drivers/net/wireless/rndis_wlan.c

   1 /*
   2  * Driver for RNDIS based wireless USB devices.
   3  *
   4  * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
   5  * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  *
  21  *  Portions of this file are based on NDISwrapper project,
  22  *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
  23  *  http://ndiswrapper.sourceforge.net/
  24  */
  25
  26 // #define      DEBUG                   // error path messages, extra info
  27 // #define      VERBOSE                 // more; success messages
  28
  29 #include <linux/module.h>
  30 #include <linux/init.h>
  31 #include <linux/netdevice.h>
  32 #include <linux/etherdevice.h>
  33 #include <linux/ethtool.h>
  34 #include <linux/workqueue.h>
  35 #include <linux/mutex.h>
  36 #include <linux/mii.h>
  37 #include <linux/usb.h>
  38 #include <linux/usb/cdc.h>
  39 #include <linux/wireless.h>
  40 #include <linux/ieee80211.h>
  41 #include <linux/if_arp.h>
  42 #include <linux/ctype.h>
  43 #include <linux/spinlock.h>
  44 #include <linux/slab.h>
  45 #include <net/iw_handler.h>
  46 #include <net/cfg80211.h>
  47 #include <linux/usb/usbnet.h>
  48 #include <linux/usb/rndis_host.h>
  49
  50
  51 /* NOTE: All these are settings for Broadcom chipset */
  52 static char modparam_country[4] = "EU";
  53 module_param_string(country, modparam_country, 4, 0444);
  54 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  55
  56 static int modparam_frameburst = 1;
  57 module_param_named(frameburst, modparam_frameburst, int, 0444);
  58 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  59
  60 static int modparam_afterburner = 0;
  61 module_param_named(afterburner, modparam_afterburner, int, 0444);
  62 MODULE_PARM_DESC(afterburner,
  63         "enable afterburner aka '125 High Speed Mode' (default: off)");
  64
  65 static int modparam_power_save = 0;
  66 module_param_named(power_save, modparam_power_save, int, 0444);
  67 MODULE_PARM_DESC(power_save,
  68         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
  69
  70 static int modparam_power_output = 3;
  71 module_param_named(power_output, modparam_power_output, int, 0444);
  72 MODULE_PARM_DESC(power_output,
  73         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  74
  75 static int modparam_roamtrigger = -70;
  76 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  77 MODULE_PARM_DESC(roamtrigger,
  78         "set roaming dBm trigger: -80=optimize for distance, "
  79                                 "-60=bandwidth (default: -70)");
  80
  81 static int modparam_roamdelta = 1;
  82 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  83 MODULE_PARM_DESC(roamdelta,
  84         "set roaming tendency: 0=aggressive, 1=moderate, "
  85                                 "2=conservative (default: moderate)");
  86
  87 static int modparam_workaround_interval;
  88 module_param_named(workaround_interval, modparam_workaround_interval,
  89                                                         int, 0444);
  90 MODULE_PARM_DESC(workaround_interval,
  91         "set stall workaround interval in msecs (0=disabled) (default: 0)");
  92
  93
  94 /* various RNDIS OID defs */
  95 #define OID_GEN_LINK_SPEED                      cpu_to_le32(0x00010107)
  96 #define OID_GEN_RNDIS_CONFIG_PARAMETER          cpu_to_le32(0x0001021b)
  97
  98 #define OID_GEN_XMIT_OK                         cpu_to_le32(0x00020101)
  99 #define OID_GEN_RCV_OK                          cpu_to_le32(0x00020102)
 100 #define OID_GEN_XMIT_ERROR                      cpu_to_le32(0x00020103)
 101 #define OID_GEN_RCV_ERROR                       cpu_to_le32(0x00020104)
 102 #define OID_GEN_RCV_NO_BUFFER                   cpu_to_le32(0x00020105)
 103
 104 #define OID_802_3_CURRENT_ADDRESS               cpu_to_le32(0x01010102)
 105 #define OID_802_3_MULTICAST_LIST                cpu_to_le32(0x01010103)
 106 #define OID_802_3_MAXIMUM_LIST_SIZE             cpu_to_le32(0x01010104)
 107
 108 #define OID_802_11_BSSID                        cpu_to_le32(0x0d010101)
 109 #define OID_802_11_SSID                         cpu_to_le32(0x0d010102)
 110 #define OID_802_11_INFRASTRUCTURE_MODE          cpu_to_le32(0x0d010108)
 111 #define OID_802_11_ADD_WEP                      cpu_to_le32(0x0d010113)
 112 #define OID_802_11_REMOVE_WEP                   cpu_to_le32(0x0d010114)
 113 #define OID_802_11_DISASSOCIATE                 cpu_to_le32(0x0d010115)
 114 #define OID_802_11_AUTHENTICATION_MODE          cpu_to_le32(0x0d010118)
 115 #define OID_802_11_PRIVACY_FILTER               cpu_to_le32(0x0d010119)
 116 #define OID_802_11_BSSID_LIST_SCAN              cpu_to_le32(0x0d01011a)
 117 #define OID_802_11_ENCRYPTION_STATUS            cpu_to_le32(0x0d01011b)
 118 #define OID_802_11_ADD_KEY                      cpu_to_le32(0x0d01011d)
 119 #define OID_802_11_REMOVE_KEY                   cpu_to_le32(0x0d01011e)
 120 #define OID_802_11_ASSOCIATION_INFORMATION      cpu_to_le32(0x0d01011f)
 121 #define OID_802_11_CAPABILITY                   cpu_to_le32(0x0d010122)
 122 #define OID_802_11_PMKID                        cpu_to_le32(0x0d010123)
 123 #define OID_802_11_NETWORK_TYPES_SUPPORTED      cpu_to_le32(0x0d010203)
 124 #define OID_802_11_NETWORK_TYPE_IN_USE          cpu_to_le32(0x0d010204)
 125 #define OID_802_11_TX_POWER_LEVEL               cpu_to_le32(0x0d010205)
 126 #define OID_802_11_RSSI                         cpu_to_le32(0x0d010206)
 127 #define OID_802_11_RSSI_TRIGGER                 cpu_to_le32(0x0d010207)
 128 #define OID_802_11_FRAGMENTATION_THRESHOLD      cpu_to_le32(0x0d010209)
 129 #define OID_802_11_RTS_THRESHOLD                cpu_to_le32(0x0d01020a)
 130 #define OID_802_11_SUPPORTED_RATES              cpu_to_le32(0x0d01020e)
 131 #define OID_802_11_CONFIGURATION                cpu_to_le32(0x0d010211)
 132 #define OID_802_11_BSSID_LIST                   cpu_to_le32(0x0d010217)
 133
 134
 135 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
 136 #define WL_NOISE        -96     /* typical noise level in dBm */
 137 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
 138
 139
 140 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
 141  * based on wireless rndis) has default txpower of 13dBm.
 142  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
 143  *  100% : 20 mW ~ 13dBm
 144  *   75% : 15 mW ~ 12dBm
 145  *   50% : 10 mW ~ 10dBm
 146  *   25% :  5 mW ~  7dBm
 147  */
 148 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
 149 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
 150 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
 151 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
 152
 153
 154 /* codes for "status" field of completion messages */
 155 #define RNDIS_STATUS_ADAPTER_NOT_READY          cpu_to_le32(0xc0010011)
 156 #define RNDIS_STATUS_ADAPTER_NOT_OPEN           cpu_to_le32(0xc0010012)
 157
 158
 159 /* Known device types */
 160 #define RNDIS_UNKNOWN   0
 161 #define RNDIS_BCM4320A  1
 162 #define RNDIS_BCM4320B  2
 163
 164
 165 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 166  * slightly modified for datatype endianess, etc
 167  */
 168 #define NDIS_802_11_LENGTH_SSID 32
 169 #define NDIS_802_11_LENGTH_RATES 8
 170 #define NDIS_802_11_LENGTH_RATES_EX 16
 171
 172 enum ndis_80211_net_type {
 173         NDIS_80211_TYPE_FREQ_HOP,
 174         NDIS_80211_TYPE_DIRECT_SEQ,
 175         NDIS_80211_TYPE_OFDM_A,
 176         NDIS_80211_TYPE_OFDM_G
 177 };
 178
 179 enum ndis_80211_net_infra {
 180         NDIS_80211_INFRA_ADHOC,
 181         NDIS_80211_INFRA_INFRA,
 182         NDIS_80211_INFRA_AUTO_UNKNOWN
 183 };
 184
 185 enum ndis_80211_auth_mode {
 186         NDIS_80211_AUTH_OPEN,
 187         NDIS_80211_AUTH_SHARED,
 188         NDIS_80211_AUTH_AUTO_SWITCH,
 189         NDIS_80211_AUTH_WPA,
 190         NDIS_80211_AUTH_WPA_PSK,
 191         NDIS_80211_AUTH_WPA_NONE,
 192         NDIS_80211_AUTH_WPA2,
 193         NDIS_80211_AUTH_WPA2_PSK
 194 };
 195
 196 enum ndis_80211_encr_status {
 197         NDIS_80211_ENCR_WEP_ENABLED,
 198         NDIS_80211_ENCR_DISABLED,
 199         NDIS_80211_ENCR_WEP_KEY_ABSENT,
 200         NDIS_80211_ENCR_NOT_SUPPORTED,
 201         NDIS_80211_ENCR_TKIP_ENABLED,
 202         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 203         NDIS_80211_ENCR_CCMP_ENABLED,
 204         NDIS_80211_ENCR_CCMP_KEY_ABSENT
 205 };
 206
 207 enum ndis_80211_priv_filter {
 208         NDIS_80211_PRIV_ACCEPT_ALL,
 209         NDIS_80211_PRIV_8021X_WEP
 210 };
 211
 212 enum ndis_80211_status_type {
 213         NDIS_80211_STATUSTYPE_AUTHENTICATION,
 214         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 215         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 216         NDIS_80211_STATUSTYPE_RADIOSTATE,
 217 };
 218
 219 enum ndis_80211_media_stream_mode {
 220         NDIS_80211_MEDIA_STREAM_OFF,
 221         NDIS_80211_MEDIA_STREAM_ON
 222 };
 223
 224 enum ndis_80211_radio_status {
 225         NDIS_80211_RADIO_STATUS_ON,
 226         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 227         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 228 };
 229
 230 enum ndis_80211_addkey_bits {
 231         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 232         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 233         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 234         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 235 };
 236
 237 enum ndis_80211_addwep_bits {
 238         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 239         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 240 };
 241
 242 struct ndis_80211_auth_request {
 243         __le32 length;
 244         u8 bssid[6];
 245         u8 padding[2];
 246         __le32 flags;
 247 } __packed;
 248
 249 struct ndis_80211_pmkid_candidate {
 250         u8 bssid[6];
 251         u8 padding[2];
 252         __le32 flags;
 253 } __packed;
 254
 255 struct ndis_80211_pmkid_cand_list {
 256         __le32 version;
 257         __le32 num_candidates;
 258         struct ndis_80211_pmkid_candidate candidate_list[0];
 259 } __packed;
 260
 261 struct ndis_80211_status_indication {
 262         __le32 status_type;
 263         union {
 264                 __le32                                  media_stream_mode;
 265                 __le32                                  radio_status;
 266                 struct ndis_80211_auth_request          auth_request[0];
 267                 struct ndis_80211_pmkid_cand_list       cand_list;
 268         } u;
 269 } __packed;
 270
 271 struct ndis_80211_ssid {
 272         __le32 length;
 273         u8 essid[NDIS_802_11_LENGTH_SSID];
 274 } __packed;
 275
 276 struct ndis_80211_conf_freq_hop {
 277         __le32 length;
 278         __le32 hop_pattern;
 279         __le32 hop_set;
 280         __le32 dwell_time;
 281 } __packed;
 282
 283 struct ndis_80211_conf {
 284         __le32 length;
 285         __le32 beacon_period;
 286         __le32 atim_window;
 287         __le32 ds_config;
 288         struct ndis_80211_conf_freq_hop fh_config;
 289 } __packed;
 290
 291 struct ndis_80211_bssid_ex {
 292         __le32 length;
 293         u8 mac[6];
 294         u8 padding[2];
 295         struct ndis_80211_ssid ssid;
 296         __le32 privacy;
 297         __le32 rssi;
 298         __le32 net_type;
 299         struct ndis_80211_conf config;
 300         __le32 net_infra;
 301         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 302         __le32 ie_length;
 303         u8 ies[0];
 304 } __packed;
 305
 306 struct ndis_80211_bssid_list_ex {
 307         __le32 num_items;
 308         struct ndis_80211_bssid_ex bssid[0];
 309 } __packed;
 310
 311 struct ndis_80211_fixed_ies {
 312         u8 timestamp[8];
 313         __le16 beacon_interval;
 314         __le16 capabilities;
 315 } __packed;
 316
 317 struct ndis_80211_wep_key {
 318         __le32 size;
 319         __le32 index;
 320         __le32 length;
 321         u8 material[32];
 322 } __packed;
 323
 324 struct ndis_80211_key {
 325         __le32 size;
 326         __le32 index;
 327         __le32 length;
 328         u8 bssid[6];
 329         u8 padding[6];
 330         u8 rsc[8];
 331         u8 material[32];
 332 } __packed;
 333
 334 struct ndis_80211_remove_key {
 335         __le32 size;
 336         __le32 index;
 337         u8 bssid[6];
 338         u8 padding[2];
 339 } __packed;
 340
 341 struct ndis_config_param {
 342         __le32 name_offs;
 343         __le32 name_length;
 344         __le32 type;
 345         __le32 value_offs;
 346         __le32 value_length;
 347 } __packed;
 348
 349 struct ndis_80211_assoc_info {
 350         __le32 length;
 351         __le16 req_ies;
 352         struct req_ie {
 353                 __le16 capa;
 354                 __le16 listen_interval;
 355                 u8 cur_ap_address[6];
 356         } req_ie;
 357         __le32 req_ie_length;
 358         __le32 offset_req_ies;
 359         __le16 resp_ies;
 360         struct resp_ie {
 361                 __le16 capa;
 362                 __le16 status_code;
 363                 __le16 assoc_id;
 364         } resp_ie;
 365         __le32 resp_ie_length;
 366         __le32 offset_resp_ies;
 367 } __packed;
 368
 369 struct ndis_80211_auth_encr_pair {
 370         __le32 auth_mode;
 371         __le32 encr_mode;
 372 } __packed;
 373
 374 struct ndis_80211_capability {
 375         __le32 length;
 376         __le32 version;
 377         __le32 num_pmkids;
 378         __le32 num_auth_encr_pair;
 379         struct ndis_80211_auth_encr_pair auth_encr_pair[0];
 380 } __packed;
 381
 382 struct ndis_80211_bssid_info {
 383         u8 bssid[6];
 384         u8 pmkid[16];
 385 };
 386
 387 struct ndis_80211_pmkid {
 388         __le32 length;
 389         __le32 bssid_info_count;
 390         struct ndis_80211_bssid_info bssid_info[0];
 391 };
 392
 393 /*
 394  *  private data
 395  */
 396 #define NET_TYPE_11FB   0
 397
 398 #define CAP_MODE_80211A         1
 399 #define CAP_MODE_80211B         2
 400 #define CAP_MODE_80211G         4
 401 #define CAP_MODE_MASK           7
 402
 403 #define WORK_LINK_UP            (1<<0)
 404 #define WORK_LINK_DOWN          (1<<1)
 405 #define WORK_SET_MULTICAST_LIST (1<<2)
 406
 407 #define RNDIS_WLAN_ALG_NONE     0
 408 #define RNDIS_WLAN_ALG_WEP      (1<<0)
 409 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
 410 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
 411
 412 #define RNDIS_WLAN_KEY_MGMT_NONE        0
 413 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 414 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 415
 416 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 417
 418 static const struct ieee80211_channel rndis_channels[] = {
 419         { .center_freq = 2412 },
 420         { .center_freq = 2417 },
 421         { .center_freq = 2422 },
 422         { .center_freq = 2427 },
 423         { .center_freq = 2432 },
 424         { .center_freq = 2437 },
 425         { .center_freq = 2442 },
 426         { .center_freq = 2447 },
 427         { .center_freq = 2452 },
 428         { .center_freq = 2457 },
 429         { .center_freq = 2462 },
 430         { .center_freq = 2467 },
 431         { .center_freq = 2472 },
 432         { .center_freq = 2484 },
 433 };
 434
 435 static const struct ieee80211_rate rndis_rates[] = {
 436         { .bitrate = 10 },
 437         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 438         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 439         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 440         { .bitrate = 60 },
 441         { .bitrate = 90 },
 442         { .bitrate = 120 },
 443         { .bitrate = 180 },
 444         { .bitrate = 240 },
 445         { .bitrate = 360 },
 446         { .bitrate = 480 },
 447         { .bitrate = 540 }
 448 };
 449
 450 static const u32 rndis_cipher_suites[] = {
 451         WLAN_CIPHER_SUITE_WEP40,
 452         WLAN_CIPHER_SUITE_WEP104,
 453         WLAN_CIPHER_SUITE_TKIP,
 454         WLAN_CIPHER_SUITE_CCMP,
 455 };
 456
 457 struct rndis_wlan_encr_key {
 458         int len;
 459         u32 cipher;
 460         u8 material[32];
 461         u8 bssid[ETH_ALEN];
 462         bool pairwise;
 463         bool tx_key;
 464 };
 465
 466 /* RNDIS device private data */
 467 struct rndis_wlan_private {
 468         struct usbnet *usbdev;
 469
 470         struct wireless_dev wdev;
 471
 472         struct cfg80211_scan_request *scan_request;
 473
 474         struct workqueue_struct *workqueue;
 475         struct delayed_work dev_poller_work;
 476         struct delayed_work scan_work;
 477         struct work_struct work;
 478         struct mutex command_lock;
 479         unsigned long work_pending;
 480         int last_qual;
 481
 482         struct ieee80211_supported_band band;
 483         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 484         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 485         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 486
 487         int device_type;
 488         int caps;
 489         int multicast_size;
 490
 491         /* module parameters */
 492         char param_country[4];
 493         int  param_frameburst;
 494         int  param_afterburner;
 495         int  param_power_save;
 496         int  param_power_output;
 497         int  param_roamtrigger;
 498         int  param_roamdelta;
 499         u32  param_workaround_interval;
 500
 501         /* hardware state */
 502         bool radio_on;
 503         int infra_mode;
 504         bool connected;
 505         u8 bssid[ETH_ALEN];
 506         struct ndis_80211_ssid essid;
 507         __le32 current_command_oid;
 508
 509         /* encryption stuff */
 510         int  encr_tx_key_index;
 511         struct rndis_wlan_encr_key encr_keys[4];
 512         int  wpa_version;
 513
 514         u8 command_buffer[COMMAND_BUFFER_SIZE];
 515 };
 516
 517 /*
 518  * cfg80211 ops
 519  */
 520 static int rndis_change_virtual_intf(struct wiphy *wiphy,
 521                                         struct net_device *dev,
 522                                         enum nl80211_iftype type, u32 *flags,
 523                                         struct vif_params *params);
 524
 525 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
 526                         struct cfg80211_scan_request *request);
 527
 528 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 529
 530 static int rndis_set_tx_power(struct wiphy *wiphy,
 531                               enum nl80211_tx_power_setting type,
 532                               int mbm);
 533 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
 534
 535 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 536                                 struct cfg80211_connect_params *sme);
 537
 538 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 539                                 u16 reason_code);
 540
 541 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 542                                         struct cfg80211_ibss_params *params);
 543
 544 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 545
 546 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
 547         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
 548
 549 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 550                          u8 key_index, bool pairwise, const u8 *mac_addr,
 551                          struct key_params *params);
 552
 553 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 554                          u8 key_index, bool pairwise, const u8 *mac_addr);
 555
 556 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 557                                  u8 key_index, bool unicast, bool multicast);
 558
 559 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 560                                         u8 *mac, struct station_info *sinfo);
 561
 562 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 563                                int idx, u8 *mac, struct station_info *sinfo);
 564
 565 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 566                                 struct cfg80211_pmksa *pmksa);
 567
 568 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 569                                 struct cfg80211_pmksa *pmksa);
 570
 571 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 572
 573 static struct cfg80211_ops rndis_config_ops = {
 574         .change_virtual_intf = rndis_change_virtual_intf,
 575         .scan = rndis_scan,
 576         .set_wiphy_params = rndis_set_wiphy_params,
 577         .set_tx_power = rndis_set_tx_power,
 578         .get_tx_power = rndis_get_tx_power,
 579         .connect = rndis_connect,
 580         .disconnect = rndis_disconnect,
 581         .join_ibss = rndis_join_ibss,
 582         .leave_ibss = rndis_leave_ibss,
 583         .set_channel = rndis_set_channel,
 584         .add_key = rndis_add_key,
 585         .del_key = rndis_del_key,
 586         .set_default_key = rndis_set_default_key,
 587         .get_station = rndis_get_station,
 588         .dump_station = rndis_dump_station,
 589         .set_pmksa = rndis_set_pmksa,
 590         .del_pmksa = rndis_del_pmksa,
 591         .flush_pmksa = rndis_flush_pmksa,
 592 };
 593
 594 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 595
 596
 597 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 598 {
 599         return (struct rndis_wlan_private *)dev->driver_priv;
 600 }
 601
 602 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 603 {
 604         switch (priv->param_power_output) {
 605         default:
 606         case 3:
 607                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 608         case 2:
 609                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 610         case 1:
 611                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 612         case 0:
 613                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 614         }
 615 }
 616
 617 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
 618 {
 619         int cipher = priv->encr_keys[idx].cipher;
 620
 621         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 622                 cipher == WLAN_CIPHER_SUITE_TKIP);
 623 }
 624
 625 static int rndis_cipher_to_alg(u32 cipher)
 626 {
 627         switch (cipher) {
 628         default:
 629                 return RNDIS_WLAN_ALG_NONE;
 630         case WLAN_CIPHER_SUITE_WEP40:
 631         case WLAN_CIPHER_SUITE_WEP104:
 632                 return RNDIS_WLAN_ALG_WEP;
 633         case WLAN_CIPHER_SUITE_TKIP:
 634                 return RNDIS_WLAN_ALG_TKIP;
 635         case WLAN_CIPHER_SUITE_CCMP:
 636                 return RNDIS_WLAN_ALG_CCMP;
 637         }
 638 }
 639
 640 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 641 {
 642         switch (akm_suite) {
 643         default:
 644                 return RNDIS_WLAN_KEY_MGMT_NONE;
 645         case WLAN_AKM_SUITE_8021X:
 646                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 647         case WLAN_AKM_SUITE_PSK:
 648                 return RNDIS_WLAN_KEY_MGMT_PSK;
 649         }
 650 }
 651
 652 #ifdef DEBUG
 653 static const char *oid_to_string(__le32 oid)
 654 {
 655         switch (oid) {
 656 #define OID_STR(oid) case oid: return(#oid)
 657                 /* from rndis_host.h */
 658                 OID_STR(OID_802_3_PERMANENT_ADDRESS);
 659                 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
 660                 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
 661                 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
 662
 663                 /* from rndis_wlan.c */
 664                 OID_STR(OID_GEN_LINK_SPEED);
 665                 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
 666
 667                 OID_STR(OID_GEN_XMIT_OK);
 668                 OID_STR(OID_GEN_RCV_OK);
 669                 OID_STR(OID_GEN_XMIT_ERROR);
 670                 OID_STR(OID_GEN_RCV_ERROR);
 671                 OID_STR(OID_GEN_RCV_NO_BUFFER);
 672
 673                 OID_STR(OID_802_3_CURRENT_ADDRESS);
 674                 OID_STR(OID_802_3_MULTICAST_LIST);
 675                 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
 676
 677                 OID_STR(OID_802_11_BSSID);
 678                 OID_STR(OID_802_11_SSID);
 679                 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
 680                 OID_STR(OID_802_11_ADD_WEP);
 681                 OID_STR(OID_802_11_REMOVE_WEP);
 682                 OID_STR(OID_802_11_DISASSOCIATE);
 683                 OID_STR(OID_802_11_AUTHENTICATION_MODE);
 684                 OID_STR(OID_802_11_PRIVACY_FILTER);
 685                 OID_STR(OID_802_11_BSSID_LIST_SCAN);
 686                 OID_STR(OID_802_11_ENCRYPTION_STATUS);
 687                 OID_STR(OID_802_11_ADD_KEY);
 688                 OID_STR(OID_802_11_REMOVE_KEY);
 689                 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
 690                 OID_STR(OID_802_11_PMKID);
 691                 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
 692                 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
 693                 OID_STR(OID_802_11_TX_POWER_LEVEL);
 694                 OID_STR(OID_802_11_RSSI);
 695                 OID_STR(OID_802_11_RSSI_TRIGGER);
 696                 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
 697                 OID_STR(OID_802_11_RTS_THRESHOLD);
 698                 OID_STR(OID_802_11_SUPPORTED_RATES);
 699                 OID_STR(OID_802_11_CONFIGURATION);
 700                 OID_STR(OID_802_11_BSSID_LIST);
 701 #undef OID_STR
 702         }
 703
 704         return "?";
 705 }
 706 #else
 707 static const char *oid_to_string(__le32 oid)
 708 {
 709         return "?";
 710 }
 711 #endif
 712
 713 /* translate error code */
 714 static int rndis_error_status(__le32 rndis_status)
 715 {
 716         int ret = -EINVAL;
 717         switch (rndis_status) {
 718         case RNDIS_STATUS_SUCCESS:
 719                 ret = 0;
 720                 break;
 721         case RNDIS_STATUS_FAILURE:
 722         case RNDIS_STATUS_INVALID_DATA:
 723                 ret = -EINVAL;
 724                 break;
 725         case RNDIS_STATUS_NOT_SUPPORTED:
 726                 ret = -EOPNOTSUPP;
 727                 break;
 728         case RNDIS_STATUS_ADAPTER_NOT_READY:
 729         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 730                 ret = -EBUSY;
 731                 break;
 732         }
 733         return ret;
 734 }
 735
 736 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
 737 {
 738         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 739         union {
 740                 void                    *buf;
 741                 struct rndis_msg_hdr    *header;
 742                 struct rndis_query      *get;
 743                 struct rndis_query_c    *get_c;
 744         } u;
 745         int ret, buflen;
 746         int resplen, respoffs, copylen;
 747
 748         buflen = *len + sizeof(*u.get);
 749         if (buflen < CONTROL_BUFFER_SIZE)
 750                 buflen = CONTROL_BUFFER_SIZE;
 751
 752         if (buflen > COMMAND_BUFFER_SIZE) {
 753                 u.buf = kmalloc(buflen, GFP_KERNEL);
 754                 if (!u.buf)
 755                         return -ENOMEM;
 756         } else {
 757                 u.buf = priv->command_buffer;
 758         }
 759
 760         mutex_lock(&priv->command_lock);
 761
 762         memset(u.get, 0, sizeof *u.get);
 763         u.get->msg_type = RNDIS_MSG_QUERY;
 764         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 765         u.get->oid = oid;
 766
 767         priv->current_command_oid = oid;
 768         ret = rndis_command(dev, u.header, buflen);
 769         priv->current_command_oid = 0;
 770         if (ret < 0)
 771                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 772                            __func__, oid_to_string(oid), ret,
 773                            le32_to_cpu(u.get_c->status));
 774
 775         if (ret == 0) {
 776                 resplen = le32_to_cpu(u.get_c->len);
 777                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 778
 779                 if (respoffs > buflen) {
 780                         /* Device returned data offset outside buffer, error. */
 781                         netdev_dbg(dev->net, "%s(%s): received invalid "
 782                                 "data offset: %d > %d\n", __func__,
 783                                 oid_to_string(oid), respoffs, buflen);
 784
 785                         ret = -EINVAL;
 786                         goto exit_unlock;
 787                 }
 788
 789                 if ((resplen + respoffs) > buflen) {
 790                         /* Device would have returned more data if buffer would
 791                          * have been big enough. Copy just the bits that we got.
 792                          */
 793                         copylen = buflen - respoffs;
 794                 } else {
 795                         copylen = resplen;
 796                 }
 797
 798                 if (copylen > *len)
 799                         copylen = *len;
 800
 801                 memcpy(data, u.buf + respoffs, copylen);
 802
 803                 *len = resplen;
 804
 805                 ret = rndis_error_status(u.get_c->status);
 806                 if (ret < 0)
 807                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 808                                    __func__, oid_to_string(oid),
 809                                    le32_to_cpu(u.get_c->status), ret);
 810         }
 811
 812 exit_unlock:
 813         mutex_unlock(&priv->command_lock);
 814
 815         if (u.buf != priv->command_buffer)
 816                 kfree(u.buf);
 817         return ret;
 818 }
 819
 820 static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
 821                          int len)
 822 {
 823         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 824         union {
 825                 void                    *buf;
 826                 struct rndis_msg_hdr    *header;
 827                 struct rndis_set        *set;
 828                 struct rndis_set_c      *set_c;
 829         } u;
 830         int ret, buflen;
 831
 832         buflen = len + sizeof(*u.set);
 833         if (buflen < CONTROL_BUFFER_SIZE)
 834                 buflen = CONTROL_BUFFER_SIZE;
 835
 836         if (buflen > COMMAND_BUFFER_SIZE) {
 837                 u.buf = kmalloc(buflen, GFP_KERNEL);
 838                 if (!u.buf)
 839                         return -ENOMEM;
 840         } else {
 841                 u.buf = priv->command_buffer;
 842         }
 843
 844         mutex_lock(&priv->command_lock);
 845
 846         memset(u.set, 0, sizeof *u.set);
 847         u.set->msg_type = RNDIS_MSG_SET;
 848         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 849         u.set->oid = oid;
 850         u.set->len = cpu_to_le32(len);
 851         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 852         u.set->handle = cpu_to_le32(0);
 853         memcpy(u.buf + sizeof(*u.set), data, len);
 854
 855         priv->current_command_oid = oid;
 856         ret = rndis_command(dev, u.header, buflen);
 857         priv->current_command_oid = 0;
 858         if (ret < 0)
 859                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 860                            __func__, oid_to_string(oid), ret,
 861                            le32_to_cpu(u.set_c->status));
 862
 863         if (ret == 0) {
 864                 ret = rndis_error_status(u.set_c->status);
 865
 866                 if (ret < 0)
 867                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 868                                    __func__, oid_to_string(oid),
 869                                    le32_to_cpu(u.set_c->status), ret);
 870         }
 871
 872         mutex_unlock(&priv->command_lock);
 873
 874         if (u.buf != priv->command_buffer)
 875                 kfree(u.buf);
 876         return ret;
 877 }
 878
 879 static int rndis_reset(struct usbnet *usbdev)
 880 {
 881         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 882         struct rndis_reset *reset;
 883         int ret;
 884
 885         mutex_lock(&priv->command_lock);
 886
 887         reset = (void *)priv->command_buffer;
 888         memset(reset, 0, sizeof(*reset));
 889         reset->msg_type = RNDIS_MSG_RESET;
 890         reset->msg_len = cpu_to_le32(sizeof(*reset));
 891         priv->current_command_oid = 0;
 892         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 893
 894         mutex_unlock(&priv->command_lock);
 895
 896         if (ret < 0)
 897                 return ret;
 898         return 0;
 899 }
 900
 901 /*
 902  * Specs say that we can only set config parameters only soon after device
 903  * initialization.
 904  *   value_type: 0 = u32, 2 = unicode string
 905  */
 906 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 907                                                 int value_type, void *value)
 908 {
 909         struct ndis_config_param *infobuf;
 910         int value_len, info_len, param_len, ret, i;
 911         __le16 *unibuf;
 912         __le32 *dst_value;
 913
 914         if (value_type == 0)
 915                 value_len = sizeof(__le32);
 916         else if (value_type == 2)
 917                 value_len = strlen(value) * sizeof(__le16);
 918         else
 919                 return -EINVAL;
 920
 921         param_len = strlen(param) * sizeof(__le16);
 922         info_len = sizeof(*infobuf) + param_len + value_len;
 923
 924 #ifdef DEBUG
 925         info_len += 12;
 926 #endif
 927         infobuf = kmalloc(info_len, GFP_KERNEL);
 928         if (!infobuf)
 929                 return -ENOMEM;
 930
 931 #ifdef DEBUG
 932         info_len -= 12;
 933         /* extra 12 bytes are for padding (debug output) */
 934         memset(infobuf, 0xCC, info_len + 12);
 935 #endif
 936
 937         if (value_type == 2)
 938                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 939                            param, (u8 *)value);
 940         else
 941                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 942                            param, *(u32 *)value);
 943
 944         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 945         infobuf->name_length = cpu_to_le32(param_len);
 946         infobuf->type = cpu_to_le32(value_type);
 947         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 948         infobuf->value_length = cpu_to_le32(value_len);
 949
 950         /* simple string to unicode string conversion */
 951         unibuf = (void *)infobuf + sizeof(*infobuf);
 952         for (i = 0; i < param_len / sizeof(__le16); i++)
 953                 unibuf[i] = cpu_to_le16(param[i]);
 954
 955         if (value_type == 2) {
 956                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 957                 for (i = 0; i < value_len / sizeof(__le16); i++)
 958                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 959         } else {
 960                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 961                 *dst_value = cpu_to_le32(*(u32 *)value);
 962         }
 963
 964 #ifdef DEBUG
 965         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 966         for (i = 0; i < info_len; i += 12) {
 967                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 968                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 969                            cpu_to_be32(tmp[0]),
 970                            cpu_to_be32(tmp[1]),
 971                            cpu_to_be32(tmp[2]));
 972         }
 973 #endif
 974
 975         ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
 976                                                         infobuf, info_len);
 977         if (ret != 0)
 978                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 979                            ret);
 980
 981         kfree(infobuf);
 982         return ret;
 983 }
 984
 985 static int rndis_set_config_parameter_str(struct usbnet *dev,
 986                                                 char *param, char *value)
 987 {
 988         return rndis_set_config_parameter(dev, param, 2, value);
 989 }
 990
 991 /*
 992  * data conversion functions
 993  */
 994 static int level_to_qual(int level)
 995 {
 996         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 997         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 998 }
 999
1000 /*
1001  * common functions
1002  */
1003 static int set_infra_mode(struct usbnet *usbdev, int mode);
1004 static void restore_keys(struct usbnet *usbdev);
1005 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1006                                         bool *matched);
1007
1008 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1009 {
1010         __le32 tmp;
1011
1012         /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1013         tmp = cpu_to_le32(1);
1014         return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1015                                                         sizeof(tmp));
1016 }
1017
1018 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1019 {
1020         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1021         int ret;
1022
1023         ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1024         if (ret < 0) {
1025                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1026                 return ret;
1027         }
1028         if (ret == 0) {
1029                 memcpy(&priv->essid, ssid, sizeof(priv->essid));
1030                 priv->radio_on = true;
1031                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1032         }
1033
1034         return ret;
1035 }
1036
1037 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1038 {
1039         int ret;
1040
1041         ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1042         if (ret < 0) {
1043                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1044                             bssid, ret);
1045                 return ret;
1046         }
1047
1048         return ret;
1049 }
1050
1051 static int clear_bssid(struct usbnet *usbdev)
1052 {
1053         static const u8 broadcast_mac[ETH_ALEN] = {
1054                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1055         };
1056
1057         return set_bssid(usbdev, broadcast_mac);
1058 }
1059
1060 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1061 {
1062         int ret, len;
1063
1064         len = ETH_ALEN;
1065         ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1066
1067         if (ret != 0)
1068                 memset(bssid, 0, ETH_ALEN);
1069
1070         return ret;
1071 }
1072
1073 static int get_association_info(struct usbnet *usbdev,
1074                         struct ndis_80211_assoc_info *info, int len)
1075 {
1076         return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1077                                 info, &len);
1078 }
1079
1080 static bool is_associated(struct usbnet *usbdev)
1081 {
1082         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1083         u8 bssid[ETH_ALEN];
1084         int ret;
1085
1086         if (!priv->radio_on)
1087                 return false;
1088
1089         ret = get_bssid(usbdev, bssid);
1090
1091         return (ret == 0 && !is_zero_ether_addr(bssid));
1092 }
1093
1094 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1095 {
1096         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1097         struct ndis_80211_ssid ssid;
1098         int i, ret = 0;
1099
1100         if (priv->radio_on) {
1101                 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1102                 if (ret == 0) {
1103                         priv->radio_on = false;
1104                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1105                                    __func__);
1106
1107                         if (reset_ssid)
1108                                 msleep(100);
1109                 }
1110         }
1111
1112         /* disassociate causes radio to be turned off; if reset_ssid
1113          * is given, set random ssid to enable radio */
1114         if (reset_ssid) {
1115                 /* Set device to infrastructure mode so we don't get ad-hoc
1116                  * 'media connect' indications with the random ssid.
1117                  */
1118                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1119
1120                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1121                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1122                 ssid.essid[0] = 0x1;
1123                 ssid.essid[1] = 0xff;
1124                 for (i = 2; i < sizeof(ssid.essid); i++)
1125                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1126                 ret = set_essid(usbdev, &ssid);
1127         }
1128         return ret;
1129 }
1130
1131 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1132                                 enum nl80211_auth_type auth_type, int keymgmt)
1133 {
1134         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1135         __le32 tmp;
1136         int auth_mode, ret;
1137
1138         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1139                    __func__, wpa_version, auth_type, keymgmt);
1140
1141         if (wpa_version & NL80211_WPA_VERSION_2) {
1142                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1143                         auth_mode = NDIS_80211_AUTH_WPA2;
1144                 else
1145                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1146         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1147                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1148                         auth_mode = NDIS_80211_AUTH_WPA;
1149                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1150                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1151                 else
1152                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1153         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1154                 auth_mode = NDIS_80211_AUTH_SHARED;
1155         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1156                 auth_mode = NDIS_80211_AUTH_OPEN;
1157         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1158                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1159         else
1160                 return -ENOTSUPP;
1161
1162         tmp = cpu_to_le32(auth_mode);
1163         ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1164                                                                 sizeof(tmp));
1165         if (ret != 0) {
1166                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1167                             ret);
1168                 return ret;
1169         }
1170
1171         priv->wpa_version = wpa_version;
1172
1173         return 0;
1174 }
1175
1176 static int set_priv_filter(struct usbnet *usbdev)
1177 {
1178         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1179         __le32 tmp;
1180
1181         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1182                    __func__, priv->wpa_version);
1183
1184         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1185             priv->wpa_version & NL80211_WPA_VERSION_1)
1186                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1187         else
1188                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1189
1190         return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1191                                                                 sizeof(tmp));
1192 }
1193
1194 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1195 {
1196         __le32 tmp;
1197         int encr_mode, ret;
1198
1199         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1200                    __func__, pairwise, groupwise);
1201
1202         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1203                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1204         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1205                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1206         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1207                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1208         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1209                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1210         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1211                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1212         else
1213                 encr_mode = NDIS_80211_ENCR_DISABLED;
1214
1215         tmp = cpu_to_le32(encr_mode);
1216         ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1217                                                                 sizeof(tmp));
1218         if (ret != 0) {
1219                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1220                             ret);
1221                 return ret;
1222         }
1223
1224         return 0;
1225 }
1226
1227 static int set_infra_mode(struct usbnet *usbdev, int mode)
1228 {
1229         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1230         __le32 tmp;
1231         int ret;
1232
1233         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1234                    __func__, priv->infra_mode);
1235
1236         tmp = cpu_to_le32(mode);
1237         ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1238                                                                 sizeof(tmp));
1239         if (ret != 0) {
1240                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1241                             ret);
1242                 return ret;
1243         }
1244
1245         /* NDIS drivers clear keys when infrastructure mode is
1246          * changed. But Linux tools assume otherwise. So set the
1247          * keys */
1248         restore_keys(usbdev);
1249
1250         priv->infra_mode = mode;
1251         return 0;
1252 }
1253
1254 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1255 {
1256         __le32 tmp;
1257
1258         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1259
1260         if (rts_threshold < 0 || rts_threshold > 2347)
1261                 rts_threshold = 2347;
1262
1263         tmp = cpu_to_le32(rts_threshold);
1264         return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1265                                                                 sizeof(tmp));
1266 }
1267
1268 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1269 {
1270         __le32 tmp;
1271
1272         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1273
1274         if (frag_threshold < 256 || frag_threshold > 2346)
1275                 frag_threshold = 2346;
1276
1277         tmp = cpu_to_le32(frag_threshold);
1278         return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1279                                                                 sizeof(tmp));
1280 }
1281
1282 static void set_default_iw_params(struct usbnet *usbdev)
1283 {
1284         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1285         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1286                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1287         set_priv_filter(usbdev);
1288         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1289 }
1290
1291 static int deauthenticate(struct usbnet *usbdev)
1292 {
1293         int ret;
1294
1295         ret = disassociate(usbdev, true);
1296         set_default_iw_params(usbdev);
1297         return ret;
1298 }
1299
1300 static int set_channel(struct usbnet *usbdev, int channel)
1301 {
1302         struct ndis_80211_conf config;
1303         unsigned int dsconfig;
1304         int len, ret;
1305
1306         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1307
1308         /* this OID is valid only when not associated */
1309         if (is_associated(usbdev))
1310                 return 0;
1311
1312         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1313
1314         len = sizeof(config);
1315         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1316         if (ret < 0) {
1317                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1318                            __func__);
1319                 return ret;
1320         }
1321
1322         config.ds_config = cpu_to_le32(dsconfig);
1323         ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1324                                                                 sizeof(config));
1325
1326         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1327
1328         return ret;
1329 }
1330
1331 /* index must be 0 - N, as per NDIS  */
1332 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1333                                                                 int index)
1334 {
1335         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1336         struct ndis_80211_wep_key ndis_key;
1337         u32 cipher;
1338         int ret;
1339
1340         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1341                    __func__, index, key_len);
1342
1343         if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1344                 return -EINVAL;
1345
1346         if (key_len == 5)
1347                 cipher = WLAN_CIPHER_SUITE_WEP40;
1348         else
1349                 cipher = WLAN_CIPHER_SUITE_WEP104;
1350
1351         memset(&ndis_key, 0, sizeof(ndis_key));
1352
1353         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1354         ndis_key.length = cpu_to_le32(key_len);
1355         ndis_key.index = cpu_to_le32(index);
1356         memcpy(&ndis_key.material, key, key_len);
1357
1358         if (index == priv->encr_tx_key_index) {
1359                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1360                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1361                                                         RNDIS_WLAN_ALG_NONE);
1362                 if (ret)
1363                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1364                                     ret);
1365         }
1366
1367         ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1368                                                         sizeof(ndis_key));
1369         if (ret != 0) {
1370                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1371                             index + 1, ret);
1372                 return ret;
1373         }
1374
1375         priv->encr_keys[index].len = key_len;
1376         priv->encr_keys[index].cipher = cipher;
1377         memcpy(&priv->encr_keys[index].material, key, key_len);
1378         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1379
1380         return 0;
1381 }
1382
1383 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1384                         int index, const u8 *addr, const u8 *rx_seq,
1385                         int seq_len, u32 cipher, __le32 flags)
1386 {
1387         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1388         struct ndis_80211_key ndis_key;
1389         bool is_addr_ok;
1390         int ret;
1391
1392         if (index < 0 || index >= 4) {
1393                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1394                            __func__, index);
1395                 return -EINVAL;
1396         }
1397         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1398                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1399                            __func__, key_len);
1400                 return -EINVAL;
1401         }
1402         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1403                 if (!rx_seq || seq_len <= 0) {
1404                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1405                                    __func__);
1406                         return -EINVAL;
1407                 }
1408                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1409                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1410                         return -EINVAL;
1411                 }
1412         }
1413
1414         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1415                                         !is_broadcast_ether_addr(addr);
1416         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1417                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1418                            __func__, addr);
1419                 return -EINVAL;
1420         }
1421
1422         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1423                    __func__, index,
1424                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1425                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1426                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1427
1428         memset(&ndis_key, 0, sizeof(ndis_key));
1429
1430         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1431                                 sizeof(ndis_key.material) + key_len);
1432         ndis_key.length = cpu_to_le32(key_len);
1433         ndis_key.index = cpu_to_le32(index) | flags;
1434
1435         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1436                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1437                  * different order than NDIS spec, so swap the order here. */
1438                 memcpy(ndis_key.material, key, 16);
1439                 memcpy(ndis_key.material + 16, key + 24, 8);
1440                 memcpy(ndis_key.material + 24, key + 16, 8);
1441         } else
1442                 memcpy(ndis_key.material, key, key_len);
1443
1444         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1445                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1446
1447         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1448                 /* pairwise key */
1449                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1450         } else {
1451                 /* group key */
1452                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1453                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1454                 else
1455                         get_bssid(usbdev, ndis_key.bssid);
1456         }
1457
1458         ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1459                                         le32_to_cpu(ndis_key.size));
1460         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1461                    __func__, ret);
1462         if (ret != 0)
1463                 return ret;
1464
1465         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1466         priv->encr_keys[index].len = key_len;
1467         priv->encr_keys[index].cipher = cipher;
1468         memcpy(&priv->encr_keys[index].material, key, key_len);
1469         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1470                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1471         else
1472                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1473
1474         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1475                 priv->encr_tx_key_index = index;
1476
1477         return 0;
1478 }
1479
1480 static int restore_key(struct usbnet *usbdev, int key_idx)
1481 {
1482         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1483         struct rndis_wlan_encr_key key;
1484
1485         if (is_wpa_key(priv, key_idx))
1486                 return 0;
1487
1488         key = priv->encr_keys[key_idx];
1489
1490         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1491
1492         if (key.len == 0)
1493                 return 0;
1494
1495         return add_wep_key(usbdev, key.material, key.len, key_idx);
1496 }
1497
1498 static void restore_keys(struct usbnet *usbdev)
1499 {
1500         int i;
1501
1502         for (i = 0; i < 4; i++)
1503                 restore_key(usbdev, i);
1504 }
1505
1506 static void clear_key(struct rndis_wlan_private *priv, int idx)
1507 {
1508         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1509 }
1510
1511 /* remove_key is for both wep and wpa */
1512 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1513 {
1514         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1515         struct ndis_80211_remove_key remove_key;
1516         __le32 keyindex;
1517         bool is_wpa;
1518         int ret;
1519
1520         if (priv->encr_keys[index].len == 0)
1521                 return 0;
1522
1523         is_wpa = is_wpa_key(priv, index);
1524
1525         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1526                    __func__, index, is_wpa ? "wpa" : "wep",
1527                    priv->encr_keys[index].len);
1528
1529         clear_key(priv, index);
1530
1531         if (is_wpa) {
1532                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1533                 remove_key.index = cpu_to_le32(index);
1534                 if (bssid) {
1535                         /* pairwise key */
1536                         if (!is_broadcast_ether_addr(bssid))
1537                                 remove_key.index |=
1538                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1539                         memcpy(remove_key.bssid, bssid,
1540                                         sizeof(remove_key.bssid));
1541                 } else
1542                         memset(remove_key.bssid, 0xff,
1543                                                 sizeof(remove_key.bssid));
1544
1545                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1546                                                         sizeof(remove_key));
1547                 if (ret != 0)
1548                         return ret;
1549         } else {
1550                 keyindex = cpu_to_le32(index);
1551                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1552                                                         sizeof(keyindex));
1553                 if (ret != 0) {
1554                         netdev_warn(usbdev->net,
1555                                     "removing encryption key %d failed (%08X)\n",
1556                                     index, ret);
1557                         return ret;
1558                 }
1559         }
1560
1561         /* if it is transmit key, disable encryption */
1562         if (index == priv->encr_tx_key_index)
1563                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1564
1565         return 0;
1566 }
1567
1568 static void set_multicast_list(struct usbnet *usbdev)
1569 {
1570         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1571         struct netdev_hw_addr *ha;
1572         __le32 filter, basefilter;
1573         int ret;
1574         char *mc_addrs = NULL;
1575         int mc_count;
1576
1577         basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1578                               RNDIS_PACKET_TYPE_BROADCAST;
1579
1580         if (usbdev->net->flags & IFF_PROMISC) {
1581                 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1582                         RNDIS_PACKET_TYPE_ALL_LOCAL;
1583         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1584                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1585         }
1586
1587         if (filter != basefilter)
1588                 goto set_filter;
1589
1590         /*
1591          * mc_list should be accessed holding the lock, so copy addresses to
1592          * local buffer first.
1593          */
1594         netif_addr_lock_bh(usbdev->net);
1595         mc_count = netdev_mc_count(usbdev->net);
1596         if (mc_count > priv->multicast_size) {
1597                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1598         } else if (mc_count) {
1599                 int i = 0;
1600
1601                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1602                 if (!mc_addrs) {
1603                         netdev_warn(usbdev->net,
1604                                     "couldn't alloc %d bytes of memory\n",
1605                                     mc_count * ETH_ALEN);
1606                         netif_addr_unlock_bh(usbdev->net);
1607                         return;
1608                 }
1609
1610                 netdev_for_each_mc_addr(ha, usbdev->net)
1611                         memcpy(mc_addrs + i++ * ETH_ALEN,
1612                                ha->addr, ETH_ALEN);
1613         }
1614         netif_addr_unlock_bh(usbdev->net);
1615
1616         if (filter != basefilter)
1617                 goto set_filter;
1618
1619         if (mc_count) {
1620                 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1621                                     mc_count * ETH_ALEN);
1622                 kfree(mc_addrs);
1623                 if (ret == 0)
1624                         filter |= RNDIS_PACKET_TYPE_MULTICAST;
1625                 else
1626                         filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1627
1628                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1629                            mc_count, priv->multicast_size, ret);
1630         }
1631
1632 set_filter:
1633         ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1634                                                         sizeof(filter));
1635         if (ret < 0) {
1636                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1637                             le32_to_cpu(filter));
1638         }
1639
1640         netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1641                    le32_to_cpu(filter), ret);
1642 }
1643
1644 #ifdef DEBUG
1645 static void debug_print_pmkids(struct usbnet *usbdev,
1646                                 struct ndis_80211_pmkid *pmkids,
1647                                 const char *func_str)
1648 {
1649         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1650         int i, len, count, max_pmkids, entry_len;
1651
1652         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1653         len = le32_to_cpu(pmkids->length);
1654         count = le32_to_cpu(pmkids->bssid_info_count);
1655
1656         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1657
1658         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1659                                 "%d)\n", func_str, count, len, entry_len);
1660
1661         if (count > max_pmkids)
1662                 count = max_pmkids;
1663
1664         for (i = 0; i < count; i++) {
1665                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1666
1667                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1668                                 "pmkid: %08X:%08X:%08X:%08X\n",
1669                                 func_str, pmkids->bssid_info[i].bssid,
1670                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1671                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1672         }
1673 }
1674 #else
1675 static void debug_print_pmkids(struct usbnet *usbdev,
1676                                 struct ndis_80211_pmkid *pmkids,
1677                                 const char *func_str)
1678 {
1679         return;
1680 }
1681 #endif
1682
1683 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1684 {
1685         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1686         struct ndis_80211_pmkid *pmkids;
1687         int len, ret, max_pmkids;
1688
1689         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1690         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1691
1692         pmkids = kzalloc(len, GFP_KERNEL);
1693         if (!pmkids)
1694                 return ERR_PTR(-ENOMEM);
1695
1696         pmkids->length = cpu_to_le32(len);
1697         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1698
1699         ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1700         if (ret < 0) {
1701                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1702                                 " -> %d\n", __func__, len, max_pmkids, ret);
1703
1704                 kfree(pmkids);
1705                 return ERR_PTR(ret);
1706         }
1707
1708         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1709                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1710
1711         debug_print_pmkids(usbdev, pmkids, __func__);
1712
1713         return pmkids;
1714 }
1715
1716 static int set_device_pmkids(struct usbnet *usbdev,
1717                                 struct ndis_80211_pmkid *pmkids)
1718 {
1719         int ret, len, num_pmkids;
1720
1721         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1722         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1723         pmkids->length = cpu_to_le32(len);
1724
1725         debug_print_pmkids(usbdev, pmkids, __func__);
1726
1727         ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1728                                                 le32_to_cpu(pmkids->length));
1729         if (ret < 0) {
1730                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1731                                 "\n", __func__, len, num_pmkids, ret);
1732         }
1733
1734         kfree(pmkids);
1735         return ret;
1736 }
1737
1738 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1739                                                 struct ndis_80211_pmkid *pmkids,
1740                                                 struct cfg80211_pmksa *pmksa,
1741                                                 int max_pmkids)
1742 {
1743         int i, len, count, newlen, err;
1744
1745         len = le32_to_cpu(pmkids->length);
1746         count = le32_to_cpu(pmkids->bssid_info_count);
1747
1748         if (count > max_pmkids)
1749                 count = max_pmkids;
1750
1751         for (i = 0; i < count; i++)
1752                 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1753                                                         pmksa->bssid))
1754                         break;
1755
1756         /* pmkid not found */
1757         if (i == count) {
1758                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1759                                         __func__, pmksa->bssid);
1760                 err = -ENOENT;
1761                 goto error;
1762         }
1763
1764         for (; i + 1 < count; i++)
1765                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1766
1767         count--;
1768         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1769
1770         pmkids->length = cpu_to_le32(newlen);
1771         pmkids->bssid_info_count = cpu_to_le32(count);
1772
1773         return pmkids;
1774 error:
1775         kfree(pmkids);
1776         return ERR_PTR(err);
1777 }
1778
1779 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1780                                                 struct ndis_80211_pmkid *pmkids,
1781                                                 struct cfg80211_pmksa *pmksa,
1782                                                 int max_pmkids)
1783 {
1784         int i, err, len, count, newlen;
1785
1786         len = le32_to_cpu(pmkids->length);
1787         count = le32_to_cpu(pmkids->bssid_info_count);
1788
1789         if (count > max_pmkids)
1790                 count = max_pmkids;
1791
1792         /* update with new pmkid */
1793         for (i = 0; i < count; i++) {
1794                 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1795                                                         pmksa->bssid))
1796                         continue;
1797
1798                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1799                                                                 WLAN_PMKID_LEN);
1800
1801                 return pmkids;
1802         }
1803
1804         /* out of space, return error */
1805         if (i == max_pmkids) {
1806                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1807                 err = -ENOSPC;
1808                 goto error;
1809         }
1810
1811         /* add new pmkid */
1812         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1813
1814         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1815         if (!pmkids) {
1816                 err = -ENOMEM;
1817                 goto error;
1818         }
1819
1820         pmkids->length = cpu_to_le32(newlen);
1821         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1822
1823         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1824         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1825
1826         return pmkids;
1827 error:
1828         kfree(pmkids);
1829         return ERR_PTR(err);
1830 }
1831
1832 /*
1833  * cfg80211 ops
1834  */
1835 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1836                                         struct net_device *dev,
1837                                         enum nl80211_iftype type, u32 *flags,
1838                                         struct vif_params *params)
1839 {
1840         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1841         struct usbnet *usbdev = priv->usbdev;
1842         int mode;
1843
1844         switch (type) {
1845         case NL80211_IFTYPE_ADHOC:
1846                 mode = NDIS_80211_INFRA_ADHOC;
1847                 break;
1848         case NL80211_IFTYPE_STATION:
1849                 mode = NDIS_80211_INFRA_INFRA;
1850                 break;
1851         default:
1852                 return -EINVAL;
1853         }
1854
1855         priv->wdev.iftype = type;
1856
1857         return set_infra_mode(usbdev, mode);
1858 }
1859
1860 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1861 {
1862         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1863         struct usbnet *usbdev = priv->usbdev;
1864         int err;
1865
1866         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1867                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1868                 if (err < 0)
1869                         return err;
1870         }
1871
1872         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1873                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1874                 if (err < 0)
1875                         return err;
1876         }
1877
1878         return 0;
1879 }
1880
1881 static int rndis_set_tx_power(struct wiphy *wiphy,
1882                               enum nl80211_tx_power_setting type,
1883                               int mbm)
1884 {
1885         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1886         struct usbnet *usbdev = priv->usbdev;
1887
1888         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1889                    __func__, type, mbm);
1890
1891         if (mbm < 0 || (mbm % 100))
1892                 return -ENOTSUPP;
1893
1894         /* Device doesn't support changing txpower after initialization, only
1895          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1896          * currently used.
1897          */
1898         if (type == NL80211_TX_POWER_AUTOMATIC ||
1899             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1900                 if (!priv->radio_on)
1901                         disassociate(usbdev, true); /* turn on radio */
1902
1903                 return 0;
1904         }
1905
1906         return -ENOTSUPP;
1907 }
1908
1909 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1910 {
1911         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1912         struct usbnet *usbdev = priv->usbdev;
1913
1914         *dbm = get_bcm4320_power_dbm(priv);
1915
1916         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1917
1918         return 0;
1919 }
1920
1921 #define SCAN_DELAY_JIFFIES (6 * HZ)
1922 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1923                         struct cfg80211_scan_request *request)
1924 {
1925         struct usbnet *usbdev = netdev_priv(dev);
1926         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1927         int ret;
1928         int delay = SCAN_DELAY_JIFFIES;
1929
1930         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1931
1932         /* Get current bssid list from device before new scan, as new scan
1933          * clears internal bssid list.
1934          */
1935         rndis_check_bssid_list(usbdev, NULL, NULL);
1936
1937         if (!request)
1938                 return -EINVAL;
1939
1940         if (priv->scan_request && priv->scan_request != request)
1941                 return -EBUSY;
1942
1943         priv->scan_request = request;
1944
1945         ret = rndis_start_bssid_list_scan(usbdev);
1946         if (ret == 0) {
1947                 if (priv->device_type == RNDIS_BCM4320A)
1948                         delay = HZ;
1949
1950                 /* Wait before retrieving scan results from device */
1951                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1952         }
1953
1954         return ret;
1955 }
1956
1957 static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1958                                         struct ndis_80211_bssid_ex *bssid)
1959 {
1960         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1961         struct ieee80211_channel *channel;
1962         s32 signal;
1963         u64 timestamp;
1964         u16 capability;
1965         u16 beacon_interval;
1966         struct ndis_80211_fixed_ies *fixed;
1967         int ie_len, bssid_len;
1968         u8 *ie;
1969
1970         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1971                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1972
1973         /* parse bssid structure */
1974         bssid_len = le32_to_cpu(bssid->length);
1975
1976         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1977                         sizeof(struct ndis_80211_fixed_ies))
1978                 return NULL;
1979
1980         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1981
1982         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1983         ie_len = min(bssid_len - (int)sizeof(*bssid),
1984                                         (int)le32_to_cpu(bssid->ie_length));
1985         ie_len -= sizeof(struct ndis_80211_fixed_ies);
1986         if (ie_len < 0)
1987                 return NULL;
1988
1989         /* extract data for cfg80211_inform_bss */
1990         channel = ieee80211_get_channel(priv->wdev.wiphy,
1991                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1992         if (!channel)
1993                 return NULL;
1994
1995         signal = level_to_qual(le32_to_cpu(bssid->rssi));
1996         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1997         capability = le16_to_cpu(fixed->capabilities);
1998         beacon_interval = le16_to_cpu(fixed->beacon_interval);
1999
2000         return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2001                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2002                 GFP_KERNEL);
2003 }
2004
2005 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2006                                         struct ndis_80211_bssid_ex *bssid,
2007                                         int *bssid_len, void *buf, int len)
2008 {
2009         void *buf_end, *bssid_end;
2010
2011         buf_end = (char *)buf + len;
2012         bssid_end = (char *)bssid + *bssid_len;
2013
2014         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2015                 *bssid_len = 0;
2016                 return NULL;
2017         } else {
2018                 bssid = (void *)((char *)bssid + *bssid_len);
2019                 *bssid_len = le32_to_cpu(bssid->length);
2020                 return bssid;
2021         }
2022 }
2023
2024 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2025                                   int bssid_len, void *buf, int len)
2026 {
2027         void *buf_end, *bssid_end;
2028
2029         if (!bssid || bssid_len <= 0 || bssid_len > len)
2030                 return false;
2031
2032         buf_end = (char *)buf + len;
2033         bssid_end = (char *)bssid + bssid_len;
2034
2035         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2036 }
2037
2038 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2039                                         bool *matched)
2040 {
2041         void *buf = NULL;
2042         struct ndis_80211_bssid_list_ex *bssid_list;
2043         struct ndis_80211_bssid_ex *bssid;
2044         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2045
2046         netdev_dbg(usbdev->net, "%s()\n", __func__);
2047
2048         len = CONTROL_BUFFER_SIZE;
2049 resize_buf:
2050         buf = kzalloc(len, GFP_KERNEL);
2051         if (!buf) {
2052                 ret = -ENOMEM;
2053                 goto out;
2054         }
2055
2056         /* BSSID-list might have got bigger last time we checked, keep
2057          * resizing until it won't get any bigger.
2058          */
2059         new_len = len;
2060         ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2061         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2062                 goto out;
2063
2064         if (new_len > len) {
2065                 len = new_len;
2066                 kfree(buf);
2067                 goto resize_buf;
2068         }
2069
2070         len = new_len;
2071
2072         bssid_list = buf;
2073         count = le32_to_cpu(bssid_list->num_items);
2074         real_count = 0;
2075         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2076
2077         bssid_len = 0;
2078         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2079
2080         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2081          * received 'num_items' and walking through full bssid buffer instead.
2082          */
2083         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2084                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2085                     matched) {
2086                         if (compare_ether_addr(bssid->mac, match_bssid))
2087                                 *matched = true;
2088                 }
2089
2090                 real_count++;
2091                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2092         }
2093
2094         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2095                                 " %d\n", __func__, count, real_count);
2096
2097 out:
2098         kfree(buf);
2099         return ret;
2100 }
2101
2102 static void rndis_get_scan_results(struct work_struct *work)
2103 {
2104         struct rndis_wlan_private *priv =
2105                 container_of(work, struct rndis_wlan_private, scan_work.work);
2106         struct usbnet *usbdev = priv->usbdev;
2107         int ret;
2108
2109         netdev_dbg(usbdev->net, "get_scan_results\n");
2110
2111         if (!priv->scan_request)
2112                 return;
2113
2114         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2115
2116         cfg80211_scan_done(priv->scan_request, ret < 0);
2117
2118         priv->scan_request = NULL;
2119 }
2120
2121 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2122                                         struct cfg80211_connect_params *sme)
2123 {
2124         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2125         struct usbnet *usbdev = priv->usbdev;
2126         struct ieee80211_channel *channel = sme->channel;
2127         struct ndis_80211_ssid ssid;
2128         int pairwise = RNDIS_WLAN_ALG_NONE;
2129         int groupwise = RNDIS_WLAN_ALG_NONE;
2130         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2131         int length, i, ret, chan = -1;
2132
2133         if (channel)
2134                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2135
2136         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2137         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2138                 pairwise |=
2139                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2140
2141         if (sme->crypto.n_ciphers_pairwise > 0 &&
2142                         pairwise == RNDIS_WLAN_ALG_NONE) {
2143                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2144                 return -ENOTSUPP;
2145         }
2146
2147         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2148                 keymgmt |=
2149                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2150
2151         if (sme->crypto.n_akm_suites > 0 &&
2152                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2153                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2154                 return -ENOTSUPP;
2155         }
2156
2157         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2158                    sme->ssid, sme->bssid, chan,
2159                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2160                    groupwise, pairwise, keymgmt);
2161
2162         if (is_associated(usbdev))
2163                 disassociate(usbdev, false);
2164
2165         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2166         if (ret < 0) {
2167                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2168                            ret);
2169                 goto err_turn_radio_on;
2170         }
2171
2172         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2173                                                                 keymgmt);
2174         if (ret < 0) {
2175                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2176                            ret);
2177                 goto err_turn_radio_on;
2178         }
2179
2180         set_priv_filter(usbdev);
2181
2182         ret = set_encr_mode(usbdev, pairwise, groupwise);
2183         if (ret < 0) {
2184                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2185                            ret);
2186                 goto err_turn_radio_on;
2187         }
2188
2189         if (channel) {
2190                 ret = set_channel(usbdev, chan);
2191                 if (ret < 0) {
2192                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2193                                    ret);
2194                         goto err_turn_radio_on;
2195                 }
2196         }
2197
2198         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2199                 priv->encr_tx_key_index = sme->key_idx;
2200                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2201                 if (ret < 0) {
2202                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2203                                    ret, sme->key_len, sme->key_idx);
2204                         goto err_turn_radio_on;
2205                 }
2206         }
2207
2208         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2209                                 !is_broadcast_ether_addr(sme->bssid)) {
2210                 ret = set_bssid(usbdev, sme->bssid);
2211                 if (ret < 0) {
2212                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2213                                    ret);
2214                         goto err_turn_radio_on;
2215                 }
2216         } else
2217                 clear_bssid(usbdev);
2218
2219         length = sme->ssid_len;
2220         if (length > NDIS_802_11_LENGTH_SSID)
2221                 length = NDIS_802_11_LENGTH_SSID;
2222
2223         memset(&ssid, 0, sizeof(ssid));
2224         ssid.length = cpu_to_le32(length);
2225         memcpy(ssid.essid, sme->ssid, length);
2226
2227         /* Pause and purge rx queue, so we don't pass packets before
2228          * 'media connect'-indication.
2229          */
2230         usbnet_pause_rx(usbdev);
2231         usbnet_purge_paused_rxq(usbdev);
2232
2233         ret = set_essid(usbdev, &ssid);
2234         if (ret < 0)
2235                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2236         return ret;
2237
2238 err_turn_radio_on:
2239         disassociate(usbdev, true);
2240
2241         return ret;
2242 }
2243
2244 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2245                                                                 u16 reason_code)
2246 {
2247         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2248         struct usbnet *usbdev = priv->usbdev;
2249
2250         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2251
2252         priv->connected = false;
2253         memset(priv->bssid, 0, ETH_ALEN);
2254
2255         return deauthenticate(usbdev);
2256 }
2257
2258 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2259                                         struct cfg80211_ibss_params *params)
2260 {
2261         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2262         struct usbnet *usbdev = priv->usbdev;
2263         struct ieee80211_channel *channel = params->channel;
2264         struct ndis_80211_ssid ssid;
2265         enum nl80211_auth_type auth_type;
2266         int ret, alg, length, chan = -1;
2267
2268         if (channel)
2269                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2270
2271         /* TODO: How to handle ad-hoc encryption?
2272          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2273          * pre-shared for encryption (open/shared/wpa), is key set before
2274          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2275          */
2276         if (params->privacy) {
2277                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2278                 alg = RNDIS_WLAN_ALG_WEP;
2279         } else {
2280                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2281                 alg = RNDIS_WLAN_ALG_NONE;
2282         }
2283
2284         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2285                    params->ssid, params->bssid, chan, params->privacy);
2286
2287         if (is_associated(usbdev))
2288                 disassociate(usbdev, false);
2289
2290         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2291         if (ret < 0) {
2292                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2293                            ret);
2294                 goto err_turn_radio_on;
2295         }
2296
2297         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2298         if (ret < 0) {
2299                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2300                            ret);
2301                 goto err_turn_radio_on;
2302         }
2303
2304         set_priv_filter(usbdev);
2305
2306         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2307         if (ret < 0) {
2308                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2309                            ret);
2310                 goto err_turn_radio_on;
2311         }
2312
2313         if (channel) {
2314                 ret = set_channel(usbdev, chan);
2315                 if (ret < 0) {
2316                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2317                                    ret);
2318                         goto err_turn_radio_on;
2319                 }
2320         }
2321
2322         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2323                                 !is_broadcast_ether_addr(params->bssid)) {
2324                 ret = set_bssid(usbdev, params->bssid);
2325                 if (ret < 0) {
2326                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2327                                    ret);
2328                         goto err_turn_radio_on;
2329                 }
2330         } else
2331                 clear_bssid(usbdev);
2332
2333         length = params->ssid_len;
2334         if (length > NDIS_802_11_LENGTH_SSID)
2335                 length = NDIS_802_11_LENGTH_SSID;
2336
2337         memset(&ssid, 0, sizeof(ssid));
2338         ssid.length = cpu_to_le32(length);
2339         memcpy(ssid.essid, params->ssid, length);
2340
2341         /* Don't need to pause rx queue for ad-hoc. */
2342         usbnet_purge_paused_rxq(usbdev);
2343         usbnet_resume_rx(usbdev);
2344
2345         ret = set_essid(usbdev, &ssid);
2346         if (ret < 0)
2347                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2348                            ret);
2349         return ret;
2350
2351 err_turn_radio_on:
2352         disassociate(usbdev, true);
2353
2354         return ret;
2355 }
2356
2357 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2358 {
2359         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2360         struct usbnet *usbdev = priv->usbdev;
2361
2362         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2363
2364         priv->connected = false;
2365         memset(priv->bssid, 0, ETH_ALEN);
2366
2367         return deauthenticate(usbdev);
2368 }
2369
2370 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2371         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2372 {
2373         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2374         struct usbnet *usbdev = priv->usbdev;
2375
2376         return set_channel(usbdev,
2377                         ieee80211_frequency_to_channel(chan->center_freq));
2378 }
2379
2380 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2381                          u8 key_index, bool pairwise, const u8 *mac_addr,
2382                          struct key_params *params)
2383 {
2384         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2385         struct usbnet *usbdev = priv->usbdev;
2386         __le32 flags;
2387
2388         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2389                    __func__, key_index, mac_addr, params->cipher);
2390
2391         switch (params->cipher) {
2392         case WLAN_CIPHER_SUITE_WEP40:
2393         case WLAN_CIPHER_SUITE_WEP104:
2394                 return add_wep_key(usbdev, params->key, params->key_len,
2395                                                                 key_index);
2396         case WLAN_CIPHER_SUITE_TKIP:
2397         case WLAN_CIPHER_SUITE_CCMP:
2398                 flags = 0;
2399
2400                 if (params->seq && params->seq_len > 0)
2401                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2402                 if (mac_addr)
2403                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2404                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2405
2406                 return add_wpa_key(usbdev, params->key, params->key_len,
2407                                 key_index, mac_addr, params->seq,
2408                                 params->seq_len, params->cipher, flags);
2409         default:
2410                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2411                            __func__, params->cipher);
2412                 return -ENOTSUPP;
2413         }
2414 }
2415
2416 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2417                          u8 key_index, bool pairwise, const u8 *mac_addr)
2418 {
2419         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2420         struct usbnet *usbdev = priv->usbdev;
2421
2422         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2423
2424         return remove_key(usbdev, key_index, mac_addr);
2425 }
2426
2427 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2428                                  u8 key_index, bool unicast, bool multicast)
2429 {
2430         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2431         struct usbnet *usbdev = priv->usbdev;
2432         struct rndis_wlan_encr_key key;
2433
2434         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2435
2436         priv->encr_tx_key_index = key_index;
2437
2438         key = priv->encr_keys[key_index];
2439
2440         return add_wep_key(usbdev, key.material, key.len, key_index);
2441 }
2442
2443 static void rndis_fill_station_info(struct usbnet *usbdev,
2444                                                 struct station_info *sinfo)
2445 {
2446         __le32 linkspeed, rssi;
2447         int ret, len;
2448
2449         memset(sinfo, 0, sizeof(*sinfo));
2450
2451         len = sizeof(linkspeed);
2452         ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2453         if (ret == 0) {
2454                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2455                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2456         }
2457
2458         len = sizeof(rssi);
2459         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2460         if (ret == 0) {
2461                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2462                 sinfo->filled |= STATION_INFO_SIGNAL;
2463         }
2464 }
2465
2466 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2467                                         u8 *mac, struct station_info *sinfo)
2468 {
2469         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2470         struct usbnet *usbdev = priv->usbdev;
2471
2472         if (compare_ether_addr(priv->bssid, mac))
2473                 return -ENOENT;
2474
2475         rndis_fill_station_info(usbdev, sinfo);
2476
2477         return 0;
2478 }
2479
2480 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2481                                int idx, u8 *mac, struct station_info *sinfo)
2482 {
2483         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2484         struct usbnet *usbdev = priv->usbdev;
2485
2486         if (idx != 0)
2487                 return -ENOENT;
2488
2489         memcpy(mac, priv->bssid, ETH_ALEN);
2490
2491         rndis_fill_station_info(usbdev, sinfo);
2492
2493         return 0;
2494 }
2495
2496 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2497                                 struct cfg80211_pmksa *pmksa)
2498 {
2499         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2500         struct usbnet *usbdev = priv->usbdev;
2501         struct ndis_80211_pmkid *pmkids;
2502         u32 *tmp = (u32 *)pmksa->pmkid;
2503
2504         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2505                         pmksa->bssid,
2506                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2507                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2508
2509         pmkids = get_device_pmkids(usbdev);
2510         if (IS_ERR(pmkids)) {
2511                 /* couldn't read PMKID cache from device */
2512                 return PTR_ERR(pmkids);
2513         }
2514
2515         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2516         if (IS_ERR(pmkids)) {
2517                 /* not found, list full, etc */
2518                 return PTR_ERR(pmkids);
2519         }
2520
2521         return set_device_pmkids(usbdev, pmkids);
2522 }
2523
2524 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2525                                 struct cfg80211_pmksa *pmksa)
2526 {
2527         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2528         struct usbnet *usbdev = priv->usbdev;
2529         struct ndis_80211_pmkid *pmkids;
2530         u32 *tmp = (u32 *)pmksa->pmkid;
2531
2532         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2533                         pmksa->bssid,
2534                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2535                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2536
2537         pmkids = get_device_pmkids(usbdev);
2538         if (IS_ERR(pmkids)) {
2539                 /* Couldn't read PMKID cache from device */
2540                 return PTR_ERR(pmkids);
2541         }
2542
2543         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2544         if (IS_ERR(pmkids)) {
2545                 /* not found, etc */
2546                 return PTR_ERR(pmkids);
2547         }
2548
2549         return set_device_pmkids(usbdev, pmkids);
2550 }
2551
2552 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2553 {
2554         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2555         struct usbnet *usbdev = priv->usbdev;
2556         struct ndis_80211_pmkid pmkid;
2557
2558         netdev_dbg(usbdev->net, "%s()\n", __func__);
2559
2560         memset(&pmkid, 0, sizeof(pmkid));
2561
2562         pmkid.length = cpu_to_le32(sizeof(pmkid));
2563         pmkid.bssid_info_count = cpu_to_le32(0);
2564
2565         return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2566 }
2567
2568 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2569                                            struct ndis_80211_assoc_info *info)
2570 {
2571         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2572         struct ieee80211_channel *channel;
2573         struct ndis_80211_conf config;
2574         struct ndis_80211_ssid ssid;
2575         s32 signal;
2576         u64 timestamp;
2577         u16 capability;
2578         u16 beacon_interval;
2579         __le32 rssi;
2580         u8 ie_buf[34];
2581         int len, ret, ie_len;
2582
2583         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2584         len = sizeof(rssi);
2585         rssi = 0;
2586         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2587         signal = level_to_qual(le32_to_cpu(rssi));
2588
2589         netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2590                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2591                    level_to_qual(le32_to_cpu(rssi)));
2592
2593         /* Get AP capabilities */
2594         if (info) {
2595                 capability = le16_to_cpu(info->resp_ie.capa);
2596         } else {
2597                 /* Set atleast ESS/IBSS capability */
2598                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2599                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2600         }
2601
2602         /* Get channel and beacon interval */
2603         len = sizeof(config);
2604         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
2605         netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
2606                                 __func__, ret);
2607         if (ret >= 0) {
2608                 beacon_interval = le16_to_cpu(config.beacon_period);
2609                 channel = ieee80211_get_channel(priv->wdev.wiphy,
2610                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
2611                 if (!channel) {
2612                         netdev_warn(usbdev->net, "%s(): could not get channel."
2613                                                  "\n", __func__);
2614                         return;
2615                 }
2616         } else {
2617                 netdev_warn(usbdev->net, "%s(): could not get configuration.\n",
2618                                          __func__);
2619                 return;
2620         }
2621
2622         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2623         len = sizeof(ssid);
2624         memset(&ssid, 0, sizeof(ssid));
2625         ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2626         netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2627                                 "'%.32s'\n", __func__, ret,
2628                                 le32_to_cpu(ssid.length), ssid.essid);
2629
2630         if (le32_to_cpu(ssid.length) > 32)
2631                 ssid.length = cpu_to_le32(32);
2632
2633         ie_buf[0] = WLAN_EID_SSID;
2634         ie_buf[1] = le32_to_cpu(ssid.length);
2635         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2636
2637         ie_len = le32_to_cpu(ssid.length) + 2;
2638
2639         /* no tsf */
2640         timestamp = 0;
2641
2642         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2643                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2644                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2645                 bssid, (u32)timestamp, capability, beacon_interval, ie_len,
2646                 ssid.essid, signal);
2647
2648         cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2649                 timestamp, capability, beacon_interval, ie_buf, ie_len,
2650                 signal, GFP_KERNEL);
2651 }
2652
2653 /*
2654  * workers, indication handlers, device poller
2655  */
2656 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2657 {
2658         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2659         struct ndis_80211_assoc_info *info = NULL;
2660         u8 bssid[ETH_ALEN];
2661         int resp_ie_len, req_ie_len;
2662         u8 *req_ie, *resp_ie;
2663         int ret, offset;
2664         bool roamed = false;
2665         bool match_bss;
2666
2667         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2668                 /* received media connect indication while connected, either
2669                  * device reassociated with same AP or roamed to new. */
2670                 roamed = true;
2671         }
2672
2673         req_ie_len = 0;
2674         resp_ie_len = 0;
2675         req_ie = NULL;
2676         resp_ie = NULL;
2677
2678         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2679                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2680                 if (!info) {
2681                         /* No memory? Try resume work later */
2682                         set_bit(WORK_LINK_UP, &priv->work_pending);
2683                         queue_work(priv->workqueue, &priv->work);
2684                         return;
2685                 }
2686
2687                 /* Get association info IEs from device. */
2688                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2689                 if (!ret) {
2690                         req_ie_len = le32_to_cpu(info->req_ie_length);
2691                         if (req_ie_len > 0) {
2692                                 offset = le32_to_cpu(info->offset_req_ies);
2693
2694                                 if (offset > CONTROL_BUFFER_SIZE)
2695                                         offset = CONTROL_BUFFER_SIZE;
2696
2697                                 req_ie = (u8 *)info + offset;
2698
2699                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2700                                         req_ie_len =
2701                                                 CONTROL_BUFFER_SIZE - offset;
2702                         }
2703
2704                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2705                         if (resp_ie_len > 0) {
2706                                 offset = le32_to_cpu(info->offset_resp_ies);
2707
2708                                 if (offset > CONTROL_BUFFER_SIZE)
2709                                         offset = CONTROL_BUFFER_SIZE;
2710
2711                                 resp_ie = (u8 *)info + offset;
2712
2713                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2714                                         resp_ie_len =
2715                                                 CONTROL_BUFFER_SIZE - offset;
2716                         }
2717                 } else {
2718                         /* Since rndis_wlan_craft_connected_bss() might use info
2719                          * later and expects info to contain valid data if
2720                          * non-null, free info and set NULL here.
2721                          */
2722                         kfree(info);
2723                         info = NULL;
2724                 }
2725         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2726                 return;
2727
2728         ret = get_bssid(usbdev, bssid);
2729         if (ret < 0)
2730                 memset(bssid, 0, sizeof(bssid));
2731
2732         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2733                    bssid, roamed ? " roamed" : "");
2734
2735         /* Internal bss list in device should contain at least the currently
2736          * connected bss and we can get it to cfg80211 with
2737          * rndis_check_bssid_list().
2738          *
2739          * NDIS spec says: "If the device is associated, but the associated
2740          *  BSSID is not in its BSSID scan list, then the driver must add an
2741          *  entry for the BSSID at the end of the data that it returns in
2742          *  response to query of OID_802_11_BSSID_LIST."
2743          *
2744          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2745          */
2746         match_bss = false;
2747         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2748
2749         if (!is_zero_ether_addr(bssid) && !match_bss) {
2750                 /* Couldn't get bss from device, we need to manually craft bss
2751                  * for cfg80211.
2752                  */
2753                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2754         }
2755
2756         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2757                 if (!roamed)
2758                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2759                                                 req_ie_len, resp_ie,
2760                                                 resp_ie_len, 0, GFP_KERNEL);
2761                 else
2762                         cfg80211_roamed(usbdev->net, bssid, req_ie, req_ie_len,
2763                                         resp_ie, resp_ie_len, GFP_KERNEL);
2764         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2765                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2766
2767         if (info != NULL)
2768                 kfree(info);
2769
2770         priv->connected = true;
2771         memcpy(priv->bssid, bssid, ETH_ALEN);
2772
2773         usbnet_resume_rx(usbdev);
2774         netif_carrier_on(usbdev->net);
2775 }
2776
2777 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2778 {
2779         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2780
2781         if (priv->connected) {
2782                 priv->connected = false;
2783                 memset(priv->bssid, 0, ETH_ALEN);
2784
2785                 deauthenticate(usbdev);
2786
2787                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2788         }
2789
2790         netif_carrier_off(usbdev->net);
2791 }
2792
2793 static void rndis_wlan_worker(struct work_struct *work)
2794 {
2795         struct rndis_wlan_private *priv =
2796                 container_of(work, struct rndis_wlan_private, work);
2797         struct usbnet *usbdev = priv->usbdev;
2798
2799         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2800                 rndis_wlan_do_link_up_work(usbdev);
2801
2802         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2803                 rndis_wlan_do_link_down_work(usbdev);
2804
2805         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2806                 set_multicast_list(usbdev);
2807 }
2808
2809 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2810 {
2811         struct usbnet *usbdev = netdev_priv(dev);
2812         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2813
2814         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2815                 return;
2816
2817         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2818         queue_work(priv->workqueue, &priv->work);
2819 }
2820
2821 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2822                                 struct ndis_80211_status_indication *indication,
2823                                 int len)
2824 {
2825         u8 *buf;
2826         const char *type;
2827         int flags, buflen, key_id;
2828         bool pairwise_error, group_error;
2829         struct ndis_80211_auth_request *auth_req;
2830         enum nl80211_key_type key_type;
2831
2832         /* must have at least one array entry */
2833         if (len < offsetof(struct ndis_80211_status_indication, u) +
2834                                 sizeof(struct ndis_80211_auth_request)) {
2835                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2836                             len);
2837                 return;
2838         }
2839
2840         buf = (void *)&indication->u.auth_request[0];
2841         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2842
2843         while (buflen >= sizeof(*auth_req)) {
2844                 auth_req = (void *)buf;
2845                 type = "unknown";
2846                 flags = le32_to_cpu(auth_req->flags);
2847                 pairwise_error = false;
2848                 group_error = false;
2849
2850                 if (flags & 0x1)
2851                         type = "reauth request";
2852                 if (flags & 0x2)
2853                         type = "key update request";
2854                 if (flags & 0x6) {
2855                         pairwise_error = true;
2856                         type = "pairwise_error";
2857                 }
2858                 if (flags & 0xe) {
2859                         group_error = true;
2860                         type = "group_error";
2861                 }
2862
2863                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2864                             type, le32_to_cpu(auth_req->flags));
2865
2866                 if (pairwise_error) {
2867                         key_type = NL80211_KEYTYPE_PAIRWISE;
2868                         key_id = -1;
2869
2870                         cfg80211_michael_mic_failure(usbdev->net,
2871                                                         auth_req->bssid,
2872                                                         key_type, key_id, NULL,
2873                                                         GFP_KERNEL);
2874                 }
2875
2876                 if (group_error) {
2877                         key_type = NL80211_KEYTYPE_GROUP;
2878                         key_id = -1;
2879
2880                         cfg80211_michael_mic_failure(usbdev->net,
2881                                                         auth_req->bssid,
2882                                                         key_type, key_id, NULL,
2883                                                         GFP_KERNEL);
2884                 }
2885
2886                 buflen -= le32_to_cpu(auth_req->length);
2887                 buf += le32_to_cpu(auth_req->length);
2888         }
2889 }
2890
2891 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2892                                 struct ndis_80211_status_indication *indication,
2893                                 int len)
2894 {
2895         struct ndis_80211_pmkid_cand_list *cand_list;
2896         int list_len, expected_len, i;
2897
2898         if (len < offsetof(struct ndis_80211_status_indication, u) +
2899                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2900                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2901                             len);
2902                 return;
2903         }
2904
2905         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2906                         sizeof(struct ndis_80211_pmkid_candidate);
2907         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2908                         offsetof(struct ndis_80211_status_indication, u);
2909
2910         if (len < expected_len) {
2911                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2912                             len, expected_len);
2913                 return;
2914         }
2915
2916         cand_list = &indication->u.cand_list;
2917
2918         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2919                     le32_to_cpu(cand_list->version),
2920                     le32_to_cpu(cand_list->num_candidates));
2921
2922         if (le32_to_cpu(cand_list->version) != 1)
2923                 return;
2924
2925         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2926                 struct ndis_80211_pmkid_candidate *cand =
2927                                                 &cand_list->candidate_list[i];
2928
2929                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
2930                            i, le32_to_cpu(cand->flags), cand->bssid);
2931
2932 #if 0
2933                 struct iw_pmkid_cand pcand;
2934                 union iwreq_data wrqu;
2935
2936                 memset(&pcand, 0, sizeof(pcand));
2937                 if (le32_to_cpu(cand->flags) & 0x01)
2938                         pcand.flags |= IW_PMKID_CAND_PREAUTH;
2939                 pcand.index = i;
2940                 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
2941
2942                 memset(&wrqu, 0, sizeof(wrqu));
2943                 wrqu.data.length = sizeof(pcand);
2944                 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
2945                                                                 (u8 *)&pcand);
2946 #endif
2947         }
2948 }
2949
2950 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
2951                         struct rndis_indicate *msg, int buflen)
2952 {
2953         struct ndis_80211_status_indication *indication;
2954         int len, offset;
2955
2956         offset = offsetof(struct rndis_indicate, status) +
2957                         le32_to_cpu(msg->offset);
2958         len = le32_to_cpu(msg->length);
2959
2960         if (len < 8) {
2961                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
2962                             len);
2963                 return;
2964         }
2965
2966         if (offset + len > buflen) {
2967                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
2968                             offset + len, buflen);
2969                 return;
2970         }
2971
2972         indication = (void *)((u8 *)msg + offset);
2973
2974         switch (le32_to_cpu(indication->status_type)) {
2975         case NDIS_80211_STATUSTYPE_RADIOSTATE:
2976                 netdev_info(usbdev->net, "radio state indication: %i\n",
2977                             le32_to_cpu(indication->u.radio_status));
2978                 return;
2979
2980         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
2981                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
2982                             le32_to_cpu(indication->u.media_stream_mode));
2983                 return;
2984
2985         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
2986                 rndis_wlan_auth_indication(usbdev, indication, len);
2987                 return;
2988
2989         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
2990                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
2991                 return;
2992
2993         default:
2994                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
2995                             le32_to_cpu(indication->status_type));
2996         }
2997 }
2998
2999 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3000 {
3001         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3002         struct rndis_indicate *msg = ind;
3003
3004         switch (msg->status) {
3005         case RNDIS_STATUS_MEDIA_CONNECT:
3006                 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3007                         /* OID_802_11_ADD_KEY causes sometimes extra
3008                          * "media connect" indications which confuses driver
3009                          * and userspace to think that device is
3010                          * roaming/reassociating when it isn't.
3011                          */
3012                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3013                         return;
3014                 }
3015
3016                 usbnet_pause_rx(usbdev);
3017
3018                 netdev_info(usbdev->net, "media connect\n");
3019
3020                 /* queue work to avoid recursive calls into rndis_command */
3021                 set_bit(WORK_LINK_UP, &priv->work_pending);
3022                 queue_work(priv->workqueue, &priv->work);
3023                 break;
3024
3025         case RNDIS_STATUS_MEDIA_DISCONNECT:
3026                 netdev_info(usbdev->net, "media disconnect\n");
3027
3028                 /* queue work to avoid recursive calls into rndis_command */
3029                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3030                 queue_work(priv->workqueue, &priv->work);
3031                 break;
3032
3033         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3034                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3035                 break;
3036
3037         default:
3038                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3039                             le32_to_cpu(msg->status));
3040                 break;
3041         }
3042 }
3043
3044 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3045 {
3046         struct {
3047                 __le32  num_items;
3048                 __le32  items[8];
3049         } networks_supported;
3050         struct ndis_80211_capability *caps;
3051         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3052         int len, retval, i, n;
3053         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3054
3055         /* determine supported modes */
3056         len = sizeof(networks_supported);
3057         retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3058                                                 &networks_supported, &len);
3059         if (retval >= 0) {
3060                 n = le32_to_cpu(networks_supported.num_items);
3061                 if (n > 8)
3062                         n = 8;
3063                 for (i = 0; i < n; i++) {
3064                         switch (le32_to_cpu(networks_supported.items[i])) {
3065                         case NDIS_80211_TYPE_FREQ_HOP:
3066                         case NDIS_80211_TYPE_DIRECT_SEQ:
3067                                 priv->caps |= CAP_MODE_80211B;
3068                                 break;
3069                         case NDIS_80211_TYPE_OFDM_A:
3070                                 priv->caps |= CAP_MODE_80211A;
3071                                 break;
3072                         case NDIS_80211_TYPE_OFDM_G:
3073                                 priv->caps |= CAP_MODE_80211G;
3074                                 break;
3075                         }
3076                 }
3077         }
3078
3079         /* get device 802.11 capabilities, number of PMKIDs */
3080         caps = (struct ndis_80211_capability *)caps_buf;
3081         len = sizeof(caps_buf);
3082         retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3083         if (retval >= 0) {
3084                 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3085                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3086                                 le32_to_cpu(caps->length),
3087                                 le32_to_cpu(caps->version),
3088                                 le32_to_cpu(caps->num_pmkids),
3089                                 le32_to_cpu(caps->num_auth_encr_pair));
3090                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3091         } else
3092                 wiphy->max_num_pmkids = 0;
3093
3094         return retval;
3095 }
3096
3097 #define DEVICE_POLLER_JIFFIES (HZ)
3098 static void rndis_device_poller(struct work_struct *work)
3099 {
3100         struct rndis_wlan_private *priv =
3101                 container_of(work, struct rndis_wlan_private,
3102                                                         dev_poller_work.work);
3103         struct usbnet *usbdev = priv->usbdev;
3104         __le32 rssi, tmp;
3105         int len, ret, j;
3106         int update_jiffies = DEVICE_POLLER_JIFFIES;
3107         void *buf;
3108
3109         /* Only check/do workaround when connected. Calling is_associated()
3110          * also polls device with rndis_command() and catches for media link
3111          * indications.
3112          */
3113         if (!is_associated(usbdev)) {
3114                 /* Workaround bad scanning in BCM4320a devices with active
3115                  * background scanning when not associated.
3116                  */
3117                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3118                     !priv->scan_request) {
3119                         /* Get previous scan results */
3120                         rndis_check_bssid_list(usbdev, NULL, NULL);
3121
3122                         /* Initiate new scan */
3123                         rndis_start_bssid_list_scan(usbdev);
3124                 }
3125
3126                 goto end;
3127         }
3128
3129         len = sizeof(rssi);
3130         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3131         if (ret == 0)
3132                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3133
3134         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3135                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3136
3137         /* Workaround transfer stalls on poor quality links.
3138          * TODO: find right way to fix these stalls (as stalls do not happen
3139          * with ndiswrapper/windows driver). */
3140         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3141                 /* Decrease stats worker interval to catch stalls.
3142                  * faster. Faster than 400-500ms causes packet loss,
3143                  * Slower doesn't catch stalls fast enough.
3144                  */
3145                 j = msecs_to_jiffies(priv->param_workaround_interval);
3146                 if (j > DEVICE_POLLER_JIFFIES)
3147                         j = DEVICE_POLLER_JIFFIES;
3148                 else if (j <= 0)
3149                         j = 1;
3150                 update_jiffies = j;
3151
3152                 /* Send scan OID. Use of both OIDs is required to get device
3153                  * working.
3154                  */
3155                 tmp = cpu_to_le32(1);
3156                 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3157                                                                 sizeof(tmp));
3158
3159                 len = CONTROL_BUFFER_SIZE;
3160                 buf = kmalloc(len, GFP_KERNEL);
3161                 if (!buf)
3162                         goto end;
3163
3164                 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3165                 kfree(buf);
3166         }
3167
3168 end:
3169         if (update_jiffies >= HZ)
3170                 update_jiffies = round_jiffies_relative(update_jiffies);
3171         else {
3172                 j = round_jiffies_relative(update_jiffies);
3173                 if (abs(j - update_jiffies) <= 10)
3174                         update_jiffies = j;
3175         }
3176
3177         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3178                                                                 update_jiffies);
3179 }
3180
3181 /*
3182  * driver/device initialization
3183  */
3184 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3185 {
3186         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3187
3188         priv->device_type = device_type;
3189
3190         priv->param_country[0] = modparam_country[0];
3191         priv->param_country[1] = modparam_country[1];
3192         priv->param_country[2] = 0;
3193         priv->param_frameburst   = modparam_frameburst;
3194         priv->param_afterburner  = modparam_afterburner;
3195         priv->param_power_save   = modparam_power_save;
3196         priv->param_power_output = modparam_power_output;
3197         priv->param_roamtrigger  = modparam_roamtrigger;
3198         priv->param_roamdelta    = modparam_roamdelta;
3199
3200         priv->param_country[0] = toupper(priv->param_country[0]);
3201         priv->param_country[1] = toupper(priv->param_country[1]);
3202         /* doesn't support EU as country code, use FI instead */
3203         if (!strcmp(priv->param_country, "EU"))
3204                 strcpy(priv->param_country, "FI");
3205
3206         if (priv->param_power_save < 0)
3207                 priv->param_power_save = 0;
3208         else if (priv->param_power_save > 2)
3209                 priv->param_power_save = 2;
3210
3211         if (priv->param_power_output < 0)
3212                 priv->param_power_output = 0;
3213         else if (priv->param_power_output > 3)
3214                 priv->param_power_output = 3;
3215
3216         if (priv->param_roamtrigger < -80)
3217                 priv->param_roamtrigger = -80;
3218         else if (priv->param_roamtrigger > -60)
3219                 priv->param_roamtrigger = -60;
3220
3221         if (priv->param_roamdelta < 0)
3222                 priv->param_roamdelta = 0;
3223         else if (priv->param_roamdelta > 2)
3224                 priv->param_roamdelta = 2;
3225
3226         if (modparam_workaround_interval < 0)
3227                 priv->param_workaround_interval = 500;
3228         else
3229                 priv->param_workaround_interval = modparam_workaround_interval;
3230 }
3231
3232 static int unknown_early_init(struct usbnet *usbdev)
3233 {
3234         /* copy module parameters for unknown so that iwconfig reports txpower
3235          * and workaround parameter is copied to private structure correctly.
3236          */
3237         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3238
3239         /* This is unknown device, so do not try set configuration parameters.
3240          */
3241
3242         return 0;
3243 }
3244
3245 static int bcm4320a_early_init(struct usbnet *usbdev)
3246 {
3247         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3248          * and workaround parameter is copied to private structure correctly.
3249          */
3250         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3251
3252         /* bcm4320a doesn't handle configuration parameters well. Try
3253          * set any and you get partially zeroed mac and broken device.
3254          */
3255
3256         return 0;
3257 }
3258
3259 static int bcm4320b_early_init(struct usbnet *usbdev)
3260 {
3261         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3262         char buf[8];
3263
3264         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3265
3266         /* Early initialization settings, setting these won't have effect
3267          * if called after generic_rndis_bind().
3268          */
3269
3270         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3271         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3272                                         priv->param_frameburst ? "1" : "0");
3273         rndis_set_config_parameter_str(usbdev, "Afterburner",
3274                                         priv->param_afterburner ? "1" : "0");
3275         sprintf(buf, "%d", priv->param_power_save);
3276         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3277         sprintf(buf, "%d", priv->param_power_output);
3278         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3279         sprintf(buf, "%d", priv->param_roamtrigger);
3280         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3281         sprintf(buf, "%d", priv->param_roamdelta);
3282         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3283
3284         return 0;
3285 }
3286
3287 /* same as rndis_netdev_ops but with local multicast handler */
3288 static const struct net_device_ops rndis_wlan_netdev_ops = {
3289         .ndo_open               = usbnet_open,
3290         .ndo_stop               = usbnet_stop,
3291         .ndo_start_xmit         = usbnet_start_xmit,
3292         .ndo_tx_timeout         = usbnet_tx_timeout,
3293         .ndo_set_mac_address    = eth_mac_addr,
3294         .ndo_validate_addr      = eth_validate_addr,
3295         .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
3296 };
3297
3298 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3299 {
3300         struct wiphy *wiphy;
3301         struct rndis_wlan_private *priv;
3302         int retval, len;
3303         __le32 tmp;
3304
3305         /* allocate wiphy and rndis private data
3306          * NOTE: We only support a single virtual interface, so wiphy
3307          * and wireless_dev are somewhat synonymous for this device.
3308          */
3309         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3310         if (!wiphy)
3311                 return -ENOMEM;
3312
3313         priv = wiphy_priv(wiphy);
3314         usbdev->net->ieee80211_ptr = &priv->wdev;
3315         priv->wdev.wiphy = wiphy;
3316         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3317
3318         /* These have to be initialized before calling generic_rndis_bind().
3319          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3320          */
3321         usbdev->driver_priv = priv;
3322         priv->usbdev = usbdev;
3323
3324         mutex_init(&priv->command_lock);
3325
3326         /* because rndis_command() sleeps we need to use workqueue */
3327         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3328         INIT_WORK(&priv->work, rndis_wlan_worker);
3329         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3330         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3331
3332         /* try bind rndis_host */
3333         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3334         if (retval < 0)
3335                 goto fail;
3336
3337         /* generic_rndis_bind set packet filter to multicast_all+
3338          * promisc mode which doesn't work well for our devices (device
3339          * picks up rssi to closest station instead of to access point).
3340          *
3341          * rndis_host wants to avoid all OID as much as possible
3342          * so do promisc/multicast handling in rndis_wlan.
3343          */
3344         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3345
3346         tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3347         retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3348                                                                 sizeof(tmp));
3349
3350         len = sizeof(tmp);
3351         retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3352                                                                 &len);
3353         priv->multicast_size = le32_to_cpu(tmp);
3354         if (retval < 0 || priv->multicast_size < 0)
3355                 priv->multicast_size = 0;
3356         if (priv->multicast_size > 0)
3357                 usbdev->net->flags |= IFF_MULTICAST;
3358         else
3359                 usbdev->net->flags &= ~IFF_MULTICAST;
3360
3361         /* fill-out wiphy structure and register w/ cfg80211 */
3362         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3363         wiphy->privid = rndis_wiphy_privid;
3364         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3365                                         | BIT(NL80211_IFTYPE_ADHOC);
3366         wiphy->max_scan_ssids = 1;
3367
3368         /* TODO: fill-out band/encr information based on priv->caps */
3369         rndis_wlan_get_caps(usbdev, wiphy);
3370
3371         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3372         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3373         priv->band.channels = priv->channels;
3374         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3375         priv->band.bitrates = priv->rates;
3376         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3377         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3378         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3379
3380         memcpy(priv->cipher_suites, rndis_cipher_suites,
3381                                                 sizeof(rndis_cipher_suites));
3382         wiphy->cipher_suites = priv->cipher_suites;
3383         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3384
3385         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3386
3387         if (wiphy_register(wiphy)) {
3388                 retval = -ENODEV;
3389                 goto fail;
3390         }
3391
3392         set_default_iw_params(usbdev);
3393
3394         /* set default rts/frag */
3395         rndis_set_wiphy_params(wiphy,
3396                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3397
3398         /* turn radio on */
3399         priv->radio_on = true;
3400         disassociate(usbdev, true);
3401         netif_carrier_off(usbdev->net);
3402
3403         return 0;
3404
3405 fail:
3406         cancel_delayed_work_sync(&priv->dev_poller_work);
3407         cancel_delayed_work_sync(&priv->scan_work);
3408         cancel_work_sync(&priv->work);
3409         flush_workqueue(priv->workqueue);
3410         destroy_workqueue(priv->workqueue);
3411
3412         wiphy_free(wiphy);
3413         return retval;
3414 }
3415
3416 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3417 {
3418         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3419
3420         /* turn radio off */
3421         disassociate(usbdev, false);
3422
3423         cancel_delayed_work_sync(&priv->dev_poller_work);
3424         cancel_delayed_work_sync(&priv->scan_work);
3425         cancel_work_sync(&priv->work);
3426         flush_workqueue(priv->workqueue);
3427         destroy_workqueue(priv->workqueue);
3428
3429         rndis_unbind(usbdev, intf);
3430
3431         wiphy_unregister(priv->wdev.wiphy);
3432         wiphy_free(priv->wdev.wiphy);
3433 }
3434
3435 static int rndis_wlan_reset(struct usbnet *usbdev)
3436 {
3437         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3438         int retval;
3439
3440         netdev_dbg(usbdev->net, "%s()\n", __func__);
3441
3442         retval = rndis_reset(usbdev);
3443         if (retval)
3444                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3445
3446         /* rndis_reset cleared multicast list, so restore here.
3447            (set_multicast_list() also turns on current packet filter) */
3448         set_multicast_list(usbdev);
3449
3450         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3451                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3452
3453         return deauthenticate(usbdev);
3454 }
3455
3456 static int rndis_wlan_stop(struct usbnet *usbdev)
3457 {
3458         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3459         int retval;
3460         __le32 filter;
3461
3462         netdev_dbg(usbdev->net, "%s()\n", __func__);
3463
3464         retval = disassociate(usbdev, false);
3465
3466         priv->work_pending = 0;
3467         cancel_delayed_work_sync(&priv->dev_poller_work);
3468         cancel_delayed_work_sync(&priv->scan_work);
3469         cancel_work_sync(&priv->work);
3470         flush_workqueue(priv->workqueue);
3471
3472         if (priv->scan_request) {
3473                 cfg80211_scan_done(priv->scan_request, true);
3474                 priv->scan_request = NULL;
3475         }
3476
3477         /* Set current packet filter zero to block receiving data packets from
3478            device. */
3479         filter = 0;
3480         rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3481                                                                 sizeof(filter));
3482
3483         return retval;
3484 }
3485
3486 static const struct driver_info bcm4320b_info = {
3487         .description =  "Wireless RNDIS device, BCM4320b based",
3488         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3489                                 FLAG_AVOID_UNLINK_URBS,
3490         .bind =         rndis_wlan_bind,
3491         .unbind =       rndis_wlan_unbind,
3492         .status =       rndis_status,
3493         .rx_fixup =     rndis_rx_fixup,
3494         .tx_fixup =     rndis_tx_fixup,
3495         .reset =        rndis_wlan_reset,
3496         .stop =         rndis_wlan_stop,
3497         .early_init =   bcm4320b_early_init,
3498         .indication =   rndis_wlan_indication,
3499 };
3500
3501 static const struct driver_info bcm4320a_info = {
3502         .description =  "Wireless RNDIS device, BCM4320a based",
3503         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3504                                 FLAG_AVOID_UNLINK_URBS,
3505         .bind =         rndis_wlan_bind,
3506         .unbind =       rndis_wlan_unbind,
3507         .status =       rndis_status,
3508         .rx_fixup =     rndis_rx_fixup,
3509         .tx_fixup =     rndis_tx_fixup,
3510         .reset =        rndis_wlan_reset,
3511         .stop =         rndis_wlan_stop,
3512         .early_init =   bcm4320a_early_init,
3513         .indication =   rndis_wlan_indication,
3514 };
3515
3516 static const struct driver_info rndis_wlan_info = {
3517         .description =  "Wireless RNDIS device",
3518         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3519                                 FLAG_AVOID_UNLINK_URBS,
3520         .bind =         rndis_wlan_bind,
3521         .unbind =       rndis_wlan_unbind,
3522         .status =       rndis_status,
3523         .rx_fixup =     rndis_rx_fixup,
3524         .tx_fixup =     rndis_tx_fixup,
3525         .reset =        rndis_wlan_reset,
3526         .stop =         rndis_wlan_stop,
3527         .early_init =   unknown_early_init,
3528         .indication =   rndis_wlan_indication,
3529 };
3530
3531 /*-------------------------------------------------------------------------*/
3532
3533 static const struct usb_device_id products [] = {
3534 #define RNDIS_MASTER_INTERFACE \
3535         .bInterfaceClass        = USB_CLASS_COMM, \
3536         .bInterfaceSubClass     = 2 /* ACM */, \
3537         .bInterfaceProtocol     = 0x0ff
3538
3539 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3540  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3541  */
3542 {
3543         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3544                           | USB_DEVICE_ID_MATCH_DEVICE,
3545         .idVendor               = 0x0411,
3546         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3547         RNDIS_MASTER_INTERFACE,
3548         .driver_info            = (unsigned long) &bcm4320b_info,
3549 }, {
3550         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3551                           | USB_DEVICE_ID_MATCH_DEVICE,
3552         .idVendor               = 0x0baf,
3553         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3554         RNDIS_MASTER_INTERFACE,
3555         .driver_info            = (unsigned long) &bcm4320b_info,
3556 }, {
3557         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3558                           | USB_DEVICE_ID_MATCH_DEVICE,
3559         .idVendor               = 0x050d,
3560         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3561         RNDIS_MASTER_INTERFACE,
3562         .driver_info            = (unsigned long) &bcm4320b_info,
3563 }, {
3564         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3565                           | USB_DEVICE_ID_MATCH_DEVICE,
3566         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3567         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3568         RNDIS_MASTER_INTERFACE,
3569         .driver_info            = (unsigned long) &bcm4320b_info,
3570 }, {
3571         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3572                           | USB_DEVICE_ID_MATCH_DEVICE,
3573         .idVendor               = 0x13b1,
3574         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3575         RNDIS_MASTER_INTERFACE,
3576         .driver_info            = (unsigned long) &bcm4320b_info,
3577 }, {
3578         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3579                           | USB_DEVICE_ID_MATCH_DEVICE,
3580         .idVendor               = 0x13b1,
3581         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3582         RNDIS_MASTER_INTERFACE,
3583         .driver_info            = (unsigned long) &bcm4320b_info,
3584 }, {
3585         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3586                           | USB_DEVICE_ID_MATCH_DEVICE,
3587         .idVendor               = 0x0b05,
3588         .idProduct              = 0x1717,       /* Asus WL169gE */
3589         RNDIS_MASTER_INTERFACE,
3590         .driver_info            = (unsigned long) &bcm4320b_info,
3591 }, {
3592         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3593                           | USB_DEVICE_ID_MATCH_DEVICE,
3594         .idVendor               = 0x0a5c,
3595         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3596         RNDIS_MASTER_INTERFACE,
3597         .driver_info            = (unsigned long) &bcm4320b_info,
3598 }, {
3599         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3600                           | USB_DEVICE_ID_MATCH_DEVICE,
3601         .idVendor               = 0x1690,
3602         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3603         RNDIS_MASTER_INTERFACE,
3604         .driver_info            = (unsigned long) &bcm4320b_info,
3605 },
3606 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3607  * parameters available, hardware probably contain older firmware version with
3608  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3609  */
3610 {
3611         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3612                           | USB_DEVICE_ID_MATCH_DEVICE,
3613         .idVendor               = 0x13b1,
3614         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3615         RNDIS_MASTER_INTERFACE,
3616         .driver_info            = (unsigned long) &bcm4320a_info,
3617 }, {
3618         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3619                           | USB_DEVICE_ID_MATCH_DEVICE,
3620         .idVendor               = 0x0baf,
3621         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3622         RNDIS_MASTER_INTERFACE,
3623         .driver_info            = (unsigned long) &bcm4320a_info,
3624 }, {
3625         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3626                           | USB_DEVICE_ID_MATCH_DEVICE,
3627         .idVendor               = 0x0411,
3628         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3629         RNDIS_MASTER_INTERFACE,
3630         .driver_info            = (unsigned long) &bcm4320a_info,
3631 },
3632 /* Generic Wireless RNDIS devices that we don't have exact
3633  * idVendor/idProduct/chip yet.
3634  */
3635 {
3636         /* RNDIS is MSFT's un-official variant of CDC ACM */
3637         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3638         .driver_info = (unsigned long) &rndis_wlan_info,
3639 }, {
3640         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3641         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3642         .driver_info = (unsigned long) &rndis_wlan_info,
3643 },
3644         { },            // END
3645 };
3646 MODULE_DEVICE_TABLE(usb, products);
3647
3648 static struct usb_driver rndis_wlan_driver = {
3649         .name =         "rndis_wlan",
3650         .id_table =     products,
3651         .probe =        usbnet_probe,
3652         .disconnect =   usbnet_disconnect,
3653         .suspend =      usbnet_suspend,
3654         .resume =       usbnet_resume,
3655 };
3656
3657 static int __init rndis_wlan_init(void)
3658 {
3659         return usb_register(&rndis_wlan_driver);
3660 }
3661 module_init(rndis_wlan_init);
3662
3663 static void __exit rndis_wlan_exit(void)
3664 {
3665         usb_deregister(&rndis_wlan_driver);
3666 }
3667 module_exit(rndis_wlan_exit);
3668
3669 MODULE_AUTHOR("Bjorge Dijkstra");
3670 MODULE_AUTHOR("Jussi Kivilinna");
3671 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3672 MODULE_LICENSE("GPL");
3673