drivers/net/wireless/rndis_wlan.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Driver for RNDIS based wireless USB devices.
   4  *
   5  * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
   6  * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi>
   7  *
   8  *  Portions of this file are based on NDISwrapper project,
   9  *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
  10  *  http://ndiswrapper.sourceforge.net/
  11  */
  12
  13 // #define      DEBUG                   // error path messages, extra info
  14 // #define      VERBOSE                 // more; success messages
  15
  16 #include <linux/module.h>
  17 #include <linux/netdevice.h>
  18 #include <linux/etherdevice.h>
  19 #include <linux/ethtool.h>
  20 #include <linux/workqueue.h>
  21 #include <linux/mutex.h>
  22 #include <linux/mii.h>
  23 #include <linux/usb.h>
  24 #include <linux/usb/cdc.h>
  25 #include <linux/ieee80211.h>
  26 #include <linux/if_arp.h>
  27 #include <linux/ctype.h>
  28 #include <linux/spinlock.h>
  29 #include <linux/slab.h>
  30 #include <net/cfg80211.h>
  31 #include <linux/usb/usbnet.h>
  32 #include <linux/usb/rndis_host.h>
  33
  34
  35 /* NOTE: All these are settings for Broadcom chipset */
  36 static char modparam_country[4] = "EU";
  37 module_param_string(country, modparam_country, 4, 0444);
  38 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  39
  40 static int modparam_frameburst = 1;
  41 module_param_named(frameburst, modparam_frameburst, int, 0444);
  42 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  43
  44 static int modparam_afterburner = 0;
  45 module_param_named(afterburner, modparam_afterburner, int, 0444);
  46 MODULE_PARM_DESC(afterburner,
  47         "enable afterburner aka '125 High Speed Mode' (default: off)");
  48
  49 static int modparam_power_save = 0;
  50 module_param_named(power_save, modparam_power_save, int, 0444);
  51 MODULE_PARM_DESC(power_save,
  52         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
  53
  54 static int modparam_power_output = 3;
  55 module_param_named(power_output, modparam_power_output, int, 0444);
  56 MODULE_PARM_DESC(power_output,
  57         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  58
  59 static int modparam_roamtrigger = -70;
  60 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  61 MODULE_PARM_DESC(roamtrigger,
  62         "set roaming dBm trigger: -80=optimize for distance, "
  63                                 "-60=bandwidth (default: -70)");
  64
  65 static int modparam_roamdelta = 1;
  66 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  67 MODULE_PARM_DESC(roamdelta,
  68         "set roaming tendency: 0=aggressive, 1=moderate, "
  69                                 "2=conservative (default: moderate)");
  70
  71 static int modparam_workaround_interval;
  72 module_param_named(workaround_interval, modparam_workaround_interval,
  73                                                         int, 0444);
  74 MODULE_PARM_DESC(workaround_interval,
  75         "set stall workaround interval in msecs (0=disabled) (default: 0)");
  76
  77 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
  78 #define WL_NOISE        -96     /* typical noise level in dBm */
  79 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
  80
  81
  82 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
  83  * based on wireless rndis) has default txpower of 13dBm.
  84  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
  85  *  100% : 20 mW ~ 13dBm
  86  *   75% : 15 mW ~ 12dBm
  87  *   50% : 10 mW ~ 10dBm
  88  *   25% :  5 mW ~  7dBm
  89  */
  90 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
  91 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
  92 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
  93 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
  94
  95 /* Known device types */
  96 #define RNDIS_UNKNOWN   0
  97 #define RNDIS_BCM4320A  1
  98 #define RNDIS_BCM4320B  2
  99
 100
 101 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 102  * slightly modified for datatype endianess, etc
 103  */
 104 #define NDIS_802_11_LENGTH_SSID 32
 105 #define NDIS_802_11_LENGTH_RATES 8
 106 #define NDIS_802_11_LENGTH_RATES_EX 16
 107
 108 enum ndis_80211_net_type {
 109         NDIS_80211_TYPE_FREQ_HOP,
 110         NDIS_80211_TYPE_DIRECT_SEQ,
 111         NDIS_80211_TYPE_OFDM_A,
 112         NDIS_80211_TYPE_OFDM_G
 113 };
 114
 115 enum ndis_80211_net_infra {
 116         NDIS_80211_INFRA_ADHOC,
 117         NDIS_80211_INFRA_INFRA,
 118         NDIS_80211_INFRA_AUTO_UNKNOWN
 119 };
 120
 121 enum ndis_80211_auth_mode {
 122         NDIS_80211_AUTH_OPEN,
 123         NDIS_80211_AUTH_SHARED,
 124         NDIS_80211_AUTH_AUTO_SWITCH,
 125         NDIS_80211_AUTH_WPA,
 126         NDIS_80211_AUTH_WPA_PSK,
 127         NDIS_80211_AUTH_WPA_NONE,
 128         NDIS_80211_AUTH_WPA2,
 129         NDIS_80211_AUTH_WPA2_PSK
 130 };
 131
 132 enum ndis_80211_encr_status {
 133         NDIS_80211_ENCR_WEP_ENABLED,
 134         NDIS_80211_ENCR_DISABLED,
 135         NDIS_80211_ENCR_WEP_KEY_ABSENT,
 136         NDIS_80211_ENCR_NOT_SUPPORTED,
 137         NDIS_80211_ENCR_TKIP_ENABLED,
 138         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 139         NDIS_80211_ENCR_CCMP_ENABLED,
 140         NDIS_80211_ENCR_CCMP_KEY_ABSENT
 141 };
 142
 143 enum ndis_80211_priv_filter {
 144         NDIS_80211_PRIV_ACCEPT_ALL,
 145         NDIS_80211_PRIV_8021X_WEP
 146 };
 147
 148 enum ndis_80211_status_type {
 149         NDIS_80211_STATUSTYPE_AUTHENTICATION,
 150         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 151         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 152         NDIS_80211_STATUSTYPE_RADIOSTATE,
 153 };
 154
 155 enum ndis_80211_media_stream_mode {
 156         NDIS_80211_MEDIA_STREAM_OFF,
 157         NDIS_80211_MEDIA_STREAM_ON
 158 };
 159
 160 enum ndis_80211_radio_status {
 161         NDIS_80211_RADIO_STATUS_ON,
 162         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 163         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 164 };
 165
 166 enum ndis_80211_addkey_bits {
 167         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 168         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 169         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 170         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 171 };
 172
 173 enum ndis_80211_addwep_bits {
 174         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 175         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 176 };
 177
 178 enum ndis_80211_power_mode {
 179         NDIS_80211_POWER_MODE_CAM,
 180         NDIS_80211_POWER_MODE_MAX_PSP,
 181         NDIS_80211_POWER_MODE_FAST_PSP,
 182 };
 183
 184 enum ndis_80211_pmkid_cand_list_flag_bits {
 185         NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
 186 };
 187
 188 struct ndis_80211_auth_request {
 189         __le32 length;
 190         u8 bssid[ETH_ALEN];
 191         u8 padding[2];
 192         __le32 flags;
 193 } __packed;
 194
 195 struct ndis_80211_pmkid_candidate {
 196         u8 bssid[ETH_ALEN];
 197         u8 padding[2];
 198         __le32 flags;
 199 } __packed;
 200
 201 struct ndis_80211_pmkid_cand_list {
 202         __le32 version;
 203         __le32 num_candidates;
 204         struct ndis_80211_pmkid_candidate candidate_list[];
 205 } __packed;
 206
 207 struct ndis_80211_status_indication {
 208         __le32 status_type;
 209         union {
 210                 __le32                                  media_stream_mode;
 211                 __le32                                  radio_status;
 212                 struct ndis_80211_auth_request          auth_request[0];
 213                 struct ndis_80211_pmkid_cand_list       cand_list;
 214         } u;
 215 } __packed;
 216
 217 struct ndis_80211_ssid {
 218         __le32 length;
 219         u8 essid[NDIS_802_11_LENGTH_SSID];
 220 } __packed;
 221
 222 struct ndis_80211_conf_freq_hop {
 223         __le32 length;
 224         __le32 hop_pattern;
 225         __le32 hop_set;
 226         __le32 dwell_time;
 227 } __packed;
 228
 229 struct ndis_80211_conf {
 230         __le32 length;
 231         __le32 beacon_period;
 232         __le32 atim_window;
 233         __le32 ds_config;
 234         struct ndis_80211_conf_freq_hop fh_config;
 235 } __packed;
 236
 237 struct ndis_80211_bssid_ex {
 238         __le32 length;
 239         u8 mac[ETH_ALEN];
 240         u8 padding[2];
 241         struct ndis_80211_ssid ssid;
 242         __le32 privacy;
 243         __le32 rssi;
 244         __le32 net_type;
 245         struct ndis_80211_conf config;
 246         __le32 net_infra;
 247         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 248         __le32 ie_length;
 249         u8 ies[];
 250 } __packed;
 251
 252 struct ndis_80211_bssid_list_ex {
 253         __le32 num_items;
 254         struct ndis_80211_bssid_ex bssid[];
 255 } __packed;
 256
 257 struct ndis_80211_fixed_ies {
 258         u8 timestamp[8];
 259         __le16 beacon_interval;
 260         __le16 capabilities;
 261 } __packed;
 262
 263 struct ndis_80211_wep_key {
 264         __le32 size;
 265         __le32 index;
 266         __le32 length;
 267         u8 material[32];
 268 } __packed;
 269
 270 struct ndis_80211_key {
 271         __le32 size;
 272         __le32 index;
 273         __le32 length;
 274         u8 bssid[ETH_ALEN];
 275         u8 padding[6];
 276         u8 rsc[8];
 277         u8 material[32];
 278 } __packed;
 279
 280 struct ndis_80211_remove_key {
 281         __le32 size;
 282         __le32 index;
 283         u8 bssid[ETH_ALEN];
 284         u8 padding[2];
 285 } __packed;
 286
 287 struct ndis_config_param {
 288         __le32 name_offs;
 289         __le32 name_length;
 290         __le32 type;
 291         __le32 value_offs;
 292         __le32 value_length;
 293 } __packed;
 294
 295 struct ndis_80211_assoc_info {
 296         __le32 length;
 297         __le16 req_ies;
 298         struct req_ie {
 299                 __le16 capa;
 300                 __le16 listen_interval;
 301                 u8 cur_ap_address[ETH_ALEN];
 302         } req_ie;
 303         __le32 req_ie_length;
 304         __le32 offset_req_ies;
 305         __le16 resp_ies;
 306         struct resp_ie {
 307                 __le16 capa;
 308                 __le16 status_code;
 309                 __le16 assoc_id;
 310         } resp_ie;
 311         __le32 resp_ie_length;
 312         __le32 offset_resp_ies;
 313 } __packed;
 314
 315 struct ndis_80211_capability {
 316         __le32 length;
 317         __le32 version;
 318         __le32 num_pmkids;
 319         __le32 num_auth_encr_pair;
 320 } __packed;
 321
 322 struct ndis_80211_bssid_info {
 323         u8 bssid[ETH_ALEN];
 324         u8 pmkid[16];
 325 } __packed;
 326
 327 struct ndis_80211_pmkid {
 328         __le32 length;
 329         __le32 bssid_info_count;
 330         struct ndis_80211_bssid_info bssid_info[];
 331 } __packed;
 332
 333 /*
 334  *  private data
 335  */
 336 #define CAP_MODE_80211A         1
 337 #define CAP_MODE_80211B         2
 338 #define CAP_MODE_80211G         4
 339 #define CAP_MODE_MASK           7
 340
 341 #define WORK_LINK_UP            0
 342 #define WORK_LINK_DOWN          1
 343 #define WORK_SET_MULTICAST_LIST 2
 344
 345 #define RNDIS_WLAN_ALG_NONE     0
 346 #define RNDIS_WLAN_ALG_WEP      (1<<0)
 347 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
 348 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
 349
 350 #define RNDIS_WLAN_NUM_KEYS             4
 351 #define RNDIS_WLAN_KEY_MGMT_NONE        0
 352 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 353 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 354
 355 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 356
 357 static const struct ieee80211_channel rndis_channels[] = {
 358         { .center_freq = 2412 },
 359         { .center_freq = 2417 },
 360         { .center_freq = 2422 },
 361         { .center_freq = 2427 },
 362         { .center_freq = 2432 },
 363         { .center_freq = 2437 },
 364         { .center_freq = 2442 },
 365         { .center_freq = 2447 },
 366         { .center_freq = 2452 },
 367         { .center_freq = 2457 },
 368         { .center_freq = 2462 },
 369         { .center_freq = 2467 },
 370         { .center_freq = 2472 },
 371         { .center_freq = 2484 },
 372 };
 373
 374 static const struct ieee80211_rate rndis_rates[] = {
 375         { .bitrate = 10 },
 376         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 377         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 378         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 379         { .bitrate = 60 },
 380         { .bitrate = 90 },
 381         { .bitrate = 120 },
 382         { .bitrate = 180 },
 383         { .bitrate = 240 },
 384         { .bitrate = 360 },
 385         { .bitrate = 480 },
 386         { .bitrate = 540 }
 387 };
 388
 389 static const u32 rndis_cipher_suites[] = {
 390         WLAN_CIPHER_SUITE_WEP40,
 391         WLAN_CIPHER_SUITE_WEP104,
 392         WLAN_CIPHER_SUITE_TKIP,
 393         WLAN_CIPHER_SUITE_CCMP,
 394 };
 395
 396 struct rndis_wlan_encr_key {
 397         int len;
 398         u32 cipher;
 399         u8 material[32];
 400         u8 bssid[ETH_ALEN];
 401         bool pairwise;
 402         bool tx_key;
 403 };
 404
 405 /* RNDIS device private data */
 406 struct rndis_wlan_private {
 407         struct usbnet *usbdev;
 408
 409         struct wireless_dev wdev;
 410
 411         struct cfg80211_scan_request *scan_request;
 412
 413         struct workqueue_struct *workqueue;
 414         struct delayed_work dev_poller_work;
 415         struct delayed_work scan_work;
 416         struct work_struct work;
 417         struct mutex command_lock;
 418         unsigned long work_pending;
 419         int last_qual;
 420         s32 cqm_rssi_thold;
 421         u32 cqm_rssi_hyst;
 422         int last_cqm_event_rssi;
 423
 424         struct ieee80211_supported_band band;
 425         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 426         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 427         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 428
 429         int device_type;
 430         int caps;
 431         int multicast_size;
 432
 433         /* module parameters */
 434         char param_country[4];
 435         int  param_frameburst;
 436         int  param_afterburner;
 437         int  param_power_save;
 438         int  param_power_output;
 439         int  param_roamtrigger;
 440         int  param_roamdelta;
 441         u32  param_workaround_interval;
 442
 443         /* hardware state */
 444         bool radio_on;
 445         int power_mode;
 446         int infra_mode;
 447         bool connected;
 448         u8 bssid[ETH_ALEN];
 449         u32 current_command_oid;
 450
 451         /* encryption stuff */
 452         u8 encr_tx_key_index;
 453         struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
 454         int  wpa_version;
 455
 456         u8 command_buffer[COMMAND_BUFFER_SIZE];
 457 };
 458
 459 /*
 460  * cfg80211 ops
 461  */
 462 static int rndis_change_virtual_intf(struct wiphy *wiphy,
 463                                         struct net_device *dev,
 464                                         enum nl80211_iftype type,
 465                                         struct vif_params *params);
 466
 467 static int rndis_scan(struct wiphy *wiphy,
 468                         struct cfg80211_scan_request *request);
 469
 470 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 471
 472 static int rndis_set_tx_power(struct wiphy *wiphy,
 473                               struct wireless_dev *wdev,
 474                               enum nl80211_tx_power_setting type,
 475                               int mbm);
 476 static int rndis_get_tx_power(struct wiphy *wiphy,
 477                               struct wireless_dev *wdev,
 478                               int *dbm);
 479
 480 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 481                                 struct cfg80211_connect_params *sme);
 482
 483 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 484                                 u16 reason_code);
 485
 486 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 487                                         struct cfg80211_ibss_params *params);
 488
 489 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 490
 491 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 492                          u8 key_index, bool pairwise, const u8 *mac_addr,
 493                          struct key_params *params);
 494
 495 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 496                          u8 key_index, bool pairwise, const u8 *mac_addr);
 497
 498 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 499                                  u8 key_index, bool unicast, bool multicast);
 500
 501 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 502                              const u8 *mac, struct station_info *sinfo);
 503
 504 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 505                                int idx, u8 *mac, struct station_info *sinfo);
 506
 507 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 508                                 struct cfg80211_pmksa *pmksa);
 509
 510 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 511                                 struct cfg80211_pmksa *pmksa);
 512
 513 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 514
 515 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 516                                 bool enabled, int timeout);
 517
 518 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 519                                         struct net_device *dev,
 520                                         s32 rssi_thold, u32 rssi_hyst);
 521
 522 static const struct cfg80211_ops rndis_config_ops = {
 523         .change_virtual_intf = rndis_change_virtual_intf,
 524         .scan = rndis_scan,
 525         .set_wiphy_params = rndis_set_wiphy_params,
 526         .set_tx_power = rndis_set_tx_power,
 527         .get_tx_power = rndis_get_tx_power,
 528         .connect = rndis_connect,
 529         .disconnect = rndis_disconnect,
 530         .join_ibss = rndis_join_ibss,
 531         .leave_ibss = rndis_leave_ibss,
 532         .add_key = rndis_add_key,
 533         .del_key = rndis_del_key,
 534         .set_default_key = rndis_set_default_key,
 535         .get_station = rndis_get_station,
 536         .dump_station = rndis_dump_station,
 537         .set_pmksa = rndis_set_pmksa,
 538         .del_pmksa = rndis_del_pmksa,
 539         .flush_pmksa = rndis_flush_pmksa,
 540         .set_power_mgmt = rndis_set_power_mgmt,
 541         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 542 };
 543
 544 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 545
 546
 547 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 548 {
 549         return (struct rndis_wlan_private *)dev->driver_priv;
 550 }
 551
 552 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 553 {
 554         switch (priv->param_power_output) {
 555         default:
 556         case 3:
 557                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 558         case 2:
 559                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 560         case 1:
 561                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 562         case 0:
 563                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 564         }
 565 }
 566
 567 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 568 {
 569         int cipher = priv->encr_keys[idx].cipher;
 570
 571         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 572                 cipher == WLAN_CIPHER_SUITE_TKIP);
 573 }
 574
 575 static int rndis_cipher_to_alg(u32 cipher)
 576 {
 577         switch (cipher) {
 578         default:
 579                 return RNDIS_WLAN_ALG_NONE;
 580         case WLAN_CIPHER_SUITE_WEP40:
 581         case WLAN_CIPHER_SUITE_WEP104:
 582                 return RNDIS_WLAN_ALG_WEP;
 583         case WLAN_CIPHER_SUITE_TKIP:
 584                 return RNDIS_WLAN_ALG_TKIP;
 585         case WLAN_CIPHER_SUITE_CCMP:
 586                 return RNDIS_WLAN_ALG_CCMP;
 587         }
 588 }
 589
 590 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 591 {
 592         switch (akm_suite) {
 593         default:
 594                 return RNDIS_WLAN_KEY_MGMT_NONE;
 595         case WLAN_AKM_SUITE_8021X:
 596                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 597         case WLAN_AKM_SUITE_PSK:
 598                 return RNDIS_WLAN_KEY_MGMT_PSK;
 599         }
 600 }
 601
 602 #ifdef DEBUG
 603 static const char *oid_to_string(u32 oid)
 604 {
 605         switch (oid) {
 606 #define OID_STR(oid) case oid: return(#oid)
 607                 /* from rndis_host.h */
 608                 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 609                 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 610                 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 611                 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 612
 613                 /* from rndis_wlan.c */
 614                 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 615                 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 616
 617                 OID_STR(RNDIS_OID_GEN_XMIT_OK);
 618                 OID_STR(RNDIS_OID_GEN_RCV_OK);
 619                 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 620                 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 621                 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 622
 623                 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
 624                 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
 625                 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
 626
 627                 OID_STR(RNDIS_OID_802_11_BSSID);
 628                 OID_STR(RNDIS_OID_802_11_SSID);
 629                 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
 630                 OID_STR(RNDIS_OID_802_11_ADD_WEP);
 631                 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
 632                 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
 633                 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
 634                 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
 635                 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
 636                 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
 637                 OID_STR(RNDIS_OID_802_11_ADD_KEY);
 638                 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
 639                 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
 640                 OID_STR(RNDIS_OID_802_11_CAPABILITY);
 641                 OID_STR(RNDIS_OID_802_11_PMKID);
 642                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
 643                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
 644                 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
 645                 OID_STR(RNDIS_OID_802_11_RSSI);
 646                 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
 647                 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
 648                 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
 649                 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
 650                 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
 651                 OID_STR(RNDIS_OID_802_11_POWER_MODE);
 652                 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
 653 #undef OID_STR
 654         }
 655
 656         return "?";
 657 }
 658 #else
 659 static const char *oid_to_string(u32 oid)
 660 {
 661         return "?";
 662 }
 663 #endif
 664
 665 /* translate error code */
 666 static int rndis_error_status(__le32 rndis_status)
 667 {
 668         int ret = -EINVAL;
 669         switch (le32_to_cpu(rndis_status)) {
 670         case RNDIS_STATUS_SUCCESS:
 671                 ret = 0;
 672                 break;
 673         case RNDIS_STATUS_FAILURE:
 674         case RNDIS_STATUS_INVALID_DATA:
 675                 ret = -EINVAL;
 676                 break;
 677         case RNDIS_STATUS_NOT_SUPPORTED:
 678                 ret = -EOPNOTSUPP;
 679                 break;
 680         case RNDIS_STATUS_ADAPTER_NOT_READY:
 681         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 682                 ret = -EBUSY;
 683                 break;
 684         }
 685         return ret;
 686 }
 687
 688 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 689 {
 690         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 691         union {
 692                 void                    *buf;
 693                 struct rndis_msg_hdr    *header;
 694                 struct rndis_query      *get;
 695                 struct rndis_query_c    *get_c;
 696         } u;
 697         int ret;
 698         size_t buflen, resplen, respoffs, copylen;
 699
 700         buflen = *len + sizeof(*u.get);
 701         if (buflen < CONTROL_BUFFER_SIZE)
 702                 buflen = CONTROL_BUFFER_SIZE;
 703
 704         if (buflen > COMMAND_BUFFER_SIZE) {
 705                 u.buf = kmalloc(buflen, GFP_KERNEL);
 706                 if (!u.buf)
 707                         return -ENOMEM;
 708         } else {
 709                 u.buf = priv->command_buffer;
 710         }
 711
 712         mutex_lock(&priv->command_lock);
 713
 714         memset(u.get, 0, sizeof *u.get);
 715         u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 716         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 717         u.get->oid = cpu_to_le32(oid);
 718
 719         priv->current_command_oid = oid;
 720         ret = rndis_command(dev, u.header, buflen);
 721         priv->current_command_oid = 0;
 722         if (ret < 0)
 723                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 724                            __func__, oid_to_string(oid), ret,
 725                            le32_to_cpu(u.get_c->status));
 726
 727         if (ret == 0) {
 728                 resplen = le32_to_cpu(u.get_c->len);
 729                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 730
 731                 if (respoffs > buflen) {
 732                         /* Device returned data offset outside buffer, error. */
 733                         netdev_dbg(dev->net,
 734                                    "%s(%s): received invalid data offset: %zu > %zu\n",
 735                                    __func__, oid_to_string(oid), respoffs, buflen);
 736
 737                         ret = -EINVAL;
 738                         goto exit_unlock;
 739                 }
 740
 741                 copylen = min(resplen, buflen - respoffs);
 742
 743                 if (copylen > *len)
 744                         copylen = *len;
 745
 746                 memcpy(data, u.buf + respoffs, copylen);
 747
 748                 *len = resplen;
 749
 750                 ret = rndis_error_status(u.get_c->status);
 751                 if (ret < 0)
 752                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 753                                    __func__, oid_to_string(oid),
 754                                    le32_to_cpu(u.get_c->status), ret);
 755         }
 756
 757 exit_unlock:
 758         mutex_unlock(&priv->command_lock);
 759
 760         if (u.buf != priv->command_buffer)
 761                 kfree(u.buf);
 762         return ret;
 763 }
 764
 765 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 766                          int len)
 767 {
 768         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 769         union {
 770                 void                    *buf;
 771                 struct rndis_msg_hdr    *header;
 772                 struct rndis_set        *set;
 773                 struct rndis_set_c      *set_c;
 774         } u;
 775         int ret, buflen;
 776
 777         buflen = len + sizeof(*u.set);
 778         if (buflen < CONTROL_BUFFER_SIZE)
 779                 buflen = CONTROL_BUFFER_SIZE;
 780
 781         if (buflen > COMMAND_BUFFER_SIZE) {
 782                 u.buf = kmalloc(buflen, GFP_KERNEL);
 783                 if (!u.buf)
 784                         return -ENOMEM;
 785         } else {
 786                 u.buf = priv->command_buffer;
 787         }
 788
 789         mutex_lock(&priv->command_lock);
 790
 791         memset(u.set, 0, sizeof *u.set);
 792         u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 793         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 794         u.set->oid = cpu_to_le32(oid);
 795         u.set->len = cpu_to_le32(len);
 796         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 797         u.set->handle = cpu_to_le32(0);
 798         memcpy(u.buf + sizeof(*u.set), data, len);
 799
 800         priv->current_command_oid = oid;
 801         ret = rndis_command(dev, u.header, buflen);
 802         priv->current_command_oid = 0;
 803         if (ret < 0)
 804                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 805                            __func__, oid_to_string(oid), ret,
 806                            le32_to_cpu(u.set_c->status));
 807
 808         if (ret == 0) {
 809                 ret = rndis_error_status(u.set_c->status);
 810
 811                 if (ret < 0)
 812                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 813                                    __func__, oid_to_string(oid),
 814                                    le32_to_cpu(u.set_c->status), ret);
 815         }
 816
 817         mutex_unlock(&priv->command_lock);
 818
 819         if (u.buf != priv->command_buffer)
 820                 kfree(u.buf);
 821         return ret;
 822 }
 823
 824 static int rndis_reset(struct usbnet *usbdev)
 825 {
 826         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 827         struct rndis_reset *reset;
 828         int ret;
 829
 830         mutex_lock(&priv->command_lock);
 831
 832         reset = (void *)priv->command_buffer;
 833         memset(reset, 0, sizeof(*reset));
 834         reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 835         reset->msg_len = cpu_to_le32(sizeof(*reset));
 836         priv->current_command_oid = 0;
 837         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 838
 839         mutex_unlock(&priv->command_lock);
 840
 841         if (ret < 0)
 842                 return ret;
 843         return 0;
 844 }
 845
 846 /*
 847  * Specs say that we can only set config parameters only soon after device
 848  * initialization.
 849  *   value_type: 0 = u32, 2 = unicode string
 850  */
 851 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 852                                                 int value_type, void *value)
 853 {
 854         struct ndis_config_param *infobuf;
 855         int value_len, info_len, param_len, ret, i;
 856         __le16 *unibuf;
 857         __le32 *dst_value;
 858
 859         if (value_type == 0)
 860                 value_len = sizeof(__le32);
 861         else if (value_type == 2)
 862                 value_len = strlen(value) * sizeof(__le16);
 863         else
 864                 return -EINVAL;
 865
 866         param_len = strlen(param) * sizeof(__le16);
 867         info_len = sizeof(*infobuf) + param_len + value_len;
 868
 869 #ifdef DEBUG
 870         info_len += 12;
 871 #endif
 872         infobuf = kmalloc(info_len, GFP_KERNEL);
 873         if (!infobuf)
 874                 return -ENOMEM;
 875
 876 #ifdef DEBUG
 877         info_len -= 12;
 878         /* extra 12 bytes are for padding (debug output) */
 879         memset(infobuf, 0xCC, info_len + 12);
 880 #endif
 881
 882         if (value_type == 2)
 883                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 884                            param, (u8 *)value);
 885         else
 886                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 887                            param, *(u32 *)value);
 888
 889         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 890         infobuf->name_length = cpu_to_le32(param_len);
 891         infobuf->type = cpu_to_le32(value_type);
 892         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 893         infobuf->value_length = cpu_to_le32(value_len);
 894
 895         /* simple string to unicode string conversion */
 896         unibuf = (void *)infobuf + sizeof(*infobuf);
 897         for (i = 0; i < param_len / sizeof(__le16); i++)
 898                 unibuf[i] = cpu_to_le16(param[i]);
 899
 900         if (value_type == 2) {
 901                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 902                 for (i = 0; i < value_len / sizeof(__le16); i++)
 903                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 904         } else {
 905                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 906                 *dst_value = cpu_to_le32(*(u32 *)value);
 907         }
 908
 909 #ifdef DEBUG
 910         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 911         for (i = 0; i < info_len; i += 12) {
 912                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 913                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 914                            cpu_to_be32(tmp[0]),
 915                            cpu_to_be32(tmp[1]),
 916                            cpu_to_be32(tmp[2]));
 917         }
 918 #endif
 919
 920         ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 921                                                         infobuf, info_len);
 922         if (ret != 0)
 923                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 924                            ret);
 925
 926         kfree(infobuf);
 927         return ret;
 928 }
 929
 930 static int rndis_set_config_parameter_str(struct usbnet *dev,
 931                                                 char *param, char *value)
 932 {
 933         return rndis_set_config_parameter(dev, param, 2, value);
 934 }
 935
 936 /*
 937  * data conversion functions
 938  */
 939 static int level_to_qual(int level)
 940 {
 941         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 942         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 943 }
 944
 945 /*
 946  * common functions
 947  */
 948 static int set_infra_mode(struct usbnet *usbdev, int mode);
 949 static void restore_keys(struct usbnet *usbdev);
 950 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 951                                         bool *matched);
 952
 953 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 954 {
 955         __le32 tmp;
 956
 957         /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 958         tmp = cpu_to_le32(1);
 959         return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 960                                                         sizeof(tmp));
 961 }
 962
 963 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 964 {
 965         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 966         int ret;
 967
 968         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 969                             ssid, sizeof(*ssid));
 970         if (ret < 0) {
 971                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 972                 return ret;
 973         }
 974         if (ret == 0) {
 975                 priv->radio_on = true;
 976                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
 977         }
 978
 979         return ret;
 980 }
 981
 982 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
 983 {
 984         int ret;
 985
 986         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
 987                             bssid, ETH_ALEN);
 988         if (ret < 0) {
 989                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
 990                             bssid, ret);
 991                 return ret;
 992         }
 993
 994         return ret;
 995 }
 996
 997 static int clear_bssid(struct usbnet *usbdev)
 998 {
 999         static const u8 broadcast_mac[ETH_ALEN] = {
1000                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1001         };
1002
1003         return set_bssid(usbdev, broadcast_mac);
1004 }
1005
1006 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1007 {
1008         int ret, len;
1009
1010         len = ETH_ALEN;
1011         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1012                               bssid, &len);
1013
1014         if (ret != 0)
1015                 eth_zero_addr(bssid);
1016
1017         return ret;
1018 }
1019
1020 static int get_association_info(struct usbnet *usbdev,
1021                         struct ndis_80211_assoc_info *info, int len)
1022 {
1023         return rndis_query_oid(usbdev,
1024                         RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1025                         info, &len);
1026 }
1027
1028 static bool is_associated(struct usbnet *usbdev)
1029 {
1030         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1031         u8 bssid[ETH_ALEN];
1032         int ret;
1033
1034         if (!priv->radio_on)
1035                 return false;
1036
1037         ret = get_bssid(usbdev, bssid);
1038
1039         return (ret == 0 && !is_zero_ether_addr(bssid));
1040 }
1041
1042 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1043 {
1044         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1045         struct ndis_80211_ssid ssid;
1046         int i, ret = 0;
1047
1048         if (priv->radio_on) {
1049                 ret = rndis_set_oid(usbdev,
1050                                 RNDIS_OID_802_11_DISASSOCIATE,
1051                                 NULL, 0);
1052                 if (ret == 0) {
1053                         priv->radio_on = false;
1054                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1055                                    __func__);
1056
1057                         if (reset_ssid)
1058                                 msleep(100);
1059                 }
1060         }
1061
1062         /* disassociate causes radio to be turned off; if reset_ssid
1063          * is given, set random ssid to enable radio */
1064         if (reset_ssid) {
1065                 /* Set device to infrastructure mode so we don't get ad-hoc
1066                  * 'media connect' indications with the random ssid.
1067                  */
1068                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1069
1070                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1071                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1072                 ssid.essid[0] = 0x1;
1073                 ssid.essid[1] = 0xff;
1074                 for (i = 2; i < sizeof(ssid.essid); i++)
1075                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1076                 ret = set_essid(usbdev, &ssid);
1077         }
1078         return ret;
1079 }
1080
1081 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1082                                 enum nl80211_auth_type auth_type, int keymgmt)
1083 {
1084         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1085         __le32 tmp;
1086         int auth_mode, ret;
1087
1088         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1089                    __func__, wpa_version, auth_type, keymgmt);
1090
1091         if (wpa_version & NL80211_WPA_VERSION_2) {
1092                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1093                         auth_mode = NDIS_80211_AUTH_WPA2;
1094                 else
1095                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1096         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1097                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1098                         auth_mode = NDIS_80211_AUTH_WPA;
1099                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1100                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1101                 else
1102                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1103         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1104                 auth_mode = NDIS_80211_AUTH_SHARED;
1105         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1106                 auth_mode = NDIS_80211_AUTH_OPEN;
1107         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1108                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1109         else
1110                 return -ENOTSUPP;
1111
1112         tmp = cpu_to_le32(auth_mode);
1113         ret = rndis_set_oid(usbdev,
1114                             RNDIS_OID_802_11_AUTHENTICATION_MODE,
1115                             &tmp, sizeof(tmp));
1116         if (ret != 0) {
1117                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1118                             ret);
1119                 return ret;
1120         }
1121
1122         priv->wpa_version = wpa_version;
1123
1124         return 0;
1125 }
1126
1127 static int set_priv_filter(struct usbnet *usbdev)
1128 {
1129         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1130         __le32 tmp;
1131
1132         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1133                    __func__, priv->wpa_version);
1134
1135         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1136             priv->wpa_version & NL80211_WPA_VERSION_1)
1137                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1138         else
1139                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1140
1141         return rndis_set_oid(usbdev,
1142                              RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1143                              sizeof(tmp));
1144 }
1145
1146 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1147 {
1148         __le32 tmp;
1149         int encr_mode, ret;
1150
1151         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1152                    __func__, pairwise, groupwise);
1153
1154         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1155                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1156         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1157                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1158         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1159                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1160         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1161                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1162         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1163                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1164         else
1165                 encr_mode = NDIS_80211_ENCR_DISABLED;
1166
1167         tmp = cpu_to_le32(encr_mode);
1168         ret = rndis_set_oid(usbdev,
1169                         RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1170                         sizeof(tmp));
1171         if (ret != 0) {
1172                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1173                             ret);
1174                 return ret;
1175         }
1176
1177         return 0;
1178 }
1179
1180 static int set_infra_mode(struct usbnet *usbdev, int mode)
1181 {
1182         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1183         __le32 tmp;
1184         int ret;
1185
1186         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1187                    __func__, priv->infra_mode);
1188
1189         tmp = cpu_to_le32(mode);
1190         ret = rndis_set_oid(usbdev,
1191                             RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1192                             &tmp, sizeof(tmp));
1193         if (ret != 0) {
1194                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1195                             ret);
1196                 return ret;
1197         }
1198
1199         /* NDIS drivers clear keys when infrastructure mode is
1200          * changed. But Linux tools assume otherwise. So set the
1201          * keys */
1202         restore_keys(usbdev);
1203
1204         priv->infra_mode = mode;
1205         return 0;
1206 }
1207
1208 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1209 {
1210         __le32 tmp;
1211
1212         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1213
1214         if (rts_threshold == -1 || rts_threshold > 2347)
1215                 rts_threshold = 2347;
1216
1217         tmp = cpu_to_le32(rts_threshold);
1218         return rndis_set_oid(usbdev,
1219                              RNDIS_OID_802_11_RTS_THRESHOLD,
1220                              &tmp, sizeof(tmp));
1221 }
1222
1223 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1224 {
1225         __le32 tmp;
1226
1227         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1228
1229         if (frag_threshold < 256 || frag_threshold > 2346)
1230                 frag_threshold = 2346;
1231
1232         tmp = cpu_to_le32(frag_threshold);
1233         return rndis_set_oid(usbdev,
1234                         RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1235                         &tmp, sizeof(tmp));
1236 }
1237
1238 static void set_default_iw_params(struct usbnet *usbdev)
1239 {
1240         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1241         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1242                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1243         set_priv_filter(usbdev);
1244         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1245 }
1246
1247 static int deauthenticate(struct usbnet *usbdev)
1248 {
1249         int ret;
1250
1251         ret = disassociate(usbdev, true);
1252         set_default_iw_params(usbdev);
1253         return ret;
1254 }
1255
1256 static int set_channel(struct usbnet *usbdev, int channel)
1257 {
1258         struct ndis_80211_conf config;
1259         unsigned int dsconfig;
1260         int len, ret;
1261
1262         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1263
1264         /* this OID is valid only when not associated */
1265         if (is_associated(usbdev))
1266                 return 0;
1267
1268         dsconfig = 1000 *
1269                 ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1270
1271         len = sizeof(config);
1272         ret = rndis_query_oid(usbdev,
1273                         RNDIS_OID_802_11_CONFIGURATION,
1274                         &config, &len);
1275         if (ret < 0) {
1276                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1277                            __func__);
1278                 return ret;
1279         }
1280
1281         config.ds_config = cpu_to_le32(dsconfig);
1282         ret = rndis_set_oid(usbdev,
1283                         RNDIS_OID_802_11_CONFIGURATION,
1284                         &config, sizeof(config));
1285
1286         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1287
1288         return ret;
1289 }
1290
1291 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1292                                                      u32 *beacon_period)
1293 {
1294         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1295         struct ieee80211_channel *channel;
1296         struct ndis_80211_conf config;
1297         int len, ret;
1298
1299         /* Get channel and beacon interval */
1300         len = sizeof(config);
1301         ret = rndis_query_oid(usbdev,
1302                         RNDIS_OID_802_11_CONFIGURATION,
1303                         &config, &len);
1304         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1305                                 __func__, ret);
1306         if (ret < 0)
1307                 return NULL;
1308
1309         channel = ieee80211_get_channel(priv->wdev.wiphy,
1310                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1311         if (!channel)
1312                 return NULL;
1313
1314         if (beacon_period)
1315                 *beacon_period = le32_to_cpu(config.beacon_period);
1316         return channel;
1317 }
1318
1319 /* index must be 0 - N, as per NDIS  */
1320 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1321                                                                 u8 index)
1322 {
1323         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1324         struct ndis_80211_wep_key ndis_key;
1325         u32 cipher;
1326         int ret;
1327
1328         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1329                    __func__, index, key_len);
1330
1331         if (index >= RNDIS_WLAN_NUM_KEYS)
1332                 return -EINVAL;
1333
1334         if (key_len == 5)
1335                 cipher = WLAN_CIPHER_SUITE_WEP40;
1336         else if (key_len == 13)
1337                 cipher = WLAN_CIPHER_SUITE_WEP104;
1338         else
1339                 return -EINVAL;
1340
1341         memset(&ndis_key, 0, sizeof(ndis_key));
1342
1343         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1344         ndis_key.length = cpu_to_le32(key_len);
1345         ndis_key.index = cpu_to_le32(index);
1346         memcpy(&ndis_key.material, key, key_len);
1347
1348         if (index == priv->encr_tx_key_index) {
1349                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1350                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1351                                                         RNDIS_WLAN_ALG_NONE);
1352                 if (ret)
1353                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1354                                     ret);
1355         }
1356
1357         ret = rndis_set_oid(usbdev,
1358                         RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1359                         sizeof(ndis_key));
1360         if (ret != 0) {
1361                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1362                             index + 1, ret);
1363                 return ret;
1364         }
1365
1366         priv->encr_keys[index].len = key_len;
1367         priv->encr_keys[index].cipher = cipher;
1368         memcpy(&priv->encr_keys[index].material, key, key_len);
1369         eth_broadcast_addr(priv->encr_keys[index].bssid);
1370
1371         return 0;
1372 }
1373
1374 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1375                         u8 index, const u8 *addr, const u8 *rx_seq,
1376                         int seq_len, u32 cipher, __le32 flags)
1377 {
1378         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1379         struct ndis_80211_key ndis_key;
1380         bool is_addr_ok;
1381         int ret;
1382
1383         if (index >= RNDIS_WLAN_NUM_KEYS) {
1384                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1385                            __func__, index);
1386                 return -EINVAL;
1387         }
1388         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1389                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1390                            __func__, key_len);
1391                 return -EINVAL;
1392         }
1393         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1394                 if (!rx_seq || seq_len <= 0) {
1395                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1396                                    __func__);
1397                         return -EINVAL;
1398                 }
1399                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1400                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1401                         return -EINVAL;
1402                 }
1403         }
1404
1405         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1406                                         !is_broadcast_ether_addr(addr);
1407         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1408                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1409                            __func__, addr);
1410                 return -EINVAL;
1411         }
1412
1413         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1414                    __func__, index,
1415                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1416                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1417                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1418
1419         memset(&ndis_key, 0, sizeof(ndis_key));
1420
1421         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1422                                 sizeof(ndis_key.material) + key_len);
1423         ndis_key.length = cpu_to_le32(key_len);
1424         ndis_key.index = cpu_to_le32(index) | flags;
1425
1426         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1427                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1428                  * different order than NDIS spec, so swap the order here. */
1429                 memcpy(ndis_key.material, key, 16);
1430                 memcpy(ndis_key.material + 16, key + 24, 8);
1431                 memcpy(ndis_key.material + 24, key + 16, 8);
1432         } else
1433                 memcpy(ndis_key.material, key, key_len);
1434
1435         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1436                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1437
1438         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1439                 /* pairwise key */
1440                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1441         } else {
1442                 /* group key */
1443                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1444                         eth_broadcast_addr(ndis_key.bssid);
1445                 else
1446                         get_bssid(usbdev, ndis_key.bssid);
1447         }
1448
1449         ret = rndis_set_oid(usbdev,
1450                         RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1451                         le32_to_cpu(ndis_key.size));
1452         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1453                    __func__, ret);
1454         if (ret != 0)
1455                 return ret;
1456
1457         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1458         priv->encr_keys[index].len = key_len;
1459         priv->encr_keys[index].cipher = cipher;
1460         memcpy(&priv->encr_keys[index].material, key, key_len);
1461         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1462                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1463         else
1464                 eth_broadcast_addr(priv->encr_keys[index].bssid);
1465
1466         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1467                 priv->encr_tx_key_index = index;
1468
1469         return 0;
1470 }
1471
1472 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1473 {
1474         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1475         struct rndis_wlan_encr_key key;
1476
1477         if (is_wpa_key(priv, key_idx))
1478                 return 0;
1479
1480         key = priv->encr_keys[key_idx];
1481
1482         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1483
1484         if (key.len == 0)
1485                 return 0;
1486
1487         return add_wep_key(usbdev, key.material, key.len, key_idx);
1488 }
1489
1490 static void restore_keys(struct usbnet *usbdev)
1491 {
1492         int i;
1493
1494         for (i = 0; i < 4; i++)
1495                 restore_key(usbdev, i);
1496 }
1497
1498 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1499 {
1500         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1501 }
1502
1503 /* remove_key is for both wep and wpa */
1504 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1505 {
1506         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1507         struct ndis_80211_remove_key remove_key;
1508         __le32 keyindex;
1509         bool is_wpa;
1510         int ret;
1511
1512         if (index >= RNDIS_WLAN_NUM_KEYS)
1513                 return -ENOENT;
1514
1515         if (priv->encr_keys[index].len == 0)
1516                 return 0;
1517
1518         is_wpa = is_wpa_key(priv, index);
1519
1520         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1521                    __func__, index, is_wpa ? "wpa" : "wep",
1522                    priv->encr_keys[index].len);
1523
1524         clear_key(priv, index);
1525
1526         if (is_wpa) {
1527                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1528                 remove_key.index = cpu_to_le32(index);
1529                 if (bssid) {
1530                         /* pairwise key */
1531                         if (!is_broadcast_ether_addr(bssid))
1532                                 remove_key.index |=
1533                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1534                         memcpy(remove_key.bssid, bssid,
1535                                         sizeof(remove_key.bssid));
1536                 } else
1537                         memset(remove_key.bssid, 0xff,
1538                                                 sizeof(remove_key.bssid));
1539
1540                 ret = rndis_set_oid(usbdev,
1541                                 RNDIS_OID_802_11_REMOVE_KEY,
1542                                 &remove_key, sizeof(remove_key));
1543                 if (ret != 0)
1544                         return ret;
1545         } else {
1546                 keyindex = cpu_to_le32(index);
1547                 ret = rndis_set_oid(usbdev,
1548                                 RNDIS_OID_802_11_REMOVE_WEP,
1549                                 &keyindex, sizeof(keyindex));
1550                 if (ret != 0) {
1551                         netdev_warn(usbdev->net,
1552                                     "removing encryption key %d failed (%08X)\n",
1553                                     index, ret);
1554                         return ret;
1555                 }
1556         }
1557
1558         /* if it is transmit key, disable encryption */
1559         if (index == priv->encr_tx_key_index)
1560                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1561
1562         return 0;
1563 }
1564
1565 static void set_multicast_list(struct usbnet *usbdev)
1566 {
1567         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1568         struct netdev_hw_addr *ha;
1569         __le32 filter, basefilter;
1570         int ret;
1571         char *mc_addrs = NULL;
1572         int mc_count;
1573
1574         basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1575                                           RNDIS_PACKET_TYPE_BROADCAST);
1576
1577         if (usbdev->net->flags & IFF_PROMISC) {
1578                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1579                                       RNDIS_PACKET_TYPE_ALL_LOCAL);
1580         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1581                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1582         }
1583
1584         if (filter != basefilter)
1585                 goto set_filter;
1586
1587         /*
1588          * mc_list should be accessed holding the lock, so copy addresses to
1589          * local buffer first.
1590          */
1591         netif_addr_lock_bh(usbdev->net);
1592         mc_count = netdev_mc_count(usbdev->net);
1593         if (mc_count > priv->multicast_size) {
1594                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1595         } else if (mc_count) {
1596                 int i = 0;
1597
1598                 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1599                 if (!mc_addrs) {
1600                         netif_addr_unlock_bh(usbdev->net);
1601                         return;
1602                 }
1603
1604                 netdev_for_each_mc_addr(ha, usbdev->net)
1605                         memcpy(mc_addrs + i++ * ETH_ALEN,
1606                                ha->addr, ETH_ALEN);
1607         }
1608         netif_addr_unlock_bh(usbdev->net);
1609
1610         if (filter != basefilter)
1611                 goto set_filter;
1612
1613         if (mc_count) {
1614                 ret = rndis_set_oid(usbdev,
1615                                 RNDIS_OID_802_3_MULTICAST_LIST,
1616                                 mc_addrs, mc_count * ETH_ALEN);
1617                 kfree(mc_addrs);
1618                 if (ret == 0)
1619                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1620                 else
1621                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1622
1623                 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1624                            mc_count, priv->multicast_size, ret);
1625         }
1626
1627 set_filter:
1628         ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1629                                                         sizeof(filter));
1630         if (ret < 0) {
1631                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1632                             le32_to_cpu(filter));
1633         }
1634
1635         netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1636                    le32_to_cpu(filter), ret);
1637 }
1638
1639 #ifdef DEBUG
1640 static void debug_print_pmkids(struct usbnet *usbdev,
1641                                 struct ndis_80211_pmkid *pmkids,
1642                                 const char *func_str)
1643 {
1644         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1645         int i, len, count, max_pmkids, entry_len;
1646
1647         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1648         len = le32_to_cpu(pmkids->length);
1649         count = le32_to_cpu(pmkids->bssid_info_count);
1650
1651         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1652
1653         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1654                                 "%d)\n", func_str, count, len, entry_len);
1655
1656         if (count > max_pmkids)
1657                 count = max_pmkids;
1658
1659         for (i = 0; i < count; i++) {
1660                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1661
1662                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1663                                 "pmkid: %08X:%08X:%08X:%08X\n",
1664                                 func_str, pmkids->bssid_info[i].bssid,
1665                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1666                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1667         }
1668 }
1669 #else
1670 static void debug_print_pmkids(struct usbnet *usbdev,
1671                                 struct ndis_80211_pmkid *pmkids,
1672                                 const char *func_str)
1673 {
1674         return;
1675 }
1676 #endif
1677
1678 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1679 {
1680         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1681         struct ndis_80211_pmkid *pmkids;
1682         int len, ret, max_pmkids;
1683
1684         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1685         len = struct_size(pmkids, bssid_info, max_pmkids);
1686
1687         pmkids = kzalloc(len, GFP_KERNEL);
1688         if (!pmkids)
1689                 return ERR_PTR(-ENOMEM);
1690
1691         pmkids->length = cpu_to_le32(len);
1692         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1693
1694         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1695                         pmkids, &len);
1696         if (ret < 0) {
1697                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1698                                 " -> %d\n", __func__, len, max_pmkids, ret);
1699
1700                 kfree(pmkids);
1701                 return ERR_PTR(ret);
1702         }
1703
1704         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1705                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1706
1707         debug_print_pmkids(usbdev, pmkids, __func__);
1708
1709         return pmkids;
1710 }
1711
1712 static int set_device_pmkids(struct usbnet *usbdev,
1713                                 struct ndis_80211_pmkid *pmkids)
1714 {
1715         int ret, len, num_pmkids;
1716
1717         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1718         len = struct_size(pmkids, bssid_info, num_pmkids);
1719         pmkids->length = cpu_to_le32(len);
1720
1721         debug_print_pmkids(usbdev, pmkids, __func__);
1722
1723         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1724                             le32_to_cpu(pmkids->length));
1725         if (ret < 0) {
1726                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1727                                 "\n", __func__, len, num_pmkids, ret);
1728         }
1729
1730         kfree(pmkids);
1731         return ret;
1732 }
1733
1734 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1735                                                 struct ndis_80211_pmkid *pmkids,
1736                                                 struct cfg80211_pmksa *pmksa,
1737                                                 int max_pmkids)
1738 {
1739         int i, err;
1740         unsigned int count;
1741
1742         count = le32_to_cpu(pmkids->bssid_info_count);
1743
1744         if (count > max_pmkids)
1745                 count = max_pmkids;
1746
1747         for (i = 0; i < count; i++)
1748                 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1749                                      pmksa->bssid))
1750                         break;
1751
1752         /* pmkid not found */
1753         if (i == count) {
1754                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1755                                         __func__, pmksa->bssid);
1756                 err = -ENOENT;
1757                 goto error;
1758         }
1759
1760         for (; i + 1 < count; i++)
1761                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1762
1763         count--;
1764         pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1765         pmkids->bssid_info_count = cpu_to_le32(count);
1766
1767         return pmkids;
1768 error:
1769         kfree(pmkids);
1770         return ERR_PTR(err);
1771 }
1772
1773 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1774                                                 struct ndis_80211_pmkid *pmkids,
1775                                                 struct cfg80211_pmksa *pmksa,
1776                                                 int max_pmkids)
1777 {
1778         struct ndis_80211_pmkid *new_pmkids;
1779         int i, err, newlen;
1780         unsigned int count;
1781
1782         count = le32_to_cpu(pmkids->bssid_info_count);
1783
1784         if (count > max_pmkids)
1785                 count = max_pmkids;
1786
1787         /* update with new pmkid */
1788         for (i = 0; i < count; i++) {
1789                 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1790                                       pmksa->bssid))
1791                         continue;
1792
1793                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1794                                                                 WLAN_PMKID_LEN);
1795
1796                 return pmkids;
1797         }
1798
1799         /* out of space, return error */
1800         if (i == max_pmkids) {
1801                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1802                 err = -ENOSPC;
1803                 goto error;
1804         }
1805
1806         /* add new pmkid */
1807         newlen = struct_size(pmkids, bssid_info, count + 1);
1808
1809         new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1810         if (!new_pmkids) {
1811                 err = -ENOMEM;
1812                 goto error;
1813         }
1814         pmkids = new_pmkids;
1815
1816         pmkids->length = cpu_to_le32(newlen);
1817         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1818
1819         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1820         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1821
1822         return pmkids;
1823 error:
1824         kfree(pmkids);
1825         return ERR_PTR(err);
1826 }
1827
1828 /*
1829  * cfg80211 ops
1830  */
1831 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1832                                         struct net_device *dev,
1833                                         enum nl80211_iftype type,
1834                                         struct vif_params *params)
1835 {
1836         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1837         struct usbnet *usbdev = priv->usbdev;
1838         int mode;
1839
1840         switch (type) {
1841         case NL80211_IFTYPE_ADHOC:
1842                 mode = NDIS_80211_INFRA_ADHOC;
1843                 break;
1844         case NL80211_IFTYPE_STATION:
1845                 mode = NDIS_80211_INFRA_INFRA;
1846                 break;
1847         default:
1848                 return -EINVAL;
1849         }
1850
1851         priv->wdev.iftype = type;
1852
1853         return set_infra_mode(usbdev, mode);
1854 }
1855
1856 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1857 {
1858         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1859         struct usbnet *usbdev = priv->usbdev;
1860         int err;
1861
1862         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1863                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1864                 if (err < 0)
1865                         return err;
1866         }
1867
1868         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1869                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1870                 if (err < 0)
1871                         return err;
1872         }
1873
1874         return 0;
1875 }
1876
1877 static int rndis_set_tx_power(struct wiphy *wiphy,
1878                               struct wireless_dev *wdev,
1879                               enum nl80211_tx_power_setting type,
1880                               int mbm)
1881 {
1882         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1883         struct usbnet *usbdev = priv->usbdev;
1884
1885         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1886                    __func__, type, mbm);
1887
1888         if (mbm < 0 || (mbm % 100))
1889                 return -ENOTSUPP;
1890
1891         /* Device doesn't support changing txpower after initialization, only
1892          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1893          * currently used.
1894          */
1895         if (type == NL80211_TX_POWER_AUTOMATIC ||
1896             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1897                 if (!priv->radio_on)
1898                         disassociate(usbdev, true); /* turn on radio */
1899
1900                 return 0;
1901         }
1902
1903         return -ENOTSUPP;
1904 }
1905
1906 static int rndis_get_tx_power(struct wiphy *wiphy,
1907                               struct wireless_dev *wdev,
1908                               int *dbm)
1909 {
1910         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1911         struct usbnet *usbdev = priv->usbdev;
1912
1913         *dbm = get_bcm4320_power_dbm(priv);
1914
1915         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1916
1917         return 0;
1918 }
1919
1920 #define SCAN_DELAY_JIFFIES (6 * HZ)
1921 static int rndis_scan(struct wiphy *wiphy,
1922                         struct cfg80211_scan_request *request)
1923 {
1924         struct net_device *dev = request->wdev->netdev;
1925         struct usbnet *usbdev = netdev_priv(dev);
1926         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1927         int ret;
1928         int delay = SCAN_DELAY_JIFFIES;
1929
1930         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1931
1932         /* Get current bssid list from device before new scan, as new scan
1933          * clears internal bssid list.
1934          */
1935         rndis_check_bssid_list(usbdev, NULL, NULL);
1936
1937         if (priv->scan_request && priv->scan_request != request)
1938                 return -EBUSY;
1939
1940         priv->scan_request = request;
1941
1942         ret = rndis_start_bssid_list_scan(usbdev);
1943         if (ret == 0) {
1944                 if (priv->device_type == RNDIS_BCM4320A)
1945                         delay = HZ;
1946
1947                 /* Wait before retrieving scan results from device */
1948                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1949         }
1950
1951         return ret;
1952 }
1953
1954 static bool rndis_bss_info_update(struct usbnet *usbdev,
1955                                   struct ndis_80211_bssid_ex *bssid)
1956 {
1957         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1958         struct ieee80211_channel *channel;
1959         struct cfg80211_bss *bss;
1960         s32 signal;
1961         u64 timestamp;
1962         u16 capability;
1963         u16 beacon_interval;
1964         struct ndis_80211_fixed_ies *fixed;
1965         int ie_len, bssid_len;
1966         u8 *ie;
1967
1968         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1969                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1970
1971         /* parse bssid structure */
1972         bssid_len = le32_to_cpu(bssid->length);
1973
1974         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1975                         sizeof(struct ndis_80211_fixed_ies))
1976                 return NULL;
1977
1978         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1979
1980         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1981         ie_len = min(bssid_len - (int)sizeof(*bssid),
1982                                         (int)le32_to_cpu(bssid->ie_length));
1983         ie_len -= sizeof(struct ndis_80211_fixed_ies);
1984         if (ie_len < 0)
1985                 return NULL;
1986
1987         /* extract data for cfg80211_inform_bss */
1988         channel = ieee80211_get_channel(priv->wdev.wiphy,
1989                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1990         if (!channel)
1991                 return NULL;
1992
1993         signal = level_to_qual(le32_to_cpu(bssid->rssi));
1994         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1995         capability = le16_to_cpu(fixed->capabilities);
1996         beacon_interval = le16_to_cpu(fixed->beacon_interval);
1997
1998         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
1999                                   CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2000                                   timestamp, capability, beacon_interval,
2001                                   ie, ie_len, signal, GFP_KERNEL);
2002         cfg80211_put_bss(priv->wdev.wiphy, bss);
2003
2004         return (bss != NULL);
2005 }
2006
2007 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2008                                         struct ndis_80211_bssid_ex *bssid,
2009                                         int *bssid_len, void *buf, int len)
2010 {
2011         void *buf_end, *bssid_end;
2012
2013         buf_end = (char *)buf + len;
2014         bssid_end = (char *)bssid + *bssid_len;
2015
2016         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2017                 *bssid_len = 0;
2018                 return NULL;
2019         } else {
2020                 bssid = (void *)((char *)bssid + *bssid_len);
2021                 *bssid_len = le32_to_cpu(bssid->length);
2022                 return bssid;
2023         }
2024 }
2025
2026 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2027                                   int bssid_len, void *buf, int len)
2028 {
2029         void *buf_end, *bssid_end;
2030
2031         if (!bssid || bssid_len <= 0 || bssid_len > len)
2032                 return false;
2033
2034         buf_end = (char *)buf + len;
2035         bssid_end = (char *)bssid + bssid_len;
2036
2037         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2038 }
2039
2040 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2041                                         bool *matched)
2042 {
2043         void *buf = NULL;
2044         struct ndis_80211_bssid_list_ex *bssid_list;
2045         struct ndis_80211_bssid_ex *bssid;
2046         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2047
2048         netdev_dbg(usbdev->net, "%s()\n", __func__);
2049
2050         len = CONTROL_BUFFER_SIZE;
2051 resize_buf:
2052         buf = kzalloc(len, GFP_KERNEL);
2053         if (!buf) {
2054                 ret = -ENOMEM;
2055                 goto out;
2056         }
2057
2058         /* BSSID-list might have got bigger last time we checked, keep
2059          * resizing until it won't get any bigger.
2060          */
2061         new_len = len;
2062         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2063                               buf, &new_len);
2064         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2065                 goto out;
2066
2067         if (new_len > len) {
2068                 len = new_len;
2069                 kfree(buf);
2070                 goto resize_buf;
2071         }
2072
2073         len = new_len;
2074
2075         bssid_list = buf;
2076         count = le32_to_cpu(bssid_list->num_items);
2077         real_count = 0;
2078         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2079
2080         bssid_len = 0;
2081         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2082
2083         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2084          * received 'num_items' and walking through full bssid buffer instead.
2085          */
2086         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2087                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2088                     matched) {
2089                         if (ether_addr_equal(bssid->mac, match_bssid))
2090                                 *matched = true;
2091                 }
2092
2093                 real_count++;
2094                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2095         }
2096
2097         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2098                                 " %d\n", __func__, count, real_count);
2099
2100 out:
2101         kfree(buf);
2102         return ret;
2103 }
2104
2105 static void rndis_get_scan_results(struct work_struct *work)
2106 {
2107         struct rndis_wlan_private *priv =
2108                 container_of(work, struct rndis_wlan_private, scan_work.work);
2109         struct usbnet *usbdev = priv->usbdev;
2110         struct cfg80211_scan_info info = {};
2111         int ret;
2112
2113         netdev_dbg(usbdev->net, "get_scan_results\n");
2114
2115         if (!priv->scan_request)
2116                 return;
2117
2118         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2119
2120         info.aborted = ret < 0;
2121         cfg80211_scan_done(priv->scan_request, &info);
2122
2123         priv->scan_request = NULL;
2124 }
2125
2126 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2127                                         struct cfg80211_connect_params *sme)
2128 {
2129         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2130         struct usbnet *usbdev = priv->usbdev;
2131         struct ieee80211_channel *channel = sme->channel;
2132         struct ndis_80211_ssid ssid;
2133         int pairwise = RNDIS_WLAN_ALG_NONE;
2134         int groupwise = RNDIS_WLAN_ALG_NONE;
2135         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2136         int length, i, ret, chan = -1;
2137
2138         if (channel)
2139                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2140
2141         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2142         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2143                 pairwise |=
2144                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2145
2146         if (sme->crypto.n_ciphers_pairwise > 0 &&
2147                         pairwise == RNDIS_WLAN_ALG_NONE) {
2148                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2149                 return -ENOTSUPP;
2150         }
2151
2152         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2153                 keymgmt |=
2154                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2155
2156         if (sme->crypto.n_akm_suites > 0 &&
2157                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2158                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2159                 return -ENOTSUPP;
2160         }
2161
2162         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2163                    sme->ssid, sme->bssid, chan,
2164                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2165                    groupwise, pairwise, keymgmt);
2166
2167         if (is_associated(usbdev))
2168                 disassociate(usbdev, false);
2169
2170         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2171         if (ret < 0) {
2172                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2173                            ret);
2174                 goto err_turn_radio_on;
2175         }
2176
2177         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2178                                                                 keymgmt);
2179         if (ret < 0) {
2180                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2181                            ret);
2182                 goto err_turn_radio_on;
2183         }
2184
2185         set_priv_filter(usbdev);
2186
2187         ret = set_encr_mode(usbdev, pairwise, groupwise);
2188         if (ret < 0) {
2189                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2190                            ret);
2191                 goto err_turn_radio_on;
2192         }
2193
2194         if (channel) {
2195                 ret = set_channel(usbdev, chan);
2196                 if (ret < 0) {
2197                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2198                                    ret);
2199                         goto err_turn_radio_on;
2200                 }
2201         }
2202
2203         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2204                 priv->encr_tx_key_index = sme->key_idx;
2205                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2206                 if (ret < 0) {
2207                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2208                                    ret, sme->key_len, sme->key_idx);
2209                         goto err_turn_radio_on;
2210                 }
2211         }
2212
2213         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2214                                 !is_broadcast_ether_addr(sme->bssid)) {
2215                 ret = set_bssid(usbdev, sme->bssid);
2216                 if (ret < 0) {
2217                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2218                                    ret);
2219                         goto err_turn_radio_on;
2220                 }
2221         } else
2222                 clear_bssid(usbdev);
2223
2224         length = sme->ssid_len;
2225         if (length > NDIS_802_11_LENGTH_SSID)
2226                 length = NDIS_802_11_LENGTH_SSID;
2227
2228         memset(&ssid, 0, sizeof(ssid));
2229         ssid.length = cpu_to_le32(length);
2230         memcpy(ssid.essid, sme->ssid, length);
2231
2232         /* Pause and purge rx queue, so we don't pass packets before
2233          * 'media connect'-indication.
2234          */
2235         usbnet_pause_rx(usbdev);
2236         usbnet_purge_paused_rxq(usbdev);
2237
2238         ret = set_essid(usbdev, &ssid);
2239         if (ret < 0)
2240                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2241         return ret;
2242
2243 err_turn_radio_on:
2244         disassociate(usbdev, true);
2245
2246         return ret;
2247 }
2248
2249 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2250                                                                 u16 reason_code)
2251 {
2252         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2253         struct usbnet *usbdev = priv->usbdev;
2254
2255         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2256
2257         priv->connected = false;
2258         eth_zero_addr(priv->bssid);
2259
2260         return deauthenticate(usbdev);
2261 }
2262
2263 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2264                                         struct cfg80211_ibss_params *params)
2265 {
2266         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2267         struct usbnet *usbdev = priv->usbdev;
2268         struct ieee80211_channel *channel = params->chandef.chan;
2269         struct ndis_80211_ssid ssid;
2270         enum nl80211_auth_type auth_type;
2271         int ret, alg, length, chan = -1;
2272
2273         if (channel)
2274                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2275
2276         /* TODO: How to handle ad-hoc encryption?
2277          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2278          * pre-shared for encryption (open/shared/wpa), is key set before
2279          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2280          */
2281         if (params->privacy) {
2282                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2283                 alg = RNDIS_WLAN_ALG_WEP;
2284         } else {
2285                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2286                 alg = RNDIS_WLAN_ALG_NONE;
2287         }
2288
2289         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2290                    params->ssid, params->bssid, chan, params->privacy);
2291
2292         if (is_associated(usbdev))
2293                 disassociate(usbdev, false);
2294
2295         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2296         if (ret < 0) {
2297                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2298                            ret);
2299                 goto err_turn_radio_on;
2300         }
2301
2302         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2303         if (ret < 0) {
2304                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2305                            ret);
2306                 goto err_turn_radio_on;
2307         }
2308
2309         set_priv_filter(usbdev);
2310
2311         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2312         if (ret < 0) {
2313                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2314                            ret);
2315                 goto err_turn_radio_on;
2316         }
2317
2318         if (channel) {
2319                 ret = set_channel(usbdev, chan);
2320                 if (ret < 0) {
2321                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2322                                    ret);
2323                         goto err_turn_radio_on;
2324                 }
2325         }
2326
2327         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2328                                 !is_broadcast_ether_addr(params->bssid)) {
2329                 ret = set_bssid(usbdev, params->bssid);
2330                 if (ret < 0) {
2331                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2332                                    ret);
2333                         goto err_turn_radio_on;
2334                 }
2335         } else
2336                 clear_bssid(usbdev);
2337
2338         length = params->ssid_len;
2339         if (length > NDIS_802_11_LENGTH_SSID)
2340                 length = NDIS_802_11_LENGTH_SSID;
2341
2342         memset(&ssid, 0, sizeof(ssid));
2343         ssid.length = cpu_to_le32(length);
2344         memcpy(ssid.essid, params->ssid, length);
2345
2346         /* Don't need to pause rx queue for ad-hoc. */
2347         usbnet_purge_paused_rxq(usbdev);
2348         usbnet_resume_rx(usbdev);
2349
2350         ret = set_essid(usbdev, &ssid);
2351         if (ret < 0)
2352                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2353                            ret);
2354         return ret;
2355
2356 err_turn_radio_on:
2357         disassociate(usbdev, true);
2358
2359         return ret;
2360 }
2361
2362 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2363 {
2364         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2365         struct usbnet *usbdev = priv->usbdev;
2366
2367         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2368
2369         priv->connected = false;
2370         eth_zero_addr(priv->bssid);
2371
2372         return deauthenticate(usbdev);
2373 }
2374
2375 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2376                          u8 key_index, bool pairwise, const u8 *mac_addr,
2377                          struct key_params *params)
2378 {
2379         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2380         struct usbnet *usbdev = priv->usbdev;
2381         __le32 flags;
2382
2383         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2384                    __func__, key_index, mac_addr, params->cipher);
2385
2386         switch (params->cipher) {
2387         case WLAN_CIPHER_SUITE_WEP40:
2388         case WLAN_CIPHER_SUITE_WEP104:
2389                 return add_wep_key(usbdev, params->key, params->key_len,
2390                                                                 key_index);
2391         case WLAN_CIPHER_SUITE_TKIP:
2392         case WLAN_CIPHER_SUITE_CCMP:
2393                 flags = 0;
2394
2395                 if (params->seq && params->seq_len > 0)
2396                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2397                 if (mac_addr)
2398                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2399                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2400
2401                 return add_wpa_key(usbdev, params->key, params->key_len,
2402                                 key_index, mac_addr, params->seq,
2403                                 params->seq_len, params->cipher, flags);
2404         default:
2405                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2406                            __func__, params->cipher);
2407                 return -ENOTSUPP;
2408         }
2409 }
2410
2411 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2412                          u8 key_index, bool pairwise, const u8 *mac_addr)
2413 {
2414         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2415         struct usbnet *usbdev = priv->usbdev;
2416
2417         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2418
2419         return remove_key(usbdev, key_index, mac_addr);
2420 }
2421
2422 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2423                                  u8 key_index, bool unicast, bool multicast)
2424 {
2425         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2426         struct usbnet *usbdev = priv->usbdev;
2427         struct rndis_wlan_encr_key key;
2428
2429         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2430
2431         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2432                 return -ENOENT;
2433
2434         priv->encr_tx_key_index = key_index;
2435
2436         if (is_wpa_key(priv, key_index))
2437                 return 0;
2438
2439         key = priv->encr_keys[key_index];
2440
2441         return add_wep_key(usbdev, key.material, key.len, key_index);
2442 }
2443
2444 static void rndis_fill_station_info(struct usbnet *usbdev,
2445                                                 struct station_info *sinfo)
2446 {
2447         __le32 linkspeed, rssi;
2448         int ret, len;
2449
2450         memset(sinfo, 0, sizeof(*sinfo));
2451
2452         len = sizeof(linkspeed);
2453         ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2454         if (ret == 0) {
2455                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2456                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2457         }
2458
2459         len = sizeof(rssi);
2460         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2461                               &rssi, &len);
2462         if (ret == 0) {
2463                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2464                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2465         }
2466 }
2467
2468 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2469                              const u8 *mac, struct station_info *sinfo)
2470 {
2471         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2472         struct usbnet *usbdev = priv->usbdev;
2473
2474         if (!ether_addr_equal(priv->bssid, mac))
2475                 return -ENOENT;
2476
2477         rndis_fill_station_info(usbdev, sinfo);
2478
2479         return 0;
2480 }
2481
2482 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2483                                int idx, u8 *mac, struct station_info *sinfo)
2484 {
2485         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2486         struct usbnet *usbdev = priv->usbdev;
2487
2488         if (idx != 0)
2489                 return -ENOENT;
2490
2491         memcpy(mac, priv->bssid, ETH_ALEN);
2492
2493         rndis_fill_station_info(usbdev, sinfo);
2494
2495         return 0;
2496 }
2497
2498 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2499                                 struct cfg80211_pmksa *pmksa)
2500 {
2501         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2502         struct usbnet *usbdev = priv->usbdev;
2503         struct ndis_80211_pmkid *pmkids;
2504         u32 *tmp = (u32 *)pmksa->pmkid;
2505
2506         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2507                         pmksa->bssid,
2508                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2509                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2510
2511         pmkids = get_device_pmkids(usbdev);
2512         if (IS_ERR(pmkids)) {
2513                 /* couldn't read PMKID cache from device */
2514                 return PTR_ERR(pmkids);
2515         }
2516
2517         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2518         if (IS_ERR(pmkids)) {
2519                 /* not found, list full, etc */
2520                 return PTR_ERR(pmkids);
2521         }
2522
2523         return set_device_pmkids(usbdev, pmkids);
2524 }
2525
2526 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2527                                 struct cfg80211_pmksa *pmksa)
2528 {
2529         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2530         struct usbnet *usbdev = priv->usbdev;
2531         struct ndis_80211_pmkid *pmkids;
2532         u32 *tmp = (u32 *)pmksa->pmkid;
2533
2534         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2535                         pmksa->bssid,
2536                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2537                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2538
2539         pmkids = get_device_pmkids(usbdev);
2540         if (IS_ERR(pmkids)) {
2541                 /* Couldn't read PMKID cache from device */
2542                 return PTR_ERR(pmkids);
2543         }
2544
2545         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2546         if (IS_ERR(pmkids)) {
2547                 /* not found, etc */
2548                 return PTR_ERR(pmkids);
2549         }
2550
2551         return set_device_pmkids(usbdev, pmkids);
2552 }
2553
2554 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2555 {
2556         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2557         struct usbnet *usbdev = priv->usbdev;
2558         struct ndis_80211_pmkid pmkid;
2559
2560         netdev_dbg(usbdev->net, "%s()\n", __func__);
2561
2562         memset(&pmkid, 0, sizeof(pmkid));
2563
2564         pmkid.length = cpu_to_le32(sizeof(pmkid));
2565         pmkid.bssid_info_count = cpu_to_le32(0);
2566
2567         return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2568                              &pmkid, sizeof(pmkid));
2569 }
2570
2571 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2572                                 bool enabled, int timeout)
2573 {
2574         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2575         struct usbnet *usbdev = priv->usbdev;
2576         int power_mode;
2577         __le32 mode;
2578         int ret;
2579
2580         if (priv->device_type != RNDIS_BCM4320B)
2581                 return -ENOTSUPP;
2582
2583         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2584                                 enabled ? "enabled" : "disabled",
2585                                 timeout);
2586
2587         if (enabled)
2588                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2589         else
2590                 power_mode = NDIS_80211_POWER_MODE_CAM;
2591
2592         if (power_mode == priv->power_mode)
2593                 return 0;
2594
2595         priv->power_mode = power_mode;
2596
2597         mode = cpu_to_le32(power_mode);
2598         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2599                             &mode, sizeof(mode));
2600
2601         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2602                                 __func__, ret);
2603
2604         return ret;
2605 }
2606
2607 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2608                                         struct net_device *dev,
2609                                         s32 rssi_thold, u32 rssi_hyst)
2610 {
2611         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2612
2613         priv->cqm_rssi_thold = rssi_thold;
2614         priv->cqm_rssi_hyst = rssi_hyst;
2615         priv->last_cqm_event_rssi = 0;
2616
2617         return 0;
2618 }
2619
2620 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2621                                            struct ndis_80211_assoc_info *info)
2622 {
2623         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2624         struct ieee80211_channel *channel;
2625         struct ndis_80211_ssid ssid;
2626         struct cfg80211_bss *bss;
2627         s32 signal;
2628         u64 timestamp;
2629         u16 capability;
2630         u32 beacon_period = 0;
2631         __le32 rssi;
2632         u8 ie_buf[34];
2633         int len, ret, ie_len;
2634
2635         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2636         len = sizeof(rssi);
2637         rssi = 0;
2638         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2639                               &rssi, &len);
2640         signal = level_to_qual(le32_to_cpu(rssi));
2641
2642         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2643                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2644                    level_to_qual(le32_to_cpu(rssi)));
2645
2646         /* Get AP capabilities */
2647         if (info) {
2648                 capability = le16_to_cpu(info->resp_ie.capa);
2649         } else {
2650                 /* Set atleast ESS/IBSS capability */
2651                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2652                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2653         }
2654
2655         /* Get channel and beacon interval */
2656         channel = get_current_channel(usbdev, &beacon_period);
2657         if (!channel) {
2658                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2659                                         __func__);
2660                 return;
2661         }
2662
2663         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2664         len = sizeof(ssid);
2665         memset(&ssid, 0, sizeof(ssid));
2666         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2667                               &ssid, &len);
2668         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2669                                 "'%.32s'\n", __func__, ret,
2670                                 le32_to_cpu(ssid.length), ssid.essid);
2671
2672         if (le32_to_cpu(ssid.length) > 32)
2673                 ssid.length = cpu_to_le32(32);
2674
2675         ie_buf[0] = WLAN_EID_SSID;
2676         ie_buf[1] = le32_to_cpu(ssid.length);
2677         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2678
2679         ie_len = le32_to_cpu(ssid.length) + 2;
2680
2681         /* no tsf */
2682         timestamp = 0;
2683
2684         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2685                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2686                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2687                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2688                 ssid.essid, signal);
2689
2690         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2691                                   CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2692                                   timestamp, capability, beacon_period,
2693                                   ie_buf, ie_len, signal, GFP_KERNEL);
2694         cfg80211_put_bss(priv->wdev.wiphy, bss);
2695 }
2696
2697 /*
2698  * workers, indication handlers, device poller
2699  */
2700 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2701 {
2702         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2703         struct ndis_80211_assoc_info *info = NULL;
2704         u8 bssid[ETH_ALEN];
2705         unsigned int resp_ie_len, req_ie_len;
2706         unsigned int offset;
2707         u8 *req_ie, *resp_ie;
2708         int ret;
2709         bool roamed = false;
2710         bool match_bss;
2711
2712         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2713                 /* received media connect indication while connected, either
2714                  * device reassociated with same AP or roamed to new. */
2715                 roamed = true;
2716         }
2717
2718         req_ie_len = 0;
2719         resp_ie_len = 0;
2720         req_ie = NULL;
2721         resp_ie = NULL;
2722
2723         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2724                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2725                 if (!info) {
2726                         /* No memory? Try resume work later */
2727                         set_bit(WORK_LINK_UP, &priv->work_pending);
2728                         queue_work(priv->workqueue, &priv->work);
2729                         return;
2730                 }
2731
2732                 /* Get association info IEs from device. */
2733                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2734                 if (!ret) {
2735                         req_ie_len = le32_to_cpu(info->req_ie_length);
2736                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2737                                 req_ie_len = CONTROL_BUFFER_SIZE;
2738                         if (req_ie_len != 0) {
2739                                 offset = le32_to_cpu(info->offset_req_ies);
2740
2741                                 if (offset > CONTROL_BUFFER_SIZE)
2742                                         offset = CONTROL_BUFFER_SIZE;
2743
2744                                 req_ie = (u8 *)info + offset;
2745
2746                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2747                                         req_ie_len =
2748                                                 CONTROL_BUFFER_SIZE - offset;
2749                         }
2750
2751                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2752                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2753                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2754                         if (resp_ie_len != 0) {
2755                                 offset = le32_to_cpu(info->offset_resp_ies);
2756
2757                                 if (offset > CONTROL_BUFFER_SIZE)
2758                                         offset = CONTROL_BUFFER_SIZE;
2759
2760                                 resp_ie = (u8 *)info + offset;
2761
2762                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2763                                         resp_ie_len =
2764                                                 CONTROL_BUFFER_SIZE - offset;
2765                         }
2766                 } else {
2767                         /* Since rndis_wlan_craft_connected_bss() might use info
2768                          * later and expects info to contain valid data if
2769                          * non-null, free info and set NULL here.
2770                          */
2771                         kfree(info);
2772                         info = NULL;
2773                 }
2774         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2775                 return;
2776
2777         ret = get_bssid(usbdev, bssid);
2778         if (ret < 0)
2779                 memset(bssid, 0, sizeof(bssid));
2780
2781         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2782                    bssid, roamed ? " roamed" : "");
2783
2784         /* Internal bss list in device should contain at least the currently
2785          * connected bss and we can get it to cfg80211 with
2786          * rndis_check_bssid_list().
2787          *
2788          * NDIS spec says: "If the device is associated, but the associated
2789          *  BSSID is not in its BSSID scan list, then the driver must add an
2790          *  entry for the BSSID at the end of the data that it returns in
2791          *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2792          *
2793          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2794          */
2795         match_bss = false;
2796         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2797
2798         if (!is_zero_ether_addr(bssid) && !match_bss) {
2799                 /* Couldn't get bss from device, we need to manually craft bss
2800                  * for cfg80211.
2801                  */
2802                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2803         }
2804
2805         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2806                 if (!roamed) {
2807                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2808                                                 req_ie_len, resp_ie,
2809                                                 resp_ie_len, 0, GFP_KERNEL);
2810                 } else {
2811                         struct cfg80211_roam_info roam_info = {
2812                                 .channel = get_current_channel(usbdev, NULL),
2813                                 .bssid = bssid,
2814                                 .req_ie = req_ie,
2815                                 .req_ie_len = req_ie_len,
2816                                 .resp_ie = resp_ie,
2817                                 .resp_ie_len = resp_ie_len,
2818                         };
2819
2820                         cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2821                 }
2822         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2823                 cfg80211_ibss_joined(usbdev->net, bssid,
2824                                      get_current_channel(usbdev, NULL),
2825                                      GFP_KERNEL);
2826
2827         kfree(info);
2828
2829         priv->connected = true;
2830         memcpy(priv->bssid, bssid, ETH_ALEN);
2831
2832         usbnet_resume_rx(usbdev);
2833         netif_carrier_on(usbdev->net);
2834 }
2835
2836 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2837 {
2838         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2839
2840         if (priv->connected) {
2841                 priv->connected = false;
2842                 eth_zero_addr(priv->bssid);
2843
2844                 deauthenticate(usbdev);
2845
2846                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2847         }
2848
2849         netif_carrier_off(usbdev->net);
2850 }
2851
2852 static void rndis_wlan_worker(struct work_struct *work)
2853 {
2854         struct rndis_wlan_private *priv =
2855                 container_of(work, struct rndis_wlan_private, work);
2856         struct usbnet *usbdev = priv->usbdev;
2857
2858         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2859                 rndis_wlan_do_link_up_work(usbdev);
2860
2861         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2862                 rndis_wlan_do_link_down_work(usbdev);
2863
2864         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2865                 set_multicast_list(usbdev);
2866 }
2867
2868 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2869 {
2870         struct usbnet *usbdev = netdev_priv(dev);
2871         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2872
2873         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2874                 return;
2875
2876         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2877         queue_work(priv->workqueue, &priv->work);
2878 }
2879
2880 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2881                                 struct ndis_80211_status_indication *indication,
2882                                 int len)
2883 {
2884         u8 *buf;
2885         const char *type;
2886         int flags, buflen, key_id;
2887         bool pairwise_error, group_error;
2888         struct ndis_80211_auth_request *auth_req;
2889         enum nl80211_key_type key_type;
2890
2891         /* must have at least one array entry */
2892         if (len < offsetof(struct ndis_80211_status_indication, u) +
2893                                 sizeof(struct ndis_80211_auth_request)) {
2894                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2895                             len);
2896                 return;
2897         }
2898
2899         buf = (void *)&indication->u.auth_request[0];
2900         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2901
2902         while (buflen >= sizeof(*auth_req)) {
2903                 auth_req = (void *)buf;
2904                 if (buflen < le32_to_cpu(auth_req->length))
2905                         return;
2906                 type = "unknown";
2907                 flags = le32_to_cpu(auth_req->flags);
2908                 pairwise_error = false;
2909                 group_error = false;
2910
2911                 if (flags & 0x1)
2912                         type = "reauth request";
2913                 if (flags & 0x2)
2914                         type = "key update request";
2915                 if (flags & 0x6) {
2916                         pairwise_error = true;
2917                         type = "pairwise_error";
2918                 }
2919                 if (flags & 0xe) {
2920                         group_error = true;
2921                         type = "group_error";
2922                 }
2923
2924                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2925                             type, le32_to_cpu(auth_req->flags));
2926
2927                 if (pairwise_error) {
2928                         key_type = NL80211_KEYTYPE_PAIRWISE;
2929                         key_id = -1;
2930
2931                         cfg80211_michael_mic_failure(usbdev->net,
2932                                                         auth_req->bssid,
2933                                                         key_type, key_id, NULL,
2934                                                         GFP_KERNEL);
2935                 }
2936
2937                 if (group_error) {
2938                         key_type = NL80211_KEYTYPE_GROUP;
2939                         key_id = -1;
2940
2941                         cfg80211_michael_mic_failure(usbdev->net,
2942                                                         auth_req->bssid,
2943                                                         key_type, key_id, NULL,
2944                                                         GFP_KERNEL);
2945                 }
2946
2947                 buflen -= le32_to_cpu(auth_req->length);
2948                 buf += le32_to_cpu(auth_req->length);
2949         }
2950 }
2951
2952 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2953                                 struct ndis_80211_status_indication *indication,
2954                                 int len)
2955 {
2956         struct ndis_80211_pmkid_cand_list *cand_list;
2957         int list_len, expected_len, i;
2958
2959         if (len < offsetof(struct ndis_80211_status_indication, u) +
2960                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2961                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2962                             len);
2963                 return;
2964         }
2965
2966         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2967                         sizeof(struct ndis_80211_pmkid_candidate);
2968         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2969                         offsetof(struct ndis_80211_status_indication, u);
2970
2971         if (len < expected_len) {
2972                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2973                             len, expected_len);
2974                 return;
2975         }
2976
2977         cand_list = &indication->u.cand_list;
2978
2979         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2980                     le32_to_cpu(cand_list->version),
2981                     le32_to_cpu(cand_list->num_candidates));
2982
2983         if (le32_to_cpu(cand_list->version) != 1)
2984                 return;
2985
2986         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2987                 struct ndis_80211_pmkid_candidate *cand =
2988                                                 &cand_list->candidate_list[i];
2989                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
2990
2991                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
2992                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
2993
2994                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
2995                                                 preauth, GFP_ATOMIC);
2996         }
2997 }
2998
2999 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3000                         struct rndis_indicate *msg, int buflen)
3001 {
3002         struct ndis_80211_status_indication *indication;
3003         unsigned int len, offset;
3004
3005         offset = offsetof(struct rndis_indicate, status) +
3006                         le32_to_cpu(msg->offset);
3007         len = le32_to_cpu(msg->length);
3008
3009         if (len < 8) {
3010                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3011                             len);
3012                 return;
3013         }
3014
3015         if (len > buflen || offset > buflen || offset + len > buflen) {
3016                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3017                             offset + len, buflen);
3018                 return;
3019         }
3020
3021         indication = (void *)((u8 *)msg + offset);
3022
3023         switch (le32_to_cpu(indication->status_type)) {
3024         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3025                 netdev_info(usbdev->net, "radio state indication: %i\n",
3026                             le32_to_cpu(indication->u.radio_status));
3027                 return;
3028
3029         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3030                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3031                             le32_to_cpu(indication->u.media_stream_mode));
3032                 return;
3033
3034         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3035                 rndis_wlan_auth_indication(usbdev, indication, len);
3036                 return;
3037
3038         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3039                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3040                 return;
3041
3042         default:
3043                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3044                             le32_to_cpu(indication->status_type));
3045         }
3046 }
3047
3048 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3049 {
3050         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3051         struct rndis_indicate *msg = ind;
3052
3053         switch (le32_to_cpu(msg->status)) {
3054         case RNDIS_STATUS_MEDIA_CONNECT:
3055                 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3056                         /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3057                          * "media connect" indications which confuses driver
3058                          * and userspace to think that device is
3059                          * roaming/reassociating when it isn't.
3060                          */
3061                         netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3062                         return;
3063                 }
3064
3065                 usbnet_pause_rx(usbdev);
3066
3067                 netdev_info(usbdev->net, "media connect\n");
3068
3069                 /* queue work to avoid recursive calls into rndis_command */
3070                 set_bit(WORK_LINK_UP, &priv->work_pending);
3071                 queue_work(priv->workqueue, &priv->work);
3072                 break;
3073
3074         case RNDIS_STATUS_MEDIA_DISCONNECT:
3075                 netdev_info(usbdev->net, "media disconnect\n");
3076
3077                 /* queue work to avoid recursive calls into rndis_command */
3078                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3079                 queue_work(priv->workqueue, &priv->work);
3080                 break;
3081
3082         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3083                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3084                 break;
3085
3086         default:
3087                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3088                             le32_to_cpu(msg->status));
3089                 break;
3090         }
3091 }
3092
3093 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3094 {
3095         struct {
3096                 __le32  num_items;
3097                 __le32  items[8];
3098         } networks_supported;
3099         struct ndis_80211_capability caps;
3100         int len, retval, i, n;
3101         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3102
3103         /* determine supported modes */
3104         len = sizeof(networks_supported);
3105         retval = rndis_query_oid(usbdev,
3106                                  RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3107                                  &networks_supported, &len);
3108         if (!retval) {
3109                 n = le32_to_cpu(networks_supported.num_items);
3110                 if (n > 8)
3111                         n = 8;
3112                 for (i = 0; i < n; i++) {
3113                         switch (le32_to_cpu(networks_supported.items[i])) {
3114                         case NDIS_80211_TYPE_FREQ_HOP:
3115                         case NDIS_80211_TYPE_DIRECT_SEQ:
3116                                 priv->caps |= CAP_MODE_80211B;
3117                                 break;
3118                         case NDIS_80211_TYPE_OFDM_A:
3119                                 priv->caps |= CAP_MODE_80211A;
3120                                 break;
3121                         case NDIS_80211_TYPE_OFDM_G:
3122                                 priv->caps |= CAP_MODE_80211G;
3123                                 break;
3124                         }
3125                 }
3126         }
3127
3128         /* get device 802.11 capabilities, number of PMKIDs */
3129         len = sizeof(caps);
3130         retval = rndis_query_oid(usbdev,
3131                                  RNDIS_OID_802_11_CAPABILITY,
3132                                  &caps, &len);
3133         if (!retval) {
3134                 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3135                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3136                                 le32_to_cpu(caps.length),
3137                                 le32_to_cpu(caps.version),
3138                                 le32_to_cpu(caps.num_pmkids),
3139                                 le32_to_cpu(caps.num_auth_encr_pair));
3140                 wiphy->max_num_pmkids = le32_to_cpu(caps.num_pmkids);
3141         } else
3142                 wiphy->max_num_pmkids = 0;
3143
3144         return retval;
3145 }
3146
3147 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3148 {
3149         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3150         enum nl80211_cqm_rssi_threshold_event event;
3151         int thold, hyst, last_event;
3152
3153         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3154                 return;
3155         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3156                 return;
3157
3158         last_event = priv->last_cqm_event_rssi;
3159         thold = priv->cqm_rssi_thold;
3160         hyst = priv->cqm_rssi_hyst;
3161
3162         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3163                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3164         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3165                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3166         else
3167                 return;
3168
3169         priv->last_cqm_event_rssi = rssi;
3170         cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3171 }
3172
3173 #define DEVICE_POLLER_JIFFIES (HZ)
3174 static void rndis_device_poller(struct work_struct *work)
3175 {
3176         struct rndis_wlan_private *priv =
3177                 container_of(work, struct rndis_wlan_private,
3178                                                         dev_poller_work.work);
3179         struct usbnet *usbdev = priv->usbdev;
3180         __le32 rssi, tmp;
3181         int len, ret, j;
3182         int update_jiffies = DEVICE_POLLER_JIFFIES;
3183         void *buf;
3184
3185         /* Only check/do workaround when connected. Calling is_associated()
3186          * also polls device with rndis_command() and catches for media link
3187          * indications.
3188          */
3189         if (!is_associated(usbdev)) {
3190                 /* Workaround bad scanning in BCM4320a devices with active
3191                  * background scanning when not associated.
3192                  */
3193                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3194                     !priv->scan_request) {
3195                         /* Get previous scan results */
3196                         rndis_check_bssid_list(usbdev, NULL, NULL);
3197
3198                         /* Initiate new scan */
3199                         rndis_start_bssid_list_scan(usbdev);
3200                 }
3201
3202                 goto end;
3203         }
3204
3205         len = sizeof(rssi);
3206         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3207                               &rssi, &len);
3208         if (ret == 0) {
3209                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3210                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3211         }
3212
3213         netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3214                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3215
3216         /* Workaround transfer stalls on poor quality links.
3217          * TODO: find right way to fix these stalls (as stalls do not happen
3218          * with ndiswrapper/windows driver). */
3219         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3220                 /* Decrease stats worker interval to catch stalls.
3221                  * faster. Faster than 400-500ms causes packet loss,
3222                  * Slower doesn't catch stalls fast enough.
3223                  */
3224                 j = msecs_to_jiffies(priv->param_workaround_interval);
3225                 if (j > DEVICE_POLLER_JIFFIES)
3226                         j = DEVICE_POLLER_JIFFIES;
3227                 else if (j <= 0)
3228                         j = 1;
3229                 update_jiffies = j;
3230
3231                 /* Send scan OID. Use of both OIDs is required to get device
3232                  * working.
3233                  */
3234                 tmp = cpu_to_le32(1);
3235                 rndis_set_oid(usbdev,
3236                               RNDIS_OID_802_11_BSSID_LIST_SCAN,
3237                               &tmp, sizeof(tmp));
3238
3239                 len = CONTROL_BUFFER_SIZE;
3240                 buf = kmalloc(len, GFP_KERNEL);
3241                 if (!buf)
3242                         goto end;
3243
3244                 rndis_query_oid(usbdev,
3245                                 RNDIS_OID_802_11_BSSID_LIST,
3246                                 buf, &len);
3247                 kfree(buf);
3248         }
3249
3250 end:
3251         if (update_jiffies >= HZ)
3252                 update_jiffies = round_jiffies_relative(update_jiffies);
3253         else {
3254                 j = round_jiffies_relative(update_jiffies);
3255                 if (abs(j - update_jiffies) <= 10)
3256                         update_jiffies = j;
3257         }
3258
3259         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3260                                                                 update_jiffies);
3261 }
3262
3263 /*
3264  * driver/device initialization
3265  */
3266 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3267 {
3268         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3269
3270         priv->device_type = device_type;
3271
3272         priv->param_country[0] = modparam_country[0];
3273         priv->param_country[1] = modparam_country[1];
3274         priv->param_country[2] = 0;
3275         priv->param_frameburst   = modparam_frameburst;
3276         priv->param_afterburner  = modparam_afterburner;
3277         priv->param_power_save   = modparam_power_save;
3278         priv->param_power_output = modparam_power_output;
3279         priv->param_roamtrigger  = modparam_roamtrigger;
3280         priv->param_roamdelta    = modparam_roamdelta;
3281
3282         priv->param_country[0] = toupper(priv->param_country[0]);
3283         priv->param_country[1] = toupper(priv->param_country[1]);
3284         /* doesn't support EU as country code, use FI instead */
3285         if (!strcmp(priv->param_country, "EU"))
3286                 strcpy(priv->param_country, "FI");
3287
3288         if (priv->param_power_save < 0)
3289                 priv->param_power_save = 0;
3290         else if (priv->param_power_save > 2)
3291                 priv->param_power_save = 2;
3292
3293         if (priv->param_power_output < 0)
3294                 priv->param_power_output = 0;
3295         else if (priv->param_power_output > 3)
3296                 priv->param_power_output = 3;
3297
3298         if (priv->param_roamtrigger < -80)
3299                 priv->param_roamtrigger = -80;
3300         else if (priv->param_roamtrigger > -60)
3301                 priv->param_roamtrigger = -60;
3302
3303         if (priv->param_roamdelta < 0)
3304                 priv->param_roamdelta = 0;
3305         else if (priv->param_roamdelta > 2)
3306                 priv->param_roamdelta = 2;
3307
3308         if (modparam_workaround_interval < 0)
3309                 priv->param_workaround_interval = 500;
3310         else
3311                 priv->param_workaround_interval = modparam_workaround_interval;
3312 }
3313
3314 static int unknown_early_init(struct usbnet *usbdev)
3315 {
3316         /* copy module parameters for unknown so that iwconfig reports txpower
3317          * and workaround parameter is copied to private structure correctly.
3318          */
3319         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3320
3321         /* This is unknown device, so do not try set configuration parameters.
3322          */
3323
3324         return 0;
3325 }
3326
3327 static int bcm4320a_early_init(struct usbnet *usbdev)
3328 {
3329         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3330          * and workaround parameter is copied to private structure correctly.
3331          */
3332         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3333
3334         /* bcm4320a doesn't handle configuration parameters well. Try
3335          * set any and you get partially zeroed mac and broken device.
3336          */
3337
3338         return 0;
3339 }
3340
3341 static int bcm4320b_early_init(struct usbnet *usbdev)
3342 {
3343         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3344         char buf[8];
3345
3346         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3347
3348         /* Early initialization settings, setting these won't have effect
3349          * if called after generic_rndis_bind().
3350          */
3351
3352         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3353         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3354                                         priv->param_frameburst ? "1" : "0");
3355         rndis_set_config_parameter_str(usbdev, "Afterburner",
3356                                         priv->param_afterburner ? "1" : "0");
3357         sprintf(buf, "%d", priv->param_power_save);
3358         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3359         sprintf(buf, "%d", priv->param_power_output);
3360         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3361         sprintf(buf, "%d", priv->param_roamtrigger);
3362         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3363         sprintf(buf, "%d", priv->param_roamdelta);
3364         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3365
3366         return 0;
3367 }
3368
3369 /* same as rndis_netdev_ops but with local multicast handler */
3370 static const struct net_device_ops rndis_wlan_netdev_ops = {
3371         .ndo_open               = usbnet_open,
3372         .ndo_stop               = usbnet_stop,
3373         .ndo_start_xmit         = usbnet_start_xmit,
3374         .ndo_tx_timeout         = usbnet_tx_timeout,
3375         .ndo_get_stats64        = usbnet_get_stats64,
3376         .ndo_set_mac_address    = eth_mac_addr,
3377         .ndo_validate_addr      = eth_validate_addr,
3378         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3379 };
3380
3381 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3382 {
3383         struct wiphy *wiphy;
3384         struct rndis_wlan_private *priv;
3385         int retval, len;
3386         __le32 tmp;
3387
3388         /* allocate wiphy and rndis private data
3389          * NOTE: We only support a single virtual interface, so wiphy
3390          * and wireless_dev are somewhat synonymous for this device.
3391          */
3392         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3393         if (!wiphy)
3394                 return -ENOMEM;
3395
3396         priv = wiphy_priv(wiphy);
3397         usbdev->net->ieee80211_ptr = &priv->wdev;
3398         priv->wdev.wiphy = wiphy;
3399         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3400
3401         /* These have to be initialized before calling generic_rndis_bind().
3402          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3403          */
3404         usbdev->driver_priv = priv;
3405         priv->usbdev = usbdev;
3406
3407         mutex_init(&priv->command_lock);
3408
3409         /* because rndis_command() sleeps we need to use workqueue */
3410         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3411         if (!priv->workqueue) {
3412                 wiphy_free(wiphy);
3413                 return -ENOMEM;
3414         }
3415         INIT_WORK(&priv->work, rndis_wlan_worker);
3416         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3417         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3418
3419         /* try bind rndis_host */
3420         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3421         if (retval < 0)
3422                 goto fail;
3423
3424         /* generic_rndis_bind set packet filter to multicast_all+
3425          * promisc mode which doesn't work well for our devices (device
3426          * picks up rssi to closest station instead of to access point).
3427          *
3428          * rndis_host wants to avoid all OID as much as possible
3429          * so do promisc/multicast handling in rndis_wlan.
3430          */
3431         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3432
3433         tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3434         retval = rndis_set_oid(usbdev,
3435                                RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3436                                &tmp, sizeof(tmp));
3437
3438         len = sizeof(tmp);
3439         retval = rndis_query_oid(usbdev,
3440                                  RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3441                                  &tmp, &len);
3442         priv->multicast_size = le32_to_cpu(tmp);
3443         if (retval < 0 || priv->multicast_size < 0)
3444                 priv->multicast_size = 0;
3445         if (priv->multicast_size > 0)
3446                 usbdev->net->flags |= IFF_MULTICAST;
3447         else
3448                 usbdev->net->flags &= ~IFF_MULTICAST;
3449
3450         /* fill-out wiphy structure and register w/ cfg80211 */
3451         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3452         wiphy->privid = rndis_wiphy_privid;
3453         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3454                                         | BIT(NL80211_IFTYPE_ADHOC);
3455         wiphy->max_scan_ssids = 1;
3456
3457         /* TODO: fill-out band/encr information based on priv->caps */
3458         rndis_wlan_get_caps(usbdev, wiphy);
3459
3460         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3461         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3462         priv->band.channels = priv->channels;
3463         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3464         priv->band.bitrates = priv->rates;
3465         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3466         wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3467         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3468
3469         memcpy(priv->cipher_suites, rndis_cipher_suites,
3470                                                 sizeof(rndis_cipher_suites));
3471         wiphy->cipher_suites = priv->cipher_suites;
3472         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3473
3474         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3475
3476         if (wiphy_register(wiphy)) {
3477                 retval = -ENODEV;
3478                 goto fail;
3479         }
3480
3481         set_default_iw_params(usbdev);
3482
3483         priv->power_mode = -1;
3484
3485         /* set default rts/frag */
3486         rndis_set_wiphy_params(wiphy,
3487                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3488
3489         /* turn radio off on init */
3490         priv->radio_on = false;
3491         disassociate(usbdev, false);
3492         netif_carrier_off(usbdev->net);
3493
3494         return 0;
3495
3496 fail:
3497         cancel_delayed_work_sync(&priv->dev_poller_work);
3498         cancel_delayed_work_sync(&priv->scan_work);
3499         cancel_work_sync(&priv->work);
3500         destroy_workqueue(priv->workqueue);
3501
3502         wiphy_free(wiphy);
3503         return retval;
3504 }
3505
3506 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3507 {
3508         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3509
3510         /* turn radio off */
3511         disassociate(usbdev, false);
3512
3513         cancel_delayed_work_sync(&priv->dev_poller_work);
3514         cancel_delayed_work_sync(&priv->scan_work);
3515         cancel_work_sync(&priv->work);
3516         destroy_workqueue(priv->workqueue);
3517
3518         rndis_unbind(usbdev, intf);
3519
3520         wiphy_unregister(priv->wdev.wiphy);
3521         wiphy_free(priv->wdev.wiphy);
3522 }
3523
3524 static int rndis_wlan_reset(struct usbnet *usbdev)
3525 {
3526         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3527         int retval;
3528
3529         netdev_dbg(usbdev->net, "%s()\n", __func__);
3530
3531         retval = rndis_reset(usbdev);
3532         if (retval)
3533                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3534
3535         /* rndis_reset cleared multicast list, so restore here.
3536            (set_multicast_list() also turns on current packet filter) */
3537         set_multicast_list(usbdev);
3538
3539         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3540                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3541
3542         return deauthenticate(usbdev);
3543 }
3544
3545 static int rndis_wlan_stop(struct usbnet *usbdev)
3546 {
3547         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3548         int retval;
3549         __le32 filter;
3550
3551         netdev_dbg(usbdev->net, "%s()\n", __func__);
3552
3553         retval = disassociate(usbdev, false);
3554
3555         priv->work_pending = 0;
3556         cancel_delayed_work_sync(&priv->dev_poller_work);
3557         cancel_delayed_work_sync(&priv->scan_work);
3558         cancel_work_sync(&priv->work);
3559         flush_workqueue(priv->workqueue);
3560
3561         if (priv->scan_request) {
3562                 struct cfg80211_scan_info info = {
3563                         .aborted = true,
3564                 };
3565
3566                 cfg80211_scan_done(priv->scan_request, &info);
3567                 priv->scan_request = NULL;
3568         }
3569
3570         /* Set current packet filter zero to block receiving data packets from
3571            device. */
3572         filter = 0;
3573         rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3574                                                                 sizeof(filter));
3575
3576         return retval;
3577 }
3578
3579 static const struct driver_info bcm4320b_info = {
3580         .description =  "Wireless RNDIS device, BCM4320b based",
3581         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3582                                 FLAG_AVOID_UNLINK_URBS,
3583         .bind =         rndis_wlan_bind,
3584         .unbind =       rndis_wlan_unbind,
3585         .status =       rndis_status,
3586         .rx_fixup =     rndis_rx_fixup,
3587         .tx_fixup =     rndis_tx_fixup,
3588         .reset =        rndis_wlan_reset,
3589         .stop =         rndis_wlan_stop,
3590         .early_init =   bcm4320b_early_init,
3591         .indication =   rndis_wlan_indication,
3592 };
3593
3594 static const struct driver_info bcm4320a_info = {
3595         .description =  "Wireless RNDIS device, BCM4320a based",
3596         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3597                                 FLAG_AVOID_UNLINK_URBS,
3598         .bind =         rndis_wlan_bind,
3599         .unbind =       rndis_wlan_unbind,
3600         .status =       rndis_status,
3601         .rx_fixup =     rndis_rx_fixup,
3602         .tx_fixup =     rndis_tx_fixup,
3603         .reset =        rndis_wlan_reset,
3604         .stop =         rndis_wlan_stop,
3605         .early_init =   bcm4320a_early_init,
3606         .indication =   rndis_wlan_indication,
3607 };
3608
3609 static const struct driver_info rndis_wlan_info = {
3610         .description =  "Wireless RNDIS device",
3611         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3612                                 FLAG_AVOID_UNLINK_URBS,
3613         .bind =         rndis_wlan_bind,
3614         .unbind =       rndis_wlan_unbind,
3615         .status =       rndis_status,
3616         .rx_fixup =     rndis_rx_fixup,
3617         .tx_fixup =     rndis_tx_fixup,
3618         .reset =        rndis_wlan_reset,
3619         .stop =         rndis_wlan_stop,
3620         .early_init =   unknown_early_init,
3621         .indication =   rndis_wlan_indication,
3622 };
3623
3624 /*-------------------------------------------------------------------------*/
3625
3626 static const struct usb_device_id products [] = {
3627 #define RNDIS_MASTER_INTERFACE \
3628         .bInterfaceClass        = USB_CLASS_COMM, \
3629         .bInterfaceSubClass     = 2 /* ACM */, \
3630         .bInterfaceProtocol     = 0x0ff
3631
3632 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3633  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3634  */
3635 {
3636         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3637                           | USB_DEVICE_ID_MATCH_DEVICE,
3638         .idVendor               = 0x0411,
3639         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3640         RNDIS_MASTER_INTERFACE,
3641         .driver_info            = (unsigned long) &bcm4320b_info,
3642 }, {
3643         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3644                           | USB_DEVICE_ID_MATCH_DEVICE,
3645         .idVendor               = 0x0baf,
3646         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3647         RNDIS_MASTER_INTERFACE,
3648         .driver_info            = (unsigned long) &bcm4320b_info,
3649 }, {
3650         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3651                           | USB_DEVICE_ID_MATCH_DEVICE,
3652         .idVendor               = 0x050d,
3653         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3654         RNDIS_MASTER_INTERFACE,
3655         .driver_info            = (unsigned long) &bcm4320b_info,
3656 }, {
3657         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3658                           | USB_DEVICE_ID_MATCH_DEVICE,
3659         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3660         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3661         RNDIS_MASTER_INTERFACE,
3662         .driver_info            = (unsigned long) &bcm4320b_info,
3663 }, {
3664         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3665                           | USB_DEVICE_ID_MATCH_DEVICE,
3666         .idVendor               = 0x13b1,
3667         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3668         RNDIS_MASTER_INTERFACE,
3669         .driver_info            = (unsigned long) &bcm4320b_info,
3670 }, {
3671         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3672                           | USB_DEVICE_ID_MATCH_DEVICE,
3673         .idVendor               = 0x13b1,
3674         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3675         RNDIS_MASTER_INTERFACE,
3676         .driver_info            = (unsigned long) &bcm4320b_info,
3677 }, {
3678         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3679                           | USB_DEVICE_ID_MATCH_DEVICE,
3680         .idVendor               = 0x0b05,
3681         .idProduct              = 0x1717,       /* Asus WL169gE */
3682         RNDIS_MASTER_INTERFACE,
3683         .driver_info            = (unsigned long) &bcm4320b_info,
3684 }, {
3685         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3686                           | USB_DEVICE_ID_MATCH_DEVICE,
3687         .idVendor               = 0x0a5c,
3688         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3689         RNDIS_MASTER_INTERFACE,
3690         .driver_info            = (unsigned long) &bcm4320b_info,
3691 }, {
3692         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3693                           | USB_DEVICE_ID_MATCH_DEVICE,
3694         .idVendor               = 0x1690,
3695         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3696         RNDIS_MASTER_INTERFACE,
3697         .driver_info            = (unsigned long) &bcm4320b_info,
3698 },
3699 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3700  * parameters available, hardware probably contain older firmware version with
3701  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3702  */
3703 {
3704         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3705                           | USB_DEVICE_ID_MATCH_DEVICE,
3706         .idVendor               = 0x13b1,
3707         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3708         RNDIS_MASTER_INTERFACE,
3709         .driver_info            = (unsigned long) &bcm4320a_info,
3710 }, {
3711         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3712                           | USB_DEVICE_ID_MATCH_DEVICE,
3713         .idVendor               = 0x0baf,
3714         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3715         RNDIS_MASTER_INTERFACE,
3716         .driver_info            = (unsigned long) &bcm4320a_info,
3717 }, {
3718         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3719                           | USB_DEVICE_ID_MATCH_DEVICE,
3720         .idVendor               = 0x0411,
3721         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3722         RNDIS_MASTER_INTERFACE,
3723         .driver_info            = (unsigned long) &bcm4320a_info,
3724 },
3725 /* Generic Wireless RNDIS devices that we don't have exact
3726  * idVendor/idProduct/chip yet.
3727  */
3728 {
3729         /* RNDIS is MSFT's un-official variant of CDC ACM */
3730         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3731         .driver_info = (unsigned long) &rndis_wlan_info,
3732 }, {
3733         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3734         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3735         .driver_info = (unsigned long) &rndis_wlan_info,
3736 },
3737         { },            // END
3738 };
3739 MODULE_DEVICE_TABLE(usb, products);
3740
3741 static struct usb_driver rndis_wlan_driver = {
3742         .name =         "rndis_wlan",
3743         .id_table =     products,
3744         .probe =        usbnet_probe,
3745         .disconnect =   usbnet_disconnect,
3746         .suspend =      usbnet_suspend,
3747         .resume =       usbnet_resume,
3748         .disable_hub_initiated_lpm = 1,
3749 };
3750
3751 module_usb_driver(rndis_wlan_driver);
3752
3753 MODULE_AUTHOR("Bjorge Dijkstra");
3754 MODULE_AUTHOR("Jussi Kivilinna");
3755 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3756 MODULE_LICENSE("GPL");
3757