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