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/drivers/net/wireless/rndis_wlan.c

http://github.com/mirrors/linux
C | 3774 lines | 2891 code | 650 blank | 233 comment | 404 complexity | 2bd64ccdafb1f4dfc0b593a998f806cc MD5 | raw file
   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Driver for RNDIS based wireless USB devices.
   4 *
   5 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
   6 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi>
   7 *
   8 *  Portions of this file are based on NDISwrapper project,
   9 *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
  10 *  http://ndiswrapper.sourceforge.net/
  11 */
  12
  13// #define	DEBUG			// error path messages, extra info
  14// #define	VERBOSE			// more; success messages
  15
  16#include <linux/module.h>
  17#include <linux/netdevice.h>
  18#include <linux/etherdevice.h>
  19#include <linux/ethtool.h>
  20#include <linux/workqueue.h>
  21#include <linux/mutex.h>
  22#include <linux/mii.h>
  23#include <linux/usb.h>
  24#include <linux/usb/cdc.h>
  25#include <linux/ieee80211.h>
  26#include <linux/if_arp.h>
  27#include <linux/ctype.h>
  28#include <linux/spinlock.h>
  29#include <linux/slab.h>
  30#include <net/cfg80211.h>
  31#include <linux/usb/usbnet.h>
  32#include <linux/usb/rndis_host.h>
  33
  34
  35/* NOTE: All these are settings for Broadcom chipset */
  36static char modparam_country[4] = "EU";
  37module_param_string(country, modparam_country, 4, 0444);
  38MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  39
  40static int modparam_frameburst = 1;
  41module_param_named(frameburst, modparam_frameburst, int, 0444);
  42MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  43
  44static int modparam_afterburner = 0;
  45module_param_named(afterburner, modparam_afterburner, int, 0444);
  46MODULE_PARM_DESC(afterburner,
  47	"enable afterburner aka '125 High Speed Mode' (default: off)");
  48
  49static int modparam_power_save = 0;
  50module_param_named(power_save, modparam_power_save, int, 0444);
  51MODULE_PARM_DESC(power_save,
  52	"set power save mode: 0=off, 1=on, 2=fast (default: off)");
  53
  54static int modparam_power_output = 3;
  55module_param_named(power_output, modparam_power_output, int, 0444);
  56MODULE_PARM_DESC(power_output,
  57	"set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  58
  59static int modparam_roamtrigger = -70;
  60module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  61MODULE_PARM_DESC(roamtrigger,
  62	"set roaming dBm trigger: -80=optimize for distance, "
  63				"-60=bandwidth (default: -70)");
  64
  65static int modparam_roamdelta = 1;
  66module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  67MODULE_PARM_DESC(roamdelta,
  68	"set roaming tendency: 0=aggressive, 1=moderate, "
  69				"2=conservative (default: moderate)");
  70
  71static int modparam_workaround_interval;
  72module_param_named(workaround_interval, modparam_workaround_interval,
  73							int, 0444);
  74MODULE_PARM_DESC(workaround_interval,
  75	"set stall workaround interval in msecs (0=disabled) (default: 0)");
  76
  77/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
  78#define	WL_NOISE	-96	/* typical noise level in dBm */
  79#define	WL_SIGMAX	-32	/* typical maximum signal level in dBm */
  80
  81
  82/* Assume that Broadcom 4320 (only chipset at time of writing known to be
  83 * based on wireless rndis) has default txpower of 13dBm.
  84 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
  85 *  100% : 20 mW ~ 13dBm
  86 *   75% : 15 mW ~ 12dBm
  87 *   50% : 10 mW ~ 10dBm
  88 *   25% :  5 mW ~  7dBm
  89 */
  90#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
  91#define BCM4320_DEFAULT_TXPOWER_DBM_75  12
  92#define BCM4320_DEFAULT_TXPOWER_DBM_50  10
  93#define BCM4320_DEFAULT_TXPOWER_DBM_25  7
  94
  95/* Known device types */
  96#define RNDIS_UNKNOWN	0
  97#define RNDIS_BCM4320A	1
  98#define RNDIS_BCM4320B	2
  99
 100
 101/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 102 * slightly modified for datatype endianess, etc
 103 */
 104#define NDIS_802_11_LENGTH_SSID 32
 105#define NDIS_802_11_LENGTH_RATES 8
 106#define NDIS_802_11_LENGTH_RATES_EX 16
 107
 108enum ndis_80211_net_type {
 109	NDIS_80211_TYPE_FREQ_HOP,
 110	NDIS_80211_TYPE_DIRECT_SEQ,
 111	NDIS_80211_TYPE_OFDM_A,
 112	NDIS_80211_TYPE_OFDM_G
 113};
 114
 115enum ndis_80211_net_infra {
 116	NDIS_80211_INFRA_ADHOC,
 117	NDIS_80211_INFRA_INFRA,
 118	NDIS_80211_INFRA_AUTO_UNKNOWN
 119};
 120
 121enum ndis_80211_auth_mode {
 122	NDIS_80211_AUTH_OPEN,
 123	NDIS_80211_AUTH_SHARED,
 124	NDIS_80211_AUTH_AUTO_SWITCH,
 125	NDIS_80211_AUTH_WPA,
 126	NDIS_80211_AUTH_WPA_PSK,
 127	NDIS_80211_AUTH_WPA_NONE,
 128	NDIS_80211_AUTH_WPA2,
 129	NDIS_80211_AUTH_WPA2_PSK
 130};
 131
 132enum ndis_80211_encr_status {
 133	NDIS_80211_ENCR_WEP_ENABLED,
 134	NDIS_80211_ENCR_DISABLED,
 135	NDIS_80211_ENCR_WEP_KEY_ABSENT,
 136	NDIS_80211_ENCR_NOT_SUPPORTED,
 137	NDIS_80211_ENCR_TKIP_ENABLED,
 138	NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 139	NDIS_80211_ENCR_CCMP_ENABLED,
 140	NDIS_80211_ENCR_CCMP_KEY_ABSENT
 141};
 142
 143enum ndis_80211_priv_filter {
 144	NDIS_80211_PRIV_ACCEPT_ALL,
 145	NDIS_80211_PRIV_8021X_WEP
 146};
 147
 148enum ndis_80211_status_type {
 149	NDIS_80211_STATUSTYPE_AUTHENTICATION,
 150	NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 151	NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 152	NDIS_80211_STATUSTYPE_RADIOSTATE,
 153};
 154
 155enum ndis_80211_media_stream_mode {
 156	NDIS_80211_MEDIA_STREAM_OFF,
 157	NDIS_80211_MEDIA_STREAM_ON
 158};
 159
 160enum ndis_80211_radio_status {
 161	NDIS_80211_RADIO_STATUS_ON,
 162	NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 163	NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 164};
 165
 166enum ndis_80211_addkey_bits {
 167	NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 168	NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 169	NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 170	NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 171};
 172
 173enum ndis_80211_addwep_bits {
 174	NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 175	NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 176};
 177
 178enum ndis_80211_power_mode {
 179	NDIS_80211_POWER_MODE_CAM,
 180	NDIS_80211_POWER_MODE_MAX_PSP,
 181	NDIS_80211_POWER_MODE_FAST_PSP,
 182};
 183
 184enum ndis_80211_pmkid_cand_list_flag_bits {
 185	NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
 186};
 187
 188struct ndis_80211_auth_request {
 189	__le32 length;
 190	u8 bssid[ETH_ALEN];
 191	u8 padding[2];
 192	__le32 flags;
 193} __packed;
 194
 195struct ndis_80211_pmkid_candidate {
 196	u8 bssid[ETH_ALEN];
 197	u8 padding[2];
 198	__le32 flags;
 199} __packed;
 200
 201struct ndis_80211_pmkid_cand_list {
 202	__le32 version;
 203	__le32 num_candidates;
 204	struct ndis_80211_pmkid_candidate candidate_list[0];
 205} __packed;
 206
 207struct ndis_80211_status_indication {
 208	__le32 status_type;
 209	union {
 210		__le32					media_stream_mode;
 211		__le32					radio_status;
 212		struct ndis_80211_auth_request		auth_request[0];
 213		struct ndis_80211_pmkid_cand_list	cand_list;
 214	} u;
 215} __packed;
 216
 217struct ndis_80211_ssid {
 218	__le32 length;
 219	u8 essid[NDIS_802_11_LENGTH_SSID];
 220} __packed;
 221
 222struct ndis_80211_conf_freq_hop {
 223	__le32 length;
 224	__le32 hop_pattern;
 225	__le32 hop_set;
 226	__le32 dwell_time;
 227} __packed;
 228
 229struct ndis_80211_conf {
 230	__le32 length;
 231	__le32 beacon_period;
 232	__le32 atim_window;
 233	__le32 ds_config;
 234	struct ndis_80211_conf_freq_hop fh_config;
 235} __packed;
 236
 237struct ndis_80211_bssid_ex {
 238	__le32 length;
 239	u8 mac[ETH_ALEN];
 240	u8 padding[2];
 241	struct ndis_80211_ssid ssid;
 242	__le32 privacy;
 243	__le32 rssi;
 244	__le32 net_type;
 245	struct ndis_80211_conf config;
 246	__le32 net_infra;
 247	u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 248	__le32 ie_length;
 249	u8 ies[0];
 250} __packed;
 251
 252struct ndis_80211_bssid_list_ex {
 253	__le32 num_items;
 254	struct ndis_80211_bssid_ex bssid[0];
 255} __packed;
 256
 257struct ndis_80211_fixed_ies {
 258	u8 timestamp[8];
 259	__le16 beacon_interval;
 260	__le16 capabilities;
 261} __packed;
 262
 263struct ndis_80211_wep_key {
 264	__le32 size;
 265	__le32 index;
 266	__le32 length;
 267	u8 material[32];
 268} __packed;
 269
 270struct ndis_80211_key {
 271	__le32 size;
 272	__le32 index;
 273	__le32 length;
 274	u8 bssid[ETH_ALEN];
 275	u8 padding[6];
 276	u8 rsc[8];
 277	u8 material[32];
 278} __packed;
 279
 280struct ndis_80211_remove_key {
 281	__le32 size;
 282	__le32 index;
 283	u8 bssid[ETH_ALEN];
 284	u8 padding[2];
 285} __packed;
 286
 287struct ndis_config_param {
 288	__le32 name_offs;
 289	__le32 name_length;
 290	__le32 type;
 291	__le32 value_offs;
 292	__le32 value_length;
 293} __packed;
 294
 295struct ndis_80211_assoc_info {
 296	__le32 length;
 297	__le16 req_ies;
 298	struct req_ie {
 299		__le16 capa;
 300		__le16 listen_interval;
 301		u8 cur_ap_address[ETH_ALEN];
 302	} req_ie;
 303	__le32 req_ie_length;
 304	__le32 offset_req_ies;
 305	__le16 resp_ies;
 306	struct resp_ie {
 307		__le16 capa;
 308		__le16 status_code;
 309		__le16 assoc_id;
 310	} resp_ie;
 311	__le32 resp_ie_length;
 312	__le32 offset_resp_ies;
 313} __packed;
 314
 315struct ndis_80211_auth_encr_pair {
 316	__le32 auth_mode;
 317	__le32 encr_mode;
 318} __packed;
 319
 320struct ndis_80211_capability {
 321	__le32 length;
 322	__le32 version;
 323	__le32 num_pmkids;
 324	__le32 num_auth_encr_pair;
 325	struct ndis_80211_auth_encr_pair auth_encr_pair[0];
 326} __packed;
 327
 328struct ndis_80211_bssid_info {
 329	u8 bssid[ETH_ALEN];
 330	u8 pmkid[16];
 331} __packed;
 332
 333struct ndis_80211_pmkid {
 334	__le32 length;
 335	__le32 bssid_info_count;
 336	struct ndis_80211_bssid_info bssid_info[0];
 337} __packed;
 338
 339/*
 340 *  private data
 341 */
 342#define CAP_MODE_80211A		1
 343#define CAP_MODE_80211B		2
 344#define CAP_MODE_80211G		4
 345#define CAP_MODE_MASK		7
 346
 347#define WORK_LINK_UP		0
 348#define WORK_LINK_DOWN		1
 349#define WORK_SET_MULTICAST_LIST	2
 350
 351#define RNDIS_WLAN_ALG_NONE	0
 352#define RNDIS_WLAN_ALG_WEP	(1<<0)
 353#define RNDIS_WLAN_ALG_TKIP	(1<<1)
 354#define RNDIS_WLAN_ALG_CCMP	(1<<2)
 355
 356#define RNDIS_WLAN_NUM_KEYS		4
 357#define RNDIS_WLAN_KEY_MGMT_NONE	0
 358#define RNDIS_WLAN_KEY_MGMT_802_1X	(1<<0)
 359#define RNDIS_WLAN_KEY_MGMT_PSK		(1<<1)
 360
 361#define COMMAND_BUFFER_SIZE	(CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 362
 363static const struct ieee80211_channel rndis_channels[] = {
 364	{ .center_freq = 2412 },
 365	{ .center_freq = 2417 },
 366	{ .center_freq = 2422 },
 367	{ .center_freq = 2427 },
 368	{ .center_freq = 2432 },
 369	{ .center_freq = 2437 },
 370	{ .center_freq = 2442 },
 371	{ .center_freq = 2447 },
 372	{ .center_freq = 2452 },
 373	{ .center_freq = 2457 },
 374	{ .center_freq = 2462 },
 375	{ .center_freq = 2467 },
 376	{ .center_freq = 2472 },
 377	{ .center_freq = 2484 },
 378};
 379
 380static const struct ieee80211_rate rndis_rates[] = {
 381	{ .bitrate = 10 },
 382	{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 383	{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 384	{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 385	{ .bitrate = 60 },
 386	{ .bitrate = 90 },
 387	{ .bitrate = 120 },
 388	{ .bitrate = 180 },
 389	{ .bitrate = 240 },
 390	{ .bitrate = 360 },
 391	{ .bitrate = 480 },
 392	{ .bitrate = 540 }
 393};
 394
 395static const u32 rndis_cipher_suites[] = {
 396	WLAN_CIPHER_SUITE_WEP40,
 397	WLAN_CIPHER_SUITE_WEP104,
 398	WLAN_CIPHER_SUITE_TKIP,
 399	WLAN_CIPHER_SUITE_CCMP,
 400};
 401
 402struct rndis_wlan_encr_key {
 403	int len;
 404	u32 cipher;
 405	u8 material[32];
 406	u8 bssid[ETH_ALEN];
 407	bool pairwise;
 408	bool tx_key;
 409};
 410
 411/* RNDIS device private data */
 412struct rndis_wlan_private {
 413	struct usbnet *usbdev;
 414
 415	struct wireless_dev wdev;
 416
 417	struct cfg80211_scan_request *scan_request;
 418
 419	struct workqueue_struct *workqueue;
 420	struct delayed_work dev_poller_work;
 421	struct delayed_work scan_work;
 422	struct work_struct work;
 423	struct mutex command_lock;
 424	unsigned long work_pending;
 425	int last_qual;
 426	s32 cqm_rssi_thold;
 427	u32 cqm_rssi_hyst;
 428	int last_cqm_event_rssi;
 429
 430	struct ieee80211_supported_band band;
 431	struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 432	struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 433	u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 434
 435	int device_type;
 436	int caps;
 437	int multicast_size;
 438
 439	/* module parameters */
 440	char param_country[4];
 441	int  param_frameburst;
 442	int  param_afterburner;
 443	int  param_power_save;
 444	int  param_power_output;
 445	int  param_roamtrigger;
 446	int  param_roamdelta;
 447	u32  param_workaround_interval;
 448
 449	/* hardware state */
 450	bool radio_on;
 451	int power_mode;
 452	int infra_mode;
 453	bool connected;
 454	u8 bssid[ETH_ALEN];
 455	u32 current_command_oid;
 456
 457	/* encryption stuff */
 458	u8 encr_tx_key_index;
 459	struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
 460	int  wpa_version;
 461
 462	u8 command_buffer[COMMAND_BUFFER_SIZE];
 463};
 464
 465/*
 466 * cfg80211 ops
 467 */
 468static int rndis_change_virtual_intf(struct wiphy *wiphy,
 469					struct net_device *dev,
 470					enum nl80211_iftype type,
 471					struct vif_params *params);
 472
 473static int rndis_scan(struct wiphy *wiphy,
 474			struct cfg80211_scan_request *request);
 475
 476static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 477
 478static int rndis_set_tx_power(struct wiphy *wiphy,
 479			      struct wireless_dev *wdev,
 480			      enum nl80211_tx_power_setting type,
 481			      int mbm);
 482static int rndis_get_tx_power(struct wiphy *wiphy,
 483			      struct wireless_dev *wdev,
 484			      int *dbm);
 485
 486static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 487				struct cfg80211_connect_params *sme);
 488
 489static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 490				u16 reason_code);
 491
 492static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 493					struct cfg80211_ibss_params *params);
 494
 495static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 496
 497static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 498			 u8 key_index, bool pairwise, const u8 *mac_addr,
 499			 struct key_params *params);
 500
 501static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 502			 u8 key_index, bool pairwise, const u8 *mac_addr);
 503
 504static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 505				 u8 key_index, bool unicast, bool multicast);
 506
 507static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 508			     const u8 *mac, struct station_info *sinfo);
 509
 510static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 511			       int idx, u8 *mac, struct station_info *sinfo);
 512
 513static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 514				struct cfg80211_pmksa *pmksa);
 515
 516static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 517				struct cfg80211_pmksa *pmksa);
 518
 519static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 520
 521static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 522				bool enabled, int timeout);
 523
 524static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 525					struct net_device *dev,
 526					s32 rssi_thold, u32 rssi_hyst);
 527
 528static const struct cfg80211_ops rndis_config_ops = {
 529	.change_virtual_intf = rndis_change_virtual_intf,
 530	.scan = rndis_scan,
 531	.set_wiphy_params = rndis_set_wiphy_params,
 532	.set_tx_power = rndis_set_tx_power,
 533	.get_tx_power = rndis_get_tx_power,
 534	.connect = rndis_connect,
 535	.disconnect = rndis_disconnect,
 536	.join_ibss = rndis_join_ibss,
 537	.leave_ibss = rndis_leave_ibss,
 538	.add_key = rndis_add_key,
 539	.del_key = rndis_del_key,
 540	.set_default_key = rndis_set_default_key,
 541	.get_station = rndis_get_station,
 542	.dump_station = rndis_dump_station,
 543	.set_pmksa = rndis_set_pmksa,
 544	.del_pmksa = rndis_del_pmksa,
 545	.flush_pmksa = rndis_flush_pmksa,
 546	.set_power_mgmt = rndis_set_power_mgmt,
 547	.set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 548};
 549
 550static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 551
 552
 553static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 554{
 555	return (struct rndis_wlan_private *)dev->driver_priv;
 556}
 557
 558static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 559{
 560	switch (priv->param_power_output) {
 561	default:
 562	case 3:
 563		return BCM4320_DEFAULT_TXPOWER_DBM_100;
 564	case 2:
 565		return BCM4320_DEFAULT_TXPOWER_DBM_75;
 566	case 1:
 567		return BCM4320_DEFAULT_TXPOWER_DBM_50;
 568	case 0:
 569		return BCM4320_DEFAULT_TXPOWER_DBM_25;
 570	}
 571}
 572
 573static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 574{
 575	int cipher = priv->encr_keys[idx].cipher;
 576
 577	return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 578		cipher == WLAN_CIPHER_SUITE_TKIP);
 579}
 580
 581static int rndis_cipher_to_alg(u32 cipher)
 582{
 583	switch (cipher) {
 584	default:
 585		return RNDIS_WLAN_ALG_NONE;
 586	case WLAN_CIPHER_SUITE_WEP40:
 587	case WLAN_CIPHER_SUITE_WEP104:
 588		return RNDIS_WLAN_ALG_WEP;
 589	case WLAN_CIPHER_SUITE_TKIP:
 590		return RNDIS_WLAN_ALG_TKIP;
 591	case WLAN_CIPHER_SUITE_CCMP:
 592		return RNDIS_WLAN_ALG_CCMP;
 593	}
 594}
 595
 596static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 597{
 598	switch (akm_suite) {
 599	default:
 600		return RNDIS_WLAN_KEY_MGMT_NONE;
 601	case WLAN_AKM_SUITE_8021X:
 602		return RNDIS_WLAN_KEY_MGMT_802_1X;
 603	case WLAN_AKM_SUITE_PSK:
 604		return RNDIS_WLAN_KEY_MGMT_PSK;
 605	}
 606}
 607
 608#ifdef DEBUG
 609static const char *oid_to_string(u32 oid)
 610{
 611	switch (oid) {
 612#define OID_STR(oid) case oid: return(#oid)
 613		/* from rndis_host.h */
 614		OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 615		OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 616		OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 617		OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 618
 619		/* from rndis_wlan.c */
 620		OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 621		OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 622
 623		OID_STR(RNDIS_OID_GEN_XMIT_OK);
 624		OID_STR(RNDIS_OID_GEN_RCV_OK);
 625		OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 626		OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 627		OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 628
 629		OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
 630		OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
 631		OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
 632
 633		OID_STR(RNDIS_OID_802_11_BSSID);
 634		OID_STR(RNDIS_OID_802_11_SSID);
 635		OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
 636		OID_STR(RNDIS_OID_802_11_ADD_WEP);
 637		OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
 638		OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
 639		OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
 640		OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
 641		OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
 642		OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
 643		OID_STR(RNDIS_OID_802_11_ADD_KEY);
 644		OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
 645		OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
 646		OID_STR(RNDIS_OID_802_11_CAPABILITY);
 647		OID_STR(RNDIS_OID_802_11_PMKID);
 648		OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
 649		OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
 650		OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
 651		OID_STR(RNDIS_OID_802_11_RSSI);
 652		OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
 653		OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
 654		OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
 655		OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
 656		OID_STR(RNDIS_OID_802_11_CONFIGURATION);
 657		OID_STR(RNDIS_OID_802_11_POWER_MODE);
 658		OID_STR(RNDIS_OID_802_11_BSSID_LIST);
 659#undef OID_STR
 660	}
 661
 662	return "?";
 663}
 664#else
 665static const char *oid_to_string(u32 oid)
 666{
 667	return "?";
 668}
 669#endif
 670
 671/* translate error code */
 672static int rndis_error_status(__le32 rndis_status)
 673{
 674	int ret = -EINVAL;
 675	switch (le32_to_cpu(rndis_status)) {
 676	case RNDIS_STATUS_SUCCESS:
 677		ret = 0;
 678		break;
 679	case RNDIS_STATUS_FAILURE:
 680	case RNDIS_STATUS_INVALID_DATA:
 681		ret = -EINVAL;
 682		break;
 683	case RNDIS_STATUS_NOT_SUPPORTED:
 684		ret = -EOPNOTSUPP;
 685		break;
 686	case RNDIS_STATUS_ADAPTER_NOT_READY:
 687	case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 688		ret = -EBUSY;
 689		break;
 690	}
 691	return ret;
 692}
 693
 694static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 695{
 696	struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 697	union {
 698		void			*buf;
 699		struct rndis_msg_hdr	*header;
 700		struct rndis_query	*get;
 701		struct rndis_query_c	*get_c;
 702	} u;
 703	int ret, buflen;
 704	int resplen, respoffs, copylen;
 705
 706	buflen = *len + sizeof(*u.get);
 707	if (buflen < CONTROL_BUFFER_SIZE)
 708		buflen = CONTROL_BUFFER_SIZE;
 709
 710	if (buflen > COMMAND_BUFFER_SIZE) {
 711		u.buf = kmalloc(buflen, GFP_KERNEL);
 712		if (!u.buf)
 713			return -ENOMEM;
 714	} else {
 715		u.buf = priv->command_buffer;
 716	}
 717
 718	mutex_lock(&priv->command_lock);
 719
 720	memset(u.get, 0, sizeof *u.get);
 721	u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 722	u.get->msg_len = cpu_to_le32(sizeof *u.get);
 723	u.get->oid = cpu_to_le32(oid);
 724
 725	priv->current_command_oid = oid;
 726	ret = rndis_command(dev, u.header, buflen);
 727	priv->current_command_oid = 0;
 728	if (ret < 0)
 729		netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 730			   __func__, oid_to_string(oid), ret,
 731			   le32_to_cpu(u.get_c->status));
 732
 733	if (ret == 0) {
 734		resplen = le32_to_cpu(u.get_c->len);
 735		respoffs = le32_to_cpu(u.get_c->offset) + 8;
 736
 737		if (respoffs > buflen) {
 738			/* Device returned data offset outside buffer, error. */
 739			netdev_dbg(dev->net, "%s(%s): received invalid "
 740				"data offset: %d > %d\n", __func__,
 741				oid_to_string(oid), respoffs, buflen);
 742
 743			ret = -EINVAL;
 744			goto exit_unlock;
 745		}
 746
 747		if ((resplen + respoffs) > buflen) {
 748			/* Device would have returned more data if buffer would
 749			 * have been big enough. Copy just the bits that we got.
 750			 */
 751			copylen = buflen - respoffs;
 752		} else {
 753			copylen = resplen;
 754		}
 755
 756		if (copylen > *len)
 757			copylen = *len;
 758
 759		memcpy(data, u.buf + respoffs, copylen);
 760
 761		*len = resplen;
 762
 763		ret = rndis_error_status(u.get_c->status);
 764		if (ret < 0)
 765			netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 766				   __func__, oid_to_string(oid),
 767				   le32_to_cpu(u.get_c->status), ret);
 768	}
 769
 770exit_unlock:
 771	mutex_unlock(&priv->command_lock);
 772
 773	if (u.buf != priv->command_buffer)
 774		kfree(u.buf);
 775	return ret;
 776}
 777
 778static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 779			 int len)
 780{
 781	struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 782	union {
 783		void			*buf;
 784		struct rndis_msg_hdr	*header;
 785		struct rndis_set	*set;
 786		struct rndis_set_c	*set_c;
 787	} u;
 788	int ret, buflen;
 789
 790	buflen = len + sizeof(*u.set);
 791	if (buflen < CONTROL_BUFFER_SIZE)
 792		buflen = CONTROL_BUFFER_SIZE;
 793
 794	if (buflen > COMMAND_BUFFER_SIZE) {
 795		u.buf = kmalloc(buflen, GFP_KERNEL);
 796		if (!u.buf)
 797			return -ENOMEM;
 798	} else {
 799		u.buf = priv->command_buffer;
 800	}
 801
 802	mutex_lock(&priv->command_lock);
 803
 804	memset(u.set, 0, sizeof *u.set);
 805	u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 806	u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 807	u.set->oid = cpu_to_le32(oid);
 808	u.set->len = cpu_to_le32(len);
 809	u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 810	u.set->handle = cpu_to_le32(0);
 811	memcpy(u.buf + sizeof(*u.set), data, len);
 812
 813	priv->current_command_oid = oid;
 814	ret = rndis_command(dev, u.header, buflen);
 815	priv->current_command_oid = 0;
 816	if (ret < 0)
 817		netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 818			   __func__, oid_to_string(oid), ret,
 819			   le32_to_cpu(u.set_c->status));
 820
 821	if (ret == 0) {
 822		ret = rndis_error_status(u.set_c->status);
 823
 824		if (ret < 0)
 825			netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 826				   __func__, oid_to_string(oid),
 827				   le32_to_cpu(u.set_c->status), ret);
 828	}
 829
 830	mutex_unlock(&priv->command_lock);
 831
 832	if (u.buf != priv->command_buffer)
 833		kfree(u.buf);
 834	return ret;
 835}
 836
 837static int rndis_reset(struct usbnet *usbdev)
 838{
 839	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 840	struct rndis_reset *reset;
 841	int ret;
 842
 843	mutex_lock(&priv->command_lock);
 844
 845	reset = (void *)priv->command_buffer;
 846	memset(reset, 0, sizeof(*reset));
 847	reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 848	reset->msg_len = cpu_to_le32(sizeof(*reset));
 849	priv->current_command_oid = 0;
 850	ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 851
 852	mutex_unlock(&priv->command_lock);
 853
 854	if (ret < 0)
 855		return ret;
 856	return 0;
 857}
 858
 859/*
 860 * Specs say that we can only set config parameters only soon after device
 861 * initialization.
 862 *   value_type: 0 = u32, 2 = unicode string
 863 */
 864static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 865						int value_type, void *value)
 866{
 867	struct ndis_config_param *infobuf;
 868	int value_len, info_len, param_len, ret, i;
 869	__le16 *unibuf;
 870	__le32 *dst_value;
 871
 872	if (value_type == 0)
 873		value_len = sizeof(__le32);
 874	else if (value_type == 2)
 875		value_len = strlen(value) * sizeof(__le16);
 876	else
 877		return -EINVAL;
 878
 879	param_len = strlen(param) * sizeof(__le16);
 880	info_len = sizeof(*infobuf) + param_len + value_len;
 881
 882#ifdef DEBUG
 883	info_len += 12;
 884#endif
 885	infobuf = kmalloc(info_len, GFP_KERNEL);
 886	if (!infobuf)
 887		return -ENOMEM;
 888
 889#ifdef DEBUG
 890	info_len -= 12;
 891	/* extra 12 bytes are for padding (debug output) */
 892	memset(infobuf, 0xCC, info_len + 12);
 893#endif
 894
 895	if (value_type == 2)
 896		netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 897			   param, (u8 *)value);
 898	else
 899		netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 900			   param, *(u32 *)value);
 901
 902	infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 903	infobuf->name_length = cpu_to_le32(param_len);
 904	infobuf->type = cpu_to_le32(value_type);
 905	infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 906	infobuf->value_length = cpu_to_le32(value_len);
 907
 908	/* simple string to unicode string conversion */
 909	unibuf = (void *)infobuf + sizeof(*infobuf);
 910	for (i = 0; i < param_len / sizeof(__le16); i++)
 911		unibuf[i] = cpu_to_le16(param[i]);
 912
 913	if (value_type == 2) {
 914		unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 915		for (i = 0; i < value_len / sizeof(__le16); i++)
 916			unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 917	} else {
 918		dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 919		*dst_value = cpu_to_le32(*(u32 *)value);
 920	}
 921
 922#ifdef DEBUG
 923	netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 924	for (i = 0; i < info_len; i += 12) {
 925		u32 *tmp = (u32 *)((u8 *)infobuf + i);
 926		netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 927			   cpu_to_be32(tmp[0]),
 928			   cpu_to_be32(tmp[1]),
 929			   cpu_to_be32(tmp[2]));
 930	}
 931#endif
 932
 933	ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 934							infobuf, info_len);
 935	if (ret != 0)
 936		netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 937			   ret);
 938
 939	kfree(infobuf);
 940	return ret;
 941}
 942
 943static int rndis_set_config_parameter_str(struct usbnet *dev,
 944						char *param, char *value)
 945{
 946	return rndis_set_config_parameter(dev, param, 2, value);
 947}
 948
 949/*
 950 * data conversion functions
 951 */
 952static int level_to_qual(int level)
 953{
 954	int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 955	return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 956}
 957
 958/*
 959 * common functions
 960 */
 961static int set_infra_mode(struct usbnet *usbdev, int mode);
 962static void restore_keys(struct usbnet *usbdev);
 963static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 964					bool *matched);
 965
 966static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 967{
 968	__le32 tmp;
 969
 970	/* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 971	tmp = cpu_to_le32(1);
 972	return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 973							sizeof(tmp));
 974}
 975
 976static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 977{
 978	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 979	int ret;
 980
 981	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 982			    ssid, sizeof(*ssid));
 983	if (ret < 0) {
 984		netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 985		return ret;
 986	}
 987	if (ret == 0) {
 988		priv->radio_on = true;
 989		netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
 990	}
 991
 992	return ret;
 993}
 994
 995static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
 996{
 997	int ret;
 998
 999	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1000			    bssid, ETH_ALEN);
1001	if (ret < 0) {
1002		netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1003			    bssid, ret);
1004		return ret;
1005	}
1006
1007	return ret;
1008}
1009
1010static int clear_bssid(struct usbnet *usbdev)
1011{
1012	static const u8 broadcast_mac[ETH_ALEN] = {
1013		0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1014	};
1015
1016	return set_bssid(usbdev, broadcast_mac);
1017}
1018
1019static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1020{
1021	int ret, len;
1022
1023	len = ETH_ALEN;
1024	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1025			      bssid, &len);
1026
1027	if (ret != 0)
1028		eth_zero_addr(bssid);
1029
1030	return ret;
1031}
1032
1033static int get_association_info(struct usbnet *usbdev,
1034			struct ndis_80211_assoc_info *info, int len)
1035{
1036	return rndis_query_oid(usbdev,
1037			RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1038			info, &len);
1039}
1040
1041static bool is_associated(struct usbnet *usbdev)
1042{
1043	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1044	u8 bssid[ETH_ALEN];
1045	int ret;
1046
1047	if (!priv->radio_on)
1048		return false;
1049
1050	ret = get_bssid(usbdev, bssid);
1051
1052	return (ret == 0 && !is_zero_ether_addr(bssid));
1053}
1054
1055static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1056{
1057	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1058	struct ndis_80211_ssid ssid;
1059	int i, ret = 0;
1060
1061	if (priv->radio_on) {
1062		ret = rndis_set_oid(usbdev,
1063				RNDIS_OID_802_11_DISASSOCIATE,
1064				NULL, 0);
1065		if (ret == 0) {
1066			priv->radio_on = false;
1067			netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1068				   __func__);
1069
1070			if (reset_ssid)
1071				msleep(100);
1072		}
1073	}
1074
1075	/* disassociate causes radio to be turned off; if reset_ssid
1076	 * is given, set random ssid to enable radio */
1077	if (reset_ssid) {
1078		/* Set device to infrastructure mode so we don't get ad-hoc
1079		 * 'media connect' indications with the random ssid.
1080		 */
1081		set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1082
1083		ssid.length = cpu_to_le32(sizeof(ssid.essid));
1084		get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1085		ssid.essid[0] = 0x1;
1086		ssid.essid[1] = 0xff;
1087		for (i = 2; i < sizeof(ssid.essid); i++)
1088			ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1089		ret = set_essid(usbdev, &ssid);
1090	}
1091	return ret;
1092}
1093
1094static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1095				enum nl80211_auth_type auth_type, int keymgmt)
1096{
1097	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1098	__le32 tmp;
1099	int auth_mode, ret;
1100
1101	netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1102		   __func__, wpa_version, auth_type, keymgmt);
1103
1104	if (wpa_version & NL80211_WPA_VERSION_2) {
1105		if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1106			auth_mode = NDIS_80211_AUTH_WPA2;
1107		else
1108			auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1109	} else if (wpa_version & NL80211_WPA_VERSION_1) {
1110		if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1111			auth_mode = NDIS_80211_AUTH_WPA;
1112		else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1113			auth_mode = NDIS_80211_AUTH_WPA_PSK;
1114		else
1115			auth_mode = NDIS_80211_AUTH_WPA_NONE;
1116	} else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1117		auth_mode = NDIS_80211_AUTH_SHARED;
1118	else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1119		auth_mode = NDIS_80211_AUTH_OPEN;
1120	else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1121		auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1122	else
1123		return -ENOTSUPP;
1124
1125	tmp = cpu_to_le32(auth_mode);
1126	ret = rndis_set_oid(usbdev,
1127			    RNDIS_OID_802_11_AUTHENTICATION_MODE,
1128			    &tmp, sizeof(tmp));
1129	if (ret != 0) {
1130		netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1131			    ret);
1132		return ret;
1133	}
1134
1135	priv->wpa_version = wpa_version;
1136
1137	return 0;
1138}
1139
1140static int set_priv_filter(struct usbnet *usbdev)
1141{
1142	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1143	__le32 tmp;
1144
1145	netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1146		   __func__, priv->wpa_version);
1147
1148	if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1149	    priv->wpa_version & NL80211_WPA_VERSION_1)
1150		tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1151	else
1152		tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1153
1154	return rndis_set_oid(usbdev,
1155			     RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1156			     sizeof(tmp));
1157}
1158
1159static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1160{
1161	__le32 tmp;
1162	int encr_mode, ret;
1163
1164	netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1165		   __func__, pairwise, groupwise);
1166
1167	if (pairwise & RNDIS_WLAN_ALG_CCMP)
1168		encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1169	else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1170		encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1171	else if (pairwise & RNDIS_WLAN_ALG_WEP)
1172		encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1173	else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1174		encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1175	else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1176		encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1177	else
1178		encr_mode = NDIS_80211_ENCR_DISABLED;
1179
1180	tmp = cpu_to_le32(encr_mode);
1181	ret = rndis_set_oid(usbdev,
1182			RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1183			sizeof(tmp));
1184	if (ret != 0) {
1185		netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1186			    ret);
1187		return ret;
1188	}
1189
1190	return 0;
1191}
1192
1193static int set_infra_mode(struct usbnet *usbdev, int mode)
1194{
1195	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1196	__le32 tmp;
1197	int ret;
1198
1199	netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1200		   __func__, priv->infra_mode);
1201
1202	tmp = cpu_to_le32(mode);
1203	ret = rndis_set_oid(usbdev,
1204			    RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1205			    &tmp, sizeof(tmp));
1206	if (ret != 0) {
1207		netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1208			    ret);
1209		return ret;
1210	}
1211
1212	/* NDIS drivers clear keys when infrastructure mode is
1213	 * changed. But Linux tools assume otherwise. So set the
1214	 * keys */
1215	restore_keys(usbdev);
1216
1217	priv->infra_mode = mode;
1218	return 0;
1219}
1220
1221static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1222{
1223	__le32 tmp;
1224
1225	netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1226
1227	if (rts_threshold == -1 || rts_threshold > 2347)
1228		rts_threshold = 2347;
1229
1230	tmp = cpu_to_le32(rts_threshold);
1231	return rndis_set_oid(usbdev,
1232			     RNDIS_OID_802_11_RTS_THRESHOLD,
1233			     &tmp, sizeof(tmp));
1234}
1235
1236static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1237{
1238	__le32 tmp;
1239
1240	netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1241
1242	if (frag_threshold < 256 || frag_threshold > 2346)
1243		frag_threshold = 2346;
1244
1245	tmp = cpu_to_le32(frag_threshold);
1246	return rndis_set_oid(usbdev,
1247			RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1248			&tmp, sizeof(tmp));
1249}
1250
1251static void set_default_iw_params(struct usbnet *usbdev)
1252{
1253	set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1254	set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1255						RNDIS_WLAN_KEY_MGMT_NONE);
1256	set_priv_filter(usbdev);
1257	set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1258}
1259
1260static int deauthenticate(struct usbnet *usbdev)
1261{
1262	int ret;
1263
1264	ret = disassociate(usbdev, true);
1265	set_default_iw_params(usbdev);
1266	return ret;
1267}
1268
1269static int set_channel(struct usbnet *usbdev, int channel)
1270{
1271	struct ndis_80211_conf config;
1272	unsigned int dsconfig;
1273	int len, ret;
1274
1275	netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1276
1277	/* this OID is valid only when not associated */
1278	if (is_associated(usbdev))
1279		return 0;
1280
1281	dsconfig = 1000 *
1282		ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1283
1284	len = sizeof(config);
1285	ret = rndis_query_oid(usbdev,
1286			RNDIS_OID_802_11_CONFIGURATION,
1287			&config, &len);
1288	if (ret < 0) {
1289		netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1290			   __func__);
1291		return ret;
1292	}
1293
1294	config.ds_config = cpu_to_le32(dsconfig);
1295	ret = rndis_set_oid(usbdev,
1296			RNDIS_OID_802_11_CONFIGURATION,
1297			&config, sizeof(config));
1298
1299	netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1300
1301	return ret;
1302}
1303
1304static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1305						     u32 *beacon_period)
1306{
1307	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1308	struct ieee80211_channel *channel;
1309	struct ndis_80211_conf config;
1310	int len, ret;
1311
1312	/* Get channel and beacon interval */
1313	len = sizeof(config);
1314	ret = rndis_query_oid(usbdev,
1315			RNDIS_OID_802_11_CONFIGURATION,
1316			&config, &len);
1317	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1318				__func__, ret);
1319	if (ret < 0)
1320		return NULL;
1321
1322	channel = ieee80211_get_channel(priv->wdev.wiphy,
1323				KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1324	if (!channel)
1325		return NULL;
1326
1327	if (beacon_period)
1328		*beacon_period = le32_to_cpu(config.beacon_period);
1329	return channel;
1330}
1331
1332/* index must be 0 - N, as per NDIS  */
1333static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1334								u8 index)
1335{
1336	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1337	struct ndis_80211_wep_key ndis_key;
1338	u32 cipher;
1339	int ret;
1340
1341	netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1342		   __func__, index, key_len);
1343
1344	if (index >= RNDIS_WLAN_NUM_KEYS)
1345		return -EINVAL;
1346
1347	if (key_len == 5)
1348		cipher = WLAN_CIPHER_SUITE_WEP40;
1349	else if (key_len == 13)
1350		cipher = WLAN_CIPHER_SUITE_WEP104;
1351	else
1352		return -EINVAL;
1353
1354	memset(&ndis_key, 0, sizeof(ndis_key));
1355
1356	ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1357	ndis_key.length = cpu_to_le32(key_len);
1358	ndis_key.index = cpu_to_le32(index);
1359	memcpy(&ndis_key.material, key, key_len);
1360
1361	if (index == priv->encr_tx_key_index) {
1362		ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1363		ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1364							RNDIS_WLAN_ALG_NONE);
1365		if (ret)
1366			netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1367				    ret);
1368	}
1369
1370	ret = rndis_set_oid(usbdev,
1371			RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1372			sizeof(ndis_key));
1373	if (ret != 0) {
1374		netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1375			    index + 1, ret);
1376		return ret;
1377	}
1378
1379	priv->encr_keys[index].len = key_len;
1380	priv->encr_keys[index].cipher = cipher;
1381	memcpy(&priv->encr_keys[index].material, key, key_len);
1382	eth_broadcast_addr(priv->encr_keys[index].bssid);
1383
1384	return 0;
1385}
1386
1387static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1388			u8 index, const u8 *addr, const u8 *rx_seq,
1389			int seq_len, u32 cipher, __le32 flags)
1390{
1391	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1392	struct ndis_80211_key ndis_key;
1393	bool is_addr_ok;
1394	int ret;
1395
1396	if (index >= RNDIS_WLAN_NUM_KEYS) {
1397		netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1398			   __func__, index);
1399		return -EINVAL;
1400	}
1401	if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1402		netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1403			   __func__, key_len);
1404		return -EINVAL;
1405	}
1406	if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1407		if (!rx_seq || seq_len <= 0) {
1408			netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1409				   __func__);
1410			return -EINVAL;
1411		}
1412		if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1413			netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1414			return -EINVAL;
1415		}
1416	}
1417
1418	is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1419					!is_broadcast_ether_addr(addr);
1420	if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1421		netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1422			   __func__, addr);
1423		return -EINVAL;
1424	}
1425
1426	netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1427		   __func__, index,
1428		   !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1429		   !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1430		   !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1431
1432	memset(&ndis_key, 0, sizeof(ndis_key));
1433
1434	ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1435				sizeof(ndis_key.material) + key_len);
1436	ndis_key.length = cpu_to_le32(key_len);
1437	ndis_key.index = cpu_to_le32(index) | flags;
1438
1439	if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1440		/* wpa_supplicant gives us the Michael MIC RX/TX keys in
1441		 * different order than NDIS spec, so swap the order here. */
1442		memcpy(ndis_key.material, key, 16);
1443		memcpy(ndis_key.material + 16, key + 24, 8);
1444		memcpy(ndis_key.material + 24, key + 16, 8);
1445	} else
1446		memcpy(ndis_key.material, key, key_len);
1447
1448	if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1449		memcpy(ndis_key.rsc, rx_seq, seq_len);
1450
1451	if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1452		/* pairwise key */
1453		memcpy(ndis_key.bssid, addr, ETH_ALEN);
1454	} else {
1455		/* group key */
1456		if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1457			eth_broadcast_addr(ndis_key.bssid);
1458		else
1459			get_bssid(usbdev, ndis_key.bssid);
1460	}
1461
1462	ret = rndis_set_oid(usbdev,
1463			RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1464			le32_to_cpu(ndis_key.size));
1465	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1466		   __func__, ret);
1467	if (ret != 0)
1468		return ret;
1469
1470	memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1471	priv->encr_keys[index].len = key_len;
1472	priv->encr_keys[index].cipher = cipher;
1473	memcpy(&priv->encr_keys[index].material, key, key_len);
1474	if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1475		memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1476	else
1477		eth_broadcast_addr(priv->encr_keys[index].bssid);
1478
1479	if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1480		priv->encr_tx_key_index = index;
1481
1482	return 0;
1483}
1484
1485static int restore_key(struct usbnet *usbdev, u8 key_idx)
1486{
1487	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1488	struct rndis_wlan_encr_key key;
1489
1490	if (is_wpa_key(priv, key_idx))
1491		return 0;
1492
1493	key = priv->encr_keys[key_idx];
1494
1495	netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1496
1497	if (key.len == 0)
1498		return 0;
1499
1500	return add_wep_key(usbdev, key.material, key.len, key_idx);
1501}
1502
1503static void restore_keys(struct usbnet *usbdev)
1504{
1505	int i;
1506
1507	for (i = 0; i < 4; i++)
1508		restore_key(usbdev, i);
1509}
1510
1511static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1512{
1513	memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1514}
1515
1516/* remove_key is for both wep and wpa */
1517static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1518{
1519	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1520	struct ndis_80211_remove_key remove_key;
1521	__le32 keyindex;
1522	bool is_wpa;
1523	int ret;
1524
1525	if (index >= RNDIS_WLAN_NUM_KEYS)
1526		return -ENOENT;
1527
1528	if (priv->encr_keys[index].len == 0)
1529		return 0;
1530
1531	is_wpa = is_wpa_key(priv, index);
1532
1533	netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1534		   __func__, index, is_wpa ? "wpa" : "wep",
1535		   priv->encr_keys[index].len);
1536
1537	clear_key(priv, index);
1538
1539	if (is_wpa) {
1540		remove_key.size = cpu_to_le32(sizeof(remove_key));
1541		remove_key.index = cpu_to_le32(index);
1542		if (bssid) {
1543			/* pairwise key */
1544			if (!is_broadcast_ether_addr(bssid))
1545				remove_key.index |=
1546					NDIS_80211_ADDKEY_PAIRWISE_KEY;
1547			memcpy(remove_key.bssid, bssid,
1548					sizeof(remove_key.bssid));
1549		} else
1550			memset(remove_key.bssid, 0xff,
1551						sizeof(remove_key.bssid));
1552
1553		ret = rndis_set_oid(usbdev,
1554				RNDIS_OID_802_11_REMOVE_KEY,
1555				&remove_key, sizeof(remove_key));
1556		if (ret != 0)
1557			return ret;
1558	} else {
1559		keyindex = cpu_to_le32(index);
1560		ret = rndis_set_oid(usbdev,
1561				RNDIS_OID_802_11_REMOVE_WEP,
1562				&keyindex, sizeof(keyindex));
1563		if (ret != 0) {
1564			netdev_warn(usbdev->net,
1565				    "removing encryption key %d failed (%08X)\n",
1566				    index, ret);
1567			return ret;
1568		}
1569	}
1570
1571	/* if it is transmit key, disable encryption */
1572	if (index == priv->encr_tx_key_index)
1573		set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1574
1575	return 0;
1576}
1577
1578static void set_multicast_list(struct usbnet *usbdev)
1579{
1580	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1581	struct netdev_hw_addr *ha;
1582	__le32 filter, basefilter;
1583	int ret;
1584	char *mc_addrs = NULL;
1585	int mc_count;
1586
1587	basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1588					  RNDIS_PACKET_TYPE_BROADCAST);
1589
1590	if (usbdev->net->flags & IFF_PROMISC) {
1591		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1592				      RNDIS_PACKET_TYPE_ALL_LOCAL);
1593	} else if (usbdev->net->flags & IFF_ALLMULTI) {
1594		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1595	}
1596
1597	if (filter != basefilter)
1598		goto set_filter;
1599
1600	/*
1601	 * mc_list should be accessed holding the lock, so copy addresses to
1602	 * local buffer first.
1603	 */
1604	netif_addr_lock_bh(usbdev->net);
1605	mc_count = netdev_mc_count(usbdev->net);
1606	if (mc_count > priv->multicast_size) {
1607		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1608	} else if (mc_count) {
1609		int i = 0;
1610
1611		mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1612		if (!mc_addrs) {
1613			netif_addr_unlock_bh(usbdev->net);
1614			return;
1615		}
1616
1617		netdev_for_each_mc_addr(ha, usbdev->net)
1618			memcpy(mc_addrs + i++ * ETH_ALEN,
1619			       ha->addr, ETH_ALEN);
1620	}
1621	netif_addr_unlock_bh(usbdev->net);
1622
1623	if (filter != basefilter)
1624		goto set_filter;
1625
1626	if (mc_count) {
1627		ret = rndis_set_oid(usbdev,
1628				RNDIS_OID_802_3_MULTICAST_LIST,
1629				mc_addrs, mc_count * ETH_ALEN);
1630		kfree(mc_addrs);
1631		if (ret == 0)
1632			filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1633		else
1634			filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1635
1636		netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1637			   mc_count, priv->multicast_size, ret);
1638	}
1639
1640set_filter:
1641	ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1642							sizeof(filter));
1643	if (ret < 0) {
1644		netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1645			    le32_to_cpu(filter));
1646	}
1647
1648	netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1649		   le32_to_cpu(filter), ret);
1650}
1651
1652#ifdef DEBUG
1653static void debug_print_pmkids(struct usbnet *usbdev,
1654				struct ndis_80211_pmkid *pmkids,
1655				const char *func_str)
1656{
1657	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1658	int i, len, count, max_pmkids, entry_len;
1659
1660	max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1661	len = le32_to_cpu(pmkids->length);
1662	count = le32_to_cpu(pmkids->bssid_info_count);
1663
1664	entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1665
1666	netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1667				"%d)\n", func_str, count, len, entry_len);
1668
1669	if (count > max_pmkids)
1670		count = max_pmkids;
1671
1672	for (i = 0; i < count; i++) {
1673		u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1674
1675		netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1676				"pmkid: %08X:%08X:%08X:%08X\n",
1677				func_str, pmkids->bssid_info[i].bssid,
1678				cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1679				cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1680	}
1681}
1682#else
1683static void debug_print_pmkids(struct usbnet *usbdev,
1684				struct ndis_80211_pmkid *pmkids,
1685				const char *func_str)
1686{
1687	return;
1688}
1689#endif
1690
1691static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1692{
1693	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1694	struct ndis_80211_pmkid *pmkids;
1695	int len, ret, max_pmkids;
1696
1697	max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1698	len = struct_size(pmkids, bssid_info, max_pmkids);
1699
1700	pmkids = kzalloc(len, GFP_KERNEL);
1701	if (!pmkids)
1702		return ERR_PTR(-ENOMEM);
1703
1704	pmkids->length = cpu_to_le32(len);
1705	pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1706
1707	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1708			pmkids, &len);
1709	if (ret < 0) {
1710		netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1711				" -> %d\n", __func__, len, max_pmkids, ret);
1712
1713		kfree(pmkids);
1714		return ERR_PTR(ret);
1715	}
1716
1717	if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1718		pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1719
1720	debug_print_pmkids(usbdev, pmkids, __func__);
1721
1722	return pmkids;
1723}
1724
1725static int set_device_pmkids(struct usbnet *usbdev,
1726				struct ndis_80211_pmkid *pmkids)
1727{
1728	int ret, len, num_pmkids;
1729
1730	num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1731	len = struct_size(pmkids, bssid_info, num_pmkids);
1732	pmkids->length = cpu_to_le32(len);
1733
1734	debug_print_pmkids(usbdev, pmkids, __func__);
1735
1736	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1737			    le32_to_cpu(pmkids->length));
1738	if (ret < 0) {
1739		netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1740				"\n", __func__, len, num_pmkids, ret);
1741	}
1742
1743	kfree(pmkids);
1744	return ret;
1745}
1746
1747static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1748						struct ndis_80211_pmkid *pmkids,
1749						struct cfg80211_pmksa *pmksa,
1750						int max_pmkids)
1751{
1752	int i, err;
1753	unsigned int count;
1754
1755	count = le32_to_cpu(pmkids->bssid_info_count);
1756
1757	if (count > max_pmkids)
1758		count = max_pmkids;
1759
1760	for (i = 0; i < count; i++)
1761		if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1762				     pmksa->bssid))
1763			break;
1764
1765	/* pmkid not found */
1766	if (i == count) {
1767		netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1768					__func__, pmksa->bssid);
1769		err = -ENOENT;
1770		goto error;
1771	}
1772
1773	for (; i + 1 < count; i++)
1774		pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1775
1776	count--;
1777	pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1778	pmkids->bssid_info_count = cpu_to_le32(count);
1779
1780	return pmkids;
1781error:
1782	kfree(pmkids);
1783	return ERR_PTR(err);
1784}
1785
1786static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1787						struct ndis_80211_pmkid *pmkids,
1788						struct cfg80211_pmksa *pmksa,
1789						int max_pmkids)
1790{
1791	struct ndis_80211_pmkid *new_pmkids;
1792	int i, err, newlen;
1793	unsigned int count;
1794
1795	count = le32_to_cpu(pmkids->bssid_info_count);
1796
1797	if (count > max_pmkids)
1798		count = max_pmkids;
1799
1800	/* update with new pmkid */
1801	for (i = 0; i < count; i++) {
1802		if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1803				      pmksa->bssid))
1804			continue;
1805
1806		memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1807								WLAN_PMKID_LEN);
1808
1809		return pmkids;
1810	}
1811
1812	/* out of space, return error */
1813	if (i == max_pmkids) {
1814		netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1815		err = -ENOSPC;
1816		goto error;
1817	}
1818
1819	/* add new pmkid */
1820	newlen = struct_size(pmkids, bssid_info, count + 1);
1821
1822	new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1823	if (!new_pmkids) {
1824		err = -ENOMEM;
1825		goto error;
1826	}
1827	pmkids = new_pmkids;
1828
1829	pmkids->length = cpu_to_le32(newlen);
1830	pmkids->bssid_info_count = cpu_to_le32(count + 1);
1831
1832	memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1833	memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1834
1835	return pmkids;
1836error:
1837	kfree(pmkids);
1838	return ERR_PTR(err);
1839}
1840
1841/*
1842 * cfg80211 ops
1843 */
1844static int rndis_change_virtual_intf(struct wiphy *wiphy,
1845					struct net_device *dev,
1846					enum nl80211_iftype type,
1847					struct vif_params *params)
1848{
1849	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1850	struct usbnet *usbdev = priv->usbdev;
1851	int mode;
1852
1853	switch (type) {
1854	case NL80211_IFTYPE_ADHOC:
1855		mode = NDIS_80211_INFRA_ADHOC;
1856		break;
1857	case NL80211_IFTYPE_STATION:
1858		mode = NDIS_80211_INFRA_INFRA;
1859		break;
1860	default:
1861		return -EINVAL;
1862	}
1863
1864	priv->wdev.iftype = type;
1865
1866	return set_infra_mode(usbdev, mode);
1867}
1868
1869static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1870{
1871	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1872	struct usbnet *usbdev = priv->usbdev;
1873	int err;
1874
1875	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1876		err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1877		if (err < 0)
1878			return err;
1879	}
1880
1881	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1882		err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1883		if (err < 0)
1884			return err;
1885	}
1886
1887	return 0;
1888}
1889
1890static int rndis_set_tx_power(struct wiphy *wiphy,
1891			      struct wireless_dev *wdev,
1892			      enum nl80211_tx_power_setting type,
1893			      int mbm)
1894{
1895	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1896	struct usbnet *usbdev = priv->usbdev;
1897
1898	netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1899		   __func__, type, mbm);
1900
1901	if (mbm < 0 || (mbm % 100))
1902		return -ENOTSUPP;
1903
1904	/* Device doesn't support changing txpower after initialization, only
1905	 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1906	 * currently used.
1907	 */
1908	if (type == NL80211_TX_POWER_AUTOMATIC ||
1909	    MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1910		if (!priv->radio_on)
1911			disassociate(usbdev, true); /* turn on radio */
1912
1913		return 0;
1914	}
1915
1916	return -ENOTSUPP;
1917}
1918
1919static int rndis_get_tx_power(struct wiphy *wiphy,
1920			      struct wireless_dev *wdev,
1921			      int *dbm)
1922{
1923	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1924	struct usbnet *usbdev = priv->usbdev;
1925
1926	*dbm = get_bcm4320_power_dbm(priv);
1927
1928	netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1929
1930	return 0;
1931}
1932
1933#define SCAN_DELAY_JIFFIES (6 * HZ)
1934static int rndis_scan(struct wiphy *wiphy,
1935			struct cfg80211_scan_request *request)
1936{
1937	struct net_device *dev = request->wdev->netdev;
1938	struct usbnet *usbdev = netdev_priv(dev);
1939	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1940	int ret;
1941	int delay = SCAN_DELAY_JIFFIES;
1942
1943	netdev_dbg(usbdev->net, "cfg80211.scan\n");
1944
1945	/* Get current bssid list from device before new scan, as new scan
1946	 * clears internal bssid list.
1947	 */
1948	rndis_check_bssid_list(usbdev, NULL, NULL);
1949
1950	if (priv->scan_request && priv->scan_request != request)
1951		return -EBUSY;
1952
1953	priv->scan_request = request;
1954
1955	ret = rndis_start_bssid_list_scan(usbdev);
1956	if (ret == 0) {
1957		if (priv->device_type == RNDIS_BCM4320A)
1958			delay = HZ;
1959
1960		/* Wait before retrieving scan results from device */
1961		queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1962	}
1963
1964	return ret;
1965}
1966
1967static bool rndis_bss_info_update(struct usbnet *usbdev,
1968				  struct ndis_80211_bssid_ex *bssid)
1969{
1970	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1971	struct ieee80211_channel *channel;
1972	struct cfg80211_bss *bss;
1973	s32 signal;
1974	u64 timestamp;
1975	u16 capability;
1976	u16 beacon_interval;
1977	struct ndis_80211_fixed_ies *fixed;
1978	int ie_len, bssid_len;
1979	u8 *ie;
1980
1981	netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1982		   bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1983
1984	/* parse bssid structure */
1985	bssid_len = le32_to_cpu(bssid->length);
1986
1987	if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1988			sizeof(struct ndis_80211_fixed_ies))
1989		return NULL;
1990
1991	fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1992
1993	ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1994	ie_len = min(bssid_len - (int)sizeof(*bssid),
1995					(int)le32_to_cpu(bssid->ie_length));
1996	ie_len -= sizeof(struct ndis_80211_fixed_ies);
1997	if (ie_len < 0)
1998		return NULL;
1999
2000	/* extract data for cfg80211_inform_bss */
2001	channel = ieee80211_get_channel(priv->wdev.wiphy,
2002			KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2003	if (!channel)
2004		return NULL;
2005
2006	signal = level_to_qual(le32_to_cpu(bssid->rssi));
2007	timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2008	capability = le16_to_cpu(fixed->capabilities);
2009	beacon_interval = le16_to_cpu(fixed->beacon_interval);
2010
2011	bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2012				  CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2013				  timestamp, capability, beacon_interval,
2014				  ie, ie_len, signal, GFP_KERNEL);
2015	cfg80211_put_bss(priv->wdev.wiphy, bss);
2016
2017	return (bss != NULL);
2018}
2019
2020static struct ndis_80211_bssid_ex *next_bssid_list_item(
2021					struct ndis_80211_bssid_ex *bssid,
2022					int *bssid_len, void *buf, int len)
2023{
2024	void *buf_end, *bssid_end;
2025
2026	buf_end = (char *)buf + len;
2027	bssid_end = (char *)bssid + *bssid_len;
2028
2029	if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2030		*bssid_len = 0;
2031		return NULL;
2032	} else {
2033		bssid = (void *)((char *)bssid + *bssid_len);
2034		*bssid_len = le32_to_cpu(bssid->length);
2035		return bssid;
2036	}
2037}
2038
2039static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2040				  int bssid_len, void *buf, int len)
2041{
2042	void *buf_end, *bssid_end;
2043
2044	if (!bssid || bssid_len <= 0 || bssid_len > len)
2045		return false;
2046
2047	buf_end = (char *)buf + len;
2048	bssid_end = (char *)bssid + bssid_len;
2049
2050	return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2051}
2052
2053static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2054					bool *matched)
2055{
2056	void *buf = NULL;
2057	struct ndis_80211_bssid_list_ex *bssid_list;
2058	struct ndis_80211_bssid_ex *bssid;
2059	int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2060
2061	netdev_dbg(usbdev->net, "%s()\n", __func__);
2062
2063	len = CONTROL_BUFFER_SIZE;
2064resize_buf:
2065	buf = kzalloc(len, GFP_KERNEL);
2066	if (!buf) {
2067		ret = -ENOMEM;
2068		goto out;
2069	}
2070
2071	/* BSSID-list might have got bigger last time we checked, keep
2072	 * resizing until it won't get any bigger.
2073	 */
2074	new_len = len;
2075	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2076			      buf, &new_len);
2077	if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2078		goto out;
2079
2080	if (new_len > len) {
2081		len = new_len;
2082		kfree(buf);
2083		goto resize_buf;
2084	}
2085
2086	len = new_len;
2087
2088	bssid_list = buf;
2089	count = le32_to_cpu(bssid_list->num_items);
2090	real_count = 0;
2091	netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2092
2093	bssid_len = 0;
2094	bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2095
2096	/* Device returns incorrect 'num_items'. Workaround by ignoring the
2097	 * received 'num_items' and walking through full bssid buffer instead.
2098	 */
2099	while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2100		if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2101		    matched) {
2102			if (ether_addr_equal(bssid->mac, match_bssid))
2103				*matched = true;
2104		}
2105
2106		real_count++;
2107		bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2108	}
2109
2110	netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2111				" %d\n", __func__, count, real_count);
2112
2113out:
2114	kfree(buf);
2115	return ret;
2116}
2117
2118static void rndis_get_scan_results(struct work_struct *work)
2119{
2120	struct rndis_wlan_private *priv =
2121		container_of(work, struct rndis_wlan_private, scan_work.work);
2122	struct usbnet *usbdev = priv->usbdev;
2123	struct cfg80211_scan_info info = {};
2124	int ret;
2125
2126	netdev_dbg(usbdev->net, "get_scan_results\n");
2127
2128	if (!priv->scan_request)
2129		return;
2130
2131	ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2132
2133	info.aborted = ret < 0;
2134	cfg80211_scan_done(priv->scan_request, &info);
2135
2136	priv->scan_request = NULL;
2137}
2138
2139static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2140					struct cfg80211_connect_params *sme)
2141{
2142	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2143	struct usbnet *usbdev = priv->usbdev;
2144	struct ieee80211_channel *channel = sme->channel;
2145	struct ndis_80211_ssid ssid;
2146	int pairwise = RNDIS_WLAN_ALG_NONE;
2147	int groupwise = RNDIS_WLAN_ALG_NONE;
2148	int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2149	int length, i, ret, chan = -1;
2150
2151	if (channel)
2152		chan = ieee80211_frequency_to_channel(channel->center_freq);
2153
2154	groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2155	for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2156		pairwise |=
2157			rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2158
2159	if (sme->crypto.n_ciphers_pairwise > 0 &&
2160			pairwise == RNDIS_WLAN_ALG_NONE) {
2161		netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2162		return -ENOTSUPP;
2163	}
2164
2165	for (i = 0; i < sme->crypto.n_akm_suites; i++)
2166		keymgmt |=
2167			rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2168
2169	if (sme->crypto.n_akm_suites > 0 &&
2170			keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2171		netdev_err(usbdev->net, "Invalid keymgmt\n");
2172		return -ENOTSUPP;
2173	}
2174
2175	netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2176		   sme->ssid, sme->bssid, chan,
2177		   sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2178		   groupwise, pairwise, keymgmt);
2179
2180	if (is_associated(usbdev))
2181		disassociate(usbdev, false);
2182
2183	ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2184	if (ret < 0) {
2185		netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2186			   ret);
2187		goto err_turn_radio_on;
2188	}
2189
2190	ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2191								keymgmt);
2192	if (ret < 0) {
2193		netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2194			   ret);
2195		goto err_turn_radio_on;
2196	}
2197
2198	set_priv_filter(usbdev);
2199
2200	ret = set_encr_mode(usbdev, pairwise, groupwise);
2201	if (ret < 0) {
2202		netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2203			   ret);
2204		goto err_turn_radio_on;
2205	}
2206
2207	if (channel) {
2208		ret = set_channel(usbdev, chan);
2209		if (ret < 0) {
2210			netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2211				   ret);
2212			goto err_turn_radio_on;
2213		}
2214	}
2215
2216	if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2217		priv->encr_tx_key_index = sme->key_idx;
2218		ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2219		if (ret < 0) {
2220			netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2221				   ret, sme->key_len, sme->key_idx);
2222			goto err_turn_radio_on;
2223		}
2224	}
2225
2226	if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2227				!is_broadcast_ether_addr(sme->bssid)) {
2228		ret = set_bssid(usbdev, sme->bssid);
2229		if (ret < 0) {
2230			netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2231				   ret);
2232			goto err_turn_radio_on;
2233		}
2234	} else
2235		clear_bssid(usbdev);
2236
2237	length = sme->ssid_len;
2238	if (length > NDIS_802_11_LENGTH_SSID)
2239		length = NDIS_802_11_LENGTH_SSID;
2240
2241	memset(&ssid, 0, sizeof(ssid));
2242	ssid.length = cpu_to_le32(length);
2243	memcpy(ssid.essid, sme->ssid, length);
2244
2245	/* Pause and purge rx queue, so we don't pass packets before
2246	 * 'media connect'-indication.
2247	 */
2248	usbnet_pause_rx(usbdev);
2249	usbnet_purge_paused_rxq(usbdev);
2250
2251	ret = set_essid(usbdev, &ssid);
2252	if (ret < 0)
2253		netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2254	return ret;
2255
2256err_turn_radio_on:
2257	disassociate(usbdev, true);
2258
2259	return ret;
2260}
2261
2262static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2263								u16 reason_code)
2264{
2265	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2266	struct usbnet *usbdev = priv->usbdev;
2267
2268	netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2269
2270	priv->connected = false;
2271	eth_zero_addr(priv->bssid);
2272
2273	return deauthenticate(usbdev);
2274}
2275
2276static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2277					struct cfg80211_ibss_params *params)
2278{
2279	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2280	struct usbnet *usbdev = priv->usbdev;
2281	struct ieee80211_channel *channel = params->chandef.chan;
2282	struct ndis_80211_ssid ssid;
2283	enum nl80211_auth_type auth_type;
2284	int ret, alg, length, chan = -1;
2285
2286	if (channel)
2287		chan = ieee80211_frequency_to_channel(channel->center_freq);
2288
2289	/* TODO: How to handle ad-hoc encryption?
2290	 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2291	 * pre-shared for encryption (open/shared/wpa), is key set before
2292	 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2293	 */
2294	if (params->privacy) {
2295		auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2296		alg = RNDIS_WLAN_ALG_WEP;
2297	} else {
2298		auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2299		alg = RNDIS_WLAN_ALG_NONE;
2300	}
2301
2302	netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2303		   params->ssid, params->bssid, chan, params->privacy);
2304
2305	if (is_associated(usbdev))
2306		disassociate(usbdev, false);
2307
2308	ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2309	if (ret < 0) {
2310		netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2311			   ret);
2312		goto err_turn_radio_on;
2313	}
2314
2315	ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2316	if (ret < 0) {
2317		netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2318			   ret);
2319		goto err_turn_radio_on;
2320	}
2321
2322	set_priv_filter(usbdev);
2323
2324	ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2325	if (ret < 0) {
2326		netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2327			   ret);
2328		goto err_turn_radio_on;
2329	}
2330
2331	if (channel) {
2332		ret = set_channel(usbdev, chan);
2333		if (ret < 0) {
2334			netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2335				   ret);
2336			goto err_turn_radio_on;
2337		}
2338	}
2339
2340	if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2341				!is_broadcast_ether_addr(params->bssid)) {
2342		ret = set_bssid(usbdev, params->bssid);
2343		if (ret < 0) {
2344			netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2345				   ret);
2346			goto err_turn_radio_on;
2347		}
2348	} else
2349		clear_bssid(usbdev);
2350
2351	length = params->ssid_len;
2352	if (length > NDIS_802_11_LENGTH_SSID)
2353		length = NDIS_802_11_LENGTH_SSID;
2354
2355	memset(&ssid, 0, sizeof(ssid));
2356	ssid.length = cpu_to_le32(length);
2357	memcpy(ssid.essid, params->ssid, length);
2358
2359	/* Don't need to pause rx queue for ad-hoc. */
2360	usbnet_purge_paused_rxq(usbdev);
2361	usbnet_resume_rx(usbdev);
2362
2363	ret = set_essid(usbdev, &ssid);
2364	if (ret < 0)
2365		netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2366			   ret);
2367	return ret;
2368
2369err_turn_radio_on:
2370	disassociate(usbdev, true);
2371
2372	return ret;
2373}
2374
2375static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2376{
2377	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2378	struct usbnet *usbdev = priv->usbdev;
2379
2380	netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2381
2382	priv->connected = false;
2383	eth_zero_addr(priv->bssid);
2384
2385	return deauthenticate(usbdev);
2386}
2387
2388static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2389			 u8 key_index, bool pairwise, const u8 *mac_addr,
2390			 struct key_params *params)
2391{
2392	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2393	struct usbnet *usbdev = priv->usbdev;
2394	__le32 flags;
2395
2396	netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2397		   __func__, key_index, mac_addr, params->cipher);
2398
2399	switch (params->cipher) {
2400	case WLAN_CIPHER_SUITE_WEP40:
2401	case WLAN_CIPHER_SUITE_WEP104:
2402		return add_wep_key(usbdev, params->key, params->key_len,
2403								key_index);
2404	case WLAN_CIPHER_SUITE_TKIP:
2405	case WLAN_CIPHER_SUITE_CCMP:
2406		flags = 0;
2407
2408		if (params->seq && params->seq_len > 0)
2409			flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2410		if (mac_addr)
2411			flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2412					NDIS_80211_ADDKEY_TRANSMIT_KEY;
2413
2414		return add_wpa_key(usbdev, params->key, params->key_len,
2415				key_index, mac_addr, params->seq,
2416				params->seq_len, params->cipher, flags);
2417	default:
2418		netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2419			   __func__, params->cipher);
2420		return -ENOTSUPP;
2421	}
2422}
2423
2424static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2425			 u8 key_index, bool pairwise, const u8 *mac_addr)
2426{
2427	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2428	struct usbnet *usbdev = priv->usbdev;
2429
2430	netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2431
2432	return remove_key(usbdev, key_index, mac_addr);
2433}
2434
2435static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2436				 u8 key_index, bool unicast, bool multicast)
2437{
2438	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2439	struct usbnet *usbdev = priv->usbdev;
2440	struct rndis_wlan_encr_key key;
2441
2442	netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2443
2444	if (key_index >= RNDIS_WLAN_NUM_KEYS)
2445		return -ENOENT;
2446
2447	priv->encr_tx_key_index = key_index;
2448
2449	if (is_wpa_key(priv, key_index))
2450		return 0;
2451
2452	key = priv->encr_keys[key_index];
2453
2454	return add_wep_key(usbdev, key.material, key.len, key_index);
2455}
2456
2457static void rndis_fill_station_info(struct usbnet *usbdev,
2458						struct station_info *sinfo)
2459{
2460	__le32 linkspeed, rssi;
2461	int ret, len;
2462
2463	memset(sinfo, 0, sizeof(*sinfo));
2464
2465	len = sizeof(linkspeed);
2466	ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2467	if (ret == 0) {
2468		sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2469		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2470	}
2471
2472	len = sizeof(rssi);
2473	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2474			      &rssi, &len);
2475	if (ret == 0) {
2476		sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2477		sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2478	}
2479}
2480
2481static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2482			     const u8 *mac, struct station_info *sinfo)
2483{
2484	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2485	struct usbnet *usbdev = priv->usbdev;
2486
2487	if (!ether_addr_equal(priv->bssid, mac))
2488		return -ENOENT;
2489
2490	rndis_fill_station_info(usbdev, sinfo);
2491
2492	return 0;
2493}
2494
2495static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2496			       int idx, u8 *mac, struct station_info *sinfo)
2497{
2498	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2499	struct usbnet *usbdev = priv->usbdev;
2500
2501	if (idx != 0)
2502		return -ENOENT;
2503
2504	memcpy(mac, priv->bssid, ETH_ALEN);
2505
2506	rndis_fill_station_info(usbdev, sinfo);
2507
2508	return 0;
2509}
2510
2511static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2512				struct cfg80211_pmksa *pmksa)
2513{
2514	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2515	struct usbnet *usbdev = priv->usbdev;
2516	struct ndis_80211_pmkid *pmkids;
2517	u32 *tmp = (u32 *)pmksa->pmkid;
2518
2519	netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2520			pmksa->bssid,
2521			cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2522			cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2523
2524	pmkids = get_device_pmkids(usbdev);
2525	if (IS_ERR(pmkids)) {
2526		/* couldn't read PMKID cache from device */
2527		return PTR_ERR(pmkids);
2528	}
2529
2530	pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2531	if (IS_ERR(pmkids)) {
2532		/* not found, list full, etc */
2533		return PTR_ERR(pmkids);
2534	}
2535
2536	return set_device_pmkids(usbdev, pmkids);
2537}
2538
2539static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2540				struct cfg80211_pmksa *pmksa)
2541{
2542	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2543	struct usbnet *usbdev = priv->usbdev;
2544	struct ndis_80211_pmkid *pmkids;
2545	u32 *tmp = (u32 *)pmksa->pmkid;
2546
2547	netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2548			pmksa->bssid,
2549			cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2550			cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2551
2552	pmkids = get_device_pmkids(usbdev);
2553	if (IS_ERR(pmkids)) {
2554		/* Couldn't read PMKID cache from device */
2555		return PTR_ERR(pmkids);
2556	}
2557
2558	pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2559	if (IS_ERR(pmkids)) {
2560		/* not found, etc */
2561		return PTR_ERR(pmkids);
2562	}
2563
2564	return set_device_pmkids(usbdev, pmkids);
2565}
2566
2567static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2568{
2569	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2570	struct usbnet *usbdev = priv->usbdev;
2571	struct ndis_80211_pmkid pmkid;
2572
2573	netdev_dbg(usbdev->net, "%s()\n", __func__);
2574
2575	memset(&pmkid, 0, sizeof(pmkid));
2576
2577	pmkid.length = cpu_to_le32(sizeof(pmkid));
2578	pmkid.bssid_info_count = cpu_to_le32(0);
2579
2580	return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2581			     &pmkid, sizeof(pmkid));
2582}
2583
2584static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2585				bool enabled, int timeout)
2586{
2587	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2588	struct usbnet *usbdev = priv->usbdev;
2589	int power_mode;
2590	__le32 mode;
2591	int ret;
2592
2593	if (priv->device_type != RNDIS_BCM4320B)
2594		return -ENOTSUPP;
2595
2596	netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2597				enabled ? "enabled" : "disabled",
2598				timeout);
2599
2600	if (enabled)
2601		power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2602	else
2603		power_mode = NDIS_80211_POWER_MODE_CAM;
2604
2605	if (power_mode == priv->power_mode)
2606		return 0;
2607
2608	priv->power_mode = power_mode;
2609
2610	mode = cpu_to_le32(power_mode);
2611	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2612			    &mode, sizeof(mode));
2613
2614	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2615				__func__, ret);
2616
2617	return ret;
2618}
2619
2620static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2621					struct net_device *dev,
2622					s32 rssi_thold, u32 rssi_hyst)
2623{
2624	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2625
2626	priv->cqm_rssi_thold = rssi_thold;
2627	priv->cqm_rssi_hyst = rssi_hyst;
2628	priv->last_cqm_event_rssi = 0;
2629
2630	return 0;
2631}
2632
2633static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2634					   struct ndis_80211_assoc_info *info)
2635{
2636	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2637	struct ieee80211_channel *channel;
2638	struct ndis_80211_ssid ssid;
2639	struct cfg80211_bss *bss;
2640	s32 signal;
2641	u64 timestamp;
2642	u16 capability;
2643	u32 beacon_period = 0;
2644	__le32 rssi;
2645	u8 ie_buf[34];
2646	int len, ret, ie_len;
2647
2648	/* Get signal quality, in case of error use rssi=0 and ignore error. */
2649	len = sizeof(rssi);
2650	rssi = 0;
2651	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2652			      &rssi, &len);
2653	signal = level_to_qual(le32_to_cpu(rssi));
2654
2655	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2656		   "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2657		   level_to_qual(le32_to_cpu(rssi)));
2658
2659	/* Get AP capabilities */
2660	if (info) {
2661		capability = le16_to_cpu(info->resp_ie.capa);
2662	} else {
2663		/* Set atleast ESS/IBSS capability */
2664		capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2665				WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2666	}
2667
2668	/* Get channel and beacon interval */
2669	channel = get_current_channel(usbdev, &beacon_period);
2670	if (!channel) {
2671		netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2672					__func__);
2673		return;
2674	}
2675
2676	/* Get SSID, in case of error, use zero length SSID and ignore error. */
2677	len = sizeof(ssid);
2678	memset(&ssid, 0, sizeof(ssid));
2679	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2680			      &ssid, &len);
2681	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2682				"'%.32s'\n", __func__, ret,
2683				le32_to_cpu(ssid.length), ssid.essid);
2684
2685	if (le32_to_cpu(ssid.length) > 32)
2686		ssid.length = cpu_to_le32(32);
2687
2688	ie_buf[0] = WLAN_EID_SSID;
2689	ie_buf[1] = le32_to_cpu(ssid.length);
2690	memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2691
2692	ie_len = le32_to_cpu(ssid.length) + 2;
2693
2694	/* no tsf */
2695	timestamp = 0;
2696
2697	netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2698		"capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2699		"signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2700		bssid, (u32)timestamp, capability, beacon_period, ie_len,
2701		ssid.essid, signal);
2702
2703	bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2704				  CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2705				  timestamp, capability, beacon_period,
2706				  ie_buf, ie_len, signal, GFP_KERNEL);
2707	cfg80211_put_bss(priv->wdev.wiphy, bss);
2708}
2709
2710/*
2711 * workers, indication handlers, device poller
2712 */
2713static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2714{
2715	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2716	struct ndis_80211_assoc_info *info = NULL;
2717	u8 bssid[ETH_ALEN];
2718	unsigned int resp_ie_len, req_ie_len;
2719	unsigned int offset;
2720	u8 *req_ie, *resp_ie;
2721	int ret;
2722	bool roamed = false;
2723	bool match_bss;
2724
2725	if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2726		/* received media connect indication while connected, either
2727		 * device reassociated with same AP or roamed to new. */
2728		roamed = true;
2729	}
2730
2731	req_ie_len = 0;
2732	resp_ie_len = 0;
2733	req_ie = NULL;
2734	resp_ie = NULL;
2735
2736	if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2737		info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2738		if (!info) {
2739			/* No memory? Try resume work later */
2740			set_bit(WORK_LINK_UP, &priv->work_pending);
2741			queue_work(priv->workqueue, &priv->work);
2742			return;
2743		}
2744
2745		/* Get association info IEs from device. */
2746		ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2747		if (!ret) {
2748			req_ie_len = le32_to_cpu(info->req_ie_length);
2749			if (req_ie_len > CONTROL_BUFFER_SIZE)
2750				req_ie_len = CONTROL_BUFFER_SIZE;
2751			if (req_ie_len != 0) {
2752				offset = le32_to_cpu(info->offset_req_ies);
2753
2754				if (offset > CONTROL_BUFFER_SIZE)
2755					offset = CONTROL_BUFFER_SIZE;
2756
2757				req_ie = (u8 *)info + offset;
2758
2759				if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2760					req_ie_len =
2761						CONTROL_BUFFER_SIZE - offset;
2762			}
2763
2764			resp_ie_len = le32_to_cpu(info->resp_ie_length);
2765			if (resp_ie_len > CONTROL_BUFFER_SIZE)
2766				resp_ie_len = CONTROL_BUFFER_SIZE;
2767			if (resp_ie_len != 0) {
2768				offset = le32_to_cpu(info->offset_resp_ies);
2769
2770				if (offset > CONTROL_BUFFER_SIZE)
2771					offset = CONTROL_BUFFER_SIZE;
2772
2773				resp_ie = (u8 *)info + offset;
2774
2775				if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2776					resp_ie_len =
2777						CONTROL_BUFFER_SIZE - offset;
2778			}
2779		} else {
2780			/* Since rndis_wlan_craft_connected_bss() might use info
2781			 * later and expects info to contain valid data if
2782			 * non-null, free info and set NULL here.
2783			 */
2784			kfree(info);
2785			info = NULL;
2786		}
2787	} else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2788		return;
2789
2790	ret = get_bssid(usbdev, bssid);
2791	if (ret < 0)
2792		memset(bssid, 0, sizeof(bssid));
2793
2794	netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2795		   bssid, roamed ? " roamed" : "");
2796
2797	/* Internal bss list in device should contain at least the currently
2798	 * connected bss and we can get it to cfg80211 with
2799	 * rndis_check_bssid_list().
2800	 *
2801	 * NDIS spec says: "If the device is associated, but the associated
2802	 *  BSSID is not in its BSSID scan list, then the driver must add an
2803	 *  entry for the BSSID at the end of the data that it returns in
2804	 *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2805	 *
2806	 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2807	 */
2808	match_bss = false;
2809	rndis_check_bssid_list(usbdev, bssid, &match_bss);
2810
2811	if (!is_zero_ether_addr(bssid) && !match_bss) {
2812		/* Couldn't get bss from device, we need to manually craft bss
2813		 * for cfg80211.
2814		 */
2815		rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2816	}
2817
2818	if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2819		if (!roamed) {
2820			cfg80211_connect_result(usbdev->net, bssid, req_ie,
2821						req_ie_len, resp_ie,
2822						resp_ie_len, 0, GFP_KERNEL);
2823		} else {
2824			struct cfg80211_roam_info roam_info = {
2825				.channel = get_current_channel(usbdev, NULL),
2826				.bssid = bssid,
2827				.req_ie = req_ie,
2828				.req_ie_len = req_ie_len,
2829				.resp_ie = resp_ie,
2830				.resp_ie_len = resp_ie_len,
2831			};
2832
2833			cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2834		}
2835	} else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2836		cfg80211_ibss_joined(usbdev->net, bssid,
2837				     get_current_channel(usbdev, NULL),
2838				     GFP_KERNEL);
2839
2840	kfree(info);
2841
2842	priv->connected = true;
2843	memcpy(priv->bssid, bssid, ETH_ALEN);
2844
2845	usbnet_resume_rx(usbdev);
2846	netif_carrier_on(usbdev->net);
2847}
2848
2849static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2850{
2851	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2852
2853	if (priv->connected) {
2854		priv->connected = false;
2855		eth_zero_addr(priv->bssid);
2856
2857		deauthenticate(usbdev);
2858
2859		cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2860	}
2861
2862	netif_carrier_off(usbdev->net);
2863}
2864
2865static void rndis_wlan_worker(struct work_struct *work)
2866{
2867	struct rndis_wlan_private *priv =
2868		container_of(work, struct rndis_wlan_private, work);
2869	struct usbnet *usbdev = priv->usbdev;
2870
2871	if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2872		rndis_wlan_do_link_up_work(usbdev);
2873
2874	if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2875		rndis_wlan_do_link_down_work(usbdev);
2876
2877	if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2878		set_multicast_list(usbdev);
2879}
2880
2881static void rndis_wlan_set_multicast_list(struct net_device *dev)
2882{
2883	struct usbnet *usbdev = netdev_priv(dev);
2884	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2885
2886	if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2887		return;
2888
2889	set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2890	queue_work(priv->workqueue, &priv->work);
2891}
2892
2893static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2894				struct ndis_80211_status_indication *indication,
2895				int len)
2896{
2897	u8 *buf;
2898	const char *type;
2899	int flags, buflen, key_id;
2900	bool pairwise_error, group_error;
2901	struct ndis_80211_auth_request *auth_req;
2902	enum nl80211_key_type key_type;
2903
2904	/* must have at least one array entry */
2905	if (len < offsetof(struct ndis_80211_status_indication, u) +
2906				sizeof(struct ndis_80211_auth_request)) {
2907		netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2908			    len);
2909		return;
2910	}
2911
2912	buf = (void *)&indication->u.auth_request[0];
2913	buflen = len - offsetof(struct ndis_80211_status_indication, u);
2914
2915	while (buflen >= sizeof(*auth_req)) {
2916		auth_req = (void *)buf;
2917		if (buflen < le32_to_cpu(auth_req->length))
2918			return;
2919		type = "unknown";
2920		flags = le32_to_cpu(auth_req->flags);
2921		pairwise_error = false;
2922		group_error = false;
2923
2924		if (flags & 0x1)
2925			type = "reauth request";
2926		if (flags & 0x2)
2927			type = "key update request";
2928		if (flags & 0x6) {
2929			pairwise_error = true;
2930			type = "pairwise_error";
2931		}
2932		if (flags & 0xe) {
2933			group_error = true;
2934			type = "group_error";
2935		}
2936
2937		netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2938			    type, le32_to_cpu(auth_req->flags));
2939
2940		if (pairwise_error) {
2941			key_type = NL80211_KEYTYPE_PAIRWISE;
2942			key_id = -1;
2943
2944			cfg80211_michael_mic_failure(usbdev->net,
2945							auth_req->bssid,
2946							key_type, key_id, NULL,
2947							GFP_KERNEL);
2948		}
2949
2950		if (group_error) {
2951			key_type = NL80211_KEYTYPE_GROUP;
2952			key_id = -1;
2953
2954			cfg80211_michael_mic_failure(usbdev->net,
2955							auth_req->bssid,
2956							key_type, key_id, NULL,
2957							GFP_KERNEL);
2958		}
2959
2960		buflen -= le32_to_cpu(auth_req->length);
2961		buf += le32_to_cpu(auth_req->length);
2962	}
2963}
2964
2965static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2966				struct ndis_80211_status_indication *indication,
2967				int len)
2968{
2969	struct ndis_80211_pmkid_cand_list *cand_list;
2970	int list_len, expected_len, i;
2971
2972	if (len < offsetof(struct ndis_80211_status_indication, u) +
2973				sizeof(struct ndis_80211_pmkid_cand_list)) {
2974		netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2975			    len);
2976		return;
2977	}
2978
2979	list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2980			sizeof(struct ndis_80211_pmkid_candidate);
2981	expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2982			offsetof(struct ndis_80211_status_indication, u);
2983
2984	if (len < expected_len) {
2985		netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2986			    len, expected_len);
2987		return;
2988	}
2989
2990	cand_list = &indication->u.cand_list;
2991
2992	netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2993		    le32_to_cpu(cand_list->version),
2994		    le32_to_cpu(cand_list->num_candidates));
2995
2996	if (le32_to_cpu(cand_list->version) != 1)
2997		return;
2998
2999	for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3000		struct ndis_80211_pmkid_candidate *cand =
3001						&cand_list->candidate_list[i];
3002		bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3003
3004		netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3005			   i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3006
3007		cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3008						preauth, GFP_ATOMIC);
3009	}
3010}
3011
3012static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3013			struct rndis_indicate *msg, int buflen)
3014{
3015	struct ndis_80211_status_indication *indication;
3016	unsigned int len, offset;
3017
3018	offset = offsetof(struct rndis_indicate, status) +
3019			le32_to_cpu(msg->offset);
3020	len = le32_to_cpu(msg->length);
3021
3022	if (len < 8) {
3023		netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3024			    len);
3025		return;
3026	}
3027
3028	if (len > buflen || offset > buflen || offset + len > buflen) {
3029		netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3030			    offset + len, buflen);
3031		return;
3032	}
3033
3034	indication = (void *)((u8 *)msg + offset);
3035
3036	switch (le32_to_cpu(indication->status_type)) {
3037	case NDIS_80211_STATUSTYPE_RADIOSTATE:
3038		netdev_info(usbdev->net, "radio state indication: %i\n",
3039			    le32_to_cpu(indication->u.radio_status));
3040		return;
3041
3042	case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3043		netdev_info(usbdev->net, "media stream mode indication: %i\n",
3044			    le32_to_cpu(indication->u.media_stream_mode));
3045		return;
3046
3047	case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3048		rndis_wlan_auth_indication(usbdev, indication, len);
3049		return;
3050
3051	case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3052		rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3053		return;
3054
3055	default:
3056		netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3057			    le32_to_cpu(indication->status_type));
3058	}
3059}
3060
3061static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3062{
3063	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3064	struct rndis_indicate *msg = ind;
3065
3066	switch (le32_to_cpu(msg->status)) {
3067	case RNDIS_STATUS_MEDIA_CONNECT:
3068		if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3069			/* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3070			 * "media connect" indications which confuses driver
3071			 * and userspace to think that device is
3072			 * roaming/reassociating when it isn't.
3073			 */
3074			netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3075			return;
3076		}
3077
3078		usbnet_pause_rx(usbdev);
3079
3080		netdev_info(usbdev->net, "media connect\n");
3081
3082		/* queue work to avoid recursive calls into rndis_command */
3083		set_bit(WORK_LINK_UP, &priv->work_pending);
3084		queue_work(priv->workqueue, &priv->work);
3085		break;
3086
3087	case RNDIS_STATUS_MEDIA_DISCONNECT:
3088		netdev_info(usbdev->net, "media disconnect\n");
3089
3090		/* queue work to avoid recursive calls into rndis_command */
3091		set_bit(WORK_LINK_DOWN, &priv->work_pending);
3092		queue_work(priv->workqueue, &priv->work);
3093		break;
3094
3095	case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3096		rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3097		break;
3098
3099	default:
3100		netdev_info(usbdev->net, "indication: 0x%08x\n",
3101			    le32_to_cpu(msg->status));
3102		break;
3103	}
3104}
3105
3106static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3107{
3108	struct {
3109		__le32	num_items;
3110		__le32	items[8];
3111	} networks_supported;
3112	struct ndis_80211_capability *caps;
3113	u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3114	int len, retval, i, n;
3115	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3116
3117	/* determine supported modes */
3118	len = sizeof(networks_supported);
3119	retval = rndis_query_oid(usbdev,
3120				 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3121				 &networks_supported, &len);
3122	if (retval >= 0) {
3123		n = le32_to_cpu(networks_supported.num_items);
3124		if (n > 8)
3125			n = 8;
3126		for (i = 0; i < n; i++) {
3127			switch (le32_to_cpu(networks_supported.items[i])) {
3128			case NDIS_80211_TYPE_FREQ_HOP:
3129			case NDIS_80211_TYPE_DIRECT_SEQ:
3130				priv->caps |= CAP_MODE_80211B;
3131				break;
3132			case NDIS_80211_TYPE_OFDM_A:
3133				priv->caps |= CAP_MODE_80211A;
3134				break;
3135			case NDIS_80211_TYPE_OFDM_G:
3136				priv->caps |= CAP_MODE_80211G;
3137				break;
3138			}
3139		}
3140	}
3141
3142	/* get device 802.11 capabilities, number of PMKIDs */
3143	caps = (struct ndis_80211_capability *)caps_buf;
3144	len = sizeof(caps_buf);
3145	retval = rndis_query_oid(usbdev,
3146				 RNDIS_OID_802_11_CAPABILITY,
3147				 caps, &len);
3148	if (retval >= 0) {
3149		netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3150				"ver %d, pmkids %d, auth-encr-pairs %d\n",
3151				le32_to_cpu(caps->length),
3152				le32_to_cpu(caps->version),
3153				le32_to_cpu(caps->num_pmkids),
3154				le32_to_cpu(caps->num_auth_encr_pair));
3155		wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3156	} else
3157		wiphy->max_num_pmkids = 0;
3158
3159	return retval;
3160}
3161
3162static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3163{
3164	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3165	enum nl80211_cqm_rssi_threshold_event event;
3166	int thold, hyst, last_event;
3167
3168	if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3169		return;
3170	if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3171		return;
3172
3173	last_event = priv->last_cqm_event_rssi;
3174	thold = priv->cqm_rssi_thold;
3175	hyst = priv->cqm_rssi_hyst;
3176
3177	if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3178		event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3179	else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3180		event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3181	else
3182		return;
3183
3184	priv->last_cqm_event_rssi = rssi;
3185	cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3186}
3187
3188#define DEVICE_POLLER_JIFFIES (HZ)
3189static void rndis_device_poller(struct work_struct *work)
3190{
3191	struct rndis_wlan_private *priv =
3192		container_of(work, struct rndis_wlan_private,
3193							dev_poller_work.work);
3194	struct usbnet *usbdev = priv->usbdev;
3195	__le32 rssi, tmp;
3196	int len, ret, j;
3197	int update_jiffies = DEVICE_POLLER_JIFFIES;
3198	void *buf;
3199
3200	/* Only check/do workaround when connected. Calling is_associated()
3201	 * also polls device with rndis_command() and catches for media link
3202	 * indications.
3203	 */
3204	if (!is_associated(usbdev)) {
3205		/* Workaround bad scanning in BCM4320a devices with active
3206		 * background scanning when not associated.
3207		 */
3208		if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3209		    !priv->scan_request) {
3210			/* Get previous scan results */
3211			rndis_check_bssid_list(usbdev, NULL, NULL);
3212
3213			/* Initiate new scan */
3214			rndis_start_bssid_list_scan(usbdev);
3215		}
3216
3217		goto end;
3218	}
3219
3220	len = sizeof(rssi);
3221	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3222			      &rssi, &len);
3223	if (ret == 0) {
3224		priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3225		rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3226	}
3227
3228	netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3229		   ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3230
3231	/* Workaround transfer stalls on poor quality links.
3232	 * TODO: find right way to fix these stalls (as stalls do not happen
3233	 * with ndiswrapper/windows driver). */
3234	if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3235		/* Decrease stats worker interval to catch stalls.
3236		 * faster. Faster than 400-500ms causes packet loss,
3237		 * Slower doesn't catch stalls fast enough.
3238		 */
3239		j = msecs_to_jiffies(priv->param_workaround_interval);
3240		if (j > DEVICE_POLLER_JIFFIES)
3241			j = DEVICE_POLLER_JIFFIES;
3242		else if (j <= 0)
3243			j = 1;
3244		update_jiffies = j;
3245
3246		/* Send scan OID. Use of both OIDs is required to get device
3247		 * working.
3248		 */
3249		tmp = cpu_to_le32(1);
3250		rndis_set_oid(usbdev,
3251			      RNDIS_OID_802_11_BSSID_LIST_SCAN,
3252			      &tmp, sizeof(tmp));
3253
3254		len = CONTROL_BUFFER_SIZE;
3255		buf = kmalloc(len, GFP_KERNEL);
3256		if (!buf)
3257			goto end;
3258
3259		rndis_query_oid(usbdev,
3260				RNDIS_OID_802_11_BSSID_LIST,
3261				buf, &len);
3262		kfree(buf);
3263	}
3264
3265end:
3266	if (update_jiffies >= HZ)
3267		update_jiffies = round_jiffies_relative(update_jiffies);
3268	else {
3269		j = round_jiffies_relative(update_jiffies);
3270		if (abs(j - update_jiffies) <= 10)
3271			update_jiffies = j;
3272	}
3273
3274	queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3275								update_jiffies);
3276}
3277
3278/*
3279 * driver/device initialization
3280 */
3281static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3282{
3283	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3284
3285	priv->device_type = device_type;
3286
3287	priv->param_country[0] = modparam_country[0];
3288	priv->param_country[1] = modparam_country[1];
3289	priv->param_country[2] = 0;
3290	priv->param_frameburst   = modparam_frameburst;
3291	priv->param_afterburner  = modparam_afterburner;
3292	priv->param_power_save   = modparam_power_save;
3293	priv->param_power_output = modparam_power_output;
3294	priv->param_roamtrigger  = modparam_roamtrigger;
3295	priv->param_roamdelta    = modparam_roamdelta;
3296
3297	priv->param_country[0] = toupper(priv->param_country[0]);
3298	priv->param_country[1] = toupper(priv->param_country[1]);
3299	/* doesn't support EU as country code, use FI instead */
3300	if (!strcmp(priv->param_country, "EU"))
3301		strcpy(priv->param_country, "FI");
3302
3303	if (priv->param_power_save < 0)
3304		priv->param_power_save = 0;
3305	else if (priv->param_power_save > 2)
3306		priv->param_power_save = 2;
3307
3308	if (priv->param_power_output < 0)
3309		priv->param_power_output = 0;
3310	else if (priv->param_power_output > 3)
3311		priv->param_power_output = 3;
3312
3313	if (priv->param_roamtrigger < -80)
3314		priv->param_roamtrigger = -80;
3315	else if (priv->param_roamtrigger > -60)
3316		priv->param_roamtrigger = -60;
3317
3318	if (priv->param_roamdelta < 0)
3319		priv->param_roamdelta = 0;
3320	else if (priv->param_roamdelta > 2)
3321		priv->param_roamdelta = 2;
3322
3323	if (modparam_workaround_interval < 0)
3324		priv->param_workaround_interval = 500;
3325	else
3326		priv->param_workaround_interval = modparam_workaround_interval;
3327}
3328
3329static int unknown_early_init(struct usbnet *usbdev)
3330{
3331	/* copy module parameters for unknown so that iwconfig reports txpower
3332	 * and workaround parameter is copied to private structure correctly.
3333	 */
3334	rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3335
3336	/* This is unknown device, so do not try set configuration parameters.
3337	 */
3338
3339	return 0;
3340}
3341
3342static int bcm4320a_early_init(struct usbnet *usbdev)
3343{
3344	/* copy module parameters for bcm4320a so that iwconfig reports txpower
3345	 * and workaround parameter is copied to private structure correctly.
3346	 */
3347	rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3348
3349	/* bcm4320a doesn't handle configuration parameters well. Try
3350	 * set any and you get partially zeroed mac and broken device.
3351	 */
3352
3353	return 0;
3354}
3355
3356static int bcm4320b_early_init(struct usbnet *usbdev)
3357{
3358	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3359	char buf[8];
3360
3361	rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3362
3363	/* Early initialization settings, setting these won't have effect
3364	 * if called after generic_rndis_bind().
3365	 */
3366
3367	rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3368	rndis_set_config_parameter_str(usbdev, "FrameBursting",
3369					priv->param_frameburst ? "1" : "0");
3370	rndis_set_config_parameter_str(usbdev, "Afterburner",
3371					priv->param_afterburner ? "1" : "0");
3372	sprintf(buf, "%d", priv->param_power_save);
3373	rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3374	sprintf(buf, "%d", priv->param_power_output);
3375	rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3376	sprintf(buf, "%d", priv->param_roamtrigger);
3377	rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3378	sprintf(buf, "%d", priv->param_roamdelta);
3379	rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3380
3381	return 0;
3382}
3383
3384/* same as rndis_netdev_ops but with local multicast handler */
3385static const struct net_device_ops rndis_wlan_netdev_ops = {
3386	.ndo_open		= usbnet_open,
3387	.ndo_stop		= usbnet_stop,
3388	.ndo_start_xmit		= usbnet_start_xmit,
3389	.ndo_tx_timeout		= usbnet_tx_timeout,
3390	.ndo_get_stats64	= usbnet_get_stats64,
3391	.ndo_set_mac_address 	= eth_mac_addr,
3392	.ndo_validate_addr	= eth_validate_addr,
3393	.ndo_set_rx_mode	= rndis_wlan_set_multicast_list,
3394};
3395
3396static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3397{
3398	struct wiphy *wiphy;
3399	struct rndis_wlan_private *priv;
3400	int retval, len;
3401	__le32 tmp;
3402
3403	/* allocate wiphy and rndis private data
3404	 * NOTE: We only support a single virtual interface, so wiphy
3405	 * and wireless_dev are somewhat synonymous for this device.
3406	 */
3407	wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3408	if (!wiphy)
3409		return -ENOMEM;
3410
3411	priv = wiphy_priv(wiphy);
3412	usbdev->net->ieee80211_ptr = &priv->wdev;
3413	priv->wdev.wiphy = wiphy;
3414	priv->wdev.iftype = NL80211_IFTYPE_STATION;
3415
3416	/* These have to be initialized before calling generic_rndis_bind().
3417	 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3418	 */
3419	usbdev->driver_priv = priv;
3420	priv->usbdev = usbdev;
3421
3422	mutex_init(&priv->command_lock);
3423
3424	/* because rndis_command() sleeps we need to use workqueue */
3425	priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3426	if (!priv->workqueue) {
3427		wiphy_free(wiphy);
3428		return -ENOMEM;
3429	}
3430	INIT_WORK(&priv->work, rndis_wlan_worker);
3431	INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3432	INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3433
3434	/* try bind rndis_host */
3435	retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3436	if (retval < 0)
3437		goto fail;
3438
3439	/* generic_rndis_bind set packet filter to multicast_all+
3440	 * promisc mode which doesn't work well for our devices (device
3441	 * picks up rssi to closest station instead of to access point).
3442	 *
3443	 * rndis_host wants to avoid all OID as much as possible
3444	 * so do promisc/multicast handling in rndis_wlan.
3445	 */
3446	usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3447
3448	tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3449	retval = rndis_set_oid(usbdev,
3450			       RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3451			       &tmp, sizeof(tmp));
3452
3453	len = sizeof(tmp);
3454	retval = rndis_query_oid(usbdev,
3455				 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3456				 &tmp, &len);
3457	priv->multicast_size = le32_to_cpu(tmp);
3458	if (retval < 0 || priv->multicast_size < 0)
3459		priv->multicast_size = 0;
3460	if (priv->multicast_size > 0)
3461		usbdev->net->flags |= IFF_MULTICAST;
3462	else
3463		usbdev->net->flags &= ~IFF_MULTICAST;
3464
3465	/* fill-out wiphy structure and register w/ cfg80211 */
3466	memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3467	wiphy->privid = rndis_wiphy_privid;
3468	wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3469					| BIT(NL80211_IFTYPE_ADHOC);
3470	wiphy->max_scan_ssids = 1;
3471
3472	/* TODO: fill-out band/encr information based on priv->caps */
3473	rndis_wlan_get_caps(usbdev, wiphy);
3474
3475	memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3476	memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3477	priv->band.channels = priv->channels;
3478	priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3479	priv->band.bitrates = priv->rates;
3480	priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3481	wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3482	wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3483
3484	memcpy(priv->cipher_suites, rndis_cipher_suites,
3485						sizeof(rndis_cipher_suites));
3486	wiphy->cipher_suites = priv->cipher_suites;
3487	wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3488
3489	set_wiphy_dev(wiphy, &usbdev->udev->dev);
3490
3491	if (wiphy_register(wiphy)) {
3492		retval = -ENODEV;
3493		goto fail;
3494	}
3495
3496	set_default_iw_params(usbdev);
3497
3498	priv->power_mode = -1;
3499
3500	/* set default rts/frag */
3501	rndis_set_wiphy_params(wiphy,
3502			WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3503
3504	/* turn radio off on init */
3505	priv->radio_on = false;
3506	disassociate(usbdev, false);
3507	netif_carrier_off(usbdev->net);
3508
3509	return 0;
3510
3511fail:
3512	cancel_delayed_work_sync(&priv->dev_poller_work);
3513	cancel_delayed_work_sync(&priv->scan_work);
3514	cancel_work_sync(&priv->work);
3515	flush_workqueue(priv->workqueue);
3516	destroy_workqueue(priv->workqueue);
3517
3518	wiphy_free(wiphy);
3519	return retval;
3520}
3521
3522static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3523{
3524	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3525
3526	/* turn radio off */
3527	disassociate(usbdev, false);
3528
3529	cancel_delayed_work_sync(&priv->dev_poller_work);
3530	cancel_delayed_work_sync(&priv->scan_work);
3531	cancel_work_sync(&priv->work);
3532	flush_workqueue(priv->workqueue);
3533	destroy_workqueue(priv->workqueue);
3534
3535	rndis_unbind(usbdev, intf);
3536
3537	wiphy_unregister(priv->wdev.wiphy);
3538	wiphy_free(priv->wdev.wiphy);
3539}
3540
3541static int rndis_wlan_reset(struct usbnet *usbdev)
3542{
3543	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3544	int retval;
3545
3546	netdev_dbg(usbdev->net, "%s()\n", __func__);
3547
3548	retval = rndis_reset(usbdev);
3549	if (retval)
3550		netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3551
3552	/* rndis_reset cleared multicast list, so restore here.
3553	   (set_multicast_list() also turns on current packet filter) */
3554	set_multicast_list(usbdev);
3555
3556	queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3557		round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3558
3559	return deauthenticate(usbdev);
3560}
3561
3562static int rndis_wlan_stop(struct usbnet *usbdev)
3563{
3564	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3565	int retval;
3566	__le32 filter;
3567
3568	netdev_dbg(usbdev->net, "%s()\n", __func__);
3569
3570	retval = disassociate(usbdev, false);
3571
3572	priv->work_pending = 0;
3573	cancel_delayed_work_sync(&priv->dev_poller_work);
3574	cancel_delayed_work_sync(&priv->scan_work);
3575	cancel_work_sync(&priv->work);
3576	flush_workqueue(priv->workqueue);
3577
3578	if (priv->scan_request) {
3579		struct cfg80211_scan_info info = {
3580			.aborted = true,
3581		};
3582
3583		cfg80211_scan_done(priv->scan_request, &info);
3584		priv->scan_request = NULL;
3585	}
3586
3587	/* Set current packet filter zero to block receiving data packets from
3588	   device. */
3589	filter = 0;
3590	rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3591								sizeof(filter));
3592
3593	return retval;
3594}
3595
3596static const struct driver_info	bcm4320b_info = {
3597	.description =	"Wireless RNDIS device, BCM4320b based",
3598	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3599				FLAG_AVOID_UNLINK_URBS,
3600	.bind =		rndis_wlan_bind,
3601	.unbind =	rndis_wlan_unbind,
3602	.status =	rndis_status,
3603	.rx_fixup =	rndis_rx_fixup,
3604	.tx_fixup =	rndis_tx_fixup,
3605	.reset =	rndis_wlan_reset,
3606	.stop =		rndis_wlan_stop,
3607	.early_init =	bcm4320b_early_init,
3608	.indication =	rndis_wlan_indication,
3609};
3610
3611static const struct driver_info	bcm4320a_info = {
3612	.description =	"Wireless RNDIS device, BCM4320a based",
3613	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3614				FLAG_AVOID_UNLINK_URBS,
3615	.bind =		rndis_wlan_bind,
3616	.unbind =	rndis_wlan_unbind,
3617	.status =	rndis_status,
3618	.rx_fixup =	rndis_rx_fixup,
3619	.tx_fixup =	rndis_tx_fixup,
3620	.reset =	rndis_wlan_reset,
3621	.stop =		rndis_wlan_stop,
3622	.early_init =	bcm4320a_early_init,
3623	.indication =	rndis_wlan_indication,
3624};
3625
3626static const struct driver_info rndis_wlan_info = {
3627	.description =	"Wireless RNDIS device",
3628	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3629				FLAG_AVOID_UNLINK_URBS,
3630	.bind =		rndis_wlan_bind,
3631	.unbind =	rndis_wlan_unbind,
3632	.status =	rndis_status,
3633	.rx_fixup =	rndis_rx_fixup,
3634	.tx_fixup =	rndis_tx_fixup,
3635	.reset =	rndis_wlan_reset,
3636	.stop =		rndis_wlan_stop,
3637	.early_init =	unknown_early_init,
3638	.indication =	rndis_wlan_indication,
3639};
3640
3641/*-------------------------------------------------------------------------*/
3642
3643static const struct usb_device_id products [] = {
3644#define	RNDIS_MASTER_INTERFACE \
3645	.bInterfaceClass	= USB_CLASS_COMM, \
3646	.bInterfaceSubClass	= 2 /* ACM */, \
3647	.bInterfaceProtocol	= 0x0ff
3648
3649/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3650 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3651 */
3652{
3653	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3654			  | USB_DEVICE_ID_MATCH_DEVICE,
3655	.idVendor		= 0x0411,
3656	.idProduct		= 0x00bc,	/* Buffalo WLI-U2-KG125S */
3657	RNDIS_MASTER_INTERFACE,
3658	.driver_info		= (unsigned long) &bcm4320b_info,
3659}, {
3660	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3661			  | USB_DEVICE_ID_MATCH_DEVICE,
3662	.idVendor		= 0x0baf,
3663	.idProduct		= 0x011b,	/* U.S. Robotics USR5421 */
3664	RNDIS_MASTER_INTERFACE,
3665	.driver_info		= (unsigned long) &bcm4320b_info,
3666}, {
3667	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3668			  | USB_DEVICE_ID_MATCH_DEVICE,
3669	.idVendor		= 0x050d,
3670	.idProduct		= 0x011b,	/* Belkin F5D7051 */
3671	RNDIS_MASTER_INTERFACE,
3672	.driver_info		= (unsigned long) &bcm4320b_info,
3673}, {
3674	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3675			  | USB_DEVICE_ID_MATCH_DEVICE,
3676	.idVendor		= 0x1799,	/* Belkin has two vendor ids */
3677	.idProduct		= 0x011b,	/* Belkin F5D7051 */
3678	RNDIS_MASTER_INTERFACE,
3679	.driver_info		= (unsigned long) &bcm4320b_info,
3680}, {
3681	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3682			  | USB_DEVICE_ID_MATCH_DEVICE,
3683	.idVendor		= 0x13b1,
3684	.idProduct		= 0x0014,	/* Linksys WUSB54GSv2 */
3685	RNDIS_MASTER_INTERFACE,
3686	.driver_info		= (unsigned long) &bcm4320b_info,
3687}, {
3688	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3689			  | USB_DEVICE_ID_MATCH_DEVICE,
3690	.idVendor		= 0x13b1,
3691	.idProduct		= 0x0026,	/* Linksys WUSB54GSC */
3692	RNDIS_MASTER_INTERFACE,
3693	.driver_info		= (unsigned long) &bcm4320b_info,
3694}, {
3695	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3696			  | USB_DEVICE_ID_MATCH_DEVICE,
3697	.idVendor		= 0x0b05,
3698	.idProduct		= 0x1717,	/* Asus WL169gE */
3699	RNDIS_MASTER_INTERFACE,
3700	.driver_info		= (unsigned long) &bcm4320b_info,
3701}, {
3702	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3703			  | USB_DEVICE_ID_MATCH_DEVICE,
3704	.idVendor		= 0x0a5c,
3705	.idProduct		= 0xd11b,	/* Eminent EM4045 */
3706	RNDIS_MASTER_INTERFACE,
3707	.driver_info		= (unsigned long) &bcm4320b_info,
3708}, {
3709	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3710			  | USB_DEVICE_ID_MATCH_DEVICE,
3711	.idVendor		= 0x1690,
3712	.idProduct		= 0x0715,	/* BT Voyager 1055 */
3713	RNDIS_MASTER_INTERFACE,
3714	.driver_info		= (unsigned long) &bcm4320b_info,
3715},
3716/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3717 * parameters available, hardware probably contain older firmware version with
3718 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3719 */
3720{
3721	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3722			  | USB_DEVICE_ID_MATCH_DEVICE,
3723	.idVendor		= 0x13b1,
3724	.idProduct		= 0x000e,	/* Linksys WUSB54GSv1 */
3725	RNDIS_MASTER_INTERFACE,
3726	.driver_info		= (unsigned long) &bcm4320a_info,
3727}, {
3728	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3729			  | USB_DEVICE_ID_MATCH_DEVICE,
3730	.idVendor		= 0x0baf,
3731	.idProduct		= 0x0111,	/* U.S. Robotics USR5420 */
3732	RNDIS_MASTER_INTERFACE,
3733	.driver_info		= (unsigned long) &bcm4320a_info,
3734}, {
3735	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3736			  | USB_DEVICE_ID_MATCH_DEVICE,
3737	.idVendor		= 0x0411,
3738	.idProduct		= 0x004b,	/* BUFFALO WLI-USB-G54 */
3739	RNDIS_MASTER_INTERFACE,
3740	.driver_info		= (unsigned long) &bcm4320a_info,
3741},
3742/* Generic Wireless RNDIS devices that we don't have exact
3743 * idVendor/idProduct/chip yet.
3744 */
3745{
3746	/* RNDIS is MSFT's un-official variant of CDC ACM */
3747	USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3748	.driver_info = (unsigned long) &rndis_wlan_info,
3749}, {
3750	/* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3751	USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3752	.driver_info = (unsigned long) &rndis_wlan_info,
3753},
3754	{ },		// END
3755};
3756MODULE_DEVICE_TABLE(usb, products);
3757
3758static struct usb_driver rndis_wlan_driver = {
3759	.name =		"rndis_wlan",
3760	.id_table =	products,
3761	.probe =	usbnet_probe,
3762	.disconnect =	usbnet_disconnect,
3763	.suspend =	usbnet_suspend,
3764	.resume =	usbnet_resume,
3765	.disable_hub_initiated_lpm = 1,
3766};
3767
3768module_usb_driver(rndis_wlan_driver);
3769
3770MODULE_AUTHOR("Bjorge Dijkstra");
3771MODULE_AUTHOR("Jussi Kivilinna");
3772MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3773MODULE_LICENSE("GPL");
3774