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