net/wireless/rndis_wlan.c

0001 // SPDX-License-Identifier: GPL-2.0-or-later
0002 /*
0003  * Driver for RNDIS based wireless USB devices.
0004  *
0005  * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
0006  * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi>
0007  *
0008  *  Portions of this file are based on NDISwrapper project,
0009  *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
0010  *  http://ndiswrapper.sourceforge.net/
0011  */
0012
0013 // #define  DEBUG           // error path messages, extra info
0014 // #define  VERBOSE         // more; success messages
0015
0016 #include <linux/module.h>
0017 #include <linux/netdevice.h>
0018 #include <linux/etherdevice.h>
0019 #include <linux/ethtool.h>
0020 #include <linux/workqueue.h>
0021 #include <linux/mutex.h>
0022 #include <linux/mii.h>
0023 #include <linux/usb.h>
0024 #include <linux/usb/cdc.h>
0025 #include <linux/ieee80211.h>
0026 #include <linux/if_arp.h>
0027 #include <linux/ctype.h>
0028 #include <linux/spinlock.h>
0029 #include <linux/slab.h>
0030 #include <net/cfg80211.h>
0031 #include <linux/usb/usbnet.h>
0032 #include <linux/usb/rndis_host.h>
0033
0034
0035 /* NOTE: All these are settings for Broadcom chipset */
0036 static char modparam_country[4] = "EU";
0037 module_param_string(country, modparam_country, 4, 0444);
0038 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
0039
0040 static int modparam_frameburst = 1;
0041 module_param_named(frameburst, modparam_frameburst, int, 0444);
0042 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
0043
0044 static int modparam_afterburner = 0;
0045 module_param_named(afterburner, modparam_afterburner, int, 0444);
0046 MODULE_PARM_DESC(afterburner,
0047     "enable afterburner aka '125 High Speed Mode' (default: off)");
0048
0049 static int modparam_power_save = 0;
0050 module_param_named(power_save, modparam_power_save, int, 0444);
0051 MODULE_PARM_DESC(power_save,
0052     "set power save mode: 0=off, 1=on, 2=fast (default: off)");
0053
0054 static int modparam_power_output = 3;
0055 module_param_named(power_output, modparam_power_output, int, 0444);
0056 MODULE_PARM_DESC(power_output,
0057     "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
0058
0059 static int modparam_roamtrigger = -70;
0060 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
0061 MODULE_PARM_DESC(roamtrigger,
0062     "set roaming dBm trigger: -80=optimize for distance, "
0063                 "-60=bandwidth (default: -70)");
0064
0065 static int modparam_roamdelta = 1;
0066 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
0067 MODULE_PARM_DESC(roamdelta,
0068     "set roaming tendency: 0=aggressive, 1=moderate, "
0069                 "2=conservative (default: moderate)");
0070
0071 static int modparam_workaround_interval;
0072 module_param_named(workaround_interval, modparam_workaround_interval,
0073                             int, 0444);
0074 MODULE_PARM_DESC(workaround_interval,
0075     "set stall workaround interval in msecs (0=disabled) (default: 0)");
0076
0077 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
0078 #define WL_NOISE    -96 /* typical noise level in dBm */
0079 #define WL_SIGMAX   -32 /* typical maximum signal level in dBm */
0080
0081
0082 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
0083  * based on wireless rndis) has default txpower of 13dBm.
0084  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
0085  *  100% : 20 mW ~ 13dBm
0086  *   75% : 15 mW ~ 12dBm
0087  *   50% : 10 mW ~ 10dBm
0088  *   25% :  5 mW ~  7dBm
0089  */
0090 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
0091 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
0092 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
0093 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
0094
0095 /* Known device types */
0096 #define RNDIS_UNKNOWN   0
0097 #define RNDIS_BCM4320A  1
0098 #define RNDIS_BCM4320B  2
0099
0100
0101 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
0102  * slightly modified for datatype endianess, etc
0103  */
0104 #define NDIS_802_11_LENGTH_SSID 32
0105 #define NDIS_802_11_LENGTH_RATES 8
0106 #define NDIS_802_11_LENGTH_RATES_EX 16
0107
0108 enum ndis_80211_net_type {
0109     NDIS_80211_TYPE_FREQ_HOP,
0110     NDIS_80211_TYPE_DIRECT_SEQ,
0111     NDIS_80211_TYPE_OFDM_A,
0112     NDIS_80211_TYPE_OFDM_G
0113 };
0114
0115 enum ndis_80211_net_infra {
0116     NDIS_80211_INFRA_ADHOC,
0117     NDIS_80211_INFRA_INFRA,
0118     NDIS_80211_INFRA_AUTO_UNKNOWN
0119 };
0120
0121 enum ndis_80211_auth_mode {
0122     NDIS_80211_AUTH_OPEN,
0123     NDIS_80211_AUTH_SHARED,
0124     NDIS_80211_AUTH_AUTO_SWITCH,
0125     NDIS_80211_AUTH_WPA,
0126     NDIS_80211_AUTH_WPA_PSK,
0127     NDIS_80211_AUTH_WPA_NONE,
0128     NDIS_80211_AUTH_WPA2,
0129     NDIS_80211_AUTH_WPA2_PSK
0130 };
0131
0132 enum ndis_80211_encr_status {
0133     NDIS_80211_ENCR_WEP_ENABLED,
0134     NDIS_80211_ENCR_DISABLED,
0135     NDIS_80211_ENCR_WEP_KEY_ABSENT,
0136     NDIS_80211_ENCR_NOT_SUPPORTED,
0137     NDIS_80211_ENCR_TKIP_ENABLED,
0138     NDIS_80211_ENCR_TKIP_KEY_ABSENT,
0139     NDIS_80211_ENCR_CCMP_ENABLED,
0140     NDIS_80211_ENCR_CCMP_KEY_ABSENT
0141 };
0142
0143 enum ndis_80211_priv_filter {
0144     NDIS_80211_PRIV_ACCEPT_ALL,
0145     NDIS_80211_PRIV_8021X_WEP
0146 };
0147
0148 enum ndis_80211_status_type {
0149     NDIS_80211_STATUSTYPE_AUTHENTICATION,
0150     NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
0151     NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
0152     NDIS_80211_STATUSTYPE_RADIOSTATE,
0153 };
0154
0155 enum ndis_80211_media_stream_mode {
0156     NDIS_80211_MEDIA_STREAM_OFF,
0157     NDIS_80211_MEDIA_STREAM_ON
0158 };
0159
0160 enum ndis_80211_radio_status {
0161     NDIS_80211_RADIO_STATUS_ON,
0162     NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
0163     NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
0164 };
0165
0166 enum ndis_80211_addkey_bits {
0167     NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
0168     NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
0169     NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
0170     NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
0171 };
0172
0173 enum ndis_80211_addwep_bits {
0174     NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
0175     NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
0176 };
0177
0178 enum ndis_80211_power_mode {
0179     NDIS_80211_POWER_MODE_CAM,
0180     NDIS_80211_POWER_MODE_MAX_PSP,
0181     NDIS_80211_POWER_MODE_FAST_PSP,
0182 };
0183
0184 enum ndis_80211_pmkid_cand_list_flag_bits {
0185     NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
0186 };
0187
0188 struct ndis_80211_auth_request {
0189     __le32 length;
0190     u8 bssid[ETH_ALEN];
0191     u8 padding[2];
0192     __le32 flags;
0193 } __packed;
0194
0195 struct ndis_80211_pmkid_candidate {
0196     u8 bssid[ETH_ALEN];
0197     u8 padding[2];
0198     __le32 flags;
0199 } __packed;
0200
0201 struct ndis_80211_pmkid_cand_list {
0202     __le32 version;
0203     __le32 num_candidates;
0204     struct ndis_80211_pmkid_candidate candidate_list[];
0205 } __packed;
0206
0207 struct ndis_80211_status_indication {
0208     __le32 status_type;
0209     union {
0210         __le32                  media_stream_mode;
0211         __le32                  radio_status;
0212         struct ndis_80211_auth_request      auth_request[0];
0213         struct ndis_80211_pmkid_cand_list   cand_list;
0214     } u;
0215 } __packed;
0216
0217 struct ndis_80211_ssid {
0218     __le32 length;
0219     u8 essid[NDIS_802_11_LENGTH_SSID];
0220 } __packed;
0221
0222 struct ndis_80211_conf_freq_hop {
0223     __le32 length;
0224     __le32 hop_pattern;
0225     __le32 hop_set;
0226     __le32 dwell_time;
0227 } __packed;
0228
0229 struct ndis_80211_conf {
0230     __le32 length;
0231     __le32 beacon_period;
0232     __le32 atim_window;
0233     __le32 ds_config;
0234     struct ndis_80211_conf_freq_hop fh_config;
0235 } __packed;
0236
0237 struct ndis_80211_bssid_ex {
0238     __le32 length;
0239     u8 mac[ETH_ALEN];
0240     u8 padding[2];
0241     struct ndis_80211_ssid ssid;
0242     __le32 privacy;
0243     __le32 rssi;
0244     __le32 net_type;
0245     struct ndis_80211_conf config;
0246     __le32 net_infra;
0247     u8 rates[NDIS_802_11_LENGTH_RATES_EX];
0248     __le32 ie_length;
0249     u8 ies[];
0250 } __packed;
0251
0252 struct ndis_80211_bssid_list_ex {
0253     __le32 num_items;
0254     struct ndis_80211_bssid_ex bssid[];
0255 } __packed;
0256
0257 struct ndis_80211_fixed_ies {
0258     u8 timestamp[8];
0259     __le16 beacon_interval;
0260     __le16 capabilities;
0261 } __packed;
0262
0263 struct ndis_80211_wep_key {
0264     __le32 size;
0265     __le32 index;
0266     __le32 length;
0267     u8 material[32];
0268 } __packed;
0269
0270 struct ndis_80211_key {
0271     __le32 size;
0272     __le32 index;
0273     __le32 length;
0274     u8 bssid[ETH_ALEN];
0275     u8 padding[6];
0276     u8 rsc[8];
0277     u8 material[32];
0278 } __packed;
0279
0280 struct ndis_80211_remove_key {
0281     __le32 size;
0282     __le32 index;
0283     u8 bssid[ETH_ALEN];
0284     u8 padding[2];
0285 } __packed;
0286
0287 struct ndis_config_param {
0288     __le32 name_offs;
0289     __le32 name_length;
0290     __le32 type;
0291     __le32 value_offs;
0292     __le32 value_length;
0293 } __packed;
0294
0295 struct ndis_80211_assoc_info {
0296     __le32 length;
0297     __le16 req_ies;
0298     struct req_ie {
0299         __le16 capa;
0300         __le16 listen_interval;
0301         u8 cur_ap_address[ETH_ALEN];
0302     } req_ie;
0303     __le32 req_ie_length;
0304     __le32 offset_req_ies;
0305     __le16 resp_ies;
0306     struct resp_ie {
0307         __le16 capa;
0308         __le16 status_code;
0309         __le16 assoc_id;
0310     } resp_ie;
0311     __le32 resp_ie_length;
0312     __le32 offset_resp_ies;
0313 } __packed;
0314
0315 struct ndis_80211_capability {
0316     __le32 length;
0317     __le32 version;
0318     __le32 num_pmkids;
0319     __le32 num_auth_encr_pair;
0320 } __packed;
0321
0322 struct ndis_80211_bssid_info {
0323     u8 bssid[ETH_ALEN];
0324     u8 pmkid[16];
0325 } __packed;
0326
0327 struct ndis_80211_pmkid {
0328     __le32 length;
0329     __le32 bssid_info_count;
0330     struct ndis_80211_bssid_info bssid_info[];
0331 } __packed;
0332
0333 /*
0334  *  private data
0335  */
0336 #define CAP_MODE_80211A     1
0337 #define CAP_MODE_80211B     2
0338 #define CAP_MODE_80211G     4
0339 #define CAP_MODE_MASK       7
0340
0341 #define WORK_LINK_UP        0
0342 #define WORK_LINK_DOWN      1
0343 #define WORK_SET_MULTICAST_LIST 2
0344
0345 #define RNDIS_WLAN_ALG_NONE 0
0346 #define RNDIS_WLAN_ALG_WEP  (1<<0)
0347 #define RNDIS_WLAN_ALG_TKIP (1<<1)
0348 #define RNDIS_WLAN_ALG_CCMP (1<<2)
0349
0350 #define RNDIS_WLAN_NUM_KEYS     4
0351 #define RNDIS_WLAN_KEY_MGMT_NONE    0
0352 #define RNDIS_WLAN_KEY_MGMT_802_1X  (1<<0)
0353 #define RNDIS_WLAN_KEY_MGMT_PSK     (1<<1)
0354
0355 #define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
0356
0357 static const struct ieee80211_channel rndis_channels[] = {
0358     { .center_freq = 2412 },
0359     { .center_freq = 2417 },
0360     { .center_freq = 2422 },
0361     { .center_freq = 2427 },
0362     { .center_freq = 2432 },
0363     { .center_freq = 2437 },
0364     { .center_freq = 2442 },
0365     { .center_freq = 2447 },
0366     { .center_freq = 2452 },
0367     { .center_freq = 2457 },
0368     { .center_freq = 2462 },
0369     { .center_freq = 2467 },
0370     { .center_freq = 2472 },
0371     { .center_freq = 2484 },
0372 };
0373
0374 static const struct ieee80211_rate rndis_rates[] = {
0375     { .bitrate = 10 },
0376     { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
0377     { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
0378     { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
0379     { .bitrate = 60 },
0380     { .bitrate = 90 },
0381     { .bitrate = 120 },
0382     { .bitrate = 180 },
0383     { .bitrate = 240 },
0384     { .bitrate = 360 },
0385     { .bitrate = 480 },
0386     { .bitrate = 540 }
0387 };
0388
0389 static const u32 rndis_cipher_suites[] = {
0390     WLAN_CIPHER_SUITE_WEP40,
0391     WLAN_CIPHER_SUITE_WEP104,
0392     WLAN_CIPHER_SUITE_TKIP,
0393     WLAN_CIPHER_SUITE_CCMP,
0394 };
0395
0396 struct rndis_wlan_encr_key {
0397     int len;
0398     u32 cipher;
0399     u8 material[32];
0400     u8 bssid[ETH_ALEN];
0401     bool pairwise;
0402     bool tx_key;
0403 };
0404
0405 /* RNDIS device private data */
0406 struct rndis_wlan_private {
0407     struct usbnet *usbdev;
0408
0409     struct wireless_dev wdev;
0410
0411     struct cfg80211_scan_request *scan_request;
0412
0413     struct workqueue_struct *workqueue;
0414     struct delayed_work dev_poller_work;
0415     struct delayed_work scan_work;
0416     struct work_struct work;
0417     struct mutex command_lock;
0418     unsigned long work_pending;
0419     int last_qual;
0420     s32 cqm_rssi_thold;
0421     u32 cqm_rssi_hyst;
0422     int last_cqm_event_rssi;
0423
0424     struct ieee80211_supported_band band;
0425     struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
0426     struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
0427     u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
0428
0429     int device_type;
0430     int caps;
0431     int multicast_size;
0432
0433     /* module parameters */
0434     char param_country[4];
0435     int  param_frameburst;
0436     int  param_afterburner;
0437     int  param_power_save;
0438     int  param_power_output;
0439     int  param_roamtrigger;
0440     int  param_roamdelta;
0441     u32  param_workaround_interval;
0442
0443     /* hardware state */
0444     bool radio_on;
0445     int power_mode;
0446     int infra_mode;
0447     bool connected;
0448     u8 bssid[ETH_ALEN];
0449     u32 current_command_oid;
0450
0451     /* encryption stuff */
0452     u8 encr_tx_key_index;
0453     struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
0454     int  wpa_version;
0455
0456     u8 command_buffer[COMMAND_BUFFER_SIZE];
0457 };
0458
0459 /*
0460  * cfg80211 ops
0461  */
0462 static int rndis_change_virtual_intf(struct wiphy *wiphy,
0463                     struct net_device *dev,
0464                     enum nl80211_iftype type,
0465                     struct vif_params *params);
0466
0467 static int rndis_scan(struct wiphy *wiphy,
0468             struct cfg80211_scan_request *request);
0469
0470 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
0471
0472 static int rndis_set_tx_power(struct wiphy *wiphy,
0473                   struct wireless_dev *wdev,
0474                   enum nl80211_tx_power_setting type,
0475                   int mbm);
0476 static int rndis_get_tx_power(struct wiphy *wiphy,
0477                   struct wireless_dev *wdev,
0478                   int *dbm);
0479
0480 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
0481                 struct cfg80211_connect_params *sme);
0482
0483 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
0484                 u16 reason_code);
0485
0486 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
0487                     struct cfg80211_ibss_params *params);
0488
0489 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
0490
0491 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
0492              u8 key_index, bool pairwise, const u8 *mac_addr,
0493              struct key_params *params);
0494
0495 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
0496              u8 key_index, bool pairwise, const u8 *mac_addr);
0497
0498 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
0499                  u8 key_index, bool unicast, bool multicast);
0500
0501 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
0502                  const u8 *mac, struct station_info *sinfo);
0503
0504 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
0505                    int idx, u8 *mac, struct station_info *sinfo);
0506
0507 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
0508                 struct cfg80211_pmksa *pmksa);
0509
0510 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
0511                 struct cfg80211_pmksa *pmksa);
0512
0513 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
0514
0515 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
0516                 bool enabled, int timeout);
0517
0518 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
0519                     struct net_device *dev,
0520                     s32 rssi_thold, u32 rssi_hyst);
0521
0522 static const struct cfg80211_ops rndis_config_ops = {
0523     .change_virtual_intf = rndis_change_virtual_intf,
0524     .scan = rndis_scan,
0525     .set_wiphy_params = rndis_set_wiphy_params,
0526     .set_tx_power = rndis_set_tx_power,
0527     .get_tx_power = rndis_get_tx_power,
0528     .connect = rndis_connect,
0529     .disconnect = rndis_disconnect,
0530     .join_ibss = rndis_join_ibss,
0531     .leave_ibss = rndis_leave_ibss,
0532     .add_key = rndis_add_key,
0533     .del_key = rndis_del_key,
0534     .set_default_key = rndis_set_default_key,
0535     .get_station = rndis_get_station,
0536     .dump_station = rndis_dump_station,
0537     .set_pmksa = rndis_set_pmksa,
0538     .del_pmksa = rndis_del_pmksa,
0539     .flush_pmksa = rndis_flush_pmksa,
0540     .set_power_mgmt = rndis_set_power_mgmt,
0541     .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
0542 };
0543
0544 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
0545
0546
0547 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
0548 {
0549     return (struct rndis_wlan_private *)dev->driver_priv;
0550 }
0551
0552 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
0553 {
0554     switch (priv->param_power_output) {
0555     default:
0556     case 3:
0557         return BCM4320_DEFAULT_TXPOWER_DBM_100;
0558     case 2:
0559         return BCM4320_DEFAULT_TXPOWER_DBM_75;
0560     case 1:
0561         return BCM4320_DEFAULT_TXPOWER_DBM_50;
0562     case 0:
0563         return BCM4320_DEFAULT_TXPOWER_DBM_25;
0564     }
0565 }
0566
0567 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
0568 {
0569     int cipher = priv->encr_keys[idx].cipher;
0570
0571     return (cipher == WLAN_CIPHER_SUITE_CCMP ||
0572         cipher == WLAN_CIPHER_SUITE_TKIP);
0573 }
0574
0575 static int rndis_cipher_to_alg(u32 cipher)
0576 {
0577     switch (cipher) {
0578     default:
0579         return RNDIS_WLAN_ALG_NONE;
0580     case WLAN_CIPHER_SUITE_WEP40:
0581     case WLAN_CIPHER_SUITE_WEP104:
0582         return RNDIS_WLAN_ALG_WEP;
0583     case WLAN_CIPHER_SUITE_TKIP:
0584         return RNDIS_WLAN_ALG_TKIP;
0585     case WLAN_CIPHER_SUITE_CCMP:
0586         return RNDIS_WLAN_ALG_CCMP;
0587     }
0588 }
0589
0590 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
0591 {
0592     switch (akm_suite) {
0593     default:
0594         return RNDIS_WLAN_KEY_MGMT_NONE;
0595     case WLAN_AKM_SUITE_8021X:
0596         return RNDIS_WLAN_KEY_MGMT_802_1X;
0597     case WLAN_AKM_SUITE_PSK:
0598         return RNDIS_WLAN_KEY_MGMT_PSK;
0599     }
0600 }
0601
0602 #ifdef DEBUG
0603 static const char *oid_to_string(u32 oid)
0604 {
0605     switch (oid) {
0606 #define OID_STR(oid) case oid: return(#oid)
0607         /* from rndis_host.h */
0608         OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
0609         OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
0610         OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
0611         OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
0612
0613         /* from rndis_wlan.c */
0614         OID_STR(RNDIS_OID_GEN_LINK_SPEED);
0615         OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
0616
0617         OID_STR(RNDIS_OID_GEN_XMIT_OK);
0618         OID_STR(RNDIS_OID_GEN_RCV_OK);
0619         OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
0620         OID_STR(RNDIS_OID_GEN_RCV_ERROR);
0621         OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
0622
0623         OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
0624         OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
0625         OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
0626
0627         OID_STR(RNDIS_OID_802_11_BSSID);
0628         OID_STR(RNDIS_OID_802_11_SSID);
0629         OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
0630         OID_STR(RNDIS_OID_802_11_ADD_WEP);
0631         OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
0632         OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
0633         OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
0634         OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
0635         OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
0636         OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
0637         OID_STR(RNDIS_OID_802_11_ADD_KEY);
0638         OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
0639         OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
0640         OID_STR(RNDIS_OID_802_11_CAPABILITY);
0641         OID_STR(RNDIS_OID_802_11_PMKID);
0642         OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
0643         OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
0644         OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
0645         OID_STR(RNDIS_OID_802_11_RSSI);
0646         OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
0647         OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
0648         OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
0649         OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
0650         OID_STR(RNDIS_OID_802_11_CONFIGURATION);
0651         OID_STR(RNDIS_OID_802_11_POWER_MODE);
0652         OID_STR(RNDIS_OID_802_11_BSSID_LIST);
0653 #undef OID_STR
0654     }
0655
0656     return "?";
0657 }
0658 #else
0659 static const char *oid_to_string(u32 oid)
0660 {
0661     return "?";
0662 }
0663 #endif
0664
0665 /* translate error code */
0666 static int rndis_error_status(__le32 rndis_status)
0667 {
0668     int ret = -EINVAL;
0669     switch (le32_to_cpu(rndis_status)) {
0670     case RNDIS_STATUS_SUCCESS:
0671         ret = 0;
0672         break;
0673     case RNDIS_STATUS_FAILURE:
0674     case RNDIS_STATUS_INVALID_DATA:
0675         ret = -EINVAL;
0676         break;
0677     case RNDIS_STATUS_NOT_SUPPORTED:
0678         ret = -EOPNOTSUPP;
0679         break;
0680     case RNDIS_STATUS_ADAPTER_NOT_READY:
0681     case RNDIS_STATUS_ADAPTER_NOT_OPEN:
0682         ret = -EBUSY;
0683         break;
0684     }
0685     return ret;
0686 }
0687
0688 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
0689 {
0690     struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
0691     union {
0692         void            *buf;
0693         struct rndis_msg_hdr    *header;
0694         struct rndis_query  *get;
0695         struct rndis_query_c    *get_c;
0696     } u;
0697     int ret, buflen;
0698     int resplen, respoffs, copylen;
0699
0700     buflen = *len + sizeof(*u.get);
0701     if (buflen < CONTROL_BUFFER_SIZE)
0702         buflen = CONTROL_BUFFER_SIZE;
0703
0704     if (buflen > COMMAND_BUFFER_SIZE) {
0705         u.buf = kmalloc(buflen, GFP_KERNEL);
0706         if (!u.buf)
0707             return -ENOMEM;
0708     } else {
0709         u.buf = priv->command_buffer;
0710     }
0711
0712     mutex_lock(&priv->command_lock);
0713
0714     memset(u.get, 0, sizeof *u.get);
0715     u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
0716     u.get->msg_len = cpu_to_le32(sizeof *u.get);
0717     u.get->oid = cpu_to_le32(oid);
0718
0719     priv->current_command_oid = oid;
0720     ret = rndis_command(dev, u.header, buflen);
0721     priv->current_command_oid = 0;
0722     if (ret < 0)
0723         netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
0724                __func__, oid_to_string(oid), ret,
0725                le32_to_cpu(u.get_c->status));
0726
0727     if (ret == 0) {
0728         resplen = le32_to_cpu(u.get_c->len);
0729         respoffs = le32_to_cpu(u.get_c->offset) + 8;
0730
0731         if (respoffs > buflen) {
0732             /* Device returned data offset outside buffer, error. */
0733             netdev_dbg(dev->net, "%s(%s): received invalid "
0734                 "data offset: %d > %d\n", __func__,
0735                 oid_to_string(oid), respoffs, buflen);
0736
0737             ret = -EINVAL;
0738             goto exit_unlock;
0739         }
0740
0741         if ((resplen + respoffs) > buflen) {
0742             /* Device would have returned more data if buffer would
0743              * have been big enough. Copy just the bits that we got.
0744              */
0745             copylen = buflen - respoffs;
0746         } else {
0747             copylen = resplen;
0748         }
0749
0750         if (copylen > *len)
0751             copylen = *len;
0752
0753         memcpy(data, u.buf + respoffs, copylen);
0754
0755         *len = resplen;
0756
0757         ret = rndis_error_status(u.get_c->status);
0758         if (ret < 0)
0759             netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
0760                    __func__, oid_to_string(oid),
0761                    le32_to_cpu(u.get_c->status), ret);
0762     }
0763
0764 exit_unlock:
0765     mutex_unlock(&priv->command_lock);
0766
0767     if (u.buf != priv->command_buffer)
0768         kfree(u.buf);
0769     return ret;
0770 }
0771
0772 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
0773              int len)
0774 {
0775     struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
0776     union {
0777         void            *buf;
0778         struct rndis_msg_hdr    *header;
0779         struct rndis_set    *set;
0780         struct rndis_set_c  *set_c;
0781     } u;
0782     int ret, buflen;
0783
0784     buflen = len + sizeof(*u.set);
0785     if (buflen < CONTROL_BUFFER_SIZE)
0786         buflen = CONTROL_BUFFER_SIZE;
0787
0788     if (buflen > COMMAND_BUFFER_SIZE) {
0789         u.buf = kmalloc(buflen, GFP_KERNEL);
0790         if (!u.buf)
0791             return -ENOMEM;
0792     } else {
0793         u.buf = priv->command_buffer;
0794     }
0795
0796     mutex_lock(&priv->command_lock);
0797
0798     memset(u.set, 0, sizeof *u.set);
0799     u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
0800     u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
0801     u.set->oid = cpu_to_le32(oid);
0802     u.set->len = cpu_to_le32(len);
0803     u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
0804     u.set->handle = cpu_to_le32(0);
0805     memcpy(u.buf + sizeof(*u.set), data, len);
0806
0807     priv->current_command_oid = oid;
0808     ret = rndis_command(dev, u.header, buflen);
0809     priv->current_command_oid = 0;
0810     if (ret < 0)
0811         netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
0812                __func__, oid_to_string(oid), ret,
0813                le32_to_cpu(u.set_c->status));
0814
0815     if (ret == 0) {
0816         ret = rndis_error_status(u.set_c->status);
0817
0818         if (ret < 0)
0819             netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
0820                    __func__, oid_to_string(oid),
0821                    le32_to_cpu(u.set_c->status), ret);
0822     }
0823
0824     mutex_unlock(&priv->command_lock);
0825
0826     if (u.buf != priv->command_buffer)
0827         kfree(u.buf);
0828     return ret;
0829 }
0830
0831 static int rndis_reset(struct usbnet *usbdev)
0832 {
0833     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
0834     struct rndis_reset *reset;
0835     int ret;
0836
0837     mutex_lock(&priv->command_lock);
0838
0839     reset = (void *)priv->command_buffer;
0840     memset(reset, 0, sizeof(*reset));
0841     reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
0842     reset->msg_len = cpu_to_le32(sizeof(*reset));
0843     priv->current_command_oid = 0;
0844     ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
0845
0846     mutex_unlock(&priv->command_lock);
0847
0848     if (ret < 0)
0849         return ret;
0850     return 0;
0851 }
0852
0853 /*
0854  * Specs say that we can only set config parameters only soon after device
0855  * initialization.
0856  *   value_type: 0 = u32, 2 = unicode string
0857  */
0858 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
0859                         int value_type, void *value)
0860 {
0861     struct ndis_config_param *infobuf;
0862     int value_len, info_len, param_len, ret, i;
0863     __le16 *unibuf;
0864     __le32 *dst_value;
0865
0866     if (value_type == 0)
0867         value_len = sizeof(__le32);
0868     else if (value_type == 2)
0869         value_len = strlen(value) * sizeof(__le16);
0870     else
0871         return -EINVAL;
0872
0873     param_len = strlen(param) * sizeof(__le16);
0874     info_len = sizeof(*infobuf) + param_len + value_len;
0875
0876 #ifdef DEBUG
0877     info_len += 12;
0878 #endif
0879     infobuf = kmalloc(info_len, GFP_KERNEL);
0880     if (!infobuf)
0881         return -ENOMEM;
0882
0883 #ifdef DEBUG
0884     info_len -= 12;
0885     /* extra 12 bytes are for padding (debug output) */
0886     memset(infobuf, 0xCC, info_len + 12);
0887 #endif
0888
0889     if (value_type == 2)
0890         netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
0891                param, (u8 *)value);
0892     else
0893         netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
0894                param, *(u32 *)value);
0895
0896     infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
0897     infobuf->name_length = cpu_to_le32(param_len);
0898     infobuf->type = cpu_to_le32(value_type);
0899     infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
0900     infobuf->value_length = cpu_to_le32(value_len);
0901
0902     /* simple string to unicode string conversion */
0903     unibuf = (void *)infobuf + sizeof(*infobuf);
0904     for (i = 0; i < param_len / sizeof(__le16); i++)
0905         unibuf[i] = cpu_to_le16(param[i]);
0906
0907     if (value_type == 2) {
0908         unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
0909         for (i = 0; i < value_len / sizeof(__le16); i++)
0910             unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
0911     } else {
0912         dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
0913         *dst_value = cpu_to_le32(*(u32 *)value);
0914     }
0915
0916 #ifdef DEBUG
0917     netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
0918     for (i = 0; i < info_len; i += 12) {
0919         u32 *tmp = (u32 *)((u8 *)infobuf + i);
0920         netdev_dbg(dev->net, "%08X:%08X:%08X\n",
0921                cpu_to_be32(tmp[0]),
0922                cpu_to_be32(tmp[1]),
0923                cpu_to_be32(tmp[2]));
0924     }
0925 #endif
0926
0927     ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
0928                             infobuf, info_len);
0929     if (ret != 0)
0930         netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
0931                ret);
0932
0933     kfree(infobuf);
0934     return ret;
0935 }
0936
0937 static int rndis_set_config_parameter_str(struct usbnet *dev,
0938                         char *param, char *value)
0939 {
0940     return rndis_set_config_parameter(dev, param, 2, value);
0941 }
0942
0943 /*
0944  * data conversion functions
0945  */
0946 static int level_to_qual(int level)
0947 {
0948     int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
0949     return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
0950 }
0951
0952 /*
0953  * common functions
0954  */
0955 static int set_infra_mode(struct usbnet *usbdev, int mode);
0956 static void restore_keys(struct usbnet *usbdev);
0957 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
0958                     bool *matched);
0959
0960 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
0961 {
0962     __le32 tmp;
0963
0964     /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
0965     tmp = cpu_to_le32(1);
0966     return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
0967                             sizeof(tmp));
0968 }
0969
0970 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
0971 {
0972     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
0973     int ret;
0974
0975     ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
0976                 ssid, sizeof(*ssid));
0977     if (ret < 0) {
0978         netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
0979         return ret;
0980     }
0981     if (ret == 0) {
0982         priv->radio_on = true;
0983         netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
0984     }
0985
0986     return ret;
0987 }
0988
0989 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
0990 {
0991     int ret;
0992
0993     ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
0994                 bssid, ETH_ALEN);
0995     if (ret < 0) {
0996         netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
0997                 bssid, ret);
0998         return ret;
0999     }
1000
1001     return ret;
1002 }
1003
1004 static int clear_bssid(struct usbnet *usbdev)
1005 {
1006     static const u8 broadcast_mac[ETH_ALEN] = {
1007         0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1008     };
1009
1010     return set_bssid(usbdev, broadcast_mac);
1011 }
1012
1013 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1014 {
1015     int ret, len;
1016
1017     len = ETH_ALEN;
1018     ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1019                   bssid, &len);
1020
1021     if (ret != 0)
1022         eth_zero_addr(bssid);
1023
1024     return ret;
1025 }
1026
1027 static int get_association_info(struct usbnet *usbdev,
1028             struct ndis_80211_assoc_info *info, int len)
1029 {
1030     return rndis_query_oid(usbdev,
1031             RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1032             info, &len);
1033 }
1034
1035 static bool is_associated(struct usbnet *usbdev)
1036 {
1037     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1038     u8 bssid[ETH_ALEN];
1039
1040     if (!priv->radio_on)
1041         return false;
1042
1043     return (get_bssid(usbdev, bssid) == 0 && !is_zero_ether_addr(bssid));
1044 }
1045
1046 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1047 {
1048     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1049     struct ndis_80211_ssid ssid;
1050     int i, ret = 0;
1051
1052     if (priv->radio_on) {
1053         ret = rndis_set_oid(usbdev,
1054                 RNDIS_OID_802_11_DISASSOCIATE,
1055                 NULL, 0);
1056         if (ret == 0) {
1057             priv->radio_on = false;
1058             netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1059                    __func__);
1060
1061             if (reset_ssid)
1062                 msleep(100);
1063         }
1064     }
1065
1066     /* disassociate causes radio to be turned off; if reset_ssid
1067      * is given, set random ssid to enable radio */
1068     if (reset_ssid) {
1069         /* Set device to infrastructure mode so we don't get ad-hoc
1070          * 'media connect' indications with the random ssid.
1071          */
1072         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1073
1074         ssid.length = cpu_to_le32(sizeof(ssid.essid));
1075         get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1076         ssid.essid[0] = 0x1;
1077         ssid.essid[1] = 0xff;
1078         for (i = 2; i < sizeof(ssid.essid); i++)
1079             ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1080         ret = set_essid(usbdev, &ssid);
1081     }
1082     return ret;
1083 }
1084
1085 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1086                 enum nl80211_auth_type auth_type, int keymgmt)
1087 {
1088     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1089     __le32 tmp;
1090     int auth_mode, ret;
1091
1092     netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1093            __func__, wpa_version, auth_type, keymgmt);
1094
1095     if (wpa_version & NL80211_WPA_VERSION_2) {
1096         if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1097             auth_mode = NDIS_80211_AUTH_WPA2;
1098         else
1099             auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1100     } else if (wpa_version & NL80211_WPA_VERSION_1) {
1101         if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1102             auth_mode = NDIS_80211_AUTH_WPA;
1103         else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1104             auth_mode = NDIS_80211_AUTH_WPA_PSK;
1105         else
1106             auth_mode = NDIS_80211_AUTH_WPA_NONE;
1107     } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1108         auth_mode = NDIS_80211_AUTH_SHARED;
1109     else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1110         auth_mode = NDIS_80211_AUTH_OPEN;
1111     else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1112         auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1113     else
1114         return -ENOTSUPP;
1115
1116     tmp = cpu_to_le32(auth_mode);
1117     ret = rndis_set_oid(usbdev,
1118                 RNDIS_OID_802_11_AUTHENTICATION_MODE,
1119                 &tmp, sizeof(tmp));
1120     if (ret != 0) {
1121         netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1122                 ret);
1123         return ret;
1124     }
1125
1126     priv->wpa_version = wpa_version;
1127
1128     return 0;
1129 }
1130
1131 static int set_priv_filter(struct usbnet *usbdev)
1132 {
1133     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1134     __le32 tmp;
1135
1136     netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1137            __func__, priv->wpa_version);
1138
1139     if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1140         priv->wpa_version & NL80211_WPA_VERSION_1)
1141         tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1142     else
1143         tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1144
1145     return rndis_set_oid(usbdev,
1146                  RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1147                  sizeof(tmp));
1148 }
1149
1150 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1151 {
1152     __le32 tmp;
1153     int encr_mode, ret;
1154
1155     netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1156            __func__, pairwise, groupwise);
1157
1158     if (pairwise & RNDIS_WLAN_ALG_CCMP)
1159         encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1160     else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1161         encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1162     else if (pairwise & RNDIS_WLAN_ALG_WEP)
1163         encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1164     else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1165         encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1166     else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1167         encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1168     else
1169         encr_mode = NDIS_80211_ENCR_DISABLED;
1170
1171     tmp = cpu_to_le32(encr_mode);
1172     ret = rndis_set_oid(usbdev,
1173             RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1174             sizeof(tmp));
1175     if (ret != 0) {
1176         netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1177                 ret);
1178         return ret;
1179     }
1180
1181     return 0;
1182 }
1183
1184 static int set_infra_mode(struct usbnet *usbdev, int mode)
1185 {
1186     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1187     __le32 tmp;
1188     int ret;
1189
1190     netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1191            __func__, priv->infra_mode);
1192
1193     tmp = cpu_to_le32(mode);
1194     ret = rndis_set_oid(usbdev,
1195                 RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1196                 &tmp, sizeof(tmp));
1197     if (ret != 0) {
1198         netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1199                 ret);
1200         return ret;
1201     }
1202
1203     /* NDIS drivers clear keys when infrastructure mode is
1204      * changed. But Linux tools assume otherwise. So set the
1205      * keys */
1206     restore_keys(usbdev);
1207
1208     priv->infra_mode = mode;
1209     return 0;
1210 }
1211
1212 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1213 {
1214     __le32 tmp;
1215
1216     netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1217
1218     if (rts_threshold == -1 || rts_threshold > 2347)
1219         rts_threshold = 2347;
1220
1221     tmp = cpu_to_le32(rts_threshold);
1222     return rndis_set_oid(usbdev,
1223                  RNDIS_OID_802_11_RTS_THRESHOLD,
1224                  &tmp, sizeof(tmp));
1225 }
1226
1227 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1228 {
1229     __le32 tmp;
1230
1231     netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1232
1233     if (frag_threshold < 256 || frag_threshold > 2346)
1234         frag_threshold = 2346;
1235
1236     tmp = cpu_to_le32(frag_threshold);
1237     return rndis_set_oid(usbdev,
1238             RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1239             &tmp, sizeof(tmp));
1240 }
1241
1242 static void set_default_iw_params(struct usbnet *usbdev)
1243 {
1244     set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1245     set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1246                         RNDIS_WLAN_KEY_MGMT_NONE);
1247     set_priv_filter(usbdev);
1248     set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1249 }
1250
1251 static int deauthenticate(struct usbnet *usbdev)
1252 {
1253     int ret;
1254
1255     ret = disassociate(usbdev, true);
1256     set_default_iw_params(usbdev);
1257     return ret;
1258 }
1259
1260 static int set_channel(struct usbnet *usbdev, int channel)
1261 {
1262     struct ndis_80211_conf config;
1263     unsigned int dsconfig;
1264     int len, ret;
1265
1266     netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1267
1268     /* this OID is valid only when not associated */
1269     if (is_associated(usbdev))
1270         return 0;
1271
1272     dsconfig = 1000 *
1273         ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1274
1275     len = sizeof(config);
1276     ret = rndis_query_oid(usbdev,
1277             RNDIS_OID_802_11_CONFIGURATION,
1278             &config, &len);
1279     if (ret < 0) {
1280         netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1281                __func__);
1282         return ret;
1283     }
1284
1285     config.ds_config = cpu_to_le32(dsconfig);
1286     ret = rndis_set_oid(usbdev,
1287             RNDIS_OID_802_11_CONFIGURATION,
1288             &config, sizeof(config));
1289
1290     netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1291
1292     return ret;
1293 }
1294
1295 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1296                              u32 *beacon_period)
1297 {
1298     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1299     struct ieee80211_channel *channel;
1300     struct ndis_80211_conf config;
1301     int len, ret;
1302
1303     /* Get channel and beacon interval */
1304     len = sizeof(config);
1305     ret = rndis_query_oid(usbdev,
1306             RNDIS_OID_802_11_CONFIGURATION,
1307             &config, &len);
1308     netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1309                 __func__, ret);
1310     if (ret < 0)
1311         return NULL;
1312
1313     channel = ieee80211_get_channel(priv->wdev.wiphy,
1314                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1315     if (!channel)
1316         return NULL;
1317
1318     if (beacon_period)
1319         *beacon_period = le32_to_cpu(config.beacon_period);
1320     return channel;
1321 }
1322
1323 /* index must be 0 - N, as per NDIS  */
1324 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1325                                 u8 index)
1326 {
1327     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1328     struct ndis_80211_wep_key ndis_key;
1329     u32 cipher;
1330     int ret;
1331
1332     netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1333            __func__, index, key_len);
1334
1335     if (index >= RNDIS_WLAN_NUM_KEYS)
1336         return -EINVAL;
1337
1338     if (key_len == 5)
1339         cipher = WLAN_CIPHER_SUITE_WEP40;
1340     else if (key_len == 13)
1341         cipher = WLAN_CIPHER_SUITE_WEP104;
1342     else
1343         return -EINVAL;
1344
1345     memset(&ndis_key, 0, sizeof(ndis_key));
1346
1347     ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1348     ndis_key.length = cpu_to_le32(key_len);
1349     ndis_key.index = cpu_to_le32(index);
1350     memcpy(&ndis_key.material, key, key_len);
1351
1352     if (index == priv->encr_tx_key_index) {
1353         ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1354         ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1355                             RNDIS_WLAN_ALG_NONE);
1356         if (ret)
1357             netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1358                     ret);
1359     }
1360
1361     ret = rndis_set_oid(usbdev,
1362             RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1363             sizeof(ndis_key));
1364     if (ret != 0) {
1365         netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1366                 index + 1, ret);
1367         return ret;
1368     }
1369
1370     priv->encr_keys[index].len = key_len;
1371     priv->encr_keys[index].cipher = cipher;
1372     memcpy(&priv->encr_keys[index].material, key, key_len);
1373     eth_broadcast_addr(priv->encr_keys[index].bssid);
1374
1375     return 0;
1376 }
1377
1378 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1379             u8 index, const u8 *addr, const u8 *rx_seq,
1380             int seq_len, u32 cipher, __le32 flags)
1381 {
1382     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1383     struct ndis_80211_key ndis_key;
1384     bool is_addr_ok;
1385     int ret;
1386
1387     if (index >= RNDIS_WLAN_NUM_KEYS) {
1388         netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1389                __func__, index);
1390         return -EINVAL;
1391     }
1392     if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1393         netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1394                __func__, key_len);
1395         return -EINVAL;
1396     }
1397     if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1398         if (!rx_seq || seq_len <= 0) {
1399             netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1400                    __func__);
1401             return -EINVAL;
1402         }
1403         if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1404             netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1405             return -EINVAL;
1406         }
1407     }
1408
1409     is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1410                     !is_broadcast_ether_addr(addr);
1411     if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1412         netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1413                __func__, addr);
1414         return -EINVAL;
1415     }
1416
1417     netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1418            __func__, index,
1419            !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1420            !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1421            !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1422
1423     memset(&ndis_key, 0, sizeof(ndis_key));
1424
1425     ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1426                 sizeof(ndis_key.material) + key_len);
1427     ndis_key.length = cpu_to_le32(key_len);
1428     ndis_key.index = cpu_to_le32(index) | flags;
1429
1430     if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1431         /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1432          * different order than NDIS spec, so swap the order here. */
1433         memcpy(ndis_key.material, key, 16);
1434         memcpy(ndis_key.material + 16, key + 24, 8);
1435         memcpy(ndis_key.material + 24, key + 16, 8);
1436     } else
1437         memcpy(ndis_key.material, key, key_len);
1438
1439     if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1440         memcpy(ndis_key.rsc, rx_seq, seq_len);
1441
1442     if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1443         /* pairwise key */
1444         memcpy(ndis_key.bssid, addr, ETH_ALEN);
1445     } else {
1446         /* group key */
1447         if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1448             eth_broadcast_addr(ndis_key.bssid);
1449         else
1450             get_bssid(usbdev, ndis_key.bssid);
1451     }
1452
1453     ret = rndis_set_oid(usbdev,
1454             RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1455             le32_to_cpu(ndis_key.size));
1456     netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1457            __func__, ret);
1458     if (ret != 0)
1459         return ret;
1460
1461     memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1462     priv->encr_keys[index].len = key_len;
1463     priv->encr_keys[index].cipher = cipher;
1464     memcpy(&priv->encr_keys[index].material, key, key_len);
1465     if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1466         memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1467     else
1468         eth_broadcast_addr(priv->encr_keys[index].bssid);
1469
1470     if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1471         priv->encr_tx_key_index = index;
1472
1473     return 0;
1474 }
1475
1476 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1477 {
1478     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1479     struct rndis_wlan_encr_key key;
1480
1481     if (is_wpa_key(priv, key_idx))
1482         return 0;
1483
1484     key = priv->encr_keys[key_idx];
1485
1486     netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1487
1488     if (key.len == 0)
1489         return 0;
1490
1491     return add_wep_key(usbdev, key.material, key.len, key_idx);
1492 }
1493
1494 static void restore_keys(struct usbnet *usbdev)
1495 {
1496     int i;
1497
1498     for (i = 0; i < 4; i++)
1499         restore_key(usbdev, i);
1500 }
1501
1502 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1503 {
1504     memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1505 }
1506
1507 /* remove_key is for both wep and wpa */
1508 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1509 {
1510     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1511     struct ndis_80211_remove_key remove_key;
1512     __le32 keyindex;
1513     bool is_wpa;
1514     int ret;
1515
1516     if (index >= RNDIS_WLAN_NUM_KEYS)
1517         return -ENOENT;
1518
1519     if (priv->encr_keys[index].len == 0)
1520         return 0;
1521
1522     is_wpa = is_wpa_key(priv, index);
1523
1524     netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1525            __func__, index, is_wpa ? "wpa" : "wep",
1526            priv->encr_keys[index].len);
1527
1528     clear_key(priv, index);
1529
1530     if (is_wpa) {
1531         remove_key.size = cpu_to_le32(sizeof(remove_key));
1532         remove_key.index = cpu_to_le32(index);
1533         if (bssid) {
1534             /* pairwise key */
1535             if (!is_broadcast_ether_addr(bssid))
1536                 remove_key.index |=
1537                     NDIS_80211_ADDKEY_PAIRWISE_KEY;
1538             memcpy(remove_key.bssid, bssid,
1539                     sizeof(remove_key.bssid));
1540         } else
1541             memset(remove_key.bssid, 0xff,
1542                         sizeof(remove_key.bssid));
1543
1544         ret = rndis_set_oid(usbdev,
1545                 RNDIS_OID_802_11_REMOVE_KEY,
1546                 &remove_key, sizeof(remove_key));
1547         if (ret != 0)
1548             return ret;
1549     } else {
1550         keyindex = cpu_to_le32(index);
1551         ret = rndis_set_oid(usbdev,
1552                 RNDIS_OID_802_11_REMOVE_WEP,
1553                 &keyindex, sizeof(keyindex));
1554         if (ret != 0) {
1555             netdev_warn(usbdev->net,
1556                     "removing encryption key %d failed (%08X)\n",
1557                     index, ret);
1558             return ret;
1559         }
1560     }
1561
1562     /* if it is transmit key, disable encryption */
1563     if (index == priv->encr_tx_key_index)
1564         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1565
1566     return 0;
1567 }
1568
1569 static void set_multicast_list(struct usbnet *usbdev)
1570 {
1571     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1572     struct netdev_hw_addr *ha;
1573     __le32 filter, basefilter;
1574     int ret;
1575     char *mc_addrs = NULL;
1576     int mc_count;
1577
1578     basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1579                       RNDIS_PACKET_TYPE_BROADCAST);
1580
1581     if (usbdev->net->flags & IFF_PROMISC) {
1582         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1583                       RNDIS_PACKET_TYPE_ALL_LOCAL);
1584     } else if (usbdev->net->flags & IFF_ALLMULTI) {
1585         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1586     }
1587
1588     if (filter != basefilter)
1589         goto set_filter;
1590
1591     /*
1592      * mc_list should be accessed holding the lock, so copy addresses to
1593      * local buffer first.
1594      */
1595     netif_addr_lock_bh(usbdev->net);
1596     mc_count = netdev_mc_count(usbdev->net);
1597     if (mc_count > priv->multicast_size) {
1598         filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1599     } else if (mc_count) {
1600         int i = 0;
1601
1602         mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1603         if (!mc_addrs) {
1604             netif_addr_unlock_bh(usbdev->net);
1605             return;
1606         }
1607
1608         netdev_for_each_mc_addr(ha, usbdev->net)
1609             memcpy(mc_addrs + i++ * ETH_ALEN,
1610                    ha->addr, ETH_ALEN);
1611     }
1612     netif_addr_unlock_bh(usbdev->net);
1613
1614     if (filter != basefilter)
1615         goto set_filter;
1616
1617     if (mc_count) {
1618         ret = rndis_set_oid(usbdev,
1619                 RNDIS_OID_802_3_MULTICAST_LIST,
1620                 mc_addrs, mc_count * ETH_ALEN);
1621         kfree(mc_addrs);
1622         if (ret == 0)
1623             filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1624         else
1625             filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1626
1627         netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1628                mc_count, priv->multicast_size, ret);
1629     }
1630
1631 set_filter:
1632     ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1633                             sizeof(filter));
1634     if (ret < 0) {
1635         netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1636                 le32_to_cpu(filter));
1637     }
1638
1639     netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1640            le32_to_cpu(filter), ret);
1641 }
1642
1643 #ifdef DEBUG
1644 static void debug_print_pmkids(struct usbnet *usbdev,
1645                 struct ndis_80211_pmkid *pmkids,
1646                 const char *func_str)
1647 {
1648     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1649     int i, len, count, max_pmkids, entry_len;
1650
1651     max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1652     len = le32_to_cpu(pmkids->length);
1653     count = le32_to_cpu(pmkids->bssid_info_count);
1654
1655     entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1656
1657     netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1658                 "%d)\n", func_str, count, len, entry_len);
1659
1660     if (count > max_pmkids)
1661         count = max_pmkids;
1662
1663     for (i = 0; i < count; i++) {
1664         u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1665
1666         netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1667                 "pmkid: %08X:%08X:%08X:%08X\n",
1668                 func_str, pmkids->bssid_info[i].bssid,
1669                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1670                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1671     }
1672 }
1673 #else
1674 static void debug_print_pmkids(struct usbnet *usbdev,
1675                 struct ndis_80211_pmkid *pmkids,
1676                 const char *func_str)
1677 {
1678     return;
1679 }
1680 #endif
1681
1682 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1683 {
1684     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1685     struct ndis_80211_pmkid *pmkids;
1686     int len, ret, max_pmkids;
1687
1688     max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1689     len = struct_size(pmkids, bssid_info, max_pmkids);
1690
1691     pmkids = kzalloc(len, GFP_KERNEL);
1692     if (!pmkids)
1693         return ERR_PTR(-ENOMEM);
1694
1695     pmkids->length = cpu_to_le32(len);
1696     pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1697
1698     ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1699             pmkids, &len);
1700     if (ret < 0) {
1701         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1702                 " -> %d\n", __func__, len, max_pmkids, ret);
1703
1704         kfree(pmkids);
1705         return ERR_PTR(ret);
1706     }
1707
1708     if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1709         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1710
1711     debug_print_pmkids(usbdev, pmkids, __func__);
1712
1713     return pmkids;
1714 }
1715
1716 static int set_device_pmkids(struct usbnet *usbdev,
1717                 struct ndis_80211_pmkid *pmkids)
1718 {
1719     int ret, len, num_pmkids;
1720
1721     num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1722     len = struct_size(pmkids, bssid_info, num_pmkids);
1723     pmkids->length = cpu_to_le32(len);
1724
1725     debug_print_pmkids(usbdev, pmkids, __func__);
1726
1727     ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1728                 le32_to_cpu(pmkids->length));
1729     if (ret < 0) {
1730         netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1731                 "\n", __func__, len, num_pmkids, ret);
1732     }
1733
1734     kfree(pmkids);
1735     return ret;
1736 }
1737
1738 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1739                         struct ndis_80211_pmkid *pmkids,
1740                         struct cfg80211_pmksa *pmksa,
1741                         int max_pmkids)
1742 {
1743     int i, err;
1744     unsigned int count;
1745
1746     count = le32_to_cpu(pmkids->bssid_info_count);
1747
1748     if (count > max_pmkids)
1749         count = max_pmkids;
1750
1751     for (i = 0; i < count; i++)
1752         if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1753                      pmksa->bssid))
1754             break;
1755
1756     /* pmkid not found */
1757     if (i == count) {
1758         netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1759                     __func__, pmksa->bssid);
1760         err = -ENOENT;
1761         goto error;
1762     }
1763
1764     for (; i + 1 < count; i++)
1765         pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1766
1767     count--;
1768     pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1769     pmkids->bssid_info_count = cpu_to_le32(count);
1770
1771     return pmkids;
1772 error:
1773     kfree(pmkids);
1774     return ERR_PTR(err);
1775 }
1776
1777 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1778                         struct ndis_80211_pmkid *pmkids,
1779                         struct cfg80211_pmksa *pmksa,
1780                         int max_pmkids)
1781 {
1782     struct ndis_80211_pmkid *new_pmkids;
1783     int i, err, newlen;
1784     unsigned int count;
1785
1786     count = le32_to_cpu(pmkids->bssid_info_count);
1787
1788     if (count > max_pmkids)
1789         count = max_pmkids;
1790
1791     /* update with new pmkid */
1792     for (i = 0; i < count; i++) {
1793         if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1794                       pmksa->bssid))
1795             continue;
1796
1797         memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1798                                 WLAN_PMKID_LEN);
1799
1800         return pmkids;
1801     }
1802
1803     /* out of space, return error */
1804     if (i == max_pmkids) {
1805         netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1806         err = -ENOSPC;
1807         goto error;
1808     }
1809
1810     /* add new pmkid */
1811     newlen = struct_size(pmkids, bssid_info, count + 1);
1812
1813     new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1814     if (!new_pmkids) {
1815         err = -ENOMEM;
1816         goto error;
1817     }
1818     pmkids = new_pmkids;
1819
1820     pmkids->length = cpu_to_le32(newlen);
1821     pmkids->bssid_info_count = cpu_to_le32(count + 1);
1822
1823     memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1824     memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1825
1826     return pmkids;
1827 error:
1828     kfree(pmkids);
1829     return ERR_PTR(err);
1830 }
1831
1832 /*
1833  * cfg80211 ops
1834  */
1835 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1836                     struct net_device *dev,
1837                     enum nl80211_iftype type,
1838                     struct vif_params *params)
1839 {
1840     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1841     struct usbnet *usbdev = priv->usbdev;
1842     int mode;
1843
1844     switch (type) {
1845     case NL80211_IFTYPE_ADHOC:
1846         mode = NDIS_80211_INFRA_ADHOC;
1847         break;
1848     case NL80211_IFTYPE_STATION:
1849         mode = NDIS_80211_INFRA_INFRA;
1850         break;
1851     default:
1852         return -EINVAL;
1853     }
1854
1855     priv->wdev.iftype = type;
1856
1857     return set_infra_mode(usbdev, mode);
1858 }
1859
1860 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1861 {
1862     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1863     struct usbnet *usbdev = priv->usbdev;
1864     int err;
1865
1866     if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1867         err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1868         if (err < 0)
1869             return err;
1870     }
1871
1872     if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1873         err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1874         if (err < 0)
1875             return err;
1876     }
1877
1878     return 0;
1879 }
1880
1881 static int rndis_set_tx_power(struct wiphy *wiphy,
1882                   struct wireless_dev *wdev,
1883                   enum nl80211_tx_power_setting type,
1884                   int mbm)
1885 {
1886     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1887     struct usbnet *usbdev = priv->usbdev;
1888
1889     netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1890            __func__, type, mbm);
1891
1892     if (mbm < 0 || (mbm % 100))
1893         return -ENOTSUPP;
1894
1895     /* Device doesn't support changing txpower after initialization, only
1896      * turn off/on radio. Support 'auto' mode and setting same dBm that is
1897      * currently used.
1898      */
1899     if (type == NL80211_TX_POWER_AUTOMATIC ||
1900         MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1901         if (!priv->radio_on)
1902             disassociate(usbdev, true); /* turn on radio */
1903
1904         return 0;
1905     }
1906
1907     return -ENOTSUPP;
1908 }
1909
1910 static int rndis_get_tx_power(struct wiphy *wiphy,
1911                   struct wireless_dev *wdev,
1912                   int *dbm)
1913 {
1914     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1915     struct usbnet *usbdev = priv->usbdev;
1916
1917     *dbm = get_bcm4320_power_dbm(priv);
1918
1919     netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1920
1921     return 0;
1922 }
1923
1924 #define SCAN_DELAY_JIFFIES (6 * HZ)
1925 static int rndis_scan(struct wiphy *wiphy,
1926             struct cfg80211_scan_request *request)
1927 {
1928     struct net_device *dev = request->wdev->netdev;
1929     struct usbnet *usbdev = netdev_priv(dev);
1930     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1931     int ret;
1932     int delay = SCAN_DELAY_JIFFIES;
1933
1934     netdev_dbg(usbdev->net, "cfg80211.scan\n");
1935
1936     /* Get current bssid list from device before new scan, as new scan
1937      * clears internal bssid list.
1938      */
1939     rndis_check_bssid_list(usbdev, NULL, NULL);
1940
1941     if (priv->scan_request && priv->scan_request != request)
1942         return -EBUSY;
1943
1944     priv->scan_request = request;
1945
1946     ret = rndis_start_bssid_list_scan(usbdev);
1947     if (ret == 0) {
1948         if (priv->device_type == RNDIS_BCM4320A)
1949             delay = HZ;
1950
1951         /* Wait before retrieving scan results from device */
1952         queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1953     }
1954
1955     return ret;
1956 }
1957
1958 static bool rndis_bss_info_update(struct usbnet *usbdev,
1959                   struct ndis_80211_bssid_ex *bssid)
1960 {
1961     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1962     struct ieee80211_channel *channel;
1963     struct cfg80211_bss *bss;
1964     s32 signal;
1965     u64 timestamp;
1966     u16 capability;
1967     u16 beacon_interval;
1968     struct ndis_80211_fixed_ies *fixed;
1969     int ie_len, bssid_len;
1970     u8 *ie;
1971
1972     netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1973            bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1974
1975     /* parse bssid structure */
1976     bssid_len = le32_to_cpu(bssid->length);
1977
1978     if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1979             sizeof(struct ndis_80211_fixed_ies))
1980         return NULL;
1981
1982     fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1983
1984     ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1985     ie_len = min(bssid_len - (int)sizeof(*bssid),
1986                     (int)le32_to_cpu(bssid->ie_length));
1987     ie_len -= sizeof(struct ndis_80211_fixed_ies);
1988     if (ie_len < 0)
1989         return NULL;
1990
1991     /* extract data for cfg80211_inform_bss */
1992     channel = ieee80211_get_channel(priv->wdev.wiphy,
1993             KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1994     if (!channel)
1995         return NULL;
1996
1997     signal = level_to_qual(le32_to_cpu(bssid->rssi));
1998     timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1999     capability = le16_to_cpu(fixed->capabilities);
2000     beacon_interval = le16_to_cpu(fixed->beacon_interval);
2001
2002     bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2003                   CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2004                   timestamp, capability, beacon_interval,
2005                   ie, ie_len, signal, GFP_KERNEL);
2006     cfg80211_put_bss(priv->wdev.wiphy, bss);
2007
2008     return (bss != NULL);
2009 }
2010
2011 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2012                     struct ndis_80211_bssid_ex *bssid,
2013                     int *bssid_len, void *buf, int len)
2014 {
2015     void *buf_end, *bssid_end;
2016
2017     buf_end = (char *)buf + len;
2018     bssid_end = (char *)bssid + *bssid_len;
2019
2020     if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2021         *bssid_len = 0;
2022         return NULL;
2023     } else {
2024         bssid = (void *)((char *)bssid + *bssid_len);
2025         *bssid_len = le32_to_cpu(bssid->length);
2026         return bssid;
2027     }
2028 }
2029
2030 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2031                   int bssid_len, void *buf, int len)
2032 {
2033     void *buf_end, *bssid_end;
2034
2035     if (!bssid || bssid_len <= 0 || bssid_len > len)
2036         return false;
2037
2038     buf_end = (char *)buf + len;
2039     bssid_end = (char *)bssid + bssid_len;
2040
2041     return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2042 }
2043
2044 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2045                     bool *matched)
2046 {
2047     void *buf = NULL;
2048     struct ndis_80211_bssid_list_ex *bssid_list;
2049     struct ndis_80211_bssid_ex *bssid;
2050     int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2051
2052     netdev_dbg(usbdev->net, "%s()\n", __func__);
2053
2054     len = CONTROL_BUFFER_SIZE;
2055 resize_buf:
2056     buf = kzalloc(len, GFP_KERNEL);
2057     if (!buf) {
2058         ret = -ENOMEM;
2059         goto out;
2060     }
2061
2062     /* BSSID-list might have got bigger last time we checked, keep
2063      * resizing until it won't get any bigger.
2064      */
2065     new_len = len;
2066     ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2067                   buf, &new_len);
2068     if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2069         goto out;
2070
2071     if (new_len > len) {
2072         len = new_len;
2073         kfree(buf);
2074         goto resize_buf;
2075     }
2076
2077     len = new_len;
2078
2079     bssid_list = buf;
2080     count = le32_to_cpu(bssid_list->num_items);
2081     real_count = 0;
2082     netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2083
2084     bssid_len = 0;
2085     bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2086
2087     /* Device returns incorrect 'num_items'. Workaround by ignoring the
2088      * received 'num_items' and walking through full bssid buffer instead.
2089      */
2090     while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2091         if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2092             matched) {
2093             if (ether_addr_equal(bssid->mac, match_bssid))
2094                 *matched = true;
2095         }
2096
2097         real_count++;
2098         bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2099     }
2100
2101     netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2102                 " %d\n", __func__, count, real_count);
2103
2104 out:
2105     kfree(buf);
2106     return ret;
2107 }
2108
2109 static void rndis_get_scan_results(struct work_struct *work)
2110 {
2111     struct rndis_wlan_private *priv =
2112         container_of(work, struct rndis_wlan_private, scan_work.work);
2113     struct usbnet *usbdev = priv->usbdev;
2114     struct cfg80211_scan_info info = {};
2115     int ret;
2116
2117     netdev_dbg(usbdev->net, "get_scan_results\n");
2118
2119     if (!priv->scan_request)
2120         return;
2121
2122     ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2123
2124     info.aborted = ret < 0;
2125     cfg80211_scan_done(priv->scan_request, &info);
2126
2127     priv->scan_request = NULL;
2128 }
2129
2130 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2131                     struct cfg80211_connect_params *sme)
2132 {
2133     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2134     struct usbnet *usbdev = priv->usbdev;
2135     struct ieee80211_channel *channel = sme->channel;
2136     struct ndis_80211_ssid ssid;
2137     int pairwise = RNDIS_WLAN_ALG_NONE;
2138     int groupwise = RNDIS_WLAN_ALG_NONE;
2139     int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2140     int length, i, ret, chan = -1;
2141
2142     if (channel)
2143         chan = ieee80211_frequency_to_channel(channel->center_freq);
2144
2145     groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2146     for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2147         pairwise |=
2148             rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2149
2150     if (sme->crypto.n_ciphers_pairwise > 0 &&
2151             pairwise == RNDIS_WLAN_ALG_NONE) {
2152         netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2153         return -ENOTSUPP;
2154     }
2155
2156     for (i = 0; i < sme->crypto.n_akm_suites; i++)
2157         keymgmt |=
2158             rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2159
2160     if (sme->crypto.n_akm_suites > 0 &&
2161             keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2162         netdev_err(usbdev->net, "Invalid keymgmt\n");
2163         return -ENOTSUPP;
2164     }
2165
2166     netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2167            sme->ssid, sme->bssid, chan,
2168            sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2169            groupwise, pairwise, keymgmt);
2170
2171     if (is_associated(usbdev))
2172         disassociate(usbdev, false);
2173
2174     ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2175     if (ret < 0) {
2176         netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2177                ret);
2178         goto err_turn_radio_on;
2179     }
2180
2181     ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2182                                 keymgmt);
2183     if (ret < 0) {
2184         netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2185                ret);
2186         goto err_turn_radio_on;
2187     }
2188
2189     set_priv_filter(usbdev);
2190
2191     ret = set_encr_mode(usbdev, pairwise, groupwise);
2192     if (ret < 0) {
2193         netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2194                ret);
2195         goto err_turn_radio_on;
2196     }
2197
2198     if (channel) {
2199         ret = set_channel(usbdev, chan);
2200         if (ret < 0) {
2201             netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2202                    ret);
2203             goto err_turn_radio_on;
2204         }
2205     }
2206
2207     if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2208         priv->encr_tx_key_index = sme->key_idx;
2209         ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2210         if (ret < 0) {
2211             netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2212                    ret, sme->key_len, sme->key_idx);
2213             goto err_turn_radio_on;
2214         }
2215     }
2216
2217     if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2218                 !is_broadcast_ether_addr(sme->bssid)) {
2219         ret = set_bssid(usbdev, sme->bssid);
2220         if (ret < 0) {
2221             netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2222                    ret);
2223             goto err_turn_radio_on;
2224         }
2225     } else
2226         clear_bssid(usbdev);
2227
2228     length = sme->ssid_len;
2229     if (length > NDIS_802_11_LENGTH_SSID)
2230         length = NDIS_802_11_LENGTH_SSID;
2231
2232     memset(&ssid, 0, sizeof(ssid));
2233     ssid.length = cpu_to_le32(length);
2234     memcpy(ssid.essid, sme->ssid, length);
2235
2236     /* Pause and purge rx queue, so we don't pass packets before
2237      * 'media connect'-indication.
2238      */
2239     usbnet_pause_rx(usbdev);
2240     usbnet_purge_paused_rxq(usbdev);
2241
2242     ret = set_essid(usbdev, &ssid);
2243     if (ret < 0)
2244         netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2245     return ret;
2246
2247 err_turn_radio_on:
2248     disassociate(usbdev, true);
2249
2250     return ret;
2251 }
2252
2253 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2254                                 u16 reason_code)
2255 {
2256     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2257     struct usbnet *usbdev = priv->usbdev;
2258
2259     netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2260
2261     priv->connected = false;
2262     eth_zero_addr(priv->bssid);
2263
2264     return deauthenticate(usbdev);
2265 }
2266
2267 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2268                     struct cfg80211_ibss_params *params)
2269 {
2270     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2271     struct usbnet *usbdev = priv->usbdev;
2272     struct ieee80211_channel *channel = params->chandef.chan;
2273     struct ndis_80211_ssid ssid;
2274     enum nl80211_auth_type auth_type;
2275     int ret, alg, length, chan = -1;
2276
2277     if (channel)
2278         chan = ieee80211_frequency_to_channel(channel->center_freq);
2279
2280     /* TODO: How to handle ad-hoc encryption?
2281      * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2282      * pre-shared for encryption (open/shared/wpa), is key set before
2283      * join_ibss? Which auth_type to use (not in params)? What about WPA?
2284      */
2285     if (params->privacy) {
2286         auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2287         alg = RNDIS_WLAN_ALG_WEP;
2288     } else {
2289         auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2290         alg = RNDIS_WLAN_ALG_NONE;
2291     }
2292
2293     netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2294            params->ssid, params->bssid, chan, params->privacy);
2295
2296     if (is_associated(usbdev))
2297         disassociate(usbdev, false);
2298
2299     ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2300     if (ret < 0) {
2301         netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2302                ret);
2303         goto err_turn_radio_on;
2304     }
2305
2306     ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2307     if (ret < 0) {
2308         netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2309                ret);
2310         goto err_turn_radio_on;
2311     }
2312
2313     set_priv_filter(usbdev);
2314
2315     ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2316     if (ret < 0) {
2317         netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2318                ret);
2319         goto err_turn_radio_on;
2320     }
2321
2322     if (channel) {
2323         ret = set_channel(usbdev, chan);
2324         if (ret < 0) {
2325             netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2326                    ret);
2327             goto err_turn_radio_on;
2328         }
2329     }
2330
2331     if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2332                 !is_broadcast_ether_addr(params->bssid)) {
2333         ret = set_bssid(usbdev, params->bssid);
2334         if (ret < 0) {
2335             netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2336                    ret);
2337             goto err_turn_radio_on;
2338         }
2339     } else
2340         clear_bssid(usbdev);
2341
2342     length = params->ssid_len;
2343     if (length > NDIS_802_11_LENGTH_SSID)
2344         length = NDIS_802_11_LENGTH_SSID;
2345
2346     memset(&ssid, 0, sizeof(ssid));
2347     ssid.length = cpu_to_le32(length);
2348     memcpy(ssid.essid, params->ssid, length);
2349
2350     /* Don't need to pause rx queue for ad-hoc. */
2351     usbnet_purge_paused_rxq(usbdev);
2352     usbnet_resume_rx(usbdev);
2353
2354     ret = set_essid(usbdev, &ssid);
2355     if (ret < 0)
2356         netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2357                ret);
2358     return ret;
2359
2360 err_turn_radio_on:
2361     disassociate(usbdev, true);
2362
2363     return ret;
2364 }
2365
2366 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2367 {
2368     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2369     struct usbnet *usbdev = priv->usbdev;
2370
2371     netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2372
2373     priv->connected = false;
2374     eth_zero_addr(priv->bssid);
2375
2376     return deauthenticate(usbdev);
2377 }
2378
2379 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2380              u8 key_index, bool pairwise, const u8 *mac_addr,
2381              struct key_params *params)
2382 {
2383     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2384     struct usbnet *usbdev = priv->usbdev;
2385     __le32 flags;
2386
2387     netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2388            __func__, key_index, mac_addr, params->cipher);
2389
2390     switch (params->cipher) {
2391     case WLAN_CIPHER_SUITE_WEP40:
2392     case WLAN_CIPHER_SUITE_WEP104:
2393         return add_wep_key(usbdev, params->key, params->key_len,
2394                                 key_index);
2395     case WLAN_CIPHER_SUITE_TKIP:
2396     case WLAN_CIPHER_SUITE_CCMP:
2397         flags = 0;
2398
2399         if (params->seq && params->seq_len > 0)
2400             flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2401         if (mac_addr)
2402             flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2403                     NDIS_80211_ADDKEY_TRANSMIT_KEY;
2404
2405         return add_wpa_key(usbdev, params->key, params->key_len,
2406                 key_index, mac_addr, params->seq,
2407                 params->seq_len, params->cipher, flags);
2408     default:
2409         netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2410                __func__, params->cipher);
2411         return -ENOTSUPP;
2412     }
2413 }
2414
2415 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2416              u8 key_index, bool pairwise, const u8 *mac_addr)
2417 {
2418     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2419     struct usbnet *usbdev = priv->usbdev;
2420
2421     netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2422
2423     return remove_key(usbdev, key_index, mac_addr);
2424 }
2425
2426 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2427                  u8 key_index, bool unicast, bool multicast)
2428 {
2429     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2430     struct usbnet *usbdev = priv->usbdev;
2431     struct rndis_wlan_encr_key key;
2432
2433     netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2434
2435     if (key_index >= RNDIS_WLAN_NUM_KEYS)
2436         return -ENOENT;
2437
2438     priv->encr_tx_key_index = key_index;
2439
2440     if (is_wpa_key(priv, key_index))
2441         return 0;
2442
2443     key = priv->encr_keys[key_index];
2444
2445     return add_wep_key(usbdev, key.material, key.len, key_index);
2446 }
2447
2448 static void rndis_fill_station_info(struct usbnet *usbdev,
2449                         struct station_info *sinfo)
2450 {
2451     __le32 linkspeed, rssi;
2452     int ret, len;
2453
2454     memset(sinfo, 0, sizeof(*sinfo));
2455
2456     len = sizeof(linkspeed);
2457     ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2458     if (ret == 0) {
2459         sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2460         sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2461     }
2462
2463     len = sizeof(rssi);
2464     ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2465                   &rssi, &len);
2466     if (ret == 0) {
2467         sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2468         sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2469     }
2470 }
2471
2472 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2473                  const u8 *mac, struct station_info *sinfo)
2474 {
2475     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2476     struct usbnet *usbdev = priv->usbdev;
2477
2478     if (!ether_addr_equal(priv->bssid, mac))
2479         return -ENOENT;
2480
2481     rndis_fill_station_info(usbdev, sinfo);
2482
2483     return 0;
2484 }
2485
2486 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2487                    int idx, u8 *mac, struct station_info *sinfo)
2488 {
2489     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2490     struct usbnet *usbdev = priv->usbdev;
2491
2492     if (idx != 0)
2493         return -ENOENT;
2494
2495     memcpy(mac, priv->bssid, ETH_ALEN);
2496
2497     rndis_fill_station_info(usbdev, sinfo);
2498
2499     return 0;
2500 }
2501
2502 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2503                 struct cfg80211_pmksa *pmksa)
2504 {
2505     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2506     struct usbnet *usbdev = priv->usbdev;
2507     struct ndis_80211_pmkid *pmkids;
2508     u32 *tmp = (u32 *)pmksa->pmkid;
2509
2510     netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2511             pmksa->bssid,
2512             cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2513             cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2514
2515     pmkids = get_device_pmkids(usbdev);
2516     if (IS_ERR(pmkids)) {
2517         /* couldn't read PMKID cache from device */
2518         return PTR_ERR(pmkids);
2519     }
2520
2521     pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2522     if (IS_ERR(pmkids)) {
2523         /* not found, list full, etc */
2524         return PTR_ERR(pmkids);
2525     }
2526
2527     return set_device_pmkids(usbdev, pmkids);
2528 }
2529
2530 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2531                 struct cfg80211_pmksa *pmksa)
2532 {
2533     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2534     struct usbnet *usbdev = priv->usbdev;
2535     struct ndis_80211_pmkid *pmkids;
2536     u32 *tmp = (u32 *)pmksa->pmkid;
2537
2538     netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2539             pmksa->bssid,
2540             cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2541             cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2542
2543     pmkids = get_device_pmkids(usbdev);
2544     if (IS_ERR(pmkids)) {
2545         /* Couldn't read PMKID cache from device */
2546         return PTR_ERR(pmkids);
2547     }
2548
2549     pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2550     if (IS_ERR(pmkids)) {
2551         /* not found, etc */
2552         return PTR_ERR(pmkids);
2553     }
2554
2555     return set_device_pmkids(usbdev, pmkids);
2556 }
2557
2558 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2559 {
2560     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2561     struct usbnet *usbdev = priv->usbdev;
2562     struct ndis_80211_pmkid pmkid;
2563
2564     netdev_dbg(usbdev->net, "%s()\n", __func__);
2565
2566     memset(&pmkid, 0, sizeof(pmkid));
2567
2568     pmkid.length = cpu_to_le32(sizeof(pmkid));
2569     pmkid.bssid_info_count = cpu_to_le32(0);
2570
2571     return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2572                  &pmkid, sizeof(pmkid));
2573 }
2574
2575 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2576                 bool enabled, int timeout)
2577 {
2578     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2579     struct usbnet *usbdev = priv->usbdev;
2580     int power_mode;
2581     __le32 mode;
2582     int ret;
2583
2584     if (priv->device_type != RNDIS_BCM4320B)
2585         return -ENOTSUPP;
2586
2587     netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2588                 enabled ? "enabled" : "disabled",
2589                 timeout);
2590
2591     if (enabled)
2592         power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2593     else
2594         power_mode = NDIS_80211_POWER_MODE_CAM;
2595
2596     if (power_mode == priv->power_mode)
2597         return 0;
2598
2599     priv->power_mode = power_mode;
2600
2601     mode = cpu_to_le32(power_mode);
2602     ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2603                 &mode, sizeof(mode));
2604
2605     netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2606                 __func__, ret);
2607
2608     return ret;
2609 }
2610
2611 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2612                     struct net_device *dev,
2613                     s32 rssi_thold, u32 rssi_hyst)
2614 {
2615     struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2616
2617     priv->cqm_rssi_thold = rssi_thold;
2618     priv->cqm_rssi_hyst = rssi_hyst;
2619     priv->last_cqm_event_rssi = 0;
2620
2621     return 0;
2622 }
2623
2624 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2625                        struct ndis_80211_assoc_info *info)
2626 {
2627     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2628     struct ieee80211_channel *channel;
2629     struct ndis_80211_ssid ssid;
2630     struct cfg80211_bss *bss;
2631     s32 signal;
2632     u64 timestamp;
2633     u16 capability;
2634     u32 beacon_period = 0;
2635     __le32 rssi;
2636     u8 ie_buf[34];
2637     int len, ret, ie_len;
2638
2639     /* Get signal quality, in case of error use rssi=0 and ignore error. */
2640     len = sizeof(rssi);
2641     rssi = 0;
2642     ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2643                   &rssi, &len);
2644     signal = level_to_qual(le32_to_cpu(rssi));
2645
2646     netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2647            "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2648            level_to_qual(le32_to_cpu(rssi)));
2649
2650     /* Get AP capabilities */
2651     if (info) {
2652         capability = le16_to_cpu(info->resp_ie.capa);
2653     } else {
2654         /* Set atleast ESS/IBSS capability */
2655         capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2656                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2657     }
2658
2659     /* Get channel and beacon interval */
2660     channel = get_current_channel(usbdev, &beacon_period);
2661     if (!channel) {
2662         netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2663                     __func__);
2664         return;
2665     }
2666
2667     /* Get SSID, in case of error, use zero length SSID and ignore error. */
2668     len = sizeof(ssid);
2669     memset(&ssid, 0, sizeof(ssid));
2670     ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2671                   &ssid, &len);
2672     netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2673                 "'%.32s'\n", __func__, ret,
2674                 le32_to_cpu(ssid.length), ssid.essid);
2675
2676     if (le32_to_cpu(ssid.length) > 32)
2677         ssid.length = cpu_to_le32(32);
2678
2679     ie_buf[0] = WLAN_EID_SSID;
2680     ie_buf[1] = le32_to_cpu(ssid.length);
2681     memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2682
2683     ie_len = le32_to_cpu(ssid.length) + 2;
2684
2685     /* no tsf */
2686     timestamp = 0;
2687
2688     netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2689         "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2690         "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2691         bssid, (u32)timestamp, capability, beacon_period, ie_len,
2692         ssid.essid, signal);
2693
2694     bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2695                   CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2696                   timestamp, capability, beacon_period,
2697                   ie_buf, ie_len, signal, GFP_KERNEL);
2698     cfg80211_put_bss(priv->wdev.wiphy, bss);
2699 }
2700
2701 /*
2702  * workers, indication handlers, device poller
2703  */
2704 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2705 {
2706     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2707     struct ndis_80211_assoc_info *info = NULL;
2708     u8 bssid[ETH_ALEN];
2709     unsigned int resp_ie_len, req_ie_len;
2710     unsigned int offset;
2711     u8 *req_ie, *resp_ie;
2712     int ret;
2713     bool roamed = false;
2714     bool match_bss;
2715
2716     if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2717         /* received media connect indication while connected, either
2718          * device reassociated with same AP or roamed to new. */
2719         roamed = true;
2720     }
2721
2722     req_ie_len = 0;
2723     resp_ie_len = 0;
2724     req_ie = NULL;
2725     resp_ie = NULL;
2726
2727     if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2728         info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2729         if (!info) {
2730             /* No memory? Try resume work later */
2731             set_bit(WORK_LINK_UP, &priv->work_pending);
2732             queue_work(priv->workqueue, &priv->work);
2733             return;
2734         }
2735
2736         /* Get association info IEs from device. */
2737         ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2738         if (!ret) {
2739             req_ie_len = le32_to_cpu(info->req_ie_length);
2740             if (req_ie_len > CONTROL_BUFFER_SIZE)
2741                 req_ie_len = CONTROL_BUFFER_SIZE;
2742             if (req_ie_len != 0) {
2743                 offset = le32_to_cpu(info->offset_req_ies);
2744
2745                 if (offset > CONTROL_BUFFER_SIZE)
2746                     offset = CONTROL_BUFFER_SIZE;
2747
2748                 req_ie = (u8 *)info + offset;
2749
2750                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2751                     req_ie_len =
2752                         CONTROL_BUFFER_SIZE - offset;
2753             }
2754
2755             resp_ie_len = le32_to_cpu(info->resp_ie_length);
2756             if (resp_ie_len > CONTROL_BUFFER_SIZE)
2757                 resp_ie_len = CONTROL_BUFFER_SIZE;
2758             if (resp_ie_len != 0) {
2759                 offset = le32_to_cpu(info->offset_resp_ies);
2760
2761                 if (offset > CONTROL_BUFFER_SIZE)
2762                     offset = CONTROL_BUFFER_SIZE;
2763
2764                 resp_ie = (u8 *)info + offset;
2765
2766                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2767                     resp_ie_len =
2768                         CONTROL_BUFFER_SIZE - offset;
2769             }
2770         } else {
2771             /* Since rndis_wlan_craft_connected_bss() might use info
2772              * later and expects info to contain valid data if
2773              * non-null, free info and set NULL here.
2774              */
2775             kfree(info);
2776             info = NULL;
2777         }
2778     } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2779         return;
2780
2781     ret = get_bssid(usbdev, bssid);
2782     if (ret < 0)
2783         memset(bssid, 0, sizeof(bssid));
2784
2785     netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2786            bssid, roamed ? " roamed" : "");
2787
2788     /* Internal bss list in device should contain at least the currently
2789      * connected bss and we can get it to cfg80211 with
2790      * rndis_check_bssid_list().
2791      *
2792      * NDIS spec says: "If the device is associated, but the associated
2793      *  BSSID is not in its BSSID scan list, then the driver must add an
2794      *  entry for the BSSID at the end of the data that it returns in
2795      *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2796      *
2797      * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2798      */
2799     match_bss = false;
2800     rndis_check_bssid_list(usbdev, bssid, &match_bss);
2801
2802     if (!is_zero_ether_addr(bssid) && !match_bss) {
2803         /* Couldn't get bss from device, we need to manually craft bss
2804          * for cfg80211.
2805          */
2806         rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2807     }
2808
2809     if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2810         if (!roamed) {
2811             cfg80211_connect_result(usbdev->net, bssid, req_ie,
2812                         req_ie_len, resp_ie,
2813                         resp_ie_len, 0, GFP_KERNEL);
2814         } else {
2815             struct cfg80211_roam_info roam_info = {
2816                 .links[0].channel =
2817                     get_current_channel(usbdev, NULL),
2818                 .links[0].bssid = bssid,
2819                 .req_ie = req_ie,
2820                 .req_ie_len = req_ie_len,
2821                 .resp_ie = resp_ie,
2822                 .resp_ie_len = resp_ie_len,
2823             };
2824
2825             cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2826         }
2827     } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2828         cfg80211_ibss_joined(usbdev->net, bssid,
2829                      get_current_channel(usbdev, NULL),
2830                      GFP_KERNEL);
2831
2832     kfree(info);
2833
2834     priv->connected = true;
2835     memcpy(priv->bssid, bssid, ETH_ALEN);
2836
2837     usbnet_resume_rx(usbdev);
2838     netif_carrier_on(usbdev->net);
2839 }
2840
2841 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2842 {
2843     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2844
2845     if (priv->connected) {
2846         priv->connected = false;
2847         eth_zero_addr(priv->bssid);
2848
2849         deauthenticate(usbdev);
2850
2851         cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2852     }
2853
2854     netif_carrier_off(usbdev->net);
2855 }
2856
2857 static void rndis_wlan_worker(struct work_struct *work)
2858 {
2859     struct rndis_wlan_private *priv =
2860         container_of(work, struct rndis_wlan_private, work);
2861     struct usbnet *usbdev = priv->usbdev;
2862
2863     if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2864         rndis_wlan_do_link_up_work(usbdev);
2865
2866     if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2867         rndis_wlan_do_link_down_work(usbdev);
2868
2869     if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2870         set_multicast_list(usbdev);
2871 }
2872
2873 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2874 {
2875     struct usbnet *usbdev = netdev_priv(dev);
2876     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2877
2878     if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2879         return;
2880
2881     set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2882     queue_work(priv->workqueue, &priv->work);
2883 }
2884
2885 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2886                 struct ndis_80211_status_indication *indication,
2887                 int len)
2888 {
2889     u8 *buf;
2890     const char *type;
2891     int flags, buflen, key_id;
2892     bool pairwise_error, group_error;
2893     struct ndis_80211_auth_request *auth_req;
2894     enum nl80211_key_type key_type;
2895
2896     /* must have at least one array entry */
2897     if (len < offsetof(struct ndis_80211_status_indication, u) +
2898                 sizeof(struct ndis_80211_auth_request)) {
2899         netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2900                 len);
2901         return;
2902     }
2903
2904     buf = (void *)&indication->u.auth_request[0];
2905     buflen = len - offsetof(struct ndis_80211_status_indication, u);
2906
2907     while (buflen >= sizeof(*auth_req)) {
2908         auth_req = (void *)buf;
2909         if (buflen < le32_to_cpu(auth_req->length))
2910             return;
2911         type = "unknown";
2912         flags = le32_to_cpu(auth_req->flags);
2913         pairwise_error = false;
2914         group_error = false;
2915
2916         if (flags & 0x1)
2917             type = "reauth request";
2918         if (flags & 0x2)
2919             type = "key update request";
2920         if (flags & 0x6) {
2921             pairwise_error = true;
2922             type = "pairwise_error";
2923         }
2924         if (flags & 0xe) {
2925             group_error = true;
2926             type = "group_error";
2927         }
2928
2929         netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2930                 type, le32_to_cpu(auth_req->flags));
2931
2932         if (pairwise_error) {
2933             key_type = NL80211_KEYTYPE_PAIRWISE;
2934             key_id = -1;
2935
2936             cfg80211_michael_mic_failure(usbdev->net,
2937                             auth_req->bssid,
2938                             key_type, key_id, NULL,
2939                             GFP_KERNEL);
2940         }
2941
2942         if (group_error) {
2943             key_type = NL80211_KEYTYPE_GROUP;
2944             key_id = -1;
2945
2946             cfg80211_michael_mic_failure(usbdev->net,
2947                             auth_req->bssid,
2948                             key_type, key_id, NULL,
2949                             GFP_KERNEL);
2950         }
2951
2952         buflen -= le32_to_cpu(auth_req->length);
2953         buf += le32_to_cpu(auth_req->length);
2954     }
2955 }
2956
2957 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2958                 struct ndis_80211_status_indication *indication,
2959                 int len)
2960 {
2961     struct ndis_80211_pmkid_cand_list *cand_list;
2962     int list_len, expected_len, i;
2963
2964     if (len < offsetof(struct ndis_80211_status_indication, u) +
2965                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2966         netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2967                 len);
2968         return;
2969     }
2970
2971     list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2972             sizeof(struct ndis_80211_pmkid_candidate);
2973     expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2974             offsetof(struct ndis_80211_status_indication, u);
2975
2976     if (len < expected_len) {
2977         netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2978                 len, expected_len);
2979         return;
2980     }
2981
2982     cand_list = &indication->u.cand_list;
2983
2984     netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2985             le32_to_cpu(cand_list->version),
2986             le32_to_cpu(cand_list->num_candidates));
2987
2988     if (le32_to_cpu(cand_list->version) != 1)
2989         return;
2990
2991     for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2992         struct ndis_80211_pmkid_candidate *cand =
2993                         &cand_list->candidate_list[i];
2994         bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
2995
2996         netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
2997                i, le32_to_cpu(cand->flags), preauth, cand->bssid);
2998
2999         cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3000                         preauth, GFP_ATOMIC);
3001     }
3002 }
3003
3004 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3005             struct rndis_indicate *msg, int buflen)
3006 {
3007     struct ndis_80211_status_indication *indication;
3008     unsigned int len, offset;
3009
3010     offset = offsetof(struct rndis_indicate, status) +
3011             le32_to_cpu(msg->offset);
3012     len = le32_to_cpu(msg->length);
3013
3014     if (len < 8) {
3015         netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3016                 len);
3017         return;
3018     }
3019
3020     if (len > buflen || offset > buflen || offset + len > buflen) {
3021         netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3022                 offset + len, buflen);
3023         return;
3024     }
3025
3026     indication = (void *)((u8 *)msg + offset);
3027
3028     switch (le32_to_cpu(indication->status_type)) {
3029     case NDIS_80211_STATUSTYPE_RADIOSTATE:
3030         netdev_info(usbdev->net, "radio state indication: %i\n",
3031                 le32_to_cpu(indication->u.radio_status));
3032         return;
3033
3034     case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3035         netdev_info(usbdev->net, "media stream mode indication: %i\n",
3036                 le32_to_cpu(indication->u.media_stream_mode));
3037         return;
3038
3039     case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3040         rndis_wlan_auth_indication(usbdev, indication, len);
3041         return;
3042
3043     case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3044         rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3045         return;
3046
3047     default:
3048         netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3049                 le32_to_cpu(indication->status_type));
3050     }
3051 }
3052
3053 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3054 {
3055     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3056     struct rndis_indicate *msg = ind;
3057
3058     switch (le32_to_cpu(msg->status)) {
3059     case RNDIS_STATUS_MEDIA_CONNECT:
3060         if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3061             /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3062              * "media connect" indications which confuses driver
3063              * and userspace to think that device is
3064              * roaming/reassociating when it isn't.
3065              */
3066             netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3067             return;
3068         }
3069
3070         usbnet_pause_rx(usbdev);
3071
3072         netdev_info(usbdev->net, "media connect\n");
3073
3074         /* queue work to avoid recursive calls into rndis_command */
3075         set_bit(WORK_LINK_UP, &priv->work_pending);
3076         queue_work(priv->workqueue, &priv->work);
3077         break;
3078
3079     case RNDIS_STATUS_MEDIA_DISCONNECT:
3080         netdev_info(usbdev->net, "media disconnect\n");
3081
3082         /* queue work to avoid recursive calls into rndis_command */
3083         set_bit(WORK_LINK_DOWN, &priv->work_pending);
3084         queue_work(priv->workqueue, &priv->work);
3085         break;
3086
3087     case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3088         rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3089         break;
3090
3091     default:
3092         netdev_info(usbdev->net, "indication: 0x%08x\n",
3093                 le32_to_cpu(msg->status));
3094         break;
3095     }
3096 }
3097
3098 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3099 {
3100     struct {
3101         __le32  num_items;
3102         __le32  items[8];
3103     } networks_supported;
3104     struct ndis_80211_capability caps;
3105     int len, retval, i, n;
3106     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3107
3108     /* determine supported modes */
3109     len = sizeof(networks_supported);
3110     retval = rndis_query_oid(usbdev,
3111                  RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3112                  &networks_supported, &len);
3113     if (!retval) {
3114         n = le32_to_cpu(networks_supported.num_items);
3115         if (n > 8)
3116             n = 8;
3117         for (i = 0; i < n; i++) {
3118             switch (le32_to_cpu(networks_supported.items[i])) {
3119             case NDIS_80211_TYPE_FREQ_HOP:
3120             case NDIS_80211_TYPE_DIRECT_SEQ:
3121                 priv->caps |= CAP_MODE_80211B;
3122                 break;
3123             case NDIS_80211_TYPE_OFDM_A:
3124                 priv->caps |= CAP_MODE_80211A;
3125                 break;
3126             case NDIS_80211_TYPE_OFDM_G:
3127                 priv->caps |= CAP_MODE_80211G;
3128                 break;
3129             }
3130         }
3131     }
3132
3133     /* get device 802.11 capabilities, number of PMKIDs */
3134     len = sizeof(caps);
3135     retval = rndis_query_oid(usbdev,
3136                  RNDIS_OID_802_11_CAPABILITY,
3137                  &caps, &len);
3138     if (!retval) {
3139         netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3140                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3141                 le32_to_cpu(caps.length),
3142                 le32_to_cpu(caps.version),
3143                 le32_to_cpu(caps.num_pmkids),
3144                 le32_to_cpu(caps.num_auth_encr_pair));
3145         wiphy->max_num_pmkids = le32_to_cpu(caps.num_pmkids);
3146     } else
3147         wiphy->max_num_pmkids = 0;
3148
3149     return retval;
3150 }
3151
3152 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3153 {
3154     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3155     enum nl80211_cqm_rssi_threshold_event event;
3156     int thold, hyst, last_event;
3157
3158     if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3159         return;
3160     if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3161         return;
3162
3163     last_event = priv->last_cqm_event_rssi;
3164     thold = priv->cqm_rssi_thold;
3165     hyst = priv->cqm_rssi_hyst;
3166
3167     if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3168         event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3169     else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3170         event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3171     else
3172         return;
3173
3174     priv->last_cqm_event_rssi = rssi;
3175     cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3176 }
3177
3178 #define DEVICE_POLLER_JIFFIES (HZ)
3179 static void rndis_device_poller(struct work_struct *work)
3180 {
3181     struct rndis_wlan_private *priv =
3182         container_of(work, struct rndis_wlan_private,
3183                             dev_poller_work.work);
3184     struct usbnet *usbdev = priv->usbdev;
3185     __le32 rssi, tmp;
3186     int len, ret, j;
3187     int update_jiffies = DEVICE_POLLER_JIFFIES;
3188     void *buf;
3189
3190     /* Only check/do workaround when connected. Calling is_associated()
3191      * also polls device with rndis_command() and catches for media link
3192      * indications.
3193      */
3194     if (!is_associated(usbdev)) {
3195         /* Workaround bad scanning in BCM4320a devices with active
3196          * background scanning when not associated.
3197          */
3198         if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3199             !priv->scan_request) {
3200             /* Get previous scan results */
3201             rndis_check_bssid_list(usbdev, NULL, NULL);
3202
3203             /* Initiate new scan */
3204             rndis_start_bssid_list_scan(usbdev);
3205         }
3206
3207         goto end;
3208     }
3209
3210     len = sizeof(rssi);
3211     ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3212                   &rssi, &len);
3213     if (ret == 0) {
3214         priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3215         rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3216     }
3217
3218     netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3219            ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3220
3221     /* Workaround transfer stalls on poor quality links.
3222      * TODO: find right way to fix these stalls (as stalls do not happen
3223      * with ndiswrapper/windows driver). */
3224     if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3225         /* Decrease stats worker interval to catch stalls.
3226          * faster. Faster than 400-500ms causes packet loss,
3227          * Slower doesn't catch stalls fast enough.
3228          */
3229         j = msecs_to_jiffies(priv->param_workaround_interval);
3230         if (j > DEVICE_POLLER_JIFFIES)
3231             j = DEVICE_POLLER_JIFFIES;
3232         else if (j <= 0)
3233             j = 1;
3234         update_jiffies = j;
3235
3236         /* Send scan OID. Use of both OIDs is required to get device
3237          * working.
3238          */
3239         tmp = cpu_to_le32(1);
3240         rndis_set_oid(usbdev,
3241                   RNDIS_OID_802_11_BSSID_LIST_SCAN,
3242                   &tmp, sizeof(tmp));
3243
3244         len = CONTROL_BUFFER_SIZE;
3245         buf = kmalloc(len, GFP_KERNEL);
3246         if (!buf)
3247             goto end;
3248
3249         rndis_query_oid(usbdev,
3250                 RNDIS_OID_802_11_BSSID_LIST,
3251                 buf, &len);
3252         kfree(buf);
3253     }
3254
3255 end:
3256     if (update_jiffies >= HZ)
3257         update_jiffies = round_jiffies_relative(update_jiffies);
3258     else {
3259         j = round_jiffies_relative(update_jiffies);
3260         if (abs(j - update_jiffies) <= 10)
3261             update_jiffies = j;
3262     }
3263
3264     queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3265                                 update_jiffies);
3266 }
3267
3268 /*
3269  * driver/device initialization
3270  */
3271 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3272 {
3273     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3274
3275     priv->device_type = device_type;
3276
3277     priv->param_country[0] = modparam_country[0];
3278     priv->param_country[1] = modparam_country[1];
3279     priv->param_country[2] = 0;
3280     priv->param_frameburst   = modparam_frameburst;
3281     priv->param_afterburner  = modparam_afterburner;
3282     priv->param_power_save   = modparam_power_save;
3283     priv->param_power_output = modparam_power_output;
3284     priv->param_roamtrigger  = modparam_roamtrigger;
3285     priv->param_roamdelta    = modparam_roamdelta;
3286
3287     priv->param_country[0] = toupper(priv->param_country[0]);
3288     priv->param_country[1] = toupper(priv->param_country[1]);
3289     /* doesn't support EU as country code, use FI instead */
3290     if (!strcmp(priv->param_country, "EU"))
3291         strcpy(priv->param_country, "FI");
3292
3293     if (priv->param_power_save < 0)
3294         priv->param_power_save = 0;
3295     else if (priv->param_power_save > 2)
3296         priv->param_power_save = 2;
3297
3298     if (priv->param_power_output < 0)
3299         priv->param_power_output = 0;
3300     else if (priv->param_power_output > 3)
3301         priv->param_power_output = 3;
3302
3303     if (priv->param_roamtrigger < -80)
3304         priv->param_roamtrigger = -80;
3305     else if (priv->param_roamtrigger > -60)
3306         priv->param_roamtrigger = -60;
3307
3308     if (priv->param_roamdelta < 0)
3309         priv->param_roamdelta = 0;
3310     else if (priv->param_roamdelta > 2)
3311         priv->param_roamdelta = 2;
3312
3313     if (modparam_workaround_interval < 0)
3314         priv->param_workaround_interval = 500;
3315     else
3316         priv->param_workaround_interval = modparam_workaround_interval;
3317 }
3318
3319 static int unknown_early_init(struct usbnet *usbdev)
3320 {
3321     /* copy module parameters for unknown so that iwconfig reports txpower
3322      * and workaround parameter is copied to private structure correctly.
3323      */
3324     rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3325
3326     /* This is unknown device, so do not try set configuration parameters.
3327      */
3328
3329     return 0;
3330 }
3331
3332 static int bcm4320a_early_init(struct usbnet *usbdev)
3333 {
3334     /* copy module parameters for bcm4320a so that iwconfig reports txpower
3335      * and workaround parameter is copied to private structure correctly.
3336      */
3337     rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3338
3339     /* bcm4320a doesn't handle configuration parameters well. Try
3340      * set any and you get partially zeroed mac and broken device.
3341      */
3342
3343     return 0;
3344 }
3345
3346 static int bcm4320b_early_init(struct usbnet *usbdev)
3347 {
3348     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3349     char buf[8];
3350
3351     rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3352
3353     /* Early initialization settings, setting these won't have effect
3354      * if called after generic_rndis_bind().
3355      */
3356
3357     rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3358     rndis_set_config_parameter_str(usbdev, "FrameBursting",
3359                     priv->param_frameburst ? "1" : "0");
3360     rndis_set_config_parameter_str(usbdev, "Afterburner",
3361                     priv->param_afterburner ? "1" : "0");
3362     sprintf(buf, "%d", priv->param_power_save);
3363     rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3364     sprintf(buf, "%d", priv->param_power_output);
3365     rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3366     sprintf(buf, "%d", priv->param_roamtrigger);
3367     rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3368     sprintf(buf, "%d", priv->param_roamdelta);
3369     rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3370
3371     return 0;
3372 }
3373
3374 /* same as rndis_netdev_ops but with local multicast handler */
3375 static const struct net_device_ops rndis_wlan_netdev_ops = {
3376     .ndo_open       = usbnet_open,
3377     .ndo_stop       = usbnet_stop,
3378     .ndo_start_xmit     = usbnet_start_xmit,
3379     .ndo_tx_timeout     = usbnet_tx_timeout,
3380     .ndo_get_stats64    = dev_get_tstats64,
3381     .ndo_set_mac_address    = eth_mac_addr,
3382     .ndo_validate_addr  = eth_validate_addr,
3383     .ndo_set_rx_mode    = rndis_wlan_set_multicast_list,
3384 };
3385
3386 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3387 {
3388     struct wiphy *wiphy;
3389     struct rndis_wlan_private *priv;
3390     int retval, len;
3391     __le32 tmp;
3392
3393     /* allocate wiphy and rndis private data
3394      * NOTE: We only support a single virtual interface, so wiphy
3395      * and wireless_dev are somewhat synonymous for this device.
3396      */
3397     wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3398     if (!wiphy)
3399         return -ENOMEM;
3400
3401     priv = wiphy_priv(wiphy);
3402     usbdev->net->ieee80211_ptr = &priv->wdev;
3403     priv->wdev.wiphy = wiphy;
3404     priv->wdev.iftype = NL80211_IFTYPE_STATION;
3405
3406     /* These have to be initialized before calling generic_rndis_bind().
3407      * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3408      */
3409     usbdev->driver_priv = priv;
3410     priv->usbdev = usbdev;
3411
3412     mutex_init(&priv->command_lock);
3413
3414     /* because rndis_command() sleeps we need to use workqueue */
3415     priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3416     if (!priv->workqueue) {
3417         wiphy_free(wiphy);
3418         return -ENOMEM;
3419     }
3420     INIT_WORK(&priv->work, rndis_wlan_worker);
3421     INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3422     INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3423
3424     /* try bind rndis_host */
3425     retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3426     if (retval < 0)
3427         goto fail;
3428
3429     /* generic_rndis_bind set packet filter to multicast_all+
3430      * promisc mode which doesn't work well for our devices (device
3431      * picks up rssi to closest station instead of to access point).
3432      *
3433      * rndis_host wants to avoid all OID as much as possible
3434      * so do promisc/multicast handling in rndis_wlan.
3435      */
3436     usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3437
3438     tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3439     retval = rndis_set_oid(usbdev,
3440                    RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3441                    &tmp, sizeof(tmp));
3442
3443     len = sizeof(tmp);
3444     retval = rndis_query_oid(usbdev,
3445                  RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3446                  &tmp, &len);
3447     priv->multicast_size = le32_to_cpu(tmp);
3448     if (retval < 0 || priv->multicast_size < 0)
3449         priv->multicast_size = 0;
3450     if (priv->multicast_size > 0)
3451         usbdev->net->flags |= IFF_MULTICAST;
3452     else
3453         usbdev->net->flags &= ~IFF_MULTICAST;
3454
3455     /* fill-out wiphy structure and register w/ cfg80211 */
3456     memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3457     wiphy->privid = rndis_wiphy_privid;
3458     wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3459                     | BIT(NL80211_IFTYPE_ADHOC);
3460     wiphy->max_scan_ssids = 1;
3461
3462     /* TODO: fill-out band/encr information based on priv->caps */
3463     rndis_wlan_get_caps(usbdev, wiphy);
3464
3465     memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3466     memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3467     priv->band.channels = priv->channels;
3468     priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3469     priv->band.bitrates = priv->rates;
3470     priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3471     wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3472     wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3473
3474     memcpy(priv->cipher_suites, rndis_cipher_suites,
3475                         sizeof(rndis_cipher_suites));
3476     wiphy->cipher_suites = priv->cipher_suites;
3477     wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3478
3479     set_wiphy_dev(wiphy, &usbdev->udev->dev);
3480
3481     if (wiphy_register(wiphy)) {
3482         retval = -ENODEV;
3483         goto fail;
3484     }
3485
3486     set_default_iw_params(usbdev);
3487
3488     priv->power_mode = -1;
3489
3490     /* set default rts/frag */
3491     rndis_set_wiphy_params(wiphy,
3492             WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3493
3494     /* turn radio off on init */
3495     priv->radio_on = false;
3496     disassociate(usbdev, false);
3497     netif_carrier_off(usbdev->net);
3498
3499     return 0;
3500
3501 fail:
3502     cancel_delayed_work_sync(&priv->dev_poller_work);
3503     cancel_delayed_work_sync(&priv->scan_work);
3504     cancel_work_sync(&priv->work);
3505     destroy_workqueue(priv->workqueue);
3506
3507     wiphy_free(wiphy);
3508     return retval;
3509 }
3510
3511 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3512 {
3513     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3514
3515     /* turn radio off */
3516     disassociate(usbdev, false);
3517
3518     cancel_delayed_work_sync(&priv->dev_poller_work);
3519     cancel_delayed_work_sync(&priv->scan_work);
3520     cancel_work_sync(&priv->work);
3521     destroy_workqueue(priv->workqueue);
3522
3523     rndis_unbind(usbdev, intf);
3524
3525     wiphy_unregister(priv->wdev.wiphy);
3526     wiphy_free(priv->wdev.wiphy);
3527 }
3528
3529 static int rndis_wlan_reset(struct usbnet *usbdev)
3530 {
3531     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3532     int retval;
3533
3534     netdev_dbg(usbdev->net, "%s()\n", __func__);
3535
3536     retval = rndis_reset(usbdev);
3537     if (retval)
3538         netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3539
3540     /* rndis_reset cleared multicast list, so restore here.
3541        (set_multicast_list() also turns on current packet filter) */
3542     set_multicast_list(usbdev);
3543
3544     queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3545         round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3546
3547     return deauthenticate(usbdev);
3548 }
3549
3550 static int rndis_wlan_stop(struct usbnet *usbdev)
3551 {
3552     struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3553     int retval;
3554     __le32 filter;
3555
3556     netdev_dbg(usbdev->net, "%s()\n", __func__);
3557
3558     retval = disassociate(usbdev, false);
3559
3560     priv->work_pending = 0;
3561     cancel_delayed_work_sync(&priv->dev_poller_work);
3562     cancel_delayed_work_sync(&priv->scan_work);
3563     cancel_work_sync(&priv->work);
3564     flush_workqueue(priv->workqueue);
3565
3566     if (priv->scan_request) {
3567         struct cfg80211_scan_info info = {
3568             .aborted = true,
3569         };
3570
3571         cfg80211_scan_done(priv->scan_request, &info);
3572         priv->scan_request = NULL;
3573     }
3574
3575     /* Set current packet filter zero to block receiving data packets from
3576        device. */
3577     filter = 0;
3578     rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3579                                 sizeof(filter));
3580
3581     return retval;
3582 }
3583
3584 static const struct driver_info bcm4320b_info = {
3585     .description =  "Wireless RNDIS device, BCM4320b based",
3586     .flags =    FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3587                 FLAG_AVOID_UNLINK_URBS,
3588     .bind =     rndis_wlan_bind,
3589     .unbind =   rndis_wlan_unbind,
3590     .status =   rndis_status,
3591     .rx_fixup = rndis_rx_fixup,
3592     .tx_fixup = rndis_tx_fixup,
3593     .reset =    rndis_wlan_reset,
3594     .stop =     rndis_wlan_stop,
3595     .early_init =   bcm4320b_early_init,
3596     .indication =   rndis_wlan_indication,
3597 };
3598
3599 static const struct driver_info bcm4320a_info = {
3600     .description =  "Wireless RNDIS device, BCM4320a based",
3601     .flags =    FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3602                 FLAG_AVOID_UNLINK_URBS,
3603     .bind =     rndis_wlan_bind,
3604     .unbind =   rndis_wlan_unbind,
3605     .status =   rndis_status,
3606     .rx_fixup = rndis_rx_fixup,
3607     .tx_fixup = rndis_tx_fixup,
3608     .reset =    rndis_wlan_reset,
3609     .stop =     rndis_wlan_stop,
3610     .early_init =   bcm4320a_early_init,
3611     .indication =   rndis_wlan_indication,
3612 };
3613
3614 static const struct driver_info rndis_wlan_info = {
3615     .description =  "Wireless RNDIS device",
3616     .flags =    FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3617                 FLAG_AVOID_UNLINK_URBS,
3618     .bind =     rndis_wlan_bind,
3619     .unbind =   rndis_wlan_unbind,
3620     .status =   rndis_status,
3621     .rx_fixup = rndis_rx_fixup,
3622     .tx_fixup = rndis_tx_fixup,
3623     .reset =    rndis_wlan_reset,
3624     .stop =     rndis_wlan_stop,
3625     .early_init =   unknown_early_init,
3626     .indication =   rndis_wlan_indication,
3627 };
3628
3629 /*-------------------------------------------------------------------------*/
3630
3631 static const struct usb_device_id products [] = {
3632 #define RNDIS_MASTER_INTERFACE \
3633     .bInterfaceClass    = USB_CLASS_COMM, \
3634     .bInterfaceSubClass = 2 /* ACM */, \
3635     .bInterfaceProtocol = 0x0ff
3636
3637 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3638  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3639  */
3640 {
3641     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3642               | USB_DEVICE_ID_MATCH_DEVICE,
3643     .idVendor       = 0x0411,
3644     .idProduct      = 0x00bc,   /* Buffalo WLI-U2-KG125S */
3645     RNDIS_MASTER_INTERFACE,
3646     .driver_info        = (unsigned long) &bcm4320b_info,
3647 }, {
3648     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3649               | USB_DEVICE_ID_MATCH_DEVICE,
3650     .idVendor       = 0x0baf,
3651     .idProduct      = 0x011b,   /* U.S. Robotics USR5421 */
3652     RNDIS_MASTER_INTERFACE,
3653     .driver_info        = (unsigned long) &bcm4320b_info,
3654 }, {
3655     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3656               | USB_DEVICE_ID_MATCH_DEVICE,
3657     .idVendor       = 0x050d,
3658     .idProduct      = 0x011b,   /* Belkin F5D7051 */
3659     RNDIS_MASTER_INTERFACE,
3660     .driver_info        = (unsigned long) &bcm4320b_info,
3661 }, {
3662     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3663               | USB_DEVICE_ID_MATCH_DEVICE,
3664     .idVendor       = 0x1799,   /* Belkin has two vendor ids */
3665     .idProduct      = 0x011b,   /* Belkin F5D7051 */
3666     RNDIS_MASTER_INTERFACE,
3667     .driver_info        = (unsigned long) &bcm4320b_info,
3668 }, {
3669     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3670               | USB_DEVICE_ID_MATCH_DEVICE,
3671     .idVendor       = 0x13b1,
3672     .idProduct      = 0x0014,   /* Linksys WUSB54GSv2 */
3673     RNDIS_MASTER_INTERFACE,
3674     .driver_info        = (unsigned long) &bcm4320b_info,
3675 }, {
3676     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3677               | USB_DEVICE_ID_MATCH_DEVICE,
3678     .idVendor       = 0x13b1,
3679     .idProduct      = 0x0026,   /* Linksys WUSB54GSC */
3680     RNDIS_MASTER_INTERFACE,
3681     .driver_info        = (unsigned long) &bcm4320b_info,
3682 }, {
3683     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3684               | USB_DEVICE_ID_MATCH_DEVICE,
3685     .idVendor       = 0x0b05,
3686     .idProduct      = 0x1717,   /* Asus WL169gE */
3687     RNDIS_MASTER_INTERFACE,
3688     .driver_info        = (unsigned long) &bcm4320b_info,
3689 }, {
3690     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3691               | USB_DEVICE_ID_MATCH_DEVICE,
3692     .idVendor       = 0x0a5c,
3693     .idProduct      = 0xd11b,   /* Eminent EM4045 */
3694     RNDIS_MASTER_INTERFACE,
3695     .driver_info        = (unsigned long) &bcm4320b_info,
3696 }, {
3697     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3698               | USB_DEVICE_ID_MATCH_DEVICE,
3699     .idVendor       = 0x1690,
3700     .idProduct      = 0x0715,   /* BT Voyager 1055 */
3701     RNDIS_MASTER_INTERFACE,
3702     .driver_info        = (unsigned long) &bcm4320b_info,
3703 },
3704 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3705  * parameters available, hardware probably contain older firmware version with
3706  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3707  */
3708 {
3709     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3710               | USB_DEVICE_ID_MATCH_DEVICE,
3711     .idVendor       = 0x13b1,
3712     .idProduct      = 0x000e,   /* Linksys WUSB54GSv1 */
3713     RNDIS_MASTER_INTERFACE,
3714     .driver_info        = (unsigned long) &bcm4320a_info,
3715 }, {
3716     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3717               | USB_DEVICE_ID_MATCH_DEVICE,
3718     .idVendor       = 0x0baf,
3719     .idProduct      = 0x0111,   /* U.S. Robotics USR5420 */
3720     RNDIS_MASTER_INTERFACE,
3721     .driver_info        = (unsigned long) &bcm4320a_info,
3722 }, {
3723     .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3724               | USB_DEVICE_ID_MATCH_DEVICE,
3725     .idVendor       = 0x0411,
3726     .idProduct      = 0x004b,   /* BUFFALO WLI-USB-G54 */
3727     RNDIS_MASTER_INTERFACE,
3728     .driver_info        = (unsigned long) &bcm4320a_info,
3729 },
3730 /* Generic Wireless RNDIS devices that we don't have exact
3731  * idVendor/idProduct/chip yet.
3732  */
3733 {
3734     /* RNDIS is MSFT's un-official variant of CDC ACM */
3735     USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3736     .driver_info = (unsigned long) &rndis_wlan_info,
3737 }, {
3738     /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3739     USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3740     .driver_info = (unsigned long) &rndis_wlan_info,
3741 },
3742     { },        // END
3743 };
3744 MODULE_DEVICE_TABLE(usb, products);
3745
3746 static struct usb_driver rndis_wlan_driver = {
3747     .name =     "rndis_wlan",
3748     .id_table = products,
3749     .probe =    usbnet_probe,
3750     .disconnect =   usbnet_disconnect,
3751     .suspend =  usbnet_suspend,
3752     .resume =   usbnet_resume,
3753     .disable_hub_initiated_lpm = 1,
3754 };
3755
3756 module_usb_driver(rndis_wlan_driver);
3757
3758 MODULE_AUTHOR("Bjorge Dijkstra");
3759 MODULE_AUTHOR("Jussi Kivilinna");
3760 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3761 MODULE_LICENSE("GPL");
3762