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 u8 bssid_data[];
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 int link_id, u8 key_index, bool pairwise,
493 const u8 *mac_addr, struct key_params *params);
494
495 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
496 int link_id, u8 key_index, bool pairwise,
497 const u8 *mac_addr);
498
499 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
500 int link_id, u8 key_index, bool unicast,
501 bool multicast);
502
503 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
504 const u8 *mac, struct station_info *sinfo);
505
506 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
507 int idx, u8 *mac, struct station_info *sinfo);
508
509 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
510 struct cfg80211_pmksa *pmksa);
511
512 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
513 struct cfg80211_pmksa *pmksa);
514
515 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
516
517 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
518 bool enabled, int timeout);
519
520 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
521 struct net_device *dev,
522 s32 rssi_thold, u32 rssi_hyst);
523
524 static const struct cfg80211_ops rndis_config_ops = {
525 .change_virtual_intf = rndis_change_virtual_intf,
526 .scan = rndis_scan,
527 .set_wiphy_params = rndis_set_wiphy_params,
528 .set_tx_power = rndis_set_tx_power,
529 .get_tx_power = rndis_get_tx_power,
530 .connect = rndis_connect,
531 .disconnect = rndis_disconnect,
532 .join_ibss = rndis_join_ibss,
533 .leave_ibss = rndis_leave_ibss,
534 .add_key = rndis_add_key,
535 .del_key = rndis_del_key,
536 .set_default_key = rndis_set_default_key,
537 .get_station = rndis_get_station,
538 .dump_station = rndis_dump_station,
539 .set_pmksa = rndis_set_pmksa,
540 .del_pmksa = rndis_del_pmksa,
541 .flush_pmksa = rndis_flush_pmksa,
542 .set_power_mgmt = rndis_set_power_mgmt,
543 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
544 };
545
546 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
547
548
get_rndis_wlan_priv(struct usbnet * dev)549 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
550 {
551 return (struct rndis_wlan_private *)dev->driver_priv;
552 }
553
get_bcm4320_power_dbm(struct rndis_wlan_private * priv)554 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
555 {
556 switch (priv->param_power_output) {
557 default:
558 case 3:
559 return BCM4320_DEFAULT_TXPOWER_DBM_100;
560 case 2:
561 return BCM4320_DEFAULT_TXPOWER_DBM_75;
562 case 1:
563 return BCM4320_DEFAULT_TXPOWER_DBM_50;
564 case 0:
565 return BCM4320_DEFAULT_TXPOWER_DBM_25;
566 }
567 }
568
is_wpa_key(struct rndis_wlan_private * priv,u8 idx)569 static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
570 {
571 int cipher = priv->encr_keys[idx].cipher;
572
573 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
574 cipher == WLAN_CIPHER_SUITE_TKIP);
575 }
576
rndis_cipher_to_alg(u32 cipher)577 static int rndis_cipher_to_alg(u32 cipher)
578 {
579 switch (cipher) {
580 default:
581 return RNDIS_WLAN_ALG_NONE;
582 case WLAN_CIPHER_SUITE_WEP40:
583 case WLAN_CIPHER_SUITE_WEP104:
584 return RNDIS_WLAN_ALG_WEP;
585 case WLAN_CIPHER_SUITE_TKIP:
586 return RNDIS_WLAN_ALG_TKIP;
587 case WLAN_CIPHER_SUITE_CCMP:
588 return RNDIS_WLAN_ALG_CCMP;
589 }
590 }
591
rndis_akm_suite_to_key_mgmt(u32 akm_suite)592 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
593 {
594 switch (akm_suite) {
595 default:
596 return RNDIS_WLAN_KEY_MGMT_NONE;
597 case WLAN_AKM_SUITE_8021X:
598 return RNDIS_WLAN_KEY_MGMT_802_1X;
599 case WLAN_AKM_SUITE_PSK:
600 return RNDIS_WLAN_KEY_MGMT_PSK;
601 }
602 }
603
604 #ifdef DEBUG
oid_to_string(u32 oid)605 static const char *oid_to_string(u32 oid)
606 {
607 switch (oid) {
608 #define OID_STR(oid) case oid: return(#oid)
609 /* from rndis_host.h */
610 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
611 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
612 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
613 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
614
615 /* from rndis_wlan.c */
616 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
617 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
618
619 OID_STR(RNDIS_OID_GEN_XMIT_OK);
620 OID_STR(RNDIS_OID_GEN_RCV_OK);
621 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
622 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
623 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
624
625 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
626 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
627 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
628
629 OID_STR(RNDIS_OID_802_11_BSSID);
630 OID_STR(RNDIS_OID_802_11_SSID);
631 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
632 OID_STR(RNDIS_OID_802_11_ADD_WEP);
633 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
634 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
635 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
636 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
637 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
638 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
639 OID_STR(RNDIS_OID_802_11_ADD_KEY);
640 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
641 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
642 OID_STR(RNDIS_OID_802_11_CAPABILITY);
643 OID_STR(RNDIS_OID_802_11_PMKID);
644 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
645 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
646 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
647 OID_STR(RNDIS_OID_802_11_RSSI);
648 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
649 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
650 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
651 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
652 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
653 OID_STR(RNDIS_OID_802_11_POWER_MODE);
654 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
655 #undef OID_STR
656 }
657
658 return "?";
659 }
660 #else
oid_to_string(u32 oid)661 static const char *oid_to_string(u32 oid)
662 {
663 return "?";
664 }
665 #endif
666
667 /* translate error code */
rndis_error_status(__le32 rndis_status)668 static int rndis_error_status(__le32 rndis_status)
669 {
670 int ret = -EINVAL;
671 switch (le32_to_cpu(rndis_status)) {
672 case RNDIS_STATUS_SUCCESS:
673 ret = 0;
674 break;
675 case RNDIS_STATUS_FAILURE:
676 case RNDIS_STATUS_INVALID_DATA:
677 ret = -EINVAL;
678 break;
679 case RNDIS_STATUS_NOT_SUPPORTED:
680 ret = -EOPNOTSUPP;
681 break;
682 case RNDIS_STATUS_ADAPTER_NOT_READY:
683 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
684 ret = -EBUSY;
685 break;
686 }
687 return ret;
688 }
689
rndis_query_oid(struct usbnet * dev,u32 oid,void * data,int * len)690 static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
691 {
692 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
693 union {
694 void *buf;
695 struct rndis_msg_hdr *header;
696 struct rndis_query *get;
697 struct rndis_query_c *get_c;
698 } u;
699 int ret, buflen;
700 int resplen, respoffs, copylen;
701
702 buflen = *len + sizeof(*u.get);
703 if (buflen < CONTROL_BUFFER_SIZE)
704 buflen = CONTROL_BUFFER_SIZE;
705
706 if (buflen > COMMAND_BUFFER_SIZE) {
707 u.buf = kmalloc(buflen, GFP_KERNEL);
708 if (!u.buf)
709 return -ENOMEM;
710 } else {
711 u.buf = priv->command_buffer;
712 }
713
714 mutex_lock(&priv->command_lock);
715
716 memset(u.get, 0, sizeof *u.get);
717 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
718 u.get->msg_len = cpu_to_le32(sizeof *u.get);
719 u.get->oid = cpu_to_le32(oid);
720
721 priv->current_command_oid = oid;
722 ret = rndis_command(dev, u.header, buflen);
723 priv->current_command_oid = 0;
724 if (ret < 0)
725 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
726 __func__, oid_to_string(oid), ret,
727 le32_to_cpu(u.get_c->status));
728
729 if (ret == 0) {
730 resplen = le32_to_cpu(u.get_c->len);
731 respoffs = le32_to_cpu(u.get_c->offset) + 8;
732
733 if (respoffs > buflen) {
734 /* Device returned data offset outside buffer, error. */
735 netdev_dbg(dev->net, "%s(%s): received invalid "
736 "data offset: %d > %d\n", __func__,
737 oid_to_string(oid), respoffs, buflen);
738
739 ret = -EINVAL;
740 goto exit_unlock;
741 }
742
743 if ((resplen + respoffs) > buflen) {
744 /* Device would have returned more data if buffer would
745 * have been big enough. Copy just the bits that we got.
746 */
747 copylen = buflen - respoffs;
748 } else {
749 copylen = resplen;
750 }
751
752 if (copylen > *len)
753 copylen = *len;
754
755 memcpy(data, u.buf + respoffs, copylen);
756
757 *len = resplen;
758
759 ret = rndis_error_status(u.get_c->status);
760 if (ret < 0)
761 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
762 __func__, oid_to_string(oid),
763 le32_to_cpu(u.get_c->status), ret);
764 }
765
766 exit_unlock:
767 mutex_unlock(&priv->command_lock);
768
769 if (u.buf != priv->command_buffer)
770 kfree(u.buf);
771 return ret;
772 }
773
rndis_set_oid(struct usbnet * dev,u32 oid,const void * data,int len)774 static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
775 int len)
776 {
777 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
778 union {
779 void *buf;
780 struct rndis_msg_hdr *header;
781 struct rndis_set *set;
782 struct rndis_set_c *set_c;
783 } u;
784 int ret, buflen;
785
786 buflen = len + sizeof(*u.set);
787 if (buflen < CONTROL_BUFFER_SIZE)
788 buflen = CONTROL_BUFFER_SIZE;
789
790 if (buflen > COMMAND_BUFFER_SIZE) {
791 u.buf = kmalloc(buflen, GFP_KERNEL);
792 if (!u.buf)
793 return -ENOMEM;
794 } else {
795 u.buf = priv->command_buffer;
796 }
797
798 mutex_lock(&priv->command_lock);
799
800 memset(u.set, 0, sizeof *u.set);
801 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
802 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
803 u.set->oid = cpu_to_le32(oid);
804 u.set->len = cpu_to_le32(len);
805 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
806 u.set->handle = cpu_to_le32(0);
807 memcpy(u.buf + sizeof(*u.set), data, len);
808
809 priv->current_command_oid = oid;
810 ret = rndis_command(dev, u.header, buflen);
811 priv->current_command_oid = 0;
812 if (ret < 0)
813 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
814 __func__, oid_to_string(oid), ret,
815 le32_to_cpu(u.set_c->status));
816
817 if (ret == 0) {
818 ret = rndis_error_status(u.set_c->status);
819
820 if (ret < 0)
821 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
822 __func__, oid_to_string(oid),
823 le32_to_cpu(u.set_c->status), ret);
824 }
825
826 mutex_unlock(&priv->command_lock);
827
828 if (u.buf != priv->command_buffer)
829 kfree(u.buf);
830 return ret;
831 }
832
rndis_reset(struct usbnet * usbdev)833 static int rndis_reset(struct usbnet *usbdev)
834 {
835 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
836 struct rndis_reset *reset;
837 int ret;
838
839 mutex_lock(&priv->command_lock);
840
841 reset = (void *)priv->command_buffer;
842 memset(reset, 0, sizeof(*reset));
843 reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
844 reset->msg_len = cpu_to_le32(sizeof(*reset));
845 priv->current_command_oid = 0;
846 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
847
848 mutex_unlock(&priv->command_lock);
849
850 if (ret < 0)
851 return ret;
852 return 0;
853 }
854
855 /*
856 * Specs say that we can only set config parameters only soon after device
857 * initialization.
858 * value_type: 0 = u32, 2 = unicode string
859 */
rndis_set_config_parameter(struct usbnet * dev,char * param,int value_type,void * value)860 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
861 int value_type, void *value)
862 {
863 struct ndis_config_param *infobuf;
864 int value_len, info_len, param_len, ret, i;
865 __le16 *unibuf;
866 __le32 *dst_value;
867
868 if (value_type == 0)
869 value_len = sizeof(__le32);
870 else if (value_type == 2)
871 value_len = strlen(value) * sizeof(__le16);
872 else
873 return -EINVAL;
874
875 param_len = strlen(param) * sizeof(__le16);
876 info_len = sizeof(*infobuf) + param_len + value_len;
877
878 #ifdef DEBUG
879 info_len += 12;
880 #endif
881 infobuf = kmalloc(info_len, GFP_KERNEL);
882 if (!infobuf)
883 return -ENOMEM;
884
885 #ifdef DEBUG
886 info_len -= 12;
887 /* extra 12 bytes are for padding (debug output) */
888 memset(infobuf, 0xCC, info_len + 12);
889 #endif
890
891 if (value_type == 2)
892 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
893 param, (u8 *)value);
894 else
895 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
896 param, *(u32 *)value);
897
898 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
899 infobuf->name_length = cpu_to_le32(param_len);
900 infobuf->type = cpu_to_le32(value_type);
901 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
902 infobuf->value_length = cpu_to_le32(value_len);
903
904 /* simple string to unicode string conversion */
905 unibuf = (void *)infobuf + sizeof(*infobuf);
906 for (i = 0; i < param_len / sizeof(__le16); i++)
907 unibuf[i] = cpu_to_le16(param[i]);
908
909 if (value_type == 2) {
910 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
911 for (i = 0; i < value_len / sizeof(__le16); i++)
912 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
913 } else {
914 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
915 *dst_value = cpu_to_le32(*(u32 *)value);
916 }
917
918 #ifdef DEBUG
919 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
920 for (i = 0; i < info_len; i += 12) {
921 u32 *tmp = (u32 *)((u8 *)infobuf + i);
922 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
923 cpu_to_be32(tmp[0]),
924 cpu_to_be32(tmp[1]),
925 cpu_to_be32(tmp[2]));
926 }
927 #endif
928
929 ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
930 infobuf, info_len);
931 if (ret != 0)
932 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
933 ret);
934
935 kfree(infobuf);
936 return ret;
937 }
938
rndis_set_config_parameter_str(struct usbnet * dev,char * param,char * value)939 static int rndis_set_config_parameter_str(struct usbnet *dev,
940 char *param, char *value)
941 {
942 return rndis_set_config_parameter(dev, param, 2, value);
943 }
944
945 /*
946 * data conversion functions
947 */
level_to_qual(int level)948 static int level_to_qual(int level)
949 {
950 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
951 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
952 }
953
954 /*
955 * common functions
956 */
957 static int set_infra_mode(struct usbnet *usbdev, int mode);
958 static void restore_keys(struct usbnet *usbdev);
959 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
960 bool *matched);
961
rndis_start_bssid_list_scan(struct usbnet * usbdev)962 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
963 {
964 __le32 tmp;
965
966 /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
967 tmp = cpu_to_le32(1);
968 return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
969 sizeof(tmp));
970 }
971
set_essid(struct usbnet * usbdev,struct ndis_80211_ssid * ssid)972 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
973 {
974 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
975 int ret;
976
977 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
978 ssid, sizeof(*ssid));
979 if (ret < 0) {
980 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
981 return ret;
982 }
983 if (ret == 0) {
984 priv->radio_on = true;
985 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
986 }
987
988 return ret;
989 }
990
set_bssid(struct usbnet * usbdev,const u8 * bssid)991 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
992 {
993 int ret;
994
995 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
996 bssid, ETH_ALEN);
997 if (ret < 0) {
998 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
999 bssid, ret);
1000 return ret;
1001 }
1002
1003 return ret;
1004 }
1005
clear_bssid(struct usbnet * usbdev)1006 static int clear_bssid(struct usbnet *usbdev)
1007 {
1008 static const u8 broadcast_mac[ETH_ALEN] = {
1009 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1010 };
1011
1012 return set_bssid(usbdev, broadcast_mac);
1013 }
1014
get_bssid(struct usbnet * usbdev,u8 bssid[ETH_ALEN])1015 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1016 {
1017 int ret, len;
1018
1019 len = ETH_ALEN;
1020 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1021 bssid, &len);
1022
1023 if (ret != 0)
1024 eth_zero_addr(bssid);
1025
1026 return ret;
1027 }
1028
get_association_info(struct usbnet * usbdev,struct ndis_80211_assoc_info * info,int len)1029 static int get_association_info(struct usbnet *usbdev,
1030 struct ndis_80211_assoc_info *info, int len)
1031 {
1032 return rndis_query_oid(usbdev,
1033 RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1034 info, &len);
1035 }
1036
is_associated(struct usbnet * usbdev)1037 static bool is_associated(struct usbnet *usbdev)
1038 {
1039 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1040 u8 bssid[ETH_ALEN];
1041
1042 if (!priv->radio_on)
1043 return false;
1044
1045 return (get_bssid(usbdev, bssid) == 0 && !is_zero_ether_addr(bssid));
1046 }
1047
disassociate(struct usbnet * usbdev,bool reset_ssid)1048 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1049 {
1050 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1051 struct ndis_80211_ssid ssid;
1052 int i, ret = 0;
1053
1054 if (priv->radio_on) {
1055 ret = rndis_set_oid(usbdev,
1056 RNDIS_OID_802_11_DISASSOCIATE,
1057 NULL, 0);
1058 if (ret == 0) {
1059 priv->radio_on = false;
1060 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1061 __func__);
1062
1063 if (reset_ssid)
1064 msleep(100);
1065 }
1066 }
1067
1068 /* disassociate causes radio to be turned off; if reset_ssid
1069 * is given, set random ssid to enable radio */
1070 if (reset_ssid) {
1071 /* Set device to infrastructure mode so we don't get ad-hoc
1072 * 'media connect' indications with the random ssid.
1073 */
1074 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1075
1076 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1077 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1078 ssid.essid[0] = 0x1;
1079 ssid.essid[1] = 0xff;
1080 for (i = 2; i < sizeof(ssid.essid); i++)
1081 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1082 ret = set_essid(usbdev, &ssid);
1083 }
1084 return ret;
1085 }
1086
set_auth_mode(struct usbnet * usbdev,u32 wpa_version,enum nl80211_auth_type auth_type,int keymgmt)1087 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1088 enum nl80211_auth_type auth_type, int keymgmt)
1089 {
1090 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1091 __le32 tmp;
1092 int auth_mode, ret;
1093
1094 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1095 __func__, wpa_version, auth_type, keymgmt);
1096
1097 if (wpa_version & NL80211_WPA_VERSION_2) {
1098 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1099 auth_mode = NDIS_80211_AUTH_WPA2;
1100 else
1101 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1102 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1103 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1104 auth_mode = NDIS_80211_AUTH_WPA;
1105 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1106 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1107 else
1108 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1109 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1110 auth_mode = NDIS_80211_AUTH_SHARED;
1111 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1112 auth_mode = NDIS_80211_AUTH_OPEN;
1113 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1114 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1115 else
1116 return -ENOTSUPP;
1117
1118 tmp = cpu_to_le32(auth_mode);
1119 ret = rndis_set_oid(usbdev,
1120 RNDIS_OID_802_11_AUTHENTICATION_MODE,
1121 &tmp, sizeof(tmp));
1122 if (ret != 0) {
1123 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1124 ret);
1125 return ret;
1126 }
1127
1128 priv->wpa_version = wpa_version;
1129
1130 return 0;
1131 }
1132
set_priv_filter(struct usbnet * usbdev)1133 static int set_priv_filter(struct usbnet *usbdev)
1134 {
1135 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1136 __le32 tmp;
1137
1138 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1139 __func__, priv->wpa_version);
1140
1141 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1142 priv->wpa_version & NL80211_WPA_VERSION_1)
1143 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1144 else
1145 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1146
1147 return rndis_set_oid(usbdev,
1148 RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1149 sizeof(tmp));
1150 }
1151
set_encr_mode(struct usbnet * usbdev,int pairwise,int groupwise)1152 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1153 {
1154 __le32 tmp;
1155 int encr_mode, ret;
1156
1157 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1158 __func__, pairwise, groupwise);
1159
1160 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1161 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1162 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1163 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1164 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1165 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1166 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1167 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1168 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1169 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1170 else
1171 encr_mode = NDIS_80211_ENCR_DISABLED;
1172
1173 tmp = cpu_to_le32(encr_mode);
1174 ret = rndis_set_oid(usbdev,
1175 RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1176 sizeof(tmp));
1177 if (ret != 0) {
1178 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1179 ret);
1180 return ret;
1181 }
1182
1183 return 0;
1184 }
1185
set_infra_mode(struct usbnet * usbdev,int mode)1186 static int set_infra_mode(struct usbnet *usbdev, int mode)
1187 {
1188 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1189 __le32 tmp;
1190 int ret;
1191
1192 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1193 __func__, priv->infra_mode);
1194
1195 tmp = cpu_to_le32(mode);
1196 ret = rndis_set_oid(usbdev,
1197 RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1198 &tmp, sizeof(tmp));
1199 if (ret != 0) {
1200 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1201 ret);
1202 return ret;
1203 }
1204
1205 /* NDIS drivers clear keys when infrastructure mode is
1206 * changed. But Linux tools assume otherwise. So set the
1207 * keys */
1208 restore_keys(usbdev);
1209
1210 priv->infra_mode = mode;
1211 return 0;
1212 }
1213
set_rts_threshold(struct usbnet * usbdev,u32 rts_threshold)1214 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1215 {
1216 __le32 tmp;
1217
1218 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1219
1220 if (rts_threshold == -1 || rts_threshold > 2347)
1221 rts_threshold = 2347;
1222
1223 tmp = cpu_to_le32(rts_threshold);
1224 return rndis_set_oid(usbdev,
1225 RNDIS_OID_802_11_RTS_THRESHOLD,
1226 &tmp, sizeof(tmp));
1227 }
1228
set_frag_threshold(struct usbnet * usbdev,u32 frag_threshold)1229 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1230 {
1231 __le32 tmp;
1232
1233 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1234
1235 if (frag_threshold < 256 || frag_threshold > 2346)
1236 frag_threshold = 2346;
1237
1238 tmp = cpu_to_le32(frag_threshold);
1239 return rndis_set_oid(usbdev,
1240 RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1241 &tmp, sizeof(tmp));
1242 }
1243
set_default_iw_params(struct usbnet * usbdev)1244 static void set_default_iw_params(struct usbnet *usbdev)
1245 {
1246 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1247 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1248 RNDIS_WLAN_KEY_MGMT_NONE);
1249 set_priv_filter(usbdev);
1250 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1251 }
1252
deauthenticate(struct usbnet * usbdev)1253 static int deauthenticate(struct usbnet *usbdev)
1254 {
1255 int ret;
1256
1257 ret = disassociate(usbdev, true);
1258 set_default_iw_params(usbdev);
1259 return ret;
1260 }
1261
set_channel(struct usbnet * usbdev,int channel)1262 static int set_channel(struct usbnet *usbdev, int channel)
1263 {
1264 struct ndis_80211_conf config;
1265 unsigned int dsconfig;
1266 int len, ret;
1267
1268 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1269
1270 /* this OID is valid only when not associated */
1271 if (is_associated(usbdev))
1272 return 0;
1273
1274 dsconfig = 1000 *
1275 ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1276
1277 len = sizeof(config);
1278 ret = rndis_query_oid(usbdev,
1279 RNDIS_OID_802_11_CONFIGURATION,
1280 &config, &len);
1281 if (ret < 0) {
1282 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1283 __func__);
1284 return ret;
1285 }
1286
1287 config.ds_config = cpu_to_le32(dsconfig);
1288 ret = rndis_set_oid(usbdev,
1289 RNDIS_OID_802_11_CONFIGURATION,
1290 &config, sizeof(config));
1291
1292 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1293
1294 return ret;
1295 }
1296
get_current_channel(struct usbnet * usbdev,u32 * beacon_period)1297 static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1298 u32 *beacon_period)
1299 {
1300 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1301 struct ieee80211_channel *channel;
1302 struct ndis_80211_conf config;
1303 int len, ret;
1304
1305 /* Get channel and beacon interval */
1306 len = sizeof(config);
1307 ret = rndis_query_oid(usbdev,
1308 RNDIS_OID_802_11_CONFIGURATION,
1309 &config, &len);
1310 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1311 __func__, ret);
1312 if (ret < 0)
1313 return NULL;
1314
1315 channel = ieee80211_get_channel(priv->wdev.wiphy,
1316 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1317 if (!channel)
1318 return NULL;
1319
1320 if (beacon_period)
1321 *beacon_period = le32_to_cpu(config.beacon_period);
1322 return channel;
1323 }
1324
1325 /* index must be 0 - N, as per NDIS */
add_wep_key(struct usbnet * usbdev,const u8 * key,int key_len,u8 index)1326 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1327 u8 index)
1328 {
1329 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1330 struct ndis_80211_wep_key ndis_key;
1331 u32 cipher;
1332 int ret;
1333
1334 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1335 __func__, index, key_len);
1336
1337 if (index >= RNDIS_WLAN_NUM_KEYS)
1338 return -EINVAL;
1339
1340 if (key_len == 5)
1341 cipher = WLAN_CIPHER_SUITE_WEP40;
1342 else if (key_len == 13)
1343 cipher = WLAN_CIPHER_SUITE_WEP104;
1344 else
1345 return -EINVAL;
1346
1347 memset(&ndis_key, 0, sizeof(ndis_key));
1348
1349 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1350 ndis_key.length = cpu_to_le32(key_len);
1351 ndis_key.index = cpu_to_le32(index);
1352 memcpy(&ndis_key.material, key, key_len);
1353
1354 if (index == priv->encr_tx_key_index) {
1355 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1356 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1357 RNDIS_WLAN_ALG_NONE);
1358 if (ret)
1359 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1360 ret);
1361 }
1362
1363 ret = rndis_set_oid(usbdev,
1364 RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1365 sizeof(ndis_key));
1366 if (ret != 0) {
1367 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1368 index + 1, ret);
1369 return ret;
1370 }
1371
1372 priv->encr_keys[index].len = key_len;
1373 priv->encr_keys[index].cipher = cipher;
1374 memcpy(&priv->encr_keys[index].material, key, key_len);
1375 eth_broadcast_addr(priv->encr_keys[index].bssid);
1376
1377 return 0;
1378 }
1379
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)1380 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1381 u8 index, const u8 *addr, const u8 *rx_seq,
1382 int seq_len, u32 cipher, __le32 flags)
1383 {
1384 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1385 struct ndis_80211_key ndis_key;
1386 bool is_addr_ok;
1387 int ret;
1388
1389 if (index >= RNDIS_WLAN_NUM_KEYS) {
1390 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1391 __func__, index);
1392 return -EINVAL;
1393 }
1394 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1395 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1396 __func__, key_len);
1397 return -EINVAL;
1398 }
1399 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1400 if (!rx_seq || seq_len <= 0) {
1401 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1402 __func__);
1403 return -EINVAL;
1404 }
1405 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1406 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1407 return -EINVAL;
1408 }
1409 }
1410
1411 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1412 !is_broadcast_ether_addr(addr);
1413 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1414 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1415 __func__, addr);
1416 return -EINVAL;
1417 }
1418
1419 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1420 __func__, index,
1421 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1422 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1423 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1424
1425 memset(&ndis_key, 0, sizeof(ndis_key));
1426
1427 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1428 sizeof(ndis_key.material) + key_len);
1429 ndis_key.length = cpu_to_le32(key_len);
1430 ndis_key.index = cpu_to_le32(index) | flags;
1431
1432 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1433 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1434 * different order than NDIS spec, so swap the order here. */
1435 memcpy(ndis_key.material, key, 16);
1436 memcpy(ndis_key.material + 16, key + 24, 8);
1437 memcpy(ndis_key.material + 24, key + 16, 8);
1438 } else
1439 memcpy(ndis_key.material, key, key_len);
1440
1441 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1442 memcpy(ndis_key.rsc, rx_seq, seq_len);
1443
1444 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1445 /* pairwise key */
1446 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1447 } else {
1448 /* group key */
1449 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1450 eth_broadcast_addr(ndis_key.bssid);
1451 else
1452 get_bssid(usbdev, ndis_key.bssid);
1453 }
1454
1455 ret = rndis_set_oid(usbdev,
1456 RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1457 le32_to_cpu(ndis_key.size));
1458 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1459 __func__, ret);
1460 if (ret != 0)
1461 return ret;
1462
1463 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1464 priv->encr_keys[index].len = key_len;
1465 priv->encr_keys[index].cipher = cipher;
1466 memcpy(&priv->encr_keys[index].material, key, key_len);
1467 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1468 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1469 else
1470 eth_broadcast_addr(priv->encr_keys[index].bssid);
1471
1472 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1473 priv->encr_tx_key_index = index;
1474
1475 return 0;
1476 }
1477
restore_key(struct usbnet * usbdev,u8 key_idx)1478 static int restore_key(struct usbnet *usbdev, u8 key_idx)
1479 {
1480 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1481 struct rndis_wlan_encr_key key;
1482
1483 if (is_wpa_key(priv, key_idx))
1484 return 0;
1485
1486 key = priv->encr_keys[key_idx];
1487
1488 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1489
1490 if (key.len == 0)
1491 return 0;
1492
1493 return add_wep_key(usbdev, key.material, key.len, key_idx);
1494 }
1495
restore_keys(struct usbnet * usbdev)1496 static void restore_keys(struct usbnet *usbdev)
1497 {
1498 int i;
1499
1500 for (i = 0; i < 4; i++)
1501 restore_key(usbdev, i);
1502 }
1503
clear_key(struct rndis_wlan_private * priv,u8 idx)1504 static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1505 {
1506 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1507 }
1508
1509 /* remove_key is for both wep and wpa */
remove_key(struct usbnet * usbdev,u8 index,const u8 * bssid)1510 static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1511 {
1512 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1513 struct ndis_80211_remove_key remove_key;
1514 __le32 keyindex;
1515 bool is_wpa;
1516 int ret;
1517
1518 if (index >= RNDIS_WLAN_NUM_KEYS)
1519 return -ENOENT;
1520
1521 if (priv->encr_keys[index].len == 0)
1522 return 0;
1523
1524 is_wpa = is_wpa_key(priv, index);
1525
1526 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1527 __func__, index, is_wpa ? "wpa" : "wep",
1528 priv->encr_keys[index].len);
1529
1530 clear_key(priv, index);
1531
1532 if (is_wpa) {
1533 remove_key.size = cpu_to_le32(sizeof(remove_key));
1534 remove_key.index = cpu_to_le32(index);
1535 if (bssid) {
1536 /* pairwise key */
1537 if (!is_broadcast_ether_addr(bssid))
1538 remove_key.index |=
1539 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1540 memcpy(remove_key.bssid, bssid,
1541 sizeof(remove_key.bssid));
1542 } else
1543 memset(remove_key.bssid, 0xff,
1544 sizeof(remove_key.bssid));
1545
1546 ret = rndis_set_oid(usbdev,
1547 RNDIS_OID_802_11_REMOVE_KEY,
1548 &remove_key, sizeof(remove_key));
1549 if (ret != 0)
1550 return ret;
1551 } else {
1552 keyindex = cpu_to_le32(index);
1553 ret = rndis_set_oid(usbdev,
1554 RNDIS_OID_802_11_REMOVE_WEP,
1555 &keyindex, sizeof(keyindex));
1556 if (ret != 0) {
1557 netdev_warn(usbdev->net,
1558 "removing encryption key %d failed (%08X)\n",
1559 index, ret);
1560 return ret;
1561 }
1562 }
1563
1564 /* if it is transmit key, disable encryption */
1565 if (index == priv->encr_tx_key_index)
1566 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1567
1568 return 0;
1569 }
1570
set_multicast_list(struct usbnet * usbdev)1571 static void set_multicast_list(struct usbnet *usbdev)
1572 {
1573 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1574 struct netdev_hw_addr *ha;
1575 __le32 filter, basefilter;
1576 int ret;
1577 char *mc_addrs = NULL;
1578 int mc_count;
1579
1580 basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1581 RNDIS_PACKET_TYPE_BROADCAST);
1582
1583 if (usbdev->net->flags & IFF_PROMISC) {
1584 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1585 RNDIS_PACKET_TYPE_ALL_LOCAL);
1586 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1587 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1588 }
1589
1590 if (filter != basefilter)
1591 goto set_filter;
1592
1593 /*
1594 * mc_list should be accessed holding the lock, so copy addresses to
1595 * local buffer first.
1596 */
1597 netif_addr_lock_bh(usbdev->net);
1598 mc_count = netdev_mc_count(usbdev->net);
1599 if (mc_count > priv->multicast_size) {
1600 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1601 } else if (mc_count) {
1602 int i = 0;
1603
1604 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1605 if (!mc_addrs) {
1606 netif_addr_unlock_bh(usbdev->net);
1607 return;
1608 }
1609
1610 netdev_for_each_mc_addr(ha, usbdev->net)
1611 memcpy(mc_addrs + i++ * ETH_ALEN,
1612 ha->addr, ETH_ALEN);
1613 }
1614 netif_addr_unlock_bh(usbdev->net);
1615
1616 if (filter != basefilter)
1617 goto set_filter;
1618
1619 if (mc_count) {
1620 ret = rndis_set_oid(usbdev,
1621 RNDIS_OID_802_3_MULTICAST_LIST,
1622 mc_addrs, mc_count * ETH_ALEN);
1623 kfree(mc_addrs);
1624 if (ret == 0)
1625 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1626 else
1627 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1628
1629 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1630 mc_count, priv->multicast_size, ret);
1631 }
1632
1633 set_filter:
1634 ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1635 sizeof(filter));
1636 if (ret < 0) {
1637 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1638 le32_to_cpu(filter));
1639 }
1640
1641 netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1642 le32_to_cpu(filter), ret);
1643 }
1644
1645 #ifdef DEBUG
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1646 static void debug_print_pmkids(struct usbnet *usbdev,
1647 struct ndis_80211_pmkid *pmkids,
1648 const char *func_str)
1649 {
1650 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1651 int i, len, count, max_pmkids, entry_len;
1652
1653 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1654 len = le32_to_cpu(pmkids->length);
1655 count = le32_to_cpu(pmkids->bssid_info_count);
1656
1657 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1658
1659 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1660 "%d)\n", func_str, count, len, entry_len);
1661
1662 if (count > max_pmkids)
1663 count = max_pmkids;
1664
1665 for (i = 0; i < count; i++) {
1666 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1667
1668 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1669 "pmkid: %08X:%08X:%08X:%08X\n",
1670 func_str, pmkids->bssid_info[i].bssid,
1671 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1672 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1673 }
1674 }
1675 #else
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1676 static void debug_print_pmkids(struct usbnet *usbdev,
1677 struct ndis_80211_pmkid *pmkids,
1678 const char *func_str)
1679 {
1680 return;
1681 }
1682 #endif
1683
get_device_pmkids(struct usbnet * usbdev)1684 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1685 {
1686 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1687 struct ndis_80211_pmkid *pmkids;
1688 int len, ret, max_pmkids;
1689
1690 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1691 len = struct_size(pmkids, bssid_info, max_pmkids);
1692
1693 pmkids = kzalloc(len, GFP_KERNEL);
1694 if (!pmkids)
1695 return ERR_PTR(-ENOMEM);
1696
1697 pmkids->length = cpu_to_le32(len);
1698 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1699
1700 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1701 pmkids, &len);
1702 if (ret < 0) {
1703 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1704 " -> %d\n", __func__, len, max_pmkids, ret);
1705
1706 kfree(pmkids);
1707 return ERR_PTR(ret);
1708 }
1709
1710 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1711 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1712
1713 debug_print_pmkids(usbdev, pmkids, __func__);
1714
1715 return pmkids;
1716 }
1717
set_device_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids)1718 static int set_device_pmkids(struct usbnet *usbdev,
1719 struct ndis_80211_pmkid *pmkids)
1720 {
1721 int ret, len, num_pmkids;
1722
1723 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1724 len = struct_size(pmkids, bssid_info, num_pmkids);
1725 pmkids->length = cpu_to_le32(len);
1726
1727 debug_print_pmkids(usbdev, pmkids, __func__);
1728
1729 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1730 le32_to_cpu(pmkids->length));
1731 if (ret < 0) {
1732 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1733 "\n", __func__, len, num_pmkids, ret);
1734 }
1735
1736 kfree(pmkids);
1737 return ret;
1738 }
1739
remove_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1740 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1741 struct ndis_80211_pmkid *pmkids,
1742 struct cfg80211_pmksa *pmksa,
1743 int max_pmkids)
1744 {
1745 int i, err;
1746 unsigned int count;
1747
1748 count = le32_to_cpu(pmkids->bssid_info_count);
1749
1750 if (count > max_pmkids)
1751 count = max_pmkids;
1752
1753 for (i = 0; i < count; i++)
1754 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1755 pmksa->bssid))
1756 break;
1757
1758 /* pmkid not found */
1759 if (i == count) {
1760 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1761 __func__, pmksa->bssid);
1762 err = -ENOENT;
1763 goto error;
1764 }
1765
1766 for (; i + 1 < count; i++)
1767 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1768
1769 count--;
1770 pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1771 pmkids->bssid_info_count = cpu_to_le32(count);
1772
1773 return pmkids;
1774 error:
1775 kfree(pmkids);
1776 return ERR_PTR(err);
1777 }
1778
update_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1779 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1780 struct ndis_80211_pmkid *pmkids,
1781 struct cfg80211_pmksa *pmksa,
1782 int max_pmkids)
1783 {
1784 struct ndis_80211_pmkid *new_pmkids;
1785 int i, err, newlen;
1786 unsigned int count;
1787
1788 count = le32_to_cpu(pmkids->bssid_info_count);
1789
1790 if (count > max_pmkids)
1791 count = max_pmkids;
1792
1793 /* update with new pmkid */
1794 for (i = 0; i < count; i++) {
1795 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1796 pmksa->bssid))
1797 continue;
1798
1799 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1800 WLAN_PMKID_LEN);
1801
1802 return pmkids;
1803 }
1804
1805 /* out of space, return error */
1806 if (i == max_pmkids) {
1807 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1808 err = -ENOSPC;
1809 goto error;
1810 }
1811
1812 /* add new pmkid */
1813 newlen = struct_size(pmkids, bssid_info, count + 1);
1814
1815 new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1816 if (!new_pmkids) {
1817 err = -ENOMEM;
1818 goto error;
1819 }
1820 pmkids = new_pmkids;
1821
1822 pmkids->length = cpu_to_le32(newlen);
1823 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1824
1825 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1826 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1827
1828 return pmkids;
1829 error:
1830 kfree(pmkids);
1831 return ERR_PTR(err);
1832 }
1833
1834 /*
1835 * cfg80211 ops
1836 */
rndis_change_virtual_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,struct vif_params * params)1837 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1838 struct net_device *dev,
1839 enum nl80211_iftype type,
1840 struct vif_params *params)
1841 {
1842 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1843 struct usbnet *usbdev = priv->usbdev;
1844 int mode;
1845
1846 switch (type) {
1847 case NL80211_IFTYPE_ADHOC:
1848 mode = NDIS_80211_INFRA_ADHOC;
1849 break;
1850 case NL80211_IFTYPE_STATION:
1851 mode = NDIS_80211_INFRA_INFRA;
1852 break;
1853 default:
1854 return -EINVAL;
1855 }
1856
1857 priv->wdev.iftype = type;
1858
1859 return set_infra_mode(usbdev, mode);
1860 }
1861
rndis_set_wiphy_params(struct wiphy * wiphy,u32 changed)1862 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1863 {
1864 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1865 struct usbnet *usbdev = priv->usbdev;
1866 int err;
1867
1868 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1869 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1870 if (err < 0)
1871 return err;
1872 }
1873
1874 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1875 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1876 if (err < 0)
1877 return err;
1878 }
1879
1880 return 0;
1881 }
1882
rndis_set_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,enum nl80211_tx_power_setting type,int mbm)1883 static int rndis_set_tx_power(struct wiphy *wiphy,
1884 struct wireless_dev *wdev,
1885 enum nl80211_tx_power_setting type,
1886 int mbm)
1887 {
1888 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1889 struct usbnet *usbdev = priv->usbdev;
1890
1891 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1892 __func__, type, mbm);
1893
1894 if (mbm < 0 || (mbm % 100))
1895 return -ENOTSUPP;
1896
1897 /* Device doesn't support changing txpower after initialization, only
1898 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1899 * currently used.
1900 */
1901 if (type == NL80211_TX_POWER_AUTOMATIC ||
1902 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1903 if (!priv->radio_on)
1904 disassociate(usbdev, true); /* turn on radio */
1905
1906 return 0;
1907 }
1908
1909 return -ENOTSUPP;
1910 }
1911
rndis_get_tx_power(struct wiphy * wiphy,struct wireless_dev * wdev,int * dbm)1912 static int rndis_get_tx_power(struct wiphy *wiphy,
1913 struct wireless_dev *wdev,
1914 int *dbm)
1915 {
1916 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1917 struct usbnet *usbdev = priv->usbdev;
1918
1919 *dbm = get_bcm4320_power_dbm(priv);
1920
1921 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1922
1923 return 0;
1924 }
1925
1926 #define SCAN_DELAY_JIFFIES (6 * HZ)
rndis_scan(struct wiphy * wiphy,struct cfg80211_scan_request * request)1927 static int rndis_scan(struct wiphy *wiphy,
1928 struct cfg80211_scan_request *request)
1929 {
1930 struct net_device *dev = request->wdev->netdev;
1931 struct usbnet *usbdev = netdev_priv(dev);
1932 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1933 int ret;
1934 int delay = SCAN_DELAY_JIFFIES;
1935
1936 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1937
1938 /* Get current bssid list from device before new scan, as new scan
1939 * clears internal bssid list.
1940 */
1941 rndis_check_bssid_list(usbdev, NULL, NULL);
1942
1943 if (priv->scan_request && priv->scan_request != request)
1944 return -EBUSY;
1945
1946 priv->scan_request = request;
1947
1948 ret = rndis_start_bssid_list_scan(usbdev);
1949 if (ret == 0) {
1950 if (priv->device_type == RNDIS_BCM4320A)
1951 delay = HZ;
1952
1953 /* Wait before retrieving scan results from device */
1954 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1955 }
1956
1957 return ret;
1958 }
1959
rndis_bss_info_update(struct usbnet * usbdev,struct ndis_80211_bssid_ex * bssid)1960 static bool rndis_bss_info_update(struct usbnet *usbdev,
1961 struct ndis_80211_bssid_ex *bssid)
1962 {
1963 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1964 struct ieee80211_channel *channel;
1965 struct cfg80211_bss *bss;
1966 s32 signal;
1967 u64 timestamp;
1968 u16 capability;
1969 u16 beacon_interval;
1970 struct ndis_80211_fixed_ies *fixed;
1971 int ie_len, bssid_len;
1972 u8 *ie;
1973
1974 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1975 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1976
1977 /* parse bssid structure */
1978 bssid_len = le32_to_cpu(bssid->length);
1979
1980 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1981 sizeof(struct ndis_80211_fixed_ies))
1982 return NULL;
1983
1984 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1985
1986 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1987 ie_len = min(bssid_len - (int)sizeof(*bssid),
1988 (int)le32_to_cpu(bssid->ie_length));
1989 ie_len -= sizeof(struct ndis_80211_fixed_ies);
1990 if (ie_len < 0)
1991 return NULL;
1992
1993 /* extract data for cfg80211_inform_bss */
1994 channel = ieee80211_get_channel(priv->wdev.wiphy,
1995 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1996 if (!channel)
1997 return NULL;
1998
1999 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2000 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2001 capability = le16_to_cpu(fixed->capabilities);
2002 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2003
2004 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2005 CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2006 timestamp, capability, beacon_interval,
2007 ie, ie_len, signal, GFP_KERNEL);
2008 cfg80211_put_bss(priv->wdev.wiphy, bss);
2009
2010 return (bss != NULL);
2011 }
2012
next_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int * bssid_len,void * buf,int len)2013 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2014 struct ndis_80211_bssid_ex *bssid,
2015 int *bssid_len, void *buf, int len)
2016 {
2017 void *buf_end, *bssid_end;
2018
2019 buf_end = (char *)buf + len;
2020 bssid_end = (char *)bssid + *bssid_len;
2021
2022 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2023 *bssid_len = 0;
2024 return NULL;
2025 } else {
2026 bssid = (void *)((char *)bssid + *bssid_len);
2027 *bssid_len = le32_to_cpu(bssid->length);
2028 return bssid;
2029 }
2030 }
2031
check_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int bssid_len,void * buf,int len)2032 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2033 int bssid_len, void *buf, int len)
2034 {
2035 void *buf_end, *bssid_end;
2036
2037 if (!bssid || bssid_len <= 0 || bssid_len > len)
2038 return false;
2039
2040 buf_end = (char *)buf + len;
2041 bssid_end = (char *)bssid + bssid_len;
2042
2043 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2044 }
2045
rndis_check_bssid_list(struct usbnet * usbdev,u8 * match_bssid,bool * matched)2046 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2047 bool *matched)
2048 {
2049 void *buf = NULL;
2050 struct ndis_80211_bssid_list_ex *bssid_list;
2051 struct ndis_80211_bssid_ex *bssid;
2052 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2053
2054 netdev_dbg(usbdev->net, "%s()\n", __func__);
2055
2056 len = CONTROL_BUFFER_SIZE;
2057 resize_buf:
2058 buf = kzalloc(len, GFP_KERNEL);
2059 if (!buf) {
2060 ret = -ENOMEM;
2061 goto out;
2062 }
2063
2064 /* BSSID-list might have got bigger last time we checked, keep
2065 * resizing until it won't get any bigger.
2066 */
2067 new_len = len;
2068 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2069 buf, &new_len);
2070 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2071 goto out;
2072
2073 if (new_len > len) {
2074 len = new_len;
2075 kfree(buf);
2076 goto resize_buf;
2077 }
2078
2079 len = new_len;
2080
2081 bssid_list = buf;
2082 count = le32_to_cpu(bssid_list->num_items);
2083 real_count = 0;
2084 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2085
2086 bssid_len = 0;
2087 bssid = next_bssid_list_item((void *)bssid_list->bssid_data,
2088 &bssid_len, buf, len);
2089
2090 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2091 * received 'num_items' and walking through full bssid buffer instead.
2092 */
2093 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2094 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2095 matched) {
2096 if (ether_addr_equal(bssid->mac, match_bssid))
2097 *matched = true;
2098 }
2099
2100 real_count++;
2101 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2102 }
2103
2104 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2105 " %d\n", __func__, count, real_count);
2106
2107 out:
2108 kfree(buf);
2109 return ret;
2110 }
2111
rndis_get_scan_results(struct work_struct * work)2112 static void rndis_get_scan_results(struct work_struct *work)
2113 {
2114 struct rndis_wlan_private *priv =
2115 container_of(work, struct rndis_wlan_private, scan_work.work);
2116 struct usbnet *usbdev = priv->usbdev;
2117 struct cfg80211_scan_info info = {};
2118 int ret;
2119
2120 netdev_dbg(usbdev->net, "get_scan_results\n");
2121
2122 if (!priv->scan_request)
2123 return;
2124
2125 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2126
2127 info.aborted = ret < 0;
2128 cfg80211_scan_done(priv->scan_request, &info);
2129
2130 priv->scan_request = NULL;
2131 }
2132
rndis_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)2133 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2134 struct cfg80211_connect_params *sme)
2135 {
2136 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2137 struct usbnet *usbdev = priv->usbdev;
2138 struct ieee80211_channel *channel = sme->channel;
2139 struct ndis_80211_ssid ssid;
2140 int pairwise = RNDIS_WLAN_ALG_NONE;
2141 int groupwise = RNDIS_WLAN_ALG_NONE;
2142 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2143 int length, i, ret, chan = -1;
2144
2145 if (channel)
2146 chan = ieee80211_frequency_to_channel(channel->center_freq);
2147
2148 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2149 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2150 pairwise |=
2151 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2152
2153 if (sme->crypto.n_ciphers_pairwise > 0 &&
2154 pairwise == RNDIS_WLAN_ALG_NONE) {
2155 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2156 return -ENOTSUPP;
2157 }
2158
2159 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2160 keymgmt |=
2161 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2162
2163 if (sme->crypto.n_akm_suites > 0 &&
2164 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2165 netdev_err(usbdev->net, "Invalid keymgmt\n");
2166 return -ENOTSUPP;
2167 }
2168
2169 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2170 sme->ssid, sme->bssid, chan,
2171 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2172 groupwise, pairwise, keymgmt);
2173
2174 if (is_associated(usbdev))
2175 disassociate(usbdev, false);
2176
2177 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2178 if (ret < 0) {
2179 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2180 ret);
2181 goto err_turn_radio_on;
2182 }
2183
2184 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2185 keymgmt);
2186 if (ret < 0) {
2187 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2188 ret);
2189 goto err_turn_radio_on;
2190 }
2191
2192 set_priv_filter(usbdev);
2193
2194 ret = set_encr_mode(usbdev, pairwise, groupwise);
2195 if (ret < 0) {
2196 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2197 ret);
2198 goto err_turn_radio_on;
2199 }
2200
2201 if (channel) {
2202 ret = set_channel(usbdev, chan);
2203 if (ret < 0) {
2204 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2205 ret);
2206 goto err_turn_radio_on;
2207 }
2208 }
2209
2210 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2211 priv->encr_tx_key_index = sme->key_idx;
2212 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2213 if (ret < 0) {
2214 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2215 ret, sme->key_len, sme->key_idx);
2216 goto err_turn_radio_on;
2217 }
2218 }
2219
2220 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2221 !is_broadcast_ether_addr(sme->bssid)) {
2222 ret = set_bssid(usbdev, sme->bssid);
2223 if (ret < 0) {
2224 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2225 ret);
2226 goto err_turn_radio_on;
2227 }
2228 } else
2229 clear_bssid(usbdev);
2230
2231 length = sme->ssid_len;
2232 if (length > NDIS_802_11_LENGTH_SSID)
2233 length = NDIS_802_11_LENGTH_SSID;
2234
2235 memset(&ssid, 0, sizeof(ssid));
2236 ssid.length = cpu_to_le32(length);
2237 memcpy(ssid.essid, sme->ssid, length);
2238
2239 /* Pause and purge rx queue, so we don't pass packets before
2240 * 'media connect'-indication.
2241 */
2242 usbnet_pause_rx(usbdev);
2243 usbnet_purge_paused_rxq(usbdev);
2244
2245 ret = set_essid(usbdev, &ssid);
2246 if (ret < 0)
2247 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2248 return ret;
2249
2250 err_turn_radio_on:
2251 disassociate(usbdev, true);
2252
2253 return ret;
2254 }
2255
rndis_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)2256 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2257 u16 reason_code)
2258 {
2259 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2260 struct usbnet *usbdev = priv->usbdev;
2261
2262 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2263
2264 priv->connected = false;
2265 eth_zero_addr(priv->bssid);
2266
2267 return deauthenticate(usbdev);
2268 }
2269
rndis_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)2270 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2271 struct cfg80211_ibss_params *params)
2272 {
2273 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2274 struct usbnet *usbdev = priv->usbdev;
2275 struct ieee80211_channel *channel = params->chandef.chan;
2276 struct ndis_80211_ssid ssid;
2277 enum nl80211_auth_type auth_type;
2278 int ret, alg, length, chan = -1;
2279
2280 if (channel)
2281 chan = ieee80211_frequency_to_channel(channel->center_freq);
2282
2283 /* TODO: How to handle ad-hoc encryption?
2284 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2285 * pre-shared for encryption (open/shared/wpa), is key set before
2286 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2287 */
2288 if (params->privacy) {
2289 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2290 alg = RNDIS_WLAN_ALG_WEP;
2291 } else {
2292 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2293 alg = RNDIS_WLAN_ALG_NONE;
2294 }
2295
2296 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2297 params->ssid, params->bssid, chan, params->privacy);
2298
2299 if (is_associated(usbdev))
2300 disassociate(usbdev, false);
2301
2302 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2303 if (ret < 0) {
2304 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2305 ret);
2306 goto err_turn_radio_on;
2307 }
2308
2309 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2310 if (ret < 0) {
2311 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2312 ret);
2313 goto err_turn_radio_on;
2314 }
2315
2316 set_priv_filter(usbdev);
2317
2318 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2319 if (ret < 0) {
2320 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2321 ret);
2322 goto err_turn_radio_on;
2323 }
2324
2325 if (channel) {
2326 ret = set_channel(usbdev, chan);
2327 if (ret < 0) {
2328 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2329 ret);
2330 goto err_turn_radio_on;
2331 }
2332 }
2333
2334 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2335 !is_broadcast_ether_addr(params->bssid)) {
2336 ret = set_bssid(usbdev, params->bssid);
2337 if (ret < 0) {
2338 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2339 ret);
2340 goto err_turn_radio_on;
2341 }
2342 } else
2343 clear_bssid(usbdev);
2344
2345 length = params->ssid_len;
2346 if (length > NDIS_802_11_LENGTH_SSID)
2347 length = NDIS_802_11_LENGTH_SSID;
2348
2349 memset(&ssid, 0, sizeof(ssid));
2350 ssid.length = cpu_to_le32(length);
2351 memcpy(ssid.essid, params->ssid, length);
2352
2353 /* Don't need to pause rx queue for ad-hoc. */
2354 usbnet_purge_paused_rxq(usbdev);
2355 usbnet_resume_rx(usbdev);
2356
2357 ret = set_essid(usbdev, &ssid);
2358 if (ret < 0)
2359 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2360 ret);
2361 return ret;
2362
2363 err_turn_radio_on:
2364 disassociate(usbdev, true);
2365
2366 return ret;
2367 }
2368
rndis_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2369 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2370 {
2371 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2372 struct usbnet *usbdev = priv->usbdev;
2373
2374 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2375
2376 priv->connected = false;
2377 eth_zero_addr(priv->bssid);
2378
2379 return deauthenticate(usbdev);
2380 }
2381
rndis_add_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 key_index,bool pairwise,const u8 * mac_addr,struct key_params * params)2382 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2383 int link_id, u8 key_index, bool pairwise,
2384 const u8 *mac_addr, struct key_params *params)
2385 {
2386 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2387 struct usbnet *usbdev = priv->usbdev;
2388 __le32 flags;
2389
2390 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2391 __func__, key_index, mac_addr, params->cipher);
2392
2393 switch (params->cipher) {
2394 case WLAN_CIPHER_SUITE_WEP40:
2395 case WLAN_CIPHER_SUITE_WEP104:
2396 return add_wep_key(usbdev, params->key, params->key_len,
2397 key_index);
2398 case WLAN_CIPHER_SUITE_TKIP:
2399 case WLAN_CIPHER_SUITE_CCMP:
2400 flags = 0;
2401
2402 if (params->seq && params->seq_len > 0)
2403 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2404 if (mac_addr)
2405 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2406 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2407
2408 return add_wpa_key(usbdev, params->key, params->key_len,
2409 key_index, mac_addr, params->seq,
2410 params->seq_len, params->cipher, flags);
2411 default:
2412 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2413 __func__, params->cipher);
2414 return -ENOTSUPP;
2415 }
2416 }
2417
rndis_del_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 key_index,bool pairwise,const u8 * mac_addr)2418 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2419 int link_id, u8 key_index, bool pairwise,
2420 const u8 *mac_addr)
2421 {
2422 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2423 struct usbnet *usbdev = priv->usbdev;
2424
2425 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2426
2427 return remove_key(usbdev, key_index, mac_addr);
2428 }
2429
rndis_set_default_key(struct wiphy * wiphy,struct net_device * netdev,int link_id,u8 key_index,bool unicast,bool multicast)2430 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2431 int link_id, u8 key_index, bool unicast,
2432 bool multicast)
2433 {
2434 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2435 struct usbnet *usbdev = priv->usbdev;
2436 struct rndis_wlan_encr_key key;
2437
2438 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2439
2440 if (key_index >= RNDIS_WLAN_NUM_KEYS)
2441 return -ENOENT;
2442
2443 priv->encr_tx_key_index = key_index;
2444
2445 if (is_wpa_key(priv, key_index))
2446 return 0;
2447
2448 key = priv->encr_keys[key_index];
2449
2450 return add_wep_key(usbdev, key.material, key.len, key_index);
2451 }
2452
rndis_fill_station_info(struct usbnet * usbdev,struct station_info * sinfo)2453 static void rndis_fill_station_info(struct usbnet *usbdev,
2454 struct station_info *sinfo)
2455 {
2456 __le32 linkspeed, rssi;
2457 int ret, len;
2458
2459 memset(sinfo, 0, sizeof(*sinfo));
2460
2461 len = sizeof(linkspeed);
2462 ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2463 if (ret == 0) {
2464 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2465 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2466 }
2467
2468 len = sizeof(rssi);
2469 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2470 &rssi, &len);
2471 if (ret == 0) {
2472 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2473 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2474 }
2475 }
2476
rndis_get_station(struct wiphy * wiphy,struct net_device * dev,const u8 * mac,struct station_info * sinfo)2477 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2478 const u8 *mac, struct station_info *sinfo)
2479 {
2480 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2481 struct usbnet *usbdev = priv->usbdev;
2482
2483 if (!ether_addr_equal(priv->bssid, mac))
2484 return -ENOENT;
2485
2486 rndis_fill_station_info(usbdev, sinfo);
2487
2488 return 0;
2489 }
2490
rndis_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)2491 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2492 int idx, u8 *mac, struct station_info *sinfo)
2493 {
2494 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2495 struct usbnet *usbdev = priv->usbdev;
2496
2497 if (idx != 0)
2498 return -ENOENT;
2499
2500 memcpy(mac, priv->bssid, ETH_ALEN);
2501
2502 rndis_fill_station_info(usbdev, sinfo);
2503
2504 return 0;
2505 }
2506
rndis_set_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2507 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2508 struct cfg80211_pmksa *pmksa)
2509 {
2510 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2511 struct usbnet *usbdev = priv->usbdev;
2512 struct ndis_80211_pmkid *pmkids;
2513 u32 *tmp = (u32 *)pmksa->pmkid;
2514
2515 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2516 pmksa->bssid,
2517 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2518 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2519
2520 pmkids = get_device_pmkids(usbdev);
2521 if (IS_ERR(pmkids)) {
2522 /* couldn't read PMKID cache from device */
2523 return PTR_ERR(pmkids);
2524 }
2525
2526 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2527 if (IS_ERR(pmkids)) {
2528 /* not found, list full, etc */
2529 return PTR_ERR(pmkids);
2530 }
2531
2532 return set_device_pmkids(usbdev, pmkids);
2533 }
2534
rndis_del_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2535 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2536 struct cfg80211_pmksa *pmksa)
2537 {
2538 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2539 struct usbnet *usbdev = priv->usbdev;
2540 struct ndis_80211_pmkid *pmkids;
2541 u32 *tmp = (u32 *)pmksa->pmkid;
2542
2543 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2544 pmksa->bssid,
2545 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2546 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2547
2548 pmkids = get_device_pmkids(usbdev);
2549 if (IS_ERR(pmkids)) {
2550 /* Couldn't read PMKID cache from device */
2551 return PTR_ERR(pmkids);
2552 }
2553
2554 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2555 if (IS_ERR(pmkids)) {
2556 /* not found, etc */
2557 return PTR_ERR(pmkids);
2558 }
2559
2560 return set_device_pmkids(usbdev, pmkids);
2561 }
2562
rndis_flush_pmksa(struct wiphy * wiphy,struct net_device * netdev)2563 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2564 {
2565 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2566 struct usbnet *usbdev = priv->usbdev;
2567 struct ndis_80211_pmkid pmkid;
2568
2569 netdev_dbg(usbdev->net, "%s()\n", __func__);
2570
2571 memset(&pmkid, 0, sizeof(pmkid));
2572
2573 pmkid.length = cpu_to_le32(sizeof(pmkid));
2574 pmkid.bssid_info_count = cpu_to_le32(0);
2575
2576 return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2577 &pmkid, sizeof(pmkid));
2578 }
2579
rndis_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)2580 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2581 bool enabled, int timeout)
2582 {
2583 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2584 struct usbnet *usbdev = priv->usbdev;
2585 int power_mode;
2586 __le32 mode;
2587 int ret;
2588
2589 if (priv->device_type != RNDIS_BCM4320B)
2590 return -ENOTSUPP;
2591
2592 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2593 enabled ? "enabled" : "disabled",
2594 timeout);
2595
2596 if (enabled)
2597 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2598 else
2599 power_mode = NDIS_80211_POWER_MODE_CAM;
2600
2601 if (power_mode == priv->power_mode)
2602 return 0;
2603
2604 priv->power_mode = power_mode;
2605
2606 mode = cpu_to_le32(power_mode);
2607 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2608 &mode, sizeof(mode));
2609
2610 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2611 __func__, ret);
2612
2613 return ret;
2614 }
2615
rndis_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)2616 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2617 struct net_device *dev,
2618 s32 rssi_thold, u32 rssi_hyst)
2619 {
2620 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2621
2622 priv->cqm_rssi_thold = rssi_thold;
2623 priv->cqm_rssi_hyst = rssi_hyst;
2624 priv->last_cqm_event_rssi = 0;
2625
2626 return 0;
2627 }
2628
rndis_wlan_craft_connected_bss(struct usbnet * usbdev,u8 * bssid,struct ndis_80211_assoc_info * info)2629 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2630 struct ndis_80211_assoc_info *info)
2631 {
2632 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2633 struct ieee80211_channel *channel;
2634 struct ndis_80211_ssid ssid;
2635 struct cfg80211_bss *bss;
2636 s32 signal;
2637 u64 timestamp;
2638 u16 capability;
2639 u32 beacon_period = 0;
2640 __le32 rssi;
2641 u8 ie_buf[34];
2642 int len, ret, ie_len;
2643
2644 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2645 len = sizeof(rssi);
2646 rssi = 0;
2647 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2648 &rssi, &len);
2649 signal = level_to_qual(le32_to_cpu(rssi));
2650
2651 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2652 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2653 level_to_qual(le32_to_cpu(rssi)));
2654
2655 /* Get AP capabilities */
2656 if (info) {
2657 capability = le16_to_cpu(info->resp_ie.capa);
2658 } else {
2659 /* Set atleast ESS/IBSS capability */
2660 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2661 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2662 }
2663
2664 /* Get channel and beacon interval */
2665 channel = get_current_channel(usbdev, &beacon_period);
2666 if (!channel) {
2667 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2668 __func__);
2669 return;
2670 }
2671
2672 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2673 len = sizeof(ssid);
2674 memset(&ssid, 0, sizeof(ssid));
2675 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2676 &ssid, &len);
2677 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2678 "'%.32s'\n", __func__, ret,
2679 le32_to_cpu(ssid.length), ssid.essid);
2680
2681 if (le32_to_cpu(ssid.length) > 32)
2682 ssid.length = cpu_to_le32(32);
2683
2684 ie_buf[0] = WLAN_EID_SSID;
2685 ie_buf[1] = le32_to_cpu(ssid.length);
2686 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2687
2688 ie_len = le32_to_cpu(ssid.length) + 2;
2689
2690 /* no tsf */
2691 timestamp = 0;
2692
2693 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2694 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2695 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2696 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2697 ssid.essid, signal);
2698
2699 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2700 CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2701 timestamp, capability, beacon_period,
2702 ie_buf, ie_len, signal, GFP_KERNEL);
2703 cfg80211_put_bss(priv->wdev.wiphy, bss);
2704 }
2705
2706 /*
2707 * workers, indication handlers, device poller
2708 */
rndis_wlan_do_link_up_work(struct usbnet * usbdev)2709 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2710 {
2711 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2712 struct ndis_80211_assoc_info *info = NULL;
2713 u8 bssid[ETH_ALEN];
2714 unsigned int resp_ie_len, req_ie_len;
2715 unsigned int offset;
2716 u8 *req_ie, *resp_ie;
2717 int ret;
2718 bool roamed = false;
2719 bool match_bss;
2720
2721 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2722 /* received media connect indication while connected, either
2723 * device reassociated with same AP or roamed to new. */
2724 roamed = true;
2725 }
2726
2727 req_ie_len = 0;
2728 resp_ie_len = 0;
2729 req_ie = NULL;
2730 resp_ie = NULL;
2731
2732 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2733 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2734 if (!info) {
2735 /* No memory? Try resume work later */
2736 set_bit(WORK_LINK_UP, &priv->work_pending);
2737 queue_work(priv->workqueue, &priv->work);
2738 return;
2739 }
2740
2741 /* Get association info IEs from device. */
2742 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2743 if (!ret) {
2744 req_ie_len = le32_to_cpu(info->req_ie_length);
2745 if (req_ie_len > CONTROL_BUFFER_SIZE)
2746 req_ie_len = CONTROL_BUFFER_SIZE;
2747 if (req_ie_len != 0) {
2748 offset = le32_to_cpu(info->offset_req_ies);
2749
2750 if (offset > CONTROL_BUFFER_SIZE)
2751 offset = CONTROL_BUFFER_SIZE;
2752
2753 req_ie = (u8 *)info + offset;
2754
2755 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2756 req_ie_len =
2757 CONTROL_BUFFER_SIZE - offset;
2758 }
2759
2760 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2761 if (resp_ie_len > CONTROL_BUFFER_SIZE)
2762 resp_ie_len = CONTROL_BUFFER_SIZE;
2763 if (resp_ie_len != 0) {
2764 offset = le32_to_cpu(info->offset_resp_ies);
2765
2766 if (offset > CONTROL_BUFFER_SIZE)
2767 offset = CONTROL_BUFFER_SIZE;
2768
2769 resp_ie = (u8 *)info + offset;
2770
2771 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2772 resp_ie_len =
2773 CONTROL_BUFFER_SIZE - offset;
2774 }
2775 } else {
2776 /* Since rndis_wlan_craft_connected_bss() might use info
2777 * later and expects info to contain valid data if
2778 * non-null, free info and set NULL here.
2779 */
2780 kfree(info);
2781 info = NULL;
2782 }
2783 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2784 return;
2785
2786 ret = get_bssid(usbdev, bssid);
2787 if (ret < 0)
2788 memset(bssid, 0, sizeof(bssid));
2789
2790 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2791 bssid, roamed ? " roamed" : "");
2792
2793 /* Internal bss list in device should contain at least the currently
2794 * connected bss and we can get it to cfg80211 with
2795 * rndis_check_bssid_list().
2796 *
2797 * NDIS spec says: "If the device is associated, but the associated
2798 * BSSID is not in its BSSID scan list, then the driver must add an
2799 * entry for the BSSID at the end of the data that it returns in
2800 * response to query of RNDIS_OID_802_11_BSSID_LIST."
2801 *
2802 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2803 */
2804 match_bss = false;
2805 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2806
2807 if (!is_zero_ether_addr(bssid) && !match_bss) {
2808 /* Couldn't get bss from device, we need to manually craft bss
2809 * for cfg80211.
2810 */
2811 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2812 }
2813
2814 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2815 if (!roamed) {
2816 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2817 req_ie_len, resp_ie,
2818 resp_ie_len, 0, GFP_KERNEL);
2819 } else {
2820 struct cfg80211_roam_info roam_info = {
2821 .links[0].channel =
2822 get_current_channel(usbdev, NULL),
2823 .links[0].bssid = bssid,
2824 .req_ie = req_ie,
2825 .req_ie_len = req_ie_len,
2826 .resp_ie = resp_ie,
2827 .resp_ie_len = resp_ie_len,
2828 };
2829
2830 cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2831 }
2832 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2833 cfg80211_ibss_joined(usbdev->net, bssid,
2834 get_current_channel(usbdev, NULL),
2835 GFP_KERNEL);
2836
2837 kfree(info);
2838
2839 priv->connected = true;
2840 memcpy(priv->bssid, bssid, ETH_ALEN);
2841
2842 usbnet_resume_rx(usbdev);
2843 netif_carrier_on(usbdev->net);
2844 }
2845
rndis_wlan_do_link_down_work(struct usbnet * usbdev)2846 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2847 {
2848 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2849
2850 if (priv->connected) {
2851 priv->connected = false;
2852 eth_zero_addr(priv->bssid);
2853
2854 deauthenticate(usbdev);
2855
2856 cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2857 }
2858
2859 netif_carrier_off(usbdev->net);
2860 }
2861
rndis_wlan_worker(struct work_struct * work)2862 static void rndis_wlan_worker(struct work_struct *work)
2863 {
2864 struct rndis_wlan_private *priv =
2865 container_of(work, struct rndis_wlan_private, work);
2866 struct usbnet *usbdev = priv->usbdev;
2867
2868 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2869 rndis_wlan_do_link_up_work(usbdev);
2870
2871 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2872 rndis_wlan_do_link_down_work(usbdev);
2873
2874 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2875 set_multicast_list(usbdev);
2876 }
2877
rndis_wlan_set_multicast_list(struct net_device * dev)2878 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2879 {
2880 struct usbnet *usbdev = netdev_priv(dev);
2881 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2882
2883 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2884 return;
2885
2886 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2887 queue_work(priv->workqueue, &priv->work);
2888 }
2889
rndis_wlan_auth_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2890 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2891 struct ndis_80211_status_indication *indication,
2892 int len)
2893 {
2894 u8 *buf;
2895 const char *type;
2896 int flags, buflen, key_id;
2897 bool pairwise_error, group_error;
2898 struct ndis_80211_auth_request *auth_req;
2899 enum nl80211_key_type key_type;
2900
2901 /* must have at least one array entry */
2902 if (len < offsetof(struct ndis_80211_status_indication, u) +
2903 sizeof(struct ndis_80211_auth_request)) {
2904 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2905 len);
2906 return;
2907 }
2908
2909 buf = (void *)&indication->u.auth_request[0];
2910 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2911
2912 while (buflen >= sizeof(*auth_req)) {
2913 auth_req = (void *)buf;
2914 if (buflen < le32_to_cpu(auth_req->length))
2915 return;
2916 type = "unknown";
2917 flags = le32_to_cpu(auth_req->flags);
2918 pairwise_error = false;
2919 group_error = false;
2920
2921 if (flags & 0x1)
2922 type = "reauth request";
2923 if (flags & 0x2)
2924 type = "key update request";
2925 if (flags & 0x6) {
2926 pairwise_error = true;
2927 type = "pairwise_error";
2928 }
2929 if (flags & 0xe) {
2930 group_error = true;
2931 type = "group_error";
2932 }
2933
2934 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2935 type, le32_to_cpu(auth_req->flags));
2936
2937 if (pairwise_error) {
2938 key_type = NL80211_KEYTYPE_PAIRWISE;
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 if (group_error) {
2948 key_type = NL80211_KEYTYPE_GROUP;
2949 key_id = -1;
2950
2951 cfg80211_michael_mic_failure(usbdev->net,
2952 auth_req->bssid,
2953 key_type, key_id, NULL,
2954 GFP_KERNEL);
2955 }
2956
2957 buflen -= le32_to_cpu(auth_req->length);
2958 buf += le32_to_cpu(auth_req->length);
2959 }
2960 }
2961
rndis_wlan_pmkid_cand_list_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2962 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2963 struct ndis_80211_status_indication *indication,
2964 int len)
2965 {
2966 struct ndis_80211_pmkid_cand_list *cand_list;
2967 int list_len, expected_len, i;
2968
2969 if (len < offsetof(struct ndis_80211_status_indication, u) +
2970 sizeof(struct ndis_80211_pmkid_cand_list)) {
2971 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2972 len);
2973 return;
2974 }
2975
2976 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2977 sizeof(struct ndis_80211_pmkid_candidate);
2978 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2979 offsetof(struct ndis_80211_status_indication, u);
2980
2981 if (len < expected_len) {
2982 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2983 len, expected_len);
2984 return;
2985 }
2986
2987 cand_list = &indication->u.cand_list;
2988
2989 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2990 le32_to_cpu(cand_list->version),
2991 le32_to_cpu(cand_list->num_candidates));
2992
2993 if (le32_to_cpu(cand_list->version) != 1)
2994 return;
2995
2996 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2997 struct ndis_80211_pmkid_candidate *cand =
2998 &cand_list->candidate_list[i];
2999 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3000
3001 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3002 i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3003
3004 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3005 preauth, GFP_ATOMIC);
3006 }
3007 }
3008
rndis_wlan_media_specific_indication(struct usbnet * usbdev,struct rndis_indicate * msg,int buflen)3009 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3010 struct rndis_indicate *msg, int buflen)
3011 {
3012 struct ndis_80211_status_indication *indication;
3013 unsigned int len, offset;
3014
3015 offset = offsetof(struct rndis_indicate, status) +
3016 le32_to_cpu(msg->offset);
3017 len = le32_to_cpu(msg->length);
3018
3019 if (len < 8) {
3020 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3021 len);
3022 return;
3023 }
3024
3025 if (len > buflen || offset > buflen || offset + len > buflen) {
3026 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3027 offset + len, buflen);
3028 return;
3029 }
3030
3031 indication = (void *)((u8 *)msg + offset);
3032
3033 switch (le32_to_cpu(indication->status_type)) {
3034 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3035 netdev_info(usbdev->net, "radio state indication: %i\n",
3036 le32_to_cpu(indication->u.radio_status));
3037 return;
3038
3039 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3040 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3041 le32_to_cpu(indication->u.media_stream_mode));
3042 return;
3043
3044 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3045 rndis_wlan_auth_indication(usbdev, indication, len);
3046 return;
3047
3048 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3049 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3050 return;
3051
3052 default:
3053 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3054 le32_to_cpu(indication->status_type));
3055 }
3056 }
3057
rndis_wlan_indication(struct usbnet * usbdev,void * ind,int buflen)3058 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3059 {
3060 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3061 struct rndis_indicate *msg = ind;
3062
3063 switch (le32_to_cpu(msg->status)) {
3064 case RNDIS_STATUS_MEDIA_CONNECT:
3065 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3066 /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3067 * "media connect" indications which confuses driver
3068 * and userspace to think that device is
3069 * roaming/reassociating when it isn't.
3070 */
3071 netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3072 return;
3073 }
3074
3075 usbnet_pause_rx(usbdev);
3076
3077 netdev_info(usbdev->net, "media connect\n");
3078
3079 /* queue work to avoid recursive calls into rndis_command */
3080 set_bit(WORK_LINK_UP, &priv->work_pending);
3081 queue_work(priv->workqueue, &priv->work);
3082 break;
3083
3084 case RNDIS_STATUS_MEDIA_DISCONNECT:
3085 netdev_info(usbdev->net, "media disconnect\n");
3086
3087 /* queue work to avoid recursive calls into rndis_command */
3088 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3089 queue_work(priv->workqueue, &priv->work);
3090 break;
3091
3092 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3093 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3094 break;
3095
3096 default:
3097 netdev_info(usbdev->net, "indication: 0x%08x\n",
3098 le32_to_cpu(msg->status));
3099 break;
3100 }
3101 }
3102
rndis_wlan_get_caps(struct usbnet * usbdev,struct wiphy * wiphy)3103 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3104 {
3105 struct {
3106 __le32 num_items;
3107 __le32 items[8];
3108 } networks_supported;
3109 struct ndis_80211_capability caps;
3110 int len, retval, i, n;
3111 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3112
3113 /* determine supported modes */
3114 len = sizeof(networks_supported);
3115 retval = rndis_query_oid(usbdev,
3116 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3117 &networks_supported, &len);
3118 if (!retval) {
3119 n = le32_to_cpu(networks_supported.num_items);
3120 if (n > 8)
3121 n = 8;
3122 for (i = 0; i < n; i++) {
3123 switch (le32_to_cpu(networks_supported.items[i])) {
3124 case NDIS_80211_TYPE_FREQ_HOP:
3125 case NDIS_80211_TYPE_DIRECT_SEQ:
3126 priv->caps |= CAP_MODE_80211B;
3127 break;
3128 case NDIS_80211_TYPE_OFDM_A:
3129 priv->caps |= CAP_MODE_80211A;
3130 break;
3131 case NDIS_80211_TYPE_OFDM_G:
3132 priv->caps |= CAP_MODE_80211G;
3133 break;
3134 }
3135 }
3136 }
3137
3138 /* get device 802.11 capabilities, number of PMKIDs */
3139 len = sizeof(caps);
3140 retval = rndis_query_oid(usbdev,
3141 RNDIS_OID_802_11_CAPABILITY,
3142 &caps, &len);
3143 if (!retval) {
3144 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3145 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3146 le32_to_cpu(caps.length),
3147 le32_to_cpu(caps.version),
3148 le32_to_cpu(caps.num_pmkids),
3149 le32_to_cpu(caps.num_auth_encr_pair));
3150 wiphy->max_num_pmkids = le32_to_cpu(caps.num_pmkids);
3151 } else
3152 wiphy->max_num_pmkids = 0;
3153
3154 return retval;
3155 }
3156
rndis_do_cqm(struct usbnet * usbdev,s32 rssi)3157 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3158 {
3159 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3160 enum nl80211_cqm_rssi_threshold_event event;
3161 int thold, hyst, last_event;
3162
3163 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3164 return;
3165 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3166 return;
3167
3168 last_event = priv->last_cqm_event_rssi;
3169 thold = priv->cqm_rssi_thold;
3170 hyst = priv->cqm_rssi_hyst;
3171
3172 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3173 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3174 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3175 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3176 else
3177 return;
3178
3179 priv->last_cqm_event_rssi = rssi;
3180 cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3181 }
3182
3183 #define DEVICE_POLLER_JIFFIES (HZ)
rndis_device_poller(struct work_struct * work)3184 static void rndis_device_poller(struct work_struct *work)
3185 {
3186 struct rndis_wlan_private *priv =
3187 container_of(work, struct rndis_wlan_private,
3188 dev_poller_work.work);
3189 struct usbnet *usbdev = priv->usbdev;
3190 __le32 rssi, tmp;
3191 int len, ret, j;
3192 int update_jiffies = DEVICE_POLLER_JIFFIES;
3193 void *buf;
3194
3195 /* Only check/do workaround when connected. Calling is_associated()
3196 * also polls device with rndis_command() and catches for media link
3197 * indications.
3198 */
3199 if (!is_associated(usbdev)) {
3200 /* Workaround bad scanning in BCM4320a devices with active
3201 * background scanning when not associated.
3202 */
3203 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3204 !priv->scan_request) {
3205 /* Get previous scan results */
3206 rndis_check_bssid_list(usbdev, NULL, NULL);
3207
3208 /* Initiate new scan */
3209 rndis_start_bssid_list_scan(usbdev);
3210 }
3211
3212 goto end;
3213 }
3214
3215 len = sizeof(rssi);
3216 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3217 &rssi, &len);
3218 if (ret == 0) {
3219 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3220 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3221 }
3222
3223 netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3224 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3225
3226 /* Workaround transfer stalls on poor quality links.
3227 * TODO: find right way to fix these stalls (as stalls do not happen
3228 * with ndiswrapper/windows driver). */
3229 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3230 /* Decrease stats worker interval to catch stalls.
3231 * faster. Faster than 400-500ms causes packet loss,
3232 * Slower doesn't catch stalls fast enough.
3233 */
3234 j = msecs_to_jiffies(priv->param_workaround_interval);
3235 if (j > DEVICE_POLLER_JIFFIES)
3236 j = DEVICE_POLLER_JIFFIES;
3237 else if (j <= 0)
3238 j = 1;
3239 update_jiffies = j;
3240
3241 /* Send scan OID. Use of both OIDs is required to get device
3242 * working.
3243 */
3244 tmp = cpu_to_le32(1);
3245 rndis_set_oid(usbdev,
3246 RNDIS_OID_802_11_BSSID_LIST_SCAN,
3247 &tmp, sizeof(tmp));
3248
3249 len = CONTROL_BUFFER_SIZE;
3250 buf = kmalloc(len, GFP_KERNEL);
3251 if (!buf)
3252 goto end;
3253
3254 rndis_query_oid(usbdev,
3255 RNDIS_OID_802_11_BSSID_LIST,
3256 buf, &len);
3257 kfree(buf);
3258 }
3259
3260 end:
3261 if (update_jiffies >= HZ)
3262 update_jiffies = round_jiffies_relative(update_jiffies);
3263 else {
3264 j = round_jiffies_relative(update_jiffies);
3265 if (abs(j - update_jiffies) <= 10)
3266 update_jiffies = j;
3267 }
3268
3269 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3270 update_jiffies);
3271 }
3272
3273 /*
3274 * driver/device initialization
3275 */
rndis_copy_module_params(struct usbnet * usbdev,int device_type)3276 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3277 {
3278 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3279
3280 priv->device_type = device_type;
3281
3282 priv->param_country[0] = modparam_country[0];
3283 priv->param_country[1] = modparam_country[1];
3284 priv->param_country[2] = 0;
3285 priv->param_frameburst = modparam_frameburst;
3286 priv->param_afterburner = modparam_afterburner;
3287 priv->param_power_save = modparam_power_save;
3288 priv->param_power_output = modparam_power_output;
3289 priv->param_roamtrigger = modparam_roamtrigger;
3290 priv->param_roamdelta = modparam_roamdelta;
3291
3292 priv->param_country[0] = toupper(priv->param_country[0]);
3293 priv->param_country[1] = toupper(priv->param_country[1]);
3294 /* doesn't support EU as country code, use FI instead */
3295 if (!strcmp(priv->param_country, "EU"))
3296 strcpy(priv->param_country, "FI");
3297
3298 if (priv->param_power_save < 0)
3299 priv->param_power_save = 0;
3300 else if (priv->param_power_save > 2)
3301 priv->param_power_save = 2;
3302
3303 if (priv->param_power_output < 0)
3304 priv->param_power_output = 0;
3305 else if (priv->param_power_output > 3)
3306 priv->param_power_output = 3;
3307
3308 if (priv->param_roamtrigger < -80)
3309 priv->param_roamtrigger = -80;
3310 else if (priv->param_roamtrigger > -60)
3311 priv->param_roamtrigger = -60;
3312
3313 if (priv->param_roamdelta < 0)
3314 priv->param_roamdelta = 0;
3315 else if (priv->param_roamdelta > 2)
3316 priv->param_roamdelta = 2;
3317
3318 if (modparam_workaround_interval < 0)
3319 priv->param_workaround_interval = 500;
3320 else
3321 priv->param_workaround_interval = modparam_workaround_interval;
3322 }
3323
unknown_early_init(struct usbnet * usbdev)3324 static int unknown_early_init(struct usbnet *usbdev)
3325 {
3326 /* copy module parameters for unknown so that iwconfig reports txpower
3327 * and workaround parameter is copied to private structure correctly.
3328 */
3329 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3330
3331 /* This is unknown device, so do not try set configuration parameters.
3332 */
3333
3334 return 0;
3335 }
3336
bcm4320a_early_init(struct usbnet * usbdev)3337 static int bcm4320a_early_init(struct usbnet *usbdev)
3338 {
3339 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3340 * and workaround parameter is copied to private structure correctly.
3341 */
3342 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3343
3344 /* bcm4320a doesn't handle configuration parameters well. Try
3345 * set any and you get partially zeroed mac and broken device.
3346 */
3347
3348 return 0;
3349 }
3350
bcm4320b_early_init(struct usbnet * usbdev)3351 static int bcm4320b_early_init(struct usbnet *usbdev)
3352 {
3353 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3354 char buf[8];
3355
3356 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3357
3358 /* Early initialization settings, setting these won't have effect
3359 * if called after generic_rndis_bind().
3360 */
3361
3362 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3363 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3364 priv->param_frameburst ? "1" : "0");
3365 rndis_set_config_parameter_str(usbdev, "Afterburner",
3366 priv->param_afterburner ? "1" : "0");
3367 sprintf(buf, "%d", priv->param_power_save);
3368 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3369 sprintf(buf, "%d", priv->param_power_output);
3370 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3371 sprintf(buf, "%d", priv->param_roamtrigger);
3372 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3373 sprintf(buf, "%d", priv->param_roamdelta);
3374 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3375
3376 return 0;
3377 }
3378
3379 /* same as rndis_netdev_ops but with local multicast handler */
3380 static const struct net_device_ops rndis_wlan_netdev_ops = {
3381 .ndo_open = usbnet_open,
3382 .ndo_stop = usbnet_stop,
3383 .ndo_start_xmit = usbnet_start_xmit,
3384 .ndo_tx_timeout = usbnet_tx_timeout,
3385 .ndo_get_stats64 = dev_get_tstats64,
3386 .ndo_set_mac_address = eth_mac_addr,
3387 .ndo_validate_addr = eth_validate_addr,
3388 .ndo_set_rx_mode = rndis_wlan_set_multicast_list,
3389 };
3390
rndis_wlan_bind(struct usbnet * usbdev,struct usb_interface * intf)3391 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3392 {
3393 struct wiphy *wiphy;
3394 struct rndis_wlan_private *priv;
3395 int retval, len;
3396 __le32 tmp;
3397
3398 /* allocate wiphy and rndis private data
3399 * NOTE: We only support a single virtual interface, so wiphy
3400 * and wireless_dev are somewhat synonymous for this device.
3401 */
3402 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3403 if (!wiphy)
3404 return -ENOMEM;
3405
3406 priv = wiphy_priv(wiphy);
3407 usbdev->net->ieee80211_ptr = &priv->wdev;
3408 priv->wdev.wiphy = wiphy;
3409 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3410
3411 /* These have to be initialized before calling generic_rndis_bind().
3412 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3413 */
3414 usbdev->driver_priv = priv;
3415 priv->usbdev = usbdev;
3416
3417 mutex_init(&priv->command_lock);
3418
3419 /* because rndis_command() sleeps we need to use workqueue */
3420 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3421 if (!priv->workqueue) {
3422 wiphy_free(wiphy);
3423 return -ENOMEM;
3424 }
3425 INIT_WORK(&priv->work, rndis_wlan_worker);
3426 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3427 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3428
3429 /* try bind rndis_host */
3430 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3431 if (retval < 0)
3432 goto fail;
3433
3434 /* generic_rndis_bind set packet filter to multicast_all+
3435 * promisc mode which doesn't work well for our devices (device
3436 * picks up rssi to closest station instead of to access point).
3437 *
3438 * rndis_host wants to avoid all OID as much as possible
3439 * so do promisc/multicast handling in rndis_wlan.
3440 */
3441 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3442
3443 tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3444 retval = rndis_set_oid(usbdev,
3445 RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3446 &tmp, sizeof(tmp));
3447
3448 len = sizeof(tmp);
3449 retval = rndis_query_oid(usbdev,
3450 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3451 &tmp, &len);
3452 priv->multicast_size = le32_to_cpu(tmp);
3453 if (retval < 0 || priv->multicast_size < 0)
3454 priv->multicast_size = 0;
3455 if (priv->multicast_size > 0)
3456 usbdev->net->flags |= IFF_MULTICAST;
3457 else
3458 usbdev->net->flags &= ~IFF_MULTICAST;
3459
3460 /* fill-out wiphy structure and register w/ cfg80211 */
3461 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3462 wiphy->privid = rndis_wiphy_privid;
3463 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3464 | BIT(NL80211_IFTYPE_ADHOC);
3465 wiphy->max_scan_ssids = 1;
3466
3467 /* TODO: fill-out band/encr information based on priv->caps */
3468 rndis_wlan_get_caps(usbdev, wiphy);
3469
3470 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3471 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3472 priv->band.channels = priv->channels;
3473 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3474 priv->band.bitrates = priv->rates;
3475 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3476 wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3477 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3478
3479 memcpy(priv->cipher_suites, rndis_cipher_suites,
3480 sizeof(rndis_cipher_suites));
3481 wiphy->cipher_suites = priv->cipher_suites;
3482 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3483
3484 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3485
3486 if (wiphy_register(wiphy)) {
3487 retval = -ENODEV;
3488 goto fail;
3489 }
3490
3491 set_default_iw_params(usbdev);
3492
3493 priv->power_mode = -1;
3494
3495 /* set default rts/frag */
3496 rndis_set_wiphy_params(wiphy,
3497 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3498
3499 /* turn radio off on init */
3500 priv->radio_on = false;
3501 disassociate(usbdev, false);
3502 netif_carrier_off(usbdev->net);
3503
3504 return 0;
3505
3506 fail:
3507 cancel_delayed_work_sync(&priv->dev_poller_work);
3508 cancel_delayed_work_sync(&priv->scan_work);
3509 cancel_work_sync(&priv->work);
3510 destroy_workqueue(priv->workqueue);
3511
3512 wiphy_free(wiphy);
3513 return retval;
3514 }
3515
rndis_wlan_unbind(struct usbnet * usbdev,struct usb_interface * intf)3516 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3517 {
3518 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3519
3520 /* turn radio off */
3521 disassociate(usbdev, false);
3522
3523 cancel_delayed_work_sync(&priv->dev_poller_work);
3524 cancel_delayed_work_sync(&priv->scan_work);
3525 cancel_work_sync(&priv->work);
3526 destroy_workqueue(priv->workqueue);
3527
3528 rndis_unbind(usbdev, intf);
3529
3530 wiphy_unregister(priv->wdev.wiphy);
3531 wiphy_free(priv->wdev.wiphy);
3532 }
3533
rndis_wlan_reset(struct usbnet * usbdev)3534 static int rndis_wlan_reset(struct usbnet *usbdev)
3535 {
3536 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3537 int retval;
3538
3539 netdev_dbg(usbdev->net, "%s()\n", __func__);
3540
3541 retval = rndis_reset(usbdev);
3542 if (retval)
3543 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3544
3545 /* rndis_reset cleared multicast list, so restore here.
3546 (set_multicast_list() also turns on current packet filter) */
3547 set_multicast_list(usbdev);
3548
3549 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3550 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3551
3552 return deauthenticate(usbdev);
3553 }
3554
rndis_wlan_stop(struct usbnet * usbdev)3555 static int rndis_wlan_stop(struct usbnet *usbdev)
3556 {
3557 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3558 int retval;
3559 __le32 filter;
3560
3561 netdev_dbg(usbdev->net, "%s()\n", __func__);
3562
3563 retval = disassociate(usbdev, false);
3564
3565 priv->work_pending = 0;
3566 cancel_delayed_work_sync(&priv->dev_poller_work);
3567 cancel_delayed_work_sync(&priv->scan_work);
3568 cancel_work_sync(&priv->work);
3569 flush_workqueue(priv->workqueue);
3570
3571 if (priv->scan_request) {
3572 struct cfg80211_scan_info info = {
3573 .aborted = true,
3574 };
3575
3576 cfg80211_scan_done(priv->scan_request, &info);
3577 priv->scan_request = NULL;
3578 }
3579
3580 /* Set current packet filter zero to block receiving data packets from
3581 device. */
3582 filter = 0;
3583 rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3584 sizeof(filter));
3585
3586 return retval;
3587 }
3588
3589 static const struct driver_info bcm4320b_info = {
3590 .description = "Wireless RNDIS device, BCM4320b based",
3591 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3592 FLAG_AVOID_UNLINK_URBS,
3593 .bind = rndis_wlan_bind,
3594 .unbind = rndis_wlan_unbind,
3595 .status = rndis_status,
3596 .rx_fixup = rndis_rx_fixup,
3597 .tx_fixup = rndis_tx_fixup,
3598 .reset = rndis_wlan_reset,
3599 .stop = rndis_wlan_stop,
3600 .early_init = bcm4320b_early_init,
3601 .indication = rndis_wlan_indication,
3602 };
3603
3604 static const struct driver_info bcm4320a_info = {
3605 .description = "Wireless RNDIS device, BCM4320a based",
3606 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3607 FLAG_AVOID_UNLINK_URBS,
3608 .bind = rndis_wlan_bind,
3609 .unbind = rndis_wlan_unbind,
3610 .status = rndis_status,
3611 .rx_fixup = rndis_rx_fixup,
3612 .tx_fixup = rndis_tx_fixup,
3613 .reset = rndis_wlan_reset,
3614 .stop = rndis_wlan_stop,
3615 .early_init = bcm4320a_early_init,
3616 .indication = rndis_wlan_indication,
3617 };
3618
3619 static const struct driver_info rndis_wlan_info = {
3620 .description = "Wireless RNDIS device",
3621 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3622 FLAG_AVOID_UNLINK_URBS,
3623 .bind = rndis_wlan_bind,
3624 .unbind = rndis_wlan_unbind,
3625 .status = rndis_status,
3626 .rx_fixup = rndis_rx_fixup,
3627 .tx_fixup = rndis_tx_fixup,
3628 .reset = rndis_wlan_reset,
3629 .stop = rndis_wlan_stop,
3630 .early_init = unknown_early_init,
3631 .indication = rndis_wlan_indication,
3632 };
3633
3634 /*-------------------------------------------------------------------------*/
3635
3636 static const struct usb_device_id products [] = {
3637 #define RNDIS_MASTER_INTERFACE \
3638 .bInterfaceClass = USB_CLASS_COMM, \
3639 .bInterfaceSubClass = 2 /* ACM */, \
3640 .bInterfaceProtocol = 0x0ff
3641
3642 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3643 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3644 */
3645 {
3646 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3647 | USB_DEVICE_ID_MATCH_DEVICE,
3648 .idVendor = 0x0411,
3649 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3650 RNDIS_MASTER_INTERFACE,
3651 .driver_info = (unsigned long) &bcm4320b_info,
3652 }, {
3653 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3654 | USB_DEVICE_ID_MATCH_DEVICE,
3655 .idVendor = 0x0baf,
3656 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3657 RNDIS_MASTER_INTERFACE,
3658 .driver_info = (unsigned long) &bcm4320b_info,
3659 }, {
3660 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3661 | USB_DEVICE_ID_MATCH_DEVICE,
3662 .idVendor = 0x050d,
3663 .idProduct = 0x011b, /* Belkin F5D7051 */
3664 RNDIS_MASTER_INTERFACE,
3665 .driver_info = (unsigned long) &bcm4320b_info,
3666 }, {
3667 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3668 | USB_DEVICE_ID_MATCH_DEVICE,
3669 .idVendor = 0x1799, /* Belkin has two vendor ids */
3670 .idProduct = 0x011b, /* Belkin F5D7051 */
3671 RNDIS_MASTER_INTERFACE,
3672 .driver_info = (unsigned long) &bcm4320b_info,
3673 }, {
3674 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3675 | USB_DEVICE_ID_MATCH_DEVICE,
3676 .idVendor = 0x13b1,
3677 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3678 RNDIS_MASTER_INTERFACE,
3679 .driver_info = (unsigned long) &bcm4320b_info,
3680 }, {
3681 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3682 | USB_DEVICE_ID_MATCH_DEVICE,
3683 .idVendor = 0x13b1,
3684 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3685 RNDIS_MASTER_INTERFACE,
3686 .driver_info = (unsigned long) &bcm4320b_info,
3687 }, {
3688 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3689 | USB_DEVICE_ID_MATCH_DEVICE,
3690 .idVendor = 0x0b05,
3691 .idProduct = 0x1717, /* Asus WL169gE */
3692 RNDIS_MASTER_INTERFACE,
3693 .driver_info = (unsigned long) &bcm4320b_info,
3694 }, {
3695 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3696 | USB_DEVICE_ID_MATCH_DEVICE,
3697 .idVendor = 0x0a5c,
3698 .idProduct = 0xd11b, /* Eminent EM4045 */
3699 RNDIS_MASTER_INTERFACE,
3700 .driver_info = (unsigned long) &bcm4320b_info,
3701 }, {
3702 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3703 | USB_DEVICE_ID_MATCH_DEVICE,
3704 .idVendor = 0x1690,
3705 .idProduct = 0x0715, /* BT Voyager 1055 */
3706 RNDIS_MASTER_INTERFACE,
3707 .driver_info = (unsigned long) &bcm4320b_info,
3708 },
3709 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3710 * parameters available, hardware probably contain older firmware version with
3711 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3712 */
3713 {
3714 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3715 | USB_DEVICE_ID_MATCH_DEVICE,
3716 .idVendor = 0x13b1,
3717 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3718 RNDIS_MASTER_INTERFACE,
3719 .driver_info = (unsigned long) &bcm4320a_info,
3720 }, {
3721 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3722 | USB_DEVICE_ID_MATCH_DEVICE,
3723 .idVendor = 0x0baf,
3724 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3725 RNDIS_MASTER_INTERFACE,
3726 .driver_info = (unsigned long) &bcm4320a_info,
3727 }, {
3728 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3729 | USB_DEVICE_ID_MATCH_DEVICE,
3730 .idVendor = 0x0411,
3731 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3732 RNDIS_MASTER_INTERFACE,
3733 .driver_info = (unsigned long) &bcm4320a_info,
3734 },
3735 /* Generic Wireless RNDIS devices that we don't have exact
3736 * idVendor/idProduct/chip yet.
3737 */
3738 {
3739 /* RNDIS is MSFT's un-official variant of CDC ACM */
3740 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3741 .driver_info = (unsigned long) &rndis_wlan_info,
3742 }, {
3743 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3744 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3745 .driver_info = (unsigned long) &rndis_wlan_info,
3746 },
3747 { }, // END
3748 };
3749 MODULE_DEVICE_TABLE(usb, products);
3750
3751 static struct usb_driver rndis_wlan_driver = {
3752 .name = "rndis_wlan",
3753 .id_table = products,
3754 .probe = usbnet_probe,
3755 .disconnect = usbnet_disconnect,
3756 .suspend = usbnet_suspend,
3757 .resume = usbnet_resume,
3758 .disable_hub_initiated_lpm = 1,
3759 };
3760
3761 module_usb_driver(rndis_wlan_driver);
3762
3763 MODULE_AUTHOR("Bjorge Dijkstra");
3764 MODULE_AUTHOR("Jussi Kivilinna");
3765 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3766 MODULE_LICENSE("GPL");
3767
3768
