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1/*
2 * Driver for RNDIS based wireless USB devices.
3 *
4 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
5 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 * Portions of this file are based on NDISwrapper project,
22 * Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
23 * http://ndiswrapper.sourceforge.net/
24 */
25
26// #define DEBUG // error path messages, extra info
27// #define VERBOSE // more; success messages
28
29#include <linux/module.h>
30#include <linux/init.h>
31#include <linux/netdevice.h>
32#include <linux/etherdevice.h>
33#include <linux/ethtool.h>
34#include <linux/workqueue.h>
35#include <linux/mutex.h>
36#include <linux/mii.h>
37#include <linux/usb.h>
38#include <linux/usb/cdc.h>
39#include <linux/wireless.h>
40#include <linux/ieee80211.h>
41#include <linux/if_arp.h>
42#include <linux/ctype.h>
43#include <linux/spinlock.h>
44#include <linux/slab.h>
45#include <net/iw_handler.h>
46#include <net/cfg80211.h>
47#include <linux/usb/usbnet.h>
48#include <linux/usb/rndis_host.h>
49
50
51/* NOTE: All these are settings for Broadcom chipset */
52static char modparam_country[4] = "EU";
53module_param_string(country, modparam_country, 4, 0444);
54MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
55
56static int modparam_frameburst = 1;
57module_param_named(frameburst, modparam_frameburst, int, 0444);
58MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
59
60static int modparam_afterburner = 0;
61module_param_named(afterburner, modparam_afterburner, int, 0444);
62MODULE_PARM_DESC(afterburner,
63 "enable afterburner aka '125 High Speed Mode' (default: off)");
64
65static int modparam_power_save = 0;
66module_param_named(power_save, modparam_power_save, int, 0444);
67MODULE_PARM_DESC(power_save,
68 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
69
70static int modparam_power_output = 3;
71module_param_named(power_output, modparam_power_output, int, 0444);
72MODULE_PARM_DESC(power_output,
73 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
74
75static int modparam_roamtrigger = -70;
76module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
77MODULE_PARM_DESC(roamtrigger,
78 "set roaming dBm trigger: -80=optimize for distance, "
79 "-60=bandwidth (default: -70)");
80
81static int modparam_roamdelta = 1;
82module_param_named(roamdelta, modparam_roamdelta, int, 0444);
83MODULE_PARM_DESC(roamdelta,
84 "set roaming tendency: 0=aggressive, 1=moderate, "
85 "2=conservative (default: moderate)");
86
87static int modparam_workaround_interval;
88module_param_named(workaround_interval, modparam_workaround_interval,
89 int, 0444);
90MODULE_PARM_DESC(workaround_interval,
91 "set stall workaround interval in msecs (0=disabled) (default: 0)");
92
93
94/* various RNDIS OID defs */
95#define OID_GEN_LINK_SPEED cpu_to_le32(0x00010107)
96#define OID_GEN_RNDIS_CONFIG_PARAMETER cpu_to_le32(0x0001021b)
97
98#define OID_GEN_XMIT_OK cpu_to_le32(0x00020101)
99#define OID_GEN_RCV_OK cpu_to_le32(0x00020102)
100#define OID_GEN_XMIT_ERROR cpu_to_le32(0x00020103)
101#define OID_GEN_RCV_ERROR cpu_to_le32(0x00020104)
102#define OID_GEN_RCV_NO_BUFFER cpu_to_le32(0x00020105)
103
104#define OID_802_3_CURRENT_ADDRESS cpu_to_le32(0x01010102)
105#define OID_802_3_MULTICAST_LIST cpu_to_le32(0x01010103)
106#define OID_802_3_MAXIMUM_LIST_SIZE cpu_to_le32(0x01010104)
107
108#define OID_802_11_BSSID cpu_to_le32(0x0d010101)
109#define OID_802_11_SSID cpu_to_le32(0x0d010102)
110#define OID_802_11_INFRASTRUCTURE_MODE cpu_to_le32(0x0d010108)
111#define OID_802_11_ADD_WEP cpu_to_le32(0x0d010113)
112#define OID_802_11_REMOVE_WEP cpu_to_le32(0x0d010114)
113#define OID_802_11_DISASSOCIATE cpu_to_le32(0x0d010115)
114#define OID_802_11_AUTHENTICATION_MODE cpu_to_le32(0x0d010118)
115#define OID_802_11_PRIVACY_FILTER cpu_to_le32(0x0d010119)
116#define OID_802_11_BSSID_LIST_SCAN cpu_to_le32(0x0d01011a)
117#define OID_802_11_ENCRYPTION_STATUS cpu_to_le32(0x0d01011b)
118#define OID_802_11_ADD_KEY cpu_to_le32(0x0d01011d)
119#define OID_802_11_REMOVE_KEY cpu_to_le32(0x0d01011e)
120#define OID_802_11_ASSOCIATION_INFORMATION cpu_to_le32(0x0d01011f)
121#define OID_802_11_CAPABILITY cpu_to_le32(0x0d010122)
122#define OID_802_11_PMKID cpu_to_le32(0x0d010123)
123#define OID_802_11_NETWORK_TYPES_SUPPORTED cpu_to_le32(0x0d010203)
124#define OID_802_11_NETWORK_TYPE_IN_USE cpu_to_le32(0x0d010204)
125#define OID_802_11_TX_POWER_LEVEL cpu_to_le32(0x0d010205)
126#define OID_802_11_RSSI cpu_to_le32(0x0d010206)
127#define OID_802_11_RSSI_TRIGGER cpu_to_le32(0x0d010207)
128#define OID_802_11_FRAGMENTATION_THRESHOLD cpu_to_le32(0x0d010209)
129#define OID_802_11_RTS_THRESHOLD cpu_to_le32(0x0d01020a)
130#define OID_802_11_SUPPORTED_RATES cpu_to_le32(0x0d01020e)
131#define OID_802_11_CONFIGURATION cpu_to_le32(0x0d010211)
132#define OID_802_11_POWER_MODE cpu_to_le32(0x0d010216)
133#define OID_802_11_BSSID_LIST cpu_to_le32(0x0d010217)
134
135
136/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
137#define WL_NOISE -96 /* typical noise level in dBm */
138#define WL_SIGMAX -32 /* typical maximum signal level in dBm */
139
140
141/* Assume that Broadcom 4320 (only chipset at time of writing known to be
142 * based on wireless rndis) has default txpower of 13dBm.
143 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
144 * 100% : 20 mW ~ 13dBm
145 * 75% : 15 mW ~ 12dBm
146 * 50% : 10 mW ~ 10dBm
147 * 25% : 5 mW ~ 7dBm
148 */
149#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
150#define BCM4320_DEFAULT_TXPOWER_DBM_75 12
151#define BCM4320_DEFAULT_TXPOWER_DBM_50 10
152#define BCM4320_DEFAULT_TXPOWER_DBM_25 7
153
154
155/* codes for "status" field of completion messages */
156#define RNDIS_STATUS_ADAPTER_NOT_READY cpu_to_le32(0xc0010011)
157#define RNDIS_STATUS_ADAPTER_NOT_OPEN cpu_to_le32(0xc0010012)
158
159
160/* Known device types */
161#define RNDIS_UNKNOWN 0
162#define RNDIS_BCM4320A 1
163#define RNDIS_BCM4320B 2
164
165
166/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
167 * slightly modified for datatype endianess, etc
168 */
169#define NDIS_802_11_LENGTH_SSID 32
170#define NDIS_802_11_LENGTH_RATES 8
171#define NDIS_802_11_LENGTH_RATES_EX 16
172
173enum ndis_80211_net_type {
174 NDIS_80211_TYPE_FREQ_HOP,
175 NDIS_80211_TYPE_DIRECT_SEQ,
176 NDIS_80211_TYPE_OFDM_A,
177 NDIS_80211_TYPE_OFDM_G
178};
179
180enum ndis_80211_net_infra {
181 NDIS_80211_INFRA_ADHOC,
182 NDIS_80211_INFRA_INFRA,
183 NDIS_80211_INFRA_AUTO_UNKNOWN
184};
185
186enum ndis_80211_auth_mode {
187 NDIS_80211_AUTH_OPEN,
188 NDIS_80211_AUTH_SHARED,
189 NDIS_80211_AUTH_AUTO_SWITCH,
190 NDIS_80211_AUTH_WPA,
191 NDIS_80211_AUTH_WPA_PSK,
192 NDIS_80211_AUTH_WPA_NONE,
193 NDIS_80211_AUTH_WPA2,
194 NDIS_80211_AUTH_WPA2_PSK
195};
196
197enum ndis_80211_encr_status {
198 NDIS_80211_ENCR_WEP_ENABLED,
199 NDIS_80211_ENCR_DISABLED,
200 NDIS_80211_ENCR_WEP_KEY_ABSENT,
201 NDIS_80211_ENCR_NOT_SUPPORTED,
202 NDIS_80211_ENCR_TKIP_ENABLED,
203 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
204 NDIS_80211_ENCR_CCMP_ENABLED,
205 NDIS_80211_ENCR_CCMP_KEY_ABSENT
206};
207
208enum ndis_80211_priv_filter {
209 NDIS_80211_PRIV_ACCEPT_ALL,
210 NDIS_80211_PRIV_8021X_WEP
211};
212
213enum ndis_80211_status_type {
214 NDIS_80211_STATUSTYPE_AUTHENTICATION,
215 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
216 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
217 NDIS_80211_STATUSTYPE_RADIOSTATE,
218};
219
220enum ndis_80211_media_stream_mode {
221 NDIS_80211_MEDIA_STREAM_OFF,
222 NDIS_80211_MEDIA_STREAM_ON
223};
224
225enum ndis_80211_radio_status {
226 NDIS_80211_RADIO_STATUS_ON,
227 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
228 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
229};
230
231enum ndis_80211_addkey_bits {
232 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
233 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
234 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
235 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
236};
237
238enum ndis_80211_addwep_bits {
239 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
240 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
241};
242
243enum ndis_80211_power_mode {
244 NDIS_80211_POWER_MODE_CAM,
245 NDIS_80211_POWER_MODE_MAX_PSP,
246 NDIS_80211_POWER_MODE_FAST_PSP,
247};
248
249struct ndis_80211_auth_request {
250 __le32 length;
251 u8 bssid[6];
252 u8 padding[2];
253 __le32 flags;
254} __packed;
255
256struct ndis_80211_pmkid_candidate {
257 u8 bssid[6];
258 u8 padding[2];
259 __le32 flags;
260} __packed;
261
262struct ndis_80211_pmkid_cand_list {
263 __le32 version;
264 __le32 num_candidates;
265 struct ndis_80211_pmkid_candidate candidate_list[0];
266} __packed;
267
268struct ndis_80211_status_indication {
269 __le32 status_type;
270 union {
271 __le32 media_stream_mode;
272 __le32 radio_status;
273 struct ndis_80211_auth_request auth_request[0];
274 struct ndis_80211_pmkid_cand_list cand_list;
275 } u;
276} __packed;
277
278struct ndis_80211_ssid {
279 __le32 length;
280 u8 essid[NDIS_802_11_LENGTH_SSID];
281} __packed;
282
283struct ndis_80211_conf_freq_hop {
284 __le32 length;
285 __le32 hop_pattern;
286 __le32 hop_set;
287 __le32 dwell_time;
288} __packed;
289
290struct ndis_80211_conf {
291 __le32 length;
292 __le32 beacon_period;
293 __le32 atim_window;
294 __le32 ds_config;
295 struct ndis_80211_conf_freq_hop fh_config;
296} __packed;
297
298struct ndis_80211_bssid_ex {
299 __le32 length;
300 u8 mac[6];
301 u8 padding[2];
302 struct ndis_80211_ssid ssid;
303 __le32 privacy;
304 __le32 rssi;
305 __le32 net_type;
306 struct ndis_80211_conf config;
307 __le32 net_infra;
308 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
309 __le32 ie_length;
310 u8 ies[0];
311} __packed;
312
313struct ndis_80211_bssid_list_ex {
314 __le32 num_items;
315 struct ndis_80211_bssid_ex bssid[0];
316} __packed;
317
318struct ndis_80211_fixed_ies {
319 u8 timestamp[8];
320 __le16 beacon_interval;
321 __le16 capabilities;
322} __packed;
323
324struct ndis_80211_wep_key {
325 __le32 size;
326 __le32 index;
327 __le32 length;
328 u8 material[32];
329} __packed;
330
331struct ndis_80211_key {
332 __le32 size;
333 __le32 index;
334 __le32 length;
335 u8 bssid[6];
336 u8 padding[6];
337 u8 rsc[8];
338 u8 material[32];
339} __packed;
340
341struct ndis_80211_remove_key {
342 __le32 size;
343 __le32 index;
344 u8 bssid[6];
345 u8 padding[2];
346} __packed;
347
348struct ndis_config_param {
349 __le32 name_offs;
350 __le32 name_length;
351 __le32 type;
352 __le32 value_offs;
353 __le32 value_length;
354} __packed;
355
356struct ndis_80211_assoc_info {
357 __le32 length;
358 __le16 req_ies;
359 struct req_ie {
360 __le16 capa;
361 __le16 listen_interval;
362 u8 cur_ap_address[6];
363 } req_ie;
364 __le32 req_ie_length;
365 __le32 offset_req_ies;
366 __le16 resp_ies;
367 struct resp_ie {
368 __le16 capa;
369 __le16 status_code;
370 __le16 assoc_id;
371 } resp_ie;
372 __le32 resp_ie_length;
373 __le32 offset_resp_ies;
374} __packed;
375
376struct ndis_80211_auth_encr_pair {
377 __le32 auth_mode;
378 __le32 encr_mode;
379} __packed;
380
381struct ndis_80211_capability {
382 __le32 length;
383 __le32 version;
384 __le32 num_pmkids;
385 __le32 num_auth_encr_pair;
386 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
387} __packed;
388
389struct ndis_80211_bssid_info {
390 u8 bssid[6];
391 u8 pmkid[16];
392};
393
394struct ndis_80211_pmkid {
395 __le32 length;
396 __le32 bssid_info_count;
397 struct ndis_80211_bssid_info bssid_info[0];
398};
399
400/*
401 * private data
402 */
403#define NET_TYPE_11FB 0
404
405#define CAP_MODE_80211A 1
406#define CAP_MODE_80211B 2
407#define CAP_MODE_80211G 4
408#define CAP_MODE_MASK 7
409
410#define WORK_LINK_UP (1<<0)
411#define WORK_LINK_DOWN (1<<1)
412#define WORK_SET_MULTICAST_LIST (1<<2)
413
414#define RNDIS_WLAN_ALG_NONE 0
415#define RNDIS_WLAN_ALG_WEP (1<<0)
416#define RNDIS_WLAN_ALG_TKIP (1<<1)
417#define RNDIS_WLAN_ALG_CCMP (1<<2)
418
419#define RNDIS_WLAN_KEY_MGMT_NONE 0
420#define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
421#define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
422
423#define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
424
425static const struct ieee80211_channel rndis_channels[] = {
426 { .center_freq = 2412 },
427 { .center_freq = 2417 },
428 { .center_freq = 2422 },
429 { .center_freq = 2427 },
430 { .center_freq = 2432 },
431 { .center_freq = 2437 },
432 { .center_freq = 2442 },
433 { .center_freq = 2447 },
434 { .center_freq = 2452 },
435 { .center_freq = 2457 },
436 { .center_freq = 2462 },
437 { .center_freq = 2467 },
438 { .center_freq = 2472 },
439 { .center_freq = 2484 },
440};
441
442static const struct ieee80211_rate rndis_rates[] = {
443 { .bitrate = 10 },
444 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
445 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
446 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
447 { .bitrate = 60 },
448 { .bitrate = 90 },
449 { .bitrate = 120 },
450 { .bitrate = 180 },
451 { .bitrate = 240 },
452 { .bitrate = 360 },
453 { .bitrate = 480 },
454 { .bitrate = 540 }
455};
456
457static const u32 rndis_cipher_suites[] = {
458 WLAN_CIPHER_SUITE_WEP40,
459 WLAN_CIPHER_SUITE_WEP104,
460 WLAN_CIPHER_SUITE_TKIP,
461 WLAN_CIPHER_SUITE_CCMP,
462};
463
464struct rndis_wlan_encr_key {
465 int len;
466 u32 cipher;
467 u8 material[32];
468 u8 bssid[ETH_ALEN];
469 bool pairwise;
470 bool tx_key;
471};
472
473/* RNDIS device private data */
474struct rndis_wlan_private {
475 struct usbnet *usbdev;
476
477 struct wireless_dev wdev;
478
479 struct cfg80211_scan_request *scan_request;
480
481 struct workqueue_struct *workqueue;
482 struct delayed_work dev_poller_work;
483 struct delayed_work scan_work;
484 struct work_struct work;
485 struct mutex command_lock;
486 unsigned long work_pending;
487 int last_qual;
488 s32 cqm_rssi_thold;
489 u32 cqm_rssi_hyst;
490 int last_cqm_event_rssi;
491
492 struct ieee80211_supported_band band;
493 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
494 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
495 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
496
497 int device_type;
498 int caps;
499 int multicast_size;
500
501 /* module parameters */
502 char param_country[4];
503 int param_frameburst;
504 int param_afterburner;
505 int param_power_save;
506 int param_power_output;
507 int param_roamtrigger;
508 int param_roamdelta;
509 u32 param_workaround_interval;
510
511 /* hardware state */
512 bool radio_on;
513 int power_mode;
514 int infra_mode;
515 bool connected;
516 u8 bssid[ETH_ALEN];
517 __le32 current_command_oid;
518
519 /* encryption stuff */
520 int encr_tx_key_index;
521 struct rndis_wlan_encr_key encr_keys[4];
522 int wpa_version;
523
524 u8 command_buffer[COMMAND_BUFFER_SIZE];
525};
526
527/*
528 * cfg80211 ops
529 */
530static int rndis_change_virtual_intf(struct wiphy *wiphy,
531 struct net_device *dev,
532 enum nl80211_iftype type, u32 *flags,
533 struct vif_params *params);
534
535static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
536 struct cfg80211_scan_request *request);
537
538static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
539
540static int rndis_set_tx_power(struct wiphy *wiphy,
541 enum nl80211_tx_power_setting type,
542 int mbm);
543static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
544
545static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
546 struct cfg80211_connect_params *sme);
547
548static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
549 u16 reason_code);
550
551static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
552 struct cfg80211_ibss_params *params);
553
554static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
555
556static int rndis_set_channel(struct wiphy *wiphy, struct net_device *dev,
557 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
558
559static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
560 u8 key_index, bool pairwise, const u8 *mac_addr,
561 struct key_params *params);
562
563static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
564 u8 key_index, bool pairwise, const u8 *mac_addr);
565
566static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
567 u8 key_index, bool unicast, bool multicast);
568
569static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
570 u8 *mac, struct station_info *sinfo);
571
572static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
573 int idx, u8 *mac, struct station_info *sinfo);
574
575static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
576 struct cfg80211_pmksa *pmksa);
577
578static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
579 struct cfg80211_pmksa *pmksa);
580
581static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
582
583static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
584 bool enabled, int timeout);
585
586static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
587 struct net_device *dev,
588 s32 rssi_thold, u32 rssi_hyst);
589
590static const struct cfg80211_ops rndis_config_ops = {
591 .change_virtual_intf = rndis_change_virtual_intf,
592 .scan = rndis_scan,
593 .set_wiphy_params = rndis_set_wiphy_params,
594 .set_tx_power = rndis_set_tx_power,
595 .get_tx_power = rndis_get_tx_power,
596 .connect = rndis_connect,
597 .disconnect = rndis_disconnect,
598 .join_ibss = rndis_join_ibss,
599 .leave_ibss = rndis_leave_ibss,
600 .set_channel = rndis_set_channel,
601 .add_key = rndis_add_key,
602 .del_key = rndis_del_key,
603 .set_default_key = rndis_set_default_key,
604 .get_station = rndis_get_station,
605 .dump_station = rndis_dump_station,
606 .set_pmksa = rndis_set_pmksa,
607 .del_pmksa = rndis_del_pmksa,
608 .flush_pmksa = rndis_flush_pmksa,
609 .set_power_mgmt = rndis_set_power_mgmt,
610 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
611};
612
613static void *rndis_wiphy_privid = &rndis_wiphy_privid;
614
615
616static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
617{
618 return (struct rndis_wlan_private *)dev->driver_priv;
619}
620
621static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
622{
623 switch (priv->param_power_output) {
624 default:
625 case 3:
626 return BCM4320_DEFAULT_TXPOWER_DBM_100;
627 case 2:
628 return BCM4320_DEFAULT_TXPOWER_DBM_75;
629 case 1:
630 return BCM4320_DEFAULT_TXPOWER_DBM_50;
631 case 0:
632 return BCM4320_DEFAULT_TXPOWER_DBM_25;
633 }
634}
635
636static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
637{
638 int cipher = priv->encr_keys[idx].cipher;
639
640 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
641 cipher == WLAN_CIPHER_SUITE_TKIP);
642}
643
644static int rndis_cipher_to_alg(u32 cipher)
645{
646 switch (cipher) {
647 default:
648 return RNDIS_WLAN_ALG_NONE;
649 case WLAN_CIPHER_SUITE_WEP40:
650 case WLAN_CIPHER_SUITE_WEP104:
651 return RNDIS_WLAN_ALG_WEP;
652 case WLAN_CIPHER_SUITE_TKIP:
653 return RNDIS_WLAN_ALG_TKIP;
654 case WLAN_CIPHER_SUITE_CCMP:
655 return RNDIS_WLAN_ALG_CCMP;
656 }
657}
658
659static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
660{
661 switch (akm_suite) {
662 default:
663 return RNDIS_WLAN_KEY_MGMT_NONE;
664 case WLAN_AKM_SUITE_8021X:
665 return RNDIS_WLAN_KEY_MGMT_802_1X;
666 case WLAN_AKM_SUITE_PSK:
667 return RNDIS_WLAN_KEY_MGMT_PSK;
668 }
669}
670
671#ifdef DEBUG
672static const char *oid_to_string(__le32 oid)
673{
674 switch (oid) {
675#define OID_STR(oid) case oid: return(#oid)
676 /* from rndis_host.h */
677 OID_STR(OID_802_3_PERMANENT_ADDRESS);
678 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
679 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
680 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
681
682 /* from rndis_wlan.c */
683 OID_STR(OID_GEN_LINK_SPEED);
684 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
685
686 OID_STR(OID_GEN_XMIT_OK);
687 OID_STR(OID_GEN_RCV_OK);
688 OID_STR(OID_GEN_XMIT_ERROR);
689 OID_STR(OID_GEN_RCV_ERROR);
690 OID_STR(OID_GEN_RCV_NO_BUFFER);
691
692 OID_STR(OID_802_3_CURRENT_ADDRESS);
693 OID_STR(OID_802_3_MULTICAST_LIST);
694 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
695
696 OID_STR(OID_802_11_BSSID);
697 OID_STR(OID_802_11_SSID);
698 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
699 OID_STR(OID_802_11_ADD_WEP);
700 OID_STR(OID_802_11_REMOVE_WEP);
701 OID_STR(OID_802_11_DISASSOCIATE);
702 OID_STR(OID_802_11_AUTHENTICATION_MODE);
703 OID_STR(OID_802_11_PRIVACY_FILTER);
704 OID_STR(OID_802_11_BSSID_LIST_SCAN);
705 OID_STR(OID_802_11_ENCRYPTION_STATUS);
706 OID_STR(OID_802_11_ADD_KEY);
707 OID_STR(OID_802_11_REMOVE_KEY);
708 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
709 OID_STR(OID_802_11_CAPABILITY);
710 OID_STR(OID_802_11_PMKID);
711 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
712 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
713 OID_STR(OID_802_11_TX_POWER_LEVEL);
714 OID_STR(OID_802_11_RSSI);
715 OID_STR(OID_802_11_RSSI_TRIGGER);
716 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
717 OID_STR(OID_802_11_RTS_THRESHOLD);
718 OID_STR(OID_802_11_SUPPORTED_RATES);
719 OID_STR(OID_802_11_CONFIGURATION);
720 OID_STR(OID_802_11_POWER_MODE);
721 OID_STR(OID_802_11_BSSID_LIST);
722#undef OID_STR
723 }
724
725 return "?";
726}
727#else
728static const char *oid_to_string(__le32 oid)
729{
730 return "?";
731}
732#endif
733
734/* translate error code */
735static int rndis_error_status(__le32 rndis_status)
736{
737 int ret = -EINVAL;
738 switch (rndis_status) {
739 case RNDIS_STATUS_SUCCESS:
740 ret = 0;
741 break;
742 case RNDIS_STATUS_FAILURE:
743 case RNDIS_STATUS_INVALID_DATA:
744 ret = -EINVAL;
745 break;
746 case RNDIS_STATUS_NOT_SUPPORTED:
747 ret = -EOPNOTSUPP;
748 break;
749 case RNDIS_STATUS_ADAPTER_NOT_READY:
750 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
751 ret = -EBUSY;
752 break;
753 }
754 return ret;
755}
756
757static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
758{
759 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
760 union {
761 void *buf;
762 struct rndis_msg_hdr *header;
763 struct rndis_query *get;
764 struct rndis_query_c *get_c;
765 } u;
766 int ret, buflen;
767 int resplen, respoffs, copylen;
768
769 buflen = *len + sizeof(*u.get);
770 if (buflen < CONTROL_BUFFER_SIZE)
771 buflen = CONTROL_BUFFER_SIZE;
772
773 if (buflen > COMMAND_BUFFER_SIZE) {
774 u.buf = kmalloc(buflen, GFP_KERNEL);
775 if (!u.buf)
776 return -ENOMEM;
777 } else {
778 u.buf = priv->command_buffer;
779 }
780
781 mutex_lock(&priv->command_lock);
782
783 memset(u.get, 0, sizeof *u.get);
784 u.get->msg_type = RNDIS_MSG_QUERY;
785 u.get->msg_len = cpu_to_le32(sizeof *u.get);
786 u.get->oid = oid;
787
788 priv->current_command_oid = oid;
789 ret = rndis_command(dev, u.header, buflen);
790 priv->current_command_oid = 0;
791 if (ret < 0)
792 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
793 __func__, oid_to_string(oid), ret,
794 le32_to_cpu(u.get_c->status));
795
796 if (ret == 0) {
797 resplen = le32_to_cpu(u.get_c->len);
798 respoffs = le32_to_cpu(u.get_c->offset) + 8;
799
800 if (respoffs > buflen) {
801 /* Device returned data offset outside buffer, error. */
802 netdev_dbg(dev->net, "%s(%s): received invalid "
803 "data offset: %d > %d\n", __func__,
804 oid_to_string(oid), respoffs, buflen);
805
806 ret = -EINVAL;
807 goto exit_unlock;
808 }
809
810 if ((resplen + respoffs) > buflen) {
811 /* Device would have returned more data if buffer would
812 * have been big enough. Copy just the bits that we got.
813 */
814 copylen = buflen - respoffs;
815 } else {
816 copylen = resplen;
817 }
818
819 if (copylen > *len)
820 copylen = *len;
821
822 memcpy(data, u.buf + respoffs, copylen);
823
824 *len = resplen;
825
826 ret = rndis_error_status(u.get_c->status);
827 if (ret < 0)
828 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
829 __func__, oid_to_string(oid),
830 le32_to_cpu(u.get_c->status), ret);
831 }
832
833exit_unlock:
834 mutex_unlock(&priv->command_lock);
835
836 if (u.buf != priv->command_buffer)
837 kfree(u.buf);
838 return ret;
839}
840
841static int rndis_set_oid(struct usbnet *dev, __le32 oid, const void *data,
842 int len)
843{
844 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
845 union {
846 void *buf;
847 struct rndis_msg_hdr *header;
848 struct rndis_set *set;
849 struct rndis_set_c *set_c;
850 } u;
851 int ret, buflen;
852
853 buflen = len + sizeof(*u.set);
854 if (buflen < CONTROL_BUFFER_SIZE)
855 buflen = CONTROL_BUFFER_SIZE;
856
857 if (buflen > COMMAND_BUFFER_SIZE) {
858 u.buf = kmalloc(buflen, GFP_KERNEL);
859 if (!u.buf)
860 return -ENOMEM;
861 } else {
862 u.buf = priv->command_buffer;
863 }
864
865 mutex_lock(&priv->command_lock);
866
867 memset(u.set, 0, sizeof *u.set);
868 u.set->msg_type = RNDIS_MSG_SET;
869 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
870 u.set->oid = oid;
871 u.set->len = cpu_to_le32(len);
872 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
873 u.set->handle = cpu_to_le32(0);
874 memcpy(u.buf + sizeof(*u.set), data, len);
875
876 priv->current_command_oid = oid;
877 ret = rndis_command(dev, u.header, buflen);
878 priv->current_command_oid = 0;
879 if (ret < 0)
880 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
881 __func__, oid_to_string(oid), ret,
882 le32_to_cpu(u.set_c->status));
883
884 if (ret == 0) {
885 ret = rndis_error_status(u.set_c->status);
886
887 if (ret < 0)
888 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
889 __func__, oid_to_string(oid),
890 le32_to_cpu(u.set_c->status), ret);
891 }
892
893 mutex_unlock(&priv->command_lock);
894
895 if (u.buf != priv->command_buffer)
896 kfree(u.buf);
897 return ret;
898}
899
900static int rndis_reset(struct usbnet *usbdev)
901{
902 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
903 struct rndis_reset *reset;
904 int ret;
905
906 mutex_lock(&priv->command_lock);
907
908 reset = (void *)priv->command_buffer;
909 memset(reset, 0, sizeof(*reset));
910 reset->msg_type = RNDIS_MSG_RESET;
911 reset->msg_len = cpu_to_le32(sizeof(*reset));
912 priv->current_command_oid = 0;
913 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
914
915 mutex_unlock(&priv->command_lock);
916
917 if (ret < 0)
918 return ret;
919 return 0;
920}
921
922/*
923 * Specs say that we can only set config parameters only soon after device
924 * initialization.
925 * value_type: 0 = u32, 2 = unicode string
926 */
927static int rndis_set_config_parameter(struct usbnet *dev, char *param,
928 int value_type, void *value)
929{
930 struct ndis_config_param *infobuf;
931 int value_len, info_len, param_len, ret, i;
932 __le16 *unibuf;
933 __le32 *dst_value;
934
935 if (value_type == 0)
936 value_len = sizeof(__le32);
937 else if (value_type == 2)
938 value_len = strlen(value) * sizeof(__le16);
939 else
940 return -EINVAL;
941
942 param_len = strlen(param) * sizeof(__le16);
943 info_len = sizeof(*infobuf) + param_len + value_len;
944
945#ifdef DEBUG
946 info_len += 12;
947#endif
948 infobuf = kmalloc(info_len, GFP_KERNEL);
949 if (!infobuf)
950 return -ENOMEM;
951
952#ifdef DEBUG
953 info_len -= 12;
954 /* extra 12 bytes are for padding (debug output) */
955 memset(infobuf, 0xCC, info_len + 12);
956#endif
957
958 if (value_type == 2)
959 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
960 param, (u8 *)value);
961 else
962 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
963 param, *(u32 *)value);
964
965 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
966 infobuf->name_length = cpu_to_le32(param_len);
967 infobuf->type = cpu_to_le32(value_type);
968 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
969 infobuf->value_length = cpu_to_le32(value_len);
970
971 /* simple string to unicode string conversion */
972 unibuf = (void *)infobuf + sizeof(*infobuf);
973 for (i = 0; i < param_len / sizeof(__le16); i++)
974 unibuf[i] = cpu_to_le16(param[i]);
975
976 if (value_type == 2) {
977 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
978 for (i = 0; i < value_len / sizeof(__le16); i++)
979 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
980 } else {
981 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
982 *dst_value = cpu_to_le32(*(u32 *)value);
983 }
984
985#ifdef DEBUG
986 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
987 for (i = 0; i < info_len; i += 12) {
988 u32 *tmp = (u32 *)((u8 *)infobuf + i);
989 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
990 cpu_to_be32(tmp[0]),
991 cpu_to_be32(tmp[1]),
992 cpu_to_be32(tmp[2]));
993 }
994#endif
995
996 ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
997 infobuf, info_len);
998 if (ret != 0)
999 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
1000 ret);
1001
1002 kfree(infobuf);
1003 return ret;
1004}
1005
1006static int rndis_set_config_parameter_str(struct usbnet *dev,
1007 char *param, char *value)
1008{
1009 return rndis_set_config_parameter(dev, param, 2, value);
1010}
1011
1012/*
1013 * data conversion functions
1014 */
1015static int level_to_qual(int level)
1016{
1017 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
1018 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
1019}
1020
1021/*
1022 * common functions
1023 */
1024static int set_infra_mode(struct usbnet *usbdev, int mode);
1025static void restore_keys(struct usbnet *usbdev);
1026static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
1027 bool *matched);
1028
1029static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
1030{
1031 __le32 tmp;
1032
1033 /* Note: OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
1034 tmp = cpu_to_le32(1);
1035 return rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1036 sizeof(tmp));
1037}
1038
1039static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
1040{
1041 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1042 int ret;
1043
1044 ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
1045 if (ret < 0) {
1046 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
1047 return ret;
1048 }
1049 if (ret == 0) {
1050 priv->radio_on = true;
1051 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1052 }
1053
1054 return ret;
1055}
1056
1057static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1058{
1059 int ret;
1060
1061 ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
1062 if (ret < 0) {
1063 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1064 bssid, ret);
1065 return ret;
1066 }
1067
1068 return ret;
1069}
1070
1071static int clear_bssid(struct usbnet *usbdev)
1072{
1073 static const u8 broadcast_mac[ETH_ALEN] = {
1074 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1075 };
1076
1077 return set_bssid(usbdev, broadcast_mac);
1078}
1079
1080static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1081{
1082 int ret, len;
1083
1084 len = ETH_ALEN;
1085 ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
1086
1087 if (ret != 0)
1088 memset(bssid, 0, ETH_ALEN);
1089
1090 return ret;
1091}
1092
1093static int get_association_info(struct usbnet *usbdev,
1094 struct ndis_80211_assoc_info *info, int len)
1095{
1096 return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
1097 info, &len);
1098}
1099
1100static bool is_associated(struct usbnet *usbdev)
1101{
1102 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1103 u8 bssid[ETH_ALEN];
1104 int ret;
1105
1106 if (!priv->radio_on)
1107 return false;
1108
1109 ret = get_bssid(usbdev, bssid);
1110
1111 return (ret == 0 && !is_zero_ether_addr(bssid));
1112}
1113
1114static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1115{
1116 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1117 struct ndis_80211_ssid ssid;
1118 int i, ret = 0;
1119
1120 if (priv->radio_on) {
1121 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1122 if (ret == 0) {
1123 priv->radio_on = false;
1124 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1125 __func__);
1126
1127 if (reset_ssid)
1128 msleep(100);
1129 }
1130 }
1131
1132 /* disassociate causes radio to be turned off; if reset_ssid
1133 * is given, set random ssid to enable radio */
1134 if (reset_ssid) {
1135 /* Set device to infrastructure mode so we don't get ad-hoc
1136 * 'media connect' indications with the random ssid.
1137 */
1138 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1139
1140 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1141 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1142 ssid.essid[0] = 0x1;
1143 ssid.essid[1] = 0xff;
1144 for (i = 2; i < sizeof(ssid.essid); i++)
1145 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1146 ret = set_essid(usbdev, &ssid);
1147 }
1148 return ret;
1149}
1150
1151static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1152 enum nl80211_auth_type auth_type, int keymgmt)
1153{
1154 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155 __le32 tmp;
1156 int auth_mode, ret;
1157
1158 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1159 __func__, wpa_version, auth_type, keymgmt);
1160
1161 if (wpa_version & NL80211_WPA_VERSION_2) {
1162 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1163 auth_mode = NDIS_80211_AUTH_WPA2;
1164 else
1165 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1166 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1167 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1168 auth_mode = NDIS_80211_AUTH_WPA;
1169 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1170 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1171 else
1172 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1173 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1174 auth_mode = NDIS_80211_AUTH_SHARED;
1175 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1176 auth_mode = NDIS_80211_AUTH_OPEN;
1177 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1178 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1179 else
1180 return -ENOTSUPP;
1181
1182 tmp = cpu_to_le32(auth_mode);
1183 ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1184 sizeof(tmp));
1185 if (ret != 0) {
1186 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1187 ret);
1188 return ret;
1189 }
1190
1191 priv->wpa_version = wpa_version;
1192
1193 return 0;
1194}
1195
1196static int set_priv_filter(struct usbnet *usbdev)
1197{
1198 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1199 __le32 tmp;
1200
1201 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1202 __func__, priv->wpa_version);
1203
1204 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1205 priv->wpa_version & NL80211_WPA_VERSION_1)
1206 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1207 else
1208 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1209
1210 return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1211 sizeof(tmp));
1212}
1213
1214static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1215{
1216 __le32 tmp;
1217 int encr_mode, ret;
1218
1219 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1220 __func__, pairwise, groupwise);
1221
1222 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1223 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1224 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1225 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1226 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1227 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1228 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1229 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1230 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1231 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1232 else
1233 encr_mode = NDIS_80211_ENCR_DISABLED;
1234
1235 tmp = cpu_to_le32(encr_mode);
1236 ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1237 sizeof(tmp));
1238 if (ret != 0) {
1239 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1240 ret);
1241 return ret;
1242 }
1243
1244 return 0;
1245}
1246
1247static int set_infra_mode(struct usbnet *usbdev, int mode)
1248{
1249 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1250 __le32 tmp;
1251 int ret;
1252
1253 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1254 __func__, priv->infra_mode);
1255
1256 tmp = cpu_to_le32(mode);
1257 ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1258 sizeof(tmp));
1259 if (ret != 0) {
1260 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1261 ret);
1262 return ret;
1263 }
1264
1265 /* NDIS drivers clear keys when infrastructure mode is
1266 * changed. But Linux tools assume otherwise. So set the
1267 * keys */
1268 restore_keys(usbdev);
1269
1270 priv->infra_mode = mode;
1271 return 0;
1272}
1273
1274static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1275{
1276 __le32 tmp;
1277
1278 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1279
1280 if (rts_threshold < 0 || rts_threshold > 2347)
1281 rts_threshold = 2347;
1282
1283 tmp = cpu_to_le32(rts_threshold);
1284 return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1285 sizeof(tmp));
1286}
1287
1288static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1289{
1290 __le32 tmp;
1291
1292 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1293
1294 if (frag_threshold < 256 || frag_threshold > 2346)
1295 frag_threshold = 2346;
1296
1297 tmp = cpu_to_le32(frag_threshold);
1298 return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1299 sizeof(tmp));
1300}
1301
1302static void set_default_iw_params(struct usbnet *usbdev)
1303{
1304 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1305 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1306 RNDIS_WLAN_KEY_MGMT_NONE);
1307 set_priv_filter(usbdev);
1308 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1309}
1310
1311static int deauthenticate(struct usbnet *usbdev)
1312{
1313 int ret;
1314
1315 ret = disassociate(usbdev, true);
1316 set_default_iw_params(usbdev);
1317 return ret;
1318}
1319
1320static int set_channel(struct usbnet *usbdev, int channel)
1321{
1322 struct ndis_80211_conf config;
1323 unsigned int dsconfig;
1324 int len, ret;
1325
1326 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1327
1328 /* this OID is valid only when not associated */
1329 if (is_associated(usbdev))
1330 return 0;
1331
1332 dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1333
1334 len = sizeof(config);
1335 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1336 if (ret < 0) {
1337 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1338 __func__);
1339 return ret;
1340 }
1341
1342 config.ds_config = cpu_to_le32(dsconfig);
1343 ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1344 sizeof(config));
1345
1346 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1347
1348 return ret;
1349}
1350
1351/* index must be 0 - N, as per NDIS */
1352static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1353 int index)
1354{
1355 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1356 struct ndis_80211_wep_key ndis_key;
1357 u32 cipher;
1358 int ret;
1359
1360 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1361 __func__, index, key_len);
1362
1363 if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1364 return -EINVAL;
1365
1366 if (key_len == 5)
1367 cipher = WLAN_CIPHER_SUITE_WEP40;
1368 else
1369 cipher = WLAN_CIPHER_SUITE_WEP104;
1370
1371 memset(&ndis_key, 0, sizeof(ndis_key));
1372
1373 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1374 ndis_key.length = cpu_to_le32(key_len);
1375 ndis_key.index = cpu_to_le32(index);
1376 memcpy(&ndis_key.material, key, key_len);
1377
1378 if (index == priv->encr_tx_key_index) {
1379 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1380 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1381 RNDIS_WLAN_ALG_NONE);
1382 if (ret)
1383 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1384 ret);
1385 }
1386
1387 ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1388 sizeof(ndis_key));
1389 if (ret != 0) {
1390 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1391 index + 1, ret);
1392 return ret;
1393 }
1394
1395 priv->encr_keys[index].len = key_len;
1396 priv->encr_keys[index].cipher = cipher;
1397 memcpy(&priv->encr_keys[index].material, key, key_len);
1398 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1399
1400 return 0;
1401}
1402
1403static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1404 int index, const u8 *addr, const u8 *rx_seq,
1405 int seq_len, u32 cipher, __le32 flags)
1406{
1407 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1408 struct ndis_80211_key ndis_key;
1409 bool is_addr_ok;
1410 int ret;
1411
1412 if (index < 0 || index >= 4) {
1413 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1414 __func__, index);
1415 return -EINVAL;
1416 }
1417 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1418 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1419 __func__, key_len);
1420 return -EINVAL;
1421 }
1422 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1423 if (!rx_seq || seq_len <= 0) {
1424 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1425 __func__);
1426 return -EINVAL;
1427 }
1428 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1429 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1430 return -EINVAL;
1431 }
1432 }
1433
1434 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1435 !is_broadcast_ether_addr(addr);
1436 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1437 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1438 __func__, addr);
1439 return -EINVAL;
1440 }
1441
1442 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1443 __func__, index,
1444 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1445 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1446 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1447
1448 memset(&ndis_key, 0, sizeof(ndis_key));
1449
1450 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1451 sizeof(ndis_key.material) + key_len);
1452 ndis_key.length = cpu_to_le32(key_len);
1453 ndis_key.index = cpu_to_le32(index) | flags;
1454
1455 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1456 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1457 * different order than NDIS spec, so swap the order here. */
1458 memcpy(ndis_key.material, key, 16);
1459 memcpy(ndis_key.material + 16, key + 24, 8);
1460 memcpy(ndis_key.material + 24, key + 16, 8);
1461 } else
1462 memcpy(ndis_key.material, key, key_len);
1463
1464 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1465 memcpy(ndis_key.rsc, rx_seq, seq_len);
1466
1467 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1468 /* pairwise key */
1469 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1470 } else {
1471 /* group key */
1472 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1473 memset(ndis_key.bssid, 0xff, ETH_ALEN);
1474 else
1475 get_bssid(usbdev, ndis_key.bssid);
1476 }
1477
1478 ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1479 le32_to_cpu(ndis_key.size));
1480 netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1481 __func__, ret);
1482 if (ret != 0)
1483 return ret;
1484
1485 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1486 priv->encr_keys[index].len = key_len;
1487 priv->encr_keys[index].cipher = cipher;
1488 memcpy(&priv->encr_keys[index].material, key, key_len);
1489 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1490 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1491 else
1492 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1493
1494 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1495 priv->encr_tx_key_index = index;
1496
1497 return 0;
1498}
1499
1500static int restore_key(struct usbnet *usbdev, int key_idx)
1501{
1502 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1503 struct rndis_wlan_encr_key key;
1504
1505 if (is_wpa_key(priv, key_idx))
1506 return 0;
1507
1508 key = priv->encr_keys[key_idx];
1509
1510 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1511
1512 if (key.len == 0)
1513 return 0;
1514
1515 return add_wep_key(usbdev, key.material, key.len, key_idx);
1516}
1517
1518static void restore_keys(struct usbnet *usbdev)
1519{
1520 int i;
1521
1522 for (i = 0; i < 4; i++)
1523 restore_key(usbdev, i);
1524}
1525
1526static void clear_key(struct rndis_wlan_private *priv, int idx)
1527{
1528 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1529}
1530
1531/* remove_key is for both wep and wpa */
1532static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1533{
1534 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1535 struct ndis_80211_remove_key remove_key;
1536 __le32 keyindex;
1537 bool is_wpa;
1538 int ret;
1539
1540 if (priv->encr_keys[index].len == 0)
1541 return 0;
1542
1543 is_wpa = is_wpa_key(priv, index);
1544
1545 netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1546 __func__, index, is_wpa ? "wpa" : "wep",
1547 priv->encr_keys[index].len);
1548
1549 clear_key(priv, index);
1550
1551 if (is_wpa) {
1552 remove_key.size = cpu_to_le32(sizeof(remove_key));
1553 remove_key.index = cpu_to_le32(index);
1554 if (bssid) {
1555 /* pairwise key */
1556 if (!is_broadcast_ether_addr(bssid))
1557 remove_key.index |=
1558 NDIS_80211_ADDKEY_PAIRWISE_KEY;
1559 memcpy(remove_key.bssid, bssid,
1560 sizeof(remove_key.bssid));
1561 } else
1562 memset(remove_key.bssid, 0xff,
1563 sizeof(remove_key.bssid));
1564
1565 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1566 sizeof(remove_key));
1567 if (ret != 0)
1568 return ret;
1569 } else {
1570 keyindex = cpu_to_le32(index);
1571 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1572 sizeof(keyindex));
1573 if (ret != 0) {
1574 netdev_warn(usbdev->net,
1575 "removing encryption key %d failed (%08X)\n",
1576 index, ret);
1577 return ret;
1578 }
1579 }
1580
1581 /* if it is transmit key, disable encryption */
1582 if (index == priv->encr_tx_key_index)
1583 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1584
1585 return 0;
1586}
1587
1588static void set_multicast_list(struct usbnet *usbdev)
1589{
1590 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1591 struct netdev_hw_addr *ha;
1592 __le32 filter, basefilter;
1593 int ret;
1594 char *mc_addrs = NULL;
1595 int mc_count;
1596
1597 basefilter = filter = RNDIS_PACKET_TYPE_DIRECTED |
1598 RNDIS_PACKET_TYPE_BROADCAST;
1599
1600 if (usbdev->net->flags & IFF_PROMISC) {
1601 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1602 RNDIS_PACKET_TYPE_ALL_LOCAL;
1603 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1604 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1605 }
1606
1607 if (filter != basefilter)
1608 goto set_filter;
1609
1610 /*
1611 * mc_list should be accessed holding the lock, so copy addresses to
1612 * local buffer first.
1613 */
1614 netif_addr_lock_bh(usbdev->net);
1615 mc_count = netdev_mc_count(usbdev->net);
1616 if (mc_count > priv->multicast_size) {
1617 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1618 } else if (mc_count) {
1619 int i = 0;
1620
1621 mc_addrs = kmalloc(mc_count * ETH_ALEN, GFP_ATOMIC);
1622 if (!mc_addrs) {
1623 netdev_warn(usbdev->net,
1624 "couldn't alloc %d bytes of memory\n",
1625 mc_count * ETH_ALEN);
1626 netif_addr_unlock_bh(usbdev->net);
1627 return;
1628 }
1629
1630 netdev_for_each_mc_addr(ha, usbdev->net)
1631 memcpy(mc_addrs + i++ * ETH_ALEN,
1632 ha->addr, ETH_ALEN);
1633 }
1634 netif_addr_unlock_bh(usbdev->net);
1635
1636 if (filter != basefilter)
1637 goto set_filter;
1638
1639 if (mc_count) {
1640 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, mc_addrs,
1641 mc_count * ETH_ALEN);
1642 kfree(mc_addrs);
1643 if (ret == 0)
1644 filter |= RNDIS_PACKET_TYPE_MULTICAST;
1645 else
1646 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1647
1648 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1649 mc_count, priv->multicast_size, ret);
1650 }
1651
1652set_filter:
1653 ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1654 sizeof(filter));
1655 if (ret < 0) {
1656 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1657 le32_to_cpu(filter));
1658 }
1659
1660 netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1661 le32_to_cpu(filter), ret);
1662}
1663
1664#ifdef DEBUG
1665static void debug_print_pmkids(struct usbnet *usbdev,
1666 struct ndis_80211_pmkid *pmkids,
1667 const char *func_str)
1668{
1669 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1670 int i, len, count, max_pmkids, entry_len;
1671
1672 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1673 len = le32_to_cpu(pmkids->length);
1674 count = le32_to_cpu(pmkids->bssid_info_count);
1675
1676 entry_len = (count > 0) ? (len - sizeof(*pmkids)) / count : -1;
1677
1678 netdev_dbg(usbdev->net, "%s(): %d PMKIDs (data len: %d, entry len: "
1679 "%d)\n", func_str, count, len, entry_len);
1680
1681 if (count > max_pmkids)
1682 count = max_pmkids;
1683
1684 for (i = 0; i < count; i++) {
1685 u32 *tmp = (u32 *)pmkids->bssid_info[i].pmkid;
1686
1687 netdev_dbg(usbdev->net, "%s(): bssid: %pM, "
1688 "pmkid: %08X:%08X:%08X:%08X\n",
1689 func_str, pmkids->bssid_info[i].bssid,
1690 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
1691 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
1692 }
1693}
1694#else
1695static void debug_print_pmkids(struct usbnet *usbdev,
1696 struct ndis_80211_pmkid *pmkids,
1697 const char *func_str)
1698{
1699 return;
1700}
1701#endif
1702
1703static struct ndis_80211_pmkid *get_device_pmkids(struct usbnet *usbdev)
1704{
1705 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1706 struct ndis_80211_pmkid *pmkids;
1707 int len, ret, max_pmkids;
1708
1709 max_pmkids = priv->wdev.wiphy->max_num_pmkids;
1710 len = sizeof(*pmkids) + max_pmkids * sizeof(pmkids->bssid_info[0]);
1711
1712 pmkids = kzalloc(len, GFP_KERNEL);
1713 if (!pmkids)
1714 return ERR_PTR(-ENOMEM);
1715
1716 pmkids->length = cpu_to_le32(len);
1717 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1718
1719 ret = rndis_query_oid(usbdev, OID_802_11_PMKID, pmkids, &len);
1720 if (ret < 0) {
1721 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d)"
1722 " -> %d\n", __func__, len, max_pmkids, ret);
1723
1724 kfree(pmkids);
1725 return ERR_PTR(ret);
1726 }
1727
1728 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1729 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1730
1731 debug_print_pmkids(usbdev, pmkids, __func__);
1732
1733 return pmkids;
1734}
1735
1736static int set_device_pmkids(struct usbnet *usbdev,
1737 struct ndis_80211_pmkid *pmkids)
1738{
1739 int ret, len, num_pmkids;
1740
1741 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1742 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1743 pmkids->length = cpu_to_le32(len);
1744
1745 debug_print_pmkids(usbdev, pmkids, __func__);
1746
1747 ret = rndis_set_oid(usbdev, OID_802_11_PMKID, pmkids,
1748 le32_to_cpu(pmkids->length));
1749 if (ret < 0) {
1750 netdev_dbg(usbdev->net, "%s(): OID_802_11_PMKID(%d, %d) -> %d"
1751 "\n", __func__, len, num_pmkids, ret);
1752 }
1753
1754 kfree(pmkids);
1755 return ret;
1756}
1757
1758static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1759 struct ndis_80211_pmkid *pmkids,
1760 struct cfg80211_pmksa *pmksa,
1761 int max_pmkids)
1762{
1763 int i, len, count, newlen, err;
1764
1765 len = le32_to_cpu(pmkids->length);
1766 count = le32_to_cpu(pmkids->bssid_info_count);
1767
1768 if (count > max_pmkids)
1769 count = max_pmkids;
1770
1771 for (i = 0; i < count; i++)
1772 if (!compare_ether_addr(pmkids->bssid_info[i].bssid,
1773 pmksa->bssid))
1774 break;
1775
1776 /* pmkid not found */
1777 if (i == count) {
1778 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1779 __func__, pmksa->bssid);
1780 err = -ENOENT;
1781 goto error;
1782 }
1783
1784 for (; i + 1 < count; i++)
1785 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1786
1787 count--;
1788 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1789
1790 pmkids->length = cpu_to_le32(newlen);
1791 pmkids->bssid_info_count = cpu_to_le32(count);
1792
1793 return pmkids;
1794error:
1795 kfree(pmkids);
1796 return ERR_PTR(err);
1797}
1798
1799static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1800 struct ndis_80211_pmkid *pmkids,
1801 struct cfg80211_pmksa *pmksa,
1802 int max_pmkids)
1803{
1804 int i, err, len, count, newlen;
1805
1806 len = le32_to_cpu(pmkids->length);
1807 count = le32_to_cpu(pmkids->bssid_info_count);
1808
1809 if (count > max_pmkids)
1810 count = max_pmkids;
1811
1812 /* update with new pmkid */
1813 for (i = 0; i < count; i++) {
1814 if (compare_ether_addr(pmkids->bssid_info[i].bssid,
1815 pmksa->bssid))
1816 continue;
1817
1818 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1819 WLAN_PMKID_LEN);
1820
1821 return pmkids;
1822 }
1823
1824 /* out of space, return error */
1825 if (i == max_pmkids) {
1826 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1827 err = -ENOSPC;
1828 goto error;
1829 }
1830
1831 /* add new pmkid */
1832 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1833
1834 pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1835 if (!pmkids) {
1836 err = -ENOMEM;
1837 goto error;
1838 }
1839
1840 pmkids->length = cpu_to_le32(newlen);
1841 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1842
1843 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1844 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1845
1846 return pmkids;
1847error:
1848 kfree(pmkids);
1849 return ERR_PTR(err);
1850}
1851
1852/*
1853 * cfg80211 ops
1854 */
1855static int rndis_change_virtual_intf(struct wiphy *wiphy,
1856 struct net_device *dev,
1857 enum nl80211_iftype type, u32 *flags,
1858 struct vif_params *params)
1859{
1860 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1861 struct usbnet *usbdev = priv->usbdev;
1862 int mode;
1863
1864 switch (type) {
1865 case NL80211_IFTYPE_ADHOC:
1866 mode = NDIS_80211_INFRA_ADHOC;
1867 break;
1868 case NL80211_IFTYPE_STATION:
1869 mode = NDIS_80211_INFRA_INFRA;
1870 break;
1871 default:
1872 return -EINVAL;
1873 }
1874
1875 priv->wdev.iftype = type;
1876
1877 return set_infra_mode(usbdev, mode);
1878}
1879
1880static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1881{
1882 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1883 struct usbnet *usbdev = priv->usbdev;
1884 int err;
1885
1886 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1887 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1888 if (err < 0)
1889 return err;
1890 }
1891
1892 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1893 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1894 if (err < 0)
1895 return err;
1896 }
1897
1898 return 0;
1899}
1900
1901static int rndis_set_tx_power(struct wiphy *wiphy,
1902 enum nl80211_tx_power_setting type,
1903 int mbm)
1904{
1905 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1906 struct usbnet *usbdev = priv->usbdev;
1907
1908 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1909 __func__, type, mbm);
1910
1911 if (mbm < 0 || (mbm % 100))
1912 return -ENOTSUPP;
1913
1914 /* Device doesn't support changing txpower after initialization, only
1915 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1916 * currently used.
1917 */
1918 if (type == NL80211_TX_POWER_AUTOMATIC ||
1919 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1920 if (!priv->radio_on)
1921 disassociate(usbdev, true); /* turn on radio */
1922
1923 return 0;
1924 }
1925
1926 return -ENOTSUPP;
1927}
1928
1929static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1930{
1931 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1932 struct usbnet *usbdev = priv->usbdev;
1933
1934 *dbm = get_bcm4320_power_dbm(priv);
1935
1936 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1937
1938 return 0;
1939}
1940
1941#define SCAN_DELAY_JIFFIES (6 * HZ)
1942static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1943 struct cfg80211_scan_request *request)
1944{
1945 struct usbnet *usbdev = netdev_priv(dev);
1946 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1947 int ret;
1948 int delay = SCAN_DELAY_JIFFIES;
1949
1950 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1951
1952 /* Get current bssid list from device before new scan, as new scan
1953 * clears internal bssid list.
1954 */
1955 rndis_check_bssid_list(usbdev, NULL, NULL);
1956
1957 if (!request)
1958 return -EINVAL;
1959
1960 if (priv->scan_request && priv->scan_request != request)
1961 return -EBUSY;
1962
1963 priv->scan_request = request;
1964
1965 ret = rndis_start_bssid_list_scan(usbdev);
1966 if (ret == 0) {
1967 if (priv->device_type == RNDIS_BCM4320A)
1968 delay = HZ;
1969
1970 /* Wait before retrieving scan results from device */
1971 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1972 }
1973
1974 return ret;
1975}
1976
1977static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1978 struct ndis_80211_bssid_ex *bssid)
1979{
1980 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1981 struct ieee80211_channel *channel;
1982 s32 signal;
1983 u64 timestamp;
1984 u16 capability;
1985 u16 beacon_interval;
1986 struct ndis_80211_fixed_ies *fixed;
1987 int ie_len, bssid_len;
1988 u8 *ie;
1989
1990 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1991 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1992
1993 /* parse bssid structure */
1994 bssid_len = le32_to_cpu(bssid->length);
1995
1996 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1997 sizeof(struct ndis_80211_fixed_ies))
1998 return NULL;
1999
2000 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2001
2002 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2003 ie_len = min(bssid_len - (int)sizeof(*bssid),
2004 (int)le32_to_cpu(bssid->ie_length));
2005 ie_len -= sizeof(struct ndis_80211_fixed_ies);
2006 if (ie_len < 0)
2007 return NULL;
2008
2009 /* extract data for cfg80211_inform_bss */
2010 channel = ieee80211_get_channel(priv->wdev.wiphy,
2011 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2012 if (!channel)
2013 return NULL;
2014
2015 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2016 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2017 capability = le16_to_cpu(fixed->capabilities);
2018 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2019
2020 return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
2021 timestamp, capability, beacon_interval, ie, ie_len, signal,
2022 GFP_KERNEL);
2023}
2024
2025static struct ndis_80211_bssid_ex *next_bssid_list_item(
2026 struct ndis_80211_bssid_ex *bssid,
2027 int *bssid_len, void *buf, int len)
2028{
2029 void *buf_end, *bssid_end;
2030
2031 buf_end = (char *)buf + len;
2032 bssid_end = (char *)bssid + *bssid_len;
2033
2034 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2035 *bssid_len = 0;
2036 return NULL;
2037 } else {
2038 bssid = (void *)((char *)bssid + *bssid_len);
2039 *bssid_len = le32_to_cpu(bssid->length);
2040 return bssid;
2041 }
2042}
2043
2044static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2045 int bssid_len, void *buf, int len)
2046{
2047 void *buf_end, *bssid_end;
2048
2049 if (!bssid || bssid_len <= 0 || bssid_len > len)
2050 return false;
2051
2052 buf_end = (char *)buf + len;
2053 bssid_end = (char *)bssid + bssid_len;
2054
2055 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2056}
2057
2058static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2059 bool *matched)
2060{
2061 void *buf = NULL;
2062 struct ndis_80211_bssid_list_ex *bssid_list;
2063 struct ndis_80211_bssid_ex *bssid;
2064 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2065
2066 netdev_dbg(usbdev->net, "%s()\n", __func__);
2067
2068 len = CONTROL_BUFFER_SIZE;
2069resize_buf:
2070 buf = kzalloc(len, GFP_KERNEL);
2071 if (!buf) {
2072 ret = -ENOMEM;
2073 goto out;
2074 }
2075
2076 /* BSSID-list might have got bigger last time we checked, keep
2077 * resizing until it won't get any bigger.
2078 */
2079 new_len = len;
2080 ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &new_len);
2081 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2082 goto out;
2083
2084 if (new_len > len) {
2085 len = new_len;
2086 kfree(buf);
2087 goto resize_buf;
2088 }
2089
2090 len = new_len;
2091
2092 bssid_list = buf;
2093 count = le32_to_cpu(bssid_list->num_items);
2094 real_count = 0;
2095 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2096
2097 bssid_len = 0;
2098 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2099
2100 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2101 * received 'num_items' and walking through full bssid buffer instead.
2102 */
2103 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2104 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2105 matched) {
2106 if (compare_ether_addr(bssid->mac, match_bssid))
2107 *matched = true;
2108 }
2109
2110 real_count++;
2111 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2112 }
2113
2114 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2115 " %d\n", __func__, count, real_count);
2116
2117out:
2118 kfree(buf);
2119 return ret;
2120}
2121
2122static void rndis_get_scan_results(struct work_struct *work)
2123{
2124 struct rndis_wlan_private *priv =
2125 container_of(work, struct rndis_wlan_private, scan_work.work);
2126 struct usbnet *usbdev = priv->usbdev;
2127 int ret;
2128
2129 netdev_dbg(usbdev->net, "get_scan_results\n");
2130
2131 if (!priv->scan_request)
2132 return;
2133
2134 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2135
2136 cfg80211_scan_done(priv->scan_request, ret < 0);
2137
2138 priv->scan_request = NULL;
2139}
2140
2141static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2142 struct cfg80211_connect_params *sme)
2143{
2144 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2145 struct usbnet *usbdev = priv->usbdev;
2146 struct ieee80211_channel *channel = sme->channel;
2147 struct ndis_80211_ssid ssid;
2148 int pairwise = RNDIS_WLAN_ALG_NONE;
2149 int groupwise = RNDIS_WLAN_ALG_NONE;
2150 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2151 int length, i, ret, chan = -1;
2152
2153 if (channel)
2154 chan = ieee80211_frequency_to_channel(channel->center_freq);
2155
2156 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2157 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2158 pairwise |=
2159 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2160
2161 if (sme->crypto.n_ciphers_pairwise > 0 &&
2162 pairwise == RNDIS_WLAN_ALG_NONE) {
2163 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2164 return -ENOTSUPP;
2165 }
2166
2167 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2168 keymgmt |=
2169 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2170
2171 if (sme->crypto.n_akm_suites > 0 &&
2172 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2173 netdev_err(usbdev->net, "Invalid keymgmt\n");
2174 return -ENOTSUPP;
2175 }
2176
2177 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2178 sme->ssid, sme->bssid, chan,
2179 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2180 groupwise, pairwise, keymgmt);
2181
2182 if (is_associated(usbdev))
2183 disassociate(usbdev, false);
2184
2185 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2186 if (ret < 0) {
2187 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2188 ret);
2189 goto err_turn_radio_on;
2190 }
2191
2192 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2193 keymgmt);
2194 if (ret < 0) {
2195 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2196 ret);
2197 goto err_turn_radio_on;
2198 }
2199
2200 set_priv_filter(usbdev);
2201
2202 ret = set_encr_mode(usbdev, pairwise, groupwise);
2203 if (ret < 0) {
2204 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2205 ret);
2206 goto err_turn_radio_on;
2207 }
2208
2209 if (channel) {
2210 ret = set_channel(usbdev, chan);
2211 if (ret < 0) {
2212 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2213 ret);
2214 goto err_turn_radio_on;
2215 }
2216 }
2217
2218 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2219 priv->encr_tx_key_index = sme->key_idx;
2220 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2221 if (ret < 0) {
2222 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2223 ret, sme->key_len, sme->key_idx);
2224 goto err_turn_radio_on;
2225 }
2226 }
2227
2228 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2229 !is_broadcast_ether_addr(sme->bssid)) {
2230 ret = set_bssid(usbdev, sme->bssid);
2231 if (ret < 0) {
2232 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2233 ret);
2234 goto err_turn_radio_on;
2235 }
2236 } else
2237 clear_bssid(usbdev);
2238
2239 length = sme->ssid_len;
2240 if (length > NDIS_802_11_LENGTH_SSID)
2241 length = NDIS_802_11_LENGTH_SSID;
2242
2243 memset(&ssid, 0, sizeof(ssid));
2244 ssid.length = cpu_to_le32(length);
2245 memcpy(ssid.essid, sme->ssid, length);
2246
2247 /* Pause and purge rx queue, so we don't pass packets before
2248 * 'media connect'-indication.
2249 */
2250 usbnet_pause_rx(usbdev);
2251 usbnet_purge_paused_rxq(usbdev);
2252
2253 ret = set_essid(usbdev, &ssid);
2254 if (ret < 0)
2255 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2256 return ret;
2257
2258err_turn_radio_on:
2259 disassociate(usbdev, true);
2260
2261 return ret;
2262}
2263
2264static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2265 u16 reason_code)
2266{
2267 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2268 struct usbnet *usbdev = priv->usbdev;
2269
2270 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2271
2272 priv->connected = false;
2273 memset(priv->bssid, 0, ETH_ALEN);
2274
2275 return deauthenticate(usbdev);
2276}
2277
2278static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2279 struct cfg80211_ibss_params *params)
2280{
2281 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2282 struct usbnet *usbdev = priv->usbdev;
2283 struct ieee80211_channel *channel = params->channel;
2284 struct ndis_80211_ssid ssid;
2285 enum nl80211_auth_type auth_type;
2286 int ret, alg, length, chan = -1;
2287
2288 if (channel)
2289 chan = ieee80211_frequency_to_channel(channel->center_freq);
2290
2291 /* TODO: How to handle ad-hoc encryption?
2292 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2293 * pre-shared for encryption (open/shared/wpa), is key set before
2294 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2295 */
2296 if (params->privacy) {
2297 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2298 alg = RNDIS_WLAN_ALG_WEP;
2299 } else {
2300 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2301 alg = RNDIS_WLAN_ALG_NONE;
2302 }
2303
2304 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2305 params->ssid, params->bssid, chan, params->privacy);
2306
2307 if (is_associated(usbdev))
2308 disassociate(usbdev, false);
2309
2310 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2311 if (ret < 0) {
2312 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2313 ret);
2314 goto err_turn_radio_on;
2315 }
2316
2317 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2318 if (ret < 0) {
2319 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2320 ret);
2321 goto err_turn_radio_on;
2322 }
2323
2324 set_priv_filter(usbdev);
2325
2326 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2327 if (ret < 0) {
2328 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2329 ret);
2330 goto err_turn_radio_on;
2331 }
2332
2333 if (channel) {
2334 ret = set_channel(usbdev, chan);
2335 if (ret < 0) {
2336 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2337 ret);
2338 goto err_turn_radio_on;
2339 }
2340 }
2341
2342 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2343 !is_broadcast_ether_addr(params->bssid)) {
2344 ret = set_bssid(usbdev, params->bssid);
2345 if (ret < 0) {
2346 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2347 ret);
2348 goto err_turn_radio_on;
2349 }
2350 } else
2351 clear_bssid(usbdev);
2352
2353 length = params->ssid_len;
2354 if (length > NDIS_802_11_LENGTH_SSID)
2355 length = NDIS_802_11_LENGTH_SSID;
2356
2357 memset(&ssid, 0, sizeof(ssid));
2358 ssid.length = cpu_to_le32(length);
2359 memcpy(ssid.essid, params->ssid, length);
2360
2361 /* Don't need to pause rx queue for ad-hoc. */
2362 usbnet_purge_paused_rxq(usbdev);
2363 usbnet_resume_rx(usbdev);
2364
2365 ret = set_essid(usbdev, &ssid);
2366 if (ret < 0)
2367 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2368 ret);
2369 return ret;
2370
2371err_turn_radio_on:
2372 disassociate(usbdev, true);
2373
2374 return ret;
2375}
2376
2377static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2378{
2379 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2380 struct usbnet *usbdev = priv->usbdev;
2381
2382 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2383
2384 priv->connected = false;
2385 memset(priv->bssid, 0, ETH_ALEN);
2386
2387 return deauthenticate(usbdev);
2388}
2389
2390static int rndis_set_channel(struct wiphy *wiphy, struct net_device *netdev,
2391 struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2392{
2393 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2394 struct usbnet *usbdev = priv->usbdev;
2395
2396 return set_channel(usbdev,
2397 ieee80211_frequency_to_channel(chan->center_freq));
2398}
2399
2400static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2401 u8 key_index, bool pairwise, const u8 *mac_addr,
2402 struct key_params *params)
2403{
2404 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2405 struct usbnet *usbdev = priv->usbdev;
2406 __le32 flags;
2407
2408 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2409 __func__, key_index, mac_addr, params->cipher);
2410
2411 switch (params->cipher) {
2412 case WLAN_CIPHER_SUITE_WEP40:
2413 case WLAN_CIPHER_SUITE_WEP104:
2414 return add_wep_key(usbdev, params->key, params->key_len,
2415 key_index);
2416 case WLAN_CIPHER_SUITE_TKIP:
2417 case WLAN_CIPHER_SUITE_CCMP:
2418 flags = 0;
2419
2420 if (params->seq && params->seq_len > 0)
2421 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2422 if (mac_addr)
2423 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2424 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2425
2426 return add_wpa_key(usbdev, params->key, params->key_len,
2427 key_index, mac_addr, params->seq,
2428 params->seq_len, params->cipher, flags);
2429 default:
2430 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2431 __func__, params->cipher);
2432 return -ENOTSUPP;
2433 }
2434}
2435
2436static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2437 u8 key_index, bool pairwise, const u8 *mac_addr)
2438{
2439 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2440 struct usbnet *usbdev = priv->usbdev;
2441
2442 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2443
2444 return remove_key(usbdev, key_index, mac_addr);
2445}
2446
2447static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2448 u8 key_index, bool unicast, bool multicast)
2449{
2450 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2451 struct usbnet *usbdev = priv->usbdev;
2452 struct rndis_wlan_encr_key key;
2453
2454 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2455
2456 priv->encr_tx_key_index = key_index;
2457
2458 if (is_wpa_key(priv, key_index))
2459 return 0;
2460
2461 key = priv->encr_keys[key_index];
2462
2463 return add_wep_key(usbdev, key.material, key.len, key_index);
2464}
2465
2466static void rndis_fill_station_info(struct usbnet *usbdev,
2467 struct station_info *sinfo)
2468{
2469 __le32 linkspeed, rssi;
2470 int ret, len;
2471
2472 memset(sinfo, 0, sizeof(*sinfo));
2473
2474 len = sizeof(linkspeed);
2475 ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2476 if (ret == 0) {
2477 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2478 sinfo->filled |= STATION_INFO_TX_BITRATE;
2479 }
2480
2481 len = sizeof(rssi);
2482 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2483 if (ret == 0) {
2484 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2485 sinfo->filled |= STATION_INFO_SIGNAL;
2486 }
2487}
2488
2489static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2490 u8 *mac, struct station_info *sinfo)
2491{
2492 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2493 struct usbnet *usbdev = priv->usbdev;
2494
2495 if (compare_ether_addr(priv->bssid, mac))
2496 return -ENOENT;
2497
2498 rndis_fill_station_info(usbdev, sinfo);
2499
2500 return 0;
2501}
2502
2503static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2504 int idx, u8 *mac, struct station_info *sinfo)
2505{
2506 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2507 struct usbnet *usbdev = priv->usbdev;
2508
2509 if (idx != 0)
2510 return -ENOENT;
2511
2512 memcpy(mac, priv->bssid, ETH_ALEN);
2513
2514 rndis_fill_station_info(usbdev, sinfo);
2515
2516 return 0;
2517}
2518
2519static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2520 struct cfg80211_pmksa *pmksa)
2521{
2522 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2523 struct usbnet *usbdev = priv->usbdev;
2524 struct ndis_80211_pmkid *pmkids;
2525 u32 *tmp = (u32 *)pmksa->pmkid;
2526
2527 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2528 pmksa->bssid,
2529 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2530 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2531
2532 pmkids = get_device_pmkids(usbdev);
2533 if (IS_ERR(pmkids)) {
2534 /* couldn't read PMKID cache from device */
2535 return PTR_ERR(pmkids);
2536 }
2537
2538 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2539 if (IS_ERR(pmkids)) {
2540 /* not found, list full, etc */
2541 return PTR_ERR(pmkids);
2542 }
2543
2544 return set_device_pmkids(usbdev, pmkids);
2545}
2546
2547static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2548 struct cfg80211_pmksa *pmksa)
2549{
2550 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2551 struct usbnet *usbdev = priv->usbdev;
2552 struct ndis_80211_pmkid *pmkids;
2553 u32 *tmp = (u32 *)pmksa->pmkid;
2554
2555 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2556 pmksa->bssid,
2557 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2558 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2559
2560 pmkids = get_device_pmkids(usbdev);
2561 if (IS_ERR(pmkids)) {
2562 /* Couldn't read PMKID cache from device */
2563 return PTR_ERR(pmkids);
2564 }
2565
2566 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2567 if (IS_ERR(pmkids)) {
2568 /* not found, etc */
2569 return PTR_ERR(pmkids);
2570 }
2571
2572 return set_device_pmkids(usbdev, pmkids);
2573}
2574
2575static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2576{
2577 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2578 struct usbnet *usbdev = priv->usbdev;
2579 struct ndis_80211_pmkid pmkid;
2580
2581 netdev_dbg(usbdev->net, "%s()\n", __func__);
2582
2583 memset(&pmkid, 0, sizeof(pmkid));
2584
2585 pmkid.length = cpu_to_le32(sizeof(pmkid));
2586 pmkid.bssid_info_count = cpu_to_le32(0);
2587
2588 return rndis_set_oid(usbdev, OID_802_11_PMKID, &pmkid, sizeof(pmkid));
2589}
2590
2591static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2592 bool enabled, int timeout)
2593{
2594 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2595 struct usbnet *usbdev = priv->usbdev;
2596 int power_mode;
2597 __le32 mode;
2598 int ret;
2599
2600 if (priv->device_type != RNDIS_BCM4320B)
2601 return -ENOTSUPP;
2602
2603 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2604 enabled ? "enabled" : "disabled",
2605 timeout);
2606
2607 if (enabled)
2608 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2609 else
2610 power_mode = NDIS_80211_POWER_MODE_CAM;
2611
2612 if (power_mode == priv->power_mode)
2613 return 0;
2614
2615 priv->power_mode = power_mode;
2616
2617 mode = cpu_to_le32(power_mode);
2618 ret = rndis_set_oid(usbdev, OID_802_11_POWER_MODE, &mode, sizeof(mode));
2619
2620 netdev_dbg(usbdev->net, "%s(): OID_802_11_POWER_MODE -> %d\n",
2621 __func__, ret);
2622
2623 return ret;
2624}
2625
2626static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2627 struct net_device *dev,
2628 s32 rssi_thold, u32 rssi_hyst)
2629{
2630 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2631
2632 priv->cqm_rssi_thold = rssi_thold;
2633 priv->cqm_rssi_hyst = rssi_hyst;
2634 priv->last_cqm_event_rssi = 0;
2635
2636 return 0;
2637}
2638
2639static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2640 struct ndis_80211_assoc_info *info)
2641{
2642 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2643 struct ieee80211_channel *channel;
2644 struct ndis_80211_conf config;
2645 struct ndis_80211_ssid ssid;
2646 s32 signal;
2647 u64 timestamp;
2648 u16 capability;
2649 u16 beacon_interval;
2650 __le32 rssi;
2651 u8 ie_buf[34];
2652 int len, ret, ie_len;
2653
2654 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2655 len = sizeof(rssi);
2656 rssi = 0;
2657 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2658 signal = level_to_qual(le32_to_cpu(rssi));
2659
2660 netdev_dbg(usbdev->net, "%s(): OID_802_11_RSSI -> %d, "
2661 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2662 level_to_qual(le32_to_cpu(rssi)));
2663
2664 /* Get AP capabilities */
2665 if (info) {
2666 capability = le16_to_cpu(info->resp_ie.capa);
2667 } else {
2668 /* Set atleast ESS/IBSS capability */
2669 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2670 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2671 }
2672
2673 /* Get channel and beacon interval */
2674 len = sizeof(config);
2675 ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
2676 netdev_dbg(usbdev->net, "%s(): OID_802_11_CONFIGURATION -> %d\n",
2677 __func__, ret);
2678 if (ret >= 0) {
2679 beacon_interval = le16_to_cpu(config.beacon_period);
2680 channel = ieee80211_get_channel(priv->wdev.wiphy,
2681 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
2682 if (!channel) {
2683 netdev_warn(usbdev->net, "%s(): could not get channel."
2684 "\n", __func__);
2685 return;
2686 }
2687 } else {
2688 netdev_warn(usbdev->net, "%s(): could not get configuration.\n",
2689 __func__);
2690 return;
2691 }
2692
2693 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2694 len = sizeof(ssid);
2695 memset(&ssid, 0, sizeof(ssid));
2696 ret = rndis_query_oid(usbdev, OID_802_11_SSID, &ssid, &len);
2697 netdev_dbg(usbdev->net, "%s(): OID_802_11_SSID -> %d, len: %d, ssid: "
2698 "'%.32s'\n", __func__, ret,
2699 le32_to_cpu(ssid.length), ssid.essid);
2700
2701 if (le32_to_cpu(ssid.length) > 32)
2702 ssid.length = cpu_to_le32(32);
2703
2704 ie_buf[0] = WLAN_EID_SSID;
2705 ie_buf[1] = le32_to_cpu(ssid.length);
2706 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2707
2708 ie_len = le32_to_cpu(ssid.length) + 2;
2709
2710 /* no tsf */
2711 timestamp = 0;
2712
2713 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2714 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2715 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2716 bssid, (u32)timestamp, capability, beacon_interval, ie_len,
2717 ssid.essid, signal);
2718
2719 cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid,
2720 timestamp, capability, beacon_interval, ie_buf, ie_len,
2721 signal, GFP_KERNEL);
2722}
2723
2724/*
2725 * workers, indication handlers, device poller
2726 */
2727static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2728{
2729 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2730 struct ndis_80211_assoc_info *info = NULL;
2731 u8 bssid[ETH_ALEN];
2732 int resp_ie_len, req_ie_len;
2733 u8 *req_ie, *resp_ie;
2734 int ret, offset;
2735 bool roamed = false;
2736 bool match_bss;
2737
2738 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2739 /* received media connect indication while connected, either
2740 * device reassociated with same AP or roamed to new. */
2741 roamed = true;
2742 }
2743
2744 req_ie_len = 0;
2745 resp_ie_len = 0;
2746 req_ie = NULL;
2747 resp_ie = NULL;
2748
2749 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2750 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2751 if (!info) {
2752 /* No memory? Try resume work later */
2753 set_bit(WORK_LINK_UP, &priv->work_pending);
2754 queue_work(priv->workqueue, &priv->work);
2755 return;
2756 }
2757
2758 /* Get association info IEs from device. */
2759 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2760 if (!ret) {
2761 req_ie_len = le32_to_cpu(info->req_ie_length);
2762 if (req_ie_len > 0) {
2763 offset = le32_to_cpu(info->offset_req_ies);
2764
2765 if (offset > CONTROL_BUFFER_SIZE)
2766 offset = CONTROL_BUFFER_SIZE;
2767
2768 req_ie = (u8 *)info + offset;
2769
2770 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2771 req_ie_len =
2772 CONTROL_BUFFER_SIZE - offset;
2773 }
2774
2775 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2776 if (resp_ie_len > 0) {
2777 offset = le32_to_cpu(info->offset_resp_ies);
2778
2779 if (offset > CONTROL_BUFFER_SIZE)
2780 offset = CONTROL_BUFFER_SIZE;
2781
2782 resp_ie = (u8 *)info + offset;
2783
2784 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2785 resp_ie_len =
2786 CONTROL_BUFFER_SIZE - offset;
2787 }
2788 } else {
2789 /* Since rndis_wlan_craft_connected_bss() might use info
2790 * later and expects info to contain valid data if
2791 * non-null, free info and set NULL here.
2792 */
2793 kfree(info);
2794 info = NULL;
2795 }
2796 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2797 return;
2798
2799 ret = get_bssid(usbdev, bssid);
2800 if (ret < 0)
2801 memset(bssid, 0, sizeof(bssid));
2802
2803 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2804 bssid, roamed ? " roamed" : "");
2805
2806 /* Internal bss list in device should contain at least the currently
2807 * connected bss and we can get it to cfg80211 with
2808 * rndis_check_bssid_list().
2809 *
2810 * NDIS spec says: "If the device is associated, but the associated
2811 * BSSID is not in its BSSID scan list, then the driver must add an
2812 * entry for the BSSID at the end of the data that it returns in
2813 * response to query of OID_802_11_BSSID_LIST."
2814 *
2815 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2816 */
2817 match_bss = false;
2818 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2819
2820 if (!is_zero_ether_addr(bssid) && !match_bss) {
2821 /* Couldn't get bss from device, we need to manually craft bss
2822 * for cfg80211.
2823 */
2824 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2825 }
2826
2827 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2828 if (!roamed)
2829 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2830 req_ie_len, resp_ie,
2831 resp_ie_len, 0, GFP_KERNEL);
2832 else
2833 cfg80211_roamed(usbdev->net, NULL, bssid,
2834 req_ie, req_ie_len,
2835 resp_ie, resp_ie_len, GFP_KERNEL);
2836 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2837 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2838
2839 if (info != NULL)
2840 kfree(info);
2841
2842 priv->connected = true;
2843 memcpy(priv->bssid, bssid, ETH_ALEN);
2844
2845 usbnet_resume_rx(usbdev);
2846 netif_carrier_on(usbdev->net);
2847}
2848
2849static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2850{
2851 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2852
2853 if (priv->connected) {
2854 priv->connected = false;
2855 memset(priv->bssid, 0, ETH_ALEN);
2856
2857 deauthenticate(usbdev);
2858
2859 cfg80211_disconnected(usbdev->net, 0, NULL, 0, GFP_KERNEL);
2860 }
2861
2862 netif_carrier_off(usbdev->net);
2863}
2864
2865static void rndis_wlan_worker(struct work_struct *work)
2866{
2867 struct rndis_wlan_private *priv =
2868 container_of(work, struct rndis_wlan_private, work);
2869 struct usbnet *usbdev = priv->usbdev;
2870
2871 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2872 rndis_wlan_do_link_up_work(usbdev);
2873
2874 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2875 rndis_wlan_do_link_down_work(usbdev);
2876
2877 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2878 set_multicast_list(usbdev);
2879}
2880
2881static void rndis_wlan_set_multicast_list(struct net_device *dev)
2882{
2883 struct usbnet *usbdev = netdev_priv(dev);
2884 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2885
2886 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2887 return;
2888
2889 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2890 queue_work(priv->workqueue, &priv->work);
2891}
2892
2893static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2894 struct ndis_80211_status_indication *indication,
2895 int len)
2896{
2897 u8 *buf;
2898 const char *type;
2899 int flags, buflen, key_id;
2900 bool pairwise_error, group_error;
2901 struct ndis_80211_auth_request *auth_req;
2902 enum nl80211_key_type key_type;
2903
2904 /* must have at least one array entry */
2905 if (len < offsetof(struct ndis_80211_status_indication, u) +
2906 sizeof(struct ndis_80211_auth_request)) {
2907 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2908 len);
2909 return;
2910 }
2911
2912 buf = (void *)&indication->u.auth_request[0];
2913 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2914
2915 while (buflen >= sizeof(*auth_req)) {
2916 auth_req = (void *)buf;
2917 type = "unknown";
2918 flags = le32_to_cpu(auth_req->flags);
2919 pairwise_error = false;
2920 group_error = false;
2921
2922 if (flags & 0x1)
2923 type = "reauth request";
2924 if (flags & 0x2)
2925 type = "key update request";
2926 if (flags & 0x6) {
2927 pairwise_error = true;
2928 type = "pairwise_error";
2929 }
2930 if (flags & 0xe) {
2931 group_error = true;
2932 type = "group_error";
2933 }
2934
2935 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2936 type, le32_to_cpu(auth_req->flags));
2937
2938 if (pairwise_error) {
2939 key_type = NL80211_KEYTYPE_PAIRWISE;
2940 key_id = -1;
2941
2942 cfg80211_michael_mic_failure(usbdev->net,
2943 auth_req->bssid,
2944 key_type, key_id, NULL,
2945 GFP_KERNEL);
2946 }
2947
2948 if (group_error) {
2949 key_type = NL80211_KEYTYPE_GROUP;
2950 key_id = -1;
2951
2952 cfg80211_michael_mic_failure(usbdev->net,
2953 auth_req->bssid,
2954 key_type, key_id, NULL,
2955 GFP_KERNEL);
2956 }
2957
2958 buflen -= le32_to_cpu(auth_req->length);
2959 buf += le32_to_cpu(auth_req->length);
2960 }
2961}
2962
2963static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2964 struct ndis_80211_status_indication *indication,
2965 int len)
2966{
2967 struct ndis_80211_pmkid_cand_list *cand_list;
2968 int list_len, expected_len, i;
2969
2970 if (len < offsetof(struct ndis_80211_status_indication, u) +
2971 sizeof(struct ndis_80211_pmkid_cand_list)) {
2972 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2973 len);
2974 return;
2975 }
2976
2977 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2978 sizeof(struct ndis_80211_pmkid_candidate);
2979 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2980 offsetof(struct ndis_80211_status_indication, u);
2981
2982 if (len < expected_len) {
2983 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2984 len, expected_len);
2985 return;
2986 }
2987
2988 cand_list = &indication->u.cand_list;
2989
2990 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2991 le32_to_cpu(cand_list->version),
2992 le32_to_cpu(cand_list->num_candidates));
2993
2994 if (le32_to_cpu(cand_list->version) != 1)
2995 return;
2996
2997 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2998 struct ndis_80211_pmkid_candidate *cand =
2999 &cand_list->candidate_list[i];
3000
3001 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
3002 i, le32_to_cpu(cand->flags), cand->bssid);
3003
3004#if 0
3005 struct iw_pmkid_cand pcand;
3006 union iwreq_data wrqu;
3007
3008 memset(&pcand, 0, sizeof(pcand));
3009 if (le32_to_cpu(cand->flags) & 0x01)
3010 pcand.flags |= IW_PMKID_CAND_PREAUTH;
3011 pcand.index = i;
3012 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
3013
3014 memset(&wrqu, 0, sizeof(wrqu));
3015 wrqu.data.length = sizeof(pcand);
3016 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
3017 (u8 *)&pcand);
3018#endif
3019 }
3020}
3021
3022static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3023 struct rndis_indicate *msg, int buflen)
3024{
3025 struct ndis_80211_status_indication *indication;
3026 int len, offset;
3027
3028 offset = offsetof(struct rndis_indicate, status) +
3029 le32_to_cpu(msg->offset);
3030 len = le32_to_cpu(msg->length);
3031
3032 if (len < 8) {
3033 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3034 len);
3035 return;
3036 }
3037
3038 if (offset + len > buflen) {
3039 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3040 offset + len, buflen);
3041 return;
3042 }
3043
3044 indication = (void *)((u8 *)msg + offset);
3045
3046 switch (le32_to_cpu(indication->status_type)) {
3047 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3048 netdev_info(usbdev->net, "radio state indication: %i\n",
3049 le32_to_cpu(indication->u.radio_status));
3050 return;
3051
3052 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3053 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3054 le32_to_cpu(indication->u.media_stream_mode));
3055 return;
3056
3057 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3058 rndis_wlan_auth_indication(usbdev, indication, len);
3059 return;
3060
3061 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3062 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3063 return;
3064
3065 default:
3066 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3067 le32_to_cpu(indication->status_type));
3068 }
3069}
3070
3071static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3072{
3073 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3074 struct rndis_indicate *msg = ind;
3075
3076 switch (msg->status) {
3077 case RNDIS_STATUS_MEDIA_CONNECT:
3078 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
3079 /* OID_802_11_ADD_KEY causes sometimes extra
3080 * "media connect" indications which confuses driver
3081 * and userspace to think that device is
3082 * roaming/reassociating when it isn't.
3083 */
3084 netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
3085 return;
3086 }
3087
3088 usbnet_pause_rx(usbdev);
3089
3090 netdev_info(usbdev->net, "media connect\n");
3091
3092 /* queue work to avoid recursive calls into rndis_command */
3093 set_bit(WORK_LINK_UP, &priv->work_pending);
3094 queue_work(priv->workqueue, &priv->work);
3095 break;
3096
3097 case RNDIS_STATUS_MEDIA_DISCONNECT:
3098 netdev_info(usbdev->net, "media disconnect\n");
3099
3100 /* queue work to avoid recursive calls into rndis_command */
3101 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3102 queue_work(priv->workqueue, &priv->work);
3103 break;
3104
3105 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3106 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3107 break;
3108
3109 default:
3110 netdev_info(usbdev->net, "indication: 0x%08x\n",
3111 le32_to_cpu(msg->status));
3112 break;
3113 }
3114}
3115
3116static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3117{
3118 struct {
3119 __le32 num_items;
3120 __le32 items[8];
3121 } networks_supported;
3122 struct ndis_80211_capability *caps;
3123 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3124 int len, retval, i, n;
3125 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3126
3127 /* determine supported modes */
3128 len = sizeof(networks_supported);
3129 retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
3130 &networks_supported, &len);
3131 if (retval >= 0) {
3132 n = le32_to_cpu(networks_supported.num_items);
3133 if (n > 8)
3134 n = 8;
3135 for (i = 0; i < n; i++) {
3136 switch (le32_to_cpu(networks_supported.items[i])) {
3137 case NDIS_80211_TYPE_FREQ_HOP:
3138 case NDIS_80211_TYPE_DIRECT_SEQ:
3139 priv->caps |= CAP_MODE_80211B;
3140 break;
3141 case NDIS_80211_TYPE_OFDM_A:
3142 priv->caps |= CAP_MODE_80211A;
3143 break;
3144 case NDIS_80211_TYPE_OFDM_G:
3145 priv->caps |= CAP_MODE_80211G;
3146 break;
3147 }
3148 }
3149 }
3150
3151 /* get device 802.11 capabilities, number of PMKIDs */
3152 caps = (struct ndis_80211_capability *)caps_buf;
3153 len = sizeof(caps_buf);
3154 retval = rndis_query_oid(usbdev, OID_802_11_CAPABILITY, caps, &len);
3155 if (retval >= 0) {
3156 netdev_dbg(usbdev->net, "OID_802_11_CAPABILITY -> len %d, "
3157 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3158 le32_to_cpu(caps->length),
3159 le32_to_cpu(caps->version),
3160 le32_to_cpu(caps->num_pmkids),
3161 le32_to_cpu(caps->num_auth_encr_pair));
3162 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3163 } else
3164 wiphy->max_num_pmkids = 0;
3165
3166 return retval;
3167}
3168
3169static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3170{
3171 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3172 enum nl80211_cqm_rssi_threshold_event event;
3173 int thold, hyst, last_event;
3174
3175 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3176 return;
3177 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3178 return;
3179
3180 last_event = priv->last_cqm_event_rssi;
3181 thold = priv->cqm_rssi_thold;
3182 hyst = priv->cqm_rssi_hyst;
3183
3184 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3185 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3186 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3187 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3188 else
3189 return;
3190
3191 priv->last_cqm_event_rssi = rssi;
3192 cfg80211_cqm_rssi_notify(usbdev->net, event, GFP_KERNEL);
3193}
3194
3195#define DEVICE_POLLER_JIFFIES (HZ)
3196static void rndis_device_poller(struct work_struct *work)
3197{
3198 struct rndis_wlan_private *priv =
3199 container_of(work, struct rndis_wlan_private,
3200 dev_poller_work.work);
3201 struct usbnet *usbdev = priv->usbdev;
3202 __le32 rssi, tmp;
3203 int len, ret, j;
3204 int update_jiffies = DEVICE_POLLER_JIFFIES;
3205 void *buf;
3206
3207 /* Only check/do workaround when connected. Calling is_associated()
3208 * also polls device with rndis_command() and catches for media link
3209 * indications.
3210 */
3211 if (!is_associated(usbdev)) {
3212 /* Workaround bad scanning in BCM4320a devices with active
3213 * background scanning when not associated.
3214 */
3215 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3216 !priv->scan_request) {
3217 /* Get previous scan results */
3218 rndis_check_bssid_list(usbdev, NULL, NULL);
3219
3220 /* Initiate new scan */
3221 rndis_start_bssid_list_scan(usbdev);
3222 }
3223
3224 goto end;
3225 }
3226
3227 len = sizeof(rssi);
3228 ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
3229 if (ret == 0) {
3230 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3231 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3232 }
3233
3234 netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3235 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3236
3237 /* Workaround transfer stalls on poor quality links.
3238 * TODO: find right way to fix these stalls (as stalls do not happen
3239 * with ndiswrapper/windows driver). */
3240 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3241 /* Decrease stats worker interval to catch stalls.
3242 * faster. Faster than 400-500ms causes packet loss,
3243 * Slower doesn't catch stalls fast enough.
3244 */
3245 j = msecs_to_jiffies(priv->param_workaround_interval);
3246 if (j > DEVICE_POLLER_JIFFIES)
3247 j = DEVICE_POLLER_JIFFIES;
3248 else if (j <= 0)
3249 j = 1;
3250 update_jiffies = j;
3251
3252 /* Send scan OID. Use of both OIDs is required to get device
3253 * working.
3254 */
3255 tmp = cpu_to_le32(1);
3256 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
3257 sizeof(tmp));
3258
3259 len = CONTROL_BUFFER_SIZE;
3260 buf = kmalloc(len, GFP_KERNEL);
3261 if (!buf)
3262 goto end;
3263
3264 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
3265 kfree(buf);
3266 }
3267
3268end:
3269 if (update_jiffies >= HZ)
3270 update_jiffies = round_jiffies_relative(update_jiffies);
3271 else {
3272 j = round_jiffies_relative(update_jiffies);
3273 if (abs(j - update_jiffies) <= 10)
3274 update_jiffies = j;
3275 }
3276
3277 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3278 update_jiffies);
3279}
3280
3281/*
3282 * driver/device initialization
3283 */
3284static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3285{
3286 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3287
3288 priv->device_type = device_type;
3289
3290 priv->param_country[0] = modparam_country[0];
3291 priv->param_country[1] = modparam_country[1];
3292 priv->param_country[2] = 0;
3293 priv->param_frameburst = modparam_frameburst;
3294 priv->param_afterburner = modparam_afterburner;
3295 priv->param_power_save = modparam_power_save;
3296 priv->param_power_output = modparam_power_output;
3297 priv->param_roamtrigger = modparam_roamtrigger;
3298 priv->param_roamdelta = modparam_roamdelta;
3299
3300 priv->param_country[0] = toupper(priv->param_country[0]);
3301 priv->param_country[1] = toupper(priv->param_country[1]);
3302 /* doesn't support EU as country code, use FI instead */
3303 if (!strcmp(priv->param_country, "EU"))
3304 strcpy(priv->param_country, "FI");
3305
3306 if (priv->param_power_save < 0)
3307 priv->param_power_save = 0;
3308 else if (priv->param_power_save > 2)
3309 priv->param_power_save = 2;
3310
3311 if (priv->param_power_output < 0)
3312 priv->param_power_output = 0;
3313 else if (priv->param_power_output > 3)
3314 priv->param_power_output = 3;
3315
3316 if (priv->param_roamtrigger < -80)
3317 priv->param_roamtrigger = -80;
3318 else if (priv->param_roamtrigger > -60)
3319 priv->param_roamtrigger = -60;
3320
3321 if (priv->param_roamdelta < 0)
3322 priv->param_roamdelta = 0;
3323 else if (priv->param_roamdelta > 2)
3324 priv->param_roamdelta = 2;
3325
3326 if (modparam_workaround_interval < 0)
3327 priv->param_workaround_interval = 500;
3328 else
3329 priv->param_workaround_interval = modparam_workaround_interval;
3330}
3331
3332static int unknown_early_init(struct usbnet *usbdev)
3333{
3334 /* copy module parameters for unknown so that iwconfig reports txpower
3335 * and workaround parameter is copied to private structure correctly.
3336 */
3337 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3338
3339 /* This is unknown device, so do not try set configuration parameters.
3340 */
3341
3342 return 0;
3343}
3344
3345static int bcm4320a_early_init(struct usbnet *usbdev)
3346{
3347 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3348 * and workaround parameter is copied to private structure correctly.
3349 */
3350 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3351
3352 /* bcm4320a doesn't handle configuration parameters well. Try
3353 * set any and you get partially zeroed mac and broken device.
3354 */
3355
3356 return 0;
3357}
3358
3359static int bcm4320b_early_init(struct usbnet *usbdev)
3360{
3361 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3362 char buf[8];
3363
3364 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3365
3366 /* Early initialization settings, setting these won't have effect
3367 * if called after generic_rndis_bind().
3368 */
3369
3370 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3371 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3372 priv->param_frameburst ? "1" : "0");
3373 rndis_set_config_parameter_str(usbdev, "Afterburner",
3374 priv->param_afterburner ? "1" : "0");
3375 sprintf(buf, "%d", priv->param_power_save);
3376 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3377 sprintf(buf, "%d", priv->param_power_output);
3378 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3379 sprintf(buf, "%d", priv->param_roamtrigger);
3380 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3381 sprintf(buf, "%d", priv->param_roamdelta);
3382 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3383
3384 return 0;
3385}
3386
3387/* same as rndis_netdev_ops but with local multicast handler */
3388static const struct net_device_ops rndis_wlan_netdev_ops = {
3389 .ndo_open = usbnet_open,
3390 .ndo_stop = usbnet_stop,
3391 .ndo_start_xmit = usbnet_start_xmit,
3392 .ndo_tx_timeout = usbnet_tx_timeout,
3393 .ndo_set_mac_address = eth_mac_addr,
3394 .ndo_validate_addr = eth_validate_addr,
3395 .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
3396};
3397
3398static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3399{
3400 struct wiphy *wiphy;
3401 struct rndis_wlan_private *priv;
3402 int retval, len;
3403 __le32 tmp;
3404
3405 /* allocate wiphy and rndis private data
3406 * NOTE: We only support a single virtual interface, so wiphy
3407 * and wireless_dev are somewhat synonymous for this device.
3408 */
3409 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3410 if (!wiphy)
3411 return -ENOMEM;
3412
3413 priv = wiphy_priv(wiphy);
3414 usbdev->net->ieee80211_ptr = &priv->wdev;
3415 priv->wdev.wiphy = wiphy;
3416 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3417
3418 /* These have to be initialized before calling generic_rndis_bind().
3419 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3420 */
3421 usbdev->driver_priv = priv;
3422 priv->usbdev = usbdev;
3423
3424 mutex_init(&priv->command_lock);
3425
3426 /* because rndis_command() sleeps we need to use workqueue */
3427 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3428 INIT_WORK(&priv->work, rndis_wlan_worker);
3429 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3430 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3431
3432 /* try bind rndis_host */
3433 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3434 if (retval < 0)
3435 goto fail;
3436
3437 /* generic_rndis_bind set packet filter to multicast_all+
3438 * promisc mode which doesn't work well for our devices (device
3439 * picks up rssi to closest station instead of to access point).
3440 *
3441 * rndis_host wants to avoid all OID as much as possible
3442 * so do promisc/multicast handling in rndis_wlan.
3443 */
3444 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3445
3446 tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
3447 retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
3448 sizeof(tmp));
3449
3450 len = sizeof(tmp);
3451 retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
3452 &len);
3453 priv->multicast_size = le32_to_cpu(tmp);
3454 if (retval < 0 || priv->multicast_size < 0)
3455 priv->multicast_size = 0;
3456 if (priv->multicast_size > 0)
3457 usbdev->net->flags |= IFF_MULTICAST;
3458 else
3459 usbdev->net->flags &= ~IFF_MULTICAST;
3460
3461 /* fill-out wiphy structure and register w/ cfg80211 */
3462 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3463 wiphy->privid = rndis_wiphy_privid;
3464 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3465 | BIT(NL80211_IFTYPE_ADHOC);
3466 wiphy->max_scan_ssids = 1;
3467
3468 /* TODO: fill-out band/encr information based on priv->caps */
3469 rndis_wlan_get_caps(usbdev, wiphy);
3470
3471 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3472 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3473 priv->band.channels = priv->channels;
3474 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3475 priv->band.bitrates = priv->rates;
3476 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3477 wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
3478 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3479
3480 memcpy(priv->cipher_suites, rndis_cipher_suites,
3481 sizeof(rndis_cipher_suites));
3482 wiphy->cipher_suites = priv->cipher_suites;
3483 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3484
3485 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3486
3487 if (wiphy_register(wiphy)) {
3488 retval = -ENODEV;
3489 goto fail;
3490 }
3491
3492 set_default_iw_params(usbdev);
3493
3494 priv->power_mode = -1;
3495
3496 /* set default rts/frag */
3497 rndis_set_wiphy_params(wiphy,
3498 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3499
3500 /* turn radio off on init */
3501 priv->radio_on = false;
3502 disassociate(usbdev, false);
3503 netif_carrier_off(usbdev->net);
3504
3505 return 0;
3506
3507fail:
3508 cancel_delayed_work_sync(&priv->dev_poller_work);
3509 cancel_delayed_work_sync(&priv->scan_work);
3510 cancel_work_sync(&priv->work);
3511 flush_workqueue(priv->workqueue);
3512 destroy_workqueue(priv->workqueue);
3513
3514 wiphy_free(wiphy);
3515 return retval;
3516}
3517
3518static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3519{
3520 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3521
3522 /* turn radio off */
3523 disassociate(usbdev, false);
3524
3525 cancel_delayed_work_sync(&priv->dev_poller_work);
3526 cancel_delayed_work_sync(&priv->scan_work);
3527 cancel_work_sync(&priv->work);
3528 flush_workqueue(priv->workqueue);
3529 destroy_workqueue(priv->workqueue);
3530
3531 rndis_unbind(usbdev, intf);
3532
3533 wiphy_unregister(priv->wdev.wiphy);
3534 wiphy_free(priv->wdev.wiphy);
3535}
3536
3537static int rndis_wlan_reset(struct usbnet *usbdev)
3538{
3539 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3540 int retval;
3541
3542 netdev_dbg(usbdev->net, "%s()\n", __func__);
3543
3544 retval = rndis_reset(usbdev);
3545 if (retval)
3546 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3547
3548 /* rndis_reset cleared multicast list, so restore here.
3549 (set_multicast_list() also turns on current packet filter) */
3550 set_multicast_list(usbdev);
3551
3552 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3553 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3554
3555 return deauthenticate(usbdev);
3556}
3557
3558static int rndis_wlan_stop(struct usbnet *usbdev)
3559{
3560 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3561 int retval;
3562 __le32 filter;
3563
3564 netdev_dbg(usbdev->net, "%s()\n", __func__);
3565
3566 retval = disassociate(usbdev, false);
3567
3568 priv->work_pending = 0;
3569 cancel_delayed_work_sync(&priv->dev_poller_work);
3570 cancel_delayed_work_sync(&priv->scan_work);
3571 cancel_work_sync(&priv->work);
3572 flush_workqueue(priv->workqueue);
3573
3574 if (priv->scan_request) {
3575 cfg80211_scan_done(priv->scan_request, true);
3576 priv->scan_request = NULL;
3577 }
3578
3579 /* Set current packet filter zero to block receiving data packets from
3580 device. */
3581 filter = 0;
3582 rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
3583 sizeof(filter));
3584
3585 return retval;
3586}
3587
3588static const struct driver_info bcm4320b_info = {
3589 .description = "Wireless RNDIS device, BCM4320b based",
3590 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3591 FLAG_AVOID_UNLINK_URBS,
3592 .bind = rndis_wlan_bind,
3593 .unbind = rndis_wlan_unbind,
3594 .status = rndis_status,
3595 .rx_fixup = rndis_rx_fixup,
3596 .tx_fixup = rndis_tx_fixup,
3597 .reset = rndis_wlan_reset,
3598 .stop = rndis_wlan_stop,
3599 .early_init = bcm4320b_early_init,
3600 .indication = rndis_wlan_indication,
3601};
3602
3603static const struct driver_info bcm4320a_info = {
3604 .description = "Wireless RNDIS device, BCM4320a based",
3605 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3606 FLAG_AVOID_UNLINK_URBS,
3607 .bind = rndis_wlan_bind,
3608 .unbind = rndis_wlan_unbind,
3609 .status = rndis_status,
3610 .rx_fixup = rndis_rx_fixup,
3611 .tx_fixup = rndis_tx_fixup,
3612 .reset = rndis_wlan_reset,
3613 .stop = rndis_wlan_stop,
3614 .early_init = bcm4320a_early_init,
3615 .indication = rndis_wlan_indication,
3616};
3617
3618static const struct driver_info rndis_wlan_info = {
3619 .description = "Wireless RNDIS device",
3620 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3621 FLAG_AVOID_UNLINK_URBS,
3622 .bind = rndis_wlan_bind,
3623 .unbind = rndis_wlan_unbind,
3624 .status = rndis_status,
3625 .rx_fixup = rndis_rx_fixup,
3626 .tx_fixup = rndis_tx_fixup,
3627 .reset = rndis_wlan_reset,
3628 .stop = rndis_wlan_stop,
3629 .early_init = unknown_early_init,
3630 .indication = rndis_wlan_indication,
3631};
3632
3633/*-------------------------------------------------------------------------*/
3634
3635static const struct usb_device_id products [] = {
3636#define RNDIS_MASTER_INTERFACE \
3637 .bInterfaceClass = USB_CLASS_COMM, \
3638 .bInterfaceSubClass = 2 /* ACM */, \
3639 .bInterfaceProtocol = 0x0ff
3640
3641/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3642 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3643 */
3644{
3645 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3646 | USB_DEVICE_ID_MATCH_DEVICE,
3647 .idVendor = 0x0411,
3648 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3649 RNDIS_MASTER_INTERFACE,
3650 .driver_info = (unsigned long) &bcm4320b_info,
3651}, {
3652 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3653 | USB_DEVICE_ID_MATCH_DEVICE,
3654 .idVendor = 0x0baf,
3655 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3656 RNDIS_MASTER_INTERFACE,
3657 .driver_info = (unsigned long) &bcm4320b_info,
3658}, {
3659 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3660 | USB_DEVICE_ID_MATCH_DEVICE,
3661 .idVendor = 0x050d,
3662 .idProduct = 0x011b, /* Belkin F5D7051 */
3663 RNDIS_MASTER_INTERFACE,
3664 .driver_info = (unsigned long) &bcm4320b_info,
3665}, {
3666 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3667 | USB_DEVICE_ID_MATCH_DEVICE,
3668 .idVendor = 0x1799, /* Belkin has two vendor ids */
3669 .idProduct = 0x011b, /* Belkin F5D7051 */
3670 RNDIS_MASTER_INTERFACE,
3671 .driver_info = (unsigned long) &bcm4320b_info,
3672}, {
3673 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3674 | USB_DEVICE_ID_MATCH_DEVICE,
3675 .idVendor = 0x13b1,
3676 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3677 RNDIS_MASTER_INTERFACE,
3678 .driver_info = (unsigned long) &bcm4320b_info,
3679}, {
3680 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3681 | USB_DEVICE_ID_MATCH_DEVICE,
3682 .idVendor = 0x13b1,
3683 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3684 RNDIS_MASTER_INTERFACE,
3685 .driver_info = (unsigned long) &bcm4320b_info,
3686}, {
3687 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3688 | USB_DEVICE_ID_MATCH_DEVICE,
3689 .idVendor = 0x0b05,
3690 .idProduct = 0x1717, /* Asus WL169gE */
3691 RNDIS_MASTER_INTERFACE,
3692 .driver_info = (unsigned long) &bcm4320b_info,
3693}, {
3694 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3695 | USB_DEVICE_ID_MATCH_DEVICE,
3696 .idVendor = 0x0a5c,
3697 .idProduct = 0xd11b, /* Eminent EM4045 */
3698 RNDIS_MASTER_INTERFACE,
3699 .driver_info = (unsigned long) &bcm4320b_info,
3700}, {
3701 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3702 | USB_DEVICE_ID_MATCH_DEVICE,
3703 .idVendor = 0x1690,
3704 .idProduct = 0x0715, /* BT Voyager 1055 */
3705 RNDIS_MASTER_INTERFACE,
3706 .driver_info = (unsigned long) &bcm4320b_info,
3707},
3708/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3709 * parameters available, hardware probably contain older firmware version with
3710 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3711 */
3712{
3713 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3714 | USB_DEVICE_ID_MATCH_DEVICE,
3715 .idVendor = 0x13b1,
3716 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3717 RNDIS_MASTER_INTERFACE,
3718 .driver_info = (unsigned long) &bcm4320a_info,
3719}, {
3720 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3721 | USB_DEVICE_ID_MATCH_DEVICE,
3722 .idVendor = 0x0baf,
3723 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3724 RNDIS_MASTER_INTERFACE,
3725 .driver_info = (unsigned long) &bcm4320a_info,
3726}, {
3727 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3728 | USB_DEVICE_ID_MATCH_DEVICE,
3729 .idVendor = 0x0411,
3730 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3731 RNDIS_MASTER_INTERFACE,
3732 .driver_info = (unsigned long) &bcm4320a_info,
3733},
3734/* Generic Wireless RNDIS devices that we don't have exact
3735 * idVendor/idProduct/chip yet.
3736 */
3737{
3738 /* RNDIS is MSFT's un-official variant of CDC ACM */
3739 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3740 .driver_info = (unsigned long) &rndis_wlan_info,
3741}, {
3742 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3743 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3744 .driver_info = (unsigned long) &rndis_wlan_info,
3745},
3746 { }, // END
3747};
3748MODULE_DEVICE_TABLE(usb, products);
3749
3750static struct usb_driver rndis_wlan_driver = {
3751 .name = "rndis_wlan",
3752 .id_table = products,
3753 .probe = usbnet_probe,
3754 .disconnect = usbnet_disconnect,
3755 .suspend = usbnet_suspend,
3756 .resume = usbnet_resume,
3757};
3758
3759static int __init rndis_wlan_init(void)
3760{
3761 return usb_register(&rndis_wlan_driver);
3762}
3763module_init(rndis_wlan_init);
3764
3765static void __exit rndis_wlan_exit(void)
3766{
3767 usb_deregister(&rndis_wlan_driver);
3768}
3769module_exit(rndis_wlan_exit);
3770
3771MODULE_AUTHOR("Bjorge Dijkstra");
3772MODULE_AUTHOR("Jussi Kivilinna");
3773MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3774MODULE_LICENSE("GPL");
3775
1/*
2 * Driver for RNDIS based wireless USB devices.
3 *
4 * Copyright (C) 2007 by Bjorge Dijkstra <bjd@jooz.net>
5 * Copyright (C) 2008-2009 by Jussi Kivilinna <jussi.kivilinna@iki.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, see <http://www.gnu.org/licenses/>.
19 *
20 * Portions of this file are based on NDISwrapper project,
21 * Copyright (C) 2003-2005 Pontus Fuchs, Giridhar Pemmasani
22 * http://ndiswrapper.sourceforge.net/
23 */
24
25// #define DEBUG // error path messages, extra info
26// #define VERBOSE // more; success messages
27
28#include <linux/module.h>
29#include <linux/netdevice.h>
30#include <linux/etherdevice.h>
31#include <linux/ethtool.h>
32#include <linux/workqueue.h>
33#include <linux/mutex.h>
34#include <linux/mii.h>
35#include <linux/usb.h>
36#include <linux/usb/cdc.h>
37#include <linux/ieee80211.h>
38#include <linux/if_arp.h>
39#include <linux/ctype.h>
40#include <linux/spinlock.h>
41#include <linux/slab.h>
42#include <net/cfg80211.h>
43#include <linux/usb/usbnet.h>
44#include <linux/usb/rndis_host.h>
45
46
47/* NOTE: All these are settings for Broadcom chipset */
48static char modparam_country[4] = "EU";
49module_param_string(country, modparam_country, 4, 0444);
50MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
51
52static int modparam_frameburst = 1;
53module_param_named(frameburst, modparam_frameburst, int, 0444);
54MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
55
56static int modparam_afterburner = 0;
57module_param_named(afterburner, modparam_afterburner, int, 0444);
58MODULE_PARM_DESC(afterburner,
59 "enable afterburner aka '125 High Speed Mode' (default: off)");
60
61static int modparam_power_save = 0;
62module_param_named(power_save, modparam_power_save, int, 0444);
63MODULE_PARM_DESC(power_save,
64 "set power save mode: 0=off, 1=on, 2=fast (default: off)");
65
66static int modparam_power_output = 3;
67module_param_named(power_output, modparam_power_output, int, 0444);
68MODULE_PARM_DESC(power_output,
69 "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
70
71static int modparam_roamtrigger = -70;
72module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
73MODULE_PARM_DESC(roamtrigger,
74 "set roaming dBm trigger: -80=optimize for distance, "
75 "-60=bandwidth (default: -70)");
76
77static int modparam_roamdelta = 1;
78module_param_named(roamdelta, modparam_roamdelta, int, 0444);
79MODULE_PARM_DESC(roamdelta,
80 "set roaming tendency: 0=aggressive, 1=moderate, "
81 "2=conservative (default: moderate)");
82
83static int modparam_workaround_interval;
84module_param_named(workaround_interval, modparam_workaround_interval,
85 int, 0444);
86MODULE_PARM_DESC(workaround_interval,
87 "set stall workaround interval in msecs (0=disabled) (default: 0)");
88
89/* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
90#define WL_NOISE -96 /* typical noise level in dBm */
91#define WL_SIGMAX -32 /* typical maximum signal level in dBm */
92
93
94/* Assume that Broadcom 4320 (only chipset at time of writing known to be
95 * based on wireless rndis) has default txpower of 13dBm.
96 * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
97 * 100% : 20 mW ~ 13dBm
98 * 75% : 15 mW ~ 12dBm
99 * 50% : 10 mW ~ 10dBm
100 * 25% : 5 mW ~ 7dBm
101 */
102#define BCM4320_DEFAULT_TXPOWER_DBM_100 13
103#define BCM4320_DEFAULT_TXPOWER_DBM_75 12
104#define BCM4320_DEFAULT_TXPOWER_DBM_50 10
105#define BCM4320_DEFAULT_TXPOWER_DBM_25 7
106
107/* Known device types */
108#define RNDIS_UNKNOWN 0
109#define RNDIS_BCM4320A 1
110#define RNDIS_BCM4320B 2
111
112
113/* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
114 * slightly modified for datatype endianess, etc
115 */
116#define NDIS_802_11_LENGTH_SSID 32
117#define NDIS_802_11_LENGTH_RATES 8
118#define NDIS_802_11_LENGTH_RATES_EX 16
119
120enum ndis_80211_net_type {
121 NDIS_80211_TYPE_FREQ_HOP,
122 NDIS_80211_TYPE_DIRECT_SEQ,
123 NDIS_80211_TYPE_OFDM_A,
124 NDIS_80211_TYPE_OFDM_G
125};
126
127enum ndis_80211_net_infra {
128 NDIS_80211_INFRA_ADHOC,
129 NDIS_80211_INFRA_INFRA,
130 NDIS_80211_INFRA_AUTO_UNKNOWN
131};
132
133enum ndis_80211_auth_mode {
134 NDIS_80211_AUTH_OPEN,
135 NDIS_80211_AUTH_SHARED,
136 NDIS_80211_AUTH_AUTO_SWITCH,
137 NDIS_80211_AUTH_WPA,
138 NDIS_80211_AUTH_WPA_PSK,
139 NDIS_80211_AUTH_WPA_NONE,
140 NDIS_80211_AUTH_WPA2,
141 NDIS_80211_AUTH_WPA2_PSK
142};
143
144enum ndis_80211_encr_status {
145 NDIS_80211_ENCR_WEP_ENABLED,
146 NDIS_80211_ENCR_DISABLED,
147 NDIS_80211_ENCR_WEP_KEY_ABSENT,
148 NDIS_80211_ENCR_NOT_SUPPORTED,
149 NDIS_80211_ENCR_TKIP_ENABLED,
150 NDIS_80211_ENCR_TKIP_KEY_ABSENT,
151 NDIS_80211_ENCR_CCMP_ENABLED,
152 NDIS_80211_ENCR_CCMP_KEY_ABSENT
153};
154
155enum ndis_80211_priv_filter {
156 NDIS_80211_PRIV_ACCEPT_ALL,
157 NDIS_80211_PRIV_8021X_WEP
158};
159
160enum ndis_80211_status_type {
161 NDIS_80211_STATUSTYPE_AUTHENTICATION,
162 NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
163 NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
164 NDIS_80211_STATUSTYPE_RADIOSTATE,
165};
166
167enum ndis_80211_media_stream_mode {
168 NDIS_80211_MEDIA_STREAM_OFF,
169 NDIS_80211_MEDIA_STREAM_ON
170};
171
172enum ndis_80211_radio_status {
173 NDIS_80211_RADIO_STATUS_ON,
174 NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
175 NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
176};
177
178enum ndis_80211_addkey_bits {
179 NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
180 NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
181 NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
182 NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
183};
184
185enum ndis_80211_addwep_bits {
186 NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
187 NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
188};
189
190enum ndis_80211_power_mode {
191 NDIS_80211_POWER_MODE_CAM,
192 NDIS_80211_POWER_MODE_MAX_PSP,
193 NDIS_80211_POWER_MODE_FAST_PSP,
194};
195
196enum ndis_80211_pmkid_cand_list_flag_bits {
197 NDIS_80211_PMKID_CAND_PREAUTH = cpu_to_le32(1 << 0)
198};
199
200struct ndis_80211_auth_request {
201 __le32 length;
202 u8 bssid[ETH_ALEN];
203 u8 padding[2];
204 __le32 flags;
205} __packed;
206
207struct ndis_80211_pmkid_candidate {
208 u8 bssid[ETH_ALEN];
209 u8 padding[2];
210 __le32 flags;
211} __packed;
212
213struct ndis_80211_pmkid_cand_list {
214 __le32 version;
215 __le32 num_candidates;
216 struct ndis_80211_pmkid_candidate candidate_list[0];
217} __packed;
218
219struct ndis_80211_status_indication {
220 __le32 status_type;
221 union {
222 __le32 media_stream_mode;
223 __le32 radio_status;
224 struct ndis_80211_auth_request auth_request[0];
225 struct ndis_80211_pmkid_cand_list cand_list;
226 } u;
227} __packed;
228
229struct ndis_80211_ssid {
230 __le32 length;
231 u8 essid[NDIS_802_11_LENGTH_SSID];
232} __packed;
233
234struct ndis_80211_conf_freq_hop {
235 __le32 length;
236 __le32 hop_pattern;
237 __le32 hop_set;
238 __le32 dwell_time;
239} __packed;
240
241struct ndis_80211_conf {
242 __le32 length;
243 __le32 beacon_period;
244 __le32 atim_window;
245 __le32 ds_config;
246 struct ndis_80211_conf_freq_hop fh_config;
247} __packed;
248
249struct ndis_80211_bssid_ex {
250 __le32 length;
251 u8 mac[ETH_ALEN];
252 u8 padding[2];
253 struct ndis_80211_ssid ssid;
254 __le32 privacy;
255 __le32 rssi;
256 __le32 net_type;
257 struct ndis_80211_conf config;
258 __le32 net_infra;
259 u8 rates[NDIS_802_11_LENGTH_RATES_EX];
260 __le32 ie_length;
261 u8 ies[0];
262} __packed;
263
264struct ndis_80211_bssid_list_ex {
265 __le32 num_items;
266 struct ndis_80211_bssid_ex bssid[0];
267} __packed;
268
269struct ndis_80211_fixed_ies {
270 u8 timestamp[8];
271 __le16 beacon_interval;
272 __le16 capabilities;
273} __packed;
274
275struct ndis_80211_wep_key {
276 __le32 size;
277 __le32 index;
278 __le32 length;
279 u8 material[32];
280} __packed;
281
282struct ndis_80211_key {
283 __le32 size;
284 __le32 index;
285 __le32 length;
286 u8 bssid[ETH_ALEN];
287 u8 padding[6];
288 u8 rsc[8];
289 u8 material[32];
290} __packed;
291
292struct ndis_80211_remove_key {
293 __le32 size;
294 __le32 index;
295 u8 bssid[ETH_ALEN];
296 u8 padding[2];
297} __packed;
298
299struct ndis_config_param {
300 __le32 name_offs;
301 __le32 name_length;
302 __le32 type;
303 __le32 value_offs;
304 __le32 value_length;
305} __packed;
306
307struct ndis_80211_assoc_info {
308 __le32 length;
309 __le16 req_ies;
310 struct req_ie {
311 __le16 capa;
312 __le16 listen_interval;
313 u8 cur_ap_address[ETH_ALEN];
314 } req_ie;
315 __le32 req_ie_length;
316 __le32 offset_req_ies;
317 __le16 resp_ies;
318 struct resp_ie {
319 __le16 capa;
320 __le16 status_code;
321 __le16 assoc_id;
322 } resp_ie;
323 __le32 resp_ie_length;
324 __le32 offset_resp_ies;
325} __packed;
326
327struct ndis_80211_auth_encr_pair {
328 __le32 auth_mode;
329 __le32 encr_mode;
330} __packed;
331
332struct ndis_80211_capability {
333 __le32 length;
334 __le32 version;
335 __le32 num_pmkids;
336 __le32 num_auth_encr_pair;
337 struct ndis_80211_auth_encr_pair auth_encr_pair[0];
338} __packed;
339
340struct ndis_80211_bssid_info {
341 u8 bssid[ETH_ALEN];
342 u8 pmkid[16];
343} __packed;
344
345struct ndis_80211_pmkid {
346 __le32 length;
347 __le32 bssid_info_count;
348 struct ndis_80211_bssid_info bssid_info[0];
349} __packed;
350
351/*
352 * private data
353 */
354#define CAP_MODE_80211A 1
355#define CAP_MODE_80211B 2
356#define CAP_MODE_80211G 4
357#define CAP_MODE_MASK 7
358
359#define WORK_LINK_UP 0
360#define WORK_LINK_DOWN 1
361#define WORK_SET_MULTICAST_LIST 2
362
363#define RNDIS_WLAN_ALG_NONE 0
364#define RNDIS_WLAN_ALG_WEP (1<<0)
365#define RNDIS_WLAN_ALG_TKIP (1<<1)
366#define RNDIS_WLAN_ALG_CCMP (1<<2)
367
368#define RNDIS_WLAN_NUM_KEYS 4
369#define RNDIS_WLAN_KEY_MGMT_NONE 0
370#define RNDIS_WLAN_KEY_MGMT_802_1X (1<<0)
371#define RNDIS_WLAN_KEY_MGMT_PSK (1<<1)
372
373#define COMMAND_BUFFER_SIZE (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
374
375static const struct ieee80211_channel rndis_channels[] = {
376 { .center_freq = 2412 },
377 { .center_freq = 2417 },
378 { .center_freq = 2422 },
379 { .center_freq = 2427 },
380 { .center_freq = 2432 },
381 { .center_freq = 2437 },
382 { .center_freq = 2442 },
383 { .center_freq = 2447 },
384 { .center_freq = 2452 },
385 { .center_freq = 2457 },
386 { .center_freq = 2462 },
387 { .center_freq = 2467 },
388 { .center_freq = 2472 },
389 { .center_freq = 2484 },
390};
391
392static const struct ieee80211_rate rndis_rates[] = {
393 { .bitrate = 10 },
394 { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
395 { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
396 { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
397 { .bitrate = 60 },
398 { .bitrate = 90 },
399 { .bitrate = 120 },
400 { .bitrate = 180 },
401 { .bitrate = 240 },
402 { .bitrate = 360 },
403 { .bitrate = 480 },
404 { .bitrate = 540 }
405};
406
407static const u32 rndis_cipher_suites[] = {
408 WLAN_CIPHER_SUITE_WEP40,
409 WLAN_CIPHER_SUITE_WEP104,
410 WLAN_CIPHER_SUITE_TKIP,
411 WLAN_CIPHER_SUITE_CCMP,
412};
413
414struct rndis_wlan_encr_key {
415 int len;
416 u32 cipher;
417 u8 material[32];
418 u8 bssid[ETH_ALEN];
419 bool pairwise;
420 bool tx_key;
421};
422
423/* RNDIS device private data */
424struct rndis_wlan_private {
425 struct usbnet *usbdev;
426
427 struct wireless_dev wdev;
428
429 struct cfg80211_scan_request *scan_request;
430
431 struct workqueue_struct *workqueue;
432 struct delayed_work dev_poller_work;
433 struct delayed_work scan_work;
434 struct work_struct work;
435 struct mutex command_lock;
436 unsigned long work_pending;
437 int last_qual;
438 s32 cqm_rssi_thold;
439 u32 cqm_rssi_hyst;
440 int last_cqm_event_rssi;
441
442 struct ieee80211_supported_band band;
443 struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
444 struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
445 u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
446
447 int device_type;
448 int caps;
449 int multicast_size;
450
451 /* module parameters */
452 char param_country[4];
453 int param_frameburst;
454 int param_afterburner;
455 int param_power_save;
456 int param_power_output;
457 int param_roamtrigger;
458 int param_roamdelta;
459 u32 param_workaround_interval;
460
461 /* hardware state */
462 bool radio_on;
463 int power_mode;
464 int infra_mode;
465 bool connected;
466 u8 bssid[ETH_ALEN];
467 u32 current_command_oid;
468
469 /* encryption stuff */
470 u8 encr_tx_key_index;
471 struct rndis_wlan_encr_key encr_keys[RNDIS_WLAN_NUM_KEYS];
472 int wpa_version;
473
474 u8 command_buffer[COMMAND_BUFFER_SIZE];
475};
476
477/*
478 * cfg80211 ops
479 */
480static int rndis_change_virtual_intf(struct wiphy *wiphy,
481 struct net_device *dev,
482 enum nl80211_iftype type,
483 struct vif_params *params);
484
485static int rndis_scan(struct wiphy *wiphy,
486 struct cfg80211_scan_request *request);
487
488static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
489
490static int rndis_set_tx_power(struct wiphy *wiphy,
491 struct wireless_dev *wdev,
492 enum nl80211_tx_power_setting type,
493 int mbm);
494static int rndis_get_tx_power(struct wiphy *wiphy,
495 struct wireless_dev *wdev,
496 int *dbm);
497
498static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
499 struct cfg80211_connect_params *sme);
500
501static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
502 u16 reason_code);
503
504static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
505 struct cfg80211_ibss_params *params);
506
507static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
508
509static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
510 u8 key_index, bool pairwise, const u8 *mac_addr,
511 struct key_params *params);
512
513static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
514 u8 key_index, bool pairwise, const u8 *mac_addr);
515
516static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
517 u8 key_index, bool unicast, bool multicast);
518
519static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
520 const u8 *mac, struct station_info *sinfo);
521
522static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
523 int idx, u8 *mac, struct station_info *sinfo);
524
525static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
526 struct cfg80211_pmksa *pmksa);
527
528static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
529 struct cfg80211_pmksa *pmksa);
530
531static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev);
532
533static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
534 bool enabled, int timeout);
535
536static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
537 struct net_device *dev,
538 s32 rssi_thold, u32 rssi_hyst);
539
540static const struct cfg80211_ops rndis_config_ops = {
541 .change_virtual_intf = rndis_change_virtual_intf,
542 .scan = rndis_scan,
543 .set_wiphy_params = rndis_set_wiphy_params,
544 .set_tx_power = rndis_set_tx_power,
545 .get_tx_power = rndis_get_tx_power,
546 .connect = rndis_connect,
547 .disconnect = rndis_disconnect,
548 .join_ibss = rndis_join_ibss,
549 .leave_ibss = rndis_leave_ibss,
550 .add_key = rndis_add_key,
551 .del_key = rndis_del_key,
552 .set_default_key = rndis_set_default_key,
553 .get_station = rndis_get_station,
554 .dump_station = rndis_dump_station,
555 .set_pmksa = rndis_set_pmksa,
556 .del_pmksa = rndis_del_pmksa,
557 .flush_pmksa = rndis_flush_pmksa,
558 .set_power_mgmt = rndis_set_power_mgmt,
559 .set_cqm_rssi_config = rndis_set_cqm_rssi_config,
560};
561
562static void *rndis_wiphy_privid = &rndis_wiphy_privid;
563
564
565static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
566{
567 return (struct rndis_wlan_private *)dev->driver_priv;
568}
569
570static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
571{
572 switch (priv->param_power_output) {
573 default:
574 case 3:
575 return BCM4320_DEFAULT_TXPOWER_DBM_100;
576 case 2:
577 return BCM4320_DEFAULT_TXPOWER_DBM_75;
578 case 1:
579 return BCM4320_DEFAULT_TXPOWER_DBM_50;
580 case 0:
581 return BCM4320_DEFAULT_TXPOWER_DBM_25;
582 }
583}
584
585static bool is_wpa_key(struct rndis_wlan_private *priv, u8 idx)
586{
587 int cipher = priv->encr_keys[idx].cipher;
588
589 return (cipher == WLAN_CIPHER_SUITE_CCMP ||
590 cipher == WLAN_CIPHER_SUITE_TKIP);
591}
592
593static int rndis_cipher_to_alg(u32 cipher)
594{
595 switch (cipher) {
596 default:
597 return RNDIS_WLAN_ALG_NONE;
598 case WLAN_CIPHER_SUITE_WEP40:
599 case WLAN_CIPHER_SUITE_WEP104:
600 return RNDIS_WLAN_ALG_WEP;
601 case WLAN_CIPHER_SUITE_TKIP:
602 return RNDIS_WLAN_ALG_TKIP;
603 case WLAN_CIPHER_SUITE_CCMP:
604 return RNDIS_WLAN_ALG_CCMP;
605 }
606}
607
608static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
609{
610 switch (akm_suite) {
611 default:
612 return RNDIS_WLAN_KEY_MGMT_NONE;
613 case WLAN_AKM_SUITE_8021X:
614 return RNDIS_WLAN_KEY_MGMT_802_1X;
615 case WLAN_AKM_SUITE_PSK:
616 return RNDIS_WLAN_KEY_MGMT_PSK;
617 }
618}
619
620#ifdef DEBUG
621static const char *oid_to_string(u32 oid)
622{
623 switch (oid) {
624#define OID_STR(oid) case oid: return(#oid)
625 /* from rndis_host.h */
626 OID_STR(RNDIS_OID_802_3_PERMANENT_ADDRESS);
627 OID_STR(RNDIS_OID_GEN_MAXIMUM_FRAME_SIZE);
628 OID_STR(RNDIS_OID_GEN_CURRENT_PACKET_FILTER);
629 OID_STR(RNDIS_OID_GEN_PHYSICAL_MEDIUM);
630
631 /* from rndis_wlan.c */
632 OID_STR(RNDIS_OID_GEN_LINK_SPEED);
633 OID_STR(RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER);
634
635 OID_STR(RNDIS_OID_GEN_XMIT_OK);
636 OID_STR(RNDIS_OID_GEN_RCV_OK);
637 OID_STR(RNDIS_OID_GEN_XMIT_ERROR);
638 OID_STR(RNDIS_OID_GEN_RCV_ERROR);
639 OID_STR(RNDIS_OID_GEN_RCV_NO_BUFFER);
640
641 OID_STR(RNDIS_OID_802_3_CURRENT_ADDRESS);
642 OID_STR(RNDIS_OID_802_3_MULTICAST_LIST);
643 OID_STR(RNDIS_OID_802_3_MAXIMUM_LIST_SIZE);
644
645 OID_STR(RNDIS_OID_802_11_BSSID);
646 OID_STR(RNDIS_OID_802_11_SSID);
647 OID_STR(RNDIS_OID_802_11_INFRASTRUCTURE_MODE);
648 OID_STR(RNDIS_OID_802_11_ADD_WEP);
649 OID_STR(RNDIS_OID_802_11_REMOVE_WEP);
650 OID_STR(RNDIS_OID_802_11_DISASSOCIATE);
651 OID_STR(RNDIS_OID_802_11_AUTHENTICATION_MODE);
652 OID_STR(RNDIS_OID_802_11_PRIVACY_FILTER);
653 OID_STR(RNDIS_OID_802_11_BSSID_LIST_SCAN);
654 OID_STR(RNDIS_OID_802_11_ENCRYPTION_STATUS);
655 OID_STR(RNDIS_OID_802_11_ADD_KEY);
656 OID_STR(RNDIS_OID_802_11_REMOVE_KEY);
657 OID_STR(RNDIS_OID_802_11_ASSOCIATION_INFORMATION);
658 OID_STR(RNDIS_OID_802_11_CAPABILITY);
659 OID_STR(RNDIS_OID_802_11_PMKID);
660 OID_STR(RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED);
661 OID_STR(RNDIS_OID_802_11_NETWORK_TYPE_IN_USE);
662 OID_STR(RNDIS_OID_802_11_TX_POWER_LEVEL);
663 OID_STR(RNDIS_OID_802_11_RSSI);
664 OID_STR(RNDIS_OID_802_11_RSSI_TRIGGER);
665 OID_STR(RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD);
666 OID_STR(RNDIS_OID_802_11_RTS_THRESHOLD);
667 OID_STR(RNDIS_OID_802_11_SUPPORTED_RATES);
668 OID_STR(RNDIS_OID_802_11_CONFIGURATION);
669 OID_STR(RNDIS_OID_802_11_POWER_MODE);
670 OID_STR(RNDIS_OID_802_11_BSSID_LIST);
671#undef OID_STR
672 }
673
674 return "?";
675}
676#else
677static const char *oid_to_string(u32 oid)
678{
679 return "?";
680}
681#endif
682
683/* translate error code */
684static int rndis_error_status(__le32 rndis_status)
685{
686 int ret = -EINVAL;
687 switch (le32_to_cpu(rndis_status)) {
688 case RNDIS_STATUS_SUCCESS:
689 ret = 0;
690 break;
691 case RNDIS_STATUS_FAILURE:
692 case RNDIS_STATUS_INVALID_DATA:
693 ret = -EINVAL;
694 break;
695 case RNDIS_STATUS_NOT_SUPPORTED:
696 ret = -EOPNOTSUPP;
697 break;
698 case RNDIS_STATUS_ADAPTER_NOT_READY:
699 case RNDIS_STATUS_ADAPTER_NOT_OPEN:
700 ret = -EBUSY;
701 break;
702 }
703 return ret;
704}
705
706static int rndis_query_oid(struct usbnet *dev, u32 oid, void *data, int *len)
707{
708 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
709 union {
710 void *buf;
711 struct rndis_msg_hdr *header;
712 struct rndis_query *get;
713 struct rndis_query_c *get_c;
714 } u;
715 int ret, buflen;
716 int resplen, respoffs, copylen;
717
718 buflen = *len + sizeof(*u.get);
719 if (buflen < CONTROL_BUFFER_SIZE)
720 buflen = CONTROL_BUFFER_SIZE;
721
722 if (buflen > COMMAND_BUFFER_SIZE) {
723 u.buf = kmalloc(buflen, GFP_KERNEL);
724 if (!u.buf)
725 return -ENOMEM;
726 } else {
727 u.buf = priv->command_buffer;
728 }
729
730 mutex_lock(&priv->command_lock);
731
732 memset(u.get, 0, sizeof *u.get);
733 u.get->msg_type = cpu_to_le32(RNDIS_MSG_QUERY);
734 u.get->msg_len = cpu_to_le32(sizeof *u.get);
735 u.get->oid = cpu_to_le32(oid);
736
737 priv->current_command_oid = oid;
738 ret = rndis_command(dev, u.header, buflen);
739 priv->current_command_oid = 0;
740 if (ret < 0)
741 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
742 __func__, oid_to_string(oid), ret,
743 le32_to_cpu(u.get_c->status));
744
745 if (ret == 0) {
746 resplen = le32_to_cpu(u.get_c->len);
747 respoffs = le32_to_cpu(u.get_c->offset) + 8;
748
749 if (respoffs > buflen) {
750 /* Device returned data offset outside buffer, error. */
751 netdev_dbg(dev->net, "%s(%s): received invalid "
752 "data offset: %d > %d\n", __func__,
753 oid_to_string(oid), respoffs, buflen);
754
755 ret = -EINVAL;
756 goto exit_unlock;
757 }
758
759 if ((resplen + respoffs) > buflen) {
760 /* Device would have returned more data if buffer would
761 * have been big enough. Copy just the bits that we got.
762 */
763 copylen = buflen - respoffs;
764 } else {
765 copylen = resplen;
766 }
767
768 if (copylen > *len)
769 copylen = *len;
770
771 memcpy(data, u.buf + respoffs, copylen);
772
773 *len = resplen;
774
775 ret = rndis_error_status(u.get_c->status);
776 if (ret < 0)
777 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
778 __func__, oid_to_string(oid),
779 le32_to_cpu(u.get_c->status), ret);
780 }
781
782exit_unlock:
783 mutex_unlock(&priv->command_lock);
784
785 if (u.buf != priv->command_buffer)
786 kfree(u.buf);
787 return ret;
788}
789
790static int rndis_set_oid(struct usbnet *dev, u32 oid, const void *data,
791 int len)
792{
793 struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
794 union {
795 void *buf;
796 struct rndis_msg_hdr *header;
797 struct rndis_set *set;
798 struct rndis_set_c *set_c;
799 } u;
800 int ret, buflen;
801
802 buflen = len + sizeof(*u.set);
803 if (buflen < CONTROL_BUFFER_SIZE)
804 buflen = CONTROL_BUFFER_SIZE;
805
806 if (buflen > COMMAND_BUFFER_SIZE) {
807 u.buf = kmalloc(buflen, GFP_KERNEL);
808 if (!u.buf)
809 return -ENOMEM;
810 } else {
811 u.buf = priv->command_buffer;
812 }
813
814 mutex_lock(&priv->command_lock);
815
816 memset(u.set, 0, sizeof *u.set);
817 u.set->msg_type = cpu_to_le32(RNDIS_MSG_SET);
818 u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
819 u.set->oid = cpu_to_le32(oid);
820 u.set->len = cpu_to_le32(len);
821 u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
822 u.set->handle = cpu_to_le32(0);
823 memcpy(u.buf + sizeof(*u.set), data, len);
824
825 priv->current_command_oid = oid;
826 ret = rndis_command(dev, u.header, buflen);
827 priv->current_command_oid = 0;
828 if (ret < 0)
829 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
830 __func__, oid_to_string(oid), ret,
831 le32_to_cpu(u.set_c->status));
832
833 if (ret == 0) {
834 ret = rndis_error_status(u.set_c->status);
835
836 if (ret < 0)
837 netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
838 __func__, oid_to_string(oid),
839 le32_to_cpu(u.set_c->status), ret);
840 }
841
842 mutex_unlock(&priv->command_lock);
843
844 if (u.buf != priv->command_buffer)
845 kfree(u.buf);
846 return ret;
847}
848
849static int rndis_reset(struct usbnet *usbdev)
850{
851 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
852 struct rndis_reset *reset;
853 int ret;
854
855 mutex_lock(&priv->command_lock);
856
857 reset = (void *)priv->command_buffer;
858 memset(reset, 0, sizeof(*reset));
859 reset->msg_type = cpu_to_le32(RNDIS_MSG_RESET);
860 reset->msg_len = cpu_to_le32(sizeof(*reset));
861 priv->current_command_oid = 0;
862 ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
863
864 mutex_unlock(&priv->command_lock);
865
866 if (ret < 0)
867 return ret;
868 return 0;
869}
870
871/*
872 * Specs say that we can only set config parameters only soon after device
873 * initialization.
874 * value_type: 0 = u32, 2 = unicode string
875 */
876static int rndis_set_config_parameter(struct usbnet *dev, char *param,
877 int value_type, void *value)
878{
879 struct ndis_config_param *infobuf;
880 int value_len, info_len, param_len, ret, i;
881 __le16 *unibuf;
882 __le32 *dst_value;
883
884 if (value_type == 0)
885 value_len = sizeof(__le32);
886 else if (value_type == 2)
887 value_len = strlen(value) * sizeof(__le16);
888 else
889 return -EINVAL;
890
891 param_len = strlen(param) * sizeof(__le16);
892 info_len = sizeof(*infobuf) + param_len + value_len;
893
894#ifdef DEBUG
895 info_len += 12;
896#endif
897 infobuf = kmalloc(info_len, GFP_KERNEL);
898 if (!infobuf)
899 return -ENOMEM;
900
901#ifdef DEBUG
902 info_len -= 12;
903 /* extra 12 bytes are for padding (debug output) */
904 memset(infobuf, 0xCC, info_len + 12);
905#endif
906
907 if (value_type == 2)
908 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
909 param, (u8 *)value);
910 else
911 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
912 param, *(u32 *)value);
913
914 infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
915 infobuf->name_length = cpu_to_le32(param_len);
916 infobuf->type = cpu_to_le32(value_type);
917 infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
918 infobuf->value_length = cpu_to_le32(value_len);
919
920 /* simple string to unicode string conversion */
921 unibuf = (void *)infobuf + sizeof(*infobuf);
922 for (i = 0; i < param_len / sizeof(__le16); i++)
923 unibuf[i] = cpu_to_le16(param[i]);
924
925 if (value_type == 2) {
926 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
927 for (i = 0; i < value_len / sizeof(__le16); i++)
928 unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
929 } else {
930 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
931 *dst_value = cpu_to_le32(*(u32 *)value);
932 }
933
934#ifdef DEBUG
935 netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
936 for (i = 0; i < info_len; i += 12) {
937 u32 *tmp = (u32 *)((u8 *)infobuf + i);
938 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
939 cpu_to_be32(tmp[0]),
940 cpu_to_be32(tmp[1]),
941 cpu_to_be32(tmp[2]));
942 }
943#endif
944
945 ret = rndis_set_oid(dev, RNDIS_OID_GEN_RNDIS_CONFIG_PARAMETER,
946 infobuf, info_len);
947 if (ret != 0)
948 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
949 ret);
950
951 kfree(infobuf);
952 return ret;
953}
954
955static int rndis_set_config_parameter_str(struct usbnet *dev,
956 char *param, char *value)
957{
958 return rndis_set_config_parameter(dev, param, 2, value);
959}
960
961/*
962 * data conversion functions
963 */
964static int level_to_qual(int level)
965{
966 int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
967 return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
968}
969
970/*
971 * common functions
972 */
973static int set_infra_mode(struct usbnet *usbdev, int mode);
974static void restore_keys(struct usbnet *usbdev);
975static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
976 bool *matched);
977
978static int rndis_start_bssid_list_scan(struct usbnet *usbdev)
979{
980 __le32 tmp;
981
982 /* Note: RNDIS_OID_802_11_BSSID_LIST_SCAN clears internal BSS list. */
983 tmp = cpu_to_le32(1);
984 return rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST_SCAN, &tmp,
985 sizeof(tmp));
986}
987
988static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
989{
990 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
991 int ret;
992
993 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_SSID,
994 ssid, sizeof(*ssid));
995 if (ret < 0) {
996 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
997 return ret;
998 }
999 if (ret == 0) {
1000 priv->radio_on = true;
1001 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
1002 }
1003
1004 return ret;
1005}
1006
1007static int set_bssid(struct usbnet *usbdev, const u8 *bssid)
1008{
1009 int ret;
1010
1011 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_BSSID,
1012 bssid, ETH_ALEN);
1013 if (ret < 0) {
1014 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
1015 bssid, ret);
1016 return ret;
1017 }
1018
1019 return ret;
1020}
1021
1022static int clear_bssid(struct usbnet *usbdev)
1023{
1024 static const u8 broadcast_mac[ETH_ALEN] = {
1025 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
1026 };
1027
1028 return set_bssid(usbdev, broadcast_mac);
1029}
1030
1031static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
1032{
1033 int ret, len;
1034
1035 len = ETH_ALEN;
1036 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID,
1037 bssid, &len);
1038
1039 if (ret != 0)
1040 eth_zero_addr(bssid);
1041
1042 return ret;
1043}
1044
1045static int get_association_info(struct usbnet *usbdev,
1046 struct ndis_80211_assoc_info *info, int len)
1047{
1048 return rndis_query_oid(usbdev,
1049 RNDIS_OID_802_11_ASSOCIATION_INFORMATION,
1050 info, &len);
1051}
1052
1053static bool is_associated(struct usbnet *usbdev)
1054{
1055 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1056 u8 bssid[ETH_ALEN];
1057 int ret;
1058
1059 if (!priv->radio_on)
1060 return false;
1061
1062 ret = get_bssid(usbdev, bssid);
1063
1064 return (ret == 0 && !is_zero_ether_addr(bssid));
1065}
1066
1067static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1068{
1069 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1070 struct ndis_80211_ssid ssid;
1071 int i, ret = 0;
1072
1073 if (priv->radio_on) {
1074 ret = rndis_set_oid(usbdev,
1075 RNDIS_OID_802_11_DISASSOCIATE,
1076 NULL, 0);
1077 if (ret == 0) {
1078 priv->radio_on = false;
1079 netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1080 __func__);
1081
1082 if (reset_ssid)
1083 msleep(100);
1084 }
1085 }
1086
1087 /* disassociate causes radio to be turned off; if reset_ssid
1088 * is given, set random ssid to enable radio */
1089 if (reset_ssid) {
1090 /* Set device to infrastructure mode so we don't get ad-hoc
1091 * 'media connect' indications with the random ssid.
1092 */
1093 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1094
1095 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1096 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1097 ssid.essid[0] = 0x1;
1098 ssid.essid[1] = 0xff;
1099 for (i = 2; i < sizeof(ssid.essid); i++)
1100 ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1101 ret = set_essid(usbdev, &ssid);
1102 }
1103 return ret;
1104}
1105
1106static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1107 enum nl80211_auth_type auth_type, int keymgmt)
1108{
1109 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1110 __le32 tmp;
1111 int auth_mode, ret;
1112
1113 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1114 __func__, wpa_version, auth_type, keymgmt);
1115
1116 if (wpa_version & NL80211_WPA_VERSION_2) {
1117 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1118 auth_mode = NDIS_80211_AUTH_WPA2;
1119 else
1120 auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1121 } else if (wpa_version & NL80211_WPA_VERSION_1) {
1122 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1123 auth_mode = NDIS_80211_AUTH_WPA;
1124 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1125 auth_mode = NDIS_80211_AUTH_WPA_PSK;
1126 else
1127 auth_mode = NDIS_80211_AUTH_WPA_NONE;
1128 } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1129 auth_mode = NDIS_80211_AUTH_SHARED;
1130 else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1131 auth_mode = NDIS_80211_AUTH_OPEN;
1132 else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1133 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1134 else
1135 return -ENOTSUPP;
1136
1137 tmp = cpu_to_le32(auth_mode);
1138 ret = rndis_set_oid(usbdev,
1139 RNDIS_OID_802_11_AUTHENTICATION_MODE,
1140 &tmp, sizeof(tmp));
1141 if (ret != 0) {
1142 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1143 ret);
1144 return ret;
1145 }
1146
1147 priv->wpa_version = wpa_version;
1148
1149 return 0;
1150}
1151
1152static int set_priv_filter(struct usbnet *usbdev)
1153{
1154 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1155 __le32 tmp;
1156
1157 netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1158 __func__, priv->wpa_version);
1159
1160 if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1161 priv->wpa_version & NL80211_WPA_VERSION_1)
1162 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1163 else
1164 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1165
1166 return rndis_set_oid(usbdev,
1167 RNDIS_OID_802_11_PRIVACY_FILTER, &tmp,
1168 sizeof(tmp));
1169}
1170
1171static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1172{
1173 __le32 tmp;
1174 int encr_mode, ret;
1175
1176 netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1177 __func__, pairwise, groupwise);
1178
1179 if (pairwise & RNDIS_WLAN_ALG_CCMP)
1180 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1181 else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1182 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1183 else if (pairwise & RNDIS_WLAN_ALG_WEP)
1184 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1185 else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1186 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1187 else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1188 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1189 else
1190 encr_mode = NDIS_80211_ENCR_DISABLED;
1191
1192 tmp = cpu_to_le32(encr_mode);
1193 ret = rndis_set_oid(usbdev,
1194 RNDIS_OID_802_11_ENCRYPTION_STATUS, &tmp,
1195 sizeof(tmp));
1196 if (ret != 0) {
1197 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1198 ret);
1199 return ret;
1200 }
1201
1202 return 0;
1203}
1204
1205static int set_infra_mode(struct usbnet *usbdev, int mode)
1206{
1207 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1208 __le32 tmp;
1209 int ret;
1210
1211 netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1212 __func__, priv->infra_mode);
1213
1214 tmp = cpu_to_le32(mode);
1215 ret = rndis_set_oid(usbdev,
1216 RNDIS_OID_802_11_INFRASTRUCTURE_MODE,
1217 &tmp, sizeof(tmp));
1218 if (ret != 0) {
1219 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1220 ret);
1221 return ret;
1222 }
1223
1224 /* NDIS drivers clear keys when infrastructure mode is
1225 * changed. But Linux tools assume otherwise. So set the
1226 * keys */
1227 restore_keys(usbdev);
1228
1229 priv->infra_mode = mode;
1230 return 0;
1231}
1232
1233static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1234{
1235 __le32 tmp;
1236
1237 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1238
1239 if (rts_threshold == -1 || rts_threshold > 2347)
1240 rts_threshold = 2347;
1241
1242 tmp = cpu_to_le32(rts_threshold);
1243 return rndis_set_oid(usbdev,
1244 RNDIS_OID_802_11_RTS_THRESHOLD,
1245 &tmp, sizeof(tmp));
1246}
1247
1248static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1249{
1250 __le32 tmp;
1251
1252 netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1253
1254 if (frag_threshold < 256 || frag_threshold > 2346)
1255 frag_threshold = 2346;
1256
1257 tmp = cpu_to_le32(frag_threshold);
1258 return rndis_set_oid(usbdev,
1259 RNDIS_OID_802_11_FRAGMENTATION_THRESHOLD,
1260 &tmp, sizeof(tmp));
1261}
1262
1263static void set_default_iw_params(struct usbnet *usbdev)
1264{
1265 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1266 set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1267 RNDIS_WLAN_KEY_MGMT_NONE);
1268 set_priv_filter(usbdev);
1269 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1270}
1271
1272static int deauthenticate(struct usbnet *usbdev)
1273{
1274 int ret;
1275
1276 ret = disassociate(usbdev, true);
1277 set_default_iw_params(usbdev);
1278 return ret;
1279}
1280
1281static int set_channel(struct usbnet *usbdev, int channel)
1282{
1283 struct ndis_80211_conf config;
1284 unsigned int dsconfig;
1285 int len, ret;
1286
1287 netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1288
1289 /* this OID is valid only when not associated */
1290 if (is_associated(usbdev))
1291 return 0;
1292
1293 dsconfig = 1000 *
1294 ieee80211_channel_to_frequency(channel, NL80211_BAND_2GHZ);
1295
1296 len = sizeof(config);
1297 ret = rndis_query_oid(usbdev,
1298 RNDIS_OID_802_11_CONFIGURATION,
1299 &config, &len);
1300 if (ret < 0) {
1301 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1302 __func__);
1303 return ret;
1304 }
1305
1306 config.ds_config = cpu_to_le32(dsconfig);
1307 ret = rndis_set_oid(usbdev,
1308 RNDIS_OID_802_11_CONFIGURATION,
1309 &config, sizeof(config));
1310
1311 netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1312
1313 return ret;
1314}
1315
1316static struct ieee80211_channel *get_current_channel(struct usbnet *usbdev,
1317 u32 *beacon_period)
1318{
1319 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1320 struct ieee80211_channel *channel;
1321 struct ndis_80211_conf config;
1322 int len, ret;
1323
1324 /* Get channel and beacon interval */
1325 len = sizeof(config);
1326 ret = rndis_query_oid(usbdev,
1327 RNDIS_OID_802_11_CONFIGURATION,
1328 &config, &len);
1329 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_CONFIGURATION -> %d\n",
1330 __func__, ret);
1331 if (ret < 0)
1332 return NULL;
1333
1334 channel = ieee80211_get_channel(priv->wdev.wiphy,
1335 KHZ_TO_MHZ(le32_to_cpu(config.ds_config)));
1336 if (!channel)
1337 return NULL;
1338
1339 if (beacon_period)
1340 *beacon_period = le32_to_cpu(config.beacon_period);
1341 return channel;
1342}
1343
1344/* index must be 0 - N, as per NDIS */
1345static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1346 u8 index)
1347{
1348 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1349 struct ndis_80211_wep_key ndis_key;
1350 u32 cipher;
1351 int ret;
1352
1353 netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1354 __func__, index, key_len);
1355
1356 if (index >= RNDIS_WLAN_NUM_KEYS)
1357 return -EINVAL;
1358
1359 if (key_len == 5)
1360 cipher = WLAN_CIPHER_SUITE_WEP40;
1361 else if (key_len == 13)
1362 cipher = WLAN_CIPHER_SUITE_WEP104;
1363 else
1364 return -EINVAL;
1365
1366 memset(&ndis_key, 0, sizeof(ndis_key));
1367
1368 ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1369 ndis_key.length = cpu_to_le32(key_len);
1370 ndis_key.index = cpu_to_le32(index);
1371 memcpy(&ndis_key.material, key, key_len);
1372
1373 if (index == priv->encr_tx_key_index) {
1374 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1375 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1376 RNDIS_WLAN_ALG_NONE);
1377 if (ret)
1378 netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1379 ret);
1380 }
1381
1382 ret = rndis_set_oid(usbdev,
1383 RNDIS_OID_802_11_ADD_WEP, &ndis_key,
1384 sizeof(ndis_key));
1385 if (ret != 0) {
1386 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1387 index + 1, ret);
1388 return ret;
1389 }
1390
1391 priv->encr_keys[index].len = key_len;
1392 priv->encr_keys[index].cipher = cipher;
1393 memcpy(&priv->encr_keys[index].material, key, key_len);
1394 eth_broadcast_addr(priv->encr_keys[index].bssid);
1395
1396 return 0;
1397}
1398
1399static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1400 u8 index, const u8 *addr, const u8 *rx_seq,
1401 int seq_len, u32 cipher, __le32 flags)
1402{
1403 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1404 struct ndis_80211_key ndis_key;
1405 bool is_addr_ok;
1406 int ret;
1407
1408 if (index >= RNDIS_WLAN_NUM_KEYS) {
1409 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1410 __func__, index);
1411 return -EINVAL;
1412 }
1413 if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1414 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1415 __func__, key_len);
1416 return -EINVAL;
1417 }
1418 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1419 if (!rx_seq || seq_len <= 0) {
1420 netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1421 __func__);
1422 return -EINVAL;
1423 }
1424 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1425 netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1426 return -EINVAL;
1427 }
1428 }
1429
1430 is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1431 !is_broadcast_ether_addr(addr);
1432 if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1433 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1434 __func__, addr);
1435 return -EINVAL;
1436 }
1437
1438 netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1439 __func__, index,
1440 !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1441 !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1442 !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1443
1444 memset(&ndis_key, 0, sizeof(ndis_key));
1445
1446 ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1447 sizeof(ndis_key.material) + key_len);
1448 ndis_key.length = cpu_to_le32(key_len);
1449 ndis_key.index = cpu_to_le32(index) | flags;
1450
1451 if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1452 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1453 * different order than NDIS spec, so swap the order here. */
1454 memcpy(ndis_key.material, key, 16);
1455 memcpy(ndis_key.material + 16, key + 24, 8);
1456 memcpy(ndis_key.material + 24, key + 16, 8);
1457 } else
1458 memcpy(ndis_key.material, key, key_len);
1459
1460 if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1461 memcpy(ndis_key.rsc, rx_seq, seq_len);
1462
1463 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1464 /* pairwise key */
1465 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1466 } else {
1467 /* group key */
1468 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1469 eth_broadcast_addr(ndis_key.bssid);
1470 else
1471 get_bssid(usbdev, ndis_key.bssid);
1472 }
1473
1474 ret = rndis_set_oid(usbdev,
1475 RNDIS_OID_802_11_ADD_KEY, &ndis_key,
1476 le32_to_cpu(ndis_key.size));
1477 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_ADD_KEY -> %08X\n",
1478 __func__, ret);
1479 if (ret != 0)
1480 return ret;
1481
1482 memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1483 priv->encr_keys[index].len = key_len;
1484 priv->encr_keys[index].cipher = cipher;
1485 memcpy(&priv->encr_keys[index].material, key, key_len);
1486 if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1487 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1488 else
1489 eth_broadcast_addr(priv->encr_keys[index].bssid);
1490
1491 if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1492 priv->encr_tx_key_index = index;
1493
1494 return 0;
1495}
1496
1497static int restore_key(struct usbnet *usbdev, u8 key_idx)
1498{
1499 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1500 struct rndis_wlan_encr_key key;
1501
1502 if (is_wpa_key(priv, key_idx))
1503 return 0;
1504
1505 key = priv->encr_keys[key_idx];
1506
1507 netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1508
1509 if (key.len == 0)
1510 return 0;
1511
1512 return add_wep_key(usbdev, key.material, key.len, key_idx);
1513}
1514
1515static void restore_keys(struct usbnet *usbdev)
1516{
1517 int i;
1518
1519 for (i = 0; i < 4; i++)
1520 restore_key(usbdev, i);
1521}
1522
1523static void clear_key(struct rndis_wlan_private *priv, u8 idx)
1524{
1525 memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1526}
1527
1528/* remove_key is for both wep and wpa */
1529static int remove_key(struct usbnet *usbdev, u8 index, const u8 *bssid)
1530{
1531 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1532 struct ndis_80211_remove_key remove_key;
1533 __le32 keyindex;
1534 bool is_wpa;
1535 int ret;
1536
1537 if (index >= RNDIS_WLAN_NUM_KEYS)
1538 return -ENOENT;
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,
1566 RNDIS_OID_802_11_REMOVE_KEY,
1567 &remove_key, sizeof(remove_key));
1568 if (ret != 0)
1569 return ret;
1570 } else {
1571 keyindex = cpu_to_le32(index);
1572 ret = rndis_set_oid(usbdev,
1573 RNDIS_OID_802_11_REMOVE_WEP,
1574 &keyindex, sizeof(keyindex));
1575 if (ret != 0) {
1576 netdev_warn(usbdev->net,
1577 "removing encryption key %d failed (%08X)\n",
1578 index, ret);
1579 return ret;
1580 }
1581 }
1582
1583 /* if it is transmit key, disable encryption */
1584 if (index == priv->encr_tx_key_index)
1585 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1586
1587 return 0;
1588}
1589
1590static void set_multicast_list(struct usbnet *usbdev)
1591{
1592 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1593 struct netdev_hw_addr *ha;
1594 __le32 filter, basefilter;
1595 int ret;
1596 char *mc_addrs = NULL;
1597 int mc_count;
1598
1599 basefilter = filter = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED |
1600 RNDIS_PACKET_TYPE_BROADCAST);
1601
1602 if (usbdev->net->flags & IFF_PROMISC) {
1603 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_PROMISCUOUS |
1604 RNDIS_PACKET_TYPE_ALL_LOCAL);
1605 } else if (usbdev->net->flags & IFF_ALLMULTI) {
1606 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1607 }
1608
1609 if (filter != basefilter)
1610 goto set_filter;
1611
1612 /*
1613 * mc_list should be accessed holding the lock, so copy addresses to
1614 * local buffer first.
1615 */
1616 netif_addr_lock_bh(usbdev->net);
1617 mc_count = netdev_mc_count(usbdev->net);
1618 if (mc_count > priv->multicast_size) {
1619 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1620 } else if (mc_count) {
1621 int i = 0;
1622
1623 mc_addrs = kmalloc_array(mc_count, ETH_ALEN, GFP_ATOMIC);
1624 if (!mc_addrs) {
1625 netif_addr_unlock_bh(usbdev->net);
1626 return;
1627 }
1628
1629 netdev_for_each_mc_addr(ha, usbdev->net)
1630 memcpy(mc_addrs + i++ * ETH_ALEN,
1631 ha->addr, ETH_ALEN);
1632 }
1633 netif_addr_unlock_bh(usbdev->net);
1634
1635 if (filter != basefilter)
1636 goto set_filter;
1637
1638 if (mc_count) {
1639 ret = rndis_set_oid(usbdev,
1640 RNDIS_OID_802_3_MULTICAST_LIST,
1641 mc_addrs, mc_count * ETH_ALEN);
1642 kfree(mc_addrs);
1643 if (ret == 0)
1644 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_MULTICAST);
1645 else
1646 filter |= cpu_to_le32(RNDIS_PACKET_TYPE_ALL_MULTICAST);
1647
1648 netdev_dbg(usbdev->net, "RNDIS_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, RNDIS_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, "RNDIS_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, RNDIS_OID_802_11_PMKID,
1720 pmkids, &len);
1721 if (ret < 0) {
1722 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d)"
1723 " -> %d\n", __func__, len, max_pmkids, ret);
1724
1725 kfree(pmkids);
1726 return ERR_PTR(ret);
1727 }
1728
1729 if (le32_to_cpu(pmkids->bssid_info_count) > max_pmkids)
1730 pmkids->bssid_info_count = cpu_to_le32(max_pmkids);
1731
1732 debug_print_pmkids(usbdev, pmkids, __func__);
1733
1734 return pmkids;
1735}
1736
1737static int set_device_pmkids(struct usbnet *usbdev,
1738 struct ndis_80211_pmkid *pmkids)
1739{
1740 int ret, len, num_pmkids;
1741
1742 num_pmkids = le32_to_cpu(pmkids->bssid_info_count);
1743 len = sizeof(*pmkids) + num_pmkids * sizeof(pmkids->bssid_info[0]);
1744 pmkids->length = cpu_to_le32(len);
1745
1746 debug_print_pmkids(usbdev, pmkids, __func__);
1747
1748 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID, pmkids,
1749 le32_to_cpu(pmkids->length));
1750 if (ret < 0) {
1751 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_PMKID(%d, %d) -> %d"
1752 "\n", __func__, len, num_pmkids, ret);
1753 }
1754
1755 kfree(pmkids);
1756 return ret;
1757}
1758
1759static struct ndis_80211_pmkid *remove_pmkid(struct usbnet *usbdev,
1760 struct ndis_80211_pmkid *pmkids,
1761 struct cfg80211_pmksa *pmksa,
1762 int max_pmkids)
1763{
1764 int i, newlen, err;
1765 unsigned int count;
1766
1767 count = le32_to_cpu(pmkids->bssid_info_count);
1768
1769 if (count > max_pmkids)
1770 count = max_pmkids;
1771
1772 for (i = 0; i < count; i++)
1773 if (ether_addr_equal(pmkids->bssid_info[i].bssid,
1774 pmksa->bssid))
1775 break;
1776
1777 /* pmkid not found */
1778 if (i == count) {
1779 netdev_dbg(usbdev->net, "%s(): bssid not found (%pM)\n",
1780 __func__, pmksa->bssid);
1781 err = -ENOENT;
1782 goto error;
1783 }
1784
1785 for (; i + 1 < count; i++)
1786 pmkids->bssid_info[i] = pmkids->bssid_info[i + 1];
1787
1788 count--;
1789 newlen = sizeof(*pmkids) + count * sizeof(pmkids->bssid_info[0]);
1790
1791 pmkids->length = cpu_to_le32(newlen);
1792 pmkids->bssid_info_count = cpu_to_le32(count);
1793
1794 return pmkids;
1795error:
1796 kfree(pmkids);
1797 return ERR_PTR(err);
1798}
1799
1800static struct ndis_80211_pmkid *update_pmkid(struct usbnet *usbdev,
1801 struct ndis_80211_pmkid *pmkids,
1802 struct cfg80211_pmksa *pmksa,
1803 int max_pmkids)
1804{
1805 struct ndis_80211_pmkid *new_pmkids;
1806 int i, err, newlen;
1807 unsigned int count;
1808
1809 count = le32_to_cpu(pmkids->bssid_info_count);
1810
1811 if (count > max_pmkids)
1812 count = max_pmkids;
1813
1814 /* update with new pmkid */
1815 for (i = 0; i < count; i++) {
1816 if (!ether_addr_equal(pmkids->bssid_info[i].bssid,
1817 pmksa->bssid))
1818 continue;
1819
1820 memcpy(pmkids->bssid_info[i].pmkid, pmksa->pmkid,
1821 WLAN_PMKID_LEN);
1822
1823 return pmkids;
1824 }
1825
1826 /* out of space, return error */
1827 if (i == max_pmkids) {
1828 netdev_dbg(usbdev->net, "%s(): out of space\n", __func__);
1829 err = -ENOSPC;
1830 goto error;
1831 }
1832
1833 /* add new pmkid */
1834 newlen = sizeof(*pmkids) + (count + 1) * sizeof(pmkids->bssid_info[0]);
1835
1836 new_pmkids = krealloc(pmkids, newlen, GFP_KERNEL);
1837 if (!new_pmkids) {
1838 err = -ENOMEM;
1839 goto error;
1840 }
1841 pmkids = new_pmkids;
1842
1843 pmkids->length = cpu_to_le32(newlen);
1844 pmkids->bssid_info_count = cpu_to_le32(count + 1);
1845
1846 memcpy(pmkids->bssid_info[count].bssid, pmksa->bssid, ETH_ALEN);
1847 memcpy(pmkids->bssid_info[count].pmkid, pmksa->pmkid, WLAN_PMKID_LEN);
1848
1849 return pmkids;
1850error:
1851 kfree(pmkids);
1852 return ERR_PTR(err);
1853}
1854
1855/*
1856 * cfg80211 ops
1857 */
1858static int rndis_change_virtual_intf(struct wiphy *wiphy,
1859 struct net_device *dev,
1860 enum nl80211_iftype type,
1861 struct vif_params *params)
1862{
1863 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1864 struct usbnet *usbdev = priv->usbdev;
1865 int mode;
1866
1867 switch (type) {
1868 case NL80211_IFTYPE_ADHOC:
1869 mode = NDIS_80211_INFRA_ADHOC;
1870 break;
1871 case NL80211_IFTYPE_STATION:
1872 mode = NDIS_80211_INFRA_INFRA;
1873 break;
1874 default:
1875 return -EINVAL;
1876 }
1877
1878 priv->wdev.iftype = type;
1879
1880 return set_infra_mode(usbdev, mode);
1881}
1882
1883static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1884{
1885 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1886 struct usbnet *usbdev = priv->usbdev;
1887 int err;
1888
1889 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1890 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1891 if (err < 0)
1892 return err;
1893 }
1894
1895 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1896 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1897 if (err < 0)
1898 return err;
1899 }
1900
1901 return 0;
1902}
1903
1904static int rndis_set_tx_power(struct wiphy *wiphy,
1905 struct wireless_dev *wdev,
1906 enum nl80211_tx_power_setting type,
1907 int mbm)
1908{
1909 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1910 struct usbnet *usbdev = priv->usbdev;
1911
1912 netdev_dbg(usbdev->net, "%s(): type:0x%x mbm:%i\n",
1913 __func__, type, mbm);
1914
1915 if (mbm < 0 || (mbm % 100))
1916 return -ENOTSUPP;
1917
1918 /* Device doesn't support changing txpower after initialization, only
1919 * turn off/on radio. Support 'auto' mode and setting same dBm that is
1920 * currently used.
1921 */
1922 if (type == NL80211_TX_POWER_AUTOMATIC ||
1923 MBM_TO_DBM(mbm) == get_bcm4320_power_dbm(priv)) {
1924 if (!priv->radio_on)
1925 disassociate(usbdev, true); /* turn on radio */
1926
1927 return 0;
1928 }
1929
1930 return -ENOTSUPP;
1931}
1932
1933static int rndis_get_tx_power(struct wiphy *wiphy,
1934 struct wireless_dev *wdev,
1935 int *dbm)
1936{
1937 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1938 struct usbnet *usbdev = priv->usbdev;
1939
1940 *dbm = get_bcm4320_power_dbm(priv);
1941
1942 netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1943
1944 return 0;
1945}
1946
1947#define SCAN_DELAY_JIFFIES (6 * HZ)
1948static int rndis_scan(struct wiphy *wiphy,
1949 struct cfg80211_scan_request *request)
1950{
1951 struct net_device *dev = request->wdev->netdev;
1952 struct usbnet *usbdev = netdev_priv(dev);
1953 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1954 int ret;
1955 int delay = SCAN_DELAY_JIFFIES;
1956
1957 netdev_dbg(usbdev->net, "cfg80211.scan\n");
1958
1959 /* Get current bssid list from device before new scan, as new scan
1960 * clears internal bssid list.
1961 */
1962 rndis_check_bssid_list(usbdev, NULL, NULL);
1963
1964 if (priv->scan_request && priv->scan_request != request)
1965 return -EBUSY;
1966
1967 priv->scan_request = request;
1968
1969 ret = rndis_start_bssid_list_scan(usbdev);
1970 if (ret == 0) {
1971 if (priv->device_type == RNDIS_BCM4320A)
1972 delay = HZ;
1973
1974 /* Wait before retrieving scan results from device */
1975 queue_delayed_work(priv->workqueue, &priv->scan_work, delay);
1976 }
1977
1978 return ret;
1979}
1980
1981static bool rndis_bss_info_update(struct usbnet *usbdev,
1982 struct ndis_80211_bssid_ex *bssid)
1983{
1984 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1985 struct ieee80211_channel *channel;
1986 struct cfg80211_bss *bss;
1987 s32 signal;
1988 u64 timestamp;
1989 u16 capability;
1990 u16 beacon_interval;
1991 struct ndis_80211_fixed_ies *fixed;
1992 int ie_len, bssid_len;
1993 u8 *ie;
1994
1995 netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM], len: %d\n",
1996 bssid->ssid.essid, bssid->mac, le32_to_cpu(bssid->length));
1997
1998 /* parse bssid structure */
1999 bssid_len = le32_to_cpu(bssid->length);
2000
2001 if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
2002 sizeof(struct ndis_80211_fixed_ies))
2003 return NULL;
2004
2005 fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
2006
2007 ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
2008 ie_len = min(bssid_len - (int)sizeof(*bssid),
2009 (int)le32_to_cpu(bssid->ie_length));
2010 ie_len -= sizeof(struct ndis_80211_fixed_ies);
2011 if (ie_len < 0)
2012 return NULL;
2013
2014 /* extract data for cfg80211_inform_bss */
2015 channel = ieee80211_get_channel(priv->wdev.wiphy,
2016 KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
2017 if (!channel)
2018 return NULL;
2019
2020 signal = level_to_qual(le32_to_cpu(bssid->rssi));
2021 timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
2022 capability = le16_to_cpu(fixed->capabilities);
2023 beacon_interval = le16_to_cpu(fixed->beacon_interval);
2024
2025 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2026 CFG80211_BSS_FTYPE_UNKNOWN, bssid->mac,
2027 timestamp, capability, beacon_interval,
2028 ie, ie_len, signal, GFP_KERNEL);
2029 cfg80211_put_bss(priv->wdev.wiphy, bss);
2030
2031 return (bss != NULL);
2032}
2033
2034static struct ndis_80211_bssid_ex *next_bssid_list_item(
2035 struct ndis_80211_bssid_ex *bssid,
2036 int *bssid_len, void *buf, int len)
2037{
2038 void *buf_end, *bssid_end;
2039
2040 buf_end = (char *)buf + len;
2041 bssid_end = (char *)bssid + *bssid_len;
2042
2043 if ((int)(buf_end - bssid_end) < sizeof(bssid->length)) {
2044 *bssid_len = 0;
2045 return NULL;
2046 } else {
2047 bssid = (void *)((char *)bssid + *bssid_len);
2048 *bssid_len = le32_to_cpu(bssid->length);
2049 return bssid;
2050 }
2051}
2052
2053static bool check_bssid_list_item(struct ndis_80211_bssid_ex *bssid,
2054 int bssid_len, void *buf, int len)
2055{
2056 void *buf_end, *bssid_end;
2057
2058 if (!bssid || bssid_len <= 0 || bssid_len > len)
2059 return false;
2060
2061 buf_end = (char *)buf + len;
2062 bssid_end = (char *)bssid + bssid_len;
2063
2064 return (int)(buf_end - bssid_end) >= 0 && (int)(bssid_end - buf) >= 0;
2065}
2066
2067static int rndis_check_bssid_list(struct usbnet *usbdev, u8 *match_bssid,
2068 bool *matched)
2069{
2070 void *buf = NULL;
2071 struct ndis_80211_bssid_list_ex *bssid_list;
2072 struct ndis_80211_bssid_ex *bssid;
2073 int ret = -EINVAL, len, count, bssid_len, real_count, new_len;
2074
2075 netdev_dbg(usbdev->net, "%s()\n", __func__);
2076
2077 len = CONTROL_BUFFER_SIZE;
2078resize_buf:
2079 buf = kzalloc(len, GFP_KERNEL);
2080 if (!buf) {
2081 ret = -ENOMEM;
2082 goto out;
2083 }
2084
2085 /* BSSID-list might have got bigger last time we checked, keep
2086 * resizing until it won't get any bigger.
2087 */
2088 new_len = len;
2089 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_BSSID_LIST,
2090 buf, &new_len);
2091 if (ret != 0 || new_len < sizeof(struct ndis_80211_bssid_list_ex))
2092 goto out;
2093
2094 if (new_len > len) {
2095 len = new_len;
2096 kfree(buf);
2097 goto resize_buf;
2098 }
2099
2100 len = new_len;
2101
2102 bssid_list = buf;
2103 count = le32_to_cpu(bssid_list->num_items);
2104 real_count = 0;
2105 netdev_dbg(usbdev->net, "%s(): buflen: %d\n", __func__, len);
2106
2107 bssid_len = 0;
2108 bssid = next_bssid_list_item(bssid_list->bssid, &bssid_len, buf, len);
2109
2110 /* Device returns incorrect 'num_items'. Workaround by ignoring the
2111 * received 'num_items' and walking through full bssid buffer instead.
2112 */
2113 while (check_bssid_list_item(bssid, bssid_len, buf, len)) {
2114 if (rndis_bss_info_update(usbdev, bssid) && match_bssid &&
2115 matched) {
2116 if (ether_addr_equal(bssid->mac, match_bssid))
2117 *matched = true;
2118 }
2119
2120 real_count++;
2121 bssid = next_bssid_list_item(bssid, &bssid_len, buf, len);
2122 }
2123
2124 netdev_dbg(usbdev->net, "%s(): num_items from device: %d, really found:"
2125 " %d\n", __func__, count, real_count);
2126
2127out:
2128 kfree(buf);
2129 return ret;
2130}
2131
2132static void rndis_get_scan_results(struct work_struct *work)
2133{
2134 struct rndis_wlan_private *priv =
2135 container_of(work, struct rndis_wlan_private, scan_work.work);
2136 struct usbnet *usbdev = priv->usbdev;
2137 struct cfg80211_scan_info info = {};
2138 int ret;
2139
2140 netdev_dbg(usbdev->net, "get_scan_results\n");
2141
2142 if (!priv->scan_request)
2143 return;
2144
2145 ret = rndis_check_bssid_list(usbdev, NULL, NULL);
2146
2147 info.aborted = ret < 0;
2148 cfg80211_scan_done(priv->scan_request, &info);
2149
2150 priv->scan_request = NULL;
2151}
2152
2153static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
2154 struct cfg80211_connect_params *sme)
2155{
2156 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2157 struct usbnet *usbdev = priv->usbdev;
2158 struct ieee80211_channel *channel = sme->channel;
2159 struct ndis_80211_ssid ssid;
2160 int pairwise = RNDIS_WLAN_ALG_NONE;
2161 int groupwise = RNDIS_WLAN_ALG_NONE;
2162 int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
2163 int length, i, ret, chan = -1;
2164
2165 if (channel)
2166 chan = ieee80211_frequency_to_channel(channel->center_freq);
2167
2168 groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
2169 for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
2170 pairwise |=
2171 rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
2172
2173 if (sme->crypto.n_ciphers_pairwise > 0 &&
2174 pairwise == RNDIS_WLAN_ALG_NONE) {
2175 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
2176 return -ENOTSUPP;
2177 }
2178
2179 for (i = 0; i < sme->crypto.n_akm_suites; i++)
2180 keymgmt |=
2181 rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
2182
2183 if (sme->crypto.n_akm_suites > 0 &&
2184 keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
2185 netdev_err(usbdev->net, "Invalid keymgmt\n");
2186 return -ENOTSUPP;
2187 }
2188
2189 netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
2190 sme->ssid, sme->bssid, chan,
2191 sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
2192 groupwise, pairwise, keymgmt);
2193
2194 if (is_associated(usbdev))
2195 disassociate(usbdev, false);
2196
2197 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
2198 if (ret < 0) {
2199 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
2200 ret);
2201 goto err_turn_radio_on;
2202 }
2203
2204 ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
2205 keymgmt);
2206 if (ret < 0) {
2207 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
2208 ret);
2209 goto err_turn_radio_on;
2210 }
2211
2212 set_priv_filter(usbdev);
2213
2214 ret = set_encr_mode(usbdev, pairwise, groupwise);
2215 if (ret < 0) {
2216 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
2217 ret);
2218 goto err_turn_radio_on;
2219 }
2220
2221 if (channel) {
2222 ret = set_channel(usbdev, chan);
2223 if (ret < 0) {
2224 netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
2225 ret);
2226 goto err_turn_radio_on;
2227 }
2228 }
2229
2230 if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
2231 priv->encr_tx_key_index = sme->key_idx;
2232 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
2233 if (ret < 0) {
2234 netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
2235 ret, sme->key_len, sme->key_idx);
2236 goto err_turn_radio_on;
2237 }
2238 }
2239
2240 if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
2241 !is_broadcast_ether_addr(sme->bssid)) {
2242 ret = set_bssid(usbdev, sme->bssid);
2243 if (ret < 0) {
2244 netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
2245 ret);
2246 goto err_turn_radio_on;
2247 }
2248 } else
2249 clear_bssid(usbdev);
2250
2251 length = sme->ssid_len;
2252 if (length > NDIS_802_11_LENGTH_SSID)
2253 length = NDIS_802_11_LENGTH_SSID;
2254
2255 memset(&ssid, 0, sizeof(ssid));
2256 ssid.length = cpu_to_le32(length);
2257 memcpy(ssid.essid, sme->ssid, length);
2258
2259 /* Pause and purge rx queue, so we don't pass packets before
2260 * 'media connect'-indication.
2261 */
2262 usbnet_pause_rx(usbdev);
2263 usbnet_purge_paused_rxq(usbdev);
2264
2265 ret = set_essid(usbdev, &ssid);
2266 if (ret < 0)
2267 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
2268 return ret;
2269
2270err_turn_radio_on:
2271 disassociate(usbdev, true);
2272
2273 return ret;
2274}
2275
2276static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
2277 u16 reason_code)
2278{
2279 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2280 struct usbnet *usbdev = priv->usbdev;
2281
2282 netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
2283
2284 priv->connected = false;
2285 eth_zero_addr(priv->bssid);
2286
2287 return deauthenticate(usbdev);
2288}
2289
2290static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2291 struct cfg80211_ibss_params *params)
2292{
2293 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2294 struct usbnet *usbdev = priv->usbdev;
2295 struct ieee80211_channel *channel = params->chandef.chan;
2296 struct ndis_80211_ssid ssid;
2297 enum nl80211_auth_type auth_type;
2298 int ret, alg, length, chan = -1;
2299
2300 if (channel)
2301 chan = ieee80211_frequency_to_channel(channel->center_freq);
2302
2303 /* TODO: How to handle ad-hoc encryption?
2304 * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
2305 * pre-shared for encryption (open/shared/wpa), is key set before
2306 * join_ibss? Which auth_type to use (not in params)? What about WPA?
2307 */
2308 if (params->privacy) {
2309 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
2310 alg = RNDIS_WLAN_ALG_WEP;
2311 } else {
2312 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2313 alg = RNDIS_WLAN_ALG_NONE;
2314 }
2315
2316 netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
2317 params->ssid, params->bssid, chan, params->privacy);
2318
2319 if (is_associated(usbdev))
2320 disassociate(usbdev, false);
2321
2322 ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
2323 if (ret < 0) {
2324 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
2325 ret);
2326 goto err_turn_radio_on;
2327 }
2328
2329 ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
2330 if (ret < 0) {
2331 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
2332 ret);
2333 goto err_turn_radio_on;
2334 }
2335
2336 set_priv_filter(usbdev);
2337
2338 ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
2339 if (ret < 0) {
2340 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
2341 ret);
2342 goto err_turn_radio_on;
2343 }
2344
2345 if (channel) {
2346 ret = set_channel(usbdev, chan);
2347 if (ret < 0) {
2348 netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
2349 ret);
2350 goto err_turn_radio_on;
2351 }
2352 }
2353
2354 if (params->bssid && !is_zero_ether_addr(params->bssid) &&
2355 !is_broadcast_ether_addr(params->bssid)) {
2356 ret = set_bssid(usbdev, params->bssid);
2357 if (ret < 0) {
2358 netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
2359 ret);
2360 goto err_turn_radio_on;
2361 }
2362 } else
2363 clear_bssid(usbdev);
2364
2365 length = params->ssid_len;
2366 if (length > NDIS_802_11_LENGTH_SSID)
2367 length = NDIS_802_11_LENGTH_SSID;
2368
2369 memset(&ssid, 0, sizeof(ssid));
2370 ssid.length = cpu_to_le32(length);
2371 memcpy(ssid.essid, params->ssid, length);
2372
2373 /* Don't need to pause rx queue for ad-hoc. */
2374 usbnet_purge_paused_rxq(usbdev);
2375 usbnet_resume_rx(usbdev);
2376
2377 ret = set_essid(usbdev, &ssid);
2378 if (ret < 0)
2379 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2380 ret);
2381 return ret;
2382
2383err_turn_radio_on:
2384 disassociate(usbdev, true);
2385
2386 return ret;
2387}
2388
2389static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2390{
2391 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2392 struct usbnet *usbdev = priv->usbdev;
2393
2394 netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2395
2396 priv->connected = false;
2397 eth_zero_addr(priv->bssid);
2398
2399 return deauthenticate(usbdev);
2400}
2401
2402static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2403 u8 key_index, bool pairwise, const u8 *mac_addr,
2404 struct key_params *params)
2405{
2406 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2407 struct usbnet *usbdev = priv->usbdev;
2408 __le32 flags;
2409
2410 netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2411 __func__, key_index, mac_addr, params->cipher);
2412
2413 switch (params->cipher) {
2414 case WLAN_CIPHER_SUITE_WEP40:
2415 case WLAN_CIPHER_SUITE_WEP104:
2416 return add_wep_key(usbdev, params->key, params->key_len,
2417 key_index);
2418 case WLAN_CIPHER_SUITE_TKIP:
2419 case WLAN_CIPHER_SUITE_CCMP:
2420 flags = 0;
2421
2422 if (params->seq && params->seq_len > 0)
2423 flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2424 if (mac_addr)
2425 flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2426 NDIS_80211_ADDKEY_TRANSMIT_KEY;
2427
2428 return add_wpa_key(usbdev, params->key, params->key_len,
2429 key_index, mac_addr, params->seq,
2430 params->seq_len, params->cipher, flags);
2431 default:
2432 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2433 __func__, params->cipher);
2434 return -ENOTSUPP;
2435 }
2436}
2437
2438static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2439 u8 key_index, bool pairwise, const u8 *mac_addr)
2440{
2441 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2442 struct usbnet *usbdev = priv->usbdev;
2443
2444 netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2445
2446 return remove_key(usbdev, key_index, mac_addr);
2447}
2448
2449static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2450 u8 key_index, bool unicast, bool multicast)
2451{
2452 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2453 struct usbnet *usbdev = priv->usbdev;
2454 struct rndis_wlan_encr_key key;
2455
2456 netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2457
2458 if (key_index >= RNDIS_WLAN_NUM_KEYS)
2459 return -ENOENT;
2460
2461 priv->encr_tx_key_index = key_index;
2462
2463 if (is_wpa_key(priv, key_index))
2464 return 0;
2465
2466 key = priv->encr_keys[key_index];
2467
2468 return add_wep_key(usbdev, key.material, key.len, key_index);
2469}
2470
2471static void rndis_fill_station_info(struct usbnet *usbdev,
2472 struct station_info *sinfo)
2473{
2474 __le32 linkspeed, rssi;
2475 int ret, len;
2476
2477 memset(sinfo, 0, sizeof(*sinfo));
2478
2479 len = sizeof(linkspeed);
2480 ret = rndis_query_oid(usbdev, RNDIS_OID_GEN_LINK_SPEED, &linkspeed, &len);
2481 if (ret == 0) {
2482 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2483 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
2484 }
2485
2486 len = sizeof(rssi);
2487 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2488 &rssi, &len);
2489 if (ret == 0) {
2490 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2491 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
2492 }
2493}
2494
2495static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2496 const u8 *mac, struct station_info *sinfo)
2497{
2498 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2499 struct usbnet *usbdev = priv->usbdev;
2500
2501 if (!ether_addr_equal(priv->bssid, mac))
2502 return -ENOENT;
2503
2504 rndis_fill_station_info(usbdev, sinfo);
2505
2506 return 0;
2507}
2508
2509static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2510 int idx, u8 *mac, struct station_info *sinfo)
2511{
2512 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2513 struct usbnet *usbdev = priv->usbdev;
2514
2515 if (idx != 0)
2516 return -ENOENT;
2517
2518 memcpy(mac, priv->bssid, ETH_ALEN);
2519
2520 rndis_fill_station_info(usbdev, sinfo);
2521
2522 return 0;
2523}
2524
2525static int rndis_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2526 struct cfg80211_pmksa *pmksa)
2527{
2528 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2529 struct usbnet *usbdev = priv->usbdev;
2530 struct ndis_80211_pmkid *pmkids;
2531 u32 *tmp = (u32 *)pmksa->pmkid;
2532
2533 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2534 pmksa->bssid,
2535 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2536 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2537
2538 pmkids = get_device_pmkids(usbdev);
2539 if (IS_ERR(pmkids)) {
2540 /* couldn't read PMKID cache from device */
2541 return PTR_ERR(pmkids);
2542 }
2543
2544 pmkids = update_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2545 if (IS_ERR(pmkids)) {
2546 /* not found, list full, etc */
2547 return PTR_ERR(pmkids);
2548 }
2549
2550 return set_device_pmkids(usbdev, pmkids);
2551}
2552
2553static int rndis_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
2554 struct cfg80211_pmksa *pmksa)
2555{
2556 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2557 struct usbnet *usbdev = priv->usbdev;
2558 struct ndis_80211_pmkid *pmkids;
2559 u32 *tmp = (u32 *)pmksa->pmkid;
2560
2561 netdev_dbg(usbdev->net, "%s(%pM, %08X:%08X:%08X:%08X)\n", __func__,
2562 pmksa->bssid,
2563 cpu_to_be32(tmp[0]), cpu_to_be32(tmp[1]),
2564 cpu_to_be32(tmp[2]), cpu_to_be32(tmp[3]));
2565
2566 pmkids = get_device_pmkids(usbdev);
2567 if (IS_ERR(pmkids)) {
2568 /* Couldn't read PMKID cache from device */
2569 return PTR_ERR(pmkids);
2570 }
2571
2572 pmkids = remove_pmkid(usbdev, pmkids, pmksa, wiphy->max_num_pmkids);
2573 if (IS_ERR(pmkids)) {
2574 /* not found, etc */
2575 return PTR_ERR(pmkids);
2576 }
2577
2578 return set_device_pmkids(usbdev, pmkids);
2579}
2580
2581static int rndis_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
2582{
2583 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2584 struct usbnet *usbdev = priv->usbdev;
2585 struct ndis_80211_pmkid pmkid;
2586
2587 netdev_dbg(usbdev->net, "%s()\n", __func__);
2588
2589 memset(&pmkid, 0, sizeof(pmkid));
2590
2591 pmkid.length = cpu_to_le32(sizeof(pmkid));
2592 pmkid.bssid_info_count = cpu_to_le32(0);
2593
2594 return rndis_set_oid(usbdev, RNDIS_OID_802_11_PMKID,
2595 &pmkid, sizeof(pmkid));
2596}
2597
2598static int rndis_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2599 bool enabled, int timeout)
2600{
2601 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2602 struct usbnet *usbdev = priv->usbdev;
2603 int power_mode;
2604 __le32 mode;
2605 int ret;
2606
2607 if (priv->device_type != RNDIS_BCM4320B)
2608 return -ENOTSUPP;
2609
2610 netdev_dbg(usbdev->net, "%s(): %s, %d\n", __func__,
2611 enabled ? "enabled" : "disabled",
2612 timeout);
2613
2614 if (enabled)
2615 power_mode = NDIS_80211_POWER_MODE_FAST_PSP;
2616 else
2617 power_mode = NDIS_80211_POWER_MODE_CAM;
2618
2619 if (power_mode == priv->power_mode)
2620 return 0;
2621
2622 priv->power_mode = power_mode;
2623
2624 mode = cpu_to_le32(power_mode);
2625 ret = rndis_set_oid(usbdev, RNDIS_OID_802_11_POWER_MODE,
2626 &mode, sizeof(mode));
2627
2628 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_POWER_MODE -> %d\n",
2629 __func__, ret);
2630
2631 return ret;
2632}
2633
2634static int rndis_set_cqm_rssi_config(struct wiphy *wiphy,
2635 struct net_device *dev,
2636 s32 rssi_thold, u32 rssi_hyst)
2637{
2638 struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2639
2640 priv->cqm_rssi_thold = rssi_thold;
2641 priv->cqm_rssi_hyst = rssi_hyst;
2642 priv->last_cqm_event_rssi = 0;
2643
2644 return 0;
2645}
2646
2647static void rndis_wlan_craft_connected_bss(struct usbnet *usbdev, u8 *bssid,
2648 struct ndis_80211_assoc_info *info)
2649{
2650 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2651 struct ieee80211_channel *channel;
2652 struct ndis_80211_ssid ssid;
2653 struct cfg80211_bss *bss;
2654 s32 signal;
2655 u64 timestamp;
2656 u16 capability;
2657 u32 beacon_period = 0;
2658 __le32 rssi;
2659 u8 ie_buf[34];
2660 int len, ret, ie_len;
2661
2662 /* Get signal quality, in case of error use rssi=0 and ignore error. */
2663 len = sizeof(rssi);
2664 rssi = 0;
2665 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
2666 &rssi, &len);
2667 signal = level_to_qual(le32_to_cpu(rssi));
2668
2669 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_RSSI -> %d, "
2670 "rssi:%d, qual: %d\n", __func__, ret, le32_to_cpu(rssi),
2671 level_to_qual(le32_to_cpu(rssi)));
2672
2673 /* Get AP capabilities */
2674 if (info) {
2675 capability = le16_to_cpu(info->resp_ie.capa);
2676 } else {
2677 /* Set atleast ESS/IBSS capability */
2678 capability = (priv->infra_mode == NDIS_80211_INFRA_INFRA) ?
2679 WLAN_CAPABILITY_ESS : WLAN_CAPABILITY_IBSS;
2680 }
2681
2682 /* Get channel and beacon interval */
2683 channel = get_current_channel(usbdev, &beacon_period);
2684 if (!channel) {
2685 netdev_warn(usbdev->net, "%s(): could not get channel.\n",
2686 __func__);
2687 return;
2688 }
2689
2690 /* Get SSID, in case of error, use zero length SSID and ignore error. */
2691 len = sizeof(ssid);
2692 memset(&ssid, 0, sizeof(ssid));
2693 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_SSID,
2694 &ssid, &len);
2695 netdev_dbg(usbdev->net, "%s(): RNDIS_OID_802_11_SSID -> %d, len: %d, ssid: "
2696 "'%.32s'\n", __func__, ret,
2697 le32_to_cpu(ssid.length), ssid.essid);
2698
2699 if (le32_to_cpu(ssid.length) > 32)
2700 ssid.length = cpu_to_le32(32);
2701
2702 ie_buf[0] = WLAN_EID_SSID;
2703 ie_buf[1] = le32_to_cpu(ssid.length);
2704 memcpy(&ie_buf[2], ssid.essid, le32_to_cpu(ssid.length));
2705
2706 ie_len = le32_to_cpu(ssid.length) + 2;
2707
2708 /* no tsf */
2709 timestamp = 0;
2710
2711 netdev_dbg(usbdev->net, "%s(): channel:%d(freq), bssid:[%pM], tsf:%d, "
2712 "capa:%x, beacon int:%d, resp_ie(len:%d, essid:'%.32s'), "
2713 "signal:%d\n", __func__, (channel ? channel->center_freq : -1),
2714 bssid, (u32)timestamp, capability, beacon_period, ie_len,
2715 ssid.essid, signal);
2716
2717 bss = cfg80211_inform_bss(priv->wdev.wiphy, channel,
2718 CFG80211_BSS_FTYPE_UNKNOWN, bssid,
2719 timestamp, capability, beacon_period,
2720 ie_buf, ie_len, signal, GFP_KERNEL);
2721 cfg80211_put_bss(priv->wdev.wiphy, bss);
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 unsigned int resp_ie_len, req_ie_len;
2733 unsigned int offset;
2734 u8 *req_ie, *resp_ie;
2735 int ret;
2736 bool roamed = false;
2737 bool match_bss;
2738
2739 if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2740 /* received media connect indication while connected, either
2741 * device reassociated with same AP or roamed to new. */
2742 roamed = true;
2743 }
2744
2745 req_ie_len = 0;
2746 resp_ie_len = 0;
2747 req_ie = NULL;
2748 resp_ie = NULL;
2749
2750 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2751 info = kzalloc(CONTROL_BUFFER_SIZE, GFP_KERNEL);
2752 if (!info) {
2753 /* No memory? Try resume work later */
2754 set_bit(WORK_LINK_UP, &priv->work_pending);
2755 queue_work(priv->workqueue, &priv->work);
2756 return;
2757 }
2758
2759 /* Get association info IEs from device. */
2760 ret = get_association_info(usbdev, info, CONTROL_BUFFER_SIZE);
2761 if (!ret) {
2762 req_ie_len = le32_to_cpu(info->req_ie_length);
2763 if (req_ie_len > CONTROL_BUFFER_SIZE)
2764 req_ie_len = CONTROL_BUFFER_SIZE;
2765 if (req_ie_len != 0) {
2766 offset = le32_to_cpu(info->offset_req_ies);
2767
2768 if (offset > CONTROL_BUFFER_SIZE)
2769 offset = CONTROL_BUFFER_SIZE;
2770
2771 req_ie = (u8 *)info + offset;
2772
2773 if (offset + req_ie_len > CONTROL_BUFFER_SIZE)
2774 req_ie_len =
2775 CONTROL_BUFFER_SIZE - offset;
2776 }
2777
2778 resp_ie_len = le32_to_cpu(info->resp_ie_length);
2779 if (resp_ie_len > CONTROL_BUFFER_SIZE)
2780 resp_ie_len = CONTROL_BUFFER_SIZE;
2781 if (resp_ie_len != 0) {
2782 offset = le32_to_cpu(info->offset_resp_ies);
2783
2784 if (offset > CONTROL_BUFFER_SIZE)
2785 offset = CONTROL_BUFFER_SIZE;
2786
2787 resp_ie = (u8 *)info + offset;
2788
2789 if (offset + resp_ie_len > CONTROL_BUFFER_SIZE)
2790 resp_ie_len =
2791 CONTROL_BUFFER_SIZE - offset;
2792 }
2793 } else {
2794 /* Since rndis_wlan_craft_connected_bss() might use info
2795 * later and expects info to contain valid data if
2796 * non-null, free info and set NULL here.
2797 */
2798 kfree(info);
2799 info = NULL;
2800 }
2801 } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2802 return;
2803
2804 ret = get_bssid(usbdev, bssid);
2805 if (ret < 0)
2806 memset(bssid, 0, sizeof(bssid));
2807
2808 netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2809 bssid, roamed ? " roamed" : "");
2810
2811 /* Internal bss list in device should contain at least the currently
2812 * connected bss and we can get it to cfg80211 with
2813 * rndis_check_bssid_list().
2814 *
2815 * NDIS spec says: "If the device is associated, but the associated
2816 * BSSID is not in its BSSID scan list, then the driver must add an
2817 * entry for the BSSID at the end of the data that it returns in
2818 * response to query of RNDIS_OID_802_11_BSSID_LIST."
2819 *
2820 * NOTE: Seems to be true for BCM4320b variant, but not BCM4320a.
2821 */
2822 match_bss = false;
2823 rndis_check_bssid_list(usbdev, bssid, &match_bss);
2824
2825 if (!is_zero_ether_addr(bssid) && !match_bss) {
2826 /* Couldn't get bss from device, we need to manually craft bss
2827 * for cfg80211.
2828 */
2829 rndis_wlan_craft_connected_bss(usbdev, bssid, info);
2830 }
2831
2832 if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2833 if (!roamed) {
2834 cfg80211_connect_result(usbdev->net, bssid, req_ie,
2835 req_ie_len, resp_ie,
2836 resp_ie_len, 0, GFP_KERNEL);
2837 } else {
2838 struct cfg80211_roam_info roam_info = {
2839 .channel = get_current_channel(usbdev, NULL),
2840 .bssid = bssid,
2841 .req_ie = req_ie,
2842 .req_ie_len = req_ie_len,
2843 .resp_ie = resp_ie,
2844 .resp_ie_len = resp_ie_len,
2845 };
2846
2847 cfg80211_roamed(usbdev->net, &roam_info, GFP_KERNEL);
2848 }
2849 } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2850 cfg80211_ibss_joined(usbdev->net, bssid,
2851 get_current_channel(usbdev, NULL),
2852 GFP_KERNEL);
2853
2854 kfree(info);
2855
2856 priv->connected = true;
2857 memcpy(priv->bssid, bssid, ETH_ALEN);
2858
2859 usbnet_resume_rx(usbdev);
2860 netif_carrier_on(usbdev->net);
2861}
2862
2863static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2864{
2865 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2866
2867 if (priv->connected) {
2868 priv->connected = false;
2869 eth_zero_addr(priv->bssid);
2870
2871 deauthenticate(usbdev);
2872
2873 cfg80211_disconnected(usbdev->net, 0, NULL, 0, true, GFP_KERNEL);
2874 }
2875
2876 netif_carrier_off(usbdev->net);
2877}
2878
2879static void rndis_wlan_worker(struct work_struct *work)
2880{
2881 struct rndis_wlan_private *priv =
2882 container_of(work, struct rndis_wlan_private, work);
2883 struct usbnet *usbdev = priv->usbdev;
2884
2885 if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2886 rndis_wlan_do_link_up_work(usbdev);
2887
2888 if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2889 rndis_wlan_do_link_down_work(usbdev);
2890
2891 if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2892 set_multicast_list(usbdev);
2893}
2894
2895static void rndis_wlan_set_multicast_list(struct net_device *dev)
2896{
2897 struct usbnet *usbdev = netdev_priv(dev);
2898 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2899
2900 if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2901 return;
2902
2903 set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2904 queue_work(priv->workqueue, &priv->work);
2905}
2906
2907static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2908 struct ndis_80211_status_indication *indication,
2909 int len)
2910{
2911 u8 *buf;
2912 const char *type;
2913 int flags, buflen, key_id;
2914 bool pairwise_error, group_error;
2915 struct ndis_80211_auth_request *auth_req;
2916 enum nl80211_key_type key_type;
2917
2918 /* must have at least one array entry */
2919 if (len < offsetof(struct ndis_80211_status_indication, u) +
2920 sizeof(struct ndis_80211_auth_request)) {
2921 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2922 len);
2923 return;
2924 }
2925
2926 buf = (void *)&indication->u.auth_request[0];
2927 buflen = len - offsetof(struct ndis_80211_status_indication, u);
2928
2929 while (buflen >= sizeof(*auth_req)) {
2930 auth_req = (void *)buf;
2931 type = "unknown";
2932 flags = le32_to_cpu(auth_req->flags);
2933 pairwise_error = false;
2934 group_error = false;
2935
2936 if (flags & 0x1)
2937 type = "reauth request";
2938 if (flags & 0x2)
2939 type = "key update request";
2940 if (flags & 0x6) {
2941 pairwise_error = true;
2942 type = "pairwise_error";
2943 }
2944 if (flags & 0xe) {
2945 group_error = true;
2946 type = "group_error";
2947 }
2948
2949 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2950 type, le32_to_cpu(auth_req->flags));
2951
2952 if (pairwise_error) {
2953 key_type = NL80211_KEYTYPE_PAIRWISE;
2954 key_id = -1;
2955
2956 cfg80211_michael_mic_failure(usbdev->net,
2957 auth_req->bssid,
2958 key_type, key_id, NULL,
2959 GFP_KERNEL);
2960 }
2961
2962 if (group_error) {
2963 key_type = NL80211_KEYTYPE_GROUP;
2964 key_id = -1;
2965
2966 cfg80211_michael_mic_failure(usbdev->net,
2967 auth_req->bssid,
2968 key_type, key_id, NULL,
2969 GFP_KERNEL);
2970 }
2971
2972 buflen -= le32_to_cpu(auth_req->length);
2973 buf += le32_to_cpu(auth_req->length);
2974 }
2975}
2976
2977static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2978 struct ndis_80211_status_indication *indication,
2979 int len)
2980{
2981 struct ndis_80211_pmkid_cand_list *cand_list;
2982 int list_len, expected_len, i;
2983
2984 if (len < offsetof(struct ndis_80211_status_indication, u) +
2985 sizeof(struct ndis_80211_pmkid_cand_list)) {
2986 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2987 len);
2988 return;
2989 }
2990
2991 list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2992 sizeof(struct ndis_80211_pmkid_candidate);
2993 expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2994 offsetof(struct ndis_80211_status_indication, u);
2995
2996 if (len < expected_len) {
2997 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2998 len, expected_len);
2999 return;
3000 }
3001
3002 cand_list = &indication->u.cand_list;
3003
3004 netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
3005 le32_to_cpu(cand_list->version),
3006 le32_to_cpu(cand_list->num_candidates));
3007
3008 if (le32_to_cpu(cand_list->version) != 1)
3009 return;
3010
3011 for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
3012 struct ndis_80211_pmkid_candidate *cand =
3013 &cand_list->candidate_list[i];
3014 bool preauth = !!(cand->flags & NDIS_80211_PMKID_CAND_PREAUTH);
3015
3016 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, preauth: %d, bssid: %pM\n",
3017 i, le32_to_cpu(cand->flags), preauth, cand->bssid);
3018
3019 cfg80211_pmksa_candidate_notify(usbdev->net, i, cand->bssid,
3020 preauth, GFP_ATOMIC);
3021 }
3022}
3023
3024static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
3025 struct rndis_indicate *msg, int buflen)
3026{
3027 struct ndis_80211_status_indication *indication;
3028 unsigned int len, offset;
3029
3030 offset = offsetof(struct rndis_indicate, status) +
3031 le32_to_cpu(msg->offset);
3032 len = le32_to_cpu(msg->length);
3033
3034 if (len < 8) {
3035 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
3036 len);
3037 return;
3038 }
3039
3040 if (len > buflen || offset > buflen || offset + len > buflen) {
3041 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
3042 offset + len, buflen);
3043 return;
3044 }
3045
3046 indication = (void *)((u8 *)msg + offset);
3047
3048 switch (le32_to_cpu(indication->status_type)) {
3049 case NDIS_80211_STATUSTYPE_RADIOSTATE:
3050 netdev_info(usbdev->net, "radio state indication: %i\n",
3051 le32_to_cpu(indication->u.radio_status));
3052 return;
3053
3054 case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
3055 netdev_info(usbdev->net, "media stream mode indication: %i\n",
3056 le32_to_cpu(indication->u.media_stream_mode));
3057 return;
3058
3059 case NDIS_80211_STATUSTYPE_AUTHENTICATION:
3060 rndis_wlan_auth_indication(usbdev, indication, len);
3061 return;
3062
3063 case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
3064 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
3065 return;
3066
3067 default:
3068 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
3069 le32_to_cpu(indication->status_type));
3070 }
3071}
3072
3073static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
3074{
3075 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3076 struct rndis_indicate *msg = ind;
3077
3078 switch (le32_to_cpu(msg->status)) {
3079 case RNDIS_STATUS_MEDIA_CONNECT:
3080 if (priv->current_command_oid == RNDIS_OID_802_11_ADD_KEY) {
3081 /* RNDIS_OID_802_11_ADD_KEY causes sometimes extra
3082 * "media connect" indications which confuses driver
3083 * and userspace to think that device is
3084 * roaming/reassociating when it isn't.
3085 */
3086 netdev_dbg(usbdev->net, "ignored RNDIS_OID_802_11_ADD_KEY triggered 'media connect'\n");
3087 return;
3088 }
3089
3090 usbnet_pause_rx(usbdev);
3091
3092 netdev_info(usbdev->net, "media connect\n");
3093
3094 /* queue work to avoid recursive calls into rndis_command */
3095 set_bit(WORK_LINK_UP, &priv->work_pending);
3096 queue_work(priv->workqueue, &priv->work);
3097 break;
3098
3099 case RNDIS_STATUS_MEDIA_DISCONNECT:
3100 netdev_info(usbdev->net, "media disconnect\n");
3101
3102 /* queue work to avoid recursive calls into rndis_command */
3103 set_bit(WORK_LINK_DOWN, &priv->work_pending);
3104 queue_work(priv->workqueue, &priv->work);
3105 break;
3106
3107 case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
3108 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
3109 break;
3110
3111 default:
3112 netdev_info(usbdev->net, "indication: 0x%08x\n",
3113 le32_to_cpu(msg->status));
3114 break;
3115 }
3116}
3117
3118static int rndis_wlan_get_caps(struct usbnet *usbdev, struct wiphy *wiphy)
3119{
3120 struct {
3121 __le32 num_items;
3122 __le32 items[8];
3123 } networks_supported;
3124 struct ndis_80211_capability *caps;
3125 u8 caps_buf[sizeof(*caps) + sizeof(caps->auth_encr_pair) * 16];
3126 int len, retval, i, n;
3127 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3128
3129 /* determine supported modes */
3130 len = sizeof(networks_supported);
3131 retval = rndis_query_oid(usbdev,
3132 RNDIS_OID_802_11_NETWORK_TYPES_SUPPORTED,
3133 &networks_supported, &len);
3134 if (retval >= 0) {
3135 n = le32_to_cpu(networks_supported.num_items);
3136 if (n > 8)
3137 n = 8;
3138 for (i = 0; i < n; i++) {
3139 switch (le32_to_cpu(networks_supported.items[i])) {
3140 case NDIS_80211_TYPE_FREQ_HOP:
3141 case NDIS_80211_TYPE_DIRECT_SEQ:
3142 priv->caps |= CAP_MODE_80211B;
3143 break;
3144 case NDIS_80211_TYPE_OFDM_A:
3145 priv->caps |= CAP_MODE_80211A;
3146 break;
3147 case NDIS_80211_TYPE_OFDM_G:
3148 priv->caps |= CAP_MODE_80211G;
3149 break;
3150 }
3151 }
3152 }
3153
3154 /* get device 802.11 capabilities, number of PMKIDs */
3155 caps = (struct ndis_80211_capability *)caps_buf;
3156 len = sizeof(caps_buf);
3157 retval = rndis_query_oid(usbdev,
3158 RNDIS_OID_802_11_CAPABILITY,
3159 caps, &len);
3160 if (retval >= 0) {
3161 netdev_dbg(usbdev->net, "RNDIS_OID_802_11_CAPABILITY -> len %d, "
3162 "ver %d, pmkids %d, auth-encr-pairs %d\n",
3163 le32_to_cpu(caps->length),
3164 le32_to_cpu(caps->version),
3165 le32_to_cpu(caps->num_pmkids),
3166 le32_to_cpu(caps->num_auth_encr_pair));
3167 wiphy->max_num_pmkids = le32_to_cpu(caps->num_pmkids);
3168 } else
3169 wiphy->max_num_pmkids = 0;
3170
3171 return retval;
3172}
3173
3174static void rndis_do_cqm(struct usbnet *usbdev, s32 rssi)
3175{
3176 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3177 enum nl80211_cqm_rssi_threshold_event event;
3178 int thold, hyst, last_event;
3179
3180 if (priv->cqm_rssi_thold >= 0 || rssi >= 0)
3181 return;
3182 if (priv->infra_mode != NDIS_80211_INFRA_INFRA)
3183 return;
3184
3185 last_event = priv->last_cqm_event_rssi;
3186 thold = priv->cqm_rssi_thold;
3187 hyst = priv->cqm_rssi_hyst;
3188
3189 if (rssi < thold && (last_event == 0 || rssi < last_event - hyst))
3190 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW;
3191 else if (rssi > thold && (last_event == 0 || rssi > last_event + hyst))
3192 event = NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH;
3193 else
3194 return;
3195
3196 priv->last_cqm_event_rssi = rssi;
3197 cfg80211_cqm_rssi_notify(usbdev->net, event, rssi, GFP_KERNEL);
3198}
3199
3200#define DEVICE_POLLER_JIFFIES (HZ)
3201static void rndis_device_poller(struct work_struct *work)
3202{
3203 struct rndis_wlan_private *priv =
3204 container_of(work, struct rndis_wlan_private,
3205 dev_poller_work.work);
3206 struct usbnet *usbdev = priv->usbdev;
3207 __le32 rssi, tmp;
3208 int len, ret, j;
3209 int update_jiffies = DEVICE_POLLER_JIFFIES;
3210 void *buf;
3211
3212 /* Only check/do workaround when connected. Calling is_associated()
3213 * also polls device with rndis_command() and catches for media link
3214 * indications.
3215 */
3216 if (!is_associated(usbdev)) {
3217 /* Workaround bad scanning in BCM4320a devices with active
3218 * background scanning when not associated.
3219 */
3220 if (priv->device_type == RNDIS_BCM4320A && priv->radio_on &&
3221 !priv->scan_request) {
3222 /* Get previous scan results */
3223 rndis_check_bssid_list(usbdev, NULL, NULL);
3224
3225 /* Initiate new scan */
3226 rndis_start_bssid_list_scan(usbdev);
3227 }
3228
3229 goto end;
3230 }
3231
3232 len = sizeof(rssi);
3233 ret = rndis_query_oid(usbdev, RNDIS_OID_802_11_RSSI,
3234 &rssi, &len);
3235 if (ret == 0) {
3236 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
3237 rndis_do_cqm(usbdev, le32_to_cpu(rssi));
3238 }
3239
3240 netdev_dbg(usbdev->net, "dev-poller: RNDIS_OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
3241 ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
3242
3243 /* Workaround transfer stalls on poor quality links.
3244 * TODO: find right way to fix these stalls (as stalls do not happen
3245 * with ndiswrapper/windows driver). */
3246 if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
3247 /* Decrease stats worker interval to catch stalls.
3248 * faster. Faster than 400-500ms causes packet loss,
3249 * Slower doesn't catch stalls fast enough.
3250 */
3251 j = msecs_to_jiffies(priv->param_workaround_interval);
3252 if (j > DEVICE_POLLER_JIFFIES)
3253 j = DEVICE_POLLER_JIFFIES;
3254 else if (j <= 0)
3255 j = 1;
3256 update_jiffies = j;
3257
3258 /* Send scan OID. Use of both OIDs is required to get device
3259 * working.
3260 */
3261 tmp = cpu_to_le32(1);
3262 rndis_set_oid(usbdev,
3263 RNDIS_OID_802_11_BSSID_LIST_SCAN,
3264 &tmp, sizeof(tmp));
3265
3266 len = CONTROL_BUFFER_SIZE;
3267 buf = kmalloc(len, GFP_KERNEL);
3268 if (!buf)
3269 goto end;
3270
3271 rndis_query_oid(usbdev,
3272 RNDIS_OID_802_11_BSSID_LIST,
3273 buf, &len);
3274 kfree(buf);
3275 }
3276
3277end:
3278 if (update_jiffies >= HZ)
3279 update_jiffies = round_jiffies_relative(update_jiffies);
3280 else {
3281 j = round_jiffies_relative(update_jiffies);
3282 if (abs(j - update_jiffies) <= 10)
3283 update_jiffies = j;
3284 }
3285
3286 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3287 update_jiffies);
3288}
3289
3290/*
3291 * driver/device initialization
3292 */
3293static void rndis_copy_module_params(struct usbnet *usbdev, int device_type)
3294{
3295 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3296
3297 priv->device_type = device_type;
3298
3299 priv->param_country[0] = modparam_country[0];
3300 priv->param_country[1] = modparam_country[1];
3301 priv->param_country[2] = 0;
3302 priv->param_frameburst = modparam_frameburst;
3303 priv->param_afterburner = modparam_afterburner;
3304 priv->param_power_save = modparam_power_save;
3305 priv->param_power_output = modparam_power_output;
3306 priv->param_roamtrigger = modparam_roamtrigger;
3307 priv->param_roamdelta = modparam_roamdelta;
3308
3309 priv->param_country[0] = toupper(priv->param_country[0]);
3310 priv->param_country[1] = toupper(priv->param_country[1]);
3311 /* doesn't support EU as country code, use FI instead */
3312 if (!strcmp(priv->param_country, "EU"))
3313 strcpy(priv->param_country, "FI");
3314
3315 if (priv->param_power_save < 0)
3316 priv->param_power_save = 0;
3317 else if (priv->param_power_save > 2)
3318 priv->param_power_save = 2;
3319
3320 if (priv->param_power_output < 0)
3321 priv->param_power_output = 0;
3322 else if (priv->param_power_output > 3)
3323 priv->param_power_output = 3;
3324
3325 if (priv->param_roamtrigger < -80)
3326 priv->param_roamtrigger = -80;
3327 else if (priv->param_roamtrigger > -60)
3328 priv->param_roamtrigger = -60;
3329
3330 if (priv->param_roamdelta < 0)
3331 priv->param_roamdelta = 0;
3332 else if (priv->param_roamdelta > 2)
3333 priv->param_roamdelta = 2;
3334
3335 if (modparam_workaround_interval < 0)
3336 priv->param_workaround_interval = 500;
3337 else
3338 priv->param_workaround_interval = modparam_workaround_interval;
3339}
3340
3341static int unknown_early_init(struct usbnet *usbdev)
3342{
3343 /* copy module parameters for unknown so that iwconfig reports txpower
3344 * and workaround parameter is copied to private structure correctly.
3345 */
3346 rndis_copy_module_params(usbdev, RNDIS_UNKNOWN);
3347
3348 /* This is unknown device, so do not try set configuration parameters.
3349 */
3350
3351 return 0;
3352}
3353
3354static int bcm4320a_early_init(struct usbnet *usbdev)
3355{
3356 /* copy module parameters for bcm4320a so that iwconfig reports txpower
3357 * and workaround parameter is copied to private structure correctly.
3358 */
3359 rndis_copy_module_params(usbdev, RNDIS_BCM4320A);
3360
3361 /* bcm4320a doesn't handle configuration parameters well. Try
3362 * set any and you get partially zeroed mac and broken device.
3363 */
3364
3365 return 0;
3366}
3367
3368static int bcm4320b_early_init(struct usbnet *usbdev)
3369{
3370 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3371 char buf[8];
3372
3373 rndis_copy_module_params(usbdev, RNDIS_BCM4320B);
3374
3375 /* Early initialization settings, setting these won't have effect
3376 * if called after generic_rndis_bind().
3377 */
3378
3379 rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
3380 rndis_set_config_parameter_str(usbdev, "FrameBursting",
3381 priv->param_frameburst ? "1" : "0");
3382 rndis_set_config_parameter_str(usbdev, "Afterburner",
3383 priv->param_afterburner ? "1" : "0");
3384 sprintf(buf, "%d", priv->param_power_save);
3385 rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
3386 sprintf(buf, "%d", priv->param_power_output);
3387 rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
3388 sprintf(buf, "%d", priv->param_roamtrigger);
3389 rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
3390 sprintf(buf, "%d", priv->param_roamdelta);
3391 rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
3392
3393 return 0;
3394}
3395
3396/* same as rndis_netdev_ops but with local multicast handler */
3397static const struct net_device_ops rndis_wlan_netdev_ops = {
3398 .ndo_open = usbnet_open,
3399 .ndo_stop = usbnet_stop,
3400 .ndo_start_xmit = usbnet_start_xmit,
3401 .ndo_tx_timeout = usbnet_tx_timeout,
3402 .ndo_get_stats64 = usbnet_get_stats64,
3403 .ndo_set_mac_address = eth_mac_addr,
3404 .ndo_validate_addr = eth_validate_addr,
3405 .ndo_set_rx_mode = rndis_wlan_set_multicast_list,
3406};
3407
3408static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
3409{
3410 struct wiphy *wiphy;
3411 struct rndis_wlan_private *priv;
3412 int retval, len;
3413 __le32 tmp;
3414
3415 /* allocate wiphy and rndis private data
3416 * NOTE: We only support a single virtual interface, so wiphy
3417 * and wireless_dev are somewhat synonymous for this device.
3418 */
3419 wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
3420 if (!wiphy)
3421 return -ENOMEM;
3422
3423 priv = wiphy_priv(wiphy);
3424 usbdev->net->ieee80211_ptr = &priv->wdev;
3425 priv->wdev.wiphy = wiphy;
3426 priv->wdev.iftype = NL80211_IFTYPE_STATION;
3427
3428 /* These have to be initialized before calling generic_rndis_bind().
3429 * Otherwise we'll be in big trouble in rndis_wlan_early_init().
3430 */
3431 usbdev->driver_priv = priv;
3432 priv->usbdev = usbdev;
3433
3434 mutex_init(&priv->command_lock);
3435
3436 /* because rndis_command() sleeps we need to use workqueue */
3437 priv->workqueue = create_singlethread_workqueue("rndis_wlan");
3438 if (!priv->workqueue) {
3439 wiphy_free(wiphy);
3440 return -ENOMEM;
3441 }
3442 INIT_WORK(&priv->work, rndis_wlan_worker);
3443 INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
3444 INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
3445
3446 /* try bind rndis_host */
3447 retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
3448 if (retval < 0)
3449 goto fail;
3450
3451 /* generic_rndis_bind set packet filter to multicast_all+
3452 * promisc mode which doesn't work well for our devices (device
3453 * picks up rssi to closest station instead of to access point).
3454 *
3455 * rndis_host wants to avoid all OID as much as possible
3456 * so do promisc/multicast handling in rndis_wlan.
3457 */
3458 usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
3459
3460 tmp = cpu_to_le32(RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST);
3461 retval = rndis_set_oid(usbdev,
3462 RNDIS_OID_GEN_CURRENT_PACKET_FILTER,
3463 &tmp, sizeof(tmp));
3464
3465 len = sizeof(tmp);
3466 retval = rndis_query_oid(usbdev,
3467 RNDIS_OID_802_3_MAXIMUM_LIST_SIZE,
3468 &tmp, &len);
3469 priv->multicast_size = le32_to_cpu(tmp);
3470 if (retval < 0 || priv->multicast_size < 0)
3471 priv->multicast_size = 0;
3472 if (priv->multicast_size > 0)
3473 usbdev->net->flags |= IFF_MULTICAST;
3474 else
3475 usbdev->net->flags &= ~IFF_MULTICAST;
3476
3477 /* fill-out wiphy structure and register w/ cfg80211 */
3478 memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
3479 wiphy->privid = rndis_wiphy_privid;
3480 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
3481 | BIT(NL80211_IFTYPE_ADHOC);
3482 wiphy->max_scan_ssids = 1;
3483
3484 /* TODO: fill-out band/encr information based on priv->caps */
3485 rndis_wlan_get_caps(usbdev, wiphy);
3486
3487 memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
3488 memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
3489 priv->band.channels = priv->channels;
3490 priv->band.n_channels = ARRAY_SIZE(rndis_channels);
3491 priv->band.bitrates = priv->rates;
3492 priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
3493 wiphy->bands[NL80211_BAND_2GHZ] = &priv->band;
3494 wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
3495
3496 memcpy(priv->cipher_suites, rndis_cipher_suites,
3497 sizeof(rndis_cipher_suites));
3498 wiphy->cipher_suites = priv->cipher_suites;
3499 wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
3500
3501 set_wiphy_dev(wiphy, &usbdev->udev->dev);
3502
3503 if (wiphy_register(wiphy)) {
3504 retval = -ENODEV;
3505 goto fail;
3506 }
3507
3508 set_default_iw_params(usbdev);
3509
3510 priv->power_mode = -1;
3511
3512 /* set default rts/frag */
3513 rndis_set_wiphy_params(wiphy,
3514 WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
3515
3516 /* turn radio off on init */
3517 priv->radio_on = false;
3518 disassociate(usbdev, false);
3519 netif_carrier_off(usbdev->net);
3520
3521 return 0;
3522
3523fail:
3524 cancel_delayed_work_sync(&priv->dev_poller_work);
3525 cancel_delayed_work_sync(&priv->scan_work);
3526 cancel_work_sync(&priv->work);
3527 flush_workqueue(priv->workqueue);
3528 destroy_workqueue(priv->workqueue);
3529
3530 wiphy_free(wiphy);
3531 return retval;
3532}
3533
3534static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
3535{
3536 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3537
3538 /* turn radio off */
3539 disassociate(usbdev, false);
3540
3541 cancel_delayed_work_sync(&priv->dev_poller_work);
3542 cancel_delayed_work_sync(&priv->scan_work);
3543 cancel_work_sync(&priv->work);
3544 flush_workqueue(priv->workqueue);
3545 destroy_workqueue(priv->workqueue);
3546
3547 rndis_unbind(usbdev, intf);
3548
3549 wiphy_unregister(priv->wdev.wiphy);
3550 wiphy_free(priv->wdev.wiphy);
3551}
3552
3553static int rndis_wlan_reset(struct usbnet *usbdev)
3554{
3555 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3556 int retval;
3557
3558 netdev_dbg(usbdev->net, "%s()\n", __func__);
3559
3560 retval = rndis_reset(usbdev);
3561 if (retval)
3562 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
3563
3564 /* rndis_reset cleared multicast list, so restore here.
3565 (set_multicast_list() also turns on current packet filter) */
3566 set_multicast_list(usbdev);
3567
3568 queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
3569 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
3570
3571 return deauthenticate(usbdev);
3572}
3573
3574static int rndis_wlan_stop(struct usbnet *usbdev)
3575{
3576 struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
3577 int retval;
3578 __le32 filter;
3579
3580 netdev_dbg(usbdev->net, "%s()\n", __func__);
3581
3582 retval = disassociate(usbdev, false);
3583
3584 priv->work_pending = 0;
3585 cancel_delayed_work_sync(&priv->dev_poller_work);
3586 cancel_delayed_work_sync(&priv->scan_work);
3587 cancel_work_sync(&priv->work);
3588 flush_workqueue(priv->workqueue);
3589
3590 if (priv->scan_request) {
3591 struct cfg80211_scan_info info = {
3592 .aborted = true,
3593 };
3594
3595 cfg80211_scan_done(priv->scan_request, &info);
3596 priv->scan_request = NULL;
3597 }
3598
3599 /* Set current packet filter zero to block receiving data packets from
3600 device. */
3601 filter = 0;
3602 rndis_set_oid(usbdev, RNDIS_OID_GEN_CURRENT_PACKET_FILTER, &filter,
3603 sizeof(filter));
3604
3605 return retval;
3606}
3607
3608static const struct driver_info bcm4320b_info = {
3609 .description = "Wireless RNDIS device, BCM4320b based",
3610 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3611 FLAG_AVOID_UNLINK_URBS,
3612 .bind = rndis_wlan_bind,
3613 .unbind = rndis_wlan_unbind,
3614 .status = rndis_status,
3615 .rx_fixup = rndis_rx_fixup,
3616 .tx_fixup = rndis_tx_fixup,
3617 .reset = rndis_wlan_reset,
3618 .stop = rndis_wlan_stop,
3619 .early_init = bcm4320b_early_init,
3620 .indication = rndis_wlan_indication,
3621};
3622
3623static const struct driver_info bcm4320a_info = {
3624 .description = "Wireless RNDIS device, BCM4320a based",
3625 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3626 FLAG_AVOID_UNLINK_URBS,
3627 .bind = rndis_wlan_bind,
3628 .unbind = rndis_wlan_unbind,
3629 .status = rndis_status,
3630 .rx_fixup = rndis_rx_fixup,
3631 .tx_fixup = rndis_tx_fixup,
3632 .reset = rndis_wlan_reset,
3633 .stop = rndis_wlan_stop,
3634 .early_init = bcm4320a_early_init,
3635 .indication = rndis_wlan_indication,
3636};
3637
3638static const struct driver_info rndis_wlan_info = {
3639 .description = "Wireless RNDIS device",
3640 .flags = FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
3641 FLAG_AVOID_UNLINK_URBS,
3642 .bind = rndis_wlan_bind,
3643 .unbind = rndis_wlan_unbind,
3644 .status = rndis_status,
3645 .rx_fixup = rndis_rx_fixup,
3646 .tx_fixup = rndis_tx_fixup,
3647 .reset = rndis_wlan_reset,
3648 .stop = rndis_wlan_stop,
3649 .early_init = unknown_early_init,
3650 .indication = rndis_wlan_indication,
3651};
3652
3653/*-------------------------------------------------------------------------*/
3654
3655static const struct usb_device_id products [] = {
3656#define RNDIS_MASTER_INTERFACE \
3657 .bInterfaceClass = USB_CLASS_COMM, \
3658 .bInterfaceSubClass = 2 /* ACM */, \
3659 .bInterfaceProtocol = 0x0ff
3660
3661/* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
3662 * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
3663 */
3664{
3665 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3666 | USB_DEVICE_ID_MATCH_DEVICE,
3667 .idVendor = 0x0411,
3668 .idProduct = 0x00bc, /* Buffalo WLI-U2-KG125S */
3669 RNDIS_MASTER_INTERFACE,
3670 .driver_info = (unsigned long) &bcm4320b_info,
3671}, {
3672 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3673 | USB_DEVICE_ID_MATCH_DEVICE,
3674 .idVendor = 0x0baf,
3675 .idProduct = 0x011b, /* U.S. Robotics USR5421 */
3676 RNDIS_MASTER_INTERFACE,
3677 .driver_info = (unsigned long) &bcm4320b_info,
3678}, {
3679 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3680 | USB_DEVICE_ID_MATCH_DEVICE,
3681 .idVendor = 0x050d,
3682 .idProduct = 0x011b, /* Belkin F5D7051 */
3683 RNDIS_MASTER_INTERFACE,
3684 .driver_info = (unsigned long) &bcm4320b_info,
3685}, {
3686 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3687 | USB_DEVICE_ID_MATCH_DEVICE,
3688 .idVendor = 0x1799, /* Belkin has two vendor ids */
3689 .idProduct = 0x011b, /* Belkin F5D7051 */
3690 RNDIS_MASTER_INTERFACE,
3691 .driver_info = (unsigned long) &bcm4320b_info,
3692}, {
3693 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3694 | USB_DEVICE_ID_MATCH_DEVICE,
3695 .idVendor = 0x13b1,
3696 .idProduct = 0x0014, /* Linksys WUSB54GSv2 */
3697 RNDIS_MASTER_INTERFACE,
3698 .driver_info = (unsigned long) &bcm4320b_info,
3699}, {
3700 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3701 | USB_DEVICE_ID_MATCH_DEVICE,
3702 .idVendor = 0x13b1,
3703 .idProduct = 0x0026, /* Linksys WUSB54GSC */
3704 RNDIS_MASTER_INTERFACE,
3705 .driver_info = (unsigned long) &bcm4320b_info,
3706}, {
3707 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3708 | USB_DEVICE_ID_MATCH_DEVICE,
3709 .idVendor = 0x0b05,
3710 .idProduct = 0x1717, /* Asus WL169gE */
3711 RNDIS_MASTER_INTERFACE,
3712 .driver_info = (unsigned long) &bcm4320b_info,
3713}, {
3714 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3715 | USB_DEVICE_ID_MATCH_DEVICE,
3716 .idVendor = 0x0a5c,
3717 .idProduct = 0xd11b, /* Eminent EM4045 */
3718 RNDIS_MASTER_INTERFACE,
3719 .driver_info = (unsigned long) &bcm4320b_info,
3720}, {
3721 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3722 | USB_DEVICE_ID_MATCH_DEVICE,
3723 .idVendor = 0x1690,
3724 .idProduct = 0x0715, /* BT Voyager 1055 */
3725 RNDIS_MASTER_INTERFACE,
3726 .driver_info = (unsigned long) &bcm4320b_info,
3727},
3728/* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3729 * parameters available, hardware probably contain older firmware version with
3730 * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3731 */
3732{
3733 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3734 | USB_DEVICE_ID_MATCH_DEVICE,
3735 .idVendor = 0x13b1,
3736 .idProduct = 0x000e, /* Linksys WUSB54GSv1 */
3737 RNDIS_MASTER_INTERFACE,
3738 .driver_info = (unsigned long) &bcm4320a_info,
3739}, {
3740 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3741 | USB_DEVICE_ID_MATCH_DEVICE,
3742 .idVendor = 0x0baf,
3743 .idProduct = 0x0111, /* U.S. Robotics USR5420 */
3744 RNDIS_MASTER_INTERFACE,
3745 .driver_info = (unsigned long) &bcm4320a_info,
3746}, {
3747 .match_flags = USB_DEVICE_ID_MATCH_INT_INFO
3748 | USB_DEVICE_ID_MATCH_DEVICE,
3749 .idVendor = 0x0411,
3750 .idProduct = 0x004b, /* BUFFALO WLI-USB-G54 */
3751 RNDIS_MASTER_INTERFACE,
3752 .driver_info = (unsigned long) &bcm4320a_info,
3753},
3754/* Generic Wireless RNDIS devices that we don't have exact
3755 * idVendor/idProduct/chip yet.
3756 */
3757{
3758 /* RNDIS is MSFT's un-official variant of CDC ACM */
3759 USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3760 .driver_info = (unsigned long) &rndis_wlan_info,
3761}, {
3762 /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3763 USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3764 .driver_info = (unsigned long) &rndis_wlan_info,
3765},
3766 { }, // END
3767};
3768MODULE_DEVICE_TABLE(usb, products);
3769
3770static struct usb_driver rndis_wlan_driver = {
3771 .name = "rndis_wlan",
3772 .id_table = products,
3773 .probe = usbnet_probe,
3774 .disconnect = usbnet_disconnect,
3775 .suspend = usbnet_suspend,
3776 .resume = usbnet_resume,
3777 .disable_hub_initiated_lpm = 1,
3778};
3779
3780module_usb_driver(rndis_wlan_driver);
3781
3782MODULE_AUTHOR("Bjorge Dijkstra");
3783MODULE_AUTHOR("Jussi Kivilinna");
3784MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3785MODULE_LICENSE("GPL");
3786