Pileus Git - ~andy/linux/blob - drivers/net/wireless/rndis_wlan.c

   1 /*
   2  * Driver for RNDIS based wireless USB devices.
   3  *
   4  * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
   5  * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  *  Portions of this file are based on NDISwrapper project,
  22  *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
  23  *  http://ndiswrapper.sourceforge.net/
  24  */
  25
  26 // #define      DEBUG                   // error path messages, extra info
  27 // #define      VERBOSE                 // more; success messages
  28
  29 #include <linux/module.h>
  30 #include <linux/init.h>
  31 #include <linux/netdevice.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/ethtool.h>
  34 #include <linux/workqueue.h>
  35 #include <linux/mutex.h>
  36 #include <linux/mii.h>
  37 #include <linux/usb.h>
  38 #include <linux/usb/cdc.h>
  39 #include <linux/ieee80211.h>
  40 #include <linux/if_arp.h>
  41 #include <linux/ctype.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/slab.h>
  44 #include <net/cfg80211.h>
  45 #include <linux/usb/usbnet.h>
  46 #include <linux/usb/rndis_host.h>
  47
  48
  49 /* NOTE: All these are settings for Broadcom chipset */
  50 static char modparam_country[4] = "EU";
  51 module_param_string(country, modparam_country, 4, 0444);
  52 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  53
  54 static int modparam_frameburst = 1;
  55 module_param_named(frameburst, modparam_frameburst, int, 0444);
  56 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  57
  58 static int modparam_afterburner = 0;
  59 module_param_named(afterburner, modparam_afterburner, int, 0444);
  60 MODULE_PARM_DESC(afterburner,
  61         "enable afterburner aka '125 High Speed Mode' (default: off)");
  62
  63 static int modparam_power_save = 0;
  64 module_param_named(power_save, modparam_power_save, int, 0444);
  65 MODULE_PARM_DESC(power_save,
  66         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
  67
  68 static int modparam_power_output = 3;
  69 module_param_named(power_output, modparam_power_output, int, 0444);
  70 MODULE_PARM_DESC(power_output,
  71         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  72
  73 static int modparam_roamtrigger = -70;
  74 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  75 MODULE_PARM_DESC(roamtrigger,
  76         "set roaming dBm trigger: -80=optimize for distance, "
  77                                 "-60=bandwidth (default: -70)");
  78
  79 static int modparam_roamdelta = 1;
  80 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  81 MODULE_PARM_DESC(roamdelta,
  82         "set roaming tendency: 0=aggressive, 1=moderate, "
  83                                 "2=conservative (default: moderate)");
  84
  85 static int modparam_workaround_interval;
  86 module_param_named(workaround_interval, modparam_workaround_interval,
  87                                                         int, 0444);
  88 MODULE_PARM_DESC(workaround_interval,
  89         "set stall workaround interval in msecs (0=disabled) (default: 0)");
  90
  91 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
  92 #define WL_NOISE        -96     /* typical noise level in dBm */
  93 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
  94
  95
  96 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
  97  * based on wireless rndis) has default txpower of 13dBm.
  98  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
  99  *  100% : 20 mW ~ 13dBm
 100  *   75% : 15 mW ~ 12dBm
 101  *   50% : 10 mW ~ 10dBm
 102  *   25% :  5 mW ~  7dBm
 103  */
 104 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
 105 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
 106 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
 107 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
 108
 109 /* Known device types */
 110 #define RNDIS_UNKNOWN   0
 111 #define RNDIS_BCM4320A  1
 112 #define RNDIS_BCM4320B  2
 113
 114
 115 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 116  * slightly modified for datatype endianess, etc
 117  */
 118 #define NDIS_802_11_LENGTH_SSID 32
 119 #define NDIS_802_11_LENGTH_RATES 8
 120 #define NDIS_802_11_LENGTH_RATES_EX 16
 121
 122 enum ndis_80211_net_type {
 123         NDIS_80211_TYPE_FREQ_HOP,
 124         NDIS_80211_TYPE_DIRECT_SEQ,
 125         NDIS_80211_TYPE_OFDM_A,
 126         NDIS_80211_TYPE_OFDM_G
 127 };
 128
 129 enum ndis_80211_net_infra {
 130         NDIS_80211_INFRA_ADHOC,
 131         NDIS_80211_INFRA_INFRA,
 132         NDIS_80211_INFRA_AUTO_UNKNOWN
 133 };
 134
 135 enum ndis_80211_auth_mode {
 136         NDIS_80211_AUTH_OPEN,
 137         NDIS_80211_AUTH_SHARED,
 138         NDIS_80211_AUTH_AUTO_SWITCH,
 139         NDIS_80211_AUTH_WPA,
 140         NDIS_80211_AUTH_WPA_PSK,
 141         NDIS_80211_AUTH_WPA_NONE,
 142         NDIS_80211_AUTH_WPA2,
 143         NDIS_80211_AUTH_WPA2_PSK
 144 };
 145
 146 enum ndis_80211_encr_status {
 147         NDIS_80211_ENCR_WEP_ENABLED,
 148         NDIS_80211_ENCR_DISABLED,
 149         NDIS_80211_ENCR_WEP_KEY_ABSENT,
 150         NDIS_80211_ENCR_NOT_SUPPORTED,
 151         NDIS_80211_ENCR_TKIP_ENABLED,
 152         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 153         NDIS_80211_ENCR_CCMP_ENABLED,
 154         NDIS_80211_ENCR_CCMP_KEY_ABSENT
 155 };
 156
 157 enum ndis_80211_priv_filter {
 158         NDIS_80211_PRIV_ACCEPT_ALL,
 159         NDIS_80211_PRIV_8021X_WEP
 160 };
 161
 162 enum ndis_80211_status_type {
 163         NDIS_80211_STATUSTYPE_AUTHENTICATION,
 164         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 165         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 166         NDIS_80211_STATUSTYPE_RADIOSTATE,
 167 };
 168
 169 enum ndis_80211_media_stream_mode {
 170         NDIS_80211_MEDIA_STREAM_OFF,
 171         NDIS_80211_MEDIA_STREAM_ON
 172 };
 173
 174 enum ndis_80211_radio_status {
 175         NDIS_80211_RADIO_STATUS_ON,
 176         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 177         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 178 };
 179
 180 enum ndis_80211_addkey_bits {
 181         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 182         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 183         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 184         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 185 };
 186
 187 enum ndis_80211_addwep_bits {
 188         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 189         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 190 };
 191
 192 enum ndis_80211_power_mode {
 193         NDIS_80211_POWER_MODE_CAM,
 194         NDIS_80211_POWER_MODE_MAX_PSP,
 195         NDIS_80211_POWER_MODE_FAST_PSP,
 196 };
 197
 198 enum ndis_80211_pmkid_cand_list_flag_bits {
 199         NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
 200 };
 201
 202 struct ndis_80211_auth_request {
 203         __le32 length;
 204         u8 bssid[6];
 205         u8 padding[2];
 206         __le32 flags;
 207 } __packed;
 208
 209 struct ndis_80211_pmkid_candidate {
 210         u8 bssid[6];
 211         u8 padding[2];
 212         __le32 flags;
 213 } __packed;
 214
 215 struct ndis_80211_pmkid_cand_list {
 216         __le32 version;
 217         __le32 num_candidates;
 218         struct ndis_80211_pmkid_candidate candidate_list[0];
 219 } __packed;
 220
 221 struct ndis_80211_status_indication {
 222         __le32 status_type;
 223         union {
 224                 __le32                                  media_stream_mode;
 225                 __le32                                  radio_status;
 226                 struct ndis_80211_auth_request          auth_request[0];
 227                 struct ndis_80211_pmkid_cand_list       cand_list;
 228         } u;
 229 } __packed;
 230
 231 struct ndis_80211_ssid {
 232         __le32 length;
 233         u8 essid[NDIS_802_11_LENGTH_SSID];
 234 } __packed;
 235
 236 struct ndis_80211_conf_freq_hop {
 237         __le32 length;
 238         __le32 hop_pattern;
 239         __le32 hop_set;
 240         __le32 dwell_time;
 241 } __packed;
 242
 243 struct ndis_80211_conf {
 244         __le32 length;
 245         __le32 beacon_period;
 246         __le32 atim_window;
 247         __le32 ds_config;
 248         struct ndis_80211_conf_freq_hop fh_config;
 249 } __packed;
 250
 251 struct ndis_80211_bssid_ex {
 252         __le32 length;
 253         u8 mac[6];
 254         u8 padding[2];
 255         struct ndis_80211_ssid ssid;
 256         __le32 privacy;
 257         __le32 rssi;
 258         __le32 net_type;
 259         struct ndis_80211_conf config;
 260         __le32 net_infra;
 261         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 262         __le32 ie_length;
 263         u8 ies[0];
 264 } __packed;
 265
 266 struct ndis_80211_bssid_list_ex {
 267         __le32 num_items;
 268         struct ndis_80211_bssid_ex bssid[0];
 269 } __packed;
 270
 271 struct ndis_80211_fixed_ies {
 272         u8 timestamp[8];
 273         __le16 beacon_interval;
 274         __le16 capabilities;
 275 } __packed;
 276
 277 struct ndis_80211_wep_key {
 278         __le32 size;
 279         __le32 index;
 280         __le32 length;
 281         u8 material[32];
 282 } __packed;
 283
 284 struct ndis_80211_key {
 285         __le32 size;
 286         __le32 index;
 287         __le32 length;
 288         u8 bssid[6];
 289         u8 padding[6];
 290         u8 rsc[8];
 291         u8 material[32];
 292 } __packed;
 293
 294 struct ndis_80211_remove_key {
 295         __le32 size;
 296         __le32 index;
 297         u8 bssid[6];
 298         u8 padding[2];
 299 } __packed;
 300
 301 struct ndis_config_param {
 302         __le32 name_offs;
 303         __le32 name_length;
 304         __le32 type;
 305         __le32 value_offs;
 306         __le32 value_length;
 307 } __packed;
 308
 309 struct ndis_80211_assoc_info {
 310         __le32 length;
 311         __le16 req_ies;
 312         struct req_ie {
 313                 __le16 capa;
 314                 __le16 listen_interval;
 315                 u8 cur_ap_address[6];
 316         } req_ie;
 317         __le32 req_ie_length;
 318         __le32 offset_req_ies;
 319         __le16 resp_ies;
 320         struct resp_ie {
 321                 __le16 capa;
 322                 __le16 status_code;
 323                 __le16 assoc_id;
 324         } resp_ie;
 325         __le32 resp_ie_length;
 326         __le32 offset_resp_ies;
 327 } __packed;
 328
 329 struct ndis_80211_auth_encr_pair {
 330         __le32 auth_mode;
 331         __le32 encr_mode;
 332 } __packed;
 333
 334 struct ndis_80211_capability {
 335         __le32 length;
 336         __le32 version;
 337         __le32 num_pmkids;
 338         __le32 num_auth_encr_pair;
 339         struct ndis_80211_auth_encr_pair auth_encr_pair[0];
 340 } __packed;
 341
 342 struct ndis_80211_bssid_info {
 343         u8 bssid[6];
 344         u8 pmkid[16];
 345 } __packed;
 346
 347 struct ndis_80211_pmkid {
 348         __le32 length;
 349         __le32 bssid_info_count;
 350         struct ndis_80211_bssid_info bssid_info[0];
 351 } __packed;
 352
 353 /*
 354  *  private data
 355  */
 356 #define CAP_MODE_80211A         1
 357 #define CAP_MODE_80211B         2
 358 #define CAP_MODE_80211G         4
 359 #define CAP_MODE_MASK           7
 360
 361 #define WORK_LINK_UP            (1<<0)
 362 #define WORK_LINK_DOWN          (1<<1)
 363 #define WORK_SET_MULTICAST_LIST (1<<2)
 364
 365 #define RNDIS_WLAN_ALG_NONE     0
 366 #define RNDIS_WLAN_ALG_WEP      (1<<0)
 367 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
 368 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
 369
 370 #define RNDIS_WLAN_NUM_KEYS             4
 371 #define RNDIS_WLAN_KEY_MGMT_NONE        0
 372 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 373 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 374
 375 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 376
 377 static const struct ieee80211_channel rndis_channels[] = {
 378         { .center_freq = 2412 },
 379         { .center_freq = 2417 },
 380         { .center_freq = 2422 },
 381         { .center_freq = 2427 },
 382         { .center_freq = 2432 },
 383         { .center_freq = 2437 },
 384         { .center_freq = 2442 },
 385         { .center_freq = 2447 },
 386         { .center_freq = 2452 },
 387         { .center_freq = 2457 },
 388         { .center_freq = 2462 },
 389         { .center_freq = 2467 },
 390         { .center_freq = 2472 },
 391         { .center_freq = 2484 },
 392 };
 393
 394 static const struct ieee80211_rate rndis_rates[] = {
 395         { .bitrate = 10 },
 396         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 397         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 398         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 399         { .bitrate = 60 },
 400         { .bitrate = 90 },
 401         { .bitrate = 120 },
 402         { .bitrate = 180 },
 403         { .bitrate = 240 },
 404         { .bitrate = 360 },
 405         { .bitrate = 480 },
 406         { .bitrate = 540 }
 407 };
 408
 409 static const u32 rndis_cipher_suites[] = {
 410         WLAN_CIPHER_SUITE_WEP40,
 411         WLAN_CIPHER_SUITE_WEP104,
 412         WLAN_CIPHER_SUITE_TKIP,
 413         WLAN_CIPHER_SUITE_CCMP,
 414 };
 415
 416 struct rndis_wlan_encr_key {
 417         int len;
 418         u32 cipher;
 419         u8 material[32];
 420         u8 bssid[ETH_ALEN];
 421         bool pairwise;
 422         bool tx_key;
 423 };
 424
 425 /* RNDIS device private data */
 426 struct rndis_wlan_private {
 427         struct usbnet *usbdev;
 428
 429         struct wireless_dev wdev;
 430
 431         struct cfg80211_scan_request *scan_request;
 432
 433         struct workqueue_struct *workqueue;
 434         struct delayed_work dev_poller_work;
 435         struct delayed_work scan_work;
 436         struct work_struct work;
 437         struct mutex command_lock;
 438         unsigned long work_pending;
 439         int last_qual;
 440         s32 cqm_rssi_thold;
 441         u32 cqm_rssi_hyst;
 442         int last_cqm_event_rssi;
 443
 444         struct ieee80211_supported_band band;
 445         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 446         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 447         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 448
 449         int device_type;
 450         int caps;
 451         int multicast_size;
 452
 453         /* module parameters */
 454         char param_country[4];
 455         int  param_frameburst;
 456         int  param_afterburner;
 457         int  param_power_save;
 458         int  param_power_output;
 459         int  param_roamtrigger;
 460         int  param_roamdelta;
 461         u32  param_workaround_interval;
 462
 463         /* hardware state */
 464         bool radio_on;
 465         int power_mode;
 466         int infra_mode;
 467         bool connected;
 468         u8 bssid[ETH_ALEN];
 469         u32 current_command_oid;
 470
 471         /* encryption stuff */
 472         u8 encr_tx_key_index;
 473         struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
 474         int  wpa_version;
 475
 476         u8 command_buffer[COMMAND_BUFFER_SIZE];
 477 };
 478
 479 /*
 480  * cfg80211 ops
 481  */
 482 static int rndis_change_virtual_intf(struct wiphy *wiphy,
 483                                         struct net_device *dev,
 484                                         enum nl80211_iftype type, u32 *flags,
 485                                         struct vif_params *params);
 486
 487 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
 488                         struct cfg80211_scan_request *request);
 489
 490 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 491
 492 static int rndis_set_tx_power(struct wiphy *wiphy,
 493                               enum nl80211_tx_power_setting type,
 494                               int mbm);
 495 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
 496
 497 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 498                                 struct cfg80211_connect_params *sme);
 499
 500 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 501                                 u16 reason_code);
 502
 503 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 504                                         struct cfg80211_ibss_params *params);
 505
 506 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 507
 508 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
 509         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
 510
 511 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 512                          u8 key_index, bool pairwise, const u8 *mac_addr,
 513                          struct key_params *params);
 514
 515 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 516                          u8 key_index, bool pairwise, const u8 *mac_addr);
 517
 518 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 519                                  u8 key_index, bool unicast, bool multicast);
 520
 521 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 522                                         u8 *mac, struct station_info *sinfo);
 523
 524 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 525                                int idx, u8 *mac, struct station_info *sinfo);
 526
 527 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 528                                 struct cfg80211_pmksa *pmksa);
 529
 530 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 531                                 struct cfg80211_pmksa *pmksa);
 532
 533 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 534
 535 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 536                                 bool enabled, int timeout);
 537
 538 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 539                                         struct net_device *dev,
 540                                         s32 rssi_thold, u32 rssi_hyst);
 541
 542 static const struct cfg80211_ops rndis_config_ops = {
 543         .change_virtual_intf = rndis_change_virtual_intf,
 544         .scan = rndis_scan,
 545         .set_wiphy_params = rndis_set_wiphy_params,
 546         .set_tx_power = rndis_set_tx_power,
 547         .get_tx_power = rndis_get_tx_power,
 548         .connect = rndis_connect,
 549         .disconnect = rndis_disconnect,
 550         .join_ibss = rndis_join_ibss,
 551         .leave_ibss = rndis_leave_ibss,
 552         .set_channel = rndis_set_channel,
 553         .add_key = rndis_add_key,
 554         .del_key = rndis_del_key,
 555         .set_default_key = rndis_set_default_key,
 556         .get_station = rndis_get_station,
 557         .dump_station = rndis_dump_station,
 558         .set_pmksa = rndis_set_pmksa,
 559         .del_pmksa = rndis_del_pmksa,
 560         .flush_pmksa = rndis_flush_pmksa,
 561         .set_power_mgmt = rndis_set_power_mgmt,
 562         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 563 };
 564
 565 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 566
 567
 568 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 569 {
 570         return (struct rndis_wlan_private *)dev->driver_priv;
 571 }
 572
 573 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 574 {
 575         switch (priv->param_power_output) {
 576         default:
 577         case 3:
 578                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 579         case 2:
 580                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 581         case 1:
 582                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 583         case 0:
 584                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 585         }
 586 }
 587
 588 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 589 {
 590         int cipher = priv->encr_keys[idx].cipher;
 591
 592         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 593                 cipher == WLAN_CIPHER_SUITE_TKIP);
 594 }
 595
 596 static int rndis_cipher_to_alg(u32 cipher)
 597 {
 598         switch (cipher) {
 599         default:
 600                 return RNDIS_WLAN_ALG_NONE;
 601         case WLAN_CIPHER_SUITE_WEP40:
 602         case WLAN_CIPHER_SUITE_WEP104:
 603                 return RNDIS_WLAN_ALG_WEP;
 604         case WLAN_CIPHER_SUITE_TKIP:
 605                 return RNDIS_WLAN_ALG_TKIP;
 606         case WLAN_CIPHER_SUITE_CCMP:
 607                 return RNDIS_WLAN_ALG_CCMP;
 608         }
 609 }
 610
 611 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 612 {
 613         switch (akm_suite) {
 614         default:
 615                 return RNDIS_WLAN_KEY_MGMT_NONE;
 616         case WLAN_AKM_SUITE_8021X:
 617                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 618         case WLAN_AKM_SUITE_PSK:
 619                 return RNDIS_WLAN_KEY_MGMT_PSK;
 620         }
 621 }
 622
 623 #ifdef DEBUG
 624 static const char *oid_to_string(u32 oid)
 625 {
 626         switch (oid) {
 627 #define OID_STR(oid) case oid: return(#oid)
 628                 /* from rndis_host.h */
 629                 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 630                 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 631                 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 632                 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 633
 634                 /* from rndis_wlan.c */
 635                 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 636                 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 637
 638                 OID_STR(RNDIS_OID_GEN_XMIT_OK);
 639                 OID_STR(RNDIS_OID_GEN_RCV_OK);
 640                 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 641                 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 642                 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 643
 644                 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
 645                 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
 646                 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
 647
 648                 OID_STR(RNDIS_OID_802_11_BSSID);
 649                 OID_STR(RNDIS_OID_802_11_SSID);
 650                 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
 651                 OID_STR(RNDIS_OID_802_11_ADD_WEP);
 652                 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
 653                 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
 654                 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
 655                 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
 656                 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
 657                 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
 658                 OID_STR(RNDIS_OID_802_11_ADD_KEY);
 659                 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
 660                 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
 661                 OID_STR(RNDIS_OID_802_11_CAPABILITY);
 662                 OID_STR(RNDIS_OID_802_11_PMKID);
 663                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
 664                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
 665                 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
 666                 OID_STR(RNDIS_OID_802_11_RSSI);
 667                 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
 668                 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
 669                 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
 670                 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
 671                 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
 672                 OID_STR(RNDIS_OID_802_11_POWER_MODE);
 673                 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
 674 #undef OID_STR
 675         }
 676
 677         return "?";
 678 }
 679 #else
 680 static const char *oid_to_string(u32 oid)
 681 {
 682         return "?";
 683 }
 684 #endif
 685
 686 /* translate error code */
 687 static int rndis_error_status(__le32 rndis_status)
 688 {
 689         int ret = -EINVAL;
 690         switch (le32_to_cpu(rndis_status)) {
 691         case RNDIS_STATUS_SUCCESS:
 692                 ret = 0;
 693                 break;
 694         case RNDIS_STATUS_FAILURE:
 695         case RNDIS_STATUS_INVALID_DATA:
 696                 ret = -EINVAL;
 697                 break;
 698         case RNDIS_STATUS_NOT_SUPPORTED:
 699                 ret = -EOPNOTSUPP;
 700                 break;
 701         case RNDIS_STATUS_ADAPTER_NOT_READY:
 702         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 703                 ret = -EBUSY;
 704                 break;
 705         }
 706         return ret;
 707 }
 708
 709 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 710 {
 711         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 712         union {
 713                 void                    *buf;
 714                 struct rndis_msg_hdr    *header;
 715                 struct rndis_query      *get;
 716                 struct rndis_query_c    *get_c;
 717         } u;
 718         int ret, buflen;
 719         int resplen, respoffs, copylen;
 720
 721         buflen = *len + sizeof(*u.get);
 722         if (buflen < CONTROL_BUFFER_SIZE)
 723                 buflen = CONTROL_BUFFER_SIZE;
 724
 725         if (buflen > COMMAND_BUFFER_SIZE) {
 726                 u.buf = kmalloc(buflen, GFP_KERNEL);
 727                 if (!u.buf)
 728                         return -ENOMEM;
 729         } else {
 730                 u.buf = priv->command_buffer;
 731         }
 732
 733         mutex_lock(&priv->command_lock);
 734
 735         memset(u.get, 0, sizeof *u.get);
 736         u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 737         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 738         u.get->oid = cpu_to_le32(oid);
 739
 740         priv->current_command_oid = oid;
 741         ret = rndis_command(dev, u.header, buflen);
 742         priv->current_command_oid = 0;
 743         if (ret < 0)
 744                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 745                            __func__, oid_to_string(oid), ret,
 746                            le32_to_cpu(u.get_c->status));
 747
 748         if (ret == 0) {
 749                 resplen = le32_to_cpu(u.get_c->len);
 750                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 751
 752                 if (respoffs > buflen) {
 753                         /* Device returned data offset outside buffer, error. */
 754                         netdev_dbg(dev->net, "%s(%s): received invalid "
 755                                 "data offset: %d > %d\n", __func__,
 756                                 oid_to_string(oid), respoffs, buflen);
 757
 758                         ret = -EINVAL;
 759                         goto exit_unlock;
 760                 }
 761
 762                 if ((resplen + respoffs) > buflen) {
 763                         /* Device would have returned more data if buffer would
 764                          * have been big enough. Copy just the bits that we got.
 765                          */
 766                         copylen = buflen - respoffs;
 767                 } else {
 768                         copylen = resplen;
 769                 }
 770
 771                 if (copylen > *len)
 772                         copylen = *len;
 773
 774                 memcpy(data, u.buf + respoffs, copylen);
 775
 776                 *len = resplen;
 777
 778                 ret = rndis_error_status(u.get_c->status);
 779                 if (ret < 0)
 780                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 781                                    __func__, oid_to_string(oid),
 782                                    le32_to_cpu(u.get_c->status), ret);
 783         }
 784
 785 exit_unlock:
 786         mutex_unlock(&priv->command_lock);
 787
 788         if (u.buf != priv->command_buffer)
 789                 kfree(u.buf);
 790         return ret;
 791 }
 792
 793 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 794                          int len)
 795 {
 796         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 797         union {
 798                 void                    *buf;
 799                 struct rndis_msg_hdr    *header;
 800                 struct rndis_set        *set;
 801                 struct rndis_set_c      *set_c;
 802         } u;
 803         int ret, buflen;
 804
 805         buflen = len + sizeof(*u.set);
 806         if (buflen < CONTROL_BUFFER_SIZE)
 807                 buflen = CONTROL_BUFFER_SIZE;
 808
 809         if (buflen > COMMAND_BUFFER_SIZE) {
 810                 u.buf = kmalloc(buflen, GFP_KERNEL);
 811                 if (!u.buf)
 812                         return -ENOMEM;
 813         } else {
 814                 u.buf = priv->command_buffer;
 815         }
 816
 817         mutex_lock(&priv->command_lock);
 818
 819         memset(u.set, 0, sizeof *u.set);
 820         u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 821         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 822         u.set->oid = cpu_to_le32(oid);
 823         u.set->len = cpu_to_le32(len);
 824         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 825         u.set->handle = cpu_to_le32(0);
 826         memcpy(u.buf + sizeof(*u.set), data, len);
 827
 828         priv->current_command_oid = oid;
 829         ret = rndis_command(dev, u.header, buflen);
 830         priv->current_command_oid = 0;
 831         if (ret < 0)
 832                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 833                            __func__, oid_to_string(oid), ret,
 834                            le32_to_cpu(u.set_c->status));
 835
 836         if (ret == 0) {
 837                 ret = rndis_error_status(u.set_c->status);
 838
 839                 if (ret < 0)
 840                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 841                                    __func__, oid_to_string(oid),
 842                                    le32_to_cpu(u.set_c->status), ret);
 843         }
 844
 845         mutex_unlock(&priv->command_lock);
 846
 847         if (u.buf != priv->command_buffer)
 848                 kfree(u.buf);
 849         return ret;
 850 }
 851
 852 static int rndis_reset(struct usbnet *usbdev)
 853 {
 854         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 855         struct rndis_reset *reset;
 856         int ret;
 857
 858         mutex_lock(&priv->command_lock);
 859
 860         reset = (void *)priv->command_buffer;
 861         memset(reset, 0, sizeof(*reset));
 862         reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 863         reset->msg_len = cpu_to_le32(sizeof(*reset));
 864         priv->current_command_oid = 0;
 865         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 866
 867         mutex_unlock(&priv->command_lock);
 868
 869         if (ret < 0)
 870                 return ret;
 871         return 0;
 872 }
 873
 874 /*
 875  * Specs say that we can only set config parameters only soon after device
 876  * initialization.
 877  *   value_type: 0 = u32, 2 = unicode string
 878  */
 879 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 880                                                 int value_type, void *value)
 881 {
 882         struct ndis_config_param *infobuf;
 883         int value_len, info_len, param_len, ret, i;
 884         __le16 *unibuf;
 885         __le32 *dst_value;
 886
 887         if (value_type == 0)
 888                 value_len = sizeof(__le32);
 889         else if (value_type == 2)
 890                 value_len = strlen(value) * sizeof(__le16);
 891         else
 892                 return -EINVAL;
 893
 894         param_len = strlen(param) * sizeof(__le16);
 895         info_len = sizeof(*infobuf) + param_len + value_len;
 896
 897 #ifdef DEBUG
 898         info_len += 12;
 899 #endif
 900         infobuf = kmalloc(info_len, GFP_KERNEL);
 901         if (!infobuf)
 902                 return -ENOMEM;
 903
 904 #ifdef DEBUG
 905         info_len -= 12;
 906         /* extra 12 bytes are for padding (debug output) */
 907         memset(infobuf, 0xCC, info_len + 12);
 908 #endif
 909
 910         if (value_type == 2)
 911                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 912                            param, (u8 *)value);
 913         else
 914                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 915                            param, *(u32 *)value);
 916
 917         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 918         infobuf->name_length = cpu_to_le32(param_len);
 919         infobuf->type = cpu_to_le32(value_type);
 920         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 921         infobuf->value_length = cpu_to_le32(value_len);
 922
 923         /* simple string to unicode string conversion */
 924         unibuf = (void *)infobuf + sizeof(*infobuf);
 925         for (i = 0; i < param_len / sizeof(__le16); i++)
 926                 unibuf[i] = cpu_to_le16(param[i]);
 927
 928         if (value_type == 2) {
 929                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 930                 for (i = 0; i < value_len / sizeof(__le16); i++)
 931                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 932         } else {
 933                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 934                 *dst_value = cpu_to_le32(*(u32 *)value);
 935         }
 936
 937 #ifdef DEBUG
 938         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 939         for (i = 0; i < info_len; i += 12) {
 940                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 941                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 942                            cpu_to_be32(tmp[0]),
 943                            cpu_to_be32(tmp[1]),
 944                            cpu_to_be32(tmp[2]));
 945         }
 946 #endif
 947
 948         ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 949                                                         infobuf, info_len);
 950         if (ret != 0)
 951                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 952                            ret);
 953
 954         kfree(infobuf);
 955         return ret;
 956 }
 957
 958 static int rndis_set_config_parameter_str(struct usbnet *dev,
 959                                                 char *param, char *value)
 960 {
 961         return rndis_set_config_parameter(dev, param, 2, value);
 962 }
 963
 964 /*
 965  * data conversion functions
 966  */
 967 static int level_to_qual(int level)
 968 {
 969         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 970         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 971 }
 972
 973 /*
 974  * common functions
 975  */
 976 static int set_infra_mode(struct usbnet *usbdev, int mode);
 977 static void restore_keys(struct usbnet *usbdev);
 978 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 979                                         bool *matched);
 980
 981 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 982 {
 983         __le32 tmp;
 984
 985         /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 986         tmp = cpu_to_le32(1);
 987         return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 988                                                         sizeof(tmp));
 989 }
 990
 991 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 992 {
 993         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 994         int ret;
 995
 996         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 997                             ssid, sizeof(*ssid));
 998         if (ret < 0) {
 999                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1000                 return ret;
1001         }
1002         if (ret == 0) {
1003                 priv->radio_on = true;
1004                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1005         }
1006
1007         return ret;
1008 }
1009
1010 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1011 {
1012         int ret;
1013
1014         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1015                             bssid, ETH_ALEN);
1016         if (ret < 0) {
1017                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1018                             bssid, ret);
1019                 return ret;
1020         }
1021
1022         return ret;
1023 }
1024
1025 static int clear_bssid(struct usbnet *usbdev)
1026 {
1027         static const u8 broadcast_mac[ETH_ALEN] = {
1028                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1029         };
1030
1031         return set_bssid(usbdev, broadcast_mac);
1032 }
1033
1034 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1035 {
1036         int ret, len;
1037
1038         len = ETH_ALEN;
1039         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1040                               bssid, &len);
1041
1042         if (ret != 0)
1043                 memset(bssid, 0, ETH_ALEN);
1044
1045         return ret;
1046 }
1047
1048 static int get_association_info(struct usbnet *usbdev,
1049                         struct ndis_80211_assoc_info *info, int len)
1050 {
1051         return rndis_query_oid(usbdev,
1052                         RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1053                         info, &len);
1054 }
1055
1056 static bool is_associated(struct usbnet *usbdev)
1057 {
1058         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1059         u8 bssid[ETH_ALEN];
1060         int ret;
1061
1062         if (!priv->radio_on)
1063                 return false;
1064
1065         ret = get_bssid(usbdev, bssid);
1066
1067         return (ret == 0 && !is_zero_ether_addr(bssid));
1068 }
1069
1070 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1071 {
1072         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1073         struct ndis_80211_ssid ssid;
1074         int i, ret = 0;
1075
1076         if (priv->radio_on) {
1077                 ret = rndis_set_oid(usbdev,
1078                                 RNDIS_OID_802_11_DISASSOCIATE,
1079                                 NULL, 0);
1080                 if (ret == 0) {
1081                         priv->radio_on = false;
1082                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1083                                    __func__);
1084
1085                         if (reset_ssid)
1086                                 msleep(100);
1087                 }
1088         }
1089
1090         /* disassociate causes radio to be turned off; if reset_ssid
1091          * is given, set random ssid to enable radio */
1092         if (reset_ssid) {
1093                 /* Set device to infrastructure mode so we don't get ad-hoc
1094                  * 'media connect' indications with the random ssid.
1095                  */
1096                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1097
1098                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1099                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1100                 ssid.essid[0] = 0x1;
1101                 ssid.essid[1] = 0xff;
1102                 for (i = 2; i < sizeof(ssid.essid); i++)
1103                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1104                 ret = set_essid(usbdev, &ssid);
1105         }
1106         return ret;
1107 }
1108
1109 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1110                                 enum nl80211_auth_type auth_type, int keymgmt)
1111 {
1112         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1113         __le32 tmp;
1114         int auth_mode, ret;
1115
1116         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1117                    __func__, wpa_version, auth_type, keymgmt);
1118
1119         if (wpa_version & NL80211_WPA_VERSION_2) {
1120                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1121                         auth_mode = NDIS_80211_AUTH_WPA2;
1122                 else
1123                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1124         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1125                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1126                         auth_mode = NDIS_80211_AUTH_WPA;
1127                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1128                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1129                 else
1130                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1131         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1132                 auth_mode = NDIS_80211_AUTH_SHARED;
1133         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1134                 auth_mode = NDIS_80211_AUTH_OPEN;
1135         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1136                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1137         else
1138                 return -ENOTSUPP;
1139
1140         tmp = cpu_to_le32(auth_mode);
1141         ret = rndis_set_oid(usbdev,
1142                             RNDIS_OID_802_11_AUTHENTICATION_MODE,
1143                             &tmp, sizeof(tmp));
1144         if (ret != 0) {
1145                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1146                             ret);
1147                 return ret;
1148         }
1149
1150         priv->wpa_version = wpa_version;
1151
1152         return 0;
1153 }
1154
1155 static int set_priv_filter(struct usbnet *usbdev)
1156 {
1157         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1158         __le32 tmp;
1159
1160         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1161                    __func__, priv->wpa_version);
1162
1163         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1164             priv->wpa_version & NL80211_WPA_VERSION_1)
1165                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1166         else
1167                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1168
1169         return rndis_set_oid(usbdev,
1170                              RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1171                              sizeof(tmp));
1172 }
1173
1174 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1175 {
1176         __le32 tmp;
1177         int encr_mode, ret;
1178
1179         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1180                    __func__, pairwise, groupwise);
1181
1182         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1183                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1184         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1185                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1186         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1187                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1188         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1189                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1190         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1191                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1192         else
1193                 encr_mode = NDIS_80211_ENCR_DISABLED;
1194
1195         tmp = cpu_to_le32(encr_mode);
1196         ret = rndis_set_oid(usbdev,
1197                         RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1198                         sizeof(tmp));
1199         if (ret != 0) {
1200                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1201                             ret);
1202                 return ret;
1203         }
1204
1205         return 0;
1206 }
1207
1208 static int set_infra_mode(struct usbnet *usbdev, int mode)
1209 {
1210         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1211         __le32 tmp;
1212         int ret;
1213
1214         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1215                    __func__, priv->infra_mode);
1216
1217         tmp = cpu_to_le32(mode);
1218         ret = rndis_set_oid(usbdev,
1219                             RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1220                             &tmp, sizeof(tmp));
1221         if (ret != 0) {
1222                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1223                             ret);
1224                 return ret;
1225         }
1226
1227         /* NDIS drivers clear keys when infrastructure mode is
1228          * changed. But Linux tools assume otherwise. So set the
1229          * keys */
1230         restore_keys(usbdev);
1231
1232         priv->infra_mode = mode;
1233         return 0;
1234 }
1235
1236 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1237 {
1238         __le32 tmp;
1239
1240         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1241
1242         if (rts_threshold < 0 || rts_threshold > 2347)
1243                 rts_threshold = 2347;
1244
1245         tmp = cpu_to_le32(rts_threshold);
1246         return rndis_set_oid(usbdev,
1247                              RNDIS_OID_802_11_RTS_THRESHOLD,
1248                              &tmp, sizeof(tmp));
1249 }
1250
1251 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1252 {
1253         __le32 tmp;
1254
1255         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1256
1257         if (frag_threshold < 256 || frag_threshold > 2346)
1258                 frag_threshold = 2346;
1259
1260         tmp = cpu_to_le32(frag_threshold);
1261         return rndis_set_oid(usbdev,
1262                         RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1263                         &tmp, sizeof(tmp));
1264 }
1265
1266 static void set_default_iw_params(struct usbnet *usbdev)
1267 {
1268         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1269         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1270                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1271         set_priv_filter(usbdev);
1272         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1273 }
1274
1275 static int deauthenticate(struct usbnet *usbdev)
1276 {
1277         int ret;
1278
1279         ret = disassociate(usbdev, true);
1280         set_default_iw_params(usbdev);
1281         return ret;
1282 }
1283
1284 static int set_channel(struct usbnet *usbdev, int channel)
1285 {
1286         struct ndis_80211_conf config;
1287         unsigned int dsconfig;
1288         int len, ret;
1289
1290         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1291
1292         /* this OID is valid only when not associated */
1293         if (is_associated(usbdev))
1294                 return 0;
1295
1296         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1297
1298         len = sizeof(config);
1299         ret = rndis_query_oid(usbdev,
1300                         RNDIS_OID_802_11_CONFIGURATION,
1301                         &config, &len);
1302         if (ret < 0) {
1303                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1304                            __func__);
1305                 return ret;
1306         }
1307
1308         config.ds_config = cpu_to_le32(dsconfig);
1309         ret = rndis_set_oid(usbdev,
1310                         RNDIS_OID_802_11_CONFIGURATION,
1311                         &config, sizeof(config));
1312
1313         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1314
1315         return ret;
1316 }
1317
1318 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1319                                                      u32 *beacon_period)
1320 {
1321         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1322         struct ieee80211_channel *channel;
1323         struct ndis_80211_conf config;
1324         int len, ret;
1325
1326         /* Get channel and beacon interval */
1327         len = sizeof(config);
1328         ret = rndis_query_oid(usbdev,
1329                         RNDIS_OID_802_11_CONFIGURATION,
1330                         &config, &len);
1331         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1332                                 __func__, ret);
1333         if (ret < 0)
1334                 return NULL;
1335
1336         channel = ieee80211_get_channel(priv->wdev.wiphy,
1337                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1338         if (!channel)
1339                 return NULL;
1340
1341         if (beacon_period)
1342                 *beacon_period = le32_to_cpu(config.beacon_period);
1343         return channel;
1344 }
1345
1346 /* index must be 0 - N, as per NDIS  */
1347 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1348                                                                 u8 index)
1349 {
1350         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1351         struct ndis_80211_wep_key ndis_key;
1352         u32 cipher;
1353         int ret;
1354
1355         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1356                    __func__, index, key_len);
1357
1358         if (index >= RNDIS_WLAN_NUM_KEYS)
1359                 return -EINVAL;
1360
1361         if (key_len == 5)
1362                 cipher = WLAN_CIPHER_SUITE_WEP40;
1363         else if (key_len == 13)
1364                 cipher = WLAN_CIPHER_SUITE_WEP104;
1365         else
1366                 return -EINVAL;
1367
1368         memset(&ndis_key, 0, sizeof(ndis_key));
1369
1370         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1371         ndis_key.length = cpu_to_le32(key_len);
1372         ndis_key.index = cpu_to_le32(index);
1373         memcpy(&ndis_key.material, key, key_len);
1374
1375         if (index == priv->encr_tx_key_index) {
1376                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1377                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1378                                                         RNDIS_WLAN_ALG_NONE);
1379                 if (ret)
1380                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1381                                     ret);
1382         }
1383
1384         ret = rndis_set_oid(usbdev,
1385                         RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1386                         sizeof(ndis_key));
1387         if (ret != 0) {
1388                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1389                             index + 1, ret);
1390                 return ret;
1391         }
1392
1393         priv->encr_keys[index].len = key_len;
1394         priv->encr_keys[index].cipher = cipher;
1395         memcpy(&priv->encr_keys[index].material, key, key_len);
1396         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1397
1398         return 0;
1399 }
1400
1401 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1402                         u8 index, const u8 *addr, const u8 *rx_seq,
1403                         int seq_len, u32 cipher, __le32 flags)
1404 {
1405         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1406         struct ndis_80211_key ndis_key;
1407         bool is_addr_ok;
1408         int ret;
1409
1410         if (index >= RNDIS_WLAN_NUM_KEYS) {
1411                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1412                            __func__, index);
1413                 return -EINVAL;
1414         }
1415         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1416                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1417                            __func__, key_len);
1418                 return -EINVAL;
1419         }
1420         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1421                 if (!rx_seq || seq_len <= 0) {
1422                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1423                                    __func__);
1424                         return -EINVAL;
1425                 }
1426                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1427                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1428                         return -EINVAL;
1429                 }
1430         }
1431
1432         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1433                                         !is_broadcast_ether_addr(addr);
1434         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1435                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1436                            __func__, addr);
1437                 return -EINVAL;
1438         }
1439
1440         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1441                    __func__, index,
1442                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1443                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1444                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1445
1446         memset(&ndis_key, 0, sizeof(ndis_key));
1447
1448         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1449                                 sizeof(ndis_key.material) + key_len);
1450         ndis_key.length = cpu_to_le32(key_len);
1451         ndis_key.index = cpu_to_le32(index) | flags;
1452
1453         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1454                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1455                  * different order than NDIS spec, so swap the order here. */
1456                 memcpy(ndis_key.material, key, 16);
1457                 memcpy(ndis_key.material + 16, key + 24, 8);
1458                 memcpy(ndis_key.material + 24, key + 16, 8);
1459         } else
1460                 memcpy(ndis_key.material, key, key_len);
1461
1462         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1463                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1464
1465         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1466                 /* pairwise key */
1467                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1468         } else {
1469                 /* group key */
1470                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1471                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1472                 else
1473                         get_bssid(usbdev, ndis_key.bssid);
1474         }
1475
1476         ret = rndis_set_oid(usbdev,
1477                         RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1478                         le32_to_cpu(ndis_key.size));
1479         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1480                    __func__, ret);
1481         if (ret != 0)
1482                 return ret;
1483
1484         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1485         priv->encr_keys[index].len = key_len;
1486         priv->encr_keys[index].cipher = cipher;
1487         memcpy(&priv->encr_keys[index].material, key, key_len);
1488         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1489                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1490         else
1491                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1492
1493         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1494                 priv->encr_tx_key_index = index;
1495
1496         return 0;
1497 }
1498
1499 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1500 {
1501         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1502         struct rndis_wlan_encr_key key;
1503
1504         if (is_wpa_key(priv, key_idx))
1505                 return 0;
1506
1507         key = priv->encr_keys[key_idx];
1508
1509         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1510
1511         if (key.len == 0)
1512                 return 0;
1513
1514         return add_wep_key(usbdev, key.material, key.len, key_idx);
1515 }
1516
1517 static void restore_keys(struct usbnet *usbdev)
1518 {
1519         int i;
1520
1521         for (i = 0; i < 4; i++)
1522                 restore_key(usbdev, i);
1523 }
1524
1525 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1526 {
1527         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1528 }
1529
1530 /* remove_key is for both wep and wpa */
1531 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1532 {
1533         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1534         struct ndis_80211_remove_key remove_key;
1535         __le32 keyindex;
1536         bool is_wpa;
1537         int ret;
1538
1539         if (index >= RNDIS_WLAN_NUM_KEYS)
1540                 return -ENOENT;
1541
1542         if (priv->encr_keys[index].len == 0)
1543                 return 0;
1544
1545         is_wpa = is_wpa_key(priv, index);
1546
1547         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1548                    __func__, index, is_wpa ? "wpa" : "wep",
1549                    priv->encr_keys[index].len);
1550
1551         clear_key(priv, index);
1552
1553         if (is_wpa) {
1554                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1555                 remove_key.index = cpu_to_le32(index);
1556                 if (bssid) {
1557                         /* pairwise key */
1558                         if (!is_broadcast_ether_addr(bssid))
1559                                 remove_key.index |=
1560                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1561                         memcpy(remove_key.bssid, bssid,
1562                                         sizeof(remove_key.bssid));
1563                 } else
1564                         memset(remove_key.bssid, 0xff,
1565                                                 sizeof(remove_key.bssid));
1566
1567                 ret = rndis_set_oid(usbdev,
1568                                 RNDIS_OID_802_11_REMOVE_KEY,
1569                                 &remove_key, sizeof(remove_key));
1570                 if (ret != 0)
1571                         return ret;
1572         } else {
1573                 keyindex = cpu_to_le32(index);
1574                 ret = rndis_set_oid(usbdev,
1575                                 RNDIS_OID_802_11_REMOVE_WEP,
1576                                 &keyindex, sizeof(keyindex));
1577                 if (ret != 0) {
1578                         netdev_warn(usbdev->net,
1579                                     "removing encryption key %d failed (%08X)\n",
1580                                     index, ret);
1581                         return ret;
1582                 }
1583         }
1584
1585         /* if it is transmit key, disable encryption */
1586         if (index == priv->encr_tx_key_index)
1587                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1588
1589         return 0;
1590 }
1591
1592 static void set_multicast_list(struct usbnet *usbdev)
1593 {
1594         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1595         struct netdev_hw_addr *ha;
1596         __le32 filter, basefilter;
1597         int ret;
1598         char *mc_addrs = NULL;
1599         int mc_count;
1600
1601         basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1602                                           RNDIS_PACKET_TYPE_BROADCAST);
1603
1604         if (usbdev->net->flags & IFF_PROMISC) {
1605                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1606                                       RNDIS_PACKET_TYPE_ALL_LOCAL);
1607         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1608                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1609         }
1610
1611         if (filter != basefilter)
1612                 goto set_filter;
1613
1614         /*
1615          * mc_list should be accessed holding the lock, so copy addresses to
1616          * local buffer first.
1617          */
1618         netif_addr_lock_bh(usbdev->net);
1619         mc_count = netdev_mc_count(usbdev->net);
1620         if (mc_count > priv->multicast_size) {
1621                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1622         } else if (mc_count) {
1623                 int i = 0;
1624
1625                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1626                 if (!mc_addrs) {
1627                         netdev_warn(usbdev->net,
1628                                     "couldn't alloc %d bytes of memory\n",
1629                                     mc_count * ETH_ALEN);
1630                         netif_addr_unlock_bh(usbdev->net);
1631                         return;
1632                 }
1633
1634                 netdev_for_each_mc_addr(ha, usbdev->net)
1635                         memcpy(mc_addrs + i++ * ETH_ALEN,
1636                                ha->addr, ETH_ALEN);
1637         }
1638         netif_addr_unlock_bh(usbdev->net);
1639
1640         if (filter != basefilter)
1641                 goto set_filter;
1642
1643         if (mc_count) {
1644                 ret = rndis_set_oid(usbdev,
1645                                 RNDIS_OID_802_3_MULTICAST_LIST,
1646                                 mc_addrs, mc_count * ETH_ALEN);
1647                 kfree(mc_addrs);
1648                 if (ret == 0)
1649                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1650                 else
1651                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1652
1653                 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1654                            mc_count, priv->multicast_size, ret);
1655         }
1656
1657 set_filter:
1658         ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1659                                                         sizeof(filter));
1660         if (ret < 0) {
1661                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1662                             le32_to_cpu(filter));
1663         }
1664
1665         netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1666                    le32_to_cpu(filter), ret);
1667 }
1668
1669 #ifdef DEBUG
1670 static void debug_print_pmkids(struct usbnet *usbdev,
1671                                 struct ndis_80211_pmkid *pmkids,
1672                                 const char *func_str)
1673 {
1674         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1675         int i, len, count, max_pmkids, entry_len;
1676
1677         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1678         len = le32_to_cpu(pmkids->length);
1679         count = le32_to_cpu(pmkids->bssid_info_count);
1680
1681         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1682
1683         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1684                                 "%d)\n", func_str, count, len, entry_len);
1685
1686         if (count > max_pmkids)
1687                 count = max_pmkids;
1688
1689         for (i = 0; i < count; i++) {
1690                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1691
1692                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1693                                 "pmkid: %08X:%08X:%08X:%08X\n",
1694                                 func_str, pmkids->bssid_info[i].bssid,
1695                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1696                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1697         }
1698 }
1699 #else
1700 static void debug_print_pmkids(struct usbnet *usbdev,
1701                                 struct ndis_80211_pmkid *pmkids,
1702                                 const char *func_str)
1703 {
1704         return;
1705 }
1706 #endif
1707
1708 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1709 {
1710         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1711         struct ndis_80211_pmkid *pmkids;
1712         int len, ret, max_pmkids;
1713
1714         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1715         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1716
1717         pmkids = kzalloc(len, GFP_KERNEL);
1718         if (!pmkids)
1719                 return ERR_PTR(-ENOMEM);
1720
1721         pmkids->length = cpu_to_le32(len);
1722         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1723
1724         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1725                         pmkids, &len);
1726         if (ret < 0) {
1727                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1728                                 " -> %d\n", __func__, len, max_pmkids, ret);
1729
1730                 kfree(pmkids);
1731                 return ERR_PTR(ret);
1732         }
1733
1734         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1735                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1736
1737         debug_print_pmkids(usbdev, pmkids, __func__);
1738
1739         return pmkids;
1740 }
1741
1742 static int set_device_pmkids(struct usbnet *usbdev,
1743                                 struct ndis_80211_pmkid *pmkids)
1744 {
1745         int ret, len, num_pmkids;
1746
1747         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1748         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1749         pmkids->length = cpu_to_le32(len);
1750
1751         debug_print_pmkids(usbdev, pmkids, __func__);
1752
1753         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1754                             le32_to_cpu(pmkids->length));
1755         if (ret < 0) {
1756                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1757                                 "\n", __func__, len, num_pmkids, ret);
1758         }
1759
1760         kfree(pmkids);
1761         return ret;
1762 }
1763
1764 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1765                                                 struct ndis_80211_pmkid *pmkids,
1766                                                 struct cfg80211_pmksa *pmksa,
1767                                                 int max_pmkids)
1768 {
1769         int i, newlen, err;
1770         unsigned int count;
1771
1772         count = le32_to_cpu(pmkids->bssid_info_count);
1773
1774         if (count > max_pmkids)
1775                 count = max_pmkids;
1776
1777         for (i = 0; i < count; i++)
1778                 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1779                                      pmksa->bssid))
1780                         break;
1781
1782         /* pmkid not found */
1783         if (i == count) {
1784                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1785                                         __func__, pmksa->bssid);
1786                 err = -ENOENT;
1787                 goto error;
1788         }
1789
1790         for (; i + 1 < count; i++)
1791                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1792
1793         count--;
1794         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1795
1796         pmkids->length = cpu_to_le32(newlen);
1797         pmkids->bssid_info_count = cpu_to_le32(count);
1798
1799         return pmkids;
1800 error:
1801         kfree(pmkids);
1802         return ERR_PTR(err);
1803 }
1804
1805 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1806                                                 struct ndis_80211_pmkid *pmkids,
1807                                                 struct cfg80211_pmksa *pmksa,
1808                                                 int max_pmkids)
1809 {
1810         int i, err, newlen;
1811         unsigned int count;
1812
1813         count = le32_to_cpu(pmkids->bssid_info_count);
1814
1815         if (count > max_pmkids)
1816                 count = max_pmkids;
1817
1818         /* update with new pmkid */
1819         for (i = 0; i < count; i++) {
1820                 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1821                                       pmksa->bssid))
1822                         continue;
1823
1824                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1825                                                                 WLAN_PMKID_LEN);
1826
1827                 return pmkids;
1828         }
1829
1830         /* out of space, return error */
1831         if (i == max_pmkids) {
1832                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1833                 err = -ENOSPC;
1834                 goto error;
1835         }
1836
1837         /* add new pmkid */
1838         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1839
1840         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1841         if (!pmkids) {
1842                 err = -ENOMEM;
1843                 goto error;
1844         }
1845
1846         pmkids->length = cpu_to_le32(newlen);
1847         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1848
1849         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1850         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1851
1852         return pmkids;
1853 error:
1854         kfree(pmkids);
1855         return ERR_PTR(err);
1856 }
1857
1858 /*
1859  * cfg80211 ops
1860  */
1861 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1862                                         struct net_device *dev,
1863                                         enum nl80211_iftype type, u32 *flags,
1864                                         struct vif_params *params)
1865 {
1866         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1867         struct usbnet *usbdev = priv->usbdev;
1868         int mode;
1869
1870         switch (type) {
1871         case NL80211_IFTYPE_ADHOC:
1872                 mode = NDIS_80211_INFRA_ADHOC;
1873                 break;
1874         case NL80211_IFTYPE_STATION:
1875                 mode = NDIS_80211_INFRA_INFRA;
1876                 break;
1877         default:
1878                 return -EINVAL;
1879         }
1880
1881         priv->wdev.iftype = type;
1882
1883         return set_infra_mode(usbdev, mode);
1884 }
1885
1886 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1887 {
1888         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1889         struct usbnet *usbdev = priv->usbdev;
1890         int err;
1891
1892         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1893                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1894                 if (err < 0)
1895                         return err;
1896         }
1897
1898         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1899                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1900                 if (err < 0)
1901                         return err;
1902         }
1903
1904         return 0;
1905 }
1906
1907 static int rndis_set_tx_power(struct wiphy *wiphy,
1908                               enum nl80211_tx_power_setting type,
1909                               int mbm)
1910 {
1911         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1912         struct usbnet *usbdev = priv->usbdev;
1913
1914         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1915                    __func__, type, mbm);
1916
1917         if (mbm < 0 || (mbm % 100))
1918                 return -ENOTSUPP;
1919
1920         /* Device doesn't support changing txpower after initialization, only
1921          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1922          * currently used.
1923          */
1924         if (type == NL80211_TX_POWER_AUTOMATIC ||
1925             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1926                 if (!priv->radio_on)
1927                         disassociate(usbdev, true); /* turn on radio */
1928
1929                 return 0;
1930         }
1931
1932         return -ENOTSUPP;
1933 }
1934
1935 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1936 {
1937         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1938         struct usbnet *usbdev = priv->usbdev;
1939
1940         *dbm = get_bcm4320_power_dbm(priv);
1941
1942         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1943
1944         return 0;
1945 }
1946
1947 #define SCAN_DELAY_JIFFIES (6 * HZ)
1948 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1949                         struct cfg80211_scan_request *request)
1950 {
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 (!request)
1964                 return -EINVAL;
1965
1966         if (priv->scan_request && priv->scan_request != request)
1967                 return -EBUSY;
1968
1969         priv->scan_request = request;
1970
1971         ret = rndis_start_bssid_list_scan(usbdev);
1972         if (ret == 0) {
1973                 if (priv->device_type == RNDIS_BCM4320A)
1974                         delay = HZ;
1975
1976                 /* Wait before retrieving scan results from device */
1977                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1978         }
1979
1980         return ret;
1981 }
1982
1983 static bool rndis_bss_info_update(struct usbnet *usbdev,
1984                                   struct ndis_80211_bssid_ex *bssid)
1985 {
1986         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1987         struct ieee80211_channel *channel;
1988         struct cfg80211_bss *bss;
1989         s32 signal;
1990         u64 timestamp;
1991         u16 capability;
1992         u16 beacon_interval;
1993         struct ndis_80211_fixed_ies *fixed;
1994         int ie_len, bssid_len;
1995         u8 *ie;
1996
1997         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1998                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1999
2000         /* parse bssid structure */
2001         bssid_len = le32_to_cpu(bssid->length);
2002
2003         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2004                         sizeof(struct ndis_80211_fixed_ies))
2005                 return NULL;
2006
2007         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2008
2009         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2010         ie_len = min(bssid_len - (int)sizeof(*bssid),
2011                                         (int)le32_to_cpu(bssid->ie_length));
2012         ie_len -= sizeof(struct ndis_80211_fixed_ies);
2013         if (ie_len < 0)
2014                 return NULL;
2015
2016         /* extract data for cfg80211_inform_bss */
2017         channel = ieee80211_get_channel(priv->wdev.wiphy,
2018                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2019         if (!channel)
2020                 return NULL;
2021
2022         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2023         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2024         capability = le16_to_cpu(fixed->capabilities);
2025         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2026
2027         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2028                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2029                 GFP_KERNEL);
2030         cfg80211_put_bss(bss);
2031
2032         return (bss != NULL);
2033 }
2034
2035 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2036                                         struct ndis_80211_bssid_ex *bssid,
2037                                         int *bssid_len, void *buf, int len)
2038 {
2039         void *buf_end, *bssid_end;
2040
2041         buf_end = (char *)buf + len;
2042         bssid_end = (char *)bssid + *bssid_len;
2043
2044         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2045                 *bssid_len = 0;
2046                 return NULL;
2047         } else {
2048                 bssid = (void *)((char *)bssid + *bssid_len);
2049                 *bssid_len = le32_to_cpu(bssid->length);
2050                 return bssid;
2051         }
2052 }
2053
2054 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2055                                   int bssid_len, void *buf, int len)
2056 {
2057         void *buf_end, *bssid_end;
2058
2059         if (!bssid || bssid_len <= 0 || bssid_len > len)
2060                 return false;
2061
2062         buf_end = (char *)buf + len;
2063         bssid_end = (char *)bssid + bssid_len;
2064
2065         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2066 }
2067
2068 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2069                                         bool *matched)
2070 {
2071         void *buf = NULL;
2072         struct ndis_80211_bssid_list_ex *bssid_list;
2073         struct ndis_80211_bssid_ex *bssid;
2074         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2075
2076         netdev_dbg(usbdev->net, "%s()\n", __func__);
2077
2078         len = CONTROL_BUFFER_SIZE;
2079 resize_buf:
2080         buf = kzalloc(len, GFP_KERNEL);
2081         if (!buf) {
2082                 ret = -ENOMEM;
2083                 goto out;
2084         }
2085
2086         /* BSSID-list might have got bigger last time we checked, keep
2087          * resizing until it won't get any bigger.
2088          */
2089         new_len = len;
2090         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2091                               buf, &new_len);
2092         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2093                 goto out;
2094
2095         if (new_len > len) {
2096                 len = new_len;
2097                 kfree(buf);
2098                 goto resize_buf;
2099         }
2100
2101         len = new_len;
2102
2103         bssid_list = buf;
2104         count = le32_to_cpu(bssid_list->num_items);
2105         real_count = 0;
2106         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2107
2108         bssid_len = 0;
2109         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2110
2111         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2112          * received 'num_items' and walking through full bssid buffer instead.
2113          */
2114         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2115                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2116                     matched) {
2117                         if (!ether_addr_equal(bssid->mac, match_bssid))
2118                                 *matched = true;
2119                 }
2120
2121                 real_count++;
2122                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2123         }
2124
2125         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2126                                 " %d\n", __func__, count, real_count);
2127
2128 out:
2129         kfree(buf);
2130         return ret;
2131 }
2132
2133 static void rndis_get_scan_results(struct work_struct *work)
2134 {
2135         struct rndis_wlan_private *priv =
2136                 container_of(work, struct rndis_wlan_private, scan_work.work);
2137         struct usbnet *usbdev = priv->usbdev;
2138         int ret;
2139
2140         netdev_dbg(usbdev->net, "get_scan_results\n");
2141
2142         if (!priv->scan_request)
2143                 return;
2144
2145         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2146
2147         cfg80211_scan_done(priv->scan_request, ret < 0);
2148
2149         priv->scan_request = NULL;
2150 }
2151
2152 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2153                                         struct cfg80211_connect_params *sme)
2154 {
2155         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2156         struct usbnet *usbdev = priv->usbdev;
2157         struct ieee80211_channel *channel = sme->channel;
2158         struct ndis_80211_ssid ssid;
2159         int pairwise = RNDIS_WLAN_ALG_NONE;
2160         int groupwise = RNDIS_WLAN_ALG_NONE;
2161         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2162         int length, i, ret, chan = -1;
2163
2164         if (channel)
2165                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2166
2167         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2168         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2169                 pairwise |=
2170                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2171
2172         if (sme->crypto.n_ciphers_pairwise > 0 &&
2173                         pairwise == RNDIS_WLAN_ALG_NONE) {
2174                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2175                 return -ENOTSUPP;
2176         }
2177
2178         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2179                 keymgmt |=
2180                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2181
2182         if (sme->crypto.n_akm_suites > 0 &&
2183                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2184                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2185                 return -ENOTSUPP;
2186         }
2187
2188         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2189                    sme->ssid, sme->bssid, chan,
2190                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2191                    groupwise, pairwise, keymgmt);
2192
2193         if (is_associated(usbdev))
2194                 disassociate(usbdev, false);
2195
2196         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2197         if (ret < 0) {
2198                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2199                            ret);
2200                 goto err_turn_radio_on;
2201         }
2202
2203         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2204                                                                 keymgmt);
2205         if (ret < 0) {
2206                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2207                            ret);
2208                 goto err_turn_radio_on;
2209         }
2210
2211         set_priv_filter(usbdev);
2212
2213         ret = set_encr_mode(usbdev, pairwise, groupwise);
2214         if (ret < 0) {
2215                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2216                            ret);
2217                 goto err_turn_radio_on;
2218         }
2219
2220         if (channel) {
2221                 ret = set_channel(usbdev, chan);
2222                 if (ret < 0) {
2223                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2224                                    ret);
2225                         goto err_turn_radio_on;
2226                 }
2227         }
2228
2229         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2230                 priv->encr_tx_key_index = sme->key_idx;
2231                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2232                 if (ret < 0) {
2233                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2234                                    ret, sme->key_len, sme->key_idx);
2235                         goto err_turn_radio_on;
2236                 }
2237         }
2238
2239         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2240                                 !is_broadcast_ether_addr(sme->bssid)) {
2241                 ret = set_bssid(usbdev, sme->bssid);
2242                 if (ret < 0) {
2243                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2244                                    ret);
2245                         goto err_turn_radio_on;
2246                 }
2247         } else
2248                 clear_bssid(usbdev);
2249
2250         length = sme->ssid_len;
2251         if (length > NDIS_802_11_LENGTH_SSID)
2252                 length = NDIS_802_11_LENGTH_SSID;
2253
2254         memset(&ssid, 0, sizeof(ssid));
2255         ssid.length = cpu_to_le32(length);
2256         memcpy(ssid.essid, sme->ssid, length);
2257
2258         /* Pause and purge rx queue, so we don't pass packets before
2259          * 'media connect'-indication.
2260          */
2261         usbnet_pause_rx(usbdev);
2262         usbnet_purge_paused_rxq(usbdev);
2263
2264         ret = set_essid(usbdev, &ssid);
2265         if (ret < 0)
2266                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2267         return ret;
2268
2269 err_turn_radio_on:
2270         disassociate(usbdev, true);
2271
2272         return ret;
2273 }
2274
2275 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2276                                                                 u16 reason_code)
2277 {
2278         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2279         struct usbnet *usbdev = priv->usbdev;
2280
2281         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2282
2283         priv->connected = false;
2284         memset(priv->bssid, 0, ETH_ALEN);
2285
2286         return deauthenticate(usbdev);
2287 }
2288
2289 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2290                                         struct cfg80211_ibss_params *params)
2291 {
2292         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2293         struct usbnet *usbdev = priv->usbdev;
2294         struct ieee80211_channel *channel = params->channel;
2295         struct ndis_80211_ssid ssid;
2296         enum nl80211_auth_type auth_type;
2297         int ret, alg, length, chan = -1;
2298
2299         if (channel)
2300                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2301
2302         /* TODO: How to handle ad-hoc encryption?
2303          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2304          * pre-shared for encryption (open/shared/wpa), is key set before
2305          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2306          */
2307         if (params->privacy) {
2308                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2309                 alg = RNDIS_WLAN_ALG_WEP;
2310         } else {
2311                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2312                 alg = RNDIS_WLAN_ALG_NONE;
2313         }
2314
2315         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2316                    params->ssid, params->bssid, chan, params->privacy);
2317
2318         if (is_associated(usbdev))
2319                 disassociate(usbdev, false);
2320
2321         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2322         if (ret < 0) {
2323                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2324                            ret);
2325                 goto err_turn_radio_on;
2326         }
2327
2328         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2329         if (ret < 0) {
2330                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2331                            ret);
2332                 goto err_turn_radio_on;
2333         }
2334
2335         set_priv_filter(usbdev);
2336
2337         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2338         if (ret < 0) {
2339                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2340                            ret);
2341                 goto err_turn_radio_on;
2342         }
2343
2344         if (channel) {
2345                 ret = set_channel(usbdev, chan);
2346                 if (ret < 0) {
2347                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2348                                    ret);
2349                         goto err_turn_radio_on;
2350                 }
2351         }
2352
2353         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2354                                 !is_broadcast_ether_addr(params->bssid)) {
2355                 ret = set_bssid(usbdev, params->bssid);
2356                 if (ret < 0) {
2357                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2358                                    ret);
2359                         goto err_turn_radio_on;
2360                 }
2361         } else
2362                 clear_bssid(usbdev);
2363
2364         length = params->ssid_len;
2365         if (length > NDIS_802_11_LENGTH_SSID)
2366                 length = NDIS_802_11_LENGTH_SSID;
2367
2368         memset(&ssid, 0, sizeof(ssid));
2369         ssid.length = cpu_to_le32(length);
2370         memcpy(ssid.essid, params->ssid, length);
2371
2372         /* Don't need to pause rx queue for ad-hoc. */
2373         usbnet_purge_paused_rxq(usbdev);
2374         usbnet_resume_rx(usbdev);
2375
2376         ret = set_essid(usbdev, &ssid);
2377         if (ret < 0)
2378                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2379                            ret);
2380         return ret;
2381
2382 err_turn_radio_on:
2383         disassociate(usbdev, true);
2384
2385         return ret;
2386 }
2387
2388 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2389 {
2390         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2391         struct usbnet *usbdev = priv->usbdev;
2392
2393         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2394
2395         priv->connected = false;
2396         memset(priv->bssid, 0, ETH_ALEN);
2397
2398         return deauthenticate(usbdev);
2399 }
2400
2401 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2402         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2403 {
2404         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2405         struct usbnet *usbdev = priv->usbdev;
2406
2407         return set_channel(usbdev,
2408                         ieee80211_frequency_to_channel(chan->center_freq));
2409 }
2410
2411 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2412                          u8 key_index, bool pairwise, const u8 *mac_addr,
2413                          struct key_params *params)
2414 {
2415         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2416         struct usbnet *usbdev = priv->usbdev;
2417         __le32 flags;
2418
2419         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2420                    __func__, key_index, mac_addr, params->cipher);
2421
2422         switch (params->cipher) {
2423         case WLAN_CIPHER_SUITE_WEP40:
2424         case WLAN_CIPHER_SUITE_WEP104:
2425                 return add_wep_key(usbdev, params->key, params->key_len,
2426                                                                 key_index);
2427         case WLAN_CIPHER_SUITE_TKIP:
2428         case WLAN_CIPHER_SUITE_CCMP:
2429                 flags = 0;
2430
2431                 if (params->seq && params->seq_len > 0)
2432                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2433                 if (mac_addr)
2434                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2435                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2436
2437                 return add_wpa_key(usbdev, params->key, params->key_len,
2438                                 key_index, mac_addr, params->seq,
2439                                 params->seq_len, params->cipher, flags);
2440         default:
2441                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2442                            __func__, params->cipher);
2443                 return -ENOTSUPP;
2444         }
2445 }
2446
2447 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2448                          u8 key_index, bool pairwise, const u8 *mac_addr)
2449 {
2450         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2451         struct usbnet *usbdev = priv->usbdev;
2452
2453         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2454
2455         return remove_key(usbdev, key_index, mac_addr);
2456 }
2457
2458 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2459                                  u8 key_index, bool unicast, bool multicast)
2460 {
2461         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2462         struct usbnet *usbdev = priv->usbdev;
2463         struct rndis_wlan_encr_key key;
2464
2465         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2466
2467         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2468                 return -ENOENT;
2469
2470         priv->encr_tx_key_index = key_index;
2471
2472         if (is_wpa_key(priv, key_index))
2473                 return 0;
2474
2475         key = priv->encr_keys[key_index];
2476
2477         return add_wep_key(usbdev, key.material, key.len, key_index);
2478 }
2479
2480 static void rndis_fill_station_info(struct usbnet *usbdev,
2481                                                 struct station_info *sinfo)
2482 {
2483         __le32 linkspeed, rssi;
2484         int ret, len;
2485
2486         memset(sinfo, 0, sizeof(*sinfo));
2487
2488         len = sizeof(linkspeed);
2489         ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2490         if (ret == 0) {
2491                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2492                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2493         }
2494
2495         len = sizeof(rssi);
2496         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2497                               &rssi, &len);
2498         if (ret == 0) {
2499                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2500                 sinfo->filled |= STATION_INFO_SIGNAL;
2501         }
2502 }
2503
2504 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2505                                         u8 *mac, struct station_info *sinfo)
2506 {
2507         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2508         struct usbnet *usbdev = priv->usbdev;
2509
2510         if (!ether_addr_equal(priv->bssid, mac))
2511                 return -ENOENT;
2512
2513         rndis_fill_station_info(usbdev, sinfo);
2514
2515         return 0;
2516 }
2517
2518 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2519                                int idx, u8 *mac, struct station_info *sinfo)
2520 {
2521         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2522         struct usbnet *usbdev = priv->usbdev;
2523
2524         if (idx != 0)
2525                 return -ENOENT;
2526
2527         memcpy(mac, priv->bssid, ETH_ALEN);
2528
2529         rndis_fill_station_info(usbdev, sinfo);
2530
2531         return 0;
2532 }
2533
2534 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2535                                 struct cfg80211_pmksa *pmksa)
2536 {
2537         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2538         struct usbnet *usbdev = priv->usbdev;
2539         struct ndis_80211_pmkid *pmkids;
2540         u32 *tmp = (u32 *)pmksa->pmkid;
2541
2542         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2543                         pmksa->bssid,
2544                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2545                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2546
2547         pmkids = get_device_pmkids(usbdev);
2548         if (IS_ERR(pmkids)) {
2549                 /* couldn't read PMKID cache from device */
2550                 return PTR_ERR(pmkids);
2551         }
2552
2553         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2554         if (IS_ERR(pmkids)) {
2555                 /* not found, list full, etc */
2556                 return PTR_ERR(pmkids);
2557         }
2558
2559         return set_device_pmkids(usbdev, pmkids);
2560 }
2561
2562 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2563                                 struct cfg80211_pmksa *pmksa)
2564 {
2565         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2566         struct usbnet *usbdev = priv->usbdev;
2567         struct ndis_80211_pmkid *pmkids;
2568         u32 *tmp = (u32 *)pmksa->pmkid;
2569
2570         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2571                         pmksa->bssid,
2572                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2573                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2574
2575         pmkids = get_device_pmkids(usbdev);
2576         if (IS_ERR(pmkids)) {
2577                 /* Couldn't read PMKID cache from device */
2578                 return PTR_ERR(pmkids);
2579         }
2580
2581         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2582         if (IS_ERR(pmkids)) {
2583                 /* not found, etc */
2584                 return PTR_ERR(pmkids);
2585         }
2586
2587         return set_device_pmkids(usbdev, pmkids);
2588 }
2589
2590 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2591 {
2592         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2593         struct usbnet *usbdev = priv->usbdev;
2594         struct ndis_80211_pmkid pmkid;
2595
2596         netdev_dbg(usbdev->net, "%s()\n", __func__);
2597
2598         memset(&pmkid, 0, sizeof(pmkid));
2599
2600         pmkid.length = cpu_to_le32(sizeof(pmkid));
2601         pmkid.bssid_info_count = cpu_to_le32(0);
2602
2603         return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2604                              &pmkid, sizeof(pmkid));
2605 }
2606
2607 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2608                                 bool enabled, int timeout)
2609 {
2610         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2611         struct usbnet *usbdev = priv->usbdev;
2612         int power_mode;
2613         __le32 mode;
2614         int ret;
2615
2616         if (priv->device_type != RNDIS_BCM4320B)
2617                 return -ENOTSUPP;
2618
2619         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2620                                 enabled ? "enabled" : "disabled",
2621                                 timeout);
2622
2623         if (enabled)
2624                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2625         else
2626                 power_mode = NDIS_80211_POWER_MODE_CAM;
2627
2628         if (power_mode == priv->power_mode)
2629                 return 0;
2630
2631         priv->power_mode = power_mode;
2632
2633         mode = cpu_to_le32(power_mode);
2634         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2635                             &mode, sizeof(mode));
2636
2637         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2638                                 __func__, ret);
2639
2640         return ret;
2641 }
2642
2643 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2644                                         struct net_device *dev,
2645                                         s32 rssi_thold, u32 rssi_hyst)
2646 {
2647         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2648
2649         priv->cqm_rssi_thold = rssi_thold;
2650         priv->cqm_rssi_hyst = rssi_hyst;
2651         priv->last_cqm_event_rssi = 0;
2652
2653         return 0;
2654 }
2655
2656 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2657                                            struct ndis_80211_assoc_info *info)
2658 {
2659         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2660         struct ieee80211_channel *channel;
2661         struct ndis_80211_ssid ssid;
2662         struct cfg80211_bss *bss;
2663         s32 signal;
2664         u64 timestamp;
2665         u16 capability;
2666         u32 beacon_period = 0;
2667         __le32 rssi;
2668         u8 ie_buf[34];
2669         int len, ret, ie_len;
2670
2671         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2672         len = sizeof(rssi);
2673         rssi = 0;
2674         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2675                               &rssi, &len);
2676         signal = level_to_qual(le32_to_cpu(rssi));
2677
2678         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2679                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2680                    level_to_qual(le32_to_cpu(rssi)));
2681
2682         /* Get AP capabilities */
2683         if (info) {
2684                 capability = le16_to_cpu(info->resp_ie.capa);
2685         } else {
2686                 /* Set atleast ESS/IBSS capability */
2687                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2688                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2689         }
2690
2691         /* Get channel and beacon interval */
2692         channel = get_current_channel(usbdev, &beacon_period);
2693         if (!channel) {
2694                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2695                                         __func__);
2696                 return;
2697         }
2698
2699         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2700         len = sizeof(ssid);
2701         memset(&ssid, 0, sizeof(ssid));
2702         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2703                               &ssid, &len);
2704         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2705                                 "'%.32s'\n", __func__, ret,
2706                                 le32_to_cpu(ssid.length), ssid.essid);
2707
2708         if (le32_to_cpu(ssid.length) > 32)
2709                 ssid.length = cpu_to_le32(32);
2710
2711         ie_buf[0] = WLAN_EID_SSID;
2712         ie_buf[1] = le32_to_cpu(ssid.length);
2713         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2714
2715         ie_len = le32_to_cpu(ssid.length) + 2;
2716
2717         /* no tsf */
2718         timestamp = 0;
2719
2720         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2721                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2722                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2723                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2724                 ssid.essid, signal);
2725
2726         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2727                 timestamp, capability, beacon_period, ie_buf, ie_len,
2728                 signal, GFP_KERNEL);
2729         cfg80211_put_bss(bss);
2730 }
2731
2732 /*
2733  * workers, indication handlers, device poller
2734  */
2735 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2736 {
2737         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2738         struct ndis_80211_assoc_info *info = NULL;
2739         u8 bssid[ETH_ALEN];
2740         unsigned int resp_ie_len, req_ie_len;
2741         unsigned int offset;
2742         u8 *req_ie, *resp_ie;
2743         int ret;
2744         bool roamed = false;
2745         bool match_bss;
2746
2747         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2748                 /* received media connect indication while connected, either
2749                  * device reassociated with same AP or roamed to new. */
2750                 roamed = true;
2751         }
2752
2753         req_ie_len = 0;
2754         resp_ie_len = 0;
2755         req_ie = NULL;
2756         resp_ie = NULL;
2757
2758         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2759                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2760                 if (!info) {
2761                         /* No memory? Try resume work later */
2762                         set_bit(WORK_LINK_UP, &priv->work_pending);
2763                         queue_work(priv->workqueue, &priv->work);
2764                         return;
2765                 }
2766
2767                 /* Get association info IEs from device. */
2768                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2769                 if (!ret) {
2770                         req_ie_len = le32_to_cpu(info->req_ie_length);
2771                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2772                                 req_ie_len = CONTROL_BUFFER_SIZE;
2773                         if (req_ie_len != 0) {
2774                                 offset = le32_to_cpu(info->offset_req_ies);
2775
2776                                 if (offset > CONTROL_BUFFER_SIZE)
2777                                         offset = CONTROL_BUFFER_SIZE;
2778
2779                                 req_ie = (u8 *)info + offset;
2780
2781                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2782                                         req_ie_len =
2783                                                 CONTROL_BUFFER_SIZE - offset;
2784                         }
2785
2786                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2787                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2788                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2789                         if (resp_ie_len != 0) {
2790                                 offset = le32_to_cpu(info->offset_resp_ies);
2791
2792                                 if (offset > CONTROL_BUFFER_SIZE)
2793                                         offset = CONTROL_BUFFER_SIZE;
2794
2795                                 resp_ie = (u8 *)info + offset;
2796
2797                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2798                                         resp_ie_len =
2799                                                 CONTROL_BUFFER_SIZE - offset;
2800                         }
2801                 } else {
2802                         /* Since rndis_wlan_craft_connected_bss() might use info
2803                          * later and expects info to contain valid data if
2804                          * non-null, free info and set NULL here.
2805                          */
2806                         kfree(info);
2807                         info = NULL;
2808                 }
2809         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2810                 return;
2811
2812         ret = get_bssid(usbdev, bssid);
2813         if (ret < 0)
2814                 memset(bssid, 0, sizeof(bssid));
2815
2816         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2817                    bssid, roamed ? " roamed" : "");
2818
2819         /* Internal bss list in device should contain at least the currently
2820          * connected bss and we can get it to cfg80211 with
2821          * rndis_check_bssid_list().
2822          *
2823          * NDIS spec says: "If the device is associated, but the associated
2824          *  BSSID is not in its BSSID scan list, then the driver must add an
2825          *  entry for the BSSID at the end of the data that it returns in
2826          *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2827          *
2828          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2829          */
2830         match_bss = false;
2831         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2832
2833         if (!is_zero_ether_addr(bssid) && !match_bss) {
2834                 /* Couldn't get bss from device, we need to manually craft bss
2835                  * for cfg80211.
2836                  */
2837                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2838         }
2839
2840         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2841                 if (!roamed)
2842                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2843                                                 req_ie_len, resp_ie,
2844                                                 resp_ie_len, 0, GFP_KERNEL);
2845                 else
2846                         cfg80211_roamed(usbdev->net,
2847                                         get_current_channel(usbdev, NULL),
2848                                         bssid, req_ie, req_ie_len,
2849                                         resp_ie, resp_ie_len, GFP_KERNEL);
2850         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2851                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2852
2853         if (info != NULL)
2854                 kfree(info);
2855
2856         priv->connected = true;
2857         memcpy(priv->bssid, bssid, ETH_ALEN);
2858
2859         usbnet_resume_rx(usbdev);
2860         netif_carrier_on(usbdev->net);
2861 }
2862
2863 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2864 {
2865         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2866
2867         if (priv->connected) {
2868                 priv->connected = false;
2869                 memset(priv->bssid, 0, ETH_ALEN);
2870
2871                 deauthenticate(usbdev);
2872
2873                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2874         }
2875
2876         netif_carrier_off(usbdev->net);
2877 }
2878
2879 static void rndis_wlan_worker(struct work_struct *work)
2880 {
2881         struct rndis_wlan_private *priv =
2882                 container_of(work, struct rndis_wlan_private, work);
2883         struct usbnet *usbdev = priv->usbdev;
2884
2885         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2886                 rndis_wlan_do_link_up_work(usbdev);
2887
2888         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2889                 rndis_wlan_do_link_down_work(usbdev);
2890
2891         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2892                 set_multicast_list(usbdev);
2893 }
2894
2895 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2896 {
2897         struct usbnet *usbdev = netdev_priv(dev);
2898         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2899
2900         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2901                 return;
2902
2903         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2904         queue_work(priv->workqueue, &priv->work);
2905 }
2906
2907 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2908                                 struct ndis_80211_status_indication *indication,
2909                                 int len)
2910 {
2911         u8 *buf;
2912         const char *type;
2913         int flags, buflen, key_id;
2914         bool pairwise_error, group_error;
2915         struct ndis_80211_auth_request *auth_req;
2916         enum nl80211_key_type key_type;
2917
2918         /* must have at least one array entry */
2919         if (len < offsetof(struct ndis_80211_status_indication, u) +
2920                                 sizeof(struct ndis_80211_auth_request)) {
2921                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2922                             len);
2923                 return;
2924         }
2925
2926         buf = (void *)&indication->u.auth_request[0];
2927         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2928
2929         while (buflen >= sizeof(*auth_req)) {
2930                 auth_req = (void *)buf;
2931                 type = "unknown";
2932                 flags = le32_to_cpu(auth_req->flags);
2933                 pairwise_error = false;
2934                 group_error = false;
2935
2936                 if (flags & 0x1)
2937                         type = "reauth request";
2938                 if (flags & 0x2)
2939                         type = "key update request";
2940                 if (flags & 0x6) {
2941                         pairwise_error = true;
2942                         type = "pairwise_error";
2943                 }
2944                 if (flags & 0xe) {
2945                         group_error = true;
2946                         type = "group_error";
2947                 }
2948
2949                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2950                             type, le32_to_cpu(auth_req->flags));
2951
2952                 if (pairwise_error) {
2953                         key_type = NL80211_KEYTYPE_PAIRWISE;
2954                         key_id = -1;
2955
2956                         cfg80211_michael_mic_failure(usbdev->net,
2957                                                         auth_req->bssid,
2958                                                         key_type, key_id, NULL,
2959                                                         GFP_KERNEL);
2960                 }
2961
2962                 if (group_error) {
2963                         key_type = NL80211_KEYTYPE_GROUP;
2964                         key_id = -1;
2965
2966                         cfg80211_michael_mic_failure(usbdev->net,
2967                                                         auth_req->bssid,
2968                                                         key_type, key_id, NULL,
2969                                                         GFP_KERNEL);
2970                 }
2971
2972                 buflen -= le32_to_cpu(auth_req->length);
2973                 buf += le32_to_cpu(auth_req->length);
2974         }
2975 }
2976
2977 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2978                                 struct ndis_80211_status_indication *indication,
2979                                 int len)
2980 {
2981         struct ndis_80211_pmkid_cand_list *cand_list;
2982         int list_len, expected_len, i;
2983
2984         if (len < offsetof(struct ndis_80211_status_indication, u) +
2985                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2986                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2987                             len);
2988                 return;
2989         }
2990
2991         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2992                         sizeof(struct ndis_80211_pmkid_candidate);
2993         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2994                         offsetof(struct ndis_80211_status_indication, u);
2995
2996         if (len < expected_len) {
2997                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2998                             len, expected_len);
2999                 return;
3000         }
3001
3002         cand_list = &indication->u.cand_list;
3003
3004         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
3005                     le32_to_cpu(cand_list->version),
3006                     le32_to_cpu(cand_list->num_candidates));
3007
3008         if (le32_to_cpu(cand_list->version) != 1)
3009                 return;
3010
3011         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3012                 struct ndis_80211_pmkid_candidate *cand =
3013                                                 &cand_list->candidate_list[i];
3014                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3015
3016                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3017                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3018
3019                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3020                                                 preauth, GFP_ATOMIC);
3021         }
3022 }
3023
3024 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3025                         struct rndis_indicate *msg, int buflen)
3026 {
3027         struct ndis_80211_status_indication *indication;
3028         unsigned int len, offset;
3029
3030         offset = offsetof(struct rndis_indicate, status) +
3031                         le32_to_cpu(msg->offset);
3032         len = le32_to_cpu(msg->length);
3033
3034         if (len < 8) {
3035                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3036                             len);
3037                 return;
3038         }
3039
3040         if (len > buflen || offset > buflen || offset + len > buflen) {
3041                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3042                             offset + len, buflen);
3043                 return;
3044         }
3045
3046         indication = (void *)((u8 *)msg + offset);
3047
3048         switch (le32_to_cpu(indication->status_type)) {
3049         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3050                 netdev_info(usbdev->net, "radio state indication: %i\n",
3051                             le32_to_cpu(indication->u.radio_status));
3052                 return;
3053
3054         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3055                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3056                             le32_to_cpu(indication->u.media_stream_mode));
3057                 return;
3058
3059         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3060                 rndis_wlan_auth_indication(usbdev, indication, len);
3061                 return;
3062
3063         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3064                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3065                 return;
3066
3067         default:
3068                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3069                             le32_to_cpu(indication->status_type));
3070         }
3071 }
3072
3073 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3074 {
3075         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3076         struct rndis_indicate *msg = ind;
3077
3078         switch (le32_to_cpu(msg->status)) {
3079         case RNDIS_STATUS_MEDIA_CONNECT:
3080                 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3081                         /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3082                          * "media connect" indications which confuses driver
3083                          * and userspace to think that device is
3084                          * roaming/reassociating when it isn't.
3085                          */
3086                         netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3087                         return;
3088                 }
3089
3090                 usbnet_pause_rx(usbdev);
3091
3092                 netdev_info(usbdev->net, "media connect\n");
3093
3094                 /* queue work to avoid recursive calls into rndis_command */
3095                 set_bit(WORK_LINK_UP, &priv->work_pending);
3096                 queue_work(priv->workqueue, &priv->work);
3097                 break;
3098
3099         case RNDIS_STATUS_MEDIA_DISCONNECT:
3100                 netdev_info(usbdev->net, "media disconnect\n");
3101
3102                 /* queue work to avoid recursive calls into rndis_command */
3103                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3104                 queue_work(priv->workqueue, &priv->work);
3105                 break;
3106
3107         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3108                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3109                 break;
3110
3111         default:
3112                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3113                             le32_to_cpu(msg->status));
3114                 break;
3115         }
3116 }
3117
3118 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3119 {
3120         struct {
3121                 __le32  num_items;
3122                 __le32  items[8];
3123         } networks_supported;
3124         struct ndis_80211_capability *caps;
3125         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3126         int len, retval, i, n;
3127         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3128
3129         /* determine supported modes */
3130         len = sizeof(networks_supported);
3131         retval = rndis_query_oid(usbdev,
3132                                  RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3133                                  &networks_supported, &len);
3134         if (retval >= 0) {
3135                 n = le32_to_cpu(networks_supported.num_items);
3136                 if (n > 8)
3137                         n = 8;
3138                 for (i = 0; i < n; i++) {
3139                         switch (le32_to_cpu(networks_supported.items[i])) {
3140                         case NDIS_80211_TYPE_FREQ_HOP:
3141                         case NDIS_80211_TYPE_DIRECT_SEQ:
3142                                 priv->caps |= CAP_MODE_80211B;
3143                                 break;
3144                         case NDIS_80211_TYPE_OFDM_A:
3145                                 priv->caps |= CAP_MODE_80211A;
3146                                 break;
3147                         case NDIS_80211_TYPE_OFDM_G:
3148                                 priv->caps |= CAP_MODE_80211G;
3149                                 break;
3150                         }
3151                 }
3152         }
3153
3154         /* get device 802.11 capabilities, number of PMKIDs */
3155         caps = (struct ndis_80211_capability *)caps_buf;
3156         len = sizeof(caps_buf);
3157         retval = rndis_query_oid(usbdev,
3158                                  RNDIS_OID_802_11_CAPABILITY,
3159                                  caps, &len);
3160         if (retval >= 0) {
3161                 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3162                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3163                                 le32_to_cpu(caps->length),
3164                                 le32_to_cpu(caps->version),
3165                                 le32_to_cpu(caps->num_pmkids),
3166                                 le32_to_cpu(caps->num_auth_encr_pair));
3167                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3168         } else
3169                 wiphy->max_num_pmkids = 0;
3170
3171         return retval;
3172 }
3173
3174 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3175 {
3176         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3177         enum nl80211_cqm_rssi_threshold_event event;
3178         int thold, hyst, last_event;
3179
3180         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3181                 return;
3182         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3183                 return;
3184
3185         last_event = priv->last_cqm_event_rssi;
3186         thold = priv->cqm_rssi_thold;
3187         hyst = priv->cqm_rssi_hyst;
3188
3189         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3190                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3191         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3192                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3193         else
3194                 return;
3195
3196         priv->last_cqm_event_rssi = rssi;
3197         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3198 }
3199
3200 #define DEVICE_POLLER_JIFFIES (HZ)
3201 static void rndis_device_poller(struct work_struct *work)
3202 {
3203         struct rndis_wlan_private *priv =
3204                 container_of(work, struct rndis_wlan_private,
3205                                                         dev_poller_work.work);
3206         struct usbnet *usbdev = priv->usbdev;
3207         __le32 rssi, tmp;
3208         int len, ret, j;
3209         int update_jiffies = DEVICE_POLLER_JIFFIES;
3210         void *buf;
3211
3212         /* Only check/do workaround when connected. Calling is_associated()
3213          * also polls device with rndis_command() and catches for media link
3214          * indications.
3215          */
3216         if (!is_associated(usbdev)) {
3217                 /* Workaround bad scanning in BCM4320a devices with active
3218                  * background scanning when not associated.
3219                  */
3220                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3221                     !priv->scan_request) {
3222                         /* Get previous scan results */
3223                         rndis_check_bssid_list(usbdev, NULL, NULL);
3224
3225                         /* Initiate new scan */
3226                         rndis_start_bssid_list_scan(usbdev);
3227                 }
3228
3229                 goto end;
3230         }
3231
3232         len = sizeof(rssi);
3233         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3234                               &rssi, &len);
3235         if (ret == 0) {
3236                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3237                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3238         }
3239
3240         netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3241                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3242
3243         /* Workaround transfer stalls on poor quality links.
3244          * TODO: find right way to fix these stalls (as stalls do not happen
3245          * with ndiswrapper/windows driver). */
3246         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3247                 /* Decrease stats worker interval to catch stalls.
3248                  * faster. Faster than 400-500ms causes packet loss,
3249                  * Slower doesn't catch stalls fast enough.
3250                  */
3251                 j = msecs_to_jiffies(priv->param_workaround_interval);
3252                 if (j > DEVICE_POLLER_JIFFIES)
3253                         j = DEVICE_POLLER_JIFFIES;
3254                 else if (j <= 0)
3255                         j = 1;
3256                 update_jiffies = j;
3257
3258                 /* Send scan OID. Use of both OIDs is required to get device
3259                  * working.
3260                  */
3261                 tmp = cpu_to_le32(1);
3262                 rndis_set_oid(usbdev,
3263                               RNDIS_OID_802_11_BSSID_LIST_SCAN,
3264                               &tmp, sizeof(tmp));
3265
3266                 len = CONTROL_BUFFER_SIZE;
3267                 buf = kmalloc(len, GFP_KERNEL);
3268                 if (!buf)
3269                         goto end;
3270
3271                 rndis_query_oid(usbdev,
3272                                 RNDIS_OID_802_11_BSSID_LIST,
3273                                 buf, &len);
3274                 kfree(buf);
3275         }
3276
3277 end:
3278         if (update_jiffies >= HZ)
3279                 update_jiffies = round_jiffies_relative(update_jiffies);
3280         else {
3281                 j = round_jiffies_relative(update_jiffies);
3282                 if (abs(j - update_jiffies) <= 10)
3283                         update_jiffies = j;
3284         }
3285
3286         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3287                                                                 update_jiffies);
3288 }
3289
3290 /*
3291  * driver/device initialization
3292  */
3293 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3294 {
3295         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3296
3297         priv->device_type = device_type;
3298
3299         priv->param_country[0] = modparam_country[0];
3300         priv->param_country[1] = modparam_country[1];
3301         priv->param_country[2] = 0;
3302         priv->param_frameburst   = modparam_frameburst;
3303         priv->param_afterburner  = modparam_afterburner;
3304         priv->param_power_save   = modparam_power_save;
3305         priv->param_power_output = modparam_power_output;
3306         priv->param_roamtrigger  = modparam_roamtrigger;
3307         priv->param_roamdelta    = modparam_roamdelta;
3308
3309         priv->param_country[0] = toupper(priv->param_country[0]);
3310         priv->param_country[1] = toupper(priv->param_country[1]);
3311         /* doesn't support EU as country code, use FI instead */
3312         if (!strcmp(priv->param_country, "EU"))
3313                 strcpy(priv->param_country, "FI");
3314
3315         if (priv->param_power_save < 0)
3316                 priv->param_power_save = 0;
3317         else if (priv->param_power_save > 2)
3318                 priv->param_power_save = 2;
3319
3320         if (priv->param_power_output < 0)
3321                 priv->param_power_output = 0;
3322         else if (priv->param_power_output > 3)
3323                 priv->param_power_output = 3;
3324
3325         if (priv->param_roamtrigger < -80)
3326                 priv->param_roamtrigger = -80;
3327         else if (priv->param_roamtrigger > -60)
3328                 priv->param_roamtrigger = -60;
3329
3330         if (priv->param_roamdelta < 0)
3331                 priv->param_roamdelta = 0;
3332         else if (priv->param_roamdelta > 2)
3333                 priv->param_roamdelta = 2;
3334
3335         if (modparam_workaround_interval < 0)
3336                 priv->param_workaround_interval = 500;
3337         else
3338                 priv->param_workaround_interval = modparam_workaround_interval;
3339 }
3340
3341 static int unknown_early_init(struct usbnet *usbdev)
3342 {
3343         /* copy module parameters for unknown so that iwconfig reports txpower
3344          * and workaround parameter is copied to private structure correctly.
3345          */
3346         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3347
3348         /* This is unknown device, so do not try set configuration parameters.
3349          */
3350
3351         return 0;
3352 }
3353
3354 static int bcm4320a_early_init(struct usbnet *usbdev)
3355 {
3356         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3357          * and workaround parameter is copied to private structure correctly.
3358          */
3359         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3360
3361         /* bcm4320a doesn't handle configuration parameters well. Try
3362          * set any and you get partially zeroed mac and broken device.
3363          */
3364
3365         return 0;
3366 }
3367
3368 static int bcm4320b_early_init(struct usbnet *usbdev)
3369 {
3370         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3371         char buf[8];
3372
3373         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3374
3375         /* Early initialization settings, setting these won't have effect
3376          * if called after generic_rndis_bind().
3377          */
3378
3379         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3380         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3381                                         priv->param_frameburst ? "1" : "0");
3382         rndis_set_config_parameter_str(usbdev, "Afterburner",
3383                                         priv->param_afterburner ? "1" : "0");
3384         sprintf(buf, "%d", priv->param_power_save);
3385         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3386         sprintf(buf, "%d", priv->param_power_output);
3387         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3388         sprintf(buf, "%d", priv->param_roamtrigger);
3389         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3390         sprintf(buf, "%d", priv->param_roamdelta);
3391         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3392
3393         return 0;
3394 }
3395
3396 /* same as rndis_netdev_ops but with local multicast handler */
3397 static const struct net_device_ops rndis_wlan_netdev_ops = {
3398         .ndo_open               = usbnet_open,
3399         .ndo_stop               = usbnet_stop,
3400         .ndo_start_xmit         = usbnet_start_xmit,
3401         .ndo_tx_timeout         = usbnet_tx_timeout,
3402         .ndo_set_mac_address    = eth_mac_addr,
3403         .ndo_validate_addr      = eth_validate_addr,
3404         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3405 };
3406
3407 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3408 {
3409         struct wiphy *wiphy;
3410         struct rndis_wlan_private *priv;
3411         int retval, len;
3412         __le32 tmp;
3413
3414         /* allocate wiphy and rndis private data
3415          * NOTE: We only support a single virtual interface, so wiphy
3416          * and wireless_dev are somewhat synonymous for this device.
3417          */
3418         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3419         if (!wiphy)
3420                 return -ENOMEM;
3421
3422         priv = wiphy_priv(wiphy);
3423         usbdev->net->ieee80211_ptr = &priv->wdev;
3424         priv->wdev.wiphy = wiphy;
3425         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3426
3427         /* These have to be initialized before calling generic_rndis_bind().
3428          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3429          */
3430         usbdev->driver_priv = priv;
3431         priv->usbdev = usbdev;
3432
3433         mutex_init(&priv->command_lock);
3434
3435         /* because rndis_command() sleeps we need to use workqueue */
3436         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3437         INIT_WORK(&priv->work, rndis_wlan_worker);
3438         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3439         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3440
3441         /* try bind rndis_host */
3442         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3443         if (retval < 0)
3444                 goto fail;
3445
3446         /* generic_rndis_bind set packet filter to multicast_all+
3447          * promisc mode which doesn't work well for our devices (device
3448          * picks up rssi to closest station instead of to access point).
3449          *
3450          * rndis_host wants to avoid all OID as much as possible
3451          * so do promisc/multicast handling in rndis_wlan.
3452          */
3453         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3454
3455         tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3456         retval = rndis_set_oid(usbdev,
3457                                RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3458                                &tmp, sizeof(tmp));
3459
3460         len = sizeof(tmp);
3461         retval = rndis_query_oid(usbdev,
3462                                  RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3463                                  &tmp, &len);
3464         priv->multicast_size = le32_to_cpu(tmp);
3465         if (retval < 0 || priv->multicast_size < 0)
3466                 priv->multicast_size = 0;
3467         if (priv->multicast_size > 0)
3468                 usbdev->net->flags |= IFF_MULTICAST;
3469         else
3470                 usbdev->net->flags &= ~IFF_MULTICAST;
3471
3472         /* fill-out wiphy structure and register w/ cfg80211 */
3473         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3474         wiphy->privid = rndis_wiphy_privid;
3475         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3476                                         | BIT(NL80211_IFTYPE_ADHOC);
3477         wiphy->max_scan_ssids = 1;
3478
3479         /* TODO: fill-out band/encr information based on priv->caps */
3480         rndis_wlan_get_caps(usbdev, wiphy);
3481
3482         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3483         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3484         priv->band.channels = priv->channels;
3485         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3486         priv->band.bitrates = priv->rates;
3487         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3488         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3489         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3490
3491         memcpy(priv->cipher_suites, rndis_cipher_suites,
3492                                                 sizeof(rndis_cipher_suites));
3493         wiphy->cipher_suites = priv->cipher_suites;
3494         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3495
3496         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3497
3498         if (wiphy_register(wiphy)) {
3499                 retval = -ENODEV;
3500                 goto fail;
3501         }
3502
3503         set_default_iw_params(usbdev);
3504
3505         priv->power_mode = -1;
3506
3507         /* set default rts/frag */
3508         rndis_set_wiphy_params(wiphy,
3509                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3510
3511         /* turn radio off on init */
3512         priv->radio_on = false;
3513         disassociate(usbdev, false);
3514         netif_carrier_off(usbdev->net);
3515
3516         return 0;
3517
3518 fail:
3519         cancel_delayed_work_sync(&priv->dev_poller_work);
3520         cancel_delayed_work_sync(&priv->scan_work);
3521         cancel_work_sync(&priv->work);
3522         flush_workqueue(priv->workqueue);
3523         destroy_workqueue(priv->workqueue);
3524
3525         wiphy_free(wiphy);
3526         return retval;
3527 }
3528
3529 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3530 {
3531         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3532
3533         /* turn radio off */
3534         disassociate(usbdev, false);
3535
3536         cancel_delayed_work_sync(&priv->dev_poller_work);
3537         cancel_delayed_work_sync(&priv->scan_work);
3538         cancel_work_sync(&priv->work);
3539         flush_workqueue(priv->workqueue);
3540         destroy_workqueue(priv->workqueue);
3541
3542         rndis_unbind(usbdev, intf);
3543
3544         wiphy_unregister(priv->wdev.wiphy);
3545         wiphy_free(priv->wdev.wiphy);
3546 }
3547
3548 static int rndis_wlan_reset(struct usbnet *usbdev)
3549 {
3550         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3551         int retval;
3552
3553         netdev_dbg(usbdev->net, "%s()\n", __func__);
3554
3555         retval = rndis_reset(usbdev);
3556         if (retval)
3557                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3558
3559         /* rndis_reset cleared multicast list, so restore here.
3560            (set_multicast_list() also turns on current packet filter) */
3561         set_multicast_list(usbdev);
3562
3563         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3564                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3565
3566         return deauthenticate(usbdev);
3567 }
3568
3569 static int rndis_wlan_stop(struct usbnet *usbdev)
3570 {
3571         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3572         int retval;
3573         __le32 filter;
3574
3575         netdev_dbg(usbdev->net, "%s()\n", __func__);
3576
3577         retval = disassociate(usbdev, false);
3578
3579         priv->work_pending = 0;
3580         cancel_delayed_work_sync(&priv->dev_poller_work);
3581         cancel_delayed_work_sync(&priv->scan_work);
3582         cancel_work_sync(&priv->work);
3583         flush_workqueue(priv->workqueue);
3584
3585         if (priv->scan_request) {
3586                 cfg80211_scan_done(priv->scan_request, true);
3587                 priv->scan_request = NULL;
3588         }
3589
3590         /* Set current packet filter zero to block receiving data packets from
3591            device. */
3592         filter = 0;
3593         rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3594                                                                 sizeof(filter));
3595
3596         return retval;
3597 }
3598
3599 static const struct driver_info bcm4320b_info = {
3600         .description =  "Wireless RNDIS device, BCM4320b based",
3601         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3602                                 FLAG_AVOID_UNLINK_URBS,
3603         .bind =         rndis_wlan_bind,
3604         .unbind =       rndis_wlan_unbind,
3605         .status =       rndis_status,
3606         .rx_fixup =     rndis_rx_fixup,
3607         .tx_fixup =     rndis_tx_fixup,
3608         .reset =        rndis_wlan_reset,
3609         .stop =         rndis_wlan_stop,
3610         .early_init =   bcm4320b_early_init,
3611         .indication =   rndis_wlan_indication,
3612 };
3613
3614 static const struct driver_info bcm4320a_info = {
3615         .description =  "Wireless RNDIS device, BCM4320a based",
3616         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3617                                 FLAG_AVOID_UNLINK_URBS,
3618         .bind =         rndis_wlan_bind,
3619         .unbind =       rndis_wlan_unbind,
3620         .status =       rndis_status,
3621         .rx_fixup =     rndis_rx_fixup,
3622         .tx_fixup =     rndis_tx_fixup,
3623         .reset =        rndis_wlan_reset,
3624         .stop =         rndis_wlan_stop,
3625         .early_init =   bcm4320a_early_init,
3626         .indication =   rndis_wlan_indication,
3627 };
3628
3629 static const struct driver_info rndis_wlan_info = {
3630         .description =  "Wireless RNDIS device",
3631         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3632                                 FLAG_AVOID_UNLINK_URBS,
3633         .bind =         rndis_wlan_bind,
3634         .unbind =       rndis_wlan_unbind,
3635         .status =       rndis_status,
3636         .rx_fixup =     rndis_rx_fixup,
3637         .tx_fixup =     rndis_tx_fixup,
3638         .reset =        rndis_wlan_reset,
3639         .stop =         rndis_wlan_stop,
3640         .early_init =   unknown_early_init,
3641         .indication =   rndis_wlan_indication,
3642 };
3643
3644 /*-------------------------------------------------------------------------*/
3645
3646 static const struct usb_device_id products [] = {
3647 #define RNDIS_MASTER_INTERFACE \
3648         .bInterfaceClass        = USB_CLASS_COMM, \
3649         .bInterfaceSubClass     = 2 /* ACM */, \
3650         .bInterfaceProtocol     = 0x0ff
3651
3652 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3653  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3654  */
3655 {
3656         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3657                           | USB_DEVICE_ID_MATCH_DEVICE,
3658         .idVendor               = 0x0411,
3659         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
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               = 0x0baf,
3666         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
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               = 0x050d,
3673         .idProduct              = 0x011b,       /* Belkin F5D7051 */
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               = 0x1799,       /* Belkin has two vendor ids */
3680         .idProduct              = 0x011b,       /* Belkin F5D7051 */
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               = 0x13b1,
3687         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
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               = 0x13b1,
3694         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
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               = 0x0b05,
3701         .idProduct              = 0x1717,       /* Asus WL169gE */
3702         RNDIS_MASTER_INTERFACE,
3703         .driver_info            = (unsigned long) &bcm4320b_info,
3704 }, {
3705         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3706                           | USB_DEVICE_ID_MATCH_DEVICE,
3707         .idVendor               = 0x0a5c,
3708         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3709         RNDIS_MASTER_INTERFACE,
3710         .driver_info            = (unsigned long) &bcm4320b_info,
3711 }, {
3712         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3713                           | USB_DEVICE_ID_MATCH_DEVICE,
3714         .idVendor               = 0x1690,
3715         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3716         RNDIS_MASTER_INTERFACE,
3717         .driver_info            = (unsigned long) &bcm4320b_info,
3718 },
3719 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3720  * parameters available, hardware probably contain older firmware version with
3721  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3722  */
3723 {
3724         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3725                           | USB_DEVICE_ID_MATCH_DEVICE,
3726         .idVendor               = 0x13b1,
3727         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3728         RNDIS_MASTER_INTERFACE,
3729         .driver_info            = (unsigned long) &bcm4320a_info,
3730 }, {
3731         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3732                           | USB_DEVICE_ID_MATCH_DEVICE,
3733         .idVendor               = 0x0baf,
3734         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3735         RNDIS_MASTER_INTERFACE,
3736         .driver_info            = (unsigned long) &bcm4320a_info,
3737 }, {
3738         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3739                           | USB_DEVICE_ID_MATCH_DEVICE,
3740         .idVendor               = 0x0411,
3741         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3742         RNDIS_MASTER_INTERFACE,
3743         .driver_info            = (unsigned long) &bcm4320a_info,
3744 },
3745 /* Generic Wireless RNDIS devices that we don't have exact
3746  * idVendor/idProduct/chip yet.
3747  */
3748 {
3749         /* RNDIS is MSFT's un-official variant of CDC ACM */
3750         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3751         .driver_info = (unsigned long) &rndis_wlan_info,
3752 }, {
3753         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3754         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3755         .driver_info = (unsigned long) &rndis_wlan_info,
3756 },
3757         { },            // END
3758 };
3759 MODULE_DEVICE_TABLE(usb, products);
3760
3761 static struct usb_driver rndis_wlan_driver = {
3762         .name =         "rndis_wlan",
3763         .id_table =     products,
3764         .probe =        usbnet_probe,
3765         .disconnect =   usbnet_disconnect,
3766         .suspend =      usbnet_suspend,
3767         .resume =       usbnet_resume,
3768 };
3769
3770 module_usb_driver(rndis_wlan_driver);
3771
3772 MODULE_AUTHOR("Bjorge Dijkstra");
3773 MODULE_AUTHOR("Jussi Kivilinna");
3774 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3775 MODULE_LICENSE("GPL");
3776