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/ieee80211.h>
  40 #include <linux/if_arp.h>
  41 #include <linux/ctype.h>
  42 #include <linux/spinlock.h>
  43 #include <linux/slab.h>
  44 #include <net/cfg80211.h>
  45 #include <linux/usb/usbnet.h>
  46 #include <linux/usb/rndis_host.h>
  47
  48
  49 /* NOTE: All these are settings for Broadcom chipset */
  50 static char modparam_country[4] = "EU";
  51 module_param_string(country, modparam_country, 4, 0444);
  52 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  53
  54 static int modparam_frameburst = 1;
  55 module_param_named(frameburst, modparam_frameburst, int, 0444);
  56 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  57
  58 static int modparam_afterburner = 0;
  59 module_param_named(afterburner, modparam_afterburner, int, 0444);
  60 MODULE_PARM_DESC(afterburner,
  61         "enable afterburner aka '125 High Speed Mode' (default: off)");
  62
  63 static int modparam_power_save = 0;
  64 module_param_named(power_save, modparam_power_save, int, 0444);
  65 MODULE_PARM_DESC(power_save,
  66         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
  67
  68 static int modparam_power_output = 3;
  69 module_param_named(power_output, modparam_power_output, int, 0444);
  70 MODULE_PARM_DESC(power_output,
  71         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  72
  73 static int modparam_roamtrigger = -70;
  74 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  75 MODULE_PARM_DESC(roamtrigger,
  76         "set roaming dBm trigger: -80=optimize for distance, "
  77                                 "-60=bandwidth (default: -70)");
  78
  79 static int modparam_roamdelta = 1;
  80 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  81 MODULE_PARM_DESC(roamdelta,
  82         "set roaming tendency: 0=aggressive, 1=moderate, "
  83                                 "2=conservative (default: moderate)");
  84
  85 static int modparam_workaround_interval;
  86 module_param_named(workaround_interval, modparam_workaround_interval,
  87                                                         int, 0444);
  88 MODULE_PARM_DESC(workaround_interval,
  89         "set stall workaround interval in msecs (0=disabled) (default: 0)");
  90
  91
  92 /* various RNDIS OID defs */
  93 #define OID_GEN_LINK_SPEED                      cpu_to_le32(0x00010107)
  94 #define OID_GEN_RNDIS_CONFIG_PARAMETER          cpu_to_le32(0x0001021b)
  95
  96 #define OID_GEN_XMIT_OK                         cpu_to_le32(0x00020101)
  97 #define OID_GEN_RCV_OK                          cpu_to_le32(0x00020102)
  98 #define OID_GEN_XMIT_ERROR                      cpu_to_le32(0x00020103)
  99 #define OID_GEN_RCV_ERROR                       cpu_to_le32(0x00020104)
 100 #define OID_GEN_RCV_NO_BUFFER                   cpu_to_le32(0x00020105)
 101
 102 #define OID_802_3_CURRENT_ADDRESS               cpu_to_le32(0x01010102)
 103 #define OID_802_3_MULTICAST_LIST                cpu_to_le32(0x01010103)
 104 #define OID_802_3_MAXIMUM_LIST_SIZE             cpu_to_le32(0x01010104)
 105
 106 #define OID_802_11_BSSID                        cpu_to_le32(0x0d010101)
 107 #define OID_802_11_SSID                         cpu_to_le32(0x0d010102)
 108 #define OID_802_11_INFRASTRUCTURE_MODE          cpu_to_le32(0x0d010108)
 109 #define OID_802_11_ADD_WEP                      cpu_to_le32(0x0d010113)
 110 #define OID_802_11_REMOVE_WEP                   cpu_to_le32(0x0d010114)
 111 #define OID_802_11_DISASSOCIATE                 cpu_to_le32(0x0d010115)
 112 #define OID_802_11_AUTHENTICATION_MODE          cpu_to_le32(0x0d010118)
 113 #define OID_802_11_PRIVACY_FILTER               cpu_to_le32(0x0d010119)
 114 #define OID_802_11_BSSID_LIST_SCAN              cpu_to_le32(0x0d01011a)
 115 #define OID_802_11_ENCRYPTION_STATUS            cpu_to_le32(0x0d01011b)
 116 #define OID_802_11_ADD_KEY                      cpu_to_le32(0x0d01011d)
 117 #define OID_802_11_REMOVE_KEY                   cpu_to_le32(0x0d01011e)
 118 #define OID_802_11_ASSOCIATION_INFORMATION      cpu_to_le32(0x0d01011f)
 119 #define OID_802_11_CAPABILITY                   cpu_to_le32(0x0d010122)
 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_POWER_MODE                   cpu_to_le32(0x0d010216)
 131 #define OID_802_11_BSSID_LIST                   cpu_to_le32(0x0d010217)
 132
 133
 134 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
 135 #define WL_NOISE        -96     /* typical noise level in dBm */
 136 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
 137
 138
 139 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
 140  * based on wireless rndis) has default txpower of 13dBm.
 141  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
 142  *  100% : 20 mW ~ 13dBm
 143  *   75% : 15 mW ~ 12dBm
 144  *   50% : 10 mW ~ 10dBm
 145  *   25% :  5 mW ~  7dBm
 146  */
 147 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
 148 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
 149 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
 150 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
 151
 152
 153 /* codes for "status" field of completion messages */
 154 #define RNDIS_STATUS_ADAPTER_NOT_READY          cpu_to_le32(0xc0010011)
 155 #define RNDIS_STATUS_ADAPTER_NOT_OPEN           cpu_to_le32(0xc0010012)
 156
 157
 158 /* Known device types */
 159 #define RNDIS_UNKNOWN   0
 160 #define RNDIS_BCM4320A  1
 161 #define RNDIS_BCM4320B  2
 162
 163
 164 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 165  * slightly modified for datatype endianess, etc
 166  */
 167 #define NDIS_802_11_LENGTH_SSID 32
 168 #define NDIS_802_11_LENGTH_RATES 8
 169 #define NDIS_802_11_LENGTH_RATES_EX 16
 170
 171 enum ndis_80211_net_type {
 172         NDIS_80211_TYPE_FREQ_HOP,
 173         NDIS_80211_TYPE_DIRECT_SEQ,
 174         NDIS_80211_TYPE_OFDM_A,
 175         NDIS_80211_TYPE_OFDM_G
 176 };
 177
 178 enum ndis_80211_net_infra {
 179         NDIS_80211_INFRA_ADHOC,
 180         NDIS_80211_INFRA_INFRA,
 181         NDIS_80211_INFRA_AUTO_UNKNOWN
 182 };
 183
 184 enum ndis_80211_auth_mode {
 185         NDIS_80211_AUTH_OPEN,
 186         NDIS_80211_AUTH_SHARED,
 187         NDIS_80211_AUTH_AUTO_SWITCH,
 188         NDIS_80211_AUTH_WPA,
 189         NDIS_80211_AUTH_WPA_PSK,
 190         NDIS_80211_AUTH_WPA_NONE,
 191         NDIS_80211_AUTH_WPA2,
 192         NDIS_80211_AUTH_WPA2_PSK
 193 };
 194
 195 enum ndis_80211_encr_status {
 196         NDIS_80211_ENCR_WEP_ENABLED,
 197         NDIS_80211_ENCR_DISABLED,
 198         NDIS_80211_ENCR_WEP_KEY_ABSENT,
 199         NDIS_80211_ENCR_NOT_SUPPORTED,
 200         NDIS_80211_ENCR_TKIP_ENABLED,
 201         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 202         NDIS_80211_ENCR_CCMP_ENABLED,
 203         NDIS_80211_ENCR_CCMP_KEY_ABSENT
 204 };
 205
 206 enum ndis_80211_priv_filter {
 207         NDIS_80211_PRIV_ACCEPT_ALL,
 208         NDIS_80211_PRIV_8021X_WEP
 209 };
 210
 211 enum ndis_80211_status_type {
 212         NDIS_80211_STATUSTYPE_AUTHENTICATION,
 213         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 214         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 215         NDIS_80211_STATUSTYPE_RADIOSTATE,
 216 };
 217
 218 enum ndis_80211_media_stream_mode {
 219         NDIS_80211_MEDIA_STREAM_OFF,
 220         NDIS_80211_MEDIA_STREAM_ON
 221 };
 222
 223 enum ndis_80211_radio_status {
 224         NDIS_80211_RADIO_STATUS_ON,
 225         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 226         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 227 };
 228
 229 enum ndis_80211_addkey_bits {
 230         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 231         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 232         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 233         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 234 };
 235
 236 enum ndis_80211_addwep_bits {
 237         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 238         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 239 };
 240
 241 enum ndis_80211_power_mode {
 242         NDIS_80211_POWER_MODE_CAM,
 243         NDIS_80211_POWER_MODE_MAX_PSP,
 244         NDIS_80211_POWER_MODE_FAST_PSP,
 245 };
 246
 247 enum ndis_80211_pmkid_cand_list_flag_bits {
 248         NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
 249 };
 250
 251 struct ndis_80211_auth_request {
 252         __le32 length;
 253         u8 bssid[6];
 254         u8 padding[2];
 255         __le32 flags;
 256 } __packed;
 257
 258 struct ndis_80211_pmkid_candidate {
 259         u8 bssid[6];
 260         u8 padding[2];
 261         __le32 flags;
 262 } __packed;
 263
 264 struct ndis_80211_pmkid_cand_list {
 265         __le32 version;
 266         __le32 num_candidates;
 267         struct ndis_80211_pmkid_candidate candidate_list[0];
 268 } __packed;
 269
 270 struct ndis_80211_status_indication {
 271         __le32 status_type;
 272         union {
 273                 __le32                                  media_stream_mode;
 274                 __le32                                  radio_status;
 275                 struct ndis_80211_auth_request          auth_request[0];
 276                 struct ndis_80211_pmkid_cand_list       cand_list;
 277         } u;
 278 } __packed;
 279
 280 struct ndis_80211_ssid {
 281         __le32 length;
 282         u8 essid[NDIS_802_11_LENGTH_SSID];
 283 } __packed;
 284
 285 struct ndis_80211_conf_freq_hop {
 286         __le32 length;
 287         __le32 hop_pattern;
 288         __le32 hop_set;
 289         __le32 dwell_time;
 290 } __packed;
 291
 292 struct ndis_80211_conf {
 293         __le32 length;
 294         __le32 beacon_period;
 295         __le32 atim_window;
 296         __le32 ds_config;
 297         struct ndis_80211_conf_freq_hop fh_config;
 298 } __packed;
 299
 300 struct ndis_80211_bssid_ex {
 301         __le32 length;
 302         u8 mac[6];
 303         u8 padding[2];
 304         struct ndis_80211_ssid ssid;
 305         __le32 privacy;
 306         __le32 rssi;
 307         __le32 net_type;
 308         struct ndis_80211_conf config;
 309         __le32 net_infra;
 310         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 311         __le32 ie_length;
 312         u8 ies[0];
 313 } __packed;
 314
 315 struct ndis_80211_bssid_list_ex {
 316         __le32 num_items;
 317         struct ndis_80211_bssid_ex bssid[0];
 318 } __packed;
 319
 320 struct ndis_80211_fixed_ies {
 321         u8 timestamp[8];
 322         __le16 beacon_interval;
 323         __le16 capabilities;
 324 } __packed;
 325
 326 struct ndis_80211_wep_key {
 327         __le32 size;
 328         __le32 index;
 329         __le32 length;
 330         u8 material[32];
 331 } __packed;
 332
 333 struct ndis_80211_key {
 334         __le32 size;
 335         __le32 index;
 336         __le32 length;
 337         u8 bssid[6];
 338         u8 padding[6];
 339         u8 rsc[8];
 340         u8 material[32];
 341 } __packed;
 342
 343 struct ndis_80211_remove_key {
 344         __le32 size;
 345         __le32 index;
 346         u8 bssid[6];
 347         u8 padding[2];
 348 } __packed;
 349
 350 struct ndis_config_param {
 351         __le32 name_offs;
 352         __le32 name_length;
 353         __le32 type;
 354         __le32 value_offs;
 355         __le32 value_length;
 356 } __packed;
 357
 358 struct ndis_80211_assoc_info {
 359         __le32 length;
 360         __le16 req_ies;
 361         struct req_ie {
 362                 __le16 capa;
 363                 __le16 listen_interval;
 364                 u8 cur_ap_address[6];
 365         } req_ie;
 366         __le32 req_ie_length;
 367         __le32 offset_req_ies;
 368         __le16 resp_ies;
 369         struct resp_ie {
 370                 __le16 capa;
 371                 __le16 status_code;
 372                 __le16 assoc_id;
 373         } resp_ie;
 374         __le32 resp_ie_length;
 375         __le32 offset_resp_ies;
 376 } __packed;
 377
 378 struct ndis_80211_auth_encr_pair {
 379         __le32 auth_mode;
 380         __le32 encr_mode;
 381 } __packed;
 382
 383 struct ndis_80211_capability {
 384         __le32 length;
 385         __le32 version;
 386         __le32 num_pmkids;
 387         __le32 num_auth_encr_pair;
 388         struct ndis_80211_auth_encr_pair auth_encr_pair[0];
 389 } __packed;
 390
 391 struct ndis_80211_bssid_info {
 392         u8 bssid[6];
 393         u8 pmkid[16];
 394 } __packed;
 395
 396 struct ndis_80211_pmkid {
 397         __le32 length;
 398         __le32 bssid_info_count;
 399         struct ndis_80211_bssid_info bssid_info[0];
 400 } __packed;
 401
 402 /*
 403  *  private data
 404  */
 405 #define CAP_MODE_80211A         1
 406 #define CAP_MODE_80211B         2
 407 #define CAP_MODE_80211G         4
 408 #define CAP_MODE_MASK           7
 409
 410 #define WORK_LINK_UP            (1<<0)
 411 #define WORK_LINK_DOWN          (1<<1)
 412 #define WORK_SET_MULTICAST_LIST (1<<2)
 413
 414 #define RNDIS_WLAN_ALG_NONE     0
 415 #define RNDIS_WLAN_ALG_WEP      (1<<0)
 416 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
 417 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
 418
 419 #define RNDIS_WLAN_NUM_KEYS             4
 420 #define RNDIS_WLAN_KEY_MGMT_NONE        0
 421 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 422 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 423
 424 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 425
 426 static const struct ieee80211_channel rndis_channels[] = {
 427         { .center_freq = 2412 },
 428         { .center_freq = 2417 },
 429         { .center_freq = 2422 },
 430         { .center_freq = 2427 },
 431         { .center_freq = 2432 },
 432         { .center_freq = 2437 },
 433         { .center_freq = 2442 },
 434         { .center_freq = 2447 },
 435         { .center_freq = 2452 },
 436         { .center_freq = 2457 },
 437         { .center_freq = 2462 },
 438         { .center_freq = 2467 },
 439         { .center_freq = 2472 },
 440         { .center_freq = 2484 },
 441 };
 442
 443 static const struct ieee80211_rate rndis_rates[] = {
 444         { .bitrate = 10 },
 445         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 446         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 447         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 448         { .bitrate = 60 },
 449         { .bitrate = 90 },
 450         { .bitrate = 120 },
 451         { .bitrate = 180 },
 452         { .bitrate = 240 },
 453         { .bitrate = 360 },
 454         { .bitrate = 480 },
 455         { .bitrate = 540 }
 456 };
 457
 458 static const u32 rndis_cipher_suites[] = {
 459         WLAN_CIPHER_SUITE_WEP40,
 460         WLAN_CIPHER_SUITE_WEP104,
 461         WLAN_CIPHER_SUITE_TKIP,
 462         WLAN_CIPHER_SUITE_CCMP,
 463 };
 464
 465 struct rndis_wlan_encr_key {
 466         int len;
 467         u32 cipher;
 468         u8 material[32];
 469         u8 bssid[ETH_ALEN];
 470         bool pairwise;
 471         bool tx_key;
 472 };
 473
 474 /* RNDIS device private data */
 475 struct rndis_wlan_private {
 476         struct usbnet *usbdev;
 477
 478         struct wireless_dev wdev;
 479
 480         struct cfg80211_scan_request *scan_request;
 481
 482         struct workqueue_struct *workqueue;
 483         struct delayed_work dev_poller_work;
 484         struct delayed_work scan_work;
 485         struct work_struct work;
 486         struct mutex command_lock;
 487         unsigned long work_pending;
 488         int last_qual;
 489         s32 cqm_rssi_thold;
 490         u32 cqm_rssi_hyst;
 491         int last_cqm_event_rssi;
 492
 493         struct ieee80211_supported_band band;
 494         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 495         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 496         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 497
 498         int device_type;
 499         int caps;
 500         int multicast_size;
 501
 502         /* module parameters */
 503         char param_country[4];
 504         int  param_frameburst;
 505         int  param_afterburner;
 506         int  param_power_save;
 507         int  param_power_output;
 508         int  param_roamtrigger;
 509         int  param_roamdelta;
 510         u32  param_workaround_interval;
 511
 512         /* hardware state */
 513         bool radio_on;
 514         int power_mode;
 515         int infra_mode;
 516         bool connected;
 517         u8 bssid[ETH_ALEN];
 518         __le32 current_command_oid;
 519
 520         /* encryption stuff */
 521         int  encr_tx_key_index;
 522         struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
 523         int  wpa_version;
 524
 525         u8 command_buffer[COMMAND_BUFFER_SIZE];
 526 };
 527
 528 /*
 529  * cfg80211 ops
 530  */
 531 static int rndis_change_virtual_intf(struct wiphy *wiphy,
 532                                         struct net_device *dev,
 533                                         enum nl80211_iftype type, u32 *flags,
 534                                         struct vif_params *params);
 535
 536 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
 537                         struct cfg80211_scan_request *request);
 538
 539 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 540
 541 static int rndis_set_tx_power(struct wiphy *wiphy,
 542                               enum nl80211_tx_power_setting type,
 543                               int mbm);
 544 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
 545
 546 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 547                                 struct cfg80211_connect_params *sme);
 548
 549 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 550                                 u16 reason_code);
 551
 552 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 553                                         struct cfg80211_ibss_params *params);
 554
 555 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 556
 557 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
 558         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
 559
 560 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 561                          u8 key_index, bool pairwise, const u8 *mac_addr,
 562                          struct key_params *params);
 563
 564 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 565                          u8 key_index, bool pairwise, const u8 *mac_addr);
 566
 567 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 568                                  u8 key_index, bool unicast, bool multicast);
 569
 570 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 571                                         u8 *mac, struct station_info *sinfo);
 572
 573 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 574                                int idx, u8 *mac, struct station_info *sinfo);
 575
 576 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 577                                 struct cfg80211_pmksa *pmksa);
 578
 579 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 580                                 struct cfg80211_pmksa *pmksa);
 581
 582 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 583
 584 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 585                                 bool enabled, int timeout);
 586
 587 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 588                                         struct net_device *dev,
 589                                         s32 rssi_thold, u32 rssi_hyst);
 590
 591 static const struct cfg80211_ops rndis_config_ops = {
 592         .change_virtual_intf = rndis_change_virtual_intf,
 593         .scan = rndis_scan,
 594         .set_wiphy_params = rndis_set_wiphy_params,
 595         .set_tx_power = rndis_set_tx_power,
 596         .get_tx_power = rndis_get_tx_power,
 597         .connect = rndis_connect,
 598         .disconnect = rndis_disconnect,
 599         .join_ibss = rndis_join_ibss,
 600         .leave_ibss = rndis_leave_ibss,
 601         .set_channel = rndis_set_channel,
 602         .add_key = rndis_add_key,
 603         .del_key = rndis_del_key,
 604         .set_default_key = rndis_set_default_key,
 605         .get_station = rndis_get_station,
 606         .dump_station = rndis_dump_station,
 607         .set_pmksa = rndis_set_pmksa,
 608         .del_pmksa = rndis_del_pmksa,
 609         .flush_pmksa = rndis_flush_pmksa,
 610         .set_power_mgmt = rndis_set_power_mgmt,
 611         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 612 };
 613
 614 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 615
 616
 617 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 618 {
 619         return (struct rndis_wlan_private *)dev->driver_priv;
 620 }
 621
 622 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 623 {
 624         switch (priv->param_power_output) {
 625         default:
 626         case 3:
 627                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 628         case 2:
 629                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 630         case 1:
 631                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 632         case 0:
 633                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 634         }
 635 }
 636
 637 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
 638 {
 639         int cipher = priv->encr_keys[idx].cipher;
 640
 641         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 642                 cipher == WLAN_CIPHER_SUITE_TKIP);
 643 }
 644
 645 static int rndis_cipher_to_alg(u32 cipher)
 646 {
 647         switch (cipher) {
 648         default:
 649                 return RNDIS_WLAN_ALG_NONE;
 650         case WLAN_CIPHER_SUITE_WEP40:
 651         case WLAN_CIPHER_SUITE_WEP104:
 652                 return RNDIS_WLAN_ALG_WEP;
 653         case WLAN_CIPHER_SUITE_TKIP:
 654                 return RNDIS_WLAN_ALG_TKIP;
 655         case WLAN_CIPHER_SUITE_CCMP:
 656                 return RNDIS_WLAN_ALG_CCMP;
 657         }
 658 }
 659
 660 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 661 {
 662         switch (akm_suite) {
 663         default:
 664                 return RNDIS_WLAN_KEY_MGMT_NONE;
 665         case WLAN_AKM_SUITE_8021X:
 666                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 667         case WLAN_AKM_SUITE_PSK:
 668                 return RNDIS_WLAN_KEY_MGMT_PSK;
 669         }
 670 }
 671
 672 #ifdef DEBUG
 673 static const char *oid_to_string(__le32 oid)
 674 {
 675         switch (oid) {
 676 #define OID_STR(oid) case oid: return(#oid)
 677                 /* from rndis_host.h */
 678                 OID_STR(OID_802_3_PERMANENT_ADDRESS);
 679                 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
 680                 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
 681                 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
 682
 683                 /* from rndis_wlan.c */
 684                 OID_STR(OID_GEN_LINK_SPEED);
 685                 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
 686
 687                 OID_STR(OID_GEN_XMIT_OK);
 688                 OID_STR(OID_GEN_RCV_OK);
 689                 OID_STR(OID_GEN_XMIT_ERROR);
 690                 OID_STR(OID_GEN_RCV_ERROR);
 691                 OID_STR(OID_GEN_RCV_NO_BUFFER);
 692
 693                 OID_STR(OID_802_3_CURRENT_ADDRESS);
 694                 OID_STR(OID_802_3_MULTICAST_LIST);
 695                 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
 696
 697                 OID_STR(OID_802_11_BSSID);
 698                 OID_STR(OID_802_11_SSID);
 699                 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
 700                 OID_STR(OID_802_11_ADD_WEP);
 701                 OID_STR(OID_802_11_REMOVE_WEP);
 702                 OID_STR(OID_802_11_DISASSOCIATE);
 703                 OID_STR(OID_802_11_AUTHENTICATION_MODE);
 704                 OID_STR(OID_802_11_PRIVACY_FILTER);
 705                 OID_STR(OID_802_11_BSSID_LIST_SCAN);
 706                 OID_STR(OID_802_11_ENCRYPTION_STATUS);
 707                 OID_STR(OID_802_11_ADD_KEY);
 708                 OID_STR(OID_802_11_REMOVE_KEY);
 709                 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
 710                 OID_STR(OID_802_11_CAPABILITY);
 711                 OID_STR(OID_802_11_PMKID);
 712                 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
 713                 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
 714                 OID_STR(OID_802_11_TX_POWER_LEVEL);
 715                 OID_STR(OID_802_11_RSSI);
 716                 OID_STR(OID_802_11_RSSI_TRIGGER);
 717                 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
 718                 OID_STR(OID_802_11_RTS_THRESHOLD);
 719                 OID_STR(OID_802_11_SUPPORTED_RATES);
 720                 OID_STR(OID_802_11_CONFIGURATION);
 721                 OID_STR(OID_802_11_POWER_MODE);
 722                 OID_STR(OID_802_11_BSSID_LIST);
 723 #undef OID_STR
 724         }
 725
 726         return "?";
 727 }
 728 #else
 729 static const char *oid_to_string(__le32 oid)
 730 {
 731         return "?";
 732 }
 733 #endif
 734
 735 /* translate error code */
 736 static int rndis_error_status(__le32 rndis_status)
 737 {
 738         int ret = -EINVAL;
 739         switch (rndis_status) {
 740         case RNDIS_STATUS_SUCCESS:
 741                 ret = 0;
 742                 break;
 743         case RNDIS_STATUS_FAILURE:
 744         case RNDIS_STATUS_INVALID_DATA:
 745                 ret = -EINVAL;
 746                 break;
 747         case RNDIS_STATUS_NOT_SUPPORTED:
 748                 ret = -EOPNOTSUPP;
 749                 break;
 750         case RNDIS_STATUS_ADAPTER_NOT_READY:
 751         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 752                 ret = -EBUSY;
 753                 break;
 754         }
 755         return ret;
 756 }
 757
 758 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
 759 {
 760         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 761         union {
 762                 void                    *buf;
 763                 struct rndis_msg_hdr    *header;
 764                 struct rndis_query      *get;
 765                 struct rndis_query_c    *get_c;
 766         } u;
 767         int ret, buflen;
 768         int resplen, respoffs, copylen;
 769
 770         buflen = *len + sizeof(*u.get);
 771         if (buflen < CONTROL_BUFFER_SIZE)
 772                 buflen = CONTROL_BUFFER_SIZE;
 773
 774         if (buflen > COMMAND_BUFFER_SIZE) {
 775                 u.buf = kmalloc(buflen, GFP_KERNEL);
 776                 if (!u.buf)
 777                         return -ENOMEM;
 778         } else {
 779                 u.buf = priv->command_buffer;
 780         }
 781
 782         mutex_lock(&priv->command_lock);
 783
 784         memset(u.get, 0, sizeof *u.get);
 785         u.get->msg_type = RNDIS_MSG_QUERY;
 786         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 787         u.get->oid = oid;
 788
 789         priv->current_command_oid = oid;
 790         ret = rndis_command(dev, u.header, buflen);
 791         priv->current_command_oid = 0;
 792         if (ret < 0)
 793                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 794                            __func__, oid_to_string(oid), ret,
 795                            le32_to_cpu(u.get_c->status));
 796
 797         if (ret == 0) {
 798                 resplen = le32_to_cpu(u.get_c->len);
 799                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 800
 801                 if (respoffs > buflen) {
 802                         /* Device returned data offset outside buffer, error. */
 803                         netdev_dbg(dev->net, "%s(%s): received invalid "
 804                                 "data offset: %d > %d\n", __func__,
 805                                 oid_to_string(oid), respoffs, buflen);
 806
 807                         ret = -EINVAL;
 808                         goto exit_unlock;
 809                 }
 810
 811                 if ((resplen + respoffs) > buflen) {
 812                         /* Device would have returned more data if buffer would
 813                          * have been big enough. Copy just the bits that we got.
 814                          */
 815                         copylen = buflen - respoffs;
 816                 } else {
 817                         copylen = resplen;
 818                 }
 819
 820                 if (copylen > *len)
 821                         copylen = *len;
 822
 823                 memcpy(data, u.buf + respoffs, copylen);
 824
 825                 *len = resplen;
 826
 827                 ret = rndis_error_status(u.get_c->status);
 828                 if (ret < 0)
 829                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 830                                    __func__, oid_to_string(oid),
 831                                    le32_to_cpu(u.get_c->status), ret);
 832         }
 833
 834 exit_unlock:
 835         mutex_unlock(&priv->command_lock);
 836
 837         if (u.buf != priv->command_buffer)
 838                 kfree(u.buf);
 839         return ret;
 840 }
 841
 842 static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
 843                          int len)
 844 {
 845         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 846         union {
 847                 void                    *buf;
 848                 struct rndis_msg_hdr    *header;
 849                 struct rndis_set        *set;
 850                 struct rndis_set_c      *set_c;
 851         } u;
 852         int ret, buflen;
 853
 854         buflen = len + sizeof(*u.set);
 855         if (buflen < CONTROL_BUFFER_SIZE)
 856                 buflen = CONTROL_BUFFER_SIZE;
 857
 858         if (buflen > COMMAND_BUFFER_SIZE) {
 859                 u.buf = kmalloc(buflen, GFP_KERNEL);
 860                 if (!u.buf)
 861                         return -ENOMEM;
 862         } else {
 863                 u.buf = priv->command_buffer;
 864         }
 865
 866         mutex_lock(&priv->command_lock);
 867
 868         memset(u.set, 0, sizeof *u.set);
 869         u.set->msg_type = RNDIS_MSG_SET;
 870         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 871         u.set->oid = oid;
 872         u.set->len = cpu_to_le32(len);
 873         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 874         u.set->handle = cpu_to_le32(0);
 875         memcpy(u.buf + sizeof(*u.set), data, len);
 876
 877         priv->current_command_oid = oid;
 878         ret = rndis_command(dev, u.header, buflen);
 879         priv->current_command_oid = 0;
 880         if (ret < 0)
 881                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 882                            __func__, oid_to_string(oid), ret,
 883                            le32_to_cpu(u.set_c->status));
 884
 885         if (ret == 0) {
 886                 ret = rndis_error_status(u.set_c->status);
 887
 888                 if (ret < 0)
 889                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 890                                    __func__, oid_to_string(oid),
 891                                    le32_to_cpu(u.set_c->status), ret);
 892         }
 893
 894         mutex_unlock(&priv->command_lock);
 895
 896         if (u.buf != priv->command_buffer)
 897                 kfree(u.buf);
 898         return ret;
 899 }
 900
 901 static int rndis_reset(struct usbnet *usbdev)
 902 {
 903         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 904         struct rndis_reset *reset;
 905         int ret;
 906
 907         mutex_lock(&priv->command_lock);
 908
 909         reset = (void *)priv->command_buffer;
 910         memset(reset, 0, sizeof(*reset));
 911         reset->msg_type = RNDIS_MSG_RESET;
 912         reset->msg_len = cpu_to_le32(sizeof(*reset));
 913         priv->current_command_oid = 0;
 914         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 915
 916         mutex_unlock(&priv->command_lock);
 917
 918         if (ret < 0)
 919                 return ret;
 920         return 0;
 921 }
 922
 923 /*
 924  * Specs say that we can only set config parameters only soon after device
 925  * initialization.
 926  *   value_type: 0 = u32, 2 = unicode string
 927  */
 928 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 929                                                 int value_type, void *value)
 930 {
 931         struct ndis_config_param *infobuf;
 932         int value_len, info_len, param_len, ret, i;
 933         __le16 *unibuf;
 934         __le32 *dst_value;
 935
 936         if (value_type == 0)
 937                 value_len = sizeof(__le32);
 938         else if (value_type == 2)
 939                 value_len = strlen(value) * sizeof(__le16);
 940         else
 941                 return -EINVAL;
 942
 943         param_len = strlen(param) * sizeof(__le16);
 944         info_len = sizeof(*infobuf) + param_len + value_len;
 945
 946 #ifdef DEBUG
 947         info_len += 12;
 948 #endif
 949         infobuf = kmalloc(info_len, GFP_KERNEL);
 950         if (!infobuf)
 951                 return -ENOMEM;
 952
 953 #ifdef DEBUG
 954         info_len -= 12;
 955         /* extra 12 bytes are for padding (debug output) */
 956         memset(infobuf, 0xCC, info_len + 12);
 957 #endif
 958
 959         if (value_type == 2)
 960                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 961                            param, (u8 *)value);
 962         else
 963                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 964                            param, *(u32 *)value);
 965
 966         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 967         infobuf->name_length = cpu_to_le32(param_len);
 968         infobuf->type = cpu_to_le32(value_type);
 969         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 970         infobuf->value_length = cpu_to_le32(value_len);
 971
 972         /* simple string to unicode string conversion */
 973         unibuf = (void *)infobuf + sizeof(*infobuf);
 974         for (i = 0; i < param_len / sizeof(__le16); i++)
 975                 unibuf[i] = cpu_to_le16(param[i]);
 976
 977         if (value_type == 2) {
 978                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 979                 for (i = 0; i < value_len / sizeof(__le16); i++)
 980                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 981         } else {
 982                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 983                 *dst_value = cpu_to_le32(*(u32 *)value);
 984         }
 985
 986 #ifdef DEBUG
 987         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 988         for (i = 0; i < info_len; i += 12) {
 989                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 990                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 991                            cpu_to_be32(tmp[0]),
 992                            cpu_to_be32(tmp[1]),
 993                            cpu_to_be32(tmp[2]));
 994         }
 995 #endif
 996
 997         ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
 998                                                         infobuf, info_len);
 999         if (ret != 0)
1000                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
1001                            ret);
1002
1003         kfree(infobuf);
1004         return ret;
1005 }
1006
1007 static int rndis_set_config_parameter_str(struct usbnet *dev,
1008                                                 char *param, char *value)
1009 {
1010         return rndis_set_config_parameter(dev, param, 2, value);
1011 }
1012
1013 /*
1014  * data conversion functions
1015  */
1016 static int level_to_qual(int level)
1017 {
1018         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
1019         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
1020 }
1021
1022 /*
1023  * common functions
1024  */
1025 static int set_infra_mode(struct usbnet *usbdev, int mode);
1026 static void restore_keys(struct usbnet *usbdev);
1027 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1028                                         bool *matched);
1029
1030 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1031 {
1032         __le32 tmp;
1033
1034         /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1035         tmp = cpu_to_le32(1);
1036         return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1037                                                         sizeof(tmp));
1038 }
1039
1040 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1041 {
1042         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1043         int ret;
1044
1045         ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1046         if (ret < 0) {
1047                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1048                 return ret;
1049         }
1050         if (ret == 0) {
1051                 priv->radio_on = true;
1052                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1053         }
1054
1055         return ret;
1056 }
1057
1058 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1059 {
1060         int ret;
1061
1062         ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1063         if (ret < 0) {
1064                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1065                             bssid, ret);
1066                 return ret;
1067         }
1068
1069         return ret;
1070 }
1071
1072 static int clear_bssid(struct usbnet *usbdev)
1073 {
1074         static const u8 broadcast_mac[ETH_ALEN] = {
1075                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1076         };
1077
1078         return set_bssid(usbdev, broadcast_mac);
1079 }
1080
1081 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1082 {
1083         int ret, len;
1084
1085         len = ETH_ALEN;
1086         ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1087
1088         if (ret != 0)
1089                 memset(bssid, 0, ETH_ALEN);
1090
1091         return ret;
1092 }
1093
1094 static int get_association_info(struct usbnet *usbdev,
1095                         struct ndis_80211_assoc_info *info, int len)
1096 {
1097         return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1098                                 info, &len);
1099 }
1100
1101 static bool is_associated(struct usbnet *usbdev)
1102 {
1103         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1104         u8 bssid[ETH_ALEN];
1105         int ret;
1106
1107         if (!priv->radio_on)
1108                 return false;
1109
1110         ret = get_bssid(usbdev, bssid);
1111
1112         return (ret == 0 && !is_zero_ether_addr(bssid));
1113 }
1114
1115 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1116 {
1117         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1118         struct ndis_80211_ssid ssid;
1119         int i, ret = 0;
1120
1121         if (priv->radio_on) {
1122                 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1123                 if (ret == 0) {
1124                         priv->radio_on = false;
1125                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1126                                    __func__);
1127
1128                         if (reset_ssid)
1129                                 msleep(100);
1130                 }
1131         }
1132
1133         /* disassociate causes radio to be turned off; if reset_ssid
1134          * is given, set random ssid to enable radio */
1135         if (reset_ssid) {
1136                 /* Set device to infrastructure mode so we don't get ad-hoc
1137                  * 'media connect' indications with the random ssid.
1138                  */
1139                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1140
1141                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1142                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1143                 ssid.essid[0] = 0x1;
1144                 ssid.essid[1] = 0xff;
1145                 for (i = 2; i < sizeof(ssid.essid); i++)
1146                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1147                 ret = set_essid(usbdev, &ssid);
1148         }
1149         return ret;
1150 }
1151
1152 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1153                                 enum nl80211_auth_type auth_type, int keymgmt)
1154 {
1155         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1156         __le32 tmp;
1157         int auth_mode, ret;
1158
1159         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1160                    __func__, wpa_version, auth_type, keymgmt);
1161
1162         if (wpa_version & NL80211_WPA_VERSION_2) {
1163                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1164                         auth_mode = NDIS_80211_AUTH_WPA2;
1165                 else
1166                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1167         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1168                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1169                         auth_mode = NDIS_80211_AUTH_WPA;
1170                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1171                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1172                 else
1173                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1174         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1175                 auth_mode = NDIS_80211_AUTH_SHARED;
1176         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1177                 auth_mode = NDIS_80211_AUTH_OPEN;
1178         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1179                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1180         else
1181                 return -ENOTSUPP;
1182
1183         tmp = cpu_to_le32(auth_mode);
1184         ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1185                                                                 sizeof(tmp));
1186         if (ret != 0) {
1187                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1188                             ret);
1189                 return ret;
1190         }
1191
1192         priv->wpa_version = wpa_version;
1193
1194         return 0;
1195 }
1196
1197 static int set_priv_filter(struct usbnet *usbdev)
1198 {
1199         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1200         __le32 tmp;
1201
1202         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1203                    __func__, priv->wpa_version);
1204
1205         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1206             priv->wpa_version & NL80211_WPA_VERSION_1)
1207                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1208         else
1209                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1210
1211         return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1212                                                                 sizeof(tmp));
1213 }
1214
1215 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1216 {
1217         __le32 tmp;
1218         int encr_mode, ret;
1219
1220         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1221                    __func__, pairwise, groupwise);
1222
1223         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1224                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1225         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1226                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1227         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1228                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1229         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1230                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1231         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1232                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1233         else
1234                 encr_mode = NDIS_80211_ENCR_DISABLED;
1235
1236         tmp = cpu_to_le32(encr_mode);
1237         ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1238                                                                 sizeof(tmp));
1239         if (ret != 0) {
1240                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1241                             ret);
1242                 return ret;
1243         }
1244
1245         return 0;
1246 }
1247
1248 static int set_infra_mode(struct usbnet *usbdev, int mode)
1249 {
1250         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1251         __le32 tmp;
1252         int ret;
1253
1254         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1255                    __func__, priv->infra_mode);
1256
1257         tmp = cpu_to_le32(mode);
1258         ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1259                                                                 sizeof(tmp));
1260         if (ret != 0) {
1261                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1262                             ret);
1263                 return ret;
1264         }
1265
1266         /* NDIS drivers clear keys when infrastructure mode is
1267          * changed. But Linux tools assume otherwise. So set the
1268          * keys */
1269         restore_keys(usbdev);
1270
1271         priv->infra_mode = mode;
1272         return 0;
1273 }
1274
1275 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1276 {
1277         __le32 tmp;
1278
1279         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1280
1281         if (rts_threshold < 0 || rts_threshold > 2347)
1282                 rts_threshold = 2347;
1283
1284         tmp = cpu_to_le32(rts_threshold);
1285         return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1286                                                                 sizeof(tmp));
1287 }
1288
1289 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1290 {
1291         __le32 tmp;
1292
1293         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1294
1295         if (frag_threshold < 256 || frag_threshold > 2346)
1296                 frag_threshold = 2346;
1297
1298         tmp = cpu_to_le32(frag_threshold);
1299         return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1300                                                                 sizeof(tmp));
1301 }
1302
1303 static void set_default_iw_params(struct usbnet *usbdev)
1304 {
1305         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1306         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1307                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1308         set_priv_filter(usbdev);
1309         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1310 }
1311
1312 static int deauthenticate(struct usbnet *usbdev)
1313 {
1314         int ret;
1315
1316         ret = disassociate(usbdev, true);
1317         set_default_iw_params(usbdev);
1318         return ret;
1319 }
1320
1321 static int set_channel(struct usbnet *usbdev, int channel)
1322 {
1323         struct ndis_80211_conf config;
1324         unsigned int dsconfig;
1325         int len, ret;
1326
1327         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1328
1329         /* this OID is valid only when not associated */
1330         if (is_associated(usbdev))
1331                 return 0;
1332
1333         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1334
1335         len = sizeof(config);
1336         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1337         if (ret < 0) {
1338                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1339                            __func__);
1340                 return ret;
1341         }
1342
1343         config.ds_config = cpu_to_le32(dsconfig);
1344         ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1345                                                                 sizeof(config));
1346
1347         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1348
1349         return ret;
1350 }
1351
1352 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1353                                                      u16 *beacon_interval)
1354 {
1355         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1356         struct ieee80211_channel *channel;
1357         struct ndis_80211_conf config;
1358         int len, ret;
1359
1360         /* Get channel and beacon interval */
1361         len = sizeof(config);
1362         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1363         netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
1364                                 __func__, ret);
1365         if (ret < 0)
1366                 return NULL;
1367
1368         channel = ieee80211_get_channel(priv->wdev.wiphy,
1369                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1370         if (!channel)
1371                 return NULL;
1372
1373         if (beacon_interval)
1374                 *beacon_interval = le16_to_cpu(config.beacon_period);
1375         return channel;
1376 }
1377
1378 /* index must be 0 - N, as per NDIS  */
1379 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1380                                                                 int index)
1381 {
1382         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1383         struct ndis_80211_wep_key ndis_key;
1384         u32 cipher;
1385         int ret;
1386
1387         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1388                    __func__, index, key_len);
1389
1390         if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1391                 return -EINVAL;
1392
1393         if (key_len == 5)
1394                 cipher = WLAN_CIPHER_SUITE_WEP40;
1395         else
1396                 cipher = WLAN_CIPHER_SUITE_WEP104;
1397
1398         memset(&ndis_key, 0, sizeof(ndis_key));
1399
1400         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1401         ndis_key.length = cpu_to_le32(key_len);
1402         ndis_key.index = cpu_to_le32(index);
1403         memcpy(&ndis_key.material, key, key_len);
1404
1405         if (index == priv->encr_tx_key_index) {
1406                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1407                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1408                                                         RNDIS_WLAN_ALG_NONE);
1409                 if (ret)
1410                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1411                                     ret);
1412         }
1413
1414         ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1415                                                         sizeof(ndis_key));
1416         if (ret != 0) {
1417                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1418                             index + 1, ret);
1419                 return ret;
1420         }
1421
1422         priv->encr_keys[index].len = key_len;
1423         priv->encr_keys[index].cipher = cipher;
1424         memcpy(&priv->encr_keys[index].material, key, key_len);
1425         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1426
1427         return 0;
1428 }
1429
1430 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1431                         int index, const u8 *addr, const u8 *rx_seq,
1432                         int seq_len, u32 cipher, __le32 flags)
1433 {
1434         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1435         struct ndis_80211_key ndis_key;
1436         bool is_addr_ok;
1437         int ret;
1438
1439         if (index < 0 || index >= 4) {
1440                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1441                            __func__, index);
1442                 return -EINVAL;
1443         }
1444         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1445                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1446                            __func__, key_len);
1447                 return -EINVAL;
1448         }
1449         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1450                 if (!rx_seq || seq_len <= 0) {
1451                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1452                                    __func__);
1453                         return -EINVAL;
1454                 }
1455                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1456                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1457                         return -EINVAL;
1458                 }
1459         }
1460
1461         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1462                                         !is_broadcast_ether_addr(addr);
1463         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1464                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1465                            __func__, addr);
1466                 return -EINVAL;
1467         }
1468
1469         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1470                    __func__, index,
1471                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1472                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1473                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1474
1475         memset(&ndis_key, 0, sizeof(ndis_key));
1476
1477         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1478                                 sizeof(ndis_key.material) + key_len);
1479         ndis_key.length = cpu_to_le32(key_len);
1480         ndis_key.index = cpu_to_le32(index) | flags;
1481
1482         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1483                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1484                  * different order than NDIS spec, so swap the order here. */
1485                 memcpy(ndis_key.material, key, 16);
1486                 memcpy(ndis_key.material + 16, key + 24, 8);
1487                 memcpy(ndis_key.material + 24, key + 16, 8);
1488         } else
1489                 memcpy(ndis_key.material, key, key_len);
1490
1491         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1492                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1493
1494         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1495                 /* pairwise key */
1496                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1497         } else {
1498                 /* group key */
1499                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1500                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1501                 else
1502                         get_bssid(usbdev, ndis_key.bssid);
1503         }
1504
1505         ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1506                                         le32_to_cpu(ndis_key.size));
1507         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1508                    __func__, ret);
1509         if (ret != 0)
1510                 return ret;
1511
1512         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1513         priv->encr_keys[index].len = key_len;
1514         priv->encr_keys[index].cipher = cipher;
1515         memcpy(&priv->encr_keys[index].material, key, key_len);
1516         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1517                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1518         else
1519                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1520
1521         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1522                 priv->encr_tx_key_index = index;
1523
1524         return 0;
1525 }
1526
1527 static int restore_key(struct usbnet *usbdev, int key_idx)
1528 {
1529         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1530         struct rndis_wlan_encr_key key;
1531
1532         if (is_wpa_key(priv, key_idx))
1533                 return 0;
1534
1535         key = priv->encr_keys[key_idx];
1536
1537         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1538
1539         if (key.len == 0)
1540                 return 0;
1541
1542         return add_wep_key(usbdev, key.material, key.len, key_idx);
1543 }
1544
1545 static void restore_keys(struct usbnet *usbdev)
1546 {
1547         int i;
1548
1549         for (i = 0; i < 4; i++)
1550                 restore_key(usbdev, i);
1551 }
1552
1553 static void clear_key(struct rndis_wlan_private *priv, int idx)
1554 {
1555         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1556 }
1557
1558 /* remove_key is for both wep and wpa */
1559 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1560 {
1561         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1562         struct ndis_80211_remove_key remove_key;
1563         __le32 keyindex;
1564         bool is_wpa;
1565         int ret;
1566
1567         if (index >= RNDIS_WLAN_NUM_KEYS)
1568                 return -ENOENT;
1569
1570         if (priv->encr_keys[index].len == 0)
1571                 return 0;
1572
1573         is_wpa = is_wpa_key(priv, index);
1574
1575         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1576                    __func__, index, is_wpa ? "wpa" : "wep",
1577                    priv->encr_keys[index].len);
1578
1579         clear_key(priv, index);
1580
1581         if (is_wpa) {
1582                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1583                 remove_key.index = cpu_to_le32(index);
1584                 if (bssid) {
1585                         /* pairwise key */
1586                         if (!is_broadcast_ether_addr(bssid))
1587                                 remove_key.index |=
1588                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1589                         memcpy(remove_key.bssid, bssid,
1590                                         sizeof(remove_key.bssid));
1591                 } else
1592                         memset(remove_key.bssid, 0xff,
1593                                                 sizeof(remove_key.bssid));
1594
1595                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1596                                                         sizeof(remove_key));
1597                 if (ret != 0)
1598                         return ret;
1599         } else {
1600                 keyindex = cpu_to_le32(index);
1601                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1602                                                         sizeof(keyindex));
1603                 if (ret != 0) {
1604                         netdev_warn(usbdev->net,
1605                                     "removing encryption key %d failed (%08X)\n",
1606                                     index, ret);
1607                         return ret;
1608                 }
1609         }
1610
1611         /* if it is transmit key, disable encryption */
1612         if (index == priv->encr_tx_key_index)
1613                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1614
1615         return 0;
1616 }
1617
1618 static void set_multicast_list(struct usbnet *usbdev)
1619 {
1620         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1621         struct netdev_hw_addr *ha;
1622         __le32 filter, basefilter;
1623         int ret;
1624         char *mc_addrs = NULL;
1625         int mc_count;
1626
1627         basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1628                               RNDIS_PACKET_TYPE_BROADCAST;
1629
1630         if (usbdev->net->flags & IFF_PROMISC) {
1631                 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1632                         RNDIS_PACKET_TYPE_ALL_LOCAL;
1633         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1634                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1635         }
1636
1637         if (filter != basefilter)
1638                 goto set_filter;
1639
1640         /*
1641          * mc_list should be accessed holding the lock, so copy addresses to
1642          * local buffer first.
1643          */
1644         netif_addr_lock_bh(usbdev->net);
1645         mc_count = netdev_mc_count(usbdev->net);
1646         if (mc_count > priv->multicast_size) {
1647                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1648         } else if (mc_count) {
1649                 int i = 0;
1650
1651                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1652                 if (!mc_addrs) {
1653                         netdev_warn(usbdev->net,
1654                                     "couldn't alloc %d bytes of memory\n",
1655                                     mc_count * ETH_ALEN);
1656                         netif_addr_unlock_bh(usbdev->net);
1657                         return;
1658                 }
1659
1660                 netdev_for_each_mc_addr(ha, usbdev->net)
1661                         memcpy(mc_addrs + i++ * ETH_ALEN,
1662                                ha->addr, ETH_ALEN);
1663         }
1664         netif_addr_unlock_bh(usbdev->net);
1665
1666         if (filter != basefilter)
1667                 goto set_filter;
1668
1669         if (mc_count) {
1670                 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1671                                     mc_count * ETH_ALEN);
1672                 kfree(mc_addrs);
1673                 if (ret == 0)
1674                         filter |= RNDIS_PACKET_TYPE_MULTICAST;
1675                 else
1676                         filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1677
1678                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1679                            mc_count, priv->multicast_size, ret);
1680         }
1681
1682 set_filter:
1683         ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1684                                                         sizeof(filter));
1685         if (ret < 0) {
1686                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1687                             le32_to_cpu(filter));
1688         }
1689
1690         netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1691                    le32_to_cpu(filter), ret);
1692 }
1693
1694 #ifdef DEBUG
1695 static void debug_print_pmkids(struct usbnet *usbdev,
1696                                 struct ndis_80211_pmkid *pmkids,
1697                                 const char *func_str)
1698 {
1699         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1700         int i, len, count, max_pmkids, entry_len;
1701
1702         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1703         len = le32_to_cpu(pmkids->length);
1704         count = le32_to_cpu(pmkids->bssid_info_count);
1705
1706         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1707
1708         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1709                                 "%d)\n", func_str, count, len, entry_len);
1710
1711         if (count > max_pmkids)
1712                 count = max_pmkids;
1713
1714         for (i = 0; i < count; i++) {
1715                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1716
1717                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1718                                 "pmkid: %08X:%08X:%08X:%08X\n",
1719                                 func_str, pmkids->bssid_info[i].bssid,
1720                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1721                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1722         }
1723 }
1724 #else
1725 static void debug_print_pmkids(struct usbnet *usbdev,
1726                                 struct ndis_80211_pmkid *pmkids,
1727                                 const char *func_str)
1728 {
1729         return;
1730 }
1731 #endif
1732
1733 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1734 {
1735         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1736         struct ndis_80211_pmkid *pmkids;
1737         int len, ret, max_pmkids;
1738
1739         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1740         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1741
1742         pmkids = kzalloc(len, GFP_KERNEL);
1743         if (!pmkids)
1744                 return ERR_PTR(-ENOMEM);
1745
1746         pmkids->length = cpu_to_le32(len);
1747         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1748
1749         ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1750         if (ret < 0) {
1751                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1752                                 " -> %d\n", __func__, len, max_pmkids, ret);
1753
1754                 kfree(pmkids);
1755                 return ERR_PTR(ret);
1756         }
1757
1758         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1759                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1760
1761         debug_print_pmkids(usbdev, pmkids, __func__);
1762
1763         return pmkids;
1764 }
1765
1766 static int set_device_pmkids(struct usbnet *usbdev,
1767                                 struct ndis_80211_pmkid *pmkids)
1768 {
1769         int ret, len, num_pmkids;
1770
1771         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1772         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1773         pmkids->length = cpu_to_le32(len);
1774
1775         debug_print_pmkids(usbdev, pmkids, __func__);
1776
1777         ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1778                                                 le32_to_cpu(pmkids->length));
1779         if (ret < 0) {
1780                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1781                                 "\n", __func__, len, num_pmkids, ret);
1782         }
1783
1784         kfree(pmkids);
1785         return ret;
1786 }
1787
1788 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1789                                                 struct ndis_80211_pmkid *pmkids,
1790                                                 struct cfg80211_pmksa *pmksa,
1791                                                 int max_pmkids)
1792 {
1793         int i, count, newlen, err;
1794
1795         count = le32_to_cpu(pmkids->bssid_info_count);
1796
1797         if (count > max_pmkids)
1798                 count = max_pmkids;
1799
1800         for (i = 0; i < count; i++)
1801                 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1802                                                         pmksa->bssid))
1803                         break;
1804
1805         /* pmkid not found */
1806         if (i == count) {
1807                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1808                                         __func__, pmksa->bssid);
1809                 err = -ENOENT;
1810                 goto error;
1811         }
1812
1813         for (; i + 1 < count; i++)
1814                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1815
1816         count--;
1817         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1818
1819         pmkids->length = cpu_to_le32(newlen);
1820         pmkids->bssid_info_count = cpu_to_le32(count);
1821
1822         return pmkids;
1823 error:
1824         kfree(pmkids);
1825         return ERR_PTR(err);
1826 }
1827
1828 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1829                                                 struct ndis_80211_pmkid *pmkids,
1830                                                 struct cfg80211_pmksa *pmksa,
1831                                                 int max_pmkids)
1832 {
1833         int i, err, count, newlen;
1834
1835         count = le32_to_cpu(pmkids->bssid_info_count);
1836
1837         if (count > max_pmkids)
1838                 count = max_pmkids;
1839
1840         /* update with new pmkid */
1841         for (i = 0; i < count; i++) {
1842                 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1843                                                         pmksa->bssid))
1844                         continue;
1845
1846                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1847                                                                 WLAN_PMKID_LEN);
1848
1849                 return pmkids;
1850         }
1851
1852         /* out of space, return error */
1853         if (i == max_pmkids) {
1854                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1855                 err = -ENOSPC;
1856                 goto error;
1857         }
1858
1859         /* add new pmkid */
1860         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1861
1862         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1863         if (!pmkids) {
1864                 err = -ENOMEM;
1865                 goto error;
1866         }
1867
1868         pmkids->length = cpu_to_le32(newlen);
1869         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1870
1871         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1872         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1873
1874         return pmkids;
1875 error:
1876         kfree(pmkids);
1877         return ERR_PTR(err);
1878 }
1879
1880 /*
1881  * cfg80211 ops
1882  */
1883 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1884                                         struct net_device *dev,
1885                                         enum nl80211_iftype type, u32 *flags,
1886                                         struct vif_params *params)
1887 {
1888         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1889         struct usbnet *usbdev = priv->usbdev;
1890         int mode;
1891
1892         switch (type) {
1893         case NL80211_IFTYPE_ADHOC:
1894                 mode = NDIS_80211_INFRA_ADHOC;
1895                 break;
1896         case NL80211_IFTYPE_STATION:
1897                 mode = NDIS_80211_INFRA_INFRA;
1898                 break;
1899         default:
1900                 return -EINVAL;
1901         }
1902
1903         priv->wdev.iftype = type;
1904
1905         return set_infra_mode(usbdev, mode);
1906 }
1907
1908 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1909 {
1910         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1911         struct usbnet *usbdev = priv->usbdev;
1912         int err;
1913
1914         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1915                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1916                 if (err < 0)
1917                         return err;
1918         }
1919
1920         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1921                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1922                 if (err < 0)
1923                         return err;
1924         }
1925
1926         return 0;
1927 }
1928
1929 static int rndis_set_tx_power(struct wiphy *wiphy,
1930                               enum nl80211_tx_power_setting type,
1931                               int mbm)
1932 {
1933         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1934         struct usbnet *usbdev = priv->usbdev;
1935
1936         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1937                    __func__, type, mbm);
1938
1939         if (mbm < 0 || (mbm % 100))
1940                 return -ENOTSUPP;
1941
1942         /* Device doesn't support changing txpower after initialization, only
1943          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1944          * currently used.
1945          */
1946         if (type == NL80211_TX_POWER_AUTOMATIC ||
1947             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1948                 if (!priv->radio_on)
1949                         disassociate(usbdev, true); /* turn on radio */
1950
1951                 return 0;
1952         }
1953
1954         return -ENOTSUPP;
1955 }
1956
1957 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1958 {
1959         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1960         struct usbnet *usbdev = priv->usbdev;
1961
1962         *dbm = get_bcm4320_power_dbm(priv);
1963
1964         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1965
1966         return 0;
1967 }
1968
1969 #define SCAN_DELAY_JIFFIES (6 * HZ)
1970 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1971                         struct cfg80211_scan_request *request)
1972 {
1973         struct usbnet *usbdev = netdev_priv(dev);
1974         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1975         int ret;
1976         int delay = SCAN_DELAY_JIFFIES;
1977
1978         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1979
1980         /* Get current bssid list from device before new scan, as new scan
1981          * clears internal bssid list.
1982          */
1983         rndis_check_bssid_list(usbdev, NULL, NULL);
1984
1985         if (!request)
1986                 return -EINVAL;
1987
1988         if (priv->scan_request && priv->scan_request != request)
1989                 return -EBUSY;
1990
1991         priv->scan_request = request;
1992
1993         ret = rndis_start_bssid_list_scan(usbdev);
1994         if (ret == 0) {
1995                 if (priv->device_type == RNDIS_BCM4320A)
1996                         delay = HZ;
1997
1998                 /* Wait before retrieving scan results from device */
1999                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
2000         }
2001
2002         return ret;
2003 }
2004
2005 static bool rndis_bss_info_update(struct usbnet *usbdev,
2006                                   struct ndis_80211_bssid_ex *bssid)
2007 {
2008         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2009         struct ieee80211_channel *channel;
2010         struct cfg80211_bss *bss;
2011         s32 signal;
2012         u64 timestamp;
2013         u16 capability;
2014         u16 beacon_interval;
2015         struct ndis_80211_fixed_ies *fixed;
2016         int ie_len, bssid_len;
2017         u8 *ie;
2018
2019         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
2020                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
2021
2022         /* parse bssid structure */
2023         bssid_len = le32_to_cpu(bssid->length);
2024
2025         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2026                         sizeof(struct ndis_80211_fixed_ies))
2027                 return NULL;
2028
2029         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2030
2031         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2032         ie_len = min(bssid_len - (int)sizeof(*bssid),
2033                                         (int)le32_to_cpu(bssid->ie_length));
2034         ie_len -= sizeof(struct ndis_80211_fixed_ies);
2035         if (ie_len < 0)
2036                 return NULL;
2037
2038         /* extract data for cfg80211_inform_bss */
2039         channel = ieee80211_get_channel(priv->wdev.wiphy,
2040                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2041         if (!channel)
2042                 return NULL;
2043
2044         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2045         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2046         capability = le16_to_cpu(fixed->capabilities);
2047         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2048
2049         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2050                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2051                 GFP_KERNEL);
2052         cfg80211_put_bss(bss);
2053
2054         return (bss != NULL);
2055 }
2056
2057 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2058                                         struct ndis_80211_bssid_ex *bssid,
2059                                         int *bssid_len, void *buf, int len)
2060 {
2061         void *buf_end, *bssid_end;
2062
2063         buf_end = (char *)buf + len;
2064         bssid_end = (char *)bssid + *bssid_len;
2065
2066         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2067                 *bssid_len = 0;
2068                 return NULL;
2069         } else {
2070                 bssid = (void *)((char *)bssid + *bssid_len);
2071                 *bssid_len = le32_to_cpu(bssid->length);
2072                 return bssid;
2073         }
2074 }
2075
2076 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2077                                   int bssid_len, void *buf, int len)
2078 {
2079         void *buf_end, *bssid_end;
2080
2081         if (!bssid || bssid_len <= 0 || bssid_len > len)
2082                 return false;
2083
2084         buf_end = (char *)buf + len;
2085         bssid_end = (char *)bssid + bssid_len;
2086
2087         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2088 }
2089
2090 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2091                                         bool *matched)
2092 {
2093         void *buf = NULL;
2094         struct ndis_80211_bssid_list_ex *bssid_list;
2095         struct ndis_80211_bssid_ex *bssid;
2096         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2097
2098         netdev_dbg(usbdev->net, "%s()\n", __func__);
2099
2100         len = CONTROL_BUFFER_SIZE;
2101 resize_buf:
2102         buf = kzalloc(len, GFP_KERNEL);
2103         if (!buf) {
2104                 ret = -ENOMEM;
2105                 goto out;
2106         }
2107
2108         /* BSSID-list might have got bigger last time we checked, keep
2109          * resizing until it won't get any bigger.
2110          */
2111         new_len = len;
2112         ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2113         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2114                 goto out;
2115
2116         if (new_len > len) {
2117                 len = new_len;
2118                 kfree(buf);
2119                 goto resize_buf;
2120         }
2121
2122         len = new_len;
2123
2124         bssid_list = buf;
2125         count = le32_to_cpu(bssid_list->num_items);
2126         real_count = 0;
2127         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2128
2129         bssid_len = 0;
2130         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2131
2132         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2133          * received 'num_items' and walking through full bssid buffer instead.
2134          */
2135         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2136                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2137                     matched) {
2138                         if (compare_ether_addr(bssid->mac, match_bssid))
2139                                 *matched = true;
2140                 }
2141
2142                 real_count++;
2143                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2144         }
2145
2146         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2147                                 " %d\n", __func__, count, real_count);
2148
2149 out:
2150         kfree(buf);
2151         return ret;
2152 }
2153
2154 static void rndis_get_scan_results(struct work_struct *work)
2155 {
2156         struct rndis_wlan_private *priv =
2157                 container_of(work, struct rndis_wlan_private, scan_work.work);
2158         struct usbnet *usbdev = priv->usbdev;
2159         int ret;
2160
2161         netdev_dbg(usbdev->net, "get_scan_results\n");
2162
2163         if (!priv->scan_request)
2164                 return;
2165
2166         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2167
2168         cfg80211_scan_done(priv->scan_request, ret < 0);
2169
2170         priv->scan_request = NULL;
2171 }
2172
2173 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2174                                         struct cfg80211_connect_params *sme)
2175 {
2176         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2177         struct usbnet *usbdev = priv->usbdev;
2178         struct ieee80211_channel *channel = sme->channel;
2179         struct ndis_80211_ssid ssid;
2180         int pairwise = RNDIS_WLAN_ALG_NONE;
2181         int groupwise = RNDIS_WLAN_ALG_NONE;
2182         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2183         int length, i, ret, chan = -1;
2184
2185         if (channel)
2186                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2187
2188         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2189         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2190                 pairwise |=
2191                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2192
2193         if (sme->crypto.n_ciphers_pairwise > 0 &&
2194                         pairwise == RNDIS_WLAN_ALG_NONE) {
2195                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2196                 return -ENOTSUPP;
2197         }
2198
2199         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2200                 keymgmt |=
2201                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2202
2203         if (sme->crypto.n_akm_suites > 0 &&
2204                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2205                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2206                 return -ENOTSUPP;
2207         }
2208
2209         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2210                    sme->ssid, sme->bssid, chan,
2211                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2212                    groupwise, pairwise, keymgmt);
2213
2214         if (is_associated(usbdev))
2215                 disassociate(usbdev, false);
2216
2217         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2218         if (ret < 0) {
2219                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2220                            ret);
2221                 goto err_turn_radio_on;
2222         }
2223
2224         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2225                                                                 keymgmt);
2226         if (ret < 0) {
2227                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2228                            ret);
2229                 goto err_turn_radio_on;
2230         }
2231
2232         set_priv_filter(usbdev);
2233
2234         ret = set_encr_mode(usbdev, pairwise, groupwise);
2235         if (ret < 0) {
2236                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2237                            ret);
2238                 goto err_turn_radio_on;
2239         }
2240
2241         if (channel) {
2242                 ret = set_channel(usbdev, chan);
2243                 if (ret < 0) {
2244                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2245                                    ret);
2246                         goto err_turn_radio_on;
2247                 }
2248         }
2249
2250         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2251                 priv->encr_tx_key_index = sme->key_idx;
2252                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2253                 if (ret < 0) {
2254                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2255                                    ret, sme->key_len, sme->key_idx);
2256                         goto err_turn_radio_on;
2257                 }
2258         }
2259
2260         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2261                                 !is_broadcast_ether_addr(sme->bssid)) {
2262                 ret = set_bssid(usbdev, sme->bssid);
2263                 if (ret < 0) {
2264                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2265                                    ret);
2266                         goto err_turn_radio_on;
2267                 }
2268         } else
2269                 clear_bssid(usbdev);
2270
2271         length = sme->ssid_len;
2272         if (length > NDIS_802_11_LENGTH_SSID)
2273                 length = NDIS_802_11_LENGTH_SSID;
2274
2275         memset(&ssid, 0, sizeof(ssid));
2276         ssid.length = cpu_to_le32(length);
2277         memcpy(ssid.essid, sme->ssid, length);
2278
2279         /* Pause and purge rx queue, so we don't pass packets before
2280          * 'media connect'-indication.
2281          */
2282         usbnet_pause_rx(usbdev);
2283         usbnet_purge_paused_rxq(usbdev);
2284
2285         ret = set_essid(usbdev, &ssid);
2286         if (ret < 0)
2287                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2288         return ret;
2289
2290 err_turn_radio_on:
2291         disassociate(usbdev, true);
2292
2293         return ret;
2294 }
2295
2296 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2297                                                                 u16 reason_code)
2298 {
2299         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2300         struct usbnet *usbdev = priv->usbdev;
2301
2302         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2303
2304         priv->connected = false;
2305         memset(priv->bssid, 0, ETH_ALEN);
2306
2307         return deauthenticate(usbdev);
2308 }
2309
2310 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2311                                         struct cfg80211_ibss_params *params)
2312 {
2313         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2314         struct usbnet *usbdev = priv->usbdev;
2315         struct ieee80211_channel *channel = params->channel;
2316         struct ndis_80211_ssid ssid;
2317         enum nl80211_auth_type auth_type;
2318         int ret, alg, length, chan = -1;
2319
2320         if (channel)
2321                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2322
2323         /* TODO: How to handle ad-hoc encryption?
2324          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2325          * pre-shared for encryption (open/shared/wpa), is key set before
2326          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2327          */
2328         if (params->privacy) {
2329                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2330                 alg = RNDIS_WLAN_ALG_WEP;
2331         } else {
2332                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2333                 alg = RNDIS_WLAN_ALG_NONE;
2334         }
2335
2336         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2337                    params->ssid, params->bssid, chan, params->privacy);
2338
2339         if (is_associated(usbdev))
2340                 disassociate(usbdev, false);
2341
2342         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2343         if (ret < 0) {
2344                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2345                            ret);
2346                 goto err_turn_radio_on;
2347         }
2348
2349         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2350         if (ret < 0) {
2351                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2352                            ret);
2353                 goto err_turn_radio_on;
2354         }
2355
2356         set_priv_filter(usbdev);
2357
2358         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2359         if (ret < 0) {
2360                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2361                            ret);
2362                 goto err_turn_radio_on;
2363         }
2364
2365         if (channel) {
2366                 ret = set_channel(usbdev, chan);
2367                 if (ret < 0) {
2368                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2369                                    ret);
2370                         goto err_turn_radio_on;
2371                 }
2372         }
2373
2374         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2375                                 !is_broadcast_ether_addr(params->bssid)) {
2376                 ret = set_bssid(usbdev, params->bssid);
2377                 if (ret < 0) {
2378                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2379                                    ret);
2380                         goto err_turn_radio_on;
2381                 }
2382         } else
2383                 clear_bssid(usbdev);
2384
2385         length = params->ssid_len;
2386         if (length > NDIS_802_11_LENGTH_SSID)
2387                 length = NDIS_802_11_LENGTH_SSID;
2388
2389         memset(&ssid, 0, sizeof(ssid));
2390         ssid.length = cpu_to_le32(length);
2391         memcpy(ssid.essid, params->ssid, length);
2392
2393         /* Don't need to pause rx queue for ad-hoc. */
2394         usbnet_purge_paused_rxq(usbdev);
2395         usbnet_resume_rx(usbdev);
2396
2397         ret = set_essid(usbdev, &ssid);
2398         if (ret < 0)
2399                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2400                            ret);
2401         return ret;
2402
2403 err_turn_radio_on:
2404         disassociate(usbdev, true);
2405
2406         return ret;
2407 }
2408
2409 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2410 {
2411         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2412         struct usbnet *usbdev = priv->usbdev;
2413
2414         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2415
2416         priv->connected = false;
2417         memset(priv->bssid, 0, ETH_ALEN);
2418
2419         return deauthenticate(usbdev);
2420 }
2421
2422 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2423         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2424 {
2425         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2426         struct usbnet *usbdev = priv->usbdev;
2427
2428         return set_channel(usbdev,
2429                         ieee80211_frequency_to_channel(chan->center_freq));
2430 }
2431
2432 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2433                          u8 key_index, bool pairwise, const u8 *mac_addr,
2434                          struct key_params *params)
2435 {
2436         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2437         struct usbnet *usbdev = priv->usbdev;
2438         __le32 flags;
2439
2440         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2441                    __func__, key_index, mac_addr, params->cipher);
2442
2443         switch (params->cipher) {
2444         case WLAN_CIPHER_SUITE_WEP40:
2445         case WLAN_CIPHER_SUITE_WEP104:
2446                 return add_wep_key(usbdev, params->key, params->key_len,
2447                                                                 key_index);
2448         case WLAN_CIPHER_SUITE_TKIP:
2449         case WLAN_CIPHER_SUITE_CCMP:
2450                 flags = 0;
2451
2452                 if (params->seq && params->seq_len > 0)
2453                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2454                 if (mac_addr)
2455                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2456                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2457
2458                 return add_wpa_key(usbdev, params->key, params->key_len,
2459                                 key_index, mac_addr, params->seq,
2460                                 params->seq_len, params->cipher, flags);
2461         default:
2462                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2463                            __func__, params->cipher);
2464                 return -ENOTSUPP;
2465         }
2466 }
2467
2468 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2469                          u8 key_index, bool pairwise, const u8 *mac_addr)
2470 {
2471         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2472         struct usbnet *usbdev = priv->usbdev;
2473
2474         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2475
2476         return remove_key(usbdev, key_index, mac_addr);
2477 }
2478
2479 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2480                                  u8 key_index, bool unicast, bool multicast)
2481 {
2482         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2483         struct usbnet *usbdev = priv->usbdev;
2484         struct rndis_wlan_encr_key key;
2485
2486         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2487
2488         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2489                 return -ENOENT;
2490
2491         priv->encr_tx_key_index = key_index;
2492
2493         if (is_wpa_key(priv, key_index))
2494                 return 0;
2495
2496         key = priv->encr_keys[key_index];
2497
2498         return add_wep_key(usbdev, key.material, key.len, key_index);
2499 }
2500
2501 static void rndis_fill_station_info(struct usbnet *usbdev,
2502                                                 struct station_info *sinfo)
2503 {
2504         __le32 linkspeed, rssi;
2505         int ret, len;
2506
2507         memset(sinfo, 0, sizeof(*sinfo));
2508
2509         len = sizeof(linkspeed);
2510         ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2511         if (ret == 0) {
2512                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2513                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2514         }
2515
2516         len = sizeof(rssi);
2517         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2518         if (ret == 0) {
2519                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2520                 sinfo->filled |= STATION_INFO_SIGNAL;
2521         }
2522 }
2523
2524 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2525                                         u8 *mac, struct station_info *sinfo)
2526 {
2527         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2528         struct usbnet *usbdev = priv->usbdev;
2529
2530         if (compare_ether_addr(priv->bssid, mac))
2531                 return -ENOENT;
2532
2533         rndis_fill_station_info(usbdev, sinfo);
2534
2535         return 0;
2536 }
2537
2538 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2539                                int idx, u8 *mac, struct station_info *sinfo)
2540 {
2541         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2542         struct usbnet *usbdev = priv->usbdev;
2543
2544         if (idx != 0)
2545                 return -ENOENT;
2546
2547         memcpy(mac, priv->bssid, ETH_ALEN);
2548
2549         rndis_fill_station_info(usbdev, sinfo);
2550
2551         return 0;
2552 }
2553
2554 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2555                                 struct cfg80211_pmksa *pmksa)
2556 {
2557         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2558         struct usbnet *usbdev = priv->usbdev;
2559         struct ndis_80211_pmkid *pmkids;
2560         u32 *tmp = (u32 *)pmksa->pmkid;
2561
2562         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2563                         pmksa->bssid,
2564                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2565                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2566
2567         pmkids = get_device_pmkids(usbdev);
2568         if (IS_ERR(pmkids)) {
2569                 /* couldn't read PMKID cache from device */
2570                 return PTR_ERR(pmkids);
2571         }
2572
2573         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2574         if (IS_ERR(pmkids)) {
2575                 /* not found, list full, etc */
2576                 return PTR_ERR(pmkids);
2577         }
2578
2579         return set_device_pmkids(usbdev, pmkids);
2580 }
2581
2582 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2583                                 struct cfg80211_pmksa *pmksa)
2584 {
2585         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2586         struct usbnet *usbdev = priv->usbdev;
2587         struct ndis_80211_pmkid *pmkids;
2588         u32 *tmp = (u32 *)pmksa->pmkid;
2589
2590         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2591                         pmksa->bssid,
2592                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2593                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2594
2595         pmkids = get_device_pmkids(usbdev);
2596         if (IS_ERR(pmkids)) {
2597                 /* Couldn't read PMKID cache from device */
2598                 return PTR_ERR(pmkids);
2599         }
2600
2601         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2602         if (IS_ERR(pmkids)) {
2603                 /* not found, etc */
2604                 return PTR_ERR(pmkids);
2605         }
2606
2607         return set_device_pmkids(usbdev, pmkids);
2608 }
2609
2610 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2611 {
2612         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2613         struct usbnet *usbdev = priv->usbdev;
2614         struct ndis_80211_pmkid pmkid;
2615
2616         netdev_dbg(usbdev->net, "%s()\n", __func__);
2617
2618         memset(&pmkid, 0, sizeof(pmkid));
2619
2620         pmkid.length = cpu_to_le32(sizeof(pmkid));
2621         pmkid.bssid_info_count = cpu_to_le32(0);
2622
2623         return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2624 }
2625
2626 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2627                                 bool enabled, int timeout)
2628 {
2629         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2630         struct usbnet *usbdev = priv->usbdev;
2631         int power_mode;
2632         __le32 mode;
2633         int ret;
2634
2635         if (priv->device_type != RNDIS_BCM4320B)
2636                 return -ENOTSUPP;
2637
2638         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2639                                 enabled ? "enabled" : "disabled",
2640                                 timeout);
2641
2642         if (enabled)
2643                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2644         else
2645                 power_mode = NDIS_80211_POWER_MODE_CAM;
2646
2647         if (power_mode == priv->power_mode)
2648                 return 0;
2649
2650         priv->power_mode = power_mode;
2651
2652         mode = cpu_to_le32(power_mode);
2653         ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2654
2655         netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2656                                 __func__, ret);
2657
2658         return ret;
2659 }
2660
2661 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2662                                         struct net_device *dev,
2663                                         s32 rssi_thold, u32 rssi_hyst)
2664 {
2665         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2666
2667         priv->cqm_rssi_thold = rssi_thold;
2668         priv->cqm_rssi_hyst = rssi_hyst;
2669         priv->last_cqm_event_rssi = 0;
2670
2671         return 0;
2672 }
2673
2674 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2675                                            struct ndis_80211_assoc_info *info)
2676 {
2677         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2678         struct ieee80211_channel *channel;
2679         struct ndis_80211_ssid ssid;
2680         struct cfg80211_bss *bss;
2681         s32 signal;
2682         u64 timestamp;
2683         u16 capability;
2684         u16 beacon_interval = 0;
2685         __le32 rssi;
2686         u8 ie_buf[34];
2687         int len, ret, ie_len;
2688
2689         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2690         len = sizeof(rssi);
2691         rssi = 0;
2692         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2693         signal = level_to_qual(le32_to_cpu(rssi));
2694
2695         netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2696                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2697                    level_to_qual(le32_to_cpu(rssi)));
2698
2699         /* Get AP capabilities */
2700         if (info) {
2701                 capability = le16_to_cpu(info->resp_ie.capa);
2702         } else {
2703                 /* Set atleast ESS/IBSS capability */
2704                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2705                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2706         }
2707
2708         /* Get channel and beacon interval */
2709         channel = get_current_channel(usbdev, &beacon_interval);
2710         if (!channel) {
2711                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2712                                         __func__);
2713                 return;
2714         }
2715
2716         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2717         len = sizeof(ssid);
2718         memset(&ssid, 0, sizeof(ssid));
2719         ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2720         netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2721                                 "'%.32s'\n", __func__, ret,
2722                                 le32_to_cpu(ssid.length), ssid.essid);
2723
2724         if (le32_to_cpu(ssid.length) > 32)
2725                 ssid.length = cpu_to_le32(32);
2726
2727         ie_buf[0] = WLAN_EID_SSID;
2728         ie_buf[1] = le32_to_cpu(ssid.length);
2729         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2730
2731         ie_len = le32_to_cpu(ssid.length) + 2;
2732
2733         /* no tsf */
2734         timestamp = 0;
2735
2736         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2737                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2738                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2739                 bssid, (u32)timestamp, capability, beacon_interval, ie_len,
2740                 ssid.essid, signal);
2741
2742         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2743                 timestamp, capability, beacon_interval, ie_buf, ie_len,
2744                 signal, GFP_KERNEL);
2745         cfg80211_put_bss(bss);
2746 }
2747
2748 /*
2749  * workers, indication handlers, device poller
2750  */
2751 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2752 {
2753         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2754         struct ndis_80211_assoc_info *info = NULL;
2755         u8 bssid[ETH_ALEN];
2756         unsigned int resp_ie_len, req_ie_len;
2757         unsigned int offset;
2758         u8 *req_ie, *resp_ie;
2759         int ret;
2760         bool roamed = false;
2761         bool match_bss;
2762
2763         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2764                 /* received media connect indication while connected, either
2765                  * device reassociated with same AP or roamed to new. */
2766                 roamed = true;
2767         }
2768
2769         req_ie_len = 0;
2770         resp_ie_len = 0;
2771         req_ie = NULL;
2772         resp_ie = NULL;
2773
2774         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2775                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2776                 if (!info) {
2777                         /* No memory? Try resume work later */
2778                         set_bit(WORK_LINK_UP, &priv->work_pending);
2779                         queue_work(priv->workqueue, &priv->work);
2780                         return;
2781                 }
2782
2783                 /* Get association info IEs from device. */
2784                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2785                 if (!ret) {
2786                         req_ie_len = le32_to_cpu(info->req_ie_length);
2787                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2788                                 req_ie_len = CONTROL_BUFFER_SIZE;
2789                         if (req_ie_len != 0) {
2790                                 offset = le32_to_cpu(info->offset_req_ies);
2791
2792                                 if (offset > CONTROL_BUFFER_SIZE)
2793                                         offset = CONTROL_BUFFER_SIZE;
2794
2795                                 req_ie = (u8 *)info + offset;
2796
2797                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2798                                         req_ie_len =
2799                                                 CONTROL_BUFFER_SIZE - offset;
2800                         }
2801
2802                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2803                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2804                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2805                         if (resp_ie_len != 0) {
2806                                 offset = le32_to_cpu(info->offset_resp_ies);
2807
2808                                 if (offset > CONTROL_BUFFER_SIZE)
2809                                         offset = CONTROL_BUFFER_SIZE;
2810
2811                                 resp_ie = (u8 *)info + offset;
2812
2813                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2814                                         resp_ie_len =
2815                                                 CONTROL_BUFFER_SIZE - offset;
2816                         }
2817                 } else {
2818                         /* Since rndis_wlan_craft_connected_bss() might use info
2819                          * later and expects info to contain valid data if
2820                          * non-null, free info and set NULL here.
2821                          */
2822                         kfree(info);
2823                         info = NULL;
2824                 }
2825         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2826                 return;
2827
2828         ret = get_bssid(usbdev, bssid);
2829         if (ret < 0)
2830                 memset(bssid, 0, sizeof(bssid));
2831
2832         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2833                    bssid, roamed ? " roamed" : "");
2834
2835         /* Internal bss list in device should contain at least the currently
2836          * connected bss and we can get it to cfg80211 with
2837          * rndis_check_bssid_list().
2838          *
2839          * NDIS spec says: "If the device is associated, but the associated
2840          *  BSSID is not in its BSSID scan list, then the driver must add an
2841          *  entry for the BSSID at the end of the data that it returns in
2842          *  response to query of OID_802_11_BSSID_LIST."
2843          *
2844          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2845          */
2846         match_bss = false;
2847         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2848
2849         if (!is_zero_ether_addr(bssid) && !match_bss) {
2850                 /* Couldn't get bss from device, we need to manually craft bss
2851                  * for cfg80211.
2852                  */
2853                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2854         }
2855
2856         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2857                 if (!roamed)
2858                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2859                                                 req_ie_len, resp_ie,
2860                                                 resp_ie_len, 0, GFP_KERNEL);
2861                 else
2862                         cfg80211_roamed(usbdev->net,
2863                                         get_current_channel(usbdev, NULL),
2864                                         bssid, req_ie, req_ie_len,
2865                                         resp_ie, resp_ie_len, GFP_KERNEL);
2866         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2867                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2868
2869         if (info != NULL)
2870                 kfree(info);
2871
2872         priv->connected = true;
2873         memcpy(priv->bssid, bssid, ETH_ALEN);
2874
2875         usbnet_resume_rx(usbdev);
2876         netif_carrier_on(usbdev->net);
2877 }
2878
2879 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2880 {
2881         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2882
2883         if (priv->connected) {
2884                 priv->connected = false;
2885                 memset(priv->bssid, 0, ETH_ALEN);
2886
2887                 deauthenticate(usbdev);
2888
2889                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2890         }
2891
2892         netif_carrier_off(usbdev->net);
2893 }
2894
2895 static void rndis_wlan_worker(struct work_struct *work)
2896 {
2897         struct rndis_wlan_private *priv =
2898                 container_of(work, struct rndis_wlan_private, work);
2899         struct usbnet *usbdev = priv->usbdev;
2900
2901         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2902                 rndis_wlan_do_link_up_work(usbdev);
2903
2904         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2905                 rndis_wlan_do_link_down_work(usbdev);
2906
2907         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2908                 set_multicast_list(usbdev);
2909 }
2910
2911 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2912 {
2913         struct usbnet *usbdev = netdev_priv(dev);
2914         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2915
2916         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2917                 return;
2918
2919         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2920         queue_work(priv->workqueue, &priv->work);
2921 }
2922
2923 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2924                                 struct ndis_80211_status_indication *indication,
2925                                 int len)
2926 {
2927         u8 *buf;
2928         const char *type;
2929         int flags, buflen, key_id;
2930         bool pairwise_error, group_error;
2931         struct ndis_80211_auth_request *auth_req;
2932         enum nl80211_key_type key_type;
2933
2934         /* must have at least one array entry */
2935         if (len < offsetof(struct ndis_80211_status_indication, u) +
2936                                 sizeof(struct ndis_80211_auth_request)) {
2937                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2938                             len);
2939                 return;
2940         }
2941
2942         buf = (void *)&indication->u.auth_request[0];
2943         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2944
2945         while (buflen >= sizeof(*auth_req)) {
2946                 auth_req = (void *)buf;
2947                 type = "unknown";
2948                 flags = le32_to_cpu(auth_req->flags);
2949                 pairwise_error = false;
2950                 group_error = false;
2951
2952                 if (flags & 0x1)
2953                         type = "reauth request";
2954                 if (flags & 0x2)
2955                         type = "key update request";
2956                 if (flags & 0x6) {
2957                         pairwise_error = true;
2958                         type = "pairwise_error";
2959                 }
2960                 if (flags & 0xe) {
2961                         group_error = true;
2962                         type = "group_error";
2963                 }
2964
2965                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2966                             type, le32_to_cpu(auth_req->flags));
2967
2968                 if (pairwise_error) {
2969                         key_type = NL80211_KEYTYPE_PAIRWISE;
2970                         key_id = -1;
2971
2972                         cfg80211_michael_mic_failure(usbdev->net,
2973                                                         auth_req->bssid,
2974                                                         key_type, key_id, NULL,
2975                                                         GFP_KERNEL);
2976                 }
2977
2978                 if (group_error) {
2979                         key_type = NL80211_KEYTYPE_GROUP;
2980                         key_id = -1;
2981
2982                         cfg80211_michael_mic_failure(usbdev->net,
2983                                                         auth_req->bssid,
2984                                                         key_type, key_id, NULL,
2985                                                         GFP_KERNEL);
2986                 }
2987
2988                 buflen -= le32_to_cpu(auth_req->length);
2989                 buf += le32_to_cpu(auth_req->length);
2990         }
2991 }
2992
2993 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2994                                 struct ndis_80211_status_indication *indication,
2995                                 int len)
2996 {
2997         struct ndis_80211_pmkid_cand_list *cand_list;
2998         int list_len, expected_len, i;
2999
3000         if (len < offsetof(struct ndis_80211_status_indication, u) +
3001                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
3002                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
3003                             len);
3004                 return;
3005         }
3006
3007         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
3008                         sizeof(struct ndis_80211_pmkid_candidate);
3009         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
3010                         offsetof(struct ndis_80211_status_indication, u);
3011
3012         if (len < expected_len) {
3013                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
3014                             len, expected_len);
3015                 return;
3016         }
3017
3018         cand_list = &indication->u.cand_list;
3019
3020         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
3021                     le32_to_cpu(cand_list->version),
3022                     le32_to_cpu(cand_list->num_candidates));
3023
3024         if (le32_to_cpu(cand_list->version) != 1)
3025                 return;
3026
3027         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3028                 struct ndis_80211_pmkid_candidate *cand =
3029                                                 &cand_list->candidate_list[i];
3030                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3031
3032                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3033                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3034
3035                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3036                                                 preauth, GFP_ATOMIC);
3037         }
3038 }
3039
3040 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3041                         struct rndis_indicate *msg, int buflen)
3042 {
3043         struct ndis_80211_status_indication *indication;
3044         int len, offset;
3045
3046         offset = offsetof(struct rndis_indicate, status) +
3047                         le32_to_cpu(msg->offset);
3048         len = le32_to_cpu(msg->length);
3049
3050         if (len < 8) {
3051                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3052                             len);
3053                 return;
3054         }
3055
3056         if (offset + len > buflen) {
3057                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3058                             offset + len, buflen);
3059                 return;
3060         }
3061
3062         indication = (void *)((u8 *)msg + offset);
3063
3064         switch (le32_to_cpu(indication->status_type)) {
3065         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3066                 netdev_info(usbdev->net, "radio state indication: %i\n",
3067                             le32_to_cpu(indication->u.radio_status));
3068                 return;
3069
3070         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3071                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3072                             le32_to_cpu(indication->u.media_stream_mode));
3073                 return;
3074
3075         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3076                 rndis_wlan_auth_indication(usbdev, indication, len);
3077                 return;
3078
3079         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3080                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3081                 return;
3082
3083         default:
3084                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3085                             le32_to_cpu(indication->status_type));
3086         }
3087 }
3088
3089 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3090 {
3091         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3092         struct rndis_indicate *msg = ind;
3093
3094         switch (msg->status) {
3095         case RNDIS_STATUS_MEDIA_CONNECT:
3096                 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3097                         /* OID_802_11_ADD_KEY causes sometimes extra
3098                          * "media connect" indications which confuses driver
3099                          * and userspace to think that device is
3100                          * roaming/reassociating when it isn't.
3101                          */
3102                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3103                         return;
3104                 }
3105
3106                 usbnet_pause_rx(usbdev);
3107
3108                 netdev_info(usbdev->net, "media connect\n");
3109
3110                 /* queue work to avoid recursive calls into rndis_command */
3111                 set_bit(WORK_LINK_UP, &priv->work_pending);
3112                 queue_work(priv->workqueue, &priv->work);
3113                 break;
3114
3115         case RNDIS_STATUS_MEDIA_DISCONNECT:
3116                 netdev_info(usbdev->net, "media disconnect\n");
3117
3118                 /* queue work to avoid recursive calls into rndis_command */
3119                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3120                 queue_work(priv->workqueue, &priv->work);
3121                 break;
3122
3123         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3124                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3125                 break;
3126
3127         default:
3128                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3129                             le32_to_cpu(msg->status));
3130                 break;
3131         }
3132 }
3133
3134 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3135 {
3136         struct {
3137                 __le32  num_items;
3138                 __le32  items[8];
3139         } networks_supported;
3140         struct ndis_80211_capability *caps;
3141         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3142         int len, retval, i, n;
3143         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3144
3145         /* determine supported modes */
3146         len = sizeof(networks_supported);
3147         retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3148                                                 &networks_supported, &len);
3149         if (retval >= 0) {
3150                 n = le32_to_cpu(networks_supported.num_items);
3151                 if (n > 8)
3152                         n = 8;
3153                 for (i = 0; i < n; i++) {
3154                         switch (le32_to_cpu(networks_supported.items[i])) {
3155                         case NDIS_80211_TYPE_FREQ_HOP:
3156                         case NDIS_80211_TYPE_DIRECT_SEQ:
3157                                 priv->caps |= CAP_MODE_80211B;
3158                                 break;
3159                         case NDIS_80211_TYPE_OFDM_A:
3160                                 priv->caps |= CAP_MODE_80211A;
3161                                 break;
3162                         case NDIS_80211_TYPE_OFDM_G:
3163                                 priv->caps |= CAP_MODE_80211G;
3164                                 break;
3165                         }
3166                 }
3167         }
3168
3169         /* get device 802.11 capabilities, number of PMKIDs */
3170         caps = (struct ndis_80211_capability *)caps_buf;
3171         len = sizeof(caps_buf);
3172         retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3173         if (retval >= 0) {
3174                 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3175                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3176                                 le32_to_cpu(caps->length),
3177                                 le32_to_cpu(caps->version),
3178                                 le32_to_cpu(caps->num_pmkids),
3179                                 le32_to_cpu(caps->num_auth_encr_pair));
3180                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3181         } else
3182                 wiphy->max_num_pmkids = 0;
3183
3184         return retval;
3185 }
3186
3187 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3188 {
3189         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3190         enum nl80211_cqm_rssi_threshold_event event;
3191         int thold, hyst, last_event;
3192
3193         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3194                 return;
3195         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3196                 return;
3197
3198         last_event = priv->last_cqm_event_rssi;
3199         thold = priv->cqm_rssi_thold;
3200         hyst = priv->cqm_rssi_hyst;
3201
3202         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3203                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3204         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3205                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3206         else
3207                 return;
3208
3209         priv->last_cqm_event_rssi = rssi;
3210         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3211 }
3212
3213 #define DEVICE_POLLER_JIFFIES (HZ)
3214 static void rndis_device_poller(struct work_struct *work)
3215 {
3216         struct rndis_wlan_private *priv =
3217                 container_of(work, struct rndis_wlan_private,
3218                                                         dev_poller_work.work);
3219         struct usbnet *usbdev = priv->usbdev;
3220         __le32 rssi, tmp;
3221         int len, ret, j;
3222         int update_jiffies = DEVICE_POLLER_JIFFIES;
3223         void *buf;
3224
3225         /* Only check/do workaround when connected. Calling is_associated()
3226          * also polls device with rndis_command() and catches for media link
3227          * indications.
3228          */
3229         if (!is_associated(usbdev)) {
3230                 /* Workaround bad scanning in BCM4320a devices with active
3231                  * background scanning when not associated.
3232                  */
3233                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3234                     !priv->scan_request) {
3235                         /* Get previous scan results */
3236                         rndis_check_bssid_list(usbdev, NULL, NULL);
3237
3238                         /* Initiate new scan */
3239                         rndis_start_bssid_list_scan(usbdev);
3240                 }
3241
3242                 goto end;
3243         }
3244
3245         len = sizeof(rssi);
3246         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3247         if (ret == 0) {
3248                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3249                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3250         }
3251
3252         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3253                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3254
3255         /* Workaround transfer stalls on poor quality links.
3256          * TODO: find right way to fix these stalls (as stalls do not happen
3257          * with ndiswrapper/windows driver). */
3258         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3259                 /* Decrease stats worker interval to catch stalls.
3260                  * faster. Faster than 400-500ms causes packet loss,
3261                  * Slower doesn't catch stalls fast enough.
3262                  */
3263                 j = msecs_to_jiffies(priv->param_workaround_interval);
3264                 if (j > DEVICE_POLLER_JIFFIES)
3265                         j = DEVICE_POLLER_JIFFIES;
3266                 else if (j <= 0)
3267                         j = 1;
3268                 update_jiffies = j;
3269
3270                 /* Send scan OID. Use of both OIDs is required to get device
3271                  * working.
3272                  */
3273                 tmp = cpu_to_le32(1);
3274                 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3275                                                                 sizeof(tmp));
3276
3277                 len = CONTROL_BUFFER_SIZE;
3278                 buf = kmalloc(len, GFP_KERNEL);
3279                 if (!buf)
3280                         goto end;
3281
3282                 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3283                 kfree(buf);
3284         }
3285
3286 end:
3287         if (update_jiffies >= HZ)
3288                 update_jiffies = round_jiffies_relative(update_jiffies);
3289         else {
3290                 j = round_jiffies_relative(update_jiffies);
3291                 if (abs(j - update_jiffies) <= 10)
3292                         update_jiffies = j;
3293         }
3294
3295         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3296                                                                 update_jiffies);
3297 }
3298
3299 /*
3300  * driver/device initialization
3301  */
3302 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3303 {
3304         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3305
3306         priv->device_type = device_type;
3307
3308         priv->param_country[0] = modparam_country[0];
3309         priv->param_country[1] = modparam_country[1];
3310         priv->param_country[2] = 0;
3311         priv->param_frameburst   = modparam_frameburst;
3312         priv->param_afterburner  = modparam_afterburner;
3313         priv->param_power_save   = modparam_power_save;
3314         priv->param_power_output = modparam_power_output;
3315         priv->param_roamtrigger  = modparam_roamtrigger;
3316         priv->param_roamdelta    = modparam_roamdelta;
3317
3318         priv->param_country[0] = toupper(priv->param_country[0]);
3319         priv->param_country[1] = toupper(priv->param_country[1]);
3320         /* doesn't support EU as country code, use FI instead */
3321         if (!strcmp(priv->param_country, "EU"))
3322                 strcpy(priv->param_country, "FI");
3323
3324         if (priv->param_power_save < 0)
3325                 priv->param_power_save = 0;
3326         else if (priv->param_power_save > 2)
3327                 priv->param_power_save = 2;
3328
3329         if (priv->param_power_output < 0)
3330                 priv->param_power_output = 0;
3331         else if (priv->param_power_output > 3)
3332                 priv->param_power_output = 3;
3333
3334         if (priv->param_roamtrigger < -80)
3335                 priv->param_roamtrigger = -80;
3336         else if (priv->param_roamtrigger > -60)
3337                 priv->param_roamtrigger = -60;
3338
3339         if (priv->param_roamdelta < 0)
3340                 priv->param_roamdelta = 0;
3341         else if (priv->param_roamdelta > 2)
3342                 priv->param_roamdelta = 2;
3343
3344         if (modparam_workaround_interval < 0)
3345                 priv->param_workaround_interval = 500;
3346         else
3347                 priv->param_workaround_interval = modparam_workaround_interval;
3348 }
3349
3350 static int unknown_early_init(struct usbnet *usbdev)
3351 {
3352         /* copy module parameters for unknown so that iwconfig reports txpower
3353          * and workaround parameter is copied to private structure correctly.
3354          */
3355         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3356
3357         /* This is unknown device, so do not try set configuration parameters.
3358          */
3359
3360         return 0;
3361 }
3362
3363 static int bcm4320a_early_init(struct usbnet *usbdev)
3364 {
3365         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3366          * and workaround parameter is copied to private structure correctly.
3367          */
3368         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3369
3370         /* bcm4320a doesn't handle configuration parameters well. Try
3371          * set any and you get partially zeroed mac and broken device.
3372          */
3373
3374         return 0;
3375 }
3376
3377 static int bcm4320b_early_init(struct usbnet *usbdev)
3378 {
3379         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3380         char buf[8];
3381
3382         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3383
3384         /* Early initialization settings, setting these won't have effect
3385          * if called after generic_rndis_bind().
3386          */
3387
3388         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3389         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3390                                         priv->param_frameburst ? "1" : "0");
3391         rndis_set_config_parameter_str(usbdev, "Afterburner",
3392                                         priv->param_afterburner ? "1" : "0");
3393         sprintf(buf, "%d", priv->param_power_save);
3394         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3395         sprintf(buf, "%d", priv->param_power_output);
3396         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3397         sprintf(buf, "%d", priv->param_roamtrigger);
3398         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3399         sprintf(buf, "%d", priv->param_roamdelta);
3400         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3401
3402         return 0;
3403 }
3404
3405 /* same as rndis_netdev_ops but with local multicast handler */
3406 static const struct net_device_ops rndis_wlan_netdev_ops = {
3407         .ndo_open               = usbnet_open,
3408         .ndo_stop               = usbnet_stop,
3409         .ndo_start_xmit         = usbnet_start_xmit,
3410         .ndo_tx_timeout         = usbnet_tx_timeout,
3411         .ndo_set_mac_address    = eth_mac_addr,
3412         .ndo_validate_addr      = eth_validate_addr,
3413         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3414 };
3415
3416 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3417 {
3418         struct wiphy *wiphy;
3419         struct rndis_wlan_private *priv;
3420         int retval, len;
3421         __le32 tmp;
3422
3423         /* allocate wiphy and rndis private data
3424          * NOTE: We only support a single virtual interface, so wiphy
3425          * and wireless_dev are somewhat synonymous for this device.
3426          */
3427         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3428         if (!wiphy)
3429                 return -ENOMEM;
3430
3431         priv = wiphy_priv(wiphy);
3432         usbdev->net->ieee80211_ptr = &priv->wdev;
3433         priv->wdev.wiphy = wiphy;
3434         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3435
3436         /* These have to be initialized before calling generic_rndis_bind().
3437          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3438          */
3439         usbdev->driver_priv = priv;
3440         priv->usbdev = usbdev;
3441
3442         mutex_init(&priv->command_lock);
3443
3444         /* because rndis_command() sleeps we need to use workqueue */
3445         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3446         INIT_WORK(&priv->work, rndis_wlan_worker);
3447         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3448         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3449
3450         /* try bind rndis_host */
3451         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3452         if (retval < 0)
3453                 goto fail;
3454
3455         /* generic_rndis_bind set packet filter to multicast_all+
3456          * promisc mode which doesn't work well for our devices (device
3457          * picks up rssi to closest station instead of to access point).
3458          *
3459          * rndis_host wants to avoid all OID as much as possible
3460          * so do promisc/multicast handling in rndis_wlan.
3461          */
3462         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3463
3464         tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3465         retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3466                                                                 sizeof(tmp));
3467
3468         len = sizeof(tmp);
3469         retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3470                                                                 &len);
3471         priv->multicast_size = le32_to_cpu(tmp);
3472         if (retval < 0 || priv->multicast_size < 0)
3473                 priv->multicast_size = 0;
3474         if (priv->multicast_size > 0)
3475                 usbdev->net->flags |= IFF_MULTICAST;
3476         else
3477                 usbdev->net->flags &= ~IFF_MULTICAST;
3478
3479         /* fill-out wiphy structure and register w/ cfg80211 */
3480         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3481         wiphy->privid = rndis_wiphy_privid;
3482         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3483                                         | BIT(NL80211_IFTYPE_ADHOC);
3484         wiphy->max_scan_ssids = 1;
3485
3486         /* TODO: fill-out band/encr information based on priv->caps */
3487         rndis_wlan_get_caps(usbdev, wiphy);
3488
3489         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3490         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3491         priv->band.channels = priv->channels;
3492         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3493         priv->band.bitrates = priv->rates;
3494         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3495         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3496         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3497
3498         memcpy(priv->cipher_suites, rndis_cipher_suites,
3499                                                 sizeof(rndis_cipher_suites));
3500         wiphy->cipher_suites = priv->cipher_suites;
3501         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3502
3503         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3504
3505         if (wiphy_register(wiphy)) {
3506                 retval = -ENODEV;
3507                 goto fail;
3508         }
3509
3510         set_default_iw_params(usbdev);
3511
3512         priv->power_mode = -1;
3513
3514         /* set default rts/frag */
3515         rndis_set_wiphy_params(wiphy,
3516                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3517
3518         /* turn radio off on init */
3519         priv->radio_on = false;
3520         disassociate(usbdev, false);
3521         netif_carrier_off(usbdev->net);
3522
3523         return 0;
3524
3525 fail:
3526         cancel_delayed_work_sync(&priv->dev_poller_work);
3527         cancel_delayed_work_sync(&priv->scan_work);
3528         cancel_work_sync(&priv->work);
3529         flush_workqueue(priv->workqueue);
3530         destroy_workqueue(priv->workqueue);
3531
3532         wiphy_free(wiphy);
3533         return retval;
3534 }
3535
3536 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3537 {
3538         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3539
3540         /* turn radio off */
3541         disassociate(usbdev, false);
3542
3543         cancel_delayed_work_sync(&priv->dev_poller_work);
3544         cancel_delayed_work_sync(&priv->scan_work);
3545         cancel_work_sync(&priv->work);
3546         flush_workqueue(priv->workqueue);
3547         destroy_workqueue(priv->workqueue);
3548
3549         rndis_unbind(usbdev, intf);
3550
3551         wiphy_unregister(priv->wdev.wiphy);
3552         wiphy_free(priv->wdev.wiphy);
3553 }
3554
3555 static int rndis_wlan_reset(struct usbnet *usbdev)
3556 {
3557         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3558         int retval;
3559
3560         netdev_dbg(usbdev->net, "%s()\n", __func__);
3561
3562         retval = rndis_reset(usbdev);
3563         if (retval)
3564                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3565
3566         /* rndis_reset cleared multicast list, so restore here.
3567            (set_multicast_list() also turns on current packet filter) */
3568         set_multicast_list(usbdev);
3569
3570         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3571                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3572
3573         return deauthenticate(usbdev);
3574 }
3575
3576 static int rndis_wlan_stop(struct usbnet *usbdev)
3577 {
3578         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3579         int retval;
3580         __le32 filter;
3581
3582         netdev_dbg(usbdev->net, "%s()\n", __func__);
3583
3584         retval = disassociate(usbdev, false);
3585
3586         priv->work_pending = 0;
3587         cancel_delayed_work_sync(&priv->dev_poller_work);
3588         cancel_delayed_work_sync(&priv->scan_work);
3589         cancel_work_sync(&priv->work);
3590         flush_workqueue(priv->workqueue);
3591
3592         if (priv->scan_request) {
3593                 cfg80211_scan_done(priv->scan_request, true);
3594                 priv->scan_request = NULL;
3595         }
3596
3597         /* Set current packet filter zero to block receiving data packets from
3598            device. */
3599         filter = 0;
3600         rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3601                                                                 sizeof(filter));
3602
3603         return retval;
3604 }
3605
3606 static const struct driver_info bcm4320b_info = {
3607         .description =  "Wireless RNDIS device, BCM4320b based",
3608         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3609                                 FLAG_AVOID_UNLINK_URBS,
3610         .bind =         rndis_wlan_bind,
3611         .unbind =       rndis_wlan_unbind,
3612         .status =       rndis_status,
3613         .rx_fixup =     rndis_rx_fixup,
3614         .tx_fixup =     rndis_tx_fixup,
3615         .reset =        rndis_wlan_reset,
3616         .stop =         rndis_wlan_stop,
3617         .early_init =   bcm4320b_early_init,
3618         .indication =   rndis_wlan_indication,
3619 };
3620
3621 static const struct driver_info bcm4320a_info = {
3622         .description =  "Wireless RNDIS device, BCM4320a based",
3623         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3624                                 FLAG_AVOID_UNLINK_URBS,
3625         .bind =         rndis_wlan_bind,
3626         .unbind =       rndis_wlan_unbind,
3627         .status =       rndis_status,
3628         .rx_fixup =     rndis_rx_fixup,
3629         .tx_fixup =     rndis_tx_fixup,
3630         .reset =        rndis_wlan_reset,
3631         .stop =         rndis_wlan_stop,
3632         .early_init =   bcm4320a_early_init,
3633         .indication =   rndis_wlan_indication,
3634 };
3635
3636 static const struct driver_info rndis_wlan_info = {
3637         .description =  "Wireless RNDIS device",
3638         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3639                                 FLAG_AVOID_UNLINK_URBS,
3640         .bind =         rndis_wlan_bind,
3641         .unbind =       rndis_wlan_unbind,
3642         .status =       rndis_status,
3643         .rx_fixup =     rndis_rx_fixup,
3644         .tx_fixup =     rndis_tx_fixup,
3645         .reset =        rndis_wlan_reset,
3646         .stop =         rndis_wlan_stop,
3647         .early_init =   unknown_early_init,
3648         .indication =   rndis_wlan_indication,
3649 };
3650
3651 /*-------------------------------------------------------------------------*/
3652
3653 static const struct usb_device_id products [] = {
3654 #define RNDIS_MASTER_INTERFACE \
3655         .bInterfaceClass        = USB_CLASS_COMM, \
3656         .bInterfaceSubClass     = 2 /* ACM */, \
3657         .bInterfaceProtocol     = 0x0ff
3658
3659 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3660  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3661  */
3662 {
3663         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3664                           | USB_DEVICE_ID_MATCH_DEVICE,
3665         .idVendor               = 0x0411,
3666         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3667         RNDIS_MASTER_INTERFACE,
3668         .driver_info            = (unsigned long) &bcm4320b_info,
3669 }, {
3670         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3671                           | USB_DEVICE_ID_MATCH_DEVICE,
3672         .idVendor               = 0x0baf,
3673         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3674         RNDIS_MASTER_INTERFACE,
3675         .driver_info            = (unsigned long) &bcm4320b_info,
3676 }, {
3677         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3678                           | USB_DEVICE_ID_MATCH_DEVICE,
3679         .idVendor               = 0x050d,
3680         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3681         RNDIS_MASTER_INTERFACE,
3682         .driver_info            = (unsigned long) &bcm4320b_info,
3683 }, {
3684         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3685                           | USB_DEVICE_ID_MATCH_DEVICE,
3686         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3687         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3688         RNDIS_MASTER_INTERFACE,
3689         .driver_info            = (unsigned long) &bcm4320b_info,
3690 }, {
3691         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3692                           | USB_DEVICE_ID_MATCH_DEVICE,
3693         .idVendor               = 0x13b1,
3694         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3695         RNDIS_MASTER_INTERFACE,
3696         .driver_info            = (unsigned long) &bcm4320b_info,
3697 }, {
3698         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3699                           | USB_DEVICE_ID_MATCH_DEVICE,
3700         .idVendor               = 0x13b1,
3701         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3702         RNDIS_MASTER_INTERFACE,
3703         .driver_info            = (unsigned long) &bcm4320b_info,
3704 }, {
3705         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3706                           | USB_DEVICE_ID_MATCH_DEVICE,
3707         .idVendor               = 0x0b05,
3708         .idProduct              = 0x1717,       /* Asus WL169gE */
3709         RNDIS_MASTER_INTERFACE,
3710         .driver_info            = (unsigned long) &bcm4320b_info,
3711 }, {
3712         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3713                           | USB_DEVICE_ID_MATCH_DEVICE,
3714         .idVendor               = 0x0a5c,
3715         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3716         RNDIS_MASTER_INTERFACE,
3717         .driver_info            = (unsigned long) &bcm4320b_info,
3718 }, {
3719         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3720                           | USB_DEVICE_ID_MATCH_DEVICE,
3721         .idVendor               = 0x1690,
3722         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3723         RNDIS_MASTER_INTERFACE,
3724         .driver_info            = (unsigned long) &bcm4320b_info,
3725 },
3726 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3727  * parameters available, hardware probably contain older firmware version with
3728  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3729  */
3730 {
3731         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3732                           | USB_DEVICE_ID_MATCH_DEVICE,
3733         .idVendor               = 0x13b1,
3734         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3735         RNDIS_MASTER_INTERFACE,
3736         .driver_info            = (unsigned long) &bcm4320a_info,
3737 }, {
3738         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3739                           | USB_DEVICE_ID_MATCH_DEVICE,
3740         .idVendor               = 0x0baf,
3741         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3742         RNDIS_MASTER_INTERFACE,
3743         .driver_info            = (unsigned long) &bcm4320a_info,
3744 }, {
3745         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3746                           | USB_DEVICE_ID_MATCH_DEVICE,
3747         .idVendor               = 0x0411,
3748         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3749         RNDIS_MASTER_INTERFACE,
3750         .driver_info            = (unsigned long) &bcm4320a_info,
3751 },
3752 /* Generic Wireless RNDIS devices that we don't have exact
3753  * idVendor/idProduct/chip yet.
3754  */
3755 {
3756         /* RNDIS is MSFT's un-official variant of CDC ACM */
3757         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3758         .driver_info = (unsigned long) &rndis_wlan_info,
3759 }, {
3760         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3761         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3762         .driver_info = (unsigned long) &rndis_wlan_info,
3763 },
3764         { },            // END
3765 };
3766 MODULE_DEVICE_TABLE(usb, products);
3767
3768 static struct usb_driver rndis_wlan_driver = {
3769         .name =         "rndis_wlan",
3770         .id_table =     products,
3771         .probe =        usbnet_probe,
3772         .disconnect =   usbnet_disconnect,
3773         .suspend =      usbnet_suspend,
3774         .resume =       usbnet_resume,
3775 };
3776
3777 module_usb_driver(rndis_wlan_driver);
3778
3779 MODULE_AUTHOR("Bjorge Dijkstra");
3780 MODULE_AUTHOR("Jussi Kivilinna");
3781 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3782 MODULE_LICENSE("GPL");
3783