drivers/net/wireless/rndis_wlan.c

   1 /*
   2  * Driver for RNDIS based wireless USB devices.
   3  *
   4  * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
   5  * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  *  Portions of this file are based on NDISwrapper project,
  22  *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
  23  *  http://ndiswrapper.sourceforge.net/
  24  */
  25
  26 // #define      DEBUG                   // error path messages, extra info
  27 // #define      VERBOSE                 // more; success messages
  28
  29 #include <linux/module.h>
  30 #include <linux/init.h>
  31 #include <linux/netdevice.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/ethtool.h>
  34 #include <linux/workqueue.h>
  35 #include <linux/mutex.h>
  36 #include <linux/mii.h>
  37 #include <linux/usb.h>
  38 #include <linux/usb/cdc.h>
  39 #include <linux/ieee80211.h>
  40 #include <linux/if_arp.h>
  41 #include <linux/ctype.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/slab.h>
  44 #include <net/cfg80211.h>
  45 #include <linux/usb/usbnet.h>
  46 #include <linux/usb/rndis_host.h>
  47
  48
  49 /* NOTE: All these are settings for Broadcom chipset */
  50 static char modparam_country[4] = "EU";
  51 module_param_string(country, modparam_country, 4, 0444);
  52 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  53
  54 static int modparam_frameburst = 1;
  55 module_param_named(frameburst, modparam_frameburst, int, 0444);
  56 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  57
  58 static int modparam_afterburner = 0;
  59 module_param_named(afterburner, modparam_afterburner, int, 0444);
  60 MODULE_PARM_DESC(afterburner,
  61         "enable afterburner aka '125 High Speed Mode' (default: off)");
  62
  63 static int modparam_power_save = 0;
  64 module_param_named(power_save, modparam_power_save, int, 0444);
  65 MODULE_PARM_DESC(power_save,
  66         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
  67
  68 static int modparam_power_output = 3;
  69 module_param_named(power_output, modparam_power_output, int, 0444);
  70 MODULE_PARM_DESC(power_output,
  71         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  72
  73 static int modparam_roamtrigger = -70;
  74 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  75 MODULE_PARM_DESC(roamtrigger,
  76         "set roaming dBm trigger: -80=optimize for distance, "
  77                                 "-60=bandwidth (default: -70)");
  78
  79 static int modparam_roamdelta = 1;
  80 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  81 MODULE_PARM_DESC(roamdelta,
  82         "set roaming tendency: 0=aggressive, 1=moderate, "
  83                                 "2=conservative (default: moderate)");
  84
  85 static int modparam_workaround_interval;
  86 module_param_named(workaround_interval, modparam_workaround_interval,
  87                                                         int, 0444);
  88 MODULE_PARM_DESC(workaround_interval,
  89         "set stall workaround interval in msecs (0=disabled) (default: 0)");
  90
  91 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
  92 #define WL_NOISE        -96     /* typical noise level in dBm */
  93 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
  94
  95
  96 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
  97  * based on wireless rndis) has default txpower of 13dBm.
  98  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
  99  *  100% : 20 mW ~ 13dBm
 100  *   75% : 15 mW ~ 12dBm
 101  *   50% : 10 mW ~ 10dBm
 102  *   25% :  5 mW ~  7dBm
 103  */
 104 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
 105 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
 106 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
 107 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
 108
 109 /* Known device types */
 110 #define RNDIS_UNKNOWN   0
 111 #define RNDIS_BCM4320A  1
 112 #define RNDIS_BCM4320B  2
 113
 114
 115 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 116  * slightly modified for datatype endianess, etc
 117  */
 118 #define NDIS_802_11_LENGTH_SSID 32
 119 #define NDIS_802_11_LENGTH_RATES 8
 120 #define NDIS_802_11_LENGTH_RATES_EX 16
 121
 122 enum ndis_80211_net_type {
 123         NDIS_80211_TYPE_FREQ_HOP,
 124         NDIS_80211_TYPE_DIRECT_SEQ,
 125         NDIS_80211_TYPE_OFDM_A,
 126         NDIS_80211_TYPE_OFDM_G
 127 };
 128
 129 enum ndis_80211_net_infra {
 130         NDIS_80211_INFRA_ADHOC,
 131         NDIS_80211_INFRA_INFRA,
 132         NDIS_80211_INFRA_AUTO_UNKNOWN
 133 };
 134
 135 enum ndis_80211_auth_mode {
 136         NDIS_80211_AUTH_OPEN,
 137         NDIS_80211_AUTH_SHARED,
 138         NDIS_80211_AUTH_AUTO_SWITCH,
 139         NDIS_80211_AUTH_WPA,
 140         NDIS_80211_AUTH_WPA_PSK,
 141         NDIS_80211_AUTH_WPA_NONE,
 142         NDIS_80211_AUTH_WPA2,
 143         NDIS_80211_AUTH_WPA2_PSK
 144 };
 145
 146 enum ndis_80211_encr_status {
 147         NDIS_80211_ENCR_WEP_ENABLED,
 148         NDIS_80211_ENCR_DISABLED,
 149         NDIS_80211_ENCR_WEP_KEY_ABSENT,
 150         NDIS_80211_ENCR_NOT_SUPPORTED,
 151         NDIS_80211_ENCR_TKIP_ENABLED,
 152         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 153         NDIS_80211_ENCR_CCMP_ENABLED,
 154         NDIS_80211_ENCR_CCMP_KEY_ABSENT
 155 };
 156
 157 enum ndis_80211_priv_filter {
 158         NDIS_80211_PRIV_ACCEPT_ALL,
 159         NDIS_80211_PRIV_8021X_WEP
 160 };
 161
 162 enum ndis_80211_status_type {
 163         NDIS_80211_STATUSTYPE_AUTHENTICATION,
 164         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 165         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 166         NDIS_80211_STATUSTYPE_RADIOSTATE,
 167 };
 168
 169 enum ndis_80211_media_stream_mode {
 170         NDIS_80211_MEDIA_STREAM_OFF,
 171         NDIS_80211_MEDIA_STREAM_ON
 172 };
 173
 174 enum ndis_80211_radio_status {
 175         NDIS_80211_RADIO_STATUS_ON,
 176         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 177         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 178 };
 179
 180 enum ndis_80211_addkey_bits {
 181         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 182         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 183         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 184         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 185 };
 186
 187 enum ndis_80211_addwep_bits {
 188         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 189         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 190 };
 191
 192 enum ndis_80211_power_mode {
 193         NDIS_80211_POWER_MODE_CAM,
 194         NDIS_80211_POWER_MODE_MAX_PSP,
 195         NDIS_80211_POWER_MODE_FAST_PSP,
 196 };
 197
 198 enum ndis_80211_pmkid_cand_list_flag_bits {
 199         NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
 200 };
 201
 202 struct ndis_80211_auth_request {
 203         __le32 length;
 204         u8 bssid[6];
 205         u8 padding[2];
 206         __le32 flags;
 207 } __packed;
 208
 209 struct ndis_80211_pmkid_candidate {
 210         u8 bssid[6];
 211         u8 padding[2];
 212         __le32 flags;
 213 } __packed;
 214
 215 struct ndis_80211_pmkid_cand_list {
 216         __le32 version;
 217         __le32 num_candidates;
 218         struct ndis_80211_pmkid_candidate candidate_list[0];
 219 } __packed;
 220
 221 struct ndis_80211_status_indication {
 222         __le32 status_type;
 223         union {
 224                 __le32                                  media_stream_mode;
 225                 __le32                                  radio_status;
 226                 struct ndis_80211_auth_request          auth_request[0];
 227                 struct ndis_80211_pmkid_cand_list       cand_list;
 228         } u;
 229 } __packed;
 230
 231 struct ndis_80211_ssid {
 232         __le32 length;
 233         u8 essid[NDIS_802_11_LENGTH_SSID];
 234 } __packed;
 235
 236 struct ndis_80211_conf_freq_hop {
 237         __le32 length;
 238         __le32 hop_pattern;
 239         __le32 hop_set;
 240         __le32 dwell_time;
 241 } __packed;
 242
 243 struct ndis_80211_conf {
 244         __le32 length;
 245         __le32 beacon_period;
 246         __le32 atim_window;
 247         __le32 ds_config;
 248         struct ndis_80211_conf_freq_hop fh_config;
 249 } __packed;
 250
 251 struct ndis_80211_bssid_ex {
 252         __le32 length;
 253         u8 mac[6];
 254         u8 padding[2];
 255         struct ndis_80211_ssid ssid;
 256         __le32 privacy;
 257         __le32 rssi;
 258         __le32 net_type;
 259         struct ndis_80211_conf config;
 260         __le32 net_infra;
 261         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 262         __le32 ie_length;
 263         u8 ies[0];
 264 } __packed;
 265
 266 struct ndis_80211_bssid_list_ex {
 267         __le32 num_items;
 268         struct ndis_80211_bssid_ex bssid[0];
 269 } __packed;
 270
 271 struct ndis_80211_fixed_ies {
 272         u8 timestamp[8];
 273         __le16 beacon_interval;
 274         __le16 capabilities;
 275 } __packed;
 276
 277 struct ndis_80211_wep_key {
 278         __le32 size;
 279         __le32 index;
 280         __le32 length;
 281         u8 material[32];
 282 } __packed;
 283
 284 struct ndis_80211_key {
 285         __le32 size;
 286         __le32 index;
 287         __le32 length;
 288         u8 bssid[6];
 289         u8 padding[6];
 290         u8 rsc[8];
 291         u8 material[32];
 292 } __packed;
 293
 294 struct ndis_80211_remove_key {
 295         __le32 size;
 296         __le32 index;
 297         u8 bssid[6];
 298         u8 padding[2];
 299 } __packed;
 300
 301 struct ndis_config_param {
 302         __le32 name_offs;
 303         __le32 name_length;
 304         __le32 type;
 305         __le32 value_offs;
 306         __le32 value_length;
 307 } __packed;
 308
 309 struct ndis_80211_assoc_info {
 310         __le32 length;
 311         __le16 req_ies;
 312         struct req_ie {
 313                 __le16 capa;
 314                 __le16 listen_interval;
 315                 u8 cur_ap_address[6];
 316         } req_ie;
 317         __le32 req_ie_length;
 318         __le32 offset_req_ies;
 319         __le16 resp_ies;
 320         struct resp_ie {
 321                 __le16 capa;
 322                 __le16 status_code;
 323                 __le16 assoc_id;
 324         } resp_ie;
 325         __le32 resp_ie_length;
 326         __le32 offset_resp_ies;
 327 } __packed;
 328
 329 struct ndis_80211_auth_encr_pair {
 330         __le32 auth_mode;
 331         __le32 encr_mode;
 332 } __packed;
 333
 334 struct ndis_80211_capability {
 335         __le32 length;
 336         __le32 version;
 337         __le32 num_pmkids;
 338         __le32 num_auth_encr_pair;
 339         struct ndis_80211_auth_encr_pair auth_encr_pair[0];
 340 } __packed;
 341
 342 struct ndis_80211_bssid_info {
 343         u8 bssid[6];
 344         u8 pmkid[16];
 345 } __packed;
 346
 347 struct ndis_80211_pmkid {
 348         __le32 length;
 349         __le32 bssid_info_count;
 350         struct ndis_80211_bssid_info bssid_info[0];
 351 } __packed;
 352
 353 /*
 354  *  private data
 355  */
 356 #define CAP_MODE_80211A         1
 357 #define CAP_MODE_80211B         2
 358 #define CAP_MODE_80211G         4
 359 #define CAP_MODE_MASK           7
 360
 361 #define WORK_LINK_UP            (1<<0)
 362 #define WORK_LINK_DOWN          (1<<1)
 363 #define WORK_SET_MULTICAST_LIST (1<<2)
 364
 365 #define RNDIS_WLAN_ALG_NONE     0
 366 #define RNDIS_WLAN_ALG_WEP      (1<<0)
 367 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
 368 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
 369
 370 #define RNDIS_WLAN_NUM_KEYS             4
 371 #define RNDIS_WLAN_KEY_MGMT_NONE        0
 372 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 373 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 374
 375 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 376
 377 static const struct ieee80211_channel rndis_channels[] = {
 378         { .center_freq = 2412 },
 379         { .center_freq = 2417 },
 380         { .center_freq = 2422 },
 381         { .center_freq = 2427 },
 382         { .center_freq = 2432 },
 383         { .center_freq = 2437 },
 384         { .center_freq = 2442 },
 385         { .center_freq = 2447 },
 386         { .center_freq = 2452 },
 387         { .center_freq = 2457 },
 388         { .center_freq = 2462 },
 389         { .center_freq = 2467 },
 390         { .center_freq = 2472 },
 391         { .center_freq = 2484 },
 392 };
 393
 394 static const struct ieee80211_rate rndis_rates[] = {
 395         { .bitrate = 10 },
 396         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 397         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 398         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 399         { .bitrate = 60 },
 400         { .bitrate = 90 },
 401         { .bitrate = 120 },
 402         { .bitrate = 180 },
 403         { .bitrate = 240 },
 404         { .bitrate = 360 },
 405         { .bitrate = 480 },
 406         { .bitrate = 540 }
 407 };
 408
 409 static const u32 rndis_cipher_suites[] = {
 410         WLAN_CIPHER_SUITE_WEP40,
 411         WLAN_CIPHER_SUITE_WEP104,
 412         WLAN_CIPHER_SUITE_TKIP,
 413         WLAN_CIPHER_SUITE_CCMP,
 414 };
 415
 416 struct rndis_wlan_encr_key {
 417         int len;
 418         u32 cipher;
 419         u8 material[32];
 420         u8 bssid[ETH_ALEN];
 421         bool pairwise;
 422         bool tx_key;
 423 };
 424
 425 /* RNDIS device private data */
 426 struct rndis_wlan_private {
 427         struct usbnet *usbdev;
 428
 429         struct wireless_dev wdev;
 430
 431         struct cfg80211_scan_request *scan_request;
 432
 433         struct workqueue_struct *workqueue;
 434         struct delayed_work dev_poller_work;
 435         struct delayed_work scan_work;
 436         struct work_struct work;
 437         struct mutex command_lock;
 438         unsigned long work_pending;
 439         int last_qual;
 440         s32 cqm_rssi_thold;
 441         u32 cqm_rssi_hyst;
 442         int last_cqm_event_rssi;
 443
 444         struct ieee80211_supported_band band;
 445         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 446         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 447         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 448
 449         int device_type;
 450         int caps;
 451         int multicast_size;
 452
 453         /* module parameters */
 454         char param_country[4];
 455         int  param_frameburst;
 456         int  param_afterburner;
 457         int  param_power_save;
 458         int  param_power_output;
 459         int  param_roamtrigger;
 460         int  param_roamdelta;
 461         u32  param_workaround_interval;
 462
 463         /* hardware state */
 464         bool radio_on;
 465         int power_mode;
 466         int infra_mode;
 467         bool connected;
 468         u8 bssid[ETH_ALEN];
 469         u32 current_command_oid;
 470
 471         /* encryption stuff */
 472         u8 encr_tx_key_index;
 473         struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
 474         int  wpa_version;
 475
 476         u8 command_buffer[COMMAND_BUFFER_SIZE];
 477 };
 478
 479 /*
 480  * cfg80211 ops
 481  */
 482 static int rndis_change_virtual_intf(struct wiphy *wiphy,
 483                                         struct net_device *dev,
 484                                         enum nl80211_iftype type, u32 *flags,
 485                                         struct vif_params *params);
 486
 487 static int rndis_scan(struct wiphy *wiphy,
 488                         struct cfg80211_scan_request *request);
 489
 490 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 491
 492 static int rndis_set_tx_power(struct wiphy *wiphy,
 493                               enum nl80211_tx_power_setting type,
 494                               int mbm);
 495 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
 496
 497 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 498                                 struct cfg80211_connect_params *sme);
 499
 500 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 501                                 u16 reason_code);
 502
 503 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 504                                         struct cfg80211_ibss_params *params);
 505
 506 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 507
 508 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 509                          u8 key_index, bool pairwise, const u8 *mac_addr,
 510                          struct key_params *params);
 511
 512 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 513                          u8 key_index, bool pairwise, const u8 *mac_addr);
 514
 515 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 516                                  u8 key_index, bool unicast, bool multicast);
 517
 518 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 519                                         u8 *mac, struct station_info *sinfo);
 520
 521 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 522                                int idx, u8 *mac, struct station_info *sinfo);
 523
 524 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 525                                 struct cfg80211_pmksa *pmksa);
 526
 527 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 528                                 struct cfg80211_pmksa *pmksa);
 529
 530 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 531
 532 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 533                                 bool enabled, int timeout);
 534
 535 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 536                                         struct net_device *dev,
 537                                         s32 rssi_thold, u32 rssi_hyst);
 538
 539 static const struct cfg80211_ops rndis_config_ops = {
 540         .change_virtual_intf = rndis_change_virtual_intf,
 541         .scan = rndis_scan,
 542         .set_wiphy_params = rndis_set_wiphy_params,
 543         .set_tx_power = rndis_set_tx_power,
 544         .get_tx_power = rndis_get_tx_power,
 545         .connect = rndis_connect,
 546         .disconnect = rndis_disconnect,
 547         .join_ibss = rndis_join_ibss,
 548         .leave_ibss = rndis_leave_ibss,
 549         .add_key = rndis_add_key,
 550         .del_key = rndis_del_key,
 551         .set_default_key = rndis_set_default_key,
 552         .get_station = rndis_get_station,
 553         .dump_station = rndis_dump_station,
 554         .set_pmksa = rndis_set_pmksa,
 555         .del_pmksa = rndis_del_pmksa,
 556         .flush_pmksa = rndis_flush_pmksa,
 557         .set_power_mgmt = rndis_set_power_mgmt,
 558         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 559 };
 560
 561 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 562
 563
 564 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 565 {
 566         return (struct rndis_wlan_private *)dev->driver_priv;
 567 }
 568
 569 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 570 {
 571         switch (priv->param_power_output) {
 572         default:
 573         case 3:
 574                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 575         case 2:
 576                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 577         case 1:
 578                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 579         case 0:
 580                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 581         }
 582 }
 583
 584 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 585 {
 586         int cipher = priv->encr_keys[idx].cipher;
 587
 588         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 589                 cipher == WLAN_CIPHER_SUITE_TKIP);
 590 }
 591
 592 static int rndis_cipher_to_alg(u32 cipher)
 593 {
 594         switch (cipher) {
 595         default:
 596                 return RNDIS_WLAN_ALG_NONE;
 597         case WLAN_CIPHER_SUITE_WEP40:
 598         case WLAN_CIPHER_SUITE_WEP104:
 599                 return RNDIS_WLAN_ALG_WEP;
 600         case WLAN_CIPHER_SUITE_TKIP:
 601                 return RNDIS_WLAN_ALG_TKIP;
 602         case WLAN_CIPHER_SUITE_CCMP:
 603                 return RNDIS_WLAN_ALG_CCMP;
 604         }
 605 }
 606
 607 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 608 {
 609         switch (akm_suite) {
 610         default:
 611                 return RNDIS_WLAN_KEY_MGMT_NONE;
 612         case WLAN_AKM_SUITE_8021X:
 613                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 614         case WLAN_AKM_SUITE_PSK:
 615                 return RNDIS_WLAN_KEY_MGMT_PSK;
 616         }
 617 }
 618
 619 #ifdef DEBUG
 620 static const char *oid_to_string(u32 oid)
 621 {
 622         switch (oid) {
 623 #define OID_STR(oid) case oid: return(#oid)
 624                 /* from rndis_host.h */
 625                 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 626                 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 627                 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 628                 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 629
 630                 /* from rndis_wlan.c */
 631                 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 632                 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 633
 634                 OID_STR(RNDIS_OID_GEN_XMIT_OK);
 635                 OID_STR(RNDIS_OID_GEN_RCV_OK);
 636                 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 637                 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 638                 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 639
 640                 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
 641                 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
 642                 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
 643
 644                 OID_STR(RNDIS_OID_802_11_BSSID);
 645                 OID_STR(RNDIS_OID_802_11_SSID);
 646                 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
 647                 OID_STR(RNDIS_OID_802_11_ADD_WEP);
 648                 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
 649                 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
 650                 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
 651                 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
 652                 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
 653                 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
 654                 OID_STR(RNDIS_OID_802_11_ADD_KEY);
 655                 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
 656                 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
 657                 OID_STR(RNDIS_OID_802_11_CAPABILITY);
 658                 OID_STR(RNDIS_OID_802_11_PMKID);
 659                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
 660                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
 661                 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
 662                 OID_STR(RNDIS_OID_802_11_RSSI);
 663                 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
 664                 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
 665                 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
 666                 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
 667                 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
 668                 OID_STR(RNDIS_OID_802_11_POWER_MODE);
 669                 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
 670 #undef OID_STR
 671         }
 672
 673         return "?";
 674 }
 675 #else
 676 static const char *oid_to_string(u32 oid)
 677 {
 678         return "?";
 679 }
 680 #endif
 681
 682 /* translate error code */
 683 static int rndis_error_status(__le32 rndis_status)
 684 {
 685         int ret = -EINVAL;
 686         switch (le32_to_cpu(rndis_status)) {
 687         case RNDIS_STATUS_SUCCESS:
 688                 ret = 0;
 689                 break;
 690         case RNDIS_STATUS_FAILURE:
 691         case RNDIS_STATUS_INVALID_DATA:
 692                 ret = -EINVAL;
 693                 break;
 694         case RNDIS_STATUS_NOT_SUPPORTED:
 695                 ret = -EOPNOTSUPP;
 696                 break;
 697         case RNDIS_STATUS_ADAPTER_NOT_READY:
 698         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 699                 ret = -EBUSY;
 700                 break;
 701         }
 702         return ret;
 703 }
 704
 705 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 706 {
 707         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 708         union {
 709                 void                    *buf;
 710                 struct rndis_msg_hdr    *header;
 711                 struct rndis_query      *get;
 712                 struct rndis_query_c    *get_c;
 713         } u;
 714         int ret, buflen;
 715         int resplen, respoffs, copylen;
 716
 717         buflen = *len + sizeof(*u.get);
 718         if (buflen < CONTROL_BUFFER_SIZE)
 719                 buflen = CONTROL_BUFFER_SIZE;
 720
 721         if (buflen > COMMAND_BUFFER_SIZE) {
 722                 u.buf = kmalloc(buflen, GFP_KERNEL);
 723                 if (!u.buf)
 724                         return -ENOMEM;
 725         } else {
 726                 u.buf = priv->command_buffer;
 727         }
 728
 729         mutex_lock(&priv->command_lock);
 730
 731         memset(u.get, 0, sizeof *u.get);
 732         u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 733         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 734         u.get->oid = cpu_to_le32(oid);
 735
 736         priv->current_command_oid = oid;
 737         ret = rndis_command(dev, u.header, buflen);
 738         priv->current_command_oid = 0;
 739         if (ret < 0)
 740                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 741                            __func__, oid_to_string(oid), ret,
 742                            le32_to_cpu(u.get_c->status));
 743
 744         if (ret == 0) {
 745                 resplen = le32_to_cpu(u.get_c->len);
 746                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 747
 748                 if (respoffs > buflen) {
 749                         /* Device returned data offset outside buffer, error. */
 750                         netdev_dbg(dev->net, "%s(%s): received invalid "
 751                                 "data offset: %d > %d\n", __func__,
 752                                 oid_to_string(oid), respoffs, buflen);
 753
 754                         ret = -EINVAL;
 755                         goto exit_unlock;
 756                 }
 757
 758                 if ((resplen + respoffs) > buflen) {
 759                         /* Device would have returned more data if buffer would
 760                          * have been big enough. Copy just the bits that we got.
 761                          */
 762                         copylen = buflen - respoffs;
 763                 } else {
 764                         copylen = resplen;
 765                 }
 766
 767                 if (copylen > *len)
 768                         copylen = *len;
 769
 770                 memcpy(data, u.buf + respoffs, copylen);
 771
 772                 *len = resplen;
 773
 774                 ret = rndis_error_status(u.get_c->status);
 775                 if (ret < 0)
 776                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 777                                    __func__, oid_to_string(oid),
 778                                    le32_to_cpu(u.get_c->status), ret);
 779         }
 780
 781 exit_unlock:
 782         mutex_unlock(&priv->command_lock);
 783
 784         if (u.buf != priv->command_buffer)
 785                 kfree(u.buf);
 786         return ret;
 787 }
 788
 789 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 790                          int len)
 791 {
 792         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 793         union {
 794                 void                    *buf;
 795                 struct rndis_msg_hdr    *header;
 796                 struct rndis_set        *set;
 797                 struct rndis_set_c      *set_c;
 798         } u;
 799         int ret, buflen;
 800
 801         buflen = len + sizeof(*u.set);
 802         if (buflen < CONTROL_BUFFER_SIZE)
 803                 buflen = CONTROL_BUFFER_SIZE;
 804
 805         if (buflen > COMMAND_BUFFER_SIZE) {
 806                 u.buf = kmalloc(buflen, GFP_KERNEL);
 807                 if (!u.buf)
 808                         return -ENOMEM;
 809         } else {
 810                 u.buf = priv->command_buffer;
 811         }
 812
 813         mutex_lock(&priv->command_lock);
 814
 815         memset(u.set, 0, sizeof *u.set);
 816         u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 817         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 818         u.set->oid = cpu_to_le32(oid);
 819         u.set->len = cpu_to_le32(len);
 820         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 821         u.set->handle = cpu_to_le32(0);
 822         memcpy(u.buf + sizeof(*u.set), data, len);
 823
 824         priv->current_command_oid = oid;
 825         ret = rndis_command(dev, u.header, buflen);
 826         priv->current_command_oid = 0;
 827         if (ret < 0)
 828                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 829                            __func__, oid_to_string(oid), ret,
 830                            le32_to_cpu(u.set_c->status));
 831
 832         if (ret == 0) {
 833                 ret = rndis_error_status(u.set_c->status);
 834
 835                 if (ret < 0)
 836                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 837                                    __func__, oid_to_string(oid),
 838                                    le32_to_cpu(u.set_c->status), ret);
 839         }
 840
 841         mutex_unlock(&priv->command_lock);
 842
 843         if (u.buf != priv->command_buffer)
 844                 kfree(u.buf);
 845         return ret;
 846 }
 847
 848 static int rndis_reset(struct usbnet *usbdev)
 849 {
 850         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 851         struct rndis_reset *reset;
 852         int ret;
 853
 854         mutex_lock(&priv->command_lock);
 855
 856         reset = (void *)priv->command_buffer;
 857         memset(reset, 0, sizeof(*reset));
 858         reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 859         reset->msg_len = cpu_to_le32(sizeof(*reset));
 860         priv->current_command_oid = 0;
 861         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 862
 863         mutex_unlock(&priv->command_lock);
 864
 865         if (ret < 0)
 866                 return ret;
 867         return 0;
 868 }
 869
 870 /*
 871  * Specs say that we can only set config parameters only soon after device
 872  * initialization.
 873  *   value_type: 0 = u32, 2 = unicode string
 874  */
 875 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 876                                                 int value_type, void *value)
 877 {
 878         struct ndis_config_param *infobuf;
 879         int value_len, info_len, param_len, ret, i;
 880         __le16 *unibuf;
 881         __le32 *dst_value;
 882
 883         if (value_type == 0)
 884                 value_len = sizeof(__le32);
 885         else if (value_type == 2)
 886                 value_len = strlen(value) * sizeof(__le16);
 887         else
 888                 return -EINVAL;
 889
 890         param_len = strlen(param) * sizeof(__le16);
 891         info_len = sizeof(*infobuf) + param_len + value_len;
 892
 893 #ifdef DEBUG
 894         info_len += 12;
 895 #endif
 896         infobuf = kmalloc(info_len, GFP_KERNEL);
 897         if (!infobuf)
 898                 return -ENOMEM;
 899
 900 #ifdef DEBUG
 901         info_len -= 12;
 902         /* extra 12 bytes are for padding (debug output) */
 903         memset(infobuf, 0xCC, info_len + 12);
 904 #endif
 905
 906         if (value_type == 2)
 907                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 908                            param, (u8 *)value);
 909         else
 910                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 911                            param, *(u32 *)value);
 912
 913         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 914         infobuf->name_length = cpu_to_le32(param_len);
 915         infobuf->type = cpu_to_le32(value_type);
 916         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 917         infobuf->value_length = cpu_to_le32(value_len);
 918
 919         /* simple string to unicode string conversion */
 920         unibuf = (void *)infobuf + sizeof(*infobuf);
 921         for (i = 0; i < param_len / sizeof(__le16); i++)
 922                 unibuf[i] = cpu_to_le16(param[i]);
 923
 924         if (value_type == 2) {
 925                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 926                 for (i = 0; i < value_len / sizeof(__le16); i++)
 927                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 928         } else {
 929                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 930                 *dst_value = cpu_to_le32(*(u32 *)value);
 931         }
 932
 933 #ifdef DEBUG
 934         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 935         for (i = 0; i < info_len; i += 12) {
 936                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 937                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 938                            cpu_to_be32(tmp[0]),
 939                            cpu_to_be32(tmp[1]),
 940                            cpu_to_be32(tmp[2]));
 941         }
 942 #endif
 943
 944         ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 945                                                         infobuf, info_len);
 946         if (ret != 0)
 947                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 948                            ret);
 949
 950         kfree(infobuf);
 951         return ret;
 952 }
 953
 954 static int rndis_set_config_parameter_str(struct usbnet *dev,
 955                                                 char *param, char *value)
 956 {
 957         return rndis_set_config_parameter(dev, param, 2, value);
 958 }
 959
 960 /*
 961  * data conversion functions
 962  */
 963 static int level_to_qual(int level)
 964 {
 965         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 966         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 967 }
 968
 969 /*
 970  * common functions
 971  */
 972 static int set_infra_mode(struct usbnet *usbdev, int mode);
 973 static void restore_keys(struct usbnet *usbdev);
 974 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 975                                         bool *matched);
 976
 977 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 978 {
 979         __le32 tmp;
 980
 981         /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 982         tmp = cpu_to_le32(1);
 983         return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 984                                                         sizeof(tmp));
 985 }
 986
 987 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 988 {
 989         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 990         int ret;
 991
 992         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 993                             ssid, sizeof(*ssid));
 994         if (ret < 0) {
 995                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 996                 return ret;
 997         }
 998         if (ret == 0) {
 999                 priv->radio_on = true;
1000                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1001         }
1002
1003         return ret;
1004 }
1005
1006 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1007 {
1008         int ret;
1009
1010         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1011                             bssid, ETH_ALEN);
1012         if (ret < 0) {
1013                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1014                             bssid, ret);
1015                 return ret;
1016         }
1017
1018         return ret;
1019 }
1020
1021 static int clear_bssid(struct usbnet *usbdev)
1022 {
1023         static const u8 broadcast_mac[ETH_ALEN] = {
1024                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1025         };
1026
1027         return set_bssid(usbdev, broadcast_mac);
1028 }
1029
1030 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1031 {
1032         int ret, len;
1033
1034         len = ETH_ALEN;
1035         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1036                               bssid, &len);
1037
1038         if (ret != 0)
1039                 memset(bssid, 0, ETH_ALEN);
1040
1041         return ret;
1042 }
1043
1044 static int get_association_info(struct usbnet *usbdev,
1045                         struct ndis_80211_assoc_info *info, int len)
1046 {
1047         return rndis_query_oid(usbdev,
1048                         RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1049                         info, &len);
1050 }
1051
1052 static bool is_associated(struct usbnet *usbdev)
1053 {
1054         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1055         u8 bssid[ETH_ALEN];
1056         int ret;
1057
1058         if (!priv->radio_on)
1059                 return false;
1060
1061         ret = get_bssid(usbdev, bssid);
1062
1063         return (ret == 0 && !is_zero_ether_addr(bssid));
1064 }
1065
1066 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1067 {
1068         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1069         struct ndis_80211_ssid ssid;
1070         int i, ret = 0;
1071
1072         if (priv->radio_on) {
1073                 ret = rndis_set_oid(usbdev,
1074                                 RNDIS_OID_802_11_DISASSOCIATE,
1075                                 NULL, 0);
1076                 if (ret == 0) {
1077                         priv->radio_on = false;
1078                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1079                                    __func__);
1080
1081                         if (reset_ssid)
1082                                 msleep(100);
1083                 }
1084         }
1085
1086         /* disassociate causes radio to be turned off; if reset_ssid
1087          * is given, set random ssid to enable radio */
1088         if (reset_ssid) {
1089                 /* Set device to infrastructure mode so we don't get ad-hoc
1090                  * 'media connect' indications with the random ssid.
1091                  */
1092                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1093
1094                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1095                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1096                 ssid.essid[0] = 0x1;
1097                 ssid.essid[1] = 0xff;
1098                 for (i = 2; i < sizeof(ssid.essid); i++)
1099                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1100                 ret = set_essid(usbdev, &ssid);
1101         }
1102         return ret;
1103 }
1104
1105 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1106                                 enum nl80211_auth_type auth_type, int keymgmt)
1107 {
1108         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1109         __le32 tmp;
1110         int auth_mode, ret;
1111
1112         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1113                    __func__, wpa_version, auth_type, keymgmt);
1114
1115         if (wpa_version & NL80211_WPA_VERSION_2) {
1116                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1117                         auth_mode = NDIS_80211_AUTH_WPA2;
1118                 else
1119                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1120         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1121                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1122                         auth_mode = NDIS_80211_AUTH_WPA;
1123                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1124                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1125                 else
1126                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1127         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1128                 auth_mode = NDIS_80211_AUTH_SHARED;
1129         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1130                 auth_mode = NDIS_80211_AUTH_OPEN;
1131         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1132                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1133         else
1134                 return -ENOTSUPP;
1135
1136         tmp = cpu_to_le32(auth_mode);
1137         ret = rndis_set_oid(usbdev,
1138                             RNDIS_OID_802_11_AUTHENTICATION_MODE,
1139                             &tmp, sizeof(tmp));
1140         if (ret != 0) {
1141                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1142                             ret);
1143                 return ret;
1144         }
1145
1146         priv->wpa_version = wpa_version;
1147
1148         return 0;
1149 }
1150
1151 static int set_priv_filter(struct usbnet *usbdev)
1152 {
1153         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1154         __le32 tmp;
1155
1156         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1157                    __func__, priv->wpa_version);
1158
1159         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1160             priv->wpa_version & NL80211_WPA_VERSION_1)
1161                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1162         else
1163                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1164
1165         return rndis_set_oid(usbdev,
1166                              RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1167                              sizeof(tmp));
1168 }
1169
1170 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1171 {
1172         __le32 tmp;
1173         int encr_mode, ret;
1174
1175         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1176                    __func__, pairwise, groupwise);
1177
1178         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1179                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1180         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1181                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1182         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1183                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1184         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1185                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1186         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1187                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1188         else
1189                 encr_mode = NDIS_80211_ENCR_DISABLED;
1190
1191         tmp = cpu_to_le32(encr_mode);
1192         ret = rndis_set_oid(usbdev,
1193                         RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1194                         sizeof(tmp));
1195         if (ret != 0) {
1196                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1197                             ret);
1198                 return ret;
1199         }
1200
1201         return 0;
1202 }
1203
1204 static int set_infra_mode(struct usbnet *usbdev, int mode)
1205 {
1206         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1207         __le32 tmp;
1208         int ret;
1209
1210         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1211                    __func__, priv->infra_mode);
1212
1213         tmp = cpu_to_le32(mode);
1214         ret = rndis_set_oid(usbdev,
1215                             RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1216                             &tmp, sizeof(tmp));
1217         if (ret != 0) {
1218                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1219                             ret);
1220                 return ret;
1221         }
1222
1223         /* NDIS drivers clear keys when infrastructure mode is
1224          * changed. But Linux tools assume otherwise. So set the
1225          * keys */
1226         restore_keys(usbdev);
1227
1228         priv->infra_mode = mode;
1229         return 0;
1230 }
1231
1232 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1233 {
1234         __le32 tmp;
1235
1236         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1237
1238         if (rts_threshold < 0 || rts_threshold > 2347)
1239                 rts_threshold = 2347;
1240
1241         tmp = cpu_to_le32(rts_threshold);
1242         return rndis_set_oid(usbdev,
1243                              RNDIS_OID_802_11_RTS_THRESHOLD,
1244                              &tmp, sizeof(tmp));
1245 }
1246
1247 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1248 {
1249         __le32 tmp;
1250
1251         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1252
1253         if (frag_threshold < 256 || frag_threshold > 2346)
1254                 frag_threshold = 2346;
1255
1256         tmp = cpu_to_le32(frag_threshold);
1257         return rndis_set_oid(usbdev,
1258                         RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1259                         &tmp, sizeof(tmp));
1260 }
1261
1262 static void set_default_iw_params(struct usbnet *usbdev)
1263 {
1264         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1265         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1266                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1267         set_priv_filter(usbdev);
1268         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1269 }
1270
1271 static int deauthenticate(struct usbnet *usbdev)
1272 {
1273         int ret;
1274
1275         ret = disassociate(usbdev, true);
1276         set_default_iw_params(usbdev);
1277         return ret;
1278 }
1279
1280 static int set_channel(struct usbnet *usbdev, int channel)
1281 {
1282         struct ndis_80211_conf config;
1283         unsigned int dsconfig;
1284         int len, ret;
1285
1286         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1287
1288         /* this OID is valid only when not associated */
1289         if (is_associated(usbdev))
1290                 return 0;
1291
1292         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1293
1294         len = sizeof(config);
1295         ret = rndis_query_oid(usbdev,
1296                         RNDIS_OID_802_11_CONFIGURATION,
1297                         &config, &len);
1298         if (ret < 0) {
1299                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1300                            __func__);
1301                 return ret;
1302         }
1303
1304         config.ds_config = cpu_to_le32(dsconfig);
1305         ret = rndis_set_oid(usbdev,
1306                         RNDIS_OID_802_11_CONFIGURATION,
1307                         &config, sizeof(config));
1308
1309         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1310
1311         return ret;
1312 }
1313
1314 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1315                                                      u32 *beacon_period)
1316 {
1317         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1318         struct ieee80211_channel *channel;
1319         struct ndis_80211_conf config;
1320         int len, ret;
1321
1322         /* Get channel and beacon interval */
1323         len = sizeof(config);
1324         ret = rndis_query_oid(usbdev,
1325                         RNDIS_OID_802_11_CONFIGURATION,
1326                         &config, &len);
1327         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1328                                 __func__, ret);
1329         if (ret < 0)
1330                 return NULL;
1331
1332         channel = ieee80211_get_channel(priv->wdev.wiphy,
1333                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1334         if (!channel)
1335                 return NULL;
1336
1337         if (beacon_period)
1338                 *beacon_period = le32_to_cpu(config.beacon_period);
1339         return channel;
1340 }
1341
1342 /* index must be 0 - N, as per NDIS  */
1343 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1344                                                                 u8 index)
1345 {
1346         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1347         struct ndis_80211_wep_key ndis_key;
1348         u32 cipher;
1349         int ret;
1350
1351         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1352                    __func__, index, key_len);
1353
1354         if (index >= RNDIS_WLAN_NUM_KEYS)
1355                 return -EINVAL;
1356
1357         if (key_len == 5)
1358                 cipher = WLAN_CIPHER_SUITE_WEP40;
1359         else if (key_len == 13)
1360                 cipher = WLAN_CIPHER_SUITE_WEP104;
1361         else
1362                 return -EINVAL;
1363
1364         memset(&ndis_key, 0, sizeof(ndis_key));
1365
1366         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1367         ndis_key.length = cpu_to_le32(key_len);
1368         ndis_key.index = cpu_to_le32(index);
1369         memcpy(&ndis_key.material, key, key_len);
1370
1371         if (index == priv->encr_tx_key_index) {
1372                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1373                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1374                                                         RNDIS_WLAN_ALG_NONE);
1375                 if (ret)
1376                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1377                                     ret);
1378         }
1379
1380         ret = rndis_set_oid(usbdev,
1381                         RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1382                         sizeof(ndis_key));
1383         if (ret != 0) {
1384                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1385                             index + 1, ret);
1386                 return ret;
1387         }
1388
1389         priv->encr_keys[index].len = key_len;
1390         priv->encr_keys[index].cipher = cipher;
1391         memcpy(&priv->encr_keys[index].material, key, key_len);
1392         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1393
1394         return 0;
1395 }
1396
1397 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1398                         u8 index, const u8 *addr, const u8 *rx_seq,
1399                         int seq_len, u32 cipher, __le32 flags)
1400 {
1401         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1402         struct ndis_80211_key ndis_key;
1403         bool is_addr_ok;
1404         int ret;
1405
1406         if (index >= RNDIS_WLAN_NUM_KEYS) {
1407                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1408                            __func__, index);
1409                 return -EINVAL;
1410         }
1411         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1412                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1413                            __func__, key_len);
1414                 return -EINVAL;
1415         }
1416         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1417                 if (!rx_seq || seq_len <= 0) {
1418                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1419                                    __func__);
1420                         return -EINVAL;
1421                 }
1422                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1423                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1424                         return -EINVAL;
1425                 }
1426         }
1427
1428         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1429                                         !is_broadcast_ether_addr(addr);
1430         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1431                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1432                            __func__, addr);
1433                 return -EINVAL;
1434         }
1435
1436         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1437                    __func__, index,
1438                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1439                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1440                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1441
1442         memset(&ndis_key, 0, sizeof(ndis_key));
1443
1444         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1445                                 sizeof(ndis_key.material) + key_len);
1446         ndis_key.length = cpu_to_le32(key_len);
1447         ndis_key.index = cpu_to_le32(index) | flags;
1448
1449         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1450                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1451                  * different order than NDIS spec, so swap the order here. */
1452                 memcpy(ndis_key.material, key, 16);
1453                 memcpy(ndis_key.material + 16, key + 24, 8);
1454                 memcpy(ndis_key.material + 24, key + 16, 8);
1455         } else
1456                 memcpy(ndis_key.material, key, key_len);
1457
1458         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1459                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1460
1461         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1462                 /* pairwise key */
1463                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1464         } else {
1465                 /* group key */
1466                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1467                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1468                 else
1469                         get_bssid(usbdev, ndis_key.bssid);
1470         }
1471
1472         ret = rndis_set_oid(usbdev,
1473                         RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1474                         le32_to_cpu(ndis_key.size));
1475         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1476                    __func__, ret);
1477         if (ret != 0)
1478                 return ret;
1479
1480         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1481         priv->encr_keys[index].len = key_len;
1482         priv->encr_keys[index].cipher = cipher;
1483         memcpy(&priv->encr_keys[index].material, key, key_len);
1484         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1485                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1486         else
1487                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1488
1489         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1490                 priv->encr_tx_key_index = index;
1491
1492         return 0;
1493 }
1494
1495 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1496 {
1497         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1498         struct rndis_wlan_encr_key key;
1499
1500         if (is_wpa_key(priv, key_idx))
1501                 return 0;
1502
1503         key = priv->encr_keys[key_idx];
1504
1505         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1506
1507         if (key.len == 0)
1508                 return 0;
1509
1510         return add_wep_key(usbdev, key.material, key.len, key_idx);
1511 }
1512
1513 static void restore_keys(struct usbnet *usbdev)
1514 {
1515         int i;
1516
1517         for (i = 0; i < 4; i++)
1518                 restore_key(usbdev, i);
1519 }
1520
1521 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1522 {
1523         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1524 }
1525
1526 /* remove_key is for both wep and wpa */
1527 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1528 {
1529         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1530         struct ndis_80211_remove_key remove_key;
1531         __le32 keyindex;
1532         bool is_wpa;
1533         int ret;
1534
1535         if (index >= RNDIS_WLAN_NUM_KEYS)
1536                 return -ENOENT;
1537
1538         if (priv->encr_keys[index].len == 0)
1539                 return 0;
1540
1541         is_wpa = is_wpa_key(priv, index);
1542
1543         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1544                    __func__, index, is_wpa ? "wpa" : "wep",
1545                    priv->encr_keys[index].len);
1546
1547         clear_key(priv, index);
1548
1549         if (is_wpa) {
1550                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1551                 remove_key.index = cpu_to_le32(index);
1552                 if (bssid) {
1553                         /* pairwise key */
1554                         if (!is_broadcast_ether_addr(bssid))
1555                                 remove_key.index |=
1556                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1557                         memcpy(remove_key.bssid, bssid,
1558                                         sizeof(remove_key.bssid));
1559                 } else
1560                         memset(remove_key.bssid, 0xff,
1561                                                 sizeof(remove_key.bssid));
1562
1563                 ret = rndis_set_oid(usbdev,
1564                                 RNDIS_OID_802_11_REMOVE_KEY,
1565                                 &remove_key, sizeof(remove_key));
1566                 if (ret != 0)
1567                         return ret;
1568         } else {
1569                 keyindex = cpu_to_le32(index);
1570                 ret = rndis_set_oid(usbdev,
1571                                 RNDIS_OID_802_11_REMOVE_WEP,
1572                                 &keyindex, sizeof(keyindex));
1573                 if (ret != 0) {
1574                         netdev_warn(usbdev->net,
1575                                     "removing encryption key %d failed (%08X)\n",
1576                                     index, ret);
1577                         return ret;
1578                 }
1579         }
1580
1581         /* if it is transmit key, disable encryption */
1582         if (index == priv->encr_tx_key_index)
1583                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1584
1585         return 0;
1586 }
1587
1588 static void set_multicast_list(struct usbnet *usbdev)
1589 {
1590         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1591         struct netdev_hw_addr *ha;
1592         __le32 filter, basefilter;
1593         int ret;
1594         char *mc_addrs = NULL;
1595         int mc_count;
1596
1597         basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1598                                           RNDIS_PACKET_TYPE_BROADCAST);
1599
1600         if (usbdev->net->flags & IFF_PROMISC) {
1601                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1602                                       RNDIS_PACKET_TYPE_ALL_LOCAL);
1603         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1604                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1605         }
1606
1607         if (filter != basefilter)
1608                 goto set_filter;
1609
1610         /*
1611          * mc_list should be accessed holding the lock, so copy addresses to
1612          * local buffer first.
1613          */
1614         netif_addr_lock_bh(usbdev->net);
1615         mc_count = netdev_mc_count(usbdev->net);
1616         if (mc_count > priv->multicast_size) {
1617                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1618         } else if (mc_count) {
1619                 int i = 0;
1620
1621                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1622                 if (!mc_addrs) {
1623                         netdev_warn(usbdev->net,
1624                                     "couldn't alloc %d bytes of memory\n",
1625                                     mc_count * ETH_ALEN);
1626                         netif_addr_unlock_bh(usbdev->net);
1627                         return;
1628                 }
1629
1630                 netdev_for_each_mc_addr(ha, usbdev->net)
1631                         memcpy(mc_addrs + i++ * ETH_ALEN,
1632                                ha->addr, ETH_ALEN);
1633         }
1634         netif_addr_unlock_bh(usbdev->net);
1635
1636         if (filter != basefilter)
1637                 goto set_filter;
1638
1639         if (mc_count) {
1640                 ret = rndis_set_oid(usbdev,
1641                                 RNDIS_OID_802_3_MULTICAST_LIST,
1642                                 mc_addrs, mc_count * ETH_ALEN);
1643                 kfree(mc_addrs);
1644                 if (ret == 0)
1645                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1646                 else
1647                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1648
1649                 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1650                            mc_count, priv->multicast_size, ret);
1651         }
1652
1653 set_filter:
1654         ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1655                                                         sizeof(filter));
1656         if (ret < 0) {
1657                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1658                             le32_to_cpu(filter));
1659         }
1660
1661         netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1662                    le32_to_cpu(filter), ret);
1663 }
1664
1665 #ifdef DEBUG
1666 static void debug_print_pmkids(struct usbnet *usbdev,
1667                                 struct ndis_80211_pmkid *pmkids,
1668                                 const char *func_str)
1669 {
1670         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1671         int i, len, count, max_pmkids, entry_len;
1672
1673         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1674         len = le32_to_cpu(pmkids->length);
1675         count = le32_to_cpu(pmkids->bssid_info_count);
1676
1677         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1678
1679         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1680                                 "%d)\n", func_str, count, len, entry_len);
1681
1682         if (count > max_pmkids)
1683                 count = max_pmkids;
1684
1685         for (i = 0; i < count; i++) {
1686                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1687
1688                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1689                                 "pmkid: %08X:%08X:%08X:%08X\n",
1690                                 func_str, pmkids->bssid_info[i].bssid,
1691                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1692                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1693         }
1694 }
1695 #else
1696 static void debug_print_pmkids(struct usbnet *usbdev,
1697                                 struct ndis_80211_pmkid *pmkids,
1698                                 const char *func_str)
1699 {
1700         return;
1701 }
1702 #endif
1703
1704 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1705 {
1706         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1707         struct ndis_80211_pmkid *pmkids;
1708         int len, ret, max_pmkids;
1709
1710         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1711         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1712
1713         pmkids = kzalloc(len, GFP_KERNEL);
1714         if (!pmkids)
1715                 return ERR_PTR(-ENOMEM);
1716
1717         pmkids->length = cpu_to_le32(len);
1718         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1719
1720         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1721                         pmkids, &len);
1722         if (ret < 0) {
1723                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1724                                 " -> %d\n", __func__, len, max_pmkids, ret);
1725
1726                 kfree(pmkids);
1727                 return ERR_PTR(ret);
1728         }
1729
1730         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1731                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1732
1733         debug_print_pmkids(usbdev, pmkids, __func__);
1734
1735         return pmkids;
1736 }
1737
1738 static int set_device_pmkids(struct usbnet *usbdev,
1739                                 struct ndis_80211_pmkid *pmkids)
1740 {
1741         int ret, len, num_pmkids;
1742
1743         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1744         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1745         pmkids->length = cpu_to_le32(len);
1746
1747         debug_print_pmkids(usbdev, pmkids, __func__);
1748
1749         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1750                             le32_to_cpu(pmkids->length));
1751         if (ret < 0) {
1752                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1753                                 "\n", __func__, len, num_pmkids, ret);
1754         }
1755
1756         kfree(pmkids);
1757         return ret;
1758 }
1759
1760 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1761                                                 struct ndis_80211_pmkid *pmkids,
1762                                                 struct cfg80211_pmksa *pmksa,
1763                                                 int max_pmkids)
1764 {
1765         int i, newlen, err;
1766         unsigned int count;
1767
1768         count = le32_to_cpu(pmkids->bssid_info_count);
1769
1770         if (count > max_pmkids)
1771                 count = max_pmkids;
1772
1773         for (i = 0; i < count; i++)
1774                 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1775                                      pmksa->bssid))
1776                         break;
1777
1778         /* pmkid not found */
1779         if (i == count) {
1780                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1781                                         __func__, pmksa->bssid);
1782                 err = -ENOENT;
1783                 goto error;
1784         }
1785
1786         for (; i + 1 < count; i++)
1787                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1788
1789         count--;
1790         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1791
1792         pmkids->length = cpu_to_le32(newlen);
1793         pmkids->bssid_info_count = cpu_to_le32(count);
1794
1795         return pmkids;
1796 error:
1797         kfree(pmkids);
1798         return ERR_PTR(err);
1799 }
1800
1801 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1802                                                 struct ndis_80211_pmkid *pmkids,
1803                                                 struct cfg80211_pmksa *pmksa,
1804                                                 int max_pmkids)
1805 {
1806         struct ndis_80211_pmkid *new_pmkids;
1807         int i, err, newlen;
1808         unsigned int count;
1809
1810         count = le32_to_cpu(pmkids->bssid_info_count);
1811
1812         if (count > max_pmkids)
1813                 count = max_pmkids;
1814
1815         /* update with new pmkid */
1816         for (i = 0; i < count; i++) {
1817                 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1818                                       pmksa->bssid))
1819                         continue;
1820
1821                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1822                                                                 WLAN_PMKID_LEN);
1823
1824                 return pmkids;
1825         }
1826
1827         /* out of space, return error */
1828         if (i == max_pmkids) {
1829                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1830                 err = -ENOSPC;
1831                 goto error;
1832         }
1833
1834         /* add new pmkid */
1835         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1836
1837         new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1838         if (!new_pmkids) {
1839                 err = -ENOMEM;
1840                 goto error;
1841         }
1842         pmkids = new_pmkids;
1843
1844         pmkids->length = cpu_to_le32(newlen);
1845         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1846
1847         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1848         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1849
1850         return pmkids;
1851 error:
1852         kfree(pmkids);
1853         return ERR_PTR(err);
1854 }
1855
1856 /*
1857  * cfg80211 ops
1858  */
1859 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1860                                         struct net_device *dev,
1861                                         enum nl80211_iftype type, u32 *flags,
1862                                         struct vif_params *params)
1863 {
1864         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1865         struct usbnet *usbdev = priv->usbdev;
1866         int mode;
1867
1868         switch (type) {
1869         case NL80211_IFTYPE_ADHOC:
1870                 mode = NDIS_80211_INFRA_ADHOC;
1871                 break;
1872         case NL80211_IFTYPE_STATION:
1873                 mode = NDIS_80211_INFRA_INFRA;
1874                 break;
1875         default:
1876                 return -EINVAL;
1877         }
1878
1879         priv->wdev.iftype = type;
1880
1881         return set_infra_mode(usbdev, mode);
1882 }
1883
1884 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1885 {
1886         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1887         struct usbnet *usbdev = priv->usbdev;
1888         int err;
1889
1890         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1891                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1892                 if (err < 0)
1893                         return err;
1894         }
1895
1896         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1897                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1898                 if (err < 0)
1899                         return err;
1900         }
1901
1902         return 0;
1903 }
1904
1905 static int rndis_set_tx_power(struct wiphy *wiphy,
1906                               enum nl80211_tx_power_setting type,
1907                               int mbm)
1908 {
1909         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1910         struct usbnet *usbdev = priv->usbdev;
1911
1912         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1913                    __func__, type, mbm);
1914
1915         if (mbm < 0 || (mbm % 100))
1916                 return -ENOTSUPP;
1917
1918         /* Device doesn't support changing txpower after initialization, only
1919          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1920          * currently used.
1921          */
1922         if (type == NL80211_TX_POWER_AUTOMATIC ||
1923             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1924                 if (!priv->radio_on)
1925                         disassociate(usbdev, true); /* turn on radio */
1926
1927                 return 0;
1928         }
1929
1930         return -ENOTSUPP;
1931 }
1932
1933 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1934 {
1935         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1936         struct usbnet *usbdev = priv->usbdev;
1937
1938         *dbm = get_bcm4320_power_dbm(priv);
1939
1940         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1941
1942         return 0;
1943 }
1944
1945 #define SCAN_DELAY_JIFFIES (6 * HZ)
1946 static int rndis_scan(struct wiphy *wiphy,
1947                         struct cfg80211_scan_request *request)
1948 {
1949         struct net_device *dev = request->wdev->netdev;
1950         struct usbnet *usbdev = netdev_priv(dev);
1951         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1952         int ret;
1953         int delay = SCAN_DELAY_JIFFIES;
1954
1955         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1956
1957         /* Get current bssid list from device before new scan, as new scan
1958          * clears internal bssid list.
1959          */
1960         rndis_check_bssid_list(usbdev, NULL, NULL);
1961
1962         if (!request)
1963                 return -EINVAL;
1964
1965         if (priv->scan_request && priv->scan_request != request)
1966                 return -EBUSY;
1967
1968         priv->scan_request = request;
1969
1970         ret = rndis_start_bssid_list_scan(usbdev);
1971         if (ret == 0) {
1972                 if (priv->device_type == RNDIS_BCM4320A)
1973                         delay = HZ;
1974
1975                 /* Wait before retrieving scan results from device */
1976                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1977         }
1978
1979         return ret;
1980 }
1981
1982 static bool rndis_bss_info_update(struct usbnet *usbdev,
1983                                   struct ndis_80211_bssid_ex *bssid)
1984 {
1985         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1986         struct ieee80211_channel *channel;
1987         struct cfg80211_bss *bss;
1988         s32 signal;
1989         u64 timestamp;
1990         u16 capability;
1991         u16 beacon_interval;
1992         struct ndis_80211_fixed_ies *fixed;
1993         int ie_len, bssid_len;
1994         u8 *ie;
1995
1996         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1997                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1998
1999         /* parse bssid structure */
2000         bssid_len = le32_to_cpu(bssid->length);
2001
2002         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2003                         sizeof(struct ndis_80211_fixed_ies))
2004                 return NULL;
2005
2006         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2007
2008         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2009         ie_len = min(bssid_len - (int)sizeof(*bssid),
2010                                         (int)le32_to_cpu(bssid->ie_length));
2011         ie_len -= sizeof(struct ndis_80211_fixed_ies);
2012         if (ie_len < 0)
2013                 return NULL;
2014
2015         /* extract data for cfg80211_inform_bss */
2016         channel = ieee80211_get_channel(priv->wdev.wiphy,
2017                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2018         if (!channel)
2019                 return NULL;
2020
2021         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2022         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2023         capability = le16_to_cpu(fixed->capabilities);
2024         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2025
2026         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2027                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2028                 GFP_KERNEL);
2029         cfg80211_put_bss(bss);
2030
2031         return (bss != NULL);
2032 }
2033
2034 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2035                                         struct ndis_80211_bssid_ex *bssid,
2036                                         int *bssid_len, void *buf, int len)
2037 {
2038         void *buf_end, *bssid_end;
2039
2040         buf_end = (char *)buf + len;
2041         bssid_end = (char *)bssid + *bssid_len;
2042
2043         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2044                 *bssid_len = 0;
2045                 return NULL;
2046         } else {
2047                 bssid = (void *)((char *)bssid + *bssid_len);
2048                 *bssid_len = le32_to_cpu(bssid->length);
2049                 return bssid;
2050         }
2051 }
2052
2053 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2054                                   int bssid_len, void *buf, int len)
2055 {
2056         void *buf_end, *bssid_end;
2057
2058         if (!bssid || bssid_len <= 0 || bssid_len > len)
2059                 return false;
2060
2061         buf_end = (char *)buf + len;
2062         bssid_end = (char *)bssid + bssid_len;
2063
2064         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2065 }
2066
2067 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2068                                         bool *matched)
2069 {
2070         void *buf = NULL;
2071         struct ndis_80211_bssid_list_ex *bssid_list;
2072         struct ndis_80211_bssid_ex *bssid;
2073         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2074
2075         netdev_dbg(usbdev->net, "%s()\n", __func__);
2076
2077         len = CONTROL_BUFFER_SIZE;
2078 resize_buf:
2079         buf = kzalloc(len, GFP_KERNEL);
2080         if (!buf) {
2081                 ret = -ENOMEM;
2082                 goto out;
2083         }
2084
2085         /* BSSID-list might have got bigger last time we checked, keep
2086          * resizing until it won't get any bigger.
2087          */
2088         new_len = len;
2089         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2090                               buf, &new_len);
2091         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2092                 goto out;
2093
2094         if (new_len > len) {
2095                 len = new_len;
2096                 kfree(buf);
2097                 goto resize_buf;
2098         }
2099
2100         len = new_len;
2101
2102         bssid_list = buf;
2103         count = le32_to_cpu(bssid_list->num_items);
2104         real_count = 0;
2105         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2106
2107         bssid_len = 0;
2108         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2109
2110         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2111          * received 'num_items' and walking through full bssid buffer instead.
2112          */
2113         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2114                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2115                     matched) {
2116                         if (ether_addr_equal(bssid->mac, match_bssid))
2117                                 *matched = true;
2118                 }
2119
2120                 real_count++;
2121                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2122         }
2123
2124         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2125                                 " %d\n", __func__, count, real_count);
2126
2127 out:
2128         kfree(buf);
2129         return ret;
2130 }
2131
2132 static void rndis_get_scan_results(struct work_struct *work)
2133 {
2134         struct rndis_wlan_private *priv =
2135                 container_of(work, struct rndis_wlan_private, scan_work.work);
2136         struct usbnet *usbdev = priv->usbdev;
2137         int ret;
2138
2139         netdev_dbg(usbdev->net, "get_scan_results\n");
2140
2141         if (!priv->scan_request)
2142                 return;
2143
2144         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2145
2146         cfg80211_scan_done(priv->scan_request, ret < 0);
2147
2148         priv->scan_request = NULL;
2149 }
2150
2151 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2152                                         struct cfg80211_connect_params *sme)
2153 {
2154         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2155         struct usbnet *usbdev = priv->usbdev;
2156         struct ieee80211_channel *channel = sme->channel;
2157         struct ndis_80211_ssid ssid;
2158         int pairwise = RNDIS_WLAN_ALG_NONE;
2159         int groupwise = RNDIS_WLAN_ALG_NONE;
2160         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2161         int length, i, ret, chan = -1;
2162
2163         if (channel)
2164                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2165
2166         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2167         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2168                 pairwise |=
2169                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2170
2171         if (sme->crypto.n_ciphers_pairwise > 0 &&
2172                         pairwise == RNDIS_WLAN_ALG_NONE) {
2173                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2174                 return -ENOTSUPP;
2175         }
2176
2177         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2178                 keymgmt |=
2179                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2180
2181         if (sme->crypto.n_akm_suites > 0 &&
2182                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2183                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2184                 return -ENOTSUPP;
2185         }
2186
2187         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2188                    sme->ssid, sme->bssid, chan,
2189                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2190                    groupwise, pairwise, keymgmt);
2191
2192         if (is_associated(usbdev))
2193                 disassociate(usbdev, false);
2194
2195         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2196         if (ret < 0) {
2197                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2198                            ret);
2199                 goto err_turn_radio_on;
2200         }
2201
2202         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2203                                                                 keymgmt);
2204         if (ret < 0) {
2205                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2206                            ret);
2207                 goto err_turn_radio_on;
2208         }
2209
2210         set_priv_filter(usbdev);
2211
2212         ret = set_encr_mode(usbdev, pairwise, groupwise);
2213         if (ret < 0) {
2214                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2215                            ret);
2216                 goto err_turn_radio_on;
2217         }
2218
2219         if (channel) {
2220                 ret = set_channel(usbdev, chan);
2221                 if (ret < 0) {
2222                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2223                                    ret);
2224                         goto err_turn_radio_on;
2225                 }
2226         }
2227
2228         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2229                 priv->encr_tx_key_index = sme->key_idx;
2230                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2231                 if (ret < 0) {
2232                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2233                                    ret, sme->key_len, sme->key_idx);
2234                         goto err_turn_radio_on;
2235                 }
2236         }
2237
2238         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2239                                 !is_broadcast_ether_addr(sme->bssid)) {
2240                 ret = set_bssid(usbdev, sme->bssid);
2241                 if (ret < 0) {
2242                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2243                                    ret);
2244                         goto err_turn_radio_on;
2245                 }
2246         } else
2247                 clear_bssid(usbdev);
2248
2249         length = sme->ssid_len;
2250         if (length > NDIS_802_11_LENGTH_SSID)
2251                 length = NDIS_802_11_LENGTH_SSID;
2252
2253         memset(&ssid, 0, sizeof(ssid));
2254         ssid.length = cpu_to_le32(length);
2255         memcpy(ssid.essid, sme->ssid, length);
2256
2257         /* Pause and purge rx queue, so we don't pass packets before
2258          * 'media connect'-indication.
2259          */
2260         usbnet_pause_rx(usbdev);
2261         usbnet_purge_paused_rxq(usbdev);
2262
2263         ret = set_essid(usbdev, &ssid);
2264         if (ret < 0)
2265                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2266         return ret;
2267
2268 err_turn_radio_on:
2269         disassociate(usbdev, true);
2270
2271         return ret;
2272 }
2273
2274 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2275                                                                 u16 reason_code)
2276 {
2277         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2278         struct usbnet *usbdev = priv->usbdev;
2279
2280         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2281
2282         priv->connected = false;
2283         memset(priv->bssid, 0, ETH_ALEN);
2284
2285         return deauthenticate(usbdev);
2286 }
2287
2288 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2289                                         struct cfg80211_ibss_params *params)
2290 {
2291         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2292         struct usbnet *usbdev = priv->usbdev;
2293         struct ieee80211_channel *channel = params->channel;
2294         struct ndis_80211_ssid ssid;
2295         enum nl80211_auth_type auth_type;
2296         int ret, alg, length, chan = -1;
2297
2298         if (channel)
2299                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2300
2301         /* TODO: How to handle ad-hoc encryption?
2302          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2303          * pre-shared for encryption (open/shared/wpa), is key set before
2304          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2305          */
2306         if (params->privacy) {
2307                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2308                 alg = RNDIS_WLAN_ALG_WEP;
2309         } else {
2310                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2311                 alg = RNDIS_WLAN_ALG_NONE;
2312         }
2313
2314         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2315                    params->ssid, params->bssid, chan, params->privacy);
2316
2317         if (is_associated(usbdev))
2318                 disassociate(usbdev, false);
2319
2320         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2321         if (ret < 0) {
2322                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2323                            ret);
2324                 goto err_turn_radio_on;
2325         }
2326
2327         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2328         if (ret < 0) {
2329                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2330                            ret);
2331                 goto err_turn_radio_on;
2332         }
2333
2334         set_priv_filter(usbdev);
2335
2336         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2337         if (ret < 0) {
2338                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2339                            ret);
2340                 goto err_turn_radio_on;
2341         }
2342
2343         if (channel) {
2344                 ret = set_channel(usbdev, chan);
2345                 if (ret < 0) {
2346                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2347                                    ret);
2348                         goto err_turn_radio_on;
2349                 }
2350         }
2351
2352         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2353                                 !is_broadcast_ether_addr(params->bssid)) {
2354                 ret = set_bssid(usbdev, params->bssid);
2355                 if (ret < 0) {
2356                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2357                                    ret);
2358                         goto err_turn_radio_on;
2359                 }
2360         } else
2361                 clear_bssid(usbdev);
2362
2363         length = params->ssid_len;
2364         if (length > NDIS_802_11_LENGTH_SSID)
2365                 length = NDIS_802_11_LENGTH_SSID;
2366
2367         memset(&ssid, 0, sizeof(ssid));
2368         ssid.length = cpu_to_le32(length);
2369         memcpy(ssid.essid, params->ssid, length);
2370
2371         /* Don't need to pause rx queue for ad-hoc. */
2372         usbnet_purge_paused_rxq(usbdev);
2373         usbnet_resume_rx(usbdev);
2374
2375         ret = set_essid(usbdev, &ssid);
2376         if (ret < 0)
2377                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2378                            ret);
2379         return ret;
2380
2381 err_turn_radio_on:
2382         disassociate(usbdev, true);
2383
2384         return ret;
2385 }
2386
2387 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2388 {
2389         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2390         struct usbnet *usbdev = priv->usbdev;
2391
2392         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2393
2394         priv->connected = false;
2395         memset(priv->bssid, 0, ETH_ALEN);
2396
2397         return deauthenticate(usbdev);
2398 }
2399
2400 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2401                          u8 key_index, bool pairwise, const u8 *mac_addr,
2402                          struct key_params *params)
2403 {
2404         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2405         struct usbnet *usbdev = priv->usbdev;
2406         __le32 flags;
2407
2408         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2409                    __func__, key_index, mac_addr, params->cipher);
2410
2411         switch (params->cipher) {
2412         case WLAN_CIPHER_SUITE_WEP40:
2413         case WLAN_CIPHER_SUITE_WEP104:
2414                 return add_wep_key(usbdev, params->key, params->key_len,
2415                                                                 key_index);
2416         case WLAN_CIPHER_SUITE_TKIP:
2417         case WLAN_CIPHER_SUITE_CCMP:
2418                 flags = 0;
2419
2420                 if (params->seq && params->seq_len > 0)
2421                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2422                 if (mac_addr)
2423                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2424                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2425
2426                 return add_wpa_key(usbdev, params->key, params->key_len,
2427                                 key_index, mac_addr, params->seq,
2428                                 params->seq_len, params->cipher, flags);
2429         default:
2430                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2431                            __func__, params->cipher);
2432                 return -ENOTSUPP;
2433         }
2434 }
2435
2436 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2437                          u8 key_index, bool pairwise, const u8 *mac_addr)
2438 {
2439         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2440         struct usbnet *usbdev = priv->usbdev;
2441
2442         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2443
2444         return remove_key(usbdev, key_index, mac_addr);
2445 }
2446
2447 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2448                                  u8 key_index, bool unicast, bool multicast)
2449 {
2450         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2451         struct usbnet *usbdev = priv->usbdev;
2452         struct rndis_wlan_encr_key key;
2453
2454         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2455
2456         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2457                 return -ENOENT;
2458
2459         priv->encr_tx_key_index = key_index;
2460
2461         if (is_wpa_key(priv, key_index))
2462                 return 0;
2463
2464         key = priv->encr_keys[key_index];
2465
2466         return add_wep_key(usbdev, key.material, key.len, key_index);
2467 }
2468
2469 static void rndis_fill_station_info(struct usbnet *usbdev,
2470                                                 struct station_info *sinfo)
2471 {
2472         __le32 linkspeed, rssi;
2473         int ret, len;
2474
2475         memset(sinfo, 0, sizeof(*sinfo));
2476
2477         len = sizeof(linkspeed);
2478         ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2479         if (ret == 0) {
2480                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2481                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2482         }
2483
2484         len = sizeof(rssi);
2485         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2486                               &rssi, &len);
2487         if (ret == 0) {
2488                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2489                 sinfo->filled |= STATION_INFO_SIGNAL;
2490         }
2491 }
2492
2493 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2494                                         u8 *mac, struct station_info *sinfo)
2495 {
2496         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2497         struct usbnet *usbdev = priv->usbdev;
2498
2499         if (!ether_addr_equal(priv->bssid, mac))
2500                 return -ENOENT;
2501
2502         rndis_fill_station_info(usbdev, sinfo);
2503
2504         return 0;
2505 }
2506
2507 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2508                                int idx, u8 *mac, struct station_info *sinfo)
2509 {
2510         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2511         struct usbnet *usbdev = priv->usbdev;
2512
2513         if (idx != 0)
2514                 return -ENOENT;
2515
2516         memcpy(mac, priv->bssid, ETH_ALEN);
2517
2518         rndis_fill_station_info(usbdev, sinfo);
2519
2520         return 0;
2521 }
2522
2523 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2524                                 struct cfg80211_pmksa *pmksa)
2525 {
2526         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2527         struct usbnet *usbdev = priv->usbdev;
2528         struct ndis_80211_pmkid *pmkids;
2529         u32 *tmp = (u32 *)pmksa->pmkid;
2530
2531         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2532                         pmksa->bssid,
2533                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2534                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2535
2536         pmkids = get_device_pmkids(usbdev);
2537         if (IS_ERR(pmkids)) {
2538                 /* couldn't read PMKID cache from device */
2539                 return PTR_ERR(pmkids);
2540         }
2541
2542         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2543         if (IS_ERR(pmkids)) {
2544                 /* not found, list full, etc */
2545                 return PTR_ERR(pmkids);
2546         }
2547
2548         return set_device_pmkids(usbdev, pmkids);
2549 }
2550
2551 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2552                                 struct cfg80211_pmksa *pmksa)
2553 {
2554         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2555         struct usbnet *usbdev = priv->usbdev;
2556         struct ndis_80211_pmkid *pmkids;
2557         u32 *tmp = (u32 *)pmksa->pmkid;
2558
2559         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2560                         pmksa->bssid,
2561                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2562                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2563
2564         pmkids = get_device_pmkids(usbdev);
2565         if (IS_ERR(pmkids)) {
2566                 /* Couldn't read PMKID cache from device */
2567                 return PTR_ERR(pmkids);
2568         }
2569
2570         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2571         if (IS_ERR(pmkids)) {
2572                 /* not found, etc */
2573                 return PTR_ERR(pmkids);
2574         }
2575
2576         return set_device_pmkids(usbdev, pmkids);
2577 }
2578
2579 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2580 {
2581         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2582         struct usbnet *usbdev = priv->usbdev;
2583         struct ndis_80211_pmkid pmkid;
2584
2585         netdev_dbg(usbdev->net, "%s()\n", __func__);
2586
2587         memset(&pmkid, 0, sizeof(pmkid));
2588
2589         pmkid.length = cpu_to_le32(sizeof(pmkid));
2590         pmkid.bssid_info_count = cpu_to_le32(0);
2591
2592         return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2593                              &pmkid, sizeof(pmkid));
2594 }
2595
2596 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2597                                 bool enabled, int timeout)
2598 {
2599         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2600         struct usbnet *usbdev = priv->usbdev;
2601         int power_mode;
2602         __le32 mode;
2603         int ret;
2604
2605         if (priv->device_type != RNDIS_BCM4320B)
2606                 return -ENOTSUPP;
2607
2608         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2609                                 enabled ? "enabled" : "disabled",
2610                                 timeout);
2611
2612         if (enabled)
2613                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2614         else
2615                 power_mode = NDIS_80211_POWER_MODE_CAM;
2616
2617         if (power_mode == priv->power_mode)
2618                 return 0;
2619
2620         priv->power_mode = power_mode;
2621
2622         mode = cpu_to_le32(power_mode);
2623         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2624                             &mode, sizeof(mode));
2625
2626         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2627                                 __func__, ret);
2628
2629         return ret;
2630 }
2631
2632 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2633                                         struct net_device *dev,
2634                                         s32 rssi_thold, u32 rssi_hyst)
2635 {
2636         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2637
2638         priv->cqm_rssi_thold = rssi_thold;
2639         priv->cqm_rssi_hyst = rssi_hyst;
2640         priv->last_cqm_event_rssi = 0;
2641
2642         return 0;
2643 }
2644
2645 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2646                                            struct ndis_80211_assoc_info *info)
2647 {
2648         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2649         struct ieee80211_channel *channel;
2650         struct ndis_80211_ssid ssid;
2651         struct cfg80211_bss *bss;
2652         s32 signal;
2653         u64 timestamp;
2654         u16 capability;
2655         u32 beacon_period = 0;
2656         __le32 rssi;
2657         u8 ie_buf[34];
2658         int len, ret, ie_len;
2659
2660         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2661         len = sizeof(rssi);
2662         rssi = 0;
2663         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2664                               &rssi, &len);
2665         signal = level_to_qual(le32_to_cpu(rssi));
2666
2667         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2668                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2669                    level_to_qual(le32_to_cpu(rssi)));
2670
2671         /* Get AP capabilities */
2672         if (info) {
2673                 capability = le16_to_cpu(info->resp_ie.capa);
2674         } else {
2675                 /* Set atleast ESS/IBSS capability */
2676                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2677                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2678         }
2679
2680         /* Get channel and beacon interval */
2681         channel = get_current_channel(usbdev, &beacon_period);
2682         if (!channel) {
2683                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2684                                         __func__);
2685                 return;
2686         }
2687
2688         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2689         len = sizeof(ssid);
2690         memset(&ssid, 0, sizeof(ssid));
2691         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2692                               &ssid, &len);
2693         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2694                                 "'%.32s'\n", __func__, ret,
2695                                 le32_to_cpu(ssid.length), ssid.essid);
2696
2697         if (le32_to_cpu(ssid.length) > 32)
2698                 ssid.length = cpu_to_le32(32);
2699
2700         ie_buf[0] = WLAN_EID_SSID;
2701         ie_buf[1] = le32_to_cpu(ssid.length);
2702         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2703
2704         ie_len = le32_to_cpu(ssid.length) + 2;
2705
2706         /* no tsf */
2707         timestamp = 0;
2708
2709         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2710                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2711                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2712                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2713                 ssid.essid, signal);
2714
2715         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2716                 timestamp, capability, beacon_period, ie_buf, ie_len,
2717                 signal, GFP_KERNEL);
2718         cfg80211_put_bss(bss);
2719 }
2720
2721 /*
2722  * workers, indication handlers, device poller
2723  */
2724 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2725 {
2726         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2727         struct ndis_80211_assoc_info *info = NULL;
2728         u8 bssid[ETH_ALEN];
2729         unsigned int resp_ie_len, req_ie_len;
2730         unsigned int offset;
2731         u8 *req_ie, *resp_ie;
2732         int ret;
2733         bool roamed = false;
2734         bool match_bss;
2735
2736         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2737                 /* received media connect indication while connected, either
2738                  * device reassociated with same AP or roamed to new. */
2739                 roamed = true;
2740         }
2741
2742         req_ie_len = 0;
2743         resp_ie_len = 0;
2744         req_ie = NULL;
2745         resp_ie = NULL;
2746
2747         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2748                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2749                 if (!info) {
2750                         /* No memory? Try resume work later */
2751                         set_bit(WORK_LINK_UP, &priv->work_pending);
2752                         queue_work(priv->workqueue, &priv->work);
2753                         return;
2754                 }
2755
2756                 /* Get association info IEs from device. */
2757                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2758                 if (!ret) {
2759                         req_ie_len = le32_to_cpu(info->req_ie_length);
2760                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2761                                 req_ie_len = CONTROL_BUFFER_SIZE;
2762                         if (req_ie_len != 0) {
2763                                 offset = le32_to_cpu(info->offset_req_ies);
2764
2765                                 if (offset > CONTROL_BUFFER_SIZE)
2766                                         offset = CONTROL_BUFFER_SIZE;
2767
2768                                 req_ie = (u8 *)info + offset;
2769
2770                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2771                                         req_ie_len =
2772                                                 CONTROL_BUFFER_SIZE - offset;
2773                         }
2774
2775                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2776                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2777                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2778                         if (resp_ie_len != 0) {
2779                                 offset = le32_to_cpu(info->offset_resp_ies);
2780
2781                                 if (offset > CONTROL_BUFFER_SIZE)
2782                                         offset = CONTROL_BUFFER_SIZE;
2783
2784                                 resp_ie = (u8 *)info + offset;
2785
2786                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2787                                         resp_ie_len =
2788                                                 CONTROL_BUFFER_SIZE - offset;
2789                         }
2790                 } else {
2791                         /* Since rndis_wlan_craft_connected_bss() might use info
2792                          * later and expects info to contain valid data if
2793                          * non-null, free info and set NULL here.
2794                          */
2795                         kfree(info);
2796                         info = NULL;
2797                 }
2798         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2799                 return;
2800
2801         ret = get_bssid(usbdev, bssid);
2802         if (ret < 0)
2803                 memset(bssid, 0, sizeof(bssid));
2804
2805         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2806                    bssid, roamed ? " roamed" : "");
2807
2808         /* Internal bss list in device should contain at least the currently
2809          * connected bss and we can get it to cfg80211 with
2810          * rndis_check_bssid_list().
2811          *
2812          * NDIS spec says: "If the device is associated, but the associated
2813          *  BSSID is not in its BSSID scan list, then the driver must add an
2814          *  entry for the BSSID at the end of the data that it returns in
2815          *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2816          *
2817          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2818          */
2819         match_bss = false;
2820         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2821
2822         if (!is_zero_ether_addr(bssid) && !match_bss) {
2823                 /* Couldn't get bss from device, we need to manually craft bss
2824                  * for cfg80211.
2825                  */
2826                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2827         }
2828
2829         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2830                 if (!roamed)
2831                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2832                                                 req_ie_len, resp_ie,
2833                                                 resp_ie_len, 0, GFP_KERNEL);
2834                 else
2835                         cfg80211_roamed(usbdev->net,
2836                                         get_current_channel(usbdev, NULL),
2837                                         bssid, req_ie, req_ie_len,
2838                                         resp_ie, resp_ie_len, GFP_KERNEL);
2839         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2840                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2841
2842         if (info != NULL)
2843                 kfree(info);
2844
2845         priv->connected = true;
2846         memcpy(priv->bssid, bssid, ETH_ALEN);
2847
2848         usbnet_resume_rx(usbdev);
2849         netif_carrier_on(usbdev->net);
2850 }
2851
2852 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2853 {
2854         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2855
2856         if (priv->connected) {
2857                 priv->connected = false;
2858                 memset(priv->bssid, 0, ETH_ALEN);
2859
2860                 deauthenticate(usbdev);
2861
2862                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2863         }
2864
2865         netif_carrier_off(usbdev->net);
2866 }
2867
2868 static void rndis_wlan_worker(struct work_struct *work)
2869 {
2870         struct rndis_wlan_private *priv =
2871                 container_of(work, struct rndis_wlan_private, work);
2872         struct usbnet *usbdev = priv->usbdev;
2873
2874         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2875                 rndis_wlan_do_link_up_work(usbdev);
2876
2877         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2878                 rndis_wlan_do_link_down_work(usbdev);
2879
2880         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2881                 set_multicast_list(usbdev);
2882 }
2883
2884 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2885 {
2886         struct usbnet *usbdev = netdev_priv(dev);
2887         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2888
2889         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2890                 return;
2891
2892         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2893         queue_work(priv->workqueue, &priv->work);
2894 }
2895
2896 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2897                                 struct ndis_80211_status_indication *indication,
2898                                 int len)
2899 {
2900         u8 *buf;
2901         const char *type;
2902         int flags, buflen, key_id;
2903         bool pairwise_error, group_error;
2904         struct ndis_80211_auth_request *auth_req;
2905         enum nl80211_key_type key_type;
2906
2907         /* must have at least one array entry */
2908         if (len < offsetof(struct ndis_80211_status_indication, u) +
2909                                 sizeof(struct ndis_80211_auth_request)) {
2910                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2911                             len);
2912                 return;
2913         }
2914
2915         buf = (void *)&indication->u.auth_request[0];
2916         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2917
2918         while (buflen >= sizeof(*auth_req)) {
2919                 auth_req = (void *)buf;
2920                 type = "unknown";
2921                 flags = le32_to_cpu(auth_req->flags);
2922                 pairwise_error = false;
2923                 group_error = false;
2924
2925                 if (flags & 0x1)
2926                         type = "reauth request";
2927                 if (flags & 0x2)
2928                         type = "key update request";
2929                 if (flags & 0x6) {
2930                         pairwise_error = true;
2931                         type = "pairwise_error";
2932                 }
2933                 if (flags & 0xe) {
2934                         group_error = true;
2935                         type = "group_error";
2936                 }
2937
2938                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2939                             type, le32_to_cpu(auth_req->flags));
2940
2941                 if (pairwise_error) {
2942                         key_type = NL80211_KEYTYPE_PAIRWISE;
2943                         key_id = -1;
2944
2945                         cfg80211_michael_mic_failure(usbdev->net,
2946                                                         auth_req->bssid,
2947                                                         key_type, key_id, NULL,
2948                                                         GFP_KERNEL);
2949                 }
2950
2951                 if (group_error) {
2952                         key_type = NL80211_KEYTYPE_GROUP;
2953                         key_id = -1;
2954
2955                         cfg80211_michael_mic_failure(usbdev->net,
2956                                                         auth_req->bssid,
2957                                                         key_type, key_id, NULL,
2958                                                         GFP_KERNEL);
2959                 }
2960
2961                 buflen -= le32_to_cpu(auth_req->length);
2962                 buf += le32_to_cpu(auth_req->length);
2963         }
2964 }
2965
2966 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2967                                 struct ndis_80211_status_indication *indication,
2968                                 int len)
2969 {
2970         struct ndis_80211_pmkid_cand_list *cand_list;
2971         int list_len, expected_len, i;
2972
2973         if (len < offsetof(struct ndis_80211_status_indication, u) +
2974                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2975                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2976                             len);
2977                 return;
2978         }
2979
2980         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2981                         sizeof(struct ndis_80211_pmkid_candidate);
2982         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2983                         offsetof(struct ndis_80211_status_indication, u);
2984
2985         if (len < expected_len) {
2986                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2987                             len, expected_len);
2988                 return;
2989         }
2990
2991         cand_list = &indication->u.cand_list;
2992
2993         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2994                     le32_to_cpu(cand_list->version),
2995                     le32_to_cpu(cand_list->num_candidates));
2996
2997         if (le32_to_cpu(cand_list->version) != 1)
2998                 return;
2999
3000         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3001                 struct ndis_80211_pmkid_candidate *cand =
3002                                                 &cand_list->candidate_list[i];
3003                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3004
3005                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3006                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3007
3008                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3009                                                 preauth, GFP_ATOMIC);
3010         }
3011 }
3012
3013 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3014                         struct rndis_indicate *msg, int buflen)
3015 {
3016         struct ndis_80211_status_indication *indication;
3017         unsigned int len, offset;
3018
3019         offset = offsetof(struct rndis_indicate, status) +
3020                         le32_to_cpu(msg->offset);
3021         len = le32_to_cpu(msg->length);
3022
3023         if (len < 8) {
3024                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3025                             len);
3026                 return;
3027         }
3028
3029         if (len > buflen || offset > buflen || offset + len > buflen) {
3030                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3031                             offset + len, buflen);
3032                 return;
3033         }
3034
3035         indication = (void *)((u8 *)msg + offset);
3036
3037         switch (le32_to_cpu(indication->status_type)) {
3038         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3039                 netdev_info(usbdev->net, "radio state indication: %i\n",
3040                             le32_to_cpu(indication->u.radio_status));
3041                 return;
3042
3043         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3044                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3045                             le32_to_cpu(indication->u.media_stream_mode));
3046                 return;
3047
3048         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3049                 rndis_wlan_auth_indication(usbdev, indication, len);
3050                 return;
3051
3052         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3053                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3054                 return;
3055
3056         default:
3057                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3058                             le32_to_cpu(indication->status_type));
3059         }
3060 }
3061
3062 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3063 {
3064         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3065         struct rndis_indicate *msg = ind;
3066
3067         switch (le32_to_cpu(msg->status)) {
3068         case RNDIS_STATUS_MEDIA_CONNECT:
3069                 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3070                         /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3071                          * "media connect" indications which confuses driver
3072                          * and userspace to think that device is
3073                          * roaming/reassociating when it isn't.
3074                          */
3075                         netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3076                         return;
3077                 }
3078
3079                 usbnet_pause_rx(usbdev);
3080
3081                 netdev_info(usbdev->net, "media connect\n");
3082
3083                 /* queue work to avoid recursive calls into rndis_command */
3084                 set_bit(WORK_LINK_UP, &priv->work_pending);
3085                 queue_work(priv->workqueue, &priv->work);
3086                 break;
3087
3088         case RNDIS_STATUS_MEDIA_DISCONNECT:
3089                 netdev_info(usbdev->net, "media disconnect\n");
3090
3091                 /* queue work to avoid recursive calls into rndis_command */
3092                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3093                 queue_work(priv->workqueue, &priv->work);
3094                 break;
3095
3096         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3097                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3098                 break;
3099
3100         default:
3101                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3102                             le32_to_cpu(msg->status));
3103                 break;
3104         }
3105 }
3106
3107 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3108 {
3109         struct {
3110                 __le32  num_items;
3111                 __le32  items[8];
3112         } networks_supported;
3113         struct ndis_80211_capability *caps;
3114         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3115         int len, retval, i, n;
3116         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3117
3118         /* determine supported modes */
3119         len = sizeof(networks_supported);
3120         retval = rndis_query_oid(usbdev,
3121                                  RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3122                                  &networks_supported, &len);
3123         if (retval >= 0) {
3124                 n = le32_to_cpu(networks_supported.num_items);
3125                 if (n > 8)
3126                         n = 8;
3127                 for (i = 0; i < n; i++) {
3128                         switch (le32_to_cpu(networks_supported.items[i])) {
3129                         case NDIS_80211_TYPE_FREQ_HOP:
3130                         case NDIS_80211_TYPE_DIRECT_SEQ:
3131                                 priv->caps |= CAP_MODE_80211B;
3132                                 break;
3133                         case NDIS_80211_TYPE_OFDM_A:
3134                                 priv->caps |= CAP_MODE_80211A;
3135                                 break;
3136                         case NDIS_80211_TYPE_OFDM_G:
3137                                 priv->caps |= CAP_MODE_80211G;
3138                                 break;
3139                         }
3140                 }
3141         }
3142
3143         /* get device 802.11 capabilities, number of PMKIDs */
3144         caps = (struct ndis_80211_capability *)caps_buf;
3145         len = sizeof(caps_buf);
3146         retval = rndis_query_oid(usbdev,
3147                                  RNDIS_OID_802_11_CAPABILITY,
3148                                  caps, &len);
3149         if (retval >= 0) {
3150                 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3151                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3152                                 le32_to_cpu(caps->length),
3153                                 le32_to_cpu(caps->version),
3154                                 le32_to_cpu(caps->num_pmkids),
3155                                 le32_to_cpu(caps->num_auth_encr_pair));
3156                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3157         } else
3158                 wiphy->max_num_pmkids = 0;
3159
3160         return retval;
3161 }
3162
3163 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3164 {
3165         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3166         enum nl80211_cqm_rssi_threshold_event event;
3167         int thold, hyst, last_event;
3168
3169         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3170                 return;
3171         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3172                 return;
3173
3174         last_event = priv->last_cqm_event_rssi;
3175         thold = priv->cqm_rssi_thold;
3176         hyst = priv->cqm_rssi_hyst;
3177
3178         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3179                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3180         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3181                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3182         else
3183                 return;
3184
3185         priv->last_cqm_event_rssi = rssi;
3186         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3187 }
3188
3189 #define DEVICE_POLLER_JIFFIES (HZ)
3190 static void rndis_device_poller(struct work_struct *work)
3191 {
3192         struct rndis_wlan_private *priv =
3193                 container_of(work, struct rndis_wlan_private,
3194                                                         dev_poller_work.work);
3195         struct usbnet *usbdev = priv->usbdev;
3196         __le32 rssi, tmp;
3197         int len, ret, j;
3198         int update_jiffies = DEVICE_POLLER_JIFFIES;
3199         void *buf;
3200
3201         /* Only check/do workaround when connected. Calling is_associated()
3202          * also polls device with rndis_command() and catches for media link
3203          * indications.
3204          */
3205         if (!is_associated(usbdev)) {
3206                 /* Workaround bad scanning in BCM4320a devices with active
3207                  * background scanning when not associated.
3208                  */
3209                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3210                     !priv->scan_request) {
3211                         /* Get previous scan results */
3212                         rndis_check_bssid_list(usbdev, NULL, NULL);
3213
3214                         /* Initiate new scan */
3215                         rndis_start_bssid_list_scan(usbdev);
3216                 }
3217
3218                 goto end;
3219         }
3220
3221         len = sizeof(rssi);
3222         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3223                               &rssi, &len);
3224         if (ret == 0) {
3225                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3226                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3227         }
3228
3229         netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3230                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3231
3232         /* Workaround transfer stalls on poor quality links.
3233          * TODO: find right way to fix these stalls (as stalls do not happen
3234          * with ndiswrapper/windows driver). */
3235         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3236                 /* Decrease stats worker interval to catch stalls.
3237                  * faster. Faster than 400-500ms causes packet loss,
3238                  * Slower doesn't catch stalls fast enough.
3239                  */
3240                 j = msecs_to_jiffies(priv->param_workaround_interval);
3241                 if (j > DEVICE_POLLER_JIFFIES)
3242                         j = DEVICE_POLLER_JIFFIES;
3243                 else if (j <= 0)
3244                         j = 1;
3245                 update_jiffies = j;
3246
3247                 /* Send scan OID. Use of both OIDs is required to get device
3248                  * working.
3249                  */
3250                 tmp = cpu_to_le32(1);
3251                 rndis_set_oid(usbdev,
3252                               RNDIS_OID_802_11_BSSID_LIST_SCAN,
3253                               &tmp, sizeof(tmp));
3254
3255                 len = CONTROL_BUFFER_SIZE;
3256                 buf = kmalloc(len, GFP_KERNEL);
3257                 if (!buf)
3258                         goto end;
3259
3260                 rndis_query_oid(usbdev,
3261                                 RNDIS_OID_802_11_BSSID_LIST,
3262                                 buf, &len);
3263                 kfree(buf);
3264         }
3265
3266 end:
3267         if (update_jiffies >= HZ)
3268                 update_jiffies = round_jiffies_relative(update_jiffies);
3269         else {
3270                 j = round_jiffies_relative(update_jiffies);
3271                 if (abs(j - update_jiffies) <= 10)
3272                         update_jiffies = j;
3273         }
3274
3275         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3276                                                                 update_jiffies);
3277 }
3278
3279 /*
3280  * driver/device initialization
3281  */
3282 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3283 {
3284         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3285
3286         priv->device_type = device_type;
3287
3288         priv->param_country[0] = modparam_country[0];
3289         priv->param_country[1] = modparam_country[1];
3290         priv->param_country[2] = 0;
3291         priv->param_frameburst   = modparam_frameburst;
3292         priv->param_afterburner  = modparam_afterburner;
3293         priv->param_power_save   = modparam_power_save;
3294         priv->param_power_output = modparam_power_output;
3295         priv->param_roamtrigger  = modparam_roamtrigger;
3296         priv->param_roamdelta    = modparam_roamdelta;
3297
3298         priv->param_country[0] = toupper(priv->param_country[0]);
3299         priv->param_country[1] = toupper(priv->param_country[1]);
3300         /* doesn't support EU as country code, use FI instead */
3301         if (!strcmp(priv->param_country, "EU"))
3302                 strcpy(priv->param_country, "FI");
3303
3304         if (priv->param_power_save < 0)
3305                 priv->param_power_save = 0;
3306         else if (priv->param_power_save > 2)
3307                 priv->param_power_save = 2;
3308
3309         if (priv->param_power_output < 0)
3310                 priv->param_power_output = 0;
3311         else if (priv->param_power_output > 3)
3312                 priv->param_power_output = 3;
3313
3314         if (priv->param_roamtrigger < -80)
3315                 priv->param_roamtrigger = -80;
3316         else if (priv->param_roamtrigger > -60)
3317                 priv->param_roamtrigger = -60;
3318
3319         if (priv->param_roamdelta < 0)
3320                 priv->param_roamdelta = 0;
3321         else if (priv->param_roamdelta > 2)
3322                 priv->param_roamdelta = 2;
3323
3324         if (modparam_workaround_interval < 0)
3325                 priv->param_workaround_interval = 500;
3326         else
3327                 priv->param_workaround_interval = modparam_workaround_interval;
3328 }
3329
3330 static int unknown_early_init(struct usbnet *usbdev)
3331 {
3332         /* copy module parameters for unknown so that iwconfig reports txpower
3333          * and workaround parameter is copied to private structure correctly.
3334          */
3335         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3336
3337         /* This is unknown device, so do not try set configuration parameters.
3338          */
3339
3340         return 0;
3341 }
3342
3343 static int bcm4320a_early_init(struct usbnet *usbdev)
3344 {
3345         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3346          * and workaround parameter is copied to private structure correctly.
3347          */
3348         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3349
3350         /* bcm4320a doesn't handle configuration parameters well. Try
3351          * set any and you get partially zeroed mac and broken device.
3352          */
3353
3354         return 0;
3355 }
3356
3357 static int bcm4320b_early_init(struct usbnet *usbdev)
3358 {
3359         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3360         char buf[8];
3361
3362         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3363
3364         /* Early initialization settings, setting these won't have effect
3365          * if called after generic_rndis_bind().
3366          */
3367
3368         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3369         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3370                                         priv->param_frameburst ? "1" : "0");
3371         rndis_set_config_parameter_str(usbdev, "Afterburner",
3372                                         priv->param_afterburner ? "1" : "0");
3373         sprintf(buf, "%d", priv->param_power_save);
3374         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3375         sprintf(buf, "%d", priv->param_power_output);
3376         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3377         sprintf(buf, "%d", priv->param_roamtrigger);
3378         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3379         sprintf(buf, "%d", priv->param_roamdelta);
3380         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3381
3382         return 0;
3383 }
3384
3385 /* same as rndis_netdev_ops but with local multicast handler */
3386 static const struct net_device_ops rndis_wlan_netdev_ops = {
3387         .ndo_open               = usbnet_open,
3388         .ndo_stop               = usbnet_stop,
3389         .ndo_start_xmit         = usbnet_start_xmit,
3390         .ndo_tx_timeout         = usbnet_tx_timeout,
3391         .ndo_set_mac_address    = eth_mac_addr,
3392         .ndo_validate_addr      = eth_validate_addr,
3393         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3394 };
3395
3396 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3397 {
3398         struct wiphy *wiphy;
3399         struct rndis_wlan_private *priv;
3400         int retval, len;
3401         __le32 tmp;
3402
3403         /* allocate wiphy and rndis private data
3404          * NOTE: We only support a single virtual interface, so wiphy
3405          * and wireless_dev are somewhat synonymous for this device.
3406          */
3407         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3408         if (!wiphy)
3409                 return -ENOMEM;
3410
3411         priv = wiphy_priv(wiphy);
3412         usbdev->net->ieee80211_ptr = &priv->wdev;
3413         priv->wdev.wiphy = wiphy;
3414         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3415
3416         /* These have to be initialized before calling generic_rndis_bind().
3417          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3418          */
3419         usbdev->driver_priv = priv;
3420         priv->usbdev = usbdev;
3421
3422         mutex_init(&priv->command_lock);
3423
3424         /* because rndis_command() sleeps we need to use workqueue */
3425         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3426         INIT_WORK(&priv->work, rndis_wlan_worker);
3427         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3428         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3429
3430         /* try bind rndis_host */
3431         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3432         if (retval < 0)
3433                 goto fail;
3434
3435         /* generic_rndis_bind set packet filter to multicast_all+
3436          * promisc mode which doesn't work well for our devices (device
3437          * picks up rssi to closest station instead of to access point).
3438          *
3439          * rndis_host wants to avoid all OID as much as possible
3440          * so do promisc/multicast handling in rndis_wlan.
3441          */
3442         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3443
3444         tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3445         retval = rndis_set_oid(usbdev,
3446                                RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3447                                &tmp, sizeof(tmp));
3448
3449         len = sizeof(tmp);
3450         retval = rndis_query_oid(usbdev,
3451                                  RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3452                                  &tmp, &len);
3453         priv->multicast_size = le32_to_cpu(tmp);
3454         if (retval < 0 || priv->multicast_size < 0)
3455                 priv->multicast_size = 0;
3456         if (priv->multicast_size > 0)
3457                 usbdev->net->flags |= IFF_MULTICAST;
3458         else
3459                 usbdev->net->flags &= ~IFF_MULTICAST;
3460
3461         /* fill-out wiphy structure and register w/ cfg80211 */
3462         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3463         wiphy->privid = rndis_wiphy_privid;
3464         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3465                                         | BIT(NL80211_IFTYPE_ADHOC);
3466         wiphy->max_scan_ssids = 1;
3467
3468         /* TODO: fill-out band/encr information based on priv->caps */
3469         rndis_wlan_get_caps(usbdev, wiphy);
3470
3471         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3472         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3473         priv->band.channels = priv->channels;
3474         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3475         priv->band.bitrates = priv->rates;
3476         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3477         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3478         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3479
3480         memcpy(priv->cipher_suites, rndis_cipher_suites,
3481                                                 sizeof(rndis_cipher_suites));
3482         wiphy->cipher_suites = priv->cipher_suites;
3483         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3484
3485         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3486
3487         if (wiphy_register(wiphy)) {
3488                 retval = -ENODEV;
3489                 goto fail;
3490         }
3491
3492         set_default_iw_params(usbdev);
3493
3494         priv->power_mode = -1;
3495
3496         /* set default rts/frag */
3497         rndis_set_wiphy_params(wiphy,
3498                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3499
3500         /* turn radio off on init */
3501         priv->radio_on = false;
3502         disassociate(usbdev, false);
3503         netif_carrier_off(usbdev->net);
3504
3505         return 0;
3506
3507 fail:
3508         cancel_delayed_work_sync(&priv->dev_poller_work);
3509         cancel_delayed_work_sync(&priv->scan_work);
3510         cancel_work_sync(&priv->work);
3511         flush_workqueue(priv->workqueue);
3512         destroy_workqueue(priv->workqueue);
3513
3514         wiphy_free(wiphy);
3515         return retval;
3516 }
3517
3518 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3519 {
3520         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3521
3522         /* turn radio off */
3523         disassociate(usbdev, false);
3524
3525         cancel_delayed_work_sync(&priv->dev_poller_work);
3526         cancel_delayed_work_sync(&priv->scan_work);
3527         cancel_work_sync(&priv->work);
3528         flush_workqueue(priv->workqueue);
3529         destroy_workqueue(priv->workqueue);
3530
3531         rndis_unbind(usbdev, intf);
3532
3533         wiphy_unregister(priv->wdev.wiphy);
3534         wiphy_free(priv->wdev.wiphy);
3535 }
3536
3537 static int rndis_wlan_reset(struct usbnet *usbdev)
3538 {
3539         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3540         int retval;
3541
3542         netdev_dbg(usbdev->net, "%s()\n", __func__);
3543
3544         retval = rndis_reset(usbdev);
3545         if (retval)
3546                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3547
3548         /* rndis_reset cleared multicast list, so restore here.
3549            (set_multicast_list() also turns on current packet filter) */
3550         set_multicast_list(usbdev);
3551
3552         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3553                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3554
3555         return deauthenticate(usbdev);
3556 }
3557
3558 static int rndis_wlan_stop(struct usbnet *usbdev)
3559 {
3560         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3561         int retval;
3562         __le32 filter;
3563
3564         netdev_dbg(usbdev->net, "%s()\n", __func__);
3565
3566         retval = disassociate(usbdev, false);
3567
3568         priv->work_pending = 0;
3569         cancel_delayed_work_sync(&priv->dev_poller_work);
3570         cancel_delayed_work_sync(&priv->scan_work);
3571         cancel_work_sync(&priv->work);
3572         flush_workqueue(priv->workqueue);
3573
3574         if (priv->scan_request) {
3575                 cfg80211_scan_done(priv->scan_request, true);
3576                 priv->scan_request = NULL;
3577         }
3578
3579         /* Set current packet filter zero to block receiving data packets from
3580            device. */
3581         filter = 0;
3582         rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3583                                                                 sizeof(filter));
3584
3585         return retval;
3586 }
3587
3588 static const struct driver_info bcm4320b_info = {
3589         .description =  "Wireless RNDIS device, BCM4320b based",
3590         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3591                                 FLAG_AVOID_UNLINK_URBS,
3592         .bind =         rndis_wlan_bind,
3593         .unbind =       rndis_wlan_unbind,
3594         .status =       rndis_status,
3595         .rx_fixup =     rndis_rx_fixup,
3596         .tx_fixup =     rndis_tx_fixup,
3597         .reset =        rndis_wlan_reset,
3598         .stop =         rndis_wlan_stop,
3599         .early_init =   bcm4320b_early_init,
3600         .indication =   rndis_wlan_indication,
3601 };
3602
3603 static const struct driver_info bcm4320a_info = {
3604         .description =  "Wireless RNDIS device, BCM4320a based",
3605         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3606                                 FLAG_AVOID_UNLINK_URBS,
3607         .bind =         rndis_wlan_bind,
3608         .unbind =       rndis_wlan_unbind,
3609         .status =       rndis_status,
3610         .rx_fixup =     rndis_rx_fixup,
3611         .tx_fixup =     rndis_tx_fixup,
3612         .reset =        rndis_wlan_reset,
3613         .stop =         rndis_wlan_stop,
3614         .early_init =   bcm4320a_early_init,
3615         .indication =   rndis_wlan_indication,
3616 };
3617
3618 static const struct driver_info rndis_wlan_info = {
3619         .description =  "Wireless RNDIS device",
3620         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3621                                 FLAG_AVOID_UNLINK_URBS,
3622         .bind =         rndis_wlan_bind,
3623         .unbind =       rndis_wlan_unbind,
3624         .status =       rndis_status,
3625         .rx_fixup =     rndis_rx_fixup,
3626         .tx_fixup =     rndis_tx_fixup,
3627         .reset =        rndis_wlan_reset,
3628         .stop =         rndis_wlan_stop,
3629         .early_init =   unknown_early_init,
3630         .indication =   rndis_wlan_indication,
3631 };
3632
3633 /*-------------------------------------------------------------------------*/
3634
3635 static const struct usb_device_id products [] = {
3636 #define RNDIS_MASTER_INTERFACE \
3637         .bInterfaceClass        = USB_CLASS_COMM, \
3638         .bInterfaceSubClass     = 2 /* ACM */, \
3639         .bInterfaceProtocol     = 0x0ff
3640
3641 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3642  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3643  */
3644 {
3645         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3646                           | USB_DEVICE_ID_MATCH_DEVICE,
3647         .idVendor               = 0x0411,
3648         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3649         RNDIS_MASTER_INTERFACE,
3650         .driver_info            = (unsigned long) &bcm4320b_info,
3651 }, {
3652         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3653                           | USB_DEVICE_ID_MATCH_DEVICE,
3654         .idVendor               = 0x0baf,
3655         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3656         RNDIS_MASTER_INTERFACE,
3657         .driver_info            = (unsigned long) &bcm4320b_info,
3658 }, {
3659         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3660                           | USB_DEVICE_ID_MATCH_DEVICE,
3661         .idVendor               = 0x050d,
3662         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3663         RNDIS_MASTER_INTERFACE,
3664         .driver_info            = (unsigned long) &bcm4320b_info,
3665 }, {
3666         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3667                           | USB_DEVICE_ID_MATCH_DEVICE,
3668         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3669         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3670         RNDIS_MASTER_INTERFACE,
3671         .driver_info            = (unsigned long) &bcm4320b_info,
3672 }, {
3673         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3674                           | USB_DEVICE_ID_MATCH_DEVICE,
3675         .idVendor               = 0x13b1,
3676         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3677         RNDIS_MASTER_INTERFACE,
3678         .driver_info            = (unsigned long) &bcm4320b_info,
3679 }, {
3680         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3681                           | USB_DEVICE_ID_MATCH_DEVICE,
3682         .idVendor               = 0x13b1,
3683         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3684         RNDIS_MASTER_INTERFACE,
3685         .driver_info            = (unsigned long) &bcm4320b_info,
3686 }, {
3687         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3688                           | USB_DEVICE_ID_MATCH_DEVICE,
3689         .idVendor               = 0x0b05,
3690         .idProduct              = 0x1717,       /* Asus WL169gE */
3691         RNDIS_MASTER_INTERFACE,
3692         .driver_info            = (unsigned long) &bcm4320b_info,
3693 }, {
3694         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3695                           | USB_DEVICE_ID_MATCH_DEVICE,
3696         .idVendor               = 0x0a5c,
3697         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3698         RNDIS_MASTER_INTERFACE,
3699         .driver_info            = (unsigned long) &bcm4320b_info,
3700 }, {
3701         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3702                           | USB_DEVICE_ID_MATCH_DEVICE,
3703         .idVendor               = 0x1690,
3704         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3705         RNDIS_MASTER_INTERFACE,
3706         .driver_info            = (unsigned long) &bcm4320b_info,
3707 },
3708 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3709  * parameters available, hardware probably contain older firmware version with
3710  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3711  */
3712 {
3713         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3714                           | USB_DEVICE_ID_MATCH_DEVICE,
3715         .idVendor               = 0x13b1,
3716         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3717         RNDIS_MASTER_INTERFACE,
3718         .driver_info            = (unsigned long) &bcm4320a_info,
3719 }, {
3720         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3721                           | USB_DEVICE_ID_MATCH_DEVICE,
3722         .idVendor               = 0x0baf,
3723         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3724         RNDIS_MASTER_INTERFACE,
3725         .driver_info            = (unsigned long) &bcm4320a_info,
3726 }, {
3727         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3728                           | USB_DEVICE_ID_MATCH_DEVICE,
3729         .idVendor               = 0x0411,
3730         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3731         RNDIS_MASTER_INTERFACE,
3732         .driver_info            = (unsigned long) &bcm4320a_info,
3733 },
3734 /* Generic Wireless RNDIS devices that we don't have exact
3735  * idVendor/idProduct/chip yet.
3736  */
3737 {
3738         /* RNDIS is MSFT's un-official variant of CDC ACM */
3739         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3740         .driver_info = (unsigned long) &rndis_wlan_info,
3741 }, {
3742         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3743         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3744         .driver_info = (unsigned long) &rndis_wlan_info,
3745 },
3746         { },            // END
3747 };
3748 MODULE_DEVICE_TABLE(usb, products);
3749
3750 static struct usb_driver rndis_wlan_driver = {
3751         .name =         "rndis_wlan",
3752         .id_table =     products,
3753         .probe =        usbnet_probe,
3754         .disconnect =   usbnet_disconnect,
3755         .suspend =      usbnet_suspend,
3756         .resume =       usbnet_resume,
3757         .disable_hub_initiated_lpm = 1,
3758 };
3759
3760 module_usb_driver(rndis_wlan_driver);
3761
3762 MODULE_AUTHOR("Bjorge Dijkstra");
3763 MODULE_AUTHOR("Jussi Kivilinna");
3764 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3765 MODULE_LICENSE("GPL");
3766