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, buflen;
 698         int 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, "%s(%s): received invalid "
 734                                 "data offset: %d > %d\n", __func__,
 735                                 oid_to_string(oid), respoffs, buflen);
 736
 737                         ret = -EINVAL;
 738                         goto exit_unlock;
 739                 }
 740
 741                 if ((resplen + respoffs) > buflen) {
 742                         /* Device would have returned more data if buffer would
 743                          * have been big enough. Copy just the bits that we got.
 744                          */
 745                         copylen = buflen - respoffs;
 746                 } else {
 747                         copylen = resplen;
 748                 }
 749
 750                 if (copylen > *len)
 751                         copylen = *len;
 752
 753                 memcpy(data, u.buf + respoffs, copylen);
 754
 755                 *len = resplen;
 756
 757                 ret = rndis_error_status(u.get_c->status);
 758                 if (ret < 0)
 759                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 760                                    __func__, oid_to_string(oid),
 761                                    le32_to_cpu(u.get_c->status), ret);
 762         }
 763
 764 exit_unlock:
 765         mutex_unlock(&priv->command_lock);
 766
 767         if (u.buf != priv->command_buffer)
 768                 kfree(u.buf);
 769         return ret;
 770 }
 771
 772 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 773                          int len)
 774 {
 775         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 776         union {
 777                 void                    *buf;
 778                 struct rndis_msg_hdr    *header;
 779                 struct rndis_set        *set;
 780                 struct rndis_set_c      *set_c;
 781         } u;
 782         int ret, buflen;
 783
 784         buflen = len + sizeof(*u.set);
 785         if (buflen < CONTROL_BUFFER_SIZE)
 786                 buflen = CONTROL_BUFFER_SIZE;
 787
 788         if (buflen > COMMAND_BUFFER_SIZE) {
 789                 u.buf = kmalloc(buflen, GFP_KERNEL);
 790                 if (!u.buf)
 791                         return -ENOMEM;
 792         } else {
 793                 u.buf = priv->command_buffer;
 794         }
 795
 796         mutex_lock(&priv->command_lock);
 797
 798         memset(u.set, 0, sizeof *u.set);
 799         u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 800         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 801         u.set->oid = cpu_to_le32(oid);
 802         u.set->len = cpu_to_le32(len);
 803         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 804         u.set->handle = cpu_to_le32(0);
 805         memcpy(u.buf + sizeof(*u.set), data, len);
 806
 807         priv->current_command_oid = oid;
 808         ret = rndis_command(dev, u.header, buflen);
 809         priv->current_command_oid = 0;
 810         if (ret < 0)
 811                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 812                            __func__, oid_to_string(oid), ret,
 813                            le32_to_cpu(u.set_c->status));
 814
 815         if (ret == 0) {
 816                 ret = rndis_error_status(u.set_c->status);
 817
 818                 if (ret < 0)
 819                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 820                                    __func__, oid_to_string(oid),
 821                                    le32_to_cpu(u.set_c->status), ret);
 822         }
 823
 824         mutex_unlock(&priv->command_lock);
 825
 826         if (u.buf != priv->command_buffer)
 827                 kfree(u.buf);
 828         return ret;
 829 }
 830
 831 static int rndis_reset(struct usbnet *usbdev)
 832 {
 833         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 834         struct rndis_reset *reset;
 835         int ret;
 836
 837         mutex_lock(&priv->command_lock);
 838
 839         reset = (void *)priv->command_buffer;
 840         memset(reset, 0, sizeof(*reset));
 841         reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 842         reset->msg_len = cpu_to_le32(sizeof(*reset));
 843         priv->current_command_oid = 0;
 844         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 845
 846         mutex_unlock(&priv->command_lock);
 847
 848         if (ret < 0)
 849                 return ret;
 850         return 0;
 851 }
 852
 853 /*
 854  * Specs say that we can only set config parameters only soon after device
 855  * initialization.
 856  *   value_type: 0 = u32, 2 = unicode string
 857  */
 858 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 859                                                 int value_type, void *value)
 860 {
 861         struct ndis_config_param *infobuf;
 862         int value_len, info_len, param_len, ret, i;
 863         __le16 *unibuf;
 864         __le32 *dst_value;
 865
 866         if (value_type == 0)
 867                 value_len = sizeof(__le32);
 868         else if (value_type == 2)
 869                 value_len = strlen(value) * sizeof(__le16);
 870         else
 871                 return -EINVAL;
 872
 873         param_len = strlen(param) * sizeof(__le16);
 874         info_len = sizeof(*infobuf) + param_len + value_len;
 875
 876 #ifdef DEBUG
 877         info_len += 12;
 878 #endif
 879         infobuf = kmalloc(info_len, GFP_KERNEL);
 880         if (!infobuf)
 881                 return -ENOMEM;
 882
 883 #ifdef DEBUG
 884         info_len -= 12;
 885         /* extra 12 bytes are for padding (debug output) */
 886         memset(infobuf, 0xCC, info_len + 12);
 887 #endif
 888
 889         if (value_type == 2)
 890                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 891                            param, (u8 *)value);
 892         else
 893                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 894                            param, *(u32 *)value);
 895
 896         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 897         infobuf->name_length = cpu_to_le32(param_len);
 898         infobuf->type = cpu_to_le32(value_type);
 899         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 900         infobuf->value_length = cpu_to_le32(value_len);
 901
 902         /* simple string to unicode string conversion */
 903         unibuf = (void *)infobuf + sizeof(*infobuf);
 904         for (i = 0; i < param_len / sizeof(__le16); i++)
 905                 unibuf[i] = cpu_to_le16(param[i]);
 906
 907         if (value_type == 2) {
 908                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 909                 for (i = 0; i < value_len / sizeof(__le16); i++)
 910                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 911         } else {
 912                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 913                 *dst_value = cpu_to_le32(*(u32 *)value);
 914         }
 915
 916 #ifdef DEBUG
 917         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 918         for (i = 0; i < info_len; i += 12) {
 919                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 920                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 921                            cpu_to_be32(tmp[0]),
 922                            cpu_to_be32(tmp[1]),
 923                            cpu_to_be32(tmp[2]));
 924         }
 925 #endif
 926
 927         ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 928                                                         infobuf, info_len);
 929         if (ret != 0)
 930                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 931                            ret);
 932
 933         kfree(infobuf);
 934         return ret;
 935 }
 936
 937 static int rndis_set_config_parameter_str(struct usbnet *dev,
 938                                                 char *param, char *value)
 939 {
 940         return rndis_set_config_parameter(dev, param, 2, value);
 941 }
 942
 943 /*
 944  * data conversion functions
 945  */
 946 static int level_to_qual(int level)
 947 {
 948         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 949         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 950 }
 951
 952 /*
 953  * common functions
 954  */
 955 static int set_infra_mode(struct usbnet *usbdev, int mode);
 956 static void restore_keys(struct usbnet *usbdev);
 957 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 958                                         bool *matched);
 959
 960 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 961 {
 962         __le32 tmp;
 963
 964         /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 965         tmp = cpu_to_le32(1);
 966         return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 967                                                         sizeof(tmp));
 968 }
 969
 970 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 971 {
 972         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 973         int ret;
 974
 975         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 976                             ssid, sizeof(*ssid));
 977         if (ret < 0) {
 978                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 979                 return ret;
 980         }
 981         if (ret == 0) {
 982                 priv->radio_on = true;
 983                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
 984         }
 985
 986         return ret;
 987 }
 988
 989 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
 990 {
 991         int ret;
 992
 993         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
 994                             bssid, ETH_ALEN);
 995         if (ret < 0) {
 996                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
 997                             bssid, ret);
 998                 return ret;
 999         }
1000
1001         return ret;
1002 }
1003
1004 static int clear_bssid(struct usbnet *usbdev)
1005 {
1006         static const u8 broadcast_mac[ETH_ALEN] = {
1007                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1008         };
1009
1010         return set_bssid(usbdev, broadcast_mac);
1011 }
1012
1013 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1014 {
1015         int ret, len;
1016
1017         len = ETH_ALEN;
1018         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1019                               bssid, &len);
1020
1021         if (ret != 0)
1022                 eth_zero_addr(bssid);
1023
1024         return ret;
1025 }
1026
1027 static int get_association_info(struct usbnet *usbdev,
1028                         struct ndis_80211_assoc_info *info, int len)
1029 {
1030         return rndis_query_oid(usbdev,
1031                         RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1032                         info, &len);
1033 }
1034
1035 static bool is_associated(struct usbnet *usbdev)
1036 {
1037         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1038         u8 bssid[ETH_ALEN];
1039         int ret;
1040
1041         if (!priv->radio_on)
1042                 return false;
1043
1044         ret = get_bssid(usbdev, bssid);
1045
1046         return (ret == 0 && !is_zero_ether_addr(bssid));
1047 }
1048
1049 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1050 {
1051         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1052         struct ndis_80211_ssid ssid;
1053         int i, ret = 0;
1054
1055         if (priv->radio_on) {
1056                 ret = rndis_set_oid(usbdev,
1057                                 RNDIS_OID_802_11_DISASSOCIATE,
1058                                 NULL, 0);
1059                 if (ret == 0) {
1060                         priv->radio_on = false;
1061                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1062                                    __func__);
1063
1064                         if (reset_ssid)
1065                                 msleep(100);
1066                 }
1067         }
1068
1069         /* disassociate causes radio to be turned off; if reset_ssid
1070          * is given, set random ssid to enable radio */
1071         if (reset_ssid) {
1072                 /* Set device to infrastructure mode so we don't get ad-hoc
1073                  * 'media connect' indications with the random ssid.
1074                  */
1075                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1076
1077                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1078                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1079                 ssid.essid[0] = 0x1;
1080                 ssid.essid[1] = 0xff;
1081                 for (i = 2; i < sizeof(ssid.essid); i++)
1082                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1083                 ret = set_essid(usbdev, &ssid);
1084         }
1085         return ret;
1086 }
1087
1088 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1089                                 enum nl80211_auth_type auth_type, int keymgmt)
1090 {
1091         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1092         __le32 tmp;
1093         int auth_mode, ret;
1094
1095         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1096                    __func__, wpa_version, auth_type, keymgmt);
1097
1098         if (wpa_version & NL80211_WPA_VERSION_2) {
1099                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1100                         auth_mode = NDIS_80211_AUTH_WPA2;
1101                 else
1102                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1103         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1104                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1105                         auth_mode = NDIS_80211_AUTH_WPA;
1106                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1107                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1108                 else
1109                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1110         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1111                 auth_mode = NDIS_80211_AUTH_SHARED;
1112         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1113                 auth_mode = NDIS_80211_AUTH_OPEN;
1114         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1115                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1116         else
1117                 return -ENOTSUPP;
1118
1119         tmp = cpu_to_le32(auth_mode);
1120         ret = rndis_set_oid(usbdev,
1121                             RNDIS_OID_802_11_AUTHENTICATION_MODE,
1122                             &tmp, sizeof(tmp));
1123         if (ret != 0) {
1124                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1125                             ret);
1126                 return ret;
1127         }
1128
1129         priv->wpa_version = wpa_version;
1130
1131         return 0;
1132 }
1133
1134 static int set_priv_filter(struct usbnet *usbdev)
1135 {
1136         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1137         __le32 tmp;
1138
1139         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1140                    __func__, priv->wpa_version);
1141
1142         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1143             priv->wpa_version & NL80211_WPA_VERSION_1)
1144                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1145         else
1146                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1147
1148         return rndis_set_oid(usbdev,
1149                              RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1150                              sizeof(tmp));
1151 }
1152
1153 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1154 {
1155         __le32 tmp;
1156         int encr_mode, ret;
1157
1158         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1159                    __func__, pairwise, groupwise);
1160
1161         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1162                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1163         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1164                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1165         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1166                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1167         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1168                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1169         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1170                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1171         else
1172                 encr_mode = NDIS_80211_ENCR_DISABLED;
1173
1174         tmp = cpu_to_le32(encr_mode);
1175         ret = rndis_set_oid(usbdev,
1176                         RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1177                         sizeof(tmp));
1178         if (ret != 0) {
1179                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1180                             ret);
1181                 return ret;
1182         }
1183
1184         return 0;
1185 }
1186
1187 static int set_infra_mode(struct usbnet *usbdev, int mode)
1188 {
1189         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1190         __le32 tmp;
1191         int ret;
1192
1193         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1194                    __func__, priv->infra_mode);
1195
1196         tmp = cpu_to_le32(mode);
1197         ret = rndis_set_oid(usbdev,
1198                             RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1199                             &tmp, sizeof(tmp));
1200         if (ret != 0) {
1201                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1202                             ret);
1203                 return ret;
1204         }
1205
1206         /* NDIS drivers clear keys when infrastructure mode is
1207          * changed. But Linux tools assume otherwise. So set the
1208          * keys */
1209         restore_keys(usbdev);
1210
1211         priv->infra_mode = mode;
1212         return 0;
1213 }
1214
1215 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1216 {
1217         __le32 tmp;
1218
1219         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1220
1221         if (rts_threshold == -1 || rts_threshold > 2347)
1222                 rts_threshold = 2347;
1223
1224         tmp = cpu_to_le32(rts_threshold);
1225         return rndis_set_oid(usbdev,
1226                              RNDIS_OID_802_11_RTS_THRESHOLD,
1227                              &tmp, sizeof(tmp));
1228 }
1229
1230 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1231 {
1232         __le32 tmp;
1233
1234         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1235
1236         if (frag_threshold < 256 || frag_threshold > 2346)
1237                 frag_threshold = 2346;
1238
1239         tmp = cpu_to_le32(frag_threshold);
1240         return rndis_set_oid(usbdev,
1241                         RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1242                         &tmp, sizeof(tmp));
1243 }
1244
1245 static void set_default_iw_params(struct usbnet *usbdev)
1246 {
1247         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1248         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1249                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1250         set_priv_filter(usbdev);
1251         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1252 }
1253
1254 static int deauthenticate(struct usbnet *usbdev)
1255 {
1256         int ret;
1257
1258         ret = disassociate(usbdev, true);
1259         set_default_iw_params(usbdev);
1260         return ret;
1261 }
1262
1263 static int set_channel(struct usbnet *usbdev, int channel)
1264 {
1265         struct ndis_80211_conf config;
1266         unsigned int dsconfig;
1267         int len, ret;
1268
1269         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1270
1271         /* this OID is valid only when not associated */
1272         if (is_associated(usbdev))
1273                 return 0;
1274
1275         dsconfig = 1000 *
1276                 ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1277
1278         len = sizeof(config);
1279         ret = rndis_query_oid(usbdev,
1280                         RNDIS_OID_802_11_CONFIGURATION,
1281                         &config, &len);
1282         if (ret < 0) {
1283                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1284                            __func__);
1285                 return ret;
1286         }
1287
1288         config.ds_config = cpu_to_le32(dsconfig);
1289         ret = rndis_set_oid(usbdev,
1290                         RNDIS_OID_802_11_CONFIGURATION,
1291                         &config, sizeof(config));
1292
1293         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1294
1295         return ret;
1296 }
1297
1298 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1299                                                      u32 *beacon_period)
1300 {
1301         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1302         struct ieee80211_channel *channel;
1303         struct ndis_80211_conf config;
1304         int len, ret;
1305
1306         /* Get channel and beacon interval */
1307         len = sizeof(config);
1308         ret = rndis_query_oid(usbdev,
1309                         RNDIS_OID_802_11_CONFIGURATION,
1310                         &config, &len);
1311         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1312                                 __func__, ret);
1313         if (ret < 0)
1314                 return NULL;
1315
1316         channel = ieee80211_get_channel(priv->wdev.wiphy,
1317                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1318         if (!channel)
1319                 return NULL;
1320
1321         if (beacon_period)
1322                 *beacon_period = le32_to_cpu(config.beacon_period);
1323         return channel;
1324 }
1325
1326 /* index must be 0 - N, as per NDIS  */
1327 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1328                                                                 u8 index)
1329 {
1330         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1331         struct ndis_80211_wep_key ndis_key;
1332         u32 cipher;
1333         int ret;
1334
1335         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1336                    __func__, index, key_len);
1337
1338         if (index >= RNDIS_WLAN_NUM_KEYS)
1339                 return -EINVAL;
1340
1341         if (key_len == 5)
1342                 cipher = WLAN_CIPHER_SUITE_WEP40;
1343         else if (key_len == 13)
1344                 cipher = WLAN_CIPHER_SUITE_WEP104;
1345         else
1346                 return -EINVAL;
1347
1348         memset(&ndis_key, 0, sizeof(ndis_key));
1349
1350         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1351         ndis_key.length = cpu_to_le32(key_len);
1352         ndis_key.index = cpu_to_le32(index);
1353         memcpy(&ndis_key.material, key, key_len);
1354
1355         if (index == priv->encr_tx_key_index) {
1356                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1357                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1358                                                         RNDIS_WLAN_ALG_NONE);
1359                 if (ret)
1360                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1361                                     ret);
1362         }
1363
1364         ret = rndis_set_oid(usbdev,
1365                         RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1366                         sizeof(ndis_key));
1367         if (ret != 0) {
1368                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1369                             index + 1, ret);
1370                 return ret;
1371         }
1372
1373         priv->encr_keys[index].len = key_len;
1374         priv->encr_keys[index].cipher = cipher;
1375         memcpy(&priv->encr_keys[index].material, key, key_len);
1376         eth_broadcast_addr(priv->encr_keys[index].bssid);
1377
1378         return 0;
1379 }
1380
1381 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1382                         u8 index, const u8 *addr, const u8 *rx_seq,
1383                         int seq_len, u32 cipher, __le32 flags)
1384 {
1385         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1386         struct ndis_80211_key ndis_key;
1387         bool is_addr_ok;
1388         int ret;
1389
1390         if (index >= RNDIS_WLAN_NUM_KEYS) {
1391                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1392                            __func__, index);
1393                 return -EINVAL;
1394         }
1395         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1396                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1397                            __func__, key_len);
1398                 return -EINVAL;
1399         }
1400         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1401                 if (!rx_seq || seq_len <= 0) {
1402                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1403                                    __func__);
1404                         return -EINVAL;
1405                 }
1406                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1407                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1408                         return -EINVAL;
1409                 }
1410         }
1411
1412         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1413                                         !is_broadcast_ether_addr(addr);
1414         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1415                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1416                            __func__, addr);
1417                 return -EINVAL;
1418         }
1419
1420         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1421                    __func__, index,
1422                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1423                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1424                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1425
1426         memset(&ndis_key, 0, sizeof(ndis_key));
1427
1428         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1429                                 sizeof(ndis_key.material) + key_len);
1430         ndis_key.length = cpu_to_le32(key_len);
1431         ndis_key.index = cpu_to_le32(index) | flags;
1432
1433         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1434                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1435                  * different order than NDIS spec, so swap the order here. */
1436                 memcpy(ndis_key.material, key, 16);
1437                 memcpy(ndis_key.material + 16, key + 24, 8);
1438                 memcpy(ndis_key.material + 24, key + 16, 8);
1439         } else
1440                 memcpy(ndis_key.material, key, key_len);
1441
1442         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1443                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1444
1445         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1446                 /* pairwise key */
1447                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1448         } else {
1449                 /* group key */
1450                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1451                         eth_broadcast_addr(ndis_key.bssid);
1452                 else
1453                         get_bssid(usbdev, ndis_key.bssid);
1454         }
1455
1456         ret = rndis_set_oid(usbdev,
1457                         RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1458                         le32_to_cpu(ndis_key.size));
1459         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1460                    __func__, ret);
1461         if (ret != 0)
1462                 return ret;
1463
1464         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1465         priv->encr_keys[index].len = key_len;
1466         priv->encr_keys[index].cipher = cipher;
1467         memcpy(&priv->encr_keys[index].material, key, key_len);
1468         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1469                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1470         else
1471                 eth_broadcast_addr(priv->encr_keys[index].bssid);
1472
1473         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1474                 priv->encr_tx_key_index = index;
1475
1476         return 0;
1477 }
1478
1479 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1480 {
1481         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1482         struct rndis_wlan_encr_key key;
1483
1484         if (is_wpa_key(priv, key_idx))
1485                 return 0;
1486
1487         key = priv->encr_keys[key_idx];
1488
1489         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1490
1491         if (key.len == 0)
1492                 return 0;
1493
1494         return add_wep_key(usbdev, key.material, key.len, key_idx);
1495 }
1496
1497 static void restore_keys(struct usbnet *usbdev)
1498 {
1499         int i;
1500
1501         for (i = 0; i < 4; i++)
1502                 restore_key(usbdev, i);
1503 }
1504
1505 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1506 {
1507         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1508 }
1509
1510 /* remove_key is for both wep and wpa */
1511 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1512 {
1513         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1514         struct ndis_80211_remove_key remove_key;
1515         __le32 keyindex;
1516         bool is_wpa;
1517         int ret;
1518
1519         if (index >= RNDIS_WLAN_NUM_KEYS)
1520                 return -ENOENT;
1521
1522         if (priv->encr_keys[index].len == 0)
1523                 return 0;
1524
1525         is_wpa = is_wpa_key(priv, index);
1526
1527         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1528                    __func__, index, is_wpa ? "wpa" : "wep",
1529                    priv->encr_keys[index].len);
1530
1531         clear_key(priv, index);
1532
1533         if (is_wpa) {
1534                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1535                 remove_key.index = cpu_to_le32(index);
1536                 if (bssid) {
1537                         /* pairwise key */
1538                         if (!is_broadcast_ether_addr(bssid))
1539                                 remove_key.index |=
1540                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1541                         memcpy(remove_key.bssid, bssid,
1542                                         sizeof(remove_key.bssid));
1543                 } else
1544                         memset(remove_key.bssid, 0xff,
1545                                                 sizeof(remove_key.bssid));
1546
1547                 ret = rndis_set_oid(usbdev,
1548                                 RNDIS_OID_802_11_REMOVE_KEY,
1549                                 &remove_key, sizeof(remove_key));
1550                 if (ret != 0)
1551                         return ret;
1552         } else {
1553                 keyindex = cpu_to_le32(index);
1554                 ret = rndis_set_oid(usbdev,
1555                                 RNDIS_OID_802_11_REMOVE_WEP,
1556                                 &keyindex, sizeof(keyindex));
1557                 if (ret != 0) {
1558                         netdev_warn(usbdev->net,
1559                                     "removing encryption key %d failed (%08X)\n",
1560                                     index, ret);
1561                         return ret;
1562                 }
1563         }
1564
1565         /* if it is transmit key, disable encryption */
1566         if (index == priv->encr_tx_key_index)
1567                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1568
1569         return 0;
1570 }
1571
1572 static void set_multicast_list(struct usbnet *usbdev)
1573 {
1574         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1575         struct netdev_hw_addr *ha;
1576         __le32 filter, basefilter;
1577         int ret;
1578         char *mc_addrs = NULL;
1579         int mc_count;
1580
1581         basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1582                                           RNDIS_PACKET_TYPE_BROADCAST);
1583
1584         if (usbdev->net->flags & IFF_PROMISC) {
1585                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1586                                       RNDIS_PACKET_TYPE_ALL_LOCAL);
1587         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1588                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1589         }
1590
1591         if (filter != basefilter)
1592                 goto set_filter;
1593
1594         /*
1595          * mc_list should be accessed holding the lock, so copy addresses to
1596          * local buffer first.
1597          */
1598         netif_addr_lock_bh(usbdev->net);
1599         mc_count = netdev_mc_count(usbdev->net);
1600         if (mc_count > priv->multicast_size) {
1601                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1602         } else if (mc_count) {
1603                 int i = 0;
1604
1605                 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1606                 if (!mc_addrs) {
1607                         netif_addr_unlock_bh(usbdev->net);
1608                         return;
1609                 }
1610
1611                 netdev_for_each_mc_addr(ha, usbdev->net)
1612                         memcpy(mc_addrs + i++ * ETH_ALEN,
1613                                ha->addr, ETH_ALEN);
1614         }
1615         netif_addr_unlock_bh(usbdev->net);
1616
1617         if (filter != basefilter)
1618                 goto set_filter;
1619
1620         if (mc_count) {
1621                 ret = rndis_set_oid(usbdev,
1622                                 RNDIS_OID_802_3_MULTICAST_LIST,
1623                                 mc_addrs, mc_count * ETH_ALEN);
1624                 kfree(mc_addrs);
1625                 if (ret == 0)
1626                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1627                 else
1628                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1629
1630                 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1631                            mc_count, priv->multicast_size, ret);
1632         }
1633
1634 set_filter:
1635         ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1636                                                         sizeof(filter));
1637         if (ret < 0) {
1638                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1639                             le32_to_cpu(filter));
1640         }
1641
1642         netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1643                    le32_to_cpu(filter), ret);
1644 }
1645
1646 #ifdef DEBUG
1647 static void debug_print_pmkids(struct usbnet *usbdev,
1648                                 struct ndis_80211_pmkid *pmkids,
1649                                 const char *func_str)
1650 {
1651         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1652         int i, len, count, max_pmkids, entry_len;
1653
1654         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1655         len = le32_to_cpu(pmkids->length);
1656         count = le32_to_cpu(pmkids->bssid_info_count);
1657
1658         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1659
1660         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1661                                 "%d)\n", func_str, count, len, entry_len);
1662
1663         if (count > max_pmkids)
1664                 count = max_pmkids;
1665
1666         for (i = 0; i < count; i++) {
1667                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1668
1669                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1670                                 "pmkid: %08X:%08X:%08X:%08X\n",
1671                                 func_str, pmkids->bssid_info[i].bssid,
1672                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1673                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1674         }
1675 }
1676 #else
1677 static void debug_print_pmkids(struct usbnet *usbdev,
1678                                 struct ndis_80211_pmkid *pmkids,
1679                                 const char *func_str)
1680 {
1681         return;
1682 }
1683 #endif
1684
1685 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1686 {
1687         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1688         struct ndis_80211_pmkid *pmkids;
1689         int len, ret, max_pmkids;
1690
1691         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1692         len = struct_size(pmkids, bssid_info, max_pmkids);
1693
1694         pmkids = kzalloc(len, GFP_KERNEL);
1695         if (!pmkids)
1696                 return ERR_PTR(-ENOMEM);
1697
1698         pmkids->length = cpu_to_le32(len);
1699         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1700
1701         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1702                         pmkids, &len);
1703         if (ret < 0) {
1704                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1705                                 " -> %d\n", __func__, len, max_pmkids, ret);
1706
1707                 kfree(pmkids);
1708                 return ERR_PTR(ret);
1709         }
1710
1711         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1712                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1713
1714         debug_print_pmkids(usbdev, pmkids, __func__);
1715
1716         return pmkids;
1717 }
1718
1719 static int set_device_pmkids(struct usbnet *usbdev,
1720                                 struct ndis_80211_pmkid *pmkids)
1721 {
1722         int ret, len, num_pmkids;
1723
1724         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1725         len = struct_size(pmkids, bssid_info, num_pmkids);
1726         pmkids->length = cpu_to_le32(len);
1727
1728         debug_print_pmkids(usbdev, pmkids, __func__);
1729
1730         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1731                             le32_to_cpu(pmkids->length));
1732         if (ret < 0) {
1733                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1734                                 "\n", __func__, len, num_pmkids, ret);
1735         }
1736
1737         kfree(pmkids);
1738         return ret;
1739 }
1740
1741 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1742                                                 struct ndis_80211_pmkid *pmkids,
1743                                                 struct cfg80211_pmksa *pmksa,
1744                                                 int max_pmkids)
1745 {
1746         int i, err;
1747         unsigned int count;
1748
1749         count = le32_to_cpu(pmkids->bssid_info_count);
1750
1751         if (count > max_pmkids)
1752                 count = max_pmkids;
1753
1754         for (i = 0; i < count; i++)
1755                 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1756                                      pmksa->bssid))
1757                         break;
1758
1759         /* pmkid not found */
1760         if (i == count) {
1761                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1762                                         __func__, pmksa->bssid);
1763                 err = -ENOENT;
1764                 goto error;
1765         }
1766
1767         for (; i + 1 < count; i++)
1768                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1769
1770         count--;
1771         pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1772         pmkids->bssid_info_count = cpu_to_le32(count);
1773
1774         return pmkids;
1775 error:
1776         kfree(pmkids);
1777         return ERR_PTR(err);
1778 }
1779
1780 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1781                                                 struct ndis_80211_pmkid *pmkids,
1782                                                 struct cfg80211_pmksa *pmksa,
1783                                                 int max_pmkids)
1784 {
1785         struct ndis_80211_pmkid *new_pmkids;
1786         int i, err, newlen;
1787         unsigned int count;
1788
1789         count = le32_to_cpu(pmkids->bssid_info_count);
1790
1791         if (count > max_pmkids)
1792                 count = max_pmkids;
1793
1794         /* update with new pmkid */
1795         for (i = 0; i < count; i++) {
1796                 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1797                                       pmksa->bssid))
1798                         continue;
1799
1800                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1801                                                                 WLAN_PMKID_LEN);
1802
1803                 return pmkids;
1804         }
1805
1806         /* out of space, return error */
1807         if (i == max_pmkids) {
1808                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1809                 err = -ENOSPC;
1810                 goto error;
1811         }
1812
1813         /* add new pmkid */
1814         newlen = struct_size(pmkids, bssid_info, count + 1);
1815
1816         new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1817         if (!new_pmkids) {
1818                 err = -ENOMEM;
1819                 goto error;
1820         }
1821         pmkids = new_pmkids;
1822
1823         pmkids->length = cpu_to_le32(newlen);
1824         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1825
1826         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1827         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1828
1829         return pmkids;
1830 error:
1831         kfree(pmkids);
1832         return ERR_PTR(err);
1833 }
1834
1835 /*
1836  * cfg80211 ops
1837  */
1838 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1839                                         struct net_device *dev,
1840                                         enum nl80211_iftype type,
1841                                         struct vif_params *params)
1842 {
1843         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1844         struct usbnet *usbdev = priv->usbdev;
1845         int mode;
1846
1847         switch (type) {
1848         case NL80211_IFTYPE_ADHOC:
1849                 mode = NDIS_80211_INFRA_ADHOC;
1850                 break;
1851         case NL80211_IFTYPE_STATION:
1852                 mode = NDIS_80211_INFRA_INFRA;
1853                 break;
1854         default:
1855                 return -EINVAL;
1856         }
1857
1858         priv->wdev.iftype = type;
1859
1860         return set_infra_mode(usbdev, mode);
1861 }
1862
1863 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1864 {
1865         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1866         struct usbnet *usbdev = priv->usbdev;
1867         int err;
1868
1869         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1870                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1871                 if (err < 0)
1872                         return err;
1873         }
1874
1875         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1876                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1877                 if (err < 0)
1878                         return err;
1879         }
1880
1881         return 0;
1882 }
1883
1884 static int rndis_set_tx_power(struct wiphy *wiphy,
1885                               struct wireless_dev *wdev,
1886                               enum nl80211_tx_power_setting type,
1887                               int mbm)
1888 {
1889         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1890         struct usbnet *usbdev = priv->usbdev;
1891
1892         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1893                    __func__, type, mbm);
1894
1895         if (mbm < 0 || (mbm % 100))
1896                 return -ENOTSUPP;
1897
1898         /* Device doesn't support changing txpower after initialization, only
1899          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1900          * currently used.
1901          */
1902         if (type == NL80211_TX_POWER_AUTOMATIC ||
1903             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1904                 if (!priv->radio_on)
1905                         disassociate(usbdev, true); /* turn on radio */
1906
1907                 return 0;
1908         }
1909
1910         return -ENOTSUPP;
1911 }
1912
1913 static int rndis_get_tx_power(struct wiphy *wiphy,
1914                               struct wireless_dev *wdev,
1915                               int *dbm)
1916 {
1917         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1918         struct usbnet *usbdev = priv->usbdev;
1919
1920         *dbm = get_bcm4320_power_dbm(priv);
1921
1922         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1923
1924         return 0;
1925 }
1926
1927 #define SCAN_DELAY_JIFFIES (6 * HZ)
1928 static int rndis_scan(struct wiphy *wiphy,
1929                         struct cfg80211_scan_request *request)
1930 {
1931         struct net_device *dev = request->wdev->netdev;
1932         struct usbnet *usbdev = netdev_priv(dev);
1933         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1934         int ret;
1935         int delay = SCAN_DELAY_JIFFIES;
1936
1937         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1938
1939         /* Get current bssid list from device before new scan, as new scan
1940          * clears internal bssid list.
1941          */
1942         rndis_check_bssid_list(usbdev, NULL, NULL);
1943
1944         if (priv->scan_request && priv->scan_request != request)
1945                 return -EBUSY;
1946
1947         priv->scan_request = request;
1948
1949         ret = rndis_start_bssid_list_scan(usbdev);
1950         if (ret == 0) {
1951                 if (priv->device_type == RNDIS_BCM4320A)
1952                         delay = HZ;
1953
1954                 /* Wait before retrieving scan results from device */
1955                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1956         }
1957
1958         return ret;
1959 }
1960
1961 static bool rndis_bss_info_update(struct usbnet *usbdev,
1962                                   struct ndis_80211_bssid_ex *bssid)
1963 {
1964         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1965         struct ieee80211_channel *channel;
1966         struct cfg80211_bss *bss;
1967         s32 signal;
1968         u64 timestamp;
1969         u16 capability;
1970         u16 beacon_interval;
1971         struct ndis_80211_fixed_ies *fixed;
1972         int ie_len, bssid_len;
1973         u8 *ie;
1974
1975         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1976                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1977
1978         /* parse bssid structure */
1979         bssid_len = le32_to_cpu(bssid->length);
1980
1981         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1982                         sizeof(struct ndis_80211_fixed_ies))
1983                 return NULL;
1984
1985         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1986
1987         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1988         ie_len = min(bssid_len - (int)sizeof(*bssid),
1989                                         (int)le32_to_cpu(bssid->ie_length));
1990         ie_len -= sizeof(struct ndis_80211_fixed_ies);
1991         if (ie_len < 0)
1992                 return NULL;
1993
1994         /* extract data for cfg80211_inform_bss */
1995         channel = ieee80211_get_channel(priv->wdev.wiphy,
1996                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1997         if (!channel)
1998                 return NULL;
1999
2000         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2001         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2002         capability = le16_to_cpu(fixed->capabilities);
2003         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2004
2005         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2006                                   CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2007                                   timestamp, capability, beacon_interval,
2008                                   ie, ie_len, signal, GFP_KERNEL);
2009         cfg80211_put_bss(priv->wdev.wiphy, bss);
2010
2011         return (bss != NULL);
2012 }
2013
2014 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2015                                         struct ndis_80211_bssid_ex *bssid,
2016                                         int *bssid_len, void *buf, int len)
2017 {
2018         void *buf_end, *bssid_end;
2019
2020         buf_end = (char *)buf + len;
2021         bssid_end = (char *)bssid + *bssid_len;
2022
2023         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2024                 *bssid_len = 0;
2025                 return NULL;
2026         } else {
2027                 bssid = (void *)((char *)bssid + *bssid_len);
2028                 *bssid_len = le32_to_cpu(bssid->length);
2029                 return bssid;
2030         }
2031 }
2032
2033 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2034                                   int bssid_len, void *buf, int len)
2035 {
2036         void *buf_end, *bssid_end;
2037
2038         if (!bssid || bssid_len <= 0 || bssid_len > len)
2039                 return false;
2040
2041         buf_end = (char *)buf + len;
2042         bssid_end = (char *)bssid + bssid_len;
2043
2044         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2045 }
2046
2047 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2048                                         bool *matched)
2049 {
2050         void *buf = NULL;
2051         struct ndis_80211_bssid_list_ex *bssid_list;
2052         struct ndis_80211_bssid_ex *bssid;
2053         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2054
2055         netdev_dbg(usbdev->net, "%s()\n", __func__);
2056
2057         len = CONTROL_BUFFER_SIZE;
2058 resize_buf:
2059         buf = kzalloc(len, GFP_KERNEL);
2060         if (!buf) {
2061                 ret = -ENOMEM;
2062                 goto out;
2063         }
2064
2065         /* BSSID-list might have got bigger last time we checked, keep
2066          * resizing until it won't get any bigger.
2067          */
2068         new_len = len;
2069         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2070                               buf, &new_len);
2071         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2072                 goto out;
2073
2074         if (new_len > len) {
2075                 len = new_len;
2076                 kfree(buf);
2077                 goto resize_buf;
2078         }
2079
2080         len = new_len;
2081
2082         bssid_list = buf;
2083         count = le32_to_cpu(bssid_list->num_items);
2084         real_count = 0;
2085         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2086
2087         bssid_len = 0;
2088         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2089
2090         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2091          * received 'num_items' and walking through full bssid buffer instead.
2092          */
2093         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2094                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2095                     matched) {
2096                         if (ether_addr_equal(bssid->mac, match_bssid))
2097                                 *matched = true;
2098                 }
2099
2100                 real_count++;
2101                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2102         }
2103
2104         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2105                                 " %d\n", __func__, count, real_count);
2106
2107 out:
2108         kfree(buf);
2109         return ret;
2110 }
2111
2112 static void rndis_get_scan_results(struct work_struct *work)
2113 {
2114         struct rndis_wlan_private *priv =
2115                 container_of(work, struct rndis_wlan_private, scan_work.work);
2116         struct usbnet *usbdev = priv->usbdev;
2117         struct cfg80211_scan_info info = {};
2118         int ret;
2119
2120         netdev_dbg(usbdev->net, "get_scan_results\n");
2121
2122         if (!priv->scan_request)
2123                 return;
2124
2125         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2126
2127         info.aborted = ret < 0;
2128         cfg80211_scan_done(priv->scan_request, &info);
2129
2130         priv->scan_request = NULL;
2131 }
2132
2133 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2134                                         struct cfg80211_connect_params *sme)
2135 {
2136         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2137         struct usbnet *usbdev = priv->usbdev;
2138         struct ieee80211_channel *channel = sme->channel;
2139         struct ndis_80211_ssid ssid;
2140         int pairwise = RNDIS_WLAN_ALG_NONE;
2141         int groupwise = RNDIS_WLAN_ALG_NONE;
2142         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2143         int length, i, ret, chan = -1;
2144
2145         if (channel)
2146                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2147
2148         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2149         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2150                 pairwise |=
2151                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2152
2153         if (sme->crypto.n_ciphers_pairwise > 0 &&
2154                         pairwise == RNDIS_WLAN_ALG_NONE) {
2155                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2156                 return -ENOTSUPP;
2157         }
2158
2159         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2160                 keymgmt |=
2161                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2162
2163         if (sme->crypto.n_akm_suites > 0 &&
2164                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2165                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2166                 return -ENOTSUPP;
2167         }
2168
2169         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2170                    sme->ssid, sme->bssid, chan,
2171                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2172                    groupwise, pairwise, keymgmt);
2173
2174         if (is_associated(usbdev))
2175                 disassociate(usbdev, false);
2176
2177         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2178         if (ret < 0) {
2179                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2180                            ret);
2181                 goto err_turn_radio_on;
2182         }
2183
2184         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2185                                                                 keymgmt);
2186         if (ret < 0) {
2187                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2188                            ret);
2189                 goto err_turn_radio_on;
2190         }
2191
2192         set_priv_filter(usbdev);
2193
2194         ret = set_encr_mode(usbdev, pairwise, groupwise);
2195         if (ret < 0) {
2196                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2197                            ret);
2198                 goto err_turn_radio_on;
2199         }
2200
2201         if (channel) {
2202                 ret = set_channel(usbdev, chan);
2203                 if (ret < 0) {
2204                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2205                                    ret);
2206                         goto err_turn_radio_on;
2207                 }
2208         }
2209
2210         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2211                 priv->encr_tx_key_index = sme->key_idx;
2212                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2213                 if (ret < 0) {
2214                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2215                                    ret, sme->key_len, sme->key_idx);
2216                         goto err_turn_radio_on;
2217                 }
2218         }
2219
2220         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2221                                 !is_broadcast_ether_addr(sme->bssid)) {
2222                 ret = set_bssid(usbdev, sme->bssid);
2223                 if (ret < 0) {
2224                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2225                                    ret);
2226                         goto err_turn_radio_on;
2227                 }
2228         } else
2229                 clear_bssid(usbdev);
2230
2231         length = sme->ssid_len;
2232         if (length > NDIS_802_11_LENGTH_SSID)
2233                 length = NDIS_802_11_LENGTH_SSID;
2234
2235         memset(&ssid, 0, sizeof(ssid));
2236         ssid.length = cpu_to_le32(length);
2237         memcpy(ssid.essid, sme->ssid, length);
2238
2239         /* Pause and purge rx queue, so we don't pass packets before
2240          * 'media connect'-indication.
2241          */
2242         usbnet_pause_rx(usbdev);
2243         usbnet_purge_paused_rxq(usbdev);
2244
2245         ret = set_essid(usbdev, &ssid);
2246         if (ret < 0)
2247                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2248         return ret;
2249
2250 err_turn_radio_on:
2251         disassociate(usbdev, true);
2252
2253         return ret;
2254 }
2255
2256 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2257                                                                 u16 reason_code)
2258 {
2259         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2260         struct usbnet *usbdev = priv->usbdev;
2261
2262         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2263
2264         priv->connected = false;
2265         eth_zero_addr(priv->bssid);
2266
2267         return deauthenticate(usbdev);
2268 }
2269
2270 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2271                                         struct cfg80211_ibss_params *params)
2272 {
2273         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2274         struct usbnet *usbdev = priv->usbdev;
2275         struct ieee80211_channel *channel = params->chandef.chan;
2276         struct ndis_80211_ssid ssid;
2277         enum nl80211_auth_type auth_type;
2278         int ret, alg, length, chan = -1;
2279
2280         if (channel)
2281                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2282
2283         /* TODO: How to handle ad-hoc encryption?
2284          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2285          * pre-shared for encryption (open/shared/wpa), is key set before
2286          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2287          */
2288         if (params->privacy) {
2289                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2290                 alg = RNDIS_WLAN_ALG_WEP;
2291         } else {
2292                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2293                 alg = RNDIS_WLAN_ALG_NONE;
2294         }
2295
2296         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2297                    params->ssid, params->bssid, chan, params->privacy);
2298
2299         if (is_associated(usbdev))
2300                 disassociate(usbdev, false);
2301
2302         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2303         if (ret < 0) {
2304                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2305                            ret);
2306                 goto err_turn_radio_on;
2307         }
2308
2309         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2310         if (ret < 0) {
2311                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2312                            ret);
2313                 goto err_turn_radio_on;
2314         }
2315
2316         set_priv_filter(usbdev);
2317
2318         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2319         if (ret < 0) {
2320                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2321                            ret);
2322                 goto err_turn_radio_on;
2323         }
2324
2325         if (channel) {
2326                 ret = set_channel(usbdev, chan);
2327                 if (ret < 0) {
2328                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2329                                    ret);
2330                         goto err_turn_radio_on;
2331                 }
2332         }
2333
2334         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2335                                 !is_broadcast_ether_addr(params->bssid)) {
2336                 ret = set_bssid(usbdev, params->bssid);
2337                 if (ret < 0) {
2338                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2339                                    ret);
2340                         goto err_turn_radio_on;
2341                 }
2342         } else
2343                 clear_bssid(usbdev);
2344
2345         length = params->ssid_len;
2346         if (length > NDIS_802_11_LENGTH_SSID)
2347                 length = NDIS_802_11_LENGTH_SSID;
2348
2349         memset(&ssid, 0, sizeof(ssid));
2350         ssid.length = cpu_to_le32(length);
2351         memcpy(ssid.essid, params->ssid, length);
2352
2353         /* Don't need to pause rx queue for ad-hoc. */
2354         usbnet_purge_paused_rxq(usbdev);
2355         usbnet_resume_rx(usbdev);
2356
2357         ret = set_essid(usbdev, &ssid);
2358         if (ret < 0)
2359                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2360                            ret);
2361         return ret;
2362
2363 err_turn_radio_on:
2364         disassociate(usbdev, true);
2365
2366         return ret;
2367 }
2368
2369 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2370 {
2371         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2372         struct usbnet *usbdev = priv->usbdev;
2373
2374         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2375
2376         priv->connected = false;
2377         eth_zero_addr(priv->bssid);
2378
2379         return deauthenticate(usbdev);
2380 }
2381
2382 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2383                          u8 key_index, bool pairwise, const u8 *mac_addr,
2384                          struct key_params *params)
2385 {
2386         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2387         struct usbnet *usbdev = priv->usbdev;
2388         __le32 flags;
2389
2390         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2391                    __func__, key_index, mac_addr, params->cipher);
2392
2393         switch (params->cipher) {
2394         case WLAN_CIPHER_SUITE_WEP40:
2395         case WLAN_CIPHER_SUITE_WEP104:
2396                 return add_wep_key(usbdev, params->key, params->key_len,
2397                                                                 key_index);
2398         case WLAN_CIPHER_SUITE_TKIP:
2399         case WLAN_CIPHER_SUITE_CCMP:
2400                 flags = 0;
2401
2402                 if (params->seq && params->seq_len > 0)
2403                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2404                 if (mac_addr)
2405                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2406                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2407
2408                 return add_wpa_key(usbdev, params->key, params->key_len,
2409                                 key_index, mac_addr, params->seq,
2410                                 params->seq_len, params->cipher, flags);
2411         default:
2412                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2413                            __func__, params->cipher);
2414                 return -ENOTSUPP;
2415         }
2416 }
2417
2418 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2419                          u8 key_index, bool pairwise, const u8 *mac_addr)
2420 {
2421         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2422         struct usbnet *usbdev = priv->usbdev;
2423
2424         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2425
2426         return remove_key(usbdev, key_index, mac_addr);
2427 }
2428
2429 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2430                                  u8 key_index, bool unicast, bool multicast)
2431 {
2432         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2433         struct usbnet *usbdev = priv->usbdev;
2434         struct rndis_wlan_encr_key key;
2435
2436         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2437
2438         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2439                 return -ENOENT;
2440
2441         priv->encr_tx_key_index = key_index;
2442
2443         if (is_wpa_key(priv, key_index))
2444                 return 0;
2445
2446         key = priv->encr_keys[key_index];
2447
2448         return add_wep_key(usbdev, key.material, key.len, key_index);
2449 }
2450
2451 static void rndis_fill_station_info(struct usbnet *usbdev,
2452                                                 struct station_info *sinfo)
2453 {
2454         __le32 linkspeed, rssi;
2455         int ret, len;
2456
2457         memset(sinfo, 0, sizeof(*sinfo));
2458
2459         len = sizeof(linkspeed);
2460         ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2461         if (ret == 0) {
2462                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2463                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2464         }
2465
2466         len = sizeof(rssi);
2467         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2468                               &rssi, &len);
2469         if (ret == 0) {
2470                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2471                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2472         }
2473 }
2474
2475 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2476                              const u8 *mac, struct station_info *sinfo)
2477 {
2478         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2479         struct usbnet *usbdev = priv->usbdev;
2480
2481         if (!ether_addr_equal(priv->bssid, mac))
2482                 return -ENOENT;
2483
2484         rndis_fill_station_info(usbdev, sinfo);
2485
2486         return 0;
2487 }
2488
2489 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2490                                int idx, u8 *mac, struct station_info *sinfo)
2491 {
2492         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2493         struct usbnet *usbdev = priv->usbdev;
2494
2495         if (idx != 0)
2496                 return -ENOENT;
2497
2498         memcpy(mac, priv->bssid, ETH_ALEN);
2499
2500         rndis_fill_station_info(usbdev, sinfo);
2501
2502         return 0;
2503 }
2504
2505 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2506                                 struct cfg80211_pmksa *pmksa)
2507 {
2508         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2509         struct usbnet *usbdev = priv->usbdev;
2510         struct ndis_80211_pmkid *pmkids;
2511         u32 *tmp = (u32 *)pmksa->pmkid;
2512
2513         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2514                         pmksa->bssid,
2515                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2516                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2517
2518         pmkids = get_device_pmkids(usbdev);
2519         if (IS_ERR(pmkids)) {
2520                 /* couldn't read PMKID cache from device */
2521                 return PTR_ERR(pmkids);
2522         }
2523
2524         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2525         if (IS_ERR(pmkids)) {
2526                 /* not found, list full, etc */
2527                 return PTR_ERR(pmkids);
2528         }
2529
2530         return set_device_pmkids(usbdev, pmkids);
2531 }
2532
2533 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2534                                 struct cfg80211_pmksa *pmksa)
2535 {
2536         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2537         struct usbnet *usbdev = priv->usbdev;
2538         struct ndis_80211_pmkid *pmkids;
2539         u32 *tmp = (u32 *)pmksa->pmkid;
2540
2541         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2542                         pmksa->bssid,
2543                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2544                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2545
2546         pmkids = get_device_pmkids(usbdev);
2547         if (IS_ERR(pmkids)) {
2548                 /* Couldn't read PMKID cache from device */
2549                 return PTR_ERR(pmkids);
2550         }
2551
2552         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2553         if (IS_ERR(pmkids)) {
2554                 /* not found, etc */
2555                 return PTR_ERR(pmkids);
2556         }
2557
2558         return set_device_pmkids(usbdev, pmkids);
2559 }
2560
2561 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2562 {
2563         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2564         struct usbnet *usbdev = priv->usbdev;
2565         struct ndis_80211_pmkid pmkid;
2566
2567         netdev_dbg(usbdev->net, "%s()\n", __func__);
2568
2569         memset(&pmkid, 0, sizeof(pmkid));
2570
2571         pmkid.length = cpu_to_le32(sizeof(pmkid));
2572         pmkid.bssid_info_count = cpu_to_le32(0);
2573
2574         return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2575                              &pmkid, sizeof(pmkid));
2576 }
2577
2578 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2579                                 bool enabled, int timeout)
2580 {
2581         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2582         struct usbnet *usbdev = priv->usbdev;
2583         int power_mode;
2584         __le32 mode;
2585         int ret;
2586
2587         if (priv->device_type != RNDIS_BCM4320B)
2588                 return -ENOTSUPP;
2589
2590         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2591                                 enabled ? "enabled" : "disabled",
2592                                 timeout);
2593
2594         if (enabled)
2595                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2596         else
2597                 power_mode = NDIS_80211_POWER_MODE_CAM;
2598
2599         if (power_mode == priv->power_mode)
2600                 return 0;
2601
2602         priv->power_mode = power_mode;
2603
2604         mode = cpu_to_le32(power_mode);
2605         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2606                             &mode, sizeof(mode));
2607
2608         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2609                                 __func__, ret);
2610
2611         return ret;
2612 }
2613
2614 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2615                                         struct net_device *dev,
2616                                         s32 rssi_thold, u32 rssi_hyst)
2617 {
2618         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2619
2620         priv->cqm_rssi_thold = rssi_thold;
2621         priv->cqm_rssi_hyst = rssi_hyst;
2622         priv->last_cqm_event_rssi = 0;
2623
2624         return 0;
2625 }
2626
2627 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2628                                            struct ndis_80211_assoc_info *info)
2629 {
2630         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2631         struct ieee80211_channel *channel;
2632         struct ndis_80211_ssid ssid;
2633         struct cfg80211_bss *bss;
2634         s32 signal;
2635         u64 timestamp;
2636         u16 capability;
2637         u32 beacon_period = 0;
2638         __le32 rssi;
2639         u8 ie_buf[34];
2640         int len, ret, ie_len;
2641
2642         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2643         len = sizeof(rssi);
2644         rssi = 0;
2645         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2646                               &rssi, &len);
2647         signal = level_to_qual(le32_to_cpu(rssi));
2648
2649         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2650                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2651                    level_to_qual(le32_to_cpu(rssi)));
2652
2653         /* Get AP capabilities */
2654         if (info) {
2655                 capability = le16_to_cpu(info->resp_ie.capa);
2656         } else {
2657                 /* Set atleast ESS/IBSS capability */
2658                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2659                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2660         }
2661
2662         /* Get channel and beacon interval */
2663         channel = get_current_channel(usbdev, &beacon_period);
2664         if (!channel) {
2665                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2666                                         __func__);
2667                 return;
2668         }
2669
2670         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2671         len = sizeof(ssid);
2672         memset(&ssid, 0, sizeof(ssid));
2673         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2674                               &ssid, &len);
2675         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2676                                 "'%.32s'\n", __func__, ret,
2677                                 le32_to_cpu(ssid.length), ssid.essid);
2678
2679         if (le32_to_cpu(ssid.length) > 32)
2680                 ssid.length = cpu_to_le32(32);
2681
2682         ie_buf[0] = WLAN_EID_SSID;
2683         ie_buf[1] = le32_to_cpu(ssid.length);
2684         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2685
2686         ie_len = le32_to_cpu(ssid.length) + 2;
2687
2688         /* no tsf */
2689         timestamp = 0;
2690
2691         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2692                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2693                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2694                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2695                 ssid.essid, signal);
2696
2697         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2698                                   CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2699                                   timestamp, capability, beacon_period,
2700                                   ie_buf, ie_len, signal, GFP_KERNEL);
2701         cfg80211_put_bss(priv->wdev.wiphy, bss);
2702 }
2703
2704 /*
2705  * workers, indication handlers, device poller
2706  */
2707 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2708 {
2709         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2710         struct ndis_80211_assoc_info *info = NULL;
2711         u8 bssid[ETH_ALEN];
2712         unsigned int resp_ie_len, req_ie_len;
2713         unsigned int offset;
2714         u8 *req_ie, *resp_ie;
2715         int ret;
2716         bool roamed = false;
2717         bool match_bss;
2718
2719         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2720                 /* received media connect indication while connected, either
2721                  * device reassociated with same AP or roamed to new. */
2722                 roamed = true;
2723         }
2724
2725         req_ie_len = 0;
2726         resp_ie_len = 0;
2727         req_ie = NULL;
2728         resp_ie = NULL;
2729
2730         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2731                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2732                 if (!info) {
2733                         /* No memory? Try resume work later */
2734                         set_bit(WORK_LINK_UP, &priv->work_pending);
2735                         queue_work(priv->workqueue, &priv->work);
2736                         return;
2737                 }
2738
2739                 /* Get association info IEs from device. */
2740                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2741                 if (!ret) {
2742                         req_ie_len = le32_to_cpu(info->req_ie_length);
2743                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2744                                 req_ie_len = CONTROL_BUFFER_SIZE;
2745                         if (req_ie_len != 0) {
2746                                 offset = le32_to_cpu(info->offset_req_ies);
2747
2748                                 if (offset > CONTROL_BUFFER_SIZE)
2749                                         offset = CONTROL_BUFFER_SIZE;
2750
2751                                 req_ie = (u8 *)info + offset;
2752
2753                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2754                                         req_ie_len =
2755                                                 CONTROL_BUFFER_SIZE - offset;
2756                         }
2757
2758                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2759                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2760                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2761                         if (resp_ie_len != 0) {
2762                                 offset = le32_to_cpu(info->offset_resp_ies);
2763
2764                                 if (offset > CONTROL_BUFFER_SIZE)
2765                                         offset = CONTROL_BUFFER_SIZE;
2766
2767                                 resp_ie = (u8 *)info + offset;
2768
2769                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2770                                         resp_ie_len =
2771                                                 CONTROL_BUFFER_SIZE - offset;
2772                         }
2773                 } else {
2774                         /* Since rndis_wlan_craft_connected_bss() might use info
2775                          * later and expects info to contain valid data if
2776                          * non-null, free info and set NULL here.
2777                          */
2778                         kfree(info);
2779                         info = NULL;
2780                 }
2781         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2782                 return;
2783
2784         ret = get_bssid(usbdev, bssid);
2785         if (ret < 0)
2786                 memset(bssid, 0, sizeof(bssid));
2787
2788         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2789                    bssid, roamed ? " roamed" : "");
2790
2791         /* Internal bss list in device should contain at least the currently
2792          * connected bss and we can get it to cfg80211 with
2793          * rndis_check_bssid_list().
2794          *
2795          * NDIS spec says: "If the device is associated, but the associated
2796          *  BSSID is not in its BSSID scan list, then the driver must add an
2797          *  entry for the BSSID at the end of the data that it returns in
2798          *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2799          *
2800          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2801          */
2802         match_bss = false;
2803         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2804
2805         if (!is_zero_ether_addr(bssid) && !match_bss) {
2806                 /* Couldn't get bss from device, we need to manually craft bss
2807                  * for cfg80211.
2808                  */
2809                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2810         }
2811
2812         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2813                 if (!roamed) {
2814                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2815                                                 req_ie_len, resp_ie,
2816                                                 resp_ie_len, 0, GFP_KERNEL);
2817                 } else {
2818                         struct cfg80211_roam_info roam_info = {
2819                                 .channel = get_current_channel(usbdev, NULL),
2820                                 .bssid = bssid,
2821                                 .req_ie = req_ie,
2822                                 .req_ie_len = req_ie_len,
2823                                 .resp_ie = resp_ie,
2824                                 .resp_ie_len = resp_ie_len,
2825                         };
2826
2827                         cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2828                 }
2829         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2830                 cfg80211_ibss_joined(usbdev->net, bssid,
2831                                      get_current_channel(usbdev, NULL),
2832                                      GFP_KERNEL);
2833
2834         kfree(info);
2835
2836         priv->connected = true;
2837         memcpy(priv->bssid, bssid, ETH_ALEN);
2838
2839         usbnet_resume_rx(usbdev);
2840         netif_carrier_on(usbdev->net);
2841 }
2842
2843 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2844 {
2845         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2846
2847         if (priv->connected) {
2848                 priv->connected = false;
2849                 eth_zero_addr(priv->bssid);
2850
2851                 deauthenticate(usbdev);
2852
2853                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2854         }
2855
2856         netif_carrier_off(usbdev->net);
2857 }
2858
2859 static void rndis_wlan_worker(struct work_struct *work)
2860 {
2861         struct rndis_wlan_private *priv =
2862                 container_of(work, struct rndis_wlan_private, work);
2863         struct usbnet *usbdev = priv->usbdev;
2864
2865         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2866                 rndis_wlan_do_link_up_work(usbdev);
2867
2868         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2869                 rndis_wlan_do_link_down_work(usbdev);
2870
2871         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2872                 set_multicast_list(usbdev);
2873 }
2874
2875 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2876 {
2877         struct usbnet *usbdev = netdev_priv(dev);
2878         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2879
2880         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2881                 return;
2882
2883         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2884         queue_work(priv->workqueue, &priv->work);
2885 }
2886
2887 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2888                                 struct ndis_80211_status_indication *indication,
2889                                 int len)
2890 {
2891         u8 *buf;
2892         const char *type;
2893         int flags, buflen, key_id;
2894         bool pairwise_error, group_error;
2895         struct ndis_80211_auth_request *auth_req;
2896         enum nl80211_key_type key_type;
2897
2898         /* must have at least one array entry */
2899         if (len < offsetof(struct ndis_80211_status_indication, u) +
2900                                 sizeof(struct ndis_80211_auth_request)) {
2901                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2902                             len);
2903                 return;
2904         }
2905
2906         buf = (void *)&indication->u.auth_request[0];
2907         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2908
2909         while (buflen >= sizeof(*auth_req)) {
2910                 auth_req = (void *)buf;
2911                 if (buflen < le32_to_cpu(auth_req->length))
2912                         return;
2913                 type = "unknown";
2914                 flags = le32_to_cpu(auth_req->flags);
2915                 pairwise_error = false;
2916                 group_error = false;
2917
2918                 if (flags & 0x1)
2919                         type = "reauth request";
2920                 if (flags & 0x2)
2921                         type = "key update request";
2922                 if (flags & 0x6) {
2923                         pairwise_error = true;
2924                         type = "pairwise_error";
2925                 }
2926                 if (flags & 0xe) {
2927                         group_error = true;
2928                         type = "group_error";
2929                 }
2930
2931                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2932                             type, le32_to_cpu(auth_req->flags));
2933
2934                 if (pairwise_error) {
2935                         key_type = NL80211_KEYTYPE_PAIRWISE;
2936                         key_id = -1;
2937
2938                         cfg80211_michael_mic_failure(usbdev->net,
2939                                                         auth_req->bssid,
2940                                                         key_type, key_id, NULL,
2941                                                         GFP_KERNEL);
2942                 }
2943
2944                 if (group_error) {
2945                         key_type = NL80211_KEYTYPE_GROUP;
2946                         key_id = -1;
2947
2948                         cfg80211_michael_mic_failure(usbdev->net,
2949                                                         auth_req->bssid,
2950                                                         key_type, key_id, NULL,
2951                                                         GFP_KERNEL);
2952                 }
2953
2954                 buflen -= le32_to_cpu(auth_req->length);
2955                 buf += le32_to_cpu(auth_req->length);
2956         }
2957 }
2958
2959 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2960                                 struct ndis_80211_status_indication *indication,
2961                                 int len)
2962 {
2963         struct ndis_80211_pmkid_cand_list *cand_list;
2964         int list_len, expected_len, i;
2965
2966         if (len < offsetof(struct ndis_80211_status_indication, u) +
2967                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2968                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2969                             len);
2970                 return;
2971         }
2972
2973         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2974                         sizeof(struct ndis_80211_pmkid_candidate);
2975         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2976                         offsetof(struct ndis_80211_status_indication, u);
2977
2978         if (len < expected_len) {
2979                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2980                             len, expected_len);
2981                 return;
2982         }
2983
2984         cand_list = &indication->u.cand_list;
2985
2986         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2987                     le32_to_cpu(cand_list->version),
2988                     le32_to_cpu(cand_list->num_candidates));
2989
2990         if (le32_to_cpu(cand_list->version) != 1)
2991                 return;
2992
2993         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2994                 struct ndis_80211_pmkid_candidate *cand =
2995                                                 &cand_list->candidate_list[i];
2996                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
2997
2998                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
2999                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3000
3001                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3002                                                 preauth, GFP_ATOMIC);
3003         }
3004 }
3005
3006 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3007                         struct rndis_indicate *msg, int buflen)
3008 {
3009         struct ndis_80211_status_indication *indication;
3010         unsigned int len, offset;
3011
3012         offset = offsetof(struct rndis_indicate, status) +
3013                         le32_to_cpu(msg->offset);
3014         len = le32_to_cpu(msg->length);
3015
3016         if (len < 8) {
3017                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3018                             len);
3019                 return;
3020         }
3021
3022         if (len > buflen || offset > buflen || offset + len > buflen) {
3023                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3024                             offset + len, buflen);
3025                 return;
3026         }
3027
3028         indication = (void *)((u8 *)msg + offset);
3029
3030         switch (le32_to_cpu(indication->status_type)) {
3031         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3032                 netdev_info(usbdev->net, "radio state indication: %i\n",
3033                             le32_to_cpu(indication->u.radio_status));
3034                 return;
3035
3036         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3037                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3038                             le32_to_cpu(indication->u.media_stream_mode));
3039                 return;
3040
3041         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3042                 rndis_wlan_auth_indication(usbdev, indication, len);
3043                 return;
3044
3045         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3046                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3047                 return;
3048
3049         default:
3050                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3051                             le32_to_cpu(indication->status_type));
3052         }
3053 }
3054
3055 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3056 {
3057         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3058         struct rndis_indicate *msg = ind;
3059
3060         switch (le32_to_cpu(msg->status)) {
3061         case RNDIS_STATUS_MEDIA_CONNECT:
3062                 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3063                         /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3064                          * "media connect" indications which confuses driver
3065                          * and userspace to think that device is
3066                          * roaming/reassociating when it isn't.
3067                          */
3068                         netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3069                         return;
3070                 }
3071
3072                 usbnet_pause_rx(usbdev);
3073
3074                 netdev_info(usbdev->net, "media connect\n");
3075
3076                 /* queue work to avoid recursive calls into rndis_command */
3077                 set_bit(WORK_LINK_UP, &priv->work_pending);
3078                 queue_work(priv->workqueue, &priv->work);
3079                 break;
3080
3081         case RNDIS_STATUS_MEDIA_DISCONNECT:
3082                 netdev_info(usbdev->net, "media disconnect\n");
3083
3084                 /* queue work to avoid recursive calls into rndis_command */
3085                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3086                 queue_work(priv->workqueue, &priv->work);
3087                 break;
3088
3089         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3090                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3091                 break;
3092
3093         default:
3094                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3095                             le32_to_cpu(msg->status));
3096                 break;
3097         }
3098 }
3099
3100 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3101 {
3102         struct {
3103                 __le32  num_items;
3104                 __le32  items[8];
3105         } networks_supported;
3106         struct ndis_80211_capability caps;
3107         int len, retval, i, n;
3108         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3109
3110         /* determine supported modes */
3111         len = sizeof(networks_supported);
3112         retval = rndis_query_oid(usbdev,
3113                                  RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3114                                  &networks_supported, &len);
3115         if (!retval) {
3116                 n = le32_to_cpu(networks_supported.num_items);
3117                 if (n > 8)
3118                         n = 8;
3119                 for (i = 0; i < n; i++) {
3120                         switch (le32_to_cpu(networks_supported.items[i])) {
3121                         case NDIS_80211_TYPE_FREQ_HOP:
3122                         case NDIS_80211_TYPE_DIRECT_SEQ:
3123                                 priv->caps |= CAP_MODE_80211B;
3124                                 break;
3125                         case NDIS_80211_TYPE_OFDM_A:
3126                                 priv->caps |= CAP_MODE_80211A;
3127                                 break;
3128                         case NDIS_80211_TYPE_OFDM_G:
3129                                 priv->caps |= CAP_MODE_80211G;
3130                                 break;
3131                         }
3132                 }
3133         }
3134
3135         /* get device 802.11 capabilities, number of PMKIDs */
3136         len = sizeof(caps);
3137         retval = rndis_query_oid(usbdev,
3138                                  RNDIS_OID_802_11_CAPABILITY,
3139                                  &caps, &len);
3140         if (!retval) {
3141                 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3142                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3143                                 le32_to_cpu(caps.length),
3144                                 le32_to_cpu(caps.version),
3145                                 le32_to_cpu(caps.num_pmkids),
3146                                 le32_to_cpu(caps.num_auth_encr_pair));
3147                 wiphy->max_num_pmkids = le32_to_cpu(caps.num_pmkids);
3148         } else
3149                 wiphy->max_num_pmkids = 0;
3150
3151         return retval;
3152 }
3153
3154 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3155 {
3156         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3157         enum nl80211_cqm_rssi_threshold_event event;
3158         int thold, hyst, last_event;
3159
3160         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3161                 return;
3162         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3163                 return;
3164
3165         last_event = priv->last_cqm_event_rssi;
3166         thold = priv->cqm_rssi_thold;
3167         hyst = priv->cqm_rssi_hyst;
3168
3169         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3170                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3171         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3172                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3173         else
3174                 return;
3175
3176         priv->last_cqm_event_rssi = rssi;
3177         cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3178 }
3179
3180 #define DEVICE_POLLER_JIFFIES (HZ)
3181 static void rndis_device_poller(struct work_struct *work)
3182 {
3183         struct rndis_wlan_private *priv =
3184                 container_of(work, struct rndis_wlan_private,
3185                                                         dev_poller_work.work);
3186         struct usbnet *usbdev = priv->usbdev;
3187         __le32 rssi, tmp;
3188         int len, ret, j;
3189         int update_jiffies = DEVICE_POLLER_JIFFIES;
3190         void *buf;
3191
3192         /* Only check/do workaround when connected. Calling is_associated()
3193          * also polls device with rndis_command() and catches for media link
3194          * indications.
3195          */
3196         if (!is_associated(usbdev)) {
3197                 /* Workaround bad scanning in BCM4320a devices with active
3198                  * background scanning when not associated.
3199                  */
3200                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3201                     !priv->scan_request) {
3202                         /* Get previous scan results */
3203                         rndis_check_bssid_list(usbdev, NULL, NULL);
3204
3205                         /* Initiate new scan */
3206                         rndis_start_bssid_list_scan(usbdev);
3207                 }
3208
3209                 goto end;
3210         }
3211
3212         len = sizeof(rssi);
3213         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3214                               &rssi, &len);
3215         if (ret == 0) {
3216                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3217                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3218         }
3219
3220         netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3221                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3222
3223         /* Workaround transfer stalls on poor quality links.
3224          * TODO: find right way to fix these stalls (as stalls do not happen
3225          * with ndiswrapper/windows driver). */
3226         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3227                 /* Decrease stats worker interval to catch stalls.
3228                  * faster. Faster than 400-500ms causes packet loss,
3229                  * Slower doesn't catch stalls fast enough.
3230                  */
3231                 j = msecs_to_jiffies(priv->param_workaround_interval);
3232                 if (j > DEVICE_POLLER_JIFFIES)
3233                         j = DEVICE_POLLER_JIFFIES;
3234                 else if (j <= 0)
3235                         j = 1;
3236                 update_jiffies = j;
3237
3238                 /* Send scan OID. Use of both OIDs is required to get device
3239                  * working.
3240                  */
3241                 tmp = cpu_to_le32(1);
3242                 rndis_set_oid(usbdev,
3243                               RNDIS_OID_802_11_BSSID_LIST_SCAN,
3244                               &tmp, sizeof(tmp));
3245
3246                 len = CONTROL_BUFFER_SIZE;
3247                 buf = kmalloc(len, GFP_KERNEL);
3248                 if (!buf)
3249                         goto end;
3250
3251                 rndis_query_oid(usbdev,
3252                                 RNDIS_OID_802_11_BSSID_LIST,
3253                                 buf, &len);
3254                 kfree(buf);
3255         }
3256
3257 end:
3258         if (update_jiffies >= HZ)
3259                 update_jiffies = round_jiffies_relative(update_jiffies);
3260         else {
3261                 j = round_jiffies_relative(update_jiffies);
3262                 if (abs(j - update_jiffies) <= 10)
3263                         update_jiffies = j;
3264         }
3265
3266         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3267                                                                 update_jiffies);
3268 }
3269
3270 /*
3271  * driver/device initialization
3272  */
3273 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3274 {
3275         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3276
3277         priv->device_type = device_type;
3278
3279         priv->param_country[0] = modparam_country[0];
3280         priv->param_country[1] = modparam_country[1];
3281         priv->param_country[2] = 0;
3282         priv->param_frameburst   = modparam_frameburst;
3283         priv->param_afterburner  = modparam_afterburner;
3284         priv->param_power_save   = modparam_power_save;
3285         priv->param_power_output = modparam_power_output;
3286         priv->param_roamtrigger  = modparam_roamtrigger;
3287         priv->param_roamdelta    = modparam_roamdelta;
3288
3289         priv->param_country[0] = toupper(priv->param_country[0]);
3290         priv->param_country[1] = toupper(priv->param_country[1]);
3291         /* doesn't support EU as country code, use FI instead */
3292         if (!strcmp(priv->param_country, "EU"))
3293                 strcpy(priv->param_country, "FI");
3294
3295         if (priv->param_power_save < 0)
3296                 priv->param_power_save = 0;
3297         else if (priv->param_power_save > 2)
3298                 priv->param_power_save = 2;
3299
3300         if (priv->param_power_output < 0)
3301                 priv->param_power_output = 0;
3302         else if (priv->param_power_output > 3)
3303                 priv->param_power_output = 3;
3304
3305         if (priv->param_roamtrigger < -80)
3306                 priv->param_roamtrigger = -80;
3307         else if (priv->param_roamtrigger > -60)
3308                 priv->param_roamtrigger = -60;
3309
3310         if (priv->param_roamdelta < 0)
3311                 priv->param_roamdelta = 0;
3312         else if (priv->param_roamdelta > 2)
3313                 priv->param_roamdelta = 2;
3314
3315         if (modparam_workaround_interval < 0)
3316                 priv->param_workaround_interval = 500;
3317         else
3318                 priv->param_workaround_interval = modparam_workaround_interval;
3319 }
3320
3321 static int unknown_early_init(struct usbnet *usbdev)
3322 {
3323         /* copy module parameters for unknown so that iwconfig reports txpower
3324          * and workaround parameter is copied to private structure correctly.
3325          */
3326         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3327
3328         /* This is unknown device, so do not try set configuration parameters.
3329          */
3330
3331         return 0;
3332 }
3333
3334 static int bcm4320a_early_init(struct usbnet *usbdev)
3335 {
3336         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3337          * and workaround parameter is copied to private structure correctly.
3338          */
3339         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3340
3341         /* bcm4320a doesn't handle configuration parameters well. Try
3342          * set any and you get partially zeroed mac and broken device.
3343          */
3344
3345         return 0;
3346 }
3347
3348 static int bcm4320b_early_init(struct usbnet *usbdev)
3349 {
3350         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3351         char buf[8];
3352
3353         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3354
3355         /* Early initialization settings, setting these won't have effect
3356          * if called after generic_rndis_bind().
3357          */
3358
3359         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3360         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3361                                         priv->param_frameburst ? "1" : "0");
3362         rndis_set_config_parameter_str(usbdev, "Afterburner",
3363                                         priv->param_afterburner ? "1" : "0");
3364         sprintf(buf, "%d", priv->param_power_save);
3365         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3366         sprintf(buf, "%d", priv->param_power_output);
3367         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3368         sprintf(buf, "%d", priv->param_roamtrigger);
3369         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3370         sprintf(buf, "%d", priv->param_roamdelta);
3371         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3372
3373         return 0;
3374 }
3375
3376 /* same as rndis_netdev_ops but with local multicast handler */
3377 static const struct net_device_ops rndis_wlan_netdev_ops = {
3378         .ndo_open               = usbnet_open,
3379         .ndo_stop               = usbnet_stop,
3380         .ndo_start_xmit         = usbnet_start_xmit,
3381         .ndo_tx_timeout         = usbnet_tx_timeout,
3382         .ndo_get_stats64        = dev_get_tstats64,
3383         .ndo_set_mac_address    = eth_mac_addr,
3384         .ndo_validate_addr      = eth_validate_addr,
3385         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3386 };
3387
3388 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3389 {
3390         struct wiphy *wiphy;
3391         struct rndis_wlan_private *priv;
3392         int retval, len;
3393         __le32 tmp;
3394
3395         /* allocate wiphy and rndis private data
3396          * NOTE: We only support a single virtual interface, so wiphy
3397          * and wireless_dev are somewhat synonymous for this device.
3398          */
3399         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3400         if (!wiphy)
3401                 return -ENOMEM;
3402
3403         priv = wiphy_priv(wiphy);
3404         usbdev->net->ieee80211_ptr = &priv->wdev;
3405         priv->wdev.wiphy = wiphy;
3406         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3407
3408         /* These have to be initialized before calling generic_rndis_bind().
3409          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3410          */
3411         usbdev->driver_priv = priv;
3412         priv->usbdev = usbdev;
3413
3414         mutex_init(&priv->command_lock);
3415
3416         /* because rndis_command() sleeps we need to use workqueue */
3417         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3418         if (!priv->workqueue) {
3419                 wiphy_free(wiphy);
3420                 return -ENOMEM;
3421         }
3422         INIT_WORK(&priv->work, rndis_wlan_worker);
3423         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3424         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3425
3426         /* try bind rndis_host */
3427         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3428         if (retval < 0)
3429                 goto fail;
3430
3431         /* generic_rndis_bind set packet filter to multicast_all+
3432          * promisc mode which doesn't work well for our devices (device
3433          * picks up rssi to closest station instead of to access point).
3434          *
3435          * rndis_host wants to avoid all OID as much as possible
3436          * so do promisc/multicast handling in rndis_wlan.
3437          */
3438         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3439
3440         tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3441         retval = rndis_set_oid(usbdev,
3442                                RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3443                                &tmp, sizeof(tmp));
3444
3445         len = sizeof(tmp);
3446         retval = rndis_query_oid(usbdev,
3447                                  RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3448                                  &tmp, &len);
3449         priv->multicast_size = le32_to_cpu(tmp);
3450         if (retval < 0 || priv->multicast_size < 0)
3451                 priv->multicast_size = 0;
3452         if (priv->multicast_size > 0)
3453                 usbdev->net->flags |= IFF_MULTICAST;
3454         else
3455                 usbdev->net->flags &= ~IFF_MULTICAST;
3456
3457         /* fill-out wiphy structure and register w/ cfg80211 */
3458         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3459         wiphy->privid = rndis_wiphy_privid;
3460         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3461                                         | BIT(NL80211_IFTYPE_ADHOC);
3462         wiphy->max_scan_ssids = 1;
3463
3464         /* TODO: fill-out band/encr information based on priv->caps */
3465         rndis_wlan_get_caps(usbdev, wiphy);
3466
3467         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3468         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3469         priv->band.channels = priv->channels;
3470         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3471         priv->band.bitrates = priv->rates;
3472         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3473         wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3474         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3475
3476         memcpy(priv->cipher_suites, rndis_cipher_suites,
3477                                                 sizeof(rndis_cipher_suites));
3478         wiphy->cipher_suites = priv->cipher_suites;
3479         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3480
3481         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3482
3483         if (wiphy_register(wiphy)) {
3484                 retval = -ENODEV;
3485                 goto fail;
3486         }
3487
3488         set_default_iw_params(usbdev);
3489
3490         priv->power_mode = -1;
3491
3492         /* set default rts/frag */
3493         rndis_set_wiphy_params(wiphy,
3494                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3495
3496         /* turn radio off on init */
3497         priv->radio_on = false;
3498         disassociate(usbdev, false);
3499         netif_carrier_off(usbdev->net);
3500
3501         return 0;
3502
3503 fail:
3504         cancel_delayed_work_sync(&priv->dev_poller_work);
3505         cancel_delayed_work_sync(&priv->scan_work);
3506         cancel_work_sync(&priv->work);
3507         flush_workqueue(priv->workqueue);
3508         destroy_workqueue(priv->workqueue);
3509
3510         wiphy_free(wiphy);
3511         return retval;
3512 }
3513
3514 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3515 {
3516         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3517
3518         /* turn radio off */
3519         disassociate(usbdev, false);
3520
3521         cancel_delayed_work_sync(&priv->dev_poller_work);
3522         cancel_delayed_work_sync(&priv->scan_work);
3523         cancel_work_sync(&priv->work);
3524         flush_workqueue(priv->workqueue);
3525         destroy_workqueue(priv->workqueue);
3526
3527         rndis_unbind(usbdev, intf);
3528
3529         wiphy_unregister(priv->wdev.wiphy);
3530         wiphy_free(priv->wdev.wiphy);
3531 }
3532
3533 static int rndis_wlan_reset(struct usbnet *usbdev)
3534 {
3535         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3536         int retval;
3537
3538         netdev_dbg(usbdev->net, "%s()\n", __func__);
3539
3540         retval = rndis_reset(usbdev);
3541         if (retval)
3542                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3543
3544         /* rndis_reset cleared multicast list, so restore here.
3545            (set_multicast_list() also turns on current packet filter) */
3546         set_multicast_list(usbdev);
3547
3548         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3549                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3550
3551         return deauthenticate(usbdev);
3552 }
3553
3554 static int rndis_wlan_stop(struct usbnet *usbdev)
3555 {
3556         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3557         int retval;
3558         __le32 filter;
3559
3560         netdev_dbg(usbdev->net, "%s()\n", __func__);
3561
3562         retval = disassociate(usbdev, false);
3563
3564         priv->work_pending = 0;
3565         cancel_delayed_work_sync(&priv->dev_poller_work);
3566         cancel_delayed_work_sync(&priv->scan_work);
3567         cancel_work_sync(&priv->work);
3568         flush_workqueue(priv->workqueue);
3569
3570         if (priv->scan_request) {
3571                 struct cfg80211_scan_info info = {
3572                         .aborted = true,
3573                 };
3574
3575                 cfg80211_scan_done(priv->scan_request, &info);
3576                 priv->scan_request = NULL;
3577         }
3578
3579         /* Set current packet filter zero to block receiving data packets from
3580            device. */
3581         filter = 0;
3582         rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3583                                                                 sizeof(filter));
3584
3585         return retval;
3586 }
3587
3588 static const struct driver_info bcm4320b_info = {
3589         .description =  "Wireless RNDIS device, BCM4320b based",
3590         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3591                                 FLAG_AVOID_UNLINK_URBS,
3592         .bind =         rndis_wlan_bind,
3593         .unbind =       rndis_wlan_unbind,
3594         .status =       rndis_status,
3595         .rx_fixup =     rndis_rx_fixup,
3596         .tx_fixup =     rndis_tx_fixup,
3597         .reset =        rndis_wlan_reset,
3598         .stop =         rndis_wlan_stop,
3599         .early_init =   bcm4320b_early_init,
3600         .indication =   rndis_wlan_indication,
3601 };
3602
3603 static const struct driver_info bcm4320a_info = {
3604         .description =  "Wireless RNDIS device, BCM4320a based",
3605         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3606                                 FLAG_AVOID_UNLINK_URBS,
3607         .bind =         rndis_wlan_bind,
3608         .unbind =       rndis_wlan_unbind,
3609         .status =       rndis_status,
3610         .rx_fixup =     rndis_rx_fixup,
3611         .tx_fixup =     rndis_tx_fixup,
3612         .reset =        rndis_wlan_reset,
3613         .stop =         rndis_wlan_stop,
3614         .early_init =   bcm4320a_early_init,
3615         .indication =   rndis_wlan_indication,
3616 };
3617
3618 static const struct driver_info rndis_wlan_info = {
3619         .description =  "Wireless RNDIS device",
3620         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3621                                 FLAG_AVOID_UNLINK_URBS,
3622         .bind =         rndis_wlan_bind,
3623         .unbind =       rndis_wlan_unbind,
3624         .status =       rndis_status,
3625         .rx_fixup =     rndis_rx_fixup,
3626         .tx_fixup =     rndis_tx_fixup,
3627         .reset =        rndis_wlan_reset,
3628         .stop =         rndis_wlan_stop,
3629         .early_init =   unknown_early_init,
3630         .indication =   rndis_wlan_indication,
3631 };
3632
3633 /*-------------------------------------------------------------------------*/
3634
3635 static const struct usb_device_id products [] = {
3636 #define RNDIS_MASTER_INTERFACE \
3637         .bInterfaceClass        = USB_CLASS_COMM, \
3638         .bInterfaceSubClass     = 2 /* ACM */, \
3639         .bInterfaceProtocol     = 0x0ff
3640
3641 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3642  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3643  */
3644 {
3645         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3646                           | USB_DEVICE_ID_MATCH_DEVICE,
3647         .idVendor               = 0x0411,
3648         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3649         RNDIS_MASTER_INTERFACE,
3650         .driver_info            = (unsigned long) &bcm4320b_info,
3651 }, {
3652         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3653                           | USB_DEVICE_ID_MATCH_DEVICE,
3654         .idVendor               = 0x0baf,
3655         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3656         RNDIS_MASTER_INTERFACE,
3657         .driver_info            = (unsigned long) &bcm4320b_info,
3658 }, {
3659         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3660                           | USB_DEVICE_ID_MATCH_DEVICE,
3661         .idVendor               = 0x050d,
3662         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3663         RNDIS_MASTER_INTERFACE,
3664         .driver_info            = (unsigned long) &bcm4320b_info,
3665 }, {
3666         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3667                           | USB_DEVICE_ID_MATCH_DEVICE,
3668         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3669         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3670         RNDIS_MASTER_INTERFACE,
3671         .driver_info            = (unsigned long) &bcm4320b_info,
3672 }, {
3673         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3674                           | USB_DEVICE_ID_MATCH_DEVICE,
3675         .idVendor               = 0x13b1,
3676         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3677         RNDIS_MASTER_INTERFACE,
3678         .driver_info            = (unsigned long) &bcm4320b_info,
3679 }, {
3680         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3681                           | USB_DEVICE_ID_MATCH_DEVICE,
3682         .idVendor               = 0x13b1,
3683         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3684         RNDIS_MASTER_INTERFACE,
3685         .driver_info            = (unsigned long) &bcm4320b_info,
3686 }, {
3687         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3688                           | USB_DEVICE_ID_MATCH_DEVICE,
3689         .idVendor               = 0x0b05,
3690         .idProduct              = 0x1717,       /* Asus WL169gE */
3691         RNDIS_MASTER_INTERFACE,
3692         .driver_info            = (unsigned long) &bcm4320b_info,
3693 }, {
3694         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3695                           | USB_DEVICE_ID_MATCH_DEVICE,
3696         .idVendor               = 0x0a5c,
3697         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3698         RNDIS_MASTER_INTERFACE,
3699         .driver_info            = (unsigned long) &bcm4320b_info,
3700 }, {
3701         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3702                           | USB_DEVICE_ID_MATCH_DEVICE,
3703         .idVendor               = 0x1690,
3704         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3705         RNDIS_MASTER_INTERFACE,
3706         .driver_info            = (unsigned long) &bcm4320b_info,
3707 },
3708 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3709  * parameters available, hardware probably contain older firmware version with
3710  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3711  */
3712 {
3713         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3714                           | USB_DEVICE_ID_MATCH_DEVICE,
3715         .idVendor               = 0x13b1,
3716         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3717         RNDIS_MASTER_INTERFACE,
3718         .driver_info            = (unsigned long) &bcm4320a_info,
3719 }, {
3720         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3721                           | USB_DEVICE_ID_MATCH_DEVICE,
3722         .idVendor               = 0x0baf,
3723         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3724         RNDIS_MASTER_INTERFACE,
3725         .driver_info            = (unsigned long) &bcm4320a_info,
3726 }, {
3727         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3728                           | USB_DEVICE_ID_MATCH_DEVICE,
3729         .idVendor               = 0x0411,
3730         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3731         RNDIS_MASTER_INTERFACE,
3732         .driver_info            = (unsigned long) &bcm4320a_info,
3733 },
3734 /* Generic Wireless RNDIS devices that we don't have exact
3735  * idVendor/idProduct/chip yet.
3736  */
3737 {
3738         /* RNDIS is MSFT's un-official variant of CDC ACM */
3739         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3740         .driver_info = (unsigned long) &rndis_wlan_info,
3741 }, {
3742         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3743         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3744         .driver_info = (unsigned long) &rndis_wlan_info,
3745 },
3746         { },            // END
3747 };
3748 MODULE_DEVICE_TABLE(usb, products);
3749
3750 static struct usb_driver rndis_wlan_driver = {
3751         .name =         "rndis_wlan",
3752         .id_table =     products,
3753         .probe =        usbnet_probe,
3754         .disconnect =   usbnet_disconnect,
3755         .suspend =      usbnet_suspend,
3756         .resume =       usbnet_resume,
3757         .disable_hub_initiated_lpm = 1,
3758 };
3759
3760 module_usb_driver(rndis_wlan_driver);
3761
3762 MODULE_AUTHOR("Bjorge Dijkstra");
3763 MODULE_AUTHOR("Jussi Kivilinna");
3764 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3765 MODULE_LICENSE("GPL");
3766