rndis_wlan: remove wireless extensions inclusions
[linux-2.6.git] / drivers / net / wireless / rndis_wlan.c
1 /*
2  * Driver for RNDIS based wireless USB devices.
3  *
4  * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
5  * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License as published by
9  * the Free Software Foundation; either version 2 of the License, or
10  * (at your option) any later version.
11  *
12  * This program is distributed in the hope that it will be useful,
13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
15  * GNU General Public License for more details.
16  *
17  * You should have received a copy of the GNU General Public License
18  * along with this program; if not, write to the Free Software
19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
20  *
21  *  Portions of this file are based on NDISwrapper project,
22  *  Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
23  *  http://ndiswrapper.sourceforge.net/
24  */
25
26 // #define      DEBUG                   // error path messages, extra info
27 // #define      VERBOSE                 // more; success messages
28
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/netdevice.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/workqueue.h>
35 #include <linux/mutex.h>
36 #include <linux/mii.h>
37 #include <linux/usb.h>
38 #include <linux/usb/cdc.h>
39 #include <linux/ieee80211.h>
40 #include <linux/if_arp.h>
41 #include <linux/ctype.h>
42 #include <linux/spinlock.h>
43 #include <linux/slab.h>
44 #include <net/cfg80211.h>
45 #include <linux/usb/usbnet.h>
46 #include <linux/usb/rndis_host.h>
47
48
49 /* NOTE: All these are settings for Broadcom chipset */
50 static char modparam_country[4] = "EU";
51 module_param_string(country, modparam_country, 4, 0444);
52 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
53
54 static int modparam_frameburst = 1;
55 module_param_named(frameburst, modparam_frameburst, int, 0444);
56 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
57
58 static int modparam_afterburner = 0;
59 module_param_named(afterburner, modparam_afterburner, int, 0444);
60 MODULE_PARM_DESC(afterburner,
61         "enable afterburner aka '125 High Speed Mode' (default: off)");
62
63 static int modparam_power_save = 0;
64 module_param_named(power_save, modparam_power_save, int, 0444);
65 MODULE_PARM_DESC(power_save,
66         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
67
68 static int modparam_power_output = 3;
69 module_param_named(power_output, modparam_power_output, int, 0444);
70 MODULE_PARM_DESC(power_output,
71         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
72
73 static int modparam_roamtrigger = -70;
74 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
75 MODULE_PARM_DESC(roamtrigger,
76         "set roaming dBm trigger: -80=optimize for distance, "
77                                 "-60=bandwidth (default: -70)");
78
79 static int modparam_roamdelta = 1;
80 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
81 MODULE_PARM_DESC(roamdelta,
82         "set roaming tendency: 0=aggressive, 1=moderate, "
83                                 "2=conservative (default: moderate)");
84
85 static int modparam_workaround_interval;
86 module_param_named(workaround_interval, modparam_workaround_interval,
87                                                         int, 0444);
88 MODULE_PARM_DESC(workaround_interval,
89         "set stall workaround interval in msecs (0=disabled) (default: 0)");
90
91
92 /* various RNDIS OID defs */
93 #define OID_GEN_LINK_SPEED                      cpu_to_le32(0x00010107)
94 #define OID_GEN_RNDIS_CONFIG_PARAMETER          cpu_to_le32(0x0001021b)
95
96 #define OID_GEN_XMIT_OK                         cpu_to_le32(0x00020101)
97 #define OID_GEN_RCV_OK                          cpu_to_le32(0x00020102)
98 #define OID_GEN_XMIT_ERROR                      cpu_to_le32(0x00020103)
99 #define OID_GEN_RCV_ERROR                       cpu_to_le32(0x00020104)
100 #define OID_GEN_RCV_NO_BUFFER                   cpu_to_le32(0x00020105)
101
102 #define OID_802_3_CURRENT_ADDRESS               cpu_to_le32(0x01010102)
103 #define OID_802_3_MULTICAST_LIST                cpu_to_le32(0x01010103)
104 #define OID_802_3_MAXIMUM_LIST_SIZE             cpu_to_le32(0x01010104)
105
106 #define OID_802_11_BSSID                        cpu_to_le32(0x0d010101)
107 #define OID_802_11_SSID                         cpu_to_le32(0x0d010102)
108 #define OID_802_11_INFRASTRUCTURE_MODE          cpu_to_le32(0x0d010108)
109 #define OID_802_11_ADD_WEP                      cpu_to_le32(0x0d010113)
110 #define OID_802_11_REMOVE_WEP                   cpu_to_le32(0x0d010114)
111 #define OID_802_11_DISASSOCIATE                 cpu_to_le32(0x0d010115)
112 #define OID_802_11_AUTHENTICATION_MODE          cpu_to_le32(0x0d010118)
113 #define OID_802_11_PRIVACY_FILTER               cpu_to_le32(0x0d010119)
114 #define OID_802_11_BSSID_LIST_SCAN              cpu_to_le32(0x0d01011a)
115 #define OID_802_11_ENCRYPTION_STATUS            cpu_to_le32(0x0d01011b)
116 #define OID_802_11_ADD_KEY                      cpu_to_le32(0x0d01011d)
117 #define OID_802_11_REMOVE_KEY                   cpu_to_le32(0x0d01011e)
118 #define OID_802_11_ASSOCIATION_INFORMATION      cpu_to_le32(0x0d01011f)
119 #define OID_802_11_CAPABILITY                   cpu_to_le32(0x0d010122)
120 #define OID_802_11_PMKID                        cpu_to_le32(0x0d010123)
121 #define OID_802_11_NETWORK_TYPES_SUPPORTED      cpu_to_le32(0x0d010203)
122 #define OID_802_11_NETWORK_TYPE_IN_USE          cpu_to_le32(0x0d010204)
123 #define OID_802_11_TX_POWER_LEVEL               cpu_to_le32(0x0d010205)
124 #define OID_802_11_RSSI                         cpu_to_le32(0x0d010206)
125 #define OID_802_11_RSSI_TRIGGER                 cpu_to_le32(0x0d010207)
126 #define OID_802_11_FRAGMENTATION_THRESHOLD      cpu_to_le32(0x0d010209)
127 #define OID_802_11_RTS_THRESHOLD                cpu_to_le32(0x0d01020a)
128 #define OID_802_11_SUPPORTED_RATES              cpu_to_le32(0x0d01020e)
129 #define OID_802_11_CONFIGURATION                cpu_to_le32(0x0d010211)
130 #define OID_802_11_POWER_MODE                   cpu_to_le32(0x0d010216)
131 #define OID_802_11_BSSID_LIST                   cpu_to_le32(0x0d010217)
132
133
134 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
135 #define WL_NOISE        -96     /* typical noise level in dBm */
136 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
137
138
139 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
140  * based on wireless rndis) has default txpower of 13dBm.
141  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
142  *  100% : 20 mW ~ 13dBm
143  *   75% : 15 mW ~ 12dBm
144  *   50% : 10 mW ~ 10dBm
145  *   25% :  5 mW ~  7dBm
146  */
147 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
148 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
149 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
150 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
151
152
153 /* codes for "status" field of completion messages */
154 #define RNDIS_STATUS_ADAPTER_NOT_READY          cpu_to_le32(0xc0010011)
155 #define RNDIS_STATUS_ADAPTER_NOT_OPEN           cpu_to_le32(0xc0010012)
156
157
158 /* Known device types */
159 #define RNDIS_UNKNOWN   0
160 #define RNDIS_BCM4320A  1
161 #define RNDIS_BCM4320B  2
162
163
164 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
165  * slightly modified for datatype endianess, etc
166  */
167 #define NDIS_802_11_LENGTH_SSID 32
168 #define NDIS_802_11_LENGTH_RATES 8
169 #define NDIS_802_11_LENGTH_RATES_EX 16
170
171 enum ndis_80211_net_type {
172         NDIS_80211_TYPE_FREQ_HOP,
173         NDIS_80211_TYPE_DIRECT_SEQ,
174         NDIS_80211_TYPE_OFDM_A,
175         NDIS_80211_TYPE_OFDM_G
176 };
177
178 enum ndis_80211_net_infra {
179         NDIS_80211_INFRA_ADHOC,
180         NDIS_80211_INFRA_INFRA,
181         NDIS_80211_INFRA_AUTO_UNKNOWN
182 };
183
184 enum ndis_80211_auth_mode {
185         NDIS_80211_AUTH_OPEN,
186         NDIS_80211_AUTH_SHARED,
187         NDIS_80211_AUTH_AUTO_SWITCH,
188         NDIS_80211_AUTH_WPA,
189         NDIS_80211_AUTH_WPA_PSK,
190         NDIS_80211_AUTH_WPA_NONE,
191         NDIS_80211_AUTH_WPA2,
192         NDIS_80211_AUTH_WPA2_PSK
193 };
194
195 enum ndis_80211_encr_status {
196         NDIS_80211_ENCR_WEP_ENABLED,
197         NDIS_80211_ENCR_DISABLED,
198         NDIS_80211_ENCR_WEP_KEY_ABSENT,
199         NDIS_80211_ENCR_NOT_SUPPORTED,
200         NDIS_80211_ENCR_TKIP_ENABLED,
201         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
202         NDIS_80211_ENCR_CCMP_ENABLED,
203         NDIS_80211_ENCR_CCMP_KEY_ABSENT
204 };
205
206 enum ndis_80211_priv_filter {
207         NDIS_80211_PRIV_ACCEPT_ALL,
208         NDIS_80211_PRIV_8021X_WEP
209 };
210
211 enum ndis_80211_status_type {
212         NDIS_80211_STATUSTYPE_AUTHENTICATION,
213         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
214         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
215         NDIS_80211_STATUSTYPE_RADIOSTATE,
216 };
217
218 enum ndis_80211_media_stream_mode {
219         NDIS_80211_MEDIA_STREAM_OFF,
220         NDIS_80211_MEDIA_STREAM_ON
221 };
222
223 enum ndis_80211_radio_status {
224         NDIS_80211_RADIO_STATUS_ON,
225         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
226         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
227 };
228
229 enum ndis_80211_addkey_bits {
230         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
231         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
232         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
233         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
234 };
235
236 enum ndis_80211_addwep_bits {
237         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
238         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
239 };
240
241 enum ndis_80211_power_mode {
242         NDIS_80211_POWER_MODE_CAM,
243         NDIS_80211_POWER_MODE_MAX_PSP,
244         NDIS_80211_POWER_MODE_FAST_PSP,
245 };
246
247 struct ndis_80211_auth_request {
248         __le32 length;
249         u8 bssid[6];
250         u8 padding[2];
251         __le32 flags;
252 } __packed;
253
254 struct ndis_80211_pmkid_candidate {
255         u8 bssid[6];
256         u8 padding[2];
257         __le32 flags;
258 } __packed;
259
260 struct ndis_80211_pmkid_cand_list {
261         __le32 version;
262         __le32 num_candidates;
263         struct ndis_80211_pmkid_candidate candidate_list[0];
264 } __packed;
265
266 struct ndis_80211_status_indication {
267         __le32 status_type;
268         union {
269                 __le32                                  media_stream_mode;
270                 __le32                                  radio_status;
271                 struct ndis_80211_auth_request          auth_request[0];
272                 struct ndis_80211_pmkid_cand_list       cand_list;
273         } u;
274 } __packed;
275
276 struct ndis_80211_ssid {
277         __le32 length;
278         u8 essid[NDIS_802_11_LENGTH_SSID];
279 } __packed;
280
281 struct ndis_80211_conf_freq_hop {
282         __le32 length;
283         __le32 hop_pattern;
284         __le32 hop_set;
285         __le32 dwell_time;
286 } __packed;
287
288 struct ndis_80211_conf {
289         __le32 length;
290         __le32 beacon_period;
291         __le32 atim_window;
292         __le32 ds_config;
293         struct ndis_80211_conf_freq_hop fh_config;
294 } __packed;
295
296 struct ndis_80211_bssid_ex {
297         __le32 length;
298         u8 mac[6];
299         u8 padding[2];
300         struct ndis_80211_ssid ssid;
301         __le32 privacy;
302         __le32 rssi;
303         __le32 net_type;
304         struct ndis_80211_conf config;
305         __le32 net_infra;
306         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
307         __le32 ie_length;
308         u8 ies[0];
309 } __packed;
310
311 struct ndis_80211_bssid_list_ex {
312         __le32 num_items;
313         struct ndis_80211_bssid_ex bssid[0];
314 } __packed;
315
316 struct ndis_80211_fixed_ies {
317         u8 timestamp[8];
318         __le16 beacon_interval;
319         __le16 capabilities;
320 } __packed;
321
322 struct ndis_80211_wep_key {
323         __le32 size;
324         __le32 index;
325         __le32 length;
326         u8 material[32];
327 } __packed;
328
329 struct ndis_80211_key {
330         __le32 size;
331         __le32 index;
332         __le32 length;
333         u8 bssid[6];
334         u8 padding[6];
335         u8 rsc[8];
336         u8 material[32];
337 } __packed;
338
339 struct ndis_80211_remove_key {
340         __le32 size;
341         __le32 index;
342         u8 bssid[6];
343         u8 padding[2];
344 } __packed;
345
346 struct ndis_config_param {
347         __le32 name_offs;
348         __le32 name_length;
349         __le32 type;
350         __le32 value_offs;
351         __le32 value_length;
352 } __packed;
353
354 struct ndis_80211_assoc_info {
355         __le32 length;
356         __le16 req_ies;
357         struct req_ie {
358                 __le16 capa;
359                 __le16 listen_interval;
360                 u8 cur_ap_address[6];
361         } req_ie;
362         __le32 req_ie_length;
363         __le32 offset_req_ies;
364         __le16 resp_ies;
365         struct resp_ie {
366                 __le16 capa;
367                 __le16 status_code;
368                 __le16 assoc_id;
369         } resp_ie;
370         __le32 resp_ie_length;
371         __le32 offset_resp_ies;
372 } __packed;
373
374 struct ndis_80211_auth_encr_pair {
375         __le32 auth_mode;
376         __le32 encr_mode;
377 } __packed;
378
379 struct ndis_80211_capability {
380         __le32 length;
381         __le32 version;
382         __le32 num_pmkids;
383         __le32 num_auth_encr_pair;
384         struct ndis_80211_auth_encr_pair auth_encr_pair[0];
385 } __packed;
386
387 struct ndis_80211_bssid_info {
388         u8 bssid[6];
389         u8 pmkid[16];
390 };
391
392 struct ndis_80211_pmkid {
393         __le32 length;
394         __le32 bssid_info_count;
395         struct ndis_80211_bssid_info bssid_info[0];
396 };
397
398 /*
399  *  private data
400  */
401 #define NET_TYPE_11FB   0
402
403 #define CAP_MODE_80211A         1
404 #define CAP_MODE_80211B         2
405 #define CAP_MODE_80211G         4
406 #define CAP_MODE_MASK           7
407
408 #define WORK_LINK_UP            (1<<0)
409 #define WORK_LINK_DOWN          (1<<1)
410 #define WORK_SET_MULTICAST_LIST (1<<2)
411
412 #define RNDIS_WLAN_ALG_NONE     0
413 #define RNDIS_WLAN_ALG_WEP      (1<<0)
414 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
415 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
416
417 #define RNDIS_WLAN_KEY_MGMT_NONE        0
418 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
419 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
420
421 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
422
423 static const struct ieee80211_channel rndis_channels[] = {
424         { .center_freq = 2412 },
425         { .center_freq = 2417 },
426         { .center_freq = 2422 },
427         { .center_freq = 2427 },
428         { .center_freq = 2432 },
429         { .center_freq = 2437 },
430         { .center_freq = 2442 },
431         { .center_freq = 2447 },
432         { .center_freq = 2452 },
433         { .center_freq = 2457 },
434         { .center_freq = 2462 },
435         { .center_freq = 2467 },
436         { .center_freq = 2472 },
437         { .center_freq = 2484 },
438 };
439
440 static const struct ieee80211_rate rndis_rates[] = {
441         { .bitrate = 10 },
442         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
443         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
444         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
445         { .bitrate = 60 },
446         { .bitrate = 90 },
447         { .bitrate = 120 },
448         { .bitrate = 180 },
449         { .bitrate = 240 },
450         { .bitrate = 360 },
451         { .bitrate = 480 },
452         { .bitrate = 540 }
453 };
454
455 static const u32 rndis_cipher_suites[] = {
456         WLAN_CIPHER_SUITE_WEP40,
457         WLAN_CIPHER_SUITE_WEP104,
458         WLAN_CIPHER_SUITE_TKIP,
459         WLAN_CIPHER_SUITE_CCMP,
460 };
461
462 struct rndis_wlan_encr_key {
463         int len;
464         u32 cipher;
465         u8 material[32];
466         u8 bssid[ETH_ALEN];
467         bool pairwise;
468         bool tx_key;
469 };
470
471 /* RNDIS device private data */
472 struct rndis_wlan_private {
473         struct usbnet *usbdev;
474
475         struct wireless_dev wdev;
476
477         struct cfg80211_scan_request *scan_request;
478
479         struct workqueue_struct *workqueue;
480         struct delayed_work dev_poller_work;
481         struct delayed_work scan_work;
482         struct work_struct work;
483         struct mutex command_lock;
484         unsigned long work_pending;
485         int last_qual;
486         s32 cqm_rssi_thold;
487         u32 cqm_rssi_hyst;
488         int last_cqm_event_rssi;
489
490         struct ieee80211_supported_band band;
491         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
492         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
493         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
494
495         int device_type;
496         int caps;
497         int multicast_size;
498
499         /* module parameters */
500         char param_country[4];
501         int  param_frameburst;
502         int  param_afterburner;
503         int  param_power_save;
504         int  param_power_output;
505         int  param_roamtrigger;
506         int  param_roamdelta;
507         u32  param_workaround_interval;
508
509         /* hardware state */
510         bool radio_on;
511         int power_mode;
512         int infra_mode;
513         bool connected;
514         u8 bssid[ETH_ALEN];
515         __le32 current_command_oid;
516
517         /* encryption stuff */
518         int  encr_tx_key_index;
519         struct rndis_wlan_encr_key encr_keys[4];
520         int  wpa_version;
521
522         u8 command_buffer[COMMAND_BUFFER_SIZE];
523 };
524
525 /*
526  * cfg80211 ops
527  */
528 static int rndis_change_virtual_intf(struct wiphy *wiphy,
529                                         struct net_device *dev,
530                                         enum nl80211_iftype type, u32 *flags,
531                                         struct vif_params *params);
532
533 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
534                         struct cfg80211_scan_request *request);
535
536 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
537
538 static int rndis_set_tx_power(struct wiphy *wiphy,
539                               enum nl80211_tx_power_setting type,
540                               int mbm);
541 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
542
543 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
544                                 struct cfg80211_connect_params *sme);
545
546 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
547                                 u16 reason_code);
548
549 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
550                                         struct cfg80211_ibss_params *params);
551
552 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
553
554 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
555         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
556
557 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
558                          u8 key_index, bool pairwise, const u8 *mac_addr,
559                          struct key_params *params);
560
561 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
562                          u8 key_index, bool pairwise, const u8 *mac_addr);
563
564 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
565                                  u8 key_index, bool unicast, bool multicast);
566
567 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
568                                         u8 *mac, struct station_info *sinfo);
569
570 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
571                                int idx, u8 *mac, struct station_info *sinfo);
572
573 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
574                                 struct cfg80211_pmksa *pmksa);
575
576 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
577                                 struct cfg80211_pmksa *pmksa);
578
579 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
580
581 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
582                                 bool enabled, int timeout);
583
584 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
585                                         struct net_device *dev,
586                                         s32 rssi_thold, u32 rssi_hyst);
587
588 static const struct cfg80211_ops rndis_config_ops = {
589         .change_virtual_intf = rndis_change_virtual_intf,
590         .scan = rndis_scan,
591         .set_wiphy_params = rndis_set_wiphy_params,
592         .set_tx_power = rndis_set_tx_power,
593         .get_tx_power = rndis_get_tx_power,
594         .connect = rndis_connect,
595         .disconnect = rndis_disconnect,
596         .join_ibss = rndis_join_ibss,
597         .leave_ibss = rndis_leave_ibss,
598         .set_channel = rndis_set_channel,
599         .add_key = rndis_add_key,
600         .del_key = rndis_del_key,
601         .set_default_key = rndis_set_default_key,
602         .get_station = rndis_get_station,
603         .dump_station = rndis_dump_station,
604         .set_pmksa = rndis_set_pmksa,
605         .del_pmksa = rndis_del_pmksa,
606         .flush_pmksa = rndis_flush_pmksa,
607         .set_power_mgmt = rndis_set_power_mgmt,
608         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
609 };
610
611 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
612
613
614 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
615 {
616         return (struct rndis_wlan_private *)dev->driver_priv;
617 }
618
619 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
620 {
621         switch (priv->param_power_output) {
622         default:
623         case 3:
624                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
625         case 2:
626                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
627         case 1:
628                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
629         case 0:
630                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
631         }
632 }
633
634 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
635 {
636         int cipher = priv->encr_keys[idx].cipher;
637
638         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
639                 cipher == WLAN_CIPHER_SUITE_TKIP);
640 }
641
642 static int rndis_cipher_to_alg(u32 cipher)
643 {
644         switch (cipher) {
645         default:
646                 return RNDIS_WLAN_ALG_NONE;
647         case WLAN_CIPHER_SUITE_WEP40:
648         case WLAN_CIPHER_SUITE_WEP104:
649                 return RNDIS_WLAN_ALG_WEP;
650         case WLAN_CIPHER_SUITE_TKIP:
651                 return RNDIS_WLAN_ALG_TKIP;
652         case WLAN_CIPHER_SUITE_CCMP:
653                 return RNDIS_WLAN_ALG_CCMP;
654         }
655 }
656
657 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
658 {
659         switch (akm_suite) {
660         default:
661                 return RNDIS_WLAN_KEY_MGMT_NONE;
662         case WLAN_AKM_SUITE_8021X:
663                 return RNDIS_WLAN_KEY_MGMT_802_1X;
664         case WLAN_AKM_SUITE_PSK:
665                 return RNDIS_WLAN_KEY_MGMT_PSK;
666         }
667 }
668
669 #ifdef DEBUG
670 static const char *oid_to_string(__le32 oid)
671 {
672         switch (oid) {
673 #define OID_STR(oid) case oid: return(#oid)
674                 /* from rndis_host.h */
675                 OID_STR(OID_802_3_PERMANENT_ADDRESS);
676                 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
677                 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
678                 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
679
680                 /* from rndis_wlan.c */
681                 OID_STR(OID_GEN_LINK_SPEED);
682                 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
683
684                 OID_STR(OID_GEN_XMIT_OK);
685                 OID_STR(OID_GEN_RCV_OK);
686                 OID_STR(OID_GEN_XMIT_ERROR);
687                 OID_STR(OID_GEN_RCV_ERROR);
688                 OID_STR(OID_GEN_RCV_NO_BUFFER);
689
690                 OID_STR(OID_802_3_CURRENT_ADDRESS);
691                 OID_STR(OID_802_3_MULTICAST_LIST);
692                 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
693
694                 OID_STR(OID_802_11_BSSID);
695                 OID_STR(OID_802_11_SSID);
696                 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
697                 OID_STR(OID_802_11_ADD_WEP);
698                 OID_STR(OID_802_11_REMOVE_WEP);
699                 OID_STR(OID_802_11_DISASSOCIATE);
700                 OID_STR(OID_802_11_AUTHENTICATION_MODE);
701                 OID_STR(OID_802_11_PRIVACY_FILTER);
702                 OID_STR(OID_802_11_BSSID_LIST_SCAN);
703                 OID_STR(OID_802_11_ENCRYPTION_STATUS);
704                 OID_STR(OID_802_11_ADD_KEY);
705                 OID_STR(OID_802_11_REMOVE_KEY);
706                 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
707                 OID_STR(OID_802_11_CAPABILITY);
708                 OID_STR(OID_802_11_PMKID);
709                 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
710                 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
711                 OID_STR(OID_802_11_TX_POWER_LEVEL);
712                 OID_STR(OID_802_11_RSSI);
713                 OID_STR(OID_802_11_RSSI_TRIGGER);
714                 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
715                 OID_STR(OID_802_11_RTS_THRESHOLD);
716                 OID_STR(OID_802_11_SUPPORTED_RATES);
717                 OID_STR(OID_802_11_CONFIGURATION);
718                 OID_STR(OID_802_11_POWER_MODE);
719                 OID_STR(OID_802_11_BSSID_LIST);
720 #undef OID_STR
721         }
722
723         return "?";
724 }
725 #else
726 static const char *oid_to_string(__le32 oid)
727 {
728         return "?";
729 }
730 #endif
731
732 /* translate error code */
733 static int rndis_error_status(__le32 rndis_status)
734 {
735         int ret = -EINVAL;
736         switch (rndis_status) {
737         case RNDIS_STATUS_SUCCESS:
738                 ret = 0;
739                 break;
740         case RNDIS_STATUS_FAILURE:
741         case RNDIS_STATUS_INVALID_DATA:
742                 ret = -EINVAL;
743                 break;
744         case RNDIS_STATUS_NOT_SUPPORTED:
745                 ret = -EOPNOTSUPP;
746                 break;
747         case RNDIS_STATUS_ADAPTER_NOT_READY:
748         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
749                 ret = -EBUSY;
750                 break;
751         }
752         return ret;
753 }
754
755 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
756 {
757         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
758         union {
759                 void                    *buf;
760                 struct rndis_msg_hdr    *header;
761                 struct rndis_query      *get;
762                 struct rndis_query_c    *get_c;
763         } u;
764         int ret, buflen;
765         int resplen, respoffs, copylen;
766
767         buflen = *len + sizeof(*u.get);
768         if (buflen < CONTROL_BUFFER_SIZE)
769                 buflen = CONTROL_BUFFER_SIZE;
770
771         if (buflen > COMMAND_BUFFER_SIZE) {
772                 u.buf = kmalloc(buflen, GFP_KERNEL);
773                 if (!u.buf)
774                         return -ENOMEM;
775         } else {
776                 u.buf = priv->command_buffer;
777         }
778
779         mutex_lock(&priv->command_lock);
780
781         memset(u.get, 0, sizeof *u.get);
782         u.get->msg_type = RNDIS_MSG_QUERY;
783         u.get->msg_len = cpu_to_le32(sizeof *u.get);
784         u.get->oid = oid;
785
786         priv->current_command_oid = oid;
787         ret = rndis_command(dev, u.header, buflen);
788         priv->current_command_oid = 0;
789         if (ret < 0)
790                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
791                            __func__, oid_to_string(oid), ret,
792                            le32_to_cpu(u.get_c->status));
793
794         if (ret == 0) {
795                 resplen = le32_to_cpu(u.get_c->len);
796                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
797
798                 if (respoffs > buflen) {
799                         /* Device returned data offset outside buffer, error. */
800                         netdev_dbg(dev->net, "%s(%s): received invalid "
801                                 "data offset: %d > %d\n", __func__,
802                                 oid_to_string(oid), respoffs, buflen);
803
804                         ret = -EINVAL;
805                         goto exit_unlock;
806                 }
807
808                 if ((resplen + respoffs) > buflen) {
809                         /* Device would have returned more data if buffer would
810                          * have been big enough. Copy just the bits that we got.
811                          */
812                         copylen = buflen - respoffs;
813                 } else {
814                         copylen = resplen;
815                 }
816
817                 if (copylen > *len)
818                         copylen = *len;
819
820                 memcpy(data, u.buf + respoffs, copylen);
821
822                 *len = resplen;
823
824                 ret = rndis_error_status(u.get_c->status);
825                 if (ret < 0)
826                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
827                                    __func__, oid_to_string(oid),
828                                    le32_to_cpu(u.get_c->status), ret);
829         }
830
831 exit_unlock:
832         mutex_unlock(&priv->command_lock);
833
834         if (u.buf != priv->command_buffer)
835                 kfree(u.buf);
836         return ret;
837 }
838
839 static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
840                          int len)
841 {
842         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
843         union {
844                 void                    *buf;
845                 struct rndis_msg_hdr    *header;
846                 struct rndis_set        *set;
847                 struct rndis_set_c      *set_c;
848         } u;
849         int ret, buflen;
850
851         buflen = len + sizeof(*u.set);
852         if (buflen < CONTROL_BUFFER_SIZE)
853                 buflen = CONTROL_BUFFER_SIZE;
854
855         if (buflen > COMMAND_BUFFER_SIZE) {
856                 u.buf = kmalloc(buflen, GFP_KERNEL);
857                 if (!u.buf)
858                         return -ENOMEM;
859         } else {
860                 u.buf = priv->command_buffer;
861         }
862
863         mutex_lock(&priv->command_lock);
864
865         memset(u.set, 0, sizeof *u.set);
866         u.set->msg_type = RNDIS_MSG_SET;
867         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
868         u.set->oid = oid;
869         u.set->len = cpu_to_le32(len);
870         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
871         u.set->handle = cpu_to_le32(0);
872         memcpy(u.buf + sizeof(*u.set), data, len);
873
874         priv->current_command_oid = oid;
875         ret = rndis_command(dev, u.header, buflen);
876         priv->current_command_oid = 0;
877         if (ret < 0)
878                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
879                            __func__, oid_to_string(oid), ret,
880                            le32_to_cpu(u.set_c->status));
881
882         if (ret == 0) {
883                 ret = rndis_error_status(u.set_c->status);
884
885                 if (ret < 0)
886                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
887                                    __func__, oid_to_string(oid),
888                                    le32_to_cpu(u.set_c->status), ret);
889         }
890
891         mutex_unlock(&priv->command_lock);
892
893         if (u.buf != priv->command_buffer)
894                 kfree(u.buf);
895         return ret;
896 }
897
898 static int rndis_reset(struct usbnet *usbdev)
899 {
900         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
901         struct rndis_reset *reset;
902         int ret;
903
904         mutex_lock(&priv->command_lock);
905
906         reset = (void *)priv->command_buffer;
907         memset(reset, 0, sizeof(*reset));
908         reset->msg_type = RNDIS_MSG_RESET;
909         reset->msg_len = cpu_to_le32(sizeof(*reset));
910         priv->current_command_oid = 0;
911         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
912
913         mutex_unlock(&priv->command_lock);
914
915         if (ret < 0)
916                 return ret;
917         return 0;
918 }
919
920 /*
921  * Specs say that we can only set config parameters only soon after device
922  * initialization.
923  *   value_type: 0 = u32, 2 = unicode string
924  */
925 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
926                                                 int value_type, void *value)
927 {
928         struct ndis_config_param *infobuf;
929         int value_len, info_len, param_len, ret, i;
930         __le16 *unibuf;
931         __le32 *dst_value;
932
933         if (value_type == 0)
934                 value_len = sizeof(__le32);
935         else if (value_type == 2)
936                 value_len = strlen(value) * sizeof(__le16);
937         else
938                 return -EINVAL;
939
940         param_len = strlen(param) * sizeof(__le16);
941         info_len = sizeof(*infobuf) + param_len + value_len;
942
943 #ifdef DEBUG
944         info_len += 12;
945 #endif
946         infobuf = kmalloc(info_len, GFP_KERNEL);
947         if (!infobuf)
948                 return -ENOMEM;
949
950 #ifdef DEBUG
951         info_len -= 12;
952         /* extra 12 bytes are for padding (debug output) */
953         memset(infobuf, 0xCC, info_len + 12);
954 #endif
955
956         if (value_type == 2)
957                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
958                            param, (u8 *)value);
959         else
960                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
961                            param, *(u32 *)value);
962
963         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
964         infobuf->name_length = cpu_to_le32(param_len);
965         infobuf->type = cpu_to_le32(value_type);
966         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
967         infobuf->value_length = cpu_to_le32(value_len);
968
969         /* simple string to unicode string conversion */
970         unibuf = (void *)infobuf + sizeof(*infobuf);
971         for (i = 0; i < param_len / sizeof(__le16); i++)
972                 unibuf[i] = cpu_to_le16(param[i]);
973
974         if (value_type == 2) {
975                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
976                 for (i = 0; i < value_len / sizeof(__le16); i++)
977                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
978         } else {
979                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
980                 *dst_value = cpu_to_le32(*(u32 *)value);
981         }
982
983 #ifdef DEBUG
984         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
985         for (i = 0; i < info_len; i += 12) {
986                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
987                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
988                            cpu_to_be32(tmp[0]),
989                            cpu_to_be32(tmp[1]),
990                            cpu_to_be32(tmp[2]));
991         }
992 #endif
993
994         ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
995                                                         infobuf, info_len);
996         if (ret != 0)
997                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
998                            ret);
999
1000         kfree(infobuf);
1001         return ret;
1002 }
1003
1004 static int rndis_set_config_parameter_str(struct usbnet *dev,
1005                                                 char *param, char *value)
1006 {
1007         return rndis_set_config_parameter(dev, param, 2, value);
1008 }
1009
1010 /*
1011  * data conversion functions
1012  */
1013 static int level_to_qual(int level)
1014 {
1015         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
1016         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
1017 }
1018
1019 /*
1020  * common functions
1021  */
1022 static int set_infra_mode(struct usbnet *usbdev, int mode);
1023 static void restore_keys(struct usbnet *usbdev);
1024 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1025                                         bool *matched);
1026
1027 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1028 {
1029         __le32 tmp;
1030
1031         /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1032         tmp = cpu_to_le32(1);
1033         return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1034                                                         sizeof(tmp));
1035 }
1036
1037 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1038 {
1039         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1040         int ret;
1041
1042         ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1043         if (ret < 0) {
1044                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1045                 return ret;
1046         }
1047         if (ret == 0) {
1048                 priv->radio_on = true;
1049                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1050         }
1051
1052         return ret;
1053 }
1054
1055 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1056 {
1057         int ret;
1058
1059         ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1060         if (ret < 0) {
1061                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1062                             bssid, ret);
1063                 return ret;
1064         }
1065
1066         return ret;
1067 }
1068
1069 static int clear_bssid(struct usbnet *usbdev)
1070 {
1071         static const u8 broadcast_mac[ETH_ALEN] = {
1072                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1073         };
1074
1075         return set_bssid(usbdev, broadcast_mac);
1076 }
1077
1078 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1079 {
1080         int ret, len;
1081
1082         len = ETH_ALEN;
1083         ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1084
1085         if (ret != 0)
1086                 memset(bssid, 0, ETH_ALEN);
1087
1088         return ret;
1089 }
1090
1091 static int get_association_info(struct usbnet *usbdev,
1092                         struct ndis_80211_assoc_info *info, int len)
1093 {
1094         return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1095                                 info, &len);
1096 }
1097
1098 static bool is_associated(struct usbnet *usbdev)
1099 {
1100         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1101         u8 bssid[ETH_ALEN];
1102         int ret;
1103
1104         if (!priv->radio_on)
1105                 return false;
1106
1107         ret = get_bssid(usbdev, bssid);
1108
1109         return (ret == 0 && !is_zero_ether_addr(bssid));
1110 }
1111
1112 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1113 {
1114         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1115         struct ndis_80211_ssid ssid;
1116         int i, ret = 0;
1117
1118         if (priv->radio_on) {
1119                 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1120                 if (ret == 0) {
1121                         priv->radio_on = false;
1122                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1123                                    __func__);
1124
1125                         if (reset_ssid)
1126                                 msleep(100);
1127                 }
1128         }
1129
1130         /* disassociate causes radio to be turned off; if reset_ssid
1131          * is given, set random ssid to enable radio */
1132         if (reset_ssid) {
1133                 /* Set device to infrastructure mode so we don't get ad-hoc
1134                  * 'media connect' indications with the random ssid.
1135                  */
1136                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1137
1138                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1139                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1140                 ssid.essid[0] = 0x1;
1141                 ssid.essid[1] = 0xff;
1142                 for (i = 2; i < sizeof(ssid.essid); i++)
1143                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1144                 ret = set_essid(usbdev, &ssid);
1145         }
1146         return ret;
1147 }
1148
1149 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1150                                 enum nl80211_auth_type auth_type, int keymgmt)
1151 {
1152         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1153         __le32 tmp;
1154         int auth_mode, ret;
1155
1156         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1157                    __func__, wpa_version, auth_type, keymgmt);
1158
1159         if (wpa_version & NL80211_WPA_VERSION_2) {
1160                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1161                         auth_mode = NDIS_80211_AUTH_WPA2;
1162                 else
1163                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1164         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1165                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1166                         auth_mode = NDIS_80211_AUTH_WPA;
1167                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1168                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1169                 else
1170                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1171         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1172                 auth_mode = NDIS_80211_AUTH_SHARED;
1173         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1174                 auth_mode = NDIS_80211_AUTH_OPEN;
1175         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1176                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1177         else
1178                 return -ENOTSUPP;
1179
1180         tmp = cpu_to_le32(auth_mode);
1181         ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1182                                                                 sizeof(tmp));
1183         if (ret != 0) {
1184                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1185                             ret);
1186                 return ret;
1187         }
1188
1189         priv->wpa_version = wpa_version;
1190
1191         return 0;
1192 }
1193
1194 static int set_priv_filter(struct usbnet *usbdev)
1195 {
1196         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1197         __le32 tmp;
1198
1199         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1200                    __func__, priv->wpa_version);
1201
1202         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1203             priv->wpa_version & NL80211_WPA_VERSION_1)
1204                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1205         else
1206                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1207
1208         return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1209                                                                 sizeof(tmp));
1210 }
1211
1212 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1213 {
1214         __le32 tmp;
1215         int encr_mode, ret;
1216
1217         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1218                    __func__, pairwise, groupwise);
1219
1220         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1221                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1222         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1223                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1224         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1225                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1226         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1227                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1228         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1229                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1230         else
1231                 encr_mode = NDIS_80211_ENCR_DISABLED;
1232
1233         tmp = cpu_to_le32(encr_mode);
1234         ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1235                                                                 sizeof(tmp));
1236         if (ret != 0) {
1237                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1238                             ret);
1239                 return ret;
1240         }
1241
1242         return 0;
1243 }
1244
1245 static int set_infra_mode(struct usbnet *usbdev, int mode)
1246 {
1247         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1248         __le32 tmp;
1249         int ret;
1250
1251         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1252                    __func__, priv->infra_mode);
1253
1254         tmp = cpu_to_le32(mode);
1255         ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1256                                                                 sizeof(tmp));
1257         if (ret != 0) {
1258                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1259                             ret);
1260                 return ret;
1261         }
1262
1263         /* NDIS drivers clear keys when infrastructure mode is
1264          * changed. But Linux tools assume otherwise. So set the
1265          * keys */
1266         restore_keys(usbdev);
1267
1268         priv->infra_mode = mode;
1269         return 0;
1270 }
1271
1272 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1273 {
1274         __le32 tmp;
1275
1276         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1277
1278         if (rts_threshold < 0 || rts_threshold > 2347)
1279                 rts_threshold = 2347;
1280
1281         tmp = cpu_to_le32(rts_threshold);
1282         return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1283                                                                 sizeof(tmp));
1284 }
1285
1286 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1287 {
1288         __le32 tmp;
1289
1290         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1291
1292         if (frag_threshold < 256 || frag_threshold > 2346)
1293                 frag_threshold = 2346;
1294
1295         tmp = cpu_to_le32(frag_threshold);
1296         return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1297                                                                 sizeof(tmp));
1298 }
1299
1300 static void set_default_iw_params(struct usbnet *usbdev)
1301 {
1302         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1303         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1304                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1305         set_priv_filter(usbdev);
1306         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1307 }
1308
1309 static int deauthenticate(struct usbnet *usbdev)
1310 {
1311         int ret;
1312
1313         ret = disassociate(usbdev, true);
1314         set_default_iw_params(usbdev);
1315         return ret;
1316 }
1317
1318 static int set_channel(struct usbnet *usbdev, int channel)
1319 {
1320         struct ndis_80211_conf config;
1321         unsigned int dsconfig;
1322         int len, ret;
1323
1324         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1325
1326         /* this OID is valid only when not associated */
1327         if (is_associated(usbdev))
1328                 return 0;
1329
1330         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1331
1332         len = sizeof(config);
1333         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1334         if (ret < 0) {
1335                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1336                            __func__);
1337                 return ret;
1338         }
1339
1340         config.ds_config = cpu_to_le32(dsconfig);
1341         ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1342                                                                 sizeof(config));
1343
1344         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1345
1346         return ret;
1347 }
1348
1349 /* index must be 0 - N, as per NDIS  */
1350 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1351                                                                 int index)
1352 {
1353         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1354         struct ndis_80211_wep_key ndis_key;
1355         u32 cipher;
1356         int ret;
1357
1358         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1359                    __func__, index, key_len);
1360
1361         if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1362                 return -EINVAL;
1363
1364         if (key_len == 5)
1365                 cipher = WLAN_CIPHER_SUITE_WEP40;
1366         else
1367                 cipher = WLAN_CIPHER_SUITE_WEP104;
1368
1369         memset(&ndis_key, 0, sizeof(ndis_key));
1370
1371         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1372         ndis_key.length = cpu_to_le32(key_len);
1373         ndis_key.index = cpu_to_le32(index);
1374         memcpy(&ndis_key.material, key, key_len);
1375
1376         if (index == priv->encr_tx_key_index) {
1377                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1378                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1379                                                         RNDIS_WLAN_ALG_NONE);
1380                 if (ret)
1381                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1382                                     ret);
1383         }
1384
1385         ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1386                                                         sizeof(ndis_key));
1387         if (ret != 0) {
1388                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1389                             index + 1, ret);
1390                 return ret;
1391         }
1392
1393         priv->encr_keys[index].len = key_len;
1394         priv->encr_keys[index].cipher = cipher;
1395         memcpy(&priv->encr_keys[index].material, key, key_len);
1396         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1397
1398         return 0;
1399 }
1400
1401 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1402                         int index, const u8 *addr, const u8 *rx_seq,
1403                         int seq_len, u32 cipher, __le32 flags)
1404 {
1405         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1406         struct ndis_80211_key ndis_key;
1407         bool is_addr_ok;
1408         int ret;
1409
1410         if (index < 0 || index >= 4) {
1411                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1412                            __func__, index);
1413                 return -EINVAL;
1414         }
1415         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1416                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1417                            __func__, key_len);
1418                 return -EINVAL;
1419         }
1420         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1421                 if (!rx_seq || seq_len <= 0) {
1422                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1423                                    __func__);
1424                         return -EINVAL;
1425                 }
1426                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1427                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1428                         return -EINVAL;
1429                 }
1430         }
1431
1432         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1433                                         !is_broadcast_ether_addr(addr);
1434         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1435                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1436                            __func__, addr);
1437                 return -EINVAL;
1438         }
1439
1440         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1441                    __func__, index,
1442                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1443                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1444                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1445
1446         memset(&ndis_key, 0, sizeof(ndis_key));
1447
1448         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1449                                 sizeof(ndis_key.material) + key_len);
1450         ndis_key.length = cpu_to_le32(key_len);
1451         ndis_key.index = cpu_to_le32(index) | flags;
1452
1453         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1454                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1455                  * different order than NDIS spec, so swap the order here. */
1456                 memcpy(ndis_key.material, key, 16);
1457                 memcpy(ndis_key.material + 16, key + 24, 8);
1458                 memcpy(ndis_key.material + 24, key + 16, 8);
1459         } else
1460                 memcpy(ndis_key.material, key, key_len);
1461
1462         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1463                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1464
1465         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1466                 /* pairwise key */
1467                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1468         } else {
1469                 /* group key */
1470                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1471                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1472                 else
1473                         get_bssid(usbdev, ndis_key.bssid);
1474         }
1475
1476         ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1477                                         le32_to_cpu(ndis_key.size));
1478         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1479                    __func__, ret);
1480         if (ret != 0)
1481                 return ret;
1482
1483         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1484         priv->encr_keys[index].len = key_len;
1485         priv->encr_keys[index].cipher = cipher;
1486         memcpy(&priv->encr_keys[index].material, key, key_len);
1487         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1488                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1489         else
1490                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1491
1492         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1493                 priv->encr_tx_key_index = index;
1494
1495         return 0;
1496 }
1497
1498 static int restore_key(struct usbnet *usbdev, int key_idx)
1499 {
1500         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1501         struct rndis_wlan_encr_key key;
1502
1503         if (is_wpa_key(priv, key_idx))
1504                 return 0;
1505
1506         key = priv->encr_keys[key_idx];
1507
1508         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1509
1510         if (key.len == 0)
1511                 return 0;
1512
1513         return add_wep_key(usbdev, key.material, key.len, key_idx);
1514 }
1515
1516 static void restore_keys(struct usbnet *usbdev)
1517 {
1518         int i;
1519
1520         for (i = 0; i < 4; i++)
1521                 restore_key(usbdev, i);
1522 }
1523
1524 static void clear_key(struct rndis_wlan_private *priv, int idx)
1525 {
1526         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1527 }
1528
1529 /* remove_key is for both wep and wpa */
1530 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1531 {
1532         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1533         struct ndis_80211_remove_key remove_key;
1534         __le32 keyindex;
1535         bool is_wpa;
1536         int ret;
1537
1538         if (priv->encr_keys[index].len == 0)
1539                 return 0;
1540
1541         is_wpa = is_wpa_key(priv, index);
1542
1543         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1544                    __func__, index, is_wpa ? "wpa" : "wep",
1545                    priv->encr_keys[index].len);
1546
1547         clear_key(priv, index);
1548
1549         if (is_wpa) {
1550                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1551                 remove_key.index = cpu_to_le32(index);
1552                 if (bssid) {
1553                         /* pairwise key */
1554                         if (!is_broadcast_ether_addr(bssid))
1555                                 remove_key.index |=
1556                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1557                         memcpy(remove_key.bssid, bssid,
1558                                         sizeof(remove_key.bssid));
1559                 } else
1560                         memset(remove_key.bssid, 0xff,
1561                                                 sizeof(remove_key.bssid));
1562
1563                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1564                                                         sizeof(remove_key));
1565                 if (ret != 0)
1566                         return ret;
1567         } else {
1568                 keyindex = cpu_to_le32(index);
1569                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1570                                                         sizeof(keyindex));
1571                 if (ret != 0) {
1572                         netdev_warn(usbdev->net,
1573                                     "removing encryption key %d failed (%08X)\n",
1574                                     index, ret);
1575                         return ret;
1576                 }
1577         }
1578
1579         /* if it is transmit key, disable encryption */
1580         if (index == priv->encr_tx_key_index)
1581                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1582
1583         return 0;
1584 }
1585
1586 static void set_multicast_list(struct usbnet *usbdev)
1587 {
1588         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1589         struct netdev_hw_addr *ha;
1590         __le32 filter, basefilter;
1591         int ret;
1592         char *mc_addrs = NULL;
1593         int mc_count;
1594
1595         basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1596                               RNDIS_PACKET_TYPE_BROADCAST;
1597
1598         if (usbdev->net->flags & IFF_PROMISC) {
1599                 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1600                         RNDIS_PACKET_TYPE_ALL_LOCAL;
1601         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1602                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1603         }
1604
1605         if (filter != basefilter)
1606                 goto set_filter;
1607
1608         /*
1609          * mc_list should be accessed holding the lock, so copy addresses to
1610          * local buffer first.
1611          */
1612         netif_addr_lock_bh(usbdev->net);
1613         mc_count = netdev_mc_count(usbdev->net);
1614         if (mc_count > priv->multicast_size) {
1615                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1616         } else if (mc_count) {
1617                 int i = 0;
1618
1619                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1620                 if (!mc_addrs) {
1621                         netdev_warn(usbdev->net,
1622                                     "couldn't alloc %d bytes of memory\n",
1623                                     mc_count * ETH_ALEN);
1624                         netif_addr_unlock_bh(usbdev->net);
1625                         return;
1626                 }
1627
1628                 netdev_for_each_mc_addr(ha, usbdev->net)
1629                         memcpy(mc_addrs + i++ * ETH_ALEN,
1630                                ha->addr, ETH_ALEN);
1631         }
1632         netif_addr_unlock_bh(usbdev->net);
1633
1634         if (filter != basefilter)
1635                 goto set_filter;
1636
1637         if (mc_count) {
1638                 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1639                                     mc_count * ETH_ALEN);
1640                 kfree(mc_addrs);
1641                 if (ret == 0)
1642                         filter |= RNDIS_PACKET_TYPE_MULTICAST;
1643                 else
1644                         filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1645
1646                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1647                            mc_count, priv->multicast_size, ret);
1648         }
1649
1650 set_filter:
1651         ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1652                                                         sizeof(filter));
1653         if (ret < 0) {
1654                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1655                             le32_to_cpu(filter));
1656         }
1657
1658         netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1659                    le32_to_cpu(filter), ret);
1660 }
1661
1662 #ifdef DEBUG
1663 static void debug_print_pmkids(struct usbnet *usbdev,
1664                                 struct ndis_80211_pmkid *pmkids,
1665                                 const char *func_str)
1666 {
1667         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1668         int i, len, count, max_pmkids, entry_len;
1669
1670         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1671         len = le32_to_cpu(pmkids->length);
1672         count = le32_to_cpu(pmkids->bssid_info_count);
1673
1674         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1675
1676         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1677                                 "%d)\n", func_str, count, len, entry_len);
1678
1679         if (count > max_pmkids)
1680                 count = max_pmkids;
1681
1682         for (i = 0; i < count; i++) {
1683                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1684
1685                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1686                                 "pmkid: %08X:%08X:%08X:%08X\n",
1687                                 func_str, pmkids->bssid_info[i].bssid,
1688                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1689                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1690         }
1691 }
1692 #else
1693 static void debug_print_pmkids(struct usbnet *usbdev,
1694                                 struct ndis_80211_pmkid *pmkids,
1695                                 const char *func_str)
1696 {
1697         return;
1698 }
1699 #endif
1700
1701 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1702 {
1703         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1704         struct ndis_80211_pmkid *pmkids;
1705         int len, ret, max_pmkids;
1706
1707         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1708         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1709
1710         pmkids = kzalloc(len, GFP_KERNEL);
1711         if (!pmkids)
1712                 return ERR_PTR(-ENOMEM);
1713
1714         pmkids->length = cpu_to_le32(len);
1715         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1716
1717         ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1718         if (ret < 0) {
1719                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1720                                 " -> %d\n", __func__, len, max_pmkids, ret);
1721
1722                 kfree(pmkids);
1723                 return ERR_PTR(ret);
1724         }
1725
1726         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1727                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1728
1729         debug_print_pmkids(usbdev, pmkids, __func__);
1730
1731         return pmkids;
1732 }
1733
1734 static int set_device_pmkids(struct usbnet *usbdev,
1735                                 struct ndis_80211_pmkid *pmkids)
1736 {
1737         int ret, len, num_pmkids;
1738
1739         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1740         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1741         pmkids->length = cpu_to_le32(len);
1742
1743         debug_print_pmkids(usbdev, pmkids, __func__);
1744
1745         ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1746                                                 le32_to_cpu(pmkids->length));
1747         if (ret < 0) {
1748                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1749                                 "\n", __func__, len, num_pmkids, ret);
1750         }
1751
1752         kfree(pmkids);
1753         return ret;
1754 }
1755
1756 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1757                                                 struct ndis_80211_pmkid *pmkids,
1758                                                 struct cfg80211_pmksa *pmksa,
1759                                                 int max_pmkids)
1760 {
1761         int i, len, count, newlen, err;
1762
1763         len = le32_to_cpu(pmkids->length);
1764         count = le32_to_cpu(pmkids->bssid_info_count);
1765
1766         if (count > max_pmkids)
1767                 count = max_pmkids;
1768
1769         for (i = 0; i < count; i++)
1770                 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1771                                                         pmksa->bssid))
1772                         break;
1773
1774         /* pmkid not found */
1775         if (i == count) {
1776                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1777                                         __func__, pmksa->bssid);
1778                 err = -ENOENT;
1779                 goto error;
1780         }
1781
1782         for (; i + 1 < count; i++)
1783                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1784
1785         count--;
1786         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1787
1788         pmkids->length = cpu_to_le32(newlen);
1789         pmkids->bssid_info_count = cpu_to_le32(count);
1790
1791         return pmkids;
1792 error:
1793         kfree(pmkids);
1794         return ERR_PTR(err);
1795 }
1796
1797 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1798                                                 struct ndis_80211_pmkid *pmkids,
1799                                                 struct cfg80211_pmksa *pmksa,
1800                                                 int max_pmkids)
1801 {
1802         int i, err, len, count, newlen;
1803
1804         len = le32_to_cpu(pmkids->length);
1805         count = le32_to_cpu(pmkids->bssid_info_count);
1806
1807         if (count > max_pmkids)
1808                 count = max_pmkids;
1809
1810         /* update with new pmkid */
1811         for (i = 0; i < count; i++) {
1812                 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1813                                                         pmksa->bssid))
1814                         continue;
1815
1816                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1817                                                                 WLAN_PMKID_LEN);
1818
1819                 return pmkids;
1820         }
1821
1822         /* out of space, return error */
1823         if (i == max_pmkids) {
1824                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1825                 err = -ENOSPC;
1826                 goto error;
1827         }
1828
1829         /* add new pmkid */
1830         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1831
1832         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1833         if (!pmkids) {
1834                 err = -ENOMEM;
1835                 goto error;
1836         }
1837
1838         pmkids->length = cpu_to_le32(newlen);
1839         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1840
1841         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1842         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1843
1844         return pmkids;
1845 error:
1846         kfree(pmkids);
1847         return ERR_PTR(err);
1848 }
1849
1850 /*
1851  * cfg80211 ops
1852  */
1853 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1854                                         struct net_device *dev,
1855                                         enum nl80211_iftype type, u32 *flags,
1856                                         struct vif_params *params)
1857 {
1858         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1859         struct usbnet *usbdev = priv->usbdev;
1860         int mode;
1861
1862         switch (type) {
1863         case NL80211_IFTYPE_ADHOC:
1864                 mode = NDIS_80211_INFRA_ADHOC;
1865                 break;
1866         case NL80211_IFTYPE_STATION:
1867                 mode = NDIS_80211_INFRA_INFRA;
1868                 break;
1869         default:
1870                 return -EINVAL;
1871         }
1872
1873         priv->wdev.iftype = type;
1874
1875         return set_infra_mode(usbdev, mode);
1876 }
1877
1878 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1879 {
1880         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1881         struct usbnet *usbdev = priv->usbdev;
1882         int err;
1883
1884         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1885                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1886                 if (err < 0)
1887                         return err;
1888         }
1889
1890         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1891                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1892                 if (err < 0)
1893                         return err;
1894         }
1895
1896         return 0;
1897 }
1898
1899 static int rndis_set_tx_power(struct wiphy *wiphy,
1900                               enum nl80211_tx_power_setting type,
1901                               int mbm)
1902 {
1903         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1904         struct usbnet *usbdev = priv->usbdev;
1905
1906         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1907                    __func__, type, mbm);
1908
1909         if (mbm < 0 || (mbm % 100))
1910                 return -ENOTSUPP;
1911
1912         /* Device doesn't support changing txpower after initialization, only
1913          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1914          * currently used.
1915          */
1916         if (type == NL80211_TX_POWER_AUTOMATIC ||
1917             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1918                 if (!priv->radio_on)
1919                         disassociate(usbdev, true); /* turn on radio */
1920
1921                 return 0;
1922         }
1923
1924         return -ENOTSUPP;
1925 }
1926
1927 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1928 {
1929         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1930         struct usbnet *usbdev = priv->usbdev;
1931
1932         *dbm = get_bcm4320_power_dbm(priv);
1933
1934         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1935
1936         return 0;
1937 }
1938
1939 #define SCAN_DELAY_JIFFIES (6 * HZ)
1940 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1941                         struct cfg80211_scan_request *request)
1942 {
1943         struct usbnet *usbdev = netdev_priv(dev);
1944         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1945         int ret;
1946         int delay = SCAN_DELAY_JIFFIES;
1947
1948         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1949
1950         /* Get current bssid list from device before new scan, as new scan
1951          * clears internal bssid list.
1952          */
1953         rndis_check_bssid_list(usbdev, NULL, NULL);
1954
1955         if (!request)
1956                 return -EINVAL;
1957
1958         if (priv->scan_request && priv->scan_request != request)
1959                 return -EBUSY;
1960
1961         priv->scan_request = request;
1962
1963         ret = rndis_start_bssid_list_scan(usbdev);
1964         if (ret == 0) {
1965                 if (priv->device_type == RNDIS_BCM4320A)
1966                         delay = HZ;
1967
1968                 /* Wait before retrieving scan results from device */
1969                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1970         }
1971
1972         return ret;
1973 }
1974
1975 static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1976                                         struct ndis_80211_bssid_ex *bssid)
1977 {
1978         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1979         struct ieee80211_channel *channel;
1980         s32 signal;
1981         u64 timestamp;
1982         u16 capability;
1983         u16 beacon_interval;
1984         struct ndis_80211_fixed_ies *fixed;
1985         int ie_len, bssid_len;
1986         u8 *ie;
1987
1988         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1989                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1990
1991         /* parse bssid structure */
1992         bssid_len = le32_to_cpu(bssid->length);
1993
1994         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1995                         sizeof(struct ndis_80211_fixed_ies))
1996                 return NULL;
1997
1998         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1999
2000         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2001         ie_len = min(bssid_len - (int)sizeof(*bssid),
2002                                         (int)le32_to_cpu(bssid->ie_length));
2003         ie_len -= sizeof(struct ndis_80211_fixed_ies);
2004         if (ie_len < 0)
2005                 return NULL;
2006
2007         /* extract data for cfg80211_inform_bss */
2008         channel = ieee80211_get_channel(priv->wdev.wiphy,
2009                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2010         if (!channel)
2011                 return NULL;
2012
2013         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2014         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2015         capability = le16_to_cpu(fixed->capabilities);
2016         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2017
2018         return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2019                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2020                 GFP_KERNEL);
2021 }
2022
2023 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2024                                         struct ndis_80211_bssid_ex *bssid,
2025                                         int *bssid_len, void *buf, int len)
2026 {
2027         void *buf_end, *bssid_end;
2028
2029         buf_end = (char *)buf + len;
2030         bssid_end = (char *)bssid + *bssid_len;
2031
2032         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2033                 *bssid_len = 0;
2034                 return NULL;
2035         } else {
2036                 bssid = (void *)((char *)bssid + *bssid_len);
2037                 *bssid_len = le32_to_cpu(bssid->length);
2038                 return bssid;
2039         }
2040 }
2041
2042 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2043                                   int bssid_len, void *buf, int len)
2044 {
2045         void *buf_end, *bssid_end;
2046
2047         if (!bssid || bssid_len <= 0 || bssid_len > len)
2048                 return false;
2049
2050         buf_end = (char *)buf + len;
2051         bssid_end = (char *)bssid + bssid_len;
2052
2053         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2054 }
2055
2056 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2057                                         bool *matched)
2058 {
2059         void *buf = NULL;
2060         struct ndis_80211_bssid_list_ex *bssid_list;
2061         struct ndis_80211_bssid_ex *bssid;
2062         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2063
2064         netdev_dbg(usbdev->net, "%s()\n", __func__);
2065
2066         len = CONTROL_BUFFER_SIZE;
2067 resize_buf:
2068         buf = kzalloc(len, GFP_KERNEL);
2069         if (!buf) {
2070                 ret = -ENOMEM;
2071                 goto out;
2072         }
2073
2074         /* BSSID-list might have got bigger last time we checked, keep
2075          * resizing until it won't get any bigger.
2076          */
2077         new_len = len;
2078         ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2079         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2080                 goto out;
2081
2082         if (new_len > len) {
2083                 len = new_len;
2084                 kfree(buf);
2085                 goto resize_buf;
2086         }
2087
2088         len = new_len;
2089
2090         bssid_list = buf;
2091         count = le32_to_cpu(bssid_list->num_items);
2092         real_count = 0;
2093         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2094
2095         bssid_len = 0;
2096         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2097
2098         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2099          * received 'num_items' and walking through full bssid buffer instead.
2100          */
2101         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2102                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2103                     matched) {
2104                         if (compare_ether_addr(bssid->mac, match_bssid))
2105                                 *matched = true;
2106                 }
2107
2108                 real_count++;
2109                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2110         }
2111
2112         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2113                                 " %d\n", __func__, count, real_count);
2114
2115 out:
2116         kfree(buf);
2117         return ret;
2118 }
2119
2120 static void rndis_get_scan_results(struct work_struct *work)
2121 {
2122         struct rndis_wlan_private *priv =
2123                 container_of(work, struct rndis_wlan_private, scan_work.work);
2124         struct usbnet *usbdev = priv->usbdev;
2125         int ret;
2126
2127         netdev_dbg(usbdev->net, "get_scan_results\n");
2128
2129         if (!priv->scan_request)
2130                 return;
2131
2132         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2133
2134         cfg80211_scan_done(priv->scan_request, ret < 0);
2135
2136         priv->scan_request = NULL;
2137 }
2138
2139 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2140                                         struct cfg80211_connect_params *sme)
2141 {
2142         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2143         struct usbnet *usbdev = priv->usbdev;
2144         struct ieee80211_channel *channel = sme->channel;
2145         struct ndis_80211_ssid ssid;
2146         int pairwise = RNDIS_WLAN_ALG_NONE;
2147         int groupwise = RNDIS_WLAN_ALG_NONE;
2148         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2149         int length, i, ret, chan = -1;
2150
2151         if (channel)
2152                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2153
2154         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2155         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2156                 pairwise |=
2157                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2158
2159         if (sme->crypto.n_ciphers_pairwise > 0 &&
2160                         pairwise == RNDIS_WLAN_ALG_NONE) {
2161                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2162                 return -ENOTSUPP;
2163         }
2164
2165         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2166                 keymgmt |=
2167                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2168
2169         if (sme->crypto.n_akm_suites > 0 &&
2170                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2171                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2172                 return -ENOTSUPP;
2173         }
2174
2175         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2176                    sme->ssid, sme->bssid, chan,
2177                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2178                    groupwise, pairwise, keymgmt);
2179
2180         if (is_associated(usbdev))
2181                 disassociate(usbdev, false);
2182
2183         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2184         if (ret < 0) {
2185                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2186                            ret);
2187                 goto err_turn_radio_on;
2188         }
2189
2190         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2191                                                                 keymgmt);
2192         if (ret < 0) {
2193                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2194                            ret);
2195                 goto err_turn_radio_on;
2196         }
2197
2198         set_priv_filter(usbdev);
2199
2200         ret = set_encr_mode(usbdev, pairwise, groupwise);
2201         if (ret < 0) {
2202                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2203                            ret);
2204                 goto err_turn_radio_on;
2205         }
2206
2207         if (channel) {
2208                 ret = set_channel(usbdev, chan);
2209                 if (ret < 0) {
2210                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2211                                    ret);
2212                         goto err_turn_radio_on;
2213                 }
2214         }
2215
2216         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2217                 priv->encr_tx_key_index = sme->key_idx;
2218                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2219                 if (ret < 0) {
2220                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2221                                    ret, sme->key_len, sme->key_idx);
2222                         goto err_turn_radio_on;
2223                 }
2224         }
2225
2226         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2227                                 !is_broadcast_ether_addr(sme->bssid)) {
2228                 ret = set_bssid(usbdev, sme->bssid);
2229                 if (ret < 0) {
2230                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2231                                    ret);
2232                         goto err_turn_radio_on;
2233                 }
2234         } else
2235                 clear_bssid(usbdev);
2236
2237         length = sme->ssid_len;
2238         if (length > NDIS_802_11_LENGTH_SSID)
2239                 length = NDIS_802_11_LENGTH_SSID;
2240
2241         memset(&ssid, 0, sizeof(ssid));
2242         ssid.length = cpu_to_le32(length);
2243         memcpy(ssid.essid, sme->ssid, length);
2244
2245         /* Pause and purge rx queue, so we don't pass packets before
2246          * 'media connect'-indication.
2247          */
2248         usbnet_pause_rx(usbdev);
2249         usbnet_purge_paused_rxq(usbdev);
2250
2251         ret = set_essid(usbdev, &ssid);
2252         if (ret < 0)
2253                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2254         return ret;
2255
2256 err_turn_radio_on:
2257         disassociate(usbdev, true);
2258
2259         return ret;
2260 }
2261
2262 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2263                                                                 u16 reason_code)
2264 {
2265         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2266         struct usbnet *usbdev = priv->usbdev;
2267
2268         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2269
2270         priv->connected = false;
2271         memset(priv->bssid, 0, ETH_ALEN);
2272
2273         return deauthenticate(usbdev);
2274 }
2275
2276 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2277                                         struct cfg80211_ibss_params *params)
2278 {
2279         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2280         struct usbnet *usbdev = priv->usbdev;
2281         struct ieee80211_channel *channel = params->channel;
2282         struct ndis_80211_ssid ssid;
2283         enum nl80211_auth_type auth_type;
2284         int ret, alg, length, chan = -1;
2285
2286         if (channel)
2287                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2288
2289         /* TODO: How to handle ad-hoc encryption?
2290          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2291          * pre-shared for encryption (open/shared/wpa), is key set before
2292          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2293          */
2294         if (params->privacy) {
2295                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2296                 alg = RNDIS_WLAN_ALG_WEP;
2297         } else {
2298                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2299                 alg = RNDIS_WLAN_ALG_NONE;
2300         }
2301
2302         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2303                    params->ssid, params->bssid, chan, params->privacy);
2304
2305         if (is_associated(usbdev))
2306                 disassociate(usbdev, false);
2307
2308         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2309         if (ret < 0) {
2310                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2311                            ret);
2312                 goto err_turn_radio_on;
2313         }
2314
2315         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2316         if (ret < 0) {
2317                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2318                            ret);
2319                 goto err_turn_radio_on;
2320         }
2321
2322         set_priv_filter(usbdev);
2323
2324         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2325         if (ret < 0) {
2326                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2327                            ret);
2328                 goto err_turn_radio_on;
2329         }
2330
2331         if (channel) {
2332                 ret = set_channel(usbdev, chan);
2333                 if (ret < 0) {
2334                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2335                                    ret);
2336                         goto err_turn_radio_on;
2337                 }
2338         }
2339
2340         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2341                                 !is_broadcast_ether_addr(params->bssid)) {
2342                 ret = set_bssid(usbdev, params->bssid);
2343                 if (ret < 0) {
2344                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2345                                    ret);
2346                         goto err_turn_radio_on;
2347                 }
2348         } else
2349                 clear_bssid(usbdev);
2350
2351         length = params->ssid_len;
2352         if (length > NDIS_802_11_LENGTH_SSID)
2353                 length = NDIS_802_11_LENGTH_SSID;
2354
2355         memset(&ssid, 0, sizeof(ssid));
2356         ssid.length = cpu_to_le32(length);
2357         memcpy(ssid.essid, params->ssid, length);
2358
2359         /* Don't need to pause rx queue for ad-hoc. */
2360         usbnet_purge_paused_rxq(usbdev);
2361         usbnet_resume_rx(usbdev);
2362
2363         ret = set_essid(usbdev, &ssid);
2364         if (ret < 0)
2365                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2366                            ret);
2367         return ret;
2368
2369 err_turn_radio_on:
2370         disassociate(usbdev, true);
2371
2372         return ret;
2373 }
2374
2375 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2376 {
2377         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2378         struct usbnet *usbdev = priv->usbdev;
2379
2380         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2381
2382         priv->connected = false;
2383         memset(priv->bssid, 0, ETH_ALEN);
2384
2385         return deauthenticate(usbdev);
2386 }
2387
2388 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2389         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2390 {
2391         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2392         struct usbnet *usbdev = priv->usbdev;
2393
2394         return set_channel(usbdev,
2395                         ieee80211_frequency_to_channel(chan->center_freq));
2396 }
2397
2398 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2399                          u8 key_index, bool pairwise, const u8 *mac_addr,
2400                          struct key_params *params)
2401 {
2402         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2403         struct usbnet *usbdev = priv->usbdev;
2404         __le32 flags;
2405
2406         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2407                    __func__, key_index, mac_addr, params->cipher);
2408
2409         switch (params->cipher) {
2410         case WLAN_CIPHER_SUITE_WEP40:
2411         case WLAN_CIPHER_SUITE_WEP104:
2412                 return add_wep_key(usbdev, params->key, params->key_len,
2413                                                                 key_index);
2414         case WLAN_CIPHER_SUITE_TKIP:
2415         case WLAN_CIPHER_SUITE_CCMP:
2416                 flags = 0;
2417
2418                 if (params->seq && params->seq_len > 0)
2419                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2420                 if (mac_addr)
2421                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2422                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2423
2424                 return add_wpa_key(usbdev, params->key, params->key_len,
2425                                 key_index, mac_addr, params->seq,
2426                                 params->seq_len, params->cipher, flags);
2427         default:
2428                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2429                            __func__, params->cipher);
2430                 return -ENOTSUPP;
2431         }
2432 }
2433
2434 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2435                          u8 key_index, bool pairwise, const u8 *mac_addr)
2436 {
2437         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2438         struct usbnet *usbdev = priv->usbdev;
2439
2440         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2441
2442         return remove_key(usbdev, key_index, mac_addr);
2443 }
2444
2445 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2446                                  u8 key_index, bool unicast, bool multicast)
2447 {
2448         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2449         struct usbnet *usbdev = priv->usbdev;
2450         struct rndis_wlan_encr_key key;
2451
2452         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2453
2454         priv->encr_tx_key_index = key_index;
2455
2456         if (is_wpa_key(priv, key_index))
2457                 return 0;
2458
2459         key = priv->encr_keys[key_index];
2460
2461         return add_wep_key(usbdev, key.material, key.len, key_index);
2462 }
2463
2464 static void rndis_fill_station_info(struct usbnet *usbdev,
2465                                                 struct station_info *sinfo)
2466 {
2467         __le32 linkspeed, rssi;
2468         int ret, len;
2469
2470         memset(sinfo, 0, sizeof(*sinfo));
2471
2472         len = sizeof(linkspeed);
2473         ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2474         if (ret == 0) {
2475                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2476                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2477         }
2478
2479         len = sizeof(rssi);
2480         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2481         if (ret == 0) {
2482                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2483                 sinfo->filled |= STATION_INFO_SIGNAL;
2484         }
2485 }
2486
2487 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2488                                         u8 *mac, struct station_info *sinfo)
2489 {
2490         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2491         struct usbnet *usbdev = priv->usbdev;
2492
2493         if (compare_ether_addr(priv->bssid, mac))
2494                 return -ENOENT;
2495
2496         rndis_fill_station_info(usbdev, sinfo);
2497
2498         return 0;
2499 }
2500
2501 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2502                                int idx, u8 *mac, struct station_info *sinfo)
2503 {
2504         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2505         struct usbnet *usbdev = priv->usbdev;
2506
2507         if (idx != 0)
2508                 return -ENOENT;
2509
2510         memcpy(mac, priv->bssid, ETH_ALEN);
2511
2512         rndis_fill_station_info(usbdev, sinfo);
2513
2514         return 0;
2515 }
2516
2517 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2518                                 struct cfg80211_pmksa *pmksa)
2519 {
2520         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2521         struct usbnet *usbdev = priv->usbdev;
2522         struct ndis_80211_pmkid *pmkids;
2523         u32 *tmp = (u32 *)pmksa->pmkid;
2524
2525         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2526                         pmksa->bssid,
2527                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2528                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2529
2530         pmkids = get_device_pmkids(usbdev);
2531         if (IS_ERR(pmkids)) {
2532                 /* couldn't read PMKID cache from device */
2533                 return PTR_ERR(pmkids);
2534         }
2535
2536         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2537         if (IS_ERR(pmkids)) {
2538                 /* not found, list full, etc */
2539                 return PTR_ERR(pmkids);
2540         }
2541
2542         return set_device_pmkids(usbdev, pmkids);
2543 }
2544
2545 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2546                                 struct cfg80211_pmksa *pmksa)
2547 {
2548         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2549         struct usbnet *usbdev = priv->usbdev;
2550         struct ndis_80211_pmkid *pmkids;
2551         u32 *tmp = (u32 *)pmksa->pmkid;
2552
2553         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2554                         pmksa->bssid,
2555                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2556                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2557
2558         pmkids = get_device_pmkids(usbdev);
2559         if (IS_ERR(pmkids)) {
2560                 /* Couldn't read PMKID cache from device */
2561                 return PTR_ERR(pmkids);
2562         }
2563
2564         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2565         if (IS_ERR(pmkids)) {
2566                 /* not found, etc */
2567                 return PTR_ERR(pmkids);
2568         }
2569
2570         return set_device_pmkids(usbdev, pmkids);
2571 }
2572
2573 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2574 {
2575         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2576         struct usbnet *usbdev = priv->usbdev;
2577         struct ndis_80211_pmkid pmkid;
2578
2579         netdev_dbg(usbdev->net, "%s()\n", __func__);
2580
2581         memset(&pmkid, 0, sizeof(pmkid));
2582
2583         pmkid.length = cpu_to_le32(sizeof(pmkid));
2584         pmkid.bssid_info_count = cpu_to_le32(0);
2585
2586         return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2587 }
2588
2589 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2590                                 bool enabled, int timeout)
2591 {
2592         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2593         struct usbnet *usbdev = priv->usbdev;
2594         int power_mode;
2595         __le32 mode;
2596         int ret;
2597
2598         if (priv->device_type != RNDIS_BCM4320B)
2599                 return -ENOTSUPP;
2600
2601         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2602                                 enabled ? "enabled" : "disabled",
2603                                 timeout);
2604
2605         if (enabled)
2606                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2607         else
2608                 power_mode = NDIS_80211_POWER_MODE_CAM;
2609
2610         if (power_mode == priv->power_mode)
2611                 return 0;
2612
2613         priv->power_mode = power_mode;
2614
2615         mode = cpu_to_le32(power_mode);
2616         ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2617
2618         netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2619                                 __func__, ret);
2620
2621         return ret;
2622 }
2623
2624 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2625                                         struct net_device *dev,
2626                                         s32 rssi_thold, u32 rssi_hyst)
2627 {
2628         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2629
2630         priv->cqm_rssi_thold = rssi_thold;
2631         priv->cqm_rssi_hyst = rssi_hyst;
2632         priv->last_cqm_event_rssi = 0;
2633
2634         return 0;
2635 }
2636
2637 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2638                                            struct ndis_80211_assoc_info *info)
2639 {
2640         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2641         struct ieee80211_channel *channel;
2642         struct ndis_80211_conf config;
2643         struct ndis_80211_ssid ssid;
2644         s32 signal;
2645         u64 timestamp;
2646         u16 capability;
2647         u16 beacon_interval;
2648         __le32 rssi;
2649         u8 ie_buf[34];
2650         int len, ret, ie_len;
2651
2652         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2653         len = sizeof(rssi);
2654         rssi = 0;
2655         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2656         signal = level_to_qual(le32_to_cpu(rssi));
2657
2658         netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2659                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2660                    level_to_qual(le32_to_cpu(rssi)));
2661
2662         /* Get AP capabilities */
2663         if (info) {
2664                 capability = le16_to_cpu(info->resp_ie.capa);
2665         } else {
2666                 /* Set atleast ESS/IBSS capability */
2667                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2668                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2669         }
2670
2671         /* Get channel and beacon interval */
2672         len = sizeof(config);
2673         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
2674         netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
2675                                 __func__, ret);
2676         if (ret >= 0) {
2677                 beacon_interval = le16_to_cpu(config.beacon_period);
2678                 channel = ieee80211_get_channel(priv->wdev.wiphy,
2679                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
2680                 if (!channel) {
2681                         netdev_warn(usbdev->net, "%s(): could not get channel."
2682                                                  "\n", __func__);
2683                         return;
2684                 }
2685         } else {
2686                 netdev_warn(usbdev->net, "%s(): could not get configuration.\n",
2687                                          __func__);
2688                 return;
2689         }
2690
2691         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2692         len = sizeof(ssid);
2693         memset(&ssid, 0, sizeof(ssid));
2694         ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2695         netdev_dbg(usbdev->net, "%s(): 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_interval, ie_len,
2715                 ssid.essid, signal);
2716
2717         cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2718                 timestamp, capability, beacon_interval, ie_buf, ie_len,
2719                 signal, GFP_KERNEL);
2720 }
2721
2722 /*
2723  * workers, indication handlers, device poller
2724  */
2725 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2726 {
2727         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2728         struct ndis_80211_assoc_info *info = NULL;
2729         u8 bssid[ETH_ALEN];
2730         int resp_ie_len, req_ie_len;
2731         u8 *req_ie, *resp_ie;
2732         int ret, offset;
2733         bool roamed = false;
2734         bool match_bss;
2735
2736         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2737                 /* received media connect indication while connected, either
2738                  * device reassociated with same AP or roamed to new. */
2739                 roamed = true;
2740         }
2741
2742         req_ie_len = 0;
2743         resp_ie_len = 0;
2744         req_ie = NULL;
2745         resp_ie = NULL;
2746
2747         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2748                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2749                 if (!info) {
2750                         /* No memory? Try resume work later */
2751                         set_bit(WORK_LINK_UP, &priv->work_pending);
2752                         queue_work(priv->workqueue, &priv->work);
2753                         return;
2754                 }
2755
2756                 /* Get association info IEs from device. */
2757                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2758                 if (!ret) {
2759                         req_ie_len = le32_to_cpu(info->req_ie_length);
2760                         if (req_ie_len > 0) {
2761                                 offset = le32_to_cpu(info->offset_req_ies);
2762
2763                                 if (offset > CONTROL_BUFFER_SIZE)
2764                                         offset = CONTROL_BUFFER_SIZE;
2765
2766                                 req_ie = (u8 *)info + offset;
2767
2768                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2769                                         req_ie_len =
2770                                                 CONTROL_BUFFER_SIZE - offset;
2771                         }
2772
2773                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2774                         if (resp_ie_len > 0) {
2775                                 offset = le32_to_cpu(info->offset_resp_ies);
2776
2777                                 if (offset > CONTROL_BUFFER_SIZE)
2778                                         offset = CONTROL_BUFFER_SIZE;
2779
2780                                 resp_ie = (u8 *)info + offset;
2781
2782                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2783                                         resp_ie_len =
2784                                                 CONTROL_BUFFER_SIZE - offset;
2785                         }
2786                 } else {
2787                         /* Since rndis_wlan_craft_connected_bss() might use info
2788                          * later and expects info to contain valid data if
2789                          * non-null, free info and set NULL here.
2790                          */
2791                         kfree(info);
2792                         info = NULL;
2793                 }
2794         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2795                 return;
2796
2797         ret = get_bssid(usbdev, bssid);
2798         if (ret < 0)
2799                 memset(bssid, 0, sizeof(bssid));
2800
2801         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2802                    bssid, roamed ? " roamed" : "");
2803
2804         /* Internal bss list in device should contain at least the currently
2805          * connected bss and we can get it to cfg80211 with
2806          * rndis_check_bssid_list().
2807          *
2808          * NDIS spec says: "If the device is associated, but the associated
2809          *  BSSID is not in its BSSID scan list, then the driver must add an
2810          *  entry for the BSSID at the end of the data that it returns in
2811          *  response to query of OID_802_11_BSSID_LIST."
2812          *
2813          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2814          */
2815         match_bss = false;
2816         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2817
2818         if (!is_zero_ether_addr(bssid) && !match_bss) {
2819                 /* Couldn't get bss from device, we need to manually craft bss
2820                  * for cfg80211.
2821                  */
2822                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2823         }
2824
2825         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2826                 if (!roamed)
2827                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2828                                                 req_ie_len, resp_ie,
2829                                                 resp_ie_len, 0, GFP_KERNEL);
2830                 else
2831                         cfg80211_roamed(usbdev->net, NULL, bssid,
2832                                         req_ie, req_ie_len,
2833                                         resp_ie, resp_ie_len, GFP_KERNEL);
2834         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2835                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2836
2837         if (info != NULL)
2838                 kfree(info);
2839
2840         priv->connected = true;
2841         memcpy(priv->bssid, bssid, ETH_ALEN);
2842
2843         usbnet_resume_rx(usbdev);
2844         netif_carrier_on(usbdev->net);
2845 }
2846
2847 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2848 {
2849         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2850
2851         if (priv->connected) {
2852                 priv->connected = false;
2853                 memset(priv->bssid, 0, ETH_ALEN);
2854
2855                 deauthenticate(usbdev);
2856
2857                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2858         }
2859
2860         netif_carrier_off(usbdev->net);
2861 }
2862
2863 static void rndis_wlan_worker(struct work_struct *work)
2864 {
2865         struct rndis_wlan_private *priv =
2866                 container_of(work, struct rndis_wlan_private, work);
2867         struct usbnet *usbdev = priv->usbdev;
2868
2869         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2870                 rndis_wlan_do_link_up_work(usbdev);
2871
2872         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2873                 rndis_wlan_do_link_down_work(usbdev);
2874
2875         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2876                 set_multicast_list(usbdev);
2877 }
2878
2879 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2880 {
2881         struct usbnet *usbdev = netdev_priv(dev);
2882         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2883
2884         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2885                 return;
2886
2887         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2888         queue_work(priv->workqueue, &priv->work);
2889 }
2890
2891 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2892                                 struct ndis_80211_status_indication *indication,
2893                                 int len)
2894 {
2895         u8 *buf;
2896         const char *type;
2897         int flags, buflen, key_id;
2898         bool pairwise_error, group_error;
2899         struct ndis_80211_auth_request *auth_req;
2900         enum nl80211_key_type key_type;
2901
2902         /* must have at least one array entry */
2903         if (len < offsetof(struct ndis_80211_status_indication, u) +
2904                                 sizeof(struct ndis_80211_auth_request)) {
2905                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2906                             len);
2907                 return;
2908         }
2909
2910         buf = (void *)&indication->u.auth_request[0];
2911         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2912
2913         while (buflen >= sizeof(*auth_req)) {
2914                 auth_req = (void *)buf;
2915                 type = "unknown";
2916                 flags = le32_to_cpu(auth_req->flags);
2917                 pairwise_error = false;
2918                 group_error = false;
2919
2920                 if (flags & 0x1)
2921                         type = "reauth request";
2922                 if (flags & 0x2)
2923                         type = "key update request";
2924                 if (flags & 0x6) {
2925                         pairwise_error = true;
2926                         type = "pairwise_error";
2927                 }
2928                 if (flags & 0xe) {
2929                         group_error = true;
2930                         type = "group_error";
2931                 }
2932
2933                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2934                             type, le32_to_cpu(auth_req->flags));
2935
2936                 if (pairwise_error) {
2937                         key_type = NL80211_KEYTYPE_PAIRWISE;
2938                         key_id = -1;
2939
2940                         cfg80211_michael_mic_failure(usbdev->net,
2941                                                         auth_req->bssid,
2942                                                         key_type, key_id, NULL,
2943                                                         GFP_KERNEL);
2944                 }
2945
2946                 if (group_error) {
2947                         key_type = NL80211_KEYTYPE_GROUP;
2948                         key_id = -1;
2949
2950                         cfg80211_michael_mic_failure(usbdev->net,
2951                                                         auth_req->bssid,
2952                                                         key_type, key_id, NULL,
2953                                                         GFP_KERNEL);
2954                 }
2955
2956                 buflen -= le32_to_cpu(auth_req->length);
2957                 buf += le32_to_cpu(auth_req->length);
2958         }
2959 }
2960
2961 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2962                                 struct ndis_80211_status_indication *indication,
2963                                 int len)
2964 {
2965         struct ndis_80211_pmkid_cand_list *cand_list;
2966         int list_len, expected_len, i;
2967
2968         if (len < offsetof(struct ndis_80211_status_indication, u) +
2969                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2970                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2971                             len);
2972                 return;
2973         }
2974
2975         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2976                         sizeof(struct ndis_80211_pmkid_candidate);
2977         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2978                         offsetof(struct ndis_80211_status_indication, u);
2979
2980         if (len < expected_len) {
2981                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2982                             len, expected_len);
2983                 return;
2984         }
2985
2986         cand_list = &indication->u.cand_list;
2987
2988         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2989                     le32_to_cpu(cand_list->version),
2990                     le32_to_cpu(cand_list->num_candidates));
2991
2992         if (le32_to_cpu(cand_list->version) != 1)
2993                 return;
2994
2995         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2996                 struct ndis_80211_pmkid_candidate *cand =
2997                                                 &cand_list->candidate_list[i];
2998
2999                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
3000                            i, le32_to_cpu(cand->flags), cand->bssid);
3001
3002 #if 0
3003                 struct iw_pmkid_cand pcand;
3004                 union iwreq_data wrqu;
3005
3006                 memset(&pcand, 0, sizeof(pcand));
3007                 if (le32_to_cpu(cand->flags) & 0x01)
3008                         pcand.flags |= IW_PMKID_CAND_PREAUTH;
3009                 pcand.index = i;
3010                 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
3011
3012                 memset(&wrqu, 0, sizeof(wrqu));
3013                 wrqu.data.length = sizeof(pcand);
3014                 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
3015                                                                 (u8 *)&pcand);
3016 #endif
3017         }
3018 }
3019
3020 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3021                         struct rndis_indicate *msg, int buflen)
3022 {
3023         struct ndis_80211_status_indication *indication;
3024         int len, offset;
3025
3026         offset = offsetof(struct rndis_indicate, status) +
3027                         le32_to_cpu(msg->offset);
3028         len = le32_to_cpu(msg->length);
3029
3030         if (len < 8) {
3031                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3032                             len);
3033                 return;
3034         }
3035
3036         if (offset + len > buflen) {
3037                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3038                             offset + len, buflen);
3039                 return;
3040         }
3041
3042         indication = (void *)((u8 *)msg + offset);
3043
3044         switch (le32_to_cpu(indication->status_type)) {
3045         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3046                 netdev_info(usbdev->net, "radio state indication: %i\n",
3047                             le32_to_cpu(indication->u.radio_status));
3048                 return;
3049
3050         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3051                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3052                             le32_to_cpu(indication->u.media_stream_mode));
3053                 return;
3054
3055         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3056                 rndis_wlan_auth_indication(usbdev, indication, len);
3057                 return;
3058
3059         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3060                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3061                 return;
3062
3063         default:
3064                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3065                             le32_to_cpu(indication->status_type));
3066         }
3067 }
3068
3069 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3070 {
3071         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3072         struct rndis_indicate *msg = ind;
3073
3074         switch (msg->status) {
3075         case RNDIS_STATUS_MEDIA_CONNECT:
3076                 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3077                         /* OID_802_11_ADD_KEY causes sometimes extra
3078                          * "media connect" indications which confuses driver
3079                          * and userspace to think that device is
3080                          * roaming/reassociating when it isn't.
3081                          */
3082                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3083                         return;
3084                 }
3085
3086                 usbnet_pause_rx(usbdev);
3087
3088                 netdev_info(usbdev->net, "media connect\n");
3089
3090                 /* queue work to avoid recursive calls into rndis_command */
3091                 set_bit(WORK_LINK_UP, &priv->work_pending);
3092                 queue_work(priv->workqueue, &priv->work);
3093                 break;
3094
3095         case RNDIS_STATUS_MEDIA_DISCONNECT:
3096                 netdev_info(usbdev->net, "media disconnect\n");
3097
3098                 /* queue work to avoid recursive calls into rndis_command */
3099                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3100                 queue_work(priv->workqueue, &priv->work);
3101                 break;
3102
3103         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3104                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3105                 break;
3106
3107         default:
3108                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3109                             le32_to_cpu(msg->status));
3110                 break;
3111         }
3112 }
3113
3114 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3115 {
3116         struct {
3117                 __le32  num_items;
3118                 __le32  items[8];
3119         } networks_supported;
3120         struct ndis_80211_capability *caps;
3121         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3122         int len, retval, i, n;
3123         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3124
3125         /* determine supported modes */
3126         len = sizeof(networks_supported);
3127         retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3128                                                 &networks_supported, &len);
3129         if (retval >= 0) {
3130                 n = le32_to_cpu(networks_supported.num_items);
3131                 if (n > 8)
3132                         n = 8;
3133                 for (i = 0; i < n; i++) {
3134                         switch (le32_to_cpu(networks_supported.items[i])) {
3135                         case NDIS_80211_TYPE_FREQ_HOP:
3136                         case NDIS_80211_TYPE_DIRECT_SEQ:
3137                                 priv->caps |= CAP_MODE_80211B;
3138                                 break;
3139                         case NDIS_80211_TYPE_OFDM_A:
3140                                 priv->caps |= CAP_MODE_80211A;
3141                                 break;
3142                         case NDIS_80211_TYPE_OFDM_G:
3143                                 priv->caps |= CAP_MODE_80211G;
3144                                 break;
3145                         }
3146                 }
3147         }
3148
3149         /* get device 802.11 capabilities, number of PMKIDs */
3150         caps = (struct ndis_80211_capability *)caps_buf;
3151         len = sizeof(caps_buf);
3152         retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3153         if (retval >= 0) {
3154                 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3155                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3156                                 le32_to_cpu(caps->length),
3157                                 le32_to_cpu(caps->version),
3158                                 le32_to_cpu(caps->num_pmkids),
3159                                 le32_to_cpu(caps->num_auth_encr_pair));
3160                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3161         } else
3162                 wiphy->max_num_pmkids = 0;
3163
3164         return retval;
3165 }
3166
3167 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3168 {
3169         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3170         enum nl80211_cqm_rssi_threshold_event event;
3171         int thold, hyst, last_event;
3172
3173         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3174                 return;
3175         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3176                 return;
3177
3178         last_event = priv->last_cqm_event_rssi;
3179         thold = priv->cqm_rssi_thold;
3180         hyst = priv->cqm_rssi_hyst;
3181
3182         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3183                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3184         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3185                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3186         else
3187                 return;
3188
3189         priv->last_cqm_event_rssi = rssi;
3190         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3191 }
3192
3193 #define DEVICE_POLLER_JIFFIES (HZ)
3194 static void rndis_device_poller(struct work_struct *work)
3195 {
3196         struct rndis_wlan_private *priv =
3197                 container_of(work, struct rndis_wlan_private,
3198                                                         dev_poller_work.work);
3199         struct usbnet *usbdev = priv->usbdev;
3200         __le32 rssi, tmp;
3201         int len, ret, j;
3202         int update_jiffies = DEVICE_POLLER_JIFFIES;
3203         void *buf;
3204
3205         /* Only check/do workaround when connected. Calling is_associated()
3206          * also polls device with rndis_command() and catches for media link
3207          * indications.
3208          */
3209         if (!is_associated(usbdev)) {
3210                 /* Workaround bad scanning in BCM4320a devices with active
3211                  * background scanning when not associated.
3212                  */
3213                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3214                     !priv->scan_request) {
3215                         /* Get previous scan results */
3216                         rndis_check_bssid_list(usbdev, NULL, NULL);
3217
3218                         /* Initiate new scan */
3219                         rndis_start_bssid_list_scan(usbdev);
3220                 }
3221
3222                 goto end;
3223         }
3224
3225         len = sizeof(rssi);
3226         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3227         if (ret == 0) {
3228                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3229                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3230         }
3231
3232         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3233                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3234
3235         /* Workaround transfer stalls on poor quality links.
3236          * TODO: find right way to fix these stalls (as stalls do not happen
3237          * with ndiswrapper/windows driver). */
3238         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3239                 /* Decrease stats worker interval to catch stalls.
3240                  * faster. Faster than 400-500ms causes packet loss,
3241                  * Slower doesn't catch stalls fast enough.
3242                  */
3243                 j = msecs_to_jiffies(priv->param_workaround_interval);
3244                 if (j > DEVICE_POLLER_JIFFIES)
3245                         j = DEVICE_POLLER_JIFFIES;
3246                 else if (j <= 0)
3247                         j = 1;
3248                 update_jiffies = j;
3249
3250                 /* Send scan OID. Use of both OIDs is required to get device
3251                  * working.
3252                  */
3253                 tmp = cpu_to_le32(1);
3254                 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3255                                                                 sizeof(tmp));
3256
3257                 len = CONTROL_BUFFER_SIZE;
3258                 buf = kmalloc(len, GFP_KERNEL);
3259                 if (!buf)
3260                         goto end;
3261
3262                 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3263                 kfree(buf);
3264         }
3265
3266 end:
3267         if (update_jiffies >= HZ)
3268                 update_jiffies = round_jiffies_relative(update_jiffies);
3269         else {
3270                 j = round_jiffies_relative(update_jiffies);
3271                 if (abs(j - update_jiffies) <= 10)
3272                         update_jiffies = j;
3273         }
3274
3275         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3276                                                                 update_jiffies);
3277 }
3278
3279 /*
3280  * driver/device initialization
3281  */
3282 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3283 {
3284         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3285
3286         priv->device_type = device_type;
3287
3288         priv->param_country[0] = modparam_country[0];
3289         priv->param_country[1] = modparam_country[1];
3290         priv->param_country[2] = 0;
3291         priv->param_frameburst   = modparam_frameburst;
3292         priv->param_afterburner  = modparam_afterburner;
3293         priv->param_power_save   = modparam_power_save;
3294         priv->param_power_output = modparam_power_output;
3295         priv->param_roamtrigger  = modparam_roamtrigger;
3296         priv->param_roamdelta    = modparam_roamdelta;
3297
3298         priv->param_country[0] = toupper(priv->param_country[0]);
3299         priv->param_country[1] = toupper(priv->param_country[1]);
3300         /* doesn't support EU as country code, use FI instead */
3301         if (!strcmp(priv->param_country, "EU"))
3302                 strcpy(priv->param_country, "FI");
3303
3304         if (priv->param_power_save < 0)
3305                 priv->param_power_save = 0;
3306         else if (priv->param_power_save > 2)
3307                 priv->param_power_save = 2;
3308
3309         if (priv->param_power_output < 0)
3310                 priv->param_power_output = 0;
3311         else if (priv->param_power_output > 3)
3312                 priv->param_power_output = 3;
3313
3314         if (priv->param_roamtrigger < -80)
3315                 priv->param_roamtrigger = -80;
3316         else if (priv->param_roamtrigger > -60)
3317                 priv->param_roamtrigger = -60;
3318
3319         if (priv->param_roamdelta < 0)
3320                 priv->param_roamdelta = 0;
3321         else if (priv->param_roamdelta > 2)
3322                 priv->param_roamdelta = 2;
3323
3324         if (modparam_workaround_interval < 0)
3325                 priv->param_workaround_interval = 500;
3326         else
3327                 priv->param_workaround_interval = modparam_workaround_interval;
3328 }
3329
3330 static int unknown_early_init(struct usbnet *usbdev)
3331 {
3332         /* copy module parameters for unknown so that iwconfig reports txpower
3333          * and workaround parameter is copied to private structure correctly.
3334          */
3335         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3336
3337         /* This is unknown device, so do not try set configuration parameters.
3338          */
3339
3340         return 0;
3341 }
3342
3343 static int bcm4320a_early_init(struct usbnet *usbdev)
3344 {
3345         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3346          * and workaround parameter is copied to private structure correctly.
3347          */
3348         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3349
3350         /* bcm4320a doesn't handle configuration parameters well. Try
3351          * set any and you get partially zeroed mac and broken device.
3352          */
3353
3354         return 0;
3355 }
3356
3357 static int bcm4320b_early_init(struct usbnet *usbdev)
3358 {
3359         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3360         char buf[8];
3361
3362         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3363
3364         /* Early initialization settings, setting these won't have effect
3365          * if called after generic_rndis_bind().
3366          */
3367
3368         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3369         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3370                                         priv->param_frameburst ? "1" : "0");
3371         rndis_set_config_parameter_str(usbdev, "Afterburner",
3372                                         priv->param_afterburner ? "1" : "0");
3373         sprintf(buf, "%d", priv->param_power_save);
3374         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3375         sprintf(buf, "%d", priv->param_power_output);
3376         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3377         sprintf(buf, "%d", priv->param_roamtrigger);
3378         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3379         sprintf(buf, "%d", priv->param_roamdelta);
3380         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3381
3382         return 0;
3383 }
3384
3385 /* same as rndis_netdev_ops but with local multicast handler */
3386 static const struct net_device_ops rndis_wlan_netdev_ops = {
3387         .ndo_open               = usbnet_open,
3388         .ndo_stop               = usbnet_stop,
3389         .ndo_start_xmit         = usbnet_start_xmit,
3390         .ndo_tx_timeout         = usbnet_tx_timeout,
3391         .ndo_set_mac_address    = eth_mac_addr,
3392         .ndo_validate_addr      = eth_validate_addr,
3393         .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
3394 };
3395
3396 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3397 {
3398         struct wiphy *wiphy;
3399         struct rndis_wlan_private *priv;
3400         int retval, len;
3401         __le32 tmp;
3402
3403         /* allocate wiphy and rndis private data
3404          * NOTE: We only support a single virtual interface, so wiphy
3405          * and wireless_dev are somewhat synonymous for this device.
3406          */
3407         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3408         if (!wiphy)
3409                 return -ENOMEM;
3410
3411         priv = wiphy_priv(wiphy);
3412         usbdev->net->ieee80211_ptr = &priv->wdev;
3413         priv->wdev.wiphy = wiphy;
3414         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3415
3416         /* These have to be initialized before calling generic_rndis_bind().
3417          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3418          */
3419         usbdev->driver_priv = priv;
3420         priv->usbdev = usbdev;
3421
3422         mutex_init(&priv->command_lock);
3423
3424         /* because rndis_command() sleeps we need to use workqueue */
3425         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3426         INIT_WORK(&priv->work, rndis_wlan_worker);
3427         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3428         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3429
3430         /* try bind rndis_host */
3431         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3432         if (retval < 0)
3433                 goto fail;
3434
3435         /* generic_rndis_bind set packet filter to multicast_all+
3436          * promisc mode which doesn't work well for our devices (device
3437          * picks up rssi to closest station instead of to access point).
3438          *
3439          * rndis_host wants to avoid all OID as much as possible
3440          * so do promisc/multicast handling in rndis_wlan.
3441          */
3442         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3443
3444         tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3445         retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3446                                                                 sizeof(tmp));
3447
3448         len = sizeof(tmp);
3449         retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3450                                                                 &len);
3451         priv->multicast_size = le32_to_cpu(tmp);
3452         if (retval < 0 || priv->multicast_size < 0)
3453                 priv->multicast_size = 0;
3454         if (priv->multicast_size > 0)
3455                 usbdev->net->flags |= IFF_MULTICAST;
3456         else
3457                 usbdev->net->flags &= ~IFF_MULTICAST;
3458
3459         /* fill-out wiphy structure and register w/ cfg80211 */
3460         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3461         wiphy->privid = rndis_wiphy_privid;
3462         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3463                                         | BIT(NL80211_IFTYPE_ADHOC);
3464         wiphy->max_scan_ssids = 1;
3465
3466         /* TODO: fill-out band/encr information based on priv->caps */
3467         rndis_wlan_get_caps(usbdev, wiphy);
3468
3469         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3470         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3471         priv->band.channels = priv->channels;
3472         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3473         priv->band.bitrates = priv->rates;
3474         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3475         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3476         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3477
3478         memcpy(priv->cipher_suites, rndis_cipher_suites,
3479                                                 sizeof(rndis_cipher_suites));
3480         wiphy->cipher_suites = priv->cipher_suites;
3481         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3482
3483         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3484
3485         if (wiphy_register(wiphy)) {
3486                 retval = -ENODEV;
3487                 goto fail;
3488         }
3489
3490         set_default_iw_params(usbdev);
3491
3492         priv->power_mode = -1;
3493
3494         /* set default rts/frag */
3495         rndis_set_wiphy_params(wiphy,
3496                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3497
3498         /* turn radio off on init */
3499         priv->radio_on = false;
3500         disassociate(usbdev, false);
3501         netif_carrier_off(usbdev->net);
3502
3503         return 0;
3504
3505 fail:
3506         cancel_delayed_work_sync(&priv->dev_poller_work);
3507         cancel_delayed_work_sync(&priv->scan_work);
3508         cancel_work_sync(&priv->work);
3509         flush_workqueue(priv->workqueue);
3510         destroy_workqueue(priv->workqueue);
3511
3512         wiphy_free(wiphy);
3513         return retval;
3514 }
3515
3516 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3517 {
3518         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3519
3520         /* turn radio off */
3521         disassociate(usbdev, false);
3522
3523         cancel_delayed_work_sync(&priv->dev_poller_work);
3524         cancel_delayed_work_sync(&priv->scan_work);
3525         cancel_work_sync(&priv->work);
3526         flush_workqueue(priv->workqueue);
3527         destroy_workqueue(priv->workqueue);
3528
3529         rndis_unbind(usbdev, intf);
3530
3531         wiphy_unregister(priv->wdev.wiphy);
3532         wiphy_free(priv->wdev.wiphy);
3533 }
3534
3535 static int rndis_wlan_reset(struct usbnet *usbdev)
3536 {
3537         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3538         int retval;
3539
3540         netdev_dbg(usbdev->net, "%s()\n", __func__);
3541
3542         retval = rndis_reset(usbdev);
3543         if (retval)
3544                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3545
3546         /* rndis_reset cleared multicast list, so restore here.
3547            (set_multicast_list() also turns on current packet filter) */
3548         set_multicast_list(usbdev);
3549
3550         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3551                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3552
3553         return deauthenticate(usbdev);
3554 }
3555
3556 static int rndis_wlan_stop(struct usbnet *usbdev)
3557 {
3558         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3559         int retval;
3560         __le32 filter;
3561
3562         netdev_dbg(usbdev->net, "%s()\n", __func__);
3563
3564         retval = disassociate(usbdev, false);
3565
3566         priv->work_pending = 0;
3567         cancel_delayed_work_sync(&priv->dev_poller_work);
3568         cancel_delayed_work_sync(&priv->scan_work);
3569         cancel_work_sync(&priv->work);
3570         flush_workqueue(priv->workqueue);
3571
3572         if (priv->scan_request) {
3573                 cfg80211_scan_done(priv->scan_request, true);
3574                 priv->scan_request = NULL;
3575         }
3576
3577         /* Set current packet filter zero to block receiving data packets from
3578            device. */
3579         filter = 0;
3580         rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3581                                                                 sizeof(filter));
3582
3583         return retval;
3584 }
3585
3586 static const struct driver_info bcm4320b_info = {
3587         .description =  "Wireless RNDIS device, BCM4320b based",
3588         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3589                                 FLAG_AVOID_UNLINK_URBS,
3590         .bind =         rndis_wlan_bind,
3591         .unbind =       rndis_wlan_unbind,
3592         .status =       rndis_status,
3593         .rx_fixup =     rndis_rx_fixup,
3594         .tx_fixup =     rndis_tx_fixup,
3595         .reset =        rndis_wlan_reset,
3596         .stop =         rndis_wlan_stop,
3597         .early_init =   bcm4320b_early_init,
3598         .indication =   rndis_wlan_indication,
3599 };
3600
3601 static const struct driver_info bcm4320a_info = {
3602         .description =  "Wireless RNDIS device, BCM4320a based",
3603         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3604                                 FLAG_AVOID_UNLINK_URBS,
3605         .bind =         rndis_wlan_bind,
3606         .unbind =       rndis_wlan_unbind,
3607         .status =       rndis_status,
3608         .rx_fixup =     rndis_rx_fixup,
3609         .tx_fixup =     rndis_tx_fixup,
3610         .reset =        rndis_wlan_reset,
3611         .stop =         rndis_wlan_stop,
3612         .early_init =   bcm4320a_early_init,
3613         .indication =   rndis_wlan_indication,
3614 };
3615
3616 static const struct driver_info rndis_wlan_info = {
3617         .description =  "Wireless RNDIS device",
3618         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3619                                 FLAG_AVOID_UNLINK_URBS,
3620         .bind =         rndis_wlan_bind,
3621         .unbind =       rndis_wlan_unbind,
3622         .status =       rndis_status,
3623         .rx_fixup =     rndis_rx_fixup,
3624         .tx_fixup =     rndis_tx_fixup,
3625         .reset =        rndis_wlan_reset,
3626         .stop =         rndis_wlan_stop,
3627         .early_init =   unknown_early_init,
3628         .indication =   rndis_wlan_indication,
3629 };
3630
3631 /*-------------------------------------------------------------------------*/
3632
3633 static const struct usb_device_id products [] = {
3634 #define RNDIS_MASTER_INTERFACE \
3635         .bInterfaceClass        = USB_CLASS_COMM, \
3636         .bInterfaceSubClass     = 2 /* ACM */, \
3637         .bInterfaceProtocol     = 0x0ff
3638
3639 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3640  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3641  */
3642 {
3643         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3644                           | USB_DEVICE_ID_MATCH_DEVICE,
3645         .idVendor               = 0x0411,
3646         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3647         RNDIS_MASTER_INTERFACE,
3648         .driver_info            = (unsigned long) &bcm4320b_info,
3649 }, {
3650         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3651                           | USB_DEVICE_ID_MATCH_DEVICE,
3652         .idVendor               = 0x0baf,
3653         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3654         RNDIS_MASTER_INTERFACE,
3655         .driver_info            = (unsigned long) &bcm4320b_info,
3656 }, {
3657         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3658                           | USB_DEVICE_ID_MATCH_DEVICE,
3659         .idVendor               = 0x050d,
3660         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3661         RNDIS_MASTER_INTERFACE,
3662         .driver_info            = (unsigned long) &bcm4320b_info,
3663 }, {
3664         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3665                           | USB_DEVICE_ID_MATCH_DEVICE,
3666         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3667         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3668         RNDIS_MASTER_INTERFACE,
3669         .driver_info            = (unsigned long) &bcm4320b_info,
3670 }, {
3671         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3672                           | USB_DEVICE_ID_MATCH_DEVICE,
3673         .idVendor               = 0x13b1,
3674         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3675         RNDIS_MASTER_INTERFACE,
3676         .driver_info            = (unsigned long) &bcm4320b_info,
3677 }, {
3678         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3679                           | USB_DEVICE_ID_MATCH_DEVICE,
3680         .idVendor               = 0x13b1,
3681         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3682         RNDIS_MASTER_INTERFACE,
3683         .driver_info            = (unsigned long) &bcm4320b_info,
3684 }, {
3685         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3686                           | USB_DEVICE_ID_MATCH_DEVICE,
3687         .idVendor               = 0x0b05,
3688         .idProduct              = 0x1717,       /* Asus WL169gE */
3689         RNDIS_MASTER_INTERFACE,
3690         .driver_info            = (unsigned long) &bcm4320b_info,
3691 }, {
3692         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3693                           | USB_DEVICE_ID_MATCH_DEVICE,
3694         .idVendor               = 0x0a5c,
3695         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3696         RNDIS_MASTER_INTERFACE,
3697         .driver_info            = (unsigned long) &bcm4320b_info,
3698 }, {
3699         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3700                           | USB_DEVICE_ID_MATCH_DEVICE,
3701         .idVendor               = 0x1690,
3702         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3703         RNDIS_MASTER_INTERFACE,
3704         .driver_info            = (unsigned long) &bcm4320b_info,
3705 },
3706 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3707  * parameters available, hardware probably contain older firmware version with
3708  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3709  */
3710 {
3711         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3712                           | USB_DEVICE_ID_MATCH_DEVICE,
3713         .idVendor               = 0x13b1,
3714         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3715         RNDIS_MASTER_INTERFACE,
3716         .driver_info            = (unsigned long) &bcm4320a_info,
3717 }, {
3718         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3719                           | USB_DEVICE_ID_MATCH_DEVICE,
3720         .idVendor               = 0x0baf,
3721         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3722         RNDIS_MASTER_INTERFACE,
3723         .driver_info            = (unsigned long) &bcm4320a_info,
3724 }, {
3725         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3726                           | USB_DEVICE_ID_MATCH_DEVICE,
3727         .idVendor               = 0x0411,
3728         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3729         RNDIS_MASTER_INTERFACE,
3730         .driver_info            = (unsigned long) &bcm4320a_info,
3731 },
3732 /* Generic Wireless RNDIS devices that we don't have exact
3733  * idVendor/idProduct/chip yet.
3734  */
3735 {
3736         /* RNDIS is MSFT's un-official variant of CDC ACM */
3737         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3738         .driver_info = (unsigned long) &rndis_wlan_info,
3739 }, {
3740         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3741         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3742         .driver_info = (unsigned long) &rndis_wlan_info,
3743 },
3744         { },            // END
3745 };
3746 MODULE_DEVICE_TABLE(usb, products);
3747
3748 static struct usb_driver rndis_wlan_driver = {
3749         .name =         "rndis_wlan",
3750         .id_table =     products,
3751         .probe =        usbnet_probe,
3752         .disconnect =   usbnet_disconnect,
3753         .suspend =      usbnet_suspend,
3754         .resume =       usbnet_resume,
3755 };
3756
3757 static int __init rndis_wlan_init(void)
3758 {
3759         return usb_register(&rndis_wlan_driver);
3760 }
3761 module_init(rndis_wlan_init);
3762
3763 static void __exit rndis_wlan_exit(void)
3764 {
3765         usb_deregister(&rndis_wlan_driver);
3766 }
3767 module_exit(rndis_wlan_exit);
3768
3769 MODULE_AUTHOR("Bjorge Dijkstra");
3770 MODULE_AUTHOR("Jussi Kivilinna");
3771 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3772 MODULE_LICENSE("GPL");
3773