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