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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 */
52static char modparam_country[4] = "EU";
53module_param_string(country, modparam_country, 4, 0444);
54MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
55
56static int modparam_frameburst = 1;
57module_param_named(frameburst, modparam_frameburst, int, 0444);
58MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
59
60static int modparam_afterburner = 0;
61module_param_named(afterburner, modparam_afterburner, int, 0444);
62MODULE_PARM_DESC(afterburner,
63 "enable afterburner aka '125 High Speed Mode' (default: off)");
64
65static int modparam_power_save = 0;
66module_param_named(power_save, modparam_power_save, int, 0444);
67MODULE_PARM_DESC(power_save,
68 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
69
70static int modparam_power_output = 3;
71module_param_named(power_output, modparam_power_output, int, 0444);
72MODULE_PARM_DESC(power_output,
73 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
74
75static int modparam_roamtrigger = -70;
76module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
77MODULE_PARM_DESC(roamtrigger,
78 "set roaming dBm trigger: -80=optimize for distance, "
79 "-60=bandwidth (default: -70)");
80
81static int modparam_roamdelta = 1;
82module_param_named(roamdelta, modparam_roamdelta, int, 0444);
83MODULE_PARM_DESC(roamdelta,
84 "set roaming tendency: 0=aggressive, 1=moderate, "
85 "2=conservative (default: moderate)");
86
87static int modparam_workaround_interval;
88module_param_named(workaround_interval, modparam_workaround_interval,
89 int, 0444);
90MODULE_PARM_DESC(workaround_interval,
91 "set stall workaround interval in msecs (0=disabled) (default: 0)");
92
93
94/* various RNDIS OID defs */
95#define OID_GEN_LINK_SPEED cpu_to_le32(0x00010107)
96#define OID_GEN_RNDIS_CONFIG_PARAMETER cpu_to_le32(0x0001021b)
97
98#define OID_GEN_XMIT_OK cpu_to_le32(0x00020101)
99#define OID_GEN_RCV_OK cpu_to_le32(0x00020102)
100#define OID_GEN_XMIT_ERROR cpu_to_le32(0x00020103)
101#define OID_GEN_RCV_ERROR cpu_to_le32(0x00020104)
102#define OID_GEN_RCV_NO_BUFFER cpu_to_le32(0x00020105)
103
104#define OID_802_3_CURRENT_ADDRESS cpu_to_le32(0x01010102)
105#define OID_802_3_MULTICAST_LIST cpu_to_le32(0x01010103)
106#define OID_802_3_MAXIMUM_LIST_SIZE cpu_to_le32(0x01010104)
107
108#define OID_802_11_BSSID cpu_to_le32(0x0d010101)
109#define OID_802_11_SSID cpu_to_le32(0x0d010102)
110#define OID_802_11_INFRASTRUCTURE_MODE cpu_to_le32(0x0d010108)
111#define OID_802_11_ADD_WEP cpu_to_le32(0x0d010113)
112#define OID_802_11_REMOVE_WEP cpu_to_le32(0x0d010114)
113#define OID_802_11_DISASSOCIATE cpu_to_le32(0x0d010115)
114#define OID_802_11_AUTHENTICATION_MODE cpu_to_le32(0x0d010118)
115#define OID_802_11_PRIVACY_FILTER cpu_to_le32(0x0d010119)
116#define OID_802_11_BSSID_LIST_SCAN cpu_to_le32(0x0d01011a)
117#define OID_802_11_ENCRYPTION_STATUS cpu_to_le32(0x0d01011b)
118#define OID_802_11_ADD_KEY cpu_to_le32(0x0d01011d)
119#define OID_802_11_REMOVE_KEY cpu_to_le32(0x0d01011e)
120#define OID_802_11_ASSOCIATION_INFORMATION cpu_to_le32(0x0d01011f)
121#define OID_802_11_CAPABILITY cpu_to_le32(0x0d010122)
122#define OID_802_11_PMKID cpu_to_le32(0x0d010123)
123#define OID_802_11_NETWORK_TYPES_SUPPORTED cpu_to_le32(0x0d010203)
124#define OID_802_11_NETWORK_TYPE_IN_USE cpu_to_le32(0x0d010204)
125#define OID_802_11_TX_POWER_LEVEL cpu_to_le32(0x0d010205)
126#define OID_802_11_RSSI cpu_to_le32(0x0d010206)
127#define OID_802_11_RSSI_TRIGGER cpu_to_le32(0x0d010207)
128#define OID_802_11_FRAGMENTATION_THRESHOLD cpu_to_le32(0x0d010209)
129#define OID_802_11_RTS_THRESHOLD cpu_to_le32(0x0d01020a)
130#define OID_802_11_SUPPORTED_RATES cpu_to_le32(0x0d01020e)
131#define OID_802_11_CONFIGURATION cpu_to_le32(0x0d010211)
132#define OID_802_11_POWER_MODE cpu_to_le32(0x0d010216)
133#define OID_802_11_BSSID_LIST cpu_to_le32(0x0d010217)
134
135
136/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
137#define WL_NOISE -96 /* typical noise level in dBm */
138#define WL_SIGMAX -32 /* typical maximum signal level in dBm */
139
140
141/* Assume that Broadcom 4320 (only chipset at time of writing known to be
142 * based on wireless rndis) has default txpower of 13dBm.
143 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
144 * 100% : 20 mW ~ 13dBm
145 * 75% : 15 mW ~ 12dBm
146 * 50% : 10 mW ~ 10dBm
147 * 25% : 5 mW ~ 7dBm
148 */
149#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
150#define BCM4320_DEFAULT_TXPOWER_DBM_75 12
151#define BCM4320_DEFAULT_TXPOWER_DBM_50 10
152#define BCM4320_DEFAULT_TXPOWER_DBM_25 7
153
154
155/* codes for "status" field of completion messages */
156#define RNDIS_STATUS_ADAPTER_NOT_READY cpu_to_le32(0xc0010011)
157#define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012)
158
159
160/* Known device types */
161#define RNDIS_UNKNOWN 0
162#define RNDIS_BCM4320A 1
163#define RNDIS_BCM4320B 2
164
165
166/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
167 * slightly modified for datatype endianess, etc
168 */
169#define NDIS_802_11_LENGTH_SSID 32
170#define NDIS_802_11_LENGTH_RATES 8
171#define NDIS_802_11_LENGTH_RATES_EX 16
172
173enum ndis_80211_net_type {
174 NDIS_80211_TYPE_FREQ_HOP,
175 NDIS_80211_TYPE_DIRECT_SEQ,
176 NDIS_80211_TYPE_OFDM_A,
177 NDIS_80211_TYPE_OFDM_G
178};
179
180enum ndis_80211_net_infra {
181 NDIS_80211_INFRA_ADHOC,
182 NDIS_80211_INFRA_INFRA,
183 NDIS_80211_INFRA_AUTO_UNKNOWN
184};
185
186enum ndis_80211_auth_mode {
187 NDIS_80211_AUTH_OPEN,
188 NDIS_80211_AUTH_SHARED,
189 NDIS_80211_AUTH_AUTO_SWITCH,
190 NDIS_80211_AUTH_WPA,
191 NDIS_80211_AUTH_WPA_PSK,
192 NDIS_80211_AUTH_WPA_NONE,
193 NDIS_80211_AUTH_WPA2,
194 NDIS_80211_AUTH_WPA2_PSK
195};
196
197enum ndis_80211_encr_status {
198 NDIS_80211_ENCR_WEP_ENABLED,
199 NDIS_80211_ENCR_DISABLED,
200 NDIS_80211_ENCR_WEP_KEY_ABSENT,
201 NDIS_80211_ENCR_NOT_SUPPORTED,
202 NDIS_80211_ENCR_TKIP_ENABLED,
203 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
204 NDIS_80211_ENCR_CCMP_ENABLED,
205 NDIS_80211_ENCR_CCMP_KEY_ABSENT
206};
207
208enum ndis_80211_priv_filter {
209 NDIS_80211_PRIV_ACCEPT_ALL,
210 NDIS_80211_PRIV_8021X_WEP
211};
212
213enum ndis_80211_status_type {
214 NDIS_80211_STATUSTYPE_AUTHENTICATION,
215 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
216 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
217 NDIS_80211_STATUSTYPE_RADIOSTATE,
218};
219
220enum ndis_80211_media_stream_mode {
221 NDIS_80211_MEDIA_STREAM_OFF,
222 NDIS_80211_MEDIA_STREAM_ON
223};
224
225enum ndis_80211_radio_status {
226 NDIS_80211_RADIO_STATUS_ON,
227 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
228 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
229};
230
231enum ndis_80211_addkey_bits {
232 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
233 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
234 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
235 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
236};
237
238enum ndis_80211_addwep_bits {
239 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
240 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
241};
242
243enum ndis_80211_power_mode {
244 NDIS_80211_POWER_MODE_CAM,
245 NDIS_80211_POWER_MODE_MAX_PSP,
246 NDIS_80211_POWER_MODE_FAST_PSP,
247};
248
249struct ndis_80211_auth_request {
250 __le32 length;
251 u8 bssid[6];
252 u8 padding[2];
253 __le32 flags;
254} __packed;
255
256struct ndis_80211_pmkid_candidate {
257 u8 bssid[6];
258 u8 padding[2];
259 __le32 flags;
260} __packed;
261
262struct ndis_80211_pmkid_cand_list {
263 __le32 version;
264 __le32 num_candidates;
265 struct ndis_80211_pmkid_candidate candidate_list[0];
266} __packed;
267
268struct ndis_80211_status_indication {
269 __le32 status_type;
270 union {
271 __le32 media_stream_mode;
272 __le32 radio_status;
273 struct ndis_80211_auth_request auth_request[0];
274 struct ndis_80211_pmkid_cand_list cand_list;
275 } u;
276} __packed;
277
278struct ndis_80211_ssid {
279 __le32 length;
280 u8 essid[NDIS_802_11_LENGTH_SSID];
281} __packed;
282
283struct ndis_80211_conf_freq_hop {
284 __le32 length;
285 __le32 hop_pattern;
286 __le32 hop_set;
287 __le32 dwell_time;
288} __packed;
289
290struct ndis_80211_conf {
291 __le32 length;
292 __le32 beacon_period;
293 __le32 atim_window;
294 __le32 ds_config;
295 struct ndis_80211_conf_freq_hop fh_config;
296} __packed;
297
298struct ndis_80211_bssid_ex {
299 __le32 length;
300 u8 mac[6];
301 u8 padding[2];
302 struct ndis_80211_ssid ssid;
303 __le32 privacy;
304 __le32 rssi;
305 __le32 net_type;
306 struct ndis_80211_conf config;
307 __le32 net_infra;
308 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
309 __le32 ie_length;
310 u8 ies[0];
311} __packed;
312
313struct ndis_80211_bssid_list_ex {
314 __le32 num_items;
315 struct ndis_80211_bssid_ex bssid[0];
316} __packed;
317
318struct ndis_80211_fixed_ies {
319 u8 timestamp[8];
320 __le16 beacon_interval;
321 __le16 capabilities;
322} __packed;
323
324struct ndis_80211_wep_key {
325 __le32 size;
326 __le32 index;
327 __le32 length;
328 u8 material[32];
329} __packed;
330
331struct ndis_80211_key {
332 __le32 size;
333 __le32 index;
334 __le32 length;
335 u8 bssid[6];
336 u8 padding[6];
337 u8 rsc[8];
338 u8 material[32];
339} __packed;
340
341struct ndis_80211_remove_key {
342 __le32 size;
343 __le32 index;
344 u8 bssid[6];
345 u8 padding[2];
346} __packed;
347
348struct ndis_config_param {
349 __le32 name_offs;
350 __le32 name_length;
351 __le32 type;
352 __le32 value_offs;
353 __le32 value_length;
354} __packed;
355
356struct ndis_80211_assoc_info {
357 __le32 length;
358 __le16 req_ies;
359 struct req_ie {
360 __le16 capa;
361 __le16 listen_interval;
362 u8 cur_ap_address[6];
363 } req_ie;
364 __le32 req_ie_length;
365 __le32 offset_req_ies;
366 __le16 resp_ies;
367 struct resp_ie {
368 __le16 capa;
369 __le16 status_code;
370 __le16 assoc_id;
371 } resp_ie;
372 __le32 resp_ie_length;
373 __le32 offset_resp_ies;
374} __packed;
375
376struct ndis_80211_auth_encr_pair {
377 __le32 auth_mode;
378 __le32 encr_mode;
379} __packed;
380
381struct ndis_80211_capability {
382 __le32 length;
383 __le32 version;
384 __le32 num_pmkids;
385 __le32 num_auth_encr_pair;
386 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
387} __packed;
388
389struct ndis_80211_bssid_info {
390 u8 bssid[6];
391 u8 pmkid[16];
392};
393
394struct ndis_80211_pmkid {
395 __le32 length;
396 __le32 bssid_info_count;
397 struct ndis_80211_bssid_info bssid_info[0];
398};
399
400/*
401 * private data
402 */
403#define NET_TYPE_11FB 0
404
405#define CAP_MODE_80211A 1
406#define CAP_MODE_80211B 2
407#define CAP_MODE_80211G 4
408#define CAP_MODE_MASK 7
409
410#define WORK_LINK_UP (1<<0)
411#define WORK_LINK_DOWN (1<<1)
412#define WORK_SET_MULTICAST_LIST (1<<2)
413
414#define RNDIS_WLAN_ALG_NONE 0
415#define RNDIS_WLAN_ALG_WEP (1<<0)
416#define RNDIS_WLAN_ALG_TKIP (1<<1)
417#define RNDIS_WLAN_ALG_CCMP (1<<2)
418
419#define RNDIS_WLAN_KEY_MGMT_NONE 0
420#define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
421#define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
422
423#define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
424
425static const struct ieee80211_channel rndis_channels[] = {
426 { .center_freq = 2412 },
427 { .center_freq = 2417 },
428 { .center_freq = 2422 },
429 { .center_freq = 2427 },
430 { .center_freq = 2432 },
431 { .center_freq = 2437 },
432 { .center_freq = 2442 },
433 { .center_freq = 2447 },
434 { .center_freq = 2452 },
435 { .center_freq = 2457 },
436 { .center_freq = 2462 },
437 { .center_freq = 2467 },
438 { .center_freq = 2472 },
439 { .center_freq = 2484 },
440};
441
442static const struct ieee80211_rate rndis_rates[] = {
443 { .bitrate = 10 },
444 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
445 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
446 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
447 { .bitrate = 60 },
448 { .bitrate = 90 },
449 { .bitrate = 120 },
450 { .bitrate = 180 },
451 { .bitrate = 240 },
452 { .bitrate = 360 },
453 { .bitrate = 480 },
454 { .bitrate = 540 }
455};
456
457static const u32 rndis_cipher_suites[] = {
458 WLAN_CIPHER_SUITE_WEP40,
459 WLAN_CIPHER_SUITE_WEP104,
460 WLAN_CIPHER_SUITE_TKIP,
461 WLAN_CIPHER_SUITE_CCMP,
462};
463
464struct rndis_wlan_encr_key {
465 int len;
466 u32 cipher;
467 u8 material[32];
468 u8 bssid[ETH_ALEN];
469 bool pairwise;
470 bool tx_key;
471};
472
473/* RNDIS device private data */
474struct rndis_wlan_private {
475 struct usbnet *usbdev;
476
477 struct wireless_dev wdev;
478
479 struct cfg80211_scan_request *scan_request;
480
481 struct workqueue_struct *workqueue;
482 struct delayed_work dev_poller_work;
483 struct delayed_work scan_work;
484 struct work_struct work;
485 struct mutex command_lock;
486 unsigned long work_pending;
487 int last_qual;
488 s32 cqm_rssi_thold;
489 u32 cqm_rssi_hyst;
490 int last_cqm_event_rssi;
491
492 struct ieee80211_supported_band band;
493 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
494 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
495 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
496
497 int device_type;
498 int caps;
499 int multicast_size;
500
501 /* module parameters */
502 char param_country[4];
503 int param_frameburst;
504 int param_afterburner;
505 int param_power_save;
506 int param_power_output;
507 int param_roamtrigger;
508 int param_roamdelta;
509 u32 param_workaround_interval;
510
511 /* hardware state */
512 bool radio_on;
513 int power_mode;
514 int infra_mode;
515 bool connected;
516 u8 bssid[ETH_ALEN];
517 __le32 current_command_oid;
518
519 /* encryption stuff */
520 int encr_tx_key_index;
521 struct rndis_wlan_encr_key encr_keys[4];
522 int wpa_version;
523
524 u8 command_buffer[COMMAND_BUFFER_SIZE];
525};
526
527/*
528 * cfg80211 ops
529 */
530static int rndis_change_virtual_intf(struct wiphy *wiphy,
531 struct net_device *dev,
532 enum nl80211_iftype type, u32 *flags,
533 struct vif_params *params);
534
535static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
536 struct cfg80211_scan_request *request);
537
538static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
539
540static int rndis_set_tx_power(struct wiphy *wiphy,
541 enum nl80211_tx_power_setting type,
542 int mbm);
543static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
544
545static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
546 struct cfg80211_connect_params *sme);
547
548static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
549 u16 reason_code);
550
551static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
552 struct cfg80211_ibss_params *params);
553
554static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
555
556static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
557 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
558
559static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
560 u8 key_index, bool pairwise, const u8 *mac_addr,
561 struct key_params *params);
562
563static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
564 u8 key_index, bool pairwise, const u8 *mac_addr);
565
566static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
567 u8 key_index, bool unicast, bool multicast);
568
569static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
570 u8 *mac, struct station_info *sinfo);
571
572static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
573 int idx, u8 *mac, struct station_info *sinfo);
574
575static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
576 struct cfg80211_pmksa *pmksa);
577
578static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
579 struct cfg80211_pmksa *pmksa);
580
581static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
582
583static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
584 bool enabled, int timeout);
585
586static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
587 struct net_device *dev,
588 s32 rssi_thold, u32 rssi_hyst);
589
590static const struct cfg80211_ops rndis_config_ops = {
591 .change_virtual_intf = rndis_change_virtual_intf,
592 .scan = rndis_scan,
593 .set_wiphy_params = rndis_set_wiphy_params,
594 .set_tx_power = rndis_set_tx_power,
595 .get_tx_power = rndis_get_tx_power,
596 .connect = rndis_connect,
597 .disconnect = rndis_disconnect,
598 .join_ibss = rndis_join_ibss,
599 .leave_ibss = rndis_leave_ibss,
600 .set_channel = rndis_set_channel,
601 .add_key = rndis_add_key,
602 .del_key = rndis_del_key,
603 .set_default_key = rndis_set_default_key,
604 .get_station = rndis_get_station,
605 .dump_station = rndis_dump_station,
606 .set_pmksa = rndis_set_pmksa,
607 .del_pmksa = rndis_del_pmksa,
608 .flush_pmksa = rndis_flush_pmksa,
609 .set_power_mgmt = rndis_set_power_mgmt,
610 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
611};
612
613static void *rndis_wiphy_privid = &rndis_wiphy_privid;
614
615
616static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
617{
618 return (struct rndis_wlan_private *)dev->driver_priv;
619}
620
621static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
622{
623 switch (priv->param_power_output) {
624 default:
625 case 3:
626 return BCM4320_DEFAULT_TXPOWER_DBM_100;
627 case 2:
628 return BCM4320_DEFAULT_TXPOWER_DBM_75;
629 case 1:
630 return BCM4320_DEFAULT_TXPOWER_DBM_50;
631 case 0:
632 return BCM4320_DEFAULT_TXPOWER_DBM_25;
633 }
634}
635
636static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
637{
638 int cipher = priv->encr_keys[idx].cipher;
639
640 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
641 cipher == WLAN_CIPHER_SUITE_TKIP);
642}
643
644static int rndis_cipher_to_alg(u32 cipher)
645{
646 switch (cipher) {
647 default:
648 return RNDIS_WLAN_ALG_NONE;
649 case WLAN_CIPHER_SUITE_WEP40:
650 case WLAN_CIPHER_SUITE_WEP104:
651 return RNDIS_WLAN_ALG_WEP;
652 case WLAN_CIPHER_SUITE_TKIP:
653 return RNDIS_WLAN_ALG_TKIP;
654 case WLAN_CIPHER_SUITE_CCMP:
655 return RNDIS_WLAN_ALG_CCMP;
656 }
657}
658
659static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
660{
661 switch (akm_suite) {
662 default:
663 return RNDIS_WLAN_KEY_MGMT_NONE;
664 case WLAN_AKM_SUITE_8021X:
665 return RNDIS_WLAN_KEY_MGMT_802_1X;
666 case WLAN_AKM_SUITE_PSK:
667 return RNDIS_WLAN_KEY_MGMT_PSK;
668 }
669}
670
671#ifdef DEBUG
672static const char *oid_to_string(__le32 oid)
673{
674 switch (oid) {
675#define OID_STR(oid) case oid: return(#oid)
676 /* from rndis_host.h */
677 OID_STR(OID_802_3_PERMANENT_ADDRESS);
678 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
679 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
680 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
681
682 /* from rndis_wlan.c */
683 OID_STR(OID_GEN_LINK_SPEED);
684 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
685
686 OID_STR(OID_GEN_XMIT_OK);
687 OID_STR(OID_GEN_RCV_OK);
688 OID_STR(OID_GEN_XMIT_ERROR);
689 OID_STR(OID_GEN_RCV_ERROR);
690 OID_STR(OID_GEN_RCV_NO_BUFFER);
691
692 OID_STR(OID_802_3_CURRENT_ADDRESS);
693 OID_STR(OID_802_3_MULTICAST_LIST);
694 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
695
696 OID_STR(OID_802_11_BSSID);
697 OID_STR(OID_802_11_SSID);
698 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
699 OID_STR(OID_802_11_ADD_WEP);
700 OID_STR(OID_802_11_REMOVE_WEP);
701 OID_STR(OID_802_11_DISASSOCIATE);
702 OID_STR(OID_802_11_AUTHENTICATION_MODE);
703 OID_STR(OID_802_11_PRIVACY_FILTER);
704 OID_STR(OID_802_11_BSSID_LIST_SCAN);
705 OID_STR(OID_802_11_ENCRYPTION_STATUS);
706 OID_STR(OID_802_11_ADD_KEY);
707 OID_STR(OID_802_11_REMOVE_KEY);
708 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
709 OID_STR(OID_802_11_CAPABILITY);
710 OID_STR(OID_802_11_PMKID);
711 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
712 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
713 OID_STR(OID_802_11_TX_POWER_LEVEL);
714 OID_STR(OID_802_11_RSSI);
715 OID_STR(OID_802_11_RSSI_TRIGGER);
716 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
717 OID_STR(OID_802_11_RTS_THRESHOLD);
718 OID_STR(OID_802_11_SUPPORTED_RATES);
719 OID_STR(OID_802_11_CONFIGURATION);
720 OID_STR(OID_802_11_POWER_MODE);
721 OID_STR(OID_802_11_BSSID_LIST);
722#undef OID_STR
723 }
724
725 return "?";
726}
727#else
728static const char *oid_to_string(__le32 oid)
729{
730 return "?";
731}
732#endif
733
734/* translate error code */
735static int rndis_error_status(__le32 rndis_status)
736{
737 int ret = -EINVAL;
738 switch (rndis_status) {
739 case RNDIS_STATUS_SUCCESS:
740 ret = 0;
741 break;
742 case RNDIS_STATUS_FAILURE:
743 case RNDIS_STATUS_INVALID_DATA:
744 ret = -EINVAL;
745 break;
746 case RNDIS_STATUS_NOT_SUPPORTED:
747 ret = -EOPNOTSUPP;
748 break;
749 case RNDIS_STATUS_ADAPTER_NOT_READY:
750 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
751 ret = -EBUSY;
752 break;
753 }
754 return ret;
755}
756
757static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
758{
759 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
760 union {
761 void *buf;
762 struct rndis_msg_hdr *header;
763 struct rndis_query *get;
764 struct rndis_query_c *get_c;
765 } u;
766 int ret, buflen;
767 int resplen, respoffs, copylen;
768
769 buflen = *len + sizeof(*u.get);
770 if (buflen < CONTROL_BUFFER_SIZE)
771 buflen = CONTROL_BUFFER_SIZE;
772
773 if (buflen > COMMAND_BUFFER_SIZE) {
774 u.buf = kmalloc(buflen, GFP_KERNEL);
775 if (!u.buf)
776 return -ENOMEM;
777 } else {
778 u.buf = priv->command_buffer;
779 }
780
781 mutex_lock(&priv->command_lock);
782
783 memset(u.get, 0, sizeof *u.get);
784 u.get->msg_type = RNDIS_MSG_QUERY;
785 u.get->msg_len = cpu_to_le32(sizeof *u.get);
786 u.get->oid = oid;
787
788 priv->current_command_oid = oid;
789 ret = rndis_command(dev, u.header, buflen);
790 priv->current_command_oid = 0;
791 if (ret < 0)
792 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
793 __func__, oid_to_string(oid), ret,
794 le32_to_cpu(u.get_c->status));
795
796 if (ret == 0) {
797 resplen = le32_to_cpu(u.get_c->len);
798 respoffs = le32_to_cpu(u.get_c->offset) + 8;
799
800 if (respoffs > buflen) {
801 /* Device returned data offset outside buffer, error. */
802 netdev_dbg(dev->net, "%s(%s): received invalid "
803 "data offset: %d > %d\n", __func__,
804 oid_to_string(oid), respoffs, buflen);
805
806 ret = -EINVAL;
807 goto exit_unlock;
808 }
809
810 if ((resplen + respoffs) > buflen) {
811 /* Device would have returned more data if buffer would
812 * have been big enough. Copy just the bits that we got.
813 */
814 copylen = buflen - respoffs;
815 } else {
816 copylen = resplen;
817 }
818
819 if (copylen > *len)
820 copylen = *len;
821
822 memcpy(data, u.buf + respoffs, copylen);
823
824 *len = resplen;
825
826 ret = rndis_error_status(u.get_c->status);
827 if (ret < 0)
828 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
829 __func__, oid_to_string(oid),
830 le32_to_cpu(u.get_c->status), ret);
831 }
832
833exit_unlock:
834 mutex_unlock(&priv->command_lock);
835
836 if (u.buf != priv->command_buffer)
837 kfree(u.buf);
838 return ret;
839}
840
841static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
842 int len)
843{
844 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
845 union {
846 void *buf;
847 struct rndis_msg_hdr *header;
848 struct rndis_set *set;
849 struct rndis_set_c *set_c;
850 } u;
851 int ret, buflen;
852
853 buflen = len + sizeof(*u.set);
854 if (buflen < CONTROL_BUFFER_SIZE)
855 buflen = CONTROL_BUFFER_SIZE;
856
857 if (buflen > COMMAND_BUFFER_SIZE) {
858 u.buf = kmalloc(buflen, GFP_KERNEL);
859 if (!u.buf)
860 return -ENOMEM;
861 } else {
862 u.buf = priv->command_buffer;
863 }
864
865 mutex_lock(&priv->command_lock);
866
867 memset(u.set, 0, sizeof *u.set);
868 u.set->msg_type = RNDIS_MSG_SET;
869 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
870 u.set->oid = oid;
871 u.set->len = cpu_to_le32(len);
872 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
873 u.set->handle = cpu_to_le32(0);
874 memcpy(u.buf + sizeof(*u.set), data, len);
875
876 priv->current_command_oid = oid;
877 ret = rndis_command(dev, u.header, buflen);
878 priv->current_command_oid = 0;
879 if (ret < 0)
880 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
881 __func__, oid_to_string(oid), ret,
882 le32_to_cpu(u.set_c->status));
883
884 if (ret == 0) {
885 ret = rndis_error_status(u.set_c->status);
886
887 if (ret < 0)
888 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
889 __func__, oid_to_string(oid),
890 le32_to_cpu(u.set_c->status), ret);
891 }
892
893 mutex_unlock(&priv->command_lock);
894
895 if (u.buf != priv->command_buffer)
896 kfree(u.buf);
897 return ret;
898}
899
900static int rndis_reset(struct usbnet *usbdev)
901{
902 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
903 struct rndis_reset *reset;
904 int ret;
905
906 mutex_lock(&priv->command_lock);
907
908 reset = (void *)priv->command_buffer;
909 memset(reset, 0, sizeof(*reset));
910 reset->msg_type = RNDIS_MSG_RESET;
911 reset->msg_len = cpu_to_le32(sizeof(*reset));
912 priv->current_command_oid = 0;
913 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
914
915 mutex_unlock(&priv->command_lock);
916
917 if (ret < 0)
918 return ret;
919 return 0;
920}
921
922/*
923 * Specs say that we can only set config parameters only soon after device
924 * initialization.
925 * value_type: 0 = u32, 2 = unicode string
926 */
927static int rndis_set_config_parameter(struct usbnet *dev, char *param,
928 int value_type, void *value)
929{
930 struct ndis_config_param *infobuf;
931 int value_len, info_len, param_len, ret, i;
932 __le16 *unibuf;
933 __le32 *dst_value;
934
935 if (value_type == 0)
936 value_len = sizeof(__le32);
937 else if (value_type == 2)
938 value_len = strlen(value) * sizeof(__le16);
939 else
940 return -EINVAL;
941
942 param_len = strlen(param) * sizeof(__le16);
943 info_len = sizeof(*infobuf) + param_len + value_len;
944
945#ifdef DEBUG
946 info_len += 12;
947#endif
948 infobuf = kmalloc(info_len, GFP_KERNEL);
949 if (!infobuf)
950 return -ENOMEM;
951
952#ifdef DEBUG
953 info_len -= 12;
954 /* extra 12 bytes are for padding (debug output) */
955 memset(infobuf, 0xCC, info_len + 12);
956#endif
957
958 if (value_type == 2)
959 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
960 param, (u8 *)value);
961 else
962 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
963 param, *(u32 *)value);
964
965 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
966 infobuf->name_length = cpu_to_le32(param_len);
967 infobuf->type = cpu_to_le32(value_type);
968 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
969 infobuf->value_length = cpu_to_le32(value_len);
970
971 /* simple string to unicode string conversion */
972 unibuf = (void *)infobuf + sizeof(*infobuf);
973 for (i = 0; i < param_len / sizeof(__le16); i++)
974 unibuf[i] = cpu_to_le16(param[i]);
975
976 if (value_type == 2) {
977 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
978 for (i = 0; i < value_len / sizeof(__le16); i++)
979 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
980 } else {
981 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
982 *dst_value = cpu_to_le32(*(u32 *)value);
983 }
984
985#ifdef DEBUG
986 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
987 for (i = 0; i < info_len; i += 12) {
988 u32 *tmp = (u32 *)((u8 *)infobuf + i);
989 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
990 cpu_to_be32(tmp[0]),
991 cpu_to_be32(tmp[1]),
992 cpu_to_be32(tmp[2]));
993 }
994#endif
995
996 ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
997 infobuf, info_len);
998 if (ret != 0)
999 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
1000 ret);
1001
1002 kfree(infobuf);
1003 return ret;
1004}
1005
1006static int rndis_set_config_parameter_str(struct usbnet *dev,
1007 char *param, char *value)
1008{
1009 return rndis_set_config_parameter(dev, param, 2, value);
1010}
1011
1012/*
1013 * data conversion functions
1014 */
1015static int level_to_qual(int level)
1016{
1017 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
1018 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
1019}
1020
1021/*
1022 * common functions
1023 */
1024static int set_infra_mode(struct usbnet *usbdev, int mode);
1025static void restore_keys(struct usbnet *usbdev);
1026static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1027 bool *matched);
1028
1029static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1030{
1031 __le32 tmp;
1032
1033 /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1034 tmp = cpu_to_le32(1);
1035 return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1036 sizeof(tmp));
1037}
1038
1039static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1040{
1041 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1042 int ret;
1043
1044 ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1045 if (ret < 0) {
1046 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1047 return ret;
1048 }
1049 if (ret == 0) {
1050 priv->radio_on = true;
1051 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1052 }
1053
1054 return ret;
1055}
1056
1057static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1058{
1059 int ret;
1060
1061 ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1062 if (ret < 0) {
1063 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1064 bssid, ret);
1065 return ret;
1066 }
1067
1068 return ret;
1069}
1070
1071static int clear_bssid(struct usbnet *usbdev)
1072{
1073 static const u8 broadcast_mac[ETH_ALEN] = {
1074 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1075 };
1076
1077 return set_bssid(usbdev, broadcast_mac);
1078}
1079
1080static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1081{
1082 int ret, len;
1083
1084 len = ETH_ALEN;
1085 ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1086
1087 if (ret != 0)
1088 memset(bssid, 0, ETH_ALEN);
1089
1090 return ret;
1091}
1092
1093static int get_association_info(struct usbnet *usbdev,
1094 struct ndis_80211_assoc_info *info, int len)
1095{
1096 return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1097 info, &len);
1098}
1099
1100static bool is_associated(struct usbnet *usbdev)
1101{
1102 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1103 u8 bssid[ETH_ALEN];
1104 int ret;
1105
1106 if (!priv->radio_on)
1107 return false;
1108
1109 ret = get_bssid(usbdev, bssid);
1110
1111 return (ret == 0 && !is_zero_ether_addr(bssid));
1112}
1113
1114static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1115{
1116 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1117 struct ndis_80211_ssid ssid;
1118 int i, ret = 0;
1119
1120 if (priv->radio_on) {
1121 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1122 if (ret == 0) {
1123 priv->radio_on = false;
1124 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1125 __func__);
1126
1127 if (reset_ssid)
1128 msleep(100);
1129 }
1130 }
1131
1132 /* disassociate causes radio to be turned off; if reset_ssid
1133 * is given, set random ssid to enable radio */
1134 if (reset_ssid) {
1135 /* Set device to infrastructure mode so we don't get ad-hoc
1136 * 'media connect' indications with the random ssid.
1137 */
1138 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1139
1140 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1141 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1142 ssid.essid[0] = 0x1;
1143 ssid.essid[1] = 0xff;
1144 for (i = 2; i < sizeof(ssid.essid); i++)
1145 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1146 ret = set_essid(usbdev, &ssid);
1147 }
1148 return ret;
1149}
1150
1151static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1152 enum nl80211_auth_type auth_type, int keymgmt)
1153{
1154 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155 __le32 tmp;
1156 int auth_mode, ret;
1157
1158 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1159 __func__, wpa_version, auth_type, keymgmt);
1160
1161 if (wpa_version & NL80211_WPA_VERSION_2) {
1162 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1163 auth_mode = NDIS_80211_AUTH_WPA2;
1164 else
1165 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1166 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1167 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1168 auth_mode = NDIS_80211_AUTH_WPA;
1169 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1170 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1171 else
1172 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1173 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1174 auth_mode = NDIS_80211_AUTH_SHARED;
1175 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1176 auth_mode = NDIS_80211_AUTH_OPEN;
1177 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1178 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1179 else
1180 return -ENOTSUPP;
1181
1182 tmp = cpu_to_le32(auth_mode);
1183 ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1184 sizeof(tmp));
1185 if (ret != 0) {
1186 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1187 ret);
1188 return ret;
1189 }
1190
1191 priv->wpa_version = wpa_version;
1192
1193 return 0;
1194}
1195
1196static int set_priv_filter(struct usbnet *usbdev)
1197{
1198 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1199 __le32 tmp;
1200
1201 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1202 __func__, priv->wpa_version);
1203
1204 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1205 priv->wpa_version & NL80211_WPA_VERSION_1)
1206 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1207 else
1208 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1209
1210 return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1211 sizeof(tmp));
1212}
1213
1214static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1215{
1216 __le32 tmp;
1217 int encr_mode, ret;
1218
1219 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1220 __func__, pairwise, groupwise);
1221
1222 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1223 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1224 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1225 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1226 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1227 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1228 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1229 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1230 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1231 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1232 else
1233 encr_mode = NDIS_80211_ENCR_DISABLED;
1234
1235 tmp = cpu_to_le32(encr_mode);
1236 ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1237 sizeof(tmp));
1238 if (ret != 0) {
1239 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1240 ret);
1241 return ret;
1242 }
1243
1244 return 0;
1245}
1246
1247static int set_infra_mode(struct usbnet *usbdev, int mode)
1248{
1249 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1250 __le32 tmp;
1251 int ret;
1252
1253 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1254 __func__, priv->infra_mode);
1255
1256 tmp = cpu_to_le32(mode);
1257 ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1258 sizeof(tmp));
1259 if (ret != 0) {
1260 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1261 ret);
1262 return ret;
1263 }
1264
1265 /* NDIS drivers clear keys when infrastructure mode is
1266 * changed. But Linux tools assume otherwise. So set the
1267 * keys */
1268 restore_keys(usbdev);
1269
1270 priv->infra_mode = mode;
1271 return 0;
1272}
1273
1274static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1275{
1276 __le32 tmp;
1277
1278 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1279
1280 if (rts_threshold < 0 || rts_threshold > 2347)
1281 rts_threshold = 2347;
1282
1283 tmp = cpu_to_le32(rts_threshold);
1284 return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1285 sizeof(tmp));
1286}
1287
1288static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1289{
1290 __le32 tmp;
1291
1292 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1293
1294 if (frag_threshold < 256 || frag_threshold > 2346)
1295 frag_threshold = 2346;
1296
1297 tmp = cpu_to_le32(frag_threshold);
1298 return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1299 sizeof(tmp));
1300}
1301
1302static void set_default_iw_params(struct usbnet *usbdev)
1303{
1304 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1305 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1306 RNDIS_WLAN_KEY_MGMT_NONE);
1307 set_priv_filter(usbdev);
1308 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1309}
1310
1311static int deauthenticate(struct usbnet *usbdev)
1312{
1313 int ret;
1314
1315 ret = disassociate(usbdev, true);
1316 set_default_iw_params(usbdev);
1317 return ret;
1318}
1319
1320static int set_channel(struct usbnet *usbdev, int channel)
1321{
1322 struct ndis_80211_conf config;
1323 unsigned int dsconfig;
1324 int len, ret;
1325
1326 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1327
1328 /* this OID is valid only when not associated */
1329 if (is_associated(usbdev))
1330 return 0;
1331
1332 dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1333
1334 len = sizeof(config);
1335 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1336 if (ret < 0) {
1337 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1338 __func__);
1339 return ret;
1340 }
1341
1342 config.ds_config = cpu_to_le32(dsconfig);
1343 ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1344 sizeof(config));
1345
1346 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1347
1348 return ret;
1349}
1350
1351/* index must be 0 - N, as per NDIS */
1352static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1353 int index)
1354{
1355 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1356 struct ndis_80211_wep_key ndis_key;
1357 u32 cipher;
1358 int ret;
1359
1360 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1361 __func__, index, key_len);
1362
1363 if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1364 return -EINVAL;
1365
1366 if (key_len == 5)
1367 cipher = WLAN_CIPHER_SUITE_WEP40;
1368 else
1369 cipher = WLAN_CIPHER_SUITE_WEP104;
1370
1371 memset(&ndis_key, 0, sizeof(ndis_key));
1372
1373 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1374 ndis_key.length = cpu_to_le32(key_len);
1375 ndis_key.index = cpu_to_le32(index);
1376 memcpy(&ndis_key.material, key, key_len);
1377
1378 if (index == priv->encr_tx_key_index) {
1379 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1380 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1381 RNDIS_WLAN_ALG_NONE);
1382 if (ret)
1383 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1384 ret);
1385 }
1386
1387 ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1388 sizeof(ndis_key));
1389 if (ret != 0) {
1390 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1391 index + 1, ret);
1392 return ret;
1393 }
1394
1395 priv->encr_keys[index].len = key_len;
1396 priv->encr_keys[index].cipher = cipher;
1397 memcpy(&priv->encr_keys[index].material, key, key_len);
1398 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1399
1400 return 0;
1401}
1402
1403static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1404 int index, const u8 *addr, const u8 *rx_seq,
1405 int seq_len, u32 cipher, __le32 flags)
1406{
1407 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1408 struct ndis_80211_key ndis_key;
1409 bool is_addr_ok;
1410 int ret;
1411
1412 if (index < 0 || index >= 4) {
1413 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1414 __func__, index);
1415 return -EINVAL;
1416 }
1417 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1418 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1419 __func__, key_len);
1420 return -EINVAL;
1421 }
1422 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1423 if (!rx_seq || seq_len <= 0) {
1424 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1425 __func__);
1426 return -EINVAL;
1427 }
1428 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1429 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1430 return -EINVAL;
1431 }
1432 }
1433
1434 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1435 !is_broadcast_ether_addr(addr);
1436 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1437 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1438 __func__, addr);
1439 return -EINVAL;
1440 }
1441
1442 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1443 __func__, index,
1444 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1445 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1446 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1447
1448 memset(&ndis_key, 0, sizeof(ndis_key));
1449
1450 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1451 sizeof(ndis_key.material) + key_len);
1452 ndis_key.length = cpu_to_le32(key_len);
1453 ndis_key.index = cpu_to_le32(index) | flags;
1454
1455 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1456 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1457 * different order than NDIS spec, so swap the order here. */
1458 memcpy(ndis_key.material, key, 16);
1459 memcpy(ndis_key.material + 16, key + 24, 8);
1460 memcpy(ndis_key.material + 24, key + 16, 8);
1461 } else
1462 memcpy(ndis_key.material, key, key_len);
1463
1464 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1465 memcpy(ndis_key.rsc, rx_seq, seq_len);
1466
1467 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1468 /* pairwise key */
1469 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1470 } else {
1471 /* group key */
1472 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1473 memset(ndis_key.bssid, 0xff, ETH_ALEN);
1474 else
1475 get_bssid(usbdev, ndis_key.bssid);
1476 }
1477
1478 ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1479 le32_to_cpu(ndis_key.size));
1480 netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1481 __func__, ret);
1482 if (ret != 0)
1483 return ret;
1484
1485 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1486 priv->encr_keys[index].len = key_len;
1487 priv->encr_keys[index].cipher = cipher;
1488 memcpy(&priv->encr_keys[index].material, key, key_len);
1489 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1490 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1491 else
1492 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1493
1494 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1495 priv->encr_tx_key_index = index;
1496
1497 return 0;
1498}
1499
1500static int restore_key(struct usbnet *usbdev, int key_idx)
1501{
1502 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1503 struct rndis_wlan_encr_key key;
1504
1505 if (is_wpa_key(priv, key_idx))
1506 return 0;
1507
1508 key = priv->encr_keys[key_idx];
1509
1510 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1511
1512 if (key.len == 0)
1513 return 0;
1514
1515 return add_wep_key(usbdev, key.material, key.len, key_idx);
1516}
1517
1518static void restore_keys(struct usbnet *usbdev)
1519{
1520 int i;
1521
1522 for (i = 0; i < 4; i++)
1523 restore_key(usbdev, i);
1524}
1525
1526static void clear_key(struct rndis_wlan_private *priv, int idx)
1527{
1528 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1529}
1530
1531/* remove_key is for both wep and wpa */
1532static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1533{
1534 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1535 struct ndis_80211_remove_key remove_key;
1536 __le32 keyindex;
1537 bool is_wpa;
1538 int ret;
1539
1540 if (priv->encr_keys[index].len == 0)
1541 return 0;
1542
1543 is_wpa = is_wpa_key(priv, index);
1544
1545 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1546 __func__, index, is_wpa ? "wpa" : "wep",
1547 priv->encr_keys[index].len);
1548
1549 clear_key(priv, index);
1550
1551 if (is_wpa) {
1552 remove_key.size = cpu_to_le32(sizeof(remove_key));
1553 remove_key.index = cpu_to_le32(index);
1554 if (bssid) {
1555 /* pairwise key */
1556 if (!is_broadcast_ether_addr(bssid))
1557 remove_key.index |=
1558 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1559 memcpy(remove_key.bssid, bssid,
1560 sizeof(remove_key.bssid));
1561 } else
1562 memset(remove_key.bssid, 0xff,
1563 sizeof(remove_key.bssid));
1564
1565 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1566 sizeof(remove_key));
1567 if (ret != 0)
1568 return ret;
1569 } else {
1570 keyindex = cpu_to_le32(index);
1571 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1572 sizeof(keyindex));
1573 if (ret != 0) {
1574 netdev_warn(usbdev->net,
1575 "removing encryption key %d failed (%08X)\n",
1576 index, ret);
1577 return ret;
1578 }
1579 }
1580
1581 /* if it is transmit key, disable encryption */
1582 if (index == priv->encr_tx_key_index)
1583 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1584
1585 return 0;
1586}
1587
1588static void set_multicast_list(struct usbnet *usbdev)
1589{
1590 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1591 struct netdev_hw_addr *ha;
1592 __le32 filter, basefilter;
1593 int ret;
1594 char *mc_addrs = NULL;
1595 int mc_count;
1596
1597 basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1598 RNDIS_PACKET_TYPE_BROADCAST;
1599
1600 if (usbdev->net->flags & IFF_PROMISC) {
1601 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1602 RNDIS_PACKET_TYPE_ALL_LOCAL;
1603 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1604 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1605 }
1606
1607 if (filter != basefilter)
1608 goto set_filter;
1609
1610 /*
1611 * mc_list should be accessed holding the lock, so copy addresses to
1612 * local buffer first.
1613 */
1614 netif_addr_lock_bh(usbdev->net);
1615 mc_count = netdev_mc_count(usbdev->net);
1616 if (mc_count > priv->multicast_size) {
1617 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1618 } else if (mc_count) {
1619 int i = 0;
1620
1621 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1622 if (!mc_addrs) {
1623 netdev_warn(usbdev->net,
1624 "couldn't alloc %d bytes of memory\n",
1625 mc_count * ETH_ALEN);
1626 netif_addr_unlock_bh(usbdev->net);
1627 return;
1628 }
1629
1630 netdev_for_each_mc_addr(ha, usbdev->net)
1631 memcpy(mc_addrs + i++ * ETH_ALEN,
1632 ha->addr, ETH_ALEN);
1633 }
1634 netif_addr_unlock_bh(usbdev->net);
1635
1636 if (filter != basefilter)
1637 goto set_filter;
1638
1639 if (mc_count) {
1640 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1641 mc_count * ETH_ALEN);
1642 kfree(mc_addrs);
1643 if (ret == 0)
1644 filter |= RNDIS_PACKET_TYPE_MULTICAST;
1645 else
1646 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1647
1648 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1649 mc_count, priv->multicast_size, ret);
1650 }
1651
1652set_filter:
1653 ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1654 sizeof(filter));
1655 if (ret < 0) {
1656 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1657 le32_to_cpu(filter));
1658 }
1659
1660 netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1661 le32_to_cpu(filter), ret);
1662}
1663
1664#ifdef DEBUG
1665static void debug_print_pmkids(struct usbnet *usbdev,
1666 struct ndis_80211_pmkid *pmkids,
1667 const char *func_str)
1668{
1669 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1670 int i, len, count, max_pmkids, entry_len;
1671
1672 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1673 len = le32_to_cpu(pmkids->length);
1674 count = le32_to_cpu(pmkids->bssid_info_count);
1675
1676 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1677
1678 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1679 "%d)\n", func_str, count, len, entry_len);
1680
1681 if (count > max_pmkids)
1682 count = max_pmkids;
1683
1684 for (i = 0; i < count; i++) {
1685 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1686
1687 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1688 "pmkid: %08X:%08X:%08X:%08X\n",
1689 func_str, pmkids->bssid_info[i].bssid,
1690 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1691 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1692 }
1693}
1694#else
1695static void debug_print_pmkids(struct usbnet *usbdev,
1696 struct ndis_80211_pmkid *pmkids,
1697 const char *func_str)
1698{
1699 return;
1700}
1701#endif
1702
1703static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1704{
1705 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1706 struct ndis_80211_pmkid *pmkids;
1707 int len, ret, max_pmkids;
1708
1709 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1710 len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1711
1712 pmkids = kzalloc(len, GFP_KERNEL);
1713 if (!pmkids)
1714 return ERR_PTR(-ENOMEM);
1715
1716 pmkids->length = cpu_to_le32(len);
1717 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1718
1719 ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1720 if (ret < 0) {
1721 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1722 " -> %d\n", __func__, len, max_pmkids, ret);
1723
1724 kfree(pmkids);
1725 return ERR_PTR(ret);
1726 }
1727
1728 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1729 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1730
1731 debug_print_pmkids(usbdev, pmkids, __func__);
1732
1733 return pmkids;
1734}
1735
1736static int set_device_pmkids(struct usbnet *usbdev,
1737 struct ndis_80211_pmkid *pmkids)
1738{
1739 int ret, len, num_pmkids;
1740
1741 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1742 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1743 pmkids->length = cpu_to_le32(len);
1744
1745 debug_print_pmkids(usbdev, pmkids, __func__);
1746
1747 ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1748 le32_to_cpu(pmkids->length));
1749 if (ret < 0) {
1750 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1751 "\n", __func__, len, num_pmkids, ret);
1752 }
1753
1754 kfree(pmkids);
1755 return ret;
1756}
1757
1758static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1759 struct ndis_80211_pmkid *pmkids,
1760 struct cfg80211_pmksa *pmksa,
1761 int max_pmkids)
1762{
1763 int i, len, count, newlen, err;
1764
1765 len = le32_to_cpu(pmkids->length);
1766 count = le32_to_cpu(pmkids->bssid_info_count);
1767
1768 if (count > max_pmkids)
1769 count = max_pmkids;
1770
1771 for (i = 0; i < count; i++)
1772 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1773 pmksa->bssid))
1774 break;
1775
1776 /* pmkid not found */
1777 if (i == count) {
1778 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1779 __func__, pmksa->bssid);
1780 err = -ENOENT;
1781 goto error;
1782 }
1783
1784 for (; i + 1 < count; i++)
1785 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1786
1787 count--;
1788 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1789
1790 pmkids->length = cpu_to_le32(newlen);
1791 pmkids->bssid_info_count = cpu_to_le32(count);
1792
1793 return pmkids;
1794error:
1795 kfree(pmkids);
1796 return ERR_PTR(err);
1797}
1798
1799static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1800 struct ndis_80211_pmkid *pmkids,
1801 struct cfg80211_pmksa *pmksa,
1802 int max_pmkids)
1803{
1804 int i, err, len, count, newlen;
1805
1806 len = le32_to_cpu(pmkids->length);
1807 count = le32_to_cpu(pmkids->bssid_info_count);
1808
1809 if (count > max_pmkids)
1810 count = max_pmkids;
1811
1812 /* update with new pmkid */
1813 for (i = 0; i < count; i++) {
1814 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1815 pmksa->bssid))
1816 continue;
1817
1818 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1819 WLAN_PMKID_LEN);
1820
1821 return pmkids;
1822 }
1823
1824 /* out of space, return error */
1825 if (i == max_pmkids) {
1826 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1827 err = -ENOSPC;
1828 goto error;
1829 }
1830
1831 /* add new pmkid */
1832 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1833
1834 pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1835 if (!pmkids) {
1836 err = -ENOMEM;
1837 goto error;
1838 }
1839
1840 pmkids->length = cpu_to_le32(newlen);
1841 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1842
1843 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1844 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1845
1846 return pmkids;
1847error:
1848 kfree(pmkids);
1849 return ERR_PTR(err);
1850}
1851
1852/*
1853 * cfg80211 ops
1854 */
1855static int rndis_change_virtual_intf(struct wiphy *wiphy,
1856 struct net_device *dev,
1857 enum nl80211_iftype type, u32 *flags,
1858 struct vif_params *params)
1859{
1860 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1861 struct usbnet *usbdev = priv->usbdev;
1862 int mode;
1863
1864 switch (type) {
1865 case NL80211_IFTYPE_ADHOC:
1866 mode = NDIS_80211_INFRA_ADHOC;
1867 break;
1868 case NL80211_IFTYPE_STATION:
1869 mode = NDIS_80211_INFRA_INFRA;
1870 break;
1871 default:
1872 return -EINVAL;
1873 }
1874
1875 priv->wdev.iftype = type;
1876
1877 return set_infra_mode(usbdev, mode);
1878}
1879
1880static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1881{
1882 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1883 struct usbnet *usbdev = priv->usbdev;
1884 int err;
1885
1886 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1887 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1888 if (err < 0)
1889 return err;
1890 }
1891
1892 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1893 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1894 if (err < 0)
1895 return err;
1896 }
1897
1898 return 0;
1899}
1900
1901static int rndis_set_tx_power(struct wiphy *wiphy,
1902 enum nl80211_tx_power_setting type,
1903 int mbm)
1904{
1905 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1906 struct usbnet *usbdev = priv->usbdev;
1907
1908 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1909 __func__, type, mbm);
1910
1911 if (mbm < 0 || (mbm % 100))
1912 return -ENOTSUPP;
1913
1914 /* Device doesn't support changing txpower after initialization, only
1915 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1916 * currently used.
1917 */
1918 if (type == NL80211_TX_POWER_AUTOMATIC ||
1919 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1920 if (!priv->radio_on)
1921 disassociate(usbdev, true); /* turn on radio */
1922
1923 return 0;
1924 }
1925
1926 return -ENOTSUPP;
1927}
1928
1929static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1930{
1931 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1932 struct usbnet *usbdev = priv->usbdev;
1933
1934 *dbm = get_bcm4320_power_dbm(priv);
1935
1936 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1937
1938 return 0;
1939}
1940
1941#define SCAN_DELAY_JIFFIES (6 * HZ)
1942static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1943 struct cfg80211_scan_request *request)
1944{
1945 struct usbnet *usbdev = netdev_priv(dev);
1946 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1947 int ret;
1948 int delay = SCAN_DELAY_JIFFIES;
1949
1950 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1951
1952 /* Get current bssid list from device before new scan, as new scan
1953 * clears internal bssid list.
1954 */
1955 rndis_check_bssid_list(usbdev, NULL, NULL);
1956
1957 if (!request)
1958 return -EINVAL;
1959
1960 if (priv->scan_request && priv->scan_request != request)
1961 return -EBUSY;
1962
1963 priv->scan_request = request;
1964
1965 ret = rndis_start_bssid_list_scan(usbdev);
1966 if (ret == 0) {
1967 if (priv->device_type == RNDIS_BCM4320A)
1968 delay = HZ;
1969
1970 /* Wait before retrieving scan results from device */
1971 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1972 }
1973
1974 return ret;
1975}
1976
1977static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1978 struct ndis_80211_bssid_ex *bssid)
1979{
1980 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1981 struct ieee80211_channel *channel;
1982 s32 signal;
1983 u64 timestamp;
1984 u16 capability;
1985 u16 beacon_interval;
1986 struct ndis_80211_fixed_ies *fixed;
1987 int ie_len, bssid_len;
1988 u8 *ie;
1989
1990 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1991 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1992
1993 /* parse bssid structure */
1994 bssid_len = le32_to_cpu(bssid->length);
1995
1996 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1997 sizeof(struct ndis_80211_fixed_ies))
1998 return NULL;
1999
2000 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2001
2002 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2003 ie_len = min(bssid_len - (int)sizeof(*bssid),
2004 (int)le32_to_cpu(bssid->ie_length));
2005 ie_len -= sizeof(struct ndis_80211_fixed_ies);
2006 if (ie_len < 0)
2007 return NULL;
2008
2009 /* extract data for cfg80211_inform_bss */
2010 channel = ieee80211_get_channel(priv->wdev.wiphy,
2011 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2012 if (!channel)
2013 return NULL;
2014
2015 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2016 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2017 capability = le16_to_cpu(fixed->capabilities);
2018 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2019
2020 return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2021 timestamp, capability, beacon_interval, ie, ie_len, signal,
2022 GFP_KERNEL);
2023}
2024
2025static struct ndis_80211_bssid_ex *next_bssid_list_item(
2026 struct ndis_80211_bssid_ex *bssid,
2027 int *bssid_len, void *buf, int len)
2028{
2029 void *buf_end, *bssid_end;
2030
2031 buf_end = (char *)buf + len;
2032 bssid_end = (char *)bssid + *bssid_len;
2033
2034 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2035 *bssid_len = 0;
2036 return NULL;
2037 } else {
2038 bssid = (void *)((char *)bssid + *bssid_len);
2039 *bssid_len = le32_to_cpu(bssid->length);
2040 return bssid;
2041 }
2042}
2043
2044static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2045 int bssid_len, void *buf, int len)
2046{
2047 void *buf_end, *bssid_end;
2048
2049 if (!bssid || bssid_len <= 0 || bssid_len > len)
2050 return false;
2051
2052 buf_end = (char *)buf + len;
2053 bssid_end = (char *)bssid + bssid_len;
2054
2055 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2056}
2057
2058static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2059 bool *matched)
2060{
2061 void *buf = NULL;
2062 struct ndis_80211_bssid_list_ex *bssid_list;
2063 struct ndis_80211_bssid_ex *bssid;
2064 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2065
2066 netdev_dbg(usbdev->net, "%s()\n", __func__);
2067
2068 len = CONTROL_BUFFER_SIZE;
2069resize_buf:
2070 buf = kzalloc(len, GFP_KERNEL);
2071 if (!buf) {
2072 ret = -ENOMEM;
2073 goto out;
2074 }
2075
2076 /* BSSID-list might have got bigger last time we checked, keep
2077 * resizing until it won't get any bigger.
2078 */
2079 new_len = len;
2080 ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2081 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2082 goto out;
2083
2084 if (new_len > len) {
2085 len = new_len;
2086 kfree(buf);
2087 goto resize_buf;
2088 }
2089
2090 len = new_len;
2091
2092 bssid_list = buf;
2093 count = le32_to_cpu(bssid_list->num_items);
2094 real_count = 0;
2095 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2096
2097 bssid_len = 0;
2098 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2099
2100 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2101 * received 'num_items' and walking through full bssid buffer instead.
2102 */
2103 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2104 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2105 matched) {
2106 if (compare_ether_addr(bssid->mac, match_bssid))
2107 *matched = true;
2108 }
2109
2110 real_count++;
2111 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2112 }
2113
2114 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2115 " %d\n", __func__, count, real_count);
2116
2117out:
2118 kfree(buf);
2119 return ret;
2120}
2121
2122static void rndis_get_scan_results(struct work_struct *work)
2123{
2124 struct rndis_wlan_private *priv =
2125 container_of(work, struct rndis_wlan_private, scan_work.work);
2126 struct usbnet *usbdev = priv->usbdev;
2127 int ret;
2128
2129 netdev_dbg(usbdev->net, "get_scan_results\n");
2130
2131 if (!priv->scan_request)
2132 return;
2133
2134 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2135
2136 cfg80211_scan_done(priv->scan_request, ret < 0);
2137
2138 priv->scan_request = NULL;
2139}
2140
2141static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2142 struct cfg80211_connect_params *sme)
2143{
2144 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2145 struct usbnet *usbdev = priv->usbdev;
2146 struct ieee80211_channel *channel = sme->channel;
2147 struct ndis_80211_ssid ssid;
2148 int pairwise = RNDIS_WLAN_ALG_NONE;
2149 int groupwise = RNDIS_WLAN_ALG_NONE;
2150 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2151 int length, i, ret, chan = -1;
2152
2153 if (channel)
2154 chan = ieee80211_frequency_to_channel(channel->center_freq);
2155
2156 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2157 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2158 pairwise |=
2159 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2160
2161 if (sme->crypto.n_ciphers_pairwise > 0 &&
2162 pairwise == RNDIS_WLAN_ALG_NONE) {
2163 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2164 return -ENOTSUPP;
2165 }
2166
2167 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2168 keymgmt |=
2169 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2170
2171 if (sme->crypto.n_akm_suites > 0 &&
2172 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2173 netdev_err(usbdev->net, "Invalid keymgmt\n");
2174 return -ENOTSUPP;
2175 }
2176
2177 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2178 sme->ssid, sme->bssid, chan,
2179 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2180 groupwise, pairwise, keymgmt);
2181
2182 if (is_associated(usbdev))
2183 disassociate(usbdev, false);
2184
2185 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2186 if (ret < 0) {
2187 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2188 ret);
2189 goto err_turn_radio_on;
2190 }
2191
2192 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2193 keymgmt);
2194 if (ret < 0) {
2195 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2196 ret);
2197 goto err_turn_radio_on;
2198 }
2199
2200 set_priv_filter(usbdev);
2201
2202 ret = set_encr_mode(usbdev, pairwise, groupwise);
2203 if (ret < 0) {
2204 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2205 ret);
2206 goto err_turn_radio_on;
2207 }
2208
2209 if (channel) {
2210 ret = set_channel(usbdev, chan);
2211 if (ret < 0) {
2212 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2213 ret);
2214 goto err_turn_radio_on;
2215 }
2216 }
2217
2218 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2219 priv->encr_tx_key_index = sme->key_idx;
2220 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2221 if (ret < 0) {
2222 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2223 ret, sme->key_len, sme->key_idx);
2224 goto err_turn_radio_on;
2225 }
2226 }
2227
2228 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2229 !is_broadcast_ether_addr(sme->bssid)) {
2230 ret = set_bssid(usbdev, sme->bssid);
2231 if (ret < 0) {
2232 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2233 ret);
2234 goto err_turn_radio_on;
2235 }
2236 } else
2237 clear_bssid(usbdev);
2238
2239 length = sme->ssid_len;
2240 if (length > NDIS_802_11_LENGTH_SSID)
2241 length = NDIS_802_11_LENGTH_SSID;
2242
2243 memset(&ssid, 0, sizeof(ssid));
2244 ssid.length = cpu_to_le32(length);
2245 memcpy(ssid.essid, sme->ssid, length);
2246
2247 /* Pause and purge rx queue, so we don't pass packets before
2248 * 'media connect'-indication.
2249 */
2250 usbnet_pause_rx(usbdev);
2251 usbnet_purge_paused_rxq(usbdev);
2252
2253 ret = set_essid(usbdev, &ssid);
2254 if (ret < 0)
2255 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2256 return ret;
2257
2258err_turn_radio_on:
2259 disassociate(usbdev, true);
2260
2261 return ret;
2262}
2263
2264static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2265 u16 reason_code)
2266{
2267 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2268 struct usbnet *usbdev = priv->usbdev;
2269
2270 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2271
2272 priv->connected = false;
2273 memset(priv->bssid, 0, ETH_ALEN);
2274
2275 return deauthenticate(usbdev);
2276}
2277
2278static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2279 struct cfg80211_ibss_params *params)
2280{
2281 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2282 struct usbnet *usbdev = priv->usbdev;
2283 struct ieee80211_channel *channel = params->channel;
2284 struct ndis_80211_ssid ssid;
2285 enum nl80211_auth_type auth_type;
2286 int ret, alg, length, chan = -1;
2287
2288 if (channel)
2289 chan = ieee80211_frequency_to_channel(channel->center_freq);
2290
2291 /* TODO: How to handle ad-hoc encryption?
2292 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2293 * pre-shared for encryption (open/shared/wpa), is key set before
2294 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2295 */
2296 if (params->privacy) {
2297 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2298 alg = RNDIS_WLAN_ALG_WEP;
2299 } else {
2300 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2301 alg = RNDIS_WLAN_ALG_NONE;
2302 }
2303
2304 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2305 params->ssid, params->bssid, chan, params->privacy);
2306
2307 if (is_associated(usbdev))
2308 disassociate(usbdev, false);
2309
2310 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2311 if (ret < 0) {
2312 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2313 ret);
2314 goto err_turn_radio_on;
2315 }
2316
2317 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2318 if (ret < 0) {
2319 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2320 ret);
2321 goto err_turn_radio_on;
2322 }
2323
2324 set_priv_filter(usbdev);
2325
2326 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2327 if (ret < 0) {
2328 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2329 ret);
2330 goto err_turn_radio_on;
2331 }
2332
2333 if (channel) {
2334 ret = set_channel(usbdev, chan);
2335 if (ret < 0) {
2336 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2337 ret);
2338 goto err_turn_radio_on;
2339 }
2340 }
2341
2342 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2343 !is_broadcast_ether_addr(params->bssid)) {
2344 ret = set_bssid(usbdev, params->bssid);
2345 if (ret < 0) {
2346 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2347 ret);
2348 goto err_turn_radio_on;
2349 }
2350 } else
2351 clear_bssid(usbdev);
2352
2353 length = params->ssid_len;
2354 if (length > NDIS_802_11_LENGTH_SSID)
2355 length = NDIS_802_11_LENGTH_SSID;
2356
2357 memset(&ssid, 0, sizeof(ssid));
2358 ssid.length = cpu_to_le32(length);
2359 memcpy(ssid.essid, params->ssid, length);
2360
2361 /* Don't need to pause rx queue for ad-hoc. */
2362 usbnet_purge_paused_rxq(usbdev);
2363 usbnet_resume_rx(usbdev);
2364
2365 ret = set_essid(usbdev, &ssid);
2366 if (ret < 0)
2367 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2368 ret);
2369 return ret;
2370
2371err_turn_radio_on:
2372 disassociate(usbdev, true);
2373
2374 return ret;
2375}
2376
2377static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2378{
2379 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2380 struct usbnet *usbdev = priv->usbdev;
2381
2382 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2383
2384 priv->connected = false;
2385 memset(priv->bssid, 0, ETH_ALEN);
2386
2387 return deauthenticate(usbdev);
2388}
2389
2390static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2391 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2392{
2393 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2394 struct usbnet *usbdev = priv->usbdev;
2395
2396 return set_channel(usbdev,
2397 ieee80211_frequency_to_channel(chan->center_freq));
2398}
2399
2400static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2401 u8 key_index, bool pairwise, const u8 *mac_addr,
2402 struct key_params *params)
2403{
2404 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2405 struct usbnet *usbdev = priv->usbdev;
2406 __le32 flags;
2407
2408 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2409 __func__, key_index, mac_addr, params->cipher);
2410
2411 switch (params->cipher) {
2412 case WLAN_CIPHER_SUITE_WEP40:
2413 case WLAN_CIPHER_SUITE_WEP104:
2414 return add_wep_key(usbdev, params->key, params->key_len,
2415 key_index);
2416 case WLAN_CIPHER_SUITE_TKIP:
2417 case WLAN_CIPHER_SUITE_CCMP:
2418 flags = 0;
2419
2420 if (params->seq && params->seq_len > 0)
2421 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2422 if (mac_addr)
2423 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2424 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2425
2426 return add_wpa_key(usbdev, params->key, params->key_len,
2427 key_index, mac_addr, params->seq,
2428 params->seq_len, params->cipher, flags);
2429 default:
2430 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2431 __func__, params->cipher);
2432 return -ENOTSUPP;
2433 }
2434}
2435
2436static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2437 u8 key_index, bool pairwise, const u8 *mac_addr)
2438{
2439 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2440 struct usbnet *usbdev = priv->usbdev;
2441
2442 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2443
2444 return remove_key(usbdev, key_index, mac_addr);
2445}
2446
2447static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2448 u8 key_index, bool unicast, bool multicast)
2449{
2450 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2451 struct usbnet *usbdev = priv->usbdev;
2452 struct rndis_wlan_encr_key key;
2453
2454 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2455
2456 priv->encr_tx_key_index = key_index;
2457
2458 if (is_wpa_key(priv, key_index))
2459 return 0;
2460
2461 key = priv->encr_keys[key_index];
2462
2463 return add_wep_key(usbdev, key.material, key.len, key_index);
2464}
2465
2466static void rndis_fill_station_info(struct usbnet *usbdev,
2467 struct station_info *sinfo)
2468{
2469 __le32 linkspeed, rssi;
2470 int ret, len;
2471
2472 memset(sinfo, 0, sizeof(*sinfo));
2473
2474 len = sizeof(linkspeed);
2475 ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2476 if (ret == 0) {
2477 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2478 sinfo->filled |= STATION_INFO_TX_BITRATE;
2479 }
2480
2481 len = sizeof(rssi);
2482 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2483 if (ret == 0) {
2484 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2485 sinfo->filled |= STATION_INFO_SIGNAL;
2486 }
2487}
2488
2489static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2490 u8 *mac, struct station_info *sinfo)
2491{
2492 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2493 struct usbnet *usbdev = priv->usbdev;
2494
2495 if (compare_ether_addr(priv->bssid, mac))
2496 return -ENOENT;
2497
2498 rndis_fill_station_info(usbdev, sinfo);
2499
2500 return 0;
2501}
2502
2503static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2504 int idx, u8 *mac, struct station_info *sinfo)
2505{
2506 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2507 struct usbnet *usbdev = priv->usbdev;
2508
2509 if (idx != 0)
2510 return -ENOENT;
2511
2512 memcpy(mac, priv->bssid, ETH_ALEN);
2513
2514 rndis_fill_station_info(usbdev, sinfo);
2515
2516 return 0;
2517}
2518
2519static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2520 struct cfg80211_pmksa *pmksa)
2521{
2522 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2523 struct usbnet *usbdev = priv->usbdev;
2524 struct ndis_80211_pmkid *pmkids;
2525 u32 *tmp = (u32 *)pmksa->pmkid;
2526
2527 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2528 pmksa->bssid,
2529 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2530 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2531
2532 pmkids = get_device_pmkids(usbdev);
2533 if (IS_ERR(pmkids)) {
2534 /* couldn't read PMKID cache from device */
2535 return PTR_ERR(pmkids);
2536 }
2537
2538 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2539 if (IS_ERR(pmkids)) {
2540 /* not found, list full, etc */
2541 return PTR_ERR(pmkids);
2542 }
2543
2544 return set_device_pmkids(usbdev, pmkids);
2545}
2546
2547static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2548 struct cfg80211_pmksa *pmksa)
2549{
2550 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2551 struct usbnet *usbdev = priv->usbdev;
2552 struct ndis_80211_pmkid *pmkids;
2553 u32 *tmp = (u32 *)pmksa->pmkid;
2554
2555 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2556 pmksa->bssid,
2557 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2558 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2559
2560 pmkids = get_device_pmkids(usbdev);
2561 if (IS_ERR(pmkids)) {
2562 /* Couldn't read PMKID cache from device */
2563 return PTR_ERR(pmkids);
2564 }
2565
2566 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2567 if (IS_ERR(pmkids)) {
2568 /* not found, etc */
2569 return PTR_ERR(pmkids);
2570 }
2571
2572 return set_device_pmkids(usbdev, pmkids);
2573}
2574
2575static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2576{
2577 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2578 struct usbnet *usbdev = priv->usbdev;
2579 struct ndis_80211_pmkid pmkid;
2580
2581 netdev_dbg(usbdev->net, "%s()\n", __func__);
2582
2583 memset(&pmkid, 0, sizeof(pmkid));
2584
2585 pmkid.length = cpu_to_le32(sizeof(pmkid));
2586 pmkid.bssid_info_count = cpu_to_le32(0);
2587
2588 return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2589}
2590
2591static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2592 bool enabled, int timeout)
2593{
2594 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2595 struct usbnet *usbdev = priv->usbdev;
2596 int power_mode;
2597 __le32 mode;
2598 int ret;
2599
2600 if (priv->device_type != RNDIS_BCM4320B)
2601 return -ENOTSUPP;
2602
2603 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2604 enabled ? "enabled" : "disabled",
2605 timeout);
2606
2607 if (enabled)
2608 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2609 else
2610 power_mode = NDIS_80211_POWER_MODE_CAM;
2611
2612 if (power_mode == priv->power_mode)
2613 return 0;
2614
2615 priv->power_mode = power_mode;
2616
2617 mode = cpu_to_le32(power_mode);
2618 ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2619
2620 netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2621 __func__, ret);
2622
2623 return ret;
2624}
2625
2626static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2627 struct net_device *dev,
2628 s32 rssi_thold, u32 rssi_hyst)
2629{
2630 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2631
2632 priv->cqm_rssi_thold = rssi_thold;
2633 priv->cqm_rssi_hyst = rssi_hyst;
2634 priv->last_cqm_event_rssi = 0;
2635
2636 return 0;
2637}
2638
2639static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2640 struct ndis_80211_assoc_info *info)
2641{
2642 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2643 struct ieee80211_channel *channel;
2644 struct ndis_80211_conf config;
2645 struct ndis_80211_ssid ssid;
2646 s32 signal;
2647 u64 timestamp;
2648 u16 capability;
2649 u16 beacon_interval;
2650 __le32 rssi;
2651 u8 ie_buf[34];
2652 int len, ret, ie_len;
2653
2654 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2655 len = sizeof(rssi);
2656 rssi = 0;
2657 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2658 signal = level_to_qual(le32_to_cpu(rssi));
2659
2660 netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2661 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2662 level_to_qual(le32_to_cpu(rssi)));
2663
2664 /* Get AP capabilities */
2665 if (info) {
2666 capability = le16_to_cpu(info->resp_ie.capa);
2667 } else {
2668 /* Set atleast ESS/IBSS capability */
2669 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2670 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2671 }
2672
2673 /* Get channel and beacon interval */
2674 len = sizeof(config);
2675 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
2676 netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
2677 __func__, ret);
2678 if (ret >= 0) {
2679 beacon_interval = le16_to_cpu(config.beacon_period);
2680 channel = ieee80211_get_channel(priv->wdev.wiphy,
2681 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
2682 if (!channel) {
2683 netdev_warn(usbdev->net, "%s(): could not get channel."
2684 "\n", __func__);
2685 return;
2686 }
2687 } else {
2688 netdev_warn(usbdev->net, "%s(): could not get configuration.\n",
2689 __func__);
2690 return;
2691 }
2692
2693 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2694 len = sizeof(ssid);
2695 memset(&ssid, 0, sizeof(ssid));
2696 ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2697 netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2698 "'%.32s'\n", __func__, ret,
2699 le32_to_cpu(ssid.length), ssid.essid);
2700
2701 if (le32_to_cpu(ssid.length) > 32)
2702 ssid.length = cpu_to_le32(32);
2703
2704 ie_buf[0] = WLAN_EID_SSID;
2705 ie_buf[1] = le32_to_cpu(ssid.length);
2706 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2707
2708 ie_len = le32_to_cpu(ssid.length) + 2;
2709
2710 /* no tsf */
2711 timestamp = 0;
2712
2713 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2714 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2715 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2716 bssid, (u32)timestamp, capability, beacon_interval, ie_len,
2717 ssid.essid, signal);
2718
2719 cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2720 timestamp, capability, beacon_interval, ie_buf, ie_len,
2721 signal, GFP_KERNEL);
2722}
2723
2724/*
2725 * workers, indication handlers, device poller
2726 */
2727static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2728{
2729 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2730 struct ndis_80211_assoc_info *info = NULL;
2731 u8 bssid[ETH_ALEN];
2732 int resp_ie_len, req_ie_len;
2733 u8 *req_ie, *resp_ie;
2734 int ret, offset;
2735 bool roamed = false;
2736 bool match_bss;
2737
2738 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2739 /* received media connect indication while connected, either
2740 * device reassociated with same AP or roamed to new. */
2741 roamed = true;
2742 }
2743
2744 req_ie_len = 0;
2745 resp_ie_len = 0;
2746 req_ie = NULL;
2747 resp_ie = NULL;
2748
2749 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2750 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2751 if (!info) {
2752 /* No memory? Try resume work later */
2753 set_bit(WORK_LINK_UP, &priv->work_pending);
2754 queue_work(priv->workqueue, &priv->work);
2755 return;
2756 }
2757
2758 /* Get association info IEs from device. */
2759 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2760 if (!ret) {
2761 req_ie_len = le32_to_cpu(info->req_ie_length);
2762 if (req_ie_len > 0) {
2763 offset = le32_to_cpu(info->offset_req_ies);
2764
2765 if (offset > CONTROL_BUFFER_SIZE)
2766 offset = CONTROL_BUFFER_SIZE;
2767
2768 req_ie = (u8 *)info + offset;
2769
2770 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2771 req_ie_len =
2772 CONTROL_BUFFER_SIZE - offset;
2773 }
2774
2775 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2776 if (resp_ie_len > 0) {
2777 offset = le32_to_cpu(info->offset_resp_ies);
2778
2779 if (offset > CONTROL_BUFFER_SIZE)
2780 offset = CONTROL_BUFFER_SIZE;
2781
2782 resp_ie = (u8 *)info + offset;
2783
2784 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2785 resp_ie_len =
2786 CONTROL_BUFFER_SIZE - offset;
2787 }
2788 } else {
2789 /* Since rndis_wlan_craft_connected_bss() might use info
2790 * later and expects info to contain valid data if
2791 * non-null, free info and set NULL here.
2792 */
2793 kfree(info);
2794 info = NULL;
2795 }
2796 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2797 return;
2798
2799 ret = get_bssid(usbdev, bssid);
2800 if (ret < 0)
2801 memset(bssid, 0, sizeof(bssid));
2802
2803 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2804 bssid, roamed ? " roamed" : "");
2805
2806 /* Internal bss list in device should contain at least the currently
2807 * connected bss and we can get it to cfg80211 with
2808 * rndis_check_bssid_list().
2809 *
2810 * NDIS spec says: "If the device is associated, but the associated
2811 * BSSID is not in its BSSID scan list, then the driver must add an
2812 * entry for the BSSID at the end of the data that it returns in
2813 * response to query of OID_802_11_BSSID_LIST."
2814 *
2815 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2816 */
2817 match_bss = false;
2818 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2819
2820 if (!is_zero_ether_addr(bssid) && !match_bss) {
2821 /* Couldn't get bss from device, we need to manually craft bss
2822 * for cfg80211.
2823 */
2824 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2825 }
2826
2827 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2828 if (!roamed)
2829 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2830 req_ie_len, resp_ie,
2831 resp_ie_len, 0, GFP_KERNEL);
2832 else
2833 cfg80211_roamed(usbdev->net, NULL, bssid,
2834 req_ie, req_ie_len,
2835 resp_ie, resp_ie_len, GFP_KERNEL);
2836 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2837 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2838
2839 if (info != NULL)
2840 kfree(info);
2841
2842 priv->connected = true;
2843 memcpy(priv->bssid, bssid, ETH_ALEN);
2844
2845 usbnet_resume_rx(usbdev);
2846 netif_carrier_on(usbdev->net);
2847}
2848
2849static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2850{
2851 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2852
2853 if (priv->connected) {
2854 priv->connected = false;
2855 memset(priv->bssid, 0, ETH_ALEN);
2856
2857 deauthenticate(usbdev);
2858
2859 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2860 }
2861
2862 netif_carrier_off(usbdev->net);
2863}
2864
2865static void rndis_wlan_worker(struct work_struct *work)
2866{
2867 struct rndis_wlan_private *priv =
2868 container_of(work, struct rndis_wlan_private, work);
2869 struct usbnet *usbdev = priv->usbdev;
2870
2871 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2872 rndis_wlan_do_link_up_work(usbdev);
2873
2874 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2875 rndis_wlan_do_link_down_work(usbdev);
2876
2877 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2878 set_multicast_list(usbdev);
2879}
2880
2881static void rndis_wlan_set_multicast_list(struct net_device *dev)
2882{
2883 struct usbnet *usbdev = netdev_priv(dev);
2884 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2885
2886 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2887 return;
2888
2889 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2890 queue_work(priv->workqueue, &priv->work);
2891}
2892
2893static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2894 struct ndis_80211_status_indication *indication,
2895 int len)
2896{
2897 u8 *buf;
2898 const char *type;
2899 int flags, buflen, key_id;
2900 bool pairwise_error, group_error;
2901 struct ndis_80211_auth_request *auth_req;
2902 enum nl80211_key_type key_type;
2903
2904 /* must have at least one array entry */
2905 if (len < offsetof(struct ndis_80211_status_indication, u) +
2906 sizeof(struct ndis_80211_auth_request)) {
2907 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2908 len);
2909 return;
2910 }
2911
2912 buf = (void *)&indication->u.auth_request[0];
2913 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2914
2915 while (buflen >= sizeof(*auth_req)) {
2916 auth_req = (void *)buf;
2917 type = "unknown";
2918 flags = le32_to_cpu(auth_req->flags);
2919 pairwise_error = false;
2920 group_error = false;
2921
2922 if (flags & 0x1)
2923 type = "reauth request";
2924 if (flags & 0x2)
2925 type = "key update request";
2926 if (flags & 0x6) {
2927 pairwise_error = true;
2928 type = "pairwise_error";
2929 }
2930 if (flags & 0xe) {
2931 group_error = true;
2932 type = "group_error";
2933 }
2934
2935 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2936 type, le32_to_cpu(auth_req->flags));
2937
2938 if (pairwise_error) {
2939 key_type = NL80211_KEYTYPE_PAIRWISE;
2940 key_id = -1;
2941
2942 cfg80211_michael_mic_failure(usbdev->net,
2943 auth_req->bssid,
2944 key_type, key_id, NULL,
2945 GFP_KERNEL);
2946 }
2947
2948 if (group_error) {
2949 key_type = NL80211_KEYTYPE_GROUP;
2950 key_id = -1;
2951
2952 cfg80211_michael_mic_failure(usbdev->net,
2953 auth_req->bssid,
2954 key_type, key_id, NULL,
2955 GFP_KERNEL);
2956 }
2957
2958 buflen -= le32_to_cpu(auth_req->length);
2959 buf += le32_to_cpu(auth_req->length);
2960 }
2961}
2962
2963static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2964 struct ndis_80211_status_indication *indication,
2965 int len)
2966{
2967 struct ndis_80211_pmkid_cand_list *cand_list;
2968 int list_len, expected_len, i;
2969
2970 if (len < offsetof(struct ndis_80211_status_indication, u) +
2971 sizeof(struct ndis_80211_pmkid_cand_list)) {
2972 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2973 len);
2974 return;
2975 }
2976
2977 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2978 sizeof(struct ndis_80211_pmkid_candidate);
2979 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2980 offsetof(struct ndis_80211_status_indication, u);
2981
2982 if (len < expected_len) {
2983 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2984 len, expected_len);
2985 return;
2986 }
2987
2988 cand_list = &indication->u.cand_list;
2989
2990 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2991 le32_to_cpu(cand_list->version),
2992 le32_to_cpu(cand_list->num_candidates));
2993
2994 if (le32_to_cpu(cand_list->version) != 1)
2995 return;
2996
2997 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2998 struct ndis_80211_pmkid_candidate *cand =
2999 &cand_list->candidate_list[i];
3000
3001 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
3002 i, le32_to_cpu(cand->flags), cand->bssid);
3003
3004#if 0
3005 struct iw_pmkid_cand pcand;
3006 union iwreq_data wrqu;
3007
3008 memset(&pcand, 0, sizeof(pcand));
3009 if (le32_to_cpu(cand->flags) & 0x01)
3010 pcand.flags |= IW_PMKID_CAND_PREAUTH;
3011 pcand.index = i;
3012 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
3013
3014 memset(&wrqu, 0, sizeof(wrqu));
3015 wrqu.data.length = sizeof(pcand);
3016 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
3017 (u8 *)&pcand);
3018#endif
3019 }
3020}
3021
3022static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3023 struct rndis_indicate *msg, int buflen)
3024{
3025 struct ndis_80211_status_indication *indication;
3026 int len, offset;
3027
3028 offset = offsetof(struct rndis_indicate, status) +
3029 le32_to_cpu(msg->offset);
3030 len = le32_to_cpu(msg->length);
3031
3032 if (len < 8) {
3033 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3034 len);
3035 return;
3036 }
3037
3038 if (offset + len > buflen) {
3039 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3040 offset + len, buflen);
3041 return;
3042 }
3043
3044 indication = (void *)((u8 *)msg + offset);
3045
3046 switch (le32_to_cpu(indication->status_type)) {
3047 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3048 netdev_info(usbdev->net, "radio state indication: %i\n",
3049 le32_to_cpu(indication->u.radio_status));
3050 return;
3051
3052 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3053 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3054 le32_to_cpu(indication->u.media_stream_mode));
3055 return;
3056
3057 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3058 rndis_wlan_auth_indication(usbdev, indication, len);
3059 return;
3060
3061 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3062 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3063 return;
3064
3065 default:
3066 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3067 le32_to_cpu(indication->status_type));
3068 }
3069}
3070
3071static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3072{
3073 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3074 struct rndis_indicate *msg = ind;
3075
3076 switch (msg->status) {
3077 case RNDIS_STATUS_MEDIA_CONNECT:
3078 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3079 /* OID_802_11_ADD_KEY causes sometimes extra
3080 * "media connect" indications which confuses driver
3081 * and userspace to think that device is
3082 * roaming/reassociating when it isn't.
3083 */
3084 netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3085 return;
3086 }
3087
3088 usbnet_pause_rx(usbdev);
3089
3090 netdev_info(usbdev->net, "media connect\n");
3091
3092 /* queue work to avoid recursive calls into rndis_command */
3093 set_bit(WORK_LINK_UP, &priv->work_pending);
3094 queue_work(priv->workqueue, &priv->work);
3095 break;
3096
3097 case RNDIS_STATUS_MEDIA_DISCONNECT:
3098 netdev_info(usbdev->net, "media disconnect\n");
3099
3100 /* queue work to avoid recursive calls into rndis_command */
3101 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3102 queue_work(priv->workqueue, &priv->work);
3103 break;
3104
3105 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3106 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3107 break;
3108
3109 default:
3110 netdev_info(usbdev->net, "indication: 0x%08x\n",
3111 le32_to_cpu(msg->status));
3112 break;
3113 }
3114}
3115
3116static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3117{
3118 struct {
3119 __le32 num_items;
3120 __le32 items[8];
3121 } networks_supported;
3122 struct ndis_80211_capability *caps;
3123 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3124 int len, retval, i, n;
3125 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3126
3127 /* determine supported modes */
3128 len = sizeof(networks_supported);
3129 retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3130 &networks_supported, &len);
3131 if (retval >= 0) {
3132 n = le32_to_cpu(networks_supported.num_items);
3133 if (n > 8)
3134 n = 8;
3135 for (i = 0; i < n; i++) {
3136 switch (le32_to_cpu(networks_supported.items[i])) {
3137 case NDIS_80211_TYPE_FREQ_HOP:
3138 case NDIS_80211_TYPE_DIRECT_SEQ:
3139 priv->caps |= CAP_MODE_80211B;
3140 break;
3141 case NDIS_80211_TYPE_OFDM_A:
3142 priv->caps |= CAP_MODE_80211A;
3143 break;
3144 case NDIS_80211_TYPE_OFDM_G:
3145 priv->caps |= CAP_MODE_80211G;
3146 break;
3147 }
3148 }
3149 }
3150
3151 /* get device 802.11 capabilities, number of PMKIDs */
3152 caps = (struct ndis_80211_capability *)caps_buf;
3153 len = sizeof(caps_buf);
3154 retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3155 if (retval >= 0) {
3156 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3157 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3158 le32_to_cpu(caps->length),
3159 le32_to_cpu(caps->version),
3160 le32_to_cpu(caps->num_pmkids),
3161 le32_to_cpu(caps->num_auth_encr_pair));
3162 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3163 } else
3164 wiphy->max_num_pmkids = 0;
3165
3166 return retval;
3167}
3168
3169static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3170{
3171 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3172 enum nl80211_cqm_rssi_threshold_event event;
3173 int thold, hyst, last_event;
3174
3175 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3176 return;
3177 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3178 return;
3179
3180 last_event = priv->last_cqm_event_rssi;
3181 thold = priv->cqm_rssi_thold;
3182 hyst = priv->cqm_rssi_hyst;
3183
3184 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3185 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3186 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3187 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3188 else
3189 return;
3190
3191 priv->last_cqm_event_rssi = rssi;
3192 cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3193}
3194
3195#define DEVICE_POLLER_JIFFIES (HZ)
3196static void rndis_device_poller(struct work_struct *work)
3197{
3198 struct rndis_wlan_private *priv =
3199 container_of(work, struct rndis_wlan_private,
3200 dev_poller_work.work);
3201 struct usbnet *usbdev = priv->usbdev;
3202 __le32 rssi, tmp;
3203 int len, ret, j;
3204 int update_jiffies = DEVICE_POLLER_JIFFIES;
3205 void *buf;
3206
3207 /* Only check/do workaround when connected. Calling is_associated()
3208 * also polls device with rndis_command() and catches for media link
3209 * indications.
3210 */
3211 if (!is_associated(usbdev)) {
3212 /* Workaround bad scanning in BCM4320a devices with active
3213 * background scanning when not associated.
3214 */
3215 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3216 !priv->scan_request) {
3217 /* Get previous scan results */
3218 rndis_check_bssid_list(usbdev, NULL, NULL);
3219
3220 /* Initiate new scan */
3221 rndis_start_bssid_list_scan(usbdev);
3222 }
3223
3224 goto end;
3225 }
3226
3227 len = sizeof(rssi);
3228 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3229 if (ret == 0) {
3230 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3231 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3232 }
3233
3234 netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3235 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3236
3237 /* Workaround transfer stalls on poor quality links.
3238 * TODO: find right way to fix these stalls (as stalls do not happen
3239 * with ndiswrapper/windows driver). */
3240 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3241 /* Decrease stats worker interval to catch stalls.
3242 * faster. Faster than 400-500ms causes packet loss,
3243 * Slower doesn't catch stalls fast enough.
3244 */
3245 j = msecs_to_jiffies(priv->param_workaround_interval);
3246 if (j > DEVICE_POLLER_JIFFIES)
3247 j = DEVICE_POLLER_JIFFIES;
3248 else if (j <= 0)
3249 j = 1;
3250 update_jiffies = j;
3251
3252 /* Send scan OID. Use of both OIDs is required to get device
3253 * working.
3254 */
3255 tmp = cpu_to_le32(1);
3256 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3257 sizeof(tmp));
3258
3259 len = CONTROL_BUFFER_SIZE;
3260 buf = kmalloc(len, GFP_KERNEL);
3261 if (!buf)
3262 goto end;
3263
3264 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3265 kfree(buf);
3266 }
3267
3268end:
3269 if (update_jiffies >= HZ)
3270 update_jiffies = round_jiffies_relative(update_jiffies);
3271 else {
3272 j = round_jiffies_relative(update_jiffies);
3273 if (abs(j - update_jiffies) <= 10)
3274 update_jiffies = j;
3275 }
3276
3277 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3278 update_jiffies);
3279}
3280
3281/*
3282 * driver/device initialization
3283 */
3284static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3285{
3286 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3287
3288 priv->device_type = device_type;
3289
3290 priv->param_country[0] = modparam_country[0];
3291 priv->param_country[1] = modparam_country[1];
3292 priv->param_country[2] = 0;
3293 priv->param_frameburst = modparam_frameburst;
3294 priv->param_afterburner = modparam_afterburner;
3295 priv->param_power_save = modparam_power_save;
3296 priv->param_power_output = modparam_power_output;
3297 priv->param_roamtrigger = modparam_roamtrigger;
3298 priv->param_roamdelta = modparam_roamdelta;
3299
3300 priv->param_country[0] = toupper(priv->param_country[0]);
3301 priv->param_country[1] = toupper(priv->param_country[1]);
3302 /* doesn't support EU as country code, use FI instead */
3303 if (!strcmp(priv->param_country, "EU"))
3304 strcpy(priv->param_country, "FI");
3305
3306 if (priv->param_power_save < 0)
3307 priv->param_power_save = 0;
3308 else if (priv->param_power_save > 2)
3309 priv->param_power_save = 2;
3310
3311 if (priv->param_power_output < 0)
3312 priv->param_power_output = 0;
3313 else if (priv->param_power_output > 3)
3314 priv->param_power_output = 3;
3315
3316 if (priv->param_roamtrigger < -80)
3317 priv->param_roamtrigger = -80;
3318 else if (priv->param_roamtrigger > -60)
3319 priv->param_roamtrigger = -60;
3320
3321 if (priv->param_roamdelta < 0)
3322 priv->param_roamdelta = 0;
3323 else if (priv->param_roamdelta > 2)
3324 priv->param_roamdelta = 2;
3325
3326 if (modparam_workaround_interval < 0)
3327 priv->param_workaround_interval = 500;
3328 else
3329 priv->param_workaround_interval = modparam_workaround_interval;
3330}
3331
3332static int unknown_early_init(struct usbnet *usbdev)
3333{
3334 /* copy module parameters for unknown so that iwconfig reports txpower
3335 * and workaround parameter is copied to private structure correctly.
3336 */
3337 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3338
3339 /* This is unknown device, so do not try set configuration parameters.
3340 */
3341
3342 return 0;
3343}
3344
3345static int bcm4320a_early_init(struct usbnet *usbdev)
3346{
3347 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3348 * and workaround parameter is copied to private structure correctly.
3349 */
3350 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3351
3352 /* bcm4320a doesn't handle configuration parameters well. Try
3353 * set any and you get partially zeroed mac and broken device.
3354 */
3355
3356 return 0;
3357}
3358
3359static int bcm4320b_early_init(struct usbnet *usbdev)
3360{
3361 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3362 char buf[8];
3363
3364 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3365
3366 /* Early initialization settings, setting these won't have effect
3367 * if called after generic_rndis_bind().
3368 */
3369
3370 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3371 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3372 priv->param_frameburst ? "1" : "0");
3373 rndis_set_config_parameter_str(usbdev, "Afterburner",
3374 priv->param_afterburner ? "1" : "0");
3375 sprintf(buf, "%d", priv->param_power_save);
3376 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3377 sprintf(buf, "%d", priv->param_power_output);
3378 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3379 sprintf(buf, "%d", priv->param_roamtrigger);
3380 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3381 sprintf(buf, "%d", priv->param_roamdelta);
3382 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3383
3384 return 0;
3385}
3386
3387/* same as rndis_netdev_ops but with local multicast handler */
3388static const struct net_device_ops rndis_wlan_netdev_ops = {
3389 .ndo_open = usbnet_open,
3390 .ndo_stop = usbnet_stop,
3391 .ndo_start_xmit = usbnet_start_xmit,
3392 .ndo_tx_timeout = usbnet_tx_timeout,
3393 .ndo_set_mac_address = eth_mac_addr,
3394 .ndo_validate_addr = eth_validate_addr,
3395 .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
3396};
3397
3398static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3399{
3400 struct wiphy *wiphy;
3401 struct rndis_wlan_private *priv;
3402 int retval, len;
3403 __le32 tmp;
3404
3405 /* allocate wiphy and rndis private data
3406 * NOTE: We only support a single virtual interface, so wiphy
3407 * and wireless_dev are somewhat synonymous for this device.
3408 */
3409 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3410 if (!wiphy)
3411 return -ENOMEM;
3412
3413 priv = wiphy_priv(wiphy);
3414 usbdev->net->ieee80211_ptr = &priv->wdev;
3415 priv->wdev.wiphy = wiphy;
3416 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3417
3418 /* These have to be initialized before calling generic_rndis_bind().
3419 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3420 */
3421 usbdev->driver_priv = priv;
3422 priv->usbdev = usbdev;
3423
3424 mutex_init(&priv->command_lock);
3425
3426 /* because rndis_command() sleeps we need to use workqueue */
3427 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3428 INIT_WORK(&priv->work, rndis_wlan_worker);
3429 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3430 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3431
3432 /* try bind rndis_host */
3433 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3434 if (retval < 0)
3435 goto fail;
3436
3437 /* generic_rndis_bind set packet filter to multicast_all+
3438 * promisc mode which doesn't work well for our devices (device
3439 * picks up rssi to closest station instead of to access point).
3440 *
3441 * rndis_host wants to avoid all OID as much as possible
3442 * so do promisc/multicast handling in rndis_wlan.
3443 */
3444 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3445
3446 tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3447 retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3448 sizeof(tmp));
3449
3450 len = sizeof(tmp);
3451 retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3452 &len);
3453 priv->multicast_size = le32_to_cpu(tmp);
3454 if (retval < 0 || priv->multicast_size < 0)
3455 priv->multicast_size = 0;
3456 if (priv->multicast_size > 0)
3457 usbdev->net->flags |= IFF_MULTICAST;
3458 else
3459 usbdev->net->flags &= ~IFF_MULTICAST;
3460
3461 /* fill-out wiphy structure and register w/ cfg80211 */
3462 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3463 wiphy->privid = rndis_wiphy_privid;
3464 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3465 | BIT(NL80211_IFTYPE_ADHOC);
3466 wiphy->max_scan_ssids = 1;
3467
3468 /* TODO: fill-out band/encr information based on priv->caps */
3469 rndis_wlan_get_caps(usbdev, wiphy);
3470
3471 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3472 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3473 priv->band.channels = priv->channels;
3474 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3475 priv->band.bitrates = priv->rates;
3476 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3477 wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3478 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3479
3480 memcpy(priv->cipher_suites, rndis_cipher_suites,
3481 sizeof(rndis_cipher_suites));
3482 wiphy->cipher_suites = priv->cipher_suites;
3483 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3484
3485 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3486
3487 if (wiphy_register(wiphy)) {
3488 retval = -ENODEV;
3489 goto fail;
3490 }
3491
3492 set_default_iw_params(usbdev);
3493
3494 priv->power_mode = -1;
3495
3496 /* set default rts/frag */
3497 rndis_set_wiphy_params(wiphy,
3498 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3499
3500 /* turn radio off on init */
3501 priv->radio_on = false;
3502 disassociate(usbdev, false);
3503 netif_carrier_off(usbdev->net);
3504
3505 return 0;
3506
3507fail:
3508 cancel_delayed_work_sync(&priv->dev_poller_work);
3509 cancel_delayed_work_sync(&priv->scan_work);
3510 cancel_work_sync(&priv->work);
3511 flush_workqueue(priv->workqueue);
3512 destroy_workqueue(priv->workqueue);
3513
3514 wiphy_free(wiphy);
3515 return retval;
3516}
3517
3518static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3519{
3520 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3521
3522 /* turn radio off */
3523 disassociate(usbdev, false);
3524
3525 cancel_delayed_work_sync(&priv->dev_poller_work);
3526 cancel_delayed_work_sync(&priv->scan_work);
3527 cancel_work_sync(&priv->work);
3528 flush_workqueue(priv->workqueue);
3529 destroy_workqueue(priv->workqueue);
3530
3531 rndis_unbind(usbdev, intf);
3532
3533 wiphy_unregister(priv->wdev.wiphy);
3534 wiphy_free(priv->wdev.wiphy);
3535}
3536
3537static int rndis_wlan_reset(struct usbnet *usbdev)
3538{
3539 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3540 int retval;
3541
3542 netdev_dbg(usbdev->net, "%s()\n", __func__);
3543
3544 retval = rndis_reset(usbdev);
3545 if (retval)
3546 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3547
3548 /* rndis_reset cleared multicast list, so restore here.
3549 (set_multicast_list() also turns on current packet filter) */
3550 set_multicast_list(usbdev);
3551
3552 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3553 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3554
3555 return deauthenticate(usbdev);
3556}
3557
3558static int rndis_wlan_stop(struct usbnet *usbdev)
3559{
3560 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3561 int retval;
3562 __le32 filter;
3563
3564 netdev_dbg(usbdev->net, "%s()\n", __func__);
3565
3566 retval = disassociate(usbdev, false);
3567
3568 priv->work_pending = 0;
3569 cancel_delayed_work_sync(&priv->dev_poller_work);
3570 cancel_delayed_work_sync(&priv->scan_work);
3571 cancel_work_sync(&priv->work);
3572 flush_workqueue(priv->workqueue);
3573
3574 if (priv->scan_request) {
3575 cfg80211_scan_done(priv->scan_request, true);
3576 priv->scan_request = NULL;
3577 }
3578
3579 /* Set current packet filter zero to block receiving data packets from
3580 device. */
3581 filter = 0;
3582 rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3583 sizeof(filter));
3584
3585 return retval;
3586}
3587
3588static const struct driver_info bcm4320b_info = {
3589 .description = "Wireless RNDIS device, BCM4320b based",
3590 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3591 FLAG_AVOID_UNLINK_URBS,
3592 .bind = rndis_wlan_bind,
3593 .unbind = rndis_wlan_unbind,
3594 .status = rndis_status,
3595 .rx_fixup = rndis_rx_fixup,
3596 .tx_fixup = rndis_tx_fixup,
3597 .reset = rndis_wlan_reset,
3598 .stop = rndis_wlan_stop,
3599 .early_init = bcm4320b_early_init,
3600 .indication = rndis_wlan_indication,
3601};
3602
3603static const struct driver_info bcm4320a_info = {
3604 .description = "Wireless RNDIS device, BCM4320a based",
3605 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3606 FLAG_AVOID_UNLINK_URBS,
3607 .bind = rndis_wlan_bind,
3608 .unbind = rndis_wlan_unbind,
3609 .status = rndis_status,
3610 .rx_fixup = rndis_rx_fixup,
3611 .tx_fixup = rndis_tx_fixup,
3612 .reset = rndis_wlan_reset,
3613 .stop = rndis_wlan_stop,
3614 .early_init = bcm4320a_early_init,
3615 .indication = rndis_wlan_indication,
3616};
3617
3618static const struct driver_info rndis_wlan_info = {
3619 .description = "Wireless RNDIS device",
3620 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3621 FLAG_AVOID_UNLINK_URBS,
3622 .bind = rndis_wlan_bind,
3623 .unbind = rndis_wlan_unbind,
3624 .status = rndis_status,
3625 .rx_fixup = rndis_rx_fixup,
3626 .tx_fixup = rndis_tx_fixup,
3627 .reset = rndis_wlan_reset,
3628 .stop = rndis_wlan_stop,
3629 .early_init = unknown_early_init,
3630 .indication = rndis_wlan_indication,
3631};
3632
3633/*-------------------------------------------------------------------------*/
3634
3635static const struct usb_device_id products [] = {
3636#define RNDIS_MASTER_INTERFACE \
3637 .bInterfaceClass = USB_CLASS_COMM, \
3638 .bInterfaceSubClass = 2 /* ACM */, \
3639 .bInterfaceProtocol = 0x0ff
3640
3641/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3642 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3643 */
3644{
3645 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3646 | USB_DEVICE_ID_MATCH_DEVICE,
3647 .idVendor = 0x0411,
3648 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3649 RNDIS_MASTER_INTERFACE,
3650 .driver_info = (unsigned long) &bcm4320b_info,
3651}, {
3652 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3653 | USB_DEVICE_ID_MATCH_DEVICE,
3654 .idVendor = 0x0baf,
3655 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3656 RNDIS_MASTER_INTERFACE,
3657 .driver_info = (unsigned long) &bcm4320b_info,
3658}, {
3659 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3660 | USB_DEVICE_ID_MATCH_DEVICE,
3661 .idVendor = 0x050d,
3662 .idProduct = 0x011b, /* Belkin F5D7051 */
3663 RNDIS_MASTER_INTERFACE,
3664 .driver_info = (unsigned long) &bcm4320b_info,
3665}, {
3666 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3667 | USB_DEVICE_ID_MATCH_DEVICE,
3668 .idVendor = 0x1799, /* Belkin has two vendor ids */
3669 .idProduct = 0x011b, /* Belkin F5D7051 */
3670 RNDIS_MASTER_INTERFACE,
3671 .driver_info = (unsigned long) &bcm4320b_info,
3672}, {
3673 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3674 | USB_DEVICE_ID_MATCH_DEVICE,
3675 .idVendor = 0x13b1,
3676 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3677 RNDIS_MASTER_INTERFACE,
3678 .driver_info = (unsigned long) &bcm4320b_info,
3679}, {
3680 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3681 | USB_DEVICE_ID_MATCH_DEVICE,
3682 .idVendor = 0x13b1,
3683 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3684 RNDIS_MASTER_INTERFACE,
3685 .driver_info = (unsigned long) &bcm4320b_info,
3686}, {
3687 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3688 | USB_DEVICE_ID_MATCH_DEVICE,
3689 .idVendor = 0x0b05,
3690 .idProduct = 0x1717, /* Asus WL169gE */
3691 RNDIS_MASTER_INTERFACE,
3692 .driver_info = (unsigned long) &bcm4320b_info,
3693}, {
3694 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3695 | USB_DEVICE_ID_MATCH_DEVICE,
3696 .idVendor = 0x0a5c,
3697 .idProduct = 0xd11b, /* Eminent EM4045 */
3698 RNDIS_MASTER_INTERFACE,
3699 .driver_info = (unsigned long) &bcm4320b_info,
3700}, {
3701 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3702 | USB_DEVICE_ID_MATCH_DEVICE,
3703 .idVendor = 0x1690,
3704 .idProduct = 0x0715, /* BT Voyager 1055 */
3705 RNDIS_MASTER_INTERFACE,
3706 .driver_info = (unsigned long) &bcm4320b_info,
3707},
3708/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3709 * parameters available, hardware probably contain older firmware version with
3710 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3711 */
3712{
3713 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3714 | USB_DEVICE_ID_MATCH_DEVICE,
3715 .idVendor = 0x13b1,
3716 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3717 RNDIS_MASTER_INTERFACE,
3718 .driver_info = (unsigned long) &bcm4320a_info,
3719}, {
3720 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3721 | USB_DEVICE_ID_MATCH_DEVICE,
3722 .idVendor = 0x0baf,
3723 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3724 RNDIS_MASTER_INTERFACE,
3725 .driver_info = (unsigned long) &bcm4320a_info,
3726}, {
3727 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3728 | USB_DEVICE_ID_MATCH_DEVICE,
3729 .idVendor = 0x0411,
3730 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3731 RNDIS_MASTER_INTERFACE,
3732 .driver_info = (unsigned long) &bcm4320a_info,
3733},
3734/* Generic Wireless RNDIS devices that we don't have exact
3735 * idVendor/idProduct/chip yet.
3736 */
3737{
3738 /* RNDIS is MSFT's un-official variant of CDC ACM */
3739 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3740 .driver_info = (unsigned long) &rndis_wlan_info,
3741}, {
3742 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3743 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3744 .driver_info = (unsigned long) &rndis_wlan_info,
3745},
3746 { }, // END
3747};
3748MODULE_DEVICE_TABLE(usb, products);
3749
3750static struct usb_driver rndis_wlan_driver = {
3751 .name = "rndis_wlan",
3752 .id_table = products,
3753 .probe = usbnet_probe,
3754 .disconnect = usbnet_disconnect,
3755 .suspend = usbnet_suspend,
3756 .resume = usbnet_resume,
3757};
3758
3759static int __init rndis_wlan_init(void)
3760{
3761 return usb_register(&rndis_wlan_driver);
3762}
3763module_init(rndis_wlan_init);
3764
3765static void __exit rndis_wlan_exit(void)
3766{
3767 usb_deregister(&rndis_wlan_driver);
3768}
3769module_exit(rndis_wlan_exit);
3770
3771MODULE_AUTHOR("Bjorge Dijkstra");
3772MODULE_AUTHOR("Jussi Kivilinna");
3773MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3774MODULE_LICENSE("GPL");
3775
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/ieee80211.h>
40#include <linux/if_arp.h>
41#include <linux/ctype.h>
42#include <linux/spinlock.h>
43#include <linux/slab.h>
44#include <net/cfg80211.h>
45#include <linux/usb/usbnet.h>
46#include <linux/usb/rndis_host.h>
47
48
49/* NOTE: All these are settings for Broadcom chipset */
50static char modparam_country[4] = "EU";
51module_param_string(country, modparam_country, 4, 0444);
52MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
53
54static int modparam_frameburst = 1;
55module_param_named(frameburst, modparam_frameburst, int, 0444);
56MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
57
58static int modparam_afterburner = 0;
59module_param_named(afterburner, modparam_afterburner, int, 0444);
60MODULE_PARM_DESC(afterburner,
61 "enable afterburner aka '125 High Speed Mode' (default: off)");
62
63static int modparam_power_save = 0;
64module_param_named(power_save, modparam_power_save, int, 0444);
65MODULE_PARM_DESC(power_save,
66 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
67
68static int modparam_power_output = 3;
69module_param_named(power_output, modparam_power_output, int, 0444);
70MODULE_PARM_DESC(power_output,
71 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
72
73static int modparam_roamtrigger = -70;
74module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
75MODULE_PARM_DESC(roamtrigger,
76 "set roaming dBm trigger: -80=optimize for distance, "
77 "-60=bandwidth (default: -70)");
78
79static int modparam_roamdelta = 1;
80module_param_named(roamdelta, modparam_roamdelta, int, 0444);
81MODULE_PARM_DESC(roamdelta,
82 "set roaming tendency: 0=aggressive, 1=moderate, "
83 "2=conservative (default: moderate)");
84
85static int modparam_workaround_interval;
86module_param_named(workaround_interval, modparam_workaround_interval,
87 int, 0444);
88MODULE_PARM_DESC(workaround_interval,
89 "set stall workaround interval in msecs (0=disabled) (default: 0)");
90
91/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
92#define WL_NOISE -96 /* typical noise level in dBm */
93#define WL_SIGMAX -32 /* typical maximum signal level in dBm */
94
95
96/* Assume that Broadcom 4320 (only chipset at time of writing known to be
97 * based on wireless rndis) has default txpower of 13dBm.
98 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
99 * 100% : 20 mW ~ 13dBm
100 * 75% : 15 mW ~ 12dBm
101 * 50% : 10 mW ~ 10dBm
102 * 25% : 5 mW ~ 7dBm
103 */
104#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
105#define BCM4320_DEFAULT_TXPOWER_DBM_75 12
106#define BCM4320_DEFAULT_TXPOWER_DBM_50 10
107#define BCM4320_DEFAULT_TXPOWER_DBM_25 7
108
109/* Known device types */
110#define RNDIS_UNKNOWN 0
111#define RNDIS_BCM4320A 1
112#define RNDIS_BCM4320B 2
113
114
115/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
116 * slightly modified for datatype endianess, etc
117 */
118#define NDIS_802_11_LENGTH_SSID 32
119#define NDIS_802_11_LENGTH_RATES 8
120#define NDIS_802_11_LENGTH_RATES_EX 16
121
122enum ndis_80211_net_type {
123 NDIS_80211_TYPE_FREQ_HOP,
124 NDIS_80211_TYPE_DIRECT_SEQ,
125 NDIS_80211_TYPE_OFDM_A,
126 NDIS_80211_TYPE_OFDM_G
127};
128
129enum ndis_80211_net_infra {
130 NDIS_80211_INFRA_ADHOC,
131 NDIS_80211_INFRA_INFRA,
132 NDIS_80211_INFRA_AUTO_UNKNOWN
133};
134
135enum ndis_80211_auth_mode {
136 NDIS_80211_AUTH_OPEN,
137 NDIS_80211_AUTH_SHARED,
138 NDIS_80211_AUTH_AUTO_SWITCH,
139 NDIS_80211_AUTH_WPA,
140 NDIS_80211_AUTH_WPA_PSK,
141 NDIS_80211_AUTH_WPA_NONE,
142 NDIS_80211_AUTH_WPA2,
143 NDIS_80211_AUTH_WPA2_PSK
144};
145
146enum ndis_80211_encr_status {
147 NDIS_80211_ENCR_WEP_ENABLED,
148 NDIS_80211_ENCR_DISABLED,
149 NDIS_80211_ENCR_WEP_KEY_ABSENT,
150 NDIS_80211_ENCR_NOT_SUPPORTED,
151 NDIS_80211_ENCR_TKIP_ENABLED,
152 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
153 NDIS_80211_ENCR_CCMP_ENABLED,
154 NDIS_80211_ENCR_CCMP_KEY_ABSENT
155};
156
157enum ndis_80211_priv_filter {
158 NDIS_80211_PRIV_ACCEPT_ALL,
159 NDIS_80211_PRIV_8021X_WEP
160};
161
162enum ndis_80211_status_type {
163 NDIS_80211_STATUSTYPE_AUTHENTICATION,
164 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
165 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
166 NDIS_80211_STATUSTYPE_RADIOSTATE,
167};
168
169enum ndis_80211_media_stream_mode {
170 NDIS_80211_MEDIA_STREAM_OFF,
171 NDIS_80211_MEDIA_STREAM_ON
172};
173
174enum ndis_80211_radio_status {
175 NDIS_80211_RADIO_STATUS_ON,
176 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
177 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
178};
179
180enum ndis_80211_addkey_bits {
181 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
182 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
183 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
184 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
185};
186
187enum ndis_80211_addwep_bits {
188 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
189 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
190};
191
192enum ndis_80211_power_mode {
193 NDIS_80211_POWER_MODE_CAM,
194 NDIS_80211_POWER_MODE_MAX_PSP,
195 NDIS_80211_POWER_MODE_FAST_PSP,
196};
197
198enum ndis_80211_pmkid_cand_list_flag_bits {
199 NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
200};
201
202struct ndis_80211_auth_request {
203 __le32 length;
204 u8 bssid[6];
205 u8 padding[2];
206 __le32 flags;
207} __packed;
208
209struct ndis_80211_pmkid_candidate {
210 u8 bssid[6];
211 u8 padding[2];
212 __le32 flags;
213} __packed;
214
215struct ndis_80211_pmkid_cand_list {
216 __le32 version;
217 __le32 num_candidates;
218 struct ndis_80211_pmkid_candidate candidate_list[0];
219} __packed;
220
221struct ndis_80211_status_indication {
222 __le32 status_type;
223 union {
224 __le32 media_stream_mode;
225 __le32 radio_status;
226 struct ndis_80211_auth_request auth_request[0];
227 struct ndis_80211_pmkid_cand_list cand_list;
228 } u;
229} __packed;
230
231struct ndis_80211_ssid {
232 __le32 length;
233 u8 essid[NDIS_802_11_LENGTH_SSID];
234} __packed;
235
236struct ndis_80211_conf_freq_hop {
237 __le32 length;
238 __le32 hop_pattern;
239 __le32 hop_set;
240 __le32 dwell_time;
241} __packed;
242
243struct ndis_80211_conf {
244 __le32 length;
245 __le32 beacon_period;
246 __le32 atim_window;
247 __le32 ds_config;
248 struct ndis_80211_conf_freq_hop fh_config;
249} __packed;
250
251struct ndis_80211_bssid_ex {
252 __le32 length;
253 u8 mac[6];
254 u8 padding[2];
255 struct ndis_80211_ssid ssid;
256 __le32 privacy;
257 __le32 rssi;
258 __le32 net_type;
259 struct ndis_80211_conf config;
260 __le32 net_infra;
261 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
262 __le32 ie_length;
263 u8 ies[0];
264} __packed;
265
266struct ndis_80211_bssid_list_ex {
267 __le32 num_items;
268 struct ndis_80211_bssid_ex bssid[0];
269} __packed;
270
271struct ndis_80211_fixed_ies {
272 u8 timestamp[8];
273 __le16 beacon_interval;
274 __le16 capabilities;
275} __packed;
276
277struct ndis_80211_wep_key {
278 __le32 size;
279 __le32 index;
280 __le32 length;
281 u8 material[32];
282} __packed;
283
284struct ndis_80211_key {
285 __le32 size;
286 __le32 index;
287 __le32 length;
288 u8 bssid[6];
289 u8 padding[6];
290 u8 rsc[8];
291 u8 material[32];
292} __packed;
293
294struct ndis_80211_remove_key {
295 __le32 size;
296 __le32 index;
297 u8 bssid[6];
298 u8 padding[2];
299} __packed;
300
301struct ndis_config_param {
302 __le32 name_offs;
303 __le32 name_length;
304 __le32 type;
305 __le32 value_offs;
306 __le32 value_length;
307} __packed;
308
309struct ndis_80211_assoc_info {
310 __le32 length;
311 __le16 req_ies;
312 struct req_ie {
313 __le16 capa;
314 __le16 listen_interval;
315 u8 cur_ap_address[6];
316 } req_ie;
317 __le32 req_ie_length;
318 __le32 offset_req_ies;
319 __le16 resp_ies;
320 struct resp_ie {
321 __le16 capa;
322 __le16 status_code;
323 __le16 assoc_id;
324 } resp_ie;
325 __le32 resp_ie_length;
326 __le32 offset_resp_ies;
327} __packed;
328
329struct ndis_80211_auth_encr_pair {
330 __le32 auth_mode;
331 __le32 encr_mode;
332} __packed;
333
334struct ndis_80211_capability {
335 __le32 length;
336 __le32 version;
337 __le32 num_pmkids;
338 __le32 num_auth_encr_pair;
339 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
340} __packed;
341
342struct ndis_80211_bssid_info {
343 u8 bssid[6];
344 u8 pmkid[16];
345} __packed;
346
347struct ndis_80211_pmkid {
348 __le32 length;
349 __le32 bssid_info_count;
350 struct ndis_80211_bssid_info bssid_info[0];
351} __packed;
352
353/*
354 * private data
355 */
356#define CAP_MODE_80211A 1
357#define CAP_MODE_80211B 2
358#define CAP_MODE_80211G 4
359#define CAP_MODE_MASK 7
360
361#define WORK_LINK_UP (1<<0)
362#define WORK_LINK_DOWN (1<<1)
363#define WORK_SET_MULTICAST_LIST (1<<2)
364
365#define RNDIS_WLAN_ALG_NONE 0
366#define RNDIS_WLAN_ALG_WEP (1<<0)
367#define RNDIS_WLAN_ALG_TKIP (1<<1)
368#define RNDIS_WLAN_ALG_CCMP (1<<2)
369
370#define RNDIS_WLAN_NUM_KEYS 4
371#define RNDIS_WLAN_KEY_MGMT_NONE 0
372#define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
373#define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
374
375#define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
376
377static const struct ieee80211_channel rndis_channels[] = {
378 { .center_freq = 2412 },
379 { .center_freq = 2417 },
380 { .center_freq = 2422 },
381 { .center_freq = 2427 },
382 { .center_freq = 2432 },
383 { .center_freq = 2437 },
384 { .center_freq = 2442 },
385 { .center_freq = 2447 },
386 { .center_freq = 2452 },
387 { .center_freq = 2457 },
388 { .center_freq = 2462 },
389 { .center_freq = 2467 },
390 { .center_freq = 2472 },
391 { .center_freq = 2484 },
392};
393
394static const struct ieee80211_rate rndis_rates[] = {
395 { .bitrate = 10 },
396 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
397 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
398 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
399 { .bitrate = 60 },
400 { .bitrate = 90 },
401 { .bitrate = 120 },
402 { .bitrate = 180 },
403 { .bitrate = 240 },
404 { .bitrate = 360 },
405 { .bitrate = 480 },
406 { .bitrate = 540 }
407};
408
409static const u32 rndis_cipher_suites[] = {
410 WLAN_CIPHER_SUITE_WEP40,
411 WLAN_CIPHER_SUITE_WEP104,
412 WLAN_CIPHER_SUITE_TKIP,
413 WLAN_CIPHER_SUITE_CCMP,
414};
415
416struct rndis_wlan_encr_key {
417 int len;
418 u32 cipher;
419 u8 material[32];
420 u8 bssid[ETH_ALEN];
421 bool pairwise;
422 bool tx_key;
423};
424
425/* RNDIS device private data */
426struct rndis_wlan_private {
427 struct usbnet *usbdev;
428
429 struct wireless_dev wdev;
430
431 struct cfg80211_scan_request *scan_request;
432
433 struct workqueue_struct *workqueue;
434 struct delayed_work dev_poller_work;
435 struct delayed_work scan_work;
436 struct work_struct work;
437 struct mutex command_lock;
438 unsigned long work_pending;
439 int last_qual;
440 s32 cqm_rssi_thold;
441 u32 cqm_rssi_hyst;
442 int last_cqm_event_rssi;
443
444 struct ieee80211_supported_band band;
445 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
446 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
447 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
448
449 int device_type;
450 int caps;
451 int multicast_size;
452
453 /* module parameters */
454 char param_country[4];
455 int param_frameburst;
456 int param_afterburner;
457 int param_power_save;
458 int param_power_output;
459 int param_roamtrigger;
460 int param_roamdelta;
461 u32 param_workaround_interval;
462
463 /* hardware state */
464 bool radio_on;
465 int power_mode;
466 int infra_mode;
467 bool connected;
468 u8 bssid[ETH_ALEN];
469 u32 current_command_oid;
470
471 /* encryption stuff */
472 u8 encr_tx_key_index;
473 struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
474 int wpa_version;
475
476 u8 command_buffer[COMMAND_BUFFER_SIZE];
477};
478
479/*
480 * cfg80211 ops
481 */
482static int rndis_change_virtual_intf(struct wiphy *wiphy,
483 struct net_device *dev,
484 enum nl80211_iftype type, u32 *flags,
485 struct vif_params *params);
486
487static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
488 struct cfg80211_scan_request *request);
489
490static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
491
492static int rndis_set_tx_power(struct wiphy *wiphy,
493 enum nl80211_tx_power_setting type,
494 int mbm);
495static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
496
497static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
498 struct cfg80211_connect_params *sme);
499
500static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
501 u16 reason_code);
502
503static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
504 struct cfg80211_ibss_params *params);
505
506static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
507
508static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
509 u8 key_index, bool pairwise, const u8 *mac_addr,
510 struct key_params *params);
511
512static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
513 u8 key_index, bool pairwise, const u8 *mac_addr);
514
515static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
516 u8 key_index, bool unicast, bool multicast);
517
518static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
519 u8 *mac, struct station_info *sinfo);
520
521static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
522 int idx, u8 *mac, struct station_info *sinfo);
523
524static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
525 struct cfg80211_pmksa *pmksa);
526
527static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
528 struct cfg80211_pmksa *pmksa);
529
530static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
531
532static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
533 bool enabled, int timeout);
534
535static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
536 struct net_device *dev,
537 s32 rssi_thold, u32 rssi_hyst);
538
539static const struct cfg80211_ops rndis_config_ops = {
540 .change_virtual_intf = rndis_change_virtual_intf,
541 .scan = rndis_scan,
542 .set_wiphy_params = rndis_set_wiphy_params,
543 .set_tx_power = rndis_set_tx_power,
544 .get_tx_power = rndis_get_tx_power,
545 .connect = rndis_connect,
546 .disconnect = rndis_disconnect,
547 .join_ibss = rndis_join_ibss,
548 .leave_ibss = rndis_leave_ibss,
549 .add_key = rndis_add_key,
550 .del_key = rndis_del_key,
551 .set_default_key = rndis_set_default_key,
552 .get_station = rndis_get_station,
553 .dump_station = rndis_dump_station,
554 .set_pmksa = rndis_set_pmksa,
555 .del_pmksa = rndis_del_pmksa,
556 .flush_pmksa = rndis_flush_pmksa,
557 .set_power_mgmt = rndis_set_power_mgmt,
558 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
559};
560
561static void *rndis_wiphy_privid = &rndis_wiphy_privid;
562
563
564static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
565{
566 return (struct rndis_wlan_private *)dev->driver_priv;
567}
568
569static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
570{
571 switch (priv->param_power_output) {
572 default:
573 case 3:
574 return BCM4320_DEFAULT_TXPOWER_DBM_100;
575 case 2:
576 return BCM4320_DEFAULT_TXPOWER_DBM_75;
577 case 1:
578 return BCM4320_DEFAULT_TXPOWER_DBM_50;
579 case 0:
580 return BCM4320_DEFAULT_TXPOWER_DBM_25;
581 }
582}
583
584static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
585{
586 int cipher = priv->encr_keys[idx].cipher;
587
588 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
589 cipher == WLAN_CIPHER_SUITE_TKIP);
590}
591
592static int rndis_cipher_to_alg(u32 cipher)
593{
594 switch (cipher) {
595 default:
596 return RNDIS_WLAN_ALG_NONE;
597 case WLAN_CIPHER_SUITE_WEP40:
598 case WLAN_CIPHER_SUITE_WEP104:
599 return RNDIS_WLAN_ALG_WEP;
600 case WLAN_CIPHER_SUITE_TKIP:
601 return RNDIS_WLAN_ALG_TKIP;
602 case WLAN_CIPHER_SUITE_CCMP:
603 return RNDIS_WLAN_ALG_CCMP;
604 }
605}
606
607static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
608{
609 switch (akm_suite) {
610 default:
611 return RNDIS_WLAN_KEY_MGMT_NONE;
612 case WLAN_AKM_SUITE_8021X:
613 return RNDIS_WLAN_KEY_MGMT_802_1X;
614 case WLAN_AKM_SUITE_PSK:
615 return RNDIS_WLAN_KEY_MGMT_PSK;
616 }
617}
618
619#ifdef DEBUG
620static const char *oid_to_string(u32 oid)
621{
622 switch (oid) {
623#define OID_STR(oid) case oid: return(#oid)
624 /* from rndis_host.h */
625 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
626 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
627 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
628 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
629
630 /* from rndis_wlan.c */
631 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
632 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
633
634 OID_STR(RNDIS_OID_GEN_XMIT_OK);
635 OID_STR(RNDIS_OID_GEN_RCV_OK);
636 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
637 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
638 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
639
640 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
641 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
642 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
643
644 OID_STR(RNDIS_OID_802_11_BSSID);
645 OID_STR(RNDIS_OID_802_11_SSID);
646 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
647 OID_STR(RNDIS_OID_802_11_ADD_WEP);
648 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
649 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
650 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
651 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
652 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
653 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
654 OID_STR(RNDIS_OID_802_11_ADD_KEY);
655 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
656 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
657 OID_STR(RNDIS_OID_802_11_CAPABILITY);
658 OID_STR(RNDIS_OID_802_11_PMKID);
659 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
660 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
661 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
662 OID_STR(RNDIS_OID_802_11_RSSI);
663 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
664 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
665 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
666 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
667 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
668 OID_STR(RNDIS_OID_802_11_POWER_MODE);
669 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
670#undef OID_STR
671 }
672
673 return "?";
674}
675#else
676static const char *oid_to_string(u32 oid)
677{
678 return "?";
679}
680#endif
681
682/* translate error code */
683static int rndis_error_status(__le32 rndis_status)
684{
685 int ret = -EINVAL;
686 switch (le32_to_cpu(rndis_status)) {
687 case RNDIS_STATUS_SUCCESS:
688 ret = 0;
689 break;
690 case RNDIS_STATUS_FAILURE:
691 case RNDIS_STATUS_INVALID_DATA:
692 ret = -EINVAL;
693 break;
694 case RNDIS_STATUS_NOT_SUPPORTED:
695 ret = -EOPNOTSUPP;
696 break;
697 case RNDIS_STATUS_ADAPTER_NOT_READY:
698 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
699 ret = -EBUSY;
700 break;
701 }
702 return ret;
703}
704
705static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
706{
707 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
708 union {
709 void *buf;
710 struct rndis_msg_hdr *header;
711 struct rndis_query *get;
712 struct rndis_query_c *get_c;
713 } u;
714 int ret, buflen;
715 int resplen, respoffs, copylen;
716
717 buflen = *len + sizeof(*u.get);
718 if (buflen < CONTROL_BUFFER_SIZE)
719 buflen = CONTROL_BUFFER_SIZE;
720
721 if (buflen > COMMAND_BUFFER_SIZE) {
722 u.buf = kmalloc(buflen, GFP_KERNEL);
723 if (!u.buf)
724 return -ENOMEM;
725 } else {
726 u.buf = priv->command_buffer;
727 }
728
729 mutex_lock(&priv->command_lock);
730
731 memset(u.get, 0, sizeof *u.get);
732 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
733 u.get->msg_len = cpu_to_le32(sizeof *u.get);
734 u.get->oid = cpu_to_le32(oid);
735
736 priv->current_command_oid = oid;
737 ret = rndis_command(dev, u.header, buflen);
738 priv->current_command_oid = 0;
739 if (ret < 0)
740 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
741 __func__, oid_to_string(oid), ret,
742 le32_to_cpu(u.get_c->status));
743
744 if (ret == 0) {
745 resplen = le32_to_cpu(u.get_c->len);
746 respoffs = le32_to_cpu(u.get_c->offset) + 8;
747
748 if (respoffs > buflen) {
749 /* Device returned data offset outside buffer, error. */
750 netdev_dbg(dev->net, "%s(%s): received invalid "
751 "data offset: %d > %d\n", __func__,
752 oid_to_string(oid), respoffs, buflen);
753
754 ret = -EINVAL;
755 goto exit_unlock;
756 }
757
758 if ((resplen + respoffs) > buflen) {
759 /* Device would have returned more data if buffer would
760 * have been big enough. Copy just the bits that we got.
761 */
762 copylen = buflen - respoffs;
763 } else {
764 copylen = resplen;
765 }
766
767 if (copylen > *len)
768 copylen = *len;
769
770 memcpy(data, u.buf + respoffs, copylen);
771
772 *len = resplen;
773
774 ret = rndis_error_status(u.get_c->status);
775 if (ret < 0)
776 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
777 __func__, oid_to_string(oid),
778 le32_to_cpu(u.get_c->status), ret);
779 }
780
781exit_unlock:
782 mutex_unlock(&priv->command_lock);
783
784 if (u.buf != priv->command_buffer)
785 kfree(u.buf);
786 return ret;
787}
788
789static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
790 int len)
791{
792 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
793 union {
794 void *buf;
795 struct rndis_msg_hdr *header;
796 struct rndis_set *set;
797 struct rndis_set_c *set_c;
798 } u;
799 int ret, buflen;
800
801 buflen = len + sizeof(*u.set);
802 if (buflen < CONTROL_BUFFER_SIZE)
803 buflen = CONTROL_BUFFER_SIZE;
804
805 if (buflen > COMMAND_BUFFER_SIZE) {
806 u.buf = kmalloc(buflen, GFP_KERNEL);
807 if (!u.buf)
808 return -ENOMEM;
809 } else {
810 u.buf = priv->command_buffer;
811 }
812
813 mutex_lock(&priv->command_lock);
814
815 memset(u.set, 0, sizeof *u.set);
816 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
817 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
818 u.set->oid = cpu_to_le32(oid);
819 u.set->len = cpu_to_le32(len);
820 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
821 u.set->handle = cpu_to_le32(0);
822 memcpy(u.buf + sizeof(*u.set), data, len);
823
824 priv->current_command_oid = oid;
825 ret = rndis_command(dev, u.header, buflen);
826 priv->current_command_oid = 0;
827 if (ret < 0)
828 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
829 __func__, oid_to_string(oid), ret,
830 le32_to_cpu(u.set_c->status));
831
832 if (ret == 0) {
833 ret = rndis_error_status(u.set_c->status);
834
835 if (ret < 0)
836 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
837 __func__, oid_to_string(oid),
838 le32_to_cpu(u.set_c->status), ret);
839 }
840
841 mutex_unlock(&priv->command_lock);
842
843 if (u.buf != priv->command_buffer)
844 kfree(u.buf);
845 return ret;
846}
847
848static int rndis_reset(struct usbnet *usbdev)
849{
850 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
851 struct rndis_reset *reset;
852 int ret;
853
854 mutex_lock(&priv->command_lock);
855
856 reset = (void *)priv->command_buffer;
857 memset(reset, 0, sizeof(*reset));
858 reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
859 reset->msg_len = cpu_to_le32(sizeof(*reset));
860 priv->current_command_oid = 0;
861 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
862
863 mutex_unlock(&priv->command_lock);
864
865 if (ret < 0)
866 return ret;
867 return 0;
868}
869
870/*
871 * Specs say that we can only set config parameters only soon after device
872 * initialization.
873 * value_type: 0 = u32, 2 = unicode string
874 */
875static int rndis_set_config_parameter(struct usbnet *dev, char *param,
876 int value_type, void *value)
877{
878 struct ndis_config_param *infobuf;
879 int value_len, info_len, param_len, ret, i;
880 __le16 *unibuf;
881 __le32 *dst_value;
882
883 if (value_type == 0)
884 value_len = sizeof(__le32);
885 else if (value_type == 2)
886 value_len = strlen(value) * sizeof(__le16);
887 else
888 return -EINVAL;
889
890 param_len = strlen(param) * sizeof(__le16);
891 info_len = sizeof(*infobuf) + param_len + value_len;
892
893#ifdef DEBUG
894 info_len += 12;
895#endif
896 infobuf = kmalloc(info_len, GFP_KERNEL);
897 if (!infobuf)
898 return -ENOMEM;
899
900#ifdef DEBUG
901 info_len -= 12;
902 /* extra 12 bytes are for padding (debug output) */
903 memset(infobuf, 0xCC, info_len + 12);
904#endif
905
906 if (value_type == 2)
907 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
908 param, (u8 *)value);
909 else
910 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
911 param, *(u32 *)value);
912
913 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
914 infobuf->name_length = cpu_to_le32(param_len);
915 infobuf->type = cpu_to_le32(value_type);
916 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
917 infobuf->value_length = cpu_to_le32(value_len);
918
919 /* simple string to unicode string conversion */
920 unibuf = (void *)infobuf + sizeof(*infobuf);
921 for (i = 0; i < param_len / sizeof(__le16); i++)
922 unibuf[i] = cpu_to_le16(param[i]);
923
924 if (value_type == 2) {
925 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
926 for (i = 0; i < value_len / sizeof(__le16); i++)
927 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
928 } else {
929 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
930 *dst_value = cpu_to_le32(*(u32 *)value);
931 }
932
933#ifdef DEBUG
934 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
935 for (i = 0; i < info_len; i += 12) {
936 u32 *tmp = (u32 *)((u8 *)infobuf + i);
937 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
938 cpu_to_be32(tmp[0]),
939 cpu_to_be32(tmp[1]),
940 cpu_to_be32(tmp[2]));
941 }
942#endif
943
944 ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
945 infobuf, info_len);
946 if (ret != 0)
947 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
948 ret);
949
950 kfree(infobuf);
951 return ret;
952}
953
954static int rndis_set_config_parameter_str(struct usbnet *dev,
955 char *param, char *value)
956{
957 return rndis_set_config_parameter(dev, param, 2, value);
958}
959
960/*
961 * data conversion functions
962 */
963static int level_to_qual(int level)
964{
965 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
966 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
967}
968
969/*
970 * common functions
971 */
972static int set_infra_mode(struct usbnet *usbdev, int mode);
973static void restore_keys(struct usbnet *usbdev);
974static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
975 bool *matched);
976
977static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
978{
979 __le32 tmp;
980
981 /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
982 tmp = cpu_to_le32(1);
983 return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
984 sizeof(tmp));
985}
986
987static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
988{
989 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
990 int ret;
991
992 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
993 ssid, sizeof(*ssid));
994 if (ret < 0) {
995 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
996 return ret;
997 }
998 if (ret == 0) {
999 priv->radio_on = true;
1000 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1001 }
1002
1003 return ret;
1004}
1005
1006static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1007{
1008 int ret;
1009
1010 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1011 bssid, ETH_ALEN);
1012 if (ret < 0) {
1013 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1014 bssid, ret);
1015 return ret;
1016 }
1017
1018 return ret;
1019}
1020
1021static int clear_bssid(struct usbnet *usbdev)
1022{
1023 static const u8 broadcast_mac[ETH_ALEN] = {
1024 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1025 };
1026
1027 return set_bssid(usbdev, broadcast_mac);
1028}
1029
1030static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1031{
1032 int ret, len;
1033
1034 len = ETH_ALEN;
1035 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1036 bssid, &len);
1037
1038 if (ret != 0)
1039 memset(bssid, 0, ETH_ALEN);
1040
1041 return ret;
1042}
1043
1044static int get_association_info(struct usbnet *usbdev,
1045 struct ndis_80211_assoc_info *info, int len)
1046{
1047 return rndis_query_oid(usbdev,
1048 RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1049 info, &len);
1050}
1051
1052static bool is_associated(struct usbnet *usbdev)
1053{
1054 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1055 u8 bssid[ETH_ALEN];
1056 int ret;
1057
1058 if (!priv->radio_on)
1059 return false;
1060
1061 ret = get_bssid(usbdev, bssid);
1062
1063 return (ret == 0 && !is_zero_ether_addr(bssid));
1064}
1065
1066static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1067{
1068 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1069 struct ndis_80211_ssid ssid;
1070 int i, ret = 0;
1071
1072 if (priv->radio_on) {
1073 ret = rndis_set_oid(usbdev,
1074 RNDIS_OID_802_11_DISASSOCIATE,
1075 NULL, 0);
1076 if (ret == 0) {
1077 priv->radio_on = false;
1078 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1079 __func__);
1080
1081 if (reset_ssid)
1082 msleep(100);
1083 }
1084 }
1085
1086 /* disassociate causes radio to be turned off; if reset_ssid
1087 * is given, set random ssid to enable radio */
1088 if (reset_ssid) {
1089 /* Set device to infrastructure mode so we don't get ad-hoc
1090 * 'media connect' indications with the random ssid.
1091 */
1092 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1093
1094 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1095 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1096 ssid.essid[0] = 0x1;
1097 ssid.essid[1] = 0xff;
1098 for (i = 2; i < sizeof(ssid.essid); i++)
1099 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1100 ret = set_essid(usbdev, &ssid);
1101 }
1102 return ret;
1103}
1104
1105static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1106 enum nl80211_auth_type auth_type, int keymgmt)
1107{
1108 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1109 __le32 tmp;
1110 int auth_mode, ret;
1111
1112 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1113 __func__, wpa_version, auth_type, keymgmt);
1114
1115 if (wpa_version & NL80211_WPA_VERSION_2) {
1116 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1117 auth_mode = NDIS_80211_AUTH_WPA2;
1118 else
1119 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1120 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1121 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1122 auth_mode = NDIS_80211_AUTH_WPA;
1123 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1124 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1125 else
1126 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1127 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1128 auth_mode = NDIS_80211_AUTH_SHARED;
1129 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1130 auth_mode = NDIS_80211_AUTH_OPEN;
1131 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1132 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1133 else
1134 return -ENOTSUPP;
1135
1136 tmp = cpu_to_le32(auth_mode);
1137 ret = rndis_set_oid(usbdev,
1138 RNDIS_OID_802_11_AUTHENTICATION_MODE,
1139 &tmp, sizeof(tmp));
1140 if (ret != 0) {
1141 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1142 ret);
1143 return ret;
1144 }
1145
1146 priv->wpa_version = wpa_version;
1147
1148 return 0;
1149}
1150
1151static int set_priv_filter(struct usbnet *usbdev)
1152{
1153 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1154 __le32 tmp;
1155
1156 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1157 __func__, priv->wpa_version);
1158
1159 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1160 priv->wpa_version & NL80211_WPA_VERSION_1)
1161 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1162 else
1163 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1164
1165 return rndis_set_oid(usbdev,
1166 RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1167 sizeof(tmp));
1168}
1169
1170static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1171{
1172 __le32 tmp;
1173 int encr_mode, ret;
1174
1175 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1176 __func__, pairwise, groupwise);
1177
1178 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1179 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1180 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1181 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1182 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1183 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1184 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1185 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1186 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1187 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1188 else
1189 encr_mode = NDIS_80211_ENCR_DISABLED;
1190
1191 tmp = cpu_to_le32(encr_mode);
1192 ret = rndis_set_oid(usbdev,
1193 RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1194 sizeof(tmp));
1195 if (ret != 0) {
1196 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1197 ret);
1198 return ret;
1199 }
1200
1201 return 0;
1202}
1203
1204static int set_infra_mode(struct usbnet *usbdev, int mode)
1205{
1206 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1207 __le32 tmp;
1208 int ret;
1209
1210 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1211 __func__, priv->infra_mode);
1212
1213 tmp = cpu_to_le32(mode);
1214 ret = rndis_set_oid(usbdev,
1215 RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1216 &tmp, 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
1232static 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,
1243 RNDIS_OID_802_11_RTS_THRESHOLD,
1244 &tmp, sizeof(tmp));
1245}
1246
1247static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1248{
1249 __le32 tmp;
1250
1251 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1252
1253 if (frag_threshold < 256 || frag_threshold > 2346)
1254 frag_threshold = 2346;
1255
1256 tmp = cpu_to_le32(frag_threshold);
1257 return rndis_set_oid(usbdev,
1258 RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1259 &tmp, sizeof(tmp));
1260}
1261
1262static void set_default_iw_params(struct usbnet *usbdev)
1263{
1264 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1265 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1266 RNDIS_WLAN_KEY_MGMT_NONE);
1267 set_priv_filter(usbdev);
1268 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1269}
1270
1271static int deauthenticate(struct usbnet *usbdev)
1272{
1273 int ret;
1274
1275 ret = disassociate(usbdev, true);
1276 set_default_iw_params(usbdev);
1277 return ret;
1278}
1279
1280static int set_channel(struct usbnet *usbdev, int channel)
1281{
1282 struct ndis_80211_conf config;
1283 unsigned int dsconfig;
1284 int len, ret;
1285
1286 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1287
1288 /* this OID is valid only when not associated */
1289 if (is_associated(usbdev))
1290 return 0;
1291
1292 dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1293
1294 len = sizeof(config);
1295 ret = rndis_query_oid(usbdev,
1296 RNDIS_OID_802_11_CONFIGURATION,
1297 &config, &len);
1298 if (ret < 0) {
1299 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1300 __func__);
1301 return ret;
1302 }
1303
1304 config.ds_config = cpu_to_le32(dsconfig);
1305 ret = rndis_set_oid(usbdev,
1306 RNDIS_OID_802_11_CONFIGURATION,
1307 &config, sizeof(config));
1308
1309 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1310
1311 return ret;
1312}
1313
1314static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1315 u32 *beacon_period)
1316{
1317 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1318 struct ieee80211_channel *channel;
1319 struct ndis_80211_conf config;
1320 int len, ret;
1321
1322 /* Get channel and beacon interval */
1323 len = sizeof(config);
1324 ret = rndis_query_oid(usbdev,
1325 RNDIS_OID_802_11_CONFIGURATION,
1326 &config, &len);
1327 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1328 __func__, ret);
1329 if (ret < 0)
1330 return NULL;
1331
1332 channel = ieee80211_get_channel(priv->wdev.wiphy,
1333 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1334 if (!channel)
1335 return NULL;
1336
1337 if (beacon_period)
1338 *beacon_period = le32_to_cpu(config.beacon_period);
1339 return channel;
1340}
1341
1342/* index must be 0 - N, as per NDIS */
1343static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1344 u8 index)
1345{
1346 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1347 struct ndis_80211_wep_key ndis_key;
1348 u32 cipher;
1349 int ret;
1350
1351 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1352 __func__, index, key_len);
1353
1354 if (index >= RNDIS_WLAN_NUM_KEYS)
1355 return -EINVAL;
1356
1357 if (key_len == 5)
1358 cipher = WLAN_CIPHER_SUITE_WEP40;
1359 else if (key_len == 13)
1360 cipher = WLAN_CIPHER_SUITE_WEP104;
1361 else
1362 return -EINVAL;
1363
1364 memset(&ndis_key, 0, sizeof(ndis_key));
1365
1366 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1367 ndis_key.length = cpu_to_le32(key_len);
1368 ndis_key.index = cpu_to_le32(index);
1369 memcpy(&ndis_key.material, key, key_len);
1370
1371 if (index == priv->encr_tx_key_index) {
1372 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1373 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1374 RNDIS_WLAN_ALG_NONE);
1375 if (ret)
1376 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1377 ret);
1378 }
1379
1380 ret = rndis_set_oid(usbdev,
1381 RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1382 sizeof(ndis_key));
1383 if (ret != 0) {
1384 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1385 index + 1, ret);
1386 return ret;
1387 }
1388
1389 priv->encr_keys[index].len = key_len;
1390 priv->encr_keys[index].cipher = cipher;
1391 memcpy(&priv->encr_keys[index].material, key, key_len);
1392 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1393
1394 return 0;
1395}
1396
1397static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1398 u8 index, const u8 *addr, const u8 *rx_seq,
1399 int seq_len, u32 cipher, __le32 flags)
1400{
1401 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1402 struct ndis_80211_key ndis_key;
1403 bool is_addr_ok;
1404 int ret;
1405
1406 if (index >= RNDIS_WLAN_NUM_KEYS) {
1407 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1408 __func__, index);
1409 return -EINVAL;
1410 }
1411 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1412 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1413 __func__, key_len);
1414 return -EINVAL;
1415 }
1416 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1417 if (!rx_seq || seq_len <= 0) {
1418 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1419 __func__);
1420 return -EINVAL;
1421 }
1422 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1423 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1424 return -EINVAL;
1425 }
1426 }
1427
1428 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1429 !is_broadcast_ether_addr(addr);
1430 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1431 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1432 __func__, addr);
1433 return -EINVAL;
1434 }
1435
1436 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1437 __func__, index,
1438 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1439 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1440 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1441
1442 memset(&ndis_key, 0, sizeof(ndis_key));
1443
1444 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1445 sizeof(ndis_key.material) + key_len);
1446 ndis_key.length = cpu_to_le32(key_len);
1447 ndis_key.index = cpu_to_le32(index) | flags;
1448
1449 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1450 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1451 * different order than NDIS spec, so swap the order here. */
1452 memcpy(ndis_key.material, key, 16);
1453 memcpy(ndis_key.material + 16, key + 24, 8);
1454 memcpy(ndis_key.material + 24, key + 16, 8);
1455 } else
1456 memcpy(ndis_key.material, key, key_len);
1457
1458 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1459 memcpy(ndis_key.rsc, rx_seq, seq_len);
1460
1461 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1462 /* pairwise key */
1463 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1464 } else {
1465 /* group key */
1466 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1467 memset(ndis_key.bssid, 0xff, ETH_ALEN);
1468 else
1469 get_bssid(usbdev, ndis_key.bssid);
1470 }
1471
1472 ret = rndis_set_oid(usbdev,
1473 RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1474 le32_to_cpu(ndis_key.size));
1475 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1476 __func__, ret);
1477 if (ret != 0)
1478 return ret;
1479
1480 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1481 priv->encr_keys[index].len = key_len;
1482 priv->encr_keys[index].cipher = cipher;
1483 memcpy(&priv->encr_keys[index].material, key, key_len);
1484 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1485 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1486 else
1487 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1488
1489 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1490 priv->encr_tx_key_index = index;
1491
1492 return 0;
1493}
1494
1495static int restore_key(struct usbnet *usbdev, u8 key_idx)
1496{
1497 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1498 struct rndis_wlan_encr_key key;
1499
1500 if (is_wpa_key(priv, key_idx))
1501 return 0;
1502
1503 key = priv->encr_keys[key_idx];
1504
1505 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1506
1507 if (key.len == 0)
1508 return 0;
1509
1510 return add_wep_key(usbdev, key.material, key.len, key_idx);
1511}
1512
1513static void restore_keys(struct usbnet *usbdev)
1514{
1515 int i;
1516
1517 for (i = 0; i < 4; i++)
1518 restore_key(usbdev, i);
1519}
1520
1521static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1522{
1523 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1524}
1525
1526/* remove_key is for both wep and wpa */
1527static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1528{
1529 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1530 struct ndis_80211_remove_key remove_key;
1531 __le32 keyindex;
1532 bool is_wpa;
1533 int ret;
1534
1535 if (index >= RNDIS_WLAN_NUM_KEYS)
1536 return -ENOENT;
1537
1538 if (priv->encr_keys[index].len == 0)
1539 return 0;
1540
1541 is_wpa = is_wpa_key(priv, index);
1542
1543 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1544 __func__, index, is_wpa ? "wpa" : "wep",
1545 priv->encr_keys[index].len);
1546
1547 clear_key(priv, index);
1548
1549 if (is_wpa) {
1550 remove_key.size = cpu_to_le32(sizeof(remove_key));
1551 remove_key.index = cpu_to_le32(index);
1552 if (bssid) {
1553 /* pairwise key */
1554 if (!is_broadcast_ether_addr(bssid))
1555 remove_key.index |=
1556 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1557 memcpy(remove_key.bssid, bssid,
1558 sizeof(remove_key.bssid));
1559 } else
1560 memset(remove_key.bssid, 0xff,
1561 sizeof(remove_key.bssid));
1562
1563 ret = rndis_set_oid(usbdev,
1564 RNDIS_OID_802_11_REMOVE_KEY,
1565 &remove_key, sizeof(remove_key));
1566 if (ret != 0)
1567 return ret;
1568 } else {
1569 keyindex = cpu_to_le32(index);
1570 ret = rndis_set_oid(usbdev,
1571 RNDIS_OID_802_11_REMOVE_WEP,
1572 &keyindex, sizeof(keyindex));
1573 if (ret != 0) {
1574 netdev_warn(usbdev->net,
1575 "removing encryption key %d failed (%08X)\n",
1576 index, ret);
1577 return ret;
1578 }
1579 }
1580
1581 /* if it is transmit key, disable encryption */
1582 if (index == priv->encr_tx_key_index)
1583 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1584
1585 return 0;
1586}
1587
1588static void set_multicast_list(struct usbnet *usbdev)
1589{
1590 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1591 struct netdev_hw_addr *ha;
1592 __le32 filter, basefilter;
1593 int ret;
1594 char *mc_addrs = NULL;
1595 int mc_count;
1596
1597 basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1598 RNDIS_PACKET_TYPE_BROADCAST);
1599
1600 if (usbdev->net->flags & IFF_PROMISC) {
1601 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1602 RNDIS_PACKET_TYPE_ALL_LOCAL);
1603 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1604 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1605 }
1606
1607 if (filter != basefilter)
1608 goto set_filter;
1609
1610 /*
1611 * mc_list should be accessed holding the lock, so copy addresses to
1612 * local buffer first.
1613 */
1614 netif_addr_lock_bh(usbdev->net);
1615 mc_count = netdev_mc_count(usbdev->net);
1616 if (mc_count > priv->multicast_size) {
1617 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1618 } else if (mc_count) {
1619 int i = 0;
1620
1621 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1622 if (!mc_addrs) {
1623 netdev_warn(usbdev->net,
1624 "couldn't alloc %d bytes of memory\n",
1625 mc_count * ETH_ALEN);
1626 netif_addr_unlock_bh(usbdev->net);
1627 return;
1628 }
1629
1630 netdev_for_each_mc_addr(ha, usbdev->net)
1631 memcpy(mc_addrs + i++ * ETH_ALEN,
1632 ha->addr, ETH_ALEN);
1633 }
1634 netif_addr_unlock_bh(usbdev->net);
1635
1636 if (filter != basefilter)
1637 goto set_filter;
1638
1639 if (mc_count) {
1640 ret = rndis_set_oid(usbdev,
1641 RNDIS_OID_802_3_MULTICAST_LIST,
1642 mc_addrs, mc_count * ETH_ALEN);
1643 kfree(mc_addrs);
1644 if (ret == 0)
1645 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1646 else
1647 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1648
1649 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1650 mc_count, priv->multicast_size, ret);
1651 }
1652
1653set_filter:
1654 ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1655 sizeof(filter));
1656 if (ret < 0) {
1657 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1658 le32_to_cpu(filter));
1659 }
1660
1661 netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1662 le32_to_cpu(filter), ret);
1663}
1664
1665#ifdef DEBUG
1666static void debug_print_pmkids(struct usbnet *usbdev,
1667 struct ndis_80211_pmkid *pmkids,
1668 const char *func_str)
1669{
1670 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1671 int i, len, count, max_pmkids, entry_len;
1672
1673 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1674 len = le32_to_cpu(pmkids->length);
1675 count = le32_to_cpu(pmkids->bssid_info_count);
1676
1677 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1678
1679 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1680 "%d)\n", func_str, count, len, entry_len);
1681
1682 if (count > max_pmkids)
1683 count = max_pmkids;
1684
1685 for (i = 0; i < count; i++) {
1686 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1687
1688 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1689 "pmkid: %08X:%08X:%08X:%08X\n",
1690 func_str, pmkids->bssid_info[i].bssid,
1691 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1692 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1693 }
1694}
1695#else
1696static void debug_print_pmkids(struct usbnet *usbdev,
1697 struct ndis_80211_pmkid *pmkids,
1698 const char *func_str)
1699{
1700 return;
1701}
1702#endif
1703
1704static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1705{
1706 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1707 struct ndis_80211_pmkid *pmkids;
1708 int len, ret, max_pmkids;
1709
1710 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1711 len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1712
1713 pmkids = kzalloc(len, GFP_KERNEL);
1714 if (!pmkids)
1715 return ERR_PTR(-ENOMEM);
1716
1717 pmkids->length = cpu_to_le32(len);
1718 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1719
1720 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1721 pmkids, &len);
1722 if (ret < 0) {
1723 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1724 " -> %d\n", __func__, len, max_pmkids, ret);
1725
1726 kfree(pmkids);
1727 return ERR_PTR(ret);
1728 }
1729
1730 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1731 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1732
1733 debug_print_pmkids(usbdev, pmkids, __func__);
1734
1735 return pmkids;
1736}
1737
1738static int set_device_pmkids(struct usbnet *usbdev,
1739 struct ndis_80211_pmkid *pmkids)
1740{
1741 int ret, len, num_pmkids;
1742
1743 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1744 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1745 pmkids->length = cpu_to_le32(len);
1746
1747 debug_print_pmkids(usbdev, pmkids, __func__);
1748
1749 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1750 le32_to_cpu(pmkids->length));
1751 if (ret < 0) {
1752 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1753 "\n", __func__, len, num_pmkids, ret);
1754 }
1755
1756 kfree(pmkids);
1757 return ret;
1758}
1759
1760static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1761 struct ndis_80211_pmkid *pmkids,
1762 struct cfg80211_pmksa *pmksa,
1763 int max_pmkids)
1764{
1765 int i, newlen, err;
1766 unsigned int count;
1767
1768 count = le32_to_cpu(pmkids->bssid_info_count);
1769
1770 if (count > max_pmkids)
1771 count = max_pmkids;
1772
1773 for (i = 0; i < count; i++)
1774 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1775 pmksa->bssid))
1776 break;
1777
1778 /* pmkid not found */
1779 if (i == count) {
1780 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1781 __func__, pmksa->bssid);
1782 err = -ENOENT;
1783 goto error;
1784 }
1785
1786 for (; i + 1 < count; i++)
1787 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1788
1789 count--;
1790 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1791
1792 pmkids->length = cpu_to_le32(newlen);
1793 pmkids->bssid_info_count = cpu_to_le32(count);
1794
1795 return pmkids;
1796error:
1797 kfree(pmkids);
1798 return ERR_PTR(err);
1799}
1800
1801static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1802 struct ndis_80211_pmkid *pmkids,
1803 struct cfg80211_pmksa *pmksa,
1804 int max_pmkids)
1805{
1806 int i, err, newlen;
1807 unsigned int count;
1808
1809 count = le32_to_cpu(pmkids->bssid_info_count);
1810
1811 if (count > max_pmkids)
1812 count = max_pmkids;
1813
1814 /* update with new pmkid */
1815 for (i = 0; i < count; i++) {
1816 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1817 pmksa->bssid))
1818 continue;
1819
1820 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1821 WLAN_PMKID_LEN);
1822
1823 return pmkids;
1824 }
1825
1826 /* out of space, return error */
1827 if (i == max_pmkids) {
1828 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1829 err = -ENOSPC;
1830 goto error;
1831 }
1832
1833 /* add new pmkid */
1834 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1835
1836 pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1837 if (!pmkids) {
1838 err = -ENOMEM;
1839 goto error;
1840 }
1841
1842 pmkids->length = cpu_to_le32(newlen);
1843 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1844
1845 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1846 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1847
1848 return pmkids;
1849error:
1850 kfree(pmkids);
1851 return ERR_PTR(err);
1852}
1853
1854/*
1855 * cfg80211 ops
1856 */
1857static int rndis_change_virtual_intf(struct wiphy *wiphy,
1858 struct net_device *dev,
1859 enum nl80211_iftype type, u32 *flags,
1860 struct vif_params *params)
1861{
1862 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1863 struct usbnet *usbdev = priv->usbdev;
1864 int mode;
1865
1866 switch (type) {
1867 case NL80211_IFTYPE_ADHOC:
1868 mode = NDIS_80211_INFRA_ADHOC;
1869 break;
1870 case NL80211_IFTYPE_STATION:
1871 mode = NDIS_80211_INFRA_INFRA;
1872 break;
1873 default:
1874 return -EINVAL;
1875 }
1876
1877 priv->wdev.iftype = type;
1878
1879 return set_infra_mode(usbdev, mode);
1880}
1881
1882static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1883{
1884 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1885 struct usbnet *usbdev = priv->usbdev;
1886 int err;
1887
1888 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1889 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1890 if (err < 0)
1891 return err;
1892 }
1893
1894 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1895 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1896 if (err < 0)
1897 return err;
1898 }
1899
1900 return 0;
1901}
1902
1903static int rndis_set_tx_power(struct wiphy *wiphy,
1904 enum nl80211_tx_power_setting type,
1905 int mbm)
1906{
1907 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1908 struct usbnet *usbdev = priv->usbdev;
1909
1910 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1911 __func__, type, mbm);
1912
1913 if (mbm < 0 || (mbm % 100))
1914 return -ENOTSUPP;
1915
1916 /* Device doesn't support changing txpower after initialization, only
1917 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1918 * currently used.
1919 */
1920 if (type == NL80211_TX_POWER_AUTOMATIC ||
1921 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1922 if (!priv->radio_on)
1923 disassociate(usbdev, true); /* turn on radio */
1924
1925 return 0;
1926 }
1927
1928 return -ENOTSUPP;
1929}
1930
1931static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1932{
1933 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1934 struct usbnet *usbdev = priv->usbdev;
1935
1936 *dbm = get_bcm4320_power_dbm(priv);
1937
1938 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1939
1940 return 0;
1941}
1942
1943#define SCAN_DELAY_JIFFIES (6 * HZ)
1944static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1945 struct cfg80211_scan_request *request)
1946{
1947 struct usbnet *usbdev = netdev_priv(dev);
1948 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1949 int ret;
1950 int delay = SCAN_DELAY_JIFFIES;
1951
1952 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1953
1954 /* Get current bssid list from device before new scan, as new scan
1955 * clears internal bssid list.
1956 */
1957 rndis_check_bssid_list(usbdev, NULL, NULL);
1958
1959 if (!request)
1960 return -EINVAL;
1961
1962 if (priv->scan_request && priv->scan_request != request)
1963 return -EBUSY;
1964
1965 priv->scan_request = request;
1966
1967 ret = rndis_start_bssid_list_scan(usbdev);
1968 if (ret == 0) {
1969 if (priv->device_type == RNDIS_BCM4320A)
1970 delay = HZ;
1971
1972 /* Wait before retrieving scan results from device */
1973 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1974 }
1975
1976 return ret;
1977}
1978
1979static bool rndis_bss_info_update(struct usbnet *usbdev,
1980 struct ndis_80211_bssid_ex *bssid)
1981{
1982 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1983 struct ieee80211_channel *channel;
1984 struct cfg80211_bss *bss;
1985 s32 signal;
1986 u64 timestamp;
1987 u16 capability;
1988 u16 beacon_interval;
1989 struct ndis_80211_fixed_ies *fixed;
1990 int ie_len, bssid_len;
1991 u8 *ie;
1992
1993 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1994 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1995
1996 /* parse bssid structure */
1997 bssid_len = le32_to_cpu(bssid->length);
1998
1999 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2000 sizeof(struct ndis_80211_fixed_ies))
2001 return NULL;
2002
2003 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2004
2005 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2006 ie_len = min(bssid_len - (int)sizeof(*bssid),
2007 (int)le32_to_cpu(bssid->ie_length));
2008 ie_len -= sizeof(struct ndis_80211_fixed_ies);
2009 if (ie_len < 0)
2010 return NULL;
2011
2012 /* extract data for cfg80211_inform_bss */
2013 channel = ieee80211_get_channel(priv->wdev.wiphy,
2014 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2015 if (!channel)
2016 return NULL;
2017
2018 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2019 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2020 capability = le16_to_cpu(fixed->capabilities);
2021 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2022
2023 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2024 timestamp, capability, beacon_interval, ie, ie_len, signal,
2025 GFP_KERNEL);
2026 cfg80211_put_bss(bss);
2027
2028 return (bss != NULL);
2029}
2030
2031static struct ndis_80211_bssid_ex *next_bssid_list_item(
2032 struct ndis_80211_bssid_ex *bssid,
2033 int *bssid_len, void *buf, int len)
2034{
2035 void *buf_end, *bssid_end;
2036
2037 buf_end = (char *)buf + len;
2038 bssid_end = (char *)bssid + *bssid_len;
2039
2040 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2041 *bssid_len = 0;
2042 return NULL;
2043 } else {
2044 bssid = (void *)((char *)bssid + *bssid_len);
2045 *bssid_len = le32_to_cpu(bssid->length);
2046 return bssid;
2047 }
2048}
2049
2050static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2051 int bssid_len, void *buf, int len)
2052{
2053 void *buf_end, *bssid_end;
2054
2055 if (!bssid || bssid_len <= 0 || bssid_len > len)
2056 return false;
2057
2058 buf_end = (char *)buf + len;
2059 bssid_end = (char *)bssid + bssid_len;
2060
2061 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2062}
2063
2064static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2065 bool *matched)
2066{
2067 void *buf = NULL;
2068 struct ndis_80211_bssid_list_ex *bssid_list;
2069 struct ndis_80211_bssid_ex *bssid;
2070 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2071
2072 netdev_dbg(usbdev->net, "%s()\n", __func__);
2073
2074 len = CONTROL_BUFFER_SIZE;
2075resize_buf:
2076 buf = kzalloc(len, GFP_KERNEL);
2077 if (!buf) {
2078 ret = -ENOMEM;
2079 goto out;
2080 }
2081
2082 /* BSSID-list might have got bigger last time we checked, keep
2083 * resizing until it won't get any bigger.
2084 */
2085 new_len = len;
2086 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2087 buf, &new_len);
2088 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2089 goto out;
2090
2091 if (new_len > len) {
2092 len = new_len;
2093 kfree(buf);
2094 goto resize_buf;
2095 }
2096
2097 len = new_len;
2098
2099 bssid_list = buf;
2100 count = le32_to_cpu(bssid_list->num_items);
2101 real_count = 0;
2102 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2103
2104 bssid_len = 0;
2105 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2106
2107 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2108 * received 'num_items' and walking through full bssid buffer instead.
2109 */
2110 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2111 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2112 matched) {
2113 if (ether_addr_equal(bssid->mac, match_bssid))
2114 *matched = true;
2115 }
2116
2117 real_count++;
2118 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2119 }
2120
2121 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2122 " %d\n", __func__, count, real_count);
2123
2124out:
2125 kfree(buf);
2126 return ret;
2127}
2128
2129static void rndis_get_scan_results(struct work_struct *work)
2130{
2131 struct rndis_wlan_private *priv =
2132 container_of(work, struct rndis_wlan_private, scan_work.work);
2133 struct usbnet *usbdev = priv->usbdev;
2134 int ret;
2135
2136 netdev_dbg(usbdev->net, "get_scan_results\n");
2137
2138 if (!priv->scan_request)
2139 return;
2140
2141 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2142
2143 cfg80211_scan_done(priv->scan_request, ret < 0);
2144
2145 priv->scan_request = NULL;
2146}
2147
2148static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2149 struct cfg80211_connect_params *sme)
2150{
2151 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2152 struct usbnet *usbdev = priv->usbdev;
2153 struct ieee80211_channel *channel = sme->channel;
2154 struct ndis_80211_ssid ssid;
2155 int pairwise = RNDIS_WLAN_ALG_NONE;
2156 int groupwise = RNDIS_WLAN_ALG_NONE;
2157 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2158 int length, i, ret, chan = -1;
2159
2160 if (channel)
2161 chan = ieee80211_frequency_to_channel(channel->center_freq);
2162
2163 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2164 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2165 pairwise |=
2166 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2167
2168 if (sme->crypto.n_ciphers_pairwise > 0 &&
2169 pairwise == RNDIS_WLAN_ALG_NONE) {
2170 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2171 return -ENOTSUPP;
2172 }
2173
2174 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2175 keymgmt |=
2176 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2177
2178 if (sme->crypto.n_akm_suites > 0 &&
2179 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2180 netdev_err(usbdev->net, "Invalid keymgmt\n");
2181 return -ENOTSUPP;
2182 }
2183
2184 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2185 sme->ssid, sme->bssid, chan,
2186 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2187 groupwise, pairwise, keymgmt);
2188
2189 if (is_associated(usbdev))
2190 disassociate(usbdev, false);
2191
2192 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2193 if (ret < 0) {
2194 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2195 ret);
2196 goto err_turn_radio_on;
2197 }
2198
2199 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2200 keymgmt);
2201 if (ret < 0) {
2202 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2203 ret);
2204 goto err_turn_radio_on;
2205 }
2206
2207 set_priv_filter(usbdev);
2208
2209 ret = set_encr_mode(usbdev, pairwise, groupwise);
2210 if (ret < 0) {
2211 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2212 ret);
2213 goto err_turn_radio_on;
2214 }
2215
2216 if (channel) {
2217 ret = set_channel(usbdev, chan);
2218 if (ret < 0) {
2219 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2220 ret);
2221 goto err_turn_radio_on;
2222 }
2223 }
2224
2225 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2226 priv->encr_tx_key_index = sme->key_idx;
2227 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2228 if (ret < 0) {
2229 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2230 ret, sme->key_len, sme->key_idx);
2231 goto err_turn_radio_on;
2232 }
2233 }
2234
2235 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2236 !is_broadcast_ether_addr(sme->bssid)) {
2237 ret = set_bssid(usbdev, sme->bssid);
2238 if (ret < 0) {
2239 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2240 ret);
2241 goto err_turn_radio_on;
2242 }
2243 } else
2244 clear_bssid(usbdev);
2245
2246 length = sme->ssid_len;
2247 if (length > NDIS_802_11_LENGTH_SSID)
2248 length = NDIS_802_11_LENGTH_SSID;
2249
2250 memset(&ssid, 0, sizeof(ssid));
2251 ssid.length = cpu_to_le32(length);
2252 memcpy(ssid.essid, sme->ssid, length);
2253
2254 /* Pause and purge rx queue, so we don't pass packets before
2255 * 'media connect'-indication.
2256 */
2257 usbnet_pause_rx(usbdev);
2258 usbnet_purge_paused_rxq(usbdev);
2259
2260 ret = set_essid(usbdev, &ssid);
2261 if (ret < 0)
2262 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2263 return ret;
2264
2265err_turn_radio_on:
2266 disassociate(usbdev, true);
2267
2268 return ret;
2269}
2270
2271static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2272 u16 reason_code)
2273{
2274 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2275 struct usbnet *usbdev = priv->usbdev;
2276
2277 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2278
2279 priv->connected = false;
2280 memset(priv->bssid, 0, ETH_ALEN);
2281
2282 return deauthenticate(usbdev);
2283}
2284
2285static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2286 struct cfg80211_ibss_params *params)
2287{
2288 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2289 struct usbnet *usbdev = priv->usbdev;
2290 struct ieee80211_channel *channel = params->channel;
2291 struct ndis_80211_ssid ssid;
2292 enum nl80211_auth_type auth_type;
2293 int ret, alg, length, chan = -1;
2294
2295 if (channel)
2296 chan = ieee80211_frequency_to_channel(channel->center_freq);
2297
2298 /* TODO: How to handle ad-hoc encryption?
2299 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2300 * pre-shared for encryption (open/shared/wpa), is key set before
2301 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2302 */
2303 if (params->privacy) {
2304 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2305 alg = RNDIS_WLAN_ALG_WEP;
2306 } else {
2307 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2308 alg = RNDIS_WLAN_ALG_NONE;
2309 }
2310
2311 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2312 params->ssid, params->bssid, chan, params->privacy);
2313
2314 if (is_associated(usbdev))
2315 disassociate(usbdev, false);
2316
2317 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2318 if (ret < 0) {
2319 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2320 ret);
2321 goto err_turn_radio_on;
2322 }
2323
2324 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2325 if (ret < 0) {
2326 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2327 ret);
2328 goto err_turn_radio_on;
2329 }
2330
2331 set_priv_filter(usbdev);
2332
2333 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2334 if (ret < 0) {
2335 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2336 ret);
2337 goto err_turn_radio_on;
2338 }
2339
2340 if (channel) {
2341 ret = set_channel(usbdev, chan);
2342 if (ret < 0) {
2343 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2344 ret);
2345 goto err_turn_radio_on;
2346 }
2347 }
2348
2349 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2350 !is_broadcast_ether_addr(params->bssid)) {
2351 ret = set_bssid(usbdev, params->bssid);
2352 if (ret < 0) {
2353 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2354 ret);
2355 goto err_turn_radio_on;
2356 }
2357 } else
2358 clear_bssid(usbdev);
2359
2360 length = params->ssid_len;
2361 if (length > NDIS_802_11_LENGTH_SSID)
2362 length = NDIS_802_11_LENGTH_SSID;
2363
2364 memset(&ssid, 0, sizeof(ssid));
2365 ssid.length = cpu_to_le32(length);
2366 memcpy(ssid.essid, params->ssid, length);
2367
2368 /* Don't need to pause rx queue for ad-hoc. */
2369 usbnet_purge_paused_rxq(usbdev);
2370 usbnet_resume_rx(usbdev);
2371
2372 ret = set_essid(usbdev, &ssid);
2373 if (ret < 0)
2374 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2375 ret);
2376 return ret;
2377
2378err_turn_radio_on:
2379 disassociate(usbdev, true);
2380
2381 return ret;
2382}
2383
2384static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2385{
2386 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2387 struct usbnet *usbdev = priv->usbdev;
2388
2389 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2390
2391 priv->connected = false;
2392 memset(priv->bssid, 0, ETH_ALEN);
2393
2394 return deauthenticate(usbdev);
2395}
2396
2397static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2398 u8 key_index, bool pairwise, const u8 *mac_addr,
2399 struct key_params *params)
2400{
2401 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2402 struct usbnet *usbdev = priv->usbdev;
2403 __le32 flags;
2404
2405 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2406 __func__, key_index, mac_addr, params->cipher);
2407
2408 switch (params->cipher) {
2409 case WLAN_CIPHER_SUITE_WEP40:
2410 case WLAN_CIPHER_SUITE_WEP104:
2411 return add_wep_key(usbdev, params->key, params->key_len,
2412 key_index);
2413 case WLAN_CIPHER_SUITE_TKIP:
2414 case WLAN_CIPHER_SUITE_CCMP:
2415 flags = 0;
2416
2417 if (params->seq && params->seq_len > 0)
2418 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2419 if (mac_addr)
2420 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2421 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2422
2423 return add_wpa_key(usbdev, params->key, params->key_len,
2424 key_index, mac_addr, params->seq,
2425 params->seq_len, params->cipher, flags);
2426 default:
2427 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2428 __func__, params->cipher);
2429 return -ENOTSUPP;
2430 }
2431}
2432
2433static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2434 u8 key_index, bool pairwise, const u8 *mac_addr)
2435{
2436 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2437 struct usbnet *usbdev = priv->usbdev;
2438
2439 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2440
2441 return remove_key(usbdev, key_index, mac_addr);
2442}
2443
2444static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2445 u8 key_index, bool unicast, bool multicast)
2446{
2447 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2448 struct usbnet *usbdev = priv->usbdev;
2449 struct rndis_wlan_encr_key key;
2450
2451 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2452
2453 if (key_index >= RNDIS_WLAN_NUM_KEYS)
2454 return -ENOENT;
2455
2456 priv->encr_tx_key_index = key_index;
2457
2458 if (is_wpa_key(priv, key_index))
2459 return 0;
2460
2461 key = priv->encr_keys[key_index];
2462
2463 return add_wep_key(usbdev, key.material, key.len, key_index);
2464}
2465
2466static void rndis_fill_station_info(struct usbnet *usbdev,
2467 struct station_info *sinfo)
2468{
2469 __le32 linkspeed, rssi;
2470 int ret, len;
2471
2472 memset(sinfo, 0, sizeof(*sinfo));
2473
2474 len = sizeof(linkspeed);
2475 ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2476 if (ret == 0) {
2477 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2478 sinfo->filled |= STATION_INFO_TX_BITRATE;
2479 }
2480
2481 len = sizeof(rssi);
2482 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2483 &rssi, &len);
2484 if (ret == 0) {
2485 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2486 sinfo->filled |= STATION_INFO_SIGNAL;
2487 }
2488}
2489
2490static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2491 u8 *mac, struct station_info *sinfo)
2492{
2493 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2494 struct usbnet *usbdev = priv->usbdev;
2495
2496 if (!ether_addr_equal(priv->bssid, mac))
2497 return -ENOENT;
2498
2499 rndis_fill_station_info(usbdev, sinfo);
2500
2501 return 0;
2502}
2503
2504static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2505 int idx, u8 *mac, struct station_info *sinfo)
2506{
2507 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2508 struct usbnet *usbdev = priv->usbdev;
2509
2510 if (idx != 0)
2511 return -ENOENT;
2512
2513 memcpy(mac, priv->bssid, ETH_ALEN);
2514
2515 rndis_fill_station_info(usbdev, sinfo);
2516
2517 return 0;
2518}
2519
2520static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2521 struct cfg80211_pmksa *pmksa)
2522{
2523 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2524 struct usbnet *usbdev = priv->usbdev;
2525 struct ndis_80211_pmkid *pmkids;
2526 u32 *tmp = (u32 *)pmksa->pmkid;
2527
2528 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2529 pmksa->bssid,
2530 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2531 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2532
2533 pmkids = get_device_pmkids(usbdev);
2534 if (IS_ERR(pmkids)) {
2535 /* couldn't read PMKID cache from device */
2536 return PTR_ERR(pmkids);
2537 }
2538
2539 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2540 if (IS_ERR(pmkids)) {
2541 /* not found, list full, etc */
2542 return PTR_ERR(pmkids);
2543 }
2544
2545 return set_device_pmkids(usbdev, pmkids);
2546}
2547
2548static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2549 struct cfg80211_pmksa *pmksa)
2550{
2551 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2552 struct usbnet *usbdev = priv->usbdev;
2553 struct ndis_80211_pmkid *pmkids;
2554 u32 *tmp = (u32 *)pmksa->pmkid;
2555
2556 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2557 pmksa->bssid,
2558 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2559 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2560
2561 pmkids = get_device_pmkids(usbdev);
2562 if (IS_ERR(pmkids)) {
2563 /* Couldn't read PMKID cache from device */
2564 return PTR_ERR(pmkids);
2565 }
2566
2567 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2568 if (IS_ERR(pmkids)) {
2569 /* not found, etc */
2570 return PTR_ERR(pmkids);
2571 }
2572
2573 return set_device_pmkids(usbdev, pmkids);
2574}
2575
2576static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2577{
2578 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2579 struct usbnet *usbdev = priv->usbdev;
2580 struct ndis_80211_pmkid pmkid;
2581
2582 netdev_dbg(usbdev->net, "%s()\n", __func__);
2583
2584 memset(&pmkid, 0, sizeof(pmkid));
2585
2586 pmkid.length = cpu_to_le32(sizeof(pmkid));
2587 pmkid.bssid_info_count = cpu_to_le32(0);
2588
2589 return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2590 &pmkid, sizeof(pmkid));
2591}
2592
2593static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2594 bool enabled, int timeout)
2595{
2596 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2597 struct usbnet *usbdev = priv->usbdev;
2598 int power_mode;
2599 __le32 mode;
2600 int ret;
2601
2602 if (priv->device_type != RNDIS_BCM4320B)
2603 return -ENOTSUPP;
2604
2605 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2606 enabled ? "enabled" : "disabled",
2607 timeout);
2608
2609 if (enabled)
2610 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2611 else
2612 power_mode = NDIS_80211_POWER_MODE_CAM;
2613
2614 if (power_mode == priv->power_mode)
2615 return 0;
2616
2617 priv->power_mode = power_mode;
2618
2619 mode = cpu_to_le32(power_mode);
2620 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2621 &mode, sizeof(mode));
2622
2623 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2624 __func__, ret);
2625
2626 return ret;
2627}
2628
2629static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2630 struct net_device *dev,
2631 s32 rssi_thold, u32 rssi_hyst)
2632{
2633 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2634
2635 priv->cqm_rssi_thold = rssi_thold;
2636 priv->cqm_rssi_hyst = rssi_hyst;
2637 priv->last_cqm_event_rssi = 0;
2638
2639 return 0;
2640}
2641
2642static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2643 struct ndis_80211_assoc_info *info)
2644{
2645 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2646 struct ieee80211_channel *channel;
2647 struct ndis_80211_ssid ssid;
2648 struct cfg80211_bss *bss;
2649 s32 signal;
2650 u64 timestamp;
2651 u16 capability;
2652 u32 beacon_period = 0;
2653 __le32 rssi;
2654 u8 ie_buf[34];
2655 int len, ret, ie_len;
2656
2657 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2658 len = sizeof(rssi);
2659 rssi = 0;
2660 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2661 &rssi, &len);
2662 signal = level_to_qual(le32_to_cpu(rssi));
2663
2664 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2665 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2666 level_to_qual(le32_to_cpu(rssi)));
2667
2668 /* Get AP capabilities */
2669 if (info) {
2670 capability = le16_to_cpu(info->resp_ie.capa);
2671 } else {
2672 /* Set atleast ESS/IBSS capability */
2673 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2674 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2675 }
2676
2677 /* Get channel and beacon interval */
2678 channel = get_current_channel(usbdev, &beacon_period);
2679 if (!channel) {
2680 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2681 __func__);
2682 return;
2683 }
2684
2685 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2686 len = sizeof(ssid);
2687 memset(&ssid, 0, sizeof(ssid));
2688 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2689 &ssid, &len);
2690 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2691 "'%.32s'\n", __func__, ret,
2692 le32_to_cpu(ssid.length), ssid.essid);
2693
2694 if (le32_to_cpu(ssid.length) > 32)
2695 ssid.length = cpu_to_le32(32);
2696
2697 ie_buf[0] = WLAN_EID_SSID;
2698 ie_buf[1] = le32_to_cpu(ssid.length);
2699 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2700
2701 ie_len = le32_to_cpu(ssid.length) + 2;
2702
2703 /* no tsf */
2704 timestamp = 0;
2705
2706 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2707 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2708 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2709 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2710 ssid.essid, signal);
2711
2712 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2713 timestamp, capability, beacon_period, ie_buf, ie_len,
2714 signal, GFP_KERNEL);
2715 cfg80211_put_bss(bss);
2716}
2717
2718/*
2719 * workers, indication handlers, device poller
2720 */
2721static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2722{
2723 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2724 struct ndis_80211_assoc_info *info = NULL;
2725 u8 bssid[ETH_ALEN];
2726 unsigned int resp_ie_len, req_ie_len;
2727 unsigned int offset;
2728 u8 *req_ie, *resp_ie;
2729 int ret;
2730 bool roamed = false;
2731 bool match_bss;
2732
2733 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2734 /* received media connect indication while connected, either
2735 * device reassociated with same AP or roamed to new. */
2736 roamed = true;
2737 }
2738
2739 req_ie_len = 0;
2740 resp_ie_len = 0;
2741 req_ie = NULL;
2742 resp_ie = NULL;
2743
2744 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2745 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2746 if (!info) {
2747 /* No memory? Try resume work later */
2748 set_bit(WORK_LINK_UP, &priv->work_pending);
2749 queue_work(priv->workqueue, &priv->work);
2750 return;
2751 }
2752
2753 /* Get association info IEs from device. */
2754 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2755 if (!ret) {
2756 req_ie_len = le32_to_cpu(info->req_ie_length);
2757 if (req_ie_len > CONTROL_BUFFER_SIZE)
2758 req_ie_len = CONTROL_BUFFER_SIZE;
2759 if (req_ie_len != 0) {
2760 offset = le32_to_cpu(info->offset_req_ies);
2761
2762 if (offset > CONTROL_BUFFER_SIZE)
2763 offset = CONTROL_BUFFER_SIZE;
2764
2765 req_ie = (u8 *)info + offset;
2766
2767 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2768 req_ie_len =
2769 CONTROL_BUFFER_SIZE - offset;
2770 }
2771
2772 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2773 if (resp_ie_len > CONTROL_BUFFER_SIZE)
2774 resp_ie_len = CONTROL_BUFFER_SIZE;
2775 if (resp_ie_len != 0) {
2776 offset = le32_to_cpu(info->offset_resp_ies);
2777
2778 if (offset > CONTROL_BUFFER_SIZE)
2779 offset = CONTROL_BUFFER_SIZE;
2780
2781 resp_ie = (u8 *)info + offset;
2782
2783 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2784 resp_ie_len =
2785 CONTROL_BUFFER_SIZE - offset;
2786 }
2787 } else {
2788 /* Since rndis_wlan_craft_connected_bss() might use info
2789 * later and expects info to contain valid data if
2790 * non-null, free info and set NULL here.
2791 */
2792 kfree(info);
2793 info = NULL;
2794 }
2795 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2796 return;
2797
2798 ret = get_bssid(usbdev, bssid);
2799 if (ret < 0)
2800 memset(bssid, 0, sizeof(bssid));
2801
2802 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2803 bssid, roamed ? " roamed" : "");
2804
2805 /* Internal bss list in device should contain at least the currently
2806 * connected bss and we can get it to cfg80211 with
2807 * rndis_check_bssid_list().
2808 *
2809 * NDIS spec says: "If the device is associated, but the associated
2810 * BSSID is not in its BSSID scan list, then the driver must add an
2811 * entry for the BSSID at the end of the data that it returns in
2812 * response to query of RNDIS_OID_802_11_BSSID_LIST."
2813 *
2814 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2815 */
2816 match_bss = false;
2817 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2818
2819 if (!is_zero_ether_addr(bssid) && !match_bss) {
2820 /* Couldn't get bss from device, we need to manually craft bss
2821 * for cfg80211.
2822 */
2823 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2824 }
2825
2826 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2827 if (!roamed)
2828 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2829 req_ie_len, resp_ie,
2830 resp_ie_len, 0, GFP_KERNEL);
2831 else
2832 cfg80211_roamed(usbdev->net,
2833 get_current_channel(usbdev, NULL),
2834 bssid, req_ie, req_ie_len,
2835 resp_ie, resp_ie_len, GFP_KERNEL);
2836 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2837 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2838
2839 if (info != NULL)
2840 kfree(info);
2841
2842 priv->connected = true;
2843 memcpy(priv->bssid, bssid, ETH_ALEN);
2844
2845 usbnet_resume_rx(usbdev);
2846 netif_carrier_on(usbdev->net);
2847}
2848
2849static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2850{
2851 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2852
2853 if (priv->connected) {
2854 priv->connected = false;
2855 memset(priv->bssid, 0, ETH_ALEN);
2856
2857 deauthenticate(usbdev);
2858
2859 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2860 }
2861
2862 netif_carrier_off(usbdev->net);
2863}
2864
2865static void rndis_wlan_worker(struct work_struct *work)
2866{
2867 struct rndis_wlan_private *priv =
2868 container_of(work, struct rndis_wlan_private, work);
2869 struct usbnet *usbdev = priv->usbdev;
2870
2871 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2872 rndis_wlan_do_link_up_work(usbdev);
2873
2874 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2875 rndis_wlan_do_link_down_work(usbdev);
2876
2877 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2878 set_multicast_list(usbdev);
2879}
2880
2881static void rndis_wlan_set_multicast_list(struct net_device *dev)
2882{
2883 struct usbnet *usbdev = netdev_priv(dev);
2884 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2885
2886 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2887 return;
2888
2889 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2890 queue_work(priv->workqueue, &priv->work);
2891}
2892
2893static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2894 struct ndis_80211_status_indication *indication,
2895 int len)
2896{
2897 u8 *buf;
2898 const char *type;
2899 int flags, buflen, key_id;
2900 bool pairwise_error, group_error;
2901 struct ndis_80211_auth_request *auth_req;
2902 enum nl80211_key_type key_type;
2903
2904 /* must have at least one array entry */
2905 if (len < offsetof(struct ndis_80211_status_indication, u) +
2906 sizeof(struct ndis_80211_auth_request)) {
2907 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2908 len);
2909 return;
2910 }
2911
2912 buf = (void *)&indication->u.auth_request[0];
2913 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2914
2915 while (buflen >= sizeof(*auth_req)) {
2916 auth_req = (void *)buf;
2917 type = "unknown";
2918 flags = le32_to_cpu(auth_req->flags);
2919 pairwise_error = false;
2920 group_error = false;
2921
2922 if (flags & 0x1)
2923 type = "reauth request";
2924 if (flags & 0x2)
2925 type = "key update request";
2926 if (flags & 0x6) {
2927 pairwise_error = true;
2928 type = "pairwise_error";
2929 }
2930 if (flags & 0xe) {
2931 group_error = true;
2932 type = "group_error";
2933 }
2934
2935 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2936 type, le32_to_cpu(auth_req->flags));
2937
2938 if (pairwise_error) {
2939 key_type = NL80211_KEYTYPE_PAIRWISE;
2940 key_id = -1;
2941
2942 cfg80211_michael_mic_failure(usbdev->net,
2943 auth_req->bssid,
2944 key_type, key_id, NULL,
2945 GFP_KERNEL);
2946 }
2947
2948 if (group_error) {
2949 key_type = NL80211_KEYTYPE_GROUP;
2950 key_id = -1;
2951
2952 cfg80211_michael_mic_failure(usbdev->net,
2953 auth_req->bssid,
2954 key_type, key_id, NULL,
2955 GFP_KERNEL);
2956 }
2957
2958 buflen -= le32_to_cpu(auth_req->length);
2959 buf += le32_to_cpu(auth_req->length);
2960 }
2961}
2962
2963static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2964 struct ndis_80211_status_indication *indication,
2965 int len)
2966{
2967 struct ndis_80211_pmkid_cand_list *cand_list;
2968 int list_len, expected_len, i;
2969
2970 if (len < offsetof(struct ndis_80211_status_indication, u) +
2971 sizeof(struct ndis_80211_pmkid_cand_list)) {
2972 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2973 len);
2974 return;
2975 }
2976
2977 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2978 sizeof(struct ndis_80211_pmkid_candidate);
2979 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2980 offsetof(struct ndis_80211_status_indication, u);
2981
2982 if (len < expected_len) {
2983 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2984 len, expected_len);
2985 return;
2986 }
2987
2988 cand_list = &indication->u.cand_list;
2989
2990 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2991 le32_to_cpu(cand_list->version),
2992 le32_to_cpu(cand_list->num_candidates));
2993
2994 if (le32_to_cpu(cand_list->version) != 1)
2995 return;
2996
2997 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2998 struct ndis_80211_pmkid_candidate *cand =
2999 &cand_list->candidate_list[i];
3000 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3001
3002 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3003 i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3004
3005 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3006 preauth, GFP_ATOMIC);
3007 }
3008}
3009
3010static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3011 struct rndis_indicate *msg, int buflen)
3012{
3013 struct ndis_80211_status_indication *indication;
3014 unsigned int len, offset;
3015
3016 offset = offsetof(struct rndis_indicate, status) +
3017 le32_to_cpu(msg->offset);
3018 len = le32_to_cpu(msg->length);
3019
3020 if (len < 8) {
3021 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3022 len);
3023 return;
3024 }
3025
3026 if (len > buflen || offset > buflen || offset + len > buflen) {
3027 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3028 offset + len, buflen);
3029 return;
3030 }
3031
3032 indication = (void *)((u8 *)msg + offset);
3033
3034 switch (le32_to_cpu(indication->status_type)) {
3035 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3036 netdev_info(usbdev->net, "radio state indication: %i\n",
3037 le32_to_cpu(indication->u.radio_status));
3038 return;
3039
3040 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3041 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3042 le32_to_cpu(indication->u.media_stream_mode));
3043 return;
3044
3045 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3046 rndis_wlan_auth_indication(usbdev, indication, len);
3047 return;
3048
3049 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3050 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3051 return;
3052
3053 default:
3054 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3055 le32_to_cpu(indication->status_type));
3056 }
3057}
3058
3059static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3060{
3061 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3062 struct rndis_indicate *msg = ind;
3063
3064 switch (le32_to_cpu(msg->status)) {
3065 case RNDIS_STATUS_MEDIA_CONNECT:
3066 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3067 /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3068 * "media connect" indications which confuses driver
3069 * and userspace to think that device is
3070 * roaming/reassociating when it isn't.
3071 */
3072 netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3073 return;
3074 }
3075
3076 usbnet_pause_rx(usbdev);
3077
3078 netdev_info(usbdev->net, "media connect\n");
3079
3080 /* queue work to avoid recursive calls into rndis_command */
3081 set_bit(WORK_LINK_UP, &priv->work_pending);
3082 queue_work(priv->workqueue, &priv->work);
3083 break;
3084
3085 case RNDIS_STATUS_MEDIA_DISCONNECT:
3086 netdev_info(usbdev->net, "media disconnect\n");
3087
3088 /* queue work to avoid recursive calls into rndis_command */
3089 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3090 queue_work(priv->workqueue, &priv->work);
3091 break;
3092
3093 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3094 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3095 break;
3096
3097 default:
3098 netdev_info(usbdev->net, "indication: 0x%08x\n",
3099 le32_to_cpu(msg->status));
3100 break;
3101 }
3102}
3103
3104static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3105{
3106 struct {
3107 __le32 num_items;
3108 __le32 items[8];
3109 } networks_supported;
3110 struct ndis_80211_capability *caps;
3111 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3112 int len, retval, i, n;
3113 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3114
3115 /* determine supported modes */
3116 len = sizeof(networks_supported);
3117 retval = rndis_query_oid(usbdev,
3118 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3119 &networks_supported, &len);
3120 if (retval >= 0) {
3121 n = le32_to_cpu(networks_supported.num_items);
3122 if (n > 8)
3123 n = 8;
3124 for (i = 0; i < n; i++) {
3125 switch (le32_to_cpu(networks_supported.items[i])) {
3126 case NDIS_80211_TYPE_FREQ_HOP:
3127 case NDIS_80211_TYPE_DIRECT_SEQ:
3128 priv->caps |= CAP_MODE_80211B;
3129 break;
3130 case NDIS_80211_TYPE_OFDM_A:
3131 priv->caps |= CAP_MODE_80211A;
3132 break;
3133 case NDIS_80211_TYPE_OFDM_G:
3134 priv->caps |= CAP_MODE_80211G;
3135 break;
3136 }
3137 }
3138 }
3139
3140 /* get device 802.11 capabilities, number of PMKIDs */
3141 caps = (struct ndis_80211_capability *)caps_buf;
3142 len = sizeof(caps_buf);
3143 retval = rndis_query_oid(usbdev,
3144 RNDIS_OID_802_11_CAPABILITY,
3145 caps, &len);
3146 if (retval >= 0) {
3147 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3148 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3149 le32_to_cpu(caps->length),
3150 le32_to_cpu(caps->version),
3151 le32_to_cpu(caps->num_pmkids),
3152 le32_to_cpu(caps->num_auth_encr_pair));
3153 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3154 } else
3155 wiphy->max_num_pmkids = 0;
3156
3157 return retval;
3158}
3159
3160static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3161{
3162 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3163 enum nl80211_cqm_rssi_threshold_event event;
3164 int thold, hyst, last_event;
3165
3166 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3167 return;
3168 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3169 return;
3170
3171 last_event = priv->last_cqm_event_rssi;
3172 thold = priv->cqm_rssi_thold;
3173 hyst = priv->cqm_rssi_hyst;
3174
3175 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3176 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3177 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3178 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3179 else
3180 return;
3181
3182 priv->last_cqm_event_rssi = rssi;
3183 cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3184}
3185
3186#define DEVICE_POLLER_JIFFIES (HZ)
3187static void rndis_device_poller(struct work_struct *work)
3188{
3189 struct rndis_wlan_private *priv =
3190 container_of(work, struct rndis_wlan_private,
3191 dev_poller_work.work);
3192 struct usbnet *usbdev = priv->usbdev;
3193 __le32 rssi, tmp;
3194 int len, ret, j;
3195 int update_jiffies = DEVICE_POLLER_JIFFIES;
3196 void *buf;
3197
3198 /* Only check/do workaround when connected. Calling is_associated()
3199 * also polls device with rndis_command() and catches for media link
3200 * indications.
3201 */
3202 if (!is_associated(usbdev)) {
3203 /* Workaround bad scanning in BCM4320a devices with active
3204 * background scanning when not associated.
3205 */
3206 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3207 !priv->scan_request) {
3208 /* Get previous scan results */
3209 rndis_check_bssid_list(usbdev, NULL, NULL);
3210
3211 /* Initiate new scan */
3212 rndis_start_bssid_list_scan(usbdev);
3213 }
3214
3215 goto end;
3216 }
3217
3218 len = sizeof(rssi);
3219 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3220 &rssi, &len);
3221 if (ret == 0) {
3222 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3223 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3224 }
3225
3226 netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3227 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3228
3229 /* Workaround transfer stalls on poor quality links.
3230 * TODO: find right way to fix these stalls (as stalls do not happen
3231 * with ndiswrapper/windows driver). */
3232 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3233 /* Decrease stats worker interval to catch stalls.
3234 * faster. Faster than 400-500ms causes packet loss,
3235 * Slower doesn't catch stalls fast enough.
3236 */
3237 j = msecs_to_jiffies(priv->param_workaround_interval);
3238 if (j > DEVICE_POLLER_JIFFIES)
3239 j = DEVICE_POLLER_JIFFIES;
3240 else if (j <= 0)
3241 j = 1;
3242 update_jiffies = j;
3243
3244 /* Send scan OID. Use of both OIDs is required to get device
3245 * working.
3246 */
3247 tmp = cpu_to_le32(1);
3248 rndis_set_oid(usbdev,
3249 RNDIS_OID_802_11_BSSID_LIST_SCAN,
3250 &tmp, sizeof(tmp));
3251
3252 len = CONTROL_BUFFER_SIZE;
3253 buf = kmalloc(len, GFP_KERNEL);
3254 if (!buf)
3255 goto end;
3256
3257 rndis_query_oid(usbdev,
3258 RNDIS_OID_802_11_BSSID_LIST,
3259 buf, &len);
3260 kfree(buf);
3261 }
3262
3263end:
3264 if (update_jiffies >= HZ)
3265 update_jiffies = round_jiffies_relative(update_jiffies);
3266 else {
3267 j = round_jiffies_relative(update_jiffies);
3268 if (abs(j - update_jiffies) <= 10)
3269 update_jiffies = j;
3270 }
3271
3272 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3273 update_jiffies);
3274}
3275
3276/*
3277 * driver/device initialization
3278 */
3279static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3280{
3281 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3282
3283 priv->device_type = device_type;
3284
3285 priv->param_country[0] = modparam_country[0];
3286 priv->param_country[1] = modparam_country[1];
3287 priv->param_country[2] = 0;
3288 priv->param_frameburst = modparam_frameburst;
3289 priv->param_afterburner = modparam_afterburner;
3290 priv->param_power_save = modparam_power_save;
3291 priv->param_power_output = modparam_power_output;
3292 priv->param_roamtrigger = modparam_roamtrigger;
3293 priv->param_roamdelta = modparam_roamdelta;
3294
3295 priv->param_country[0] = toupper(priv->param_country[0]);
3296 priv->param_country[1] = toupper(priv->param_country[1]);
3297 /* doesn't support EU as country code, use FI instead */
3298 if (!strcmp(priv->param_country, "EU"))
3299 strcpy(priv->param_country, "FI");
3300
3301 if (priv->param_power_save < 0)
3302 priv->param_power_save = 0;
3303 else if (priv->param_power_save > 2)
3304 priv->param_power_save = 2;
3305
3306 if (priv->param_power_output < 0)
3307 priv->param_power_output = 0;
3308 else if (priv->param_power_output > 3)
3309 priv->param_power_output = 3;
3310
3311 if (priv->param_roamtrigger < -80)
3312 priv->param_roamtrigger = -80;
3313 else if (priv->param_roamtrigger > -60)
3314 priv->param_roamtrigger = -60;
3315
3316 if (priv->param_roamdelta < 0)
3317 priv->param_roamdelta = 0;
3318 else if (priv->param_roamdelta > 2)
3319 priv->param_roamdelta = 2;
3320
3321 if (modparam_workaround_interval < 0)
3322 priv->param_workaround_interval = 500;
3323 else
3324 priv->param_workaround_interval = modparam_workaround_interval;
3325}
3326
3327static int unknown_early_init(struct usbnet *usbdev)
3328{
3329 /* copy module parameters for unknown so that iwconfig reports txpower
3330 * and workaround parameter is copied to private structure correctly.
3331 */
3332 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3333
3334 /* This is unknown device, so do not try set configuration parameters.
3335 */
3336
3337 return 0;
3338}
3339
3340static int bcm4320a_early_init(struct usbnet *usbdev)
3341{
3342 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3343 * and workaround parameter is copied to private structure correctly.
3344 */
3345 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3346
3347 /* bcm4320a doesn't handle configuration parameters well. Try
3348 * set any and you get partially zeroed mac and broken device.
3349 */
3350
3351 return 0;
3352}
3353
3354static int bcm4320b_early_init(struct usbnet *usbdev)
3355{
3356 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3357 char buf[8];
3358
3359 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3360
3361 /* Early initialization settings, setting these won't have effect
3362 * if called after generic_rndis_bind().
3363 */
3364
3365 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3366 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3367 priv->param_frameburst ? "1" : "0");
3368 rndis_set_config_parameter_str(usbdev, "Afterburner",
3369 priv->param_afterburner ? "1" : "0");
3370 sprintf(buf, "%d", priv->param_power_save);
3371 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3372 sprintf(buf, "%d", priv->param_power_output);
3373 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3374 sprintf(buf, "%d", priv->param_roamtrigger);
3375 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3376 sprintf(buf, "%d", priv->param_roamdelta);
3377 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3378
3379 return 0;
3380}
3381
3382/* same as rndis_netdev_ops but with local multicast handler */
3383static const struct net_device_ops rndis_wlan_netdev_ops = {
3384 .ndo_open = usbnet_open,
3385 .ndo_stop = usbnet_stop,
3386 .ndo_start_xmit = usbnet_start_xmit,
3387 .ndo_tx_timeout = usbnet_tx_timeout,
3388 .ndo_set_mac_address = eth_mac_addr,
3389 .ndo_validate_addr = eth_validate_addr,
3390 .ndo_set_rx_mode = rndis_wlan_set_multicast_list,
3391};
3392
3393static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3394{
3395 struct wiphy *wiphy;
3396 struct rndis_wlan_private *priv;
3397 int retval, len;
3398 __le32 tmp;
3399
3400 /* allocate wiphy and rndis private data
3401 * NOTE: We only support a single virtual interface, so wiphy
3402 * and wireless_dev are somewhat synonymous for this device.
3403 */
3404 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3405 if (!wiphy)
3406 return -ENOMEM;
3407
3408 priv = wiphy_priv(wiphy);
3409 usbdev->net->ieee80211_ptr = &priv->wdev;
3410 priv->wdev.wiphy = wiphy;
3411 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3412
3413 /* These have to be initialized before calling generic_rndis_bind().
3414 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3415 */
3416 usbdev->driver_priv = priv;
3417 priv->usbdev = usbdev;
3418
3419 mutex_init(&priv->command_lock);
3420
3421 /* because rndis_command() sleeps we need to use workqueue */
3422 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3423 INIT_WORK(&priv->work, rndis_wlan_worker);
3424 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3425 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3426
3427 /* try bind rndis_host */
3428 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3429 if (retval < 0)
3430 goto fail;
3431
3432 /* generic_rndis_bind set packet filter to multicast_all+
3433 * promisc mode which doesn't work well for our devices (device
3434 * picks up rssi to closest station instead of to access point).
3435 *
3436 * rndis_host wants to avoid all OID as much as possible
3437 * so do promisc/multicast handling in rndis_wlan.
3438 */
3439 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3440
3441 tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3442 retval = rndis_set_oid(usbdev,
3443 RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3444 &tmp, sizeof(tmp));
3445
3446 len = sizeof(tmp);
3447 retval = rndis_query_oid(usbdev,
3448 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3449 &tmp, &len);
3450 priv->multicast_size = le32_to_cpu(tmp);
3451 if (retval < 0 || priv->multicast_size < 0)
3452 priv->multicast_size = 0;
3453 if (priv->multicast_size > 0)
3454 usbdev->net->flags |= IFF_MULTICAST;
3455 else
3456 usbdev->net->flags &= ~IFF_MULTICAST;
3457
3458 /* fill-out wiphy structure and register w/ cfg80211 */
3459 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3460 wiphy->privid = rndis_wiphy_privid;
3461 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3462 | BIT(NL80211_IFTYPE_ADHOC);
3463 wiphy->max_scan_ssids = 1;
3464
3465 /* TODO: fill-out band/encr information based on priv->caps */
3466 rndis_wlan_get_caps(usbdev, wiphy);
3467
3468 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3469 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3470 priv->band.channels = priv->channels;
3471 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3472 priv->band.bitrates = priv->rates;
3473 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3474 wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3475 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3476
3477 memcpy(priv->cipher_suites, rndis_cipher_suites,
3478 sizeof(rndis_cipher_suites));
3479 wiphy->cipher_suites = priv->cipher_suites;
3480 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3481
3482 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3483
3484 if (wiphy_register(wiphy)) {
3485 retval = -ENODEV;
3486 goto fail;
3487 }
3488
3489 set_default_iw_params(usbdev);
3490
3491 priv->power_mode = -1;
3492
3493 /* set default rts/frag */
3494 rndis_set_wiphy_params(wiphy,
3495 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3496
3497 /* turn radio off on init */
3498 priv->radio_on = false;
3499 disassociate(usbdev, false);
3500 netif_carrier_off(usbdev->net);
3501
3502 return 0;
3503
3504fail:
3505 cancel_delayed_work_sync(&priv->dev_poller_work);
3506 cancel_delayed_work_sync(&priv->scan_work);
3507 cancel_work_sync(&priv->work);
3508 flush_workqueue(priv->workqueue);
3509 destroy_workqueue(priv->workqueue);
3510
3511 wiphy_free(wiphy);
3512 return retval;
3513}
3514
3515static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3516{
3517 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3518
3519 /* turn radio off */
3520 disassociate(usbdev, false);
3521
3522 cancel_delayed_work_sync(&priv->dev_poller_work);
3523 cancel_delayed_work_sync(&priv->scan_work);
3524 cancel_work_sync(&priv->work);
3525 flush_workqueue(priv->workqueue);
3526 destroy_workqueue(priv->workqueue);
3527
3528 rndis_unbind(usbdev, intf);
3529
3530 wiphy_unregister(priv->wdev.wiphy);
3531 wiphy_free(priv->wdev.wiphy);
3532}
3533
3534static int rndis_wlan_reset(struct usbnet *usbdev)
3535{
3536 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3537 int retval;
3538
3539 netdev_dbg(usbdev->net, "%s()\n", __func__);
3540
3541 retval = rndis_reset(usbdev);
3542 if (retval)
3543 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3544
3545 /* rndis_reset cleared multicast list, so restore here.
3546 (set_multicast_list() also turns on current packet filter) */
3547 set_multicast_list(usbdev);
3548
3549 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3550 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3551
3552 return deauthenticate(usbdev);
3553}
3554
3555static int rndis_wlan_stop(struct usbnet *usbdev)
3556{
3557 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3558 int retval;
3559 __le32 filter;
3560
3561 netdev_dbg(usbdev->net, "%s()\n", __func__);
3562
3563 retval = disassociate(usbdev, false);
3564
3565 priv->work_pending = 0;
3566 cancel_delayed_work_sync(&priv->dev_poller_work);
3567 cancel_delayed_work_sync(&priv->scan_work);
3568 cancel_work_sync(&priv->work);
3569 flush_workqueue(priv->workqueue);
3570
3571 if (priv->scan_request) {
3572 cfg80211_scan_done(priv->scan_request, true);
3573 priv->scan_request = NULL;
3574 }
3575
3576 /* Set current packet filter zero to block receiving data packets from
3577 device. */
3578 filter = 0;
3579 rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3580 sizeof(filter));
3581
3582 return retval;
3583}
3584
3585static const struct driver_info bcm4320b_info = {
3586 .description = "Wireless RNDIS device, BCM4320b based",
3587 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3588 FLAG_AVOID_UNLINK_URBS,
3589 .bind = rndis_wlan_bind,
3590 .unbind = rndis_wlan_unbind,
3591 .status = rndis_status,
3592 .rx_fixup = rndis_rx_fixup,
3593 .tx_fixup = rndis_tx_fixup,
3594 .reset = rndis_wlan_reset,
3595 .stop = rndis_wlan_stop,
3596 .early_init = bcm4320b_early_init,
3597 .indication = rndis_wlan_indication,
3598};
3599
3600static const struct driver_info bcm4320a_info = {
3601 .description = "Wireless RNDIS device, BCM4320a based",
3602 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3603 FLAG_AVOID_UNLINK_URBS,
3604 .bind = rndis_wlan_bind,
3605 .unbind = rndis_wlan_unbind,
3606 .status = rndis_status,
3607 .rx_fixup = rndis_rx_fixup,
3608 .tx_fixup = rndis_tx_fixup,
3609 .reset = rndis_wlan_reset,
3610 .stop = rndis_wlan_stop,
3611 .early_init = bcm4320a_early_init,
3612 .indication = rndis_wlan_indication,
3613};
3614
3615static const struct driver_info rndis_wlan_info = {
3616 .description = "Wireless RNDIS device",
3617 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3618 FLAG_AVOID_UNLINK_URBS,
3619 .bind = rndis_wlan_bind,
3620 .unbind = rndis_wlan_unbind,
3621 .status = rndis_status,
3622 .rx_fixup = rndis_rx_fixup,
3623 .tx_fixup = rndis_tx_fixup,
3624 .reset = rndis_wlan_reset,
3625 .stop = rndis_wlan_stop,
3626 .early_init = unknown_early_init,
3627 .indication = rndis_wlan_indication,
3628};
3629
3630/*-------------------------------------------------------------------------*/
3631
3632static const struct usb_device_id products [] = {
3633#define RNDIS_MASTER_INTERFACE \
3634 .bInterfaceClass = USB_CLASS_COMM, \
3635 .bInterfaceSubClass = 2 /* ACM */, \
3636 .bInterfaceProtocol = 0x0ff
3637
3638/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3639 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3640 */
3641{
3642 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3643 | USB_DEVICE_ID_MATCH_DEVICE,
3644 .idVendor = 0x0411,
3645 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3646 RNDIS_MASTER_INTERFACE,
3647 .driver_info = (unsigned long) &bcm4320b_info,
3648}, {
3649 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3650 | USB_DEVICE_ID_MATCH_DEVICE,
3651 .idVendor = 0x0baf,
3652 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3653 RNDIS_MASTER_INTERFACE,
3654 .driver_info = (unsigned long) &bcm4320b_info,
3655}, {
3656 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3657 | USB_DEVICE_ID_MATCH_DEVICE,
3658 .idVendor = 0x050d,
3659 .idProduct = 0x011b, /* Belkin F5D7051 */
3660 RNDIS_MASTER_INTERFACE,
3661 .driver_info = (unsigned long) &bcm4320b_info,
3662}, {
3663 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3664 | USB_DEVICE_ID_MATCH_DEVICE,
3665 .idVendor = 0x1799, /* Belkin has two vendor ids */
3666 .idProduct = 0x011b, /* Belkin F5D7051 */
3667 RNDIS_MASTER_INTERFACE,
3668 .driver_info = (unsigned long) &bcm4320b_info,
3669}, {
3670 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3671 | USB_DEVICE_ID_MATCH_DEVICE,
3672 .idVendor = 0x13b1,
3673 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3674 RNDIS_MASTER_INTERFACE,
3675 .driver_info = (unsigned long) &bcm4320b_info,
3676}, {
3677 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3678 | USB_DEVICE_ID_MATCH_DEVICE,
3679 .idVendor = 0x13b1,
3680 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3681 RNDIS_MASTER_INTERFACE,
3682 .driver_info = (unsigned long) &bcm4320b_info,
3683}, {
3684 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3685 | USB_DEVICE_ID_MATCH_DEVICE,
3686 .idVendor = 0x0b05,
3687 .idProduct = 0x1717, /* Asus WL169gE */
3688 RNDIS_MASTER_INTERFACE,
3689 .driver_info = (unsigned long) &bcm4320b_info,
3690}, {
3691 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3692 | USB_DEVICE_ID_MATCH_DEVICE,
3693 .idVendor = 0x0a5c,
3694 .idProduct = 0xd11b, /* Eminent EM4045 */
3695 RNDIS_MASTER_INTERFACE,
3696 .driver_info = (unsigned long) &bcm4320b_info,
3697}, {
3698 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3699 | USB_DEVICE_ID_MATCH_DEVICE,
3700 .idVendor = 0x1690,
3701 .idProduct = 0x0715, /* BT Voyager 1055 */
3702 RNDIS_MASTER_INTERFACE,
3703 .driver_info = (unsigned long) &bcm4320b_info,
3704},
3705/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3706 * parameters available, hardware probably contain older firmware version with
3707 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3708 */
3709{
3710 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3711 | USB_DEVICE_ID_MATCH_DEVICE,
3712 .idVendor = 0x13b1,
3713 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3714 RNDIS_MASTER_INTERFACE,
3715 .driver_info = (unsigned long) &bcm4320a_info,
3716}, {
3717 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3718 | USB_DEVICE_ID_MATCH_DEVICE,
3719 .idVendor = 0x0baf,
3720 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3721 RNDIS_MASTER_INTERFACE,
3722 .driver_info = (unsigned long) &bcm4320a_info,
3723}, {
3724 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3725 | USB_DEVICE_ID_MATCH_DEVICE,
3726 .idVendor = 0x0411,
3727 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3728 RNDIS_MASTER_INTERFACE,
3729 .driver_info = (unsigned long) &bcm4320a_info,
3730},
3731/* Generic Wireless RNDIS devices that we don't have exact
3732 * idVendor/idProduct/chip yet.
3733 */
3734{
3735 /* RNDIS is MSFT's un-official variant of CDC ACM */
3736 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3737 .driver_info = (unsigned long) &rndis_wlan_info,
3738}, {
3739 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3740 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3741 .driver_info = (unsigned long) &rndis_wlan_info,
3742},
3743 { }, // END
3744};
3745MODULE_DEVICE_TABLE(usb, products);
3746
3747static struct usb_driver rndis_wlan_driver = {
3748 .name = "rndis_wlan",
3749 .id_table = products,
3750 .probe = usbnet_probe,
3751 .disconnect = usbnet_disconnect,
3752 .suspend = usbnet_suspend,
3753 .resume = usbnet_resume,
3754 .disable_hub_initiated_lpm = 1,
3755};
3756
3757module_usb_driver(rndis_wlan_driver);
3758
3759MODULE_AUTHOR("Bjorge Dijkstra");
3760MODULE_AUTHOR("Jussi Kivilinna");
3761MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3762MODULE_LICENSE("GPL");
3763