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         __le32 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, struct net_device *dev,
 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_set_channel(struct wiphy *wiphy, struct net_device *dev,
 509         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
 510
 511 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 512                          u8 key_index, bool pairwise, const u8 *mac_addr,
 513                          struct key_params *params);
 514
 515 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 516                          u8 key_index, bool pairwise, const u8 *mac_addr);
 517
 518 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 519                                  u8 key_index, bool unicast, bool multicast);
 520
 521 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 522                                         u8 *mac, struct station_info *sinfo);
 523
 524 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 525                                int idx, u8 *mac, struct station_info *sinfo);
 526
 527 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 528                                 struct cfg80211_pmksa *pmksa);
 529
 530 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 531                                 struct cfg80211_pmksa *pmksa);
 532
 533 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 534
 535 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 536                                 bool enabled, int timeout);
 537
 538 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 539                                         struct net_device *dev,
 540                                         s32 rssi_thold, u32 rssi_hyst);
 541
 542 static const struct cfg80211_ops rndis_config_ops = {
 543         .change_virtual_intf = rndis_change_virtual_intf,
 544         .scan = rndis_scan,
 545         .set_wiphy_params = rndis_set_wiphy_params,
 546         .set_tx_power = rndis_set_tx_power,
 547         .get_tx_power = rndis_get_tx_power,
 548         .connect = rndis_connect,
 549         .disconnect = rndis_disconnect,
 550         .join_ibss = rndis_join_ibss,
 551         .leave_ibss = rndis_leave_ibss,
 552         .set_channel = rndis_set_channel,
 553         .add_key = rndis_add_key,
 554         .del_key = rndis_del_key,
 555         .set_default_key = rndis_set_default_key,
 556         .get_station = rndis_get_station,
 557         .dump_station = rndis_dump_station,
 558         .set_pmksa = rndis_set_pmksa,
 559         .del_pmksa = rndis_del_pmksa,
 560         .flush_pmksa = rndis_flush_pmksa,
 561         .set_power_mgmt = rndis_set_power_mgmt,
 562         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 563 };
 564
 565 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 566
 567
 568 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 569 {
 570         return (struct rndis_wlan_private *)dev->driver_priv;
 571 }
 572
 573 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 574 {
 575         switch (priv->param_power_output) {
 576         default:
 577         case 3:
 578                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 579         case 2:
 580                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 581         case 1:
 582                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 583         case 0:
 584                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 585         }
 586 }
 587
 588 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 589 {
 590         int cipher = priv->encr_keys[idx].cipher;
 591
 592         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 593                 cipher == WLAN_CIPHER_SUITE_TKIP);
 594 }
 595
 596 static int rndis_cipher_to_alg(u32 cipher)
 597 {
 598         switch (cipher) {
 599         default:
 600                 return RNDIS_WLAN_ALG_NONE;
 601         case WLAN_CIPHER_SUITE_WEP40:
 602         case WLAN_CIPHER_SUITE_WEP104:
 603                 return RNDIS_WLAN_ALG_WEP;
 604         case WLAN_CIPHER_SUITE_TKIP:
 605                 return RNDIS_WLAN_ALG_TKIP;
 606         case WLAN_CIPHER_SUITE_CCMP:
 607                 return RNDIS_WLAN_ALG_CCMP;
 608         }
 609 }
 610
 611 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 612 {
 613         switch (akm_suite) {
 614         default:
 615                 return RNDIS_WLAN_KEY_MGMT_NONE;
 616         case WLAN_AKM_SUITE_8021X:
 617                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 618         case WLAN_AKM_SUITE_PSK:
 619                 return RNDIS_WLAN_KEY_MGMT_PSK;
 620         }
 621 }
 622
 623 #ifdef DEBUG
 624 static const char *oid_to_string(__le32 oid)
 625 {
 626         switch (oid) {
 627 #define OID_STR(oid) case cpu_to_le32(oid): return(#oid)
 628                 /* from rndis_host.h */
 629                 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 630                 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 631                 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 632                 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 633
 634                 /* from rndis_wlan.c */
 635                 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 636                 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 637
 638                 OID_STR(RNDIS_OID_GEN_XMIT_OK);
 639                 OID_STR(RNDIS_OID_GEN_RCV_OK);
 640                 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 641                 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 642                 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 643
 644                 OID_STR(OID_802_3_CURRENT_ADDRESS);
 645                 OID_STR(OID_802_3_MULTICAST_LIST);
 646                 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
 647
 648                 OID_STR(OID_802_11_BSSID);
 649                 OID_STR(OID_802_11_SSID);
 650                 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
 651                 OID_STR(OID_802_11_ADD_WEP);
 652                 OID_STR(OID_802_11_REMOVE_WEP);
 653                 OID_STR(OID_802_11_DISASSOCIATE);
 654                 OID_STR(OID_802_11_AUTHENTICATION_MODE);
 655                 OID_STR(OID_802_11_PRIVACY_FILTER);
 656                 OID_STR(OID_802_11_BSSID_LIST_SCAN);
 657                 OID_STR(OID_802_11_ENCRYPTION_STATUS);
 658                 OID_STR(OID_802_11_ADD_KEY);
 659                 OID_STR(OID_802_11_REMOVE_KEY);
 660                 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
 661                 OID_STR(OID_802_11_CAPABILITY);
 662                 OID_STR(OID_802_11_PMKID);
 663                 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
 664                 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
 665                 OID_STR(OID_802_11_TX_POWER_LEVEL);
 666                 OID_STR(OID_802_11_RSSI);
 667                 OID_STR(OID_802_11_RSSI_TRIGGER);
 668                 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
 669                 OID_STR(OID_802_11_RTS_THRESHOLD);
 670                 OID_STR(OID_802_11_SUPPORTED_RATES);
 671                 OID_STR(OID_802_11_CONFIGURATION);
 672                 OID_STR(OID_802_11_POWER_MODE);
 673                 OID_STR(OID_802_11_BSSID_LIST);
 674 #undef OID_STR
 675         }
 676
 677         return "?";
 678 }
 679 #else
 680 static const char *oid_to_string(__le32 oid)
 681 {
 682         return "?";
 683 }
 684 #endif
 685
 686 /* translate error code */
 687 static int rndis_error_status(__le32 rndis_status)
 688 {
 689         int ret = -EINVAL;
 690         switch (rndis_status) {
 691         case cpu_to_le32(RNDIS_STATUS_SUCCESS):
 692                 ret = 0;
 693                 break;
 694         case cpu_to_le32(RNDIS_STATUS_FAILURE):
 695         case cpu_to_le32(RNDIS_STATUS_INVALID_DATA):
 696                 ret = -EINVAL;
 697                 break;
 698         case cpu_to_le32(RNDIS_STATUS_NOT_SUPPORTED):
 699                 ret = -EOPNOTSUPP;
 700                 break;
 701         case cpu_to_le32(RNDIS_STATUS_ADAPTER_NOT_READY):
 702         case cpu_to_le32(RNDIS_STATUS_ADAPTER_NOT_OPEN):
 703                 ret = -EBUSY;
 704                 break;
 705         }
 706         return ret;
 707 }
 708
 709 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
 710 {
 711         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 712         union {
 713                 void                    *buf;
 714                 struct rndis_msg_hdr    *header;
 715                 struct rndis_query      *get;
 716                 struct rndis_query_c    *get_c;
 717         } u;
 718         int ret, buflen;
 719         int resplen, respoffs, copylen;
 720
 721         buflen = *len + sizeof(*u.get);
 722         if (buflen < CONTROL_BUFFER_SIZE)
 723                 buflen = CONTROL_BUFFER_SIZE;
 724
 725         if (buflen > COMMAND_BUFFER_SIZE) {
 726                 u.buf = kmalloc(buflen, GFP_KERNEL);
 727                 if (!u.buf)
 728                         return -ENOMEM;
 729         } else {
 730                 u.buf = priv->command_buffer;
 731         }
 732
 733         mutex_lock(&priv->command_lock);
 734
 735         memset(u.get, 0, sizeof *u.get);
 736         u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 737         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 738         u.get->oid = oid;
 739
 740         priv->current_command_oid = oid;
 741         ret = rndis_command(dev, u.header, buflen);
 742         priv->current_command_oid = 0;
 743         if (ret < 0)
 744                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 745                            __func__, oid_to_string(oid), ret,
 746                            le32_to_cpu(u.get_c->status));
 747
 748         if (ret == 0) {
 749                 resplen = le32_to_cpu(u.get_c->len);
 750                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 751
 752                 if (respoffs > buflen) {
 753                         /* Device returned data offset outside buffer, error. */
 754                         netdev_dbg(dev->net, "%s(%s): received invalid "
 755                                 "data offset: %d > %d\n", __func__,
 756                                 oid_to_string(oid), respoffs, buflen);
 757
 758                         ret = -EINVAL;
 759                         goto exit_unlock;
 760                 }
 761
 762                 if ((resplen + respoffs) > buflen) {
 763                         /* Device would have returned more data if buffer would
 764                          * have been big enough. Copy just the bits that we got.
 765                          */
 766                         copylen = buflen - respoffs;
 767                 } else {
 768                         copylen = resplen;
 769                 }
 770
 771                 if (copylen > *len)
 772                         copylen = *len;
 773
 774                 memcpy(data, u.buf + respoffs, copylen);
 775
 776                 *len = resplen;
 777
 778                 ret = rndis_error_status(u.get_c->status);
 779                 if (ret < 0)
 780                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 781                                    __func__, oid_to_string(oid),
 782                                    le32_to_cpu(u.get_c->status), ret);
 783         }
 784
 785 exit_unlock:
 786         mutex_unlock(&priv->command_lock);
 787
 788         if (u.buf != priv->command_buffer)
 789                 kfree(u.buf);
 790         return ret;
 791 }
 792
 793 static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
 794                          int len)
 795 {
 796         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 797         union {
 798                 void                    *buf;
 799                 struct rndis_msg_hdr    *header;
 800                 struct rndis_set        *set;
 801                 struct rndis_set_c      *set_c;
 802         } u;
 803         int ret, buflen;
 804
 805         buflen = len + sizeof(*u.set);
 806         if (buflen < CONTROL_BUFFER_SIZE)
 807                 buflen = CONTROL_BUFFER_SIZE;
 808
 809         if (buflen > COMMAND_BUFFER_SIZE) {
 810                 u.buf = kmalloc(buflen, GFP_KERNEL);
 811                 if (!u.buf)
 812                         return -ENOMEM;
 813         } else {
 814                 u.buf = priv->command_buffer;
 815         }
 816
 817         mutex_lock(&priv->command_lock);
 818
 819         memset(u.set, 0, sizeof *u.set);
 820         u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 821         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 822         u.set->oid = oid;
 823         u.set->len = cpu_to_le32(len);
 824         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 825         u.set->handle = cpu_to_le32(0);
 826         memcpy(u.buf + sizeof(*u.set), data, len);
 827
 828         priv->current_command_oid = oid;
 829         ret = rndis_command(dev, u.header, buflen);
 830         priv->current_command_oid = 0;
 831         if (ret < 0)
 832                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 833                            __func__, oid_to_string(oid), ret,
 834                            le32_to_cpu(u.set_c->status));
 835
 836         if (ret == 0) {
 837                 ret = rndis_error_status(u.set_c->status);
 838
 839                 if (ret < 0)
 840                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 841                                    __func__, oid_to_string(oid),
 842                                    le32_to_cpu(u.set_c->status), ret);
 843         }
 844
 845         mutex_unlock(&priv->command_lock);
 846
 847         if (u.buf != priv->command_buffer)
 848                 kfree(u.buf);
 849         return ret;
 850 }
 851
 852 static int rndis_reset(struct usbnet *usbdev)
 853 {
 854         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 855         struct rndis_reset *reset;
 856         int ret;
 857
 858         mutex_lock(&priv->command_lock);
 859
 860         reset = (void *)priv->command_buffer;
 861         memset(reset, 0, sizeof(*reset));
 862         reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 863         reset->msg_len = cpu_to_le32(sizeof(*reset));
 864         priv->current_command_oid = 0;
 865         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 866
 867         mutex_unlock(&priv->command_lock);
 868
 869         if (ret < 0)
 870                 return ret;
 871         return 0;
 872 }
 873
 874 /*
 875  * Specs say that we can only set config parameters only soon after device
 876  * initialization.
 877  *   value_type: 0 = u32, 2 = unicode string
 878  */
 879 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 880                                                 int value_type, void *value)
 881 {
 882         struct ndis_config_param *infobuf;
 883         int value_len, info_len, param_len, ret, i;
 884         __le16 *unibuf;
 885         __le32 *dst_value;
 886
 887         if (value_type == 0)
 888                 value_len = sizeof(__le32);
 889         else if (value_type == 2)
 890                 value_len = strlen(value) * sizeof(__le16);
 891         else
 892                 return -EINVAL;
 893
 894         param_len = strlen(param) * sizeof(__le16);
 895         info_len = sizeof(*infobuf) + param_len + value_len;
 896
 897 #ifdef DEBUG
 898         info_len += 12;
 899 #endif
 900         infobuf = kmalloc(info_len, GFP_KERNEL);
 901         if (!infobuf)
 902                 return -ENOMEM;
 903
 904 #ifdef DEBUG
 905         info_len -= 12;
 906         /* extra 12 bytes are for padding (debug output) */
 907         memset(infobuf, 0xCC, info_len + 12);
 908 #endif
 909
 910         if (value_type == 2)
 911                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 912                            param, (u8 *)value);
 913         else
 914                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 915                            param, *(u32 *)value);
 916
 917         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 918         infobuf->name_length = cpu_to_le32(param_len);
 919         infobuf->type = cpu_to_le32(value_type);
 920         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 921         infobuf->value_length = cpu_to_le32(value_len);
 922
 923         /* simple string to unicode string conversion */
 924         unibuf = (void *)infobuf + sizeof(*infobuf);
 925         for (i = 0; i < param_len / sizeof(__le16); i++)
 926                 unibuf[i] = cpu_to_le16(param[i]);
 927
 928         if (value_type == 2) {
 929                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 930                 for (i = 0; i < value_len / sizeof(__le16); i++)
 931                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 932         } else {
 933                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 934                 *dst_value = cpu_to_le32(*(u32 *)value);
 935         }
 936
 937 #ifdef DEBUG
 938         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 939         for (i = 0; i < info_len; i += 12) {
 940                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 941                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 942                            cpu_to_be32(tmp[0]),
 943                            cpu_to_be32(tmp[1]),
 944                            cpu_to_be32(tmp[2]));
 945         }
 946 #endif
 947
 948         ret = rndis_set_oid(dev, cpu_to_le32(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER),
 949                                                         infobuf, info_len);
 950         if (ret != 0)
 951                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 952                            ret);
 953
 954         kfree(infobuf);
 955         return ret;
 956 }
 957
 958 static int rndis_set_config_parameter_str(struct usbnet *dev,
 959                                                 char *param, char *value)
 960 {
 961         return rndis_set_config_parameter(dev, param, 2, value);
 962 }
 963
 964 /*
 965  * data conversion functions
 966  */
 967 static int level_to_qual(int level)
 968 {
 969         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 970         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 971 }
 972
 973 /*
 974  * common functions
 975  */
 976 static int set_infra_mode(struct usbnet *usbdev, int mode);
 977 static void restore_keys(struct usbnet *usbdev);
 978 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 979                                         bool *matched);
 980
 981 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 982 {
 983         __le32 tmp;
 984
 985         /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 986         tmp = cpu_to_le32(1);
 987         return rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_BSSID_LIST_SCAN), &tmp,
 988                                                         sizeof(tmp));
 989 }
 990
 991 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 992 {
 993         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 994         int ret;
 995
 996         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_SSID), ssid, sizeof(*ssid));
 997         if (ret < 0) {
 998                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 999                 return ret;
1000         }
1001         if (ret == 0) {
1002                 priv->radio_on = true;
1003                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1004         }
1005
1006         return ret;
1007 }
1008
1009 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1010 {
1011         int ret;
1012
1013         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_BSSID), bssid, ETH_ALEN);
1014         if (ret < 0) {
1015                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1016                             bssid, ret);
1017                 return ret;
1018         }
1019
1020         return ret;
1021 }
1022
1023 static int clear_bssid(struct usbnet *usbdev)
1024 {
1025         static const u8 broadcast_mac[ETH_ALEN] = {
1026                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1027         };
1028
1029         return set_bssid(usbdev, broadcast_mac);
1030 }
1031
1032 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1033 {
1034         int ret, len;
1035
1036         len = ETH_ALEN;
1037         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_BSSID), bssid, &len);
1038
1039         if (ret != 0)
1040                 memset(bssid, 0, ETH_ALEN);
1041
1042         return ret;
1043 }
1044
1045 static int get_association_info(struct usbnet *usbdev,
1046                         struct ndis_80211_assoc_info *info, int len)
1047 {
1048         return rndis_query_oid(usbdev, cpu_to_le32(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, cpu_to_le32(OID_802_11_DISASSOCIATE), NULL, 0);
1074                 if (ret == 0) {
1075                         priv->radio_on = false;
1076                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1077                                    __func__);
1078
1079                         if (reset_ssid)
1080                                 msleep(100);
1081                 }
1082         }
1083
1084         /* disassociate causes radio to be turned off; if reset_ssid
1085          * is given, set random ssid to enable radio */
1086         if (reset_ssid) {
1087                 /* Set device to infrastructure mode so we don't get ad-hoc
1088                  * 'media connect' indications with the random ssid.
1089                  */
1090                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1091
1092                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1093                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1094                 ssid.essid[0] = 0x1;
1095                 ssid.essid[1] = 0xff;
1096                 for (i = 2; i < sizeof(ssid.essid); i++)
1097                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1098                 ret = set_essid(usbdev, &ssid);
1099         }
1100         return ret;
1101 }
1102
1103 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1104                                 enum nl80211_auth_type auth_type, int keymgmt)
1105 {
1106         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1107         __le32 tmp;
1108         int auth_mode, ret;
1109
1110         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1111                    __func__, wpa_version, auth_type, keymgmt);
1112
1113         if (wpa_version & NL80211_WPA_VERSION_2) {
1114                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1115                         auth_mode = NDIS_80211_AUTH_WPA2;
1116                 else
1117                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1118         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1119                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1120                         auth_mode = NDIS_80211_AUTH_WPA;
1121                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1122                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1123                 else
1124                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1125         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1126                 auth_mode = NDIS_80211_AUTH_SHARED;
1127         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1128                 auth_mode = NDIS_80211_AUTH_OPEN;
1129         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1130                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1131         else
1132                 return -ENOTSUPP;
1133
1134         tmp = cpu_to_le32(auth_mode);
1135         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_AUTHENTICATION_MODE), &tmp,
1136                                                                 sizeof(tmp));
1137         if (ret != 0) {
1138                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1139                             ret);
1140                 return ret;
1141         }
1142
1143         priv->wpa_version = wpa_version;
1144
1145         return 0;
1146 }
1147
1148 static int set_priv_filter(struct usbnet *usbdev)
1149 {
1150         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1151         __le32 tmp;
1152
1153         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1154                    __func__, priv->wpa_version);
1155
1156         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1157             priv->wpa_version & NL80211_WPA_VERSION_1)
1158                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1159         else
1160                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1161
1162         return rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_PRIVACY_FILTER), &tmp,
1163                                                                 sizeof(tmp));
1164 }
1165
1166 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1167 {
1168         __le32 tmp;
1169         int encr_mode, ret;
1170
1171         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1172                    __func__, pairwise, groupwise);
1173
1174         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1175                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1176         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1177                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1178         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1179                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1180         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1181                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1182         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1183                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1184         else
1185                 encr_mode = NDIS_80211_ENCR_DISABLED;
1186
1187         tmp = cpu_to_le32(encr_mode);
1188         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_ENCRYPTION_STATUS), &tmp,
1189                                                                 sizeof(tmp));
1190         if (ret != 0) {
1191                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1192                             ret);
1193                 return ret;
1194         }
1195
1196         return 0;
1197 }
1198
1199 static int set_infra_mode(struct usbnet *usbdev, int mode)
1200 {
1201         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1202         __le32 tmp;
1203         int ret;
1204
1205         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1206                    __func__, priv->infra_mode);
1207
1208         tmp = cpu_to_le32(mode);
1209         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_INFRASTRUCTURE_MODE), &tmp,
1210                                                                 sizeof(tmp));
1211         if (ret != 0) {
1212                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1213                             ret);
1214                 return ret;
1215         }
1216
1217         /* NDIS drivers clear keys when infrastructure mode is
1218          * changed. But Linux tools assume otherwise. So set the
1219          * keys */
1220         restore_keys(usbdev);
1221
1222         priv->infra_mode = mode;
1223         return 0;
1224 }
1225
1226 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1227 {
1228         __le32 tmp;
1229
1230         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1231
1232         if (rts_threshold < 0 || rts_threshold > 2347)
1233                 rts_threshold = 2347;
1234
1235         tmp = cpu_to_le32(rts_threshold);
1236         return rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_RTS_THRESHOLD), &tmp,
1237                                                                 sizeof(tmp));
1238 }
1239
1240 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1241 {
1242         __le32 tmp;
1243
1244         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1245
1246         if (frag_threshold < 256 || frag_threshold > 2346)
1247                 frag_threshold = 2346;
1248
1249         tmp = cpu_to_le32(frag_threshold);
1250         return rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_FRAGMENTATION_THRESHOLD), &tmp,
1251                                                                 sizeof(tmp));
1252 }
1253
1254 static void set_default_iw_params(struct usbnet *usbdev)
1255 {
1256         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1257         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1258                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1259         set_priv_filter(usbdev);
1260         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1261 }
1262
1263 static int deauthenticate(struct usbnet *usbdev)
1264 {
1265         int ret;
1266
1267         ret = disassociate(usbdev, true);
1268         set_default_iw_params(usbdev);
1269         return ret;
1270 }
1271
1272 static int set_channel(struct usbnet *usbdev, int channel)
1273 {
1274         struct ndis_80211_conf config;
1275         unsigned int dsconfig;
1276         int len, ret;
1277
1278         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1279
1280         /* this OID is valid only when not associated */
1281         if (is_associated(usbdev))
1282                 return 0;
1283
1284         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1285
1286         len = sizeof(config);
1287         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_CONFIGURATION), &config, &len);
1288         if (ret < 0) {
1289                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1290                            __func__);
1291                 return ret;
1292         }
1293
1294         config.ds_config = cpu_to_le32(dsconfig);
1295         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_CONFIGURATION), &config,
1296                                                                 sizeof(config));
1297
1298         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1299
1300         return ret;
1301 }
1302
1303 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1304                                                      u32 *beacon_period)
1305 {
1306         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1307         struct ieee80211_channel *channel;
1308         struct ndis_80211_conf config;
1309         int len, ret;
1310
1311         /* Get channel and beacon interval */
1312         len = sizeof(config);
1313         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_CONFIGURATION), &config, &len);
1314         netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
1315                                 __func__, ret);
1316         if (ret < 0)
1317                 return NULL;
1318
1319         channel = ieee80211_get_channel(priv->wdev.wiphy,
1320                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1321         if (!channel)
1322                 return NULL;
1323
1324         if (beacon_period)
1325                 *beacon_period = le32_to_cpu(config.beacon_period);
1326         return channel;
1327 }
1328
1329 /* index must be 0 - N, as per NDIS  */
1330 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1331                                                                 u8 index)
1332 {
1333         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1334         struct ndis_80211_wep_key ndis_key;
1335         u32 cipher;
1336         int ret;
1337
1338         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1339                    __func__, index, key_len);
1340
1341         if (index >= RNDIS_WLAN_NUM_KEYS)
1342                 return -EINVAL;
1343
1344         if (key_len == 5)
1345                 cipher = WLAN_CIPHER_SUITE_WEP40;
1346         else if (key_len == 13)
1347                 cipher = WLAN_CIPHER_SUITE_WEP104;
1348         else
1349                 return -EINVAL;
1350
1351         memset(&ndis_key, 0, sizeof(ndis_key));
1352
1353         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1354         ndis_key.length = cpu_to_le32(key_len);
1355         ndis_key.index = cpu_to_le32(index);
1356         memcpy(&ndis_key.material, key, key_len);
1357
1358         if (index == priv->encr_tx_key_index) {
1359                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1360                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1361                                                         RNDIS_WLAN_ALG_NONE);
1362                 if (ret)
1363                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1364                                     ret);
1365         }
1366
1367         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_ADD_WEP), &ndis_key,
1368                                                         sizeof(ndis_key));
1369         if (ret != 0) {
1370                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1371                             index + 1, ret);
1372                 return ret;
1373         }
1374
1375         priv->encr_keys[index].len = key_len;
1376         priv->encr_keys[index].cipher = cipher;
1377         memcpy(&priv->encr_keys[index].material, key, key_len);
1378         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1379
1380         return 0;
1381 }
1382
1383 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1384                         u8 index, const u8 *addr, const u8 *rx_seq,
1385                         int seq_len, u32 cipher, __le32 flags)
1386 {
1387         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1388         struct ndis_80211_key ndis_key;
1389         bool is_addr_ok;
1390         int ret;
1391
1392         if (index >= RNDIS_WLAN_NUM_KEYS) {
1393                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1394                            __func__, index);
1395                 return -EINVAL;
1396         }
1397         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1398                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1399                            __func__, key_len);
1400                 return -EINVAL;
1401         }
1402         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1403                 if (!rx_seq || seq_len <= 0) {
1404                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1405                                    __func__);
1406                         return -EINVAL;
1407                 }
1408                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1409                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1410                         return -EINVAL;
1411                 }
1412         }
1413
1414         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1415                                         !is_broadcast_ether_addr(addr);
1416         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1417                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1418                            __func__, addr);
1419                 return -EINVAL;
1420         }
1421
1422         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1423                    __func__, index,
1424                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1425                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1426                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1427
1428         memset(&ndis_key, 0, sizeof(ndis_key));
1429
1430         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1431                                 sizeof(ndis_key.material) + key_len);
1432         ndis_key.length = cpu_to_le32(key_len);
1433         ndis_key.index = cpu_to_le32(index) | flags;
1434
1435         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1436                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1437                  * different order than NDIS spec, so swap the order here. */
1438                 memcpy(ndis_key.material, key, 16);
1439                 memcpy(ndis_key.material + 16, key + 24, 8);
1440                 memcpy(ndis_key.material + 24, key + 16, 8);
1441         } else
1442                 memcpy(ndis_key.material, key, key_len);
1443
1444         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1445                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1446
1447         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1448                 /* pairwise key */
1449                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1450         } else {
1451                 /* group key */
1452                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1453                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1454                 else
1455                         get_bssid(usbdev, ndis_key.bssid);
1456         }
1457
1458         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_ADD_KEY), &ndis_key,
1459                                         le32_to_cpu(ndis_key.size));
1460         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1461                    __func__, ret);
1462         if (ret != 0)
1463                 return ret;
1464
1465         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1466         priv->encr_keys[index].len = key_len;
1467         priv->encr_keys[index].cipher = cipher;
1468         memcpy(&priv->encr_keys[index].material, key, key_len);
1469         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1470                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1471         else
1472                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1473
1474         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1475                 priv->encr_tx_key_index = index;
1476
1477         return 0;
1478 }
1479
1480 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1481 {
1482         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1483         struct rndis_wlan_encr_key key;
1484
1485         if (is_wpa_key(priv, key_idx))
1486                 return 0;
1487
1488         key = priv->encr_keys[key_idx];
1489
1490         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1491
1492         if (key.len == 0)
1493                 return 0;
1494
1495         return add_wep_key(usbdev, key.material, key.len, key_idx);
1496 }
1497
1498 static void restore_keys(struct usbnet *usbdev)
1499 {
1500         int i;
1501
1502         for (i = 0; i < 4; i++)
1503                 restore_key(usbdev, i);
1504 }
1505
1506 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1507 {
1508         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1509 }
1510
1511 /* remove_key is for both wep and wpa */
1512 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1513 {
1514         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1515         struct ndis_80211_remove_key remove_key;
1516         __le32 keyindex;
1517         bool is_wpa;
1518         int ret;
1519
1520         if (index >= RNDIS_WLAN_NUM_KEYS)
1521                 return -ENOENT;
1522
1523         if (priv->encr_keys[index].len == 0)
1524                 return 0;
1525
1526         is_wpa = is_wpa_key(priv, index);
1527
1528         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1529                    __func__, index, is_wpa ? "wpa" : "wep",
1530                    priv->encr_keys[index].len);
1531
1532         clear_key(priv, index);
1533
1534         if (is_wpa) {
1535                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1536                 remove_key.index = cpu_to_le32(index);
1537                 if (bssid) {
1538                         /* pairwise key */
1539                         if (!is_broadcast_ether_addr(bssid))
1540                                 remove_key.index |=
1541                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1542                         memcpy(remove_key.bssid, bssid,
1543                                         sizeof(remove_key.bssid));
1544                 } else
1545                         memset(remove_key.bssid, 0xff,
1546                                                 sizeof(remove_key.bssid));
1547
1548                 ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_REMOVE_KEY), &remove_key,
1549                                                         sizeof(remove_key));
1550                 if (ret != 0)
1551                         return ret;
1552         } else {
1553                 keyindex = cpu_to_le32(index);
1554                 ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_REMOVE_WEP), &keyindex,
1555                                                         sizeof(keyindex));
1556                 if (ret != 0) {
1557                         netdev_warn(usbdev->net,
1558                                     "removing encryption key %d failed (%08X)\n",
1559                                     index, ret);
1560                         return ret;
1561                 }
1562         }
1563
1564         /* if it is transmit key, disable encryption */
1565         if (index == priv->encr_tx_key_index)
1566                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1567
1568         return 0;
1569 }
1570
1571 static void set_multicast_list(struct usbnet *usbdev)
1572 {
1573         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1574         struct netdev_hw_addr *ha;
1575         __le32 filter, basefilter;
1576         int ret;
1577         char *mc_addrs = NULL;
1578         int mc_count;
1579
1580         basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1581                                           RNDIS_PACKET_TYPE_BROADCAST);
1582
1583         if (usbdev->net->flags & IFF_PROMISC) {
1584                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1585                                       RNDIS_PACKET_TYPE_ALL_LOCAL);
1586         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1587                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1588         }
1589
1590         if (filter != basefilter)
1591                 goto set_filter;
1592
1593         /*
1594          * mc_list should be accessed holding the lock, so copy addresses to
1595          * local buffer first.
1596          */
1597         netif_addr_lock_bh(usbdev->net);
1598         mc_count = netdev_mc_count(usbdev->net);
1599         if (mc_count > priv->multicast_size) {
1600                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1601         } else if (mc_count) {
1602                 int i = 0;
1603
1604                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1605                 if (!mc_addrs) {
1606                         netdev_warn(usbdev->net,
1607                                     "couldn't alloc %d bytes of memory\n",
1608                                     mc_count * ETH_ALEN);
1609                         netif_addr_unlock_bh(usbdev->net);
1610                         return;
1611                 }
1612
1613                 netdev_for_each_mc_addr(ha, usbdev->net)
1614                         memcpy(mc_addrs + i++ * ETH_ALEN,
1615                                ha->addr, ETH_ALEN);
1616         }
1617         netif_addr_unlock_bh(usbdev->net);
1618
1619         if (filter != basefilter)
1620                 goto set_filter;
1621
1622         if (mc_count) {
1623                 ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_3_MULTICAST_LIST), mc_addrs,
1624                                     mc_count * ETH_ALEN);
1625                 kfree(mc_addrs);
1626                 if (ret == 0)
1627                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1628                 else
1629                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1630
1631                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1632                            mc_count, priv->multicast_size, ret);
1633         }
1634
1635 set_filter:
1636         ret = rndis_set_oid(usbdev, cpu_to_le32(RNDIS_OID_GEN_CURRENT_PACKET_FILTER), &filter,
1637                                                         sizeof(filter));
1638         if (ret < 0) {
1639                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1640                             le32_to_cpu(filter));
1641         }
1642
1643         netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1644                    le32_to_cpu(filter), ret);
1645 }
1646
1647 #ifdef DEBUG
1648 static void debug_print_pmkids(struct usbnet *usbdev,
1649                                 struct ndis_80211_pmkid *pmkids,
1650                                 const char *func_str)
1651 {
1652         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1653         int i, len, count, max_pmkids, entry_len;
1654
1655         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1656         len = le32_to_cpu(pmkids->length);
1657         count = le32_to_cpu(pmkids->bssid_info_count);
1658
1659         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1660
1661         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1662                                 "%d)\n", func_str, count, len, entry_len);
1663
1664         if (count > max_pmkids)
1665                 count = max_pmkids;
1666
1667         for (i = 0; i < count; i++) {
1668                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1669
1670                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1671                                 "pmkid: %08X:%08X:%08X:%08X\n",
1672                                 func_str, pmkids->bssid_info[i].bssid,
1673                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1674                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1675         }
1676 }
1677 #else
1678 static void debug_print_pmkids(struct usbnet *usbdev,
1679                                 struct ndis_80211_pmkid *pmkids,
1680                                 const char *func_str)
1681 {
1682         return;
1683 }
1684 #endif
1685
1686 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1687 {
1688         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1689         struct ndis_80211_pmkid *pmkids;
1690         int len, ret, max_pmkids;
1691
1692         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1693         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1694
1695         pmkids = kzalloc(len, GFP_KERNEL);
1696         if (!pmkids)
1697                 return ERR_PTR(-ENOMEM);
1698
1699         pmkids->length = cpu_to_le32(len);
1700         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1701
1702         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_PMKID), pmkids, &len);
1703         if (ret < 0) {
1704                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1705                                 " -> %d\n", __func__, len, max_pmkids, ret);
1706
1707                 kfree(pmkids);
1708                 return ERR_PTR(ret);
1709         }
1710
1711         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1712                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1713
1714         debug_print_pmkids(usbdev, pmkids, __func__);
1715
1716         return pmkids;
1717 }
1718
1719 static int set_device_pmkids(struct usbnet *usbdev,
1720                                 struct ndis_80211_pmkid *pmkids)
1721 {
1722         int ret, len, num_pmkids;
1723
1724         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1725         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1726         pmkids->length = cpu_to_le32(len);
1727
1728         debug_print_pmkids(usbdev, pmkids, __func__);
1729
1730         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_PMKID), pmkids,
1731                                                 le32_to_cpu(pmkids->length));
1732         if (ret < 0) {
1733                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1734                                 "\n", __func__, len, num_pmkids, ret);
1735         }
1736
1737         kfree(pmkids);
1738         return ret;
1739 }
1740
1741 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1742                                                 struct ndis_80211_pmkid *pmkids,
1743                                                 struct cfg80211_pmksa *pmksa,
1744                                                 int max_pmkids)
1745 {
1746         int i, newlen, err;
1747         unsigned int count;
1748
1749         count = le32_to_cpu(pmkids->bssid_info_count);
1750
1751         if (count > max_pmkids)
1752                 count = max_pmkids;
1753
1754         for (i = 0; i < count; i++)
1755                 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1756                                      pmksa->bssid))
1757                         break;
1758
1759         /* pmkid not found */
1760         if (i == count) {
1761                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1762                                         __func__, pmksa->bssid);
1763                 err = -ENOENT;
1764                 goto error;
1765         }
1766
1767         for (; i + 1 < count; i++)
1768                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1769
1770         count--;
1771         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1772
1773         pmkids->length = cpu_to_le32(newlen);
1774         pmkids->bssid_info_count = cpu_to_le32(count);
1775
1776         return pmkids;
1777 error:
1778         kfree(pmkids);
1779         return ERR_PTR(err);
1780 }
1781
1782 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1783                                                 struct ndis_80211_pmkid *pmkids,
1784                                                 struct cfg80211_pmksa *pmksa,
1785                                                 int max_pmkids)
1786 {
1787         int i, err, newlen;
1788         unsigned int count;
1789
1790         count = le32_to_cpu(pmkids->bssid_info_count);
1791
1792         if (count > max_pmkids)
1793                 count = max_pmkids;
1794
1795         /* update with new pmkid */
1796         for (i = 0; i < count; i++) {
1797                 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1798                                       pmksa->bssid))
1799                         continue;
1800
1801                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1802                                                                 WLAN_PMKID_LEN);
1803
1804                 return pmkids;
1805         }
1806
1807         /* out of space, return error */
1808         if (i == max_pmkids) {
1809                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1810                 err = -ENOSPC;
1811                 goto error;
1812         }
1813
1814         /* add new pmkid */
1815         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1816
1817         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1818         if (!pmkids) {
1819                 err = -ENOMEM;
1820                 goto error;
1821         }
1822
1823         pmkids->length = cpu_to_le32(newlen);
1824         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1825
1826         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1827         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1828
1829         return pmkids;
1830 error:
1831         kfree(pmkids);
1832         return ERR_PTR(err);
1833 }
1834
1835 /*
1836  * cfg80211 ops
1837  */
1838 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1839                                         struct net_device *dev,
1840                                         enum nl80211_iftype type, u32 *flags,
1841                                         struct vif_params *params)
1842 {
1843         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1844         struct usbnet *usbdev = priv->usbdev;
1845         int mode;
1846
1847         switch (type) {
1848         case NL80211_IFTYPE_ADHOC:
1849                 mode = NDIS_80211_INFRA_ADHOC;
1850                 break;
1851         case NL80211_IFTYPE_STATION:
1852                 mode = NDIS_80211_INFRA_INFRA;
1853                 break;
1854         default:
1855                 return -EINVAL;
1856         }
1857
1858         priv->wdev.iftype = type;
1859
1860         return set_infra_mode(usbdev, mode);
1861 }
1862
1863 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1864 {
1865         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1866         struct usbnet *usbdev = priv->usbdev;
1867         int err;
1868
1869         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1870                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1871                 if (err < 0)
1872                         return err;
1873         }
1874
1875         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1876                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1877                 if (err < 0)
1878                         return err;
1879         }
1880
1881         return 0;
1882 }
1883
1884 static int rndis_set_tx_power(struct wiphy *wiphy,
1885                               enum nl80211_tx_power_setting type,
1886                               int mbm)
1887 {
1888         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1889         struct usbnet *usbdev = priv->usbdev;
1890
1891         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1892                    __func__, type, mbm);
1893
1894         if (mbm < 0 || (mbm % 100))
1895                 return -ENOTSUPP;
1896
1897         /* Device doesn't support changing txpower after initialization, only
1898          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1899          * currently used.
1900          */
1901         if (type == NL80211_TX_POWER_AUTOMATIC ||
1902             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1903                 if (!priv->radio_on)
1904                         disassociate(usbdev, true); /* turn on radio */
1905
1906                 return 0;
1907         }
1908
1909         return -ENOTSUPP;
1910 }
1911
1912 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1913 {
1914         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1915         struct usbnet *usbdev = priv->usbdev;
1916
1917         *dbm = get_bcm4320_power_dbm(priv);
1918
1919         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1920
1921         return 0;
1922 }
1923
1924 #define SCAN_DELAY_JIFFIES (6 * HZ)
1925 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1926                         struct cfg80211_scan_request *request)
1927 {
1928         struct usbnet *usbdev = netdev_priv(dev);
1929         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1930         int ret;
1931         int delay = SCAN_DELAY_JIFFIES;
1932
1933         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1934
1935         /* Get current bssid list from device before new scan, as new scan
1936          * clears internal bssid list.
1937          */
1938         rndis_check_bssid_list(usbdev, NULL, NULL);
1939
1940         if (!request)
1941                 return -EINVAL;
1942
1943         if (priv->scan_request && priv->scan_request != request)
1944                 return -EBUSY;
1945
1946         priv->scan_request = request;
1947
1948         ret = rndis_start_bssid_list_scan(usbdev);
1949         if (ret == 0) {
1950                 if (priv->device_type == RNDIS_BCM4320A)
1951                         delay = HZ;
1952
1953                 /* Wait before retrieving scan results from device */
1954                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1955         }
1956
1957         return ret;
1958 }
1959
1960 static bool rndis_bss_info_update(struct usbnet *usbdev,
1961                                   struct ndis_80211_bssid_ex *bssid)
1962 {
1963         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1964         struct ieee80211_channel *channel;
1965         struct cfg80211_bss *bss;
1966         s32 signal;
1967         u64 timestamp;
1968         u16 capability;
1969         u16 beacon_interval;
1970         struct ndis_80211_fixed_ies *fixed;
1971         int ie_len, bssid_len;
1972         u8 *ie;
1973
1974         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1975                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1976
1977         /* parse bssid structure */
1978         bssid_len = le32_to_cpu(bssid->length);
1979
1980         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1981                         sizeof(struct ndis_80211_fixed_ies))
1982                 return NULL;
1983
1984         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1985
1986         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1987         ie_len = min(bssid_len - (int)sizeof(*bssid),
1988                                         (int)le32_to_cpu(bssid->ie_length));
1989         ie_len -= sizeof(struct ndis_80211_fixed_ies);
1990         if (ie_len < 0)
1991                 return NULL;
1992
1993         /* extract data for cfg80211_inform_bss */
1994         channel = ieee80211_get_channel(priv->wdev.wiphy,
1995                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1996         if (!channel)
1997                 return NULL;
1998
1999         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2000         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2001         capability = le16_to_cpu(fixed->capabilities);
2002         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2003
2004         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2005                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2006                 GFP_KERNEL);
2007         cfg80211_put_bss(bss);
2008
2009         return (bss != NULL);
2010 }
2011
2012 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2013                                         struct ndis_80211_bssid_ex *bssid,
2014                                         int *bssid_len, void *buf, int len)
2015 {
2016         void *buf_end, *bssid_end;
2017
2018         buf_end = (char *)buf + len;
2019         bssid_end = (char *)bssid + *bssid_len;
2020
2021         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2022                 *bssid_len = 0;
2023                 return NULL;
2024         } else {
2025                 bssid = (void *)((char *)bssid + *bssid_len);
2026                 *bssid_len = le32_to_cpu(bssid->length);
2027                 return bssid;
2028         }
2029 }
2030
2031 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2032                                   int bssid_len, void *buf, int len)
2033 {
2034         void *buf_end, *bssid_end;
2035
2036         if (!bssid || bssid_len <= 0 || bssid_len > len)
2037                 return false;
2038
2039         buf_end = (char *)buf + len;
2040         bssid_end = (char *)bssid + bssid_len;
2041
2042         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2043 }
2044
2045 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2046                                         bool *matched)
2047 {
2048         void *buf = NULL;
2049         struct ndis_80211_bssid_list_ex *bssid_list;
2050         struct ndis_80211_bssid_ex *bssid;
2051         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2052
2053         netdev_dbg(usbdev->net, "%s()\n", __func__);
2054
2055         len = CONTROL_BUFFER_SIZE;
2056 resize_buf:
2057         buf = kzalloc(len, GFP_KERNEL);
2058         if (!buf) {
2059                 ret = -ENOMEM;
2060                 goto out;
2061         }
2062
2063         /* BSSID-list might have got bigger last time we checked, keep
2064          * resizing until it won't get any bigger.
2065          */
2066         new_len = len;
2067         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_BSSID_LIST), buf, &new_len);
2068         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2069                 goto out;
2070
2071         if (new_len > len) {
2072                 len = new_len;
2073                 kfree(buf);
2074                 goto resize_buf;
2075         }
2076
2077         len = new_len;
2078
2079         bssid_list = buf;
2080         count = le32_to_cpu(bssid_list->num_items);
2081         real_count = 0;
2082         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2083
2084         bssid_len = 0;
2085         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2086
2087         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2088          * received 'num_items' and walking through full bssid buffer instead.
2089          */
2090         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2091                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2092                     matched) {
2093                         if (!ether_addr_equal(bssid->mac, match_bssid))
2094                                 *matched = true;
2095                 }
2096
2097                 real_count++;
2098                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2099         }
2100
2101         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2102                                 " %d\n", __func__, count, real_count);
2103
2104 out:
2105         kfree(buf);
2106         return ret;
2107 }
2108
2109 static void rndis_get_scan_results(struct work_struct *work)
2110 {
2111         struct rndis_wlan_private *priv =
2112                 container_of(work, struct rndis_wlan_private, scan_work.work);
2113         struct usbnet *usbdev = priv->usbdev;
2114         int ret;
2115
2116         netdev_dbg(usbdev->net, "get_scan_results\n");
2117
2118         if (!priv->scan_request)
2119                 return;
2120
2121         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2122
2123         cfg80211_scan_done(priv->scan_request, ret < 0);
2124
2125         priv->scan_request = NULL;
2126 }
2127
2128 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2129                                         struct cfg80211_connect_params *sme)
2130 {
2131         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2132         struct usbnet *usbdev = priv->usbdev;
2133         struct ieee80211_channel *channel = sme->channel;
2134         struct ndis_80211_ssid ssid;
2135         int pairwise = RNDIS_WLAN_ALG_NONE;
2136         int groupwise = RNDIS_WLAN_ALG_NONE;
2137         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2138         int length, i, ret, chan = -1;
2139
2140         if (channel)
2141                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2142
2143         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2144         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2145                 pairwise |=
2146                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2147
2148         if (sme->crypto.n_ciphers_pairwise > 0 &&
2149                         pairwise == RNDIS_WLAN_ALG_NONE) {
2150                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2151                 return -ENOTSUPP;
2152         }
2153
2154         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2155                 keymgmt |=
2156                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2157
2158         if (sme->crypto.n_akm_suites > 0 &&
2159                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2160                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2161                 return -ENOTSUPP;
2162         }
2163
2164         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2165                    sme->ssid, sme->bssid, chan,
2166                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2167                    groupwise, pairwise, keymgmt);
2168
2169         if (is_associated(usbdev))
2170                 disassociate(usbdev, false);
2171
2172         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2173         if (ret < 0) {
2174                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2175                            ret);
2176                 goto err_turn_radio_on;
2177         }
2178
2179         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2180                                                                 keymgmt);
2181         if (ret < 0) {
2182                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2183                            ret);
2184                 goto err_turn_radio_on;
2185         }
2186
2187         set_priv_filter(usbdev);
2188
2189         ret = set_encr_mode(usbdev, pairwise, groupwise);
2190         if (ret < 0) {
2191                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2192                            ret);
2193                 goto err_turn_radio_on;
2194         }
2195
2196         if (channel) {
2197                 ret = set_channel(usbdev, chan);
2198                 if (ret < 0) {
2199                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2200                                    ret);
2201                         goto err_turn_radio_on;
2202                 }
2203         }
2204
2205         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2206                 priv->encr_tx_key_index = sme->key_idx;
2207                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2208                 if (ret < 0) {
2209                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2210                                    ret, sme->key_len, sme->key_idx);
2211                         goto err_turn_radio_on;
2212                 }
2213         }
2214
2215         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2216                                 !is_broadcast_ether_addr(sme->bssid)) {
2217                 ret = set_bssid(usbdev, sme->bssid);
2218                 if (ret < 0) {
2219                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2220                                    ret);
2221                         goto err_turn_radio_on;
2222                 }
2223         } else
2224                 clear_bssid(usbdev);
2225
2226         length = sme->ssid_len;
2227         if (length > NDIS_802_11_LENGTH_SSID)
2228                 length = NDIS_802_11_LENGTH_SSID;
2229
2230         memset(&ssid, 0, sizeof(ssid));
2231         ssid.length = cpu_to_le32(length);
2232         memcpy(ssid.essid, sme->ssid, length);
2233
2234         /* Pause and purge rx queue, so we don't pass packets before
2235          * 'media connect'-indication.
2236          */
2237         usbnet_pause_rx(usbdev);
2238         usbnet_purge_paused_rxq(usbdev);
2239
2240         ret = set_essid(usbdev, &ssid);
2241         if (ret < 0)
2242                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2243         return ret;
2244
2245 err_turn_radio_on:
2246         disassociate(usbdev, true);
2247
2248         return ret;
2249 }
2250
2251 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2252                                                                 u16 reason_code)
2253 {
2254         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2255         struct usbnet *usbdev = priv->usbdev;
2256
2257         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2258
2259         priv->connected = false;
2260         memset(priv->bssid, 0, ETH_ALEN);
2261
2262         return deauthenticate(usbdev);
2263 }
2264
2265 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2266                                         struct cfg80211_ibss_params *params)
2267 {
2268         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2269         struct usbnet *usbdev = priv->usbdev;
2270         struct ieee80211_channel *channel = params->channel;
2271         struct ndis_80211_ssid ssid;
2272         enum nl80211_auth_type auth_type;
2273         int ret, alg, length, chan = -1;
2274
2275         if (channel)
2276                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2277
2278         /* TODO: How to handle ad-hoc encryption?
2279          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2280          * pre-shared for encryption (open/shared/wpa), is key set before
2281          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2282          */
2283         if (params->privacy) {
2284                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2285                 alg = RNDIS_WLAN_ALG_WEP;
2286         } else {
2287                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2288                 alg = RNDIS_WLAN_ALG_NONE;
2289         }
2290
2291         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2292                    params->ssid, params->bssid, chan, params->privacy);
2293
2294         if (is_associated(usbdev))
2295                 disassociate(usbdev, false);
2296
2297         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2298         if (ret < 0) {
2299                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2300                            ret);
2301                 goto err_turn_radio_on;
2302         }
2303
2304         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2305         if (ret < 0) {
2306                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2307                            ret);
2308                 goto err_turn_radio_on;
2309         }
2310
2311         set_priv_filter(usbdev);
2312
2313         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2314         if (ret < 0) {
2315                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2316                            ret);
2317                 goto err_turn_radio_on;
2318         }
2319
2320         if (channel) {
2321                 ret = set_channel(usbdev, chan);
2322                 if (ret < 0) {
2323                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2324                                    ret);
2325                         goto err_turn_radio_on;
2326                 }
2327         }
2328
2329         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2330                                 !is_broadcast_ether_addr(params->bssid)) {
2331                 ret = set_bssid(usbdev, params->bssid);
2332                 if (ret < 0) {
2333                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2334                                    ret);
2335                         goto err_turn_radio_on;
2336                 }
2337         } else
2338                 clear_bssid(usbdev);
2339
2340         length = params->ssid_len;
2341         if (length > NDIS_802_11_LENGTH_SSID)
2342                 length = NDIS_802_11_LENGTH_SSID;
2343
2344         memset(&ssid, 0, sizeof(ssid));
2345         ssid.length = cpu_to_le32(length);
2346         memcpy(ssid.essid, params->ssid, length);
2347
2348         /* Don't need to pause rx queue for ad-hoc. */
2349         usbnet_purge_paused_rxq(usbdev);
2350         usbnet_resume_rx(usbdev);
2351
2352         ret = set_essid(usbdev, &ssid);
2353         if (ret < 0)
2354                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2355                            ret);
2356         return ret;
2357
2358 err_turn_radio_on:
2359         disassociate(usbdev, true);
2360
2361         return ret;
2362 }
2363
2364 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2365 {
2366         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2367         struct usbnet *usbdev = priv->usbdev;
2368
2369         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2370
2371         priv->connected = false;
2372         memset(priv->bssid, 0, ETH_ALEN);
2373
2374         return deauthenticate(usbdev);
2375 }
2376
2377 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2378         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2379 {
2380         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2381         struct usbnet *usbdev = priv->usbdev;
2382
2383         return set_channel(usbdev,
2384                         ieee80211_frequency_to_channel(chan->center_freq));
2385 }
2386
2387 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2388                          u8 key_index, bool pairwise, const u8 *mac_addr,
2389                          struct key_params *params)
2390 {
2391         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2392         struct usbnet *usbdev = priv->usbdev;
2393         __le32 flags;
2394
2395         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2396                    __func__, key_index, mac_addr, params->cipher);
2397
2398         switch (params->cipher) {
2399         case WLAN_CIPHER_SUITE_WEP40:
2400         case WLAN_CIPHER_SUITE_WEP104:
2401                 return add_wep_key(usbdev, params->key, params->key_len,
2402                                                                 key_index);
2403         case WLAN_CIPHER_SUITE_TKIP:
2404         case WLAN_CIPHER_SUITE_CCMP:
2405                 flags = 0;
2406
2407                 if (params->seq && params->seq_len > 0)
2408                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2409                 if (mac_addr)
2410                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2411                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2412
2413                 return add_wpa_key(usbdev, params->key, params->key_len,
2414                                 key_index, mac_addr, params->seq,
2415                                 params->seq_len, params->cipher, flags);
2416         default:
2417                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2418                            __func__, params->cipher);
2419                 return -ENOTSUPP;
2420         }
2421 }
2422
2423 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2424                          u8 key_index, bool pairwise, const u8 *mac_addr)
2425 {
2426         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2427         struct usbnet *usbdev = priv->usbdev;
2428
2429         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2430
2431         return remove_key(usbdev, key_index, mac_addr);
2432 }
2433
2434 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2435                                  u8 key_index, bool unicast, bool multicast)
2436 {
2437         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2438         struct usbnet *usbdev = priv->usbdev;
2439         struct rndis_wlan_encr_key key;
2440
2441         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2442
2443         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2444                 return -ENOENT;
2445
2446         priv->encr_tx_key_index = key_index;
2447
2448         if (is_wpa_key(priv, key_index))
2449                 return 0;
2450
2451         key = priv->encr_keys[key_index];
2452
2453         return add_wep_key(usbdev, key.material, key.len, key_index);
2454 }
2455
2456 static void rndis_fill_station_info(struct usbnet *usbdev,
2457                                                 struct station_info *sinfo)
2458 {
2459         __le32 linkspeed, rssi;
2460         int ret, len;
2461
2462         memset(sinfo, 0, sizeof(*sinfo));
2463
2464         len = sizeof(linkspeed);
2465         ret = rndis_query_oid(usbdev, cpu_to_le32(RNDIS_OID_GEN_LINK_SPEED), &linkspeed, &len);
2466         if (ret == 0) {
2467                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2468                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2469         }
2470
2471         len = sizeof(rssi);
2472         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_RSSI), &rssi, &len);
2473         if (ret == 0) {
2474                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2475                 sinfo->filled |= STATION_INFO_SIGNAL;
2476         }
2477 }
2478
2479 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2480                                         u8 *mac, struct station_info *sinfo)
2481 {
2482         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2483         struct usbnet *usbdev = priv->usbdev;
2484
2485         if (!ether_addr_equal(priv->bssid, mac))
2486                 return -ENOENT;
2487
2488         rndis_fill_station_info(usbdev, sinfo);
2489
2490         return 0;
2491 }
2492
2493 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2494                                int idx, u8 *mac, struct station_info *sinfo)
2495 {
2496         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2497         struct usbnet *usbdev = priv->usbdev;
2498
2499         if (idx != 0)
2500                 return -ENOENT;
2501
2502         memcpy(mac, priv->bssid, ETH_ALEN);
2503
2504         rndis_fill_station_info(usbdev, sinfo);
2505
2506         return 0;
2507 }
2508
2509 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2510                                 struct cfg80211_pmksa *pmksa)
2511 {
2512         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2513         struct usbnet *usbdev = priv->usbdev;
2514         struct ndis_80211_pmkid *pmkids;
2515         u32 *tmp = (u32 *)pmksa->pmkid;
2516
2517         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2518                         pmksa->bssid,
2519                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2520                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2521
2522         pmkids = get_device_pmkids(usbdev);
2523         if (IS_ERR(pmkids)) {
2524                 /* couldn't read PMKID cache from device */
2525                 return PTR_ERR(pmkids);
2526         }
2527
2528         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2529         if (IS_ERR(pmkids)) {
2530                 /* not found, list full, etc */
2531                 return PTR_ERR(pmkids);
2532         }
2533
2534         return set_device_pmkids(usbdev, pmkids);
2535 }
2536
2537 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2538                                 struct cfg80211_pmksa *pmksa)
2539 {
2540         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2541         struct usbnet *usbdev = priv->usbdev;
2542         struct ndis_80211_pmkid *pmkids;
2543         u32 *tmp = (u32 *)pmksa->pmkid;
2544
2545         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2546                         pmksa->bssid,
2547                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2548                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2549
2550         pmkids = get_device_pmkids(usbdev);
2551         if (IS_ERR(pmkids)) {
2552                 /* Couldn't read PMKID cache from device */
2553                 return PTR_ERR(pmkids);
2554         }
2555
2556         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2557         if (IS_ERR(pmkids)) {
2558                 /* not found, etc */
2559                 return PTR_ERR(pmkids);
2560         }
2561
2562         return set_device_pmkids(usbdev, pmkids);
2563 }
2564
2565 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2566 {
2567         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2568         struct usbnet *usbdev = priv->usbdev;
2569         struct ndis_80211_pmkid pmkid;
2570
2571         netdev_dbg(usbdev->net, "%s()\n", __func__);
2572
2573         memset(&pmkid, 0, sizeof(pmkid));
2574
2575         pmkid.length = cpu_to_le32(sizeof(pmkid));
2576         pmkid.bssid_info_count = cpu_to_le32(0);
2577
2578         return rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_PMKID), &pmkid, sizeof(pmkid));
2579 }
2580
2581 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2582                                 bool enabled, int timeout)
2583 {
2584         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2585         struct usbnet *usbdev = priv->usbdev;
2586         int power_mode;
2587         __le32 mode;
2588         int ret;
2589
2590         if (priv->device_type != RNDIS_BCM4320B)
2591                 return -ENOTSUPP;
2592
2593         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2594                                 enabled ? "enabled" : "disabled",
2595                                 timeout);
2596
2597         if (enabled)
2598                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2599         else
2600                 power_mode = NDIS_80211_POWER_MODE_CAM;
2601
2602         if (power_mode == priv->power_mode)
2603                 return 0;
2604
2605         priv->power_mode = power_mode;
2606
2607         mode = cpu_to_le32(power_mode);
2608         ret = rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_POWER_MODE), &mode, sizeof(mode));
2609
2610         netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2611                                 __func__, ret);
2612
2613         return ret;
2614 }
2615
2616 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2617                                         struct net_device *dev,
2618                                         s32 rssi_thold, u32 rssi_hyst)
2619 {
2620         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2621
2622         priv->cqm_rssi_thold = rssi_thold;
2623         priv->cqm_rssi_hyst = rssi_hyst;
2624         priv->last_cqm_event_rssi = 0;
2625
2626         return 0;
2627 }
2628
2629 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2630                                            struct ndis_80211_assoc_info *info)
2631 {
2632         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2633         struct ieee80211_channel *channel;
2634         struct ndis_80211_ssid ssid;
2635         struct cfg80211_bss *bss;
2636         s32 signal;
2637         u64 timestamp;
2638         u16 capability;
2639         u32 beacon_period = 0;
2640         __le32 rssi;
2641         u8 ie_buf[34];
2642         int len, ret, ie_len;
2643
2644         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2645         len = sizeof(rssi);
2646         rssi = 0;
2647         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_RSSI), &rssi, &len);
2648         signal = level_to_qual(le32_to_cpu(rssi));
2649
2650         netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2651                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2652                    level_to_qual(le32_to_cpu(rssi)));
2653
2654         /* Get AP capabilities */
2655         if (info) {
2656                 capability = le16_to_cpu(info->resp_ie.capa);
2657         } else {
2658                 /* Set atleast ESS/IBSS capability */
2659                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2660                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2661         }
2662
2663         /* Get channel and beacon interval */
2664         channel = get_current_channel(usbdev, &beacon_period);
2665         if (!channel) {
2666                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2667                                         __func__);
2668                 return;
2669         }
2670
2671         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2672         len = sizeof(ssid);
2673         memset(&ssid, 0, sizeof(ssid));
2674         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_SSID), &ssid, &len);
2675         netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2676                                 "'%.32s'\n", __func__, ret,
2677                                 le32_to_cpu(ssid.length), ssid.essid);
2678
2679         if (le32_to_cpu(ssid.length) > 32)
2680                 ssid.length = cpu_to_le32(32);
2681
2682         ie_buf[0] = WLAN_EID_SSID;
2683         ie_buf[1] = le32_to_cpu(ssid.length);
2684         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2685
2686         ie_len = le32_to_cpu(ssid.length) + 2;
2687
2688         /* no tsf */
2689         timestamp = 0;
2690
2691         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2692                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2693                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2694                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2695                 ssid.essid, signal);
2696
2697         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2698                 timestamp, capability, beacon_period, ie_buf, ie_len,
2699                 signal, GFP_KERNEL);
2700         cfg80211_put_bss(bss);
2701 }
2702
2703 /*
2704  * workers, indication handlers, device poller
2705  */
2706 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2707 {
2708         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2709         struct ndis_80211_assoc_info *info = NULL;
2710         u8 bssid[ETH_ALEN];
2711         unsigned int resp_ie_len, req_ie_len;
2712         unsigned int offset;
2713         u8 *req_ie, *resp_ie;
2714         int ret;
2715         bool roamed = false;
2716         bool match_bss;
2717
2718         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2719                 /* received media connect indication while connected, either
2720                  * device reassociated with same AP or roamed to new. */
2721                 roamed = true;
2722         }
2723
2724         req_ie_len = 0;
2725         resp_ie_len = 0;
2726         req_ie = NULL;
2727         resp_ie = NULL;
2728
2729         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2730                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2731                 if (!info) {
2732                         /* No memory? Try resume work later */
2733                         set_bit(WORK_LINK_UP, &priv->work_pending);
2734                         queue_work(priv->workqueue, &priv->work);
2735                         return;
2736                 }
2737
2738                 /* Get association info IEs from device. */
2739                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2740                 if (!ret) {
2741                         req_ie_len = le32_to_cpu(info->req_ie_length);
2742                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2743                                 req_ie_len = CONTROL_BUFFER_SIZE;
2744                         if (req_ie_len != 0) {
2745                                 offset = le32_to_cpu(info->offset_req_ies);
2746
2747                                 if (offset > CONTROL_BUFFER_SIZE)
2748                                         offset = CONTROL_BUFFER_SIZE;
2749
2750                                 req_ie = (u8 *)info + offset;
2751
2752                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2753                                         req_ie_len =
2754                                                 CONTROL_BUFFER_SIZE - offset;
2755                         }
2756
2757                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2758                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2759                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2760                         if (resp_ie_len != 0) {
2761                                 offset = le32_to_cpu(info->offset_resp_ies);
2762
2763                                 if (offset > CONTROL_BUFFER_SIZE)
2764                                         offset = CONTROL_BUFFER_SIZE;
2765
2766                                 resp_ie = (u8 *)info + offset;
2767
2768                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2769                                         resp_ie_len =
2770                                                 CONTROL_BUFFER_SIZE - offset;
2771                         }
2772                 } else {
2773                         /* Since rndis_wlan_craft_connected_bss() might use info
2774                          * later and expects info to contain valid data if
2775                          * non-null, free info and set NULL here.
2776                          */
2777                         kfree(info);
2778                         info = NULL;
2779                 }
2780         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2781                 return;
2782
2783         ret = get_bssid(usbdev, bssid);
2784         if (ret < 0)
2785                 memset(bssid, 0, sizeof(bssid));
2786
2787         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2788                    bssid, roamed ? " roamed" : "");
2789
2790         /* Internal bss list in device should contain at least the currently
2791          * connected bss and we can get it to cfg80211 with
2792          * rndis_check_bssid_list().
2793          *
2794          * NDIS spec says: "If the device is associated, but the associated
2795          *  BSSID is not in its BSSID scan list, then the driver must add an
2796          *  entry for the BSSID at the end of the data that it returns in
2797          *  response to query of OID_802_11_BSSID_LIST."
2798          *
2799          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2800          */
2801         match_bss = false;
2802         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2803
2804         if (!is_zero_ether_addr(bssid) && !match_bss) {
2805                 /* Couldn't get bss from device, we need to manually craft bss
2806                  * for cfg80211.
2807                  */
2808                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2809         }
2810
2811         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2812                 if (!roamed)
2813                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2814                                                 req_ie_len, resp_ie,
2815                                                 resp_ie_len, 0, GFP_KERNEL);
2816                 else
2817                         cfg80211_roamed(usbdev->net,
2818                                         get_current_channel(usbdev, NULL),
2819                                         bssid, req_ie, req_ie_len,
2820                                         resp_ie, resp_ie_len, GFP_KERNEL);
2821         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2822                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2823
2824         if (info != NULL)
2825                 kfree(info);
2826
2827         priv->connected = true;
2828         memcpy(priv->bssid, bssid, ETH_ALEN);
2829
2830         usbnet_resume_rx(usbdev);
2831         netif_carrier_on(usbdev->net);
2832 }
2833
2834 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2835 {
2836         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2837
2838         if (priv->connected) {
2839                 priv->connected = false;
2840                 memset(priv->bssid, 0, ETH_ALEN);
2841
2842                 deauthenticate(usbdev);
2843
2844                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2845         }
2846
2847         netif_carrier_off(usbdev->net);
2848 }
2849
2850 static void rndis_wlan_worker(struct work_struct *work)
2851 {
2852         struct rndis_wlan_private *priv =
2853                 container_of(work, struct rndis_wlan_private, work);
2854         struct usbnet *usbdev = priv->usbdev;
2855
2856         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2857                 rndis_wlan_do_link_up_work(usbdev);
2858
2859         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2860                 rndis_wlan_do_link_down_work(usbdev);
2861
2862         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2863                 set_multicast_list(usbdev);
2864 }
2865
2866 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2867 {
2868         struct usbnet *usbdev = netdev_priv(dev);
2869         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2870
2871         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2872                 return;
2873
2874         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2875         queue_work(priv->workqueue, &priv->work);
2876 }
2877
2878 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2879                                 struct ndis_80211_status_indication *indication,
2880                                 int len)
2881 {
2882         u8 *buf;
2883         const char *type;
2884         int flags, buflen, key_id;
2885         bool pairwise_error, group_error;
2886         struct ndis_80211_auth_request *auth_req;
2887         enum nl80211_key_type key_type;
2888
2889         /* must have at least one array entry */
2890         if (len < offsetof(struct ndis_80211_status_indication, u) +
2891                                 sizeof(struct ndis_80211_auth_request)) {
2892                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2893                             len);
2894                 return;
2895         }
2896
2897         buf = (void *)&indication->u.auth_request[0];
2898         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2899
2900         while (buflen >= sizeof(*auth_req)) {
2901                 auth_req = (void *)buf;
2902                 type = "unknown";
2903                 flags = le32_to_cpu(auth_req->flags);
2904                 pairwise_error = false;
2905                 group_error = false;
2906
2907                 if (flags & 0x1)
2908                         type = "reauth request";
2909                 if (flags & 0x2)
2910                         type = "key update request";
2911                 if (flags & 0x6) {
2912                         pairwise_error = true;
2913                         type = "pairwise_error";
2914                 }
2915                 if (flags & 0xe) {
2916                         group_error = true;
2917                         type = "group_error";
2918                 }
2919
2920                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2921                             type, le32_to_cpu(auth_req->flags));
2922
2923                 if (pairwise_error) {
2924                         key_type = NL80211_KEYTYPE_PAIRWISE;
2925                         key_id = -1;
2926
2927                         cfg80211_michael_mic_failure(usbdev->net,
2928                                                         auth_req->bssid,
2929                                                         key_type, key_id, NULL,
2930                                                         GFP_KERNEL);
2931                 }
2932
2933                 if (group_error) {
2934                         key_type = NL80211_KEYTYPE_GROUP;
2935                         key_id = -1;
2936
2937                         cfg80211_michael_mic_failure(usbdev->net,
2938                                                         auth_req->bssid,
2939                                                         key_type, key_id, NULL,
2940                                                         GFP_KERNEL);
2941                 }
2942
2943                 buflen -= le32_to_cpu(auth_req->length);
2944                 buf += le32_to_cpu(auth_req->length);
2945         }
2946 }
2947
2948 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2949                                 struct ndis_80211_status_indication *indication,
2950                                 int len)
2951 {
2952         struct ndis_80211_pmkid_cand_list *cand_list;
2953         int list_len, expected_len, i;
2954
2955         if (len < offsetof(struct ndis_80211_status_indication, u) +
2956                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2957                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2958                             len);
2959                 return;
2960         }
2961
2962         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2963                         sizeof(struct ndis_80211_pmkid_candidate);
2964         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2965                         offsetof(struct ndis_80211_status_indication, u);
2966
2967         if (len < expected_len) {
2968                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2969                             len, expected_len);
2970                 return;
2971         }
2972
2973         cand_list = &indication->u.cand_list;
2974
2975         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2976                     le32_to_cpu(cand_list->version),
2977                     le32_to_cpu(cand_list->num_candidates));
2978
2979         if (le32_to_cpu(cand_list->version) != 1)
2980                 return;
2981
2982         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2983                 struct ndis_80211_pmkid_candidate *cand =
2984                                                 &cand_list->candidate_list[i];
2985                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
2986
2987                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
2988                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
2989
2990                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
2991                                                 preauth, GFP_ATOMIC);
2992         }
2993 }
2994
2995 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
2996                         struct rndis_indicate *msg, int buflen)
2997 {
2998         struct ndis_80211_status_indication *indication;
2999         unsigned int len, offset;
3000
3001         offset = offsetof(struct rndis_indicate, status) +
3002                         le32_to_cpu(msg->offset);
3003         len = le32_to_cpu(msg->length);
3004
3005         if (len < 8) {
3006                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3007                             len);
3008                 return;
3009         }
3010
3011         if (len > buflen || offset > buflen || offset + len > buflen) {
3012                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3013                             offset + len, buflen);
3014                 return;
3015         }
3016
3017         indication = (void *)((u8 *)msg + offset);
3018
3019         switch (le32_to_cpu(indication->status_type)) {
3020         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3021                 netdev_info(usbdev->net, "radio state indication: %i\n",
3022                             le32_to_cpu(indication->u.radio_status));
3023                 return;
3024
3025         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3026                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3027                             le32_to_cpu(indication->u.media_stream_mode));
3028                 return;
3029
3030         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3031                 rndis_wlan_auth_indication(usbdev, indication, len);
3032                 return;
3033
3034         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3035                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3036                 return;
3037
3038         default:
3039                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3040                             le32_to_cpu(indication->status_type));
3041         }
3042 }
3043
3044 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3045 {
3046         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3047         struct rndis_indicate *msg = ind;
3048
3049         switch (msg->status) {
3050         case cpu_to_le32(RNDIS_STATUS_MEDIA_CONNECT):
3051                 if (priv->current_command_oid == cpu_to_le32(OID_802_11_ADD_KEY)) {
3052                         /* OID_802_11_ADD_KEY causes sometimes extra
3053                          * "media connect" indications which confuses driver
3054                          * and userspace to think that device is
3055                          * roaming/reassociating when it isn't.
3056                          */
3057                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3058                         return;
3059                 }
3060
3061                 usbnet_pause_rx(usbdev);
3062
3063                 netdev_info(usbdev->net, "media connect\n");
3064
3065                 /* queue work to avoid recursive calls into rndis_command */
3066                 set_bit(WORK_LINK_UP, &priv->work_pending);
3067                 queue_work(priv->workqueue, &priv->work);
3068                 break;
3069
3070         case cpu_to_le32(RNDIS_STATUS_MEDIA_DISCONNECT):
3071                 netdev_info(usbdev->net, "media disconnect\n");
3072
3073                 /* queue work to avoid recursive calls into rndis_command */
3074                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3075                 queue_work(priv->workqueue, &priv->work);
3076                 break;
3077
3078         case cpu_to_le32(RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION):
3079                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3080                 break;
3081
3082         default:
3083                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3084                             le32_to_cpu(msg->status));
3085                 break;
3086         }
3087 }
3088
3089 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3090 {
3091         struct {
3092                 __le32  num_items;
3093                 __le32  items[8];
3094         } networks_supported;
3095         struct ndis_80211_capability *caps;
3096         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3097         int len, retval, i, n;
3098         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3099
3100         /* determine supported modes */
3101         len = sizeof(networks_supported);
3102         retval = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_NETWORK_TYPES_SUPPORTED),
3103                                                 &networks_supported, &len);
3104         if (retval >= 0) {
3105                 n = le32_to_cpu(networks_supported.num_items);
3106                 if (n > 8)
3107                         n = 8;
3108                 for (i = 0; i < n; i++) {
3109                         switch (le32_to_cpu(networks_supported.items[i])) {
3110                         case NDIS_80211_TYPE_FREQ_HOP:
3111                         case NDIS_80211_TYPE_DIRECT_SEQ:
3112                                 priv->caps |= CAP_MODE_80211B;
3113                                 break;
3114                         case NDIS_80211_TYPE_OFDM_A:
3115                                 priv->caps |= CAP_MODE_80211A;
3116                                 break;
3117                         case NDIS_80211_TYPE_OFDM_G:
3118                                 priv->caps |= CAP_MODE_80211G;
3119                                 break;
3120                         }
3121                 }
3122         }
3123
3124         /* get device 802.11 capabilities, number of PMKIDs */
3125         caps = (struct ndis_80211_capability *)caps_buf;
3126         len = sizeof(caps_buf);
3127         retval = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_CAPABILITY), caps, &len);
3128         if (retval >= 0) {
3129                 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3130                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3131                                 le32_to_cpu(caps->length),
3132                                 le32_to_cpu(caps->version),
3133                                 le32_to_cpu(caps->num_pmkids),
3134                                 le32_to_cpu(caps->num_auth_encr_pair));
3135                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3136         } else
3137                 wiphy->max_num_pmkids = 0;
3138
3139         return retval;
3140 }
3141
3142 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3143 {
3144         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3145         enum nl80211_cqm_rssi_threshold_event event;
3146         int thold, hyst, last_event;
3147
3148         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3149                 return;
3150         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3151                 return;
3152
3153         last_event = priv->last_cqm_event_rssi;
3154         thold = priv->cqm_rssi_thold;
3155         hyst = priv->cqm_rssi_hyst;
3156
3157         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3158                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3159         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3160                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3161         else
3162                 return;
3163
3164         priv->last_cqm_event_rssi = rssi;
3165         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3166 }
3167
3168 #define DEVICE_POLLER_JIFFIES (HZ)
3169 static void rndis_device_poller(struct work_struct *work)
3170 {
3171         struct rndis_wlan_private *priv =
3172                 container_of(work, struct rndis_wlan_private,
3173                                                         dev_poller_work.work);
3174         struct usbnet *usbdev = priv->usbdev;
3175         __le32 rssi, tmp;
3176         int len, ret, j;
3177         int update_jiffies = DEVICE_POLLER_JIFFIES;
3178         void *buf;
3179
3180         /* Only check/do workaround when connected. Calling is_associated()
3181          * also polls device with rndis_command() and catches for media link
3182          * indications.
3183          */
3184         if (!is_associated(usbdev)) {
3185                 /* Workaround bad scanning in BCM4320a devices with active
3186                  * background scanning when not associated.
3187                  */
3188                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3189                     !priv->scan_request) {
3190                         /* Get previous scan results */
3191                         rndis_check_bssid_list(usbdev, NULL, NULL);
3192
3193                         /* Initiate new scan */
3194                         rndis_start_bssid_list_scan(usbdev);
3195                 }
3196
3197                 goto end;
3198         }
3199
3200         len = sizeof(rssi);
3201         ret = rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_RSSI), &rssi, &len);
3202         if (ret == 0) {
3203                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3204                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3205         }
3206
3207         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3208                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3209
3210         /* Workaround transfer stalls on poor quality links.
3211          * TODO: find right way to fix these stalls (as stalls do not happen
3212          * with ndiswrapper/windows driver). */
3213         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3214                 /* Decrease stats worker interval to catch stalls.
3215                  * faster. Faster than 400-500ms causes packet loss,
3216                  * Slower doesn't catch stalls fast enough.
3217                  */
3218                 j = msecs_to_jiffies(priv->param_workaround_interval);
3219                 if (j > DEVICE_POLLER_JIFFIES)
3220                         j = DEVICE_POLLER_JIFFIES;
3221                 else if (j <= 0)
3222                         j = 1;
3223                 update_jiffies = j;
3224
3225                 /* Send scan OID. Use of both OIDs is required to get device
3226                  * working.
3227                  */
3228                 tmp = cpu_to_le32(1);
3229                 rndis_set_oid(usbdev, cpu_to_le32(OID_802_11_BSSID_LIST_SCAN), &tmp,
3230                                                                 sizeof(tmp));
3231
3232                 len = CONTROL_BUFFER_SIZE;
3233                 buf = kmalloc(len, GFP_KERNEL);
3234                 if (!buf)
3235                         goto end;
3236
3237                 rndis_query_oid(usbdev, cpu_to_le32(OID_802_11_BSSID_LIST), buf, &len);
3238                 kfree(buf);
3239         }
3240
3241 end:
3242         if (update_jiffies >= HZ)
3243                 update_jiffies = round_jiffies_relative(update_jiffies);
3244         else {
3245                 j = round_jiffies_relative(update_jiffies);
3246                 if (abs(j - update_jiffies) <= 10)
3247                         update_jiffies = j;
3248         }
3249
3250         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3251                                                                 update_jiffies);
3252 }
3253
3254 /*
3255  * driver/device initialization
3256  */
3257 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3258 {
3259         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3260
3261         priv->device_type = device_type;
3262
3263         priv->param_country[0] = modparam_country[0];
3264         priv->param_country[1] = modparam_country[1];
3265         priv->param_country[2] = 0;
3266         priv->param_frameburst   = modparam_frameburst;
3267         priv->param_afterburner  = modparam_afterburner;
3268         priv->param_power_save   = modparam_power_save;
3269         priv->param_power_output = modparam_power_output;
3270         priv->param_roamtrigger  = modparam_roamtrigger;
3271         priv->param_roamdelta    = modparam_roamdelta;
3272
3273         priv->param_country[0] = toupper(priv->param_country[0]);
3274         priv->param_country[1] = toupper(priv->param_country[1]);
3275         /* doesn't support EU as country code, use FI instead */
3276         if (!strcmp(priv->param_country, "EU"))
3277                 strcpy(priv->param_country, "FI");
3278
3279         if (priv->param_power_save < 0)
3280                 priv->param_power_save = 0;
3281         else if (priv->param_power_save > 2)
3282                 priv->param_power_save = 2;
3283
3284         if (priv->param_power_output < 0)
3285                 priv->param_power_output = 0;
3286         else if (priv->param_power_output > 3)
3287                 priv->param_power_output = 3;
3288
3289         if (priv->param_roamtrigger < -80)
3290                 priv->param_roamtrigger = -80;
3291         else if (priv->param_roamtrigger > -60)
3292                 priv->param_roamtrigger = -60;
3293
3294         if (priv->param_roamdelta < 0)
3295                 priv->param_roamdelta = 0;
3296         else if (priv->param_roamdelta > 2)
3297                 priv->param_roamdelta = 2;
3298
3299         if (modparam_workaround_interval < 0)
3300                 priv->param_workaround_interval = 500;
3301         else
3302                 priv->param_workaround_interval = modparam_workaround_interval;
3303 }
3304
3305 static int unknown_early_init(struct usbnet *usbdev)
3306 {
3307         /* copy module parameters for unknown so that iwconfig reports txpower
3308          * and workaround parameter is copied to private structure correctly.
3309          */
3310         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3311
3312         /* This is unknown device, so do not try set configuration parameters.
3313          */
3314
3315         return 0;
3316 }
3317
3318 static int bcm4320a_early_init(struct usbnet *usbdev)
3319 {
3320         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3321          * and workaround parameter is copied to private structure correctly.
3322          */
3323         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3324
3325         /* bcm4320a doesn't handle configuration parameters well. Try
3326          * set any and you get partially zeroed mac and broken device.
3327          */
3328
3329         return 0;
3330 }
3331
3332 static int bcm4320b_early_init(struct usbnet *usbdev)
3333 {
3334         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3335         char buf[8];
3336
3337         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3338
3339         /* Early initialization settings, setting these won't have effect
3340          * if called after generic_rndis_bind().
3341          */
3342
3343         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3344         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3345                                         priv->param_frameburst ? "1" : "0");
3346         rndis_set_config_parameter_str(usbdev, "Afterburner",
3347                                         priv->param_afterburner ? "1" : "0");
3348         sprintf(buf, "%d", priv->param_power_save);
3349         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3350         sprintf(buf, "%d", priv->param_power_output);
3351         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3352         sprintf(buf, "%d", priv->param_roamtrigger);
3353         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3354         sprintf(buf, "%d", priv->param_roamdelta);
3355         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3356
3357         return 0;
3358 }
3359
3360 /* same as rndis_netdev_ops but with local multicast handler */
3361 static const struct net_device_ops rndis_wlan_netdev_ops = {
3362         .ndo_open               = usbnet_open,
3363         .ndo_stop               = usbnet_stop,
3364         .ndo_start_xmit         = usbnet_start_xmit,
3365         .ndo_tx_timeout         = usbnet_tx_timeout,
3366         .ndo_set_mac_address    = eth_mac_addr,
3367         .ndo_validate_addr      = eth_validate_addr,
3368         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3369 };
3370
3371 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3372 {
3373         struct wiphy *wiphy;
3374         struct rndis_wlan_private *priv;
3375         int retval, len;
3376         __le32 tmp;
3377
3378         /* allocate wiphy and rndis private data
3379          * NOTE: We only support a single virtual interface, so wiphy
3380          * and wireless_dev are somewhat synonymous for this device.
3381          */
3382         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3383         if (!wiphy)
3384                 return -ENOMEM;
3385
3386         priv = wiphy_priv(wiphy);
3387         usbdev->net->ieee80211_ptr = &priv->wdev;
3388         priv->wdev.wiphy = wiphy;
3389         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3390
3391         /* These have to be initialized before calling generic_rndis_bind().
3392          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3393          */
3394         usbdev->driver_priv = priv;
3395         priv->usbdev = usbdev;
3396
3397         mutex_init(&priv->command_lock);
3398
3399         /* because rndis_command() sleeps we need to use workqueue */
3400         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3401         INIT_WORK(&priv->work, rndis_wlan_worker);
3402         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3403         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3404
3405         /* try bind rndis_host */
3406         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3407         if (retval < 0)
3408                 goto fail;
3409
3410         /* generic_rndis_bind set packet filter to multicast_all+
3411          * promisc mode which doesn't work well for our devices (device
3412          * picks up rssi to closest station instead of to access point).
3413          *
3414          * rndis_host wants to avoid all OID as much as possible
3415          * so do promisc/multicast handling in rndis_wlan.
3416          */
3417         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3418
3419         tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3420         retval = rndis_set_oid(usbdev,
3421                                cpu_to_le32(RNDIS_OID_GEN_CURRENT_PACKET_FILTER),
3422                                &tmp, sizeof(tmp));
3423
3424         len = sizeof(tmp);
3425         retval = rndis_query_oid(usbdev,
3426                                  cpu_to_le32(OID_802_3_MAXIMUM_LIST_SIZE),
3427                                  &tmp, &len);
3428         priv->multicast_size = le32_to_cpu(tmp);
3429         if (retval < 0 || priv->multicast_size < 0)
3430                 priv->multicast_size = 0;
3431         if (priv->multicast_size > 0)
3432                 usbdev->net->flags |= IFF_MULTICAST;
3433         else
3434                 usbdev->net->flags &= ~IFF_MULTICAST;
3435
3436         /* fill-out wiphy structure and register w/ cfg80211 */
3437         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3438         wiphy->privid = rndis_wiphy_privid;
3439         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3440                                         | BIT(NL80211_IFTYPE_ADHOC);
3441         wiphy->max_scan_ssids = 1;
3442
3443         /* TODO: fill-out band/encr information based on priv->caps */
3444         rndis_wlan_get_caps(usbdev, wiphy);
3445
3446         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3447         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3448         priv->band.channels = priv->channels;
3449         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3450         priv->band.bitrates = priv->rates;
3451         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3452         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3453         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3454
3455         memcpy(priv->cipher_suites, rndis_cipher_suites,
3456                                                 sizeof(rndis_cipher_suites));
3457         wiphy->cipher_suites = priv->cipher_suites;
3458         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3459
3460         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3461
3462         if (wiphy_register(wiphy)) {
3463                 retval = -ENODEV;
3464                 goto fail;
3465         }
3466
3467         set_default_iw_params(usbdev);
3468
3469         priv->power_mode = -1;
3470
3471         /* set default rts/frag */
3472         rndis_set_wiphy_params(wiphy,
3473                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3474
3475         /* turn radio off on init */
3476         priv->radio_on = false;
3477         disassociate(usbdev, false);
3478         netif_carrier_off(usbdev->net);
3479
3480         return 0;
3481
3482 fail:
3483         cancel_delayed_work_sync(&priv->dev_poller_work);
3484         cancel_delayed_work_sync(&priv->scan_work);
3485         cancel_work_sync(&priv->work);
3486         flush_workqueue(priv->workqueue);
3487         destroy_workqueue(priv->workqueue);
3488
3489         wiphy_free(wiphy);
3490         return retval;
3491 }
3492
3493 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3494 {
3495         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3496
3497         /* turn radio off */
3498         disassociate(usbdev, false);
3499
3500         cancel_delayed_work_sync(&priv->dev_poller_work);
3501         cancel_delayed_work_sync(&priv->scan_work);
3502         cancel_work_sync(&priv->work);
3503         flush_workqueue(priv->workqueue);
3504         destroy_workqueue(priv->workqueue);
3505
3506         rndis_unbind(usbdev, intf);
3507
3508         wiphy_unregister(priv->wdev.wiphy);
3509         wiphy_free(priv->wdev.wiphy);
3510 }
3511
3512 static int rndis_wlan_reset(struct usbnet *usbdev)
3513 {
3514         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3515         int retval;
3516
3517         netdev_dbg(usbdev->net, "%s()\n", __func__);
3518
3519         retval = rndis_reset(usbdev);
3520         if (retval)
3521                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3522
3523         /* rndis_reset cleared multicast list, so restore here.
3524            (set_multicast_list() also turns on current packet filter) */
3525         set_multicast_list(usbdev);
3526
3527         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3528                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3529
3530         return deauthenticate(usbdev);
3531 }
3532
3533 static int rndis_wlan_stop(struct usbnet *usbdev)
3534 {
3535         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3536         int retval;
3537         __le32 filter;
3538
3539         netdev_dbg(usbdev->net, "%s()\n", __func__);
3540
3541         retval = disassociate(usbdev, false);
3542
3543         priv->work_pending = 0;
3544         cancel_delayed_work_sync(&priv->dev_poller_work);
3545         cancel_delayed_work_sync(&priv->scan_work);
3546         cancel_work_sync(&priv->work);
3547         flush_workqueue(priv->workqueue);
3548
3549         if (priv->scan_request) {
3550                 cfg80211_scan_done(priv->scan_request, true);
3551                 priv->scan_request = NULL;
3552         }
3553
3554         /* Set current packet filter zero to block receiving data packets from
3555            device. */
3556         filter = 0;
3557         rndis_set_oid(usbdev, cpu_to_le32(RNDIS_OID_GEN_CURRENT_PACKET_FILTER), &filter,
3558                                                                 sizeof(filter));
3559
3560         return retval;
3561 }
3562
3563 static const struct driver_info bcm4320b_info = {
3564         .description =  "Wireless RNDIS device, BCM4320b based",
3565         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3566                                 FLAG_AVOID_UNLINK_URBS,
3567         .bind =         rndis_wlan_bind,
3568         .unbind =       rndis_wlan_unbind,
3569         .status =       rndis_status,
3570         .rx_fixup =     rndis_rx_fixup,
3571         .tx_fixup =     rndis_tx_fixup,
3572         .reset =        rndis_wlan_reset,
3573         .stop =         rndis_wlan_stop,
3574         .early_init =   bcm4320b_early_init,
3575         .indication =   rndis_wlan_indication,
3576 };
3577
3578 static const struct driver_info bcm4320a_info = {
3579         .description =  "Wireless RNDIS device, BCM4320a based",
3580         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3581                                 FLAG_AVOID_UNLINK_URBS,
3582         .bind =         rndis_wlan_bind,
3583         .unbind =       rndis_wlan_unbind,
3584         .status =       rndis_status,
3585         .rx_fixup =     rndis_rx_fixup,
3586         .tx_fixup =     rndis_tx_fixup,
3587         .reset =        rndis_wlan_reset,
3588         .stop =         rndis_wlan_stop,
3589         .early_init =   bcm4320a_early_init,
3590         .indication =   rndis_wlan_indication,
3591 };
3592
3593 static const struct driver_info rndis_wlan_info = {
3594         .description =  "Wireless RNDIS device",
3595         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3596                                 FLAG_AVOID_UNLINK_URBS,
3597         .bind =         rndis_wlan_bind,
3598         .unbind =       rndis_wlan_unbind,
3599         .status =       rndis_status,
3600         .rx_fixup =     rndis_rx_fixup,
3601         .tx_fixup =     rndis_tx_fixup,
3602         .reset =        rndis_wlan_reset,
3603         .stop =         rndis_wlan_stop,
3604         .early_init =   unknown_early_init,
3605         .indication =   rndis_wlan_indication,
3606 };
3607
3608 /*-------------------------------------------------------------------------*/
3609
3610 static const struct usb_device_id products [] = {
3611 #define RNDIS_MASTER_INTERFACE \
3612         .bInterfaceClass        = USB_CLASS_COMM, \
3613         .bInterfaceSubClass     = 2 /* ACM */, \
3614         .bInterfaceProtocol     = 0x0ff
3615
3616 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3617  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3618  */
3619 {
3620         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3621                           | USB_DEVICE_ID_MATCH_DEVICE,
3622         .idVendor               = 0x0411,
3623         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3624         RNDIS_MASTER_INTERFACE,
3625         .driver_info            = (unsigned long) &bcm4320b_info,
3626 }, {
3627         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3628                           | USB_DEVICE_ID_MATCH_DEVICE,
3629         .idVendor               = 0x0baf,
3630         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3631         RNDIS_MASTER_INTERFACE,
3632         .driver_info            = (unsigned long) &bcm4320b_info,
3633 }, {
3634         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3635                           | USB_DEVICE_ID_MATCH_DEVICE,
3636         .idVendor               = 0x050d,
3637         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3638         RNDIS_MASTER_INTERFACE,
3639         .driver_info            = (unsigned long) &bcm4320b_info,
3640 }, {
3641         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3642                           | USB_DEVICE_ID_MATCH_DEVICE,
3643         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3644         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3645         RNDIS_MASTER_INTERFACE,
3646         .driver_info            = (unsigned long) &bcm4320b_info,
3647 }, {
3648         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3649                           | USB_DEVICE_ID_MATCH_DEVICE,
3650         .idVendor               = 0x13b1,
3651         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3652         RNDIS_MASTER_INTERFACE,
3653         .driver_info            = (unsigned long) &bcm4320b_info,
3654 }, {
3655         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3656                           | USB_DEVICE_ID_MATCH_DEVICE,
3657         .idVendor               = 0x13b1,
3658         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3659         RNDIS_MASTER_INTERFACE,
3660         .driver_info            = (unsigned long) &bcm4320b_info,
3661 }, {
3662         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3663                           | USB_DEVICE_ID_MATCH_DEVICE,
3664         .idVendor               = 0x0b05,
3665         .idProduct              = 0x1717,       /* Asus WL169gE */
3666         RNDIS_MASTER_INTERFACE,
3667         .driver_info            = (unsigned long) &bcm4320b_info,
3668 }, {
3669         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3670                           | USB_DEVICE_ID_MATCH_DEVICE,
3671         .idVendor               = 0x0a5c,
3672         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3673         RNDIS_MASTER_INTERFACE,
3674         .driver_info            = (unsigned long) &bcm4320b_info,
3675 }, {
3676         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3677                           | USB_DEVICE_ID_MATCH_DEVICE,
3678         .idVendor               = 0x1690,
3679         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3680         RNDIS_MASTER_INTERFACE,
3681         .driver_info            = (unsigned long) &bcm4320b_info,
3682 },
3683 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3684  * parameters available, hardware probably contain older firmware version with
3685  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3686  */
3687 {
3688         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3689                           | USB_DEVICE_ID_MATCH_DEVICE,
3690         .idVendor               = 0x13b1,
3691         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3692         RNDIS_MASTER_INTERFACE,
3693         .driver_info            = (unsigned long) &bcm4320a_info,
3694 }, {
3695         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3696                           | USB_DEVICE_ID_MATCH_DEVICE,
3697         .idVendor               = 0x0baf,
3698         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3699         RNDIS_MASTER_INTERFACE,
3700         .driver_info            = (unsigned long) &bcm4320a_info,
3701 }, {
3702         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3703                           | USB_DEVICE_ID_MATCH_DEVICE,
3704         .idVendor               = 0x0411,
3705         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3706         RNDIS_MASTER_INTERFACE,
3707         .driver_info            = (unsigned long) &bcm4320a_info,
3708 },
3709 /* Generic Wireless RNDIS devices that we don't have exact
3710  * idVendor/idProduct/chip yet.
3711  */
3712 {
3713         /* RNDIS is MSFT's un-official variant of CDC ACM */
3714         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3715         .driver_info = (unsigned long) &rndis_wlan_info,
3716 }, {
3717         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3718         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3719         .driver_info = (unsigned long) &rndis_wlan_info,
3720 },
3721         { },            // END
3722 };
3723 MODULE_DEVICE_TABLE(usb, products);
3724
3725 static struct usb_driver rndis_wlan_driver = {
3726         .name =         "rndis_wlan",
3727         .id_table =     products,
3728         .probe =        usbnet_probe,
3729         .disconnect =   usbnet_disconnect,
3730         .suspend =      usbnet_suspend,
3731         .resume =       usbnet_resume,
3732 };
3733
3734 module_usb_driver(rndis_wlan_driver);
3735
3736 MODULE_AUTHOR("Bjorge Dijkstra");
3737 MODULE_AUTHOR("Jussi Kivilinna");
3738 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3739 MODULE_LICENSE("GPL");
3740