drivers/net/wireless/rndis_wlan.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Driver for RNDIS based wireless USB devices.
   4  *
   5  * Copyright (C) 2007 by Bjorge Dijkstra <[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                 struct ndis_80211_auth_request          auth_request[0];
 213                 struct ndis_80211_pmkid_cand_list       cand_list;
 214         } u;
 215 } __packed;
 216
 217 struct ndis_80211_ssid {
 218         __le32 length;
 219         u8 essid[NDIS_802_11_LENGTH_SSID];
 220 } __packed;
 221
 222 struct ndis_80211_conf_freq_hop {
 223         __le32 length;
 224         __le32 hop_pattern;
 225         __le32 hop_set;
 226         __le32 dwell_time;
 227 } __packed;
 228
 229 struct ndis_80211_conf {
 230         __le32 length;
 231         __le32 beacon_period;
 232         __le32 atim_window;
 233         __le32 ds_config;
 234         struct ndis_80211_conf_freq_hop fh_config;
 235 } __packed;
 236
 237 struct ndis_80211_bssid_ex {
 238         __le32 length;
 239         u8 mac[ETH_ALEN];
 240         u8 padding[2];
 241         struct ndis_80211_ssid ssid;
 242         __le32 privacy;
 243         __le32 rssi;
 244         __le32 net_type;
 245         struct ndis_80211_conf config;
 246         __le32 net_infra;
 247         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 248         __le32 ie_length;
 249         u8 ies[];
 250 } __packed;
 251
 252 struct ndis_80211_bssid_list_ex {
 253         __le32 num_items;
 254         struct ndis_80211_bssid_ex bssid[];
 255 } __packed;
 256
 257 struct ndis_80211_fixed_ies {
 258         u8 timestamp[8];
 259         __le16 beacon_interval;
 260         __le16 capabilities;
 261 } __packed;
 262
 263 struct ndis_80211_wep_key {
 264         __le32 size;
 265         __le32 index;
 266         __le32 length;
 267         u8 material[32];
 268 } __packed;
 269
 270 struct ndis_80211_key {
 271         __le32 size;
 272         __le32 index;
 273         __le32 length;
 274         u8 bssid[ETH_ALEN];
 275         u8 padding[6];
 276         u8 rsc[8];
 277         u8 material[32];
 278 } __packed;
 279
 280 struct ndis_80211_remove_key {
 281         __le32 size;
 282         __le32 index;
 283         u8 bssid[ETH_ALEN];
 284         u8 padding[2];
 285 } __packed;
 286
 287 struct ndis_config_param {
 288         __le32 name_offs;
 289         __le32 name_length;
 290         __le32 type;
 291         __le32 value_offs;
 292         __le32 value_length;
 293 } __packed;
 294
 295 struct ndis_80211_assoc_info {
 296         __le32 length;
 297         __le16 req_ies;
 298         struct req_ie {
 299                 __le16 capa;
 300                 __le16 listen_interval;
 301                 u8 cur_ap_address[ETH_ALEN];
 302         } req_ie;
 303         __le32 req_ie_length;
 304         __le32 offset_req_ies;
 305         __le16 resp_ies;
 306         struct resp_ie {
 307                 __le16 capa;
 308                 __le16 status_code;
 309                 __le16 assoc_id;
 310         } resp_ie;
 311         __le32 resp_ie_length;
 312         __le32 offset_resp_ies;
 313 } __packed;
 314
 315 struct ndis_80211_capability {
 316         __le32 length;
 317         __le32 version;
 318         __le32 num_pmkids;
 319         __le32 num_auth_encr_pair;
 320 } __packed;
 321
 322 struct ndis_80211_bssid_info {
 323         u8 bssid[ETH_ALEN];
 324         u8 pmkid[16];
 325 } __packed;
 326
 327 struct ndis_80211_pmkid {
 328         __le32 length;
 329         __le32 bssid_info_count;
 330         struct ndis_80211_bssid_info bssid_info[];
 331 } __packed;
 332
 333 /*
 334  *  private data
 335  */
 336 #define CAP_MODE_80211A         1
 337 #define CAP_MODE_80211B         2
 338 #define CAP_MODE_80211G         4
 339 #define CAP_MODE_MASK           7
 340
 341 #define WORK_LINK_UP            0
 342 #define WORK_LINK_DOWN          1
 343 #define WORK_SET_MULTICAST_LIST 2
 344
 345 #define RNDIS_WLAN_ALG_NONE     0
 346 #define RNDIS_WLAN_ALG_WEP      (1<<0)
 347 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
 348 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
 349
 350 #define RNDIS_WLAN_NUM_KEYS             4
 351 #define RNDIS_WLAN_KEY_MGMT_NONE        0
 352 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 353 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 354
 355 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 356
 357 static const struct ieee80211_channel rndis_channels[] = {
 358         { .center_freq = 2412 },
 359         { .center_freq = 2417 },
 360         { .center_freq = 2422 },
 361         { .center_freq = 2427 },
 362         { .center_freq = 2432 },
 363         { .center_freq = 2437 },
 364         { .center_freq = 2442 },
 365         { .center_freq = 2447 },
 366         { .center_freq = 2452 },
 367         { .center_freq = 2457 },
 368         { .center_freq = 2462 },
 369         { .center_freq = 2467 },
 370         { .center_freq = 2472 },
 371         { .center_freq = 2484 },
 372 };
 373
 374 static const struct ieee80211_rate rndis_rates[] = {
 375         { .bitrate = 10 },
 376         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 377         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 378         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 379         { .bitrate = 60 },
 380         { .bitrate = 90 },
 381         { .bitrate = 120 },
 382         { .bitrate = 180 },
 383         { .bitrate = 240 },
 384         { .bitrate = 360 },
 385         { .bitrate = 480 },
 386         { .bitrate = 540 }
 387 };
 388
 389 static const u32 rndis_cipher_suites[] = {
 390         WLAN_CIPHER_SUITE_WEP40,
 391         WLAN_CIPHER_SUITE_WEP104,
 392         WLAN_CIPHER_SUITE_TKIP,
 393         WLAN_CIPHER_SUITE_CCMP,
 394 };
 395
 396 struct rndis_wlan_encr_key {
 397         int len;
 398         u32 cipher;
 399         u8 material[32];
 400         u8 bssid[ETH_ALEN];
 401         bool pairwise;
 402         bool tx_key;
 403 };
 404
 405 /* RNDIS device private data */
 406 struct rndis_wlan_private {
 407         struct usbnet *usbdev;
 408
 409         struct wireless_dev wdev;
 410
 411         struct cfg80211_scan_request *scan_request;
 412
 413         struct workqueue_struct *workqueue;
 414         struct delayed_work dev_poller_work;
 415         struct delayed_work scan_work;
 416         struct work_struct work;
 417         struct mutex command_lock;
 418         unsigned long work_pending;
 419         int last_qual;
 420         s32 cqm_rssi_thold;
 421         u32 cqm_rssi_hyst;
 422         int last_cqm_event_rssi;
 423
 424         struct ieee80211_supported_band band;
 425         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 426         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 427         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 428
 429         int device_type;
 430         int caps;
 431         int multicast_size;
 432
 433         /* module parameters */
 434         char param_country[4];
 435         int  param_frameburst;
 436         int  param_afterburner;
 437         int  param_power_save;
 438         int  param_power_output;
 439         int  param_roamtrigger;
 440         int  param_roamdelta;
 441         u32  param_workaround_interval;
 442
 443         /* hardware state */
 444         bool radio_on;
 445         int power_mode;
 446         int infra_mode;
 447         bool connected;
 448         u8 bssid[ETH_ALEN];
 449         u32 current_command_oid;
 450
 451         /* encryption stuff */
 452         u8 encr_tx_key_index;
 453         struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
 454         int  wpa_version;
 455
 456         u8 command_buffer[COMMAND_BUFFER_SIZE];
 457 };
 458
 459 /*
 460  * cfg80211 ops
 461  */
 462 static int rndis_change_virtual_intf(struct wiphy *wiphy,
 463                                         struct net_device *dev,
 464                                         enum nl80211_iftype type,
 465                                         struct vif_params *params);
 466
 467 static int rndis_scan(struct wiphy *wiphy,
 468                         struct cfg80211_scan_request *request);
 469
 470 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 471
 472 static int rndis_set_tx_power(struct wiphy *wiphy,
 473                               struct wireless_dev *wdev,
 474                               enum nl80211_tx_power_setting type,
 475                               int mbm);
 476 static int rndis_get_tx_power(struct wiphy *wiphy,
 477                               struct wireless_dev *wdev,
 478                               int *dbm);
 479
 480 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 481                                 struct cfg80211_connect_params *sme);
 482
 483 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 484                                 u16 reason_code);
 485
 486 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 487                                         struct cfg80211_ibss_params *params);
 488
 489 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 490
 491 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 492                          u8 key_index, bool pairwise, const u8 *mac_addr,
 493                          struct key_params *params);
 494
 495 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 496                          u8 key_index, bool pairwise, const u8 *mac_addr);
 497
 498 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 499                                  u8 key_index, bool unicast, bool multicast);
 500
 501 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 502                              const u8 *mac, struct station_info *sinfo);
 503
 504 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 505                                int idx, u8 *mac, struct station_info *sinfo);
 506
 507 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 508                                 struct cfg80211_pmksa *pmksa);
 509
 510 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 511                                 struct cfg80211_pmksa *pmksa);
 512
 513 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 514
 515 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 516                                 bool enabled, int timeout);
 517
 518 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 519                                         struct net_device *dev,
 520                                         s32 rssi_thold, u32 rssi_hyst);
 521
 522 static const struct cfg80211_ops rndis_config_ops = {
 523         .change_virtual_intf = rndis_change_virtual_intf,
 524         .scan = rndis_scan,
 525         .set_wiphy_params = rndis_set_wiphy_params,
 526         .set_tx_power = rndis_set_tx_power,
 527         .get_tx_power = rndis_get_tx_power,
 528         .connect = rndis_connect,
 529         .disconnect = rndis_disconnect,
 530         .join_ibss = rndis_join_ibss,
 531         .leave_ibss = rndis_leave_ibss,
 532         .add_key = rndis_add_key,
 533         .del_key = rndis_del_key,
 534         .set_default_key = rndis_set_default_key,
 535         .get_station = rndis_get_station,
 536         .dump_station = rndis_dump_station,
 537         .set_pmksa = rndis_set_pmksa,
 538         .del_pmksa = rndis_del_pmksa,
 539         .flush_pmksa = rndis_flush_pmksa,
 540         .set_power_mgmt = rndis_set_power_mgmt,
 541         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 542 };
 543
 544 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 545
 546
 547 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 548 {
 549         return (struct rndis_wlan_private *)dev->driver_priv;
 550 }
 551
 552 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 553 {
 554         switch (priv->param_power_output) {
 555         default:
 556         case 3:
 557                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 558         case 2:
 559                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 560         case 1:
 561                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 562         case 0:
 563                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 564         }
 565 }
 566
 567 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 568 {
 569         int cipher = priv->encr_keys[idx].cipher;
 570
 571         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 572                 cipher == WLAN_CIPHER_SUITE_TKIP);
 573 }
 574
 575 static int rndis_cipher_to_alg(u32 cipher)
 576 {
 577         switch (cipher) {
 578         default:
 579                 return RNDIS_WLAN_ALG_NONE;
 580         case WLAN_CIPHER_SUITE_WEP40:
 581         case WLAN_CIPHER_SUITE_WEP104:
 582                 return RNDIS_WLAN_ALG_WEP;
 583         case WLAN_CIPHER_SUITE_TKIP:
 584                 return RNDIS_WLAN_ALG_TKIP;
 585         case WLAN_CIPHER_SUITE_CCMP:
 586                 return RNDIS_WLAN_ALG_CCMP;
 587         }
 588 }
 589
 590 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 591 {
 592         switch (akm_suite) {
 593         default:
 594                 return RNDIS_WLAN_KEY_MGMT_NONE;
 595         case WLAN_AKM_SUITE_8021X:
 596                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 597         case WLAN_AKM_SUITE_PSK:
 598                 return RNDIS_WLAN_KEY_MGMT_PSK;
 599         }
 600 }
 601
 602 #ifdef DEBUG
 603 static const char *oid_to_string(u32 oid)
 604 {
 605         switch (oid) {
 606 #define OID_STR(oid) case oid: return(#oid)
 607                 /* from rndis_host.h */
 608                 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 609                 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 610                 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 611                 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 612
 613                 /* from rndis_wlan.c */
 614                 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 615                 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 616
 617                 OID_STR(RNDIS_OID_GEN_XMIT_OK);
 618                 OID_STR(RNDIS_OID_GEN_RCV_OK);
 619                 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 620                 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 621                 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 622
 623                 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
 624                 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
 625                 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
 626
 627                 OID_STR(RNDIS_OID_802_11_BSSID);
 628                 OID_STR(RNDIS_OID_802_11_SSID);
 629                 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
 630                 OID_STR(RNDIS_OID_802_11_ADD_WEP);
 631                 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
 632                 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
 633                 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
 634                 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
 635                 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
 636                 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
 637                 OID_STR(RNDIS_OID_802_11_ADD_KEY);
 638                 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
 639                 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
 640                 OID_STR(RNDIS_OID_802_11_CAPABILITY);
 641                 OID_STR(RNDIS_OID_802_11_PMKID);
 642                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
 643                 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
 644                 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
 645                 OID_STR(RNDIS_OID_802_11_RSSI);
 646                 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
 647                 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
 648                 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
 649                 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
 650                 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
 651                 OID_STR(RNDIS_OID_802_11_POWER_MODE);
 652                 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
 653 #undef OID_STR
 654         }
 655
 656         return "?";
 657 }
 658 #else
 659 static const char *oid_to_string(u32 oid)
 660 {
 661         return "?";
 662 }
 663 #endif
 664
 665 /* translate error code */
 666 static int rndis_error_status(__le32 rndis_status)
 667 {
 668         int ret = -EINVAL;
 669         switch (le32_to_cpu(rndis_status)) {
 670         case RNDIS_STATUS_SUCCESS:
 671                 ret = 0;
 672                 break;
 673         case RNDIS_STATUS_FAILURE:
 674         case RNDIS_STATUS_INVALID_DATA:
 675                 ret = -EINVAL;
 676                 break;
 677         case RNDIS_STATUS_NOT_SUPPORTED:
 678                 ret = -EOPNOTSUPP;
 679                 break;
 680         case RNDIS_STATUS_ADAPTER_NOT_READY:
 681         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 682                 ret = -EBUSY;
 683                 break;
 684         }
 685         return ret;
 686 }
 687
 688 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 689 {
 690         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 691         union {
 692                 void                    *buf;
 693                 struct rndis_msg_hdr    *header;
 694                 struct rndis_query      *get;
 695                 struct rndis_query_c    *get_c;
 696         } u;
 697         int ret, buflen;
 698         int resplen, respoffs, copylen;
 699
 700         buflen = *len + sizeof(*u.get);
 701         if (buflen < CONTROL_BUFFER_SIZE)
 702                 buflen = CONTROL_BUFFER_SIZE;
 703
 704         if (buflen > COMMAND_BUFFER_SIZE) {
 705                 u.buf = kmalloc(buflen, GFP_KERNEL);
 706                 if (!u.buf)
 707                         return -ENOMEM;
 708         } else {
 709                 u.buf = priv->command_buffer;
 710         }
 711
 712         mutex_lock(&priv->command_lock);
 713
 714         memset(u.get, 0, sizeof *u.get);
 715         u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 716         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 717         u.get->oid = cpu_to_le32(oid);
 718
 719         priv->current_command_oid = oid;
 720         ret = rndis_command(dev, u.header, buflen);
 721         priv->current_command_oid = 0;
 722         if (ret < 0)
 723                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 724                            __func__, oid_to_string(oid), ret,
 725                            le32_to_cpu(u.get_c->status));
 726
 727         if (ret == 0) {
 728                 resplen = le32_to_cpu(u.get_c->len);
 729                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 730
 731                 if (respoffs > buflen) {
 732                         /* Device returned data offset outside buffer, error. */
 733                         netdev_dbg(dev->net, "%s(%s): received invalid "
 734                                 "data offset: %d > %d\n", __func__,
 735                                 oid_to_string(oid), respoffs, buflen);
 736
 737                         ret = -EINVAL;
 738                         goto exit_unlock;
 739                 }
 740
 741                 if ((resplen + respoffs) > buflen) {
 742                         /* Device would have returned more data if buffer would
 743                          * have been big enough. Copy just the bits that we got.
 744                          */
 745                         copylen = buflen - respoffs;
 746                 } else {
 747                         copylen = resplen;
 748                 }
 749
 750                 if (copylen > *len)
 751                         copylen = *len;
 752
 753                 memcpy(data, u.buf + respoffs, copylen);
 754
 755                 *len = resplen;
 756
 757                 ret = rndis_error_status(u.get_c->status);
 758                 if (ret < 0)
 759                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 760                                    __func__, oid_to_string(oid),
 761                                    le32_to_cpu(u.get_c->status), ret);
 762         }
 763
 764 exit_unlock:
 765         mutex_unlock(&priv->command_lock);
 766
 767         if (u.buf != priv->command_buffer)
 768                 kfree(u.buf);
 769         return ret;
 770 }
 771
 772 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 773                          int len)
 774 {
 775         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 776         union {
 777                 void                    *buf;
 778                 struct rndis_msg_hdr    *header;
 779                 struct rndis_set        *set;
 780                 struct rndis_set_c      *set_c;
 781         } u;
 782         int ret, buflen;
 783
 784         buflen = len + sizeof(*u.set);
 785         if (buflen < CONTROL_BUFFER_SIZE)
 786                 buflen = CONTROL_BUFFER_SIZE;
 787
 788         if (buflen > COMMAND_BUFFER_SIZE) {
 789                 u.buf = kmalloc(buflen, GFP_KERNEL);
 790                 if (!u.buf)
 791                         return -ENOMEM;
 792         } else {
 793                 u.buf = priv->command_buffer;
 794         }
 795
 796         mutex_lock(&priv->command_lock);
 797
 798         memset(u.set, 0, sizeof *u.set);
 799         u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 800         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 801         u.set->oid = cpu_to_le32(oid);
 802         u.set->len = cpu_to_le32(len);
 803         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 804         u.set->handle = cpu_to_le32(0);
 805         memcpy(u.buf + sizeof(*u.set), data, len);
 806
 807         priv->current_command_oid = oid;
 808         ret = rndis_command(dev, u.header, buflen);
 809         priv->current_command_oid = 0;
 810         if (ret < 0)
 811                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 812                            __func__, oid_to_string(oid), ret,
 813                            le32_to_cpu(u.set_c->status));
 814
 815         if (ret == 0) {
 816                 ret = rndis_error_status(u.set_c->status);
 817
 818                 if (ret < 0)
 819                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 820                                    __func__, oid_to_string(oid),
 821                                    le32_to_cpu(u.set_c->status), ret);
 822         }
 823
 824         mutex_unlock(&priv->command_lock);
 825
 826         if (u.buf != priv->command_buffer)
 827                 kfree(u.buf);
 828         return ret;
 829 }
 830
 831 static int rndis_reset(struct usbnet *usbdev)
 832 {
 833         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 834         struct rndis_reset *reset;
 835         int ret;
 836
 837         mutex_lock(&priv->command_lock);
 838
 839         reset = (void *)priv->command_buffer;
 840         memset(reset, 0, sizeof(*reset));
 841         reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 842         reset->msg_len = cpu_to_le32(sizeof(*reset));
 843         priv->current_command_oid = 0;
 844         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 845
 846         mutex_unlock(&priv->command_lock);
 847
 848         if (ret < 0)
 849                 return ret;
 850         return 0;
 851 }
 852
 853 /*
 854  * Specs say that we can only set config parameters only soon after device
 855  * initialization.
 856  *   value_type: 0 = u32, 2 = unicode string
 857  */
 858 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 859                                                 int value_type, void *value)
 860 {
 861         struct ndis_config_param *infobuf;
 862         int value_len, info_len, param_len, ret, i;
 863         __le16 *unibuf;
 864         __le32 *dst_value;
 865
 866         if (value_type == 0)
 867                 value_len = sizeof(__le32);
 868         else if (value_type == 2)
 869                 value_len = strlen(value) * sizeof(__le16);
 870         else
 871                 return -EINVAL;
 872
 873         param_len = strlen(param) * sizeof(__le16);
 874         info_len = sizeof(*infobuf) + param_len + value_len;
 875
 876 #ifdef DEBUG
 877         info_len += 12;
 878 #endif
 879         infobuf = kmalloc(info_len, GFP_KERNEL);
 880         if (!infobuf)
 881                 return -ENOMEM;
 882
 883 #ifdef DEBUG
 884         info_len -= 12;
 885         /* extra 12 bytes are for padding (debug output) */
 886         memset(infobuf, 0xCC, info_len + 12);
 887 #endif
 888
 889         if (value_type == 2)
 890                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 891                            param, (u8 *)value);
 892         else
 893                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 894                            param, *(u32 *)value);
 895
 896         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 897         infobuf->name_length = cpu_to_le32(param_len);
 898         infobuf->type = cpu_to_le32(value_type);
 899         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 900         infobuf->value_length = cpu_to_le32(value_len);
 901
 902         /* simple string to unicode string conversion */
 903         unibuf = (void *)infobuf + sizeof(*infobuf);
 904         for (i = 0; i < param_len / sizeof(__le16); i++)
 905                 unibuf[i] = cpu_to_le16(param[i]);
 906
 907         if (value_type == 2) {
 908                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 909                 for (i = 0; i < value_len / sizeof(__le16); i++)
 910                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 911         } else {
 912                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 913                 *dst_value = cpu_to_le32(*(u32 *)value);
 914         }
 915
 916 #ifdef DEBUG
 917         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 918         for (i = 0; i < info_len; i += 12) {
 919                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 920                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 921                            cpu_to_be32(tmp[0]),
 922                            cpu_to_be32(tmp[1]),
 923                            cpu_to_be32(tmp[2]));
 924         }
 925 #endif
 926
 927         ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 928                                                         infobuf, info_len);
 929         if (ret != 0)
 930                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 931                            ret);
 932
 933         kfree(infobuf);
 934         return ret;
 935 }
 936
 937 static int rndis_set_config_parameter_str(struct usbnet *dev,
 938                                                 char *param, char *value)
 939 {
 940         return rndis_set_config_parameter(dev, param, 2, value);
 941 }
 942
 943 /*
 944  * data conversion functions
 945  */
 946 static int level_to_qual(int level)
 947 {
 948         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 949         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 950 }
 951
 952 /*
 953  * common functions
 954  */
 955 static int set_infra_mode(struct usbnet *usbdev, int mode);
 956 static void restore_keys(struct usbnet *usbdev);
 957 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 958                                         bool *matched);
 959
 960 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 961 {
 962         __le32 tmp;
 963
 964         /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 965         tmp = cpu_to_le32(1);
 966         return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 967                                                         sizeof(tmp));
 968 }
 969
 970 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 971 {
 972         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 973         int ret;
 974
 975         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 976                             ssid, sizeof(*ssid));
 977         if (ret < 0) {
 978                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 979                 return ret;
 980         }
 981         if (ret == 0) {
 982                 priv->radio_on = true;
 983                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
 984         }
 985
 986         return ret;
 987 }
 988
 989 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
 990 {
 991         int ret;
 992
 993         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
 994                             bssid, ETH_ALEN);
 995         if (ret < 0) {
 996                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
 997                             bssid, ret);
 998                 return ret;
 999         }
1000
1001         return ret;
1002 }
1003
1004 static int clear_bssid(struct usbnet *usbdev)
1005 {
1006         static const u8 broadcast_mac[ETH_ALEN] = {
1007                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1008         };
1009
1010         return set_bssid(usbdev, broadcast_mac);
1011 }
1012
1013 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1014 {
1015         int ret, len;
1016
1017         len = ETH_ALEN;
1018         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1019                               bssid, &len);
1020
1021         if (ret != 0)
1022                 eth_zero_addr(bssid);
1023
1024         return ret;
1025 }
1026
1027 static int get_association_info(struct usbnet *usbdev,
1028                         struct ndis_80211_assoc_info *info, int len)
1029 {
1030         return rndis_query_oid(usbdev,
1031                         RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1032                         info, &len);
1033 }
1034
1035 static bool is_associated(struct usbnet *usbdev)
1036 {
1037         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1038         u8 bssid[ETH_ALEN];
1039
1040         if (!priv->radio_on)
1041                 return false;
1042
1043         return (get_bssid(usbdev, bssid) == 0 && !is_zero_ether_addr(bssid));
1044 }
1045
1046 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1047 {
1048         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1049         struct ndis_80211_ssid ssid;
1050         int i, ret = 0;
1051
1052         if (priv->radio_on) {
1053                 ret = rndis_set_oid(usbdev,
1054                                 RNDIS_OID_802_11_DISASSOCIATE,
1055                                 NULL, 0);
1056                 if (ret == 0) {
1057                         priv->radio_on = false;
1058                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1059                                    __func__);
1060
1061                         if (reset_ssid)
1062                                 msleep(100);
1063                 }
1064         }
1065
1066         /* disassociate causes radio to be turned off; if reset_ssid
1067          * is given, set random ssid to enable radio */
1068         if (reset_ssid) {
1069                 /* Set device to infrastructure mode so we don't get ad-hoc
1070                  * 'media connect' indications with the random ssid.
1071                  */
1072                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1073
1074                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1075                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1076                 ssid.essid[0] = 0x1;
1077                 ssid.essid[1] = 0xff;
1078                 for (i = 2; i < sizeof(ssid.essid); i++)
1079                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1080                 ret = set_essid(usbdev, &ssid);
1081         }
1082         return ret;
1083 }
1084
1085 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1086                                 enum nl80211_auth_type auth_type, int keymgmt)
1087 {
1088         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1089         __le32 tmp;
1090         int auth_mode, ret;
1091
1092         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1093                    __func__, wpa_version, auth_type, keymgmt);
1094
1095         if (wpa_version & NL80211_WPA_VERSION_2) {
1096                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1097                         auth_mode = NDIS_80211_AUTH_WPA2;
1098                 else
1099                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1100         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1101                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1102                         auth_mode = NDIS_80211_AUTH_WPA;
1103                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1104                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1105                 else
1106                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1107         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1108                 auth_mode = NDIS_80211_AUTH_SHARED;
1109         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1110                 auth_mode = NDIS_80211_AUTH_OPEN;
1111         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1112                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1113         else
1114                 return -ENOTSUPP;
1115
1116         tmp = cpu_to_le32(auth_mode);
1117         ret = rndis_set_oid(usbdev,
1118                             RNDIS_OID_802_11_AUTHENTICATION_MODE,
1119                             &tmp, sizeof(tmp));
1120         if (ret != 0) {
1121                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1122                             ret);
1123                 return ret;
1124         }
1125
1126         priv->wpa_version = wpa_version;
1127
1128         return 0;
1129 }
1130
1131 static int set_priv_filter(struct usbnet *usbdev)
1132 {
1133         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1134         __le32 tmp;
1135
1136         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1137                    __func__, priv->wpa_version);
1138
1139         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1140             priv->wpa_version & NL80211_WPA_VERSION_1)
1141                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1142         else
1143                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1144
1145         return rndis_set_oid(usbdev,
1146                              RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1147                              sizeof(tmp));
1148 }
1149
1150 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1151 {
1152         __le32 tmp;
1153         int encr_mode, ret;
1154
1155         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1156                    __func__, pairwise, groupwise);
1157
1158         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1159                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1160         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1161                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1162         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1163                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1164         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1165                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1166         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1167                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1168         else
1169                 encr_mode = NDIS_80211_ENCR_DISABLED;
1170
1171         tmp = cpu_to_le32(encr_mode);
1172         ret = rndis_set_oid(usbdev,
1173                         RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1174                         sizeof(tmp));
1175         if (ret != 0) {
1176                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1177                             ret);
1178                 return ret;
1179         }
1180
1181         return 0;
1182 }
1183
1184 static int set_infra_mode(struct usbnet *usbdev, int mode)
1185 {
1186         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1187         __le32 tmp;
1188         int ret;
1189
1190         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1191                    __func__, priv->infra_mode);
1192
1193         tmp = cpu_to_le32(mode);
1194         ret = rndis_set_oid(usbdev,
1195                             RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1196                             &tmp, sizeof(tmp));
1197         if (ret != 0) {
1198                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1199                             ret);
1200                 return ret;
1201         }
1202
1203         /* NDIS drivers clear keys when infrastructure mode is
1204          * changed. But Linux tools assume otherwise. So set the
1205          * keys */
1206         restore_keys(usbdev);
1207
1208         priv->infra_mode = mode;
1209         return 0;
1210 }
1211
1212 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1213 {
1214         __le32 tmp;
1215
1216         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1217
1218         if (rts_threshold == -1 || rts_threshold > 2347)
1219                 rts_threshold = 2347;
1220
1221         tmp = cpu_to_le32(rts_threshold);
1222         return rndis_set_oid(usbdev,
1223                              RNDIS_OID_802_11_RTS_THRESHOLD,
1224                              &tmp, sizeof(tmp));
1225 }
1226
1227 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1228 {
1229         __le32 tmp;
1230
1231         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1232
1233         if (frag_threshold < 256 || frag_threshold > 2346)
1234                 frag_threshold = 2346;
1235
1236         tmp = cpu_to_le32(frag_threshold);
1237         return rndis_set_oid(usbdev,
1238                         RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1239                         &tmp, sizeof(tmp));
1240 }
1241
1242 static void set_default_iw_params(struct usbnet *usbdev)
1243 {
1244         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1245         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1246                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1247         set_priv_filter(usbdev);
1248         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1249 }
1250
1251 static int deauthenticate(struct usbnet *usbdev)
1252 {
1253         int ret;
1254
1255         ret = disassociate(usbdev, true);
1256         set_default_iw_params(usbdev);
1257         return ret;
1258 }
1259
1260 static int set_channel(struct usbnet *usbdev, int channel)
1261 {
1262         struct ndis_80211_conf config;
1263         unsigned int dsconfig;
1264         int len, ret;
1265
1266         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1267
1268         /* this OID is valid only when not associated */
1269         if (is_associated(usbdev))
1270                 return 0;
1271
1272         dsconfig = 1000 *
1273                 ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1274
1275         len = sizeof(config);
1276         ret = rndis_query_oid(usbdev,
1277                         RNDIS_OID_802_11_CONFIGURATION,
1278                         &config, &len);
1279         if (ret < 0) {
1280                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1281                            __func__);
1282                 return ret;
1283         }
1284
1285         config.ds_config = cpu_to_le32(dsconfig);
1286         ret = rndis_set_oid(usbdev,
1287                         RNDIS_OID_802_11_CONFIGURATION,
1288                         &config, sizeof(config));
1289
1290         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1291
1292         return ret;
1293 }
1294
1295 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1296                                                      u32 *beacon_period)
1297 {
1298         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1299         struct ieee80211_channel *channel;
1300         struct ndis_80211_conf config;
1301         int len, ret;
1302
1303         /* Get channel and beacon interval */
1304         len = sizeof(config);
1305         ret = rndis_query_oid(usbdev,
1306                         RNDIS_OID_802_11_CONFIGURATION,
1307                         &config, &len);
1308         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1309                                 __func__, ret);
1310         if (ret < 0)
1311                 return NULL;
1312
1313         channel = ieee80211_get_channel(priv->wdev.wiphy,
1314                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1315         if (!channel)
1316                 return NULL;
1317
1318         if (beacon_period)
1319                 *beacon_period = le32_to_cpu(config.beacon_period);
1320         return channel;
1321 }
1322
1323 /* index must be 0 - N, as per NDIS  */
1324 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1325                                                                 u8 index)
1326 {
1327         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1328         struct ndis_80211_wep_key ndis_key;
1329         u32 cipher;
1330         int ret;
1331
1332         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1333                    __func__, index, key_len);
1334
1335         if (index >= RNDIS_WLAN_NUM_KEYS)
1336                 return -EINVAL;
1337
1338         if (key_len == 5)
1339                 cipher = WLAN_CIPHER_SUITE_WEP40;
1340         else if (key_len == 13)
1341                 cipher = WLAN_CIPHER_SUITE_WEP104;
1342         else
1343                 return -EINVAL;
1344
1345         memset(&ndis_key, 0, sizeof(ndis_key));
1346
1347         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1348         ndis_key.length = cpu_to_le32(key_len);
1349         ndis_key.index = cpu_to_le32(index);
1350         memcpy(&ndis_key.material, key, key_len);
1351
1352         if (index == priv->encr_tx_key_index) {
1353                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1354                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1355                                                         RNDIS_WLAN_ALG_NONE);
1356                 if (ret)
1357                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1358                                     ret);
1359         }
1360
1361         ret = rndis_set_oid(usbdev,
1362                         RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1363                         sizeof(ndis_key));
1364         if (ret != 0) {
1365                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1366                             index + 1, ret);
1367                 return ret;
1368         }
1369
1370         priv->encr_keys[index].len = key_len;
1371         priv->encr_keys[index].cipher = cipher;
1372         memcpy(&priv->encr_keys[index].material, key, key_len);
1373         eth_broadcast_addr(priv->encr_keys[index].bssid);
1374
1375         return 0;
1376 }
1377
1378 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1379                         u8 index, const u8 *addr, const u8 *rx_seq,
1380                         int seq_len, u32 cipher, __le32 flags)
1381 {
1382         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1383         struct ndis_80211_key ndis_key;
1384         bool is_addr_ok;
1385         int ret;
1386
1387         if (index >= RNDIS_WLAN_NUM_KEYS) {
1388                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1389                            __func__, index);
1390                 return -EINVAL;
1391         }
1392         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1393                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1394                            __func__, key_len);
1395                 return -EINVAL;
1396         }
1397         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1398                 if (!rx_seq || seq_len <= 0) {
1399                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1400                                    __func__);
1401                         return -EINVAL;
1402                 }
1403                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1404                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1405                         return -EINVAL;
1406                 }
1407         }
1408
1409         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1410                                         !is_broadcast_ether_addr(addr);
1411         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1412                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1413                            __func__, addr);
1414                 return -EINVAL;
1415         }
1416
1417         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1418                    __func__, index,
1419                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1420                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1421                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1422
1423         memset(&ndis_key, 0, sizeof(ndis_key));
1424
1425         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1426                                 sizeof(ndis_key.material) + key_len);
1427         ndis_key.length = cpu_to_le32(key_len);
1428         ndis_key.index = cpu_to_le32(index) | flags;
1429
1430         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1431                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1432                  * different order than NDIS spec, so swap the order here. */
1433                 memcpy(ndis_key.material, key, 16);
1434                 memcpy(ndis_key.material + 16, key + 24, 8);
1435                 memcpy(ndis_key.material + 24, key + 16, 8);
1436         } else
1437                 memcpy(ndis_key.material, key, key_len);
1438
1439         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1440                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1441
1442         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1443                 /* pairwise key */
1444                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1445         } else {
1446                 /* group key */
1447                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1448                         eth_broadcast_addr(ndis_key.bssid);
1449                 else
1450                         get_bssid(usbdev, ndis_key.bssid);
1451         }
1452
1453         ret = rndis_set_oid(usbdev,
1454                         RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1455                         le32_to_cpu(ndis_key.size));
1456         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1457                    __func__, ret);
1458         if (ret != 0)
1459                 return ret;
1460
1461         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1462         priv->encr_keys[index].len = key_len;
1463         priv->encr_keys[index].cipher = cipher;
1464         memcpy(&priv->encr_keys[index].material, key, key_len);
1465         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1466                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1467         else
1468                 eth_broadcast_addr(priv->encr_keys[index].bssid);
1469
1470         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1471                 priv->encr_tx_key_index = index;
1472
1473         return 0;
1474 }
1475
1476 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1477 {
1478         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1479         struct rndis_wlan_encr_key key;
1480
1481         if (is_wpa_key(priv, key_idx))
1482                 return 0;
1483
1484         key = priv->encr_keys[key_idx];
1485
1486         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1487
1488         if (key.len == 0)
1489                 return 0;
1490
1491         return add_wep_key(usbdev, key.material, key.len, key_idx);
1492 }
1493
1494 static void restore_keys(struct usbnet *usbdev)
1495 {
1496         int i;
1497
1498         for (i = 0; i < 4; i++)
1499                 restore_key(usbdev, i);
1500 }
1501
1502 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1503 {
1504         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1505 }
1506
1507 /* remove_key is for both wep and wpa */
1508 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1509 {
1510         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1511         struct ndis_80211_remove_key remove_key;
1512         __le32 keyindex;
1513         bool is_wpa;
1514         int ret;
1515
1516         if (index >= RNDIS_WLAN_NUM_KEYS)
1517                 return -ENOENT;
1518
1519         if (priv->encr_keys[index].len == 0)
1520                 return 0;
1521
1522         is_wpa = is_wpa_key(priv, index);
1523
1524         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1525                    __func__, index, is_wpa ? "wpa" : "wep",
1526                    priv->encr_keys[index].len);
1527
1528         clear_key(priv, index);
1529
1530         if (is_wpa) {
1531                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1532                 remove_key.index = cpu_to_le32(index);
1533                 if (bssid) {
1534                         /* pairwise key */
1535                         if (!is_broadcast_ether_addr(bssid))
1536                                 remove_key.index |=
1537                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1538                         memcpy(remove_key.bssid, bssid,
1539                                         sizeof(remove_key.bssid));
1540                 } else
1541                         memset(remove_key.bssid, 0xff,
1542                                                 sizeof(remove_key.bssid));
1543
1544                 ret = rndis_set_oid(usbdev,
1545                                 RNDIS_OID_802_11_REMOVE_KEY,
1546                                 &remove_key, sizeof(remove_key));
1547                 if (ret != 0)
1548                         return ret;
1549         } else {
1550                 keyindex = cpu_to_le32(index);
1551                 ret = rndis_set_oid(usbdev,
1552                                 RNDIS_OID_802_11_REMOVE_WEP,
1553                                 &keyindex, sizeof(keyindex));
1554                 if (ret != 0) {
1555                         netdev_warn(usbdev->net,
1556                                     "removing encryption key %d failed (%08X)\n",
1557                                     index, ret);
1558                         return ret;
1559                 }
1560         }
1561
1562         /* if it is transmit key, disable encryption */
1563         if (index == priv->encr_tx_key_index)
1564                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1565
1566         return 0;
1567 }
1568
1569 static void set_multicast_list(struct usbnet *usbdev)
1570 {
1571         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1572         struct netdev_hw_addr *ha;
1573         __le32 filter, basefilter;
1574         int ret;
1575         char *mc_addrs = NULL;
1576         int mc_count;
1577
1578         basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1579                                           RNDIS_PACKET_TYPE_BROADCAST);
1580
1581         if (usbdev->net->flags & IFF_PROMISC) {
1582                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1583                                       RNDIS_PACKET_TYPE_ALL_LOCAL);
1584         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1585                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1586         }
1587
1588         if (filter != basefilter)
1589                 goto set_filter;
1590
1591         /*
1592          * mc_list should be accessed holding the lock, so copy addresses to
1593          * local buffer first.
1594          */
1595         netif_addr_lock_bh(usbdev->net);
1596         mc_count = netdev_mc_count(usbdev->net);
1597         if (mc_count > priv->multicast_size) {
1598                 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1599         } else if (mc_count) {
1600                 int i = 0;
1601
1602                 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1603                 if (!mc_addrs) {
1604                         netif_addr_unlock_bh(usbdev->net);
1605                         return;
1606                 }
1607
1608                 netdev_for_each_mc_addr(ha, usbdev->net)
1609                         memcpy(mc_addrs + i++ * ETH_ALEN,
1610                                ha->addr, ETH_ALEN);
1611         }
1612         netif_addr_unlock_bh(usbdev->net);
1613
1614         if (filter != basefilter)
1615                 goto set_filter;
1616
1617         if (mc_count) {
1618                 ret = rndis_set_oid(usbdev,
1619                                 RNDIS_OID_802_3_MULTICAST_LIST,
1620                                 mc_addrs, mc_count * ETH_ALEN);
1621                 kfree(mc_addrs);
1622                 if (ret == 0)
1623                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1624                 else
1625                         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1626
1627                 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1628                            mc_count, priv->multicast_size, ret);
1629         }
1630
1631 set_filter:
1632         ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1633                                                         sizeof(filter));
1634         if (ret < 0) {
1635                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1636                             le32_to_cpu(filter));
1637         }
1638
1639         netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1640                    le32_to_cpu(filter), ret);
1641 }
1642
1643 #ifdef DEBUG
1644 static void debug_print_pmkids(struct usbnet *usbdev,
1645                                 struct ndis_80211_pmkid *pmkids,
1646                                 const char *func_str)
1647 {
1648         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1649         int i, len, count, max_pmkids, entry_len;
1650
1651         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1652         len = le32_to_cpu(pmkids->length);
1653         count = le32_to_cpu(pmkids->bssid_info_count);
1654
1655         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1656
1657         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1658                                 "%d)\n", func_str, count, len, entry_len);
1659
1660         if (count > max_pmkids)
1661                 count = max_pmkids;
1662
1663         for (i = 0; i < count; i++) {
1664                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1665
1666                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1667                                 "pmkid: %08X:%08X:%08X:%08X\n",
1668                                 func_str, pmkids->bssid_info[i].bssid,
1669                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1670                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1671         }
1672 }
1673 #else
1674 static void debug_print_pmkids(struct usbnet *usbdev,
1675                                 struct ndis_80211_pmkid *pmkids,
1676                                 const char *func_str)
1677 {
1678         return;
1679 }
1680 #endif
1681
1682 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1683 {
1684         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1685         struct ndis_80211_pmkid *pmkids;
1686         int len, ret, max_pmkids;
1687
1688         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1689         len = struct_size(pmkids, bssid_info, max_pmkids);
1690
1691         pmkids = kzalloc(len, GFP_KERNEL);
1692         if (!pmkids)
1693                 return ERR_PTR(-ENOMEM);
1694
1695         pmkids->length = cpu_to_le32(len);
1696         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1697
1698         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1699                         pmkids, &len);
1700         if (ret < 0) {
1701                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1702                                 " -> %d\n", __func__, len, max_pmkids, ret);
1703
1704                 kfree(pmkids);
1705                 return ERR_PTR(ret);
1706         }
1707
1708         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1709                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1710
1711         debug_print_pmkids(usbdev, pmkids, __func__);
1712
1713         return pmkids;
1714 }
1715
1716 static int set_device_pmkids(struct usbnet *usbdev,
1717                                 struct ndis_80211_pmkid *pmkids)
1718 {
1719         int ret, len, num_pmkids;
1720
1721         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1722         len = struct_size(pmkids, bssid_info, num_pmkids);
1723         pmkids->length = cpu_to_le32(len);
1724
1725         debug_print_pmkids(usbdev, pmkids, __func__);
1726
1727         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1728                             le32_to_cpu(pmkids->length));
1729         if (ret < 0) {
1730                 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1731                                 "\n", __func__, len, num_pmkids, ret);
1732         }
1733
1734         kfree(pmkids);
1735         return ret;
1736 }
1737
1738 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1739                                                 struct ndis_80211_pmkid *pmkids,
1740                                                 struct cfg80211_pmksa *pmksa,
1741                                                 int max_pmkids)
1742 {
1743         int i, err;
1744         unsigned int count;
1745
1746         count = le32_to_cpu(pmkids->bssid_info_count);
1747
1748         if (count > max_pmkids)
1749                 count = max_pmkids;
1750
1751         for (i = 0; i < count; i++)
1752                 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1753                                      pmksa->bssid))
1754                         break;
1755
1756         /* pmkid not found */
1757         if (i == count) {
1758                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1759                                         __func__, pmksa->bssid);
1760                 err = -ENOENT;
1761                 goto error;
1762         }
1763
1764         for (; i + 1 < count; i++)
1765                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1766
1767         count--;
1768         pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1769         pmkids->bssid_info_count = cpu_to_le32(count);
1770
1771         return pmkids;
1772 error:
1773         kfree(pmkids);
1774         return ERR_PTR(err);
1775 }
1776
1777 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1778                                                 struct ndis_80211_pmkid *pmkids,
1779                                                 struct cfg80211_pmksa *pmksa,
1780                                                 int max_pmkids)
1781 {
1782         struct ndis_80211_pmkid *new_pmkids;
1783         int i, err, newlen;
1784         unsigned int count;
1785
1786         count = le32_to_cpu(pmkids->bssid_info_count);
1787
1788         if (count > max_pmkids)
1789                 count = max_pmkids;
1790
1791         /* update with new pmkid */
1792         for (i = 0; i < count; i++) {
1793                 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1794                                       pmksa->bssid))
1795                         continue;
1796
1797                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1798                                                                 WLAN_PMKID_LEN);
1799
1800                 return pmkids;
1801         }
1802
1803         /* out of space, return error */
1804         if (i == max_pmkids) {
1805                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1806                 err = -ENOSPC;
1807                 goto error;
1808         }
1809
1810         /* add new pmkid */
1811         newlen = struct_size(pmkids, bssid_info, count + 1);
1812
1813         new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1814         if (!new_pmkids) {
1815                 err = -ENOMEM;
1816                 goto error;
1817         }
1818         pmkids = new_pmkids;
1819
1820         pmkids->length = cpu_to_le32(newlen);
1821         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1822
1823         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1824         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1825
1826         return pmkids;
1827 error:
1828         kfree(pmkids);
1829         return ERR_PTR(err);
1830 }
1831
1832 /*
1833  * cfg80211 ops
1834  */
1835 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1836                                         struct net_device *dev,
1837                                         enum nl80211_iftype type,
1838                                         struct vif_params *params)
1839 {
1840         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1841         struct usbnet *usbdev = priv->usbdev;
1842         int mode;
1843
1844         switch (type) {
1845         case NL80211_IFTYPE_ADHOC:
1846                 mode = NDIS_80211_INFRA_ADHOC;
1847                 break;
1848         case NL80211_IFTYPE_STATION:
1849                 mode = NDIS_80211_INFRA_INFRA;
1850                 break;
1851         default:
1852                 return -EINVAL;
1853         }
1854
1855         priv->wdev.iftype = type;
1856
1857         return set_infra_mode(usbdev, mode);
1858 }
1859
1860 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1861 {
1862         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1863         struct usbnet *usbdev = priv->usbdev;
1864         int err;
1865
1866         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1867                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1868                 if (err < 0)
1869                         return err;
1870         }
1871
1872         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1873                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1874                 if (err < 0)
1875                         return err;
1876         }
1877
1878         return 0;
1879 }
1880
1881 static int rndis_set_tx_power(struct wiphy *wiphy,
1882                               struct wireless_dev *wdev,
1883                               enum nl80211_tx_power_setting type,
1884                               int mbm)
1885 {
1886         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1887         struct usbnet *usbdev = priv->usbdev;
1888
1889         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1890                    __func__, type, mbm);
1891
1892         if (mbm < 0 || (mbm % 100))
1893                 return -ENOTSUPP;
1894
1895         /* Device doesn't support changing txpower after initialization, only
1896          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1897          * currently used.
1898          */
1899         if (type == NL80211_TX_POWER_AUTOMATIC ||
1900             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1901                 if (!priv->radio_on)
1902                         disassociate(usbdev, true); /* turn on radio */
1903
1904                 return 0;
1905         }
1906
1907         return -ENOTSUPP;
1908 }
1909
1910 static int rndis_get_tx_power(struct wiphy *wiphy,
1911                               struct wireless_dev *wdev,
1912                               int *dbm)
1913 {
1914         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1915         struct usbnet *usbdev = priv->usbdev;
1916
1917         *dbm = get_bcm4320_power_dbm(priv);
1918
1919         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1920
1921         return 0;
1922 }
1923
1924 #define SCAN_DELAY_JIFFIES (6 * HZ)
1925 static int rndis_scan(struct wiphy *wiphy,
1926                         struct cfg80211_scan_request *request)
1927 {
1928         struct net_device *dev = request->wdev->netdev;
1929         struct usbnet *usbdev = netdev_priv(dev);
1930         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1931         int ret;
1932         int delay = SCAN_DELAY_JIFFIES;
1933
1934         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1935
1936         /* Get current bssid list from device before new scan, as new scan
1937          * clears internal bssid list.
1938          */
1939         rndis_check_bssid_list(usbdev, NULL, NULL);
1940
1941         if (priv->scan_request && priv->scan_request != request)
1942                 return -EBUSY;
1943
1944         priv->scan_request = request;
1945
1946         ret = rndis_start_bssid_list_scan(usbdev);
1947         if (ret == 0) {
1948                 if (priv->device_type == RNDIS_BCM4320A)
1949                         delay = HZ;
1950
1951                 /* Wait before retrieving scan results from device */
1952                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1953         }
1954
1955         return ret;
1956 }
1957
1958 static bool rndis_bss_info_update(struct usbnet *usbdev,
1959                                   struct ndis_80211_bssid_ex *bssid)
1960 {
1961         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1962         struct ieee80211_channel *channel;
1963         struct cfg80211_bss *bss;
1964         s32 signal;
1965         u64 timestamp;
1966         u16 capability;
1967         u16 beacon_interval;
1968         struct ndis_80211_fixed_ies *fixed;
1969         int ie_len, bssid_len;
1970         u8 *ie;
1971
1972         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1973                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1974
1975         /* parse bssid structure */
1976         bssid_len = le32_to_cpu(bssid->length);
1977
1978         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1979                         sizeof(struct ndis_80211_fixed_ies))
1980                 return NULL;
1981
1982         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1983
1984         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1985         ie_len = min(bssid_len - (int)sizeof(*bssid),
1986                                         (int)le32_to_cpu(bssid->ie_length));
1987         ie_len -= sizeof(struct ndis_80211_fixed_ies);
1988         if (ie_len < 0)
1989                 return NULL;
1990
1991         /* extract data for cfg80211_inform_bss */
1992         channel = ieee80211_get_channel(priv->wdev.wiphy,
1993                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1994         if (!channel)
1995                 return NULL;
1996
1997         signal = level_to_qual(le32_to_cpu(bssid->rssi));
1998         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1999         capability = le16_to_cpu(fixed->capabilities);
2000         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2001
2002         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2003                                   CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2004                                   timestamp, capability, beacon_interval,
2005                                   ie, ie_len, signal, GFP_KERNEL);
2006         cfg80211_put_bss(priv->wdev.wiphy, bss);
2007
2008         return (bss != NULL);
2009 }
2010
2011 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2012                                         struct ndis_80211_bssid_ex *bssid,
2013                                         int *bssid_len, void *buf, int len)
2014 {
2015         void *buf_end, *bssid_end;
2016
2017         buf_end = (char *)buf + len;
2018         bssid_end = (char *)bssid + *bssid_len;
2019
2020         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2021                 *bssid_len = 0;
2022                 return NULL;
2023         } else {
2024                 bssid = (void *)((char *)bssid + *bssid_len);
2025                 *bssid_len = le32_to_cpu(bssid->length);
2026                 return bssid;
2027         }
2028 }
2029
2030 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2031                                   int bssid_len, void *buf, int len)
2032 {
2033         void *buf_end, *bssid_end;
2034
2035         if (!bssid || bssid_len <= 0 || bssid_len > len)
2036                 return false;
2037
2038         buf_end = (char *)buf + len;
2039         bssid_end = (char *)bssid + bssid_len;
2040
2041         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2042 }
2043
2044 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2045                                         bool *matched)
2046 {
2047         void *buf = NULL;
2048         struct ndis_80211_bssid_list_ex *bssid_list;
2049         struct ndis_80211_bssid_ex *bssid;
2050         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2051
2052         netdev_dbg(usbdev->net, "%s()\n", __func__);
2053
2054         len = CONTROL_BUFFER_SIZE;
2055 resize_buf:
2056         buf = kzalloc(len, GFP_KERNEL);
2057         if (!buf) {
2058                 ret = -ENOMEM;
2059                 goto out;
2060         }
2061
2062         /* BSSID-list might have got bigger last time we checked, keep
2063          * resizing until it won't get any bigger.
2064          */
2065         new_len = len;
2066         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2067                               buf, &new_len);
2068         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2069                 goto out;
2070
2071         if (new_len > len) {
2072                 len = new_len;
2073                 kfree(buf);
2074                 goto resize_buf;
2075         }
2076
2077         len = new_len;
2078
2079         bssid_list = buf;
2080         count = le32_to_cpu(bssid_list->num_items);
2081         real_count = 0;
2082         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2083
2084         bssid_len = 0;
2085         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2086
2087         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2088          * received 'num_items' and walking through full bssid buffer instead.
2089          */
2090         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2091                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2092                     matched) {
2093                         if (ether_addr_equal(bssid->mac, match_bssid))
2094                                 *matched = true;
2095                 }
2096
2097                 real_count++;
2098                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2099         }
2100
2101         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2102                                 " %d\n", __func__, count, real_count);
2103
2104 out:
2105         kfree(buf);
2106         return ret;
2107 }
2108
2109 static void rndis_get_scan_results(struct work_struct *work)
2110 {
2111         struct rndis_wlan_private *priv =
2112                 container_of(work, struct rndis_wlan_private, scan_work.work);
2113         struct usbnet *usbdev = priv->usbdev;
2114         struct cfg80211_scan_info info = {};
2115         int ret;
2116
2117         netdev_dbg(usbdev->net, "get_scan_results\n");
2118
2119         if (!priv->scan_request)
2120                 return;
2121
2122         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2123
2124         info.aborted = ret < 0;
2125         cfg80211_scan_done(priv->scan_request, &info);
2126
2127         priv->scan_request = NULL;
2128 }
2129
2130 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2131                                         struct cfg80211_connect_params *sme)
2132 {
2133         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2134         struct usbnet *usbdev = priv->usbdev;
2135         struct ieee80211_channel *channel = sme->channel;
2136         struct ndis_80211_ssid ssid;
2137         int pairwise = RNDIS_WLAN_ALG_NONE;
2138         int groupwise = RNDIS_WLAN_ALG_NONE;
2139         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2140         int length, i, ret, chan = -1;
2141
2142         if (channel)
2143                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2144
2145         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2146         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2147                 pairwise |=
2148                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2149
2150         if (sme->crypto.n_ciphers_pairwise > 0 &&
2151                         pairwise == RNDIS_WLAN_ALG_NONE) {
2152                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2153                 return -ENOTSUPP;
2154         }
2155
2156         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2157                 keymgmt |=
2158                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2159
2160         if (sme->crypto.n_akm_suites > 0 &&
2161                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2162                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2163                 return -ENOTSUPP;
2164         }
2165
2166         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2167                    sme->ssid, sme->bssid, chan,
2168                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2169                    groupwise, pairwise, keymgmt);
2170
2171         if (is_associated(usbdev))
2172                 disassociate(usbdev, false);
2173
2174         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2175         if (ret < 0) {
2176                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2177                            ret);
2178                 goto err_turn_radio_on;
2179         }
2180
2181         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2182                                                                 keymgmt);
2183         if (ret < 0) {
2184                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2185                            ret);
2186                 goto err_turn_radio_on;
2187         }
2188
2189         set_priv_filter(usbdev);
2190
2191         ret = set_encr_mode(usbdev, pairwise, groupwise);
2192         if (ret < 0) {
2193                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2194                            ret);
2195                 goto err_turn_radio_on;
2196         }
2197
2198         if (channel) {
2199                 ret = set_channel(usbdev, chan);
2200                 if (ret < 0) {
2201                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2202                                    ret);
2203                         goto err_turn_radio_on;
2204                 }
2205         }
2206
2207         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2208                 priv->encr_tx_key_index = sme->key_idx;
2209                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2210                 if (ret < 0) {
2211                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2212                                    ret, sme->key_len, sme->key_idx);
2213                         goto err_turn_radio_on;
2214                 }
2215         }
2216
2217         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2218                                 !is_broadcast_ether_addr(sme->bssid)) {
2219                 ret = set_bssid(usbdev, sme->bssid);
2220                 if (ret < 0) {
2221                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2222                                    ret);
2223                         goto err_turn_radio_on;
2224                 }
2225         } else
2226                 clear_bssid(usbdev);
2227
2228         length = sme->ssid_len;
2229         if (length > NDIS_802_11_LENGTH_SSID)
2230                 length = NDIS_802_11_LENGTH_SSID;
2231
2232         memset(&ssid, 0, sizeof(ssid));
2233         ssid.length = cpu_to_le32(length);
2234         memcpy(ssid.essid, sme->ssid, length);
2235
2236         /* Pause and purge rx queue, so we don't pass packets before
2237          * 'media connect'-indication.
2238          */
2239         usbnet_pause_rx(usbdev);
2240         usbnet_purge_paused_rxq(usbdev);
2241
2242         ret = set_essid(usbdev, &ssid);
2243         if (ret < 0)
2244                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2245         return ret;
2246
2247 err_turn_radio_on:
2248         disassociate(usbdev, true);
2249
2250         return ret;
2251 }
2252
2253 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2254                                                                 u16 reason_code)
2255 {
2256         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2257         struct usbnet *usbdev = priv->usbdev;
2258
2259         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2260
2261         priv->connected = false;
2262         eth_zero_addr(priv->bssid);
2263
2264         return deauthenticate(usbdev);
2265 }
2266
2267 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2268                                         struct cfg80211_ibss_params *params)
2269 {
2270         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2271         struct usbnet *usbdev = priv->usbdev;
2272         struct ieee80211_channel *channel = params->chandef.chan;
2273         struct ndis_80211_ssid ssid;
2274         enum nl80211_auth_type auth_type;
2275         int ret, alg, length, chan = -1;
2276
2277         if (channel)
2278                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2279
2280         /* TODO: How to handle ad-hoc encryption?
2281          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2282          * pre-shared for encryption (open/shared/wpa), is key set before
2283          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2284          */
2285         if (params->privacy) {
2286                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2287                 alg = RNDIS_WLAN_ALG_WEP;
2288         } else {
2289                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2290                 alg = RNDIS_WLAN_ALG_NONE;
2291         }
2292
2293         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2294                    params->ssid, params->bssid, chan, params->privacy);
2295
2296         if (is_associated(usbdev))
2297                 disassociate(usbdev, false);
2298
2299         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2300         if (ret < 0) {
2301                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2302                            ret);
2303                 goto err_turn_radio_on;
2304         }
2305
2306         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2307         if (ret < 0) {
2308                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2309                            ret);
2310                 goto err_turn_radio_on;
2311         }
2312
2313         set_priv_filter(usbdev);
2314
2315         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2316         if (ret < 0) {
2317                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2318                            ret);
2319                 goto err_turn_radio_on;
2320         }
2321
2322         if (channel) {
2323                 ret = set_channel(usbdev, chan);
2324                 if (ret < 0) {
2325                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2326                                    ret);
2327                         goto err_turn_radio_on;
2328                 }
2329         }
2330
2331         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2332                                 !is_broadcast_ether_addr(params->bssid)) {
2333                 ret = set_bssid(usbdev, params->bssid);
2334                 if (ret < 0) {
2335                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2336                                    ret);
2337                         goto err_turn_radio_on;
2338                 }
2339         } else
2340                 clear_bssid(usbdev);
2341
2342         length = params->ssid_len;
2343         if (length > NDIS_802_11_LENGTH_SSID)
2344                 length = NDIS_802_11_LENGTH_SSID;
2345
2346         memset(&ssid, 0, sizeof(ssid));
2347         ssid.length = cpu_to_le32(length);
2348         memcpy(ssid.essid, params->ssid, length);
2349
2350         /* Don't need to pause rx queue for ad-hoc. */
2351         usbnet_purge_paused_rxq(usbdev);
2352         usbnet_resume_rx(usbdev);
2353
2354         ret = set_essid(usbdev, &ssid);
2355         if (ret < 0)
2356                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2357                            ret);
2358         return ret;
2359
2360 err_turn_radio_on:
2361         disassociate(usbdev, true);
2362
2363         return ret;
2364 }
2365
2366 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2367 {
2368         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2369         struct usbnet *usbdev = priv->usbdev;
2370
2371         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2372
2373         priv->connected = false;
2374         eth_zero_addr(priv->bssid);
2375
2376         return deauthenticate(usbdev);
2377 }
2378
2379 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2380                          u8 key_index, bool pairwise, const u8 *mac_addr,
2381                          struct key_params *params)
2382 {
2383         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2384         struct usbnet *usbdev = priv->usbdev;
2385         __le32 flags;
2386
2387         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2388                    __func__, key_index, mac_addr, params->cipher);
2389
2390         switch (params->cipher) {
2391         case WLAN_CIPHER_SUITE_WEP40:
2392         case WLAN_CIPHER_SUITE_WEP104:
2393                 return add_wep_key(usbdev, params->key, params->key_len,
2394                                                                 key_index);
2395         case WLAN_CIPHER_SUITE_TKIP:
2396         case WLAN_CIPHER_SUITE_CCMP:
2397                 flags = 0;
2398
2399                 if (params->seq && params->seq_len > 0)
2400                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2401                 if (mac_addr)
2402                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2403                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2404
2405                 return add_wpa_key(usbdev, params->key, params->key_len,
2406                                 key_index, mac_addr, params->seq,
2407                                 params->seq_len, params->cipher, flags);
2408         default:
2409                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2410                            __func__, params->cipher);
2411                 return -ENOTSUPP;
2412         }
2413 }
2414
2415 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2416                          u8 key_index, bool pairwise, const u8 *mac_addr)
2417 {
2418         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2419         struct usbnet *usbdev = priv->usbdev;
2420
2421         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2422
2423         return remove_key(usbdev, key_index, mac_addr);
2424 }
2425
2426 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2427                                  u8 key_index, bool unicast, bool multicast)
2428 {
2429         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2430         struct usbnet *usbdev = priv->usbdev;
2431         struct rndis_wlan_encr_key key;
2432
2433         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2434
2435         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2436                 return -ENOENT;
2437
2438         priv->encr_tx_key_index = key_index;
2439
2440         if (is_wpa_key(priv, key_index))
2441                 return 0;
2442
2443         key = priv->encr_keys[key_index];
2444
2445         return add_wep_key(usbdev, key.material, key.len, key_index);
2446 }
2447
2448 static void rndis_fill_station_info(struct usbnet *usbdev,
2449                                                 struct station_info *sinfo)
2450 {
2451         __le32 linkspeed, rssi;
2452         int ret, len;
2453
2454         memset(sinfo, 0, sizeof(*sinfo));
2455
2456         len = sizeof(linkspeed);
2457         ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2458         if (ret == 0) {
2459                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2460                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2461         }
2462
2463         len = sizeof(rssi);
2464         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2465                               &rssi, &len);
2466         if (ret == 0) {
2467                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2468                 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2469         }
2470 }
2471
2472 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2473                              const u8 *mac, struct station_info *sinfo)
2474 {
2475         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2476         struct usbnet *usbdev = priv->usbdev;
2477
2478         if (!ether_addr_equal(priv->bssid, mac))
2479                 return -ENOENT;
2480
2481         rndis_fill_station_info(usbdev, sinfo);
2482
2483         return 0;
2484 }
2485
2486 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2487                                int idx, u8 *mac, struct station_info *sinfo)
2488 {
2489         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2490         struct usbnet *usbdev = priv->usbdev;
2491
2492         if (idx != 0)
2493                 return -ENOENT;
2494
2495         memcpy(mac, priv->bssid, ETH_ALEN);
2496
2497         rndis_fill_station_info(usbdev, sinfo);
2498
2499         return 0;
2500 }
2501
2502 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2503                                 struct cfg80211_pmksa *pmksa)
2504 {
2505         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2506         struct usbnet *usbdev = priv->usbdev;
2507         struct ndis_80211_pmkid *pmkids;
2508         u32 *tmp = (u32 *)pmksa->pmkid;
2509
2510         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2511                         pmksa->bssid,
2512                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2513                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2514
2515         pmkids = get_device_pmkids(usbdev);
2516         if (IS_ERR(pmkids)) {
2517                 /* couldn't read PMKID cache from device */
2518                 return PTR_ERR(pmkids);
2519         }
2520
2521         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2522         if (IS_ERR(pmkids)) {
2523                 /* not found, list full, etc */
2524                 return PTR_ERR(pmkids);
2525         }
2526
2527         return set_device_pmkids(usbdev, pmkids);
2528 }
2529
2530 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2531                                 struct cfg80211_pmksa *pmksa)
2532 {
2533         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2534         struct usbnet *usbdev = priv->usbdev;
2535         struct ndis_80211_pmkid *pmkids;
2536         u32 *tmp = (u32 *)pmksa->pmkid;
2537
2538         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2539                         pmksa->bssid,
2540                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2541                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2542
2543         pmkids = get_device_pmkids(usbdev);
2544         if (IS_ERR(pmkids)) {
2545                 /* Couldn't read PMKID cache from device */
2546                 return PTR_ERR(pmkids);
2547         }
2548
2549         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2550         if (IS_ERR(pmkids)) {
2551                 /* not found, etc */
2552                 return PTR_ERR(pmkids);
2553         }
2554
2555         return set_device_pmkids(usbdev, pmkids);
2556 }
2557
2558 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2559 {
2560         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2561         struct usbnet *usbdev = priv->usbdev;
2562         struct ndis_80211_pmkid pmkid;
2563
2564         netdev_dbg(usbdev->net, "%s()\n", __func__);
2565
2566         memset(&pmkid, 0, sizeof(pmkid));
2567
2568         pmkid.length = cpu_to_le32(sizeof(pmkid));
2569         pmkid.bssid_info_count = cpu_to_le32(0);
2570
2571         return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2572                              &pmkid, sizeof(pmkid));
2573 }
2574
2575 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2576                                 bool enabled, int timeout)
2577 {
2578         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2579         struct usbnet *usbdev = priv->usbdev;
2580         int power_mode;
2581         __le32 mode;
2582         int ret;
2583
2584         if (priv->device_type != RNDIS_BCM4320B)
2585                 return -ENOTSUPP;
2586
2587         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2588                                 enabled ? "enabled" : "disabled",
2589                                 timeout);
2590
2591         if (enabled)
2592                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2593         else
2594                 power_mode = NDIS_80211_POWER_MODE_CAM;
2595
2596         if (power_mode == priv->power_mode)
2597                 return 0;
2598
2599         priv->power_mode = power_mode;
2600
2601         mode = cpu_to_le32(power_mode);
2602         ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2603                             &mode, sizeof(mode));
2604
2605         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2606                                 __func__, ret);
2607
2608         return ret;
2609 }
2610
2611 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2612                                         struct net_device *dev,
2613                                         s32 rssi_thold, u32 rssi_hyst)
2614 {
2615         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2616
2617         priv->cqm_rssi_thold = rssi_thold;
2618         priv->cqm_rssi_hyst = rssi_hyst;
2619         priv->last_cqm_event_rssi = 0;
2620
2621         return 0;
2622 }
2623
2624 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2625                                            struct ndis_80211_assoc_info *info)
2626 {
2627         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2628         struct ieee80211_channel *channel;
2629         struct ndis_80211_ssid ssid;
2630         struct cfg80211_bss *bss;
2631         s32 signal;
2632         u64 timestamp;
2633         u16 capability;
2634         u32 beacon_period = 0;
2635         __le32 rssi;
2636         u8 ie_buf[34];
2637         int len, ret, ie_len;
2638
2639         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2640         len = sizeof(rssi);
2641         rssi = 0;
2642         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2643                               &rssi, &len);
2644         signal = level_to_qual(le32_to_cpu(rssi));
2645
2646         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2647                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2648                    level_to_qual(le32_to_cpu(rssi)));
2649
2650         /* Get AP capabilities */
2651         if (info) {
2652                 capability = le16_to_cpu(info->resp_ie.capa);
2653         } else {
2654                 /* Set atleast ESS/IBSS capability */
2655                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2656                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2657         }
2658
2659         /* Get channel and beacon interval */
2660         channel = get_current_channel(usbdev, &beacon_period);
2661         if (!channel) {
2662                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2663                                         __func__);
2664                 return;
2665         }
2666
2667         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2668         len = sizeof(ssid);
2669         memset(&ssid, 0, sizeof(ssid));
2670         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2671                               &ssid, &len);
2672         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2673                                 "'%.32s'\n", __func__, ret,
2674                                 le32_to_cpu(ssid.length), ssid.essid);
2675
2676         if (le32_to_cpu(ssid.length) > 32)
2677                 ssid.length = cpu_to_le32(32);
2678
2679         ie_buf[0] = WLAN_EID_SSID;
2680         ie_buf[1] = le32_to_cpu(ssid.length);
2681         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2682
2683         ie_len = le32_to_cpu(ssid.length) + 2;
2684
2685         /* no tsf */
2686         timestamp = 0;
2687
2688         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2689                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2690                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2691                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2692                 ssid.essid, signal);
2693
2694         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2695                                   CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2696                                   timestamp, capability, beacon_period,
2697                                   ie_buf, ie_len, signal, GFP_KERNEL);
2698         cfg80211_put_bss(priv->wdev.wiphy, bss);
2699 }
2700
2701 /*
2702  * workers, indication handlers, device poller
2703  */
2704 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2705 {
2706         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2707         struct ndis_80211_assoc_info *info = NULL;
2708         u8 bssid[ETH_ALEN];
2709         unsigned int resp_ie_len, req_ie_len;
2710         unsigned int offset;
2711         u8 *req_ie, *resp_ie;
2712         int ret;
2713         bool roamed = false;
2714         bool match_bss;
2715
2716         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2717                 /* received media connect indication while connected, either
2718                  * device reassociated with same AP or roamed to new. */
2719                 roamed = true;
2720         }
2721
2722         req_ie_len = 0;
2723         resp_ie_len = 0;
2724         req_ie = NULL;
2725         resp_ie = NULL;
2726
2727         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2728                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2729                 if (!info) {
2730                         /* No memory? Try resume work later */
2731                         set_bit(WORK_LINK_UP, &priv->work_pending);
2732                         queue_work(priv->workqueue, &priv->work);
2733                         return;
2734                 }
2735
2736                 /* Get association info IEs from device. */
2737                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2738                 if (!ret) {
2739                         req_ie_len = le32_to_cpu(info->req_ie_length);
2740                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2741                                 req_ie_len = CONTROL_BUFFER_SIZE;
2742                         if (req_ie_len != 0) {
2743                                 offset = le32_to_cpu(info->offset_req_ies);
2744
2745                                 if (offset > CONTROL_BUFFER_SIZE)
2746                                         offset = CONTROL_BUFFER_SIZE;
2747
2748                                 req_ie = (u8 *)info + offset;
2749
2750                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2751                                         req_ie_len =
2752                                                 CONTROL_BUFFER_SIZE - offset;
2753                         }
2754
2755                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2756                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2757                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2758                         if (resp_ie_len != 0) {
2759                                 offset = le32_to_cpu(info->offset_resp_ies);
2760
2761                                 if (offset > CONTROL_BUFFER_SIZE)
2762                                         offset = CONTROL_BUFFER_SIZE;
2763
2764                                 resp_ie = (u8 *)info + offset;
2765
2766                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2767                                         resp_ie_len =
2768                                                 CONTROL_BUFFER_SIZE - offset;
2769                         }
2770                 } else {
2771                         /* Since rndis_wlan_craft_connected_bss() might use info
2772                          * later and expects info to contain valid data if
2773                          * non-null, free info and set NULL here.
2774                          */
2775                         kfree(info);
2776                         info = NULL;
2777                 }
2778         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2779                 return;
2780
2781         ret = get_bssid(usbdev, bssid);
2782         if (ret < 0)
2783                 memset(bssid, 0, sizeof(bssid));
2784
2785         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2786                    bssid, roamed ? " roamed" : "");
2787
2788         /* Internal bss list in device should contain at least the currently
2789          * connected bss and we can get it to cfg80211 with
2790          * rndis_check_bssid_list().
2791          *
2792          * NDIS spec says: "If the device is associated, but the associated
2793          *  BSSID is not in its BSSID scan list, then the driver must add an
2794          *  entry for the BSSID at the end of the data that it returns in
2795          *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2796          *
2797          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2798          */
2799         match_bss = false;
2800         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2801
2802         if (!is_zero_ether_addr(bssid) && !match_bss) {
2803                 /* Couldn't get bss from device, we need to manually craft bss
2804                  * for cfg80211.
2805                  */
2806                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2807         }
2808
2809         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2810                 if (!roamed) {
2811                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2812                                                 req_ie_len, resp_ie,
2813                                                 resp_ie_len, 0, GFP_KERNEL);
2814                 } else {
2815                         struct cfg80211_roam_info roam_info = {
2816                                 .channel = get_current_channel(usbdev, NULL),
2817                                 .bssid = bssid,
2818                                 .req_ie = req_ie,
2819                                 .req_ie_len = req_ie_len,
2820                                 .resp_ie = resp_ie,
2821                                 .resp_ie_len = resp_ie_len,
2822                         };
2823
2824                         cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2825                 }
2826         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2827                 cfg80211_ibss_joined(usbdev->net, bssid,
2828                                      get_current_channel(usbdev, NULL),
2829                                      GFP_KERNEL);
2830
2831         kfree(info);
2832
2833         priv->connected = true;
2834         memcpy(priv->bssid, bssid, ETH_ALEN);
2835
2836         usbnet_resume_rx(usbdev);
2837         netif_carrier_on(usbdev->net);
2838 }
2839
2840 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2841 {
2842         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2843
2844         if (priv->connected) {
2845                 priv->connected = false;
2846                 eth_zero_addr(priv->bssid);
2847
2848                 deauthenticate(usbdev);
2849
2850                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2851         }
2852
2853         netif_carrier_off(usbdev->net);
2854 }
2855
2856 static void rndis_wlan_worker(struct work_struct *work)
2857 {
2858         struct rndis_wlan_private *priv =
2859                 container_of(work, struct rndis_wlan_private, work);
2860         struct usbnet *usbdev = priv->usbdev;
2861
2862         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2863                 rndis_wlan_do_link_up_work(usbdev);
2864
2865         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2866                 rndis_wlan_do_link_down_work(usbdev);
2867
2868         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2869                 set_multicast_list(usbdev);
2870 }
2871
2872 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2873 {
2874         struct usbnet *usbdev = netdev_priv(dev);
2875         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2876
2877         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2878                 return;
2879
2880         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2881         queue_work(priv->workqueue, &priv->work);
2882 }
2883
2884 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2885                                 struct ndis_80211_status_indication *indication,
2886                                 int len)
2887 {
2888         u8 *buf;
2889         const char *type;
2890         int flags, buflen, key_id;
2891         bool pairwise_error, group_error;
2892         struct ndis_80211_auth_request *auth_req;
2893         enum nl80211_key_type key_type;
2894
2895         /* must have at least one array entry */
2896         if (len < offsetof(struct ndis_80211_status_indication, u) +
2897                                 sizeof(struct ndis_80211_auth_request)) {
2898                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2899                             len);
2900                 return;
2901         }
2902
2903         buf = (void *)&indication->u.auth_request[0];
2904         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2905
2906         while (buflen >= sizeof(*auth_req)) {
2907                 auth_req = (void *)buf;
2908                 if (buflen < le32_to_cpu(auth_req->length))
2909                         return;
2910                 type = "unknown";
2911                 flags = le32_to_cpu(auth_req->flags);
2912                 pairwise_error = false;
2913                 group_error = false;
2914
2915                 if (flags & 0x1)
2916                         type = "reauth request";
2917                 if (flags & 0x2)
2918                         type = "key update request";
2919                 if (flags & 0x6) {
2920                         pairwise_error = true;
2921                         type = "pairwise_error";
2922                 }
2923                 if (flags & 0xe) {
2924                         group_error = true;
2925                         type = "group_error";
2926                 }
2927
2928                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2929                             type, le32_to_cpu(auth_req->flags));
2930
2931                 if (pairwise_error) {
2932                         key_type = NL80211_KEYTYPE_PAIRWISE;
2933                         key_id = -1;
2934
2935                         cfg80211_michael_mic_failure(usbdev->net,
2936                                                         auth_req->bssid,
2937                                                         key_type, key_id, NULL,
2938                                                         GFP_KERNEL);
2939                 }
2940
2941                 if (group_error) {
2942                         key_type = NL80211_KEYTYPE_GROUP;
2943                         key_id = -1;
2944
2945                         cfg80211_michael_mic_failure(usbdev->net,
2946                                                         auth_req->bssid,
2947                                                         key_type, key_id, NULL,
2948                                                         GFP_KERNEL);
2949                 }
2950
2951                 buflen -= le32_to_cpu(auth_req->length);
2952                 buf += le32_to_cpu(auth_req->length);
2953         }
2954 }
2955
2956 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2957                                 struct ndis_80211_status_indication *indication,
2958                                 int len)
2959 {
2960         struct ndis_80211_pmkid_cand_list *cand_list;
2961         int list_len, expected_len, i;
2962
2963         if (len < offsetof(struct ndis_80211_status_indication, u) +
2964                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2965                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2966                             len);
2967                 return;
2968         }
2969
2970         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2971                         sizeof(struct ndis_80211_pmkid_candidate);
2972         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2973                         offsetof(struct ndis_80211_status_indication, u);
2974
2975         if (len < expected_len) {
2976                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2977                             len, expected_len);
2978                 return;
2979         }
2980
2981         cand_list = &indication->u.cand_list;
2982
2983         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2984                     le32_to_cpu(cand_list->version),
2985                     le32_to_cpu(cand_list->num_candidates));
2986
2987         if (le32_to_cpu(cand_list->version) != 1)
2988                 return;
2989
2990         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2991                 struct ndis_80211_pmkid_candidate *cand =
2992                                                 &cand_list->candidate_list[i];
2993                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
2994
2995                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
2996                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
2997
2998                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
2999                                                 preauth, GFP_ATOMIC);
3000         }
3001 }
3002
3003 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3004                         struct rndis_indicate *msg, int buflen)
3005 {
3006         struct ndis_80211_status_indication *indication;
3007         unsigned int len, offset;
3008
3009         offset = offsetof(struct rndis_indicate, status) +
3010                         le32_to_cpu(msg->offset);
3011         len = le32_to_cpu(msg->length);
3012
3013         if (len < 8) {
3014                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3015                             len);
3016                 return;
3017         }
3018
3019         if (len > buflen || offset > buflen || offset + len > buflen) {
3020                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3021                             offset + len, buflen);
3022                 return;
3023         }
3024
3025         indication = (void *)((u8 *)msg + offset);
3026
3027         switch (le32_to_cpu(indication->status_type)) {
3028         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3029                 netdev_info(usbdev->net, "radio state indication: %i\n",
3030                             le32_to_cpu(indication->u.radio_status));
3031                 return;
3032
3033         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3034                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3035                             le32_to_cpu(indication->u.media_stream_mode));
3036                 return;
3037
3038         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3039                 rndis_wlan_auth_indication(usbdev, indication, len);
3040                 return;
3041
3042         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3043                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3044                 return;
3045
3046         default:
3047                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3048                             le32_to_cpu(indication->status_type));
3049         }
3050 }
3051
3052 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3053 {
3054         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3055         struct rndis_indicate *msg = ind;
3056
3057         switch (le32_to_cpu(msg->status)) {
3058         case RNDIS_STATUS_MEDIA_CONNECT:
3059                 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3060                         /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3061                          * "media connect" indications which confuses driver
3062                          * and userspace to think that device is
3063                          * roaming/reassociating when it isn't.
3064                          */
3065                         netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3066                         return;
3067                 }
3068
3069                 usbnet_pause_rx(usbdev);
3070
3071                 netdev_info(usbdev->net, "media connect\n");
3072
3073                 /* queue work to avoid recursive calls into rndis_command */
3074                 set_bit(WORK_LINK_UP, &priv->work_pending);
3075                 queue_work(priv->workqueue, &priv->work);
3076                 break;
3077
3078         case RNDIS_STATUS_MEDIA_DISCONNECT:
3079                 netdev_info(usbdev->net, "media disconnect\n");
3080
3081                 /* queue work to avoid recursive calls into rndis_command */
3082                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3083                 queue_work(priv->workqueue, &priv->work);
3084                 break;
3085
3086         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3087                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3088                 break;
3089
3090         default:
3091                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3092                             le32_to_cpu(msg->status));
3093                 break;
3094         }
3095 }
3096
3097 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3098 {
3099         struct {
3100                 __le32  num_items;
3101                 __le32  items[8];
3102         } networks_supported;
3103         struct ndis_80211_capability caps;
3104         int len, retval, i, n;
3105         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3106
3107         /* determine supported modes */
3108         len = sizeof(networks_supported);
3109         retval = rndis_query_oid(usbdev,
3110                                  RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3111                                  &networks_supported, &len);
3112         if (!retval) {
3113                 n = le32_to_cpu(networks_supported.num_items);
3114                 if (n > 8)
3115                         n = 8;
3116                 for (i = 0; i < n; i++) {
3117                         switch (le32_to_cpu(networks_supported.items[i])) {
3118                         case NDIS_80211_TYPE_FREQ_HOP:
3119                         case NDIS_80211_TYPE_DIRECT_SEQ:
3120                                 priv->caps |= CAP_MODE_80211B;
3121                                 break;
3122                         case NDIS_80211_TYPE_OFDM_A:
3123                                 priv->caps |= CAP_MODE_80211A;
3124                                 break;
3125                         case NDIS_80211_TYPE_OFDM_G:
3126                                 priv->caps |= CAP_MODE_80211G;
3127                                 break;
3128                         }
3129                 }
3130         }
3131
3132         /* get device 802.11 capabilities, number of PMKIDs */
3133         len = sizeof(caps);
3134         retval = rndis_query_oid(usbdev,
3135                                  RNDIS_OID_802_11_CAPABILITY,
3136                                  &caps, &len);
3137         if (!retval) {
3138                 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3139                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3140                                 le32_to_cpu(caps.length),
3141                                 le32_to_cpu(caps.version),
3142                                 le32_to_cpu(caps.num_pmkids),
3143                                 le32_to_cpu(caps.num_auth_encr_pair));
3144                 wiphy->max_num_pmkids = le32_to_cpu(caps.num_pmkids);
3145         } else
3146                 wiphy->max_num_pmkids = 0;
3147
3148         return retval;
3149 }
3150
3151 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3152 {
3153         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3154         enum nl80211_cqm_rssi_threshold_event event;
3155         int thold, hyst, last_event;
3156
3157         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3158                 return;
3159         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3160                 return;
3161
3162         last_event = priv->last_cqm_event_rssi;
3163         thold = priv->cqm_rssi_thold;
3164         hyst = priv->cqm_rssi_hyst;
3165
3166         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3167                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3168         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3169                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3170         else
3171                 return;
3172
3173         priv->last_cqm_event_rssi = rssi;
3174         cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3175 }
3176
3177 #define DEVICE_POLLER_JIFFIES (HZ)
3178 static void rndis_device_poller(struct work_struct *work)
3179 {
3180         struct rndis_wlan_private *priv =
3181                 container_of(work, struct rndis_wlan_private,
3182                                                         dev_poller_work.work);
3183         struct usbnet *usbdev = priv->usbdev;
3184         __le32 rssi, tmp;
3185         int len, ret, j;
3186         int update_jiffies = DEVICE_POLLER_JIFFIES;
3187         void *buf;
3188
3189         /* Only check/do workaround when connected. Calling is_associated()
3190          * also polls device with rndis_command() and catches for media link
3191          * indications.
3192          */
3193         if (!is_associated(usbdev)) {
3194                 /* Workaround bad scanning in BCM4320a devices with active
3195                  * background scanning when not associated.
3196                  */
3197                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3198                     !priv->scan_request) {
3199                         /* Get previous scan results */
3200                         rndis_check_bssid_list(usbdev, NULL, NULL);
3201
3202                         /* Initiate new scan */
3203                         rndis_start_bssid_list_scan(usbdev);
3204                 }
3205
3206                 goto end;
3207         }
3208
3209         len = sizeof(rssi);
3210         ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3211                               &rssi, &len);
3212         if (ret == 0) {
3213                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3214                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3215         }
3216
3217         netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3218                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3219
3220         /* Workaround transfer stalls on poor quality links.
3221          * TODO: find right way to fix these stalls (as stalls do not happen
3222          * with ndiswrapper/windows driver). */
3223         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3224                 /* Decrease stats worker interval to catch stalls.
3225                  * faster. Faster than 400-500ms causes packet loss,
3226                  * Slower doesn't catch stalls fast enough.
3227                  */
3228                 j = msecs_to_jiffies(priv->param_workaround_interval);
3229                 if (j > DEVICE_POLLER_JIFFIES)
3230                         j = DEVICE_POLLER_JIFFIES;
3231                 else if (j <= 0)
3232                         j = 1;
3233                 update_jiffies = j;
3234
3235                 /* Send scan OID. Use of both OIDs is required to get device
3236                  * working.
3237                  */
3238                 tmp = cpu_to_le32(1);
3239                 rndis_set_oid(usbdev,
3240                               RNDIS_OID_802_11_BSSID_LIST_SCAN,
3241                               &tmp, sizeof(tmp));
3242
3243                 len = CONTROL_BUFFER_SIZE;
3244                 buf = kmalloc(len, GFP_KERNEL);
3245                 if (!buf)
3246                         goto end;
3247
3248                 rndis_query_oid(usbdev,
3249                                 RNDIS_OID_802_11_BSSID_LIST,
3250                                 buf, &len);
3251                 kfree(buf);
3252         }
3253
3254 end:
3255         if (update_jiffies >= HZ)
3256                 update_jiffies = round_jiffies_relative(update_jiffies);
3257         else {
3258                 j = round_jiffies_relative(update_jiffies);
3259                 if (abs(j - update_jiffies) <= 10)
3260                         update_jiffies = j;
3261         }
3262
3263         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3264                                                                 update_jiffies);
3265 }
3266
3267 /*
3268  * driver/device initialization
3269  */
3270 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3271 {
3272         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3273
3274         priv->device_type = device_type;
3275
3276         priv->param_country[0] = modparam_country[0];
3277         priv->param_country[1] = modparam_country[1];
3278         priv->param_country[2] = 0;
3279         priv->param_frameburst   = modparam_frameburst;
3280         priv->param_afterburner  = modparam_afterburner;
3281         priv->param_power_save   = modparam_power_save;
3282         priv->param_power_output = modparam_power_output;
3283         priv->param_roamtrigger  = modparam_roamtrigger;
3284         priv->param_roamdelta    = modparam_roamdelta;
3285
3286         priv->param_country[0] = toupper(priv->param_country[0]);
3287         priv->param_country[1] = toupper(priv->param_country[1]);
3288         /* doesn't support EU as country code, use FI instead */
3289         if (!strcmp(priv->param_country, "EU"))
3290                 strcpy(priv->param_country, "FI");
3291
3292         if (priv->param_power_save < 0)
3293                 priv->param_power_save = 0;
3294         else if (priv->param_power_save > 2)
3295                 priv->param_power_save = 2;
3296
3297         if (priv->param_power_output < 0)
3298                 priv->param_power_output = 0;
3299         else if (priv->param_power_output > 3)
3300                 priv->param_power_output = 3;
3301
3302         if (priv->param_roamtrigger < -80)
3303                 priv->param_roamtrigger = -80;
3304         else if (priv->param_roamtrigger > -60)
3305                 priv->param_roamtrigger = -60;
3306
3307         if (priv->param_roamdelta < 0)
3308                 priv->param_roamdelta = 0;
3309         else if (priv->param_roamdelta > 2)
3310                 priv->param_roamdelta = 2;
3311
3312         if (modparam_workaround_interval < 0)
3313                 priv->param_workaround_interval = 500;
3314         else
3315                 priv->param_workaround_interval = modparam_workaround_interval;
3316 }
3317
3318 static int unknown_early_init(struct usbnet *usbdev)
3319 {
3320         /* copy module parameters for unknown so that iwconfig reports txpower
3321          * and workaround parameter is copied to private structure correctly.
3322          */
3323         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3324
3325         /* This is unknown device, so do not try set configuration parameters.
3326          */
3327
3328         return 0;
3329 }
3330
3331 static int bcm4320a_early_init(struct usbnet *usbdev)
3332 {
3333         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3334          * and workaround parameter is copied to private structure correctly.
3335          */
3336         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3337
3338         /* bcm4320a doesn't handle configuration parameters well. Try
3339          * set any and you get partially zeroed mac and broken device.
3340          */
3341
3342         return 0;
3343 }
3344
3345 static int bcm4320b_early_init(struct usbnet *usbdev)
3346 {
3347         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3348         char buf[8];
3349
3350         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3351
3352         /* Early initialization settings, setting these won't have effect
3353          * if called after generic_rndis_bind().
3354          */
3355
3356         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3357         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3358                                         priv->param_frameburst ? "1" : "0");
3359         rndis_set_config_parameter_str(usbdev, "Afterburner",
3360                                         priv->param_afterburner ? "1" : "0");
3361         sprintf(buf, "%d", priv->param_power_save);
3362         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3363         sprintf(buf, "%d", priv->param_power_output);
3364         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3365         sprintf(buf, "%d", priv->param_roamtrigger);
3366         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3367         sprintf(buf, "%d", priv->param_roamdelta);
3368         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3369
3370         return 0;
3371 }
3372
3373 /* same as rndis_netdev_ops but with local multicast handler */
3374 static const struct net_device_ops rndis_wlan_netdev_ops = {
3375         .ndo_open               = usbnet_open,
3376         .ndo_stop               = usbnet_stop,
3377         .ndo_start_xmit         = usbnet_start_xmit,
3378         .ndo_tx_timeout         = usbnet_tx_timeout,
3379         .ndo_get_stats64        = dev_get_tstats64,
3380         .ndo_set_mac_address    = eth_mac_addr,
3381         .ndo_validate_addr      = eth_validate_addr,
3382         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3383 };
3384
3385 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3386 {
3387         struct wiphy *wiphy;
3388         struct rndis_wlan_private *priv;
3389         int retval, len;
3390         __le32 tmp;
3391
3392         /* allocate wiphy and rndis private data
3393          * NOTE: We only support a single virtual interface, so wiphy
3394          * and wireless_dev are somewhat synonymous for this device.
3395          */
3396         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3397         if (!wiphy)
3398                 return -ENOMEM;
3399
3400         priv = wiphy_priv(wiphy);
3401         usbdev->net->ieee80211_ptr = &priv->wdev;
3402         priv->wdev.wiphy = wiphy;
3403         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3404
3405         /* These have to be initialized before calling generic_rndis_bind().
3406          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3407          */
3408         usbdev->driver_priv = priv;
3409         priv->usbdev = usbdev;
3410
3411         mutex_init(&priv->command_lock);
3412
3413         /* because rndis_command() sleeps we need to use workqueue */
3414         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3415         if (!priv->workqueue) {
3416                 wiphy_free(wiphy);
3417                 return -ENOMEM;
3418         }
3419         INIT_WORK(&priv->work, rndis_wlan_worker);
3420         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3421         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3422
3423         /* try bind rndis_host */
3424         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3425         if (retval < 0)
3426                 goto fail;
3427
3428         /* generic_rndis_bind set packet filter to multicast_all+
3429          * promisc mode which doesn't work well for our devices (device
3430          * picks up rssi to closest station instead of to access point).
3431          *
3432          * rndis_host wants to avoid all OID as much as possible
3433          * so do promisc/multicast handling in rndis_wlan.
3434          */
3435         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3436
3437         tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3438         retval = rndis_set_oid(usbdev,
3439                                RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3440                                &tmp, sizeof(tmp));
3441
3442         len = sizeof(tmp);
3443         retval = rndis_query_oid(usbdev,
3444                                  RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3445                                  &tmp, &len);
3446         priv->multicast_size = le32_to_cpu(tmp);
3447         if (retval < 0 || priv->multicast_size < 0)
3448                 priv->multicast_size = 0;
3449         if (priv->multicast_size > 0)
3450                 usbdev->net->flags |= IFF_MULTICAST;
3451         else
3452                 usbdev->net->flags &= ~IFF_MULTICAST;
3453
3454         /* fill-out wiphy structure and register w/ cfg80211 */
3455         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3456         wiphy->privid = rndis_wiphy_privid;
3457         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3458                                         | BIT(NL80211_IFTYPE_ADHOC);
3459         wiphy->max_scan_ssids = 1;
3460
3461         /* TODO: fill-out band/encr information based on priv->caps */
3462         rndis_wlan_get_caps(usbdev, wiphy);
3463
3464         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3465         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3466         priv->band.channels = priv->channels;
3467         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3468         priv->band.bitrates = priv->rates;
3469         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3470         wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3471         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3472
3473         memcpy(priv->cipher_suites, rndis_cipher_suites,
3474                                                 sizeof(rndis_cipher_suites));
3475         wiphy->cipher_suites = priv->cipher_suites;
3476         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3477
3478         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3479
3480         if (wiphy_register(wiphy)) {
3481                 retval = -ENODEV;
3482                 goto fail;
3483         }
3484
3485         set_default_iw_params(usbdev);
3486
3487         priv->power_mode = -1;
3488
3489         /* set default rts/frag */
3490         rndis_set_wiphy_params(wiphy,
3491                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3492
3493         /* turn radio off on init */
3494         priv->radio_on = false;
3495         disassociate(usbdev, false);
3496         netif_carrier_off(usbdev->net);
3497
3498         return 0;
3499
3500 fail:
3501         cancel_delayed_work_sync(&priv->dev_poller_work);
3502         cancel_delayed_work_sync(&priv->scan_work);
3503         cancel_work_sync(&priv->work);
3504         destroy_workqueue(priv->workqueue);
3505
3506         wiphy_free(wiphy);
3507         return retval;
3508 }
3509
3510 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3511 {
3512         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3513
3514         /* turn radio off */
3515         disassociate(usbdev, false);
3516
3517         cancel_delayed_work_sync(&priv->dev_poller_work);
3518         cancel_delayed_work_sync(&priv->scan_work);
3519         cancel_work_sync(&priv->work);
3520         destroy_workqueue(priv->workqueue);
3521
3522         rndis_unbind(usbdev, intf);
3523
3524         wiphy_unregister(priv->wdev.wiphy);
3525         wiphy_free(priv->wdev.wiphy);
3526 }
3527
3528 static int rndis_wlan_reset(struct usbnet *usbdev)
3529 {
3530         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3531         int retval;
3532
3533         netdev_dbg(usbdev->net, "%s()\n", __func__);
3534
3535         retval = rndis_reset(usbdev);
3536         if (retval)
3537                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3538
3539         /* rndis_reset cleared multicast list, so restore here.
3540            (set_multicast_list() also turns on current packet filter) */
3541         set_multicast_list(usbdev);
3542
3543         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3544                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3545
3546         return deauthenticate(usbdev);
3547 }
3548
3549 static int rndis_wlan_stop(struct usbnet *usbdev)
3550 {
3551         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3552         int retval;
3553         __le32 filter;
3554
3555         netdev_dbg(usbdev->net, "%s()\n", __func__);
3556
3557         retval = disassociate(usbdev, false);
3558
3559         priv->work_pending = 0;
3560         cancel_delayed_work_sync(&priv->dev_poller_work);
3561         cancel_delayed_work_sync(&priv->scan_work);
3562         cancel_work_sync(&priv->work);
3563         flush_workqueue(priv->workqueue);
3564
3565         if (priv->scan_request) {
3566                 struct cfg80211_scan_info info = {
3567                         .aborted = true,
3568                 };
3569
3570                 cfg80211_scan_done(priv->scan_request, &info);
3571                 priv->scan_request = NULL;
3572         }
3573
3574         /* Set current packet filter zero to block receiving data packets from
3575            device. */
3576         filter = 0;
3577         rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3578                                                                 sizeof(filter));
3579
3580         return retval;
3581 }
3582
3583 static const struct driver_info bcm4320b_info = {
3584         .description =  "Wireless RNDIS device, BCM4320b based",
3585         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3586                                 FLAG_AVOID_UNLINK_URBS,
3587         .bind =         rndis_wlan_bind,
3588         .unbind =       rndis_wlan_unbind,
3589         .status =       rndis_status,
3590         .rx_fixup =     rndis_rx_fixup,
3591         .tx_fixup =     rndis_tx_fixup,
3592         .reset =        rndis_wlan_reset,
3593         .stop =         rndis_wlan_stop,
3594         .early_init =   bcm4320b_early_init,
3595         .indication =   rndis_wlan_indication,
3596 };
3597
3598 static const struct driver_info bcm4320a_info = {
3599         .description =  "Wireless RNDIS device, BCM4320a based",
3600         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3601                                 FLAG_AVOID_UNLINK_URBS,
3602         .bind =         rndis_wlan_bind,
3603         .unbind =       rndis_wlan_unbind,
3604         .status =       rndis_status,
3605         .rx_fixup =     rndis_rx_fixup,
3606         .tx_fixup =     rndis_tx_fixup,
3607         .reset =        rndis_wlan_reset,
3608         .stop =         rndis_wlan_stop,
3609         .early_init =   bcm4320a_early_init,
3610         .indication =   rndis_wlan_indication,
3611 };
3612
3613 static const struct driver_info rndis_wlan_info = {
3614         .description =  "Wireless RNDIS device",
3615         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3616                                 FLAG_AVOID_UNLINK_URBS,
3617         .bind =         rndis_wlan_bind,
3618         .unbind =       rndis_wlan_unbind,
3619         .status =       rndis_status,
3620         .rx_fixup =     rndis_rx_fixup,
3621         .tx_fixup =     rndis_tx_fixup,
3622         .reset =        rndis_wlan_reset,
3623         .stop =         rndis_wlan_stop,
3624         .early_init =   unknown_early_init,
3625         .indication =   rndis_wlan_indication,
3626 };
3627
3628 /*-------------------------------------------------------------------------*/
3629
3630 static const struct usb_device_id products [] = {
3631 #define RNDIS_MASTER_INTERFACE \
3632         .bInterfaceClass        = USB_CLASS_COMM, \
3633         .bInterfaceSubClass     = 2 /* ACM */, \
3634         .bInterfaceProtocol     = 0x0ff
3635
3636 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3637  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3638  */
3639 {
3640         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3641                           | USB_DEVICE_ID_MATCH_DEVICE,
3642         .idVendor               = 0x0411,
3643         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3644         RNDIS_MASTER_INTERFACE,
3645         .driver_info            = (unsigned long) &bcm4320b_info,
3646 }, {
3647         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3648                           | USB_DEVICE_ID_MATCH_DEVICE,
3649         .idVendor               = 0x0baf,
3650         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3651         RNDIS_MASTER_INTERFACE,
3652         .driver_info            = (unsigned long) &bcm4320b_info,
3653 }, {
3654         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3655                           | USB_DEVICE_ID_MATCH_DEVICE,
3656         .idVendor               = 0x050d,
3657         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3658         RNDIS_MASTER_INTERFACE,
3659         .driver_info            = (unsigned long) &bcm4320b_info,
3660 }, {
3661         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3662                           | USB_DEVICE_ID_MATCH_DEVICE,
3663         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3664         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3665         RNDIS_MASTER_INTERFACE,
3666         .driver_info            = (unsigned long) &bcm4320b_info,
3667 }, {
3668         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3669                           | USB_DEVICE_ID_MATCH_DEVICE,
3670         .idVendor               = 0x13b1,
3671         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3672         RNDIS_MASTER_INTERFACE,
3673         .driver_info            = (unsigned long) &bcm4320b_info,
3674 }, {
3675         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3676                           | USB_DEVICE_ID_MATCH_DEVICE,
3677         .idVendor               = 0x13b1,
3678         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3679         RNDIS_MASTER_INTERFACE,
3680         .driver_info            = (unsigned long) &bcm4320b_info,
3681 }, {
3682         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3683                           | USB_DEVICE_ID_MATCH_DEVICE,
3684         .idVendor               = 0x0b05,
3685         .idProduct              = 0x1717,       /* Asus WL169gE */
3686         RNDIS_MASTER_INTERFACE,
3687         .driver_info            = (unsigned long) &bcm4320b_info,
3688 }, {
3689         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3690                           | USB_DEVICE_ID_MATCH_DEVICE,
3691         .idVendor               = 0x0a5c,
3692         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3693         RNDIS_MASTER_INTERFACE,
3694         .driver_info            = (unsigned long) &bcm4320b_info,
3695 }, {
3696         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3697                           | USB_DEVICE_ID_MATCH_DEVICE,
3698         .idVendor               = 0x1690,
3699         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3700         RNDIS_MASTER_INTERFACE,
3701         .driver_info            = (unsigned long) &bcm4320b_info,
3702 },
3703 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3704  * parameters available, hardware probably contain older firmware version with
3705  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3706  */
3707 {
3708         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3709                           | USB_DEVICE_ID_MATCH_DEVICE,
3710         .idVendor               = 0x13b1,
3711         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3712         RNDIS_MASTER_INTERFACE,
3713         .driver_info            = (unsigned long) &bcm4320a_info,
3714 }, {
3715         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3716                           | USB_DEVICE_ID_MATCH_DEVICE,
3717         .idVendor               = 0x0baf,
3718         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3719         RNDIS_MASTER_INTERFACE,
3720         .driver_info            = (unsigned long) &bcm4320a_info,
3721 }, {
3722         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3723                           | USB_DEVICE_ID_MATCH_DEVICE,
3724         .idVendor               = 0x0411,
3725         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3726         RNDIS_MASTER_INTERFACE,
3727         .driver_info            = (unsigned long) &bcm4320a_info,
3728 },
3729 /* Generic Wireless RNDIS devices that we don't have exact
3730  * idVendor/idProduct/chip yet.
3731  */
3732 {
3733         /* RNDIS is MSFT's un-official variant of CDC ACM */
3734         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3735         .driver_info = (unsigned long) &rndis_wlan_info,
3736 }, {
3737         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3738         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3739         .driver_info = (unsigned long) &rndis_wlan_info,
3740 },
3741         { },            // END
3742 };
3743 MODULE_DEVICE_TABLE(usb, products);
3744
3745 static struct usb_driver rndis_wlan_driver = {
3746         .name =         "rndis_wlan",
3747         .id_table =     products,
3748         .probe =        usbnet_probe,
3749         .disconnect =   usbnet_disconnect,
3750         .suspend =      usbnet_suspend,
3751         .resume =       usbnet_resume,
3752         .disable_hub_initiated_lpm = 1,
3753 };
3754
3755 module_usb_driver(rndis_wlan_driver);
3756
3757 MODULE_AUTHOR("Bjorge Dijkstra");
3758 MODULE_AUTHOR("Jussi Kivilinna");
3759 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3760 MODULE_LICENSE("GPL");
3761