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