linux/drivers/net/wireless/rndis_wlan.c
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   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@iki.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, see <http://www.gnu.org/licenses/>.
  19 *
  20 *  Portions of this file are based on NDISwrapper project,
  21 *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
  22 *  http://ndiswrapper.sourceforge.net/
  23 */
  24
  25// #define      DEBUG                   // error path messages, extra info
  26// #define      VERBOSE                 // more; success messages
  27
  28#include <linux/module.h>
  29#include <linux/netdevice.h>
  30#include <linux/etherdevice.h>
  31#include <linux/ethtool.h>
  32#include <linux/workqueue.h>
  33#include <linux/mutex.h>
  34#include <linux/mii.h>
  35#include <linux/usb.h>
  36#include <linux/usb/cdc.h>
  37#include <linux/ieee80211.h>
  38#include <linux/if_arp.h>
  39#include <linux/ctype.h>
  40#include <linux/spinlock.h>
  41#include <linux/slab.h>
  42#include <net/cfg80211.h>
  43#include <linux/usb/usbnet.h>
  44#include <linux/usb/rndis_host.h>
  45
  46
  47/* NOTE: All these are settings for Broadcom chipset */
  48static char modparam_country[4] = "EU";
  49module_param_string(country, modparam_country, 4, 0444);
  50MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  51
  52static int modparam_frameburst = 1;
  53module_param_named(frameburst, modparam_frameburst, int, 0444);
  54MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  55
  56static int modparam_afterburner = 0;
  57module_param_named(afterburner, modparam_afterburner, int, 0444);
  58MODULE_PARM_DESC(afterburner,
  59        "enable afterburner aka '125 High Speed Mode' (default: off)");
  60
  61static int modparam_power_save = 0;
  62module_param_named(power_save, modparam_power_save, int, 0444);
  63MODULE_PARM_DESC(power_save,
  64        "set power save mode: 0=off, 1=on, 2=fast (default: off)");
  65
  66static int modparam_power_output = 3;
  67module_param_named(power_output, modparam_power_output, int, 0444);
  68MODULE_PARM_DESC(power_output,
  69        "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  70
  71static int modparam_roamtrigger = -70;
  72module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  73MODULE_PARM_DESC(roamtrigger,
  74        "set roaming dBm trigger: -80=optimize for distance, "
  75                                "-60=bandwidth (default: -70)");
  76
  77static int modparam_roamdelta = 1;
  78module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  79MODULE_PARM_DESC(roamdelta,
  80        "set roaming tendency: 0=aggressive, 1=moderate, "
  81                                "2=conservative (default: moderate)");
  82
  83static int modparam_workaround_interval;
  84module_param_named(workaround_interval, modparam_workaround_interval,
  85                                                        int, 0444);
  86MODULE_PARM_DESC(workaround_interval,
  87        "set stall workaround interval in msecs (0=disabled) (default: 0)");
  88
  89/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
  90#define WL_NOISE        -96     /* typical noise level in dBm */
  91#define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
  92
  93
  94/* Assume that Broadcom 4320 (only chipset at time of writing known to be
  95 * based on wireless rndis) has default txpower of 13dBm.
  96 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
  97 *  100% : 20 mW ~ 13dBm
  98 *   75% : 15 mW ~ 12dBm
  99 *   50% : 10 mW ~ 10dBm
 100 *   25% :  5 mW ~  7dBm
 101 */
 102#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
 103#define BCM4320_DEFAULT_TXPOWER_DBM_75  12
 104#define BCM4320_DEFAULT_TXPOWER_DBM_50  10
 105#define BCM4320_DEFAULT_TXPOWER_DBM_25  7
 106
 107/* Known device types */
 108#define RNDIS_UNKNOWN   0
 109#define RNDIS_BCM4320A  1
 110#define RNDIS_BCM4320B  2
 111
 112
 113/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 114 * slightly modified for datatype endianess, etc
 115 */
 116#define NDIS_802_11_LENGTH_SSID 32
 117#define NDIS_802_11_LENGTH_RATES 8
 118#define NDIS_802_11_LENGTH_RATES_EX 16
 119
 120enum ndis_80211_net_type {
 121        NDIS_80211_TYPE_FREQ_HOP,
 122        NDIS_80211_TYPE_DIRECT_SEQ,
 123        NDIS_80211_TYPE_OFDM_A,
 124        NDIS_80211_TYPE_OFDM_G
 125};
 126
 127enum ndis_80211_net_infra {
 128        NDIS_80211_INFRA_ADHOC,
 129        NDIS_80211_INFRA_INFRA,
 130        NDIS_80211_INFRA_AUTO_UNKNOWN
 131};
 132
 133enum ndis_80211_auth_mode {
 134        NDIS_80211_AUTH_OPEN,
 135        NDIS_80211_AUTH_SHARED,
 136        NDIS_80211_AUTH_AUTO_SWITCH,
 137        NDIS_80211_AUTH_WPA,
 138        NDIS_80211_AUTH_WPA_PSK,
 139        NDIS_80211_AUTH_WPA_NONE,
 140        NDIS_80211_AUTH_WPA2,
 141        NDIS_80211_AUTH_WPA2_PSK
 142};
 143
 144enum ndis_80211_encr_status {
 145        NDIS_80211_ENCR_WEP_ENABLED,
 146        NDIS_80211_ENCR_DISABLED,
 147        NDIS_80211_ENCR_WEP_KEY_ABSENT,
 148        NDIS_80211_ENCR_NOT_SUPPORTED,
 149        NDIS_80211_ENCR_TKIP_ENABLED,
 150        NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 151        NDIS_80211_ENCR_CCMP_ENABLED,
 152        NDIS_80211_ENCR_CCMP_KEY_ABSENT
 153};
 154
 155enum ndis_80211_priv_filter {
 156        NDIS_80211_PRIV_ACCEPT_ALL,
 157        NDIS_80211_PRIV_8021X_WEP
 158};
 159
 160enum ndis_80211_status_type {
 161        NDIS_80211_STATUSTYPE_AUTHENTICATION,
 162        NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 163        NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 164        NDIS_80211_STATUSTYPE_RADIOSTATE,
 165};
 166
 167enum ndis_80211_media_stream_mode {
 168        NDIS_80211_MEDIA_STREAM_OFF,
 169        NDIS_80211_MEDIA_STREAM_ON
 170};
 171
 172enum ndis_80211_radio_status {
 173        NDIS_80211_RADIO_STATUS_ON,
 174        NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 175        NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 176};
 177
 178enum ndis_80211_addkey_bits {
 179        NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 180        NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 181        NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 182        NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 183};
 184
 185enum ndis_80211_addwep_bits {
 186        NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 187        NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 188};
 189
 190enum ndis_80211_power_mode {
 191        NDIS_80211_POWER_MODE_CAM,
 192        NDIS_80211_POWER_MODE_MAX_PSP,
 193        NDIS_80211_POWER_MODE_FAST_PSP,
 194};
 195
 196enum ndis_80211_pmkid_cand_list_flag_bits {
 197        NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
 198};
 199
 200struct ndis_80211_auth_request {
 201        __le32 length;
 202        u8 bssid[ETH_ALEN];
 203        u8 padding[2];
 204        __le32 flags;
 205} __packed;
 206
 207struct ndis_80211_pmkid_candidate {
 208        u8 bssid[ETH_ALEN];
 209        u8 padding[2];
 210        __le32 flags;
 211} __packed;
 212
 213struct ndis_80211_pmkid_cand_list {
 214        __le32 version;
 215        __le32 num_candidates;
 216        struct ndis_80211_pmkid_candidate candidate_list[0];
 217} __packed;
 218
 219struct ndis_80211_status_indication {
 220        __le32 status_type;
 221        union {
 222                __le32                                  media_stream_mode;
 223                __le32                                  radio_status;
 224                struct ndis_80211_auth_request          auth_request[0];
 225                struct ndis_80211_pmkid_cand_list       cand_list;
 226        } u;
 227} __packed;
 228
 229struct ndis_80211_ssid {
 230        __le32 length;
 231        u8 essid[NDIS_802_11_LENGTH_SSID];
 232} __packed;
 233
 234struct ndis_80211_conf_freq_hop {
 235        __le32 length;
 236        __le32 hop_pattern;
 237        __le32 hop_set;
 238        __le32 dwell_time;
 239} __packed;
 240
 241struct ndis_80211_conf {
 242        __le32 length;
 243        __le32 beacon_period;
 244        __le32 atim_window;
 245        __le32 ds_config;
 246        struct ndis_80211_conf_freq_hop fh_config;
 247} __packed;
 248
 249struct ndis_80211_bssid_ex {
 250        __le32 length;
 251        u8 mac[ETH_ALEN];
 252        u8 padding[2];
 253        struct ndis_80211_ssid ssid;
 254        __le32 privacy;
 255        __le32 rssi;
 256        __le32 net_type;
 257        struct ndis_80211_conf config;
 258        __le32 net_infra;
 259        u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 260        __le32 ie_length;
 261        u8 ies[0];
 262} __packed;
 263
 264struct ndis_80211_bssid_list_ex {
 265        __le32 num_items;
 266        struct ndis_80211_bssid_ex bssid[0];
 267} __packed;
 268
 269struct ndis_80211_fixed_ies {
 270        u8 timestamp[8];
 271        __le16 beacon_interval;
 272        __le16 capabilities;
 273} __packed;
 274
 275struct ndis_80211_wep_key {
 276        __le32 size;
 277        __le32 index;
 278        __le32 length;
 279        u8 material[32];
 280} __packed;
 281
 282struct ndis_80211_key {
 283        __le32 size;
 284        __le32 index;
 285        __le32 length;
 286        u8 bssid[ETH_ALEN];
 287        u8 padding[6];
 288        u8 rsc[8];
 289        u8 material[32];
 290} __packed;
 291
 292struct ndis_80211_remove_key {
 293        __le32 size;
 294        __le32 index;
 295        u8 bssid[ETH_ALEN];
 296        u8 padding[2];
 297} __packed;
 298
 299struct ndis_config_param {
 300        __le32 name_offs;
 301        __le32 name_length;
 302        __le32 type;
 303        __le32 value_offs;
 304        __le32 value_length;
 305} __packed;
 306
 307struct ndis_80211_assoc_info {
 308        __le32 length;
 309        __le16 req_ies;
 310        struct req_ie {
 311                __le16 capa;
 312                __le16 listen_interval;
 313                u8 cur_ap_address[ETH_ALEN];
 314        } req_ie;
 315        __le32 req_ie_length;
 316        __le32 offset_req_ies;
 317        __le16 resp_ies;
 318        struct resp_ie {
 319                __le16 capa;
 320                __le16 status_code;
 321                __le16 assoc_id;
 322        } resp_ie;
 323        __le32 resp_ie_length;
 324        __le32 offset_resp_ies;
 325} __packed;
 326
 327struct ndis_80211_auth_encr_pair {
 328        __le32 auth_mode;
 329        __le32 encr_mode;
 330} __packed;
 331
 332struct ndis_80211_capability {
 333        __le32 length;
 334        __le32 version;
 335        __le32 num_pmkids;
 336        __le32 num_auth_encr_pair;
 337        struct ndis_80211_auth_encr_pair auth_encr_pair[0];
 338} __packed;
 339
 340struct ndis_80211_bssid_info {
 341        u8 bssid[ETH_ALEN];
 342        u8 pmkid[16];
 343} __packed;
 344
 345struct ndis_80211_pmkid {
 346        __le32 length;
 347        __le32 bssid_info_count;
 348        struct ndis_80211_bssid_info bssid_info[0];
 349} __packed;
 350
 351/*
 352 *  private data
 353 */
 354#define CAP_MODE_80211A         1
 355#define CAP_MODE_80211B         2
 356#define CAP_MODE_80211G         4
 357#define CAP_MODE_MASK           7
 358
 359#define WORK_LINK_UP            0
 360#define WORK_LINK_DOWN          1
 361#define WORK_SET_MULTICAST_LIST 2
 362
 363#define RNDIS_WLAN_ALG_NONE     0
 364#define RNDIS_WLAN_ALG_WEP      (1<<0)
 365#define RNDIS_WLAN_ALG_TKIP     (1<<1)
 366#define RNDIS_WLAN_ALG_CCMP     (1<<2)
 367
 368#define RNDIS_WLAN_NUM_KEYS             4
 369#define RNDIS_WLAN_KEY_MGMT_NONE        0
 370#define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
 371#define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
 372
 373#define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 374
 375static const struct ieee80211_channel rndis_channels[] = {
 376        { .center_freq = 2412 },
 377        { .center_freq = 2417 },
 378        { .center_freq = 2422 },
 379        { .center_freq = 2427 },
 380        { .center_freq = 2432 },
 381        { .center_freq = 2437 },
 382        { .center_freq = 2442 },
 383        { .center_freq = 2447 },
 384        { .center_freq = 2452 },
 385        { .center_freq = 2457 },
 386        { .center_freq = 2462 },
 387        { .center_freq = 2467 },
 388        { .center_freq = 2472 },
 389        { .center_freq = 2484 },
 390};
 391
 392static const struct ieee80211_rate rndis_rates[] = {
 393        { .bitrate = 10 },
 394        { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 395        { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 396        { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 397        { .bitrate = 60 },
 398        { .bitrate = 90 },
 399        { .bitrate = 120 },
 400        { .bitrate = 180 },
 401        { .bitrate = 240 },
 402        { .bitrate = 360 },
 403        { .bitrate = 480 },
 404        { .bitrate = 540 }
 405};
 406
 407static const u32 rndis_cipher_suites[] = {
 408        WLAN_CIPHER_SUITE_WEP40,
 409        WLAN_CIPHER_SUITE_WEP104,
 410        WLAN_CIPHER_SUITE_TKIP,
 411        WLAN_CIPHER_SUITE_CCMP,
 412};
 413
 414struct rndis_wlan_encr_key {
 415        int len;
 416        u32 cipher;
 417        u8 material[32];
 418        u8 bssid[ETH_ALEN];
 419        bool pairwise;
 420        bool tx_key;
 421};
 422
 423/* RNDIS device private data */
 424struct rndis_wlan_private {
 425        struct usbnet *usbdev;
 426
 427        struct wireless_dev wdev;
 428
 429        struct cfg80211_scan_request *scan_request;
 430
 431        struct workqueue_struct *workqueue;
 432        struct delayed_work dev_poller_work;
 433        struct delayed_work scan_work;
 434        struct work_struct work;
 435        struct mutex command_lock;
 436        unsigned long work_pending;
 437        int last_qual;
 438        s32 cqm_rssi_thold;
 439        u32 cqm_rssi_hyst;
 440        int last_cqm_event_rssi;
 441
 442        struct ieee80211_supported_band band;
 443        struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 444        struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 445        u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 446
 447        int device_type;
 448        int caps;
 449        int multicast_size;
 450
 451        /* module parameters */
 452        char param_country[4];
 453        int  param_frameburst;
 454        int  param_afterburner;
 455        int  param_power_save;
 456        int  param_power_output;
 457        int  param_roamtrigger;
 458        int  param_roamdelta;
 459        u32  param_workaround_interval;
 460
 461        /* hardware state */
 462        bool radio_on;
 463        int power_mode;
 464        int infra_mode;
 465        bool connected;
 466        u8 bssid[ETH_ALEN];
 467        u32 current_command_oid;
 468
 469        /* encryption stuff */
 470        u8 encr_tx_key_index;
 471        struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
 472        int  wpa_version;
 473
 474        u8 command_buffer[COMMAND_BUFFER_SIZE];
 475};
 476
 477/*
 478 * cfg80211 ops
 479 */
 480static int rndis_change_virtual_intf(struct wiphy *wiphy,
 481                                        struct net_device *dev,
 482                                        enum nl80211_iftype type,
 483                                        struct vif_params *params);
 484
 485static int rndis_scan(struct wiphy *wiphy,
 486                        struct cfg80211_scan_request *request);
 487
 488static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 489
 490static int rndis_set_tx_power(struct wiphy *wiphy,
 491                              struct wireless_dev *wdev,
 492                              enum nl80211_tx_power_setting type,
 493                              int mbm);
 494static int rndis_get_tx_power(struct wiphy *wiphy,
 495                              struct wireless_dev *wdev,
 496                              int *dbm);
 497
 498static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 499                                struct cfg80211_connect_params *sme);
 500
 501static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 502                                u16 reason_code);
 503
 504static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 505                                        struct cfg80211_ibss_params *params);
 506
 507static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 508
 509static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 510                         u8 key_index, bool pairwise, const u8 *mac_addr,
 511                         struct key_params *params);
 512
 513static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 514                         u8 key_index, bool pairwise, const u8 *mac_addr);
 515
 516static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 517                                 u8 key_index, bool unicast, bool multicast);
 518
 519static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 520                             const u8 *mac, struct station_info *sinfo);
 521
 522static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 523                               int idx, u8 *mac, struct station_info *sinfo);
 524
 525static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 526                                struct cfg80211_pmksa *pmksa);
 527
 528static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 529                                struct cfg80211_pmksa *pmksa);
 530
 531static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 532
 533static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 534                                bool enabled, int timeout);
 535
 536static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 537                                        struct net_device *dev,
 538                                        s32 rssi_thold, u32 rssi_hyst);
 539
 540static const struct cfg80211_ops rndis_config_ops = {
 541        .change_virtual_intf = rndis_change_virtual_intf,
 542        .scan = rndis_scan,
 543        .set_wiphy_params = rndis_set_wiphy_params,
 544        .set_tx_power = rndis_set_tx_power,
 545        .get_tx_power = rndis_get_tx_power,
 546        .connect = rndis_connect,
 547        .disconnect = rndis_disconnect,
 548        .join_ibss = rndis_join_ibss,
 549        .leave_ibss = rndis_leave_ibss,
 550        .add_key = rndis_add_key,
 551        .del_key = rndis_del_key,
 552        .set_default_key = rndis_set_default_key,
 553        .get_station = rndis_get_station,
 554        .dump_station = rndis_dump_station,
 555        .set_pmksa = rndis_set_pmksa,
 556        .del_pmksa = rndis_del_pmksa,
 557        .flush_pmksa = rndis_flush_pmksa,
 558        .set_power_mgmt = rndis_set_power_mgmt,
 559        .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 560};
 561
 562static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 563
 564
 565static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 566{
 567        return (struct rndis_wlan_private *)dev->driver_priv;
 568}
 569
 570static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 571{
 572        switch (priv->param_power_output) {
 573        default:
 574        case 3:
 575                return BCM4320_DEFAULT_TXPOWER_DBM_100;
 576        case 2:
 577                return BCM4320_DEFAULT_TXPOWER_DBM_75;
 578        case 1:
 579                return BCM4320_DEFAULT_TXPOWER_DBM_50;
 580        case 0:
 581                return BCM4320_DEFAULT_TXPOWER_DBM_25;
 582        }
 583}
 584
 585static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 586{
 587        int cipher = priv->encr_keys[idx].cipher;
 588
 589        return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 590                cipher == WLAN_CIPHER_SUITE_TKIP);
 591}
 592
 593static int rndis_cipher_to_alg(u32 cipher)
 594{
 595        switch (cipher) {
 596        default:
 597                return RNDIS_WLAN_ALG_NONE;
 598        case WLAN_CIPHER_SUITE_WEP40:
 599        case WLAN_CIPHER_SUITE_WEP104:
 600                return RNDIS_WLAN_ALG_WEP;
 601        case WLAN_CIPHER_SUITE_TKIP:
 602                return RNDIS_WLAN_ALG_TKIP;
 603        case WLAN_CIPHER_SUITE_CCMP:
 604                return RNDIS_WLAN_ALG_CCMP;
 605        }
 606}
 607
 608static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 609{
 610        switch (akm_suite) {
 611        default:
 612                return RNDIS_WLAN_KEY_MGMT_NONE;
 613        case WLAN_AKM_SUITE_8021X:
 614                return RNDIS_WLAN_KEY_MGMT_802_1X;
 615        case WLAN_AKM_SUITE_PSK:
 616                return RNDIS_WLAN_KEY_MGMT_PSK;
 617        }
 618}
 619
 620#ifdef DEBUG
 621static const char *oid_to_string(u32 oid)
 622{
 623        switch (oid) {
 624#define OID_STR(oid) case oid: return(#oid)
 625                /* from rndis_host.h */
 626                OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 627                OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 628                OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 629                OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 630
 631                /* from rndis_wlan.c */
 632                OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 633                OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 634
 635                OID_STR(RNDIS_OID_GEN_XMIT_OK);
 636                OID_STR(RNDIS_OID_GEN_RCV_OK);
 637                OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 638                OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 639                OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 640
 641                OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
 642                OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
 643                OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
 644
 645                OID_STR(RNDIS_OID_802_11_BSSID);
 646                OID_STR(RNDIS_OID_802_11_SSID);
 647                OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
 648                OID_STR(RNDIS_OID_802_11_ADD_WEP);
 649                OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
 650                OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
 651                OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
 652                OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
 653                OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
 654                OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
 655                OID_STR(RNDIS_OID_802_11_ADD_KEY);
 656                OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
 657                OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
 658                OID_STR(RNDIS_OID_802_11_CAPABILITY);
 659                OID_STR(RNDIS_OID_802_11_PMKID);
 660                OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
 661                OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
 662                OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
 663                OID_STR(RNDIS_OID_802_11_RSSI);
 664                OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
 665                OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
 666                OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
 667                OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
 668                OID_STR(RNDIS_OID_802_11_CONFIGURATION);
 669                OID_STR(RNDIS_OID_802_11_POWER_MODE);
 670                OID_STR(RNDIS_OID_802_11_BSSID_LIST);
 671#undef OID_STR
 672        }
 673
 674        return "?";
 675}
 676#else
 677static const char *oid_to_string(u32 oid)
 678{
 679        return "?";
 680}
 681#endif
 682
 683/* translate error code */
 684static int rndis_error_status(__le32 rndis_status)
 685{
 686        int ret = -EINVAL;
 687        switch (le32_to_cpu(rndis_status)) {
 688        case RNDIS_STATUS_SUCCESS:
 689                ret = 0;
 690                break;
 691        case RNDIS_STATUS_FAILURE:
 692        case RNDIS_STATUS_INVALID_DATA:
 693                ret = -EINVAL;
 694                break;
 695        case RNDIS_STATUS_NOT_SUPPORTED:
 696                ret = -EOPNOTSUPP;
 697                break;
 698        case RNDIS_STATUS_ADAPTER_NOT_READY:
 699        case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 700                ret = -EBUSY;
 701                break;
 702        }
 703        return ret;
 704}
 705
 706static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 707{
 708        struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 709        union {
 710                void                    *buf;
 711                struct rndis_msg_hdr    *header;
 712                struct rndis_query      *get;
 713                struct rndis_query_c    *get_c;
 714        } u;
 715        int ret, buflen;
 716        int resplen, respoffs, copylen;
 717
 718        buflen = *len + sizeof(*u.get);
 719        if (buflen < CONTROL_BUFFER_SIZE)
 720                buflen = CONTROL_BUFFER_SIZE;
 721
 722        if (buflen > COMMAND_BUFFER_SIZE) {
 723                u.buf = kmalloc(buflen, GFP_KERNEL);
 724                if (!u.buf)
 725                        return -ENOMEM;
 726        } else {
 727                u.buf = priv->command_buffer;
 728        }
 729
 730        mutex_lock(&priv->command_lock);
 731
 732        memset(u.get, 0, sizeof *u.get);
 733        u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 734        u.get->msg_len = cpu_to_le32(sizeof *u.get);
 735        u.get->oid = cpu_to_le32(oid);
 736
 737        priv->current_command_oid = oid;
 738        ret = rndis_command(dev, u.header, buflen);
 739        priv->current_command_oid = 0;
 740        if (ret < 0)
 741                netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 742                           __func__, oid_to_string(oid), ret,
 743                           le32_to_cpu(u.get_c->status));
 744
 745        if (ret == 0) {
 746                resplen = le32_to_cpu(u.get_c->len);
 747                respoffs = le32_to_cpu(u.get_c->offset) + 8;
 748
 749                if (respoffs > buflen) {
 750                        /* Device returned data offset outside buffer, error. */
 751                        netdev_dbg(dev->net, "%s(%s): received invalid "
 752                                "data offset: %d > %d\n", __func__,
 753                                oid_to_string(oid), respoffs, buflen);
 754
 755                        ret = -EINVAL;
 756                        goto exit_unlock;
 757                }
 758
 759                if ((resplen + respoffs) > buflen) {
 760                        /* Device would have returned more data if buffer would
 761                         * have been big enough. Copy just the bits that we got.
 762                         */
 763                        copylen = buflen - respoffs;
 764                } else {
 765                        copylen = resplen;
 766                }
 767
 768                if (copylen > *len)
 769                        copylen = *len;
 770
 771                memcpy(data, u.buf + respoffs, copylen);
 772
 773                *len = resplen;
 774
 775                ret = rndis_error_status(u.get_c->status);
 776                if (ret < 0)
 777                        netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 778                                   __func__, oid_to_string(oid),
 779                                   le32_to_cpu(u.get_c->status), ret);
 780        }
 781
 782exit_unlock:
 783        mutex_unlock(&priv->command_lock);
 784
 785        if (u.buf != priv->command_buffer)
 786                kfree(u.buf);
 787        return ret;
 788}
 789
 790static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 791                         int len)
 792{
 793        struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 794        union {
 795                void                    *buf;
 796                struct rndis_msg_hdr    *header;
 797                struct rndis_set        *set;
 798                struct rndis_set_c      *set_c;
 799        } u;
 800        int ret, buflen;
 801
 802        buflen = len + sizeof(*u.set);
 803        if (buflen < CONTROL_BUFFER_SIZE)
 804                buflen = CONTROL_BUFFER_SIZE;
 805
 806        if (buflen > COMMAND_BUFFER_SIZE) {
 807                u.buf = kmalloc(buflen, GFP_KERNEL);
 808                if (!u.buf)
 809                        return -ENOMEM;
 810        } else {
 811                u.buf = priv->command_buffer;
 812        }
 813
 814        mutex_lock(&priv->command_lock);
 815
 816        memset(u.set, 0, sizeof *u.set);
 817        u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 818        u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 819        u.set->oid = cpu_to_le32(oid);
 820        u.set->len = cpu_to_le32(len);
 821        u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 822        u.set->handle = cpu_to_le32(0);
 823        memcpy(u.buf + sizeof(*u.set), data, len);
 824
 825        priv->current_command_oid = oid;
 826        ret = rndis_command(dev, u.header, buflen);
 827        priv->current_command_oid = 0;
 828        if (ret < 0)
 829                netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 830                           __func__, oid_to_string(oid), ret,
 831                           le32_to_cpu(u.set_c->status));
 832
 833        if (ret == 0) {
 834                ret = rndis_error_status(u.set_c->status);
 835
 836                if (ret < 0)
 837                        netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 838                                   __func__, oid_to_string(oid),
 839                                   le32_to_cpu(u.set_c->status), ret);
 840        }
 841
 842        mutex_unlock(&priv->command_lock);
 843
 844        if (u.buf != priv->command_buffer)
 845                kfree(u.buf);
 846        return ret;
 847}
 848
 849static int rndis_reset(struct usbnet *usbdev)
 850{
 851        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 852        struct rndis_reset *reset;
 853        int ret;
 854
 855        mutex_lock(&priv->command_lock);
 856
 857        reset = (void *)priv->command_buffer;
 858        memset(reset, 0, sizeof(*reset));
 859        reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 860        reset->msg_len = cpu_to_le32(sizeof(*reset));
 861        priv->current_command_oid = 0;
 862        ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 863
 864        mutex_unlock(&priv->command_lock);
 865
 866        if (ret < 0)
 867                return ret;
 868        return 0;
 869}
 870
 871/*
 872 * Specs say that we can only set config parameters only soon after device
 873 * initialization.
 874 *   value_type: 0 = u32, 2 = unicode string
 875 */
 876static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 877                                                int value_type, void *value)
 878{
 879        struct ndis_config_param *infobuf;
 880        int value_len, info_len, param_len, ret, i;
 881        __le16 *unibuf;
 882        __le32 *dst_value;
 883
 884        if (value_type == 0)
 885                value_len = sizeof(__le32);
 886        else if (value_type == 2)
 887                value_len = strlen(value) * sizeof(__le16);
 888        else
 889                return -EINVAL;
 890
 891        param_len = strlen(param) * sizeof(__le16);
 892        info_len = sizeof(*infobuf) + param_len + value_len;
 893
 894#ifdef DEBUG
 895        info_len += 12;
 896#endif
 897        infobuf = kmalloc(info_len, GFP_KERNEL);
 898        if (!infobuf)
 899                return -ENOMEM;
 900
 901#ifdef DEBUG
 902        info_len -= 12;
 903        /* extra 12 bytes are for padding (debug output) */
 904        memset(infobuf, 0xCC, info_len + 12);
 905#endif
 906
 907        if (value_type == 2)
 908                netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 909                           param, (u8 *)value);
 910        else
 911                netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 912                           param, *(u32 *)value);
 913
 914        infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 915        infobuf->name_length = cpu_to_le32(param_len);
 916        infobuf->type = cpu_to_le32(value_type);
 917        infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 918        infobuf->value_length = cpu_to_le32(value_len);
 919
 920        /* simple string to unicode string conversion */
 921        unibuf = (void *)infobuf + sizeof(*infobuf);
 922        for (i = 0; i < param_len / sizeof(__le16); i++)
 923                unibuf[i] = cpu_to_le16(param[i]);
 924
 925        if (value_type == 2) {
 926                unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 927                for (i = 0; i < value_len / sizeof(__le16); i++)
 928                        unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 929        } else {
 930                dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 931                *dst_value = cpu_to_le32(*(u32 *)value);
 932        }
 933
 934#ifdef DEBUG
 935        netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 936        for (i = 0; i < info_len; i += 12) {
 937                u32 *tmp = (u32 *)((u8 *)infobuf + i);
 938                netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 939                           cpu_to_be32(tmp[0]),
 940                           cpu_to_be32(tmp[1]),
 941                           cpu_to_be32(tmp[2]));
 942        }
 943#endif
 944
 945        ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 946                                                        infobuf, info_len);
 947        if (ret != 0)
 948                netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 949                           ret);
 950
 951        kfree(infobuf);
 952        return ret;
 953}
 954
 955static int rndis_set_config_parameter_str(struct usbnet *dev,
 956                                                char *param, char *value)
 957{
 958        return rndis_set_config_parameter(dev, param, 2, value);
 959}
 960
 961/*
 962 * data conversion functions
 963 */
 964static int level_to_qual(int level)
 965{
 966        int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 967        return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 968}
 969
 970/*
 971 * common functions
 972 */
 973static int set_infra_mode(struct usbnet *usbdev, int mode);
 974static void restore_keys(struct usbnet *usbdev);
 975static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 976                                        bool *matched);
 977
 978static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 979{
 980        __le32 tmp;
 981
 982        /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 983        tmp = cpu_to_le32(1);
 984        return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 985                                                        sizeof(tmp));
 986}
 987
 988static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 989{
 990        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 991        int ret;
 992
 993        ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 994                            ssid, sizeof(*ssid));
 995        if (ret < 0) {
 996                netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 997                return ret;
 998        }
 999        if (ret == 0) {
1000                priv->radio_on = true;
1001                netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1002        }
1003
1004        return ret;
1005}
1006
1007static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1008{
1009        int ret;
1010
1011        ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1012                            bssid, ETH_ALEN);
1013        if (ret < 0) {
1014                netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1015                            bssid, ret);
1016                return ret;
1017        }
1018
1019        return ret;
1020}
1021
1022static int clear_bssid(struct usbnet *usbdev)
1023{
1024        static const u8 broadcast_mac[ETH_ALEN] = {
1025                0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1026        };
1027
1028        return set_bssid(usbdev, broadcast_mac);
1029}
1030
1031static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1032{
1033        int ret, len;
1034
1035        len = ETH_ALEN;
1036        ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1037                              bssid, &len);
1038
1039        if (ret != 0)
1040                eth_zero_addr(bssid);
1041
1042        return ret;
1043}
1044
1045static int get_association_info(struct usbnet *usbdev,
1046                        struct ndis_80211_assoc_info *info, int len)
1047{
1048        return rndis_query_oid(usbdev,
1049                        RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1050                        info, &len);
1051}
1052
1053static bool is_associated(struct usbnet *usbdev)
1054{
1055        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1056        u8 bssid[ETH_ALEN];
1057        int ret;
1058
1059        if (!priv->radio_on)
1060                return false;
1061
1062        ret = get_bssid(usbdev, bssid);
1063
1064        return (ret == 0 && !is_zero_ether_addr(bssid));
1065}
1066
1067static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1068{
1069        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1070        struct ndis_80211_ssid ssid;
1071        int i, ret = 0;
1072
1073        if (priv->radio_on) {
1074                ret = rndis_set_oid(usbdev,
1075                                RNDIS_OID_802_11_DISASSOCIATE,
1076                                NULL, 0);
1077                if (ret == 0) {
1078                        priv->radio_on = false;
1079                        netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1080                                   __func__);
1081
1082                        if (reset_ssid)
1083                                msleep(100);
1084                }
1085        }
1086
1087        /* disassociate causes radio to be turned off; if reset_ssid
1088         * is given, set random ssid to enable radio */
1089        if (reset_ssid) {
1090                /* Set device to infrastructure mode so we don't get ad-hoc
1091                 * 'media connect' indications with the random ssid.
1092                 */
1093                set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1094
1095                ssid.length = cpu_to_le32(sizeof(ssid.essid));
1096                get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1097                ssid.essid[0] = 0x1;
1098                ssid.essid[1] = 0xff;
1099                for (i = 2; i < sizeof(ssid.essid); i++)
1100                        ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1101                ret = set_essid(usbdev, &ssid);
1102        }
1103        return ret;
1104}
1105
1106static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1107                                enum nl80211_auth_type auth_type, int keymgmt)
1108{
1109        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1110        __le32 tmp;
1111        int auth_mode, ret;
1112
1113        netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1114                   __func__, wpa_version, auth_type, keymgmt);
1115
1116        if (wpa_version & NL80211_WPA_VERSION_2) {
1117                if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1118                        auth_mode = NDIS_80211_AUTH_WPA2;
1119                else
1120                        auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1121        } else if (wpa_version & NL80211_WPA_VERSION_1) {
1122                if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1123                        auth_mode = NDIS_80211_AUTH_WPA;
1124                else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1125                        auth_mode = NDIS_80211_AUTH_WPA_PSK;
1126                else
1127                        auth_mode = NDIS_80211_AUTH_WPA_NONE;
1128        } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1129                auth_mode = NDIS_80211_AUTH_SHARED;
1130        else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1131                auth_mode = NDIS_80211_AUTH_OPEN;
1132        else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1133                auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1134        else
1135                return -ENOTSUPP;
1136
1137        tmp = cpu_to_le32(auth_mode);
1138        ret = rndis_set_oid(usbdev,
1139                            RNDIS_OID_802_11_AUTHENTICATION_MODE,
1140                            &tmp, sizeof(tmp));
1141        if (ret != 0) {
1142                netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1143                            ret);
1144                return ret;
1145        }
1146
1147        priv->wpa_version = wpa_version;
1148
1149        return 0;
1150}
1151
1152static int set_priv_filter(struct usbnet *usbdev)
1153{
1154        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155        __le32 tmp;
1156
1157        netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1158                   __func__, priv->wpa_version);
1159
1160        if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1161            priv->wpa_version & NL80211_WPA_VERSION_1)
1162                tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1163        else
1164                tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1165
1166        return rndis_set_oid(usbdev,
1167                             RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1168                             sizeof(tmp));
1169}
1170
1171static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1172{
1173        __le32 tmp;
1174        int encr_mode, ret;
1175
1176        netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1177                   __func__, pairwise, groupwise);
1178
1179        if (pairwise & RNDIS_WLAN_ALG_CCMP)
1180                encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1181        else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1182                encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1183        else if (pairwise & RNDIS_WLAN_ALG_WEP)
1184                encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1185        else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1186                encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1187        else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1188                encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1189        else
1190                encr_mode = NDIS_80211_ENCR_DISABLED;
1191
1192        tmp = cpu_to_le32(encr_mode);
1193        ret = rndis_set_oid(usbdev,
1194                        RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1195                        sizeof(tmp));
1196        if (ret != 0) {
1197                netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1198                            ret);
1199                return ret;
1200        }
1201
1202        return 0;
1203}
1204
1205static int set_infra_mode(struct usbnet *usbdev, int mode)
1206{
1207        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1208        __le32 tmp;
1209        int ret;
1210
1211        netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1212                   __func__, priv->infra_mode);
1213
1214        tmp = cpu_to_le32(mode);
1215        ret = rndis_set_oid(usbdev,
1216                            RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1217                            &tmp, sizeof(tmp));
1218        if (ret != 0) {
1219                netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1220                            ret);
1221                return ret;
1222        }
1223
1224        /* NDIS drivers clear keys when infrastructure mode is
1225         * changed. But Linux tools assume otherwise. So set the
1226         * keys */
1227        restore_keys(usbdev);
1228
1229        priv->infra_mode = mode;
1230        return 0;
1231}
1232
1233static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1234{
1235        __le32 tmp;
1236
1237        netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1238
1239        if (rts_threshold == -1 || rts_threshold > 2347)
1240                rts_threshold = 2347;
1241
1242        tmp = cpu_to_le32(rts_threshold);
1243        return rndis_set_oid(usbdev,
1244                             RNDIS_OID_802_11_RTS_THRESHOLD,
1245                             &tmp, sizeof(tmp));
1246}
1247
1248static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1249{
1250        __le32 tmp;
1251
1252        netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1253
1254        if (frag_threshold < 256 || frag_threshold > 2346)
1255                frag_threshold = 2346;
1256
1257        tmp = cpu_to_le32(frag_threshold);
1258        return rndis_set_oid(usbdev,
1259                        RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1260                        &tmp, sizeof(tmp));
1261}
1262
1263static void set_default_iw_params(struct usbnet *usbdev)
1264{
1265        set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1266        set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1267                                                RNDIS_WLAN_KEY_MGMT_NONE);
1268        set_priv_filter(usbdev);
1269        set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1270}
1271
1272static int deauthenticate(struct usbnet *usbdev)
1273{
1274        int ret;
1275
1276        ret = disassociate(usbdev, true);
1277        set_default_iw_params(usbdev);
1278        return ret;
1279}
1280
1281static int set_channel(struct usbnet *usbdev, int channel)
1282{
1283        struct ndis_80211_conf config;
1284        unsigned int dsconfig;
1285        int len, ret;
1286
1287        netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1288
1289        /* this OID is valid only when not associated */
1290        if (is_associated(usbdev))
1291                return 0;
1292
1293        dsconfig = 1000 *
1294                ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1295
1296        len = sizeof(config);
1297        ret = rndis_query_oid(usbdev,
1298                        RNDIS_OID_802_11_CONFIGURATION,
1299                        &config, &len);
1300        if (ret < 0) {
1301                netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1302                           __func__);
1303                return ret;
1304        }
1305
1306        config.ds_config = cpu_to_le32(dsconfig);
1307        ret = rndis_set_oid(usbdev,
1308                        RNDIS_OID_802_11_CONFIGURATION,
1309                        &config, sizeof(config));
1310
1311        netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1312
1313        return ret;
1314}
1315
1316static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1317                                                     u32 *beacon_period)
1318{
1319        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1320        struct ieee80211_channel *channel;
1321        struct ndis_80211_conf config;
1322        int len, ret;
1323
1324        /* Get channel and beacon interval */
1325        len = sizeof(config);
1326        ret = rndis_query_oid(usbdev,
1327                        RNDIS_OID_802_11_CONFIGURATION,
1328                        &config, &len);
1329        netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1330                                __func__, ret);
1331        if (ret < 0)
1332                return NULL;
1333
1334        channel = ieee80211_get_channel(priv->wdev.wiphy,
1335                                KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1336        if (!channel)
1337                return NULL;
1338
1339        if (beacon_period)
1340                *beacon_period = le32_to_cpu(config.beacon_period);
1341        return channel;
1342}
1343
1344/* index must be 0 - N, as per NDIS  */
1345static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1346                                                                u8 index)
1347{
1348        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1349        struct ndis_80211_wep_key ndis_key;
1350        u32 cipher;
1351        int ret;
1352
1353        netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1354                   __func__, index, key_len);
1355
1356        if (index >= RNDIS_WLAN_NUM_KEYS)
1357                return -EINVAL;
1358
1359        if (key_len == 5)
1360                cipher = WLAN_CIPHER_SUITE_WEP40;
1361        else if (key_len == 13)
1362                cipher = WLAN_CIPHER_SUITE_WEP104;
1363        else
1364                return -EINVAL;
1365
1366        memset(&ndis_key, 0, sizeof(ndis_key));
1367
1368        ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1369        ndis_key.length = cpu_to_le32(key_len);
1370        ndis_key.index = cpu_to_le32(index);
1371        memcpy(&ndis_key.material, key, key_len);
1372
1373        if (index == priv->encr_tx_key_index) {
1374                ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1375                ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1376                                                        RNDIS_WLAN_ALG_NONE);
1377                if (ret)
1378                        netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1379                                    ret);
1380        }
1381
1382        ret = rndis_set_oid(usbdev,
1383                        RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1384                        sizeof(ndis_key));
1385        if (ret != 0) {
1386                netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1387                            index + 1, ret);
1388                return ret;
1389        }
1390
1391        priv->encr_keys[index].len = key_len;
1392        priv->encr_keys[index].cipher = cipher;
1393        memcpy(&priv->encr_keys[index].material, key, key_len);
1394        eth_broadcast_addr(priv->encr_keys[index].bssid);
1395
1396        return 0;
1397}
1398
1399static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1400                        u8 index, const u8 *addr, const u8 *rx_seq,
1401                        int seq_len, u32 cipher, __le32 flags)
1402{
1403        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1404        struct ndis_80211_key ndis_key;
1405        bool is_addr_ok;
1406        int ret;
1407
1408        if (index >= RNDIS_WLAN_NUM_KEYS) {
1409                netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1410                           __func__, index);
1411                return -EINVAL;
1412        }
1413        if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1414                netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1415                           __func__, key_len);
1416                return -EINVAL;
1417        }
1418        if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1419                if (!rx_seq || seq_len <= 0) {
1420                        netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1421                                   __func__);
1422                        return -EINVAL;
1423                }
1424                if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1425                        netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1426                        return -EINVAL;
1427                }
1428        }
1429
1430        is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1431                                        !is_broadcast_ether_addr(addr);
1432        if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1433                netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1434                           __func__, addr);
1435                return -EINVAL;
1436        }
1437
1438        netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1439                   __func__, index,
1440                   !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1441                   !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1442                   !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1443
1444        memset(&ndis_key, 0, sizeof(ndis_key));
1445
1446        ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1447                                sizeof(ndis_key.material) + key_len);
1448        ndis_key.length = cpu_to_le32(key_len);
1449        ndis_key.index = cpu_to_le32(index) | flags;
1450
1451        if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1452                /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1453                 * different order than NDIS spec, so swap the order here. */
1454                memcpy(ndis_key.material, key, 16);
1455                memcpy(ndis_key.material + 16, key + 24, 8);
1456                memcpy(ndis_key.material + 24, key + 16, 8);
1457        } else
1458                memcpy(ndis_key.material, key, key_len);
1459
1460        if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1461                memcpy(ndis_key.rsc, rx_seq, seq_len);
1462
1463        if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1464                /* pairwise key */
1465                memcpy(ndis_key.bssid, addr, ETH_ALEN);
1466        } else {
1467                /* group key */
1468                if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1469                        eth_broadcast_addr(ndis_key.bssid);
1470                else
1471                        get_bssid(usbdev, ndis_key.bssid);
1472        }
1473
1474        ret = rndis_set_oid(usbdev,
1475                        RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1476                        le32_to_cpu(ndis_key.size));
1477        netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1478                   __func__, ret);
1479        if (ret != 0)
1480                return ret;
1481
1482        memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1483        priv->encr_keys[index].len = key_len;
1484        priv->encr_keys[index].cipher = cipher;
1485        memcpy(&priv->encr_keys[index].material, key, key_len);
1486        if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1487                memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1488        else
1489                eth_broadcast_addr(priv->encr_keys[index].bssid);
1490
1491        if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1492                priv->encr_tx_key_index = index;
1493
1494        return 0;
1495}
1496
1497static int restore_key(struct usbnet *usbdev, u8 key_idx)
1498{
1499        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1500        struct rndis_wlan_encr_key key;
1501
1502        if (is_wpa_key(priv, key_idx))
1503                return 0;
1504
1505        key = priv->encr_keys[key_idx];
1506
1507        netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1508
1509        if (key.len == 0)
1510                return 0;
1511
1512        return add_wep_key(usbdev, key.material, key.len, key_idx);
1513}
1514
1515static void restore_keys(struct usbnet *usbdev)
1516{
1517        int i;
1518
1519        for (i = 0; i < 4; i++)
1520                restore_key(usbdev, i);
1521}
1522
1523static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1524{
1525        memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1526}
1527
1528/* remove_key is for both wep and wpa */
1529static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1530{
1531        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1532        struct ndis_80211_remove_key remove_key;
1533        __le32 keyindex;
1534        bool is_wpa;
1535        int ret;
1536
1537        if (index >= RNDIS_WLAN_NUM_KEYS)
1538                return -ENOENT;
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,
1566                                RNDIS_OID_802_11_REMOVE_KEY,
1567                                &remove_key, sizeof(remove_key));
1568                if (ret != 0)
1569                        return ret;
1570        } else {
1571                keyindex = cpu_to_le32(index);
1572                ret = rndis_set_oid(usbdev,
1573                                RNDIS_OID_802_11_REMOVE_WEP,
1574                                &keyindex, sizeof(keyindex));
1575                if (ret != 0) {
1576                        netdev_warn(usbdev->net,
1577                                    "removing encryption key %d failed (%08X)\n",
1578                                    index, ret);
1579                        return ret;
1580                }
1581        }
1582
1583        /* if it is transmit key, disable encryption */
1584        if (index == priv->encr_tx_key_index)
1585                set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1586
1587        return 0;
1588}
1589
1590static void set_multicast_list(struct usbnet *usbdev)
1591{
1592        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1593        struct netdev_hw_addr *ha;
1594        __le32 filter, basefilter;
1595        int ret;
1596        char *mc_addrs = NULL;
1597        int mc_count;
1598
1599        basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1600                                          RNDIS_PACKET_TYPE_BROADCAST);
1601
1602        if (usbdev->net->flags & IFF_PROMISC) {
1603                filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1604                                      RNDIS_PACKET_TYPE_ALL_LOCAL);
1605        } else if (usbdev->net->flags & IFF_ALLMULTI) {
1606                filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1607        }
1608
1609        if (filter != basefilter)
1610                goto set_filter;
1611
1612        /*
1613         * mc_list should be accessed holding the lock, so copy addresses to
1614         * local buffer first.
1615         */
1616        netif_addr_lock_bh(usbdev->net);
1617        mc_count = netdev_mc_count(usbdev->net);
1618        if (mc_count > priv->multicast_size) {
1619                filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1620        } else if (mc_count) {
1621                int i = 0;
1622
1623                mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1624                if (!mc_addrs) {
1625                        netif_addr_unlock_bh(usbdev->net);
1626                        return;
1627                }
1628
1629                netdev_for_each_mc_addr(ha, usbdev->net)
1630                        memcpy(mc_addrs + i++ * ETH_ALEN,
1631                               ha->addr, ETH_ALEN);
1632        }
1633        netif_addr_unlock_bh(usbdev->net);
1634
1635        if (filter != basefilter)
1636                goto set_filter;
1637
1638        if (mc_count) {
1639                ret = rndis_set_oid(usbdev,
1640                                RNDIS_OID_802_3_MULTICAST_LIST,
1641                                mc_addrs, mc_count * ETH_ALEN);
1642                kfree(mc_addrs);
1643                if (ret == 0)
1644                        filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1645                else
1646                        filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1647
1648                netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1649                           mc_count, priv->multicast_size, ret);
1650        }
1651
1652set_filter:
1653        ret = rndis_set_oid(usbdev, RNDIS_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, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1661                   le32_to_cpu(filter), ret);
1662}
1663
1664#ifdef DEBUG
1665static 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
1695static 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
1703static 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, RNDIS_OID_802_11_PMKID,
1720                        pmkids, &len);
1721        if (ret < 0) {
1722                netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1723                                " -> %d\n", __func__, len, max_pmkids, ret);
1724
1725                kfree(pmkids);
1726                return ERR_PTR(ret);
1727        }
1728
1729        if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1730                pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1731
1732        debug_print_pmkids(usbdev, pmkids, __func__);
1733
1734        return pmkids;
1735}
1736
1737static int set_device_pmkids(struct usbnet *usbdev,
1738                                struct ndis_80211_pmkid *pmkids)
1739{
1740        int ret, len, num_pmkids;
1741
1742        num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1743        len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1744        pmkids->length = cpu_to_le32(len);
1745
1746        debug_print_pmkids(usbdev, pmkids, __func__);
1747
1748        ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1749                            le32_to_cpu(pmkids->length));
1750        if (ret < 0) {
1751                netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1752                                "\n", __func__, len, num_pmkids, ret);
1753        }
1754
1755        kfree(pmkids);
1756        return ret;
1757}
1758
1759static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1760                                                struct ndis_80211_pmkid *pmkids,
1761                                                struct cfg80211_pmksa *pmksa,
1762                                                int max_pmkids)
1763{
1764        int i, newlen, err;
1765        unsigned int count;
1766
1767        count = le32_to_cpu(pmkids->bssid_info_count);
1768
1769        if (count > max_pmkids)
1770                count = max_pmkids;
1771
1772        for (i = 0; i < count; i++)
1773                if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1774                                     pmksa->bssid))
1775                        break;
1776
1777        /* pmkid not found */
1778        if (i == count) {
1779                netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1780                                        __func__, pmksa->bssid);
1781                err = -ENOENT;
1782                goto error;
1783        }
1784
1785        for (; i + 1 < count; i++)
1786                pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1787
1788        count--;
1789        newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1790
1791        pmkids->length = cpu_to_le32(newlen);
1792        pmkids->bssid_info_count = cpu_to_le32(count);
1793
1794        return pmkids;
1795error:
1796        kfree(pmkids);
1797        return ERR_PTR(err);
1798}
1799
1800static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1801                                                struct ndis_80211_pmkid *pmkids,
1802                                                struct cfg80211_pmksa *pmksa,
1803                                                int max_pmkids)
1804{
1805        struct ndis_80211_pmkid *new_pmkids;
1806        int i, err, newlen;
1807        unsigned int count;
1808
1809        count = le32_to_cpu(pmkids->bssid_info_count);
1810
1811        if (count > max_pmkids)
1812                count = max_pmkids;
1813
1814        /* update with new pmkid */
1815        for (i = 0; i < count; i++) {
1816                if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1817                                      pmksa->bssid))
1818                        continue;
1819
1820                memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1821                                                                WLAN_PMKID_LEN);
1822
1823                return pmkids;
1824        }
1825
1826        /* out of space, return error */
1827        if (i == max_pmkids) {
1828                netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1829                err = -ENOSPC;
1830                goto error;
1831        }
1832
1833        /* add new pmkid */
1834        newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1835
1836        new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1837        if (!new_pmkids) {
1838                err = -ENOMEM;
1839                goto error;
1840        }
1841        pmkids = new_pmkids;
1842
1843        pmkids->length = cpu_to_le32(newlen);
1844        pmkids->bssid_info_count = cpu_to_le32(count + 1);
1845
1846        memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1847        memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1848
1849        return pmkids;
1850error:
1851        kfree(pmkids);
1852        return ERR_PTR(err);
1853}
1854
1855/*
1856 * cfg80211 ops
1857 */
1858static int rndis_change_virtual_intf(struct wiphy *wiphy,
1859                                        struct net_device *dev,
1860                                        enum nl80211_iftype type,
1861                                        struct vif_params *params)
1862{
1863        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1864        struct usbnet *usbdev = priv->usbdev;
1865        int mode;
1866
1867        switch (type) {
1868        case NL80211_IFTYPE_ADHOC:
1869                mode = NDIS_80211_INFRA_ADHOC;
1870                break;
1871        case NL80211_IFTYPE_STATION:
1872                mode = NDIS_80211_INFRA_INFRA;
1873                break;
1874        default:
1875                return -EINVAL;
1876        }
1877
1878        priv->wdev.iftype = type;
1879
1880        return set_infra_mode(usbdev, mode);
1881}
1882
1883static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1884{
1885        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1886        struct usbnet *usbdev = priv->usbdev;
1887        int err;
1888
1889        if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1890                err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1891                if (err < 0)
1892                        return err;
1893        }
1894
1895        if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1896                err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1897                if (err < 0)
1898                        return err;
1899        }
1900
1901        return 0;
1902}
1903
1904static int rndis_set_tx_power(struct wiphy *wiphy,
1905                              struct wireless_dev *wdev,
1906                              enum nl80211_tx_power_setting type,
1907                              int mbm)
1908{
1909        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1910        struct usbnet *usbdev = priv->usbdev;
1911
1912        netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1913                   __func__, type, mbm);
1914
1915        if (mbm < 0 || (mbm % 100))
1916                return -ENOTSUPP;
1917
1918        /* Device doesn't support changing txpower after initialization, only
1919         * turn off/on radio. Support 'auto' mode and setting same dBm that is
1920         * currently used.
1921         */
1922        if (type == NL80211_TX_POWER_AUTOMATIC ||
1923            MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1924                if (!priv->radio_on)
1925                        disassociate(usbdev, true); /* turn on radio */
1926
1927                return 0;
1928        }
1929
1930        return -ENOTSUPP;
1931}
1932
1933static int rndis_get_tx_power(struct wiphy *wiphy,
1934                              struct wireless_dev *wdev,
1935                              int *dbm)
1936{
1937        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1938        struct usbnet *usbdev = priv->usbdev;
1939
1940        *dbm = get_bcm4320_power_dbm(priv);
1941
1942        netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1943
1944        return 0;
1945}
1946
1947#define SCAN_DELAY_JIFFIES (6 * HZ)
1948static int rndis_scan(struct wiphy *wiphy,
1949                        struct cfg80211_scan_request *request)
1950{
1951        struct net_device *dev = request->wdev->netdev;
1952        struct usbnet *usbdev = netdev_priv(dev);
1953        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1954        int ret;
1955        int delay = SCAN_DELAY_JIFFIES;
1956
1957        netdev_dbg(usbdev->net, "cfg80211.scan\n");
1958
1959        /* Get current bssid list from device before new scan, as new scan
1960         * clears internal bssid list.
1961         */
1962        rndis_check_bssid_list(usbdev, NULL, NULL);
1963
1964        if (priv->scan_request && priv->scan_request != request)
1965                return -EBUSY;
1966
1967        priv->scan_request = request;
1968
1969        ret = rndis_start_bssid_list_scan(usbdev);
1970        if (ret == 0) {
1971                if (priv->device_type == RNDIS_BCM4320A)
1972                        delay = HZ;
1973
1974                /* Wait before retrieving scan results from device */
1975                queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1976        }
1977
1978        return ret;
1979}
1980
1981static bool rndis_bss_info_update(struct usbnet *usbdev,
1982                                  struct ndis_80211_bssid_ex *bssid)
1983{
1984        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1985        struct ieee80211_channel *channel;
1986        struct cfg80211_bss *bss;
1987        s32 signal;
1988        u64 timestamp;
1989        u16 capability;
1990        u16 beacon_interval;
1991        struct ndis_80211_fixed_ies *fixed;
1992        int ie_len, bssid_len;
1993        u8 *ie;
1994
1995        netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1996                   bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1997
1998        /* parse bssid structure */
1999        bssid_len = le32_to_cpu(bssid->length);
2000
2001        if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2002                        sizeof(struct ndis_80211_fixed_ies))
2003                return NULL;
2004
2005        fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2006
2007        ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2008        ie_len = min(bssid_len - (int)sizeof(*bssid),
2009                                        (int)le32_to_cpu(bssid->ie_length));
2010        ie_len -= sizeof(struct ndis_80211_fixed_ies);
2011        if (ie_len < 0)
2012                return NULL;
2013
2014        /* extract data for cfg80211_inform_bss */
2015        channel = ieee80211_get_channel(priv->wdev.wiphy,
2016                        KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2017        if (!channel)
2018                return NULL;
2019
2020        signal = level_to_qual(le32_to_cpu(bssid->rssi));
2021        timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2022        capability = le16_to_cpu(fixed->capabilities);
2023        beacon_interval = le16_to_cpu(fixed->beacon_interval);
2024
2025        bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2026                                  CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2027                                  timestamp, capability, beacon_interval,
2028                                  ie, ie_len, signal, GFP_KERNEL);
2029        cfg80211_put_bss(priv->wdev.wiphy, bss);
2030
2031        return (bss != NULL);
2032}
2033
2034static struct ndis_80211_bssid_ex *next_bssid_list_item(
2035                                        struct ndis_80211_bssid_ex *bssid,
2036                                        int *bssid_len, void *buf, int len)
2037{
2038        void *buf_end, *bssid_end;
2039
2040        buf_end = (char *)buf + len;
2041        bssid_end = (char *)bssid + *bssid_len;
2042
2043        if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2044                *bssid_len = 0;
2045                return NULL;
2046        } else {
2047                bssid = (void *)((char *)bssid + *bssid_len);
2048                *bssid_len = le32_to_cpu(bssid->length);
2049                return bssid;
2050        }
2051}
2052
2053static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2054                                  int bssid_len, void *buf, int len)
2055{
2056        void *buf_end, *bssid_end;
2057
2058        if (!bssid || bssid_len <= 0 || bssid_len > len)
2059                return false;
2060
2061        buf_end = (char *)buf + len;
2062        bssid_end = (char *)bssid + bssid_len;
2063
2064        return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2065}
2066
2067static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2068                                        bool *matched)
2069{
2070        void *buf = NULL;
2071        struct ndis_80211_bssid_list_ex *bssid_list;
2072        struct ndis_80211_bssid_ex *bssid;
2073        int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2074
2075        netdev_dbg(usbdev->net, "%s()\n", __func__);
2076
2077        len = CONTROL_BUFFER_SIZE;
2078resize_buf:
2079        buf = kzalloc(len, GFP_KERNEL);
2080        if (!buf) {
2081                ret = -ENOMEM;
2082                goto out;
2083        }
2084
2085        /* BSSID-list might have got bigger last time we checked, keep
2086         * resizing until it won't get any bigger.
2087         */
2088        new_len = len;
2089        ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2090                              buf, &new_len);
2091        if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2092                goto out;
2093
2094        if (new_len > len) {
2095                len = new_len;
2096                kfree(buf);
2097                goto resize_buf;
2098        }
2099
2100        len = new_len;
2101
2102        bssid_list = buf;
2103        count = le32_to_cpu(bssid_list->num_items);
2104        real_count = 0;
2105        netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2106
2107        bssid_len = 0;
2108        bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2109
2110        /* Device returns incorrect 'num_items'. Workaround by ignoring the
2111         * received 'num_items' and walking through full bssid buffer instead.
2112         */
2113        while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2114                if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2115                    matched) {
2116                        if (ether_addr_equal(bssid->mac, match_bssid))
2117                                *matched = true;
2118                }
2119
2120                real_count++;
2121                bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2122        }
2123
2124        netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2125                                " %d\n", __func__, count, real_count);
2126
2127out:
2128        kfree(buf);
2129        return ret;
2130}
2131
2132static void rndis_get_scan_results(struct work_struct *work)
2133{
2134        struct rndis_wlan_private *priv =
2135                container_of(work, struct rndis_wlan_private, scan_work.work);
2136        struct usbnet *usbdev = priv->usbdev;
2137        struct cfg80211_scan_info info = {};
2138        int ret;
2139
2140        netdev_dbg(usbdev->net, "get_scan_results\n");
2141
2142        if (!priv->scan_request)
2143                return;
2144
2145        ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2146
2147        info.aborted = ret < 0;
2148        cfg80211_scan_done(priv->scan_request, &info);
2149
2150        priv->scan_request = NULL;
2151}
2152
2153static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2154                                        struct cfg80211_connect_params *sme)
2155{
2156        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2157        struct usbnet *usbdev = priv->usbdev;
2158        struct ieee80211_channel *channel = sme->channel;
2159        struct ndis_80211_ssid ssid;
2160        int pairwise = RNDIS_WLAN_ALG_NONE;
2161        int groupwise = RNDIS_WLAN_ALG_NONE;
2162        int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2163        int length, i, ret, chan = -1;
2164
2165        if (channel)
2166                chan = ieee80211_frequency_to_channel(channel->center_freq);
2167
2168        groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2169        for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2170                pairwise |=
2171                        rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2172
2173        if (sme->crypto.n_ciphers_pairwise > 0 &&
2174                        pairwise == RNDIS_WLAN_ALG_NONE) {
2175                netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2176                return -ENOTSUPP;
2177        }
2178
2179        for (i = 0; i < sme->crypto.n_akm_suites; i++)
2180                keymgmt |=
2181                        rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2182
2183        if (sme->crypto.n_akm_suites > 0 &&
2184                        keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2185                netdev_err(usbdev->net, "Invalid keymgmt\n");
2186                return -ENOTSUPP;
2187        }
2188
2189        netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2190                   sme->ssid, sme->bssid, chan,
2191                   sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2192                   groupwise, pairwise, keymgmt);
2193
2194        if (is_associated(usbdev))
2195                disassociate(usbdev, false);
2196
2197        ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2198        if (ret < 0) {
2199                netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2200                           ret);
2201                goto err_turn_radio_on;
2202        }
2203
2204        ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2205                                                                keymgmt);
2206        if (ret < 0) {
2207                netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2208                           ret);
2209                goto err_turn_radio_on;
2210        }
2211
2212        set_priv_filter(usbdev);
2213
2214        ret = set_encr_mode(usbdev, pairwise, groupwise);
2215        if (ret < 0) {
2216                netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2217                           ret);
2218                goto err_turn_radio_on;
2219        }
2220
2221        if (channel) {
2222                ret = set_channel(usbdev, chan);
2223                if (ret < 0) {
2224                        netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2225                                   ret);
2226                        goto err_turn_radio_on;
2227                }
2228        }
2229
2230        if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2231                priv->encr_tx_key_index = sme->key_idx;
2232                ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2233                if (ret < 0) {
2234                        netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2235                                   ret, sme->key_len, sme->key_idx);
2236                        goto err_turn_radio_on;
2237                }
2238        }
2239
2240        if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2241                                !is_broadcast_ether_addr(sme->bssid)) {
2242                ret = set_bssid(usbdev, sme->bssid);
2243                if (ret < 0) {
2244                        netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2245                                   ret);
2246                        goto err_turn_radio_on;
2247                }
2248        } else
2249                clear_bssid(usbdev);
2250
2251        length = sme->ssid_len;
2252        if (length > NDIS_802_11_LENGTH_SSID)
2253                length = NDIS_802_11_LENGTH_SSID;
2254
2255        memset(&ssid, 0, sizeof(ssid));
2256        ssid.length = cpu_to_le32(length);
2257        memcpy(ssid.essid, sme->ssid, length);
2258
2259        /* Pause and purge rx queue, so we don't pass packets before
2260         * 'media connect'-indication.
2261         */
2262        usbnet_pause_rx(usbdev);
2263        usbnet_purge_paused_rxq(usbdev);
2264
2265        ret = set_essid(usbdev, &ssid);
2266        if (ret < 0)
2267                netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2268        return ret;
2269
2270err_turn_radio_on:
2271        disassociate(usbdev, true);
2272
2273        return ret;
2274}
2275
2276static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2277                                                                u16 reason_code)
2278{
2279        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2280        struct usbnet *usbdev = priv->usbdev;
2281
2282        netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2283
2284        priv->connected = false;
2285        eth_zero_addr(priv->bssid);
2286
2287        return deauthenticate(usbdev);
2288}
2289
2290static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2291                                        struct cfg80211_ibss_params *params)
2292{
2293        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2294        struct usbnet *usbdev = priv->usbdev;
2295        struct ieee80211_channel *channel = params->chandef.chan;
2296        struct ndis_80211_ssid ssid;
2297        enum nl80211_auth_type auth_type;
2298        int ret, alg, length, chan = -1;
2299
2300        if (channel)
2301                chan = ieee80211_frequency_to_channel(channel->center_freq);
2302
2303        /* TODO: How to handle ad-hoc encryption?
2304         * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2305         * pre-shared for encryption (open/shared/wpa), is key set before
2306         * join_ibss? Which auth_type to use (not in params)? What about WPA?
2307         */
2308        if (params->privacy) {
2309                auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2310                alg = RNDIS_WLAN_ALG_WEP;
2311        } else {
2312                auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2313                alg = RNDIS_WLAN_ALG_NONE;
2314        }
2315
2316        netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2317                   params->ssid, params->bssid, chan, params->privacy);
2318
2319        if (is_associated(usbdev))
2320                disassociate(usbdev, false);
2321
2322        ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2323        if (ret < 0) {
2324                netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2325                           ret);
2326                goto err_turn_radio_on;
2327        }
2328
2329        ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2330        if (ret < 0) {
2331                netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2332                           ret);
2333                goto err_turn_radio_on;
2334        }
2335
2336        set_priv_filter(usbdev);
2337
2338        ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2339        if (ret < 0) {
2340                netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2341                           ret);
2342                goto err_turn_radio_on;
2343        }
2344
2345        if (channel) {
2346                ret = set_channel(usbdev, chan);
2347                if (ret < 0) {
2348                        netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2349                                   ret);
2350                        goto err_turn_radio_on;
2351                }
2352        }
2353
2354        if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2355                                !is_broadcast_ether_addr(params->bssid)) {
2356                ret = set_bssid(usbdev, params->bssid);
2357                if (ret < 0) {
2358                        netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2359                                   ret);
2360                        goto err_turn_radio_on;
2361                }
2362        } else
2363                clear_bssid(usbdev);
2364
2365        length = params->ssid_len;
2366        if (length > NDIS_802_11_LENGTH_SSID)
2367                length = NDIS_802_11_LENGTH_SSID;
2368
2369        memset(&ssid, 0, sizeof(ssid));
2370        ssid.length = cpu_to_le32(length);
2371        memcpy(ssid.essid, params->ssid, length);
2372
2373        /* Don't need to pause rx queue for ad-hoc. */
2374        usbnet_purge_paused_rxq(usbdev);
2375        usbnet_resume_rx(usbdev);
2376
2377        ret = set_essid(usbdev, &ssid);
2378        if (ret < 0)
2379                netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2380                           ret);
2381        return ret;
2382
2383err_turn_radio_on:
2384        disassociate(usbdev, true);
2385
2386        return ret;
2387}
2388
2389static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2390{
2391        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2392        struct usbnet *usbdev = priv->usbdev;
2393
2394        netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2395
2396        priv->connected = false;
2397        eth_zero_addr(priv->bssid);
2398
2399        return deauthenticate(usbdev);
2400}
2401
2402static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2403                         u8 key_index, bool pairwise, const u8 *mac_addr,
2404                         struct key_params *params)
2405{
2406        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2407        struct usbnet *usbdev = priv->usbdev;
2408        __le32 flags;
2409
2410        netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2411                   __func__, key_index, mac_addr, params->cipher);
2412
2413        switch (params->cipher) {
2414        case WLAN_CIPHER_SUITE_WEP40:
2415        case WLAN_CIPHER_SUITE_WEP104:
2416                return add_wep_key(usbdev, params->key, params->key_len,
2417                                                                key_index);
2418        case WLAN_CIPHER_SUITE_TKIP:
2419        case WLAN_CIPHER_SUITE_CCMP:
2420                flags = 0;
2421
2422                if (params->seq && params->seq_len > 0)
2423                        flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2424                if (mac_addr)
2425                        flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2426                                        NDIS_80211_ADDKEY_TRANSMIT_KEY;
2427
2428                return add_wpa_key(usbdev, params->key, params->key_len,
2429                                key_index, mac_addr, params->seq,
2430                                params->seq_len, params->cipher, flags);
2431        default:
2432                netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2433                           __func__, params->cipher);
2434                return -ENOTSUPP;
2435        }
2436}
2437
2438static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2439                         u8 key_index, bool pairwise, const u8 *mac_addr)
2440{
2441        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2442        struct usbnet *usbdev = priv->usbdev;
2443
2444        netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2445
2446        return remove_key(usbdev, key_index, mac_addr);
2447}
2448
2449static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2450                                 u8 key_index, bool unicast, bool multicast)
2451{
2452        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2453        struct usbnet *usbdev = priv->usbdev;
2454        struct rndis_wlan_encr_key key;
2455
2456        netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2457
2458        if (key_index >= RNDIS_WLAN_NUM_KEYS)
2459                return -ENOENT;
2460
2461        priv->encr_tx_key_index = key_index;
2462
2463        if (is_wpa_key(priv, key_index))
2464                return 0;
2465
2466        key = priv->encr_keys[key_index];
2467
2468        return add_wep_key(usbdev, key.material, key.len, key_index);
2469}
2470
2471static void rndis_fill_station_info(struct usbnet *usbdev,
2472                                                struct station_info *sinfo)
2473{
2474        __le32 linkspeed, rssi;
2475        int ret, len;
2476
2477        memset(sinfo, 0, sizeof(*sinfo));
2478
2479        len = sizeof(linkspeed);
2480        ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2481        if (ret == 0) {
2482                sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2483                sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2484        }
2485
2486        len = sizeof(rssi);
2487        ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2488                              &rssi, &len);
2489        if (ret == 0) {
2490                sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2491                sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2492        }
2493}
2494
2495static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2496                             const u8 *mac, struct station_info *sinfo)
2497{
2498        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2499        struct usbnet *usbdev = priv->usbdev;
2500
2501        if (!ether_addr_equal(priv->bssid, mac))
2502                return -ENOENT;
2503
2504        rndis_fill_station_info(usbdev, sinfo);
2505
2506        return 0;
2507}
2508
2509static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2510                               int idx, u8 *mac, struct station_info *sinfo)
2511{
2512        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2513        struct usbnet *usbdev = priv->usbdev;
2514
2515        if (idx != 0)
2516                return -ENOENT;
2517
2518        memcpy(mac, priv->bssid, ETH_ALEN);
2519
2520        rndis_fill_station_info(usbdev, sinfo);
2521
2522        return 0;
2523}
2524
2525static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2526                                struct cfg80211_pmksa *pmksa)
2527{
2528        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2529        struct usbnet *usbdev = priv->usbdev;
2530        struct ndis_80211_pmkid *pmkids;
2531        u32 *tmp = (u32 *)pmksa->pmkid;
2532
2533        netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2534                        pmksa->bssid,
2535                        cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2536                        cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2537
2538        pmkids = get_device_pmkids(usbdev);
2539        if (IS_ERR(pmkids)) {
2540                /* couldn't read PMKID cache from device */
2541                return PTR_ERR(pmkids);
2542        }
2543
2544        pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2545        if (IS_ERR(pmkids)) {
2546                /* not found, list full, etc */
2547                return PTR_ERR(pmkids);
2548        }
2549
2550        return set_device_pmkids(usbdev, pmkids);
2551}
2552
2553static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2554                                struct cfg80211_pmksa *pmksa)
2555{
2556        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2557        struct usbnet *usbdev = priv->usbdev;
2558        struct ndis_80211_pmkid *pmkids;
2559        u32 *tmp = (u32 *)pmksa->pmkid;
2560
2561        netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2562                        pmksa->bssid,
2563                        cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2564                        cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2565
2566        pmkids = get_device_pmkids(usbdev);
2567        if (IS_ERR(pmkids)) {
2568                /* Couldn't read PMKID cache from device */
2569                return PTR_ERR(pmkids);
2570        }
2571
2572        pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2573        if (IS_ERR(pmkids)) {
2574                /* not found, etc */
2575                return PTR_ERR(pmkids);
2576        }
2577
2578        return set_device_pmkids(usbdev, pmkids);
2579}
2580
2581static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2582{
2583        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2584        struct usbnet *usbdev = priv->usbdev;
2585        struct ndis_80211_pmkid pmkid;
2586
2587        netdev_dbg(usbdev->net, "%s()\n", __func__);
2588
2589        memset(&pmkid, 0, sizeof(pmkid));
2590
2591        pmkid.length = cpu_to_le32(sizeof(pmkid));
2592        pmkid.bssid_info_count = cpu_to_le32(0);
2593
2594        return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2595                             &pmkid, sizeof(pmkid));
2596}
2597
2598static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2599                                bool enabled, int timeout)
2600{
2601        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2602        struct usbnet *usbdev = priv->usbdev;
2603        int power_mode;
2604        __le32 mode;
2605        int ret;
2606
2607        if (priv->device_type != RNDIS_BCM4320B)
2608                return -ENOTSUPP;
2609
2610        netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2611                                enabled ? "enabled" : "disabled",
2612                                timeout);
2613
2614        if (enabled)
2615                power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2616        else
2617                power_mode = NDIS_80211_POWER_MODE_CAM;
2618
2619        if (power_mode == priv->power_mode)
2620                return 0;
2621
2622        priv->power_mode = power_mode;
2623
2624        mode = cpu_to_le32(power_mode);
2625        ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2626                            &mode, sizeof(mode));
2627
2628        netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2629                                __func__, ret);
2630
2631        return ret;
2632}
2633
2634static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2635                                        struct net_device *dev,
2636                                        s32 rssi_thold, u32 rssi_hyst)
2637{
2638        struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2639
2640        priv->cqm_rssi_thold = rssi_thold;
2641        priv->cqm_rssi_hyst = rssi_hyst;
2642        priv->last_cqm_event_rssi = 0;
2643
2644        return 0;
2645}
2646
2647static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2648                                           struct ndis_80211_assoc_info *info)
2649{
2650        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2651        struct ieee80211_channel *channel;
2652        struct ndis_80211_ssid ssid;
2653        struct cfg80211_bss *bss;
2654        s32 signal;
2655        u64 timestamp;
2656        u16 capability;
2657        u32 beacon_period = 0;
2658        __le32 rssi;
2659        u8 ie_buf[34];
2660        int len, ret, ie_len;
2661
2662        /* Get signal quality, in case of error use rssi=0 and ignore error. */
2663        len = sizeof(rssi);
2664        rssi = 0;
2665        ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2666                              &rssi, &len);
2667        signal = level_to_qual(le32_to_cpu(rssi));
2668
2669        netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2670                   "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2671                   level_to_qual(le32_to_cpu(rssi)));
2672
2673        /* Get AP capabilities */
2674        if (info) {
2675                capability = le16_to_cpu(info->resp_ie.capa);
2676        } else {
2677                /* Set atleast ESS/IBSS capability */
2678                capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2679                                WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2680        }
2681
2682        /* Get channel and beacon interval */
2683        channel = get_current_channel(usbdev, &beacon_period);
2684        if (!channel) {
2685                netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2686                                        __func__);
2687                return;
2688        }
2689
2690        /* Get SSID, in case of error, use zero length SSID and ignore error. */
2691        len = sizeof(ssid);
2692        memset(&ssid, 0, sizeof(ssid));
2693        ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2694                              &ssid, &len);
2695        netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2696                                "'%.32s'\n", __func__, ret,
2697                                le32_to_cpu(ssid.length), ssid.essid);
2698
2699        if (le32_to_cpu(ssid.length) > 32)
2700                ssid.length = cpu_to_le32(32);
2701
2702        ie_buf[0] = WLAN_EID_SSID;
2703        ie_buf[1] = le32_to_cpu(ssid.length);
2704        memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2705
2706        ie_len = le32_to_cpu(ssid.length) + 2;
2707
2708        /* no tsf */
2709        timestamp = 0;
2710
2711        netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2712                "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2713                "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2714                bssid, (u32)timestamp, capability, beacon_period, ie_len,
2715                ssid.essid, signal);
2716
2717        bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2718                                  CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2719                                  timestamp, capability, beacon_period,
2720                                  ie_buf, ie_len, signal, GFP_KERNEL);
2721        cfg80211_put_bss(priv->wdev.wiphy, bss);
2722}
2723
2724/*
2725 * workers, indication handlers, device poller
2726 */
2727static 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        unsigned int resp_ie_len, req_ie_len;
2733        unsigned int offset;
2734        u8 *req_ie, *resp_ie;
2735        int ret;
2736        bool roamed = false;
2737        bool match_bss;
2738
2739        if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2740                /* received media connect indication while connected, either
2741                 * device reassociated with same AP or roamed to new. */
2742                roamed = true;
2743        }
2744
2745        req_ie_len = 0;
2746        resp_ie_len = 0;
2747        req_ie = NULL;
2748        resp_ie = NULL;
2749
2750        if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2751                info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2752                if (!info) {
2753                        /* No memory? Try resume work later */
2754                        set_bit(WORK_LINK_UP, &priv->work_pending);
2755                        queue_work(priv->workqueue, &priv->work);
2756                        return;
2757                }
2758
2759                /* Get association info IEs from device. */
2760                ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2761                if (!ret) {
2762                        req_ie_len = le32_to_cpu(info->req_ie_length);
2763                        if (req_ie_len > CONTROL_BUFFER_SIZE)
2764                                req_ie_len = CONTROL_BUFFER_SIZE;
2765                        if (req_ie_len != 0) {
2766                                offset = le32_to_cpu(info->offset_req_ies);
2767
2768                                if (offset > CONTROL_BUFFER_SIZE)
2769                                        offset = CONTROL_BUFFER_SIZE;
2770
2771                                req_ie = (u8 *)info + offset;
2772
2773                                if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2774                                        req_ie_len =
2775                                                CONTROL_BUFFER_SIZE - offset;
2776                        }
2777
2778                        resp_ie_len = le32_to_cpu(info->resp_ie_length);
2779                        if (resp_ie_len > CONTROL_BUFFER_SIZE)
2780                                resp_ie_len = CONTROL_BUFFER_SIZE;
2781                        if (resp_ie_len != 0) {
2782                                offset = le32_to_cpu(info->offset_resp_ies);
2783
2784                                if (offset > CONTROL_BUFFER_SIZE)
2785                                        offset = CONTROL_BUFFER_SIZE;
2786
2787                                resp_ie = (u8 *)info + offset;
2788
2789                                if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2790                                        resp_ie_len =
2791                                                CONTROL_BUFFER_SIZE - offset;
2792                        }
2793                } else {
2794                        /* Since rndis_wlan_craft_connected_bss() might use info
2795                         * later and expects info to contain valid data if
2796                         * non-null, free info and set NULL here.
2797                         */
2798                        kfree(info);
2799                        info = NULL;
2800                }
2801        } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2802                return;
2803
2804        ret = get_bssid(usbdev, bssid);
2805        if (ret < 0)
2806                memset(bssid, 0, sizeof(bssid));
2807
2808        netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2809                   bssid, roamed ? " roamed" : "");
2810
2811        /* Internal bss list in device should contain at least the currently
2812         * connected bss and we can get it to cfg80211 with
2813         * rndis_check_bssid_list().
2814         *
2815         * NDIS spec says: "If the device is associated, but the associated
2816         *  BSSID is not in its BSSID scan list, then the driver must add an
2817         *  entry for the BSSID at the end of the data that it returns in
2818         *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2819         *
2820         * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2821         */
2822        match_bss = false;
2823        rndis_check_bssid_list(usbdev, bssid, &match_bss);
2824
2825        if (!is_zero_ether_addr(bssid) && !match_bss) {
2826                /* Couldn't get bss from device, we need to manually craft bss
2827                 * for cfg80211.
2828                 */
2829                rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2830        }
2831
2832        if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2833                if (!roamed) {
2834                        cfg80211_connect_result(usbdev->net, bssid, req_ie,
2835                                                req_ie_len, resp_ie,
2836                                                resp_ie_len, 0, GFP_KERNEL);
2837                } else {
2838                        struct cfg80211_roam_info roam_info = {
2839                                .channel = get_current_channel(usbdev, NULL),
2840                                .bssid = bssid,
2841                                .req_ie = req_ie,
2842                                .req_ie_len = req_ie_len,
2843                                .resp_ie = resp_ie,
2844                                .resp_ie_len = resp_ie_len,
2845                        };
2846
2847                        cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2848                }
2849        } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2850                cfg80211_ibss_joined(usbdev->net, bssid,
2851                                     get_current_channel(usbdev, NULL),
2852                                     GFP_KERNEL);
2853
2854        kfree(info);
2855
2856        priv->connected = true;
2857        memcpy(priv->bssid, bssid, ETH_ALEN);
2858
2859        usbnet_resume_rx(usbdev);
2860        netif_carrier_on(usbdev->net);
2861}
2862
2863static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2864{
2865        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2866
2867        if (priv->connected) {
2868                priv->connected = false;
2869                eth_zero_addr(priv->bssid);
2870
2871                deauthenticate(usbdev);
2872
2873                cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2874        }
2875
2876        netif_carrier_off(usbdev->net);
2877}
2878
2879static void rndis_wlan_worker(struct work_struct *work)
2880{
2881        struct rndis_wlan_private *priv =
2882                container_of(work, struct rndis_wlan_private, work);
2883        struct usbnet *usbdev = priv->usbdev;
2884
2885        if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2886                rndis_wlan_do_link_up_work(usbdev);
2887
2888        if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2889                rndis_wlan_do_link_down_work(usbdev);
2890
2891        if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2892                set_multicast_list(usbdev);
2893}
2894
2895static void rndis_wlan_set_multicast_list(struct net_device *dev)
2896{
2897        struct usbnet *usbdev = netdev_priv(dev);
2898        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2899
2900        if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2901                return;
2902
2903        set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2904        queue_work(priv->workqueue, &priv->work);
2905}
2906
2907static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2908                                struct ndis_80211_status_indication *indication,
2909                                int len)
2910{
2911        u8 *buf;
2912        const char *type;
2913        int flags, buflen, key_id;
2914        bool pairwise_error, group_error;
2915        struct ndis_80211_auth_request *auth_req;
2916        enum nl80211_key_type key_type;
2917
2918        /* must have at least one array entry */
2919        if (len < offsetof(struct ndis_80211_status_indication, u) +
2920                                sizeof(struct ndis_80211_auth_request)) {
2921                netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2922                            len);
2923                return;
2924        }
2925
2926        buf = (void *)&indication->u.auth_request[0];
2927        buflen = len - offsetof(struct ndis_80211_status_indication, u);
2928
2929        while (buflen >= sizeof(*auth_req)) {
2930                auth_req = (void *)buf;
2931                if (buflen < le32_to_cpu(auth_req->length))
2932                        return;
2933                type = "unknown";
2934                flags = le32_to_cpu(auth_req->flags);
2935                pairwise_error = false;
2936                group_error = false;
2937
2938                if (flags & 0x1)
2939                        type = "reauth request";
2940                if (flags & 0x2)
2941                        type = "key update request";
2942                if (flags & 0x6) {
2943                        pairwise_error = true;
2944                        type = "pairwise_error";
2945                }
2946                if (flags & 0xe) {
2947                        group_error = true;
2948                        type = "group_error";
2949                }
2950
2951                netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2952                            type, le32_to_cpu(auth_req->flags));
2953
2954                if (pairwise_error) {
2955                        key_type = NL80211_KEYTYPE_PAIRWISE;
2956                        key_id = -1;
2957
2958                        cfg80211_michael_mic_failure(usbdev->net,
2959                                                        auth_req->bssid,
2960                                                        key_type, key_id, NULL,
2961                                                        GFP_KERNEL);
2962                }
2963
2964                if (group_error) {
2965                        key_type = NL80211_KEYTYPE_GROUP;
2966                        key_id = -1;
2967
2968                        cfg80211_michael_mic_failure(usbdev->net,
2969                                                        auth_req->bssid,
2970                                                        key_type, key_id, NULL,
2971                                                        GFP_KERNEL);
2972                }
2973
2974                buflen -= le32_to_cpu(auth_req->length);
2975                buf += le32_to_cpu(auth_req->length);
2976        }
2977}
2978
2979static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2980                                struct ndis_80211_status_indication *indication,
2981                                int len)
2982{
2983        struct ndis_80211_pmkid_cand_list *cand_list;
2984        int list_len, expected_len, i;
2985
2986        if (len < offsetof(struct ndis_80211_status_indication, u) +
2987                                sizeof(struct ndis_80211_pmkid_cand_list)) {
2988                netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2989                            len);
2990                return;
2991        }
2992
2993        list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2994                        sizeof(struct ndis_80211_pmkid_candidate);
2995        expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2996                        offsetof(struct ndis_80211_status_indication, u);
2997
2998        if (len < expected_len) {
2999                netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
3000                            len, expected_len);
3001                return;
3002        }
3003
3004        cand_list = &indication->u.cand_list;
3005
3006        netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
3007                    le32_to_cpu(cand_list->version),
3008                    le32_to_cpu(cand_list->num_candidates));
3009
3010        if (le32_to_cpu(cand_list->version) != 1)
3011                return;
3012
3013        for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3014                struct ndis_80211_pmkid_candidate *cand =
3015                                                &cand_list->candidate_list[i];
3016                bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3017
3018                netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3019                           i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3020
3021                cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3022                                                preauth, GFP_ATOMIC);
3023        }
3024}
3025
3026static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3027                        struct rndis_indicate *msg, int buflen)
3028{
3029        struct ndis_80211_status_indication *indication;
3030        unsigned int len, offset;
3031
3032        offset = offsetof(struct rndis_indicate, status) +
3033                        le32_to_cpu(msg->offset);
3034        len = le32_to_cpu(msg->length);
3035
3036        if (len < 8) {
3037                netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3038                            len);
3039                return;
3040        }
3041
3042        if (len > buflen || offset > buflen || offset + len > buflen) {
3043                netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3044                            offset + len, buflen);
3045                return;
3046        }
3047
3048        indication = (void *)((u8 *)msg + offset);
3049
3050        switch (le32_to_cpu(indication->status_type)) {
3051        case NDIS_80211_STATUSTYPE_RADIOSTATE:
3052                netdev_info(usbdev->net, "radio state indication: %i\n",
3053                            le32_to_cpu(indication->u.radio_status));
3054                return;
3055
3056        case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3057                netdev_info(usbdev->net, "media stream mode indication: %i\n",
3058                            le32_to_cpu(indication->u.media_stream_mode));
3059                return;
3060
3061        case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3062                rndis_wlan_auth_indication(usbdev, indication, len);
3063                return;
3064
3065        case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3066                rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3067                return;
3068
3069        default:
3070                netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3071                            le32_to_cpu(indication->status_type));
3072        }
3073}
3074
3075static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3076{
3077        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3078        struct rndis_indicate *msg = ind;
3079
3080        switch (le32_to_cpu(msg->status)) {
3081        case RNDIS_STATUS_MEDIA_CONNECT:
3082                if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3083                        /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3084                         * "media connect" indications which confuses driver
3085                         * and userspace to think that device is
3086                         * roaming/reassociating when it isn't.
3087                         */
3088                        netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3089                        return;
3090                }
3091
3092                usbnet_pause_rx(usbdev);
3093
3094                netdev_info(usbdev->net, "media connect\n");
3095
3096                /* queue work to avoid recursive calls into rndis_command */
3097                set_bit(WORK_LINK_UP, &priv->work_pending);
3098                queue_work(priv->workqueue, &priv->work);
3099                break;
3100
3101        case RNDIS_STATUS_MEDIA_DISCONNECT:
3102                netdev_info(usbdev->net, "media disconnect\n");
3103
3104                /* queue work to avoid recursive calls into rndis_command */
3105                set_bit(WORK_LINK_DOWN, &priv->work_pending);
3106                queue_work(priv->workqueue, &priv->work);
3107                break;
3108
3109        case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3110                rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3111                break;
3112
3113        default:
3114                netdev_info(usbdev->net, "indication: 0x%08x\n",
3115                            le32_to_cpu(msg->status));
3116                break;
3117        }
3118}
3119
3120static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3121{
3122        struct {
3123                __le32  num_items;
3124                __le32  items[8];
3125        } networks_supported;
3126        struct ndis_80211_capability *caps;
3127        u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3128        int len, retval, i, n;
3129        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3130
3131        /* determine supported modes */
3132        len = sizeof(networks_supported);
3133        retval = rndis_query_oid(usbdev,
3134                                 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3135                                 &networks_supported, &len);
3136        if (retval >= 0) {
3137                n = le32_to_cpu(networks_supported.num_items);
3138                if (n > 8)
3139                        n = 8;
3140                for (i = 0; i < n; i++) {
3141                        switch (le32_to_cpu(networks_supported.items[i])) {
3142                        case NDIS_80211_TYPE_FREQ_HOP:
3143                        case NDIS_80211_TYPE_DIRECT_SEQ:
3144                                priv->caps |= CAP_MODE_80211B;
3145                                break;
3146                        case NDIS_80211_TYPE_OFDM_A:
3147                                priv->caps |= CAP_MODE_80211A;
3148                                break;
3149                        case NDIS_80211_TYPE_OFDM_G:
3150                                priv->caps |= CAP_MODE_80211G;
3151                                break;
3152                        }
3153                }
3154        }
3155
3156        /* get device 802.11 capabilities, number of PMKIDs */
3157        caps = (struct ndis_80211_capability *)caps_buf;
3158        len = sizeof(caps_buf);
3159        retval = rndis_query_oid(usbdev,
3160                                 RNDIS_OID_802_11_CAPABILITY,
3161                                 caps, &len);
3162        if (retval >= 0) {
3163                netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3164                                "ver %d, pmkids %d, auth-encr-pairs %d\n",
3165                                le32_to_cpu(caps->length),
3166                                le32_to_cpu(caps->version),
3167                                le32_to_cpu(caps->num_pmkids),
3168                                le32_to_cpu(caps->num_auth_encr_pair));
3169                wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3170        } else
3171                wiphy->max_num_pmkids = 0;
3172
3173        return retval;
3174}
3175
3176static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3177{
3178        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3179        enum nl80211_cqm_rssi_threshold_event event;
3180        int thold, hyst, last_event;
3181
3182        if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3183                return;
3184        if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3185                return;
3186
3187        last_event = priv->last_cqm_event_rssi;
3188        thold = priv->cqm_rssi_thold;
3189        hyst = priv->cqm_rssi_hyst;
3190
3191        if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3192                event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3193        else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3194                event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3195        else
3196                return;
3197
3198        priv->last_cqm_event_rssi = rssi;
3199        cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3200}
3201
3202#define DEVICE_POLLER_JIFFIES (HZ)
3203static void rndis_device_poller(struct work_struct *work)
3204{
3205        struct rndis_wlan_private *priv =
3206                container_of(work, struct rndis_wlan_private,
3207                                                        dev_poller_work.work);
3208        struct usbnet *usbdev = priv->usbdev;
3209        __le32 rssi, tmp;
3210        int len, ret, j;
3211        int update_jiffies = DEVICE_POLLER_JIFFIES;
3212        void *buf;
3213
3214        /* Only check/do workaround when connected. Calling is_associated()
3215         * also polls device with rndis_command() and catches for media link
3216         * indications.
3217         */
3218        if (!is_associated(usbdev)) {
3219                /* Workaround bad scanning in BCM4320a devices with active
3220                 * background scanning when not associated.
3221                 */
3222                if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3223                    !priv->scan_request) {
3224                        /* Get previous scan results */
3225                        rndis_check_bssid_list(usbdev, NULL, NULL);
3226
3227                        /* Initiate new scan */
3228                        rndis_start_bssid_list_scan(usbdev);
3229                }
3230
3231                goto end;
3232        }
3233
3234        len = sizeof(rssi);
3235        ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3236                              &rssi, &len);
3237        if (ret == 0) {
3238                priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3239                rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3240        }
3241
3242        netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3243                   ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3244
3245        /* Workaround transfer stalls on poor quality links.
3246         * TODO: find right way to fix these stalls (as stalls do not happen
3247         * with ndiswrapper/windows driver). */
3248        if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3249                /* Decrease stats worker interval to catch stalls.
3250                 * faster. Faster than 400-500ms causes packet loss,
3251                 * Slower doesn't catch stalls fast enough.
3252                 */
3253                j = msecs_to_jiffies(priv->param_workaround_interval);
3254                if (j > DEVICE_POLLER_JIFFIES)
3255                        j = DEVICE_POLLER_JIFFIES;
3256                else if (j <= 0)
3257                        j = 1;
3258                update_jiffies = j;
3259
3260                /* Send scan OID. Use of both OIDs is required to get device
3261                 * working.
3262                 */
3263                tmp = cpu_to_le32(1);
3264                rndis_set_oid(usbdev,
3265                              RNDIS_OID_802_11_BSSID_LIST_SCAN,
3266                              &tmp, sizeof(tmp));
3267
3268                len = CONTROL_BUFFER_SIZE;
3269                buf = kmalloc(len, GFP_KERNEL);
3270                if (!buf)
3271                        goto end;
3272
3273                rndis_query_oid(usbdev,
3274                                RNDIS_OID_802_11_BSSID_LIST,
3275                                buf, &len);
3276                kfree(buf);
3277        }
3278
3279end:
3280        if (update_jiffies >= HZ)
3281                update_jiffies = round_jiffies_relative(update_jiffies);
3282        else {
3283                j = round_jiffies_relative(update_jiffies);
3284                if (abs(j - update_jiffies) <= 10)
3285                        update_jiffies = j;
3286        }
3287
3288        queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3289                                                                update_jiffies);
3290}
3291
3292/*
3293 * driver/device initialization
3294 */
3295static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3296{
3297        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3298
3299        priv->device_type = device_type;
3300
3301        priv->param_country[0] = modparam_country[0];
3302        priv->param_country[1] = modparam_country[1];
3303        priv->param_country[2] = 0;
3304        priv->param_frameburst   = modparam_frameburst;
3305        priv->param_afterburner  = modparam_afterburner;
3306        priv->param_power_save   = modparam_power_save;
3307        priv->param_power_output = modparam_power_output;
3308        priv->param_roamtrigger  = modparam_roamtrigger;
3309        priv->param_roamdelta    = modparam_roamdelta;
3310
3311        priv->param_country[0] = toupper(priv->param_country[0]);
3312        priv->param_country[1] = toupper(priv->param_country[1]);
3313        /* doesn't support EU as country code, use FI instead */
3314        if (!strcmp(priv->param_country, "EU"))
3315                strcpy(priv->param_country, "FI");
3316
3317        if (priv->param_power_save < 0)
3318                priv->param_power_save = 0;
3319        else if (priv->param_power_save > 2)
3320                priv->param_power_save = 2;
3321
3322        if (priv->param_power_output < 0)
3323                priv->param_power_output = 0;
3324        else if (priv->param_power_output > 3)
3325                priv->param_power_output = 3;
3326
3327        if (priv->param_roamtrigger < -80)
3328                priv->param_roamtrigger = -80;
3329        else if (priv->param_roamtrigger > -60)
3330                priv->param_roamtrigger = -60;
3331
3332        if (priv->param_roamdelta < 0)
3333                priv->param_roamdelta = 0;
3334        else if (priv->param_roamdelta > 2)
3335                priv->param_roamdelta = 2;
3336
3337        if (modparam_workaround_interval < 0)
3338                priv->param_workaround_interval = 500;
3339        else
3340                priv->param_workaround_interval = modparam_workaround_interval;
3341}
3342
3343static int unknown_early_init(struct usbnet *usbdev)
3344{
3345        /* copy module parameters for unknown so that iwconfig reports txpower
3346         * and workaround parameter is copied to private structure correctly.
3347         */
3348        rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3349
3350        /* This is unknown device, so do not try set configuration parameters.
3351         */
3352
3353        return 0;
3354}
3355
3356static int bcm4320a_early_init(struct usbnet *usbdev)
3357{
3358        /* copy module parameters for bcm4320a so that iwconfig reports txpower
3359         * and workaround parameter is copied to private structure correctly.
3360         */
3361        rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3362
3363        /* bcm4320a doesn't handle configuration parameters well. Try
3364         * set any and you get partially zeroed mac and broken device.
3365         */
3366
3367        return 0;
3368}
3369
3370static int bcm4320b_early_init(struct usbnet *usbdev)
3371{
3372        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3373        char buf[8];
3374
3375        rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3376
3377        /* Early initialization settings, setting these won't have effect
3378         * if called after generic_rndis_bind().
3379         */
3380
3381        rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3382        rndis_set_config_parameter_str(usbdev, "FrameBursting",
3383                                        priv->param_frameburst ? "1" : "0");
3384        rndis_set_config_parameter_str(usbdev, "Afterburner",
3385                                        priv->param_afterburner ? "1" : "0");
3386        sprintf(buf, "%d", priv->param_power_save);
3387        rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3388        sprintf(buf, "%d", priv->param_power_output);
3389        rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3390        sprintf(buf, "%d", priv->param_roamtrigger);
3391        rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3392        sprintf(buf, "%d", priv->param_roamdelta);
3393        rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3394
3395        return 0;
3396}
3397
3398/* same as rndis_netdev_ops but with local multicast handler */
3399static const struct net_device_ops rndis_wlan_netdev_ops = {
3400        .ndo_open               = usbnet_open,
3401        .ndo_stop               = usbnet_stop,
3402        .ndo_start_xmit         = usbnet_start_xmit,
3403        .ndo_tx_timeout         = usbnet_tx_timeout,
3404        .ndo_get_stats64        = usbnet_get_stats64,
3405        .ndo_set_mac_address    = eth_mac_addr,
3406        .ndo_validate_addr      = eth_validate_addr,
3407        .ndo_set_rx_mode        = rndis_wlan_set_multicast_list,
3408};
3409
3410static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3411{
3412        struct wiphy *wiphy;
3413        struct rndis_wlan_private *priv;
3414        int retval, len;
3415        __le32 tmp;
3416
3417        /* allocate wiphy and rndis private data
3418         * NOTE: We only support a single virtual interface, so wiphy
3419         * and wireless_dev are somewhat synonymous for this device.
3420         */
3421        wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3422        if (!wiphy)
3423                return -ENOMEM;
3424
3425        priv = wiphy_priv(wiphy);
3426        usbdev->net->ieee80211_ptr = &priv->wdev;
3427        priv->wdev.wiphy = wiphy;
3428        priv->wdev.iftype = NL80211_IFTYPE_STATION;
3429
3430        /* These have to be initialized before calling generic_rndis_bind().
3431         * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3432         */
3433        usbdev->driver_priv = priv;
3434        priv->usbdev = usbdev;
3435
3436        mutex_init(&priv->command_lock);
3437
3438        /* because rndis_command() sleeps we need to use workqueue */
3439        priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3440        if (!priv->workqueue) {
3441                wiphy_free(wiphy);
3442                return -ENOMEM;
3443        }
3444        INIT_WORK(&priv->work, rndis_wlan_worker);
3445        INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3446        INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3447
3448        /* try bind rndis_host */
3449        retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3450        if (retval < 0)
3451                goto fail;
3452
3453        /* generic_rndis_bind set packet filter to multicast_all+
3454         * promisc mode which doesn't work well for our devices (device
3455         * picks up rssi to closest station instead of to access point).
3456         *
3457         * rndis_host wants to avoid all OID as much as possible
3458         * so do promisc/multicast handling in rndis_wlan.
3459         */
3460        usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3461
3462        tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3463        retval = rndis_set_oid(usbdev,
3464                               RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3465                               &tmp, sizeof(tmp));
3466
3467        len = sizeof(tmp);
3468        retval = rndis_query_oid(usbdev,
3469                                 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3470                                 &tmp, &len);
3471        priv->multicast_size = le32_to_cpu(tmp);
3472        if (retval < 0 || priv->multicast_size < 0)
3473                priv->multicast_size = 0;
3474        if (priv->multicast_size > 0)
3475                usbdev->net->flags |= IFF_MULTICAST;
3476        else
3477                usbdev->net->flags &= ~IFF_MULTICAST;
3478
3479        /* fill-out wiphy structure and register w/ cfg80211 */
3480        memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3481        wiphy->privid = rndis_wiphy_privid;
3482        wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3483                                        | BIT(NL80211_IFTYPE_ADHOC);
3484        wiphy->max_scan_ssids = 1;
3485
3486        /* TODO: fill-out band/encr information based on priv->caps */
3487        rndis_wlan_get_caps(usbdev, wiphy);
3488
3489        memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3490        memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3491        priv->band.channels = priv->channels;
3492        priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3493        priv->band.bitrates = priv->rates;
3494        priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3495        wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3496        wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3497
3498        memcpy(priv->cipher_suites, rndis_cipher_suites,
3499                                                sizeof(rndis_cipher_suites));
3500        wiphy->cipher_suites = priv->cipher_suites;
3501        wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3502
3503        set_wiphy_dev(wiphy, &usbdev->udev->dev);
3504
3505        if (wiphy_register(wiphy)) {
3506                retval = -ENODEV;
3507                goto fail;
3508        }
3509
3510        set_default_iw_params(usbdev);
3511
3512        priv->power_mode = -1;
3513
3514        /* set default rts/frag */
3515        rndis_set_wiphy_params(wiphy,
3516                        WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3517
3518        /* turn radio off on init */
3519        priv->radio_on = false;
3520        disassociate(usbdev, false);
3521        netif_carrier_off(usbdev->net);
3522
3523        return 0;
3524
3525fail:
3526        cancel_delayed_work_sync(&priv->dev_poller_work);
3527        cancel_delayed_work_sync(&priv->scan_work);
3528        cancel_work_sync(&priv->work);
3529        flush_workqueue(priv->workqueue);
3530        destroy_workqueue(priv->workqueue);
3531
3532        wiphy_free(wiphy);
3533        return retval;
3534}
3535
3536static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3537{
3538        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3539
3540        /* turn radio off */
3541        disassociate(usbdev, false);
3542
3543        cancel_delayed_work_sync(&priv->dev_poller_work);
3544        cancel_delayed_work_sync(&priv->scan_work);
3545        cancel_work_sync(&priv->work);
3546        flush_workqueue(priv->workqueue);
3547        destroy_workqueue(priv->workqueue);
3548
3549        rndis_unbind(usbdev, intf);
3550
3551        wiphy_unregister(priv->wdev.wiphy);
3552        wiphy_free(priv->wdev.wiphy);
3553}
3554
3555static int rndis_wlan_reset(struct usbnet *usbdev)
3556{
3557        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3558        int retval;
3559
3560        netdev_dbg(usbdev->net, "%s()\n", __func__);
3561
3562        retval = rndis_reset(usbdev);
3563        if (retval)
3564                netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3565
3566        /* rndis_reset cleared multicast list, so restore here.
3567           (set_multicast_list() also turns on current packet filter) */
3568        set_multicast_list(usbdev);
3569
3570        queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3571                round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3572
3573        return deauthenticate(usbdev);
3574}
3575
3576static int rndis_wlan_stop(struct usbnet *usbdev)
3577{
3578        struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3579        int retval;
3580        __le32 filter;
3581
3582        netdev_dbg(usbdev->net, "%s()\n", __func__);
3583
3584        retval = disassociate(usbdev, false);
3585
3586        priv->work_pending = 0;
3587        cancel_delayed_work_sync(&priv->dev_poller_work);
3588        cancel_delayed_work_sync(&priv->scan_work);
3589        cancel_work_sync(&priv->work);
3590        flush_workqueue(priv->workqueue);
3591
3592        if (priv->scan_request) {
3593                struct cfg80211_scan_info info = {
3594                        .aborted = true,
3595                };
3596
3597                cfg80211_scan_done(priv->scan_request, &info);
3598                priv->scan_request = NULL;
3599        }
3600
3601        /* Set current packet filter zero to block receiving data packets from
3602           device. */
3603        filter = 0;
3604        rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3605                                                                sizeof(filter));
3606
3607        return retval;
3608}
3609
3610static const struct driver_info bcm4320b_info = {
3611        .description =  "Wireless RNDIS device, BCM4320b based",
3612        .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3613                                FLAG_AVOID_UNLINK_URBS,
3614        .bind =         rndis_wlan_bind,
3615        .unbind =       rndis_wlan_unbind,
3616        .status =       rndis_status,
3617        .rx_fixup =     rndis_rx_fixup,
3618        .tx_fixup =     rndis_tx_fixup,
3619        .reset =        rndis_wlan_reset,
3620        .stop =         rndis_wlan_stop,
3621        .early_init =   bcm4320b_early_init,
3622        .indication =   rndis_wlan_indication,
3623};
3624
3625static const struct driver_info bcm4320a_info = {
3626        .description =  "Wireless RNDIS device, BCM4320a based",
3627        .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3628                                FLAG_AVOID_UNLINK_URBS,
3629        .bind =         rndis_wlan_bind,
3630        .unbind =       rndis_wlan_unbind,
3631        .status =       rndis_status,
3632        .rx_fixup =     rndis_rx_fixup,
3633        .tx_fixup =     rndis_tx_fixup,
3634        .reset =        rndis_wlan_reset,
3635        .stop =         rndis_wlan_stop,
3636        .early_init =   bcm4320a_early_init,
3637        .indication =   rndis_wlan_indication,
3638};
3639
3640static const struct driver_info rndis_wlan_info = {
3641        .description =  "Wireless RNDIS device",
3642        .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3643                                FLAG_AVOID_UNLINK_URBS,
3644        .bind =         rndis_wlan_bind,
3645        .unbind =       rndis_wlan_unbind,
3646        .status =       rndis_status,
3647        .rx_fixup =     rndis_rx_fixup,
3648        .tx_fixup =     rndis_tx_fixup,
3649        .reset =        rndis_wlan_reset,
3650        .stop =         rndis_wlan_stop,
3651        .early_init =   unknown_early_init,
3652        .indication =   rndis_wlan_indication,
3653};
3654
3655/*-------------------------------------------------------------------------*/
3656
3657static const struct usb_device_id products [] = {
3658#define RNDIS_MASTER_INTERFACE \
3659        .bInterfaceClass        = USB_CLASS_COMM, \
3660        .bInterfaceSubClass     = 2 /* ACM */, \
3661        .bInterfaceProtocol     = 0x0ff
3662
3663/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3664 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3665 */
3666{
3667        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3668                          | USB_DEVICE_ID_MATCH_DEVICE,
3669        .idVendor               = 0x0411,
3670        .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3671        RNDIS_MASTER_INTERFACE,
3672        .driver_info            = (unsigned long) &bcm4320b_info,
3673}, {
3674        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3675                          | USB_DEVICE_ID_MATCH_DEVICE,
3676        .idVendor               = 0x0baf,
3677        .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3678        RNDIS_MASTER_INTERFACE,
3679        .driver_info            = (unsigned long) &bcm4320b_info,
3680}, {
3681        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3682                          | USB_DEVICE_ID_MATCH_DEVICE,
3683        .idVendor               = 0x050d,
3684        .idProduct              = 0x011b,       /* Belkin F5D7051 */
3685        RNDIS_MASTER_INTERFACE,
3686        .driver_info            = (unsigned long) &bcm4320b_info,
3687}, {
3688        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3689                          | USB_DEVICE_ID_MATCH_DEVICE,
3690        .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3691        .idProduct              = 0x011b,       /* Belkin F5D7051 */
3692        RNDIS_MASTER_INTERFACE,
3693        .driver_info            = (unsigned long) &bcm4320b_info,
3694}, {
3695        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3696                          | USB_DEVICE_ID_MATCH_DEVICE,
3697        .idVendor               = 0x13b1,
3698        .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3699        RNDIS_MASTER_INTERFACE,
3700        .driver_info            = (unsigned long) &bcm4320b_info,
3701}, {
3702        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3703                          | USB_DEVICE_ID_MATCH_DEVICE,
3704        .idVendor               = 0x13b1,
3705        .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3706        RNDIS_MASTER_INTERFACE,
3707        .driver_info            = (unsigned long) &bcm4320b_info,
3708}, {
3709        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3710                          | USB_DEVICE_ID_MATCH_DEVICE,
3711        .idVendor               = 0x0b05,
3712        .idProduct              = 0x1717,       /* Asus WL169gE */
3713        RNDIS_MASTER_INTERFACE,
3714        .driver_info            = (unsigned long) &bcm4320b_info,
3715}, {
3716        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3717                          | USB_DEVICE_ID_MATCH_DEVICE,
3718        .idVendor               = 0x0a5c,
3719        .idProduct              = 0xd11b,       /* Eminent EM4045 */
3720        RNDIS_MASTER_INTERFACE,
3721        .driver_info            = (unsigned long) &bcm4320b_info,
3722}, {
3723        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3724                          | USB_DEVICE_ID_MATCH_DEVICE,
3725        .idVendor               = 0x1690,
3726        .idProduct              = 0x0715,       /* BT Voyager 1055 */
3727        RNDIS_MASTER_INTERFACE,
3728        .driver_info            = (unsigned long) &bcm4320b_info,
3729},
3730/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3731 * parameters available, hardware probably contain older firmware version with
3732 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3733 */
3734{
3735        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3736                          | USB_DEVICE_ID_MATCH_DEVICE,
3737        .idVendor               = 0x13b1,
3738        .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3739        RNDIS_MASTER_INTERFACE,
3740        .driver_info            = (unsigned long) &bcm4320a_info,
3741}, {
3742        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3743                          | USB_DEVICE_ID_MATCH_DEVICE,
3744        .idVendor               = 0x0baf,
3745        .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3746        RNDIS_MASTER_INTERFACE,
3747        .driver_info            = (unsigned long) &bcm4320a_info,
3748}, {
3749        .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3750                          | USB_DEVICE_ID_MATCH_DEVICE,
3751        .idVendor               = 0x0411,
3752        .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3753        RNDIS_MASTER_INTERFACE,
3754        .driver_info            = (unsigned long) &bcm4320a_info,
3755},
3756/* Generic Wireless RNDIS devices that we don't have exact
3757 * idVendor/idProduct/chip yet.
3758 */
3759{
3760        /* RNDIS is MSFT's un-official variant of CDC ACM */
3761        USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3762        .driver_info = (unsigned long) &rndis_wlan_info,
3763}, {
3764        /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3765        USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3766        .driver_info = (unsigned long) &rndis_wlan_info,
3767},
3768        { },            // END
3769};
3770MODULE_DEVICE_TABLE(usb, products);
3771
3772static struct usb_driver rndis_wlan_driver = {
3773        .name =         "rndis_wlan",
3774        .id_table =     products,
3775        .probe =        usbnet_probe,
3776        .disconnect =   usbnet_disconnect,
3777        .suspend =      usbnet_suspend,
3778        .resume =       usbnet_resume,
3779        .disable_hub_initiated_lpm = 1,
3780};
3781
3782module_usb_driver(rndis_wlan_driver);
3783
3784MODULE_AUTHOR("Bjorge Dijkstra");
3785MODULE_AUTHOR("Jussi Kivilinna");
3786MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3787MODULE_LICENSE("GPL");
3788
3789