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ath6kl: Fix crash during the connection process
[deliverable/linux.git] / drivers / net / wireless / ath / ath6kl / cfg80211.c
1 /*
2 * Copyright (c) 2004-2011 Atheros Communications Inc.
3 *
4 * Permission to use, copy, modify, and/or distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
7 *
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16
17 #include "core.h"
18 #include "cfg80211.h"
19 #include "debug.h"
20
21 #define RATETAB_ENT(_rate, _rateid, _flags) { \
22 .bitrate = (_rate), \
23 .flags = (_flags), \
24 .hw_value = (_rateid), \
25 }
26
27 #define CHAN2G(_channel, _freq, _flags) { \
28 .band = IEEE80211_BAND_2GHZ, \
29 .hw_value = (_channel), \
30 .center_freq = (_freq), \
31 .flags = (_flags), \
32 .max_antenna_gain = 0, \
33 .max_power = 30, \
34 }
35
36 #define CHAN5G(_channel, _flags) { \
37 .band = IEEE80211_BAND_5GHZ, \
38 .hw_value = (_channel), \
39 .center_freq = 5000 + (5 * (_channel)), \
40 .flags = (_flags), \
41 .max_antenna_gain = 0, \
42 .max_power = 30, \
43 }
44
45 static struct ieee80211_rate ath6kl_rates[] = {
46 RATETAB_ENT(10, 0x1, 0),
47 RATETAB_ENT(20, 0x2, 0),
48 RATETAB_ENT(55, 0x4, 0),
49 RATETAB_ENT(110, 0x8, 0),
50 RATETAB_ENT(60, 0x10, 0),
51 RATETAB_ENT(90, 0x20, 0),
52 RATETAB_ENT(120, 0x40, 0),
53 RATETAB_ENT(180, 0x80, 0),
54 RATETAB_ENT(240, 0x100, 0),
55 RATETAB_ENT(360, 0x200, 0),
56 RATETAB_ENT(480, 0x400, 0),
57 RATETAB_ENT(540, 0x800, 0),
58 };
59
60 #define ath6kl_a_rates (ath6kl_rates + 4)
61 #define ath6kl_a_rates_size 8
62 #define ath6kl_g_rates (ath6kl_rates + 0)
63 #define ath6kl_g_rates_size 12
64
65 static struct ieee80211_channel ath6kl_2ghz_channels[] = {
66 CHAN2G(1, 2412, 0),
67 CHAN2G(2, 2417, 0),
68 CHAN2G(3, 2422, 0),
69 CHAN2G(4, 2427, 0),
70 CHAN2G(5, 2432, 0),
71 CHAN2G(6, 2437, 0),
72 CHAN2G(7, 2442, 0),
73 CHAN2G(8, 2447, 0),
74 CHAN2G(9, 2452, 0),
75 CHAN2G(10, 2457, 0),
76 CHAN2G(11, 2462, 0),
77 CHAN2G(12, 2467, 0),
78 CHAN2G(13, 2472, 0),
79 CHAN2G(14, 2484, 0),
80 };
81
82 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = {
83 CHAN5G(34, 0), CHAN5G(36, 0),
84 CHAN5G(38, 0), CHAN5G(40, 0),
85 CHAN5G(42, 0), CHAN5G(44, 0),
86 CHAN5G(46, 0), CHAN5G(48, 0),
87 CHAN5G(52, 0), CHAN5G(56, 0),
88 CHAN5G(60, 0), CHAN5G(64, 0),
89 CHAN5G(100, 0), CHAN5G(104, 0),
90 CHAN5G(108, 0), CHAN5G(112, 0),
91 CHAN5G(116, 0), CHAN5G(120, 0),
92 CHAN5G(124, 0), CHAN5G(128, 0),
93 CHAN5G(132, 0), CHAN5G(136, 0),
94 CHAN5G(140, 0), CHAN5G(149, 0),
95 CHAN5G(153, 0), CHAN5G(157, 0),
96 CHAN5G(161, 0), CHAN5G(165, 0),
97 CHAN5G(184, 0), CHAN5G(188, 0),
98 CHAN5G(192, 0), CHAN5G(196, 0),
99 CHAN5G(200, 0), CHAN5G(204, 0),
100 CHAN5G(208, 0), CHAN5G(212, 0),
101 CHAN5G(216, 0),
102 };
103
104 static struct ieee80211_supported_band ath6kl_band_2ghz = {
105 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels),
106 .channels = ath6kl_2ghz_channels,
107 .n_bitrates = ath6kl_g_rates_size,
108 .bitrates = ath6kl_g_rates,
109 };
110
111 static struct ieee80211_supported_band ath6kl_band_5ghz = {
112 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels),
113 .channels = ath6kl_5ghz_a_channels,
114 .n_bitrates = ath6kl_a_rates_size,
115 .bitrates = ath6kl_a_rates,
116 };
117
118 static int ath6kl_set_wpa_version(struct ath6kl *ar,
119 enum nl80211_wpa_versions wpa_version)
120 {
121 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version);
122
123 if (!wpa_version) {
124 ar->auth_mode = NONE_AUTH;
125 } else if (wpa_version & NL80211_WPA_VERSION_2) {
126 ar->auth_mode = WPA2_AUTH;
127 } else if (wpa_version & NL80211_WPA_VERSION_1) {
128 ar->auth_mode = WPA_AUTH;
129 } else {
130 ath6kl_err("%s: %u not supported\n", __func__, wpa_version);
131 return -ENOTSUPP;
132 }
133
134 return 0;
135 }
136
137 static int ath6kl_set_auth_type(struct ath6kl *ar,
138 enum nl80211_auth_type auth_type)
139 {
140
141 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type);
142
143 switch (auth_type) {
144 case NL80211_AUTHTYPE_OPEN_SYSTEM:
145 ar->dot11_auth_mode = OPEN_AUTH;
146 break;
147 case NL80211_AUTHTYPE_SHARED_KEY:
148 ar->dot11_auth_mode = SHARED_AUTH;
149 break;
150 case NL80211_AUTHTYPE_NETWORK_EAP:
151 ar->dot11_auth_mode = LEAP_AUTH;
152 break;
153
154 case NL80211_AUTHTYPE_AUTOMATIC:
155 ar->dot11_auth_mode = OPEN_AUTH;
156 ar->auto_auth_stage = AUTH_OPEN_IN_PROGRESS;
157 break;
158
159 default:
160 ath6kl_err("%s: 0x%x not spported\n", __func__, auth_type);
161 return -ENOTSUPP;
162 }
163
164 return 0;
165 }
166
167 static int ath6kl_set_cipher(struct ath6kl *ar, u32 cipher, bool ucast)
168 {
169 u8 *ar_cipher = ucast ? &ar->prwise_crypto : &ar->grp_crypto;
170 u8 *ar_cipher_len = ucast ? &ar->prwise_crypto_len : &ar->grp_crpto_len;
171
172 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n",
173 __func__, cipher, ucast);
174
175 switch (cipher) {
176 case 0:
177 /* our own hack to use value 0 as no crypto used */
178 *ar_cipher = NONE_CRYPT;
179 *ar_cipher_len = 0;
180 break;
181 case WLAN_CIPHER_SUITE_WEP40:
182 *ar_cipher = WEP_CRYPT;
183 *ar_cipher_len = 5;
184 break;
185 case WLAN_CIPHER_SUITE_WEP104:
186 *ar_cipher = WEP_CRYPT;
187 *ar_cipher_len = 13;
188 break;
189 case WLAN_CIPHER_SUITE_TKIP:
190 *ar_cipher = TKIP_CRYPT;
191 *ar_cipher_len = 0;
192 break;
193 case WLAN_CIPHER_SUITE_CCMP:
194 *ar_cipher = AES_CRYPT;
195 *ar_cipher_len = 0;
196 break;
197 default:
198 ath6kl_err("cipher 0x%x not supported\n", cipher);
199 return -ENOTSUPP;
200 }
201
202 return 0;
203 }
204
205 static void ath6kl_set_key_mgmt(struct ath6kl *ar, u32 key_mgmt)
206 {
207 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt);
208
209 if (key_mgmt == WLAN_AKM_SUITE_PSK) {
210 if (ar->auth_mode == WPA_AUTH)
211 ar->auth_mode = WPA_PSK_AUTH;
212 else if (ar->auth_mode == WPA2_AUTH)
213 ar->auth_mode = WPA2_PSK_AUTH;
214 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) {
215 ar->auth_mode = NONE_AUTH;
216 }
217 }
218
219 static bool ath6kl_cfg80211_ready(struct ath6kl *ar)
220 {
221 if (!test_bit(WMI_READY, &ar->flag)) {
222 ath6kl_err("wmi is not ready\n");
223 return false;
224 }
225
226 if (!test_bit(WLAN_ENABLED, &ar->flag)) {
227 ath6kl_err("wlan disabled\n");
228 return false;
229 }
230
231 return true;
232 }
233
234 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
235 struct cfg80211_connect_params *sme)
236 {
237 struct ath6kl *ar = ath6kl_priv(dev);
238 int status;
239
240 ar->sme_state = SME_CONNECTING;
241
242 if (!ath6kl_cfg80211_ready(ar))
243 return -EIO;
244
245 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
246 ath6kl_err("destroy in progress\n");
247 return -EBUSY;
248 }
249
250 if (test_bit(SKIP_SCAN, &ar->flag) &&
251 ((sme->channel && sme->channel->center_freq == 0) ||
252 (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
253 ath6kl_err("SkipScan: channel or bssid invalid\n");
254 return -EINVAL;
255 }
256
257 if (down_interruptible(&ar->sem)) {
258 ath6kl_err("busy, couldn't get access\n");
259 return -ERESTARTSYS;
260 }
261
262 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
263 ath6kl_err("busy, destroy in progress\n");
264 up(&ar->sem);
265 return -EBUSY;
266 }
267
268 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
269 /*
270 * sleep until the command queue drains
271 */
272 wait_event_interruptible_timeout(ar->event_wq,
273 ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0,
274 WMI_TIMEOUT);
275 if (signal_pending(current)) {
276 ath6kl_err("cmd queue drain timeout\n");
277 up(&ar->sem);
278 return -EINTR;
279 }
280 }
281
282 if (test_bit(CONNECTED, &ar->flag) &&
283 ar->ssid_len == sme->ssid_len &&
284 !memcmp(ar->ssid, sme->ssid, ar->ssid_len)) {
285 ar->reconnect_flag = true;
286 status = ath6kl_wmi_reconnect_cmd(ar->wmi, ar->req_bssid,
287 ar->ch_hint);
288
289 up(&ar->sem);
290 if (status) {
291 ath6kl_err("wmi_reconnect_cmd failed\n");
292 return -EIO;
293 }
294 return 0;
295 } else if (ar->ssid_len == sme->ssid_len &&
296 !memcmp(ar->ssid, sme->ssid, ar->ssid_len)) {
297 ath6kl_disconnect(ar);
298 }
299
300 memset(ar->ssid, 0, sizeof(ar->ssid));
301 ar->ssid_len = sme->ssid_len;
302 memcpy(ar->ssid, sme->ssid, sme->ssid_len);
303
304 if (sme->channel)
305 ar->ch_hint = sme->channel->center_freq;
306
307 memset(ar->req_bssid, 0, sizeof(ar->req_bssid));
308 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
309 memcpy(ar->req_bssid, sme->bssid, sizeof(ar->req_bssid));
310
311 ath6kl_set_wpa_version(ar, sme->crypto.wpa_versions);
312
313 status = ath6kl_set_auth_type(ar, sme->auth_type);
314 if (status) {
315 up(&ar->sem);
316 return status;
317 }
318
319 if (sme->crypto.n_ciphers_pairwise)
320 ath6kl_set_cipher(ar, sme->crypto.ciphers_pairwise[0], true);
321 else
322 ath6kl_set_cipher(ar, 0, true);
323
324 ath6kl_set_cipher(ar, sme->crypto.cipher_group, false);
325
326 if (sme->crypto.n_akm_suites)
327 ath6kl_set_key_mgmt(ar, sme->crypto.akm_suites[0]);
328
329 if ((sme->key_len) &&
330 (ar->auth_mode == NONE_AUTH) && (ar->prwise_crypto == WEP_CRYPT)) {
331 struct ath6kl_key *key = NULL;
332
333 if (sme->key_idx < WMI_MIN_KEY_INDEX ||
334 sme->key_idx > WMI_MAX_KEY_INDEX) {
335 ath6kl_err("key index %d out of bounds\n",
336 sme->key_idx);
337 up(&ar->sem);
338 return -ENOENT;
339 }
340
341 key = &ar->keys[sme->key_idx];
342 key->key_len = sme->key_len;
343 memcpy(key->key, sme->key, key->key_len);
344 key->cipher = ar->prwise_crypto;
345 ar->def_txkey_index = sme->key_idx;
346
347 ath6kl_wmi_addkey_cmd(ar->wmi, sme->key_idx,
348 ar->prwise_crypto,
349 GROUP_USAGE | TX_USAGE,
350 key->key_len,
351 NULL,
352 key->key, KEY_OP_INIT_VAL, NULL,
353 NO_SYNC_WMIFLAG);
354 }
355
356 if (!ar->usr_bss_filter) {
357 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, ALL_BSS_FILTER, 0) != 0) {
358 ath6kl_err("couldn't set bss filtering\n");
359 up(&ar->sem);
360 return -EIO;
361 }
362 }
363
364 ar->nw_type = ar->next_mode;
365
366 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
367 "%s: connect called with authmode %d dot11 auth %d"
368 " PW crypto %d PW crypto len %d GRP crypto %d"
369 " GRP crypto len %d channel hint %u\n",
370 __func__,
371 ar->auth_mode, ar->dot11_auth_mode, ar->prwise_crypto,
372 ar->prwise_crypto_len, ar->grp_crypto,
373 ar->grp_crpto_len, ar->ch_hint);
374
375 ar->reconnect_flag = 0;
376 status = ath6kl_wmi_connect_cmd(ar->wmi, ar->nw_type,
377 ar->dot11_auth_mode, ar->auth_mode,
378 ar->prwise_crypto,
379 ar->prwise_crypto_len,
380 ar->grp_crypto, ar->grp_crpto_len,
381 ar->ssid_len, ar->ssid,
382 ar->req_bssid, ar->ch_hint,
383 ar->connect_ctrl_flags);
384
385 up(&ar->sem);
386
387 if (status == -EINVAL) {
388 memset(ar->ssid, 0, sizeof(ar->ssid));
389 ar->ssid_len = 0;
390 ath6kl_err("invalid request\n");
391 return -ENOENT;
392 } else if (status) {
393 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
394 return -EIO;
395 }
396
397 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
398 ((ar->auth_mode == WPA_PSK_AUTH)
399 || (ar->auth_mode == WPA2_PSK_AUTH))) {
400 mod_timer(&ar->disconnect_timer,
401 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
402 }
403
404 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
405 set_bit(CONNECT_PEND, &ar->flag);
406
407 return 0;
408 }
409
410 void ath6kl_cfg80211_connect_event(struct ath6kl *ar, u16 channel,
411 u8 *bssid, u16 listen_intvl,
412 u16 beacon_intvl,
413 enum network_type nw_type,
414 u8 beacon_ie_len, u8 assoc_req_len,
415 u8 assoc_resp_len, u8 *assoc_info)
416 {
417 u16 size = 0;
418 u16 capability = 0;
419 struct cfg80211_bss *bss = NULL;
420 struct ieee80211_mgmt *mgmt = NULL;
421 struct ieee80211_channel *ibss_ch = NULL;
422 s32 signal = 50 * 100;
423 u8 ie_buf_len = 0;
424 unsigned char ie_buf[256];
425 unsigned char *ptr_ie_buf = ie_buf;
426 unsigned char *ieeemgmtbuf = NULL;
427 u8 source_mac[ETH_ALEN];
428 u16 capa_mask;
429 u16 capa_val;
430
431 /* capinfo + listen interval */
432 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
433
434 /* capinfo + status code + associd */
435 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
436
437 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
438 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
439 assoc_resp_ie_offset;
440
441 assoc_req_len -= assoc_req_ie_offset;
442 assoc_resp_len -= assoc_resp_ie_offset;
443
444 ar->auto_auth_stage = AUTH_IDLE;
445
446 if (nw_type & ADHOC_NETWORK) {
447 if (ar->wdev->iftype != NL80211_IFTYPE_ADHOC) {
448 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
449 "%s: ath6k not in ibss mode\n", __func__);
450 return;
451 }
452 }
453
454 if (nw_type & INFRA_NETWORK) {
455 if (ar->wdev->iftype != NL80211_IFTYPE_STATION) {
456 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
457 "%s: ath6k not in station mode\n", __func__);
458 return;
459 }
460 }
461
462 if (nw_type & ADHOC_NETWORK) {
463 capa_mask = WLAN_CAPABILITY_IBSS;
464 capa_val = WLAN_CAPABILITY_IBSS;
465 } else {
466 capa_mask = WLAN_CAPABILITY_ESS;
467 capa_val = WLAN_CAPABILITY_ESS;
468 }
469
470 /* Before informing the join/connect event, make sure that
471 * bss entry is present in scan list, if it not present
472 * construct and insert into scan list, otherwise that
473 * event will be dropped on the way by cfg80211, due to
474 * this keys will not be plumbed in case of WEP and
475 * application will not be aware of join/connect status. */
476 bss = cfg80211_get_bss(ar->wdev->wiphy, NULL, bssid,
477 ar->wdev->ssid, ar->wdev->ssid_len,
478 capa_mask, capa_val);
479
480 /*
481 * Earlier we were updating the cfg about bss by making a beacon frame
482 * only if the entry for bss is not there. This can have some issue if
483 * ROAM event is generated and a heavy traffic is ongoing. The ROAM
484 * event is handled through a work queue and by the time it really gets
485 * handled, BSS would have been aged out. So it is better to update the
486 * cfg about BSS irrespective of its entry being present right now or
487 * not.
488 */
489
490 if (nw_type & ADHOC_NETWORK) {
491 /* construct 802.11 mgmt beacon */
492 if (ptr_ie_buf) {
493 *ptr_ie_buf++ = WLAN_EID_SSID;
494 *ptr_ie_buf++ = ar->ssid_len;
495 memcpy(ptr_ie_buf, ar->ssid, ar->ssid_len);
496 ptr_ie_buf += ar->ssid_len;
497
498 *ptr_ie_buf++ = WLAN_EID_IBSS_PARAMS;
499 *ptr_ie_buf++ = 2; /* length */
500 *ptr_ie_buf++ = 0; /* ATIM window */
501 *ptr_ie_buf++ = 0; /* ATIM window */
502
503 /* TODO: update ibss params and include supported rates,
504 * DS param set, extened support rates, wmm. */
505
506 ie_buf_len = ptr_ie_buf - ie_buf;
507 }
508
509 capability |= WLAN_CAPABILITY_IBSS;
510
511 if (ar->prwise_crypto == WEP_CRYPT)
512 capability |= WLAN_CAPABILITY_PRIVACY;
513
514 memcpy(source_mac, ar->net_dev->dev_addr, ETH_ALEN);
515 ptr_ie_buf = ie_buf;
516 } else {
517 capability = *(u16 *) (&assoc_info[beacon_ie_len]);
518 memcpy(source_mac, bssid, ETH_ALEN);
519 ptr_ie_buf = assoc_req_ie;
520 ie_buf_len = assoc_req_len;
521 }
522
523 size = offsetof(struct ieee80211_mgmt, u)
524 + sizeof(mgmt->u.beacon)
525 + ie_buf_len;
526
527 ieeemgmtbuf = kzalloc(size, GFP_ATOMIC);
528 if (!ieeemgmtbuf) {
529 ath6kl_err("ieee mgmt buf alloc error\n");
530 cfg80211_put_bss(bss);
531 return;
532 }
533
534 mgmt = (struct ieee80211_mgmt *)ieeemgmtbuf;
535 mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
536 IEEE80211_STYPE_BEACON);
537 memset(mgmt->da, 0xff, ETH_ALEN); /* broadcast addr */
538 memcpy(mgmt->sa, source_mac, ETH_ALEN);
539 memcpy(mgmt->bssid, bssid, ETH_ALEN);
540 mgmt->u.beacon.beacon_int = cpu_to_le16(beacon_intvl);
541 mgmt->u.beacon.capab_info = cpu_to_le16(capability);
542 memcpy(mgmt->u.beacon.variable, ptr_ie_buf, ie_buf_len);
543
544 ibss_ch = ieee80211_get_channel(ar->wdev->wiphy, (int)channel);
545
546 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
547 "%s: inform bss with bssid %pM channel %d beacon_intvl %d capability 0x%x\n",
548 __func__, mgmt->bssid, ibss_ch->hw_value,
549 beacon_intvl, capability);
550
551 bss = cfg80211_inform_bss_frame(ar->wdev->wiphy,
552 ibss_ch, mgmt,
553 size, signal, GFP_KERNEL);
554 kfree(ieeemgmtbuf);
555 cfg80211_put_bss(bss);
556
557 if (nw_type & ADHOC_NETWORK) {
558 cfg80211_ibss_joined(ar->net_dev, bssid, GFP_KERNEL);
559 return;
560 }
561
562 if (ar->sme_state == SME_CONNECTING) {
563 /* inform connect result to cfg80211 */
564 ar->sme_state = SME_CONNECTED;
565 cfg80211_connect_result(ar->net_dev, bssid,
566 assoc_req_ie, assoc_req_len,
567 assoc_resp_ie, assoc_resp_len,
568 WLAN_STATUS_SUCCESS, GFP_KERNEL);
569 } else if (ar->sme_state == SME_CONNECTED) {
570 /* inform roam event to cfg80211 */
571 cfg80211_roamed(ar->net_dev, ibss_ch, bssid,
572 assoc_req_ie, assoc_req_len,
573 assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
574 }
575 }
576
577 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
578 struct net_device *dev, u16 reason_code)
579 {
580 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(dev);
581
582 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
583 reason_code);
584
585 if (!ath6kl_cfg80211_ready(ar))
586 return -EIO;
587
588 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
589 ath6kl_err("busy, destroy in progress\n");
590 return -EBUSY;
591 }
592
593 if (down_interruptible(&ar->sem)) {
594 ath6kl_err("busy, couldn't get access\n");
595 return -ERESTARTSYS;
596 }
597
598 ar->reconnect_flag = 0;
599 ath6kl_disconnect(ar);
600 memset(ar->ssid, 0, sizeof(ar->ssid));
601 ar->ssid_len = 0;
602
603 if (!test_bit(SKIP_SCAN, &ar->flag))
604 memset(ar->req_bssid, 0, sizeof(ar->req_bssid));
605
606 up(&ar->sem);
607
608 return 0;
609 }
610
611 void ath6kl_cfg80211_disconnect_event(struct ath6kl *ar, u8 reason,
612 u8 *bssid, u8 assoc_resp_len,
613 u8 *assoc_info, u16 proto_reason)
614 {
615 struct ath6kl_key *key = NULL;
616 u16 status;
617
618 if (ar->scan_req) {
619 cfg80211_scan_done(ar->scan_req, true);
620 ar->scan_req = NULL;
621 }
622
623 if (ar->nw_type & ADHOC_NETWORK) {
624 if (ar->wdev->iftype != NL80211_IFTYPE_ADHOC) {
625 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
626 "%s: ath6k not in ibss mode\n", __func__);
627 return;
628 }
629 memset(bssid, 0, ETH_ALEN);
630 cfg80211_ibss_joined(ar->net_dev, bssid, GFP_KERNEL);
631 return;
632 }
633
634 if (ar->nw_type & INFRA_NETWORK) {
635 if (ar->wdev->iftype != NL80211_IFTYPE_STATION) {
636 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
637 "%s: ath6k not in station mode\n", __func__);
638 return;
639 }
640 }
641
642 if (!test_bit(CONNECT_PEND, &ar->flag)) {
643 if (reason != DISCONNECT_CMD)
644 ath6kl_wmi_disconnect_cmd(ar->wmi);
645
646 return;
647 }
648
649 if (reason == NO_NETWORK_AVAIL) {
650 /* connect cmd failed */
651 ath6kl_wmi_disconnect_cmd(ar->wmi);
652 return;
653 }
654
655 if (reason != DISCONNECT_CMD)
656 return;
657
658 if (!ar->auto_auth_stage) {
659 clear_bit(CONNECT_PEND, &ar->flag);
660
661 if (ar->sme_state == SME_CONNECTING) {
662 cfg80211_connect_result(ar->net_dev,
663 bssid, NULL, 0,
664 NULL, 0,
665 WLAN_STATUS_UNSPECIFIED_FAILURE,
666 GFP_KERNEL);
667 } else {
668 cfg80211_disconnected(ar->net_dev, reason,
669 NULL, 0, GFP_KERNEL);
670 }
671
672 ar->sme_state = SME_DISCONNECTED;
673 return;
674 }
675
676 if (ar->dot11_auth_mode != OPEN_AUTH)
677 return;
678
679 /*
680 * If the current auth algorithm is open, try shared and
681 * make autoAuthStage idle. We do not make it leap for now
682 * being.
683 */
684 key = &ar->keys[ar->def_txkey_index];
685 if (down_interruptible(&ar->sem)) {
686 ath6kl_err("busy, couldn't get access\n");
687 return;
688 }
689
690 ar->dot11_auth_mode = SHARED_AUTH;
691 ar->auto_auth_stage = AUTH_IDLE;
692
693 ath6kl_wmi_addkey_cmd(ar->wmi,
694 ar->def_txkey_index,
695 ar->prwise_crypto,
696 GROUP_USAGE | TX_USAGE,
697 key->key_len, NULL,
698 key->key,
699 KEY_OP_INIT_VAL, NULL,
700 NO_SYNC_WMIFLAG);
701
702 status = ath6kl_wmi_connect_cmd(ar->wmi,
703 ar->nw_type,
704 ar->dot11_auth_mode,
705 ar->auth_mode,
706 ar->prwise_crypto,
707 ar->prwise_crypto_len,
708 ar->grp_crypto,
709 ar->grp_crpto_len,
710 ar->ssid_len,
711 ar->ssid,
712 ar->req_bssid,
713 ar->ch_hint,
714 ar->connect_ctrl_flags);
715 up(&ar->sem);
716 }
717
718 static inline bool is_ch_11a(u16 ch)
719 {
720 return (!((ch >= 2412) && (ch <= 2484)));
721 }
722
723 /* struct ath6kl_node_table::nt_nodelock is locked when calling this */
724 void ath6kl_cfg80211_scan_node(struct wiphy *wiphy, struct bss *ni)
725 {
726 u16 size;
727 unsigned char *ieeemgmtbuf = NULL;
728 struct ieee80211_mgmt *mgmt;
729 struct ieee80211_channel *channel;
730 struct ieee80211_supported_band *band;
731 struct ath6kl_common_ie *cie;
732 s32 signal;
733 int freq;
734
735 cie = &ni->ni_cie;
736
737 if (is_ch_11a(cie->ie_chan))
738 band = wiphy->bands[IEEE80211_BAND_5GHZ]; /* 11a */
739 else if ((cie->ie_erp) || (cie->ie_xrates))
740 band = wiphy->bands[IEEE80211_BAND_2GHZ]; /* 11g */
741 else
742 band = wiphy->bands[IEEE80211_BAND_2GHZ]; /* 11b */
743
744 size = ni->ni_framelen + offsetof(struct ieee80211_mgmt, u);
745 ieeemgmtbuf = kmalloc(size, GFP_ATOMIC);
746 if (!ieeemgmtbuf) {
747 ath6kl_err("ieee mgmt buf alloc error\n");
748 return;
749 }
750
751 /*
752 * TODO: Update target to include 802.11 mac header while sending
753 * bss info. Target removes 802.11 mac header while sending the bss
754 * info to host, cfg80211 needs it, for time being just filling the
755 * da, sa and bssid fields alone.
756 */
757 mgmt = (struct ieee80211_mgmt *)ieeemgmtbuf;
758 memset(mgmt->da, 0xff, ETH_ALEN); /*broadcast addr */
759 memcpy(mgmt->sa, ni->ni_macaddr, ETH_ALEN);
760 memcpy(mgmt->bssid, ni->ni_macaddr, ETH_ALEN);
761 memcpy(ieeemgmtbuf + offsetof(struct ieee80211_mgmt, u),
762 ni->ni_buf, ni->ni_framelen);
763
764 freq = cie->ie_chan;
765 channel = ieee80211_get_channel(wiphy, freq);
766 signal = ni->ni_snr * 100;
767
768 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
769 "%s: bssid %pM ch %d freq %d size %d\n", __func__,
770 mgmt->bssid, channel->hw_value, freq, size);
771 cfg80211_inform_bss_frame(wiphy, channel, mgmt,
772 size, signal, GFP_ATOMIC);
773
774 kfree(ieeemgmtbuf);
775 }
776
777 static int ath6kl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
778 struct cfg80211_scan_request *request)
779 {
780 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
781 int ret = 0;
782
783 if (!ath6kl_cfg80211_ready(ar))
784 return -EIO;
785
786 if (!ar->usr_bss_filter) {
787 if (ath6kl_wmi_bssfilter_cmd(ar->wmi,
788 (test_bit(CONNECTED, &ar->flag) ?
789 ALL_BUT_BSS_FILTER :
790 ALL_BSS_FILTER), 0) != 0) {
791 ath6kl_err("couldn't set bss filtering\n");
792 return -EIO;
793 }
794 }
795
796 if (request->n_ssids && request->ssids[0].ssid_len) {
797 u8 i;
798
799 if (request->n_ssids > (MAX_PROBED_SSID_INDEX - 1))
800 request->n_ssids = MAX_PROBED_SSID_INDEX - 1;
801
802 for (i = 0; i < request->n_ssids; i++)
803 ath6kl_wmi_probedssid_cmd(ar->wmi, i + 1,
804 SPECIFIC_SSID_FLAG,
805 request->ssids[i].ssid_len,
806 request->ssids[i].ssid);
807 }
808
809 if (ath6kl_wmi_startscan_cmd(ar->wmi, WMI_LONG_SCAN, 0,
810 false, 0, 0, 0, NULL) != 0) {
811 ath6kl_err("wmi_startscan_cmd failed\n");
812 ret = -EIO;
813 }
814
815 ar->scan_req = request;
816
817 return ret;
818 }
819
820 void ath6kl_cfg80211_scan_complete_event(struct ath6kl *ar, int status)
821 {
822 int i;
823
824 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status %d\n", __func__, status);
825
826 if (!ar->scan_req)
827 return;
828
829 if ((status == -ECANCELED) || (status == -EBUSY)) {
830 cfg80211_scan_done(ar->scan_req, true);
831 goto out;
832 }
833
834 /* Translate data to cfg80211 mgmt format */
835 wlan_iterate_nodes(&ar->scan_table, ar->wdev->wiphy);
836
837 cfg80211_scan_done(ar->scan_req, false);
838
839 if (ar->scan_req->n_ssids && ar->scan_req->ssids[0].ssid_len) {
840 for (i = 0; i < ar->scan_req->n_ssids; i++) {
841 ath6kl_wmi_probedssid_cmd(ar->wmi, i + 1,
842 DISABLE_SSID_FLAG,
843 0, NULL);
844 }
845 }
846
847 out:
848 ar->scan_req = NULL;
849 }
850
851 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
852 u8 key_index, bool pairwise,
853 const u8 *mac_addr,
854 struct key_params *params)
855 {
856 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
857 struct ath6kl_key *key = NULL;
858 u8 key_usage;
859 u8 key_type;
860 int status = 0;
861
862 if (!ath6kl_cfg80211_ready(ar))
863 return -EIO;
864
865 if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) {
866 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
867 "%s: key index %d out of bounds\n", __func__,
868 key_index);
869 return -ENOENT;
870 }
871
872 key = &ar->keys[key_index];
873 memset(key, 0, sizeof(struct ath6kl_key));
874
875 if (pairwise)
876 key_usage = PAIRWISE_USAGE;
877 else
878 key_usage = GROUP_USAGE;
879
880 if (params) {
881 if (params->key_len > WLAN_MAX_KEY_LEN ||
882 params->seq_len > sizeof(key->seq))
883 return -EINVAL;
884
885 key->key_len = params->key_len;
886 memcpy(key->key, params->key, key->key_len);
887 key->seq_len = params->seq_len;
888 memcpy(key->seq, params->seq, key->seq_len);
889 key->cipher = params->cipher;
890 }
891
892 switch (key->cipher) {
893 case WLAN_CIPHER_SUITE_WEP40:
894 case WLAN_CIPHER_SUITE_WEP104:
895 key_type = WEP_CRYPT;
896 break;
897
898 case WLAN_CIPHER_SUITE_TKIP:
899 key_type = TKIP_CRYPT;
900 break;
901
902 case WLAN_CIPHER_SUITE_CCMP:
903 key_type = AES_CRYPT;
904 break;
905
906 default:
907 return -ENOTSUPP;
908 }
909
910 if (((ar->auth_mode == WPA_PSK_AUTH)
911 || (ar->auth_mode == WPA2_PSK_AUTH))
912 && (key_usage & GROUP_USAGE))
913 del_timer(&ar->disconnect_timer);
914
915 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
916 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
917 __func__, key_index, key->key_len, key_type,
918 key_usage, key->seq_len);
919
920 ar->def_txkey_index = key_index;
921 status = ath6kl_wmi_addkey_cmd(ar->wmi, ar->def_txkey_index,
922 key_type, key_usage, key->key_len,
923 key->seq, key->key, KEY_OP_INIT_VAL,
924 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
925
926 if (status)
927 return -EIO;
928
929 return 0;
930 }
931
932 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
933 u8 key_index, bool pairwise,
934 const u8 *mac_addr)
935 {
936 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
937
938 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
939
940 if (!ath6kl_cfg80211_ready(ar))
941 return -EIO;
942
943 if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) {
944 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
945 "%s: key index %d out of bounds\n", __func__,
946 key_index);
947 return -ENOENT;
948 }
949
950 if (!ar->keys[key_index].key_len) {
951 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
952 "%s: index %d is empty\n", __func__, key_index);
953 return 0;
954 }
955
956 ar->keys[key_index].key_len = 0;
957
958 return ath6kl_wmi_deletekey_cmd(ar->wmi, key_index);
959 }
960
961 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
962 u8 key_index, bool pairwise,
963 const u8 *mac_addr, void *cookie,
964 void (*callback) (void *cookie,
965 struct key_params *))
966 {
967 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
968 struct ath6kl_key *key = NULL;
969 struct key_params params;
970
971 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
972
973 if (!ath6kl_cfg80211_ready(ar))
974 return -EIO;
975
976 if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) {
977 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
978 "%s: key index %d out of bounds\n", __func__,
979 key_index);
980 return -ENOENT;
981 }
982
983 key = &ar->keys[key_index];
984 memset(&params, 0, sizeof(params));
985 params.cipher = key->cipher;
986 params.key_len = key->key_len;
987 params.seq_len = key->seq_len;
988 params.seq = key->seq;
989 params.key = key->key;
990
991 callback(cookie, &params);
992
993 return key->key_len ? 0 : -ENOENT;
994 }
995
996 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
997 struct net_device *ndev,
998 u8 key_index, bool unicast,
999 bool multicast)
1000 {
1001 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
1002 struct ath6kl_key *key = NULL;
1003 int status = 0;
1004 u8 key_usage;
1005
1006 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1007
1008 if (!ath6kl_cfg80211_ready(ar))
1009 return -EIO;
1010
1011 if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) {
1012 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1013 "%s: key index %d out of bounds\n",
1014 __func__, key_index);
1015 return -ENOENT;
1016 }
1017
1018 if (!ar->keys[key_index].key_len) {
1019 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1020 __func__, key_index);
1021 return -EINVAL;
1022 }
1023
1024 ar->def_txkey_index = key_index;
1025 key = &ar->keys[ar->def_txkey_index];
1026 key_usage = GROUP_USAGE;
1027 if (ar->prwise_crypto == WEP_CRYPT)
1028 key_usage |= TX_USAGE;
1029
1030 status = ath6kl_wmi_addkey_cmd(ar->wmi, ar->def_txkey_index,
1031 ar->prwise_crypto, key_usage,
1032 key->key_len, key->seq, key->key,
1033 KEY_OP_INIT_VAL, NULL,
1034 SYNC_BOTH_WMIFLAG);
1035 if (status)
1036 return -EIO;
1037
1038 return 0;
1039 }
1040
1041 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl *ar, u8 keyid,
1042 bool ismcast)
1043 {
1044 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1045 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1046
1047 cfg80211_michael_mic_failure(ar->net_dev, ar->bssid,
1048 (ismcast ? NL80211_KEYTYPE_GROUP :
1049 NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1050 GFP_KERNEL);
1051 }
1052
1053 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1054 {
1055 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1056 int ret;
1057
1058 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1059 changed);
1060
1061 if (!ath6kl_cfg80211_ready(ar))
1062 return -EIO;
1063
1064 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1065 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1066 if (ret != 0) {
1067 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1068 return -EIO;
1069 }
1070 }
1071
1072 return 0;
1073 }
1074
1075 /*
1076 * The type nl80211_tx_power_setting replaces the following
1077 * data type from 2.6.36 onwards
1078 */
1079 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1080 enum nl80211_tx_power_setting type,
1081 int dbm)
1082 {
1083 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1084 u8 ath6kl_dbm;
1085
1086 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1087 type, dbm);
1088
1089 if (!ath6kl_cfg80211_ready(ar))
1090 return -EIO;
1091
1092 switch (type) {
1093 case NL80211_TX_POWER_AUTOMATIC:
1094 return 0;
1095 case NL80211_TX_POWER_LIMITED:
1096 ar->tx_pwr = ath6kl_dbm = dbm;
1097 break;
1098 default:
1099 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1100 __func__, type);
1101 return -EOPNOTSUPP;
1102 }
1103
1104 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, ath6kl_dbm);
1105
1106 return 0;
1107 }
1108
1109 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, int *dbm)
1110 {
1111 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1112
1113 if (!ath6kl_cfg80211_ready(ar))
1114 return -EIO;
1115
1116 if (test_bit(CONNECTED, &ar->flag)) {
1117 ar->tx_pwr = 0;
1118
1119 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi) != 0) {
1120 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1121 return -EIO;
1122 }
1123
1124 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1125 5 * HZ);
1126
1127 if (signal_pending(current)) {
1128 ath6kl_err("target did not respond\n");
1129 return -EINTR;
1130 }
1131 }
1132
1133 *dbm = ar->tx_pwr;
1134 return 0;
1135 }
1136
1137 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1138 struct net_device *dev,
1139 bool pmgmt, int timeout)
1140 {
1141 struct ath6kl *ar = ath6kl_priv(dev);
1142 struct wmi_power_mode_cmd mode;
1143
1144 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1145 __func__, pmgmt, timeout);
1146
1147 if (!ath6kl_cfg80211_ready(ar))
1148 return -EIO;
1149
1150 if (pmgmt) {
1151 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1152 mode.pwr_mode = REC_POWER;
1153 } else {
1154 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1155 mode.pwr_mode = MAX_PERF_POWER;
1156 }
1157
1158 if (ath6kl_wmi_powermode_cmd(ar->wmi, mode.pwr_mode) != 0) {
1159 ath6kl_err("wmi_powermode_cmd failed\n");
1160 return -EIO;
1161 }
1162
1163 return 0;
1164 }
1165
1166 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1167 struct net_device *ndev,
1168 enum nl80211_iftype type, u32 *flags,
1169 struct vif_params *params)
1170 {
1171 struct ath6kl *ar = ath6kl_priv(ndev);
1172 struct wireless_dev *wdev = ar->wdev;
1173
1174 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1175
1176 if (!ath6kl_cfg80211_ready(ar))
1177 return -EIO;
1178
1179 switch (type) {
1180 case NL80211_IFTYPE_STATION:
1181 ar->next_mode = INFRA_NETWORK;
1182 break;
1183 case NL80211_IFTYPE_ADHOC:
1184 ar->next_mode = ADHOC_NETWORK;
1185 break;
1186 default:
1187 ath6kl_err("invalid interface type %u\n", type);
1188 return -EOPNOTSUPP;
1189 }
1190
1191 wdev->iftype = type;
1192
1193 return 0;
1194 }
1195
1196 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1197 struct net_device *dev,
1198 struct cfg80211_ibss_params *ibss_param)
1199 {
1200 struct ath6kl *ar = ath6kl_priv(dev);
1201 int status;
1202
1203 if (!ath6kl_cfg80211_ready(ar))
1204 return -EIO;
1205
1206 ar->ssid_len = ibss_param->ssid_len;
1207 memcpy(ar->ssid, ibss_param->ssid, ar->ssid_len);
1208
1209 if (ibss_param->channel)
1210 ar->ch_hint = ibss_param->channel->center_freq;
1211
1212 if (ibss_param->channel_fixed) {
1213 /*
1214 * TODO: channel_fixed: The channel should be fixed, do not
1215 * search for IBSSs to join on other channels. Target
1216 * firmware does not support this feature, needs to be
1217 * updated.
1218 */
1219 return -EOPNOTSUPP;
1220 }
1221
1222 memset(ar->req_bssid, 0, sizeof(ar->req_bssid));
1223 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1224 memcpy(ar->req_bssid, ibss_param->bssid, sizeof(ar->req_bssid));
1225
1226 ath6kl_set_wpa_version(ar, 0);
1227
1228 status = ath6kl_set_auth_type(ar, NL80211_AUTHTYPE_OPEN_SYSTEM);
1229 if (status)
1230 return status;
1231
1232 if (ibss_param->privacy) {
1233 ath6kl_set_cipher(ar, WLAN_CIPHER_SUITE_WEP40, true);
1234 ath6kl_set_cipher(ar, WLAN_CIPHER_SUITE_WEP40, false);
1235 } else {
1236 ath6kl_set_cipher(ar, 0, true);
1237 ath6kl_set_cipher(ar, 0, false);
1238 }
1239
1240 ar->nw_type = ar->next_mode;
1241
1242 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1243 "%s: connect called with authmode %d dot11 auth %d"
1244 " PW crypto %d PW crypto len %d GRP crypto %d"
1245 " GRP crypto len %d channel hint %u\n",
1246 __func__,
1247 ar->auth_mode, ar->dot11_auth_mode, ar->prwise_crypto,
1248 ar->prwise_crypto_len, ar->grp_crypto,
1249 ar->grp_crpto_len, ar->ch_hint);
1250
1251 status = ath6kl_wmi_connect_cmd(ar->wmi, ar->nw_type,
1252 ar->dot11_auth_mode, ar->auth_mode,
1253 ar->prwise_crypto,
1254 ar->prwise_crypto_len,
1255 ar->grp_crypto, ar->grp_crpto_len,
1256 ar->ssid_len, ar->ssid,
1257 ar->req_bssid, ar->ch_hint,
1258 ar->connect_ctrl_flags);
1259 set_bit(CONNECT_PEND, &ar->flag);
1260
1261 return 0;
1262 }
1263
1264 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1265 struct net_device *dev)
1266 {
1267 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(dev);
1268
1269 if (!ath6kl_cfg80211_ready(ar))
1270 return -EIO;
1271
1272 ath6kl_disconnect(ar);
1273 memset(ar->ssid, 0, sizeof(ar->ssid));
1274 ar->ssid_len = 0;
1275
1276 return 0;
1277 }
1278
1279 static const u32 cipher_suites[] = {
1280 WLAN_CIPHER_SUITE_WEP40,
1281 WLAN_CIPHER_SUITE_WEP104,
1282 WLAN_CIPHER_SUITE_TKIP,
1283 WLAN_CIPHER_SUITE_CCMP,
1284 };
1285
1286 static bool is_rate_legacy(s32 rate)
1287 {
1288 static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1289 6000, 9000, 12000, 18000, 24000,
1290 36000, 48000, 54000
1291 };
1292 u8 i;
1293
1294 for (i = 0; i < ARRAY_SIZE(legacy); i++)
1295 if (rate == legacy[i])
1296 return true;
1297
1298 return false;
1299 }
1300
1301 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1302 {
1303 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1304 52000, 58500, 65000, 72200
1305 };
1306 u8 i;
1307
1308 for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1309 if (rate == ht20[i]) {
1310 if (i == ARRAY_SIZE(ht20) - 1)
1311 /* last rate uses sgi */
1312 *sgi = true;
1313 else
1314 *sgi = false;
1315
1316 *mcs = i;
1317 return true;
1318 }
1319 }
1320 return false;
1321 }
1322
1323 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1324 {
1325 static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1326 81000, 108000, 121500, 135000,
1327 150000
1328 };
1329 u8 i;
1330
1331 for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1332 if (rate == ht40[i]) {
1333 if (i == ARRAY_SIZE(ht40) - 1)
1334 /* last rate uses sgi */
1335 *sgi = true;
1336 else
1337 *sgi = false;
1338
1339 *mcs = i;
1340 return true;
1341 }
1342 }
1343
1344 return false;
1345 }
1346
1347 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1348 u8 *mac, struct station_info *sinfo)
1349 {
1350 struct ath6kl *ar = ath6kl_priv(dev);
1351 long left;
1352 bool sgi;
1353 s32 rate;
1354 int ret;
1355 u8 mcs;
1356
1357 if (memcmp(mac, ar->bssid, ETH_ALEN) != 0)
1358 return -ENOENT;
1359
1360 if (down_interruptible(&ar->sem))
1361 return -EBUSY;
1362
1363 set_bit(STATS_UPDATE_PEND, &ar->flag);
1364
1365 ret = ath6kl_wmi_get_stats_cmd(ar->wmi);
1366
1367 if (ret != 0) {
1368 up(&ar->sem);
1369 return -EIO;
1370 }
1371
1372 left = wait_event_interruptible_timeout(ar->event_wq,
1373 !test_bit(STATS_UPDATE_PEND,
1374 &ar->flag),
1375 WMI_TIMEOUT);
1376
1377 up(&ar->sem);
1378
1379 if (left == 0)
1380 return -ETIMEDOUT;
1381 else if (left < 0)
1382 return left;
1383
1384 if (ar->target_stats.rx_byte) {
1385 sinfo->rx_bytes = ar->target_stats.rx_byte;
1386 sinfo->filled |= STATION_INFO_RX_BYTES;
1387 sinfo->rx_packets = ar->target_stats.rx_pkt;
1388 sinfo->filled |= STATION_INFO_RX_PACKETS;
1389 }
1390
1391 if (ar->target_stats.tx_byte) {
1392 sinfo->tx_bytes = ar->target_stats.tx_byte;
1393 sinfo->filled |= STATION_INFO_TX_BYTES;
1394 sinfo->tx_packets = ar->target_stats.tx_pkt;
1395 sinfo->filled |= STATION_INFO_TX_PACKETS;
1396 }
1397
1398 sinfo->signal = ar->target_stats.cs_rssi;
1399 sinfo->filled |= STATION_INFO_SIGNAL;
1400
1401 rate = ar->target_stats.tx_ucast_rate;
1402
1403 if (is_rate_legacy(rate)) {
1404 sinfo->txrate.legacy = rate / 100;
1405 } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1406 if (sgi) {
1407 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1408 sinfo->txrate.mcs = mcs - 1;
1409 } else {
1410 sinfo->txrate.mcs = mcs;
1411 }
1412
1413 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1414 } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1415 if (sgi) {
1416 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1417 sinfo->txrate.mcs = mcs - 1;
1418 } else {
1419 sinfo->txrate.mcs = mcs;
1420 }
1421
1422 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
1423 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1424 } else {
1425 ath6kl_warn("invalid rate: %d\n", rate);
1426 return 0;
1427 }
1428
1429 sinfo->filled |= STATION_INFO_TX_BITRATE;
1430
1431 return 0;
1432 }
1433
1434 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1435 struct cfg80211_pmksa *pmksa)
1436 {
1437 struct ath6kl *ar = ath6kl_priv(netdev);
1438 return ath6kl_wmi_setpmkid_cmd(ar->wmi, pmksa->bssid,
1439 pmksa->pmkid, true);
1440 }
1441
1442 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1443 struct cfg80211_pmksa *pmksa)
1444 {
1445 struct ath6kl *ar = ath6kl_priv(netdev);
1446 return ath6kl_wmi_setpmkid_cmd(ar->wmi, pmksa->bssid,
1447 pmksa->pmkid, false);
1448 }
1449
1450 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1451 {
1452 struct ath6kl *ar = ath6kl_priv(netdev);
1453 if (test_bit(CONNECTED, &ar->flag))
1454 return ath6kl_wmi_setpmkid_cmd(ar->wmi, ar->bssid, NULL, false);
1455 return 0;
1456 }
1457
1458 static struct cfg80211_ops ath6kl_cfg80211_ops = {
1459 .change_virtual_intf = ath6kl_cfg80211_change_iface,
1460 .scan = ath6kl_cfg80211_scan,
1461 .connect = ath6kl_cfg80211_connect,
1462 .disconnect = ath6kl_cfg80211_disconnect,
1463 .add_key = ath6kl_cfg80211_add_key,
1464 .get_key = ath6kl_cfg80211_get_key,
1465 .del_key = ath6kl_cfg80211_del_key,
1466 .set_default_key = ath6kl_cfg80211_set_default_key,
1467 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
1468 .set_tx_power = ath6kl_cfg80211_set_txpower,
1469 .get_tx_power = ath6kl_cfg80211_get_txpower,
1470 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
1471 .join_ibss = ath6kl_cfg80211_join_ibss,
1472 .leave_ibss = ath6kl_cfg80211_leave_ibss,
1473 .get_station = ath6kl_get_station,
1474 .set_pmksa = ath6kl_set_pmksa,
1475 .del_pmksa = ath6kl_del_pmksa,
1476 .flush_pmksa = ath6kl_flush_pmksa,
1477 };
1478
1479 struct wireless_dev *ath6kl_cfg80211_init(struct device *dev)
1480 {
1481 int ret = 0;
1482 struct wireless_dev *wdev;
1483
1484 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1485 if (!wdev) {
1486 ath6kl_err("couldn't allocate wireless device\n");
1487 return NULL;
1488 }
1489
1490 /* create a new wiphy for use with cfg80211 */
1491 wdev->wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
1492 if (!wdev->wiphy) {
1493 ath6kl_err("couldn't allocate wiphy device\n");
1494 kfree(wdev);
1495 return NULL;
1496 }
1497
1498 /* set device pointer for wiphy */
1499 set_wiphy_dev(wdev->wiphy, dev);
1500
1501 wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1502 BIT(NL80211_IFTYPE_ADHOC);
1503 /* max num of ssids that can be probed during scanning */
1504 wdev->wiphy->max_scan_ssids = MAX_PROBED_SSID_INDEX;
1505 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
1506 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz;
1507 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1508
1509 wdev->wiphy->cipher_suites = cipher_suites;
1510 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1511
1512 ret = wiphy_register(wdev->wiphy);
1513 if (ret < 0) {
1514 ath6kl_err("couldn't register wiphy device\n");
1515 wiphy_free(wdev->wiphy);
1516 kfree(wdev);
1517 return NULL;
1518 }
1519
1520 return wdev;
1521 }
1522
1523 void ath6kl_cfg80211_deinit(struct ath6kl *ar)
1524 {
1525 struct wireless_dev *wdev = ar->wdev;
1526
1527 if (ar->scan_req) {
1528 cfg80211_scan_done(ar->scan_req, true);
1529 ar->scan_req = NULL;
1530 }
1531
1532 if (!wdev)
1533 return;
1534
1535 wiphy_unregister(wdev->wiphy);
1536 wiphy_free(wdev->wiphy);
1537 kfree(wdev);
1538 }
Linux kernel - Deliverables
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