULL);
        set_fs(fs);
        if (strstr(str_file, ram_file_str) != NULL) {
                temp->raw_sstr = NULL;
        } else if (strstr(str_file, rom_file_str) != NULL) {
                temp->rom_raw_sstr = NULL;
        }
        return;
}

#endif /* SHOW_LOGTRACE */


dhd_pub_t *
dhd_attach(osl_t *osh, struct dhd_bus *bus, uint bus_hdrlen)
{
        dhd_info_t *dhd = NULL;
        struct net_device *net = NULL;
        char if_name[IFNAMSIZ] = {'\0'};
        uint32 bus_type = -1;
        uint32 bus_num = -1;
        uint32 slot_num = -1;
        wifi_adapter_info_t *adapter = NULL;

        dhd_attach_states_t dhd_state = DHD_ATTACH_STATE_INIT;
        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

#ifdef STBLINUX
        DHD_ERROR(("%s\n", driver_target));
#endif /* STBLINUX */
        /* will implement get_ids for DBUS later */
#if defined(BCMSDIO)
        dhd_bus_get_ids(bus, &bus_type, &bus_num, &slot_num);
#endif 
        adapter = dhd_wifi_platform_get_adapter(bus_type, bus_num, slot_num);

        /* Allocate primary dhd_info */
        dhd = wifi_platform_prealloc(adapter, DHD_PREALLOC_DHD_INFO, sizeof(dhd_info_t));
        if (dhd == NULL) {
                dhd = MALLOC(osh, sizeof(dhd_info_t));
                if (dhd == NULL) {
                        DHD_ERROR(("%s: OOM - alloc dhd_info\n", __FUNCTION__));
                        goto fail;
                }
        }
        memset(dhd, 0, sizeof(dhd_info_t));
        dhd_state |= DHD_ATTACH_STATE_DHD_ALLOC;

        dhd->unit = dhd_found + instance_base; /* do not increment dhd_found, yet */

        dhd->pub.osh = osh;
        dhd->adapter = adapter;

#ifdef GET_CUSTOM_MAC_ENABLE
        wifi_platform_get_mac_addr(dhd->adapter, dhd->pub.mac.octet);
#endif /* GET_CUSTOM_MAC_ENABLE */
#ifdef CUSTOM_FORCE_NODFS_FLAG
        dhd->pub.dhd_cflags |= WLAN_PLAT_NODFS_FLAG;
        dhd->pub.force_country_change = TRUE;
#endif /* CUSTOM_FORCE_NODFS_FLAG */
#ifdef CUSTOM_COUNTRY_CODE
        get_customized_country_code(dhd->adapter,
                dhd->pub.dhd_cspec.country_abbrev, &dhd->pub.dhd_cspec,
                dhd->pub.dhd_cflags);
#endif /* CUSTOM_COUNTRY_CODE */
        dhd->thr_dpc_ctl.thr_pid = DHD_PID_KT_TL_INVALID;
        dhd->thr_wdt_ctl.thr_pid = DHD_PID_KT_INVALID;

        /* Initialize thread based operation and lock */
        sema_init(&dhd->sdsem, 1);

        /* Link to info module */
        dhd->pub.info = dhd;


        /* Link to bus module */
        dhd->pub.bus = bus;
        dhd->pub.hdrlen = bus_hdrlen;

        /* dhd_conf must be attached after linking dhd to dhd->pub.info,
         * because dhd_detech will check .info is NULL or not.
        */
        if (dhd_conf_attach(&dhd->pub) != 0) {
                DHD_ERROR(("dhd_conf_attach failed\n"));
                goto fail;
        }
        dhd_conf_reset(&dhd->pub);
        dhd_conf_set_chiprev(&dhd->pub, dhd_bus_chip(bus), dhd_bus_chiprev(bus));
        dhd_conf_preinit(&dhd->pub);

        /* Some DHD modules (e.g. cfg80211) configures operation mode based on firmware name.
         * This is indeed a hack but we have to make it work properly before we have a better
         * solution
         */
        dhd_update_fw_nv_path(dhd);
#ifndef BUILD_IN_KERNEL
        dhd_conf_read_config(&dhd->pub, dhd->conf_path);
#endif

        /* Set network interface name if it was provided as module parameter */
        if (iface_name[0]) {
                int len;
                char ch;
                strncpy(if_name, iface_name, IFNAMSIZ);
                if_name[IFNAMSIZ - 1] = 0;
                len = strlen(if_name);
                ch = if_name[len - 1];
                if ((ch > '9' || ch < '0') && (len < IFNAMSIZ - 2))
                        strcat(if_name, "%d");
        }

        /* Passing NULL to dngl_name to ensure host gets if_name in dngl_name member */
        net = dhd_allocate_if(&dhd->pub, 0, if_name, NULL, 0, TRUE, NULL);
        if (net == NULL) {
                goto fail;
        }


        dhd_state |= DHD_ATTACH_STATE_ADD_IF;
#ifdef DHD_L2_FILTER
        /* initialize the l2_filter_cnt */
        dhd->pub.l2_filter_cnt = 0;
#endif
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31))
        net->open = NULL;
#else
        net->netdev_ops = NULL;
#endif

        mutex_init(&dhd->dhd_iovar_mutex);
        sema_init(&dhd->proto_sem, 1);

#ifdef PROP_TXSTATUS
        spin_lock_init(&dhd->wlfc_spinlock);

        dhd->pub.skip_fc = dhd_wlfc_skip_fc;
        dhd->pub.plat_init = dhd_wlfc_plat_init;
        dhd->pub.plat_deinit = dhd_wlfc_plat_deinit;

#ifdef DHD_WLFC_THREAD
        init_waitqueue_head(&dhd->pub.wlfc_wqhead);
        dhd->pub.wlfc_thread = kthread_create(dhd_wlfc_transfer_packets, &dhd->pub, "wlfc-thread");
        if (IS_ERR(dhd->pub.wlfc_thread)) {
                DHD_ERROR(("create wlfc thread failed\n"));
                goto fail;
        } else {
                wake_up_process(dhd->pub.wlfc_thread);
        }
#endif /* DHD_WLFC_THREAD */
#endif /* PROP_TXSTATUS */

        /* Initialize other structure content */
        init_waitqueue_head(&dhd->ioctl_resp_wait);
        init_waitqueue_head(&dhd->d3ack_wait);
        init_waitqueue_head(&dhd->ctrl_wait);
        init_waitqueue_head(&dhd->dhd_bus_busy_state_wait);
        dhd->pub.dhd_bus_busy_state = 0;

        /* Initialize the spinlocks */
        spin_lock_init(&dhd->sdlock);
        spin_lock_init(&dhd->txqlock);
        spin_lock_init(&dhd->dhd_lock);
        spin_lock_init(&dhd->rxf_lock);
#if defined(RXFRAME_THREAD)
        dhd->rxthread_enabled = TRUE;
#endif /* defined(RXFRAME_THREAD) */

#ifdef DHDTCPACK_SUPPRESS
        spin_lock_init(&dhd->tcpack_lock);
#endif /* DHDTCPACK_SUPPRESS */

        /* Initialize Wakelock stuff */
        spin_lock_init(&dhd->wakelock_spinlock);
        spin_lock_init(&dhd->wakelock_evt_spinlock);
        DHD_OS_WAKE_LOCK_INIT(dhd);
        dhd->wakelock_wd_counter = 0;
#ifdef CONFIG_HAS_WAKELOCK
        wake_lock_init(&dhd->wl_wdwake, WAKE_LOCK_SUSPEND, "wlan_wd_wake");
#endif /* CONFIG_HAS_WAKELOCK */

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        mutex_init(&dhd->dhd_net_if_mutex);
        mutex_init(&dhd->dhd_suspend_mutex);
#endif
        dhd_state |= DHD_ATTACH_STATE_WAKELOCKS_INIT;

        /* Attach and link in the protocol */
        if (dhd_prot_attach(&dhd->pub) != 0) {
                DHD_ERROR(("dhd_prot_attach failed\n"));
                goto fail;
        }
        dhd_state |= DHD_ATTACH_STATE_PROT_ATTACH;

#ifdef WL_CFG80211
        /* Attach and link in the cfg80211 */
        if (unlikely(wl_cfg80211_attach(net, &dhd->pub))) {
                DHD_ERROR(("wl_cfg80211_attach failed\n"));
                goto fail;
        }

        dhd_monitor_init(&dhd->pub);
        dhd_state |= DHD_ATTACH_STATE_CFG80211;
#endif
#ifdef DHD_LOG_DUMP
        dhd_log_dump_init(&dhd->pub);
#endif /* DHD_LOG_DUMP */
#if defined(WL_WIRELESS_EXT)
        /* Attach and link in the iw */
        if (!(dhd_state &  DHD_ATTACH_STATE_CFG80211)) {
                if (wl_iw_attach(net, (void *)&dhd->pub) != 0) {
                        DHD_ERROR(("wl_iw_attach failed\n"));
                        goto fail;
                }
                dhd_state |= DHD_ATTACH_STATE_WL_ATTACH;
        }
#endif /* defined(WL_WIRELESS_EXT) */

#ifdef SHOW_LOGTRACE
        dhd_init_logstrs_array(&dhd->event_data);
        dhd_init_static_strs_array(&dhd->event_data, st_str_file_path, map_file_path);
        dhd_init_static_strs_array(&dhd->event_data, rom_st_str_file_path, rom_map_file_path);
#endif /* SHOW_LOGTRACE */

        if (dhd_sta_pool_init(&dhd->pub, DHD_MAX_STA) != BCME_OK) {
                DHD_ERROR(("%s: Initializing %u sta\n", __FUNCTION__, DHD_MAX_STA));
                goto fail;
        }



        /* Set up the watchdog timer */
        init_timer(&dhd->timer);
        dhd->timer.data = (ulong)dhd;
        dhd->timer.function = dhd_watchdog;
        dhd->default_wd_interval = dhd_watchdog_ms;

        if (dhd_watchdog_prio >= 0) {
                /* Initialize watchdog thread */
                PROC_START(dhd_watchdog_thread, dhd, &dhd->thr_wdt_ctl, 0, "dhd_watchdog_thread");
                if (dhd->thr_wdt_ctl.thr_pid < 0) {
                        goto fail;
                }

        } else {
                dhd->thr_wdt_ctl.thr_pid = -1;
        }

#ifdef DHD_PCIE_RUNTIMEPM
        /* Setup up the runtime PM Idlecount timer */
        init_timer(&dhd->rpm_timer);
        dhd->rpm_timer.data = (ulong)dhd;
        dhd->rpm_timer.function = dhd_runtimepm;
        dhd->rpm_timer_valid = FALSE;

        dhd->thr_rpm_ctl.thr_pid = DHD_PID_KT_INVALID;
        PROC_START(dhd_rpm_state_thread, dhd, &dhd->thr_rpm_ctl, 0, "dhd_rpm_state_thread");
        if (dhd->thr_rpm_ctl.thr_pid < 0) {
                goto fail;
        }
#endif /* DHD_PCIE_RUNTIMEPM */

#ifdef DEBUGGER
        debugger_init((void *) bus);
#endif

        /* Set up the bottom half handler */
        if (dhd_dpc_prio >= 0) {
                /* Initialize DPC thread */
                PROC_START(dhd_dpc_thread, dhd, &dhd->thr_dpc_ctl, 0, "dhd_dpc");
                if (dhd->thr_dpc_ctl.thr_pid < 0) {
                        goto fail;
                }
        } else {
                /*  use tasklet for dpc */
                tasklet_init(&dhd->tasklet, dhd_dpc, (ulong)dhd);
                dhd->thr_dpc_ctl.thr_pid = -1;
        }

        if (dhd->rxthread_enabled) {
                bzero(&dhd->pub.skbbuf[0], sizeof(void *) * MAXSKBPEND);
                /* Initialize RXF thread */
                PROC_START(dhd_rxf_thread, dhd, &dhd->thr_rxf_ctl, 0, "dhd_rxf");
                if (dhd->thr_rxf_ctl.thr_pid < 0) {
                        goto fail;
                }
        }

        dhd_state |= DHD_ATTACH_STATE_THREADS_CREATED;

#if defined(CONFIG_PM_SLEEP)
        if (!dhd_pm_notifier_registered) {
                dhd_pm_notifier_registered = TRUE;
                dhd->pm_notifier.notifier_call = dhd_pm_callback;
                dhd->pm_notifier.priority = 10;
                register_pm_notifier(&dhd->pm_notifier);
        }

#endif /* CONFIG_PM_SLEEP */

#if defined(CONFIG_HAS_EARLYSUSPEND) && defined(DHD_USE_EARLYSUSPEND)
        dhd->early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 20;
        dhd->early_suspend.suspend = dhd_early_suspend;
        dhd->early_suspend.resume = dhd_late_resume;
        register_early_suspend(&dhd->early_suspend);
        dhd_state |= DHD_ATTACH_STATE_EARLYSUSPEND_DONE;
#endif /* CONFIG_HAS_EARLYSUSPEND && DHD_USE_EARLYSUSPEND */

#ifdef ARP_OFFLOAD_SUPPORT
        dhd->pend_ipaddr = 0;
        if (!dhd_inetaddr_notifier_registered) {
                dhd_inetaddr_notifier_registered = TRUE;
                register_inetaddr_notifier(&dhd_inetaddr_notifier);
        }
#endif /* ARP_OFFLOAD_SUPPORT */

#if defined(CONFIG_IPV6) && defined(IPV6_NDO_SUPPORT)
        if (!dhd_inet6addr_notifier_registered) {
                dhd_inet6addr_notifier_registered = TRUE;
                register_inet6addr_notifier(&dhd_inet6addr_notifier);
        }
#endif /* CONFIG_IPV6 && IPV6_NDO_SUPPORT */
        dhd->dhd_deferred_wq = dhd_deferred_work_init((void *)dhd);
#ifdef DEBUG_CPU_FREQ
        dhd->new_freq = alloc_percpu(int);
        dhd->freq_trans.notifier_call = dhd_cpufreq_notifier;
        cpufreq_register_notifier(&dhd->freq_trans, CPUFREQ_TRANSITION_NOTIFIER);
#endif
#ifdef DHDTCPACK_SUPPRESS
#ifdef BCMSDIO
        dhd_tcpack_suppress_set(&dhd->pub, TCPACK_SUP_DELAYTX);
#elif defined(BCMPCIE)
        dhd_tcpack_suppress_set(&dhd->pub, TCPACK_SUP_HOLD);
#else
        dhd_tcpack_suppress_set(&dhd->pub, TCPACK_SUP_OFF);
#endif /* BCMSDIO */
#endif /* DHDTCPACK_SUPPRESS */

#if defined(BCM_DNGL_EMBEDIMAGE) || defined(BCM_REQUEST_FW)
#endif /* defined(BCM_DNGL_EMBEDIMAGE) || defined(BCM_REQUEST_FW) */

        dhd_state |= DHD_ATTACH_STATE_DONE;
        dhd->dhd_state = dhd_state;

        dhd_found++;
#ifdef DHD_DEBUG_PAGEALLOC
        register_page_corrupt_cb(dhd_page_corrupt_cb, &dhd->pub);
#endif /* DHD_DEBUG_PAGEALLOC */

#if defined(DHD_LB)
        DHD_ERROR(("DHD LOAD BALANCING Enabled\n"));

        dhd_lb_set_default_cpus(dhd);

        /* Initialize the CPU Masks */
        if (dhd_cpumasks_init(dhd) ==  0) {

                /* Now we have the current CPU maps, run through candidacy */
                dhd_select_cpu_candidacy(dhd);

                /*
                 * If we are able to initialize CPU masks, lets register to the
                 * CPU Hotplug framework to change the CPU for each job dynamically
                 * using candidacy algorithm.
                 */
                dhd->cpu_notifier.notifier_call = dhd_cpu_callback;
                register_cpu_notifier(&dhd->cpu_notifier); /* Register a callback */
        } else {
                /*
                 * We are unable to initialize CPU masks, so candidacy algorithm
                 * won't run, but still Load Balancing will be honoured based
                 * on the CPUs allocated for a given job statically during init
                 */
                dhd->cpu_notifier.notifier_call = NULL;
                DHD_ERROR(("%s(): dhd_cpumasks_init failed CPUs for JOB would be static\n",
                        __FUNCTION__));
        }


        DHD_LB_STATS_INIT(&dhd->pub);

        /* Initialize the Load Balancing Tasklets and Napi object */
#if defined(DHD_LB_TXC)
        tasklet_init(&dhd->tx_compl_tasklet,
                dhd_lb_tx_compl_handler, (ulong)(&dhd->pub));
        INIT_WORK(&dhd->tx_compl_dispatcher_work, dhd_tx_compl_dispatcher_fn);
        DHD_INFO(("%s load balance init tx_compl_tasklet\n", __FUNCTION__));
#endif /* DHD_LB_TXC */

#if defined(DHD_LB_RXC)
        tasklet_init(&dhd->rx_compl_tasklet,
                dhd_lb_rx_compl_handler, (ulong)(&dhd->pub));
        INIT_WORK(&dhd->rx_compl_dispatcher_work, dhd_rx_compl_dispatcher_fn);
        DHD_INFO(("%s load balance init rx_compl_tasklet\n", __FUNCTION__));
#endif /* DHD_LB_RXC */

#if defined(DHD_LB_RXP)
         __skb_queue_head_init(&dhd->rx_pend_queue);
        skb_queue_head_init(&dhd->rx_napi_queue);

        /* Initialize the work that dispatches NAPI job to a given core */
        INIT_WORK(&dhd->rx_napi_dispatcher_work, dhd_rx_napi_dispatcher_fn);
        DHD_INFO(("%s load balance init rx_napi_queue\n", __FUNCTION__));
#endif /* DHD_LB_RXP */

#endif /* DHD_LB */

        INIT_DELAYED_WORK(&dhd->dhd_memdump_work, dhd_memdump_work_handler);

        (void)dhd_sysfs_init(dhd);

        return &dhd->pub;

fail:
        if (dhd_state >= DHD_ATTACH_STATE_DHD_ALLOC) {
                DHD_TRACE(("%s: Calling dhd_detach dhd_state 0x%x &dhd->pub %p\n",
                        __FUNCTION__, dhd_state, &dhd->pub));
                dhd->dhd_state = dhd_state;
                dhd_detach(&dhd->pub);
                dhd_free(&dhd->pub);
        }

        return NULL;
}

#include <linux/delay.h>

void dhd_memdump_work_schedule(dhd_pub_t *dhdp, unsigned long msecs)
{
        dhd_info_t *dhd = (dhd_info_t*)dhdp->info;

        schedule_delayed_work(&dhd->dhd_memdump_work, msecs_to_jiffies(msecs));
}

int dhd_get_fw_mode(dhd_info_t *dhdinfo)
{
        if (strstr(dhdinfo->fw_path, "_apsta") != NULL)
                return DHD_FLAG_HOSTAP_MODE;
        if (strstr(dhdinfo->fw_path, "_p2p") != NULL)
                return DHD_FLAG_P2P_MODE;
        if (strstr(dhdinfo->fw_path, "_ibss") != NULL)
                return DHD_FLAG_IBSS_MODE;
        if (strstr(dhdinfo->fw_path, "_mfg") != NULL)
                return DHD_FLAG_MFG_MODE;

        return DHD_FLAG_STA_MODE;
}

extern int rkwifi_set_firmware(char *fw, char *nvram);
bool dhd_update_fw_nv_path(dhd_info_t *dhdinfo)
{
        int fw_len;
        int nv_len;
        int conf_len;
        const char *fw = NULL;
        const char *nv = NULL;
        const char *conf = NULL;
        char firmware[100] = {0};
        char nvram[100] = {0};
        wifi_adapter_info_t *adapter = dhdinfo->adapter;


        /* Update firmware and nvram path. The path may be from adapter info or module parameter
         * The path from adapter info is used for initialization only (as it won't change).
         *
         * The firmware_path/nvram_path module parameter may be changed by the system at run
         * time. When it changes we need to copy it to dhdinfo->fw_path. Also Android private
         * command may change dhdinfo->fw_path. As such we need to clear the path info in
         * module parameter after it is copied. We won't update the path until the module parameter
         * is changed again (first character is not '\0')
         */

        /* set default firmware and nvram path for built-in type driver */
//      if (!dhd_download_fw_on_driverload) {
                rkwifi_set_firmware(firmware, nvram);
#ifdef CONFIG_BCMDHD_FW_PATH
                fw = CONFIG_BCMDHD_FW_PATH;
#else
                fw = firmware;
#endif /* CONFIG_BCMDHD_FW_PATH */
#ifdef CONFIG_BCMDHD_NVRAM_PATH
                nv = CONFIG_BCMDHD_NVRAM_PATH;
#else
                nv = nvram;
#endif /* CONFIG_BCMDHD_NVRAM_PATH */
//      }

        /* check if we need to initialize the path */
        if (dhdinfo->fw_path[0] == '\0') {
                if (adapter && adapter->fw_path && adapter->fw_path[0] != '\0')
                        fw = adapter->fw_path;

        }
        if (dhdinfo->nv_path[0] == '\0') {
                if (adapter && adapter->nv_path && adapter->nv_path[0] != '\0')
                        nv = adapter->nv_path;
        }
        if (dhdinfo->conf_path[0] == '\0') {
                if (adapter && adapter->conf_path && adapter->conf_path[0] != '\0')
                        conf = adapter->conf_path;
        }

        /* Use module parameter if it is valid, EVEN IF the path has not been initialized
         *
         * TODO: need a solution for multi-chip, can't use the same firmware for all chips
         */
        if (firmware_path[0] != '\0')
                fw = firmware_path;
        if (nvram_path[0] != '\0')
                nv = nvram_path;
        if (config_path[0] != '\0')
                conf = config_path;

        if (fw && fw[0] != '\0') {
                fw_len = strlen(fw);
                if (fw_len >= sizeof(dhdinfo->fw_path)) {
                        DHD_ERROR(("fw path len exceeds max len of dhdinfo->fw_path\n"));
                        return FALSE;
                }
                strncpy(dhdinfo->fw_path, fw, sizeof(dhdinfo->fw_path));
                if (dhdinfo->fw_path[fw_len-1] == '\n')
                       dhdinfo->fw_path[fw_len-1] = '\0';
        }
        if (nv && nv[0] != '\0') {
                nv_len = strlen(nv);
                if (nv_len >= sizeof(dhdinfo->nv_path)) {
                        DHD_ERROR(("nvram path len exceeds max len of dhdinfo->nv_path\n"));
                        return FALSE;
                }
                strncpy(dhdinfo->nv_path, nv, sizeof(dhdinfo->nv_path));
                if (dhdinfo->nv_path[nv_len-1] == '\n')
                       dhdinfo->nv_path[nv_len-1] = '\0';
        }
        if (conf && conf[0] != '\0') {
                conf_len = strlen(conf);
                if (conf_len >= sizeof(dhdinfo->conf_path)) {
                        DHD_ERROR(("config path len exceeds max len of dhdinfo->conf_path\n"));
                        return FALSE;
                }
                strncpy(dhdinfo->conf_path, conf, sizeof(dhdinfo->conf_path));
                if (dhdinfo->conf_path[conf_len-1] == '\n')
                       dhdinfo->conf_path[conf_len-1] = '\0';
        }

#if 0
        /* clear the path in module parameter */
        if (dhd_download_fw_on_driverload) {
                firmware_path[0] = '\0';
                nvram_path[0] = '\0';
                config_path[0] = '\0';
        }
#endif

#ifndef BCMEMBEDIMAGE
        /* fw_path and nv_path are not mandatory for BCMEMBEDIMAGE */
        if (dhdinfo->fw_path[0] == '\0') {
                DHD_ERROR(("firmware path not found\n"));
                return FALSE;
        }
        if (dhdinfo->nv_path[0] == '\0') {
                DHD_ERROR(("nvram path not found\n"));
                return FALSE;
        }
        if (dhdinfo->conf_path[0] == '\0') {
                dhd_conf_set_conf_path_by_nv_path(&dhdinfo->pub, dhdinfo->conf_path, dhdinfo->nv_path);
        }
#ifdef CONFIG_PATH_AUTO_SELECT
        dhd_conf_set_conf_name_by_chip(&dhdinfo->pub, dhdinfo->conf_path);
#endif
#endif /* BCMEMBEDIMAGE */

        return TRUE;
}

#ifdef CUSTOMER_HW4_DEBUG
bool dhd_validate_chipid(dhd_pub_t *dhdp)
{
        uint chipid = dhd_bus_chip_id(dhdp);
        uint config_chipid;

#ifdef BCM4359_CHIP
        config_chipid = BCM4359_CHIP_ID;
#elif defined(BCM4358_CHIP)
        config_chipid = BCM4358_CHIP_ID;
#elif defined(BCM4354_CHIP)
        config_chipid = BCM4354_CHIP_ID;
#elif defined(BCM4356_CHIP)
        config_chipid = BCM4356_CHIP_ID;
#elif defined(BCM4339_CHIP)
        config_chipid = BCM4339_CHIP_ID;
#elif defined(BCM43349_CHIP)
        config_chipid = BCM43349_CHIP_ID;
#elif defined(BCM4335_CHIP)
        config_chipid = BCM4335_CHIP_ID;
#elif defined(BCM43241_CHIP)
        config_chipid = BCM4324_CHIP_ID;
#elif defined(BCM4330_CHIP)
        config_chipid = BCM4330_CHIP_ID;
#elif defined(BCM43430_CHIP)
        config_chipid = BCM43430_CHIP_ID;
#elif defined(BCM4334W_CHIP)
        config_chipid = BCM43342_CHIP_ID;
#elif defined(BCM43455_CHIP)
        config_chipid = BCM4345_CHIP_ID;
#else
        DHD_ERROR(("%s: Unknown chip id, if you use new chipset,"
                " please add CONFIG_BCMXXXX into the Kernel and"
                " BCMXXXX_CHIP definition into the DHD driver\n",
                __FUNCTION__));
        config_chipid = 0;

        return FALSE;
#endif /* BCM4354_CHIP */

#if defined(BCM4359_CHIP)
        if (chipid == BCM4355_CHIP_ID && config_chipid == BCM4359_CHIP_ID) {
                return TRUE;
        }
#endif /* BCM4359_CHIP */

        return config_chipid == chipid;
}
#endif /* CUSTOMER_HW4_DEBUG */

int
dhd_bus_start(dhd_pub_t *dhdp)
{
        int ret = -1;
        dhd_info_t *dhd = (dhd_info_t*)dhdp->info;
        unsigned long flags;

        ASSERT(dhd);

        DHD_TRACE(("Enter %s:\n", __FUNCTION__));

        DHD_PERIM_LOCK(dhdp);

        /* try to download image and nvram to the dongle */
        if  (dhd->pub.busstate == DHD_BUS_DOWN && dhd_update_fw_nv_path(dhd)) {
                /* Indicate FW Download has not yet done */
                dhd->pub.is_fw_download_done = FALSE;
                DHD_INFO(("%s download fw %s, nv %s, conf %s\n",
                        __FUNCTION__, dhd->fw_path, dhd->nv_path, dhd->conf_path));
                ret = dhd_bus_download_firmware(dhd->pub.bus, dhd->pub.osh,
                        dhd->fw_path, dhd->nv_path, dhd->conf_path);
                if (ret < 0) {
                        DHD_ERROR(("%s: failed to download firmware %s\n",
                                __FUNCTION__, dhd->fw_path));
                        DHD_PERIM_UNLOCK(dhdp);
                        return ret;
                }
                /* Indicate FW Download has succeeded */
                dhd->pub.is_fw_download_done = TRUE;
        }
        if (dhd->pub.busstate != DHD_BUS_LOAD) {
                DHD_PERIM_UNLOCK(dhdp);
                return -ENETDOWN;
        }

        dhd_os_sdlock(dhdp);

        /* Start the watchdog timer */
        dhd->pub.tickcnt = 0;
        dhd_os_wd_timer(&dhd->pub, dhd_watchdog_ms);
        DHD_ENABLE_RUNTIME_PM(&dhd->pub);

        /* Bring up the bus */
        if ((ret = dhd_bus_init(&dhd->pub, FALSE)) != 0) {

                DHD_ERROR(("%s, dhd_bus_init failed %d\n", __FUNCTION__, ret));
                dhd_os_sdunlock(dhdp);
                DHD_PERIM_UNLOCK(dhdp);
                return ret;
        }
#if defined(OOB_INTR_ONLY) || defined(BCMPCIE_OOB_HOST_WAKE)
#if defined(BCMPCIE_OOB_HOST_WAKE)
        dhd_os_sdunlock(dhdp);
#endif /* BCMPCIE_OOB_HOST_WAKE */
        /* Host registration for OOB interrupt */
        if (dhd_bus_oob_intr_register(dhdp)) {
                /* deactivate timer and wait for the handler to finish */
#if !defined(BCMPCIE_OOB_HOST_WAKE)
                DHD_GENERAL_LOCK(&dhd->pub, flags);
                dhd->wd_timer_valid = FALSE;
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
                del_timer_sync(&dhd->timer);

                dhd_os_sdunlock(dhdp);
#endif /* !BCMPCIE_OOB_HOST_WAKE */
                DHD_DISABLE_RUNTIME_PM(&dhd->pub);
                DHD_PERIM_UNLOCK(dhdp);
                DHD_OS_WD_WAKE_UNLOCK(&dhd->pub);
                DHD_ERROR(("%s Host failed to register for OOB\n", __FUNCTION__));
                return -ENODEV;
        }

#if defined(BCMPCIE_OOB_HOST_WAKE)
        dhd_os_sdlock(dhdp);
        dhd_bus_oob_intr_set(dhdp, TRUE);
#else
        /* Enable oob at firmware */
        dhd_enable_oob_intr(dhd->pub.bus, TRUE);
#endif /* BCMPCIE_OOB_HOST_WAKE */
#elif defined(FORCE_WOWLAN)
        /* Enable oob at firmware */
        dhd_enable_oob_intr(dhd->pub.bus, TRUE);
#endif 
#ifdef PCIE_FULL_DONGLE
        {
                /* max_h2d_rings includes H2D common rings */
                uint32 max_h2d_rings = dhd_bus_max_h2d_queues(dhd->pub.bus);

                DHD_ERROR(("%s: Initializing %u h2drings\n", __FUNCTION__,
                        max_h2d_rings));
                if ((ret = dhd_flow_rings_init(&dhd->pub, max_h2d_rings)) != BCME_OK) {
                        dhd_os_sdunlock(dhdp);
                        DHD_PERIM_UNLOCK(dhdp);
                        return ret;
                }
        }
#endif /* PCIE_FULL_DONGLE */

        /* Do protocol initialization necessary for IOCTL/IOVAR */
#ifdef PCIE_FULL_DONGLE
        dhd_os_sdunlock(dhdp);
#endif /* PCIE_FULL_DONGLE */
        ret = dhd_prot_init(&dhd->pub);
        if (unlikely(ret) != BCME_OK) {
                DHD_PERIM_UNLOCK(dhdp);
                DHD_OS_WD_WAKE_UNLOCK(&dhd->pub);
                return ret;
        }
#ifdef PCIE_FULL_DONGLE
        dhd_os_sdlock(dhdp);
#endif /* PCIE_FULL_DONGLE */

        /* If bus is not ready, can't come up */
        if (dhd->pub.busstate != DHD_BUS_DATA) {
                DHD_GENERAL_LOCK(&dhd->pub, flags);
                dhd->wd_timer_valid = FALSE;
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
                del_timer_sync(&dhd->timer);
                DHD_ERROR(("%s failed bus is not ready\n", __FUNCTION__));
                DHD_DISABLE_RUNTIME_PM(&dhd->pub);
                dhd_os_sdunlock(dhdp);
                DHD_PERIM_UNLOCK(dhdp);
                DHD_OS_WD_WAKE_UNLOCK(&dhd->pub);
                return -ENODEV;
        }

        dhd_os_sdunlock(dhdp);

        /* Bus is ready, query any dongle information */
        if ((ret = dhd_sync_with_dongle(&dhd->pub)) < 0) {
                DHD_GENERAL_LOCK(&dhd->pub, flags);
                dhd->wd_timer_valid = FALSE;
                DHD_GENERAL_UNLOCK(&dhd->pub, flags);
                del_timer_sync(&dhd->timer);
                DHD_ERROR(("%s failed to sync with dongle\n", __FUNCTION__));
                DHD_DISABLE_RUNTIME_PM(&dhd->pub);
                DHD_OS_WD_WAKE_UNLOCK(&dhd->pub);
                DHD_PERIM_UNLOCK(dhdp);
                return ret;
        }

#ifdef ARP_OFFLOAD_SUPPORT
        if (dhd->pend_ipaddr) {
#ifdef AOE_IP_ALIAS_SUPPORT
                aoe_update_host_ipv4_table(&dhd->pub, dhd->pend_ipaddr, TRUE, 0);
#endif /* AOE_IP_ALIAS_SUPPORT */
                dhd->pend_ipaddr = 0;
        }
#endif /* ARP_OFFLOAD_SUPPORT */

        DHD_PERIM_UNLOCK(dhdp);
        return 0;
}

#ifdef WLTDLS
int _dhd_tdls_enable(dhd_pub_t *dhd, bool tdls_on, bool auto_on, struct ether_addr *mac)
{
        char iovbuf[WLC_IOCTL_SMLEN];
        uint32 tdls = tdls_on;
        int ret = 0;
        uint32 tdls_auto_op = 0;
        uint32 tdls_idle_time = CUSTOM_TDLS_IDLE_MODE_SETTING;
        int32 tdls_rssi_high = CUSTOM_TDLS_RSSI_THRESHOLD_HIGH;
        int32 tdls_rssi_low = CUSTOM_TDLS_RSSI_THRESHOLD_LOW;
        BCM_REFERENCE(mac);
        if (!FW_SUPPORTED(dhd, tdls))
                return BCME_ERROR;

        if (dhd->tdls_enable == tdls_on)
                goto auto_mode;
        bcm_mkiovar("tdls_enable", (char *)&tdls, sizeof(tdls), iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s: tdls %d failed %d\n", __FUNCTION__, tdls, ret));
                goto exit;
        }
        dhd->tdls_enable = tdls_on;
auto_mode:

        tdls_auto_op = auto_on;
        bcm_mkiovar("tdls_auto_op", (char *)&tdls_auto_op, sizeof(tdls_auto_op),
                iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s: tdls_auto_op failed %d\n", __FUNCTION__, ret));
                goto exit;
        }

        if (tdls_auto_op) {
                bcm_mkiovar("tdls_idle_time", (char *)&tdls_idle_time,
                        sizeof(tdls_idle_time), iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) {
                        DHD_ERROR(("%s: tdls_idle_time failed %d\n", __FUNCTION__, ret));
                        goto exit;
                }
                bcm_mkiovar("tdls_rssi_high", (char *)&tdls_rssi_high, 4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) {
                        DHD_ERROR(("%s: tdls_rssi_high failed %d\n", __FUNCTION__, ret));
                        goto exit;
                }
                bcm_mkiovar("tdls_rssi_low", (char *)&tdls_rssi_low, 4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) {
                        DHD_ERROR(("%s: tdls_rssi_low failed %d\n", __FUNCTION__, ret));
                        goto exit;
                }
        }

exit:
        return ret;
}

int dhd_tdls_enable(struct net_device *dev, bool tdls_on, bool auto_on, struct ether_addr *mac)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret = 0;
        if (dhd)
                ret = _dhd_tdls_enable(&dhd->pub, tdls_on, auto_on, mac);
        else
                ret = BCME_ERROR;
        return ret;
}
int
dhd_tdls_set_mode(dhd_pub_t *dhd, bool wfd_mode)
{
        char iovbuf[WLC_IOCTL_SMLEN];
        int ret = 0;
        bool auto_on = false;
        uint32 mode =  wfd_mode;

#ifdef ENABLE_TDLS_AUTO_MODE
        if (wfd_mode) {
                auto_on = false;
        } else {
                auto_on = true;
        }
#else
        auto_on = false;
#endif /* ENABLE_TDLS_AUTO_MODE */
        ret = _dhd_tdls_enable(dhd, false, auto_on, NULL);
        if (ret < 0) {
                DHD_ERROR(("Disable tdls_auto_op failed. %d\n", ret));
                return ret;
        }


        bcm_mkiovar("tdls_wfd_mode", (char *)&mode, sizeof(mode),
                        iovbuf, sizeof(iovbuf));
        if (((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) &&
                        (ret != BCME_UNSUPPORTED)) {
                DHD_ERROR(("%s: tdls_wfd_mode faile_wfd_mode %d\n", __FUNCTION__, ret));
                return ret;
        }

        ret = _dhd_tdls_enable(dhd, true, auto_on, NULL);
        if (ret < 0) {
                DHD_ERROR(("enable tdls_auto_op failed. %d\n", ret));
                return ret;
        }

        dhd->tdls_mode = mode;
        return ret;
}
#ifdef PCIE_FULL_DONGLE
void dhd_tdls_update_peer_info(struct net_device *dev, bool connect, uint8 *da)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        dhd_pub_t *dhdp =  (dhd_pub_t *)&dhd->pub;
        tdls_peer_node_t *cur = dhdp->peer_tbl.node;
        tdls_peer_node_t *new = NULL, *prev = NULL;
        dhd_if_t *dhdif;
        uint8 sa[ETHER_ADDR_LEN];
        int ifidx = dhd_net2idx(dhd, dev);

        if (ifidx == DHD_BAD_IF)
                return;

        dhdif = dhd->iflist[ifidx];
        memcpy(sa, dhdif->mac_addr, ETHER_ADDR_LEN);

        if (connect) {
                while (cur != NULL) {
                        if (!memcmp(da, cur->addr, ETHER_ADDR_LEN)) {
                                DHD_ERROR(("%s: TDLS Peer exist already %d\n",
                                        __FUNCTION__, __LINE__));
                                return;
                        }
                        cur = cur->next;
                }

                new = MALLOC(dhdp->osh, sizeof(tdls_peer_node_t));
                if (new == NULL) {
                        DHD_ERROR(("%s: Failed to allocate memory\n", __FUNCTION__));
                        return;
                }
                memcpy(new->addr, da, ETHER_ADDR_LEN);
                new->next = dhdp->peer_tbl.node;
                dhdp->peer_tbl.node = new;
                dhdp->peer_tbl.tdls_peer_count++;

        } else {
                while (cur != NULL) {
                        if (!memcmp(da, cur->addr, ETHER_ADDR_LEN)) {
                                dhd_flow_rings_delete_for_peer(dhdp, ifidx, da);
                                if (prev)
                                        prev->next = cur->next;
                                else
                                        dhdp->peer_tbl.node = cur->next;
                                MFREE(dhdp->osh, cur, sizeof(tdls_peer_node_t));
                                dhdp->peer_tbl.tdls_peer_count--;
                                return;
                        }
                        prev = cur;
                        cur = cur->next;
                }
                DHD_ERROR(("%s: TDLS Peer Entry Not found\n", __FUNCTION__));
        }
}
#endif /* PCIE_FULL_DONGLE */
#endif 

bool dhd_is_concurrent_mode(dhd_pub_t *dhd)
{
        if (!dhd)
                return FALSE;

        if (dhd->op_mode & DHD_FLAG_CONCURR_MULTI_CHAN_MODE)
                return TRUE;
        else if ((dhd->op_mode & DHD_FLAG_CONCURR_SINGLE_CHAN_MODE) ==
                DHD_FLAG_CONCURR_SINGLE_CHAN_MODE)
                return TRUE;
        else
                return FALSE;
}
#if !defined(AP) && defined(WLP2P)
/* From Android JerryBean release, the concurrent mode is enabled by default and the firmware
 * name would be fw_bcmdhd.bin. So we need to determine whether P2P is enabled in the STA
 * firmware and accordingly enable concurrent mode (Apply P2P settings). SoftAP firmware
 * would still be named as fw_bcmdhd_apsta.
 */
uint32
dhd_get_concurrent_capabilites(dhd_pub_t *dhd)
{
        int32 ret = 0;
        char buf[WLC_IOCTL_SMLEN];
        bool mchan_supported = FALSE;
        /* if dhd->op_mode is already set for HOSTAP and Manufacturing
         * test mode, that means we only will use the mode as it is
         */
        if (dhd->op_mode & (DHD_FLAG_HOSTAP_MODE | DHD_FLAG_MFG_MODE))
                return 0;
        if (FW_SUPPORTED(dhd, vsdb)) {
                mchan_supported = TRUE;
        }
        if (!FW_SUPPORTED(dhd, p2p)) {
                DHD_TRACE(("Chip does not support p2p\n"));
                return 0;
        } else {
                /* Chip supports p2p but ensure that p2p is really implemented in firmware or not */
                memset(buf, 0, sizeof(buf));
                bcm_mkiovar("p2p", 0, 0, buf, sizeof(buf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, buf, sizeof(buf),
                        FALSE, 0)) < 0) {
                        DHD_ERROR(("%s: Get P2P failed (error=%d)\n", __FUNCTION__, ret));
                        return 0;
                } else {
                        if (buf[0] == 1) {
                                /* By default, chip supports single chan concurrency,
                                * now lets check for mchan
                                */
                                ret = DHD_FLAG_CONCURR_SINGLE_CHAN_MODE;
                                if (mchan_supported)
                                        ret |= DHD_FLAG_CONCURR_MULTI_CHAN_MODE;
                                if (FW_SUPPORTED(dhd, rsdb)) {
                                        ret |= DHD_FLAG_RSDB_MODE;
                                }
                                if (FW_SUPPORTED(dhd, mp2p)) {
                                        ret |= DHD_FLAG_MP2P_MODE;
                                }
#if defined(WL_ENABLE_P2P_IF) || defined(WL_CFG80211_P2P_DEV_IF)
                                return ret;
#else
                                return 0;
#endif /* WL_ENABLE_P2P_IF || WL_CFG80211_P2P_DEV_IF */
                        }
                }
        }
        return 0;
}
#endif 

#ifdef SUPPORT_AP_POWERSAVE
#define RXCHAIN_PWRSAVE_PPS                     10
#define RXCHAIN_PWRSAVE_QUIET_TIME              10
#define RXCHAIN_PWRSAVE_STAS_ASSOC_CHECK        0
int dhd_set_ap_powersave(dhd_pub_t *dhdp, int ifidx, int enable)
{
        char iovbuf[128];
        int32 pps = RXCHAIN_PWRSAVE_PPS;
        int32 quiet_time = RXCHAIN_PWRSAVE_QUIET_TIME;
        int32 stas_assoc_check = RXCHAIN_PWRSAVE_STAS_ASSOC_CHECK;

        if (enable) {
                bcm_mkiovar("rxchain_pwrsave_enable", (char *)&enable, 4, iovbuf, sizeof(iovbuf));
                if (dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR,
                    iovbuf, sizeof(iovbuf), TRUE, 0) != BCME_OK) {
                        DHD_ERROR(("Failed to enable AP power save\n"));
                }
                bcm_mkiovar("rxchain_pwrsave_pps", (char *)&pps, 4, iovbuf, sizeof(iovbuf));
                if (dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR,
                    iovbuf, sizeof(iovbuf), TRUE, 0) != BCME_OK) {
                        DHD_ERROR(("Failed to set pps\n"));
                }
                bcm_mkiovar("rxchain_pwrsave_quiet_time", (char *)&quiet_time,
                4, iovbuf, sizeof(iovbuf));
                if (dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR,
                    iovbuf, sizeof(iovbuf), TRUE, 0) != BCME_OK) {
                        DHD_ERROR(("Failed to set quiet time\n"));
                }
                bcm_mkiovar("rxchain_pwrsave_stas_assoc_check", (char *)&stas_assoc_check,
                4, iovbuf, sizeof(iovbuf));
                if (dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR,
                    iovbuf, sizeof(iovbuf), TRUE, 0) != BCME_OK) {
                        DHD_ERROR(("Failed to set stas assoc check\n"));
                }
        } else {
                bcm_mkiovar("rxchain_pwrsave_enable", (char *)&enable, 4, iovbuf, sizeof(iovbuf));
                if (dhd_wl_ioctl_cmd(dhdp, WLC_SET_VAR,
                    iovbuf, sizeof(iovbuf), TRUE, 0) != BCME_OK) {
                        DHD_ERROR(("Failed to disable AP power save\n"));
                }
        }

        return 0;
}
#endif /* SUPPORT_AP_POWERSAVE */


int
dhd_preinit_ioctls(dhd_pub_t *dhd)
{
        int ret = 0;
        char eventmask[WL_EVENTING_MASK_LEN];
        char iovbuf[WL_EVENTING_MASK_LEN + 12]; /*  Room for "event_msgs" + '\0' + bitvec  */
        uint32 buf_key_b4_m4 = 1;
#ifndef WL_CFG80211
        u32 up = 0;
#endif
        uint8 msglen;
        eventmsgs_ext_t *eventmask_msg = NULL;
        char* iov_buf = NULL;
        int ret2 = 0;
#if defined(CUSTOM_AMPDU_BA_WSIZE)
        uint32 ampdu_ba_wsize = 0;
#endif 
#if defined(CUSTOM_AMPDU_MPDU)
        int32 ampdu_mpdu = 0;
#endif
#if defined(CUSTOM_AMPDU_RELEASE)
        int32 ampdu_release = 0;
#endif
#if defined(CUSTOM_AMSDU_AGGSF)
        int32 amsdu_aggsf = 0;
#endif
#ifdef SUPPORT_SENSORHUB
        int32 shub_enable = 0;
#endif /* SUPPORT_SENSORHUB */
#if defined(BCMSDIO)
#ifdef PROP_TXSTATUS
        int wlfc_enable = TRUE;
#ifndef DISABLE_11N
        uint32 hostreorder = 1;
        uint wl_down = 1;
#endif /* DISABLE_11N */
#endif /* PROP_TXSTATUS */
#endif 
#ifdef PCIE_FULL_DONGLE
        uint32 wl_ap_isolate;
#endif /* PCIE_FULL_DONGLE */

#if defined(BCMSDIO)
        /* by default frame burst is enabled for PCIe and disabled for SDIO dongles */
        uint32 frameburst = 0;
#else
        uint32 frameburst = 1;
#endif /* BCMSDIO */

#ifdef DHD_ENABLE_LPC
        uint32 lpc = 1;
#endif /* DHD_ENABLE_LPC */
        uint power_mode = PM_FAST;
#if defined(BCMSDIO)
        uint32 dongle_align = DHD_SDALIGN;
        uint32 glom = CUSTOM_GLOM_SETTING;
#endif /* defined(BCMSDIO) */
#if defined(CUSTOMER_HW2) && defined(USE_WL_CREDALL)
        uint32 credall = 1;
#endif
        uint bcn_timeout = dhd->conf->bcn_timeout;
#ifdef ENABLE_BCN_LI_BCN_WAKEUP
        uint32 bcn_li_bcn = 1;
#endif /* ENABLE_BCN_LI_BCN_WAKEUP */
        uint retry_max = CUSTOM_ASSOC_RETRY_MAX;
#if defined(ARP_OFFLOAD_SUPPORT)
        int arpoe = 1;
#endif
        int scan_assoc_time = DHD_SCAN_ASSOC_ACTIVE_TIME;
        int scan_unassoc_time = DHD_SCAN_UNASSOC_ACTIVE_TIME;
        int scan_passive_time = DHD_SCAN_PASSIVE_TIME;
        char buf[WLC_IOCTL_SMLEN];
        char *ptr;
        uint32 listen_interval = CUSTOM_LISTEN_INTERVAL; /* Default Listen Interval in Beacons */
#ifdef ROAM_ENABLE
        uint roamvar = 0;
        int roam_trigger[2] = {CUSTOM_ROAM_TRIGGER_SETTING, WLC_BAND_ALL};
        int roam_scan_period[2] = {10, WLC_BAND_ALL};
        int roam_delta[2] = {CUSTOM_ROAM_DELTA_SETTING, WLC_BAND_ALL};
#ifdef FULL_ROAMING_SCAN_PERIOD_60_SEC
        int roam_fullscan_period = 60;
#else /* FULL_ROAMING_SCAN_PERIOD_60_SEC */
        int roam_fullscan_period = 120;
#endif /* FULL_ROAMING_SCAN_PERIOD_60_SEC */
#else
#ifdef DISABLE_BUILTIN_ROAM
        uint roamvar = 1;
#endif /* DISABLE_BUILTIN_ROAM */
#endif /* ROAM_ENABLE */

#if defined(SOFTAP)
        uint dtim = 1;
#endif
#if (defined(AP) && !defined(WLP2P)) || (!defined(AP) && defined(WL_CFG80211))
        uint32 mpc = 0; /* Turn MPC off for AP/APSTA mode */
        struct ether_addr p2p_ea;
#endif
#ifdef SOFTAP_UAPSD_OFF
        uint32 wme_apsd = 0;
#endif /* SOFTAP_UAPSD_OFF */
#if (defined(AP) || defined(WLP2P)) && !defined(SOFTAP_AND_GC)
        uint32 apsta = 1; /* Enable APSTA mode */
#elif defined(SOFTAP_AND_GC)
        uint32 apsta = 0;
        int ap_mode = 1;
#endif /* (defined(AP) || defined(WLP2P)) && !defined(SOFTAP_AND_GC) */
#ifdef GET_CUSTOM_MAC_ENABLE
        struct ether_addr ea_addr;
#endif /* GET_CUSTOM_MAC_ENABLE */

#ifdef DISABLE_11N
        uint32 nmode = 0;
#endif /* DISABLE_11N */

#ifdef USE_WL_TXBF
        uint32 txbf = 1;
#endif /* USE_WL_TXBF */
#if defined(PROP_TXSTATUS)
#ifdef USE_WFA_CERT_CONF
        uint32 proptx = 0;
#endif /* USE_WFA_CERT_CONF */
#endif /* PROP_TXSTATUS */
#ifdef CUSTOM_PSPRETEND_THR
        uint32 pspretend_thr = CUSTOM_PSPRETEND_THR;
#endif
        uint32 rsdb_mode = 0;
#ifdef ENABLE_TEMP_THROTTLING
        wl_temp_control_t temp_control;
#endif /* ENABLE_TEMP_THROTTLING */
#ifdef DISABLE_PRUNED_SCAN
        uint32 scan_features = 0;
#endif /* DISABLE_PRUNED_SCAN */
#ifdef CUSTOM_EVENT_PM_WAKE
        uint32 pm_awake_thresh = CUSTOM_EVENT_PM_WAKE;
#endif /* CUSTOM_EVENT_PM_WAKE */
#ifdef PKT_FILTER_SUPPORT
        dhd_pkt_filter_enable = TRUE;
#endif /* PKT_FILTER_SUPPORT */
#ifdef WLTDLS
        dhd->tdls_enable = FALSE;
        dhd_tdls_set_mode(dhd, false);
#endif /* WLTDLS */
        dhd->suspend_bcn_li_dtim = CUSTOM_SUSPEND_BCN_LI_DTIM;
        DHD_TRACE(("Enter %s\n", __FUNCTION__));

        dhd_conf_set_fw_int_cmd(dhd, "WLC_SET_BAND", WLC_SET_BAND, dhd->conf->band, 0, FALSE);
#ifdef DHDTCPACK_SUPPRESS
        printf("%s: Set tcpack_sup_mode %d\n", __FUNCTION__, dhd->conf->tcpack_sup_mode);
        dhd_tcpack_suppress_set(dhd, dhd->conf->tcpack_sup_mode);
#endif

        dhd->op_mode = 0;
#ifdef CUSTOMER_HW4_DEBUG
        if (!dhd_validate_chipid(dhd)) {
                DHD_ERROR(("%s: CONFIG_BCMXXX and CHIP ID(%x) is mismatched\n",
                        __FUNCTION__, dhd_bus_chip_id(dhd)));
#ifndef SUPPORT_MULTIPLE_CHIPS
                ret = BCME_BADARG;
                goto done;
#endif /* !SUPPORT_MULTIPLE_CHIPS */
        }
#endif /* CUSTOMER_HW4_DEBUG */
        if ((!op_mode && dhd_get_fw_mode(dhd->info) == DHD_FLAG_MFG_MODE) ||
                (op_mode == DHD_FLAG_MFG_MODE)) {
#ifdef DHD_PCIE_RUNTIMEPM
                /* Disable RuntimePM in mfg mode */
                DHD_DISABLE_RUNTIME_PM(dhd);
                DHD_ERROR(("%s : Disable RuntimePM in Manufactring Firmware\n", __FUNCTION__));
#endif /* DHD_PCIE_RUNTIME_PM */
                /* Check and adjust IOCTL response timeout for Manufactring firmware */
                dhd_os_set_ioctl_resp_timeout(MFG_IOCTL_RESP_TIMEOUT);
                DHD_ERROR(("%s : Set IOCTL response time for Manufactring Firmware\n",
                        __FUNCTION__));
        } else {
                dhd_os_set_ioctl_resp_timeout(IOCTL_RESP_TIMEOUT);
                DHD_INFO(("%s : Set IOCTL response time.\n", __FUNCTION__));
        }
#ifdef GET_CUSTOM_MAC_ENABLE
        ret = wifi_platform_get_mac_addr(dhd->info->adapter, ea_addr.octet);
        if (!ret) {
                memset(buf, 0, sizeof(buf));
                bcm_mkiovar("cur_etheraddr", (void *)&ea_addr, ETHER_ADDR_LEN, buf, sizeof(buf));
                ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, buf, sizeof(buf), TRUE, 0);
                if (ret < 0) {
                        DHD_ERROR(("%s: can't set MAC address MAC="MACDBG", error=%d\n",
                                __FUNCTION__, MAC2STRDBG(ea_addr.octet), ret));
                        ret = BCME_NOTUP;
                        goto done;
                }
                memcpy(dhd->mac.octet, ea_addr.octet, ETHER_ADDR_LEN);
        } else {
#endif /* GET_CUSTOM_MAC_ENABLE */
                /* Get the default device MAC address directly from firmware */
                memset(buf, 0, sizeof(buf));
                bcm_mkiovar("cur_etheraddr", 0, 0, buf, sizeof(buf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, buf, sizeof(buf),
                        FALSE, 0)) < 0) {
                        DHD_ERROR(("%s: can't get MAC address , error=%d\n", __FUNCTION__, ret));
                        ret = BCME_NOTUP;
                        goto done;
                }
                /* Update public MAC address after reading from Firmware */
                memcpy(dhd->mac.octet, buf, ETHER_ADDR_LEN);

#ifdef GET_CUSTOM_MAC_ENABLE
        }
#endif /* GET_CUSTOM_MAC_ENABLE */

        /* get a capabilities from firmware */
        {
                uint32 cap_buf_size = sizeof(dhd->fw_capabilities);
                memset(dhd->fw_capabilities, 0, cap_buf_size);
                bcm_mkiovar("cap", 0, 0, dhd->fw_capabilities, cap_buf_size - 1);
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, dhd->fw_capabilities,
                        (cap_buf_size - 1), FALSE, 0)) < 0)
                {
                        DHD_ERROR(("%s: Get Capability failed (error=%d)\n",
                                __FUNCTION__, ret));
                        return 0;
                }

                memmove(&dhd->fw_capabilities[1], dhd->fw_capabilities, (cap_buf_size - 1));
                dhd->fw_capabilities[0] = ' ';
                dhd->fw_capabilities[cap_buf_size - 2] = ' ';
                dhd->fw_capabilities[cap_buf_size - 1] = '\0';
        }

        if ((!op_mode && dhd_get_fw_mode(dhd->info) == DHD_FLAG_HOSTAP_MODE) ||
                (op_mode == DHD_FLAG_HOSTAP_MODE)) {
#ifdef SET_RANDOM_MAC_SOFTAP
                uint rand_mac;
#endif /* SET_RANDOM_MAC_SOFTAP */
                dhd->op_mode = DHD_FLAG_HOSTAP_MODE;
#if defined(ARP_OFFLOAD_SUPPORT)
                        arpoe = 0;
#endif
#ifdef PKT_FILTER_SUPPORT
                        dhd_pkt_filter_enable = FALSE;
#endif
#ifdef SET_RANDOM_MAC_SOFTAP
                SRANDOM32((uint)jiffies);
                rand_mac = RANDOM32();
                iovbuf[0] = (unsigned char)(vendor_oui >> 16) | 0x02;   /* local admin bit */
                iovbuf[1] = (unsigned char)(vendor_oui >> 8);
                iovbuf[2] = (unsigned char)vendor_oui;
                iovbuf[3] = (unsigned char)(rand_mac & 0x0F) | 0xF0;
                iovbuf[4] = (unsigned char)(rand_mac >> 8);
                iovbuf[5] = (unsigned char)(rand_mac >> 16);

                bcm_mkiovar("cur_etheraddr", (void *)iovbuf, ETHER_ADDR_LEN, buf, sizeof(buf));
                ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, buf, sizeof(buf), TRUE, 0);
                if (ret < 0) {
                        DHD_ERROR(("%s: can't set MAC address , error=%d\n", __FUNCTION__, ret));
                } else
                        memcpy(dhd->mac.octet, iovbuf, ETHER_ADDR_LEN);
#endif /* SET_RANDOM_MAC_SOFTAP */
#if !defined(AP) && defined(WL_CFG80211)
                /* Turn off MPC in AP mode */
                bcm_mkiovar("mpc", (char *)&mpc, 4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) {
                        DHD_ERROR(("%s mpc for HostAPD failed  %d\n", __FUNCTION__, ret));
                }
#endif
#ifdef USE_DYNAMIC_F2_BLKSIZE
                dhdsdio_func_blocksize(dhd, 2, DYNAMIC_F2_BLKSIZE_FOR_NONLEGACY);
#endif /* USE_DYNAMIC_F2_BLKSIZE */
#ifdef SUPPORT_AP_POWERSAVE
                dhd_set_ap_powersave(dhd, 0, TRUE);
#endif /* SUPPORT_AP_POWERSAVE */
#ifdef SOFTAP_UAPSD_OFF
                bcm_mkiovar("wme_apsd", (char *)&wme_apsd, 4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) {
                        DHD_ERROR(("%s: set wme_apsd 0 fail (error=%d)\n",
                                __FUNCTION__, ret));
                }
#endif /* SOFTAP_UAPSD_OFF */
        } else if ((!op_mode && dhd_get_fw_mode(dhd->info) == DHD_FLAG_MFG_MODE) ||
                (op_mode == DHD_FLAG_MFG_MODE)) {
#if defined(ARP_OFFLOAD_SUPPORT)
                arpoe = 0;
#endif /* ARP_OFFLOAD_SUPPORT */
#ifdef PKT_FILTER_SUPPORT
                dhd_pkt_filter_enable = FALSE;
#endif /* PKT_FILTER_SUPPORT */
                dhd->op_mode = DHD_FLAG_MFG_MODE;
#ifdef USE_DYNAMIC_F2_BLKSIZE
                dhdsdio_func_blocksize(dhd, 2, DYNAMIC_F2_BLKSIZE_FOR_NONLEGACY);
#endif /* USE_DYNAMIC_F2_BLKSIZE */
                if (FW_SUPPORTED(dhd, rsdb)) {
                        rsdb_mode = 0;
                        bcm_mkiovar("rsdb_mode", (char *)&rsdb_mode, 4, iovbuf, sizeof(iovbuf));
                        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR,
                                iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                                DHD_ERROR(("%s Disable rsdb_mode is failed ret= %d\n",
                                        __FUNCTION__, ret));
                        }
                }
        } else {
                uint32 concurrent_mode = 0;
                if ((!op_mode && dhd_get_fw_mode(dhd->info) == DHD_FLAG_P2P_MODE) ||
                        (op_mode == DHD_FLAG_P2P_MODE)) {
#if defined(ARP_OFFLOAD_SUPPORT)
                        arpoe = 0;
#endif
#ifdef PKT_FILTER_SUPPORT
                        dhd_pkt_filter_enable = FALSE;
#endif
                        dhd->op_mode = DHD_FLAG_P2P_MODE;
                } else if ((!op_mode && dhd_get_fw_mode(dhd->info) == DHD_FLAG_IBSS_MODE) ||
                        (op_mode == DHD_FLAG_IBSS_MODE)) {
                        dhd->op_mode = DHD_FLAG_IBSS_MODE;
                } else
                        dhd->op_mode = DHD_FLAG_STA_MODE;
#if !defined(AP) && defined(WLP2P)
                if (dhd->op_mode != DHD_FLAG_IBSS_MODE &&
                        (concurrent_mode = dhd_get_concurrent_capabilites(dhd))) {
#if defined(ARP_OFFLOAD_SUPPORT)
                        arpoe = 1;
#endif
                        dhd->op_mode |= concurrent_mode;
                }

                /* Check if we are enabling p2p */
                if (dhd->op_mode & DHD_FLAG_P2P_MODE) {
                        bcm_mkiovar("apsta", (char *)&apsta, 4, iovbuf, sizeof(iovbuf));
                        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR,
                                iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                                DHD_ERROR(("%s APSTA for P2P failed ret= %d\n", __FUNCTION__, ret));
                        }

#if defined(SOFTAP_AND_GC)
                        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_AP,
                                (char *)&ap_mode, sizeof(ap_mode), TRUE, 0)) < 0) {
                                        DHD_ERROR(("%s WLC_SET_AP failed %d\n", __FUNCTION__, ret));
                        }
#endif
                        memcpy(&p2p_ea, &dhd->mac, ETHER_ADDR_LEN);
                        ETHER_SET_LOCALADDR(&p2p_ea);
                        bcm_mkiovar("p2p_da_override", (char *)&p2p_ea,
                                ETHER_ADDR_LEN, iovbuf, sizeof(iovbuf));
                        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR,
                                iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                                DHD_ERROR(("%s p2p_da_override ret= %d\n", __FUNCTION__, ret));
                        } else {
                                DHD_INFO(("dhd_preinit_ioctls: p2p_da_override succeeded\n"));
                        }
                }
#else
                (void)concurrent_mode;
#endif 
        }

#ifdef RSDB_MODE_FROM_FILE
        (void)dhd_rsdb_mode_from_file(dhd);
#endif /* RSDB_MODE_FROM_FILE */

#ifdef DISABLE_PRUNED_SCAN
        if (FW_SUPPORTED(dhd, rsdb)) {
                memset(iovbuf, 0, sizeof(iovbuf));
                bcm_mkiovar("scan_features", (char *)&scan_features,
                        4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR,
                        iovbuf, sizeof(iovbuf), FALSE, 0)) < 0) {
                        DHD_ERROR(("%s get scan_features is failed ret=%d\n",
                                __FUNCTION__, ret));
                } else {
                        memcpy(&scan_features, iovbuf, 4);
                        scan_features &= ~RSDB_SCAN_DOWNGRADED_CH_PRUNE_ROAM;
                        memset(iovbuf, 0, sizeof(iovbuf));
                        bcm_mkiovar("scan_features", (char *)&scan_features,
                                4, iovbuf, sizeof(iovbuf));
                        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR,
                                iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                                DHD_ERROR(("%s set scan_features is failed ret=%d\n",
                                        __FUNCTION__, ret));
                        }
                }
        }
#endif /* DISABLE_PRUNED_SCAN */

        DHD_ERROR(("Firmware up: op_mode=0x%04x, MAC="MACDBG"\n",
                dhd->op_mode, MAC2STRDBG(dhd->mac.octet)));
        #if defined(RXFRAME_THREAD) && defined(RXTHREAD_ONLYSTA)
        if (dhd->op_mode == DHD_FLAG_HOSTAP_MODE)
                dhd->info->rxthread_enabled = FALSE;
        else
                dhd->info->rxthread_enabled = TRUE;
        #endif
        /* Set Country code  */
        if (dhd->dhd_cspec.ccode[0] != 0) {
                printf("Set country %s, revision %d\n", dhd->dhd_cspec.ccode, dhd->dhd_cspec.rev);
                bcm_mkiovar("country", (char *)&dhd->dhd_cspec,
                        sizeof(wl_country_t), iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0)
                        printf("%s: country code setting failed %d\n", __FUNCTION__, ret);
        } else {
                dhd_conf_set_country(dhd);
                dhd_conf_fix_country(dhd);
        }
        dhd_conf_get_country(dhd, &dhd->dhd_cspec);


        /* Set Listen Interval */
        bcm_mkiovar("assoc_listen", (char *)&listen_interval, 4, iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0)
                DHD_ERROR(("%s assoc_listen failed %d\n", __FUNCTION__, ret));

#if defined(ROAM_ENABLE) || defined(DISABLE_BUILTIN_ROAM)
#ifdef USE_WFA_CERT_CONF
        if (sec_get_param_wfa_cert(dhd, SET_PARAM_ROAMOFF, &roamvar) == BCME_OK) {
                DHD_ERROR(("%s: read roam_off param =%d\n", __FUNCTION__, roamvar));
        }
#endif /* USE_WFA_CERT_CONF */
        /* Disable built-in roaming to allowed ext supplicant to take care of roaming */
        bcm_mkiovar("roam_off", (char *)&roamvar, 4, iovbuf, sizeof(iovbuf));
        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* ROAM_ENABLE || DISABLE_BUILTIN_ROAM */
#if defined(ROAM_ENABLE)
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_ROAM_TRIGGER, roam_trigger,
                sizeof(roam_trigger), TRUE, 0)) < 0)
                DHD_ERROR(("%s: roam trigger set failed %d\n", __FUNCTION__, ret));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_ROAM_SCAN_PERIOD, roam_scan_period,
                sizeof(roam_scan_period), TRUE, 0)) < 0)
                DHD_ERROR(("%s: roam scan period set failed %d\n", __FUNCTION__, ret));
        if ((dhd_wl_ioctl_cmd(dhd, WLC_SET_ROAM_DELTA, roam_delta,
                sizeof(roam_delta), TRUE, 0)) < 0)
                DHD_ERROR(("%s: roam delta set failed %d\n", __FUNCTION__, ret));
        bcm_mkiovar("fullroamperiod", (char *)&roam_fullscan_period, 4, iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0)
                DHD_ERROR(("%s: roam fullscan period set failed %d\n", __FUNCTION__, ret));
#endif /* ROAM_ENABLE */
        dhd_conf_set_roam(dhd);

#ifdef CUSTOM_EVENT_PM_WAKE
        bcm_mkiovar("const_awake_thresh", (char *)&pm_awake_thresh, 4, iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s set const_awake_thresh failed %d\n", __FUNCTION__, ret));
        }
#endif /* CUSTOM_EVENT_PM_WAKE */
#ifdef WLTDLS
#ifdef ENABLE_TDLS_AUTO_MODE
        /* by default TDLS on and auto mode on */
        _dhd_tdls_enable(dhd, true, true, NULL);
#else
        /* by default TDLS on and auto mode off */
        _dhd_tdls_enable(dhd, true, false, NULL);
#endif /* ENABLE_TDLS_AUTO_MODE */
#endif /* WLTDLS */

#ifdef DHD_ENABLE_LPC
        /* Set lpc 1 */
        bcm_mkiovar("lpc", (char *)&lpc, 4, iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s Set lpc failed  %d\n", __FUNCTION__, ret));

                if (ret == BCME_NOTDOWN) {
                        uint wl_down = 1;
                        ret = dhd_wl_ioctl_cmd(dhd, WLC_DOWN,
                                (char *)&wl_down, sizeof(wl_down), TRUE, 0);
                        DHD_ERROR(("%s lpc fail WL_DOWN : %d, lpc = %d\n", __FUNCTION__, ret, lpc));

                        bcm_mkiovar("lpc", (char *)&lpc, 4, iovbuf, sizeof(iovbuf));
                        ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
                        DHD_ERROR(("%s Set lpc ret --> %d\n", __FUNCTION__, ret));
                }
        }
#endif /* DHD_ENABLE_LPC */
        dhd_conf_set_fw_string_cmd(dhd, "lpc", dhd->conf->lpc, 0, FALSE);

        /* Set PowerSave mode */
        if (dhd->conf->pm >= 0)
                power_mode = dhd->conf->pm;
        dhd_wl_ioctl_cmd(dhd, WLC_SET_PM, (char *)&power_mode, sizeof(power_mode), TRUE, 0);

#if defined(BCMSDIO)
        /* Match Host and Dongle rx alignment */
        bcm_mkiovar("bus:txglomalign", (char *)&dongle_align, 4, iovbuf, sizeof(iovbuf));
        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);

#if defined(CUSTOMER_HW2) && defined(USE_WL_CREDALL)
        /* enable credall to reduce the chance of no bus credit happened. */
        bcm_mkiovar("bus:credall", (char *)&credall, 4, iovbuf, sizeof(iovbuf));
        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif

#ifdef USE_WFA_CERT_CONF
        if (sec_get_param_wfa_cert(dhd, SET_PARAM_BUS_TXGLOM_MODE, &glom) == BCME_OK) {
                DHD_ERROR(("%s, read txglom param =%d\n", __FUNCTION__, glom));
        }
#endif /* USE_WFA_CERT_CONF */
        if (glom != DEFAULT_GLOM_VALUE) {
                DHD_INFO(("%s set glom=0x%X\n", __FUNCTION__, glom));
                bcm_mkiovar("bus:txglom", (char *)&glom, 4, iovbuf, sizeof(iovbuf));
                dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
        }
#endif /* defined(BCMSDIO) */

        /* Setup timeout if Beacons are lost and roam is off to report link down */
        bcm_mkiovar("bcn_timeout", (char *)&bcn_timeout, 4, iovbuf, sizeof(iovbuf));
        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
        /* Setup assoc_retry_max count to reconnect target AP in dongle */
        bcm_mkiovar("assoc_retry_max", (char *)&retry_max, 4, iovbuf, sizeof(iovbuf));
        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#if defined(AP) && !defined(WLP2P)
        /* Turn off MPC in AP mode */
        bcm_mkiovar("mpc", (char *)&mpc, 4, iovbuf, sizeof(iovbuf));
        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
        bcm_mkiovar("apsta", (char *)&apsta, 4, iovbuf, sizeof(iovbuf));
        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* defined(AP) && !defined(WLP2P) */
        /*  0:HT20 in ALL, 1:HT40 in ALL, 2: HT20 in 2G HT40 in 5G */
        dhd_conf_set_fw_string_cmd(dhd, "mimo_bw_cap", dhd->conf->mimo_bw_cap, 1, TRUE);
        dhd_conf_set_fw_string_cmd(dhd, "force_wme_ac", dhd->conf->force_wme_ac, 1, FALSE);
        dhd_conf_set_fw_string_cmd(dhd, "stbc_tx", dhd->conf->stbc, 0, FALSE);
        dhd_conf_set_fw_string_cmd(dhd, "stbc_rx", dhd->conf->stbc, 0, FALSE);
        dhd_conf_set_fw_int_cmd(dhd, "WLC_SET_SRL", WLC_SET_SRL, dhd->conf->srl, 0, TRUE);
        dhd_conf_set_fw_int_cmd(dhd, "WLC_SET_LRL", WLC_SET_LRL, dhd->conf->lrl, 0, FALSE);
        dhd_conf_set_fw_int_cmd(dhd, "WLC_SET_SPECT_MANAGMENT", WLC_SET_SPECT_MANAGMENT, dhd->conf->spect, 0, FALSE);
        dhd_conf_set_fw_string_cmd(dhd, "rsdb_mode", dhd->conf->rsdb_mode, -1, TRUE);

#ifdef MIMO_ANT_SETTING
        dhd_sel_ant_from_file(dhd);
#endif /* MIMO_ANT_SETTING */

#if defined(SOFTAP)
        if (ap_fw_loaded == TRUE) {
                dhd_wl_ioctl_cmd(dhd, WLC_SET_DTIMPRD, (char *)&dtim, sizeof(dtim), TRUE, 0);
        }
#endif 

#if defined(KEEP_ALIVE)
        {
        /* Set Keep Alive : be sure to use FW with -keepalive */
        int res;

#if defined(SOFTAP)
        if (ap_fw_loaded == FALSE)
#endif 
                if (!(dhd->op_mode &
                        (DHD_FLAG_HOSTAP_MODE | DHD_FLAG_MFG_MODE))) {
                        if ((res = dhd_keep_alive_onoff(dhd)) < 0)
                                DHD_ERROR(("%s set keeplive failed %d\n",
                                __FUNCTION__, res));
                }
        }
#endif /* defined(KEEP_ALIVE) */

#ifdef USE_WL_TXBF
        bcm_mkiovar("txbf", (char *)&txbf, 4, iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s Set txbf returned (%d)\n", __FUNCTION__, ret));
        }
#endif /* USE_WL_TXBF */
        dhd_conf_set_fw_string_cmd(dhd, "txbf", dhd->conf->txbf, 0, FALSE);

#ifdef USE_WFA_CERT_CONF
#ifdef USE_WL_FRAMEBURST
         if (sec_get_param_wfa_cert(dhd, SET_PARAM_FRAMEBURST, &frameburst) == BCME_OK) {
                DHD_ERROR(("%s, read frameburst param=%d\n", __FUNCTION__, frameburst));
         }
#endif /* USE_WL_FRAMEBURST */
#ifdef DISABLE_FRAMEBURST_VSDB
        g_frameburst = frameburst;
#endif /* DISABLE_FRAMEBURST_VSDB */
#endif /* USE_WFA_CERT_CONF */
#ifdef DISABLE_WL_FRAMEBURST_SOFTAP
        /* Disable Framebursting for SofAP */
        if (dhd->op_mode & DHD_FLAG_HOSTAP_MODE) {
                frameburst = 0;
        }
#endif /* DISABLE_WL_FRAMEBURST_SOFTAP */
        /* Set frameburst to value */
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_FAKEFRAG, (char *)&frameburst,
                sizeof(frameburst), TRUE, 0)) < 0) {
                DHD_INFO(("%s frameburst not supported  %d\n", __FUNCTION__, ret));
        }
        dhd_conf_set_fw_string_cmd(dhd, "frameburst", dhd->conf->frameburst, 0, FALSE);
#if defined(CUSTOM_AMPDU_BA_WSIZE)
        /* Set ampdu ba wsize to 64 or 16 */
#ifdef CUSTOM_AMPDU_BA_WSIZE
        ampdu_ba_wsize = CUSTOM_AMPDU_BA_WSIZE;
#endif
        if (ampdu_ba_wsize != 0) {
                bcm_mkiovar("ampdu_ba_wsize", (char *)&ampdu_ba_wsize, 4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) {
                        DHD_ERROR(("%s Set ampdu_ba_wsize to %d failed  %d\n",
                                __FUNCTION__, ampdu_ba_wsize, ret));
                }
        }
#endif 
        dhd_conf_set_fw_string_cmd(dhd, "ampdu_ba_wsize", dhd->conf->ampdu_ba_wsize, 1, FALSE);

        iov_buf = (char*)kmalloc(WLC_IOCTL_SMLEN, GFP_KERNEL);
        if (iov_buf == NULL) {
                DHD_ERROR(("failed to allocate %d bytes for iov_buf\n", WLC_IOCTL_SMLEN));
                ret = BCME_NOMEM;
                goto done;
        }
#ifdef ENABLE_TEMP_THROTTLING
        if (dhd->op_mode & DHD_FLAG_STA_MODE) {
                memset(&temp_control, 0, sizeof(temp_control));
                temp_control.enable = 1;
                temp_control.control_bit = TEMP_THROTTLE_CONTROL_BIT;
                bcm_mkiovar("temp_throttle_control", (char *)&temp_control,
                                sizeof(wl_temp_control_t), iov_buf, WLC_IOCTL_SMLEN);
                ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iov_buf, WLC_IOCTL_SMLEN, TRUE, 0);
                if (ret < 0) {
                        DHD_ERROR(("%s Set temp_throttle_control to %d failed \n",
                                __FUNCTION__, ret));
                }
        }
#endif /* ENABLE_TEMP_THROTTLING */
#if defined(CUSTOM_AMPDU_MPDU)
        ampdu_mpdu = CUSTOM_AMPDU_MPDU;
        if (ampdu_mpdu != 0 && (ampdu_mpdu <= ampdu_ba_wsize)) {
                bcm_mkiovar("ampdu_mpdu", (char *)&ampdu_mpdu, 4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) {
                        DHD_ERROR(("%s Set ampdu_mpdu to %d failed  %d\n",
                                __FUNCTION__, CUSTOM_AMPDU_MPDU, ret));
                }
        }
#endif /* CUSTOM_AMPDU_MPDU */

#if defined(CUSTOM_AMPDU_RELEASE)
        ampdu_release = CUSTOM_AMPDU_RELEASE;
        if (ampdu_release != 0 && (ampdu_release <= ampdu_ba_wsize)) {
                bcm_mkiovar("ampdu_release", (char *)&ampdu_release, 4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                        sizeof(iovbuf), TRUE, 0)) < 0) {
                        DHD_ERROR(("%s Set ampdu_release to %d failed  %d\n",
                                __FUNCTION__, CUSTOM_AMPDU_RELEASE, ret));
                }
        }
#endif /* CUSTOM_AMPDU_RELEASE */

#if defined(CUSTOM_AMSDU_AGGSF)
        amsdu_aggsf = CUSTOM_AMSDU_AGGSF;
        if (amsdu_aggsf != 0) {
                bcm_mkiovar("amsdu_aggsf", (char *)&amsdu_aggsf, 4, iovbuf, sizeof(iovbuf));
                ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
                if (ret < 0) {
                        DHD_ERROR(("%s Set amsdu_aggsf to %d failed %d\n",
                                __FUNCTION__, CUSTOM_AMSDU_AGGSF, ret));
                }
        }
#endif /* CUSTOM_AMSDU_AGGSF */

#ifdef CUSTOM_PSPRETEND_THR
        /* Turn off MPC in AP mode */
        bcm_mkiovar("pspretend_threshold", (char *)&pspretend_thr, 4,
                iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s pspretend_threshold for HostAPD failed  %d\n",
                        __FUNCTION__, ret));
        }
#endif

        bcm_mkiovar("buf_key_b4_m4", (char *)&buf_key_b4_m4, 4, iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf,
                sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s buf_key_b4_m4 set failed %d\n", __FUNCTION__, ret));
        }

        /* Read event_msgs mask */
        bcm_mkiovar("event_msgs", eventmask, WL_EVENTING_MASK_LEN, iovbuf, sizeof(iovbuf));
        if ((ret  = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, iovbuf, sizeof(iovbuf), FALSE, 0)) < 0) {
                DHD_ERROR(("%s read Event mask failed %d\n", __FUNCTION__, ret));
                goto done;
        }
        bcopy(iovbuf, eventmask, WL_EVENTING_MASK_LEN);

        /* Setup event_msgs */
        setbit(eventmask, WLC_E_SET_SSID);
        setbit(eventmask, WLC_E_PRUNE);
        setbit(eventmask, WLC_E_AUTH);
        setbit(eventmask, WLC_E_AUTH_IND);
        setbit(eventmask, WLC_E_ASSOC);
        setbit(eventmask, WLC_E_REASSOC);
        setbit(eventmask, WLC_E_REASSOC_IND);
        if (!(dhd->op_mode & DHD_FLAG_IBSS_MODE))
                setbit(eventmask, WLC_E_DEAUTH);
        setbit(eventmask, WLC_E_DEAUTH_IND);
        setbit(eventmask, WLC_E_DISASSOC_IND);
        setbit(eventmask, WLC_E_DISASSOC);
        setbit(eventmask, WLC_E_JOIN);
        setbit(eventmask, WLC_E_START);
        setbit(eventmask, WLC_E_ASSOC_IND);
        setbit(eventmask, WLC_E_PSK_SUP);
        setbit(eventmask, WLC_E_LINK);
        setbit(eventmask, WLC_E_MIC_ERROR);
        setbit(eventmask, WLC_E_ASSOC_REQ_IE);
        setbit(eventmask, WLC_E_ASSOC_RESP_IE);
#ifndef WL_CFG80211
        setbit(eventmask, WLC_E_PMKID_CACHE);
        setbit(eventmask, WLC_E_TXFAIL);
#endif
        setbit(eventmask, WLC_E_JOIN_START);
//      setbit(eventmask, WLC_E_SCAN_COMPLETE); // terence 20150628: remove redundant event
#ifdef DHD_DEBUG
        setbit(eventmask, WLC_E_SCAN_CONFIRM_IND);
#endif
#ifdef WLMEDIA_HTSF
        setbit(eventmask, WLC_E_HTSFSYNC);
#endif /* WLMEDIA_HTSF */
#ifdef PNO_SUPPORT
        setbit(eventmask, WLC_E_PFN_NET_FOUND);
        setbit(eventmask, WLC_E_PFN_BEST_BATCHING);
        setbit(eventmask, WLC_E_PFN_BSSID_NET_FOUND);
        setbit(eventmask, WLC_E_PFN_BSSID_NET_LOST);
#endif /* PNO_SUPPORT */
        /* enable dongle roaming event */
        setbit(eventmask, WLC_E_ROAM);
        setbit(eventmask, WLC_E_BSSID);
#ifdef WLTDLS
        setbit(eventmask, WLC_E_TDLS_PEER_EVENT);
#endif /* WLTDLS */
#ifdef WL_CFG80211
        setbit(eventmask, WLC_E_ESCAN_RESULT);
        setbit(eventmask, WLC_E_AP_STARTED);
        if (dhd->op_mode & DHD_FLAG_P2P_MODE) {
                setbit(eventmask, WLC_E_ACTION_FRAME_RX);
                setbit(eventmask, WLC_E_P2P_DISC_LISTEN_COMPLETE);
        }
#endif /* WL_CFG80211 */

#if defined(SHOW_LOGTRACE) && defined(LOGTRACE_FROM_FILE)
        if (dhd_logtrace_from_file(dhd)) {
                setbit(eventmask, WLC_E_TRACE);
        } else {
                clrbit(eventmask, WLC_E_TRACE);
        }
#elif defined(SHOW_LOGTRACE)
        setbit(eventmask, WLC_E_TRACE);
#else
        clrbit(eventmask, WLC_E_TRACE);
#endif /* defined(SHOW_LOGTRACE) && defined(LOGTRACE_FROM_FILE) */

        setbit(eventmask, WLC_E_CSA_COMPLETE_IND);
#ifdef DHD_LOSSLESS_ROAMING
        setbit(eventmask, WLC_E_ROAM_PREP);
#endif
#ifdef CUSTOM_EVENT_PM_WAKE
        setbit(eventmask, WLC_E_EXCESS_PM_WAKE_EVENT);
#endif /* CUSTOM_EVENT_PM_WAKE */
#if defined(PCIE_FULL_DONGLE) && defined(DHD_LOSSLESS_ROAMING)
        dhd_update_flow_prio_map(dhd, DHD_FLOW_PRIO_LLR_MAP);
#endif /* defined(PCIE_FULL_DONGLE) && defined(DHD_LOSSLESS_ROAMING) */

        /* Write updated Event mask */
        bcm_mkiovar("event_msgs", eventmask, WL_EVENTING_MASK_LEN, iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s Set Event mask failed %d\n", __FUNCTION__, ret));
                goto done;
        }

        /* make up event mask ext message iovar for event larger than 128 */
        msglen = ROUNDUP(WLC_E_LAST, NBBY)/NBBY + EVENTMSGS_EXT_STRUCT_SIZE;
        eventmask_msg = (eventmsgs_ext_t*)kmalloc(msglen, GFP_KERNEL);
        if (eventmask_msg == NULL) {
                DHD_ERROR(("failed to allocate %d bytes for event_msg_ext\n", msglen));
                ret = BCME_NOMEM;
                goto done;
        }
        bzero(eventmask_msg, msglen);
        eventmask_msg->ver = EVENTMSGS_VER;
        eventmask_msg->len = ROUNDUP(WLC_E_LAST, NBBY)/NBBY;

        /* Read event_msgs_ext mask */
        bcm_mkiovar("event_msgs_ext", (char *)eventmask_msg, msglen, iov_buf, WLC_IOCTL_SMLEN);
        ret2  = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, iov_buf, WLC_IOCTL_SMLEN, FALSE, 0);
        if (ret2 == 0) { /* event_msgs_ext must be supported */
                bcopy(iov_buf, eventmask_msg, msglen);
#ifdef GSCAN_SUPPORT
                setbit(eventmask_msg->mask, WLC_E_PFN_GSCAN_FULL_RESULT);
                setbit(eventmask_msg->mask, WLC_E_PFN_SCAN_COMPLETE);
                setbit(eventmask_msg->mask, WLC_E_PFN_SWC);
#endif /* GSCAN_SUPPORT */
#ifdef BT_WIFI_HANDOVER
                setbit(eventmask_msg->mask, WLC_E_BT_WIFI_HANDOVER_REQ);
#endif /* BT_WIFI_HANDOVER */

                /* Write updated Event mask */
                eventmask_msg->ver = EVENTMSGS_VER;
                eventmask_msg->command = EVENTMSGS_SET_MASK;
                eventmask_msg->len = ROUNDUP(WLC_E_LAST, NBBY)/NBBY;
                bcm_mkiovar("event_msgs_ext", (char *)eventmask_msg,
                        msglen, iov_buf, WLC_IOCTL_SMLEN);
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR,
                        iov_buf, WLC_IOCTL_SMLEN, TRUE, 0)) < 0) {
                        DHD_ERROR(("%s write event mask ext failed %d\n", __FUNCTION__, ret));
                        goto done;
                }
        } else if (ret2 == BCME_UNSUPPORTED || ret2 == BCME_VERSION) {
                /* Skip for BCME_UNSUPPORTED or BCME_VERSION */
                DHD_ERROR(("%s event_msgs_ext not support or version mismatch %d\n",
                        __FUNCTION__, ret2));
        } else {
                DHD_ERROR(("%s read event mask ext failed %d\n", __FUNCTION__, ret2));
                ret = ret2;
                goto done;
        }

        dhd_wl_ioctl_cmd(dhd, WLC_SET_SCAN_CHANNEL_TIME, (char *)&scan_assoc_time,
                sizeof(scan_assoc_time), TRUE, 0);
        dhd_wl_ioctl_cmd(dhd, WLC_SET_SCAN_UNASSOC_TIME, (char *)&scan_unassoc_time,
                sizeof(scan_unassoc_time), TRUE, 0);
        dhd_wl_ioctl_cmd(dhd, WLC_SET_SCAN_PASSIVE_TIME, (char *)&scan_passive_time,
                sizeof(scan_passive_time), TRUE, 0);

#ifdef ARP_OFFLOAD_SUPPORT
        /* Set and enable ARP offload feature for STA only  */
#if defined(SOFTAP)
        if (arpoe && !ap_fw_loaded)
#else
        if (arpoe)
#endif
        {
                dhd_arp_offload_enable(dhd, TRUE);
                dhd_arp_offload_set(dhd, dhd_arp_mode);
        } else {
                dhd_arp_offload_enable(dhd, FALSE);
                dhd_arp_offload_set(dhd, 0);
        }
        dhd_arp_enable = arpoe;
#endif /* ARP_OFFLOAD_SUPPORT */

#ifdef PKT_FILTER_SUPPORT
        /* Setup default defintions for pktfilter , enable in suspend */
        if (dhd_master_mode) {
                dhd->pktfilter_count = 6;
                dhd->pktfilter[DHD_BROADCAST_FILTER_NUM] = NULL;
                dhd->pktfilter[DHD_MULTICAST4_FILTER_NUM] = NULL;
                dhd->pktfilter[DHD_MULTICAST6_FILTER_NUM] = NULL;
                /* apply APP pktfilter */
                dhd->pktfilter[DHD_ARP_FILTER_NUM] = "105 0 0 12 0xFFFF 0x0806";

                /* Setup filter to allow only unicast */
                dhd->pktfilter[DHD_UNICAST_FILTER_NUM] = "100 0 0 0 0x01 0x00";

                /* Add filter to pass multicastDNS packet and NOT filter out as Broadcast */
                dhd->pktfilter[DHD_MDNS_FILTER_NUM] = NULL;

#ifdef GAN_LITE_NAT_KEEPALIVE_FILTER
                dhd->pktfilter_count = 4;
                /* Setup filter to block broadcast and NAT Keepalive packets */
                /* discard all broadcast packets */
                dhd->pktfilter[DHD_UNICAST_FILTER_NUM] = "100 0 0 0 0xffffff 0xffffff";
                /* discard NAT Keepalive packets */
                dhd->pktfilter[DHD_BROADCAST_FILTER_NUM] = "102 0 0 36 0xffffffff 0x11940009";
                /* discard NAT Keepalive packets */
                dhd->pktfilter[DHD_MULTICAST4_FILTER_NUM] = "104 0 0 38 0xffffffff 0x11940009";
                dhd->pktfilter[DHD_MULTICAST6_FILTER_NUM] = NULL;
#endif /* GAN_LITE_NAT_KEEPALIVE_FILTER */
        } else
                dhd_conf_discard_pkt_filter(dhd);
        dhd_conf_add_pkt_filter(dhd);

#if defined(SOFTAP)
        if (ap_fw_loaded) {
                dhd_enable_packet_filter(0, dhd);
        }
#endif /* defined(SOFTAP) */
        dhd_set_packet_filter(dhd);
#endif /* PKT_FILTER_SUPPORT */
#ifdef DISABLE_11N
        bcm_mkiovar("nmode", (char *)&nmode, 4, iovbuf, sizeof(iovbuf));
        if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0)
                DHD_ERROR(("%s wl nmode 0 failed %d\n", __FUNCTION__, ret));
#endif /* DISABLE_11N */

#ifdef ENABLE_BCN_LI_BCN_WAKEUP
        bcm_mkiovar("bcn_li_bcn", (char *)&bcn_li_bcn, 4, iovbuf, sizeof(iovbuf));
        dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
#endif /* ENABLE_BCN_LI_BCN_WAKEUP */
        /* query for 'ver' to get version info from firmware */
        memset(buf, 0, sizeof(buf));
        ptr = buf;
        bcm_mkiovar("ver", (char *)&buf, 4, buf, sizeof(buf));
        if ((ret  = dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, buf, sizeof(buf), FALSE, 0)) < 0)
                DHD_ERROR(("%s failed %d\n", __FUNCTION__, ret));
        else {
                bcmstrtok(&ptr, "\n", 0);
                /* Print fw version info */
                DHD_ERROR(("Firmware version = %s\n", buf));
                strncpy(fw_version, buf, FW_VER_STR_LEN);
                dhd_set_version_info(dhd, buf);
#ifdef WRITE_WLANINFO
                sec_save_wlinfo(buf, EPI_VERSION_STR, dhd->info->nv_path);
#endif /* WRITE_WLANINFO */
        }

#if defined(BCMSDIO)
        dhd_txglom_enable(dhd, dhd->conf->bus_rxglom);
        // terence 20151210: set bus:txglom after dhd_txglom_enable since it's possible changed in dhd_conf_set_txglom_params
        dhd_conf_set_fw_string_cmd(dhd, "bus:txglom", dhd->conf->bus_txglom, 1, FALSE);
#endif /* defined(BCMSDIO) */

        dhd_conf_set_disable_proptx(dhd);
#if defined(BCMSDIO)
#ifdef PROP_TXSTATUS
        if (disable_proptx ||
#ifdef PROP_TXSTATUS_VSDB
                /* enable WLFC only if the firmware is VSDB when it is in STA mode */
                (dhd->op_mode != DHD_FLAG_HOSTAP_MODE &&
                 dhd->op_mode != DHD_FLAG_IBSS_MODE) ||
#endif /* PROP_TXSTATUS_VSDB */
                FALSE) {
                wlfc_enable = FALSE;
        }

#ifdef USE_WFA_CERT_CONF
        if (sec_get_param_wfa_cert(dhd, SET_PARAM_PROPTX, &proptx) == BCME_OK) {
                DHD_ERROR(("%s , read proptx param=%d\n", __FUNCTION__, proptx));
                wlfc_enable = proptx;
        }
#endif /* USE_WFA_CERT_CONF */

#ifndef DISABLE_11N
        ret = dhd_wl_ioctl_cmd(dhd, WLC_DOWN, (char *)&wl_down, sizeof(wl_down), TRUE, 0);
        bcm_mkiovar("ampdu_hostreorder", (char *)&hostreorder, 4, iovbuf, sizeof(iovbuf));
        if ((ret2 = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0) {
                DHD_ERROR(("%s wl ampdu_hostreorder failed %d\n", __FUNCTION__, ret2));
                if (ret2 != BCME_UNSUPPORTED)
                        ret = ret2;

                if (ret == BCME_NOTDOWN) {
                        uint wl_down = 1;
                        ret2 = dhd_wl_ioctl_cmd(dhd, WLC_DOWN, (char *)&wl_down,
                                sizeof(wl_down), TRUE, 0);
                        DHD_ERROR(("%s ampdu_hostreorder fail WL_DOWN : %d, hostreorder :%d\n",
                                __FUNCTION__, ret2, hostreorder));

                        bcm_mkiovar("ampdu_hostreorder", (char *)&hostreorder, 4,
                                iovbuf, sizeof(iovbuf));
                        ret2 = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0);
                        DHD_ERROR(("%s wl ampdu_hostreorder. ret --> %d\n", __FUNCTION__, ret2));
                        if (ret2 != BCME_UNSUPPORTED)
                                        ret = ret2;
                }
                if (ret2 != BCME_OK)
                        hostreorder = 0;
        }
#endif /* DISABLE_11N */


        if (wlfc_enable)
                dhd_wlfc_init(dhd);
#ifndef DISABLE_11N
        else if (hostreorder)
                dhd_wlfc_hostreorder_init(dhd);
#endif /* DISABLE_11N */

#endif /* PROP_TXSTATUS */
#endif /* BCMSDIO || BCMBUS */
#ifdef PCIE_FULL_DONGLE
        /* For FD we need all the packets at DHD to handle intra-BSS forwarding */
        if (FW_SUPPORTED(dhd, ap)) {
                wl_ap_isolate = AP_ISOLATE_SENDUP_ALL;
                bcm_mkiovar("ap_isolate", (char *)&wl_ap_isolate, 4, iovbuf, sizeof(iovbuf));
                if ((ret = dhd_wl_ioctl_cmd(dhd, WLC_SET_VAR, iovbuf, sizeof(iovbuf), TRUE, 0)) < 0)
                        DHD_ERROR(("%s failed %d\n", __FUNCTION__, ret));
        }
#endif /* PCIE_FULL_DONGLE */
#ifdef PNO_SUPPORT
        if (!dhd->pno_state) {
                dhd_pno_init(dhd);
        }
#endif
#ifdef WL11U
        dhd_interworking_enable(dhd);
#endif /* WL11U */
#ifndef WL_CFG80211
        dhd_wl_ioctl_cmd(dhd, WLC_UP, (char *)&up, sizeof(up), TRUE, 0);
#endif

#ifdef SUPPORT_SENSORHUB
        bcm_mkiovar("shub", (char *)&shub_enable, 4, iovbuf, sizeof(iovbuf));
        if ((dhd_wl_ioctl_cmd(dhd, WLC_GET_VAR, iovbuf, sizeof(iovbuf),
                FALSE, 0)) < 0) {
                DHD_ERROR(("%s failed to get shub hub enable information %d\n",
                        __FUNCTION__, ret));
                dhd->info->shub_enable = 0;
        } else {
                memcpy(&shub_enable, iovbuf, sizeof(uint32));
                dhd->info->shub_enable = shub_enable;
                DHD_ERROR(("%s: checking sensorhub enable %d\n",
                        __FUNCTION__, dhd->info->shub_enable));
        }
#endif /* SUPPORT_SENSORHUB */
done:

        if (eventmask_msg)
                kfree(eventmask_msg);
        if (iov_buf)
                kfree(iov_buf);

        return ret;
}


int
dhd_iovar(dhd_pub_t *pub, int ifidx, char *name, char *cmd_buf, uint cmd_len, int set)
{
        char buf[strlen(name) + 1 + cmd_len];
        int len = sizeof(buf);
        wl_ioctl_t ioc;
        int ret;

        len = bcm_mkiovar(name, cmd_buf, cmd_len, buf, len);

        memset(&ioc, 0, sizeof(ioc));

        ioc.cmd = set? WLC_SET_VAR : WLC_GET_VAR;
        ioc.buf = buf;
        ioc.len = len;
        ioc.set = set;

        ret = dhd_wl_ioctl(pub, ifidx, &ioc, ioc.buf, ioc.len);
        if (!set && ret >= 0)
                memcpy(cmd_buf, buf, cmd_len);

        return ret;
}

int dhd_change_mtu(dhd_pub_t *dhdp, int new_mtu, int ifidx)
{
        struct dhd_info *dhd = dhdp->info;
        struct net_device *dev = NULL;

        ASSERT(dhd && dhd->iflist[ifidx]);
        dev = dhd->iflist[ifidx]->net;
        ASSERT(dev);

        if (netif_running(dev)) {
                DHD_ERROR(("%s: Must be down to change its MTU\n", dev->name));
                return BCME_NOTDOWN;
        }

#define DHD_MIN_MTU 1500
#define DHD_MAX_MTU 1752

        if ((new_mtu < DHD_MIN_MTU) || (new_mtu > DHD_MAX_MTU)) {
                DHD_ERROR(("%s: MTU size %d is invalid.\n", __FUNCTION__, new_mtu));
                return BCME_BADARG;
        }

        dev->mtu = new_mtu;
        return 0;
}

#ifdef ARP_OFFLOAD_SUPPORT
/* add or remove AOE host ip(s) (up to 8 IPs on the interface)  */
void
aoe_update_host_ipv4_table(dhd_pub_t *dhd_pub, u32 ipa, bool add, int idx)
{
        u32 ipv4_buf[MAX_IPV4_ENTRIES]; /* temp save for AOE host_ip table */
        int i;
        int ret;

        bzero(ipv4_buf, sizeof(ipv4_buf));

        /* display what we've got */
        ret = dhd_arp_get_arp_hostip_table(dhd_pub, ipv4_buf, sizeof(ipv4_buf), idx);
        DHD_ARPOE(("%s: hostip table read from Dongle:\n", __FUNCTION__));
#ifdef AOE_DBG
        dhd_print_buf(ipv4_buf, 32, 4); /* max 8 IPs 4b each */
#endif
        /* now we saved hoste_ip table, clr it in the dongle AOE */
        dhd_aoe_hostip_clr(dhd_pub, idx);

        if (ret) {
                DHD_ERROR(("%s failed\n", __FUNCTION__));
                return;
        }

        for (i = 0; i < MAX_IPV4_ENTRIES; i++) {
                if (add && (ipv4_buf[i] == 0)) {
                                ipv4_buf[i] = ipa;
                                add = FALSE; /* added ipa to local table  */
                                DHD_ARPOE(("%s: Saved new IP in temp arp_hostip[%d]\n",
                                __FUNCTION__, i));
                } else if (ipv4_buf[i] == ipa) {
                        ipv4_buf[i]     = 0;
                        DHD_ARPOE(("%s: removed IP:%x from temp table %d\n",
                                __FUNCTION__, ipa, i));
                }

                if (ipv4_buf[i] != 0) {
                        /* add back host_ip entries from our local cache */
                        dhd_arp_offload_add_ip(dhd_pub, ipv4_buf[i], idx);
                        DHD_ARPOE(("%s: added IP:%x to dongle arp_hostip[%d]\n\n",
                                __FUNCTION__, ipv4_buf[i], i));
                }
        }
#ifdef AOE_DBG
        /* see the resulting hostip table */
        dhd_arp_get_arp_hostip_table(dhd_pub, ipv4_buf, sizeof(ipv4_buf), idx);
        DHD_ARPOE(("%s: read back arp_hostip table:\n", __FUNCTION__));
        dhd_print_buf(ipv4_buf, 32, 4); /* max 8 IPs 4b each */
#endif
}

/*
 * Notification mechanism from kernel to our driver. This function is called by the Linux kernel
 * whenever there is an event related to an IP address.
 * ptr : kernel provided pointer to IP address that has changed
 */
static int dhd_inetaddr_notifier_call(struct notifier_block *this,
        unsigned long event,
        void *ptr)
{
        struct in_ifaddr *ifa = (struct in_ifaddr *)ptr;

        dhd_info_t *dhd;
        dhd_pub_t *dhd_pub;
        int idx;

        if (!dhd_arp_enable)
                return NOTIFY_DONE;
        if (!ifa || !(ifa->ifa_dev->dev))
                return NOTIFY_DONE;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 31))
        /* Filter notifications meant for non Broadcom devices */
        if ((ifa->ifa_dev->dev->netdev_ops != &dhd_ops_pri) &&
            (ifa->ifa_dev->dev->netdev_ops != &dhd_ops_virt)) {
#if defined(WL_ENABLE_P2P_IF)
                if (!wl_cfgp2p_is_ifops(ifa->ifa_dev->dev->netdev_ops))
#endif /* WL_ENABLE_P2P_IF */
                        return NOTIFY_DONE;
        }
#endif /* LINUX_VERSION_CODE */

        dhd = DHD_DEV_INFO(ifa->ifa_dev->dev);
        if (!dhd)
                return NOTIFY_DONE;

        dhd_pub = &dhd->pub;

        if (dhd_pub->arp_version == 1) {
                idx = 0;
        } else {
                for (idx = 0; idx < DHD_MAX_IFS; idx++) {
                        if (dhd->iflist[idx] && dhd->iflist[idx]->net == ifa->ifa_dev->dev)
                        break;
                }
                if (idx < DHD_MAX_IFS) {
                        DHD_TRACE(("ifidx : %p %s %d\n", dhd->iflist[idx]->net,
                                dhd->iflist[idx]->name, dhd->iflist[idx]->idx));
                } else {
                        DHD_ERROR(("Cannot find ifidx for(%s) set to 0\n", ifa->ifa_label));
                        idx = 0;
                }
        }

        switch (event) {
                case NETDEV_UP:
                        DHD_ARPOE(("%s: [%s] Up IP: 0x%x\n",
                                __FUNCTION__, ifa->ifa_label, ifa->ifa_address));

                        if (dhd->pub.busstate != DHD_BUS_DATA) {
                                DHD_ERROR(("%s: bus not ready, exit\n", __FUNCTION__));
                                if (dhd->pend_ipaddr) {
                                        DHD_ERROR(("%s: overwrite pending ipaddr: 0x%x\n",
                                                __FUNCTION__, dhd->pend_ipaddr));
                                }
                                dhd->pend_ipaddr = ifa->ifa_address;
                                break;
                        }

#ifdef AOE_IP_ALIAS_SUPPORT
                        DHD_ARPOE(("%s:add aliased IP to AOE hostip cache\n",
                                __FUNCTION__));
                        aoe_update_host_ipv4_table(dhd_pub, ifa->ifa_address, TRUE, idx);
#endif /* AOE_IP_ALIAS_SUPPORT */
                        break;

                case NETDEV_DOWN:
                        DHD_ARPOE(("%s: [%s] Down IP: 0x%x\n",
                                __FUNCTION__, ifa->ifa_label, ifa->ifa_address));
                        dhd->pend_ipaddr = 0;
#ifdef AOE_IP_ALIAS_SUPPORT
                        DHD_ARPOE(("%s:interface is down, AOE clr all for this if\n",
                                __FUNCTION__));
                        aoe_update_host_ipv4_table(dhd_pub, ifa->ifa_address, FALSE, idx);
#else
                        dhd_aoe_hostip_clr(&dhd->pub, idx);
                        dhd_aoe_arp_clr(&dhd->pub, idx);
#endif /* AOE_IP_ALIAS_SUPPORT */
                        break;

                default:
                        DHD_ARPOE(("%s: do noting for [%s] Event: %lu\n",
                                __func__, ifa->ifa_label, event));
                        break;
        }
        return NOTIFY_DONE;
}
#endif /* ARP_OFFLOAD_SUPPORT */

#if defined(CONFIG_IPV6) && defined(IPV6_NDO_SUPPORT)
/* Neighbor Discovery Offload: defered handler */
static void
dhd_inet6_work_handler(void *dhd_info, void *event_data, u8 event)
{
        struct ipv6_work_info_t *ndo_work = (struct ipv6_work_info_t *)event_data;
        dhd_pub_t       *pub = &((dhd_info_t *)dhd_info)->pub;
        int             ret;

        if (event != DHD_WQ_WORK_IPV6_NDO) {
                DHD_ERROR(("%s: unexpected event \n", __FUNCTION__));
                return;
        }

        if (!ndo_work) {
                DHD_ERROR(("%s: ipv6 work info is not initialized \n", __FUNCTION__));
                return;
        }

        if (!pub) {
                DHD_ERROR(("%s: dhd pub is not initialized \n", __FUNCTION__));
                return;
        }

        if (ndo_work->if_idx) {
                DHD_ERROR(("%s: idx %d \n", __FUNCTION__, ndo_work->if_idx));
                return;
        }

        switch (ndo_work->event) {
                case NETDEV_UP:
                        DHD_TRACE(("%s: Enable NDO and add ipv6 into table \n ", __FUNCTION__));
                        ret = dhd_ndo_enable(pub, TRUE);
                        if (ret < 0) {
                                DHD_ERROR(("%s: Enabling NDO Failed %d\n", __FUNCTION__, ret));
                        }

                        ret = dhd_ndo_add_ip(pub, &ndo_work->ipv6_addr[0], ndo_work->if_idx);
                        if (ret < 0) {
                                DHD_ERROR(("%s: Adding host ip for NDO failed %d\n",
                                        __FUNCTION__, ret));
                        }
                        break;
                case NETDEV_DOWN:
                        DHD_TRACE(("%s: clear ipv6 table \n", __FUNCTION__));
                        ret = dhd_ndo_remove_ip(pub, ndo_work->if_idx);
                        if (ret < 0) {
                                DHD_ERROR(("%s: Removing host ip for NDO failed %d\n",
                                        __FUNCTION__, ret));
                                goto done;
                        }

                        ret = dhd_ndo_enable(pub, FALSE);
                        if (ret < 0) {
                                DHD_ERROR(("%s: disabling NDO Failed %d\n", __FUNCTION__, ret));
                                goto done;
                        }
                        break;
                default:
                        DHD_ERROR(("%s: unknown notifier event \n", __FUNCTION__));
                        break;
        }
done:
        /* free ndo_work. alloced while scheduling the work */
        kfree(ndo_work);

        return;
}

/*
 * Neighbor Discovery Offload: Called when an interface
 * is assigned with ipv6 address.
 * Handles only primary interface
 */
static int dhd_inet6addr_notifier_call(struct notifier_block *this,
        unsigned long event,
        void *ptr)
{
        dhd_info_t *dhd;
        dhd_pub_t *dhd_pub;
        struct inet6_ifaddr *inet6_ifa = ptr;
        struct in6_addr *ipv6_addr = &inet6_ifa->addr;
        struct ipv6_work_info_t *ndo_info;
        int idx = 0; /* REVISIT */

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 31))
        /* Filter notifications meant for non Broadcom devices */
        if (inet6_ifa->idev->dev->netdev_ops != &dhd_ops_pri) {
                        return NOTIFY_DONE;
        }
#endif /* LINUX_VERSION_CODE */

        dhd = DHD_DEV_INFO(inet6_ifa->idev->dev);
        if (!dhd)
                return NOTIFY_DONE;

        if (dhd->iflist[idx] && dhd->iflist[idx]->net != inet6_ifa->idev->dev)
                return NOTIFY_DONE;
        dhd_pub = &dhd->pub;

        if (!FW_SUPPORTED(dhd_pub, ndoe))
                return NOTIFY_DONE;

        ndo_info = (struct ipv6_work_info_t *)kzalloc(sizeof(struct ipv6_work_info_t), GFP_ATOMIC);
        if (!ndo_info) {
                DHD_ERROR(("%s: ipv6 work alloc failed\n", __FUNCTION__));
                return NOTIFY_DONE;
        }

        ndo_info->event = event;
        ndo_info->if_idx = idx;
        memcpy(&ndo_info->ipv6_addr[0], ipv6_addr, IPV6_ADDR_LEN);

        /* defer the work to thread as it may block kernel */
        dhd_deferred_schedule_work(dhd->dhd_deferred_wq, (void *)ndo_info, DHD_WQ_WORK_IPV6_NDO,
                dhd_inet6_work_handler, DHD_WORK_PRIORITY_LOW);
        return NOTIFY_DONE;
}
#endif /* CONFIG_IPV6 && IPV6_NDO_SUPPORT */

int
dhd_register_if(dhd_pub_t *dhdp, int ifidx, bool need_rtnl_lock)
{
        dhd_info_t *dhd = (dhd_info_t *)dhdp->info;
        dhd_if_t *ifp;
        struct net_device *net = NULL;
        int err = 0;
        uint8 temp_addr[ETHER_ADDR_LEN] = { 0x00, 0x90, 0x4c, 0x11, 0x22, 0x33 };

        DHD_TRACE(("%s: ifidx %d\n", __FUNCTION__, ifidx));

        ASSERT(dhd && dhd->iflist[ifidx]);
        ifp = dhd->iflist[ifidx];
        net = ifp->net;
        ASSERT(net && (ifp->idx == ifidx));

#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31))
        ASSERT(!net->open);
        net->get_stats = dhd_get_stats;
        net->do_ioctl = dhd_ioctl_entry;
        net->hard_start_xmit = dhd_start_xmit;
        net->set_mac_address = dhd_set_mac_address;
        net->set_multicast_list = dhd_set_multicast_list;
        net->open = net->stop = NULL;
#else
        ASSERT(!net->netdev_ops);
        net->netdev_ops = &dhd_ops_virt;
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31) */

        /* Ok, link into the network layer... */
        if (ifidx == 0) {
                /*
                 * device functions for the primary interface only
                 */
#if (LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31))
                net->open = dhd_open;
                net->stop = dhd_stop;
#else
                net->netdev_ops = &dhd_ops_pri;
#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31) */
                if (!ETHER_ISNULLADDR(dhd->pub.mac.octet))
                        memcpy(temp_addr, dhd->pub.mac.octet, ETHER_ADDR_LEN);
        } else {
                /*
                 * We have to use the primary MAC for virtual interfaces
                 */
                memcpy(temp_addr, ifp->mac_addr, ETHER_ADDR_LEN);
                /*
                 * Android sets the locally administered bit to indicate that this is a
                 * portable hotspot.  This will not work in simultaneous AP/STA mode,
                 * nor with P2P.  Need to set the Donlge's MAC address, and then use that.
                 */
                if (!memcmp(temp_addr, dhd->iflist[0]->mac_addr,
                        ETHER_ADDR_LEN)) {
                        DHD_ERROR(("%s interface [%s]: set locally administered bit in MAC\n",
                        __func__, net->name));
                        temp_addr[0] |= 0x02;
                }
        }

        net->hard_header_len = ETH_HLEN + dhd->pub.hdrlen;
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24)
        net->ethtool_ops = &dhd_ethtool_ops;
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 24) */

#if defined(WL_WIRELESS_EXT)
#if WIRELESS_EXT < 19
        net->get_wireless_stats = dhd_get_wireless_stats;
#endif /* WIRELESS_EXT < 19 */
#if WIRELESS_EXT > 12
        net->wireless_handlers = (struct iw_handler_def *)&wl_iw_handler_def;
#endif /* WIRELESS_EXT > 12 */
#endif /* defined(WL_WIRELESS_EXT) */

        dhd->pub.rxsz = DBUS_RX_BUFFER_SIZE_DHD(net);

        memcpy(net->dev_addr, temp_addr, ETHER_ADDR_LEN);

        if (ifidx == 0)
                printf("%s\n", dhd_version);

        if (need_rtnl_lock)
                err = register_netdev(net);
        else
                err = register_netdevice(net);

        if (err != 0) {
                DHD_ERROR(("couldn't register the net device [%s], err %d\n", net->name, err));
                goto fail;
        }



        printf("Register interface [%s]  MAC: "MACDBG"\n\n", net->name,
#if defined(CUSTOMER_HW4_DEBUG)
                MAC2STRDBG(dhd->pub.mac.octet));
#else
                MAC2STRDBG(net->dev_addr));
#endif /* CUSTOMER_HW4_DEBUG */

#if defined(SOFTAP) && defined(WL_WIRELESS_EXT) && !defined(WL_CFG80211)
//              wl_iw_iscan_set_scan_broadcast_prep(net, 1);
#endif

#if (defined(BCMPCIE) || (defined(BCMLXSDMMC) && (LINUX_VERSION_CODE >= \
        KERNEL_VERSION(2, 6, 27))))
        if (ifidx == 0) {
#ifdef BCMLXSDMMC
                up(&dhd_registration_sem);
#endif /* BCMLXSDMMC */
                if (!dhd_download_fw_on_driverload) {
#ifdef WL_CFG80211
                        wl_terminate_event_handler();
#endif /* WL_CFG80211 */
#if defined(DHD_LB) && defined(DHD_LB_RXP)
                        __skb_queue_purge(&dhd->rx_pend_queue);
#endif /* DHD_LB && DHD_LB_RXP */
#if defined(BCMPCIE) && defined(DHDTCPACK_SUPPRESS)
                        dhd_tcpack_suppress_set(dhdp, TCPACK_SUP_OFF);
#endif /* BCMPCIE && DHDTCPACK_SUPPRESS */
                        dhd_net_bus_devreset(net, TRUE);
#ifdef BCMLXSDMMC
                        dhd_net_bus_suspend(net);
#endif /* BCMLXSDMMC */
                        wifi_platform_set_power(dhdp->info->adapter, FALSE, WIFI_TURNOFF_DELAY);
                }
        }
#endif /* OEM_ANDROID && (BCMPCIE || (BCMLXSDMMC && KERNEL_VERSION >= 2.6.27)) */
        return 0;

fail:
#if LINUX_VERSION_CODE < KERNEL_VERSION(2, 6, 31)
        net->open = NULL;
#else
        net->netdev_ops = NULL;
#endif
        return err;
}

void
dhd_bus_detach(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd;

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        if (dhdp) {
                dhd = (dhd_info_t *)dhdp->info;
                if (dhd) {

                        /*
                         * In case of Android cfg80211 driver, the bus is down in dhd_stop,
                         *  calling stop again will cuase SD read/write errors.
                         */
                        if (dhd->pub.busstate != DHD_BUS_DOWN) {
                                /* Stop the protocol module */
                                dhd_prot_stop(&dhd->pub);

                                /* Stop the bus module */
                                dhd_bus_stop(dhd->pub.bus, TRUE);
                        }

#if defined(OOB_INTR_ONLY) || defined(BCMPCIE_OOB_HOST_WAKE)
                        dhd_bus_oob_intr_unregister(dhdp);
#endif 
                }
        }
}


void dhd_detach(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd;
        unsigned long flags;
        int timer_valid = FALSE;
        struct net_device *dev;

        if (!dhdp)
                return;

        dhd = (dhd_info_t *)dhdp->info;
        if (!dhd)
                return;

        dev = dhd->iflist[0]->net;

        if (dev) {
                rtnl_lock();
                if (dev->flags & IFF_UP) {
                        /* If IFF_UP is still up, it indicates that
                         * "ifconfig wlan0 down" hasn't been called.
                         * So invoke dev_close explicitly here to
                         * bring down the interface.
                         */
                        DHD_TRACE(("IFF_UP flag is up. Enforcing dev_close from detach \n"));
                        dev_close(dev);
                }
                rtnl_unlock();
        }

        DHD_TRACE(("%s: Enter state 0x%x\n", __FUNCTION__, dhd->dhd_state));

        dhd->pub.up = 0;
        if (!(dhd->dhd_state & DHD_ATTACH_STATE_DONE)) {
                /* Give sufficient time for threads to start running in case
                 * dhd_attach() has failed
                 */
                OSL_SLEEP(100);
        }

#if defined(BCM_DNGL_EMBEDIMAGE) || defined(BCM_REQUEST_FW)
#endif /* defined(BCM_DNGL_EMBEDIMAGE) || defined(BCM_REQUEST_FW) */

#ifdef PROP_TXSTATUS
#ifdef DHD_WLFC_THREAD
        if (dhd->pub.wlfc_thread) {
                kthread_stop(dhd->pub.wlfc_thread);
                dhdp->wlfc_thread_go = TRUE;
                wake_up_interruptible(&dhdp->wlfc_wqhead);
        }
        dhd->pub.wlfc_thread = NULL;
#endif /* DHD_WLFC_THREAD */
#endif /* PROP_TXSTATUS */

        if (dhd->dhd_state & DHD_ATTACH_STATE_PROT_ATTACH) {

                dhd_bus_detach(dhdp);
#ifdef BCMPCIE
                if (is_reboot == SYS_RESTART) {
                        extern bcmdhd_wifi_platdata_t *dhd_wifi_platdata;
                        if (dhd_wifi_platdata && !dhdp->dongle_reset) {
                                dhdpcie_bus_clock_stop(dhdp->bus);
                                wifi_platform_set_power(dhd_wifi_platdata->adapters,
                                        FALSE, WIFI_TURNOFF_DELAY);
                        }
                }
#endif /* BCMPCIE */
#ifndef PCIE_FULL_DONGLE
                if (dhdp->prot)
                        dhd_prot_detach(dhdp);
#endif
        }

#ifdef ARP_OFFLOAD_SUPPORT
        if (dhd_inetaddr_notifier_registered) {
                dhd_inetaddr_notifier_registered = FALSE;
                unregister_inetaddr_notifier(&dhd_inetaddr_notifier);
        }
#endif /* ARP_OFFLOAD_SUPPORT */
#if defined(CONFIG_IPV6) && defined(IPV6_NDO_SUPPORT)
        if (dhd_inet6addr_notifier_registered) {
                dhd_inet6addr_notifier_registered = FALSE;
                unregister_inet6addr_notifier(&dhd_inet6addr_notifier);
        }
#endif /* CONFIG_IPV6 && IPV6_NDO_SUPPORT */
#if defined(CONFIG_HAS_EARLYSUSPEND) && defined(DHD_USE_EARLYSUSPEND)
        if (dhd->dhd_state & DHD_ATTACH_STATE_EARLYSUSPEND_DONE) {
                if (dhd->early_suspend.suspend)
                        unregister_early_suspend(&dhd->early_suspend);
        }
#endif /* CONFIG_HAS_EARLYSUSPEND && DHD_USE_EARLYSUSPEND */

#if defined(WL_WIRELESS_EXT)
        if (dhd->dhd_state & DHD_ATTACH_STATE_WL_ATTACH) {
                /* Detatch and unlink in the iw */
                wl_iw_detach();
        }
#endif /* defined(WL_WIRELESS_EXT) */

        /* delete all interfaces, start with virtual  */
        if (dhd->dhd_state & DHD_ATTACH_STATE_ADD_IF) {
                int i = 1;
                dhd_if_t *ifp;

                /* Cleanup virtual interfaces */
                dhd_net_if_lock_local(dhd);
                for (i = 1; i < DHD_MAX_IFS; i++) {
                        if (dhd->iflist[i])
                                dhd_remove_if(&dhd->pub, i, TRUE);
                }
                dhd_net_if_unlock_local(dhd);

                /*  delete primary interface 0 */
                ifp = dhd->iflist[0];
                ASSERT(ifp);
                ASSERT(ifp->net);
                if (ifp && ifp->net) {



                        /* in unregister_netdev case, the interface gets freed by net->destructor
                         * (which is set to free_netdev)
                         */
                        if (ifp->net->reg_state == NETREG_UNINITIALIZED) {
                                free_netdev(ifp->net);
                        } else {
#ifdef SET_RPS_CPUS
                                custom_rps_map_clear(ifp->net->_rx);
#endif /* SET_RPS_CPUS */
                                netif_tx_disable(ifp->net);
                                unregister_netdev(ifp->net);
                        }
                        ifp->net = NULL;
#ifdef DHD_WMF
                        dhd_wmf_cleanup(dhdp, 0);
#endif /* DHD_WMF */
#ifdef DHD_L2_FILTER
                        bcm_l2_filter_arp_table_update(dhdp->osh, ifp->phnd_arp_table, TRUE,
                                NULL, FALSE, dhdp->tickcnt);
                        deinit_l2_filter_arp_table(dhdp->osh, ifp->phnd_arp_table);
                        ifp->phnd_arp_table = NULL;
#endif /* DHD_L2_FILTER */

                        dhd_if_del_sta_list(ifp);

                        MFREE(dhd->pub.osh, ifp, sizeof(*ifp));
                        dhd->iflist[0] = NULL;
                }
        }

        /* Clear the watchdog timer */
        DHD_GENERAL_LOCK(&dhd->pub, flags);
        timer_valid = dhd->wd_timer_valid;
        dhd->wd_timer_valid = FALSE;
        DHD_GENERAL_UNLOCK(&dhd->pub, flags);
        if (timer_valid)
                del_timer_sync(&dhd->timer);
        DHD_DISABLE_RUNTIME_PM(&dhd->pub);

        if (dhd->dhd_state & DHD_ATTACH_STATE_THREADS_CREATED) {
#ifdef DHD_PCIE_RUNTIMEPM
                if (dhd->thr_rpm_ctl.thr_pid >= 0) {
                        PROC_STOP(&dhd->thr_rpm_ctl);
                }
#endif /* DHD_PCIE_RUNTIMEPM */
                if (dhd->thr_wdt_ctl.thr_pid >= 0) {
                        PROC_STOP(&dhd->thr_wdt_ctl);
                }

                if (dhd->rxthread_enabled && dhd->thr_rxf_ctl.thr_pid >= 0) {
                        PROC_STOP(&dhd->thr_rxf_ctl);
                }

                if (dhd->thr_dpc_ctl.thr_pid >= 0) {
                        PROC_STOP(&dhd->thr_dpc_ctl);
                } else {
                        tasklet_kill(&dhd->tasklet);
#ifdef DHD_LB_RXP
                        __skb_queue_purge(&dhd->rx_pend_queue);
#endif /* DHD_LB_RXP */
                }
        }

#if defined(DHD_LB)
        /* Kill the Load Balancing Tasklets */
#if defined(DHD_LB_TXC)
        tasklet_disable(&dhd->tx_compl_tasklet);
        tasklet_kill(&dhd->tx_compl_tasklet);
#endif /* DHD_LB_TXC */
#if defined(DHD_LB_RXC)
        tasklet_disable(&dhd->rx_compl_tasklet);
        tasklet_kill(&dhd->rx_compl_tasklet);
#endif /* DHD_LB_RXC */
        if (dhd->cpu_notifier.notifier_call != NULL)
                unregister_cpu_notifier(&dhd->cpu_notifier);
        dhd_cpumasks_deinit(dhd);
#endif /* DHD_LB */

#ifdef DHD_LOG_DUMP
        dhd_log_dump_deinit(&dhd->pub);
#endif /* DHD_LOG_DUMP */
#ifdef WL_CFG80211
        if (dhd->dhd_state & DHD_ATTACH_STATE_CFG80211) {
                wl_cfg80211_detach(NULL);
                dhd_monitor_uninit();
        }
#endif
        /* free deferred work queue */
        dhd_deferred_work_deinit(dhd->dhd_deferred_wq);
        dhd->dhd_deferred_wq = NULL;

#ifdef SHOW_LOGTRACE
        if (dhd->event_data.fmts)
                kfree(dhd->event_data.fmts);
        if (dhd->event_data.raw_fmts)
                kfree(dhd->event_data.raw_fmts);
        if (dhd->event_data.raw_sstr)
                kfree(dhd->event_data.raw_sstr);
#endif /* SHOW_LOGTRACE */

#ifdef PNO_SUPPORT
        if (dhdp->pno_state)
                dhd_pno_deinit(dhdp);
#endif
#if defined(CONFIG_PM_SLEEP)
        if (dhd_pm_notifier_registered) {
                unregister_pm_notifier(&dhd->pm_notifier);
                dhd_pm_notifier_registered = FALSE;
        }
#endif /* CONFIG_PM_SLEEP */

#ifdef DEBUG_CPU_FREQ
                if (dhd->new_freq)
                        free_percpu(dhd->new_freq);
                dhd->new_freq = NULL;
                cpufreq_unregister_notifier(&dhd->freq_trans, CPUFREQ_TRANSITION_NOTIFIER);
#endif
        if (dhd->dhd_state & DHD_ATTACH_STATE_WAKELOCKS_INIT) {
                DHD_TRACE(("wd wakelock count:%d\n", dhd->wakelock_wd_counter));
#ifdef CONFIG_HAS_WAKELOCK
                dhd->wakelock_wd_counter = 0;
                wake_lock_destroy(&dhd->wl_wdwake);
#endif /* CONFIG_HAS_WAKELOCK */
                DHD_OS_WAKE_LOCK_DESTROY(dhd);
        }



#ifdef DHDTCPACK_SUPPRESS
        /* This will free all MEM allocated for TCPACK SUPPRESS */
        dhd_tcpack_suppress_set(&dhd->pub, TCPACK_SUP_OFF);
#endif /* DHDTCPACK_SUPPRESS */

#ifdef PCIE_FULL_DONGLE
                dhd_flow_rings_deinit(dhdp);
                if (dhdp->prot)
                        dhd_prot_detach(dhdp);
#endif


        dhd_sysfs_exit(dhd);
        dhd->pub.is_fw_download_done = FALSE;
        dhd_conf_detach(dhdp);
}


void
dhd_free(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd;
        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        if (dhdp) {
                int i;
                for (i = 0; i < ARRAYSIZE(dhdp->reorder_bufs); i++) {
                        if (dhdp->reorder_bufs[i]) {
                                reorder_info_t *ptr;
                                uint32 buf_size = sizeof(struct reorder_info);

                                ptr = dhdp->reorder_bufs[i];

                                buf_size += ((ptr->max_idx + 1) * sizeof(void*));
                                DHD_REORDER(("free flow id buf %d, maxidx is %d, buf_size %d\n",
                                        i, ptr->max_idx, buf_size));

                                MFREE(dhdp->osh, dhdp->reorder_bufs[i], buf_size);
                                dhdp->reorder_bufs[i] = NULL;
                        }
                }

                dhd_sta_pool_fini(dhdp, DHD_MAX_STA);

                dhd = (dhd_info_t *)dhdp->info;
                if (dhdp->soc_ram) {
#if defined(CONFIG_DHD_USE_STATIC_BUF) && defined(DHD_USE_STATIC_MEMDUMP)
                        DHD_OS_PREFREE(dhdp, dhdp->soc_ram, dhdp->soc_ram_length);
#else
                        MFREE(dhdp->osh, dhdp->soc_ram, dhdp->soc_ram_length);
#endif /* CONFIG_DHD_USE_STATIC_BUF && DHD_USE_STATIC_MEMDUMP */
                        dhdp->soc_ram = NULL;
                }
#ifdef CACHE_FW_IMAGES
                if (dhdp->cached_fw) {
                        MFREE(dhdp->osh, dhdp->cached_fw, dhdp->bus->ramsize);
                        dhdp->cached_fw = NULL;
                }

                if (dhdp->cached_nvram) {
                        MFREE(dhdp->osh, dhdp->cached_nvram, MAX_NVRAMBUF_SIZE);
                        dhdp->cached_nvram = NULL;
                }
#endif
                /* If pointer is allocated by dhd_os_prealloc then avoid MFREE */
                if (dhd &&
                        dhd != (dhd_info_t *)dhd_os_prealloc(dhdp, DHD_PREALLOC_DHD_INFO, 0, FALSE))
                        MFREE(dhd->pub.osh, dhd, sizeof(*dhd));
                dhd = NULL;
        }
}

void
dhd_clear(dhd_pub_t *dhdp)
{
        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        if (dhdp) {
                int i;
#ifdef DHDTCPACK_SUPPRESS
                /* Clean up timer/data structure for any remaining/pending packet or timer. */
                dhd_tcpack_info_tbl_clean(dhdp);
#endif /* DHDTCPACK_SUPPRESS */
                for (i = 0; i < ARRAYSIZE(dhdp->reorder_bufs); i++) {
                        if (dhdp->reorder_bufs[i]) {
                                reorder_info_t *ptr;
                                uint32 buf_size = sizeof(struct reorder_info);

                                ptr = dhdp->reorder_bufs[i];

                                buf_size += ((ptr->max_idx + 1) * sizeof(void*));
                                DHD_REORDER(("free flow id buf %d, maxidx is %d, buf_size %d\n",
                                        i, ptr->max_idx, buf_size));

                                MFREE(dhdp->osh, dhdp->reorder_bufs[i], buf_size);
                                dhdp->reorder_bufs[i] = NULL;
                        }
                }

                dhd_sta_pool_clear(dhdp, DHD_MAX_STA);

                if (dhdp->soc_ram) {
#if defined(CONFIG_DHD_USE_STATIC_BUF) && defined(DHD_USE_STATIC_MEMDUMP)
                        DHD_OS_PREFREE(dhdp, dhdp->soc_ram, dhdp->soc_ram_length);
#else
                        MFREE(dhdp->osh, dhdp->soc_ram, dhdp->soc_ram_length);
#endif /* CONFIG_DHD_USE_STATIC_BUF && DHD_USE_STATIC_MEMDUMP */
                        dhdp->soc_ram = NULL;
                }
        }
}

static void
dhd_module_cleanup(void)
{
        printf("%s: Enter\n", __FUNCTION__);

        dhd_bus_unregister();

        wl_android_exit();

        dhd_wifi_platform_unregister_drv();
        printf("%s: Exit\n", __FUNCTION__);
}

static void
dhd_module_exit(void)
{
        dhd_buzzz_detach();
        dhd_module_cleanup();
        unregister_reboot_notifier(&dhd_reboot_notifier);
}

static int
dhd_module_init(void)
{
        int err;
        int retry = 0;

        printf("%s: in\n", __FUNCTION__);

        dhd_buzzz_attach();

        DHD_PERIM_RADIO_INIT();


        if (firmware_path[0] != '\0') {
                strncpy(fw_bak_path, firmware_path, MOD_PARAM_PATHLEN);
                fw_bak_path[MOD_PARAM_PATHLEN-1] = '\0';
        }

        if (nvram_path[0] != '\0') {
                strncpy(nv_bak_path, nvram_path, MOD_PARAM_PATHLEN);
                nv_bak_path[MOD_PARAM_PATHLEN-1] = '\0';
        }

        do {
                err = dhd_wifi_platform_register_drv();
                if (!err) {
                        register_reboot_notifier(&dhd_reboot_notifier);
                        break;
                }
                else {
                        DHD_ERROR(("%s: Failed to load the driver, try cnt %d\n",
                                __FUNCTION__, retry));
                        strncpy(firmware_path, fw_bak_path, MOD_PARAM_PATHLEN);
                        firmware_path[MOD_PARAM_PATHLEN-1] = '\0';
                        strncpy(nvram_path, nv_bak_path, MOD_PARAM_PATHLEN);
                        nvram_path[MOD_PARAM_PATHLEN-1] = '\0';
                }
        } while (retry--);

        if (err) {
                DHD_ERROR(("%s: Failed to load driver max retry reached**\n", __FUNCTION__));
        } else {
                if (!dhd_download_fw_on_driverload) {
                        dhd_driver_init_done = TRUE;
                }
        }

        printf("%s: Exit err=%d\n", __FUNCTION__, err);
        return err;
}

static int
dhd_reboot_callback(struct notifier_block *this, unsigned long code, void *unused)
{
        DHD_TRACE(("%s: code = %ld\n", __FUNCTION__, code));
        if (code == SYS_RESTART) {
#ifdef BCMPCIE
                is_reboot = code;
#endif /* BCMPCIE */
        }
        return NOTIFY_DONE;
}

static int wifi_init_thread(void *data)
{
        dhd_module_init();

        return 0;
}

int __init rockchip_wifi_init_module_rkwifi(void)
{
        struct task_struct *kthread = NULL;

        kthread = kthread_run(wifi_init_thread, NULL, "wifi_init_thread");
        if (IS_ERR(kthread))
                pr_err("create wifi_init_thread failed.\n");

        return 0;
}

void __exit rockchip_wifi_exit_module_rkwifi(void)
{
        dhd_module_exit();
}

late_initcall(rockchip_wifi_init_module_rkwifi);
module_exit(rockchip_wifi_exit_module_rkwifi);

#if 0
#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)
#if defined(CONFIG_DEFERRED_INITCALLS)
#if defined(CONFIG_MACH_UNIVERSAL7420) || defined(CONFIG_SOC_EXYNOS8890) || \
        defined(CONFIG_ARCH_MSM8996)
deferred_module_init_sync(dhd_module_init);
#else
deferred_module_init(dhd_module_init);
#endif /* CONFIG_MACH_UNIVERSAL7420 || CONFIG_SOC_EXYNOS8890 ||
        * CONFIG_ARCH_MSM8996
        */
#elif defined(USE_LATE_INITCALL_SYNC)
late_initcall_sync(dhd_module_init);
#else
late_initcall(dhd_module_init);
#endif /* USE_LATE_INITCALL_SYNC */
#else
module_init(dhd_module_init);
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0) */

module_exit(dhd_module_exit);

#endif
/*
 * OS specific functions required to implement DHD driver in OS independent way
 */
int
dhd_os_proto_block(dhd_pub_t *pub)
{
        dhd_info_t * dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
                DHD_PERIM_UNLOCK(pub);

                down(&dhd->proto_sem);

                DHD_PERIM_LOCK(pub);
                return 1;
        }

        return 0;
}

int
dhd_os_proto_unblock(dhd_pub_t *pub)
{
        dhd_info_t * dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
                up(&dhd->proto_sem);
                return 1;
        }

        return 0;
}

void
dhd_os_dhdiovar_lock(dhd_pub_t *pub)
{
        dhd_info_t * dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
                mutex_lock(&dhd->dhd_iovar_mutex);
        }
}

void
dhd_os_dhdiovar_unlock(dhd_pub_t *pub)
{
        dhd_info_t * dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
                mutex_unlock(&dhd->dhd_iovar_mutex);
        }
}

unsigned int
dhd_os_get_ioctl_resp_timeout(void)
{
        return ((unsigned int)dhd_ioctl_timeout_msec);
}

void
dhd_os_set_ioctl_resp_timeout(unsigned int timeout_msec)
{
        dhd_ioctl_timeout_msec = (int)timeout_msec;
}

int
dhd_os_ioctl_resp_wait(dhd_pub_t *pub, uint *condition)
{
        dhd_info_t * dhd = (dhd_info_t *)(pub->info);
        int timeout;

        /* Convert timeout in millsecond to jiffies */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
        timeout = msecs_to_jiffies(dhd_ioctl_timeout_msec);
#else
        timeout = dhd_ioctl_timeout_msec * HZ / 1000;
#endif

        DHD_PERIM_UNLOCK(pub);

        timeout = wait_event_timeout(dhd->ioctl_resp_wait, (*condition), timeout);

        DHD_PERIM_LOCK(pub);

        return timeout;
}

int
dhd_os_ioctl_resp_wake(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);

        wake_up(&dhd->ioctl_resp_wait);
        return 0;
}

int
dhd_os_d3ack_wait(dhd_pub_t *pub, uint *condition)
{
        dhd_info_t * dhd = (dhd_info_t *)(pub->info);
        int timeout;

        /* Convert timeout in millsecond to jiffies */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
        timeout = msecs_to_jiffies(dhd_ioctl_timeout_msec);
#else
        timeout = dhd_ioctl_timeout_msec * HZ / 1000;
#endif

        DHD_PERIM_UNLOCK(pub);

        timeout = wait_event_timeout(dhd->d3ack_wait, (*condition), timeout);

        DHD_PERIM_LOCK(pub);

        return timeout;
}

int
dhd_os_d3ack_wake(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);

        wake_up(&dhd->d3ack_wait);
        return 0;
}

int
dhd_os_busbusy_wait_negation(dhd_pub_t *pub, uint *condition)
{
        dhd_info_t * dhd = (dhd_info_t *)(pub->info);
        int timeout;

        /* Wait for bus usage contexts to gracefully exit within some timeout value
         * Set time out to little higher than dhd_ioctl_timeout_msec,
         * so that IOCTL timeout should not get affected.
         */
        /* Convert timeout in millsecond to jiffies */
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
        timeout = msecs_to_jiffies(DHD_BUS_BUSY_TIMEOUT);
#else
        timeout = DHD_BUS_BUSY_TIMEOUT * HZ / 1000;
#endif

        timeout = wait_event_timeout(dhd->dhd_bus_busy_state_wait, !(*condition), timeout);

        return timeout;
}

int INLINE
dhd_os_busbusy_wake(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        /* Call wmb() to make sure before waking up the other event value gets updated */
        OSL_SMP_WMB();
        wake_up(&dhd->dhd_bus_busy_state_wait);
        return 0;
}

void
dhd_os_wd_timer_extend(void *bus, bool extend)
{
        dhd_pub_t *pub = bus;
        dhd_info_t *dhd = (dhd_info_t *)pub->info;

        if (extend)
                dhd_os_wd_timer(bus, WATCHDOG_EXTEND_INTERVAL);
        else
                dhd_os_wd_timer(bus, dhd->default_wd_interval);
}


void
dhd_os_wd_timer(void *bus, uint wdtick)
{
        dhd_pub_t *pub = bus;
        dhd_info_t *dhd = (dhd_info_t *)pub->info;
        unsigned long flags;

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        if (!dhd) {
                DHD_ERROR(("%s: dhd NULL\n", __FUNCTION__));
                return;
        }

        DHD_OS_WD_WAKE_LOCK(pub);
        DHD_GENERAL_LOCK(pub, flags);

        /* don't start the wd until fw is loaded */
        if (pub->busstate == DHD_BUS_DOWN) {
                DHD_GENERAL_UNLOCK(pub, flags);
                if (!wdtick)
                        DHD_OS_WD_WAKE_UNLOCK(pub);
                return;
        }

        /* Totally stop the timer */
        if (!wdtick && dhd->wd_timer_valid == TRUE) {
                dhd->wd_timer_valid = FALSE;
                DHD_GENERAL_UNLOCK(pub, flags);
                del_timer_sync(&dhd->timer);
                DHD_OS_WD_WAKE_UNLOCK(pub);
                return;
        }

        if (wdtick) {
                DHD_OS_WD_WAKE_LOCK(pub);
                dhd_watchdog_ms = (uint)wdtick;
                /* Re arm the timer, at last watchdog period */
                mod_timer(&dhd->timer, jiffies + msecs_to_jiffies(dhd_watchdog_ms));
                dhd->wd_timer_valid = TRUE;
        }
        DHD_GENERAL_UNLOCK(pub, flags);
        DHD_OS_WD_WAKE_UNLOCK(pub);
}

#ifdef DHD_PCIE_RUNTIMEPM
void
dhd_os_runtimepm_timer(void *bus, uint tick)
{
        dhd_pub_t *pub = bus;
        dhd_info_t *dhd = (dhd_info_t *)pub->info;
        unsigned long flags;

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));

        if (!dhd) {
                DHD_ERROR(("%s: dhd is NULL\n", __FUNCTION__));
                return;
        }

        DHD_GENERAL_LOCK(pub, flags);

        /* don't start the RPM until fw is loaded */
        if (pub->busstate == DHD_BUS_DOWN ||
                        pub->busstate == DHD_BUS_DOWN_IN_PROGRESS) {
                DHD_GENERAL_UNLOCK(pub, flags);
                return;
        }

        /* If tick is non-zero, the request is to start the timer */
        if (tick) {
                /* Start the timer only if its not already running */
                if (dhd->rpm_timer_valid == FALSE) {
                        mod_timer(&dhd->rpm_timer, jiffies + msecs_to_jiffies(dhd_runtimepm_ms));
                        dhd->rpm_timer_valid = TRUE;
                }
        } else {
                /* tick is zero, we have to stop the timer */
                /* Stop the timer only if its running, otherwise we don't have to do anything */
                if (dhd->rpm_timer_valid == TRUE) {
                        dhd->rpm_timer_valid = FALSE;
                        DHD_GENERAL_UNLOCK(pub, flags);
                        del_timer_sync(&dhd->rpm_timer);
                        /* we have already released the lock, so just go to exit */
                        goto exit;
                }
        }

        DHD_GENERAL_UNLOCK(pub, flags);
exit:
        return;

}

#endif /* DHD_PCIE_RUNTIMEPM */

void *
dhd_os_open_image(char *filename)
{
        struct file *fp;
        int size;

        fp = filp_open(filename, O_RDONLY, 0);
        /*
         * 2.6.11 (FC4) supports filp_open() but later revs don't?
         * Alternative:
         * fp = open_namei(AT_FDCWD, filename, O_RD, 0);
         * ???
         */
         if (IS_ERR(fp)) {
                 fp = NULL;
                 goto err;
         }

         if (!S_ISREG(file_inode(fp)->i_mode)) {
                 DHD_ERROR(("%s: %s is not regular file\n", __FUNCTION__, filename));
                 fp = NULL;
                 goto err;
         }

         size = i_size_read(file_inode(fp));
         if (size <= 0) {
                 DHD_ERROR(("%s: %s file size invalid %d\n", __FUNCTION__, filename, size));
                 fp = NULL;
                 goto err;
         }

         DHD_ERROR(("%s: %s (%d bytes) open success\n", __FUNCTION__, filename, size));

err:
         return fp;
}

int
dhd_os_get_image_block(char *buf, int len, void *image)
{
        struct file *fp = (struct file *)image;
        int rdlen;
        int size;

        if (!image)
                return 0;

        size = i_size_read(file_inode(fp));
        rdlen = kernel_read(fp, fp->f_pos, buf, MIN(len, size));

        if (len >= size && size != rdlen) {
                return -EIO;
        }

        if (rdlen > 0)
                fp->f_pos += rdlen;

        return rdlen;
}

void
dhd_os_close_image(void *image)
{
        if (image)
                filp_close((struct file *)image, NULL);
}

void
dhd_os_sdlock(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *)(pub->info);

        if (dhd_dpc_prio >= 0)
                down(&dhd->sdsem);
        else
                spin_lock_bh(&dhd->sdlock);
}

void
dhd_os_sdunlock(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *)(pub->info);

        if (dhd_dpc_prio >= 0)
                up(&dhd->sdsem);
        else
                spin_unlock_bh(&dhd->sdlock);
}

void
dhd_os_sdlock_txq(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *)(pub->info);
        spin_lock_bh(&dhd->txqlock);
}

void
dhd_os_sdunlock_txq(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *)(pub->info);
        spin_unlock_bh(&dhd->txqlock);
}

void
dhd_os_sdlock_rxq(dhd_pub_t *pub)
{
}

void
dhd_os_sdunlock_rxq(dhd_pub_t *pub)
{
}

static void
dhd_os_rxflock(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *)(pub->info);
        spin_lock_bh(&dhd->rxf_lock);

}

static void
dhd_os_rxfunlock(dhd_pub_t *pub)
{
        dhd_info_t *dhd;

        dhd = (dhd_info_t *)(pub->info);
        spin_unlock_bh(&dhd->rxf_lock);
}

#ifdef DHDTCPACK_SUPPRESS
unsigned long
dhd_os_tcpacklock(dhd_pub_t *pub)
{
        dhd_info_t *dhd;
        unsigned long flags = 0;

        dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
#ifdef BCMSDIO
                spin_lock_bh(&dhd->tcpack_lock);
#else
                spin_lock_irqsave(&dhd->tcpack_lock, flags);
#endif /* BCMSDIO */
        }

        return flags;
}

void
dhd_os_tcpackunlock(dhd_pub_t *pub, unsigned long flags)
{
        dhd_info_t *dhd;

#ifdef BCMSDIO
        BCM_REFERENCE(flags);
#endif /* BCMSDIO */

        dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
#ifdef BCMSDIO
                spin_lock_bh(&dhd->tcpack_lock);
#else
                spin_unlock_irqrestore(&dhd->tcpack_lock, flags);
#endif /* BCMSDIO */
        }
}
#endif /* DHDTCPACK_SUPPRESS */

uint8* dhd_os_prealloc(dhd_pub_t *dhdpub, int section, uint size, bool kmalloc_if_fail)
{
        uint8* buf;
        gfp_t flags = CAN_SLEEP() ? GFP_KERNEL: GFP_ATOMIC;

        buf = (uint8*)wifi_platform_prealloc(dhdpub->info->adapter, section, size);
        if (buf == NULL && kmalloc_if_fail)
                buf = kmalloc(size, flags);

        return buf;
}

void dhd_os_prefree(dhd_pub_t *dhdpub, void *addr, uint size)
{
}

#if defined(WL_WIRELESS_EXT)
struct iw_statistics *
dhd_get_wireless_stats(struct net_device *dev)
{
        int res = 0;
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        if (!dhd->pub.up) {
                return NULL;
        }

        res = wl_iw_get_wireless_stats(dev, &dhd->iw.wstats);

        if (res == 0)
                return &dhd->iw.wstats;
        else
                return NULL;
}
#endif /* defined(WL_WIRELESS_EXT) */

static int
dhd_wl_host_event(dhd_info_t *dhd, int *ifidx, void *pktdata,
        wl_event_msg_t *event, void **data)
{
        int bcmerror = 0;
        ASSERT(dhd != NULL);

#ifdef SHOW_LOGTRACE
                bcmerror = wl_host_event(&dhd->pub, ifidx, pktdata, event, data, &dhd->event_data);
#else
                bcmerror = wl_host_event(&dhd->pub, ifidx, pktdata, event, data, NULL);
#endif /* SHOW_LOGTRACE */

        if (bcmerror != BCME_OK)
                return (bcmerror);

#if defined(WL_WIRELESS_EXT)
        if (event->bsscfgidx == 0) {
                /*
                 * Wireless ext is on primary interface only
                 */

        ASSERT(dhd->iflist[*ifidx] != NULL);
        ASSERT(dhd->iflist[*ifidx]->net != NULL);

                if (dhd->iflist[*ifidx]->net) {
                wl_iw_event(dhd->iflist[*ifidx]->net, event, *data);
                }
        }
#endif /* defined(WL_WIRELESS_EXT)  */

#ifdef WL_CFG80211
        ASSERT(dhd->iflist[*ifidx] != NULL);
        ASSERT(dhd->iflist[*ifidx]->net != NULL);
        if (dhd->iflist[*ifidx]->net)
                wl_cfg80211_event(dhd->iflist[*ifidx]->net, event, *data);
#endif /* defined(WL_CFG80211) */

        return (bcmerror);
}

/* send up locally generated event */
void
dhd_sendup_event(dhd_pub_t *dhdp, wl_event_msg_t *event, void *data)
{
        switch (ntoh32(event->event_type)) {

        default:
                break;
        }
}

#ifdef LOG_INTO_TCPDUMP
void
dhd_sendup_log(dhd_pub_t *dhdp, void *data, int data_len)
{
        struct sk_buff *p, *skb;
        uint32 pktlen;
        int len;
        dhd_if_t *ifp;
        dhd_info_t *dhd;
        uchar *skb_data;
        int ifidx = 0;
        struct ether_header eth;

        pktlen = sizeof(eth) + data_len;
        dhd = dhdp->info;

        if ((p = PKTGET(dhdp->osh, pktlen, FALSE))) {
                ASSERT(ISALIGNED((uintptr)PKTDATA(dhdp->osh, p), sizeof(uint32)));

                bcopy(&dhdp->mac, &eth.ether_dhost, ETHER_ADDR_LEN);
                bcopy(&dhdp->mac, &eth.ether_shost, ETHER_ADDR_LEN);
                ETHER_TOGGLE_LOCALADDR(&eth.ether_shost);
                eth.ether_type = hton16(ETHER_TYPE_BRCM);

                bcopy((void *)&eth, PKTDATA(dhdp->osh, p), sizeof(eth));
                bcopy(data, PKTDATA(dhdp->osh, p) + sizeof(eth), data_len);
                skb = PKTTONATIVE(dhdp->osh, p);
                skb_data = skb->data;
                len = skb->len;

                ifidx = dhd_ifname2idx(dhd, "wlan0");
                ifp = dhd->iflist[ifidx];
                if (ifp == NULL)
                         ifp = dhd->iflist[0];

                ASSERT(ifp);
                skb->dev = ifp->net;
                skb->protocol = eth_type_trans(skb, skb->dev);
                skb->data = skb_data;
                skb->len = len;

                /* Strip header, count, deliver upward */
                skb_pull(skb, ETH_HLEN);

                bcm_object_trace_opr(skb, BCM_OBJDBG_REMOVE,
                        __FUNCTION__, __LINE__);
                /* Send the packet */
                if (in_interrupt()) {
                        netif_rx(skb);
                } else {
                        netif_rx_ni(skb);
                }
        }
        else {
                /* Could not allocate a sk_buf */
                DHD_ERROR(("%s: unable to alloc sk_buf\n", __FUNCTION__));
        }
}
#endif /* LOG_INTO_TCPDUMP */

void dhd_wait_for_event(dhd_pub_t *dhd, bool *lockvar)
{
#if defined(BCMSDIO) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0))
        struct dhd_info *dhdinfo =  dhd->info;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
        int timeout = msecs_to_jiffies(IOCTL_RESP_TIMEOUT);
#else
        int timeout = (IOCTL_RESP_TIMEOUT / 1000) * HZ;
#endif /* (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27)) */

        dhd_os_sdunlock(dhd);
        wait_event_timeout(dhdinfo->ctrl_wait, (*lockvar == FALSE), timeout);
        dhd_os_sdlock(dhd);
#endif /* defined(BCMSDIO) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0)) */
        return;
}

void dhd_wait_event_wakeup(dhd_pub_t *dhd)
{
#if defined(BCMSDIO) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 0))
        struct dhd_info *dhdinfo =  dhd->info;
        if (waitqueue_active(&dhdinfo->ctrl_wait))
                wake_up(&dhdinfo->ctrl_wait);
#endif
        return;
}

#if defined(BCMSDIO) || defined(BCMPCIE)
int
dhd_net_bus_devreset(struct net_device *dev, uint8 flag)
{
        int ret;

        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        if (flag == TRUE) {
                /* Issue wl down command before resetting the chip */
                if (dhd_wl_ioctl_cmd(&dhd->pub, WLC_DOWN, NULL, 0, TRUE, 0) < 0) {
                        DHD_TRACE(("%s: wl down failed\n", __FUNCTION__));
                }
#ifdef PROP_TXSTATUS
                if (dhd->pub.wlfc_enabled)
                        dhd_wlfc_deinit(&dhd->pub);
#endif /* PROP_TXSTATUS */
#ifdef PNO_SUPPORT
        if (dhd->pub.pno_state)
                dhd_pno_deinit(&dhd->pub);
#endif
        }

#ifdef BCMSDIO
        if (!flag) {
                dhd_update_fw_nv_path(dhd);
                /* update firmware and nvram path to sdio bus */
                dhd_bus_update_fw_nv_path(dhd->pub.bus,
                        dhd->fw_path, dhd->nv_path, dhd->conf_path);
        }
#endif /* BCMSDIO */

        ret = dhd_bus_devreset(&dhd->pub, flag);
        if (ret) {
                DHD_ERROR(("%s: dhd_bus_devreset: %d\n", __FUNCTION__, ret));
                return ret;
        }

        return ret;
}

#ifdef BCMSDIO
int
dhd_net_bus_suspend(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        return dhd_bus_suspend(&dhd->pub);
}

int
dhd_net_bus_resume(struct net_device *dev, uint8 stage)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        return dhd_bus_resume(&dhd->pub, stage);
}

#endif /* BCMSDIO */
#endif /* BCMSDIO || BCMPCIE */

int net_os_set_suspend_disable(struct net_device *dev, int val)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret = 0;

        if (dhd) {
                ret = dhd->pub.suspend_disable_flag;
                dhd->pub.suspend_disable_flag = val;
        }
        return ret;
}

int net_os_set_suspend(struct net_device *dev, int val, int force)
{
        int ret = 0;
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        if (dhd) {
#ifdef CONFIG_MACH_UNIVERSAL7420
#endif /* CONFIG_MACH_UNIVERSAL7420 */
#if defined(CONFIG_HAS_EARLYSUSPEND) && defined(DHD_USE_EARLYSUSPEND)
                ret = dhd_set_suspend(val, &dhd->pub);
#else
                ret = dhd_suspend_resume_helper(dhd, val, force);
#endif
#ifdef WL_CFG80211
                wl_cfg80211_update_power_mode(dev);
#endif
        }
        return ret;
}

int net_os_set_suspend_bcn_li_dtim(struct net_device *dev, int val)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        if (dhd)
                dhd->pub.suspend_bcn_li_dtim = val;

        return 0;
}

#ifdef PKT_FILTER_SUPPORT
int net_os_rxfilter_add_remove(struct net_device *dev, int add_remove, int num)
{
#ifdef GAN_LITE_NAT_KEEPALIVE_FILTER
        return 0;
#else
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        char *filterp = NULL;
        int filter_id = 0;
        int ret = 0;

        if (!dhd_master_mode)
                add_remove = !add_remove;
        DHD_ERROR(("%s: add_remove = %d, num = %d\n", __FUNCTION__, add_remove, num));
        if (!dhd || (num == DHD_UNICAST_FILTER_NUM))
                return ret;
        if (num >= dhd->pub.pktfilter_count)
                return -EINVAL;
        switch (num) {
                case DHD_BROADCAST_FILTER_NUM:
                        filterp = "101 0 0 0 0xFFFFFFFFFFFF 0xFFFFFFFFFFFF";
                        filter_id = 101;
                        break;
                case DHD_MULTICAST4_FILTER_NUM:
                        filterp = "102 0 0 0 0xFFFFFF 0x01005E";
                        filter_id = 102;
                        break;
                case DHD_MULTICAST6_FILTER_NUM:
                        filterp = "103 0 0 0 0xFFFF 0x3333";
                        filter_id = 103;
                        break;
                case DHD_MDNS_FILTER_NUM:
                        filterp = "104 0 0 0 0xFFFFFFFFFFFF 0x01005E0000FB";
                        filter_id = 104;
                        break;
                default:
                        return -EINVAL;
        }

        /* Add filter */
        if (add_remove) {
                dhd->pub.pktfilter[num] = filterp;
                dhd_pktfilter_offload_set(&dhd->pub, dhd->pub.pktfilter[num]);
        } else { /* Delete filter */
                if (dhd->pub.pktfilter[num] != NULL) {
                        dhd_pktfilter_offload_delete(&dhd->pub, filter_id);
                        dhd->pub.pktfilter[num] = NULL;
                }
        }
        return ret;
#endif /* GAN_LITE_NAT_KEEPALIVE_FILTER */
}

int dhd_os_enable_packet_filter(dhd_pub_t *dhdp, int val)

{
        int ret = 0;

        /* Packet filtering is set only if we still in early-suspend and
         * we need either to turn it ON or turn it OFF
         * We can always turn it OFF in case of early-suspend, but we turn it
         * back ON only if suspend_disable_flag was not set
        */
        if (dhdp && dhdp->up) {
                if (dhdp->in_suspend) {
                        if (!val || (val && !dhdp->suspend_disable_flag))
                                dhd_enable_packet_filter(val, dhdp);
                }
        }
        return ret;
}

/* function to enable/disable packet for Network device */
int net_os_enable_packet_filter(struct net_device *dev, int val)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        DHD_ERROR(("%s: val = %d\n", __FUNCTION__, val));
        return dhd_os_enable_packet_filter(&dhd->pub, val);
}
#endif /* PKT_FILTER_SUPPORT */

int
dhd_dev_init_ioctl(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret;

        if ((ret = dhd_sync_with_dongle(&dhd->pub)) < 0)
                goto done;

done:
        return ret;
}

int
dhd_dev_get_feature_set(struct net_device *dev)
{
        dhd_info_t *ptr = *(dhd_info_t **)netdev_priv(dev);
        dhd_pub_t *dhd = (&ptr->pub);
        int feature_set = 0;

#ifdef DYNAMIC_SWOOB_DURATION
#ifndef CUSTOM_INTR_WIDTH
#define CUSTOM_INTR_WIDTH 100
        int intr_width = 0;
#endif /* CUSTOM_INTR_WIDTH */
#endif /* DYNAMIC_SWOOB_DURATION */
        if (!dhd)
                return feature_set;

        if (FW_SUPPORTED(dhd, sta))
                feature_set |= WIFI_FEATURE_INFRA;
        if (FW_SUPPORTED(dhd, dualband))
                feature_set |= WIFI_FEATURE_INFRA_5G;
        if (FW_SUPPORTED(dhd, p2p))
                feature_set |= WIFI_FEATURE_P2P;
        if (dhd->op_mode & DHD_FLAG_HOSTAP_MODE)
                feature_set |= WIFI_FEATURE_SOFT_AP;
        if (FW_SUPPORTED(dhd, tdls))
                feature_set |= WIFI_FEATURE_TDLS;
        if (FW_SUPPORTED(dhd, vsdb))
                feature_set |= WIFI_FEATURE_TDLS_OFFCHANNEL;
        if (FW_SUPPORTED(dhd, nan)) {
                feature_set |= WIFI_FEATURE_NAN;
                /* NAN is essentail for d2d rtt */
                if (FW_SUPPORTED(dhd, rttd2d))
                        feature_set |= WIFI_FEATURE_D2D_RTT;
        }
#ifdef RTT_SUPPORT
        feature_set |= WIFI_FEATURE_D2AP_RTT;
#endif /* RTT_SUPPORT */
#ifdef LINKSTAT_SUPPORT
        feature_set |= WIFI_FEATURE_LINKSTAT;
#endif /* LINKSTAT_SUPPORT */
        /* Supports STA + STA always */
        feature_set |= WIFI_FEATURE_ADDITIONAL_STA;
#ifdef PNO_SUPPORT
        if (dhd_is_pno_supported(dhd)) {
                feature_set |= WIFI_FEATURE_PNO;
                feature_set |= WIFI_FEATURE_BATCH_SCAN;
#ifdef GSCAN_SUPPORT
                feature_set |= WIFI_FEATURE_GSCAN;
#endif /* GSCAN_SUPPORT */
        }
#endif /* PNO_SUPPORT */
#ifdef WL11U
        feature_set |= WIFI_FEATURE_HOTSPOT;
#endif /* WL11U */
        return feature_set;
}


int *dhd_dev_get_feature_set_matrix(struct net_device *dev, int *num)
{
        int feature_set_full, mem_needed;
        int *ret;

        *num = 0;
        mem_needed = sizeof(int) * MAX_FEATURE_SET_CONCURRRENT_GROUPS;
        ret = (int *) kmalloc(mem_needed, GFP_KERNEL);
        if (!ret) {
                DHD_ERROR(("%s: failed to allocate %d bytes\n", __FUNCTION__,
                        mem_needed));
                return ret;
        }

        feature_set_full = dhd_dev_get_feature_set(dev);

        ret[0] = (feature_set_full & WIFI_FEATURE_INFRA) |
                 (feature_set_full & WIFI_FEATURE_INFRA_5G) |
                 (feature_set_full & WIFI_FEATURE_NAN) |
                 (feature_set_full & WIFI_FEATURE_D2D_RTT) |
                 (feature_set_full & WIFI_FEATURE_D2AP_RTT) |
                 (feature_set_full & WIFI_FEATURE_PNO) |
                 (feature_set_full & WIFI_FEATURE_BATCH_SCAN) |
                 (feature_set_full & WIFI_FEATURE_GSCAN) |
                 (feature_set_full & WIFI_FEATURE_HOTSPOT) |
                 (feature_set_full & WIFI_FEATURE_ADDITIONAL_STA) |
                 (feature_set_full & WIFI_FEATURE_EPR);

        ret[1] = (feature_set_full & WIFI_FEATURE_INFRA) |
                 (feature_set_full & WIFI_FEATURE_INFRA_5G) |
                 /* Not yet verified NAN with P2P */
                 /* (feature_set_full & WIFI_FEATURE_NAN) | */
                 (feature_set_full & WIFI_FEATURE_P2P) |
                 (feature_set_full & WIFI_FEATURE_D2AP_RTT) |
                 (feature_set_full & WIFI_FEATURE_D2D_RTT) |
                 (feature_set_full & WIFI_FEATURE_EPR);

        ret[2] = (feature_set_full & WIFI_FEATURE_INFRA) |
                 (feature_set_full & WIFI_FEATURE_INFRA_5G) |
                 (feature_set_full & WIFI_FEATURE_NAN) |
                 (feature_set_full & WIFI_FEATURE_D2D_RTT) |
                 (feature_set_full & WIFI_FEATURE_D2AP_RTT) |
                 (feature_set_full & WIFI_FEATURE_TDLS) |
                 (feature_set_full & WIFI_FEATURE_TDLS_OFFCHANNEL) |
                 (feature_set_full & WIFI_FEATURE_EPR);
        *num = MAX_FEATURE_SET_CONCURRRENT_GROUPS;

        return ret;
}
#ifdef CUSTOM_FORCE_NODFS_FLAG
int
dhd_dev_set_nodfs(struct net_device *dev, u32 nodfs)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        if (nodfs)
                dhd->pub.dhd_cflags |= WLAN_PLAT_NODFS_FLAG;
        else
                dhd->pub.dhd_cflags &= ~WLAN_PLAT_NODFS_FLAG;
        dhd->pub.force_country_change = TRUE;
        return 0;
}
#endif /* CUSTOM_FORCE_NODFS_FLAG */
#ifdef PNO_SUPPORT
/* Linux wrapper to call common dhd_pno_stop_for_ssid */
int
dhd_dev_pno_stop_for_ssid(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        return (dhd_pno_stop_for_ssid(&dhd->pub));
}
/* Linux wrapper to call common dhd_pno_set_for_ssid */
int
dhd_dev_pno_set_for_ssid(struct net_device *dev, wlc_ssid_ext_t* ssids_local, int nssid,
        uint16  scan_fr, int pno_repeat, int pno_freq_expo_max, uint16 *channel_list, int nchan)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        return (dhd_pno_set_for_ssid(&dhd->pub, ssids_local, nssid, scan_fr,
                pno_repeat, pno_freq_expo_max, channel_list, nchan));
}

/* Linux wrapper to call common dhd_pno_enable */
int
dhd_dev_pno_enable(struct net_device *dev, int enable)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        return (dhd_pno_enable(&dhd->pub, enable));
}

/* Linux wrapper to call common dhd_pno_set_for_hotlist */
int
dhd_dev_pno_set_for_hotlist(struct net_device *dev, wl_pfn_bssid_t *p_pfn_bssid,
        struct dhd_pno_hotlist_params *hotlist_params)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        return (dhd_pno_set_for_hotlist(&dhd->pub, p_pfn_bssid, hotlist_params));
}
/* Linux wrapper to call common dhd_dev_pno_stop_for_batch */
int
dhd_dev_pno_stop_for_batch(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        return (dhd_pno_stop_for_batch(&dhd->pub));
}
/* Linux wrapper to call common dhd_dev_pno_set_for_batch */
int
dhd_dev_pno_set_for_batch(struct net_device *dev, struct dhd_pno_batch_params *batch_params)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        return (dhd_pno_set_for_batch(&dhd->pub, batch_params));
}
/* Linux wrapper to call common dhd_dev_pno_get_for_batch */
int
dhd_dev_pno_get_for_batch(struct net_device *dev, char *buf, int bufsize)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        return (dhd_pno_get_for_batch(&dhd->pub, buf, bufsize, PNO_STATUS_NORMAL));
}
/* Linux wrapper to call common dhd_pno_set_mac_oui */
int
dhd_dev_pno_set_mac_oui(struct net_device *dev, uint8 *oui)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        return (dhd_pno_set_mac_oui(&dhd->pub, oui));
}
#endif /* PNO_SUPPORT */

#if defined(PNO_SUPPORT)
#ifdef GSCAN_SUPPORT
/* Linux wrapper to call common dhd_pno_set_cfg_gscan */
int
dhd_dev_pno_set_cfg_gscan(struct net_device *dev, dhd_pno_gscan_cmd_cfg_t type,
 void *buf, uint8 flush)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_pno_set_cfg_gscan(&dhd->pub, type, buf, flush));
}

/* Linux wrapper to call common dhd_pno_get_gscan */
void *
dhd_dev_pno_get_gscan(struct net_device *dev, dhd_pno_gscan_cmd_cfg_t type,
                      void *info, uint32 *len)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_pno_get_gscan(&dhd->pub, type, info, len));
}

/* Linux wrapper to call common dhd_wait_batch_results_complete */
void
dhd_dev_wait_batch_results_complete(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_wait_batch_results_complete(&dhd->pub));
}

/* Linux wrapper to call common dhd_pno_lock_batch_results */
void
dhd_dev_pno_lock_access_batch_results(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_pno_lock_batch_results(&dhd->pub));
}
/* Linux wrapper to call common dhd_pno_unlock_batch_results */
void
dhd_dev_pno_unlock_access_batch_results(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_pno_unlock_batch_results(&dhd->pub));
}

/* Linux wrapper to call common dhd_pno_initiate_gscan_request */
int
dhd_dev_pno_run_gscan(struct net_device *dev, bool run, bool flush)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_pno_initiate_gscan_request(&dhd->pub, run, flush));
}

/* Linux wrapper to call common dhd_pno_enable_full_scan_result */
int
dhd_dev_pno_enable_full_scan_result(struct net_device *dev, bool real_time_flag)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_pno_enable_full_scan_result(&dhd->pub, real_time_flag));
}

/* Linux wrapper to call common dhd_handle_swc_evt */
void *
dhd_dev_swc_scan_event(struct net_device *dev, const void  *data, int *send_evt_bytes)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_handle_swc_evt(&dhd->pub, data, send_evt_bytes));
}

/* Linux wrapper to call common dhd_handle_hotlist_scan_evt */
void *
dhd_dev_hotlist_scan_event(struct net_device *dev,
      const void  *data, int *send_evt_bytes, hotlist_type_t type)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_handle_hotlist_scan_evt(&dhd->pub, data, send_evt_bytes, type));
}

/* Linux wrapper to call common dhd_process_full_gscan_result */
void *
dhd_dev_process_full_gscan_result(struct net_device *dev,
const void  *data, int *send_evt_bytes)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_process_full_gscan_result(&dhd->pub, data, send_evt_bytes));
}

void
dhd_dev_gscan_hotlist_cache_cleanup(struct net_device *dev, hotlist_type_t type)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        dhd_gscan_hotlist_cache_cleanup(&dhd->pub, type);

        return;
}

int
dhd_dev_gscan_batch_cache_cleanup(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_gscan_batch_cache_cleanup(&dhd->pub));
}

/* Linux wrapper to call common dhd_retreive_batch_scan_results */
int
dhd_dev_retrieve_batch_scan(struct net_device *dev)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_retreive_batch_scan_results(&dhd->pub));
}
#endif /* GSCAN_SUPPORT */
#endif 
#ifdef RTT_SUPPORT
/* Linux wrapper to call common dhd_pno_set_cfg_gscan */
int
dhd_dev_rtt_set_cfg(struct net_device *dev, void *buf)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_rtt_set_cfg(&dhd->pub, buf));
}
int
dhd_dev_rtt_cancel_cfg(struct net_device *dev, struct ether_addr *mac_list, int mac_cnt)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_rtt_stop(&dhd->pub, mac_list, mac_cnt));
}
int
dhd_dev_rtt_register_noti_callback(struct net_device *dev, void *ctx, dhd_rtt_compl_noti_fn noti_fn)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_rtt_register_noti_callback(&dhd->pub, ctx, noti_fn));
}
int
dhd_dev_rtt_unregister_noti_callback(struct net_device *dev, dhd_rtt_compl_noti_fn noti_fn)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_rtt_unregister_noti_callback(&dhd->pub, noti_fn));
}

int
dhd_dev_rtt_capability(struct net_device *dev, rtt_capabilities_t *capa)
{
        dhd_info_t *dhd = *(dhd_info_t **)netdev_priv(dev);

        return (dhd_rtt_capability(&dhd->pub, capa));
}

#endif /* RTT_SUPPORT */

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
static void dhd_hang_process(void *dhd_info, void *event_info, u8 event)
{
        dhd_info_t *dhd;
        struct net_device *dev;

        dhd = (dhd_info_t *)dhd_info;
        dev = dhd->iflist[0]->net;

        if (dev) {
#if defined(WL_WIRELESS_EXT)
                wl_iw_send_priv_event(dev, "HANG");
#endif
#if defined(WL_CFG80211)
                wl_cfg80211_hang(dev, WLAN_REASON_UNSPECIFIED);
#endif
        }
}

#ifdef EXYNOS_PCIE_LINKDOWN_RECOVERY
extern dhd_pub_t *link_recovery;
void dhd_host_recover_link(void)
{
        DHD_ERROR(("****** %s ******\n", __FUNCTION__));
        link_recovery->hang_reason = HANG_REASON_PCIE_LINK_DOWN;
        dhd_bus_set_linkdown(link_recovery, TRUE);
        dhd_os_send_hang_message(link_recovery);
}
EXPORT_SYMBOL(dhd_host_recover_link);
#endif /* EXYNOS_PCIE_LINKDOWN_RECOVERY */

int dhd_os_send_hang_message(dhd_pub_t *dhdp)
{
        int ret = 0;
        if (dhdp) {
                if (!dhdp->hang_was_sent) {
                        dhdp->hang_was_sent = 1;
                        dhd_deferred_schedule_work(dhdp->info->dhd_deferred_wq, (void *)dhdp,
                                DHD_WQ_WORK_HANG_MSG, dhd_hang_process, DHD_WORK_PRIORITY_HIGH);
                        DHD_ERROR(("%s: Event HANG send up due to  re=%d te=%d s=%d\n", __FUNCTION__,
                                dhdp->rxcnt_timeout, dhdp->txcnt_timeout, dhdp->busstate));
                }
        }
        return ret;
}

int net_os_send_hang_message(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret = 0;

        if (dhd) {
                /* Report FW problem when enabled */
                if (dhd->pub.hang_report) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27))
                        ret = dhd_os_send_hang_message(&dhd->pub);
#else
                        ret = wl_cfg80211_hang(dev, WLAN_REASON_UNSPECIFIED);
#endif
                } else {
                        DHD_ERROR(("%s: FW HANG ignored (for testing purpose) and not sent up\n",
                                __FUNCTION__));
                        /* Enforce bus down to stop any future traffic */
                        dhd->pub.busstate = DHD_BUS_DOWN;
                }
        }
        return ret;
}

int net_os_send_hang_message_reason(struct net_device *dev, const char *string_num)
{
        dhd_info_t *dhd = NULL;
        dhd_pub_t *dhdp = NULL;
        int reason;

        dhd = DHD_DEV_INFO(dev);
        if (dhd) {
                dhdp = &dhd->pub;
        }

        if (!dhd || !dhdp) {
                return 0;
        }

        reason = bcm_strtoul(string_num, NULL, 0);
        DHD_INFO(("%s: Enter, reason=0x%x\n", __FUNCTION__, reason));

        if ((reason <= HANG_REASON_MASK) || (reason >= HANG_REASON_MAX)) {
                reason = 0;
        }

        dhdp->hang_reason = reason;

        return net_os_send_hang_message(dev);
}
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 27) && OEM_ANDROID */


int dhd_net_wifi_platform_set_power(struct net_device *dev, bool on, unsigned long delay_msec)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        return wifi_platform_set_power(dhd->adapter, on, delay_msec);
}

bool dhd_force_country_change(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        if (dhd && dhd->pub.up)
                return dhd->pub.force_country_change;
        return FALSE;
}
void dhd_get_customized_country_code(struct net_device *dev, char *country_iso_code,
        wl_country_t *cspec)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
#ifdef CUSTOM_COUNTRY_CODE
        get_customized_country_code(dhd->adapter, country_iso_code, cspec,
                        dhd->pub.dhd_cflags);
#else
        get_customized_country_code(dhd->adapter, country_iso_code, cspec);
#endif /* CUSTOM_COUNTRY_CODE */
}
void dhd_bus_country_set(struct net_device *dev, wl_country_t *cspec, bool notify)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        if (dhd && dhd->pub.up) {
                memcpy(&dhd->pub.dhd_cspec, cspec, sizeof(wl_country_t));
#ifdef WL_CFG80211
                wl_update_wiphybands(NULL, notify);
#endif
        }
}

void dhd_bus_band_set(struct net_device *dev, uint band)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        if (dhd && dhd->pub.up) {
#ifdef WL_CFG80211
                wl_update_wiphybands(NULL, true);
#endif
        }
}

int dhd_net_set_fw_path(struct net_device *dev, char *fw)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);

        if (!fw || fw[0] == '\0')
                return -EINVAL;

        strncpy(dhd->fw_path, fw, sizeof(dhd->fw_path) - 1);
        dhd->fw_path[sizeof(dhd->fw_path)-1] = '\0';

#if defined(SOFTAP)
        if (strstr(fw, "apsta") != NULL) {
                DHD_INFO(("GOT APSTA FIRMWARE\n"));
                ap_fw_loaded = TRUE;
        } else {
                DHD_INFO(("GOT STA FIRMWARE\n"));
                ap_fw_loaded = FALSE;
        }
#endif 
        return 0;
}

void dhd_net_if_lock(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        dhd_net_if_lock_local(dhd);
}

void dhd_net_if_unlock(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        dhd_net_if_unlock_local(dhd);
}

static void dhd_net_if_lock_local(dhd_info_t *dhd)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        if (dhd)
                mutex_lock(&dhd->dhd_net_if_mutex);
#endif
}

static void dhd_net_if_unlock_local(dhd_info_t *dhd)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        if (dhd)
                mutex_unlock(&dhd->dhd_net_if_mutex);
#endif
}

static void dhd_suspend_lock(dhd_pub_t *pub)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        if (dhd)
                mutex_lock(&dhd->dhd_suspend_mutex);
#endif
}

static void dhd_suspend_unlock(dhd_pub_t *pub)
{
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 25))
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        if (dhd)
                mutex_unlock(&dhd->dhd_suspend_mutex);
#endif
}

unsigned long dhd_os_general_spin_lock(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags = 0;

        if (dhd)
                spin_lock_irqsave(&dhd->dhd_lock, flags);

        return flags;
}

void dhd_os_general_spin_unlock(dhd_pub_t *pub, unsigned long flags)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);

        if (dhd)
                spin_unlock_irqrestore(&dhd->dhd_lock, flags);
}

/* Linux specific multipurpose spinlock API */
void *
dhd_os_spin_lock_init(osl_t *osh)
{
        /* Adding 4 bytes since the sizeof(spinlock_t) could be 0 */
        /* if CONFIG_SMP and CONFIG_DEBUG_SPINLOCK are not defined */
        /* and this results in kernel asserts in internal builds */
        spinlock_t * lock = MALLOC(osh, sizeof(spinlock_t) + 4);
        if (lock)
                spin_lock_init(lock);
        return ((void *)lock);
}
void
dhd_os_spin_lock_deinit(osl_t *osh, void *lock)
{
        if (lock)
                MFREE(osh, lock, sizeof(spinlock_t) + 4);
}
unsigned long
dhd_os_spin_lock(void *lock)
{
        unsigned long flags = 0;

        if (lock)
                spin_lock_irqsave((spinlock_t *)lock, flags);

        return flags;
}
void
dhd_os_spin_unlock(void *lock, unsigned long flags)
{
        if (lock)
                spin_unlock_irqrestore((spinlock_t *)lock, flags);
}

static int
dhd_get_pend_8021x_cnt(dhd_info_t *dhd)
{
        return (atomic_read(&dhd->pend_8021x_cnt));
}

#define MAX_WAIT_FOR_8021X_TX   100

int
dhd_wait_pend8021x(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int timeout = msecs_to_jiffies(10);
        int ntimes = MAX_WAIT_FOR_8021X_TX;
        int pend = dhd_get_pend_8021x_cnt(dhd);

        while (ntimes && pend) {
                if (pend) {
                        set_current_state(TASK_INTERRUPTIBLE);
                        DHD_PERIM_UNLOCK(&dhd->pub);
                        schedule_timeout(timeout);
                        DHD_PERIM_LOCK(&dhd->pub);
                        set_current_state(TASK_RUNNING);
                        ntimes--;
                }
                pend = dhd_get_pend_8021x_cnt(dhd);
        }
        if (ntimes == 0)
        {
                atomic_set(&dhd->pend_8021x_cnt, 0);
                DHD_ERROR(("%s: TIMEOUT\n", __FUNCTION__));
        }
        return pend;
}

#ifdef DHD_DEBUG
static void
dhd_convert_memdump_type_to_str(uint32 type, char *buf)
{
        char *type_str = NULL;

        switch (type) {
                case DUMP_TYPE_RESUMED_ON_TIMEOUT:
                        type_str = "resumed_on_timeout";
                        break;
                case DUMP_TYPE_D3_ACK_TIMEOUT:
                        type_str = "D3_ACK_timeout";
                        break;
                case DUMP_TYPE_DONGLE_TRAP:
                        type_str = "Dongle_Trap";
                        break;
                case DUMP_TYPE_MEMORY_CORRUPTION:
                        type_str = "Memory_Corruption";
                        break;
                case DUMP_TYPE_PKTID_AUDIT_FAILURE:
                        type_str = "PKTID_AUDIT_Fail";
                        break;
                case DUMP_TYPE_SCAN_TIMEOUT:
                        type_str = "SCAN_timeout";
                        break;
                case DUMP_TYPE_SCAN_BUSY:
                        type_str = "SCAN_Busy";
                        break;
                case DUMP_TYPE_BY_SYSDUMP:
                        type_str = "BY_SYSDUMP";
                        break;
                case DUMP_TYPE_BY_LIVELOCK:
                        type_str = "BY_LIVELOCK";
                        break;
                case DUMP_TYPE_AP_LINKUP_FAILURE:
                        type_str = "BY_AP_LINK_FAILURE";
                        break;
                default:
                        type_str = "Unknown_type";
                        break;
        }

        strncpy(buf, type_str, strlen(type_str));
        buf[strlen(type_str)] = 0;
}

int
write_to_file(dhd_pub_t *dhd, uint8 *buf, int size)
{
        int ret = 0;
        struct file *fp = NULL;
        mm_segment_t old_fs;
        loff_t pos = 0;
        char memdump_path[128];
        char memdump_type[32];
        struct timeval curtime;
        uint32 file_mode;

        /* change to KERNEL_DS address limit */
        old_fs = get_fs();
        set_fs(KERNEL_DS);

        /* Init file name */
        memset(memdump_path, 0, sizeof(memdump_path));
        memset(memdump_type, 0, sizeof(memdump_type));
        do_gettimeofday(&curtime);
        dhd_convert_memdump_type_to_str(dhd->memdump_type, memdump_type);
#ifdef CUSTOMER_HW4_DEBUG
        snprintf(memdump_path, sizeof(memdump_path), "%s_%s_%ld.%ld",
                DHD_COMMON_DUMP_PATH "mem_dump", memdump_type,
                (unsigned long)curtime.tv_sec, (unsigned long)curtime.tv_usec);
        file_mode = O_CREAT | O_WRONLY | O_SYNC;
#elif defined(CUSTOMER_HW2)
        snprintf(memdump_path, sizeof(memdump_path), "%s_%s_%ld.%ld",
                "/data/misc/wifi/mem_dump", memdump_type,
                (unsigned long)curtime.tv_sec, (unsigned long)curtime.tv_usec);
        file_mode = O_CREAT | O_WRONLY | O_SYNC;
#else
        snprintf(memdump_path, sizeof(memdump_path), "%s_%s_%ld.%ld",
                "/installmedia/mem_dump", memdump_type,
                (unsigned long)curtime.tv_sec, (unsigned long)curtime.tv_usec);
        /* Extra flags O_DIRECT and O_SYNC are required for Brix Android, as we are
         * calling BUG_ON immediately after collecting the socram dump.
         * So the file write operation should directly write the contents into the
         * file instead of caching it. O_TRUNC flag ensures that file will be re-written
         * instead of appending.
         */
        file_mode = O_CREAT | O_WRONLY | O_DIRECT | O_SYNC | O_TRUNC;
#endif /* CUSTOMER_HW4_DEBUG */

        /* print SOCRAM dump file path */
        DHD_ERROR(("%s: memdump_path = %s\n", __FUNCTION__, memdump_path));

        /* open file to write */
        fp = filp_open(memdump_path, file_mode, 0644);
        if (IS_ERR(fp)) {
                ret = PTR_ERR(fp);
                printf("%s: open file error, err = %d\n", __FUNCTION__, ret);
                goto exit;
        }

        /* Write buf to file */
        fp->f_op->write(fp, buf, size, &pos);

exit:
        /* close file before return */
        if (!ret)
                filp_close(fp, current->files);

        /* restore previous address limit */
        set_fs(old_fs);

        /* free buf before return */
#if defined(CONFIG_DHD_USE_STATIC_BUF) && defined(DHD_USE_STATIC_MEMDUMP)
        DHD_OS_PREFREE(dhd, buf, size);
#else
        MFREE(dhd->osh, buf, size);
#endif /* CONFIG_DHD_USE_STATIC_BUF && DHD_USE_STATIC_MEMDUMP */

        return ret;
}
#endif /* DHD_DEBUG */

int dhd_os_wake_lock_timeout(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
                ret = dhd->wakelock_rx_timeout_enable > dhd->wakelock_ctrl_timeout_enable ?
                        dhd->wakelock_rx_timeout_enable : dhd->wakelock_ctrl_timeout_enable;
#ifdef CONFIG_HAS_WAKELOCK
                if (dhd->wakelock_rx_timeout_enable)
                        wake_lock_timeout(&dhd->wl_rxwake,
                                msecs_to_jiffies(dhd->wakelock_rx_timeout_enable));
                if (dhd->wakelock_ctrl_timeout_enable)
                        wake_lock_timeout(&dhd->wl_ctrlwake,
                                msecs_to_jiffies(dhd->wakelock_ctrl_timeout_enable));
#endif
                dhd->wakelock_rx_timeout_enable = 0;
                dhd->wakelock_ctrl_timeout_enable = 0;
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }
        return ret;
}

int net_os_wake_lock_timeout(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret = 0;

        if (dhd)
                ret = dhd_os_wake_lock_timeout(&dhd->pub);
        return ret;
}

int dhd_os_wake_lock_rx_timeout_enable(dhd_pub_t *pub, int val)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
                if (val > dhd->wakelock_rx_timeout_enable)
                        dhd->wakelock_rx_timeout_enable = val;
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }
        return 0;
}

int dhd_os_wake_lock_ctrl_timeout_enable(dhd_pub_t *pub, int val)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
                if (val > dhd->wakelock_ctrl_timeout_enable)
                        dhd->wakelock_ctrl_timeout_enable = val;
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }
        return 0;
}

int dhd_os_wake_lock_ctrl_timeout_cancel(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
                dhd->wakelock_ctrl_timeout_enable = 0;
#ifdef CONFIG_HAS_WAKELOCK
                if (wake_lock_active(&dhd->wl_ctrlwake))
                        wake_unlock(&dhd->wl_ctrlwake);
#endif
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }
        return 0;
}

int net_os_wake_lock_rx_timeout_enable(struct net_device *dev, int val)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret = 0;

        if (dhd)
                ret = dhd_os_wake_lock_rx_timeout_enable(&dhd->pub, val);
        return ret;
}

int net_os_wake_lock_ctrl_timeout_enable(struct net_device *dev, int val)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret = 0;

        if (dhd)
                ret = dhd_os_wake_lock_ctrl_timeout_enable(&dhd->pub, val);
        return ret;
}


#if defined(DHD_TRACE_WAKE_LOCK)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
#include <linux/hashtable.h>
#else
#include <linux/hash.h>
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0) */


#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
/* Define 2^5 = 32 bucket size hash table */
DEFINE_HASHTABLE(wklock_history, 5);
#else
/* Define 2^5 = 32 bucket size hash table */
struct hlist_head wklock_history[32] = { [0 ... 31] = HLIST_HEAD_INIT };
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0) */

int trace_wklock_onoff = 1;

typedef enum dhd_wklock_type {
        DHD_WAKE_LOCK,
        DHD_WAKE_UNLOCK,
        DHD_WAIVE_LOCK,
        DHD_RESTORE_LOCK
} dhd_wklock_t;

struct wk_trace_record {
        unsigned long addr;                 /* Address of the instruction */
        dhd_wklock_t lock_type;         /* lock_type */
        unsigned long long counter;             /* counter information */
        struct hlist_node wklock_node;  /* hash node */
};


static struct wk_trace_record *find_wklock_entry(unsigned long addr)
{
        struct wk_trace_record *wklock_info;
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
        hash_for_each_possible(wklock_history, wklock_info, wklock_node, addr)
#else
        struct hlist_node *entry;
        int index = hash_long(addr, ilog2(ARRAY_SIZE(wklock_history)));
        hlist_for_each_entry(wklock_info, entry, &wklock_history[index], wklock_node)
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0) */
        {
                if (wklock_info->addr == addr) {
                        return wklock_info;
                }
        }
        return NULL;
}

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
#define HASH_ADD(hashtable, node, key) \
        do { \
                hash_add(hashtable, node, key); \
        } while (0);
#else
#define HASH_ADD(hashtable, node, key) \
        do { \
                int index = hash_long(key, ilog2(ARRAY_SIZE(hashtable))); \
                hlist_add_head(node, &hashtable[index]); \
        } while (0);
#endif /* KERNEL_VER < KERNEL_VERSION(3, 7, 0) */

#define STORE_WKLOCK_RECORD(wklock_type) \
        do { \
                struct wk_trace_record *wklock_info = NULL; \
                unsigned long func_addr = (unsigned long)__builtin_return_address(0); \
                wklock_info = find_wklock_entry(func_addr); \
                if (wklock_info) { \
                        if (wklock_type == DHD_WAIVE_LOCK || wklock_type == DHD_RESTORE_LOCK) { \
                                wklock_info->counter = dhd->wakelock_counter; \
                        } else { \
                                wklock_info->counter++; \
                        } \
                } else { \
                        wklock_info = kzalloc(sizeof(*wklock_info), GFP_ATOMIC); \
                        if (!wklock_info) {\
                                printk("Can't allocate wk_trace_record \n"); \
                        } else { \
                                wklock_info->addr = func_addr; \
                                wklock_info->lock_type = wklock_type; \
                                if (wklock_type == DHD_WAIVE_LOCK || \
                                                wklock_type == DHD_RESTORE_LOCK) { \
                                        wklock_info->counter = dhd->wakelock_counter; \
                                } else { \
                                        wklock_info->counter++; \
                                } \
                                HASH_ADD(wklock_history, &wklock_info->wklock_node, func_addr); \
                        } \
                } \
        } while (0);

static inline void dhd_wk_lock_rec_dump(void)
{
        int bkt;
        struct wk_trace_record *wklock_info;

#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
        hash_for_each(wklock_history, bkt, wklock_info, wklock_node)
#else
        struct hlist_node *entry = NULL;
        int max_index = ARRAY_SIZE(wklock_history);
        for (bkt = 0; bkt < max_index; bkt++)
                hlist_for_each_entry(wklock_info, entry, &wklock_history[bkt], wklock_node)
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0) */
                {
                        switch (wklock_info->lock_type) {
                                case DHD_WAKE_LOCK:
                                        DHD_ERROR(("wakelock lock : %pS  lock_counter : %llu\n",
                                                (void *)wklock_info->addr, wklock_info->counter));
                                        break;
                                case DHD_WAKE_UNLOCK:
                                        DHD_ERROR(("wakelock unlock : %pS, unlock_counter : %llu\n",
                                                (void *)wklock_info->addr, wklock_info->counter));
                                        break;
                                case DHD_WAIVE_LOCK:
                                        DHD_ERROR(("wakelock waive : %pS  before_waive : %llu\n",
                                                (void *)wklock_info->addr, wklock_info->counter));
                                        break;
                                case DHD_RESTORE_LOCK:
                                        DHD_ERROR(("wakelock restore : %pS, after_waive : %llu\n",
                                                (void *)wklock_info->addr, wklock_info->counter));
                                        break;
                        }
                }
}

static void dhd_wk_lock_trace_init(struct dhd_info *dhd)
{
        unsigned long flags;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0))
        int i;
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0) */

        spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
        hash_init(wklock_history);
#else
        for (i = 0; i < ARRAY_SIZE(wklock_history); i++)
                INIT_HLIST_HEAD(&wklock_history[i]);
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0) */
        spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
}

static void dhd_wk_lock_trace_deinit(struct dhd_info *dhd)
{
        int bkt;
        struct wk_trace_record *wklock_info;
        struct hlist_node *tmp;
        unsigned long flags;
#if (LINUX_VERSION_CODE < KERNEL_VERSION(3, 7, 0))
        struct hlist_node *entry = NULL;
        int max_index = ARRAY_SIZE(wklock_history);
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0) */

        spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
        hash_for_each_safe(wklock_history, bkt, tmp, wklock_info, wklock_node)
#else
        for (bkt = 0; bkt < max_index; bkt++)
                hlist_for_each_entry_safe(wklock_info, entry, tmp,
                        &wklock_history[bkt], wklock_node)
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0)) */
                {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(3, 7, 0))
                        hash_del(&wklock_info->wklock_node);
#else
                        hlist_del_init(&wklock_info->wklock_node);
#endif /* KERNEL_VER >= KERNEL_VERSION(3, 7, 0)) */
                        kfree(wklock_info);
                }
        spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
}

void dhd_wk_lock_stats_dump(dhd_pub_t *dhdp)
{
        dhd_info_t *dhd = (dhd_info_t *)(dhdp->info);
        unsigned long flags;

        DHD_ERROR((KERN_ERR"DHD Printing wl_wake Lock/Unlock Record \r\n"));
        spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
        dhd_wk_lock_rec_dump();
        spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        DHD_ERROR((KERN_ERR"Event wakelock counter %u\n", dhd->wakelock_event_counter));
}
#else
#define STORE_WKLOCK_RECORD(wklock_type)
#endif /* ! DHD_TRACE_WAKE_LOCK */

int dhd_os_wake_lock(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
                if (dhd->wakelock_counter == 0 && !dhd->waive_wakelock) {
#ifdef CONFIG_HAS_WAKELOCK
                        wake_lock(&dhd->wl_wifi);
#elif defined(BCMSDIO) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
                        dhd_bus_dev_pm_stay_awake(pub);
#endif
                }
#ifdef DHD_TRACE_WAKE_LOCK
                if (trace_wklock_onoff) {
                        STORE_WKLOCK_RECORD(DHD_WAKE_LOCK);
                }
#endif /* DHD_TRACE_WAKE_LOCK */
                dhd->wakelock_counter++;
                ret = dhd->wakelock_counter;
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }

        return ret;
}

int dhd_event_wake_lock(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_evt_spinlock, flags);
                if (dhd->wakelock_event_counter == 0) {
#ifdef CONFIG_HAS_WAKELOCK
                        wake_lock(&dhd->wl_evtwake);
#elif defined(BCMSDIO) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
                        dhd_bus_dev_pm_stay_awake(pub);
#endif
                }
                dhd->wakelock_event_counter++;
                ret = dhd->wakelock_event_counter;
                spin_unlock_irqrestore(&dhd->wakelock_evt_spinlock, flags);
        }

        return ret;
}

int net_os_wake_lock(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret = 0;

        if (dhd)
                ret = dhd_os_wake_lock(&dhd->pub);
        return ret;
}

int dhd_os_wake_unlock(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        dhd_os_wake_lock_timeout(pub);
        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);

                if (dhd->wakelock_counter > 0) {
                        dhd->wakelock_counter--;
#ifdef DHD_TRACE_WAKE_LOCK
                        if (trace_wklock_onoff) {
                                STORE_WKLOCK_RECORD(DHD_WAKE_UNLOCK);
                        }
#endif /* DHD_TRACE_WAKE_LOCK */
                        if (dhd->wakelock_counter == 0 && !dhd->waive_wakelock) {
#ifdef CONFIG_HAS_WAKELOCK
                                wake_unlock(&dhd->wl_wifi);
#elif defined(BCMSDIO) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
                                dhd_bus_dev_pm_relax(pub);
#endif
                        }
                        ret = dhd->wakelock_counter;
                }
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }
        return ret;
}

int dhd_event_wake_unlock(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_evt_spinlock, flags);

                if (dhd->wakelock_event_counter > 0) {
                        dhd->wakelock_event_counter--;
                        if (dhd->wakelock_event_counter == 0) {
#ifdef CONFIG_HAS_WAKELOCK
                                wake_unlock(&dhd->wl_evtwake);
#elif defined(BCMSDIO) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
                                dhd_bus_dev_pm_relax(pub);
#endif
                        }
                        ret = dhd->wakelock_event_counter;
                }
                spin_unlock_irqrestore(&dhd->wakelock_evt_spinlock, flags);
        }
        return ret;
}

int dhd_os_check_wakelock(dhd_pub_t *pub)
{
#if defined(CONFIG_HAS_WAKELOCK) || (defined(BCMSDIO) && (LINUX_VERSION_CODE > \
        KERNEL_VERSION(2, 6, 36)))
        dhd_info_t *dhd;

        if (!pub)
                return 0;
        dhd = (dhd_info_t *)(pub->info);
#endif /* CONFIG_HAS_WAKELOCK || BCMSDIO */

#ifdef CONFIG_HAS_WAKELOCK
        /* Indicate to the SD Host to avoid going to suspend if internal locks are up */
        if (dhd && (wake_lock_active(&dhd->wl_wifi) ||
                (wake_lock_active(&dhd->wl_wdwake))))
                return 1;
#elif defined(BCMSDIO) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
        if (dhd && (dhd->wakelock_counter > 0) && dhd_bus_dev_pm_enabled(pub))
                return 1;
#endif
        return 0;
}

int
dhd_os_check_wakelock_all(dhd_pub_t *pub)
{
#ifdef CONFIG_HAS_WAKELOCK
        int l1, l2, l3, l4, l7;
        int l5 = 0, l6 = 0;
        int c, lock_active;
#endif /* CONFIG_HAS_WAKELOCK */
#if defined(CONFIG_HAS_WAKELOCK) || (defined(BCMSDIO) && (LINUX_VERSION_CODE > \
        KERNEL_VERSION(2, 6, 36)))
        dhd_info_t *dhd;

        if (!pub) {
                return 0;
        }
        dhd = (dhd_info_t *)(pub->info);
        if (!dhd) {
                return 0;
        }
#endif /* CONFIG_HAS_WAKELOCK || BCMSDIO */

#ifdef CONFIG_HAS_WAKELOCK
        c = dhd->wakelock_counter;
        l1 = wake_lock_active(&dhd->wl_wifi);
        l2 = wake_lock_active(&dhd->wl_wdwake);
        l3 = wake_lock_active(&dhd->wl_rxwake);
        l4 = wake_lock_active(&dhd->wl_ctrlwake);
#ifdef BCMPCIE_OOB_HOST_WAKE
        l5 = wake_lock_active(&dhd->wl_intrwake);
#endif /* BCMPCIE_OOB_HOST_WAKE */
#ifdef DHD_USE_SCAN_WAKELOCK
        l6 = wake_lock_active(&dhd->wl_scanwake);
#endif /* DHD_USE_SCAN_WAKELOCK */
        l7 = wake_lock_active(&dhd->wl_evtwake);
        lock_active = (l1 || l2 || l3 || l4 || l5 || l6 || l7);

        /* Indicate to the Host to avoid going to suspend if internal locks are up */
        if (dhd && lock_active) {
                DHD_ERROR(("%s wakelock c-%d wl-%d wd-%d rx-%d "
                        "ctl-%d intr-%d scan-%d evt-%d\n",
                        __FUNCTION__, c, l1, l2, l3, l4, l5, l6, l7));
                return 1;
        }
#elif defined(BCMSDIO) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
        if (dhd && (dhd->wakelock_counter > 0) && dhd_bus_dev_pm_enabled(pub)) {
                return 1;
        }
#endif /* CONFIG_HAS_WAKELOCK */
        return 0;
}

int net_os_wake_unlock(struct net_device *dev)
{
        dhd_info_t *dhd = DHD_DEV_INFO(dev);
        int ret = 0;

        if (dhd)
                ret = dhd_os_wake_unlock(&dhd->pub);
        return ret;
}

int dhd_os_wd_wake_lock(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
#ifdef CONFIG_HAS_WAKELOCK
                /* if wakelock_wd_counter was never used : lock it at once */
                if (!dhd->wakelock_wd_counter)
                        wake_lock(&dhd->wl_wdwake);
#endif
                dhd->wakelock_wd_counter++;
                ret = dhd->wakelock_wd_counter;
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }
        return ret;
}

int dhd_os_wd_wake_unlock(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
                if (dhd->wakelock_wd_counter) {
                        dhd->wakelock_wd_counter = 0;
#ifdef CONFIG_HAS_WAKELOCK
                        wake_unlock(&dhd->wl_wdwake);
#endif
                }
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }
        return ret;
}

#ifdef BCMPCIE_OOB_HOST_WAKE
void
dhd_os_oob_irq_wake_lock_timeout(dhd_pub_t *pub, int val)
{
#ifdef CONFIG_HAS_WAKELOCK
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
                wake_lock_timeout(&dhd->wl_intrwake, msecs_to_jiffies(val));
        }
#endif /* CONFIG_HAS_WAKELOCK */
}

void
dhd_os_oob_irq_wake_unlock(dhd_pub_t *pub)
{
#ifdef CONFIG_HAS_WAKELOCK
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
                /* if wl_intrwake is active, unlock it */
                if (wake_lock_active(&dhd->wl_intrwake)) {
                        wake_unlock(&dhd->wl_intrwake);
                }
        }
#endif /* CONFIG_HAS_WAKELOCK */
}
#endif /* BCMPCIE_OOB_HOST_WAKE */

#ifdef DHD_USE_SCAN_WAKELOCK
void
dhd_os_scan_wake_lock_timeout(dhd_pub_t *pub, int val)
{
#ifdef CONFIG_HAS_WAKELOCK
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
                wake_lock_timeout(&dhd->wl_scanwake, msecs_to_jiffies(val));
        }
#endif /* CONFIG_HAS_WAKELOCK */
}

void
dhd_os_scan_wake_unlock(dhd_pub_t *pub)
{
#ifdef CONFIG_HAS_WAKELOCK
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);

        if (dhd) {
                /* if wl_scanwake is active, unlock it */
                if (wake_lock_active(&dhd->wl_scanwake)) {
                        wake_unlock(&dhd->wl_scanwake);
                }
        }
#endif /* CONFIG_HAS_WAKELOCK */
}
#endif /* DHD_USE_SCAN_WAKELOCK */

/* waive wakelocks for operations such as IOVARs in suspend function, must be closed
 * by a paired function call to dhd_wakelock_restore. returns current wakelock counter
 */
int dhd_os_wake_lock_waive(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        if (dhd) {
                spin_lock_irqsave(&dhd->wakelock_spinlock, flags);

                /* dhd_wakelock_waive/dhd_wakelock_restore must be paired */
                if (dhd->waive_wakelock == FALSE) {
#ifdef DHD_TRACE_WAKE_LOCK
                        if (trace_wklock_onoff) {
                                STORE_WKLOCK_RECORD(DHD_WAIVE_LOCK);
                        }
#endif /* DHD_TRACE_WAKE_LOCK */
                        /* record current lock status */
                        dhd->wakelock_before_waive = dhd->wakelock_counter;
                        dhd->waive_wakelock = TRUE;
                }
                ret = dhd->wakelock_wd_counter;
                spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        }
        return ret;
}

int dhd_os_wake_lock_restore(dhd_pub_t *pub)
{
        dhd_info_t *dhd = (dhd_info_t *)(pub->info);
        unsigned long flags;
        int ret = 0;

        if (!dhd)
                return 0;

        spin_lock_irqsave(&dhd->wakelock_spinlock, flags);

        /* dhd_wakelock_waive/dhd_wakelock_restore must be paired */
        if (!dhd->waive_wakelock)
                goto exit;

        dhd->waive_wakelock = FALSE;
        /* if somebody else acquires wakelock between dhd_wakelock_waive/dhd_wakelock_restore,
         * we need to make it up by calling wake_lock or pm_stay_awake. or if somebody releases
         * the lock in between, do the same by calling wake_unlock or pm_relax
         */
#ifdef DHD_TRACE_WAKE_LOCK
        if (trace_wklock_onoff) {
                STORE_WKLOCK_RECORD(DHD_RESTORE_LOCK);
        }
#endif /* DHD_TRACE_WAKE_LOCK */

        if (dhd->wakelock_before_waive == 0 && dhd->wakelock_counter > 0) {
#ifdef CONFIG_HAS_WAKELOCK
                wake_lock(&dhd->wl_wifi);
#elif defined(BCMSDIO) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
                dhd_bus_dev_pm_stay_awake(&dhd->pub);
#endif
        } else if (dhd->wakelock_before_waive > 0 && dhd->wakelock_counter == 0) {
#ifdef CONFIG_HAS_WAKELOCK
                wake_unlock(&dhd->wl_wifi);
#elif defined(BCMSDIO) && (LINUX_VERSION_CODE > KERNEL_VERSION(2, 6, 36))
                dhd_bus_dev_pm_relax(&dhd->pub);
#endif
        }
        dhd->wakelock_before_waive = 0;
exit:
        ret = dhd->wakelock_wd_counter;
        spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        return ret;
}

void dhd_os_wake_lock_init(struct dhd_info *dhd)
{
        DHD_TRACE(("%s: initialize wake_lock_counters\n", __FUNCTION__));
        dhd->wakelock_event_counter = 0;
        dhd->wakelock_counter = 0;
        dhd->wakelock_rx_timeout_enable = 0;
        dhd->wakelock_ctrl_timeout_enable = 0;
#ifdef CONFIG_HAS_WAKELOCK
        wake_lock_init(&dhd->wl_wifi, WAKE_LOCK_SUSPEND, "wlan_wake");
        wake_lock_init(&dhd->wl_rxwake, WAKE_LOCK_SUSPEND, "wlan_rx_wake");
        wake_lock_init(&dhd->wl_ctrlwake, WAKE_LOCK_SUSPEND, "wlan_ctrl_wake");
        wake_lock_init(&dhd->wl_evtwake, WAKE_LOCK_SUSPEND, "wlan_evt_wake");
#ifdef BCMPCIE_OOB_HOST_WAKE
        wake_lock_init(&dhd->wl_intrwake, WAKE_LOCK_SUSPEND, "wlan_oob_irq_wake");
#endif /* BCMPCIE_OOB_HOST_WAKE */
#ifdef DHD_USE_SCAN_WAKELOCK
        wake_lock_init(&dhd->wl_scanwake, WAKE_LOCK_SUSPEND, "wlan_scan_wake");
#endif /* DHD_USE_SCAN_WAKELOCK */
#endif /* CONFIG_HAS_WAKELOCK */
#ifdef DHD_TRACE_WAKE_LOCK
        dhd_wk_lock_trace_init(dhd);
#endif /* DHD_TRACE_WAKE_LOCK */
}

void dhd_os_wake_lock_destroy(struct dhd_info *dhd)
{
        DHD_TRACE(("%s: deinit wake_lock_counters\n", __FUNCTION__));
#ifdef CONFIG_HAS_WAKELOCK
        dhd->wakelock_event_counter = 0;
        dhd->wakelock_counter = 0;
        dhd->wakelock_rx_timeout_enable = 0;
        dhd->wakelock_ctrl_timeout_enable = 0;
        wake_lock_destroy(&dhd->wl_wifi);
        wake_lock_destroy(&dhd->wl_rxwake);
        wake_lock_destroy(&dhd->wl_ctrlwake);
        wake_lock_destroy(&dhd->wl_evtwake);
#ifdef BCMPCIE_OOB_HOST_WAKE
        wake_lock_destroy(&dhd->wl_intrwake);
#endif /* BCMPCIE_OOB_HOST_WAKE */
#ifdef DHD_USE_SCAN_WAKELOCK
        wake_lock_destroy(&dhd->wl_scanwake);
#endif /* DHD_USE_SCAN_WAKELOCK */
#ifdef DHD_TRACE_WAKE_LOCK
        dhd_wk_lock_trace_deinit(dhd);
#endif /* DHD_TRACE_WAKE_LOCK */
#endif /* CONFIG_HAS_WAKELOCK */
}

bool dhd_os_check_if_up(dhd_pub_t *pub)
{
        if (!pub)
                return FALSE;
        return pub->up;
}

/* function to collect firmware, chip id and chip version info */
void dhd_set_version_info(dhd_pub_t *dhdp, char *fw)
{
        int i;

        i = snprintf(info_string, sizeof(info_string),
                "  Driver: %s\n  Firmware: %s ", EPI_VERSION_STR, fw);
        printf("%s\n", info_string);

        if (!dhdp)
                return;

        i = snprintf(&info_string[i], sizeof(info_string) - i,
                "\n  Chip: %x Rev %x Pkg %x", dhd_bus_chip_id(dhdp),
                dhd_bus_chiprev_id(dhdp), dhd_bus_chippkg_id(dhdp));
}

int dhd_ioctl_entry_local(struct net_device *net, wl_ioctl_t *ioc, int cmd)
{
        int ifidx;
        int ret = 0;
        dhd_info_t *dhd = NULL;

        if (!net || !DEV_PRIV(net)) {
                DHD_ERROR(("%s invalid parameter\n", __FUNCTION__));
                return -EINVAL;
        }

        dhd = DHD_DEV_INFO(net);
        if (!dhd)
                return -EINVAL;

        ifidx = dhd_net2idx(dhd, net);
        if (ifidx == DHD_BAD_IF) {
                DHD_ERROR(("%s bad ifidx\n", __FUNCTION__));
                return -ENODEV;
        }

        DHD_OS_WAKE_LOCK(&dhd->pub);
        DHD_PERIM_LOCK(&dhd->pub);

        ret = dhd_wl_ioctl(&dhd->pub, ifidx, ioc, ioc->buf, ioc->len);
        dhd_check_hang(net, &dhd->pub, ret);

        DHD_PERIM_UNLOCK(&dhd->pub);
        DHD_OS_WAKE_UNLOCK(&dhd->pub);

        return ret;
}

bool dhd_os_check_hang(dhd_pub_t *dhdp, int ifidx, int ret)
{
        struct net_device *net;

        net = dhd_idx2net(dhdp, ifidx);
        if (!net) {
                DHD_ERROR(("%s : Invalid index : %d\n", __FUNCTION__, ifidx));
                return -EINVAL;
        }

        return dhd_check_hang(net, dhdp, ret);
}

/* Return instance */
int dhd_get_instance(dhd_pub_t *dhdp)
{
        return dhdp->info->unit;
}


#ifdef PROP_TXSTATUS

void dhd_wlfc_plat_init(void *dhd)
{
#ifdef USE_DYNAMIC_F2_BLKSIZE
        dhdsdio_func_blocksize((dhd_pub_t *)dhd, 2, DYNAMIC_F2_BLKSIZE_FOR_NONLEGACY);
#endif /* USE_DYNAMIC_F2_BLKSIZE */
        return;
}

void dhd_wlfc_plat_deinit(void *dhd)
{
#ifdef USE_DYNAMIC_F2_BLKSIZE
        dhdsdio_func_blocksize((dhd_pub_t *)dhd, 2, sd_f2_blocksize);
#endif /* USE_DYNAMIC_F2_BLKSIZE */
        return;
}

bool dhd_wlfc_skip_fc(void)
{
#ifdef SKIP_WLFC_ON_CONCURRENT
#ifdef WL_CFG80211

        /* enable flow control in vsdb mode */
        return !(wl_cfg80211_is_concurrent_mode());
#else
        return TRUE; /* skip flow control */
#endif /* WL_CFG80211 */

#else
        return FALSE;
#endif /* SKIP_WLFC_ON_CONCURRENT */
}
#endif /* PROP_TXSTATUS */

#ifdef BCMDBGFS
#include <linux/debugfs.h>

typedef struct dhd_dbgfs {
        struct dentry   *debugfs_dir;
        struct dentry   *debugfs_mem;
        dhd_pub_t       *dhdp;
        uint32          size;
} dhd_dbgfs_t;

dhd_dbgfs_t g_dbgfs;

extern uint32 dhd_readregl(void *bp, uint32 addr);
extern uint32 dhd_writeregl(void *bp, uint32 addr, uint32 data);

static int
dhd_dbg_state_open(struct inode *inode, struct file *file)
{
        file->private_data = inode->i_private;
        return 0;
}

static ssize_t
dhd_dbg_state_read(struct file *file, char __user *ubuf,
                       size_t count, loff_t *ppos)
{
        ssize_t rval;
        uint32 tmp;
        loff_t pos = *ppos;
        size_t ret;

        if (pos < 0)
                return -EINVAL;
        if (pos >= g_dbgfs.size || !count)
                return 0;
        if (count > g_dbgfs.size - pos)
                count = g_dbgfs.size - pos;

        /* Basically enforce aligned 4 byte reads. It's up to the user to work out the details */
        tmp = dhd_readregl(g_dbgfs.dhdp->bus, file->f_pos & (~3));

        ret = copy_to_user(ubuf, &tmp, 4);
        if (ret == count)
                return -EFAULT;

        count -= ret;
        *ppos = pos + count;
        rval = count;

        return rval;
}


static ssize_t
dhd_debugfs_write(struct file *file, const char __user *ubuf, size_t count, loff_t *ppos)
{
        loff_t pos = *ppos;
        size_t ret;
        uint32 buf;

        if (pos < 0)
                return -EINVAL;
        if (pos >= g_dbgfs.size || !count)
                return 0;
        if (count > g_dbgfs.size - pos)
                count = g_dbgfs.size - pos;

        ret = copy_from_user(&buf, ubuf, sizeof(uint32));
        if (ret == count)
                return -EFAULT;

        /* Basically enforce aligned 4 byte writes. It's up to the user to work out the details */
        dhd_writeregl(g_dbgfs.dhdp->bus, file->f_pos & (~3), buf);

        return count;
}


loff_t
dhd_debugfs_lseek(struct file *file, loff_t off, int whence)
{
        loff_t pos = -1;

        switch (whence) {
                case 0:
                        pos = off;
                        break;
                case 1:
                        pos = file->f_pos + off;
                        break;
                case 2:
                        pos = g_dbgfs.size - off;
        }
        return (pos < 0 || pos > g_dbgfs.size) ? -EINVAL : (file->f_pos = pos);
}

static const struct file_operations dhd_dbg_state_ops = {
        .read   = dhd_dbg_state_read,
        .write  = dhd_debugfs_write,
        .open   = dhd_dbg_state_open,
        .llseek = dhd_debugfs_lseek
};

static void dhd_dbg_create(void)
{
        if (g_dbgfs.debugfs_dir) {
                g_dbgfs.debugfs_mem = debugfs_create_file("mem", 0644, g_dbgfs.debugfs_dir,
                        NULL, &dhd_dbg_state_ops);
        }
}

void dhd_dbg_init(dhd_pub_t *dhdp)
{
        g_dbgfs.dhdp = dhdp;
        g_dbgfs.size = 0x20000000; /* Allow access to various cores regs */

        g_dbgfs.debugfs_dir = debugfs_create_dir("dhd", 0);
        if (IS_ERR(g_dbgfs.debugfs_dir)) {
                g_dbgfs.debugfs_dir = NULL;
                return;
        }

        dhd_dbg_create();

        return;
}

void dhd_dbg_remove(void)
{
        debugfs_remove(g_dbgfs.debugfs_mem);
        debugfs_remove(g_dbgfs.debugfs_dir);

        bzero((unsigned char *) &g_dbgfs, sizeof(g_dbgfs));
}
#endif /* BCMDBGFS */

#ifdef WLMEDIA_HTSF

static
void dhd_htsf_addtxts(dhd_pub_t *dhdp, void *pktbuf)
{
        dhd_info_t *dhd = (dhd_info_t *)(dhdp->info);
        struct sk_buff *skb;
        uint32 htsf = 0;
        uint16 dport = 0, oldmagic = 0xACAC;
        char *p1;
        htsfts_t ts;

        /*  timestamp packet  */

        p1 = (char*) PKTDATA(dhdp->osh, pktbuf);

        if (PKTLEN(dhdp->osh, pktbuf) > HTSF_MINLEN) {
/*              memcpy(&proto, p1+26, 4);       */
                memcpy(&dport, p1+40, 2);
/*      proto = ((ntoh32(proto))>> 16) & 0xFF;  */
                dport = ntoh16(dport);
        }

        /* timestamp only if  icmp or udb iperf with port 5555 */
/*      if (proto == 17 && dport == tsport) { */
        if (dport >= tsport && dport <= tsport + 20) {

                skb = (struct sk_buff *) pktbuf;

                htsf = dhd_get_htsf(dhd, 0);
                memset(skb->data + 44, 0, 2); /* clear checksum */
                memcpy(skb->data+82, &oldmagic, 2);
                memcpy(skb->data+84, &htsf, 4);

                memset(&ts, 0, sizeof(htsfts_t));
                ts.magic  = HTSFMAGIC;
                ts.prio   = PKTPRIO(pktbuf);
                ts.seqnum = htsf_seqnum++;
                ts.c10    = get_cycles();
                ts.t10    = htsf;
                ts.endmagic = HTSFENDMAGIC;

                memcpy(skb->data + HTSF_HOSTOFFSET, &ts, sizeof(ts));
        }
}

static void dhd_dump_htsfhisto(histo_t *his, char *s)
{
        int pktcnt = 0, curval = 0, i;
        for (i = 0; i < (NUMBIN-2); i++) {
                curval += 500;
                printf("%d ",  his->bin[i]);
                pktcnt += his->bin[i];
        }
        printf(" max: %d TotPkt: %d neg: %d [%s]\n", his->bin[NUMBIN-2], pktcnt,
                his->bin[NUMBIN-1], s);
}

static
void sorttobin(int value, histo_t *histo)
{
        int i, binval = 0;

        if (value < 0) {
                histo->bin[NUMBIN-1]++;
                return;
        }
        if (value > histo->bin[NUMBIN-2])  /* store the max value  */
                histo->bin[NUMBIN-2] = value;

        for (i = 0; i < (NUMBIN-2); i++) {
                binval += 500; /* 500m s bins */
                if (value <= binval) {
                        histo->bin[i]++;
                        return;
                }
        }
        histo->bin[NUMBIN-3]++;
}

static
void dhd_htsf_addrxts(dhd_pub_t *dhdp, void *pktbuf)
{
        dhd_info_t *dhd = (dhd_info_t *)dhdp->info;
        struct sk_buff *skb;
        char *p1;
        uint16 old_magic;
        int d1, d2, d3, end2end;
        htsfts_t *htsf_ts;
        uint32 htsf;

        skb = PKTTONATIVE(dhdp->osh, pktbuf);
        p1 = (char*)PKTDATA(dhdp->osh, pktbuf);

        if (PKTLEN(osh, pktbuf) > HTSF_MINLEN) {
                memcpy(&old_magic, p1+78, 2);
                htsf_ts = (htsfts_t*) (p1 + HTSF_HOSTOFFSET - 4);
        } else {
                return;
        }
        if (htsf_ts->magic == HTSFMAGIC) {
                htsf_ts->tE0 = dhd_get_htsf(dhd, 0);
                htsf_ts->cE0 = get_cycles();
        }

        if (old_magic == 0xACAC) {

                tspktcnt++;
                htsf = dhd_get_htsf(dhd, 0);
                memcpy(skb->data+92, &htsf, sizeof(uint32));

                memcpy(&ts[tsidx].t1, skb->data+80, 16);

                d1 = ts[tsidx].t2 - ts[tsidx].t1;
                d2 = ts[tsidx].t3 - ts[tsidx].t2;
                d3 = ts[tsidx].t4 - ts[tsidx].t3;
                end2end = ts[tsidx].t4 - ts[tsidx].t1;

                sorttobin(d1, &vi_d1);
                sorttobin(d2, &vi_d2);
                sorttobin(d3, &vi_d3);
                sorttobin(end2end, &vi_d4);

                if (end2end > 0 && end2end >  maxdelay) {
                        maxdelay = end2end;
                        maxdelaypktno = tspktcnt;
                        memcpy(&maxdelayts, &ts[tsidx], 16);
                }
                if (++tsidx >= TSMAX)
                        tsidx = 0;
        }
}

uint32 dhd_get_htsf(dhd_info_t *dhd, int ifidx)
{
        uint32 htsf = 0, cur_cycle, delta, delta_us;
        uint32    factor, baseval, baseval2;
        cycles_t t;

        t = get_cycles();
        cur_cycle = t;

        if (cur_cycle >  dhd->htsf.last_cycle) {
                delta = cur_cycle -  dhd->htsf.last_cycle;
        } else {
                delta = cur_cycle + (0xFFFFFFFF -  dhd->htsf.last_cycle);
        }

        delta = delta >> 4;

        if (dhd->htsf.coef) {
                /* times ten to get the first digit */
                factor = (dhd->htsf.coef*10 + dhd->htsf.coefdec1);
                baseval  = (delta*10)/factor;
                baseval2 = (delta*10)/(factor+1);
                delta_us  = (baseval -  (((baseval - baseval2) * dhd->htsf.coefdec2)) / 10);
                htsf = (delta_us << 4) +  dhd->htsf.last_tsf + HTSF_BUS_DELAY;
        } else {
                DHD_ERROR(("-------dhd->htsf.coef = 0 -------\n"));
        }

        return htsf;
}

static void dhd_dump_latency(void)
{
        int i, max = 0;
        int d1, d2, d3, d4, d5;

        printf("T1       T2       T3       T4           d1  d2   t4-t1     i    \n");
        for (i = 0; i < TSMAX; i++) {
                d1 = ts[i].t2 - ts[i].t1;
                d2 = ts[i].t3 - ts[i].t2;
                d3 = ts[i].t4 - ts[i].t3;
                d4 = ts[i].t4 - ts[i].t1;
                d5 = ts[max].t4-ts[max].t1;
                if (d4 > d5 && d4 > 0)  {
                        max = i;
                }
                printf("%08X %08X %08X %08X \t%d %d %d   %d i=%d\n",
                        ts[i].t1, ts[i].t2, ts[i].t3, ts[i].t4,
                        d1, d2, d3, d4, i);
        }

        printf("current idx = %d \n", tsidx);

        printf("Highest latency %d pkt no.%d total=%d\n", maxdelay, maxdelaypktno, tspktcnt);
        printf("%08X %08X %08X %08X \t%d %d %d   %d\n",
        maxdelayts.t1, maxdelayts.t2, maxdelayts.t3, maxdelayts.t4,
        maxdelayts.t2 - maxdelayts.t1,
        maxdelayts.t3 - maxdelayts.t2,
        maxdelayts.t4 - maxdelayts.t3,
        maxdelayts.t4 - maxdelayts.t1);
}


static int
dhd_ioctl_htsf_get(dhd_info_t *dhd, int ifidx)
{
        wl_ioctl_t ioc;
        char buf[32];
        int ret;
        uint32 s1, s2;

        struct tsf {
                uint32 low;
                uint32 high;
        } tsf_buf;

        memset(&ioc, 0, sizeof(ioc));
        memset(&tsf_buf, 0, sizeof(tsf_buf));

        ioc.cmd = WLC_GET_VAR;
        ioc.buf = buf;
        ioc.len = (uint)sizeof(buf);
        ioc.set = FALSE;

        strncpy(buf, "tsf", sizeof(buf) - 1);
        buf[sizeof(buf) - 1] = '\0';
        s1 = dhd_get_htsf(dhd, 0);
        if ((ret = dhd_wl_ioctl(&dhd->pub, ifidx, &ioc, ioc.buf, ioc.len)) < 0) {
                if (ret == -EIO) {
                        DHD_ERROR(("%s: tsf is not supported by device\n",
                                dhd_ifname(&dhd->pub, ifidx)));
                        return -EOPNOTSUPP;
                }
                return ret;
        }
        s2 = dhd_get_htsf(dhd, 0);

        memcpy(&tsf_buf, buf, sizeof(tsf_buf));
        printf(" TSF_h=%04X lo=%08X Calc:htsf=%08X, coef=%d.%d%d delta=%d ",
                tsf_buf.high, tsf_buf.low, s2, dhd->htsf.coef, dhd->htsf.coefdec1,
                dhd->htsf.coefdec2, s2-tsf_buf.low);
        printf("lasttsf=%08X lastcycle=%08X\n", dhd->htsf.last_tsf, dhd->htsf.last_cycle);
        return 0;
}

void htsf_update(dhd_info_t *dhd, void *data)
{
        static ulong  cur_cycle = 0, prev_cycle = 0;
        uint32 htsf, tsf_delta = 0;
        uint32 hfactor = 0, cyc_delta, dec1 = 0, dec2, dec3, tmp;
        ulong b, a;
        cycles_t t;

        /* cycles_t in inlcude/mips/timex.h */

        t = get_cycles();

        prev_cycle = cur_cycle;
        cur_cycle = t;

        if (cur_cycle > prev_cycle)
                cyc_delta = cur_cycle - prev_cycle;
        else {
                b = cur_cycle;
                a = prev_cycle;
                cyc_delta = cur_cycle + (0xFFFFFFFF - prev_cycle);
        }

        if (data == NULL)
                printf(" tsf update ata point er is null \n");

        memcpy(&prev_tsf, &cur_tsf, sizeof(tsf_t));
        memcpy(&cur_tsf, data, sizeof(tsf_t));

        if (cur_tsf.low == 0) {
                DHD_INFO((" ---- 0 TSF, do not update, return\n"));
                return;
        }

        if (cur_tsf.low > prev_tsf.low)
                tsf_delta = (cur_tsf.low - prev_tsf.low);
        else {
                DHD_INFO((" ---- tsf low is smaller cur_tsf= %08X, prev_tsf=%08X, \n",
                 cur_tsf.low, prev_tsf.low));
                if (cur_tsf.high > prev_tsf.high) {
                        tsf_delta = cur_tsf.low + (0xFFFFFFFF - prev_tsf.low);
                        DHD_INFO((" ---- Wrap around tsf coutner  adjusted TSF=%08X\n", tsf_delta));
                } else {
                        return; /* do not update */
                }
        }

        if (tsf_delta)  {
                hfactor = cyc_delta / tsf_delta;
                tmp  =  (cyc_delta - (hfactor * tsf_delta))*10;
                dec1 =  tmp/tsf_delta;
                dec2 =  ((tmp - dec1*tsf_delta)*10) / tsf_delta;
                tmp  =  (tmp   - (dec1*tsf_delta))*10;
                dec3 =  ((tmp - dec2*tsf_delta)*10) / tsf_delta;

                if (dec3 > 4) {
                        if (dec2 == 9) {
                                dec2 = 0;
                                if (dec1 == 9) {
                                        dec1 = 0;
                                        hfactor++;
                                } else {
                                        dec1++;
                                }
                        } else {
                                dec2++;
                        }
                }
        }

        if (hfactor) {
                htsf = ((cyc_delta * 10)  / (hfactor*10+dec1)) + prev_tsf.low;
                dhd->htsf.coef = hfactor;
                dhd->htsf.last_cycle = cur_cycle;
                dhd->htsf.last_tsf = cur_tsf.low;
                dhd->htsf.coefdec1 = dec1;
                dhd->htsf.coefdec2 = dec2;
        } else {
                htsf = prev_tsf.low;
        }
}

#endif /* WLMEDIA_HTSF */

#ifdef CUSTOM_SET_CPUCORE
void dhd_set_cpucore(dhd_pub_t *dhd, int set)
{
        int e_dpc = 0, e_rxf = 0, retry_set = 0;

        if (!(dhd->chan_isvht80)) {
                DHD_ERROR(("%s: chan_status(%d) cpucore!!!\n", __FUNCTION__, dhd->chan_isvht80));
                return;
        }

        if (DPC_CPUCORE) {
                do {
                        if (set == TRUE) {
                                e_dpc = set_cpus_allowed_ptr(dhd->current_dpc,
                                        cpumask_of(DPC_CPUCORE));
                        } else {
                                e_dpc = set_cpus_allowed_ptr(dhd->current_dpc,
                                        cpumask_of(PRIMARY_CPUCORE));
                        }
                        if (retry_set++ > MAX_RETRY_SET_CPUCORE) {
                                DHD_ERROR(("%s: dpc(%d) invalid cpu!\n", __FUNCTION__, e_dpc));
                                return;
                        }
                        if (e_dpc < 0)
                                OSL_SLEEP(1);
                } while (e_dpc < 0);
        }
        if (RXF_CPUCORE) {
                do {
                        if (set == TRUE) {
                                e_rxf = set_cpus_allowed_ptr(dhd->current_rxf,
                                        cpumask_of(RXF_CPUCORE));
                        } else {
                                e_rxf = set_cpus_allowed_ptr(dhd->current_rxf,
                                        cpumask_of(PRIMARY_CPUCORE));
                        }
                        if (retry_set++ > MAX_RETRY_SET_CPUCORE) {
                                DHD_ERROR(("%s: rxf(%d) invalid cpu!\n", __FUNCTION__, e_rxf));
                                return;
                        }
                        if (e_rxf < 0)
                                OSL_SLEEP(1);
                } while (e_rxf < 0);
        }
#ifdef DHD_OF_SUPPORT
        interrupt_set_cpucore(set);
#endif /* DHD_OF_SUPPORT */
        DHD_TRACE(("%s: set(%d) cpucore success!\n", __FUNCTION__, set));

        return;
}
#endif /* CUSTOM_SET_CPUCORE */

/* Get interface specific ap_isolate configuration */
int dhd_get_ap_isolate(dhd_pub_t *dhdp, uint32 idx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];

        return ifp->ap_isolate;
}

/* Set interface specific ap_isolate configuration */
int dhd_set_ap_isolate(dhd_pub_t *dhdp, uint32 idx, int val)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];

        ifp->ap_isolate = val;

        return 0;
}

#ifdef DHD_FW_COREDUMP


#ifdef CUSTOMER_HW4_DEBUG
#ifdef PLATFORM_SLP
#define MEMDUMPINFO "/opt/etc/.memdump.info"
#else
#define MEMDUMPINFO "/data/.memdump.info"
#endif /* PLATFORM_SLP */
#elif defined(CUSTOMER_HW2)
#define MEMDUMPINFO "/data/misc/wifi/.memdump.info"
#else
#define MEMDUMPINFO "/installmedia/.memdump.info"
#endif /* CUSTOMER_HW4_DEBUG */

void dhd_get_memdump_info(dhd_pub_t *dhd)
{
        struct file *fp = NULL;
        uint32 mem_val = DUMP_MEMFILE_MAX;
        int ret = 0;
        char *filepath = MEMDUMPINFO;

        /* Read memdump info from the file */
        fp = filp_open(filepath, O_RDONLY, 0);
        if (IS_ERR(fp)) {
                DHD_ERROR(("%s: File [%s] doesn't exist\n", __FUNCTION__, filepath));
                goto done;
        } else {
                ret = kernel_read(fp, 0, (char *)&mem_val, 4);
                if (ret < 0) {
                        DHD_ERROR(("%s: File read error, ret=%d\n", __FUNCTION__, ret));
                        filp_close(fp, NULL);
                        goto done;
                }

                mem_val = bcm_atoi((char *)&mem_val);

                DHD_ERROR(("%s: MEMDUMP ENABLED = %d\n", __FUNCTION__, mem_val));
                filp_close(fp, NULL);
        }

done:
#ifdef CUSTOMER_HW4_DEBUG
        dhd->memdump_enabled = (mem_val < DUMP_MEMFILE_MAX) ? mem_val : DUMP_DISABLED;
#else
        dhd->memdump_enabled = (mem_val < DUMP_MEMFILE_MAX) ? mem_val : DUMP_MEMFILE_BUGON;
#endif /* CUSTOMER_HW4_DEBUG */
}


void dhd_schedule_memdump(dhd_pub_t *dhdp, uint8 *buf, uint32 size)
{
        dhd_dump_t *dump = NULL;
        dump = (dhd_dump_t *)MALLOC(dhdp->osh, sizeof(dhd_dump_t));
        if (dump == NULL) {
                DHD_ERROR(("%s: dhd dump memory allocation failed\n", __FUNCTION__));
                return;
        }
        dump->buf = buf;
        dump->bufsize = size;

#if defined(CONFIG_ARM64)
        DHD_ERROR(("%s: buf(va)=%llx, buf(pa)=%llx, bufsize=%d\n", __FUNCTION__,
                (uint64)buf, (uint64)__virt_to_phys((ulong)buf), size));
#elif defined(__ARM_ARCH_7A__)
        DHD_ERROR(("%s: buf(va)=%x, buf(pa)=%x, bufsize=%d\n", __FUNCTION__,
                (uint32)buf, (uint32)__virt_to_phys((ulong)buf), size));
#endif /* __ARM_ARCH_7A__ */
        if (dhdp->memdump_enabled == DUMP_MEMONLY) {
                BUG_ON(1);
        }

#ifdef DHD_LOG_DUMP
        if (dhdp->memdump_type != DUMP_TYPE_BY_SYSDUMP) {
                dhd_schedule_log_dump(dhdp);
        }
#endif /* DHD_LOG_DUMP */
        dhd_deferred_schedule_work(dhdp->info->dhd_deferred_wq, (void *)dump,
                DHD_WQ_WORK_SOC_RAM_DUMP, dhd_mem_dump, DHD_WORK_PRIORITY_HIGH);
}
static void
dhd_mem_dump(void *handle, void *event_info, u8 event)
{
        dhd_info_t *dhd = handle;
        dhd_dump_t *dump = event_info;

        if (!dhd) {
                DHD_ERROR(("%s: dhd is NULL\n", __FUNCTION__));
                return;
        }

        if (!dump) {
                DHD_ERROR(("%s: dump is NULL\n", __FUNCTION__));
                return;
        }

        if (write_to_file(&dhd->pub, dump->buf, dump->bufsize)) {
                DHD_ERROR(("%s: writing SoC_RAM dump to the file failed\n", __FUNCTION__));
        }

        if (dhd->pub.memdump_enabled == DUMP_MEMFILE_BUGON &&
#ifdef DHD_LOG_DUMP
                dhd->pub.memdump_type != DUMP_TYPE_BY_SYSDUMP &&
#endif
                TRUE) {
                BUG_ON(1);
        }
        MFREE(dhd->pub.osh, dump, sizeof(dhd_dump_t));
}
#endif /* DHD_FW_COREDUMP */

#ifdef DHD_LOG_DUMP
static void
dhd_log_dump(void *handle, void *event_info, u8 event)
{
        dhd_info_t *dhd = handle;

        if (!dhd) {
                DHD_ERROR(("%s: dhd is NULL\n", __FUNCTION__));
                return;
        }

        if (do_dhd_log_dump(&dhd->pub)) {
                DHD_ERROR(("%s: writing debug dump to the file failed\n", __FUNCTION__));
                return;
        }
}

void dhd_schedule_log_dump(dhd_pub_t *dhdp)
{
        dhd_deferred_schedule_work(dhdp->info->dhd_deferred_wq,
                (void*)NULL, DHD_WQ_WORK_DHD_LOG_DUMP,
                dhd_log_dump, DHD_WORK_PRIORITY_HIGH);
}

static int
do_dhd_log_dump(dhd_pub_t *dhdp)
{
        int ret = 0;
        struct file *fp = NULL;
        mm_segment_t old_fs;
        loff_t pos = 0;
        char dump_path[128];
        char common_info[1024];
        struct timeval curtime;
        uint32 file_mode;
        unsigned long flags = 0;

        if (!dhdp) {
                return -1;
        }

        /* Building the additional information like DHD, F/W version */
        memset(common_info, 0, sizeof(common_info));
        snprintf(common_info, sizeof(common_info),
                "---------- Common information ----------\n"
                "DHD version: %s\n"
                "F/W version: %s\n"
                "----------------------------------------\n",
                dhd_version, fw_version);

        /* change to KERNEL_DS address limit */
        old_fs = get_fs();
        set_fs(KERNEL_DS);

        /* Init file name */
        memset(dump_path, 0, sizeof(dump_path));
        do_gettimeofday(&curtime);
        snprintf(dump_path, sizeof(dump_path), "%s_%ld.%ld",
                DHD_COMMON_DUMP_PATH "debug_dump",
                (unsigned long)curtime.tv_sec, (unsigned long)curtime.tv_usec);
        file_mode = O_CREAT | O_WRONLY | O_SYNC;

        DHD_ERROR(("debug_dump_path = %s\n", dump_path));
        fp = filp_open(dump_path, file_mode, 0644);
        if (IS_ERR(fp)) {
                ret = PTR_ERR(fp);
                DHD_ERROR(("open file error, err = %d\n", ret));
                ret = -1;
                goto exit;
        }

        fp->f_op->write(fp, common_info, strlen(common_info), &pos);
        if (dhdp->dld_buf.wraparound) {
                fp->f_op->write(fp, dhdp->dld_buf.buffer, DHD_LOG_DUMP_BUFFER_SIZE, &pos);
        } else {
                fp->f_op->write(fp, dhdp->dld_buf.buffer,
                        (int)(dhdp->dld_buf.present - dhdp->dld_buf.front), &pos);
        }

        /* re-init dhd_log_dump_buf structure */
        spin_lock_irqsave(&dhdp->dld_buf.lock, flags);
        dhdp->dld_buf.wraparound = 0;
        dhdp->dld_buf.present = dhdp->dld_buf.front;
        dhdp->dld_buf.remain = DHD_LOG_DUMP_BUFFER_SIZE;
        bzero(dhdp->dld_buf.buffer, DHD_LOG_DUMP_BUFFER_SIZE);
        spin_unlock_irqrestore(&dhdp->dld_buf.lock, flags);
exit:
        if (!ret) {
                filp_close(fp, NULL);
        }
        set_fs(old_fs);

        return ret;
}
#endif /* DHD_LOG_DUMP */

#ifdef BCMASSERT_LOG
#ifdef CUSTOMER_HW4_DEBUG
#ifdef PLATFORM_SLP
#define ASSERTINFO "/opt/etc/.assert.info"
#else
#define ASSERTINFO "/data/.assert.info"
#endif /* PLATFORM_SLP */
#elif defined(CUSTOMER_HW2)
#define ASSERTINFO "/data/misc/wifi/.assert.info"
#else
#define ASSERTINFO "/installmedia/.assert.info"
#endif /* CUSTOMER_HW4_DEBUG */
void dhd_get_assert_info(dhd_pub_t *dhd)
{
        struct file *fp = NULL;
        char *filepath = ASSERTINFO;

        /*
         * Read assert info from the file
         * 0: Trigger Kernel crash by panic()
         * 1: Print out the logs and don't trigger Kernel panic. (default)
         * 2: Trigger Kernel crash by BUG()
         * File doesn't exist: Keep default value (1).
         */
        fp = filp_open(filepath, O_RDONLY, 0);
        if (IS_ERR(fp)) {
                DHD_ERROR(("%s: File [%s] doesn't exist\n", __FUNCTION__, filepath));
        } else {
                int mem_val = 0;
                int ret = kernel_read(fp, 0, (char *)&mem_val, 4);
                if (ret < 0) {
                        DHD_ERROR(("%s: File read error, ret=%d\n", __FUNCTION__, ret));
                } else {
                        mem_val = bcm_atoi((char *)&mem_val);
                        DHD_ERROR(("%s: ASSERT ENABLED = %d\n", __FUNCTION__, mem_val));
                        g_assert_type = mem_val;
                }
                filp_close(fp, NULL);
        }
}
#endif /* BCMASSERT_LOG */


#ifdef DHD_WMF
/* Returns interface specific WMF configuration */
dhd_wmf_t* dhd_wmf_conf(dhd_pub_t *dhdp, uint32 idx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];
        return &ifp->wmf;
}
#endif /* DHD_WMF */


#if defined(DHD_L2_FILTER)
bool dhd_sta_associated(dhd_pub_t *dhdp, uint32 bssidx, uint8 *mac)
{
        return dhd_find_sta(dhdp, bssidx, mac) ? TRUE : FALSE;
}
#endif 

#ifdef DHD_L2_FILTER
arp_table_t*
dhd_get_ifp_arp_table_handle(dhd_pub_t *dhdp, uint32 bssidx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(bssidx < DHD_MAX_IFS);

        ifp = dhd->iflist[bssidx];
        return ifp->phnd_arp_table;
}

int dhd_get_parp_status(dhd_pub_t *dhdp, uint32 idx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];

        if (ifp)
                return ifp->parp_enable;
        else
                return FALSE;
}

/* Set interface specific proxy arp configuration */
int dhd_set_parp_status(dhd_pub_t *dhdp, uint32 idx, int val)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;
        ASSERT(idx < DHD_MAX_IFS);
        ifp = dhd->iflist[idx];

        if (!ifp)
            return BCME_ERROR;

        /* At present all 3 variables are being
         * handled at once
         */
        ifp->parp_enable = val;
        ifp->parp_discard = val;
        ifp->parp_allnode = !val;

        /* Flush ARP entries when disabled */
        if (val == FALSE) {
                bcm_l2_filter_arp_table_update(dhdp->osh, ifp->phnd_arp_table, TRUE, NULL,
                        FALSE, dhdp->tickcnt);
        }
        return BCME_OK;
}

bool dhd_parp_discard_is_enabled(dhd_pub_t *dhdp, uint32 idx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];

        ASSERT(ifp);
        return ifp->parp_discard;
}

bool
dhd_parp_allnode_is_enabled(dhd_pub_t *dhdp, uint32 idx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];

        ASSERT(ifp);

        return ifp->parp_allnode;
}

int dhd_get_dhcp_unicast_status(dhd_pub_t *dhdp, uint32 idx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];

        ASSERT(ifp);

        return ifp->dhcp_unicast;
}

int dhd_set_dhcp_unicast_status(dhd_pub_t *dhdp, uint32 idx, int val)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;
        ASSERT(idx < DHD_MAX_IFS);
        ifp = dhd->iflist[idx];

        ASSERT(ifp);

        ifp->dhcp_unicast = val;
        return BCME_OK;
}

int dhd_get_block_ping_status(dhd_pub_t *dhdp, uint32 idx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];

        ASSERT(ifp);

        return ifp->block_ping;
}

int dhd_set_block_ping_status(dhd_pub_t *dhdp, uint32 idx, int val)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;
        ASSERT(idx < DHD_MAX_IFS);
        ifp = dhd->iflist[idx];

        ASSERT(ifp);

        ifp->block_ping = val;

        return BCME_OK;
}

int dhd_get_grat_arp_status(dhd_pub_t *dhdp, uint32 idx)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;

        ASSERT(idx < DHD_MAX_IFS);

        ifp = dhd->iflist[idx];

        ASSERT(ifp);

        return ifp->grat_arp;
}

int dhd_set_grat_arp_status(dhd_pub_t *dhdp, uint32 idx, int val)
{
        dhd_info_t *dhd = dhdp->info;
        dhd_if_t *ifp;
        ASSERT(idx < DHD_MAX_IFS);
        ifp = dhd->iflist[idx];

        ASSERT(ifp);

        ifp->grat_arp = val;

        return BCME_OK;
}
#endif /* DHD_L2_FILTER */


#if defined(SET_RPS_CPUS)
int dhd_rps_cpus_enable(struct net_device *net, int enable)
{
        dhd_info_t *dhd = DHD_DEV_INFO(net);
        dhd_if_t *ifp;
        int ifidx;
        char * RPS_CPU_SETBUF;

        ifidx = dhd_net2idx(dhd, net);
        if (ifidx == DHD_BAD_IF) {
                DHD_ERROR(("%s bad ifidx\n", __FUNCTION__));
                return -ENODEV;
        }

        if (ifidx == PRIMARY_INF) {
                if (dhd->pub.op_mode == DHD_FLAG_IBSS_MODE) {
                        DHD_INFO(("%s : set for IBSS.\n", __FUNCTION__));
                        RPS_CPU_SETBUF = RPS_CPUS_MASK_IBSS;
                } else {
                        DHD_INFO(("%s : set for BSS.\n", __FUNCTION__));
                        RPS_CPU_SETBUF = RPS_CPUS_MASK;
                }
        } else if (ifidx == VIRTUAL_INF) {
                DHD_INFO(("%s : set for P2P.\n", __FUNCTION__));
                RPS_CPU_SETBUF = RPS_CPUS_MASK_P2P;
        } else {
                DHD_ERROR(("%s : Invalid index : %d.\n", __FUNCTION__, ifidx));
                return -EINVAL;
        }

        ifp = dhd->iflist[ifidx];
        if (ifp) {
                if (enable) {
                        DHD_INFO(("%s : set rps_cpus as [%s]\n", __FUNCTION__, RPS_CPU_SETBUF));
                        custom_rps_map_set(ifp->net->_rx, RPS_CPU_SETBUF, strlen(RPS_CPU_SETBUF));
                } else {
                        custom_rps_map_clear(ifp->net->_rx);
                }
        } else {
                DHD_ERROR(("%s : ifp is NULL!!\n", __FUNCTION__));
                return -ENODEV;
        }
        return BCME_OK;
}

int custom_rps_map_set(struct netdev_rx_queue *queue, char *buf, size_t len)
{
        struct rps_map *old_map, *map;
        cpumask_var_t mask;
        int err, cpu, i;
        static DEFINE_SPINLOCK(rps_map_lock);

        DHD_INFO(("%s : Entered.\n", __FUNCTION__));

        if (!alloc_cpumask_var(&mask, GFP_KERNEL)) {
                DHD_ERROR(("%s : alloc_cpumask_var fail.\n", __FUNCTION__));
                return -ENOMEM;
        }

        err = bitmap_parse(buf, len, cpumask_bits(mask), nr_cpumask_bits);
        if (err) {
                free_cpumask_var(mask);
                DHD_ERROR(("%s : bitmap_parse fail.\n", __FUNCTION__));
                return err;
        }

        map = kzalloc(max_t(unsigned int,
                RPS_MAP_SIZE(cpumask_weight(mask)), L1_CACHE_BYTES),
                GFP_KERNEL);
        if (!map) {
                free_cpumask_var(mask);
                DHD_ERROR(("%s : map malloc fail.\n", __FUNCTION__));
                return -ENOMEM;
        }

        i = 0;
        for_each_cpu(cpu, mask) {
                map->cpus[i++] = cpu;
        }

        if (i) {
                map->len = i;
        } else {
                kfree(map);
                map = NULL;
                free_cpumask_var(mask);
                DHD_ERROR(("%s : mapping cpu fail.\n", __FUNCTION__));
                return -1;
        }

        spin_lock(&rps_map_lock);
        old_map = rcu_dereference_protected(queue->rps_map,
                lockdep_is_held(&rps_map_lock));
        rcu_assign_pointer(queue->rps_map, map);
        spin_unlock(&rps_map_lock);

        if (map) {
                static_key_slow_inc(&rps_needed);
        }
        if (old_map) {
                kfree_rcu(old_map, rcu);
                static_key_slow_dec(&rps_needed);
        }
        free_cpumask_var(mask);

        DHD_INFO(("%s : Done. mapping cpu nummber : %d\n", __FUNCTION__, map->len));
        return map->len;
}

void custom_rps_map_clear(struct netdev_rx_queue *queue)
{
        struct rps_map *map;

        DHD_INFO(("%s : Entered.\n", __FUNCTION__));

        map = rcu_dereference_protected(queue->rps_map, 1);
        if (map) {
                RCU_INIT_POINTER(queue->rps_map, NULL);
                kfree_rcu(map, rcu);
                DHD_INFO(("%s : rps_cpus map clear.\n", __FUNCTION__));
        }
}
#endif 



#ifdef DHD_DEBUG_PAGEALLOC

void
dhd_page_corrupt_cb(void *handle, void *addr_corrupt, size_t len)
{
        dhd_pub_t *dhdp = (dhd_pub_t *)handle;

        DHD_ERROR(("%s: Got dhd_page_corrupt_cb 0x%p %d\n",
                __FUNCTION__, addr_corrupt, (uint32)len));

        DHD_OS_WAKE_LOCK(dhdp);
        prhex("Page Corruption:", addr_corrupt, len);
        dhd_dump_to_kernelog(dhdp);
#if defined(BCMPCIE) && defined(DHD_FW_COREDUMP)
        /* Load the dongle side dump to host memory and then BUG_ON() */
        dhdp->memdump_enabled = DUMP_MEMONLY;
        dhdp->memdump_type = DUMP_TYPE_MEMORY_CORRUPTION;
        dhd_bus_mem_dump(dhdp);
#endif /* BCMPCIE && DHD_FW_COREDUMP */
        DHD_OS_WAKE_UNLOCK(dhdp);
}
EXPORT_SYMBOL(dhd_page_corrupt_cb);
#endif /* DHD_DEBUG_PAGEALLOC */

#ifdef DHD_PKTID_AUDIT_ENABLED
void
dhd_pktid_audit_fail_cb(dhd_pub_t *dhdp)
{
        DHD_ERROR(("%s: Got Pkt Id Audit failure \n", __FUNCTION__));
        DHD_OS_WAKE_LOCK(dhdp);
        dhd_dump_to_kernelog(dhdp);
#if defined(BCMPCIE) && defined(DHD_FW_COREDUMP)
        /* Load the dongle side dump to host memory and then BUG_ON() */
        dhdp->memdump_enabled = DUMP_MEMFILE_BUGON;
        dhdp->memdump_type = DUMP_TYPE_PKTID_AUDIT_FAILURE;
        dhd_bus_mem_dump(dhdp);
#endif /* BCMPCIE && DHD_FW_COREDUMP */
        DHD_OS_WAKE_UNLOCK(dhdp);
}
#endif /* DHD_PKTID_AUDIT_ENABLED */

/* ----------------------------------------------------------------------------
 * Infrastructure code for sysfs interface support for DHD
 *
 * What is sysfs interface?
 * https://www.kernel.org/doc/Documentation/filesystems/sysfs.txt
 *
 * Why sysfs interface?
 * This is the Linux standard way of changing/configuring Run Time parameters
 * for a driver. We can use this interface to control "linux" specific driver
 * parameters.
 *
 * -----------------------------------------------------------------------------
 */

#include <linux/sysfs.h>
#include <linux/kobject.h>

#if defined(DHD_TRACE_WAKE_LOCK)

/* Function to show the history buffer */
static ssize_t
show_wklock_trace(struct dhd_info *dev, char *buf)
{
        ssize_t ret = 0;
        dhd_info_t *dhd = (dhd_info_t *)dev;

        buf[ret] = '\n';
        buf[ret+1] = 0;

        dhd_wk_lock_stats_dump(&dhd->pub);
        return ret+1;
}

/* Function to enable/disable wakelock trace */
static ssize_t
wklock_trace_onoff(struct dhd_info *dev, const char *buf, size_t count)
{
        unsigned long onoff;
        unsigned long flags;
        dhd_info_t *dhd = (dhd_info_t *)dev;

        onoff = bcm_strtoul(buf, NULL, 10);
        if (onoff != 0 && onoff != 1) {
                return -EINVAL;
        }

        spin_lock_irqsave(&dhd->wakelock_spinlock, flags);
        trace_wklock_onoff = onoff;
        spin_unlock_irqrestore(&dhd->wakelock_spinlock, flags);
        if (trace_wklock_onoff) {
                printk("ENABLE WAKLOCK TRACE\n");
        } else {
                printk("DISABLE WAKELOCK TRACE\n");
        }

        return (ssize_t)(onoff+1);
}
#endif /* DHD_TRACE_WAKE_LOCK */

/*
 * Generic Attribute Structure for DHD.
 * If we have to add a new sysfs entry under /sys/bcm-dhd/, we have
 * to instantiate an object of type dhd_attr,  populate it with
 * the required show/store functions (ex:- dhd_attr_cpumask_primary)
 * and add the object to default_attrs[] array, that gets registered
 * to the kobject of dhd (named bcm-dhd).
 */

struct dhd_attr {
        struct attribute attr;
        ssize_t(*show)(struct dhd_info *, char *);
        ssize_t(*store)(struct dhd_info *, const char *, size_t count);
};

#if defined(DHD_TRACE_WAKE_LOCK)
static struct dhd_attr dhd_attr_wklock =
        __ATTR(wklock_trace, 0660, show_wklock_trace, wklock_trace_onoff);
#endif /* defined(DHD_TRACE_WAKE_LOCK */

/* Attribute object that gets registered with "bcm-dhd" kobject tree */
static struct attribute *default_attrs[] = {
#if defined(DHD_TRACE_WAKE_LOCK)
        &dhd_attr_wklock.attr,
#endif
        NULL
};

#define to_dhd(k) container_of(k, struct dhd_info, dhd_kobj)
#define to_attr(a) container_of(a, struct dhd_attr, attr)

/*
 * bcm-dhd kobject show function, the "attr" attribute specifices to which
 * node under "bcm-dhd" the show function is called.
 */
static ssize_t dhd_show(struct kobject *kobj, struct attribute *attr, char *buf)
{
        dhd_info_t *dhd = to_dhd(kobj);
        struct dhd_attr *d_attr = to_attr(attr);
        int ret;

        if (d_attr->show)
                ret = d_attr->show(dhd, buf);
        else
                ret = -EIO;

        return ret;
}


/*
 * bcm-dhd kobject show function, the "attr" attribute specifices to which
 * node under "bcm-dhd" the store function is called.
 */
static ssize_t dhd_store(struct kobject *kobj, struct attribute *attr,
        const char *buf, size_t count)
{
        dhd_info_t *dhd = to_dhd(kobj);
        struct dhd_attr *d_attr = to_attr(attr);
        int ret;

        if (d_attr->store)
                ret = d_attr->store(dhd, buf, count);
        else
                ret = -EIO;

        return ret;

}

static struct sysfs_ops dhd_sysfs_ops = {
        .show = dhd_show,
        .store = dhd_store,
};

static struct kobj_type dhd_ktype = {
        .sysfs_ops = &dhd_sysfs_ops,
        .default_attrs = default_attrs,
};

/* Create a kobject and attach to sysfs interface */
static int dhd_sysfs_init(dhd_info_t *dhd)
{
        int ret = -1;

        if (dhd == NULL) {
                DHD_ERROR(("%s(): dhd is NULL \r\n", __FUNCTION__));
                return ret;
        }

        /* Initialize the kobject */
        ret = kobject_init_and_add(&dhd->dhd_kobj, &dhd_ktype, NULL, "bcm-dhd");
        if (ret) {
                kobject_put(&dhd->dhd_kobj);
                DHD_ERROR(("%s(): Unable to allocate kobject \r\n", __FUNCTION__));
                return ret;
        }

        /*
         * We are always responsible for sending the uevent that the kobject
         * was added to the system.
         */
        kobject_uevent(&dhd->dhd_kobj, KOBJ_ADD);

        return ret;
}

/* Done with the kobject and detach the sysfs interface */
static void dhd_sysfs_exit(dhd_info_t *dhd)
{
        if (dhd == NULL) {
                DHD_ERROR(("%s(): dhd is NULL \r\n", __FUNCTION__));
                return;
        }

        /* Releae the kobject */
        kobject_put(&dhd->dhd_kobj);
}

#ifdef DHD_LOG_DUMP
void
dhd_log_dump_init(dhd_pub_t *dhd)
{
        spin_lock_init(&dhd->dld_buf.lock);
#if defined(CONFIG_DHD_USE_STATIC_BUF) && defined(DHD_USE_STATIC_MEMDUMP)
        dhd->dld_buf.buffer = DHD_OS_PREALLOC(dhd,
                DHD_PREALLOC_DHD_LOG_DUMP_BUF, DHD_LOG_DUMP_BUFFER_SIZE);
#else
        dhd->dld_buf.buffer = kmalloc(DHD_LOG_DUMP_BUFFER_SIZE, GFP_KERNEL);
#endif /* CONFIG_DHD_USE_STATIC_BUF && DHD_USE_STATIC_MEMDUMP */

        if (!dhd->dld_buf.buffer) {
                dhd->dld_buf.buffer = kmalloc(DHD_LOG_DUMP_BUFFER_SIZE, GFP_KERNEL);
                DHD_ERROR(("Try to allocate memory using kmalloc().\n"));

                if (!dhd->dld_buf.buffer) {
                        DHD_ERROR(("Failed to allocate memory for dld_buf.\n"));
                        return;
                }
        }

        dhd->dld_buf.wraparound = 0;
        dhd->dld_buf.max = (unsigned long)dhd->dld_buf.buffer + DHD_LOG_DUMP_BUFFER_SIZE;
        dhd->dld_buf.present = dhd->dld_buf.buffer;
        dhd->dld_buf.front = dhd->dld_buf.buffer;
        dhd->dld_buf.remain = DHD_LOG_DUMP_BUFFER_SIZE;
        dhd->dld_enable = 1;
}

void
dhd_log_dump_deinit(dhd_pub_t *dhd)
{
        dhd->dld_enable = 0;
#if defined(CONFIG_DHD_USE_STATIC_BUF) && defined(DHD_USE_STATIC_MEMDUMP)
        DHD_OS_PREFREE(dhd,
                dhd->dld_buf.buffer, DHD_LOG_DUMP_BUFFER_SIZE);
#else
        kfree(dhd->dld_buf.buffer);
#endif /* CONFIG_DHD_USE_STATIC_BUF && DHD_USE_STATIC_MEMDUMP */
}

void
dhd_log_dump_print(const char *fmt, ...)
{
        int len = 0;
        char tmp_buf[DHD_LOG_DUMP_MAX_TEMP_BUFFER_SIZE] = {0, };
        va_list args;
        dhd_pub_t *dhd = NULL;
        unsigned long flags = 0;

        if (wl_get_bcm_cfg80211_ptr()) {
                dhd = (dhd_pub_t*)(wl_get_bcm_cfg80211_ptr()->pub);
        }

        if (!dhd || dhd->dld_enable != 1) {
                return;
        }

        va_start(args, fmt);

        len = vsnprintf(tmp_buf, DHD_LOG_DUMP_MAX_TEMP_BUFFER_SIZE, fmt, args);
        if (len < 0) {
                return;
        }

        /* make a critical section to eliminate race conditions */
        spin_lock_irqsave(&dhd->dld_buf.lock, flags);
        if (dhd->dld_buf.remain < len) {
                dhd->dld_buf.wraparound = 1;
                dhd->dld_buf.present = dhd->dld_buf.front;
                dhd->dld_buf.remain = DHD_LOG_DUMP_BUFFER_SIZE;
        }

        strncpy(dhd->dld_buf.present, tmp_buf, len);
        dhd->dld_buf.remain -= len;
        dhd->dld_buf.present += len;
        spin_unlock_irqrestore(&dhd->dld_buf.lock, flags);

        /* double check invalid memory operation */
        ASSERT((unsigned long)dhd->dld_buf.present <= dhd->dld_buf.max);
        va_end(args);
}

char*
dhd_log_dump_get_timestamp(void)
{
        static char buf[16];
        u64 ts_nsec;
        unsigned long rem_nsec;

        ts_nsec = local_clock();
        rem_nsec = do_div(ts_nsec, 1000000000);
        snprintf(buf, sizeof(buf), "%5lu.%06lu",
                (unsigned long)ts_nsec, rem_nsec / 1000);

        return buf;
}

#endif /* DHD_LOG_DUMP */

/* ---------------------------- End of sysfs implementation ------------------------------------- */

void *dhd_get_pub(struct net_device *dev)
{
        dhd_info_t *dhdinfo = *(dhd_info_t **)netdev_priv(dev);
        if (dhdinfo)
                return (void *)&dhdinfo->pub;
        else
                return NULL;
}

bool dhd_os_wd_timer_enabled(void *bus)
{
        dhd_pub_t *pub = bus;
        dhd_info_t *dhd = (dhd_info_t *)pub->info;

        DHD_TRACE(("%s: Enter\n", __FUNCTION__));
        if (!dhd) {
                DHD_ERROR(("%s: dhd NULL\n", __FUNCTION__));
                return FALSE;
        }
        return dhd->wd_timer_valid;
}