1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Driver for RNDIS based wireless USB devices.
4 *
5 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
6 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi>
7 *
8 * Portions of this file are based on NDISwrapper project,
9 * Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
10 * http://ndiswrapper.sourceforge.net/
11 */
12
13 // #define DEBUG // error path messages, extra info
14 // #define VERBOSE // more; success messages
15
16 #include <linux/module.h>
17 #include <linux/netdevice.h>
18 #include <linux/etherdevice.h>
19 #include <linux/ethtool.h>
20 #include <linux/workqueue.h>
21 #include <linux/mutex.h>
22 #include <linux/mii.h>
23 #include <linux/usb.h>
24 #include <linux/usb/cdc.h>
25 #include <linux/ieee80211.h>
26 #include <linux/if_arp.h>
27 #include <linux/ctype.h>
28 #include <linux/spinlock.h>
29 #include <linux/slab.h>
30 #include <net/cfg80211.h>
31 #include <linux/usb/usbnet.h>
32 #include <linux/usb/rndis_host.h>
33
34
35 /* NOTE: All these are settings for Broadcom chipset */
36 static char modparam_country[4] = "EU";
37 module_param_string(country, modparam_country, 4, 0444);
38 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
39
40 static int modparam_frameburst = 1;
41 module_param_named(frameburst, modparam_frameburst, int, 0444);
42 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
43
44 static int modparam_afterburner = 0;
45 module_param_named(afterburner, modparam_afterburner, int, 0444);
46 MODULE_PARM_DESC(afterburner,
47 "enable afterburner aka '125 High Speed Mode' (default: off)");
48
49 static int modparam_power_save = 0;
50 module_param_named(power_save, modparam_power_save, int, 0444);
51 MODULE_PARM_DESC(power_save,
52 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
53
54 static int modparam_power_output = 3;
55 module_param_named(power_output, modparam_power_output, int, 0444);
56 MODULE_PARM_DESC(power_output,
57 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
58
59 static int modparam_roamtrigger = -70;
60 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
61 MODULE_PARM_DESC(roamtrigger,
62 "set roaming dBm trigger: -80=optimize for distance, "
63 "-60=bandwidth (default: -70)");
64
65 static int modparam_roamdelta = 1;
66 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
67 MODULE_PARM_DESC(roamdelta,
68 "set roaming tendency: 0=aggressive, 1=moderate, "
69 "2=conservative (default: moderate)");
70
71 static int modparam_workaround_interval;
72 module_param_named(workaround_interval, modparam_workaround_interval,
73 int, 0444);
74 MODULE_PARM_DESC(workaround_interval,
75 "set stall workaround interval in msecs (0=disabled) (default: 0)");
76
77 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
78 #define WL_NOISE -96 /* typical noise level in dBm */
79 #define WL_SIGMAX -32 /* typical maximum signal level in dBm */
80
81
82 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
83 * based on wireless rndis) has default txpower of 13dBm.
84 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
85 * 100% : 20 mW ~ 13dBm
86 * 75% : 15 mW ~ 12dBm
87 * 50% : 10 mW ~ 10dBm
88 * 25% : 5 mW ~ 7dBm
89 */
90 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
91 #define BCM4320_DEFAULT_TXPOWER_DBM_75 12
92 #define BCM4320_DEFAULT_TXPOWER_DBM_50 10
93 #define BCM4320_DEFAULT_TXPOWER_DBM_25 7
94
95 /* Known device types */
96 #define RNDIS_UNKNOWN 0
97 #define RNDIS_BCM4320A 1
98 #define RNDIS_BCM4320B 2
99
100
101 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
102 * slightly modified for datatype endianess, etc
103 */
104 #define NDIS_802_11_LENGTH_SSID 32
105 #define NDIS_802_11_LENGTH_RATES 8
106 #define NDIS_802_11_LENGTH_RATES_EX 16
107
108 enum ndis_80211_net_type {
109 NDIS_80211_TYPE_FREQ_HOP,
110 NDIS_80211_TYPE_DIRECT_SEQ,
111 NDIS_80211_TYPE_OFDM_A,
112 NDIS_80211_TYPE_OFDM_G
113 };
114
115 enum ndis_80211_net_infra {
116 NDIS_80211_INFRA_ADHOC,
117 NDIS_80211_INFRA_INFRA,
118 NDIS_80211_INFRA_AUTO_UNKNOWN
119 };
120
121 enum ndis_80211_auth_mode {
122 NDIS_80211_AUTH_OPEN,
123 NDIS_80211_AUTH_SHARED,
124 NDIS_80211_AUTH_AUTO_SWITCH,
125 NDIS_80211_AUTH_WPA,
126 NDIS_80211_AUTH_WPA_PSK,
127 NDIS_80211_AUTH_WPA_NONE,
128 NDIS_80211_AUTH_WPA2,
129 NDIS_80211_AUTH_WPA2_PSK
130 };
131
132 enum ndis_80211_encr_status {
133 NDIS_80211_ENCR_WEP_ENABLED,
134 NDIS_80211_ENCR_DISABLED,
135 NDIS_80211_ENCR_WEP_KEY_ABSENT,
136 NDIS_80211_ENCR_NOT_SUPPORTED,
137 NDIS_80211_ENCR_TKIP_ENABLED,
138 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
139 NDIS_80211_ENCR_CCMP_ENABLED,
140 NDIS_80211_ENCR_CCMP_KEY_ABSENT
141 };
142
143 enum ndis_80211_priv_filter {
144 NDIS_80211_PRIV_ACCEPT_ALL,
145 NDIS_80211_PRIV_8021X_WEP
146 };
147
148 enum ndis_80211_status_type {
149 NDIS_80211_STATUSTYPE_AUTHENTICATION,
150 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
151 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
152 NDIS_80211_STATUSTYPE_RADIOSTATE,
153 };
154
155 enum ndis_80211_media_stream_mode {
156 NDIS_80211_MEDIA_STREAM_OFF,
157 NDIS_80211_MEDIA_STREAM_ON
158 };
159
160 enum ndis_80211_radio_status {
161 NDIS_80211_RADIO_STATUS_ON,
162 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
163 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
164 };
165
166 enum ndis_80211_addkey_bits {
167 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
168 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
169 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
170 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
171 };
172
173 enum ndis_80211_addwep_bits {
174 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
175 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
176 };
177
178 enum ndis_80211_power_mode {
179 NDIS_80211_POWER_MODE_CAM,
180 NDIS_80211_POWER_MODE_MAX_PSP,
181 NDIS_80211_POWER_MODE_FAST_PSP,
182 };
183
184 enum ndis_80211_pmkid_cand_list_flag_bits {
185 NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
186 };
187
188 struct ndis_80211_auth_request {
189 __le32 length;
190 u8 bssid[ETH_ALEN];
191 u8 padding[2];
192 __le32 flags;
193 } __packed;
194
195 struct ndis_80211_pmkid_candidate {
196 u8 bssid[ETH_ALEN];
197 u8 padding[2];
198 __le32 flags;
199 } __packed;
200
201 struct ndis_80211_pmkid_cand_list {
202 __le32 version;
203 __le32 num_candidates;
204 struct ndis_80211_pmkid_candidate candidate_list[0];
205 } __packed;
206
207 struct ndis_80211_status_indication {
208 __le32 status_type;
209 union {
210 __le32 media_stream_mode;
211 __le32 radio_status;
212 struct ndis_80211_auth_request auth_request[0];
213 struct ndis_80211_pmkid_cand_list cand_list;
214 } u;
215 } __packed;
216
217 struct ndis_80211_ssid {
218 __le32 length;
219 u8 essid[NDIS_802_11_LENGTH_SSID];
220 } __packed;
221
222 struct ndis_80211_conf_freq_hop {
223 __le32 length;
224 __le32 hop_pattern;
225 __le32 hop_set;
226 __le32 dwell_time;
227 } __packed;
228
229 struct ndis_80211_conf {
230 __le32 length;
231 __le32 beacon_period;
232 __le32 atim_window;
233 __le32 ds_config;
234 struct ndis_80211_conf_freq_hop fh_config;
235 } __packed;
236
237 struct ndis_80211_bssid_ex {
238 __le32 length;
239 u8 mac[ETH_ALEN];
240 u8 padding[2];
241 struct ndis_80211_ssid ssid;
242 __le32 privacy;
243 __le32 rssi;
244 __le32 net_type;
245 struct ndis_80211_conf config;
246 __le32 net_infra;
247 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
248 __le32 ie_length;
249 u8 ies[0];
250 } __packed;
251
252 struct ndis_80211_bssid_list_ex {
253 __le32 num_items;
254 struct ndis_80211_bssid_ex bssid[0];
255 } __packed;
256
257 struct ndis_80211_fixed_ies {
258 u8 timestamp[8];
259 __le16 beacon_interval;
260 __le16 capabilities;
261 } __packed;
262
263 struct ndis_80211_wep_key {
264 __le32 size;
265 __le32 index;
266 __le32 length;
267 u8 material[32];
268 } __packed;
269
270 struct ndis_80211_key {
271 __le32 size;
272 __le32 index;
273 __le32 length;
274 u8 bssid[ETH_ALEN];
275 u8 padding[6];
276 u8 rsc[8];
277 u8 material[32];
278 } __packed;
279
280 struct ndis_80211_remove_key {
281 __le32 size;
282 __le32 index;
283 u8 bssid[ETH_ALEN];
284 u8 padding[2];
285 } __packed;
286
287 struct ndis_config_param {
288 __le32 name_offs;
289 __le32 name_length;
290 __le32 type;
291 __le32 value_offs;
292 __le32 value_length;
293 } __packed;
294
295 struct ndis_80211_assoc_info {
296 __le32 length;
297 __le16 req_ies;
298 struct req_ie {
299 __le16 capa;
300 __le16 listen_interval;
301 u8 cur_ap_address[ETH_ALEN];
302 } req_ie;
303 __le32 req_ie_length;
304 __le32 offset_req_ies;
305 __le16 resp_ies;
306 struct resp_ie {
307 __le16 capa;
308 __le16 status_code;
309 __le16 assoc_id;
310 } resp_ie;
311 __le32 resp_ie_length;
312 __le32 offset_resp_ies;
313 } __packed;
314
315 struct ndis_80211_auth_encr_pair {
316 __le32 auth_mode;
317 __le32 encr_mode;
318 } __packed;
319
320 struct ndis_80211_capability {
321 __le32 length;
322 __le32 version;
323 __le32 num_pmkids;
324 __le32 num_auth_encr_pair;
325 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
326 } __packed;
327
328 struct ndis_80211_bssid_info {
329 u8 bssid[ETH_ALEN];
330 u8 pmkid[16];
331 } __packed;
332
333 struct ndis_80211_pmkid {
334 __le32 length;
335 __le32 bssid_info_count;
336 struct ndis_80211_bssid_info bssid_info[0];
337 } __packed;
338
339 /*
340 * private data
341 */
342 #define CAP_MODE_80211A 1
343 #define CAP_MODE_80211B 2
344 #define CAP_MODE_80211G 4
345 #define CAP_MODE_MASK 7
346
347 #define WORK_LINK_UP 0
348 #define WORK_LINK_DOWN 1
349 #define WORK_SET_MULTICAST_LIST 2
350
351 #define RNDIS_WLAN_ALG_NONE 0
352 #define RNDIS_WLAN_ALG_WEP (1<<0)
353 #define RNDIS_WLAN_ALG_TKIP (1<<1)
354 #define RNDIS_WLAN_ALG_CCMP (1<<2)
355
356 #define RNDIS_WLAN_NUM_KEYS 4
357 #define RNDIS_WLAN_KEY_MGMT_NONE 0
358 #define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
359 #define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
360
361 #define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
362
363 static const struct ieee80211_channel rndis_channels[] = {
364 { .center_freq = 2412 },
365 { .center_freq = 2417 },
366 { .center_freq = 2422 },
367 { .center_freq = 2427 },
368 { .center_freq = 2432 },
369 { .center_freq = 2437 },
370 { .center_freq = 2442 },
371 { .center_freq = 2447 },
372 { .center_freq = 2452 },
373 { .center_freq = 2457 },
374 { .center_freq = 2462 },
375 { .center_freq = 2467 },
376 { .center_freq = 2472 },
377 { .center_freq = 2484 },
378 };
379
380 static const struct ieee80211_rate rndis_rates[] = {
381 { .bitrate = 10 },
382 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
383 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
384 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
385 { .bitrate = 60 },
386 { .bitrate = 90 },
387 { .bitrate = 120 },
388 { .bitrate = 180 },
389 { .bitrate = 240 },
390 { .bitrate = 360 },
391 { .bitrate = 480 },
392 { .bitrate = 540 }
393 };
394
395 static const u32 rndis_cipher_suites[] = {
396 WLAN_CIPHER_SUITE_WEP40,
397 WLAN_CIPHER_SUITE_WEP104,
398 WLAN_CIPHER_SUITE_TKIP,
399 WLAN_CIPHER_SUITE_CCMP,
400 };
401
402 struct rndis_wlan_encr_key {
403 int len;
404 u32 cipher;
405 u8 material[32];
406 u8 bssid[ETH_ALEN];
407 bool pairwise;
408 bool tx_key;
409 };
410
411 /* RNDIS device private data */
412 struct rndis_wlan_private {
413 struct usbnet *usbdev;
414
415 struct wireless_dev wdev;
416
417 struct cfg80211_scan_request *scan_request;
418
419 struct workqueue_struct *workqueue;
420 struct delayed_work dev_poller_work;
421 struct delayed_work scan_work;
422 struct work_struct work;
423 struct mutex command_lock;
424 unsigned long work_pending;
425 int last_qual;
426 s32 cqm_rssi_thold;
427 u32 cqm_rssi_hyst;
428 int last_cqm_event_rssi;
429
430 struct ieee80211_supported_band band;
431 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
432 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
433 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
434
435 int device_type;
436 int caps;
437 int multicast_size;
438
439 /* module parameters */
440 char param_country[4];
441 int param_frameburst;
442 int param_afterburner;
443 int param_power_save;
444 int param_power_output;
445 int param_roamtrigger;
446 int param_roamdelta;
447 u32 param_workaround_interval;
448
449 /* hardware state */
450 bool radio_on;
451 int power_mode;
452 int infra_mode;
453 bool connected;
454 u8 bssid[ETH_ALEN];
455 u32 current_command_oid;
456
457 /* encryption stuff */
458 u8 encr_tx_key_index;
459 struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
460 int wpa_version;
461
462 u8 command_buffer[COMMAND_BUFFER_SIZE];
463 };
464
465 /*
466 * cfg80211 ops
467 */
468 static int rndis_change_virtual_intf(struct wiphy *wiphy,
469 struct net_device *dev,
470 enum nl80211_iftype type,
471 struct vif_params *params);
472
473 static int rndis_scan(struct wiphy *wiphy,
474 struct cfg80211_scan_request *request);
475
476 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
477
478 static int rndis_set_tx_power(struct wiphy *wiphy,
479 struct wireless_dev *wdev,
480 enum nl80211_tx_power_setting type,
481 int mbm);
482 static int rndis_get_tx_power(struct wiphy *wiphy,
483 struct wireless_dev *wdev,
484 int *dbm);
485
486 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
487 struct cfg80211_connect_params *sme);
488
489 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
490 u16 reason_code);
491
492 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
493 struct cfg80211_ibss_params *params);
494
495 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
496
497 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
498 u8 key_index, bool pairwise, const u8 *mac_addr,
499 struct key_params *params);
500
501 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
502 u8 key_index, bool pairwise, const u8 *mac_addr);
503
504 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
505 u8 key_index, bool unicast, bool multicast);
506
507 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
508 const u8 *mac, struct station_info *sinfo);
509
510 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
511 int idx, u8 *mac, struct station_info *sinfo);
512
513 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
514 struct cfg80211_pmksa *pmksa);
515
516 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
517 struct cfg80211_pmksa *pmksa);
518
519 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
520
521 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
522 bool enabled, int timeout);
523
524 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
525 struct net_device *dev,
526 s32 rssi_thold, u32 rssi_hyst);
527
528 static const struct cfg80211_ops rndis_config_ops = {
529 .change_virtual_intf = rndis_change_virtual_intf,
530 .scan = rndis_scan,
531 .set_wiphy_params = rndis_set_wiphy_params,
532 .set_tx_power = rndis_set_tx_power,
533 .get_tx_power = rndis_get_tx_power,
534 .connect = rndis_connect,
535 .disconnect = rndis_disconnect,
536 .join_ibss = rndis_join_ibss,
537 .leave_ibss = rndis_leave_ibss,
538 .add_key = rndis_add_key,
539 .del_key = rndis_del_key,
540 .set_default_key = rndis_set_default_key,
541 .get_station = rndis_get_station,
542 .dump_station = rndis_dump_station,
543 .set_pmksa = rndis_set_pmksa,
544 .del_pmksa = rndis_del_pmksa,
545 .flush_pmksa = rndis_flush_pmksa,
546 .set_power_mgmt = rndis_set_power_mgmt,
547 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
548 };
549
550 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
551
552
get_rndis_wlan_priv(struct usbnet * dev)553 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
554 {
555 return (struct rndis_wlan_private *)dev->driver_priv;
556 }
557
get_bcm4320_power_dbm(struct rndis_wlan_private * priv)558 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
559 {
560 switch (priv->param_power_output) {
561 default:
562 case 3:
563 return BCM4320_DEFAULT_TXPOWER_DBM_100;
564 case 2:
565 return BCM4320_DEFAULT_TXPOWER_DBM_75;
566 case 1:
567 return BCM4320_DEFAULT_TXPOWER_DBM_50;
568 case 0:
569 return BCM4320_DEFAULT_TXPOWER_DBM_25;
570 }
571 }
572
is_wpa_key(struct rndis_wlan_private * priv,u8 idx)573 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
574 {
575 int cipher = priv->encr_keys[idx].cipher;
576
577 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
578 cipher == WLAN_CIPHER_SUITE_TKIP);
579 }
580
rndis_cipher_to_alg(u32 cipher)581 static int rndis_cipher_to_alg(u32 cipher)
582 {
583 switch (cipher) {
584 default:
585 return RNDIS_WLAN_ALG_NONE;
586 case WLAN_CIPHER_SUITE_WEP40:
587 case WLAN_CIPHER_SUITE_WEP104:
588 return RNDIS_WLAN_ALG_WEP;
589 case WLAN_CIPHER_SUITE_TKIP:
590 return RNDIS_WLAN_ALG_TKIP;
591 case WLAN_CIPHER_SUITE_CCMP:
592 return RNDIS_WLAN_ALG_CCMP;
593 }
594 }
595
rndis_akm_suite_to_key_mgmt(u32 akm_suite)596 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
597 {
598 switch (akm_suite) {
599 default:
600 return RNDIS_WLAN_KEY_MGMT_NONE;
601 case WLAN_AKM_SUITE_8021X:
602 return RNDIS_WLAN_KEY_MGMT_802_1X;
603 case WLAN_AKM_SUITE_PSK:
604 return RNDIS_WLAN_KEY_MGMT_PSK;
605 }
606 }
607
608 #ifdef DEBUG
oid_to_string(u32 oid)609 static const char *oid_to_string(u32 oid)
610 {
611 switch (oid) {
612 #define OID_STR(oid) case oid: return(#oid)
613 /* from rndis_host.h */
614 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
615 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
616 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
617 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
618
619 /* from rndis_wlan.c */
620 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
621 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
622
623 OID_STR(RNDIS_OID_GEN_XMIT_OK);
624 OID_STR(RNDIS_OID_GEN_RCV_OK);
625 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
626 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
627 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
628
629 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
630 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
631 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
632
633 OID_STR(RNDIS_OID_802_11_BSSID);
634 OID_STR(RNDIS_OID_802_11_SSID);
635 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
636 OID_STR(RNDIS_OID_802_11_ADD_WEP);
637 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
638 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
639 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
640 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
641 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
642 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
643 OID_STR(RNDIS_OID_802_11_ADD_KEY);
644 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
645 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
646 OID_STR(RNDIS_OID_802_11_CAPABILITY);
647 OID_STR(RNDIS_OID_802_11_PMKID);
648 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
649 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
650 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
651 OID_STR(RNDIS_OID_802_11_RSSI);
652 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
653 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
654 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
655 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
656 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
657 OID_STR(RNDIS_OID_802_11_POWER_MODE);
658 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
659 #undef OID_STR
660 }
661
662 return "?";
663 }
664 #else
oid_to_string(u32 oid)665 static const char *oid_to_string(u32 oid)
666 {
667 return "?";
668 }
669 #endif
670
671 /* translate error code */
rndis_error_status(__le32 rndis_status)672 static int rndis_error_status(__le32 rndis_status)
673 {
674 int ret = -EINVAL;
675 switch (le32_to_cpu(rndis_status)) {
676 case RNDIS_STATUS_SUCCESS:
677 ret = 0;
678 break;
679 case RNDIS_STATUS_FAILURE:
680 case RNDIS_STATUS_INVALID_DATA:
681 ret = -EINVAL;
682 break;
683 case RNDIS_STATUS_NOT_SUPPORTED:
684 ret = -EOPNOTSUPP;
685 break;
686 case RNDIS_STATUS_ADAPTER_NOT_READY:
687 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
688 ret = -EBUSY;
689 break;
690 }
691 return ret;
692 }
693
rndis_query_oid(struct usbnet * dev,u32 oid,void * data,int * len)694 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
695 {
696 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
697 union {
698 void *buf;
699 struct rndis_msg_hdr *header;
700 struct rndis_query *get;
701 struct rndis_query_c *get_c;
702 } u;
703 int ret, buflen;
704 int resplen, respoffs, copylen;
705
706 buflen = *len + sizeof(*u.get);
707 if (buflen < CONTROL_BUFFER_SIZE)
708 buflen = CONTROL_BUFFER_SIZE;
709
710 if (buflen > COMMAND_BUFFER_SIZE) {
711 u.buf = kmalloc(buflen, GFP_KERNEL);
712 if (!u.buf)
713 return -ENOMEM;
714 } else {
715 u.buf = priv->command_buffer;
716 }
717
718 mutex_lock(&priv->command_lock);
719
720 memset(u.get, 0, sizeof *u.get);
721 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
722 u.get->msg_len = cpu_to_le32(sizeof *u.get);
723 u.get->oid = cpu_to_le32(oid);
724
725 priv->current_command_oid = oid;
726 ret = rndis_command(dev, u.header, buflen);
727 priv->current_command_oid = 0;
728 if (ret < 0)
729 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
730 __func__, oid_to_string(oid), ret,
731 le32_to_cpu(u.get_c->status));
732
733 if (ret == 0) {
734 resplen = le32_to_cpu(u.get_c->len);
735 respoffs = le32_to_cpu(u.get_c->offset) + 8;
736
737 if (respoffs > buflen) {
738 /* Device returned data offset outside buffer, error. */
739 netdev_dbg(dev->net, "%s(%s): received invalid "
740 "data offset: %d > %d\n", __func__,
741 oid_to_string(oid), respoffs, buflen);
742
743 ret = -EINVAL;
744 goto exit_unlock;
745 }
746
747 if ((resplen + respoffs) > buflen) {
748 /* Device would have returned more data if buffer would
749 * have been big enough. Copy just the bits that we got.
750 */
751 copylen = buflen - respoffs;
752 } else {
753 copylen = resplen;
754 }
755
756 if (copylen > *len)
757 copylen = *len;
758
759 memcpy(data, u.buf + respoffs, copylen);
760
761 *len = resplen;
762
763 ret = rndis_error_status(u.get_c->status);
764 if (ret < 0)
765 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
766 __func__, oid_to_string(oid),
767 le32_to_cpu(u.get_c->status), ret);
768 }
769
770 exit_unlock:
771 mutex_unlock(&priv->command_lock);
772
773 if (u.buf != priv->command_buffer)
774 kfree(u.buf);
775 return ret;
776 }
777
rndis_set_oid(struct usbnet * dev,u32 oid,const void * data,int len)778 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
779 int len)
780 {
781 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
782 union {
783 void *buf;
784 struct rndis_msg_hdr *header;
785 struct rndis_set *set;
786 struct rndis_set_c *set_c;
787 } u;
788 int ret, buflen;
789
790 buflen = len + sizeof(*u.set);
791 if (buflen < CONTROL_BUFFER_SIZE)
792 buflen = CONTROL_BUFFER_SIZE;
793
794 if (buflen > COMMAND_BUFFER_SIZE) {
795 u.buf = kmalloc(buflen, GFP_KERNEL);
796 if (!u.buf)
797 return -ENOMEM;
798 } else {
799 u.buf = priv->command_buffer;
800 }
801
802 mutex_lock(&priv->command_lock);
803
804 memset(u.set, 0, sizeof *u.set);
805 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
806 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
807 u.set->oid = cpu_to_le32(oid);
808 u.set->len = cpu_to_le32(len);
809 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
810 u.set->handle = cpu_to_le32(0);
811 memcpy(u.buf + sizeof(*u.set), data, len);
812
813 priv->current_command_oid = oid;
814 ret = rndis_command(dev, u.header, buflen);
815 priv->current_command_oid = 0;
816 if (ret < 0)
817 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
818 __func__, oid_to_string(oid), ret,
819 le32_to_cpu(u.set_c->status));
820
821 if (ret == 0) {
822 ret = rndis_error_status(u.set_c->status);
823
824 if (ret < 0)
825 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
826 __func__, oid_to_string(oid),
827 le32_to_cpu(u.set_c->status), ret);
828 }
829
830 mutex_unlock(&priv->command_lock);
831
832 if (u.buf != priv->command_buffer)
833 kfree(u.buf);
834 return ret;
835 }
836
rndis_reset(struct usbnet * usbdev)837 static int rndis_reset(struct usbnet *usbdev)
838 {
839 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
840 struct rndis_reset *reset;
841 int ret;
842
843 mutex_lock(&priv->command_lock);
844
845 reset = (void *)priv->command_buffer;
846 memset(reset, 0, sizeof(*reset));
847 reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
848 reset->msg_len = cpu_to_le32(sizeof(*reset));
849 priv->current_command_oid = 0;
850 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
851
852 mutex_unlock(&priv->command_lock);
853
854 if (ret < 0)
855 return ret;
856 return 0;
857 }
858
859 /*
860 * Specs say that we can only set config parameters only soon after device
861 * initialization.
862 * value_type: 0 = u32, 2 = unicode string
863 */
rndis_set_config_parameter(struct usbnet * dev,char * param,int value_type,void * value)864 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
865 int value_type, void *value)
866 {
867 struct ndis_config_param *infobuf;
868 int value_len, info_len, param_len, ret, i;
869 __le16 *unibuf;
870 __le32 *dst_value;
871
872 if (value_type == 0)
873 value_len = sizeof(__le32);
874 else if (value_type == 2)
875 value_len = strlen(value) * sizeof(__le16);
876 else
877 return -EINVAL;
878
879 param_len = strlen(param) * sizeof(__le16);
880 info_len = sizeof(*infobuf) + param_len + value_len;
881
882 #ifdef DEBUG
883 info_len += 12;
884 #endif
885 infobuf = kmalloc(info_len, GFP_KERNEL);
886 if (!infobuf)
887 return -ENOMEM;
888
889 #ifdef DEBUG
890 info_len -= 12;
891 /* extra 12 bytes are for padding (debug output) */
892 memset(infobuf, 0xCC, info_len + 12);
893 #endif
894
895 if (value_type == 2)
896 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
897 param, (u8 *)value);
898 else
899 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
900 param, *(u32 *)value);
901
902 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
903 infobuf->name_length = cpu_to_le32(param_len);
904 infobuf->type = cpu_to_le32(value_type);
905 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
906 infobuf->value_length = cpu_to_le32(value_len);
907
908 /* simple string to unicode string conversion */
909 unibuf = (void *)infobuf + sizeof(*infobuf);
910 for (i = 0; i < param_len / sizeof(__le16); i++)
911 unibuf[i] = cpu_to_le16(param[i]);
912
913 if (value_type == 2) {
914 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
915 for (i = 0; i < value_len / sizeof(__le16); i++)
916 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
917 } else {
918 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
919 *dst_value = cpu_to_le32(*(u32 *)value);
920 }
921
922 #ifdef DEBUG
923 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
924 for (i = 0; i < info_len; i += 12) {
925 u32 *tmp = (u32 *)((u8 *)infobuf + i);
926 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
927 cpu_to_be32(tmp[0]),
928 cpu_to_be32(tmp[1]),
929 cpu_to_be32(tmp[2]));
930 }
931 #endif
932
933 ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
934 infobuf, info_len);
935 if (ret != 0)
936 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
937 ret);
938
939 kfree(infobuf);
940 return ret;
941 }
942
rndis_set_config_parameter_str(struct usbnet * dev,char * param,char * value)943 static int rndis_set_config_parameter_str(struct usbnet *dev,
944 char *param, char *value)
945 {
946 return rndis_set_config_parameter(dev, param, 2, value);
947 }
948
949 /*
950 * data conversion functions
951 */
level_to_qual(int level)952 static int level_to_qual(int level)
953 {
954 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
955 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
956 }
957
958 /*
959 * common functions
960 */
961 static int set_infra_mode(struct usbnet *usbdev, int mode);
962 static void restore_keys(struct usbnet *usbdev);
963 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
964 bool *matched);
965
rndis_start_bssid_list_scan(struct usbnet * usbdev)966 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
967 {
968 __le32 tmp;
969
970 /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
971 tmp = cpu_to_le32(1);
972 return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
973 sizeof(tmp));
974 }
975
set_essid(struct usbnet * usbdev,struct ndis_80211_ssid * ssid)976 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
977 {
978 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
979 int ret;
980
981 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
982 ssid, sizeof(*ssid));
983 if (ret < 0) {
984 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
985 return ret;
986 }
987 if (ret == 0) {
988 priv->radio_on = true;
989 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
990 }
991
992 return ret;
993 }
994
set_bssid(struct usbnet * usbdev,const u8 * bssid)995 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
996 {
997 int ret;
998
999 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1000 bssid, ETH_ALEN);
1001 if (ret < 0) {
1002 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1003 bssid, ret);
1004 return ret;
1005 }
1006
1007 return ret;
1008 }
1009
clear_bssid(struct usbnet * usbdev)1010 static int clear_bssid(struct usbnet *usbdev)
1011 {
1012 static const u8 broadcast_mac[ETH_ALEN] = {
1013 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1014 };
1015
1016 return set_bssid(usbdev, broadcast_mac);
1017 }
1018
get_bssid(struct usbnet * usbdev,u8 bssid[ETH_ALEN])1019 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1020 {
1021 int ret, len;
1022
1023 len = ETH_ALEN;
1024 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1025 bssid, &len);
1026
1027 if (ret != 0)
1028 eth_zero_addr(bssid);
1029
1030 return ret;
1031 }
1032
get_association_info(struct usbnet * usbdev,struct ndis_80211_assoc_info * info,int len)1033 static int get_association_info(struct usbnet *usbdev,
1034 struct ndis_80211_assoc_info *info, int len)
1035 {
1036 return rndis_query_oid(usbdev,
1037 RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1038 info, &len);
1039 }
1040
is_associated(struct usbnet * usbdev)1041 static bool is_associated(struct usbnet *usbdev)
1042 {
1043 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1044 u8 bssid[ETH_ALEN];
1045 int ret;
1046
1047 if (!priv->radio_on)
1048 return false;
1049
1050 ret = get_bssid(usbdev, bssid);
1051
1052 return (ret == 0 && !is_zero_ether_addr(bssid));
1053 }
1054
disassociate(struct usbnet * usbdev,bool reset_ssid)1055 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1056 {
1057 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1058 struct ndis_80211_ssid ssid;
1059 int i, ret = 0;
1060
1061 if (priv->radio_on) {
1062 ret = rndis_set_oid(usbdev,
1063 RNDIS_OID_802_11_DISASSOCIATE,
1064 NULL, 0);
1065 if (ret == 0) {
1066 priv->radio_on = false;
1067 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1068 __func__);
1069
1070 if (reset_ssid)
1071 msleep(100);
1072 }
1073 }
1074
1075 /* disassociate causes radio to be turned off; if reset_ssid
1076 * is given, set random ssid to enable radio */
1077 if (reset_ssid) {
1078 /* Set device to infrastructure mode so we don't get ad-hoc
1079 * 'media connect' indications with the random ssid.
1080 */
1081 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1082
1083 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1084 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1085 ssid.essid[0] = 0x1;
1086 ssid.essid[1] = 0xff;
1087 for (i = 2; i < sizeof(ssid.essid); i++)
1088 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1089 ret = set_essid(usbdev, &ssid);
1090 }
1091 return ret;
1092 }
1093
set_auth_mode(struct usbnet * usbdev,u32 wpa_version,enum nl80211_auth_type auth_type,int keymgmt)1094 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1095 enum nl80211_auth_type auth_type, int keymgmt)
1096 {
1097 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1098 __le32 tmp;
1099 int auth_mode, ret;
1100
1101 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1102 __func__, wpa_version, auth_type, keymgmt);
1103
1104 if (wpa_version & NL80211_WPA_VERSION_2) {
1105 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1106 auth_mode = NDIS_80211_AUTH_WPA2;
1107 else
1108 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1109 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1110 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1111 auth_mode = NDIS_80211_AUTH_WPA;
1112 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1113 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1114 else
1115 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1116 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1117 auth_mode = NDIS_80211_AUTH_SHARED;
1118 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1119 auth_mode = NDIS_80211_AUTH_OPEN;
1120 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1121 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1122 else
1123 return -ENOTSUPP;
1124
1125 tmp = cpu_to_le32(auth_mode);
1126 ret = rndis_set_oid(usbdev,
1127 RNDIS_OID_802_11_AUTHENTICATION_MODE,
1128 &tmp, sizeof(tmp));
1129 if (ret != 0) {
1130 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1131 ret);
1132 return ret;
1133 }
1134
1135 priv->wpa_version = wpa_version;
1136
1137 return 0;
1138 }
1139
set_priv_filter(struct usbnet * usbdev)1140 static int set_priv_filter(struct usbnet *usbdev)
1141 {
1142 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1143 __le32 tmp;
1144
1145 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1146 __func__, priv->wpa_version);
1147
1148 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1149 priv->wpa_version & NL80211_WPA_VERSION_1)
1150 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1151 else
1152 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1153
1154 return rndis_set_oid(usbdev,
1155 RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1156 sizeof(tmp));
1157 }
1158
set_encr_mode(struct usbnet * usbdev,int pairwise,int groupwise)1159 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1160 {
1161 __le32 tmp;
1162 int encr_mode, ret;
1163
1164 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1165 __func__, pairwise, groupwise);
1166
1167 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1168 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1169 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1170 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1171 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1172 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1173 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1174 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1175 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1176 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1177 else
1178 encr_mode = NDIS_80211_ENCR_DISABLED;
1179
1180 tmp = cpu_to_le32(encr_mode);
1181 ret = rndis_set_oid(usbdev,
1182 RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1183 sizeof(tmp));
1184 if (ret != 0) {
1185 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1186 ret);
1187 return ret;
1188 }
1189
1190 return 0;
1191 }
1192
set_infra_mode(struct usbnet * usbdev,int mode)1193 static int set_infra_mode(struct usbnet *usbdev, int mode)
1194 {
1195 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1196 __le32 tmp;
1197 int ret;
1198
1199 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1200 __func__, priv->infra_mode);
1201
1202 tmp = cpu_to_le32(mode);
1203 ret = rndis_set_oid(usbdev,
1204 RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1205 &tmp, sizeof(tmp));
1206 if (ret != 0) {
1207 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1208 ret);
1209 return ret;
1210 }
1211
1212 /* NDIS drivers clear keys when infrastructure mode is
1213 * changed. But Linux tools assume otherwise. So set the
1214 * keys */
1215 restore_keys(usbdev);
1216
1217 priv->infra_mode = mode;
1218 return 0;
1219 }
1220
set_rts_threshold(struct usbnet * usbdev,u32 rts_threshold)1221 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1222 {
1223 __le32 tmp;
1224
1225 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1226
1227 if (rts_threshold == -1 || rts_threshold > 2347)
1228 rts_threshold = 2347;
1229
1230 tmp = cpu_to_le32(rts_threshold);
1231 return rndis_set_oid(usbdev,
1232 RNDIS_OID_802_11_RTS_THRESHOLD,
1233 &tmp, sizeof(tmp));
1234 }
1235
set_frag_threshold(struct usbnet * usbdev,u32 frag_threshold)1236 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1237 {
1238 __le32 tmp;
1239
1240 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1241
1242 if (frag_threshold < 256 || frag_threshold > 2346)
1243 frag_threshold = 2346;
1244
1245 tmp = cpu_to_le32(frag_threshold);
1246 return rndis_set_oid(usbdev,
1247 RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1248 &tmp, sizeof(tmp));
1249 }
1250
set_default_iw_params(struct usbnet * usbdev)1251 static void set_default_iw_params(struct usbnet *usbdev)
1252 {
1253 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1254 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1255 RNDIS_WLAN_KEY_MGMT_NONE);
1256 set_priv_filter(usbdev);
1257 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1258 }
1259
deauthenticate(struct usbnet * usbdev)1260 static int deauthenticate(struct usbnet *usbdev)
1261 {
1262 int ret;
1263
1264 ret = disassociate(usbdev, true);
1265 set_default_iw_params(usbdev);
1266 return ret;
1267 }
1268
set_channel(struct usbnet * usbdev,int channel)1269 static int set_channel(struct usbnet *usbdev, int channel)
1270 {
1271 struct ndis_80211_conf config;
1272 unsigned int dsconfig;
1273 int len, ret;
1274
1275 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1276
1277 /* this OID is valid only when not associated */
1278 if (is_associated(usbdev))
1279 return 0;
1280
1281 dsconfig = 1000 *
1282 ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1283
1284 len = sizeof(config);
1285 ret = rndis_query_oid(usbdev,
1286 RNDIS_OID_802_11_CONFIGURATION,
1287 &config, &len);
1288 if (ret < 0) {
1289 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1290 __func__);
1291 return ret;
1292 }
1293
1294 config.ds_config = cpu_to_le32(dsconfig);
1295 ret = rndis_set_oid(usbdev,
1296 RNDIS_OID_802_11_CONFIGURATION,
1297 &config, sizeof(config));
1298
1299 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1300
1301 return ret;
1302 }
1303
get_current_channel(struct usbnet * usbdev,u32 * beacon_period)1304 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1305 u32 *beacon_period)
1306 {
1307 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1308 struct ieee80211_channel *channel;
1309 struct ndis_80211_conf config;
1310 int len, ret;
1311
1312 /* Get channel and beacon interval */
1313 len = sizeof(config);
1314 ret = rndis_query_oid(usbdev,
1315 RNDIS_OID_802_11_CONFIGURATION,
1316 &config, &len);
1317 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1318 __func__, ret);
1319 if (ret < 0)
1320 return NULL;
1321
1322 channel = ieee80211_get_channel(priv->wdev.wiphy,
1323 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1324 if (!channel)
1325 return NULL;
1326
1327 if (beacon_period)
1328 *beacon_period = le32_to_cpu(config.beacon_period);
1329 return channel;
1330 }
1331
1332 /* index must be 0 - N, as per NDIS */
add_wep_key(struct usbnet * usbdev,const u8 * key,int key_len,u8 index)1333 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1334 u8 index)
1335 {
1336 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1337 struct ndis_80211_wep_key ndis_key;
1338 u32 cipher;
1339 int ret;
1340
1341 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1342 __func__, index, key_len);
1343
1344 if (index >= RNDIS_WLAN_NUM_KEYS)
1345 return -EINVAL;
1346
1347 if (key_len == 5)
1348 cipher = WLAN_CIPHER_SUITE_WEP40;
1349 else if (key_len == 13)
1350 cipher = WLAN_CIPHER_SUITE_WEP104;
1351 else
1352 return -EINVAL;
1353
1354 memset(&ndis_key, 0, sizeof(ndis_key));
1355
1356 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1357 ndis_key.length = cpu_to_le32(key_len);
1358 ndis_key.index = cpu_to_le32(index);
1359 memcpy(&ndis_key.material, key, key_len);
1360
1361 if (index == priv->encr_tx_key_index) {
1362 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1363 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1364 RNDIS_WLAN_ALG_NONE);
1365 if (ret)
1366 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1367 ret);
1368 }
1369
1370 ret = rndis_set_oid(usbdev,
1371 RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1372 sizeof(ndis_key));
1373 if (ret != 0) {
1374 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1375 index + 1, ret);
1376 return ret;
1377 }
1378
1379 priv->encr_keys[index].len = key_len;
1380 priv->encr_keys[index].cipher = cipher;
1381 memcpy(&priv->encr_keys[index].material, key, key_len);
1382 eth_broadcast_addr(priv->encr_keys[index].bssid);
1383
1384 return 0;
1385 }
1386
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)1387 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1388 u8 index, const u8 *addr, const u8 *rx_seq,
1389 int seq_len, u32 cipher, __le32 flags)
1390 {
1391 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1392 struct ndis_80211_key ndis_key;
1393 bool is_addr_ok;
1394 int ret;
1395
1396 if (index >= RNDIS_WLAN_NUM_KEYS) {
1397 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1398 __func__, index);
1399 return -EINVAL;
1400 }
1401 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1402 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1403 __func__, key_len);
1404 return -EINVAL;
1405 }
1406 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1407 if (!rx_seq || seq_len <= 0) {
1408 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1409 __func__);
1410 return -EINVAL;
1411 }
1412 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1413 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1414 return -EINVAL;
1415 }
1416 }
1417
1418 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1419 !is_broadcast_ether_addr(addr);
1420 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1421 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1422 __func__, addr);
1423 return -EINVAL;
1424 }
1425
1426 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1427 __func__, index,
1428 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1429 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1430 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1431
1432 memset(&ndis_key, 0, sizeof(ndis_key));
1433
1434 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1435 sizeof(ndis_key.material) + key_len);
1436 ndis_key.length = cpu_to_le32(key_len);
1437 ndis_key.index = cpu_to_le32(index) | flags;
1438
1439 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1440 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1441 * different order than NDIS spec, so swap the order here. */
1442 memcpy(ndis_key.material, key, 16);
1443 memcpy(ndis_key.material + 16, key + 24, 8);
1444 memcpy(ndis_key.material + 24, key + 16, 8);
1445 } else
1446 memcpy(ndis_key.material, key, key_len);
1447
1448 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1449 memcpy(ndis_key.rsc, rx_seq, seq_len);
1450
1451 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1452 /* pairwise key */
1453 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1454 } else {
1455 /* group key */
1456 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1457 eth_broadcast_addr(ndis_key.bssid);
1458 else
1459 get_bssid(usbdev, ndis_key.bssid);
1460 }
1461
1462 ret = rndis_set_oid(usbdev,
1463 RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1464 le32_to_cpu(ndis_key.size));
1465 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1466 __func__, ret);
1467 if (ret != 0)
1468 return ret;
1469
1470 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1471 priv->encr_keys[index].len = key_len;
1472 priv->encr_keys[index].cipher = cipher;
1473 memcpy(&priv->encr_keys[index].material, key, key_len);
1474 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1475 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1476 else
1477 eth_broadcast_addr(priv->encr_keys[index].bssid);
1478
1479 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1480 priv->encr_tx_key_index = index;
1481
1482 return 0;
1483 }
1484
restore_key(struct usbnet * usbdev,u8 key_idx)1485 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1486 {
1487 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1488 struct rndis_wlan_encr_key key;
1489
1490 if (is_wpa_key(priv, key_idx))
1491 return 0;
1492
1493 key = priv->encr_keys[key_idx];
1494
1495 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1496
1497 if (key.len == 0)
1498 return 0;
1499
1500 return add_wep_key(usbdev, key.material, key.len, key_idx);
1501 }
1502
restore_keys(struct usbnet * usbdev)1503 static void restore_keys(struct usbnet *usbdev)
1504 {
1505 int i;
1506
1507 for (i = 0; i < 4; i++)
1508 restore_key(usbdev, i);
1509 }
1510
clear_key(struct rndis_wlan_private * priv,u8 idx)1511 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1512 {
1513 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1514 }
1515
1516 /* remove_key is for both wep and wpa */
remove_key(struct usbnet * usbdev,u8 index,const u8 * bssid)1517 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1518 {
1519 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1520 struct ndis_80211_remove_key remove_key;
1521 __le32 keyindex;
1522 bool is_wpa;
1523 int ret;
1524
1525 if (index >= RNDIS_WLAN_NUM_KEYS)
1526 return -ENOENT;
1527
1528 if (priv->encr_keys[index].len == 0)
1529 return 0;
1530
1531 is_wpa = is_wpa_key(priv, index);
1532
1533 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1534 __func__, index, is_wpa ? "wpa" : "wep",
1535 priv->encr_keys[index].len);
1536
1537 clear_key(priv, index);
1538
1539 if (is_wpa) {
1540 remove_key.size = cpu_to_le32(sizeof(remove_key));
1541 remove_key.index = cpu_to_le32(index);
1542 if (bssid) {
1543 /* pairwise key */
1544 if (!is_broadcast_ether_addr(bssid))
1545 remove_key.index |=
1546 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1547 memcpy(remove_key.bssid, bssid,
1548 sizeof(remove_key.bssid));
1549 } else
1550 memset(remove_key.bssid, 0xff,
1551 sizeof(remove_key.bssid));
1552
1553 ret = rndis_set_oid(usbdev,
1554 RNDIS_OID_802_11_REMOVE_KEY,
1555 &remove_key, sizeof(remove_key));
1556 if (ret != 0)
1557 return ret;
1558 } else {
1559 keyindex = cpu_to_le32(index);
1560 ret = rndis_set_oid(usbdev,
1561 RNDIS_OID_802_11_REMOVE_WEP,
1562 &keyindex, sizeof(keyindex));
1563 if (ret != 0) {
1564 netdev_warn(usbdev->net,
1565 "removing encryption key %d failed (%08X)\n",
1566 index, ret);
1567 return ret;
1568 }
1569 }
1570
1571 /* if it is transmit key, disable encryption */
1572 if (index == priv->encr_tx_key_index)
1573 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1574
1575 return 0;
1576 }
1577
set_multicast_list(struct usbnet * usbdev)1578 static void set_multicast_list(struct usbnet *usbdev)
1579 {
1580 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1581 struct netdev_hw_addr *ha;
1582 __le32 filter, basefilter;
1583 int ret;
1584 char *mc_addrs = NULL;
1585 int mc_count;
1586
1587 basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1588 RNDIS_PACKET_TYPE_BROADCAST);
1589
1590 if (usbdev->net->flags & IFF_PROMISC) {
1591 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1592 RNDIS_PACKET_TYPE_ALL_LOCAL);
1593 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1594 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1595 }
1596
1597 if (filter != basefilter)
1598 goto set_filter;
1599
1600 /*
1601 * mc_list should be accessed holding the lock, so copy addresses to
1602 * local buffer first.
1603 */
1604 netif_addr_lock_bh(usbdev->net);
1605 mc_count = netdev_mc_count(usbdev->net);
1606 if (mc_count > priv->multicast_size) {
1607 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1608 } else if (mc_count) {
1609 int i = 0;
1610
1611 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1612 if (!mc_addrs) {
1613 netif_addr_unlock_bh(usbdev->net);
1614 return;
1615 }
1616
1617 netdev_for_each_mc_addr(ha, usbdev->net)
1618 memcpy(mc_addrs + i++ * ETH_ALEN,
1619 ha->addr, ETH_ALEN);
1620 }
1621 netif_addr_unlock_bh(usbdev->net);
1622
1623 if (filter != basefilter)
1624 goto set_filter;
1625
1626 if (mc_count) {
1627 ret = rndis_set_oid(usbdev,
1628 RNDIS_OID_802_3_MULTICAST_LIST,
1629 mc_addrs, mc_count * ETH_ALEN);
1630 kfree(mc_addrs);
1631 if (ret == 0)
1632 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1633 else
1634 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1635
1636 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1637 mc_count, priv->multicast_size, ret);
1638 }
1639
1640 set_filter:
1641 ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1642 sizeof(filter));
1643 if (ret < 0) {
1644 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1645 le32_to_cpu(filter));
1646 }
1647
1648 netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1649 le32_to_cpu(filter), ret);
1650 }
1651
1652 #ifdef DEBUG
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1653 static void debug_print_pmkids(struct usbnet *usbdev,
1654 struct ndis_80211_pmkid *pmkids,
1655 const char *func_str)
1656 {
1657 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1658 int i, len, count, max_pmkids, entry_len;
1659
1660 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1661 len = le32_to_cpu(pmkids->length);
1662 count = le32_to_cpu(pmkids->bssid_info_count);
1663
1664 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1665
1666 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1667 "%d)\n", func_str, count, len, entry_len);
1668
1669 if (count > max_pmkids)
1670 count = max_pmkids;
1671
1672 for (i = 0; i < count; i++) {
1673 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1674
1675 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1676 "pmkid: %08X:%08X:%08X:%08X\n",
1677 func_str, pmkids->bssid_info[i].bssid,
1678 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1679 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1680 }
1681 }
1682 #else
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1683 static void debug_print_pmkids(struct usbnet *usbdev,
1684 struct ndis_80211_pmkid *pmkids,
1685 const char *func_str)
1686 {
1687 return;
1688 }
1689 #endif
1690
get_device_pmkids(struct usbnet * usbdev)1691 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1692 {
1693 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1694 struct ndis_80211_pmkid *pmkids;
1695 int len, ret, max_pmkids;
1696
1697 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1698 len = struct_size(pmkids, bssid_info, max_pmkids);
1699
1700 pmkids = kzalloc(len, GFP_KERNEL);
1701 if (!pmkids)
1702 return ERR_PTR(-ENOMEM);
1703
1704 pmkids->length = cpu_to_le32(len);
1705 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1706
1707 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1708 pmkids, &len);
1709 if (ret < 0) {
1710 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1711 " -> %d\n", __func__, len, max_pmkids, ret);
1712
1713 kfree(pmkids);
1714 return ERR_PTR(ret);
1715 }
1716
1717 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1718 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1719
1720 debug_print_pmkids(usbdev, pmkids, __func__);
1721
1722 return pmkids;
1723 }
1724
set_device_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids)1725 static int set_device_pmkids(struct usbnet *usbdev,
1726 struct ndis_80211_pmkid *pmkids)
1727 {
1728 int ret, len, num_pmkids;
1729
1730 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1731 len = struct_size(pmkids, bssid_info, num_pmkids);
1732 pmkids->length = cpu_to_le32(len);
1733
1734 debug_print_pmkids(usbdev, pmkids, __func__);
1735
1736 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1737 le32_to_cpu(pmkids->length));
1738 if (ret < 0) {
1739 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1740 "\n", __func__, len, num_pmkids, ret);
1741 }
1742
1743 kfree(pmkids);
1744 return ret;
1745 }
1746
remove_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1747 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1748 struct ndis_80211_pmkid *pmkids,
1749 struct cfg80211_pmksa *pmksa,
1750 int max_pmkids)
1751 {
1752 int i, err;
1753 unsigned int count;
1754
1755 count = le32_to_cpu(pmkids->bssid_info_count);
1756
1757 if (count > max_pmkids)
1758 count = max_pmkids;
1759
1760 for (i = 0; i < count; i++)
1761 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1762 pmksa->bssid))
1763 break;
1764
1765 /* pmkid not found */
1766 if (i == count) {
1767 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1768 __func__, pmksa->bssid);
1769 err = -ENOENT;
1770 goto error;
1771 }
1772
1773 for (; i + 1 < count; i++)
1774 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1775
1776 count--;
1777 pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1778 pmkids->bssid_info_count = cpu_to_le32(count);
1779
1780 return pmkids;
1781 error:
1782 kfree(pmkids);
1783 return ERR_PTR(err);
1784 }
1785
update_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1786 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1787 struct ndis_80211_pmkid *pmkids,
1788 struct cfg80211_pmksa *pmksa,
1789 int max_pmkids)
1790 {
1791 struct ndis_80211_pmkid *new_pmkids;
1792 int i, err, newlen;
1793 unsigned int count;
1794
1795 count = le32_to_cpu(pmkids->bssid_info_count);
1796
1797 if (count > max_pmkids)
1798 count = max_pmkids;
1799
1800 /* update with new pmkid */
1801 for (i = 0; i < count; i++) {
1802 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1803 pmksa->bssid))
1804 continue;
1805
1806 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1807 WLAN_PMKID_LEN);
1808
1809 return pmkids;
1810 }
1811
1812 /* out of space, return error */
1813 if (i == max_pmkids) {
1814 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1815 err = -ENOSPC;
1816 goto error;
1817 }
1818
1819 /* add new pmkid */
1820 newlen = struct_size(pmkids, bssid_info, count + 1);
1821
1822 new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1823 if (!new_pmkids) {
1824 err = -ENOMEM;
1825 goto error;
1826 }
1827 pmkids = new_pmkids;
1828
1829 pmkids->length = cpu_to_le32(newlen);
1830 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1831
1832 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1833 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1834
1835 return pmkids;
1836 error:
1837 kfree(pmkids);
1838 return ERR_PTR(err);
1839 }
1840
1841 /*
1842 * cfg80211 ops
1843 */
rndis_change_virtual_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,struct vif_params * params)1844 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1845 struct net_device *dev,
1846 enum nl80211_iftype type,
1847 struct vif_params *params)
1848 {
1849 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1850 struct usbnet *usbdev = priv->usbdev;
1851 int mode;
1852
1853 switch (type) {
1854 case NL80211_IFTYPE_ADHOC:
1855 mode = NDIS_80211_INFRA_ADHOC;
1856 break;
1857 case NL80211_IFTYPE_STATION:
1858 mode = NDIS_80211_INFRA_INFRA;
1859 break;
1860 default:
1861 return -EINVAL;
1862 }
1863
1864 priv->wdev.iftype = type;
1865
1866 return set_infra_mode(usbdev, mode);
1867 }
1868
rndis_set_wiphy_params(struct wiphy * wiphy,u32 changed)1869 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1870 {
1871 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1872 struct usbnet *usbdev = priv->usbdev;
1873 int err;
1874
1875 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1876 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1877 if (err < 0)
1878 return err;
1879 }
1880
1881 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1882 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1883 if (err < 0)
1884 return err;
1885 }
1886
1887 return 0;
1888 }
1889
rndis_set_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_tx_power_setting type,int mbm)1890 static int rndis_set_tx_power(struct wiphy *wiphy,
1891 struct wireless_dev *wdev,
1892 enum nl80211_tx_power_setting type,
1893 int mbm)
1894 {
1895 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1896 struct usbnet *usbdev = priv->usbdev;
1897
1898 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1899 __func__, type, mbm);
1900
1901 if (mbm < 0 || (mbm % 100))
1902 return -ENOTSUPP;
1903
1904 /* Device doesn't support changing txpower after initialization, only
1905 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1906 * currently used.
1907 */
1908 if (type == NL80211_TX_POWER_AUTOMATIC ||
1909 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1910 if (!priv->radio_on)
1911 disassociate(usbdev, true); /* turn on radio */
1912
1913 return 0;
1914 }
1915
1916 return -ENOTSUPP;
1917 }
1918
rndis_get_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int * dbm)1919 static int rndis_get_tx_power(struct wiphy *wiphy,
1920 struct wireless_dev *wdev,
1921 int *dbm)
1922 {
1923 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1924 struct usbnet *usbdev = priv->usbdev;
1925
1926 *dbm = get_bcm4320_power_dbm(priv);
1927
1928 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1929
1930 return 0;
1931 }
1932
1933 #define SCAN_DELAY_JIFFIES (6 * HZ)
rndis_scan(struct wiphy * wiphy,struct cfg80211_scan_request * request)1934 static int rndis_scan(struct wiphy *wiphy,
1935 struct cfg80211_scan_request *request)
1936 {
1937 struct net_device *dev = request->wdev->netdev;
1938 struct usbnet *usbdev = netdev_priv(dev);
1939 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1940 int ret;
1941 int delay = SCAN_DELAY_JIFFIES;
1942
1943 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1944
1945 /* Get current bssid list from device before new scan, as new scan
1946 * clears internal bssid list.
1947 */
1948 rndis_check_bssid_list(usbdev, NULL, NULL);
1949
1950 if (priv->scan_request && priv->scan_request != request)
1951 return -EBUSY;
1952
1953 priv->scan_request = request;
1954
1955 ret = rndis_start_bssid_list_scan(usbdev);
1956 if (ret == 0) {
1957 if (priv->device_type == RNDIS_BCM4320A)
1958 delay = HZ;
1959
1960 /* Wait before retrieving scan results from device */
1961 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1962 }
1963
1964 return ret;
1965 }
1966
rndis_bss_info_update(struct usbnet * usbdev,struct ndis_80211_bssid_ex * bssid)1967 static bool rndis_bss_info_update(struct usbnet *usbdev,
1968 struct ndis_80211_bssid_ex *bssid)
1969 {
1970 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1971 struct ieee80211_channel *channel;
1972 struct cfg80211_bss *bss;
1973 s32 signal;
1974 u64 timestamp;
1975 u16 capability;
1976 u16 beacon_interval;
1977 struct ndis_80211_fixed_ies *fixed;
1978 int ie_len, bssid_len;
1979 u8 *ie;
1980
1981 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1982 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1983
1984 /* parse bssid structure */
1985 bssid_len = le32_to_cpu(bssid->length);
1986
1987 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1988 sizeof(struct ndis_80211_fixed_ies))
1989 return NULL;
1990
1991 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1992
1993 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1994 ie_len = min(bssid_len - (int)sizeof(*bssid),
1995 (int)le32_to_cpu(bssid->ie_length));
1996 ie_len -= sizeof(struct ndis_80211_fixed_ies);
1997 if (ie_len < 0)
1998 return NULL;
1999
2000 /* extract data for cfg80211_inform_bss */
2001 channel = ieee80211_get_channel(priv->wdev.wiphy,
2002 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2003 if (!channel)
2004 return NULL;
2005
2006 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2007 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2008 capability = le16_to_cpu(fixed->capabilities);
2009 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2010
2011 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2012 CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2013 timestamp, capability, beacon_interval,
2014 ie, ie_len, signal, GFP_KERNEL);
2015 cfg80211_put_bss(priv->wdev.wiphy, bss);
2016
2017 return (bss != NULL);
2018 }
2019
next_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int * bssid_len,void * buf,int len)2020 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2021 struct ndis_80211_bssid_ex *bssid,
2022 int *bssid_len, void *buf, int len)
2023 {
2024 void *buf_end, *bssid_end;
2025
2026 buf_end = (char *)buf + len;
2027 bssid_end = (char *)bssid + *bssid_len;
2028
2029 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2030 *bssid_len = 0;
2031 return NULL;
2032 } else {
2033 bssid = (void *)((char *)bssid + *bssid_len);
2034 *bssid_len = le32_to_cpu(bssid->length);
2035 return bssid;
2036 }
2037 }
2038
check_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int bssid_len,void * buf,int len)2039 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2040 int bssid_len, void *buf, int len)
2041 {
2042 void *buf_end, *bssid_end;
2043
2044 if (!bssid || bssid_len <= 0 || bssid_len > len)
2045 return false;
2046
2047 buf_end = (char *)buf + len;
2048 bssid_end = (char *)bssid + bssid_len;
2049
2050 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2051 }
2052
rndis_check_bssid_list(struct usbnet * usbdev,u8 * match_bssid,bool * matched)2053 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2054 bool *matched)
2055 {
2056 void *buf = NULL;
2057 struct ndis_80211_bssid_list_ex *bssid_list;
2058 struct ndis_80211_bssid_ex *bssid;
2059 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2060
2061 netdev_dbg(usbdev->net, "%s()\n", __func__);
2062
2063 len = CONTROL_BUFFER_SIZE;
2064 resize_buf:
2065 buf = kzalloc(len, GFP_KERNEL);
2066 if (!buf) {
2067 ret = -ENOMEM;
2068 goto out;
2069 }
2070
2071 /* BSSID-list might have got bigger last time we checked, keep
2072 * resizing until it won't get any bigger.
2073 */
2074 new_len = len;
2075 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2076 buf, &new_len);
2077 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2078 goto out;
2079
2080 if (new_len > len) {
2081 len = new_len;
2082 kfree(buf);
2083 goto resize_buf;
2084 }
2085
2086 len = new_len;
2087
2088 bssid_list = buf;
2089 count = le32_to_cpu(bssid_list->num_items);
2090 real_count = 0;
2091 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2092
2093 bssid_len = 0;
2094 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2095
2096 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2097 * received 'num_items' and walking through full bssid buffer instead.
2098 */
2099 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2100 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2101 matched) {
2102 if (ether_addr_equal(bssid->mac, match_bssid))
2103 *matched = true;
2104 }
2105
2106 real_count++;
2107 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2108 }
2109
2110 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2111 " %d\n", __func__, count, real_count);
2112
2113 out:
2114 kfree(buf);
2115 return ret;
2116 }
2117
rndis_get_scan_results(struct work_struct * work)2118 static void rndis_get_scan_results(struct work_struct *work)
2119 {
2120 struct rndis_wlan_private *priv =
2121 container_of(work, struct rndis_wlan_private, scan_work.work);
2122 struct usbnet *usbdev = priv->usbdev;
2123 struct cfg80211_scan_info info = {};
2124 int ret;
2125
2126 netdev_dbg(usbdev->net, "get_scan_results\n");
2127
2128 if (!priv->scan_request)
2129 return;
2130
2131 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2132
2133 info.aborted = ret < 0;
2134 cfg80211_scan_done(priv->scan_request, &info);
2135
2136 priv->scan_request = NULL;
2137 }
2138
rndis_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)2139 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2140 struct cfg80211_connect_params *sme)
2141 {
2142 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2143 struct usbnet *usbdev = priv->usbdev;
2144 struct ieee80211_channel *channel = sme->channel;
2145 struct ndis_80211_ssid ssid;
2146 int pairwise = RNDIS_WLAN_ALG_NONE;
2147 int groupwise = RNDIS_WLAN_ALG_NONE;
2148 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2149 int length, i, ret, chan = -1;
2150
2151 if (channel)
2152 chan = ieee80211_frequency_to_channel(channel->center_freq);
2153
2154 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2155 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2156 pairwise |=
2157 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2158
2159 if (sme->crypto.n_ciphers_pairwise > 0 &&
2160 pairwise == RNDIS_WLAN_ALG_NONE) {
2161 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2162 return -ENOTSUPP;
2163 }
2164
2165 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2166 keymgmt |=
2167 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2168
2169 if (sme->crypto.n_akm_suites > 0 &&
2170 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2171 netdev_err(usbdev->net, "Invalid keymgmt\n");
2172 return -ENOTSUPP;
2173 }
2174
2175 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2176 sme->ssid, sme->bssid, chan,
2177 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2178 groupwise, pairwise, keymgmt);
2179
2180 if (is_associated(usbdev))
2181 disassociate(usbdev, false);
2182
2183 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2184 if (ret < 0) {
2185 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2186 ret);
2187 goto err_turn_radio_on;
2188 }
2189
2190 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2191 keymgmt);
2192 if (ret < 0) {
2193 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2194 ret);
2195 goto err_turn_radio_on;
2196 }
2197
2198 set_priv_filter(usbdev);
2199
2200 ret = set_encr_mode(usbdev, pairwise, groupwise);
2201 if (ret < 0) {
2202 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2203 ret);
2204 goto err_turn_radio_on;
2205 }
2206
2207 if (channel) {
2208 ret = set_channel(usbdev, chan);
2209 if (ret < 0) {
2210 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2211 ret);
2212 goto err_turn_radio_on;
2213 }
2214 }
2215
2216 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2217 priv->encr_tx_key_index = sme->key_idx;
2218 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2219 if (ret < 0) {
2220 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2221 ret, sme->key_len, sme->key_idx);
2222 goto err_turn_radio_on;
2223 }
2224 }
2225
2226 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2227 !is_broadcast_ether_addr(sme->bssid)) {
2228 ret = set_bssid(usbdev, sme->bssid);
2229 if (ret < 0) {
2230 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2231 ret);
2232 goto err_turn_radio_on;
2233 }
2234 } else
2235 clear_bssid(usbdev);
2236
2237 length = sme->ssid_len;
2238 if (length > NDIS_802_11_LENGTH_SSID)
2239 length = NDIS_802_11_LENGTH_SSID;
2240
2241 memset(&ssid, 0, sizeof(ssid));
2242 ssid.length = cpu_to_le32(length);
2243 memcpy(ssid.essid, sme->ssid, length);
2244
2245 /* Pause and purge rx queue, so we don't pass packets before
2246 * 'media connect'-indication.
2247 */
2248 usbnet_pause_rx(usbdev);
2249 usbnet_purge_paused_rxq(usbdev);
2250
2251 ret = set_essid(usbdev, &ssid);
2252 if (ret < 0)
2253 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2254 return ret;
2255
2256 err_turn_radio_on:
2257 disassociate(usbdev, true);
2258
2259 return ret;
2260 }
2261
rndis_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)2262 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2263 u16 reason_code)
2264 {
2265 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2266 struct usbnet *usbdev = priv->usbdev;
2267
2268 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2269
2270 priv->connected = false;
2271 eth_zero_addr(priv->bssid);
2272
2273 return deauthenticate(usbdev);
2274 }
2275
rndis_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)2276 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2277 struct cfg80211_ibss_params *params)
2278 {
2279 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2280 struct usbnet *usbdev = priv->usbdev;
2281 struct ieee80211_channel *channel = params->chandef.chan;
2282 struct ndis_80211_ssid ssid;
2283 enum nl80211_auth_type auth_type;
2284 int ret, alg, length, chan = -1;
2285
2286 if (channel)
2287 chan = ieee80211_frequency_to_channel(channel->center_freq);
2288
2289 /* TODO: How to handle ad-hoc encryption?
2290 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2291 * pre-shared for encryption (open/shared/wpa), is key set before
2292 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2293 */
2294 if (params->privacy) {
2295 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2296 alg = RNDIS_WLAN_ALG_WEP;
2297 } else {
2298 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2299 alg = RNDIS_WLAN_ALG_NONE;
2300 }
2301
2302 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2303 params->ssid, params->bssid, chan, params->privacy);
2304
2305 if (is_associated(usbdev))
2306 disassociate(usbdev, false);
2307
2308 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2309 if (ret < 0) {
2310 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2311 ret);
2312 goto err_turn_radio_on;
2313 }
2314
2315 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2316 if (ret < 0) {
2317 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2318 ret);
2319 goto err_turn_radio_on;
2320 }
2321
2322 set_priv_filter(usbdev);
2323
2324 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2325 if (ret < 0) {
2326 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2327 ret);
2328 goto err_turn_radio_on;
2329 }
2330
2331 if (channel) {
2332 ret = set_channel(usbdev, chan);
2333 if (ret < 0) {
2334 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2335 ret);
2336 goto err_turn_radio_on;
2337 }
2338 }
2339
2340 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2341 !is_broadcast_ether_addr(params->bssid)) {
2342 ret = set_bssid(usbdev, params->bssid);
2343 if (ret < 0) {
2344 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2345 ret);
2346 goto err_turn_radio_on;
2347 }
2348 } else
2349 clear_bssid(usbdev);
2350
2351 length = params->ssid_len;
2352 if (length > NDIS_802_11_LENGTH_SSID)
2353 length = NDIS_802_11_LENGTH_SSID;
2354
2355 memset(&ssid, 0, sizeof(ssid));
2356 ssid.length = cpu_to_le32(length);
2357 memcpy(ssid.essid, params->ssid, length);
2358
2359 /* Don't need to pause rx queue for ad-hoc. */
2360 usbnet_purge_paused_rxq(usbdev);
2361 usbnet_resume_rx(usbdev);
2362
2363 ret = set_essid(usbdev, &ssid);
2364 if (ret < 0)
2365 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2366 ret);
2367 return ret;
2368
2369 err_turn_radio_on:
2370 disassociate(usbdev, true);
2371
2372 return ret;
2373 }
2374
rndis_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2375 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2376 {
2377 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2378 struct usbnet *usbdev = priv->usbdev;
2379
2380 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2381
2382 priv->connected = false;
2383 eth_zero_addr(priv->bssid);
2384
2385 return deauthenticate(usbdev);
2386 }
2387
rndis_add_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr,struct key_params * params)2388 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2389 u8 key_index, bool pairwise, const u8 *mac_addr,
2390 struct key_params *params)
2391 {
2392 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2393 struct usbnet *usbdev = priv->usbdev;
2394 __le32 flags;
2395
2396 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2397 __func__, key_index, mac_addr, params->cipher);
2398
2399 switch (params->cipher) {
2400 case WLAN_CIPHER_SUITE_WEP40:
2401 case WLAN_CIPHER_SUITE_WEP104:
2402 return add_wep_key(usbdev, params->key, params->key_len,
2403 key_index);
2404 case WLAN_CIPHER_SUITE_TKIP:
2405 case WLAN_CIPHER_SUITE_CCMP:
2406 flags = 0;
2407
2408 if (params->seq && params->seq_len > 0)
2409 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2410 if (mac_addr)
2411 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2412 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2413
2414 return add_wpa_key(usbdev, params->key, params->key_len,
2415 key_index, mac_addr, params->seq,
2416 params->seq_len, params->cipher, flags);
2417 default:
2418 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2419 __func__, params->cipher);
2420 return -ENOTSUPP;
2421 }
2422 }
2423
rndis_del_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr)2424 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2425 u8 key_index, bool pairwise, const u8 *mac_addr)
2426 {
2427 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2428 struct usbnet *usbdev = priv->usbdev;
2429
2430 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2431
2432 return remove_key(usbdev, key_index, mac_addr);
2433 }
2434
rndis_set_default_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool unicast,bool multicast)2435 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2436 u8 key_index, bool unicast, bool multicast)
2437 {
2438 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2439 struct usbnet *usbdev = priv->usbdev;
2440 struct rndis_wlan_encr_key key;
2441
2442 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2443
2444 if (key_index >= RNDIS_WLAN_NUM_KEYS)
2445 return -ENOENT;
2446
2447 priv->encr_tx_key_index = key_index;
2448
2449 if (is_wpa_key(priv, key_index))
2450 return 0;
2451
2452 key = priv->encr_keys[key_index];
2453
2454 return add_wep_key(usbdev, key.material, key.len, key_index);
2455 }
2456
rndis_fill_station_info(struct usbnet * usbdev,struct station_info * sinfo)2457 static void rndis_fill_station_info(struct usbnet *usbdev,
2458 struct station_info *sinfo)
2459 {
2460 __le32 linkspeed, rssi;
2461 int ret, len;
2462
2463 memset(sinfo, 0, sizeof(*sinfo));
2464
2465 len = sizeof(linkspeed);
2466 ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2467 if (ret == 0) {
2468 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2469 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2470 }
2471
2472 len = sizeof(rssi);
2473 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2474 &rssi, &len);
2475 if (ret == 0) {
2476 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2477 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2478 }
2479 }
2480
rndis_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)2481 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2482 const u8 *mac, struct station_info *sinfo)
2483 {
2484 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2485 struct usbnet *usbdev = priv->usbdev;
2486
2487 if (!ether_addr_equal(priv->bssid, mac))
2488 return -ENOENT;
2489
2490 rndis_fill_station_info(usbdev, sinfo);
2491
2492 return 0;
2493 }
2494
rndis_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)2495 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2496 int idx, u8 *mac, struct station_info *sinfo)
2497 {
2498 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2499 struct usbnet *usbdev = priv->usbdev;
2500
2501 if (idx != 0)
2502 return -ENOENT;
2503
2504 memcpy(mac, priv->bssid, ETH_ALEN);
2505
2506 rndis_fill_station_info(usbdev, sinfo);
2507
2508 return 0;
2509 }
2510
rndis_set_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2511 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2512 struct cfg80211_pmksa *pmksa)
2513 {
2514 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2515 struct usbnet *usbdev = priv->usbdev;
2516 struct ndis_80211_pmkid *pmkids;
2517 u32 *tmp = (u32 *)pmksa->pmkid;
2518
2519 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2520 pmksa->bssid,
2521 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2522 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2523
2524 pmkids = get_device_pmkids(usbdev);
2525 if (IS_ERR(pmkids)) {
2526 /* couldn't read PMKID cache from device */
2527 return PTR_ERR(pmkids);
2528 }
2529
2530 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2531 if (IS_ERR(pmkids)) {
2532 /* not found, list full, etc */
2533 return PTR_ERR(pmkids);
2534 }
2535
2536 return set_device_pmkids(usbdev, pmkids);
2537 }
2538
rndis_del_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2539 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2540 struct cfg80211_pmksa *pmksa)
2541 {
2542 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2543 struct usbnet *usbdev = priv->usbdev;
2544 struct ndis_80211_pmkid *pmkids;
2545 u32 *tmp = (u32 *)pmksa->pmkid;
2546
2547 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2548 pmksa->bssid,
2549 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2550 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2551
2552 pmkids = get_device_pmkids(usbdev);
2553 if (IS_ERR(pmkids)) {
2554 /* Couldn't read PMKID cache from device */
2555 return PTR_ERR(pmkids);
2556 }
2557
2558 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2559 if (IS_ERR(pmkids)) {
2560 /* not found, etc */
2561 return PTR_ERR(pmkids);
2562 }
2563
2564 return set_device_pmkids(usbdev, pmkids);
2565 }
2566
rndis_flush_pmksa(struct wiphy * wiphy,struct net_device * netdev)2567 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2568 {
2569 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2570 struct usbnet *usbdev = priv->usbdev;
2571 struct ndis_80211_pmkid pmkid;
2572
2573 netdev_dbg(usbdev->net, "%s()\n", __func__);
2574
2575 memset(&pmkid, 0, sizeof(pmkid));
2576
2577 pmkid.length = cpu_to_le32(sizeof(pmkid));
2578 pmkid.bssid_info_count = cpu_to_le32(0);
2579
2580 return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2581 &pmkid, sizeof(pmkid));
2582 }
2583
rndis_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)2584 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2585 bool enabled, int timeout)
2586 {
2587 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2588 struct usbnet *usbdev = priv->usbdev;
2589 int power_mode;
2590 __le32 mode;
2591 int ret;
2592
2593 if (priv->device_type != RNDIS_BCM4320B)
2594 return -ENOTSUPP;
2595
2596 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2597 enabled ? "enabled" : "disabled",
2598 timeout);
2599
2600 if (enabled)
2601 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2602 else
2603 power_mode = NDIS_80211_POWER_MODE_CAM;
2604
2605 if (power_mode == priv->power_mode)
2606 return 0;
2607
2608 priv->power_mode = power_mode;
2609
2610 mode = cpu_to_le32(power_mode);
2611 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2612 &mode, sizeof(mode));
2613
2614 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2615 __func__, ret);
2616
2617 return ret;
2618 }
2619
rndis_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)2620 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2621 struct net_device *dev,
2622 s32 rssi_thold, u32 rssi_hyst)
2623 {
2624 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2625
2626 priv->cqm_rssi_thold = rssi_thold;
2627 priv->cqm_rssi_hyst = rssi_hyst;
2628 priv->last_cqm_event_rssi = 0;
2629
2630 return 0;
2631 }
2632
rndis_wlan_craft_connected_bss(struct usbnet * usbdev,u8 * bssid,struct ndis_80211_assoc_info * info)2633 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2634 struct ndis_80211_assoc_info *info)
2635 {
2636 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2637 struct ieee80211_channel *channel;
2638 struct ndis_80211_ssid ssid;
2639 struct cfg80211_bss *bss;
2640 s32 signal;
2641 u64 timestamp;
2642 u16 capability;
2643 u32 beacon_period = 0;
2644 __le32 rssi;
2645 u8 ie_buf[34];
2646 int len, ret, ie_len;
2647
2648 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2649 len = sizeof(rssi);
2650 rssi = 0;
2651 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2652 &rssi, &len);
2653 signal = level_to_qual(le32_to_cpu(rssi));
2654
2655 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2656 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2657 level_to_qual(le32_to_cpu(rssi)));
2658
2659 /* Get AP capabilities */
2660 if (info) {
2661 capability = le16_to_cpu(info->resp_ie.capa);
2662 } else {
2663 /* Set atleast ESS/IBSS capability */
2664 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2665 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2666 }
2667
2668 /* Get channel and beacon interval */
2669 channel = get_current_channel(usbdev, &beacon_period);
2670 if (!channel) {
2671 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2672 __func__);
2673 return;
2674 }
2675
2676 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2677 len = sizeof(ssid);
2678 memset(&ssid, 0, sizeof(ssid));
2679 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2680 &ssid, &len);
2681 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2682 "'%.32s'\n", __func__, ret,
2683 le32_to_cpu(ssid.length), ssid.essid);
2684
2685 if (le32_to_cpu(ssid.length) > 32)
2686 ssid.length = cpu_to_le32(32);
2687
2688 ie_buf[0] = WLAN_EID_SSID;
2689 ie_buf[1] = le32_to_cpu(ssid.length);
2690 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2691
2692 ie_len = le32_to_cpu(ssid.length) + 2;
2693
2694 /* no tsf */
2695 timestamp = 0;
2696
2697 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2698 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2699 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2700 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2701 ssid.essid, signal);
2702
2703 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2704 CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2705 timestamp, capability, beacon_period,
2706 ie_buf, ie_len, signal, GFP_KERNEL);
2707 cfg80211_put_bss(priv->wdev.wiphy, bss);
2708 }
2709
2710 /*
2711 * workers, indication handlers, device poller
2712 */
rndis_wlan_do_link_up_work(struct usbnet * usbdev)2713 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2714 {
2715 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2716 struct ndis_80211_assoc_info *info = NULL;
2717 u8 bssid[ETH_ALEN];
2718 unsigned int resp_ie_len, req_ie_len;
2719 unsigned int offset;
2720 u8 *req_ie, *resp_ie;
2721 int ret;
2722 bool roamed = false;
2723 bool match_bss;
2724
2725 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2726 /* received media connect indication while connected, either
2727 * device reassociated with same AP or roamed to new. */
2728 roamed = true;
2729 }
2730
2731 req_ie_len = 0;
2732 resp_ie_len = 0;
2733 req_ie = NULL;
2734 resp_ie = NULL;
2735
2736 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2737 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2738 if (!info) {
2739 /* No memory? Try resume work later */
2740 set_bit(WORK_LINK_UP, &priv->work_pending);
2741 queue_work(priv->workqueue, &priv->work);
2742 return;
2743 }
2744
2745 /* Get association info IEs from device. */
2746 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2747 if (!ret) {
2748 req_ie_len = le32_to_cpu(info->req_ie_length);
2749 if (req_ie_len > CONTROL_BUFFER_SIZE)
2750 req_ie_len = CONTROL_BUFFER_SIZE;
2751 if (req_ie_len != 0) {
2752 offset = le32_to_cpu(info->offset_req_ies);
2753
2754 if (offset > CONTROL_BUFFER_SIZE)
2755 offset = CONTROL_BUFFER_SIZE;
2756
2757 req_ie = (u8 *)info + offset;
2758
2759 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2760 req_ie_len =
2761 CONTROL_BUFFER_SIZE - offset;
2762 }
2763
2764 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2765 if (resp_ie_len > CONTROL_BUFFER_SIZE)
2766 resp_ie_len = CONTROL_BUFFER_SIZE;
2767 if (resp_ie_len != 0) {
2768 offset = le32_to_cpu(info->offset_resp_ies);
2769
2770 if (offset > CONTROL_BUFFER_SIZE)
2771 offset = CONTROL_BUFFER_SIZE;
2772
2773 resp_ie = (u8 *)info + offset;
2774
2775 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2776 resp_ie_len =
2777 CONTROL_BUFFER_SIZE - offset;
2778 }
2779 } else {
2780 /* Since rndis_wlan_craft_connected_bss() might use info
2781 * later and expects info to contain valid data if
2782 * non-null, free info and set NULL here.
2783 */
2784 kfree(info);
2785 info = NULL;
2786 }
2787 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2788 return;
2789
2790 ret = get_bssid(usbdev, bssid);
2791 if (ret < 0)
2792 memset(bssid, 0, sizeof(bssid));
2793
2794 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2795 bssid, roamed ? " roamed" : "");
2796
2797 /* Internal bss list in device should contain at least the currently
2798 * connected bss and we can get it to cfg80211 with
2799 * rndis_check_bssid_list().
2800 *
2801 * NDIS spec says: "If the device is associated, but the associated
2802 * BSSID is not in its BSSID scan list, then the driver must add an
2803 * entry for the BSSID at the end of the data that it returns in
2804 * response to query of RNDIS_OID_802_11_BSSID_LIST."
2805 *
2806 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2807 */
2808 match_bss = false;
2809 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2810
2811 if (!is_zero_ether_addr(bssid) && !match_bss) {
2812 /* Couldn't get bss from device, we need to manually craft bss
2813 * for cfg80211.
2814 */
2815 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2816 }
2817
2818 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2819 if (!roamed) {
2820 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2821 req_ie_len, resp_ie,
2822 resp_ie_len, 0, GFP_KERNEL);
2823 } else {
2824 struct cfg80211_roam_info roam_info = {
2825 .channel = get_current_channel(usbdev, NULL),
2826 .bssid = bssid,
2827 .req_ie = req_ie,
2828 .req_ie_len = req_ie_len,
2829 .resp_ie = resp_ie,
2830 .resp_ie_len = resp_ie_len,
2831 };
2832
2833 cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2834 }
2835 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2836 cfg80211_ibss_joined(usbdev->net, bssid,
2837 get_current_channel(usbdev, NULL),
2838 GFP_KERNEL);
2839
2840 kfree(info);
2841
2842 priv->connected = true;
2843 memcpy(priv->bssid, bssid, ETH_ALEN);
2844
2845 usbnet_resume_rx(usbdev);
2846 netif_carrier_on(usbdev->net);
2847 }
2848
rndis_wlan_do_link_down_work(struct usbnet * usbdev)2849 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2850 {
2851 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2852
2853 if (priv->connected) {
2854 priv->connected = false;
2855 eth_zero_addr(priv->bssid);
2856
2857 deauthenticate(usbdev);
2858
2859 cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2860 }
2861
2862 netif_carrier_off(usbdev->net);
2863 }
2864
rndis_wlan_worker(struct work_struct * work)2865 static void rndis_wlan_worker(struct work_struct *work)
2866 {
2867 struct rndis_wlan_private *priv =
2868 container_of(work, struct rndis_wlan_private, work);
2869 struct usbnet *usbdev = priv->usbdev;
2870
2871 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2872 rndis_wlan_do_link_up_work(usbdev);
2873
2874 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2875 rndis_wlan_do_link_down_work(usbdev);
2876
2877 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2878 set_multicast_list(usbdev);
2879 }
2880
rndis_wlan_set_multicast_list(struct net_device * dev)2881 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2882 {
2883 struct usbnet *usbdev = netdev_priv(dev);
2884 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2885
2886 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2887 return;
2888
2889 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2890 queue_work(priv->workqueue, &priv->work);
2891 }
2892
rndis_wlan_auth_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2893 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2894 struct ndis_80211_status_indication *indication,
2895 int len)
2896 {
2897 u8 *buf;
2898 const char *type;
2899 int flags, buflen, key_id;
2900 bool pairwise_error, group_error;
2901 struct ndis_80211_auth_request *auth_req;
2902 enum nl80211_key_type key_type;
2903
2904 /* must have at least one array entry */
2905 if (len < offsetof(struct ndis_80211_status_indication, u) +
2906 sizeof(struct ndis_80211_auth_request)) {
2907 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2908 len);
2909 return;
2910 }
2911
2912 buf = (void *)&indication->u.auth_request[0];
2913 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2914
2915 while (buflen >= sizeof(*auth_req)) {
2916 auth_req = (void *)buf;
2917 if (buflen < le32_to_cpu(auth_req->length))
2918 return;
2919 type = "unknown";
2920 flags = le32_to_cpu(auth_req->flags);
2921 pairwise_error = false;
2922 group_error = false;
2923
2924 if (flags & 0x1)
2925 type = "reauth request";
2926 if (flags & 0x2)
2927 type = "key update request";
2928 if (flags & 0x6) {
2929 pairwise_error = true;
2930 type = "pairwise_error";
2931 }
2932 if (flags & 0xe) {
2933 group_error = true;
2934 type = "group_error";
2935 }
2936
2937 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2938 type, le32_to_cpu(auth_req->flags));
2939
2940 if (pairwise_error) {
2941 key_type = NL80211_KEYTYPE_PAIRWISE;
2942 key_id = -1;
2943
2944 cfg80211_michael_mic_failure(usbdev->net,
2945 auth_req->bssid,
2946 key_type, key_id, NULL,
2947 GFP_KERNEL);
2948 }
2949
2950 if (group_error) {
2951 key_type = NL80211_KEYTYPE_GROUP;
2952 key_id = -1;
2953
2954 cfg80211_michael_mic_failure(usbdev->net,
2955 auth_req->bssid,
2956 key_type, key_id, NULL,
2957 GFP_KERNEL);
2958 }
2959
2960 buflen -= le32_to_cpu(auth_req->length);
2961 buf += le32_to_cpu(auth_req->length);
2962 }
2963 }
2964
rndis_wlan_pmkid_cand_list_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2965 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2966 struct ndis_80211_status_indication *indication,
2967 int len)
2968 {
2969 struct ndis_80211_pmkid_cand_list *cand_list;
2970 int list_len, expected_len, i;
2971
2972 if (len < offsetof(struct ndis_80211_status_indication, u) +
2973 sizeof(struct ndis_80211_pmkid_cand_list)) {
2974 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2975 len);
2976 return;
2977 }
2978
2979 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2980 sizeof(struct ndis_80211_pmkid_candidate);
2981 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2982 offsetof(struct ndis_80211_status_indication, u);
2983
2984 if (len < expected_len) {
2985 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2986 len, expected_len);
2987 return;
2988 }
2989
2990 cand_list = &indication->u.cand_list;
2991
2992 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2993 le32_to_cpu(cand_list->version),
2994 le32_to_cpu(cand_list->num_candidates));
2995
2996 if (le32_to_cpu(cand_list->version) != 1)
2997 return;
2998
2999 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3000 struct ndis_80211_pmkid_candidate *cand =
3001 &cand_list->candidate_list[i];
3002 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3003
3004 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3005 i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3006
3007 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3008 preauth, GFP_ATOMIC);
3009 }
3010 }
3011
rndis_wlan_media_specific_indication(struct usbnet * usbdev,struct rndis_indicate * msg,int buflen)3012 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3013 struct rndis_indicate *msg, int buflen)
3014 {
3015 struct ndis_80211_status_indication *indication;
3016 unsigned int len, offset;
3017
3018 offset = offsetof(struct rndis_indicate, status) +
3019 le32_to_cpu(msg->offset);
3020 len = le32_to_cpu(msg->length);
3021
3022 if (len < 8) {
3023 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3024 len);
3025 return;
3026 }
3027
3028 if (len > buflen || offset > buflen || offset + len > buflen) {
3029 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3030 offset + len, buflen);
3031 return;
3032 }
3033
3034 indication = (void *)((u8 *)msg + offset);
3035
3036 switch (le32_to_cpu(indication->status_type)) {
3037 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3038 netdev_info(usbdev->net, "radio state indication: %i\n",
3039 le32_to_cpu(indication->u.radio_status));
3040 return;
3041
3042 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3043 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3044 le32_to_cpu(indication->u.media_stream_mode));
3045 return;
3046
3047 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3048 rndis_wlan_auth_indication(usbdev, indication, len);
3049 return;
3050
3051 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3052 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3053 return;
3054
3055 default:
3056 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3057 le32_to_cpu(indication->status_type));
3058 }
3059 }
3060
rndis_wlan_indication(struct usbnet * usbdev,void * ind,int buflen)3061 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3062 {
3063 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3064 struct rndis_indicate *msg = ind;
3065
3066 switch (le32_to_cpu(msg->status)) {
3067 case RNDIS_STATUS_MEDIA_CONNECT:
3068 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3069 /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3070 * "media connect" indications which confuses driver
3071 * and userspace to think that device is
3072 * roaming/reassociating when it isn't.
3073 */
3074 netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3075 return;
3076 }
3077
3078 usbnet_pause_rx(usbdev);
3079
3080 netdev_info(usbdev->net, "media connect\n");
3081
3082 /* queue work to avoid recursive calls into rndis_command */
3083 set_bit(WORK_LINK_UP, &priv->work_pending);
3084 queue_work(priv->workqueue, &priv->work);
3085 break;
3086
3087 case RNDIS_STATUS_MEDIA_DISCONNECT:
3088 netdev_info(usbdev->net, "media disconnect\n");
3089
3090 /* queue work to avoid recursive calls into rndis_command */
3091 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3092 queue_work(priv->workqueue, &priv->work);
3093 break;
3094
3095 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3096 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3097 break;
3098
3099 default:
3100 netdev_info(usbdev->net, "indication: 0x%08x\n",
3101 le32_to_cpu(msg->status));
3102 break;
3103 }
3104 }
3105
rndis_wlan_get_caps(struct usbnet * usbdev,struct wiphy * wiphy)3106 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3107 {
3108 struct {
3109 __le32 num_items;
3110 __le32 items[8];
3111 } networks_supported;
3112 struct ndis_80211_capability *caps;
3113 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3114 int len, retval, i, n;
3115 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3116
3117 /* determine supported modes */
3118 len = sizeof(networks_supported);
3119 retval = rndis_query_oid(usbdev,
3120 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3121 &networks_supported, &len);
3122 if (retval >= 0) {
3123 n = le32_to_cpu(networks_supported.num_items);
3124 if (n > 8)
3125 n = 8;
3126 for (i = 0; i < n; i++) {
3127 switch (le32_to_cpu(networks_supported.items[i])) {
3128 case NDIS_80211_TYPE_FREQ_HOP:
3129 case NDIS_80211_TYPE_DIRECT_SEQ:
3130 priv->caps |= CAP_MODE_80211B;
3131 break;
3132 case NDIS_80211_TYPE_OFDM_A:
3133 priv->caps |= CAP_MODE_80211A;
3134 break;
3135 case NDIS_80211_TYPE_OFDM_G:
3136 priv->caps |= CAP_MODE_80211G;
3137 break;
3138 }
3139 }
3140 }
3141
3142 /* get device 802.11 capabilities, number of PMKIDs */
3143 caps = (struct ndis_80211_capability *)caps_buf;
3144 len = sizeof(caps_buf);
3145 retval = rndis_query_oid(usbdev,
3146 RNDIS_OID_802_11_CAPABILITY,
3147 caps, &len);
3148 if (retval >= 0) {
3149 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3150 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3151 le32_to_cpu(caps->length),
3152 le32_to_cpu(caps->version),
3153 le32_to_cpu(caps->num_pmkids),
3154 le32_to_cpu(caps->num_auth_encr_pair));
3155 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3156 } else
3157 wiphy->max_num_pmkids = 0;
3158
3159 return retval;
3160 }
3161
rndis_do_cqm(struct usbnet * usbdev,s32 rssi)3162 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3163 {
3164 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3165 enum nl80211_cqm_rssi_threshold_event event;
3166 int thold, hyst, last_event;
3167
3168 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3169 return;
3170 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3171 return;
3172
3173 last_event = priv->last_cqm_event_rssi;
3174 thold = priv->cqm_rssi_thold;
3175 hyst = priv->cqm_rssi_hyst;
3176
3177 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3178 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3179 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3180 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3181 else
3182 return;
3183
3184 priv->last_cqm_event_rssi = rssi;
3185 cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3186 }
3187
3188 #define DEVICE_POLLER_JIFFIES (HZ)
rndis_device_poller(struct work_struct * work)3189 static void rndis_device_poller(struct work_struct *work)
3190 {
3191 struct rndis_wlan_private *priv =
3192 container_of(work, struct rndis_wlan_private,
3193 dev_poller_work.work);
3194 struct usbnet *usbdev = priv->usbdev;
3195 __le32 rssi, tmp;
3196 int len, ret, j;
3197 int update_jiffies = DEVICE_POLLER_JIFFIES;
3198 void *buf;
3199
3200 /* Only check/do workaround when connected. Calling is_associated()
3201 * also polls device with rndis_command() and catches for media link
3202 * indications.
3203 */
3204 if (!is_associated(usbdev)) {
3205 /* Workaround bad scanning in BCM4320a devices with active
3206 * background scanning when not associated.
3207 */
3208 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3209 !priv->scan_request) {
3210 /* Get previous scan results */
3211 rndis_check_bssid_list(usbdev, NULL, NULL);
3212
3213 /* Initiate new scan */
3214 rndis_start_bssid_list_scan(usbdev);
3215 }
3216
3217 goto end;
3218 }
3219
3220 len = sizeof(rssi);
3221 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3222 &rssi, &len);
3223 if (ret == 0) {
3224 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3225 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3226 }
3227
3228 netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3229 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3230
3231 /* Workaround transfer stalls on poor quality links.
3232 * TODO: find right way to fix these stalls (as stalls do not happen
3233 * with ndiswrapper/windows driver). */
3234 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3235 /* Decrease stats worker interval to catch stalls.
3236 * faster. Faster than 400-500ms causes packet loss,
3237 * Slower doesn't catch stalls fast enough.
3238 */
3239 j = msecs_to_jiffies(priv->param_workaround_interval);
3240 if (j > DEVICE_POLLER_JIFFIES)
3241 j = DEVICE_POLLER_JIFFIES;
3242 else if (j <= 0)
3243 j = 1;
3244 update_jiffies = j;
3245
3246 /* Send scan OID. Use of both OIDs is required to get device
3247 * working.
3248 */
3249 tmp = cpu_to_le32(1);
3250 rndis_set_oid(usbdev,
3251 RNDIS_OID_802_11_BSSID_LIST_SCAN,
3252 &tmp, sizeof(tmp));
3253
3254 len = CONTROL_BUFFER_SIZE;
3255 buf = kmalloc(len, GFP_KERNEL);
3256 if (!buf)
3257 goto end;
3258
3259 rndis_query_oid(usbdev,
3260 RNDIS_OID_802_11_BSSID_LIST,
3261 buf, &len);
3262 kfree(buf);
3263 }
3264
3265 end:
3266 if (update_jiffies >= HZ)
3267 update_jiffies = round_jiffies_relative(update_jiffies);
3268 else {
3269 j = round_jiffies_relative(update_jiffies);
3270 if (abs(j - update_jiffies) <= 10)
3271 update_jiffies = j;
3272 }
3273
3274 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3275 update_jiffies);
3276 }
3277
3278 /*
3279 * driver/device initialization
3280 */
rndis_copy_module_params(struct usbnet * usbdev,int device_type)3281 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3282 {
3283 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3284
3285 priv->device_type = device_type;
3286
3287 priv->param_country[0] = modparam_country[0];
3288 priv->param_country[1] = modparam_country[1];
3289 priv->param_country[2] = 0;
3290 priv->param_frameburst = modparam_frameburst;
3291 priv->param_afterburner = modparam_afterburner;
3292 priv->param_power_save = modparam_power_save;
3293 priv->param_power_output = modparam_power_output;
3294 priv->param_roamtrigger = modparam_roamtrigger;
3295 priv->param_roamdelta = modparam_roamdelta;
3296
3297 priv->param_country[0] = toupper(priv->param_country[0]);
3298 priv->param_country[1] = toupper(priv->param_country[1]);
3299 /* doesn't support EU as country code, use FI instead */
3300 if (!strcmp(priv->param_country, "EU"))
3301 strcpy(priv->param_country, "FI");
3302
3303 if (priv->param_power_save < 0)
3304 priv->param_power_save = 0;
3305 else if (priv->param_power_save > 2)
3306 priv->param_power_save = 2;
3307
3308 if (priv->param_power_output < 0)
3309 priv->param_power_output = 0;
3310 else if (priv->param_power_output > 3)
3311 priv->param_power_output = 3;
3312
3313 if (priv->param_roamtrigger < -80)
3314 priv->param_roamtrigger = -80;
3315 else if (priv->param_roamtrigger > -60)
3316 priv->param_roamtrigger = -60;
3317
3318 if (priv->param_roamdelta < 0)
3319 priv->param_roamdelta = 0;
3320 else if (priv->param_roamdelta > 2)
3321 priv->param_roamdelta = 2;
3322
3323 if (modparam_workaround_interval < 0)
3324 priv->param_workaround_interval = 500;
3325 else
3326 priv->param_workaround_interval = modparam_workaround_interval;
3327 }
3328
unknown_early_init(struct usbnet * usbdev)3329 static int unknown_early_init(struct usbnet *usbdev)
3330 {
3331 /* copy module parameters for unknown so that iwconfig reports txpower
3332 * and workaround parameter is copied to private structure correctly.
3333 */
3334 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3335
3336 /* This is unknown device, so do not try set configuration parameters.
3337 */
3338
3339 return 0;
3340 }
3341
bcm4320a_early_init(struct usbnet * usbdev)3342 static int bcm4320a_early_init(struct usbnet *usbdev)
3343 {
3344 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3345 * and workaround parameter is copied to private structure correctly.
3346 */
3347 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3348
3349 /* bcm4320a doesn't handle configuration parameters well. Try
3350 * set any and you get partially zeroed mac and broken device.
3351 */
3352
3353 return 0;
3354 }
3355
bcm4320b_early_init(struct usbnet * usbdev)3356 static int bcm4320b_early_init(struct usbnet *usbdev)
3357 {
3358 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3359 char buf[8];
3360
3361 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3362
3363 /* Early initialization settings, setting these won't have effect
3364 * if called after generic_rndis_bind().
3365 */
3366
3367 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3368 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3369 priv->param_frameburst ? "1" : "0");
3370 rndis_set_config_parameter_str(usbdev, "Afterburner",
3371 priv->param_afterburner ? "1" : "0");
3372 sprintf(buf, "%d", priv->param_power_save);
3373 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3374 sprintf(buf, "%d", priv->param_power_output);
3375 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3376 sprintf(buf, "%d", priv->param_roamtrigger);
3377 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3378 sprintf(buf, "%d", priv->param_roamdelta);
3379 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3380
3381 return 0;
3382 }
3383
3384 /* same as rndis_netdev_ops but with local multicast handler */
3385 static const struct net_device_ops rndis_wlan_netdev_ops = {
3386 .ndo_open = usbnet_open,
3387 .ndo_stop = usbnet_stop,
3388 .ndo_start_xmit = usbnet_start_xmit,
3389 .ndo_tx_timeout = usbnet_tx_timeout,
3390 .ndo_get_stats64 = usbnet_get_stats64,
3391 .ndo_set_mac_address = eth_mac_addr,
3392 .ndo_validate_addr = eth_validate_addr,
3393 .ndo_set_rx_mode = rndis_wlan_set_multicast_list,
3394 };
3395
rndis_wlan_bind(struct usbnet * usbdev,struct usb_interface * intf)3396 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3397 {
3398 struct wiphy *wiphy;
3399 struct rndis_wlan_private *priv;
3400 int retval, len;
3401 __le32 tmp;
3402
3403 /* allocate wiphy and rndis private data
3404 * NOTE: We only support a single virtual interface, so wiphy
3405 * and wireless_dev are somewhat synonymous for this device.
3406 */
3407 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3408 if (!wiphy)
3409 return -ENOMEM;
3410
3411 priv = wiphy_priv(wiphy);
3412 usbdev->net->ieee80211_ptr = &priv->wdev;
3413 priv->wdev.wiphy = wiphy;
3414 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3415
3416 /* These have to be initialized before calling generic_rndis_bind().
3417 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3418 */
3419 usbdev->driver_priv = priv;
3420 priv->usbdev = usbdev;
3421
3422 mutex_init(&priv->command_lock);
3423
3424 /* because rndis_command() sleeps we need to use workqueue */
3425 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3426 if (!priv->workqueue) {
3427 wiphy_free(wiphy);
3428 return -ENOMEM;
3429 }
3430 INIT_WORK(&priv->work, rndis_wlan_worker);
3431 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3432 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3433
3434 /* try bind rndis_host */
3435 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3436 if (retval < 0)
3437 goto fail;
3438
3439 /* generic_rndis_bind set packet filter to multicast_all+
3440 * promisc mode which doesn't work well for our devices (device
3441 * picks up rssi to closest station instead of to access point).
3442 *
3443 * rndis_host wants to avoid all OID as much as possible
3444 * so do promisc/multicast handling in rndis_wlan.
3445 */
3446 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3447
3448 tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3449 retval = rndis_set_oid(usbdev,
3450 RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3451 &tmp, sizeof(tmp));
3452
3453 len = sizeof(tmp);
3454 retval = rndis_query_oid(usbdev,
3455 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3456 &tmp, &len);
3457 priv->multicast_size = le32_to_cpu(tmp);
3458 if (retval < 0 || priv->multicast_size < 0)
3459 priv->multicast_size = 0;
3460 if (priv->multicast_size > 0)
3461 usbdev->net->flags |= IFF_MULTICAST;
3462 else
3463 usbdev->net->flags &= ~IFF_MULTICAST;
3464
3465 /* fill-out wiphy structure and register w/ cfg80211 */
3466 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3467 wiphy->privid = rndis_wiphy_privid;
3468 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3469 | BIT(NL80211_IFTYPE_ADHOC);
3470 wiphy->max_scan_ssids = 1;
3471
3472 /* TODO: fill-out band/encr information based on priv->caps */
3473 rndis_wlan_get_caps(usbdev, wiphy);
3474
3475 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3476 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3477 priv->band.channels = priv->channels;
3478 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3479 priv->band.bitrates = priv->rates;
3480 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3481 wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3482 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3483
3484 memcpy(priv->cipher_suites, rndis_cipher_suites,
3485 sizeof(rndis_cipher_suites));
3486 wiphy->cipher_suites = priv->cipher_suites;
3487 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3488
3489 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3490
3491 if (wiphy_register(wiphy)) {
3492 retval = -ENODEV;
3493 goto fail;
3494 }
3495
3496 set_default_iw_params(usbdev);
3497
3498 priv->power_mode = -1;
3499
3500 /* set default rts/frag */
3501 rndis_set_wiphy_params(wiphy,
3502 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3503
3504 /* turn radio off on init */
3505 priv->radio_on = false;
3506 disassociate(usbdev, false);
3507 netif_carrier_off(usbdev->net);
3508
3509 return 0;
3510
3511 fail:
3512 cancel_delayed_work_sync(&priv->dev_poller_work);
3513 cancel_delayed_work_sync(&priv->scan_work);
3514 cancel_work_sync(&priv->work);
3515 flush_workqueue(priv->workqueue);
3516 destroy_workqueue(priv->workqueue);
3517
3518 wiphy_free(wiphy);
3519 return retval;
3520 }
3521
rndis_wlan_unbind(struct usbnet * usbdev,struct usb_interface * intf)3522 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3523 {
3524 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3525
3526 /* turn radio off */
3527 disassociate(usbdev, false);
3528
3529 cancel_delayed_work_sync(&priv->dev_poller_work);
3530 cancel_delayed_work_sync(&priv->scan_work);
3531 cancel_work_sync(&priv->work);
3532 flush_workqueue(priv->workqueue);
3533 destroy_workqueue(priv->workqueue);
3534
3535 rndis_unbind(usbdev, intf);
3536
3537 wiphy_unregister(priv->wdev.wiphy);
3538 wiphy_free(priv->wdev.wiphy);
3539 }
3540
rndis_wlan_reset(struct usbnet * usbdev)3541 static int rndis_wlan_reset(struct usbnet *usbdev)
3542 {
3543 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3544 int retval;
3545
3546 netdev_dbg(usbdev->net, "%s()\n", __func__);
3547
3548 retval = rndis_reset(usbdev);
3549 if (retval)
3550 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3551
3552 /* rndis_reset cleared multicast list, so restore here.
3553 (set_multicast_list() also turns on current packet filter) */
3554 set_multicast_list(usbdev);
3555
3556 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3557 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3558
3559 return deauthenticate(usbdev);
3560 }
3561
rndis_wlan_stop(struct usbnet * usbdev)3562 static int rndis_wlan_stop(struct usbnet *usbdev)
3563 {
3564 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3565 int retval;
3566 __le32 filter;
3567
3568 netdev_dbg(usbdev->net, "%s()\n", __func__);
3569
3570 retval = disassociate(usbdev, false);
3571
3572 priv->work_pending = 0;
3573 cancel_delayed_work_sync(&priv->dev_poller_work);
3574 cancel_delayed_work_sync(&priv->scan_work);
3575 cancel_work_sync(&priv->work);
3576 flush_workqueue(priv->workqueue);
3577
3578 if (priv->scan_request) {
3579 struct cfg80211_scan_info info = {
3580 .aborted = true,
3581 };
3582
3583 cfg80211_scan_done(priv->scan_request, &info);
3584 priv->scan_request = NULL;
3585 }
3586
3587 /* Set current packet filter zero to block receiving data packets from
3588 device. */
3589 filter = 0;
3590 rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3591 sizeof(filter));
3592
3593 return retval;
3594 }
3595
3596 static const struct driver_info bcm4320b_info = {
3597 .description = "Wireless RNDIS device, BCM4320b based",
3598 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3599 FLAG_AVOID_UNLINK_URBS,
3600 .bind = rndis_wlan_bind,
3601 .unbind = rndis_wlan_unbind,
3602 .status = rndis_status,
3603 .rx_fixup = rndis_rx_fixup,
3604 .tx_fixup = rndis_tx_fixup,
3605 .reset = rndis_wlan_reset,
3606 .stop = rndis_wlan_stop,
3607 .early_init = bcm4320b_early_init,
3608 .indication = rndis_wlan_indication,
3609 };
3610
3611 static const struct driver_info bcm4320a_info = {
3612 .description = "Wireless RNDIS device, BCM4320a based",
3613 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3614 FLAG_AVOID_UNLINK_URBS,
3615 .bind = rndis_wlan_bind,
3616 .unbind = rndis_wlan_unbind,
3617 .status = rndis_status,
3618 .rx_fixup = rndis_rx_fixup,
3619 .tx_fixup = rndis_tx_fixup,
3620 .reset = rndis_wlan_reset,
3621 .stop = rndis_wlan_stop,
3622 .early_init = bcm4320a_early_init,
3623 .indication = rndis_wlan_indication,
3624 };
3625
3626 static const struct driver_info rndis_wlan_info = {
3627 .description = "Wireless RNDIS device",
3628 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3629 FLAG_AVOID_UNLINK_URBS,
3630 .bind = rndis_wlan_bind,
3631 .unbind = rndis_wlan_unbind,
3632 .status = rndis_status,
3633 .rx_fixup = rndis_rx_fixup,
3634 .tx_fixup = rndis_tx_fixup,
3635 .reset = rndis_wlan_reset,
3636 .stop = rndis_wlan_stop,
3637 .early_init = unknown_early_init,
3638 .indication = rndis_wlan_indication,
3639 };
3640
3641 /*-------------------------------------------------------------------------*/
3642
3643 static const struct usb_device_id products [] = {
3644 #define RNDIS_MASTER_INTERFACE \
3645 .bInterfaceClass = USB_CLASS_COMM, \
3646 .bInterfaceSubClass = 2 /* ACM */, \
3647 .bInterfaceProtocol = 0x0ff
3648
3649 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3650 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3651 */
3652 {
3653 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3654 | USB_DEVICE_ID_MATCH_DEVICE,
3655 .idVendor = 0x0411,
3656 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3657 RNDIS_MASTER_INTERFACE,
3658 .driver_info = (unsigned long) &bcm4320b_info,
3659 }, {
3660 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3661 | USB_DEVICE_ID_MATCH_DEVICE,
3662 .idVendor = 0x0baf,
3663 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3664 RNDIS_MASTER_INTERFACE,
3665 .driver_info = (unsigned long) &bcm4320b_info,
3666 }, {
3667 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3668 | USB_DEVICE_ID_MATCH_DEVICE,
3669 .idVendor = 0x050d,
3670 .idProduct = 0x011b, /* Belkin F5D7051 */
3671 RNDIS_MASTER_INTERFACE,
3672 .driver_info = (unsigned long) &bcm4320b_info,
3673 }, {
3674 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3675 | USB_DEVICE_ID_MATCH_DEVICE,
3676 .idVendor = 0x1799, /* Belkin has two vendor ids */
3677 .idProduct = 0x011b, /* Belkin F5D7051 */
3678 RNDIS_MASTER_INTERFACE,
3679 .driver_info = (unsigned long) &bcm4320b_info,
3680 }, {
3681 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3682 | USB_DEVICE_ID_MATCH_DEVICE,
3683 .idVendor = 0x13b1,
3684 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3685 RNDIS_MASTER_INTERFACE,
3686 .driver_info = (unsigned long) &bcm4320b_info,
3687 }, {
3688 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3689 | USB_DEVICE_ID_MATCH_DEVICE,
3690 .idVendor = 0x13b1,
3691 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3692 RNDIS_MASTER_INTERFACE,
3693 .driver_info = (unsigned long) &bcm4320b_info,
3694 }, {
3695 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3696 | USB_DEVICE_ID_MATCH_DEVICE,
3697 .idVendor = 0x0b05,
3698 .idProduct = 0x1717, /* Asus WL169gE */
3699 RNDIS_MASTER_INTERFACE,
3700 .driver_info = (unsigned long) &bcm4320b_info,
3701 }, {
3702 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3703 | USB_DEVICE_ID_MATCH_DEVICE,
3704 .idVendor = 0x0a5c,
3705 .idProduct = 0xd11b, /* Eminent EM4045 */
3706 RNDIS_MASTER_INTERFACE,
3707 .driver_info = (unsigned long) &bcm4320b_info,
3708 }, {
3709 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3710 | USB_DEVICE_ID_MATCH_DEVICE,
3711 .idVendor = 0x1690,
3712 .idProduct = 0x0715, /* BT Voyager 1055 */
3713 RNDIS_MASTER_INTERFACE,
3714 .driver_info = (unsigned long) &bcm4320b_info,
3715 },
3716 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3717 * parameters available, hardware probably contain older firmware version with
3718 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3719 */
3720 {
3721 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3722 | USB_DEVICE_ID_MATCH_DEVICE,
3723 .idVendor = 0x13b1,
3724 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3725 RNDIS_MASTER_INTERFACE,
3726 .driver_info = (unsigned long) &bcm4320a_info,
3727 }, {
3728 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3729 | USB_DEVICE_ID_MATCH_DEVICE,
3730 .idVendor = 0x0baf,
3731 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3732 RNDIS_MASTER_INTERFACE,
3733 .driver_info = (unsigned long) &bcm4320a_info,
3734 }, {
3735 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3736 | USB_DEVICE_ID_MATCH_DEVICE,
3737 .idVendor = 0x0411,
3738 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3739 RNDIS_MASTER_INTERFACE,
3740 .driver_info = (unsigned long) &bcm4320a_info,
3741 },
3742 /* Generic Wireless RNDIS devices that we don't have exact
3743 * idVendor/idProduct/chip yet.
3744 */
3745 {
3746 /* RNDIS is MSFT's un-official variant of CDC ACM */
3747 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3748 .driver_info = (unsigned long) &rndis_wlan_info,
3749 }, {
3750 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3751 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3752 .driver_info = (unsigned long) &rndis_wlan_info,
3753 },
3754 { }, // END
3755 };
3756 MODULE_DEVICE_TABLE(usb, products);
3757
3758 static struct usb_driver rndis_wlan_driver = {
3759 .name = "rndis_wlan",
3760 .id_table = products,
3761 .probe = usbnet_probe,
3762 .disconnect = usbnet_disconnect,
3763 .suspend = usbnet_suspend,
3764 .resume = usbnet_resume,
3765 .disable_hub_initiated_lpm = 1,
3766 };
3767
3768 module_usb_driver(rndis_wlan_driver);
3769
3770 MODULE_AUTHOR("Bjorge Dijkstra");
3771 MODULE_AUTHOR("Jussi Kivilinna");
3772 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3773 MODULE_LICENSE("GPL");
3774
3775