Merge branch 'for-davem' of ssh://master.kernel.org/pub/scm/linux/kernel/git/linville...
[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/wireless.h>
40 #include <linux/ieee80211.h>
41 #include <linux/if_arp.h>
42 #include <linux/ctype.h>
43 #include <linux/spinlock.h>
44 #include <linux/slab.h>
45 #include <net/iw_handler.h>
46 #include <net/cfg80211.h>
47 #include <linux/usb/usbnet.h>
48 #include <linux/usb/rndis_host.h>
49
50
51 /* NOTE: All these are settings for Broadcom chipset */
52 static char modparam_country[4] = "EU";
53 module_param_string(country, modparam_country, 4, 0444);
54 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
55
56 static int modparam_frameburst = 1;
57 module_param_named(frameburst, modparam_frameburst, int, 0444);
58 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
59
60 static int modparam_afterburner = 0;
61 module_param_named(afterburner, modparam_afterburner, int, 0444);
62 MODULE_PARM_DESC(afterburner,
63         "enable afterburner aka '125 High Speed Mode' (default: off)");
64
65 static int modparam_power_save = 0;
66 module_param_named(power_save, modparam_power_save, int, 0444);
67 MODULE_PARM_DESC(power_save,
68         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
69
70 static int modparam_power_output = 3;
71 module_param_named(power_output, modparam_power_output, int, 0444);
72 MODULE_PARM_DESC(power_output,
73         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
74
75 static int modparam_roamtrigger = -70;
76 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
77 MODULE_PARM_DESC(roamtrigger,
78         "set roaming dBm trigger: -80=optimize for distance, "
79                                 "-60=bandwidth (default: -70)");
80
81 static int modparam_roamdelta = 1;
82 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
83 MODULE_PARM_DESC(roamdelta,
84         "set roaming tendency: 0=aggressive, 1=moderate, "
85                                 "2=conservative (default: moderate)");
86
87 static int modparam_workaround_interval;
88 module_param_named(workaround_interval, modparam_workaround_interval,
89                                                         int, 0444);
90 MODULE_PARM_DESC(workaround_interval,
91         "set stall workaround interval in msecs (0=disabled) (default: 0)");
92
93
94 /* various RNDIS OID defs */
95 #define OID_GEN_LINK_SPEED                      cpu_to_le32(0x00010107)
96 #define OID_GEN_RNDIS_CONFIG_PARAMETER          cpu_to_le32(0x0001021b)
97
98 #define OID_GEN_XMIT_OK                         cpu_to_le32(0x00020101)
99 #define OID_GEN_RCV_OK                          cpu_to_le32(0x00020102)
100 #define OID_GEN_XMIT_ERROR                      cpu_to_le32(0x00020103)
101 #define OID_GEN_RCV_ERROR                       cpu_to_le32(0x00020104)
102 #define OID_GEN_RCV_NO_BUFFER                   cpu_to_le32(0x00020105)
103
104 #define OID_802_3_CURRENT_ADDRESS               cpu_to_le32(0x01010102)
105 #define OID_802_3_MULTICAST_LIST                cpu_to_le32(0x01010103)
106 #define OID_802_3_MAXIMUM_LIST_SIZE             cpu_to_le32(0x01010104)
107
108 #define OID_802_11_BSSID                        cpu_to_le32(0x0d010101)
109 #define OID_802_11_SSID                         cpu_to_le32(0x0d010102)
110 #define OID_802_11_INFRASTRUCTURE_MODE          cpu_to_le32(0x0d010108)
111 #define OID_802_11_ADD_WEP                      cpu_to_le32(0x0d010113)
112 #define OID_802_11_REMOVE_WEP                   cpu_to_le32(0x0d010114)
113 #define OID_802_11_DISASSOCIATE                 cpu_to_le32(0x0d010115)
114 #define OID_802_11_AUTHENTICATION_MODE          cpu_to_le32(0x0d010118)
115 #define OID_802_11_PRIVACY_FILTER               cpu_to_le32(0x0d010119)
116 #define OID_802_11_BSSID_LIST_SCAN              cpu_to_le32(0x0d01011a)
117 #define OID_802_11_ENCRYPTION_STATUS            cpu_to_le32(0x0d01011b)
118 #define OID_802_11_ADD_KEY                      cpu_to_le32(0x0d01011d)
119 #define OID_802_11_REMOVE_KEY                   cpu_to_le32(0x0d01011e)
120 #define OID_802_11_ASSOCIATION_INFORMATION      cpu_to_le32(0x0d01011f)
121 #define OID_802_11_CAPABILITY                   cpu_to_le32(0x0d010122)
122 #define OID_802_11_PMKID                        cpu_to_le32(0x0d010123)
123 #define OID_802_11_NETWORK_TYPES_SUPPORTED      cpu_to_le32(0x0d010203)
124 #define OID_802_11_NETWORK_TYPE_IN_USE          cpu_to_le32(0x0d010204)
125 #define OID_802_11_TX_POWER_LEVEL               cpu_to_le32(0x0d010205)
126 #define OID_802_11_RSSI                         cpu_to_le32(0x0d010206)
127 #define OID_802_11_RSSI_TRIGGER                 cpu_to_le32(0x0d010207)
128 #define OID_802_11_FRAGMENTATION_THRESHOLD      cpu_to_le32(0x0d010209)
129 #define OID_802_11_RTS_THRESHOLD                cpu_to_le32(0x0d01020a)
130 #define OID_802_11_SUPPORTED_RATES              cpu_to_le32(0x0d01020e)
131 #define OID_802_11_CONFIGURATION                cpu_to_le32(0x0d010211)
132 #define OID_802_11_POWER_MODE                   cpu_to_le32(0x0d010216)
133 #define OID_802_11_BSSID_LIST                   cpu_to_le32(0x0d010217)
134
135
136 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
137 #define WL_NOISE        -96     /* typical noise level in dBm */
138 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
139
140
141 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
142  * based on wireless rndis) has default txpower of 13dBm.
143  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
144  *  100% : 20 mW ~ 13dBm
145  *   75% : 15 mW ~ 12dBm
146  *   50% : 10 mW ~ 10dBm
147  *   25% :  5 mW ~  7dBm
148  */
149 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
150 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
151 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
152 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
153
154
155 /* codes for "status" field of completion messages */
156 #define RNDIS_STATUS_ADAPTER_NOT_READY          cpu_to_le32(0xc0010011)
157 #define RNDIS_STATUS_ADAPTER_NOT_OPEN           cpu_to_le32(0xc0010012)
158
159
160 /* Known device types */
161 #define RNDIS_UNKNOWN   0
162 #define RNDIS_BCM4320A  1
163 #define RNDIS_BCM4320B  2
164
165
166 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
167  * slightly modified for datatype endianess, etc
168  */
169 #define NDIS_802_11_LENGTH_SSID 32
170 #define NDIS_802_11_LENGTH_RATES 8
171 #define NDIS_802_11_LENGTH_RATES_EX 16
172
173 enum ndis_80211_net_type {
174         NDIS_80211_TYPE_FREQ_HOP,
175         NDIS_80211_TYPE_DIRECT_SEQ,
176         NDIS_80211_TYPE_OFDM_A,
177         NDIS_80211_TYPE_OFDM_G
178 };
179
180 enum ndis_80211_net_infra {
181         NDIS_80211_INFRA_ADHOC,
182         NDIS_80211_INFRA_INFRA,
183         NDIS_80211_INFRA_AUTO_UNKNOWN
184 };
185
186 enum ndis_80211_auth_mode {
187         NDIS_80211_AUTH_OPEN,
188         NDIS_80211_AUTH_SHARED,
189         NDIS_80211_AUTH_AUTO_SWITCH,
190         NDIS_80211_AUTH_WPA,
191         NDIS_80211_AUTH_WPA_PSK,
192         NDIS_80211_AUTH_WPA_NONE,
193         NDIS_80211_AUTH_WPA2,
194         NDIS_80211_AUTH_WPA2_PSK
195 };
196
197 enum ndis_80211_encr_status {
198         NDIS_80211_ENCR_WEP_ENABLED,
199         NDIS_80211_ENCR_DISABLED,
200         NDIS_80211_ENCR_WEP_KEY_ABSENT,
201         NDIS_80211_ENCR_NOT_SUPPORTED,
202         NDIS_80211_ENCR_TKIP_ENABLED,
203         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
204         NDIS_80211_ENCR_CCMP_ENABLED,
205         NDIS_80211_ENCR_CCMP_KEY_ABSENT
206 };
207
208 enum ndis_80211_priv_filter {
209         NDIS_80211_PRIV_ACCEPT_ALL,
210         NDIS_80211_PRIV_8021X_WEP
211 };
212
213 enum ndis_80211_status_type {
214         NDIS_80211_STATUSTYPE_AUTHENTICATION,
215         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
216         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
217         NDIS_80211_STATUSTYPE_RADIOSTATE,
218 };
219
220 enum ndis_80211_media_stream_mode {
221         NDIS_80211_MEDIA_STREAM_OFF,
222         NDIS_80211_MEDIA_STREAM_ON
223 };
224
225 enum ndis_80211_radio_status {
226         NDIS_80211_RADIO_STATUS_ON,
227         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
228         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
229 };
230
231 enum ndis_80211_addkey_bits {
232         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
233         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
234         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
235         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
236 };
237
238 enum ndis_80211_addwep_bits {
239         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
240         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
241 };
242
243 enum ndis_80211_power_mode {
244         NDIS_80211_POWER_MODE_CAM,
245         NDIS_80211_POWER_MODE_MAX_PSP,
246         NDIS_80211_POWER_MODE_FAST_PSP,
247 };
248
249 struct ndis_80211_auth_request {
250         __le32 length;
251         u8 bssid[6];
252         u8 padding[2];
253         __le32 flags;
254 } __packed;
255
256 struct ndis_80211_pmkid_candidate {
257         u8 bssid[6];
258         u8 padding[2];
259         __le32 flags;
260 } __packed;
261
262 struct ndis_80211_pmkid_cand_list {
263         __le32 version;
264         __le32 num_candidates;
265         struct ndis_80211_pmkid_candidate candidate_list[0];
266 } __packed;
267
268 struct ndis_80211_status_indication {
269         __le32 status_type;
270         union {
271                 __le32                                  media_stream_mode;
272                 __le32                                  radio_status;
273                 struct ndis_80211_auth_request          auth_request[0];
274                 struct ndis_80211_pmkid_cand_list       cand_list;
275         } u;
276 } __packed;
277
278 struct ndis_80211_ssid {
279         __le32 length;
280         u8 essid[NDIS_802_11_LENGTH_SSID];
281 } __packed;
282
283 struct ndis_80211_conf_freq_hop {
284         __le32 length;
285         __le32 hop_pattern;
286         __le32 hop_set;
287         __le32 dwell_time;
288 } __packed;
289
290 struct ndis_80211_conf {
291         __le32 length;
292         __le32 beacon_period;
293         __le32 atim_window;
294         __le32 ds_config;
295         struct ndis_80211_conf_freq_hop fh_config;
296 } __packed;
297
298 struct ndis_80211_bssid_ex {
299         __le32 length;
300         u8 mac[6];
301         u8 padding[2];
302         struct ndis_80211_ssid ssid;
303         __le32 privacy;
304         __le32 rssi;
305         __le32 net_type;
306         struct ndis_80211_conf config;
307         __le32 net_infra;
308         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
309         __le32 ie_length;
310         u8 ies[0];
311 } __packed;
312
313 struct ndis_80211_bssid_list_ex {
314         __le32 num_items;
315         struct ndis_80211_bssid_ex bssid[0];
316 } __packed;
317
318 struct ndis_80211_fixed_ies {
319         u8 timestamp[8];
320         __le16 beacon_interval;
321         __le16 capabilities;
322 } __packed;
323
324 struct ndis_80211_wep_key {
325         __le32 size;
326         __le32 index;
327         __le32 length;
328         u8 material[32];
329 } __packed;
330
331 struct ndis_80211_key {
332         __le32 size;
333         __le32 index;
334         __le32 length;
335         u8 bssid[6];
336         u8 padding[6];
337         u8 rsc[8];
338         u8 material[32];
339 } __packed;
340
341 struct ndis_80211_remove_key {
342         __le32 size;
343         __le32 index;
344         u8 bssid[6];
345         u8 padding[2];
346 } __packed;
347
348 struct ndis_config_param {
349         __le32 name_offs;
350         __le32 name_length;
351         __le32 type;
352         __le32 value_offs;
353         __le32 value_length;
354 } __packed;
355
356 struct ndis_80211_assoc_info {
357         __le32 length;
358         __le16 req_ies;
359         struct req_ie {
360                 __le16 capa;
361                 __le16 listen_interval;
362                 u8 cur_ap_address[6];
363         } req_ie;
364         __le32 req_ie_length;
365         __le32 offset_req_ies;
366         __le16 resp_ies;
367         struct resp_ie {
368                 __le16 capa;
369                 __le16 status_code;
370                 __le16 assoc_id;
371         } resp_ie;
372         __le32 resp_ie_length;
373         __le32 offset_resp_ies;
374 } __packed;
375
376 struct ndis_80211_auth_encr_pair {
377         __le32 auth_mode;
378         __le32 encr_mode;
379 } __packed;
380
381 struct ndis_80211_capability {
382         __le32 length;
383         __le32 version;
384         __le32 num_pmkids;
385         __le32 num_auth_encr_pair;
386         struct ndis_80211_auth_encr_pair auth_encr_pair[0];
387 } __packed;
388
389 struct ndis_80211_bssid_info {
390         u8 bssid[6];
391         u8 pmkid[16];
392 };
393
394 struct ndis_80211_pmkid {
395         __le32 length;
396         __le32 bssid_info_count;
397         struct ndis_80211_bssid_info bssid_info[0];
398 };
399
400 /*
401  *  private data
402  */
403 #define NET_TYPE_11FB   0
404
405 #define CAP_MODE_80211A         1
406 #define CAP_MODE_80211B         2
407 #define CAP_MODE_80211G         4
408 #define CAP_MODE_MASK           7
409
410 #define WORK_LINK_UP            (1<<0)
411 #define WORK_LINK_DOWN          (1<<1)
412 #define WORK_SET_MULTICAST_LIST (1<<2)
413
414 #define RNDIS_WLAN_ALG_NONE     0
415 #define RNDIS_WLAN_ALG_WEP      (1<<0)
416 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
417 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
418
419 #define RNDIS_WLAN_KEY_MGMT_NONE        0
420 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
421 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
422
423 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
424
425 static const struct ieee80211_channel rndis_channels[] = {
426         { .center_freq = 2412 },
427         { .center_freq = 2417 },
428         { .center_freq = 2422 },
429         { .center_freq = 2427 },
430         { .center_freq = 2432 },
431         { .center_freq = 2437 },
432         { .center_freq = 2442 },
433         { .center_freq = 2447 },
434         { .center_freq = 2452 },
435         { .center_freq = 2457 },
436         { .center_freq = 2462 },
437         { .center_freq = 2467 },
438         { .center_freq = 2472 },
439         { .center_freq = 2484 },
440 };
441
442 static const struct ieee80211_rate rndis_rates[] = {
443         { .bitrate = 10 },
444         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
445         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
446         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
447         { .bitrate = 60 },
448         { .bitrate = 90 },
449         { .bitrate = 120 },
450         { .bitrate = 180 },
451         { .bitrate = 240 },
452         { .bitrate = 360 },
453         { .bitrate = 480 },
454         { .bitrate = 540 }
455 };
456
457 static const u32 rndis_cipher_suites[] = {
458         WLAN_CIPHER_SUITE_WEP40,
459         WLAN_CIPHER_SUITE_WEP104,
460         WLAN_CIPHER_SUITE_TKIP,
461         WLAN_CIPHER_SUITE_CCMP,
462 };
463
464 struct rndis_wlan_encr_key {
465         int len;
466         u32 cipher;
467         u8 material[32];
468         u8 bssid[ETH_ALEN];
469         bool pairwise;
470         bool tx_key;
471 };
472
473 /* RNDIS device private data */
474 struct rndis_wlan_private {
475         struct usbnet *usbdev;
476
477         struct wireless_dev wdev;
478
479         struct cfg80211_scan_request *scan_request;
480
481         struct workqueue_struct *workqueue;
482         struct delayed_work dev_poller_work;
483         struct delayed_work scan_work;
484         struct work_struct work;
485         struct mutex command_lock;
486         unsigned long work_pending;
487         int last_qual;
488         s32 cqm_rssi_thold;
489         u32 cqm_rssi_hyst;
490         int last_cqm_event_rssi;
491
492         struct ieee80211_supported_band band;
493         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
494         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
495         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
496
497         int device_type;
498         int caps;
499         int multicast_size;
500
501         /* module parameters */
502         char param_country[4];
503         int  param_frameburst;
504         int  param_afterburner;
505         int  param_power_save;
506         int  param_power_output;
507         int  param_roamtrigger;
508         int  param_roamdelta;
509         u32  param_workaround_interval;
510
511         /* hardware state */
512         bool radio_on;
513         int power_mode;
514         int infra_mode;
515         bool connected;
516         u8 bssid[ETH_ALEN];
517         __le32 current_command_oid;
518
519         /* encryption stuff */
520         int  encr_tx_key_index;
521         struct rndis_wlan_encr_key encr_keys[4];
522         int  wpa_version;
523
524         u8 command_buffer[COMMAND_BUFFER_SIZE];
525 };
526
527 /*
528  * cfg80211 ops
529  */
530 static int rndis_change_virtual_intf(struct wiphy *wiphy,
531                                         struct net_device *dev,
532                                         enum nl80211_iftype type, u32 *flags,
533                                         struct vif_params *params);
534
535 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
536                         struct cfg80211_scan_request *request);
537
538 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
539
540 static int rndis_set_tx_power(struct wiphy *wiphy,
541                               enum nl80211_tx_power_setting type,
542                               int mbm);
543 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
544
545 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
546                                 struct cfg80211_connect_params *sme);
547
548 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
549                                 u16 reason_code);
550
551 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
552                                         struct cfg80211_ibss_params *params);
553
554 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
555
556 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
557         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
558
559 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
560                          u8 key_index, bool pairwise, const u8 *mac_addr,
561                          struct key_params *params);
562
563 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
564                          u8 key_index, bool pairwise, const u8 *mac_addr);
565
566 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
567                                  u8 key_index, bool unicast, bool multicast);
568
569 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
570                                         u8 *mac, struct station_info *sinfo);
571
572 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
573                                int idx, u8 *mac, struct station_info *sinfo);
574
575 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
576                                 struct cfg80211_pmksa *pmksa);
577
578 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
579                                 struct cfg80211_pmksa *pmksa);
580
581 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
582
583 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
584                                 bool enabled, int timeout);
585
586 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
587                                         struct net_device *dev,
588                                         s32 rssi_thold, u32 rssi_hyst);
589
590 static const struct cfg80211_ops rndis_config_ops = {
591         .change_virtual_intf = rndis_change_virtual_intf,
592         .scan = rndis_scan,
593         .set_wiphy_params = rndis_set_wiphy_params,
594         .set_tx_power = rndis_set_tx_power,
595         .get_tx_power = rndis_get_tx_power,
596         .connect = rndis_connect,
597         .disconnect = rndis_disconnect,
598         .join_ibss = rndis_join_ibss,
599         .leave_ibss = rndis_leave_ibss,
600         .set_channel = rndis_set_channel,
601         .add_key = rndis_add_key,
602         .del_key = rndis_del_key,
603         .set_default_key = rndis_set_default_key,
604         .get_station = rndis_get_station,
605         .dump_station = rndis_dump_station,
606         .set_pmksa = rndis_set_pmksa,
607         .del_pmksa = rndis_del_pmksa,
608         .flush_pmksa = rndis_flush_pmksa,
609         .set_power_mgmt = rndis_set_power_mgmt,
610         .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
611 };
612
613 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
614
615
616 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
617 {
618         return (struct rndis_wlan_private *)dev->driver_priv;
619 }
620
621 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
622 {
623         switch (priv->param_power_output) {
624         default:
625         case 3:
626                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
627         case 2:
628                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
629         case 1:
630                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
631         case 0:
632                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
633         }
634 }
635
636 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
637 {
638         int cipher = priv->encr_keys[idx].cipher;
639
640         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
641                 cipher == WLAN_CIPHER_SUITE_TKIP);
642 }
643
644 static int rndis_cipher_to_alg(u32 cipher)
645 {
646         switch (cipher) {
647         default:
648                 return RNDIS_WLAN_ALG_NONE;
649         case WLAN_CIPHER_SUITE_WEP40:
650         case WLAN_CIPHER_SUITE_WEP104:
651                 return RNDIS_WLAN_ALG_WEP;
652         case WLAN_CIPHER_SUITE_TKIP:
653                 return RNDIS_WLAN_ALG_TKIP;
654         case WLAN_CIPHER_SUITE_CCMP:
655                 return RNDIS_WLAN_ALG_CCMP;
656         }
657 }
658
659 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
660 {
661         switch (akm_suite) {
662         default:
663                 return RNDIS_WLAN_KEY_MGMT_NONE;
664         case WLAN_AKM_SUITE_8021X:
665                 return RNDIS_WLAN_KEY_MGMT_802_1X;
666         case WLAN_AKM_SUITE_PSK:
667                 return RNDIS_WLAN_KEY_MGMT_PSK;
668         }
669 }
670
671 #ifdef DEBUG
672 static const char *oid_to_string(__le32 oid)
673 {
674         switch (oid) {
675 #define OID_STR(oid) case oid: return(#oid)
676                 /* from rndis_host.h */
677                 OID_STR(OID_802_3_PERMANENT_ADDRESS);
678                 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
679                 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
680                 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
681
682                 /* from rndis_wlan.c */
683                 OID_STR(OID_GEN_LINK_SPEED);
684                 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
685
686                 OID_STR(OID_GEN_XMIT_OK);
687                 OID_STR(OID_GEN_RCV_OK);
688                 OID_STR(OID_GEN_XMIT_ERROR);
689                 OID_STR(OID_GEN_RCV_ERROR);
690                 OID_STR(OID_GEN_RCV_NO_BUFFER);
691
692                 OID_STR(OID_802_3_CURRENT_ADDRESS);
693                 OID_STR(OID_802_3_MULTICAST_LIST);
694                 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
695
696                 OID_STR(OID_802_11_BSSID);
697                 OID_STR(OID_802_11_SSID);
698                 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
699                 OID_STR(OID_802_11_ADD_WEP);
700                 OID_STR(OID_802_11_REMOVE_WEP);
701                 OID_STR(OID_802_11_DISASSOCIATE);
702                 OID_STR(OID_802_11_AUTHENTICATION_MODE);
703                 OID_STR(OID_802_11_PRIVACY_FILTER);
704                 OID_STR(OID_802_11_BSSID_LIST_SCAN);
705                 OID_STR(OID_802_11_ENCRYPTION_STATUS);
706                 OID_STR(OID_802_11_ADD_KEY);
707                 OID_STR(OID_802_11_REMOVE_KEY);
708                 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
709                 OID_STR(OID_802_11_CAPABILITY);
710                 OID_STR(OID_802_11_PMKID);
711                 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
712                 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
713                 OID_STR(OID_802_11_TX_POWER_LEVEL);
714                 OID_STR(OID_802_11_RSSI);
715                 OID_STR(OID_802_11_RSSI_TRIGGER);
716                 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
717                 OID_STR(OID_802_11_RTS_THRESHOLD);
718                 OID_STR(OID_802_11_SUPPORTED_RATES);
719                 OID_STR(OID_802_11_CONFIGURATION);
720                 OID_STR(OID_802_11_POWER_MODE);
721                 OID_STR(OID_802_11_BSSID_LIST);
722 #undef OID_STR
723         }
724
725         return "?";
726 }
727 #else
728 static const char *oid_to_string(__le32 oid)
729 {
730         return "?";
731 }
732 #endif
733
734 /* translate error code */
735 static int rndis_error_status(__le32 rndis_status)
736 {
737         int ret = -EINVAL;
738         switch (rndis_status) {
739         case RNDIS_STATUS_SUCCESS:
740                 ret = 0;
741                 break;
742         case RNDIS_STATUS_FAILURE:
743         case RNDIS_STATUS_INVALID_DATA:
744                 ret = -EINVAL;
745                 break;
746         case RNDIS_STATUS_NOT_SUPPORTED:
747                 ret = -EOPNOTSUPP;
748                 break;
749         case RNDIS_STATUS_ADAPTER_NOT_READY:
750         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
751                 ret = -EBUSY;
752                 break;
753         }
754         return ret;
755 }
756
757 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
758 {
759         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
760         union {
761                 void                    *buf;
762                 struct rndis_msg_hdr    *header;
763                 struct rndis_query      *get;
764                 struct rndis_query_c    *get_c;
765         } u;
766         int ret, buflen;
767         int resplen, respoffs, copylen;
768
769         buflen = *len + sizeof(*u.get);
770         if (buflen < CONTROL_BUFFER_SIZE)
771                 buflen = CONTROL_BUFFER_SIZE;
772
773         if (buflen > COMMAND_BUFFER_SIZE) {
774                 u.buf = kmalloc(buflen, GFP_KERNEL);
775                 if (!u.buf)
776                         return -ENOMEM;
777         } else {
778                 u.buf = priv->command_buffer;
779         }
780
781         mutex_lock(&priv->command_lock);
782
783         memset(u.get, 0, sizeof *u.get);
784         u.get->msg_type = RNDIS_MSG_QUERY;
785         u.get->msg_len = cpu_to_le32(sizeof *u.get);
786         u.get->oid = oid;
787
788         priv->current_command_oid = oid;
789         ret = rndis_command(dev, u.header, buflen);
790         priv->current_command_oid = 0;
791         if (ret < 0)
792                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
793                            __func__, oid_to_string(oid), ret,
794                            le32_to_cpu(u.get_c->status));
795
796         if (ret == 0) {
797                 resplen = le32_to_cpu(u.get_c->len);
798                 respoffs = le32_to_cpu(u.get_c->offset) + 8;
799
800                 if (respoffs > buflen) {
801                         /* Device returned data offset outside buffer, error. */
802                         netdev_dbg(dev->net, "%s(%s): received invalid "
803                                 "data offset: %d > %d\n", __func__,
804                                 oid_to_string(oid), respoffs, buflen);
805
806                         ret = -EINVAL;
807                         goto exit_unlock;
808                 }
809
810                 if ((resplen + respoffs) > buflen) {
811                         /* Device would have returned more data if buffer would
812                          * have been big enough. Copy just the bits that we got.
813                          */
814                         copylen = buflen - respoffs;
815                 } else {
816                         copylen = resplen;
817                 }
818
819                 if (copylen > *len)
820                         copylen = *len;
821
822                 memcpy(data, u.buf + respoffs, copylen);
823
824                 *len = resplen;
825
826                 ret = rndis_error_status(u.get_c->status);
827                 if (ret < 0)
828                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
829                                    __func__, oid_to_string(oid),
830                                    le32_to_cpu(u.get_c->status), ret);
831         }
832
833 exit_unlock:
834         mutex_unlock(&priv->command_lock);
835
836         if (u.buf != priv->command_buffer)
837                 kfree(u.buf);
838         return ret;
839 }
840
841 static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
842                          int len)
843 {
844         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
845         union {
846                 void                    *buf;
847                 struct rndis_msg_hdr    *header;
848                 struct rndis_set        *set;
849                 struct rndis_set_c      *set_c;
850         } u;
851         int ret, buflen;
852
853         buflen = len + sizeof(*u.set);
854         if (buflen < CONTROL_BUFFER_SIZE)
855                 buflen = CONTROL_BUFFER_SIZE;
856
857         if (buflen > COMMAND_BUFFER_SIZE) {
858                 u.buf = kmalloc(buflen, GFP_KERNEL);
859                 if (!u.buf)
860                         return -ENOMEM;
861         } else {
862                 u.buf = priv->command_buffer;
863         }
864
865         mutex_lock(&priv->command_lock);
866
867         memset(u.set, 0, sizeof *u.set);
868         u.set->msg_type = RNDIS_MSG_SET;
869         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
870         u.set->oid = oid;
871         u.set->len = cpu_to_le32(len);
872         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
873         u.set->handle = cpu_to_le32(0);
874         memcpy(u.buf + sizeof(*u.set), data, len);
875
876         priv->current_command_oid = oid;
877         ret = rndis_command(dev, u.header, buflen);
878         priv->current_command_oid = 0;
879         if (ret < 0)
880                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
881                            __func__, oid_to_string(oid), ret,
882                            le32_to_cpu(u.set_c->status));
883
884         if (ret == 0) {
885                 ret = rndis_error_status(u.set_c->status);
886
887                 if (ret < 0)
888                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
889                                    __func__, oid_to_string(oid),
890                                    le32_to_cpu(u.set_c->status), ret);
891         }
892
893         mutex_unlock(&priv->command_lock);
894
895         if (u.buf != priv->command_buffer)
896                 kfree(u.buf);
897         return ret;
898 }
899
900 static int rndis_reset(struct usbnet *usbdev)
901 {
902         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
903         struct rndis_reset *reset;
904         int ret;
905
906         mutex_lock(&priv->command_lock);
907
908         reset = (void *)priv->command_buffer;
909         memset(reset, 0, sizeof(*reset));
910         reset->msg_type = RNDIS_MSG_RESET;
911         reset->msg_len = cpu_to_le32(sizeof(*reset));
912         priv->current_command_oid = 0;
913         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
914
915         mutex_unlock(&priv->command_lock);
916
917         if (ret < 0)
918                 return ret;
919         return 0;
920 }
921
922 /*
923  * Specs say that we can only set config parameters only soon after device
924  * initialization.
925  *   value_type: 0 = u32, 2 = unicode string
926  */
927 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
928                                                 int value_type, void *value)
929 {
930         struct ndis_config_param *infobuf;
931         int value_len, info_len, param_len, ret, i;
932         __le16 *unibuf;
933         __le32 *dst_value;
934
935         if (value_type == 0)
936                 value_len = sizeof(__le32);
937         else if (value_type == 2)
938                 value_len = strlen(value) * sizeof(__le16);
939         else
940                 return -EINVAL;
941
942         param_len = strlen(param) * sizeof(__le16);
943         info_len = sizeof(*infobuf) + param_len + value_len;
944
945 #ifdef DEBUG
946         info_len += 12;
947 #endif
948         infobuf = kmalloc(info_len, GFP_KERNEL);
949         if (!infobuf)
950                 return -ENOMEM;
951
952 #ifdef DEBUG
953         info_len -= 12;
954         /* extra 12 bytes are for padding (debug output) */
955         memset(infobuf, 0xCC, info_len + 12);
956 #endif
957
958         if (value_type == 2)
959                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
960                            param, (u8 *)value);
961         else
962                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
963                            param, *(u32 *)value);
964
965         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
966         infobuf->name_length = cpu_to_le32(param_len);
967         infobuf->type = cpu_to_le32(value_type);
968         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
969         infobuf->value_length = cpu_to_le32(value_len);
970
971         /* simple string to unicode string conversion */
972         unibuf = (void *)infobuf + sizeof(*infobuf);
973         for (i = 0; i < param_len / sizeof(__le16); i++)
974                 unibuf[i] = cpu_to_le16(param[i]);
975
976         if (value_type == 2) {
977                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
978                 for (i = 0; i < value_len / sizeof(__le16); i++)
979                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
980         } else {
981                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
982                 *dst_value = cpu_to_le32(*(u32 *)value);
983         }
984
985 #ifdef DEBUG
986         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
987         for (i = 0; i < info_len; i += 12) {
988                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
989                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
990                            cpu_to_be32(tmp[0]),
991                            cpu_to_be32(tmp[1]),
992                            cpu_to_be32(tmp[2]));
993         }
994 #endif
995
996         ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
997                                                         infobuf, info_len);
998         if (ret != 0)
999                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
1000                            ret);
1001
1002         kfree(infobuf);
1003         return ret;
1004 }
1005
1006 static int rndis_set_config_parameter_str(struct usbnet *dev,
1007                                                 char *param, char *value)
1008 {
1009         return rndis_set_config_parameter(dev, param, 2, value);
1010 }
1011
1012 /*
1013  * data conversion functions
1014  */
1015 static int level_to_qual(int level)
1016 {
1017         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
1018         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
1019 }
1020
1021 /*
1022  * common functions
1023  */
1024 static int set_infra_mode(struct usbnet *usbdev, int mode);
1025 static void restore_keys(struct usbnet *usbdev);
1026 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1027                                         bool *matched);
1028
1029 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1030 {
1031         __le32 tmp;
1032
1033         /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1034         tmp = cpu_to_le32(1);
1035         return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1036                                                         sizeof(tmp));
1037 }
1038
1039 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1040 {
1041         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1042         int ret;
1043
1044         ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1045         if (ret < 0) {
1046                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1047                 return ret;
1048         }
1049         if (ret == 0) {
1050                 priv->radio_on = true;
1051                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1052         }
1053
1054         return ret;
1055 }
1056
1057 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1058 {
1059         int ret;
1060
1061         ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1062         if (ret < 0) {
1063                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1064                             bssid, ret);
1065                 return ret;
1066         }
1067
1068         return ret;
1069 }
1070
1071 static int clear_bssid(struct usbnet *usbdev)
1072 {
1073         static const u8 broadcast_mac[ETH_ALEN] = {
1074                 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1075         };
1076
1077         return set_bssid(usbdev, broadcast_mac);
1078 }
1079
1080 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1081 {
1082         int ret, len;
1083
1084         len = ETH_ALEN;
1085         ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1086
1087         if (ret != 0)
1088                 memset(bssid, 0, ETH_ALEN);
1089
1090         return ret;
1091 }
1092
1093 static int get_association_info(struct usbnet *usbdev,
1094                         struct ndis_80211_assoc_info *info, int len)
1095 {
1096         return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1097                                 info, &len);
1098 }
1099
1100 static bool is_associated(struct usbnet *usbdev)
1101 {
1102         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1103         u8 bssid[ETH_ALEN];
1104         int ret;
1105
1106         if (!priv->radio_on)
1107                 return false;
1108
1109         ret = get_bssid(usbdev, bssid);
1110
1111         return (ret == 0 && !is_zero_ether_addr(bssid));
1112 }
1113
1114 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1115 {
1116         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1117         struct ndis_80211_ssid ssid;
1118         int i, ret = 0;
1119
1120         if (priv->radio_on) {
1121                 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1122                 if (ret == 0) {
1123                         priv->radio_on = false;
1124                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1125                                    __func__);
1126
1127                         if (reset_ssid)
1128                                 msleep(100);
1129                 }
1130         }
1131
1132         /* disassociate causes radio to be turned off; if reset_ssid
1133          * is given, set random ssid to enable radio */
1134         if (reset_ssid) {
1135                 /* Set device to infrastructure mode so we don't get ad-hoc
1136                  * 'media connect' indications with the random ssid.
1137                  */
1138                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1139
1140                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1141                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1142                 ssid.essid[0] = 0x1;
1143                 ssid.essid[1] = 0xff;
1144                 for (i = 2; i < sizeof(ssid.essid); i++)
1145                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1146                 ret = set_essid(usbdev, &ssid);
1147         }
1148         return ret;
1149 }
1150
1151 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1152                                 enum nl80211_auth_type auth_type, int keymgmt)
1153 {
1154         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155         __le32 tmp;
1156         int auth_mode, ret;
1157
1158         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1159                    __func__, wpa_version, auth_type, keymgmt);
1160
1161         if (wpa_version & NL80211_WPA_VERSION_2) {
1162                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1163                         auth_mode = NDIS_80211_AUTH_WPA2;
1164                 else
1165                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1166         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1167                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1168                         auth_mode = NDIS_80211_AUTH_WPA;
1169                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1170                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1171                 else
1172                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1173         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1174                 auth_mode = NDIS_80211_AUTH_SHARED;
1175         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1176                 auth_mode = NDIS_80211_AUTH_OPEN;
1177         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1178                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1179         else
1180                 return -ENOTSUPP;
1181
1182         tmp = cpu_to_le32(auth_mode);
1183         ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1184                                                                 sizeof(tmp));
1185         if (ret != 0) {
1186                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1187                             ret);
1188                 return ret;
1189         }
1190
1191         priv->wpa_version = wpa_version;
1192
1193         return 0;
1194 }
1195
1196 static int set_priv_filter(struct usbnet *usbdev)
1197 {
1198         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1199         __le32 tmp;
1200
1201         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1202                    __func__, priv->wpa_version);
1203
1204         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1205             priv->wpa_version & NL80211_WPA_VERSION_1)
1206                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1207         else
1208                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1209
1210         return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1211                                                                 sizeof(tmp));
1212 }
1213
1214 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1215 {
1216         __le32 tmp;
1217         int encr_mode, ret;
1218
1219         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1220                    __func__, pairwise, groupwise);
1221
1222         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1223                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1224         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1225                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1226         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1227                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1228         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1229                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1230         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1231                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1232         else
1233                 encr_mode = NDIS_80211_ENCR_DISABLED;
1234
1235         tmp = cpu_to_le32(encr_mode);
1236         ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1237                                                                 sizeof(tmp));
1238         if (ret != 0) {
1239                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1240                             ret);
1241                 return ret;
1242         }
1243
1244         return 0;
1245 }
1246
1247 static int set_infra_mode(struct usbnet *usbdev, int mode)
1248 {
1249         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1250         __le32 tmp;
1251         int ret;
1252
1253         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1254                    __func__, priv->infra_mode);
1255
1256         tmp = cpu_to_le32(mode);
1257         ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1258                                                                 sizeof(tmp));
1259         if (ret != 0) {
1260                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1261                             ret);
1262                 return ret;
1263         }
1264
1265         /* NDIS drivers clear keys when infrastructure mode is
1266          * changed. But Linux tools assume otherwise. So set the
1267          * keys */
1268         restore_keys(usbdev);
1269
1270         priv->infra_mode = mode;
1271         return 0;
1272 }
1273
1274 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1275 {
1276         __le32 tmp;
1277
1278         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1279
1280         if (rts_threshold < 0 || rts_threshold > 2347)
1281                 rts_threshold = 2347;
1282
1283         tmp = cpu_to_le32(rts_threshold);
1284         return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1285                                                                 sizeof(tmp));
1286 }
1287
1288 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1289 {
1290         __le32 tmp;
1291
1292         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1293
1294         if (frag_threshold < 256 || frag_threshold > 2346)
1295                 frag_threshold = 2346;
1296
1297         tmp = cpu_to_le32(frag_threshold);
1298         return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1299                                                                 sizeof(tmp));
1300 }
1301
1302 static void set_default_iw_params(struct usbnet *usbdev)
1303 {
1304         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1305         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1306                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1307         set_priv_filter(usbdev);
1308         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1309 }
1310
1311 static int deauthenticate(struct usbnet *usbdev)
1312 {
1313         int ret;
1314
1315         ret = disassociate(usbdev, true);
1316         set_default_iw_params(usbdev);
1317         return ret;
1318 }
1319
1320 static int set_channel(struct usbnet *usbdev, int channel)
1321 {
1322         struct ndis_80211_conf config;
1323         unsigned int dsconfig;
1324         int len, ret;
1325
1326         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1327
1328         /* this OID is valid only when not associated */
1329         if (is_associated(usbdev))
1330                 return 0;
1331
1332         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1333
1334         len = sizeof(config);
1335         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1336         if (ret < 0) {
1337                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1338                            __func__);
1339                 return ret;
1340         }
1341
1342         config.ds_config = cpu_to_le32(dsconfig);
1343         ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1344                                                                 sizeof(config));
1345
1346         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1347
1348         return ret;
1349 }
1350
1351 /* index must be 0 - N, as per NDIS  */
1352 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1353                                                                 int index)
1354 {
1355         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1356         struct ndis_80211_wep_key ndis_key;
1357         u32 cipher;
1358         int ret;
1359
1360         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1361                    __func__, index, key_len);
1362
1363         if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1364                 return -EINVAL;
1365
1366         if (key_len == 5)
1367                 cipher = WLAN_CIPHER_SUITE_WEP40;
1368         else
1369                 cipher = WLAN_CIPHER_SUITE_WEP104;
1370
1371         memset(&ndis_key, 0, sizeof(ndis_key));
1372
1373         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1374         ndis_key.length = cpu_to_le32(key_len);
1375         ndis_key.index = cpu_to_le32(index);
1376         memcpy(&ndis_key.material, key, key_len);
1377
1378         if (index == priv->encr_tx_key_index) {
1379                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1380                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1381                                                         RNDIS_WLAN_ALG_NONE);
1382                 if (ret)
1383                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1384                                     ret);
1385         }
1386
1387         ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1388                                                         sizeof(ndis_key));
1389         if (ret != 0) {
1390                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1391                             index + 1, ret);
1392                 return ret;
1393         }
1394
1395         priv->encr_keys[index].len = key_len;
1396         priv->encr_keys[index].cipher = cipher;
1397         memcpy(&priv->encr_keys[index].material, key, key_len);
1398         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1399
1400         return 0;
1401 }
1402
1403 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1404                         int index, const u8 *addr, const u8 *rx_seq,
1405                         int seq_len, u32 cipher, __le32 flags)
1406 {
1407         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1408         struct ndis_80211_key ndis_key;
1409         bool is_addr_ok;
1410         int ret;
1411
1412         if (index < 0 || index >= 4) {
1413                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1414                            __func__, index);
1415                 return -EINVAL;
1416         }
1417         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1418                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1419                            __func__, key_len);
1420                 return -EINVAL;
1421         }
1422         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1423                 if (!rx_seq || seq_len <= 0) {
1424                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1425                                    __func__);
1426                         return -EINVAL;
1427                 }
1428                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1429                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1430                         return -EINVAL;
1431                 }
1432         }
1433
1434         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1435                                         !is_broadcast_ether_addr(addr);
1436         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1437                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1438                            __func__, addr);
1439                 return -EINVAL;
1440         }
1441
1442         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1443                    __func__, index,
1444                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1445                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1446                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1447
1448         memset(&ndis_key, 0, sizeof(ndis_key));
1449
1450         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1451                                 sizeof(ndis_key.material) + key_len);
1452         ndis_key.length = cpu_to_le32(key_len);
1453         ndis_key.index = cpu_to_le32(index) | flags;
1454
1455         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1456                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1457                  * different order than NDIS spec, so swap the order here. */
1458                 memcpy(ndis_key.material, key, 16);
1459                 memcpy(ndis_key.material + 16, key + 24, 8);
1460                 memcpy(ndis_key.material + 24, key + 16, 8);
1461         } else
1462                 memcpy(ndis_key.material, key, key_len);
1463
1464         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1465                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1466
1467         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1468                 /* pairwise key */
1469                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1470         } else {
1471                 /* group key */
1472                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1473                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1474                 else
1475                         get_bssid(usbdev, ndis_key.bssid);
1476         }
1477
1478         ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1479                                         le32_to_cpu(ndis_key.size));
1480         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1481                    __func__, ret);
1482         if (ret != 0)
1483                 return ret;
1484
1485         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1486         priv->encr_keys[index].len = key_len;
1487         priv->encr_keys[index].cipher = cipher;
1488         memcpy(&priv->encr_keys[index].material, key, key_len);
1489         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1490                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1491         else
1492                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1493
1494         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1495                 priv->encr_tx_key_index = index;
1496
1497         return 0;
1498 }
1499
1500 static int restore_key(struct usbnet *usbdev, int key_idx)
1501 {
1502         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1503         struct rndis_wlan_encr_key key;
1504
1505         if (is_wpa_key(priv, key_idx))
1506                 return 0;
1507
1508         key = priv->encr_keys[key_idx];
1509
1510         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1511
1512         if (key.len == 0)
1513                 return 0;
1514
1515         return add_wep_key(usbdev, key.material, key.len, key_idx);
1516 }
1517
1518 static void restore_keys(struct usbnet *usbdev)
1519 {
1520         int i;
1521
1522         for (i = 0; i < 4; i++)
1523                 restore_key(usbdev, i);
1524 }
1525
1526 static void clear_key(struct rndis_wlan_private *priv, int idx)
1527 {
1528         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1529 }
1530
1531 /* remove_key is for both wep and wpa */
1532 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1533 {
1534         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1535         struct ndis_80211_remove_key remove_key;
1536         __le32 keyindex;
1537         bool is_wpa;
1538         int ret;
1539
1540         if (priv->encr_keys[index].len == 0)
1541                 return 0;
1542
1543         is_wpa = is_wpa_key(priv, index);
1544
1545         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1546                    __func__, index, is_wpa ? "wpa" : "wep",
1547                    priv->encr_keys[index].len);
1548
1549         clear_key(priv, index);
1550
1551         if (is_wpa) {
1552                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1553                 remove_key.index = cpu_to_le32(index);
1554                 if (bssid) {
1555                         /* pairwise key */
1556                         if (!is_broadcast_ether_addr(bssid))
1557                                 remove_key.index |=
1558                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1559                         memcpy(remove_key.bssid, bssid,
1560                                         sizeof(remove_key.bssid));
1561                 } else
1562                         memset(remove_key.bssid, 0xff,
1563                                                 sizeof(remove_key.bssid));
1564
1565                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1566                                                         sizeof(remove_key));
1567                 if (ret != 0)
1568                         return ret;
1569         } else {
1570                 keyindex = cpu_to_le32(index);
1571                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1572                                                         sizeof(keyindex));
1573                 if (ret != 0) {
1574                         netdev_warn(usbdev->net,
1575                                     "removing encryption key %d failed (%08X)\n",
1576                                     index, ret);
1577                         return ret;
1578                 }
1579         }
1580
1581         /* if it is transmit key, disable encryption */
1582         if (index == priv->encr_tx_key_index)
1583                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1584
1585         return 0;
1586 }
1587
1588 static void set_multicast_list(struct usbnet *usbdev)
1589 {
1590         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1591         struct netdev_hw_addr *ha;
1592         __le32 filter, basefilter;
1593         int ret;
1594         char *mc_addrs = NULL;
1595         int mc_count;
1596
1597         basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1598                               RNDIS_PACKET_TYPE_BROADCAST;
1599
1600         if (usbdev->net->flags & IFF_PROMISC) {
1601                 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1602                         RNDIS_PACKET_TYPE_ALL_LOCAL;
1603         } else if (usbdev->net->flags & IFF_ALLMULTI) {
1604                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1605         }
1606
1607         if (filter != basefilter)
1608                 goto set_filter;
1609
1610         /*
1611          * mc_list should be accessed holding the lock, so copy addresses to
1612          * local buffer first.
1613          */
1614         netif_addr_lock_bh(usbdev->net);
1615         mc_count = netdev_mc_count(usbdev->net);
1616         if (mc_count > priv->multicast_size) {
1617                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1618         } else if (mc_count) {
1619                 int i = 0;
1620
1621                 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1622                 if (!mc_addrs) {
1623                         netdev_warn(usbdev->net,
1624                                     "couldn't alloc %d bytes of memory\n",
1625                                     mc_count * ETH_ALEN);
1626                         netif_addr_unlock_bh(usbdev->net);
1627                         return;
1628                 }
1629
1630                 netdev_for_each_mc_addr(ha, usbdev->net)
1631                         memcpy(mc_addrs + i++ * ETH_ALEN,
1632                                ha->addr, ETH_ALEN);
1633         }
1634         netif_addr_unlock_bh(usbdev->net);
1635
1636         if (filter != basefilter)
1637                 goto set_filter;
1638
1639         if (mc_count) {
1640                 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1641                                     mc_count * ETH_ALEN);
1642                 kfree(mc_addrs);
1643                 if (ret == 0)
1644                         filter |= RNDIS_PACKET_TYPE_MULTICAST;
1645                 else
1646                         filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1647
1648                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1649                            mc_count, priv->multicast_size, ret);
1650         }
1651
1652 set_filter:
1653         ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1654                                                         sizeof(filter));
1655         if (ret < 0) {
1656                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1657                             le32_to_cpu(filter));
1658         }
1659
1660         netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1661                    le32_to_cpu(filter), ret);
1662 }
1663
1664 #ifdef DEBUG
1665 static void debug_print_pmkids(struct usbnet *usbdev,
1666                                 struct ndis_80211_pmkid *pmkids,
1667                                 const char *func_str)
1668 {
1669         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1670         int i, len, count, max_pmkids, entry_len;
1671
1672         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1673         len = le32_to_cpu(pmkids->length);
1674         count = le32_to_cpu(pmkids->bssid_info_count);
1675
1676         entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1677
1678         netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1679                                 "%d)\n", func_str, count, len, entry_len);
1680
1681         if (count > max_pmkids)
1682                 count = max_pmkids;
1683
1684         for (i = 0; i < count; i++) {
1685                 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1686
1687                 netdev_dbg(usbdev->net, "%s():  bssid: %pM, "
1688                                 "pmkid: %08X:%08X:%08X:%08X\n",
1689                                 func_str, pmkids->bssid_info[i].bssid,
1690                                 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1691                                 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1692         }
1693 }
1694 #else
1695 static void debug_print_pmkids(struct usbnet *usbdev,
1696                                 struct ndis_80211_pmkid *pmkids,
1697                                 const char *func_str)
1698 {
1699         return;
1700 }
1701 #endif
1702
1703 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1704 {
1705         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1706         struct ndis_80211_pmkid *pmkids;
1707         int len, ret, max_pmkids;
1708
1709         max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1710         len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1711
1712         pmkids = kzalloc(len, GFP_KERNEL);
1713         if (!pmkids)
1714                 return ERR_PTR(-ENOMEM);
1715
1716         pmkids->length = cpu_to_le32(len);
1717         pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1718
1719         ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1720         if (ret < 0) {
1721                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1722                                 " -> %d\n", __func__, len, max_pmkids, ret);
1723
1724                 kfree(pmkids);
1725                 return ERR_PTR(ret);
1726         }
1727
1728         if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1729                 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1730
1731         debug_print_pmkids(usbdev, pmkids, __func__);
1732
1733         return pmkids;
1734 }
1735
1736 static int set_device_pmkids(struct usbnet *usbdev,
1737                                 struct ndis_80211_pmkid *pmkids)
1738 {
1739         int ret, len, num_pmkids;
1740
1741         num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1742         len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1743         pmkids->length = cpu_to_le32(len);
1744
1745         debug_print_pmkids(usbdev, pmkids, __func__);
1746
1747         ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1748                                                 le32_to_cpu(pmkids->length));
1749         if (ret < 0) {
1750                 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1751                                 "\n", __func__, len, num_pmkids, ret);
1752         }
1753
1754         kfree(pmkids);
1755         return ret;
1756 }
1757
1758 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1759                                                 struct ndis_80211_pmkid *pmkids,
1760                                                 struct cfg80211_pmksa *pmksa,
1761                                                 int max_pmkids)
1762 {
1763         int i, len, count, newlen, err;
1764
1765         len = le32_to_cpu(pmkids->length);
1766         count = le32_to_cpu(pmkids->bssid_info_count);
1767
1768         if (count > max_pmkids)
1769                 count = max_pmkids;
1770
1771         for (i = 0; i < count; i++)
1772                 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1773                                                         pmksa->bssid))
1774                         break;
1775
1776         /* pmkid not found */
1777         if (i == count) {
1778                 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1779                                         __func__, pmksa->bssid);
1780                 err = -ENOENT;
1781                 goto error;
1782         }
1783
1784         for (; i + 1 < count; i++)
1785                 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1786
1787         count--;
1788         newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1789
1790         pmkids->length = cpu_to_le32(newlen);
1791         pmkids->bssid_info_count = cpu_to_le32(count);
1792
1793         return pmkids;
1794 error:
1795         kfree(pmkids);
1796         return ERR_PTR(err);
1797 }
1798
1799 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1800                                                 struct ndis_80211_pmkid *pmkids,
1801                                                 struct cfg80211_pmksa *pmksa,
1802                                                 int max_pmkids)
1803 {
1804         int i, err, len, count, newlen;
1805
1806         len = le32_to_cpu(pmkids->length);
1807         count = le32_to_cpu(pmkids->bssid_info_count);
1808
1809         if (count > max_pmkids)
1810                 count = max_pmkids;
1811
1812         /* update with new pmkid */
1813         for (i = 0; i < count; i++) {
1814                 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1815                                                         pmksa->bssid))
1816                         continue;
1817
1818                 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1819                                                                 WLAN_PMKID_LEN);
1820
1821                 return pmkids;
1822         }
1823
1824         /* out of space, return error */
1825         if (i == max_pmkids) {
1826                 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1827                 err = -ENOSPC;
1828                 goto error;
1829         }
1830
1831         /* add new pmkid */
1832         newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1833
1834         pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1835         if (!pmkids) {
1836                 err = -ENOMEM;
1837                 goto error;
1838         }
1839
1840         pmkids->length = cpu_to_le32(newlen);
1841         pmkids->bssid_info_count = cpu_to_le32(count + 1);
1842
1843         memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1844         memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1845
1846         return pmkids;
1847 error:
1848         kfree(pmkids);
1849         return ERR_PTR(err);
1850 }
1851
1852 /*
1853  * cfg80211 ops
1854  */
1855 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1856                                         struct net_device *dev,
1857                                         enum nl80211_iftype type, u32 *flags,
1858                                         struct vif_params *params)
1859 {
1860         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1861         struct usbnet *usbdev = priv->usbdev;
1862         int mode;
1863
1864         switch (type) {
1865         case NL80211_IFTYPE_ADHOC:
1866                 mode = NDIS_80211_INFRA_ADHOC;
1867                 break;
1868         case NL80211_IFTYPE_STATION:
1869                 mode = NDIS_80211_INFRA_INFRA;
1870                 break;
1871         default:
1872                 return -EINVAL;
1873         }
1874
1875         priv->wdev.iftype = type;
1876
1877         return set_infra_mode(usbdev, mode);
1878 }
1879
1880 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1881 {
1882         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1883         struct usbnet *usbdev = priv->usbdev;
1884         int err;
1885
1886         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1887                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1888                 if (err < 0)
1889                         return err;
1890         }
1891
1892         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1893                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1894                 if (err < 0)
1895                         return err;
1896         }
1897
1898         return 0;
1899 }
1900
1901 static int rndis_set_tx_power(struct wiphy *wiphy,
1902                               enum nl80211_tx_power_setting type,
1903                               int mbm)
1904 {
1905         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1906         struct usbnet *usbdev = priv->usbdev;
1907
1908         netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1909                    __func__, type, mbm);
1910
1911         if (mbm < 0 || (mbm % 100))
1912                 return -ENOTSUPP;
1913
1914         /* Device doesn't support changing txpower after initialization, only
1915          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1916          * currently used.
1917          */
1918         if (type == NL80211_TX_POWER_AUTOMATIC ||
1919             MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1920                 if (!priv->radio_on)
1921                         disassociate(usbdev, true); /* turn on radio */
1922
1923                 return 0;
1924         }
1925
1926         return -ENOTSUPP;
1927 }
1928
1929 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1930 {
1931         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1932         struct usbnet *usbdev = priv->usbdev;
1933
1934         *dbm = get_bcm4320_power_dbm(priv);
1935
1936         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1937
1938         return 0;
1939 }
1940
1941 #define SCAN_DELAY_JIFFIES (6 * HZ)
1942 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1943                         struct cfg80211_scan_request *request)
1944 {
1945         struct usbnet *usbdev = netdev_priv(dev);
1946         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1947         int ret;
1948         int delay = SCAN_DELAY_JIFFIES;
1949
1950         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1951
1952         /* Get current bssid list from device before new scan, as new scan
1953          * clears internal bssid list.
1954          */
1955         rndis_check_bssid_list(usbdev, NULL, NULL);
1956
1957         if (!request)
1958                 return -EINVAL;
1959
1960         if (priv->scan_request && priv->scan_request != request)
1961                 return -EBUSY;
1962
1963         priv->scan_request = request;
1964
1965         ret = rndis_start_bssid_list_scan(usbdev);
1966         if (ret == 0) {
1967                 if (priv->device_type == RNDIS_BCM4320A)
1968                         delay = HZ;
1969
1970                 /* Wait before retrieving scan results from device */
1971                 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1972         }
1973
1974         return ret;
1975 }
1976
1977 static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1978                                         struct ndis_80211_bssid_ex *bssid)
1979 {
1980         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1981         struct ieee80211_channel *channel;
1982         s32 signal;
1983         u64 timestamp;
1984         u16 capability;
1985         u16 beacon_interval;
1986         struct ndis_80211_fixed_ies *fixed;
1987         int ie_len, bssid_len;
1988         u8 *ie;
1989
1990         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1991                    bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1992
1993         /* parse bssid structure */
1994         bssid_len = le32_to_cpu(bssid->length);
1995
1996         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1997                         sizeof(struct ndis_80211_fixed_ies))
1998                 return NULL;
1999
2000         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2001
2002         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2003         ie_len = min(bssid_len - (int)sizeof(*bssid),
2004                                         (int)le32_to_cpu(bssid->ie_length));
2005         ie_len -= sizeof(struct ndis_80211_fixed_ies);
2006         if (ie_len < 0)
2007                 return NULL;
2008
2009         /* extract data for cfg80211_inform_bss */
2010         channel = ieee80211_get_channel(priv->wdev.wiphy,
2011                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2012         if (!channel)
2013                 return NULL;
2014
2015         signal = level_to_qual(le32_to_cpu(bssid->rssi));
2016         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2017         capability = le16_to_cpu(fixed->capabilities);
2018         beacon_interval = le16_to_cpu(fixed->beacon_interval);
2019
2020         return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2021                 timestamp, capability, beacon_interval, ie, ie_len, signal,
2022                 GFP_KERNEL);
2023 }
2024
2025 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2026                                         struct ndis_80211_bssid_ex *bssid,
2027                                         int *bssid_len, void *buf, int len)
2028 {
2029         void *buf_end, *bssid_end;
2030
2031         buf_end = (char *)buf + len;
2032         bssid_end = (char *)bssid + *bssid_len;
2033
2034         if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2035                 *bssid_len = 0;
2036                 return NULL;
2037         } else {
2038                 bssid = (void *)((char *)bssid + *bssid_len);
2039                 *bssid_len = le32_to_cpu(bssid->length);
2040                 return bssid;
2041         }
2042 }
2043
2044 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2045                                   int bssid_len, void *buf, int len)
2046 {
2047         void *buf_end, *bssid_end;
2048
2049         if (!bssid || bssid_len <= 0 || bssid_len > len)
2050                 return false;
2051
2052         buf_end = (char *)buf + len;
2053         bssid_end = (char *)bssid + bssid_len;
2054
2055         return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2056 }
2057
2058 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2059                                         bool *matched)
2060 {
2061         void *buf = NULL;
2062         struct ndis_80211_bssid_list_ex *bssid_list;
2063         struct ndis_80211_bssid_ex *bssid;
2064         int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2065
2066         netdev_dbg(usbdev->net, "%s()\n", __func__);
2067
2068         len = CONTROL_BUFFER_SIZE;
2069 resize_buf:
2070         buf = kzalloc(len, GFP_KERNEL);
2071         if (!buf) {
2072                 ret = -ENOMEM;
2073                 goto out;
2074         }
2075
2076         /* BSSID-list might have got bigger last time we checked, keep
2077          * resizing until it won't get any bigger.
2078          */
2079         new_len = len;
2080         ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2081         if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2082                 goto out;
2083
2084         if (new_len > len) {
2085                 len = new_len;
2086                 kfree(buf);
2087                 goto resize_buf;
2088         }
2089
2090         len = new_len;
2091
2092         bssid_list = buf;
2093         count = le32_to_cpu(bssid_list->num_items);
2094         real_count = 0;
2095         netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2096
2097         bssid_len = 0;
2098         bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2099
2100         /* Device returns incorrect 'num_items'. Workaround by ignoring the
2101          * received 'num_items' and walking through full bssid buffer instead.
2102          */
2103         while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2104                 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2105                     matched) {
2106                         if (compare_ether_addr(bssid->mac, match_bssid))
2107                                 *matched = true;
2108                 }
2109
2110                 real_count++;
2111                 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2112         }
2113
2114         netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2115                                 " %d\n", __func__, count, real_count);
2116
2117 out:
2118         kfree(buf);
2119         return ret;
2120 }
2121
2122 static void rndis_get_scan_results(struct work_struct *work)
2123 {
2124         struct rndis_wlan_private *priv =
2125                 container_of(work, struct rndis_wlan_private, scan_work.work);
2126         struct usbnet *usbdev = priv->usbdev;
2127         int ret;
2128
2129         netdev_dbg(usbdev->net, "get_scan_results\n");
2130
2131         if (!priv->scan_request)
2132                 return;
2133
2134         ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2135
2136         cfg80211_scan_done(priv->scan_request, ret < 0);
2137
2138         priv->scan_request = NULL;
2139 }
2140
2141 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2142                                         struct cfg80211_connect_params *sme)
2143 {
2144         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2145         struct usbnet *usbdev = priv->usbdev;
2146         struct ieee80211_channel *channel = sme->channel;
2147         struct ndis_80211_ssid ssid;
2148         int pairwise = RNDIS_WLAN_ALG_NONE;
2149         int groupwise = RNDIS_WLAN_ALG_NONE;
2150         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2151         int length, i, ret, chan = -1;
2152
2153         if (channel)
2154                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2155
2156         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2157         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2158                 pairwise |=
2159                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2160
2161         if (sme->crypto.n_ciphers_pairwise > 0 &&
2162                         pairwise == RNDIS_WLAN_ALG_NONE) {
2163                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2164                 return -ENOTSUPP;
2165         }
2166
2167         for (i = 0; i < sme->crypto.n_akm_suites; i++)
2168                 keymgmt |=
2169                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2170
2171         if (sme->crypto.n_akm_suites > 0 &&
2172                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2173                 netdev_err(usbdev->net, "Invalid keymgmt\n");
2174                 return -ENOTSUPP;
2175         }
2176
2177         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2178                    sme->ssid, sme->bssid, chan,
2179                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2180                    groupwise, pairwise, keymgmt);
2181
2182         if (is_associated(usbdev))
2183                 disassociate(usbdev, false);
2184
2185         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2186         if (ret < 0) {
2187                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2188                            ret);
2189                 goto err_turn_radio_on;
2190         }
2191
2192         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2193                                                                 keymgmt);
2194         if (ret < 0) {
2195                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2196                            ret);
2197                 goto err_turn_radio_on;
2198         }
2199
2200         set_priv_filter(usbdev);
2201
2202         ret = set_encr_mode(usbdev, pairwise, groupwise);
2203         if (ret < 0) {
2204                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2205                            ret);
2206                 goto err_turn_radio_on;
2207         }
2208
2209         if (channel) {
2210                 ret = set_channel(usbdev, chan);
2211                 if (ret < 0) {
2212                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2213                                    ret);
2214                         goto err_turn_radio_on;
2215                 }
2216         }
2217
2218         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2219                 priv->encr_tx_key_index = sme->key_idx;
2220                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2221                 if (ret < 0) {
2222                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2223                                    ret, sme->key_len, sme->key_idx);
2224                         goto err_turn_radio_on;
2225                 }
2226         }
2227
2228         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2229                                 !is_broadcast_ether_addr(sme->bssid)) {
2230                 ret = set_bssid(usbdev, sme->bssid);
2231                 if (ret < 0) {
2232                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2233                                    ret);
2234                         goto err_turn_radio_on;
2235                 }
2236         } else
2237                 clear_bssid(usbdev);
2238
2239         length = sme->ssid_len;
2240         if (length > NDIS_802_11_LENGTH_SSID)
2241                 length = NDIS_802_11_LENGTH_SSID;
2242
2243         memset(&ssid, 0, sizeof(ssid));
2244         ssid.length = cpu_to_le32(length);
2245         memcpy(ssid.essid, sme->ssid, length);
2246
2247         /* Pause and purge rx queue, so we don't pass packets before
2248          * 'media connect'-indication.
2249          */
2250         usbnet_pause_rx(usbdev);
2251         usbnet_purge_paused_rxq(usbdev);
2252
2253         ret = set_essid(usbdev, &ssid);
2254         if (ret < 0)
2255                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2256         return ret;
2257
2258 err_turn_radio_on:
2259         disassociate(usbdev, true);
2260
2261         return ret;
2262 }
2263
2264 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2265                                                                 u16 reason_code)
2266 {
2267         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2268         struct usbnet *usbdev = priv->usbdev;
2269
2270         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2271
2272         priv->connected = false;
2273         memset(priv->bssid, 0, ETH_ALEN);
2274
2275         return deauthenticate(usbdev);
2276 }
2277
2278 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2279                                         struct cfg80211_ibss_params *params)
2280 {
2281         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2282         struct usbnet *usbdev = priv->usbdev;
2283         struct ieee80211_channel *channel = params->channel;
2284         struct ndis_80211_ssid ssid;
2285         enum nl80211_auth_type auth_type;
2286         int ret, alg, length, chan = -1;
2287
2288         if (channel)
2289                 chan = ieee80211_frequency_to_channel(channel->center_freq);
2290
2291         /* TODO: How to handle ad-hoc encryption?
2292          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2293          * pre-shared for encryption (open/shared/wpa), is key set before
2294          * join_ibss? Which auth_type to use (not in params)? What about WPA?
2295          */
2296         if (params->privacy) {
2297                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2298                 alg = RNDIS_WLAN_ALG_WEP;
2299         } else {
2300                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2301                 alg = RNDIS_WLAN_ALG_NONE;
2302         }
2303
2304         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2305                    params->ssid, params->bssid, chan, params->privacy);
2306
2307         if (is_associated(usbdev))
2308                 disassociate(usbdev, false);
2309
2310         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2311         if (ret < 0) {
2312                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2313                            ret);
2314                 goto err_turn_radio_on;
2315         }
2316
2317         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2318         if (ret < 0) {
2319                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2320                            ret);
2321                 goto err_turn_radio_on;
2322         }
2323
2324         set_priv_filter(usbdev);
2325
2326         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2327         if (ret < 0) {
2328                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2329                            ret);
2330                 goto err_turn_radio_on;
2331         }
2332
2333         if (channel) {
2334                 ret = set_channel(usbdev, chan);
2335                 if (ret < 0) {
2336                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2337                                    ret);
2338                         goto err_turn_radio_on;
2339                 }
2340         }
2341
2342         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2343                                 !is_broadcast_ether_addr(params->bssid)) {
2344                 ret = set_bssid(usbdev, params->bssid);
2345                 if (ret < 0) {
2346                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2347                                    ret);
2348                         goto err_turn_radio_on;
2349                 }
2350         } else
2351                 clear_bssid(usbdev);
2352
2353         length = params->ssid_len;
2354         if (length > NDIS_802_11_LENGTH_SSID)
2355                 length = NDIS_802_11_LENGTH_SSID;
2356
2357         memset(&ssid, 0, sizeof(ssid));
2358         ssid.length = cpu_to_le32(length);
2359         memcpy(ssid.essid, params->ssid, length);
2360
2361         /* Don't need to pause rx queue for ad-hoc. */
2362         usbnet_purge_paused_rxq(usbdev);
2363         usbnet_resume_rx(usbdev);
2364
2365         ret = set_essid(usbdev, &ssid);
2366         if (ret < 0)
2367                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2368                            ret);
2369         return ret;
2370
2371 err_turn_radio_on:
2372         disassociate(usbdev, true);
2373
2374         return ret;
2375 }
2376
2377 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2378 {
2379         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2380         struct usbnet *usbdev = priv->usbdev;
2381
2382         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2383
2384         priv->connected = false;
2385         memset(priv->bssid, 0, ETH_ALEN);
2386
2387         return deauthenticate(usbdev);
2388 }
2389
2390 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2391         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2392 {
2393         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2394         struct usbnet *usbdev = priv->usbdev;
2395
2396         return set_channel(usbdev,
2397                         ieee80211_frequency_to_channel(chan->center_freq));
2398 }
2399
2400 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2401                          u8 key_index, bool pairwise, const u8 *mac_addr,
2402                          struct key_params *params)
2403 {
2404         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2405         struct usbnet *usbdev = priv->usbdev;
2406         __le32 flags;
2407
2408         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2409                    __func__, key_index, mac_addr, params->cipher);
2410
2411         switch (params->cipher) {
2412         case WLAN_CIPHER_SUITE_WEP40:
2413         case WLAN_CIPHER_SUITE_WEP104:
2414                 return add_wep_key(usbdev, params->key, params->key_len,
2415                                                                 key_index);
2416         case WLAN_CIPHER_SUITE_TKIP:
2417         case WLAN_CIPHER_SUITE_CCMP:
2418                 flags = 0;
2419
2420                 if (params->seq && params->seq_len > 0)
2421                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2422                 if (mac_addr)
2423                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2424                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2425
2426                 return add_wpa_key(usbdev, params->key, params->key_len,
2427                                 key_index, mac_addr, params->seq,
2428                                 params->seq_len, params->cipher, flags);
2429         default:
2430                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2431                            __func__, params->cipher);
2432                 return -ENOTSUPP;
2433         }
2434 }
2435
2436 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2437                          u8 key_index, bool pairwise, const u8 *mac_addr)
2438 {
2439         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2440         struct usbnet *usbdev = priv->usbdev;
2441
2442         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2443
2444         return remove_key(usbdev, key_index, mac_addr);
2445 }
2446
2447 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2448                                  u8 key_index, bool unicast, bool multicast)
2449 {
2450         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2451         struct usbnet *usbdev = priv->usbdev;
2452         struct rndis_wlan_encr_key key;
2453
2454         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2455
2456         priv->encr_tx_key_index = key_index;
2457
2458         if (is_wpa_key(priv, key_index))
2459                 return 0;
2460
2461         key = priv->encr_keys[key_index];
2462
2463         return add_wep_key(usbdev, key.material, key.len, key_index);
2464 }
2465
2466 static void rndis_fill_station_info(struct usbnet *usbdev,
2467                                                 struct station_info *sinfo)
2468 {
2469         __le32 linkspeed, rssi;
2470         int ret, len;
2471
2472         memset(sinfo, 0, sizeof(*sinfo));
2473
2474         len = sizeof(linkspeed);
2475         ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2476         if (ret == 0) {
2477                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2478                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2479         }
2480
2481         len = sizeof(rssi);
2482         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2483         if (ret == 0) {
2484                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2485                 sinfo->filled |= STATION_INFO_SIGNAL;
2486         }
2487 }
2488
2489 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2490                                         u8 *mac, struct station_info *sinfo)
2491 {
2492         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2493         struct usbnet *usbdev = priv->usbdev;
2494
2495         if (compare_ether_addr(priv->bssid, mac))
2496                 return -ENOENT;
2497
2498         rndis_fill_station_info(usbdev, sinfo);
2499
2500         return 0;
2501 }
2502
2503 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2504                                int idx, u8 *mac, struct station_info *sinfo)
2505 {
2506         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2507         struct usbnet *usbdev = priv->usbdev;
2508
2509         if (idx != 0)
2510                 return -ENOENT;
2511
2512         memcpy(mac, priv->bssid, ETH_ALEN);
2513
2514         rndis_fill_station_info(usbdev, sinfo);
2515
2516         return 0;
2517 }
2518
2519 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2520                                 struct cfg80211_pmksa *pmksa)
2521 {
2522         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2523         struct usbnet *usbdev = priv->usbdev;
2524         struct ndis_80211_pmkid *pmkids;
2525         u32 *tmp = (u32 *)pmksa->pmkid;
2526
2527         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2528                         pmksa->bssid,
2529                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2530                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2531
2532         pmkids = get_device_pmkids(usbdev);
2533         if (IS_ERR(pmkids)) {
2534                 /* couldn't read PMKID cache from device */
2535                 return PTR_ERR(pmkids);
2536         }
2537
2538         pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2539         if (IS_ERR(pmkids)) {
2540                 /* not found, list full, etc */
2541                 return PTR_ERR(pmkids);
2542         }
2543
2544         return set_device_pmkids(usbdev, pmkids);
2545 }
2546
2547 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2548                                 struct cfg80211_pmksa *pmksa)
2549 {
2550         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2551         struct usbnet *usbdev = priv->usbdev;
2552         struct ndis_80211_pmkid *pmkids;
2553         u32 *tmp = (u32 *)pmksa->pmkid;
2554
2555         netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2556                         pmksa->bssid,
2557                         cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2558                         cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2559
2560         pmkids = get_device_pmkids(usbdev);
2561         if (IS_ERR(pmkids)) {
2562                 /* Couldn't read PMKID cache from device */
2563                 return PTR_ERR(pmkids);
2564         }
2565
2566         pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2567         if (IS_ERR(pmkids)) {
2568                 /* not found, etc */
2569                 return PTR_ERR(pmkids);
2570         }
2571
2572         return set_device_pmkids(usbdev, pmkids);
2573 }
2574
2575 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2576 {
2577         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2578         struct usbnet *usbdev = priv->usbdev;
2579         struct ndis_80211_pmkid pmkid;
2580
2581         netdev_dbg(usbdev->net, "%s()\n", __func__);
2582
2583         memset(&pmkid, 0, sizeof(pmkid));
2584
2585         pmkid.length = cpu_to_le32(sizeof(pmkid));
2586         pmkid.bssid_info_count = cpu_to_le32(0);
2587
2588         return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2589 }
2590
2591 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2592                                 bool enabled, int timeout)
2593 {
2594         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2595         struct usbnet *usbdev = priv->usbdev;
2596         int power_mode;
2597         __le32 mode;
2598         int ret;
2599
2600         if (priv->device_type != RNDIS_BCM4320B)
2601                 return -ENOTSUPP;
2602
2603         netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2604                                 enabled ? "enabled" : "disabled",
2605                                 timeout);
2606
2607         if (enabled)
2608                 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2609         else
2610                 power_mode = NDIS_80211_POWER_MODE_CAM;
2611
2612         if (power_mode == priv->power_mode)
2613                 return 0;
2614
2615         priv->power_mode = power_mode;
2616
2617         mode = cpu_to_le32(power_mode);
2618         ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2619
2620         netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2621                                 __func__, ret);
2622
2623         return ret;
2624 }
2625
2626 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2627                                         struct net_device *dev,
2628                                         s32 rssi_thold, u32 rssi_hyst)
2629 {
2630         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2631
2632         priv->cqm_rssi_thold = rssi_thold;
2633         priv->cqm_rssi_hyst = rssi_hyst;
2634         priv->last_cqm_event_rssi = 0;
2635
2636         return 0;
2637 }
2638
2639 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2640                                            struct ndis_80211_assoc_info *info)
2641 {
2642         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2643         struct ieee80211_channel *channel;
2644         struct ndis_80211_conf config;
2645         struct ndis_80211_ssid ssid;
2646         s32 signal;
2647         u64 timestamp;
2648         u16 capability;
2649         u16 beacon_interval;
2650         __le32 rssi;
2651         u8 ie_buf[34];
2652         int len, ret, ie_len;
2653
2654         /* Get signal quality, in case of error use rssi=0 and ignore error. */
2655         len = sizeof(rssi);
2656         rssi = 0;
2657         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2658         signal = level_to_qual(le32_to_cpu(rssi));
2659
2660         netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2661                    "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2662                    level_to_qual(le32_to_cpu(rssi)));
2663
2664         /* Get AP capabilities */
2665         if (info) {
2666                 capability = le16_to_cpu(info->resp_ie.capa);
2667         } else {
2668                 /* Set atleast ESS/IBSS capability */
2669                 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2670                                 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2671         }
2672
2673         /* Get channel and beacon interval */
2674         len = sizeof(config);
2675         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
2676         netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
2677                                 __func__, ret);
2678         if (ret >= 0) {
2679                 beacon_interval = le16_to_cpu(config.beacon_period);
2680                 channel = ieee80211_get_channel(priv->wdev.wiphy,
2681                                 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
2682                 if (!channel) {
2683                         netdev_warn(usbdev->net, "%s(): could not get channel."
2684                                                  "\n", __func__);
2685                         return;
2686                 }
2687         } else {
2688                 netdev_warn(usbdev->net, "%s(): could not get configuration.\n",
2689                                          __func__);
2690                 return;
2691         }
2692
2693         /* Get SSID, in case of error, use zero length SSID and ignore error. */
2694         len = sizeof(ssid);
2695         memset(&ssid, 0, sizeof(ssid));
2696         ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2697         netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2698                                 "'%.32s'\n", __func__, ret,
2699                                 le32_to_cpu(ssid.length), ssid.essid);
2700
2701         if (le32_to_cpu(ssid.length) > 32)
2702                 ssid.length = cpu_to_le32(32);
2703
2704         ie_buf[0] = WLAN_EID_SSID;
2705         ie_buf[1] = le32_to_cpu(ssid.length);
2706         memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2707
2708         ie_len = le32_to_cpu(ssid.length) + 2;
2709
2710         /* no tsf */
2711         timestamp = 0;
2712
2713         netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2714                 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2715                 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2716                 bssid, (u32)timestamp, capability, beacon_interval, ie_len,
2717                 ssid.essid, signal);
2718
2719         cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2720                 timestamp, capability, beacon_interval, ie_buf, ie_len,
2721                 signal, GFP_KERNEL);
2722 }
2723
2724 /*
2725  * workers, indication handlers, device poller
2726  */
2727 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2728 {
2729         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2730         struct ndis_80211_assoc_info *info = NULL;
2731         u8 bssid[ETH_ALEN];
2732         int resp_ie_len, req_ie_len;
2733         u8 *req_ie, *resp_ie;
2734         int ret, offset;
2735         bool roamed = false;
2736         bool match_bss;
2737
2738         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2739                 /* received media connect indication while connected, either
2740                  * device reassociated with same AP or roamed to new. */
2741                 roamed = true;
2742         }
2743
2744         req_ie_len = 0;
2745         resp_ie_len = 0;
2746         req_ie = NULL;
2747         resp_ie = NULL;
2748
2749         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2750                 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2751                 if (!info) {
2752                         /* No memory? Try resume work later */
2753                         set_bit(WORK_LINK_UP, &priv->work_pending);
2754                         queue_work(priv->workqueue, &priv->work);
2755                         return;
2756                 }
2757
2758                 /* Get association info IEs from device. */
2759                 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2760                 if (!ret) {
2761                         req_ie_len = le32_to_cpu(info->req_ie_length);
2762                         if (req_ie_len > 0) {
2763                                 offset = le32_to_cpu(info->offset_req_ies);
2764
2765                                 if (offset > CONTROL_BUFFER_SIZE)
2766                                         offset = CONTROL_BUFFER_SIZE;
2767
2768                                 req_ie = (u8 *)info + offset;
2769
2770                                 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2771                                         req_ie_len =
2772                                                 CONTROL_BUFFER_SIZE - offset;
2773                         }
2774
2775                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2776                         if (resp_ie_len > 0) {
2777                                 offset = le32_to_cpu(info->offset_resp_ies);
2778
2779                                 if (offset > CONTROL_BUFFER_SIZE)
2780                                         offset = CONTROL_BUFFER_SIZE;
2781
2782                                 resp_ie = (u8 *)info + offset;
2783
2784                                 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2785                                         resp_ie_len =
2786                                                 CONTROL_BUFFER_SIZE - offset;
2787                         }
2788                 } else {
2789                         /* Since rndis_wlan_craft_connected_bss() might use info
2790                          * later and expects info to contain valid data if
2791                          * non-null, free info and set NULL here.
2792                          */
2793                         kfree(info);
2794                         info = NULL;
2795                 }
2796         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2797                 return;
2798
2799         ret = get_bssid(usbdev, bssid);
2800         if (ret < 0)
2801                 memset(bssid, 0, sizeof(bssid));
2802
2803         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2804                    bssid, roamed ? " roamed" : "");
2805
2806         /* Internal bss list in device should contain at least the currently
2807          * connected bss and we can get it to cfg80211 with
2808          * rndis_check_bssid_list().
2809          *
2810          * NDIS spec says: "If the device is associated, but the associated
2811          *  BSSID is not in its BSSID scan list, then the driver must add an
2812          *  entry for the BSSID at the end of the data that it returns in
2813          *  response to query of OID_802_11_BSSID_LIST."
2814          *
2815          * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2816          */
2817         match_bss = false;
2818         rndis_check_bssid_list(usbdev, bssid, &match_bss);
2819
2820         if (!is_zero_ether_addr(bssid) && !match_bss) {
2821                 /* Couldn't get bss from device, we need to manually craft bss
2822                  * for cfg80211.
2823                  */
2824                 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2825         }
2826
2827         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2828                 if (!roamed)
2829                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2830                                                 req_ie_len, resp_ie,
2831                                                 resp_ie_len, 0, GFP_KERNEL);
2832                 else
2833                         cfg80211_roamed(usbdev->net, bssid, req_ie, req_ie_len,
2834                                         resp_ie, resp_ie_len, GFP_KERNEL);
2835         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2836                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2837
2838         if (info != NULL)
2839                 kfree(info);
2840
2841         priv->connected = true;
2842         memcpy(priv->bssid, bssid, ETH_ALEN);
2843
2844         usbnet_resume_rx(usbdev);
2845         netif_carrier_on(usbdev->net);
2846 }
2847
2848 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2849 {
2850         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2851
2852         if (priv->connected) {
2853                 priv->connected = false;
2854                 memset(priv->bssid, 0, ETH_ALEN);
2855
2856                 deauthenticate(usbdev);
2857
2858                 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2859         }
2860
2861         netif_carrier_off(usbdev->net);
2862 }
2863
2864 static void rndis_wlan_worker(struct work_struct *work)
2865 {
2866         struct rndis_wlan_private *priv =
2867                 container_of(work, struct rndis_wlan_private, work);
2868         struct usbnet *usbdev = priv->usbdev;
2869
2870         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2871                 rndis_wlan_do_link_up_work(usbdev);
2872
2873         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2874                 rndis_wlan_do_link_down_work(usbdev);
2875
2876         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2877                 set_multicast_list(usbdev);
2878 }
2879
2880 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2881 {
2882         struct usbnet *usbdev = netdev_priv(dev);
2883         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2884
2885         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2886                 return;
2887
2888         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2889         queue_work(priv->workqueue, &priv->work);
2890 }
2891
2892 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2893                                 struct ndis_80211_status_indication *indication,
2894                                 int len)
2895 {
2896         u8 *buf;
2897         const char *type;
2898         int flags, buflen, key_id;
2899         bool pairwise_error, group_error;
2900         struct ndis_80211_auth_request *auth_req;
2901         enum nl80211_key_type key_type;
2902
2903         /* must have at least one array entry */
2904         if (len < offsetof(struct ndis_80211_status_indication, u) +
2905                                 sizeof(struct ndis_80211_auth_request)) {
2906                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2907                             len);
2908                 return;
2909         }
2910
2911         buf = (void *)&indication->u.auth_request[0];
2912         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2913
2914         while (buflen >= sizeof(*auth_req)) {
2915                 auth_req = (void *)buf;
2916                 type = "unknown";
2917                 flags = le32_to_cpu(auth_req->flags);
2918                 pairwise_error = false;
2919                 group_error = false;
2920
2921                 if (flags & 0x1)
2922                         type = "reauth request";
2923                 if (flags & 0x2)
2924                         type = "key update request";
2925                 if (flags & 0x6) {
2926                         pairwise_error = true;
2927                         type = "pairwise_error";
2928                 }
2929                 if (flags & 0xe) {
2930                         group_error = true;
2931                         type = "group_error";
2932                 }
2933
2934                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2935                             type, le32_to_cpu(auth_req->flags));
2936
2937                 if (pairwise_error) {
2938                         key_type = NL80211_KEYTYPE_PAIRWISE;
2939                         key_id = -1;
2940
2941                         cfg80211_michael_mic_failure(usbdev->net,
2942                                                         auth_req->bssid,
2943                                                         key_type, key_id, NULL,
2944                                                         GFP_KERNEL);
2945                 }
2946
2947                 if (group_error) {
2948                         key_type = NL80211_KEYTYPE_GROUP;
2949                         key_id = -1;
2950
2951                         cfg80211_michael_mic_failure(usbdev->net,
2952                                                         auth_req->bssid,
2953                                                         key_type, key_id, NULL,
2954                                                         GFP_KERNEL);
2955                 }
2956
2957                 buflen -= le32_to_cpu(auth_req->length);
2958                 buf += le32_to_cpu(auth_req->length);
2959         }
2960 }
2961
2962 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2963                                 struct ndis_80211_status_indication *indication,
2964                                 int len)
2965 {
2966         struct ndis_80211_pmkid_cand_list *cand_list;
2967         int list_len, expected_len, i;
2968
2969         if (len < offsetof(struct ndis_80211_status_indication, u) +
2970                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2971                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2972                             len);
2973                 return;
2974         }
2975
2976         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2977                         sizeof(struct ndis_80211_pmkid_candidate);
2978         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2979                         offsetof(struct ndis_80211_status_indication, u);
2980
2981         if (len < expected_len) {
2982                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2983                             len, expected_len);
2984                 return;
2985         }
2986
2987         cand_list = &indication->u.cand_list;
2988
2989         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2990                     le32_to_cpu(cand_list->version),
2991                     le32_to_cpu(cand_list->num_candidates));
2992
2993         if (le32_to_cpu(cand_list->version) != 1)
2994                 return;
2995
2996         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2997                 struct ndis_80211_pmkid_candidate *cand =
2998                                                 &cand_list->candidate_list[i];
2999
3000                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
3001                            i, le32_to_cpu(cand->flags), cand->bssid);
3002
3003 #if 0
3004                 struct iw_pmkid_cand pcand;
3005                 union iwreq_data wrqu;
3006
3007                 memset(&pcand, 0, sizeof(pcand));
3008                 if (le32_to_cpu(cand->flags) & 0x01)
3009                         pcand.flags |= IW_PMKID_CAND_PREAUTH;
3010                 pcand.index = i;
3011                 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
3012
3013                 memset(&wrqu, 0, sizeof(wrqu));
3014                 wrqu.data.length = sizeof(pcand);
3015                 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
3016                                                                 (u8 *)&pcand);
3017 #endif
3018         }
3019 }
3020
3021 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3022                         struct rndis_indicate *msg, int buflen)
3023 {
3024         struct ndis_80211_status_indication *indication;
3025         int len, offset;
3026
3027         offset = offsetof(struct rndis_indicate, status) +
3028                         le32_to_cpu(msg->offset);
3029         len = le32_to_cpu(msg->length);
3030
3031         if (len < 8) {
3032                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3033                             len);
3034                 return;
3035         }
3036
3037         if (offset + len > buflen) {
3038                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3039                             offset + len, buflen);
3040                 return;
3041         }
3042
3043         indication = (void *)((u8 *)msg + offset);
3044
3045         switch (le32_to_cpu(indication->status_type)) {
3046         case NDIS_80211_STATUSTYPE_RADIOSTATE:
3047                 netdev_info(usbdev->net, "radio state indication: %i\n",
3048                             le32_to_cpu(indication->u.radio_status));
3049                 return;
3050
3051         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3052                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3053                             le32_to_cpu(indication->u.media_stream_mode));
3054                 return;
3055
3056         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3057                 rndis_wlan_auth_indication(usbdev, indication, len);
3058                 return;
3059
3060         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3061                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3062                 return;
3063
3064         default:
3065                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3066                             le32_to_cpu(indication->status_type));
3067         }
3068 }
3069
3070 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3071 {
3072         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3073         struct rndis_indicate *msg = ind;
3074
3075         switch (msg->status) {
3076         case RNDIS_STATUS_MEDIA_CONNECT:
3077                 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3078                         /* OID_802_11_ADD_KEY causes sometimes extra
3079                          * "media connect" indications which confuses driver
3080                          * and userspace to think that device is
3081                          * roaming/reassociating when it isn't.
3082                          */
3083                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3084                         return;
3085                 }
3086
3087                 usbnet_pause_rx(usbdev);
3088
3089                 netdev_info(usbdev->net, "media connect\n");
3090
3091                 /* queue work to avoid recursive calls into rndis_command */
3092                 set_bit(WORK_LINK_UP, &priv->work_pending);
3093                 queue_work(priv->workqueue, &priv->work);
3094                 break;
3095
3096         case RNDIS_STATUS_MEDIA_DISCONNECT:
3097                 netdev_info(usbdev->net, "media disconnect\n");
3098
3099                 /* queue work to avoid recursive calls into rndis_command */
3100                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3101                 queue_work(priv->workqueue, &priv->work);
3102                 break;
3103
3104         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3105                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3106                 break;
3107
3108         default:
3109                 netdev_info(usbdev->net, "indication: 0x%08x\n",
3110                             le32_to_cpu(msg->status));
3111                 break;
3112         }
3113 }
3114
3115 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3116 {
3117         struct {
3118                 __le32  num_items;
3119                 __le32  items[8];
3120         } networks_supported;
3121         struct ndis_80211_capability *caps;
3122         u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3123         int len, retval, i, n;
3124         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3125
3126         /* determine supported modes */
3127         len = sizeof(networks_supported);
3128         retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3129                                                 &networks_supported, &len);
3130         if (retval >= 0) {
3131                 n = le32_to_cpu(networks_supported.num_items);
3132                 if (n > 8)
3133                         n = 8;
3134                 for (i = 0; i < n; i++) {
3135                         switch (le32_to_cpu(networks_supported.items[i])) {
3136                         case NDIS_80211_TYPE_FREQ_HOP:
3137                         case NDIS_80211_TYPE_DIRECT_SEQ:
3138                                 priv->caps |= CAP_MODE_80211B;
3139                                 break;
3140                         case NDIS_80211_TYPE_OFDM_A:
3141                                 priv->caps |= CAP_MODE_80211A;
3142                                 break;
3143                         case NDIS_80211_TYPE_OFDM_G:
3144                                 priv->caps |= CAP_MODE_80211G;
3145                                 break;
3146                         }
3147                 }
3148         }
3149
3150         /* get device 802.11 capabilities, number of PMKIDs */
3151         caps = (struct ndis_80211_capability *)caps_buf;
3152         len = sizeof(caps_buf);
3153         retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3154         if (retval >= 0) {
3155                 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3156                                 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3157                                 le32_to_cpu(caps->length),
3158                                 le32_to_cpu(caps->version),
3159                                 le32_to_cpu(caps->num_pmkids),
3160                                 le32_to_cpu(caps->num_auth_encr_pair));
3161                 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3162         } else
3163                 wiphy->max_num_pmkids = 0;
3164
3165         return retval;
3166 }
3167
3168 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3169 {
3170         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3171         enum nl80211_cqm_rssi_threshold_event event;
3172         int thold, hyst, last_event;
3173
3174         if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3175                 return;
3176         if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3177                 return;
3178
3179         last_event = priv->last_cqm_event_rssi;
3180         thold = priv->cqm_rssi_thold;
3181         hyst = priv->cqm_rssi_hyst;
3182
3183         if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3184                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3185         else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3186                 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3187         else
3188                 return;
3189
3190         priv->last_cqm_event_rssi = rssi;
3191         cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3192 }
3193
3194 #define DEVICE_POLLER_JIFFIES (HZ)
3195 static void rndis_device_poller(struct work_struct *work)
3196 {
3197         struct rndis_wlan_private *priv =
3198                 container_of(work, struct rndis_wlan_private,
3199                                                         dev_poller_work.work);
3200         struct usbnet *usbdev = priv->usbdev;
3201         __le32 rssi, tmp;
3202         int len, ret, j;
3203         int update_jiffies = DEVICE_POLLER_JIFFIES;
3204         void *buf;
3205
3206         /* Only check/do workaround when connected. Calling is_associated()
3207          * also polls device with rndis_command() and catches for media link
3208          * indications.
3209          */
3210         if (!is_associated(usbdev)) {
3211                 /* Workaround bad scanning in BCM4320a devices with active
3212                  * background scanning when not associated.
3213                  */
3214                 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3215                     !priv->scan_request) {
3216                         /* Get previous scan results */
3217                         rndis_check_bssid_list(usbdev, NULL, NULL);
3218
3219                         /* Initiate new scan */
3220                         rndis_start_bssid_list_scan(usbdev);
3221                 }
3222
3223                 goto end;
3224         }
3225
3226         len = sizeof(rssi);
3227         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3228         if (ret == 0) {
3229                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3230                 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3231         }
3232
3233         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3234                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3235
3236         /* Workaround transfer stalls on poor quality links.
3237          * TODO: find right way to fix these stalls (as stalls do not happen
3238          * with ndiswrapper/windows driver). */
3239         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3240                 /* Decrease stats worker interval to catch stalls.
3241                  * faster. Faster than 400-500ms causes packet loss,
3242                  * Slower doesn't catch stalls fast enough.
3243                  */
3244                 j = msecs_to_jiffies(priv->param_workaround_interval);
3245                 if (j > DEVICE_POLLER_JIFFIES)
3246                         j = DEVICE_POLLER_JIFFIES;
3247                 else if (j <= 0)
3248                         j = 1;
3249                 update_jiffies = j;
3250
3251                 /* Send scan OID. Use of both OIDs is required to get device
3252                  * working.
3253                  */
3254                 tmp = cpu_to_le32(1);
3255                 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3256                                                                 sizeof(tmp));
3257
3258                 len = CONTROL_BUFFER_SIZE;
3259                 buf = kmalloc(len, GFP_KERNEL);
3260                 if (!buf)
3261                         goto end;
3262
3263                 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3264                 kfree(buf);
3265         }
3266
3267 end:
3268         if (update_jiffies >= HZ)
3269                 update_jiffies = round_jiffies_relative(update_jiffies);
3270         else {
3271                 j = round_jiffies_relative(update_jiffies);
3272                 if (abs(j - update_jiffies) <= 10)
3273                         update_jiffies = j;
3274         }
3275
3276         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3277                                                                 update_jiffies);
3278 }
3279
3280 /*
3281  * driver/device initialization
3282  */
3283 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3284 {
3285         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3286
3287         priv->device_type = device_type;
3288
3289         priv->param_country[0] = modparam_country[0];
3290         priv->param_country[1] = modparam_country[1];
3291         priv->param_country[2] = 0;
3292         priv->param_frameburst   = modparam_frameburst;
3293         priv->param_afterburner  = modparam_afterburner;
3294         priv->param_power_save   = modparam_power_save;
3295         priv->param_power_output = modparam_power_output;
3296         priv->param_roamtrigger  = modparam_roamtrigger;
3297         priv->param_roamdelta    = modparam_roamdelta;
3298
3299         priv->param_country[0] = toupper(priv->param_country[0]);
3300         priv->param_country[1] = toupper(priv->param_country[1]);
3301         /* doesn't support EU as country code, use FI instead */
3302         if (!strcmp(priv->param_country, "EU"))
3303                 strcpy(priv->param_country, "FI");
3304
3305         if (priv->param_power_save < 0)
3306                 priv->param_power_save = 0;
3307         else if (priv->param_power_save > 2)
3308                 priv->param_power_save = 2;
3309
3310         if (priv->param_power_output < 0)
3311                 priv->param_power_output = 0;
3312         else if (priv->param_power_output > 3)
3313                 priv->param_power_output = 3;
3314
3315         if (priv->param_roamtrigger < -80)
3316                 priv->param_roamtrigger = -80;
3317         else if (priv->param_roamtrigger > -60)
3318                 priv->param_roamtrigger = -60;
3319
3320         if (priv->param_roamdelta < 0)
3321                 priv->param_roamdelta = 0;
3322         else if (priv->param_roamdelta > 2)
3323                 priv->param_roamdelta = 2;
3324
3325         if (modparam_workaround_interval < 0)
3326                 priv->param_workaround_interval = 500;
3327         else
3328                 priv->param_workaround_interval = modparam_workaround_interval;
3329 }
3330
3331 static int unknown_early_init(struct usbnet *usbdev)
3332 {
3333         /* copy module parameters for unknown so that iwconfig reports txpower
3334          * and workaround parameter is copied to private structure correctly.
3335          */
3336         rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3337
3338         /* This is unknown device, so do not try set configuration parameters.
3339          */
3340
3341         return 0;
3342 }
3343
3344 static int bcm4320a_early_init(struct usbnet *usbdev)
3345 {
3346         /* copy module parameters for bcm4320a so that iwconfig reports txpower
3347          * and workaround parameter is copied to private structure correctly.
3348          */
3349         rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3350
3351         /* bcm4320a doesn't handle configuration parameters well. Try
3352          * set any and you get partially zeroed mac and broken device.
3353          */
3354
3355         return 0;
3356 }
3357
3358 static int bcm4320b_early_init(struct usbnet *usbdev)
3359 {
3360         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3361         char buf[8];
3362
3363         rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3364
3365         /* Early initialization settings, setting these won't have effect
3366          * if called after generic_rndis_bind().
3367          */
3368
3369         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3370         rndis_set_config_parameter_str(usbdev, "FrameBursting",
3371                                         priv->param_frameburst ? "1" : "0");
3372         rndis_set_config_parameter_str(usbdev, "Afterburner",
3373                                         priv->param_afterburner ? "1" : "0");
3374         sprintf(buf, "%d", priv->param_power_save);
3375         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3376         sprintf(buf, "%d", priv->param_power_output);
3377         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3378         sprintf(buf, "%d", priv->param_roamtrigger);
3379         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3380         sprintf(buf, "%d", priv->param_roamdelta);
3381         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3382
3383         return 0;
3384 }
3385
3386 /* same as rndis_netdev_ops but with local multicast handler */
3387 static const struct net_device_ops rndis_wlan_netdev_ops = {
3388         .ndo_open               = usbnet_open,
3389         .ndo_stop               = usbnet_stop,
3390         .ndo_start_xmit         = usbnet_start_xmit,
3391         .ndo_tx_timeout         = usbnet_tx_timeout,
3392         .ndo_set_mac_address    = eth_mac_addr,
3393         .ndo_validate_addr      = eth_validate_addr,
3394         .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
3395 };
3396
3397 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3398 {
3399         struct wiphy *wiphy;
3400         struct rndis_wlan_private *priv;
3401         int retval, len;
3402         __le32 tmp;
3403
3404         /* allocate wiphy and rndis private data
3405          * NOTE: We only support a single virtual interface, so wiphy
3406          * and wireless_dev are somewhat synonymous for this device.
3407          */
3408         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3409         if (!wiphy)
3410                 return -ENOMEM;
3411
3412         priv = wiphy_priv(wiphy);
3413         usbdev->net->ieee80211_ptr = &priv->wdev;
3414         priv->wdev.wiphy = wiphy;
3415         priv->wdev.iftype = NL80211_IFTYPE_STATION;
3416
3417         /* These have to be initialized before calling generic_rndis_bind().
3418          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3419          */
3420         usbdev->driver_priv = priv;
3421         priv->usbdev = usbdev;
3422
3423         mutex_init(&priv->command_lock);
3424
3425         /* because rndis_command() sleeps we need to use workqueue */
3426         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3427         INIT_WORK(&priv->work, rndis_wlan_worker);
3428         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3429         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3430
3431         /* try bind rndis_host */
3432         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3433         if (retval < 0)
3434                 goto fail;
3435
3436         /* generic_rndis_bind set packet filter to multicast_all+
3437          * promisc mode which doesn't work well for our devices (device
3438          * picks up rssi to closest station instead of to access point).
3439          *
3440          * rndis_host wants to avoid all OID as much as possible
3441          * so do promisc/multicast handling in rndis_wlan.
3442          */
3443         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3444
3445         tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3446         retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3447                                                                 sizeof(tmp));
3448
3449         len = sizeof(tmp);
3450         retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3451                                                                 &len);
3452         priv->multicast_size = le32_to_cpu(tmp);
3453         if (retval < 0 || priv->multicast_size < 0)
3454                 priv->multicast_size = 0;
3455         if (priv->multicast_size > 0)
3456                 usbdev->net->flags |= IFF_MULTICAST;
3457         else
3458                 usbdev->net->flags &= ~IFF_MULTICAST;
3459
3460         /* fill-out wiphy structure and register w/ cfg80211 */
3461         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3462         wiphy->privid = rndis_wiphy_privid;
3463         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3464                                         | BIT(NL80211_IFTYPE_ADHOC);
3465         wiphy->max_scan_ssids = 1;
3466
3467         /* TODO: fill-out band/encr information based on priv->caps */
3468         rndis_wlan_get_caps(usbdev, wiphy);
3469
3470         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3471         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3472         priv->band.channels = priv->channels;
3473         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3474         priv->band.bitrates = priv->rates;
3475         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3476         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3477         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3478
3479         memcpy(priv->cipher_suites, rndis_cipher_suites,
3480                                                 sizeof(rndis_cipher_suites));
3481         wiphy->cipher_suites = priv->cipher_suites;
3482         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3483
3484         set_wiphy_dev(wiphy, &usbdev->udev->dev);
3485
3486         if (wiphy_register(wiphy)) {
3487                 retval = -ENODEV;
3488                 goto fail;
3489         }
3490
3491         set_default_iw_params(usbdev);
3492
3493         priv->power_mode = -1;
3494
3495         /* set default rts/frag */
3496         rndis_set_wiphy_params(wiphy,
3497                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3498
3499         /* turn radio off on init */
3500         priv->radio_on = false;
3501         disassociate(usbdev, false);
3502         netif_carrier_off(usbdev->net);
3503
3504         return 0;
3505
3506 fail:
3507         cancel_delayed_work_sync(&priv->dev_poller_work);
3508         cancel_delayed_work_sync(&priv->scan_work);
3509         cancel_work_sync(&priv->work);
3510         flush_workqueue(priv->workqueue);
3511         destroy_workqueue(priv->workqueue);
3512
3513         wiphy_free(wiphy);
3514         return retval;
3515 }
3516
3517 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3518 {
3519         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3520
3521         /* turn radio off */
3522         disassociate(usbdev, false);
3523
3524         cancel_delayed_work_sync(&priv->dev_poller_work);
3525         cancel_delayed_work_sync(&priv->scan_work);
3526         cancel_work_sync(&priv->work);
3527         flush_workqueue(priv->workqueue);
3528         destroy_workqueue(priv->workqueue);
3529
3530         rndis_unbind(usbdev, intf);
3531
3532         wiphy_unregister(priv->wdev.wiphy);
3533         wiphy_free(priv->wdev.wiphy);
3534 }
3535
3536 static int rndis_wlan_reset(struct usbnet *usbdev)
3537 {
3538         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3539         int retval;
3540
3541         netdev_dbg(usbdev->net, "%s()\n", __func__);
3542
3543         retval = rndis_reset(usbdev);
3544         if (retval)
3545                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3546
3547         /* rndis_reset cleared multicast list, so restore here.
3548            (set_multicast_list() also turns on current packet filter) */
3549         set_multicast_list(usbdev);
3550
3551         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3552                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3553
3554         return deauthenticate(usbdev);
3555 }
3556
3557 static int rndis_wlan_stop(struct usbnet *usbdev)
3558 {
3559         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3560         int retval;
3561         __le32 filter;
3562
3563         netdev_dbg(usbdev->net, "%s()\n", __func__);
3564
3565         retval = disassociate(usbdev, false);
3566
3567         priv->work_pending = 0;
3568         cancel_delayed_work_sync(&priv->dev_poller_work);
3569         cancel_delayed_work_sync(&priv->scan_work);
3570         cancel_work_sync(&priv->work);
3571         flush_workqueue(priv->workqueue);
3572
3573         if (priv->scan_request) {
3574                 cfg80211_scan_done(priv->scan_request, true);
3575                 priv->scan_request = NULL;
3576         }
3577
3578         /* Set current packet filter zero to block receiving data packets from
3579            device. */
3580         filter = 0;
3581         rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3582                                                                 sizeof(filter));
3583
3584         return retval;
3585 }
3586
3587 static const struct driver_info bcm4320b_info = {
3588         .description =  "Wireless RNDIS device, BCM4320b based",
3589         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3590                                 FLAG_AVOID_UNLINK_URBS,
3591         .bind =         rndis_wlan_bind,
3592         .unbind =       rndis_wlan_unbind,
3593         .status =       rndis_status,
3594         .rx_fixup =     rndis_rx_fixup,
3595         .tx_fixup =     rndis_tx_fixup,
3596         .reset =        rndis_wlan_reset,
3597         .stop =         rndis_wlan_stop,
3598         .early_init =   bcm4320b_early_init,
3599         .indication =   rndis_wlan_indication,
3600 };
3601
3602 static const struct driver_info bcm4320a_info = {
3603         .description =  "Wireless RNDIS device, BCM4320a based",
3604         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3605                                 FLAG_AVOID_UNLINK_URBS,
3606         .bind =         rndis_wlan_bind,
3607         .unbind =       rndis_wlan_unbind,
3608         .status =       rndis_status,
3609         .rx_fixup =     rndis_rx_fixup,
3610         .tx_fixup =     rndis_tx_fixup,
3611         .reset =        rndis_wlan_reset,
3612         .stop =         rndis_wlan_stop,
3613         .early_init =   bcm4320a_early_init,
3614         .indication =   rndis_wlan_indication,
3615 };
3616
3617 static const struct driver_info rndis_wlan_info = {
3618         .description =  "Wireless RNDIS device",
3619         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3620                                 FLAG_AVOID_UNLINK_URBS,
3621         .bind =         rndis_wlan_bind,
3622         .unbind =       rndis_wlan_unbind,
3623         .status =       rndis_status,
3624         .rx_fixup =     rndis_rx_fixup,
3625         .tx_fixup =     rndis_tx_fixup,
3626         .reset =        rndis_wlan_reset,
3627         .stop =         rndis_wlan_stop,
3628         .early_init =   unknown_early_init,
3629         .indication =   rndis_wlan_indication,
3630 };
3631
3632 /*-------------------------------------------------------------------------*/
3633
3634 static const struct usb_device_id products [] = {
3635 #define RNDIS_MASTER_INTERFACE \
3636         .bInterfaceClass        = USB_CLASS_COMM, \
3637         .bInterfaceSubClass     = 2 /* ACM */, \
3638         .bInterfaceProtocol     = 0x0ff
3639
3640 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3641  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3642  */
3643 {
3644         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3645                           | USB_DEVICE_ID_MATCH_DEVICE,
3646         .idVendor               = 0x0411,
3647         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
3648         RNDIS_MASTER_INTERFACE,
3649         .driver_info            = (unsigned long) &bcm4320b_info,
3650 }, {
3651         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3652                           | USB_DEVICE_ID_MATCH_DEVICE,
3653         .idVendor               = 0x0baf,
3654         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
3655         RNDIS_MASTER_INTERFACE,
3656         .driver_info            = (unsigned long) &bcm4320b_info,
3657 }, {
3658         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3659                           | USB_DEVICE_ID_MATCH_DEVICE,
3660         .idVendor               = 0x050d,
3661         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3662         RNDIS_MASTER_INTERFACE,
3663         .driver_info            = (unsigned long) &bcm4320b_info,
3664 }, {
3665         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3666                           | USB_DEVICE_ID_MATCH_DEVICE,
3667         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
3668         .idProduct              = 0x011b,       /* Belkin F5D7051 */
3669         RNDIS_MASTER_INTERFACE,
3670         .driver_info            = (unsigned long) &bcm4320b_info,
3671 }, {
3672         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3673                           | USB_DEVICE_ID_MATCH_DEVICE,
3674         .idVendor               = 0x13b1,
3675         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
3676         RNDIS_MASTER_INTERFACE,
3677         .driver_info            = (unsigned long) &bcm4320b_info,
3678 }, {
3679         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3680                           | USB_DEVICE_ID_MATCH_DEVICE,
3681         .idVendor               = 0x13b1,
3682         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3683         RNDIS_MASTER_INTERFACE,
3684         .driver_info            = (unsigned long) &bcm4320b_info,
3685 }, {
3686         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3687                           | USB_DEVICE_ID_MATCH_DEVICE,
3688         .idVendor               = 0x0b05,
3689         .idProduct              = 0x1717,       /* Asus WL169gE */
3690         RNDIS_MASTER_INTERFACE,
3691         .driver_info            = (unsigned long) &bcm4320b_info,
3692 }, {
3693         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3694                           | USB_DEVICE_ID_MATCH_DEVICE,
3695         .idVendor               = 0x0a5c,
3696         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3697         RNDIS_MASTER_INTERFACE,
3698         .driver_info            = (unsigned long) &bcm4320b_info,
3699 }, {
3700         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3701                           | USB_DEVICE_ID_MATCH_DEVICE,
3702         .idVendor               = 0x1690,
3703         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3704         RNDIS_MASTER_INTERFACE,
3705         .driver_info            = (unsigned long) &bcm4320b_info,
3706 },
3707 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3708  * parameters available, hardware probably contain older firmware version with
3709  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3710  */
3711 {
3712         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3713                           | USB_DEVICE_ID_MATCH_DEVICE,
3714         .idVendor               = 0x13b1,
3715         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3716         RNDIS_MASTER_INTERFACE,
3717         .driver_info            = (unsigned long) &bcm4320a_info,
3718 }, {
3719         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3720                           | USB_DEVICE_ID_MATCH_DEVICE,
3721         .idVendor               = 0x0baf,
3722         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3723         RNDIS_MASTER_INTERFACE,
3724         .driver_info            = (unsigned long) &bcm4320a_info,
3725 }, {
3726         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3727                           | USB_DEVICE_ID_MATCH_DEVICE,
3728         .idVendor               = 0x0411,
3729         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3730         RNDIS_MASTER_INTERFACE,
3731         .driver_info            = (unsigned long) &bcm4320a_info,
3732 },
3733 /* Generic Wireless RNDIS devices that we don't have exact
3734  * idVendor/idProduct/chip yet.
3735  */
3736 {
3737         /* RNDIS is MSFT's un-official variant of CDC ACM */
3738         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3739         .driver_info = (unsigned long) &rndis_wlan_info,
3740 }, {
3741         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3742         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3743         .driver_info = (unsigned long) &rndis_wlan_info,
3744 },
3745         { },            // END
3746 };
3747 MODULE_DEVICE_TABLE(usb, products);
3748
3749 static struct usb_driver rndis_wlan_driver = {
3750         .name =         "rndis_wlan",
3751         .id_table =     products,
3752         .probe =        usbnet_probe,
3753         .disconnect =   usbnet_disconnect,
3754         .suspend =      usbnet_suspend,
3755         .resume =       usbnet_resume,
3756 };
3757
3758 static int __init rndis_wlan_init(void)
3759 {
3760         return usb_register(&rndis_wlan_driver);
3761 }
3762 module_init(rndis_wlan_init);
3763
3764 static void __exit rndis_wlan_exit(void)
3765 {
3766         usb_deregister(&rndis_wlan_driver);
3767 }
3768 module_exit(rndis_wlan_exit);
3769
3770 MODULE_AUTHOR("Bjorge Dijkstra");
3771 MODULE_AUTHOR("Jussi Kivilinna");
3772 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3773 MODULE_LICENSE("GPL");
3774