1 /*
2 * Driver for RNDIS based wireless USB devices.
3 *
4 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
5 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, 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 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
92 #define WL_NOISE -96 /* typical noise level in dBm */
93 #define WL_SIGMAX -32 /* typical maximum signal level in dBm */
94
95
96 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
97 * based on wireless rndis) has default txpower of 13dBm.
98 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
99 * 100% : 20 mW ~ 13dBm
100 * 75% : 15 mW ~ 12dBm
101 * 50% : 10 mW ~ 10dBm
102 * 25% : 5 mW ~ 7dBm
103 */
104 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
105 #define BCM4320_DEFAULT_TXPOWER_DBM_75 12
106 #define BCM4320_DEFAULT_TXPOWER_DBM_50 10
107 #define BCM4320_DEFAULT_TXPOWER_DBM_25 7
108
109 /* Known device types */
110 #define RNDIS_UNKNOWN 0
111 #define RNDIS_BCM4320A 1
112 #define RNDIS_BCM4320B 2
113
114
115 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
116 * slightly modified for datatype endianess, etc
117 */
118 #define NDIS_802_11_LENGTH_SSID 32
119 #define NDIS_802_11_LENGTH_RATES 8
120 #define NDIS_802_11_LENGTH_RATES_EX 16
121
122 enum ndis_80211_net_type {
123 NDIS_80211_TYPE_FREQ_HOP,
124 NDIS_80211_TYPE_DIRECT_SEQ,
125 NDIS_80211_TYPE_OFDM_A,
126 NDIS_80211_TYPE_OFDM_G
127 };
128
129 enum ndis_80211_net_infra {
130 NDIS_80211_INFRA_ADHOC,
131 NDIS_80211_INFRA_INFRA,
132 NDIS_80211_INFRA_AUTO_UNKNOWN
133 };
134
135 enum ndis_80211_auth_mode {
136 NDIS_80211_AUTH_OPEN,
137 NDIS_80211_AUTH_SHARED,
138 NDIS_80211_AUTH_AUTO_SWITCH,
139 NDIS_80211_AUTH_WPA,
140 NDIS_80211_AUTH_WPA_PSK,
141 NDIS_80211_AUTH_WPA_NONE,
142 NDIS_80211_AUTH_WPA2,
143 NDIS_80211_AUTH_WPA2_PSK
144 };
145
146 enum ndis_80211_encr_status {
147 NDIS_80211_ENCR_WEP_ENABLED,
148 NDIS_80211_ENCR_DISABLED,
149 NDIS_80211_ENCR_WEP_KEY_ABSENT,
150 NDIS_80211_ENCR_NOT_SUPPORTED,
151 NDIS_80211_ENCR_TKIP_ENABLED,
152 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
153 NDIS_80211_ENCR_CCMP_ENABLED,
154 NDIS_80211_ENCR_CCMP_KEY_ABSENT
155 };
156
157 enum ndis_80211_priv_filter {
158 NDIS_80211_PRIV_ACCEPT_ALL,
159 NDIS_80211_PRIV_8021X_WEP
160 };
161
162 enum ndis_80211_status_type {
163 NDIS_80211_STATUSTYPE_AUTHENTICATION,
164 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
165 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
166 NDIS_80211_STATUSTYPE_RADIOSTATE,
167 };
168
169 enum ndis_80211_media_stream_mode {
170 NDIS_80211_MEDIA_STREAM_OFF,
171 NDIS_80211_MEDIA_STREAM_ON
172 };
173
174 enum ndis_80211_radio_status {
175 NDIS_80211_RADIO_STATUS_ON,
176 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
177 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
178 };
179
180 enum ndis_80211_addkey_bits {
181 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
182 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
183 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
184 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
185 };
186
187 enum ndis_80211_addwep_bits {
188 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
189 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
190 };
191
192 enum ndis_80211_power_mode {
193 NDIS_80211_POWER_MODE_CAM,
194 NDIS_80211_POWER_MODE_MAX_PSP,
195 NDIS_80211_POWER_MODE_FAST_PSP,
196 };
197
198 enum ndis_80211_pmkid_cand_list_flag_bits {
199 NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
200 };
201
202 struct ndis_80211_auth_request {
203 __le32 length;
204 u8 bssid[6];
205 u8 padding[2];
206 __le32 flags;
207 } __packed;
208
209 struct ndis_80211_pmkid_candidate {
210 u8 bssid[6];
211 u8 padding[2];
212 __le32 flags;
213 } __packed;
214
215 struct ndis_80211_pmkid_cand_list {
216 __le32 version;
217 __le32 num_candidates;
218 struct ndis_80211_pmkid_candidate candidate_list[0];
219 } __packed;
220
221 struct ndis_80211_status_indication {
222 __le32 status_type;
223 union {
224 __le32 media_stream_mode;
225 __le32 radio_status;
226 struct ndis_80211_auth_request auth_request[0];
227 struct ndis_80211_pmkid_cand_list cand_list;
228 } u;
229 } __packed;
230
231 struct ndis_80211_ssid {
232 __le32 length;
233 u8 essid[NDIS_802_11_LENGTH_SSID];
234 } __packed;
235
236 struct ndis_80211_conf_freq_hop {
237 __le32 length;
238 __le32 hop_pattern;
239 __le32 hop_set;
240 __le32 dwell_time;
241 } __packed;
242
243 struct ndis_80211_conf {
244 __le32 length;
245 __le32 beacon_period;
246 __le32 atim_window;
247 __le32 ds_config;
248 struct ndis_80211_conf_freq_hop fh_config;
249 } __packed;
250
251 struct ndis_80211_bssid_ex {
252 __le32 length;
253 u8 mac[6];
254 u8 padding[2];
255 struct ndis_80211_ssid ssid;
256 __le32 privacy;
257 __le32 rssi;
258 __le32 net_type;
259 struct ndis_80211_conf config;
260 __le32 net_infra;
261 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
262 __le32 ie_length;
263 u8 ies[0];
264 } __packed;
265
266 struct ndis_80211_bssid_list_ex {
267 __le32 num_items;
268 struct ndis_80211_bssid_ex bssid[0];
269 } __packed;
270
271 struct ndis_80211_fixed_ies {
272 u8 timestamp[8];
273 __le16 beacon_interval;
274 __le16 capabilities;
275 } __packed;
276
277 struct ndis_80211_wep_key {
278 __le32 size;
279 __le32 index;
280 __le32 length;
281 u8 material[32];
282 } __packed;
283
284 struct ndis_80211_key {
285 __le32 size;
286 __le32 index;
287 __le32 length;
288 u8 bssid[6];
289 u8 padding[6];
290 u8 rsc[8];
291 u8 material[32];
292 } __packed;
293
294 struct ndis_80211_remove_key {
295 __le32 size;
296 __le32 index;
297 u8 bssid[6];
298 u8 padding[2];
299 } __packed;
300
301 struct ndis_config_param {
302 __le32 name_offs;
303 __le32 name_length;
304 __le32 type;
305 __le32 value_offs;
306 __le32 value_length;
307 } __packed;
308
309 struct ndis_80211_assoc_info {
310 __le32 length;
311 __le16 req_ies;
312 struct req_ie {
313 __le16 capa;
314 __le16 listen_interval;
315 u8 cur_ap_address[6];
316 } req_ie;
317 __le32 req_ie_length;
318 __le32 offset_req_ies;
319 __le16 resp_ies;
320 struct resp_ie {
321 __le16 capa;
322 __le16 status_code;
323 __le16 assoc_id;
324 } resp_ie;
325 __le32 resp_ie_length;
326 __le32 offset_resp_ies;
327 } __packed;
328
329 struct ndis_80211_auth_encr_pair {
330 __le32 auth_mode;
331 __le32 encr_mode;
332 } __packed;
333
334 struct ndis_80211_capability {
335 __le32 length;
336 __le32 version;
337 __le32 num_pmkids;
338 __le32 num_auth_encr_pair;
339 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
340 } __packed;
341
342 struct ndis_80211_bssid_info {
343 u8 bssid[6];
344 u8 pmkid[16];
345 } __packed;
346
347 struct ndis_80211_pmkid {
348 __le32 length;
349 __le32 bssid_info_count;
350 struct ndis_80211_bssid_info bssid_info[0];
351 } __packed;
352
353 /*
354 * private data
355 */
356 #define CAP_MODE_80211A 1
357 #define CAP_MODE_80211B 2
358 #define CAP_MODE_80211G 4
359 #define CAP_MODE_MASK 7
360
361 #define WORK_LINK_UP (1<<0)
362 #define WORK_LINK_DOWN (1<<1)
363 #define WORK_SET_MULTICAST_LIST (1<<2)
364
365 #define RNDIS_WLAN_ALG_NONE 0
366 #define RNDIS_WLAN_ALG_WEP (1<<0)
367 #define RNDIS_WLAN_ALG_TKIP (1<<1)
368 #define RNDIS_WLAN_ALG_CCMP (1<<2)
369
370 #define RNDIS_WLAN_NUM_KEYS 4
371 #define RNDIS_WLAN_KEY_MGMT_NONE 0
372 #define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
373 #define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
374
375 #define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
376
377 static const struct ieee80211_channel rndis_channels[] = {
378 { .center_freq = 2412 },
379 { .center_freq = 2417 },
380 { .center_freq = 2422 },
381 { .center_freq = 2427 },
382 { .center_freq = 2432 },
383 { .center_freq = 2437 },
384 { .center_freq = 2442 },
385 { .center_freq = 2447 },
386 { .center_freq = 2452 },
387 { .center_freq = 2457 },
388 { .center_freq = 2462 },
389 { .center_freq = 2467 },
390 { .center_freq = 2472 },
391 { .center_freq = 2484 },
392 };
393
394 static const struct ieee80211_rate rndis_rates[] = {
395 { .bitrate = 10 },
396 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
397 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
398 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
399 { .bitrate = 60 },
400 { .bitrate = 90 },
401 { .bitrate = 120 },
402 { .bitrate = 180 },
403 { .bitrate = 240 },
404 { .bitrate = 360 },
405 { .bitrate = 480 },
406 { .bitrate = 540 }
407 };
408
409 static const u32 rndis_cipher_suites[] = {
410 WLAN_CIPHER_SUITE_WEP40,
411 WLAN_CIPHER_SUITE_WEP104,
412 WLAN_CIPHER_SUITE_TKIP,
413 WLAN_CIPHER_SUITE_CCMP,
414 };
415
416 struct rndis_wlan_encr_key {
417 int len;
418 u32 cipher;
419 u8 material[32];
420 u8 bssid[ETH_ALEN];
421 bool pairwise;
422 bool tx_key;
423 };
424
425 /* RNDIS device private data */
426 struct rndis_wlan_private {
427 struct usbnet *usbdev;
428
429 struct wireless_dev wdev;
430
431 struct cfg80211_scan_request *scan_request;
432
433 struct workqueue_struct *workqueue;
434 struct delayed_work dev_poller_work;
435 struct delayed_work scan_work;
436 struct work_struct work;
437 struct mutex command_lock;
438 unsigned long work_pending;
439 int last_qual;
440 s32 cqm_rssi_thold;
441 u32 cqm_rssi_hyst;
442 int last_cqm_event_rssi;
443
444 struct ieee80211_supported_band band;
445 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
446 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
447 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
448
449 int device_type;
450 int caps;
451 int multicast_size;
452
453 /* module parameters */
454 char param_country[4];
455 int param_frameburst;
456 int param_afterburner;
457 int param_power_save;
458 int param_power_output;
459 int param_roamtrigger;
460 int param_roamdelta;
461 u32 param_workaround_interval;
462
463 /* hardware state */
464 bool radio_on;
465 int power_mode;
466 int infra_mode;
467 bool connected;
468 u8 bssid[ETH_ALEN];
469 u32 current_command_oid;
470
471 /* encryption stuff */
472 u8 encr_tx_key_index;
473 struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
474 int wpa_version;
475
476 u8 command_buffer[COMMAND_BUFFER_SIZE];
477 };
478
479 /*
480 * cfg80211 ops
481 */
482 static int rndis_change_virtual_intf(struct wiphy *wiphy,
483 struct net_device *dev,
484 enum nl80211_iftype type, u32 *flags,
485 struct vif_params *params);
486
487 static int rndis_scan(struct wiphy *wiphy,
488 struct cfg80211_scan_request *request);
489
490 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
491
492 static int rndis_set_tx_power(struct wiphy *wiphy,
493 struct wireless_dev *wdev,
494 enum nl80211_tx_power_setting type,
495 int mbm);
496 static int rndis_get_tx_power(struct wiphy *wiphy,
497 struct wireless_dev *wdev,
498 int *dbm);
499
500 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
501 struct cfg80211_connect_params *sme);
502
503 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
504 u16 reason_code);
505
506 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
507 struct cfg80211_ibss_params *params);
508
509 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
510
511 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
512 u8 key_index, bool pairwise, const u8 *mac_addr,
513 struct key_params *params);
514
515 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
516 u8 key_index, bool pairwise, const u8 *mac_addr);
517
518 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
519 u8 key_index, bool unicast, bool multicast);
520
521 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
522 u8 *mac, struct station_info *sinfo);
523
524 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
525 int idx, u8 *mac, struct station_info *sinfo);
526
527 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
528 struct cfg80211_pmksa *pmksa);
529
530 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
531 struct cfg80211_pmksa *pmksa);
532
533 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
534
535 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
536 bool enabled, int timeout);
537
538 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
539 struct net_device *dev,
540 s32 rssi_thold, u32 rssi_hyst);
541
542 static const struct cfg80211_ops rndis_config_ops = {
543 .change_virtual_intf = rndis_change_virtual_intf,
544 .scan = rndis_scan,
545 .set_wiphy_params = rndis_set_wiphy_params,
546 .set_tx_power = rndis_set_tx_power,
547 .get_tx_power = rndis_get_tx_power,
548 .connect = rndis_connect,
549 .disconnect = rndis_disconnect,
550 .join_ibss = rndis_join_ibss,
551 .leave_ibss = rndis_leave_ibss,
552 .add_key = rndis_add_key,
553 .del_key = rndis_del_key,
554 .set_default_key = rndis_set_default_key,
555 .get_station = rndis_get_station,
556 .dump_station = rndis_dump_station,
557 .set_pmksa = rndis_set_pmksa,
558 .del_pmksa = rndis_del_pmksa,
559 .flush_pmksa = rndis_flush_pmksa,
560 .set_power_mgmt = rndis_set_power_mgmt,
561 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
562 };
563
564 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
565
566
get_rndis_wlan_priv(struct usbnet * dev)567 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
568 {
569 return (struct rndis_wlan_private *)dev->driver_priv;
570 }
571
get_bcm4320_power_dbm(struct rndis_wlan_private * priv)572 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
573 {
574 switch (priv->param_power_output) {
575 default:
576 case 3:
577 return BCM4320_DEFAULT_TXPOWER_DBM_100;
578 case 2:
579 return BCM4320_DEFAULT_TXPOWER_DBM_75;
580 case 1:
581 return BCM4320_DEFAULT_TXPOWER_DBM_50;
582 case 0:
583 return BCM4320_DEFAULT_TXPOWER_DBM_25;
584 }
585 }
586
is_wpa_key(struct rndis_wlan_private * priv,u8 idx)587 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
588 {
589 int cipher = priv->encr_keys[idx].cipher;
590
591 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
592 cipher == WLAN_CIPHER_SUITE_TKIP);
593 }
594
rndis_cipher_to_alg(u32 cipher)595 static int rndis_cipher_to_alg(u32 cipher)
596 {
597 switch (cipher) {
598 default:
599 return RNDIS_WLAN_ALG_NONE;
600 case WLAN_CIPHER_SUITE_WEP40:
601 case WLAN_CIPHER_SUITE_WEP104:
602 return RNDIS_WLAN_ALG_WEP;
603 case WLAN_CIPHER_SUITE_TKIP:
604 return RNDIS_WLAN_ALG_TKIP;
605 case WLAN_CIPHER_SUITE_CCMP:
606 return RNDIS_WLAN_ALG_CCMP;
607 }
608 }
609
rndis_akm_suite_to_key_mgmt(u32 akm_suite)610 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
611 {
612 switch (akm_suite) {
613 default:
614 return RNDIS_WLAN_KEY_MGMT_NONE;
615 case WLAN_AKM_SUITE_8021X:
616 return RNDIS_WLAN_KEY_MGMT_802_1X;
617 case WLAN_AKM_SUITE_PSK:
618 return RNDIS_WLAN_KEY_MGMT_PSK;
619 }
620 }
621
622 #ifdef DEBUG
oid_to_string(u32 oid)623 static const char *oid_to_string(u32 oid)
624 {
625 switch (oid) {
626 #define OID_STR(oid) case oid: return(#oid)
627 /* from rndis_host.h */
628 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
629 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
630 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
631 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
632
633 /* from rndis_wlan.c */
634 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
635 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
636
637 OID_STR(RNDIS_OID_GEN_XMIT_OK);
638 OID_STR(RNDIS_OID_GEN_RCV_OK);
639 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
640 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
641 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
642
643 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
644 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
645 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
646
647 OID_STR(RNDIS_OID_802_11_BSSID);
648 OID_STR(RNDIS_OID_802_11_SSID);
649 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
650 OID_STR(RNDIS_OID_802_11_ADD_WEP);
651 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
652 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
653 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
654 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
655 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
656 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
657 OID_STR(RNDIS_OID_802_11_ADD_KEY);
658 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
659 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
660 OID_STR(RNDIS_OID_802_11_CAPABILITY);
661 OID_STR(RNDIS_OID_802_11_PMKID);
662 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
663 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
664 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
665 OID_STR(RNDIS_OID_802_11_RSSI);
666 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
667 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
668 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
669 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
670 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
671 OID_STR(RNDIS_OID_802_11_POWER_MODE);
672 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
673 #undef OID_STR
674 }
675
676 return "?";
677 }
678 #else
oid_to_string(u32 oid)679 static const char *oid_to_string(u32 oid)
680 {
681 return "?";
682 }
683 #endif
684
685 /* translate error code */
rndis_error_status(__le32 rndis_status)686 static int rndis_error_status(__le32 rndis_status)
687 {
688 int ret = -EINVAL;
689 switch (le32_to_cpu(rndis_status)) {
690 case RNDIS_STATUS_SUCCESS:
691 ret = 0;
692 break;
693 case RNDIS_STATUS_FAILURE:
694 case RNDIS_STATUS_INVALID_DATA:
695 ret = -EINVAL;
696 break;
697 case RNDIS_STATUS_NOT_SUPPORTED:
698 ret = -EOPNOTSUPP;
699 break;
700 case RNDIS_STATUS_ADAPTER_NOT_READY:
701 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
702 ret = -EBUSY;
703 break;
704 }
705 return ret;
706 }
707
rndis_query_oid(struct usbnet * dev,u32 oid,void * data,int * len)708 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
709 {
710 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
711 union {
712 void *buf;
713 struct rndis_msg_hdr *header;
714 struct rndis_query *get;
715 struct rndis_query_c *get_c;
716 } u;
717 int ret, buflen;
718 int resplen, respoffs, copylen;
719
720 buflen = *len + sizeof(*u.get);
721 if (buflen < CONTROL_BUFFER_SIZE)
722 buflen = CONTROL_BUFFER_SIZE;
723
724 if (buflen > COMMAND_BUFFER_SIZE) {
725 u.buf = kmalloc(buflen, GFP_KERNEL);
726 if (!u.buf)
727 return -ENOMEM;
728 } else {
729 u.buf = priv->command_buffer;
730 }
731
732 mutex_lock(&priv->command_lock);
733
734 memset(u.get, 0, sizeof *u.get);
735 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
736 u.get->msg_len = cpu_to_le32(sizeof *u.get);
737 u.get->oid = cpu_to_le32(oid);
738
739 priv->current_command_oid = oid;
740 ret = rndis_command(dev, u.header, buflen);
741 priv->current_command_oid = 0;
742 if (ret < 0)
743 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
744 __func__, oid_to_string(oid), ret,
745 le32_to_cpu(u.get_c->status));
746
747 if (ret == 0) {
748 resplen = le32_to_cpu(u.get_c->len);
749 respoffs = le32_to_cpu(u.get_c->offset) + 8;
750
751 if (respoffs > buflen) {
752 /* Device returned data offset outside buffer, error. */
753 netdev_dbg(dev->net, "%s(%s): received invalid "
754 "data offset: %d > %d\n", __func__,
755 oid_to_string(oid), respoffs, buflen);
756
757 ret = -EINVAL;
758 goto exit_unlock;
759 }
760
761 if ((resplen + respoffs) > buflen) {
762 /* Device would have returned more data if buffer would
763 * have been big enough. Copy just the bits that we got.
764 */
765 copylen = buflen - respoffs;
766 } else {
767 copylen = resplen;
768 }
769
770 if (copylen > *len)
771 copylen = *len;
772
773 memcpy(data, u.buf + respoffs, copylen);
774
775 *len = resplen;
776
777 ret = rndis_error_status(u.get_c->status);
778 if (ret < 0)
779 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
780 __func__, oid_to_string(oid),
781 le32_to_cpu(u.get_c->status), ret);
782 }
783
784 exit_unlock:
785 mutex_unlock(&priv->command_lock);
786
787 if (u.buf != priv->command_buffer)
788 kfree(u.buf);
789 return ret;
790 }
791
rndis_set_oid(struct usbnet * dev,u32 oid,const void * data,int len)792 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
793 int len)
794 {
795 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
796 union {
797 void *buf;
798 struct rndis_msg_hdr *header;
799 struct rndis_set *set;
800 struct rndis_set_c *set_c;
801 } u;
802 int ret, buflen;
803
804 buflen = len + sizeof(*u.set);
805 if (buflen < CONTROL_BUFFER_SIZE)
806 buflen = CONTROL_BUFFER_SIZE;
807
808 if (buflen > COMMAND_BUFFER_SIZE) {
809 u.buf = kmalloc(buflen, GFP_KERNEL);
810 if (!u.buf)
811 return -ENOMEM;
812 } else {
813 u.buf = priv->command_buffer;
814 }
815
816 mutex_lock(&priv->command_lock);
817
818 memset(u.set, 0, sizeof *u.set);
819 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
820 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
821 u.set->oid = cpu_to_le32(oid);
822 u.set->len = cpu_to_le32(len);
823 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
824 u.set->handle = cpu_to_le32(0);
825 memcpy(u.buf + sizeof(*u.set), data, len);
826
827 priv->current_command_oid = oid;
828 ret = rndis_command(dev, u.header, buflen);
829 priv->current_command_oid = 0;
830 if (ret < 0)
831 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
832 __func__, oid_to_string(oid), ret,
833 le32_to_cpu(u.set_c->status));
834
835 if (ret == 0) {
836 ret = rndis_error_status(u.set_c->status);
837
838 if (ret < 0)
839 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
840 __func__, oid_to_string(oid),
841 le32_to_cpu(u.set_c->status), ret);
842 }
843
844 mutex_unlock(&priv->command_lock);
845
846 if (u.buf != priv->command_buffer)
847 kfree(u.buf);
848 return ret;
849 }
850
rndis_reset(struct usbnet * usbdev)851 static int rndis_reset(struct usbnet *usbdev)
852 {
853 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
854 struct rndis_reset *reset;
855 int ret;
856
857 mutex_lock(&priv->command_lock);
858
859 reset = (void *)priv->command_buffer;
860 memset(reset, 0, sizeof(*reset));
861 reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
862 reset->msg_len = cpu_to_le32(sizeof(*reset));
863 priv->current_command_oid = 0;
864 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
865
866 mutex_unlock(&priv->command_lock);
867
868 if (ret < 0)
869 return ret;
870 return 0;
871 }
872
873 /*
874 * Specs say that we can only set config parameters only soon after device
875 * initialization.
876 * value_type: 0 = u32, 2 = unicode string
877 */
rndis_set_config_parameter(struct usbnet * dev,char * param,int value_type,void * value)878 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
879 int value_type, void *value)
880 {
881 struct ndis_config_param *infobuf;
882 int value_len, info_len, param_len, ret, i;
883 __le16 *unibuf;
884 __le32 *dst_value;
885
886 if (value_type == 0)
887 value_len = sizeof(__le32);
888 else if (value_type == 2)
889 value_len = strlen(value) * sizeof(__le16);
890 else
891 return -EINVAL;
892
893 param_len = strlen(param) * sizeof(__le16);
894 info_len = sizeof(*infobuf) + param_len + value_len;
895
896 #ifdef DEBUG
897 info_len += 12;
898 #endif
899 infobuf = kmalloc(info_len, GFP_KERNEL);
900 if (!infobuf)
901 return -ENOMEM;
902
903 #ifdef DEBUG
904 info_len -= 12;
905 /* extra 12 bytes are for padding (debug output) */
906 memset(infobuf, 0xCC, info_len + 12);
907 #endif
908
909 if (value_type == 2)
910 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
911 param, (u8 *)value);
912 else
913 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
914 param, *(u32 *)value);
915
916 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
917 infobuf->name_length = cpu_to_le32(param_len);
918 infobuf->type = cpu_to_le32(value_type);
919 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
920 infobuf->value_length = cpu_to_le32(value_len);
921
922 /* simple string to unicode string conversion */
923 unibuf = (void *)infobuf + sizeof(*infobuf);
924 for (i = 0; i < param_len / sizeof(__le16); i++)
925 unibuf[i] = cpu_to_le16(param[i]);
926
927 if (value_type == 2) {
928 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
929 for (i = 0; i < value_len / sizeof(__le16); i++)
930 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
931 } else {
932 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
933 *dst_value = cpu_to_le32(*(u32 *)value);
934 }
935
936 #ifdef DEBUG
937 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
938 for (i = 0; i < info_len; i += 12) {
939 u32 *tmp = (u32 *)((u8 *)infobuf + i);
940 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
941 cpu_to_be32(tmp[0]),
942 cpu_to_be32(tmp[1]),
943 cpu_to_be32(tmp[2]));
944 }
945 #endif
946
947 ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
948 infobuf, info_len);
949 if (ret != 0)
950 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
951 ret);
952
953 kfree(infobuf);
954 return ret;
955 }
956
rndis_set_config_parameter_str(struct usbnet * dev,char * param,char * value)957 static int rndis_set_config_parameter_str(struct usbnet *dev,
958 char *param, char *value)
959 {
960 return rndis_set_config_parameter(dev, param, 2, value);
961 }
962
963 /*
964 * data conversion functions
965 */
level_to_qual(int level)966 static int level_to_qual(int level)
967 {
968 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
969 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
970 }
971
972 /*
973 * common functions
974 */
975 static int set_infra_mode(struct usbnet *usbdev, int mode);
976 static void restore_keys(struct usbnet *usbdev);
977 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
978 bool *matched);
979
rndis_start_bssid_list_scan(struct usbnet * usbdev)980 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
981 {
982 __le32 tmp;
983
984 /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
985 tmp = cpu_to_le32(1);
986 return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
987 sizeof(tmp));
988 }
989
set_essid(struct usbnet * usbdev,struct ndis_80211_ssid * ssid)990 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
991 {
992 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
993 int ret;
994
995 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
996 ssid, sizeof(*ssid));
997 if (ret < 0) {
998 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
999 return ret;
1000 }
1001 if (ret == 0) {
1002 priv->radio_on = true;
1003 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1004 }
1005
1006 return ret;
1007 }
1008
set_bssid(struct usbnet * usbdev,const u8 * bssid)1009 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1010 {
1011 int ret;
1012
1013 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1014 bssid, ETH_ALEN);
1015 if (ret < 0) {
1016 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1017 bssid, ret);
1018 return ret;
1019 }
1020
1021 return ret;
1022 }
1023
clear_bssid(struct usbnet * usbdev)1024 static int clear_bssid(struct usbnet *usbdev)
1025 {
1026 static const u8 broadcast_mac[ETH_ALEN] = {
1027 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1028 };
1029
1030 return set_bssid(usbdev, broadcast_mac);
1031 }
1032
get_bssid(struct usbnet * usbdev,u8 bssid[ETH_ALEN])1033 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1034 {
1035 int ret, len;
1036
1037 len = ETH_ALEN;
1038 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1039 bssid, &len);
1040
1041 if (ret != 0)
1042 memset(bssid, 0, ETH_ALEN);
1043
1044 return ret;
1045 }
1046
get_association_info(struct usbnet * usbdev,struct ndis_80211_assoc_info * info,int len)1047 static int get_association_info(struct usbnet *usbdev,
1048 struct ndis_80211_assoc_info *info, int len)
1049 {
1050 return rndis_query_oid(usbdev,
1051 RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1052 info, &len);
1053 }
1054
is_associated(struct usbnet * usbdev)1055 static bool is_associated(struct usbnet *usbdev)
1056 {
1057 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1058 u8 bssid[ETH_ALEN];
1059 int ret;
1060
1061 if (!priv->radio_on)
1062 return false;
1063
1064 ret = get_bssid(usbdev, bssid);
1065
1066 return (ret == 0 && !is_zero_ether_addr(bssid));
1067 }
1068
disassociate(struct usbnet * usbdev,bool reset_ssid)1069 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1070 {
1071 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1072 struct ndis_80211_ssid ssid;
1073 int i, ret = 0;
1074
1075 if (priv->radio_on) {
1076 ret = rndis_set_oid(usbdev,
1077 RNDIS_OID_802_11_DISASSOCIATE,
1078 NULL, 0);
1079 if (ret == 0) {
1080 priv->radio_on = false;
1081 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1082 __func__);
1083
1084 if (reset_ssid)
1085 msleep(100);
1086 }
1087 }
1088
1089 /* disassociate causes radio to be turned off; if reset_ssid
1090 * is given, set random ssid to enable radio */
1091 if (reset_ssid) {
1092 /* Set device to infrastructure mode so we don't get ad-hoc
1093 * 'media connect' indications with the random ssid.
1094 */
1095 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1096
1097 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1098 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1099 ssid.essid[0] = 0x1;
1100 ssid.essid[1] = 0xff;
1101 for (i = 2; i < sizeof(ssid.essid); i++)
1102 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1103 ret = set_essid(usbdev, &ssid);
1104 }
1105 return ret;
1106 }
1107
set_auth_mode(struct usbnet * usbdev,u32 wpa_version,enum nl80211_auth_type auth_type,int keymgmt)1108 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1109 enum nl80211_auth_type auth_type, int keymgmt)
1110 {
1111 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1112 __le32 tmp;
1113 int auth_mode, ret;
1114
1115 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1116 __func__, wpa_version, auth_type, keymgmt);
1117
1118 if (wpa_version & NL80211_WPA_VERSION_2) {
1119 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1120 auth_mode = NDIS_80211_AUTH_WPA2;
1121 else
1122 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1123 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1124 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1125 auth_mode = NDIS_80211_AUTH_WPA;
1126 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1127 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1128 else
1129 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1130 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1131 auth_mode = NDIS_80211_AUTH_SHARED;
1132 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1133 auth_mode = NDIS_80211_AUTH_OPEN;
1134 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1135 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1136 else
1137 return -ENOTSUPP;
1138
1139 tmp = cpu_to_le32(auth_mode);
1140 ret = rndis_set_oid(usbdev,
1141 RNDIS_OID_802_11_AUTHENTICATION_MODE,
1142 &tmp, sizeof(tmp));
1143 if (ret != 0) {
1144 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1145 ret);
1146 return ret;
1147 }
1148
1149 priv->wpa_version = wpa_version;
1150
1151 return 0;
1152 }
1153
set_priv_filter(struct usbnet * usbdev)1154 static int set_priv_filter(struct usbnet *usbdev)
1155 {
1156 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1157 __le32 tmp;
1158
1159 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1160 __func__, priv->wpa_version);
1161
1162 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1163 priv->wpa_version & NL80211_WPA_VERSION_1)
1164 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1165 else
1166 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1167
1168 return rndis_set_oid(usbdev,
1169 RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1170 sizeof(tmp));
1171 }
1172
set_encr_mode(struct usbnet * usbdev,int pairwise,int groupwise)1173 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1174 {
1175 __le32 tmp;
1176 int encr_mode, ret;
1177
1178 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1179 __func__, pairwise, groupwise);
1180
1181 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1182 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1183 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1184 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1185 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1186 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1187 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1188 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1189 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1190 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1191 else
1192 encr_mode = NDIS_80211_ENCR_DISABLED;
1193
1194 tmp = cpu_to_le32(encr_mode);
1195 ret = rndis_set_oid(usbdev,
1196 RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1197 sizeof(tmp));
1198 if (ret != 0) {
1199 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1200 ret);
1201 return ret;
1202 }
1203
1204 return 0;
1205 }
1206
set_infra_mode(struct usbnet * usbdev,int mode)1207 static int set_infra_mode(struct usbnet *usbdev, int mode)
1208 {
1209 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1210 __le32 tmp;
1211 int ret;
1212
1213 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1214 __func__, priv->infra_mode);
1215
1216 tmp = cpu_to_le32(mode);
1217 ret = rndis_set_oid(usbdev,
1218 RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1219 &tmp, sizeof(tmp));
1220 if (ret != 0) {
1221 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1222 ret);
1223 return ret;
1224 }
1225
1226 /* NDIS drivers clear keys when infrastructure mode is
1227 * changed. But Linux tools assume otherwise. So set the
1228 * keys */
1229 restore_keys(usbdev);
1230
1231 priv->infra_mode = mode;
1232 return 0;
1233 }
1234
set_rts_threshold(struct usbnet * usbdev,u32 rts_threshold)1235 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1236 {
1237 __le32 tmp;
1238
1239 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1240
1241 if (rts_threshold < 0 || rts_threshold > 2347)
1242 rts_threshold = 2347;
1243
1244 tmp = cpu_to_le32(rts_threshold);
1245 return rndis_set_oid(usbdev,
1246 RNDIS_OID_802_11_RTS_THRESHOLD,
1247 &tmp, sizeof(tmp));
1248 }
1249
set_frag_threshold(struct usbnet * usbdev,u32 frag_threshold)1250 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1251 {
1252 __le32 tmp;
1253
1254 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1255
1256 if (frag_threshold < 256 || frag_threshold > 2346)
1257 frag_threshold = 2346;
1258
1259 tmp = cpu_to_le32(frag_threshold);
1260 return rndis_set_oid(usbdev,
1261 RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1262 &tmp, sizeof(tmp));
1263 }
1264
set_default_iw_params(struct usbnet * usbdev)1265 static void set_default_iw_params(struct usbnet *usbdev)
1266 {
1267 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1268 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1269 RNDIS_WLAN_KEY_MGMT_NONE);
1270 set_priv_filter(usbdev);
1271 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1272 }
1273
deauthenticate(struct usbnet * usbdev)1274 static int deauthenticate(struct usbnet *usbdev)
1275 {
1276 int ret;
1277
1278 ret = disassociate(usbdev, true);
1279 set_default_iw_params(usbdev);
1280 return ret;
1281 }
1282
set_channel(struct usbnet * usbdev,int channel)1283 static int set_channel(struct usbnet *usbdev, int channel)
1284 {
1285 struct ndis_80211_conf config;
1286 unsigned int dsconfig;
1287 int len, ret;
1288
1289 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1290
1291 /* this OID is valid only when not associated */
1292 if (is_associated(usbdev))
1293 return 0;
1294
1295 dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1296
1297 len = sizeof(config);
1298 ret = rndis_query_oid(usbdev,
1299 RNDIS_OID_802_11_CONFIGURATION,
1300 &config, &len);
1301 if (ret < 0) {
1302 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1303 __func__);
1304 return ret;
1305 }
1306
1307 config.ds_config = cpu_to_le32(dsconfig);
1308 ret = rndis_set_oid(usbdev,
1309 RNDIS_OID_802_11_CONFIGURATION,
1310 &config, sizeof(config));
1311
1312 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1313
1314 return ret;
1315 }
1316
get_current_channel(struct usbnet * usbdev,u32 * beacon_period)1317 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1318 u32 *beacon_period)
1319 {
1320 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1321 struct ieee80211_channel *channel;
1322 struct ndis_80211_conf config;
1323 int len, ret;
1324
1325 /* Get channel and beacon interval */
1326 len = sizeof(config);
1327 ret = rndis_query_oid(usbdev,
1328 RNDIS_OID_802_11_CONFIGURATION,
1329 &config, &len);
1330 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1331 __func__, ret);
1332 if (ret < 0)
1333 return NULL;
1334
1335 channel = ieee80211_get_channel(priv->wdev.wiphy,
1336 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1337 if (!channel)
1338 return NULL;
1339
1340 if (beacon_period)
1341 *beacon_period = le32_to_cpu(config.beacon_period);
1342 return channel;
1343 }
1344
1345 /* index must be 0 - N, as per NDIS */
add_wep_key(struct usbnet * usbdev,const u8 * key,int key_len,u8 index)1346 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1347 u8 index)
1348 {
1349 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1350 struct ndis_80211_wep_key ndis_key;
1351 u32 cipher;
1352 int ret;
1353
1354 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1355 __func__, index, key_len);
1356
1357 if (index >= RNDIS_WLAN_NUM_KEYS)
1358 return -EINVAL;
1359
1360 if (key_len == 5)
1361 cipher = WLAN_CIPHER_SUITE_WEP40;
1362 else if (key_len == 13)
1363 cipher = WLAN_CIPHER_SUITE_WEP104;
1364 else
1365 return -EINVAL;
1366
1367 memset(&ndis_key, 0, sizeof(ndis_key));
1368
1369 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1370 ndis_key.length = cpu_to_le32(key_len);
1371 ndis_key.index = cpu_to_le32(index);
1372 memcpy(&ndis_key.material, key, key_len);
1373
1374 if (index == priv->encr_tx_key_index) {
1375 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1376 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1377 RNDIS_WLAN_ALG_NONE);
1378 if (ret)
1379 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1380 ret);
1381 }
1382
1383 ret = rndis_set_oid(usbdev,
1384 RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1385 sizeof(ndis_key));
1386 if (ret != 0) {
1387 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1388 index + 1, ret);
1389 return ret;
1390 }
1391
1392 priv->encr_keys[index].len = key_len;
1393 priv->encr_keys[index].cipher = cipher;
1394 memcpy(&priv->encr_keys[index].material, key, key_len);
1395 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1396
1397 return 0;
1398 }
1399
add_wpa_key(struct usbnet * usbdev,const u8 * key,int key_len,u8 index,const u8 * addr,const u8 * rx_seq,int seq_len,u32 cipher,__le32 flags)1400 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1401 u8 index, const u8 *addr, const u8 *rx_seq,
1402 int seq_len, u32 cipher, __le32 flags)
1403 {
1404 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1405 struct ndis_80211_key ndis_key;
1406 bool is_addr_ok;
1407 int ret;
1408
1409 if (index >= RNDIS_WLAN_NUM_KEYS) {
1410 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1411 __func__, index);
1412 return -EINVAL;
1413 }
1414 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1415 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1416 __func__, key_len);
1417 return -EINVAL;
1418 }
1419 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1420 if (!rx_seq || seq_len <= 0) {
1421 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1422 __func__);
1423 return -EINVAL;
1424 }
1425 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1426 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1427 return -EINVAL;
1428 }
1429 }
1430
1431 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1432 !is_broadcast_ether_addr(addr);
1433 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1434 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1435 __func__, addr);
1436 return -EINVAL;
1437 }
1438
1439 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1440 __func__, index,
1441 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1442 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1443 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1444
1445 memset(&ndis_key, 0, sizeof(ndis_key));
1446
1447 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1448 sizeof(ndis_key.material) + key_len);
1449 ndis_key.length = cpu_to_le32(key_len);
1450 ndis_key.index = cpu_to_le32(index) | flags;
1451
1452 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1453 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1454 * different order than NDIS spec, so swap the order here. */
1455 memcpy(ndis_key.material, key, 16);
1456 memcpy(ndis_key.material + 16, key + 24, 8);
1457 memcpy(ndis_key.material + 24, key + 16, 8);
1458 } else
1459 memcpy(ndis_key.material, key, key_len);
1460
1461 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1462 memcpy(ndis_key.rsc, rx_seq, seq_len);
1463
1464 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1465 /* pairwise key */
1466 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1467 } else {
1468 /* group key */
1469 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1470 memset(ndis_key.bssid, 0xff, ETH_ALEN);
1471 else
1472 get_bssid(usbdev, ndis_key.bssid);
1473 }
1474
1475 ret = rndis_set_oid(usbdev,
1476 RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1477 le32_to_cpu(ndis_key.size));
1478 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1479 __func__, ret);
1480 if (ret != 0)
1481 return ret;
1482
1483 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1484 priv->encr_keys[index].len = key_len;
1485 priv->encr_keys[index].cipher = cipher;
1486 memcpy(&priv->encr_keys[index].material, key, key_len);
1487 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1488 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1489 else
1490 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1491
1492 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1493 priv->encr_tx_key_index = index;
1494
1495 return 0;
1496 }
1497
restore_key(struct usbnet * usbdev,u8 key_idx)1498 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1499 {
1500 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1501 struct rndis_wlan_encr_key key;
1502
1503 if (is_wpa_key(priv, key_idx))
1504 return 0;
1505
1506 key = priv->encr_keys[key_idx];
1507
1508 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1509
1510 if (key.len == 0)
1511 return 0;
1512
1513 return add_wep_key(usbdev, key.material, key.len, key_idx);
1514 }
1515
restore_keys(struct usbnet * usbdev)1516 static void restore_keys(struct usbnet *usbdev)
1517 {
1518 int i;
1519
1520 for (i = 0; i < 4; i++)
1521 restore_key(usbdev, i);
1522 }
1523
clear_key(struct rndis_wlan_private * priv,u8 idx)1524 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1525 {
1526 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1527 }
1528
1529 /* remove_key is for both wep and wpa */
remove_key(struct usbnet * usbdev,u8 index,const u8 * bssid)1530 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1531 {
1532 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1533 struct ndis_80211_remove_key remove_key;
1534 __le32 keyindex;
1535 bool is_wpa;
1536 int ret;
1537
1538 if (index >= RNDIS_WLAN_NUM_KEYS)
1539 return -ENOENT;
1540
1541 if (priv->encr_keys[index].len == 0)
1542 return 0;
1543
1544 is_wpa = is_wpa_key(priv, index);
1545
1546 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1547 __func__, index, is_wpa ? "wpa" : "wep",
1548 priv->encr_keys[index].len);
1549
1550 clear_key(priv, index);
1551
1552 if (is_wpa) {
1553 remove_key.size = cpu_to_le32(sizeof(remove_key));
1554 remove_key.index = cpu_to_le32(index);
1555 if (bssid) {
1556 /* pairwise key */
1557 if (!is_broadcast_ether_addr(bssid))
1558 remove_key.index |=
1559 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1560 memcpy(remove_key.bssid, bssid,
1561 sizeof(remove_key.bssid));
1562 } else
1563 memset(remove_key.bssid, 0xff,
1564 sizeof(remove_key.bssid));
1565
1566 ret = rndis_set_oid(usbdev,
1567 RNDIS_OID_802_11_REMOVE_KEY,
1568 &remove_key, sizeof(remove_key));
1569 if (ret != 0)
1570 return ret;
1571 } else {
1572 keyindex = cpu_to_le32(index);
1573 ret = rndis_set_oid(usbdev,
1574 RNDIS_OID_802_11_REMOVE_WEP,
1575 &keyindex, sizeof(keyindex));
1576 if (ret != 0) {
1577 netdev_warn(usbdev->net,
1578 "removing encryption key %d failed (%08X)\n",
1579 index, ret);
1580 return ret;
1581 }
1582 }
1583
1584 /* if it is transmit key, disable encryption */
1585 if (index == priv->encr_tx_key_index)
1586 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1587
1588 return 0;
1589 }
1590
set_multicast_list(struct usbnet * usbdev)1591 static void set_multicast_list(struct usbnet *usbdev)
1592 {
1593 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1594 struct netdev_hw_addr *ha;
1595 __le32 filter, basefilter;
1596 int ret;
1597 char *mc_addrs = NULL;
1598 int mc_count;
1599
1600 basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1601 RNDIS_PACKET_TYPE_BROADCAST);
1602
1603 if (usbdev->net->flags & IFF_PROMISC) {
1604 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1605 RNDIS_PACKET_TYPE_ALL_LOCAL);
1606 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1607 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1608 }
1609
1610 if (filter != basefilter)
1611 goto set_filter;
1612
1613 /*
1614 * mc_list should be accessed holding the lock, so copy addresses to
1615 * local buffer first.
1616 */
1617 netif_addr_lock_bh(usbdev->net);
1618 mc_count = netdev_mc_count(usbdev->net);
1619 if (mc_count > priv->multicast_size) {
1620 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1621 } else if (mc_count) {
1622 int i = 0;
1623
1624 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1625 if (!mc_addrs) {
1626 netif_addr_unlock_bh(usbdev->net);
1627 return;
1628 }
1629
1630 netdev_for_each_mc_addr(ha, usbdev->net)
1631 memcpy(mc_addrs + i++ * ETH_ALEN,
1632 ha->addr, ETH_ALEN);
1633 }
1634 netif_addr_unlock_bh(usbdev->net);
1635
1636 if (filter != basefilter)
1637 goto set_filter;
1638
1639 if (mc_count) {
1640 ret = rndis_set_oid(usbdev,
1641 RNDIS_OID_802_3_MULTICAST_LIST,
1642 mc_addrs, mc_count * ETH_ALEN);
1643 kfree(mc_addrs);
1644 if (ret == 0)
1645 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1646 else
1647 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1648
1649 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1650 mc_count, priv->multicast_size, ret);
1651 }
1652
1653 set_filter:
1654 ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1655 sizeof(filter));
1656 if (ret < 0) {
1657 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1658 le32_to_cpu(filter));
1659 }
1660
1661 netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1662 le32_to_cpu(filter), ret);
1663 }
1664
1665 #ifdef DEBUG
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1666 static void debug_print_pmkids(struct usbnet *usbdev,
1667 struct ndis_80211_pmkid *pmkids,
1668 const char *func_str)
1669 {
1670 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1671 int i, len, count, max_pmkids, entry_len;
1672
1673 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1674 len = le32_to_cpu(pmkids->length);
1675 count = le32_to_cpu(pmkids->bssid_info_count);
1676
1677 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1678
1679 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1680 "%d)\n", func_str, count, len, entry_len);
1681
1682 if (count > max_pmkids)
1683 count = max_pmkids;
1684
1685 for (i = 0; i < count; i++) {
1686 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1687
1688 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1689 "pmkid: %08X:%08X:%08X:%08X\n",
1690 func_str, pmkids->bssid_info[i].bssid,
1691 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1692 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1693 }
1694 }
1695 #else
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1696 static void debug_print_pmkids(struct usbnet *usbdev,
1697 struct ndis_80211_pmkid *pmkids,
1698 const char *func_str)
1699 {
1700 return;
1701 }
1702 #endif
1703
get_device_pmkids(struct usbnet * usbdev)1704 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1705 {
1706 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1707 struct ndis_80211_pmkid *pmkids;
1708 int len, ret, max_pmkids;
1709
1710 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1711 len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1712
1713 pmkids = kzalloc(len, GFP_KERNEL);
1714 if (!pmkids)
1715 return ERR_PTR(-ENOMEM);
1716
1717 pmkids->length = cpu_to_le32(len);
1718 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1719
1720 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1721 pmkids, &len);
1722 if (ret < 0) {
1723 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1724 " -> %d\n", __func__, len, max_pmkids, ret);
1725
1726 kfree(pmkids);
1727 return ERR_PTR(ret);
1728 }
1729
1730 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1731 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1732
1733 debug_print_pmkids(usbdev, pmkids, __func__);
1734
1735 return pmkids;
1736 }
1737
set_device_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids)1738 static int set_device_pmkids(struct usbnet *usbdev,
1739 struct ndis_80211_pmkid *pmkids)
1740 {
1741 int ret, len, num_pmkids;
1742
1743 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1744 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1745 pmkids->length = cpu_to_le32(len);
1746
1747 debug_print_pmkids(usbdev, pmkids, __func__);
1748
1749 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1750 le32_to_cpu(pmkids->length));
1751 if (ret < 0) {
1752 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1753 "\n", __func__, len, num_pmkids, ret);
1754 }
1755
1756 kfree(pmkids);
1757 return ret;
1758 }
1759
remove_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1760 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1761 struct ndis_80211_pmkid *pmkids,
1762 struct cfg80211_pmksa *pmksa,
1763 int max_pmkids)
1764 {
1765 int i, newlen, err;
1766 unsigned int count;
1767
1768 count = le32_to_cpu(pmkids->bssid_info_count);
1769
1770 if (count > max_pmkids)
1771 count = max_pmkids;
1772
1773 for (i = 0; i < count; i++)
1774 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1775 pmksa->bssid))
1776 break;
1777
1778 /* pmkid not found */
1779 if (i == count) {
1780 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1781 __func__, pmksa->bssid);
1782 err = -ENOENT;
1783 goto error;
1784 }
1785
1786 for (; i + 1 < count; i++)
1787 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1788
1789 count--;
1790 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1791
1792 pmkids->length = cpu_to_le32(newlen);
1793 pmkids->bssid_info_count = cpu_to_le32(count);
1794
1795 return pmkids;
1796 error:
1797 kfree(pmkids);
1798 return ERR_PTR(err);
1799 }
1800
update_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1801 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1802 struct ndis_80211_pmkid *pmkids,
1803 struct cfg80211_pmksa *pmksa,
1804 int max_pmkids)
1805 {
1806 struct ndis_80211_pmkid *new_pmkids;
1807 int i, err, newlen;
1808 unsigned int count;
1809
1810 count = le32_to_cpu(pmkids->bssid_info_count);
1811
1812 if (count > max_pmkids)
1813 count = max_pmkids;
1814
1815 /* update with new pmkid */
1816 for (i = 0; i < count; i++) {
1817 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1818 pmksa->bssid))
1819 continue;
1820
1821 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1822 WLAN_PMKID_LEN);
1823
1824 return pmkids;
1825 }
1826
1827 /* out of space, return error */
1828 if (i == max_pmkids) {
1829 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1830 err = -ENOSPC;
1831 goto error;
1832 }
1833
1834 /* add new pmkid */
1835 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1836
1837 new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1838 if (!new_pmkids) {
1839 err = -ENOMEM;
1840 goto error;
1841 }
1842 pmkids = new_pmkids;
1843
1844 pmkids->length = cpu_to_le32(newlen);
1845 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1846
1847 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1848 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1849
1850 return pmkids;
1851 error:
1852 kfree(pmkids);
1853 return ERR_PTR(err);
1854 }
1855
1856 /*
1857 * cfg80211 ops
1858 */
rndis_change_virtual_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,u32 * flags,struct vif_params * params)1859 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1860 struct net_device *dev,
1861 enum nl80211_iftype type, u32 *flags,
1862 struct vif_params *params)
1863 {
1864 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1865 struct usbnet *usbdev = priv->usbdev;
1866 int mode;
1867
1868 switch (type) {
1869 case NL80211_IFTYPE_ADHOC:
1870 mode = NDIS_80211_INFRA_ADHOC;
1871 break;
1872 case NL80211_IFTYPE_STATION:
1873 mode = NDIS_80211_INFRA_INFRA;
1874 break;
1875 default:
1876 return -EINVAL;
1877 }
1878
1879 priv->wdev.iftype = type;
1880
1881 return set_infra_mode(usbdev, mode);
1882 }
1883
rndis_set_wiphy_params(struct wiphy * wiphy,u32 changed)1884 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1885 {
1886 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1887 struct usbnet *usbdev = priv->usbdev;
1888 int err;
1889
1890 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1891 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1892 if (err < 0)
1893 return err;
1894 }
1895
1896 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1897 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1898 if (err < 0)
1899 return err;
1900 }
1901
1902 return 0;
1903 }
1904
rndis_set_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_tx_power_setting type,int mbm)1905 static int rndis_set_tx_power(struct wiphy *wiphy,
1906 struct wireless_dev *wdev,
1907 enum nl80211_tx_power_setting type,
1908 int mbm)
1909 {
1910 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1911 struct usbnet *usbdev = priv->usbdev;
1912
1913 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1914 __func__, type, mbm);
1915
1916 if (mbm < 0 || (mbm % 100))
1917 return -ENOTSUPP;
1918
1919 /* Device doesn't support changing txpower after initialization, only
1920 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1921 * currently used.
1922 */
1923 if (type == NL80211_TX_POWER_AUTOMATIC ||
1924 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1925 if (!priv->radio_on)
1926 disassociate(usbdev, true); /* turn on radio */
1927
1928 return 0;
1929 }
1930
1931 return -ENOTSUPP;
1932 }
1933
rndis_get_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int * dbm)1934 static int rndis_get_tx_power(struct wiphy *wiphy,
1935 struct wireless_dev *wdev,
1936 int *dbm)
1937 {
1938 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1939 struct usbnet *usbdev = priv->usbdev;
1940
1941 *dbm = get_bcm4320_power_dbm(priv);
1942
1943 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1944
1945 return 0;
1946 }
1947
1948 #define SCAN_DELAY_JIFFIES (6 * HZ)
rndis_scan(struct wiphy * wiphy,struct cfg80211_scan_request * request)1949 static int rndis_scan(struct wiphy *wiphy,
1950 struct cfg80211_scan_request *request)
1951 {
1952 struct net_device *dev = request->wdev->netdev;
1953 struct usbnet *usbdev = netdev_priv(dev);
1954 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1955 int ret;
1956 int delay = SCAN_DELAY_JIFFIES;
1957
1958 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1959
1960 /* Get current bssid list from device before new scan, as new scan
1961 * clears internal bssid list.
1962 */
1963 rndis_check_bssid_list(usbdev, NULL, NULL);
1964
1965 if (priv->scan_request && priv->scan_request != request)
1966 return -EBUSY;
1967
1968 priv->scan_request = request;
1969
1970 ret = rndis_start_bssid_list_scan(usbdev);
1971 if (ret == 0) {
1972 if (priv->device_type == RNDIS_BCM4320A)
1973 delay = HZ;
1974
1975 /* Wait before retrieving scan results from device */
1976 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1977 }
1978
1979 return ret;
1980 }
1981
rndis_bss_info_update(struct usbnet * usbdev,struct ndis_80211_bssid_ex * bssid)1982 static bool rndis_bss_info_update(struct usbnet *usbdev,
1983 struct ndis_80211_bssid_ex *bssid)
1984 {
1985 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1986 struct ieee80211_channel *channel;
1987 struct cfg80211_bss *bss;
1988 s32 signal;
1989 u64 timestamp;
1990 u16 capability;
1991 u16 beacon_interval;
1992 struct ndis_80211_fixed_ies *fixed;
1993 int ie_len, bssid_len;
1994 u8 *ie;
1995
1996 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1997 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1998
1999 /* parse bssid structure */
2000 bssid_len = le32_to_cpu(bssid->length);
2001
2002 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2003 sizeof(struct ndis_80211_fixed_ies))
2004 return NULL;
2005
2006 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2007
2008 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2009 ie_len = min(bssid_len - (int)sizeof(*bssid),
2010 (int)le32_to_cpu(bssid->ie_length));
2011 ie_len -= sizeof(struct ndis_80211_fixed_ies);
2012 if (ie_len < 0)
2013 return NULL;
2014
2015 /* extract data for cfg80211_inform_bss */
2016 channel = ieee80211_get_channel(priv->wdev.wiphy,
2017 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2018 if (!channel)
2019 return NULL;
2020
2021 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2022 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2023 capability = le16_to_cpu(fixed->capabilities);
2024 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2025
2026 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2027 timestamp, capability, beacon_interval, ie, ie_len, signal,
2028 GFP_KERNEL);
2029 cfg80211_put_bss(priv->wdev.wiphy, bss);
2030
2031 return (bss != NULL);
2032 }
2033
next_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int * bssid_len,void * buf,int len)2034 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2035 struct ndis_80211_bssid_ex *bssid,
2036 int *bssid_len, void *buf, int len)
2037 {
2038 void *buf_end, *bssid_end;
2039
2040 buf_end = (char *)buf + len;
2041 bssid_end = (char *)bssid + *bssid_len;
2042
2043 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2044 *bssid_len = 0;
2045 return NULL;
2046 } else {
2047 bssid = (void *)((char *)bssid + *bssid_len);
2048 *bssid_len = le32_to_cpu(bssid->length);
2049 return bssid;
2050 }
2051 }
2052
check_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int bssid_len,void * buf,int len)2053 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2054 int bssid_len, void *buf, int len)
2055 {
2056 void *buf_end, *bssid_end;
2057
2058 if (!bssid || bssid_len <= 0 || bssid_len > len)
2059 return false;
2060
2061 buf_end = (char *)buf + len;
2062 bssid_end = (char *)bssid + bssid_len;
2063
2064 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2065 }
2066
rndis_check_bssid_list(struct usbnet * usbdev,u8 * match_bssid,bool * matched)2067 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2068 bool *matched)
2069 {
2070 void *buf = NULL;
2071 struct ndis_80211_bssid_list_ex *bssid_list;
2072 struct ndis_80211_bssid_ex *bssid;
2073 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2074
2075 netdev_dbg(usbdev->net, "%s()\n", __func__);
2076
2077 len = CONTROL_BUFFER_SIZE;
2078 resize_buf:
2079 buf = kzalloc(len, GFP_KERNEL);
2080 if (!buf) {
2081 ret = -ENOMEM;
2082 goto out;
2083 }
2084
2085 /* BSSID-list might have got bigger last time we checked, keep
2086 * resizing until it won't get any bigger.
2087 */
2088 new_len = len;
2089 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2090 buf, &new_len);
2091 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2092 goto out;
2093
2094 if (new_len > len) {
2095 len = new_len;
2096 kfree(buf);
2097 goto resize_buf;
2098 }
2099
2100 len = new_len;
2101
2102 bssid_list = buf;
2103 count = le32_to_cpu(bssid_list->num_items);
2104 real_count = 0;
2105 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2106
2107 bssid_len = 0;
2108 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2109
2110 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2111 * received 'num_items' and walking through full bssid buffer instead.
2112 */
2113 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2114 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2115 matched) {
2116 if (ether_addr_equal(bssid->mac, match_bssid))
2117 *matched = true;
2118 }
2119
2120 real_count++;
2121 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2122 }
2123
2124 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2125 " %d\n", __func__, count, real_count);
2126
2127 out:
2128 kfree(buf);
2129 return ret;
2130 }
2131
rndis_get_scan_results(struct work_struct * work)2132 static void rndis_get_scan_results(struct work_struct *work)
2133 {
2134 struct rndis_wlan_private *priv =
2135 container_of(work, struct rndis_wlan_private, scan_work.work);
2136 struct usbnet *usbdev = priv->usbdev;
2137 int ret;
2138
2139 netdev_dbg(usbdev->net, "get_scan_results\n");
2140
2141 if (!priv->scan_request)
2142 return;
2143
2144 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2145
2146 cfg80211_scan_done(priv->scan_request, ret < 0);
2147
2148 priv->scan_request = NULL;
2149 }
2150
rndis_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)2151 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2152 struct cfg80211_connect_params *sme)
2153 {
2154 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2155 struct usbnet *usbdev = priv->usbdev;
2156 struct ieee80211_channel *channel = sme->channel;
2157 struct ndis_80211_ssid ssid;
2158 int pairwise = RNDIS_WLAN_ALG_NONE;
2159 int groupwise = RNDIS_WLAN_ALG_NONE;
2160 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2161 int length, i, ret, chan = -1;
2162
2163 if (channel)
2164 chan = ieee80211_frequency_to_channel(channel->center_freq);
2165
2166 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2167 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2168 pairwise |=
2169 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2170
2171 if (sme->crypto.n_ciphers_pairwise > 0 &&
2172 pairwise == RNDIS_WLAN_ALG_NONE) {
2173 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2174 return -ENOTSUPP;
2175 }
2176
2177 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2178 keymgmt |=
2179 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2180
2181 if (sme->crypto.n_akm_suites > 0 &&
2182 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2183 netdev_err(usbdev->net, "Invalid keymgmt\n");
2184 return -ENOTSUPP;
2185 }
2186
2187 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2188 sme->ssid, sme->bssid, chan,
2189 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2190 groupwise, pairwise, keymgmt);
2191
2192 if (is_associated(usbdev))
2193 disassociate(usbdev, false);
2194
2195 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2196 if (ret < 0) {
2197 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2198 ret);
2199 goto err_turn_radio_on;
2200 }
2201
2202 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2203 keymgmt);
2204 if (ret < 0) {
2205 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2206 ret);
2207 goto err_turn_radio_on;
2208 }
2209
2210 set_priv_filter(usbdev);
2211
2212 ret = set_encr_mode(usbdev, pairwise, groupwise);
2213 if (ret < 0) {
2214 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2215 ret);
2216 goto err_turn_radio_on;
2217 }
2218
2219 if (channel) {
2220 ret = set_channel(usbdev, chan);
2221 if (ret < 0) {
2222 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2223 ret);
2224 goto err_turn_radio_on;
2225 }
2226 }
2227
2228 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2229 priv->encr_tx_key_index = sme->key_idx;
2230 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2231 if (ret < 0) {
2232 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2233 ret, sme->key_len, sme->key_idx);
2234 goto err_turn_radio_on;
2235 }
2236 }
2237
2238 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2239 !is_broadcast_ether_addr(sme->bssid)) {
2240 ret = set_bssid(usbdev, sme->bssid);
2241 if (ret < 0) {
2242 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2243 ret);
2244 goto err_turn_radio_on;
2245 }
2246 } else
2247 clear_bssid(usbdev);
2248
2249 length = sme->ssid_len;
2250 if (length > NDIS_802_11_LENGTH_SSID)
2251 length = NDIS_802_11_LENGTH_SSID;
2252
2253 memset(&ssid, 0, sizeof(ssid));
2254 ssid.length = cpu_to_le32(length);
2255 memcpy(ssid.essid, sme->ssid, length);
2256
2257 /* Pause and purge rx queue, so we don't pass packets before
2258 * 'media connect'-indication.
2259 */
2260 usbnet_pause_rx(usbdev);
2261 usbnet_purge_paused_rxq(usbdev);
2262
2263 ret = set_essid(usbdev, &ssid);
2264 if (ret < 0)
2265 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2266 return ret;
2267
2268 err_turn_radio_on:
2269 disassociate(usbdev, true);
2270
2271 return ret;
2272 }
2273
rndis_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)2274 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2275 u16 reason_code)
2276 {
2277 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2278 struct usbnet *usbdev = priv->usbdev;
2279
2280 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2281
2282 priv->connected = false;
2283 memset(priv->bssid, 0, ETH_ALEN);
2284
2285 return deauthenticate(usbdev);
2286 }
2287
rndis_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)2288 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2289 struct cfg80211_ibss_params *params)
2290 {
2291 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2292 struct usbnet *usbdev = priv->usbdev;
2293 struct ieee80211_channel *channel = params->chandef.chan;
2294 struct ndis_80211_ssid ssid;
2295 enum nl80211_auth_type auth_type;
2296 int ret, alg, length, chan = -1;
2297
2298 if (channel)
2299 chan = ieee80211_frequency_to_channel(channel->center_freq);
2300
2301 /* TODO: How to handle ad-hoc encryption?
2302 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2303 * pre-shared for encryption (open/shared/wpa), is key set before
2304 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2305 */
2306 if (params->privacy) {
2307 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2308 alg = RNDIS_WLAN_ALG_WEP;
2309 } else {
2310 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2311 alg = RNDIS_WLAN_ALG_NONE;
2312 }
2313
2314 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2315 params->ssid, params->bssid, chan, params->privacy);
2316
2317 if (is_associated(usbdev))
2318 disassociate(usbdev, false);
2319
2320 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2321 if (ret < 0) {
2322 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2323 ret);
2324 goto err_turn_radio_on;
2325 }
2326
2327 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2328 if (ret < 0) {
2329 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2330 ret);
2331 goto err_turn_radio_on;
2332 }
2333
2334 set_priv_filter(usbdev);
2335
2336 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2337 if (ret < 0) {
2338 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2339 ret);
2340 goto err_turn_radio_on;
2341 }
2342
2343 if (channel) {
2344 ret = set_channel(usbdev, chan);
2345 if (ret < 0) {
2346 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2347 ret);
2348 goto err_turn_radio_on;
2349 }
2350 }
2351
2352 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2353 !is_broadcast_ether_addr(params->bssid)) {
2354 ret = set_bssid(usbdev, params->bssid);
2355 if (ret < 0) {
2356 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2357 ret);
2358 goto err_turn_radio_on;
2359 }
2360 } else
2361 clear_bssid(usbdev);
2362
2363 length = params->ssid_len;
2364 if (length > NDIS_802_11_LENGTH_SSID)
2365 length = NDIS_802_11_LENGTH_SSID;
2366
2367 memset(&ssid, 0, sizeof(ssid));
2368 ssid.length = cpu_to_le32(length);
2369 memcpy(ssid.essid, params->ssid, length);
2370
2371 /* Don't need to pause rx queue for ad-hoc. */
2372 usbnet_purge_paused_rxq(usbdev);
2373 usbnet_resume_rx(usbdev);
2374
2375 ret = set_essid(usbdev, &ssid);
2376 if (ret < 0)
2377 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2378 ret);
2379 return ret;
2380
2381 err_turn_radio_on:
2382 disassociate(usbdev, true);
2383
2384 return ret;
2385 }
2386
rndis_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2387 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2388 {
2389 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2390 struct usbnet *usbdev = priv->usbdev;
2391
2392 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2393
2394 priv->connected = false;
2395 memset(priv->bssid, 0, ETH_ALEN);
2396
2397 return deauthenticate(usbdev);
2398 }
2399
rndis_add_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr,struct key_params * params)2400 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2401 u8 key_index, bool pairwise, const u8 *mac_addr,
2402 struct key_params *params)
2403 {
2404 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2405 struct usbnet *usbdev = priv->usbdev;
2406 __le32 flags;
2407
2408 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2409 __func__, key_index, mac_addr, params->cipher);
2410
2411 switch (params->cipher) {
2412 case WLAN_CIPHER_SUITE_WEP40:
2413 case WLAN_CIPHER_SUITE_WEP104:
2414 return add_wep_key(usbdev, params->key, params->key_len,
2415 key_index);
2416 case WLAN_CIPHER_SUITE_TKIP:
2417 case WLAN_CIPHER_SUITE_CCMP:
2418 flags = 0;
2419
2420 if (params->seq && params->seq_len > 0)
2421 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2422 if (mac_addr)
2423 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2424 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2425
2426 return add_wpa_key(usbdev, params->key, params->key_len,
2427 key_index, mac_addr, params->seq,
2428 params->seq_len, params->cipher, flags);
2429 default:
2430 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2431 __func__, params->cipher);
2432 return -ENOTSUPP;
2433 }
2434 }
2435
rndis_del_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr)2436 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2437 u8 key_index, bool pairwise, const u8 *mac_addr)
2438 {
2439 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2440 struct usbnet *usbdev = priv->usbdev;
2441
2442 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2443
2444 return remove_key(usbdev, key_index, mac_addr);
2445 }
2446
rndis_set_default_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool unicast,bool multicast)2447 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2448 u8 key_index, bool unicast, bool multicast)
2449 {
2450 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2451 struct usbnet *usbdev = priv->usbdev;
2452 struct rndis_wlan_encr_key key;
2453
2454 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2455
2456 if (key_index >= RNDIS_WLAN_NUM_KEYS)
2457 return -ENOENT;
2458
2459 priv->encr_tx_key_index = key_index;
2460
2461 if (is_wpa_key(priv, key_index))
2462 return 0;
2463
2464 key = priv->encr_keys[key_index];
2465
2466 return add_wep_key(usbdev, key.material, key.len, key_index);
2467 }
2468
rndis_fill_station_info(struct usbnet * usbdev,struct station_info * sinfo)2469 static void rndis_fill_station_info(struct usbnet *usbdev,
2470 struct station_info *sinfo)
2471 {
2472 __le32 linkspeed, rssi;
2473 int ret, len;
2474
2475 memset(sinfo, 0, sizeof(*sinfo));
2476
2477 len = sizeof(linkspeed);
2478 ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2479 if (ret == 0) {
2480 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2481 sinfo->filled |= STATION_INFO_TX_BITRATE;
2482 }
2483
2484 len = sizeof(rssi);
2485 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2486 &rssi, &len);
2487 if (ret == 0) {
2488 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2489 sinfo->filled |= STATION_INFO_SIGNAL;
2490 }
2491 }
2492
rndis_get_station(struct wiphy * wiphy,struct net_device * dev,u8 * mac,struct station_info * sinfo)2493 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2494 u8 *mac, struct station_info *sinfo)
2495 {
2496 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2497 struct usbnet *usbdev = priv->usbdev;
2498
2499 if (!ether_addr_equal(priv->bssid, mac))
2500 return -ENOENT;
2501
2502 rndis_fill_station_info(usbdev, sinfo);
2503
2504 return 0;
2505 }
2506
rndis_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)2507 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2508 int idx, u8 *mac, struct station_info *sinfo)
2509 {
2510 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2511 struct usbnet *usbdev = priv->usbdev;
2512
2513 if (idx != 0)
2514 return -ENOENT;
2515
2516 memcpy(mac, priv->bssid, ETH_ALEN);
2517
2518 rndis_fill_station_info(usbdev, sinfo);
2519
2520 return 0;
2521 }
2522
rndis_set_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2523 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2524 struct cfg80211_pmksa *pmksa)
2525 {
2526 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2527 struct usbnet *usbdev = priv->usbdev;
2528 struct ndis_80211_pmkid *pmkids;
2529 u32 *tmp = (u32 *)pmksa->pmkid;
2530
2531 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2532 pmksa->bssid,
2533 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2534 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2535
2536 pmkids = get_device_pmkids(usbdev);
2537 if (IS_ERR(pmkids)) {
2538 /* couldn't read PMKID cache from device */
2539 return PTR_ERR(pmkids);
2540 }
2541
2542 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2543 if (IS_ERR(pmkids)) {
2544 /* not found, list full, etc */
2545 return PTR_ERR(pmkids);
2546 }
2547
2548 return set_device_pmkids(usbdev, pmkids);
2549 }
2550
rndis_del_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2551 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2552 struct cfg80211_pmksa *pmksa)
2553 {
2554 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2555 struct usbnet *usbdev = priv->usbdev;
2556 struct ndis_80211_pmkid *pmkids;
2557 u32 *tmp = (u32 *)pmksa->pmkid;
2558
2559 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2560 pmksa->bssid,
2561 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2562 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2563
2564 pmkids = get_device_pmkids(usbdev);
2565 if (IS_ERR(pmkids)) {
2566 /* Couldn't read PMKID cache from device */
2567 return PTR_ERR(pmkids);
2568 }
2569
2570 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2571 if (IS_ERR(pmkids)) {
2572 /* not found, etc */
2573 return PTR_ERR(pmkids);
2574 }
2575
2576 return set_device_pmkids(usbdev, pmkids);
2577 }
2578
rndis_flush_pmksa(struct wiphy * wiphy,struct net_device * netdev)2579 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2580 {
2581 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2582 struct usbnet *usbdev = priv->usbdev;
2583 struct ndis_80211_pmkid pmkid;
2584
2585 netdev_dbg(usbdev->net, "%s()\n", __func__);
2586
2587 memset(&pmkid, 0, sizeof(pmkid));
2588
2589 pmkid.length = cpu_to_le32(sizeof(pmkid));
2590 pmkid.bssid_info_count = cpu_to_le32(0);
2591
2592 return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2593 &pmkid, sizeof(pmkid));
2594 }
2595
rndis_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)2596 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2597 bool enabled, int timeout)
2598 {
2599 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2600 struct usbnet *usbdev = priv->usbdev;
2601 int power_mode;
2602 __le32 mode;
2603 int ret;
2604
2605 if (priv->device_type != RNDIS_BCM4320B)
2606 return -ENOTSUPP;
2607
2608 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2609 enabled ? "enabled" : "disabled",
2610 timeout);
2611
2612 if (enabled)
2613 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2614 else
2615 power_mode = NDIS_80211_POWER_MODE_CAM;
2616
2617 if (power_mode == priv->power_mode)
2618 return 0;
2619
2620 priv->power_mode = power_mode;
2621
2622 mode = cpu_to_le32(power_mode);
2623 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2624 &mode, sizeof(mode));
2625
2626 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2627 __func__, ret);
2628
2629 return ret;
2630 }
2631
rndis_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)2632 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2633 struct net_device *dev,
2634 s32 rssi_thold, u32 rssi_hyst)
2635 {
2636 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2637
2638 priv->cqm_rssi_thold = rssi_thold;
2639 priv->cqm_rssi_hyst = rssi_hyst;
2640 priv->last_cqm_event_rssi = 0;
2641
2642 return 0;
2643 }
2644
rndis_wlan_craft_connected_bss(struct usbnet * usbdev,u8 * bssid,struct ndis_80211_assoc_info * info)2645 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2646 struct ndis_80211_assoc_info *info)
2647 {
2648 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2649 struct ieee80211_channel *channel;
2650 struct ndis_80211_ssid ssid;
2651 struct cfg80211_bss *bss;
2652 s32 signal;
2653 u64 timestamp;
2654 u16 capability;
2655 u32 beacon_period = 0;
2656 __le32 rssi;
2657 u8 ie_buf[34];
2658 int len, ret, ie_len;
2659
2660 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2661 len = sizeof(rssi);
2662 rssi = 0;
2663 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2664 &rssi, &len);
2665 signal = level_to_qual(le32_to_cpu(rssi));
2666
2667 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2668 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2669 level_to_qual(le32_to_cpu(rssi)));
2670
2671 /* Get AP capabilities */
2672 if (info) {
2673 capability = le16_to_cpu(info->resp_ie.capa);
2674 } else {
2675 /* Set atleast ESS/IBSS capability */
2676 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2677 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2678 }
2679
2680 /* Get channel and beacon interval */
2681 channel = get_current_channel(usbdev, &beacon_period);
2682 if (!channel) {
2683 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2684 __func__);
2685 return;
2686 }
2687
2688 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2689 len = sizeof(ssid);
2690 memset(&ssid, 0, sizeof(ssid));
2691 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2692 &ssid, &len);
2693 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2694 "'%.32s'\n", __func__, ret,
2695 le32_to_cpu(ssid.length), ssid.essid);
2696
2697 if (le32_to_cpu(ssid.length) > 32)
2698 ssid.length = cpu_to_le32(32);
2699
2700 ie_buf[0] = WLAN_EID_SSID;
2701 ie_buf[1] = le32_to_cpu(ssid.length);
2702 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2703
2704 ie_len = le32_to_cpu(ssid.length) + 2;
2705
2706 /* no tsf */
2707 timestamp = 0;
2708
2709 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2710 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2711 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2712 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2713 ssid.essid, signal);
2714
2715 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2716 timestamp, capability, beacon_period, ie_buf, ie_len,
2717 signal, GFP_KERNEL);
2718 cfg80211_put_bss(priv->wdev.wiphy, bss);
2719 }
2720
2721 /*
2722 * workers, indication handlers, device poller
2723 */
rndis_wlan_do_link_up_work(struct usbnet * usbdev)2724 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2725 {
2726 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2727 struct ndis_80211_assoc_info *info = NULL;
2728 u8 bssid[ETH_ALEN];
2729 unsigned int resp_ie_len, req_ie_len;
2730 unsigned int offset;
2731 u8 *req_ie, *resp_ie;
2732 int ret;
2733 bool roamed = false;
2734 bool match_bss;
2735
2736 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2737 /* received media connect indication while connected, either
2738 * device reassociated with same AP or roamed to new. */
2739 roamed = true;
2740 }
2741
2742 req_ie_len = 0;
2743 resp_ie_len = 0;
2744 req_ie = NULL;
2745 resp_ie = NULL;
2746
2747 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2748 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2749 if (!info) {
2750 /* No memory? Try resume work later */
2751 set_bit(WORK_LINK_UP, &priv->work_pending);
2752 queue_work(priv->workqueue, &priv->work);
2753 return;
2754 }
2755
2756 /* Get association info IEs from device. */
2757 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2758 if (!ret) {
2759 req_ie_len = le32_to_cpu(info->req_ie_length);
2760 if (req_ie_len > CONTROL_BUFFER_SIZE)
2761 req_ie_len = CONTROL_BUFFER_SIZE;
2762 if (req_ie_len != 0) {
2763 offset = le32_to_cpu(info->offset_req_ies);
2764
2765 if (offset > CONTROL_BUFFER_SIZE)
2766 offset = CONTROL_BUFFER_SIZE;
2767
2768 req_ie = (u8 *)info + offset;
2769
2770 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2771 req_ie_len =
2772 CONTROL_BUFFER_SIZE - offset;
2773 }
2774
2775 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2776 if (resp_ie_len > CONTROL_BUFFER_SIZE)
2777 resp_ie_len = CONTROL_BUFFER_SIZE;
2778 if (resp_ie_len != 0) {
2779 offset = le32_to_cpu(info->offset_resp_ies);
2780
2781 if (offset > CONTROL_BUFFER_SIZE)
2782 offset = CONTROL_BUFFER_SIZE;
2783
2784 resp_ie = (u8 *)info + offset;
2785
2786 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2787 resp_ie_len =
2788 CONTROL_BUFFER_SIZE - offset;
2789 }
2790 } else {
2791 /* Since rndis_wlan_craft_connected_bss() might use info
2792 * later and expects info to contain valid data if
2793 * non-null, free info and set NULL here.
2794 */
2795 kfree(info);
2796 info = NULL;
2797 }
2798 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2799 return;
2800
2801 ret = get_bssid(usbdev, bssid);
2802 if (ret < 0)
2803 memset(bssid, 0, sizeof(bssid));
2804
2805 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2806 bssid, roamed ? " roamed" : "");
2807
2808 /* Internal bss list in device should contain at least the currently
2809 * connected bss and we can get it to cfg80211 with
2810 * rndis_check_bssid_list().
2811 *
2812 * NDIS spec says: "If the device is associated, but the associated
2813 * BSSID is not in its BSSID scan list, then the driver must add an
2814 * entry for the BSSID at the end of the data that it returns in
2815 * response to query of RNDIS_OID_802_11_BSSID_LIST."
2816 *
2817 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2818 */
2819 match_bss = false;
2820 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2821
2822 if (!is_zero_ether_addr(bssid) && !match_bss) {
2823 /* Couldn't get bss from device, we need to manually craft bss
2824 * for cfg80211.
2825 */
2826 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2827 }
2828
2829 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2830 if (!roamed)
2831 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2832 req_ie_len, resp_ie,
2833 resp_ie_len, 0, GFP_KERNEL);
2834 else
2835 cfg80211_roamed(usbdev->net,
2836 get_current_channel(usbdev, NULL),
2837 bssid, req_ie, req_ie_len,
2838 resp_ie, resp_ie_len, GFP_KERNEL);
2839 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2840 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2841
2842 kfree(info);
2843
2844 priv->connected = true;
2845 memcpy(priv->bssid, bssid, ETH_ALEN);
2846
2847 usbnet_resume_rx(usbdev);
2848 netif_carrier_on(usbdev->net);
2849 }
2850
rndis_wlan_do_link_down_work(struct usbnet * usbdev)2851 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2852 {
2853 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2854
2855 if (priv->connected) {
2856 priv->connected = false;
2857 memset(priv->bssid, 0, ETH_ALEN);
2858
2859 deauthenticate(usbdev);
2860
2861 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2862 }
2863
2864 netif_carrier_off(usbdev->net);
2865 }
2866
rndis_wlan_worker(struct work_struct * work)2867 static void rndis_wlan_worker(struct work_struct *work)
2868 {
2869 struct rndis_wlan_private *priv =
2870 container_of(work, struct rndis_wlan_private, work);
2871 struct usbnet *usbdev = priv->usbdev;
2872
2873 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2874 rndis_wlan_do_link_up_work(usbdev);
2875
2876 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2877 rndis_wlan_do_link_down_work(usbdev);
2878
2879 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2880 set_multicast_list(usbdev);
2881 }
2882
rndis_wlan_set_multicast_list(struct net_device * dev)2883 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2884 {
2885 struct usbnet *usbdev = netdev_priv(dev);
2886 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2887
2888 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2889 return;
2890
2891 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2892 queue_work(priv->workqueue, &priv->work);
2893 }
2894
rndis_wlan_auth_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2895 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2896 struct ndis_80211_status_indication *indication,
2897 int len)
2898 {
2899 u8 *buf;
2900 const char *type;
2901 int flags, buflen, key_id;
2902 bool pairwise_error, group_error;
2903 struct ndis_80211_auth_request *auth_req;
2904 enum nl80211_key_type key_type;
2905
2906 /* must have at least one array entry */
2907 if (len < offsetof(struct ndis_80211_status_indication, u) +
2908 sizeof(struct ndis_80211_auth_request)) {
2909 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2910 len);
2911 return;
2912 }
2913
2914 buf = (void *)&indication->u.auth_request[0];
2915 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2916
2917 while (buflen >= sizeof(*auth_req)) {
2918 auth_req = (void *)buf;
2919 type = "unknown";
2920 flags = le32_to_cpu(auth_req->flags);
2921 pairwise_error = false;
2922 group_error = false;
2923
2924 if (flags & 0x1)
2925 type = "reauth request";
2926 if (flags & 0x2)
2927 type = "key update request";
2928 if (flags & 0x6) {
2929 pairwise_error = true;
2930 type = "pairwise_error";
2931 }
2932 if (flags & 0xe) {
2933 group_error = true;
2934 type = "group_error";
2935 }
2936
2937 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2938 type, le32_to_cpu(auth_req->flags));
2939
2940 if (pairwise_error) {
2941 key_type = NL80211_KEYTYPE_PAIRWISE;
2942 key_id = -1;
2943
2944 cfg80211_michael_mic_failure(usbdev->net,
2945 auth_req->bssid,
2946 key_type, key_id, NULL,
2947 GFP_KERNEL);
2948 }
2949
2950 if (group_error) {
2951 key_type = NL80211_KEYTYPE_GROUP;
2952 key_id = -1;
2953
2954 cfg80211_michael_mic_failure(usbdev->net,
2955 auth_req->bssid,
2956 key_type, key_id, NULL,
2957 GFP_KERNEL);
2958 }
2959
2960 buflen -= le32_to_cpu(auth_req->length);
2961 buf += le32_to_cpu(auth_req->length);
2962 }
2963 }
2964
rndis_wlan_pmkid_cand_list_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2965 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2966 struct ndis_80211_status_indication *indication,
2967 int len)
2968 {
2969 struct ndis_80211_pmkid_cand_list *cand_list;
2970 int list_len, expected_len, i;
2971
2972 if (len < offsetof(struct ndis_80211_status_indication, u) +
2973 sizeof(struct ndis_80211_pmkid_cand_list)) {
2974 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2975 len);
2976 return;
2977 }
2978
2979 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2980 sizeof(struct ndis_80211_pmkid_candidate);
2981 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2982 offsetof(struct ndis_80211_status_indication, u);
2983
2984 if (len < expected_len) {
2985 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2986 len, expected_len);
2987 return;
2988 }
2989
2990 cand_list = &indication->u.cand_list;
2991
2992 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2993 le32_to_cpu(cand_list->version),
2994 le32_to_cpu(cand_list->num_candidates));
2995
2996 if (le32_to_cpu(cand_list->version) != 1)
2997 return;
2998
2999 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3000 struct ndis_80211_pmkid_candidate *cand =
3001 &cand_list->candidate_list[i];
3002 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3003
3004 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3005 i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3006
3007 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3008 preauth, GFP_ATOMIC);
3009 }
3010 }
3011
rndis_wlan_media_specific_indication(struct usbnet * usbdev,struct rndis_indicate * msg,int buflen)3012 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3013 struct rndis_indicate *msg, int buflen)
3014 {
3015 struct ndis_80211_status_indication *indication;
3016 unsigned int len, offset;
3017
3018 offset = offsetof(struct rndis_indicate, status) +
3019 le32_to_cpu(msg->offset);
3020 len = le32_to_cpu(msg->length);
3021
3022 if (len < 8) {
3023 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3024 len);
3025 return;
3026 }
3027
3028 if (len > buflen || offset > buflen || offset + len > buflen) {
3029 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3030 offset + len, buflen);
3031 return;
3032 }
3033
3034 indication = (void *)((u8 *)msg + offset);
3035
3036 switch (le32_to_cpu(indication->status_type)) {
3037 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3038 netdev_info(usbdev->net, "radio state indication: %i\n",
3039 le32_to_cpu(indication->u.radio_status));
3040 return;
3041
3042 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3043 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3044 le32_to_cpu(indication->u.media_stream_mode));
3045 return;
3046
3047 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3048 rndis_wlan_auth_indication(usbdev, indication, len);
3049 return;
3050
3051 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3052 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3053 return;
3054
3055 default:
3056 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3057 le32_to_cpu(indication->status_type));
3058 }
3059 }
3060
rndis_wlan_indication(struct usbnet * usbdev,void * ind,int buflen)3061 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3062 {
3063 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3064 struct rndis_indicate *msg = ind;
3065
3066 switch (le32_to_cpu(msg->status)) {
3067 case RNDIS_STATUS_MEDIA_CONNECT:
3068 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3069 /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3070 * "media connect" indications which confuses driver
3071 * and userspace to think that device is
3072 * roaming/reassociating when it isn't.
3073 */
3074 netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3075 return;
3076 }
3077
3078 usbnet_pause_rx(usbdev);
3079
3080 netdev_info(usbdev->net, "media connect\n");
3081
3082 /* queue work to avoid recursive calls into rndis_command */
3083 set_bit(WORK_LINK_UP, &priv->work_pending);
3084 queue_work(priv->workqueue, &priv->work);
3085 break;
3086
3087 case RNDIS_STATUS_MEDIA_DISCONNECT:
3088 netdev_info(usbdev->net, "media disconnect\n");
3089
3090 /* queue work to avoid recursive calls into rndis_command */
3091 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3092 queue_work(priv->workqueue, &priv->work);
3093 break;
3094
3095 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3096 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3097 break;
3098
3099 default:
3100 netdev_info(usbdev->net, "indication: 0x%08x\n",
3101 le32_to_cpu(msg->status));
3102 break;
3103 }
3104 }
3105
rndis_wlan_get_caps(struct usbnet * usbdev,struct wiphy * wiphy)3106 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3107 {
3108 struct {
3109 __le32 num_items;
3110 __le32 items[8];
3111 } networks_supported;
3112 struct ndis_80211_capability *caps;
3113 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3114 int len, retval, i, n;
3115 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3116
3117 /* determine supported modes */
3118 len = sizeof(networks_supported);
3119 retval = rndis_query_oid(usbdev,
3120 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3121 &networks_supported, &len);
3122 if (retval >= 0) {
3123 n = le32_to_cpu(networks_supported.num_items);
3124 if (n > 8)
3125 n = 8;
3126 for (i = 0; i < n; i++) {
3127 switch (le32_to_cpu(networks_supported.items[i])) {
3128 case NDIS_80211_TYPE_FREQ_HOP:
3129 case NDIS_80211_TYPE_DIRECT_SEQ:
3130 priv->caps |= CAP_MODE_80211B;
3131 break;
3132 case NDIS_80211_TYPE_OFDM_A:
3133 priv->caps |= CAP_MODE_80211A;
3134 break;
3135 case NDIS_80211_TYPE_OFDM_G:
3136 priv->caps |= CAP_MODE_80211G;
3137 break;
3138 }
3139 }
3140 }
3141
3142 /* get device 802.11 capabilities, number of PMKIDs */
3143 caps = (struct ndis_80211_capability *)caps_buf;
3144 len = sizeof(caps_buf);
3145 retval = rndis_query_oid(usbdev,
3146 RNDIS_OID_802_11_CAPABILITY,
3147 caps, &len);
3148 if (retval >= 0) {
3149 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3150 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3151 le32_to_cpu(caps->length),
3152 le32_to_cpu(caps->version),
3153 le32_to_cpu(caps->num_pmkids),
3154 le32_to_cpu(caps->num_auth_encr_pair));
3155 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3156 } else
3157 wiphy->max_num_pmkids = 0;
3158
3159 return retval;
3160 }
3161
rndis_do_cqm(struct usbnet * usbdev,s32 rssi)3162 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3163 {
3164 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3165 enum nl80211_cqm_rssi_threshold_event event;
3166 int thold, hyst, last_event;
3167
3168 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3169 return;
3170 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3171 return;
3172
3173 last_event = priv->last_cqm_event_rssi;
3174 thold = priv->cqm_rssi_thold;
3175 hyst = priv->cqm_rssi_hyst;
3176
3177 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3178 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3179 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3180 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3181 else
3182 return;
3183
3184 priv->last_cqm_event_rssi = rssi;
3185 cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3186 }
3187
3188 #define DEVICE_POLLER_JIFFIES (HZ)
rndis_device_poller(struct work_struct * work)3189 static void rndis_device_poller(struct work_struct *work)
3190 {
3191 struct rndis_wlan_private *priv =
3192 container_of(work, struct rndis_wlan_private,
3193 dev_poller_work.work);
3194 struct usbnet *usbdev = priv->usbdev;
3195 __le32 rssi, tmp;
3196 int len, ret, j;
3197 int update_jiffies = DEVICE_POLLER_JIFFIES;
3198 void *buf;
3199
3200 /* Only check/do workaround when connected. Calling is_associated()
3201 * also polls device with rndis_command() and catches for media link
3202 * indications.
3203 */
3204 if (!is_associated(usbdev)) {
3205 /* Workaround bad scanning in BCM4320a devices with active
3206 * background scanning when not associated.
3207 */
3208 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3209 !priv->scan_request) {
3210 /* Get previous scan results */
3211 rndis_check_bssid_list(usbdev, NULL, NULL);
3212
3213 /* Initiate new scan */
3214 rndis_start_bssid_list_scan(usbdev);
3215 }
3216
3217 goto end;
3218 }
3219
3220 len = sizeof(rssi);
3221 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3222 &rssi, &len);
3223 if (ret == 0) {
3224 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3225 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3226 }
3227
3228 netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3229 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3230
3231 /* Workaround transfer stalls on poor quality links.
3232 * TODO: find right way to fix these stalls (as stalls do not happen
3233 * with ndiswrapper/windows driver). */
3234 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3235 /* Decrease stats worker interval to catch stalls.
3236 * faster. Faster than 400-500ms causes packet loss,
3237 * Slower doesn't catch stalls fast enough.
3238 */
3239 j = msecs_to_jiffies(priv->param_workaround_interval);
3240 if (j > DEVICE_POLLER_JIFFIES)
3241 j = DEVICE_POLLER_JIFFIES;
3242 else if (j <= 0)
3243 j = 1;
3244 update_jiffies = j;
3245
3246 /* Send scan OID. Use of both OIDs is required to get device
3247 * working.
3248 */
3249 tmp = cpu_to_le32(1);
3250 rndis_set_oid(usbdev,
3251 RNDIS_OID_802_11_BSSID_LIST_SCAN,
3252 &tmp, sizeof(tmp));
3253
3254 len = CONTROL_BUFFER_SIZE;
3255 buf = kmalloc(len, GFP_KERNEL);
3256 if (!buf)
3257 goto end;
3258
3259 rndis_query_oid(usbdev,
3260 RNDIS_OID_802_11_BSSID_LIST,
3261 buf, &len);
3262 kfree(buf);
3263 }
3264
3265 end:
3266 if (update_jiffies >= HZ)
3267 update_jiffies = round_jiffies_relative(update_jiffies);
3268 else {
3269 j = round_jiffies_relative(update_jiffies);
3270 if (abs(j - update_jiffies) <= 10)
3271 update_jiffies = j;
3272 }
3273
3274 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3275 update_jiffies);
3276 }
3277
3278 /*
3279 * driver/device initialization
3280 */
rndis_copy_module_params(struct usbnet * usbdev,int device_type)3281 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3282 {
3283 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3284
3285 priv->device_type = device_type;
3286
3287 priv->param_country[0] = modparam_country[0];
3288 priv->param_country[1] = modparam_country[1];
3289 priv->param_country[2] = 0;
3290 priv->param_frameburst = modparam_frameburst;
3291 priv->param_afterburner = modparam_afterburner;
3292 priv->param_power_save = modparam_power_save;
3293 priv->param_power_output = modparam_power_output;
3294 priv->param_roamtrigger = modparam_roamtrigger;
3295 priv->param_roamdelta = modparam_roamdelta;
3296
3297 priv->param_country[0] = toupper(priv->param_country[0]);
3298 priv->param_country[1] = toupper(priv->param_country[1]);
3299 /* doesn't support EU as country code, use FI instead */
3300 if (!strcmp(priv->param_country, "EU"))
3301 strcpy(priv->param_country, "FI");
3302
3303 if (priv->param_power_save < 0)
3304 priv->param_power_save = 0;
3305 else if (priv->param_power_save > 2)
3306 priv->param_power_save = 2;
3307
3308 if (priv->param_power_output < 0)
3309 priv->param_power_output = 0;
3310 else if (priv->param_power_output > 3)
3311 priv->param_power_output = 3;
3312
3313 if (priv->param_roamtrigger < -80)
3314 priv->param_roamtrigger = -80;
3315 else if (priv->param_roamtrigger > -60)
3316 priv->param_roamtrigger = -60;
3317
3318 if (priv->param_roamdelta < 0)
3319 priv->param_roamdelta = 0;
3320 else if (priv->param_roamdelta > 2)
3321 priv->param_roamdelta = 2;
3322
3323 if (modparam_workaround_interval < 0)
3324 priv->param_workaround_interval = 500;
3325 else
3326 priv->param_workaround_interval = modparam_workaround_interval;
3327 }
3328
unknown_early_init(struct usbnet * usbdev)3329 static int unknown_early_init(struct usbnet *usbdev)
3330 {
3331 /* copy module parameters for unknown so that iwconfig reports txpower
3332 * and workaround parameter is copied to private structure correctly.
3333 */
3334 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3335
3336 /* This is unknown device, so do not try set configuration parameters.
3337 */
3338
3339 return 0;
3340 }
3341
bcm4320a_early_init(struct usbnet * usbdev)3342 static int bcm4320a_early_init(struct usbnet *usbdev)
3343 {
3344 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3345 * and workaround parameter is copied to private structure correctly.
3346 */
3347 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3348
3349 /* bcm4320a doesn't handle configuration parameters well. Try
3350 * set any and you get partially zeroed mac and broken device.
3351 */
3352
3353 return 0;
3354 }
3355
bcm4320b_early_init(struct usbnet * usbdev)3356 static int bcm4320b_early_init(struct usbnet *usbdev)
3357 {
3358 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3359 char buf[8];
3360
3361 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3362
3363 /* Early initialization settings, setting these won't have effect
3364 * if called after generic_rndis_bind().
3365 */
3366
3367 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3368 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3369 priv->param_frameburst ? "1" : "0");
3370 rndis_set_config_parameter_str(usbdev, "Afterburner",
3371 priv->param_afterburner ? "1" : "0");
3372 sprintf(buf, "%d", priv->param_power_save);
3373 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3374 sprintf(buf, "%d", priv->param_power_output);
3375 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3376 sprintf(buf, "%d", priv->param_roamtrigger);
3377 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3378 sprintf(buf, "%d", priv->param_roamdelta);
3379 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3380
3381 return 0;
3382 }
3383
3384 /* same as rndis_netdev_ops but with local multicast handler */
3385 static const struct net_device_ops rndis_wlan_netdev_ops = {
3386 .ndo_open = usbnet_open,
3387 .ndo_stop = usbnet_stop,
3388 .ndo_start_xmit = usbnet_start_xmit,
3389 .ndo_tx_timeout = usbnet_tx_timeout,
3390 .ndo_set_mac_address = eth_mac_addr,
3391 .ndo_validate_addr = eth_validate_addr,
3392 .ndo_set_rx_mode = rndis_wlan_set_multicast_list,
3393 };
3394
rndis_wlan_bind(struct usbnet * usbdev,struct usb_interface * intf)3395 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3396 {
3397 struct wiphy *wiphy;
3398 struct rndis_wlan_private *priv;
3399 int retval, len;
3400 __le32 tmp;
3401
3402 /* allocate wiphy and rndis private data
3403 * NOTE: We only support a single virtual interface, so wiphy
3404 * and wireless_dev are somewhat synonymous for this device.
3405 */
3406 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3407 if (!wiphy)
3408 return -ENOMEM;
3409
3410 priv = wiphy_priv(wiphy);
3411 usbdev->net->ieee80211_ptr = &priv->wdev;
3412 priv->wdev.wiphy = wiphy;
3413 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3414
3415 /* These have to be initialized before calling generic_rndis_bind().
3416 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3417 */
3418 usbdev->driver_priv = priv;
3419 priv->usbdev = usbdev;
3420
3421 mutex_init(&priv->command_lock);
3422
3423 /* because rndis_command() sleeps we need to use workqueue */
3424 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3425 INIT_WORK(&priv->work, rndis_wlan_worker);
3426 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3427 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3428
3429 /* try bind rndis_host */
3430 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3431 if (retval < 0)
3432 goto fail;
3433
3434 /* generic_rndis_bind set packet filter to multicast_all+
3435 * promisc mode which doesn't work well for our devices (device
3436 * picks up rssi to closest station instead of to access point).
3437 *
3438 * rndis_host wants to avoid all OID as much as possible
3439 * so do promisc/multicast handling in rndis_wlan.
3440 */
3441 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3442
3443 tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3444 retval = rndis_set_oid(usbdev,
3445 RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3446 &tmp, sizeof(tmp));
3447
3448 len = sizeof(tmp);
3449 retval = rndis_query_oid(usbdev,
3450 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3451 &tmp, &len);
3452 priv->multicast_size = le32_to_cpu(tmp);
3453 if (retval < 0 || priv->multicast_size < 0)
3454 priv->multicast_size = 0;
3455 if (priv->multicast_size > 0)
3456 usbdev->net->flags |= IFF_MULTICAST;
3457 else
3458 usbdev->net->flags &= ~IFF_MULTICAST;
3459
3460 /* fill-out wiphy structure and register w/ cfg80211 */
3461 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3462 wiphy->privid = rndis_wiphy_privid;
3463 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3464 | BIT(NL80211_IFTYPE_ADHOC);
3465 wiphy->max_scan_ssids = 1;
3466
3467 /* TODO: fill-out band/encr information based on priv->caps */
3468 rndis_wlan_get_caps(usbdev, wiphy);
3469
3470 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3471 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3472 priv->band.channels = priv->channels;
3473 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3474 priv->band.bitrates = priv->rates;
3475 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3476 wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3477 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3478
3479 memcpy(priv->cipher_suites, rndis_cipher_suites,
3480 sizeof(rndis_cipher_suites));
3481 wiphy->cipher_suites = priv->cipher_suites;
3482 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3483
3484 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3485
3486 if (wiphy_register(wiphy)) {
3487 retval = -ENODEV;
3488 goto fail;
3489 }
3490
3491 set_default_iw_params(usbdev);
3492
3493 priv->power_mode = -1;
3494
3495 /* set default rts/frag */
3496 rndis_set_wiphy_params(wiphy,
3497 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3498
3499 /* turn radio off on init */
3500 priv->radio_on = false;
3501 disassociate(usbdev, false);
3502 netif_carrier_off(usbdev->net);
3503
3504 return 0;
3505
3506 fail:
3507 cancel_delayed_work_sync(&priv->dev_poller_work);
3508 cancel_delayed_work_sync(&priv->scan_work);
3509 cancel_work_sync(&priv->work);
3510 flush_workqueue(priv->workqueue);
3511 destroy_workqueue(priv->workqueue);
3512
3513 wiphy_free(wiphy);
3514 return retval;
3515 }
3516
rndis_wlan_unbind(struct usbnet * usbdev,struct usb_interface * intf)3517 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3518 {
3519 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3520
3521 /* turn radio off */
3522 disassociate(usbdev, false);
3523
3524 cancel_delayed_work_sync(&priv->dev_poller_work);
3525 cancel_delayed_work_sync(&priv->scan_work);
3526 cancel_work_sync(&priv->work);
3527 flush_workqueue(priv->workqueue);
3528 destroy_workqueue(priv->workqueue);
3529
3530 rndis_unbind(usbdev, intf);
3531
3532 wiphy_unregister(priv->wdev.wiphy);
3533 wiphy_free(priv->wdev.wiphy);
3534 }
3535
rndis_wlan_reset(struct usbnet * usbdev)3536 static int rndis_wlan_reset(struct usbnet *usbdev)
3537 {
3538 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3539 int retval;
3540
3541 netdev_dbg(usbdev->net, "%s()\n", __func__);
3542
3543 retval = rndis_reset(usbdev);
3544 if (retval)
3545 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3546
3547 /* rndis_reset cleared multicast list, so restore here.
3548 (set_multicast_list() also turns on current packet filter) */
3549 set_multicast_list(usbdev);
3550
3551 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3552 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3553
3554 return deauthenticate(usbdev);
3555 }
3556
rndis_wlan_stop(struct usbnet * usbdev)3557 static int rndis_wlan_stop(struct usbnet *usbdev)
3558 {
3559 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3560 int retval;
3561 __le32 filter;
3562
3563 netdev_dbg(usbdev->net, "%s()\n", __func__);
3564
3565 retval = disassociate(usbdev, false);
3566
3567 priv->work_pending = 0;
3568 cancel_delayed_work_sync(&priv->dev_poller_work);
3569 cancel_delayed_work_sync(&priv->scan_work);
3570 cancel_work_sync(&priv->work);
3571 flush_workqueue(priv->workqueue);
3572
3573 if (priv->scan_request) {
3574 cfg80211_scan_done(priv->scan_request, true);
3575 priv->scan_request = NULL;
3576 }
3577
3578 /* Set current packet filter zero to block receiving data packets from
3579 device. */
3580 filter = 0;
3581 rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3582 sizeof(filter));
3583
3584 return retval;
3585 }
3586
3587 static const struct driver_info bcm4320b_info = {
3588 .description = "Wireless RNDIS device, BCM4320b based",
3589 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3590 FLAG_AVOID_UNLINK_URBS,
3591 .bind = rndis_wlan_bind,
3592 .unbind = rndis_wlan_unbind,
3593 .status = rndis_status,
3594 .rx_fixup = rndis_rx_fixup,
3595 .tx_fixup = rndis_tx_fixup,
3596 .reset = rndis_wlan_reset,
3597 .stop = rndis_wlan_stop,
3598 .early_init = bcm4320b_early_init,
3599 .indication = rndis_wlan_indication,
3600 };
3601
3602 static const struct driver_info bcm4320a_info = {
3603 .description = "Wireless RNDIS device, BCM4320a based",
3604 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3605 FLAG_AVOID_UNLINK_URBS,
3606 .bind = rndis_wlan_bind,
3607 .unbind = rndis_wlan_unbind,
3608 .status = rndis_status,
3609 .rx_fixup = rndis_rx_fixup,
3610 .tx_fixup = rndis_tx_fixup,
3611 .reset = rndis_wlan_reset,
3612 .stop = rndis_wlan_stop,
3613 .early_init = bcm4320a_early_init,
3614 .indication = rndis_wlan_indication,
3615 };
3616
3617 static const struct driver_info rndis_wlan_info = {
3618 .description = "Wireless RNDIS device",
3619 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3620 FLAG_AVOID_UNLINK_URBS,
3621 .bind = rndis_wlan_bind,
3622 .unbind = rndis_wlan_unbind,
3623 .status = rndis_status,
3624 .rx_fixup = rndis_rx_fixup,
3625 .tx_fixup = rndis_tx_fixup,
3626 .reset = rndis_wlan_reset,
3627 .stop = rndis_wlan_stop,
3628 .early_init = unknown_early_init,
3629 .indication = rndis_wlan_indication,
3630 };
3631
3632 /*-------------------------------------------------------------------------*/
3633
3634 static const struct usb_device_id products [] = {
3635 #define RNDIS_MASTER_INTERFACE \
3636 .bInterfaceClass = USB_CLASS_COMM, \
3637 .bInterfaceSubClass = 2 /* ACM */, \
3638 .bInterfaceProtocol = 0x0ff
3639
3640 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3641 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3642 */
3643 {
3644 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3645 | USB_DEVICE_ID_MATCH_DEVICE,
3646 .idVendor = 0x0411,
3647 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3648 RNDIS_MASTER_INTERFACE,
3649 .driver_info = (unsigned long) &bcm4320b_info,
3650 }, {
3651 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3652 | USB_DEVICE_ID_MATCH_DEVICE,
3653 .idVendor = 0x0baf,
3654 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3655 RNDIS_MASTER_INTERFACE,
3656 .driver_info = (unsigned long) &bcm4320b_info,
3657 }, {
3658 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3659 | USB_DEVICE_ID_MATCH_DEVICE,
3660 .idVendor = 0x050d,
3661 .idProduct = 0x011b, /* Belkin F5D7051 */
3662 RNDIS_MASTER_INTERFACE,
3663 .driver_info = (unsigned long) &bcm4320b_info,
3664 }, {
3665 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3666 | USB_DEVICE_ID_MATCH_DEVICE,
3667 .idVendor = 0x1799, /* Belkin has two vendor ids */
3668 .idProduct = 0x011b, /* Belkin F5D7051 */
3669 RNDIS_MASTER_INTERFACE,
3670 .driver_info = (unsigned long) &bcm4320b_info,
3671 }, {
3672 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3673 | USB_DEVICE_ID_MATCH_DEVICE,
3674 .idVendor = 0x13b1,
3675 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3676 RNDIS_MASTER_INTERFACE,
3677 .driver_info = (unsigned long) &bcm4320b_info,
3678 }, {
3679 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3680 | USB_DEVICE_ID_MATCH_DEVICE,
3681 .idVendor = 0x13b1,
3682 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3683 RNDIS_MASTER_INTERFACE,
3684 .driver_info = (unsigned long) &bcm4320b_info,
3685 }, {
3686 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3687 | USB_DEVICE_ID_MATCH_DEVICE,
3688 .idVendor = 0x0b05,
3689 .idProduct = 0x1717, /* Asus WL169gE */
3690 RNDIS_MASTER_INTERFACE,
3691 .driver_info = (unsigned long) &bcm4320b_info,
3692 }, {
3693 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3694 | USB_DEVICE_ID_MATCH_DEVICE,
3695 .idVendor = 0x0a5c,
3696 .idProduct = 0xd11b, /* Eminent EM4045 */
3697 RNDIS_MASTER_INTERFACE,
3698 .driver_info = (unsigned long) &bcm4320b_info,
3699 }, {
3700 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3701 | USB_DEVICE_ID_MATCH_DEVICE,
3702 .idVendor = 0x1690,
3703 .idProduct = 0x0715, /* BT Voyager 1055 */
3704 RNDIS_MASTER_INTERFACE,
3705 .driver_info = (unsigned long) &bcm4320b_info,
3706 },
3707 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3708 * parameters available, hardware probably contain older firmware version with
3709 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3710 */
3711 {
3712 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3713 | USB_DEVICE_ID_MATCH_DEVICE,
3714 .idVendor = 0x13b1,
3715 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3716 RNDIS_MASTER_INTERFACE,
3717 .driver_info = (unsigned long) &bcm4320a_info,
3718 }, {
3719 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3720 | USB_DEVICE_ID_MATCH_DEVICE,
3721 .idVendor = 0x0baf,
3722 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3723 RNDIS_MASTER_INTERFACE,
3724 .driver_info = (unsigned long) &bcm4320a_info,
3725 }, {
3726 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3727 | USB_DEVICE_ID_MATCH_DEVICE,
3728 .idVendor = 0x0411,
3729 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3730 RNDIS_MASTER_INTERFACE,
3731 .driver_info = (unsigned long) &bcm4320a_info,
3732 },
3733 /* Generic Wireless RNDIS devices that we don't have exact
3734 * idVendor/idProduct/chip yet.
3735 */
3736 {
3737 /* RNDIS is MSFT's un-official variant of CDC ACM */
3738 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3739 .driver_info = (unsigned long) &rndis_wlan_info,
3740 }, {
3741 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3742 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3743 .driver_info = (unsigned long) &rndis_wlan_info,
3744 },
3745 { }, // END
3746 };
3747 MODULE_DEVICE_TABLE(usb, products);
3748
3749 static struct usb_driver rndis_wlan_driver = {
3750 .name = "rndis_wlan",
3751 .id_table = products,
3752 .probe = usbnet_probe,
3753 .disconnect = usbnet_disconnect,
3754 .suspend = usbnet_suspend,
3755 .resume = usbnet_resume,
3756 .disable_hub_initiated_lpm = 1,
3757 };
3758
3759 module_usb_driver(rndis_wlan_driver);
3760
3761 MODULE_AUTHOR("Bjorge Dijkstra");
3762 MODULE_AUTHOR("Jussi Kivilinna");
3763 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3764 MODULE_LICENSE("GPL");
3765
3766