1 /*
2 * Driver for RNDIS based wireless USB devices.
3 *
4 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
5 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Portions of this file are based on NDISwrapper project,
22 * Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
23 * http://ndiswrapper.sourceforge.net/
24 */
25
26 // #define DEBUG // error path messages, extra info
27 // #define VERBOSE // more; success messages
28
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/netdevice.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/workqueue.h>
35 #include <linux/mutex.h>
36 #include <linux/mii.h>
37 #include <linux/usb.h>
38 #include <linux/usb/cdc.h>
39 #include <linux/ieee80211.h>
40 #include <linux/if_arp.h>
41 #include <linux/ctype.h>
42 #include <linux/spinlock.h>
43 #include <linux/slab.h>
44 #include <net/cfg80211.h>
45 #include <linux/usb/usbnet.h>
46 #include <linux/usb/rndis_host.h>
47
48
49 /* NOTE: All these are settings for Broadcom chipset */
50 static char modparam_country[4] = "EU";
51 module_param_string(country, modparam_country, 4, 0444);
52 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
53
54 static int modparam_frameburst = 1;
55 module_param_named(frameburst, modparam_frameburst, int, 0444);
56 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
57
58 static int modparam_afterburner = 0;
59 module_param_named(afterburner, modparam_afterburner, int, 0444);
60 MODULE_PARM_DESC(afterburner,
61 "enable afterburner aka '125 High Speed Mode' (default: off)");
62
63 static int modparam_power_save = 0;
64 module_param_named(power_save, modparam_power_save, int, 0444);
65 MODULE_PARM_DESC(power_save,
66 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
67
68 static int modparam_power_output = 3;
69 module_param_named(power_output, modparam_power_output, int, 0444);
70 MODULE_PARM_DESC(power_output,
71 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
72
73 static int modparam_roamtrigger = -70;
74 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
75 MODULE_PARM_DESC(roamtrigger,
76 "set roaming dBm trigger: -80=optimize for distance, "
77 "-60=bandwidth (default: -70)");
78
79 static int modparam_roamdelta = 1;
80 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
81 MODULE_PARM_DESC(roamdelta,
82 "set roaming tendency: 0=aggressive, 1=moderate, "
83 "2=conservative (default: moderate)");
84
85 static int modparam_workaround_interval;
86 module_param_named(workaround_interval, modparam_workaround_interval,
87 int, 0444);
88 MODULE_PARM_DESC(workaround_interval,
89 "set stall workaround interval in msecs (0=disabled) (default: 0)");
90
91
92 /* various RNDIS OID defs */
93 #define OID_GEN_LINK_SPEED cpu_to_le32(0x00010107)
94 #define OID_GEN_RNDIS_CONFIG_PARAMETER cpu_to_le32(0x0001021b)
95
96 #define OID_GEN_XMIT_OK cpu_to_le32(0x00020101)
97 #define OID_GEN_RCV_OK cpu_to_le32(0x00020102)
98 #define OID_GEN_XMIT_ERROR cpu_to_le32(0x00020103)
99 #define OID_GEN_RCV_ERROR cpu_to_le32(0x00020104)
100 #define OID_GEN_RCV_NO_BUFFER cpu_to_le32(0x00020105)
101
102 #define OID_802_3_CURRENT_ADDRESS cpu_to_le32(0x01010102)
103 #define OID_802_3_MULTICAST_LIST cpu_to_le32(0x01010103)
104 #define OID_802_3_MAXIMUM_LIST_SIZE cpu_to_le32(0x01010104)
105
106 #define OID_802_11_BSSID cpu_to_le32(0x0d010101)
107 #define OID_802_11_SSID cpu_to_le32(0x0d010102)
108 #define OID_802_11_INFRASTRUCTURE_MODE cpu_to_le32(0x0d010108)
109 #define OID_802_11_ADD_WEP cpu_to_le32(0x0d010113)
110 #define OID_802_11_REMOVE_WEP cpu_to_le32(0x0d010114)
111 #define OID_802_11_DISASSOCIATE cpu_to_le32(0x0d010115)
112 #define OID_802_11_AUTHENTICATION_MODE cpu_to_le32(0x0d010118)
113 #define OID_802_11_PRIVACY_FILTER cpu_to_le32(0x0d010119)
114 #define OID_802_11_BSSID_LIST_SCAN cpu_to_le32(0x0d01011a)
115 #define OID_802_11_ENCRYPTION_STATUS cpu_to_le32(0x0d01011b)
116 #define OID_802_11_ADD_KEY cpu_to_le32(0x0d01011d)
117 #define OID_802_11_REMOVE_KEY cpu_to_le32(0x0d01011e)
118 #define OID_802_11_ASSOCIATION_INFORMATION cpu_to_le32(0x0d01011f)
119 #define OID_802_11_CAPABILITY cpu_to_le32(0x0d010122)
120 #define OID_802_11_PMKID cpu_to_le32(0x0d010123)
121 #define OID_802_11_NETWORK_TYPES_SUPPORTED cpu_to_le32(0x0d010203)
122 #define OID_802_11_NETWORK_TYPE_IN_USE cpu_to_le32(0x0d010204)
123 #define OID_802_11_TX_POWER_LEVEL cpu_to_le32(0x0d010205)
124 #define OID_802_11_RSSI cpu_to_le32(0x0d010206)
125 #define OID_802_11_RSSI_TRIGGER cpu_to_le32(0x0d010207)
126 #define OID_802_11_FRAGMENTATION_THRESHOLD cpu_to_le32(0x0d010209)
127 #define OID_802_11_RTS_THRESHOLD cpu_to_le32(0x0d01020a)
128 #define OID_802_11_SUPPORTED_RATES cpu_to_le32(0x0d01020e)
129 #define OID_802_11_CONFIGURATION cpu_to_le32(0x0d010211)
130 #define OID_802_11_POWER_MODE cpu_to_le32(0x0d010216)
131 #define OID_802_11_BSSID_LIST cpu_to_le32(0x0d010217)
132
133
134 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
135 #define WL_NOISE -96 /* typical noise level in dBm */
136 #define WL_SIGMAX -32 /* typical maximum signal level in dBm */
137
138
139 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
140 * based on wireless rndis) has default txpower of 13dBm.
141 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
142 * 100% : 20 mW ~ 13dBm
143 * 75% : 15 mW ~ 12dBm
144 * 50% : 10 mW ~ 10dBm
145 * 25% : 5 mW ~ 7dBm
146 */
147 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
148 #define BCM4320_DEFAULT_TXPOWER_DBM_75 12
149 #define BCM4320_DEFAULT_TXPOWER_DBM_50 10
150 #define BCM4320_DEFAULT_TXPOWER_DBM_25 7
151
152
153 /* codes for "status" field of completion messages */
154 #define RNDIS_STATUS_ADAPTER_NOT_READY cpu_to_le32(0xc0010011)
155 #define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012)
156
157
158 /* Known device types */
159 #define RNDIS_UNKNOWN 0
160 #define RNDIS_BCM4320A 1
161 #define RNDIS_BCM4320B 2
162
163
164 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
165 * slightly modified for datatype endianess, etc
166 */
167 #define NDIS_802_11_LENGTH_SSID 32
168 #define NDIS_802_11_LENGTH_RATES 8
169 #define NDIS_802_11_LENGTH_RATES_EX 16
170
171 enum ndis_80211_net_type {
172 NDIS_80211_TYPE_FREQ_HOP,
173 NDIS_80211_TYPE_DIRECT_SEQ,
174 NDIS_80211_TYPE_OFDM_A,
175 NDIS_80211_TYPE_OFDM_G
176 };
177
178 enum ndis_80211_net_infra {
179 NDIS_80211_INFRA_ADHOC,
180 NDIS_80211_INFRA_INFRA,
181 NDIS_80211_INFRA_AUTO_UNKNOWN
182 };
183
184 enum ndis_80211_auth_mode {
185 NDIS_80211_AUTH_OPEN,
186 NDIS_80211_AUTH_SHARED,
187 NDIS_80211_AUTH_AUTO_SWITCH,
188 NDIS_80211_AUTH_WPA,
189 NDIS_80211_AUTH_WPA_PSK,
190 NDIS_80211_AUTH_WPA_NONE,
191 NDIS_80211_AUTH_WPA2,
192 NDIS_80211_AUTH_WPA2_PSK
193 };
194
195 enum ndis_80211_encr_status {
196 NDIS_80211_ENCR_WEP_ENABLED,
197 NDIS_80211_ENCR_DISABLED,
198 NDIS_80211_ENCR_WEP_KEY_ABSENT,
199 NDIS_80211_ENCR_NOT_SUPPORTED,
200 NDIS_80211_ENCR_TKIP_ENABLED,
201 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
202 NDIS_80211_ENCR_CCMP_ENABLED,
203 NDIS_80211_ENCR_CCMP_KEY_ABSENT
204 };
205
206 enum ndis_80211_priv_filter {
207 NDIS_80211_PRIV_ACCEPT_ALL,
208 NDIS_80211_PRIV_8021X_WEP
209 };
210
211 enum ndis_80211_status_type {
212 NDIS_80211_STATUSTYPE_AUTHENTICATION,
213 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
214 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
215 NDIS_80211_STATUSTYPE_RADIOSTATE,
216 };
217
218 enum ndis_80211_media_stream_mode {
219 NDIS_80211_MEDIA_STREAM_OFF,
220 NDIS_80211_MEDIA_STREAM_ON
221 };
222
223 enum ndis_80211_radio_status {
224 NDIS_80211_RADIO_STATUS_ON,
225 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
226 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
227 };
228
229 enum ndis_80211_addkey_bits {
230 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
231 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
232 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
233 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
234 };
235
236 enum ndis_80211_addwep_bits {
237 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
238 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
239 };
240
241 enum ndis_80211_power_mode {
242 NDIS_80211_POWER_MODE_CAM,
243 NDIS_80211_POWER_MODE_MAX_PSP,
244 NDIS_80211_POWER_MODE_FAST_PSP,
245 };
246
247 enum ndis_80211_pmkid_cand_list_flag_bits {
248 NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
249 };
250
251 struct ndis_80211_auth_request {
252 __le32 length;
253 u8 bssid[6];
254 u8 padding[2];
255 __le32 flags;
256 } __packed;
257
258 struct ndis_80211_pmkid_candidate {
259 u8 bssid[6];
260 u8 padding[2];
261 __le32 flags;
262 } __packed;
263
264 struct ndis_80211_pmkid_cand_list {
265 __le32 version;
266 __le32 num_candidates;
267 struct ndis_80211_pmkid_candidate candidate_list[0];
268 } __packed;
269
270 struct ndis_80211_status_indication {
271 __le32 status_type;
272 union {
273 __le32 media_stream_mode;
274 __le32 radio_status;
275 struct ndis_80211_auth_request auth_request[0];
276 struct ndis_80211_pmkid_cand_list cand_list;
277 } u;
278 } __packed;
279
280 struct ndis_80211_ssid {
281 __le32 length;
282 u8 essid[NDIS_802_11_LENGTH_SSID];
283 } __packed;
284
285 struct ndis_80211_conf_freq_hop {
286 __le32 length;
287 __le32 hop_pattern;
288 __le32 hop_set;
289 __le32 dwell_time;
290 } __packed;
291
292 struct ndis_80211_conf {
293 __le32 length;
294 __le32 beacon_period;
295 __le32 atim_window;
296 __le32 ds_config;
297 struct ndis_80211_conf_freq_hop fh_config;
298 } __packed;
299
300 struct ndis_80211_bssid_ex {
301 __le32 length;
302 u8 mac[6];
303 u8 padding[2];
304 struct ndis_80211_ssid ssid;
305 __le32 privacy;
306 __le32 rssi;
307 __le32 net_type;
308 struct ndis_80211_conf config;
309 __le32 net_infra;
310 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
311 __le32 ie_length;
312 u8 ies[0];
313 } __packed;
314
315 struct ndis_80211_bssid_list_ex {
316 __le32 num_items;
317 struct ndis_80211_bssid_ex bssid[0];
318 } __packed;
319
320 struct ndis_80211_fixed_ies {
321 u8 timestamp[8];
322 __le16 beacon_interval;
323 __le16 capabilities;
324 } __packed;
325
326 struct ndis_80211_wep_key {
327 __le32 size;
328 __le32 index;
329 __le32 length;
330 u8 material[32];
331 } __packed;
332
333 struct ndis_80211_key {
334 __le32 size;
335 __le32 index;
336 __le32 length;
337 u8 bssid[6];
338 u8 padding[6];
339 u8 rsc[8];
340 u8 material[32];
341 } __packed;
342
343 struct ndis_80211_remove_key {
344 __le32 size;
345 __le32 index;
346 u8 bssid[6];
347 u8 padding[2];
348 } __packed;
349
350 struct ndis_config_param {
351 __le32 name_offs;
352 __le32 name_length;
353 __le32 type;
354 __le32 value_offs;
355 __le32 value_length;
356 } __packed;
357
358 struct ndis_80211_assoc_info {
359 __le32 length;
360 __le16 req_ies;
361 struct req_ie {
362 __le16 capa;
363 __le16 listen_interval;
364 u8 cur_ap_address[6];
365 } req_ie;
366 __le32 req_ie_length;
367 __le32 offset_req_ies;
368 __le16 resp_ies;
369 struct resp_ie {
370 __le16 capa;
371 __le16 status_code;
372 __le16 assoc_id;
373 } resp_ie;
374 __le32 resp_ie_length;
375 __le32 offset_resp_ies;
376 } __packed;
377
378 struct ndis_80211_auth_encr_pair {
379 __le32 auth_mode;
380 __le32 encr_mode;
381 } __packed;
382
383 struct ndis_80211_capability {
384 __le32 length;
385 __le32 version;
386 __le32 num_pmkids;
387 __le32 num_auth_encr_pair;
388 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
389 } __packed;
390
391 struct ndis_80211_bssid_info {
392 u8 bssid[6];
393 u8 pmkid[16];
394 } __packed;
395
396 struct ndis_80211_pmkid {
397 __le32 length;
398 __le32 bssid_info_count;
399 struct ndis_80211_bssid_info bssid_info[0];
400 } __packed;
401
402 /*
403 * private data
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_NUM_KEYS 4
420 #define RNDIS_WLAN_KEY_MGMT_NONE 0
421 #define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
422 #define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
423
424 #define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
425
426 static const struct ieee80211_channel rndis_channels[] = {
427 { .center_freq = 2412 },
428 { .center_freq = 2417 },
429 { .center_freq = 2422 },
430 { .center_freq = 2427 },
431 { .center_freq = 2432 },
432 { .center_freq = 2437 },
433 { .center_freq = 2442 },
434 { .center_freq = 2447 },
435 { .center_freq = 2452 },
436 { .center_freq = 2457 },
437 { .center_freq = 2462 },
438 { .center_freq = 2467 },
439 { .center_freq = 2472 },
440 { .center_freq = 2484 },
441 };
442
443 static const struct ieee80211_rate rndis_rates[] = {
444 { .bitrate = 10 },
445 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
446 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
447 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
448 { .bitrate = 60 },
449 { .bitrate = 90 },
450 { .bitrate = 120 },
451 { .bitrate = 180 },
452 { .bitrate = 240 },
453 { .bitrate = 360 },
454 { .bitrate = 480 },
455 { .bitrate = 540 }
456 };
457
458 static const u32 rndis_cipher_suites[] = {
459 WLAN_CIPHER_SUITE_WEP40,
460 WLAN_CIPHER_SUITE_WEP104,
461 WLAN_CIPHER_SUITE_TKIP,
462 WLAN_CIPHER_SUITE_CCMP,
463 };
464
465 struct rndis_wlan_encr_key {
466 int len;
467 u32 cipher;
468 u8 material[32];
469 u8 bssid[ETH_ALEN];
470 bool pairwise;
471 bool tx_key;
472 };
473
474 /* RNDIS device private data */
475 struct rndis_wlan_private {
476 struct usbnet *usbdev;
477
478 struct wireless_dev wdev;
479
480 struct cfg80211_scan_request *scan_request;
481
482 struct workqueue_struct *workqueue;
483 struct delayed_work dev_poller_work;
484 struct delayed_work scan_work;
485 struct work_struct work;
486 struct mutex command_lock;
487 unsigned long work_pending;
488 int last_qual;
489 s32 cqm_rssi_thold;
490 u32 cqm_rssi_hyst;
491 int last_cqm_event_rssi;
492
493 struct ieee80211_supported_band band;
494 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
495 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
496 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
497
498 int device_type;
499 int caps;
500 int multicast_size;
501
502 /* module parameters */
503 char param_country[4];
504 int param_frameburst;
505 int param_afterburner;
506 int param_power_save;
507 int param_power_output;
508 int param_roamtrigger;
509 int param_roamdelta;
510 u32 param_workaround_interval;
511
512 /* hardware state */
513 bool radio_on;
514 int power_mode;
515 int infra_mode;
516 bool connected;
517 u8 bssid[ETH_ALEN];
518 __le32 current_command_oid;
519
520 /* encryption stuff */
521 int encr_tx_key_index;
522 struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
523 int wpa_version;
524
525 u8 command_buffer[COMMAND_BUFFER_SIZE];
526 };
527
528 /*
529 * cfg80211 ops
530 */
531 static int rndis_change_virtual_intf(struct wiphy *wiphy,
532 struct net_device *dev,
533 enum nl80211_iftype type, u32 *flags,
534 struct vif_params *params);
535
536 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
537 struct cfg80211_scan_request *request);
538
539 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
540
541 static int rndis_set_tx_power(struct wiphy *wiphy,
542 enum nl80211_tx_power_setting type,
543 int mbm);
544 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
545
546 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
547 struct cfg80211_connect_params *sme);
548
549 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
550 u16 reason_code);
551
552 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
553 struct cfg80211_ibss_params *params);
554
555 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
556
557 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
558 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
559
560 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
561 u8 key_index, bool pairwise, const u8 *mac_addr,
562 struct key_params *params);
563
564 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
565 u8 key_index, bool pairwise, const u8 *mac_addr);
566
567 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
568 u8 key_index, bool unicast, bool multicast);
569
570 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
571 u8 *mac, struct station_info *sinfo);
572
573 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
574 int idx, u8 *mac, struct station_info *sinfo);
575
576 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
577 struct cfg80211_pmksa *pmksa);
578
579 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
580 struct cfg80211_pmksa *pmksa);
581
582 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
583
584 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
585 bool enabled, int timeout);
586
587 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
588 struct net_device *dev,
589 s32 rssi_thold, u32 rssi_hyst);
590
591 static const struct cfg80211_ops rndis_config_ops = {
592 .change_virtual_intf = rndis_change_virtual_intf,
593 .scan = rndis_scan,
594 .set_wiphy_params = rndis_set_wiphy_params,
595 .set_tx_power = rndis_set_tx_power,
596 .get_tx_power = rndis_get_tx_power,
597 .connect = rndis_connect,
598 .disconnect = rndis_disconnect,
599 .join_ibss = rndis_join_ibss,
600 .leave_ibss = rndis_leave_ibss,
601 .set_channel = rndis_set_channel,
602 .add_key = rndis_add_key,
603 .del_key = rndis_del_key,
604 .set_default_key = rndis_set_default_key,
605 .get_station = rndis_get_station,
606 .dump_station = rndis_dump_station,
607 .set_pmksa = rndis_set_pmksa,
608 .del_pmksa = rndis_del_pmksa,
609 .flush_pmksa = rndis_flush_pmksa,
610 .set_power_mgmt = rndis_set_power_mgmt,
611 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
612 };
613
614 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
615
616
get_rndis_wlan_priv(struct usbnet * dev)617 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
618 {
619 return (struct rndis_wlan_private *)dev->driver_priv;
620 }
621
get_bcm4320_power_dbm(struct rndis_wlan_private * priv)622 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
623 {
624 switch (priv->param_power_output) {
625 default:
626 case 3:
627 return BCM4320_DEFAULT_TXPOWER_DBM_100;
628 case 2:
629 return BCM4320_DEFAULT_TXPOWER_DBM_75;
630 case 1:
631 return BCM4320_DEFAULT_TXPOWER_DBM_50;
632 case 0:
633 return BCM4320_DEFAULT_TXPOWER_DBM_25;
634 }
635 }
636
is_wpa_key(struct rndis_wlan_private * priv,int idx)637 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
638 {
639 int cipher = priv->encr_keys[idx].cipher;
640
641 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
642 cipher == WLAN_CIPHER_SUITE_TKIP);
643 }
644
rndis_cipher_to_alg(u32 cipher)645 static int rndis_cipher_to_alg(u32 cipher)
646 {
647 switch (cipher) {
648 default:
649 return RNDIS_WLAN_ALG_NONE;
650 case WLAN_CIPHER_SUITE_WEP40:
651 case WLAN_CIPHER_SUITE_WEP104:
652 return RNDIS_WLAN_ALG_WEP;
653 case WLAN_CIPHER_SUITE_TKIP:
654 return RNDIS_WLAN_ALG_TKIP;
655 case WLAN_CIPHER_SUITE_CCMP:
656 return RNDIS_WLAN_ALG_CCMP;
657 }
658 }
659
rndis_akm_suite_to_key_mgmt(u32 akm_suite)660 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
661 {
662 switch (akm_suite) {
663 default:
664 return RNDIS_WLAN_KEY_MGMT_NONE;
665 case WLAN_AKM_SUITE_8021X:
666 return RNDIS_WLAN_KEY_MGMT_802_1X;
667 case WLAN_AKM_SUITE_PSK:
668 return RNDIS_WLAN_KEY_MGMT_PSK;
669 }
670 }
671
672 #ifdef DEBUG
oid_to_string(__le32 oid)673 static const char *oid_to_string(__le32 oid)
674 {
675 switch (oid) {
676 #define OID_STR(oid) case oid: return(#oid)
677 /* from rndis_host.h */
678 OID_STR(OID_802_3_PERMANENT_ADDRESS);
679 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
680 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
681 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
682
683 /* from rndis_wlan.c */
684 OID_STR(OID_GEN_LINK_SPEED);
685 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
686
687 OID_STR(OID_GEN_XMIT_OK);
688 OID_STR(OID_GEN_RCV_OK);
689 OID_STR(OID_GEN_XMIT_ERROR);
690 OID_STR(OID_GEN_RCV_ERROR);
691 OID_STR(OID_GEN_RCV_NO_BUFFER);
692
693 OID_STR(OID_802_3_CURRENT_ADDRESS);
694 OID_STR(OID_802_3_MULTICAST_LIST);
695 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
696
697 OID_STR(OID_802_11_BSSID);
698 OID_STR(OID_802_11_SSID);
699 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
700 OID_STR(OID_802_11_ADD_WEP);
701 OID_STR(OID_802_11_REMOVE_WEP);
702 OID_STR(OID_802_11_DISASSOCIATE);
703 OID_STR(OID_802_11_AUTHENTICATION_MODE);
704 OID_STR(OID_802_11_PRIVACY_FILTER);
705 OID_STR(OID_802_11_BSSID_LIST_SCAN);
706 OID_STR(OID_802_11_ENCRYPTION_STATUS);
707 OID_STR(OID_802_11_ADD_KEY);
708 OID_STR(OID_802_11_REMOVE_KEY);
709 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
710 OID_STR(OID_802_11_CAPABILITY);
711 OID_STR(OID_802_11_PMKID);
712 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
713 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
714 OID_STR(OID_802_11_TX_POWER_LEVEL);
715 OID_STR(OID_802_11_RSSI);
716 OID_STR(OID_802_11_RSSI_TRIGGER);
717 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
718 OID_STR(OID_802_11_RTS_THRESHOLD);
719 OID_STR(OID_802_11_SUPPORTED_RATES);
720 OID_STR(OID_802_11_CONFIGURATION);
721 OID_STR(OID_802_11_POWER_MODE);
722 OID_STR(OID_802_11_BSSID_LIST);
723 #undef OID_STR
724 }
725
726 return "?";
727 }
728 #else
oid_to_string(__le32 oid)729 static const char *oid_to_string(__le32 oid)
730 {
731 return "?";
732 }
733 #endif
734
735 /* translate error code */
rndis_error_status(__le32 rndis_status)736 static int rndis_error_status(__le32 rndis_status)
737 {
738 int ret = -EINVAL;
739 switch (rndis_status) {
740 case RNDIS_STATUS_SUCCESS:
741 ret = 0;
742 break;
743 case RNDIS_STATUS_FAILURE:
744 case RNDIS_STATUS_INVALID_DATA:
745 ret = -EINVAL;
746 break;
747 case RNDIS_STATUS_NOT_SUPPORTED:
748 ret = -EOPNOTSUPP;
749 break;
750 case RNDIS_STATUS_ADAPTER_NOT_READY:
751 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
752 ret = -EBUSY;
753 break;
754 }
755 return ret;
756 }
757
rndis_query_oid(struct usbnet * dev,__le32 oid,void * data,int * len)758 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
759 {
760 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
761 union {
762 void *buf;
763 struct rndis_msg_hdr *header;
764 struct rndis_query *get;
765 struct rndis_query_c *get_c;
766 } u;
767 int ret, buflen;
768 int resplen, respoffs, copylen;
769
770 buflen = *len + sizeof(*u.get);
771 if (buflen < CONTROL_BUFFER_SIZE)
772 buflen = CONTROL_BUFFER_SIZE;
773
774 if (buflen > COMMAND_BUFFER_SIZE) {
775 u.buf = kmalloc(buflen, GFP_KERNEL);
776 if (!u.buf)
777 return -ENOMEM;
778 } else {
779 u.buf = priv->command_buffer;
780 }
781
782 mutex_lock(&priv->command_lock);
783
784 memset(u.get, 0, sizeof *u.get);
785 u.get->msg_type = RNDIS_MSG_QUERY;
786 u.get->msg_len = cpu_to_le32(sizeof *u.get);
787 u.get->oid = oid;
788
789 priv->current_command_oid = oid;
790 ret = rndis_command(dev, u.header, buflen);
791 priv->current_command_oid = 0;
792 if (ret < 0)
793 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
794 __func__, oid_to_string(oid), ret,
795 le32_to_cpu(u.get_c->status));
796
797 if (ret == 0) {
798 resplen = le32_to_cpu(u.get_c->len);
799 respoffs = le32_to_cpu(u.get_c->offset) + 8;
800
801 if (respoffs > buflen) {
802 /* Device returned data offset outside buffer, error. */
803 netdev_dbg(dev->net, "%s(%s): received invalid "
804 "data offset: %d > %d\n", __func__,
805 oid_to_string(oid), respoffs, buflen);
806
807 ret = -EINVAL;
808 goto exit_unlock;
809 }
810
811 if ((resplen + respoffs) > buflen) {
812 /* Device would have returned more data if buffer would
813 * have been big enough. Copy just the bits that we got.
814 */
815 copylen = buflen - respoffs;
816 } else {
817 copylen = resplen;
818 }
819
820 if (copylen > *len)
821 copylen = *len;
822
823 memcpy(data, u.buf + respoffs, copylen);
824
825 *len = resplen;
826
827 ret = rndis_error_status(u.get_c->status);
828 if (ret < 0)
829 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
830 __func__, oid_to_string(oid),
831 le32_to_cpu(u.get_c->status), ret);
832 }
833
834 exit_unlock:
835 mutex_unlock(&priv->command_lock);
836
837 if (u.buf != priv->command_buffer)
838 kfree(u.buf);
839 return ret;
840 }
841
rndis_set_oid(struct usbnet * dev,__le32 oid,const void * data,int len)842 static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
843 int len)
844 {
845 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
846 union {
847 void *buf;
848 struct rndis_msg_hdr *header;
849 struct rndis_set *set;
850 struct rndis_set_c *set_c;
851 } u;
852 int ret, buflen;
853
854 buflen = len + sizeof(*u.set);
855 if (buflen < CONTROL_BUFFER_SIZE)
856 buflen = CONTROL_BUFFER_SIZE;
857
858 if (buflen > COMMAND_BUFFER_SIZE) {
859 u.buf = kmalloc(buflen, GFP_KERNEL);
860 if (!u.buf)
861 return -ENOMEM;
862 } else {
863 u.buf = priv->command_buffer;
864 }
865
866 mutex_lock(&priv->command_lock);
867
868 memset(u.set, 0, sizeof *u.set);
869 u.set->msg_type = RNDIS_MSG_SET;
870 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
871 u.set->oid = oid;
872 u.set->len = cpu_to_le32(len);
873 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
874 u.set->handle = cpu_to_le32(0);
875 memcpy(u.buf + sizeof(*u.set), data, len);
876
877 priv->current_command_oid = oid;
878 ret = rndis_command(dev, u.header, buflen);
879 priv->current_command_oid = 0;
880 if (ret < 0)
881 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
882 __func__, oid_to_string(oid), ret,
883 le32_to_cpu(u.set_c->status));
884
885 if (ret == 0) {
886 ret = rndis_error_status(u.set_c->status);
887
888 if (ret < 0)
889 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
890 __func__, oid_to_string(oid),
891 le32_to_cpu(u.set_c->status), ret);
892 }
893
894 mutex_unlock(&priv->command_lock);
895
896 if (u.buf != priv->command_buffer)
897 kfree(u.buf);
898 return ret;
899 }
900
rndis_reset(struct usbnet * usbdev)901 static int rndis_reset(struct usbnet *usbdev)
902 {
903 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
904 struct rndis_reset *reset;
905 int ret;
906
907 mutex_lock(&priv->command_lock);
908
909 reset = (void *)priv->command_buffer;
910 memset(reset, 0, sizeof(*reset));
911 reset->msg_type = RNDIS_MSG_RESET;
912 reset->msg_len = cpu_to_le32(sizeof(*reset));
913 priv->current_command_oid = 0;
914 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
915
916 mutex_unlock(&priv->command_lock);
917
918 if (ret < 0)
919 return ret;
920 return 0;
921 }
922
923 /*
924 * Specs say that we can only set config parameters only soon after device
925 * initialization.
926 * value_type: 0 = u32, 2 = unicode string
927 */
rndis_set_config_parameter(struct usbnet * dev,char * param,int value_type,void * value)928 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
929 int value_type, void *value)
930 {
931 struct ndis_config_param *infobuf;
932 int value_len, info_len, param_len, ret, i;
933 __le16 *unibuf;
934 __le32 *dst_value;
935
936 if (value_type == 0)
937 value_len = sizeof(__le32);
938 else if (value_type == 2)
939 value_len = strlen(value) * sizeof(__le16);
940 else
941 return -EINVAL;
942
943 param_len = strlen(param) * sizeof(__le16);
944 info_len = sizeof(*infobuf) + param_len + value_len;
945
946 #ifdef DEBUG
947 info_len += 12;
948 #endif
949 infobuf = kmalloc(info_len, GFP_KERNEL);
950 if (!infobuf)
951 return -ENOMEM;
952
953 #ifdef DEBUG
954 info_len -= 12;
955 /* extra 12 bytes are for padding (debug output) */
956 memset(infobuf, 0xCC, info_len + 12);
957 #endif
958
959 if (value_type == 2)
960 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
961 param, (u8 *)value);
962 else
963 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
964 param, *(u32 *)value);
965
966 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
967 infobuf->name_length = cpu_to_le32(param_len);
968 infobuf->type = cpu_to_le32(value_type);
969 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
970 infobuf->value_length = cpu_to_le32(value_len);
971
972 /* simple string to unicode string conversion */
973 unibuf = (void *)infobuf + sizeof(*infobuf);
974 for (i = 0; i < param_len / sizeof(__le16); i++)
975 unibuf[i] = cpu_to_le16(param[i]);
976
977 if (value_type == 2) {
978 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
979 for (i = 0; i < value_len / sizeof(__le16); i++)
980 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
981 } else {
982 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
983 *dst_value = cpu_to_le32(*(u32 *)value);
984 }
985
986 #ifdef DEBUG
987 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
988 for (i = 0; i < info_len; i += 12) {
989 u32 *tmp = (u32 *)((u8 *)infobuf + i);
990 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
991 cpu_to_be32(tmp[0]),
992 cpu_to_be32(tmp[1]),
993 cpu_to_be32(tmp[2]));
994 }
995 #endif
996
997 ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
998 infobuf, info_len);
999 if (ret != 0)
1000 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
1001 ret);
1002
1003 kfree(infobuf);
1004 return ret;
1005 }
1006
rndis_set_config_parameter_str(struct usbnet * dev,char * param,char * value)1007 static int rndis_set_config_parameter_str(struct usbnet *dev,
1008 char *param, char *value)
1009 {
1010 return rndis_set_config_parameter(dev, param, 2, value);
1011 }
1012
1013 /*
1014 * data conversion functions
1015 */
level_to_qual(int level)1016 static int level_to_qual(int level)
1017 {
1018 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
1019 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
1020 }
1021
1022 /*
1023 * common functions
1024 */
1025 static int set_infra_mode(struct usbnet *usbdev, int mode);
1026 static void restore_keys(struct usbnet *usbdev);
1027 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1028 bool *matched);
1029
rndis_start_bssid_list_scan(struct usbnet * usbdev)1030 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1031 {
1032 __le32 tmp;
1033
1034 /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1035 tmp = cpu_to_le32(1);
1036 return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1037 sizeof(tmp));
1038 }
1039
set_essid(struct usbnet * usbdev,struct ndis_80211_ssid * ssid)1040 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1041 {
1042 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1043 int ret;
1044
1045 ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1046 if (ret < 0) {
1047 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1048 return ret;
1049 }
1050 if (ret == 0) {
1051 priv->radio_on = true;
1052 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1053 }
1054
1055 return ret;
1056 }
1057
set_bssid(struct usbnet * usbdev,const u8 * bssid)1058 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1059 {
1060 int ret;
1061
1062 ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1063 if (ret < 0) {
1064 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1065 bssid, ret);
1066 return ret;
1067 }
1068
1069 return ret;
1070 }
1071
clear_bssid(struct usbnet * usbdev)1072 static int clear_bssid(struct usbnet *usbdev)
1073 {
1074 static const u8 broadcast_mac[ETH_ALEN] = {
1075 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1076 };
1077
1078 return set_bssid(usbdev, broadcast_mac);
1079 }
1080
get_bssid(struct usbnet * usbdev,u8 bssid[ETH_ALEN])1081 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1082 {
1083 int ret, len;
1084
1085 len = ETH_ALEN;
1086 ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1087
1088 if (ret != 0)
1089 memset(bssid, 0, ETH_ALEN);
1090
1091 return ret;
1092 }
1093
get_association_info(struct usbnet * usbdev,struct ndis_80211_assoc_info * info,int len)1094 static int get_association_info(struct usbnet *usbdev,
1095 struct ndis_80211_assoc_info *info, int len)
1096 {
1097 return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1098 info, &len);
1099 }
1100
is_associated(struct usbnet * usbdev)1101 static bool is_associated(struct usbnet *usbdev)
1102 {
1103 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1104 u8 bssid[ETH_ALEN];
1105 int ret;
1106
1107 if (!priv->radio_on)
1108 return false;
1109
1110 ret = get_bssid(usbdev, bssid);
1111
1112 return (ret == 0 && !is_zero_ether_addr(bssid));
1113 }
1114
disassociate(struct usbnet * usbdev,bool reset_ssid)1115 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1116 {
1117 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1118 struct ndis_80211_ssid ssid;
1119 int i, ret = 0;
1120
1121 if (priv->radio_on) {
1122 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1123 if (ret == 0) {
1124 priv->radio_on = false;
1125 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1126 __func__);
1127
1128 if (reset_ssid)
1129 msleep(100);
1130 }
1131 }
1132
1133 /* disassociate causes radio to be turned off; if reset_ssid
1134 * is given, set random ssid to enable radio */
1135 if (reset_ssid) {
1136 /* Set device to infrastructure mode so we don't get ad-hoc
1137 * 'media connect' indications with the random ssid.
1138 */
1139 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1140
1141 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1142 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1143 ssid.essid[0] = 0x1;
1144 ssid.essid[1] = 0xff;
1145 for (i = 2; i < sizeof(ssid.essid); i++)
1146 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1147 ret = set_essid(usbdev, &ssid);
1148 }
1149 return ret;
1150 }
1151
set_auth_mode(struct usbnet * usbdev,u32 wpa_version,enum nl80211_auth_type auth_type,int keymgmt)1152 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1153 enum nl80211_auth_type auth_type, int keymgmt)
1154 {
1155 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1156 __le32 tmp;
1157 int auth_mode, ret;
1158
1159 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1160 __func__, wpa_version, auth_type, keymgmt);
1161
1162 if (wpa_version & NL80211_WPA_VERSION_2) {
1163 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1164 auth_mode = NDIS_80211_AUTH_WPA2;
1165 else
1166 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1167 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1168 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1169 auth_mode = NDIS_80211_AUTH_WPA;
1170 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1171 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1172 else
1173 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1174 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1175 auth_mode = NDIS_80211_AUTH_SHARED;
1176 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1177 auth_mode = NDIS_80211_AUTH_OPEN;
1178 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1179 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1180 else
1181 return -ENOTSUPP;
1182
1183 tmp = cpu_to_le32(auth_mode);
1184 ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1185 sizeof(tmp));
1186 if (ret != 0) {
1187 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1188 ret);
1189 return ret;
1190 }
1191
1192 priv->wpa_version = wpa_version;
1193
1194 return 0;
1195 }
1196
set_priv_filter(struct usbnet * usbdev)1197 static int set_priv_filter(struct usbnet *usbdev)
1198 {
1199 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1200 __le32 tmp;
1201
1202 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1203 __func__, priv->wpa_version);
1204
1205 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1206 priv->wpa_version & NL80211_WPA_VERSION_1)
1207 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1208 else
1209 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1210
1211 return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1212 sizeof(tmp));
1213 }
1214
set_encr_mode(struct usbnet * usbdev,int pairwise,int groupwise)1215 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1216 {
1217 __le32 tmp;
1218 int encr_mode, ret;
1219
1220 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1221 __func__, pairwise, groupwise);
1222
1223 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1224 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1225 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1226 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1227 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1228 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1229 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1230 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1231 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1232 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1233 else
1234 encr_mode = NDIS_80211_ENCR_DISABLED;
1235
1236 tmp = cpu_to_le32(encr_mode);
1237 ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1238 sizeof(tmp));
1239 if (ret != 0) {
1240 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1241 ret);
1242 return ret;
1243 }
1244
1245 return 0;
1246 }
1247
set_infra_mode(struct usbnet * usbdev,int mode)1248 static int set_infra_mode(struct usbnet *usbdev, int mode)
1249 {
1250 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1251 __le32 tmp;
1252 int ret;
1253
1254 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1255 __func__, priv->infra_mode);
1256
1257 tmp = cpu_to_le32(mode);
1258 ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1259 sizeof(tmp));
1260 if (ret != 0) {
1261 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1262 ret);
1263 return ret;
1264 }
1265
1266 /* NDIS drivers clear keys when infrastructure mode is
1267 * changed. But Linux tools assume otherwise. So set the
1268 * keys */
1269 restore_keys(usbdev);
1270
1271 priv->infra_mode = mode;
1272 return 0;
1273 }
1274
set_rts_threshold(struct usbnet * usbdev,u32 rts_threshold)1275 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1276 {
1277 __le32 tmp;
1278
1279 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1280
1281 if (rts_threshold < 0 || rts_threshold > 2347)
1282 rts_threshold = 2347;
1283
1284 tmp = cpu_to_le32(rts_threshold);
1285 return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1286 sizeof(tmp));
1287 }
1288
set_frag_threshold(struct usbnet * usbdev,u32 frag_threshold)1289 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1290 {
1291 __le32 tmp;
1292
1293 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1294
1295 if (frag_threshold < 256 || frag_threshold > 2346)
1296 frag_threshold = 2346;
1297
1298 tmp = cpu_to_le32(frag_threshold);
1299 return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1300 sizeof(tmp));
1301 }
1302
set_default_iw_params(struct usbnet * usbdev)1303 static void set_default_iw_params(struct usbnet *usbdev)
1304 {
1305 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1306 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1307 RNDIS_WLAN_KEY_MGMT_NONE);
1308 set_priv_filter(usbdev);
1309 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1310 }
1311
deauthenticate(struct usbnet * usbdev)1312 static int deauthenticate(struct usbnet *usbdev)
1313 {
1314 int ret;
1315
1316 ret = disassociate(usbdev, true);
1317 set_default_iw_params(usbdev);
1318 return ret;
1319 }
1320
set_channel(struct usbnet * usbdev,int channel)1321 static int set_channel(struct usbnet *usbdev, int channel)
1322 {
1323 struct ndis_80211_conf config;
1324 unsigned int dsconfig;
1325 int len, ret;
1326
1327 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1328
1329 /* this OID is valid only when not associated */
1330 if (is_associated(usbdev))
1331 return 0;
1332
1333 dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1334
1335 len = sizeof(config);
1336 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1337 if (ret < 0) {
1338 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1339 __func__);
1340 return ret;
1341 }
1342
1343 config.ds_config = cpu_to_le32(dsconfig);
1344 ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1345 sizeof(config));
1346
1347 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1348
1349 return ret;
1350 }
1351
get_current_channel(struct usbnet * usbdev,u16 * beacon_interval)1352 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1353 u16 *beacon_interval)
1354 {
1355 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1356 struct ieee80211_channel *channel;
1357 struct ndis_80211_conf config;
1358 int len, ret;
1359
1360 /* Get channel and beacon interval */
1361 len = sizeof(config);
1362 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1363 netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
1364 __func__, ret);
1365 if (ret < 0)
1366 return NULL;
1367
1368 channel = ieee80211_get_channel(priv->wdev.wiphy,
1369 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1370 if (!channel)
1371 return NULL;
1372
1373 if (beacon_interval)
1374 *beacon_interval = le16_to_cpu(config.beacon_period);
1375 return channel;
1376 }
1377
1378 /* index must be 0 - N, as per NDIS */
add_wep_key(struct usbnet * usbdev,const u8 * key,int key_len,int index)1379 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1380 int index)
1381 {
1382 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1383 struct ndis_80211_wep_key ndis_key;
1384 u32 cipher;
1385 int ret;
1386
1387 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1388 __func__, index, key_len);
1389
1390 if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1391 return -EINVAL;
1392
1393 if (key_len == 5)
1394 cipher = WLAN_CIPHER_SUITE_WEP40;
1395 else
1396 cipher = WLAN_CIPHER_SUITE_WEP104;
1397
1398 memset(&ndis_key, 0, sizeof(ndis_key));
1399
1400 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1401 ndis_key.length = cpu_to_le32(key_len);
1402 ndis_key.index = cpu_to_le32(index);
1403 memcpy(&ndis_key.material, key, key_len);
1404
1405 if (index == priv->encr_tx_key_index) {
1406 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1407 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1408 RNDIS_WLAN_ALG_NONE);
1409 if (ret)
1410 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1411 ret);
1412 }
1413
1414 ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1415 sizeof(ndis_key));
1416 if (ret != 0) {
1417 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1418 index + 1, ret);
1419 return ret;
1420 }
1421
1422 priv->encr_keys[index].len = key_len;
1423 priv->encr_keys[index].cipher = cipher;
1424 memcpy(&priv->encr_keys[index].material, key, key_len);
1425 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1426
1427 return 0;
1428 }
1429
add_wpa_key(struct usbnet * usbdev,const u8 * key,int key_len,int index,const u8 * addr,const u8 * rx_seq,int seq_len,u32 cipher,__le32 flags)1430 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1431 int index, const u8 *addr, const u8 *rx_seq,
1432 int seq_len, u32 cipher, __le32 flags)
1433 {
1434 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1435 struct ndis_80211_key ndis_key;
1436 bool is_addr_ok;
1437 int ret;
1438
1439 if (index < 0 || index >= 4) {
1440 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1441 __func__, index);
1442 return -EINVAL;
1443 }
1444 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1445 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1446 __func__, key_len);
1447 return -EINVAL;
1448 }
1449 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1450 if (!rx_seq || seq_len <= 0) {
1451 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1452 __func__);
1453 return -EINVAL;
1454 }
1455 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1456 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1457 return -EINVAL;
1458 }
1459 }
1460
1461 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1462 !is_broadcast_ether_addr(addr);
1463 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1464 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1465 __func__, addr);
1466 return -EINVAL;
1467 }
1468
1469 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1470 __func__, index,
1471 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1472 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1473 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1474
1475 memset(&ndis_key, 0, sizeof(ndis_key));
1476
1477 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1478 sizeof(ndis_key.material) + key_len);
1479 ndis_key.length = cpu_to_le32(key_len);
1480 ndis_key.index = cpu_to_le32(index) | flags;
1481
1482 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1483 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1484 * different order than NDIS spec, so swap the order here. */
1485 memcpy(ndis_key.material, key, 16);
1486 memcpy(ndis_key.material + 16, key + 24, 8);
1487 memcpy(ndis_key.material + 24, key + 16, 8);
1488 } else
1489 memcpy(ndis_key.material, key, key_len);
1490
1491 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1492 memcpy(ndis_key.rsc, rx_seq, seq_len);
1493
1494 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1495 /* pairwise key */
1496 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1497 } else {
1498 /* group key */
1499 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1500 memset(ndis_key.bssid, 0xff, ETH_ALEN);
1501 else
1502 get_bssid(usbdev, ndis_key.bssid);
1503 }
1504
1505 ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1506 le32_to_cpu(ndis_key.size));
1507 netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1508 __func__, ret);
1509 if (ret != 0)
1510 return ret;
1511
1512 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1513 priv->encr_keys[index].len = key_len;
1514 priv->encr_keys[index].cipher = cipher;
1515 memcpy(&priv->encr_keys[index].material, key, key_len);
1516 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1517 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1518 else
1519 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1520
1521 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1522 priv->encr_tx_key_index = index;
1523
1524 return 0;
1525 }
1526
restore_key(struct usbnet * usbdev,int key_idx)1527 static int restore_key(struct usbnet *usbdev, int key_idx)
1528 {
1529 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1530 struct rndis_wlan_encr_key key;
1531
1532 if (is_wpa_key(priv, key_idx))
1533 return 0;
1534
1535 key = priv->encr_keys[key_idx];
1536
1537 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1538
1539 if (key.len == 0)
1540 return 0;
1541
1542 return add_wep_key(usbdev, key.material, key.len, key_idx);
1543 }
1544
restore_keys(struct usbnet * usbdev)1545 static void restore_keys(struct usbnet *usbdev)
1546 {
1547 int i;
1548
1549 for (i = 0; i < 4; i++)
1550 restore_key(usbdev, i);
1551 }
1552
clear_key(struct rndis_wlan_private * priv,int idx)1553 static void clear_key(struct rndis_wlan_private *priv, int idx)
1554 {
1555 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1556 }
1557
1558 /* remove_key is for both wep and wpa */
remove_key(struct usbnet * usbdev,int index,const u8 * bssid)1559 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1560 {
1561 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1562 struct ndis_80211_remove_key remove_key;
1563 __le32 keyindex;
1564 bool is_wpa;
1565 int ret;
1566
1567 if (index >= RNDIS_WLAN_NUM_KEYS)
1568 return -ENOENT;
1569
1570 if (priv->encr_keys[index].len == 0)
1571 return 0;
1572
1573 is_wpa = is_wpa_key(priv, index);
1574
1575 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1576 __func__, index, is_wpa ? "wpa" : "wep",
1577 priv->encr_keys[index].len);
1578
1579 clear_key(priv, index);
1580
1581 if (is_wpa) {
1582 remove_key.size = cpu_to_le32(sizeof(remove_key));
1583 remove_key.index = cpu_to_le32(index);
1584 if (bssid) {
1585 /* pairwise key */
1586 if (!is_broadcast_ether_addr(bssid))
1587 remove_key.index |=
1588 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1589 memcpy(remove_key.bssid, bssid,
1590 sizeof(remove_key.bssid));
1591 } else
1592 memset(remove_key.bssid, 0xff,
1593 sizeof(remove_key.bssid));
1594
1595 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1596 sizeof(remove_key));
1597 if (ret != 0)
1598 return ret;
1599 } else {
1600 keyindex = cpu_to_le32(index);
1601 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1602 sizeof(keyindex));
1603 if (ret != 0) {
1604 netdev_warn(usbdev->net,
1605 "removing encryption key %d failed (%08X)\n",
1606 index, ret);
1607 return ret;
1608 }
1609 }
1610
1611 /* if it is transmit key, disable encryption */
1612 if (index == priv->encr_tx_key_index)
1613 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1614
1615 return 0;
1616 }
1617
set_multicast_list(struct usbnet * usbdev)1618 static void set_multicast_list(struct usbnet *usbdev)
1619 {
1620 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1621 struct netdev_hw_addr *ha;
1622 __le32 filter, basefilter;
1623 int ret;
1624 char *mc_addrs = NULL;
1625 int mc_count;
1626
1627 basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1628 RNDIS_PACKET_TYPE_BROADCAST;
1629
1630 if (usbdev->net->flags & IFF_PROMISC) {
1631 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1632 RNDIS_PACKET_TYPE_ALL_LOCAL;
1633 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1634 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1635 }
1636
1637 if (filter != basefilter)
1638 goto set_filter;
1639
1640 /*
1641 * mc_list should be accessed holding the lock, so copy addresses to
1642 * local buffer first.
1643 */
1644 netif_addr_lock_bh(usbdev->net);
1645 mc_count = netdev_mc_count(usbdev->net);
1646 if (mc_count > priv->multicast_size) {
1647 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1648 } else if (mc_count) {
1649 int i = 0;
1650
1651 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1652 if (!mc_addrs) {
1653 netdev_warn(usbdev->net,
1654 "couldn't alloc %d bytes of memory\n",
1655 mc_count * ETH_ALEN);
1656 netif_addr_unlock_bh(usbdev->net);
1657 return;
1658 }
1659
1660 netdev_for_each_mc_addr(ha, usbdev->net)
1661 memcpy(mc_addrs + i++ * ETH_ALEN,
1662 ha->addr, ETH_ALEN);
1663 }
1664 netif_addr_unlock_bh(usbdev->net);
1665
1666 if (filter != basefilter)
1667 goto set_filter;
1668
1669 if (mc_count) {
1670 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1671 mc_count * ETH_ALEN);
1672 kfree(mc_addrs);
1673 if (ret == 0)
1674 filter |= RNDIS_PACKET_TYPE_MULTICAST;
1675 else
1676 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1677
1678 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1679 mc_count, priv->multicast_size, ret);
1680 }
1681
1682 set_filter:
1683 ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1684 sizeof(filter));
1685 if (ret < 0) {
1686 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1687 le32_to_cpu(filter));
1688 }
1689
1690 netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1691 le32_to_cpu(filter), ret);
1692 }
1693
1694 #ifdef DEBUG
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1695 static void debug_print_pmkids(struct usbnet *usbdev,
1696 struct ndis_80211_pmkid *pmkids,
1697 const char *func_str)
1698 {
1699 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1700 int i, len, count, max_pmkids, entry_len;
1701
1702 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1703 len = le32_to_cpu(pmkids->length);
1704 count = le32_to_cpu(pmkids->bssid_info_count);
1705
1706 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1707
1708 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1709 "%d)\n", func_str, count, len, entry_len);
1710
1711 if (count > max_pmkids)
1712 count = max_pmkids;
1713
1714 for (i = 0; i < count; i++) {
1715 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1716
1717 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1718 "pmkid: %08X:%08X:%08X:%08X\n",
1719 func_str, pmkids->bssid_info[i].bssid,
1720 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1721 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1722 }
1723 }
1724 #else
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1725 static void debug_print_pmkids(struct usbnet *usbdev,
1726 struct ndis_80211_pmkid *pmkids,
1727 const char *func_str)
1728 {
1729 return;
1730 }
1731 #endif
1732
get_device_pmkids(struct usbnet * usbdev)1733 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1734 {
1735 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1736 struct ndis_80211_pmkid *pmkids;
1737 int len, ret, max_pmkids;
1738
1739 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1740 len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1741
1742 pmkids = kzalloc(len, GFP_KERNEL);
1743 if (!pmkids)
1744 return ERR_PTR(-ENOMEM);
1745
1746 pmkids->length = cpu_to_le32(len);
1747 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1748
1749 ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1750 if (ret < 0) {
1751 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1752 " -> %d\n", __func__, len, max_pmkids, ret);
1753
1754 kfree(pmkids);
1755 return ERR_PTR(ret);
1756 }
1757
1758 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1759 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1760
1761 debug_print_pmkids(usbdev, pmkids, __func__);
1762
1763 return pmkids;
1764 }
1765
set_device_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids)1766 static int set_device_pmkids(struct usbnet *usbdev,
1767 struct ndis_80211_pmkid *pmkids)
1768 {
1769 int ret, len, num_pmkids;
1770
1771 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1772 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1773 pmkids->length = cpu_to_le32(len);
1774
1775 debug_print_pmkids(usbdev, pmkids, __func__);
1776
1777 ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1778 le32_to_cpu(pmkids->length));
1779 if (ret < 0) {
1780 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1781 "\n", __func__, len, num_pmkids, ret);
1782 }
1783
1784 kfree(pmkids);
1785 return ret;
1786 }
1787
remove_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1788 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1789 struct ndis_80211_pmkid *pmkids,
1790 struct cfg80211_pmksa *pmksa,
1791 int max_pmkids)
1792 {
1793 int i, len, count, newlen, err;
1794
1795 len = le32_to_cpu(pmkids->length);
1796 count = le32_to_cpu(pmkids->bssid_info_count);
1797
1798 if (count > max_pmkids)
1799 count = max_pmkids;
1800
1801 for (i = 0; i < count; i++)
1802 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1803 pmksa->bssid))
1804 break;
1805
1806 /* pmkid not found */
1807 if (i == count) {
1808 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1809 __func__, pmksa->bssid);
1810 err = -ENOENT;
1811 goto error;
1812 }
1813
1814 for (; i + 1 < count; i++)
1815 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1816
1817 count--;
1818 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1819
1820 pmkids->length = cpu_to_le32(newlen);
1821 pmkids->bssid_info_count = cpu_to_le32(count);
1822
1823 return pmkids;
1824 error:
1825 kfree(pmkids);
1826 return ERR_PTR(err);
1827 }
1828
update_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1829 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1830 struct ndis_80211_pmkid *pmkids,
1831 struct cfg80211_pmksa *pmksa,
1832 int max_pmkids)
1833 {
1834 int i, err, len, count, newlen;
1835
1836 len = le32_to_cpu(pmkids->length);
1837 count = le32_to_cpu(pmkids->bssid_info_count);
1838
1839 if (count > max_pmkids)
1840 count = max_pmkids;
1841
1842 /* update with new pmkid */
1843 for (i = 0; i < count; i++) {
1844 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1845 pmksa->bssid))
1846 continue;
1847
1848 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1849 WLAN_PMKID_LEN);
1850
1851 return pmkids;
1852 }
1853
1854 /* out of space, return error */
1855 if (i == max_pmkids) {
1856 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1857 err = -ENOSPC;
1858 goto error;
1859 }
1860
1861 /* add new pmkid */
1862 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1863
1864 pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1865 if (!pmkids) {
1866 err = -ENOMEM;
1867 goto error;
1868 }
1869
1870 pmkids->length = cpu_to_le32(newlen);
1871 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1872
1873 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1874 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1875
1876 return pmkids;
1877 error:
1878 kfree(pmkids);
1879 return ERR_PTR(err);
1880 }
1881
1882 /*
1883 * cfg80211 ops
1884 */
rndis_change_virtual_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,u32 * flags,struct vif_params * params)1885 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1886 struct net_device *dev,
1887 enum nl80211_iftype type, u32 *flags,
1888 struct vif_params *params)
1889 {
1890 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1891 struct usbnet *usbdev = priv->usbdev;
1892 int mode;
1893
1894 switch (type) {
1895 case NL80211_IFTYPE_ADHOC:
1896 mode = NDIS_80211_INFRA_ADHOC;
1897 break;
1898 case NL80211_IFTYPE_STATION:
1899 mode = NDIS_80211_INFRA_INFRA;
1900 break;
1901 default:
1902 return -EINVAL;
1903 }
1904
1905 priv->wdev.iftype = type;
1906
1907 return set_infra_mode(usbdev, mode);
1908 }
1909
rndis_set_wiphy_params(struct wiphy * wiphy,u32 changed)1910 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1911 {
1912 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1913 struct usbnet *usbdev = priv->usbdev;
1914 int err;
1915
1916 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1917 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1918 if (err < 0)
1919 return err;
1920 }
1921
1922 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1923 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1924 if (err < 0)
1925 return err;
1926 }
1927
1928 return 0;
1929 }
1930
rndis_set_tx_power(struct wiphy * wiphy,enum nl80211_tx_power_setting type,int mbm)1931 static int rndis_set_tx_power(struct wiphy *wiphy,
1932 enum nl80211_tx_power_setting type,
1933 int mbm)
1934 {
1935 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1936 struct usbnet *usbdev = priv->usbdev;
1937
1938 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1939 __func__, type, mbm);
1940
1941 if (mbm < 0 || (mbm % 100))
1942 return -ENOTSUPP;
1943
1944 /* Device doesn't support changing txpower after initialization, only
1945 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1946 * currently used.
1947 */
1948 if (type == NL80211_TX_POWER_AUTOMATIC ||
1949 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1950 if (!priv->radio_on)
1951 disassociate(usbdev, true); /* turn on radio */
1952
1953 return 0;
1954 }
1955
1956 return -ENOTSUPP;
1957 }
1958
rndis_get_tx_power(struct wiphy * wiphy,int * dbm)1959 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1960 {
1961 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1962 struct usbnet *usbdev = priv->usbdev;
1963
1964 *dbm = get_bcm4320_power_dbm(priv);
1965
1966 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1967
1968 return 0;
1969 }
1970
1971 #define SCAN_DELAY_JIFFIES (6 * HZ)
rndis_scan(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_scan_request * request)1972 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1973 struct cfg80211_scan_request *request)
1974 {
1975 struct usbnet *usbdev = netdev_priv(dev);
1976 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1977 int ret;
1978 int delay = SCAN_DELAY_JIFFIES;
1979
1980 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1981
1982 /* Get current bssid list from device before new scan, as new scan
1983 * clears internal bssid list.
1984 */
1985 rndis_check_bssid_list(usbdev, NULL, NULL);
1986
1987 if (!request)
1988 return -EINVAL;
1989
1990 if (priv->scan_request && priv->scan_request != request)
1991 return -EBUSY;
1992
1993 priv->scan_request = request;
1994
1995 ret = rndis_start_bssid_list_scan(usbdev);
1996 if (ret == 0) {
1997 if (priv->device_type == RNDIS_BCM4320A)
1998 delay = HZ;
1999
2000 /* Wait before retrieving scan results from device */
2001 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
2002 }
2003
2004 return ret;
2005 }
2006
rndis_bss_info_update(struct usbnet * usbdev,struct ndis_80211_bssid_ex * bssid)2007 static bool rndis_bss_info_update(struct usbnet *usbdev,
2008 struct ndis_80211_bssid_ex *bssid)
2009 {
2010 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2011 struct ieee80211_channel *channel;
2012 struct cfg80211_bss *bss;
2013 s32 signal;
2014 u64 timestamp;
2015 u16 capability;
2016 u16 beacon_interval;
2017 struct ndis_80211_fixed_ies *fixed;
2018 int ie_len, bssid_len;
2019 u8 *ie;
2020
2021 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
2022 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
2023
2024 /* parse bssid structure */
2025 bssid_len = le32_to_cpu(bssid->length);
2026
2027 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2028 sizeof(struct ndis_80211_fixed_ies))
2029 return NULL;
2030
2031 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2032
2033 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2034 ie_len = min(bssid_len - (int)sizeof(*bssid),
2035 (int)le32_to_cpu(bssid->ie_length));
2036 ie_len -= sizeof(struct ndis_80211_fixed_ies);
2037 if (ie_len < 0)
2038 return NULL;
2039
2040 /* extract data for cfg80211_inform_bss */
2041 channel = ieee80211_get_channel(priv->wdev.wiphy,
2042 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2043 if (!channel)
2044 return NULL;
2045
2046 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2047 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2048 capability = le16_to_cpu(fixed->capabilities);
2049 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2050
2051 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2052 timestamp, capability, beacon_interval, ie, ie_len, signal,
2053 GFP_KERNEL);
2054 cfg80211_put_bss(bss);
2055
2056 return (bss != NULL);
2057 }
2058
next_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int * bssid_len,void * buf,int len)2059 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2060 struct ndis_80211_bssid_ex *bssid,
2061 int *bssid_len, void *buf, int len)
2062 {
2063 void *buf_end, *bssid_end;
2064
2065 buf_end = (char *)buf + len;
2066 bssid_end = (char *)bssid + *bssid_len;
2067
2068 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2069 *bssid_len = 0;
2070 return NULL;
2071 } else {
2072 bssid = (void *)((char *)bssid + *bssid_len);
2073 *bssid_len = le32_to_cpu(bssid->length);
2074 return bssid;
2075 }
2076 }
2077
check_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int bssid_len,void * buf,int len)2078 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2079 int bssid_len, void *buf, int len)
2080 {
2081 void *buf_end, *bssid_end;
2082
2083 if (!bssid || bssid_len <= 0 || bssid_len > len)
2084 return false;
2085
2086 buf_end = (char *)buf + len;
2087 bssid_end = (char *)bssid + bssid_len;
2088
2089 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2090 }
2091
rndis_check_bssid_list(struct usbnet * usbdev,u8 * match_bssid,bool * matched)2092 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2093 bool *matched)
2094 {
2095 void *buf = NULL;
2096 struct ndis_80211_bssid_list_ex *bssid_list;
2097 struct ndis_80211_bssid_ex *bssid;
2098 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2099
2100 netdev_dbg(usbdev->net, "%s()\n", __func__);
2101
2102 len = CONTROL_BUFFER_SIZE;
2103 resize_buf:
2104 buf = kzalloc(len, GFP_KERNEL);
2105 if (!buf) {
2106 ret = -ENOMEM;
2107 goto out;
2108 }
2109
2110 /* BSSID-list might have got bigger last time we checked, keep
2111 * resizing until it won't get any bigger.
2112 */
2113 new_len = len;
2114 ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2115 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2116 goto out;
2117
2118 if (new_len > len) {
2119 len = new_len;
2120 kfree(buf);
2121 goto resize_buf;
2122 }
2123
2124 len = new_len;
2125
2126 bssid_list = buf;
2127 count = le32_to_cpu(bssid_list->num_items);
2128 real_count = 0;
2129 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2130
2131 bssid_len = 0;
2132 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2133
2134 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2135 * received 'num_items' and walking through full bssid buffer instead.
2136 */
2137 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2138 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2139 matched) {
2140 if (compare_ether_addr(bssid->mac, match_bssid))
2141 *matched = true;
2142 }
2143
2144 real_count++;
2145 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2146 }
2147
2148 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2149 " %d\n", __func__, count, real_count);
2150
2151 out:
2152 kfree(buf);
2153 return ret;
2154 }
2155
rndis_get_scan_results(struct work_struct * work)2156 static void rndis_get_scan_results(struct work_struct *work)
2157 {
2158 struct rndis_wlan_private *priv =
2159 container_of(work, struct rndis_wlan_private, scan_work.work);
2160 struct usbnet *usbdev = priv->usbdev;
2161 int ret;
2162
2163 netdev_dbg(usbdev->net, "get_scan_results\n");
2164
2165 if (!priv->scan_request)
2166 return;
2167
2168 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2169
2170 cfg80211_scan_done(priv->scan_request, ret < 0);
2171
2172 priv->scan_request = NULL;
2173 }
2174
rndis_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)2175 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2176 struct cfg80211_connect_params *sme)
2177 {
2178 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2179 struct usbnet *usbdev = priv->usbdev;
2180 struct ieee80211_channel *channel = sme->channel;
2181 struct ndis_80211_ssid ssid;
2182 int pairwise = RNDIS_WLAN_ALG_NONE;
2183 int groupwise = RNDIS_WLAN_ALG_NONE;
2184 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2185 int length, i, ret, chan = -1;
2186
2187 if (channel)
2188 chan = ieee80211_frequency_to_channel(channel->center_freq);
2189
2190 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2191 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2192 pairwise |=
2193 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2194
2195 if (sme->crypto.n_ciphers_pairwise > 0 &&
2196 pairwise == RNDIS_WLAN_ALG_NONE) {
2197 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2198 return -ENOTSUPP;
2199 }
2200
2201 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2202 keymgmt |=
2203 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2204
2205 if (sme->crypto.n_akm_suites > 0 &&
2206 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2207 netdev_err(usbdev->net, "Invalid keymgmt\n");
2208 return -ENOTSUPP;
2209 }
2210
2211 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2212 sme->ssid, sme->bssid, chan,
2213 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2214 groupwise, pairwise, keymgmt);
2215
2216 if (is_associated(usbdev))
2217 disassociate(usbdev, false);
2218
2219 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2220 if (ret < 0) {
2221 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2222 ret);
2223 goto err_turn_radio_on;
2224 }
2225
2226 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2227 keymgmt);
2228 if (ret < 0) {
2229 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2230 ret);
2231 goto err_turn_radio_on;
2232 }
2233
2234 set_priv_filter(usbdev);
2235
2236 ret = set_encr_mode(usbdev, pairwise, groupwise);
2237 if (ret < 0) {
2238 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2239 ret);
2240 goto err_turn_radio_on;
2241 }
2242
2243 if (channel) {
2244 ret = set_channel(usbdev, chan);
2245 if (ret < 0) {
2246 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2247 ret);
2248 goto err_turn_radio_on;
2249 }
2250 }
2251
2252 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2253 priv->encr_tx_key_index = sme->key_idx;
2254 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2255 if (ret < 0) {
2256 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2257 ret, sme->key_len, sme->key_idx);
2258 goto err_turn_radio_on;
2259 }
2260 }
2261
2262 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2263 !is_broadcast_ether_addr(sme->bssid)) {
2264 ret = set_bssid(usbdev, sme->bssid);
2265 if (ret < 0) {
2266 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2267 ret);
2268 goto err_turn_radio_on;
2269 }
2270 } else
2271 clear_bssid(usbdev);
2272
2273 length = sme->ssid_len;
2274 if (length > NDIS_802_11_LENGTH_SSID)
2275 length = NDIS_802_11_LENGTH_SSID;
2276
2277 memset(&ssid, 0, sizeof(ssid));
2278 ssid.length = cpu_to_le32(length);
2279 memcpy(ssid.essid, sme->ssid, length);
2280
2281 /* Pause and purge rx queue, so we don't pass packets before
2282 * 'media connect'-indication.
2283 */
2284 usbnet_pause_rx(usbdev);
2285 usbnet_purge_paused_rxq(usbdev);
2286
2287 ret = set_essid(usbdev, &ssid);
2288 if (ret < 0)
2289 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2290 return ret;
2291
2292 err_turn_radio_on:
2293 disassociate(usbdev, true);
2294
2295 return ret;
2296 }
2297
rndis_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)2298 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2299 u16 reason_code)
2300 {
2301 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2302 struct usbnet *usbdev = priv->usbdev;
2303
2304 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2305
2306 priv->connected = false;
2307 memset(priv->bssid, 0, ETH_ALEN);
2308
2309 return deauthenticate(usbdev);
2310 }
2311
rndis_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)2312 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2313 struct cfg80211_ibss_params *params)
2314 {
2315 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2316 struct usbnet *usbdev = priv->usbdev;
2317 struct ieee80211_channel *channel = params->channel;
2318 struct ndis_80211_ssid ssid;
2319 enum nl80211_auth_type auth_type;
2320 int ret, alg, length, chan = -1;
2321
2322 if (channel)
2323 chan = ieee80211_frequency_to_channel(channel->center_freq);
2324
2325 /* TODO: How to handle ad-hoc encryption?
2326 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2327 * pre-shared for encryption (open/shared/wpa), is key set before
2328 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2329 */
2330 if (params->privacy) {
2331 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2332 alg = RNDIS_WLAN_ALG_WEP;
2333 } else {
2334 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2335 alg = RNDIS_WLAN_ALG_NONE;
2336 }
2337
2338 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2339 params->ssid, params->bssid, chan, params->privacy);
2340
2341 if (is_associated(usbdev))
2342 disassociate(usbdev, false);
2343
2344 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2345 if (ret < 0) {
2346 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2347 ret);
2348 goto err_turn_radio_on;
2349 }
2350
2351 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2352 if (ret < 0) {
2353 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2354 ret);
2355 goto err_turn_radio_on;
2356 }
2357
2358 set_priv_filter(usbdev);
2359
2360 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2361 if (ret < 0) {
2362 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2363 ret);
2364 goto err_turn_radio_on;
2365 }
2366
2367 if (channel) {
2368 ret = set_channel(usbdev, chan);
2369 if (ret < 0) {
2370 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2371 ret);
2372 goto err_turn_radio_on;
2373 }
2374 }
2375
2376 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2377 !is_broadcast_ether_addr(params->bssid)) {
2378 ret = set_bssid(usbdev, params->bssid);
2379 if (ret < 0) {
2380 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2381 ret);
2382 goto err_turn_radio_on;
2383 }
2384 } else
2385 clear_bssid(usbdev);
2386
2387 length = params->ssid_len;
2388 if (length > NDIS_802_11_LENGTH_SSID)
2389 length = NDIS_802_11_LENGTH_SSID;
2390
2391 memset(&ssid, 0, sizeof(ssid));
2392 ssid.length = cpu_to_le32(length);
2393 memcpy(ssid.essid, params->ssid, length);
2394
2395 /* Don't need to pause rx queue for ad-hoc. */
2396 usbnet_purge_paused_rxq(usbdev);
2397 usbnet_resume_rx(usbdev);
2398
2399 ret = set_essid(usbdev, &ssid);
2400 if (ret < 0)
2401 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2402 ret);
2403 return ret;
2404
2405 err_turn_radio_on:
2406 disassociate(usbdev, true);
2407
2408 return ret;
2409 }
2410
rndis_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2411 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2412 {
2413 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2414 struct usbnet *usbdev = priv->usbdev;
2415
2416 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2417
2418 priv->connected = false;
2419 memset(priv->bssid, 0, ETH_ALEN);
2420
2421 return deauthenticate(usbdev);
2422 }
2423
rndis_set_channel(struct wiphy * wiphy,struct net_device * netdev,struct ieee80211_channel * chan,enum nl80211_channel_type channel_type)2424 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2425 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2426 {
2427 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2428 struct usbnet *usbdev = priv->usbdev;
2429
2430 return set_channel(usbdev,
2431 ieee80211_frequency_to_channel(chan->center_freq));
2432 }
2433
rndis_add_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr,struct key_params * params)2434 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2435 u8 key_index, bool pairwise, const u8 *mac_addr,
2436 struct key_params *params)
2437 {
2438 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2439 struct usbnet *usbdev = priv->usbdev;
2440 __le32 flags;
2441
2442 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2443 __func__, key_index, mac_addr, params->cipher);
2444
2445 switch (params->cipher) {
2446 case WLAN_CIPHER_SUITE_WEP40:
2447 case WLAN_CIPHER_SUITE_WEP104:
2448 return add_wep_key(usbdev, params->key, params->key_len,
2449 key_index);
2450 case WLAN_CIPHER_SUITE_TKIP:
2451 case WLAN_CIPHER_SUITE_CCMP:
2452 flags = 0;
2453
2454 if (params->seq && params->seq_len > 0)
2455 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2456 if (mac_addr)
2457 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2458 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2459
2460 return add_wpa_key(usbdev, params->key, params->key_len,
2461 key_index, mac_addr, params->seq,
2462 params->seq_len, params->cipher, flags);
2463 default:
2464 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2465 __func__, params->cipher);
2466 return -ENOTSUPP;
2467 }
2468 }
2469
rndis_del_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr)2470 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2471 u8 key_index, bool pairwise, const u8 *mac_addr)
2472 {
2473 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2474 struct usbnet *usbdev = priv->usbdev;
2475
2476 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2477
2478 return remove_key(usbdev, key_index, mac_addr);
2479 }
2480
rndis_set_default_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool unicast,bool multicast)2481 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2482 u8 key_index, bool unicast, bool multicast)
2483 {
2484 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2485 struct usbnet *usbdev = priv->usbdev;
2486 struct rndis_wlan_encr_key key;
2487
2488 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2489
2490 if (key_index >= RNDIS_WLAN_NUM_KEYS)
2491 return -ENOENT;
2492
2493 priv->encr_tx_key_index = key_index;
2494
2495 if (is_wpa_key(priv, key_index))
2496 return 0;
2497
2498 key = priv->encr_keys[key_index];
2499
2500 return add_wep_key(usbdev, key.material, key.len, key_index);
2501 }
2502
rndis_fill_station_info(struct usbnet * usbdev,struct station_info * sinfo)2503 static void rndis_fill_station_info(struct usbnet *usbdev,
2504 struct station_info *sinfo)
2505 {
2506 __le32 linkspeed, rssi;
2507 int ret, len;
2508
2509 memset(sinfo, 0, sizeof(*sinfo));
2510
2511 len = sizeof(linkspeed);
2512 ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2513 if (ret == 0) {
2514 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2515 sinfo->filled |= STATION_INFO_TX_BITRATE;
2516 }
2517
2518 len = sizeof(rssi);
2519 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2520 if (ret == 0) {
2521 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2522 sinfo->filled |= STATION_INFO_SIGNAL;
2523 }
2524 }
2525
rndis_get_station(struct wiphy * wiphy,struct net_device * dev,u8 * mac,struct station_info * sinfo)2526 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2527 u8 *mac, struct station_info *sinfo)
2528 {
2529 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2530 struct usbnet *usbdev = priv->usbdev;
2531
2532 if (compare_ether_addr(priv->bssid, mac))
2533 return -ENOENT;
2534
2535 rndis_fill_station_info(usbdev, sinfo);
2536
2537 return 0;
2538 }
2539
rndis_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)2540 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2541 int idx, u8 *mac, struct station_info *sinfo)
2542 {
2543 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2544 struct usbnet *usbdev = priv->usbdev;
2545
2546 if (idx != 0)
2547 return -ENOENT;
2548
2549 memcpy(mac, priv->bssid, ETH_ALEN);
2550
2551 rndis_fill_station_info(usbdev, sinfo);
2552
2553 return 0;
2554 }
2555
rndis_set_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2556 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2557 struct cfg80211_pmksa *pmksa)
2558 {
2559 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2560 struct usbnet *usbdev = priv->usbdev;
2561 struct ndis_80211_pmkid *pmkids;
2562 u32 *tmp = (u32 *)pmksa->pmkid;
2563
2564 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2565 pmksa->bssid,
2566 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2567 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2568
2569 pmkids = get_device_pmkids(usbdev);
2570 if (IS_ERR(pmkids)) {
2571 /* couldn't read PMKID cache from device */
2572 return PTR_ERR(pmkids);
2573 }
2574
2575 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2576 if (IS_ERR(pmkids)) {
2577 /* not found, list full, etc */
2578 return PTR_ERR(pmkids);
2579 }
2580
2581 return set_device_pmkids(usbdev, pmkids);
2582 }
2583
rndis_del_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2584 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2585 struct cfg80211_pmksa *pmksa)
2586 {
2587 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2588 struct usbnet *usbdev = priv->usbdev;
2589 struct ndis_80211_pmkid *pmkids;
2590 u32 *tmp = (u32 *)pmksa->pmkid;
2591
2592 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2593 pmksa->bssid,
2594 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2595 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2596
2597 pmkids = get_device_pmkids(usbdev);
2598 if (IS_ERR(pmkids)) {
2599 /* Couldn't read PMKID cache from device */
2600 return PTR_ERR(pmkids);
2601 }
2602
2603 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2604 if (IS_ERR(pmkids)) {
2605 /* not found, etc */
2606 return PTR_ERR(pmkids);
2607 }
2608
2609 return set_device_pmkids(usbdev, pmkids);
2610 }
2611
rndis_flush_pmksa(struct wiphy * wiphy,struct net_device * netdev)2612 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2613 {
2614 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2615 struct usbnet *usbdev = priv->usbdev;
2616 struct ndis_80211_pmkid pmkid;
2617
2618 netdev_dbg(usbdev->net, "%s()\n", __func__);
2619
2620 memset(&pmkid, 0, sizeof(pmkid));
2621
2622 pmkid.length = cpu_to_le32(sizeof(pmkid));
2623 pmkid.bssid_info_count = cpu_to_le32(0);
2624
2625 return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2626 }
2627
rndis_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)2628 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2629 bool enabled, int timeout)
2630 {
2631 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2632 struct usbnet *usbdev = priv->usbdev;
2633 int power_mode;
2634 __le32 mode;
2635 int ret;
2636
2637 if (priv->device_type != RNDIS_BCM4320B)
2638 return -ENOTSUPP;
2639
2640 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2641 enabled ? "enabled" : "disabled",
2642 timeout);
2643
2644 if (enabled)
2645 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2646 else
2647 power_mode = NDIS_80211_POWER_MODE_CAM;
2648
2649 if (power_mode == priv->power_mode)
2650 return 0;
2651
2652 priv->power_mode = power_mode;
2653
2654 mode = cpu_to_le32(power_mode);
2655 ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2656
2657 netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2658 __func__, ret);
2659
2660 return ret;
2661 }
2662
rndis_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)2663 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2664 struct net_device *dev,
2665 s32 rssi_thold, u32 rssi_hyst)
2666 {
2667 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2668
2669 priv->cqm_rssi_thold = rssi_thold;
2670 priv->cqm_rssi_hyst = rssi_hyst;
2671 priv->last_cqm_event_rssi = 0;
2672
2673 return 0;
2674 }
2675
rndis_wlan_craft_connected_bss(struct usbnet * usbdev,u8 * bssid,struct ndis_80211_assoc_info * info)2676 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2677 struct ndis_80211_assoc_info *info)
2678 {
2679 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2680 struct ieee80211_channel *channel;
2681 struct ndis_80211_ssid ssid;
2682 struct cfg80211_bss *bss;
2683 s32 signal;
2684 u64 timestamp;
2685 u16 capability;
2686 u16 beacon_interval = 0;
2687 __le32 rssi;
2688 u8 ie_buf[34];
2689 int len, ret, ie_len;
2690
2691 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2692 len = sizeof(rssi);
2693 rssi = 0;
2694 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2695 signal = level_to_qual(le32_to_cpu(rssi));
2696
2697 netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2698 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2699 level_to_qual(le32_to_cpu(rssi)));
2700
2701 /* Get AP capabilities */
2702 if (info) {
2703 capability = le16_to_cpu(info->resp_ie.capa);
2704 } else {
2705 /* Set atleast ESS/IBSS capability */
2706 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2707 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2708 }
2709
2710 /* Get channel and beacon interval */
2711 channel = get_current_channel(usbdev, &beacon_interval);
2712 if (!channel) {
2713 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2714 __func__);
2715 return;
2716 }
2717
2718 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2719 len = sizeof(ssid);
2720 memset(&ssid, 0, sizeof(ssid));
2721 ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2722 netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2723 "'%.32s'\n", __func__, ret,
2724 le32_to_cpu(ssid.length), ssid.essid);
2725
2726 if (le32_to_cpu(ssid.length) > 32)
2727 ssid.length = cpu_to_le32(32);
2728
2729 ie_buf[0] = WLAN_EID_SSID;
2730 ie_buf[1] = le32_to_cpu(ssid.length);
2731 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2732
2733 ie_len = le32_to_cpu(ssid.length) + 2;
2734
2735 /* no tsf */
2736 timestamp = 0;
2737
2738 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2739 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2740 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2741 bssid, (u32)timestamp, capability, beacon_interval, ie_len,
2742 ssid.essid, signal);
2743
2744 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2745 timestamp, capability, beacon_interval, ie_buf, ie_len,
2746 signal, GFP_KERNEL);
2747 cfg80211_put_bss(bss);
2748 }
2749
2750 /*
2751 * workers, indication handlers, device poller
2752 */
rndis_wlan_do_link_up_work(struct usbnet * usbdev)2753 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2754 {
2755 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2756 struct ndis_80211_assoc_info *info = NULL;
2757 u8 bssid[ETH_ALEN];
2758 int resp_ie_len, req_ie_len;
2759 u8 *req_ie, *resp_ie;
2760 int ret, offset;
2761 bool roamed = false;
2762 bool match_bss;
2763
2764 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2765 /* received media connect indication while connected, either
2766 * device reassociated with same AP or roamed to new. */
2767 roamed = true;
2768 }
2769
2770 req_ie_len = 0;
2771 resp_ie_len = 0;
2772 req_ie = NULL;
2773 resp_ie = NULL;
2774
2775 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2776 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2777 if (!info) {
2778 /* No memory? Try resume work later */
2779 set_bit(WORK_LINK_UP, &priv->work_pending);
2780 queue_work(priv->workqueue, &priv->work);
2781 return;
2782 }
2783
2784 /* Get association info IEs from device. */
2785 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2786 if (!ret) {
2787 req_ie_len = le32_to_cpu(info->req_ie_length);
2788 if (req_ie_len > 0) {
2789 offset = le32_to_cpu(info->offset_req_ies);
2790
2791 if (offset > CONTROL_BUFFER_SIZE)
2792 offset = CONTROL_BUFFER_SIZE;
2793
2794 req_ie = (u8 *)info + offset;
2795
2796 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2797 req_ie_len =
2798 CONTROL_BUFFER_SIZE - offset;
2799 }
2800
2801 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2802 if (resp_ie_len > 0) {
2803 offset = le32_to_cpu(info->offset_resp_ies);
2804
2805 if (offset > CONTROL_BUFFER_SIZE)
2806 offset = CONTROL_BUFFER_SIZE;
2807
2808 resp_ie = (u8 *)info + offset;
2809
2810 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2811 resp_ie_len =
2812 CONTROL_BUFFER_SIZE - offset;
2813 }
2814 } else {
2815 /* Since rndis_wlan_craft_connected_bss() might use info
2816 * later and expects info to contain valid data if
2817 * non-null, free info and set NULL here.
2818 */
2819 kfree(info);
2820 info = NULL;
2821 }
2822 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2823 return;
2824
2825 ret = get_bssid(usbdev, bssid);
2826 if (ret < 0)
2827 memset(bssid, 0, sizeof(bssid));
2828
2829 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2830 bssid, roamed ? " roamed" : "");
2831
2832 /* Internal bss list in device should contain at least the currently
2833 * connected bss and we can get it to cfg80211 with
2834 * rndis_check_bssid_list().
2835 *
2836 * NDIS spec says: "If the device is associated, but the associated
2837 * BSSID is not in its BSSID scan list, then the driver must add an
2838 * entry for the BSSID at the end of the data that it returns in
2839 * response to query of OID_802_11_BSSID_LIST."
2840 *
2841 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2842 */
2843 match_bss = false;
2844 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2845
2846 if (!is_zero_ether_addr(bssid) && !match_bss) {
2847 /* Couldn't get bss from device, we need to manually craft bss
2848 * for cfg80211.
2849 */
2850 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2851 }
2852
2853 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2854 if (!roamed)
2855 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2856 req_ie_len, resp_ie,
2857 resp_ie_len, 0, GFP_KERNEL);
2858 else
2859 cfg80211_roamed(usbdev->net,
2860 get_current_channel(usbdev, NULL),
2861 bssid, req_ie, req_ie_len,
2862 resp_ie, resp_ie_len, GFP_KERNEL);
2863 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2864 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2865
2866 if (info != NULL)
2867 kfree(info);
2868
2869 priv->connected = true;
2870 memcpy(priv->bssid, bssid, ETH_ALEN);
2871
2872 usbnet_resume_rx(usbdev);
2873 netif_carrier_on(usbdev->net);
2874 }
2875
rndis_wlan_do_link_down_work(struct usbnet * usbdev)2876 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2877 {
2878 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2879
2880 if (priv->connected) {
2881 priv->connected = false;
2882 memset(priv->bssid, 0, ETH_ALEN);
2883
2884 deauthenticate(usbdev);
2885
2886 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2887 }
2888
2889 netif_carrier_off(usbdev->net);
2890 }
2891
rndis_wlan_worker(struct work_struct * work)2892 static void rndis_wlan_worker(struct work_struct *work)
2893 {
2894 struct rndis_wlan_private *priv =
2895 container_of(work, struct rndis_wlan_private, work);
2896 struct usbnet *usbdev = priv->usbdev;
2897
2898 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2899 rndis_wlan_do_link_up_work(usbdev);
2900
2901 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2902 rndis_wlan_do_link_down_work(usbdev);
2903
2904 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2905 set_multicast_list(usbdev);
2906 }
2907
rndis_wlan_set_multicast_list(struct net_device * dev)2908 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2909 {
2910 struct usbnet *usbdev = netdev_priv(dev);
2911 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2912
2913 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2914 return;
2915
2916 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2917 queue_work(priv->workqueue, &priv->work);
2918 }
2919
rndis_wlan_auth_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2920 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2921 struct ndis_80211_status_indication *indication,
2922 int len)
2923 {
2924 u8 *buf;
2925 const char *type;
2926 int flags, buflen, key_id;
2927 bool pairwise_error, group_error;
2928 struct ndis_80211_auth_request *auth_req;
2929 enum nl80211_key_type key_type;
2930
2931 /* must have at least one array entry */
2932 if (len < offsetof(struct ndis_80211_status_indication, u) +
2933 sizeof(struct ndis_80211_auth_request)) {
2934 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2935 len);
2936 return;
2937 }
2938
2939 buf = (void *)&indication->u.auth_request[0];
2940 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2941
2942 while (buflen >= sizeof(*auth_req)) {
2943 auth_req = (void *)buf;
2944 type = "unknown";
2945 flags = le32_to_cpu(auth_req->flags);
2946 pairwise_error = false;
2947 group_error = false;
2948
2949 if (flags & 0x1)
2950 type = "reauth request";
2951 if (flags & 0x2)
2952 type = "key update request";
2953 if (flags & 0x6) {
2954 pairwise_error = true;
2955 type = "pairwise_error";
2956 }
2957 if (flags & 0xe) {
2958 group_error = true;
2959 type = "group_error";
2960 }
2961
2962 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2963 type, le32_to_cpu(auth_req->flags));
2964
2965 if (pairwise_error) {
2966 key_type = NL80211_KEYTYPE_PAIRWISE;
2967 key_id = -1;
2968
2969 cfg80211_michael_mic_failure(usbdev->net,
2970 auth_req->bssid,
2971 key_type, key_id, NULL,
2972 GFP_KERNEL);
2973 }
2974
2975 if (group_error) {
2976 key_type = NL80211_KEYTYPE_GROUP;
2977 key_id = -1;
2978
2979 cfg80211_michael_mic_failure(usbdev->net,
2980 auth_req->bssid,
2981 key_type, key_id, NULL,
2982 GFP_KERNEL);
2983 }
2984
2985 buflen -= le32_to_cpu(auth_req->length);
2986 buf += le32_to_cpu(auth_req->length);
2987 }
2988 }
2989
rndis_wlan_pmkid_cand_list_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2990 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2991 struct ndis_80211_status_indication *indication,
2992 int len)
2993 {
2994 struct ndis_80211_pmkid_cand_list *cand_list;
2995 int list_len, expected_len, i;
2996
2997 if (len < offsetof(struct ndis_80211_status_indication, u) +
2998 sizeof(struct ndis_80211_pmkid_cand_list)) {
2999 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
3000 len);
3001 return;
3002 }
3003
3004 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
3005 sizeof(struct ndis_80211_pmkid_candidate);
3006 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
3007 offsetof(struct ndis_80211_status_indication, u);
3008
3009 if (len < expected_len) {
3010 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
3011 len, expected_len);
3012 return;
3013 }
3014
3015 cand_list = &indication->u.cand_list;
3016
3017 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
3018 le32_to_cpu(cand_list->version),
3019 le32_to_cpu(cand_list->num_candidates));
3020
3021 if (le32_to_cpu(cand_list->version) != 1)
3022 return;
3023
3024 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3025 struct ndis_80211_pmkid_candidate *cand =
3026 &cand_list->candidate_list[i];
3027 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3028
3029 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3030 i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3031
3032 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3033 preauth, GFP_ATOMIC);
3034 }
3035 }
3036
rndis_wlan_media_specific_indication(struct usbnet * usbdev,struct rndis_indicate * msg,int buflen)3037 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3038 struct rndis_indicate *msg, int buflen)
3039 {
3040 struct ndis_80211_status_indication *indication;
3041 int len, offset;
3042
3043 offset = offsetof(struct rndis_indicate, status) +
3044 le32_to_cpu(msg->offset);
3045 len = le32_to_cpu(msg->length);
3046
3047 if (len < 8) {
3048 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3049 len);
3050 return;
3051 }
3052
3053 if (offset + len > buflen) {
3054 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3055 offset + len, buflen);
3056 return;
3057 }
3058
3059 indication = (void *)((u8 *)msg + offset);
3060
3061 switch (le32_to_cpu(indication->status_type)) {
3062 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3063 netdev_info(usbdev->net, "radio state indication: %i\n",
3064 le32_to_cpu(indication->u.radio_status));
3065 return;
3066
3067 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3068 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3069 le32_to_cpu(indication->u.media_stream_mode));
3070 return;
3071
3072 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3073 rndis_wlan_auth_indication(usbdev, indication, len);
3074 return;
3075
3076 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3077 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3078 return;
3079
3080 default:
3081 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3082 le32_to_cpu(indication->status_type));
3083 }
3084 }
3085
rndis_wlan_indication(struct usbnet * usbdev,void * ind,int buflen)3086 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3087 {
3088 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3089 struct rndis_indicate *msg = ind;
3090
3091 switch (msg->status) {
3092 case RNDIS_STATUS_MEDIA_CONNECT:
3093 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3094 /* OID_802_11_ADD_KEY causes sometimes extra
3095 * "media connect" indications which confuses driver
3096 * and userspace to think that device is
3097 * roaming/reassociating when it isn't.
3098 */
3099 netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3100 return;
3101 }
3102
3103 usbnet_pause_rx(usbdev);
3104
3105 netdev_info(usbdev->net, "media connect\n");
3106
3107 /* queue work to avoid recursive calls into rndis_command */
3108 set_bit(WORK_LINK_UP, &priv->work_pending);
3109 queue_work(priv->workqueue, &priv->work);
3110 break;
3111
3112 case RNDIS_STATUS_MEDIA_DISCONNECT:
3113 netdev_info(usbdev->net, "media disconnect\n");
3114
3115 /* queue work to avoid recursive calls into rndis_command */
3116 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3117 queue_work(priv->workqueue, &priv->work);
3118 break;
3119
3120 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3121 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3122 break;
3123
3124 default:
3125 netdev_info(usbdev->net, "indication: 0x%08x\n",
3126 le32_to_cpu(msg->status));
3127 break;
3128 }
3129 }
3130
rndis_wlan_get_caps(struct usbnet * usbdev,struct wiphy * wiphy)3131 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3132 {
3133 struct {
3134 __le32 num_items;
3135 __le32 items[8];
3136 } networks_supported;
3137 struct ndis_80211_capability *caps;
3138 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3139 int len, retval, i, n;
3140 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3141
3142 /* determine supported modes */
3143 len = sizeof(networks_supported);
3144 retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3145 &networks_supported, &len);
3146 if (retval >= 0) {
3147 n = le32_to_cpu(networks_supported.num_items);
3148 if (n > 8)
3149 n = 8;
3150 for (i = 0; i < n; i++) {
3151 switch (le32_to_cpu(networks_supported.items[i])) {
3152 case NDIS_80211_TYPE_FREQ_HOP:
3153 case NDIS_80211_TYPE_DIRECT_SEQ:
3154 priv->caps |= CAP_MODE_80211B;
3155 break;
3156 case NDIS_80211_TYPE_OFDM_A:
3157 priv->caps |= CAP_MODE_80211A;
3158 break;
3159 case NDIS_80211_TYPE_OFDM_G:
3160 priv->caps |= CAP_MODE_80211G;
3161 break;
3162 }
3163 }
3164 }
3165
3166 /* get device 802.11 capabilities, number of PMKIDs */
3167 caps = (struct ndis_80211_capability *)caps_buf;
3168 len = sizeof(caps_buf);
3169 retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3170 if (retval >= 0) {
3171 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3172 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3173 le32_to_cpu(caps->length),
3174 le32_to_cpu(caps->version),
3175 le32_to_cpu(caps->num_pmkids),
3176 le32_to_cpu(caps->num_auth_encr_pair));
3177 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3178 } else
3179 wiphy->max_num_pmkids = 0;
3180
3181 return retval;
3182 }
3183
rndis_do_cqm(struct usbnet * usbdev,s32 rssi)3184 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3185 {
3186 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3187 enum nl80211_cqm_rssi_threshold_event event;
3188 int thold, hyst, last_event;
3189
3190 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3191 return;
3192 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3193 return;
3194
3195 last_event = priv->last_cqm_event_rssi;
3196 thold = priv->cqm_rssi_thold;
3197 hyst = priv->cqm_rssi_hyst;
3198
3199 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3200 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3201 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3202 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3203 else
3204 return;
3205
3206 priv->last_cqm_event_rssi = rssi;
3207 cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3208 }
3209
3210 #define DEVICE_POLLER_JIFFIES (HZ)
rndis_device_poller(struct work_struct * work)3211 static void rndis_device_poller(struct work_struct *work)
3212 {
3213 struct rndis_wlan_private *priv =
3214 container_of(work, struct rndis_wlan_private,
3215 dev_poller_work.work);
3216 struct usbnet *usbdev = priv->usbdev;
3217 __le32 rssi, tmp;
3218 int len, ret, j;
3219 int update_jiffies = DEVICE_POLLER_JIFFIES;
3220 void *buf;
3221
3222 /* Only check/do workaround when connected. Calling is_associated()
3223 * also polls device with rndis_command() and catches for media link
3224 * indications.
3225 */
3226 if (!is_associated(usbdev)) {
3227 /* Workaround bad scanning in BCM4320a devices with active
3228 * background scanning when not associated.
3229 */
3230 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3231 !priv->scan_request) {
3232 /* Get previous scan results */
3233 rndis_check_bssid_list(usbdev, NULL, NULL);
3234
3235 /* Initiate new scan */
3236 rndis_start_bssid_list_scan(usbdev);
3237 }
3238
3239 goto end;
3240 }
3241
3242 len = sizeof(rssi);
3243 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3244 if (ret == 0) {
3245 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3246 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3247 }
3248
3249 netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3250 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3251
3252 /* Workaround transfer stalls on poor quality links.
3253 * TODO: find right way to fix these stalls (as stalls do not happen
3254 * with ndiswrapper/windows driver). */
3255 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3256 /* Decrease stats worker interval to catch stalls.
3257 * faster. Faster than 400-500ms causes packet loss,
3258 * Slower doesn't catch stalls fast enough.
3259 */
3260 j = msecs_to_jiffies(priv->param_workaround_interval);
3261 if (j > DEVICE_POLLER_JIFFIES)
3262 j = DEVICE_POLLER_JIFFIES;
3263 else if (j <= 0)
3264 j = 1;
3265 update_jiffies = j;
3266
3267 /* Send scan OID. Use of both OIDs is required to get device
3268 * working.
3269 */
3270 tmp = cpu_to_le32(1);
3271 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3272 sizeof(tmp));
3273
3274 len = CONTROL_BUFFER_SIZE;
3275 buf = kmalloc(len, GFP_KERNEL);
3276 if (!buf)
3277 goto end;
3278
3279 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3280 kfree(buf);
3281 }
3282
3283 end:
3284 if (update_jiffies >= HZ)
3285 update_jiffies = round_jiffies_relative(update_jiffies);
3286 else {
3287 j = round_jiffies_relative(update_jiffies);
3288 if (abs(j - update_jiffies) <= 10)
3289 update_jiffies = j;
3290 }
3291
3292 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3293 update_jiffies);
3294 }
3295
3296 /*
3297 * driver/device initialization
3298 */
rndis_copy_module_params(struct usbnet * usbdev,int device_type)3299 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3300 {
3301 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3302
3303 priv->device_type = device_type;
3304
3305 priv->param_country[0] = modparam_country[0];
3306 priv->param_country[1] = modparam_country[1];
3307 priv->param_country[2] = 0;
3308 priv->param_frameburst = modparam_frameburst;
3309 priv->param_afterburner = modparam_afterburner;
3310 priv->param_power_save = modparam_power_save;
3311 priv->param_power_output = modparam_power_output;
3312 priv->param_roamtrigger = modparam_roamtrigger;
3313 priv->param_roamdelta = modparam_roamdelta;
3314
3315 priv->param_country[0] = toupper(priv->param_country[0]);
3316 priv->param_country[1] = toupper(priv->param_country[1]);
3317 /* doesn't support EU as country code, use FI instead */
3318 if (!strcmp(priv->param_country, "EU"))
3319 strcpy(priv->param_country, "FI");
3320
3321 if (priv->param_power_save < 0)
3322 priv->param_power_save = 0;
3323 else if (priv->param_power_save > 2)
3324 priv->param_power_save = 2;
3325
3326 if (priv->param_power_output < 0)
3327 priv->param_power_output = 0;
3328 else if (priv->param_power_output > 3)
3329 priv->param_power_output = 3;
3330
3331 if (priv->param_roamtrigger < -80)
3332 priv->param_roamtrigger = -80;
3333 else if (priv->param_roamtrigger > -60)
3334 priv->param_roamtrigger = -60;
3335
3336 if (priv->param_roamdelta < 0)
3337 priv->param_roamdelta = 0;
3338 else if (priv->param_roamdelta > 2)
3339 priv->param_roamdelta = 2;
3340
3341 if (modparam_workaround_interval < 0)
3342 priv->param_workaround_interval = 500;
3343 else
3344 priv->param_workaround_interval = modparam_workaround_interval;
3345 }
3346
unknown_early_init(struct usbnet * usbdev)3347 static int unknown_early_init(struct usbnet *usbdev)
3348 {
3349 /* copy module parameters for unknown so that iwconfig reports txpower
3350 * and workaround parameter is copied to private structure correctly.
3351 */
3352 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3353
3354 /* This is unknown device, so do not try set configuration parameters.
3355 */
3356
3357 return 0;
3358 }
3359
bcm4320a_early_init(struct usbnet * usbdev)3360 static int bcm4320a_early_init(struct usbnet *usbdev)
3361 {
3362 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3363 * and workaround parameter is copied to private structure correctly.
3364 */
3365 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3366
3367 /* bcm4320a doesn't handle configuration parameters well. Try
3368 * set any and you get partially zeroed mac and broken device.
3369 */
3370
3371 return 0;
3372 }
3373
bcm4320b_early_init(struct usbnet * usbdev)3374 static int bcm4320b_early_init(struct usbnet *usbdev)
3375 {
3376 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3377 char buf[8];
3378
3379 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3380
3381 /* Early initialization settings, setting these won't have effect
3382 * if called after generic_rndis_bind().
3383 */
3384
3385 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3386 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3387 priv->param_frameburst ? "1" : "0");
3388 rndis_set_config_parameter_str(usbdev, "Afterburner",
3389 priv->param_afterburner ? "1" : "0");
3390 sprintf(buf, "%d", priv->param_power_save);
3391 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3392 sprintf(buf, "%d", priv->param_power_output);
3393 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3394 sprintf(buf, "%d", priv->param_roamtrigger);
3395 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3396 sprintf(buf, "%d", priv->param_roamdelta);
3397 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3398
3399 return 0;
3400 }
3401
3402 /* same as rndis_netdev_ops but with local multicast handler */
3403 static const struct net_device_ops rndis_wlan_netdev_ops = {
3404 .ndo_open = usbnet_open,
3405 .ndo_stop = usbnet_stop,
3406 .ndo_start_xmit = usbnet_start_xmit,
3407 .ndo_tx_timeout = usbnet_tx_timeout,
3408 .ndo_set_mac_address = eth_mac_addr,
3409 .ndo_validate_addr = eth_validate_addr,
3410 .ndo_set_rx_mode = rndis_wlan_set_multicast_list,
3411 };
3412
rndis_wlan_bind(struct usbnet * usbdev,struct usb_interface * intf)3413 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3414 {
3415 struct wiphy *wiphy;
3416 struct rndis_wlan_private *priv;
3417 int retval, len;
3418 __le32 tmp;
3419
3420 /* allocate wiphy and rndis private data
3421 * NOTE: We only support a single virtual interface, so wiphy
3422 * and wireless_dev are somewhat synonymous for this device.
3423 */
3424 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3425 if (!wiphy)
3426 return -ENOMEM;
3427
3428 priv = wiphy_priv(wiphy);
3429 usbdev->net->ieee80211_ptr = &priv->wdev;
3430 priv->wdev.wiphy = wiphy;
3431 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3432
3433 /* These have to be initialized before calling generic_rndis_bind().
3434 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3435 */
3436 usbdev->driver_priv = priv;
3437 priv->usbdev = usbdev;
3438
3439 mutex_init(&priv->command_lock);
3440
3441 /* because rndis_command() sleeps we need to use workqueue */
3442 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3443 INIT_WORK(&priv->work, rndis_wlan_worker);
3444 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3445 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3446
3447 /* try bind rndis_host */
3448 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3449 if (retval < 0)
3450 goto fail;
3451
3452 /* generic_rndis_bind set packet filter to multicast_all+
3453 * promisc mode which doesn't work well for our devices (device
3454 * picks up rssi to closest station instead of to access point).
3455 *
3456 * rndis_host wants to avoid all OID as much as possible
3457 * so do promisc/multicast handling in rndis_wlan.
3458 */
3459 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3460
3461 tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3462 retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3463 sizeof(tmp));
3464
3465 len = sizeof(tmp);
3466 retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3467 &len);
3468 priv->multicast_size = le32_to_cpu(tmp);
3469 if (retval < 0 || priv->multicast_size < 0)
3470 priv->multicast_size = 0;
3471 if (priv->multicast_size > 0)
3472 usbdev->net->flags |= IFF_MULTICAST;
3473 else
3474 usbdev->net->flags &= ~IFF_MULTICAST;
3475
3476 /* fill-out wiphy structure and register w/ cfg80211 */
3477 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3478 wiphy->privid = rndis_wiphy_privid;
3479 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3480 | BIT(NL80211_IFTYPE_ADHOC);
3481 wiphy->max_scan_ssids = 1;
3482
3483 /* TODO: fill-out band/encr information based on priv->caps */
3484 rndis_wlan_get_caps(usbdev, wiphy);
3485
3486 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3487 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3488 priv->band.channels = priv->channels;
3489 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3490 priv->band.bitrates = priv->rates;
3491 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3492 wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3493 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3494
3495 memcpy(priv->cipher_suites, rndis_cipher_suites,
3496 sizeof(rndis_cipher_suites));
3497 wiphy->cipher_suites = priv->cipher_suites;
3498 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3499
3500 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3501
3502 if (wiphy_register(wiphy)) {
3503 retval = -ENODEV;
3504 goto fail;
3505 }
3506
3507 set_default_iw_params(usbdev);
3508
3509 priv->power_mode = -1;
3510
3511 /* set default rts/frag */
3512 rndis_set_wiphy_params(wiphy,
3513 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3514
3515 /* turn radio off on init */
3516 priv->radio_on = false;
3517 disassociate(usbdev, false);
3518 netif_carrier_off(usbdev->net);
3519
3520 return 0;
3521
3522 fail:
3523 cancel_delayed_work_sync(&priv->dev_poller_work);
3524 cancel_delayed_work_sync(&priv->scan_work);
3525 cancel_work_sync(&priv->work);
3526 flush_workqueue(priv->workqueue);
3527 destroy_workqueue(priv->workqueue);
3528
3529 wiphy_free(wiphy);
3530 return retval;
3531 }
3532
rndis_wlan_unbind(struct usbnet * usbdev,struct usb_interface * intf)3533 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3534 {
3535 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3536
3537 /* turn radio off */
3538 disassociate(usbdev, false);
3539
3540 cancel_delayed_work_sync(&priv->dev_poller_work);
3541 cancel_delayed_work_sync(&priv->scan_work);
3542 cancel_work_sync(&priv->work);
3543 flush_workqueue(priv->workqueue);
3544 destroy_workqueue(priv->workqueue);
3545
3546 rndis_unbind(usbdev, intf);
3547
3548 wiphy_unregister(priv->wdev.wiphy);
3549 wiphy_free(priv->wdev.wiphy);
3550 }
3551
rndis_wlan_reset(struct usbnet * usbdev)3552 static int rndis_wlan_reset(struct usbnet *usbdev)
3553 {
3554 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3555 int retval;
3556
3557 netdev_dbg(usbdev->net, "%s()\n", __func__);
3558
3559 retval = rndis_reset(usbdev);
3560 if (retval)
3561 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3562
3563 /* rndis_reset cleared multicast list, so restore here.
3564 (set_multicast_list() also turns on current packet filter) */
3565 set_multicast_list(usbdev);
3566
3567 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3568 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3569
3570 return deauthenticate(usbdev);
3571 }
3572
rndis_wlan_stop(struct usbnet * usbdev)3573 static int rndis_wlan_stop(struct usbnet *usbdev)
3574 {
3575 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3576 int retval;
3577 __le32 filter;
3578
3579 netdev_dbg(usbdev->net, "%s()\n", __func__);
3580
3581 retval = disassociate(usbdev, false);
3582
3583 priv->work_pending = 0;
3584 cancel_delayed_work_sync(&priv->dev_poller_work);
3585 cancel_delayed_work_sync(&priv->scan_work);
3586 cancel_work_sync(&priv->work);
3587 flush_workqueue(priv->workqueue);
3588
3589 if (priv->scan_request) {
3590 cfg80211_scan_done(priv->scan_request, true);
3591 priv->scan_request = NULL;
3592 }
3593
3594 /* Set current packet filter zero to block receiving data packets from
3595 device. */
3596 filter = 0;
3597 rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3598 sizeof(filter));
3599
3600 return retval;
3601 }
3602
3603 static const struct driver_info bcm4320b_info = {
3604 .description = "Wireless RNDIS device, BCM4320b based",
3605 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3606 FLAG_AVOID_UNLINK_URBS,
3607 .bind = rndis_wlan_bind,
3608 .unbind = rndis_wlan_unbind,
3609 .status = rndis_status,
3610 .rx_fixup = rndis_rx_fixup,
3611 .tx_fixup = rndis_tx_fixup,
3612 .reset = rndis_wlan_reset,
3613 .stop = rndis_wlan_stop,
3614 .early_init = bcm4320b_early_init,
3615 .indication = rndis_wlan_indication,
3616 };
3617
3618 static const struct driver_info bcm4320a_info = {
3619 .description = "Wireless RNDIS device, BCM4320a based",
3620 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3621 FLAG_AVOID_UNLINK_URBS,
3622 .bind = rndis_wlan_bind,
3623 .unbind = rndis_wlan_unbind,
3624 .status = rndis_status,
3625 .rx_fixup = rndis_rx_fixup,
3626 .tx_fixup = rndis_tx_fixup,
3627 .reset = rndis_wlan_reset,
3628 .stop = rndis_wlan_stop,
3629 .early_init = bcm4320a_early_init,
3630 .indication = rndis_wlan_indication,
3631 };
3632
3633 static const struct driver_info rndis_wlan_info = {
3634 .description = "Wireless RNDIS device",
3635 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3636 FLAG_AVOID_UNLINK_URBS,
3637 .bind = rndis_wlan_bind,
3638 .unbind = rndis_wlan_unbind,
3639 .status = rndis_status,
3640 .rx_fixup = rndis_rx_fixup,
3641 .tx_fixup = rndis_tx_fixup,
3642 .reset = rndis_wlan_reset,
3643 .stop = rndis_wlan_stop,
3644 .early_init = unknown_early_init,
3645 .indication = rndis_wlan_indication,
3646 };
3647
3648 /*-------------------------------------------------------------------------*/
3649
3650 static const struct usb_device_id products [] = {
3651 #define RNDIS_MASTER_INTERFACE \
3652 .bInterfaceClass = USB_CLASS_COMM, \
3653 .bInterfaceSubClass = 2 /* ACM */, \
3654 .bInterfaceProtocol = 0x0ff
3655
3656 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3657 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3658 */
3659 {
3660 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3661 | USB_DEVICE_ID_MATCH_DEVICE,
3662 .idVendor = 0x0411,
3663 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3664 RNDIS_MASTER_INTERFACE,
3665 .driver_info = (unsigned long) &bcm4320b_info,
3666 }, {
3667 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3668 | USB_DEVICE_ID_MATCH_DEVICE,
3669 .idVendor = 0x0baf,
3670 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3671 RNDIS_MASTER_INTERFACE,
3672 .driver_info = (unsigned long) &bcm4320b_info,
3673 }, {
3674 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3675 | USB_DEVICE_ID_MATCH_DEVICE,
3676 .idVendor = 0x050d,
3677 .idProduct = 0x011b, /* Belkin F5D7051 */
3678 RNDIS_MASTER_INTERFACE,
3679 .driver_info = (unsigned long) &bcm4320b_info,
3680 }, {
3681 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3682 | USB_DEVICE_ID_MATCH_DEVICE,
3683 .idVendor = 0x1799, /* Belkin has two vendor ids */
3684 .idProduct = 0x011b, /* Belkin F5D7051 */
3685 RNDIS_MASTER_INTERFACE,
3686 .driver_info = (unsigned long) &bcm4320b_info,
3687 }, {
3688 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3689 | USB_DEVICE_ID_MATCH_DEVICE,
3690 .idVendor = 0x13b1,
3691 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3692 RNDIS_MASTER_INTERFACE,
3693 .driver_info = (unsigned long) &bcm4320b_info,
3694 }, {
3695 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3696 | USB_DEVICE_ID_MATCH_DEVICE,
3697 .idVendor = 0x13b1,
3698 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3699 RNDIS_MASTER_INTERFACE,
3700 .driver_info = (unsigned long) &bcm4320b_info,
3701 }, {
3702 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3703 | USB_DEVICE_ID_MATCH_DEVICE,
3704 .idVendor = 0x0b05,
3705 .idProduct = 0x1717, /* Asus WL169gE */
3706 RNDIS_MASTER_INTERFACE,
3707 .driver_info = (unsigned long) &bcm4320b_info,
3708 }, {
3709 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3710 | USB_DEVICE_ID_MATCH_DEVICE,
3711 .idVendor = 0x0a5c,
3712 .idProduct = 0xd11b, /* Eminent EM4045 */
3713 RNDIS_MASTER_INTERFACE,
3714 .driver_info = (unsigned long) &bcm4320b_info,
3715 }, {
3716 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3717 | USB_DEVICE_ID_MATCH_DEVICE,
3718 .idVendor = 0x1690,
3719 .idProduct = 0x0715, /* BT Voyager 1055 */
3720 RNDIS_MASTER_INTERFACE,
3721 .driver_info = (unsigned long) &bcm4320b_info,
3722 },
3723 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3724 * parameters available, hardware probably contain older firmware version with
3725 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3726 */
3727 {
3728 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3729 | USB_DEVICE_ID_MATCH_DEVICE,
3730 .idVendor = 0x13b1,
3731 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3732 RNDIS_MASTER_INTERFACE,
3733 .driver_info = (unsigned long) &bcm4320a_info,
3734 }, {
3735 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3736 | USB_DEVICE_ID_MATCH_DEVICE,
3737 .idVendor = 0x0baf,
3738 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3739 RNDIS_MASTER_INTERFACE,
3740 .driver_info = (unsigned long) &bcm4320a_info,
3741 }, {
3742 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3743 | USB_DEVICE_ID_MATCH_DEVICE,
3744 .idVendor = 0x0411,
3745 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3746 RNDIS_MASTER_INTERFACE,
3747 .driver_info = (unsigned long) &bcm4320a_info,
3748 },
3749 /* Generic Wireless RNDIS devices that we don't have exact
3750 * idVendor/idProduct/chip yet.
3751 */
3752 {
3753 /* RNDIS is MSFT's un-official variant of CDC ACM */
3754 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3755 .driver_info = (unsigned long) &rndis_wlan_info,
3756 }, {
3757 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3758 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3759 .driver_info = (unsigned long) &rndis_wlan_info,
3760 },
3761 { }, // END
3762 };
3763 MODULE_DEVICE_TABLE(usb, products);
3764
3765 static struct usb_driver rndis_wlan_driver = {
3766 .name = "rndis_wlan",
3767 .id_table = products,
3768 .probe = usbnet_probe,
3769 .disconnect = usbnet_disconnect,
3770 .suspend = usbnet_suspend,
3771 .resume = usbnet_resume,
3772 };
3773
3774 module_usb_driver(rndis_wlan_driver);
3775
3776 MODULE_AUTHOR("Bjorge Dijkstra");
3777 MODULE_AUTHOR("Jussi Kivilinna");
3778 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3779 MODULE_LICENSE("GPL");
3780
3781