1 /*
2 * Driver for RNDIS based wireless USB devices.
3 *
4 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
5 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, see <http://www.gnu.org/licenses/>.
19 *
20 * Portions of this file are based on NDISwrapper project,
21 * Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
22 * http://ndiswrapper.sourceforge.net/
23 */
24
25 // #define DEBUG // error path messages, extra info
26 // #define VERBOSE // more; success messages
27
28 #include <linux/module.h>
29 #include <linux/netdevice.h>
30 #include <linux/etherdevice.h>
31 #include <linux/ethtool.h>
32 #include <linux/workqueue.h>
33 #include <linux/mutex.h>
34 #include <linux/mii.h>
35 #include <linux/usb.h>
36 #include <linux/usb/cdc.h>
37 #include <linux/ieee80211.h>
38 #include <linux/if_arp.h>
39 #include <linux/ctype.h>
40 #include <linux/spinlock.h>
41 #include <linux/slab.h>
42 #include <net/cfg80211.h>
43 #include <linux/usb/usbnet.h>
44 #include <linux/usb/rndis_host.h>
45
46
47 /* NOTE: All these are settings for Broadcom chipset */
48 static char modparam_country[4] = "EU";
49 module_param_string(country, modparam_country, 4, 0444);
50 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
51
52 static int modparam_frameburst = 1;
53 module_param_named(frameburst, modparam_frameburst, int, 0444);
54 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
55
56 static int modparam_afterburner = 0;
57 module_param_named(afterburner, modparam_afterburner, int, 0444);
58 MODULE_PARM_DESC(afterburner,
59 "enable afterburner aka '125 High Speed Mode' (default: off)");
60
61 static int modparam_power_save = 0;
62 module_param_named(power_save, modparam_power_save, int, 0444);
63 MODULE_PARM_DESC(power_save,
64 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
65
66 static int modparam_power_output = 3;
67 module_param_named(power_output, modparam_power_output, int, 0444);
68 MODULE_PARM_DESC(power_output,
69 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
70
71 static int modparam_roamtrigger = -70;
72 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
73 MODULE_PARM_DESC(roamtrigger,
74 "set roaming dBm trigger: -80=optimize for distance, "
75 "-60=bandwidth (default: -70)");
76
77 static int modparam_roamdelta = 1;
78 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
79 MODULE_PARM_DESC(roamdelta,
80 "set roaming tendency: 0=aggressive, 1=moderate, "
81 "2=conservative (default: moderate)");
82
83 static int modparam_workaround_interval;
84 module_param_named(workaround_interval, modparam_workaround_interval,
85 int, 0444);
86 MODULE_PARM_DESC(workaround_interval,
87 "set stall workaround interval in msecs (0=disabled) (default: 0)");
88
89 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
90 #define WL_NOISE -96 /* typical noise level in dBm */
91 #define WL_SIGMAX -32 /* typical maximum signal level in dBm */
92
93
94 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
95 * based on wireless rndis) has default txpower of 13dBm.
96 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
97 * 100% : 20 mW ~ 13dBm
98 * 75% : 15 mW ~ 12dBm
99 * 50% : 10 mW ~ 10dBm
100 * 25% : 5 mW ~ 7dBm
101 */
102 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
103 #define BCM4320_DEFAULT_TXPOWER_DBM_75 12
104 #define BCM4320_DEFAULT_TXPOWER_DBM_50 10
105 #define BCM4320_DEFAULT_TXPOWER_DBM_25 7
106
107 /* Known device types */
108 #define RNDIS_UNKNOWN 0
109 #define RNDIS_BCM4320A 1
110 #define RNDIS_BCM4320B 2
111
112
113 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
114 * slightly modified for datatype endianess, etc
115 */
116 #define NDIS_802_11_LENGTH_SSID 32
117 #define NDIS_802_11_LENGTH_RATES 8
118 #define NDIS_802_11_LENGTH_RATES_EX 16
119
120 enum ndis_80211_net_type {
121 NDIS_80211_TYPE_FREQ_HOP,
122 NDIS_80211_TYPE_DIRECT_SEQ,
123 NDIS_80211_TYPE_OFDM_A,
124 NDIS_80211_TYPE_OFDM_G
125 };
126
127 enum ndis_80211_net_infra {
128 NDIS_80211_INFRA_ADHOC,
129 NDIS_80211_INFRA_INFRA,
130 NDIS_80211_INFRA_AUTO_UNKNOWN
131 };
132
133 enum ndis_80211_auth_mode {
134 NDIS_80211_AUTH_OPEN,
135 NDIS_80211_AUTH_SHARED,
136 NDIS_80211_AUTH_AUTO_SWITCH,
137 NDIS_80211_AUTH_WPA,
138 NDIS_80211_AUTH_WPA_PSK,
139 NDIS_80211_AUTH_WPA_NONE,
140 NDIS_80211_AUTH_WPA2,
141 NDIS_80211_AUTH_WPA2_PSK
142 };
143
144 enum ndis_80211_encr_status {
145 NDIS_80211_ENCR_WEP_ENABLED,
146 NDIS_80211_ENCR_DISABLED,
147 NDIS_80211_ENCR_WEP_KEY_ABSENT,
148 NDIS_80211_ENCR_NOT_SUPPORTED,
149 NDIS_80211_ENCR_TKIP_ENABLED,
150 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
151 NDIS_80211_ENCR_CCMP_ENABLED,
152 NDIS_80211_ENCR_CCMP_KEY_ABSENT
153 };
154
155 enum ndis_80211_priv_filter {
156 NDIS_80211_PRIV_ACCEPT_ALL,
157 NDIS_80211_PRIV_8021X_WEP
158 };
159
160 enum ndis_80211_status_type {
161 NDIS_80211_STATUSTYPE_AUTHENTICATION,
162 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
163 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
164 NDIS_80211_STATUSTYPE_RADIOSTATE,
165 };
166
167 enum ndis_80211_media_stream_mode {
168 NDIS_80211_MEDIA_STREAM_OFF,
169 NDIS_80211_MEDIA_STREAM_ON
170 };
171
172 enum ndis_80211_radio_status {
173 NDIS_80211_RADIO_STATUS_ON,
174 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
175 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
176 };
177
178 enum ndis_80211_addkey_bits {
179 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
180 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
181 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
182 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
183 };
184
185 enum ndis_80211_addwep_bits {
186 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
187 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
188 };
189
190 enum ndis_80211_power_mode {
191 NDIS_80211_POWER_MODE_CAM,
192 NDIS_80211_POWER_MODE_MAX_PSP,
193 NDIS_80211_POWER_MODE_FAST_PSP,
194 };
195
196 enum ndis_80211_pmkid_cand_list_flag_bits {
197 NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
198 };
199
200 struct ndis_80211_auth_request {
201 __le32 length;
202 u8 bssid[6];
203 u8 padding[2];
204 __le32 flags;
205 } __packed;
206
207 struct ndis_80211_pmkid_candidate {
208 u8 bssid[6];
209 u8 padding[2];
210 __le32 flags;
211 } __packed;
212
213 struct ndis_80211_pmkid_cand_list {
214 __le32 version;
215 __le32 num_candidates;
216 struct ndis_80211_pmkid_candidate candidate_list[0];
217 } __packed;
218
219 struct ndis_80211_status_indication {
220 __le32 status_type;
221 union {
222 __le32 media_stream_mode;
223 __le32 radio_status;
224 struct ndis_80211_auth_request auth_request[0];
225 struct ndis_80211_pmkid_cand_list cand_list;
226 } u;
227 } __packed;
228
229 struct ndis_80211_ssid {
230 __le32 length;
231 u8 essid[NDIS_802_11_LENGTH_SSID];
232 } __packed;
233
234 struct ndis_80211_conf_freq_hop {
235 __le32 length;
236 __le32 hop_pattern;
237 __le32 hop_set;
238 __le32 dwell_time;
239 } __packed;
240
241 struct ndis_80211_conf {
242 __le32 length;
243 __le32 beacon_period;
244 __le32 atim_window;
245 __le32 ds_config;
246 struct ndis_80211_conf_freq_hop fh_config;
247 } __packed;
248
249 struct ndis_80211_bssid_ex {
250 __le32 length;
251 u8 mac[6];
252 u8 padding[2];
253 struct ndis_80211_ssid ssid;
254 __le32 privacy;
255 __le32 rssi;
256 __le32 net_type;
257 struct ndis_80211_conf config;
258 __le32 net_infra;
259 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
260 __le32 ie_length;
261 u8 ies[0];
262 } __packed;
263
264 struct ndis_80211_bssid_list_ex {
265 __le32 num_items;
266 struct ndis_80211_bssid_ex bssid[0];
267 } __packed;
268
269 struct ndis_80211_fixed_ies {
270 u8 timestamp[8];
271 __le16 beacon_interval;
272 __le16 capabilities;
273 } __packed;
274
275 struct ndis_80211_wep_key {
276 __le32 size;
277 __le32 index;
278 __le32 length;
279 u8 material[32];
280 } __packed;
281
282 struct ndis_80211_key {
283 __le32 size;
284 __le32 index;
285 __le32 length;
286 u8 bssid[6];
287 u8 padding[6];
288 u8 rsc[8];
289 u8 material[32];
290 } __packed;
291
292 struct ndis_80211_remove_key {
293 __le32 size;
294 __le32 index;
295 u8 bssid[6];
296 u8 padding[2];
297 } __packed;
298
299 struct ndis_config_param {
300 __le32 name_offs;
301 __le32 name_length;
302 __le32 type;
303 __le32 value_offs;
304 __le32 value_length;
305 } __packed;
306
307 struct ndis_80211_assoc_info {
308 __le32 length;
309 __le16 req_ies;
310 struct req_ie {
311 __le16 capa;
312 __le16 listen_interval;
313 u8 cur_ap_address[6];
314 } req_ie;
315 __le32 req_ie_length;
316 __le32 offset_req_ies;
317 __le16 resp_ies;
318 struct resp_ie {
319 __le16 capa;
320 __le16 status_code;
321 __le16 assoc_id;
322 } resp_ie;
323 __le32 resp_ie_length;
324 __le32 offset_resp_ies;
325 } __packed;
326
327 struct ndis_80211_auth_encr_pair {
328 __le32 auth_mode;
329 __le32 encr_mode;
330 } __packed;
331
332 struct ndis_80211_capability {
333 __le32 length;
334 __le32 version;
335 __le32 num_pmkids;
336 __le32 num_auth_encr_pair;
337 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
338 } __packed;
339
340 struct ndis_80211_bssid_info {
341 u8 bssid[6];
342 u8 pmkid[16];
343 } __packed;
344
345 struct ndis_80211_pmkid {
346 __le32 length;
347 __le32 bssid_info_count;
348 struct ndis_80211_bssid_info bssid_info[0];
349 } __packed;
350
351 /*
352 * private data
353 */
354 #define CAP_MODE_80211A 1
355 #define CAP_MODE_80211B 2
356 #define CAP_MODE_80211G 4
357 #define CAP_MODE_MASK 7
358
359 #define WORK_LINK_UP (1<<0)
360 #define WORK_LINK_DOWN (1<<1)
361 #define WORK_SET_MULTICAST_LIST (1<<2)
362
363 #define RNDIS_WLAN_ALG_NONE 0
364 #define RNDIS_WLAN_ALG_WEP (1<<0)
365 #define RNDIS_WLAN_ALG_TKIP (1<<1)
366 #define RNDIS_WLAN_ALG_CCMP (1<<2)
367
368 #define RNDIS_WLAN_NUM_KEYS 4
369 #define RNDIS_WLAN_KEY_MGMT_NONE 0
370 #define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
371 #define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
372
373 #define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
374
375 static const struct ieee80211_channel rndis_channels[] = {
376 { .center_freq = 2412 },
377 { .center_freq = 2417 },
378 { .center_freq = 2422 },
379 { .center_freq = 2427 },
380 { .center_freq = 2432 },
381 { .center_freq = 2437 },
382 { .center_freq = 2442 },
383 { .center_freq = 2447 },
384 { .center_freq = 2452 },
385 { .center_freq = 2457 },
386 { .center_freq = 2462 },
387 { .center_freq = 2467 },
388 { .center_freq = 2472 },
389 { .center_freq = 2484 },
390 };
391
392 static const struct ieee80211_rate rndis_rates[] = {
393 { .bitrate = 10 },
394 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
395 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
396 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
397 { .bitrate = 60 },
398 { .bitrate = 90 },
399 { .bitrate = 120 },
400 { .bitrate = 180 },
401 { .bitrate = 240 },
402 { .bitrate = 360 },
403 { .bitrate = 480 },
404 { .bitrate = 540 }
405 };
406
407 static const u32 rndis_cipher_suites[] = {
408 WLAN_CIPHER_SUITE_WEP40,
409 WLAN_CIPHER_SUITE_WEP104,
410 WLAN_CIPHER_SUITE_TKIP,
411 WLAN_CIPHER_SUITE_CCMP,
412 };
413
414 struct rndis_wlan_encr_key {
415 int len;
416 u32 cipher;
417 u8 material[32];
418 u8 bssid[ETH_ALEN];
419 bool pairwise;
420 bool tx_key;
421 };
422
423 /* RNDIS device private data */
424 struct rndis_wlan_private {
425 struct usbnet *usbdev;
426
427 struct wireless_dev wdev;
428
429 struct cfg80211_scan_request *scan_request;
430
431 struct workqueue_struct *workqueue;
432 struct delayed_work dev_poller_work;
433 struct delayed_work scan_work;
434 struct work_struct work;
435 struct mutex command_lock;
436 unsigned long work_pending;
437 int last_qual;
438 s32 cqm_rssi_thold;
439 u32 cqm_rssi_hyst;
440 int last_cqm_event_rssi;
441
442 struct ieee80211_supported_band band;
443 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
444 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
445 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
446
447 int device_type;
448 int caps;
449 int multicast_size;
450
451 /* module parameters */
452 char param_country[4];
453 int param_frameburst;
454 int param_afterburner;
455 int param_power_save;
456 int param_power_output;
457 int param_roamtrigger;
458 int param_roamdelta;
459 u32 param_workaround_interval;
460
461 /* hardware state */
462 bool radio_on;
463 int power_mode;
464 int infra_mode;
465 bool connected;
466 u8 bssid[ETH_ALEN];
467 u32 current_command_oid;
468
469 /* encryption stuff */
470 u8 encr_tx_key_index;
471 struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
472 int wpa_version;
473
474 u8 command_buffer[COMMAND_BUFFER_SIZE];
475 };
476
477 /*
478 * cfg80211 ops
479 */
480 static int rndis_change_virtual_intf(struct wiphy *wiphy,
481 struct net_device *dev,
482 enum nl80211_iftype type, u32 *flags,
483 struct vif_params *params);
484
485 static int rndis_scan(struct wiphy *wiphy,
486 struct cfg80211_scan_request *request);
487
488 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
489
490 static int rndis_set_tx_power(struct wiphy *wiphy,
491 struct wireless_dev *wdev,
492 enum nl80211_tx_power_setting type,
493 int mbm);
494 static int rndis_get_tx_power(struct wiphy *wiphy,
495 struct wireless_dev *wdev,
496 int *dbm);
497
498 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
499 struct cfg80211_connect_params *sme);
500
501 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
502 u16 reason_code);
503
504 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
505 struct cfg80211_ibss_params *params);
506
507 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
508
509 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
510 u8 key_index, bool pairwise, const u8 *mac_addr,
511 struct key_params *params);
512
513 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
514 u8 key_index, bool pairwise, const u8 *mac_addr);
515
516 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
517 u8 key_index, bool unicast, bool multicast);
518
519 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
520 const u8 *mac, struct station_info *sinfo);
521
522 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
523 int idx, u8 *mac, struct station_info *sinfo);
524
525 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
526 struct cfg80211_pmksa *pmksa);
527
528 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
529 struct cfg80211_pmksa *pmksa);
530
531 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
532
533 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
534 bool enabled, int timeout);
535
536 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
537 struct net_device *dev,
538 s32 rssi_thold, u32 rssi_hyst);
539
540 static const struct cfg80211_ops rndis_config_ops = {
541 .change_virtual_intf = rndis_change_virtual_intf,
542 .scan = rndis_scan,
543 .set_wiphy_params = rndis_set_wiphy_params,
544 .set_tx_power = rndis_set_tx_power,
545 .get_tx_power = rndis_get_tx_power,
546 .connect = rndis_connect,
547 .disconnect = rndis_disconnect,
548 .join_ibss = rndis_join_ibss,
549 .leave_ibss = rndis_leave_ibss,
550 .add_key = rndis_add_key,
551 .del_key = rndis_del_key,
552 .set_default_key = rndis_set_default_key,
553 .get_station = rndis_get_station,
554 .dump_station = rndis_dump_station,
555 .set_pmksa = rndis_set_pmksa,
556 .del_pmksa = rndis_del_pmksa,
557 .flush_pmksa = rndis_flush_pmksa,
558 .set_power_mgmt = rndis_set_power_mgmt,
559 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
560 };
561
562 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
563
564
get_rndis_wlan_priv(struct usbnet * dev)565 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
566 {
567 return (struct rndis_wlan_private *)dev->driver_priv;
568 }
569
get_bcm4320_power_dbm(struct rndis_wlan_private * priv)570 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
571 {
572 switch (priv->param_power_output) {
573 default:
574 case 3:
575 return BCM4320_DEFAULT_TXPOWER_DBM_100;
576 case 2:
577 return BCM4320_DEFAULT_TXPOWER_DBM_75;
578 case 1:
579 return BCM4320_DEFAULT_TXPOWER_DBM_50;
580 case 0:
581 return BCM4320_DEFAULT_TXPOWER_DBM_25;
582 }
583 }
584
is_wpa_key(struct rndis_wlan_private * priv,u8 idx)585 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
586 {
587 int cipher = priv->encr_keys[idx].cipher;
588
589 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
590 cipher == WLAN_CIPHER_SUITE_TKIP);
591 }
592
rndis_cipher_to_alg(u32 cipher)593 static int rndis_cipher_to_alg(u32 cipher)
594 {
595 switch (cipher) {
596 default:
597 return RNDIS_WLAN_ALG_NONE;
598 case WLAN_CIPHER_SUITE_WEP40:
599 case WLAN_CIPHER_SUITE_WEP104:
600 return RNDIS_WLAN_ALG_WEP;
601 case WLAN_CIPHER_SUITE_TKIP:
602 return RNDIS_WLAN_ALG_TKIP;
603 case WLAN_CIPHER_SUITE_CCMP:
604 return RNDIS_WLAN_ALG_CCMP;
605 }
606 }
607
rndis_akm_suite_to_key_mgmt(u32 akm_suite)608 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
609 {
610 switch (akm_suite) {
611 default:
612 return RNDIS_WLAN_KEY_MGMT_NONE;
613 case WLAN_AKM_SUITE_8021X:
614 return RNDIS_WLAN_KEY_MGMT_802_1X;
615 case WLAN_AKM_SUITE_PSK:
616 return RNDIS_WLAN_KEY_MGMT_PSK;
617 }
618 }
619
620 #ifdef DEBUG
oid_to_string(u32 oid)621 static const char *oid_to_string(u32 oid)
622 {
623 switch (oid) {
624 #define OID_STR(oid) case oid: return(#oid)
625 /* from rndis_host.h */
626 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
627 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
628 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
629 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
630
631 /* from rndis_wlan.c */
632 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
633 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
634
635 OID_STR(RNDIS_OID_GEN_XMIT_OK);
636 OID_STR(RNDIS_OID_GEN_RCV_OK);
637 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
638 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
639 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
640
641 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
642 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
643 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
644
645 OID_STR(RNDIS_OID_802_11_BSSID);
646 OID_STR(RNDIS_OID_802_11_SSID);
647 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
648 OID_STR(RNDIS_OID_802_11_ADD_WEP);
649 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
650 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
651 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
652 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
653 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
654 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
655 OID_STR(RNDIS_OID_802_11_ADD_KEY);
656 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
657 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
658 OID_STR(RNDIS_OID_802_11_CAPABILITY);
659 OID_STR(RNDIS_OID_802_11_PMKID);
660 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
661 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
662 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
663 OID_STR(RNDIS_OID_802_11_RSSI);
664 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
665 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
666 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
667 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
668 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
669 OID_STR(RNDIS_OID_802_11_POWER_MODE);
670 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
671 #undef OID_STR
672 }
673
674 return "?";
675 }
676 #else
oid_to_string(u32 oid)677 static const char *oid_to_string(u32 oid)
678 {
679 return "?";
680 }
681 #endif
682
683 /* translate error code */
rndis_error_status(__le32 rndis_status)684 static int rndis_error_status(__le32 rndis_status)
685 {
686 int ret = -EINVAL;
687 switch (le32_to_cpu(rndis_status)) {
688 case RNDIS_STATUS_SUCCESS:
689 ret = 0;
690 break;
691 case RNDIS_STATUS_FAILURE:
692 case RNDIS_STATUS_INVALID_DATA:
693 ret = -EINVAL;
694 break;
695 case RNDIS_STATUS_NOT_SUPPORTED:
696 ret = -EOPNOTSUPP;
697 break;
698 case RNDIS_STATUS_ADAPTER_NOT_READY:
699 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
700 ret = -EBUSY;
701 break;
702 }
703 return ret;
704 }
705
rndis_query_oid(struct usbnet * dev,u32 oid,void * data,int * len)706 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
707 {
708 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
709 union {
710 void *buf;
711 struct rndis_msg_hdr *header;
712 struct rndis_query *get;
713 struct rndis_query_c *get_c;
714 } u;
715 int ret, buflen;
716 int resplen, respoffs, copylen;
717
718 buflen = *len + sizeof(*u.get);
719 if (buflen < CONTROL_BUFFER_SIZE)
720 buflen = CONTROL_BUFFER_SIZE;
721
722 if (buflen > COMMAND_BUFFER_SIZE) {
723 u.buf = kmalloc(buflen, GFP_KERNEL);
724 if (!u.buf)
725 return -ENOMEM;
726 } else {
727 u.buf = priv->command_buffer;
728 }
729
730 mutex_lock(&priv->command_lock);
731
732 memset(u.get, 0, sizeof *u.get);
733 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
734 u.get->msg_len = cpu_to_le32(sizeof *u.get);
735 u.get->oid = cpu_to_le32(oid);
736
737 priv->current_command_oid = oid;
738 ret = rndis_command(dev, u.header, buflen);
739 priv->current_command_oid = 0;
740 if (ret < 0)
741 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
742 __func__, oid_to_string(oid), ret,
743 le32_to_cpu(u.get_c->status));
744
745 if (ret == 0) {
746 resplen = le32_to_cpu(u.get_c->len);
747 respoffs = le32_to_cpu(u.get_c->offset) + 8;
748
749 if (respoffs > buflen) {
750 /* Device returned data offset outside buffer, error. */
751 netdev_dbg(dev->net, "%s(%s): received invalid "
752 "data offset: %d > %d\n", __func__,
753 oid_to_string(oid), respoffs, buflen);
754
755 ret = -EINVAL;
756 goto exit_unlock;
757 }
758
759 if ((resplen + respoffs) > buflen) {
760 /* Device would have returned more data if buffer would
761 * have been big enough. Copy just the bits that we got.
762 */
763 copylen = buflen - respoffs;
764 } else {
765 copylen = resplen;
766 }
767
768 if (copylen > *len)
769 copylen = *len;
770
771 memcpy(data, u.buf + respoffs, copylen);
772
773 *len = resplen;
774
775 ret = rndis_error_status(u.get_c->status);
776 if (ret < 0)
777 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
778 __func__, oid_to_string(oid),
779 le32_to_cpu(u.get_c->status), ret);
780 }
781
782 exit_unlock:
783 mutex_unlock(&priv->command_lock);
784
785 if (u.buf != priv->command_buffer)
786 kfree(u.buf);
787 return ret;
788 }
789
rndis_set_oid(struct usbnet * dev,u32 oid,const void * data,int len)790 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
791 int len)
792 {
793 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
794 union {
795 void *buf;
796 struct rndis_msg_hdr *header;
797 struct rndis_set *set;
798 struct rndis_set_c *set_c;
799 } u;
800 int ret, buflen;
801
802 buflen = len + sizeof(*u.set);
803 if (buflen < CONTROL_BUFFER_SIZE)
804 buflen = CONTROL_BUFFER_SIZE;
805
806 if (buflen > COMMAND_BUFFER_SIZE) {
807 u.buf = kmalloc(buflen, GFP_KERNEL);
808 if (!u.buf)
809 return -ENOMEM;
810 } else {
811 u.buf = priv->command_buffer;
812 }
813
814 mutex_lock(&priv->command_lock);
815
816 memset(u.set, 0, sizeof *u.set);
817 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
818 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
819 u.set->oid = cpu_to_le32(oid);
820 u.set->len = cpu_to_le32(len);
821 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
822 u.set->handle = cpu_to_le32(0);
823 memcpy(u.buf + sizeof(*u.set), data, len);
824
825 priv->current_command_oid = oid;
826 ret = rndis_command(dev, u.header, buflen);
827 priv->current_command_oid = 0;
828 if (ret < 0)
829 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
830 __func__, oid_to_string(oid), ret,
831 le32_to_cpu(u.set_c->status));
832
833 if (ret == 0) {
834 ret = rndis_error_status(u.set_c->status);
835
836 if (ret < 0)
837 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
838 __func__, oid_to_string(oid),
839 le32_to_cpu(u.set_c->status), ret);
840 }
841
842 mutex_unlock(&priv->command_lock);
843
844 if (u.buf != priv->command_buffer)
845 kfree(u.buf);
846 return ret;
847 }
848
rndis_reset(struct usbnet * usbdev)849 static int rndis_reset(struct usbnet *usbdev)
850 {
851 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
852 struct rndis_reset *reset;
853 int ret;
854
855 mutex_lock(&priv->command_lock);
856
857 reset = (void *)priv->command_buffer;
858 memset(reset, 0, sizeof(*reset));
859 reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
860 reset->msg_len = cpu_to_le32(sizeof(*reset));
861 priv->current_command_oid = 0;
862 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
863
864 mutex_unlock(&priv->command_lock);
865
866 if (ret < 0)
867 return ret;
868 return 0;
869 }
870
871 /*
872 * Specs say that we can only set config parameters only soon after device
873 * initialization.
874 * value_type: 0 = u32, 2 = unicode string
875 */
rndis_set_config_parameter(struct usbnet * dev,char * param,int value_type,void * value)876 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
877 int value_type, void *value)
878 {
879 struct ndis_config_param *infobuf;
880 int value_len, info_len, param_len, ret, i;
881 __le16 *unibuf;
882 __le32 *dst_value;
883
884 if (value_type == 0)
885 value_len = sizeof(__le32);
886 else if (value_type == 2)
887 value_len = strlen(value) * sizeof(__le16);
888 else
889 return -EINVAL;
890
891 param_len = strlen(param) * sizeof(__le16);
892 info_len = sizeof(*infobuf) + param_len + value_len;
893
894 #ifdef DEBUG
895 info_len += 12;
896 #endif
897 infobuf = kmalloc(info_len, GFP_KERNEL);
898 if (!infobuf)
899 return -ENOMEM;
900
901 #ifdef DEBUG
902 info_len -= 12;
903 /* extra 12 bytes are for padding (debug output) */
904 memset(infobuf, 0xCC, info_len + 12);
905 #endif
906
907 if (value_type == 2)
908 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
909 param, (u8 *)value);
910 else
911 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
912 param, *(u32 *)value);
913
914 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
915 infobuf->name_length = cpu_to_le32(param_len);
916 infobuf->type = cpu_to_le32(value_type);
917 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
918 infobuf->value_length = cpu_to_le32(value_len);
919
920 /* simple string to unicode string conversion */
921 unibuf = (void *)infobuf + sizeof(*infobuf);
922 for (i = 0; i < param_len / sizeof(__le16); i++)
923 unibuf[i] = cpu_to_le16(param[i]);
924
925 if (value_type == 2) {
926 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
927 for (i = 0; i < value_len / sizeof(__le16); i++)
928 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
929 } else {
930 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
931 *dst_value = cpu_to_le32(*(u32 *)value);
932 }
933
934 #ifdef DEBUG
935 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
936 for (i = 0; i < info_len; i += 12) {
937 u32 *tmp = (u32 *)((u8 *)infobuf + i);
938 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
939 cpu_to_be32(tmp[0]),
940 cpu_to_be32(tmp[1]),
941 cpu_to_be32(tmp[2]));
942 }
943 #endif
944
945 ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
946 infobuf, info_len);
947 if (ret != 0)
948 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
949 ret);
950
951 kfree(infobuf);
952 return ret;
953 }
954
rndis_set_config_parameter_str(struct usbnet * dev,char * param,char * value)955 static int rndis_set_config_parameter_str(struct usbnet *dev,
956 char *param, char *value)
957 {
958 return rndis_set_config_parameter(dev, param, 2, value);
959 }
960
961 /*
962 * data conversion functions
963 */
level_to_qual(int level)964 static int level_to_qual(int level)
965 {
966 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
967 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
968 }
969
970 /*
971 * common functions
972 */
973 static int set_infra_mode(struct usbnet *usbdev, int mode);
974 static void restore_keys(struct usbnet *usbdev);
975 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
976 bool *matched);
977
rndis_start_bssid_list_scan(struct usbnet * usbdev)978 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
979 {
980 __le32 tmp;
981
982 /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
983 tmp = cpu_to_le32(1);
984 return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
985 sizeof(tmp));
986 }
987
set_essid(struct usbnet * usbdev,struct ndis_80211_ssid * ssid)988 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
989 {
990 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
991 int ret;
992
993 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
994 ssid, sizeof(*ssid));
995 if (ret < 0) {
996 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
997 return ret;
998 }
999 if (ret == 0) {
1000 priv->radio_on = true;
1001 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1002 }
1003
1004 return ret;
1005 }
1006
set_bssid(struct usbnet * usbdev,const u8 * bssid)1007 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1008 {
1009 int ret;
1010
1011 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1012 bssid, ETH_ALEN);
1013 if (ret < 0) {
1014 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1015 bssid, ret);
1016 return ret;
1017 }
1018
1019 return ret;
1020 }
1021
clear_bssid(struct usbnet * usbdev)1022 static int clear_bssid(struct usbnet *usbdev)
1023 {
1024 static const u8 broadcast_mac[ETH_ALEN] = {
1025 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1026 };
1027
1028 return set_bssid(usbdev, broadcast_mac);
1029 }
1030
get_bssid(struct usbnet * usbdev,u8 bssid[ETH_ALEN])1031 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1032 {
1033 int ret, len;
1034
1035 len = ETH_ALEN;
1036 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1037 bssid, &len);
1038
1039 if (ret != 0)
1040 memset(bssid, 0, ETH_ALEN);
1041
1042 return ret;
1043 }
1044
get_association_info(struct usbnet * usbdev,struct ndis_80211_assoc_info * info,int len)1045 static int get_association_info(struct usbnet *usbdev,
1046 struct ndis_80211_assoc_info *info, int len)
1047 {
1048 return rndis_query_oid(usbdev,
1049 RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1050 info, &len);
1051 }
1052
is_associated(struct usbnet * usbdev)1053 static bool is_associated(struct usbnet *usbdev)
1054 {
1055 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1056 u8 bssid[ETH_ALEN];
1057 int ret;
1058
1059 if (!priv->radio_on)
1060 return false;
1061
1062 ret = get_bssid(usbdev, bssid);
1063
1064 return (ret == 0 && !is_zero_ether_addr(bssid));
1065 }
1066
disassociate(struct usbnet * usbdev,bool reset_ssid)1067 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1068 {
1069 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1070 struct ndis_80211_ssid ssid;
1071 int i, ret = 0;
1072
1073 if (priv->radio_on) {
1074 ret = rndis_set_oid(usbdev,
1075 RNDIS_OID_802_11_DISASSOCIATE,
1076 NULL, 0);
1077 if (ret == 0) {
1078 priv->radio_on = false;
1079 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1080 __func__);
1081
1082 if (reset_ssid)
1083 msleep(100);
1084 }
1085 }
1086
1087 /* disassociate causes radio to be turned off; if reset_ssid
1088 * is given, set random ssid to enable radio */
1089 if (reset_ssid) {
1090 /* Set device to infrastructure mode so we don't get ad-hoc
1091 * 'media connect' indications with the random ssid.
1092 */
1093 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1094
1095 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1096 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1097 ssid.essid[0] = 0x1;
1098 ssid.essid[1] = 0xff;
1099 for (i = 2; i < sizeof(ssid.essid); i++)
1100 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1101 ret = set_essid(usbdev, &ssid);
1102 }
1103 return ret;
1104 }
1105
set_auth_mode(struct usbnet * usbdev,u32 wpa_version,enum nl80211_auth_type auth_type,int keymgmt)1106 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1107 enum nl80211_auth_type auth_type, int keymgmt)
1108 {
1109 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1110 __le32 tmp;
1111 int auth_mode, ret;
1112
1113 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1114 __func__, wpa_version, auth_type, keymgmt);
1115
1116 if (wpa_version & NL80211_WPA_VERSION_2) {
1117 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1118 auth_mode = NDIS_80211_AUTH_WPA2;
1119 else
1120 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1121 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1122 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1123 auth_mode = NDIS_80211_AUTH_WPA;
1124 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1125 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1126 else
1127 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1128 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1129 auth_mode = NDIS_80211_AUTH_SHARED;
1130 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1131 auth_mode = NDIS_80211_AUTH_OPEN;
1132 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1133 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1134 else
1135 return -ENOTSUPP;
1136
1137 tmp = cpu_to_le32(auth_mode);
1138 ret = rndis_set_oid(usbdev,
1139 RNDIS_OID_802_11_AUTHENTICATION_MODE,
1140 &tmp, sizeof(tmp));
1141 if (ret != 0) {
1142 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1143 ret);
1144 return ret;
1145 }
1146
1147 priv->wpa_version = wpa_version;
1148
1149 return 0;
1150 }
1151
set_priv_filter(struct usbnet * usbdev)1152 static int set_priv_filter(struct usbnet *usbdev)
1153 {
1154 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155 __le32 tmp;
1156
1157 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1158 __func__, priv->wpa_version);
1159
1160 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1161 priv->wpa_version & NL80211_WPA_VERSION_1)
1162 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1163 else
1164 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1165
1166 return rndis_set_oid(usbdev,
1167 RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1168 sizeof(tmp));
1169 }
1170
set_encr_mode(struct usbnet * usbdev,int pairwise,int groupwise)1171 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1172 {
1173 __le32 tmp;
1174 int encr_mode, ret;
1175
1176 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1177 __func__, pairwise, groupwise);
1178
1179 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1180 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1181 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1182 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1183 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1184 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1185 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1186 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1187 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1188 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1189 else
1190 encr_mode = NDIS_80211_ENCR_DISABLED;
1191
1192 tmp = cpu_to_le32(encr_mode);
1193 ret = rndis_set_oid(usbdev,
1194 RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1195 sizeof(tmp));
1196 if (ret != 0) {
1197 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1198 ret);
1199 return ret;
1200 }
1201
1202 return 0;
1203 }
1204
set_infra_mode(struct usbnet * usbdev,int mode)1205 static int set_infra_mode(struct usbnet *usbdev, int mode)
1206 {
1207 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1208 __le32 tmp;
1209 int ret;
1210
1211 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1212 __func__, priv->infra_mode);
1213
1214 tmp = cpu_to_le32(mode);
1215 ret = rndis_set_oid(usbdev,
1216 RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1217 &tmp, sizeof(tmp));
1218 if (ret != 0) {
1219 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1220 ret);
1221 return ret;
1222 }
1223
1224 /* NDIS drivers clear keys when infrastructure mode is
1225 * changed. But Linux tools assume otherwise. So set the
1226 * keys */
1227 restore_keys(usbdev);
1228
1229 priv->infra_mode = mode;
1230 return 0;
1231 }
1232
set_rts_threshold(struct usbnet * usbdev,u32 rts_threshold)1233 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1234 {
1235 __le32 tmp;
1236
1237 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1238
1239 if (rts_threshold < 0 || rts_threshold > 2347)
1240 rts_threshold = 2347;
1241
1242 tmp = cpu_to_le32(rts_threshold);
1243 return rndis_set_oid(usbdev,
1244 RNDIS_OID_802_11_RTS_THRESHOLD,
1245 &tmp, sizeof(tmp));
1246 }
1247
set_frag_threshold(struct usbnet * usbdev,u32 frag_threshold)1248 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1249 {
1250 __le32 tmp;
1251
1252 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1253
1254 if (frag_threshold < 256 || frag_threshold > 2346)
1255 frag_threshold = 2346;
1256
1257 tmp = cpu_to_le32(frag_threshold);
1258 return rndis_set_oid(usbdev,
1259 RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1260 &tmp, sizeof(tmp));
1261 }
1262
set_default_iw_params(struct usbnet * usbdev)1263 static void set_default_iw_params(struct usbnet *usbdev)
1264 {
1265 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1266 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1267 RNDIS_WLAN_KEY_MGMT_NONE);
1268 set_priv_filter(usbdev);
1269 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1270 }
1271
deauthenticate(struct usbnet * usbdev)1272 static int deauthenticate(struct usbnet *usbdev)
1273 {
1274 int ret;
1275
1276 ret = disassociate(usbdev, true);
1277 set_default_iw_params(usbdev);
1278 return ret;
1279 }
1280
set_channel(struct usbnet * usbdev,int channel)1281 static int set_channel(struct usbnet *usbdev, int channel)
1282 {
1283 struct ndis_80211_conf config;
1284 unsigned int dsconfig;
1285 int len, ret;
1286
1287 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1288
1289 /* this OID is valid only when not associated */
1290 if (is_associated(usbdev))
1291 return 0;
1292
1293 dsconfig = 1000 *
1294 ieee80211_channel_to_frequency(channel, IEEE80211_BAND_2GHZ);
1295
1296 len = sizeof(config);
1297 ret = rndis_query_oid(usbdev,
1298 RNDIS_OID_802_11_CONFIGURATION,
1299 &config, &len);
1300 if (ret < 0) {
1301 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1302 __func__);
1303 return ret;
1304 }
1305
1306 config.ds_config = cpu_to_le32(dsconfig);
1307 ret = rndis_set_oid(usbdev,
1308 RNDIS_OID_802_11_CONFIGURATION,
1309 &config, sizeof(config));
1310
1311 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1312
1313 return ret;
1314 }
1315
get_current_channel(struct usbnet * usbdev,u32 * beacon_period)1316 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1317 u32 *beacon_period)
1318 {
1319 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1320 struct ieee80211_channel *channel;
1321 struct ndis_80211_conf config;
1322 int len, ret;
1323
1324 /* Get channel and beacon interval */
1325 len = sizeof(config);
1326 ret = rndis_query_oid(usbdev,
1327 RNDIS_OID_802_11_CONFIGURATION,
1328 &config, &len);
1329 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1330 __func__, ret);
1331 if (ret < 0)
1332 return NULL;
1333
1334 channel = ieee80211_get_channel(priv->wdev.wiphy,
1335 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1336 if (!channel)
1337 return NULL;
1338
1339 if (beacon_period)
1340 *beacon_period = le32_to_cpu(config.beacon_period);
1341 return channel;
1342 }
1343
1344 /* index must be 0 - N, as per NDIS */
add_wep_key(struct usbnet * usbdev,const u8 * key,int key_len,u8 index)1345 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1346 u8 index)
1347 {
1348 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1349 struct ndis_80211_wep_key ndis_key;
1350 u32 cipher;
1351 int ret;
1352
1353 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1354 __func__, index, key_len);
1355
1356 if (index >= RNDIS_WLAN_NUM_KEYS)
1357 return -EINVAL;
1358
1359 if (key_len == 5)
1360 cipher = WLAN_CIPHER_SUITE_WEP40;
1361 else if (key_len == 13)
1362 cipher = WLAN_CIPHER_SUITE_WEP104;
1363 else
1364 return -EINVAL;
1365
1366 memset(&ndis_key, 0, sizeof(ndis_key));
1367
1368 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1369 ndis_key.length = cpu_to_le32(key_len);
1370 ndis_key.index = cpu_to_le32(index);
1371 memcpy(&ndis_key.material, key, key_len);
1372
1373 if (index == priv->encr_tx_key_index) {
1374 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1375 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1376 RNDIS_WLAN_ALG_NONE);
1377 if (ret)
1378 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1379 ret);
1380 }
1381
1382 ret = rndis_set_oid(usbdev,
1383 RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1384 sizeof(ndis_key));
1385 if (ret != 0) {
1386 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1387 index + 1, ret);
1388 return ret;
1389 }
1390
1391 priv->encr_keys[index].len = key_len;
1392 priv->encr_keys[index].cipher = cipher;
1393 memcpy(&priv->encr_keys[index].material, key, key_len);
1394 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1395
1396 return 0;
1397 }
1398
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)1399 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1400 u8 index, const u8 *addr, const u8 *rx_seq,
1401 int seq_len, u32 cipher, __le32 flags)
1402 {
1403 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1404 struct ndis_80211_key ndis_key;
1405 bool is_addr_ok;
1406 int ret;
1407
1408 if (index >= RNDIS_WLAN_NUM_KEYS) {
1409 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1410 __func__, index);
1411 return -EINVAL;
1412 }
1413 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1414 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1415 __func__, key_len);
1416 return -EINVAL;
1417 }
1418 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1419 if (!rx_seq || seq_len <= 0) {
1420 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1421 __func__);
1422 return -EINVAL;
1423 }
1424 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1425 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1426 return -EINVAL;
1427 }
1428 }
1429
1430 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1431 !is_broadcast_ether_addr(addr);
1432 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1433 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1434 __func__, addr);
1435 return -EINVAL;
1436 }
1437
1438 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1439 __func__, index,
1440 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1441 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1442 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1443
1444 memset(&ndis_key, 0, sizeof(ndis_key));
1445
1446 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1447 sizeof(ndis_key.material) + key_len);
1448 ndis_key.length = cpu_to_le32(key_len);
1449 ndis_key.index = cpu_to_le32(index) | flags;
1450
1451 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1452 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1453 * different order than NDIS spec, so swap the order here. */
1454 memcpy(ndis_key.material, key, 16);
1455 memcpy(ndis_key.material + 16, key + 24, 8);
1456 memcpy(ndis_key.material + 24, key + 16, 8);
1457 } else
1458 memcpy(ndis_key.material, key, key_len);
1459
1460 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1461 memcpy(ndis_key.rsc, rx_seq, seq_len);
1462
1463 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1464 /* pairwise key */
1465 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1466 } else {
1467 /* group key */
1468 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1469 memset(ndis_key.bssid, 0xff, ETH_ALEN);
1470 else
1471 get_bssid(usbdev, ndis_key.bssid);
1472 }
1473
1474 ret = rndis_set_oid(usbdev,
1475 RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1476 le32_to_cpu(ndis_key.size));
1477 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1478 __func__, ret);
1479 if (ret != 0)
1480 return ret;
1481
1482 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1483 priv->encr_keys[index].len = key_len;
1484 priv->encr_keys[index].cipher = cipher;
1485 memcpy(&priv->encr_keys[index].material, key, key_len);
1486 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1487 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1488 else
1489 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1490
1491 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1492 priv->encr_tx_key_index = index;
1493
1494 return 0;
1495 }
1496
restore_key(struct usbnet * usbdev,u8 key_idx)1497 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1498 {
1499 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1500 struct rndis_wlan_encr_key key;
1501
1502 if (is_wpa_key(priv, key_idx))
1503 return 0;
1504
1505 key = priv->encr_keys[key_idx];
1506
1507 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1508
1509 if (key.len == 0)
1510 return 0;
1511
1512 return add_wep_key(usbdev, key.material, key.len, key_idx);
1513 }
1514
restore_keys(struct usbnet * usbdev)1515 static void restore_keys(struct usbnet *usbdev)
1516 {
1517 int i;
1518
1519 for (i = 0; i < 4; i++)
1520 restore_key(usbdev, i);
1521 }
1522
clear_key(struct rndis_wlan_private * priv,u8 idx)1523 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1524 {
1525 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1526 }
1527
1528 /* remove_key is for both wep and wpa */
remove_key(struct usbnet * usbdev,u8 index,const u8 * bssid)1529 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1530 {
1531 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1532 struct ndis_80211_remove_key remove_key;
1533 __le32 keyindex;
1534 bool is_wpa;
1535 int ret;
1536
1537 if (index >= RNDIS_WLAN_NUM_KEYS)
1538 return -ENOENT;
1539
1540 if (priv->encr_keys[index].len == 0)
1541 return 0;
1542
1543 is_wpa = is_wpa_key(priv, index);
1544
1545 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1546 __func__, index, is_wpa ? "wpa" : "wep",
1547 priv->encr_keys[index].len);
1548
1549 clear_key(priv, index);
1550
1551 if (is_wpa) {
1552 remove_key.size = cpu_to_le32(sizeof(remove_key));
1553 remove_key.index = cpu_to_le32(index);
1554 if (bssid) {
1555 /* pairwise key */
1556 if (!is_broadcast_ether_addr(bssid))
1557 remove_key.index |=
1558 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1559 memcpy(remove_key.bssid, bssid,
1560 sizeof(remove_key.bssid));
1561 } else
1562 memset(remove_key.bssid, 0xff,
1563 sizeof(remove_key.bssid));
1564
1565 ret = rndis_set_oid(usbdev,
1566 RNDIS_OID_802_11_REMOVE_KEY,
1567 &remove_key, sizeof(remove_key));
1568 if (ret != 0)
1569 return ret;
1570 } else {
1571 keyindex = cpu_to_le32(index);
1572 ret = rndis_set_oid(usbdev,
1573 RNDIS_OID_802_11_REMOVE_WEP,
1574 &keyindex, sizeof(keyindex));
1575 if (ret != 0) {
1576 netdev_warn(usbdev->net,
1577 "removing encryption key %d failed (%08X)\n",
1578 index, ret);
1579 return ret;
1580 }
1581 }
1582
1583 /* if it is transmit key, disable encryption */
1584 if (index == priv->encr_tx_key_index)
1585 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1586
1587 return 0;
1588 }
1589
set_multicast_list(struct usbnet * usbdev)1590 static void set_multicast_list(struct usbnet *usbdev)
1591 {
1592 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1593 struct netdev_hw_addr *ha;
1594 __le32 filter, basefilter;
1595 int ret;
1596 char *mc_addrs = NULL;
1597 int mc_count;
1598
1599 basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1600 RNDIS_PACKET_TYPE_BROADCAST);
1601
1602 if (usbdev->net->flags & IFF_PROMISC) {
1603 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1604 RNDIS_PACKET_TYPE_ALL_LOCAL);
1605 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1606 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1607 }
1608
1609 if (filter != basefilter)
1610 goto set_filter;
1611
1612 /*
1613 * mc_list should be accessed holding the lock, so copy addresses to
1614 * local buffer first.
1615 */
1616 netif_addr_lock_bh(usbdev->net);
1617 mc_count = netdev_mc_count(usbdev->net);
1618 if (mc_count > priv->multicast_size) {
1619 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1620 } else if (mc_count) {
1621 int i = 0;
1622
1623 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1624 if (!mc_addrs) {
1625 netif_addr_unlock_bh(usbdev->net);
1626 return;
1627 }
1628
1629 netdev_for_each_mc_addr(ha, usbdev->net)
1630 memcpy(mc_addrs + i++ * ETH_ALEN,
1631 ha->addr, ETH_ALEN);
1632 }
1633 netif_addr_unlock_bh(usbdev->net);
1634
1635 if (filter != basefilter)
1636 goto set_filter;
1637
1638 if (mc_count) {
1639 ret = rndis_set_oid(usbdev,
1640 RNDIS_OID_802_3_MULTICAST_LIST,
1641 mc_addrs, mc_count * ETH_ALEN);
1642 kfree(mc_addrs);
1643 if (ret == 0)
1644 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1645 else
1646 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1647
1648 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1649 mc_count, priv->multicast_size, ret);
1650 }
1651
1652 set_filter:
1653 ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1654 sizeof(filter));
1655 if (ret < 0) {
1656 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1657 le32_to_cpu(filter));
1658 }
1659
1660 netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1661 le32_to_cpu(filter), ret);
1662 }
1663
1664 #ifdef DEBUG
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1665 static void debug_print_pmkids(struct usbnet *usbdev,
1666 struct ndis_80211_pmkid *pmkids,
1667 const char *func_str)
1668 {
1669 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1670 int i, len, count, max_pmkids, entry_len;
1671
1672 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1673 len = le32_to_cpu(pmkids->length);
1674 count = le32_to_cpu(pmkids->bssid_info_count);
1675
1676 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1677
1678 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1679 "%d)\n", func_str, count, len, entry_len);
1680
1681 if (count > max_pmkids)
1682 count = max_pmkids;
1683
1684 for (i = 0; i < count; i++) {
1685 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1686
1687 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1688 "pmkid: %08X:%08X:%08X:%08X\n",
1689 func_str, pmkids->bssid_info[i].bssid,
1690 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1691 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1692 }
1693 }
1694 #else
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1695 static void debug_print_pmkids(struct usbnet *usbdev,
1696 struct ndis_80211_pmkid *pmkids,
1697 const char *func_str)
1698 {
1699 return;
1700 }
1701 #endif
1702
get_device_pmkids(struct usbnet * usbdev)1703 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1704 {
1705 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1706 struct ndis_80211_pmkid *pmkids;
1707 int len, ret, max_pmkids;
1708
1709 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1710 len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1711
1712 pmkids = kzalloc(len, GFP_KERNEL);
1713 if (!pmkids)
1714 return ERR_PTR(-ENOMEM);
1715
1716 pmkids->length = cpu_to_le32(len);
1717 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1718
1719 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1720 pmkids, &len);
1721 if (ret < 0) {
1722 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1723 " -> %d\n", __func__, len, max_pmkids, ret);
1724
1725 kfree(pmkids);
1726 return ERR_PTR(ret);
1727 }
1728
1729 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1730 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1731
1732 debug_print_pmkids(usbdev, pmkids, __func__);
1733
1734 return pmkids;
1735 }
1736
set_device_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids)1737 static int set_device_pmkids(struct usbnet *usbdev,
1738 struct ndis_80211_pmkid *pmkids)
1739 {
1740 int ret, len, num_pmkids;
1741
1742 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1743 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1744 pmkids->length = cpu_to_le32(len);
1745
1746 debug_print_pmkids(usbdev, pmkids, __func__);
1747
1748 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1749 le32_to_cpu(pmkids->length));
1750 if (ret < 0) {
1751 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1752 "\n", __func__, len, num_pmkids, ret);
1753 }
1754
1755 kfree(pmkids);
1756 return ret;
1757 }
1758
remove_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1759 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1760 struct ndis_80211_pmkid *pmkids,
1761 struct cfg80211_pmksa *pmksa,
1762 int max_pmkids)
1763 {
1764 int i, newlen, err;
1765 unsigned int count;
1766
1767 count = le32_to_cpu(pmkids->bssid_info_count);
1768
1769 if (count > max_pmkids)
1770 count = max_pmkids;
1771
1772 for (i = 0; i < count; i++)
1773 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1774 pmksa->bssid))
1775 break;
1776
1777 /* pmkid not found */
1778 if (i == count) {
1779 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1780 __func__, pmksa->bssid);
1781 err = -ENOENT;
1782 goto error;
1783 }
1784
1785 for (; i + 1 < count; i++)
1786 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1787
1788 count--;
1789 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1790
1791 pmkids->length = cpu_to_le32(newlen);
1792 pmkids->bssid_info_count = cpu_to_le32(count);
1793
1794 return pmkids;
1795 error:
1796 kfree(pmkids);
1797 return ERR_PTR(err);
1798 }
1799
update_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1800 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1801 struct ndis_80211_pmkid *pmkids,
1802 struct cfg80211_pmksa *pmksa,
1803 int max_pmkids)
1804 {
1805 struct ndis_80211_pmkid *new_pmkids;
1806 int i, err, newlen;
1807 unsigned int count;
1808
1809 count = le32_to_cpu(pmkids->bssid_info_count);
1810
1811 if (count > max_pmkids)
1812 count = max_pmkids;
1813
1814 /* update with new pmkid */
1815 for (i = 0; i < count; i++) {
1816 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1817 pmksa->bssid))
1818 continue;
1819
1820 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1821 WLAN_PMKID_LEN);
1822
1823 return pmkids;
1824 }
1825
1826 /* out of space, return error */
1827 if (i == max_pmkids) {
1828 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1829 err = -ENOSPC;
1830 goto error;
1831 }
1832
1833 /* add new pmkid */
1834 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1835
1836 new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1837 if (!new_pmkids) {
1838 err = -ENOMEM;
1839 goto error;
1840 }
1841 pmkids = new_pmkids;
1842
1843 pmkids->length = cpu_to_le32(newlen);
1844 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1845
1846 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1847 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1848
1849 return pmkids;
1850 error:
1851 kfree(pmkids);
1852 return ERR_PTR(err);
1853 }
1854
1855 /*
1856 * cfg80211 ops
1857 */
rndis_change_virtual_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,u32 * flags,struct vif_params * params)1858 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1859 struct net_device *dev,
1860 enum nl80211_iftype type, u32 *flags,
1861 struct vif_params *params)
1862 {
1863 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1864 struct usbnet *usbdev = priv->usbdev;
1865 int mode;
1866
1867 switch (type) {
1868 case NL80211_IFTYPE_ADHOC:
1869 mode = NDIS_80211_INFRA_ADHOC;
1870 break;
1871 case NL80211_IFTYPE_STATION:
1872 mode = NDIS_80211_INFRA_INFRA;
1873 break;
1874 default:
1875 return -EINVAL;
1876 }
1877
1878 priv->wdev.iftype = type;
1879
1880 return set_infra_mode(usbdev, mode);
1881 }
1882
rndis_set_wiphy_params(struct wiphy * wiphy,u32 changed)1883 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1884 {
1885 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1886 struct usbnet *usbdev = priv->usbdev;
1887 int err;
1888
1889 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1890 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1891 if (err < 0)
1892 return err;
1893 }
1894
1895 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1896 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1897 if (err < 0)
1898 return err;
1899 }
1900
1901 return 0;
1902 }
1903
rndis_set_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_tx_power_setting type,int mbm)1904 static int rndis_set_tx_power(struct wiphy *wiphy,
1905 struct wireless_dev *wdev,
1906 enum nl80211_tx_power_setting type,
1907 int mbm)
1908 {
1909 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1910 struct usbnet *usbdev = priv->usbdev;
1911
1912 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1913 __func__, type, mbm);
1914
1915 if (mbm < 0 || (mbm % 100))
1916 return -ENOTSUPP;
1917
1918 /* Device doesn't support changing txpower after initialization, only
1919 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1920 * currently used.
1921 */
1922 if (type == NL80211_TX_POWER_AUTOMATIC ||
1923 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1924 if (!priv->radio_on)
1925 disassociate(usbdev, true); /* turn on radio */
1926
1927 return 0;
1928 }
1929
1930 return -ENOTSUPP;
1931 }
1932
rndis_get_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int * dbm)1933 static int rndis_get_tx_power(struct wiphy *wiphy,
1934 struct wireless_dev *wdev,
1935 int *dbm)
1936 {
1937 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1938 struct usbnet *usbdev = priv->usbdev;
1939
1940 *dbm = get_bcm4320_power_dbm(priv);
1941
1942 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1943
1944 return 0;
1945 }
1946
1947 #define SCAN_DELAY_JIFFIES (6 * HZ)
rndis_scan(struct wiphy * wiphy,struct cfg80211_scan_request * request)1948 static int rndis_scan(struct wiphy *wiphy,
1949 struct cfg80211_scan_request *request)
1950 {
1951 struct net_device *dev = request->wdev->netdev;
1952 struct usbnet *usbdev = netdev_priv(dev);
1953 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1954 int ret;
1955 int delay = SCAN_DELAY_JIFFIES;
1956
1957 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1958
1959 /* Get current bssid list from device before new scan, as new scan
1960 * clears internal bssid list.
1961 */
1962 rndis_check_bssid_list(usbdev, NULL, NULL);
1963
1964 if (priv->scan_request && priv->scan_request != request)
1965 return -EBUSY;
1966
1967 priv->scan_request = request;
1968
1969 ret = rndis_start_bssid_list_scan(usbdev);
1970 if (ret == 0) {
1971 if (priv->device_type == RNDIS_BCM4320A)
1972 delay = HZ;
1973
1974 /* Wait before retrieving scan results from device */
1975 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1976 }
1977
1978 return ret;
1979 }
1980
rndis_bss_info_update(struct usbnet * usbdev,struct ndis_80211_bssid_ex * bssid)1981 static bool rndis_bss_info_update(struct usbnet *usbdev,
1982 struct ndis_80211_bssid_ex *bssid)
1983 {
1984 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1985 struct ieee80211_channel *channel;
1986 struct cfg80211_bss *bss;
1987 s32 signal;
1988 u64 timestamp;
1989 u16 capability;
1990 u16 beacon_interval;
1991 struct ndis_80211_fixed_ies *fixed;
1992 int ie_len, bssid_len;
1993 u8 *ie;
1994
1995 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1996 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1997
1998 /* parse bssid structure */
1999 bssid_len = le32_to_cpu(bssid->length);
2000
2001 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2002 sizeof(struct ndis_80211_fixed_ies))
2003 return NULL;
2004
2005 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2006
2007 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2008 ie_len = min(bssid_len - (int)sizeof(*bssid),
2009 (int)le32_to_cpu(bssid->ie_length));
2010 ie_len -= sizeof(struct ndis_80211_fixed_ies);
2011 if (ie_len < 0)
2012 return NULL;
2013
2014 /* extract data for cfg80211_inform_bss */
2015 channel = ieee80211_get_channel(priv->wdev.wiphy,
2016 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2017 if (!channel)
2018 return NULL;
2019
2020 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2021 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2022 capability = le16_to_cpu(fixed->capabilities);
2023 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2024
2025 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2026 CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2027 timestamp, capability, beacon_interval,
2028 ie, ie_len, signal, GFP_KERNEL);
2029 cfg80211_put_bss(priv->wdev.wiphy, bss);
2030
2031 return (bss != NULL);
2032 }
2033
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,const u8 * mac,struct station_info * sinfo)2493 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2494 const 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,
2716 CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2717 timestamp, capability, beacon_period,
2718 ie_buf, ie_len, signal, GFP_KERNEL);
2719 cfg80211_put_bss(priv->wdev.wiphy, bss);
2720 }
2721
2722 /*
2723 * workers, indication handlers, device poller
2724 */
rndis_wlan_do_link_up_work(struct usbnet * usbdev)2725 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2726 {
2727 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2728 struct ndis_80211_assoc_info *info = NULL;
2729 u8 bssid[ETH_ALEN];
2730 unsigned int resp_ie_len, req_ie_len;
2731 unsigned int offset;
2732 u8 *req_ie, *resp_ie;
2733 int ret;
2734 bool roamed = false;
2735 bool match_bss;
2736
2737 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2738 /* received media connect indication while connected, either
2739 * device reassociated with same AP or roamed to new. */
2740 roamed = true;
2741 }
2742
2743 req_ie_len = 0;
2744 resp_ie_len = 0;
2745 req_ie = NULL;
2746 resp_ie = NULL;
2747
2748 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2749 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2750 if (!info) {
2751 /* No memory? Try resume work later */
2752 set_bit(WORK_LINK_UP, &priv->work_pending);
2753 queue_work(priv->workqueue, &priv->work);
2754 return;
2755 }
2756
2757 /* Get association info IEs from device. */
2758 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2759 if (!ret) {
2760 req_ie_len = le32_to_cpu(info->req_ie_length);
2761 if (req_ie_len > CONTROL_BUFFER_SIZE)
2762 req_ie_len = CONTROL_BUFFER_SIZE;
2763 if (req_ie_len != 0) {
2764 offset = le32_to_cpu(info->offset_req_ies);
2765
2766 if (offset > CONTROL_BUFFER_SIZE)
2767 offset = CONTROL_BUFFER_SIZE;
2768
2769 req_ie = (u8 *)info + offset;
2770
2771 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2772 req_ie_len =
2773 CONTROL_BUFFER_SIZE - offset;
2774 }
2775
2776 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2777 if (resp_ie_len > CONTROL_BUFFER_SIZE)
2778 resp_ie_len = CONTROL_BUFFER_SIZE;
2779 if (resp_ie_len != 0) {
2780 offset = le32_to_cpu(info->offset_resp_ies);
2781
2782 if (offset > CONTROL_BUFFER_SIZE)
2783 offset = CONTROL_BUFFER_SIZE;
2784
2785 resp_ie = (u8 *)info + offset;
2786
2787 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2788 resp_ie_len =
2789 CONTROL_BUFFER_SIZE - offset;
2790 }
2791 } else {
2792 /* Since rndis_wlan_craft_connected_bss() might use info
2793 * later and expects info to contain valid data if
2794 * non-null, free info and set NULL here.
2795 */
2796 kfree(info);
2797 info = NULL;
2798 }
2799 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2800 return;
2801
2802 ret = get_bssid(usbdev, bssid);
2803 if (ret < 0)
2804 memset(bssid, 0, sizeof(bssid));
2805
2806 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2807 bssid, roamed ? " roamed" : "");
2808
2809 /* Internal bss list in device should contain at least the currently
2810 * connected bss and we can get it to cfg80211 with
2811 * rndis_check_bssid_list().
2812 *
2813 * NDIS spec says: "If the device is associated, but the associated
2814 * BSSID is not in its BSSID scan list, then the driver must add an
2815 * entry for the BSSID at the end of the data that it returns in
2816 * response to query of RNDIS_OID_802_11_BSSID_LIST."
2817 *
2818 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2819 */
2820 match_bss = false;
2821 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2822
2823 if (!is_zero_ether_addr(bssid) && !match_bss) {
2824 /* Couldn't get bss from device, we need to manually craft bss
2825 * for cfg80211.
2826 */
2827 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2828 }
2829
2830 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2831 if (!roamed)
2832 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2833 req_ie_len, resp_ie,
2834 resp_ie_len, 0, GFP_KERNEL);
2835 else
2836 cfg80211_roamed(usbdev->net,
2837 get_current_channel(usbdev, NULL),
2838 bssid, req_ie, req_ie_len,
2839 resp_ie, resp_ie_len, GFP_KERNEL);
2840 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2841 cfg80211_ibss_joined(usbdev->net, bssid,
2842 get_current_channel(usbdev, NULL),
2843 GFP_KERNEL);
2844
2845 kfree(info);
2846
2847 priv->connected = true;
2848 memcpy(priv->bssid, bssid, ETH_ALEN);
2849
2850 usbnet_resume_rx(usbdev);
2851 netif_carrier_on(usbdev->net);
2852 }
2853
rndis_wlan_do_link_down_work(struct usbnet * usbdev)2854 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2855 {
2856 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2857
2858 if (priv->connected) {
2859 priv->connected = false;
2860 memset(priv->bssid, 0, ETH_ALEN);
2861
2862 deauthenticate(usbdev);
2863
2864 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2865 }
2866
2867 netif_carrier_off(usbdev->net);
2868 }
2869
rndis_wlan_worker(struct work_struct * work)2870 static void rndis_wlan_worker(struct work_struct *work)
2871 {
2872 struct rndis_wlan_private *priv =
2873 container_of(work, struct rndis_wlan_private, work);
2874 struct usbnet *usbdev = priv->usbdev;
2875
2876 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2877 rndis_wlan_do_link_up_work(usbdev);
2878
2879 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2880 rndis_wlan_do_link_down_work(usbdev);
2881
2882 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2883 set_multicast_list(usbdev);
2884 }
2885
rndis_wlan_set_multicast_list(struct net_device * dev)2886 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2887 {
2888 struct usbnet *usbdev = netdev_priv(dev);
2889 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2890
2891 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2892 return;
2893
2894 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2895 queue_work(priv->workqueue, &priv->work);
2896 }
2897
rndis_wlan_auth_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2898 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2899 struct ndis_80211_status_indication *indication,
2900 int len)
2901 {
2902 u8 *buf;
2903 const char *type;
2904 int flags, buflen, key_id;
2905 bool pairwise_error, group_error;
2906 struct ndis_80211_auth_request *auth_req;
2907 enum nl80211_key_type key_type;
2908
2909 /* must have at least one array entry */
2910 if (len < offsetof(struct ndis_80211_status_indication, u) +
2911 sizeof(struct ndis_80211_auth_request)) {
2912 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2913 len);
2914 return;
2915 }
2916
2917 buf = (void *)&indication->u.auth_request[0];
2918 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2919
2920 while (buflen >= sizeof(*auth_req)) {
2921 auth_req = (void *)buf;
2922 type = "unknown";
2923 flags = le32_to_cpu(auth_req->flags);
2924 pairwise_error = false;
2925 group_error = false;
2926
2927 if (flags & 0x1)
2928 type = "reauth request";
2929 if (flags & 0x2)
2930 type = "key update request";
2931 if (flags & 0x6) {
2932 pairwise_error = true;
2933 type = "pairwise_error";
2934 }
2935 if (flags & 0xe) {
2936 group_error = true;
2937 type = "group_error";
2938 }
2939
2940 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2941 type, le32_to_cpu(auth_req->flags));
2942
2943 if (pairwise_error) {
2944 key_type = NL80211_KEYTYPE_PAIRWISE;
2945 key_id = -1;
2946
2947 cfg80211_michael_mic_failure(usbdev->net,
2948 auth_req->bssid,
2949 key_type, key_id, NULL,
2950 GFP_KERNEL);
2951 }
2952
2953 if (group_error) {
2954 key_type = NL80211_KEYTYPE_GROUP;
2955 key_id = -1;
2956
2957 cfg80211_michael_mic_failure(usbdev->net,
2958 auth_req->bssid,
2959 key_type, key_id, NULL,
2960 GFP_KERNEL);
2961 }
2962
2963 buflen -= le32_to_cpu(auth_req->length);
2964 buf += le32_to_cpu(auth_req->length);
2965 }
2966 }
2967
rndis_wlan_pmkid_cand_list_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2968 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2969 struct ndis_80211_status_indication *indication,
2970 int len)
2971 {
2972 struct ndis_80211_pmkid_cand_list *cand_list;
2973 int list_len, expected_len, i;
2974
2975 if (len < offsetof(struct ndis_80211_status_indication, u) +
2976 sizeof(struct ndis_80211_pmkid_cand_list)) {
2977 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2978 len);
2979 return;
2980 }
2981
2982 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2983 sizeof(struct ndis_80211_pmkid_candidate);
2984 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2985 offsetof(struct ndis_80211_status_indication, u);
2986
2987 if (len < expected_len) {
2988 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2989 len, expected_len);
2990 return;
2991 }
2992
2993 cand_list = &indication->u.cand_list;
2994
2995 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2996 le32_to_cpu(cand_list->version),
2997 le32_to_cpu(cand_list->num_candidates));
2998
2999 if (le32_to_cpu(cand_list->version) != 1)
3000 return;
3001
3002 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3003 struct ndis_80211_pmkid_candidate *cand =
3004 &cand_list->candidate_list[i];
3005 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3006
3007 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3008 i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3009
3010 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3011 preauth, GFP_ATOMIC);
3012 }
3013 }
3014
rndis_wlan_media_specific_indication(struct usbnet * usbdev,struct rndis_indicate * msg,int buflen)3015 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3016 struct rndis_indicate *msg, int buflen)
3017 {
3018 struct ndis_80211_status_indication *indication;
3019 unsigned int len, offset;
3020
3021 offset = offsetof(struct rndis_indicate, status) +
3022 le32_to_cpu(msg->offset);
3023 len = le32_to_cpu(msg->length);
3024
3025 if (len < 8) {
3026 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3027 len);
3028 return;
3029 }
3030
3031 if (len > buflen || offset > buflen || offset + len > buflen) {
3032 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3033 offset + len, buflen);
3034 return;
3035 }
3036
3037 indication = (void *)((u8 *)msg + offset);
3038
3039 switch (le32_to_cpu(indication->status_type)) {
3040 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3041 netdev_info(usbdev->net, "radio state indication: %i\n",
3042 le32_to_cpu(indication->u.radio_status));
3043 return;
3044
3045 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3046 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3047 le32_to_cpu(indication->u.media_stream_mode));
3048 return;
3049
3050 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3051 rndis_wlan_auth_indication(usbdev, indication, len);
3052 return;
3053
3054 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3055 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3056 return;
3057
3058 default:
3059 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3060 le32_to_cpu(indication->status_type));
3061 }
3062 }
3063
rndis_wlan_indication(struct usbnet * usbdev,void * ind,int buflen)3064 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3065 {
3066 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3067 struct rndis_indicate *msg = ind;
3068
3069 switch (le32_to_cpu(msg->status)) {
3070 case RNDIS_STATUS_MEDIA_CONNECT:
3071 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3072 /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3073 * "media connect" indications which confuses driver
3074 * and userspace to think that device is
3075 * roaming/reassociating when it isn't.
3076 */
3077 netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3078 return;
3079 }
3080
3081 usbnet_pause_rx(usbdev);
3082
3083 netdev_info(usbdev->net, "media connect\n");
3084
3085 /* queue work to avoid recursive calls into rndis_command */
3086 set_bit(WORK_LINK_UP, &priv->work_pending);
3087 queue_work(priv->workqueue, &priv->work);
3088 break;
3089
3090 case RNDIS_STATUS_MEDIA_DISCONNECT:
3091 netdev_info(usbdev->net, "media disconnect\n");
3092
3093 /* queue work to avoid recursive calls into rndis_command */
3094 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3095 queue_work(priv->workqueue, &priv->work);
3096 break;
3097
3098 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3099 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3100 break;
3101
3102 default:
3103 netdev_info(usbdev->net, "indication: 0x%08x\n",
3104 le32_to_cpu(msg->status));
3105 break;
3106 }
3107 }
3108
rndis_wlan_get_caps(struct usbnet * usbdev,struct wiphy * wiphy)3109 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3110 {
3111 struct {
3112 __le32 num_items;
3113 __le32 items[8];
3114 } networks_supported;
3115 struct ndis_80211_capability *caps;
3116 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3117 int len, retval, i, n;
3118 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3119
3120 /* determine supported modes */
3121 len = sizeof(networks_supported);
3122 retval = rndis_query_oid(usbdev,
3123 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3124 &networks_supported, &len);
3125 if (retval >= 0) {
3126 n = le32_to_cpu(networks_supported.num_items);
3127 if (n > 8)
3128 n = 8;
3129 for (i = 0; i < n; i++) {
3130 switch (le32_to_cpu(networks_supported.items[i])) {
3131 case NDIS_80211_TYPE_FREQ_HOP:
3132 case NDIS_80211_TYPE_DIRECT_SEQ:
3133 priv->caps |= CAP_MODE_80211B;
3134 break;
3135 case NDIS_80211_TYPE_OFDM_A:
3136 priv->caps |= CAP_MODE_80211A;
3137 break;
3138 case NDIS_80211_TYPE_OFDM_G:
3139 priv->caps |= CAP_MODE_80211G;
3140 break;
3141 }
3142 }
3143 }
3144
3145 /* get device 802.11 capabilities, number of PMKIDs */
3146 caps = (struct ndis_80211_capability *)caps_buf;
3147 len = sizeof(caps_buf);
3148 retval = rndis_query_oid(usbdev,
3149 RNDIS_OID_802_11_CAPABILITY,
3150 caps, &len);
3151 if (retval >= 0) {
3152 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3153 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3154 le32_to_cpu(caps->length),
3155 le32_to_cpu(caps->version),
3156 le32_to_cpu(caps->num_pmkids),
3157 le32_to_cpu(caps->num_auth_encr_pair));
3158 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3159 } else
3160 wiphy->max_num_pmkids = 0;
3161
3162 return retval;
3163 }
3164
rndis_do_cqm(struct usbnet * usbdev,s32 rssi)3165 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3166 {
3167 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3168 enum nl80211_cqm_rssi_threshold_event event;
3169 int thold, hyst, last_event;
3170
3171 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3172 return;
3173 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3174 return;
3175
3176 last_event = priv->last_cqm_event_rssi;
3177 thold = priv->cqm_rssi_thold;
3178 hyst = priv->cqm_rssi_hyst;
3179
3180 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3181 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3182 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3183 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3184 else
3185 return;
3186
3187 priv->last_cqm_event_rssi = rssi;
3188 cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3189 }
3190
3191 #define DEVICE_POLLER_JIFFIES (HZ)
rndis_device_poller(struct work_struct * work)3192 static void rndis_device_poller(struct work_struct *work)
3193 {
3194 struct rndis_wlan_private *priv =
3195 container_of(work, struct rndis_wlan_private,
3196 dev_poller_work.work);
3197 struct usbnet *usbdev = priv->usbdev;
3198 __le32 rssi, tmp;
3199 int len, ret, j;
3200 int update_jiffies = DEVICE_POLLER_JIFFIES;
3201 void *buf;
3202
3203 /* Only check/do workaround when connected. Calling is_associated()
3204 * also polls device with rndis_command() and catches for media link
3205 * indications.
3206 */
3207 if (!is_associated(usbdev)) {
3208 /* Workaround bad scanning in BCM4320a devices with active
3209 * background scanning when not associated.
3210 */
3211 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3212 !priv->scan_request) {
3213 /* Get previous scan results */
3214 rndis_check_bssid_list(usbdev, NULL, NULL);
3215
3216 /* Initiate new scan */
3217 rndis_start_bssid_list_scan(usbdev);
3218 }
3219
3220 goto end;
3221 }
3222
3223 len = sizeof(rssi);
3224 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3225 &rssi, &len);
3226 if (ret == 0) {
3227 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3228 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3229 }
3230
3231 netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3232 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3233
3234 /* Workaround transfer stalls on poor quality links.
3235 * TODO: find right way to fix these stalls (as stalls do not happen
3236 * with ndiswrapper/windows driver). */
3237 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3238 /* Decrease stats worker interval to catch stalls.
3239 * faster. Faster than 400-500ms causes packet loss,
3240 * Slower doesn't catch stalls fast enough.
3241 */
3242 j = msecs_to_jiffies(priv->param_workaround_interval);
3243 if (j > DEVICE_POLLER_JIFFIES)
3244 j = DEVICE_POLLER_JIFFIES;
3245 else if (j <= 0)
3246 j = 1;
3247 update_jiffies = j;
3248
3249 /* Send scan OID. Use of both OIDs is required to get device
3250 * working.
3251 */
3252 tmp = cpu_to_le32(1);
3253 rndis_set_oid(usbdev,
3254 RNDIS_OID_802_11_BSSID_LIST_SCAN,
3255 &tmp, sizeof(tmp));
3256
3257 len = CONTROL_BUFFER_SIZE;
3258 buf = kmalloc(len, GFP_KERNEL);
3259 if (!buf)
3260 goto end;
3261
3262 rndis_query_oid(usbdev,
3263 RNDIS_OID_802_11_BSSID_LIST,
3264 buf, &len);
3265 kfree(buf);
3266 }
3267
3268 end:
3269 if (update_jiffies >= HZ)
3270 update_jiffies = round_jiffies_relative(update_jiffies);
3271 else {
3272 j = round_jiffies_relative(update_jiffies);
3273 if (abs(j - update_jiffies) <= 10)
3274 update_jiffies = j;
3275 }
3276
3277 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3278 update_jiffies);
3279 }
3280
3281 /*
3282 * driver/device initialization
3283 */
rndis_copy_module_params(struct usbnet * usbdev,int device_type)3284 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3285 {
3286 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3287
3288 priv->device_type = device_type;
3289
3290 priv->param_country[0] = modparam_country[0];
3291 priv->param_country[1] = modparam_country[1];
3292 priv->param_country[2] = 0;
3293 priv->param_frameburst = modparam_frameburst;
3294 priv->param_afterburner = modparam_afterburner;
3295 priv->param_power_save = modparam_power_save;
3296 priv->param_power_output = modparam_power_output;
3297 priv->param_roamtrigger = modparam_roamtrigger;
3298 priv->param_roamdelta = modparam_roamdelta;
3299
3300 priv->param_country[0] = toupper(priv->param_country[0]);
3301 priv->param_country[1] = toupper(priv->param_country[1]);
3302 /* doesn't support EU as country code, use FI instead */
3303 if (!strcmp(priv->param_country, "EU"))
3304 strcpy(priv->param_country, "FI");
3305
3306 if (priv->param_power_save < 0)
3307 priv->param_power_save = 0;
3308 else if (priv->param_power_save > 2)
3309 priv->param_power_save = 2;
3310
3311 if (priv->param_power_output < 0)
3312 priv->param_power_output = 0;
3313 else if (priv->param_power_output > 3)
3314 priv->param_power_output = 3;
3315
3316 if (priv->param_roamtrigger < -80)
3317 priv->param_roamtrigger = -80;
3318 else if (priv->param_roamtrigger > -60)
3319 priv->param_roamtrigger = -60;
3320
3321 if (priv->param_roamdelta < 0)
3322 priv->param_roamdelta = 0;
3323 else if (priv->param_roamdelta > 2)
3324 priv->param_roamdelta = 2;
3325
3326 if (modparam_workaround_interval < 0)
3327 priv->param_workaround_interval = 500;
3328 else
3329 priv->param_workaround_interval = modparam_workaround_interval;
3330 }
3331
unknown_early_init(struct usbnet * usbdev)3332 static int unknown_early_init(struct usbnet *usbdev)
3333 {
3334 /* copy module parameters for unknown so that iwconfig reports txpower
3335 * and workaround parameter is copied to private structure correctly.
3336 */
3337 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3338
3339 /* This is unknown device, so do not try set configuration parameters.
3340 */
3341
3342 return 0;
3343 }
3344
bcm4320a_early_init(struct usbnet * usbdev)3345 static int bcm4320a_early_init(struct usbnet *usbdev)
3346 {
3347 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3348 * and workaround parameter is copied to private structure correctly.
3349 */
3350 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3351
3352 /* bcm4320a doesn't handle configuration parameters well. Try
3353 * set any and you get partially zeroed mac and broken device.
3354 */
3355
3356 return 0;
3357 }
3358
bcm4320b_early_init(struct usbnet * usbdev)3359 static int bcm4320b_early_init(struct usbnet *usbdev)
3360 {
3361 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3362 char buf[8];
3363
3364 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3365
3366 /* Early initialization settings, setting these won't have effect
3367 * if called after generic_rndis_bind().
3368 */
3369
3370 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3371 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3372 priv->param_frameburst ? "1" : "0");
3373 rndis_set_config_parameter_str(usbdev, "Afterburner",
3374 priv->param_afterburner ? "1" : "0");
3375 sprintf(buf, "%d", priv->param_power_save);
3376 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3377 sprintf(buf, "%d", priv->param_power_output);
3378 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3379 sprintf(buf, "%d", priv->param_roamtrigger);
3380 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3381 sprintf(buf, "%d", priv->param_roamdelta);
3382 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3383
3384 return 0;
3385 }
3386
3387 /* same as rndis_netdev_ops but with local multicast handler */
3388 static const struct net_device_ops rndis_wlan_netdev_ops = {
3389 .ndo_open = usbnet_open,
3390 .ndo_stop = usbnet_stop,
3391 .ndo_start_xmit = usbnet_start_xmit,
3392 .ndo_tx_timeout = usbnet_tx_timeout,
3393 .ndo_set_mac_address = eth_mac_addr,
3394 .ndo_validate_addr = eth_validate_addr,
3395 .ndo_set_rx_mode = rndis_wlan_set_multicast_list,
3396 };
3397
rndis_wlan_bind(struct usbnet * usbdev,struct usb_interface * intf)3398 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3399 {
3400 struct wiphy *wiphy;
3401 struct rndis_wlan_private *priv;
3402 int retval, len;
3403 __le32 tmp;
3404
3405 /* allocate wiphy and rndis private data
3406 * NOTE: We only support a single virtual interface, so wiphy
3407 * and wireless_dev are somewhat synonymous for this device.
3408 */
3409 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3410 if (!wiphy)
3411 return -ENOMEM;
3412
3413 priv = wiphy_priv(wiphy);
3414 usbdev->net->ieee80211_ptr = &priv->wdev;
3415 priv->wdev.wiphy = wiphy;
3416 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3417
3418 /* These have to be initialized before calling generic_rndis_bind().
3419 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3420 */
3421 usbdev->driver_priv = priv;
3422 priv->usbdev = usbdev;
3423
3424 mutex_init(&priv->command_lock);
3425
3426 /* because rndis_command() sleeps we need to use workqueue */
3427 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3428 INIT_WORK(&priv->work, rndis_wlan_worker);
3429 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3430 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3431
3432 /* try bind rndis_host */
3433 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3434 if (retval < 0)
3435 goto fail;
3436
3437 /* generic_rndis_bind set packet filter to multicast_all+
3438 * promisc mode which doesn't work well for our devices (device
3439 * picks up rssi to closest station instead of to access point).
3440 *
3441 * rndis_host wants to avoid all OID as much as possible
3442 * so do promisc/multicast handling in rndis_wlan.
3443 */
3444 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3445
3446 tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3447 retval = rndis_set_oid(usbdev,
3448 RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3449 &tmp, sizeof(tmp));
3450
3451 len = sizeof(tmp);
3452 retval = rndis_query_oid(usbdev,
3453 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3454 &tmp, &len);
3455 priv->multicast_size = le32_to_cpu(tmp);
3456 if (retval < 0 || priv->multicast_size < 0)
3457 priv->multicast_size = 0;
3458 if (priv->multicast_size > 0)
3459 usbdev->net->flags |= IFF_MULTICAST;
3460 else
3461 usbdev->net->flags &= ~IFF_MULTICAST;
3462
3463 /* fill-out wiphy structure and register w/ cfg80211 */
3464 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3465 wiphy->privid = rndis_wiphy_privid;
3466 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3467 | BIT(NL80211_IFTYPE_ADHOC);
3468 wiphy->max_scan_ssids = 1;
3469
3470 /* TODO: fill-out band/encr information based on priv->caps */
3471 rndis_wlan_get_caps(usbdev, wiphy);
3472
3473 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3474 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3475 priv->band.channels = priv->channels;
3476 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3477 priv->band.bitrates = priv->rates;
3478 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3479 wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3480 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3481
3482 memcpy(priv->cipher_suites, rndis_cipher_suites,
3483 sizeof(rndis_cipher_suites));
3484 wiphy->cipher_suites = priv->cipher_suites;
3485 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3486
3487 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3488
3489 if (wiphy_register(wiphy)) {
3490 retval = -ENODEV;
3491 goto fail;
3492 }
3493
3494 set_default_iw_params(usbdev);
3495
3496 priv->power_mode = -1;
3497
3498 /* set default rts/frag */
3499 rndis_set_wiphy_params(wiphy,
3500 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3501
3502 /* turn radio off on init */
3503 priv->radio_on = false;
3504 disassociate(usbdev, false);
3505 netif_carrier_off(usbdev->net);
3506
3507 return 0;
3508
3509 fail:
3510 cancel_delayed_work_sync(&priv->dev_poller_work);
3511 cancel_delayed_work_sync(&priv->scan_work);
3512 cancel_work_sync(&priv->work);
3513 flush_workqueue(priv->workqueue);
3514 destroy_workqueue(priv->workqueue);
3515
3516 wiphy_free(wiphy);
3517 return retval;
3518 }
3519
rndis_wlan_unbind(struct usbnet * usbdev,struct usb_interface * intf)3520 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3521 {
3522 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3523
3524 /* turn radio off */
3525 disassociate(usbdev, false);
3526
3527 cancel_delayed_work_sync(&priv->dev_poller_work);
3528 cancel_delayed_work_sync(&priv->scan_work);
3529 cancel_work_sync(&priv->work);
3530 flush_workqueue(priv->workqueue);
3531 destroy_workqueue(priv->workqueue);
3532
3533 rndis_unbind(usbdev, intf);
3534
3535 wiphy_unregister(priv->wdev.wiphy);
3536 wiphy_free(priv->wdev.wiphy);
3537 }
3538
rndis_wlan_reset(struct usbnet * usbdev)3539 static int rndis_wlan_reset(struct usbnet *usbdev)
3540 {
3541 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3542 int retval;
3543
3544 netdev_dbg(usbdev->net, "%s()\n", __func__);
3545
3546 retval = rndis_reset(usbdev);
3547 if (retval)
3548 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3549
3550 /* rndis_reset cleared multicast list, so restore here.
3551 (set_multicast_list() also turns on current packet filter) */
3552 set_multicast_list(usbdev);
3553
3554 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3555 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3556
3557 return deauthenticate(usbdev);
3558 }
3559
rndis_wlan_stop(struct usbnet * usbdev)3560 static int rndis_wlan_stop(struct usbnet *usbdev)
3561 {
3562 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3563 int retval;
3564 __le32 filter;
3565
3566 netdev_dbg(usbdev->net, "%s()\n", __func__);
3567
3568 retval = disassociate(usbdev, false);
3569
3570 priv->work_pending = 0;
3571 cancel_delayed_work_sync(&priv->dev_poller_work);
3572 cancel_delayed_work_sync(&priv->scan_work);
3573 cancel_work_sync(&priv->work);
3574 flush_workqueue(priv->workqueue);
3575
3576 if (priv->scan_request) {
3577 cfg80211_scan_done(priv->scan_request, true);
3578 priv->scan_request = NULL;
3579 }
3580
3581 /* Set current packet filter zero to block receiving data packets from
3582 device. */
3583 filter = 0;
3584 rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3585 sizeof(filter));
3586
3587 return retval;
3588 }
3589
3590 static const struct driver_info bcm4320b_info = {
3591 .description = "Wireless RNDIS device, BCM4320b based",
3592 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3593 FLAG_AVOID_UNLINK_URBS,
3594 .bind = rndis_wlan_bind,
3595 .unbind = rndis_wlan_unbind,
3596 .status = rndis_status,
3597 .rx_fixup = rndis_rx_fixup,
3598 .tx_fixup = rndis_tx_fixup,
3599 .reset = rndis_wlan_reset,
3600 .stop = rndis_wlan_stop,
3601 .early_init = bcm4320b_early_init,
3602 .indication = rndis_wlan_indication,
3603 };
3604
3605 static const struct driver_info bcm4320a_info = {
3606 .description = "Wireless RNDIS device, BCM4320a based",
3607 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3608 FLAG_AVOID_UNLINK_URBS,
3609 .bind = rndis_wlan_bind,
3610 .unbind = rndis_wlan_unbind,
3611 .status = rndis_status,
3612 .rx_fixup = rndis_rx_fixup,
3613 .tx_fixup = rndis_tx_fixup,
3614 .reset = rndis_wlan_reset,
3615 .stop = rndis_wlan_stop,
3616 .early_init = bcm4320a_early_init,
3617 .indication = rndis_wlan_indication,
3618 };
3619
3620 static const struct driver_info rndis_wlan_info = {
3621 .description = "Wireless RNDIS device",
3622 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3623 FLAG_AVOID_UNLINK_URBS,
3624 .bind = rndis_wlan_bind,
3625 .unbind = rndis_wlan_unbind,
3626 .status = rndis_status,
3627 .rx_fixup = rndis_rx_fixup,
3628 .tx_fixup = rndis_tx_fixup,
3629 .reset = rndis_wlan_reset,
3630 .stop = rndis_wlan_stop,
3631 .early_init = unknown_early_init,
3632 .indication = rndis_wlan_indication,
3633 };
3634
3635 /*-------------------------------------------------------------------------*/
3636
3637 static const struct usb_device_id products [] = {
3638 #define RNDIS_MASTER_INTERFACE \
3639 .bInterfaceClass = USB_CLASS_COMM, \
3640 .bInterfaceSubClass = 2 /* ACM */, \
3641 .bInterfaceProtocol = 0x0ff
3642
3643 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3644 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3645 */
3646 {
3647 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3648 | USB_DEVICE_ID_MATCH_DEVICE,
3649 .idVendor = 0x0411,
3650 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3651 RNDIS_MASTER_INTERFACE,
3652 .driver_info = (unsigned long) &bcm4320b_info,
3653 }, {
3654 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3655 | USB_DEVICE_ID_MATCH_DEVICE,
3656 .idVendor = 0x0baf,
3657 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3658 RNDIS_MASTER_INTERFACE,
3659 .driver_info = (unsigned long) &bcm4320b_info,
3660 }, {
3661 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3662 | USB_DEVICE_ID_MATCH_DEVICE,
3663 .idVendor = 0x050d,
3664 .idProduct = 0x011b, /* Belkin F5D7051 */
3665 RNDIS_MASTER_INTERFACE,
3666 .driver_info = (unsigned long) &bcm4320b_info,
3667 }, {
3668 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3669 | USB_DEVICE_ID_MATCH_DEVICE,
3670 .idVendor = 0x1799, /* Belkin has two vendor ids */
3671 .idProduct = 0x011b, /* Belkin F5D7051 */
3672 RNDIS_MASTER_INTERFACE,
3673 .driver_info = (unsigned long) &bcm4320b_info,
3674 }, {
3675 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3676 | USB_DEVICE_ID_MATCH_DEVICE,
3677 .idVendor = 0x13b1,
3678 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3679 RNDIS_MASTER_INTERFACE,
3680 .driver_info = (unsigned long) &bcm4320b_info,
3681 }, {
3682 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3683 | USB_DEVICE_ID_MATCH_DEVICE,
3684 .idVendor = 0x13b1,
3685 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3686 RNDIS_MASTER_INTERFACE,
3687 .driver_info = (unsigned long) &bcm4320b_info,
3688 }, {
3689 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3690 | USB_DEVICE_ID_MATCH_DEVICE,
3691 .idVendor = 0x0b05,
3692 .idProduct = 0x1717, /* Asus WL169gE */
3693 RNDIS_MASTER_INTERFACE,
3694 .driver_info = (unsigned long) &bcm4320b_info,
3695 }, {
3696 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3697 | USB_DEVICE_ID_MATCH_DEVICE,
3698 .idVendor = 0x0a5c,
3699 .idProduct = 0xd11b, /* Eminent EM4045 */
3700 RNDIS_MASTER_INTERFACE,
3701 .driver_info = (unsigned long) &bcm4320b_info,
3702 }, {
3703 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3704 | USB_DEVICE_ID_MATCH_DEVICE,
3705 .idVendor = 0x1690,
3706 .idProduct = 0x0715, /* BT Voyager 1055 */
3707 RNDIS_MASTER_INTERFACE,
3708 .driver_info = (unsigned long) &bcm4320b_info,
3709 },
3710 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3711 * parameters available, hardware probably contain older firmware version with
3712 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3713 */
3714 {
3715 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3716 | USB_DEVICE_ID_MATCH_DEVICE,
3717 .idVendor = 0x13b1,
3718 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3719 RNDIS_MASTER_INTERFACE,
3720 .driver_info = (unsigned long) &bcm4320a_info,
3721 }, {
3722 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3723 | USB_DEVICE_ID_MATCH_DEVICE,
3724 .idVendor = 0x0baf,
3725 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3726 RNDIS_MASTER_INTERFACE,
3727 .driver_info = (unsigned long) &bcm4320a_info,
3728 }, {
3729 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3730 | USB_DEVICE_ID_MATCH_DEVICE,
3731 .idVendor = 0x0411,
3732 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3733 RNDIS_MASTER_INTERFACE,
3734 .driver_info = (unsigned long) &bcm4320a_info,
3735 },
3736 /* Generic Wireless RNDIS devices that we don't have exact
3737 * idVendor/idProduct/chip yet.
3738 */
3739 {
3740 /* RNDIS is MSFT's un-official variant of CDC ACM */
3741 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3742 .driver_info = (unsigned long) &rndis_wlan_info,
3743 }, {
3744 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3745 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3746 .driver_info = (unsigned long) &rndis_wlan_info,
3747 },
3748 { }, // END
3749 };
3750 MODULE_DEVICE_TABLE(usb, products);
3751
3752 static struct usb_driver rndis_wlan_driver = {
3753 .name = "rndis_wlan",
3754 .id_table = products,
3755 .probe = usbnet_probe,
3756 .disconnect = usbnet_disconnect,
3757 .suspend = usbnet_suspend,
3758 .resume = usbnet_resume,
3759 .disable_hub_initiated_lpm = 1,
3760 };
3761
3762 module_usb_driver(rndis_wlan_driver);
3763
3764 MODULE_AUTHOR("Bjorge Dijkstra");
3765 MODULE_AUTHOR("Jussi Kivilinna");
3766 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3767 MODULE_LICENSE("GPL");
3768
3769