drivers/net/wireless/rndis_wlan.c

   1 /*
   2  * Driver for RNDIS based wireless USB devices.
   3  *
   4  * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
   5  * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  *  Portions of this file are based on NDISwrapper project,
  22  *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
  23  *  http://ndiswrapper.sourceforge.net/
  24  */
  25
  26 // #define      DEBUG                   // error path messages, extra info
  27 // #define      VERBOSE                 // more; success messages
  28
  29 #include <linux/module.h>
  30 #include <linux/init.h>
  31 #include <linux/netdevice.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/ethtool.h>
  34 #include <linux/workqueue.h>
  35 #include <linux/mutex.h>
  36 #include <linux/mii.h>
  37 #include <linux/usb.h>
  38 #include <linux/usb/cdc.h>
  39 #include <linux/wireless.h>
  40 #include <linux/ieee80211.h>
  41 #include <linux/if_arp.h>
  42 #include <linux/ctype.h>
  43 #include <linux/spinlock.h>
  44 #include <net/iw_handler.h>
  45 #include <net/cfg80211.h>
  46 #include <linux/usb/usbnet.h>
  47 #include <linux/usb/rndis_host.h>
  48
  49
  50 /* NOTE: All these are settings for Broadcom chipset */
  51 static char modparam_country[4] = "EU";
  52 module_param_string(country, modparam_country, 4, 0444);
  53 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  54
  55 static int modparam_frameburst = 1;
  56 module_param_named(frameburst, modparam_frameburst, int, 0444);
  57 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  58
  59 static int modparam_afterburner = 0;
  60 module_param_named(afterburner, modparam_afterburner, int, 0444);
  61 MODULE_PARM_DESC(afterburner,
  62         "enable afterburner aka '125 High Speed Mode' (default: off)");
  63
  64 static int modparam_power_save = 0;
  65 module_param_named(power_save, modparam_power_save, int, 0444);
  66 MODULE_PARM_DESC(power_save,
  67         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
  68
  69 static int modparam_power_output = 3;
  70 module_param_named(power_output, modparam_power_output, int, 0444);
  71 MODULE_PARM_DESC(power_output,
  72         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  73
  74 static int modparam_roamtrigger = -70;
  75 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  76 MODULE_PARM_DESC(roamtrigger,
  77         "set roaming dBm trigger: -80=optimize for distance, "
  78                                 "-60=bandwidth (default: -70)");
  79
  80 static int modparam_roamdelta = 1;
  81 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  82 MODULE_PARM_DESC(roamdelta,
  83         "set roaming tendency: 0=aggressive, 1=moderate, "
  84                                 "2=conservative (default: moderate)");
  85
  86 static int modparam_workaround_interval;
  87 module_param_named(workaround_interval, modparam_workaround_interval,
  88                                                         int, 0444);
  89 MODULE_PARM_DESC(workaround_interval,
  90         "set stall workaround interval in msecs (0=disabled) (default: 0)");
  91
  92
  93 /* various RNDIS OID defs */
  94 #define OID_GEN_LINK_SPEED                      cpu_to_le32(0x00010107)
  95 #define OID_GEN_RNDIS_CONFIG_PARAMETER          cpu_to_le32(0x0001021b)
  96
  97 #define OID_GEN_XMIT_OK                         cpu_to_le32(0x00020101)
  98 #define OID_GEN_RCV_OK                          cpu_to_le32(0x00020102)
  99 #define OID_GEN_XMIT_ERROR                      cpu_to_le32(0x00020103)
 100 #define OID_GEN_RCV_ERROR                       cpu_to_le32(0x00020104)
 101 #define OID_GEN_RCV_NO_BUFFER                   cpu_to_le32(0x00020105)
 102
 103 #define OID_802_3_CURRENT_ADDRESS               cpu_to_le32(0x01010102)
 104 #define OID_802_3_MULTICAST_LIST                cpu_to_le32(0x01010103)
 105 #define OID_802_3_MAXIMUM_LIST_SIZE             cpu_to_le32(0x01010104)
 106
 107 #define OID_802_11_BSSID                        cpu_to_le32(0x0d010101)
 108 #define OID_802_11_SSID                         cpu_to_le32(0x0d010102)
 109 #define OID_802_11_INFRASTRUCTURE_MODE          cpu_to_le32(0x0d010108)
 110 #define OID_802_11_ADD_WEP                      cpu_to_le32(0x0d010113)
 111 #define OID_802_11_REMOVE_WEP                   cpu_to_le32(0x0d010114)
 112 #define OID_802_11_DISASSOCIATE                 cpu_to_le32(0x0d010115)
 113 #define OID_802_11_AUTHENTICATION_MODE          cpu_to_le32(0x0d010118)
 114 #define OID_802_11_PRIVACY_FILTER               cpu_to_le32(0x0d010119)
 115 #define OID_802_11_BSSID_LIST_SCAN              cpu_to_le32(0x0d01011a)
 116 #define OID_802_11_ENCRYPTION_STATUS            cpu_to_le32(0x0d01011b)
 117 #define OID_802_11_ADD_KEY                      cpu_to_le32(0x0d01011d)
 118 #define OID_802_11_REMOVE_KEY                   cpu_to_le32(0x0d01011e)
 119 #define OID_802_11_ASSOCIATION_INFORMATION      cpu_to_le32(0x0d01011f)
 120 #define OID_802_11_PMKID                        cpu_to_le32(0x0d010123)
 121 #define OID_802_11_NETWORK_TYPES_SUPPORTED      cpu_to_le32(0x0d010203)
 122 #define OID_802_11_NETWORK_TYPE_IN_USE          cpu_to_le32(0x0d010204)
 123 #define OID_802_11_TX_POWER_LEVEL               cpu_to_le32(0x0d010205)
 124 #define OID_802_11_RSSI                         cpu_to_le32(0x0d010206)
 125 #define OID_802_11_RSSI_TRIGGER                 cpu_to_le32(0x0d010207)
 126 #define OID_802_11_FRAGMENTATION_THRESHOLD      cpu_to_le32(0x0d010209)
 127 #define OID_802_11_RTS_THRESHOLD                cpu_to_le32(0x0d01020a)
 128 #define OID_802_11_SUPPORTED_RATES              cpu_to_le32(0x0d01020e)
 129 #define OID_802_11_CONFIGURATION                cpu_to_le32(0x0d010211)
 130 #define OID_802_11_BSSID_LIST                   cpu_to_le32(0x0d010217)
 131
 132
 133 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
 134 #define WL_NOISE        -96     /* typical noise level in dBm */
 135 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
 136
 137
 138 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
 139  * based on wireless rndis) has default txpower of 13dBm.
 140  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
 141  *  100% : 20 mW ~ 13dBm
 142  *   75% : 15 mW ~ 12dBm
 143  *   50% : 10 mW ~ 10dBm
 144  *   25% :  5 mW ~  7dBm
 145  */
 146 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
 147 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
 148 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
 149 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
 150
 151
 152 /* codes for "status" field of completion messages */
 153 #define RNDIS_STATUS_ADAPTER_NOT_READY          cpu_to_le32(0xc0010011)
 154 #define RNDIS_STATUS_ADAPTER_NOT_OPEN           cpu_to_le32(0xc0010012)
 155
 156
 157 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 158  * slightly modified for datatype endianess, etc
 159  */
 160 #define NDIS_802_11_LENGTH_SSID 32
 161 #define NDIS_802_11_LENGTH_RATES 8
 162 #define NDIS_802_11_LENGTH_RATES_EX 16
 163
 164 enum ndis_80211_net_type {
 165         NDIS_80211_TYPE_FREQ_HOP,
 166         NDIS_80211_TYPE_DIRECT_SEQ,
 167         NDIS_80211_TYPE_OFDM_A,
 168         NDIS_80211_TYPE_OFDM_G
 169 };
 170
 171 enum ndis_80211_net_infra {
 172         NDIS_80211_INFRA_ADHOC,
 173         NDIS_80211_INFRA_INFRA,
 174         NDIS_80211_INFRA_AUTO_UNKNOWN
 175 };
 176
 177 enum ndis_80211_auth_mode {
 178         NDIS_80211_AUTH_OPEN,
 179         NDIS_80211_AUTH_SHARED,
 180         NDIS_80211_AUTH_AUTO_SWITCH,
 181         NDIS_80211_AUTH_WPA,
 182         NDIS_80211_AUTH_WPA_PSK,
 183         NDIS_80211_AUTH_WPA_NONE,
 184         NDIS_80211_AUTH_WPA2,
 185         NDIS_80211_AUTH_WPA2_PSK
 186 };
 187
 188 enum ndis_80211_encr_status {
 189         NDIS_80211_ENCR_WEP_ENABLED,
 190         NDIS_80211_ENCR_DISABLED,
 191         NDIS_80211_ENCR_WEP_KEY_ABSENT,
 192         NDIS_80211_ENCR_NOT_SUPPORTED,
 193         NDIS_80211_ENCR_TKIP_ENABLED,
 194         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 195         NDIS_80211_ENCR_CCMP_ENABLED,
 196         NDIS_80211_ENCR_CCMP_KEY_ABSENT
 197 };
 198
 199 enum ndis_80211_priv_filter {
 200         NDIS_80211_PRIV_ACCEPT_ALL,
 201         NDIS_80211_PRIV_8021X_WEP
 202 };
 203
 204 enum ndis_80211_status_type {
 205         NDIS_80211_STATUSTYPE_AUTHENTICATION,
 206         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 207         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 208         NDIS_80211_STATUSTYPE_RADIOSTATE,
 209 };
 210
 211 enum ndis_80211_media_stream_mode {
 212         NDIS_80211_MEDIA_STREAM_OFF,
 213         NDIS_80211_MEDIA_STREAM_ON
 214 };
 215
 216 enum ndis_80211_radio_status {
 217         NDIS_80211_RADIO_STATUS_ON,
 218         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 219         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 220 };
 221
 222 enum ndis_80211_addkey_bits {
 223         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 224         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 225         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 226         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 227 };
 228
 229 enum ndis_80211_addwep_bits {
 230         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 231         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 232 };
 233
 234 struct ndis_80211_auth_request {
 235         __le32 length;
 236         u8 bssid[6];
 237         u8 padding[2];
 238         __le32 flags;
 239 } __attribute__((packed));
 240
 241 struct ndis_80211_pmkid_candidate {
 242         u8 bssid[6];
 243         u8 padding[2];
 244         __le32 flags;
 245 } __attribute__((packed));
 246
 247 struct ndis_80211_pmkid_cand_list {
 248         __le32 version;
 249         __le32 num_candidates;
 250         struct ndis_80211_pmkid_candidate candidate_list[0];
 251 } __attribute__((packed));
 252
 253 struct ndis_80211_status_indication {
 254         __le32 status_type;
 255         union {
 256                 __le32                                  media_stream_mode;
 257                 __le32                                  radio_status;
 258                 struct ndis_80211_auth_request          auth_request[0];
 259                 struct ndis_80211_pmkid_cand_list       cand_list;
 260         } u;
 261 } __attribute__((packed));
 262
 263 struct ndis_80211_ssid {
 264         __le32 length;
 265         u8 essid[NDIS_802_11_LENGTH_SSID];
 266 } __attribute__((packed));
 267
 268 struct ndis_80211_conf_freq_hop {
 269         __le32 length;
 270         __le32 hop_pattern;
 271         __le32 hop_set;
 272         __le32 dwell_time;
 273 } __attribute__((packed));
 274
 275 struct ndis_80211_conf {
 276         __le32 length;
 277         __le32 beacon_period;
 278         __le32 atim_window;
 279         __le32 ds_config;
 280         struct ndis_80211_conf_freq_hop fh_config;
 281 } __attribute__((packed));
 282
 283 struct ndis_80211_bssid_ex {
 284         __le32 length;
 285         u8 mac[6];
 286         u8 padding[2];
 287         struct ndis_80211_ssid ssid;
 288         __le32 privacy;
 289         __le32 rssi;
 290         __le32 net_type;
 291         struct ndis_80211_conf config;
 292         __le32 net_infra;
 293         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 294         __le32 ie_length;
 295         u8 ies[0];
 296 } __attribute__((packed));
 297
 298 struct ndis_80211_bssid_list_ex {
 299         __le32 num_items;
 300         struct ndis_80211_bssid_ex bssid[0];
 301 } __attribute__((packed));
 302
 303 struct ndis_80211_fixed_ies {
 304         u8 timestamp[8];
 305         __le16 beacon_interval;
 306         __le16 capabilities;
 307 } __attribute__((packed));
 308
 309 struct ndis_80211_wep_key {
 310         __le32 size;
 311         __le32 index;
 312         __le32 length;
 313         u8 material[32];
 314 } __attribute__((packed));
 315
 316 struct ndis_80211_key {
 317         __le32 size;
 318         __le32 index;
 319         __le32 length;
 320         u8 bssid[6];
 321         u8 padding[6];
 322         u8 rsc[8];
 323         u8 material[32];
 324 } __attribute__((packed));
 325
 326 struct ndis_80211_remove_key {
 327         __le32 size;
 328         __le32 index;
 329         u8 bssid[6];
 330         u8 padding[2];
 331 } __attribute__((packed));
 332
 333 struct ndis_config_param {
 334         __le32 name_offs;
 335         __le32 name_length;
 336         __le32 type;
 337         __le32 value_offs;
 338         __le32 value_length;
 339 } __attribute__((packed));
 340
 341 struct ndis_80211_assoc_info {
 342         __le32 length;
 343         __le16 req_ies;
 344         struct req_ie {
 345                 __le16 capa;
 346                 __le16 listen_interval;
 347                 u8 cur_ap_address[6];
 348         } req_ie;
 349         __le32 req_ie_length;
 350         __le32 offset_req_ies;
 351         __le16 resp_ies;
 352         struct resp_ie {
 353                 __le16 capa;
 354                 __le16 status_code;
 355                 __le16 assoc_id;
 356         } resp_ie;
 357         __le32 resp_ie_length;
 358         __le32 offset_resp_ies;
 359 } __attribute__((packed));
 360
 361 /*
 362  *  private data
 363  */
 364 #define NET_TYPE_11FB   0
 365
 366 #define CAP_MODE_80211A         1
 367 #define CAP_MODE_80211B         2
 368 #define CAP_MODE_80211G         4
 369 #define CAP_MODE_MASK           7
 370
 371 #define WORK_LINK_UP            (1<<0)
 372 #define WORK_LINK_DOWN          (1<<1)
 373 #define WORK_SET_MULTICAST_LIST (1<<2)
 374
 375 #define RNDIS_WLAN_ALG_NONE     0
 376 #define RNDIS_WLAN_ALG_WEP      (1<<0)
 377 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
 378 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
 379
 380 #define RNDIS_WLAN_KEY_MGMT_NONE        0
 381 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 382 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 383
 384 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 385
 386 static const struct ieee80211_channel rndis_channels[] = {
 387         { .center_freq = 2412 },
 388         { .center_freq = 2417 },
 389         { .center_freq = 2422 },
 390         { .center_freq = 2427 },
 391         { .center_freq = 2432 },
 392         { .center_freq = 2437 },
 393         { .center_freq = 2442 },
 394         { .center_freq = 2447 },
 395         { .center_freq = 2452 },
 396         { .center_freq = 2457 },
 397         { .center_freq = 2462 },
 398         { .center_freq = 2467 },
 399         { .center_freq = 2472 },
 400         { .center_freq = 2484 },
 401 };
 402
 403 static const struct ieee80211_rate rndis_rates[] = {
 404         { .bitrate = 10 },
 405         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 406         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 407         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 408         { .bitrate = 60 },
 409         { .bitrate = 90 },
 410         { .bitrate = 120 },
 411         { .bitrate = 180 },
 412         { .bitrate = 240 },
 413         { .bitrate = 360 },
 414         { .bitrate = 480 },
 415         { .bitrate = 540 }
 416 };
 417
 418 static const u32 rndis_cipher_suites[] = {
 419         WLAN_CIPHER_SUITE_WEP40,
 420         WLAN_CIPHER_SUITE_WEP104,
 421         WLAN_CIPHER_SUITE_TKIP,
 422         WLAN_CIPHER_SUITE_CCMP,
 423 };
 424
 425 struct rndis_wlan_encr_key {
 426         int len;
 427         u32 cipher;
 428         u8 material[32];
 429         u8 bssid[ETH_ALEN];
 430         bool pairwise;
 431         bool tx_key;
 432 };
 433
 434 /* RNDIS device private data */
 435 struct rndis_wlan_private {
 436         struct usbnet *usbdev;
 437
 438         struct wireless_dev wdev;
 439
 440         struct cfg80211_scan_request *scan_request;
 441
 442         struct workqueue_struct *workqueue;
 443         struct delayed_work dev_poller_work;
 444         struct delayed_work scan_work;
 445         struct work_struct work;
 446         struct mutex command_lock;
 447         unsigned long work_pending;
 448         int last_qual;
 449
 450         struct ieee80211_supported_band band;
 451         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 452         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 453         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 454
 455         int caps;
 456         int multicast_size;
 457
 458         /* module parameters */
 459         char param_country[4];
 460         int  param_frameburst;
 461         int  param_afterburner;
 462         int  param_power_save;
 463         int  param_power_output;
 464         int  param_roamtrigger;
 465         int  param_roamdelta;
 466         u32  param_workaround_interval;
 467
 468         /* hardware state */
 469         bool radio_on;
 470         int infra_mode;
 471         bool connected;
 472         u8 bssid[ETH_ALEN];
 473         struct ndis_80211_ssid essid;
 474         __le32 current_command_oid;
 475
 476         /* encryption stuff */
 477         int  encr_tx_key_index;
 478         struct rndis_wlan_encr_key encr_keys[4];
 479         enum nl80211_auth_type wpa_auth_type;
 480         int  wpa_version;
 481         int  wpa_keymgmt;
 482         int  wpa_ie_len;
 483         u8  *wpa_ie;
 484         int  wpa_cipher_pair;
 485         int  wpa_cipher_group;
 486
 487         u8 command_buffer[COMMAND_BUFFER_SIZE];
 488 };
 489
 490 /*
 491  * cfg80211 ops
 492  */
 493 static int rndis_change_virtual_intf(struct wiphy *wiphy,
 494                                         struct net_device *dev,
 495                                         enum nl80211_iftype type, u32 *flags,
 496                                         struct vif_params *params);
 497
 498 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
 499                         struct cfg80211_scan_request *request);
 500
 501 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 502
 503 static int rndis_set_tx_power(struct wiphy *wiphy, enum tx_power_setting type,
 504                                 int dbm);
 505 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
 506
 507 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 508                                 struct cfg80211_connect_params *sme);
 509
 510 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 511                                 u16 reason_code);
 512
 513 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 514                                         struct cfg80211_ibss_params *params);
 515
 516 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 517
 518 static int rndis_set_channel(struct wiphy *wiphy,
 519         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
 520
 521 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 522                                         u8 key_index, const u8 *mac_addr,
 523                                         struct key_params *params);
 524
 525 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 526                                         u8 key_index, const u8 *mac_addr);
 527
 528 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 529                                                                 u8 key_index);
 530
 531 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 532                                         u8 *mac, struct station_info *sinfo);
 533
 534 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 535                                int idx, u8 *mac, struct station_info *sinfo);
 536
 537 static struct cfg80211_ops rndis_config_ops = {
 538         .change_virtual_intf = rndis_change_virtual_intf,
 539         .scan = rndis_scan,
 540         .set_wiphy_params = rndis_set_wiphy_params,
 541         .set_tx_power = rndis_set_tx_power,
 542         .get_tx_power = rndis_get_tx_power,
 543         .connect = rndis_connect,
 544         .disconnect = rndis_disconnect,
 545         .join_ibss = rndis_join_ibss,
 546         .leave_ibss = rndis_leave_ibss,
 547         .set_channel = rndis_set_channel,
 548         .add_key = rndis_add_key,
 549         .del_key = rndis_del_key,
 550         .set_default_key = rndis_set_default_key,
 551         .get_station = rndis_get_station,
 552         .dump_station = rndis_dump_station,
 553 };
 554
 555 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 556
 557
 558 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 559 {
 560         return (struct rndis_wlan_private *)dev->driver_priv;
 561 }
 562
 563 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 564 {
 565         switch (priv->param_power_output) {
 566         default:
 567         case 3:
 568                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 569         case 2:
 570                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 571         case 1:
 572                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 573         case 0:
 574                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 575         }
 576 }
 577
 578 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
 579 {
 580         int cipher = priv->encr_keys[idx].cipher;
 581
 582         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 583                 cipher == WLAN_CIPHER_SUITE_TKIP);
 584 }
 585
 586 static int rndis_cipher_to_alg(u32 cipher)
 587 {
 588         switch (cipher) {
 589         default:
 590                 return RNDIS_WLAN_ALG_NONE;
 591         case WLAN_CIPHER_SUITE_WEP40:
 592         case WLAN_CIPHER_SUITE_WEP104:
 593                 return RNDIS_WLAN_ALG_WEP;
 594         case WLAN_CIPHER_SUITE_TKIP:
 595                 return RNDIS_WLAN_ALG_TKIP;
 596         case WLAN_CIPHER_SUITE_CCMP:
 597                 return RNDIS_WLAN_ALG_CCMP;
 598         }
 599 }
 600
 601 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 602 {
 603         switch (akm_suite) {
 604         default:
 605                 return RNDIS_WLAN_KEY_MGMT_NONE;
 606         case WLAN_AKM_SUITE_8021X:
 607                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 608         case WLAN_AKM_SUITE_PSK:
 609                 return RNDIS_WLAN_KEY_MGMT_PSK;
 610         }
 611 }
 612
 613 #ifdef DEBUG
 614 static const char *oid_to_string(__le32 oid)
 615 {
 616         switch (oid) {
 617 #define OID_STR(oid) case oid: return(#oid)
 618                 /* from rndis_host.h */
 619                 OID_STR(OID_802_3_PERMANENT_ADDRESS);
 620                 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
 621                 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
 622                 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
 623
 624                 /* from rndis_wlan.c */
 625                 OID_STR(OID_GEN_LINK_SPEED);
 626                 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
 627
 628                 OID_STR(OID_GEN_XMIT_OK);
 629                 OID_STR(OID_GEN_RCV_OK);
 630                 OID_STR(OID_GEN_XMIT_ERROR);
 631                 OID_STR(OID_GEN_RCV_ERROR);
 632                 OID_STR(OID_GEN_RCV_NO_BUFFER);
 633
 634                 OID_STR(OID_802_3_CURRENT_ADDRESS);
 635                 OID_STR(OID_802_3_MULTICAST_LIST);
 636                 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
 637
 638                 OID_STR(OID_802_11_BSSID);
 639                 OID_STR(OID_802_11_SSID);
 640                 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
 641                 OID_STR(OID_802_11_ADD_WEP);
 642                 OID_STR(OID_802_11_REMOVE_WEP);
 643                 OID_STR(OID_802_11_DISASSOCIATE);
 644                 OID_STR(OID_802_11_AUTHENTICATION_MODE);
 645                 OID_STR(OID_802_11_PRIVACY_FILTER);
 646                 OID_STR(OID_802_11_BSSID_LIST_SCAN);
 647                 OID_STR(OID_802_11_ENCRYPTION_STATUS);
 648                 OID_STR(OID_802_11_ADD_KEY);
 649                 OID_STR(OID_802_11_REMOVE_KEY);
 650                 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
 651                 OID_STR(OID_802_11_PMKID);
 652                 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
 653                 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
 654                 OID_STR(OID_802_11_TX_POWER_LEVEL);
 655                 OID_STR(OID_802_11_RSSI);
 656                 OID_STR(OID_802_11_RSSI_TRIGGER);
 657                 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
 658                 OID_STR(OID_802_11_RTS_THRESHOLD);
 659                 OID_STR(OID_802_11_SUPPORTED_RATES);
 660                 OID_STR(OID_802_11_CONFIGURATION);
 661                 OID_STR(OID_802_11_BSSID_LIST);
 662 #undef OID_STR
 663         }
 664
 665         return "?";
 666 }
 667 #else
 668 static const char *oid_to_string(__le32 oid)
 669 {
 670         return "?";
 671 }
 672 #endif
 673
 674 /* translate error code */
 675 static int rndis_error_status(__le32 rndis_status)
 676 {
 677         int ret = -EINVAL;
 678         switch (rndis_status) {
 679         case RNDIS_STATUS_SUCCESS:
 680                 ret = 0;
 681                 break;
 682         case RNDIS_STATUS_FAILURE:
 683         case RNDIS_STATUS_INVALID_DATA:
 684                 ret = -EINVAL;
 685                 break;
 686         case RNDIS_STATUS_NOT_SUPPORTED:
 687                 ret = -EOPNOTSUPP;
 688                 break;
 689         case RNDIS_STATUS_ADAPTER_NOT_READY:
 690         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 691                 ret = -EBUSY;
 692                 break;
 693         }
 694         return ret;
 695 }
 696
 697 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
 698 {
 699         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 700         union {
 701                 void                    *buf;
 702                 struct rndis_msg_hdr    *header;
 703                 struct rndis_query      *get;
 704                 struct rndis_query_c    *get_c;
 705         } u;
 706         int ret, buflen;
 707
 708         buflen = *len + sizeof(*u.get);
 709         if (buflen < CONTROL_BUFFER_SIZE)
 710                 buflen = CONTROL_BUFFER_SIZE;
 711
 712         if (buflen > COMMAND_BUFFER_SIZE) {
 713                 u.buf = kmalloc(buflen, GFP_KERNEL);
 714                 if (!u.buf)
 715                         return -ENOMEM;
 716         } else {
 717                 u.buf = priv->command_buffer;
 718         }
 719
 720         mutex_lock(&priv->command_lock);
 721
 722         memset(u.get, 0, sizeof *u.get);
 723         u.get->msg_type = RNDIS_MSG_QUERY;
 724         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 725         u.get->oid = oid;
 726
 727         priv->current_command_oid = oid;
 728         ret = rndis_command(dev, u.header, buflen);
 729         priv->current_command_oid = 0;
 730         if (ret < 0)
 731                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 732                            __func__, oid_to_string(oid), ret,
 733                            le32_to_cpu(u.get_c->status));
 734
 735         if (ret == 0) {
 736                 memcpy(data, u.buf + le32_to_cpu(u.get_c->offset) + 8, *len);
 737
 738                 ret = le32_to_cpu(u.get_c->len);
 739                 if (ret > *len)
 740                         *len = ret;
 741
 742                 ret = rndis_error_status(u.get_c->status);
 743                 if (ret < 0)
 744                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 745                                    __func__, oid_to_string(oid),
 746                                    le32_to_cpu(u.get_c->status), ret);
 747         }
 748
 749         mutex_unlock(&priv->command_lock);
 750
 751         if (u.buf != priv->command_buffer)
 752                 kfree(u.buf);
 753         return ret;
 754 }
 755
 756 static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len)
 757 {
 758         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 759         union {
 760                 void                    *buf;
 761                 struct rndis_msg_hdr    *header;
 762                 struct rndis_set        *set;
 763                 struct rndis_set_c      *set_c;
 764         } u;
 765         int ret, buflen;
 766
 767         buflen = len + sizeof(*u.set);
 768         if (buflen < CONTROL_BUFFER_SIZE)
 769                 buflen = CONTROL_BUFFER_SIZE;
 770
 771         if (buflen > COMMAND_BUFFER_SIZE) {
 772                 u.buf = kmalloc(buflen, GFP_KERNEL);
 773                 if (!u.buf)
 774                         return -ENOMEM;
 775         } else {
 776                 u.buf = priv->command_buffer;
 777         }
 778
 779         mutex_lock(&priv->command_lock);
 780
 781         memset(u.set, 0, sizeof *u.set);
 782         u.set->msg_type = RNDIS_MSG_SET;
 783         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 784         u.set->oid = oid;
 785         u.set->len = cpu_to_le32(len);
 786         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 787         u.set->handle = cpu_to_le32(0);
 788         memcpy(u.buf + sizeof(*u.set), data, len);
 789
 790         priv->current_command_oid = oid;
 791         ret = rndis_command(dev, u.header, buflen);
 792         priv->current_command_oid = 0;
 793         if (ret < 0)
 794                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 795                            __func__, oid_to_string(oid), ret,
 796                            le32_to_cpu(u.set_c->status));
 797
 798         if (ret == 0) {
 799                 ret = rndis_error_status(u.set_c->status);
 800
 801                 if (ret < 0)
 802                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 803                                    __func__, oid_to_string(oid),
 804                                    le32_to_cpu(u.set_c->status), ret);
 805         }
 806
 807         mutex_unlock(&priv->command_lock);
 808
 809         if (u.buf != priv->command_buffer)
 810                 kfree(u.buf);
 811         return ret;
 812 }
 813
 814 static int rndis_reset(struct usbnet *usbdev)
 815 {
 816         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 817         struct rndis_reset *reset;
 818         int ret;
 819
 820         mutex_lock(&priv->command_lock);
 821
 822         reset = (void *)priv->command_buffer;
 823         memset(reset, 0, sizeof(*reset));
 824         reset->msg_type = RNDIS_MSG_RESET;
 825         reset->msg_len = cpu_to_le32(sizeof(*reset));
 826         priv->current_command_oid = 0;
 827         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 828
 829         mutex_unlock(&priv->command_lock);
 830
 831         if (ret < 0)
 832                 return ret;
 833         return 0;
 834 }
 835
 836 /*
 837  * Specs say that we can only set config parameters only soon after device
 838  * initialization.
 839  *   value_type: 0 = u32, 2 = unicode string
 840  */
 841 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 842                                                 int value_type, void *value)
 843 {
 844         struct ndis_config_param *infobuf;
 845         int value_len, info_len, param_len, ret, i;
 846         __le16 *unibuf;
 847         __le32 *dst_value;
 848
 849         if (value_type == 0)
 850                 value_len = sizeof(__le32);
 851         else if (value_type == 2)
 852                 value_len = strlen(value) * sizeof(__le16);
 853         else
 854                 return -EINVAL;
 855
 856         param_len = strlen(param) * sizeof(__le16);
 857         info_len = sizeof(*infobuf) + param_len + value_len;
 858
 859 #ifdef DEBUG
 860         info_len += 12;
 861 #endif
 862         infobuf = kmalloc(info_len, GFP_KERNEL);
 863         if (!infobuf)
 864                 return -ENOMEM;
 865
 866 #ifdef DEBUG
 867         info_len -= 12;
 868         /* extra 12 bytes are for padding (debug output) */
 869         memset(infobuf, 0xCC, info_len + 12);
 870 #endif
 871
 872         if (value_type == 2)
 873                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 874                            param, (u8 *)value);
 875         else
 876                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 877                            param, *(u32 *)value);
 878
 879         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 880         infobuf->name_length = cpu_to_le32(param_len);
 881         infobuf->type = cpu_to_le32(value_type);
 882         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 883         infobuf->value_length = cpu_to_le32(value_len);
 884
 885         /* simple string to unicode string conversion */
 886         unibuf = (void *)infobuf + sizeof(*infobuf);
 887         for (i = 0; i < param_len / sizeof(__le16); i++)
 888                 unibuf[i] = cpu_to_le16(param[i]);
 889
 890         if (value_type == 2) {
 891                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 892                 for (i = 0; i < value_len / sizeof(__le16); i++)
 893                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 894         } else {
 895                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 896                 *dst_value = cpu_to_le32(*(u32 *)value);
 897         }
 898
 899 #ifdef DEBUG
 900         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 901         for (i = 0; i < info_len; i += 12) {
 902                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 903                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 904                            cpu_to_be32(tmp[0]),
 905                            cpu_to_be32(tmp[1]),
 906                            cpu_to_be32(tmp[2]));
 907         }
 908 #endif
 909
 910         ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
 911                                                         infobuf, info_len);
 912         if (ret != 0)
 913                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 914                            ret);
 915
 916         kfree(infobuf);
 917         return ret;
 918 }
 919
 920 static int rndis_set_config_parameter_str(struct usbnet *dev,
 921                                                 char *param, char *value)
 922 {
 923         return rndis_set_config_parameter(dev, param, 2, value);
 924 }
 925
 926 /*
 927  * data conversion functions
 928  */
 929 static int level_to_qual(int level)
 930 {
 931         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 932         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 933 }
 934
 935 /*
 936  * common functions
 937  */
 938 static int set_infra_mode(struct usbnet *usbdev, int mode);
 939 static void restore_keys(struct usbnet *usbdev);
 940 static int rndis_check_bssid_list(struct usbnet *usbdev);
 941
 942 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 943 {
 944         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 945         int ret;
 946
 947         ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
 948         if (ret < 0) {
 949                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 950                 return ret;
 951         }
 952         if (ret == 0) {
 953                 memcpy(&priv->essid, ssid, sizeof(priv->essid));
 954                 priv->radio_on = true;
 955                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
 956         }
 957
 958         return ret;
 959 }
 960
 961 static int set_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
 962 {
 963         int ret;
 964
 965         ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
 966         if (ret < 0) {
 967                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
 968                             bssid, ret);
 969                 return ret;
 970         }
 971
 972         return ret;
 973 }
 974
 975 static int clear_bssid(struct usbnet *usbdev)
 976 {
 977         u8 broadcast_mac[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
 978
 979         return set_bssid(usbdev, broadcast_mac);
 980 }
 981
 982 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
 983 {
 984         int ret, len;
 985
 986         len = ETH_ALEN;
 987         ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
 988
 989         if (ret != 0)
 990                 memset(bssid, 0, ETH_ALEN);
 991
 992         return ret;
 993 }
 994
 995 static int get_association_info(struct usbnet *usbdev,
 996                         struct ndis_80211_assoc_info *info, int len)
 997 {
 998         return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
 999                                 info, &len);
1000 }
1001
1002 static bool is_associated(struct usbnet *usbdev)
1003 {
1004         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1005         u8 bssid[ETH_ALEN];
1006         int ret;
1007
1008         if (!priv->radio_on)
1009                 return false;
1010
1011         ret = get_bssid(usbdev, bssid);
1012
1013         return (ret == 0 && !is_zero_ether_addr(bssid));
1014 }
1015
1016 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1017 {
1018         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1019         struct ndis_80211_ssid ssid;
1020         int i, ret = 0;
1021
1022         if (priv->radio_on) {
1023                 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1024                 if (ret == 0) {
1025                         priv->radio_on = false;
1026                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1027                                    __func__);
1028
1029                         if (reset_ssid)
1030                                 msleep(100);
1031                 }
1032         }
1033
1034         /* disassociate causes radio to be turned off; if reset_ssid
1035          * is given, set random ssid to enable radio */
1036         if (reset_ssid) {
1037                 /* Set device to infrastructure mode so we don't get ad-hoc
1038                  * 'media connect' indications with the random ssid.
1039                  */
1040                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1041
1042                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1043                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1044                 ssid.essid[0] = 0x1;
1045                 ssid.essid[1] = 0xff;
1046                 for (i = 2; i < sizeof(ssid.essid); i++)
1047                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1048                 ret = set_essid(usbdev, &ssid);
1049         }
1050         return ret;
1051 }
1052
1053 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1054                                 enum nl80211_auth_type auth_type, int keymgmt)
1055 {
1056         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1057         __le32 tmp;
1058         int auth_mode, ret;
1059
1060         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1061                    __func__, wpa_version, auth_type, keymgmt);
1062
1063         if (wpa_version & NL80211_WPA_VERSION_2) {
1064                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1065                         auth_mode = NDIS_80211_AUTH_WPA2;
1066                 else
1067                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1068         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1069                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1070                         auth_mode = NDIS_80211_AUTH_WPA;
1071                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1072                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1073                 else
1074                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1075         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1076                 auth_mode = NDIS_80211_AUTH_SHARED;
1077         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1078                 auth_mode = NDIS_80211_AUTH_OPEN;
1079         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1080                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1081         else
1082                 return -ENOTSUPP;
1083
1084         tmp = cpu_to_le32(auth_mode);
1085         ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1086                                                                 sizeof(tmp));
1087         if (ret != 0) {
1088                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1089                             ret);
1090                 return ret;
1091         }
1092
1093         priv->wpa_version = wpa_version;
1094         priv->wpa_auth_type = auth_type;
1095         priv->wpa_keymgmt = keymgmt;
1096
1097         return 0;
1098 }
1099
1100 static int set_priv_filter(struct usbnet *usbdev)
1101 {
1102         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1103         __le32 tmp;
1104
1105         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1106                    __func__, priv->wpa_version);
1107
1108         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1109             priv->wpa_version & NL80211_WPA_VERSION_1)
1110                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1111         else
1112                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1113
1114         return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1115                                                                 sizeof(tmp));
1116 }
1117
1118 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1119 {
1120         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1121         __le32 tmp;
1122         int encr_mode, ret;
1123
1124         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1125                    __func__, pairwise, groupwise);
1126
1127         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1128                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1129         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1130                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1131         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1132                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1133         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1134                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1135         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1136                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1137         else
1138                 encr_mode = NDIS_80211_ENCR_DISABLED;
1139
1140         tmp = cpu_to_le32(encr_mode);
1141         ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1142                                                                 sizeof(tmp));
1143         if (ret != 0) {
1144                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1145                             ret);
1146                 return ret;
1147         }
1148
1149         priv->wpa_cipher_pair = pairwise;
1150         priv->wpa_cipher_group = groupwise;
1151         return 0;
1152 }
1153
1154 static int set_infra_mode(struct usbnet *usbdev, int mode)
1155 {
1156         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1157         __le32 tmp;
1158         int ret;
1159
1160         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1161                    __func__, priv->infra_mode);
1162
1163         tmp = cpu_to_le32(mode);
1164         ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1165                                                                 sizeof(tmp));
1166         if (ret != 0) {
1167                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1168                             ret);
1169                 return ret;
1170         }
1171
1172         /* NDIS drivers clear keys when infrastructure mode is
1173          * changed. But Linux tools assume otherwise. So set the
1174          * keys */
1175         restore_keys(usbdev);
1176
1177         priv->infra_mode = mode;
1178         return 0;
1179 }
1180
1181 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1182 {
1183         __le32 tmp;
1184
1185         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1186
1187         if (rts_threshold < 0 || rts_threshold > 2347)
1188                 rts_threshold = 2347;
1189
1190         tmp = cpu_to_le32(rts_threshold);
1191         return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1192                                                                 sizeof(tmp));
1193 }
1194
1195 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1196 {
1197         __le32 tmp;
1198
1199         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1200
1201         if (frag_threshold < 256 || frag_threshold > 2346)
1202                 frag_threshold = 2346;
1203
1204         tmp = cpu_to_le32(frag_threshold);
1205         return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1206                                                                 sizeof(tmp));
1207 }
1208
1209 static void set_default_iw_params(struct usbnet *usbdev)
1210 {
1211         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1212         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1213                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1214         set_priv_filter(usbdev);
1215         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1216 }
1217
1218 static int deauthenticate(struct usbnet *usbdev)
1219 {
1220         int ret;
1221
1222         ret = disassociate(usbdev, true);
1223         set_default_iw_params(usbdev);
1224         return ret;
1225 }
1226
1227 static int set_channel(struct usbnet *usbdev, int channel)
1228 {
1229         struct ndis_80211_conf config;
1230         unsigned int dsconfig;
1231         int len, ret;
1232
1233         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1234
1235         /* this OID is valid only when not associated */
1236         if (is_associated(usbdev))
1237                 return 0;
1238
1239         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1240
1241         len = sizeof(config);
1242         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1243         if (ret < 0) {
1244                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1245                            __func__);
1246                 return ret;
1247         }
1248
1249         config.ds_config = cpu_to_le32(dsconfig);
1250         ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1251                                                                 sizeof(config));
1252
1253         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1254
1255         return ret;
1256 }
1257
1258 /* index must be 0 - N, as per NDIS  */
1259 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1260                                                                 int index)
1261 {
1262         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1263         struct ndis_80211_wep_key ndis_key;
1264         u32 cipher;
1265         int ret;
1266
1267         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1268                    __func__, index, key_len);
1269
1270         if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1271                 return -EINVAL;
1272
1273         if (key_len == 5)
1274                 cipher = WLAN_CIPHER_SUITE_WEP40;
1275         else
1276                 cipher = WLAN_CIPHER_SUITE_WEP104;
1277
1278         memset(&ndis_key, 0, sizeof(ndis_key));
1279
1280         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1281         ndis_key.length = cpu_to_le32(key_len);
1282         ndis_key.index = cpu_to_le32(index);
1283         memcpy(&ndis_key.material, key, key_len);
1284
1285         if (index == priv->encr_tx_key_index) {
1286                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1287                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1288                                                         RNDIS_WLAN_ALG_NONE);
1289                 if (ret)
1290                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1291                                     ret);
1292         }
1293
1294         ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1295                                                         sizeof(ndis_key));
1296         if (ret != 0) {
1297                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1298                             index + 1, ret);
1299                 return ret;
1300         }
1301
1302         priv->encr_keys[index].len = key_len;
1303         priv->encr_keys[index].cipher = cipher;
1304         memcpy(&priv->encr_keys[index].material, key, key_len);
1305         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1306
1307         return 0;
1308 }
1309
1310 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1311                         int index, const u8 *addr, const u8 *rx_seq,
1312                         int seq_len, u32 cipher, __le32 flags)
1313 {
1314         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1315         struct ndis_80211_key ndis_key;
1316         bool is_addr_ok;
1317         int ret;
1318
1319         if (index < 0 || index >= 4) {
1320                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1321                            __func__, index);
1322                 return -EINVAL;
1323         }
1324         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1325                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1326                            __func__, key_len);
1327                 return -EINVAL;
1328         }
1329         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1330                 if (!rx_seq || seq_len <= 0) {
1331                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1332                                    __func__);
1333                         return -EINVAL;
1334                 }
1335                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1336                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1337                         return -EINVAL;
1338                 }
1339         }
1340
1341         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1342                                         !is_broadcast_ether_addr(addr);
1343         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1344                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1345                            __func__, addr);
1346                 return -EINVAL;
1347         }
1348
1349         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1350                    __func__, index,
1351                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1352                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1353                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1354
1355         memset(&ndis_key, 0, sizeof(ndis_key));
1356
1357         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1358                                 sizeof(ndis_key.material) + key_len);
1359         ndis_key.length = cpu_to_le32(key_len);
1360         ndis_key.index = cpu_to_le32(index) | flags;
1361
1362         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1363                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1364                  * different order than NDIS spec, so swap the order here. */
1365                 memcpy(ndis_key.material, key, 16);
1366                 memcpy(ndis_key.material + 16, key + 24, 8);
1367                 memcpy(ndis_key.material + 24, key + 16, 8);
1368         } else
1369                 memcpy(ndis_key.material, key, key_len);
1370
1371         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1372                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1373
1374         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1375                 /* pairwise key */
1376                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1377         } else {
1378                 /* group key */
1379                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1380                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1381                 else
1382                         get_bssid(usbdev, ndis_key.bssid);
1383         }
1384
1385         ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1386                                         le32_to_cpu(ndis_key.size));
1387         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1388                    __func__, ret);
1389         if (ret != 0)
1390                 return ret;
1391
1392         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1393         priv->encr_keys[index].len = key_len;
1394         priv->encr_keys[index].cipher = cipher;
1395         memcpy(&priv->encr_keys[index].material, key, key_len);
1396         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1397                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1398         else
1399                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1400
1401         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1402                 priv->encr_tx_key_index = index;
1403
1404         return 0;
1405 }
1406
1407 static int restore_key(struct usbnet *usbdev, int key_idx)
1408 {
1409         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1410         struct rndis_wlan_encr_key key;
1411
1412         if (is_wpa_key(priv, key_idx))
1413                 return 0;
1414
1415         key = priv->encr_keys[key_idx];
1416
1417         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1418
1419         if (key.len == 0)
1420                 return 0;
1421
1422         return add_wep_key(usbdev, key.material, key.len, key_idx);
1423 }
1424
1425 static void restore_keys(struct usbnet *usbdev)
1426 {
1427         int i;
1428
1429         for (i = 0; i < 4; i++)
1430                 restore_key(usbdev, i);
1431 }
1432
1433 static void clear_key(struct rndis_wlan_private *priv, int idx)
1434 {
1435         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1436 }
1437
1438 /* remove_key is for both wep and wpa */
1439 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1440 {
1441         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1442         struct ndis_80211_remove_key remove_key;
1443         __le32 keyindex;
1444         bool is_wpa;
1445         int ret;
1446
1447         if (priv->encr_keys[index].len == 0)
1448                 return 0;
1449
1450         is_wpa = is_wpa_key(priv, index);
1451
1452         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1453                    __func__, index, is_wpa ? "wpa" : "wep",
1454                    priv->encr_keys[index].len);
1455
1456         clear_key(priv, index);
1457
1458         if (is_wpa) {
1459                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1460                 remove_key.index = cpu_to_le32(index);
1461                 if (bssid) {
1462                         /* pairwise key */
1463                         if (!is_broadcast_ether_addr(bssid))
1464                                 remove_key.index |=
1465                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1466                         memcpy(remove_key.bssid, bssid,
1467                                         sizeof(remove_key.bssid));
1468                 } else
1469                         memset(remove_key.bssid, 0xff,
1470                                                 sizeof(remove_key.bssid));
1471
1472                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1473                                                         sizeof(remove_key));
1474                 if (ret != 0)
1475                         return ret;
1476         } else {
1477                 keyindex = cpu_to_le32(index);
1478                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1479                                                         sizeof(keyindex));
1480                 if (ret != 0) {
1481                         netdev_warn(usbdev->net,
1482                                     "removing encryption key %d failed (%08X)\n",
1483                                     index, ret);
1484                         return ret;
1485                 }
1486         }
1487
1488         /* if it is transmit key, disable encryption */
1489         if (index == priv->encr_tx_key_index)
1490                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1491
1492         return 0;
1493 }
1494
1495 static void set_multicast_list(struct usbnet *usbdev)
1496 {
1497         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1498         struct dev_mc_list *mclist;
1499         __le32 filter;
1500         int ret, i, size;
1501         char *buf;
1502
1503         filter = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
1504
1505         netif_addr_lock_bh(usbdev->net);
1506         if (usbdev->net->flags & IFF_PROMISC) {
1507                 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1508                         RNDIS_PACKET_TYPE_ALL_LOCAL;
1509         } else if (usbdev->net->flags & IFF_ALLMULTI ||
1510                    netdev_mc_count(usbdev->net) > priv->multicast_size) {
1511                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1512         } else if (!netdev_mc_empty(usbdev->net)) {
1513                 size = min(priv->multicast_size, netdev_mc_count(usbdev->net));
1514                 buf = kmalloc(size * ETH_ALEN, GFP_KERNEL);
1515                 if (!buf) {
1516                         netdev_warn(usbdev->net,
1517                                     "couldn't alloc %d bytes of memory\n",
1518                                     size * ETH_ALEN);
1519                         netif_addr_unlock_bh(usbdev->net);
1520                         return;
1521                 }
1522
1523                 i = 0;
1524                 netdev_for_each_mc_addr(mclist, usbdev->net) {
1525                         if (i == size)
1526                                 break;
1527                         memcpy(buf + i++ * ETH_ALEN, mclist->dmi_addr, ETH_ALEN);
1528                 }
1529
1530                 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, buf,
1531                                                                 i * ETH_ALEN);
1532                 if (ret == 0 && i > 0)
1533                         filter |= RNDIS_PACKET_TYPE_MULTICAST;
1534                 else
1535                         filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1536
1537                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1538                            i, priv->multicast_size, ret);
1539
1540                 kfree(buf);
1541         }
1542         netif_addr_unlock_bh(usbdev->net);
1543
1544         ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1545                                                         sizeof(filter));
1546         if (ret < 0) {
1547                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1548                             le32_to_cpu(filter));
1549         }
1550
1551         netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1552                    le32_to_cpu(filter), ret);
1553 }
1554
1555 /*
1556  * cfg80211 ops
1557  */
1558 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1559                                         struct net_device *dev,
1560                                         enum nl80211_iftype type, u32 *flags,
1561                                         struct vif_params *params)
1562 {
1563         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1564         struct usbnet *usbdev = priv->usbdev;
1565         int mode;
1566
1567         switch (type) {
1568         case NL80211_IFTYPE_ADHOC:
1569                 mode = NDIS_80211_INFRA_ADHOC;
1570                 break;
1571         case NL80211_IFTYPE_STATION:
1572                 mode = NDIS_80211_INFRA_INFRA;
1573                 break;
1574         default:
1575                 return -EINVAL;
1576         }
1577
1578         priv->wdev.iftype = type;
1579
1580         return set_infra_mode(usbdev, mode);
1581 }
1582
1583 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1584 {
1585         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1586         struct usbnet *usbdev = priv->usbdev;
1587         int err;
1588
1589         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1590                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1591                 if (err < 0)
1592                         return err;
1593         }
1594
1595         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1596                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1597                 if (err < 0)
1598                         return err;
1599         }
1600
1601         return 0;
1602 }
1603
1604 static int rndis_set_tx_power(struct wiphy *wiphy, enum tx_power_setting type,
1605                                 int dbm)
1606 {
1607         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1608         struct usbnet *usbdev = priv->usbdev;
1609
1610         netdev_dbg(usbdev->net, "%s(): type:0x%x dbm:%i\n",
1611                    __func__, type, dbm);
1612
1613         /* Device doesn't support changing txpower after initialization, only
1614          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1615          * currently used.
1616          */
1617         if (type == TX_POWER_AUTOMATIC || dbm == get_bcm4320_power_dbm(priv)) {
1618                 if (!priv->radio_on)
1619                         disassociate(usbdev, true); /* turn on radio */
1620
1621                 return 0;
1622         }
1623
1624         return -ENOTSUPP;
1625 }
1626
1627 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1628 {
1629         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1630         struct usbnet *usbdev = priv->usbdev;
1631
1632         *dbm = get_bcm4320_power_dbm(priv);
1633
1634         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1635
1636         return 0;
1637 }
1638
1639 #define SCAN_DELAY_JIFFIES (6 * HZ)
1640 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1641                         struct cfg80211_scan_request *request)
1642 {
1643         struct usbnet *usbdev = netdev_priv(dev);
1644         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1645         int ret;
1646         __le32 tmp;
1647
1648         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1649
1650         /* Get current bssid list from device before new scan, as new scan
1651          * clears internal bssid list.
1652          */
1653         rndis_check_bssid_list(usbdev);
1654
1655         if (!request)
1656                 return -EINVAL;
1657
1658         if (priv->scan_request && priv->scan_request != request)
1659                 return -EBUSY;
1660
1661         priv->scan_request = request;
1662
1663         tmp = cpu_to_le32(1);
1664         ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1665                                                         sizeof(tmp));
1666         if (ret == 0) {
1667                 /* Wait before retrieving scan results from device */
1668                 queue_delayed_work(priv->workqueue, &priv->scan_work,
1669                         SCAN_DELAY_JIFFIES);
1670         }
1671
1672         return ret;
1673 }
1674
1675 static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1676                                         struct ndis_80211_bssid_ex *bssid)
1677 {
1678         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1679         struct ieee80211_channel *channel;
1680         s32 signal;
1681         u64 timestamp;
1682         u16 capability;
1683         u16 beacon_interval;
1684         struct ndis_80211_fixed_ies *fixed;
1685         int ie_len, bssid_len;
1686         u8 *ie;
1687
1688         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM]\n",
1689                    bssid->ssid.essid, bssid->mac);
1690
1691         /* parse bssid structure */
1692         bssid_len = le32_to_cpu(bssid->length);
1693
1694         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1695                         sizeof(struct ndis_80211_fixed_ies))
1696                 return NULL;
1697
1698         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1699
1700         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1701         ie_len = min(bssid_len - (int)sizeof(*bssid),
1702                                         (int)le32_to_cpu(bssid->ie_length));
1703         ie_len -= sizeof(struct ndis_80211_fixed_ies);
1704         if (ie_len < 0)
1705                 return NULL;
1706
1707         /* extract data for cfg80211_inform_bss */
1708         channel = ieee80211_get_channel(priv->wdev.wiphy,
1709                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1710         if (!channel)
1711                 return NULL;
1712
1713         signal = level_to_qual(le32_to_cpu(bssid->rssi));
1714         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1715         capability = le16_to_cpu(fixed->capabilities);
1716         beacon_interval = le16_to_cpu(fixed->beacon_interval);
1717
1718         return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
1719                 timestamp, capability, beacon_interval, ie, ie_len, signal,
1720                 GFP_KERNEL);
1721 }
1722
1723 static int rndis_check_bssid_list(struct usbnet *usbdev)
1724 {
1725         void *buf = NULL;
1726         struct ndis_80211_bssid_list_ex *bssid_list;
1727         struct ndis_80211_bssid_ex *bssid;
1728         int ret = -EINVAL, len, count, bssid_len;
1729         bool resized = false;
1730
1731         netdev_dbg(usbdev->net, "check_bssid_list\n");
1732
1733         len = CONTROL_BUFFER_SIZE;
1734 resize_buf:
1735         buf = kmalloc(len, GFP_KERNEL);
1736         if (!buf) {
1737                 ret = -ENOMEM;
1738                 goto out;
1739         }
1740
1741         ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
1742         if (ret != 0)
1743                 goto out;
1744
1745         if (!resized && len > CONTROL_BUFFER_SIZE) {
1746                 resized = true;
1747                 kfree(buf);
1748                 goto resize_buf;
1749         }
1750
1751         bssid_list = buf;
1752         bssid = bssid_list->bssid;
1753         bssid_len = le32_to_cpu(bssid->length);
1754         count = le32_to_cpu(bssid_list->num_items);
1755         netdev_dbg(usbdev->net, "check_bssid_list: %d BSSIDs found (buflen: %d)\n",
1756                    count, len);
1757
1758         while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
1759                 rndis_bss_info_update(usbdev, bssid);
1760
1761                 bssid = (void *)bssid + bssid_len;
1762                 bssid_len = le32_to_cpu(bssid->length);
1763                 count--;
1764         }
1765
1766 out:
1767         kfree(buf);
1768         return ret;
1769 }
1770
1771 static void rndis_get_scan_results(struct work_struct *work)
1772 {
1773         struct rndis_wlan_private *priv =
1774                 container_of(work, struct rndis_wlan_private, scan_work.work);
1775         struct usbnet *usbdev = priv->usbdev;
1776         int ret;
1777
1778         netdev_dbg(usbdev->net, "get_scan_results\n");
1779
1780         if (!priv->scan_request)
1781                 return;
1782
1783         ret = rndis_check_bssid_list(usbdev);
1784
1785         cfg80211_scan_done(priv->scan_request, ret < 0);
1786
1787         priv->scan_request = NULL;
1788 }
1789
1790 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
1791                                         struct cfg80211_connect_params *sme)
1792 {
1793         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1794         struct usbnet *usbdev = priv->usbdev;
1795         struct ieee80211_channel *channel = sme->channel;
1796         struct ndis_80211_ssid ssid;
1797         int pairwise = RNDIS_WLAN_ALG_NONE;
1798         int groupwise = RNDIS_WLAN_ALG_NONE;
1799         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
1800         int length, i, ret, chan = -1;
1801
1802         if (channel)
1803                 chan = ieee80211_frequency_to_channel(channel->center_freq);
1804
1805         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
1806         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
1807                 pairwise |=
1808                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
1809
1810         if (sme->crypto.n_ciphers_pairwise > 0 &&
1811                         pairwise == RNDIS_WLAN_ALG_NONE) {
1812                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
1813                 return -ENOTSUPP;
1814         }
1815
1816         for (i = 0; i < sme->crypto.n_akm_suites; i++)
1817                 keymgmt |=
1818                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
1819
1820         if (sme->crypto.n_akm_suites > 0 &&
1821                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
1822                 netdev_err(usbdev->net, "Invalid keymgmt\n");
1823                 return -ENOTSUPP;
1824         }
1825
1826         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
1827                    sme->ssid, sme->bssid, chan,
1828                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
1829                    groupwise, pairwise, keymgmt);
1830
1831         if (is_associated(usbdev))
1832                 disassociate(usbdev, false);
1833
1834         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1835         if (ret < 0) {
1836                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
1837                            ret);
1838                 goto err_turn_radio_on;
1839         }
1840
1841         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
1842                                                                 keymgmt);
1843         if (ret < 0) {
1844                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
1845                            ret);
1846                 goto err_turn_radio_on;
1847         }
1848
1849         set_priv_filter(usbdev);
1850
1851         ret = set_encr_mode(usbdev, pairwise, groupwise);
1852         if (ret < 0) {
1853                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
1854                            ret);
1855                 goto err_turn_radio_on;
1856         }
1857
1858         if (channel) {
1859                 ret = set_channel(usbdev, chan);
1860                 if (ret < 0) {
1861                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
1862                                    ret);
1863                         goto err_turn_radio_on;
1864                 }
1865         }
1866
1867         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
1868                 priv->encr_tx_key_index = sme->key_idx;
1869                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
1870                 if (ret < 0) {
1871                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
1872                                    ret, sme->key_len, sme->key_idx);
1873                         goto err_turn_radio_on;
1874                 }
1875         }
1876
1877         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
1878                                 !is_broadcast_ether_addr(sme->bssid)) {
1879                 ret = set_bssid(usbdev, sme->bssid);
1880                 if (ret < 0) {
1881                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
1882                                    ret);
1883                         goto err_turn_radio_on;
1884                 }
1885         } else
1886                 clear_bssid(usbdev);
1887
1888         length = sme->ssid_len;
1889         if (length > NDIS_802_11_LENGTH_SSID)
1890                 length = NDIS_802_11_LENGTH_SSID;
1891
1892         memset(&ssid, 0, sizeof(ssid));
1893         ssid.length = cpu_to_le32(length);
1894         memcpy(ssid.essid, sme->ssid, length);
1895
1896         /* Pause and purge rx queue, so we don't pass packets before
1897          * 'media connect'-indication.
1898          */
1899         usbnet_pause_rx(usbdev);
1900         usbnet_purge_paused_rxq(usbdev);
1901
1902         ret = set_essid(usbdev, &ssid);
1903         if (ret < 0)
1904                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
1905         return ret;
1906
1907 err_turn_radio_on:
1908         disassociate(usbdev, true);
1909
1910         return ret;
1911 }
1912
1913 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
1914                                                                 u16 reason_code)
1915 {
1916         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1917         struct usbnet *usbdev = priv->usbdev;
1918
1919         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
1920
1921         priv->connected = false;
1922         memset(priv->bssid, 0, ETH_ALEN);
1923
1924         return deauthenticate(usbdev);
1925 }
1926
1927 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1928                                         struct cfg80211_ibss_params *params)
1929 {
1930         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1931         struct usbnet *usbdev = priv->usbdev;
1932         struct ieee80211_channel *channel = params->channel;
1933         struct ndis_80211_ssid ssid;
1934         enum nl80211_auth_type auth_type;
1935         int ret, alg, length, chan = -1;
1936
1937         if (channel)
1938                 chan = ieee80211_frequency_to_channel(channel->center_freq);
1939
1940         /* TODO: How to handle ad-hoc encryption?
1941          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
1942          * pre-shared for encryption (open/shared/wpa), is key set before
1943          * join_ibss? Which auth_type to use (not in params)? What about WPA?
1944          */
1945         if (params->privacy) {
1946                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
1947                 alg = RNDIS_WLAN_ALG_WEP;
1948         } else {
1949                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1950                 alg = RNDIS_WLAN_ALG_NONE;
1951         }
1952
1953         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
1954                    params->ssid, params->bssid, chan, params->privacy);
1955
1956         if (is_associated(usbdev))
1957                 disassociate(usbdev, false);
1958
1959         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
1960         if (ret < 0) {
1961                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
1962                            ret);
1963                 goto err_turn_radio_on;
1964         }
1965
1966         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
1967         if (ret < 0) {
1968                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
1969                            ret);
1970                 goto err_turn_radio_on;
1971         }
1972
1973         set_priv_filter(usbdev);
1974
1975         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
1976         if (ret < 0) {
1977                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
1978                            ret);
1979                 goto err_turn_radio_on;
1980         }
1981
1982         if (channel) {
1983                 ret = set_channel(usbdev, chan);
1984                 if (ret < 0) {
1985                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
1986                                    ret);
1987                         goto err_turn_radio_on;
1988                 }
1989         }
1990
1991         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
1992                                 !is_broadcast_ether_addr(params->bssid)) {
1993                 ret = set_bssid(usbdev, params->bssid);
1994                 if (ret < 0) {
1995                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
1996                                    ret);
1997                         goto err_turn_radio_on;
1998                 }
1999         } else
2000                 clear_bssid(usbdev);
2001
2002         length = params->ssid_len;
2003         if (length > NDIS_802_11_LENGTH_SSID)
2004                 length = NDIS_802_11_LENGTH_SSID;
2005
2006         memset(&ssid, 0, sizeof(ssid));
2007         ssid.length = cpu_to_le32(length);
2008         memcpy(ssid.essid, params->ssid, length);
2009
2010         /* Don't need to pause rx queue for ad-hoc. */
2011         usbnet_purge_paused_rxq(usbdev);
2012         usbnet_resume_rx(usbdev);
2013
2014         ret = set_essid(usbdev, &ssid);
2015         if (ret < 0)
2016                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2017                            ret);
2018         return ret;
2019
2020 err_turn_radio_on:
2021         disassociate(usbdev, true);
2022
2023         return ret;
2024 }
2025
2026 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2027 {
2028         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2029         struct usbnet *usbdev = priv->usbdev;
2030
2031         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2032
2033         priv->connected = false;
2034         memset(priv->bssid, 0, ETH_ALEN);
2035
2036         return deauthenticate(usbdev);
2037 }
2038
2039 static int rndis_set_channel(struct wiphy *wiphy,
2040         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2041 {
2042         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2043         struct usbnet *usbdev = priv->usbdev;
2044
2045         return set_channel(usbdev,
2046                         ieee80211_frequency_to_channel(chan->center_freq));
2047 }
2048
2049 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2050                                         u8 key_index, const u8 *mac_addr,
2051                                         struct key_params *params)
2052 {
2053         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2054         struct usbnet *usbdev = priv->usbdev;
2055         __le32 flags;
2056
2057         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2058                    __func__, key_index, mac_addr, params->cipher);
2059
2060         switch (params->cipher) {
2061         case WLAN_CIPHER_SUITE_WEP40:
2062         case WLAN_CIPHER_SUITE_WEP104:
2063                 return add_wep_key(usbdev, params->key, params->key_len,
2064                                                                 key_index);
2065         case WLAN_CIPHER_SUITE_TKIP:
2066         case WLAN_CIPHER_SUITE_CCMP:
2067                 flags = 0;
2068
2069                 if (params->seq && params->seq_len > 0)
2070                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2071                 if (mac_addr)
2072                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2073                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2074
2075                 return add_wpa_key(usbdev, params->key, params->key_len,
2076                                 key_index, mac_addr, params->seq,
2077                                 params->seq_len, params->cipher, flags);
2078         default:
2079                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2080                            __func__, params->cipher);
2081                 return -ENOTSUPP;
2082         }
2083 }
2084
2085 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2086                                         u8 key_index, const u8 *mac_addr)
2087 {
2088         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2089         struct usbnet *usbdev = priv->usbdev;
2090
2091         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2092
2093         return remove_key(usbdev, key_index, mac_addr);
2094 }
2095
2096 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2097                                                                 u8 key_index)
2098 {
2099         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2100         struct usbnet *usbdev = priv->usbdev;
2101         struct rndis_wlan_encr_key key;
2102
2103         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2104
2105         priv->encr_tx_key_index = key_index;
2106
2107         key = priv->encr_keys[key_index];
2108
2109         return add_wep_key(usbdev, key.material, key.len, key_index);
2110 }
2111
2112 static void rndis_fill_station_info(struct usbnet *usbdev,
2113                                                 struct station_info *sinfo)
2114 {
2115         __le32 linkspeed, rssi;
2116         int ret, len;
2117
2118         memset(sinfo, 0, sizeof(*sinfo));
2119
2120         len = sizeof(linkspeed);
2121         ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2122         if (ret == 0) {
2123                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2124                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2125         }
2126
2127         len = sizeof(rssi);
2128         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2129         if (ret == 0) {
2130                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2131                 sinfo->filled |= STATION_INFO_SIGNAL;
2132         }
2133 }
2134
2135 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2136                                         u8 *mac, struct station_info *sinfo)
2137 {
2138         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2139         struct usbnet *usbdev = priv->usbdev;
2140
2141         if (compare_ether_addr(priv->bssid, mac))
2142                 return -ENOENT;
2143
2144         rndis_fill_station_info(usbdev, sinfo);
2145
2146         return 0;
2147 }
2148
2149 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2150                                int idx, u8 *mac, struct station_info *sinfo)
2151 {
2152         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2153         struct usbnet *usbdev = priv->usbdev;
2154
2155         if (idx != 0)
2156                 return -ENOENT;
2157
2158         memcpy(mac, priv->bssid, ETH_ALEN);
2159
2160         rndis_fill_station_info(usbdev, sinfo);
2161
2162         return 0;
2163 }
2164
2165 /*
2166  * workers, indication handlers, device poller
2167  */
2168 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2169 {
2170         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2171         struct ndis_80211_assoc_info *info;
2172         u8 assoc_buf[sizeof(*info) + IW_CUSTOM_MAX + 32];
2173         u8 bssid[ETH_ALEN];
2174         int resp_ie_len, req_ie_len;
2175         u8 *req_ie, *resp_ie;
2176         int ret, offset;
2177         bool roamed = false;
2178
2179         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2180                 /* received media connect indication while connected, either
2181                  * device reassociated with same AP or roamed to new. */
2182                 roamed = true;
2183         }
2184
2185         req_ie_len = 0;
2186         resp_ie_len = 0;
2187         req_ie = NULL;
2188         resp_ie = NULL;
2189
2190         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2191                 memset(assoc_buf, 0, sizeof(assoc_buf));
2192                 info = (void *)assoc_buf;
2193
2194                 /* Get association info IEs from device and send them back to
2195                  * userspace. */
2196                 ret = get_association_info(usbdev, info, sizeof(assoc_buf));
2197                 if (!ret) {
2198                         req_ie_len = le32_to_cpu(info->req_ie_length);
2199                         if (req_ie_len > 0) {
2200                                 offset = le32_to_cpu(info->offset_req_ies);
2201                                 req_ie = (u8 *)info + offset;
2202                         }
2203
2204                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2205                         if (resp_ie_len > 0) {
2206                                 offset = le32_to_cpu(info->offset_resp_ies);
2207                                 resp_ie = (u8 *)info + offset;
2208                         }
2209                 }
2210         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2211                 return;
2212
2213         ret = get_bssid(usbdev, bssid);
2214         if (ret < 0)
2215                 memset(bssid, 0, sizeof(bssid));
2216
2217         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2218                    bssid, roamed ? " roamed" : "");
2219
2220         /* Internal bss list in device always contains at least the currently
2221          * connected bss and we can get it to cfg80211 with
2222          * rndis_check_bssid_list().
2223          * NOTE: This is true for Broadcom chip, but not mentioned in RNDIS
2224          * spec.
2225          */
2226         rndis_check_bssid_list(usbdev);
2227
2228         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2229                 if (!roamed)
2230                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2231                                                 req_ie_len, resp_ie,
2232                                                 resp_ie_len, 0, GFP_KERNEL);
2233                 else
2234                         cfg80211_roamed(usbdev->net, bssid, req_ie, req_ie_len,
2235                                         resp_ie, resp_ie_len, GFP_KERNEL);
2236         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2237                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2238
2239         priv->connected = true;
2240         memcpy(priv->bssid, bssid, ETH_ALEN);
2241
2242         usbnet_resume_rx(usbdev);
2243         netif_carrier_on(usbdev->net);
2244 }
2245
2246 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2247 {
2248         union iwreq_data evt;
2249
2250         netif_carrier_off(usbdev->net);
2251
2252         evt.data.flags = 0;
2253         evt.data.length = 0;
2254         memset(evt.ap_addr.sa_data, 0, ETH_ALEN);
2255         wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
2256 }
2257
2258 static void rndis_wlan_worker(struct work_struct *work)
2259 {
2260         struct rndis_wlan_private *priv =
2261                 container_of(work, struct rndis_wlan_private, work);
2262         struct usbnet *usbdev = priv->usbdev;
2263
2264         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2265                 rndis_wlan_do_link_up_work(usbdev);
2266
2267         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2268                 rndis_wlan_do_link_down_work(usbdev);
2269
2270         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2271                 set_multicast_list(usbdev);
2272 }
2273
2274 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2275 {
2276         struct usbnet *usbdev = netdev_priv(dev);
2277         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2278
2279         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2280                 return;
2281
2282         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2283         queue_work(priv->workqueue, &priv->work);
2284 }
2285
2286 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2287                                 struct ndis_80211_status_indication *indication,
2288                                 int len)
2289 {
2290         u8 *buf;
2291         const char *type;
2292         int flags, buflen, key_id;
2293         bool pairwise_error, group_error;
2294         struct ndis_80211_auth_request *auth_req;
2295         enum nl80211_key_type key_type;
2296
2297         /* must have at least one array entry */
2298         if (len < offsetof(struct ndis_80211_status_indication, u) +
2299                                 sizeof(struct ndis_80211_auth_request)) {
2300                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2301                             len);
2302                 return;
2303         }
2304
2305         buf = (void *)&indication->u.auth_request[0];
2306         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2307
2308         while (buflen >= sizeof(*auth_req)) {
2309                 auth_req = (void *)buf;
2310                 type = "unknown";
2311                 flags = le32_to_cpu(auth_req->flags);
2312                 pairwise_error = false;
2313                 group_error = false;
2314
2315                 if (flags & 0x1)
2316                         type = "reauth request";
2317                 if (flags & 0x2)
2318                         type = "key update request";
2319                 if (flags & 0x6) {
2320                         pairwise_error = true;
2321                         type = "pairwise_error";
2322                 }
2323                 if (flags & 0xe) {
2324                         group_error = true;
2325                         type = "group_error";
2326                 }
2327
2328                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2329                             type, le32_to_cpu(auth_req->flags));
2330
2331                 if (pairwise_error) {
2332                         key_type = NL80211_KEYTYPE_PAIRWISE;
2333                         key_id = -1;
2334
2335                         cfg80211_michael_mic_failure(usbdev->net,
2336                                                         auth_req->bssid,
2337                                                         key_type, key_id, NULL,
2338                                                         GFP_KERNEL);
2339                 }
2340
2341                 if (group_error) {
2342                         key_type = NL80211_KEYTYPE_GROUP;
2343                         key_id = -1;
2344
2345                         cfg80211_michael_mic_failure(usbdev->net,
2346                                                         auth_req->bssid,
2347                                                         key_type, key_id, NULL,
2348                                                         GFP_KERNEL);
2349                 }
2350
2351                 buflen -= le32_to_cpu(auth_req->length);
2352                 buf += le32_to_cpu(auth_req->length);
2353         }
2354 }
2355
2356 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2357                                 struct ndis_80211_status_indication *indication,
2358                                 int len)
2359 {
2360         struct ndis_80211_pmkid_cand_list *cand_list;
2361         int list_len, expected_len, i;
2362
2363         if (len < offsetof(struct ndis_80211_status_indication, u) +
2364                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2365                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2366                             len);
2367                 return;
2368         }
2369
2370         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2371                         sizeof(struct ndis_80211_pmkid_candidate);
2372         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2373                         offsetof(struct ndis_80211_status_indication, u);
2374
2375         if (len < expected_len) {
2376                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2377                             len, expected_len);
2378                 return;
2379         }
2380
2381         cand_list = &indication->u.cand_list;
2382
2383         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2384                     le32_to_cpu(cand_list->version),
2385                     le32_to_cpu(cand_list->num_candidates));
2386
2387         if (le32_to_cpu(cand_list->version) != 1)
2388                 return;
2389
2390         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2391                 struct ndis_80211_pmkid_candidate *cand =
2392                                                 &cand_list->candidate_list[i];
2393
2394                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
2395                            i, le32_to_cpu(cand->flags), cand->bssid);
2396
2397 #if 0
2398                 struct iw_pmkid_cand pcand;
2399                 union iwreq_data wrqu;
2400
2401                 memset(&pcand, 0, sizeof(pcand));
2402                 if (le32_to_cpu(cand->flags) & 0x01)
2403                         pcand.flags |= IW_PMKID_CAND_PREAUTH;
2404                 pcand.index = i;
2405                 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
2406
2407                 memset(&wrqu, 0, sizeof(wrqu));
2408                 wrqu.data.length = sizeof(pcand);
2409                 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
2410                                                                 (u8 *)&pcand);
2411 #endif
2412         }
2413 }
2414
2415 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
2416                         struct rndis_indicate *msg, int buflen)
2417 {
2418         struct ndis_80211_status_indication *indication;
2419         int len, offset;
2420
2421         offset = offsetof(struct rndis_indicate, status) +
2422                         le32_to_cpu(msg->offset);
2423         len = le32_to_cpu(msg->length);
2424
2425         if (len < 8) {
2426                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
2427                             len);
2428                 return;
2429         }
2430
2431         if (offset + len > buflen) {
2432                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
2433                             offset + len, buflen);
2434                 return;
2435         }
2436
2437         indication = (void *)((u8 *)msg + offset);
2438
2439         switch (le32_to_cpu(indication->status_type)) {
2440         case NDIS_80211_STATUSTYPE_RADIOSTATE:
2441                 netdev_info(usbdev->net, "radio state indication: %i\n",
2442                             le32_to_cpu(indication->u.radio_status));
2443                 return;
2444
2445         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
2446                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
2447                             le32_to_cpu(indication->u.media_stream_mode));
2448                 return;
2449
2450         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
2451                 rndis_wlan_auth_indication(usbdev, indication, len);
2452                 return;
2453
2454         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
2455                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
2456                 return;
2457
2458         default:
2459                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
2460                             le32_to_cpu(indication->status_type));
2461         }
2462 }
2463
2464 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
2465 {
2466         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2467         struct rndis_indicate *msg = ind;
2468
2469         switch (msg->status) {
2470         case RNDIS_STATUS_MEDIA_CONNECT:
2471                 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
2472                         /* OID_802_11_ADD_KEY causes sometimes extra
2473                          * "media connect" indications which confuses driver
2474                          * and userspace to think that device is
2475                          * roaming/reassociating when it isn't.
2476                          */
2477                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
2478                         return;
2479                 }
2480
2481                 usbnet_pause_rx(usbdev);
2482
2483                 netdev_info(usbdev->net, "media connect\n");
2484
2485                 /* queue work to avoid recursive calls into rndis_command */
2486                 set_bit(WORK_LINK_UP, &priv->work_pending);
2487                 queue_work(priv->workqueue, &priv->work);
2488                 break;
2489
2490         case RNDIS_STATUS_MEDIA_DISCONNECT:
2491                 netdev_info(usbdev->net, "media disconnect\n");
2492
2493                 /* queue work to avoid recursive calls into rndis_command */
2494                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
2495                 queue_work(priv->workqueue, &priv->work);
2496                 break;
2497
2498         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
2499                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
2500                 break;
2501
2502         default:
2503                 netdev_info(usbdev->net, "indication: 0x%08x\n",
2504                             le32_to_cpu(msg->status));
2505                 break;
2506         }
2507 }
2508
2509 static int rndis_wlan_get_caps(struct usbnet *usbdev)
2510 {
2511         struct {
2512                 __le32  num_items;
2513                 __le32  items[8];
2514         } networks_supported;
2515         int len, retval, i, n;
2516         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2517
2518         /* determine supported modes */
2519         len = sizeof(networks_supported);
2520         retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
2521                                                 &networks_supported, &len);
2522         if (retval >= 0) {
2523                 n = le32_to_cpu(networks_supported.num_items);
2524                 if (n > 8)
2525                         n = 8;
2526                 for (i = 0; i < n; i++) {
2527                         switch (le32_to_cpu(networks_supported.items[i])) {
2528                         case NDIS_80211_TYPE_FREQ_HOP:
2529                         case NDIS_80211_TYPE_DIRECT_SEQ:
2530                                 priv->caps |= CAP_MODE_80211B;
2531                                 break;
2532                         case NDIS_80211_TYPE_OFDM_A:
2533                                 priv->caps |= CAP_MODE_80211A;
2534                                 break;
2535                         case NDIS_80211_TYPE_OFDM_G:
2536                                 priv->caps |= CAP_MODE_80211G;
2537                                 break;
2538                         }
2539                 }
2540         }
2541
2542         return retval;
2543 }
2544
2545 #define DEVICE_POLLER_JIFFIES (HZ)
2546 static void rndis_device_poller(struct work_struct *work)
2547 {
2548         struct rndis_wlan_private *priv =
2549                 container_of(work, struct rndis_wlan_private,
2550                                                         dev_poller_work.work);
2551         struct usbnet *usbdev = priv->usbdev;
2552         __le32 rssi, tmp;
2553         int len, ret, j;
2554         int update_jiffies = DEVICE_POLLER_JIFFIES;
2555         void *buf;
2556
2557         /* Only check/do workaround when connected. Calling is_associated()
2558          * also polls device with rndis_command() and catches for media link
2559          * indications.
2560          */
2561         if (!is_associated(usbdev))
2562                 goto end;
2563
2564         len = sizeof(rssi);
2565         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2566         if (ret == 0)
2567                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
2568
2569         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
2570                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
2571
2572         /* Workaround transfer stalls on poor quality links.
2573          * TODO: find right way to fix these stalls (as stalls do not happen
2574          * with ndiswrapper/windows driver). */
2575         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
2576                 /* Decrease stats worker interval to catch stalls.
2577                  * faster. Faster than 400-500ms causes packet loss,
2578                  * Slower doesn't catch stalls fast enough.
2579                  */
2580                 j = msecs_to_jiffies(priv->param_workaround_interval);
2581                 if (j > DEVICE_POLLER_JIFFIES)
2582                         j = DEVICE_POLLER_JIFFIES;
2583                 else if (j <= 0)
2584                         j = 1;
2585                 update_jiffies = j;
2586
2587                 /* Send scan OID. Use of both OIDs is required to get device
2588                  * working.
2589                  */
2590                 tmp = cpu_to_le32(1);
2591                 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
2592                                                                 sizeof(tmp));
2593
2594                 len = CONTROL_BUFFER_SIZE;
2595                 buf = kmalloc(len, GFP_KERNEL);
2596                 if (!buf)
2597                         goto end;
2598
2599                 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
2600                 kfree(buf);
2601         }
2602
2603 end:
2604         if (update_jiffies >= HZ)
2605                 update_jiffies = round_jiffies_relative(update_jiffies);
2606         else {
2607                 j = round_jiffies_relative(update_jiffies);
2608                 if (abs(j - update_jiffies) <= 10)
2609                         update_jiffies = j;
2610         }
2611
2612         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
2613                                                                 update_jiffies);
2614 }
2615
2616 /*
2617  * driver/device initialization
2618  */
2619 static void rndis_copy_module_params(struct usbnet *usbdev)
2620 {
2621         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2622
2623         priv->param_country[0] = modparam_country[0];
2624         priv->param_country[1] = modparam_country[1];
2625         priv->param_country[2] = 0;
2626         priv->param_frameburst   = modparam_frameburst;
2627         priv->param_afterburner  = modparam_afterburner;
2628         priv->param_power_save   = modparam_power_save;
2629         priv->param_power_output = modparam_power_output;
2630         priv->param_roamtrigger  = modparam_roamtrigger;
2631         priv->param_roamdelta    = modparam_roamdelta;
2632
2633         priv->param_country[0] = toupper(priv->param_country[0]);
2634         priv->param_country[1] = toupper(priv->param_country[1]);
2635         /* doesn't support EU as country code, use FI instead */
2636         if (!strcmp(priv->param_country, "EU"))
2637                 strcpy(priv->param_country, "FI");
2638
2639         if (priv->param_power_save < 0)
2640                 priv->param_power_save = 0;
2641         else if (priv->param_power_save > 2)
2642                 priv->param_power_save = 2;
2643
2644         if (priv->param_power_output < 0)
2645                 priv->param_power_output = 0;
2646         else if (priv->param_power_output > 3)
2647                 priv->param_power_output = 3;
2648
2649         if (priv->param_roamtrigger < -80)
2650                 priv->param_roamtrigger = -80;
2651         else if (priv->param_roamtrigger > -60)
2652                 priv->param_roamtrigger = -60;
2653
2654         if (priv->param_roamdelta < 0)
2655                 priv->param_roamdelta = 0;
2656         else if (priv->param_roamdelta > 2)
2657                 priv->param_roamdelta = 2;
2658
2659         if (modparam_workaround_interval < 0)
2660                 priv->param_workaround_interval = 500;
2661         else
2662                 priv->param_workaround_interval = modparam_workaround_interval;
2663 }
2664
2665 static int bcm4320a_early_init(struct usbnet *usbdev)
2666 {
2667         /* copy module parameters for bcm4320a so that iwconfig reports txpower
2668          * and workaround parameter is copied to private structure correctly.
2669          */
2670         rndis_copy_module_params(usbdev);
2671
2672         /* bcm4320a doesn't handle configuration parameters well. Try
2673          * set any and you get partially zeroed mac and broken device.
2674          */
2675
2676         return 0;
2677 }
2678
2679 static int bcm4320b_early_init(struct usbnet *usbdev)
2680 {
2681         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2682         char buf[8];
2683
2684         rndis_copy_module_params(usbdev);
2685
2686         /* Early initialization settings, setting these won't have effect
2687          * if called after generic_rndis_bind().
2688          */
2689
2690         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
2691         rndis_set_config_parameter_str(usbdev, "FrameBursting",
2692                                         priv->param_frameburst ? "1" : "0");
2693         rndis_set_config_parameter_str(usbdev, "Afterburner",
2694                                         priv->param_afterburner ? "1" : "0");
2695         sprintf(buf, "%d", priv->param_power_save);
2696         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
2697         sprintf(buf, "%d", priv->param_power_output);
2698         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
2699         sprintf(buf, "%d", priv->param_roamtrigger);
2700         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
2701         sprintf(buf, "%d", priv->param_roamdelta);
2702         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
2703
2704         return 0;
2705 }
2706
2707 /* same as rndis_netdev_ops but with local multicast handler */
2708 static const struct net_device_ops rndis_wlan_netdev_ops = {
2709         .ndo_open               = usbnet_open,
2710         .ndo_stop               = usbnet_stop,
2711         .ndo_start_xmit         = usbnet_start_xmit,
2712         .ndo_tx_timeout         = usbnet_tx_timeout,
2713         .ndo_set_mac_address    = eth_mac_addr,
2714         .ndo_validate_addr      = eth_validate_addr,
2715         .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
2716 };
2717
2718 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
2719 {
2720         struct wiphy *wiphy;
2721         struct rndis_wlan_private *priv;
2722         int retval, len;
2723         __le32 tmp;
2724
2725         /* allocate wiphy and rndis private data
2726          * NOTE: We only support a single virtual interface, so wiphy
2727          * and wireless_dev are somewhat synonymous for this device.
2728          */
2729         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
2730         if (!wiphy)
2731                 return -ENOMEM;
2732
2733         priv = wiphy_priv(wiphy);
2734         usbdev->net->ieee80211_ptr = &priv->wdev;
2735         priv->wdev.wiphy = wiphy;
2736         priv->wdev.iftype = NL80211_IFTYPE_STATION;
2737
2738         /* These have to be initialized before calling generic_rndis_bind().
2739          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
2740          */
2741         usbdev->driver_priv = priv;
2742         priv->usbdev = usbdev;
2743
2744         mutex_init(&priv->command_lock);
2745
2746         /* because rndis_command() sleeps we need to use workqueue */
2747         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
2748         INIT_WORK(&priv->work, rndis_wlan_worker);
2749         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
2750         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
2751
2752         /* try bind rndis_host */
2753         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
2754         if (retval < 0)
2755                 goto fail;
2756
2757         /* generic_rndis_bind set packet filter to multicast_all+
2758          * promisc mode which doesn't work well for our devices (device
2759          * picks up rssi to closest station instead of to access point).
2760          *
2761          * rndis_host wants to avoid all OID as much as possible
2762          * so do promisc/multicast handling in rndis_wlan.
2763          */
2764         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
2765
2766         tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
2767         retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
2768                                                                 sizeof(tmp));
2769
2770         len = sizeof(tmp);
2771         retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
2772                                                                 &len);
2773         priv->multicast_size = le32_to_cpu(tmp);
2774         if (retval < 0 || priv->multicast_size < 0)
2775                 priv->multicast_size = 0;
2776         if (priv->multicast_size > 0)
2777                 usbdev->net->flags |= IFF_MULTICAST;
2778         else
2779                 usbdev->net->flags &= ~IFF_MULTICAST;
2780
2781         /* fill-out wiphy structure and register w/ cfg80211 */
2782         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
2783         wiphy->privid = rndis_wiphy_privid;
2784         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
2785                                         | BIT(NL80211_IFTYPE_ADHOC);
2786         wiphy->max_scan_ssids = 1;
2787
2788         /* TODO: fill-out band/encr information based on priv->caps */
2789         rndis_wlan_get_caps(usbdev);
2790
2791         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
2792         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
2793         priv->band.channels = priv->channels;
2794         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
2795         priv->band.bitrates = priv->rates;
2796         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
2797         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
2798         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
2799
2800         memcpy(priv->cipher_suites, rndis_cipher_suites,
2801                                                 sizeof(rndis_cipher_suites));
2802         wiphy->cipher_suites = priv->cipher_suites;
2803         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
2804
2805         set_wiphy_dev(wiphy, &usbdev->udev->dev);
2806
2807         if (wiphy_register(wiphy)) {
2808                 retval = -ENODEV;
2809                 goto fail;
2810         }
2811
2812         set_default_iw_params(usbdev);
2813
2814         /* set default rts/frag */
2815         rndis_set_wiphy_params(wiphy,
2816                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
2817
2818         /* turn radio on */
2819         priv->radio_on = true;
2820         disassociate(usbdev, true);
2821         netif_carrier_off(usbdev->net);
2822
2823         return 0;
2824
2825 fail:
2826         cancel_delayed_work_sync(&priv->dev_poller_work);
2827         cancel_delayed_work_sync(&priv->scan_work);
2828         cancel_work_sync(&priv->work);
2829         flush_workqueue(priv->workqueue);
2830         destroy_workqueue(priv->workqueue);
2831
2832         wiphy_free(wiphy);
2833         return retval;
2834 }
2835
2836 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
2837 {
2838         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2839
2840         /* turn radio off */
2841         disassociate(usbdev, false);
2842
2843         cancel_delayed_work_sync(&priv->dev_poller_work);
2844         cancel_delayed_work_sync(&priv->scan_work);
2845         cancel_work_sync(&priv->work);
2846         flush_workqueue(priv->workqueue);
2847         destroy_workqueue(priv->workqueue);
2848
2849         if (priv && priv->wpa_ie_len)
2850                 kfree(priv->wpa_ie);
2851
2852         rndis_unbind(usbdev, intf);
2853
2854         wiphy_unregister(priv->wdev.wiphy);
2855         wiphy_free(priv->wdev.wiphy);
2856 }
2857
2858 static int rndis_wlan_reset(struct usbnet *usbdev)
2859 {
2860         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2861         int retval;
2862
2863         netdev_dbg(usbdev->net, "%s()\n", __func__);
2864
2865         retval = rndis_reset(usbdev);
2866         if (retval)
2867                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
2868
2869         /* rndis_reset cleared multicast list, so restore here.
2870            (set_multicast_list() also turns on current packet filter) */
2871         set_multicast_list(usbdev);
2872
2873         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
2874                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
2875
2876         return deauthenticate(usbdev);
2877 }
2878
2879 static int rndis_wlan_stop(struct usbnet *usbdev)
2880 {
2881         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2882         int retval;
2883         __le32 filter;
2884
2885         netdev_dbg(usbdev->net, "%s()\n", __func__);
2886
2887         retval = disassociate(usbdev, false);
2888
2889         priv->work_pending = 0;
2890         cancel_delayed_work_sync(&priv->dev_poller_work);
2891         cancel_delayed_work_sync(&priv->scan_work);
2892         cancel_work_sync(&priv->work);
2893         flush_workqueue(priv->workqueue);
2894
2895         if (priv->scan_request) {
2896                 cfg80211_scan_done(priv->scan_request, true);
2897                 priv->scan_request = NULL;
2898         }
2899
2900         /* Set current packet filter zero to block receiving data packets from
2901            device. */
2902         filter = 0;
2903         rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
2904                                                                 sizeof(filter));
2905
2906         return retval;
2907 }
2908
2909 static const struct driver_info bcm4320b_info = {
2910         .description =  "Wireless RNDIS device, BCM4320b based",
2911         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
2912                                 FLAG_AVOID_UNLINK_URBS,
2913         .bind =         rndis_wlan_bind,
2914         .unbind =       rndis_wlan_unbind,
2915         .status =       rndis_status,
2916         .rx_fixup =     rndis_rx_fixup,
2917         .tx_fixup =     rndis_tx_fixup,
2918         .reset =        rndis_wlan_reset,
2919         .stop =         rndis_wlan_stop,
2920         .early_init =   bcm4320b_early_init,
2921         .indication =   rndis_wlan_indication,
2922 };
2923
2924 static const struct driver_info bcm4320a_info = {
2925         .description =  "Wireless RNDIS device, BCM4320a based",
2926         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
2927                                 FLAG_AVOID_UNLINK_URBS,
2928         .bind =         rndis_wlan_bind,
2929         .unbind =       rndis_wlan_unbind,
2930         .status =       rndis_status,
2931         .rx_fixup =     rndis_rx_fixup,
2932         .tx_fixup =     rndis_tx_fixup,
2933         .reset =        rndis_wlan_reset,
2934         .stop =         rndis_wlan_stop,
2935         .early_init =   bcm4320a_early_init,
2936         .indication =   rndis_wlan_indication,
2937 };
2938
2939 static const struct driver_info rndis_wlan_info = {
2940         .description =  "Wireless RNDIS device",
2941         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
2942                                 FLAG_AVOID_UNLINK_URBS,
2943         .bind =         rndis_wlan_bind,
2944         .unbind =       rndis_wlan_unbind,
2945         .status =       rndis_status,
2946         .rx_fixup =     rndis_rx_fixup,
2947         .tx_fixup =     rndis_tx_fixup,
2948         .reset =        rndis_wlan_reset,
2949         .stop =         rndis_wlan_stop,
2950         .early_init =   bcm4320a_early_init,
2951         .indication =   rndis_wlan_indication,
2952 };
2953
2954 /*-------------------------------------------------------------------------*/
2955
2956 static const struct usb_device_id products [] = {
2957 #define RNDIS_MASTER_INTERFACE \
2958         .bInterfaceClass        = USB_CLASS_COMM, \
2959         .bInterfaceSubClass     = 2 /* ACM */, \
2960         .bInterfaceProtocol     = 0x0ff
2961
2962 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
2963  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
2964  */
2965 {
2966         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2967                           | USB_DEVICE_ID_MATCH_DEVICE,
2968         .idVendor               = 0x0411,
2969         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
2970         RNDIS_MASTER_INTERFACE,
2971         .driver_info            = (unsigned long) &bcm4320b_info,
2972 }, {
2973         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2974                           | USB_DEVICE_ID_MATCH_DEVICE,
2975         .idVendor               = 0x0baf,
2976         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
2977         RNDIS_MASTER_INTERFACE,
2978         .driver_info            = (unsigned long) &bcm4320b_info,
2979 }, {
2980         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2981                           | USB_DEVICE_ID_MATCH_DEVICE,
2982         .idVendor               = 0x050d,
2983         .idProduct              = 0x011b,       /* Belkin F5D7051 */
2984         RNDIS_MASTER_INTERFACE,
2985         .driver_info            = (unsigned long) &bcm4320b_info,
2986 }, {
2987         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2988                           | USB_DEVICE_ID_MATCH_DEVICE,
2989         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
2990         .idProduct              = 0x011b,       /* Belkin F5D7051 */
2991         RNDIS_MASTER_INTERFACE,
2992         .driver_info            = (unsigned long) &bcm4320b_info,
2993 }, {
2994         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2995                           | USB_DEVICE_ID_MATCH_DEVICE,
2996         .idVendor               = 0x13b1,
2997         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
2998         RNDIS_MASTER_INTERFACE,
2999         .driver_info            = (unsigned long) &bcm4320b_info,
3000 }, {
3001         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3002                           | USB_DEVICE_ID_MATCH_DEVICE,
3003         .idVendor               = 0x13b1,
3004         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3005         RNDIS_MASTER_INTERFACE,
3006         .driver_info            = (unsigned long) &bcm4320b_info,
3007 }, {
3008         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3009                           | USB_DEVICE_ID_MATCH_DEVICE,
3010         .idVendor               = 0x0b05,
3011         .idProduct              = 0x1717,       /* Asus WL169gE */
3012         RNDIS_MASTER_INTERFACE,
3013         .driver_info            = (unsigned long) &bcm4320b_info,
3014 }, {
3015         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3016                           | USB_DEVICE_ID_MATCH_DEVICE,
3017         .idVendor               = 0x0a5c,
3018         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3019         RNDIS_MASTER_INTERFACE,
3020         .driver_info            = (unsigned long) &bcm4320b_info,
3021 }, {
3022         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3023                           | USB_DEVICE_ID_MATCH_DEVICE,
3024         .idVendor               = 0x1690,
3025         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3026         RNDIS_MASTER_INTERFACE,
3027         .driver_info            = (unsigned long) &bcm4320b_info,
3028 },
3029 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3030  * parameters available, hardware probably contain older firmware version with
3031  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3032  */
3033 {
3034         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3035                           | USB_DEVICE_ID_MATCH_DEVICE,
3036         .idVendor               = 0x13b1,
3037         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3038         RNDIS_MASTER_INTERFACE,
3039         .driver_info            = (unsigned long) &bcm4320a_info,
3040 }, {
3041         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3042                           | USB_DEVICE_ID_MATCH_DEVICE,
3043         .idVendor               = 0x0baf,
3044         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3045         RNDIS_MASTER_INTERFACE,
3046         .driver_info            = (unsigned long) &bcm4320a_info,
3047 }, {
3048         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3049                           | USB_DEVICE_ID_MATCH_DEVICE,
3050         .idVendor               = 0x0411,
3051         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3052         RNDIS_MASTER_INTERFACE,
3053         .driver_info            = (unsigned long) &bcm4320a_info,
3054 },
3055 /* Generic Wireless RNDIS devices that we don't have exact
3056  * idVendor/idProduct/chip yet.
3057  */
3058 {
3059         /* RNDIS is MSFT's un-official variant of CDC ACM */
3060         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3061         .driver_info = (unsigned long) &rndis_wlan_info,
3062 }, {
3063         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3064         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3065         .driver_info = (unsigned long) &rndis_wlan_info,
3066 },
3067         { },            // END
3068 };
3069 MODULE_DEVICE_TABLE(usb, products);
3070
3071 static struct usb_driver rndis_wlan_driver = {
3072         .name =         "rndis_wlan",
3073         .id_table =     products,
3074         .probe =        usbnet_probe,
3075         .disconnect =   usbnet_disconnect,
3076         .suspend =      usbnet_suspend,
3077         .resume =       usbnet_resume,
3078 };
3079
3080 static int __init rndis_wlan_init(void)
3081 {
3082         return usb_register(&rndis_wlan_driver);
3083 }
3084 module_init(rndis_wlan_init);
3085
3086 static void __exit rndis_wlan_exit(void)
3087 {
3088         usb_deregister(&rndis_wlan_driver);
3089 }
3090 module_exit(rndis_wlan_exit);
3091
3092 MODULE_AUTHOR("Bjorge Dijkstra");
3093 MODULE_AUTHOR("Jussi Kivilinna");
3094 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3095 MODULE_LICENSE("GPL");
3096