1/*
   2 * Driver for RNDIS based wireless USB devices.
   3 *
   4 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
   5 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License as published by
   9 * the Free Software Foundation; either version 2 of the License, or
  10 * (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
  19 *
  20 *  Portions of this file are based on NDISwrapper project,
  21 *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
  22 *  http://ndiswrapper.sourceforge.net/
  23 */
  24
  25// #define	DEBUG			// error path messages, extra info
  26// #define	VERBOSE			// more; success messages
  27
  28#include <linux/module.h>
  29#include <linux/netdevice.h>
  30#include <linux/etherdevice.h>
  31#include <linux/ethtool.h>
  32#include <linux/workqueue.h>
  33#include <linux/mutex.h>
  34#include <linux/mii.h>
  35#include <linux/usb.h>
  36#include <linux/usb/cdc.h>
  37#include <linux/ieee80211.h>
  38#include <linux/if_arp.h>
  39#include <linux/ctype.h>
  40#include <linux/spinlock.h>
  41#include <linux/slab.h>
  42#include <net/cfg80211.h>
  43#include <linux/usb/usbnet.h>
  44#include <linux/usb/rndis_host.h>
  45
  46
  47/* NOTE: All these are settings for Broadcom chipset */
  48static char modparam_country[4] = "EU";
  49module_param_string(country, modparam_country, 4, 0444);
  50MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
  51
  52static int modparam_frameburst = 1;
  53module_param_named(frameburst, modparam_frameburst, int, 0444);
  54MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
  55
  56static int modparam_afterburner = 0;
  57module_param_named(afterburner, modparam_afterburner, int, 0444);
  58MODULE_PARM_DESC(afterburner,
  59	"enable afterburner aka '125 High Speed Mode' (default: off)");
  60
  61static int modparam_power_save = 0;
  62module_param_named(power_save, modparam_power_save, int, 0444);
  63MODULE_PARM_DESC(power_save,
  64	"set power save mode: 0=off, 1=on, 2=fast (default: off)");
  65
  66static int modparam_power_output = 3;
  67module_param_named(power_output, modparam_power_output, int, 0444);
  68MODULE_PARM_DESC(power_output,
  69	"set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
  70
  71static int modparam_roamtrigger = -70;
  72module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
  73MODULE_PARM_DESC(roamtrigger,
  74	"set roaming dBm trigger: -80=optimize for distance, "
  75				"-60=bandwidth (default: -70)");
  76
  77static int modparam_roamdelta = 1;
  78module_param_named(roamdelta, modparam_roamdelta, int, 0444);
  79MODULE_PARM_DESC(roamdelta,
  80	"set roaming tendency: 0=aggressive, 1=moderate, "
  81				"2=conservative (default: moderate)");
  82
  83static int modparam_workaround_interval;
  84module_param_named(workaround_interval, modparam_workaround_interval,
  85							int, 0444);
  86MODULE_PARM_DESC(workaround_interval,
  87	"set stall workaround interval in msecs (0=disabled) (default: 0)");
  88
  89/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
  90#define	WL_NOISE	-96	/* typical noise level in dBm */
  91#define	WL_SIGMAX	-32	/* typical maximum signal level in dBm */
  92
  93
  94/* Assume that Broadcom 4320 (only chipset at time of writing known to be
  95 * based on wireless rndis) has default txpower of 13dBm.
  96 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
  97 *  100% : 20 mW ~ 13dBm
  98 *   75% : 15 mW ~ 12dBm
  99 *   50% : 10 mW ~ 10dBm
 100 *   25% :  5 mW ~  7dBm
 101 */
 102#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
 103#define BCM4320_DEFAULT_TXPOWER_DBM_75  12
 104#define BCM4320_DEFAULT_TXPOWER_DBM_50  10
 105#define BCM4320_DEFAULT_TXPOWER_DBM_25  7
 106
 107/* Known device types */
 108#define RNDIS_UNKNOWN	0
 109#define RNDIS_BCM4320A	1
 110#define RNDIS_BCM4320B	2
 111
 112
 113/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
 114 * slightly modified for datatype endianess, etc
 115 */
 116#define NDIS_802_11_LENGTH_SSID 32
 117#define NDIS_802_11_LENGTH_RATES 8
 118#define NDIS_802_11_LENGTH_RATES_EX 16
 119
 120enum ndis_80211_net_type {
 121	NDIS_80211_TYPE_FREQ_HOP,
 122	NDIS_80211_TYPE_DIRECT_SEQ,
 123	NDIS_80211_TYPE_OFDM_A,
 124	NDIS_80211_TYPE_OFDM_G
 125};
 126
 127enum ndis_80211_net_infra {
 128	NDIS_80211_INFRA_ADHOC,
 129	NDIS_80211_INFRA_INFRA,
 130	NDIS_80211_INFRA_AUTO_UNKNOWN
 131};
 132
 133enum ndis_80211_auth_mode {
 134	NDIS_80211_AUTH_OPEN,
 135	NDIS_80211_AUTH_SHARED,
 136	NDIS_80211_AUTH_AUTO_SWITCH,
 137	NDIS_80211_AUTH_WPA,
 138	NDIS_80211_AUTH_WPA_PSK,
 139	NDIS_80211_AUTH_WPA_NONE,
 140	NDIS_80211_AUTH_WPA2,
 141	NDIS_80211_AUTH_WPA2_PSK
 142};
 143
 144enum ndis_80211_encr_status {
 145	NDIS_80211_ENCR_WEP_ENABLED,
 146	NDIS_80211_ENCR_DISABLED,
 147	NDIS_80211_ENCR_WEP_KEY_ABSENT,
 148	NDIS_80211_ENCR_NOT_SUPPORTED,
 149	NDIS_80211_ENCR_TKIP_ENABLED,
 150	NDIS_80211_ENCR_TKIP_KEY_ABSENT,
 151	NDIS_80211_ENCR_CCMP_ENABLED,
 152	NDIS_80211_ENCR_CCMP_KEY_ABSENT
 153};
 154
 155enum ndis_80211_priv_filter {
 156	NDIS_80211_PRIV_ACCEPT_ALL,
 157	NDIS_80211_PRIV_8021X_WEP
 158};
 159
 160enum ndis_80211_status_type {
 161	NDIS_80211_STATUSTYPE_AUTHENTICATION,
 162	NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
 163	NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
 164	NDIS_80211_STATUSTYPE_RADIOSTATE,
 165};
 166
 167enum ndis_80211_media_stream_mode {
 168	NDIS_80211_MEDIA_STREAM_OFF,
 169	NDIS_80211_MEDIA_STREAM_ON
 170};
 171
 172enum ndis_80211_radio_status {
 173	NDIS_80211_RADIO_STATUS_ON,
 174	NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
 175	NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
 176};
 177
 178enum ndis_80211_addkey_bits {
 179	NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
 180	NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
 181	NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
 182	NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 183};
 184
 185enum ndis_80211_addwep_bits {
 186	NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
 187	NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
 188};
 189
 190enum ndis_80211_power_mode {
 191	NDIS_80211_POWER_MODE_CAM,
 192	NDIS_80211_POWER_MODE_MAX_PSP,
 193	NDIS_80211_POWER_MODE_FAST_PSP,
 194};
 195
 196enum ndis_80211_pmkid_cand_list_flag_bits {
 197	NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
 198};
 199
 200struct ndis_80211_auth_request {
 201	__le32 length;
 202	u8 bssid[ETH_ALEN];
 203	u8 padding[2];
 204	__le32 flags;
 205} __packed;
 206
 207struct ndis_80211_pmkid_candidate {
 208	u8 bssid[ETH_ALEN];
 209	u8 padding[2];
 210	__le32 flags;
 211} __packed;
 212
 213struct ndis_80211_pmkid_cand_list {
 214	__le32 version;
 215	__le32 num_candidates;
 216	struct ndis_80211_pmkid_candidate candidate_list[0];
 217} __packed;
 218
 219struct ndis_80211_status_indication {
 220	__le32 status_type;
 221	union {
 222		__le32					media_stream_mode;
 223		__le32					radio_status;
 224		struct ndis_80211_auth_request		auth_request[0];
 225		struct ndis_80211_pmkid_cand_list	cand_list;
 226	} u;
 227} __packed;
 228
 229struct ndis_80211_ssid {
 230	__le32 length;
 231	u8 essid[NDIS_802_11_LENGTH_SSID];
 232} __packed;
 233
 234struct ndis_80211_conf_freq_hop {
 235	__le32 length;
 236	__le32 hop_pattern;
 237	__le32 hop_set;
 238	__le32 dwell_time;
 239} __packed;
 240
 241struct ndis_80211_conf {
 242	__le32 length;
 243	__le32 beacon_period;
 244	__le32 atim_window;
 245	__le32 ds_config;
 246	struct ndis_80211_conf_freq_hop fh_config;
 247} __packed;
 248
 249struct ndis_80211_bssid_ex {
 250	__le32 length;
 251	u8 mac[ETH_ALEN];
 252	u8 padding[2];
 253	struct ndis_80211_ssid ssid;
 254	__le32 privacy;
 255	__le32 rssi;
 256	__le32 net_type;
 257	struct ndis_80211_conf config;
 258	__le32 net_infra;
 259	u8 rates[NDIS_802_11_LENGTH_RATES_EX];
 260	__le32 ie_length;
 261	u8 ies[0];
 262} __packed;
 263
 264struct ndis_80211_bssid_list_ex {
 265	__le32 num_items;
 266	struct ndis_80211_bssid_ex bssid[0];
 267} __packed;
 268
 269struct ndis_80211_fixed_ies {
 270	u8 timestamp[8];
 271	__le16 beacon_interval;
 272	__le16 capabilities;
 273} __packed;
 274
 275struct ndis_80211_wep_key {
 276	__le32 size;
 277	__le32 index;
 278	__le32 length;
 279	u8 material[32];
 280} __packed;
 281
 282struct ndis_80211_key {
 283	__le32 size;
 284	__le32 index;
 285	__le32 length;
 286	u8 bssid[ETH_ALEN];
 287	u8 padding[6];
 288	u8 rsc[8];
 289	u8 material[32];
 290} __packed;
 291
 292struct ndis_80211_remove_key {
 293	__le32 size;
 294	__le32 index;
 295	u8 bssid[ETH_ALEN];
 296	u8 padding[2];
 297} __packed;
 298
 299struct ndis_config_param {
 300	__le32 name_offs;
 301	__le32 name_length;
 302	__le32 type;
 303	__le32 value_offs;
 304	__le32 value_length;
 305} __packed;
 306
 307struct ndis_80211_assoc_info {
 308	__le32 length;
 309	__le16 req_ies;
 310	struct req_ie {
 311		__le16 capa;
 312		__le16 listen_interval;
 313		u8 cur_ap_address[ETH_ALEN];
 314	} req_ie;
 315	__le32 req_ie_length;
 316	__le32 offset_req_ies;
 317	__le16 resp_ies;
 318	struct resp_ie {
 319		__le16 capa;
 320		__le16 status_code;
 321		__le16 assoc_id;
 322	} resp_ie;
 323	__le32 resp_ie_length;
 324	__le32 offset_resp_ies;
 325} __packed;
 326
 327struct ndis_80211_auth_encr_pair {
 328	__le32 auth_mode;
 329	__le32 encr_mode;
 330} __packed;
 331
 332struct ndis_80211_capability {
 333	__le32 length;
 334	__le32 version;
 335	__le32 num_pmkids;
 336	__le32 num_auth_encr_pair;
 337	struct ndis_80211_auth_encr_pair auth_encr_pair[0];
 338} __packed;
 339
 340struct ndis_80211_bssid_info {
 341	u8 bssid[ETH_ALEN];
 342	u8 pmkid[16];
 343} __packed;
 344
 345struct ndis_80211_pmkid {
 346	__le32 length;
 347	__le32 bssid_info_count;
 348	struct ndis_80211_bssid_info bssid_info[0];
 349} __packed;
 350
 351/*
 352 *  private data
 353 */
 354#define CAP_MODE_80211A		1
 355#define CAP_MODE_80211B		2
 356#define CAP_MODE_80211G		4
 357#define CAP_MODE_MASK		7
 358
 359#define WORK_LINK_UP		0
 360#define WORK_LINK_DOWN		1
 361#define WORK_SET_MULTICAST_LIST	2
 362
 363#define RNDIS_WLAN_ALG_NONE	0
 364#define RNDIS_WLAN_ALG_WEP	(1<<0)
 365#define RNDIS_WLAN_ALG_TKIP	(1<<1)
 366#define RNDIS_WLAN_ALG_CCMP	(1<<2)
 367
 368#define RNDIS_WLAN_NUM_KEYS		4
 369#define RNDIS_WLAN_KEY_MGMT_NONE	0
 370#define RNDIS_WLAN_KEY_MGMT_802_1X	(1<<0)
 371#define RNDIS_WLAN_KEY_MGMT_PSK		(1<<1)
 372
 373#define COMMAND_BUFFER_SIZE	(CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 374
 375static const struct ieee80211_channel rndis_channels[] = {
 376	{ .center_freq = 2412 },
 377	{ .center_freq = 2417 },
 378	{ .center_freq = 2422 },
 379	{ .center_freq = 2427 },
 380	{ .center_freq = 2432 },
 381	{ .center_freq = 2437 },
 382	{ .center_freq = 2442 },
 383	{ .center_freq = 2447 },
 384	{ .center_freq = 2452 },
 385	{ .center_freq = 2457 },
 386	{ .center_freq = 2462 },
 387	{ .center_freq = 2467 },
 388	{ .center_freq = 2472 },
 389	{ .center_freq = 2484 },
 390};
 391
 392static const struct ieee80211_rate rndis_rates[] = {
 393	{ .bitrate = 10 },
 394	{ .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 395	{ .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 396	{ .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
 397	{ .bitrate = 60 },
 398	{ .bitrate = 90 },
 399	{ .bitrate = 120 },
 400	{ .bitrate = 180 },
 401	{ .bitrate = 240 },
 402	{ .bitrate = 360 },
 403	{ .bitrate = 480 },
 404	{ .bitrate = 540 }
 405};
 406
 407static const u32 rndis_cipher_suites[] = {
 408	WLAN_CIPHER_SUITE_WEP40,
 409	WLAN_CIPHER_SUITE_WEP104,
 410	WLAN_CIPHER_SUITE_TKIP,
 411	WLAN_CIPHER_SUITE_CCMP,
 412};
 413
 414struct rndis_wlan_encr_key {
 415	int len;
 416	u32 cipher;
 417	u8 material[32];
 418	u8 bssid[ETH_ALEN];
 419	bool pairwise;
 420	bool tx_key;
 421};
 422
 423/* RNDIS device private data */
 424struct rndis_wlan_private {
 425	struct usbnet *usbdev;
 426
 427	struct wireless_dev wdev;
 428
 429	struct cfg80211_scan_request *scan_request;
 430
 431	struct workqueue_struct *workqueue;
 432	struct delayed_work dev_poller_work;
 433	struct delayed_work scan_work;
 434	struct work_struct work;
 435	struct mutex command_lock;
 436	unsigned long work_pending;
 437	int last_qual;
 438	s32 cqm_rssi_thold;
 439	u32 cqm_rssi_hyst;
 440	int last_cqm_event_rssi;
 441
 442	struct ieee80211_supported_band band;
 443	struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
 444	struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
 445	u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
 446
 447	int device_type;
 448	int caps;
 449	int multicast_size;
 450
 451	/* module parameters */
 452	char param_country[4];
 453	int  param_frameburst;
 454	int  param_afterburner;
 455	int  param_power_save;
 456	int  param_power_output;
 457	int  param_roamtrigger;
 458	int  param_roamdelta;
 459	u32  param_workaround_interval;
 460
 461	/* hardware state */
 462	bool radio_on;
 463	int power_mode;
 464	int infra_mode;
 465	bool connected;
 466	u8 bssid[ETH_ALEN];
 467	u32 current_command_oid;
 468
 469	/* encryption stuff */
 470	u8 encr_tx_key_index;
 471	struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
 472	int  wpa_version;
 473
 474	u8 command_buffer[COMMAND_BUFFER_SIZE];
 475};
 476
 477/*
 478 * cfg80211 ops
 479 */
 480static int rndis_change_virtual_intf(struct wiphy *wiphy,
 481					struct net_device *dev,
 482					enum nl80211_iftype type,
 483					struct vif_params *params);
 484
 485static int rndis_scan(struct wiphy *wiphy,
 486			struct cfg80211_scan_request *request);
 487
 488static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
 489
 490static int rndis_set_tx_power(struct wiphy *wiphy,
 491			      struct wireless_dev *wdev,
 492			      enum nl80211_tx_power_setting type,
 493			      int mbm);
 494static int rndis_get_tx_power(struct wiphy *wiphy,
 495			      struct wireless_dev *wdev,
 496			      int *dbm);
 497
 498static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
 499				struct cfg80211_connect_params *sme);
 500
 501static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
 502				u16 reason_code);
 503
 504static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
 505					struct cfg80211_ibss_params *params);
 506
 507static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
 508
 509static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
 510			 u8 key_index, bool pairwise, const u8 *mac_addr,
 511			 struct key_params *params);
 512
 513static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
 514			 u8 key_index, bool pairwise, const u8 *mac_addr);
 515
 516static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
 517				 u8 key_index, bool unicast, bool multicast);
 518
 519static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
 520			     const u8 *mac, struct station_info *sinfo);
 521
 522static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
 523			       int idx, u8 *mac, struct station_info *sinfo);
 524
 525static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 526				struct cfg80211_pmksa *pmksa);
 527
 528static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
 529				struct cfg80211_pmksa *pmksa);
 530
 531static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
 532
 533static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
 534				bool enabled, int timeout);
 535
 536static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
 537					struct net_device *dev,
 538					s32 rssi_thold, u32 rssi_hyst);
 539
 540static const struct cfg80211_ops rndis_config_ops = {
 541	.change_virtual_intf = rndis_change_virtual_intf,
 542	.scan = rndis_scan,
 543	.set_wiphy_params = rndis_set_wiphy_params,
 544	.set_tx_power = rndis_set_tx_power,
 545	.get_tx_power = rndis_get_tx_power,
 546	.connect = rndis_connect,
 547	.disconnect = rndis_disconnect,
 548	.join_ibss = rndis_join_ibss,
 549	.leave_ibss = rndis_leave_ibss,
 550	.add_key = rndis_add_key,
 551	.del_key = rndis_del_key,
 552	.set_default_key = rndis_set_default_key,
 553	.get_station = rndis_get_station,
 554	.dump_station = rndis_dump_station,
 555	.set_pmksa = rndis_set_pmksa,
 556	.del_pmksa = rndis_del_pmksa,
 557	.flush_pmksa = rndis_flush_pmksa,
 558	.set_power_mgmt = rndis_set_power_mgmt,
 559	.set_cqm_rssi_config = rndis_set_cqm_rssi_config,
 560};
 561
 562static void *rndis_wiphy_privid = &rndis_wiphy_privid;
 563
 564
 565static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
 566{
 567	return (struct rndis_wlan_private *)dev->driver_priv;
 568}
 569
 570static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
 571{
 572	switch (priv->param_power_output) {
 573	default:
 574	case 3:
 575		return BCM4320_DEFAULT_TXPOWER_DBM_100;
 576	case 2:
 577		return BCM4320_DEFAULT_TXPOWER_DBM_75;
 578	case 1:
 579		return BCM4320_DEFAULT_TXPOWER_DBM_50;
 580	case 0:
 581		return BCM4320_DEFAULT_TXPOWER_DBM_25;
 582	}
 583}
 584
 585static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
 586{
 587	int cipher = priv->encr_keys[idx].cipher;
 588
 589	return (cipher == WLAN_CIPHER_SUITE_CCMP ||
 590		cipher == WLAN_CIPHER_SUITE_TKIP);
 591}
 592
 593static int rndis_cipher_to_alg(u32 cipher)
 594{
 595	switch (cipher) {
 596	default:
 597		return RNDIS_WLAN_ALG_NONE;
 598	case WLAN_CIPHER_SUITE_WEP40:
 599	case WLAN_CIPHER_SUITE_WEP104:
 600		return RNDIS_WLAN_ALG_WEP;
 601	case WLAN_CIPHER_SUITE_TKIP:
 602		return RNDIS_WLAN_ALG_TKIP;
 603	case WLAN_CIPHER_SUITE_CCMP:
 604		return RNDIS_WLAN_ALG_CCMP;
 605	}
 606}
 607
 608static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
 609{
 610	switch (akm_suite) {
 611	default:
 612		return RNDIS_WLAN_KEY_MGMT_NONE;
 613	case WLAN_AKM_SUITE_8021X:
 614		return RNDIS_WLAN_KEY_MGMT_802_1X;
 615	case WLAN_AKM_SUITE_PSK:
 616		return RNDIS_WLAN_KEY_MGMT_PSK;
 617	}
 618}
 619
 620#ifdef DEBUG
 621static const char *oid_to_string(u32 oid)
 622{
 623	switch (oid) {
 624#define OID_STR(oid) case oid: return(#oid)
 625		/* from rndis_host.h */
 626		OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
 627		OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
 628		OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
 629		OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
 630
 631		/* from rndis_wlan.c */
 632		OID_STR(RNDIS_OID_GEN_LINK_SPEED);
 633		OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
 634
 635		OID_STR(RNDIS_OID_GEN_XMIT_OK);
 636		OID_STR(RNDIS_OID_GEN_RCV_OK);
 637		OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
 638		OID_STR(RNDIS_OID_GEN_RCV_ERROR);
 639		OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
 640
 641		OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
 642		OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
 643		OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
 644
 645		OID_STR(RNDIS_OID_802_11_BSSID);
 646		OID_STR(RNDIS_OID_802_11_SSID);
 647		OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
 648		OID_STR(RNDIS_OID_802_11_ADD_WEP);
 649		OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
 650		OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
 651		OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
 652		OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
 653		OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
 654		OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
 655		OID_STR(RNDIS_OID_802_11_ADD_KEY);
 656		OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
 657		OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
 658		OID_STR(RNDIS_OID_802_11_CAPABILITY);
 659		OID_STR(RNDIS_OID_802_11_PMKID);
 660		OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
 661		OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
 662		OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
 663		OID_STR(RNDIS_OID_802_11_RSSI);
 664		OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
 665		OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
 666		OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
 667		OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
 668		OID_STR(RNDIS_OID_802_11_CONFIGURATION);
 669		OID_STR(RNDIS_OID_802_11_POWER_MODE);
 670		OID_STR(RNDIS_OID_802_11_BSSID_LIST);
 671#undef OID_STR
 672	}
 673
 674	return "?";
 675}
 676#else
 677static const char *oid_to_string(u32 oid)
 678{
 679	return "?";
 680}
 681#endif
 682
 683/* translate error code */
 684static int rndis_error_status(__le32 rndis_status)
 685{
 686	int ret = -EINVAL;
 687	switch (le32_to_cpu(rndis_status)) {
 688	case RNDIS_STATUS_SUCCESS:
 689		ret = 0;
 690		break;
 691	case RNDIS_STATUS_FAILURE:
 692	case RNDIS_STATUS_INVALID_DATA:
 693		ret = -EINVAL;
 694		break;
 695	case RNDIS_STATUS_NOT_SUPPORTED:
 696		ret = -EOPNOTSUPP;
 697		break;
 698	case RNDIS_STATUS_ADAPTER_NOT_READY:
 699	case RNDIS_STATUS_ADAPTER_NOT_OPEN:
 700		ret = -EBUSY;
 701		break;
 702	}
 703	return ret;
 704}
 705
 706static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
 707{
 708	struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 709	union {
 710		void			*buf;
 711		struct rndis_msg_hdr	*header;
 712		struct rndis_query	*get;
 713		struct rndis_query_c	*get_c;
 714	} u;
 715	int ret, buflen;
 716	int resplen, respoffs, copylen;
 717
 718	buflen = *len + sizeof(*u.get);
 719	if (buflen < CONTROL_BUFFER_SIZE)
 720		buflen = CONTROL_BUFFER_SIZE;
 721
 722	if (buflen > COMMAND_BUFFER_SIZE) {
 723		u.buf = kmalloc(buflen, GFP_KERNEL);
 724		if (!u.buf)
 725			return -ENOMEM;
 726	} else {
 727		u.buf = priv->command_buffer;
 728	}
 729
 730	mutex_lock(&priv->command_lock);
 731
 732	memset(u.get, 0, sizeof *u.get);
 733	u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
 734	u.get->msg_len = cpu_to_le32(sizeof *u.get);
 735	u.get->oid = cpu_to_le32(oid);
 736
 737	priv->current_command_oid = oid;
 738	ret = rndis_command(dev, u.header, buflen);
 739	priv->current_command_oid = 0;
 740	if (ret < 0)
 741		netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 742			   __func__, oid_to_string(oid), ret,
 743			   le32_to_cpu(u.get_c->status));
 744
 745	if (ret == 0) {
 746		resplen = le32_to_cpu(u.get_c->len);
 747		respoffs = le32_to_cpu(u.get_c->offset) + 8;
 748
 749		if (respoffs > buflen) {
 750			/* Device returned data offset outside buffer, error. */
 751			netdev_dbg(dev->net, "%s(%s): received invalid "
 752				"data offset: %d > %d\n", __func__,
 753				oid_to_string(oid), respoffs, buflen);
 754
 755			ret = -EINVAL;
 756			goto exit_unlock;
 757		}
 758
 759		if ((resplen + respoffs) > buflen) {
 760			/* Device would have returned more data if buffer would
 761			 * have been big enough. Copy just the bits that we got.
 762			 */
 763			copylen = buflen - respoffs;
 764		} else {
 765			copylen = resplen;
 766		}
 767
 768		if (copylen > *len)
 769			copylen = *len;
 770
 771		memcpy(data, u.buf + respoffs, copylen);
 772
 773		*len = resplen;
 774
 775		ret = rndis_error_status(u.get_c->status);
 776		if (ret < 0)
 777			netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
 778				   __func__, oid_to_string(oid),
 779				   le32_to_cpu(u.get_c->status), ret);
 780	}
 781
 782exit_unlock:
 783	mutex_unlock(&priv->command_lock);
 784
 785	if (u.buf != priv->command_buffer)
 786		kfree(u.buf);
 787	return ret;
 788}
 789
 790static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
 791			 int len)
 792{
 793	struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
 794	union {
 795		void			*buf;
 796		struct rndis_msg_hdr	*header;
 797		struct rndis_set	*set;
 798		struct rndis_set_c	*set_c;
 799	} u;
 800	int ret, buflen;
 801
 802	buflen = len + sizeof(*u.set);
 803	if (buflen < CONTROL_BUFFER_SIZE)
 804		buflen = CONTROL_BUFFER_SIZE;
 805
 806	if (buflen > COMMAND_BUFFER_SIZE) {
 807		u.buf = kmalloc(buflen, GFP_KERNEL);
 808		if (!u.buf)
 809			return -ENOMEM;
 810	} else {
 811		u.buf = priv->command_buffer;
 812	}
 813
 814	mutex_lock(&priv->command_lock);
 815
 816	memset(u.set, 0, sizeof *u.set);
 817	u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
 818	u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
 819	u.set->oid = cpu_to_le32(oid);
 820	u.set->len = cpu_to_le32(len);
 821	u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
 822	u.set->handle = cpu_to_le32(0);
 823	memcpy(u.buf + sizeof(*u.set), data, len);
 824
 825	priv->current_command_oid = oid;
 826	ret = rndis_command(dev, u.header, buflen);
 827	priv->current_command_oid = 0;
 828	if (ret < 0)
 829		netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
 830			   __func__, oid_to_string(oid), ret,
 831			   le32_to_cpu(u.set_c->status));
 832
 833	if (ret == 0) {
 834		ret = rndis_error_status(u.set_c->status);
 835
 836		if (ret < 0)
 837			netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
 838				   __func__, oid_to_string(oid),
 839				   le32_to_cpu(u.set_c->status), ret);
 840	}
 841
 842	mutex_unlock(&priv->command_lock);
 843
 844	if (u.buf != priv->command_buffer)
 845		kfree(u.buf);
 846	return ret;
 847}
 848
 849static int rndis_reset(struct usbnet *usbdev)
 850{
 851	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 852	struct rndis_reset *reset;
 853	int ret;
 854
 855	mutex_lock(&priv->command_lock);
 856
 857	reset = (void *)priv->command_buffer;
 858	memset(reset, 0, sizeof(*reset));
 859	reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
 860	reset->msg_len = cpu_to_le32(sizeof(*reset));
 861	priv->current_command_oid = 0;
 862	ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
 863
 864	mutex_unlock(&priv->command_lock);
 865
 866	if (ret < 0)
 867		return ret;
 868	return 0;
 869}
 870
 871/*
 872 * Specs say that we can only set config parameters only soon after device
 873 * initialization.
 874 *   value_type: 0 = u32, 2 = unicode string
 875 */
 876static int rndis_set_config_parameter(struct usbnet *dev, char *param,
 877						int value_type, void *value)
 878{
 879	struct ndis_config_param *infobuf;
 880	int value_len, info_len, param_len, ret, i;
 881	__le16 *unibuf;
 882	__le32 *dst_value;
 883
 884	if (value_type == 0)
 885		value_len = sizeof(__le32);
 886	else if (value_type == 2)
 887		value_len = strlen(value) * sizeof(__le16);
 888	else
 889		return -EINVAL;
 890
 891	param_len = strlen(param) * sizeof(__le16);
 892	info_len = sizeof(*infobuf) + param_len + value_len;
 893
 894#ifdef DEBUG
 895	info_len += 12;
 896#endif
 897	infobuf = kmalloc(info_len, GFP_KERNEL);
 898	if (!infobuf)
 899		return -ENOMEM;
 900
 901#ifdef DEBUG
 902	info_len -= 12;
 903	/* extra 12 bytes are for padding (debug output) */
 904	memset(infobuf, 0xCC, info_len + 12);
 905#endif
 906
 907	if (value_type == 2)
 908		netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
 909			   param, (u8 *)value);
 910	else
 911		netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
 912			   param, *(u32 *)value);
 913
 914	infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
 915	infobuf->name_length = cpu_to_le32(param_len);
 916	infobuf->type = cpu_to_le32(value_type);
 917	infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
 918	infobuf->value_length = cpu_to_le32(value_len);
 919
 920	/* simple string to unicode string conversion */
 921	unibuf = (void *)infobuf + sizeof(*infobuf);
 922	for (i = 0; i < param_len / sizeof(__le16); i++)
 923		unibuf[i] = cpu_to_le16(param[i]);
 924
 925	if (value_type == 2) {
 926		unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
 927		for (i = 0; i < value_len / sizeof(__le16); i++)
 928			unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
 929	} else {
 930		dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
 931		*dst_value = cpu_to_le32(*(u32 *)value);
 932	}
 933
 934#ifdef DEBUG
 935	netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
 936	for (i = 0; i < info_len; i += 12) {
 937		u32 *tmp = (u32 *)((u8 *)infobuf + i);
 938		netdev_dbg(dev->net, "%08X:%08X:%08X\n",
 939			   cpu_to_be32(tmp[0]),
 940			   cpu_to_be32(tmp[1]),
 941			   cpu_to_be32(tmp[2]));
 942	}
 943#endif
 944
 945	ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
 946							infobuf, info_len);
 947	if (ret != 0)
 948		netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
 949			   ret);
 950
 951	kfree(infobuf);
 952	return ret;
 953}
 954
 955static int rndis_set_config_parameter_str(struct usbnet *dev,
 956						char *param, char *value)
 957{
 958	return rndis_set_config_parameter(dev, param, 2, value);
 959}
 960
 961/*
 962 * data conversion functions
 963 */
 964static int level_to_qual(int level)
 965{
 966	int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
 967	return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
 968}
 969
 970/*
 971 * common functions
 972 */
 973static int set_infra_mode(struct usbnet *usbdev, int mode);
 974static void restore_keys(struct usbnet *usbdev);
 975static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
 976					bool *matched);
 977
 978static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
 979{
 980	__le32 tmp;
 981
 982	/* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
 983	tmp = cpu_to_le32(1);
 984	return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
 985							sizeof(tmp));
 986}
 987
 988static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
 989{
 990	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
 991	int ret;
 992
 993	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
 994			    ssid, sizeof(*ssid));
 995	if (ret < 0) {
 996		netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
 997		return ret;
 998	}
 999	if (ret == 0) {
1000		priv->radio_on = true;
1001		netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1002	}
1003
1004	return ret;
1005}
1006
1007static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1008{
1009	int ret;
1010
1011	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1012			    bssid, ETH_ALEN);
1013	if (ret < 0) {
1014		netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1015			    bssid, ret);
1016		return ret;
1017	}
1018
1019	return ret;
1020}
1021
1022static int clear_bssid(struct usbnet *usbdev)
1023{
1024	static const u8 broadcast_mac[ETH_ALEN] = {
1025		0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1026	};
1027
1028	return set_bssid(usbdev, broadcast_mac);
1029}
1030
1031static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1032{
1033	int ret, len;
1034
1035	len = ETH_ALEN;
1036	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1037			      bssid, &len);
1038
1039	if (ret != 0)
1040		eth_zero_addr(bssid);
1041
1042	return ret;
1043}
1044
1045static int get_association_info(struct usbnet *usbdev,
1046			struct ndis_80211_assoc_info *info, int len)
1047{
1048	return rndis_query_oid(usbdev,
1049			RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1050			info, &len);
1051}
1052
1053static bool is_associated(struct usbnet *usbdev)
1054{
1055	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1056	u8 bssid[ETH_ALEN];
1057	int ret;
1058
1059	if (!priv->radio_on)
1060		return false;
1061
1062	ret = get_bssid(usbdev, bssid);
1063
1064	return (ret == 0 && !is_zero_ether_addr(bssid));
1065}
1066
1067static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1068{
1069	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1070	struct ndis_80211_ssid ssid;
1071	int i, ret = 0;
1072
1073	if (priv->radio_on) {
1074		ret = rndis_set_oid(usbdev,
1075				RNDIS_OID_802_11_DISASSOCIATE,
1076				NULL, 0);
1077		if (ret == 0) {
1078			priv->radio_on = false;
1079			netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1080				   __func__);
1081
1082			if (reset_ssid)
1083				msleep(100);
1084		}
1085	}
1086
1087	/* disassociate causes radio to be turned off; if reset_ssid
1088	 * is given, set random ssid to enable radio */
1089	if (reset_ssid) {
1090		/* Set device to infrastructure mode so we don't get ad-hoc
1091		 * 'media connect' indications with the random ssid.
1092		 */
1093		set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1094
1095		ssid.length = cpu_to_le32(sizeof(ssid.essid));
1096		get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1097		ssid.essid[0] = 0x1;
1098		ssid.essid[1] = 0xff;
1099		for (i = 2; i < sizeof(ssid.essid); i++)
1100			ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1101		ret = set_essid(usbdev, &ssid);
1102	}
1103	return ret;
1104}
1105
1106static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1107				enum nl80211_auth_type auth_type, int keymgmt)
1108{
1109	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1110	__le32 tmp;
1111	int auth_mode, ret;
1112
1113	netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1114		   __func__, wpa_version, auth_type, keymgmt);
1115
1116	if (wpa_version & NL80211_WPA_VERSION_2) {
1117		if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1118			auth_mode = NDIS_80211_AUTH_WPA2;
1119		else
1120			auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1121	} else if (wpa_version & NL80211_WPA_VERSION_1) {
1122		if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1123			auth_mode = NDIS_80211_AUTH_WPA;
1124		else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1125			auth_mode = NDIS_80211_AUTH_WPA_PSK;
1126		else
1127			auth_mode = NDIS_80211_AUTH_WPA_NONE;
1128	} else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1129		auth_mode = NDIS_80211_AUTH_SHARED;
1130	else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1131		auth_mode = NDIS_80211_AUTH_OPEN;
1132	else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1133		auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1134	else
1135		return -ENOTSUPP;
1136
1137	tmp = cpu_to_le32(auth_mode);
1138	ret = rndis_set_oid(usbdev,
1139			    RNDIS_OID_802_11_AUTHENTICATION_MODE,
1140			    &tmp, sizeof(tmp));
1141	if (ret != 0) {
1142		netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1143			    ret);
1144		return ret;
1145	}
1146
1147	priv->wpa_version = wpa_version;
1148
1149	return 0;
1150}
1151
1152static int set_priv_filter(struct usbnet *usbdev)
1153{
1154	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155	__le32 tmp;
1156
1157	netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1158		   __func__, priv->wpa_version);
1159
1160	if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1161	    priv->wpa_version & NL80211_WPA_VERSION_1)
1162		tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1163	else
1164		tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1165
1166	return rndis_set_oid(usbdev,
1167			     RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1168			     sizeof(tmp));
1169}
1170
1171static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1172{
1173	__le32 tmp;
1174	int encr_mode, ret;
1175
1176	netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1177		   __func__, pairwise, groupwise);
1178
1179	if (pairwise & RNDIS_WLAN_ALG_CCMP)
1180		encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1181	else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1182		encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1183	else if (pairwise & RNDIS_WLAN_ALG_WEP)
1184		encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1185	else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1186		encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1187	else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1188		encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1189	else
1190		encr_mode = NDIS_80211_ENCR_DISABLED;
1191
1192	tmp = cpu_to_le32(encr_mode);
1193	ret = rndis_set_oid(usbdev,
1194			RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1195			sizeof(tmp));
1196	if (ret != 0) {
1197		netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1198			    ret);
1199		return ret;
1200	}
1201
1202	return 0;
1203}
1204
1205static int set_infra_mode(struct usbnet *usbdev, int mode)
1206{
1207	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1208	__le32 tmp;
1209	int ret;
1210
1211	netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1212		   __func__, priv->infra_mode);
1213
1214	tmp = cpu_to_le32(mode);
1215	ret = rndis_set_oid(usbdev,
1216			    RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1217			    &tmp, sizeof(tmp));
1218	if (ret != 0) {
1219		netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1220			    ret);
1221		return ret;
1222	}
1223
1224	/* NDIS drivers clear keys when infrastructure mode is
1225	 * changed. But Linux tools assume otherwise. So set the
1226	 * keys */
1227	restore_keys(usbdev);
1228
1229	priv->infra_mode = mode;
1230	return 0;
1231}
1232
1233static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1234{
1235	__le32 tmp;
1236
1237	netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1238
1239	if (rts_threshold == -1 || rts_threshold > 2347)
1240		rts_threshold = 2347;
1241
1242	tmp = cpu_to_le32(rts_threshold);
1243	return rndis_set_oid(usbdev,
1244			     RNDIS_OID_802_11_RTS_THRESHOLD,
1245			     &tmp, sizeof(tmp));
1246}
1247
1248static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1249{
1250	__le32 tmp;
1251
1252	netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1253
1254	if (frag_threshold < 256 || frag_threshold > 2346)
1255		frag_threshold = 2346;
1256
1257	tmp = cpu_to_le32(frag_threshold);
1258	return rndis_set_oid(usbdev,
1259			RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1260			&tmp, sizeof(tmp));
1261}
1262
1263static void set_default_iw_params(struct usbnet *usbdev)
1264{
1265	set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1266	set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1267						RNDIS_WLAN_KEY_MGMT_NONE);
1268	set_priv_filter(usbdev);
1269	set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1270}
1271
1272static int deauthenticate(struct usbnet *usbdev)
1273{
1274	int ret;
1275
1276	ret = disassociate(usbdev, true);
1277	set_default_iw_params(usbdev);
1278	return ret;
1279}
1280
1281static int set_channel(struct usbnet *usbdev, int channel)
1282{
1283	struct ndis_80211_conf config;
1284	unsigned int dsconfig;
1285	int len, ret;
1286
1287	netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1288
1289	/* this OID is valid only when not associated */
1290	if (is_associated(usbdev))
1291		return 0;
1292
1293	dsconfig = 1000 *
1294		ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1295
1296	len = sizeof(config);
1297	ret = rndis_query_oid(usbdev,
1298			RNDIS_OID_802_11_CONFIGURATION,
1299			&config, &len);
1300	if (ret < 0) {
1301		netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1302			   __func__);
1303		return ret;
1304	}
1305
1306	config.ds_config = cpu_to_le32(dsconfig);
1307	ret = rndis_set_oid(usbdev,
1308			RNDIS_OID_802_11_CONFIGURATION,
1309			&config, sizeof(config));
1310
1311	netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1312
1313	return ret;
1314}
1315
1316static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1317						     u32 *beacon_period)
1318{
1319	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1320	struct ieee80211_channel *channel;
1321	struct ndis_80211_conf config;
1322	int len, ret;
1323
1324	/* Get channel and beacon interval */
1325	len = sizeof(config);
1326	ret = rndis_query_oid(usbdev,
1327			RNDIS_OID_802_11_CONFIGURATION,
1328			&config, &len);
1329	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1330				__func__, ret);
1331	if (ret < 0)
1332		return NULL;
1333
1334	channel = ieee80211_get_channel(priv->wdev.wiphy,
1335				KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1336	if (!channel)
1337		return NULL;
1338
1339	if (beacon_period)
1340		*beacon_period = le32_to_cpu(config.beacon_period);
1341	return channel;
1342}
1343
1344/* index must be 0 - N, as per NDIS  */
1345static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1346								u8 index)
1347{
1348	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1349	struct ndis_80211_wep_key ndis_key;
1350	u32 cipher;
1351	int ret;
1352
1353	netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1354		   __func__, index, key_len);
1355
1356	if (index >= RNDIS_WLAN_NUM_KEYS)
1357		return -EINVAL;
1358
1359	if (key_len == 5)
1360		cipher = WLAN_CIPHER_SUITE_WEP40;
1361	else if (key_len == 13)
1362		cipher = WLAN_CIPHER_SUITE_WEP104;
1363	else
1364		return -EINVAL;
1365
1366	memset(&ndis_key, 0, sizeof(ndis_key));
1367
1368	ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1369	ndis_key.length = cpu_to_le32(key_len);
1370	ndis_key.index = cpu_to_le32(index);
1371	memcpy(&ndis_key.material, key, key_len);
1372
1373	if (index == priv->encr_tx_key_index) {
1374		ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1375		ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1376							RNDIS_WLAN_ALG_NONE);
1377		if (ret)
1378			netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1379				    ret);
1380	}
1381
1382	ret = rndis_set_oid(usbdev,
1383			RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1384			sizeof(ndis_key));
1385	if (ret != 0) {
1386		netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1387			    index + 1, ret);
1388		return ret;
1389	}
1390
1391	priv->encr_keys[index].len = key_len;
1392	priv->encr_keys[index].cipher = cipher;
1393	memcpy(&priv->encr_keys[index].material, key, key_len);
1394	eth_broadcast_addr(priv->encr_keys[index].bssid);
1395
1396	return 0;
1397}
1398
1399static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1400			u8 index, const u8 *addr, const u8 *rx_seq,
1401			int seq_len, u32 cipher, __le32 flags)
1402{
1403	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1404	struct ndis_80211_key ndis_key;
1405	bool is_addr_ok;
1406	int ret;
1407
1408	if (index >= RNDIS_WLAN_NUM_KEYS) {
1409		netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1410			   __func__, index);
1411		return -EINVAL;
1412	}
1413	if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1414		netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1415			   __func__, key_len);
1416		return -EINVAL;
1417	}
1418	if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1419		if (!rx_seq || seq_len <= 0) {
1420			netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1421				   __func__);
1422			return -EINVAL;
1423		}
1424		if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1425			netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1426			return -EINVAL;
1427		}
1428	}
1429
1430	is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1431					!is_broadcast_ether_addr(addr);
1432	if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1433		netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1434			   __func__, addr);
1435		return -EINVAL;
1436	}
1437
1438	netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1439		   __func__, index,
1440		   !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1441		   !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1442		   !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1443
1444	memset(&ndis_key, 0, sizeof(ndis_key));
1445
1446	ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1447				sizeof(ndis_key.material) + key_len);
1448	ndis_key.length = cpu_to_le32(key_len);
1449	ndis_key.index = cpu_to_le32(index) | flags;
1450
1451	if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1452		/* wpa_supplicant gives us the Michael MIC RX/TX keys in
1453		 * different order than NDIS spec, so swap the order here. */
1454		memcpy(ndis_key.material, key, 16);
1455		memcpy(ndis_key.material + 16, key + 24, 8);
1456		memcpy(ndis_key.material + 24, key + 16, 8);
1457	} else
1458		memcpy(ndis_key.material, key, key_len);
1459
1460	if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1461		memcpy(ndis_key.rsc, rx_seq, seq_len);
1462
1463	if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1464		/* pairwise key */
1465		memcpy(ndis_key.bssid, addr, ETH_ALEN);
1466	} else {
1467		/* group key */
1468		if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1469			eth_broadcast_addr(ndis_key.bssid);
1470		else
1471			get_bssid(usbdev, ndis_key.bssid);
1472	}
1473
1474	ret = rndis_set_oid(usbdev,
1475			RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1476			le32_to_cpu(ndis_key.size));
1477	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1478		   __func__, ret);
1479	if (ret != 0)
1480		return ret;
1481
1482	memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1483	priv->encr_keys[index].len = key_len;
1484	priv->encr_keys[index].cipher = cipher;
1485	memcpy(&priv->encr_keys[index].material, key, key_len);
1486	if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1487		memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1488	else
1489		eth_broadcast_addr(priv->encr_keys[index].bssid);
1490
1491	if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1492		priv->encr_tx_key_index = index;
1493
1494	return 0;
1495}
1496
1497static int restore_key(struct usbnet *usbdev, u8 key_idx)
1498{
1499	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1500	struct rndis_wlan_encr_key key;
1501
1502	if (is_wpa_key(priv, key_idx))
1503		return 0;
1504
1505	key = priv->encr_keys[key_idx];
1506
1507	netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1508
1509	if (key.len == 0)
1510		return 0;
1511
1512	return add_wep_key(usbdev, key.material, key.len, key_idx);
1513}
1514
1515static void restore_keys(struct usbnet *usbdev)
1516{
1517	int i;
1518
1519	for (i = 0; i < 4; i++)
1520		restore_key(usbdev, i);
1521}
1522
1523static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1524{
1525	memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1526}
1527
1528/* remove_key is for both wep and wpa */
1529static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1530{
1531	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1532	struct ndis_80211_remove_key remove_key;
1533	__le32 keyindex;
1534	bool is_wpa;
1535	int ret;
1536
1537	if (index >= RNDIS_WLAN_NUM_KEYS)
1538		return -ENOENT;
1539
1540	if (priv->encr_keys[index].len == 0)
1541		return 0;
1542
1543	is_wpa = is_wpa_key(priv, index);
1544
1545	netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1546		   __func__, index, is_wpa ? "wpa" : "wep",
1547		   priv->encr_keys[index].len);
1548
1549	clear_key(priv, index);
1550
1551	if (is_wpa) {
1552		remove_key.size = cpu_to_le32(sizeof(remove_key));
1553		remove_key.index = cpu_to_le32(index);
1554		if (bssid) {
1555			/* pairwise key */
1556			if (!is_broadcast_ether_addr(bssid))
1557				remove_key.index |=
1558					NDIS_80211_ADDKEY_PAIRWISE_KEY;
1559			memcpy(remove_key.bssid, bssid,
1560					sizeof(remove_key.bssid));
1561		} else
1562			memset(remove_key.bssid, 0xff,
1563						sizeof(remove_key.bssid));
1564
1565		ret = rndis_set_oid(usbdev,
1566				RNDIS_OID_802_11_REMOVE_KEY,
1567				&remove_key, sizeof(remove_key));
1568		if (ret != 0)
1569			return ret;
1570	} else {
1571		keyindex = cpu_to_le32(index);
1572		ret = rndis_set_oid(usbdev,
1573				RNDIS_OID_802_11_REMOVE_WEP,
1574				&keyindex, sizeof(keyindex));
1575		if (ret != 0) {
1576			netdev_warn(usbdev->net,
1577				    "removing encryption key %d failed (%08X)\n",
1578				    index, ret);
1579			return ret;
1580		}
1581	}
1582
1583	/* if it is transmit key, disable encryption */
1584	if (index == priv->encr_tx_key_index)
1585		set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1586
1587	return 0;
1588}
1589
1590static void set_multicast_list(struct usbnet *usbdev)
1591{
1592	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1593	struct netdev_hw_addr *ha;
1594	__le32 filter, basefilter;
1595	int ret;
1596	char *mc_addrs = NULL;
1597	int mc_count;
1598
1599	basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1600					  RNDIS_PACKET_TYPE_BROADCAST);
1601
1602	if (usbdev->net->flags & IFF_PROMISC) {
1603		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1604				      RNDIS_PACKET_TYPE_ALL_LOCAL);
1605	} else if (usbdev->net->flags & IFF_ALLMULTI) {
1606		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1607	}
1608
1609	if (filter != basefilter)
1610		goto set_filter;
1611
1612	/*
1613	 * mc_list should be accessed holding the lock, so copy addresses to
1614	 * local buffer first.
1615	 */
1616	netif_addr_lock_bh(usbdev->net);
1617	mc_count = netdev_mc_count(usbdev->net);
1618	if (mc_count > priv->multicast_size) {
1619		filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1620	} else if (mc_count) {
1621		int i = 0;
1622
1623		mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1624		if (!mc_addrs) {
1625			netif_addr_unlock_bh(usbdev->net);
1626			return;
1627		}
1628
1629		netdev_for_each_mc_addr(ha, usbdev->net)
1630			memcpy(mc_addrs + i++ * ETH_ALEN,
1631			       ha->addr, ETH_ALEN);
1632	}
1633	netif_addr_unlock_bh(usbdev->net);
1634
1635	if (filter != basefilter)
1636		goto set_filter;
1637
1638	if (mc_count) {
1639		ret = rndis_set_oid(usbdev,
1640				RNDIS_OID_802_3_MULTICAST_LIST,
1641				mc_addrs, mc_count * ETH_ALEN);
1642		kfree(mc_addrs);
1643		if (ret == 0)
1644			filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1645		else
1646			filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1647
1648		netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1649			   mc_count, priv->multicast_size, ret);
1650	}
1651
1652set_filter:
1653	ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1654							sizeof(filter));
1655	if (ret < 0) {
1656		netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1657			    le32_to_cpu(filter));
1658	}
1659
1660	netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1661		   le32_to_cpu(filter), ret);
1662}
1663
1664#ifdef DEBUG
1665static void debug_print_pmkids(struct usbnet *usbdev,
1666				struct ndis_80211_pmkid *pmkids,
1667				const char *func_str)
1668{
1669	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1670	int i, len, count, max_pmkids, entry_len;
1671
1672	max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1673	len = le32_to_cpu(pmkids->length);
1674	count = le32_to_cpu(pmkids->bssid_info_count);
1675
1676	entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1677
1678	netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1679				"%d)\n", func_str, count, len, entry_len);
1680
1681	if (count > max_pmkids)
1682		count = max_pmkids;
1683
1684	for (i = 0; i < count; i++) {
1685		u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1686
1687		netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1688				"pmkid: %08X:%08X:%08X:%08X\n",
1689				func_str, pmkids->bssid_info[i].bssid,
1690				cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1691				cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1692	}
1693}
1694#else
1695static void debug_print_pmkids(struct usbnet *usbdev,
1696				struct ndis_80211_pmkid *pmkids,
1697				const char *func_str)
1698{
1699	return;
1700}
1701#endif
1702
1703static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1704{
1705	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1706	struct ndis_80211_pmkid *pmkids;
1707	int len, ret, max_pmkids;
1708
1709	max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1710	len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1711
1712	pmkids = kzalloc(len, GFP_KERNEL);
1713	if (!pmkids)
1714		return ERR_PTR(-ENOMEM);
1715
1716	pmkids->length = cpu_to_le32(len);
1717	pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1718
1719	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1720			pmkids, &len);
1721	if (ret < 0) {
1722		netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1723				" -> %d\n", __func__, len, max_pmkids, ret);
1724
1725		kfree(pmkids);
1726		return ERR_PTR(ret);
1727	}
1728
1729	if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1730		pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1731
1732	debug_print_pmkids(usbdev, pmkids, __func__);
1733
1734	return pmkids;
1735}
1736
1737static int set_device_pmkids(struct usbnet *usbdev,
1738				struct ndis_80211_pmkid *pmkids)
1739{
1740	int ret, len, num_pmkids;
1741
1742	num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1743	len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1744	pmkids->length = cpu_to_le32(len);
1745
1746	debug_print_pmkids(usbdev, pmkids, __func__);
1747
1748	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1749			    le32_to_cpu(pmkids->length));
1750	if (ret < 0) {
1751		netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1752				"\n", __func__, len, num_pmkids, ret);
1753	}
1754
1755	kfree(pmkids);
1756	return ret;
1757}
1758
1759static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1760						struct ndis_80211_pmkid *pmkids,
1761						struct cfg80211_pmksa *pmksa,
1762						int max_pmkids)
1763{
1764	int i, newlen, err;
1765	unsigned int count;
1766
1767	count = le32_to_cpu(pmkids->bssid_info_count);
1768
1769	if (count > max_pmkids)
1770		count = max_pmkids;
1771
1772	for (i = 0; i < count; i++)
1773		if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1774				     pmksa->bssid))
1775			break;
1776
1777	/* pmkid not found */
1778	if (i == count) {
1779		netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1780					__func__, pmksa->bssid);
1781		err = -ENOENT;
1782		goto error;
1783	}
1784
1785	for (; i + 1 < count; i++)
1786		pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1787
1788	count--;
1789	newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1790
1791	pmkids->length = cpu_to_le32(newlen);
1792	pmkids->bssid_info_count = cpu_to_le32(count);
1793
1794	return pmkids;
1795error:
1796	kfree(pmkids);
1797	return ERR_PTR(err);
1798}
1799
1800static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1801						struct ndis_80211_pmkid *pmkids,
1802						struct cfg80211_pmksa *pmksa,
1803						int max_pmkids)
1804{
1805	struct ndis_80211_pmkid *new_pmkids;
1806	int i, err, newlen;
1807	unsigned int count;
1808
1809	count = le32_to_cpu(pmkids->bssid_info_count);
1810
1811	if (count > max_pmkids)
1812		count = max_pmkids;
1813
1814	/* update with new pmkid */
1815	for (i = 0; i < count; i++) {
1816		if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1817				      pmksa->bssid))
1818			continue;
1819
1820		memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1821								WLAN_PMKID_LEN);
1822
1823		return pmkids;
1824	}
1825
1826	/* out of space, return error */
1827	if (i == max_pmkids) {
1828		netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1829		err = -ENOSPC;
1830		goto error;
1831	}
1832
1833	/* add new pmkid */
1834	newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1835
1836	new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1837	if (!new_pmkids) {
1838		err = -ENOMEM;
1839		goto error;
1840	}
1841	pmkids = new_pmkids;
1842
1843	pmkids->length = cpu_to_le32(newlen);
1844	pmkids->bssid_info_count = cpu_to_le32(count + 1);
1845
1846	memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1847	memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1848
1849	return pmkids;
1850error:
1851	kfree(pmkids);
1852	return ERR_PTR(err);
1853}
1854
1855/*
1856 * cfg80211 ops
1857 */
1858static int rndis_change_virtual_intf(struct wiphy *wiphy,
1859					struct net_device *dev,
1860					enum nl80211_iftype type,
1861					struct vif_params *params)
1862{
1863	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1864	struct usbnet *usbdev = priv->usbdev;
1865	int mode;
1866
1867	switch (type) {
1868	case NL80211_IFTYPE_ADHOC:
1869		mode = NDIS_80211_INFRA_ADHOC;
1870		break;
1871	case NL80211_IFTYPE_STATION:
1872		mode = NDIS_80211_INFRA_INFRA;
1873		break;
1874	default:
1875		return -EINVAL;
1876	}
1877
1878	priv->wdev.iftype = type;
1879
1880	return set_infra_mode(usbdev, mode);
1881}
1882
1883static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1884{
1885	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1886	struct usbnet *usbdev = priv->usbdev;
1887	int err;
1888
1889	if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1890		err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1891		if (err < 0)
1892			return err;
1893	}
1894
1895	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1896		err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1897		if (err < 0)
1898			return err;
1899	}
1900
1901	return 0;
1902}
1903
1904static int rndis_set_tx_power(struct wiphy *wiphy,
1905			      struct wireless_dev *wdev,
1906			      enum nl80211_tx_power_setting type,
1907			      int mbm)
1908{
1909	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1910	struct usbnet *usbdev = priv->usbdev;
1911
1912	netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1913		   __func__, type, mbm);
1914
1915	if (mbm < 0 || (mbm % 100))
1916		return -ENOTSUPP;
1917
1918	/* Device doesn't support changing txpower after initialization, only
1919	 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1920	 * currently used.
1921	 */
1922	if (type == NL80211_TX_POWER_AUTOMATIC ||
1923	    MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1924		if (!priv->radio_on)
1925			disassociate(usbdev, true); /* turn on radio */
1926
1927		return 0;
1928	}
1929
1930	return -ENOTSUPP;
1931}
1932
1933static int rndis_get_tx_power(struct wiphy *wiphy,
1934			      struct wireless_dev *wdev,
1935			      int *dbm)
1936{
1937	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1938	struct usbnet *usbdev = priv->usbdev;
1939
1940	*dbm = get_bcm4320_power_dbm(priv);
1941
1942	netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1943
1944	return 0;
1945}
1946
1947#define SCAN_DELAY_JIFFIES (6 * HZ)
1948static int rndis_scan(struct wiphy *wiphy,
1949			struct cfg80211_scan_request *request)
1950{
1951	struct net_device *dev = request->wdev->netdev;
1952	struct usbnet *usbdev = netdev_priv(dev);
1953	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1954	int ret;
1955	int delay = SCAN_DELAY_JIFFIES;
1956
1957	netdev_dbg(usbdev->net, "cfg80211.scan\n");
1958
1959	/* Get current bssid list from device before new scan, as new scan
1960	 * clears internal bssid list.
1961	 */
1962	rndis_check_bssid_list(usbdev, NULL, NULL);
1963
1964	if (priv->scan_request && priv->scan_request != request)
1965		return -EBUSY;
1966
1967	priv->scan_request = request;
1968
1969	ret = rndis_start_bssid_list_scan(usbdev);
1970	if (ret == 0) {
1971		if (priv->device_type == RNDIS_BCM4320A)
1972			delay = HZ;
1973
1974		/* Wait before retrieving scan results from device */
1975		queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1976	}
1977
1978	return ret;
1979}
1980
1981static bool rndis_bss_info_update(struct usbnet *usbdev,
1982				  struct ndis_80211_bssid_ex *bssid)
1983{
1984	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1985	struct ieee80211_channel *channel;
1986	struct cfg80211_bss *bss;
1987	s32 signal;
1988	u64 timestamp;
1989	u16 capability;
1990	u16 beacon_interval;
1991	struct ndis_80211_fixed_ies *fixed;
1992	int ie_len, bssid_len;
1993	u8 *ie;
1994
1995	netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1996		   bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1997
1998	/* parse bssid structure */
1999	bssid_len = le32_to_cpu(bssid->length);
2000
2001	if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2002			sizeof(struct ndis_80211_fixed_ies))
2003		return NULL;
2004
2005	fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2006
2007	ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2008	ie_len = min(bssid_len - (int)sizeof(*bssid),
2009					(int)le32_to_cpu(bssid->ie_length));
2010	ie_len -= sizeof(struct ndis_80211_fixed_ies);
2011	if (ie_len < 0)
2012		return NULL;
2013
2014	/* extract data for cfg80211_inform_bss */
2015	channel = ieee80211_get_channel(priv->wdev.wiphy,
2016			KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2017	if (!channel)
2018		return NULL;
2019
2020	signal = level_to_qual(le32_to_cpu(bssid->rssi));
2021	timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2022	capability = le16_to_cpu(fixed->capabilities);
2023	beacon_interval = le16_to_cpu(fixed->beacon_interval);
2024
2025	bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2026				  CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2027				  timestamp, capability, beacon_interval,
2028				  ie, ie_len, signal, GFP_KERNEL);
2029	cfg80211_put_bss(priv->wdev.wiphy, bss);
2030
2031	return (bss != NULL);
2032}
2033
2034static struct ndis_80211_bssid_ex *next_bssid_list_item(
2035					struct ndis_80211_bssid_ex *bssid,
2036					int *bssid_len, void *buf, int len)
2037{
2038	void *buf_end, *bssid_end;
2039
2040	buf_end = (char *)buf + len;
2041	bssid_end = (char *)bssid + *bssid_len;
2042
2043	if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2044		*bssid_len = 0;
2045		return NULL;
2046	} else {
2047		bssid = (void *)((char *)bssid + *bssid_len);
2048		*bssid_len = le32_to_cpu(bssid->length);
2049		return bssid;
2050	}
2051}
2052
2053static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2054				  int bssid_len, void *buf, int len)
2055{
2056	void *buf_end, *bssid_end;
2057
2058	if (!bssid || bssid_len <= 0 || bssid_len > len)
2059		return false;
2060
2061	buf_end = (char *)buf + len;
2062	bssid_end = (char *)bssid + bssid_len;
2063
2064	return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2065}
2066
2067static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2068					bool *matched)
2069{
2070	void *buf = NULL;
2071	struct ndis_80211_bssid_list_ex *bssid_list;
2072	struct ndis_80211_bssid_ex *bssid;
2073	int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2074
2075	netdev_dbg(usbdev->net, "%s()\n", __func__);
2076
2077	len = CONTROL_BUFFER_SIZE;
2078resize_buf:
2079	buf = kzalloc(len, GFP_KERNEL);
2080	if (!buf) {
2081		ret = -ENOMEM;
2082		goto out;
2083	}
2084
2085	/* BSSID-list might have got bigger last time we checked, keep
2086	 * resizing until it won't get any bigger.
2087	 */
2088	new_len = len;
2089	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2090			      buf, &new_len);
2091	if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2092		goto out;
2093
2094	if (new_len > len) {
2095		len = new_len;
2096		kfree(buf);
2097		goto resize_buf;
2098	}
2099
2100	len = new_len;
2101
2102	bssid_list = buf;
2103	count = le32_to_cpu(bssid_list->num_items);
2104	real_count = 0;
2105	netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2106
2107	bssid_len = 0;
2108	bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2109
2110	/* Device returns incorrect 'num_items'. Workaround by ignoring the
2111	 * received 'num_items' and walking through full bssid buffer instead.
2112	 */
2113	while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2114		if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2115		    matched) {
2116			if (ether_addr_equal(bssid->mac, match_bssid))
2117				*matched = true;
2118		}
2119
2120		real_count++;
2121		bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2122	}
2123
2124	netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2125				" %d\n", __func__, count, real_count);
2126
2127out:
2128	kfree(buf);
2129	return ret;
2130}
2131
2132static void rndis_get_scan_results(struct work_struct *work)
2133{
2134	struct rndis_wlan_private *priv =
2135		container_of(work, struct rndis_wlan_private, scan_work.work);
2136	struct usbnet *usbdev = priv->usbdev;
2137	struct cfg80211_scan_info info = {};
2138	int ret;
2139
2140	netdev_dbg(usbdev->net, "get_scan_results\n");
2141
2142	if (!priv->scan_request)
2143		return;
2144
2145	ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2146
2147	info.aborted = ret < 0;
2148	cfg80211_scan_done(priv->scan_request, &info);
2149
2150	priv->scan_request = NULL;
2151}
2152
2153static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2154					struct cfg80211_connect_params *sme)
2155{
2156	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2157	struct usbnet *usbdev = priv->usbdev;
2158	struct ieee80211_channel *channel = sme->channel;
2159	struct ndis_80211_ssid ssid;
2160	int pairwise = RNDIS_WLAN_ALG_NONE;
2161	int groupwise = RNDIS_WLAN_ALG_NONE;
2162	int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2163	int length, i, ret, chan = -1;
2164
2165	if (channel)
2166		chan = ieee80211_frequency_to_channel(channel->center_freq);
2167
2168	groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2169	for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2170		pairwise |=
2171			rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2172
2173	if (sme->crypto.n_ciphers_pairwise > 0 &&
2174			pairwise == RNDIS_WLAN_ALG_NONE) {
2175		netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2176		return -ENOTSUPP;
2177	}
2178
2179	for (i = 0; i < sme->crypto.n_akm_suites; i++)
2180		keymgmt |=
2181			rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2182
2183	if (sme->crypto.n_akm_suites > 0 &&
2184			keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2185		netdev_err(usbdev->net, "Invalid keymgmt\n");
2186		return -ENOTSUPP;
2187	}
2188
2189	netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2190		   sme->ssid, sme->bssid, chan,
2191		   sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2192		   groupwise, pairwise, keymgmt);
2193
2194	if (is_associated(usbdev))
2195		disassociate(usbdev, false);
2196
2197	ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2198	if (ret < 0) {
2199		netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2200			   ret);
2201		goto err_turn_radio_on;
2202	}
2203
2204	ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2205								keymgmt);
2206	if (ret < 0) {
2207		netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2208			   ret);
2209		goto err_turn_radio_on;
2210	}
2211
2212	set_priv_filter(usbdev);
2213
2214	ret = set_encr_mode(usbdev, pairwise, groupwise);
2215	if (ret < 0) {
2216		netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2217			   ret);
2218		goto err_turn_radio_on;
2219	}
2220
2221	if (channel) {
2222		ret = set_channel(usbdev, chan);
2223		if (ret < 0) {
2224			netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2225				   ret);
2226			goto err_turn_radio_on;
2227		}
2228	}
2229
2230	if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2231		priv->encr_tx_key_index = sme->key_idx;
2232		ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2233		if (ret < 0) {
2234			netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2235				   ret, sme->key_len, sme->key_idx);
2236			goto err_turn_radio_on;
2237		}
2238	}
2239
2240	if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2241				!is_broadcast_ether_addr(sme->bssid)) {
2242		ret = set_bssid(usbdev, sme->bssid);
2243		if (ret < 0) {
2244			netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2245				   ret);
2246			goto err_turn_radio_on;
2247		}
2248	} else
2249		clear_bssid(usbdev);
2250
2251	length = sme->ssid_len;
2252	if (length > NDIS_802_11_LENGTH_SSID)
2253		length = NDIS_802_11_LENGTH_SSID;
2254
2255	memset(&ssid, 0, sizeof(ssid));
2256	ssid.length = cpu_to_le32(length);
2257	memcpy(ssid.essid, sme->ssid, length);
2258
2259	/* Pause and purge rx queue, so we don't pass packets before
2260	 * 'media connect'-indication.
2261	 */
2262	usbnet_pause_rx(usbdev);
2263	usbnet_purge_paused_rxq(usbdev);
2264
2265	ret = set_essid(usbdev, &ssid);
2266	if (ret < 0)
2267		netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2268	return ret;
2269
2270err_turn_radio_on:
2271	disassociate(usbdev, true);
2272
2273	return ret;
2274}
2275
2276static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2277								u16 reason_code)
2278{
2279	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2280	struct usbnet *usbdev = priv->usbdev;
2281
2282	netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2283
2284	priv->connected = false;
2285	eth_zero_addr(priv->bssid);
2286
2287	return deauthenticate(usbdev);
2288}
2289
2290static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2291					struct cfg80211_ibss_params *params)
2292{
2293	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2294	struct usbnet *usbdev = priv->usbdev;
2295	struct ieee80211_channel *channel = params->chandef.chan;
2296	struct ndis_80211_ssid ssid;
2297	enum nl80211_auth_type auth_type;
2298	int ret, alg, length, chan = -1;
2299
2300	if (channel)
2301		chan = ieee80211_frequency_to_channel(channel->center_freq);
2302
2303	/* TODO: How to handle ad-hoc encryption?
2304	 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2305	 * pre-shared for encryption (open/shared/wpa), is key set before
2306	 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2307	 */
2308	if (params->privacy) {
2309		auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2310		alg = RNDIS_WLAN_ALG_WEP;
2311	} else {
2312		auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2313		alg = RNDIS_WLAN_ALG_NONE;
2314	}
2315
2316	netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2317		   params->ssid, params->bssid, chan, params->privacy);
2318
2319	if (is_associated(usbdev))
2320		disassociate(usbdev, false);
2321
2322	ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2323	if (ret < 0) {
2324		netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2325			   ret);
2326		goto err_turn_radio_on;
2327	}
2328
2329	ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2330	if (ret < 0) {
2331		netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2332			   ret);
2333		goto err_turn_radio_on;
2334	}
2335
2336	set_priv_filter(usbdev);
2337
2338	ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2339	if (ret < 0) {
2340		netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2341			   ret);
2342		goto err_turn_radio_on;
2343	}
2344
2345	if (channel) {
2346		ret = set_channel(usbdev, chan);
2347		if (ret < 0) {
2348			netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2349				   ret);
2350			goto err_turn_radio_on;
2351		}
2352	}
2353
2354	if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2355				!is_broadcast_ether_addr(params->bssid)) {
2356		ret = set_bssid(usbdev, params->bssid);
2357		if (ret < 0) {
2358			netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2359				   ret);
2360			goto err_turn_radio_on;
2361		}
2362	} else
2363		clear_bssid(usbdev);
2364
2365	length = params->ssid_len;
2366	if (length > NDIS_802_11_LENGTH_SSID)
2367		length = NDIS_802_11_LENGTH_SSID;
2368
2369	memset(&ssid, 0, sizeof(ssid));
2370	ssid.length = cpu_to_le32(length);
2371	memcpy(ssid.essid, params->ssid, length);
2372
2373	/* Don't need to pause rx queue for ad-hoc. */
2374	usbnet_purge_paused_rxq(usbdev);
2375	usbnet_resume_rx(usbdev);
2376
2377	ret = set_essid(usbdev, &ssid);
2378	if (ret < 0)
2379		netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2380			   ret);
2381	return ret;
2382
2383err_turn_radio_on:
2384	disassociate(usbdev, true);
2385
2386	return ret;
2387}
2388
2389static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2390{
2391	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2392	struct usbnet *usbdev = priv->usbdev;
2393
2394	netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2395
2396	priv->connected = false;
2397	eth_zero_addr(priv->bssid);
2398
2399	return deauthenticate(usbdev);
2400}
2401
2402static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2403			 u8 key_index, bool pairwise, const u8 *mac_addr,
2404			 struct key_params *params)
2405{
2406	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2407	struct usbnet *usbdev = priv->usbdev;
2408	__le32 flags;
2409
2410	netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2411		   __func__, key_index, mac_addr, params->cipher);
2412
2413	switch (params->cipher) {
2414	case WLAN_CIPHER_SUITE_WEP40:
2415	case WLAN_CIPHER_SUITE_WEP104:
2416		return add_wep_key(usbdev, params->key, params->key_len,
2417								key_index);
2418	case WLAN_CIPHER_SUITE_TKIP:
2419	case WLAN_CIPHER_SUITE_CCMP:
2420		flags = 0;
2421
2422		if (params->seq && params->seq_len > 0)
2423			flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2424		if (mac_addr)
2425			flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2426					NDIS_80211_ADDKEY_TRANSMIT_KEY;
2427
2428		return add_wpa_key(usbdev, params->key, params->key_len,
2429				key_index, mac_addr, params->seq,
2430				params->seq_len, params->cipher, flags);
2431	default:
2432		netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2433			   __func__, params->cipher);
2434		return -ENOTSUPP;
2435	}
2436}
2437
2438static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2439			 u8 key_index, bool pairwise, const u8 *mac_addr)
2440{
2441	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2442	struct usbnet *usbdev = priv->usbdev;
2443
2444	netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2445
2446	return remove_key(usbdev, key_index, mac_addr);
2447}
2448
2449static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2450				 u8 key_index, bool unicast, bool multicast)
2451{
2452	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2453	struct usbnet *usbdev = priv->usbdev;
2454	struct rndis_wlan_encr_key key;
2455
2456	netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2457
2458	if (key_index >= RNDIS_WLAN_NUM_KEYS)
2459		return -ENOENT;
2460
2461	priv->encr_tx_key_index = key_index;
2462
2463	if (is_wpa_key(priv, key_index))
2464		return 0;
2465
2466	key = priv->encr_keys[key_index];
2467
2468	return add_wep_key(usbdev, key.material, key.len, key_index);
2469}
2470
2471static void rndis_fill_station_info(struct usbnet *usbdev,
2472						struct station_info *sinfo)
2473{
2474	__le32 linkspeed, rssi;
2475	int ret, len;
2476
2477	memset(sinfo, 0, sizeof(*sinfo));
2478
2479	len = sizeof(linkspeed);
2480	ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2481	if (ret == 0) {
2482		sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2483		sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
2484	}
2485
2486	len = sizeof(rssi);
2487	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2488			      &rssi, &len);
2489	if (ret == 0) {
2490		sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2491		sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
2492	}
2493}
2494
2495static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2496			     const u8 *mac, struct station_info *sinfo)
2497{
2498	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2499	struct usbnet *usbdev = priv->usbdev;
2500
2501	if (!ether_addr_equal(priv->bssid, mac))
2502		return -ENOENT;
2503
2504	rndis_fill_station_info(usbdev, sinfo);
2505
2506	return 0;
2507}
2508
2509static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2510			       int idx, u8 *mac, struct station_info *sinfo)
2511{
2512	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2513	struct usbnet *usbdev = priv->usbdev;
2514
2515	if (idx != 0)
2516		return -ENOENT;
2517
2518	memcpy(mac, priv->bssid, ETH_ALEN);
2519
2520	rndis_fill_station_info(usbdev, sinfo);
2521
2522	return 0;
2523}
2524
2525static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2526				struct cfg80211_pmksa *pmksa)
2527{
2528	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2529	struct usbnet *usbdev = priv->usbdev;
2530	struct ndis_80211_pmkid *pmkids;
2531	u32 *tmp = (u32 *)pmksa->pmkid;
2532
2533	netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2534			pmksa->bssid,
2535			cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2536			cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2537
2538	pmkids = get_device_pmkids(usbdev);
2539	if (IS_ERR(pmkids)) {
2540		/* couldn't read PMKID cache from device */
2541		return PTR_ERR(pmkids);
2542	}
2543
2544	pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2545	if (IS_ERR(pmkids)) {
2546		/* not found, list full, etc */
2547		return PTR_ERR(pmkids);
2548	}
2549
2550	return set_device_pmkids(usbdev, pmkids);
2551}
2552
2553static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2554				struct cfg80211_pmksa *pmksa)
2555{
2556	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2557	struct usbnet *usbdev = priv->usbdev;
2558	struct ndis_80211_pmkid *pmkids;
2559	u32 *tmp = (u32 *)pmksa->pmkid;
2560
2561	netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2562			pmksa->bssid,
2563			cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2564			cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2565
2566	pmkids = get_device_pmkids(usbdev);
2567	if (IS_ERR(pmkids)) {
2568		/* Couldn't read PMKID cache from device */
2569		return PTR_ERR(pmkids);
2570	}
2571
2572	pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2573	if (IS_ERR(pmkids)) {
2574		/* not found, etc */
2575		return PTR_ERR(pmkids);
2576	}
2577
2578	return set_device_pmkids(usbdev, pmkids);
2579}
2580
2581static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2582{
2583	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2584	struct usbnet *usbdev = priv->usbdev;
2585	struct ndis_80211_pmkid pmkid;
2586
2587	netdev_dbg(usbdev->net, "%s()\n", __func__);
2588
2589	memset(&pmkid, 0, sizeof(pmkid));
2590
2591	pmkid.length = cpu_to_le32(sizeof(pmkid));
2592	pmkid.bssid_info_count = cpu_to_le32(0);
2593
2594	return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2595			     &pmkid, sizeof(pmkid));
2596}
2597
2598static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2599				bool enabled, int timeout)
2600{
2601	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2602	struct usbnet *usbdev = priv->usbdev;
2603	int power_mode;
2604	__le32 mode;
2605	int ret;
2606
2607	if (priv->device_type != RNDIS_BCM4320B)
2608		return -ENOTSUPP;
2609
2610	netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2611				enabled ? "enabled" : "disabled",
2612				timeout);
2613
2614	if (enabled)
2615		power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2616	else
2617		power_mode = NDIS_80211_POWER_MODE_CAM;
2618
2619	if (power_mode == priv->power_mode)
2620		return 0;
2621
2622	priv->power_mode = power_mode;
2623
2624	mode = cpu_to_le32(power_mode);
2625	ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2626			    &mode, sizeof(mode));
2627
2628	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2629				__func__, ret);
2630
2631	return ret;
2632}
2633
2634static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2635					struct net_device *dev,
2636					s32 rssi_thold, u32 rssi_hyst)
2637{
2638	struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2639
2640	priv->cqm_rssi_thold = rssi_thold;
2641	priv->cqm_rssi_hyst = rssi_hyst;
2642	priv->last_cqm_event_rssi = 0;
2643
2644	return 0;
2645}
2646
2647static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2648					   struct ndis_80211_assoc_info *info)
2649{
2650	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2651	struct ieee80211_channel *channel;
2652	struct ndis_80211_ssid ssid;
2653	struct cfg80211_bss *bss;
2654	s32 signal;
2655	u64 timestamp;
2656	u16 capability;
2657	u32 beacon_period = 0;
2658	__le32 rssi;
2659	u8 ie_buf[34];
2660	int len, ret, ie_len;
2661
2662	/* Get signal quality, in case of error use rssi=0 and ignore error. */
2663	len = sizeof(rssi);
2664	rssi = 0;
2665	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2666			      &rssi, &len);
2667	signal = level_to_qual(le32_to_cpu(rssi));
2668
2669	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2670		   "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2671		   level_to_qual(le32_to_cpu(rssi)));
2672
2673	/* Get AP capabilities */
2674	if (info) {
2675		capability = le16_to_cpu(info->resp_ie.capa);
2676	} else {
2677		/* Set atleast ESS/IBSS capability */
2678		capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2679				WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2680	}
2681
2682	/* Get channel and beacon interval */
2683	channel = get_current_channel(usbdev, &beacon_period);
2684	if (!channel) {
2685		netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2686					__func__);
2687		return;
2688	}
2689
2690	/* Get SSID, in case of error, use zero length SSID and ignore error. */
2691	len = sizeof(ssid);
2692	memset(&ssid, 0, sizeof(ssid));
2693	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2694			      &ssid, &len);
2695	netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2696				"'%.32s'\n", __func__, ret,
2697				le32_to_cpu(ssid.length), ssid.essid);
2698
2699	if (le32_to_cpu(ssid.length) > 32)
2700		ssid.length = cpu_to_le32(32);
2701
2702	ie_buf[0] = WLAN_EID_SSID;
2703	ie_buf[1] = le32_to_cpu(ssid.length);
2704	memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2705
2706	ie_len = le32_to_cpu(ssid.length) + 2;
2707
2708	/* no tsf */
2709	timestamp = 0;
2710
2711	netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2712		"capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2713		"signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2714		bssid, (u32)timestamp, capability, beacon_period, ie_len,
2715		ssid.essid, signal);
2716
2717	bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2718				  CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2719				  timestamp, capability, beacon_period,
2720				  ie_buf, ie_len, signal, GFP_KERNEL);
2721	cfg80211_put_bss(priv->wdev.wiphy, bss);
2722}
2723
2724/*
2725 * workers, indication handlers, device poller
2726 */
2727static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2728{
2729	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2730	struct ndis_80211_assoc_info *info = NULL;
2731	u8 bssid[ETH_ALEN];
2732	unsigned int resp_ie_len, req_ie_len;
2733	unsigned int offset;
2734	u8 *req_ie, *resp_ie;
2735	int ret;
2736	bool roamed = false;
2737	bool match_bss;
2738
2739	if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2740		/* received media connect indication while connected, either
2741		 * device reassociated with same AP or roamed to new. */
2742		roamed = true;
2743	}
2744
2745	req_ie_len = 0;
2746	resp_ie_len = 0;
2747	req_ie = NULL;
2748	resp_ie = NULL;
2749
2750	if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2751		info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2752		if (!info) {
2753			/* No memory? Try resume work later */
2754			set_bit(WORK_LINK_UP, &priv->work_pending);
2755			queue_work(priv->workqueue, &priv->work);
2756			return;
2757		}
2758
2759		/* Get association info IEs from device. */
2760		ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2761		if (!ret) {
2762			req_ie_len = le32_to_cpu(info->req_ie_length);
2763			if (req_ie_len > CONTROL_BUFFER_SIZE)
2764				req_ie_len = CONTROL_BUFFER_SIZE;
2765			if (req_ie_len != 0) {
2766				offset = le32_to_cpu(info->offset_req_ies);
2767
2768				if (offset > CONTROL_BUFFER_SIZE)
2769					offset = CONTROL_BUFFER_SIZE;
2770
2771				req_ie = (u8 *)info + offset;
2772
2773				if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2774					req_ie_len =
2775						CONTROL_BUFFER_SIZE - offset;
2776			}
2777
2778			resp_ie_len = le32_to_cpu(info->resp_ie_length);
2779			if (resp_ie_len > CONTROL_BUFFER_SIZE)
2780				resp_ie_len = CONTROL_BUFFER_SIZE;
2781			if (resp_ie_len != 0) {
2782				offset = le32_to_cpu(info->offset_resp_ies);
2783
2784				if (offset > CONTROL_BUFFER_SIZE)
2785					offset = CONTROL_BUFFER_SIZE;
2786
2787				resp_ie = (u8 *)info + offset;
2788
2789				if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2790					resp_ie_len =
2791						CONTROL_BUFFER_SIZE - offset;
2792			}
2793		} else {
2794			/* Since rndis_wlan_craft_connected_bss() might use info
2795			 * later and expects info to contain valid data if
2796			 * non-null, free info and set NULL here.
2797			 */
2798			kfree(info);
2799			info = NULL;
2800		}
2801	} else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2802		return;
2803
2804	ret = get_bssid(usbdev, bssid);
2805	if (ret < 0)
2806		memset(bssid, 0, sizeof(bssid));
2807
2808	netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2809		   bssid, roamed ? " roamed" : "");
2810
2811	/* Internal bss list in device should contain at least the currently
2812	 * connected bss and we can get it to cfg80211 with
2813	 * rndis_check_bssid_list().
2814	 *
2815	 * NDIS spec says: "If the device is associated, but the associated
2816	 *  BSSID is not in its BSSID scan list, then the driver must add an
2817	 *  entry for the BSSID at the end of the data that it returns in
2818	 *  response to query of RNDIS_OID_802_11_BSSID_LIST."
2819	 *
2820	 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2821	 */
2822	match_bss = false;
2823	rndis_check_bssid_list(usbdev, bssid, &match_bss);
2824
2825	if (!is_zero_ether_addr(bssid) && !match_bss) {
2826		/* Couldn't get bss from device, we need to manually craft bss
2827		 * for cfg80211.
2828		 */
2829		rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2830	}
2831
2832	if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2833		if (!roamed) {
2834			cfg80211_connect_result(usbdev->net, bssid, req_ie,
2835						req_ie_len, resp_ie,
2836						resp_ie_len, 0, GFP_KERNEL);
2837		} else {
2838			struct cfg80211_roam_info roam_info = {
2839				.channel = get_current_channel(usbdev, NULL),
2840				.bssid = bssid,
2841				.req_ie = req_ie,
2842				.req_ie_len = req_ie_len,
2843				.resp_ie = resp_ie,
2844				.resp_ie_len = resp_ie_len,
2845			};
2846
2847			cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2848		}
2849	} else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2850		cfg80211_ibss_joined(usbdev->net, bssid,
2851				     get_current_channel(usbdev, NULL),
2852				     GFP_KERNEL);
2853
2854	kfree(info);
2855
2856	priv->connected = true;
2857	memcpy(priv->bssid, bssid, ETH_ALEN);
2858
2859	usbnet_resume_rx(usbdev);
2860	netif_carrier_on(usbdev->net);
2861}
2862
2863static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2864{
2865	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2866
2867	if (priv->connected) {
2868		priv->connected = false;
2869		eth_zero_addr(priv->bssid);
2870
2871		deauthenticate(usbdev);
2872
2873		cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2874	}
2875
2876	netif_carrier_off(usbdev->net);
2877}
2878
2879static void rndis_wlan_worker(struct work_struct *work)
2880{
2881	struct rndis_wlan_private *priv =
2882		container_of(work, struct rndis_wlan_private, work);
2883	struct usbnet *usbdev = priv->usbdev;
2884
2885	if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2886		rndis_wlan_do_link_up_work(usbdev);
2887
2888	if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2889		rndis_wlan_do_link_down_work(usbdev);
2890
2891	if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2892		set_multicast_list(usbdev);
2893}
2894
2895static void rndis_wlan_set_multicast_list(struct net_device *dev)
2896{
2897	struct usbnet *usbdev = netdev_priv(dev);
2898	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2899
2900	if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2901		return;
2902
2903	set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2904	queue_work(priv->workqueue, &priv->work);
2905}
2906
2907static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2908				struct ndis_80211_status_indication *indication,
2909				int len)
2910{
2911	u8 *buf;
2912	const char *type;
2913	int flags, buflen, key_id;
2914	bool pairwise_error, group_error;
2915	struct ndis_80211_auth_request *auth_req;
2916	enum nl80211_key_type key_type;
2917
2918	/* must have at least one array entry */
2919	if (len < offsetof(struct ndis_80211_status_indication, u) +
2920				sizeof(struct ndis_80211_auth_request)) {
2921		netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2922			    len);
2923		return;
2924	}
2925
2926	buf = (void *)&indication->u.auth_request[0];
2927	buflen = len - offsetof(struct ndis_80211_status_indication, u);
2928
2929	while (buflen >= sizeof(*auth_req)) {
2930		auth_req = (void *)buf;
2931		type = "unknown";
2932		flags = le32_to_cpu(auth_req->flags);
2933		pairwise_error = false;
2934		group_error = false;
2935
2936		if (flags & 0x1)
2937			type = "reauth request";
2938		if (flags & 0x2)
2939			type = "key update request";
2940		if (flags & 0x6) {
2941			pairwise_error = true;
2942			type = "pairwise_error";
2943		}
2944		if (flags & 0xe) {
2945			group_error = true;
2946			type = "group_error";
2947		}
2948
2949		netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2950			    type, le32_to_cpu(auth_req->flags));
2951
2952		if (pairwise_error) {
2953			key_type = NL80211_KEYTYPE_PAIRWISE;
2954			key_id = -1;
2955
2956			cfg80211_michael_mic_failure(usbdev->net,
2957							auth_req->bssid,
2958							key_type, key_id, NULL,
2959							GFP_KERNEL);
2960		}
2961
2962		if (group_error) {
2963			key_type = NL80211_KEYTYPE_GROUP;
2964			key_id = -1;
2965
2966			cfg80211_michael_mic_failure(usbdev->net,
2967							auth_req->bssid,
2968							key_type, key_id, NULL,
2969							GFP_KERNEL);
2970		}
2971
2972		buflen -= le32_to_cpu(auth_req->length);
2973		buf += le32_to_cpu(auth_req->length);
2974	}
2975}
2976
2977static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2978				struct ndis_80211_status_indication *indication,
2979				int len)
2980{
2981	struct ndis_80211_pmkid_cand_list *cand_list;
2982	int list_len, expected_len, i;
2983
2984	if (len < offsetof(struct ndis_80211_status_indication, u) +
2985				sizeof(struct ndis_80211_pmkid_cand_list)) {
2986		netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2987			    len);
2988		return;
2989	}
2990
2991	list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2992			sizeof(struct ndis_80211_pmkid_candidate);
2993	expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2994			offsetof(struct ndis_80211_status_indication, u);
2995
2996	if (len < expected_len) {
2997		netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2998			    len, expected_len);
2999		return;
3000	}
3001
3002	cand_list = &indication->u.cand_list;
3003
3004	netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
3005		    le32_to_cpu(cand_list->version),
3006		    le32_to_cpu(cand_list->num_candidates));
3007
3008	if (le32_to_cpu(cand_list->version) != 1)
3009		return;
3010
3011	for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3012		struct ndis_80211_pmkid_candidate *cand =
3013						&cand_list->candidate_list[i];
3014		bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3015
3016		netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3017			   i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3018
3019		cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3020						preauth, GFP_ATOMIC);
3021	}
3022}
3023
3024static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3025			struct rndis_indicate *msg, int buflen)
3026{
3027	struct ndis_80211_status_indication *indication;
3028	unsigned int len, offset;
3029
3030	offset = offsetof(struct rndis_indicate, status) +
3031			le32_to_cpu(msg->offset);
3032	len = le32_to_cpu(msg->length);
3033
3034	if (len < 8) {
3035		netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3036			    len);
3037		return;
3038	}
3039
3040	if (len > buflen || offset > buflen || offset + len > buflen) {
3041		netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3042			    offset + len, buflen);
3043		return;
3044	}
3045
3046	indication = (void *)((u8 *)msg + offset);
3047
3048	switch (le32_to_cpu(indication->status_type)) {
3049	case NDIS_80211_STATUSTYPE_RADIOSTATE:
3050		netdev_info(usbdev->net, "radio state indication: %i\n",
3051			    le32_to_cpu(indication->u.radio_status));
3052		return;
3053
3054	case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3055		netdev_info(usbdev->net, "media stream mode indication: %i\n",
3056			    le32_to_cpu(indication->u.media_stream_mode));
3057		return;
3058
3059	case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3060		rndis_wlan_auth_indication(usbdev, indication, len);
3061		return;
3062
3063	case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3064		rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3065		return;
3066
3067	default:
3068		netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3069			    le32_to_cpu(indication->status_type));
3070	}
3071}
3072
3073static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3074{
3075	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3076	struct rndis_indicate *msg = ind;
3077
3078	switch (le32_to_cpu(msg->status)) {
3079	case RNDIS_STATUS_MEDIA_CONNECT:
3080		if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3081			/* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3082			 * "media connect" indications which confuses driver
3083			 * and userspace to think that device is
3084			 * roaming/reassociating when it isn't.
3085			 */
3086			netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3087			return;
3088		}
3089
3090		usbnet_pause_rx(usbdev);
3091
3092		netdev_info(usbdev->net, "media connect\n");
3093
3094		/* queue work to avoid recursive calls into rndis_command */
3095		set_bit(WORK_LINK_UP, &priv->work_pending);
3096		queue_work(priv->workqueue, &priv->work);
3097		break;
3098
3099	case RNDIS_STATUS_MEDIA_DISCONNECT:
3100		netdev_info(usbdev->net, "media disconnect\n");
3101
3102		/* queue work to avoid recursive calls into rndis_command */
3103		set_bit(WORK_LINK_DOWN, &priv->work_pending);
3104		queue_work(priv->workqueue, &priv->work);
3105		break;
3106
3107	case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3108		rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3109		break;
3110
3111	default:
3112		netdev_info(usbdev->net, "indication: 0x%08x\n",
3113			    le32_to_cpu(msg->status));
3114		break;
3115	}
3116}
3117
3118static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3119{
3120	struct {
3121		__le32	num_items;
3122		__le32	items[8];
3123	} networks_supported;
3124	struct ndis_80211_capability *caps;
3125	u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3126	int len, retval, i, n;
3127	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3128
3129	/* determine supported modes */
3130	len = sizeof(networks_supported);
3131	retval = rndis_query_oid(usbdev,
3132				 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3133				 &networks_supported, &len);
3134	if (retval >= 0) {
3135		n = le32_to_cpu(networks_supported.num_items);
3136		if (n > 8)
3137			n = 8;
3138		for (i = 0; i < n; i++) {
3139			switch (le32_to_cpu(networks_supported.items[i])) {
3140			case NDIS_80211_TYPE_FREQ_HOP:
3141			case NDIS_80211_TYPE_DIRECT_SEQ:
3142				priv->caps |= CAP_MODE_80211B;
3143				break;
3144			case NDIS_80211_TYPE_OFDM_A:
3145				priv->caps |= CAP_MODE_80211A;
3146				break;
3147			case NDIS_80211_TYPE_OFDM_G:
3148				priv->caps |= CAP_MODE_80211G;
3149				break;
3150			}
3151		}
3152	}
3153
3154	/* get device 802.11 capabilities, number of PMKIDs */
3155	caps = (struct ndis_80211_capability *)caps_buf;
3156	len = sizeof(caps_buf);
3157	retval = rndis_query_oid(usbdev,
3158				 RNDIS_OID_802_11_CAPABILITY,
3159				 caps, &len);
3160	if (retval >= 0) {
3161		netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3162				"ver %d, pmkids %d, auth-encr-pairs %d\n",
3163				le32_to_cpu(caps->length),
3164				le32_to_cpu(caps->version),
3165				le32_to_cpu(caps->num_pmkids),
3166				le32_to_cpu(caps->num_auth_encr_pair));
3167		wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3168	} else
3169		wiphy->max_num_pmkids = 0;
3170
3171	return retval;
3172}
3173
3174static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3175{
3176	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3177	enum nl80211_cqm_rssi_threshold_event event;
3178	int thold, hyst, last_event;
3179
3180	if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3181		return;
3182	if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3183		return;
3184
3185	last_event = priv->last_cqm_event_rssi;
3186	thold = priv->cqm_rssi_thold;
3187	hyst = priv->cqm_rssi_hyst;
3188
3189	if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3190		event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3191	else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3192		event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3193	else
3194		return;
3195
3196	priv->last_cqm_event_rssi = rssi;
3197	cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3198}
3199
3200#define DEVICE_POLLER_JIFFIES (HZ)
3201static void rndis_device_poller(struct work_struct *work)
3202{
3203	struct rndis_wlan_private *priv =
3204		container_of(work, struct rndis_wlan_private,
3205							dev_poller_work.work);
3206	struct usbnet *usbdev = priv->usbdev;
3207	__le32 rssi, tmp;
3208	int len, ret, j;
3209	int update_jiffies = DEVICE_POLLER_JIFFIES;
3210	void *buf;
3211
3212	/* Only check/do workaround when connected. Calling is_associated()
3213	 * also polls device with rndis_command() and catches for media link
3214	 * indications.
3215	 */
3216	if (!is_associated(usbdev)) {
3217		/* Workaround bad scanning in BCM4320a devices with active
3218		 * background scanning when not associated.
3219		 */
3220		if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3221		    !priv->scan_request) {
3222			/* Get previous scan results */
3223			rndis_check_bssid_list(usbdev, NULL, NULL);
3224
3225			/* Initiate new scan */
3226			rndis_start_bssid_list_scan(usbdev);
3227		}
3228
3229		goto end;
3230	}
3231
3232	len = sizeof(rssi);
3233	ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3234			      &rssi, &len);
3235	if (ret == 0) {
3236		priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3237		rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3238	}
3239
3240	netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3241		   ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3242
3243	/* Workaround transfer stalls on poor quality links.
3244	 * TODO: find right way to fix these stalls (as stalls do not happen
3245	 * with ndiswrapper/windows driver). */
3246	if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3247		/* Decrease stats worker interval to catch stalls.
3248		 * faster. Faster than 400-500ms causes packet loss,
3249		 * Slower doesn't catch stalls fast enough.
3250		 */
3251		j = msecs_to_jiffies(priv->param_workaround_interval);
3252		if (j > DEVICE_POLLER_JIFFIES)
3253			j = DEVICE_POLLER_JIFFIES;
3254		else if (j <= 0)
3255			j = 1;
3256		update_jiffies = j;
3257
3258		/* Send scan OID. Use of both OIDs is required to get device
3259		 * working.
3260		 */
3261		tmp = cpu_to_le32(1);
3262		rndis_set_oid(usbdev,
3263			      RNDIS_OID_802_11_BSSID_LIST_SCAN,
3264			      &tmp, sizeof(tmp));
3265
3266		len = CONTROL_BUFFER_SIZE;
3267		buf = kmalloc(len, GFP_KERNEL);
3268		if (!buf)
3269			goto end;
3270
3271		rndis_query_oid(usbdev,
3272				RNDIS_OID_802_11_BSSID_LIST,
3273				buf, &len);
3274		kfree(buf);
3275	}
3276
3277end:
3278	if (update_jiffies >= HZ)
3279		update_jiffies = round_jiffies_relative(update_jiffies);
3280	else {
3281		j = round_jiffies_relative(update_jiffies);
3282		if (abs(j - update_jiffies) <= 10)
3283			update_jiffies = j;
3284	}
3285
3286	queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3287								update_jiffies);
3288}
3289
3290/*
3291 * driver/device initialization
3292 */
3293static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3294{
3295	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3296
3297	priv->device_type = device_type;
3298
3299	priv->param_country[0] = modparam_country[0];
3300	priv->param_country[1] = modparam_country[1];
3301	priv->param_country[2] = 0;
3302	priv->param_frameburst   = modparam_frameburst;
3303	priv->param_afterburner  = modparam_afterburner;
3304	priv->param_power_save   = modparam_power_save;
3305	priv->param_power_output = modparam_power_output;
3306	priv->param_roamtrigger  = modparam_roamtrigger;
3307	priv->param_roamdelta    = modparam_roamdelta;
3308
3309	priv->param_country[0] = toupper(priv->param_country[0]);
3310	priv->param_country[1] = toupper(priv->param_country[1]);
3311	/* doesn't support EU as country code, use FI instead */
3312	if (!strcmp(priv->param_country, "EU"))
3313		strcpy(priv->param_country, "FI");
3314
3315	if (priv->param_power_save < 0)
3316		priv->param_power_save = 0;
3317	else if (priv->param_power_save > 2)
3318		priv->param_power_save = 2;
3319
3320	if (priv->param_power_output < 0)
3321		priv->param_power_output = 0;
3322	else if (priv->param_power_output > 3)
3323		priv->param_power_output = 3;
3324
3325	if (priv->param_roamtrigger < -80)
3326		priv->param_roamtrigger = -80;
3327	else if (priv->param_roamtrigger > -60)
3328		priv->param_roamtrigger = -60;
3329
3330	if (priv->param_roamdelta < 0)
3331		priv->param_roamdelta = 0;
3332	else if (priv->param_roamdelta > 2)
3333		priv->param_roamdelta = 2;
3334
3335	if (modparam_workaround_interval < 0)
3336		priv->param_workaround_interval = 500;
3337	else
3338		priv->param_workaround_interval = modparam_workaround_interval;
3339}
3340
3341static int unknown_early_init(struct usbnet *usbdev)
3342{
3343	/* copy module parameters for unknown so that iwconfig reports txpower
3344	 * and workaround parameter is copied to private structure correctly.
3345	 */
3346	rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3347
3348	/* This is unknown device, so do not try set configuration parameters.
3349	 */
3350
3351	return 0;
3352}
3353
3354static int bcm4320a_early_init(struct usbnet *usbdev)
3355{
3356	/* copy module parameters for bcm4320a so that iwconfig reports txpower
3357	 * and workaround parameter is copied to private structure correctly.
3358	 */
3359	rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3360
3361	/* bcm4320a doesn't handle configuration parameters well. Try
3362	 * set any and you get partially zeroed mac and broken device.
3363	 */
3364
3365	return 0;
3366}
3367
3368static int bcm4320b_early_init(struct usbnet *usbdev)
3369{
3370	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3371	char buf[8];
3372
3373	rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3374
3375	/* Early initialization settings, setting these won't have effect
3376	 * if called after generic_rndis_bind().
3377	 */
3378
3379	rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3380	rndis_set_config_parameter_str(usbdev, "FrameBursting",
3381					priv->param_frameburst ? "1" : "0");
3382	rndis_set_config_parameter_str(usbdev, "Afterburner",
3383					priv->param_afterburner ? "1" : "0");
3384	sprintf(buf, "%d", priv->param_power_save);
3385	rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3386	sprintf(buf, "%d", priv->param_power_output);
3387	rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3388	sprintf(buf, "%d", priv->param_roamtrigger);
3389	rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3390	sprintf(buf, "%d", priv->param_roamdelta);
3391	rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3392
3393	return 0;
3394}
3395
3396/* same as rndis_netdev_ops but with local multicast handler */
3397static const struct net_device_ops rndis_wlan_netdev_ops = {
3398	.ndo_open		= usbnet_open,
3399	.ndo_stop		= usbnet_stop,
3400	.ndo_start_xmit		= usbnet_start_xmit,
3401	.ndo_tx_timeout		= usbnet_tx_timeout,
3402	.ndo_get_stats64	= usbnet_get_stats64,
3403	.ndo_set_mac_address 	= eth_mac_addr,
3404	.ndo_validate_addr	= eth_validate_addr,
3405	.ndo_set_rx_mode	= rndis_wlan_set_multicast_list,
3406};
3407
3408static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3409{
3410	struct wiphy *wiphy;
3411	struct rndis_wlan_private *priv;
3412	int retval, len;
3413	__le32 tmp;
3414
3415	/* allocate wiphy and rndis private data
3416	 * NOTE: We only support a single virtual interface, so wiphy
3417	 * and wireless_dev are somewhat synonymous for this device.
3418	 */
3419	wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3420	if (!wiphy)
3421		return -ENOMEM;
3422
3423	priv = wiphy_priv(wiphy);
3424	usbdev->net->ieee80211_ptr = &priv->wdev;
3425	priv->wdev.wiphy = wiphy;
3426	priv->wdev.iftype = NL80211_IFTYPE_STATION;
3427
3428	/* These have to be initialized before calling generic_rndis_bind().
3429	 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3430	 */
3431	usbdev->driver_priv = priv;
3432	priv->usbdev = usbdev;
3433
3434	mutex_init(&priv->command_lock);
3435
3436	/* because rndis_command() sleeps we need to use workqueue */
3437	priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3438	if (!priv->workqueue) {
3439		wiphy_free(wiphy);
3440		return -ENOMEM;
3441	}
3442	INIT_WORK(&priv->work, rndis_wlan_worker);
3443	INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3444	INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3445
3446	/* try bind rndis_host */
3447	retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3448	if (retval < 0)
3449		goto fail;
3450
3451	/* generic_rndis_bind set packet filter to multicast_all+
3452	 * promisc mode which doesn't work well for our devices (device
3453	 * picks up rssi to closest station instead of to access point).
3454	 *
3455	 * rndis_host wants to avoid all OID as much as possible
3456	 * so do promisc/multicast handling in rndis_wlan.
3457	 */
3458	usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3459
3460	tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3461	retval = rndis_set_oid(usbdev,
3462			       RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3463			       &tmp, sizeof(tmp));
3464
3465	len = sizeof(tmp);
3466	retval = rndis_query_oid(usbdev,
3467				 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3468				 &tmp, &len);
3469	priv->multicast_size = le32_to_cpu(tmp);
3470	if (retval < 0 || priv->multicast_size < 0)
3471		priv->multicast_size = 0;
3472	if (priv->multicast_size > 0)
3473		usbdev->net->flags |= IFF_MULTICAST;
3474	else
3475		usbdev->net->flags &= ~IFF_MULTICAST;
3476
3477	/* fill-out wiphy structure and register w/ cfg80211 */
3478	memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3479	wiphy->privid = rndis_wiphy_privid;
3480	wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3481					| BIT(NL80211_IFTYPE_ADHOC);
3482	wiphy->max_scan_ssids = 1;
3483
3484	/* TODO: fill-out band/encr information based on priv->caps */
3485	rndis_wlan_get_caps(usbdev, wiphy);
3486
3487	memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3488	memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3489	priv->band.channels = priv->channels;
3490	priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3491	priv->band.bitrates = priv->rates;
3492	priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3493	wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3494	wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3495
3496	memcpy(priv->cipher_suites, rndis_cipher_suites,
3497						sizeof(rndis_cipher_suites));
3498	wiphy->cipher_suites = priv->cipher_suites;
3499	wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3500
3501	set_wiphy_dev(wiphy, &usbdev->udev->dev);
3502
3503	if (wiphy_register(wiphy)) {
3504		retval = -ENODEV;
3505		goto fail;
3506	}
3507
3508	set_default_iw_params(usbdev);
3509
3510	priv->power_mode = -1;
3511
3512	/* set default rts/frag */
3513	rndis_set_wiphy_params(wiphy,
3514			WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3515
3516	/* turn radio off on init */
3517	priv->radio_on = false;
3518	disassociate(usbdev, false);
3519	netif_carrier_off(usbdev->net);
3520
3521	return 0;
3522
3523fail:
3524	cancel_delayed_work_sync(&priv->dev_poller_work);
3525	cancel_delayed_work_sync(&priv->scan_work);
3526	cancel_work_sync(&priv->work);
3527	flush_workqueue(priv->workqueue);
3528	destroy_workqueue(priv->workqueue);
3529
3530	wiphy_free(wiphy);
3531	return retval;
3532}
3533
3534static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3535{
3536	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3537
3538	/* turn radio off */
3539	disassociate(usbdev, false);
3540
3541	cancel_delayed_work_sync(&priv->dev_poller_work);
3542	cancel_delayed_work_sync(&priv->scan_work);
3543	cancel_work_sync(&priv->work);
3544	flush_workqueue(priv->workqueue);
3545	destroy_workqueue(priv->workqueue);
3546
3547	rndis_unbind(usbdev, intf);
3548
3549	wiphy_unregister(priv->wdev.wiphy);
3550	wiphy_free(priv->wdev.wiphy);
3551}
3552
3553static int rndis_wlan_reset(struct usbnet *usbdev)
3554{
3555	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3556	int retval;
3557
3558	netdev_dbg(usbdev->net, "%s()\n", __func__);
3559
3560	retval = rndis_reset(usbdev);
3561	if (retval)
3562		netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3563
3564	/* rndis_reset cleared multicast list, so restore here.
3565	   (set_multicast_list() also turns on current packet filter) */
3566	set_multicast_list(usbdev);
3567
3568	queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3569		round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3570
3571	return deauthenticate(usbdev);
3572}
3573
3574static int rndis_wlan_stop(struct usbnet *usbdev)
3575{
3576	struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3577	int retval;
3578	__le32 filter;
3579
3580	netdev_dbg(usbdev->net, "%s()\n", __func__);
3581
3582	retval = disassociate(usbdev, false);
3583
3584	priv->work_pending = 0;
3585	cancel_delayed_work_sync(&priv->dev_poller_work);
3586	cancel_delayed_work_sync(&priv->scan_work);
3587	cancel_work_sync(&priv->work);
3588	flush_workqueue(priv->workqueue);
3589
3590	if (priv->scan_request) {
3591		struct cfg80211_scan_info info = {
3592			.aborted = true,
3593		};
3594
3595		cfg80211_scan_done(priv->scan_request, &info);
3596		priv->scan_request = NULL;
3597	}
3598
3599	/* Set current packet filter zero to block receiving data packets from
3600	   device. */
3601	filter = 0;
3602	rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3603								sizeof(filter));
3604
3605	return retval;
3606}
3607
3608static const struct driver_info	bcm4320b_info = {
3609	.description =	"Wireless RNDIS device, BCM4320b based",
3610	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3611				FLAG_AVOID_UNLINK_URBS,
3612	.bind =		rndis_wlan_bind,
3613	.unbind =	rndis_wlan_unbind,
3614	.status =	rndis_status,
3615	.rx_fixup =	rndis_rx_fixup,
3616	.tx_fixup =	rndis_tx_fixup,
3617	.reset =	rndis_wlan_reset,
3618	.stop =		rndis_wlan_stop,
3619	.early_init =	bcm4320b_early_init,
3620	.indication =	rndis_wlan_indication,
3621};
3622
3623static const struct driver_info	bcm4320a_info = {
3624	.description =	"Wireless RNDIS device, BCM4320a based",
3625	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3626				FLAG_AVOID_UNLINK_URBS,
3627	.bind =		rndis_wlan_bind,
3628	.unbind =	rndis_wlan_unbind,
3629	.status =	rndis_status,
3630	.rx_fixup =	rndis_rx_fixup,
3631	.tx_fixup =	rndis_tx_fixup,
3632	.reset =	rndis_wlan_reset,
3633	.stop =		rndis_wlan_stop,
3634	.early_init =	bcm4320a_early_init,
3635	.indication =	rndis_wlan_indication,
3636};
3637
3638static const struct driver_info rndis_wlan_info = {
3639	.description =	"Wireless RNDIS device",
3640	.flags =	FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3641				FLAG_AVOID_UNLINK_URBS,
3642	.bind =		rndis_wlan_bind,
3643	.unbind =	rndis_wlan_unbind,
3644	.status =	rndis_status,
3645	.rx_fixup =	rndis_rx_fixup,
3646	.tx_fixup =	rndis_tx_fixup,
3647	.reset =	rndis_wlan_reset,
3648	.stop =		rndis_wlan_stop,
3649	.early_init =	unknown_early_init,
3650	.indication =	rndis_wlan_indication,
3651};
3652
3653/*-------------------------------------------------------------------------*/
3654
3655static const struct usb_device_id products [] = {
3656#define	RNDIS_MASTER_INTERFACE \
3657	.bInterfaceClass	= USB_CLASS_COMM, \
3658	.bInterfaceSubClass	= 2 /* ACM */, \
3659	.bInterfaceProtocol	= 0x0ff
3660
3661/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3662 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3663 */
3664{
3665	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3666			  | USB_DEVICE_ID_MATCH_DEVICE,
3667	.idVendor		= 0x0411,
3668	.idProduct		= 0x00bc,	/* Buffalo WLI-U2-KG125S */
3669	RNDIS_MASTER_INTERFACE,
3670	.driver_info		= (unsigned long) &bcm4320b_info,
3671}, {
3672	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3673			  | USB_DEVICE_ID_MATCH_DEVICE,
3674	.idVendor		= 0x0baf,
3675	.idProduct		= 0x011b,	/* U.S. Robotics USR5421 */
3676	RNDIS_MASTER_INTERFACE,
3677	.driver_info		= (unsigned long) &bcm4320b_info,
3678}, {
3679	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3680			  | USB_DEVICE_ID_MATCH_DEVICE,
3681	.idVendor		= 0x050d,
3682	.idProduct		= 0x011b,	/* Belkin F5D7051 */
3683	RNDIS_MASTER_INTERFACE,
3684	.driver_info		= (unsigned long) &bcm4320b_info,
3685}, {
3686	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3687			  | USB_DEVICE_ID_MATCH_DEVICE,
3688	.idVendor		= 0x1799,	/* Belkin has two vendor ids */
3689	.idProduct		= 0x011b,	/* Belkin F5D7051 */
3690	RNDIS_MASTER_INTERFACE,
3691	.driver_info		= (unsigned long) &bcm4320b_info,
3692}, {
3693	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3694			  | USB_DEVICE_ID_MATCH_DEVICE,
3695	.idVendor		= 0x13b1,
3696	.idProduct		= 0x0014,	/* Linksys WUSB54GSv2 */
3697	RNDIS_MASTER_INTERFACE,
3698	.driver_info		= (unsigned long) &bcm4320b_info,
3699}, {
3700	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3701			  | USB_DEVICE_ID_MATCH_DEVICE,
3702	.idVendor		= 0x13b1,
3703	.idProduct		= 0x0026,	/* Linksys WUSB54GSC */
3704	RNDIS_MASTER_INTERFACE,
3705	.driver_info		= (unsigned long) &bcm4320b_info,
3706}, {
3707	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3708			  | USB_DEVICE_ID_MATCH_DEVICE,
3709	.idVendor		= 0x0b05,
3710	.idProduct		= 0x1717,	/* Asus WL169gE */
3711	RNDIS_MASTER_INTERFACE,
3712	.driver_info		= (unsigned long) &bcm4320b_info,
3713}, {
3714	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3715			  | USB_DEVICE_ID_MATCH_DEVICE,
3716	.idVendor		= 0x0a5c,
3717	.idProduct		= 0xd11b,	/* Eminent EM4045 */
3718	RNDIS_MASTER_INTERFACE,
3719	.driver_info		= (unsigned long) &bcm4320b_info,
3720}, {
3721	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3722			  | USB_DEVICE_ID_MATCH_DEVICE,
3723	.idVendor		= 0x1690,
3724	.idProduct		= 0x0715,	/* BT Voyager 1055 */
3725	RNDIS_MASTER_INTERFACE,
3726	.driver_info		= (unsigned long) &bcm4320b_info,
3727},
3728/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3729 * parameters available, hardware probably contain older firmware version with
3730 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3731 */
3732{
3733	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3734			  | USB_DEVICE_ID_MATCH_DEVICE,
3735	.idVendor		= 0x13b1,
3736	.idProduct		= 0x000e,	/* Linksys WUSB54GSv1 */
3737	RNDIS_MASTER_INTERFACE,
3738	.driver_info		= (unsigned long) &bcm4320a_info,
3739}, {
3740	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3741			  | USB_DEVICE_ID_MATCH_DEVICE,
3742	.idVendor		= 0x0baf,
3743	.idProduct		= 0x0111,	/* U.S. Robotics USR5420 */
3744	RNDIS_MASTER_INTERFACE,
3745	.driver_info		= (unsigned long) &bcm4320a_info,
3746}, {
3747	.match_flags	=   USB_DEVICE_ID_MATCH_INT_INFO
3748			  | USB_DEVICE_ID_MATCH_DEVICE,
3749	.idVendor		= 0x0411,
3750	.idProduct		= 0x004b,	/* BUFFALO WLI-USB-G54 */
3751	RNDIS_MASTER_INTERFACE,
3752	.driver_info		= (unsigned long) &bcm4320a_info,
3753},
3754/* Generic Wireless RNDIS devices that we don't have exact
3755 * idVendor/idProduct/chip yet.
3756 */
3757{
3758	/* RNDIS is MSFT's un-official variant of CDC ACM */
3759	USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3760	.driver_info = (unsigned long) &rndis_wlan_info,
3761}, {
3762	/* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3763	USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3764	.driver_info = (unsigned long) &rndis_wlan_info,
3765},
3766	{ },		// END
3767};
3768MODULE_DEVICE_TABLE(usb, products);
3769
3770static struct usb_driver rndis_wlan_driver = {
3771	.name =		"rndis_wlan",
3772	.id_table =	products,
3773	.probe =	usbnet_probe,
3774	.disconnect =	usbnet_disconnect,
3775	.suspend =	usbnet_suspend,
3776	.resume =	usbnet_resume,
3777	.disable_hub_initiated_lpm = 1,
3778};
3779
3780module_usb_driver(rndis_wlan_driver);
3781
3782MODULE_AUTHOR("Bjorge Dijkstra");
3783MODULE_AUTHOR("Jussi Kivilinna");
3784MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3785MODULE_LICENSE("GPL");
3786