Loading...
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// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Driver for RNDIS based wireless USB devices.
4 *
5 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
6 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.fi>
7 *
8 * Portions of this file are based on NDISwrapper project,
9 * Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
10 * http://ndiswrapper.sourceforge.net/
11 */
12
13// #define DEBUG // error path messages, extra info
14// #define VERBOSE // more; success messages
15
16#include <linux/module.h>
17#include <linux/netdevice.h>
18#include <linux/etherdevice.h>
19#include <linux/ethtool.h>
20#include <linux/workqueue.h>
21#include <linux/mutex.h>
22#include <linux/mii.h>
23#include <linux/usb.h>
24#include <linux/usb/cdc.h>
25#include <linux/ieee80211.h>
26#include <linux/if_arp.h>
27#include <linux/ctype.h>
28#include <linux/spinlock.h>
29#include <linux/slab.h>
30#include <net/cfg80211.h>
31#include <linux/usb/usbnet.h>
32#include <linux/usb/rndis_host.h>
33
34
35/* NOTE: All these are settings for Broadcom chipset */
36static char modparam_country[4] = "EU";
37module_param_string(country, modparam_country, 4, 0444);
38MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
39
40static int modparam_frameburst = 1;
41module_param_named(frameburst, modparam_frameburst, int, 0444);
42MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
43
44static int modparam_afterburner = 0;
45module_param_named(afterburner, modparam_afterburner, int, 0444);
46MODULE_PARM_DESC(afterburner,
47 "enable afterburner aka '125 High Speed Mode' (default: off)");
48
49static int modparam_power_save = 0;
50module_param_named(power_save, modparam_power_save, int, 0444);
51MODULE_PARM_DESC(power_save,
52 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
53
54static int modparam_power_output = 3;
55module_param_named(power_output, modparam_power_output, int, 0444);
56MODULE_PARM_DESC(power_output,
57 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
58
59static int modparam_roamtrigger = -70;
60module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
61MODULE_PARM_DESC(roamtrigger,
62 "set roaming dBm trigger: -80=optimize for distance, "
63 "-60=bandwidth (default: -70)");
64
65static int modparam_roamdelta = 1;
66module_param_named(roamdelta, modparam_roamdelta, int, 0444);
67MODULE_PARM_DESC(roamdelta,
68 "set roaming tendency: 0=aggressive, 1=moderate, "
69 "2=conservative (default: moderate)");
70
71static int modparam_workaround_interval;
72module_param_named(workaround_interval, modparam_workaround_interval,
73 int, 0444);
74MODULE_PARM_DESC(workaround_interval,
75 "set stall workaround interval in msecs (0=disabled) (default: 0)");
76
77/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
78#define WL_NOISE -96 /* typical noise level in dBm */
79#define WL_SIGMAX -32 /* typical maximum signal level in dBm */
80
81
82/* Assume that Broadcom 4320 (only chipset at time of writing known to be
83 * based on wireless rndis) has default txpower of 13dBm.
84 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
85 * 100% : 20 mW ~ 13dBm
86 * 75% : 15 mW ~ 12dBm
87 * 50% : 10 mW ~ 10dBm
88 * 25% : 5 mW ~ 7dBm
89 */
90#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
91#define BCM4320_DEFAULT_TXPOWER_DBM_75 12
92#define BCM4320_DEFAULT_TXPOWER_DBM_50 10
93#define BCM4320_DEFAULT_TXPOWER_DBM_25 7
94
95/* Known device types */
96#define RNDIS_UNKNOWN 0
97#define RNDIS_BCM4320A 1
98#define RNDIS_BCM4320B 2
99
100
101/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
102 * slightly modified for datatype endianess, etc
103 */
104#define NDIS_802_11_LENGTH_SSID 32
105#define NDIS_802_11_LENGTH_RATES 8
106#define NDIS_802_11_LENGTH_RATES_EX 16
107
108enum ndis_80211_net_type {
109 NDIS_80211_TYPE_FREQ_HOP,
110 NDIS_80211_TYPE_DIRECT_SEQ,
111 NDIS_80211_TYPE_OFDM_A,
112 NDIS_80211_TYPE_OFDM_G
113};
114
115enum ndis_80211_net_infra {
116 NDIS_80211_INFRA_ADHOC,
117 NDIS_80211_INFRA_INFRA,
118 NDIS_80211_INFRA_AUTO_UNKNOWN
119};
120
121enum ndis_80211_auth_mode {
122 NDIS_80211_AUTH_OPEN,
123 NDIS_80211_AUTH_SHARED,
124 NDIS_80211_AUTH_AUTO_SWITCH,
125 NDIS_80211_AUTH_WPA,
126 NDIS_80211_AUTH_WPA_PSK,
127 NDIS_80211_AUTH_WPA_NONE,
128 NDIS_80211_AUTH_WPA2,
129 NDIS_80211_AUTH_WPA2_PSK
130};
131
132enum ndis_80211_encr_status {
133 NDIS_80211_ENCR_WEP_ENABLED,
134 NDIS_80211_ENCR_DISABLED,
135 NDIS_80211_ENCR_WEP_KEY_ABSENT,
136 NDIS_80211_ENCR_NOT_SUPPORTED,
137 NDIS_80211_ENCR_TKIP_ENABLED,
138 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
139 NDIS_80211_ENCR_CCMP_ENABLED,
140 NDIS_80211_ENCR_CCMP_KEY_ABSENT
141};
142
143enum ndis_80211_priv_filter {
144 NDIS_80211_PRIV_ACCEPT_ALL,
145 NDIS_80211_PRIV_8021X_WEP
146};
147
148enum ndis_80211_status_type {
149 NDIS_80211_STATUSTYPE_AUTHENTICATION,
150 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
151 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
152 NDIS_80211_STATUSTYPE_RADIOSTATE,
153};
154
155enum ndis_80211_media_stream_mode {
156 NDIS_80211_MEDIA_STREAM_OFF,
157 NDIS_80211_MEDIA_STREAM_ON
158};
159
160enum ndis_80211_radio_status {
161 NDIS_80211_RADIO_STATUS_ON,
162 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
163 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
164};
165
166enum ndis_80211_addkey_bits {
167 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
168 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
169 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
170 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
171};
172
173enum ndis_80211_addwep_bits {
174 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
175 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
176};
177
178enum ndis_80211_power_mode {
179 NDIS_80211_POWER_MODE_CAM,
180 NDIS_80211_POWER_MODE_MAX_PSP,
181 NDIS_80211_POWER_MODE_FAST_PSP,
182};
183
184enum ndis_80211_pmkid_cand_list_flag_bits {
185 NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
186};
187
188struct ndis_80211_auth_request {
189 __le32 length;
190 u8 bssid[ETH_ALEN];
191 u8 padding[2];
192 __le32 flags;
193} __packed;
194
195struct ndis_80211_pmkid_candidate {
196 u8 bssid[ETH_ALEN];
197 u8 padding[2];
198 __le32 flags;
199} __packed;
200
201struct ndis_80211_pmkid_cand_list {
202 __le32 version;
203 __le32 num_candidates;
204 struct ndis_80211_pmkid_candidate candidate_list[];
205} __packed;
206
207struct ndis_80211_status_indication {
208 __le32 status_type;
209 union {
210 __le32 media_stream_mode;
211 __le32 radio_status;
212 struct ndis_80211_auth_request auth_request[0];
213 struct ndis_80211_pmkid_cand_list cand_list;
214 } u;
215} __packed;
216
217struct ndis_80211_ssid {
218 __le32 length;
219 u8 essid[NDIS_802_11_LENGTH_SSID];
220} __packed;
221
222struct ndis_80211_conf_freq_hop {
223 __le32 length;
224 __le32 hop_pattern;
225 __le32 hop_set;
226 __le32 dwell_time;
227} __packed;
228
229struct ndis_80211_conf {
230 __le32 length;
231 __le32 beacon_period;
232 __le32 atim_window;
233 __le32 ds_config;
234 struct ndis_80211_conf_freq_hop fh_config;
235} __packed;
236
237struct ndis_80211_bssid_ex {
238 __le32 length;
239 u8 mac[ETH_ALEN];
240 u8 padding[2];
241 struct ndis_80211_ssid ssid;
242 __le32 privacy;
243 __le32 rssi;
244 __le32 net_type;
245 struct ndis_80211_conf config;
246 __le32 net_infra;
247 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
248 __le32 ie_length;
249 u8 ies[];
250} __packed;
251
252struct ndis_80211_bssid_list_ex {
253 __le32 num_items;
254 struct ndis_80211_bssid_ex bssid[];
255} __packed;
256
257struct ndis_80211_fixed_ies {
258 u8 timestamp[8];
259 __le16 beacon_interval;
260 __le16 capabilities;
261} __packed;
262
263struct ndis_80211_wep_key {
264 __le32 size;
265 __le32 index;
266 __le32 length;
267 u8 material[32];
268} __packed;
269
270struct ndis_80211_key {
271 __le32 size;
272 __le32 index;
273 __le32 length;
274 u8 bssid[ETH_ALEN];
275 u8 padding[6];
276 u8 rsc[8];
277 u8 material[32];
278} __packed;
279
280struct ndis_80211_remove_key {
281 __le32 size;
282 __le32 index;
283 u8 bssid[ETH_ALEN];
284 u8 padding[2];
285} __packed;
286
287struct ndis_config_param {
288 __le32 name_offs;
289 __le32 name_length;
290 __le32 type;
291 __le32 value_offs;
292 __le32 value_length;
293} __packed;
294
295struct ndis_80211_assoc_info {
296 __le32 length;
297 __le16 req_ies;
298 struct req_ie {
299 __le16 capa;
300 __le16 listen_interval;
301 u8 cur_ap_address[ETH_ALEN];
302 } req_ie;
303 __le32 req_ie_length;
304 __le32 offset_req_ies;
305 __le16 resp_ies;
306 struct resp_ie {
307 __le16 capa;
308 __le16 status_code;
309 __le16 assoc_id;
310 } resp_ie;
311 __le32 resp_ie_length;
312 __le32 offset_resp_ies;
313} __packed;
314
315struct ndis_80211_capability {
316 __le32 length;
317 __le32 version;
318 __le32 num_pmkids;
319 __le32 num_auth_encr_pair;
320} __packed;
321
322struct ndis_80211_bssid_info {
323 u8 bssid[ETH_ALEN];
324 u8 pmkid[16];
325} __packed;
326
327struct ndis_80211_pmkid {
328 __le32 length;
329 __le32 bssid_info_count;
330 struct ndis_80211_bssid_info bssid_info[];
331} __packed;
332
333/*
334 * private data
335 */
336#define CAP_MODE_80211A 1
337#define CAP_MODE_80211B 2
338#define CAP_MODE_80211G 4
339#define CAP_MODE_MASK 7
340
341#define WORK_LINK_UP 0
342#define WORK_LINK_DOWN 1
343#define WORK_SET_MULTICAST_LIST 2
344
345#define RNDIS_WLAN_ALG_NONE 0
346#define RNDIS_WLAN_ALG_WEP (1<<0)
347#define RNDIS_WLAN_ALG_TKIP (1<<1)
348#define RNDIS_WLAN_ALG_CCMP (1<<2)
349
350#define RNDIS_WLAN_NUM_KEYS 4
351#define RNDIS_WLAN_KEY_MGMT_NONE 0
352#define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
353#define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
354
355#define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
356
357static const struct ieee80211_channel rndis_channels[] = {
358 { .center_freq = 2412 },
359 { .center_freq = 2417 },
360 { .center_freq = 2422 },
361 { .center_freq = 2427 },
362 { .center_freq = 2432 },
363 { .center_freq = 2437 },
364 { .center_freq = 2442 },
365 { .center_freq = 2447 },
366 { .center_freq = 2452 },
367 { .center_freq = 2457 },
368 { .center_freq = 2462 },
369 { .center_freq = 2467 },
370 { .center_freq = 2472 },
371 { .center_freq = 2484 },
372};
373
374static const struct ieee80211_rate rndis_rates[] = {
375 { .bitrate = 10 },
376 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
377 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
378 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
379 { .bitrate = 60 },
380 { .bitrate = 90 },
381 { .bitrate = 120 },
382 { .bitrate = 180 },
383 { .bitrate = 240 },
384 { .bitrate = 360 },
385 { .bitrate = 480 },
386 { .bitrate = 540 }
387};
388
389static const u32 rndis_cipher_suites[] = {
390 WLAN_CIPHER_SUITE_WEP40,
391 WLAN_CIPHER_SUITE_WEP104,
392 WLAN_CIPHER_SUITE_TKIP,
393 WLAN_CIPHER_SUITE_CCMP,
394};
395
396struct rndis_wlan_encr_key {
397 int len;
398 u32 cipher;
399 u8 material[32];
400 u8 bssid[ETH_ALEN];
401 bool pairwise;
402 bool tx_key;
403};
404
405/* RNDIS device private data */
406struct rndis_wlan_private {
407 struct usbnet *usbdev;
408
409 struct wireless_dev wdev;
410
411 struct cfg80211_scan_request *scan_request;
412
413 struct workqueue_struct *workqueue;
414 struct delayed_work dev_poller_work;
415 struct delayed_work scan_work;
416 struct work_struct work;
417 struct mutex command_lock;
418 unsigned long work_pending;
419 int last_qual;
420 s32 cqm_rssi_thold;
421 u32 cqm_rssi_hyst;
422 int last_cqm_event_rssi;
423
424 struct ieee80211_supported_band band;
425 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
426 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
427 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
428
429 int device_type;
430 int caps;
431 int multicast_size;
432
433 /* module parameters */
434 char param_country[4];
435 int param_frameburst;
436 int param_afterburner;
437 int param_power_save;
438 int param_power_output;
439 int param_roamtrigger;
440 int param_roamdelta;
441 u32 param_workaround_interval;
442
443 /* hardware state */
444 bool radio_on;
445 int power_mode;
446 int infra_mode;
447 bool connected;
448 u8 bssid[ETH_ALEN];
449 u32 current_command_oid;
450
451 /* encryption stuff */
452 u8 encr_tx_key_index;
453 struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
454 int wpa_version;
455
456 u8 command_buffer[COMMAND_BUFFER_SIZE];
457};
458
459/*
460 * cfg80211 ops
461 */
462static int rndis_change_virtual_intf(struct wiphy *wiphy,
463 struct net_device *dev,
464 enum nl80211_iftype type,
465 struct vif_params *params);
466
467static int rndis_scan(struct wiphy *wiphy,
468 struct cfg80211_scan_request *request);
469
470static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
471
472static int rndis_set_tx_power(struct wiphy *wiphy,
473 struct wireless_dev *wdev,
474 enum nl80211_tx_power_setting type,
475 int mbm);
476static int rndis_get_tx_power(struct wiphy *wiphy,
477 struct wireless_dev *wdev,
478 int *dbm);
479
480static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
481 struct cfg80211_connect_params *sme);
482
483static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
484 u16 reason_code);
485
486static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
487 struct cfg80211_ibss_params *params);
488
489static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
490
491static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
492 u8 key_index, bool pairwise, const u8 *mac_addr,
493 struct key_params *params);
494
495static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
496 u8 key_index, bool pairwise, const u8 *mac_addr);
497
498static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
499 u8 key_index, bool unicast, bool multicast);
500
501static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
502 const u8 *mac, struct station_info *sinfo);
503
504static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
505 int idx, u8 *mac, struct station_info *sinfo);
506
507static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
508 struct cfg80211_pmksa *pmksa);
509
510static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
511 struct cfg80211_pmksa *pmksa);
512
513static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
514
515static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
516 bool enabled, int timeout);
517
518static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
519 struct net_device *dev,
520 s32 rssi_thold, u32 rssi_hyst);
521
522static const struct cfg80211_ops rndis_config_ops = {
523 .change_virtual_intf = rndis_change_virtual_intf,
524 .scan = rndis_scan,
525 .set_wiphy_params = rndis_set_wiphy_params,
526 .set_tx_power = rndis_set_tx_power,
527 .get_tx_power = rndis_get_tx_power,
528 .connect = rndis_connect,
529 .disconnect = rndis_disconnect,
530 .join_ibss = rndis_join_ibss,
531 .leave_ibss = rndis_leave_ibss,
532 .add_key = rndis_add_key,
533 .del_key = rndis_del_key,
534 .set_default_key = rndis_set_default_key,
535 .get_station = rndis_get_station,
536 .dump_station = rndis_dump_station,
537 .set_pmksa = rndis_set_pmksa,
538 .del_pmksa = rndis_del_pmksa,
539 .flush_pmksa = rndis_flush_pmksa,
540 .set_power_mgmt = rndis_set_power_mgmt,
541 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
542};
543
544static void *rndis_wiphy_privid = &rndis_wiphy_privid;
545
546
547static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
548{
549 return (struct rndis_wlan_private *)dev->driver_priv;
550}
551
552static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
553{
554 switch (priv->param_power_output) {
555 default:
556 case 3:
557 return BCM4320_DEFAULT_TXPOWER_DBM_100;
558 case 2:
559 return BCM4320_DEFAULT_TXPOWER_DBM_75;
560 case 1:
561 return BCM4320_DEFAULT_TXPOWER_DBM_50;
562 case 0:
563 return BCM4320_DEFAULT_TXPOWER_DBM_25;
564 }
565}
566
567static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
568{
569 int cipher = priv->encr_keys[idx].cipher;
570
571 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
572 cipher == WLAN_CIPHER_SUITE_TKIP);
573}
574
575static int rndis_cipher_to_alg(u32 cipher)
576{
577 switch (cipher) {
578 default:
579 return RNDIS_WLAN_ALG_NONE;
580 case WLAN_CIPHER_SUITE_WEP40:
581 case WLAN_CIPHER_SUITE_WEP104:
582 return RNDIS_WLAN_ALG_WEP;
583 case WLAN_CIPHER_SUITE_TKIP:
584 return RNDIS_WLAN_ALG_TKIP;
585 case WLAN_CIPHER_SUITE_CCMP:
586 return RNDIS_WLAN_ALG_CCMP;
587 }
588}
589
590static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
591{
592 switch (akm_suite) {
593 default:
594 return RNDIS_WLAN_KEY_MGMT_NONE;
595 case WLAN_AKM_SUITE_8021X:
596 return RNDIS_WLAN_KEY_MGMT_802_1X;
597 case WLAN_AKM_SUITE_PSK:
598 return RNDIS_WLAN_KEY_MGMT_PSK;
599 }
600}
601
602#ifdef DEBUG
603static const char *oid_to_string(u32 oid)
604{
605 switch (oid) {
606#define OID_STR(oid) case oid: return(#oid)
607 /* from rndis_host.h */
608 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
609 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
610 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
611 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
612
613 /* from rndis_wlan.c */
614 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
615 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
616
617 OID_STR(RNDIS_OID_GEN_XMIT_OK);
618 OID_STR(RNDIS_OID_GEN_RCV_OK);
619 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
620 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
621 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
622
623 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
624 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
625 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
626
627 OID_STR(RNDIS_OID_802_11_BSSID);
628 OID_STR(RNDIS_OID_802_11_SSID);
629 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
630 OID_STR(RNDIS_OID_802_11_ADD_WEP);
631 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
632 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
633 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
634 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
635 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
636 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
637 OID_STR(RNDIS_OID_802_11_ADD_KEY);
638 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
639 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
640 OID_STR(RNDIS_OID_802_11_CAPABILITY);
641 OID_STR(RNDIS_OID_802_11_PMKID);
642 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
643 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
644 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
645 OID_STR(RNDIS_OID_802_11_RSSI);
646 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
647 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
648 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
649 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
650 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
651 OID_STR(RNDIS_OID_802_11_POWER_MODE);
652 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
653#undef OID_STR
654 }
655
656 return "?";
657}
658#else
659static const char *oid_to_string(u32 oid)
660{
661 return "?";
662}
663#endif
664
665/* translate error code */
666static int rndis_error_status(__le32 rndis_status)
667{
668 int ret = -EINVAL;
669 switch (le32_to_cpu(rndis_status)) {
670 case RNDIS_STATUS_SUCCESS:
671 ret = 0;
672 break;
673 case RNDIS_STATUS_FAILURE:
674 case RNDIS_STATUS_INVALID_DATA:
675 ret = -EINVAL;
676 break;
677 case RNDIS_STATUS_NOT_SUPPORTED:
678 ret = -EOPNOTSUPP;
679 break;
680 case RNDIS_STATUS_ADAPTER_NOT_READY:
681 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
682 ret = -EBUSY;
683 break;
684 }
685 return ret;
686}
687
688static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
689{
690 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
691 union {
692 void *buf;
693 struct rndis_msg_hdr *header;
694 struct rndis_query *get;
695 struct rndis_query_c *get_c;
696 } u;
697 int ret, buflen;
698 int resplen, respoffs, copylen;
699
700 buflen = *len + sizeof(*u.get);
701 if (buflen < CONTROL_BUFFER_SIZE)
702 buflen = CONTROL_BUFFER_SIZE;
703
704 if (buflen > COMMAND_BUFFER_SIZE) {
705 u.buf = kmalloc(buflen, GFP_KERNEL);
706 if (!u.buf)
707 return -ENOMEM;
708 } else {
709 u.buf = priv->command_buffer;
710 }
711
712 mutex_lock(&priv->command_lock);
713
714 memset(u.get, 0, sizeof *u.get);
715 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
716 u.get->msg_len = cpu_to_le32(sizeof *u.get);
717 u.get->oid = cpu_to_le32(oid);
718
719 priv->current_command_oid = oid;
720 ret = rndis_command(dev, u.header, buflen);
721 priv->current_command_oid = 0;
722 if (ret < 0)
723 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
724 __func__, oid_to_string(oid), ret,
725 le32_to_cpu(u.get_c->status));
726
727 if (ret == 0) {
728 resplen = le32_to_cpu(u.get_c->len);
729 respoffs = le32_to_cpu(u.get_c->offset) + 8;
730
731 if (respoffs > buflen) {
732 /* Device returned data offset outside buffer, error. */
733 netdev_dbg(dev->net, "%s(%s): received invalid "
734 "data offset: %d > %d\n", __func__,
735 oid_to_string(oid), respoffs, buflen);
736
737 ret = -EINVAL;
738 goto exit_unlock;
739 }
740
741 if ((resplen + respoffs) > buflen) {
742 /* Device would have returned more data if buffer would
743 * have been big enough. Copy just the bits that we got.
744 */
745 copylen = buflen - respoffs;
746 } else {
747 copylen = resplen;
748 }
749
750 if (copylen > *len)
751 copylen = *len;
752
753 memcpy(data, u.buf + respoffs, copylen);
754
755 *len = resplen;
756
757 ret = rndis_error_status(u.get_c->status);
758 if (ret < 0)
759 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
760 __func__, oid_to_string(oid),
761 le32_to_cpu(u.get_c->status), ret);
762 }
763
764exit_unlock:
765 mutex_unlock(&priv->command_lock);
766
767 if (u.buf != priv->command_buffer)
768 kfree(u.buf);
769 return ret;
770}
771
772static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
773 int len)
774{
775 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
776 union {
777 void *buf;
778 struct rndis_msg_hdr *header;
779 struct rndis_set *set;
780 struct rndis_set_c *set_c;
781 } u;
782 int ret, buflen;
783
784 buflen = len + sizeof(*u.set);
785 if (buflen < CONTROL_BUFFER_SIZE)
786 buflen = CONTROL_BUFFER_SIZE;
787
788 if (buflen > COMMAND_BUFFER_SIZE) {
789 u.buf = kmalloc(buflen, GFP_KERNEL);
790 if (!u.buf)
791 return -ENOMEM;
792 } else {
793 u.buf = priv->command_buffer;
794 }
795
796 mutex_lock(&priv->command_lock);
797
798 memset(u.set, 0, sizeof *u.set);
799 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
800 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
801 u.set->oid = cpu_to_le32(oid);
802 u.set->len = cpu_to_le32(len);
803 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
804 u.set->handle = cpu_to_le32(0);
805 memcpy(u.buf + sizeof(*u.set), data, len);
806
807 priv->current_command_oid = oid;
808 ret = rndis_command(dev, u.header, buflen);
809 priv->current_command_oid = 0;
810 if (ret < 0)
811 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
812 __func__, oid_to_string(oid), ret,
813 le32_to_cpu(u.set_c->status));
814
815 if (ret == 0) {
816 ret = rndis_error_status(u.set_c->status);
817
818 if (ret < 0)
819 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
820 __func__, oid_to_string(oid),
821 le32_to_cpu(u.set_c->status), ret);
822 }
823
824 mutex_unlock(&priv->command_lock);
825
826 if (u.buf != priv->command_buffer)
827 kfree(u.buf);
828 return ret;
829}
830
831static int rndis_reset(struct usbnet *usbdev)
832{
833 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
834 struct rndis_reset *reset;
835 int ret;
836
837 mutex_lock(&priv->command_lock);
838
839 reset = (void *)priv->command_buffer;
840 memset(reset, 0, sizeof(*reset));
841 reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
842 reset->msg_len = cpu_to_le32(sizeof(*reset));
843 priv->current_command_oid = 0;
844 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
845
846 mutex_unlock(&priv->command_lock);
847
848 if (ret < 0)
849 return ret;
850 return 0;
851}
852
853/*
854 * Specs say that we can only set config parameters only soon after device
855 * initialization.
856 * value_type: 0 = u32, 2 = unicode string
857 */
858static int rndis_set_config_parameter(struct usbnet *dev, char *param,
859 int value_type, void *value)
860{
861 struct ndis_config_param *infobuf;
862 int value_len, info_len, param_len, ret, i;
863 __le16 *unibuf;
864 __le32 *dst_value;
865
866 if (value_type == 0)
867 value_len = sizeof(__le32);
868 else if (value_type == 2)
869 value_len = strlen(value) * sizeof(__le16);
870 else
871 return -EINVAL;
872
873 param_len = strlen(param) * sizeof(__le16);
874 info_len = sizeof(*infobuf) + param_len + value_len;
875
876#ifdef DEBUG
877 info_len += 12;
878#endif
879 infobuf = kmalloc(info_len, GFP_KERNEL);
880 if (!infobuf)
881 return -ENOMEM;
882
883#ifdef DEBUG
884 info_len -= 12;
885 /* extra 12 bytes are for padding (debug output) */
886 memset(infobuf, 0xCC, info_len + 12);
887#endif
888
889 if (value_type == 2)
890 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
891 param, (u8 *)value);
892 else
893 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
894 param, *(u32 *)value);
895
896 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
897 infobuf->name_length = cpu_to_le32(param_len);
898 infobuf->type = cpu_to_le32(value_type);
899 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
900 infobuf->value_length = cpu_to_le32(value_len);
901
902 /* simple string to unicode string conversion */
903 unibuf = (void *)infobuf + sizeof(*infobuf);
904 for (i = 0; i < param_len / sizeof(__le16); i++)
905 unibuf[i] = cpu_to_le16(param[i]);
906
907 if (value_type == 2) {
908 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
909 for (i = 0; i < value_len / sizeof(__le16); i++)
910 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
911 } else {
912 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
913 *dst_value = cpu_to_le32(*(u32 *)value);
914 }
915
916#ifdef DEBUG
917 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
918 for (i = 0; i < info_len; i += 12) {
919 u32 *tmp = (u32 *)((u8 *)infobuf + i);
920 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
921 cpu_to_be32(tmp[0]),
922 cpu_to_be32(tmp[1]),
923 cpu_to_be32(tmp[2]));
924 }
925#endif
926
927 ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
928 infobuf, info_len);
929 if (ret != 0)
930 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
931 ret);
932
933 kfree(infobuf);
934 return ret;
935}
936
937static int rndis_set_config_parameter_str(struct usbnet *dev,
938 char *param, char *value)
939{
940 return rndis_set_config_parameter(dev, param, 2, value);
941}
942
943/*
944 * data conversion functions
945 */
946static int level_to_qual(int level)
947{
948 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
949 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
950}
951
952/*
953 * common functions
954 */
955static int set_infra_mode(struct usbnet *usbdev, int mode);
956static void restore_keys(struct usbnet *usbdev);
957static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
958 bool *matched);
959
960static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
961{
962 __le32 tmp;
963
964 /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
965 tmp = cpu_to_le32(1);
966 return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
967 sizeof(tmp));
968}
969
970static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
971{
972 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
973 int ret;
974
975 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
976 ssid, sizeof(*ssid));
977 if (ret < 0) {
978 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
979 return ret;
980 }
981 if (ret == 0) {
982 priv->radio_on = true;
983 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
984 }
985
986 return ret;
987}
988
989static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
990{
991 int ret;
992
993 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
994 bssid, ETH_ALEN);
995 if (ret < 0) {
996 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
997 bssid, ret);
998 return ret;
999 }
1000
1001 return ret;
1002}
1003
1004static int clear_bssid(struct usbnet *usbdev)
1005{
1006 static const u8 broadcast_mac[ETH_ALEN] = {
1007 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1008 };
1009
1010 return set_bssid(usbdev, broadcast_mac);
1011}
1012
1013static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1014{
1015 int ret, len;
1016
1017 len = ETH_ALEN;
1018 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1019 bssid, &len);
1020
1021 if (ret != 0)
1022 eth_zero_addr(bssid);
1023
1024 return ret;
1025}
1026
1027static int get_association_info(struct usbnet *usbdev,
1028 struct ndis_80211_assoc_info *info, int len)
1029{
1030 return rndis_query_oid(usbdev,
1031 RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1032 info, &len);
1033}
1034
1035static bool is_associated(struct usbnet *usbdev)
1036{
1037 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1038 u8 bssid[ETH_ALEN];
1039
1040 if (!priv->radio_on)
1041 return false;
1042
1043 return (get_bssid(usbdev, bssid) == 0 && !is_zero_ether_addr(bssid));
1044}
1045
1046static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1047{
1048 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1049 struct ndis_80211_ssid ssid;
1050 int i, ret = 0;
1051
1052 if (priv->radio_on) {
1053 ret = rndis_set_oid(usbdev,
1054 RNDIS_OID_802_11_DISASSOCIATE,
1055 NULL, 0);
1056 if (ret == 0) {
1057 priv->radio_on = false;
1058 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1059 __func__);
1060
1061 if (reset_ssid)
1062 msleep(100);
1063 }
1064 }
1065
1066 /* disassociate causes radio to be turned off; if reset_ssid
1067 * is given, set random ssid to enable radio */
1068 if (reset_ssid) {
1069 /* Set device to infrastructure mode so we don't get ad-hoc
1070 * 'media connect' indications with the random ssid.
1071 */
1072 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1073
1074 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1075 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1076 ssid.essid[0] = 0x1;
1077 ssid.essid[1] = 0xff;
1078 for (i = 2; i < sizeof(ssid.essid); i++)
1079 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1080 ret = set_essid(usbdev, &ssid);
1081 }
1082 return ret;
1083}
1084
1085static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1086 enum nl80211_auth_type auth_type, int keymgmt)
1087{
1088 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1089 __le32 tmp;
1090 int auth_mode, ret;
1091
1092 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1093 __func__, wpa_version, auth_type, keymgmt);
1094
1095 if (wpa_version & NL80211_WPA_VERSION_2) {
1096 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1097 auth_mode = NDIS_80211_AUTH_WPA2;
1098 else
1099 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1100 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1101 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1102 auth_mode = NDIS_80211_AUTH_WPA;
1103 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1104 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1105 else
1106 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1107 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1108 auth_mode = NDIS_80211_AUTH_SHARED;
1109 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1110 auth_mode = NDIS_80211_AUTH_OPEN;
1111 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1112 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1113 else
1114 return -ENOTSUPP;
1115
1116 tmp = cpu_to_le32(auth_mode);
1117 ret = rndis_set_oid(usbdev,
1118 RNDIS_OID_802_11_AUTHENTICATION_MODE,
1119 &tmp, sizeof(tmp));
1120 if (ret != 0) {
1121 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1122 ret);
1123 return ret;
1124 }
1125
1126 priv->wpa_version = wpa_version;
1127
1128 return 0;
1129}
1130
1131static int set_priv_filter(struct usbnet *usbdev)
1132{
1133 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1134 __le32 tmp;
1135
1136 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1137 __func__, priv->wpa_version);
1138
1139 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1140 priv->wpa_version & NL80211_WPA_VERSION_1)
1141 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1142 else
1143 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1144
1145 return rndis_set_oid(usbdev,
1146 RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1147 sizeof(tmp));
1148}
1149
1150static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1151{
1152 __le32 tmp;
1153 int encr_mode, ret;
1154
1155 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1156 __func__, pairwise, groupwise);
1157
1158 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1159 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1160 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1161 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1162 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1163 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1164 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1165 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1166 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1167 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1168 else
1169 encr_mode = NDIS_80211_ENCR_DISABLED;
1170
1171 tmp = cpu_to_le32(encr_mode);
1172 ret = rndis_set_oid(usbdev,
1173 RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1174 sizeof(tmp));
1175 if (ret != 0) {
1176 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1177 ret);
1178 return ret;
1179 }
1180
1181 return 0;
1182}
1183
1184static int set_infra_mode(struct usbnet *usbdev, int mode)
1185{
1186 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1187 __le32 tmp;
1188 int ret;
1189
1190 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1191 __func__, priv->infra_mode);
1192
1193 tmp = cpu_to_le32(mode);
1194 ret = rndis_set_oid(usbdev,
1195 RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1196 &tmp, sizeof(tmp));
1197 if (ret != 0) {
1198 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1199 ret);
1200 return ret;
1201 }
1202
1203 /* NDIS drivers clear keys when infrastructure mode is
1204 * changed. But Linux tools assume otherwise. So set the
1205 * keys */
1206 restore_keys(usbdev);
1207
1208 priv->infra_mode = mode;
1209 return 0;
1210}
1211
1212static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1213{
1214 __le32 tmp;
1215
1216 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1217
1218 if (rts_threshold == -1 || rts_threshold > 2347)
1219 rts_threshold = 2347;
1220
1221 tmp = cpu_to_le32(rts_threshold);
1222 return rndis_set_oid(usbdev,
1223 RNDIS_OID_802_11_RTS_THRESHOLD,
1224 &tmp, sizeof(tmp));
1225}
1226
1227static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1228{
1229 __le32 tmp;
1230
1231 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1232
1233 if (frag_threshold < 256 || frag_threshold > 2346)
1234 frag_threshold = 2346;
1235
1236 tmp = cpu_to_le32(frag_threshold);
1237 return rndis_set_oid(usbdev,
1238 RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1239 &tmp, sizeof(tmp));
1240}
1241
1242static void set_default_iw_params(struct usbnet *usbdev)
1243{
1244 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1245 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1246 RNDIS_WLAN_KEY_MGMT_NONE);
1247 set_priv_filter(usbdev);
1248 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1249}
1250
1251static int deauthenticate(struct usbnet *usbdev)
1252{
1253 int ret;
1254
1255 ret = disassociate(usbdev, true);
1256 set_default_iw_params(usbdev);
1257 return ret;
1258}
1259
1260static int set_channel(struct usbnet *usbdev, int channel)
1261{
1262 struct ndis_80211_conf config;
1263 unsigned int dsconfig;
1264 int len, ret;
1265
1266 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1267
1268 /* this OID is valid only when not associated */
1269 if (is_associated(usbdev))
1270 return 0;
1271
1272 dsconfig = 1000 *
1273 ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1274
1275 len = sizeof(config);
1276 ret = rndis_query_oid(usbdev,
1277 RNDIS_OID_802_11_CONFIGURATION,
1278 &config, &len);
1279 if (ret < 0) {
1280 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1281 __func__);
1282 return ret;
1283 }
1284
1285 config.ds_config = cpu_to_le32(dsconfig);
1286 ret = rndis_set_oid(usbdev,
1287 RNDIS_OID_802_11_CONFIGURATION,
1288 &config, sizeof(config));
1289
1290 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1291
1292 return ret;
1293}
1294
1295static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1296 u32 *beacon_period)
1297{
1298 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1299 struct ieee80211_channel *channel;
1300 struct ndis_80211_conf config;
1301 int len, ret;
1302
1303 /* Get channel and beacon interval */
1304 len = sizeof(config);
1305 ret = rndis_query_oid(usbdev,
1306 RNDIS_OID_802_11_CONFIGURATION,
1307 &config, &len);
1308 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1309 __func__, ret);
1310 if (ret < 0)
1311 return NULL;
1312
1313 channel = ieee80211_get_channel(priv->wdev.wiphy,
1314 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1315 if (!channel)
1316 return NULL;
1317
1318 if (beacon_period)
1319 *beacon_period = le32_to_cpu(config.beacon_period);
1320 return channel;
1321}
1322
1323/* index must be 0 - N, as per NDIS */
1324static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1325 u8 index)
1326{
1327 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1328 struct ndis_80211_wep_key ndis_key;
1329 u32 cipher;
1330 int ret;
1331
1332 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1333 __func__, index, key_len);
1334
1335 if (index >= RNDIS_WLAN_NUM_KEYS)
1336 return -EINVAL;
1337
1338 if (key_len == 5)
1339 cipher = WLAN_CIPHER_SUITE_WEP40;
1340 else if (key_len == 13)
1341 cipher = WLAN_CIPHER_SUITE_WEP104;
1342 else
1343 return -EINVAL;
1344
1345 memset(&ndis_key, 0, sizeof(ndis_key));
1346
1347 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1348 ndis_key.length = cpu_to_le32(key_len);
1349 ndis_key.index = cpu_to_le32(index);
1350 memcpy(&ndis_key.material, key, key_len);
1351
1352 if (index == priv->encr_tx_key_index) {
1353 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1354 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1355 RNDIS_WLAN_ALG_NONE);
1356 if (ret)
1357 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1358 ret);
1359 }
1360
1361 ret = rndis_set_oid(usbdev,
1362 RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1363 sizeof(ndis_key));
1364 if (ret != 0) {
1365 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1366 index + 1, ret);
1367 return ret;
1368 }
1369
1370 priv->encr_keys[index].len = key_len;
1371 priv->encr_keys[index].cipher = cipher;
1372 memcpy(&priv->encr_keys[index].material, key, key_len);
1373 eth_broadcast_addr(priv->encr_keys[index].bssid);
1374
1375 return 0;
1376}
1377
1378static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1379 u8 index, const u8 *addr, const u8 *rx_seq,
1380 int seq_len, u32 cipher, __le32 flags)
1381{
1382 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1383 struct ndis_80211_key ndis_key;
1384 bool is_addr_ok;
1385 int ret;
1386
1387 if (index >= RNDIS_WLAN_NUM_KEYS) {
1388 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1389 __func__, index);
1390 return -EINVAL;
1391 }
1392 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1393 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1394 __func__, key_len);
1395 return -EINVAL;
1396 }
1397 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1398 if (!rx_seq || seq_len <= 0) {
1399 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1400 __func__);
1401 return -EINVAL;
1402 }
1403 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1404 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1405 return -EINVAL;
1406 }
1407 }
1408
1409 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1410 !is_broadcast_ether_addr(addr);
1411 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1412 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1413 __func__, addr);
1414 return -EINVAL;
1415 }
1416
1417 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1418 __func__, index,
1419 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1420 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1421 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1422
1423 memset(&ndis_key, 0, sizeof(ndis_key));
1424
1425 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1426 sizeof(ndis_key.material) + key_len);
1427 ndis_key.length = cpu_to_le32(key_len);
1428 ndis_key.index = cpu_to_le32(index) | flags;
1429
1430 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1431 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1432 * different order than NDIS spec, so swap the order here. */
1433 memcpy(ndis_key.material, key, 16);
1434 memcpy(ndis_key.material + 16, key + 24, 8);
1435 memcpy(ndis_key.material + 24, key + 16, 8);
1436 } else
1437 memcpy(ndis_key.material, key, key_len);
1438
1439 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1440 memcpy(ndis_key.rsc, rx_seq, seq_len);
1441
1442 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1443 /* pairwise key */
1444 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1445 } else {
1446 /* group key */
1447 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1448 eth_broadcast_addr(ndis_key.bssid);
1449 else
1450 get_bssid(usbdev, ndis_key.bssid);
1451 }
1452
1453 ret = rndis_set_oid(usbdev,
1454 RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1455 le32_to_cpu(ndis_key.size));
1456 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1457 __func__, ret);
1458 if (ret != 0)
1459 return ret;
1460
1461 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1462 priv->encr_keys[index].len = key_len;
1463 priv->encr_keys[index].cipher = cipher;
1464 memcpy(&priv->encr_keys[index].material, key, key_len);
1465 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1466 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1467 else
1468 eth_broadcast_addr(priv->encr_keys[index].bssid);
1469
1470 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1471 priv->encr_tx_key_index = index;
1472
1473 return 0;
1474}
1475
1476static int restore_key(struct usbnet *usbdev, u8 key_idx)
1477{
1478 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1479 struct rndis_wlan_encr_key key;
1480
1481 if (is_wpa_key(priv, key_idx))
1482 return 0;
1483
1484 key = priv->encr_keys[key_idx];
1485
1486 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1487
1488 if (key.len == 0)
1489 return 0;
1490
1491 return add_wep_key(usbdev, key.material, key.len, key_idx);
1492}
1493
1494static void restore_keys(struct usbnet *usbdev)
1495{
1496 int i;
1497
1498 for (i = 0; i < 4; i++)
1499 restore_key(usbdev, i);
1500}
1501
1502static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1503{
1504 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1505}
1506
1507/* remove_key is for both wep and wpa */
1508static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1509{
1510 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1511 struct ndis_80211_remove_key remove_key;
1512 __le32 keyindex;
1513 bool is_wpa;
1514 int ret;
1515
1516 if (index >= RNDIS_WLAN_NUM_KEYS)
1517 return -ENOENT;
1518
1519 if (priv->encr_keys[index].len == 0)
1520 return 0;
1521
1522 is_wpa = is_wpa_key(priv, index);
1523
1524 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1525 __func__, index, is_wpa ? "wpa" : "wep",
1526 priv->encr_keys[index].len);
1527
1528 clear_key(priv, index);
1529
1530 if (is_wpa) {
1531 remove_key.size = cpu_to_le32(sizeof(remove_key));
1532 remove_key.index = cpu_to_le32(index);
1533 if (bssid) {
1534 /* pairwise key */
1535 if (!is_broadcast_ether_addr(bssid))
1536 remove_key.index |=
1537 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1538 memcpy(remove_key.bssid, bssid,
1539 sizeof(remove_key.bssid));
1540 } else
1541 memset(remove_key.bssid, 0xff,
1542 sizeof(remove_key.bssid));
1543
1544 ret = rndis_set_oid(usbdev,
1545 RNDIS_OID_802_11_REMOVE_KEY,
1546 &remove_key, sizeof(remove_key));
1547 if (ret != 0)
1548 return ret;
1549 } else {
1550 keyindex = cpu_to_le32(index);
1551 ret = rndis_set_oid(usbdev,
1552 RNDIS_OID_802_11_REMOVE_WEP,
1553 &keyindex, sizeof(keyindex));
1554 if (ret != 0) {
1555 netdev_warn(usbdev->net,
1556 "removing encryption key %d failed (%08X)\n",
1557 index, ret);
1558 return ret;
1559 }
1560 }
1561
1562 /* if it is transmit key, disable encryption */
1563 if (index == priv->encr_tx_key_index)
1564 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1565
1566 return 0;
1567}
1568
1569static void set_multicast_list(struct usbnet *usbdev)
1570{
1571 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1572 struct netdev_hw_addr *ha;
1573 __le32 filter, basefilter;
1574 int ret;
1575 char *mc_addrs = NULL;
1576 int mc_count;
1577
1578 basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1579 RNDIS_PACKET_TYPE_BROADCAST);
1580
1581 if (usbdev->net->flags & IFF_PROMISC) {
1582 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1583 RNDIS_PACKET_TYPE_ALL_LOCAL);
1584 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1585 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1586 }
1587
1588 if (filter != basefilter)
1589 goto set_filter;
1590
1591 /*
1592 * mc_list should be accessed holding the lock, so copy addresses to
1593 * local buffer first.
1594 */
1595 netif_addr_lock_bh(usbdev->net);
1596 mc_count = netdev_mc_count(usbdev->net);
1597 if (mc_count > priv->multicast_size) {
1598 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1599 } else if (mc_count) {
1600 int i = 0;
1601
1602 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1603 if (!mc_addrs) {
1604 netif_addr_unlock_bh(usbdev->net);
1605 return;
1606 }
1607
1608 netdev_for_each_mc_addr(ha, usbdev->net)
1609 memcpy(mc_addrs + i++ * ETH_ALEN,
1610 ha->addr, ETH_ALEN);
1611 }
1612 netif_addr_unlock_bh(usbdev->net);
1613
1614 if (filter != basefilter)
1615 goto set_filter;
1616
1617 if (mc_count) {
1618 ret = rndis_set_oid(usbdev,
1619 RNDIS_OID_802_3_MULTICAST_LIST,
1620 mc_addrs, mc_count * ETH_ALEN);
1621 kfree(mc_addrs);
1622 if (ret == 0)
1623 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1624 else
1625 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1626
1627 netdev_dbg(usbdev->net, "RNDIS_OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1628 mc_count, priv->multicast_size, ret);
1629 }
1630
1631set_filter:
1632 ret = rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
1633 sizeof(filter));
1634 if (ret < 0) {
1635 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1636 le32_to_cpu(filter));
1637 }
1638
1639 netdev_dbg(usbdev->net, "RNDIS_OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1640 le32_to_cpu(filter), ret);
1641}
1642
1643#ifdef DEBUG
1644static void debug_print_pmkids(struct usbnet *usbdev,
1645 struct ndis_80211_pmkid *pmkids,
1646 const char *func_str)
1647{
1648 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1649 int i, len, count, max_pmkids, entry_len;
1650
1651 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1652 len = le32_to_cpu(pmkids->length);
1653 count = le32_to_cpu(pmkids->bssid_info_count);
1654
1655 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1656
1657 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1658 "%d)\n", func_str, count, len, entry_len);
1659
1660 if (count > max_pmkids)
1661 count = max_pmkids;
1662
1663 for (i = 0; i < count; i++) {
1664 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1665
1666 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1667 "pmkid: %08X:%08X:%08X:%08X\n",
1668 func_str, pmkids->bssid_info[i].bssid,
1669 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1670 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1671 }
1672}
1673#else
1674static void debug_print_pmkids(struct usbnet *usbdev,
1675 struct ndis_80211_pmkid *pmkids,
1676 const char *func_str)
1677{
1678 return;
1679}
1680#endif
1681
1682static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1683{
1684 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1685 struct ndis_80211_pmkid *pmkids;
1686 int len, ret, max_pmkids;
1687
1688 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1689 len = struct_size(pmkids, bssid_info, max_pmkids);
1690
1691 pmkids = kzalloc(len, GFP_KERNEL);
1692 if (!pmkids)
1693 return ERR_PTR(-ENOMEM);
1694
1695 pmkids->length = cpu_to_le32(len);
1696 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1697
1698 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_PMKID,
1699 pmkids, &len);
1700 if (ret < 0) {
1701 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1702 " -> %d\n", __func__, len, max_pmkids, ret);
1703
1704 kfree(pmkids);
1705 return ERR_PTR(ret);
1706 }
1707
1708 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1709 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1710
1711 debug_print_pmkids(usbdev, pmkids, __func__);
1712
1713 return pmkids;
1714}
1715
1716static int set_device_pmkids(struct usbnet *usbdev,
1717 struct ndis_80211_pmkid *pmkids)
1718{
1719 int ret, len, num_pmkids;
1720
1721 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1722 len = struct_size(pmkids, bssid_info, num_pmkids);
1723 pmkids->length = cpu_to_le32(len);
1724
1725 debug_print_pmkids(usbdev, pmkids, __func__);
1726
1727 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1728 le32_to_cpu(pmkids->length));
1729 if (ret < 0) {
1730 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1731 "\n", __func__, len, num_pmkids, ret);
1732 }
1733
1734 kfree(pmkids);
1735 return ret;
1736}
1737
1738static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1739 struct ndis_80211_pmkid *pmkids,
1740 struct cfg80211_pmksa *pmksa,
1741 int max_pmkids)
1742{
1743 int i, err;
1744 unsigned int count;
1745
1746 count = le32_to_cpu(pmkids->bssid_info_count);
1747
1748 if (count > max_pmkids)
1749 count = max_pmkids;
1750
1751 for (i = 0; i < count; i++)
1752 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1753 pmksa->bssid))
1754 break;
1755
1756 /* pmkid not found */
1757 if (i == count) {
1758 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1759 __func__, pmksa->bssid);
1760 err = -ENOENT;
1761 goto error;
1762 }
1763
1764 for (; i + 1 < count; i++)
1765 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1766
1767 count--;
1768 pmkids->length = cpu_to_le32(struct_size(pmkids, bssid_info, count));
1769 pmkids->bssid_info_count = cpu_to_le32(count);
1770
1771 return pmkids;
1772error:
1773 kfree(pmkids);
1774 return ERR_PTR(err);
1775}
1776
1777static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1778 struct ndis_80211_pmkid *pmkids,
1779 struct cfg80211_pmksa *pmksa,
1780 int max_pmkids)
1781{
1782 struct ndis_80211_pmkid *new_pmkids;
1783 int i, err, newlen;
1784 unsigned int count;
1785
1786 count = le32_to_cpu(pmkids->bssid_info_count);
1787
1788 if (count > max_pmkids)
1789 count = max_pmkids;
1790
1791 /* update with new pmkid */
1792 for (i = 0; i < count; i++) {
1793 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1794 pmksa->bssid))
1795 continue;
1796
1797 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1798 WLAN_PMKID_LEN);
1799
1800 return pmkids;
1801 }
1802
1803 /* out of space, return error */
1804 if (i == max_pmkids) {
1805 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1806 err = -ENOSPC;
1807 goto error;
1808 }
1809
1810 /* add new pmkid */
1811 newlen = struct_size(pmkids, bssid_info, count + 1);
1812
1813 new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1814 if (!new_pmkids) {
1815 err = -ENOMEM;
1816 goto error;
1817 }
1818 pmkids = new_pmkids;
1819
1820 pmkids->length = cpu_to_le32(newlen);
1821 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1822
1823 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1824 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1825
1826 return pmkids;
1827error:
1828 kfree(pmkids);
1829 return ERR_PTR(err);
1830}
1831
1832/*
1833 * cfg80211 ops
1834 */
1835static int rndis_change_virtual_intf(struct wiphy *wiphy,
1836 struct net_device *dev,
1837 enum nl80211_iftype type,
1838 struct vif_params *params)
1839{
1840 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1841 struct usbnet *usbdev = priv->usbdev;
1842 int mode;
1843
1844 switch (type) {
1845 case NL80211_IFTYPE_ADHOC:
1846 mode = NDIS_80211_INFRA_ADHOC;
1847 break;
1848 case NL80211_IFTYPE_STATION:
1849 mode = NDIS_80211_INFRA_INFRA;
1850 break;
1851 default:
1852 return -EINVAL;
1853 }
1854
1855 priv->wdev.iftype = type;
1856
1857 return set_infra_mode(usbdev, mode);
1858}
1859
1860static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1861{
1862 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1863 struct usbnet *usbdev = priv->usbdev;
1864 int err;
1865
1866 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1867 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1868 if (err < 0)
1869 return err;
1870 }
1871
1872 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1873 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1874 if (err < 0)
1875 return err;
1876 }
1877
1878 return 0;
1879}
1880
1881static int rndis_set_tx_power(struct wiphy *wiphy,
1882 struct wireless_dev *wdev,
1883 enum nl80211_tx_power_setting type,
1884 int mbm)
1885{
1886 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1887 struct usbnet *usbdev = priv->usbdev;
1888
1889 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1890 __func__, type, mbm);
1891
1892 if (mbm < 0 || (mbm % 100))
1893 return -ENOTSUPP;
1894
1895 /* Device doesn't support changing txpower after initialization, only
1896 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1897 * currently used.
1898 */
1899 if (type == NL80211_TX_POWER_AUTOMATIC ||
1900 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1901 if (!priv->radio_on)
1902 disassociate(usbdev, true); /* turn on radio */
1903
1904 return 0;
1905 }
1906
1907 return -ENOTSUPP;
1908}
1909
1910static int rndis_get_tx_power(struct wiphy *wiphy,
1911 struct wireless_dev *wdev,
1912 int *dbm)
1913{
1914 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1915 struct usbnet *usbdev = priv->usbdev;
1916
1917 *dbm = get_bcm4320_power_dbm(priv);
1918
1919 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1920
1921 return 0;
1922}
1923
1924#define SCAN_DELAY_JIFFIES (6 * HZ)
1925static int rndis_scan(struct wiphy *wiphy,
1926 struct cfg80211_scan_request *request)
1927{
1928 struct net_device *dev = request->wdev->netdev;
1929 struct usbnet *usbdev = netdev_priv(dev);
1930 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1931 int ret;
1932 int delay = SCAN_DELAY_JIFFIES;
1933
1934 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1935
1936 /* Get current bssid list from device before new scan, as new scan
1937 * clears internal bssid list.
1938 */
1939 rndis_check_bssid_list(usbdev, NULL, NULL);
1940
1941 if (priv->scan_request && priv->scan_request != request)
1942 return -EBUSY;
1943
1944 priv->scan_request = request;
1945
1946 ret = rndis_start_bssid_list_scan(usbdev);
1947 if (ret == 0) {
1948 if (priv->device_type == RNDIS_BCM4320A)
1949 delay = HZ;
1950
1951 /* Wait before retrieving scan results from device */
1952 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1953 }
1954
1955 return ret;
1956}
1957
1958static bool rndis_bss_info_update(struct usbnet *usbdev,
1959 struct ndis_80211_bssid_ex *bssid)
1960{
1961 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1962 struct ieee80211_channel *channel;
1963 struct cfg80211_bss *bss;
1964 s32 signal;
1965 u64 timestamp;
1966 u16 capability;
1967 u16 beacon_interval;
1968 struct ndis_80211_fixed_ies *fixed;
1969 int ie_len, bssid_len;
1970 u8 *ie;
1971
1972 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1973 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1974
1975 /* parse bssid structure */
1976 bssid_len = le32_to_cpu(bssid->length);
1977
1978 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1979 sizeof(struct ndis_80211_fixed_ies))
1980 return NULL;
1981
1982 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1983
1984 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1985 ie_len = min(bssid_len - (int)sizeof(*bssid),
1986 (int)le32_to_cpu(bssid->ie_length));
1987 ie_len -= sizeof(struct ndis_80211_fixed_ies);
1988 if (ie_len < 0)
1989 return NULL;
1990
1991 /* extract data for cfg80211_inform_bss */
1992 channel = ieee80211_get_channel(priv->wdev.wiphy,
1993 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1994 if (!channel)
1995 return NULL;
1996
1997 signal = level_to_qual(le32_to_cpu(bssid->rssi));
1998 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1999 capability = le16_to_cpu(fixed->capabilities);
2000 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2001
2002 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2003 CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2004 timestamp, capability, beacon_interval,
2005 ie, ie_len, signal, GFP_KERNEL);
2006 cfg80211_put_bss(priv->wdev.wiphy, bss);
2007
2008 return (bss != NULL);
2009}
2010
2011static struct ndis_80211_bssid_ex *next_bssid_list_item(
2012 struct ndis_80211_bssid_ex *bssid,
2013 int *bssid_len, void *buf, int len)
2014{
2015 void *buf_end, *bssid_end;
2016
2017 buf_end = (char *)buf + len;
2018 bssid_end = (char *)bssid + *bssid_len;
2019
2020 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2021 *bssid_len = 0;
2022 return NULL;
2023 } else {
2024 bssid = (void *)((char *)bssid + *bssid_len);
2025 *bssid_len = le32_to_cpu(bssid->length);
2026 return bssid;
2027 }
2028}
2029
2030static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2031 int bssid_len, void *buf, int len)
2032{
2033 void *buf_end, *bssid_end;
2034
2035 if (!bssid || bssid_len <= 0 || bssid_len > len)
2036 return false;
2037
2038 buf_end = (char *)buf + len;
2039 bssid_end = (char *)bssid + bssid_len;
2040
2041 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2042}
2043
2044static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2045 bool *matched)
2046{
2047 void *buf = NULL;
2048 struct ndis_80211_bssid_list_ex *bssid_list;
2049 struct ndis_80211_bssid_ex *bssid;
2050 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2051
2052 netdev_dbg(usbdev->net, "%s()\n", __func__);
2053
2054 len = CONTROL_BUFFER_SIZE;
2055resize_buf:
2056 buf = kzalloc(len, GFP_KERNEL);
2057 if (!buf) {
2058 ret = -ENOMEM;
2059 goto out;
2060 }
2061
2062 /* BSSID-list might have got bigger last time we checked, keep
2063 * resizing until it won't get any bigger.
2064 */
2065 new_len = len;
2066 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2067 buf, &new_len);
2068 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2069 goto out;
2070
2071 if (new_len > len) {
2072 len = new_len;
2073 kfree(buf);
2074 goto resize_buf;
2075 }
2076
2077 len = new_len;
2078
2079 bssid_list = buf;
2080 count = le32_to_cpu(bssid_list->num_items);
2081 real_count = 0;
2082 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2083
2084 bssid_len = 0;
2085 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2086
2087 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2088 * received 'num_items' and walking through full bssid buffer instead.
2089 */
2090 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2091 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2092 matched) {
2093 if (ether_addr_equal(bssid->mac, match_bssid))
2094 *matched = true;
2095 }
2096
2097 real_count++;
2098 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2099 }
2100
2101 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2102 " %d\n", __func__, count, real_count);
2103
2104out:
2105 kfree(buf);
2106 return ret;
2107}
2108
2109static void rndis_get_scan_results(struct work_struct *work)
2110{
2111 struct rndis_wlan_private *priv =
2112 container_of(work, struct rndis_wlan_private, scan_work.work);
2113 struct usbnet *usbdev = priv->usbdev;
2114 struct cfg80211_scan_info info = {};
2115 int ret;
2116
2117 netdev_dbg(usbdev->net, "get_scan_results\n");
2118
2119 if (!priv->scan_request)
2120 return;
2121
2122 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2123
2124 info.aborted = ret < 0;
2125 cfg80211_scan_done(priv->scan_request, &info);
2126
2127 priv->scan_request = NULL;
2128}
2129
2130static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2131 struct cfg80211_connect_params *sme)
2132{
2133 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2134 struct usbnet *usbdev = priv->usbdev;
2135 struct ieee80211_channel *channel = sme->channel;
2136 struct ndis_80211_ssid ssid;
2137 int pairwise = RNDIS_WLAN_ALG_NONE;
2138 int groupwise = RNDIS_WLAN_ALG_NONE;
2139 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2140 int length, i, ret, chan = -1;
2141
2142 if (channel)
2143 chan = ieee80211_frequency_to_channel(channel->center_freq);
2144
2145 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2146 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2147 pairwise |=
2148 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2149
2150 if (sme->crypto.n_ciphers_pairwise > 0 &&
2151 pairwise == RNDIS_WLAN_ALG_NONE) {
2152 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2153 return -ENOTSUPP;
2154 }
2155
2156 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2157 keymgmt |=
2158 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2159
2160 if (sme->crypto.n_akm_suites > 0 &&
2161 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2162 netdev_err(usbdev->net, "Invalid keymgmt\n");
2163 return -ENOTSUPP;
2164 }
2165
2166 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2167 sme->ssid, sme->bssid, chan,
2168 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2169 groupwise, pairwise, keymgmt);
2170
2171 if (is_associated(usbdev))
2172 disassociate(usbdev, false);
2173
2174 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2175 if (ret < 0) {
2176 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2177 ret);
2178 goto err_turn_radio_on;
2179 }
2180
2181 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2182 keymgmt);
2183 if (ret < 0) {
2184 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2185 ret);
2186 goto err_turn_radio_on;
2187 }
2188
2189 set_priv_filter(usbdev);
2190
2191 ret = set_encr_mode(usbdev, pairwise, groupwise);
2192 if (ret < 0) {
2193 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2194 ret);
2195 goto err_turn_radio_on;
2196 }
2197
2198 if (channel) {
2199 ret = set_channel(usbdev, chan);
2200 if (ret < 0) {
2201 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2202 ret);
2203 goto err_turn_radio_on;
2204 }
2205 }
2206
2207 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2208 priv->encr_tx_key_index = sme->key_idx;
2209 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2210 if (ret < 0) {
2211 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2212 ret, sme->key_len, sme->key_idx);
2213 goto err_turn_radio_on;
2214 }
2215 }
2216
2217 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2218 !is_broadcast_ether_addr(sme->bssid)) {
2219 ret = set_bssid(usbdev, sme->bssid);
2220 if (ret < 0) {
2221 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2222 ret);
2223 goto err_turn_radio_on;
2224 }
2225 } else
2226 clear_bssid(usbdev);
2227
2228 length = sme->ssid_len;
2229 if (length > NDIS_802_11_LENGTH_SSID)
2230 length = NDIS_802_11_LENGTH_SSID;
2231
2232 memset(&ssid, 0, sizeof(ssid));
2233 ssid.length = cpu_to_le32(length);
2234 memcpy(ssid.essid, sme->ssid, length);
2235
2236 /* Pause and purge rx queue, so we don't pass packets before
2237 * 'media connect'-indication.
2238 */
2239 usbnet_pause_rx(usbdev);
2240 usbnet_purge_paused_rxq(usbdev);
2241
2242 ret = set_essid(usbdev, &ssid);
2243 if (ret < 0)
2244 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2245 return ret;
2246
2247err_turn_radio_on:
2248 disassociate(usbdev, true);
2249
2250 return ret;
2251}
2252
2253static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2254 u16 reason_code)
2255{
2256 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2257 struct usbnet *usbdev = priv->usbdev;
2258
2259 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2260
2261 priv->connected = false;
2262 eth_zero_addr(priv->bssid);
2263
2264 return deauthenticate(usbdev);
2265}
2266
2267static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2268 struct cfg80211_ibss_params *params)
2269{
2270 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2271 struct usbnet *usbdev = priv->usbdev;
2272 struct ieee80211_channel *channel = params->chandef.chan;
2273 struct ndis_80211_ssid ssid;
2274 enum nl80211_auth_type auth_type;
2275 int ret, alg, length, chan = -1;
2276
2277 if (channel)
2278 chan = ieee80211_frequency_to_channel(channel->center_freq);
2279
2280 /* TODO: How to handle ad-hoc encryption?
2281 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2282 * pre-shared for encryption (open/shared/wpa), is key set before
2283 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2284 */
2285 if (params->privacy) {
2286 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2287 alg = RNDIS_WLAN_ALG_WEP;
2288 } else {
2289 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2290 alg = RNDIS_WLAN_ALG_NONE;
2291 }
2292
2293 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2294 params->ssid, params->bssid, chan, params->privacy);
2295
2296 if (is_associated(usbdev))
2297 disassociate(usbdev, false);
2298
2299 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2300 if (ret < 0) {
2301 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2302 ret);
2303 goto err_turn_radio_on;
2304 }
2305
2306 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2307 if (ret < 0) {
2308 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2309 ret);
2310 goto err_turn_radio_on;
2311 }
2312
2313 set_priv_filter(usbdev);
2314
2315 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2316 if (ret < 0) {
2317 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2318 ret);
2319 goto err_turn_radio_on;
2320 }
2321
2322 if (channel) {
2323 ret = set_channel(usbdev, chan);
2324 if (ret < 0) {
2325 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2326 ret);
2327 goto err_turn_radio_on;
2328 }
2329 }
2330
2331 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2332 !is_broadcast_ether_addr(params->bssid)) {
2333 ret = set_bssid(usbdev, params->bssid);
2334 if (ret < 0) {
2335 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2336 ret);
2337 goto err_turn_radio_on;
2338 }
2339 } else
2340 clear_bssid(usbdev);
2341
2342 length = params->ssid_len;
2343 if (length > NDIS_802_11_LENGTH_SSID)
2344 length = NDIS_802_11_LENGTH_SSID;
2345
2346 memset(&ssid, 0, sizeof(ssid));
2347 ssid.length = cpu_to_le32(length);
2348 memcpy(ssid.essid, params->ssid, length);
2349
2350 /* Don't need to pause rx queue for ad-hoc. */
2351 usbnet_purge_paused_rxq(usbdev);
2352 usbnet_resume_rx(usbdev);
2353
2354 ret = set_essid(usbdev, &ssid);
2355 if (ret < 0)
2356 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2357 ret);
2358 return ret;
2359
2360err_turn_radio_on:
2361 disassociate(usbdev, true);
2362
2363 return ret;
2364}
2365
2366static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2367{
2368 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2369 struct usbnet *usbdev = priv->usbdev;
2370
2371 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2372
2373 priv->connected = false;
2374 eth_zero_addr(priv->bssid);
2375
2376 return deauthenticate(usbdev);
2377}
2378
2379static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2380 u8 key_index, bool pairwise, const u8 *mac_addr,
2381 struct key_params *params)
2382{
2383 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2384 struct usbnet *usbdev = priv->usbdev;
2385 __le32 flags;
2386
2387 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2388 __func__, key_index, mac_addr, params->cipher);
2389
2390 switch (params->cipher) {
2391 case WLAN_CIPHER_SUITE_WEP40:
2392 case WLAN_CIPHER_SUITE_WEP104:
2393 return add_wep_key(usbdev, params->key, params->key_len,
2394 key_index);
2395 case WLAN_CIPHER_SUITE_TKIP:
2396 case WLAN_CIPHER_SUITE_CCMP:
2397 flags = 0;
2398
2399 if (params->seq && params->seq_len > 0)
2400 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2401 if (mac_addr)
2402 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2403 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2404
2405 return add_wpa_key(usbdev, params->key, params->key_len,
2406 key_index, mac_addr, params->seq,
2407 params->seq_len, params->cipher, flags);
2408 default:
2409 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2410 __func__, params->cipher);
2411 return -ENOTSUPP;
2412 }
2413}
2414
2415static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2416 u8 key_index, bool pairwise, const u8 *mac_addr)
2417{
2418 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2419 struct usbnet *usbdev = priv->usbdev;
2420
2421 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2422
2423 return remove_key(usbdev, key_index, mac_addr);
2424}
2425
2426static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2427 u8 key_index, bool unicast, bool multicast)
2428{
2429 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2430 struct usbnet *usbdev = priv->usbdev;
2431 struct rndis_wlan_encr_key key;
2432
2433 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2434
2435 if (key_index >= RNDIS_WLAN_NUM_KEYS)
2436 return -ENOENT;
2437
2438 priv->encr_tx_key_index = key_index;
2439
2440 if (is_wpa_key(priv, key_index))
2441 return 0;
2442
2443 key = priv->encr_keys[key_index];
2444
2445 return add_wep_key(usbdev, key.material, key.len, key_index);
2446}
2447
2448static void rndis_fill_station_info(struct usbnet *usbdev,
2449 struct station_info *sinfo)
2450{
2451 __le32 linkspeed, rssi;
2452 int ret, len;
2453
2454 memset(sinfo, 0, sizeof(*sinfo));
2455
2456 len = sizeof(linkspeed);
2457 ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2458 if (ret == 0) {
2459 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2460 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_TX_BITRATE);
2461 }
2462
2463 len = sizeof(rssi);
2464 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2465 &rssi, &len);
2466 if (ret == 0) {
2467 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2468 sinfo->filled |= BIT_ULL(NL80211_STA_INFO_SIGNAL);
2469 }
2470}
2471
2472static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2473 const u8 *mac, struct station_info *sinfo)
2474{
2475 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2476 struct usbnet *usbdev = priv->usbdev;
2477
2478 if (!ether_addr_equal(priv->bssid, mac))
2479 return -ENOENT;
2480
2481 rndis_fill_station_info(usbdev, sinfo);
2482
2483 return 0;
2484}
2485
2486static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2487 int idx, u8 *mac, struct station_info *sinfo)
2488{
2489 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2490 struct usbnet *usbdev = priv->usbdev;
2491
2492 if (idx != 0)
2493 return -ENOENT;
2494
2495 memcpy(mac, priv->bssid, ETH_ALEN);
2496
2497 rndis_fill_station_info(usbdev, sinfo);
2498
2499 return 0;
2500}
2501
2502static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2503 struct cfg80211_pmksa *pmksa)
2504{
2505 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2506 struct usbnet *usbdev = priv->usbdev;
2507 struct ndis_80211_pmkid *pmkids;
2508 u32 *tmp = (u32 *)pmksa->pmkid;
2509
2510 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2511 pmksa->bssid,
2512 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2513 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2514
2515 pmkids = get_device_pmkids(usbdev);
2516 if (IS_ERR(pmkids)) {
2517 /* couldn't read PMKID cache from device */
2518 return PTR_ERR(pmkids);
2519 }
2520
2521 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2522 if (IS_ERR(pmkids)) {
2523 /* not found, list full, etc */
2524 return PTR_ERR(pmkids);
2525 }
2526
2527 return set_device_pmkids(usbdev, pmkids);
2528}
2529
2530static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2531 struct cfg80211_pmksa *pmksa)
2532{
2533 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2534 struct usbnet *usbdev = priv->usbdev;
2535 struct ndis_80211_pmkid *pmkids;
2536 u32 *tmp = (u32 *)pmksa->pmkid;
2537
2538 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2539 pmksa->bssid,
2540 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2541 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2542
2543 pmkids = get_device_pmkids(usbdev);
2544 if (IS_ERR(pmkids)) {
2545 /* Couldn't read PMKID cache from device */
2546 return PTR_ERR(pmkids);
2547 }
2548
2549 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2550 if (IS_ERR(pmkids)) {
2551 /* not found, etc */
2552 return PTR_ERR(pmkids);
2553 }
2554
2555 return set_device_pmkids(usbdev, pmkids);
2556}
2557
2558static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2559{
2560 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2561 struct usbnet *usbdev = priv->usbdev;
2562 struct ndis_80211_pmkid pmkid;
2563
2564 netdev_dbg(usbdev->net, "%s()\n", __func__);
2565
2566 memset(&pmkid, 0, sizeof(pmkid));
2567
2568 pmkid.length = cpu_to_le32(sizeof(pmkid));
2569 pmkid.bssid_info_count = cpu_to_le32(0);
2570
2571 return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2572 &pmkid, sizeof(pmkid));
2573}
2574
2575static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2576 bool enabled, int timeout)
2577{
2578 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2579 struct usbnet *usbdev = priv->usbdev;
2580 int power_mode;
2581 __le32 mode;
2582 int ret;
2583
2584 if (priv->device_type != RNDIS_BCM4320B)
2585 return -ENOTSUPP;
2586
2587 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2588 enabled ? "enabled" : "disabled",
2589 timeout);
2590
2591 if (enabled)
2592 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2593 else
2594 power_mode = NDIS_80211_POWER_MODE_CAM;
2595
2596 if (power_mode == priv->power_mode)
2597 return 0;
2598
2599 priv->power_mode = power_mode;
2600
2601 mode = cpu_to_le32(power_mode);
2602 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2603 &mode, sizeof(mode));
2604
2605 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2606 __func__, ret);
2607
2608 return ret;
2609}
2610
2611static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2612 struct net_device *dev,
2613 s32 rssi_thold, u32 rssi_hyst)
2614{
2615 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2616
2617 priv->cqm_rssi_thold = rssi_thold;
2618 priv->cqm_rssi_hyst = rssi_hyst;
2619 priv->last_cqm_event_rssi = 0;
2620
2621 return 0;
2622}
2623
2624static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2625 struct ndis_80211_assoc_info *info)
2626{
2627 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2628 struct ieee80211_channel *channel;
2629 struct ndis_80211_ssid ssid;
2630 struct cfg80211_bss *bss;
2631 s32 signal;
2632 u64 timestamp;
2633 u16 capability;
2634 u32 beacon_period = 0;
2635 __le32 rssi;
2636 u8 ie_buf[34];
2637 int len, ret, ie_len;
2638
2639 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2640 len = sizeof(rssi);
2641 rssi = 0;
2642 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2643 &rssi, &len);
2644 signal = level_to_qual(le32_to_cpu(rssi));
2645
2646 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2647 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2648 level_to_qual(le32_to_cpu(rssi)));
2649
2650 /* Get AP capabilities */
2651 if (info) {
2652 capability = le16_to_cpu(info->resp_ie.capa);
2653 } else {
2654 /* Set atleast ESS/IBSS capability */
2655 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2656 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2657 }
2658
2659 /* Get channel and beacon interval */
2660 channel = get_current_channel(usbdev, &beacon_period);
2661 if (!channel) {
2662 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2663 __func__);
2664 return;
2665 }
2666
2667 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2668 len = sizeof(ssid);
2669 memset(&ssid, 0, sizeof(ssid));
2670 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2671 &ssid, &len);
2672 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2673 "'%.32s'\n", __func__, ret,
2674 le32_to_cpu(ssid.length), ssid.essid);
2675
2676 if (le32_to_cpu(ssid.length) > 32)
2677 ssid.length = cpu_to_le32(32);
2678
2679 ie_buf[0] = WLAN_EID_SSID;
2680 ie_buf[1] = le32_to_cpu(ssid.length);
2681 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2682
2683 ie_len = le32_to_cpu(ssid.length) + 2;
2684
2685 /* no tsf */
2686 timestamp = 0;
2687
2688 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2689 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2690 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2691 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2692 ssid.essid, signal);
2693
2694 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2695 CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2696 timestamp, capability, beacon_period,
2697 ie_buf, ie_len, signal, GFP_KERNEL);
2698 cfg80211_put_bss(priv->wdev.wiphy, bss);
2699}
2700
2701/*
2702 * workers, indication handlers, device poller
2703 */
2704static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2705{
2706 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2707 struct ndis_80211_assoc_info *info = NULL;
2708 u8 bssid[ETH_ALEN];
2709 unsigned int resp_ie_len, req_ie_len;
2710 unsigned int offset;
2711 u8 *req_ie, *resp_ie;
2712 int ret;
2713 bool roamed = false;
2714 bool match_bss;
2715
2716 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2717 /* received media connect indication while connected, either
2718 * device reassociated with same AP or roamed to new. */
2719 roamed = true;
2720 }
2721
2722 req_ie_len = 0;
2723 resp_ie_len = 0;
2724 req_ie = NULL;
2725 resp_ie = NULL;
2726
2727 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2728 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2729 if (!info) {
2730 /* No memory? Try resume work later */
2731 set_bit(WORK_LINK_UP, &priv->work_pending);
2732 queue_work(priv->workqueue, &priv->work);
2733 return;
2734 }
2735
2736 /* Get association info IEs from device. */
2737 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2738 if (!ret) {
2739 req_ie_len = le32_to_cpu(info->req_ie_length);
2740 if (req_ie_len > CONTROL_BUFFER_SIZE)
2741 req_ie_len = CONTROL_BUFFER_SIZE;
2742 if (req_ie_len != 0) {
2743 offset = le32_to_cpu(info->offset_req_ies);
2744
2745 if (offset > CONTROL_BUFFER_SIZE)
2746 offset = CONTROL_BUFFER_SIZE;
2747
2748 req_ie = (u8 *)info + offset;
2749
2750 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2751 req_ie_len =
2752 CONTROL_BUFFER_SIZE - offset;
2753 }
2754
2755 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2756 if (resp_ie_len > CONTROL_BUFFER_SIZE)
2757 resp_ie_len = CONTROL_BUFFER_SIZE;
2758 if (resp_ie_len != 0) {
2759 offset = le32_to_cpu(info->offset_resp_ies);
2760
2761 if (offset > CONTROL_BUFFER_SIZE)
2762 offset = CONTROL_BUFFER_SIZE;
2763
2764 resp_ie = (u8 *)info + offset;
2765
2766 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2767 resp_ie_len =
2768 CONTROL_BUFFER_SIZE - offset;
2769 }
2770 } else {
2771 /* Since rndis_wlan_craft_connected_bss() might use info
2772 * later and expects info to contain valid data if
2773 * non-null, free info and set NULL here.
2774 */
2775 kfree(info);
2776 info = NULL;
2777 }
2778 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2779 return;
2780
2781 ret = get_bssid(usbdev, bssid);
2782 if (ret < 0)
2783 memset(bssid, 0, sizeof(bssid));
2784
2785 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2786 bssid, roamed ? " roamed" : "");
2787
2788 /* Internal bss list in device should contain at least the currently
2789 * connected bss and we can get it to cfg80211 with
2790 * rndis_check_bssid_list().
2791 *
2792 * NDIS spec says: "If the device is associated, but the associated
2793 * BSSID is not in its BSSID scan list, then the driver must add an
2794 * entry for the BSSID at the end of the data that it returns in
2795 * response to query of RNDIS_OID_802_11_BSSID_LIST."
2796 *
2797 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2798 */
2799 match_bss = false;
2800 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2801
2802 if (!is_zero_ether_addr(bssid) && !match_bss) {
2803 /* Couldn't get bss from device, we need to manually craft bss
2804 * for cfg80211.
2805 */
2806 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2807 }
2808
2809 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2810 if (!roamed) {
2811 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2812 req_ie_len, resp_ie,
2813 resp_ie_len, 0, GFP_KERNEL);
2814 } else {
2815 struct cfg80211_roam_info roam_info = {
2816 .channel = get_current_channel(usbdev, NULL),
2817 .bssid = bssid,
2818 .req_ie = req_ie,
2819 .req_ie_len = req_ie_len,
2820 .resp_ie = resp_ie,
2821 .resp_ie_len = resp_ie_len,
2822 };
2823
2824 cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2825 }
2826 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2827 cfg80211_ibss_joined(usbdev->net, bssid,
2828 get_current_channel(usbdev, NULL),
2829 GFP_KERNEL);
2830
2831 kfree(info);
2832
2833 priv->connected = true;
2834 memcpy(priv->bssid, bssid, ETH_ALEN);
2835
2836 usbnet_resume_rx(usbdev);
2837 netif_carrier_on(usbdev->net);
2838}
2839
2840static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2841{
2842 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2843
2844 if (priv->connected) {
2845 priv->connected = false;
2846 eth_zero_addr(priv->bssid);
2847
2848 deauthenticate(usbdev);
2849
2850 cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2851 }
2852
2853 netif_carrier_off(usbdev->net);
2854}
2855
2856static void rndis_wlan_worker(struct work_struct *work)
2857{
2858 struct rndis_wlan_private *priv =
2859 container_of(work, struct rndis_wlan_private, work);
2860 struct usbnet *usbdev = priv->usbdev;
2861
2862 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2863 rndis_wlan_do_link_up_work(usbdev);
2864
2865 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2866 rndis_wlan_do_link_down_work(usbdev);
2867
2868 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2869 set_multicast_list(usbdev);
2870}
2871
2872static void rndis_wlan_set_multicast_list(struct net_device *dev)
2873{
2874 struct usbnet *usbdev = netdev_priv(dev);
2875 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2876
2877 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2878 return;
2879
2880 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2881 queue_work(priv->workqueue, &priv->work);
2882}
2883
2884static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2885 struct ndis_80211_status_indication *indication,
2886 int len)
2887{
2888 u8 *buf;
2889 const char *type;
2890 int flags, buflen, key_id;
2891 bool pairwise_error, group_error;
2892 struct ndis_80211_auth_request *auth_req;
2893 enum nl80211_key_type key_type;
2894
2895 /* must have at least one array entry */
2896 if (len < offsetof(struct ndis_80211_status_indication, u) +
2897 sizeof(struct ndis_80211_auth_request)) {
2898 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2899 len);
2900 return;
2901 }
2902
2903 buf = (void *)&indication->u.auth_request[0];
2904 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2905
2906 while (buflen >= sizeof(*auth_req)) {
2907 auth_req = (void *)buf;
2908 if (buflen < le32_to_cpu(auth_req->length))
2909 return;
2910 type = "unknown";
2911 flags = le32_to_cpu(auth_req->flags);
2912 pairwise_error = false;
2913 group_error = false;
2914
2915 if (flags & 0x1)
2916 type = "reauth request";
2917 if (flags & 0x2)
2918 type = "key update request";
2919 if (flags & 0x6) {
2920 pairwise_error = true;
2921 type = "pairwise_error";
2922 }
2923 if (flags & 0xe) {
2924 group_error = true;
2925 type = "group_error";
2926 }
2927
2928 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2929 type, le32_to_cpu(auth_req->flags));
2930
2931 if (pairwise_error) {
2932 key_type = NL80211_KEYTYPE_PAIRWISE;
2933 key_id = -1;
2934
2935 cfg80211_michael_mic_failure(usbdev->net,
2936 auth_req->bssid,
2937 key_type, key_id, NULL,
2938 GFP_KERNEL);
2939 }
2940
2941 if (group_error) {
2942 key_type = NL80211_KEYTYPE_GROUP;
2943 key_id = -1;
2944
2945 cfg80211_michael_mic_failure(usbdev->net,
2946 auth_req->bssid,
2947 key_type, key_id, NULL,
2948 GFP_KERNEL);
2949 }
2950
2951 buflen -= le32_to_cpu(auth_req->length);
2952 buf += le32_to_cpu(auth_req->length);
2953 }
2954}
2955
2956static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2957 struct ndis_80211_status_indication *indication,
2958 int len)
2959{
2960 struct ndis_80211_pmkid_cand_list *cand_list;
2961 int list_len, expected_len, i;
2962
2963 if (len < offsetof(struct ndis_80211_status_indication, u) +
2964 sizeof(struct ndis_80211_pmkid_cand_list)) {
2965 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2966 len);
2967 return;
2968 }
2969
2970 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2971 sizeof(struct ndis_80211_pmkid_candidate);
2972 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2973 offsetof(struct ndis_80211_status_indication, u);
2974
2975 if (len < expected_len) {
2976 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2977 len, expected_len);
2978 return;
2979 }
2980
2981 cand_list = &indication->u.cand_list;
2982
2983 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2984 le32_to_cpu(cand_list->version),
2985 le32_to_cpu(cand_list->num_candidates));
2986
2987 if (le32_to_cpu(cand_list->version) != 1)
2988 return;
2989
2990 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2991 struct ndis_80211_pmkid_candidate *cand =
2992 &cand_list->candidate_list[i];
2993 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
2994
2995 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
2996 i, le32_to_cpu(cand->flags), preauth, cand->bssid);
2997
2998 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
2999 preauth, GFP_ATOMIC);
3000 }
3001}
3002
3003static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3004 struct rndis_indicate *msg, int buflen)
3005{
3006 struct ndis_80211_status_indication *indication;
3007 unsigned int len, offset;
3008
3009 offset = offsetof(struct rndis_indicate, status) +
3010 le32_to_cpu(msg->offset);
3011 len = le32_to_cpu(msg->length);
3012
3013 if (len < 8) {
3014 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3015 len);
3016 return;
3017 }
3018
3019 if (len > buflen || offset > buflen || offset + len > buflen) {
3020 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3021 offset + len, buflen);
3022 return;
3023 }
3024
3025 indication = (void *)((u8 *)msg + offset);
3026
3027 switch (le32_to_cpu(indication->status_type)) {
3028 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3029 netdev_info(usbdev->net, "radio state indication: %i\n",
3030 le32_to_cpu(indication->u.radio_status));
3031 return;
3032
3033 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3034 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3035 le32_to_cpu(indication->u.media_stream_mode));
3036 return;
3037
3038 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3039 rndis_wlan_auth_indication(usbdev, indication, len);
3040 return;
3041
3042 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3043 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3044 return;
3045
3046 default:
3047 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3048 le32_to_cpu(indication->status_type));
3049 }
3050}
3051
3052static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3053{
3054 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3055 struct rndis_indicate *msg = ind;
3056
3057 switch (le32_to_cpu(msg->status)) {
3058 case RNDIS_STATUS_MEDIA_CONNECT:
3059 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3060 /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3061 * "media connect" indications which confuses driver
3062 * and userspace to think that device is
3063 * roaming/reassociating when it isn't.
3064 */
3065 netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3066 return;
3067 }
3068
3069 usbnet_pause_rx(usbdev);
3070
3071 netdev_info(usbdev->net, "media connect\n");
3072
3073 /* queue work to avoid recursive calls into rndis_command */
3074 set_bit(WORK_LINK_UP, &priv->work_pending);
3075 queue_work(priv->workqueue, &priv->work);
3076 break;
3077
3078 case RNDIS_STATUS_MEDIA_DISCONNECT:
3079 netdev_info(usbdev->net, "media disconnect\n");
3080
3081 /* queue work to avoid recursive calls into rndis_command */
3082 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3083 queue_work(priv->workqueue, &priv->work);
3084 break;
3085
3086 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3087 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3088 break;
3089
3090 default:
3091 netdev_info(usbdev->net, "indication: 0x%08x\n",
3092 le32_to_cpu(msg->status));
3093 break;
3094 }
3095}
3096
3097static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3098{
3099 struct {
3100 __le32 num_items;
3101 __le32 items[8];
3102 } networks_supported;
3103 struct ndis_80211_capability caps;
3104 int len, retval, i, n;
3105 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3106
3107 /* determine supported modes */
3108 len = sizeof(networks_supported);
3109 retval = rndis_query_oid(usbdev,
3110 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3111 &networks_supported, &len);
3112 if (!retval) {
3113 n = le32_to_cpu(networks_supported.num_items);
3114 if (n > 8)
3115 n = 8;
3116 for (i = 0; i < n; i++) {
3117 switch (le32_to_cpu(networks_supported.items[i])) {
3118 case NDIS_80211_TYPE_FREQ_HOP:
3119 case NDIS_80211_TYPE_DIRECT_SEQ:
3120 priv->caps |= CAP_MODE_80211B;
3121 break;
3122 case NDIS_80211_TYPE_OFDM_A:
3123 priv->caps |= CAP_MODE_80211A;
3124 break;
3125 case NDIS_80211_TYPE_OFDM_G:
3126 priv->caps |= CAP_MODE_80211G;
3127 break;
3128 }
3129 }
3130 }
3131
3132 /* get device 802.11 capabilities, number of PMKIDs */
3133 len = sizeof(caps);
3134 retval = rndis_query_oid(usbdev,
3135 RNDIS_OID_802_11_CAPABILITY,
3136 &caps, &len);
3137 if (!retval) {
3138 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3139 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3140 le32_to_cpu(caps.length),
3141 le32_to_cpu(caps.version),
3142 le32_to_cpu(caps.num_pmkids),
3143 le32_to_cpu(caps.num_auth_encr_pair));
3144 wiphy->max_num_pmkids = le32_to_cpu(caps.num_pmkids);
3145 } else
3146 wiphy->max_num_pmkids = 0;
3147
3148 return retval;
3149}
3150
3151static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3152{
3153 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3154 enum nl80211_cqm_rssi_threshold_event event;
3155 int thold, hyst, last_event;
3156
3157 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3158 return;
3159 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3160 return;
3161
3162 last_event = priv->last_cqm_event_rssi;
3163 thold = priv->cqm_rssi_thold;
3164 hyst = priv->cqm_rssi_hyst;
3165
3166 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3167 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3168 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3169 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3170 else
3171 return;
3172
3173 priv->last_cqm_event_rssi = rssi;
3174 cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3175}
3176
3177#define DEVICE_POLLER_JIFFIES (HZ)
3178static void rndis_device_poller(struct work_struct *work)
3179{
3180 struct rndis_wlan_private *priv =
3181 container_of(work, struct rndis_wlan_private,
3182 dev_poller_work.work);
3183 struct usbnet *usbdev = priv->usbdev;
3184 __le32 rssi, tmp;
3185 int len, ret, j;
3186 int update_jiffies = DEVICE_POLLER_JIFFIES;
3187 void *buf;
3188
3189 /* Only check/do workaround when connected. Calling is_associated()
3190 * also polls device with rndis_command() and catches for media link
3191 * indications.
3192 */
3193 if (!is_associated(usbdev)) {
3194 /* Workaround bad scanning in BCM4320a devices with active
3195 * background scanning when not associated.
3196 */
3197 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3198 !priv->scan_request) {
3199 /* Get previous scan results */
3200 rndis_check_bssid_list(usbdev, NULL, NULL);
3201
3202 /* Initiate new scan */
3203 rndis_start_bssid_list_scan(usbdev);
3204 }
3205
3206 goto end;
3207 }
3208
3209 len = sizeof(rssi);
3210 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3211 &rssi, &len);
3212 if (ret == 0) {
3213 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3214 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3215 }
3216
3217 netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3218 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3219
3220 /* Workaround transfer stalls on poor quality links.
3221 * TODO: find right way to fix these stalls (as stalls do not happen
3222 * with ndiswrapper/windows driver). */
3223 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3224 /* Decrease stats worker interval to catch stalls.
3225 * faster. Faster than 400-500ms causes packet loss,
3226 * Slower doesn't catch stalls fast enough.
3227 */
3228 j = msecs_to_jiffies(priv->param_workaround_interval);
3229 if (j > DEVICE_POLLER_JIFFIES)
3230 j = DEVICE_POLLER_JIFFIES;
3231 else if (j <= 0)
3232 j = 1;
3233 update_jiffies = j;
3234
3235 /* Send scan OID. Use of both OIDs is required to get device
3236 * working.
3237 */
3238 tmp = cpu_to_le32(1);
3239 rndis_set_oid(usbdev,
3240 RNDIS_OID_802_11_BSSID_LIST_SCAN,
3241 &tmp, sizeof(tmp));
3242
3243 len = CONTROL_BUFFER_SIZE;
3244 buf = kmalloc(len, GFP_KERNEL);
3245 if (!buf)
3246 goto end;
3247
3248 rndis_query_oid(usbdev,
3249 RNDIS_OID_802_11_BSSID_LIST,
3250 buf, &len);
3251 kfree(buf);
3252 }
3253
3254end:
3255 if (update_jiffies >= HZ)
3256 update_jiffies = round_jiffies_relative(update_jiffies);
3257 else {
3258 j = round_jiffies_relative(update_jiffies);
3259 if (abs(j - update_jiffies) <= 10)
3260 update_jiffies = j;
3261 }
3262
3263 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3264 update_jiffies);
3265}
3266
3267/*
3268 * driver/device initialization
3269 */
3270static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3271{
3272 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3273
3274 priv->device_type = device_type;
3275
3276 priv->param_country[0] = modparam_country[0];
3277 priv->param_country[1] = modparam_country[1];
3278 priv->param_country[2] = 0;
3279 priv->param_frameburst = modparam_frameburst;
3280 priv->param_afterburner = modparam_afterburner;
3281 priv->param_power_save = modparam_power_save;
3282 priv->param_power_output = modparam_power_output;
3283 priv->param_roamtrigger = modparam_roamtrigger;
3284 priv->param_roamdelta = modparam_roamdelta;
3285
3286 priv->param_country[0] = toupper(priv->param_country[0]);
3287 priv->param_country[1] = toupper(priv->param_country[1]);
3288 /* doesn't support EU as country code, use FI instead */
3289 if (!strcmp(priv->param_country, "EU"))
3290 strcpy(priv->param_country, "FI");
3291
3292 if (priv->param_power_save < 0)
3293 priv->param_power_save = 0;
3294 else if (priv->param_power_save > 2)
3295 priv->param_power_save = 2;
3296
3297 if (priv->param_power_output < 0)
3298 priv->param_power_output = 0;
3299 else if (priv->param_power_output > 3)
3300 priv->param_power_output = 3;
3301
3302 if (priv->param_roamtrigger < -80)
3303 priv->param_roamtrigger = -80;
3304 else if (priv->param_roamtrigger > -60)
3305 priv->param_roamtrigger = -60;
3306
3307 if (priv->param_roamdelta < 0)
3308 priv->param_roamdelta = 0;
3309 else if (priv->param_roamdelta > 2)
3310 priv->param_roamdelta = 2;
3311
3312 if (modparam_workaround_interval < 0)
3313 priv->param_workaround_interval = 500;
3314 else
3315 priv->param_workaround_interval = modparam_workaround_interval;
3316}
3317
3318static int unknown_early_init(struct usbnet *usbdev)
3319{
3320 /* copy module parameters for unknown so that iwconfig reports txpower
3321 * and workaround parameter is copied to private structure correctly.
3322 */
3323 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3324
3325 /* This is unknown device, so do not try set configuration parameters.
3326 */
3327
3328 return 0;
3329}
3330
3331static int bcm4320a_early_init(struct usbnet *usbdev)
3332{
3333 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3334 * and workaround parameter is copied to private structure correctly.
3335 */
3336 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3337
3338 /* bcm4320a doesn't handle configuration parameters well. Try
3339 * set any and you get partially zeroed mac and broken device.
3340 */
3341
3342 return 0;
3343}
3344
3345static int bcm4320b_early_init(struct usbnet *usbdev)
3346{
3347 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3348 char buf[8];
3349
3350 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3351
3352 /* Early initialization settings, setting these won't have effect
3353 * if called after generic_rndis_bind().
3354 */
3355
3356 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3357 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3358 priv->param_frameburst ? "1" : "0");
3359 rndis_set_config_parameter_str(usbdev, "Afterburner",
3360 priv->param_afterburner ? "1" : "0");
3361 sprintf(buf, "%d", priv->param_power_save);
3362 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3363 sprintf(buf, "%d", priv->param_power_output);
3364 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3365 sprintf(buf, "%d", priv->param_roamtrigger);
3366 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3367 sprintf(buf, "%d", priv->param_roamdelta);
3368 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3369
3370 return 0;
3371}
3372
3373/* same as rndis_netdev_ops but with local multicast handler */
3374static const struct net_device_ops rndis_wlan_netdev_ops = {
3375 .ndo_open = usbnet_open,
3376 .ndo_stop = usbnet_stop,
3377 .ndo_start_xmit = usbnet_start_xmit,
3378 .ndo_tx_timeout = usbnet_tx_timeout,
3379 .ndo_get_stats64 = dev_get_tstats64,
3380 .ndo_set_mac_address = eth_mac_addr,
3381 .ndo_validate_addr = eth_validate_addr,
3382 .ndo_set_rx_mode = rndis_wlan_set_multicast_list,
3383};
3384
3385static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3386{
3387 struct wiphy *wiphy;
3388 struct rndis_wlan_private *priv;
3389 int retval, len;
3390 __le32 tmp;
3391
3392 /* allocate wiphy and rndis private data
3393 * NOTE: We only support a single virtual interface, so wiphy
3394 * and wireless_dev are somewhat synonymous for this device.
3395 */
3396 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3397 if (!wiphy)
3398 return -ENOMEM;
3399
3400 priv = wiphy_priv(wiphy);
3401 usbdev->net->ieee80211_ptr = &priv->wdev;
3402 priv->wdev.wiphy = wiphy;
3403 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3404
3405 /* These have to be initialized before calling generic_rndis_bind().
3406 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3407 */
3408 usbdev->driver_priv = priv;
3409 priv->usbdev = usbdev;
3410
3411 mutex_init(&priv->command_lock);
3412
3413 /* because rndis_command() sleeps we need to use workqueue */
3414 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3415 if (!priv->workqueue) {
3416 wiphy_free(wiphy);
3417 return -ENOMEM;
3418 }
3419 INIT_WORK(&priv->work, rndis_wlan_worker);
3420 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3421 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3422
3423 /* try bind rndis_host */
3424 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3425 if (retval < 0)
3426 goto fail;
3427
3428 /* generic_rndis_bind set packet filter to multicast_all+
3429 * promisc mode which doesn't work well for our devices (device
3430 * picks up rssi to closest station instead of to access point).
3431 *
3432 * rndis_host wants to avoid all OID as much as possible
3433 * so do promisc/multicast handling in rndis_wlan.
3434 */
3435 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3436
3437 tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3438 retval = rndis_set_oid(usbdev,
3439 RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3440 &tmp, sizeof(tmp));
3441
3442 len = sizeof(tmp);
3443 retval = rndis_query_oid(usbdev,
3444 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3445 &tmp, &len);
3446 priv->multicast_size = le32_to_cpu(tmp);
3447 if (retval < 0 || priv->multicast_size < 0)
3448 priv->multicast_size = 0;
3449 if (priv->multicast_size > 0)
3450 usbdev->net->flags |= IFF_MULTICAST;
3451 else
3452 usbdev->net->flags &= ~IFF_MULTICAST;
3453
3454 /* fill-out wiphy structure and register w/ cfg80211 */
3455 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3456 wiphy->privid = rndis_wiphy_privid;
3457 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3458 | BIT(NL80211_IFTYPE_ADHOC);
3459 wiphy->max_scan_ssids = 1;
3460
3461 /* TODO: fill-out band/encr information based on priv->caps */
3462 rndis_wlan_get_caps(usbdev, wiphy);
3463
3464 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3465 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3466 priv->band.channels = priv->channels;
3467 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3468 priv->band.bitrates = priv->rates;
3469 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3470 wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3471 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3472
3473 memcpy(priv->cipher_suites, rndis_cipher_suites,
3474 sizeof(rndis_cipher_suites));
3475 wiphy->cipher_suites = priv->cipher_suites;
3476 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3477
3478 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3479
3480 if (wiphy_register(wiphy)) {
3481 retval = -ENODEV;
3482 goto fail;
3483 }
3484
3485 set_default_iw_params(usbdev);
3486
3487 priv->power_mode = -1;
3488
3489 /* set default rts/frag */
3490 rndis_set_wiphy_params(wiphy,
3491 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3492
3493 /* turn radio off on init */
3494 priv->radio_on = false;
3495 disassociate(usbdev, false);
3496 netif_carrier_off(usbdev->net);
3497
3498 return 0;
3499
3500fail:
3501 cancel_delayed_work_sync(&priv->dev_poller_work);
3502 cancel_delayed_work_sync(&priv->scan_work);
3503 cancel_work_sync(&priv->work);
3504 flush_workqueue(priv->workqueue);
3505 destroy_workqueue(priv->workqueue);
3506
3507 wiphy_free(wiphy);
3508 return retval;
3509}
3510
3511static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3512{
3513 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3514
3515 /* turn radio off */
3516 disassociate(usbdev, false);
3517
3518 cancel_delayed_work_sync(&priv->dev_poller_work);
3519 cancel_delayed_work_sync(&priv->scan_work);
3520 cancel_work_sync(&priv->work);
3521 flush_workqueue(priv->workqueue);
3522 destroy_workqueue(priv->workqueue);
3523
3524 rndis_unbind(usbdev, intf);
3525
3526 wiphy_unregister(priv->wdev.wiphy);
3527 wiphy_free(priv->wdev.wiphy);
3528}
3529
3530static int rndis_wlan_reset(struct usbnet *usbdev)
3531{
3532 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3533 int retval;
3534
3535 netdev_dbg(usbdev->net, "%s()\n", __func__);
3536
3537 retval = rndis_reset(usbdev);
3538 if (retval)
3539 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3540
3541 /* rndis_reset cleared multicast list, so restore here.
3542 (set_multicast_list() also turns on current packet filter) */
3543 set_multicast_list(usbdev);
3544
3545 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3546 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3547
3548 return deauthenticate(usbdev);
3549}
3550
3551static int rndis_wlan_stop(struct usbnet *usbdev)
3552{
3553 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3554 int retval;
3555 __le32 filter;
3556
3557 netdev_dbg(usbdev->net, "%s()\n", __func__);
3558
3559 retval = disassociate(usbdev, false);
3560
3561 priv->work_pending = 0;
3562 cancel_delayed_work_sync(&priv->dev_poller_work);
3563 cancel_delayed_work_sync(&priv->scan_work);
3564 cancel_work_sync(&priv->work);
3565 flush_workqueue(priv->workqueue);
3566
3567 if (priv->scan_request) {
3568 struct cfg80211_scan_info info = {
3569 .aborted = true,
3570 };
3571
3572 cfg80211_scan_done(priv->scan_request, &info);
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