1 /*
2 * Driver for RNDIS based wireless USB devices.
3 *
4 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
5 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Portions of this file are based on NDISwrapper project,
22 * Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
23 * http://ndiswrapper.sourceforge.net/
24 */
25
26 // #define DEBUG // error path messages, extra info
27 // #define VERBOSE // more; success messages
28
29 #include <linux/module.h>
30 #include <linux/init.h>
31 #include <linux/netdevice.h>
32 #include <linux/etherdevice.h>
33 #include <linux/ethtool.h>
34 #include <linux/workqueue.h>
35 #include <linux/mutex.h>
36 #include <linux/mii.h>
37 #include <linux/usb.h>
38 #include <linux/usb/cdc.h>
39 #include <linux/wireless.h>
40 #include <linux/ieee80211.h>
41 #include <linux/if_arp.h>
42 #include <linux/ctype.h>
43 #include <linux/spinlock.h>
44 #include <linux/slab.h>
45 #include <net/iw_handler.h>
46 #include <net/cfg80211.h>
47 #include <linux/usb/usbnet.h>
48 #include <linux/usb/rndis_host.h>
49
50
51 /* NOTE: All these are settings for Broadcom chipset */
52 static char modparam_country[4] = "EU";
53 module_param_string(country, modparam_country, 4, 0444);
54 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
55
56 static int modparam_frameburst = 1;
57 module_param_named(frameburst, modparam_frameburst, int, 0444);
58 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
59
60 static int modparam_afterburner = 0;
61 module_param_named(afterburner, modparam_afterburner, int, 0444);
62 MODULE_PARM_DESC(afterburner,
63 "enable afterburner aka '125 High Speed Mode' (default: off)");
64
65 static int modparam_power_save = 0;
66 module_param_named(power_save, modparam_power_save, int, 0444);
67 MODULE_PARM_DESC(power_save,
68 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
69
70 static int modparam_power_output = 3;
71 module_param_named(power_output, modparam_power_output, int, 0444);
72 MODULE_PARM_DESC(power_output,
73 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
74
75 static int modparam_roamtrigger = -70;
76 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
77 MODULE_PARM_DESC(roamtrigger,
78 "set roaming dBm trigger: -80=optimize for distance, "
79 "-60=bandwidth (default: -70)");
80
81 static int modparam_roamdelta = 1;
82 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
83 MODULE_PARM_DESC(roamdelta,
84 "set roaming tendency: 0=aggressive, 1=moderate, "
85 "2=conservative (default: moderate)");
86
87 static int modparam_workaround_interval;
88 module_param_named(workaround_interval, modparam_workaround_interval,
89 int, 0444);
90 MODULE_PARM_DESC(workaround_interval,
91 "set stall workaround interval in msecs (0=disabled) (default: 0)");
92
93
94 /* various RNDIS OID defs */
95 #define OID_GEN_LINK_SPEED cpu_to_le32(0x00010107)
96 #define OID_GEN_RNDIS_CONFIG_PARAMETER cpu_to_le32(0x0001021b)
97
98 #define OID_GEN_XMIT_OK cpu_to_le32(0x00020101)
99 #define OID_GEN_RCV_OK cpu_to_le32(0x00020102)
100 #define OID_GEN_XMIT_ERROR cpu_to_le32(0x00020103)
101 #define OID_GEN_RCV_ERROR cpu_to_le32(0x00020104)
102 #define OID_GEN_RCV_NO_BUFFER cpu_to_le32(0x00020105)
103
104 #define OID_802_3_CURRENT_ADDRESS cpu_to_le32(0x01010102)
105 #define OID_802_3_MULTICAST_LIST cpu_to_le32(0x01010103)
106 #define OID_802_3_MAXIMUM_LIST_SIZE cpu_to_le32(0x01010104)
107
108 #define OID_802_11_BSSID cpu_to_le32(0x0d010101)
109 #define OID_802_11_SSID cpu_to_le32(0x0d010102)
110 #define OID_802_11_INFRASTRUCTURE_MODE cpu_to_le32(0x0d010108)
111 #define OID_802_11_ADD_WEP cpu_to_le32(0x0d010113)
112 #define OID_802_11_REMOVE_WEP cpu_to_le32(0x0d010114)
113 #define OID_802_11_DISASSOCIATE cpu_to_le32(0x0d010115)
114 #define OID_802_11_AUTHENTICATION_MODE cpu_to_le32(0x0d010118)
115 #define OID_802_11_PRIVACY_FILTER cpu_to_le32(0x0d010119)
116 #define OID_802_11_BSSID_LIST_SCAN cpu_to_le32(0x0d01011a)
117 #define OID_802_11_ENCRYPTION_STATUS cpu_to_le32(0x0d01011b)
118 #define OID_802_11_ADD_KEY cpu_to_le32(0x0d01011d)
119 #define OID_802_11_REMOVE_KEY cpu_to_le32(0x0d01011e)
120 #define OID_802_11_ASSOCIATION_INFORMATION cpu_to_le32(0x0d01011f)
121 #define OID_802_11_CAPABILITY cpu_to_le32(0x0d010122)
122 #define OID_802_11_PMKID cpu_to_le32(0x0d010123)
123 #define OID_802_11_NETWORK_TYPES_SUPPORTED cpu_to_le32(0x0d010203)
124 #define OID_802_11_NETWORK_TYPE_IN_USE cpu_to_le32(0x0d010204)
125 #define OID_802_11_TX_POWER_LEVEL cpu_to_le32(0x0d010205)
126 #define OID_802_11_RSSI cpu_to_le32(0x0d010206)
127 #define OID_802_11_RSSI_TRIGGER cpu_to_le32(0x0d010207)
128 #define OID_802_11_FRAGMENTATION_THRESHOLD cpu_to_le32(0x0d010209)
129 #define OID_802_11_RTS_THRESHOLD cpu_to_le32(0x0d01020a)
130 #define OID_802_11_SUPPORTED_RATES cpu_to_le32(0x0d01020e)
131 #define OID_802_11_CONFIGURATION cpu_to_le32(0x0d010211)
132 #define OID_802_11_POWER_MODE cpu_to_le32(0x0d010216)
133 #define OID_802_11_BSSID_LIST cpu_to_le32(0x0d010217)
134
135
136 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
137 #define WL_NOISE -96 /* typical noise level in dBm */
138 #define WL_SIGMAX -32 /* typical maximum signal level in dBm */
139
140
141 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
142 * based on wireless rndis) has default txpower of 13dBm.
143 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
144 * 100% : 20 mW ~ 13dBm
145 * 75% : 15 mW ~ 12dBm
146 * 50% : 10 mW ~ 10dBm
147 * 25% : 5 mW ~ 7dBm
148 */
149 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
150 #define BCM4320_DEFAULT_TXPOWER_DBM_75 12
151 #define BCM4320_DEFAULT_TXPOWER_DBM_50 10
152 #define BCM4320_DEFAULT_TXPOWER_DBM_25 7
153
154
155 /* codes for "status" field of completion messages */
156 #define RNDIS_STATUS_ADAPTER_NOT_READY cpu_to_le32(0xc0010011)
157 #define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012)
158
159
160 /* Known device types */
161 #define RNDIS_UNKNOWN 0
162 #define RNDIS_BCM4320A 1
163 #define RNDIS_BCM4320B 2
164
165
166 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
167 * slightly modified for datatype endianess, etc
168 */
169 #define NDIS_802_11_LENGTH_SSID 32
170 #define NDIS_802_11_LENGTH_RATES 8
171 #define NDIS_802_11_LENGTH_RATES_EX 16
172
173 enum ndis_80211_net_type {
174 NDIS_80211_TYPE_FREQ_HOP,
175 NDIS_80211_TYPE_DIRECT_SEQ,
176 NDIS_80211_TYPE_OFDM_A,
177 NDIS_80211_TYPE_OFDM_G
178 };
179
180 enum ndis_80211_net_infra {
181 NDIS_80211_INFRA_ADHOC,
182 NDIS_80211_INFRA_INFRA,
183 NDIS_80211_INFRA_AUTO_UNKNOWN
184 };
185
186 enum ndis_80211_auth_mode {
187 NDIS_80211_AUTH_OPEN,
188 NDIS_80211_AUTH_SHARED,
189 NDIS_80211_AUTH_AUTO_SWITCH,
190 NDIS_80211_AUTH_WPA,
191 NDIS_80211_AUTH_WPA_PSK,
192 NDIS_80211_AUTH_WPA_NONE,
193 NDIS_80211_AUTH_WPA2,
194 NDIS_80211_AUTH_WPA2_PSK
195 };
196
197 enum ndis_80211_encr_status {
198 NDIS_80211_ENCR_WEP_ENABLED,
199 NDIS_80211_ENCR_DISABLED,
200 NDIS_80211_ENCR_WEP_KEY_ABSENT,
201 NDIS_80211_ENCR_NOT_SUPPORTED,
202 NDIS_80211_ENCR_TKIP_ENABLED,
203 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
204 NDIS_80211_ENCR_CCMP_ENABLED,
205 NDIS_80211_ENCR_CCMP_KEY_ABSENT
206 };
207
208 enum ndis_80211_priv_filter {
209 NDIS_80211_PRIV_ACCEPT_ALL,
210 NDIS_80211_PRIV_8021X_WEP
211 };
212
213 enum ndis_80211_status_type {
214 NDIS_80211_STATUSTYPE_AUTHENTICATION,
215 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
216 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
217 NDIS_80211_STATUSTYPE_RADIOSTATE,
218 };
219
220 enum ndis_80211_media_stream_mode {
221 NDIS_80211_MEDIA_STREAM_OFF,
222 NDIS_80211_MEDIA_STREAM_ON
223 };
224
225 enum ndis_80211_radio_status {
226 NDIS_80211_RADIO_STATUS_ON,
227 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
228 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
229 };
230
231 enum ndis_80211_addkey_bits {
232 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
233 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
234 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
235 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
236 };
237
238 enum ndis_80211_addwep_bits {
239 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
240 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
241 };
242
243 enum ndis_80211_power_mode {
244 NDIS_80211_POWER_MODE_CAM,
245 NDIS_80211_POWER_MODE_MAX_PSP,
246 NDIS_80211_POWER_MODE_FAST_PSP,
247 };
248
249 struct ndis_80211_auth_request {
250 __le32 length;
251 u8 bssid[6];
252 u8 padding[2];
253 __le32 flags;
254 } __packed;
255
256 struct ndis_80211_pmkid_candidate {
257 u8 bssid[6];
258 u8 padding[2];
259 __le32 flags;
260 } __packed;
261
262 struct ndis_80211_pmkid_cand_list {
263 __le32 version;
264 __le32 num_candidates;
265 struct ndis_80211_pmkid_candidate candidate_list[0];
266 } __packed;
267
268 struct ndis_80211_status_indication {
269 __le32 status_type;
270 union {
271 __le32 media_stream_mode;
272 __le32 radio_status;
273 struct ndis_80211_auth_request auth_request[0];
274 struct ndis_80211_pmkid_cand_list cand_list;
275 } u;
276 } __packed;
277
278 struct ndis_80211_ssid {
279 __le32 length;
280 u8 essid[NDIS_802_11_LENGTH_SSID];
281 } __packed;
282
283 struct ndis_80211_conf_freq_hop {
284 __le32 length;
285 __le32 hop_pattern;
286 __le32 hop_set;
287 __le32 dwell_time;
288 } __packed;
289
290 struct ndis_80211_conf {
291 __le32 length;
292 __le32 beacon_period;
293 __le32 atim_window;
294 __le32 ds_config;
295 struct ndis_80211_conf_freq_hop fh_config;
296 } __packed;
297
298 struct ndis_80211_bssid_ex {
299 __le32 length;
300 u8 mac[6];
301 u8 padding[2];
302 struct ndis_80211_ssid ssid;
303 __le32 privacy;
304 __le32 rssi;
305 __le32 net_type;
306 struct ndis_80211_conf config;
307 __le32 net_infra;
308 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
309 __le32 ie_length;
310 u8 ies[0];
311 } __packed;
312
313 struct ndis_80211_bssid_list_ex {
314 __le32 num_items;
315 struct ndis_80211_bssid_ex bssid[0];
316 } __packed;
317
318 struct ndis_80211_fixed_ies {
319 u8 timestamp[8];
320 __le16 beacon_interval;
321 __le16 capabilities;
322 } __packed;
323
324 struct ndis_80211_wep_key {
325 __le32 size;
326 __le32 index;
327 __le32 length;
328 u8 material[32];
329 } __packed;
330
331 struct ndis_80211_key {
332 __le32 size;
333 __le32 index;
334 __le32 length;
335 u8 bssid[6];
336 u8 padding[6];
337 u8 rsc[8];
338 u8 material[32];
339 } __packed;
340
341 struct ndis_80211_remove_key {
342 __le32 size;
343 __le32 index;
344 u8 bssid[6];
345 u8 padding[2];
346 } __packed;
347
348 struct ndis_config_param {
349 __le32 name_offs;
350 __le32 name_length;
351 __le32 type;
352 __le32 value_offs;
353 __le32 value_length;
354 } __packed;
355
356 struct ndis_80211_assoc_info {
357 __le32 length;
358 __le16 req_ies;
359 struct req_ie {
360 __le16 capa;
361 __le16 listen_interval;
362 u8 cur_ap_address[6];
363 } req_ie;
364 __le32 req_ie_length;
365 __le32 offset_req_ies;
366 __le16 resp_ies;
367 struct resp_ie {
368 __le16 capa;
369 __le16 status_code;
370 __le16 assoc_id;
371 } resp_ie;
372 __le32 resp_ie_length;
373 __le32 offset_resp_ies;
374 } __packed;
375
376 struct ndis_80211_auth_encr_pair {
377 __le32 auth_mode;
378 __le32 encr_mode;
379 } __packed;
380
381 struct ndis_80211_capability {
382 __le32 length;
383 __le32 version;
384 __le32 num_pmkids;
385 __le32 num_auth_encr_pair;
386 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
387 } __packed;
388
389 struct ndis_80211_bssid_info {
390 u8 bssid[6];
391 u8 pmkid[16];
392 };
393
394 struct ndis_80211_pmkid {
395 __le32 length;
396 __le32 bssid_info_count;
397 struct ndis_80211_bssid_info bssid_info[0];
398 };
399
400 /*
401 * private data
402 */
403 #define NET_TYPE_11FB 0
404
405 #define CAP_MODE_80211A 1
406 #define CAP_MODE_80211B 2
407 #define CAP_MODE_80211G 4
408 #define CAP_MODE_MASK 7
409
410 #define WORK_LINK_UP (1<<0)
411 #define WORK_LINK_DOWN (1<<1)
412 #define WORK_SET_MULTICAST_LIST (1<<2)
413
414 #define RNDIS_WLAN_ALG_NONE 0
415 #define RNDIS_WLAN_ALG_WEP (1<<0)
416 #define RNDIS_WLAN_ALG_TKIP (1<<1)
417 #define RNDIS_WLAN_ALG_CCMP (1<<2)
418
419 #define RNDIS_WLAN_KEY_MGMT_NONE 0
420 #define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
421 #define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
422
423 #define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
424
425 static const struct ieee80211_channel rndis_channels[] = {
426 { .center_freq = 2412 },
427 { .center_freq = 2417 },
428 { .center_freq = 2422 },
429 { .center_freq = 2427 },
430 { .center_freq = 2432 },
431 { .center_freq = 2437 },
432 { .center_freq = 2442 },
433 { .center_freq = 2447 },
434 { .center_freq = 2452 },
435 { .center_freq = 2457 },
436 { .center_freq = 2462 },
437 { .center_freq = 2467 },
438 { .center_freq = 2472 },
439 { .center_freq = 2484 },
440 };
441
442 static const struct ieee80211_rate rndis_rates[] = {
443 { .bitrate = 10 },
444 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
445 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
446 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
447 { .bitrate = 60 },
448 { .bitrate = 90 },
449 { .bitrate = 120 },
450 { .bitrate = 180 },
451 { .bitrate = 240 },
452 { .bitrate = 360 },
453 { .bitrate = 480 },
454 { .bitrate = 540 }
455 };
456
457 static const u32 rndis_cipher_suites[] = {
458 WLAN_CIPHER_SUITE_WEP40,
459 WLAN_CIPHER_SUITE_WEP104,
460 WLAN_CIPHER_SUITE_TKIP,
461 WLAN_CIPHER_SUITE_CCMP,
462 };
463
464 struct rndis_wlan_encr_key {
465 int len;
466 u32 cipher;
467 u8 material[32];
468 u8 bssid[ETH_ALEN];
469 bool pairwise;
470 bool tx_key;
471 };
472
473 /* RNDIS device private data */
474 struct rndis_wlan_private {
475 struct usbnet *usbdev;
476
477 struct wireless_dev wdev;
478
479 struct cfg80211_scan_request *scan_request;
480
481 struct workqueue_struct *workqueue;
482 struct delayed_work dev_poller_work;
483 struct delayed_work scan_work;
484 struct work_struct work;
485 struct mutex command_lock;
486 unsigned long work_pending;
487 int last_qual;
488 s32 cqm_rssi_thold;
489 u32 cqm_rssi_hyst;
490 int last_cqm_event_rssi;
491
492 struct ieee80211_supported_band band;
493 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
494 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
495 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
496
497 int device_type;
498 int caps;
499 int multicast_size;
500
501 /* module parameters */
502 char param_country[4];
503 int param_frameburst;
504 int param_afterburner;
505 int param_power_save;
506 int param_power_output;
507 int param_roamtrigger;
508 int param_roamdelta;
509 u32 param_workaround_interval;
510
511 /* hardware state */
512 bool radio_on;
513 int power_mode;
514 int infra_mode;
515 bool connected;
516 u8 bssid[ETH_ALEN];
517 __le32 current_command_oid;
518
519 /* encryption stuff */
520 int encr_tx_key_index;
521 struct rndis_wlan_encr_key encr_keys[4];
522 int wpa_version;
523
524 u8 command_buffer[COMMAND_BUFFER_SIZE];
525 };
526
527 /*
528 * cfg80211 ops
529 */
530 static int rndis_change_virtual_intf(struct wiphy *wiphy,
531 struct net_device *dev,
532 enum nl80211_iftype type, u32 *flags,
533 struct vif_params *params);
534
535 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
536 struct cfg80211_scan_request *request);
537
538 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
539
540 static int rndis_set_tx_power(struct wiphy *wiphy,
541 enum nl80211_tx_power_setting type,
542 int mbm);
543 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
544
545 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
546 struct cfg80211_connect_params *sme);
547
548 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
549 u16 reason_code);
550
551 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
552 struct cfg80211_ibss_params *params);
553
554 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
555
556 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
557 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
558
559 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
560 u8 key_index, bool pairwise, const u8 *mac_addr,
561 struct key_params *params);
562
563 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
564 u8 key_index, bool pairwise, const u8 *mac_addr);
565
566 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
567 u8 key_index, bool unicast, bool multicast);
568
569 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
570 u8 *mac, struct station_info *sinfo);
571
572 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
573 int idx, u8 *mac, struct station_info *sinfo);
574
575 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
576 struct cfg80211_pmksa *pmksa);
577
578 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
579 struct cfg80211_pmksa *pmksa);
580
581 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
582
583 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
584 bool enabled, int timeout);
585
586 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
587 struct net_device *dev,
588 s32 rssi_thold, u32 rssi_hyst);
589
590 static const struct cfg80211_ops rndis_config_ops = {
591 .change_virtual_intf = rndis_change_virtual_intf,
592 .scan = rndis_scan,
593 .set_wiphy_params = rndis_set_wiphy_params,
594 .set_tx_power = rndis_set_tx_power,
595 .get_tx_power = rndis_get_tx_power,
596 .connect = rndis_connect,
597 .disconnect = rndis_disconnect,
598 .join_ibss = rndis_join_ibss,
599 .leave_ibss = rndis_leave_ibss,
600 .set_channel = rndis_set_channel,
601 .add_key = rndis_add_key,
602 .del_key = rndis_del_key,
603 .set_default_key = rndis_set_default_key,
604 .get_station = rndis_get_station,
605 .dump_station = rndis_dump_station,
606 .set_pmksa = rndis_set_pmksa,
607 .del_pmksa = rndis_del_pmksa,
608 .flush_pmksa = rndis_flush_pmksa,
609 .set_power_mgmt = rndis_set_power_mgmt,
610 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
611 };
612
613 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
614
615
get_rndis_wlan_priv(struct usbnet * dev)616 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
617 {
618 return (struct rndis_wlan_private *)dev->driver_priv;
619 }
620
get_bcm4320_power_dbm(struct rndis_wlan_private * priv)621 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
622 {
623 switch (priv->param_power_output) {
624 default:
625 case 3:
626 return BCM4320_DEFAULT_TXPOWER_DBM_100;
627 case 2:
628 return BCM4320_DEFAULT_TXPOWER_DBM_75;
629 case 1:
630 return BCM4320_DEFAULT_TXPOWER_DBM_50;
631 case 0:
632 return BCM4320_DEFAULT_TXPOWER_DBM_25;
633 }
634 }
635
is_wpa_key(struct rndis_wlan_private * priv,int idx)636 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
637 {
638 int cipher = priv->encr_keys[idx].cipher;
639
640 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
641 cipher == WLAN_CIPHER_SUITE_TKIP);
642 }
643
rndis_cipher_to_alg(u32 cipher)644 static int rndis_cipher_to_alg(u32 cipher)
645 {
646 switch (cipher) {
647 default:
648 return RNDIS_WLAN_ALG_NONE;
649 case WLAN_CIPHER_SUITE_WEP40:
650 case WLAN_CIPHER_SUITE_WEP104:
651 return RNDIS_WLAN_ALG_WEP;
652 case WLAN_CIPHER_SUITE_TKIP:
653 return RNDIS_WLAN_ALG_TKIP;
654 case WLAN_CIPHER_SUITE_CCMP:
655 return RNDIS_WLAN_ALG_CCMP;
656 }
657 }
658
rndis_akm_suite_to_key_mgmt(u32 akm_suite)659 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
660 {
661 switch (akm_suite) {
662 default:
663 return RNDIS_WLAN_KEY_MGMT_NONE;
664 case WLAN_AKM_SUITE_8021X:
665 return RNDIS_WLAN_KEY_MGMT_802_1X;
666 case WLAN_AKM_SUITE_PSK:
667 return RNDIS_WLAN_KEY_MGMT_PSK;
668 }
669 }
670
671 #ifdef DEBUG
oid_to_string(__le32 oid)672 static const char *oid_to_string(__le32 oid)
673 {
674 switch (oid) {
675 #define OID_STR(oid) case oid: return(#oid)
676 /* from rndis_host.h */
677 OID_STR(OID_802_3_PERMANENT_ADDRESS);
678 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
679 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
680 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
681
682 /* from rndis_wlan.c */
683 OID_STR(OID_GEN_LINK_SPEED);
684 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
685
686 OID_STR(OID_GEN_XMIT_OK);
687 OID_STR(OID_GEN_RCV_OK);
688 OID_STR(OID_GEN_XMIT_ERROR);
689 OID_STR(OID_GEN_RCV_ERROR);
690 OID_STR(OID_GEN_RCV_NO_BUFFER);
691
692 OID_STR(OID_802_3_CURRENT_ADDRESS);
693 OID_STR(OID_802_3_MULTICAST_LIST);
694 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
695
696 OID_STR(OID_802_11_BSSID);
697 OID_STR(OID_802_11_SSID);
698 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
699 OID_STR(OID_802_11_ADD_WEP);
700 OID_STR(OID_802_11_REMOVE_WEP);
701 OID_STR(OID_802_11_DISASSOCIATE);
702 OID_STR(OID_802_11_AUTHENTICATION_MODE);
703 OID_STR(OID_802_11_PRIVACY_FILTER);
704 OID_STR(OID_802_11_BSSID_LIST_SCAN);
705 OID_STR(OID_802_11_ENCRYPTION_STATUS);
706 OID_STR(OID_802_11_ADD_KEY);
707 OID_STR(OID_802_11_REMOVE_KEY);
708 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
709 OID_STR(OID_802_11_CAPABILITY);
710 OID_STR(OID_802_11_PMKID);
711 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
712 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
713 OID_STR(OID_802_11_TX_POWER_LEVEL);
714 OID_STR(OID_802_11_RSSI);
715 OID_STR(OID_802_11_RSSI_TRIGGER);
716 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
717 OID_STR(OID_802_11_RTS_THRESHOLD);
718 OID_STR(OID_802_11_SUPPORTED_RATES);
719 OID_STR(OID_802_11_CONFIGURATION);
720 OID_STR(OID_802_11_POWER_MODE);
721 OID_STR(OID_802_11_BSSID_LIST);
722 #undef OID_STR
723 }
724
725 return "?";
726 }
727 #else
oid_to_string(__le32 oid)728 static const char *oid_to_string(__le32 oid)
729 {
730 return "?";
731 }
732 #endif
733
734 /* translate error code */
rndis_error_status(__le32 rndis_status)735 static int rndis_error_status(__le32 rndis_status)
736 {
737 int ret = -EINVAL;
738 switch (rndis_status) {
739 case RNDIS_STATUS_SUCCESS:
740 ret = 0;
741 break;
742 case RNDIS_STATUS_FAILURE:
743 case RNDIS_STATUS_INVALID_DATA:
744 ret = -EINVAL;
745 break;
746 case RNDIS_STATUS_NOT_SUPPORTED:
747 ret = -EOPNOTSUPP;
748 break;
749 case RNDIS_STATUS_ADAPTER_NOT_READY:
750 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
751 ret = -EBUSY;
752 break;
753 }
754 return ret;
755 }
756
rndis_query_oid(struct usbnet * dev,__le32 oid,void * data,int * len)757 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
758 {
759 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
760 union {
761 void *buf;
762 struct rndis_msg_hdr *header;
763 struct rndis_query *get;
764 struct rndis_query_c *get_c;
765 } u;
766 int ret, buflen;
767 int resplen, respoffs, copylen;
768
769 buflen = *len + sizeof(*u.get);
770 if (buflen < CONTROL_BUFFER_SIZE)
771 buflen = CONTROL_BUFFER_SIZE;
772
773 if (buflen > COMMAND_BUFFER_SIZE) {
774 u.buf = kmalloc(buflen, GFP_KERNEL);
775 if (!u.buf)
776 return -ENOMEM;
777 } else {
778 u.buf = priv->command_buffer;
779 }
780
781 mutex_lock(&priv->command_lock);
782
783 memset(u.get, 0, sizeof *u.get);
784 u.get->msg_type = RNDIS_MSG_QUERY;
785 u.get->msg_len = cpu_to_le32(sizeof *u.get);
786 u.get->oid = oid;
787
788 priv->current_command_oid = oid;
789 ret = rndis_command(dev, u.header, buflen);
790 priv->current_command_oid = 0;
791 if (ret < 0)
792 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
793 __func__, oid_to_string(oid), ret,
794 le32_to_cpu(u.get_c->status));
795
796 if (ret == 0) {
797 resplen = le32_to_cpu(u.get_c->len);
798 respoffs = le32_to_cpu(u.get_c->offset) + 8;
799
800 if (respoffs > buflen) {
801 /* Device returned data offset outside buffer, error. */
802 netdev_dbg(dev->net, "%s(%s): received invalid "
803 "data offset: %d > %d\n", __func__,
804 oid_to_string(oid), respoffs, buflen);
805
806 ret = -EINVAL;
807 goto exit_unlock;
808 }
809
810 if ((resplen + respoffs) > buflen) {
811 /* Device would have returned more data if buffer would
812 * have been big enough. Copy just the bits that we got.
813 */
814 copylen = buflen - respoffs;
815 } else {
816 copylen = resplen;
817 }
818
819 if (copylen > *len)
820 copylen = *len;
821
822 memcpy(data, u.buf + respoffs, copylen);
823
824 *len = resplen;
825
826 ret = rndis_error_status(u.get_c->status);
827 if (ret < 0)
828 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
829 __func__, oid_to_string(oid),
830 le32_to_cpu(u.get_c->status), ret);
831 }
832
833 exit_unlock:
834 mutex_unlock(&priv->command_lock);
835
836 if (u.buf != priv->command_buffer)
837 kfree(u.buf);
838 return ret;
839 }
840
rndis_set_oid(struct usbnet * dev,__le32 oid,const void * data,int len)841 static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
842 int len)
843 {
844 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
845 union {
846 void *buf;
847 struct rndis_msg_hdr *header;
848 struct rndis_set *set;
849 struct rndis_set_c *set_c;
850 } u;
851 int ret, buflen;
852
853 buflen = len + sizeof(*u.set);
854 if (buflen < CONTROL_BUFFER_SIZE)
855 buflen = CONTROL_BUFFER_SIZE;
856
857 if (buflen > COMMAND_BUFFER_SIZE) {
858 u.buf = kmalloc(buflen, GFP_KERNEL);
859 if (!u.buf)
860 return -ENOMEM;
861 } else {
862 u.buf = priv->command_buffer;
863 }
864
865 mutex_lock(&priv->command_lock);
866
867 memset(u.set, 0, sizeof *u.set);
868 u.set->msg_type = RNDIS_MSG_SET;
869 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
870 u.set->oid = oid;
871 u.set->len = cpu_to_le32(len);
872 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
873 u.set->handle = cpu_to_le32(0);
874 memcpy(u.buf + sizeof(*u.set), data, len);
875
876 priv->current_command_oid = oid;
877 ret = rndis_command(dev, u.header, buflen);
878 priv->current_command_oid = 0;
879 if (ret < 0)
880 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
881 __func__, oid_to_string(oid), ret,
882 le32_to_cpu(u.set_c->status));
883
884 if (ret == 0) {
885 ret = rndis_error_status(u.set_c->status);
886
887 if (ret < 0)
888 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
889 __func__, oid_to_string(oid),
890 le32_to_cpu(u.set_c->status), ret);
891 }
892
893 mutex_unlock(&priv->command_lock);
894
895 if (u.buf != priv->command_buffer)
896 kfree(u.buf);
897 return ret;
898 }
899
rndis_reset(struct usbnet * usbdev)900 static int rndis_reset(struct usbnet *usbdev)
901 {
902 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
903 struct rndis_reset *reset;
904 int ret;
905
906 mutex_lock(&priv->command_lock);
907
908 reset = (void *)priv->command_buffer;
909 memset(reset, 0, sizeof(*reset));
910 reset->msg_type = RNDIS_MSG_RESET;
911 reset->msg_len = cpu_to_le32(sizeof(*reset));
912 priv->current_command_oid = 0;
913 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
914
915 mutex_unlock(&priv->command_lock);
916
917 if (ret < 0)
918 return ret;
919 return 0;
920 }
921
922 /*
923 * Specs say that we can only set config parameters only soon after device
924 * initialization.
925 * value_type: 0 = u32, 2 = unicode string
926 */
rndis_set_config_parameter(struct usbnet * dev,char * param,int value_type,void * value)927 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
928 int value_type, void *value)
929 {
930 struct ndis_config_param *infobuf;
931 int value_len, info_len, param_len, ret, i;
932 __le16 *unibuf;
933 __le32 *dst_value;
934
935 if (value_type == 0)
936 value_len = sizeof(__le32);
937 else if (value_type == 2)
938 value_len = strlen(value) * sizeof(__le16);
939 else
940 return -EINVAL;
941
942 param_len = strlen(param) * sizeof(__le16);
943 info_len = sizeof(*infobuf) + param_len + value_len;
944
945 #ifdef DEBUG
946 info_len += 12;
947 #endif
948 infobuf = kmalloc(info_len, GFP_KERNEL);
949 if (!infobuf)
950 return -ENOMEM;
951
952 #ifdef DEBUG
953 info_len -= 12;
954 /* extra 12 bytes are for padding (debug output) */
955 memset(infobuf, 0xCC, info_len + 12);
956 #endif
957
958 if (value_type == 2)
959 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
960 param, (u8 *)value);
961 else
962 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
963 param, *(u32 *)value);
964
965 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
966 infobuf->name_length = cpu_to_le32(param_len);
967 infobuf->type = cpu_to_le32(value_type);
968 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
969 infobuf->value_length = cpu_to_le32(value_len);
970
971 /* simple string to unicode string conversion */
972 unibuf = (void *)infobuf + sizeof(*infobuf);
973 for (i = 0; i < param_len / sizeof(__le16); i++)
974 unibuf[i] = cpu_to_le16(param[i]);
975
976 if (value_type == 2) {
977 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
978 for (i = 0; i < value_len / sizeof(__le16); i++)
979 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
980 } else {
981 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
982 *dst_value = cpu_to_le32(*(u32 *)value);
983 }
984
985 #ifdef DEBUG
986 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
987 for (i = 0; i < info_len; i += 12) {
988 u32 *tmp = (u32 *)((u8 *)infobuf + i);
989 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
990 cpu_to_be32(tmp[0]),
991 cpu_to_be32(tmp[1]),
992 cpu_to_be32(tmp[2]));
993 }
994 #endif
995
996 ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
997 infobuf, info_len);
998 if (ret != 0)
999 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
1000 ret);
1001
1002 kfree(infobuf);
1003 return ret;
1004 }
1005
rndis_set_config_parameter_str(struct usbnet * dev,char * param,char * value)1006 static int rndis_set_config_parameter_str(struct usbnet *dev,
1007 char *param, char *value)
1008 {
1009 return rndis_set_config_parameter(dev, param, 2, value);
1010 }
1011
1012 /*
1013 * data conversion functions
1014 */
level_to_qual(int level)1015 static int level_to_qual(int level)
1016 {
1017 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
1018 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
1019 }
1020
1021 /*
1022 * common functions
1023 */
1024 static int set_infra_mode(struct usbnet *usbdev, int mode);
1025 static void restore_keys(struct usbnet *usbdev);
1026 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1027 bool *matched);
1028
rndis_start_bssid_list_scan(struct usbnet * usbdev)1029 static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1030 {
1031 __le32 tmp;
1032
1033 /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1034 tmp = cpu_to_le32(1);
1035 return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1036 sizeof(tmp));
1037 }
1038
set_essid(struct usbnet * usbdev,struct ndis_80211_ssid * ssid)1039 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1040 {
1041 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1042 int ret;
1043
1044 ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1045 if (ret < 0) {
1046 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1047 return ret;
1048 }
1049 if (ret == 0) {
1050 priv->radio_on = true;
1051 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1052 }
1053
1054 return ret;
1055 }
1056
set_bssid(struct usbnet * usbdev,const u8 * bssid)1057 static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1058 {
1059 int ret;
1060
1061 ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1062 if (ret < 0) {
1063 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1064 bssid, ret);
1065 return ret;
1066 }
1067
1068 return ret;
1069 }
1070
clear_bssid(struct usbnet * usbdev)1071 static int clear_bssid(struct usbnet *usbdev)
1072 {
1073 static const u8 broadcast_mac[ETH_ALEN] = {
1074 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1075 };
1076
1077 return set_bssid(usbdev, broadcast_mac);
1078 }
1079
get_bssid(struct usbnet * usbdev,u8 bssid[ETH_ALEN])1080 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1081 {
1082 int ret, len;
1083
1084 len = ETH_ALEN;
1085 ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1086
1087 if (ret != 0)
1088 memset(bssid, 0, ETH_ALEN);
1089
1090 return ret;
1091 }
1092
get_association_info(struct usbnet * usbdev,struct ndis_80211_assoc_info * info,int len)1093 static int get_association_info(struct usbnet *usbdev,
1094 struct ndis_80211_assoc_info *info, int len)
1095 {
1096 return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1097 info, &len);
1098 }
1099
is_associated(struct usbnet * usbdev)1100 static bool is_associated(struct usbnet *usbdev)
1101 {
1102 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1103 u8 bssid[ETH_ALEN];
1104 int ret;
1105
1106 if (!priv->radio_on)
1107 return false;
1108
1109 ret = get_bssid(usbdev, bssid);
1110
1111 return (ret == 0 && !is_zero_ether_addr(bssid));
1112 }
1113
disassociate(struct usbnet * usbdev,bool reset_ssid)1114 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1115 {
1116 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1117 struct ndis_80211_ssid ssid;
1118 int i, ret = 0;
1119
1120 if (priv->radio_on) {
1121 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1122 if (ret == 0) {
1123 priv->radio_on = false;
1124 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1125 __func__);
1126
1127 if (reset_ssid)
1128 msleep(100);
1129 }
1130 }
1131
1132 /* disassociate causes radio to be turned off; if reset_ssid
1133 * is given, set random ssid to enable radio */
1134 if (reset_ssid) {
1135 /* Set device to infrastructure mode so we don't get ad-hoc
1136 * 'media connect' indications with the random ssid.
1137 */
1138 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1139
1140 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1141 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1142 ssid.essid[0] = 0x1;
1143 ssid.essid[1] = 0xff;
1144 for (i = 2; i < sizeof(ssid.essid); i++)
1145 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1146 ret = set_essid(usbdev, &ssid);
1147 }
1148 return ret;
1149 }
1150
set_auth_mode(struct usbnet * usbdev,u32 wpa_version,enum nl80211_auth_type auth_type,int keymgmt)1151 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1152 enum nl80211_auth_type auth_type, int keymgmt)
1153 {
1154 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155 __le32 tmp;
1156 int auth_mode, ret;
1157
1158 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1159 __func__, wpa_version, auth_type, keymgmt);
1160
1161 if (wpa_version & NL80211_WPA_VERSION_2) {
1162 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1163 auth_mode = NDIS_80211_AUTH_WPA2;
1164 else
1165 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1166 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1167 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1168 auth_mode = NDIS_80211_AUTH_WPA;
1169 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1170 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1171 else
1172 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1173 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1174 auth_mode = NDIS_80211_AUTH_SHARED;
1175 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1176 auth_mode = NDIS_80211_AUTH_OPEN;
1177 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1178 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1179 else
1180 return -ENOTSUPP;
1181
1182 tmp = cpu_to_le32(auth_mode);
1183 ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1184 sizeof(tmp));
1185 if (ret != 0) {
1186 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1187 ret);
1188 return ret;
1189 }
1190
1191 priv->wpa_version = wpa_version;
1192
1193 return 0;
1194 }
1195
set_priv_filter(struct usbnet * usbdev)1196 static int set_priv_filter(struct usbnet *usbdev)
1197 {
1198 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1199 __le32 tmp;
1200
1201 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1202 __func__, priv->wpa_version);
1203
1204 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1205 priv->wpa_version & NL80211_WPA_VERSION_1)
1206 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1207 else
1208 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1209
1210 return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1211 sizeof(tmp));
1212 }
1213
set_encr_mode(struct usbnet * usbdev,int pairwise,int groupwise)1214 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1215 {
1216 __le32 tmp;
1217 int encr_mode, ret;
1218
1219 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1220 __func__, pairwise, groupwise);
1221
1222 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1223 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1224 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1225 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1226 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1227 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1228 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1229 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1230 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1231 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1232 else
1233 encr_mode = NDIS_80211_ENCR_DISABLED;
1234
1235 tmp = cpu_to_le32(encr_mode);
1236 ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1237 sizeof(tmp));
1238 if (ret != 0) {
1239 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1240 ret);
1241 return ret;
1242 }
1243
1244 return 0;
1245 }
1246
set_infra_mode(struct usbnet * usbdev,int mode)1247 static int set_infra_mode(struct usbnet *usbdev, int mode)
1248 {
1249 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1250 __le32 tmp;
1251 int ret;
1252
1253 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1254 __func__, priv->infra_mode);
1255
1256 tmp = cpu_to_le32(mode);
1257 ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1258 sizeof(tmp));
1259 if (ret != 0) {
1260 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1261 ret);
1262 return ret;
1263 }
1264
1265 /* NDIS drivers clear keys when infrastructure mode is
1266 * changed. But Linux tools assume otherwise. So set the
1267 * keys */
1268 restore_keys(usbdev);
1269
1270 priv->infra_mode = mode;
1271 return 0;
1272 }
1273
set_rts_threshold(struct usbnet * usbdev,u32 rts_threshold)1274 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1275 {
1276 __le32 tmp;
1277
1278 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1279
1280 if (rts_threshold < 0 || rts_threshold > 2347)
1281 rts_threshold = 2347;
1282
1283 tmp = cpu_to_le32(rts_threshold);
1284 return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1285 sizeof(tmp));
1286 }
1287
set_frag_threshold(struct usbnet * usbdev,u32 frag_threshold)1288 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1289 {
1290 __le32 tmp;
1291
1292 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1293
1294 if (frag_threshold < 256 || frag_threshold > 2346)
1295 frag_threshold = 2346;
1296
1297 tmp = cpu_to_le32(frag_threshold);
1298 return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1299 sizeof(tmp));
1300 }
1301
set_default_iw_params(struct usbnet * usbdev)1302 static void set_default_iw_params(struct usbnet *usbdev)
1303 {
1304 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1305 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1306 RNDIS_WLAN_KEY_MGMT_NONE);
1307 set_priv_filter(usbdev);
1308 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1309 }
1310
deauthenticate(struct usbnet * usbdev)1311 static int deauthenticate(struct usbnet *usbdev)
1312 {
1313 int ret;
1314
1315 ret = disassociate(usbdev, true);
1316 set_default_iw_params(usbdev);
1317 return ret;
1318 }
1319
set_channel(struct usbnet * usbdev,int channel)1320 static int set_channel(struct usbnet *usbdev, int channel)
1321 {
1322 struct ndis_80211_conf config;
1323 unsigned int dsconfig;
1324 int len, ret;
1325
1326 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1327
1328 /* this OID is valid only when not associated */
1329 if (is_associated(usbdev))
1330 return 0;
1331
1332 dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1333
1334 len = sizeof(config);
1335 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1336 if (ret < 0) {
1337 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1338 __func__);
1339 return ret;
1340 }
1341
1342 config.ds_config = cpu_to_le32(dsconfig);
1343 ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1344 sizeof(config));
1345
1346 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1347
1348 return ret;
1349 }
1350
1351 /* index must be 0 - N, as per NDIS */
add_wep_key(struct usbnet * usbdev,const u8 * key,int key_len,int index)1352 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1353 int index)
1354 {
1355 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1356 struct ndis_80211_wep_key ndis_key;
1357 u32 cipher;
1358 int ret;
1359
1360 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1361 __func__, index, key_len);
1362
1363 if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1364 return -EINVAL;
1365
1366 if (key_len == 5)
1367 cipher = WLAN_CIPHER_SUITE_WEP40;
1368 else
1369 cipher = WLAN_CIPHER_SUITE_WEP104;
1370
1371 memset(&ndis_key, 0, sizeof(ndis_key));
1372
1373 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1374 ndis_key.length = cpu_to_le32(key_len);
1375 ndis_key.index = cpu_to_le32(index);
1376 memcpy(&ndis_key.material, key, key_len);
1377
1378 if (index == priv->encr_tx_key_index) {
1379 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1380 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1381 RNDIS_WLAN_ALG_NONE);
1382 if (ret)
1383 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1384 ret);
1385 }
1386
1387 ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1388 sizeof(ndis_key));
1389 if (ret != 0) {
1390 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1391 index + 1, ret);
1392 return ret;
1393 }
1394
1395 priv->encr_keys[index].len = key_len;
1396 priv->encr_keys[index].cipher = cipher;
1397 memcpy(&priv->encr_keys[index].material, key, key_len);
1398 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1399
1400 return 0;
1401 }
1402
add_wpa_key(struct usbnet * usbdev,const u8 * key,int key_len,int index,const u8 * addr,const u8 * rx_seq,int seq_len,u32 cipher,__le32 flags)1403 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1404 int index, const u8 *addr, const u8 *rx_seq,
1405 int seq_len, u32 cipher, __le32 flags)
1406 {
1407 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1408 struct ndis_80211_key ndis_key;
1409 bool is_addr_ok;
1410 int ret;
1411
1412 if (index < 0 || index >= 4) {
1413 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1414 __func__, index);
1415 return -EINVAL;
1416 }
1417 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1418 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1419 __func__, key_len);
1420 return -EINVAL;
1421 }
1422 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1423 if (!rx_seq || seq_len <= 0) {
1424 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1425 __func__);
1426 return -EINVAL;
1427 }
1428 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1429 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1430 return -EINVAL;
1431 }
1432 }
1433
1434 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1435 !is_broadcast_ether_addr(addr);
1436 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1437 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1438 __func__, addr);
1439 return -EINVAL;
1440 }
1441
1442 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1443 __func__, index,
1444 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1445 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1446 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1447
1448 memset(&ndis_key, 0, sizeof(ndis_key));
1449
1450 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1451 sizeof(ndis_key.material) + key_len);
1452 ndis_key.length = cpu_to_le32(key_len);
1453 ndis_key.index = cpu_to_le32(index) | flags;
1454
1455 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1456 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1457 * different order than NDIS spec, so swap the order here. */
1458 memcpy(ndis_key.material, key, 16);
1459 memcpy(ndis_key.material + 16, key + 24, 8);
1460 memcpy(ndis_key.material + 24, key + 16, 8);
1461 } else
1462 memcpy(ndis_key.material, key, key_len);
1463
1464 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1465 memcpy(ndis_key.rsc, rx_seq, seq_len);
1466
1467 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1468 /* pairwise key */
1469 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1470 } else {
1471 /* group key */
1472 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1473 memset(ndis_key.bssid, 0xff, ETH_ALEN);
1474 else
1475 get_bssid(usbdev, ndis_key.bssid);
1476 }
1477
1478 ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1479 le32_to_cpu(ndis_key.size));
1480 netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1481 __func__, ret);
1482 if (ret != 0)
1483 return ret;
1484
1485 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1486 priv->encr_keys[index].len = key_len;
1487 priv->encr_keys[index].cipher = cipher;
1488 memcpy(&priv->encr_keys[index].material, key, key_len);
1489 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1490 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1491 else
1492 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1493
1494 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1495 priv->encr_tx_key_index = index;
1496
1497 return 0;
1498 }
1499
restore_key(struct usbnet * usbdev,int key_idx)1500 static int restore_key(struct usbnet *usbdev, int key_idx)
1501 {
1502 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1503 struct rndis_wlan_encr_key key;
1504
1505 if (is_wpa_key(priv, key_idx))
1506 return 0;
1507
1508 key = priv->encr_keys[key_idx];
1509
1510 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1511
1512 if (key.len == 0)
1513 return 0;
1514
1515 return add_wep_key(usbdev, key.material, key.len, key_idx);
1516 }
1517
restore_keys(struct usbnet * usbdev)1518 static void restore_keys(struct usbnet *usbdev)
1519 {
1520 int i;
1521
1522 for (i = 0; i < 4; i++)
1523 restore_key(usbdev, i);
1524 }
1525
clear_key(struct rndis_wlan_private * priv,int idx)1526 static void clear_key(struct rndis_wlan_private *priv, int idx)
1527 {
1528 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1529 }
1530
1531 /* remove_key is for both wep and wpa */
remove_key(struct usbnet * usbdev,int index,const u8 * bssid)1532 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1533 {
1534 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1535 struct ndis_80211_remove_key remove_key;
1536 __le32 keyindex;
1537 bool is_wpa;
1538 int ret;
1539
1540 if (priv->encr_keys[index].len == 0)
1541 return 0;
1542
1543 is_wpa = is_wpa_key(priv, index);
1544
1545 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1546 __func__, index, is_wpa ? "wpa" : "wep",
1547 priv->encr_keys[index].len);
1548
1549 clear_key(priv, index);
1550
1551 if (is_wpa) {
1552 remove_key.size = cpu_to_le32(sizeof(remove_key));
1553 remove_key.index = cpu_to_le32(index);
1554 if (bssid) {
1555 /* pairwise key */
1556 if (!is_broadcast_ether_addr(bssid))
1557 remove_key.index |=
1558 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1559 memcpy(remove_key.bssid, bssid,
1560 sizeof(remove_key.bssid));
1561 } else
1562 memset(remove_key.bssid, 0xff,
1563 sizeof(remove_key.bssid));
1564
1565 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1566 sizeof(remove_key));
1567 if (ret != 0)
1568 return ret;
1569 } else {
1570 keyindex = cpu_to_le32(index);
1571 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1572 sizeof(keyindex));
1573 if (ret != 0) {
1574 netdev_warn(usbdev->net,
1575 "removing encryption key %d failed (%08X)\n",
1576 index, ret);
1577 return ret;
1578 }
1579 }
1580
1581 /* if it is transmit key, disable encryption */
1582 if (index == priv->encr_tx_key_index)
1583 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1584
1585 return 0;
1586 }
1587
set_multicast_list(struct usbnet * usbdev)1588 static void set_multicast_list(struct usbnet *usbdev)
1589 {
1590 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1591 struct netdev_hw_addr *ha;
1592 __le32 filter, basefilter;
1593 int ret;
1594 char *mc_addrs = NULL;
1595 int mc_count;
1596
1597 basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1598 RNDIS_PACKET_TYPE_BROADCAST;
1599
1600 if (usbdev->net->flags & IFF_PROMISC) {
1601 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1602 RNDIS_PACKET_TYPE_ALL_LOCAL;
1603 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1604 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1605 }
1606
1607 if (filter != basefilter)
1608 goto set_filter;
1609
1610 /*
1611 * mc_list should be accessed holding the lock, so copy addresses to
1612 * local buffer first.
1613 */
1614 netif_addr_lock_bh(usbdev->net);
1615 mc_count = netdev_mc_count(usbdev->net);
1616 if (mc_count > priv->multicast_size) {
1617 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1618 } else if (mc_count) {
1619 int i = 0;
1620
1621 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1622 if (!mc_addrs) {
1623 netdev_warn(usbdev->net,
1624 "couldn't alloc %d bytes of memory\n",
1625 mc_count * ETH_ALEN);
1626 netif_addr_unlock_bh(usbdev->net);
1627 return;
1628 }
1629
1630 netdev_for_each_mc_addr(ha, usbdev->net)
1631 memcpy(mc_addrs + i++ * ETH_ALEN,
1632 ha->addr, ETH_ALEN);
1633 }
1634 netif_addr_unlock_bh(usbdev->net);
1635
1636 if (filter != basefilter)
1637 goto set_filter;
1638
1639 if (mc_count) {
1640 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1641 mc_count * ETH_ALEN);
1642 kfree(mc_addrs);
1643 if (ret == 0)
1644 filter |= RNDIS_PACKET_TYPE_MULTICAST;
1645 else
1646 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1647
1648 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1649 mc_count, priv->multicast_size, ret);
1650 }
1651
1652 set_filter:
1653 ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1654 sizeof(filter));
1655 if (ret < 0) {
1656 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1657 le32_to_cpu(filter));
1658 }
1659
1660 netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1661 le32_to_cpu(filter), ret);
1662 }
1663
1664 #ifdef DEBUG
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1665 static void debug_print_pmkids(struct usbnet *usbdev,
1666 struct ndis_80211_pmkid *pmkids,
1667 const char *func_str)
1668 {
1669 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1670 int i, len, count, max_pmkids, entry_len;
1671
1672 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1673 len = le32_to_cpu(pmkids->length);
1674 count = le32_to_cpu(pmkids->bssid_info_count);
1675
1676 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1677
1678 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1679 "%d)\n", func_str, count, len, entry_len);
1680
1681 if (count > max_pmkids)
1682 count = max_pmkids;
1683
1684 for (i = 0; i < count; i++) {
1685 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1686
1687 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1688 "pmkid: %08X:%08X:%08X:%08X\n",
1689 func_str, pmkids->bssid_info[i].bssid,
1690 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1691 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1692 }
1693 }
1694 #else
debug_print_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,const char * func_str)1695 static void debug_print_pmkids(struct usbnet *usbdev,
1696 struct ndis_80211_pmkid *pmkids,
1697 const char *func_str)
1698 {
1699 return;
1700 }
1701 #endif
1702
get_device_pmkids(struct usbnet * usbdev)1703 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1704 {
1705 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1706 struct ndis_80211_pmkid *pmkids;
1707 int len, ret, max_pmkids;
1708
1709 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1710 len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1711
1712 pmkids = kzalloc(len, GFP_KERNEL);
1713 if (!pmkids)
1714 return ERR_PTR(-ENOMEM);
1715
1716 pmkids->length = cpu_to_le32(len);
1717 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1718
1719 ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1720 if (ret < 0) {
1721 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1722 " -> %d\n", __func__, len, max_pmkids, ret);
1723
1724 kfree(pmkids);
1725 return ERR_PTR(ret);
1726 }
1727
1728 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1729 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1730
1731 debug_print_pmkids(usbdev, pmkids, __func__);
1732
1733 return pmkids;
1734 }
1735
set_device_pmkids(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids)1736 static int set_device_pmkids(struct usbnet *usbdev,
1737 struct ndis_80211_pmkid *pmkids)
1738 {
1739 int ret, len, num_pmkids;
1740
1741 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1742 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1743 pmkids->length = cpu_to_le32(len);
1744
1745 debug_print_pmkids(usbdev, pmkids, __func__);
1746
1747 ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1748 le32_to_cpu(pmkids->length));
1749 if (ret < 0) {
1750 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1751 "\n", __func__, len, num_pmkids, ret);
1752 }
1753
1754 kfree(pmkids);
1755 return ret;
1756 }
1757
remove_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1758 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1759 struct ndis_80211_pmkid *pmkids,
1760 struct cfg80211_pmksa *pmksa,
1761 int max_pmkids)
1762 {
1763 int i, len, count, newlen, err;
1764
1765 len = le32_to_cpu(pmkids->length);
1766 count = le32_to_cpu(pmkids->bssid_info_count);
1767
1768 if (count > max_pmkids)
1769 count = max_pmkids;
1770
1771 for (i = 0; i < count; i++)
1772 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1773 pmksa->bssid))
1774 break;
1775
1776 /* pmkid not found */
1777 if (i == count) {
1778 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1779 __func__, pmksa->bssid);
1780 err = -ENOENT;
1781 goto error;
1782 }
1783
1784 for (; i + 1 < count; i++)
1785 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1786
1787 count--;
1788 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1789
1790 pmkids->length = cpu_to_le32(newlen);
1791 pmkids->bssid_info_count = cpu_to_le32(count);
1792
1793 return pmkids;
1794 error:
1795 kfree(pmkids);
1796 return ERR_PTR(err);
1797 }
1798
update_pmkid(struct usbnet * usbdev,struct ndis_80211_pmkid * pmkids,struct cfg80211_pmksa * pmksa,int max_pmkids)1799 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1800 struct ndis_80211_pmkid *pmkids,
1801 struct cfg80211_pmksa *pmksa,
1802 int max_pmkids)
1803 {
1804 int i, err, len, count, newlen;
1805
1806 len = le32_to_cpu(pmkids->length);
1807 count = le32_to_cpu(pmkids->bssid_info_count);
1808
1809 if (count > max_pmkids)
1810 count = max_pmkids;
1811
1812 /* update with new pmkid */
1813 for (i = 0; i < count; i++) {
1814 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1815 pmksa->bssid))
1816 continue;
1817
1818 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1819 WLAN_PMKID_LEN);
1820
1821 return pmkids;
1822 }
1823
1824 /* out of space, return error */
1825 if (i == max_pmkids) {
1826 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1827 err = -ENOSPC;
1828 goto error;
1829 }
1830
1831 /* add new pmkid */
1832 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1833
1834 pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1835 if (!pmkids) {
1836 err = -ENOMEM;
1837 goto error;
1838 }
1839
1840 pmkids->length = cpu_to_le32(newlen);
1841 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1842
1843 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1844 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1845
1846 return pmkids;
1847 error:
1848 kfree(pmkids);
1849 return ERR_PTR(err);
1850 }
1851
1852 /*
1853 * cfg80211 ops
1854 */
rndis_change_virtual_intf(struct wiphy * wiphy,struct net_device * dev,enum nl80211_iftype type,u32 * flags,struct vif_params * params)1855 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1856 struct net_device *dev,
1857 enum nl80211_iftype type, u32 *flags,
1858 struct vif_params *params)
1859 {
1860 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1861 struct usbnet *usbdev = priv->usbdev;
1862 int mode;
1863
1864 switch (type) {
1865 case NL80211_IFTYPE_ADHOC:
1866 mode = NDIS_80211_INFRA_ADHOC;
1867 break;
1868 case NL80211_IFTYPE_STATION:
1869 mode = NDIS_80211_INFRA_INFRA;
1870 break;
1871 default:
1872 return -EINVAL;
1873 }
1874
1875 priv->wdev.iftype = type;
1876
1877 return set_infra_mode(usbdev, mode);
1878 }
1879
rndis_set_wiphy_params(struct wiphy * wiphy,u32 changed)1880 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1881 {
1882 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1883 struct usbnet *usbdev = priv->usbdev;
1884 int err;
1885
1886 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1887 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1888 if (err < 0)
1889 return err;
1890 }
1891
1892 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1893 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1894 if (err < 0)
1895 return err;
1896 }
1897
1898 return 0;
1899 }
1900
rndis_set_tx_power(struct wiphy * wiphy,enum nl80211_tx_power_setting type,int mbm)1901 static int rndis_set_tx_power(struct wiphy *wiphy,
1902 enum nl80211_tx_power_setting type,
1903 int mbm)
1904 {
1905 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1906 struct usbnet *usbdev = priv->usbdev;
1907
1908 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1909 __func__, type, mbm);
1910
1911 if (mbm < 0 || (mbm % 100))
1912 return -ENOTSUPP;
1913
1914 /* Device doesn't support changing txpower after initialization, only
1915 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1916 * currently used.
1917 */
1918 if (type == NL80211_TX_POWER_AUTOMATIC ||
1919 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1920 if (!priv->radio_on)
1921 disassociate(usbdev, true); /* turn on radio */
1922
1923 return 0;
1924 }
1925
1926 return -ENOTSUPP;
1927 }
1928
rndis_get_tx_power(struct wiphy * wiphy,int * dbm)1929 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1930 {
1931 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1932 struct usbnet *usbdev = priv->usbdev;
1933
1934 *dbm = get_bcm4320_power_dbm(priv);
1935
1936 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1937
1938 return 0;
1939 }
1940
1941 #define SCAN_DELAY_JIFFIES (6 * HZ)
rndis_scan(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_scan_request * request)1942 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1943 struct cfg80211_scan_request *request)
1944 {
1945 struct usbnet *usbdev = netdev_priv(dev);
1946 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1947 int ret;
1948 int delay = SCAN_DELAY_JIFFIES;
1949
1950 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1951
1952 /* Get current bssid list from device before new scan, as new scan
1953 * clears internal bssid list.
1954 */
1955 rndis_check_bssid_list(usbdev, NULL, NULL);
1956
1957 if (!request)
1958 return -EINVAL;
1959
1960 if (priv->scan_request && priv->scan_request != request)
1961 return -EBUSY;
1962
1963 priv->scan_request = request;
1964
1965 ret = rndis_start_bssid_list_scan(usbdev);
1966 if (ret == 0) {
1967 if (priv->device_type == RNDIS_BCM4320A)
1968 delay = HZ;
1969
1970 /* Wait before retrieving scan results from device */
1971 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1972 }
1973
1974 return ret;
1975 }
1976
rndis_bss_info_update(struct usbnet * usbdev,struct ndis_80211_bssid_ex * bssid)1977 static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1978 struct ndis_80211_bssid_ex *bssid)
1979 {
1980 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1981 struct ieee80211_channel *channel;
1982 s32 signal;
1983 u64 timestamp;
1984 u16 capability;
1985 u16 beacon_interval;
1986 struct ndis_80211_fixed_ies *fixed;
1987 int ie_len, bssid_len;
1988 u8 *ie;
1989
1990 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1991 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1992
1993 /* parse bssid structure */
1994 bssid_len = le32_to_cpu(bssid->length);
1995
1996 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1997 sizeof(struct ndis_80211_fixed_ies))
1998 return NULL;
1999
2000 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2001
2002 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2003 ie_len = min(bssid_len - (int)sizeof(*bssid),
2004 (int)le32_to_cpu(bssid->ie_length));
2005 ie_len -= sizeof(struct ndis_80211_fixed_ies);
2006 if (ie_len < 0)
2007 return NULL;
2008
2009 /* extract data for cfg80211_inform_bss */
2010 channel = ieee80211_get_channel(priv->wdev.wiphy,
2011 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2012 if (!channel)
2013 return NULL;
2014
2015 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2016 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2017 capability = le16_to_cpu(fixed->capabilities);
2018 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2019
2020 return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2021 timestamp, capability, beacon_interval, ie, ie_len, signal,
2022 GFP_KERNEL);
2023 }
2024
next_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int * bssid_len,void * buf,int len)2025 static struct ndis_80211_bssid_ex *next_bssid_list_item(
2026 struct ndis_80211_bssid_ex *bssid,
2027 int *bssid_len, void *buf, int len)
2028 {
2029 void *buf_end, *bssid_end;
2030
2031 buf_end = (char *)buf + len;
2032 bssid_end = (char *)bssid + *bssid_len;
2033
2034 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2035 *bssid_len = 0;
2036 return NULL;
2037 } else {
2038 bssid = (void *)((char *)bssid + *bssid_len);
2039 *bssid_len = le32_to_cpu(bssid->length);
2040 return bssid;
2041 }
2042 }
2043
check_bssid_list_item(struct ndis_80211_bssid_ex * bssid,int bssid_len,void * buf,int len)2044 static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2045 int bssid_len, void *buf, int len)
2046 {
2047 void *buf_end, *bssid_end;
2048
2049 if (!bssid || bssid_len <= 0 || bssid_len > len)
2050 return false;
2051
2052 buf_end = (char *)buf + len;
2053 bssid_end = (char *)bssid + bssid_len;
2054
2055 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2056 }
2057
rndis_check_bssid_list(struct usbnet * usbdev,u8 * match_bssid,bool * matched)2058 static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2059 bool *matched)
2060 {
2061 void *buf = NULL;
2062 struct ndis_80211_bssid_list_ex *bssid_list;
2063 struct ndis_80211_bssid_ex *bssid;
2064 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2065
2066 netdev_dbg(usbdev->net, "%s()\n", __func__);
2067
2068 len = CONTROL_BUFFER_SIZE;
2069 resize_buf:
2070 buf = kzalloc(len, GFP_KERNEL);
2071 if (!buf) {
2072 ret = -ENOMEM;
2073 goto out;
2074 }
2075
2076 /* BSSID-list might have got bigger last time we checked, keep
2077 * resizing until it won't get any bigger.
2078 */
2079 new_len = len;
2080 ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2081 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2082 goto out;
2083
2084 if (new_len > len) {
2085 len = new_len;
2086 kfree(buf);
2087 goto resize_buf;
2088 }
2089
2090 len = new_len;
2091
2092 bssid_list = buf;
2093 count = le32_to_cpu(bssid_list->num_items);
2094 real_count = 0;
2095 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2096
2097 bssid_len = 0;
2098 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2099
2100 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2101 * received 'num_items' and walking through full bssid buffer instead.
2102 */
2103 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2104 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2105 matched) {
2106 if (compare_ether_addr(bssid->mac, match_bssid))
2107 *matched = true;
2108 }
2109
2110 real_count++;
2111 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2112 }
2113
2114 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2115 " %d\n", __func__, count, real_count);
2116
2117 out:
2118 kfree(buf);
2119 return ret;
2120 }
2121
rndis_get_scan_results(struct work_struct * work)2122 static void rndis_get_scan_results(struct work_struct *work)
2123 {
2124 struct rndis_wlan_private *priv =
2125 container_of(work, struct rndis_wlan_private, scan_work.work);
2126 struct usbnet *usbdev = priv->usbdev;
2127 int ret;
2128
2129 netdev_dbg(usbdev->net, "get_scan_results\n");
2130
2131 if (!priv->scan_request)
2132 return;
2133
2134 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2135
2136 cfg80211_scan_done(priv->scan_request, ret < 0);
2137
2138 priv->scan_request = NULL;
2139 }
2140
rndis_connect(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_connect_params * sme)2141 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2142 struct cfg80211_connect_params *sme)
2143 {
2144 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2145 struct usbnet *usbdev = priv->usbdev;
2146 struct ieee80211_channel *channel = sme->channel;
2147 struct ndis_80211_ssid ssid;
2148 int pairwise = RNDIS_WLAN_ALG_NONE;
2149 int groupwise = RNDIS_WLAN_ALG_NONE;
2150 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2151 int length, i, ret, chan = -1;
2152
2153 if (channel)
2154 chan = ieee80211_frequency_to_channel(channel->center_freq);
2155
2156 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2157 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2158 pairwise |=
2159 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2160
2161 if (sme->crypto.n_ciphers_pairwise > 0 &&
2162 pairwise == RNDIS_WLAN_ALG_NONE) {
2163 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2164 return -ENOTSUPP;
2165 }
2166
2167 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2168 keymgmt |=
2169 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2170
2171 if (sme->crypto.n_akm_suites > 0 &&
2172 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2173 netdev_err(usbdev->net, "Invalid keymgmt\n");
2174 return -ENOTSUPP;
2175 }
2176
2177 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2178 sme->ssid, sme->bssid, chan,
2179 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2180 groupwise, pairwise, keymgmt);
2181
2182 if (is_associated(usbdev))
2183 disassociate(usbdev, false);
2184
2185 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2186 if (ret < 0) {
2187 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2188 ret);
2189 goto err_turn_radio_on;
2190 }
2191
2192 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2193 keymgmt);
2194 if (ret < 0) {
2195 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2196 ret);
2197 goto err_turn_radio_on;
2198 }
2199
2200 set_priv_filter(usbdev);
2201
2202 ret = set_encr_mode(usbdev, pairwise, groupwise);
2203 if (ret < 0) {
2204 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2205 ret);
2206 goto err_turn_radio_on;
2207 }
2208
2209 if (channel) {
2210 ret = set_channel(usbdev, chan);
2211 if (ret < 0) {
2212 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2213 ret);
2214 goto err_turn_radio_on;
2215 }
2216 }
2217
2218 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2219 priv->encr_tx_key_index = sme->key_idx;
2220 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2221 if (ret < 0) {
2222 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2223 ret, sme->key_len, sme->key_idx);
2224 goto err_turn_radio_on;
2225 }
2226 }
2227
2228 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2229 !is_broadcast_ether_addr(sme->bssid)) {
2230 ret = set_bssid(usbdev, sme->bssid);
2231 if (ret < 0) {
2232 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2233 ret);
2234 goto err_turn_radio_on;
2235 }
2236 } else
2237 clear_bssid(usbdev);
2238
2239 length = sme->ssid_len;
2240 if (length > NDIS_802_11_LENGTH_SSID)
2241 length = NDIS_802_11_LENGTH_SSID;
2242
2243 memset(&ssid, 0, sizeof(ssid));
2244 ssid.length = cpu_to_le32(length);
2245 memcpy(ssid.essid, sme->ssid, length);
2246
2247 /* Pause and purge rx queue, so we don't pass packets before
2248 * 'media connect'-indication.
2249 */
2250 usbnet_pause_rx(usbdev);
2251 usbnet_purge_paused_rxq(usbdev);
2252
2253 ret = set_essid(usbdev, &ssid);
2254 if (ret < 0)
2255 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2256 return ret;
2257
2258 err_turn_radio_on:
2259 disassociate(usbdev, true);
2260
2261 return ret;
2262 }
2263
rndis_disconnect(struct wiphy * wiphy,struct net_device * dev,u16 reason_code)2264 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2265 u16 reason_code)
2266 {
2267 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2268 struct usbnet *usbdev = priv->usbdev;
2269
2270 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2271
2272 priv->connected = false;
2273 memset(priv->bssid, 0, ETH_ALEN);
2274
2275 return deauthenticate(usbdev);
2276 }
2277
rndis_join_ibss(struct wiphy * wiphy,struct net_device * dev,struct cfg80211_ibss_params * params)2278 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2279 struct cfg80211_ibss_params *params)
2280 {
2281 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2282 struct usbnet *usbdev = priv->usbdev;
2283 struct ieee80211_channel *channel = params->channel;
2284 struct ndis_80211_ssid ssid;
2285 enum nl80211_auth_type auth_type;
2286 int ret, alg, length, chan = -1;
2287
2288 if (channel)
2289 chan = ieee80211_frequency_to_channel(channel->center_freq);
2290
2291 /* TODO: How to handle ad-hoc encryption?
2292 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2293 * pre-shared for encryption (open/shared/wpa), is key set before
2294 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2295 */
2296 if (params->privacy) {
2297 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2298 alg = RNDIS_WLAN_ALG_WEP;
2299 } else {
2300 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2301 alg = RNDIS_WLAN_ALG_NONE;
2302 }
2303
2304 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2305 params->ssid, params->bssid, chan, params->privacy);
2306
2307 if (is_associated(usbdev))
2308 disassociate(usbdev, false);
2309
2310 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2311 if (ret < 0) {
2312 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2313 ret);
2314 goto err_turn_radio_on;
2315 }
2316
2317 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2318 if (ret < 0) {
2319 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2320 ret);
2321 goto err_turn_radio_on;
2322 }
2323
2324 set_priv_filter(usbdev);
2325
2326 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2327 if (ret < 0) {
2328 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2329 ret);
2330 goto err_turn_radio_on;
2331 }
2332
2333 if (channel) {
2334 ret = set_channel(usbdev, chan);
2335 if (ret < 0) {
2336 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2337 ret);
2338 goto err_turn_radio_on;
2339 }
2340 }
2341
2342 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2343 !is_broadcast_ether_addr(params->bssid)) {
2344 ret = set_bssid(usbdev, params->bssid);
2345 if (ret < 0) {
2346 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2347 ret);
2348 goto err_turn_radio_on;
2349 }
2350 } else
2351 clear_bssid(usbdev);
2352
2353 length = params->ssid_len;
2354 if (length > NDIS_802_11_LENGTH_SSID)
2355 length = NDIS_802_11_LENGTH_SSID;
2356
2357 memset(&ssid, 0, sizeof(ssid));
2358 ssid.length = cpu_to_le32(length);
2359 memcpy(ssid.essid, params->ssid, length);
2360
2361 /* Don't need to pause rx queue for ad-hoc. */
2362 usbnet_purge_paused_rxq(usbdev);
2363 usbnet_resume_rx(usbdev);
2364
2365 ret = set_essid(usbdev, &ssid);
2366 if (ret < 0)
2367 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2368 ret);
2369 return ret;
2370
2371 err_turn_radio_on:
2372 disassociate(usbdev, true);
2373
2374 return ret;
2375 }
2376
rndis_leave_ibss(struct wiphy * wiphy,struct net_device * dev)2377 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2378 {
2379 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2380 struct usbnet *usbdev = priv->usbdev;
2381
2382 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2383
2384 priv->connected = false;
2385 memset(priv->bssid, 0, ETH_ALEN);
2386
2387 return deauthenticate(usbdev);
2388 }
2389
rndis_set_channel(struct wiphy * wiphy,struct net_device * netdev,struct ieee80211_channel * chan,enum nl80211_channel_type channel_type)2390 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2391 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2392 {
2393 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2394 struct usbnet *usbdev = priv->usbdev;
2395
2396 return set_channel(usbdev,
2397 ieee80211_frequency_to_channel(chan->center_freq));
2398 }
2399
rndis_add_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr,struct key_params * params)2400 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2401 u8 key_index, bool pairwise, const u8 *mac_addr,
2402 struct key_params *params)
2403 {
2404 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2405 struct usbnet *usbdev = priv->usbdev;
2406 __le32 flags;
2407
2408 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2409 __func__, key_index, mac_addr, params->cipher);
2410
2411 switch (params->cipher) {
2412 case WLAN_CIPHER_SUITE_WEP40:
2413 case WLAN_CIPHER_SUITE_WEP104:
2414 return add_wep_key(usbdev, params->key, params->key_len,
2415 key_index);
2416 case WLAN_CIPHER_SUITE_TKIP:
2417 case WLAN_CIPHER_SUITE_CCMP:
2418 flags = 0;
2419
2420 if (params->seq && params->seq_len > 0)
2421 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2422 if (mac_addr)
2423 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2424 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2425
2426 return add_wpa_key(usbdev, params->key, params->key_len,
2427 key_index, mac_addr, params->seq,
2428 params->seq_len, params->cipher, flags);
2429 default:
2430 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2431 __func__, params->cipher);
2432 return -ENOTSUPP;
2433 }
2434 }
2435
rndis_del_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool pairwise,const u8 * mac_addr)2436 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2437 u8 key_index, bool pairwise, const u8 *mac_addr)
2438 {
2439 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2440 struct usbnet *usbdev = priv->usbdev;
2441
2442 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2443
2444 return remove_key(usbdev, key_index, mac_addr);
2445 }
2446
rndis_set_default_key(struct wiphy * wiphy,struct net_device * netdev,u8 key_index,bool unicast,bool multicast)2447 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2448 u8 key_index, bool unicast, bool multicast)
2449 {
2450 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2451 struct usbnet *usbdev = priv->usbdev;
2452 struct rndis_wlan_encr_key key;
2453
2454 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2455
2456 priv->encr_tx_key_index = key_index;
2457
2458 if (is_wpa_key(priv, key_index))
2459 return 0;
2460
2461 key = priv->encr_keys[key_index];
2462
2463 return add_wep_key(usbdev, key.material, key.len, key_index);
2464 }
2465
rndis_fill_station_info(struct usbnet * usbdev,struct station_info * sinfo)2466 static void rndis_fill_station_info(struct usbnet *usbdev,
2467 struct station_info *sinfo)
2468 {
2469 __le32 linkspeed, rssi;
2470 int ret, len;
2471
2472 memset(sinfo, 0, sizeof(*sinfo));
2473
2474 len = sizeof(linkspeed);
2475 ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2476 if (ret == 0) {
2477 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2478 sinfo->filled |= STATION_INFO_TX_BITRATE;
2479 }
2480
2481 len = sizeof(rssi);
2482 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2483 if (ret == 0) {
2484 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2485 sinfo->filled |= STATION_INFO_SIGNAL;
2486 }
2487 }
2488
rndis_get_station(struct wiphy * wiphy,struct net_device * dev,u8 * mac,struct station_info * sinfo)2489 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2490 u8 *mac, struct station_info *sinfo)
2491 {
2492 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2493 struct usbnet *usbdev = priv->usbdev;
2494
2495 if (compare_ether_addr(priv->bssid, mac))
2496 return -ENOENT;
2497
2498 rndis_fill_station_info(usbdev, sinfo);
2499
2500 return 0;
2501 }
2502
rndis_dump_station(struct wiphy * wiphy,struct net_device * dev,int idx,u8 * mac,struct station_info * sinfo)2503 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2504 int idx, u8 *mac, struct station_info *sinfo)
2505 {
2506 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2507 struct usbnet *usbdev = priv->usbdev;
2508
2509 if (idx != 0)
2510 return -ENOENT;
2511
2512 memcpy(mac, priv->bssid, ETH_ALEN);
2513
2514 rndis_fill_station_info(usbdev, sinfo);
2515
2516 return 0;
2517 }
2518
rndis_set_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2519 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2520 struct cfg80211_pmksa *pmksa)
2521 {
2522 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2523 struct usbnet *usbdev = priv->usbdev;
2524 struct ndis_80211_pmkid *pmkids;
2525 u32 *tmp = (u32 *)pmksa->pmkid;
2526
2527 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2528 pmksa->bssid,
2529 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2530 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2531
2532 pmkids = get_device_pmkids(usbdev);
2533 if (IS_ERR(pmkids)) {
2534 /* couldn't read PMKID cache from device */
2535 return PTR_ERR(pmkids);
2536 }
2537
2538 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2539 if (IS_ERR(pmkids)) {
2540 /* not found, list full, etc */
2541 return PTR_ERR(pmkids);
2542 }
2543
2544 return set_device_pmkids(usbdev, pmkids);
2545 }
2546
rndis_del_pmksa(struct wiphy * wiphy,struct net_device * netdev,struct cfg80211_pmksa * pmksa)2547 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2548 struct cfg80211_pmksa *pmksa)
2549 {
2550 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2551 struct usbnet *usbdev = priv->usbdev;
2552 struct ndis_80211_pmkid *pmkids;
2553 u32 *tmp = (u32 *)pmksa->pmkid;
2554
2555 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2556 pmksa->bssid,
2557 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2558 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2559
2560 pmkids = get_device_pmkids(usbdev);
2561 if (IS_ERR(pmkids)) {
2562 /* Couldn't read PMKID cache from device */
2563 return PTR_ERR(pmkids);
2564 }
2565
2566 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2567 if (IS_ERR(pmkids)) {
2568 /* not found, etc */
2569 return PTR_ERR(pmkids);
2570 }
2571
2572 return set_device_pmkids(usbdev, pmkids);
2573 }
2574
rndis_flush_pmksa(struct wiphy * wiphy,struct net_device * netdev)2575 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2576 {
2577 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2578 struct usbnet *usbdev = priv->usbdev;
2579 struct ndis_80211_pmkid pmkid;
2580
2581 netdev_dbg(usbdev->net, "%s()\n", __func__);
2582
2583 memset(&pmkid, 0, sizeof(pmkid));
2584
2585 pmkid.length = cpu_to_le32(sizeof(pmkid));
2586 pmkid.bssid_info_count = cpu_to_le32(0);
2587
2588 return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2589 }
2590
rndis_set_power_mgmt(struct wiphy * wiphy,struct net_device * dev,bool enabled,int timeout)2591 static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2592 bool enabled, int timeout)
2593 {
2594 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2595 struct usbnet *usbdev = priv->usbdev;
2596 int power_mode;
2597 __le32 mode;
2598 int ret;
2599
2600 if (priv->device_type != RNDIS_BCM4320B)
2601 return -ENOTSUPP;
2602
2603 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2604 enabled ? "enabled" : "disabled",
2605 timeout);
2606
2607 if (enabled)
2608 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2609 else
2610 power_mode = NDIS_80211_POWER_MODE_CAM;
2611
2612 if (power_mode == priv->power_mode)
2613 return 0;
2614
2615 priv->power_mode = power_mode;
2616
2617 mode = cpu_to_le32(power_mode);
2618 ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2619
2620 netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2621 __func__, ret);
2622
2623 return ret;
2624 }
2625
rndis_set_cqm_rssi_config(struct wiphy * wiphy,struct net_device * dev,s32 rssi_thold,u32 rssi_hyst)2626 static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2627 struct net_device *dev,
2628 s32 rssi_thold, u32 rssi_hyst)
2629 {
2630 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2631
2632 priv->cqm_rssi_thold = rssi_thold;
2633 priv->cqm_rssi_hyst = rssi_hyst;
2634 priv->last_cqm_event_rssi = 0;
2635
2636 return 0;
2637 }
2638
rndis_wlan_craft_connected_bss(struct usbnet * usbdev,u8 * bssid,struct ndis_80211_assoc_info * info)2639 static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2640 struct ndis_80211_assoc_info *info)
2641 {
2642 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2643 struct ieee80211_channel *channel;
2644 struct ndis_80211_conf config;
2645 struct ndis_80211_ssid ssid;
2646 s32 signal;
2647 u64 timestamp;
2648 u16 capability;
2649 u16 beacon_interval;
2650 __le32 rssi;
2651 u8 ie_buf[34];
2652 int len, ret, ie_len;
2653
2654 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2655 len = sizeof(rssi);
2656 rssi = 0;
2657 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2658 signal = level_to_qual(le32_to_cpu(rssi));
2659
2660 netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2661 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2662 level_to_qual(le32_to_cpu(rssi)));
2663
2664 /* Get AP capabilities */
2665 if (info) {
2666 capability = le16_to_cpu(info->resp_ie.capa);
2667 } else {
2668 /* Set atleast ESS/IBSS capability */
2669 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2670 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2671 }
2672
2673 /* Get channel and beacon interval */
2674 len = sizeof(config);
2675 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
2676 netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
2677 __func__, ret);
2678 if (ret >= 0) {
2679 beacon_interval = le16_to_cpu(config.beacon_period);
2680 channel = ieee80211_get_channel(priv->wdev.wiphy,
2681 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
2682 if (!channel) {
2683 netdev_warn(usbdev->net, "%s(): could not get channel."
2684 "\n", __func__);
2685 return;
2686 }
2687 } else {
2688 netdev_warn(usbdev->net, "%s(): could not get configuration.\n",
2689 __func__);
2690 return;
2691 }
2692
2693 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2694 len = sizeof(ssid);
2695 memset(&ssid, 0, sizeof(ssid));
2696 ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2697 netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2698 "'%.32s'\n", __func__, ret,
2699 le32_to_cpu(ssid.length), ssid.essid);
2700
2701 if (le32_to_cpu(ssid.length) > 32)
2702 ssid.length = cpu_to_le32(32);
2703
2704 ie_buf[0] = WLAN_EID_SSID;
2705 ie_buf[1] = le32_to_cpu(ssid.length);
2706 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2707
2708 ie_len = le32_to_cpu(ssid.length) + 2;
2709
2710 /* no tsf */
2711 timestamp = 0;
2712
2713 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2714 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2715 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2716 bssid, (u32)timestamp, capability, beacon_interval, ie_len,
2717 ssid.essid, signal);
2718
2719 cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2720 timestamp, capability, beacon_interval, ie_buf, ie_len,
2721 signal, GFP_KERNEL);
2722 }
2723
2724 /*
2725 * workers, indication handlers, device poller
2726 */
rndis_wlan_do_link_up_work(struct usbnet * usbdev)2727 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2728 {
2729 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2730 struct ndis_80211_assoc_info *info = NULL;
2731 u8 bssid[ETH_ALEN];
2732 int resp_ie_len, req_ie_len;
2733 u8 *req_ie, *resp_ie;
2734 int ret, offset;
2735 bool roamed = false;
2736 bool match_bss;
2737
2738 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2739 /* received media connect indication while connected, either
2740 * device reassociated with same AP or roamed to new. */
2741 roamed = true;
2742 }
2743
2744 req_ie_len = 0;
2745 resp_ie_len = 0;
2746 req_ie = NULL;
2747 resp_ie = NULL;
2748
2749 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2750 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2751 if (!info) {
2752 /* No memory? Try resume work later */
2753 set_bit(WORK_LINK_UP, &priv->work_pending);
2754 queue_work(priv->workqueue, &priv->work);
2755 return;
2756 }
2757
2758 /* Get association info IEs from device. */
2759 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2760 if (!ret) {
2761 req_ie_len = le32_to_cpu(info->req_ie_length);
2762 if (req_ie_len > 0) {
2763 offset = le32_to_cpu(info->offset_req_ies);
2764
2765 if (offset > CONTROL_BUFFER_SIZE)
2766 offset = CONTROL_BUFFER_SIZE;
2767
2768 req_ie = (u8 *)info + offset;
2769
2770 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2771 req_ie_len =
2772 CONTROL_BUFFER_SIZE - offset;
2773 }
2774
2775 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2776 if (resp_ie_len > 0) {
2777 offset = le32_to_cpu(info->offset_resp_ies);
2778
2779 if (offset > CONTROL_BUFFER_SIZE)
2780 offset = CONTROL_BUFFER_SIZE;
2781
2782 resp_ie = (u8 *)info + offset;
2783
2784 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2785 resp_ie_len =
2786 CONTROL_BUFFER_SIZE - offset;
2787 }
2788 } else {
2789 /* Since rndis_wlan_craft_connected_bss() might use info
2790 * later and expects info to contain valid data if
2791 * non-null, free info and set NULL here.
2792 */
2793 kfree(info);
2794 info = NULL;
2795 }
2796 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2797 return;
2798
2799 ret = get_bssid(usbdev, bssid);
2800 if (ret < 0)
2801 memset(bssid, 0, sizeof(bssid));
2802
2803 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2804 bssid, roamed ? " roamed" : "");
2805
2806 /* Internal bss list in device should contain at least the currently
2807 * connected bss and we can get it to cfg80211 with
2808 * rndis_check_bssid_list().
2809 *
2810 * NDIS spec says: "If the device is associated, but the associated
2811 * BSSID is not in its BSSID scan list, then the driver must add an
2812 * entry for the BSSID at the end of the data that it returns in
2813 * response to query of OID_802_11_BSSID_LIST."
2814 *
2815 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2816 */
2817 match_bss = false;
2818 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2819
2820 if (!is_zero_ether_addr(bssid) && !match_bss) {
2821 /* Couldn't get bss from device, we need to manually craft bss
2822 * for cfg80211.
2823 */
2824 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2825 }
2826
2827 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2828 if (!roamed)
2829 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2830 req_ie_len, resp_ie,
2831 resp_ie_len, 0, GFP_KERNEL);
2832 else
2833 cfg80211_roamed(usbdev->net, bssid, req_ie, req_ie_len,
2834 resp_ie, resp_ie_len, GFP_KERNEL);
2835 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2836 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2837
2838 if (info != NULL)
2839 kfree(info);
2840
2841 priv->connected = true;
2842 memcpy(priv->bssid, bssid, ETH_ALEN);
2843
2844 usbnet_resume_rx(usbdev);
2845 netif_carrier_on(usbdev->net);
2846 }
2847
rndis_wlan_do_link_down_work(struct usbnet * usbdev)2848 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2849 {
2850 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2851
2852 if (priv->connected) {
2853 priv->connected = false;
2854 memset(priv->bssid, 0, ETH_ALEN);
2855
2856 deauthenticate(usbdev);
2857
2858 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2859 }
2860
2861 netif_carrier_off(usbdev->net);
2862 }
2863
rndis_wlan_worker(struct work_struct * work)2864 static void rndis_wlan_worker(struct work_struct *work)
2865 {
2866 struct rndis_wlan_private *priv =
2867 container_of(work, struct rndis_wlan_private, work);
2868 struct usbnet *usbdev = priv->usbdev;
2869
2870 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2871 rndis_wlan_do_link_up_work(usbdev);
2872
2873 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2874 rndis_wlan_do_link_down_work(usbdev);
2875
2876 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2877 set_multicast_list(usbdev);
2878 }
2879
rndis_wlan_set_multicast_list(struct net_device * dev)2880 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2881 {
2882 struct usbnet *usbdev = netdev_priv(dev);
2883 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2884
2885 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2886 return;
2887
2888 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2889 queue_work(priv->workqueue, &priv->work);
2890 }
2891
rndis_wlan_auth_indication(struct usbnet * usbdev,struct ndis_80211_status_indication * indication,int len)2892 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2893 struct ndis_80211_status_indication *indication,
2894 int len)
2895 {
2896 u8 *buf;
2897 const char *type;
2898 int flags, buflen, key_id;
2899 bool pairwise_error, group_error;
2900 struct ndis_80211_auth_request *auth_req;
2901 enum nl80211_key_type key_type;
2902
2903 /* must have at least one array entry */
2904 if (len < offsetof(struct ndis_80211_status_indication, u) +
2905 sizeof(struct ndis_80211_auth_request)) {
2906 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2907 len);
2908 return;
2909 }
2910
2911 buf = (void *)&indication->u.auth_request[0];
2912 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2913
2914 while (buflen >= sizeof(*auth_req)) {
2915 auth_req = (void *)buf;
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
3000 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
3001 i, le32_to_cpu(cand->flags), cand->bssid);
3002
3003 #if 0
3004 struct iw_pmkid_cand pcand;
3005 union iwreq_data wrqu;
3006
3007 memset(&pcand, 0, sizeof(pcand));
3008 if (le32_to_cpu(cand->flags) & 0x01)
3009 pcand.flags |= IW_PMKID_CAND_PREAUTH;
3010 pcand.index = i;
3011 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
3012
3013 memset(&wrqu, 0, sizeof(wrqu));
3014 wrqu.data.length = sizeof(pcand);
3015 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
3016 (u8 *)&pcand);
3017 #endif
3018 }
3019 }
3020
rndis_wlan_media_specific_indication(struct usbnet * usbdev,struct rndis_indicate * msg,int buflen)3021 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3022 struct rndis_indicate *msg, int buflen)
3023 {
3024 struct ndis_80211_status_indication *indication;
3025 int len, offset;
3026
3027 offset = offsetof(struct rndis_indicate, status) +
3028 le32_to_cpu(msg->offset);
3029 len = le32_to_cpu(msg->length);
3030
3031 if (len < 8) {
3032 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3033 len);
3034 return;
3035 }
3036
3037 if (offset + len > buflen) {
3038 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3039 offset + len, buflen);
3040 return;
3041 }
3042
3043 indication = (void *)((u8 *)msg + offset);
3044
3045 switch (le32_to_cpu(indication->status_type)) {
3046 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3047 netdev_info(usbdev->net, "radio state indication: %i\n",
3048 le32_to_cpu(indication->u.radio_status));
3049 return;
3050
3051 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3052 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3053 le32_to_cpu(indication->u.media_stream_mode));
3054 return;
3055
3056 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3057 rndis_wlan_auth_indication(usbdev, indication, len);
3058 return;
3059
3060 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3061 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3062 return;
3063
3064 default:
3065 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3066 le32_to_cpu(indication->status_type));
3067 }
3068 }
3069
rndis_wlan_indication(struct usbnet * usbdev,void * ind,int buflen)3070 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3071 {
3072 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3073 struct rndis_indicate *msg = ind;
3074
3075 switch (msg->status) {
3076 case RNDIS_STATUS_MEDIA_CONNECT:
3077 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3078 /* OID_802_11_ADD_KEY causes sometimes extra
3079 * "media connect" indications which confuses driver
3080 * and userspace to think that device is
3081 * roaming/reassociating when it isn't.
3082 */
3083 netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3084 return;
3085 }
3086
3087 usbnet_pause_rx(usbdev);
3088
3089 netdev_info(usbdev->net, "media connect\n");
3090
3091 /* queue work to avoid recursive calls into rndis_command */
3092 set_bit(WORK_LINK_UP, &priv->work_pending);
3093 queue_work(priv->workqueue, &priv->work);
3094 break;
3095
3096 case RNDIS_STATUS_MEDIA_DISCONNECT:
3097 netdev_info(usbdev->net, "media disconnect\n");
3098
3099 /* queue work to avoid recursive calls into rndis_command */
3100 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3101 queue_work(priv->workqueue, &priv->work);
3102 break;
3103
3104 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3105 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3106 break;
3107
3108 default:
3109 netdev_info(usbdev->net, "indication: 0x%08x\n",
3110 le32_to_cpu(msg->status));
3111 break;
3112 }
3113 }
3114
rndis_wlan_get_caps(struct usbnet * usbdev,struct wiphy * wiphy)3115 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3116 {
3117 struct {
3118 __le32 num_items;
3119 __le32 items[8];
3120 } networks_supported;
3121 struct ndis_80211_capability *caps;
3122 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3123 int len, retval, i, n;
3124 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3125
3126 /* determine supported modes */
3127 len = sizeof(networks_supported);
3128 retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3129 &networks_supported, &len);
3130 if (retval >= 0) {
3131 n = le32_to_cpu(networks_supported.num_items);
3132 if (n > 8)
3133 n = 8;
3134 for (i = 0; i < n; i++) {
3135 switch (le32_to_cpu(networks_supported.items[i])) {
3136 case NDIS_80211_TYPE_FREQ_HOP:
3137 case NDIS_80211_TYPE_DIRECT_SEQ:
3138 priv->caps |= CAP_MODE_80211B;
3139 break;
3140 case NDIS_80211_TYPE_OFDM_A:
3141 priv->caps |= CAP_MODE_80211A;
3142 break;
3143 case NDIS_80211_TYPE_OFDM_G:
3144 priv->caps |= CAP_MODE_80211G;
3145 break;
3146 }
3147 }
3148 }
3149
3150 /* get device 802.11 capabilities, number of PMKIDs */
3151 caps = (struct ndis_80211_capability *)caps_buf;
3152 len = sizeof(caps_buf);
3153 retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3154 if (retval >= 0) {
3155 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3156 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3157 le32_to_cpu(caps->length),
3158 le32_to_cpu(caps->version),
3159 le32_to_cpu(caps->num_pmkids),
3160 le32_to_cpu(caps->num_auth_encr_pair));
3161 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3162 } else
3163 wiphy->max_num_pmkids = 0;
3164
3165 return retval;
3166 }
3167
rndis_do_cqm(struct usbnet * usbdev,s32 rssi)3168 static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3169 {
3170 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3171 enum nl80211_cqm_rssi_threshold_event event;
3172 int thold, hyst, last_event;
3173
3174 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3175 return;
3176 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3177 return;
3178
3179 last_event = priv->last_cqm_event_rssi;
3180 thold = priv->cqm_rssi_thold;
3181 hyst = priv->cqm_rssi_hyst;
3182
3183 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3184 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3185 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3186 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3187 else
3188 return;
3189
3190 priv->last_cqm_event_rssi = rssi;
3191 cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3192 }
3193
3194 #define DEVICE_POLLER_JIFFIES (HZ)
rndis_device_poller(struct work_struct * work)3195 static void rndis_device_poller(struct work_struct *work)
3196 {
3197 struct rndis_wlan_private *priv =
3198 container_of(work, struct rndis_wlan_private,
3199 dev_poller_work.work);
3200 struct usbnet *usbdev = priv->usbdev;
3201 __le32 rssi, tmp;
3202 int len, ret, j;
3203 int update_jiffies = DEVICE_POLLER_JIFFIES;
3204 void *buf;
3205
3206 /* Only check/do workaround when connected. Calling is_associated()
3207 * also polls device with rndis_command() and catches for media link
3208 * indications.
3209 */
3210 if (!is_associated(usbdev)) {
3211 /* Workaround bad scanning in BCM4320a devices with active
3212 * background scanning when not associated.
3213 */
3214 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3215 !priv->scan_request) {
3216 /* Get previous scan results */
3217 rndis_check_bssid_list(usbdev, NULL, NULL);
3218
3219 /* Initiate new scan */
3220 rndis_start_bssid_list_scan(usbdev);
3221 }
3222
3223 goto end;
3224 }
3225
3226 len = sizeof(rssi);
3227 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3228 if (ret == 0) {
3229 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3230 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3231 }
3232
3233 netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3234 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3235
3236 /* Workaround transfer stalls on poor quality links.
3237 * TODO: find right way to fix these stalls (as stalls do not happen
3238 * with ndiswrapper/windows driver). */
3239 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3240 /* Decrease stats worker interval to catch stalls.
3241 * faster. Faster than 400-500ms causes packet loss,
3242 * Slower doesn't catch stalls fast enough.
3243 */
3244 j = msecs_to_jiffies(priv->param_workaround_interval);
3245 if (j > DEVICE_POLLER_JIFFIES)
3246 j = DEVICE_POLLER_JIFFIES;
3247 else if (j <= 0)
3248 j = 1;
3249 update_jiffies = j;
3250
3251 /* Send scan OID. Use of both OIDs is required to get device
3252 * working.
3253 */
3254 tmp = cpu_to_le32(1);
3255 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3256 sizeof(tmp));
3257
3258 len = CONTROL_BUFFER_SIZE;
3259 buf = kmalloc(len, GFP_KERNEL);
3260 if (!buf)
3261 goto end;
3262
3263 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3264 kfree(buf);
3265 }
3266
3267 end:
3268 if (update_jiffies >= HZ)
3269 update_jiffies = round_jiffies_relative(update_jiffies);
3270 else {
3271 j = round_jiffies_relative(update_jiffies);
3272 if (abs(j - update_jiffies) <= 10)
3273 update_jiffies = j;
3274 }
3275
3276 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3277 update_jiffies);
3278 }
3279
3280 /*
3281 * driver/device initialization
3282 */
rndis_copy_module_params(struct usbnet * usbdev,int device_type)3283 static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3284 {
3285 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3286
3287 priv->device_type = device_type;
3288
3289 priv->param_country[0] = modparam_country[0];
3290 priv->param_country[1] = modparam_country[1];
3291 priv->param_country[2] = 0;
3292 priv->param_frameburst = modparam_frameburst;
3293 priv->param_afterburner = modparam_afterburner;
3294 priv->param_power_save = modparam_power_save;
3295 priv->param_power_output = modparam_power_output;
3296 priv->param_roamtrigger = modparam_roamtrigger;
3297 priv->param_roamdelta = modparam_roamdelta;
3298
3299 priv->param_country[0] = toupper(priv->param_country[0]);
3300 priv->param_country[1] = toupper(priv->param_country[1]);
3301 /* doesn't support EU as country code, use FI instead */
3302 if (!strcmp(priv->param_country, "EU"))
3303 strcpy(priv->param_country, "FI");
3304
3305 if (priv->param_power_save < 0)
3306 priv->param_power_save = 0;
3307 else if (priv->param_power_save > 2)
3308 priv->param_power_save = 2;
3309
3310 if (priv->param_power_output < 0)
3311 priv->param_power_output = 0;
3312 else if (priv->param_power_output > 3)
3313 priv->param_power_output = 3;
3314
3315 if (priv->param_roamtrigger < -80)
3316 priv->param_roamtrigger = -80;
3317 else if (priv->param_roamtrigger > -60)
3318 priv->param_roamtrigger = -60;
3319
3320 if (priv->param_roamdelta < 0)
3321 priv->param_roamdelta = 0;
3322 else if (priv->param_roamdelta > 2)
3323 priv->param_roamdelta = 2;
3324
3325 if (modparam_workaround_interval < 0)
3326 priv->param_workaround_interval = 500;
3327 else
3328 priv->param_workaround_interval = modparam_workaround_interval;
3329 }
3330
unknown_early_init(struct usbnet * usbdev)3331 static int unknown_early_init(struct usbnet *usbdev)
3332 {
3333 /* copy module parameters for unknown so that iwconfig reports txpower
3334 * and workaround parameter is copied to private structure correctly.
3335 */
3336 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3337
3338 /* This is unknown device, so do not try set configuration parameters.
3339 */
3340
3341 return 0;
3342 }
3343
bcm4320a_early_init(struct usbnet * usbdev)3344 static int bcm4320a_early_init(struct usbnet *usbdev)
3345 {
3346 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3347 * and workaround parameter is copied to private structure correctly.
3348 */
3349 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3350
3351 /* bcm4320a doesn't handle configuration parameters well. Try
3352 * set any and you get partially zeroed mac and broken device.
3353 */
3354
3355 return 0;
3356 }
3357
bcm4320b_early_init(struct usbnet * usbdev)3358 static int bcm4320b_early_init(struct usbnet *usbdev)
3359 {
3360 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3361 char buf[8];
3362
3363 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3364
3365 /* Early initialization settings, setting these won't have effect
3366 * if called after generic_rndis_bind().
3367 */
3368
3369 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3370 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3371 priv->param_frameburst ? "1" : "0");
3372 rndis_set_config_parameter_str(usbdev, "Afterburner",
3373 priv->param_afterburner ? "1" : "0");
3374 sprintf(buf, "%d", priv->param_power_save);
3375 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3376 sprintf(buf, "%d", priv->param_power_output);
3377 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3378 sprintf(buf, "%d", priv->param_roamtrigger);
3379 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3380 sprintf(buf, "%d", priv->param_roamdelta);
3381 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3382
3383 return 0;
3384 }
3385
3386 /* same as rndis_netdev_ops but with local multicast handler */
3387 static const struct net_device_ops rndis_wlan_netdev_ops = {
3388 .ndo_open = usbnet_open,
3389 .ndo_stop = usbnet_stop,
3390 .ndo_start_xmit = usbnet_start_xmit,
3391 .ndo_tx_timeout = usbnet_tx_timeout,
3392 .ndo_set_mac_address = eth_mac_addr,
3393 .ndo_validate_addr = eth_validate_addr,
3394 .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
3395 };
3396
rndis_wlan_bind(struct usbnet * usbdev,struct usb_interface * intf)3397 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3398 {
3399 struct wiphy *wiphy;
3400 struct rndis_wlan_private *priv;
3401 int retval, len;
3402 __le32 tmp;
3403
3404 /* allocate wiphy and rndis private data
3405 * NOTE: We only support a single virtual interface, so wiphy
3406 * and wireless_dev are somewhat synonymous for this device.
3407 */
3408 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3409 if (!wiphy)
3410 return -ENOMEM;
3411
3412 priv = wiphy_priv(wiphy);
3413 usbdev->net->ieee80211_ptr = &priv->wdev;
3414 priv->wdev.wiphy = wiphy;
3415 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3416
3417 /* These have to be initialized before calling generic_rndis_bind().
3418 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3419 */
3420 usbdev->driver_priv = priv;
3421 priv->usbdev = usbdev;
3422
3423 mutex_init(&priv->command_lock);
3424
3425 /* because rndis_command() sleeps we need to use workqueue */
3426 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3427 INIT_WORK(&priv->work, rndis_wlan_worker);
3428 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3429 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3430
3431 /* try bind rndis_host */
3432 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3433 if (retval < 0)
3434 goto fail;
3435
3436 /* generic_rndis_bind set packet filter to multicast_all+
3437 * promisc mode which doesn't work well for our devices (device
3438 * picks up rssi to closest station instead of to access point).
3439 *
3440 * rndis_host wants to avoid all OID as much as possible
3441 * so do promisc/multicast handling in rndis_wlan.
3442 */
3443 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3444
3445 tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3446 retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3447 sizeof(tmp));
3448
3449 len = sizeof(tmp);
3450 retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3451 &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[IEEE80211_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 flush_workqueue(priv->workqueue);
3511 destroy_workqueue(priv->workqueue);
3512
3513 wiphy_free(wiphy);
3514 return retval;
3515 }
3516
rndis_wlan_unbind(struct usbnet * usbdev,struct usb_interface * intf)3517 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3518 {
3519 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3520
3521 /* turn radio off */
3522 disassociate(usbdev, false);
3523
3524 cancel_delayed_work_sync(&priv->dev_poller_work);
3525 cancel_delayed_work_sync(&priv->scan_work);
3526 cancel_work_sync(&priv->work);
3527 flush_workqueue(priv->workqueue);
3528 destroy_workqueue(priv->workqueue);
3529
3530 rndis_unbind(usbdev, intf);
3531
3532 wiphy_unregister(priv->wdev.wiphy);
3533 wiphy_free(priv->wdev.wiphy);
3534 }
3535
rndis_wlan_reset(struct usbnet * usbdev)3536 static int rndis_wlan_reset(struct usbnet *usbdev)
3537 {
3538 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3539 int retval;
3540
3541 netdev_dbg(usbdev->net, "%s()\n", __func__);
3542
3543 retval = rndis_reset(usbdev);
3544 if (retval)
3545 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3546
3547 /* rndis_reset cleared multicast list, so restore here.
3548 (set_multicast_list() also turns on current packet filter) */
3549 set_multicast_list(usbdev);
3550
3551 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3552 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3553
3554 return deauthenticate(usbdev);
3555 }
3556
rndis_wlan_stop(struct usbnet * usbdev)3557 static int rndis_wlan_stop(struct usbnet *usbdev)
3558 {
3559 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3560 int retval;
3561 __le32 filter;
3562
3563 netdev_dbg(usbdev->net, "%s()\n", __func__);
3564
3565 retval = disassociate(usbdev, false);
3566
3567 priv->work_pending = 0;
3568 cancel_delayed_work_sync(&priv->dev_poller_work);
3569 cancel_delayed_work_sync(&priv->scan_work);
3570 cancel_work_sync(&priv->work);
3571 flush_workqueue(priv->workqueue);
3572
3573 if (priv->scan_request) {
3574 cfg80211_scan_done(priv->scan_request, true);
3575 priv->scan_request = NULL;
3576 }
3577
3578 /* Set current packet filter zero to block receiving data packets from
3579 device. */
3580 filter = 0;
3581 rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3582 sizeof(filter));
3583
3584 return retval;
3585 }
3586
3587 static const struct driver_info bcm4320b_info = {
3588 .description = "Wireless RNDIS device, BCM4320b based",
3589 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3590 FLAG_AVOID_UNLINK_URBS,
3591 .bind = rndis_wlan_bind,
3592 .unbind = rndis_wlan_unbind,
3593 .status = rndis_status,
3594 .rx_fixup = rndis_rx_fixup,
3595 .tx_fixup = rndis_tx_fixup,
3596 .reset = rndis_wlan_reset,
3597 .stop = rndis_wlan_stop,
3598 .early_init = bcm4320b_early_init,
3599 .indication = rndis_wlan_indication,
3600 };
3601
3602 static const struct driver_info bcm4320a_info = {
3603 .description = "Wireless RNDIS device, BCM4320a based",
3604 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3605 FLAG_AVOID_UNLINK_URBS,
3606 .bind = rndis_wlan_bind,
3607 .unbind = rndis_wlan_unbind,
3608 .status = rndis_status,
3609 .rx_fixup = rndis_rx_fixup,
3610 .tx_fixup = rndis_tx_fixup,
3611 .reset = rndis_wlan_reset,
3612 .stop = rndis_wlan_stop,
3613 .early_init = bcm4320a_early_init,
3614 .indication = rndis_wlan_indication,
3615 };
3616
3617 static const struct driver_info rndis_wlan_info = {
3618 .description = "Wireless RNDIS device",
3619 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3620 FLAG_AVOID_UNLINK_URBS,
3621 .bind = rndis_wlan_bind,
3622 .unbind = rndis_wlan_unbind,
3623 .status = rndis_status,
3624 .rx_fixup = rndis_rx_fixup,
3625 .tx_fixup = rndis_tx_fixup,
3626 .reset = rndis_wlan_reset,
3627 .stop = rndis_wlan_stop,
3628 .early_init = unknown_early_init,
3629 .indication = rndis_wlan_indication,
3630 };
3631
3632 /*-------------------------------------------------------------------------*/
3633
3634 static const struct usb_device_id products [] = {
3635 #define RNDIS_MASTER_INTERFACE \
3636 .bInterfaceClass = USB_CLASS_COMM, \
3637 .bInterfaceSubClass = 2 /* ACM */, \
3638 .bInterfaceProtocol = 0x0ff
3639
3640 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3641 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3642 */
3643 {
3644 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3645 | USB_DEVICE_ID_MATCH_DEVICE,
3646 .idVendor = 0x0411,
3647 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3648 RNDIS_MASTER_INTERFACE,
3649 .driver_info = (unsigned long) &bcm4320b_info,
3650 }, {
3651 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3652 | USB_DEVICE_ID_MATCH_DEVICE,
3653 .idVendor = 0x0baf,
3654 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3655 RNDIS_MASTER_INTERFACE,
3656 .driver_info = (unsigned long) &bcm4320b_info,
3657 }, {
3658 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3659 | USB_DEVICE_ID_MATCH_DEVICE,
3660 .idVendor = 0x050d,
3661 .idProduct = 0x011b, /* Belkin F5D7051 */
3662 RNDIS_MASTER_INTERFACE,
3663 .driver_info = (unsigned long) &bcm4320b_info,
3664 }, {
3665 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3666 | USB_DEVICE_ID_MATCH_DEVICE,
3667 .idVendor = 0x1799, /* Belkin has two vendor ids */
3668 .idProduct = 0x011b, /* Belkin F5D7051 */
3669 RNDIS_MASTER_INTERFACE,
3670 .driver_info = (unsigned long) &bcm4320b_info,
3671 }, {
3672 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3673 | USB_DEVICE_ID_MATCH_DEVICE,
3674 .idVendor = 0x13b1,
3675 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3676 RNDIS_MASTER_INTERFACE,
3677 .driver_info = (unsigned long) &bcm4320b_info,
3678 }, {
3679 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3680 | USB_DEVICE_ID_MATCH_DEVICE,
3681 .idVendor = 0x13b1,
3682 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3683 RNDIS_MASTER_INTERFACE,
3684 .driver_info = (unsigned long) &bcm4320b_info,
3685 }, {
3686 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3687 | USB_DEVICE_ID_MATCH_DEVICE,
3688 .idVendor = 0x0b05,
3689 .idProduct = 0x1717, /* Asus WL169gE */
3690 RNDIS_MASTER_INTERFACE,
3691 .driver_info = (unsigned long) &bcm4320b_info,
3692 }, {
3693 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3694 | USB_DEVICE_ID_MATCH_DEVICE,
3695 .idVendor = 0x0a5c,
3696 .idProduct = 0xd11b, /* Eminent EM4045 */
3697 RNDIS_MASTER_INTERFACE,
3698 .driver_info = (unsigned long) &bcm4320b_info,
3699 }, {
3700 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3701 | USB_DEVICE_ID_MATCH_DEVICE,
3702 .idVendor = 0x1690,
3703 .idProduct = 0x0715, /* BT Voyager 1055 */
3704 RNDIS_MASTER_INTERFACE,
3705 .driver_info = (unsigned long) &bcm4320b_info,
3706 },
3707 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3708 * parameters available, hardware probably contain older firmware version with
3709 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3710 */
3711 {
3712 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3713 | USB_DEVICE_ID_MATCH_DEVICE,
3714 .idVendor = 0x13b1,
3715 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3716 RNDIS_MASTER_INTERFACE,
3717 .driver_info = (unsigned long) &bcm4320a_info,
3718 }, {
3719 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3720 | USB_DEVICE_ID_MATCH_DEVICE,
3721 .idVendor = 0x0baf,
3722 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3723 RNDIS_MASTER_INTERFACE,
3724 .driver_info = (unsigned long) &bcm4320a_info,
3725 }, {
3726 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3727 | USB_DEVICE_ID_MATCH_DEVICE,
3728 .idVendor = 0x0411,
3729 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3730 RNDIS_MASTER_INTERFACE,
3731 .driver_info = (unsigned long) &bcm4320a_info,
3732 },
3733 /* Generic Wireless RNDIS devices that we don't have exact
3734 * idVendor/idProduct/chip yet.
3735 */
3736 {
3737 /* RNDIS is MSFT's un-official variant of CDC ACM */
3738 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3739 .driver_info = (unsigned long) &rndis_wlan_info,
3740 }, {
3741 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3742 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3743 .driver_info = (unsigned long) &rndis_wlan_info,
3744 },
3745 { }, // END
3746 };
3747 MODULE_DEVICE_TABLE(usb, products);
3748
3749 static struct usb_driver rndis_wlan_driver = {
3750 .name = "rndis_wlan",
3751 .id_table = products,
3752 .probe = usbnet_probe,
3753 .disconnect = usbnet_disconnect,
3754 .suspend = usbnet_suspend,
3755 .resume = usbnet_resume,
3756 };
3757
rndis_wlan_init(void)3758 static int __init rndis_wlan_init(void)
3759 {
3760 return usb_register(&rndis_wlan_driver);
3761 }
3762 module_init(rndis_wlan_init);
3763
rndis_wlan_exit(void)3764 static void __exit rndis_wlan_exit(void)
3765 {
3766 usb_deregister(&rndis_wlan_driver);
3767 }
3768 module_exit(rndis_wlan_exit);
3769
3770 MODULE_AUTHOR("Bjorge Dijkstra");
3771 MODULE_AUTHOR("Jussi Kivilinna");
3772 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3773 MODULE_LICENSE("GPL");
3774
3775