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ath6kl: fix atomicity in ath6kl_cfg80211_scan_node()
[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 (!test_bit(CONNECTED, &ar->flag)) {
563 /* inform connect result to cfg80211 */
564 ar->sme_state = SME_DISCONNECTED;
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 {
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 static void ath6kl_cfg80211_scan_node(void *arg, struct bss *ni)
725 {
726 struct wiphy *wiphy = (struct wiphy *)arg;
727 u16 size;
728 unsigned char *ieeemgmtbuf = NULL;
729 struct ieee80211_mgmt *mgmt;
730 struct ieee80211_channel *channel;
731 struct ieee80211_supported_band *band;
732 struct ath6kl_common_ie *cie;
733 s32 signal;
734 int freq;
735
736 cie = &ni->ni_cie;
737
738 if (is_ch_11a(cie->ie_chan))
739 band = wiphy->bands[IEEE80211_BAND_5GHZ]; /* 11a */
740 else if ((cie->ie_erp) || (cie->ie_xrates))
741 band = wiphy->bands[IEEE80211_BAND_2GHZ]; /* 11g */
742 else
743 band = wiphy->bands[IEEE80211_BAND_2GHZ]; /* 11b */
744
745 size = ni->ni_framelen + offsetof(struct ieee80211_mgmt, u);
746 ieeemgmtbuf = kmalloc(size, GFP_ATOMIC);
747 if (!ieeemgmtbuf) {
748 ath6kl_err("ieee mgmt buf alloc error\n");
749 return;
750 }
751
752 /*
753 * TODO: Update target to include 802.11 mac header while sending
754 * bss info. Target removes 802.11 mac header while sending the bss
755 * info to host, cfg80211 needs it, for time being just filling the
756 * da, sa and bssid fields alone.
757 */
758 mgmt = (struct ieee80211_mgmt *)ieeemgmtbuf;
759 memset(mgmt->da, 0xff, ETH_ALEN); /*broadcast addr */
760 memcpy(mgmt->sa, ni->ni_macaddr, ETH_ALEN);
761 memcpy(mgmt->bssid, ni->ni_macaddr, ETH_ALEN);
762 memcpy(ieeemgmtbuf + offsetof(struct ieee80211_mgmt, u),
763 ni->ni_buf, ni->ni_framelen);
764
765 freq = cie->ie_chan;
766 channel = ieee80211_get_channel(wiphy, freq);
767 signal = ni->ni_snr * 100;
768
769 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
770 "%s: bssid %pM ch %d freq %d size %d\n", __func__,
771 mgmt->bssid, channel->hw_value, freq, size);
772 cfg80211_inform_bss_frame(wiphy, channel, mgmt,
773 size, signal, GFP_ATOMIC);
774
775 kfree(ieeemgmtbuf);
776 }
777
778 static int ath6kl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
779 struct cfg80211_scan_request *request)
780 {
781 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
782 int ret = 0;
783
784 if (!ath6kl_cfg80211_ready(ar))
785 return -EIO;
786
787 if (!ar->usr_bss_filter) {
788 if (ath6kl_wmi_bssfilter_cmd(ar->wmi,
789 (test_bit(CONNECTED, &ar->flag) ?
790 ALL_BUT_BSS_FILTER :
791 ALL_BSS_FILTER), 0) != 0) {
792 ath6kl_err("couldn't set bss filtering\n");
793 return -EIO;
794 }
795 }
796
797 if (request->n_ssids && request->ssids[0].ssid_len) {
798 u8 i;
799
800 if (request->n_ssids > (MAX_PROBED_SSID_INDEX - 1))
801 request->n_ssids = MAX_PROBED_SSID_INDEX - 1;
802
803 for (i = 0; i < request->n_ssids; i++)
804 ath6kl_wmi_probedssid_cmd(ar->wmi, i + 1,
805 SPECIFIC_SSID_FLAG,
806 request->ssids[i].ssid_len,
807 request->ssids[i].ssid);
808 }
809
810 if (ath6kl_wmi_startscan_cmd(ar->wmi, WMI_LONG_SCAN, 0,
811 false, 0, 0, 0, NULL) != 0) {
812 ath6kl_err("wmi_startscan_cmd failed\n");
813 ret = -EIO;
814 }
815
816 ar->scan_req = request;
817
818 return ret;
819 }
820
821 void ath6kl_cfg80211_scan_complete_event(struct ath6kl *ar, int status)
822 {
823
824 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status %d\n", __func__, status);
825
826 if (ar->scan_req) {
827 /* Translate data to cfg80211 mgmt format */
828 ath6kl_wmi_iterate_nodes(ar->wmi, ath6kl_cfg80211_scan_node,
829 ar->wdev->wiphy);
830
831 cfg80211_scan_done(ar->scan_req, ((status & -ECANCELED)
832 || (status & -EBUSY)) ? true :
833 false);
834
835 if (ar->scan_req->n_ssids && ar->scan_req->ssids[0].ssid_len) {
836 u8 i;
837
838 for (i = 0; i < ar->scan_req->n_ssids; i++) {
839 ath6kl_wmi_probedssid_cmd(ar->wmi, i + 1,
840 DISABLE_SSID_FLAG,
841 0, NULL);
842 }
843 }
844 ar->scan_req = NULL;
845 }
846 }
847
848 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
849 u8 key_index, bool pairwise,
850 const u8 *mac_addr,
851 struct key_params *params)
852 {
853 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
854 struct ath6kl_key *key = NULL;
855 u8 key_usage;
856 u8 key_type;
857 int status = 0;
858
859 if (!ath6kl_cfg80211_ready(ar))
860 return -EIO;
861
862 if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) {
863 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
864 "%s: key index %d out of bounds\n", __func__,
865 key_index);
866 return -ENOENT;
867 }
868
869 key = &ar->keys[key_index];
870 memset(key, 0, sizeof(struct ath6kl_key));
871
872 if (pairwise)
873 key_usage = PAIRWISE_USAGE;
874 else
875 key_usage = GROUP_USAGE;
876
877 if (params) {
878 if (params->key_len > WLAN_MAX_KEY_LEN ||
879 params->seq_len > sizeof(key->seq))
880 return -EINVAL;
881
882 key->key_len = params->key_len;
883 memcpy(key->key, params->key, key->key_len);
884 key->seq_len = params->seq_len;
885 memcpy(key->seq, params->seq, key->seq_len);
886 key->cipher = params->cipher;
887 }
888
889 switch (key->cipher) {
890 case WLAN_CIPHER_SUITE_WEP40:
891 case WLAN_CIPHER_SUITE_WEP104:
892 key_type = WEP_CRYPT;
893 break;
894
895 case WLAN_CIPHER_SUITE_TKIP:
896 key_type = TKIP_CRYPT;
897 break;
898
899 case WLAN_CIPHER_SUITE_CCMP:
900 key_type = AES_CRYPT;
901 break;
902
903 default:
904 return -ENOTSUPP;
905 }
906
907 if (((ar->auth_mode == WPA_PSK_AUTH)
908 || (ar->auth_mode == WPA2_PSK_AUTH))
909 && (key_usage & GROUP_USAGE))
910 del_timer(&ar->disconnect_timer);
911
912 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
913 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
914 __func__, key_index, key->key_len, key_type,
915 key_usage, key->seq_len);
916
917 ar->def_txkey_index = key_index;
918 status = ath6kl_wmi_addkey_cmd(ar->wmi, ar->def_txkey_index,
919 key_type, key_usage, key->key_len,
920 key->seq, key->key, KEY_OP_INIT_VAL,
921 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
922
923 if (status)
924 return -EIO;
925
926 return 0;
927 }
928
929 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
930 u8 key_index, bool pairwise,
931 const u8 *mac_addr)
932 {
933 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
934
935 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
936
937 if (!ath6kl_cfg80211_ready(ar))
938 return -EIO;
939
940 if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) {
941 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
942 "%s: key index %d out of bounds\n", __func__,
943 key_index);
944 return -ENOENT;
945 }
946
947 if (!ar->keys[key_index].key_len) {
948 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
949 "%s: index %d is empty\n", __func__, key_index);
950 return 0;
951 }
952
953 ar->keys[key_index].key_len = 0;
954
955 return ath6kl_wmi_deletekey_cmd(ar->wmi, key_index);
956 }
957
958 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
959 u8 key_index, bool pairwise,
960 const u8 *mac_addr, void *cookie,
961 void (*callback) (void *cookie,
962 struct key_params *))
963 {
964 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
965 struct ath6kl_key *key = NULL;
966 struct key_params params;
967
968 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
969
970 if (!ath6kl_cfg80211_ready(ar))
971 return -EIO;
972
973 if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) {
974 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
975 "%s: key index %d out of bounds\n", __func__,
976 key_index);
977 return -ENOENT;
978 }
979
980 key = &ar->keys[key_index];
981 memset(&params, 0, sizeof(params));
982 params.cipher = key->cipher;
983 params.key_len = key->key_len;
984 params.seq_len = key->seq_len;
985 params.seq = key->seq;
986 params.key = key->key;
987
988 callback(cookie, &params);
989
990 return key->key_len ? 0 : -ENOENT;
991 }
992
993 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
994 struct net_device *ndev,
995 u8 key_index, bool unicast,
996 bool multicast)
997 {
998 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(ndev);
999 struct ath6kl_key *key = NULL;
1000 int status = 0;
1001 u8 key_usage;
1002
1003 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1004
1005 if (!ath6kl_cfg80211_ready(ar))
1006 return -EIO;
1007
1008 if (key_index < WMI_MIN_KEY_INDEX || key_index > WMI_MAX_KEY_INDEX) {
1009 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1010 "%s: key index %d out of bounds\n",
1011 __func__, key_index);
1012 return -ENOENT;
1013 }
1014
1015 if (!ar->keys[key_index].key_len) {
1016 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1017 __func__, key_index);
1018 return -EINVAL;
1019 }
1020
1021 ar->def_txkey_index = key_index;
1022 key = &ar->keys[ar->def_txkey_index];
1023 key_usage = GROUP_USAGE;
1024 if (ar->prwise_crypto == WEP_CRYPT)
1025 key_usage |= TX_USAGE;
1026
1027 status = ath6kl_wmi_addkey_cmd(ar->wmi, ar->def_txkey_index,
1028 ar->prwise_crypto, key_usage,
1029 key->key_len, key->seq, key->key,
1030 KEY_OP_INIT_VAL, NULL,
1031 SYNC_BOTH_WMIFLAG);
1032 if (status)
1033 return -EIO;
1034
1035 return 0;
1036 }
1037
1038 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl *ar, u8 keyid,
1039 bool ismcast)
1040 {
1041 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1042 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1043
1044 cfg80211_michael_mic_failure(ar->net_dev, ar->bssid,
1045 (ismcast ? NL80211_KEYTYPE_GROUP :
1046 NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1047 GFP_KERNEL);
1048 }
1049
1050 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1051 {
1052 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1053 int ret;
1054
1055 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1056 changed);
1057
1058 if (!ath6kl_cfg80211_ready(ar))
1059 return -EIO;
1060
1061 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1062 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1063 if (ret != 0) {
1064 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1065 return -EIO;
1066 }
1067 }
1068
1069 return 0;
1070 }
1071
1072 /*
1073 * The type nl80211_tx_power_setting replaces the following
1074 * data type from 2.6.36 onwards
1075 */
1076 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1077 enum nl80211_tx_power_setting type,
1078 int dbm)
1079 {
1080 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1081 u8 ath6kl_dbm;
1082
1083 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1084 type, dbm);
1085
1086 if (!ath6kl_cfg80211_ready(ar))
1087 return -EIO;
1088
1089 switch (type) {
1090 case NL80211_TX_POWER_AUTOMATIC:
1091 return 0;
1092 case NL80211_TX_POWER_LIMITED:
1093 ar->tx_pwr = ath6kl_dbm = dbm;
1094 break;
1095 default:
1096 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1097 __func__, type);
1098 return -EOPNOTSUPP;
1099 }
1100
1101 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, ath6kl_dbm);
1102
1103 return 0;
1104 }
1105
1106 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, int *dbm)
1107 {
1108 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1109
1110 if (!ath6kl_cfg80211_ready(ar))
1111 return -EIO;
1112
1113 if (test_bit(CONNECTED, &ar->flag)) {
1114 ar->tx_pwr = 0;
1115
1116 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi) != 0) {
1117 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1118 return -EIO;
1119 }
1120
1121 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1122 5 * HZ);
1123
1124 if (signal_pending(current)) {
1125 ath6kl_err("target did not respond\n");
1126 return -EINTR;
1127 }
1128 }
1129
1130 *dbm = ar->tx_pwr;
1131 return 0;
1132 }
1133
1134 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1135 struct net_device *dev,
1136 bool pmgmt, int timeout)
1137 {
1138 struct ath6kl *ar = ath6kl_priv(dev);
1139 struct wmi_power_mode_cmd mode;
1140
1141 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1142 __func__, pmgmt, timeout);
1143
1144 if (!ath6kl_cfg80211_ready(ar))
1145 return -EIO;
1146
1147 if (pmgmt) {
1148 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1149 mode.pwr_mode = REC_POWER;
1150 } else {
1151 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1152 mode.pwr_mode = MAX_PERF_POWER;
1153 }
1154
1155 if (ath6kl_wmi_powermode_cmd(ar->wmi, mode.pwr_mode) != 0) {
1156 ath6kl_err("wmi_powermode_cmd failed\n");
1157 return -EIO;
1158 }
1159
1160 return 0;
1161 }
1162
1163 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1164 struct net_device *ndev,
1165 enum nl80211_iftype type, u32 *flags,
1166 struct vif_params *params)
1167 {
1168 struct ath6kl *ar = ath6kl_priv(ndev);
1169 struct wireless_dev *wdev = ar->wdev;
1170
1171 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1172
1173 if (!ath6kl_cfg80211_ready(ar))
1174 return -EIO;
1175
1176 switch (type) {
1177 case NL80211_IFTYPE_STATION:
1178 ar->next_mode = INFRA_NETWORK;
1179 break;
1180 case NL80211_IFTYPE_ADHOC:
1181 ar->next_mode = ADHOC_NETWORK;
1182 break;
1183 default:
1184 ath6kl_err("invalid interface type %u\n", type);
1185 return -EOPNOTSUPP;
1186 }
1187
1188 wdev->iftype = type;
1189
1190 return 0;
1191 }
1192
1193 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1194 struct net_device *dev,
1195 struct cfg80211_ibss_params *ibss_param)
1196 {
1197 struct ath6kl *ar = ath6kl_priv(dev);
1198 int status;
1199
1200 if (!ath6kl_cfg80211_ready(ar))
1201 return -EIO;
1202
1203 ar->ssid_len = ibss_param->ssid_len;
1204 memcpy(ar->ssid, ibss_param->ssid, ar->ssid_len);
1205
1206 if (ibss_param->channel)
1207 ar->ch_hint = ibss_param->channel->center_freq;
1208
1209 if (ibss_param->channel_fixed) {
1210 /*
1211 * TODO: channel_fixed: The channel should be fixed, do not
1212 * search for IBSSs to join on other channels. Target
1213 * firmware does not support this feature, needs to be
1214 * updated.
1215 */
1216 return -EOPNOTSUPP;
1217 }
1218
1219 memset(ar->req_bssid, 0, sizeof(ar->req_bssid));
1220 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1221 memcpy(ar->req_bssid, ibss_param->bssid, sizeof(ar->req_bssid));
1222
1223 ath6kl_set_wpa_version(ar, 0);
1224
1225 status = ath6kl_set_auth_type(ar, NL80211_AUTHTYPE_OPEN_SYSTEM);
1226 if (status)
1227 return status;
1228
1229 if (ibss_param->privacy) {
1230 ath6kl_set_cipher(ar, WLAN_CIPHER_SUITE_WEP40, true);
1231 ath6kl_set_cipher(ar, WLAN_CIPHER_SUITE_WEP40, false);
1232 } else {
1233 ath6kl_set_cipher(ar, 0, true);
1234 ath6kl_set_cipher(ar, 0, false);
1235 }
1236
1237 ar->nw_type = ar->next_mode;
1238
1239 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1240 "%s: connect called with authmode %d dot11 auth %d"
1241 " PW crypto %d PW crypto len %d GRP crypto %d"
1242 " GRP crypto len %d channel hint %u\n",
1243 __func__,
1244 ar->auth_mode, ar->dot11_auth_mode, ar->prwise_crypto,
1245 ar->prwise_crypto_len, ar->grp_crypto,
1246 ar->grp_crpto_len, ar->ch_hint);
1247
1248 status = ath6kl_wmi_connect_cmd(ar->wmi, ar->nw_type,
1249 ar->dot11_auth_mode, ar->auth_mode,
1250 ar->prwise_crypto,
1251 ar->prwise_crypto_len,
1252 ar->grp_crypto, ar->grp_crpto_len,
1253 ar->ssid_len, ar->ssid,
1254 ar->req_bssid, ar->ch_hint,
1255 ar->connect_ctrl_flags);
1256 set_bit(CONNECT_PEND, &ar->flag);
1257
1258 return 0;
1259 }
1260
1261 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1262 struct net_device *dev)
1263 {
1264 struct ath6kl *ar = (struct ath6kl *)ath6kl_priv(dev);
1265
1266 if (!ath6kl_cfg80211_ready(ar))
1267 return -EIO;
1268
1269 ath6kl_disconnect(ar);
1270 memset(ar->ssid, 0, sizeof(ar->ssid));
1271 ar->ssid_len = 0;
1272
1273 return 0;
1274 }
1275
1276 static const u32 cipher_suites[] = {
1277 WLAN_CIPHER_SUITE_WEP40,
1278 WLAN_CIPHER_SUITE_WEP104,
1279 WLAN_CIPHER_SUITE_TKIP,
1280 WLAN_CIPHER_SUITE_CCMP,
1281 };
1282
1283 static bool is_rate_legacy(s32 rate)
1284 {
1285 static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1286 6000, 9000, 12000, 18000, 24000,
1287 36000, 48000, 54000
1288 };
1289 u8 i;
1290
1291 for (i = 0; i < ARRAY_SIZE(legacy); i++)
1292 if (rate == legacy[i])
1293 return true;
1294
1295 return false;
1296 }
1297
1298 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1299 {
1300 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1301 52000, 58500, 65000, 72200
1302 };
1303 u8 i;
1304
1305 for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1306 if (rate == ht20[i]) {
1307 if (i == ARRAY_SIZE(ht20) - 1)
1308 /* last rate uses sgi */
1309 *sgi = true;
1310 else
1311 *sgi = false;
1312
1313 *mcs = i;
1314 return true;
1315 }
1316 }
1317 return false;
1318 }
1319
1320 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1321 {
1322 static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1323 81000, 108000, 121500, 135000,
1324 150000
1325 };
1326 u8 i;
1327
1328 for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1329 if (rate == ht40[i]) {
1330 if (i == ARRAY_SIZE(ht40) - 1)
1331 /* last rate uses sgi */
1332 *sgi = true;
1333 else
1334 *sgi = false;
1335
1336 *mcs = i;
1337 return true;
1338 }
1339 }
1340
1341 return false;
1342 }
1343
1344 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1345 u8 *mac, struct station_info *sinfo)
1346 {
1347 struct ath6kl *ar = ath6kl_priv(dev);
1348 long left;
1349 bool sgi;
1350 s32 rate;
1351 int ret;
1352 u8 mcs;
1353
1354 if (memcmp(mac, ar->bssid, ETH_ALEN) != 0)
1355 return -ENOENT;
1356
1357 if (down_interruptible(&ar->sem))
1358 return -EBUSY;
1359
1360 set_bit(STATS_UPDATE_PEND, &ar->flag);
1361
1362 ret = ath6kl_wmi_get_stats_cmd(ar->wmi);
1363
1364 if (ret != 0) {
1365 up(&ar->sem);
1366 return -EIO;
1367 }
1368
1369 left = wait_event_interruptible_timeout(ar->event_wq,
1370 !test_bit(STATS_UPDATE_PEND,
1371 &ar->flag),
1372 WMI_TIMEOUT);
1373
1374 up(&ar->sem);
1375
1376 if (left == 0)
1377 return -ETIMEDOUT;
1378 else if (left < 0)
1379 return left;
1380
1381 if (ar->target_stats.rx_byte) {
1382 sinfo->rx_bytes = ar->target_stats.rx_byte;
1383 sinfo->filled |= STATION_INFO_RX_BYTES;
1384 sinfo->rx_packets = ar->target_stats.rx_pkt;
1385 sinfo->filled |= STATION_INFO_RX_PACKETS;
1386 }
1387
1388 if (ar->target_stats.tx_byte) {
1389 sinfo->tx_bytes = ar->target_stats.tx_byte;
1390 sinfo->filled |= STATION_INFO_TX_BYTES;
1391 sinfo->tx_packets = ar->target_stats.tx_pkt;
1392 sinfo->filled |= STATION_INFO_TX_PACKETS;
1393 }
1394
1395 sinfo->signal = ar->target_stats.cs_rssi;
1396 sinfo->filled |= STATION_INFO_SIGNAL;
1397
1398 rate = ar->target_stats.tx_ucast_rate;
1399
1400 if (is_rate_legacy(rate)) {
1401 sinfo->txrate.legacy = rate / 100;
1402 } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1403 if (sgi) {
1404 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1405 sinfo->txrate.mcs = mcs - 1;
1406 } else {
1407 sinfo->txrate.mcs = mcs;
1408 }
1409
1410 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1411 } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1412 if (sgi) {
1413 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1414 sinfo->txrate.mcs = mcs - 1;
1415 } else {
1416 sinfo->txrate.mcs = mcs;
1417 }
1418
1419 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
1420 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1421 } else {
1422 ath6kl_warn("invalid rate: %d\n", rate);
1423 return 0;
1424 }
1425
1426 sinfo->filled |= STATION_INFO_TX_BITRATE;
1427
1428 return 0;
1429 }
1430
1431 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1432 struct cfg80211_pmksa *pmksa)
1433 {
1434 struct ath6kl *ar = ath6kl_priv(netdev);
1435 return ath6kl_wmi_setpmkid_cmd(ar->wmi, pmksa->bssid,
1436 pmksa->pmkid, true);
1437 }
1438
1439 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1440 struct cfg80211_pmksa *pmksa)
1441 {
1442 struct ath6kl *ar = ath6kl_priv(netdev);
1443 return ath6kl_wmi_setpmkid_cmd(ar->wmi, pmksa->bssid,
1444 pmksa->pmkid, false);
1445 }
1446
1447 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1448 {
1449 struct ath6kl *ar = ath6kl_priv(netdev);
1450 if (test_bit(CONNECTED, &ar->flag))
1451 return ath6kl_wmi_setpmkid_cmd(ar->wmi, ar->bssid, NULL, false);
1452 return 0;
1453 }
1454
1455 static struct cfg80211_ops ath6kl_cfg80211_ops = {
1456 .change_virtual_intf = ath6kl_cfg80211_change_iface,
1457 .scan = ath6kl_cfg80211_scan,
1458 .connect = ath6kl_cfg80211_connect,
1459 .disconnect = ath6kl_cfg80211_disconnect,
1460 .add_key = ath6kl_cfg80211_add_key,
1461 .get_key = ath6kl_cfg80211_get_key,
1462 .del_key = ath6kl_cfg80211_del_key,
1463 .set_default_key = ath6kl_cfg80211_set_default_key,
1464 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
1465 .set_tx_power = ath6kl_cfg80211_set_txpower,
1466 .get_tx_power = ath6kl_cfg80211_get_txpower,
1467 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
1468 .join_ibss = ath6kl_cfg80211_join_ibss,
1469 .leave_ibss = ath6kl_cfg80211_leave_ibss,
1470 .get_station = ath6kl_get_station,
1471 .set_pmksa = ath6kl_set_pmksa,
1472 .del_pmksa = ath6kl_del_pmksa,
1473 .flush_pmksa = ath6kl_flush_pmksa,
1474 };
1475
1476 struct wireless_dev *ath6kl_cfg80211_init(struct device *dev)
1477 {
1478 int ret = 0;
1479 struct wireless_dev *wdev;
1480
1481 wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
1482 if (!wdev) {
1483 ath6kl_err("couldn't allocate wireless device\n");
1484 return NULL;
1485 }
1486
1487 /* create a new wiphy for use with cfg80211 */
1488 wdev->wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
1489 if (!wdev->wiphy) {
1490 ath6kl_err("couldn't allocate wiphy device\n");
1491 kfree(wdev);
1492 return NULL;
1493 }
1494
1495 /* set device pointer for wiphy */
1496 set_wiphy_dev(wdev->wiphy, dev);
1497
1498 wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
1499 BIT(NL80211_IFTYPE_ADHOC);
1500 /* max num of ssids that can be probed during scanning */
1501 wdev->wiphy->max_scan_ssids = MAX_PROBED_SSID_INDEX;
1502 wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
1503 wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz;
1504 wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
1505
1506 wdev->wiphy->cipher_suites = cipher_suites;
1507 wdev->wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
1508
1509 ret = wiphy_register(wdev->wiphy);
1510 if (ret < 0) {
1511 ath6kl_err("couldn't register wiphy device\n");
1512 wiphy_free(wdev->wiphy);
1513 kfree(wdev);
1514 return NULL;
1515 }
1516
1517 return wdev;
1518 }
1519
1520 void ath6kl_cfg80211_deinit(struct ath6kl *ar)
1521 {
1522 struct wireless_dev *wdev = ar->wdev;
1523
1524 if (ar->scan_req) {
1525 cfg80211_scan_done(ar->scan_req, true);
1526 ar->scan_req = NULL;
1527 }
1528
1529 if (!wdev)
1530 return;
1531
1532 wiphy_unregister(wdev->wiphy);
1533 wiphy_free(wdev->wiphy);
1534 kfree(wdev);
1535 }
Linux kernel - Deliverables
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