drivers/net/wireless/legacy/rndis_wlan.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Driver for RNDIS based USB wireless devices.
   4  *
   5  * Copyright (C) 2007 by Bjorge Dijkstra <[email protected]>
   6  * Copyright (C) 2008-2009 by Jussi Kivilinna <[email protected]>
   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                 DECLARE_FLEX_ARRAY(struct ndis_80211_auth_request, auth_request);
 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         u8 bssid_data[];
 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                          int link_id,  u8 key_index, bool pairwise,
 493                          const u8 *mac_addr, struct key_params *params);
 494
 495 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 496                          int link_id, u8 key_index, bool pairwise,
 497                          const u8 *mac_addr);
 498
 499 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 500                                  int link_id, u8 key_index, bool unicast,
 501                                  bool multicast);
 502
 503 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 504                              const u8 *mac, struct station_info *sinfo);
 505
 506 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 507                                int idx, u8 *mac, struct station_info *sinfo);
 508
 509 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 510                                 struct cfg80211_pmksa *pmksa);
 511
 512 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 513                                 struct cfg80211_pmksa *pmksa);
 514
 515 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 516
 517 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 518                                 bool enabled, int timeout);
 519
 520 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 521                                         struct net_device *dev,
 522                                         s32 rssi_thold, u32 rssi_hyst);
 523
 524 static const struct cfg80211_ops rndis_config_ops = {
 525         .change_virtual_intf = rndis_change_virtual_intf,
 526         .scan = rndis_scan,
 527         .set_wiphy_params = rndis_set_wiphy_params,
 528         .set_tx_power = rndis_set_tx_power,
 529         .get_tx_power = rndis_get_tx_power,
 530         .connect = rndis_connect,
 531         .disconnect = rndis_disconnect,
 532         .join_ibss = rndis_join_ibss,
 533         .leave_ibss = rndis_leave_ibss,
 534         .add_key = rndis_add_key,
 535         .del_key = rndis_del_key,
 536         .set_default_key = rndis_set_default_key,
 537         .get_station = rndis_get_station,
 538         .dump_station = rndis_dump_station,
 539         .set_pmksa = rndis_set_pmksa,
 540         .del_pmksa = rndis_del_pmksa,
 541         .flush_pmksa = rndis_flush_pmksa,
 542         .set_power_mgmt = rndis_set_power_mgmt,
 543         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 544 };
 545
 546 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 547
 548
 549 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 550 {
 551         return (struct rndis_wlan_private *)dev->driver_priv;
 552 }
 553
 554 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 555 {
 556         switch (priv->param_power_output) {
 557         default:
 558         case 3:
 559                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 560         case 2:
 561                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 562         case 1:
 563                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 564         case 0:
 565                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 566         }
 567 }
 568
 569 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 570 {
 571         int cipher = priv->encr_keys[idx].cipher;
 572
 573         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 574                 cipher == WLAN_CIPHER_SUITE_TKIP);
 575 }
 576
 577 static int rndis_cipher_to_alg(u32 cipher)
 578 {
 579         switch (cipher) {
 580         default:
 581                 return RNDIS_WLAN_ALG_NONE;
 582         case WLAN_CIPHER_SUITE_WEP40:
 583         case WLAN_CIPHER_SUITE_WEP104:
 584                 return RNDIS_WLAN_ALG_WEP;
 585         case WLAN_CIPHER_SUITE_TKIP:
 586                 return RNDIS_WLAN_ALG_TKIP;
 587         case WLAN_CIPHER_SUITE_CCMP:
 588                 return RNDIS_WLAN_ALG_CCMP;
 589         }
 590 }
 591
 592 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 593 {
 594         switch (akm_suite) {
 595         default:
 596                 return RNDIS_WLAN_KEY_MGMT_NONE;
 597         case WLAN_AKM_SUITE_8021X:
 598                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 599         case WLAN_AKM_SUITE_PSK:
 600                 return RNDIS_WLAN_KEY_MGMT_PSK;
 601         }
 602 }
 603
 604 #ifdef DEBUG
 605 static const char *oid_to_string(u32 oid)
 606 {
 607         switch (oid) {
 608 #define OID_STR(oid) case oid: return(#oid)
 609                 /* from rndis_host.h */
 610                 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 611                 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 612                 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 613                 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 614
 615                 /* from rndis_wlan.c */
 616                 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 617                 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 618
 619                 OID_STR(RNDIS_OID_GEN_XMIT_OK);
 620                 OID_STR(RNDIS_OID_GEN_RCV_OK);
 621                 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 622                 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 623                 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 624
 625                 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
 626                 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
 627                 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
 628
 629                 OID_STR(RNDIS_OID_802_11_BSSID);
 630                 OID_STR(RNDIS_OID_802_11_SSID);
 631                 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
 632                 OID_STR(RNDIS_OID_802_11_ADD_WEP);
 633                 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
 634                 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
 635                 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
 636                 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
 637                 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
 638                 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
 639                 OID_STR(RNDIS_OID_802_11_ADD_KEY);
 640                 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
 641                 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
 642                 OID_STR(RNDIS_OID_802_11_CAPABILITY);
 643                 OID_STR(RNDIS_OID_802_11_PMKID);
 644                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
 645                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
 646                 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
 647                 OID_STR(RNDIS_OID_802_11_RSSI);
 648                 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
 649                 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
 650                 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
 651                 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
 652                 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
 653                 OID_STR(RNDIS_OID_802_11_POWER_MODE);
 654                 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
 655 #undef OID_STR
 656         }
 657
 658         return "?";
 659 }
 660 #else
 661 static const char *oid_to_string(u32 oid)
 662 {
 663         return "?";
 664 }
 665 #endif
 666
 667 /* translate error code */
 668 static int rndis_error_status(__le32 rndis_status)
 669 {
 670         int ret = -EINVAL;
 671         switch (le32_to_cpu(rndis_status)) {
 672         case RNDIS_STATUS_SUCCESS:
 673                 ret = 0;
 674                 break;
 675         case RNDIS_STATUS_FAILURE:
 676         case RNDIS_STATUS_INVALID_DATA:
 677                 ret = -EINVAL;
 678                 break;
 679         case RNDIS_STATUS_NOT_SUPPORTED:
 680                 ret = -EOPNOTSUPP;
 681                 break;
 682         case RNDIS_STATUS_ADAPTER_NOT_READY:
 683         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 684                 ret = -EBUSY;
 685                 break;
 686         }
 687         return ret;
 688 }
 689
 690 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 691 {
 692         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 693         union {
 694                 void                    *buf;
 695                 struct rndis_msg_hdr    *header;
 696                 struct rndis_query      *get;
 697                 struct rndis_query_c    *get_c;
 698         } u;
 699         int ret;
 700         size_t buflen, resplen, respoffs, copylen;
 701
 702         buflen = *len + sizeof(*u.get);
 703         if (buflen < CONTROL_BUFFER_SIZE)
 704                 buflen = CONTROL_BUFFER_SIZE;
 705
 706         if (buflen > COMMAND_BUFFER_SIZE) {
 707                 u.buf = kmalloc(buflen, GFP_KERNEL);
 708                 if (!u.buf)
 709                         return -ENOMEM;
 710         } else {
 711                 u.buf = priv->command_buffer;
 712         }
 713
 714         mutex_lock(&priv->command_lock);
 715
 716         memset(u.get, 0, sizeof *u.get);
 717         u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 718         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 719         u.get->oid = cpu_to_le32(oid);
 720
 721         priv->current_command_oid = oid;
 722         ret = rndis_command(dev, u.header, buflen);
 723         priv->current_command_oid = 0;
 724         if (ret < 0)
 725                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 726                            __func__, oid_to_string(oid), ret,
 727                            le32_to_cpu(u.get_c->status));
 728
 729         if (ret == 0) {
 730                 resplen = le32_to_cpu(u.get_c->len);
 731                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 732
 733                 if (respoffs > buflen) {
 734                         /* Device returned data offset outside buffer, error. */
 735                         netdev_dbg(dev->net,
 736                                    "%s(%s): received invalid data offset: %zu > %zu\n",
 737                                    __func__, oid_to_string(oid), respoffs, buflen);
 738
 739                         ret = -EINVAL;
 740                         goto exit_unlock;
 741                 }
 742
 743                 copylen = min(resplen, buflen - respoffs);
 744
 745                 if (copylen > *len)
 746                         copylen = *len;
 747
 748                 memcpy(data, u.buf + respoffs, copylen);
 749
 750                 *len = resplen;
 751
 752                 ret = rndis_error_status(u.get_c->status);
 753                 if (ret < 0)
 754                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 755                                    __func__, oid_to_string(oid),
 756                                    le32_to_cpu(u.get_c->status), ret);
 757         }
 758
 759 exit_unlock:
 760         mutex_unlock(&priv->command_lock);
 761
 762         if (u.buf != priv->command_buffer)
 763                 kfree(u.buf);
 764         return ret;
 765 }
 766
 767 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 768                          int len)
 769 {
 770         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 771         union {
 772                 void                    *buf;
 773                 struct rndis_msg_hdr    *header;
 774                 struct rndis_set        *set;
 775                 struct rndis_set_c      *set_c;
 776         } u;
 777         int ret, buflen;
 778
 779         buflen = len + sizeof(*u.set);
 780         if (buflen < CONTROL_BUFFER_SIZE)
 781                 buflen = CONTROL_BUFFER_SIZE;
 782
 783         if (buflen > COMMAND_BUFFER_SIZE) {
 784                 u.buf = kmalloc(buflen, GFP_KERNEL);
 785                 if (!u.buf)
 786                         return -ENOMEM;
 787         } else {
 788                 u.buf = priv->command_buffer;
 789         }
 790
 791         mutex_lock(&priv->command_lock);
 792
 793         memset(u.set, 0, sizeof *u.set);
 794         u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 795         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 796         u.set->oid = cpu_to_le32(oid);
 797         u.set->len = cpu_to_le32(len);
 798         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 799         u.set->handle = cpu_to_le32(0);
 800         memcpy(u.buf + sizeof(*u.set), data, len);
 801
 802         priv->current_command_oid = oid;
 803         ret = rndis_command(dev, u.header, buflen);
 804         priv->current_command_oid = 0;
 805         if (ret < 0)
 806                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 807                            __func__, oid_to_string(oid), ret,
 808                            le32_to_cpu(u.set_c->status));
 809
 810         if (ret == 0) {
 811                 ret = rndis_error_status(u.set_c->status);
 812
 813                 if (ret < 0)
 814                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 815                                    __func__, oid_to_string(oid),
 816                                    le32_to_cpu(u.set_c->status), ret);
 817         }
 818
 819         mutex_unlock(&priv->command_lock);
 820
 821         if (u.buf != priv->command_buffer)
 822                 kfree(u.buf);
 823         return ret;
 824 }
 825
 826 static int rndis_reset(struct usbnet *usbdev)
 827 {
 828         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 829         struct rndis_reset *reset;
 830         int ret;
 831
 832         mutex_lock(&priv->command_lock);
 833
 834         reset = (void *)priv->command_buffer;
 835         memset(reset, 0, sizeof(*reset));
 836         reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 837         reset->msg_len = cpu_to_le32(sizeof(*reset));
 838         priv->current_command_oid = 0;
 839         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 840
 841         mutex_unlock(&priv->command_lock);
 842
 843         if (ret < 0)
 844                 return ret;
 845         return 0;
 846 }
 847
 848 /*
 849  * Specs say that we can only set config parameters only soon after device
 850  * initialization.
 851  *   value_type: 0 = u32, 2 = unicode string
 852  */
 853 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 854                                                 int value_type, void *value)
 855 {
 856         struct ndis_config_param *infobuf;
 857         int value_len, info_len, param_len, ret, i;
 858         __le16 *unibuf;
 859         __le32 *dst_value;
 860
 861         if (value_type == 0)
 862                 value_len = sizeof(__le32);
 863         else if (value_type == 2)
 864                 value_len = strlen(value) * sizeof(__le16);
 865         else
 866                 return -EINVAL;
 867
 868         param_len = strlen(param) * sizeof(__le16);
 869         info_len = sizeof(*infobuf) + param_len + value_len;
 870
 871 #ifdef DEBUG
 872         info_len += 12;
 873 #endif
 874         infobuf = kmalloc(info_len, GFP_KERNEL);
 875         if (!infobuf)
 876                 return -ENOMEM;
 877
 878 #ifdef DEBUG
 879         info_len -= 12;
 880         /* extra 12 bytes are for padding (debug output) */
 881         memset(infobuf, 0xCC, info_len + 12);
 882 #endif
 883
 884         if (value_type == 2)
 885                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 886                            param, (u8 *)value);
 887         else
 888                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 889                            param, *(u32 *)value);
 890
 891         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 892         infobuf->name_length = cpu_to_le32(param_len);
 893         infobuf->type = cpu_to_le32(value_type);
 894         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 895         infobuf->value_length = cpu_to_le32(value_len);
 896
 897         /* simple string to unicode string conversion */
 898         unibuf = (void *)infobuf + sizeof(*infobuf);
 899         for (i = 0; i < param_len / sizeof(__le16); i++)
 900                 unibuf[i] = cpu_to_le16(param[i]);
 901
 902         if (value_type == 2) {
 903                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 904                 for (i = 0; i < value_len / sizeof(__le16); i++)
 905                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 906         } else {
 907                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 908                 *dst_value = cpu_to_le32(*(u32 *)value);
 909         }
 910
 911 #ifdef DEBUG
 912         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 913         for (i = 0; i < info_len; i += 12) {
 914                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 915                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 916                            cpu_to_be32(tmp[0]),
 917                            cpu_to_be32(tmp[1]),
 918                            cpu_to_be32(tmp[2]));
 919         }
 920 #endif
 921
 922         ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 923                                                         infobuf, info_len);
 924         if (ret != 0)
 925                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 926                            ret);
 927
 928         kfree(infobuf);
 929         return ret;
 930 }
 931
 932 static int rndis_set_config_parameter_str(struct usbnet *dev,
 933                                                 char *param, char *value)
 934 {
 935         return rndis_set_config_parameter(dev, param, 2, value);
 936 }
 937
 938 /*
 939  * data conversion functions
 940  */
 941 static int level_to_qual(int level)
 942 {
 943         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 944         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 945 }
 946
 947 /*
 948  * common functions
 949  */
 950 static int set_infra_mode(struct usbnet *usbdev, int mode);
 951 static void restore_keys(struct usbnet *usbdev);
 952 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 953                                         bool *matched);
 954
 955 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 956 {
 957         __le32 tmp;
 958
 959         /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 960         tmp = cpu_to_le32(1);
 961         return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 962                                                         sizeof(tmp));
 963 }
 964
 965 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 966 {
 967         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 968         int ret;
 969
 970         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 971                             ssid, sizeof(*ssid));
 972         if (ret < 0) {
 973                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 974                 return ret;
 975         }
 976         if (ret == 0) {
 977                 priv->radio_on = true;
 978                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
 979         }
 980
 981         return ret;
 982 }
 983
 984 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
 985 {
 986         int ret;
 987
 988         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
 989                             bssid, ETH_ALEN);
 990         if (ret < 0) {
 991                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
 992                             bssid, ret);
 993                 return ret;
 994         }
 995
 996         return ret;
 997 }
 998
 999 static int clear_bssid(struct usbnet *usbdev)
1000 {
1001         static const u8 broadcast_mac[ETH_ALEN] = {
1002                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1003         };
1004
1005         return set_bssid(usbdev, broadcast_mac);
1006 }
1007
1008 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1009 {
1010         int ret, len;
1011
1012         len = ETH_ALEN;
1013         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1014                               bssid, &len);
1015
1016         if (ret != 0)
1017                 eth_zero_addr(bssid);
1018
1019         return ret;
1020 }
1021
1022 static int get_association_info(struct usbnet *usbdev,
1023                         struct ndis_80211_assoc_info *info, int len)
1024 {
1025         return rndis_query_oid(usbdev,
1026                         RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1027                         info, &len);
1028 }
1029
1030 static bool is_associated(struct usbnet *usbdev)
1031 {
1032         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1033         u8 bssid[ETH_ALEN];
1034
1035         if (!priv->radio_on)
1036                 return false;
1037
1038         return (get_bssid(usbdev, bssid) == 0 && !is_zero_ether_addr(bssid));
1039 }
1040
1041 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1042 {
1043         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1044         struct ndis_80211_ssid ssid;
1045         int i, ret = 0;
1046
1047         if (priv->radio_on) {
1048                 ret = rndis_set_oid(usbdev,
1049                                 RNDIS_OID_802_11_DISASSOCIATE,
1050                                 NULL, 0);
1051                 if (ret == 0) {
1052                         priv->radio_on = false;
1053                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1054                                    __func__);
1055
1056                         if (reset_ssid)
1057                                 msleep(100);
1058                 }
1059         }
1060
1061         /* disassociate causes radio to be turned off; if reset_ssid
1062          * is given, set random ssid to enable radio */
1063         if (reset_ssid) {
1064                 /* Set device to infrastructure mode so we don't get ad-hoc
1065                  * 'media connect' indications with the random ssid.
1066                  */
1067                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1068
1069                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1070                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1071                 ssid.essid[0] = 0x1;
1072                 ssid.essid[1] = 0xff;
1073                 for (i = 2; i < sizeof(ssid.essid); i++)
1074                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1075                 ret = set_essid(usbdev, &ssid);
1076         }
1077         return ret;
1078 }
1079
1080 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1081                                 enum nl80211_auth_type auth_type, int keymgmt)
1082 {
1083         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1084         __le32 tmp;
1085         int auth_mode, ret;
1086
1087         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1088                    __func__, wpa_version, auth_type, keymgmt);
1089
1090         if (wpa_version & NL80211_WPA_VERSION_2) {
1091                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1092                         auth_mode = NDIS_80211_AUTH_WPA2;
1093                 else
1094                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1095         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1096                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1097                         auth_mode = NDIS_80211_AUTH_WPA;
1098                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1099                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1100                 else
1101                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1102         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1103                 auth_mode = NDIS_80211_AUTH_SHARED;
1104         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1105                 auth_mode = NDIS_80211_AUTH_OPEN;
1106         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1107                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1108         else
1109                 return -ENOTSUPP;
1110
1111         tmp = cpu_to_le32(auth_mode);
1112         ret = rndis_set_oid(usbdev,
1113                             RNDIS_OID_802_11_AUTHENTICATION_MODE,
1114                             &tmp, sizeof(tmp));
1115         if (ret != 0) {
1116                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1117                             ret);
1118                 return ret;
1119         }
1120
1121         priv->wpa_version = wpa_version;
1122
1123         return 0;
1124 }
1125
1126 static int set_priv_filter(struct usbnet *usbdev)
1127 {
1128         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1129         __le32 tmp;
1130
1131         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1132                    __func__, priv->wpa_version);
1133
1134         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1135             priv->wpa_version & NL80211_WPA_VERSION_1)
1136                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1137         else
1138                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1139
1140         return rndis_set_oid(usbdev,
1141                              RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1142                              sizeof(tmp));
1143 }
1144
1145 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1146 {
1147         __le32 tmp;
1148         int encr_mode, ret;
1149
1150         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1151                    __func__, pairwise, groupwise);
1152
1153         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1154                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1155         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1156                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1157         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1158                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1159         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1160                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1161         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1162                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1163         else
1164                 encr_mode = NDIS_80211_ENCR_DISABLED;
1165
1166         tmp = cpu_to_le32(encr_mode);
1167         ret = rndis_set_oid(usbdev,
1168                         RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1169                         sizeof(tmp));
1170         if (ret != 0) {
1171                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1172                             ret);
1173                 return ret;
1174         }
1175
1176         return 0;
1177 }
1178
1179 static int set_infra_mode(struct usbnet *usbdev, int mode)
1180 {
1181         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1182         __le32 tmp;
1183         int ret;
1184
1185         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1186                    __func__, priv->infra_mode);
1187
1188         tmp = cpu_to_le32(mode);
1189         ret = rndis_set_oid(usbdev,
1190                             RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1191                             &tmp, sizeof(tmp));
1192         if (ret != 0) {
1193                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1194                             ret);
1195                 return ret;
1196         }
1197
1198         /* NDIS drivers clear keys when infrastructure mode is
1199          * changed. But Linux tools assume otherwise. So set the
1200          * keys */
1201         restore_keys(usbdev);
1202
1203         priv->infra_mode = mode;
1204         return 0;
1205 }
1206
1207 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1208 {
1209         __le32 tmp;
1210
1211         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1212
1213         if (rts_threshold == -1 || rts_threshold > 2347)
1214                 rts_threshold = 2347;
1215
1216         tmp = cpu_to_le32(rts_threshold);
1217         return rndis_set_oid(usbdev,
1218                              RNDIS_OID_802_11_RTS_THRESHOLD,
1219                              &tmp, sizeof(tmp));
1220 }
1221
1222 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1223 {
1224         __le32 tmp;
1225
1226         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1227
1228         if (frag_threshold < 256 || frag_threshold > 2346)
1229                 frag_threshold = 2346;
1230
1231         tmp = cpu_to_le32(frag_threshold);
1232         return rndis_set_oid(usbdev,
1233                         RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1234                         &tmp, sizeof(tmp));
1235 }
1236
1237 static void set_default_iw_params(struct usbnet *usbdev)
1238 {
1239         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1240         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1241                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1242         set_priv_filter(usbdev);
1243         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1244 }
1245
1246 static int deauthenticate(struct usbnet *usbdev)
1247 {
1248         int ret;
1249
1250         ret = disassociate(usbdev, true);
1251         set_default_iw_params(usbdev);
1252         return ret;
1253 }
1254
1255 static int set_channel(struct usbnet *usbdev, int channel)
1256 {
1257         struct ndis_80211_conf config;
1258         unsigned int dsconfig;
1259         int len, ret;
1260
1261         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1262
1263         /* this OID is valid only when not associated */
1264         if (is_associated(usbdev))
1265                 return 0;
1266
1267         dsconfig = 1000 *
1268                 ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1269
1270         len = sizeof(config);
1271         ret = rndis_query_oid(usbdev,
1272                         RNDIS_OID_802_11_CONFIGURATION,
1273                         &config, &len);
1274         if (ret < 0) {
1275                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1276                            __func__);
1277                 return ret;
1278         }
1279
1280         config.ds_config = cpu_to_le32(dsconfig);
1281         ret = rndis_set_oid(usbdev,
1282                         RNDIS_OID_802_11_CONFIGURATION,
1283                         &config, sizeof(config));
1284
1285         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1286
1287         return ret;
1288 }
1289
1290 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1291                                                      u32 *beacon_period)
1292 {
1293         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1294         struct ieee80211_channel *channel;
1295         struct ndis_80211_conf config;
1296         int len, ret;
1297
1298         /* Get channel and beacon interval */
1299         len = sizeof(config);
1300         ret = rndis_query_oid(usbdev,
1301                         RNDIS_OID_802_11_CONFIGURATION,
1302                         &config, &len);
1303         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1304                                 __func__, ret);
1305         if (ret < 0)
1306                 return NULL;
1307
1308         channel = ieee80211_get_channel(priv->wdev.wiphy,
1309                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1310         if (!channel)
1311                 return NULL;
1312
1313         if (beacon_period)
1314                 *beacon_period = le32_to_cpu(config.beacon_period);
1315         return channel;
1316 }
1317
1318 /* index must be 0 - N, as per NDIS  */
1319 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1320                                                                 u8 index)
1321 {
1322         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1323         struct ndis_80211_wep_key ndis_key;
1324         u32 cipher;
1325         int ret;
1326
1327         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1328                    __func__, index, key_len);
1329
1330         if (index >= RNDIS_WLAN_NUM_KEYS)
1331                 return -EINVAL;
1332
1333         if (key_len == 5)
1334                 cipher = WLAN_CIPHER_SUITE_WEP40;
1335         else if (key_len == 13)
1336                 cipher = WLAN_CIPHER_SUITE_WEP104;
1337         else
1338                 return -EINVAL;
1339
1340         memset(&ndis_key, 0, sizeof(ndis_key));
1341
1342         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1343         ndis_key.length = cpu_to_le32(key_len);
1344         ndis_key.index = cpu_to_le32(index);
1345         memcpy(&ndis_key.material, key, key_len);
1346
1347         if (index == priv->encr_tx_key_index) {
1348                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1349                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1350                                                         RNDIS_WLAN_ALG_NONE);
1351                 if (ret)
1352                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1353                                     ret);
1354         }
1355
1356         ret = rndis_set_oid(usbdev,
1357                         RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1358                         sizeof(ndis_key));
1359         if (ret != 0) {
1360                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1361                             index + 1, ret);
1362                 return ret;
1363         }
1364
1365         priv->encr_keys[index].len = key_len;
1366         priv->encr_keys[index].cipher = cipher;
1367         memcpy(&priv->encr_keys[index].material, key, key_len);
1368         eth_broadcast_addr(priv->encr_keys[index].bssid);
1369
1370         return 0;
1371 }
1372
1373 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1374                         u8 index, const u8 *addr, const u8 *rx_seq,
1375                         int seq_len, u32 cipher, __le32 flags)
1376 {
1377         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1378         struct ndis_80211_key ndis_key;
1379         bool is_addr_ok;
1380         int ret;
1381
1382         if (index >= RNDIS_WLAN_NUM_KEYS) {
1383                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1384                            __func__, index);
1385                 return -EINVAL;
1386         }
1387         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1388                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1389                            __func__, key_len);
1390                 return -EINVAL;
1391         }
1392         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1393                 if (!rx_seq || seq_len <= 0) {
1394                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1395                                    __func__);
1396                         return -EINVAL;
1397                 }
1398                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1399                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1400                         return -EINVAL;
1401                 }
1402         }
1403
1404         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1405                                         !is_broadcast_ether_addr(addr);
1406         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1407                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1408                            __func__, addr);
1409                 return -EINVAL;
1410         }
1411
1412         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1413                    __func__, index,
1414                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1415                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1416                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1417
1418         memset(&ndis_key, 0, sizeof(ndis_key));
1419
1420         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1421                                 sizeof(ndis_key.material) + key_len);
1422         ndis_key.length = cpu_to_le32(key_len);
1423         ndis_key.index = cpu_to_le32(index) | flags;
1424
1425         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1426                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1427                  * different order than NDIS spec, so swap the order here. */
1428                 memcpy(ndis_key.material, key, 16);
1429                 memcpy(ndis_key.material + 16, key + 24, 8);
1430                 memcpy(ndis_key.material + 24, key + 16, 8);
1431         } else
1432                 memcpy(ndis_key.material, key, key_len);
1433
1434         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1435                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1436
1437         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1438                 /* pairwise key */
1439                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1440         } else {
1441                 /* group key */
1442                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1443                         eth_broadcast_addr(ndis_key.bssid);
1444                 else
1445                         get_bssid(usbdev, ndis_key.bssid);
1446         }
1447
1448         ret = rndis_set_oid(usbdev,
1449                         RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1450                         le32_to_cpu(ndis_key.size));
1451         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1452                    __func__, ret);
1453         if (ret != 0)
1454                 return ret;
1455
1456         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1457         priv->encr_keys[index].len = key_len;
1458         priv->encr_keys[index].cipher = cipher;
1459         memcpy(&priv->encr_keys[index].material, key, key_len);
1460         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1461                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1462         else
1463                 eth_broadcast_addr(priv->encr_keys[index].bssid);
1464
1465         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1466                 priv->encr_tx_key_index = index;
1467
1468         return 0;
1469 }
1470
1471 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1472 {
1473         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1474         struct rndis_wlan_encr_key key;
1475
1476         if (is_wpa_key(priv, key_idx))
1477                 return 0;
1478
1479         key = priv->encr_keys[key_idx];
1480
1481         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1482
1483         if (key.len == 0)
1484                 return 0;
1485
1486         return add_wep_key(usbdev, key.material, key.len, key_idx);
1487 }
1488
1489 static void restore_keys(struct usbnet *usbdev)
1490 {
1491         int i;
1492
1493         for (i = 0; i < 4; i++)
1494                 restore_key(usbdev, i);
1495 }
1496
1497 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1498 {
1499         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1500 }
1501
1502 /* remove_key is for both wep and wpa */
1503 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1504 {
1505         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1506         struct ndis_80211_remove_key remove_key;
1507         __le32 keyindex;
1508         bool is_wpa;
1509         int ret;
1510
1511         if (index >= RNDIS_WLAN_NUM_KEYS)
1512                 return -ENOENT;
1513
1514         if (priv->encr_keys[index].len == 0)
1515                 return 0;
1516
1517         is_wpa = is_wpa_key(priv, index);
1518
1519         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1520                    __func__, index, is_wpa ? "wpa" : "wep",
1521                    priv->encr_keys[index].len);
1522
1523         clear_key(priv, index);
1524
1525         if (is_wpa) {
1526                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1527                 remove_key.index = cpu_to_le32(index);
1528                 if (bssid) {
1529                         /* pairwise key */
1530                         if (!is_broadcast_ether_addr(bssid))
1531                                 remove_key.index |=
1532                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1533                         memcpy(remove_key.bssid, bssid,
1534                                         sizeof(remove_key.bssid));
1535                 } else
1536                         memset(remove_key.bssid, 0xff,
1537                                                 sizeof(remove_key.bssid));
1538
1539                 ret = rndis_set_oid(usbdev,
1540                                 RNDIS_OID_802_11_REMOVE_KEY,
1541                                 &remove_key, sizeof(remove_key));
1542                 if (ret != 0)
1543                         return ret;
1544         } else {
1545                 keyindex = cpu_to_le32(index);
1546                 ret = rndis_set_oid(usbdev,
1547                                 RNDIS_OID_802_11_REMOVE_WEP,
1548                                 &keyindex, sizeof(keyindex));
1549                 if (ret != 0) {
1550                         netdev_warn(usbdev->net,
1551                                     "removing encryption key %d failed (%08X)\n",
1552                                     index, ret);
1553                         return ret;
1554                 }
1555         }
1556
1557         /* if it is transmit key, disable encryption */
1558         if (index == priv->encr_tx_key_index)
1559                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1560
1561         return 0;
1562 }
1563
1564 static void set_multicast_list(struct usbnet *usbdev)
1565 {
1566         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1567         struct netdev_hw_addr *ha;
1568         __le32 filter, basefilter;
1569         int ret;
1570         char *mc_addrs = NULL;
1571         int mc_count;
1572
1573         basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1574                                           RNDIS_PACKET_TYPE_BROADCAST);
1575
1576         if (usbdev->net->flags & IFF_PROMISC) {
1577                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1578                                       RNDIS_PACKET_TYPE_ALL_LOCAL);
1579         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1580                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1581         }
1582
1583         if (filter != basefilter)
1584                 goto set_filter;
1585
1586         /*
1587          * mc_list should be accessed holding the lock, so copy addresses to
1588          * local buffer first.
1589          */
1590         netif_addr_lock_bh(usbdev->net);
1591         mc_count = netdev_mc_count(usbdev->net);
1592         if (mc_count > priv->multicast_size) {
1593                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1594         } else if (mc_count) {
1595                 int i = 0;
1596
1597                 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1598                 if (!mc_addrs) {
1599                         netif_addr_unlock_bh(usbdev->net);
1600                         return;
1601                 }
1602
1603                 netdev_for_each_mc_addr(ha, usbdev->net)
1604                         memcpy(mc_addrs + i++ * ETH_ALEN,
1605                                ha->addr, ETH_ALEN);
1606         }
1607         netif_addr_unlock_bh(usbdev->net);
1608
1609         if (filter != basefilter)
1610                 goto set_filter;
1611
1612         if (mc_count) {
1613                 ret = rndis_set_oid(usbdev,
1614                                 RNDIS_OID_802_3_MULTICAST_LIST,
1615                                 mc_addrs, mc_count * ETH_ALEN);
1616                 kfree(mc_addrs);
1617                 if (ret == 0)
1618                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1619                 else
1620                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1621
1622                 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1623                            mc_count, priv->multicast_size, ret);
1624         }
1625
1626 set_filter:
1627         ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1628                                                         sizeof(filter));
1629         if (ret < 0) {
1630                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1631                             le32_to_cpu(filter));
1632         }
1633
1634         netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1635                    le32_to_cpu(filter), ret);
1636 }
1637
1638 #ifdef DEBUG
1639 static void debug_print_pmkids(struct usbnet *usbdev,
1640                                 struct ndis_80211_pmkid *pmkids,
1641                                 const char *func_str)
1642 {
1643         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1644         int i, len, count, max_pmkids, entry_len;
1645
1646         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1647         len = le32_to_cpu(pmkids->length);
1648         count = le32_to_cpu(pmkids->bssid_info_count);
1649
1650         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1651
1652         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1653                                 "%d)\n", func_str, count, len, entry_len);
1654
1655         if (count > max_pmkids)
1656                 count = max_pmkids;
1657
1658         for (i = 0; i < count; i++) {
1659                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1660
1661                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1662                                 "pmkid: %08X:%08X:%08X:%08X\n",
1663                                 func_str, pmkids->bssid_info[i].bssid,
1664                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1665                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1666         }
1667 }
1668 #else
1669 static void debug_print_pmkids(struct usbnet *usbdev,
1670                                 struct ndis_80211_pmkid *pmkids,
1671                                 const char *func_str)
1672 {
1673         return;
1674 }
1675 #endif
1676
1677 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1678 {
1679         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1680         struct ndis_80211_pmkid *pmkids;
1681         int len, ret, max_pmkids;
1682
1683         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1684         len = struct_size(pmkids, bssid_info, max_pmkids);
1685
1686         pmkids = kzalloc(len, GFP_KERNEL);
1687         if (!pmkids)
1688                 return ERR_PTR(-ENOMEM);
1689
1690         pmkids->length = cpu_to_le32(len);
1691         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1692
1693         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1694                         pmkids, &len);
1695         if (ret < 0) {
1696                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1697                                 " -> %d\n", __func__, len, max_pmkids, ret);
1698
1699                 kfree(pmkids);
1700                 return ERR_PTR(ret);
1701         }
1702
1703         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1704                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1705
1706         debug_print_pmkids(usbdev, pmkids, __func__);
1707
1708         return pmkids;
1709 }
1710
1711 static int set_device_pmkids(struct usbnet *usbdev,
1712                                 struct ndis_80211_pmkid *pmkids)
1713 {
1714         int ret, len, num_pmkids;
1715
1716         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1717         len = struct_size(pmkids, bssid_info, num_pmkids);
1718         pmkids->length = cpu_to_le32(len);
1719
1720         debug_print_pmkids(usbdev, pmkids, __func__);
1721
1722         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1723                             le32_to_cpu(pmkids->length));
1724         if (ret < 0) {
1725                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1726                                 "\n", __func__, len, num_pmkids, ret);
1727         }
1728
1729         kfree(pmkids);
1730         return ret;
1731 }
1732
1733 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1734                                                 struct ndis_80211_pmkid *pmkids,
1735                                                 struct cfg80211_pmksa *pmksa,
1736                                                 int max_pmkids)
1737 {
1738         int i, err;
1739         unsigned int count;
1740
1741         count = le32_to_cpu(pmkids->bssid_info_count);
1742
1743         if (count > max_pmkids)
1744                 count = max_pmkids;
1745
1746         for (i = 0; i < count; i++)
1747                 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1748                                      pmksa->bssid))
1749                         break;
1750
1751         /* pmkid not found */
1752         if (i == count) {
1753                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1754                                         __func__, pmksa->bssid);
1755                 err = -ENOENT;
1756                 goto error;
1757         }
1758
1759         for (; i + 1 < count; i++)
1760                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1761
1762         count--;
1763         pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1764         pmkids->bssid_info_count = cpu_to_le32(count);
1765
1766         return pmkids;
1767 error:
1768         kfree(pmkids);
1769         return ERR_PTR(err);
1770 }
1771
1772 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1773                                                 struct ndis_80211_pmkid *pmkids,
1774                                                 struct cfg80211_pmksa *pmksa,
1775                                                 int max_pmkids)
1776 {
1777         struct ndis_80211_pmkid *new_pmkids;
1778         int i, err, newlen;
1779         unsigned int count;
1780
1781         count = le32_to_cpu(pmkids->bssid_info_count);
1782
1783         if (count > max_pmkids)
1784                 count = max_pmkids;
1785
1786         /* update with new pmkid */
1787         for (i = 0; i < count; i++) {
1788                 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1789                                       pmksa->bssid))
1790                         continue;
1791
1792                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1793                                                                 WLAN_PMKID_LEN);
1794
1795                 return pmkids;
1796         }
1797
1798         /* out of space, return error */
1799         if (i == max_pmkids) {
1800                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1801                 err = -ENOSPC;
1802                 goto error;
1803         }
1804
1805         /* add new pmkid */
1806         newlen = struct_size(pmkids, bssid_info, count + 1);
1807
1808         new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1809         if (!new_pmkids) {
1810                 err = -ENOMEM;
1811                 goto error;
1812         }
1813         pmkids = new_pmkids;
1814
1815         pmkids->length = cpu_to_le32(newlen);
1816         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1817
1818         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1819         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1820
1821         return pmkids;
1822 error:
1823         kfree(pmkids);
1824         return ERR_PTR(err);
1825 }
1826
1827 /*
1828  * cfg80211 ops
1829  */
1830 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1831                                         struct net_device *dev,
1832                                         enum nl80211_iftype type,
1833                                         struct vif_params *params)
1834 {
1835         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1836         struct usbnet *usbdev = priv->usbdev;
1837         int mode;
1838
1839         switch (type) {
1840         case NL80211_IFTYPE_ADHOC:
1841                 mode = NDIS_80211_INFRA_ADHOC;
1842                 break;
1843         case NL80211_IFTYPE_STATION:
1844                 mode = NDIS_80211_INFRA_INFRA;
1845                 break;
1846         default:
1847                 return -EINVAL;
1848         }
1849
1850         priv->wdev.iftype = type;
1851
1852         return set_infra_mode(usbdev, mode);
1853 }
1854
1855 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1856 {
1857         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1858         struct usbnet *usbdev = priv->usbdev;
1859         int err;
1860
1861         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1862                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1863                 if (err < 0)
1864                         return err;
1865         }
1866
1867         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1868                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1869                 if (err < 0)
1870                         return err;
1871         }
1872
1873         return 0;
1874 }
1875
1876 static int rndis_set_tx_power(struct wiphy *wiphy,
1877                               struct wireless_dev *wdev,
1878                               enum nl80211_tx_power_setting type,
1879                               int mbm)
1880 {
1881         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1882         struct usbnet *usbdev = priv->usbdev;
1883
1884         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1885                    __func__, type, mbm);
1886
1887         if (mbm < 0 || (mbm % 100))
1888                 return -ENOTSUPP;
1889
1890         /* Device doesn't support changing txpower after initialization, only
1891          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1892          * currently used.
1893          */
1894         if (type == NL80211_TX_POWER_AUTOMATIC ||
1895             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1896                 if (!priv->radio_on)
1897                         disassociate(usbdev, true); /* turn on radio */
1898
1899                 return 0;
1900         }
1901
1902         return -ENOTSUPP;
1903 }
1904
1905 static int rndis_get_tx_power(struct wiphy *wiphy,
1906                               struct wireless_dev *wdev,
1907                               int *dbm)
1908 {
1909         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1910         struct usbnet *usbdev = priv->usbdev;
1911
1912         *dbm = get_bcm4320_power_dbm(priv);
1913
1914         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1915
1916         return 0;
1917 }
1918
1919 #define SCAN_DELAY_JIFFIES (6 * HZ)
1920 static int rndis_scan(struct wiphy *wiphy,
1921                         struct cfg80211_scan_request *request)
1922 {
1923         struct net_device *dev = request->wdev->netdev;
1924         struct usbnet *usbdev = netdev_priv(dev);
1925         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1926         int ret;
1927         int delay = SCAN_DELAY_JIFFIES;
1928
1929         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1930
1931         /* Get current bssid list from device before new scan, as new scan
1932          * clears internal bssid list.
1933          */
1934         rndis_check_bssid_list(usbdev, NULL, NULL);
1935
1936         if (priv->scan_request && priv->scan_request != request)
1937                 return -EBUSY;
1938
1939         priv->scan_request = request;
1940
1941         ret = rndis_start_bssid_list_scan(usbdev);
1942         if (ret == 0) {
1943                 if (priv->device_type == RNDIS_BCM4320A)
1944                         delay = HZ;
1945
1946                 /* Wait before retrieving scan results from device */
1947                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1948         }
1949
1950         return ret;
1951 }
1952
1953 static bool rndis_bss_info_update(struct usbnet *usbdev,
1954                                   struct ndis_80211_bssid_ex *bssid)
1955 {
1956         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1957         struct ieee80211_channel *channel;
1958         struct cfg80211_bss *bss;
1959         s32 signal;
1960         u64 timestamp;
1961         u16 capability;
1962         u16 beacon_interval;
1963         struct ndis_80211_fixed_ies *fixed;
1964         int ie_len, bssid_len;
1965         u8 *ie;
1966
1967         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1968                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1969
1970         /* parse bssid structure */
1971         bssid_len = le32_to_cpu(bssid->length);
1972
1973         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1974                         sizeof(struct ndis_80211_fixed_ies))
1975                 return false;
1976
1977         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1978
1979         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1980         ie_len = min(bssid_len - (int)sizeof(*bssid),
1981                                         (int)le32_to_cpu(bssid->ie_length));
1982         ie_len -= sizeof(struct ndis_80211_fixed_ies);
1983         if (ie_len < 0)
1984                 return false;
1985
1986         /* extract data for cfg80211_inform_bss */
1987         channel = ieee80211_get_channel(priv->wdev.wiphy,
1988                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1989         if (!channel)
1990                 return false;
1991
1992         signal = level_to_qual(le32_to_cpu(bssid->rssi));
1993         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1994         capability = le16_to_cpu(fixed->capabilities);
1995         beacon_interval = le16_to_cpu(fixed->beacon_interval);
1996
1997         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
1998                                   CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
1999                                   timestamp, capability, beacon_interval,
2000                                   ie, ie_len, signal, GFP_KERNEL);
2001         cfg80211_put_bss(priv->wdev.wiphy, bss);
2002
2003         return (bss != NULL);
2004 }
2005
2006 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2007                                         struct ndis_80211_bssid_ex *bssid,
2008                                         int *bssid_len, void *buf, int len)
2009 {
2010         void *buf_end, *bssid_end;
2011
2012         buf_end = (char *)buf + len;
2013         bssid_end = (char *)bssid + *bssid_len;
2014
2015         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2016                 *bssid_len = 0;
2017                 return NULL;
2018         } else {
2019                 bssid = (void *)((char *)bssid + *bssid_len);
2020                 *bssid_len = le32_to_cpu(bssid->length);
2021                 return bssid;
2022         }
2023 }
2024
2025 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2026                                   int bssid_len, void *buf, int len)
2027 {
2028         void *buf_end, *bssid_end;
2029
2030         if (!bssid || bssid_len <= 0 || bssid_len > len)
2031                 return false;
2032
2033         buf_end = (char *)buf + len;
2034         bssid_end = (char *)bssid + bssid_len;
2035
2036         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2037 }
2038
2039 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2040                                         bool *matched)
2041 {
2042         void *buf = NULL;
2043         struct ndis_80211_bssid_list_ex *bssid_list;
2044         struct ndis_80211_bssid_ex *bssid;
2045         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2046
2047         netdev_dbg(usbdev->net, "%s()\n", __func__);
2048
2049         len = CONTROL_BUFFER_SIZE;
2050 resize_buf:
2051         buf = kzalloc(len, GFP_KERNEL);
2052         if (!buf) {
2053                 ret = -ENOMEM;
2054                 goto out;
2055         }
2056
2057         /* BSSID-list might have got bigger last time we checked, keep
2058          * resizing until it won't get any bigger.
2059          */
2060         new_len = len;
2061         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2062                               buf, &new_len);
2063         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2064                 goto out;
2065
2066         if (new_len > len) {
2067                 len = new_len;
2068                 kfree(buf);
2069                 goto resize_buf;
2070         }
2071
2072         len = new_len;
2073
2074         bssid_list = buf;
2075         count = le32_to_cpu(bssid_list->num_items);
2076         real_count = 0;
2077         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2078
2079         bssid_len = 0;
2080         bssid = next_bssid_list_item((void *)bssid_list->bssid_data,
2081                                      &bssid_len, buf, len);
2082
2083         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2084          * received 'num_items' and walking through full bssid buffer instead.
2085          */
2086         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2087                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2088                     matched) {
2089                         if (ether_addr_equal(bssid->mac, match_bssid))
2090                                 *matched = true;
2091                 }
2092
2093                 real_count++;
2094                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2095         }
2096
2097         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2098                                 " %d\n", __func__, count, real_count);
2099
2100 out:
2101         kfree(buf);
2102         return ret;
2103 }
2104
2105 static void rndis_get_scan_results(struct work_struct *work)
2106 {
2107         struct rndis_wlan_private *priv =
2108                 container_of(work, struct rndis_wlan_private, scan_work.work);
2109         struct usbnet *usbdev = priv->usbdev;
2110         struct cfg80211_scan_info info = {};
2111         int ret;
2112
2113         netdev_dbg(usbdev->net, "get_scan_results\n");
2114
2115         if (!priv->scan_request)
2116                 return;
2117
2118         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2119
2120         info.aborted = ret < 0;
2121         cfg80211_scan_done(priv->scan_request, &info);
2122
2123         priv->scan_request = NULL;
2124 }
2125
2126 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2127                                         struct cfg80211_connect_params *sme)
2128 {
2129         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2130         struct usbnet *usbdev = priv->usbdev;
2131         struct ieee80211_channel *channel = sme->channel;
2132         struct ndis_80211_ssid ssid;
2133         int pairwise = RNDIS_WLAN_ALG_NONE;
2134         int groupwise = RNDIS_WLAN_ALG_NONE;
2135         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2136         int length, i, ret, chan = -1;
2137
2138         if (channel)
2139                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2140
2141         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2142         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2143                 pairwise |=
2144                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2145
2146         if (sme->crypto.n_ciphers_pairwise > 0 &&
2147                         pairwise == RNDIS_WLAN_ALG_NONE) {
2148                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2149                 return -ENOTSUPP;
2150         }
2151
2152         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2153                 keymgmt |=
2154                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2155
2156         if (sme->crypto.n_akm_suites > 0 &&
2157                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2158                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2159                 return -ENOTSUPP;
2160         }
2161
2162         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2163                    sme->ssid, sme->bssid, chan,
2164                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2165                    groupwise, pairwise, keymgmt);
2166
2167         if (is_associated(usbdev))
2168                 disassociate(usbdev, false);
2169
2170         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2171         if (ret < 0) {
2172                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2173                            ret);
2174                 goto err_turn_radio_on;
2175         }
2176
2177         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2178                                                                 keymgmt);
2179         if (ret < 0) {
2180                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2181                            ret);
2182                 goto err_turn_radio_on;
2183         }
2184
2185         set_priv_filter(usbdev);
2186
2187         ret = set_encr_mode(usbdev, pairwise, groupwise);
2188         if (ret < 0) {
2189                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2190                            ret);
2191                 goto err_turn_radio_on;
2192         }
2193
2194         if (channel) {
2195                 ret = set_channel(usbdev, chan);
2196                 if (ret < 0) {
2197                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2198                                    ret);
2199                         goto err_turn_radio_on;
2200                 }
2201         }
2202
2203         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2204                 priv->encr_tx_key_index = sme->key_idx;
2205                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2206                 if (ret < 0) {
2207                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2208                                    ret, sme->key_len, sme->key_idx);
2209                         goto err_turn_radio_on;
2210                 }
2211         }
2212
2213         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2214                                 !is_broadcast_ether_addr(sme->bssid)) {
2215                 ret = set_bssid(usbdev, sme->bssid);
2216                 if (ret < 0) {
2217                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2218                                    ret);
2219                         goto err_turn_radio_on;
2220                 }
2221         } else
2222                 clear_bssid(usbdev);
2223
2224         length = sme->ssid_len;
2225         if (length > NDIS_802_11_LENGTH_SSID)
2226                 length = NDIS_802_11_LENGTH_SSID;
2227
2228         memset(&ssid, 0, sizeof(ssid));
2229         ssid.length = cpu_to_le32(length);
2230         memcpy(ssid.essid, sme->ssid, length);
2231
2232         /* Pause and purge rx queue, so we don't pass packets before
2233          * 'media connect'-indication.
2234          */
2235         usbnet_pause_rx(usbdev);
2236         usbnet_purge_paused_rxq(usbdev);
2237
2238         ret = set_essid(usbdev, &ssid);
2239         if (ret < 0)
2240                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2241         return ret;
2242
2243 err_turn_radio_on:
2244         disassociate(usbdev, true);
2245
2246         return ret;
2247 }
2248
2249 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2250                                                                 u16 reason_code)
2251 {
2252         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2253         struct usbnet *usbdev = priv->usbdev;
2254
2255         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2256
2257         priv->connected = false;
2258         eth_zero_addr(priv->bssid);
2259
2260         return deauthenticate(usbdev);
2261 }
2262
2263 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2264                                         struct cfg80211_ibss_params *params)
2265 {
2266         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2267         struct usbnet *usbdev = priv->usbdev;
2268         struct ieee80211_channel *channel = params->chandef.chan;
2269         struct ndis_80211_ssid ssid;
2270         enum nl80211_auth_type auth_type;
2271         int ret, alg, length, chan = -1;
2272
2273         if (channel)
2274                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2275
2276         /* TODO: How to handle ad-hoc encryption?
2277          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2278          * pre-shared for encryption (open/shared/wpa), is key set before
2279          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2280          */
2281         if (params->privacy) {
2282                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2283                 alg = RNDIS_WLAN_ALG_WEP;
2284         } else {
2285                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2286                 alg = RNDIS_WLAN_ALG_NONE;
2287         }
2288
2289         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2290                    params->ssid, params->bssid, chan, params->privacy);
2291
2292         if (is_associated(usbdev))
2293                 disassociate(usbdev, false);
2294
2295         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2296         if (ret < 0) {
2297                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2298                            ret);
2299                 goto err_turn_radio_on;
2300         }
2301
2302         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2303         if (ret < 0) {
2304                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2305                            ret);
2306                 goto err_turn_radio_on;
2307         }
2308
2309         set_priv_filter(usbdev);
2310
2311         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2312         if (ret < 0) {
2313                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2314                            ret);
2315                 goto err_turn_radio_on;
2316         }
2317
2318         if (channel) {
2319                 ret = set_channel(usbdev, chan);
2320                 if (ret < 0) {
2321                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2322                                    ret);
2323                         goto err_turn_radio_on;
2324                 }
2325         }
2326
2327         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2328                                 !is_broadcast_ether_addr(params->bssid)) {
2329                 ret = set_bssid(usbdev, params->bssid);
2330                 if (ret < 0) {
2331                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2332                                    ret);
2333                         goto err_turn_radio_on;
2334                 }
2335         } else
2336                 clear_bssid(usbdev);
2337
2338         length = params->ssid_len;
2339         if (length > NDIS_802_11_LENGTH_SSID)
2340                 length = NDIS_802_11_LENGTH_SSID;
2341
2342         memset(&ssid, 0, sizeof(ssid));
2343         ssid.length = cpu_to_le32(length);
2344         memcpy(ssid.essid, params->ssid, length);
2345
2346         /* Don't need to pause rx queue for ad-hoc. */
2347         usbnet_purge_paused_rxq(usbdev);
2348         usbnet_resume_rx(usbdev);
2349
2350         ret = set_essid(usbdev, &ssid);
2351         if (ret < 0)
2352                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2353                            ret);
2354         return ret;
2355
2356 err_turn_radio_on:
2357         disassociate(usbdev, true);
2358
2359         return ret;
2360 }
2361
2362 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2363 {
2364         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2365         struct usbnet *usbdev = priv->usbdev;
2366
2367         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2368
2369         priv->connected = false;
2370         eth_zero_addr(priv->bssid);
2371
2372         return deauthenticate(usbdev);
2373 }
2374
2375 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2376                          int link_id,  u8 key_index, bool pairwise,
2377                          const u8 *mac_addr, struct key_params *params)
2378 {
2379         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2380         struct usbnet *usbdev = priv->usbdev;
2381         __le32 flags;
2382
2383         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2384                    __func__, key_index, mac_addr, params->cipher);
2385
2386         switch (params->cipher) {
2387         case WLAN_CIPHER_SUITE_WEP40:
2388         case WLAN_CIPHER_SUITE_WEP104:
2389                 return add_wep_key(usbdev, params->key, params->key_len,
2390                                                                 key_index);
2391         case WLAN_CIPHER_SUITE_TKIP:
2392         case WLAN_CIPHER_SUITE_CCMP:
2393                 flags = 0;
2394
2395                 if (params->seq && params->seq_len > 0)
2396                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2397                 if (mac_addr)
2398                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2399                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2400
2401                 return add_wpa_key(usbdev, params->key, params->key_len,
2402                                 key_index, mac_addr, params->seq,
2403                                 params->seq_len, params->cipher, flags);
2404         default:
2405                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2406                            __func__, params->cipher);
2407                 return -ENOTSUPP;
2408         }
2409 }
2410
2411 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2412                          int link_id, u8 key_index, bool pairwise,
2413                          const u8 *mac_addr)
2414 {
2415         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2416         struct usbnet *usbdev = priv->usbdev;
2417
2418         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2419
2420         return remove_key(usbdev, key_index, mac_addr);
2421 }
2422
2423 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2424                                  int link_id, u8 key_index, bool unicast,
2425                                  bool multicast)
2426 {
2427         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2428         struct usbnet *usbdev = priv->usbdev;
2429         struct rndis_wlan_encr_key key;
2430
2431         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2432
2433         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2434                 return -ENOENT;
2435
2436         priv->encr_tx_key_index = key_index;
2437
2438         if (is_wpa_key(priv, key_index))
2439                 return 0;
2440
2441         key = priv->encr_keys[key_index];
2442
2443         return add_wep_key(usbdev, key.material, key.len, key_index);
2444 }
2445
2446 static void rndis_fill_station_info(struct usbnet *usbdev,
2447                                                 struct station_info *sinfo)
2448 {
2449         __le32 linkspeed, rssi;
2450         int ret, len;
2451
2452         memset(sinfo, 0, sizeof(*sinfo));
2453
2454         len = sizeof(linkspeed);
2455         ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2456         if (ret == 0) {
2457                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2458                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2459         }
2460
2461         len = sizeof(rssi);
2462         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2463                               &rssi, &len);
2464         if (ret == 0) {
2465                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2466                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2467         }
2468 }
2469
2470 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2471                              const u8 *mac, struct station_info *sinfo)
2472 {
2473         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2474         struct usbnet *usbdev = priv->usbdev;
2475
2476         if (!ether_addr_equal(priv->bssid, mac))
2477                 return -ENOENT;
2478
2479         rndis_fill_station_info(usbdev, sinfo);
2480
2481         return 0;
2482 }
2483
2484 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2485                                int idx, u8 *mac, struct station_info *sinfo)
2486 {
2487         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2488         struct usbnet *usbdev = priv->usbdev;
2489
2490         if (idx != 0)
2491                 return -ENOENT;
2492
2493         memcpy(mac, priv->bssid, ETH_ALEN);
2494
2495         rndis_fill_station_info(usbdev, sinfo);
2496
2497         return 0;
2498 }
2499
2500 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2501                                 struct cfg80211_pmksa *pmksa)
2502 {
2503         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2504         struct usbnet *usbdev = priv->usbdev;
2505         struct ndis_80211_pmkid *pmkids;
2506         u32 *tmp = (u32 *)pmksa->pmkid;
2507
2508         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2509                         pmksa->bssid,
2510                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2511                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2512
2513         pmkids = get_device_pmkids(usbdev);
2514         if (IS_ERR(pmkids)) {
2515                 /* couldn't read PMKID cache from device */
2516                 return PTR_ERR(pmkids);
2517         }
2518
2519         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2520         if (IS_ERR(pmkids)) {
2521                 /* not found, list full, etc */
2522                 return PTR_ERR(pmkids);
2523         }
2524
2525         return set_device_pmkids(usbdev, pmkids);
2526 }
2527
2528 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2529                                 struct cfg80211_pmksa *pmksa)
2530 {
2531         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2532         struct usbnet *usbdev = priv->usbdev;
2533         struct ndis_80211_pmkid *pmkids;
2534         u32 *tmp = (u32 *)pmksa->pmkid;
2535
2536         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2537                         pmksa->bssid,
2538                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2539                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2540
2541         pmkids = get_device_pmkids(usbdev);
2542         if (IS_ERR(pmkids)) {
2543                 /* Couldn't read PMKID cache from device */
2544                 return PTR_ERR(pmkids);
2545         }
2546
2547         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2548         if (IS_ERR(pmkids)) {
2549                 /* not found, etc */
2550                 return PTR_ERR(pmkids);
2551         }
2552
2553         return set_device_pmkids(usbdev, pmkids);
2554 }
2555
2556 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2557 {
2558         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2559         struct usbnet *usbdev = priv->usbdev;
2560         struct ndis_80211_pmkid pmkid;
2561
2562         netdev_dbg(usbdev->net, "%s()\n", __func__);
2563
2564         memset(&pmkid, 0, sizeof(pmkid));
2565
2566         pmkid.length = cpu_to_le32(sizeof(pmkid));
2567         pmkid.bssid_info_count = cpu_to_le32(0);
2568
2569         return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2570                              &pmkid, sizeof(pmkid));
2571 }
2572
2573 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2574                                 bool enabled, int timeout)
2575 {
2576         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2577         struct usbnet *usbdev = priv->usbdev;
2578         int power_mode;
2579         __le32 mode;
2580         int ret;
2581
2582         if (priv->device_type != RNDIS_BCM4320B)
2583                 return -ENOTSUPP;
2584
2585         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2586                                 enabled ? "enabled" : "disabled",
2587                                 timeout);
2588
2589         if (enabled)
2590                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2591         else
2592                 power_mode = NDIS_80211_POWER_MODE_CAM;
2593
2594         if (power_mode == priv->power_mode)
2595                 return 0;
2596
2597         priv->power_mode = power_mode;
2598
2599         mode = cpu_to_le32(power_mode);
2600         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2601                             &mode, sizeof(mode));
2602
2603         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2604                                 __func__, ret);
2605
2606         return ret;
2607 }
2608
2609 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2610                                         struct net_device *dev,
2611                                         s32 rssi_thold, u32 rssi_hyst)
2612 {
2613         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2614
2615         priv->cqm_rssi_thold = rssi_thold;
2616         priv->cqm_rssi_hyst = rssi_hyst;
2617         priv->last_cqm_event_rssi = 0;
2618
2619         return 0;
2620 }
2621
2622 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2623                                            struct ndis_80211_assoc_info *info)
2624 {
2625         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2626         struct ieee80211_channel *channel;
2627         struct ndis_80211_ssid ssid;
2628         struct cfg80211_bss *bss;
2629         s32 signal;
2630         u64 timestamp;
2631         u16 capability;
2632         u32 beacon_period = 0;
2633         __le32 rssi;
2634         u8 ie_buf[34];
2635         int len, ret, ie_len;
2636
2637         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2638         len = sizeof(rssi);
2639         rssi = 0;
2640         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2641                               &rssi, &len);
2642         signal = level_to_qual(le32_to_cpu(rssi));
2643
2644         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2645                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2646                    level_to_qual(le32_to_cpu(rssi)));
2647
2648         /* Get AP capabilities */
2649         if (info) {
2650                 capability = le16_to_cpu(info->resp_ie.capa);
2651         } else {
2652                 /* Set atleast ESS/IBSS capability */
2653                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2654                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2655         }
2656
2657         /* Get channel and beacon interval */
2658         channel = get_current_channel(usbdev, &beacon_period);
2659         if (!channel) {
2660                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2661                                         __func__);
2662                 return;
2663         }
2664
2665         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2666         len = sizeof(ssid);
2667         memset(&ssid, 0, sizeof(ssid));
2668         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2669                               &ssid, &len);
2670         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2671                                 "'%.32s'\n", __func__, ret,
2672                                 le32_to_cpu(ssid.length), ssid.essid);
2673
2674         if (le32_to_cpu(ssid.length) > 32)
2675                 ssid.length = cpu_to_le32(32);
2676
2677         ie_buf[0] = WLAN_EID_SSID;
2678         ie_buf[1] = le32_to_cpu(ssid.length);
2679         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2680
2681         ie_len = le32_to_cpu(ssid.length) + 2;
2682
2683         /* no tsf */
2684         timestamp = 0;
2685
2686         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2687                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2688                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2689                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2690                 ssid.essid, signal);
2691
2692         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2693                                   CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2694                                   timestamp, capability, beacon_period,
2695                                   ie_buf, ie_len, signal, GFP_KERNEL);
2696         cfg80211_put_bss(priv->wdev.wiphy, bss);
2697 }
2698
2699 /*
2700  * workers, indication handlers, device poller
2701  */
2702 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2703 {
2704         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2705         struct ndis_80211_assoc_info *info = NULL;
2706         u8 bssid[ETH_ALEN];
2707         unsigned int resp_ie_len, req_ie_len;
2708         unsigned int offset;
2709         u8 *req_ie, *resp_ie;
2710         int ret;
2711         bool roamed = false;
2712         bool match_bss;
2713
2714         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2715                 /* received media connect indication while connected, either
2716                  * device reassociated with same AP or roamed to new. */
2717                 roamed = true;
2718         }
2719
2720         req_ie_len = 0;
2721         resp_ie_len = 0;
2722         req_ie = NULL;
2723         resp_ie = NULL;
2724
2725         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2726                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2727                 if (!info) {
2728                         /* No memory? Try resume work later */
2729                         set_bit(WORK_LINK_UP, &priv->work_pending);
2730                         queue_work(priv->workqueue, &priv->work);
2731                         return;
2732                 }
2733
2734                 /* Get association info IEs from device. */
2735                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2736                 if (!ret) {
2737                         req_ie_len = le32_to_cpu(info->req_ie_length);
2738                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2739                                 req_ie_len = CONTROL_BUFFER_SIZE;
2740                         if (req_ie_len != 0) {
2741                                 offset = le32_to_cpu(info->offset_req_ies);
2742
2743                                 if (offset > CONTROL_BUFFER_SIZE)
2744                                         offset = CONTROL_BUFFER_SIZE;
2745
2746                                 req_ie = (u8 *)info + offset;
2747
2748                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2749                                         req_ie_len =
2750                                                 CONTROL_BUFFER_SIZE - offset;
2751                         }
2752
2753                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2754                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2755                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2756                         if (resp_ie_len != 0) {
2757                                 offset = le32_to_cpu(info->offset_resp_ies);
2758
2759                                 if (offset > CONTROL_BUFFER_SIZE)
2760                                         offset = CONTROL_BUFFER_SIZE;
2761
2762                                 resp_ie = (u8 *)info + offset;
2763
2764                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2765                                         resp_ie_len =
2766                                                 CONTROL_BUFFER_SIZE - offset;
2767                         }
2768                 } else {
2769                         /* Since rndis_wlan_craft_connected_bss() might use info
2770                          * later and expects info to contain valid data if
2771                          * non-null, free info and set NULL here.
2772                          */
2773                         kfree(info);
2774                         info = NULL;
2775                 }
2776         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2777                 return;
2778
2779         ret = get_bssid(usbdev, bssid);
2780         if (ret < 0)
2781                 memset(bssid, 0, sizeof(bssid));
2782
2783         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2784                    bssid, roamed ? " roamed" : "");
2785
2786         /* Internal bss list in device should contain at least the currently
2787          * connected bss and we can get it to cfg80211 with
2788          * rndis_check_bssid_list().
2789          *
2790          * NDIS spec says: "If the device is associated, but the associated
2791          *  BSSID is not in its BSSID scan list, then the driver must add an
2792          *  entry for the BSSID at the end of the data that it returns in
2793          *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2794          *
2795          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2796          */
2797         match_bss = false;
2798         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2799
2800         if (!is_zero_ether_addr(bssid) && !match_bss) {
2801                 /* Couldn't get bss from device, we need to manually craft bss
2802                  * for cfg80211.
2803                  */
2804                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2805         }
2806
2807         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2808                 if (!roamed) {
2809                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2810                                                 req_ie_len, resp_ie,
2811                                                 resp_ie_len, 0, GFP_KERNEL);
2812                 } else {
2813                         struct cfg80211_roam_info roam_info = {
2814                                 .links[0].channel =
2815                                         get_current_channel(usbdev, NULL),
2816                                 .links[0].bssid = bssid,
2817                                 .req_ie = req_ie,
2818                                 .req_ie_len = req_ie_len,
2819                                 .resp_ie = resp_ie,
2820                                 .resp_ie_len = resp_ie_len,
2821                         };
2822
2823                         cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2824                 }
2825         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2826                 cfg80211_ibss_joined(usbdev->net, bssid,
2827                                      get_current_channel(usbdev, NULL),
2828                                      GFP_KERNEL);
2829
2830         kfree(info);
2831
2832         priv->connected = true;
2833         memcpy(priv->bssid, bssid, ETH_ALEN);
2834
2835         usbnet_resume_rx(usbdev);
2836         netif_carrier_on(usbdev->net);
2837 }
2838
2839 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2840 {
2841         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2842
2843         if (priv->connected) {
2844                 priv->connected = false;
2845                 eth_zero_addr(priv->bssid);
2846
2847                 deauthenticate(usbdev);
2848
2849                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2850         }
2851
2852         netif_carrier_off(usbdev->net);
2853 }
2854
2855 static void rndis_wlan_worker(struct work_struct *work)
2856 {
2857         struct rndis_wlan_private *priv =
2858                 container_of(work, struct rndis_wlan_private, work);
2859         struct usbnet *usbdev = priv->usbdev;
2860
2861         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2862                 rndis_wlan_do_link_up_work(usbdev);
2863
2864         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2865                 rndis_wlan_do_link_down_work(usbdev);
2866
2867         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2868                 set_multicast_list(usbdev);
2869 }
2870
2871 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2872 {
2873         struct usbnet *usbdev = netdev_priv(dev);
2874         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2875
2876         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2877                 return;
2878
2879         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2880         queue_work(priv->workqueue, &priv->work);
2881 }
2882
2883 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2884                                 struct ndis_80211_status_indication *indication,
2885                                 int len)
2886 {
2887         u8 *buf;
2888         const char *type;
2889         int flags, buflen, key_id;
2890         bool pairwise_error, group_error;
2891         struct ndis_80211_auth_request *auth_req;
2892         enum nl80211_key_type key_type;
2893
2894         /* must have at least one array entry */
2895         if (len < offsetof(struct ndis_80211_status_indication, u) +
2896                                 sizeof(struct ndis_80211_auth_request)) {
2897                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2898                             len);
2899                 return;
2900         }
2901
2902         buf = (void *)&indication->u.auth_request[0];
2903         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2904
2905         while (buflen >= sizeof(*auth_req)) {
2906                 auth_req = (void *)buf;
2907                 if (buflen < le32_to_cpu(auth_req->length))
2908                         return;
2909                 type = "unknown";
2910                 flags = le32_to_cpu(auth_req->flags);
2911                 pairwise_error = false;
2912                 group_error = false;
2913
2914                 if (flags & 0x1)
2915                         type = "reauth request";
2916                 if (flags & 0x2)
2917                         type = "key update request";
2918                 if (flags & 0x6) {
2919                         pairwise_error = true;
2920                         type = "pairwise_error";
2921                 }
2922                 if (flags & 0xe) {
2923                         group_error = true;
2924                         type = "group_error";
2925                 }
2926
2927                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2928                             type, le32_to_cpu(auth_req->flags));
2929
2930                 if (pairwise_error) {
2931                         key_type = NL80211_KEYTYPE_PAIRWISE;
2932                         key_id = -1;
2933
2934                         cfg80211_michael_mic_failure(usbdev->net,
2935                                                         auth_req->bssid,
2936                                                         key_type, key_id, NULL,
2937                                                         GFP_KERNEL);
2938                 }
2939
2940                 if (group_error) {
2941                         key_type = NL80211_KEYTYPE_GROUP;
2942                         key_id = -1;
2943
2944                         cfg80211_michael_mic_failure(usbdev->net,
2945                                                         auth_req->bssid,
2946                                                         key_type, key_id, NULL,
2947                                                         GFP_KERNEL);
2948                 }
2949
2950                 buflen -= le32_to_cpu(auth_req->length);
2951                 buf += le32_to_cpu(auth_req->length);
2952         }
2953 }
2954
2955 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2956                                 struct ndis_80211_status_indication *indication,
2957                                 int len)
2958 {
2959         struct ndis_80211_pmkid_cand_list *cand_list;
2960         int list_len, expected_len, i;
2961
2962         if (len < offsetof(struct ndis_80211_status_indication, u) +
2963                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2964                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2965                             len);
2966                 return;
2967         }
2968
2969         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2970                         sizeof(struct ndis_80211_pmkid_candidate);
2971         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2972                         offsetof(struct ndis_80211_status_indication, u);
2973
2974         if (len < expected_len) {
2975                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2976                             len, expected_len);
2977                 return;
2978         }
2979
2980         cand_list = &indication->u.cand_list;
2981
2982         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2983                     le32_to_cpu(cand_list->version),
2984                     le32_to_cpu(cand_list->num_candidates));
2985
2986         if (le32_to_cpu(cand_list->version) != 1)
2987                 return;
2988
2989         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2990                 struct ndis_80211_pmkid_candidate *cand =
2991                                                 &cand_list->candidate_list[i];
2992                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
2993
2994                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
2995                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
2996
2997                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
2998                                                 preauth, GFP_ATOMIC);
2999         }
3000 }
3001
3002 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3003                         struct rndis_indicate *msg, int buflen)
3004 {
3005         struct ndis_80211_status_indication *indication;
3006         unsigned int len, offset;
3007
3008         offset = offsetof(struct rndis_indicate, status) +
3009                         le32_to_cpu(msg->offset);
3010         len = le32_to_cpu(msg->length);
3011
3012         if (len < 8) {
3013                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3014                             len);
3015                 return;
3016         }
3017
3018         if (len > buflen || offset > buflen || offset + len > buflen) {
3019                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3020                             offset + len, buflen);
3021                 return;
3022         }
3023
3024         indication = (void *)((u8 *)msg + offset);
3025
3026         switch (le32_to_cpu(indication->status_type)) {
3027         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3028                 netdev_info(usbdev->net, "radio state indication: %i\n",
3029                             le32_to_cpu(indication->u.radio_status));
3030                 return;
3031
3032         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3033                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3034                             le32_to_cpu(indication->u.media_stream_mode));
3035                 return;
3036
3037         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3038                 rndis_wlan_auth_indication(usbdev, indication, len);
3039                 return;
3040
3041         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3042                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3043                 return;
3044
3045         default:
3046                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3047                             le32_to_cpu(indication->status_type));
3048         }
3049 }
3050
3051 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3052 {
3053         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3054         struct rndis_indicate *msg = ind;
3055
3056         switch (le32_to_cpu(msg->status)) {
3057         case RNDIS_STATUS_MEDIA_CONNECT:
3058                 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3059                         /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3060                          * "media connect" indications which confuses driver
3061                          * and userspace to think that device is
3062                          * roaming/reassociating when it isn't.
3063                          */
3064                         netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3065                         return;
3066                 }
3067
3068                 usbnet_pause_rx(usbdev);
3069
3070                 netdev_info(usbdev->net, "media connect\n");
3071
3072                 /* queue work to avoid recursive calls into rndis_command */
3073                 set_bit(WORK_LINK_UP, &priv->work_pending);
3074                 queue_work(priv->workqueue, &priv->work);
3075                 break;
3076
3077         case RNDIS_STATUS_MEDIA_DISCONNECT:
3078                 netdev_info(usbdev->net, "media disconnect\n");
3079
3080                 /* queue work to avoid recursive calls into rndis_command */
3081                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3082                 queue_work(priv->workqueue, &priv->work);
3083                 break;
3084
3085         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3086                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3087                 break;
3088
3089         default:
3090                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3091                             le32_to_cpu(msg->status));
3092                 break;
3093         }
3094 }
3095
3096 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3097 {
3098         struct {
3099                 __le32  num_items;
3100                 __le32  items[8];
3101         } networks_supported;
3102         struct ndis_80211_capability caps;
3103         int len, retval, i, n;
3104         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3105
3106         /* determine supported modes */
3107         len = sizeof(networks_supported);
3108         retval = rndis_query_oid(usbdev,
3109                                  RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3110                                  &networks_supported, &len);
3111         if (!retval) {
3112                 n = le32_to_cpu(networks_supported.num_items);
3113                 if (n > 8)
3114                         n = 8;
3115                 for (i = 0; i < n; i++) {
3116                         switch (le32_to_cpu(networks_supported.items[i])) {
3117                         case NDIS_80211_TYPE_FREQ_HOP:
3118                         case NDIS_80211_TYPE_DIRECT_SEQ:
3119                                 priv->caps |= CAP_MODE_80211B;
3120                                 break;
3121                         case NDIS_80211_TYPE_OFDM_A:
3122                                 priv->caps |= CAP_MODE_80211A;
3123                                 break;
3124                         case NDIS_80211_TYPE_OFDM_G:
3125                                 priv->caps |= CAP_MODE_80211G;
3126                                 break;
3127                         }
3128                 }
3129         }
3130
3131         /* get device 802.11 capabilities, number of PMKIDs */
3132         len = sizeof(caps);
3133         retval = rndis_query_oid(usbdev,
3134                                  RNDIS_OID_802_11_CAPABILITY,
3135                                  &caps, &len);
3136         if (!retval) {
3137                 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3138                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3139                                 le32_to_cpu(caps.length),
3140                                 le32_to_cpu(caps.version),
3141                                 le32_to_cpu(caps.num_pmkids),
3142                                 le32_to_cpu(caps.num_auth_encr_pair));
3143                 wiphy->max_num_pmkids = le32_to_cpu(caps.num_pmkids);
3144         } else
3145                 wiphy->max_num_pmkids = 0;
3146
3147         return retval;
3148 }
3149
3150 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3151 {
3152         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3153         enum nl80211_cqm_rssi_threshold_event event;
3154         int thold, hyst, last_event;
3155
3156         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3157                 return;
3158         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3159                 return;
3160
3161         last_event = priv->last_cqm_event_rssi;
3162         thold = priv->cqm_rssi_thold;
3163         hyst = priv->cqm_rssi_hyst;
3164
3165         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3166                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3167         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3168                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3169         else
3170                 return;
3171
3172         priv->last_cqm_event_rssi = rssi;
3173         cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3174 }
3175
3176 #define DEVICE_POLLER_JIFFIES (HZ)
3177 static void rndis_device_poller(struct work_struct *work)
3178 {
3179         struct rndis_wlan_private *priv =
3180                 container_of(work, struct rndis_wlan_private,
3181                                                         dev_poller_work.work);
3182         struct usbnet *usbdev = priv->usbdev;
3183         __le32 rssi, tmp;
3184         int len, ret, j;
3185         int update_jiffies = DEVICE_POLLER_JIFFIES;
3186         void *buf;
3187
3188         /* Only check/do workaround when connected. Calling is_associated()
3189          * also polls device with rndis_command() and catches for media link
3190          * indications.
3191          */
3192         if (!is_associated(usbdev)) {
3193                 /* Workaround bad scanning in BCM4320a devices with active
3194                  * background scanning when not associated.
3195                  */
3196                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3197                     !priv->scan_request) {
3198                         /* Get previous scan results */
3199                         rndis_check_bssid_list(usbdev, NULL, NULL);
3200
3201                         /* Initiate new scan */
3202                         rndis_start_bssid_list_scan(usbdev);
3203                 }
3204
3205                 goto end;
3206         }
3207
3208         len = sizeof(rssi);
3209         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3210                               &rssi, &len);
3211         if (ret == 0) {
3212                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3213                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3214         }
3215
3216         netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3217                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3218
3219         /* Workaround transfer stalls on poor quality links.
3220          * TODO: find right way to fix these stalls (as stalls do not happen
3221          * with ndiswrapper/windows driver). */
3222         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3223                 /* Decrease stats worker interval to catch stalls.
3224                  * faster. Faster than 400-500ms causes packet loss,
3225                  * Slower doesn't catch stalls fast enough.
3226                  */
3227                 j = msecs_to_jiffies(priv->param_workaround_interval);
3228                 if (j > DEVICE_POLLER_JIFFIES)
3229                         j = DEVICE_POLLER_JIFFIES;
3230                 else if (j <= 0)
3231                         j = 1;
3232                 update_jiffies = j;
3233
3234                 /* Send scan OID. Use of both OIDs is required to get device
3235                  * working.
3236                  */
3237                 tmp = cpu_to_le32(1);
3238                 rndis_set_oid(usbdev,
3239                               RNDIS_OID_802_11_BSSID_LIST_SCAN,
3240                               &tmp, sizeof(tmp));
3241
3242                 len = CONTROL_BUFFER_SIZE;
3243                 buf = kmalloc(len, GFP_KERNEL);
3244                 if (!buf)
3245                         goto end;
3246
3247                 rndis_query_oid(usbdev,
3248                                 RNDIS_OID_802_11_BSSID_LIST,
3249                                 buf, &len);
3250                 kfree(buf);
3251         }
3252
3253 end:
3254         if (update_jiffies >= HZ)
3255                 update_jiffies = round_jiffies_relative(update_jiffies);
3256         else {
3257                 j = round_jiffies_relative(update_jiffies);
3258                 if (abs(j - update_jiffies) <= 10)
3259                         update_jiffies = j;
3260         }
3261
3262         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3263                                                                 update_jiffies);
3264 }
3265
3266 /*
3267  * driver/device initialization
3268  */
3269 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3270 {
3271         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3272
3273         priv->device_type = device_type;
3274
3275         priv->param_country[0] = modparam_country[0];
3276         priv->param_country[1] = modparam_country[1];
3277         priv->param_country[2] = 0;
3278         priv->param_frameburst   = modparam_frameburst;
3279         priv->param_afterburner  = modparam_afterburner;
3280         priv->param_power_save   = modparam_power_save;
3281         priv->param_power_output = modparam_power_output;
3282         priv->param_roamtrigger  = modparam_roamtrigger;
3283         priv->param_roamdelta    = modparam_roamdelta;
3284
3285         priv->param_country[0] = toupper(priv->param_country[0]);
3286         priv->param_country[1] = toupper(priv->param_country[1]);
3287         /* doesn't support EU as country code, use FI instead */
3288         if (!strcmp(priv->param_country, "EU"))
3289                 strcpy(priv->param_country, "FI");
3290
3291         if (priv->param_power_save < 0)
3292                 priv->param_power_save = 0;
3293         else if (priv->param_power_save > 2)
3294                 priv->param_power_save = 2;
3295
3296         if (priv->param_power_output < 0)
3297                 priv->param_power_output = 0;
3298         else if (priv->param_power_output > 3)
3299                 priv->param_power_output = 3;
3300
3301         if (priv->param_roamtrigger < -80)
3302                 priv->param_roamtrigger = -80;
3303         else if (priv->param_roamtrigger > -60)
3304                 priv->param_roamtrigger = -60;
3305
3306         if (priv->param_roamdelta < 0)
3307                 priv->param_roamdelta = 0;
3308         else if (priv->param_roamdelta > 2)
3309                 priv->param_roamdelta = 2;
3310
3311         if (modparam_workaround_interval < 0)
3312                 priv->param_workaround_interval = 500;
3313         else
3314                 priv->param_workaround_interval = modparam_workaround_interval;
3315 }
3316
3317 static int unknown_early_init(struct usbnet *usbdev)
3318 {
3319         /* copy module parameters for unknown so that iwconfig reports txpower
3320          * and workaround parameter is copied to private structure correctly.
3321          */
3322         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3323
3324         /* This is unknown device, so do not try set configuration parameters.
3325          */
3326
3327         return 0;
3328 }
3329
3330 static int bcm4320a_early_init(struct usbnet *usbdev)
3331 {
3332         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3333          * and workaround parameter is copied to private structure correctly.
3334          */
3335         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3336
3337         /* bcm4320a doesn't handle configuration parameters well. Try
3338          * set any and you get partially zeroed mac and broken device.
3339          */
3340
3341         return 0;
3342 }
3343
3344 static int bcm4320b_early_init(struct usbnet *usbdev)
3345 {
3346         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3347         char buf[8];
3348
3349         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3350
3351         /* Early initialization settings, setting these won't have effect
3352          * if called after generic_rndis_bind().
3353          */
3354
3355         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3356         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3357                                         priv->param_frameburst ? "1" : "0");
3358         rndis_set_config_parameter_str(usbdev, "Afterburner",
3359                                         priv->param_afterburner ? "1" : "0");
3360         sprintf(buf, "%d", priv->param_power_save);
3361         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3362         sprintf(buf, "%d", priv->param_power_output);
3363         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3364         sprintf(buf, "%d", priv->param_roamtrigger);
3365         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3366         sprintf(buf, "%d", priv->param_roamdelta);
3367         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3368
3369         return 0;
3370 }
3371
3372 /* same as rndis_netdev_ops but with local multicast handler */
3373 static const struct net_device_ops rndis_wlan_netdev_ops = {
3374         .ndo_open               = usbnet_open,
3375         .ndo_stop               = usbnet_stop,
3376         .ndo_start_xmit         = usbnet_start_xmit,
3377         .ndo_tx_timeout         = usbnet_tx_timeout,
3378         .ndo_get_stats64        = dev_get_tstats64,
3379         .ndo_set_mac_address    = eth_mac_addr,
3380         .ndo_validate_addr      = eth_validate_addr,
3381         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3382 };
3383
3384 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3385 {
3386         struct wiphy *wiphy;
3387         struct rndis_wlan_private *priv;
3388         int retval, len;
3389         __le32 tmp;
3390
3391         /* allocate wiphy and rndis private data
3392          * NOTE: We only support a single virtual interface, so wiphy
3393          * and wireless_dev are somewhat synonymous for this device.
3394          */
3395         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3396         if (!wiphy)
3397                 return -ENOMEM;
3398
3399         priv = wiphy_priv(wiphy);
3400         usbdev->net->ieee80211_ptr = &priv->wdev;
3401         priv->wdev.wiphy = wiphy;
3402         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3403
3404         /* These have to be initialized before calling generic_rndis_bind().
3405          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3406          */
3407         usbdev->driver_priv = priv;
3408         priv->usbdev = usbdev;
3409
3410         mutex_init(&priv->command_lock);
3411
3412         /* because rndis_command() sleeps we need to use workqueue */
3413         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3414         if (!priv->workqueue) {
3415                 wiphy_free(wiphy);
3416                 return -ENOMEM;
3417         }
3418         INIT_WORK(&priv->work, rndis_wlan_worker);
3419         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3420         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3421
3422         /* try bind rndis_host */
3423         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3424         if (retval < 0)
3425                 goto fail;
3426
3427         /* generic_rndis_bind set packet filter to multicast_all+
3428          * promisc mode which doesn't work well for our devices (device
3429          * picks up rssi to closest station instead of to access point).
3430          *
3431          * rndis_host wants to avoid all OID as much as possible
3432          * so do promisc/multicast handling in rndis_wlan.
3433          */
3434         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3435
3436         tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3437         retval = rndis_set_oid(usbdev,
3438                                RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3439                                &tmp, sizeof(tmp));
3440
3441         len = sizeof(tmp);
3442         retval = rndis_query_oid(usbdev,
3443                                  RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3444                                  &tmp, &len);
3445         priv->multicast_size = le32_to_cpu(tmp);
3446         if (retval < 0 || priv->multicast_size < 0)
3447                 priv->multicast_size = 0;
3448         if (priv->multicast_size > 0)
3449                 usbdev->net->flags |= IFF_MULTICAST;
3450         else
3451                 usbdev->net->flags &= ~IFF_MULTICAST;
3452
3453         /* fill-out wiphy structure and register w/ cfg80211 */
3454         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3455         wiphy->privid = rndis_wiphy_privid;
3456         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3457                                         | BIT(NL80211_IFTYPE_ADHOC);
3458         wiphy->max_scan_ssids = 1;
3459
3460         /* TODO: fill-out band/encr information based on priv->caps */
3461         rndis_wlan_get_caps(usbdev, wiphy);
3462
3463         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3464         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3465         priv->band.channels = priv->channels;
3466         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3467         priv->band.bitrates = priv->rates;
3468         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3469         wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3470         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3471
3472         memcpy(priv->cipher_suites, rndis_cipher_suites,
3473                                                 sizeof(rndis_cipher_suites));
3474         wiphy->cipher_suites = priv->cipher_suites;
3475         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3476
3477         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3478
3479         if (wiphy_register(wiphy)) {
3480                 retval = -ENODEV;
3481                 goto fail;
3482         }
3483
3484         set_default_iw_params(usbdev);
3485
3486         priv->power_mode = -1;
3487
3488         /* set default rts/frag */
3489         rndis_set_wiphy_params(wiphy,
3490                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3491
3492         /* turn radio off on init */
3493         priv->radio_on = false;
3494         disassociate(usbdev, false);
3495         netif_carrier_off(usbdev->net);
3496
3497         return 0;
3498
3499 fail:
3500         cancel_delayed_work_sync(&priv->dev_poller_work);
3501         cancel_delayed_work_sync(&priv->scan_work);
3502         cancel_work_sync(&priv->work);
3503         destroy_workqueue(priv->workqueue);
3504
3505         wiphy_free(wiphy);
3506         return retval;
3507 }
3508
3509 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3510 {
3511         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3512
3513         /* turn radio off */
3514         disassociate(usbdev, false);
3515
3516         cancel_delayed_work_sync(&priv->dev_poller_work);
3517         cancel_delayed_work_sync(&priv->scan_work);
3518         cancel_work_sync(&priv->work);
3519         destroy_workqueue(priv->workqueue);
3520
3521         rndis_unbind(usbdev, intf);
3522
3523         wiphy_unregister(priv->wdev.wiphy);
3524         wiphy_free(priv->wdev.wiphy);
3525 }
3526
3527 static int rndis_wlan_reset(struct usbnet *usbdev)
3528 {
3529         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3530         int retval;
3531
3532         netdev_dbg(usbdev->net, "%s()\n", __func__);
3533
3534         retval = rndis_reset(usbdev);
3535         if (retval)
3536                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3537
3538         /* rndis_reset cleared multicast list, so restore here.
3539            (set_multicast_list() also turns on current packet filter) */
3540         set_multicast_list(usbdev);
3541
3542         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3543                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3544
3545         return deauthenticate(usbdev);
3546 }
3547
3548 static int rndis_wlan_stop(struct usbnet *usbdev)
3549 {
3550         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3551         int retval;
3552         __le32 filter;
3553
3554         netdev_dbg(usbdev->net, "%s()\n", __func__);
3555
3556         retval = disassociate(usbdev, false);
3557
3558         priv->work_pending = 0;
3559         cancel_delayed_work_sync(&priv->dev_poller_work);
3560         cancel_delayed_work_sync(&priv->scan_work);
3561         cancel_work_sync(&priv->work);
3562         flush_workqueue(priv->workqueue);
3563
3564         if (priv->scan_request) {
3565                 struct cfg80211_scan_info info = {
3566                         .aborted = true,
3567                 };
3568
3569                 cfg80211_scan_done(priv->scan_request, &info);
3570                 priv->scan_request = NULL;
3571         }
3572
3573         /* Set current packet filter zero to block receiving data packets from
3574            device. */
3575         filter = 0;
3576         rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3577                                                                 sizeof(filter));
3578
3579         return retval;
3580 }
3581
3582 static const struct driver_info bcm4320b_info = {
3583         .description =  "Wireless RNDIS device, BCM4320b based",
3584         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3585                                 FLAG_AVOID_UNLINK_URBS,
3586         .bind =         rndis_wlan_bind,
3587         .unbind =       rndis_wlan_unbind,
3588         .status =       rndis_status,
3589         .rx_fixup =     rndis_rx_fixup,
3590         .tx_fixup =     rndis_tx_fixup,
3591         .reset =        rndis_wlan_reset,
3592         .stop =         rndis_wlan_stop,
3593         .early_init =   bcm4320b_early_init,
3594         .indication =   rndis_wlan_indication,
3595 };
3596
3597 static const struct driver_info bcm4320a_info = {
3598         .description =  "Wireless RNDIS device, BCM4320a based",
3599         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3600                                 FLAG_AVOID_UNLINK_URBS,
3601         .bind =         rndis_wlan_bind,
3602         .unbind =       rndis_wlan_unbind,
3603         .status =       rndis_status,
3604         .rx_fixup =     rndis_rx_fixup,
3605         .tx_fixup =     rndis_tx_fixup,
3606         .reset =        rndis_wlan_reset,
3607         .stop =         rndis_wlan_stop,
3608         .early_init =   bcm4320a_early_init,
3609         .indication =   rndis_wlan_indication,
3610 };
3611
3612 static const struct driver_info rndis_wlan_info = {
3613         .description =  "Wireless RNDIS device",
3614         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3615                                 FLAG_AVOID_UNLINK_URBS,
3616         .bind =         rndis_wlan_bind,
3617         .unbind =       rndis_wlan_unbind,
3618         .status =       rndis_status,
3619         .rx_fixup =     rndis_rx_fixup,
3620         .tx_fixup =     rndis_tx_fixup,
3621         .reset =        rndis_wlan_reset,
3622         .stop =         rndis_wlan_stop,
3623         .early_init =   unknown_early_init,
3624         .indication =   rndis_wlan_indication,
3625 };
3626
3627 /*-------------------------------------------------------------------------*/
3628
3629 static const struct usb_device_id products [] = {
3630 #define RNDIS_MASTER_INTERFACE \
3631         .bInterfaceClass        = USB_CLASS_COMM, \
3632         .bInterfaceSubClass     = 2 /* ACM */, \
3633         .bInterfaceProtocol     = 0x0ff
3634
3635 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3636  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3637  */
3638 {
3639         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3640                           | USB_DEVICE_ID_MATCH_DEVICE,
3641         .idVendor               = 0x0411,
3642         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3643         RNDIS_MASTER_INTERFACE,
3644         .driver_info            = (unsigned long) &bcm4320b_info,
3645 }, {
3646         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3647                           | USB_DEVICE_ID_MATCH_DEVICE,
3648         .idVendor               = 0x0baf,
3649         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3650         RNDIS_MASTER_INTERFACE,
3651         .driver_info            = (unsigned long) &bcm4320b_info,
3652 }, {
3653         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3654                           | USB_DEVICE_ID_MATCH_DEVICE,
3655         .idVendor               = 0x050d,
3656         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3657         RNDIS_MASTER_INTERFACE,
3658         .driver_info            = (unsigned long) &bcm4320b_info,
3659 }, {
3660         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3661                           | USB_DEVICE_ID_MATCH_DEVICE,
3662         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3663         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3664         RNDIS_MASTER_INTERFACE,
3665         .driver_info            = (unsigned long) &bcm4320b_info,
3666 }, {
3667         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3668                           | USB_DEVICE_ID_MATCH_DEVICE,
3669         .idVendor               = 0x13b1,
3670         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3671         RNDIS_MASTER_INTERFACE,
3672         .driver_info            = (unsigned long) &bcm4320b_info,
3673 }, {
3674         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3675                           | USB_DEVICE_ID_MATCH_DEVICE,
3676         .idVendor               = 0x13b1,
3677         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3678         RNDIS_MASTER_INTERFACE,
3679         .driver_info            = (unsigned long) &bcm4320b_info,
3680 }, {
3681         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3682                           | USB_DEVICE_ID_MATCH_DEVICE,
3683         .idVendor               = 0x0b05,
3684         .idProduct              = 0x1717,       /* Asus WL169gE */
3685         RNDIS_MASTER_INTERFACE,
3686         .driver_info            = (unsigned long) &bcm4320b_info,
3687 }, {
3688         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3689                           | USB_DEVICE_ID_MATCH_DEVICE,
3690         .idVendor               = 0x0a5c,
3691         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3692         RNDIS_MASTER_INTERFACE,
3693         .driver_info            = (unsigned long) &bcm4320b_info,
3694 }, {
3695         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3696                           | USB_DEVICE_ID_MATCH_DEVICE,
3697         .idVendor               = 0x1690,
3698         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3699         RNDIS_MASTER_INTERFACE,
3700         .driver_info            = (unsigned long) &bcm4320b_info,
3701 },
3702 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3703  * parameters available, hardware probably contain older firmware version with
3704  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3705  */
3706 {
3707         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3708                           | USB_DEVICE_ID_MATCH_DEVICE,
3709         .idVendor               = 0x13b1,
3710         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3711         RNDIS_MASTER_INTERFACE,
3712         .driver_info            = (unsigned long) &bcm4320a_info,
3713 }, {
3714         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3715                           | USB_DEVICE_ID_MATCH_DEVICE,
3716         .idVendor               = 0x0baf,
3717         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3718         RNDIS_MASTER_INTERFACE,
3719         .driver_info            = (unsigned long) &bcm4320a_info,
3720 }, {
3721         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3722                           | USB_DEVICE_ID_MATCH_DEVICE,
3723         .idVendor               = 0x0411,
3724         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3725         RNDIS_MASTER_INTERFACE,
3726         .driver_info            = (unsigned long) &bcm4320a_info,
3727 },
3728 /* Generic Wireless RNDIS devices that we don't have exact
3729  * idVendor/idProduct/chip yet.
3730  */
3731 {
3732         /* RNDIS is MSFT's un-official variant of CDC ACM */
3733         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3734         .driver_info = (unsigned long) &rndis_wlan_info,
3735 }, {
3736         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3737         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3738         .driver_info = (unsigned long) &rndis_wlan_info,
3739 },
3740         { },            // END
3741 };
3742 MODULE_DEVICE_TABLE(usb, products);
3743
3744 static struct usb_driver rndis_wlan_driver = {
3745         .name =         "rndis_wlan",
3746         .id_table =     products,
3747         .probe =        usbnet_probe,
3748         .disconnect =   usbnet_disconnect,
3749         .suspend =      usbnet_suspend,
3750         .resume =       usbnet_resume,
3751         .disable_hub_initiated_lpm = 1,
3752 };
3753
3754 module_usb_driver(rndis_wlan_driver);
3755
3756 MODULE_AUTHOR("Bjorge Dijkstra");
3757 MODULE_AUTHOR("Jussi Kivilinna");
3758 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3759 MODULE_LICENSE("GPL");
3760