usbnet: Convert dev(dbg|err|warn|info) macros to netdev_<level>
[linux-2.6.git] / drivers / net / wireless / rndis_wlan.c
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 <net/iw_handler.h>
45 #include <net/cfg80211.h>
46 #include <linux/usb/usbnet.h>
47 #include <linux/usb/rndis_host.h>
48
49
50 /* NOTE: All these are settings for Broadcom chipset */
51 static char modparam_country[4] = "EU";
52 module_param_string(country, modparam_country, 4, 0444);
53 MODULE_PARM_DESC(country, "Country code (ISO 3166-1 alpha-2), default: EU");
54
55 static int modparam_frameburst = 1;
56 module_param_named(frameburst, modparam_frameburst, int, 0444);
57 MODULE_PARM_DESC(frameburst, "enable frame bursting (default: on)");
58
59 static int modparam_afterburner = 0;
60 module_param_named(afterburner, modparam_afterburner, int, 0444);
61 MODULE_PARM_DESC(afterburner,
62         "enable afterburner aka '125 High Speed Mode' (default: off)");
63
64 static int modparam_power_save = 0;
65 module_param_named(power_save, modparam_power_save, int, 0444);
66 MODULE_PARM_DESC(power_save,
67         "set power save mode: 0=off, 1=on, 2=fast (default: off)");
68
69 static int modparam_power_output = 3;
70 module_param_named(power_output, modparam_power_output, int, 0444);
71 MODULE_PARM_DESC(power_output,
72         "set power output: 0=25%, 1=50%, 2=75%, 3=100% (default: 100%)");
73
74 static int modparam_roamtrigger = -70;
75 module_param_named(roamtrigger, modparam_roamtrigger, int, 0444);
76 MODULE_PARM_DESC(roamtrigger,
77         "set roaming dBm trigger: -80=optimize for distance, "
78                                 "-60=bandwidth (default: -70)");
79
80 static int modparam_roamdelta = 1;
81 module_param_named(roamdelta, modparam_roamdelta, int, 0444);
82 MODULE_PARM_DESC(roamdelta,
83         "set roaming tendency: 0=aggressive, 1=moderate, "
84                                 "2=conservative (default: moderate)");
85
86 static int modparam_workaround_interval;
87 module_param_named(workaround_interval, modparam_workaround_interval,
88                                                         int, 0444);
89 MODULE_PARM_DESC(workaround_interval,
90         "set stall workaround interval in msecs (0=disabled) (default: 0)");
91
92
93 /* various RNDIS OID defs */
94 #define OID_GEN_LINK_SPEED                      cpu_to_le32(0x00010107)
95 #define OID_GEN_RNDIS_CONFIG_PARAMETER          cpu_to_le32(0x0001021b)
96
97 #define OID_GEN_XMIT_OK                         cpu_to_le32(0x00020101)
98 #define OID_GEN_RCV_OK                          cpu_to_le32(0x00020102)
99 #define OID_GEN_XMIT_ERROR                      cpu_to_le32(0x00020103)
100 #define OID_GEN_RCV_ERROR                       cpu_to_le32(0x00020104)
101 #define OID_GEN_RCV_NO_BUFFER                   cpu_to_le32(0x00020105)
102
103 #define OID_802_3_CURRENT_ADDRESS               cpu_to_le32(0x01010102)
104 #define OID_802_3_MULTICAST_LIST                cpu_to_le32(0x01010103)
105 #define OID_802_3_MAXIMUM_LIST_SIZE             cpu_to_le32(0x01010104)
106
107 #define OID_802_11_BSSID                        cpu_to_le32(0x0d010101)
108 #define OID_802_11_SSID                         cpu_to_le32(0x0d010102)
109 #define OID_802_11_INFRASTRUCTURE_MODE          cpu_to_le32(0x0d010108)
110 #define OID_802_11_ADD_WEP                      cpu_to_le32(0x0d010113)
111 #define OID_802_11_REMOVE_WEP                   cpu_to_le32(0x0d010114)
112 #define OID_802_11_DISASSOCIATE                 cpu_to_le32(0x0d010115)
113 #define OID_802_11_AUTHENTICATION_MODE          cpu_to_le32(0x0d010118)
114 #define OID_802_11_PRIVACY_FILTER               cpu_to_le32(0x0d010119)
115 #define OID_802_11_BSSID_LIST_SCAN              cpu_to_le32(0x0d01011a)
116 #define OID_802_11_ENCRYPTION_STATUS            cpu_to_le32(0x0d01011b)
117 #define OID_802_11_ADD_KEY                      cpu_to_le32(0x0d01011d)
118 #define OID_802_11_REMOVE_KEY                   cpu_to_le32(0x0d01011e)
119 #define OID_802_11_ASSOCIATION_INFORMATION      cpu_to_le32(0x0d01011f)
120 #define OID_802_11_PMKID                        cpu_to_le32(0x0d010123)
121 #define OID_802_11_NETWORK_TYPES_SUPPORTED      cpu_to_le32(0x0d010203)
122 #define OID_802_11_NETWORK_TYPE_IN_USE          cpu_to_le32(0x0d010204)
123 #define OID_802_11_TX_POWER_LEVEL               cpu_to_le32(0x0d010205)
124 #define OID_802_11_RSSI                         cpu_to_le32(0x0d010206)
125 #define OID_802_11_RSSI_TRIGGER                 cpu_to_le32(0x0d010207)
126 #define OID_802_11_FRAGMENTATION_THRESHOLD      cpu_to_le32(0x0d010209)
127 #define OID_802_11_RTS_THRESHOLD                cpu_to_le32(0x0d01020a)
128 #define OID_802_11_SUPPORTED_RATES              cpu_to_le32(0x0d01020e)
129 #define OID_802_11_CONFIGURATION                cpu_to_le32(0x0d010211)
130 #define OID_802_11_BSSID_LIST                   cpu_to_le32(0x0d010217)
131
132
133 /* Typical noise/maximum signal level values taken from ndiswrapper iw_ndis.h */
134 #define WL_NOISE        -96     /* typical noise level in dBm */
135 #define WL_SIGMAX       -32     /* typical maximum signal level in dBm */
136
137
138 /* Assume that Broadcom 4320 (only chipset at time of writing known to be
139  * based on wireless rndis) has default txpower of 13dBm.
140  * This value is from Linksys WUSB54GSC User Guide, Appendix F: Specifications.
141  *  100% : 20 mW ~ 13dBm
142  *   75% : 15 mW ~ 12dBm
143  *   50% : 10 mW ~ 10dBm
144  *   25% :  5 mW ~  7dBm
145  */
146 #define BCM4320_DEFAULT_TXPOWER_DBM_100 13
147 #define BCM4320_DEFAULT_TXPOWER_DBM_75  12
148 #define BCM4320_DEFAULT_TXPOWER_DBM_50  10
149 #define BCM4320_DEFAULT_TXPOWER_DBM_25  7
150
151
152 /* codes for "status" field of completion messages */
153 #define RNDIS_STATUS_ADAPTER_NOT_READY          cpu_to_le32(0xc0010011)
154 #define RNDIS_STATUS_ADAPTER_NOT_OPEN           cpu_to_le32(0xc0010012)
155
156
157 /* NDIS data structures. Taken from wpa_supplicant driver_ndis.c
158  * slightly modified for datatype endianess, etc
159  */
160 #define NDIS_802_11_LENGTH_SSID 32
161 #define NDIS_802_11_LENGTH_RATES 8
162 #define NDIS_802_11_LENGTH_RATES_EX 16
163
164 enum ndis_80211_net_type {
165         NDIS_80211_TYPE_FREQ_HOP,
166         NDIS_80211_TYPE_DIRECT_SEQ,
167         NDIS_80211_TYPE_OFDM_A,
168         NDIS_80211_TYPE_OFDM_G
169 };
170
171 enum ndis_80211_net_infra {
172         NDIS_80211_INFRA_ADHOC,
173         NDIS_80211_INFRA_INFRA,
174         NDIS_80211_INFRA_AUTO_UNKNOWN
175 };
176
177 enum ndis_80211_auth_mode {
178         NDIS_80211_AUTH_OPEN,
179         NDIS_80211_AUTH_SHARED,
180         NDIS_80211_AUTH_AUTO_SWITCH,
181         NDIS_80211_AUTH_WPA,
182         NDIS_80211_AUTH_WPA_PSK,
183         NDIS_80211_AUTH_WPA_NONE,
184         NDIS_80211_AUTH_WPA2,
185         NDIS_80211_AUTH_WPA2_PSK
186 };
187
188 enum ndis_80211_encr_status {
189         NDIS_80211_ENCR_WEP_ENABLED,
190         NDIS_80211_ENCR_DISABLED,
191         NDIS_80211_ENCR_WEP_KEY_ABSENT,
192         NDIS_80211_ENCR_NOT_SUPPORTED,
193         NDIS_80211_ENCR_TKIP_ENABLED,
194         NDIS_80211_ENCR_TKIP_KEY_ABSENT,
195         NDIS_80211_ENCR_CCMP_ENABLED,
196         NDIS_80211_ENCR_CCMP_KEY_ABSENT
197 };
198
199 enum ndis_80211_priv_filter {
200         NDIS_80211_PRIV_ACCEPT_ALL,
201         NDIS_80211_PRIV_8021X_WEP
202 };
203
204 enum ndis_80211_status_type {
205         NDIS_80211_STATUSTYPE_AUTHENTICATION,
206         NDIS_80211_STATUSTYPE_MEDIASTREAMMODE,
207         NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST,
208         NDIS_80211_STATUSTYPE_RADIOSTATE,
209 };
210
211 enum ndis_80211_media_stream_mode {
212         NDIS_80211_MEDIA_STREAM_OFF,
213         NDIS_80211_MEDIA_STREAM_ON
214 };
215
216 enum ndis_80211_radio_status {
217         NDIS_80211_RADIO_STATUS_ON,
218         NDIS_80211_RADIO_STATUS_HARDWARE_OFF,
219         NDIS_80211_RADIO_STATUS_SOFTWARE_OFF,
220 };
221
222 enum ndis_80211_addkey_bits {
223         NDIS_80211_ADDKEY_8021X_AUTH = cpu_to_le32(1 << 28),
224         NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ = cpu_to_le32(1 << 29),
225         NDIS_80211_ADDKEY_PAIRWISE_KEY = cpu_to_le32(1 << 30),
226         NDIS_80211_ADDKEY_TRANSMIT_KEY = cpu_to_le32(1 << 31)
227 };
228
229 enum ndis_80211_addwep_bits {
230         NDIS_80211_ADDWEP_PERCLIENT_KEY = cpu_to_le32(1 << 30),
231         NDIS_80211_ADDWEP_TRANSMIT_KEY = cpu_to_le32(1 << 31)
232 };
233
234 struct ndis_80211_auth_request {
235         __le32 length;
236         u8 bssid[6];
237         u8 padding[2];
238         __le32 flags;
239 } __attribute__((packed));
240
241 struct ndis_80211_pmkid_candidate {
242         u8 bssid[6];
243         u8 padding[2];
244         __le32 flags;
245 } __attribute__((packed));
246
247 struct ndis_80211_pmkid_cand_list {
248         __le32 version;
249         __le32 num_candidates;
250         struct ndis_80211_pmkid_candidate candidate_list[0];
251 } __attribute__((packed));
252
253 struct ndis_80211_status_indication {
254         __le32 status_type;
255         union {
256                 __le32                                  media_stream_mode;
257                 __le32                                  radio_status;
258                 struct ndis_80211_auth_request          auth_request[0];
259                 struct ndis_80211_pmkid_cand_list       cand_list;
260         } u;
261 } __attribute__((packed));
262
263 struct ndis_80211_ssid {
264         __le32 length;
265         u8 essid[NDIS_802_11_LENGTH_SSID];
266 } __attribute__((packed));
267
268 struct ndis_80211_conf_freq_hop {
269         __le32 length;
270         __le32 hop_pattern;
271         __le32 hop_set;
272         __le32 dwell_time;
273 } __attribute__((packed));
274
275 struct ndis_80211_conf {
276         __le32 length;
277         __le32 beacon_period;
278         __le32 atim_window;
279         __le32 ds_config;
280         struct ndis_80211_conf_freq_hop fh_config;
281 } __attribute__((packed));
282
283 struct ndis_80211_bssid_ex {
284         __le32 length;
285         u8 mac[6];
286         u8 padding[2];
287         struct ndis_80211_ssid ssid;
288         __le32 privacy;
289         __le32 rssi;
290         __le32 net_type;
291         struct ndis_80211_conf config;
292         __le32 net_infra;
293         u8 rates[NDIS_802_11_LENGTH_RATES_EX];
294         __le32 ie_length;
295         u8 ies[0];
296 } __attribute__((packed));
297
298 struct ndis_80211_bssid_list_ex {
299         __le32 num_items;
300         struct ndis_80211_bssid_ex bssid[0];
301 } __attribute__((packed));
302
303 struct ndis_80211_fixed_ies {
304         u8 timestamp[8];
305         __le16 beacon_interval;
306         __le16 capabilities;
307 } __attribute__((packed));
308
309 struct ndis_80211_wep_key {
310         __le32 size;
311         __le32 index;
312         __le32 length;
313         u8 material[32];
314 } __attribute__((packed));
315
316 struct ndis_80211_key {
317         __le32 size;
318         __le32 index;
319         __le32 length;
320         u8 bssid[6];
321         u8 padding[6];
322         u8 rsc[8];
323         u8 material[32];
324 } __attribute__((packed));
325
326 struct ndis_80211_remove_key {
327         __le32 size;
328         __le32 index;
329         u8 bssid[6];
330         u8 padding[2];
331 } __attribute__((packed));
332
333 struct ndis_config_param {
334         __le32 name_offs;
335         __le32 name_length;
336         __le32 type;
337         __le32 value_offs;
338         __le32 value_length;
339 } __attribute__((packed));
340
341 struct ndis_80211_assoc_info {
342         __le32 length;
343         __le16 req_ies;
344         struct req_ie {
345                 __le16 capa;
346                 __le16 listen_interval;
347                 u8 cur_ap_address[6];
348         } req_ie;
349         __le32 req_ie_length;
350         __le32 offset_req_ies;
351         __le16 resp_ies;
352         struct resp_ie {
353                 __le16 capa;
354                 __le16 status_code;
355                 __le16 assoc_id;
356         } resp_ie;
357         __le32 resp_ie_length;
358         __le32 offset_resp_ies;
359 } __attribute__((packed));
360
361 /*
362  *  private data
363  */
364 #define NET_TYPE_11FB   0
365
366 #define CAP_MODE_80211A         1
367 #define CAP_MODE_80211B         2
368 #define CAP_MODE_80211G         4
369 #define CAP_MODE_MASK           7
370
371 #define WORK_LINK_UP            (1<<0)
372 #define WORK_LINK_DOWN          (1<<1)
373 #define WORK_SET_MULTICAST_LIST (1<<2)
374
375 #define RNDIS_WLAN_ALG_NONE     0
376 #define RNDIS_WLAN_ALG_WEP      (1<<0)
377 #define RNDIS_WLAN_ALG_TKIP     (1<<1)
378 #define RNDIS_WLAN_ALG_CCMP     (1<<2)
379
380 #define RNDIS_WLAN_KEY_MGMT_NONE        0
381 #define RNDIS_WLAN_KEY_MGMT_802_1X      (1<<0)
382 #define RNDIS_WLAN_KEY_MGMT_PSK         (1<<1)
383
384 #define COMMAND_BUFFER_SIZE     (CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
385
386 static const struct ieee80211_channel rndis_channels[] = {
387         { .center_freq = 2412 },
388         { .center_freq = 2417 },
389         { .center_freq = 2422 },
390         { .center_freq = 2427 },
391         { .center_freq = 2432 },
392         { .center_freq = 2437 },
393         { .center_freq = 2442 },
394         { .center_freq = 2447 },
395         { .center_freq = 2452 },
396         { .center_freq = 2457 },
397         { .center_freq = 2462 },
398         { .center_freq = 2467 },
399         { .center_freq = 2472 },
400         { .center_freq = 2484 },
401 };
402
403 static const struct ieee80211_rate rndis_rates[] = {
404         { .bitrate = 10 },
405         { .bitrate = 20, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
406         { .bitrate = 55, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
407         { .bitrate = 110, .flags = IEEE80211_RATE_SHORT_PREAMBLE },
408         { .bitrate = 60 },
409         { .bitrate = 90 },
410         { .bitrate = 120 },
411         { .bitrate = 180 },
412         { .bitrate = 240 },
413         { .bitrate = 360 },
414         { .bitrate = 480 },
415         { .bitrate = 540 }
416 };
417
418 static const u32 rndis_cipher_suites[] = {
419         WLAN_CIPHER_SUITE_WEP40,
420         WLAN_CIPHER_SUITE_WEP104,
421         WLAN_CIPHER_SUITE_TKIP,
422         WLAN_CIPHER_SUITE_CCMP,
423 };
424
425 struct rndis_wlan_encr_key {
426         int len;
427         u32 cipher;
428         u8 material[32];
429         u8 bssid[ETH_ALEN];
430         bool pairwise;
431         bool tx_key;
432 };
433
434 /* RNDIS device private data */
435 struct rndis_wlan_private {
436         struct usbnet *usbdev;
437
438         struct wireless_dev wdev;
439
440         struct cfg80211_scan_request *scan_request;
441
442         struct workqueue_struct *workqueue;
443         struct delayed_work dev_poller_work;
444         struct delayed_work scan_work;
445         struct work_struct work;
446         struct mutex command_lock;
447         unsigned long work_pending;
448         int last_qual;
449
450         struct ieee80211_supported_band band;
451         struct ieee80211_channel channels[ARRAY_SIZE(rndis_channels)];
452         struct ieee80211_rate rates[ARRAY_SIZE(rndis_rates)];
453         u32 cipher_suites[ARRAY_SIZE(rndis_cipher_suites)];
454
455         int caps;
456         int multicast_size;
457
458         /* module parameters */
459         char param_country[4];
460         int  param_frameburst;
461         int  param_afterburner;
462         int  param_power_save;
463         int  param_power_output;
464         int  param_roamtrigger;
465         int  param_roamdelta;
466         u32  param_workaround_interval;
467
468         /* hardware state */
469         bool radio_on;
470         int infra_mode;
471         bool connected;
472         u8 bssid[ETH_ALEN];
473         struct ndis_80211_ssid essid;
474         __le32 current_command_oid;
475
476         /* encryption stuff */
477         int  encr_tx_key_index;
478         struct rndis_wlan_encr_key encr_keys[4];
479         enum nl80211_auth_type wpa_auth_type;
480         int  wpa_version;
481         int  wpa_keymgmt;
482         int  wpa_ie_len;
483         u8  *wpa_ie;
484         int  wpa_cipher_pair;
485         int  wpa_cipher_group;
486
487         u8 command_buffer[COMMAND_BUFFER_SIZE];
488 };
489
490 /*
491  * cfg80211 ops
492  */
493 static int rndis_change_virtual_intf(struct wiphy *wiphy,
494                                         struct net_device *dev,
495                                         enum nl80211_iftype type, u32 *flags,
496                                         struct vif_params *params);
497
498 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
499                         struct cfg80211_scan_request *request);
500
501 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed);
502
503 static int rndis_set_tx_power(struct wiphy *wiphy, enum tx_power_setting type,
504                                 int dbm);
505 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm);
506
507 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
508                                 struct cfg80211_connect_params *sme);
509
510 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
511                                 u16 reason_code);
512
513 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
514                                         struct cfg80211_ibss_params *params);
515
516 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev);
517
518 static int rndis_set_channel(struct wiphy *wiphy,
519         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type);
520
521 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
522                                         u8 key_index, const u8 *mac_addr,
523                                         struct key_params *params);
524
525 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
526                                         u8 key_index, const u8 *mac_addr);
527
528 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
529                                                                 u8 key_index);
530
531 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
532                                         u8 *mac, struct station_info *sinfo);
533
534 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
535                                int idx, u8 *mac, struct station_info *sinfo);
536
537 static struct cfg80211_ops rndis_config_ops = {
538         .change_virtual_intf = rndis_change_virtual_intf,
539         .scan = rndis_scan,
540         .set_wiphy_params = rndis_set_wiphy_params,
541         .set_tx_power = rndis_set_tx_power,
542         .get_tx_power = rndis_get_tx_power,
543         .connect = rndis_connect,
544         .disconnect = rndis_disconnect,
545         .join_ibss = rndis_join_ibss,
546         .leave_ibss = rndis_leave_ibss,
547         .set_channel = rndis_set_channel,
548         .add_key = rndis_add_key,
549         .del_key = rndis_del_key,
550         .set_default_key = rndis_set_default_key,
551         .get_station = rndis_get_station,
552         .dump_station = rndis_dump_station,
553 };
554
555 static void *rndis_wiphy_privid = &rndis_wiphy_privid;
556
557
558 static struct rndis_wlan_private *get_rndis_wlan_priv(struct usbnet *dev)
559 {
560         return (struct rndis_wlan_private *)dev->driver_priv;
561 }
562
563 static u32 get_bcm4320_power_dbm(struct rndis_wlan_private *priv)
564 {
565         switch (priv->param_power_output) {
566         default:
567         case 3:
568                 return BCM4320_DEFAULT_TXPOWER_DBM_100;
569         case 2:
570                 return BCM4320_DEFAULT_TXPOWER_DBM_75;
571         case 1:
572                 return BCM4320_DEFAULT_TXPOWER_DBM_50;
573         case 0:
574                 return BCM4320_DEFAULT_TXPOWER_DBM_25;
575         }
576 }
577
578 static bool is_wpa_key(struct rndis_wlan_private *priv, int idx)
579 {
580         int cipher = priv->encr_keys[idx].cipher;
581
582         return (cipher == WLAN_CIPHER_SUITE_CCMP ||
583                 cipher == WLAN_CIPHER_SUITE_TKIP);
584 }
585
586 static int rndis_cipher_to_alg(u32 cipher)
587 {
588         switch (cipher) {
589         default:
590                 return RNDIS_WLAN_ALG_NONE;
591         case WLAN_CIPHER_SUITE_WEP40:
592         case WLAN_CIPHER_SUITE_WEP104:
593                 return RNDIS_WLAN_ALG_WEP;
594         case WLAN_CIPHER_SUITE_TKIP:
595                 return RNDIS_WLAN_ALG_TKIP;
596         case WLAN_CIPHER_SUITE_CCMP:
597                 return RNDIS_WLAN_ALG_CCMP;
598         }
599 }
600
601 static int rndis_akm_suite_to_key_mgmt(u32 akm_suite)
602 {
603         switch (akm_suite) {
604         default:
605                 return RNDIS_WLAN_KEY_MGMT_NONE;
606         case WLAN_AKM_SUITE_8021X:
607                 return RNDIS_WLAN_KEY_MGMT_802_1X;
608         case WLAN_AKM_SUITE_PSK:
609                 return RNDIS_WLAN_KEY_MGMT_PSK;
610         }
611 }
612
613 #ifdef DEBUG
614 static const char *oid_to_string(__le32 oid)
615 {
616         switch (oid) {
617 #define OID_STR(oid) case oid: return(#oid)
618                 /* from rndis_host.h */
619                 OID_STR(OID_802_3_PERMANENT_ADDRESS);
620                 OID_STR(OID_GEN_MAXIMUM_FRAME_SIZE);
621                 OID_STR(OID_GEN_CURRENT_PACKET_FILTER);
622                 OID_STR(OID_GEN_PHYSICAL_MEDIUM);
623
624                 /* from rndis_wlan.c */
625                 OID_STR(OID_GEN_LINK_SPEED);
626                 OID_STR(OID_GEN_RNDIS_CONFIG_PARAMETER);
627
628                 OID_STR(OID_GEN_XMIT_OK);
629                 OID_STR(OID_GEN_RCV_OK);
630                 OID_STR(OID_GEN_XMIT_ERROR);
631                 OID_STR(OID_GEN_RCV_ERROR);
632                 OID_STR(OID_GEN_RCV_NO_BUFFER);
633
634                 OID_STR(OID_802_3_CURRENT_ADDRESS);
635                 OID_STR(OID_802_3_MULTICAST_LIST);
636                 OID_STR(OID_802_3_MAXIMUM_LIST_SIZE);
637
638                 OID_STR(OID_802_11_BSSID);
639                 OID_STR(OID_802_11_SSID);
640                 OID_STR(OID_802_11_INFRASTRUCTURE_MODE);
641                 OID_STR(OID_802_11_ADD_WEP);
642                 OID_STR(OID_802_11_REMOVE_WEP);
643                 OID_STR(OID_802_11_DISASSOCIATE);
644                 OID_STR(OID_802_11_AUTHENTICATION_MODE);
645                 OID_STR(OID_802_11_PRIVACY_FILTER);
646                 OID_STR(OID_802_11_BSSID_LIST_SCAN);
647                 OID_STR(OID_802_11_ENCRYPTION_STATUS);
648                 OID_STR(OID_802_11_ADD_KEY);
649                 OID_STR(OID_802_11_REMOVE_KEY);
650                 OID_STR(OID_802_11_ASSOCIATION_INFORMATION);
651                 OID_STR(OID_802_11_PMKID);
652                 OID_STR(OID_802_11_NETWORK_TYPES_SUPPORTED);
653                 OID_STR(OID_802_11_NETWORK_TYPE_IN_USE);
654                 OID_STR(OID_802_11_TX_POWER_LEVEL);
655                 OID_STR(OID_802_11_RSSI);
656                 OID_STR(OID_802_11_RSSI_TRIGGER);
657                 OID_STR(OID_802_11_FRAGMENTATION_THRESHOLD);
658                 OID_STR(OID_802_11_RTS_THRESHOLD);
659                 OID_STR(OID_802_11_SUPPORTED_RATES);
660                 OID_STR(OID_802_11_CONFIGURATION);
661                 OID_STR(OID_802_11_BSSID_LIST);
662 #undef OID_STR
663         }
664
665         return "?";
666 }
667 #else
668 static const char *oid_to_string(__le32 oid)
669 {
670         return "?";
671 }
672 #endif
673
674 /* translate error code */
675 static int rndis_error_status(__le32 rndis_status)
676 {
677         int ret = -EINVAL;
678         switch (rndis_status) {
679         case RNDIS_STATUS_SUCCESS:
680                 ret = 0;
681                 break;
682         case RNDIS_STATUS_FAILURE:
683         case RNDIS_STATUS_INVALID_DATA:
684                 ret = -EINVAL;
685                 break;
686         case RNDIS_STATUS_NOT_SUPPORTED:
687                 ret = -EOPNOTSUPP;
688                 break;
689         case RNDIS_STATUS_ADAPTER_NOT_READY:
690         case RNDIS_STATUS_ADAPTER_NOT_OPEN:
691                 ret = -EBUSY;
692                 break;
693         }
694         return ret;
695 }
696
697 static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
698 {
699         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
700         union {
701                 void                    *buf;
702                 struct rndis_msg_hdr    *header;
703                 struct rndis_query      *get;
704                 struct rndis_query_c    *get_c;
705         } u;
706         int ret, buflen;
707
708         buflen = *len + sizeof(*u.get);
709         if (buflen < CONTROL_BUFFER_SIZE)
710                 buflen = CONTROL_BUFFER_SIZE;
711
712         if (buflen > COMMAND_BUFFER_SIZE) {
713                 u.buf = kmalloc(buflen, GFP_KERNEL);
714                 if (!u.buf)
715                         return -ENOMEM;
716         } else {
717                 u.buf = priv->command_buffer;
718         }
719
720         mutex_lock(&priv->command_lock);
721
722         memset(u.get, 0, sizeof *u.get);
723         u.get->msg_type = RNDIS_MSG_QUERY;
724         u.get->msg_len = cpu_to_le32(sizeof *u.get);
725         u.get->oid = oid;
726
727         priv->current_command_oid = oid;
728         ret = rndis_command(dev, u.header, buflen);
729         priv->current_command_oid = 0;
730         if (ret < 0)
731                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
732                            __func__, oid_to_string(oid), ret,
733                            le32_to_cpu(u.get_c->status));
734
735         if (ret == 0) {
736                 memcpy(data, u.buf + le32_to_cpu(u.get_c->offset) + 8, *len);
737
738                 ret = le32_to_cpu(u.get_c->len);
739                 if (ret > *len)
740                         *len = ret;
741
742                 ret = rndis_error_status(u.get_c->status);
743                 if (ret < 0)
744                         netdev_dbg(dev->net, "%s(%s): device returned error,  0x%08x (%d)\n",
745                                    __func__, oid_to_string(oid),
746                                    le32_to_cpu(u.get_c->status), ret);
747         }
748
749         mutex_unlock(&priv->command_lock);
750
751         if (u.buf != priv->command_buffer)
752                 kfree(u.buf);
753         return ret;
754 }
755
756 static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len)
757 {
758         struct rndis_wlan_private *priv = get_rndis_wlan_priv(dev);
759         union {
760                 void                    *buf;
761                 struct rndis_msg_hdr    *header;
762                 struct rndis_set        *set;
763                 struct rndis_set_c      *set_c;
764         } u;
765         int ret, buflen;
766
767         buflen = len + sizeof(*u.set);
768         if (buflen < CONTROL_BUFFER_SIZE)
769                 buflen = CONTROL_BUFFER_SIZE;
770
771         if (buflen > COMMAND_BUFFER_SIZE) {
772                 u.buf = kmalloc(buflen, GFP_KERNEL);
773                 if (!u.buf)
774                         return -ENOMEM;
775         } else {
776                 u.buf = priv->command_buffer;
777         }
778
779         mutex_lock(&priv->command_lock);
780
781         memset(u.set, 0, sizeof *u.set);
782         u.set->msg_type = RNDIS_MSG_SET;
783         u.set->msg_len = cpu_to_le32(sizeof(*u.set) + len);
784         u.set->oid = oid;
785         u.set->len = cpu_to_le32(len);
786         u.set->offset = cpu_to_le32(sizeof(*u.set) - 8);
787         u.set->handle = cpu_to_le32(0);
788         memcpy(u.buf + sizeof(*u.set), data, len);
789
790         priv->current_command_oid = oid;
791         ret = rndis_command(dev, u.header, buflen);
792         priv->current_command_oid = 0;
793         if (ret < 0)
794                 netdev_dbg(dev->net, "%s(%s): rndis_command() failed, %d (%08x)\n",
795                            __func__, oid_to_string(oid), ret,
796                            le32_to_cpu(u.set_c->status));
797
798         if (ret == 0) {
799                 ret = rndis_error_status(u.set_c->status);
800
801                 if (ret < 0)
802                         netdev_dbg(dev->net, "%s(%s): device returned error, 0x%08x (%d)\n",
803                                    __func__, oid_to_string(oid),
804                                    le32_to_cpu(u.set_c->status), ret);
805         }
806
807         mutex_unlock(&priv->command_lock);
808
809         if (u.buf != priv->command_buffer)
810                 kfree(u.buf);
811         return ret;
812 }
813
814 static int rndis_reset(struct usbnet *usbdev)
815 {
816         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
817         struct rndis_reset *reset;
818         int ret;
819
820         mutex_lock(&priv->command_lock);
821
822         reset = (void *)priv->command_buffer;
823         memset(reset, 0, sizeof(*reset));
824         reset->msg_type = RNDIS_MSG_RESET;
825         reset->msg_len = cpu_to_le32(sizeof(*reset));
826         priv->current_command_oid = 0;
827         ret = rndis_command(usbdev, (void *)reset, CONTROL_BUFFER_SIZE);
828
829         mutex_unlock(&priv->command_lock);
830
831         if (ret < 0)
832                 return ret;
833         return 0;
834 }
835
836 /*
837  * Specs say that we can only set config parameters only soon after device
838  * initialization.
839  *   value_type: 0 = u32, 2 = unicode string
840  */
841 static int rndis_set_config_parameter(struct usbnet *dev, char *param,
842                                                 int value_type, void *value)
843 {
844         struct ndis_config_param *infobuf;
845         int value_len, info_len, param_len, ret, i;
846         __le16 *unibuf;
847         __le32 *dst_value;
848
849         if (value_type == 0)
850                 value_len = sizeof(__le32);
851         else if (value_type == 2)
852                 value_len = strlen(value) * sizeof(__le16);
853         else
854                 return -EINVAL;
855
856         param_len = strlen(param) * sizeof(__le16);
857         info_len = sizeof(*infobuf) + param_len + value_len;
858
859 #ifdef DEBUG
860         info_len += 12;
861 #endif
862         infobuf = kmalloc(info_len, GFP_KERNEL);
863         if (!infobuf)
864                 return -ENOMEM;
865
866 #ifdef DEBUG
867         info_len -= 12;
868         /* extra 12 bytes are for padding (debug output) */
869         memset(infobuf, 0xCC, info_len + 12);
870 #endif
871
872         if (value_type == 2)
873                 netdev_dbg(dev->net, "setting config parameter: %s, value: %s\n",
874                            param, (u8 *)value);
875         else
876                 netdev_dbg(dev->net, "setting config parameter: %s, value: %d\n",
877                            param, *(u32 *)value);
878
879         infobuf->name_offs = cpu_to_le32(sizeof(*infobuf));
880         infobuf->name_length = cpu_to_le32(param_len);
881         infobuf->type = cpu_to_le32(value_type);
882         infobuf->value_offs = cpu_to_le32(sizeof(*infobuf) + param_len);
883         infobuf->value_length = cpu_to_le32(value_len);
884
885         /* simple string to unicode string conversion */
886         unibuf = (void *)infobuf + sizeof(*infobuf);
887         for (i = 0; i < param_len / sizeof(__le16); i++)
888                 unibuf[i] = cpu_to_le16(param[i]);
889
890         if (value_type == 2) {
891                 unibuf = (void *)infobuf + sizeof(*infobuf) + param_len;
892                 for (i = 0; i < value_len / sizeof(__le16); i++)
893                         unibuf[i] = cpu_to_le16(((u8 *)value)[i]);
894         } else {
895                 dst_value = (void *)infobuf + sizeof(*infobuf) + param_len;
896                 *dst_value = cpu_to_le32(*(u32 *)value);
897         }
898
899 #ifdef DEBUG
900         netdev_dbg(dev->net, "info buffer (len: %d)\n", info_len);
901         for (i = 0; i < info_len; i += 12) {
902                 u32 *tmp = (u32 *)((u8 *)infobuf + i);
903                 netdev_dbg(dev->net, "%08X:%08X:%08X\n",
904                            cpu_to_be32(tmp[0]),
905                            cpu_to_be32(tmp[1]),
906                            cpu_to_be32(tmp[2]));
907         }
908 #endif
909
910         ret = rndis_set_oid(dev, OID_GEN_RNDIS_CONFIG_PARAMETER,
911                                                         infobuf, info_len);
912         if (ret != 0)
913                 netdev_dbg(dev->net, "setting rndis config parameter failed, %d\n",
914                            ret);
915
916         kfree(infobuf);
917         return ret;
918 }
919
920 static int rndis_set_config_parameter_str(struct usbnet *dev,
921                                                 char *param, char *value)
922 {
923         return rndis_set_config_parameter(dev, param, 2, value);
924 }
925
926 /*
927  * data conversion functions
928  */
929 static int level_to_qual(int level)
930 {
931         int qual = 100 * (level - WL_NOISE) / (WL_SIGMAX - WL_NOISE);
932         return qual >= 0 ? (qual <= 100 ? qual : 100) : 0;
933 }
934
935 /*
936  * common functions
937  */
938 static int set_infra_mode(struct usbnet *usbdev, int mode);
939 static void restore_keys(struct usbnet *usbdev);
940 static int rndis_check_bssid_list(struct usbnet *usbdev);
941
942 static int set_essid(struct usbnet *usbdev, struct ndis_80211_ssid *ssid)
943 {
944         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
945         int ret;
946
947         ret = rndis_set_oid(usbdev, OID_802_11_SSID, ssid, sizeof(*ssid));
948         if (ret < 0) {
949                 netdev_warn(usbdev->net, "setting SSID failed (%08X)\n", ret);
950                 return ret;
951         }
952         if (ret == 0) {
953                 memcpy(&priv->essid, ssid, sizeof(priv->essid));
954                 priv->radio_on = true;
955                 netdev_dbg(usbdev->net, "%s(): radio_on = true\n", __func__);
956         }
957
958         return ret;
959 }
960
961 static int set_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
962 {
963         int ret;
964
965         ret = rndis_set_oid(usbdev, OID_802_11_BSSID, bssid, ETH_ALEN);
966         if (ret < 0) {
967                 netdev_warn(usbdev->net, "setting BSSID[%pM] failed (%08X)\n",
968                             bssid, ret);
969                 return ret;
970         }
971
972         return ret;
973 }
974
975 static int clear_bssid(struct usbnet *usbdev)
976 {
977         u8 broadcast_mac[ETH_ALEN] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
978
979         return set_bssid(usbdev, broadcast_mac);
980 }
981
982 static int get_bssid(struct usbnet *usbdev, u8 bssid[ETH_ALEN])
983 {
984         int ret, len;
985
986         len = ETH_ALEN;
987         ret = rndis_query_oid(usbdev, OID_802_11_BSSID, bssid, &len);
988
989         if (ret != 0)
990                 memset(bssid, 0, ETH_ALEN);
991
992         return ret;
993 }
994
995 static int get_association_info(struct usbnet *usbdev,
996                         struct ndis_80211_assoc_info *info, int len)
997 {
998         return rndis_query_oid(usbdev, OID_802_11_ASSOCIATION_INFORMATION,
999                                 info, &len);
1000 }
1001
1002 static bool is_associated(struct usbnet *usbdev)
1003 {
1004         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1005         u8 bssid[ETH_ALEN];
1006         int ret;
1007
1008         if (!priv->radio_on)
1009                 return false;
1010
1011         ret = get_bssid(usbdev, bssid);
1012
1013         return (ret == 0 && !is_zero_ether_addr(bssid));
1014 }
1015
1016 static int disassociate(struct usbnet *usbdev, bool reset_ssid)
1017 {
1018         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1019         struct ndis_80211_ssid ssid;
1020         int i, ret = 0;
1021
1022         if (priv->radio_on) {
1023                 ret = rndis_set_oid(usbdev, OID_802_11_DISASSOCIATE, NULL, 0);
1024                 if (ret == 0) {
1025                         priv->radio_on = false;
1026                         netdev_dbg(usbdev->net, "%s(): radio_on = false\n",
1027                                    __func__);
1028
1029                         if (reset_ssid)
1030                                 msleep(100);
1031                 }
1032         }
1033
1034         /* disassociate causes radio to be turned off; if reset_ssid
1035          * is given, set random ssid to enable radio */
1036         if (reset_ssid) {
1037                 /* Set device to infrastructure mode so we don't get ad-hoc
1038                  * 'media connect' indications with the random ssid.
1039                  */
1040                 set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1041
1042                 ssid.length = cpu_to_le32(sizeof(ssid.essid));
1043                 get_random_bytes(&ssid.essid[2], sizeof(ssid.essid)-2);
1044                 ssid.essid[0] = 0x1;
1045                 ssid.essid[1] = 0xff;
1046                 for (i = 2; i < sizeof(ssid.essid); i++)
1047                         ssid.essid[i] = 0x1 + (ssid.essid[i] * 0xfe / 0xff);
1048                 ret = set_essid(usbdev, &ssid);
1049         }
1050         return ret;
1051 }
1052
1053 static int set_auth_mode(struct usbnet *usbdev, u32 wpa_version,
1054                                 enum nl80211_auth_type auth_type, int keymgmt)
1055 {
1056         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1057         __le32 tmp;
1058         int auth_mode, ret;
1059
1060         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x authalg=0x%x keymgmt=0x%x\n",
1061                    __func__, wpa_version, auth_type, keymgmt);
1062
1063         if (wpa_version & NL80211_WPA_VERSION_2) {
1064                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1065                         auth_mode = NDIS_80211_AUTH_WPA2;
1066                 else
1067                         auth_mode = NDIS_80211_AUTH_WPA2_PSK;
1068         } else if (wpa_version & NL80211_WPA_VERSION_1) {
1069                 if (keymgmt & RNDIS_WLAN_KEY_MGMT_802_1X)
1070                         auth_mode = NDIS_80211_AUTH_WPA;
1071                 else if (keymgmt & RNDIS_WLAN_KEY_MGMT_PSK)
1072                         auth_mode = NDIS_80211_AUTH_WPA_PSK;
1073                 else
1074                         auth_mode = NDIS_80211_AUTH_WPA_NONE;
1075         } else if (auth_type == NL80211_AUTHTYPE_SHARED_KEY)
1076                 auth_mode = NDIS_80211_AUTH_SHARED;
1077         else if (auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
1078                 auth_mode = NDIS_80211_AUTH_OPEN;
1079         else if (auth_type == NL80211_AUTHTYPE_AUTOMATIC)
1080                 auth_mode = NDIS_80211_AUTH_AUTO_SWITCH;
1081         else
1082                 return -ENOTSUPP;
1083
1084         tmp = cpu_to_le32(auth_mode);
1085         ret = rndis_set_oid(usbdev, OID_802_11_AUTHENTICATION_MODE, &tmp,
1086                                                                 sizeof(tmp));
1087         if (ret != 0) {
1088                 netdev_warn(usbdev->net, "setting auth mode failed (%08X)\n",
1089                             ret);
1090                 return ret;
1091         }
1092
1093         priv->wpa_version = wpa_version;
1094         priv->wpa_auth_type = auth_type;
1095         priv->wpa_keymgmt = keymgmt;
1096
1097         return 0;
1098 }
1099
1100 static int set_priv_filter(struct usbnet *usbdev)
1101 {
1102         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1103         __le32 tmp;
1104
1105         netdev_dbg(usbdev->net, "%s(): wpa_version=0x%x\n",
1106                    __func__, priv->wpa_version);
1107
1108         if (priv->wpa_version & NL80211_WPA_VERSION_2 ||
1109             priv->wpa_version & NL80211_WPA_VERSION_1)
1110                 tmp = cpu_to_le32(NDIS_80211_PRIV_8021X_WEP);
1111         else
1112                 tmp = cpu_to_le32(NDIS_80211_PRIV_ACCEPT_ALL);
1113
1114         return rndis_set_oid(usbdev, OID_802_11_PRIVACY_FILTER, &tmp,
1115                                                                 sizeof(tmp));
1116 }
1117
1118 static int set_encr_mode(struct usbnet *usbdev, int pairwise, int groupwise)
1119 {
1120         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1121         __le32 tmp;
1122         int encr_mode, ret;
1123
1124         netdev_dbg(usbdev->net, "%s(): cipher_pair=0x%x cipher_group=0x%x\n",
1125                    __func__, pairwise, groupwise);
1126
1127         if (pairwise & RNDIS_WLAN_ALG_CCMP)
1128                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1129         else if (pairwise & RNDIS_WLAN_ALG_TKIP)
1130                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1131         else if (pairwise & RNDIS_WLAN_ALG_WEP)
1132                 encr_mode = NDIS_80211_ENCR_WEP_ENABLED;
1133         else if (groupwise & RNDIS_WLAN_ALG_CCMP)
1134                 encr_mode = NDIS_80211_ENCR_CCMP_ENABLED;
1135         else if (groupwise & RNDIS_WLAN_ALG_TKIP)
1136                 encr_mode = NDIS_80211_ENCR_TKIP_ENABLED;
1137         else
1138                 encr_mode = NDIS_80211_ENCR_DISABLED;
1139
1140         tmp = cpu_to_le32(encr_mode);
1141         ret = rndis_set_oid(usbdev, OID_802_11_ENCRYPTION_STATUS, &tmp,
1142                                                                 sizeof(tmp));
1143         if (ret != 0) {
1144                 netdev_warn(usbdev->net, "setting encr mode failed (%08X)\n",
1145                             ret);
1146                 return ret;
1147         }
1148
1149         priv->wpa_cipher_pair = pairwise;
1150         priv->wpa_cipher_group = groupwise;
1151         return 0;
1152 }
1153
1154 static int set_infra_mode(struct usbnet *usbdev, int mode)
1155 {
1156         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1157         __le32 tmp;
1158         int ret;
1159
1160         netdev_dbg(usbdev->net, "%s(): infra_mode=0x%x\n",
1161                    __func__, priv->infra_mode);
1162
1163         tmp = cpu_to_le32(mode);
1164         ret = rndis_set_oid(usbdev, OID_802_11_INFRASTRUCTURE_MODE, &tmp,
1165                                                                 sizeof(tmp));
1166         if (ret != 0) {
1167                 netdev_warn(usbdev->net, "setting infra mode failed (%08X)\n",
1168                             ret);
1169                 return ret;
1170         }
1171
1172         /* NDIS drivers clear keys when infrastructure mode is
1173          * changed. But Linux tools assume otherwise. So set the
1174          * keys */
1175         restore_keys(usbdev);
1176
1177         priv->infra_mode = mode;
1178         return 0;
1179 }
1180
1181 static int set_rts_threshold(struct usbnet *usbdev, u32 rts_threshold)
1182 {
1183         __le32 tmp;
1184
1185         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, rts_threshold);
1186
1187         if (rts_threshold < 0 || rts_threshold > 2347)
1188                 rts_threshold = 2347;
1189
1190         tmp = cpu_to_le32(rts_threshold);
1191         return rndis_set_oid(usbdev, OID_802_11_RTS_THRESHOLD, &tmp,
1192                                                                 sizeof(tmp));
1193 }
1194
1195 static int set_frag_threshold(struct usbnet *usbdev, u32 frag_threshold)
1196 {
1197         __le32 tmp;
1198
1199         netdev_dbg(usbdev->net, "%s(): %i\n", __func__, frag_threshold);
1200
1201         if (frag_threshold < 256 || frag_threshold > 2346)
1202                 frag_threshold = 2346;
1203
1204         tmp = cpu_to_le32(frag_threshold);
1205         return rndis_set_oid(usbdev, OID_802_11_FRAGMENTATION_THRESHOLD, &tmp,
1206                                                                 sizeof(tmp));
1207 }
1208
1209 static void set_default_iw_params(struct usbnet *usbdev)
1210 {
1211         set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1212         set_auth_mode(usbdev, 0, NL80211_AUTHTYPE_OPEN_SYSTEM,
1213                                                 RNDIS_WLAN_KEY_MGMT_NONE);
1214         set_priv_filter(usbdev);
1215         set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1216 }
1217
1218 static int deauthenticate(struct usbnet *usbdev)
1219 {
1220         int ret;
1221
1222         ret = disassociate(usbdev, true);
1223         set_default_iw_params(usbdev);
1224         return ret;
1225 }
1226
1227 static int set_channel(struct usbnet *usbdev, int channel)
1228 {
1229         struct ndis_80211_conf config;
1230         unsigned int dsconfig;
1231         int len, ret;
1232
1233         netdev_dbg(usbdev->net, "%s(%d)\n", __func__, channel);
1234
1235         /* this OID is valid only when not associated */
1236         if (is_associated(usbdev))
1237                 return 0;
1238
1239         dsconfig = ieee80211_dsss_chan_to_freq(channel) * 1000;
1240
1241         len = sizeof(config);
1242         ret = rndis_query_oid(usbdev, OID_802_11_CONFIGURATION, &config, &len);
1243         if (ret < 0) {
1244                 netdev_dbg(usbdev->net, "%s(): querying configuration failed\n",
1245                            __func__);
1246                 return ret;
1247         }
1248
1249         config.ds_config = cpu_to_le32(dsconfig);
1250         ret = rndis_set_oid(usbdev, OID_802_11_CONFIGURATION, &config,
1251                                                                 sizeof(config));
1252
1253         netdev_dbg(usbdev->net, "%s(): %d -> %d\n", __func__, channel, ret);
1254
1255         return ret;
1256 }
1257
1258 /* index must be 0 - N, as per NDIS  */
1259 static int add_wep_key(struct usbnet *usbdev, const u8 *key, int key_len,
1260                                                                 int index)
1261 {
1262         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1263         struct ndis_80211_wep_key ndis_key;
1264         u32 cipher;
1265         int ret;
1266
1267         netdev_dbg(usbdev->net, "%s(idx: %d, len: %d)\n",
1268                    __func__, index, key_len);
1269
1270         if ((key_len != 5 && key_len != 13) || index < 0 || index > 3)
1271                 return -EINVAL;
1272
1273         if (key_len == 5)
1274                 cipher = WLAN_CIPHER_SUITE_WEP40;
1275         else
1276                 cipher = WLAN_CIPHER_SUITE_WEP104;
1277
1278         memset(&ndis_key, 0, sizeof(ndis_key));
1279
1280         ndis_key.size = cpu_to_le32(sizeof(ndis_key));
1281         ndis_key.length = cpu_to_le32(key_len);
1282         ndis_key.index = cpu_to_le32(index);
1283         memcpy(&ndis_key.material, key, key_len);
1284
1285         if (index == priv->encr_tx_key_index) {
1286                 ndis_key.index |= NDIS_80211_ADDWEP_TRANSMIT_KEY;
1287                 ret = set_encr_mode(usbdev, RNDIS_WLAN_ALG_WEP,
1288                                                         RNDIS_WLAN_ALG_NONE);
1289                 if (ret)
1290                         netdev_warn(usbdev->net, "encryption couldn't be enabled (%08X)\n",
1291                                     ret);
1292         }
1293
1294         ret = rndis_set_oid(usbdev, OID_802_11_ADD_WEP, &ndis_key,
1295                                                         sizeof(ndis_key));
1296         if (ret != 0) {
1297                 netdev_warn(usbdev->net, "adding encryption key %d failed (%08X)\n",
1298                             index + 1, ret);
1299                 return ret;
1300         }
1301
1302         priv->encr_keys[index].len = key_len;
1303         priv->encr_keys[index].cipher = cipher;
1304         memcpy(&priv->encr_keys[index].material, key, key_len);
1305         memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1306
1307         return 0;
1308 }
1309
1310 static int add_wpa_key(struct usbnet *usbdev, const u8 *key, int key_len,
1311                         int index, const u8 *addr, const u8 *rx_seq,
1312                         int seq_len, u32 cipher, __le32 flags)
1313 {
1314         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1315         struct ndis_80211_key ndis_key;
1316         bool is_addr_ok;
1317         int ret;
1318
1319         if (index < 0 || index >= 4) {
1320                 netdev_dbg(usbdev->net, "%s(): index out of range (%i)\n",
1321                            __func__, index);
1322                 return -EINVAL;
1323         }
1324         if (key_len > sizeof(ndis_key.material) || key_len < 0) {
1325                 netdev_dbg(usbdev->net, "%s(): key length out of range (%i)\n",
1326                            __func__, key_len);
1327                 return -EINVAL;
1328         }
1329         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ) {
1330                 if (!rx_seq || seq_len <= 0) {
1331                         netdev_dbg(usbdev->net, "%s(): recv seq flag without buffer\n",
1332                                    __func__);
1333                         return -EINVAL;
1334                 }
1335                 if (rx_seq && seq_len > sizeof(ndis_key.rsc)) {
1336                         netdev_dbg(usbdev->net, "%s(): too big recv seq buffer\n", __func__);
1337                         return -EINVAL;
1338                 }
1339         }
1340
1341         is_addr_ok = addr && !is_zero_ether_addr(addr) &&
1342                                         !is_broadcast_ether_addr(addr);
1343         if ((flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) && !is_addr_ok) {
1344                 netdev_dbg(usbdev->net, "%s(): pairwise but bssid invalid (%pM)\n",
1345                            __func__, addr);
1346                 return -EINVAL;
1347         }
1348
1349         netdev_dbg(usbdev->net, "%s(%i): flags:%i%i%i\n",
1350                    __func__, index,
1351                    !!(flags & NDIS_80211_ADDKEY_TRANSMIT_KEY),
1352                    !!(flags & NDIS_80211_ADDKEY_PAIRWISE_KEY),
1353                    !!(flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ));
1354
1355         memset(&ndis_key, 0, sizeof(ndis_key));
1356
1357         ndis_key.size = cpu_to_le32(sizeof(ndis_key) -
1358                                 sizeof(ndis_key.material) + key_len);
1359         ndis_key.length = cpu_to_le32(key_len);
1360         ndis_key.index = cpu_to_le32(index) | flags;
1361
1362         if (cipher == WLAN_CIPHER_SUITE_TKIP && key_len == 32) {
1363                 /* wpa_supplicant gives us the Michael MIC RX/TX keys in
1364                  * different order than NDIS spec, so swap the order here. */
1365                 memcpy(ndis_key.material, key, 16);
1366                 memcpy(ndis_key.material + 16, key + 24, 8);
1367                 memcpy(ndis_key.material + 24, key + 16, 8);
1368         } else
1369                 memcpy(ndis_key.material, key, key_len);
1370
1371         if (flags & NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ)
1372                 memcpy(ndis_key.rsc, rx_seq, seq_len);
1373
1374         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY) {
1375                 /* pairwise key */
1376                 memcpy(ndis_key.bssid, addr, ETH_ALEN);
1377         } else {
1378                 /* group key */
1379                 if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
1380                         memset(ndis_key.bssid, 0xff, ETH_ALEN);
1381                 else
1382                         get_bssid(usbdev, ndis_key.bssid);
1383         }
1384
1385         ret = rndis_set_oid(usbdev, OID_802_11_ADD_KEY, &ndis_key,
1386                                         le32_to_cpu(ndis_key.size));
1387         netdev_dbg(usbdev->net, "%s(): OID_802_11_ADD_KEY -> %08X\n",
1388                    __func__, ret);
1389         if (ret != 0)
1390                 return ret;
1391
1392         memset(&priv->encr_keys[index], 0, sizeof(priv->encr_keys[index]));
1393         priv->encr_keys[index].len = key_len;
1394         priv->encr_keys[index].cipher = cipher;
1395         memcpy(&priv->encr_keys[index].material, key, key_len);
1396         if (flags & NDIS_80211_ADDKEY_PAIRWISE_KEY)
1397                 memcpy(&priv->encr_keys[index].bssid, ndis_key.bssid, ETH_ALEN);
1398         else
1399                 memset(&priv->encr_keys[index].bssid, 0xff, ETH_ALEN);
1400
1401         if (flags & NDIS_80211_ADDKEY_TRANSMIT_KEY)
1402                 priv->encr_tx_key_index = index;
1403
1404         return 0;
1405 }
1406
1407 static int restore_key(struct usbnet *usbdev, int key_idx)
1408 {
1409         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1410         struct rndis_wlan_encr_key key;
1411
1412         if (is_wpa_key(priv, key_idx))
1413                 return 0;
1414
1415         key = priv->encr_keys[key_idx];
1416
1417         netdev_dbg(usbdev->net, "%s(): %i:%i\n", __func__, key_idx, key.len);
1418
1419         if (key.len == 0)
1420                 return 0;
1421
1422         return add_wep_key(usbdev, key.material, key.len, key_idx);
1423 }
1424
1425 static void restore_keys(struct usbnet *usbdev)
1426 {
1427         int i;
1428
1429         for (i = 0; i < 4; i++)
1430                 restore_key(usbdev, i);
1431 }
1432
1433 static void clear_key(struct rndis_wlan_private *priv, int idx)
1434 {
1435         memset(&priv->encr_keys[idx], 0, sizeof(priv->encr_keys[idx]));
1436 }
1437
1438 /* remove_key is for both wep and wpa */
1439 static int remove_key(struct usbnet *usbdev, int index, const u8 *bssid)
1440 {
1441         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1442         struct ndis_80211_remove_key remove_key;
1443         __le32 keyindex;
1444         bool is_wpa;
1445         int ret;
1446
1447         if (priv->encr_keys[index].len == 0)
1448                 return 0;
1449
1450         is_wpa = is_wpa_key(priv, index);
1451
1452         netdev_dbg(usbdev->net, "%s(): %i:%s:%i\n",
1453                    __func__, index, is_wpa ? "wpa" : "wep",
1454                    priv->encr_keys[index].len);
1455
1456         clear_key(priv, index);
1457
1458         if (is_wpa) {
1459                 remove_key.size = cpu_to_le32(sizeof(remove_key));
1460                 remove_key.index = cpu_to_le32(index);
1461                 if (bssid) {
1462                         /* pairwise key */
1463                         if (!is_broadcast_ether_addr(bssid))
1464                                 remove_key.index |=
1465                                         NDIS_80211_ADDKEY_PAIRWISE_KEY;
1466                         memcpy(remove_key.bssid, bssid,
1467                                         sizeof(remove_key.bssid));
1468                 } else
1469                         memset(remove_key.bssid, 0xff,
1470                                                 sizeof(remove_key.bssid));
1471
1472                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_KEY, &remove_key,
1473                                                         sizeof(remove_key));
1474                 if (ret != 0)
1475                         return ret;
1476         } else {
1477                 keyindex = cpu_to_le32(index);
1478                 ret = rndis_set_oid(usbdev, OID_802_11_REMOVE_WEP, &keyindex,
1479                                                         sizeof(keyindex));
1480                 if (ret != 0) {
1481                         netdev_warn(usbdev->net,
1482                                     "removing encryption key %d failed (%08X)\n",
1483                                     index, ret);
1484                         return ret;
1485                 }
1486         }
1487
1488         /* if it is transmit key, disable encryption */
1489         if (index == priv->encr_tx_key_index)
1490                 set_encr_mode(usbdev, RNDIS_WLAN_ALG_NONE, RNDIS_WLAN_ALG_NONE);
1491
1492         return 0;
1493 }
1494
1495 static void set_multicast_list(struct usbnet *usbdev)
1496 {
1497         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1498         struct dev_mc_list *mclist;
1499         __le32 filter;
1500         int ret, i, size;
1501         char *buf;
1502
1503         filter = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
1504
1505         if (usbdev->net->flags & IFF_PROMISC) {
1506                 filter |= RNDIS_PACKET_TYPE_PROMISCUOUS |
1507                         RNDIS_PACKET_TYPE_ALL_LOCAL;
1508         } else if (usbdev->net->flags & IFF_ALLMULTI ||
1509                    netdev_mc_count(usbdev->net) > priv->multicast_size) {
1510                 filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1511         } else if (!netdev_mc_empty(usbdev->net)) {
1512                 size = min(priv->multicast_size, netdev_mc_count(usbdev->net));
1513                 buf = kmalloc(size * ETH_ALEN, GFP_KERNEL);
1514                 if (!buf) {
1515                         netdev_warn(usbdev->net,
1516                                     "couldn't alloc %d bytes of memory\n",
1517                                     size * ETH_ALEN);
1518                         return;
1519                 }
1520
1521                 mclist = usbdev->net->mc_list;
1522                 for (i = 0; i < size && mclist; mclist = mclist->next) {
1523                         if (mclist->dmi_addrlen != ETH_ALEN)
1524                                 continue;
1525
1526                         memcpy(buf + i * ETH_ALEN, mclist->dmi_addr, ETH_ALEN);
1527                         i++;
1528                 }
1529
1530                 ret = rndis_set_oid(usbdev, OID_802_3_MULTICAST_LIST, buf,
1531                                                                 i * ETH_ALEN);
1532                 if (ret == 0 && i > 0)
1533                         filter |= RNDIS_PACKET_TYPE_MULTICAST;
1534                 else
1535                         filter |= RNDIS_PACKET_TYPE_ALL_MULTICAST;
1536
1537                 netdev_dbg(usbdev->net, "OID_802_3_MULTICAST_LIST(%d, max: %d) -> %d\n",
1538                            i, priv->multicast_size, ret);
1539
1540                 kfree(buf);
1541         }
1542
1543         ret = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
1544                                                         sizeof(filter));
1545         if (ret < 0) {
1546                 netdev_warn(usbdev->net, "couldn't set packet filter: %08x\n",
1547                             le32_to_cpu(filter));
1548         }
1549
1550         netdev_dbg(usbdev->net, "OID_GEN_CURRENT_PACKET_FILTER(%08x) -> %d\n",
1551                    le32_to_cpu(filter), ret);
1552 }
1553
1554 /*
1555  * cfg80211 ops
1556  */
1557 static int rndis_change_virtual_intf(struct wiphy *wiphy,
1558                                         struct net_device *dev,
1559                                         enum nl80211_iftype type, u32 *flags,
1560                                         struct vif_params *params)
1561 {
1562         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1563         struct usbnet *usbdev = priv->usbdev;
1564         int mode;
1565
1566         switch (type) {
1567         case NL80211_IFTYPE_ADHOC:
1568                 mode = NDIS_80211_INFRA_ADHOC;
1569                 break;
1570         case NL80211_IFTYPE_STATION:
1571                 mode = NDIS_80211_INFRA_INFRA;
1572                 break;
1573         default:
1574                 return -EINVAL;
1575         }
1576
1577         priv->wdev.iftype = type;
1578
1579         return set_infra_mode(usbdev, mode);
1580 }
1581
1582 static int rndis_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1583 {
1584         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1585         struct usbnet *usbdev = priv->usbdev;
1586         int err;
1587
1588         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
1589                 err = set_frag_threshold(usbdev, wiphy->frag_threshold);
1590                 if (err < 0)
1591                         return err;
1592         }
1593
1594         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1595                 err = set_rts_threshold(usbdev, wiphy->rts_threshold);
1596                 if (err < 0)
1597                         return err;
1598         }
1599
1600         return 0;
1601 }
1602
1603 static int rndis_set_tx_power(struct wiphy *wiphy, enum tx_power_setting type,
1604                                 int dbm)
1605 {
1606         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1607         struct usbnet *usbdev = priv->usbdev;
1608
1609         netdev_dbg(usbdev->net, "%s(): type:0x%x dbm:%i\n",
1610                    __func__, type, dbm);
1611
1612         /* Device doesn't support changing txpower after initialization, only
1613          * turn off/on radio. Support 'auto' mode and setting same dBm that is
1614          * currently used.
1615          */
1616         if (type == TX_POWER_AUTOMATIC || dbm == get_bcm4320_power_dbm(priv)) {
1617                 if (!priv->radio_on)
1618                         disassociate(usbdev, true); /* turn on radio */
1619
1620                 return 0;
1621         }
1622
1623         return -ENOTSUPP;
1624 }
1625
1626 static int rndis_get_tx_power(struct wiphy *wiphy, int *dbm)
1627 {
1628         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1629         struct usbnet *usbdev = priv->usbdev;
1630
1631         *dbm = get_bcm4320_power_dbm(priv);
1632
1633         netdev_dbg(usbdev->net, "%s(): dbm:%i\n", __func__, *dbm);
1634
1635         return 0;
1636 }
1637
1638 #define SCAN_DELAY_JIFFIES (6 * HZ)
1639 static int rndis_scan(struct wiphy *wiphy, struct net_device *dev,
1640                         struct cfg80211_scan_request *request)
1641 {
1642         struct usbnet *usbdev = netdev_priv(dev);
1643         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1644         int ret;
1645         __le32 tmp;
1646
1647         netdev_dbg(usbdev->net, "cfg80211.scan\n");
1648
1649         /* Get current bssid list from device before new scan, as new scan
1650          * clears internal bssid list.
1651          */
1652         rndis_check_bssid_list(usbdev);
1653
1654         if (!request)
1655                 return -EINVAL;
1656
1657         if (priv->scan_request && priv->scan_request != request)
1658                 return -EBUSY;
1659
1660         priv->scan_request = request;
1661
1662         tmp = cpu_to_le32(1);
1663         ret = rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
1664                                                         sizeof(tmp));
1665         if (ret == 0) {
1666                 /* Wait before retrieving scan results from device */
1667                 queue_delayed_work(priv->workqueue, &priv->scan_work,
1668                         SCAN_DELAY_JIFFIES);
1669         }
1670
1671         return ret;
1672 }
1673
1674 static struct cfg80211_bss *rndis_bss_info_update(struct usbnet *usbdev,
1675                                         struct ndis_80211_bssid_ex *bssid)
1676 {
1677         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
1678         struct ieee80211_channel *channel;
1679         s32 signal;
1680         u64 timestamp;
1681         u16 capability;
1682         u16 beacon_interval;
1683         struct ndis_80211_fixed_ies *fixed;
1684         int ie_len, bssid_len;
1685         u8 *ie;
1686
1687         netdev_dbg(usbdev->net, " found bssid: '%.32s' [%pM]\n",
1688                    bssid->ssid.essid, bssid->mac);
1689
1690         /* parse bssid structure */
1691         bssid_len = le32_to_cpu(bssid->length);
1692
1693         if (bssid_len < sizeof(struct ndis_80211_bssid_ex) +
1694                         sizeof(struct ndis_80211_fixed_ies))
1695                 return NULL;
1696
1697         fixed = (struct ndis_80211_fixed_ies *)bssid->ies;
1698
1699         ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
1700         ie_len = min(bssid_len - (int)sizeof(*bssid),
1701                                         (int)le32_to_cpu(bssid->ie_length));
1702         ie_len -= sizeof(struct ndis_80211_fixed_ies);
1703         if (ie_len < 0)
1704                 return NULL;
1705
1706         /* extract data for cfg80211_inform_bss */
1707         channel = ieee80211_get_channel(priv->wdev.wiphy,
1708                         KHZ_TO_MHZ(le32_to_cpu(bssid->config.ds_config)));
1709         if (!channel)
1710                 return NULL;
1711
1712         signal = level_to_qual(le32_to_cpu(bssid->rssi));
1713         timestamp = le64_to_cpu(*(__le64 *)fixed->timestamp);
1714         capability = le16_to_cpu(fixed->capabilities);
1715         beacon_interval = le16_to_cpu(fixed->beacon_interval);
1716
1717         return cfg80211_inform_bss(priv->wdev.wiphy, channel, bssid->mac,
1718                 timestamp, capability, beacon_interval, ie, ie_len, signal,
1719                 GFP_KERNEL);
1720 }
1721
1722 static int rndis_check_bssid_list(struct usbnet *usbdev)
1723 {
1724         void *buf = NULL;
1725         struct ndis_80211_bssid_list_ex *bssid_list;
1726         struct ndis_80211_bssid_ex *bssid;
1727         int ret = -EINVAL, len, count, bssid_len;
1728         bool resized = false;
1729
1730         netdev_dbg(usbdev->net, "check_bssid_list\n");
1731
1732         len = CONTROL_BUFFER_SIZE;
1733 resize_buf:
1734         buf = kmalloc(len, GFP_KERNEL);
1735         if (!buf) {
1736                 ret = -ENOMEM;
1737                 goto out;
1738         }
1739
1740         ret = rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
1741         if (ret != 0)
1742                 goto out;
1743
1744         if (!resized && len > CONTROL_BUFFER_SIZE) {
1745                 resized = true;
1746                 kfree(buf);
1747                 goto resize_buf;
1748         }
1749
1750         bssid_list = buf;
1751         bssid = bssid_list->bssid;
1752         bssid_len = le32_to_cpu(bssid->length);
1753         count = le32_to_cpu(bssid_list->num_items);
1754         netdev_dbg(usbdev->net, "check_bssid_list: %d BSSIDs found (buflen: %d)\n",
1755                    count, len);
1756
1757         while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
1758                 rndis_bss_info_update(usbdev, bssid);
1759
1760                 bssid = (void *)bssid + bssid_len;
1761                 bssid_len = le32_to_cpu(bssid->length);
1762                 count--;
1763         }
1764
1765 out:
1766         kfree(buf);
1767         return ret;
1768 }
1769
1770 static void rndis_get_scan_results(struct work_struct *work)
1771 {
1772         struct rndis_wlan_private *priv =
1773                 container_of(work, struct rndis_wlan_private, scan_work.work);
1774         struct usbnet *usbdev = priv->usbdev;
1775         int ret;
1776
1777         netdev_dbg(usbdev->net, "get_scan_results\n");
1778
1779         if (!priv->scan_request)
1780                 return;
1781
1782         ret = rndis_check_bssid_list(usbdev);
1783
1784         cfg80211_scan_done(priv->scan_request, ret < 0);
1785
1786         priv->scan_request = NULL;
1787 }
1788
1789 static int rndis_connect(struct wiphy *wiphy, struct net_device *dev,
1790                                         struct cfg80211_connect_params *sme)
1791 {
1792         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1793         struct usbnet *usbdev = priv->usbdev;
1794         struct ieee80211_channel *channel = sme->channel;
1795         struct ndis_80211_ssid ssid;
1796         int pairwise = RNDIS_WLAN_ALG_NONE;
1797         int groupwise = RNDIS_WLAN_ALG_NONE;
1798         int keymgmt = RNDIS_WLAN_KEY_MGMT_NONE;
1799         int length, i, ret, chan = -1;
1800
1801         if (channel)
1802                 chan = ieee80211_frequency_to_channel(channel->center_freq);
1803
1804         groupwise = rndis_cipher_to_alg(sme->crypto.cipher_group);
1805         for (i = 0; i < sme->crypto.n_ciphers_pairwise; i++)
1806                 pairwise |=
1807                         rndis_cipher_to_alg(sme->crypto.ciphers_pairwise[i]);
1808
1809         if (sme->crypto.n_ciphers_pairwise > 0 &&
1810                         pairwise == RNDIS_WLAN_ALG_NONE) {
1811                 netdev_err(usbdev->net, "Unsupported pairwise cipher\n");
1812                 return -ENOTSUPP;
1813         }
1814
1815         for (i = 0; i < sme->crypto.n_akm_suites; i++)
1816                 keymgmt |=
1817                         rndis_akm_suite_to_key_mgmt(sme->crypto.akm_suites[i]);
1818
1819         if (sme->crypto.n_akm_suites > 0 &&
1820                         keymgmt == RNDIS_WLAN_KEY_MGMT_NONE) {
1821                 netdev_err(usbdev->net, "Invalid keymgmt\n");
1822                 return -ENOTSUPP;
1823         }
1824
1825         netdev_dbg(usbdev->net, "cfg80211.connect('%.32s':[%pM]:%d:[%d,0x%x:0x%x]:[0x%x:0x%x]:0x%x)\n",
1826                    sme->ssid, sme->bssid, chan,
1827                    sme->privacy, sme->crypto.wpa_versions, sme->auth_type,
1828                    groupwise, pairwise, keymgmt);
1829
1830         if (is_associated(usbdev))
1831                 disassociate(usbdev, false);
1832
1833         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_INFRA);
1834         if (ret < 0) {
1835                 netdev_dbg(usbdev->net, "connect: set_infra_mode failed, %d\n",
1836                            ret);
1837                 goto err_turn_radio_on;
1838         }
1839
1840         ret = set_auth_mode(usbdev, sme->crypto.wpa_versions, sme->auth_type,
1841                                                                 keymgmt);
1842         if (ret < 0) {
1843                 netdev_dbg(usbdev->net, "connect: set_auth_mode failed, %d\n",
1844                            ret);
1845                 goto err_turn_radio_on;
1846         }
1847
1848         set_priv_filter(usbdev);
1849
1850         ret = set_encr_mode(usbdev, pairwise, groupwise);
1851         if (ret < 0) {
1852                 netdev_dbg(usbdev->net, "connect: set_encr_mode failed, %d\n",
1853                            ret);
1854                 goto err_turn_radio_on;
1855         }
1856
1857         if (channel) {
1858                 ret = set_channel(usbdev, chan);
1859                 if (ret < 0) {
1860                         netdev_dbg(usbdev->net, "connect: set_channel failed, %d\n",
1861                                    ret);
1862                         goto err_turn_radio_on;
1863                 }
1864         }
1865
1866         if (sme->key && ((groupwise | pairwise) & RNDIS_WLAN_ALG_WEP)) {
1867                 priv->encr_tx_key_index = sme->key_idx;
1868                 ret = add_wep_key(usbdev, sme->key, sme->key_len, sme->key_idx);
1869                 if (ret < 0) {
1870                         netdev_dbg(usbdev->net, "connect: add_wep_key failed, %d (%d, %d)\n",
1871                                    ret, sme->key_len, sme->key_idx);
1872                         goto err_turn_radio_on;
1873                 }
1874         }
1875
1876         if (sme->bssid && !is_zero_ether_addr(sme->bssid) &&
1877                                 !is_broadcast_ether_addr(sme->bssid)) {
1878                 ret = set_bssid(usbdev, sme->bssid);
1879                 if (ret < 0) {
1880                         netdev_dbg(usbdev->net, "connect: set_bssid failed, %d\n",
1881                                    ret);
1882                         goto err_turn_radio_on;
1883                 }
1884         } else
1885                 clear_bssid(usbdev);
1886
1887         length = sme->ssid_len;
1888         if (length > NDIS_802_11_LENGTH_SSID)
1889                 length = NDIS_802_11_LENGTH_SSID;
1890
1891         memset(&ssid, 0, sizeof(ssid));
1892         ssid.length = cpu_to_le32(length);
1893         memcpy(ssid.essid, sme->ssid, length);
1894
1895         /* Pause and purge rx queue, so we don't pass packets before
1896          * 'media connect'-indication.
1897          */
1898         usbnet_pause_rx(usbdev);
1899         usbnet_purge_paused_rxq(usbdev);
1900
1901         ret = set_essid(usbdev, &ssid);
1902         if (ret < 0)
1903                 netdev_dbg(usbdev->net, "connect: set_essid failed, %d\n", ret);
1904         return ret;
1905
1906 err_turn_radio_on:
1907         disassociate(usbdev, true);
1908
1909         return ret;
1910 }
1911
1912 static int rndis_disconnect(struct wiphy *wiphy, struct net_device *dev,
1913                                                                 u16 reason_code)
1914 {
1915         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1916         struct usbnet *usbdev = priv->usbdev;
1917
1918         netdev_dbg(usbdev->net, "cfg80211.disconnect(%d)\n", reason_code);
1919
1920         priv->connected = false;
1921         memset(priv->bssid, 0, ETH_ALEN);
1922
1923         return deauthenticate(usbdev);
1924 }
1925
1926 static int rndis_join_ibss(struct wiphy *wiphy, struct net_device *dev,
1927                                         struct cfg80211_ibss_params *params)
1928 {
1929         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
1930         struct usbnet *usbdev = priv->usbdev;
1931         struct ieee80211_channel *channel = params->channel;
1932         struct ndis_80211_ssid ssid;
1933         enum nl80211_auth_type auth_type;
1934         int ret, alg, length, chan = -1;
1935
1936         if (channel)
1937                 chan = ieee80211_frequency_to_channel(channel->center_freq);
1938
1939         /* TODO: How to handle ad-hoc encryption?
1940          * connect() has *key, join_ibss() doesn't. RNDIS requires key to be
1941          * pre-shared for encryption (open/shared/wpa), is key set before
1942          * join_ibss? Which auth_type to use (not in params)? What about WPA?
1943          */
1944         if (params->privacy) {
1945                 auth_type = NL80211_AUTHTYPE_SHARED_KEY;
1946                 alg = RNDIS_WLAN_ALG_WEP;
1947         } else {
1948                 auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
1949                 alg = RNDIS_WLAN_ALG_NONE;
1950         }
1951
1952         netdev_dbg(usbdev->net, "cfg80211.join_ibss('%.32s':[%pM]:%d:%d)\n",
1953                    params->ssid, params->bssid, chan, params->privacy);
1954
1955         if (is_associated(usbdev))
1956                 disassociate(usbdev, false);
1957
1958         ret = set_infra_mode(usbdev, NDIS_80211_INFRA_ADHOC);
1959         if (ret < 0) {
1960                 netdev_dbg(usbdev->net, "join_ibss: set_infra_mode failed, %d\n",
1961                            ret);
1962                 goto err_turn_radio_on;
1963         }
1964
1965         ret = set_auth_mode(usbdev, 0, auth_type, RNDIS_WLAN_KEY_MGMT_NONE);
1966         if (ret < 0) {
1967                 netdev_dbg(usbdev->net, "join_ibss: set_auth_mode failed, %d\n",
1968                            ret);
1969                 goto err_turn_radio_on;
1970         }
1971
1972         set_priv_filter(usbdev);
1973
1974         ret = set_encr_mode(usbdev, alg, RNDIS_WLAN_ALG_NONE);
1975         if (ret < 0) {
1976                 netdev_dbg(usbdev->net, "join_ibss: set_encr_mode failed, %d\n",
1977                            ret);
1978                 goto err_turn_radio_on;
1979         }
1980
1981         if (channel) {
1982                 ret = set_channel(usbdev, chan);
1983                 if (ret < 0) {
1984                         netdev_dbg(usbdev->net, "join_ibss: set_channel failed, %d\n",
1985                                    ret);
1986                         goto err_turn_radio_on;
1987                 }
1988         }
1989
1990         if (params->bssid && !is_zero_ether_addr(params->bssid) &&
1991                                 !is_broadcast_ether_addr(params->bssid)) {
1992                 ret = set_bssid(usbdev, params->bssid);
1993                 if (ret < 0) {
1994                         netdev_dbg(usbdev->net, "join_ibss: set_bssid failed, %d\n",
1995                                    ret);
1996                         goto err_turn_radio_on;
1997                 }
1998         } else
1999                 clear_bssid(usbdev);
2000
2001         length = params->ssid_len;
2002         if (length > NDIS_802_11_LENGTH_SSID)
2003                 length = NDIS_802_11_LENGTH_SSID;
2004
2005         memset(&ssid, 0, sizeof(ssid));
2006         ssid.length = cpu_to_le32(length);
2007         memcpy(ssid.essid, params->ssid, length);
2008
2009         /* Don't need to pause rx queue for ad-hoc. */
2010         usbnet_purge_paused_rxq(usbdev);
2011         usbnet_resume_rx(usbdev);
2012
2013         ret = set_essid(usbdev, &ssid);
2014         if (ret < 0)
2015                 netdev_dbg(usbdev->net, "join_ibss: set_essid failed, %d\n",
2016                            ret);
2017         return ret;
2018
2019 err_turn_radio_on:
2020         disassociate(usbdev, true);
2021
2022         return ret;
2023 }
2024
2025 static int rndis_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2026 {
2027         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2028         struct usbnet *usbdev = priv->usbdev;
2029
2030         netdev_dbg(usbdev->net, "cfg80211.leave_ibss()\n");
2031
2032         priv->connected = false;
2033         memset(priv->bssid, 0, ETH_ALEN);
2034
2035         return deauthenticate(usbdev);
2036 }
2037
2038 static int rndis_set_channel(struct wiphy *wiphy,
2039         struct ieee80211_channel *chan, enum nl80211_channel_type channel_type)
2040 {
2041         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2042         struct usbnet *usbdev = priv->usbdev;
2043
2044         return set_channel(usbdev,
2045                         ieee80211_frequency_to_channel(chan->center_freq));
2046 }
2047
2048 static int rndis_add_key(struct wiphy *wiphy, struct net_device *netdev,
2049                                         u8 key_index, const u8 *mac_addr,
2050                                         struct key_params *params)
2051 {
2052         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2053         struct usbnet *usbdev = priv->usbdev;
2054         __le32 flags;
2055
2056         netdev_dbg(usbdev->net, "%s(%i, %pM, %08x)\n",
2057                    __func__, key_index, mac_addr, params->cipher);
2058
2059         switch (params->cipher) {
2060         case WLAN_CIPHER_SUITE_WEP40:
2061         case WLAN_CIPHER_SUITE_WEP104:
2062                 return add_wep_key(usbdev, params->key, params->key_len,
2063                                                                 key_index);
2064         case WLAN_CIPHER_SUITE_TKIP:
2065         case WLAN_CIPHER_SUITE_CCMP:
2066                 flags = 0;
2067
2068                 if (params->seq && params->seq_len > 0)
2069                         flags |= NDIS_80211_ADDKEY_SET_INIT_RECV_SEQ;
2070                 if (mac_addr)
2071                         flags |= NDIS_80211_ADDKEY_PAIRWISE_KEY |
2072                                         NDIS_80211_ADDKEY_TRANSMIT_KEY;
2073
2074                 return add_wpa_key(usbdev, params->key, params->key_len,
2075                                 key_index, mac_addr, params->seq,
2076                                 params->seq_len, params->cipher, flags);
2077         default:
2078                 netdev_dbg(usbdev->net, "%s(): unsupported cipher %08x\n",
2079                            __func__, params->cipher);
2080                 return -ENOTSUPP;
2081         }
2082 }
2083
2084 static int rndis_del_key(struct wiphy *wiphy, struct net_device *netdev,
2085                                         u8 key_index, const u8 *mac_addr)
2086 {
2087         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2088         struct usbnet *usbdev = priv->usbdev;
2089
2090         netdev_dbg(usbdev->net, "%s(%i, %pM)\n", __func__, key_index, mac_addr);
2091
2092         return remove_key(usbdev, key_index, mac_addr);
2093 }
2094
2095 static int rndis_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
2096                                                                 u8 key_index)
2097 {
2098         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2099         struct usbnet *usbdev = priv->usbdev;
2100         struct rndis_wlan_encr_key key;
2101
2102         netdev_dbg(usbdev->net, "%s(%i)\n", __func__, key_index);
2103
2104         priv->encr_tx_key_index = key_index;
2105
2106         key = priv->encr_keys[key_index];
2107
2108         return add_wep_key(usbdev, key.material, key.len, key_index);
2109 }
2110
2111 static void rndis_fill_station_info(struct usbnet *usbdev,
2112                                                 struct station_info *sinfo)
2113 {
2114         __le32 linkspeed, rssi;
2115         int ret, len;
2116
2117         memset(sinfo, 0, sizeof(*sinfo));
2118
2119         len = sizeof(linkspeed);
2120         ret = rndis_query_oid(usbdev, OID_GEN_LINK_SPEED, &linkspeed, &len);
2121         if (ret == 0) {
2122                 sinfo->txrate.legacy = le32_to_cpu(linkspeed) / 1000;
2123                 sinfo->filled |= STATION_INFO_TX_BITRATE;
2124         }
2125
2126         len = sizeof(rssi);
2127         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2128         if (ret == 0) {
2129                 sinfo->signal = level_to_qual(le32_to_cpu(rssi));
2130                 sinfo->filled |= STATION_INFO_SIGNAL;
2131         }
2132 }
2133
2134 static int rndis_get_station(struct wiphy *wiphy, struct net_device *dev,
2135                                         u8 *mac, struct station_info *sinfo)
2136 {
2137         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2138         struct usbnet *usbdev = priv->usbdev;
2139
2140         if (compare_ether_addr(priv->bssid, mac))
2141                 return -ENOENT;
2142
2143         rndis_fill_station_info(usbdev, sinfo);
2144
2145         return 0;
2146 }
2147
2148 static int rndis_dump_station(struct wiphy *wiphy, struct net_device *dev,
2149                                int idx, u8 *mac, struct station_info *sinfo)
2150 {
2151         struct rndis_wlan_private *priv = wiphy_priv(wiphy);
2152         struct usbnet *usbdev = priv->usbdev;
2153
2154         if (idx != 0)
2155                 return -ENOENT;
2156
2157         memcpy(mac, priv->bssid, ETH_ALEN);
2158
2159         rndis_fill_station_info(usbdev, sinfo);
2160
2161         return 0;
2162 }
2163
2164 /*
2165  * workers, indication handlers, device poller
2166  */
2167 static void rndis_wlan_do_link_up_work(struct usbnet *usbdev)
2168 {
2169         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2170         struct ndis_80211_assoc_info *info;
2171         u8 assoc_buf[sizeof(*info) + IW_CUSTOM_MAX + 32];
2172         u8 bssid[ETH_ALEN];
2173         int resp_ie_len, req_ie_len;
2174         u8 *req_ie, *resp_ie;
2175         int ret, offset;
2176         bool roamed = false;
2177
2178         if (priv->infra_mode == NDIS_80211_INFRA_INFRA && priv->connected) {
2179                 /* received media connect indication while connected, either
2180                  * device reassociated with same AP or roamed to new. */
2181                 roamed = true;
2182         }
2183
2184         req_ie_len = 0;
2185         resp_ie_len = 0;
2186         req_ie = NULL;
2187         resp_ie = NULL;
2188
2189         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2190                 memset(assoc_buf, 0, sizeof(assoc_buf));
2191                 info = (void *)assoc_buf;
2192
2193                 /* Get association info IEs from device and send them back to
2194                  * userspace. */
2195                 ret = get_association_info(usbdev, info, sizeof(assoc_buf));
2196                 if (!ret) {
2197                         req_ie_len = le32_to_cpu(info->req_ie_length);
2198                         if (req_ie_len > 0) {
2199                                 offset = le32_to_cpu(info->offset_req_ies);
2200                                 req_ie = (u8 *)info + offset;
2201                         }
2202
2203                         resp_ie_len = le32_to_cpu(info->resp_ie_length);
2204                         if (resp_ie_len > 0) {
2205                                 offset = le32_to_cpu(info->offset_resp_ies);
2206                                 resp_ie = (u8 *)info + offset;
2207                         }
2208                 }
2209         } else if (WARN_ON(priv->infra_mode != NDIS_80211_INFRA_ADHOC))
2210                 return;
2211
2212         ret = get_bssid(usbdev, bssid);
2213         if (ret < 0)
2214                 memset(bssid, 0, sizeof(bssid));
2215
2216         netdev_dbg(usbdev->net, "link up work: [%pM]%s\n",
2217                    bssid, roamed ? " roamed" : "");
2218
2219         /* Internal bss list in device always contains at least the currently
2220          * connected bss and we can get it to cfg80211 with
2221          * rndis_check_bssid_list().
2222          * NOTE: This is true for Broadcom chip, but not mentioned in RNDIS
2223          * spec.
2224          */
2225         rndis_check_bssid_list(usbdev);
2226
2227         if (priv->infra_mode == NDIS_80211_INFRA_INFRA) {
2228                 if (!roamed)
2229                         cfg80211_connect_result(usbdev->net, bssid, req_ie,
2230                                                 req_ie_len, resp_ie,
2231                                                 resp_ie_len, 0, GFP_KERNEL);
2232                 else
2233                         cfg80211_roamed(usbdev->net, bssid, req_ie, req_ie_len,
2234                                         resp_ie, resp_ie_len, GFP_KERNEL);
2235         } else if (priv->infra_mode == NDIS_80211_INFRA_ADHOC)
2236                 cfg80211_ibss_joined(usbdev->net, bssid, GFP_KERNEL);
2237
2238         priv->connected = true;
2239         memcpy(priv->bssid, bssid, ETH_ALEN);
2240
2241         usbnet_resume_rx(usbdev);
2242         netif_carrier_on(usbdev->net);
2243 }
2244
2245 static void rndis_wlan_do_link_down_work(struct usbnet *usbdev)
2246 {
2247         union iwreq_data evt;
2248
2249         netif_carrier_off(usbdev->net);
2250
2251         evt.data.flags = 0;
2252         evt.data.length = 0;
2253         memset(evt.ap_addr.sa_data, 0, ETH_ALEN);
2254         wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
2255 }
2256
2257 static void rndis_wlan_worker(struct work_struct *work)
2258 {
2259         struct rndis_wlan_private *priv =
2260                 container_of(work, struct rndis_wlan_private, work);
2261         struct usbnet *usbdev = priv->usbdev;
2262
2263         if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending))
2264                 rndis_wlan_do_link_up_work(usbdev);
2265
2266         if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending))
2267                 rndis_wlan_do_link_down_work(usbdev);
2268
2269         if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2270                 set_multicast_list(usbdev);
2271 }
2272
2273 static void rndis_wlan_set_multicast_list(struct net_device *dev)
2274 {
2275         struct usbnet *usbdev = netdev_priv(dev);
2276         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2277
2278         if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
2279                 return;
2280
2281         set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
2282         queue_work(priv->workqueue, &priv->work);
2283 }
2284
2285 static void rndis_wlan_auth_indication(struct usbnet *usbdev,
2286                                 struct ndis_80211_status_indication *indication,
2287                                 int len)
2288 {
2289         u8 *buf;
2290         const char *type;
2291         int flags, buflen, key_id;
2292         bool pairwise_error, group_error;
2293         struct ndis_80211_auth_request *auth_req;
2294         enum nl80211_key_type key_type;
2295
2296         /* must have at least one array entry */
2297         if (len < offsetof(struct ndis_80211_status_indication, u) +
2298                                 sizeof(struct ndis_80211_auth_request)) {
2299                 netdev_info(usbdev->net, "authentication indication: too short message (%i)\n",
2300                             len);
2301                 return;
2302         }
2303
2304         buf = (void *)&indication->u.auth_request[0];
2305         buflen = len - offsetof(struct ndis_80211_status_indication, u);
2306
2307         while (buflen >= sizeof(*auth_req)) {
2308                 auth_req = (void *)buf;
2309                 type = "unknown";
2310                 flags = le32_to_cpu(auth_req->flags);
2311                 pairwise_error = false;
2312                 group_error = false;
2313
2314                 if (flags & 0x1)
2315                         type = "reauth request";
2316                 if (flags & 0x2)
2317                         type = "key update request";
2318                 if (flags & 0x6) {
2319                         pairwise_error = true;
2320                         type = "pairwise_error";
2321                 }
2322                 if (flags & 0xe) {
2323                         group_error = true;
2324                         type = "group_error";
2325                 }
2326
2327                 netdev_info(usbdev->net, "authentication indication: %s (0x%08x)\n",
2328                             type, le32_to_cpu(auth_req->flags));
2329
2330                 if (pairwise_error) {
2331                         key_type = NL80211_KEYTYPE_PAIRWISE;
2332                         key_id = -1;
2333
2334                         cfg80211_michael_mic_failure(usbdev->net,
2335                                                         auth_req->bssid,
2336                                                         key_type, key_id, NULL,
2337                                                         GFP_KERNEL);
2338                 }
2339
2340                 if (group_error) {
2341                         key_type = NL80211_KEYTYPE_GROUP;
2342                         key_id = -1;
2343
2344                         cfg80211_michael_mic_failure(usbdev->net,
2345                                                         auth_req->bssid,
2346                                                         key_type, key_id, NULL,
2347                                                         GFP_KERNEL);
2348                 }
2349
2350                 buflen -= le32_to_cpu(auth_req->length);
2351                 buf += le32_to_cpu(auth_req->length);
2352         }
2353 }
2354
2355 static void rndis_wlan_pmkid_cand_list_indication(struct usbnet *usbdev,
2356                                 struct ndis_80211_status_indication *indication,
2357                                 int len)
2358 {
2359         struct ndis_80211_pmkid_cand_list *cand_list;
2360         int list_len, expected_len, i;
2361
2362         if (len < offsetof(struct ndis_80211_status_indication, u) +
2363                                 sizeof(struct ndis_80211_pmkid_cand_list)) {
2364                 netdev_info(usbdev->net, "pmkid candidate list indication: too short message (%i)\n",
2365                             len);
2366                 return;
2367         }
2368
2369         list_len = le32_to_cpu(indication->u.cand_list.num_candidates) *
2370                         sizeof(struct ndis_80211_pmkid_candidate);
2371         expected_len = sizeof(struct ndis_80211_pmkid_cand_list) + list_len +
2372                         offsetof(struct ndis_80211_status_indication, u);
2373
2374         if (len < expected_len) {
2375                 netdev_info(usbdev->net, "pmkid candidate list indication: list larger than buffer (%i < %i)\n",
2376                             len, expected_len);
2377                 return;
2378         }
2379
2380         cand_list = &indication->u.cand_list;
2381
2382         netdev_info(usbdev->net, "pmkid candidate list indication: version %i, candidates %i\n",
2383                     le32_to_cpu(cand_list->version),
2384                     le32_to_cpu(cand_list->num_candidates));
2385
2386         if (le32_to_cpu(cand_list->version) != 1)
2387                 return;
2388
2389         for (i = 0; i < le32_to_cpu(cand_list->num_candidates); i++) {
2390                 struct ndis_80211_pmkid_candidate *cand =
2391                                                 &cand_list->candidate_list[i];
2392
2393                 netdev_dbg(usbdev->net, "cand[%i]: flags: 0x%08x, bssid: %pM\n",
2394                            i, le32_to_cpu(cand->flags), cand->bssid);
2395
2396 #if 0
2397                 struct iw_pmkid_cand pcand;
2398                 union iwreq_data wrqu;
2399
2400                 memset(&pcand, 0, sizeof(pcand));
2401                 if (le32_to_cpu(cand->flags) & 0x01)
2402                         pcand.flags |= IW_PMKID_CAND_PREAUTH;
2403                 pcand.index = i;
2404                 memcpy(pcand.bssid.sa_data, cand->bssid, ETH_ALEN);
2405
2406                 memset(&wrqu, 0, sizeof(wrqu));
2407                 wrqu.data.length = sizeof(pcand);
2408                 wireless_send_event(usbdev->net, IWEVPMKIDCAND, &wrqu,
2409                                                                 (u8 *)&pcand);
2410 #endif
2411         }
2412 }
2413
2414 static void rndis_wlan_media_specific_indication(struct usbnet *usbdev,
2415                         struct rndis_indicate *msg, int buflen)
2416 {
2417         struct ndis_80211_status_indication *indication;
2418         int len, offset;
2419
2420         offset = offsetof(struct rndis_indicate, status) +
2421                         le32_to_cpu(msg->offset);
2422         len = le32_to_cpu(msg->length);
2423
2424         if (len < 8) {
2425                 netdev_info(usbdev->net, "media specific indication, ignore too short message (%i < 8)\n",
2426                             len);
2427                 return;
2428         }
2429
2430         if (offset + len > buflen) {
2431                 netdev_info(usbdev->net, "media specific indication, too large to fit to buffer (%i > %i)\n",
2432                             offset + len, buflen);
2433                 return;
2434         }
2435
2436         indication = (void *)((u8 *)msg + offset);
2437
2438         switch (le32_to_cpu(indication->status_type)) {
2439         case NDIS_80211_STATUSTYPE_RADIOSTATE:
2440                 netdev_info(usbdev->net, "radio state indication: %i\n",
2441                             le32_to_cpu(indication->u.radio_status));
2442                 return;
2443
2444         case NDIS_80211_STATUSTYPE_MEDIASTREAMMODE:
2445                 netdev_info(usbdev->net, "media stream mode indication: %i\n",
2446                             le32_to_cpu(indication->u.media_stream_mode));
2447                 return;
2448
2449         case NDIS_80211_STATUSTYPE_AUTHENTICATION:
2450                 rndis_wlan_auth_indication(usbdev, indication, len);
2451                 return;
2452
2453         case NDIS_80211_STATUSTYPE_PMKID_CANDIDATELIST:
2454                 rndis_wlan_pmkid_cand_list_indication(usbdev, indication, len);
2455                 return;
2456
2457         default:
2458                 netdev_info(usbdev->net, "media specific indication: unknown status type 0x%08x\n",
2459                             le32_to_cpu(indication->status_type));
2460         }
2461 }
2462
2463 static void rndis_wlan_indication(struct usbnet *usbdev, void *ind, int buflen)
2464 {
2465         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2466         struct rndis_indicate *msg = ind;
2467
2468         switch (msg->status) {
2469         case RNDIS_STATUS_MEDIA_CONNECT:
2470                 if (priv->current_command_oid == OID_802_11_ADD_KEY) {
2471                         /* OID_802_11_ADD_KEY causes sometimes extra
2472                          * "media connect" indications which confuses driver
2473                          * and userspace to think that device is
2474                          * roaming/reassociating when it isn't.
2475                          */
2476                         netdev_dbg(usbdev->net, "ignored OID_802_11_ADD_KEY triggered 'media connect'\n");
2477                         return;
2478                 }
2479
2480                 usbnet_pause_rx(usbdev);
2481
2482                 netdev_info(usbdev->net, "media connect\n");
2483
2484                 /* queue work to avoid recursive calls into rndis_command */
2485                 set_bit(WORK_LINK_UP, &priv->work_pending);
2486                 queue_work(priv->workqueue, &priv->work);
2487                 break;
2488
2489         case RNDIS_STATUS_MEDIA_DISCONNECT:
2490                 netdev_info(usbdev->net, "media disconnect\n");
2491
2492                 /* queue work to avoid recursive calls into rndis_command */
2493                 set_bit(WORK_LINK_DOWN, &priv->work_pending);
2494                 queue_work(priv->workqueue, &priv->work);
2495                 break;
2496
2497         case RNDIS_STATUS_MEDIA_SPECIFIC_INDICATION:
2498                 rndis_wlan_media_specific_indication(usbdev, msg, buflen);
2499                 break;
2500
2501         default:
2502                 netdev_info(usbdev->net, "indication: 0x%08x\n",
2503                             le32_to_cpu(msg->status));
2504                 break;
2505         }
2506 }
2507
2508 static int rndis_wlan_get_caps(struct usbnet *usbdev)
2509 {
2510         struct {
2511                 __le32  num_items;
2512                 __le32  items[8];
2513         } networks_supported;
2514         int len, retval, i, n;
2515         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2516
2517         /* determine supported modes */
2518         len = sizeof(networks_supported);
2519         retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
2520                                                 &networks_supported, &len);
2521         if (retval >= 0) {
2522                 n = le32_to_cpu(networks_supported.num_items);
2523                 if (n > 8)
2524                         n = 8;
2525                 for (i = 0; i < n; i++) {
2526                         switch (le32_to_cpu(networks_supported.items[i])) {
2527                         case NDIS_80211_TYPE_FREQ_HOP:
2528                         case NDIS_80211_TYPE_DIRECT_SEQ:
2529                                 priv->caps |= CAP_MODE_80211B;
2530                                 break;
2531                         case NDIS_80211_TYPE_OFDM_A:
2532                                 priv->caps |= CAP_MODE_80211A;
2533                                 break;
2534                         case NDIS_80211_TYPE_OFDM_G:
2535                                 priv->caps |= CAP_MODE_80211G;
2536                                 break;
2537                         }
2538                 }
2539         }
2540
2541         return retval;
2542 }
2543
2544 #define DEVICE_POLLER_JIFFIES (HZ)
2545 static void rndis_device_poller(struct work_struct *work)
2546 {
2547         struct rndis_wlan_private *priv =
2548                 container_of(work, struct rndis_wlan_private,
2549                                                         dev_poller_work.work);
2550         struct usbnet *usbdev = priv->usbdev;
2551         __le32 rssi, tmp;
2552         int len, ret, j;
2553         int update_jiffies = DEVICE_POLLER_JIFFIES;
2554         void *buf;
2555
2556         /* Only check/do workaround when connected. Calling is_associated()
2557          * also polls device with rndis_command() and catches for media link
2558          * indications.
2559          */
2560         if (!is_associated(usbdev))
2561                 goto end;
2562
2563         len = sizeof(rssi);
2564         ret = rndis_query_oid(usbdev, OID_802_11_RSSI, &rssi, &len);
2565         if (ret == 0)
2566                 priv->last_qual = level_to_qual(le32_to_cpu(rssi));
2567
2568         netdev_dbg(usbdev->net, "dev-poller: OID_802_11_RSSI -> %d, rssi:%d, qual: %d\n",
2569                    ret, le32_to_cpu(rssi), level_to_qual(le32_to_cpu(rssi)));
2570
2571         /* Workaround transfer stalls on poor quality links.
2572          * TODO: find right way to fix these stalls (as stalls do not happen
2573          * with ndiswrapper/windows driver). */
2574         if (priv->param_workaround_interval > 0 && priv->last_qual <= 25) {
2575                 /* Decrease stats worker interval to catch stalls.
2576                  * faster. Faster than 400-500ms causes packet loss,
2577                  * Slower doesn't catch stalls fast enough.
2578                  */
2579                 j = msecs_to_jiffies(priv->param_workaround_interval);
2580                 if (j > DEVICE_POLLER_JIFFIES)
2581                         j = DEVICE_POLLER_JIFFIES;
2582                 else if (j <= 0)
2583                         j = 1;
2584                 update_jiffies = j;
2585
2586                 /* Send scan OID. Use of both OIDs is required to get device
2587                  * working.
2588                  */
2589                 tmp = cpu_to_le32(1);
2590                 rndis_set_oid(usbdev, OID_802_11_BSSID_LIST_SCAN, &tmp,
2591                                                                 sizeof(tmp));
2592
2593                 len = CONTROL_BUFFER_SIZE;
2594                 buf = kmalloc(len, GFP_KERNEL);
2595                 if (!buf)
2596                         goto end;
2597
2598                 rndis_query_oid(usbdev, OID_802_11_BSSID_LIST, buf, &len);
2599                 kfree(buf);
2600         }
2601
2602 end:
2603         if (update_jiffies >= HZ)
2604                 update_jiffies = round_jiffies_relative(update_jiffies);
2605         else {
2606                 j = round_jiffies_relative(update_jiffies);
2607                 if (abs(j - update_jiffies) <= 10)
2608                         update_jiffies = j;
2609         }
2610
2611         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
2612                                                                 update_jiffies);
2613 }
2614
2615 /*
2616  * driver/device initialization
2617  */
2618 static void rndis_copy_module_params(struct usbnet *usbdev)
2619 {
2620         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2621
2622         priv->param_country[0] = modparam_country[0];
2623         priv->param_country[1] = modparam_country[1];
2624         priv->param_country[2] = 0;
2625         priv->param_frameburst   = modparam_frameburst;
2626         priv->param_afterburner  = modparam_afterburner;
2627         priv->param_power_save   = modparam_power_save;
2628         priv->param_power_output = modparam_power_output;
2629         priv->param_roamtrigger  = modparam_roamtrigger;
2630         priv->param_roamdelta    = modparam_roamdelta;
2631
2632         priv->param_country[0] = toupper(priv->param_country[0]);
2633         priv->param_country[1] = toupper(priv->param_country[1]);
2634         /* doesn't support EU as country code, use FI instead */
2635         if (!strcmp(priv->param_country, "EU"))
2636                 strcpy(priv->param_country, "FI");
2637
2638         if (priv->param_power_save < 0)
2639                 priv->param_power_save = 0;
2640         else if (priv->param_power_save > 2)
2641                 priv->param_power_save = 2;
2642
2643         if (priv->param_power_output < 0)
2644                 priv->param_power_output = 0;
2645         else if (priv->param_power_output > 3)
2646                 priv->param_power_output = 3;
2647
2648         if (priv->param_roamtrigger < -80)
2649                 priv->param_roamtrigger = -80;
2650         else if (priv->param_roamtrigger > -60)
2651                 priv->param_roamtrigger = -60;
2652
2653         if (priv->param_roamdelta < 0)
2654                 priv->param_roamdelta = 0;
2655         else if (priv->param_roamdelta > 2)
2656                 priv->param_roamdelta = 2;
2657
2658         if (modparam_workaround_interval < 0)
2659                 priv->param_workaround_interval = 500;
2660         else
2661                 priv->param_workaround_interval = modparam_workaround_interval;
2662 }
2663
2664 static int bcm4320a_early_init(struct usbnet *usbdev)
2665 {
2666         /* copy module parameters for bcm4320a so that iwconfig reports txpower
2667          * and workaround parameter is copied to private structure correctly.
2668          */
2669         rndis_copy_module_params(usbdev);
2670
2671         /* bcm4320a doesn't handle configuration parameters well. Try
2672          * set any and you get partially zeroed mac and broken device.
2673          */
2674
2675         return 0;
2676 }
2677
2678 static int bcm4320b_early_init(struct usbnet *usbdev)
2679 {
2680         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2681         char buf[8];
2682
2683         rndis_copy_module_params(usbdev);
2684
2685         /* Early initialization settings, setting these won't have effect
2686          * if called after generic_rndis_bind().
2687          */
2688
2689         rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
2690         rndis_set_config_parameter_str(usbdev, "FrameBursting",
2691                                         priv->param_frameburst ? "1" : "0");
2692         rndis_set_config_parameter_str(usbdev, "Afterburner",
2693                                         priv->param_afterburner ? "1" : "0");
2694         sprintf(buf, "%d", priv->param_power_save);
2695         rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
2696         sprintf(buf, "%d", priv->param_power_output);
2697         rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
2698         sprintf(buf, "%d", priv->param_roamtrigger);
2699         rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
2700         sprintf(buf, "%d", priv->param_roamdelta);
2701         rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
2702
2703         return 0;
2704 }
2705
2706 /* same as rndis_netdev_ops but with local multicast handler */
2707 static const struct net_device_ops rndis_wlan_netdev_ops = {
2708         .ndo_open               = usbnet_open,
2709         .ndo_stop               = usbnet_stop,
2710         .ndo_start_xmit         = usbnet_start_xmit,
2711         .ndo_tx_timeout         = usbnet_tx_timeout,
2712         .ndo_set_mac_address    = eth_mac_addr,
2713         .ndo_validate_addr      = eth_validate_addr,
2714         .ndo_set_multicast_list = rndis_wlan_set_multicast_list,
2715 };
2716
2717 static int rndis_wlan_bind(struct usbnet *usbdev, struct usb_interface *intf)
2718 {
2719         struct wiphy *wiphy;
2720         struct rndis_wlan_private *priv;
2721         int retval, len;
2722         __le32 tmp;
2723
2724         /* allocate wiphy and rndis private data
2725          * NOTE: We only support a single virtual interface, so wiphy
2726          * and wireless_dev are somewhat synonymous for this device.
2727          */
2728         wiphy = wiphy_new(&rndis_config_ops, sizeof(struct rndis_wlan_private));
2729         if (!wiphy)
2730                 return -ENOMEM;
2731
2732         priv = wiphy_priv(wiphy);
2733         usbdev->net->ieee80211_ptr = &priv->wdev;
2734         priv->wdev.wiphy = wiphy;
2735         priv->wdev.iftype = NL80211_IFTYPE_STATION;
2736
2737         /* These have to be initialized before calling generic_rndis_bind().
2738          * Otherwise we'll be in big trouble in rndis_wlan_early_init().
2739          */
2740         usbdev->driver_priv = priv;
2741         priv->usbdev = usbdev;
2742
2743         mutex_init(&priv->command_lock);
2744
2745         /* because rndis_command() sleeps we need to use workqueue */
2746         priv->workqueue = create_singlethread_workqueue("rndis_wlan");
2747         INIT_WORK(&priv->work, rndis_wlan_worker);
2748         INIT_DELAYED_WORK(&priv->dev_poller_work, rndis_device_poller);
2749         INIT_DELAYED_WORK(&priv->scan_work, rndis_get_scan_results);
2750
2751         /* try bind rndis_host */
2752         retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
2753         if (retval < 0)
2754                 goto fail;
2755
2756         /* generic_rndis_bind set packet filter to multicast_all+
2757          * promisc mode which doesn't work well for our devices (device
2758          * picks up rssi to closest station instead of to access point).
2759          *
2760          * rndis_host wants to avoid all OID as much as possible
2761          * so do promisc/multicast handling in rndis_wlan.
2762          */
2763         usbdev->net->netdev_ops = &rndis_wlan_netdev_ops;
2764
2765         tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
2766         retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
2767                                                                 sizeof(tmp));
2768
2769         len = sizeof(tmp);
2770         retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
2771                                                                 &len);
2772         priv->multicast_size = le32_to_cpu(tmp);
2773         if (retval < 0 || priv->multicast_size < 0)
2774                 priv->multicast_size = 0;
2775         if (priv->multicast_size > 0)
2776                 usbdev->net->flags |= IFF_MULTICAST;
2777         else
2778                 usbdev->net->flags &= ~IFF_MULTICAST;
2779
2780         /* fill-out wiphy structure and register w/ cfg80211 */
2781         memcpy(wiphy->perm_addr, usbdev->net->dev_addr, ETH_ALEN);
2782         wiphy->privid = rndis_wiphy_privid;
2783         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION)
2784                                         | BIT(NL80211_IFTYPE_ADHOC);
2785         wiphy->max_scan_ssids = 1;
2786
2787         /* TODO: fill-out band/encr information based on priv->caps */
2788         rndis_wlan_get_caps(usbdev);
2789
2790         memcpy(priv->channels, rndis_channels, sizeof(rndis_channels));
2791         memcpy(priv->rates, rndis_rates, sizeof(rndis_rates));
2792         priv->band.channels = priv->channels;
2793         priv->band.n_channels = ARRAY_SIZE(rndis_channels);
2794         priv->band.bitrates = priv->rates;
2795         priv->band.n_bitrates = ARRAY_SIZE(rndis_rates);
2796         wiphy->bands[IEEE80211_BAND_2GHZ] = &priv->band;
2797         wiphy->signal_type = CFG80211_SIGNAL_TYPE_UNSPEC;
2798
2799         memcpy(priv->cipher_suites, rndis_cipher_suites,
2800                                                 sizeof(rndis_cipher_suites));
2801         wiphy->cipher_suites = priv->cipher_suites;
2802         wiphy->n_cipher_suites = ARRAY_SIZE(rndis_cipher_suites);
2803
2804         set_wiphy_dev(wiphy, &usbdev->udev->dev);
2805
2806         if (wiphy_register(wiphy)) {
2807                 retval = -ENODEV;
2808                 goto fail;
2809         }
2810
2811         set_default_iw_params(usbdev);
2812
2813         /* set default rts/frag */
2814         rndis_set_wiphy_params(wiphy,
2815                         WIPHY_PARAM_FRAG_THRESHOLD | WIPHY_PARAM_RTS_THRESHOLD);
2816
2817         /* turn radio on */
2818         priv->radio_on = true;
2819         disassociate(usbdev, true);
2820         netif_carrier_off(usbdev->net);
2821
2822         return 0;
2823
2824 fail:
2825         cancel_delayed_work_sync(&priv->dev_poller_work);
2826         cancel_delayed_work_sync(&priv->scan_work);
2827         cancel_work_sync(&priv->work);
2828         flush_workqueue(priv->workqueue);
2829         destroy_workqueue(priv->workqueue);
2830
2831         wiphy_free(wiphy);
2832         return retval;
2833 }
2834
2835 static void rndis_wlan_unbind(struct usbnet *usbdev, struct usb_interface *intf)
2836 {
2837         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2838
2839         /* turn radio off */
2840         disassociate(usbdev, false);
2841
2842         cancel_delayed_work_sync(&priv->dev_poller_work);
2843         cancel_delayed_work_sync(&priv->scan_work);
2844         cancel_work_sync(&priv->work);
2845         flush_workqueue(priv->workqueue);
2846         destroy_workqueue(priv->workqueue);
2847
2848         if (priv && priv->wpa_ie_len)
2849                 kfree(priv->wpa_ie);
2850
2851         rndis_unbind(usbdev, intf);
2852
2853         wiphy_unregister(priv->wdev.wiphy);
2854         wiphy_free(priv->wdev.wiphy);
2855 }
2856
2857 static int rndis_wlan_reset(struct usbnet *usbdev)
2858 {
2859         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2860         int retval;
2861
2862         netdev_dbg(usbdev->net, "%s()\n", __func__);
2863
2864         retval = rndis_reset(usbdev);
2865         if (retval)
2866                 netdev_warn(usbdev->net, "rndis_reset failed: %d\n", retval);
2867
2868         /* rndis_reset cleared multicast list, so restore here.
2869            (set_multicast_list() also turns on current packet filter) */
2870         set_multicast_list(usbdev);
2871
2872         queue_delayed_work(priv->workqueue, &priv->dev_poller_work,
2873                 round_jiffies_relative(DEVICE_POLLER_JIFFIES));
2874
2875         return deauthenticate(usbdev);
2876 }
2877
2878 static int rndis_wlan_stop(struct usbnet *usbdev)
2879 {
2880         struct rndis_wlan_private *priv = get_rndis_wlan_priv(usbdev);
2881         int retval;
2882         __le32 filter;
2883
2884         netdev_dbg(usbdev->net, "%s()\n", __func__);
2885
2886         retval = disassociate(usbdev, false);
2887
2888         priv->work_pending = 0;
2889         cancel_delayed_work_sync(&priv->dev_poller_work);
2890         cancel_delayed_work_sync(&priv->scan_work);
2891         cancel_work_sync(&priv->work);
2892         flush_workqueue(priv->workqueue);
2893
2894         if (priv->scan_request) {
2895                 cfg80211_scan_done(priv->scan_request, true);
2896                 priv->scan_request = NULL;
2897         }
2898
2899         /* Set current packet filter zero to block receiving data packets from
2900            device. */
2901         filter = 0;
2902         rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &filter,
2903                                                                 sizeof(filter));
2904
2905         return retval;
2906 }
2907
2908 static const struct driver_info bcm4320b_info = {
2909         .description =  "Wireless RNDIS device, BCM4320b based",
2910         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
2911                                 FLAG_AVOID_UNLINK_URBS,
2912         .bind =         rndis_wlan_bind,
2913         .unbind =       rndis_wlan_unbind,
2914         .status =       rndis_status,
2915         .rx_fixup =     rndis_rx_fixup,
2916         .tx_fixup =     rndis_tx_fixup,
2917         .reset =        rndis_wlan_reset,
2918         .stop =         rndis_wlan_stop,
2919         .early_init =   bcm4320b_early_init,
2920         .indication =   rndis_wlan_indication,
2921 };
2922
2923 static const struct driver_info bcm4320a_info = {
2924         .description =  "Wireless RNDIS device, BCM4320a based",
2925         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
2926                                 FLAG_AVOID_UNLINK_URBS,
2927         .bind =         rndis_wlan_bind,
2928         .unbind =       rndis_wlan_unbind,
2929         .status =       rndis_status,
2930         .rx_fixup =     rndis_rx_fixup,
2931         .tx_fixup =     rndis_tx_fixup,
2932         .reset =        rndis_wlan_reset,
2933         .stop =         rndis_wlan_stop,
2934         .early_init =   bcm4320a_early_init,
2935         .indication =   rndis_wlan_indication,
2936 };
2937
2938 static const struct driver_info rndis_wlan_info = {
2939         .description =  "Wireless RNDIS device",
2940         .flags =        FLAG_WLAN | FLAG_FRAMING_RN | FLAG_NO_SETINT |
2941                                 FLAG_AVOID_UNLINK_URBS,
2942         .bind =         rndis_wlan_bind,
2943         .unbind =       rndis_wlan_unbind,
2944         .status =       rndis_status,
2945         .rx_fixup =     rndis_rx_fixup,
2946         .tx_fixup =     rndis_tx_fixup,
2947         .reset =        rndis_wlan_reset,
2948         .stop =         rndis_wlan_stop,
2949         .early_init =   bcm4320a_early_init,
2950         .indication =   rndis_wlan_indication,
2951 };
2952
2953 /*-------------------------------------------------------------------------*/
2954
2955 static const struct usb_device_id products [] = {
2956 #define RNDIS_MASTER_INTERFACE \
2957         .bInterfaceClass        = USB_CLASS_COMM, \
2958         .bInterfaceSubClass     = 2 /* ACM */, \
2959         .bInterfaceProtocol     = 0x0ff
2960
2961 /* INF driver for these devices have DriverVer >= 4.xx.xx.xx and many custom
2962  * parameters available. Chipset marked as 'BCM4320SKFBG' in NDISwrapper-wiki.
2963  */
2964 {
2965         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2966                           | USB_DEVICE_ID_MATCH_DEVICE,
2967         .idVendor               = 0x0411,
2968         .idProduct              = 0x00bc,       /* Buffalo WLI-U2-KG125S */
2969         RNDIS_MASTER_INTERFACE,
2970         .driver_info            = (unsigned long) &bcm4320b_info,
2971 }, {
2972         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2973                           | USB_DEVICE_ID_MATCH_DEVICE,
2974         .idVendor               = 0x0baf,
2975         .idProduct              = 0x011b,       /* U.S. Robotics USR5421 */
2976         RNDIS_MASTER_INTERFACE,
2977         .driver_info            = (unsigned long) &bcm4320b_info,
2978 }, {
2979         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2980                           | USB_DEVICE_ID_MATCH_DEVICE,
2981         .idVendor               = 0x050d,
2982         .idProduct              = 0x011b,       /* Belkin F5D7051 */
2983         RNDIS_MASTER_INTERFACE,
2984         .driver_info            = (unsigned long) &bcm4320b_info,
2985 }, {
2986         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2987                           | USB_DEVICE_ID_MATCH_DEVICE,
2988         .idVendor               = 0x1799,       /* Belkin has two vendor ids */
2989         .idProduct              = 0x011b,       /* Belkin F5D7051 */
2990         RNDIS_MASTER_INTERFACE,
2991         .driver_info            = (unsigned long) &bcm4320b_info,
2992 }, {
2993         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
2994                           | USB_DEVICE_ID_MATCH_DEVICE,
2995         .idVendor               = 0x13b1,
2996         .idProduct              = 0x0014,       /* Linksys WUSB54GSv2 */
2997         RNDIS_MASTER_INTERFACE,
2998         .driver_info            = (unsigned long) &bcm4320b_info,
2999 }, {
3000         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3001                           | USB_DEVICE_ID_MATCH_DEVICE,
3002         .idVendor               = 0x13b1,
3003         .idProduct              = 0x0026,       /* Linksys WUSB54GSC */
3004         RNDIS_MASTER_INTERFACE,
3005         .driver_info            = (unsigned long) &bcm4320b_info,
3006 }, {
3007         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3008                           | USB_DEVICE_ID_MATCH_DEVICE,
3009         .idVendor               = 0x0b05,
3010         .idProduct              = 0x1717,       /* Asus WL169gE */
3011         RNDIS_MASTER_INTERFACE,
3012         .driver_info            = (unsigned long) &bcm4320b_info,
3013 }, {
3014         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3015                           | USB_DEVICE_ID_MATCH_DEVICE,
3016         .idVendor               = 0x0a5c,
3017         .idProduct              = 0xd11b,       /* Eminent EM4045 */
3018         RNDIS_MASTER_INTERFACE,
3019         .driver_info            = (unsigned long) &bcm4320b_info,
3020 }, {
3021         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3022                           | USB_DEVICE_ID_MATCH_DEVICE,
3023         .idVendor               = 0x1690,
3024         .idProduct              = 0x0715,       /* BT Voyager 1055 */
3025         RNDIS_MASTER_INTERFACE,
3026         .driver_info            = (unsigned long) &bcm4320b_info,
3027 },
3028 /* These devices have DriverVer < 4.xx.xx.xx and do not have any custom
3029  * parameters available, hardware probably contain older firmware version with
3030  * no way of updating. Chipset marked as 'BCM4320????' in NDISwrapper-wiki.
3031  */
3032 {
3033         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3034                           | USB_DEVICE_ID_MATCH_DEVICE,
3035         .idVendor               = 0x13b1,
3036         .idProduct              = 0x000e,       /* Linksys WUSB54GSv1 */
3037         RNDIS_MASTER_INTERFACE,
3038         .driver_info            = (unsigned long) &bcm4320a_info,
3039 }, {
3040         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3041                           | USB_DEVICE_ID_MATCH_DEVICE,
3042         .idVendor               = 0x0baf,
3043         .idProduct              = 0x0111,       /* U.S. Robotics USR5420 */
3044         RNDIS_MASTER_INTERFACE,
3045         .driver_info            = (unsigned long) &bcm4320a_info,
3046 }, {
3047         .match_flags    =   USB_DEVICE_ID_MATCH_INT_INFO
3048                           | USB_DEVICE_ID_MATCH_DEVICE,
3049         .idVendor               = 0x0411,
3050         .idProduct              = 0x004b,       /* BUFFALO WLI-USB-G54 */
3051         RNDIS_MASTER_INTERFACE,
3052         .driver_info            = (unsigned long) &bcm4320a_info,
3053 },
3054 /* Generic Wireless RNDIS devices that we don't have exact
3055  * idVendor/idProduct/chip yet.
3056  */
3057 {
3058         /* RNDIS is MSFT's un-official variant of CDC ACM */
3059         USB_INTERFACE_INFO(USB_CLASS_COMM, 2 /* ACM */, 0x0ff),
3060         .driver_info = (unsigned long) &rndis_wlan_info,
3061 }, {
3062         /* "ActiveSync" is an undocumented variant of RNDIS, used in WM5 */
3063         USB_INTERFACE_INFO(USB_CLASS_MISC, 1, 1),
3064         .driver_info = (unsigned long) &rndis_wlan_info,
3065 },
3066         { },            // END
3067 };
3068 MODULE_DEVICE_TABLE(usb, products);
3069
3070 static struct usb_driver rndis_wlan_driver = {
3071         .name =         "rndis_wlan",
3072         .id_table =     products,
3073         .probe =        usbnet_probe,
3074         .disconnect =   usbnet_disconnect,
3075         .suspend =      usbnet_suspend,
3076         .resume =       usbnet_resume,
3077 };
3078
3079 static int __init rndis_wlan_init(void)
3080 {
3081         return usb_register(&rndis_wlan_driver);
3082 }
3083 module_init(rndis_wlan_init);
3084
3085 static void __exit rndis_wlan_exit(void)
3086 {
3087         usb_deregister(&rndis_wlan_driver);
3088 }
3089 module_exit(rndis_wlan_exit);
3090
3091 MODULE_AUTHOR("Bjorge Dijkstra");
3092 MODULE_AUTHOR("Jussi Kivilinna");
3093 MODULE_DESCRIPTION("Driver for RNDIS based USB Wireless adapters");
3094 MODULE_LICENSE("GPL");
3095