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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wirel...
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / rndis_wlan.c
blob5e7f344b000d57741a8a789a4927cd76fccd773c
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_BSSID_LIST cpu_to_le32(0x0d010217)
133
134
135 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
136 #define WL_NOISE -96 /* typical noise level in dBm */
137 #define WL_SIGMAX -32 /* typical maximum signal level in dBm */
138
139
140 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
141 * based on wireless rndis) has default txpower of 13dBm.
142 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
143 * 100% : 20 mW ~ 13dBm
144 * 75% : 15 mW ~ 12dBm
145 * 50% : 10 mW ~ 10dBm
146 * 25% : 5 mW ~ 7dBm
147 */
148 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
149 #define BCM4320_DEFAULT_TXPOWER_DBM_75 12
150 #define BCM4320_DEFAULT_TXPOWER_DBM_50 10
151 #define BCM4320_DEFAULT_TXPOWER_DBM_25 7
152
153
154 /* codes for "status" field of completion messages */
155 #define RNDIS_STATUS_ADAPTER_NOT_READY cpu_to_le32(0xc0010011)
156 #define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012)
157
158
159 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
160 * slightly modified for datatype endianess, etc
161 */
162 #define NDIS_802_11_LENGTH_SSID 32
163 #define NDIS_802_11_LENGTH_RATES 8
164 #define NDIS_802_11_LENGTH_RATES_EX 16
165
166 enum ndis_80211_net_type {
167 NDIS_80211_TYPE_FREQ_HOP,
168 NDIS_80211_TYPE_DIRECT_SEQ,
169 NDIS_80211_TYPE_OFDM_A,
170 NDIS_80211_TYPE_OFDM_G
171 };
172
173 enum ndis_80211_net_infra {
174 NDIS_80211_INFRA_ADHOC,
175 NDIS_80211_INFRA_INFRA,
176 NDIS_80211_INFRA_AUTO_UNKNOWN
177 };
178
179 enum ndis_80211_auth_mode {
180 NDIS_80211_AUTH_OPEN,
181 NDIS_80211_AUTH_SHARED,
182 NDIS_80211_AUTH_AUTO_SWITCH,
183 NDIS_80211_AUTH_WPA,
184 NDIS_80211_AUTH_WPA_PSK,
185 NDIS_80211_AUTH_WPA_NONE,
186 NDIS_80211_AUTH_WPA2,
187 NDIS_80211_AUTH_WPA2_PSK
188 };
189
190 enum ndis_80211_encr_status {
191 NDIS_80211_ENCR_WEP_ENABLED,
192 NDIS_80211_ENCR_DISABLED,
193 NDIS_80211_ENCR_WEP_KEY_ABSENT,
194 NDIS_80211_ENCR_NOT_SUPPORTED,
195 NDIS_80211_ENCR_TKIP_ENABLED,
196 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
197 NDIS_80211_ENCR_CCMP_ENABLED,
198 NDIS_80211_ENCR_CCMP_KEY_ABSENT
199 };
200
201 enum ndis_80211_priv_filter {
202 NDIS_80211_PRIV_ACCEPT_ALL,
203 NDIS_80211_PRIV_8021X_WEP
204 };
205
206 enum ndis_80211_status_type {
207 NDIS_80211_STATUSTYPE_AUTHENTICATION,
208 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
209 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
210 NDIS_80211_STATUSTYPE_RADIOSTATE,
211 };
212
213 enum ndis_80211_media_stream_mode {
214 NDIS_80211_MEDIA_STREAM_OFF,
215 NDIS_80211_MEDIA_STREAM_ON
216 };
217
218 enum ndis_80211_radio_status {
219 NDIS_80211_RADIO_STATUS_ON,
220 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
221 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
222 };
223
224 enum ndis_80211_addkey_bits {
225 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
226 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
227 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
228 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
229 };
230
231 enum ndis_80211_addwep_bits {
232 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
233 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
234 };
235
236 struct ndis_80211_auth_request {
237 __le32 length;
238 u8 bssid[6];
239 u8 padding[2];
240 __le32 flags;
241 } __packed;
242
243 struct ndis_80211_pmkid_candidate {
244 u8 bssid[6];
245 u8 padding[2];
246 __le32 flags;
247 } __packed;
248
249 struct ndis_80211_pmkid_cand_list {
250 __le32 version;
251 __le32 num_candidates;
252 struct ndis_80211_pmkid_candidate candidate_list[0];
253 } __packed;
254
255 struct ndis_80211_status_indication {
256 __le32 status_type;
257 union {
258 __le32 media_stream_mode;
259 __le32 radio_status;
260 struct ndis_80211_auth_request auth_request[0];
261 struct ndis_80211_pmkid_cand_list cand_list;
262 } u;
263 } __packed;
264
265 struct ndis_80211_ssid {
266 __le32 length;
267 u8 essid[NDIS_802_11_LENGTH_SSID];
268 } __packed;
269
270 struct ndis_80211_conf_freq_hop {
271 __le32 length;
272 __le32 hop_pattern;
273 __le32 hop_set;
274 __le32 dwell_time;
275 } __packed;
276
277 struct ndis_80211_conf {
278 __le32 length;
279 __le32 beacon_period;
280 __le32 atim_window;
281 __le32 ds_config;
282 struct ndis_80211_conf_freq_hop fh_config;
283 } __packed;
284
285 struct ndis_80211_bssid_ex {
286 __le32 length;
287 u8 mac[6];
288 u8 padding[2];
289 struct ndis_80211_ssid ssid;
290 __le32 privacy;
291 __le32 rssi;
292 __le32 net_type;
293 struct ndis_80211_conf config;
294 __le32 net_infra;
295 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
296 __le32 ie_length;
297 u8 ies[0];
298 } __packed;
299
300 struct ndis_80211_bssid_list_ex {
301 __le32 num_items;
302 struct ndis_80211_bssid_ex bssid[0];
303 } __packed;
304
305 struct ndis_80211_fixed_ies {
306 u8 timestamp[8];
307 __le16 beacon_interval;
308 __le16 capabilities;
309 } __packed;
310
311 struct ndis_80211_wep_key {
312 __le32 size;
313 __le32 index;
314 __le32 length;
315 u8 material[32];
316 } __packed;
317
318 struct ndis_80211_key {
319 __le32 size;
320 __le32 index;
321 __le32 length;
322 u8 bssid[6];
323 u8 padding[6];
324 u8 rsc[8];
325 u8 material[32];
326 } __packed;
327
328 struct ndis_80211_remove_key {
329 __le32 size;
330 __le32 index;
331 u8 bssid[6];
332 u8 padding[2];
333 } __packed;
334
335 struct ndis_config_param {
336 __le32 name_offs;
337 __le32 name_length;
338 __le32 type;
339 __le32 value_offs;
340 __le32 value_length;
341 } __packed;
342
343 struct ndis_80211_assoc_info {
344 __le32 length;
345 __le16 req_ies;
346 struct req_ie {
347 __le16 capa;
348 __le16 listen_interval;
349 u8 cur_ap_address[6];
350 } req_ie;
351 __le32 req_ie_length;
352 __le32 offset_req_ies;
353 __le16 resp_ies;
354 struct resp_ie {
355 __le16 capa;
356 __le16 status_code;
357 __le16 assoc_id;
358 } resp_ie;
359 __le32 resp_ie_length;
360 __le32 offset_resp_ies;
361 } __packed;
362
363 struct ndis_80211_auth_encr_pair {
364 __le32 auth_mode;
365 __le32 encr_mode;
366 } __packed;
367
368 struct ndis_80211_capability {
369 __le32 length;
370 __le32 version;
371 __le32 num_pmkids;
372 __le32 num_auth_encr_pair;
373 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
374 } __packed;
375
376 struct ndis_80211_bssid_info {
377 u8 bssid[6];
378 u8 pmkid[16];
379 };
380
381 struct ndis_80211_pmkid {
382 __le32 length;
383 __le32 bssid_info_count;
384 struct ndis_80211_bssid_info bssid_info[0];
385 };
386
387 /*
388 * private data
389 */
390 #define NET_TYPE_11FB 0
391
392 #define CAP_MODE_80211A 1
393 #define CAP_MODE_80211B 2
394 #define CAP_MODE_80211G 4
395 #define CAP_MODE_MASK 7
396
397 #define WORK_LINK_UP (1<<0)
398 #define WORK_LINK_DOWN (1<<1)
399 #define WORK_SET_MULTICAST_LIST (1<<2)
400
401 #define RNDIS_WLAN_ALG_NONE 0
402 #define RNDIS_WLAN_ALG_WEP (1<<0)
403 #define RNDIS_WLAN_ALG_TKIP (1<<1)
404 #define RNDIS_WLAN_ALG_CCMP (1<<2)
405
406 #define RNDIS_WLAN_KEY_MGMT_NONE 0
407 #define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
408 #define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
409
410 #define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
411
412 static const struct ieee80211_channel rndis_channels[] = {
413 { .center_freq = 2412 },
414 { .center_freq = 2417 },
415 { .center_freq = 2422 },
416 { .center_freq = 2427 },
417 { .center_freq = 2432 },
418 { .center_freq = 2437 },
419 { .center_freq = 2442 },
420 { .center_freq = 2447 },
421 { .center_freq = 2452 },
422 { .center_freq = 2457 },
423 { .center_freq = 2462 },
424 { .center_freq = 2467 },
425 { .center_freq = 2472 },
426 { .center_freq = 2484 },
427 };
428
429 static const struct ieee80211_rate rndis_rates[] = {
430 { .bitrate = 10 },
431 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
432 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
433 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
434 { .bitrate = 60 },
435 { .bitrate = 90 },
436 { .bitrate = 120 },
437 { .bitrate = 180 },
438 { .bitrate = 240 },
439 { .bitrate = 360 },
440 { .bitrate = 480 },
441 { .bitrate = 540 }
442 };
443
444 static const u32 rndis_cipher_suites[] = {
445 WLAN_CIPHER_SUITE_WEP40,
446 WLAN_CIPHER_SUITE_WEP104,
447 WLAN_CIPHER_SUITE_TKIP,
448 WLAN_CIPHER_SUITE_CCMP,
449 };
450
451 struct rndis_wlan_encr_key {
452 int len;
453 u32 cipher;
454 u8 material[32];
455 u8 bssid[ETH_ALEN];
456 bool pairwise;
457 bool tx_key;
458 };
459
460 /* RNDIS device private data */
461 struct rndis_wlan_private {
462 struct usbnet *usbdev;
463
464 struct wireless_dev wdev;
465
466 struct cfg80211_scan_request *scan_request;
467
468 struct workqueue_struct *workqueue;
469 struct delayed_work dev_poller_work;
470 struct delayed_work scan_work;
471 struct work_struct work;
472 struct mutex command_lock;
473 unsigned long work_pending;
474 int last_qual;
475
476 struct ieee80211_supported_band band;
477 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
478 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
479 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
480
481 int caps;
482 int multicast_size;
483
484 /* module parameters */
485 char param_country[4];
486 int param_frameburst;
487 int param_afterburner;
488 int param_power_save;
489 int param_power_output;
490 int param_roamtrigger;
491 int param_roamdelta;
492 u32 param_workaround_interval;
493
494 /* hardware state */
495 bool radio_on;
496 int infra_mode;
497 bool connected;
498 u8 bssid[ETH_ALEN];
499 struct ndis_80211_ssid essid;
500 __le32 current_command_oid;
501
502 /* encryption stuff */
503 int encr_tx_key_index;
504 struct rndis_wlan_encr_key encr_keys[4];
505 int wpa_version;
506
507 u8 command_buffer[COMMAND_BUFFER_SIZE];
508 };
509
510 /*
511 * cfg80211 ops
512 */
513 static int rndis_change_virtual_intf(struct wiphy *wiphy,
514 struct net_device *dev,
515 enum nl80211_iftype type, u32 *flags,
516 struct vif_params *params);
517
518 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
519 struct cfg80211_scan_request *request);
520
521 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
522
523 static int rndis_set_tx_power(struct wiphy *wiphy, enum tx_power_setting type,
524 int dbm);
525 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
526
527 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
528 struct cfg80211_connect_params *sme);
529
530 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
531 u16 reason_code);
532
533 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
534 struct cfg80211_ibss_params *params);
535
536 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
537
538 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
539 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
540
541 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
542 u8 key_index, const u8 *mac_addr,
543 struct key_params *params);
544
545 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
546 u8 key_index, const u8 *mac_addr);
547
548 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
549 u8 key_index);
550
551 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
552 u8 *mac, struct station_info *sinfo);
553
554 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
555 int idx, u8 *mac, struct station_info *sinfo);
556
557 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
558 struct cfg80211_pmksa *pmksa);
559
560 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
561 struct cfg80211_pmksa *pmksa);
562
563 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
564
565 static struct cfg80211_ops rndis_config_ops = {
566 .change_virtual_intf = rndis_change_virtual_intf,
567 .scan = rndis_scan,
568 .set_wiphy_params = rndis_set_wiphy_params,
569 .set_tx_power = rndis_set_tx_power,
570 .get_tx_power = rndis_get_tx_power,
571 .connect = rndis_connect,
572 .disconnect = rndis_disconnect,
573 .join_ibss = rndis_join_ibss,
574 .leave_ibss = rndis_leave_ibss,
575 .set_channel = rndis_set_channel,
576 .add_key = rndis_add_key,
577 .del_key = rndis_del_key,
578 .set_default_key = rndis_set_default_key,
579 .get_station = rndis_get_station,
580 .dump_station = rndis_dump_station,
581 .set_pmksa = rndis_set_pmksa,
582 .del_pmksa = rndis_del_pmksa,
583 .flush_pmksa = rndis_flush_pmksa,
584 };
585
586 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
587
588
589 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
590 {
591 return (struct rndis_wlan_private *)dev->driver_priv;
592 }
593
594 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
595 {
596 switch (priv->param_power_output) {
597 default:
598 case 3:
599 return BCM4320_DEFAULT_TXPOWER_DBM_100;
600 case 2:
601 return BCM4320_DEFAULT_TXPOWER_DBM_75;
602 case 1:
603 return BCM4320_DEFAULT_TXPOWER_DBM_50;
604 case 0:
605 return BCM4320_DEFAULT_TXPOWER_DBM_25;
606 }
607 }
608
609 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
610 {
611 int cipher = priv->encr_keys[idx].cipher;
612
613 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
614 cipher == WLAN_CIPHER_SUITE_TKIP);
615 }
616
617 static int rndis_cipher_to_alg(u32 cipher)
618 {
619 switch (cipher) {
620 default:
621 return RNDIS_WLAN_ALG_NONE;
622 case WLAN_CIPHER_SUITE_WEP40:
623 case WLAN_CIPHER_SUITE_WEP104:
624 return RNDIS_WLAN_ALG_WEP;
625 case WLAN_CIPHER_SUITE_TKIP:
626 return RNDIS_WLAN_ALG_TKIP;
627 case WLAN_CIPHER_SUITE_CCMP:
628 return RNDIS_WLAN_ALG_CCMP;
629 }
630 }
631
632 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
633 {
634 switch (akm_suite) {
635 default:
636 return RNDIS_WLAN_KEY_MGMT_NONE;
637 case WLAN_AKM_SUITE_8021X:
638 return RNDIS_WLAN_KEY_MGMT_802_1X;
639 case WLAN_AKM_SUITE_PSK:
640 return RNDIS_WLAN_KEY_MGMT_PSK;
641 }
642 }
643
644 #ifdef DEBUG
645 static const char *oid_to_string(__le32 oid)
646 {
647 switch (oid) {
648 #define OID_STR(oid) case oid: return(#oid)
649 /* from rndis_host.h */
650 OID_STR(OID_802_3_PERMANENT_ADDRESS);
651 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
652 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
653 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
654
655 /* from rndis_wlan.c */
656 OID_STR(OID_GEN_LINK_SPEED);
657 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
658
659 OID_STR(OID_GEN_XMIT_OK);
660 OID_STR(OID_GEN_RCV_OK);
661 OID_STR(OID_GEN_XMIT_ERROR);
662 OID_STR(OID_GEN_RCV_ERROR);
663 OID_STR(OID_GEN_RCV_NO_BUFFER);
664
665 OID_STR(OID_802_3_CURRENT_ADDRESS);
666 OID_STR(OID_802_3_MULTICAST_LIST);
667 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
668
669 OID_STR(OID_802_11_BSSID);
670 OID_STR(OID_802_11_SSID);
671 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
672 OID_STR(OID_802_11_ADD_WEP);
673 OID_STR(OID_802_11_REMOVE_WEP);
674 OID_STR(OID_802_11_DISASSOCIATE);
675 OID_STR(OID_802_11_AUTHENTICATION_MODE);
676 OID_STR(OID_802_11_PRIVACY_FILTER);
677 OID_STR(OID_802_11_BSSID_LIST_SCAN);
678 OID_STR(OID_802_11_ENCRYPTION_STATUS);
679 OID_STR(OID_802_11_ADD_KEY);
680 OID_STR(OID_802_11_REMOVE_KEY);
681 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
682 OID_STR(OID_802_11_PMKID);
683 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
684 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
685 OID_STR(OID_802_11_TX_POWER_LEVEL);
686 OID_STR(OID_802_11_RSSI);
687 OID_STR(OID_802_11_RSSI_TRIGGER);
688 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
689 OID_STR(OID_802_11_RTS_THRESHOLD);
690 OID_STR(OID_802_11_SUPPORTED_RATES);
691 OID_STR(OID_802_11_CONFIGURATION);
692 OID_STR(OID_802_11_BSSID_LIST);
693 #undef OID_STR
694 }
695
696 return "?";
697 }
698 #else
699 static const char *oid_to_string(__le32 oid)
700 {
701 return "?";
702 }
703 #endif
704
705 /* translate error code */
706 static int rndis_error_status(__le32 rndis_status)
707 {
708 int ret = -EINVAL;
709 switch (rndis_status) {
710 case RNDIS_STATUS_SUCCESS:
711 ret = 0;
712 break;
713 case RNDIS_STATUS_FAILURE:
714 case RNDIS_STATUS_INVALID_DATA:
715 ret = -EINVAL;
716 break;
717 case RNDIS_STATUS_NOT_SUPPORTED:
718 ret = -EOPNOTSUPP;
719 break;
720 case RNDIS_STATUS_ADAPTER_NOT_READY:
721 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
722 ret = -EBUSY;
723 break;
724 }
725 return ret;
726 }
727
728 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
729 {
730 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
731 union {
732 void *buf;
733 struct rndis_msg_hdr *header;
734 struct rndis_query *get;
735 struct rndis_query_c *get_c;
736 } u;
737 int ret, buflen;
738 int resplen, respoffs, copylen;
739
740 buflen = *len + sizeof(*u.get);
741 if (buflen < CONTROL_BUFFER_SIZE)
742 buflen = CONTROL_BUFFER_SIZE;
743
744 if (buflen > COMMAND_BUFFER_SIZE) {
745 u.buf = kmalloc(buflen, GFP_KERNEL);
746 if (!u.buf)
747 return -ENOMEM;
748 } else {
749 u.buf = priv->command_buffer;
750 }
751
752 mutex_lock(&priv->command_lock);
753
754 memset(u.get, 0, sizeof *u.get);
755 u.get->msg_type = RNDIS_MSG_QUERY;
756 u.get->msg_len = cpu_to_le32(sizeof *u.get);
757 u.get->oid = oid;
758
759 priv->current_command_oid = oid;
760 ret = rndis_command(dev, u.header, buflen);
761 priv->current_command_oid = 0;
762 if (ret < 0)
763 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
764 __func__, oid_to_string(oid), ret,
765 le32_to_cpu(u.get_c->status));
766
767 if (ret == 0) {
768 resplen = le32_to_cpu(u.get_c->len);
769 respoffs = le32_to_cpu(u.get_c->offset) + 8;
770
771 if (respoffs > buflen) {
772 /* Device returned data offset outside buffer, error. */
773 netdev_dbg(dev->net, "%s(%s): received invalid "
774 "data offset: %d > %d\n", __func__,
775 oid_to_string(oid), respoffs, buflen);
776
777 ret = -EINVAL;
778 goto exit_unlock;
779 }
780
781 if ((resplen + respoffs) > buflen) {
782 /* Device would have returned more data if buffer would
783 * have been big enough. Copy just the bits that we got.
784 */
785 copylen = buflen - respoffs;
786 } else {
787 copylen = resplen;
788 }
789
790 if (copylen > *len)
791 copylen = *len;
792
793 memcpy(data, u.buf + respoffs, copylen);
794
795 *len = resplen;
796
797 ret = rndis_error_status(u.get_c->status);
798 if (ret < 0)
799 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
800 __func__, oid_to_string(oid),
801 le32_to_cpu(u.get_c->status), ret);
802 }
803
804 exit_unlock:
805 mutex_unlock(&priv->command_lock);
806
807 if (u.buf != priv->command_buffer)
808 kfree(u.buf);
809 return ret;
810 }
811
812 static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len)
813 {
814 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
815 union {
816 void *buf;
817 struct rndis_msg_hdr *header;
818 struct rndis_set *set;
819 struct rndis_set_c *set_c;
820 } u;
821 int ret, buflen;
822
823 buflen = len + sizeof(*u.set);
824 if (buflen < CONTROL_BUFFER_SIZE)
825 buflen = CONTROL_BUFFER_SIZE;
826
827 if (buflen > COMMAND_BUFFER_SIZE) {
828 u.buf = kmalloc(buflen, GFP_KERNEL);
829 if (!u.buf)
830 return -ENOMEM;
831 } else {
832 u.buf = priv->command_buffer;
833 }
834
835 mutex_lock(&priv->command_lock);
836
837 memset(u.set, 0, sizeof *u.set);
838 u.set->msg_type = RNDIS_MSG_SET;
839 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
840 u.set->oid = oid;
841 u.set->len = cpu_to_le32(len);
842 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
843 u.set->handle = cpu_to_le32(0);
844 memcpy(u.buf + sizeof(*u.set), data, len);
845
846 priv->current_command_oid = oid;
847 ret = rndis_command(dev, u.header, buflen);
848 priv->current_command_oid = 0;
849 if (ret < 0)
850 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
851 __func__, oid_to_string(oid), ret,
852 le32_to_cpu(u.set_c->status));
853
854 if (ret == 0) {
855 ret = rndis_error_status(u.set_c->status);
856
857 if (ret < 0)
858 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
859 __func__, oid_to_string(oid),
860 le32_to_cpu(u.set_c->status), ret);
861 }
862
863 mutex_unlock(&priv->command_lock);
864
865 if (u.buf != priv->command_buffer)
866 kfree(u.buf);
867 return ret;
868 }
869
870 static int rndis_reset(struct usbnet *usbdev)
871 {
872 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
873 struct rndis_reset *reset;
874 int ret;
875
876 mutex_lock(&priv->command_lock);
877
878 reset = (void *)priv->command_buffer;
879 memset(reset, 0, sizeof(*reset));
880 reset->msg_type = RNDIS_MSG_RESET;
881 reset->msg_len = cpu_to_le32(sizeof(*reset));
882 priv->current_command_oid = 0;
883 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
884
885 mutex_unlock(&priv->command_lock);
886
887 if (ret < 0)
888 return ret;
889 return 0;
890 }
891
892 /*
893 * Specs say that we can only set config parameters only soon after device
894 * initialization.
895 * value_type: 0 = u32, 2 = unicode string
896 */
897 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
898 int value_type, void *value)
899 {
900 struct ndis_config_param *infobuf;
901 int value_len, info_len, param_len, ret, i;
902 __le16 *unibuf;
903 __le32 *dst_value;
904
905 if (value_type == 0)
906 value_len = sizeof(__le32);
907 else if (value_type == 2)
908 value_len = strlen(value) * sizeof(__le16);
909 else
910 return -EINVAL;
911
912 param_len = strlen(param) * sizeof(__le16);
913 info_len = sizeof(*infobuf) + param_len + value_len;
914
915 #ifdef DEBUG
916 info_len += 12;
917 #endif
918 infobuf = kmalloc(info_len, GFP_KERNEL);
919 if (!infobuf)
920 return -ENOMEM;
921
922 #ifdef DEBUG
923 info_len -= 12;
924 /* extra 12 bytes are for padding (debug output) */
925 memset(infobuf, 0xCC, info_len + 12);
926 #endif
927
928 if (value_type == 2)
929 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
930 param, (u8 *)value);
931 else
932 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
933 param, *(u32 *)value);
934
935 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
936 infobuf->name_length = cpu_to_le32(param_len);
937 infobuf->type = cpu_to_le32(value_type);
938 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
939 infobuf->value_length = cpu_to_le32(value_len);
940
941 /* simple string to unicode string conversion */
942 unibuf = (void *)infobuf + sizeof(*infobuf);
943 for (i = 0; i < param_len / sizeof(__le16); i++)
944 unibuf[i] = cpu_to_le16(param[i]);
945
946 if (value_type == 2) {
947 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
948 for (i = 0; i < value_len / sizeof(__le16); i++)
949 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
950 } else {
951 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
952 *dst_value = cpu_to_le32(*(u32 *)value);
953 }
954
955 #ifdef DEBUG
956 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
957 for (i = 0; i < info_len; i += 12) {
958 u32 *tmp = (u32 *)((u8 *)infobuf + i);
959 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
960 cpu_to_be32(tmp[0]),
961 cpu_to_be32(tmp[1]),
962 cpu_to_be32(tmp[2]));
963 }
964 #endif
965
966 ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
967 infobuf, info_len);
968 if (ret != 0)
969 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
970 ret);
971
972 kfree(infobuf);
973 return ret;
974 }
975
976 static int rndis_set_config_parameter_str(struct usbnet *dev,
977 char *param, char *value)
978 {
979 return rndis_set_config_parameter(dev, param, 2, value);
980 }
981
982 /*
983 * data conversion functions
984 */
985 static int level_to_qual(int level)
986 {
987 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
988 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
989 }
990
991 /*
992 * common functions
993 */
994 static int set_infra_mode(struct usbnet *usbdev, int mode);
995 static void restore_keys(struct usbnet *usbdev);
996 static int rndis_check_bssid_list(struct usbnet *usbdev);
997
998 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
999 {
1000 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1001 int ret;
1002
1003 ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1004 if (ret < 0) {
1005 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1006 return ret;
1007 }
1008 if (ret == 0) {
1009 memcpy(&priv->essid, ssid, sizeof(priv->essid));
1010 priv->radio_on = true;
1011 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1012 }
1013
1014 return ret;
1015 }
1016
1017 static int set_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1018 {
1019 int ret;
1020
1021 ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1022 if (ret < 0) {
1023 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1024 bssid, ret);
1025 return ret;
1026 }
1027
1028 return ret;
1029 }
1030
1031 static int clear_bssid(struct usbnet *usbdev)
1032 {
1033 u8 broadcast_mac[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
1034
1035 return set_bssid(usbdev, broadcast_mac);
1036 }
1037
1038 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1039 {
1040 int ret, len;
1041
1042 len = ETH_ALEN;
1043 ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1044
1045 if (ret != 0)
1046 memset(bssid, 0, ETH_ALEN);
1047
1048 return ret;
1049 }
1050
1051 static int get_association_info(struct usbnet *usbdev,
1052 struct ndis_80211_assoc_info *info, int len)
1053 {
1054 return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1055 info, &len);
1056 }
1057
1058 static bool is_associated(struct usbnet *usbdev)
1059 {
1060 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1061 u8 bssid[ETH_ALEN];
1062 int ret;
1063
1064 if (!priv->radio_on)
1065 return false;
1066
1067 ret = get_bssid(usbdev, bssid);
1068
1069 return (ret == 0 && !is_zero_ether_addr(bssid));
1070 }
1071
1072 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1073 {
1074 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1075 struct ndis_80211_ssid ssid;
1076 int i, ret = 0;
1077
1078 if (priv->radio_on) {
1079 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1080 if (ret == 0) {
1081 priv->radio_on = false;
1082 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1083 __func__);
1084
1085 if (reset_ssid)
1086 msleep(100);
1087 }
1088 }
1089
1090 /* disassociate causes radio to be turned off; if reset_ssid
1091 * is given, set random ssid to enable radio */
1092 if (reset_ssid) {
1093 /* Set device to infrastructure mode so we don't get ad-hoc
1094 * 'media connect' indications with the random ssid.
1095 */
1096 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1097
1098 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1099 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1100 ssid.essid[0] = 0x1;
1101 ssid.essid[1] = 0xff;
1102 for (i = 2; i < sizeof(ssid.essid); i++)
1103 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1104 ret = set_essid(usbdev, &ssid);
1105 }
1106 return ret;
1107 }
1108
1109 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1110 enum nl80211_auth_type auth_type, int keymgmt)
1111 {
1112 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1113 __le32 tmp;
1114 int auth_mode, ret;
1115
1116 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1117 __func__, wpa_version, auth_type, keymgmt);
1118
1119 if (wpa_version & NL80211_WPA_VERSION_2) {
1120 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1121 auth_mode = NDIS_80211_AUTH_WPA2;
1122 else
1123 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1124 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1125 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1126 auth_mode = NDIS_80211_AUTH_WPA;
1127 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1128 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1129 else
1130 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1131 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1132 auth_mode = NDIS_80211_AUTH_SHARED;
1133 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1134 auth_mode = NDIS_80211_AUTH_OPEN;
1135 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1136 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1137 else
1138 return -ENOTSUPP;
1139
1140 tmp = cpu_to_le32(auth_mode);
1141 ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1142 sizeof(tmp));
1143 if (ret != 0) {
1144 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1145 ret);
1146 return ret;
1147 }
1148
1149 priv->wpa_version = wpa_version;
1150
1151 return 0;
1152 }
1153
1154 static int set_priv_filter(struct usbnet *usbdev)
1155 {
1156 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1157 __le32 tmp;
1158
1159 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1160 __func__, priv->wpa_version);
1161
1162 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1163 priv->wpa_version & NL80211_WPA_VERSION_1)
1164 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1165 else
1166 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1167
1168 return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1169 sizeof(tmp));
1170 }
1171
1172 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1173 {
1174 __le32 tmp;
1175 int encr_mode, ret;
1176
1177 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1178 __func__, pairwise, groupwise);
1179
1180 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1181 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1182 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1183 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1184 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1185 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1186 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1187 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1188 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1189 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1190 else
1191 encr_mode = NDIS_80211_ENCR_DISABLED;
1192
1193 tmp = cpu_to_le32(encr_mode);
1194 ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1195 sizeof(tmp));
1196 if (ret != 0) {
1197 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1198 ret);
1199 return ret;
1200 }
1201
1202 return 0;
1203 }
1204
1205 static int set_infra_mode(struct usbnet *usbdev, int mode)
1206 {
1207 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1208 __le32 tmp;
1209 int ret;
1210
1211 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1212 __func__, priv->infra_mode);
1213
1214 tmp = cpu_to_le32(mode);
1215 ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1216 sizeof(tmp));
1217 if (ret != 0) {
1218 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1219 ret);
1220 return ret;
1221 }
1222
1223 /* NDIS drivers clear keys when infrastructure mode is
1224 * changed. But Linux tools assume otherwise. So set the
1225 * keys */
1226 restore_keys(usbdev);
1227
1228 priv->infra_mode = mode;
1229 return 0;
1230 }
1231
1232 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1233 {
1234 __le32 tmp;
1235
1236 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1237
1238 if (rts_threshold < 0 || rts_threshold > 2347)
1239 rts_threshold = 2347;
1240
1241 tmp = cpu_to_le32(rts_threshold);
1242 return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1243 sizeof(tmp));
1244 }
1245
1246 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1247 {
1248 __le32 tmp;
1249
1250 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1251
1252 if (frag_threshold < 256 || frag_threshold > 2346)
1253 frag_threshold = 2346;
1254
1255 tmp = cpu_to_le32(frag_threshold);
1256 return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1257 sizeof(tmp));
1258 }
1259
1260 static void set_default_iw_params(struct usbnet *usbdev)
1261 {
1262 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1263 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1264 RNDIS_WLAN_KEY_MGMT_NONE);
1265 set_priv_filter(usbdev);
1266 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1267 }
1268
1269 static int deauthenticate(struct usbnet *usbdev)
1270 {
1271 int ret;
1272
1273 ret = disassociate(usbdev, true);
1274 set_default_iw_params(usbdev);
1275 return ret;
1276 }
1277
1278 static int set_channel(struct usbnet *usbdev, int channel)
1279 {
1280 struct ndis_80211_conf config;
1281 unsigned int dsconfig;
1282 int len, ret;
1283
1284 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1285
1286 /* this OID is valid only when not associated */
1287 if (is_associated(usbdev))
1288 return 0;
1289
1290 dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1291
1292 len = sizeof(config);
1293 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1294 if (ret < 0) {
1295 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1296 __func__);
1297 return ret;
1298 }
1299
1300 config.ds_config = cpu_to_le32(dsconfig);
1301 ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1302 sizeof(config));
1303
1304 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1305
1306 return ret;
1307 }
1308
1309 /* index must be 0 - N, as per NDIS */
1310 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1311 int index)
1312 {
1313 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1314 struct ndis_80211_wep_key ndis_key;
1315 u32 cipher;
1316 int ret;
1317
1318 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1319 __func__, index, key_len);
1320
1321 if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1322 return -EINVAL;
1323
1324 if (key_len == 5)
1325 cipher = WLAN_CIPHER_SUITE_WEP40;
1326 else
1327 cipher = WLAN_CIPHER_SUITE_WEP104;
1328
1329 memset(&ndis_key, 0, sizeof(ndis_key));
1330
1331 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1332 ndis_key.length = cpu_to_le32(key_len);
1333 ndis_key.index = cpu_to_le32(index);
1334 memcpy(&ndis_key.material, key, key_len);
1335
1336 if (index == priv->encr_tx_key_index) {
1337 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1338 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1339 RNDIS_WLAN_ALG_NONE);
1340 if (ret)
1341 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1342 ret);
1343 }
1344
1345 ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1346 sizeof(ndis_key));
1347 if (ret != 0) {
1348 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1349 index + 1, ret);
1350 return ret;
1351 }
1352
1353 priv->encr_keys[index].len = key_len;
1354 priv->encr_keys[index].cipher = cipher;
1355 memcpy(&priv->encr_keys[index].material, key, key_len);
1356 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1357
1358 return 0;
1359 }
1360
1361 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1362 int index, const u8 *addr, const u8 *rx_seq,
1363 int seq_len, u32 cipher, __le32 flags)
1364 {
1365 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1366 struct ndis_80211_key ndis_key;
1367 bool is_addr_ok;
1368 int ret;
1369
1370 if (index < 0 || index >= 4) {
1371 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1372 __func__, index);
1373 return -EINVAL;
1374 }
1375 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1376 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1377 __func__, key_len);
1378 return -EINVAL;
1379 }
1380 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1381 if (!rx_seq || seq_len <= 0) {
1382 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1383 __func__);
1384 return -EINVAL;
1385 }
1386 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1387 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1388 return -EINVAL;
1389 }
1390 }
1391
1392 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1393 !is_broadcast_ether_addr(addr);
1394 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1395 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1396 __func__, addr);
1397 return -EINVAL;
1398 }
1399
1400 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1401 __func__, index,
1402 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1403 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1404 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1405
1406 memset(&ndis_key, 0, sizeof(ndis_key));
1407
1408 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1409 sizeof(ndis_key.material) + key_len);
1410 ndis_key.length = cpu_to_le32(key_len);
1411 ndis_key.index = cpu_to_le32(index) | flags;
1412
1413 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1414 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1415 * different order than NDIS spec, so swap the order here. */
1416 memcpy(ndis_key.material, key, 16);
1417 memcpy(ndis_key.material + 16, key + 24, 8);
1418 memcpy(ndis_key.material + 24, key + 16, 8);
1419 } else
1420 memcpy(ndis_key.material, key, key_len);
1421
1422 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1423 memcpy(ndis_key.rsc, rx_seq, seq_len);
1424
1425 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1426 /* pairwise key */
1427 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1428 } else {
1429 /* group key */
1430 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1431 memset(ndis_key.bssid, 0xff, ETH_ALEN);
1432 else
1433 get_bssid(usbdev, ndis_key.bssid);
1434 }
1435
1436 ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1437 le32_to_cpu(ndis_key.size));
1438 netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1439 __func__, ret);
1440 if (ret != 0)
1441 return ret;
1442
1443 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1444 priv->encr_keys[index].len = key_len;
1445 priv->encr_keys[index].cipher = cipher;
1446 memcpy(&priv->encr_keys[index].material, key, key_len);
1447 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1448 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1449 else
1450 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1451
1452 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1453 priv->encr_tx_key_index = index;
1454
1455 return 0;
1456 }
1457
1458 static int restore_key(struct usbnet *usbdev, int key_idx)
1459 {
1460 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1461 struct rndis_wlan_encr_key key;
1462
1463 if (is_wpa_key(priv, key_idx))
1464 return 0;
1465
1466 key = priv->encr_keys[key_idx];
1467
1468 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1469
1470 if (key.len == 0)
1471 return 0;
1472
1473 return add_wep_key(usbdev, key.material, key.len, key_idx);
1474 }
1475
1476 static void restore_keys(struct usbnet *usbdev)
1477 {
1478 int i;
1479
1480 for (i = 0; i < 4; i++)
1481 restore_key(usbdev, i);
1482 }
1483
1484 static void clear_key(struct rndis_wlan_private *priv, int idx)
1485 {
1486 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1487 }
1488
1489 /* remove_key is for both wep and wpa */
1490 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1491 {
1492 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1493 struct ndis_80211_remove_key remove_key;
1494 __le32 keyindex;
1495 bool is_wpa;
1496 int ret;
1497
1498 if (priv->encr_keys[index].len == 0)
1499 return 0;
1500
1501 is_wpa = is_wpa_key(priv, index);
1502
1503 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1504 __func__, index, is_wpa ? "wpa" : "wep",
1505 priv->encr_keys[index].len);
1506
1507 clear_key(priv, index);
1508
1509 if (is_wpa) {
1510 remove_key.size = cpu_to_le32(sizeof(remove_key));
1511 remove_key.index = cpu_to_le32(index);
1512 if (bssid) {
1513 /* pairwise key */
1514 if (!is_broadcast_ether_addr(bssid))
1515 remove_key.index |=
1516 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1517 memcpy(remove_key.bssid, bssid,
1518 sizeof(remove_key.bssid));
1519 } else
1520 memset(remove_key.bssid, 0xff,
1521 sizeof(remove_key.bssid));
1522
1523 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1524 sizeof(remove_key));
1525 if (ret != 0)
1526 return ret;
1527 } else {
1528 keyindex = cpu_to_le32(index);
1529 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1530 sizeof(keyindex));
1531 if (ret != 0) {
1532 netdev_warn(usbdev->net,
1533 "removing encryption key %d failed (%08X)\n",
1534 index, ret);
1535 return ret;
1536 }
1537 }
1538
1539 /* if it is transmit key, disable encryption */
1540 if (index == priv->encr_tx_key_index)
1541 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1542
1543 return 0;
1544 }
1545
1546 static void set_multicast_list(struct usbnet *usbdev)
1547 {
1548 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1549 struct netdev_hw_addr *ha;
1550 __le32 filter, basefilter;
1551 int ret;
1552 char *mc_addrs = NULL;
1553 int mc_count;
1554
1555 basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1556 RNDIS_PACKET_TYPE_BROADCAST;
1557
1558 if (usbdev->net->flags & IFF_PROMISC) {
1559 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1560 RNDIS_PACKET_TYPE_ALL_LOCAL;
1561 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1562 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1563 }
1564
1565 if (filter != basefilter)
1566 goto set_filter;
1567
1568 /*
1569 * mc_list should be accessed holding the lock, so copy addresses to
1570 * local buffer first.
1571 */
1572 netif_addr_lock_bh(usbdev->net);
1573 mc_count = netdev_mc_count(usbdev->net);
1574 if (mc_count > priv->multicast_size) {
1575 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1576 } else if (mc_count) {
1577 int i = 0;
1578
1579 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1580 if (!mc_addrs) {
1581 netdev_warn(usbdev->net,
1582 "couldn't alloc %d bytes of memory\n",
1583 mc_count * ETH_ALEN);
1584 netif_addr_unlock_bh(usbdev->net);
1585 return;
1586 }
1587
1588 netdev_for_each_mc_addr(ha, usbdev->net)
1589 memcpy(mc_addrs + i++ * ETH_ALEN,
1590 ha->addr, ETH_ALEN);
1591 }
1592 netif_addr_unlock_bh(usbdev->net);
1593
1594 if (filter != basefilter)
1595 goto set_filter;
1596
1597 if (mc_count) {
1598 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1599 mc_count * ETH_ALEN);
1600 kfree(mc_addrs);
1601 if (ret == 0)
1602 filter |= RNDIS_PACKET_TYPE_MULTICAST;
1603 else
1604 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1605
1606 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1607 mc_count, priv->multicast_size, ret);
1608 }
1609
1610 set_filter:
1611 ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1612 sizeof(filter));
1613 if (ret < 0) {
1614 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1615 le32_to_cpu(filter));
1616 }
1617
1618 netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1619 le32_to_cpu(filter), ret);
1620 }
1621
1622 #ifdef DEBUG
1623 static void debug_print_pmkids(struct usbnet *usbdev,
1624 struct ndis_80211_pmkid *pmkids,
1625 const char *func_str)
1626 {
1627 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1628 int i, len, count, max_pmkids, entry_len;
1629
1630 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1631 len = le32_to_cpu(pmkids->length);
1632 count = le32_to_cpu(pmkids->bssid_info_count);
1633
1634 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1635
1636 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1637 "%d)\n", func_str, count, len, entry_len);
1638
1639 if (count > max_pmkids)
1640 count = max_pmkids;
1641
1642 for (i = 0; i < count; i++) {
1643 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1644
1645 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1646 "pmkid: %08X:%08X:%08X:%08X\n",
1647 func_str, pmkids->bssid_info[i].bssid,
1648 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1649 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1650 }
1651 }
1652 #else
1653 static void debug_print_pmkids(struct usbnet *usbdev,
1654 struct ndis_80211_pmkid *pmkids,
1655 const char *func_str)
1656 {
1657 return;
1658 }
1659 #endif
1660
1661 static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1662 {
1663 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1664 struct ndis_80211_pmkid *pmkids;
1665 int len, ret, max_pmkids;
1666
1667 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1668 len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1669
1670 pmkids = kzalloc(len, GFP_KERNEL);
1671 if (!pmkids)
1672 return ERR_PTR(-ENOMEM);
1673
1674 pmkids->length = cpu_to_le32(len);
1675 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1676
1677 ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1678 if (ret < 0) {
1679 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1680 " -> %d\n", __func__, len, max_pmkids, ret);
1681
1682 kfree(pmkids);
1683 return ERR_PTR(ret);
1684 }
1685
1686 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1687 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1688
1689 debug_print_pmkids(usbdev, pmkids, __func__);
1690
1691 return pmkids;
1692 }
1693
1694 static int set_device_pmkids(struct usbnet *usbdev,
1695 struct ndis_80211_pmkid *pmkids)
1696 {
1697 int ret, len, num_pmkids;
1698
1699 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1700 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1701 pmkids->length = cpu_to_le32(len);
1702
1703 debug_print_pmkids(usbdev, pmkids, __func__);
1704
1705 ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1706 le32_to_cpu(pmkids->length));
1707 if (ret < 0) {
1708 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1709 "\n", __func__, len, num_pmkids, ret);
1710 }
1711
1712 kfree(pmkids);
1713 return ret;
1714 }
1715
1716 static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1717 struct ndis_80211_pmkid *pmkids,
1718 struct cfg80211_pmksa *pmksa,
1719 int max_pmkids)
1720 {
1721 int i, len, count, newlen, err;
1722
1723 len = le32_to_cpu(pmkids->length);
1724 count = le32_to_cpu(pmkids->bssid_info_count);
1725
1726 if (count > max_pmkids)
1727 count = max_pmkids;
1728
1729 for (i = 0; i < count; i++)
1730 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1731 pmksa->bssid))
1732 break;
1733
1734 /* pmkid not found */
1735 if (i == count) {
1736 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1737 __func__, pmksa->bssid);
1738 err = -ENOENT;
1739 goto error;
1740 }
1741
1742 for (; i + 1 < count; i++)
1743 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1744
1745 count--;
1746 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1747
1748 pmkids->length = cpu_to_le32(newlen);
1749 pmkids->bssid_info_count = cpu_to_le32(count);
1750
1751 return pmkids;
1752 error:
1753 kfree(pmkids);
1754 return ERR_PTR(err);
1755 }
1756
1757 static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1758 struct ndis_80211_pmkid *pmkids,
1759 struct cfg80211_pmksa *pmksa,
1760 int max_pmkids)
1761 {
1762 int i, err, len, count, newlen;
1763
1764 len = le32_to_cpu(pmkids->length);
1765 count = le32_to_cpu(pmkids->bssid_info_count);
1766
1767 if (count > max_pmkids)
1768 count = max_pmkids;
1769
1770 /* update with new pmkid */
1771 for (i = 0; i < count; i++) {
1772 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1773 pmksa->bssid))
1774 continue;
1775
1776 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1777 WLAN_PMKID_LEN);
1778
1779 return pmkids;
1780 }
1781
1782 /* out of space, return error */
1783 if (i == max_pmkids) {
1784 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1785 err = -ENOSPC;
1786 goto error;
1787 }
1788
1789 /* add new pmkid */
1790 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1791
1792 pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1793 if (!pmkids) {
1794 err = -ENOMEM;
1795 goto error;
1796 }
1797
1798 pmkids->length = cpu_to_le32(newlen);
1799 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1800
1801 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1802 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1803
1804 return pmkids;
1805 error:
1806 kfree(pmkids);
1807 return ERR_PTR(err);
1808 }
1809
1810 /*
1811 * cfg80211 ops
1812 */
1813 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1814 struct net_device *dev,
1815 enum nl80211_iftype type, u32 *flags,
1816 struct vif_params *params)
1817 {
1818 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1819 struct usbnet *usbdev = priv->usbdev;
1820 int mode;
1821
1822 switch (type) {
1823 case NL80211_IFTYPE_ADHOC:
1824 mode = NDIS_80211_INFRA_ADHOC;
1825 break;
1826 case NL80211_IFTYPE_STATION:
1827 mode = NDIS_80211_INFRA_INFRA;
1828 break;
1829 default:
1830 return -EINVAL;
1831 }
1832
1833 priv->wdev.iftype = type;
1834
1835 return set_infra_mode(usbdev, mode);
1836 }
1837
1838 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1839 {
1840 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1841 struct usbnet *usbdev = priv->usbdev;
1842 int err;
1843
1844 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1845 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1846 if (err < 0)
1847 return err;
1848 }
1849
1850 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1851 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1852 if (err < 0)
1853 return err;
1854 }
1855
1856 return 0;
1857 }
1858
1859 static int rndis_set_tx_power(struct wiphy *wiphy, enum tx_power_setting type,
1860 int dbm)
1861 {
1862 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1863 struct usbnet *usbdev = priv->usbdev;
1864
1865 netdev_dbg(usbdev->net, "%s(): type:0x%x dbm:%i\n",
1866 __func__, type, dbm);
1867
1868 /* Device doesn't support changing txpower after initialization, only
1869 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1870 * currently used.
1871 */
1872 if (type == TX_POWER_AUTOMATIC || dbm == get_bcm4320_power_dbm(priv)) {
1873 if (!priv->radio_on)
1874 disassociate(usbdev, true); /* turn on radio */
1875
1876 return 0;
1877 }
1878
1879 return -ENOTSUPP;
1880 }
1881
1882 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1883 {
1884 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1885 struct usbnet *usbdev = priv->usbdev;
1886
1887 *dbm = get_bcm4320_power_dbm(priv);
1888
1889 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1890
1891 return 0;
1892 }
1893
1894 #define SCAN_DELAY_JIFFIES (6 * HZ)
1895 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1896 struct cfg80211_scan_request *request)
1897 {
1898 struct usbnet *usbdev = netdev_priv(dev);
1899 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1900 int ret;
1901 __le32 tmp;
1902
1903 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1904
1905 /* Get current bssid list from device before new scan, as new scan
1906 * clears internal bssid list.
1907 */
1908 rndis_check_bssid_list(usbdev);
1909
1910 if (!request)
1911 return -EINVAL;
1912
1913 if (priv->scan_request && priv->scan_request != request)
1914 return -EBUSY;
1915
1916 priv->scan_request = request;
1917
1918 tmp = cpu_to_le32(1);
1919 ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1920 sizeof(tmp));
1921 if (ret == 0) {
1922 /* Wait before retrieving scan results from device */
1923 queue_delayed_work(priv->workqueue, &priv->scan_work,
1924 SCAN_DELAY_JIFFIES);
1925 }
1926
1927 return ret;
1928 }
1929
1930 static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1931 struct ndis_80211_bssid_ex *bssid)
1932 {
1933 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1934 struct ieee80211_channel *channel;
1935 s32 signal;
1936 u64 timestamp;
1937 u16 capability;
1938 u16 beacon_interval;
1939 struct ndis_80211_fixed_ies *fixed;
1940 int ie_len, bssid_len;
1941 u8 *ie;
1942
1943 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM]\n",
1944 bssid->ssid.essid, bssid->mac);
1945
1946 /* parse bssid structure */
1947 bssid_len = le32_to_cpu(bssid->length);
1948
1949 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1950 sizeof(struct ndis_80211_fixed_ies))
1951 return NULL;
1952
1953 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1954
1955 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1956 ie_len = min(bssid_len - (int)sizeof(*bssid),
1957 (int)le32_to_cpu(bssid->ie_length));
1958 ie_len -= sizeof(struct ndis_80211_fixed_ies);
1959 if (ie_len < 0)
1960 return NULL;
1961
1962 /* extract data for cfg80211_inform_bss */
1963 channel = ieee80211_get_channel(priv->wdev.wiphy,
1964 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1965 if (!channel)
1966 return NULL;
1967
1968 signal = level_to_qual(le32_to_cpu(bssid->rssi));
1969 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1970 capability = le16_to_cpu(fixed->capabilities);
1971 beacon_interval = le16_to_cpu(fixed->beacon_interval);
1972
1973 return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
1974 timestamp, capability, beacon_interval, ie, ie_len, signal,
1975 GFP_KERNEL);
1976 }
1977
1978 static int rndis_check_bssid_list(struct usbnet *usbdev)
1979 {
1980 void *buf = NULL;
1981 struct ndis_80211_bssid_list_ex *bssid_list;
1982 struct ndis_80211_bssid_ex *bssid;
1983 int ret = -EINVAL, len, count, bssid_len;
1984 bool resized = false;
1985
1986 netdev_dbg(usbdev->net, "check_bssid_list\n");
1987
1988 len = CONTROL_BUFFER_SIZE;
1989 resize_buf:
1990 buf = kmalloc(len, GFP_KERNEL);
1991 if (!buf) {
1992 ret = -ENOMEM;
1993 goto out;
1994 }
1995
1996 ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
1997 if (ret != 0)
1998 goto out;
1999
2000 if (!resized && len > CONTROL_BUFFER_SIZE) {
2001 resized = true;
2002 kfree(buf);
2003 goto resize_buf;
2004 }
2005
2006 bssid_list = buf;
2007 bssid = bssid_list->bssid;
2008 bssid_len = le32_to_cpu(bssid->length);
2009 count = le32_to_cpu(bssid_list->num_items);
2010 netdev_dbg(usbdev->net, "check_bssid_list: %d BSSIDs found (buflen: %d)\n",
2011 count, len);
2012
2013 while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
2014 rndis_bss_info_update(usbdev, bssid);
2015
2016 bssid = (void *)bssid + bssid_len;
2017 bssid_len = le32_to_cpu(bssid->length);
2018 count--;
2019 }
2020
2021 out:
2022 kfree(buf);
2023 return ret;
2024 }
2025
2026 static void rndis_get_scan_results(struct work_struct *work)
2027 {
2028 struct rndis_wlan_private *priv =
2029 container_of(work, struct rndis_wlan_private, scan_work.work);
2030 struct usbnet *usbdev = priv->usbdev;
2031 int ret;
2032
2033 netdev_dbg(usbdev->net, "get_scan_results\n");
2034
2035 if (!priv->scan_request)
2036 return;
2037
2038 ret = rndis_check_bssid_list(usbdev);
2039
2040 cfg80211_scan_done(priv->scan_request, ret < 0);
2041
2042 priv->scan_request = NULL;
2043 }
2044
2045 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2046 struct cfg80211_connect_params *sme)
2047 {
2048 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2049 struct usbnet *usbdev = priv->usbdev;
2050 struct ieee80211_channel *channel = sme->channel;
2051 struct ndis_80211_ssid ssid;
2052 int pairwise = RNDIS_WLAN_ALG_NONE;
2053 int groupwise = RNDIS_WLAN_ALG_NONE;
2054 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2055 int length, i, ret, chan = -1;
2056
2057 if (channel)
2058 chan = ieee80211_frequency_to_channel(channel->center_freq);
2059
2060 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2061 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2062 pairwise |=
2063 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2064
2065 if (sme->crypto.n_ciphers_pairwise > 0 &&
2066 pairwise == RNDIS_WLAN_ALG_NONE) {
2067 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2068 return -ENOTSUPP;
2069 }
2070
2071 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2072 keymgmt |=
2073 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2074
2075 if (sme->crypto.n_akm_suites > 0 &&
2076 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2077 netdev_err(usbdev->net, "Invalid keymgmt\n");
2078 return -ENOTSUPP;
2079 }
2080
2081 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2082 sme->ssid, sme->bssid, chan,
2083 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2084 groupwise, pairwise, keymgmt);
2085
2086 if (is_associated(usbdev))
2087 disassociate(usbdev, false);
2088
2089 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2090 if (ret < 0) {
2091 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2092 ret);
2093 goto err_turn_radio_on;
2094 }
2095
2096 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2097 keymgmt);
2098 if (ret < 0) {
2099 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2100 ret);
2101 goto err_turn_radio_on;
2102 }
2103
2104 set_priv_filter(usbdev);
2105
2106 ret = set_encr_mode(usbdev, pairwise, groupwise);
2107 if (ret < 0) {
2108 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2109 ret);
2110 goto err_turn_radio_on;
2111 }
2112
2113 if (channel) {
2114 ret = set_channel(usbdev, chan);
2115 if (ret < 0) {
2116 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2117 ret);
2118 goto err_turn_radio_on;
2119 }
2120 }
2121
2122 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2123 priv->encr_tx_key_index = sme->key_idx;
2124 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2125 if (ret < 0) {
2126 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2127 ret, sme->key_len, sme->key_idx);
2128 goto err_turn_radio_on;
2129 }
2130 }
2131
2132 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2133 !is_broadcast_ether_addr(sme->bssid)) {
2134 ret = set_bssid(usbdev, sme->bssid);
2135 if (ret < 0) {
2136 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2137 ret);
2138 goto err_turn_radio_on;
2139 }
2140 } else
2141 clear_bssid(usbdev);
2142
2143 length = sme->ssid_len;
2144 if (length > NDIS_802_11_LENGTH_SSID)
2145 length = NDIS_802_11_LENGTH_SSID;
2146
2147 memset(&ssid, 0, sizeof(ssid));
2148 ssid.length = cpu_to_le32(length);
2149 memcpy(ssid.essid, sme->ssid, length);
2150
2151 /* Pause and purge rx queue, so we don't pass packets before
2152 * 'media connect'-indication.
2153 */
2154 usbnet_pause_rx(usbdev);
2155 usbnet_purge_paused_rxq(usbdev);
2156
2157 ret = set_essid(usbdev, &ssid);
2158 if (ret < 0)
2159 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2160 return ret;
2161
2162 err_turn_radio_on:
2163 disassociate(usbdev, true);
2164
2165 return ret;
2166 }
2167
2168 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2169 u16 reason_code)
2170 {
2171 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2172 struct usbnet *usbdev = priv->usbdev;
2173
2174 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2175
2176 priv->connected = false;
2177 memset(priv->bssid, 0, ETH_ALEN);
2178
2179 return deauthenticate(usbdev);
2180 }
2181
2182 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2183 struct cfg80211_ibss_params *params)
2184 {
2185 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2186 struct usbnet *usbdev = priv->usbdev;
2187 struct ieee80211_channel *channel = params->channel;
2188 struct ndis_80211_ssid ssid;
2189 enum nl80211_auth_type auth_type;
2190 int ret, alg, length, chan = -1;
2191
2192 if (channel)
2193 chan = ieee80211_frequency_to_channel(channel->center_freq);
2194
2195 /* TODO: How to handle ad-hoc encryption?
2196 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2197 * pre-shared for encryption (open/shared/wpa), is key set before
2198 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2199 */
2200 if (params->privacy) {
2201 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2202 alg = RNDIS_WLAN_ALG_WEP;
2203 } else {
2204 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2205 alg = RNDIS_WLAN_ALG_NONE;
2206 }
2207
2208 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2209 params->ssid, params->bssid, chan, params->privacy);
2210
2211 if (is_associated(usbdev))
2212 disassociate(usbdev, false);
2213
2214 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2215 if (ret < 0) {
2216 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2217 ret);
2218 goto err_turn_radio_on;
2219 }
2220
2221 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2222 if (ret < 0) {
2223 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2224 ret);
2225 goto err_turn_radio_on;
2226 }
2227
2228 set_priv_filter(usbdev);
2229
2230 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2231 if (ret < 0) {
2232 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2233 ret);
2234 goto err_turn_radio_on;
2235 }
2236
2237 if (channel) {
2238 ret = set_channel(usbdev, chan);
2239 if (ret < 0) {
2240 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2241 ret);
2242 goto err_turn_radio_on;
2243 }
2244 }
2245
2246 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2247 !is_broadcast_ether_addr(params->bssid)) {
2248 ret = set_bssid(usbdev, params->bssid);
2249 if (ret < 0) {
2250 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2251 ret);
2252 goto err_turn_radio_on;
2253 }
2254 } else
2255 clear_bssid(usbdev);
2256
2257 length = params->ssid_len;
2258 if (length > NDIS_802_11_LENGTH_SSID)
2259 length = NDIS_802_11_LENGTH_SSID;
2260
2261 memset(&ssid, 0, sizeof(ssid));
2262 ssid.length = cpu_to_le32(length);
2263 memcpy(ssid.essid, params->ssid, length);
2264
2265 /* Don't need to pause rx queue for ad-hoc. */
2266 usbnet_purge_paused_rxq(usbdev);
2267 usbnet_resume_rx(usbdev);
2268
2269 ret = set_essid(usbdev, &ssid);
2270 if (ret < 0)
2271 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2272 ret);
2273 return ret;
2274
2275 err_turn_radio_on:
2276 disassociate(usbdev, true);
2277
2278 return ret;
2279 }
2280
2281 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2282 {
2283 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2284 struct usbnet *usbdev = priv->usbdev;
2285
2286 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2287
2288 priv->connected = false;
2289 memset(priv->bssid, 0, ETH_ALEN);
2290
2291 return deauthenticate(usbdev);
2292 }
2293
2294 static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2295 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2296 {
2297 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2298 struct usbnet *usbdev = priv->usbdev;
2299
2300 return set_channel(usbdev,
2301 ieee80211_frequency_to_channel(chan->center_freq));
2302 }
2303
2304 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2305 u8 key_index, const u8 *mac_addr,
2306 struct key_params *params)
2307 {
2308 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2309 struct usbnet *usbdev = priv->usbdev;
2310 __le32 flags;
2311
2312 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2313 __func__, key_index, mac_addr, params->cipher);
2314
2315 switch (params->cipher) {
2316 case WLAN_CIPHER_SUITE_WEP40:
2317 case WLAN_CIPHER_SUITE_WEP104:
2318 return add_wep_key(usbdev, params->key, params->key_len,
2319 key_index);
2320 case WLAN_CIPHER_SUITE_TKIP:
2321 case WLAN_CIPHER_SUITE_CCMP:
2322 flags = 0;
2323
2324 if (params->seq && params->seq_len > 0)
2325 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2326 if (mac_addr)
2327 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2328 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2329
2330 return add_wpa_key(usbdev, params->key, params->key_len,
2331 key_index, mac_addr, params->seq,
2332 params->seq_len, params->cipher, flags);
2333 default:
2334 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2335 __func__, params->cipher);
2336 return -ENOTSUPP;
2337 }
2338 }
2339
2340 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2341 u8 key_index, const u8 *mac_addr)
2342 {
2343 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2344 struct usbnet *usbdev = priv->usbdev;
2345
2346 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2347
2348 return remove_key(usbdev, key_index, mac_addr);
2349 }
2350
2351 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2352 u8 key_index)
2353 {
2354 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2355 struct usbnet *usbdev = priv->usbdev;
2356 struct rndis_wlan_encr_key key;
2357
2358 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2359
2360 priv->encr_tx_key_index = key_index;
2361
2362 key = priv->encr_keys[key_index];
2363
2364 return add_wep_key(usbdev, key.material, key.len, key_index);
2365 }
2366
2367 static void rndis_fill_station_info(struct usbnet *usbdev,
2368 struct station_info *sinfo)
2369 {
2370 __le32 linkspeed, rssi;
2371 int ret, len;
2372
2373 memset(sinfo, 0, sizeof(*sinfo));
2374
2375 len = sizeof(linkspeed);
2376 ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2377 if (ret == 0) {
2378 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2379 sinfo->filled |= STATION_INFO_TX_BITRATE;
2380 }
2381
2382 len = sizeof(rssi);
2383 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2384 if (ret == 0) {
2385 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2386 sinfo->filled |= STATION_INFO_SIGNAL;
2387 }
2388 }
2389
2390 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2391 u8 *mac, struct station_info *sinfo)
2392 {
2393 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2394 struct usbnet *usbdev = priv->usbdev;
2395
2396 if (compare_ether_addr(priv->bssid, mac))
2397 return -ENOENT;
2398
2399 rndis_fill_station_info(usbdev, sinfo);
2400
2401 return 0;
2402 }
2403
2404 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2405 int idx, u8 *mac, struct station_info *sinfo)
2406 {
2407 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2408 struct usbnet *usbdev = priv->usbdev;
2409
2410 if (idx != 0)
2411 return -ENOENT;
2412
2413 memcpy(mac, priv->bssid, ETH_ALEN);
2414
2415 rndis_fill_station_info(usbdev, sinfo);
2416
2417 return 0;
2418 }
2419
2420 static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2421 struct cfg80211_pmksa *pmksa)
2422 {
2423 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2424 struct usbnet *usbdev = priv->usbdev;
2425 struct ndis_80211_pmkid *pmkids;
2426 u32 *tmp = (u32 *)pmksa->pmkid;
2427
2428 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2429 pmksa->bssid,
2430 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2431 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2432
2433 pmkids = get_device_pmkids(usbdev);
2434 if (IS_ERR(pmkids)) {
2435 /* couldn't read PMKID cache from device */
2436 return PTR_ERR(pmkids);
2437 }
2438
2439 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2440 if (IS_ERR(pmkids)) {
2441 /* not found, list full, etc */
2442 return PTR_ERR(pmkids);
2443 }
2444
2445 return set_device_pmkids(usbdev, pmkids);
2446 }
2447
2448 static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2449 struct cfg80211_pmksa *pmksa)
2450 {
2451 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2452 struct usbnet *usbdev = priv->usbdev;
2453 struct ndis_80211_pmkid *pmkids;
2454 u32 *tmp = (u32 *)pmksa->pmkid;
2455
2456 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2457 pmksa->bssid,
2458 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2459 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2460
2461 pmkids = get_device_pmkids(usbdev);
2462 if (IS_ERR(pmkids)) {
2463 /* Couldn't read PMKID cache from device */
2464 return PTR_ERR(pmkids);
2465 }
2466
2467 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2468 if (IS_ERR(pmkids)) {
2469 /* not found, etc */
2470 return PTR_ERR(pmkids);
2471 }
2472
2473 return set_device_pmkids(usbdev, pmkids);
2474 }
2475
2476 static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2477 {
2478 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2479 struct usbnet *usbdev = priv->usbdev;
2480 struct ndis_80211_pmkid pmkid;
2481
2482 netdev_dbg(usbdev->net, "%s()\n", __func__);
2483
2484 memset(&pmkid, 0, sizeof(pmkid));
2485
2486 pmkid.length = cpu_to_le32(sizeof(pmkid));
2487 pmkid.bssid_info_count = cpu_to_le32(0);
2488
2489 return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2490 }
2491
2492 /*
2493 * workers, indication handlers, device poller
2494 */
2495 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2496 {
2497 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2498 struct ndis_80211_assoc_info *info = NULL;
2499 u8 bssid[ETH_ALEN];
2500 int resp_ie_len, req_ie_len;
2501 u8 *req_ie, *resp_ie;
2502 int ret, offset;
2503 bool roamed = false;
2504
2505 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2506 /* received media connect indication while connected, either
2507 * device reassociated with same AP or roamed to new. */
2508 roamed = true;
2509 }
2510
2511 req_ie_len = 0;
2512 resp_ie_len = 0;
2513 req_ie = NULL;
2514 resp_ie = NULL;
2515
2516 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2517 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2518 if (!info) {
2519 /* No memory? Try resume work later */
2520 set_bit(WORK_LINK_UP, &priv->work_pending);
2521 queue_work(priv->workqueue, &priv->work);
2522 return;
2523 }
2524
2525 /* Get association info IEs from device. */
2526 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2527 if (!ret) {
2528 req_ie_len = le32_to_cpu(info->req_ie_length);
2529 if (req_ie_len > 0) {
2530 offset = le32_to_cpu(info->offset_req_ies);
2531
2532 if (offset > CONTROL_BUFFER_SIZE)
2533 offset = CONTROL_BUFFER_SIZE;
2534
2535 req_ie = (u8 *)info + offset;
2536
2537 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2538 req_ie_len =
2539 CONTROL_BUFFER_SIZE - offset;
2540 }
2541
2542 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2543 if (resp_ie_len > 0) {
2544 offset = le32_to_cpu(info->offset_resp_ies);
2545
2546 if (offset > CONTROL_BUFFER_SIZE)
2547 offset = CONTROL_BUFFER_SIZE;
2548
2549 resp_ie = (u8 *)info + offset;
2550
2551 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2552 resp_ie_len =
2553 CONTROL_BUFFER_SIZE - offset;
2554 }
2555 }
2556 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2557 return;
2558
2559 ret = get_bssid(usbdev, bssid);
2560 if (ret < 0)
2561 memset(bssid, 0, sizeof(bssid));
2562
2563 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2564 bssid, roamed ? " roamed" : "");
2565
2566 /* Internal bss list in device always contains at least the currently
2567 * connected bss and we can get it to cfg80211 with
2568 * rndis_check_bssid_list().
2569 * NOTE: This is true for Broadcom chip, but not mentioned in RNDIS
2570 * spec.
2571 */
2572 rndis_check_bssid_list(usbdev);
2573
2574 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2575 if (!roamed)
2576 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2577 req_ie_len, resp_ie,
2578 resp_ie_len, 0, GFP_KERNEL);
2579 else
2580 cfg80211_roamed(usbdev->net, bssid, req_ie, req_ie_len,
2581 resp_ie, resp_ie_len, GFP_KERNEL);
2582 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2583 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2584
2585 if (info != NULL)
2586 kfree(info);
2587
2588 priv->connected = true;
2589 memcpy(priv->bssid, bssid, ETH_ALEN);
2590
2591 usbnet_resume_rx(usbdev);
2592 netif_carrier_on(usbdev->net);
2593 }
2594
2595 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2596 {
2597 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2598
2599 if (priv->connected) {
2600 priv->connected = false;
2601 memset(priv->bssid, 0, ETH_ALEN);
2602
2603 deauthenticate(usbdev);
2604
2605 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2606 }
2607
2608 netif_carrier_off(usbdev->net);
2609 }
2610
2611 static void rndis_wlan_worker(struct work_struct *work)
2612 {
2613 struct rndis_wlan_private *priv =
2614 container_of(work, struct rndis_wlan_private, work);
2615 struct usbnet *usbdev = priv->usbdev;
2616
2617 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2618 rndis_wlan_do_link_up_work(usbdev);
2619
2620 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2621 rndis_wlan_do_link_down_work(usbdev);
2622
2623 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2624 set_multicast_list(usbdev);
2625 }
2626
2627 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2628 {
2629 struct usbnet *usbdev = netdev_priv(dev);
2630 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2631
2632 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2633 return;
2634
2635 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2636 queue_work(priv->workqueue, &priv->work);
2637 }
2638
2639 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2640 struct ndis_80211_status_indication *indication,
2641 int len)
2642 {
2643 u8 *buf;
2644 const char *type;
2645 int flags, buflen, key_id;
2646 bool pairwise_error, group_error;
2647 struct ndis_80211_auth_request *auth_req;
2648 enum nl80211_key_type key_type;
2649
2650 /* must have at least one array entry */
2651 if (len < offsetof(struct ndis_80211_status_indication, u) +
2652 sizeof(struct ndis_80211_auth_request)) {
2653 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2654 len);
2655 return;
2656 }
2657
2658 buf = (void *)&indication->u.auth_request[0];
2659 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2660
2661 while (buflen >= sizeof(*auth_req)) {
2662 auth_req = (void *)buf;
2663 type = "unknown";
2664 flags = le32_to_cpu(auth_req->flags);
2665 pairwise_error = false;
2666 group_error = false;
2667
2668 if (flags & 0x1)
2669 type = "reauth request";
2670 if (flags & 0x2)
2671 type = "key update request";
2672 if (flags & 0x6) {
2673 pairwise_error = true;
2674 type = "pairwise_error";
2675 }
2676 if (flags & 0xe) {
2677 group_error = true;
2678 type = "group_error";
2679 }
2680
2681 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2682 type, le32_to_cpu(auth_req->flags));
2683
2684 if (pairwise_error) {
2685 key_type = NL80211_KEYTYPE_PAIRWISE;
2686 key_id = -1;
2687
2688 cfg80211_michael_mic_failure(usbdev->net,
2689 auth_req->bssid,
2690 key_type, key_id, NULL,
2691 GFP_KERNEL);
2692 }
2693
2694 if (group_error) {
2695 key_type = NL80211_KEYTYPE_GROUP;
2696 key_id = -1;
2697
2698 cfg80211_michael_mic_failure(usbdev->net,
2699 auth_req->bssid,
2700 key_type, key_id, NULL,
2701 GFP_KERNEL);
2702 }
2703
2704 buflen -= le32_to_cpu(auth_req->length);
2705 buf += le32_to_cpu(auth_req->length);
2706 }
2707 }
2708
2709 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2710 struct ndis_80211_status_indication *indication,
2711 int len)
2712 {
2713 struct ndis_80211_pmkid_cand_list *cand_list;
2714 int list_len, expected_len, i;
2715
2716 if (len < offsetof(struct ndis_80211_status_indication, u) +
2717 sizeof(struct ndis_80211_pmkid_cand_list)) {
2718 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2719 len);
2720 return;
2721 }
2722
2723 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2724 sizeof(struct ndis_80211_pmkid_candidate);
2725 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2726 offsetof(struct ndis_80211_status_indication, u);
2727
2728 if (len < expected_len) {
2729 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2730 len, expected_len);
2731 return;
2732 }
2733
2734 cand_list = &indication->u.cand_list;
2735
2736 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2737 le32_to_cpu(cand_list->version),
2738 le32_to_cpu(cand_list->num_candidates));
2739
2740 if (le32_to_cpu(cand_list->version) != 1)
2741 return;
2742
2743 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2744 struct ndis_80211_pmkid_candidate *cand =
2745 &cand_list->candidate_list[i];
2746
2747 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
2748 i, le32_to_cpu(cand->flags), cand->bssid);
2749
2750 #if 0
2751 struct iw_pmkid_cand pcand;
2752 union iwreq_data wrqu;
2753
2754 memset(&pcand, 0, sizeof(pcand));
2755 if (le32_to_cpu(cand->flags) & 0x01)
2756 pcand.flags |= IW_PMKID_CAND_PREAUTH;
2757 pcand.index = i;
2758 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
2759
2760 memset(&wrqu, 0, sizeof(wrqu));
2761 wrqu.data.length = sizeof(pcand);
2762 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
2763 (u8 *)&pcand);
2764 #endif
2765 }
2766 }
2767
2768 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
2769 struct rndis_indicate *msg, int buflen)
2770 {
2771 struct ndis_80211_status_indication *indication;
2772 int len, offset;
2773
2774 offset = offsetof(struct rndis_indicate, status) +
2775 le32_to_cpu(msg->offset);
2776 len = le32_to_cpu(msg->length);
2777
2778 if (len < 8) {
2779 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
2780 len);
2781 return;
2782 }
2783
2784 if (offset + len > buflen) {
2785 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
2786 offset + len, buflen);
2787 return;
2788 }
2789
2790 indication = (void *)((u8 *)msg + offset);
2791
2792 switch (le32_to_cpu(indication->status_type)) {
2793 case NDIS_80211_STATUSTYPE_RADIOSTATE:
2794 netdev_info(usbdev->net, "radio state indication: %i\n",
2795 le32_to_cpu(indication->u.radio_status));
2796 return;
2797
2798 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
2799 netdev_info(usbdev->net, "media stream mode indication: %i\n",
2800 le32_to_cpu(indication->u.media_stream_mode));
2801 return;
2802
2803 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
2804 rndis_wlan_auth_indication(usbdev, indication, len);
2805 return;
2806
2807 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
2808 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
2809 return;
2810
2811 default:
2812 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
2813 le32_to_cpu(indication->status_type));
2814 }
2815 }
2816
2817 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
2818 {
2819 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2820 struct rndis_indicate *msg = ind;
2821
2822 switch (msg->status) {
2823 case RNDIS_STATUS_MEDIA_CONNECT:
2824 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
2825 /* OID_802_11_ADD_KEY causes sometimes extra
2826 * "media connect" indications which confuses driver
2827 * and userspace to think that device is
2828 * roaming/reassociating when it isn't.
2829 */
2830 netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
2831 return;
2832 }
2833
2834 usbnet_pause_rx(usbdev);
2835
2836 netdev_info(usbdev->net, "media connect\n");
2837
2838 /* queue work to avoid recursive calls into rndis_command */
2839 set_bit(WORK_LINK_UP, &priv->work_pending);
2840 queue_work(priv->workqueue, &priv->work);
2841 break;
2842
2843 case RNDIS_STATUS_MEDIA_DISCONNECT:
2844 netdev_info(usbdev->net, "media disconnect\n");
2845
2846 /* queue work to avoid recursive calls into rndis_command */
2847 set_bit(WORK_LINK_DOWN, &priv->work_pending);
2848 queue_work(priv->workqueue, &priv->work);
2849 break;
2850
2851 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
2852 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
2853 break;
2854
2855 default:
2856 netdev_info(usbdev->net, "indication: 0x%08x\n",
2857 le32_to_cpu(msg->status));
2858 break;
2859 }
2860 }
2861
2862 static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
2863 {
2864 struct {
2865 __le32 num_items;
2866 __le32 items[8];
2867 } networks_supported;
2868 struct ndis_80211_capability *caps;
2869 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
2870 int len, retval, i, n;
2871 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2872
2873 /* determine supported modes */
2874 len = sizeof(networks_supported);
2875 retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
2876 &networks_supported, &len);
2877 if (retval >= 0) {
2878 n = le32_to_cpu(networks_supported.num_items);
2879 if (n > 8)
2880 n = 8;
2881 for (i = 0; i < n; i++) {
2882 switch (le32_to_cpu(networks_supported.items[i])) {
2883 case NDIS_80211_TYPE_FREQ_HOP:
2884 case NDIS_80211_TYPE_DIRECT_SEQ:
2885 priv->caps |= CAP_MODE_80211B;
2886 break;
2887 case NDIS_80211_TYPE_OFDM_A:
2888 priv->caps |= CAP_MODE_80211A;
2889 break;
2890 case NDIS_80211_TYPE_OFDM_G:
2891 priv->caps |= CAP_MODE_80211G;
2892 break;
2893 }
2894 }
2895 }
2896
2897 /* get device 802.11 capabilities, number of PMKIDs */
2898 caps = (struct ndis_80211_capability *)caps_buf;
2899 len = sizeof(caps_buf);
2900 retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
2901 if (retval >= 0) {
2902 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
2903 "ver %d, pmkids %d, auth-encr-pairs %d\n",
2904 le32_to_cpu(caps->length),
2905 le32_to_cpu(caps->version),
2906 le32_to_cpu(caps->num_pmkids),
2907 le32_to_cpu(caps->num_auth_encr_pair));
2908 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
2909 } else
2910 wiphy->max_num_pmkids = 0;
2911
2912 return retval;
2913 }
2914
2915 #define DEVICE_POLLER_JIFFIES (HZ)
2916 static void rndis_device_poller(struct work_struct *work)
2917 {
2918 struct rndis_wlan_private *priv =
2919 container_of(work, struct rndis_wlan_private,
2920 dev_poller_work.work);
2921 struct usbnet *usbdev = priv->usbdev;
2922 __le32 rssi, tmp;
2923 int len, ret, j;
2924 int update_jiffies = DEVICE_POLLER_JIFFIES;
2925 void *buf;
2926
2927 /* Only check/do workaround when connected. Calling is_associated()
2928 * also polls device with rndis_command() and catches for media link
2929 * indications.
2930 */
2931 if (!is_associated(usbdev))
2932 goto end;
2933
2934 len = sizeof(rssi);
2935 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2936 if (ret == 0)
2937 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
2938
2939 netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
2940 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
2941
2942 /* Workaround transfer stalls on poor quality links.
2943 * TODO: find right way to fix these stalls (as stalls do not happen
2944 * with ndiswrapper/windows driver). */
2945 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
2946 /* Decrease stats worker interval to catch stalls.
2947 * faster. Faster than 400-500ms causes packet loss,
2948 * Slower doesn't catch stalls fast enough.
2949 */
2950 j = msecs_to_jiffies(priv->param_workaround_interval);
2951 if (j > DEVICE_POLLER_JIFFIES)
2952 j = DEVICE_POLLER_JIFFIES;
2953 else if (j <= 0)
2954 j = 1;
2955 update_jiffies = j;
2956
2957 /* Send scan OID. Use of both OIDs is required to get device
2958 * working.
2959 */
2960 tmp = cpu_to_le32(1);
2961 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
2962 sizeof(tmp));
2963
2964 len = CONTROL_BUFFER_SIZE;
2965 buf = kmalloc(len, GFP_KERNEL);
2966 if (!buf)
2967 goto end;
2968
2969 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
2970 kfree(buf);
2971 }
2972
2973 end:
2974 if (update_jiffies >= HZ)
2975 update_jiffies = round_jiffies_relative(update_jiffies);
2976 else {
2977 j = round_jiffies_relative(update_jiffies);
2978 if (abs(j - update_jiffies) <= 10)
2979 update_jiffies = j;
2980 }
2981
2982 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
2983 update_jiffies);
2984 }
2985
2986 /*
2987 * driver/device initialization
2988 */
2989 static void rndis_copy_module_params(struct usbnet *usbdev)
2990 {
2991 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2992
2993 priv->param_country[0] = modparam_country[0];
2994 priv->param_country[1] = modparam_country[1];
2995 priv->param_country[2] = 0;
2996 priv->param_frameburst = modparam_frameburst;
2997 priv->param_afterburner = modparam_afterburner;
2998 priv->param_power_save = modparam_power_save;
2999 priv->param_power_output = modparam_power_output;
3000 priv->param_roamtrigger = modparam_roamtrigger;
3001 priv->param_roamdelta = modparam_roamdelta;
3002
3003 priv->param_country[0] = toupper(priv->param_country[0]);
3004 priv->param_country[1] = toupper(priv->param_country[1]);
3005 /* doesn't support EU as country code, use FI instead */
3006 if (!strcmp(priv->param_country, "EU"))
3007 strcpy(priv->param_country, "FI");
3008
3009 if (priv->param_power_save < 0)
3010 priv->param_power_save = 0;
3011 else if (priv->param_power_save > 2)
3012 priv->param_power_save = 2;
3013
3014 if (priv->param_power_output < 0)
3015 priv->param_power_output = 0;
3016 else if (priv->param_power_output > 3)
3017 priv->param_power_output = 3;
3018
3019 if (priv->param_roamtrigger < -80)
3020 priv->param_roamtrigger = -80;
3021 else if (priv->param_roamtrigger > -60)
3022 priv->param_roamtrigger = -60;
3023
3024 if (priv->param_roamdelta < 0)
3025 priv->param_roamdelta = 0;
3026 else if (priv->param_roamdelta > 2)
3027 priv->param_roamdelta = 2;
3028
3029 if (modparam_workaround_interval < 0)
3030 priv->param_workaround_interval = 500;
3031 else
3032 priv->param_workaround_interval = modparam_workaround_interval;
3033 }
3034
3035 static int bcm4320a_early_init(struct usbnet *usbdev)
3036 {
3037 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3038 * and workaround parameter is copied to private structure correctly.
3039 */
3040 rndis_copy_module_params(usbdev);
3041
3042 /* bcm4320a doesn't handle configuration parameters well. Try
3043 * set any and you get partially zeroed mac and broken device.
3044 */
3045
3046 return 0;
3047 }
3048
3049 static int bcm4320b_early_init(struct usbnet *usbdev)
3050 {
3051 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3052 char buf[8];
3053
3054 rndis_copy_module_params(usbdev);
3055
3056 /* Early initialization settings, setting these won't have effect
3057 * if called after generic_rndis_bind().
3058 */
3059
3060 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3061 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3062 priv->param_frameburst ? "1" : "0");
3063 rndis_set_config_parameter_str(usbdev, "Afterburner",
3064 priv->param_afterburner ? "1" : "0");
3065 sprintf(buf, "%d", priv->param_power_save);
3066 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3067 sprintf(buf, "%d", priv->param_power_output);
3068 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3069 sprintf(buf, "%d", priv->param_roamtrigger);
3070 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3071 sprintf(buf, "%d", priv->param_roamdelta);
3072 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3073
3074 return 0;
3075 }
3076
3077 /* same as rndis_netdev_ops but with local multicast handler */
3078 static const struct net_device_ops rndis_wlan_netdev_ops = {
3079 .ndo_open = usbnet_open,
3080 .ndo_stop = usbnet_stop,
3081 .ndo_start_xmit = usbnet_start_xmit,
3082 .ndo_tx_timeout = usbnet_tx_timeout,
3083 .ndo_set_mac_address = eth_mac_addr,
3084 .ndo_validate_addr = eth_validate_addr,
3085 .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
3086 };
3087
3088 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3089 {
3090 struct wiphy *wiphy;
3091 struct rndis_wlan_private *priv;
3092 int retval, len;
3093 __le32 tmp;
3094
3095 /* allocate wiphy and rndis private data
3096 * NOTE: We only support a single virtual interface, so wiphy
3097 * and wireless_dev are somewhat synonymous for this device.
3098 */
3099 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3100 if (!wiphy)
3101 return -ENOMEM;
3102
3103 priv = wiphy_priv(wiphy);
3104 usbdev->net->ieee80211_ptr = &priv->wdev;
3105 priv->wdev.wiphy = wiphy;
3106 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3107
3108 /* These have to be initialized before calling generic_rndis_bind().
3109 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3110 */
3111 usbdev->driver_priv = priv;
3112 priv->usbdev = usbdev;
3113
3114 mutex_init(&priv->command_lock);
3115
3116 /* because rndis_command() sleeps we need to use workqueue */
3117 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3118 INIT_WORK(&priv->work, rndis_wlan_worker);
3119 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3120 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3121
3122 /* try bind rndis_host */
3123 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3124 if (retval < 0)
3125 goto fail;
3126
3127 /* generic_rndis_bind set packet filter to multicast_all+
3128 * promisc mode which doesn't work well for our devices (device
3129 * picks up rssi to closest station instead of to access point).
3130 *
3131 * rndis_host wants to avoid all OID as much as possible
3132 * so do promisc/multicast handling in rndis_wlan.
3133 */
3134 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3135
3136 tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3137 retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3138 sizeof(tmp));
3139
3140 len = sizeof(tmp);
3141 retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3142 &len);
3143 priv->multicast_size = le32_to_cpu(tmp);
3144 if (retval < 0 || priv->multicast_size < 0)
3145 priv->multicast_size = 0;
3146 if (priv->multicast_size > 0)
3147 usbdev->net->flags |= IFF_MULTICAST;
3148 else
3149 usbdev->net->flags &= ~IFF_MULTICAST;
3150
3151 /* fill-out wiphy structure and register w/ cfg80211 */
3152 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3153 wiphy->privid = rndis_wiphy_privid;
3154 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3155 | BIT(NL80211_IFTYPE_ADHOC);
3156 wiphy->max_scan_ssids = 1;
3157
3158 /* TODO: fill-out band/encr information based on priv->caps */
3159 rndis_wlan_get_caps(usbdev, wiphy);
3160
3161 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3162 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3163 priv->band.channels = priv->channels;
3164 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3165 priv->band.bitrates = priv->rates;
3166 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3167 wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3168 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3169
3170 memcpy(priv->cipher_suites, rndis_cipher_suites,
3171 sizeof(rndis_cipher_suites));
3172 wiphy->cipher_suites = priv->cipher_suites;
3173 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3174
3175 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3176
3177 if (wiphy_register(wiphy)) {
3178 retval = -ENODEV;
3179 goto fail;
3180 }
3181
3182 set_default_iw_params(usbdev);
3183
3184 /* set default rts/frag */
3185 rndis_set_wiphy_params(wiphy,
3186 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3187
3188 /* turn radio on */
3189 priv->radio_on = true;
3190 disassociate(usbdev, true);
3191 netif_carrier_off(usbdev->net);
3192
3193 return 0;
3194
3195 fail:
3196 cancel_delayed_work_sync(&priv->dev_poller_work);
3197 cancel_delayed_work_sync(&priv->scan_work);
3198 cancel_work_sync(&priv->work);
3199 flush_workqueue(priv->workqueue);
3200 destroy_workqueue(priv->workqueue);
3201
3202 wiphy_free(wiphy);
3203 return retval;
3204 }
3205
3206 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3207 {
3208 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3209
3210 /* turn radio off */
3211 disassociate(usbdev, false);
3212
3213 cancel_delayed_work_sync(&priv->dev_poller_work);
3214 cancel_delayed_work_sync(&priv->scan_work);
3215 cancel_work_sync(&priv->work);
3216 flush_workqueue(priv->workqueue);
3217 destroy_workqueue(priv->workqueue);
3218
3219 rndis_unbind(usbdev, intf);
3220
3221 wiphy_unregister(priv->wdev.wiphy);
3222 wiphy_free(priv->wdev.wiphy);
3223 }
3224
3225 static int rndis_wlan_reset(struct usbnet *usbdev)
3226 {
3227 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3228 int retval;
3229
3230 netdev_dbg(usbdev->net, "%s()\n", __func__);
3231
3232 retval = rndis_reset(usbdev);
3233 if (retval)
3234 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3235
3236 /* rndis_reset cleared multicast list, so restore here.
3237 (set_multicast_list() also turns on current packet filter) */
3238 set_multicast_list(usbdev);
3239
3240 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3241 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3242
3243 return deauthenticate(usbdev);
3244 }
3245
3246 static int rndis_wlan_stop(struct usbnet *usbdev)
3247 {
3248 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3249 int retval;
3250 __le32 filter;
3251
3252 netdev_dbg(usbdev->net, "%s()\n", __func__);
3253
3254 retval = disassociate(usbdev, false);
3255
3256 priv->work_pending = 0;
3257 cancel_delayed_work_sync(&priv->dev_poller_work);
3258 cancel_delayed_work_sync(&priv->scan_work);
3259 cancel_work_sync(&priv->work);
3260 flush_workqueue(priv->workqueue);
3261
3262 if (priv->scan_request) {
3263 cfg80211_scan_done(priv->scan_request, true);
3264 priv->scan_request = NULL;
3265 }
3266
3267 /* Set current packet filter zero to block receiving data packets from
3268 device. */
3269 filter = 0;
3270 rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3271 sizeof(filter));
3272
3273 return retval;
3274 }
3275
3276 static const struct driver_info bcm4320b_info = {
3277 .description = "Wireless RNDIS device, BCM4320b based",
3278 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3279 FLAG_AVOID_UNLINK_URBS,
3280 .bind = rndis_wlan_bind,
3281 .unbind = rndis_wlan_unbind,
3282 .status = rndis_status,
3283 .rx_fixup = rndis_rx_fixup,
3284 .tx_fixup = rndis_tx_fixup,
3285 .reset = rndis_wlan_reset,
3286 .stop = rndis_wlan_stop,
3287 .early_init = bcm4320b_early_init,
3288 .indication = rndis_wlan_indication,
3289 };
3290
3291 static const struct driver_info bcm4320a_info = {
3292 .description = "Wireless RNDIS device, BCM4320a based",
3293 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3294 FLAG_AVOID_UNLINK_URBS,
3295 .bind = rndis_wlan_bind,
3296 .unbind = rndis_wlan_unbind,
3297 .status = rndis_status,
3298 .rx_fixup = rndis_rx_fixup,
3299 .tx_fixup = rndis_tx_fixup,
3300 .reset = rndis_wlan_reset,
3301 .stop = rndis_wlan_stop,
3302 .early_init = bcm4320a_early_init,
3303 .indication = rndis_wlan_indication,
3304 };
3305
3306 static const struct driver_info rndis_wlan_info = {
3307 .description = "Wireless RNDIS device",
3308 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3309 FLAG_AVOID_UNLINK_URBS,
3310 .bind = rndis_wlan_bind,
3311 .unbind = rndis_wlan_unbind,
3312 .status = rndis_status,
3313 .rx_fixup = rndis_rx_fixup,
3314 .tx_fixup = rndis_tx_fixup,
3315 .reset = rndis_wlan_reset,
3316 .stop = rndis_wlan_stop,
3317 .early_init = bcm4320a_early_init,
3318 .indication = rndis_wlan_indication,
3319 };
3320
3321 /*-------------------------------------------------------------------------*/
3322
3323 static const struct usb_device_id products [] = {
3324 #define RNDIS_MASTER_INTERFACE \
3325 .bInterfaceClass = USB_CLASS_COMM, \
3326 .bInterfaceSubClass = 2 /* ACM */, \
3327 .bInterfaceProtocol = 0x0ff
3328
3329 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3330 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3331 */
3332 {
3333 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3334 | USB_DEVICE_ID_MATCH_DEVICE,
3335 .idVendor = 0x0411,
3336 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3337 RNDIS_MASTER_INTERFACE,
3338 .driver_info = (unsigned long) &bcm4320b_info,
3339 }, {
3340 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3341 | USB_DEVICE_ID_MATCH_DEVICE,
3342 .idVendor = 0x0baf,
3343 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3344 RNDIS_MASTER_INTERFACE,
3345 .driver_info = (unsigned long) &bcm4320b_info,
3346 }, {
3347 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3348 | USB_DEVICE_ID_MATCH_DEVICE,
3349 .idVendor = 0x050d,
3350 .idProduct = 0x011b, /* Belkin F5D7051 */
3351 RNDIS_MASTER_INTERFACE,
3352 .driver_info = (unsigned long) &bcm4320b_info,
3353 }, {
3354 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3355 | USB_DEVICE_ID_MATCH_DEVICE,
3356 .idVendor = 0x1799, /* Belkin has two vendor ids */
3357 .idProduct = 0x011b, /* Belkin F5D7051 */
3358 RNDIS_MASTER_INTERFACE,
3359 .driver_info = (unsigned long) &bcm4320b_info,
3360 }, {
3361 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3362 | USB_DEVICE_ID_MATCH_DEVICE,
3363 .idVendor = 0x13b1,
3364 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3365 RNDIS_MASTER_INTERFACE,
3366 .driver_info = (unsigned long) &bcm4320b_info,
3367 }, {
3368 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3369 | USB_DEVICE_ID_MATCH_DEVICE,
3370 .idVendor = 0x13b1,
3371 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3372 RNDIS_MASTER_INTERFACE,
3373 .driver_info = (unsigned long) &bcm4320b_info,
3374 }, {
3375 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3376 | USB_DEVICE_ID_MATCH_DEVICE,
3377 .idVendor = 0x0b05,
3378 .idProduct = 0x1717, /* Asus WL169gE */
3379 RNDIS_MASTER_INTERFACE,
3380 .driver_info = (unsigned long) &bcm4320b_info,
3381 }, {
3382 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3383 | USB_DEVICE_ID_MATCH_DEVICE,
3384 .idVendor = 0x0a5c,
3385 .idProduct = 0xd11b, /* Eminent EM4045 */
3386 RNDIS_MASTER_INTERFACE,
3387 .driver_info = (unsigned long) &bcm4320b_info,
3388 }, {
3389 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3390 | USB_DEVICE_ID_MATCH_DEVICE,
3391 .idVendor = 0x1690,
3392 .idProduct = 0x0715, /* BT Voyager 1055 */
3393 RNDIS_MASTER_INTERFACE,
3394 .driver_info = (unsigned long) &bcm4320b_info,
3395 },
3396 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3397 * parameters available, hardware probably contain older firmware version with
3398 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3399 */
3400 {
3401 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3402 | USB_DEVICE_ID_MATCH_DEVICE,
3403 .idVendor = 0x13b1,
3404 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3405 RNDIS_MASTER_INTERFACE,
3406 .driver_info = (unsigned long) &bcm4320a_info,
3407 }, {
3408 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3409 | USB_DEVICE_ID_MATCH_DEVICE,
3410 .idVendor = 0x0baf,
3411 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3412 RNDIS_MASTER_INTERFACE,
3413 .driver_info = (unsigned long) &bcm4320a_info,
3414 }, {
3415 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3416 | USB_DEVICE_ID_MATCH_DEVICE,
3417 .idVendor = 0x0411,
3418 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3419 RNDIS_MASTER_INTERFACE,
3420 .driver_info = (unsigned long) &bcm4320a_info,
3421 },
3422 /* Generic Wireless RNDIS devices that we don't have exact
3423 * idVendor/idProduct/chip yet.
3424 */
3425 {
3426 /* RNDIS is MSFT's un-official variant of CDC ACM */
3427 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3428 .driver_info = (unsigned long) &rndis_wlan_info,
3429 }, {
3430 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3431 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3432 .driver_info = (unsigned long) &rndis_wlan_info,
3433 },
3434 { }, // END
3435 };
3436 MODULE_DEVICE_TABLE(usb, products);
3437
3438 static struct usb_driver rndis_wlan_driver = {
3439 .name = "rndis_wlan",
3440 .id_table = products,
3441 .probe = usbnet_probe,
3442 .disconnect = usbnet_disconnect,
3443 .suspend = usbnet_suspend,
3444 .resume = usbnet_resume,
3445 };
3446
3447 static int __init rndis_wlan_init(void)
3448 {
3449 return usb_register(&rndis_wlan_driver);
3450 }
3451 module_init(rndis_wlan_init);
3452
3453 static void __exit rndis_wlan_exit(void)
3454 {
3455 usb_deregister(&rndis_wlan_driver);
3456 }
3457 module_exit(rndis_wlan_exit);
3458
3459 MODULE_AUTHOR("Bjorge Dijkstra");
3460 MODULE_AUTHOR("Jussi Kivilinna");
3461 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3462 MODULE_LICENSE("GPL");
3463
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree