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         int i, err, newlen;
1807         unsigned int count;
1808
1809         count = le32_to_cpu(pmkids->bssid_info_count);
1810
1811         if (count > max_pmkids)
1812                 count = max_pmkids;
1813
1814         /* update with new pmkid */
1815         for (i = 0; i < count; i++) {
1816                 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1817                                       pmksa->bssid))
1818                         continue;
1819
1820                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1821                                                                 WLAN_PMKID_LEN);
1822
1823                 return pmkids;
1824         }
1825
1826         /* out of space, return error */
1827         if (i == max_pmkids) {
1828                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1829                 err = -ENOSPC;
1830                 goto error;
1831         }
1832
1833         /* add new pmkid */
1834         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1835
1836         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1837         if (!pmkids) {
1838                 err = -ENOMEM;
1839                 goto error;
1840         }
1841
1842         pmkids->length = cpu_to_le32(newlen);
1843         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1844
1845         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1846         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1847
1848         return pmkids;
1849 error:
1850         kfree(pmkids);
1851         return ERR_PTR(err);
1852 }
1853
1854 /*
1855  * cfg80211 ops
1856  */
1857 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1858                                         struct net_device *dev,
1859                                         enum nl80211_iftype type, u32 *flags,
1860                                         struct vif_params *params)
1861 {
1862         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1863         struct usbnet *usbdev = priv->usbdev;
1864         int mode;
1865
1866         switch (type) {
1867         case NL80211_IFTYPE_ADHOC:
1868                 mode = NDIS_80211_INFRA_ADHOC;
1869                 break;
1870         case NL80211_IFTYPE_STATION:
1871                 mode = NDIS_80211_INFRA_INFRA;
1872                 break;
1873         default:
1874                 return -EINVAL;
1875         }
1876
1877         priv->wdev.iftype = type;
1878
1879         return set_infra_mode(usbdev, mode);
1880 }
1881
1882 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1883 {
1884         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1885         struct usbnet *usbdev = priv->usbdev;
1886         int err;
1887
1888         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1889                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1890                 if (err < 0)
1891                         return err;
1892         }
1893
1894         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1895                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1896                 if (err < 0)
1897                         return err;
1898         }
1899
1900         return 0;
1901 }
1902
1903 static int rndis_set_tx_power(struct wiphy *wiphy,
1904                               enum nl80211_tx_power_setting type,
1905                               int mbm)
1906 {
1907         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1908         struct usbnet *usbdev = priv->usbdev;
1909
1910         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1911                    __func__, type, mbm);
1912
1913         if (mbm < 0 || (mbm % 100))
1914                 return -ENOTSUPP;
1915
1916         /* Device doesn't support changing txpower after initialization, only
1917          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1918          * currently used.
1919          */
1920         if (type == NL80211_TX_POWER_AUTOMATIC ||
1921             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1922                 if (!priv->radio_on)
1923                         disassociate(usbdev, true); /* turn on radio */
1924
1925                 return 0;
1926         }
1927
1928         return -ENOTSUPP;
1929 }
1930
1931 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1932 {
1933         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1934         struct usbnet *usbdev = priv->usbdev;
1935
1936         *dbm = get_bcm4320_power_dbm(priv);
1937
1938         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1939
1940         return 0;
1941 }
1942
1943 #define SCAN_DELAY_JIFFIES (6 * HZ)
1944 static int rndis_scan(struct wiphy *wiphy,
1945                         struct cfg80211_scan_request *request)
1946 {
1947         struct net_device *dev = request->wdev->netdev;
1948         struct usbnet *usbdev = netdev_priv(dev);
1949         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1950         int ret;
1951         int delay = SCAN_DELAY_JIFFIES;
1952
1953         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1954
1955         /* Get current bssid list from device before new scan, as new scan
1956          * clears internal bssid list.
1957          */
1958         rndis_check_bssid_list(usbdev, NULL, NULL);
1959
1960         if (!request)
1961                 return -EINVAL;
1962
1963         if (priv->scan_request && priv->scan_request != request)
1964                 return -EBUSY;
1965
1966         priv->scan_request = request;
1967
1968         ret = rndis_start_bssid_list_scan(usbdev);
1969         if (ret == 0) {
1970                 if (priv->device_type == RNDIS_BCM4320A)
1971                         delay = HZ;
1972
1973                 /* Wait before retrieving scan results from device */
1974                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1975         }
1976
1977         return ret;
1978 }
1979
1980 static bool rndis_bss_info_update(struct usbnet *usbdev,
1981                                   struct ndis_80211_bssid_ex *bssid)
1982 {
1983         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1984         struct ieee80211_channel *channel;
1985         struct cfg80211_bss *bss;
1986         s32 signal;
1987         u64 timestamp;
1988         u16 capability;
1989         u16 beacon_interval;
1990         struct ndis_80211_fixed_ies *fixed;
1991         int ie_len, bssid_len;
1992         u8 *ie;
1993
1994         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1995                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1996
1997         /* parse bssid structure */
1998         bssid_len = le32_to_cpu(bssid->length);
1999
2000         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2001                         sizeof(struct ndis_80211_fixed_ies))
2002                 return NULL;
2003
2004         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2005
2006         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2007         ie_len = min(bssid_len - (int)sizeof(*bssid),
2008                                         (int)le32_to_cpu(bssid->ie_length));
2009         ie_len -= sizeof(struct ndis_80211_fixed_ies);
2010         if (ie_len < 0)
2011                 return NULL;
2012
2013         /* extract data for cfg80211_inform_bss */
2014         channel = ieee80211_get_channel(priv->wdev.wiphy,
2015                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2016         if (!channel)
2017                 return NULL;
2018
2019         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2020         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2021         capability = le16_to_cpu(fixed->capabilities);
2022         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2023
2024         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2025                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2026                 GFP_KERNEL);
2027         cfg80211_put_bss(bss);
2028
2029         return (bss != NULL);
2030 }
2031
2032 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2033                                         struct ndis_80211_bssid_ex *bssid,
2034                                         int *bssid_len, void *buf, int len)
2035 {
2036         void *buf_end, *bssid_end;
2037
2038         buf_end = (char *)buf + len;
2039         bssid_end = (char *)bssid + *bssid_len;
2040
2041         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2042                 *bssid_len = 0;
2043                 return NULL;
2044         } else {
2045                 bssid = (void *)((char *)bssid + *bssid_len);
2046                 *bssid_len = le32_to_cpu(bssid->length);
2047                 return bssid;
2048         }
2049 }
2050
2051 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2052                                   int bssid_len, void *buf, int len)
2053 {
2054         void *buf_end, *bssid_end;
2055
2056         if (!bssid || bssid_len <= 0 || bssid_len > len)
2057                 return false;
2058
2059         buf_end = (char *)buf + len;
2060         bssid_end = (char *)bssid + bssid_len;
2061
2062         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2063 }
2064
2065 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2066                                         bool *matched)
2067 {
2068         void *buf = NULL;
2069         struct ndis_80211_bssid_list_ex *bssid_list;
2070         struct ndis_80211_bssid_ex *bssid;
2071         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2072
2073         netdev_dbg(usbdev->net, "%s()\n", __func__);
2074
2075         len = CONTROL_BUFFER_SIZE;
2076 resize_buf:
2077         buf = kzalloc(len, GFP_KERNEL);
2078         if (!buf) {
2079                 ret = -ENOMEM;
2080                 goto out;
2081         }
2082
2083         /* BSSID-list might have got bigger last time we checked, keep
2084          * resizing until it won't get any bigger.
2085          */
2086         new_len = len;
2087         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2088                               buf, &new_len);
2089         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2090                 goto out;
2091
2092         if (new_len > len) {
2093                 len = new_len;
2094                 kfree(buf);
2095                 goto resize_buf;
2096         }
2097
2098         len = new_len;
2099
2100         bssid_list = buf;
2101         count = le32_to_cpu(bssid_list->num_items);
2102         real_count = 0;
2103         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2104
2105         bssid_len = 0;
2106         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2107
2108         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2109          * received 'num_items' and walking through full bssid buffer instead.
2110          */
2111         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2112                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2113                     matched) {
2114                         if (ether_addr_equal(bssid->mac, match_bssid))
2115                                 *matched = true;
2116                 }
2117
2118                 real_count++;
2119                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2120         }
2121
2122         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2123                                 " %d\n", __func__, count, real_count);
2124
2125 out:
2126         kfree(buf);
2127         return ret;
2128 }
2129
2130 static void rndis_get_scan_results(struct work_struct *work)
2131 {
2132         struct rndis_wlan_private *priv =
2133                 container_of(work, struct rndis_wlan_private, scan_work.work);
2134         struct usbnet *usbdev = priv->usbdev;
2135         int ret;
2136
2137         netdev_dbg(usbdev->net, "get_scan_results\n");
2138
2139         if (!priv->scan_request)
2140                 return;
2141
2142         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2143
2144         cfg80211_scan_done(priv->scan_request, ret < 0);
2145
2146         priv->scan_request = NULL;
2147 }
2148
2149 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2150                                         struct cfg80211_connect_params *sme)
2151 {
2152         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2153         struct usbnet *usbdev = priv->usbdev;
2154         struct ieee80211_channel *channel = sme->channel;
2155         struct ndis_80211_ssid ssid;
2156         int pairwise = RNDIS_WLAN_ALG_NONE;
2157         int groupwise = RNDIS_WLAN_ALG_NONE;
2158         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2159         int length, i, ret, chan = -1;
2160
2161         if (channel)
2162                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2163
2164         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2165         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2166                 pairwise |=
2167                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2168
2169         if (sme->crypto.n_ciphers_pairwise > 0 &&
2170                         pairwise == RNDIS_WLAN_ALG_NONE) {
2171                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2172                 return -ENOTSUPP;
2173         }
2174
2175         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2176                 keymgmt |=
2177                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2178
2179         if (sme->crypto.n_akm_suites > 0 &&
2180                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2181                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2182                 return -ENOTSUPP;
2183         }
2184
2185         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2186                    sme->ssid, sme->bssid, chan,
2187                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2188                    groupwise, pairwise, keymgmt);
2189
2190         if (is_associated(usbdev))
2191                 disassociate(usbdev, false);
2192
2193         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2194         if (ret < 0) {
2195                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2196                            ret);
2197                 goto err_turn_radio_on;
2198         }
2199
2200         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2201                                                                 keymgmt);
2202         if (ret < 0) {
2203                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2204                            ret);
2205                 goto err_turn_radio_on;
2206         }
2207
2208         set_priv_filter(usbdev);
2209
2210         ret = set_encr_mode(usbdev, pairwise, groupwise);
2211         if (ret < 0) {
2212                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2213                            ret);
2214                 goto err_turn_radio_on;
2215         }
2216
2217         if (channel) {
2218                 ret = set_channel(usbdev, chan);
2219                 if (ret < 0) {
2220                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2221                                    ret);
2222                         goto err_turn_radio_on;
2223                 }
2224         }
2225
2226         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2227                 priv->encr_tx_key_index = sme->key_idx;
2228                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2229                 if (ret < 0) {
2230                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2231                                    ret, sme->key_len, sme->key_idx);
2232                         goto err_turn_radio_on;
2233                 }
2234         }
2235
2236         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2237                                 !is_broadcast_ether_addr(sme->bssid)) {
2238                 ret = set_bssid(usbdev, sme->bssid);
2239                 if (ret < 0) {
2240                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2241                                    ret);
2242                         goto err_turn_radio_on;
2243                 }
2244         } else
2245                 clear_bssid(usbdev);
2246
2247         length = sme->ssid_len;
2248         if (length > NDIS_802_11_LENGTH_SSID)
2249                 length = NDIS_802_11_LENGTH_SSID;
2250
2251         memset(&ssid, 0, sizeof(ssid));
2252         ssid.length = cpu_to_le32(length);
2253         memcpy(ssid.essid, sme->ssid, length);
2254
2255         /* Pause and purge rx queue, so we don't pass packets before
2256          * 'media connect'-indication.
2257          */
2258         usbnet_pause_rx(usbdev);
2259         usbnet_purge_paused_rxq(usbdev);
2260
2261         ret = set_essid(usbdev, &ssid);
2262         if (ret < 0)
2263                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2264         return ret;
2265
2266 err_turn_radio_on:
2267         disassociate(usbdev, true);
2268
2269         return ret;
2270 }
2271
2272 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2273                                                                 u16 reason_code)
2274 {
2275         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2276         struct usbnet *usbdev = priv->usbdev;
2277
2278         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2279
2280         priv->connected = false;
2281         memset(priv->bssid, 0, ETH_ALEN);
2282
2283         return deauthenticate(usbdev);
2284 }
2285
2286 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2287                                         struct cfg80211_ibss_params *params)
2288 {
2289         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2290         struct usbnet *usbdev = priv->usbdev;
2291         struct ieee80211_channel *channel = params->channel;
2292         struct ndis_80211_ssid ssid;
2293         enum nl80211_auth_type auth_type;
2294         int ret, alg, length, chan = -1;
2295
2296         if (channel)
2297                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2298
2299         /* TODO: How to handle ad-hoc encryption?
2300          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2301          * pre-shared for encryption (open/shared/wpa), is key set before
2302          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2303          */
2304         if (params->privacy) {
2305                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2306                 alg = RNDIS_WLAN_ALG_WEP;
2307         } else {
2308                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2309                 alg = RNDIS_WLAN_ALG_NONE;
2310         }
2311
2312         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2313                    params->ssid, params->bssid, chan, params->privacy);
2314
2315         if (is_associated(usbdev))
2316                 disassociate(usbdev, false);
2317
2318         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2319         if (ret < 0) {
2320                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2321                            ret);
2322                 goto err_turn_radio_on;
2323         }
2324
2325         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2326         if (ret < 0) {
2327                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2328                            ret);
2329                 goto err_turn_radio_on;
2330         }
2331
2332         set_priv_filter(usbdev);
2333
2334         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2335         if (ret < 0) {
2336                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2337                            ret);
2338                 goto err_turn_radio_on;
2339         }
2340
2341         if (channel) {
2342                 ret = set_channel(usbdev, chan);
2343                 if (ret < 0) {
2344                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2345                                    ret);
2346                         goto err_turn_radio_on;
2347                 }
2348         }
2349
2350         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2351                                 !is_broadcast_ether_addr(params->bssid)) {
2352                 ret = set_bssid(usbdev, params->bssid);
2353                 if (ret < 0) {
2354                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2355                                    ret);
2356                         goto err_turn_radio_on;
2357                 }
2358         } else
2359                 clear_bssid(usbdev);
2360
2361         length = params->ssid_len;
2362         if (length > NDIS_802_11_LENGTH_SSID)
2363                 length = NDIS_802_11_LENGTH_SSID;
2364
2365         memset(&ssid, 0, sizeof(ssid));
2366         ssid.length = cpu_to_le32(length);
2367         memcpy(ssid.essid, params->ssid, length);
2368
2369         /* Don't need to pause rx queue for ad-hoc. */
2370         usbnet_purge_paused_rxq(usbdev);
2371         usbnet_resume_rx(usbdev);
2372
2373         ret = set_essid(usbdev, &ssid);
2374         if (ret < 0)
2375                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2376                            ret);
2377         return ret;
2378
2379 err_turn_radio_on:
2380         disassociate(usbdev, true);
2381
2382         return ret;
2383 }
2384
2385 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2386 {
2387         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2388         struct usbnet *usbdev = priv->usbdev;
2389
2390         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2391
2392         priv->connected = false;
2393         memset(priv->bssid, 0, ETH_ALEN);
2394
2395         return deauthenticate(usbdev);
2396 }
2397
2398 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2399                          u8 key_index, bool pairwise, const u8 *mac_addr,
2400                          struct key_params *params)
2401 {
2402         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2403         struct usbnet *usbdev = priv->usbdev;
2404         __le32 flags;
2405
2406         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2407                    __func__, key_index, mac_addr, params->cipher);
2408
2409         switch (params->cipher) {
2410         case WLAN_CIPHER_SUITE_WEP40:
2411         case WLAN_CIPHER_SUITE_WEP104:
2412                 return add_wep_key(usbdev, params->key, params->key_len,
2413                                                                 key_index);
2414         case WLAN_CIPHER_SUITE_TKIP:
2415         case WLAN_CIPHER_SUITE_CCMP:
2416                 flags = 0;
2417
2418                 if (params->seq && params->seq_len > 0)
2419                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2420                 if (mac_addr)
2421                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2422                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2423
2424                 return add_wpa_key(usbdev, params->key, params->key_len,
2425                                 key_index, mac_addr, params->seq,
2426                                 params->seq_len, params->cipher, flags);
2427         default:
2428                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2429                            __func__, params->cipher);
2430                 return -ENOTSUPP;
2431         }
2432 }
2433
2434 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2435                          u8 key_index, bool pairwise, const u8 *mac_addr)
2436 {
2437         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2438         struct usbnet *usbdev = priv->usbdev;
2439
2440         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2441
2442         return remove_key(usbdev, key_index, mac_addr);
2443 }
2444
2445 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2446                                  u8 key_index, bool unicast, bool multicast)
2447 {
2448         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2449         struct usbnet *usbdev = priv->usbdev;
2450         struct rndis_wlan_encr_key key;
2451
2452         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2453
2454         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2455                 return -ENOENT;
2456
2457         priv->encr_tx_key_index = key_index;
2458
2459         if (is_wpa_key(priv, key_index))
2460                 return 0;
2461
2462         key = priv->encr_keys[key_index];
2463
2464         return add_wep_key(usbdev, key.material, key.len, key_index);
2465 }
2466
2467 static void rndis_fill_station_info(struct usbnet *usbdev,
2468                                                 struct station_info *sinfo)
2469 {
2470         __le32 linkspeed, rssi;
2471         int ret, len;
2472
2473         memset(sinfo, 0, sizeof(*sinfo));
2474
2475         len = sizeof(linkspeed);
2476         ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2477         if (ret == 0) {
2478                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2479                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2480         }
2481
2482         len = sizeof(rssi);
2483         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2484                               &rssi, &len);
2485         if (ret == 0) {
2486                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2487                 sinfo->filled |= STATION_INFO_SIGNAL;
2488         }
2489 }
2490
2491 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2492                                         u8 *mac, struct station_info *sinfo)
2493 {
2494         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2495         struct usbnet *usbdev = priv->usbdev;
2496
2497         if (!ether_addr_equal(priv->bssid, mac))
2498                 return -ENOENT;
2499
2500         rndis_fill_station_info(usbdev, sinfo);
2501
2502         return 0;
2503 }
2504
2505 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2506                                int idx, u8 *mac, struct station_info *sinfo)
2507 {
2508         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2509         struct usbnet *usbdev = priv->usbdev;
2510
2511         if (idx != 0)
2512                 return -ENOENT;
2513
2514         memcpy(mac, priv->bssid, ETH_ALEN);
2515
2516         rndis_fill_station_info(usbdev, sinfo);
2517
2518         return 0;
2519 }
2520
2521 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2522                                 struct cfg80211_pmksa *pmksa)
2523 {
2524         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2525         struct usbnet *usbdev = priv->usbdev;
2526         struct ndis_80211_pmkid *pmkids;
2527         u32 *tmp = (u32 *)pmksa->pmkid;
2528
2529         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2530                         pmksa->bssid,
2531                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2532                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2533
2534         pmkids = get_device_pmkids(usbdev);
2535         if (IS_ERR(pmkids)) {
2536                 /* couldn't read PMKID cache from device */
2537                 return PTR_ERR(pmkids);
2538         }
2539
2540         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2541         if (IS_ERR(pmkids)) {
2542                 /* not found, list full, etc */
2543                 return PTR_ERR(pmkids);
2544         }
2545
2546         return set_device_pmkids(usbdev, pmkids);
2547 }
2548
2549 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2550                                 struct cfg80211_pmksa *pmksa)
2551 {
2552         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2553         struct usbnet *usbdev = priv->usbdev;
2554         struct ndis_80211_pmkid *pmkids;
2555         u32 *tmp = (u32 *)pmksa->pmkid;
2556
2557         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2558                         pmksa->bssid,
2559                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2560                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2561
2562         pmkids = get_device_pmkids(usbdev);
2563         if (IS_ERR(pmkids)) {
2564                 /* Couldn't read PMKID cache from device */
2565                 return PTR_ERR(pmkids);
2566         }
2567
2568         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2569         if (IS_ERR(pmkids)) {
2570                 /* not found, etc */
2571                 return PTR_ERR(pmkids);
2572         }
2573
2574         return set_device_pmkids(usbdev, pmkids);
2575 }
2576
2577 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2578 {
2579         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2580         struct usbnet *usbdev = priv->usbdev;
2581         struct ndis_80211_pmkid pmkid;
2582
2583         netdev_dbg(usbdev->net, "%s()\n", __func__);
2584
2585         memset(&pmkid, 0, sizeof(pmkid));
2586
2587         pmkid.length = cpu_to_le32(sizeof(pmkid));
2588         pmkid.bssid_info_count = cpu_to_le32(0);
2589
2590         return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2591                              &pmkid, sizeof(pmkid));
2592 }
2593
2594 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2595                                 bool enabled, int timeout)
2596 {
2597         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2598         struct usbnet *usbdev = priv->usbdev;
2599         int power_mode;
2600         __le32 mode;
2601         int ret;
2602
2603         if (priv->device_type != RNDIS_BCM4320B)
2604                 return -ENOTSUPP;
2605
2606         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2607                                 enabled ? "enabled" : "disabled",
2608                                 timeout);
2609
2610         if (enabled)
2611                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2612         else
2613                 power_mode = NDIS_80211_POWER_MODE_CAM;
2614
2615         if (power_mode == priv->power_mode)
2616                 return 0;
2617
2618         priv->power_mode = power_mode;
2619
2620         mode = cpu_to_le32(power_mode);
2621         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2622                             &mode, sizeof(mode));
2623
2624         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2625                                 __func__, ret);
2626
2627         return ret;
2628 }
2629
2630 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2631                                         struct net_device *dev,
2632                                         s32 rssi_thold, u32 rssi_hyst)
2633 {
2634         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2635
2636         priv->cqm_rssi_thold = rssi_thold;
2637         priv->cqm_rssi_hyst = rssi_hyst;
2638         priv->last_cqm_event_rssi = 0;
2639
2640         return 0;
2641 }
2642
2643 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2644                                            struct ndis_80211_assoc_info *info)
2645 {
2646         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2647         struct ieee80211_channel *channel;
2648         struct ndis_80211_ssid ssid;
2649         struct cfg80211_bss *bss;
2650         s32 signal;
2651         u64 timestamp;
2652         u16 capability;
2653         u32 beacon_period = 0;
2654         __le32 rssi;
2655         u8 ie_buf[34];
2656         int len, ret, ie_len;
2657
2658         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2659         len = sizeof(rssi);
2660         rssi = 0;
2661         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2662                               &rssi, &len);
2663         signal = level_to_qual(le32_to_cpu(rssi));
2664
2665         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2666                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2667                    level_to_qual(le32_to_cpu(rssi)));
2668
2669         /* Get AP capabilities */
2670         if (info) {
2671                 capability = le16_to_cpu(info->resp_ie.capa);
2672         } else {
2673                 /* Set atleast ESS/IBSS capability */
2674                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2675                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2676         }
2677
2678         /* Get channel and beacon interval */
2679         channel = get_current_channel(usbdev, &beacon_period);
2680         if (!channel) {
2681                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2682                                         __func__);
2683                 return;
2684         }
2685
2686         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2687         len = sizeof(ssid);
2688         memset(&ssid, 0, sizeof(ssid));
2689         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2690                               &ssid, &len);
2691         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2692                                 "'%.32s'\n", __func__, ret,
2693                                 le32_to_cpu(ssid.length), ssid.essid);
2694
2695         if (le32_to_cpu(ssid.length) > 32)
2696                 ssid.length = cpu_to_le32(32);
2697
2698         ie_buf[0] = WLAN_EID_SSID;
2699         ie_buf[1] = le32_to_cpu(ssid.length);
2700         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2701
2702         ie_len = le32_to_cpu(ssid.length) + 2;
2703
2704         /* no tsf */
2705         timestamp = 0;
2706
2707         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2708                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2709                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2710                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2711                 ssid.essid, signal);
2712
2713         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2714                 timestamp, capability, beacon_period, ie_buf, ie_len,
2715                 signal, GFP_KERNEL);
2716         cfg80211_put_bss(bss);
2717 }
2718
2719 /*
2720  * workers, indication handlers, device poller
2721  */
2722 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2723 {
2724         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2725         struct ndis_80211_assoc_info *info = NULL;
2726         u8 bssid[ETH_ALEN];
2727         unsigned int resp_ie_len, req_ie_len;
2728         unsigned int offset;
2729         u8 *req_ie, *resp_ie;
2730         int ret;
2731         bool roamed = false;
2732         bool match_bss;
2733
2734         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2735                 /* received media connect indication while connected, either
2736                  * device reassociated with same AP or roamed to new. */
2737                 roamed = true;
2738         }
2739
2740         req_ie_len = 0;
2741         resp_ie_len = 0;
2742         req_ie = NULL;
2743         resp_ie = NULL;
2744
2745         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2746                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2747                 if (!info) {
2748                         /* No memory? Try resume work later */
2749                         set_bit(WORK_LINK_UP, &priv->work_pending);
2750                         queue_work(priv->workqueue, &priv->work);
2751                         return;
2752                 }
2753
2754                 /* Get association info IEs from device. */
2755                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2756                 if (!ret) {
2757                         req_ie_len = le32_to_cpu(info->req_ie_length);
2758                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2759                                 req_ie_len = CONTROL_BUFFER_SIZE;
2760                         if (req_ie_len != 0) {
2761                                 offset = le32_to_cpu(info->offset_req_ies);
2762
2763                                 if (offset > CONTROL_BUFFER_SIZE)
2764                                         offset = CONTROL_BUFFER_SIZE;
2765
2766                                 req_ie = (u8 *)info + offset;
2767
2768                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2769                                         req_ie_len =
2770                                                 CONTROL_BUFFER_SIZE - offset;
2771                         }
2772
2773                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2774                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2775                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2776                         if (resp_ie_len != 0) {
2777                                 offset = le32_to_cpu(info->offset_resp_ies);
2778
2779                                 if (offset > CONTROL_BUFFER_SIZE)
2780                                         offset = CONTROL_BUFFER_SIZE;
2781
2782                                 resp_ie = (u8 *)info + offset;
2783
2784                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2785                                         resp_ie_len =
2786                                                 CONTROL_BUFFER_SIZE - offset;
2787                         }
2788                 } else {
2789                         /* Since rndis_wlan_craft_connected_bss() might use info
2790                          * later and expects info to contain valid data if
2791                          * non-null, free info and set NULL here.
2792                          */
2793                         kfree(info);
2794                         info = NULL;
2795                 }
2796         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2797                 return;
2798
2799         ret = get_bssid(usbdev, bssid);
2800         if (ret < 0)
2801                 memset(bssid, 0, sizeof(bssid));
2802
2803         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2804                    bssid, roamed ? " roamed" : "");
2805
2806         /* Internal bss list in device should contain at least the currently
2807          * connected bss and we can get it to cfg80211 with
2808          * rndis_check_bssid_list().
2809          *
2810          * NDIS spec says: "If the device is associated, but the associated
2811          *  BSSID is not in its BSSID scan list, then the driver must add an
2812          *  entry for the BSSID at the end of the data that it returns in
2813          *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2814          *
2815          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2816          */
2817         match_bss = false;
2818         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2819
2820         if (!is_zero_ether_addr(bssid) && !match_bss) {
2821                 /* Couldn't get bss from device, we need to manually craft bss
2822                  * for cfg80211.
2823                  */
2824                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2825         }
2826
2827         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2828                 if (!roamed)
2829                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2830                                                 req_ie_len, resp_ie,
2831                                                 resp_ie_len, 0, GFP_KERNEL);
2832                 else
2833                         cfg80211_roamed(usbdev->net,
2834                                         get_current_channel(usbdev, NULL),
2835                                         bssid, req_ie, req_ie_len,
2836                                         resp_ie, resp_ie_len, GFP_KERNEL);
2837         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2838                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2839
2840         if (info != NULL)
2841                 kfree(info);
2842
2843         priv->connected = true;
2844         memcpy(priv->bssid, bssid, ETH_ALEN);
2845
2846         usbnet_resume_rx(usbdev);
2847         netif_carrier_on(usbdev->net);
2848 }
2849
2850 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2851 {
2852         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2853
2854         if (priv->connected) {
2855                 priv->connected = false;
2856                 memset(priv->bssid, 0, ETH_ALEN);
2857
2858                 deauthenticate(usbdev);
2859
2860                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2861         }
2862
2863         netif_carrier_off(usbdev->net);
2864 }
2865
2866 static void rndis_wlan_worker(struct work_struct *work)
2867 {
2868         struct rndis_wlan_private *priv =
2869                 container_of(work, struct rndis_wlan_private, work);
2870         struct usbnet *usbdev = priv->usbdev;
2871
2872         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2873                 rndis_wlan_do_link_up_work(usbdev);
2874
2875         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2876                 rndis_wlan_do_link_down_work(usbdev);
2877
2878         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2879                 set_multicast_list(usbdev);
2880 }
2881
2882 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2883 {
2884         struct usbnet *usbdev = netdev_priv(dev);
2885         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2886
2887         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2888                 return;
2889
2890         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2891         queue_work(priv->workqueue, &priv->work);
2892 }
2893
2894 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2895                                 struct ndis_80211_status_indication *indication,
2896                                 int len)
2897 {
2898         u8 *buf;
2899         const char *type;
2900         int flags, buflen, key_id;
2901         bool pairwise_error, group_error;
2902         struct ndis_80211_auth_request *auth_req;
2903         enum nl80211_key_type key_type;
2904
2905         /* must have at least one array entry */
2906         if (len < offsetof(struct ndis_80211_status_indication, u) +
2907                                 sizeof(struct ndis_80211_auth_request)) {
2908                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2909                             len);
2910                 return;
2911         }
2912
2913         buf = (void *)&indication->u.auth_request[0];
2914         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2915
2916         while (buflen >= sizeof(*auth_req)) {
2917                 auth_req = (void *)buf;
2918                 type = "unknown";
2919                 flags = le32_to_cpu(auth_req->flags);
2920                 pairwise_error = false;
2921                 group_error = false;
2922
2923                 if (flags & 0x1)
2924                         type = "reauth request";
2925                 if (flags & 0x2)
2926                         type = "key update request";
2927                 if (flags & 0x6) {
2928                         pairwise_error = true;
2929                         type = "pairwise_error";
2930                 }
2931                 if (flags & 0xe) {
2932                         group_error = true;
2933                         type = "group_error";
2934                 }
2935
2936                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2937                             type, le32_to_cpu(auth_req->flags));
2938
2939                 if (pairwise_error) {
2940                         key_type = NL80211_KEYTYPE_PAIRWISE;
2941                         key_id = -1;
2942
2943                         cfg80211_michael_mic_failure(usbdev->net,
2944                                                         auth_req->bssid,
2945                                                         key_type, key_id, NULL,
2946                                                         GFP_KERNEL);
2947                 }
2948
2949                 if (group_error) {
2950                         key_type = NL80211_KEYTYPE_GROUP;
2951                         key_id = -1;
2952
2953                         cfg80211_michael_mic_failure(usbdev->net,
2954                                                         auth_req->bssid,
2955                                                         key_type, key_id, NULL,
2956                                                         GFP_KERNEL);
2957                 }
2958
2959                 buflen -= le32_to_cpu(auth_req->length);
2960                 buf += le32_to_cpu(auth_req->length);
2961         }
2962 }
2963
2964 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2965                                 struct ndis_80211_status_indication *indication,
2966                                 int len)
2967 {
2968         struct ndis_80211_pmkid_cand_list *cand_list;
2969         int list_len, expected_len, i;
2970
2971         if (len < offsetof(struct ndis_80211_status_indication, u) +
2972                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2973                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2974                             len);
2975                 return;
2976         }
2977
2978         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2979                         sizeof(struct ndis_80211_pmkid_candidate);
2980         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2981                         offsetof(struct ndis_80211_status_indication, u);
2982
2983         if (len < expected_len) {
2984                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2985                             len, expected_len);
2986                 return;
2987         }
2988
2989         cand_list = &indication->u.cand_list;
2990
2991         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2992                     le32_to_cpu(cand_list->version),
2993                     le32_to_cpu(cand_list->num_candidates));
2994
2995         if (le32_to_cpu(cand_list->version) != 1)
2996                 return;
2997
2998         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2999                 struct ndis_80211_pmkid_candidate *cand =
3000                                                 &cand_list->candidate_list[i];
3001                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3002
3003                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3004                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3005
3006                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3007                                                 preauth, GFP_ATOMIC);
3008         }
3009 }
3010
3011 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3012                         struct rndis_indicate *msg, int buflen)
3013 {
3014         struct ndis_80211_status_indication *indication;
3015         unsigned int len, offset;
3016
3017         offset = offsetof(struct rndis_indicate, status) +
3018                         le32_to_cpu(msg->offset);
3019         len = le32_to_cpu(msg->length);
3020
3021         if (len < 8) {
3022                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3023                             len);
3024                 return;
3025         }
3026
3027         if (len > buflen || offset > buflen || offset + len > buflen) {
3028                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3029                             offset + len, buflen);
3030                 return;
3031         }
3032
3033         indication = (void *)((u8 *)msg + offset);
3034
3035         switch (le32_to_cpu(indication->status_type)) {
3036         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3037                 netdev_info(usbdev->net, "radio state indication: %i\n",
3038                             le32_to_cpu(indication->u.radio_status));
3039                 return;
3040
3041         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3042                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3043                             le32_to_cpu(indication->u.media_stream_mode));
3044                 return;
3045
3046         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3047                 rndis_wlan_auth_indication(usbdev, indication, len);
3048                 return;
3049
3050         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3051                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3052                 return;
3053
3054         default:
3055                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3056                             le32_to_cpu(indication->status_type));
3057         }
3058 }
3059
3060 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3061 {
3062         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3063         struct rndis_indicate *msg = ind;
3064
3065         switch (le32_to_cpu(msg->status)) {
3066         case RNDIS_STATUS_MEDIA_CONNECT:
3067                 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3068                         /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3069                          * "media connect" indications which confuses driver
3070                          * and userspace to think that device is
3071                          * roaming/reassociating when it isn't.
3072                          */
3073                         netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3074                         return;
3075                 }
3076
3077                 usbnet_pause_rx(usbdev);
3078
3079                 netdev_info(usbdev->net, "media connect\n");
3080
3081                 /* queue work to avoid recursive calls into rndis_command */
3082                 set_bit(WORK_LINK_UP, &priv->work_pending);
3083                 queue_work(priv->workqueue, &priv->work);
3084                 break;
3085
3086         case RNDIS_STATUS_MEDIA_DISCONNECT:
3087                 netdev_info(usbdev->net, "media disconnect\n");
3088
3089                 /* queue work to avoid recursive calls into rndis_command */
3090                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3091                 queue_work(priv->workqueue, &priv->work);
3092                 break;
3093
3094         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3095                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3096                 break;
3097
3098         default:
3099                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3100                             le32_to_cpu(msg->status));
3101                 break;
3102         }
3103 }
3104
3105 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3106 {
3107         struct {
3108                 __le32  num_items;
3109                 __le32  items[8];
3110         } networks_supported;
3111         struct ndis_80211_capability *caps;
3112         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3113         int len, retval, i, n;
3114         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3115
3116         /* determine supported modes */
3117         len = sizeof(networks_supported);
3118         retval = rndis_query_oid(usbdev,
3119                                  RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3120                                  &networks_supported, &len);
3121         if (retval >= 0) {
3122                 n = le32_to_cpu(networks_supported.num_items);
3123                 if (n > 8)
3124                         n = 8;
3125                 for (i = 0; i < n; i++) {
3126                         switch (le32_to_cpu(networks_supported.items[i])) {
3127                         case NDIS_80211_TYPE_FREQ_HOP:
3128                         case NDIS_80211_TYPE_DIRECT_SEQ:
3129                                 priv->caps |= CAP_MODE_80211B;
3130                                 break;
3131                         case NDIS_80211_TYPE_OFDM_A:
3132                                 priv->caps |= CAP_MODE_80211A;
3133                                 break;
3134                         case NDIS_80211_TYPE_OFDM_G:
3135                                 priv->caps |= CAP_MODE_80211G;
3136                                 break;
3137                         }
3138                 }
3139         }
3140
3141         /* get device 802.11 capabilities, number of PMKIDs */
3142         caps = (struct ndis_80211_capability *)caps_buf;
3143         len = sizeof(caps_buf);
3144         retval = rndis_query_oid(usbdev,
3145                                  RNDIS_OID_802_11_CAPABILITY,
3146                                  caps, &len);
3147         if (retval >= 0) {
3148                 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3149                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3150                                 le32_to_cpu(caps->length),
3151                                 le32_to_cpu(caps->version),
3152                                 le32_to_cpu(caps->num_pmkids),
3153                                 le32_to_cpu(caps->num_auth_encr_pair));
3154                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3155         } else
3156                 wiphy->max_num_pmkids = 0;
3157
3158         return retval;
3159 }
3160
3161 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3162 {
3163         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3164         enum nl80211_cqm_rssi_threshold_event event;
3165         int thold, hyst, last_event;
3166
3167         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3168                 return;
3169         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3170                 return;
3171
3172         last_event = priv->last_cqm_event_rssi;
3173         thold = priv->cqm_rssi_thold;
3174         hyst = priv->cqm_rssi_hyst;
3175
3176         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3177                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3178         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3179                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3180         else
3181                 return;
3182
3183         priv->last_cqm_event_rssi = rssi;
3184         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3185 }
3186
3187 #define DEVICE_POLLER_JIFFIES (HZ)
3188 static void rndis_device_poller(struct work_struct *work)
3189 {
3190         struct rndis_wlan_private *priv =
3191                 container_of(work, struct rndis_wlan_private,
3192                                                         dev_poller_work.work);
3193         struct usbnet *usbdev = priv->usbdev;
3194         __le32 rssi, tmp;
3195         int len, ret, j;
3196         int update_jiffies = DEVICE_POLLER_JIFFIES;
3197         void *buf;
3198
3199         /* Only check/do workaround when connected. Calling is_associated()
3200          * also polls device with rndis_command() and catches for media link
3201          * indications.
3202          */
3203         if (!is_associated(usbdev)) {
3204                 /* Workaround bad scanning in BCM4320a devices with active
3205                  * background scanning when not associated.
3206                  */
3207                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3208                     !priv->scan_request) {
3209                         /* Get previous scan results */
3210                         rndis_check_bssid_list(usbdev, NULL, NULL);
3211
3212                         /* Initiate new scan */
3213                         rndis_start_bssid_list_scan(usbdev);
3214                 }
3215
3216                 goto end;
3217         }
3218
3219         len = sizeof(rssi);
3220         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3221                               &rssi, &len);
3222         if (ret == 0) {
3223                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3224                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3225         }
3226
3227         netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3228                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3229
3230         /* Workaround transfer stalls on poor quality links.
3231          * TODO: find right way to fix these stalls (as stalls do not happen
3232          * with ndiswrapper/windows driver). */
3233         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3234                 /* Decrease stats worker interval to catch stalls.
3235                  * faster. Faster than 400-500ms causes packet loss,
3236                  * Slower doesn't catch stalls fast enough.
3237                  */
3238                 j = msecs_to_jiffies(priv->param_workaround_interval);
3239                 if (j > DEVICE_POLLER_JIFFIES)
3240                         j = DEVICE_POLLER_JIFFIES;
3241                 else if (j <= 0)
3242                         j = 1;
3243                 update_jiffies = j;
3244
3245                 /* Send scan OID. Use of both OIDs is required to get device
3246                  * working.
3247                  */
3248                 tmp = cpu_to_le32(1);
3249                 rndis_set_oid(usbdev,
3250                               RNDIS_OID_802_11_BSSID_LIST_SCAN,
3251                               &tmp, sizeof(tmp));
3252
3253                 len = CONTROL_BUFFER_SIZE;
3254                 buf = kmalloc(len, GFP_KERNEL);
3255                 if (!buf)
3256                         goto end;
3257
3258                 rndis_query_oid(usbdev,
3259                                 RNDIS_OID_802_11_BSSID_LIST,
3260                                 buf, &len);
3261                 kfree(buf);
3262         }
3263
3264 end:
3265         if (update_jiffies >= HZ)
3266                 update_jiffies = round_jiffies_relative(update_jiffies);
3267         else {
3268                 j = round_jiffies_relative(update_jiffies);
3269                 if (abs(j - update_jiffies) <= 10)
3270                         update_jiffies = j;
3271         }
3272
3273         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3274                                                                 update_jiffies);
3275 }
3276
3277 /*
3278  * driver/device initialization
3279  */
3280 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3281 {
3282         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3283
3284         priv->device_type = device_type;
3285
3286         priv->param_country[0] = modparam_country[0];
3287         priv->param_country[1] = modparam_country[1];
3288         priv->param_country[2] = 0;
3289         priv->param_frameburst   = modparam_frameburst;
3290         priv->param_afterburner  = modparam_afterburner;
3291         priv->param_power_save   = modparam_power_save;
3292         priv->param_power_output = modparam_power_output;
3293         priv->param_roamtrigger  = modparam_roamtrigger;
3294         priv->param_roamdelta    = modparam_roamdelta;
3295
3296         priv->param_country[0] = toupper(priv->param_country[0]);
3297         priv->param_country[1] = toupper(priv->param_country[1]);
3298         /* doesn't support EU as country code, use FI instead */
3299         if (!strcmp(priv->param_country, "EU"))
3300                 strcpy(priv->param_country, "FI");
3301
3302         if (priv->param_power_save < 0)
3303                 priv->param_power_save = 0;
3304         else if (priv->param_power_save > 2)
3305                 priv->param_power_save = 2;
3306
3307         if (priv->param_power_output < 0)
3308                 priv->param_power_output = 0;
3309         else if (priv->param_power_output > 3)
3310                 priv->param_power_output = 3;
3311
3312         if (priv->param_roamtrigger < -80)
3313                 priv->param_roamtrigger = -80;
3314         else if (priv->param_roamtrigger > -60)
3315                 priv->param_roamtrigger = -60;
3316
3317         if (priv->param_roamdelta < 0)
3318                 priv->param_roamdelta = 0;
3319         else if (priv->param_roamdelta > 2)
3320                 priv->param_roamdelta = 2;
3321
3322         if (modparam_workaround_interval < 0)
3323                 priv->param_workaround_interval = 500;
3324         else
3325                 priv->param_workaround_interval = modparam_workaround_interval;
3326 }
3327
3328 static int unknown_early_init(struct usbnet *usbdev)
3329 {
3330         /* copy module parameters for unknown so that iwconfig reports txpower
3331          * and workaround parameter is copied to private structure correctly.
3332          */
3333         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3334
3335         /* This is unknown device, so do not try set configuration parameters.
3336          */
3337
3338         return 0;
3339 }
3340
3341 static int bcm4320a_early_init(struct usbnet *usbdev)
3342 {
3343         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3344          * and workaround parameter is copied to private structure correctly.
3345          */
3346         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3347
3348         /* bcm4320a doesn't handle configuration parameters well. Try
3349          * set any and you get partially zeroed mac and broken device.
3350          */
3351
3352         return 0;
3353 }
3354
3355 static int bcm4320b_early_init(struct usbnet *usbdev)
3356 {
3357         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3358         char buf[8];
3359
3360         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3361
3362         /* Early initialization settings, setting these won't have effect
3363          * if called after generic_rndis_bind().
3364          */
3365
3366         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3367         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3368                                         priv->param_frameburst ? "1" : "0");
3369         rndis_set_config_parameter_str(usbdev, "Afterburner",
3370                                         priv->param_afterburner ? "1" : "0");
3371         sprintf(buf, "%d", priv->param_power_save);
3372         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3373         sprintf(buf, "%d", priv->param_power_output);
3374         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3375         sprintf(buf, "%d", priv->param_roamtrigger);
3376         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3377         sprintf(buf, "%d", priv->param_roamdelta);
3378         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3379
3380         return 0;
3381 }
3382
3383 /* same as rndis_netdev_ops but with local multicast handler */
3384 static const struct net_device_ops rndis_wlan_netdev_ops = {
3385         .ndo_open               = usbnet_open,
3386         .ndo_stop               = usbnet_stop,
3387         .ndo_start_xmit         = usbnet_start_xmit,
3388         .ndo_tx_timeout         = usbnet_tx_timeout,
3389         .ndo_set_mac_address    = eth_mac_addr,
3390         .ndo_validate_addr      = eth_validate_addr,
3391         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3392 };
3393
3394 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3395 {
3396         struct wiphy *wiphy;
3397         struct rndis_wlan_private *priv;
3398         int retval, len;
3399         __le32 tmp;
3400
3401         /* allocate wiphy and rndis private data
3402          * NOTE: We only support a single virtual interface, so wiphy
3403          * and wireless_dev are somewhat synonymous for this device.
3404          */
3405         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3406         if (!wiphy)
3407                 return -ENOMEM;
3408
3409         priv = wiphy_priv(wiphy);
3410         usbdev->net->ieee80211_ptr = &priv->wdev;
3411         priv->wdev.wiphy = wiphy;
3412         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3413
3414         /* These have to be initialized before calling generic_rndis_bind().
3415          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3416          */
3417         usbdev->driver_priv = priv;
3418         priv->usbdev = usbdev;
3419
3420         mutex_init(&priv->command_lock);
3421
3422         /* because rndis_command() sleeps we need to use workqueue */
3423         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3424         INIT_WORK(&priv->work, rndis_wlan_worker);
3425         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3426         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3427
3428         /* try bind rndis_host */
3429         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3430         if (retval < 0)
3431                 goto fail;
3432
3433         /* generic_rndis_bind set packet filter to multicast_all+
3434          * promisc mode which doesn't work well for our devices (device
3435          * picks up rssi to closest station instead of to access point).
3436          *
3437          * rndis_host wants to avoid all OID as much as possible
3438          * so do promisc/multicast handling in rndis_wlan.
3439          */
3440         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3441
3442         tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3443         retval = rndis_set_oid(usbdev,
3444                                RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3445                                &tmp, sizeof(tmp));
3446
3447         len = sizeof(tmp);
3448         retval = rndis_query_oid(usbdev,
3449                                  RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3450                                  &tmp, &len);
3451         priv->multicast_size = le32_to_cpu(tmp);
3452         if (retval < 0 || priv->multicast_size < 0)
3453                 priv->multicast_size = 0;
3454         if (priv->multicast_size > 0)
3455                 usbdev->net->flags |= IFF_MULTICAST;
3456         else
3457                 usbdev->net->flags &= ~IFF_MULTICAST;
3458
3459         /* fill-out wiphy structure and register w/ cfg80211 */
3460         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3461         wiphy->privid = rndis_wiphy_privid;
3462         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3463                                         | BIT(NL80211_IFTYPE_ADHOC);
3464         wiphy->max_scan_ssids = 1;
3465
3466         /* TODO: fill-out band/encr information based on priv->caps */
3467         rndis_wlan_get_caps(usbdev, wiphy);
3468
3469         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3470         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3471         priv->band.channels = priv->channels;
3472         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3473         priv->band.bitrates = priv->rates;
3474         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3475         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3476         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3477
3478         memcpy(priv->cipher_suites, rndis_cipher_suites,
3479                                                 sizeof(rndis_cipher_suites));
3480         wiphy->cipher_suites = priv->cipher_suites;
3481         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3482
3483         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3484
3485         if (wiphy_register(wiphy)) {
3486                 retval = -ENODEV;
3487                 goto fail;
3488         }
3489
3490         set_default_iw_params(usbdev);
3491
3492         priv->power_mode = -1;
3493
3494         /* set default rts/frag */
3495         rndis_set_wiphy_params(wiphy,
3496                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3497
3498         /* turn radio off on init */
3499         priv->radio_on = false;
3500         disassociate(usbdev, false);
3501         netif_carrier_off(usbdev->net);
3502
3503         return 0;
3504
3505 fail:
3506         cancel_delayed_work_sync(&priv->dev_poller_work);
3507         cancel_delayed_work_sync(&priv->scan_work);
3508         cancel_work_sync(&priv->work);
3509         flush_workqueue(priv->workqueue);
3510         destroy_workqueue(priv->workqueue);
3511
3512         wiphy_free(wiphy);
3513         return retval;
3514 }
3515
3516 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3517 {
3518         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3519
3520         /* turn radio off */
3521         disassociate(usbdev, false);
3522
3523         cancel_delayed_work_sync(&priv->dev_poller_work);
3524         cancel_delayed_work_sync(&priv->scan_work);
3525         cancel_work_sync(&priv->work);
3526         flush_workqueue(priv->workqueue);
3527         destroy_workqueue(priv->workqueue);
3528
3529         rndis_unbind(usbdev, intf);
3530
3531         wiphy_unregister(priv->wdev.wiphy);
3532         wiphy_free(priv->wdev.wiphy);
3533 }
3534
3535 static int rndis_wlan_reset(struct usbnet *usbdev)
3536 {
3537         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3538         int retval;
3539
3540         netdev_dbg(usbdev->net, "%s()\n", __func__);
3541
3542         retval = rndis_reset(usbdev);
3543         if (retval)
3544                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3545
3546         /* rndis_reset cleared multicast list, so restore here.
3547            (set_multicast_list() also turns on current packet filter) */
3548         set_multicast_list(usbdev);
3549
3550         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3551                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3552
3553         return deauthenticate(usbdev);
3554 }
3555
3556 static int rndis_wlan_stop(struct usbnet *usbdev)
3557 {
3558         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3559         int retval;
3560         __le32 filter;
3561
3562         netdev_dbg(usbdev->net, "%s()\n", __func__);
3563
3564         retval = disassociate(usbdev, false);
3565
3566         priv->work_pending = 0;
3567         cancel_delayed_work_sync(&priv->dev_poller_work);
3568         cancel_delayed_work_sync(&priv->scan_work);
3569         cancel_work_sync(&priv->work);
3570         flush_workqueue(priv->workqueue);
3571
3572         if (priv->scan_request) {
3573                 cfg80211_scan_done(priv->scan_request, true);
3574                 priv->scan_request = NULL;
3575         }
3576
3577         /* Set current packet filter zero to block receiving data packets from
3578            device. */
3579         filter = 0;
3580         rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3581                                                                 sizeof(filter));
3582
3583         return retval;
3584 }
3585
3586 static const struct driver_info bcm4320b_info = {
3587         .description =  "Wireless RNDIS device, BCM4320b based",
3588         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3589                                 FLAG_AVOID_UNLINK_URBS,
3590         .bind =         rndis_wlan_bind,
3591         .unbind =       rndis_wlan_unbind,
3592         .status =       rndis_status,
3593         .rx_fixup =     rndis_rx_fixup,
3594         .tx_fixup =     rndis_tx_fixup,
3595         .reset =        rndis_wlan_reset,
3596         .stop =         rndis_wlan_stop,
3597         .early_init =   bcm4320b_early_init,
3598         .indication =   rndis_wlan_indication,
3599 };
3600
3601 static const struct driver_info bcm4320a_info = {
3602         .description =  "Wireless RNDIS device, BCM4320a based",
3603         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3604                                 FLAG_AVOID_UNLINK_URBS,
3605         .bind =         rndis_wlan_bind,
3606         .unbind =       rndis_wlan_unbind,
3607         .status =       rndis_status,
3608         .rx_fixup =     rndis_rx_fixup,
3609         .tx_fixup =     rndis_tx_fixup,
3610         .reset =        rndis_wlan_reset,
3611         .stop =         rndis_wlan_stop,
3612         .early_init =   bcm4320a_early_init,
3613         .indication =   rndis_wlan_indication,
3614 };
3615
3616 static const struct driver_info rndis_wlan_info = {
3617         .description =  "Wireless RNDIS device",
3618         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3619                                 FLAG_AVOID_UNLINK_URBS,
3620         .bind =         rndis_wlan_bind,
3621         .unbind =       rndis_wlan_unbind,
3622         .status =       rndis_status,
3623         .rx_fixup =     rndis_rx_fixup,
3624         .tx_fixup =     rndis_tx_fixup,
3625         .reset =        rndis_wlan_reset,
3626         .stop =         rndis_wlan_stop,
3627         .early_init =   unknown_early_init,
3628         .indication =   rndis_wlan_indication,
3629 };
3630
3631 /*-------------------------------------------------------------------------*/
3632
3633 static const struct usb_device_id products [] = {
3634 #define RNDIS_MASTER_INTERFACE \
3635         .bInterfaceClass        = USB_CLASS_COMM, \
3636         .bInterfaceSubClass     = 2 /* ACM */, \
3637         .bInterfaceProtocol     = 0x0ff
3638
3639 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3640  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3641  */
3642 {
3643         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3644                           | USB_DEVICE_ID_MATCH_DEVICE,
3645         .idVendor               = 0x0411,
3646         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3647         RNDIS_MASTER_INTERFACE,
3648         .driver_info            = (unsigned long) &bcm4320b_info,
3649 }, {
3650         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3651                           | USB_DEVICE_ID_MATCH_DEVICE,
3652         .idVendor               = 0x0baf,
3653         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3654         RNDIS_MASTER_INTERFACE,
3655         .driver_info            = (unsigned long) &bcm4320b_info,
3656 }, {
3657         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3658                           | USB_DEVICE_ID_MATCH_DEVICE,
3659         .idVendor               = 0x050d,
3660         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3661         RNDIS_MASTER_INTERFACE,
3662         .driver_info            = (unsigned long) &bcm4320b_info,
3663 }, {
3664         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3665                           | USB_DEVICE_ID_MATCH_DEVICE,
3666         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3667         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3668         RNDIS_MASTER_INTERFACE,
3669         .driver_info            = (unsigned long) &bcm4320b_info,
3670 }, {
3671         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3672                           | USB_DEVICE_ID_MATCH_DEVICE,
3673         .idVendor               = 0x13b1,
3674         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3675         RNDIS_MASTER_INTERFACE,
3676         .driver_info            = (unsigned long) &bcm4320b_info,
3677 }, {
3678         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3679                           | USB_DEVICE_ID_MATCH_DEVICE,
3680         .idVendor               = 0x13b1,
3681         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3682         RNDIS_MASTER_INTERFACE,
3683         .driver_info            = (unsigned long) &bcm4320b_info,
3684 }, {
3685         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3686                           | USB_DEVICE_ID_MATCH_DEVICE,
3687         .idVendor               = 0x0b05,
3688         .idProduct              = 0x1717,       /* Asus WL169gE */
3689         RNDIS_MASTER_INTERFACE,
3690         .driver_info            = (unsigned long) &bcm4320b_info,
3691 }, {
3692         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3693                           | USB_DEVICE_ID_MATCH_DEVICE,
3694         .idVendor               = 0x0a5c,
3695         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3696         RNDIS_MASTER_INTERFACE,
3697         .driver_info            = (unsigned long) &bcm4320b_info,
3698 }, {
3699         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3700                           | USB_DEVICE_ID_MATCH_DEVICE,
3701         .idVendor               = 0x1690,
3702         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3703         RNDIS_MASTER_INTERFACE,
3704         .driver_info            = (unsigned long) &bcm4320b_info,
3705 },
3706 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3707  * parameters available, hardware probably contain older firmware version with
3708  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3709  */
3710 {
3711         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3712                           | USB_DEVICE_ID_MATCH_DEVICE,
3713         .idVendor               = 0x13b1,
3714         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3715         RNDIS_MASTER_INTERFACE,
3716         .driver_info            = (unsigned long) &bcm4320a_info,
3717 }, {
3718         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3719                           | USB_DEVICE_ID_MATCH_DEVICE,
3720         .idVendor               = 0x0baf,
3721         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3722         RNDIS_MASTER_INTERFACE,
3723         .driver_info            = (unsigned long) &bcm4320a_info,
3724 }, {
3725         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3726                           | USB_DEVICE_ID_MATCH_DEVICE,
3727         .idVendor               = 0x0411,
3728         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3729         RNDIS_MASTER_INTERFACE,
3730         .driver_info            = (unsigned long) &bcm4320a_info,
3731 },
3732 /* Generic Wireless RNDIS devices that we don't have exact
3733  * idVendor/idProduct/chip yet.
3734  */
3735 {
3736         /* RNDIS is MSFT's un-official variant of CDC ACM */
3737         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3738         .driver_info = (unsigned long) &rndis_wlan_info,
3739 }, {
3740         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3741         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3742         .driver_info = (unsigned long) &rndis_wlan_info,
3743 },
3744         { },            // END
3745 };
3746 MODULE_DEVICE_TABLE(usb, products);
3747
3748 static struct usb_driver rndis_wlan_driver = {
3749         .name =         "rndis_wlan",
3750         .id_table =     products,
3751         .probe =        usbnet_probe,
3752         .disconnect =   usbnet_disconnect,
3753         .suspend =      usbnet_suspend,
3754         .resume =       usbnet_resume,
3755         .disable_hub_initiated_lpm = 1,
3756 };
3757
3758 module_usb_driver(rndis_wlan_driver);
3759
3760 MODULE_AUTHOR("Bjorge Dijkstra");
3761 MODULE_AUTHOR("Jussi Kivilinna");
3762 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3763 MODULE_LICENSE("GPL");
3764