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_POWER_MODE                   cpu_to_le32(0x0d010216)
 133 #define OID_802_11_BSSID_LIST                   cpu_to_le32(0x0d010217)
 134
 135
 136 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
 137 #define WL_NOISE        -96     /* typical noise level in dBm */
 138 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
 139
 140
 141 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
 142  * based on wireless rndis) has default txpower of 13dBm.
 143  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
 144  *  100% : 20 mW ~ 13dBm
 145  *   75% : 15 mW ~ 12dBm
 146  *   50% : 10 mW ~ 10dBm
 147  *   25% :  5 mW ~  7dBm
 148  */
 149 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
 150 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
 151 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
 152 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
 153
 154
 155 /* codes for "status" field of completion messages */
 156 #define RNDIS_STATUS_ADAPTER_NOT_READY          cpu_to_le32(0xc0010011)
 157 #define RNDIS_STATUS_ADAPTER_NOT_OPEN           cpu_to_le32(0xc0010012)
 158
 159
 160 /* Known device types */
 161 #define RNDIS_UNKNOWN   0
 162 #define RNDIS_BCM4320A  1
 163 #define RNDIS_BCM4320B  2
 164
 165
 166 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 167  * slightly modified for datatype endianess, etc
 168  */
 169 #define NDIS_802_11_LENGTH_SSID 32
 170 #define NDIS_802_11_LENGTH_RATES 8
 171 #define NDIS_802_11_LENGTH_RATES_EX 16
 172
 173 enum ndis_80211_net_type {
 174         NDIS_80211_TYPE_FREQ_HOP,
 175         NDIS_80211_TYPE_DIRECT_SEQ,
 176         NDIS_80211_TYPE_OFDM_A,
 177         NDIS_80211_TYPE_OFDM_G
 178 };
 179
 180 enum ndis_80211_net_infra {
 181         NDIS_80211_INFRA_ADHOC,
 182         NDIS_80211_INFRA_INFRA,
 183         NDIS_80211_INFRA_AUTO_UNKNOWN
 184 };
 185
 186 enum ndis_80211_auth_mode {
 187         NDIS_80211_AUTH_OPEN,
 188         NDIS_80211_AUTH_SHARED,
 189         NDIS_80211_AUTH_AUTO_SWITCH,
 190         NDIS_80211_AUTH_WPA,
 191         NDIS_80211_AUTH_WPA_PSK,
 192         NDIS_80211_AUTH_WPA_NONE,
 193         NDIS_80211_AUTH_WPA2,
 194         NDIS_80211_AUTH_WPA2_PSK
 195 };
 196
 197 enum ndis_80211_encr_status {
 198         NDIS_80211_ENCR_WEP_ENABLED,
 199         NDIS_80211_ENCR_DISABLED,
 200         NDIS_80211_ENCR_WEP_KEY_ABSENT,
 201         NDIS_80211_ENCR_NOT_SUPPORTED,
 202         NDIS_80211_ENCR_TKIP_ENABLED,
 203         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 204         NDIS_80211_ENCR_CCMP_ENABLED,
 205         NDIS_80211_ENCR_CCMP_KEY_ABSENT
 206 };
 207
 208 enum ndis_80211_priv_filter {
 209         NDIS_80211_PRIV_ACCEPT_ALL,
 210         NDIS_80211_PRIV_8021X_WEP
 211 };
 212
 213 enum ndis_80211_status_type {
 214         NDIS_80211_STATUSTYPE_AUTHENTICATION,
 215         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 216         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 217         NDIS_80211_STATUSTYPE_RADIOSTATE,
 218 };
 219
 220 enum ndis_80211_media_stream_mode {
 221         NDIS_80211_MEDIA_STREAM_OFF,
 222         NDIS_80211_MEDIA_STREAM_ON
 223 };
 224
 225 enum ndis_80211_radio_status {
 226         NDIS_80211_RADIO_STATUS_ON,
 227         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 228         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 229 };
 230
 231 enum ndis_80211_addkey_bits {
 232         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 233         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 234         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 235         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 236 };
 237
 238 enum ndis_80211_addwep_bits {
 239         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 240         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 241 };
 242
 243 enum ndis_80211_power_mode {
 244         NDIS_80211_POWER_MODE_CAM,
 245         NDIS_80211_POWER_MODE_MAX_PSP,
 246         NDIS_80211_POWER_MODE_FAST_PSP,
 247 };
 248
 249 struct ndis_80211_auth_request {
 250         __le32 length;
 251         u8 bssid[6];
 252         u8 padding[2];
 253         __le32 flags;
 254 } __packed;
 255
 256 struct ndis_80211_pmkid_candidate {
 257         u8 bssid[6];
 258         u8 padding[2];
 259         __le32 flags;
 260 } __packed;
 261
 262 struct ndis_80211_pmkid_cand_list {
 263         __le32 version;
 264         __le32 num_candidates;
 265         struct ndis_80211_pmkid_candidate candidate_list[0];
 266 } __packed;
 267
 268 struct ndis_80211_status_indication {
 269         __le32 status_type;
 270         union {
 271                 __le32                                  media_stream_mode;
 272                 __le32                                  radio_status;
 273                 struct ndis_80211_auth_request          auth_request[0];
 274                 struct ndis_80211_pmkid_cand_list       cand_list;
 275         } u;
 276 } __packed;
 277
 278 struct ndis_80211_ssid {
 279         __le32 length;
 280         u8 essid[NDIS_802_11_LENGTH_SSID];
 281 } __packed;
 282
 283 struct ndis_80211_conf_freq_hop {
 284         __le32 length;
 285         __le32 hop_pattern;
 286         __le32 hop_set;
 287         __le32 dwell_time;
 288 } __packed;
 289
 290 struct ndis_80211_conf {
 291         __le32 length;
 292         __le32 beacon_period;
 293         __le32 atim_window;
 294         __le32 ds_config;
 295         struct ndis_80211_conf_freq_hop fh_config;
 296 } __packed;
 297
 298 struct ndis_80211_bssid_ex {
 299         __le32 length;
 300         u8 mac[6];
 301         u8 padding[2];
 302         struct ndis_80211_ssid ssid;
 303         __le32 privacy;
 304         __le32 rssi;
 305         __le32 net_type;
 306         struct ndis_80211_conf config;
 307         __le32 net_infra;
 308         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 309         __le32 ie_length;
 310         u8 ies[0];
 311 } __packed;
 312
 313 struct ndis_80211_bssid_list_ex {
 314         __le32 num_items;
 315         struct ndis_80211_bssid_ex bssid[0];
 316 } __packed;
 317
 318 struct ndis_80211_fixed_ies {
 319         u8 timestamp[8];
 320         __le16 beacon_interval;
 321         __le16 capabilities;
 322 } __packed;
 323
 324 struct ndis_80211_wep_key {
 325         __le32 size;
 326         __le32 index;
 327         __le32 length;
 328         u8 material[32];
 329 } __packed;
 330
 331 struct ndis_80211_key {
 332         __le32 size;
 333         __le32 index;
 334         __le32 length;
 335         u8 bssid[6];
 336         u8 padding[6];
 337         u8 rsc[8];
 338         u8 material[32];
 339 } __packed;
 340
 341 struct ndis_80211_remove_key {
 342         __le32 size;
 343         __le32 index;
 344         u8 bssid[6];
 345         u8 padding[2];
 346 } __packed;
 347
 348 struct ndis_config_param {
 349         __le32 name_offs;
 350         __le32 name_length;
 351         __le32 type;
 352         __le32 value_offs;
 353         __le32 value_length;
 354 } __packed;
 355
 356 struct ndis_80211_assoc_info {
 357         __le32 length;
 358         __le16 req_ies;
 359         struct req_ie {
 360                 __le16 capa;
 361                 __le16 listen_interval;
 362                 u8 cur_ap_address[6];
 363         } req_ie;
 364         __le32 req_ie_length;
 365         __le32 offset_req_ies;
 366         __le16 resp_ies;
 367         struct resp_ie {
 368                 __le16 capa;
 369                 __le16 status_code;
 370                 __le16 assoc_id;
 371         } resp_ie;
 372         __le32 resp_ie_length;
 373         __le32 offset_resp_ies;
 374 } __packed;
 375
 376 struct ndis_80211_auth_encr_pair {
 377         __le32 auth_mode;
 378         __le32 encr_mode;
 379 } __packed;
 380
 381 struct ndis_80211_capability {
 382         __le32 length;
 383         __le32 version;
 384         __le32 num_pmkids;
 385         __le32 num_auth_encr_pair;
 386         struct ndis_80211_auth_encr_pair auth_encr_pair[0];
 387 } __packed;
 388
 389 struct ndis_80211_bssid_info {
 390         u8 bssid[6];
 391         u8 pmkid[16];
 392 };
 393
 394 struct ndis_80211_pmkid {
 395         __le32 length;
 396         __le32 bssid_info_count;
 397         struct ndis_80211_bssid_info bssid_info[0];
 398 };
 399
 400 /*
 401  *  private data
 402  */
 403 #define NET_TYPE_11FB   0
 404
 405 #define CAP_MODE_80211A         1
 406 #define CAP_MODE_80211B         2
 407 #define CAP_MODE_80211G         4
 408 #define CAP_MODE_MASK           7
 409
 410 #define WORK_LINK_UP            (1<<0)
 411 #define WORK_LINK_DOWN          (1<<1)
 412 #define WORK_SET_MULTICAST_LIST (1<<2)
 413
 414 #define RNDIS_WLAN_ALG_NONE     0
 415 #define RNDIS_WLAN_ALG_WEP      (1<<0)
 416 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
 417 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
 418
 419 #define RNDIS_WLAN_KEY_MGMT_NONE        0
 420 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 421 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 422
 423 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 424
 425 static const struct ieee80211_channel rndis_channels[] = {
 426         { .center_freq = 2412 },
 427         { .center_freq = 2417 },
 428         { .center_freq = 2422 },
 429         { .center_freq = 2427 },
 430         { .center_freq = 2432 },
 431         { .center_freq = 2437 },
 432         { .center_freq = 2442 },
 433         { .center_freq = 2447 },
 434         { .center_freq = 2452 },
 435         { .center_freq = 2457 },
 436         { .center_freq = 2462 },
 437         { .center_freq = 2467 },
 438         { .center_freq = 2472 },
 439         { .center_freq = 2484 },
 440 };
 441
 442 static const struct ieee80211_rate rndis_rates[] = {
 443         { .bitrate = 10 },
 444         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 445         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 446         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 447         { .bitrate = 60 },
 448         { .bitrate = 90 },
 449         { .bitrate = 120 },
 450         { .bitrate = 180 },
 451         { .bitrate = 240 },
 452         { .bitrate = 360 },
 453         { .bitrate = 480 },
 454         { .bitrate = 540 }
 455 };
 456
 457 static const u32 rndis_cipher_suites[] = {
 458         WLAN_CIPHER_SUITE_WEP40,
 459         WLAN_CIPHER_SUITE_WEP104,
 460         WLAN_CIPHER_SUITE_TKIP,
 461         WLAN_CIPHER_SUITE_CCMP,
 462 };
 463
 464 struct rndis_wlan_encr_key {
 465         int len;
 466         u32 cipher;
 467         u8 material[32];
 468         u8 bssid[ETH_ALEN];
 469         bool pairwise;
 470         bool tx_key;
 471 };
 472
 473 /* RNDIS device private data */
 474 struct rndis_wlan_private {
 475         struct usbnet *usbdev;
 476
 477         struct wireless_dev wdev;
 478
 479         struct cfg80211_scan_request *scan_request;
 480
 481         struct workqueue_struct *workqueue;
 482         struct delayed_work dev_poller_work;
 483         struct delayed_work scan_work;
 484         struct work_struct work;
 485         struct mutex command_lock;
 486         unsigned long work_pending;
 487         int last_qual;
 488         s32 cqm_rssi_thold;
 489         u32 cqm_rssi_hyst;
 490         int last_cqm_event_rssi;
 491
 492         struct ieee80211_supported_band band;
 493         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 494         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 495         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 496
 497         int device_type;
 498         int caps;
 499         int multicast_size;
 500
 501         /* module parameters */
 502         char param_country[4];
 503         int  param_frameburst;
 504         int  param_afterburner;
 505         int  param_power_save;
 506         int  param_power_output;
 507         int  param_roamtrigger;
 508         int  param_roamdelta;
 509         u32  param_workaround_interval;
 510
 511         /* hardware state */
 512         bool radio_on;
 513         int power_mode;
 514         int infra_mode;
 515         bool connected;
 516         u8 bssid[ETH_ALEN];
 517         __le32 current_command_oid;
 518
 519         /* encryption stuff */
 520         int  encr_tx_key_index;
 521         struct rndis_wlan_encr_key encr_keys[4];
 522         int  wpa_version;
 523
 524         u8 command_buffer[COMMAND_BUFFER_SIZE];
 525 };
 526
 527 /*
 528  * cfg80211 ops
 529  */
 530 static int rndis_change_virtual_intf(struct wiphy *wiphy,
 531                                         struct net_device *dev,
 532                                         enum nl80211_iftype type, u32 *flags,
 533                                         struct vif_params *params);
 534
 535 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
 536                         struct cfg80211_scan_request *request);
 537
 538 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 539
 540 static int rndis_set_tx_power(struct wiphy *wiphy,
 541                               enum nl80211_tx_power_setting type,
 542                               int mbm);
 543 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
 544
 545 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 546                                 struct cfg80211_connect_params *sme);
 547
 548 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 549                                 u16 reason_code);
 550
 551 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 552                                         struct cfg80211_ibss_params *params);
 553
 554 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 555
 556 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
 557         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
 558
 559 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 560                          u8 key_index, bool pairwise, const u8 *mac_addr,
 561                          struct key_params *params);
 562
 563 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 564                          u8 key_index, bool pairwise, const u8 *mac_addr);
 565
 566 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 567                                  u8 key_index, bool unicast, bool multicast);
 568
 569 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 570                                         u8 *mac, struct station_info *sinfo);
 571
 572 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 573                                int idx, u8 *mac, struct station_info *sinfo);
 574
 575 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 576                                 struct cfg80211_pmksa *pmksa);
 577
 578 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 579                                 struct cfg80211_pmksa *pmksa);
 580
 581 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 582
 583 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 584                                 bool enabled, int timeout);
 585
 586 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 587                                         struct net_device *dev,
 588                                         s32 rssi_thold, u32 rssi_hyst);
 589
 590 static const struct cfg80211_ops rndis_config_ops = {
 591         .change_virtual_intf = rndis_change_virtual_intf,
 592         .scan = rndis_scan,
 593         .set_wiphy_params = rndis_set_wiphy_params,
 594         .set_tx_power = rndis_set_tx_power,
 595         .get_tx_power = rndis_get_tx_power,
 596         .connect = rndis_connect,
 597         .disconnect = rndis_disconnect,
 598         .join_ibss = rndis_join_ibss,
 599         .leave_ibss = rndis_leave_ibss,
 600         .set_channel = rndis_set_channel,
 601         .add_key = rndis_add_key,
 602         .del_key = rndis_del_key,
 603         .set_default_key = rndis_set_default_key,
 604         .get_station = rndis_get_station,
 605         .dump_station = rndis_dump_station,
 606         .set_pmksa = rndis_set_pmksa,
 607         .del_pmksa = rndis_del_pmksa,
 608         .flush_pmksa = rndis_flush_pmksa,
 609         .set_power_mgmt = rndis_set_power_mgmt,
 610         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 611 };
 612
 613 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 614
 615
 616 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 617 {
 618         return (struct rndis_wlan_private *)dev->driver_priv;
 619 }
 620
 621 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 622 {
 623         switch (priv->param_power_output) {
 624         default:
 625         case 3:
 626                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
 627         case 2:
 628                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
 629         case 1:
 630                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
 631         case 0:
 632                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
 633         }
 634 }
 635
 636 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
 637 {
 638         int cipher = priv->encr_keys[idx].cipher;
 639
 640         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 641                 cipher == WLAN_CIPHER_SUITE_TKIP);
 642 }
 643
 644 static int rndis_cipher_to_alg(u32 cipher)
 645 {
 646         switch (cipher) {
 647         default:
 648                 return RNDIS_WLAN_ALG_NONE;
 649         case WLAN_CIPHER_SUITE_WEP40:
 650         case WLAN_CIPHER_SUITE_WEP104:
 651                 return RNDIS_WLAN_ALG_WEP;
 652         case WLAN_CIPHER_SUITE_TKIP:
 653                 return RNDIS_WLAN_ALG_TKIP;
 654         case WLAN_CIPHER_SUITE_CCMP:
 655                 return RNDIS_WLAN_ALG_CCMP;
 656         }
 657 }
 658
 659 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 660 {
 661         switch (akm_suite) {
 662         default:
 663                 return RNDIS_WLAN_KEY_MGMT_NONE;
 664         case WLAN_AKM_SUITE_8021X:
 665                 return RNDIS_WLAN_KEY_MGMT_802_1X;
 666         case WLAN_AKM_SUITE_PSK:
 667                 return RNDIS_WLAN_KEY_MGMT_PSK;
 668         }
 669 }
 670
 671 #ifdef DEBUG
 672 static const char *oid_to_string(__le32 oid)
 673 {
 674         switch (oid) {
 675 #define OID_STR(oid) case oid: return(#oid)
 676                 /* from rndis_host.h */
 677                 OID_STR(OID_802_3_PERMANENT_ADDRESS);
 678                 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
 679                 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
 680                 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
 681
 682                 /* from rndis_wlan.c */
 683                 OID_STR(OID_GEN_LINK_SPEED);
 684                 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
 685
 686                 OID_STR(OID_GEN_XMIT_OK);
 687                 OID_STR(OID_GEN_RCV_OK);
 688                 OID_STR(OID_GEN_XMIT_ERROR);
 689                 OID_STR(OID_GEN_RCV_ERROR);
 690                 OID_STR(OID_GEN_RCV_NO_BUFFER);
 691
 692                 OID_STR(OID_802_3_CURRENT_ADDRESS);
 693                 OID_STR(OID_802_3_MULTICAST_LIST);
 694                 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
 695
 696                 OID_STR(OID_802_11_BSSID);
 697                 OID_STR(OID_802_11_SSID);
 698                 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
 699                 OID_STR(OID_802_11_ADD_WEP);
 700                 OID_STR(OID_802_11_REMOVE_WEP);
 701                 OID_STR(OID_802_11_DISASSOCIATE);
 702                 OID_STR(OID_802_11_AUTHENTICATION_MODE);
 703                 OID_STR(OID_802_11_PRIVACY_FILTER);
 704                 OID_STR(OID_802_11_BSSID_LIST_SCAN);
 705                 OID_STR(OID_802_11_ENCRYPTION_STATUS);
 706                 OID_STR(OID_802_11_ADD_KEY);
 707                 OID_STR(OID_802_11_REMOVE_KEY);
 708                 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
 709                 OID_STR(OID_802_11_CAPABILITY);
 710                 OID_STR(OID_802_11_PMKID);
 711                 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
 712                 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
 713                 OID_STR(OID_802_11_TX_POWER_LEVEL);
 714                 OID_STR(OID_802_11_RSSI);
 715                 OID_STR(OID_802_11_RSSI_TRIGGER);
 716                 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
 717                 OID_STR(OID_802_11_RTS_THRESHOLD);
 718                 OID_STR(OID_802_11_SUPPORTED_RATES);
 719                 OID_STR(OID_802_11_CONFIGURATION);
 720                 OID_STR(OID_802_11_POWER_MODE);
 721                 OID_STR(OID_802_11_BSSID_LIST);
 722 #undef OID_STR
 723         }
 724
 725         return "?";
 726 }
 727 #else
 728 static const char *oid_to_string(__le32 oid)
 729 {
 730         return "?";
 731 }
 732 #endif
 733
 734 /* translate error code */
 735 static int rndis_error_status(__le32 rndis_status)
 736 {
 737         int ret = -EINVAL;
 738         switch (rndis_status) {
 739         case RNDIS_STATUS_SUCCESS:
 740                 ret = 0;
 741                 break;
 742         case RNDIS_STATUS_FAILURE:
 743         case RNDIS_STATUS_INVALID_DATA:
 744                 ret = -EINVAL;
 745                 break;
 746         case RNDIS_STATUS_NOT_SUPPORTED:
 747                 ret = -EOPNOTSUPP;
 748                 break;
 749         case RNDIS_STATUS_ADAPTER_NOT_READY:
 750         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 751                 ret = -EBUSY;
 752                 break;
 753         }
 754         return ret;
 755 }
 756
 757 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
 758 {
 759         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 760         union {
 761                 void                    *buf;
 762                 struct rndis_msg_hdr    *header;
 763                 struct rndis_query      *get;
 764                 struct rndis_query_c    *get_c;
 765         } u;
 766         int ret, buflen;
 767         int resplen, respoffs, copylen;
 768
 769         buflen = *len + sizeof(*u.get);
 770         if (buflen < CONTROL_BUFFER_SIZE)
 771                 buflen = CONTROL_BUFFER_SIZE;
 772
 773         if (buflen > COMMAND_BUFFER_SIZE) {
 774                 u.buf = kmalloc(buflen, GFP_KERNEL);
 775                 if (!u.buf)
 776                         return -ENOMEM;
 777         } else {
 778                 u.buf = priv->command_buffer;
 779         }
 780
 781         mutex_lock(&priv->command_lock);
 782
 783         memset(u.get, 0, sizeof *u.get);
 784         u.get->msg_type = RNDIS_MSG_QUERY;
 785         u.get->msg_len = cpu_to_le32(sizeof *u.get);
 786         u.get->oid = oid;
 787
 788         priv->current_command_oid = oid;
 789         ret = rndis_command(dev, u.header, buflen);
 790         priv->current_command_oid = 0;
 791         if (ret < 0)
 792                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 793                            __func__, oid_to_string(oid), ret,
 794                            le32_to_cpu(u.get_c->status));
 795
 796         if (ret == 0) {
 797                 resplen = le32_to_cpu(u.get_c->len);
 798                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
 799
 800                 if (respoffs > buflen) {
 801                         /* Device returned data offset outside buffer, error. */
 802                         netdev_dbg(dev->net, "%s(%s): received invalid "
 803                                 "data offset: %d > %d\n", __func__,
 804                                 oid_to_string(oid), respoffs, buflen);
 805
 806                         ret = -EINVAL;
 807                         goto exit_unlock;
 808                 }
 809
 810                 if ((resplen + respoffs) > buflen) {
 811                         /* Device would have returned more data if buffer would
 812                          * have been big enough. Copy just the bits that we got.
 813                          */
 814                         copylen = buflen - respoffs;
 815                 } else {
 816                         copylen = resplen;
 817                 }
 818
 819                 if (copylen > *len)
 820                         copylen = *len;
 821
 822                 memcpy(data, u.buf + respoffs, copylen);
 823
 824                 *len = resplen;
 825
 826                 ret = rndis_error_status(u.get_c->status);
 827                 if (ret < 0)
 828                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 829                                    __func__, oid_to_string(oid),
 830                                    le32_to_cpu(u.get_c->status), ret);
 831         }
 832
 833 exit_unlock:
 834         mutex_unlock(&priv->command_lock);
 835
 836         if (u.buf != priv->command_buffer)
 837                 kfree(u.buf);
 838         return ret;
 839 }
 840
 841 static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
 842                          int len)
 843 {
 844         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 845         union {
 846                 void                    *buf;
 847                 struct rndis_msg_hdr    *header;
 848                 struct rndis_set        *set;
 849                 struct rndis_set_c      *set_c;
 850         } u;
 851         int ret, buflen;
 852
 853         buflen = len + sizeof(*u.set);
 854         if (buflen < CONTROL_BUFFER_SIZE)
 855                 buflen = CONTROL_BUFFER_SIZE;
 856
 857         if (buflen > COMMAND_BUFFER_SIZE) {
 858                 u.buf = kmalloc(buflen, GFP_KERNEL);
 859                 if (!u.buf)
 860                         return -ENOMEM;
 861         } else {
 862                 u.buf = priv->command_buffer;
 863         }
 864
 865         mutex_lock(&priv->command_lock);
 866
 867         memset(u.set, 0, sizeof *u.set);
 868         u.set->msg_type = RNDIS_MSG_SET;
 869         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 870         u.set->oid = oid;
 871         u.set->len = cpu_to_le32(len);
 872         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 873         u.set->handle = cpu_to_le32(0);
 874         memcpy(u.buf + sizeof(*u.set), data, len);
 875
 876         priv->current_command_oid = oid;
 877         ret = rndis_command(dev, u.header, buflen);
 878         priv->current_command_oid = 0;
 879         if (ret < 0)
 880                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 881                            __func__, oid_to_string(oid), ret,
 882                            le32_to_cpu(u.set_c->status));
 883
 884         if (ret == 0) {
 885                 ret = rndis_error_status(u.set_c->status);
 886
 887                 if (ret < 0)
 888                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 889                                    __func__, oid_to_string(oid),
 890                                    le32_to_cpu(u.set_c->status), ret);
 891         }
 892
 893         mutex_unlock(&priv->command_lock);
 894
 895         if (u.buf != priv->command_buffer)
 896                 kfree(u.buf);
 897         return ret;
 898 }
 899
 900 static int rndis_reset(struct usbnet *usbdev)
 901 {
 902         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 903         struct rndis_reset *reset;
 904         int ret;
 905
 906         mutex_lock(&priv->command_lock);
 907
 908         reset = (void *)priv->command_buffer;
 909         memset(reset, 0, sizeof(*reset));
 910         reset->msg_type = RNDIS_MSG_RESET;
 911         reset->msg_len = cpu_to_le32(sizeof(*reset));
 912         priv->current_command_oid = 0;
 913         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 914
 915         mutex_unlock(&priv->command_lock);
 916
 917         if (ret < 0)
 918                 return ret;
 919         return 0;
 920 }
 921
 922 /*
 923  * Specs say that we can only set config parameters only soon after device
 924  * initialization.
 925  *   value_type: 0 = u32, 2 = unicode string
 926  */
 927 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 928                                                 int value_type, void *value)
 929 {
 930         struct ndis_config_param *infobuf;
 931         int value_len, info_len, param_len, ret, i;
 932         __le16 *unibuf;
 933         __le32 *dst_value;
 934
 935         if (value_type == 0)
 936                 value_len = sizeof(__le32);
 937         else if (value_type == 2)
 938                 value_len = strlen(value) * sizeof(__le16);
 939         else
 940                 return -EINVAL;
 941
 942         param_len = strlen(param) * sizeof(__le16);
 943         info_len = sizeof(*infobuf) + param_len + value_len;
 944
 945 #ifdef DEBUG
 946         info_len += 12;
 947 #endif
 948         infobuf = kmalloc(info_len, GFP_KERNEL);
 949         if (!infobuf)
 950                 return -ENOMEM;
 951
 952 #ifdef DEBUG
 953         info_len -= 12;
 954         /* extra 12 bytes are for padding (debug output) */
 955         memset(infobuf, 0xCC, info_len + 12);
 956 #endif
 957
 958         if (value_type == 2)
 959                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 960                            param, (u8 *)value);
 961         else
 962                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 963                            param, *(u32 *)value);
 964
 965         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 966         infobuf->name_length = cpu_to_le32(param_len);
 967         infobuf->type = cpu_to_le32(value_type);
 968         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 969         infobuf->value_length = cpu_to_le32(value_len);
 970
 971         /* simple string to unicode string conversion */
 972         unibuf = (void *)infobuf + sizeof(*infobuf);
 973         for (i = 0; i < param_len / sizeof(__le16); i++)
 974                 unibuf[i] = cpu_to_le16(param[i]);
 975
 976         if (value_type == 2) {
 977                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 978                 for (i = 0; i < value_len / sizeof(__le16); i++)
 979                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 980         } else {
 981                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 982                 *dst_value = cpu_to_le32(*(u32 *)value);
 983         }
 984
 985 #ifdef DEBUG
 986         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 987         for (i = 0; i < info_len; i += 12) {
 988                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
 989                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 990                            cpu_to_be32(tmp[0]),
 991                            cpu_to_be32(tmp[1]),
 992                            cpu_to_be32(tmp[2]));
 993         }
 994 #endif
 995
 996         ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
 997                                                         infobuf, info_len);
 998         if (ret != 0)
 999                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
1000                            ret);
1001
1002         kfree(infobuf);
1003         return ret;
1004 }
1005
1006 static int rndis_set_config_parameter_str(struct usbnet *dev,
1007                                                 char *param, char *value)
1008 {
1009         return rndis_set_config_parameter(dev, param, 2, value);
1010 }
1011
1012 /*
1013  * data conversion functions
1014  */
1015 static int level_to_qual(int level)
1016 {
1017         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
1018         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
1019 }
1020
1021 /*
1022  * common functions
1023  */
1024 static int set_infra_mode(struct usbnet *usbdev, int mode);
1025 static void restore_keys(struct usbnet *usbdev);
1026 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1027                                         bool *matched);
1028
1029 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1030 {
1031         __le32 tmp;
1032
1033         /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1034         tmp = cpu_to_le32(1);
1035         return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1036                                                         sizeof(tmp));
1037 }
1038
1039 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1040 {
1041         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1042         int ret;
1043
1044         ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1045         if (ret < 0) {
1046                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1047                 return ret;
1048         }
1049         if (ret == 0) {
1050                 priv->radio_on = true;
1051                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1052         }
1053
1054         return ret;
1055 }
1056
1057 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1058 {
1059         int ret;
1060
1061         ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1062         if (ret < 0) {
1063                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1064                             bssid, ret);
1065                 return ret;
1066         }
1067
1068         return ret;
1069 }
1070
1071 static int clear_bssid(struct usbnet *usbdev)
1072 {
1073         static const u8 broadcast_mac[ETH_ALEN] = {
1074                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1075         };
1076
1077         return set_bssid(usbdev, broadcast_mac);
1078 }
1079
1080 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1081 {
1082         int ret, len;
1083
1084         len = ETH_ALEN;
1085         ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1086
1087         if (ret != 0)
1088                 memset(bssid, 0, ETH_ALEN);
1089
1090         return ret;
1091 }
1092
1093 static int get_association_info(struct usbnet *usbdev,
1094                         struct ndis_80211_assoc_info *info, int len)
1095 {
1096         return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1097                                 info, &len);
1098 }
1099
1100 static bool is_associated(struct usbnet *usbdev)
1101 {
1102         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1103         u8 bssid[ETH_ALEN];
1104         int ret;
1105
1106         if (!priv->radio_on)
1107                 return false;
1108
1109         ret = get_bssid(usbdev, bssid);
1110
1111         return (ret == 0 && !is_zero_ether_addr(bssid));
1112 }
1113
1114 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1115 {
1116         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1117         struct ndis_80211_ssid ssid;
1118         int i, ret = 0;
1119
1120         if (priv->radio_on) {
1121                 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1122                 if (ret == 0) {
1123                         priv->radio_on = false;
1124                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1125                                    __func__);
1126
1127                         if (reset_ssid)
1128                                 msleep(100);
1129                 }
1130         }
1131
1132         /* disassociate causes radio to be turned off; if reset_ssid
1133          * is given, set random ssid to enable radio */
1134         if (reset_ssid) {
1135                 /* Set device to infrastructure mode so we don't get ad-hoc
1136                  * 'media connect' indications with the random ssid.
1137                  */
1138                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1139
1140                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1141                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1142                 ssid.essid[0] = 0x1;
1143                 ssid.essid[1] = 0xff;
1144                 for (i = 2; i < sizeof(ssid.essid); i++)
1145                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1146                 ret = set_essid(usbdev, &ssid);
1147         }
1148         return ret;
1149 }
1150
1151 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1152                                 enum nl80211_auth_type auth_type, int keymgmt)
1153 {
1154         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155         __le32 tmp;
1156         int auth_mode, ret;
1157
1158         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1159                    __func__, wpa_version, auth_type, keymgmt);
1160
1161         if (wpa_version & NL80211_WPA_VERSION_2) {
1162                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1163                         auth_mode = NDIS_80211_AUTH_WPA2;
1164                 else
1165                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1166         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1167                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1168                         auth_mode = NDIS_80211_AUTH_WPA;
1169                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1170                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1171                 else
1172                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1173         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1174                 auth_mode = NDIS_80211_AUTH_SHARED;
1175         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1176                 auth_mode = NDIS_80211_AUTH_OPEN;
1177         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1178                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1179         else
1180                 return -ENOTSUPP;
1181
1182         tmp = cpu_to_le32(auth_mode);
1183         ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1184                                                                 sizeof(tmp));
1185         if (ret != 0) {
1186                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1187                             ret);
1188                 return ret;
1189         }
1190
1191         priv->wpa_version = wpa_version;
1192
1193         return 0;
1194 }
1195
1196 static int set_priv_filter(struct usbnet *usbdev)
1197 {
1198         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1199         __le32 tmp;
1200
1201         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1202                    __func__, priv->wpa_version);
1203
1204         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1205             priv->wpa_version & NL80211_WPA_VERSION_1)
1206                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1207         else
1208                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1209
1210         return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1211                                                                 sizeof(tmp));
1212 }
1213
1214 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1215 {
1216         __le32 tmp;
1217         int encr_mode, ret;
1218
1219         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1220                    __func__, pairwise, groupwise);
1221
1222         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1223                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1224         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1225                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1226         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1227                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1228         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1229                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1230         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1231                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1232         else
1233                 encr_mode = NDIS_80211_ENCR_DISABLED;
1234
1235         tmp = cpu_to_le32(encr_mode);
1236         ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1237                                                                 sizeof(tmp));
1238         if (ret != 0) {
1239                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1240                             ret);
1241                 return ret;
1242         }
1243
1244         return 0;
1245 }
1246
1247 static int set_infra_mode(struct usbnet *usbdev, int mode)
1248 {
1249         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1250         __le32 tmp;
1251         int ret;
1252
1253         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1254                    __func__, priv->infra_mode);
1255
1256         tmp = cpu_to_le32(mode);
1257         ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1258                                                                 sizeof(tmp));
1259         if (ret != 0) {
1260                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1261                             ret);
1262                 return ret;
1263         }
1264
1265         /* NDIS drivers clear keys when infrastructure mode is
1266          * changed. But Linux tools assume otherwise. So set the
1267          * keys */
1268         restore_keys(usbdev);
1269
1270         priv->infra_mode = mode;
1271         return 0;
1272 }
1273
1274 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1275 {
1276         __le32 tmp;
1277
1278         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1279
1280         if (rts_threshold < 0 || rts_threshold > 2347)
1281                 rts_threshold = 2347;
1282
1283         tmp = cpu_to_le32(rts_threshold);
1284         return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1285                                                                 sizeof(tmp));
1286 }
1287
1288 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1289 {
1290         __le32 tmp;
1291
1292         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1293
1294         if (frag_threshold < 256 || frag_threshold > 2346)
1295                 frag_threshold = 2346;
1296
1297         tmp = cpu_to_le32(frag_threshold);
1298         return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1299                                                                 sizeof(tmp));
1300 }
1301
1302 static void set_default_iw_params(struct usbnet *usbdev)
1303 {
1304         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1305         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1306                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1307         set_priv_filter(usbdev);
1308         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1309 }
1310
1311 static int deauthenticate(struct usbnet *usbdev)
1312 {
1313         int ret;
1314
1315         ret = disassociate(usbdev, true);
1316         set_default_iw_params(usbdev);
1317         return ret;
1318 }
1319
1320 static int set_channel(struct usbnet *usbdev, int channel)
1321 {
1322         struct ndis_80211_conf config;
1323         unsigned int dsconfig;
1324         int len, ret;
1325
1326         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1327
1328         /* this OID is valid only when not associated */
1329         if (is_associated(usbdev))
1330                 return 0;
1331
1332         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1333
1334         len = sizeof(config);
1335         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1336         if (ret < 0) {
1337                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1338                            __func__);
1339                 return ret;
1340         }
1341
1342         config.ds_config = cpu_to_le32(dsconfig);
1343         ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1344                                                                 sizeof(config));
1345
1346         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1347
1348         return ret;
1349 }
1350
1351 /* index must be 0 - N, as per NDIS  */
1352 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1353                                                                 int index)
1354 {
1355         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1356         struct ndis_80211_wep_key ndis_key;
1357         u32 cipher;
1358         int ret;
1359
1360         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1361                    __func__, index, key_len);
1362
1363         if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1364                 return -EINVAL;
1365
1366         if (key_len == 5)
1367                 cipher = WLAN_CIPHER_SUITE_WEP40;
1368         else
1369                 cipher = WLAN_CIPHER_SUITE_WEP104;
1370
1371         memset(&ndis_key, 0, sizeof(ndis_key));
1372
1373         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1374         ndis_key.length = cpu_to_le32(key_len);
1375         ndis_key.index = cpu_to_le32(index);
1376         memcpy(&ndis_key.material, key, key_len);
1377
1378         if (index == priv->encr_tx_key_index) {
1379                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1380                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1381                                                         RNDIS_WLAN_ALG_NONE);
1382                 if (ret)
1383                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1384                                     ret);
1385         }
1386
1387         ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1388                                                         sizeof(ndis_key));
1389         if (ret != 0) {
1390                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1391                             index + 1, ret);
1392                 return ret;
1393         }
1394
1395         priv->encr_keys[index].len = key_len;
1396         priv->encr_keys[index].cipher = cipher;
1397         memcpy(&priv->encr_keys[index].material, key, key_len);
1398         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1399
1400         return 0;
1401 }
1402
1403 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1404                         int index, const u8 *addr, const u8 *rx_seq,
1405                         int seq_len, u32 cipher, __le32 flags)
1406 {
1407         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1408         struct ndis_80211_key ndis_key;
1409         bool is_addr_ok;
1410         int ret;
1411
1412         if (index < 0 || index >= 4) {
1413                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1414                            __func__, index);
1415                 return -EINVAL;
1416         }
1417         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1418                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1419                            __func__, key_len);
1420                 return -EINVAL;
1421         }
1422         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1423                 if (!rx_seq || seq_len <= 0) {
1424                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1425                                    __func__);
1426                         return -EINVAL;
1427                 }
1428                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1429                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1430                         return -EINVAL;
1431                 }
1432         }
1433
1434         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1435                                         !is_broadcast_ether_addr(addr);
1436         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1437                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1438                            __func__, addr);
1439                 return -EINVAL;
1440         }
1441
1442         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1443                    __func__, index,
1444                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1445                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1446                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1447
1448         memset(&ndis_key, 0, sizeof(ndis_key));
1449
1450         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1451                                 sizeof(ndis_key.material) + key_len);
1452         ndis_key.length = cpu_to_le32(key_len);
1453         ndis_key.index = cpu_to_le32(index) | flags;
1454
1455         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1456                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1457                  * different order than NDIS spec, so swap the order here. */
1458                 memcpy(ndis_key.material, key, 16);
1459                 memcpy(ndis_key.material + 16, key + 24, 8);
1460                 memcpy(ndis_key.material + 24, key + 16, 8);
1461         } else
1462                 memcpy(ndis_key.material, key, key_len);
1463
1464         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1465                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1466
1467         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1468                 /* pairwise key */
1469                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1470         } else {
1471                 /* group key */
1472                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1473                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1474                 else
1475                         get_bssid(usbdev, ndis_key.bssid);
1476         }
1477
1478         ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1479                                         le32_to_cpu(ndis_key.size));
1480         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1481                    __func__, ret);
1482         if (ret != 0)
1483                 return ret;
1484
1485         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1486         priv->encr_keys[index].len = key_len;
1487         priv->encr_keys[index].cipher = cipher;
1488         memcpy(&priv->encr_keys[index].material, key, key_len);
1489         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1490                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1491         else
1492                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1493
1494         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1495                 priv->encr_tx_key_index = index;
1496
1497         return 0;
1498 }
1499
1500 static int restore_key(struct usbnet *usbdev, int key_idx)
1501 {
1502         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1503         struct rndis_wlan_encr_key key;
1504
1505         if (is_wpa_key(priv, key_idx))
1506                 return 0;
1507
1508         key = priv->encr_keys[key_idx];
1509
1510         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1511
1512         if (key.len == 0)
1513                 return 0;
1514
1515         return add_wep_key(usbdev, key.material, key.len, key_idx);
1516 }
1517
1518 static void restore_keys(struct usbnet *usbdev)
1519 {
1520         int i;
1521
1522         for (i = 0; i < 4; i++)
1523                 restore_key(usbdev, i);
1524 }
1525
1526 static void clear_key(struct rndis_wlan_private *priv, int idx)
1527 {
1528         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1529 }
1530
1531 /* remove_key is for both wep and wpa */
1532 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1533 {
1534         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1535         struct ndis_80211_remove_key remove_key;
1536         __le32 keyindex;
1537         bool is_wpa;
1538         int ret;
1539
1540         if (priv->encr_keys[index].len == 0)
1541                 return 0;
1542
1543         is_wpa = is_wpa_key(priv, index);
1544
1545         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1546                    __func__, index, is_wpa ? "wpa" : "wep",
1547                    priv->encr_keys[index].len);
1548
1549         clear_key(priv, index);
1550
1551         if (is_wpa) {
1552                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1553                 remove_key.index = cpu_to_le32(index);
1554                 if (bssid) {
1555                         /* pairwise key */
1556                         if (!is_broadcast_ether_addr(bssid))
1557                                 remove_key.index |=
1558                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1559                         memcpy(remove_key.bssid, bssid,
1560                                         sizeof(remove_key.bssid));
1561                 } else
1562                         memset(remove_key.bssid, 0xff,
1563                                                 sizeof(remove_key.bssid));
1564
1565                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1566                                                         sizeof(remove_key));
1567                 if (ret != 0)
1568                         return ret;
1569         } else {
1570                 keyindex = cpu_to_le32(index);
1571                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1572                                                         sizeof(keyindex));
1573                 if (ret != 0) {
1574                         netdev_warn(usbdev->net,
1575                                     "removing encryption key %d failed (%08X)\n",
1576                                     index, ret);
1577                         return ret;
1578                 }
1579         }
1580
1581         /* if it is transmit key, disable encryption */
1582         if (index == priv->encr_tx_key_index)
1583                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1584
1585         return 0;
1586 }
1587
1588 static void set_multicast_list(struct usbnet *usbdev)
1589 {
1590         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1591         struct netdev_hw_addr *ha;
1592         __le32 filter, basefilter;
1593         int ret;
1594         char *mc_addrs = NULL;
1595         int mc_count;
1596
1597         basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1598                               RNDIS_PACKET_TYPE_BROADCAST;
1599
1600         if (usbdev->net->flags & IFF_PROMISC) {
1601                 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1602                         RNDIS_PACKET_TYPE_ALL_LOCAL;
1603         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1604                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1605         }
1606
1607         if (filter != basefilter)
1608                 goto set_filter;
1609
1610         /*
1611          * mc_list should be accessed holding the lock, so copy addresses to
1612          * local buffer first.
1613          */
1614         netif_addr_lock_bh(usbdev->net);
1615         mc_count = netdev_mc_count(usbdev->net);
1616         if (mc_count > priv->multicast_size) {
1617                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1618         } else if (mc_count) {
1619                 int i = 0;
1620
1621                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1622                 if (!mc_addrs) {
1623                         netdev_warn(usbdev->net,
1624                                     "couldn't alloc %d bytes of memory\n",
1625                                     mc_count * ETH_ALEN);
1626                         netif_addr_unlock_bh(usbdev->net);
1627                         return;
1628                 }
1629
1630                 netdev_for_each_mc_addr(ha, usbdev->net)
1631                         memcpy(mc_addrs + i++ * ETH_ALEN,
1632                                ha->addr, ETH_ALEN);
1633         }
1634         netif_addr_unlock_bh(usbdev->net);
1635
1636         if (filter != basefilter)
1637                 goto set_filter;
1638
1639         if (mc_count) {
1640                 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1641                                     mc_count * ETH_ALEN);
1642                 kfree(mc_addrs);
1643                 if (ret == 0)
1644                         filter |= RNDIS_PACKET_TYPE_MULTICAST;
1645                 else
1646                         filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1647
1648                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1649                            mc_count, priv->multicast_size, ret);
1650         }
1651
1652 set_filter:
1653         ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1654                                                         sizeof(filter));
1655         if (ret < 0) {
1656                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1657                             le32_to_cpu(filter));
1658         }
1659
1660         netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1661                    le32_to_cpu(filter), ret);
1662 }
1663
1664 #ifdef DEBUG
1665 static void debug_print_pmkids(struct usbnet *usbdev,
1666                                 struct ndis_80211_pmkid *pmkids,
1667                                 const char *func_str)
1668 {
1669         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1670         int i, len, count, max_pmkids, entry_len;
1671
1672         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1673         len = le32_to_cpu(pmkids->length);
1674         count = le32_to_cpu(pmkids->bssid_info_count);
1675
1676         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1677
1678         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1679                                 "%d)\n", func_str, count, len, entry_len);
1680
1681         if (count > max_pmkids)
1682                 count = max_pmkids;
1683
1684         for (i = 0; i < count; i++) {
1685                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1686
1687                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1688                                 "pmkid: %08X:%08X:%08X:%08X\n",
1689                                 func_str, pmkids->bssid_info[i].bssid,
1690                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1691                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1692         }
1693 }
1694 #else
1695 static void debug_print_pmkids(struct usbnet *usbdev,
1696                                 struct ndis_80211_pmkid *pmkids,
1697                                 const char *func_str)
1698 {
1699         return;
1700 }
1701 #endif
1702
1703 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1704 {
1705         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1706         struct ndis_80211_pmkid *pmkids;
1707         int len, ret, max_pmkids;
1708
1709         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1710         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1711
1712         pmkids = kzalloc(len, GFP_KERNEL);
1713         if (!pmkids)
1714                 return ERR_PTR(-ENOMEM);
1715
1716         pmkids->length = cpu_to_le32(len);
1717         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1718
1719         ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1720         if (ret < 0) {
1721                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1722                                 " -> %d\n", __func__, len, max_pmkids, ret);
1723
1724                 kfree(pmkids);
1725                 return ERR_PTR(ret);
1726         }
1727
1728         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1729                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1730
1731         debug_print_pmkids(usbdev, pmkids, __func__);
1732
1733         return pmkids;
1734 }
1735
1736 static int set_device_pmkids(struct usbnet *usbdev,
1737                                 struct ndis_80211_pmkid *pmkids)
1738 {
1739         int ret, len, num_pmkids;
1740
1741         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1742         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1743         pmkids->length = cpu_to_le32(len);
1744
1745         debug_print_pmkids(usbdev, pmkids, __func__);
1746
1747         ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1748                                                 le32_to_cpu(pmkids->length));
1749         if (ret < 0) {
1750                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1751                                 "\n", __func__, len, num_pmkids, ret);
1752         }
1753
1754         kfree(pmkids);
1755         return ret;
1756 }
1757
1758 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1759                                                 struct ndis_80211_pmkid *pmkids,
1760                                                 struct cfg80211_pmksa *pmksa,
1761                                                 int max_pmkids)
1762 {
1763         int i, len, count, newlen, err;
1764
1765         len = le32_to_cpu(pmkids->length);
1766         count = le32_to_cpu(pmkids->bssid_info_count);
1767
1768         if (count > max_pmkids)
1769                 count = max_pmkids;
1770
1771         for (i = 0; i < count; i++)
1772                 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1773                                                         pmksa->bssid))
1774                         break;
1775
1776         /* pmkid not found */
1777         if (i == count) {
1778                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1779                                         __func__, pmksa->bssid);
1780                 err = -ENOENT;
1781                 goto error;
1782         }
1783
1784         for (; i + 1 < count; i++)
1785                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1786
1787         count--;
1788         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1789
1790         pmkids->length = cpu_to_le32(newlen);
1791         pmkids->bssid_info_count = cpu_to_le32(count);
1792
1793         return pmkids;
1794 error:
1795         kfree(pmkids);
1796         return ERR_PTR(err);
1797 }
1798
1799 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1800                                                 struct ndis_80211_pmkid *pmkids,
1801                                                 struct cfg80211_pmksa *pmksa,
1802                                                 int max_pmkids)
1803 {
1804         int i, err, len, count, newlen;
1805
1806         len = le32_to_cpu(pmkids->length);
1807         count = le32_to_cpu(pmkids->bssid_info_count);
1808
1809         if (count > max_pmkids)
1810                 count = max_pmkids;
1811
1812         /* update with new pmkid */
1813         for (i = 0; i < count; i++) {
1814                 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1815                                                         pmksa->bssid))
1816                         continue;
1817
1818                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1819                                                                 WLAN_PMKID_LEN);
1820
1821                 return pmkids;
1822         }
1823
1824         /* out of space, return error */
1825         if (i == max_pmkids) {
1826                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1827                 err = -ENOSPC;
1828                 goto error;
1829         }
1830
1831         /* add new pmkid */
1832         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1833
1834         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1835         if (!pmkids) {
1836                 err = -ENOMEM;
1837                 goto error;
1838         }
1839
1840         pmkids->length = cpu_to_le32(newlen);
1841         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1842
1843         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1844         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1845
1846         return pmkids;
1847 error:
1848         kfree(pmkids);
1849         return ERR_PTR(err);
1850 }
1851
1852 /*
1853  * cfg80211 ops
1854  */
1855 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1856                                         struct net_device *dev,
1857                                         enum nl80211_iftype type, u32 *flags,
1858                                         struct vif_params *params)
1859 {
1860         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1861         struct usbnet *usbdev = priv->usbdev;
1862         int mode;
1863
1864         switch (type) {
1865         case NL80211_IFTYPE_ADHOC:
1866                 mode = NDIS_80211_INFRA_ADHOC;
1867                 break;
1868         case NL80211_IFTYPE_STATION:
1869                 mode = NDIS_80211_INFRA_INFRA;
1870                 break;
1871         default:
1872                 return -EINVAL;
1873         }
1874
1875         priv->wdev.iftype = type;
1876
1877         return set_infra_mode(usbdev, mode);
1878 }
1879
1880 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1881 {
1882         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1883         struct usbnet *usbdev = priv->usbdev;
1884         int err;
1885
1886         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1887                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1888                 if (err < 0)
1889                         return err;
1890         }
1891
1892         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1893                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1894                 if (err < 0)
1895                         return err;
1896         }
1897
1898         return 0;
1899 }
1900
1901 static int rndis_set_tx_power(struct wiphy *wiphy,
1902                               enum nl80211_tx_power_setting type,
1903                               int mbm)
1904 {
1905         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1906         struct usbnet *usbdev = priv->usbdev;
1907
1908         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1909                    __func__, type, mbm);
1910
1911         if (mbm < 0 || (mbm % 100))
1912                 return -ENOTSUPP;
1913
1914         /* Device doesn't support changing txpower after initialization, only
1915          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1916          * currently used.
1917          */
1918         if (type == NL80211_TX_POWER_AUTOMATIC ||
1919             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1920                 if (!priv->radio_on)
1921                         disassociate(usbdev, true); /* turn on radio */
1922
1923                 return 0;
1924         }
1925
1926         return -ENOTSUPP;
1927 }
1928
1929 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1930 {
1931         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1932         struct usbnet *usbdev = priv->usbdev;
1933
1934         *dbm = get_bcm4320_power_dbm(priv);
1935
1936         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1937
1938         return 0;
1939 }
1940
1941 #define SCAN_DELAY_JIFFIES (6 * HZ)
1942 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1943                         struct cfg80211_scan_request *request)
1944 {
1945         struct usbnet *usbdev = netdev_priv(dev);
1946         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1947         int ret;
1948         int delay = SCAN_DELAY_JIFFIES;
1949
1950         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1951
1952         /* Get current bssid list from device before new scan, as new scan
1953          * clears internal bssid list.
1954          */
1955         rndis_check_bssid_list(usbdev, NULL, NULL);
1956
1957         if (!request)
1958                 return -EINVAL;
1959
1960         if (priv->scan_request && priv->scan_request != request)
1961                 return -EBUSY;
1962
1963         priv->scan_request = request;
1964
1965         ret = rndis_start_bssid_list_scan(usbdev);
1966         if (ret == 0) {
1967                 if (priv->device_type == RNDIS_BCM4320A)
1968                         delay = HZ;
1969
1970                 /* Wait before retrieving scan results from device */
1971                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1972         }
1973
1974         return ret;
1975 }
1976
1977 static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1978                                         struct ndis_80211_bssid_ex *bssid)
1979 {
1980         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1981         struct ieee80211_channel *channel;
1982         s32 signal;
1983         u64 timestamp;
1984         u16 capability;
1985         u16 beacon_interval;
1986         struct ndis_80211_fixed_ies *fixed;
1987         int ie_len, bssid_len;
1988         u8 *ie;
1989
1990         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1991                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1992
1993         /* parse bssid structure */
1994         bssid_len = le32_to_cpu(bssid->length);
1995
1996         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1997                         sizeof(struct ndis_80211_fixed_ies))
1998                 return NULL;
1999
2000         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2001
2002         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2003         ie_len = min(bssid_len - (int)sizeof(*bssid),
2004                                         (int)le32_to_cpu(bssid->ie_length));
2005         ie_len -= sizeof(struct ndis_80211_fixed_ies);
2006         if (ie_len < 0)
2007                 return NULL;
2008
2009         /* extract data for cfg80211_inform_bss */
2010         channel = ieee80211_get_channel(priv->wdev.wiphy,
2011                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2012         if (!channel)
2013                 return NULL;
2014
2015         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2016         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2017         capability = le16_to_cpu(fixed->capabilities);
2018         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2019
2020         return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2021                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2022                 GFP_KERNEL);
2023 }
2024
2025 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2026                                         struct ndis_80211_bssid_ex *bssid,
2027                                         int *bssid_len, void *buf, int len)
2028 {
2029         void *buf_end, *bssid_end;
2030
2031         buf_end = (char *)buf + len;
2032         bssid_end = (char *)bssid + *bssid_len;
2033
2034         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2035                 *bssid_len = 0;
2036                 return NULL;
2037         } else {
2038                 bssid = (void *)((char *)bssid + *bssid_len);
2039                 *bssid_len = le32_to_cpu(bssid->length);
2040                 return bssid;
2041         }
2042 }
2043
2044 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2045                                   int bssid_len, void *buf, int len)
2046 {
2047         void *buf_end, *bssid_end;
2048
2049         if (!bssid || bssid_len <= 0 || bssid_len > len)
2050                 return false;
2051
2052         buf_end = (char *)buf + len;
2053         bssid_end = (char *)bssid + bssid_len;
2054
2055         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2056 }
2057
2058 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2059                                         bool *matched)
2060 {
2061         void *buf = NULL;
2062         struct ndis_80211_bssid_list_ex *bssid_list;
2063         struct ndis_80211_bssid_ex *bssid;
2064         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2065
2066         netdev_dbg(usbdev->net, "%s()\n", __func__);
2067
2068         len = CONTROL_BUFFER_SIZE;
2069 resize_buf:
2070         buf = kzalloc(len, GFP_KERNEL);
2071         if (!buf) {
2072                 ret = -ENOMEM;
2073                 goto out;
2074         }
2075
2076         /* BSSID-list might have got bigger last time we checked, keep
2077          * resizing until it won't get any bigger.
2078          */
2079         new_len = len;
2080         ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2081         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2082                 goto out;
2083
2084         if (new_len > len) {
2085                 len = new_len;
2086                 kfree(buf);
2087                 goto resize_buf;
2088         }
2089
2090         len = new_len;
2091
2092         bssid_list = buf;
2093         count = le32_to_cpu(bssid_list->num_items);
2094         real_count = 0;
2095         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2096
2097         bssid_len = 0;
2098         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2099
2100         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2101          * received 'num_items' and walking through full bssid buffer instead.
2102          */
2103         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2104                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2105                     matched) {
2106                         if (compare_ether_addr(bssid->mac, match_bssid))
2107                                 *matched = true;
2108                 }
2109
2110                 real_count++;
2111                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2112         }
2113
2114         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2115                                 " %d\n", __func__, count, real_count);
2116
2117 out:
2118         kfree(buf);
2119         return ret;
2120 }
2121
2122 static void rndis_get_scan_results(struct work_struct *work)
2123 {
2124         struct rndis_wlan_private *priv =
2125                 container_of(work, struct rndis_wlan_private, scan_work.work);
2126         struct usbnet *usbdev = priv->usbdev;
2127         int ret;
2128
2129         netdev_dbg(usbdev->net, "get_scan_results\n");
2130
2131         if (!priv->scan_request)
2132                 return;
2133
2134         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2135
2136         cfg80211_scan_done(priv->scan_request, ret < 0);
2137
2138         priv->scan_request = NULL;
2139 }
2140
2141 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2142                                         struct cfg80211_connect_params *sme)
2143 {
2144         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2145         struct usbnet *usbdev = priv->usbdev;
2146         struct ieee80211_channel *channel = sme->channel;
2147         struct ndis_80211_ssid ssid;
2148         int pairwise = RNDIS_WLAN_ALG_NONE;
2149         int groupwise = RNDIS_WLAN_ALG_NONE;
2150         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2151         int length, i, ret, chan = -1;
2152
2153         if (channel)
2154                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2155
2156         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2157         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2158                 pairwise |=
2159                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2160
2161         if (sme->crypto.n_ciphers_pairwise > 0 &&
2162                         pairwise == RNDIS_WLAN_ALG_NONE) {
2163                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2164                 return -ENOTSUPP;
2165         }
2166
2167         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2168                 keymgmt |=
2169                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2170
2171         if (sme->crypto.n_akm_suites > 0 &&
2172                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2173                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2174                 return -ENOTSUPP;
2175         }
2176
2177         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2178                    sme->ssid, sme->bssid, chan,
2179                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2180                    groupwise, pairwise, keymgmt);
2181
2182         if (is_associated(usbdev))
2183                 disassociate(usbdev, false);
2184
2185         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2186         if (ret < 0) {
2187                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2188                            ret);
2189                 goto err_turn_radio_on;
2190         }
2191
2192         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2193                                                                 keymgmt);
2194         if (ret < 0) {
2195                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2196                            ret);
2197                 goto err_turn_radio_on;
2198         }
2199
2200         set_priv_filter(usbdev);
2201
2202         ret = set_encr_mode(usbdev, pairwise, groupwise);
2203         if (ret < 0) {
2204                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2205                            ret);
2206                 goto err_turn_radio_on;
2207         }
2208
2209         if (channel) {
2210                 ret = set_channel(usbdev, chan);
2211                 if (ret < 0) {
2212                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2213                                    ret);
2214                         goto err_turn_radio_on;
2215                 }
2216         }
2217
2218         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2219                 priv->encr_tx_key_index = sme->key_idx;
2220                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2221                 if (ret < 0) {
2222                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2223                                    ret, sme->key_len, sme->key_idx);
2224                         goto err_turn_radio_on;
2225                 }
2226         }
2227
2228         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2229                                 !is_broadcast_ether_addr(sme->bssid)) {
2230                 ret = set_bssid(usbdev, sme->bssid);
2231                 if (ret < 0) {
2232                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2233                                    ret);
2234                         goto err_turn_radio_on;
2235                 }
2236         } else
2237                 clear_bssid(usbdev);
2238
2239         length = sme->ssid_len;
2240         if (length > NDIS_802_11_LENGTH_SSID)
2241                 length = NDIS_802_11_LENGTH_SSID;
2242
2243         memset(&ssid, 0, sizeof(ssid));
2244         ssid.length = cpu_to_le32(length);
2245         memcpy(ssid.essid, sme->ssid, length);
2246
2247         /* Pause and purge rx queue, so we don't pass packets before
2248          * 'media connect'-indication.
2249          */
2250         usbnet_pause_rx(usbdev);
2251         usbnet_purge_paused_rxq(usbdev);
2252
2253         ret = set_essid(usbdev, &ssid);
2254         if (ret < 0)
2255                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2256         return ret;
2257
2258 err_turn_radio_on:
2259         disassociate(usbdev, true);
2260
2261         return ret;
2262 }
2263
2264 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2265                                                                 u16 reason_code)
2266 {
2267         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2268         struct usbnet *usbdev = priv->usbdev;
2269
2270         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2271
2272         priv->connected = false;
2273         memset(priv->bssid, 0, ETH_ALEN);
2274
2275         return deauthenticate(usbdev);
2276 }
2277
2278 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2279                                         struct cfg80211_ibss_params *params)
2280 {
2281         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2282         struct usbnet *usbdev = priv->usbdev;
2283         struct ieee80211_channel *channel = params->channel;
2284         struct ndis_80211_ssid ssid;
2285         enum nl80211_auth_type auth_type;
2286         int ret, alg, length, chan = -1;
2287
2288         if (channel)
2289                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2290
2291         /* TODO: How to handle ad-hoc encryption?
2292          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2293          * pre-shared for encryption (open/shared/wpa), is key set before
2294          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2295          */
2296         if (params->privacy) {
2297                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2298                 alg = RNDIS_WLAN_ALG_WEP;
2299         } else {
2300                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2301                 alg = RNDIS_WLAN_ALG_NONE;
2302         }
2303
2304         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2305                    params->ssid, params->bssid, chan, params->privacy);
2306
2307         if (is_associated(usbdev))
2308                 disassociate(usbdev, false);
2309
2310         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2311         if (ret < 0) {
2312                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2313                            ret);
2314                 goto err_turn_radio_on;
2315         }
2316
2317         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2318         if (ret < 0) {
2319                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2320                            ret);
2321                 goto err_turn_radio_on;
2322         }
2323
2324         set_priv_filter(usbdev);
2325
2326         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2327         if (ret < 0) {
2328                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2329                            ret);
2330                 goto err_turn_radio_on;
2331         }
2332
2333         if (channel) {
2334                 ret = set_channel(usbdev, chan);
2335                 if (ret < 0) {
2336                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2337                                    ret);
2338                         goto err_turn_radio_on;
2339                 }
2340         }
2341
2342         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2343                                 !is_broadcast_ether_addr(params->bssid)) {
2344                 ret = set_bssid(usbdev, params->bssid);
2345                 if (ret < 0) {
2346                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2347                                    ret);
2348                         goto err_turn_radio_on;
2349                 }
2350         } else
2351                 clear_bssid(usbdev);
2352
2353         length = params->ssid_len;
2354         if (length > NDIS_802_11_LENGTH_SSID)
2355                 length = NDIS_802_11_LENGTH_SSID;
2356
2357         memset(&ssid, 0, sizeof(ssid));
2358         ssid.length = cpu_to_le32(length);
2359         memcpy(ssid.essid, params->ssid, length);
2360
2361         /* Don't need to pause rx queue for ad-hoc. */
2362         usbnet_purge_paused_rxq(usbdev);
2363         usbnet_resume_rx(usbdev);
2364
2365         ret = set_essid(usbdev, &ssid);
2366         if (ret < 0)
2367                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2368                            ret);
2369         return ret;
2370
2371 err_turn_radio_on:
2372         disassociate(usbdev, true);
2373
2374         return ret;
2375 }
2376
2377 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2378 {
2379         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2380         struct usbnet *usbdev = priv->usbdev;
2381
2382         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2383
2384         priv->connected = false;
2385         memset(priv->bssid, 0, ETH_ALEN);
2386
2387         return deauthenticate(usbdev);
2388 }
2389
2390 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2391         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2392 {
2393         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2394         struct usbnet *usbdev = priv->usbdev;
2395
2396         return set_channel(usbdev,
2397                         ieee80211_frequency_to_channel(chan->center_freq));
2398 }
2399
2400 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2401                          u8 key_index, bool pairwise, const u8 *mac_addr,
2402                          struct key_params *params)
2403 {
2404         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2405         struct usbnet *usbdev = priv->usbdev;
2406         __le32 flags;
2407
2408         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2409                    __func__, key_index, mac_addr, params->cipher);
2410
2411         switch (params->cipher) {
2412         case WLAN_CIPHER_SUITE_WEP40:
2413         case WLAN_CIPHER_SUITE_WEP104:
2414                 return add_wep_key(usbdev, params->key, params->key_len,
2415                                                                 key_index);
2416         case WLAN_CIPHER_SUITE_TKIP:
2417         case WLAN_CIPHER_SUITE_CCMP:
2418                 flags = 0;
2419
2420                 if (params->seq && params->seq_len > 0)
2421                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2422                 if (mac_addr)
2423                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2424                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2425
2426                 return add_wpa_key(usbdev, params->key, params->key_len,
2427                                 key_index, mac_addr, params->seq,
2428                                 params->seq_len, params->cipher, flags);
2429         default:
2430                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2431                            __func__, params->cipher);
2432                 return -ENOTSUPP;
2433         }
2434 }
2435
2436 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2437                          u8 key_index, bool pairwise, const u8 *mac_addr)
2438 {
2439         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2440         struct usbnet *usbdev = priv->usbdev;
2441
2442         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2443
2444         return remove_key(usbdev, key_index, mac_addr);
2445 }
2446
2447 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2448                                  u8 key_index, bool unicast, bool multicast)
2449 {
2450         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2451         struct usbnet *usbdev = priv->usbdev;
2452         struct rndis_wlan_encr_key key;
2453
2454         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2455
2456         priv->encr_tx_key_index = key_index;
2457
2458         if (is_wpa_key(priv, key_index))
2459                 return 0;
2460
2461         key = priv->encr_keys[key_index];
2462
2463         return add_wep_key(usbdev, key.material, key.len, key_index);
2464 }
2465
2466 static void rndis_fill_station_info(struct usbnet *usbdev,
2467                                                 struct station_info *sinfo)
2468 {
2469         __le32 linkspeed, rssi;
2470         int ret, len;
2471
2472         memset(sinfo, 0, sizeof(*sinfo));
2473
2474         len = sizeof(linkspeed);
2475         ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2476         if (ret == 0) {
2477                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2478                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2479         }
2480
2481         len = sizeof(rssi);
2482         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2483         if (ret == 0) {
2484                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2485                 sinfo->filled |= STATION_INFO_SIGNAL;
2486         }
2487 }
2488
2489 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2490                                         u8 *mac, struct station_info *sinfo)
2491 {
2492         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2493         struct usbnet *usbdev = priv->usbdev;
2494
2495         if (compare_ether_addr(priv->bssid, mac))
2496                 return -ENOENT;
2497
2498         rndis_fill_station_info(usbdev, sinfo);
2499
2500         return 0;
2501 }
2502
2503 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2504                                int idx, u8 *mac, struct station_info *sinfo)
2505 {
2506         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2507         struct usbnet *usbdev = priv->usbdev;
2508
2509         if (idx != 0)
2510                 return -ENOENT;
2511
2512         memcpy(mac, priv->bssid, ETH_ALEN);
2513
2514         rndis_fill_station_info(usbdev, sinfo);
2515
2516         return 0;
2517 }
2518
2519 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2520                                 struct cfg80211_pmksa *pmksa)
2521 {
2522         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2523         struct usbnet *usbdev = priv->usbdev;
2524         struct ndis_80211_pmkid *pmkids;
2525         u32 *tmp = (u32 *)pmksa->pmkid;
2526
2527         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2528                         pmksa->bssid,
2529                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2530                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2531
2532         pmkids = get_device_pmkids(usbdev);
2533         if (IS_ERR(pmkids)) {
2534                 /* couldn't read PMKID cache from device */
2535                 return PTR_ERR(pmkids);
2536         }
2537
2538         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2539         if (IS_ERR(pmkids)) {
2540                 /* not found, list full, etc */
2541                 return PTR_ERR(pmkids);
2542         }
2543
2544         return set_device_pmkids(usbdev, pmkids);
2545 }
2546
2547 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2548                                 struct cfg80211_pmksa *pmksa)
2549 {
2550         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2551         struct usbnet *usbdev = priv->usbdev;
2552         struct ndis_80211_pmkid *pmkids;
2553         u32 *tmp = (u32 *)pmksa->pmkid;
2554
2555         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2556                         pmksa->bssid,
2557                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2558                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2559
2560         pmkids = get_device_pmkids(usbdev);
2561         if (IS_ERR(pmkids)) {
2562                 /* Couldn't read PMKID cache from device */
2563                 return PTR_ERR(pmkids);
2564         }
2565
2566         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2567         if (IS_ERR(pmkids)) {
2568                 /* not found, etc */
2569                 return PTR_ERR(pmkids);
2570         }
2571
2572         return set_device_pmkids(usbdev, pmkids);
2573 }
2574
2575 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2576 {
2577         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2578         struct usbnet *usbdev = priv->usbdev;
2579         struct ndis_80211_pmkid pmkid;
2580
2581         netdev_dbg(usbdev->net, "%s()\n", __func__);
2582
2583         memset(&pmkid, 0, sizeof(pmkid));
2584
2585         pmkid.length = cpu_to_le32(sizeof(pmkid));
2586         pmkid.bssid_info_count = cpu_to_le32(0);
2587
2588         return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2589 }
2590
2591 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2592                                 bool enabled, int timeout)
2593 {
2594         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2595         struct usbnet *usbdev = priv->usbdev;
2596         int power_mode;
2597         __le32 mode;
2598         int ret;
2599
2600         if (priv->device_type != RNDIS_BCM4320B)
2601                 return -ENOTSUPP;
2602
2603         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2604                                 enabled ? "enabled" : "disabled",
2605                                 timeout);
2606
2607         if (enabled)
2608                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2609         else
2610                 power_mode = NDIS_80211_POWER_MODE_CAM;
2611
2612         if (power_mode == priv->power_mode)
2613                 return 0;
2614
2615         priv->power_mode = power_mode;
2616
2617         mode = cpu_to_le32(power_mode);
2618         ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2619
2620         netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2621                                 __func__, ret);
2622
2623         return ret;
2624 }
2625
2626 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2627                                         struct net_device *dev,
2628                                         s32 rssi_thold, u32 rssi_hyst)
2629 {
2630         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2631
2632         priv->cqm_rssi_thold = rssi_thold;
2633         priv->cqm_rssi_hyst = rssi_hyst;
2634         priv->last_cqm_event_rssi = 0;
2635
2636         return 0;
2637 }
2638
2639 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2640                                            struct ndis_80211_assoc_info *info)
2641 {
2642         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2643         struct ieee80211_channel *channel;
2644         struct ndis_80211_conf config;
2645         struct ndis_80211_ssid ssid;
2646         s32 signal;
2647         u64 timestamp;
2648         u16 capability;
2649         u16 beacon_interval;
2650         __le32 rssi;
2651         u8 ie_buf[34];
2652         int len, ret, ie_len;
2653
2654         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2655         len = sizeof(rssi);
2656         rssi = 0;
2657         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2658         signal = level_to_qual(le32_to_cpu(rssi));
2659
2660         netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2661                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2662                    level_to_qual(le32_to_cpu(rssi)));
2663
2664         /* Get AP capabilities */
2665         if (info) {
2666                 capability = le16_to_cpu(info->resp_ie.capa);
2667         } else {
2668                 /* Set atleast ESS/IBSS capability */
2669                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2670                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2671         }
2672
2673         /* Get channel and beacon interval */
2674         len = sizeof(config);
2675         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
2676         netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
2677                                 __func__, ret);
2678         if (ret >= 0) {
2679                 beacon_interval = le16_to_cpu(config.beacon_period);
2680                 channel = ieee80211_get_channel(priv->wdev.wiphy,
2681                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
2682                 if (!channel) {
2683                         netdev_warn(usbdev->net, "%s(): could not get channel."
2684                                                  "\n", __func__);
2685                         return;
2686                 }
2687         } else {
2688                 netdev_warn(usbdev->net, "%s(): could not get configuration.\n",
2689                                          __func__);
2690                 return;
2691         }
2692
2693         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2694         len = sizeof(ssid);
2695         memset(&ssid, 0, sizeof(ssid));
2696         ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2697         netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2698                                 "'%.32s'\n", __func__, ret,
2699                                 le32_to_cpu(ssid.length), ssid.essid);
2700
2701         if (le32_to_cpu(ssid.length) > 32)
2702                 ssid.length = cpu_to_le32(32);
2703
2704         ie_buf[0] = WLAN_EID_SSID;
2705         ie_buf[1] = le32_to_cpu(ssid.length);
2706         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2707
2708         ie_len = le32_to_cpu(ssid.length) + 2;
2709
2710         /* no tsf */
2711         timestamp = 0;
2712
2713         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2714                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2715                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2716                 bssid, (u32)timestamp, capability, beacon_interval, ie_len,
2717                 ssid.essid, signal);
2718
2719         cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2720                 timestamp, capability, beacon_interval, ie_buf, ie_len,
2721                 signal, GFP_KERNEL);
2722 }
2723
2724 /*
2725  * workers, indication handlers, device poller
2726  */
2727 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2728 {
2729         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2730         struct ndis_80211_assoc_info *info = NULL;
2731         u8 bssid[ETH_ALEN];
2732         int resp_ie_len, req_ie_len;
2733         u8 *req_ie, *resp_ie;
2734         int ret, offset;
2735         bool roamed = false;
2736         bool match_bss;
2737
2738         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2739                 /* received media connect indication while connected, either
2740                  * device reassociated with same AP or roamed to new. */
2741                 roamed = true;
2742         }
2743
2744         req_ie_len = 0;
2745         resp_ie_len = 0;
2746         req_ie = NULL;
2747         resp_ie = NULL;
2748
2749         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2750                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2751                 if (!info) {
2752                         /* No memory? Try resume work later */
2753                         set_bit(WORK_LINK_UP, &priv->work_pending);
2754                         queue_work(priv->workqueue, &priv->work);
2755                         return;
2756                 }
2757
2758                 /* Get association info IEs from device. */
2759                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2760                 if (!ret) {
2761                         req_ie_len = le32_to_cpu(info->req_ie_length);
2762                         if (req_ie_len > 0) {
2763                                 offset = le32_to_cpu(info->offset_req_ies);
2764
2765                                 if (offset > CONTROL_BUFFER_SIZE)
2766                                         offset = CONTROL_BUFFER_SIZE;
2767
2768                                 req_ie = (u8 *)info + offset;
2769
2770                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2771                                         req_ie_len =
2772                                                 CONTROL_BUFFER_SIZE - offset;
2773                         }
2774
2775                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2776                         if (resp_ie_len > 0) {
2777                                 offset = le32_to_cpu(info->offset_resp_ies);
2778
2779                                 if (offset > CONTROL_BUFFER_SIZE)
2780                                         offset = CONTROL_BUFFER_SIZE;
2781
2782                                 resp_ie = (u8 *)info + offset;
2783
2784                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2785                                         resp_ie_len =
2786                                                 CONTROL_BUFFER_SIZE - offset;
2787                         }
2788                 } else {
2789                         /* Since rndis_wlan_craft_connected_bss() might use info
2790                          * later and expects info to contain valid data if
2791                          * non-null, free info and set NULL here.
2792                          */
2793                         kfree(info);
2794                         info = NULL;
2795                 }
2796         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2797                 return;
2798
2799         ret = get_bssid(usbdev, bssid);
2800         if (ret < 0)
2801                 memset(bssid, 0, sizeof(bssid));
2802
2803         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2804                    bssid, roamed ? " roamed" : "");
2805
2806         /* Internal bss list in device should contain at least the currently
2807          * connected bss and we can get it to cfg80211 with
2808          * rndis_check_bssid_list().
2809          *
2810          * NDIS spec says: "If the device is associated, but the associated
2811          *  BSSID is not in its BSSID scan list, then the driver must add an
2812          *  entry for the BSSID at the end of the data that it returns in
2813          *  response to query of OID_802_11_BSSID_LIST."
2814          *
2815          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2816          */
2817         match_bss = false;
2818         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2819
2820         if (!is_zero_ether_addr(bssid) && !match_bss) {
2821                 /* Couldn't get bss from device, we need to manually craft bss
2822                  * for cfg80211.
2823                  */
2824                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2825         }
2826
2827         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2828                 if (!roamed)
2829                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2830                                                 req_ie_len, resp_ie,
2831                                                 resp_ie_len, 0, GFP_KERNEL);
2832                 else
2833                         cfg80211_roamed(usbdev->net, NULL, bssid,
2834                                         req_ie, req_ie_len,
2835                                         resp_ie, resp_ie_len, GFP_KERNEL);
2836         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2837                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2838
2839         if (info != NULL)
2840                 kfree(info);
2841
2842         priv->connected = true;
2843         memcpy(priv->bssid, bssid, ETH_ALEN);
2844
2845         usbnet_resume_rx(usbdev);
2846         netif_carrier_on(usbdev->net);
2847 }
2848
2849 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2850 {
2851         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2852
2853         if (priv->connected) {
2854                 priv->connected = false;
2855                 memset(priv->bssid, 0, ETH_ALEN);
2856
2857                 deauthenticate(usbdev);
2858
2859                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2860         }
2861
2862         netif_carrier_off(usbdev->net);
2863 }
2864
2865 static void rndis_wlan_worker(struct work_struct *work)
2866 {
2867         struct rndis_wlan_private *priv =
2868                 container_of(work, struct rndis_wlan_private, work);
2869         struct usbnet *usbdev = priv->usbdev;
2870
2871         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2872                 rndis_wlan_do_link_up_work(usbdev);
2873
2874         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2875                 rndis_wlan_do_link_down_work(usbdev);
2876
2877         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2878                 set_multicast_list(usbdev);
2879 }
2880
2881 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2882 {
2883         struct usbnet *usbdev = netdev_priv(dev);
2884         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2885
2886         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2887                 return;
2888
2889         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2890         queue_work(priv->workqueue, &priv->work);
2891 }
2892
2893 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2894                                 struct ndis_80211_status_indication *indication,
2895                                 int len)
2896 {
2897         u8 *buf;
2898         const char *type;
2899         int flags, buflen, key_id;
2900         bool pairwise_error, group_error;
2901         struct ndis_80211_auth_request *auth_req;
2902         enum nl80211_key_type key_type;
2903
2904         /* must have at least one array entry */
2905         if (len < offsetof(struct ndis_80211_status_indication, u) +
2906                                 sizeof(struct ndis_80211_auth_request)) {
2907                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2908                             len);
2909                 return;
2910         }
2911
2912         buf = (void *)&indication->u.auth_request[0];
2913         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2914
2915         while (buflen >= sizeof(*auth_req)) {
2916                 auth_req = (void *)buf;
2917                 type = "unknown";
2918                 flags = le32_to_cpu(auth_req->flags);
2919                 pairwise_error = false;
2920                 group_error = false;
2921
2922                 if (flags & 0x1)
2923                         type = "reauth request";
2924                 if (flags & 0x2)
2925                         type = "key update request";
2926                 if (flags & 0x6) {
2927                         pairwise_error = true;
2928                         type = "pairwise_error";
2929                 }
2930                 if (flags & 0xe) {
2931                         group_error = true;
2932                         type = "group_error";
2933                 }
2934
2935                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2936                             type, le32_to_cpu(auth_req->flags));
2937
2938                 if (pairwise_error) {
2939                         key_type = NL80211_KEYTYPE_PAIRWISE;
2940                         key_id = -1;
2941
2942                         cfg80211_michael_mic_failure(usbdev->net,
2943                                                         auth_req->bssid,
2944                                                         key_type, key_id, NULL,
2945                                                         GFP_KERNEL);
2946                 }
2947
2948                 if (group_error) {
2949                         key_type = NL80211_KEYTYPE_GROUP;
2950                         key_id = -1;
2951
2952                         cfg80211_michael_mic_failure(usbdev->net,
2953                                                         auth_req->bssid,
2954                                                         key_type, key_id, NULL,
2955                                                         GFP_KERNEL);
2956                 }
2957
2958                 buflen -= le32_to_cpu(auth_req->length);
2959                 buf += le32_to_cpu(auth_req->length);
2960         }
2961 }
2962
2963 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2964                                 struct ndis_80211_status_indication *indication,
2965                                 int len)
2966 {
2967         struct ndis_80211_pmkid_cand_list *cand_list;
2968         int list_len, expected_len, i;
2969
2970         if (len < offsetof(struct ndis_80211_status_indication, u) +
2971                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2972                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2973                             len);
2974                 return;
2975         }
2976
2977         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2978                         sizeof(struct ndis_80211_pmkid_candidate);
2979         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2980                         offsetof(struct ndis_80211_status_indication, u);
2981
2982         if (len < expected_len) {
2983                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2984                             len, expected_len);
2985                 return;
2986         }
2987
2988         cand_list = &indication->u.cand_list;
2989
2990         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2991                     le32_to_cpu(cand_list->version),
2992                     le32_to_cpu(cand_list->num_candidates));
2993
2994         if (le32_to_cpu(cand_list->version) != 1)
2995                 return;
2996
2997         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2998                 struct ndis_80211_pmkid_candidate *cand =
2999                                                 &cand_list->candidate_list[i];
3000
3001                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
3002                            i, le32_to_cpu(cand->flags), cand->bssid);
3003
3004 #if 0
3005                 struct iw_pmkid_cand pcand;
3006                 union iwreq_data wrqu;
3007
3008                 memset(&pcand, 0, sizeof(pcand));
3009                 if (le32_to_cpu(cand->flags) & 0x01)
3010                         pcand.flags |= IW_PMKID_CAND_PREAUTH;
3011                 pcand.index = i;
3012                 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
3013
3014                 memset(&wrqu, 0, sizeof(wrqu));
3015                 wrqu.data.length = sizeof(pcand);
3016                 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
3017                                                                 (u8 *)&pcand);
3018 #endif
3019         }
3020 }
3021
3022 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3023                         struct rndis_indicate *msg, int buflen)
3024 {
3025         struct ndis_80211_status_indication *indication;
3026         int len, offset;
3027
3028         offset = offsetof(struct rndis_indicate, status) +
3029                         le32_to_cpu(msg->offset);
3030         len = le32_to_cpu(msg->length);
3031
3032         if (len < 8) {
3033                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3034                             len);
3035                 return;
3036         }
3037
3038         if (offset + len > buflen) {
3039                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3040                             offset + len, buflen);
3041                 return;
3042         }
3043
3044         indication = (void *)((u8 *)msg + offset);
3045
3046         switch (le32_to_cpu(indication->status_type)) {
3047         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3048                 netdev_info(usbdev->net, "radio state indication: %i\n",
3049                             le32_to_cpu(indication->u.radio_status));
3050                 return;
3051
3052         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3053                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3054                             le32_to_cpu(indication->u.media_stream_mode));
3055                 return;
3056
3057         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3058                 rndis_wlan_auth_indication(usbdev, indication, len);
3059                 return;
3060
3061         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3062                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3063                 return;
3064
3065         default:
3066                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3067                             le32_to_cpu(indication->status_type));
3068         }
3069 }
3070
3071 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3072 {
3073         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3074         struct rndis_indicate *msg = ind;
3075
3076         switch (msg->status) {
3077         case RNDIS_STATUS_MEDIA_CONNECT:
3078                 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3079                         /* OID_802_11_ADD_KEY causes sometimes extra
3080                          * "media connect" indications which confuses driver
3081                          * and userspace to think that device is
3082                          * roaming/reassociating when it isn't.
3083                          */
3084                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3085                         return;
3086                 }
3087
3088                 usbnet_pause_rx(usbdev);
3089
3090                 netdev_info(usbdev->net, "media connect\n");
3091
3092                 /* queue work to avoid recursive calls into rndis_command */
3093                 set_bit(WORK_LINK_UP, &priv->work_pending);
3094                 queue_work(priv->workqueue, &priv->work);
3095                 break;
3096
3097         case RNDIS_STATUS_MEDIA_DISCONNECT:
3098                 netdev_info(usbdev->net, "media disconnect\n");
3099
3100                 /* queue work to avoid recursive calls into rndis_command */
3101                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3102                 queue_work(priv->workqueue, &priv->work);
3103                 break;
3104
3105         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3106                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3107                 break;
3108
3109         default:
3110                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3111                             le32_to_cpu(msg->status));
3112                 break;
3113         }
3114 }
3115
3116 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3117 {
3118         struct {
3119                 __le32  num_items;
3120                 __le32  items[8];
3121         } networks_supported;
3122         struct ndis_80211_capability *caps;
3123         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3124         int len, retval, i, n;
3125         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3126
3127         /* determine supported modes */
3128         len = sizeof(networks_supported);
3129         retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3130                                                 &networks_supported, &len);
3131         if (retval >= 0) {
3132                 n = le32_to_cpu(networks_supported.num_items);
3133                 if (n > 8)
3134                         n = 8;
3135                 for (i = 0; i < n; i++) {
3136                         switch (le32_to_cpu(networks_supported.items[i])) {
3137                         case NDIS_80211_TYPE_FREQ_HOP:
3138                         case NDIS_80211_TYPE_DIRECT_SEQ:
3139                                 priv->caps |= CAP_MODE_80211B;
3140                                 break;
3141                         case NDIS_80211_TYPE_OFDM_A:
3142                                 priv->caps |= CAP_MODE_80211A;
3143                                 break;
3144                         case NDIS_80211_TYPE_OFDM_G:
3145                                 priv->caps |= CAP_MODE_80211G;
3146                                 break;
3147                         }
3148                 }
3149         }
3150
3151         /* get device 802.11 capabilities, number of PMKIDs */
3152         caps = (struct ndis_80211_capability *)caps_buf;
3153         len = sizeof(caps_buf);
3154         retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3155         if (retval >= 0) {
3156                 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3157                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3158                                 le32_to_cpu(caps->length),
3159                                 le32_to_cpu(caps->version),
3160                                 le32_to_cpu(caps->num_pmkids),
3161                                 le32_to_cpu(caps->num_auth_encr_pair));
3162                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3163         } else
3164                 wiphy->max_num_pmkids = 0;
3165
3166         return retval;
3167 }
3168
3169 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3170 {
3171         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3172         enum nl80211_cqm_rssi_threshold_event event;
3173         int thold, hyst, last_event;
3174
3175         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3176                 return;
3177         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3178                 return;
3179
3180         last_event = priv->last_cqm_event_rssi;
3181         thold = priv->cqm_rssi_thold;
3182         hyst = priv->cqm_rssi_hyst;
3183
3184         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3185                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3186         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3187                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3188         else
3189                 return;
3190
3191         priv->last_cqm_event_rssi = rssi;
3192         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3193 }
3194
3195 #define DEVICE_POLLER_JIFFIES (HZ)
3196 static void rndis_device_poller(struct work_struct *work)
3197 {
3198         struct rndis_wlan_private *priv =
3199                 container_of(work, struct rndis_wlan_private,
3200                                                         dev_poller_work.work);
3201         struct usbnet *usbdev = priv->usbdev;
3202         __le32 rssi, tmp;
3203         int len, ret, j;
3204         int update_jiffies = DEVICE_POLLER_JIFFIES;
3205         void *buf;
3206
3207         /* Only check/do workaround when connected. Calling is_associated()
3208          * also polls device with rndis_command() and catches for media link
3209          * indications.
3210          */
3211         if (!is_associated(usbdev)) {
3212                 /* Workaround bad scanning in BCM4320a devices with active
3213                  * background scanning when not associated.
3214                  */
3215                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3216                     !priv->scan_request) {
3217                         /* Get previous scan results */
3218                         rndis_check_bssid_list(usbdev, NULL, NULL);
3219
3220                         /* Initiate new scan */
3221                         rndis_start_bssid_list_scan(usbdev);
3222                 }
3223
3224                 goto end;
3225         }
3226
3227         len = sizeof(rssi);
3228         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3229         if (ret == 0) {
3230                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3231                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3232         }
3233
3234         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3235                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3236
3237         /* Workaround transfer stalls on poor quality links.
3238          * TODO: find right way to fix these stalls (as stalls do not happen
3239          * with ndiswrapper/windows driver). */
3240         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3241                 /* Decrease stats worker interval to catch stalls.
3242                  * faster. Faster than 400-500ms causes packet loss,
3243                  * Slower doesn't catch stalls fast enough.
3244                  */
3245                 j = msecs_to_jiffies(priv->param_workaround_interval);
3246                 if (j > DEVICE_POLLER_JIFFIES)
3247                         j = DEVICE_POLLER_JIFFIES;
3248                 else if (j <= 0)
3249                         j = 1;
3250                 update_jiffies = j;
3251
3252                 /* Send scan OID. Use of both OIDs is required to get device
3253                  * working.
3254                  */
3255                 tmp = cpu_to_le32(1);
3256                 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3257                                                                 sizeof(tmp));
3258
3259                 len = CONTROL_BUFFER_SIZE;
3260                 buf = kmalloc(len, GFP_KERNEL);
3261                 if (!buf)
3262                         goto end;
3263
3264                 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3265                 kfree(buf);
3266         }
3267
3268 end:
3269         if (update_jiffies >= HZ)
3270                 update_jiffies = round_jiffies_relative(update_jiffies);
3271         else {
3272                 j = round_jiffies_relative(update_jiffies);
3273                 if (abs(j - update_jiffies) <= 10)
3274                         update_jiffies = j;
3275         }
3276
3277         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3278                                                                 update_jiffies);
3279 }
3280
3281 /*
3282  * driver/device initialization
3283  */
3284 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3285 {
3286         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3287
3288         priv->device_type = device_type;
3289
3290         priv->param_country[0] = modparam_country[0];
3291         priv->param_country[1] = modparam_country[1];
3292         priv->param_country[2] = 0;
3293         priv->param_frameburst   = modparam_frameburst;
3294         priv->param_afterburner  = modparam_afterburner;
3295         priv->param_power_save   = modparam_power_save;
3296         priv->param_power_output = modparam_power_output;
3297         priv->param_roamtrigger  = modparam_roamtrigger;
3298         priv->param_roamdelta    = modparam_roamdelta;
3299
3300         priv->param_country[0] = toupper(priv->param_country[0]);
3301         priv->param_country[1] = toupper(priv->param_country[1]);
3302         /* doesn't support EU as country code, use FI instead */
3303         if (!strcmp(priv->param_country, "EU"))
3304                 strcpy(priv->param_country, "FI");
3305
3306         if (priv->param_power_save < 0)
3307                 priv->param_power_save = 0;
3308         else if (priv->param_power_save > 2)
3309                 priv->param_power_save = 2;
3310
3311         if (priv->param_power_output < 0)
3312                 priv->param_power_output = 0;
3313         else if (priv->param_power_output > 3)
3314                 priv->param_power_output = 3;
3315
3316         if (priv->param_roamtrigger < -80)
3317                 priv->param_roamtrigger = -80;
3318         else if (priv->param_roamtrigger > -60)
3319                 priv->param_roamtrigger = -60;
3320
3321         if (priv->param_roamdelta < 0)
3322                 priv->param_roamdelta = 0;
3323         else if (priv->param_roamdelta > 2)
3324                 priv->param_roamdelta = 2;
3325
3326         if (modparam_workaround_interval < 0)
3327                 priv->param_workaround_interval = 500;
3328         else
3329                 priv->param_workaround_interval = modparam_workaround_interval;
3330 }
3331
3332 static int unknown_early_init(struct usbnet *usbdev)
3333 {
3334         /* copy module parameters for unknown so that iwconfig reports txpower
3335          * and workaround parameter is copied to private structure correctly.
3336          */
3337         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3338
3339         /* This is unknown device, so do not try set configuration parameters.
3340          */
3341
3342         return 0;
3343 }
3344
3345 static int bcm4320a_early_init(struct usbnet *usbdev)
3346 {
3347         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3348          * and workaround parameter is copied to private structure correctly.
3349          */
3350         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3351
3352         /* bcm4320a doesn't handle configuration parameters well. Try
3353          * set any and you get partially zeroed mac and broken device.
3354          */
3355
3356         return 0;
3357 }
3358
3359 static int bcm4320b_early_init(struct usbnet *usbdev)
3360 {
3361         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3362         char buf[8];
3363
3364         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3365
3366         /* Early initialization settings, setting these won't have effect
3367          * if called after generic_rndis_bind().
3368          */
3369
3370         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3371         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3372                                         priv->param_frameburst ? "1" : "0");
3373         rndis_set_config_parameter_str(usbdev, "Afterburner",
3374                                         priv->param_afterburner ? "1" : "0");
3375         sprintf(buf, "%d", priv->param_power_save);
3376         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3377         sprintf(buf, "%d", priv->param_power_output);
3378         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3379         sprintf(buf, "%d", priv->param_roamtrigger);
3380         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3381         sprintf(buf, "%d", priv->param_roamdelta);
3382         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3383
3384         return 0;
3385 }
3386
3387 /* same as rndis_netdev_ops but with local multicast handler */
3388 static const struct net_device_ops rndis_wlan_netdev_ops = {
3389         .ndo_open               = usbnet_open,
3390         .ndo_stop               = usbnet_stop,
3391         .ndo_start_xmit         = usbnet_start_xmit,
3392         .ndo_tx_timeout         = usbnet_tx_timeout,
3393         .ndo_set_mac_address    = eth_mac_addr,
3394         .ndo_validate_addr      = eth_validate_addr,
3395         .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
3396 };
3397
3398 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3399 {
3400         struct wiphy *wiphy;
3401         struct rndis_wlan_private *priv;
3402         int retval, len;
3403         __le32 tmp;
3404
3405         /* allocate wiphy and rndis private data
3406          * NOTE: We only support a single virtual interface, so wiphy
3407          * and wireless_dev are somewhat synonymous for this device.
3408          */
3409         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3410         if (!wiphy)
3411                 return -ENOMEM;
3412
3413         priv = wiphy_priv(wiphy);
3414         usbdev->net->ieee80211_ptr = &priv->wdev;
3415         priv->wdev.wiphy = wiphy;
3416         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3417
3418         /* These have to be initialized before calling generic_rndis_bind().
3419          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3420          */
3421         usbdev->driver_priv = priv;
3422         priv->usbdev = usbdev;
3423
3424         mutex_init(&priv->command_lock);
3425
3426         /* because rndis_command() sleeps we need to use workqueue */
3427         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3428         INIT_WORK(&priv->work, rndis_wlan_worker);
3429         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3430         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3431
3432         /* try bind rndis_host */
3433         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3434         if (retval < 0)
3435                 goto fail;
3436
3437         /* generic_rndis_bind set packet filter to multicast_all+
3438          * promisc mode which doesn't work well for our devices (device
3439          * picks up rssi to closest station instead of to access point).
3440          *
3441          * rndis_host wants to avoid all OID as much as possible
3442          * so do promisc/multicast handling in rndis_wlan.
3443          */
3444         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3445
3446         tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3447         retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3448                                                                 sizeof(tmp));
3449
3450         len = sizeof(tmp);
3451         retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3452                                                                 &len);
3453         priv->multicast_size = le32_to_cpu(tmp);
3454         if (retval < 0 || priv->multicast_size < 0)
3455                 priv->multicast_size = 0;
3456         if (priv->multicast_size > 0)
3457                 usbdev->net->flags |= IFF_MULTICAST;
3458         else
3459                 usbdev->net->flags &= ~IFF_MULTICAST;
3460
3461         /* fill-out wiphy structure and register w/ cfg80211 */
3462         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3463         wiphy->privid = rndis_wiphy_privid;
3464         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3465                                         | BIT(NL80211_IFTYPE_ADHOC);
3466         wiphy->max_scan_ssids = 1;
3467
3468         /* TODO: fill-out band/encr information based on priv->caps */
3469         rndis_wlan_get_caps(usbdev, wiphy);
3470
3471         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3472         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3473         priv->band.channels = priv->channels;
3474         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3475         priv->band.bitrates = priv->rates;
3476         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3477         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3478         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3479
3480         memcpy(priv->cipher_suites, rndis_cipher_suites,
3481                                                 sizeof(rndis_cipher_suites));
3482         wiphy->cipher_suites = priv->cipher_suites;
3483         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3484
3485         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3486
3487         if (wiphy_register(wiphy)) {
3488                 retval = -ENODEV;
3489                 goto fail;
3490         }
3491
3492         set_default_iw_params(usbdev);
3493
3494         priv->power_mode = -1;
3495
3496         /* set default rts/frag */
3497         rndis_set_wiphy_params(wiphy,
3498                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3499
3500         /* turn radio off on init */
3501         priv->radio_on = false;
3502         disassociate(usbdev, false);
3503         netif_carrier_off(usbdev->net);
3504
3505         return 0;
3506
3507 fail:
3508         cancel_delayed_work_sync(&priv->dev_poller_work);
3509         cancel_delayed_work_sync(&priv->scan_work);
3510         cancel_work_sync(&priv->work);
3511         flush_workqueue(priv->workqueue);
3512         destroy_workqueue(priv->workqueue);
3513
3514         wiphy_free(wiphy);
3515         return retval;
3516 }
3517
3518 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3519 {
3520         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3521
3522         /* turn radio off */
3523         disassociate(usbdev, false);
3524
3525         cancel_delayed_work_sync(&priv->dev_poller_work);
3526         cancel_delayed_work_sync(&priv->scan_work);
3527         cancel_work_sync(&priv->work);
3528         flush_workqueue(priv->workqueue);
3529         destroy_workqueue(priv->workqueue);
3530
3531         rndis_unbind(usbdev, intf);
3532
3533         wiphy_unregister(priv->wdev.wiphy);
3534         wiphy_free(priv->wdev.wiphy);
3535 }
3536
3537 static int rndis_wlan_reset(struct usbnet *usbdev)
3538 {
3539         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3540         int retval;
3541
3542         netdev_dbg(usbdev->net, "%s()\n", __func__);
3543
3544         retval = rndis_reset(usbdev);
3545         if (retval)
3546                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3547
3548         /* rndis_reset cleared multicast list, so restore here.
3549            (set_multicast_list() also turns on current packet filter) */
3550         set_multicast_list(usbdev);
3551
3552         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3553                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3554
3555         return deauthenticate(usbdev);
3556 }
3557
3558 static int rndis_wlan_stop(struct usbnet *usbdev)
3559 {
3560         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3561         int retval;
3562         __le32 filter;
3563
3564         netdev_dbg(usbdev->net, "%s()\n", __func__);
3565
3566         retval = disassociate(usbdev, false);
3567
3568         priv->work_pending = 0;
3569         cancel_delayed_work_sync(&priv->dev_poller_work);
3570         cancel_delayed_work_sync(&priv->scan_work);
3571         cancel_work_sync(&priv->work);
3572         flush_workqueue(priv->workqueue);
3573
3574         if (priv->scan_request) {
3575                 cfg80211_scan_done(priv->scan_request, true);
3576                 priv->scan_request = NULL;
3577         }
3578
3579         /* Set current packet filter zero to block receiving data packets from
3580            device. */
3581         filter = 0;
3582         rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3583                                                                 sizeof(filter));
3584
3585         return retval;
3586 }
3587
3588 static const struct driver_info bcm4320b_info = {
3589         .description =  "Wireless RNDIS device, BCM4320b based",
3590         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3591                                 FLAG_AVOID_UNLINK_URBS,
3592         .bind =         rndis_wlan_bind,
3593         .unbind =       rndis_wlan_unbind,
3594         .status =       rndis_status,
3595         .rx_fixup =     rndis_rx_fixup,
3596         .tx_fixup =     rndis_tx_fixup,
3597         .reset =        rndis_wlan_reset,
3598         .stop =         rndis_wlan_stop,
3599         .early_init =   bcm4320b_early_init,
3600         .indication =   rndis_wlan_indication,
3601 };
3602
3603 static const struct driver_info bcm4320a_info = {
3604         .description =  "Wireless RNDIS device, BCM4320a based",
3605         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3606                                 FLAG_AVOID_UNLINK_URBS,
3607         .bind =         rndis_wlan_bind,
3608         .unbind =       rndis_wlan_unbind,
3609         .status =       rndis_status,
3610         .rx_fixup =     rndis_rx_fixup,
3611         .tx_fixup =     rndis_tx_fixup,
3612         .reset =        rndis_wlan_reset,
3613         .stop =         rndis_wlan_stop,
3614         .early_init =   bcm4320a_early_init,
3615         .indication =   rndis_wlan_indication,
3616 };
3617
3618 static const struct driver_info rndis_wlan_info = {
3619         .description =  "Wireless RNDIS device",
3620         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3621                                 FLAG_AVOID_UNLINK_URBS,
3622         .bind =         rndis_wlan_bind,
3623         .unbind =       rndis_wlan_unbind,
3624         .status =       rndis_status,
3625         .rx_fixup =     rndis_rx_fixup,
3626         .tx_fixup =     rndis_tx_fixup,
3627         .reset =        rndis_wlan_reset,
3628         .stop =         rndis_wlan_stop,
3629         .early_init =   unknown_early_init,
3630         .indication =   rndis_wlan_indication,
3631 };
3632
3633 /*-------------------------------------------------------------------------*/
3634
3635 static const struct usb_device_id products [] = {
3636 #define RNDIS_MASTER_INTERFACE \
3637         .bInterfaceClass        = USB_CLASS_COMM, \
3638         .bInterfaceSubClass     = 2 /* ACM */, \
3639         .bInterfaceProtocol     = 0x0ff
3640
3641 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3642  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3643  */
3644 {
3645         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3646                           | USB_DEVICE_ID_MATCH_DEVICE,
3647         .idVendor               = 0x0411,
3648         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3649         RNDIS_MASTER_INTERFACE,
3650         .driver_info            = (unsigned long) &bcm4320b_info,
3651 }, {
3652         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3653                           | USB_DEVICE_ID_MATCH_DEVICE,
3654         .idVendor               = 0x0baf,
3655         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3656         RNDIS_MASTER_INTERFACE,
3657         .driver_info            = (unsigned long) &bcm4320b_info,
3658 }, {
3659         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3660                           | USB_DEVICE_ID_MATCH_DEVICE,
3661         .idVendor               = 0x050d,
3662         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3663         RNDIS_MASTER_INTERFACE,
3664         .driver_info            = (unsigned long) &bcm4320b_info,
3665 }, {
3666         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3667                           | USB_DEVICE_ID_MATCH_DEVICE,
3668         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3669         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3670         RNDIS_MASTER_INTERFACE,
3671         .driver_info            = (unsigned long) &bcm4320b_info,
3672 }, {
3673         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3674                           | USB_DEVICE_ID_MATCH_DEVICE,
3675         .idVendor               = 0x13b1,
3676         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3677         RNDIS_MASTER_INTERFACE,
3678         .driver_info            = (unsigned long) &bcm4320b_info,
3679 }, {
3680         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3681                           | USB_DEVICE_ID_MATCH_DEVICE,
3682         .idVendor               = 0x13b1,
3683         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3684         RNDIS_MASTER_INTERFACE,
3685         .driver_info            = (unsigned long) &bcm4320b_info,
3686 }, {
3687         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3688                           | USB_DEVICE_ID_MATCH_DEVICE,
3689         .idVendor               = 0x0b05,
3690         .idProduct              = 0x1717,       /* Asus WL169gE */
3691         RNDIS_MASTER_INTERFACE,
3692         .driver_info            = (unsigned long) &bcm4320b_info,
3693 }, {
3694         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3695                           | USB_DEVICE_ID_MATCH_DEVICE,
3696         .idVendor               = 0x0a5c,
3697         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3698         RNDIS_MASTER_INTERFACE,
3699         .driver_info            = (unsigned long) &bcm4320b_info,
3700 }, {
3701         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3702                           | USB_DEVICE_ID_MATCH_DEVICE,
3703         .idVendor               = 0x1690,
3704         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3705         RNDIS_MASTER_INTERFACE,
3706         .driver_info            = (unsigned long) &bcm4320b_info,
3707 },
3708 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3709  * parameters available, hardware probably contain older firmware version with
3710  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3711  */
3712 {
3713         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3714                           | USB_DEVICE_ID_MATCH_DEVICE,
3715         .idVendor               = 0x13b1,
3716         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3717         RNDIS_MASTER_INTERFACE,
3718         .driver_info            = (unsigned long) &bcm4320a_info,
3719 }, {
3720         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3721                           | USB_DEVICE_ID_MATCH_DEVICE,
3722         .idVendor               = 0x0baf,
3723         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3724         RNDIS_MASTER_INTERFACE,
3725         .driver_info            = (unsigned long) &bcm4320a_info,
3726 }, {
3727         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3728                           | USB_DEVICE_ID_MATCH_DEVICE,
3729         .idVendor               = 0x0411,
3730         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3731         RNDIS_MASTER_INTERFACE,
3732         .driver_info            = (unsigned long) &bcm4320a_info,
3733 },
3734 /* Generic Wireless RNDIS devices that we don't have exact
3735  * idVendor/idProduct/chip yet.
3736  */
3737 {
3738         /* RNDIS is MSFT's un-official variant of CDC ACM */
3739         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3740         .driver_info = (unsigned long) &rndis_wlan_info,
3741 }, {
3742         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3743         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3744         .driver_info = (unsigned long) &rndis_wlan_info,
3745 },
3746         { },            // END
3747 };
3748 MODULE_DEVICE_TABLE(usb, products);
3749
3750 static struct usb_driver rndis_wlan_driver = {
3751         .name =         "rndis_wlan",
3752         .id_table =     products,
3753         .probe =        usbnet_probe,
3754         .disconnect =   usbnet_disconnect,
3755         .suspend =      usbnet_suspend,
3756         .resume =       usbnet_resume,
3757 };
3758
3759 static int __init rndis_wlan_init(void)
3760 {
3761         return usb_register(&rndis_wlan_driver);
3762 }
3763 module_init(rndis_wlan_init);
3764
3765 static void __exit rndis_wlan_exit(void)
3766 {
3767         usb_deregister(&rndis_wlan_driver);
3768 }
3769 module_exit(rndis_wlan_exit);
3770
3771 MODULE_AUTHOR("Bjorge Dijkstra");
3772 MODULE_AUTHOR("Jussi Kivilinna");
3773 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3774 MODULE_LICENSE("GPL");
3775