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         u8 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, u8 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                                                      u32 *beacon_period)
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_period)
1374                 *beacon_period = le32_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                                                                 u8 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 (index >= RNDIS_WLAN_NUM_KEYS)
1391                 return -EINVAL;
1392
1393         if (key_len == 5)
1394                 cipher = WLAN_CIPHER_SUITE_WEP40;
1395         else if (key_len == 13)
1396                 cipher = WLAN_CIPHER_SUITE_WEP104;
1397         else
1398                 return -EINVAL;
1399
1400         memset(&ndis_key, 0, sizeof(ndis_key));
1401
1402         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1403         ndis_key.length = cpu_to_le32(key_len);
1404         ndis_key.index = cpu_to_le32(index);
1405         memcpy(&ndis_key.material, key, key_len);
1406
1407         if (index == priv->encr_tx_key_index) {
1408                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1409                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1410                                                         RNDIS_WLAN_ALG_NONE);
1411                 if (ret)
1412                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1413                                     ret);
1414         }
1415
1416         ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1417                                                         sizeof(ndis_key));
1418         if (ret != 0) {
1419                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1420                             index + 1, ret);
1421                 return ret;
1422         }
1423
1424         priv->encr_keys[index].len = key_len;
1425         priv->encr_keys[index].cipher = cipher;
1426         memcpy(&priv->encr_keys[index].material, key, key_len);
1427         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1428
1429         return 0;
1430 }
1431
1432 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1433                         u8 index, const u8 *addr, const u8 *rx_seq,
1434                         int seq_len, u32 cipher, __le32 flags)
1435 {
1436         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1437         struct ndis_80211_key ndis_key;
1438         bool is_addr_ok;
1439         int ret;
1440
1441         if (index >= RNDIS_WLAN_NUM_KEYS) {
1442                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1443                            __func__, index);
1444                 return -EINVAL;
1445         }
1446         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1447                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1448                            __func__, key_len);
1449                 return -EINVAL;
1450         }
1451         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1452                 if (!rx_seq || seq_len <= 0) {
1453                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1454                                    __func__);
1455                         return -EINVAL;
1456                 }
1457                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1458                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1459                         return -EINVAL;
1460                 }
1461         }
1462
1463         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1464                                         !is_broadcast_ether_addr(addr);
1465         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1466                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1467                            __func__, addr);
1468                 return -EINVAL;
1469         }
1470
1471         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1472                    __func__, index,
1473                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1474                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1475                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1476
1477         memset(&ndis_key, 0, sizeof(ndis_key));
1478
1479         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1480                                 sizeof(ndis_key.material) + key_len);
1481         ndis_key.length = cpu_to_le32(key_len);
1482         ndis_key.index = cpu_to_le32(index) | flags;
1483
1484         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1485                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1486                  * different order than NDIS spec, so swap the order here. */
1487                 memcpy(ndis_key.material, key, 16);
1488                 memcpy(ndis_key.material + 16, key + 24, 8);
1489                 memcpy(ndis_key.material + 24, key + 16, 8);
1490         } else
1491                 memcpy(ndis_key.material, key, key_len);
1492
1493         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1494                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1495
1496         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1497                 /* pairwise key */
1498                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1499         } else {
1500                 /* group key */
1501                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1502                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1503                 else
1504                         get_bssid(usbdev, ndis_key.bssid);
1505         }
1506
1507         ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1508                                         le32_to_cpu(ndis_key.size));
1509         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1510                    __func__, ret);
1511         if (ret != 0)
1512                 return ret;
1513
1514         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1515         priv->encr_keys[index].len = key_len;
1516         priv->encr_keys[index].cipher = cipher;
1517         memcpy(&priv->encr_keys[index].material, key, key_len);
1518         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1519                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1520         else
1521                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1522
1523         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1524                 priv->encr_tx_key_index = index;
1525
1526         return 0;
1527 }
1528
1529 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1530 {
1531         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1532         struct rndis_wlan_encr_key key;
1533
1534         if (is_wpa_key(priv, key_idx))
1535                 return 0;
1536
1537         key = priv->encr_keys[key_idx];
1538
1539         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1540
1541         if (key.len == 0)
1542                 return 0;
1543
1544         return add_wep_key(usbdev, key.material, key.len, key_idx);
1545 }
1546
1547 static void restore_keys(struct usbnet *usbdev)
1548 {
1549         int i;
1550
1551         for (i = 0; i < 4; i++)
1552                 restore_key(usbdev, i);
1553 }
1554
1555 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1556 {
1557         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1558 }
1559
1560 /* remove_key is for both wep and wpa */
1561 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1562 {
1563         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1564         struct ndis_80211_remove_key remove_key;
1565         __le32 keyindex;
1566         bool is_wpa;
1567         int ret;
1568
1569         if (index >= RNDIS_WLAN_NUM_KEYS)
1570                 return -ENOENT;
1571
1572         if (priv->encr_keys[index].len == 0)
1573                 return 0;
1574
1575         is_wpa = is_wpa_key(priv, index);
1576
1577         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1578                    __func__, index, is_wpa ? "wpa" : "wep",
1579                    priv->encr_keys[index].len);
1580
1581         clear_key(priv, index);
1582
1583         if (is_wpa) {
1584                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1585                 remove_key.index = cpu_to_le32(index);
1586                 if (bssid) {
1587                         /* pairwise key */
1588                         if (!is_broadcast_ether_addr(bssid))
1589                                 remove_key.index |=
1590                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1591                         memcpy(remove_key.bssid, bssid,
1592                                         sizeof(remove_key.bssid));
1593                 } else
1594                         memset(remove_key.bssid, 0xff,
1595                                                 sizeof(remove_key.bssid));
1596
1597                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1598                                                         sizeof(remove_key));
1599                 if (ret != 0)
1600                         return ret;
1601         } else {
1602                 keyindex = cpu_to_le32(index);
1603                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1604                                                         sizeof(keyindex));
1605                 if (ret != 0) {
1606                         netdev_warn(usbdev->net,
1607                                     "removing encryption key %d failed (%08X)\n",
1608                                     index, ret);
1609                         return ret;
1610                 }
1611         }
1612
1613         /* if it is transmit key, disable encryption */
1614         if (index == priv->encr_tx_key_index)
1615                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1616
1617         return 0;
1618 }
1619
1620 static void set_multicast_list(struct usbnet *usbdev)
1621 {
1622         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1623         struct netdev_hw_addr *ha;
1624         __le32 filter, basefilter;
1625         int ret;
1626         char *mc_addrs = NULL;
1627         int mc_count;
1628
1629         basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1630                               RNDIS_PACKET_TYPE_BROADCAST;
1631
1632         if (usbdev->net->flags & IFF_PROMISC) {
1633                 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1634                         RNDIS_PACKET_TYPE_ALL_LOCAL;
1635         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1636                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1637         }
1638
1639         if (filter != basefilter)
1640                 goto set_filter;
1641
1642         /*
1643          * mc_list should be accessed holding the lock, so copy addresses to
1644          * local buffer first.
1645          */
1646         netif_addr_lock_bh(usbdev->net);
1647         mc_count = netdev_mc_count(usbdev->net);
1648         if (mc_count > priv->multicast_size) {
1649                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1650         } else if (mc_count) {
1651                 int i = 0;
1652
1653                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1654                 if (!mc_addrs) {
1655                         netdev_warn(usbdev->net,
1656                                     "couldn't alloc %d bytes of memory\n",
1657                                     mc_count * ETH_ALEN);
1658                         netif_addr_unlock_bh(usbdev->net);
1659                         return;
1660                 }
1661
1662                 netdev_for_each_mc_addr(ha, usbdev->net)
1663                         memcpy(mc_addrs + i++ * ETH_ALEN,
1664                                ha->addr, ETH_ALEN);
1665         }
1666         netif_addr_unlock_bh(usbdev->net);
1667
1668         if (filter != basefilter)
1669                 goto set_filter;
1670
1671         if (mc_count) {
1672                 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1673                                     mc_count * ETH_ALEN);
1674                 kfree(mc_addrs);
1675                 if (ret == 0)
1676                         filter |= RNDIS_PACKET_TYPE_MULTICAST;
1677                 else
1678                         filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1679
1680                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1681                            mc_count, priv->multicast_size, ret);
1682         }
1683
1684 set_filter:
1685         ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1686                                                         sizeof(filter));
1687         if (ret < 0) {
1688                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1689                             le32_to_cpu(filter));
1690         }
1691
1692         netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1693                    le32_to_cpu(filter), ret);
1694 }
1695
1696 #ifdef DEBUG
1697 static void debug_print_pmkids(struct usbnet *usbdev,
1698                                 struct ndis_80211_pmkid *pmkids,
1699                                 const char *func_str)
1700 {
1701         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1702         int i, len, count, max_pmkids, entry_len;
1703
1704         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1705         len = le32_to_cpu(pmkids->length);
1706         count = le32_to_cpu(pmkids->bssid_info_count);
1707
1708         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1709
1710         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1711                                 "%d)\n", func_str, count, len, entry_len);
1712
1713         if (count > max_pmkids)
1714                 count = max_pmkids;
1715
1716         for (i = 0; i < count; i++) {
1717                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1718
1719                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1720                                 "pmkid: %08X:%08X:%08X:%08X\n",
1721                                 func_str, pmkids->bssid_info[i].bssid,
1722                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1723                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1724         }
1725 }
1726 #else
1727 static void debug_print_pmkids(struct usbnet *usbdev,
1728                                 struct ndis_80211_pmkid *pmkids,
1729                                 const char *func_str)
1730 {
1731         return;
1732 }
1733 #endif
1734
1735 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1736 {
1737         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1738         struct ndis_80211_pmkid *pmkids;
1739         int len, ret, max_pmkids;
1740
1741         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1742         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1743
1744         pmkids = kzalloc(len, GFP_KERNEL);
1745         if (!pmkids)
1746                 return ERR_PTR(-ENOMEM);
1747
1748         pmkids->length = cpu_to_le32(len);
1749         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1750
1751         ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1752         if (ret < 0) {
1753                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1754                                 " -> %d\n", __func__, len, max_pmkids, ret);
1755
1756                 kfree(pmkids);
1757                 return ERR_PTR(ret);
1758         }
1759
1760         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1761                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1762
1763         debug_print_pmkids(usbdev, pmkids, __func__);
1764
1765         return pmkids;
1766 }
1767
1768 static int set_device_pmkids(struct usbnet *usbdev,
1769                                 struct ndis_80211_pmkid *pmkids)
1770 {
1771         int ret, len, num_pmkids;
1772
1773         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1774         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1775         pmkids->length = cpu_to_le32(len);
1776
1777         debug_print_pmkids(usbdev, pmkids, __func__);
1778
1779         ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1780                                                 le32_to_cpu(pmkids->length));
1781         if (ret < 0) {
1782                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1783                                 "\n", __func__, len, num_pmkids, ret);
1784         }
1785
1786         kfree(pmkids);
1787         return ret;
1788 }
1789
1790 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1791                                                 struct ndis_80211_pmkid *pmkids,
1792                                                 struct cfg80211_pmksa *pmksa,
1793                                                 int max_pmkids)
1794 {
1795         int i, newlen, err;
1796         unsigned int count;
1797
1798         count = le32_to_cpu(pmkids->bssid_info_count);
1799
1800         if (count > max_pmkids)
1801                 count = max_pmkids;
1802
1803         for (i = 0; i < count; i++)
1804                 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1805                                                         pmksa->bssid))
1806                         break;
1807
1808         /* pmkid not found */
1809         if (i == count) {
1810                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1811                                         __func__, pmksa->bssid);
1812                 err = -ENOENT;
1813                 goto error;
1814         }
1815
1816         for (; i + 1 < count; i++)
1817                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1818
1819         count--;
1820         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1821
1822         pmkids->length = cpu_to_le32(newlen);
1823         pmkids->bssid_info_count = cpu_to_le32(count);
1824
1825         return pmkids;
1826 error:
1827         kfree(pmkids);
1828         return ERR_PTR(err);
1829 }
1830
1831 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1832                                                 struct ndis_80211_pmkid *pmkids,
1833                                                 struct cfg80211_pmksa *pmksa,
1834                                                 int max_pmkids)
1835 {
1836         int i, err, newlen;
1837         unsigned int count;
1838
1839         count = le32_to_cpu(pmkids->bssid_info_count);
1840
1841         if (count > max_pmkids)
1842                 count = max_pmkids;
1843
1844         /* update with new pmkid */
1845         for (i = 0; i < count; i++) {
1846                 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1847                                                         pmksa->bssid))
1848                         continue;
1849
1850                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1851                                                                 WLAN_PMKID_LEN);
1852
1853                 return pmkids;
1854         }
1855
1856         /* out of space, return error */
1857         if (i == max_pmkids) {
1858                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1859                 err = -ENOSPC;
1860                 goto error;
1861         }
1862
1863         /* add new pmkid */
1864         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1865
1866         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1867         if (!pmkids) {
1868                 err = -ENOMEM;
1869                 goto error;
1870         }
1871
1872         pmkids->length = cpu_to_le32(newlen);
1873         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1874
1875         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1876         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1877
1878         return pmkids;
1879 error:
1880         kfree(pmkids);
1881         return ERR_PTR(err);
1882 }
1883
1884 /*
1885  * cfg80211 ops
1886  */
1887 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1888                                         struct net_device *dev,
1889                                         enum nl80211_iftype type, u32 *flags,
1890                                         struct vif_params *params)
1891 {
1892         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1893         struct usbnet *usbdev = priv->usbdev;
1894         int mode;
1895
1896         switch (type) {
1897         case NL80211_IFTYPE_ADHOC:
1898                 mode = NDIS_80211_INFRA_ADHOC;
1899                 break;
1900         case NL80211_IFTYPE_STATION:
1901                 mode = NDIS_80211_INFRA_INFRA;
1902                 break;
1903         default:
1904                 return -EINVAL;
1905         }
1906
1907         priv->wdev.iftype = type;
1908
1909         return set_infra_mode(usbdev, mode);
1910 }
1911
1912 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1913 {
1914         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1915         struct usbnet *usbdev = priv->usbdev;
1916         int err;
1917
1918         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1919                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1920                 if (err < 0)
1921                         return err;
1922         }
1923
1924         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1925                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1926                 if (err < 0)
1927                         return err;
1928         }
1929
1930         return 0;
1931 }
1932
1933 static int rndis_set_tx_power(struct wiphy *wiphy,
1934                               enum nl80211_tx_power_setting type,
1935                               int mbm)
1936 {
1937         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1938         struct usbnet *usbdev = priv->usbdev;
1939
1940         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1941                    __func__, type, mbm);
1942
1943         if (mbm < 0 || (mbm % 100))
1944                 return -ENOTSUPP;
1945
1946         /* Device doesn't support changing txpower after initialization, only
1947          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1948          * currently used.
1949          */
1950         if (type == NL80211_TX_POWER_AUTOMATIC ||
1951             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1952                 if (!priv->radio_on)
1953                         disassociate(usbdev, true); /* turn on radio */
1954
1955                 return 0;
1956         }
1957
1958         return -ENOTSUPP;
1959 }
1960
1961 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1962 {
1963         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1964         struct usbnet *usbdev = priv->usbdev;
1965
1966         *dbm = get_bcm4320_power_dbm(priv);
1967
1968         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1969
1970         return 0;
1971 }
1972
1973 #define SCAN_DELAY_JIFFIES (6 * HZ)
1974 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1975                         struct cfg80211_scan_request *request)
1976 {
1977         struct usbnet *usbdev = netdev_priv(dev);
1978         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1979         int ret;
1980         int delay = SCAN_DELAY_JIFFIES;
1981
1982         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1983
1984         /* Get current bssid list from device before new scan, as new scan
1985          * clears internal bssid list.
1986          */
1987         rndis_check_bssid_list(usbdev, NULL, NULL);
1988
1989         if (!request)
1990                 return -EINVAL;
1991
1992         if (priv->scan_request && priv->scan_request != request)
1993                 return -EBUSY;
1994
1995         priv->scan_request = request;
1996
1997         ret = rndis_start_bssid_list_scan(usbdev);
1998         if (ret == 0) {
1999                 if (priv->device_type == RNDIS_BCM4320A)
2000                         delay = HZ;
2001
2002                 /* Wait before retrieving scan results from device */
2003                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
2004         }
2005
2006         return ret;
2007 }
2008
2009 static bool rndis_bss_info_update(struct usbnet *usbdev,
2010                                   struct ndis_80211_bssid_ex *bssid)
2011 {
2012         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2013         struct ieee80211_channel *channel;
2014         struct cfg80211_bss *bss;
2015         s32 signal;
2016         u64 timestamp;
2017         u16 capability;
2018         u16 beacon_interval;
2019         struct ndis_80211_fixed_ies *fixed;
2020         int ie_len, bssid_len;
2021         u8 *ie;
2022
2023         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
2024                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
2025
2026         /* parse bssid structure */
2027         bssid_len = le32_to_cpu(bssid->length);
2028
2029         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2030                         sizeof(struct ndis_80211_fixed_ies))
2031                 return NULL;
2032
2033         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2034
2035         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2036         ie_len = min(bssid_len - (int)sizeof(*bssid),
2037                                         (int)le32_to_cpu(bssid->ie_length));
2038         ie_len -= sizeof(struct ndis_80211_fixed_ies);
2039         if (ie_len < 0)
2040                 return NULL;
2041
2042         /* extract data for cfg80211_inform_bss */
2043         channel = ieee80211_get_channel(priv->wdev.wiphy,
2044                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2045         if (!channel)
2046                 return NULL;
2047
2048         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2049         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2050         capability = le16_to_cpu(fixed->capabilities);
2051         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2052
2053         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2054                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2055                 GFP_KERNEL);
2056         cfg80211_put_bss(bss);
2057
2058         return (bss != NULL);
2059 }
2060
2061 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2062                                         struct ndis_80211_bssid_ex *bssid,
2063                                         int *bssid_len, void *buf, int len)
2064 {
2065         void *buf_end, *bssid_end;
2066
2067         buf_end = (char *)buf + len;
2068         bssid_end = (char *)bssid + *bssid_len;
2069
2070         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2071                 *bssid_len = 0;
2072                 return NULL;
2073         } else {
2074                 bssid = (void *)((char *)bssid + *bssid_len);
2075                 *bssid_len = le32_to_cpu(bssid->length);
2076                 return bssid;
2077         }
2078 }
2079
2080 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2081                                   int bssid_len, void *buf, int len)
2082 {
2083         void *buf_end, *bssid_end;
2084
2085         if (!bssid || bssid_len <= 0 || bssid_len > len)
2086                 return false;
2087
2088         buf_end = (char *)buf + len;
2089         bssid_end = (char *)bssid + bssid_len;
2090
2091         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2092 }
2093
2094 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2095                                         bool *matched)
2096 {
2097         void *buf = NULL;
2098         struct ndis_80211_bssid_list_ex *bssid_list;
2099         struct ndis_80211_bssid_ex *bssid;
2100         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2101
2102         netdev_dbg(usbdev->net, "%s()\n", __func__);
2103
2104         len = CONTROL_BUFFER_SIZE;
2105 resize_buf:
2106         buf = kzalloc(len, GFP_KERNEL);
2107         if (!buf) {
2108                 ret = -ENOMEM;
2109                 goto out;
2110         }
2111
2112         /* BSSID-list might have got bigger last time we checked, keep
2113          * resizing until it won't get any bigger.
2114          */
2115         new_len = len;
2116         ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2117         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2118                 goto out;
2119
2120         if (new_len > len) {
2121                 len = new_len;
2122                 kfree(buf);
2123                 goto resize_buf;
2124         }
2125
2126         len = new_len;
2127
2128         bssid_list = buf;
2129         count = le32_to_cpu(bssid_list->num_items);
2130         real_count = 0;
2131         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2132
2133         bssid_len = 0;
2134         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2135
2136         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2137          * received 'num_items' and walking through full bssid buffer instead.
2138          */
2139         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2140                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2141                     matched) {
2142                         if (compare_ether_addr(bssid->mac, match_bssid))
2143                                 *matched = true;
2144                 }
2145
2146                 real_count++;
2147                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2148         }
2149
2150         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2151                                 " %d\n", __func__, count, real_count);
2152
2153 out:
2154         kfree(buf);
2155         return ret;
2156 }
2157
2158 static void rndis_get_scan_results(struct work_struct *work)
2159 {
2160         struct rndis_wlan_private *priv =
2161                 container_of(work, struct rndis_wlan_private, scan_work.work);
2162         struct usbnet *usbdev = priv->usbdev;
2163         int ret;
2164
2165         netdev_dbg(usbdev->net, "get_scan_results\n");
2166
2167         if (!priv->scan_request)
2168                 return;
2169
2170         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2171
2172         cfg80211_scan_done(priv->scan_request, ret < 0);
2173
2174         priv->scan_request = NULL;
2175 }
2176
2177 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2178                                         struct cfg80211_connect_params *sme)
2179 {
2180         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2181         struct usbnet *usbdev = priv->usbdev;
2182         struct ieee80211_channel *channel = sme->channel;
2183         struct ndis_80211_ssid ssid;
2184         int pairwise = RNDIS_WLAN_ALG_NONE;
2185         int groupwise = RNDIS_WLAN_ALG_NONE;
2186         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2187         int length, i, ret, chan = -1;
2188
2189         if (channel)
2190                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2191
2192         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2193         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2194                 pairwise |=
2195                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2196
2197         if (sme->crypto.n_ciphers_pairwise > 0 &&
2198                         pairwise == RNDIS_WLAN_ALG_NONE) {
2199                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2200                 return -ENOTSUPP;
2201         }
2202
2203         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2204                 keymgmt |=
2205                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2206
2207         if (sme->crypto.n_akm_suites > 0 &&
2208                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2209                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2210                 return -ENOTSUPP;
2211         }
2212
2213         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2214                    sme->ssid, sme->bssid, chan,
2215                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2216                    groupwise, pairwise, keymgmt);
2217
2218         if (is_associated(usbdev))
2219                 disassociate(usbdev, false);
2220
2221         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2222         if (ret < 0) {
2223                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2224                            ret);
2225                 goto err_turn_radio_on;
2226         }
2227
2228         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2229                                                                 keymgmt);
2230         if (ret < 0) {
2231                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2232                            ret);
2233                 goto err_turn_radio_on;
2234         }
2235
2236         set_priv_filter(usbdev);
2237
2238         ret = set_encr_mode(usbdev, pairwise, groupwise);
2239         if (ret < 0) {
2240                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2241                            ret);
2242                 goto err_turn_radio_on;
2243         }
2244
2245         if (channel) {
2246                 ret = set_channel(usbdev, chan);
2247                 if (ret < 0) {
2248                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2249                                    ret);
2250                         goto err_turn_radio_on;
2251                 }
2252         }
2253
2254         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2255                 priv->encr_tx_key_index = sme->key_idx;
2256                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2257                 if (ret < 0) {
2258                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2259                                    ret, sme->key_len, sme->key_idx);
2260                         goto err_turn_radio_on;
2261                 }
2262         }
2263
2264         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2265                                 !is_broadcast_ether_addr(sme->bssid)) {
2266                 ret = set_bssid(usbdev, sme->bssid);
2267                 if (ret < 0) {
2268                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2269                                    ret);
2270                         goto err_turn_radio_on;
2271                 }
2272         } else
2273                 clear_bssid(usbdev);
2274
2275         length = sme->ssid_len;
2276         if (length > NDIS_802_11_LENGTH_SSID)
2277                 length = NDIS_802_11_LENGTH_SSID;
2278
2279         memset(&ssid, 0, sizeof(ssid));
2280         ssid.length = cpu_to_le32(length);
2281         memcpy(ssid.essid, sme->ssid, length);
2282
2283         /* Pause and purge rx queue, so we don't pass packets before
2284          * 'media connect'-indication.
2285          */
2286         usbnet_pause_rx(usbdev);
2287         usbnet_purge_paused_rxq(usbdev);
2288
2289         ret = set_essid(usbdev, &ssid);
2290         if (ret < 0)
2291                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2292         return ret;
2293
2294 err_turn_radio_on:
2295         disassociate(usbdev, true);
2296
2297         return ret;
2298 }
2299
2300 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2301                                                                 u16 reason_code)
2302 {
2303         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2304         struct usbnet *usbdev = priv->usbdev;
2305
2306         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2307
2308         priv->connected = false;
2309         memset(priv->bssid, 0, ETH_ALEN);
2310
2311         return deauthenticate(usbdev);
2312 }
2313
2314 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2315                                         struct cfg80211_ibss_params *params)
2316 {
2317         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2318         struct usbnet *usbdev = priv->usbdev;
2319         struct ieee80211_channel *channel = params->channel;
2320         struct ndis_80211_ssid ssid;
2321         enum nl80211_auth_type auth_type;
2322         int ret, alg, length, chan = -1;
2323
2324         if (channel)
2325                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2326
2327         /* TODO: How to handle ad-hoc encryption?
2328          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2329          * pre-shared for encryption (open/shared/wpa), is key set before
2330          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2331          */
2332         if (params->privacy) {
2333                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2334                 alg = RNDIS_WLAN_ALG_WEP;
2335         } else {
2336                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2337                 alg = RNDIS_WLAN_ALG_NONE;
2338         }
2339
2340         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2341                    params->ssid, params->bssid, chan, params->privacy);
2342
2343         if (is_associated(usbdev))
2344                 disassociate(usbdev, false);
2345
2346         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2347         if (ret < 0) {
2348                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2349                            ret);
2350                 goto err_turn_radio_on;
2351         }
2352
2353         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2354         if (ret < 0) {
2355                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2356                            ret);
2357                 goto err_turn_radio_on;
2358         }
2359
2360         set_priv_filter(usbdev);
2361
2362         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2363         if (ret < 0) {
2364                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2365                            ret);
2366                 goto err_turn_radio_on;
2367         }
2368
2369         if (channel) {
2370                 ret = set_channel(usbdev, chan);
2371                 if (ret < 0) {
2372                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2373                                    ret);
2374                         goto err_turn_radio_on;
2375                 }
2376         }
2377
2378         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2379                                 !is_broadcast_ether_addr(params->bssid)) {
2380                 ret = set_bssid(usbdev, params->bssid);
2381                 if (ret < 0) {
2382                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2383                                    ret);
2384                         goto err_turn_radio_on;
2385                 }
2386         } else
2387                 clear_bssid(usbdev);
2388
2389         length = params->ssid_len;
2390         if (length > NDIS_802_11_LENGTH_SSID)
2391                 length = NDIS_802_11_LENGTH_SSID;
2392
2393         memset(&ssid, 0, sizeof(ssid));
2394         ssid.length = cpu_to_le32(length);
2395         memcpy(ssid.essid, params->ssid, length);
2396
2397         /* Don't need to pause rx queue for ad-hoc. */
2398         usbnet_purge_paused_rxq(usbdev);
2399         usbnet_resume_rx(usbdev);
2400
2401         ret = set_essid(usbdev, &ssid);
2402         if (ret < 0)
2403                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2404                            ret);
2405         return ret;
2406
2407 err_turn_radio_on:
2408         disassociate(usbdev, true);
2409
2410         return ret;
2411 }
2412
2413 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2414 {
2415         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2416         struct usbnet *usbdev = priv->usbdev;
2417
2418         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2419
2420         priv->connected = false;
2421         memset(priv->bssid, 0, ETH_ALEN);
2422
2423         return deauthenticate(usbdev);
2424 }
2425
2426 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2427         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2428 {
2429         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2430         struct usbnet *usbdev = priv->usbdev;
2431
2432         return set_channel(usbdev,
2433                         ieee80211_frequency_to_channel(chan->center_freq));
2434 }
2435
2436 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2437                          u8 key_index, bool pairwise, const u8 *mac_addr,
2438                          struct key_params *params)
2439 {
2440         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2441         struct usbnet *usbdev = priv->usbdev;
2442         __le32 flags;
2443
2444         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2445                    __func__, key_index, mac_addr, params->cipher);
2446
2447         switch (params->cipher) {
2448         case WLAN_CIPHER_SUITE_WEP40:
2449         case WLAN_CIPHER_SUITE_WEP104:
2450                 return add_wep_key(usbdev, params->key, params->key_len,
2451                                                                 key_index);
2452         case WLAN_CIPHER_SUITE_TKIP:
2453         case WLAN_CIPHER_SUITE_CCMP:
2454                 flags = 0;
2455
2456                 if (params->seq && params->seq_len > 0)
2457                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2458                 if (mac_addr)
2459                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2460                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2461
2462                 return add_wpa_key(usbdev, params->key, params->key_len,
2463                                 key_index, mac_addr, params->seq,
2464                                 params->seq_len, params->cipher, flags);
2465         default:
2466                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2467                            __func__, params->cipher);
2468                 return -ENOTSUPP;
2469         }
2470 }
2471
2472 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2473                          u8 key_index, bool pairwise, const u8 *mac_addr)
2474 {
2475         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2476         struct usbnet *usbdev = priv->usbdev;
2477
2478         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2479
2480         return remove_key(usbdev, key_index, mac_addr);
2481 }
2482
2483 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2484                                  u8 key_index, bool unicast, bool multicast)
2485 {
2486         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2487         struct usbnet *usbdev = priv->usbdev;
2488         struct rndis_wlan_encr_key key;
2489
2490         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2491
2492         if (key_index >= RNDIS_WLAN_NUM_KEYS)
2493                 return -ENOENT;
2494
2495         priv->encr_tx_key_index = key_index;
2496
2497         if (is_wpa_key(priv, key_index))
2498                 return 0;
2499
2500         key = priv->encr_keys[key_index];
2501
2502         return add_wep_key(usbdev, key.material, key.len, key_index);
2503 }
2504
2505 static void rndis_fill_station_info(struct usbnet *usbdev,
2506                                                 struct station_info *sinfo)
2507 {
2508         __le32 linkspeed, rssi;
2509         int ret, len;
2510
2511         memset(sinfo, 0, sizeof(*sinfo));
2512
2513         len = sizeof(linkspeed);
2514         ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2515         if (ret == 0) {
2516                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2517                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2518         }
2519
2520         len = sizeof(rssi);
2521         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2522         if (ret == 0) {
2523                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2524                 sinfo->filled |= STATION_INFO_SIGNAL;
2525         }
2526 }
2527
2528 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2529                                         u8 *mac, struct station_info *sinfo)
2530 {
2531         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2532         struct usbnet *usbdev = priv->usbdev;
2533
2534         if (compare_ether_addr(priv->bssid, mac))
2535                 return -ENOENT;
2536
2537         rndis_fill_station_info(usbdev, sinfo);
2538
2539         return 0;
2540 }
2541
2542 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2543                                int idx, u8 *mac, struct station_info *sinfo)
2544 {
2545         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2546         struct usbnet *usbdev = priv->usbdev;
2547
2548         if (idx != 0)
2549                 return -ENOENT;
2550
2551         memcpy(mac, priv->bssid, ETH_ALEN);
2552
2553         rndis_fill_station_info(usbdev, sinfo);
2554
2555         return 0;
2556 }
2557
2558 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2559                                 struct cfg80211_pmksa *pmksa)
2560 {
2561         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2562         struct usbnet *usbdev = priv->usbdev;
2563         struct ndis_80211_pmkid *pmkids;
2564         u32 *tmp = (u32 *)pmksa->pmkid;
2565
2566         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2567                         pmksa->bssid,
2568                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2569                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2570
2571         pmkids = get_device_pmkids(usbdev);
2572         if (IS_ERR(pmkids)) {
2573                 /* couldn't read PMKID cache from device */
2574                 return PTR_ERR(pmkids);
2575         }
2576
2577         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2578         if (IS_ERR(pmkids)) {
2579                 /* not found, list full, etc */
2580                 return PTR_ERR(pmkids);
2581         }
2582
2583         return set_device_pmkids(usbdev, pmkids);
2584 }
2585
2586 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2587                                 struct cfg80211_pmksa *pmksa)
2588 {
2589         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2590         struct usbnet *usbdev = priv->usbdev;
2591         struct ndis_80211_pmkid *pmkids;
2592         u32 *tmp = (u32 *)pmksa->pmkid;
2593
2594         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2595                         pmksa->bssid,
2596                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2597                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2598
2599         pmkids = get_device_pmkids(usbdev);
2600         if (IS_ERR(pmkids)) {
2601                 /* Couldn't read PMKID cache from device */
2602                 return PTR_ERR(pmkids);
2603         }
2604
2605         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2606         if (IS_ERR(pmkids)) {
2607                 /* not found, etc */
2608                 return PTR_ERR(pmkids);
2609         }
2610
2611         return set_device_pmkids(usbdev, pmkids);
2612 }
2613
2614 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2615 {
2616         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2617         struct usbnet *usbdev = priv->usbdev;
2618         struct ndis_80211_pmkid pmkid;
2619
2620         netdev_dbg(usbdev->net, "%s()\n", __func__);
2621
2622         memset(&pmkid, 0, sizeof(pmkid));
2623
2624         pmkid.length = cpu_to_le32(sizeof(pmkid));
2625         pmkid.bssid_info_count = cpu_to_le32(0);
2626
2627         return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2628 }
2629
2630 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2631                                 bool enabled, int timeout)
2632 {
2633         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2634         struct usbnet *usbdev = priv->usbdev;
2635         int power_mode;
2636         __le32 mode;
2637         int ret;
2638
2639         if (priv->device_type != RNDIS_BCM4320B)
2640                 return -ENOTSUPP;
2641
2642         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2643                                 enabled ? "enabled" : "disabled",
2644                                 timeout);
2645
2646         if (enabled)
2647                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2648         else
2649                 power_mode = NDIS_80211_POWER_MODE_CAM;
2650
2651         if (power_mode == priv->power_mode)
2652                 return 0;
2653
2654         priv->power_mode = power_mode;
2655
2656         mode = cpu_to_le32(power_mode);
2657         ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2658
2659         netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2660                                 __func__, ret);
2661
2662         return ret;
2663 }
2664
2665 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2666                                         struct net_device *dev,
2667                                         s32 rssi_thold, u32 rssi_hyst)
2668 {
2669         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2670
2671         priv->cqm_rssi_thold = rssi_thold;
2672         priv->cqm_rssi_hyst = rssi_hyst;
2673         priv->last_cqm_event_rssi = 0;
2674
2675         return 0;
2676 }
2677
2678 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2679                                            struct ndis_80211_assoc_info *info)
2680 {
2681         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2682         struct ieee80211_channel *channel;
2683         struct ndis_80211_ssid ssid;
2684         struct cfg80211_bss *bss;
2685         s32 signal;
2686         u64 timestamp;
2687         u16 capability;
2688         u32 beacon_period = 0;
2689         __le32 rssi;
2690         u8 ie_buf[34];
2691         int len, ret, ie_len;
2692
2693         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2694         len = sizeof(rssi);
2695         rssi = 0;
2696         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2697         signal = level_to_qual(le32_to_cpu(rssi));
2698
2699         netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2700                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2701                    level_to_qual(le32_to_cpu(rssi)));
2702
2703         /* Get AP capabilities */
2704         if (info) {
2705                 capability = le16_to_cpu(info->resp_ie.capa);
2706         } else {
2707                 /* Set atleast ESS/IBSS capability */
2708                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2709                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2710         }
2711
2712         /* Get channel and beacon interval */
2713         channel = get_current_channel(usbdev, &beacon_period);
2714         if (!channel) {
2715                 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2716                                         __func__);
2717                 return;
2718         }
2719
2720         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2721         len = sizeof(ssid);
2722         memset(&ssid, 0, sizeof(ssid));
2723         ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2724         netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2725                                 "'%.32s'\n", __func__, ret,
2726                                 le32_to_cpu(ssid.length), ssid.essid);
2727
2728         if (le32_to_cpu(ssid.length) > 32)
2729                 ssid.length = cpu_to_le32(32);
2730
2731         ie_buf[0] = WLAN_EID_SSID;
2732         ie_buf[1] = le32_to_cpu(ssid.length);
2733         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2734
2735         ie_len = le32_to_cpu(ssid.length) + 2;
2736
2737         /* no tsf */
2738         timestamp = 0;
2739
2740         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2741                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2742                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2743                 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2744                 ssid.essid, signal);
2745
2746         bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2747                 timestamp, capability, beacon_period, ie_buf, ie_len,
2748                 signal, GFP_KERNEL);
2749         cfg80211_put_bss(bss);
2750 }
2751
2752 /*
2753  * workers, indication handlers, device poller
2754  */
2755 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2756 {
2757         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2758         struct ndis_80211_assoc_info *info = NULL;
2759         u8 bssid[ETH_ALEN];
2760         unsigned int resp_ie_len, req_ie_len;
2761         unsigned int offset;
2762         u8 *req_ie, *resp_ie;
2763         int ret;
2764         bool roamed = false;
2765         bool match_bss;
2766
2767         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2768                 /* received media connect indication while connected, either
2769                  * device reassociated with same AP or roamed to new. */
2770                 roamed = true;
2771         }
2772
2773         req_ie_len = 0;
2774         resp_ie_len = 0;
2775         req_ie = NULL;
2776         resp_ie = NULL;
2777
2778         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2779                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2780                 if (!info) {
2781                         /* No memory? Try resume work later */
2782                         set_bit(WORK_LINK_UP, &priv->work_pending);
2783                         queue_work(priv->workqueue, &priv->work);
2784                         return;
2785                 }
2786
2787                 /* Get association info IEs from device. */
2788                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2789                 if (!ret) {
2790                         req_ie_len = le32_to_cpu(info->req_ie_length);
2791                         if (req_ie_len > CONTROL_BUFFER_SIZE)
2792                                 req_ie_len = CONTROL_BUFFER_SIZE;
2793                         if (req_ie_len != 0) {
2794                                 offset = le32_to_cpu(info->offset_req_ies);
2795
2796                                 if (offset > CONTROL_BUFFER_SIZE)
2797                                         offset = CONTROL_BUFFER_SIZE;
2798
2799                                 req_ie = (u8 *)info + offset;
2800
2801                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2802                                         req_ie_len =
2803                                                 CONTROL_BUFFER_SIZE - offset;
2804                         }
2805
2806                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2807                         if (resp_ie_len > CONTROL_BUFFER_SIZE)
2808                                 resp_ie_len = CONTROL_BUFFER_SIZE;
2809                         if (resp_ie_len != 0) {
2810                                 offset = le32_to_cpu(info->offset_resp_ies);
2811
2812                                 if (offset > CONTROL_BUFFER_SIZE)
2813                                         offset = CONTROL_BUFFER_SIZE;
2814
2815                                 resp_ie = (u8 *)info + offset;
2816
2817                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2818                                         resp_ie_len =
2819                                                 CONTROL_BUFFER_SIZE - offset;
2820                         }
2821                 } else {
2822                         /* Since rndis_wlan_craft_connected_bss() might use info
2823                          * later and expects info to contain valid data if
2824                          * non-null, free info and set NULL here.
2825                          */
2826                         kfree(info);
2827                         info = NULL;
2828                 }
2829         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2830                 return;
2831
2832         ret = get_bssid(usbdev, bssid);
2833         if (ret < 0)
2834                 memset(bssid, 0, sizeof(bssid));
2835
2836         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2837                    bssid, roamed ? " roamed" : "");
2838
2839         /* Internal bss list in device should contain at least the currently
2840          * connected bss and we can get it to cfg80211 with
2841          * rndis_check_bssid_list().
2842          *
2843          * NDIS spec says: "If the device is associated, but the associated
2844          *  BSSID is not in its BSSID scan list, then the driver must add an
2845          *  entry for the BSSID at the end of the data that it returns in
2846          *  response to query of OID_802_11_BSSID_LIST."
2847          *
2848          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2849          */
2850         match_bss = false;
2851         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2852
2853         if (!is_zero_ether_addr(bssid) && !match_bss) {
2854                 /* Couldn't get bss from device, we need to manually craft bss
2855                  * for cfg80211.
2856                  */
2857                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2858         }
2859
2860         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2861                 if (!roamed)
2862                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2863                                                 req_ie_len, resp_ie,
2864                                                 resp_ie_len, 0, GFP_KERNEL);
2865                 else
2866                         cfg80211_roamed(usbdev->net,
2867                                         get_current_channel(usbdev, NULL),
2868                                         bssid, req_ie, req_ie_len,
2869                                         resp_ie, resp_ie_len, GFP_KERNEL);
2870         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2871                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2872
2873         if (info != NULL)
2874                 kfree(info);
2875
2876         priv->connected = true;
2877         memcpy(priv->bssid, bssid, ETH_ALEN);
2878
2879         usbnet_resume_rx(usbdev);
2880         netif_carrier_on(usbdev->net);
2881 }
2882
2883 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2884 {
2885         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2886
2887         if (priv->connected) {
2888                 priv->connected = false;
2889                 memset(priv->bssid, 0, ETH_ALEN);
2890
2891                 deauthenticate(usbdev);
2892
2893                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2894         }
2895
2896         netif_carrier_off(usbdev->net);
2897 }
2898
2899 static void rndis_wlan_worker(struct work_struct *work)
2900 {
2901         struct rndis_wlan_private *priv =
2902                 container_of(work, struct rndis_wlan_private, work);
2903         struct usbnet *usbdev = priv->usbdev;
2904
2905         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2906                 rndis_wlan_do_link_up_work(usbdev);
2907
2908         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2909                 rndis_wlan_do_link_down_work(usbdev);
2910
2911         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2912                 set_multicast_list(usbdev);
2913 }
2914
2915 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2916 {
2917         struct usbnet *usbdev = netdev_priv(dev);
2918         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2919
2920         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2921                 return;
2922
2923         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2924         queue_work(priv->workqueue, &priv->work);
2925 }
2926
2927 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2928                                 struct ndis_80211_status_indication *indication,
2929                                 int len)
2930 {
2931         u8 *buf;
2932         const char *type;
2933         int flags, buflen, key_id;
2934         bool pairwise_error, group_error;
2935         struct ndis_80211_auth_request *auth_req;
2936         enum nl80211_key_type key_type;
2937
2938         /* must have at least one array entry */
2939         if (len < offsetof(struct ndis_80211_status_indication, u) +
2940                                 sizeof(struct ndis_80211_auth_request)) {
2941                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2942                             len);
2943                 return;
2944         }
2945
2946         buf = (void *)&indication->u.auth_request[0];
2947         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2948
2949         while (buflen >= sizeof(*auth_req)) {
2950                 auth_req = (void *)buf;
2951                 type = "unknown";
2952                 flags = le32_to_cpu(auth_req->flags);
2953                 pairwise_error = false;
2954                 group_error = false;
2955
2956                 if (flags & 0x1)
2957                         type = "reauth request";
2958                 if (flags & 0x2)
2959                         type = "key update request";
2960                 if (flags & 0x6) {
2961                         pairwise_error = true;
2962                         type = "pairwise_error";
2963                 }
2964                 if (flags & 0xe) {
2965                         group_error = true;
2966                         type = "group_error";
2967                 }
2968
2969                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2970                             type, le32_to_cpu(auth_req->flags));
2971
2972                 if (pairwise_error) {
2973                         key_type = NL80211_KEYTYPE_PAIRWISE;
2974                         key_id = -1;
2975
2976                         cfg80211_michael_mic_failure(usbdev->net,
2977                                                         auth_req->bssid,
2978                                                         key_type, key_id, NULL,
2979                                                         GFP_KERNEL);
2980                 }
2981
2982                 if (group_error) {
2983                         key_type = NL80211_KEYTYPE_GROUP;
2984                         key_id = -1;
2985
2986                         cfg80211_michael_mic_failure(usbdev->net,
2987                                                         auth_req->bssid,
2988                                                         key_type, key_id, NULL,
2989                                                         GFP_KERNEL);
2990                 }
2991
2992                 buflen -= le32_to_cpu(auth_req->length);
2993                 buf += le32_to_cpu(auth_req->length);
2994         }
2995 }
2996
2997 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2998                                 struct ndis_80211_status_indication *indication,
2999                                 int len)
3000 {
3001         struct ndis_80211_pmkid_cand_list *cand_list;
3002         int list_len, expected_len, i;
3003
3004         if (len < offsetof(struct ndis_80211_status_indication, u) +
3005                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
3006                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
3007                             len);
3008                 return;
3009         }
3010
3011         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
3012                         sizeof(struct ndis_80211_pmkid_candidate);
3013         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
3014                         offsetof(struct ndis_80211_status_indication, u);
3015
3016         if (len < expected_len) {
3017                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
3018                             len, expected_len);
3019                 return;
3020         }
3021
3022         cand_list = &indication->u.cand_list;
3023
3024         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
3025                     le32_to_cpu(cand_list->version),
3026                     le32_to_cpu(cand_list->num_candidates));
3027
3028         if (le32_to_cpu(cand_list->version) != 1)
3029                 return;
3030
3031         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3032                 struct ndis_80211_pmkid_candidate *cand =
3033                                                 &cand_list->candidate_list[i];
3034                 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3035
3036                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3037                            i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3038
3039                 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3040                                                 preauth, GFP_ATOMIC);
3041         }
3042 }
3043
3044 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3045                         struct rndis_indicate *msg, int buflen)
3046 {
3047         struct ndis_80211_status_indication *indication;
3048         unsigned int len, offset;
3049
3050         offset = offsetof(struct rndis_indicate, status) +
3051                         le32_to_cpu(msg->offset);
3052         len = le32_to_cpu(msg->length);
3053
3054         if (len < 8) {
3055                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3056                             len);
3057                 return;
3058         }
3059
3060         if (len > buflen || offset > buflen || offset + len > buflen) {
3061                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3062                             offset + len, buflen);
3063                 return;
3064         }
3065
3066         indication = (void *)((u8 *)msg + offset);
3067
3068         switch (le32_to_cpu(indication->status_type)) {
3069         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3070                 netdev_info(usbdev->net, "radio state indication: %i\n",
3071                             le32_to_cpu(indication->u.radio_status));
3072                 return;
3073
3074         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3075                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3076                             le32_to_cpu(indication->u.media_stream_mode));
3077                 return;
3078
3079         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3080                 rndis_wlan_auth_indication(usbdev, indication, len);
3081                 return;
3082
3083         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3084                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3085                 return;
3086
3087         default:
3088                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3089                             le32_to_cpu(indication->status_type));
3090         }
3091 }
3092
3093 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3094 {
3095         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3096         struct rndis_indicate *msg = ind;
3097
3098         switch (msg->status) {
3099         case RNDIS_STATUS_MEDIA_CONNECT:
3100                 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3101                         /* OID_802_11_ADD_KEY causes sometimes extra
3102                          * "media connect" indications which confuses driver
3103                          * and userspace to think that device is
3104                          * roaming/reassociating when it isn't.
3105                          */
3106                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3107                         return;
3108                 }
3109
3110                 usbnet_pause_rx(usbdev);
3111
3112                 netdev_info(usbdev->net, "media connect\n");
3113
3114                 /* queue work to avoid recursive calls into rndis_command */
3115                 set_bit(WORK_LINK_UP, &priv->work_pending);
3116                 queue_work(priv->workqueue, &priv->work);
3117                 break;
3118
3119         case RNDIS_STATUS_MEDIA_DISCONNECT:
3120                 netdev_info(usbdev->net, "media disconnect\n");
3121
3122                 /* queue work to avoid recursive calls into rndis_command */
3123                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3124                 queue_work(priv->workqueue, &priv->work);
3125                 break;
3126
3127         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3128                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3129                 break;
3130
3131         default:
3132                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3133                             le32_to_cpu(msg->status));
3134                 break;
3135         }
3136 }
3137
3138 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3139 {
3140         struct {
3141                 __le32  num_items;
3142                 __le32  items[8];
3143         } networks_supported;
3144         struct ndis_80211_capability *caps;
3145         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3146         int len, retval, i, n;
3147         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3148
3149         /* determine supported modes */
3150         len = sizeof(networks_supported);
3151         retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3152                                                 &networks_supported, &len);
3153         if (retval >= 0) {
3154                 n = le32_to_cpu(networks_supported.num_items);
3155                 if (n > 8)
3156                         n = 8;
3157                 for (i = 0; i < n; i++) {
3158                         switch (le32_to_cpu(networks_supported.items[i])) {
3159                         case NDIS_80211_TYPE_FREQ_HOP:
3160                         case NDIS_80211_TYPE_DIRECT_SEQ:
3161                                 priv->caps |= CAP_MODE_80211B;
3162                                 break;
3163                         case NDIS_80211_TYPE_OFDM_A:
3164                                 priv->caps |= CAP_MODE_80211A;
3165                                 break;
3166                         case NDIS_80211_TYPE_OFDM_G:
3167                                 priv->caps |= CAP_MODE_80211G;
3168                                 break;
3169                         }
3170                 }
3171         }
3172
3173         /* get device 802.11 capabilities, number of PMKIDs */
3174         caps = (struct ndis_80211_capability *)caps_buf;
3175         len = sizeof(caps_buf);
3176         retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3177         if (retval >= 0) {
3178                 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3179                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3180                                 le32_to_cpu(caps->length),
3181                                 le32_to_cpu(caps->version),
3182                                 le32_to_cpu(caps->num_pmkids),
3183                                 le32_to_cpu(caps->num_auth_encr_pair));
3184                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3185         } else
3186                 wiphy->max_num_pmkids = 0;
3187
3188         return retval;
3189 }
3190
3191 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3192 {
3193         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3194         enum nl80211_cqm_rssi_threshold_event event;
3195         int thold, hyst, last_event;
3196
3197         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3198                 return;
3199         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3200                 return;
3201
3202         last_event = priv->last_cqm_event_rssi;
3203         thold = priv->cqm_rssi_thold;
3204         hyst = priv->cqm_rssi_hyst;
3205
3206         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3207                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3208         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3209                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3210         else
3211                 return;
3212
3213         priv->last_cqm_event_rssi = rssi;
3214         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3215 }
3216
3217 #define DEVICE_POLLER_JIFFIES (HZ)
3218 static void rndis_device_poller(struct work_struct *work)
3219 {
3220         struct rndis_wlan_private *priv =
3221                 container_of(work, struct rndis_wlan_private,
3222                                                         dev_poller_work.work);
3223         struct usbnet *usbdev = priv->usbdev;
3224         __le32 rssi, tmp;
3225         int len, ret, j;
3226         int update_jiffies = DEVICE_POLLER_JIFFIES;
3227         void *buf;
3228
3229         /* Only check/do workaround when connected. Calling is_associated()
3230          * also polls device with rndis_command() and catches for media link
3231          * indications.
3232          */
3233         if (!is_associated(usbdev)) {
3234                 /* Workaround bad scanning in BCM4320a devices with active
3235                  * background scanning when not associated.
3236                  */
3237                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3238                     !priv->scan_request) {
3239                         /* Get previous scan results */
3240                         rndis_check_bssid_list(usbdev, NULL, NULL);
3241
3242                         /* Initiate new scan */
3243                         rndis_start_bssid_list_scan(usbdev);
3244                 }
3245
3246                 goto end;
3247         }
3248
3249         len = sizeof(rssi);
3250         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3251         if (ret == 0) {
3252                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3253                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3254         }
3255
3256         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3257                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3258
3259         /* Workaround transfer stalls on poor quality links.
3260          * TODO: find right way to fix these stalls (as stalls do not happen
3261          * with ndiswrapper/windows driver). */
3262         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3263                 /* Decrease stats worker interval to catch stalls.
3264                  * faster. Faster than 400-500ms causes packet loss,
3265                  * Slower doesn't catch stalls fast enough.
3266                  */
3267                 j = msecs_to_jiffies(priv->param_workaround_interval);
3268                 if (j > DEVICE_POLLER_JIFFIES)
3269                         j = DEVICE_POLLER_JIFFIES;
3270                 else if (j <= 0)
3271                         j = 1;
3272                 update_jiffies = j;
3273
3274                 /* Send scan OID. Use of both OIDs is required to get device
3275                  * working.
3276                  */
3277                 tmp = cpu_to_le32(1);
3278                 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3279                                                                 sizeof(tmp));
3280
3281                 len = CONTROL_BUFFER_SIZE;
3282                 buf = kmalloc(len, GFP_KERNEL);
3283                 if (!buf)
3284                         goto end;
3285
3286                 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3287                 kfree(buf);
3288         }
3289
3290 end:
3291         if (update_jiffies >= HZ)
3292                 update_jiffies = round_jiffies_relative(update_jiffies);
3293         else {
3294                 j = round_jiffies_relative(update_jiffies);
3295                 if (abs(j - update_jiffies) <= 10)
3296                         update_jiffies = j;
3297         }
3298
3299         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3300                                                                 update_jiffies);
3301 }
3302
3303 /*
3304  * driver/device initialization
3305  */
3306 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3307 {
3308         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3309
3310         priv->device_type = device_type;
3311
3312         priv->param_country[0] = modparam_country[0];
3313         priv->param_country[1] = modparam_country[1];
3314         priv->param_country[2] = 0;
3315         priv->param_frameburst   = modparam_frameburst;
3316         priv->param_afterburner  = modparam_afterburner;
3317         priv->param_power_save   = modparam_power_save;
3318         priv->param_power_output = modparam_power_output;
3319         priv->param_roamtrigger  = modparam_roamtrigger;
3320         priv->param_roamdelta    = modparam_roamdelta;
3321
3322         priv->param_country[0] = toupper(priv->param_country[0]);
3323         priv->param_country[1] = toupper(priv->param_country[1]);
3324         /* doesn't support EU as country code, use FI instead */
3325         if (!strcmp(priv->param_country, "EU"))
3326                 strcpy(priv->param_country, "FI");
3327
3328         if (priv->param_power_save < 0)
3329                 priv->param_power_save = 0;
3330         else if (priv->param_power_save > 2)
3331                 priv->param_power_save = 2;
3332
3333         if (priv->param_power_output < 0)
3334                 priv->param_power_output = 0;
3335         else if (priv->param_power_output > 3)
3336                 priv->param_power_output = 3;
3337
3338         if (priv->param_roamtrigger < -80)
3339                 priv->param_roamtrigger = -80;
3340         else if (priv->param_roamtrigger > -60)
3341                 priv->param_roamtrigger = -60;
3342
3343         if (priv->param_roamdelta < 0)
3344                 priv->param_roamdelta = 0;
3345         else if (priv->param_roamdelta > 2)
3346                 priv->param_roamdelta = 2;
3347
3348         if (modparam_workaround_interval < 0)
3349                 priv->param_workaround_interval = 500;
3350         else
3351                 priv->param_workaround_interval = modparam_workaround_interval;
3352 }
3353
3354 static int unknown_early_init(struct usbnet *usbdev)
3355 {
3356         /* copy module parameters for unknown so that iwconfig reports txpower
3357          * and workaround parameter is copied to private structure correctly.
3358          */
3359         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3360
3361         /* This is unknown device, so do not try set configuration parameters.
3362          */
3363
3364         return 0;
3365 }
3366
3367 static int bcm4320a_early_init(struct usbnet *usbdev)
3368 {
3369         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3370          * and workaround parameter is copied to private structure correctly.
3371          */
3372         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3373
3374         /* bcm4320a doesn't handle configuration parameters well. Try
3375          * set any and you get partially zeroed mac and broken device.
3376          */
3377
3378         return 0;
3379 }
3380
3381 static int bcm4320b_early_init(struct usbnet *usbdev)
3382 {
3383         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3384         char buf[8];
3385
3386         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3387
3388         /* Early initialization settings, setting these won't have effect
3389          * if called after generic_rndis_bind().
3390          */
3391
3392         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3393         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3394                                         priv->param_frameburst ? "1" : "0");
3395         rndis_set_config_parameter_str(usbdev, "Afterburner",
3396                                         priv->param_afterburner ? "1" : "0");
3397         sprintf(buf, "%d", priv->param_power_save);
3398         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3399         sprintf(buf, "%d", priv->param_power_output);
3400         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3401         sprintf(buf, "%d", priv->param_roamtrigger);
3402         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3403         sprintf(buf, "%d", priv->param_roamdelta);
3404         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3405
3406         return 0;
3407 }
3408
3409 /* same as rndis_netdev_ops but with local multicast handler */
3410 static const struct net_device_ops rndis_wlan_netdev_ops = {
3411         .ndo_open               = usbnet_open,
3412         .ndo_stop               = usbnet_stop,
3413         .ndo_start_xmit         = usbnet_start_xmit,
3414         .ndo_tx_timeout         = usbnet_tx_timeout,
3415         .ndo_set_mac_address    = eth_mac_addr,
3416         .ndo_validate_addr      = eth_validate_addr,
3417         .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3418 };
3419
3420 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3421 {
3422         struct wiphy *wiphy;
3423         struct rndis_wlan_private *priv;
3424         int retval, len;
3425         __le32 tmp;
3426
3427         /* allocate wiphy and rndis private data
3428          * NOTE: We only support a single virtual interface, so wiphy
3429          * and wireless_dev are somewhat synonymous for this device.
3430          */
3431         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3432         if (!wiphy)
3433                 return -ENOMEM;
3434
3435         priv = wiphy_priv(wiphy);
3436         usbdev->net->ieee80211_ptr = &priv->wdev;
3437         priv->wdev.wiphy = wiphy;
3438         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3439
3440         /* These have to be initialized before calling generic_rndis_bind().
3441          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3442          */
3443         usbdev->driver_priv = priv;
3444         priv->usbdev = usbdev;
3445
3446         mutex_init(&priv->command_lock);
3447
3448         /* because rndis_command() sleeps we need to use workqueue */
3449         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3450         INIT_WORK(&priv->work, rndis_wlan_worker);
3451         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3452         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3453
3454         /* try bind rndis_host */
3455         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3456         if (retval < 0)
3457                 goto fail;
3458
3459         /* generic_rndis_bind set packet filter to multicast_all+
3460          * promisc mode which doesn't work well for our devices (device
3461          * picks up rssi to closest station instead of to access point).
3462          *
3463          * rndis_host wants to avoid all OID as much as possible
3464          * so do promisc/multicast handling in rndis_wlan.
3465          */
3466         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3467
3468         tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3469         retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3470                                                                 sizeof(tmp));
3471
3472         len = sizeof(tmp);
3473         retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3474                                                                 &len);
3475         priv->multicast_size = le32_to_cpu(tmp);
3476         if (retval < 0 || priv->multicast_size < 0)
3477                 priv->multicast_size = 0;
3478         if (priv->multicast_size > 0)
3479                 usbdev->net->flags |= IFF_MULTICAST;
3480         else
3481                 usbdev->net->flags &= ~IFF_MULTICAST;
3482
3483         /* fill-out wiphy structure and register w/ cfg80211 */
3484         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3485         wiphy->privid = rndis_wiphy_privid;
3486         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3487                                         | BIT(NL80211_IFTYPE_ADHOC);
3488         wiphy->max_scan_ssids = 1;
3489
3490         /* TODO: fill-out band/encr information based on priv->caps */
3491         rndis_wlan_get_caps(usbdev, wiphy);
3492
3493         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3494         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3495         priv->band.channels = priv->channels;
3496         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3497         priv->band.bitrates = priv->rates;
3498         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3499         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3500         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3501
3502         memcpy(priv->cipher_suites, rndis_cipher_suites,
3503                                                 sizeof(rndis_cipher_suites));
3504         wiphy->cipher_suites = priv->cipher_suites;
3505         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3506
3507         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3508
3509         if (wiphy_register(wiphy)) {
3510                 retval = -ENODEV;
3511                 goto fail;
3512         }
3513
3514         set_default_iw_params(usbdev);
3515
3516         priv->power_mode = -1;
3517
3518         /* set default rts/frag */
3519         rndis_set_wiphy_params(wiphy,
3520                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3521
3522         /* turn radio off on init */
3523         priv->radio_on = false;
3524         disassociate(usbdev, false);
3525         netif_carrier_off(usbdev->net);
3526
3527         return 0;
3528
3529 fail:
3530         cancel_delayed_work_sync(&priv->dev_poller_work);
3531         cancel_delayed_work_sync(&priv->scan_work);
3532         cancel_work_sync(&priv->work);
3533         flush_workqueue(priv->workqueue);
3534         destroy_workqueue(priv->workqueue);
3535
3536         wiphy_free(wiphy);
3537         return retval;
3538 }
3539
3540 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3541 {
3542         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3543
3544         /* turn radio off */
3545         disassociate(usbdev, false);
3546
3547         cancel_delayed_work_sync(&priv->dev_poller_work);
3548         cancel_delayed_work_sync(&priv->scan_work);
3549         cancel_work_sync(&priv->work);
3550         flush_workqueue(priv->workqueue);
3551         destroy_workqueue(priv->workqueue);
3552
3553         rndis_unbind(usbdev, intf);
3554
3555         wiphy_unregister(priv->wdev.wiphy);
3556         wiphy_free(priv->wdev.wiphy);
3557 }
3558
3559 static int rndis_wlan_reset(struct usbnet *usbdev)
3560 {
3561         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3562         int retval;
3563
3564         netdev_dbg(usbdev->net, "%s()\n", __func__);
3565
3566         retval = rndis_reset(usbdev);
3567         if (retval)
3568                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3569
3570         /* rndis_reset cleared multicast list, so restore here.
3571            (set_multicast_list() also turns on current packet filter) */
3572         set_multicast_list(usbdev);
3573
3574         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3575                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3576
3577         return deauthenticate(usbdev);
3578 }
3579
3580 static int rndis_wlan_stop(struct usbnet *usbdev)
3581 {
3582         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3583         int retval;
3584         __le32 filter;
3585
3586         netdev_dbg(usbdev->net, "%s()\n", __func__);
3587
3588         retval = disassociate(usbdev, false);
3589
3590         priv->work_pending = 0;
3591         cancel_delayed_work_sync(&priv->dev_poller_work);
3592         cancel_delayed_work_sync(&priv->scan_work);
3593         cancel_work_sync(&priv->work);
3594         flush_workqueue(priv->workqueue);
3595
3596         if (priv->scan_request) {
3597                 cfg80211_scan_done(priv->scan_request, true);
3598                 priv->scan_request = NULL;
3599         }
3600
3601         /* Set current packet filter zero to block receiving data packets from
3602            device. */
3603         filter = 0;
3604         rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3605                                                                 sizeof(filter));
3606
3607         return retval;
3608 }
3609
3610 static const struct driver_info bcm4320b_info = {
3611         .description =  "Wireless RNDIS device, BCM4320b based",
3612         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3613                                 FLAG_AVOID_UNLINK_URBS,
3614         .bind =         rndis_wlan_bind,
3615         .unbind =       rndis_wlan_unbind,
3616         .status =       rndis_status,
3617         .rx_fixup =     rndis_rx_fixup,
3618         .tx_fixup =     rndis_tx_fixup,
3619         .reset =        rndis_wlan_reset,
3620         .stop =         rndis_wlan_stop,
3621         .early_init =   bcm4320b_early_init,
3622         .indication =   rndis_wlan_indication,
3623 };
3624
3625 static const struct driver_info bcm4320a_info = {
3626         .description =  "Wireless RNDIS device, BCM4320a based",
3627         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3628                                 FLAG_AVOID_UNLINK_URBS,
3629         .bind =         rndis_wlan_bind,
3630         .unbind =       rndis_wlan_unbind,
3631         .status =       rndis_status,
3632         .rx_fixup =     rndis_rx_fixup,
3633         .tx_fixup =     rndis_tx_fixup,
3634         .reset =        rndis_wlan_reset,
3635         .stop =         rndis_wlan_stop,
3636         .early_init =   bcm4320a_early_init,
3637         .indication =   rndis_wlan_indication,
3638 };
3639
3640 static const struct driver_info rndis_wlan_info = {
3641         .description =  "Wireless RNDIS device",
3642         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3643                                 FLAG_AVOID_UNLINK_URBS,
3644         .bind =         rndis_wlan_bind,
3645         .unbind =       rndis_wlan_unbind,
3646         .status =       rndis_status,
3647         .rx_fixup =     rndis_rx_fixup,
3648         .tx_fixup =     rndis_tx_fixup,
3649         .reset =        rndis_wlan_reset,
3650         .stop =         rndis_wlan_stop,
3651         .early_init =   unknown_early_init,
3652         .indication =   rndis_wlan_indication,
3653 };
3654
3655 /*-------------------------------------------------------------------------*/
3656
3657 static const struct usb_device_id products [] = {
3658 #define RNDIS_MASTER_INTERFACE \
3659         .bInterfaceClass        = USB_CLASS_COMM, \
3660         .bInterfaceSubClass     = 2 /* ACM */, \
3661         .bInterfaceProtocol     = 0x0ff
3662
3663 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3664  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3665  */
3666 {
3667         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3668                           | USB_DEVICE_ID_MATCH_DEVICE,
3669         .idVendor               = 0x0411,
3670         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3671         RNDIS_MASTER_INTERFACE,
3672         .driver_info            = (unsigned long) &bcm4320b_info,
3673 }, {
3674         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3675                           | USB_DEVICE_ID_MATCH_DEVICE,
3676         .idVendor               = 0x0baf,
3677         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3678         RNDIS_MASTER_INTERFACE,
3679         .driver_info            = (unsigned long) &bcm4320b_info,
3680 }, {
3681         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3682                           | USB_DEVICE_ID_MATCH_DEVICE,
3683         .idVendor               = 0x050d,
3684         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3685         RNDIS_MASTER_INTERFACE,
3686         .driver_info            = (unsigned long) &bcm4320b_info,
3687 }, {
3688         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3689                           | USB_DEVICE_ID_MATCH_DEVICE,
3690         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3691         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3692         RNDIS_MASTER_INTERFACE,
3693         .driver_info            = (unsigned long) &bcm4320b_info,
3694 }, {
3695         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3696                           | USB_DEVICE_ID_MATCH_DEVICE,
3697         .idVendor               = 0x13b1,
3698         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3699         RNDIS_MASTER_INTERFACE,
3700         .driver_info            = (unsigned long) &bcm4320b_info,
3701 }, {
3702         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3703                           | USB_DEVICE_ID_MATCH_DEVICE,
3704         .idVendor               = 0x13b1,
3705         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3706         RNDIS_MASTER_INTERFACE,
3707         .driver_info            = (unsigned long) &bcm4320b_info,
3708 }, {
3709         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3710                           | USB_DEVICE_ID_MATCH_DEVICE,
3711         .idVendor               = 0x0b05,
3712         .idProduct              = 0x1717,       /* Asus WL169gE */
3713         RNDIS_MASTER_INTERFACE,
3714         .driver_info            = (unsigned long) &bcm4320b_info,
3715 }, {
3716         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3717                           | USB_DEVICE_ID_MATCH_DEVICE,
3718         .idVendor               = 0x0a5c,
3719         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3720         RNDIS_MASTER_INTERFACE,
3721         .driver_info            = (unsigned long) &bcm4320b_info,
3722 }, {
3723         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3724                           | USB_DEVICE_ID_MATCH_DEVICE,
3725         .idVendor               = 0x1690,
3726         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3727         RNDIS_MASTER_INTERFACE,
3728         .driver_info            = (unsigned long) &bcm4320b_info,
3729 },
3730 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3731  * parameters available, hardware probably contain older firmware version with
3732  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3733  */
3734 {
3735         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3736                           | USB_DEVICE_ID_MATCH_DEVICE,
3737         .idVendor               = 0x13b1,
3738         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3739         RNDIS_MASTER_INTERFACE,
3740         .driver_info            = (unsigned long) &bcm4320a_info,
3741 }, {
3742         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3743                           | USB_DEVICE_ID_MATCH_DEVICE,
3744         .idVendor               = 0x0baf,
3745         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3746         RNDIS_MASTER_INTERFACE,
3747         .driver_info            = (unsigned long) &bcm4320a_info,
3748 }, {
3749         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3750                           | USB_DEVICE_ID_MATCH_DEVICE,
3751         .idVendor               = 0x0411,
3752         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3753         RNDIS_MASTER_INTERFACE,
3754         .driver_info            = (unsigned long) &bcm4320a_info,
3755 },
3756 /* Generic Wireless RNDIS devices that we don't have exact
3757  * idVendor/idProduct/chip yet.
3758  */
3759 {
3760         /* RNDIS is MSFT's un-official variant of CDC ACM */
3761         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3762         .driver_info = (unsigned long) &rndis_wlan_info,
3763 }, {
3764         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3765         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3766         .driver_info = (unsigned long) &rndis_wlan_info,
3767 },
3768         { },            // END
3769 };
3770 MODULE_DEVICE_TABLE(usb, products);
3771
3772 static struct usb_driver rndis_wlan_driver = {
3773         .name =         "rndis_wlan",
3774         .id_table =     products,
3775         .probe =        usbnet_probe,
3776         .disconnect =   usbnet_disconnect,
3777         .suspend =      usbnet_suspend,
3778         .resume =       usbnet_resume,
3779 };
3780
3781 module_usb_driver(rndis_wlan_driver);
3782
3783 MODULE_AUTHOR("Bjorge Dijkstra");
3784 MODULE_AUTHOR("Jussi Kivilinna");
3785 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3786 MODULE_LICENSE("GPL");
3787