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ath6kl: Use correct max-scan-SSIDs limit
[deliverable/linux.git] / drivers / net / wireless / ath / ath6kl / cfg80211.c
1 /*
2 * Copyright (c) 2004-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20 #include <linux/moduleparam.h>
21 #include <linux/inetdevice.h>
22 #include <linux/export.h>
23
24 #include "core.h"
25 #include "cfg80211.h"
26 #include "debug.h"
27 #include "hif-ops.h"
28 #include "testmode.h"
29
30 #define RATETAB_ENT(_rate, _rateid, _flags) { \
31 .bitrate = (_rate), \
32 .flags = (_flags), \
33 .hw_value = (_rateid), \
34 }
35
36 #define CHAN2G(_channel, _freq, _flags) { \
37 .band = IEEE80211_BAND_2GHZ, \
38 .hw_value = (_channel), \
39 .center_freq = (_freq), \
40 .flags = (_flags), \
41 .max_antenna_gain = 0, \
42 .max_power = 30, \
43 }
44
45 #define CHAN5G(_channel, _flags) { \
46 .band = IEEE80211_BAND_5GHZ, \
47 .hw_value = (_channel), \
48 .center_freq = 5000 + (5 * (_channel)), \
49 .flags = (_flags), \
50 .max_antenna_gain = 0, \
51 .max_power = 30, \
52 }
53
54 #define DEFAULT_BG_SCAN_PERIOD 60
55
56 static struct ieee80211_rate ath6kl_rates[] = {
57 RATETAB_ENT(10, 0x1, 0),
58 RATETAB_ENT(20, 0x2, 0),
59 RATETAB_ENT(55, 0x4, 0),
60 RATETAB_ENT(110, 0x8, 0),
61 RATETAB_ENT(60, 0x10, 0),
62 RATETAB_ENT(90, 0x20, 0),
63 RATETAB_ENT(120, 0x40, 0),
64 RATETAB_ENT(180, 0x80, 0),
65 RATETAB_ENT(240, 0x100, 0),
66 RATETAB_ENT(360, 0x200, 0),
67 RATETAB_ENT(480, 0x400, 0),
68 RATETAB_ENT(540, 0x800, 0),
69 };
70
71 #define ath6kl_a_rates (ath6kl_rates + 4)
72 #define ath6kl_a_rates_size 8
73 #define ath6kl_g_rates (ath6kl_rates + 0)
74 #define ath6kl_g_rates_size 12
75
76 #define ath6kl_g_htcap IEEE80211_HT_CAP_SGI_20
77 #define ath6kl_a_htcap (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \
78 IEEE80211_HT_CAP_SGI_20 | \
79 IEEE80211_HT_CAP_SGI_40)
80
81 static struct ieee80211_channel ath6kl_2ghz_channels[] = {
82 CHAN2G(1, 2412, 0),
83 CHAN2G(2, 2417, 0),
84 CHAN2G(3, 2422, 0),
85 CHAN2G(4, 2427, 0),
86 CHAN2G(5, 2432, 0),
87 CHAN2G(6, 2437, 0),
88 CHAN2G(7, 2442, 0),
89 CHAN2G(8, 2447, 0),
90 CHAN2G(9, 2452, 0),
91 CHAN2G(10, 2457, 0),
92 CHAN2G(11, 2462, 0),
93 CHAN2G(12, 2467, 0),
94 CHAN2G(13, 2472, 0),
95 CHAN2G(14, 2484, 0),
96 };
97
98 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = {
99 CHAN5G(34, 0), CHAN5G(36, 0),
100 CHAN5G(38, 0), CHAN5G(40, 0),
101 CHAN5G(42, 0), CHAN5G(44, 0),
102 CHAN5G(46, 0), CHAN5G(48, 0),
103 CHAN5G(52, 0), CHAN5G(56, 0),
104 CHAN5G(60, 0), CHAN5G(64, 0),
105 CHAN5G(100, 0), CHAN5G(104, 0),
106 CHAN5G(108, 0), CHAN5G(112, 0),
107 CHAN5G(116, 0), CHAN5G(120, 0),
108 CHAN5G(124, 0), CHAN5G(128, 0),
109 CHAN5G(132, 0), CHAN5G(136, 0),
110 CHAN5G(140, 0), CHAN5G(149, 0),
111 CHAN5G(153, 0), CHAN5G(157, 0),
112 CHAN5G(161, 0), CHAN5G(165, 0),
113 CHAN5G(184, 0), CHAN5G(188, 0),
114 CHAN5G(192, 0), CHAN5G(196, 0),
115 CHAN5G(200, 0), CHAN5G(204, 0),
116 CHAN5G(208, 0), CHAN5G(212, 0),
117 CHAN5G(216, 0),
118 };
119
120 static struct ieee80211_supported_band ath6kl_band_2ghz = {
121 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels),
122 .channels = ath6kl_2ghz_channels,
123 .n_bitrates = ath6kl_g_rates_size,
124 .bitrates = ath6kl_g_rates,
125 .ht_cap.cap = ath6kl_g_htcap,
126 .ht_cap.ht_supported = true,
127 };
128
129 static struct ieee80211_supported_band ath6kl_band_5ghz = {
130 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels),
131 .channels = ath6kl_5ghz_a_channels,
132 .n_bitrates = ath6kl_a_rates_size,
133 .bitrates = ath6kl_a_rates,
134 .ht_cap.cap = ath6kl_a_htcap,
135 .ht_cap.ht_supported = true,
136 };
137
138 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */
139
140 /* returns true if scheduled scan was stopped */
141 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif)
142 {
143 struct ath6kl *ar = vif->ar;
144
145 if (ar->state != ATH6KL_STATE_SCHED_SCAN)
146 return false;
147
148 del_timer_sync(&vif->sched_scan_timer);
149
150 ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
151 ATH6KL_HOST_MODE_AWAKE);
152
153 ar->state = ATH6KL_STATE_ON;
154
155 return true;
156 }
157
158 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif)
159 {
160 struct ath6kl *ar = vif->ar;
161 bool stopped;
162
163 stopped = __ath6kl_cfg80211_sscan_stop(vif);
164
165 if (!stopped)
166 return;
167
168 cfg80211_sched_scan_stopped(ar->wiphy);
169 }
170
171 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif,
172 enum nl80211_wpa_versions wpa_version)
173 {
174 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version);
175
176 if (!wpa_version) {
177 vif->auth_mode = NONE_AUTH;
178 } else if (wpa_version & NL80211_WPA_VERSION_2) {
179 vif->auth_mode = WPA2_AUTH;
180 } else if (wpa_version & NL80211_WPA_VERSION_1) {
181 vif->auth_mode = WPA_AUTH;
182 } else {
183 ath6kl_err("%s: %u not supported\n", __func__, wpa_version);
184 return -ENOTSUPP;
185 }
186
187 return 0;
188 }
189
190 static int ath6kl_set_auth_type(struct ath6kl_vif *vif,
191 enum nl80211_auth_type auth_type)
192 {
193 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type);
194
195 switch (auth_type) {
196 case NL80211_AUTHTYPE_OPEN_SYSTEM:
197 vif->dot11_auth_mode = OPEN_AUTH;
198 break;
199 case NL80211_AUTHTYPE_SHARED_KEY:
200 vif->dot11_auth_mode = SHARED_AUTH;
201 break;
202 case NL80211_AUTHTYPE_NETWORK_EAP:
203 vif->dot11_auth_mode = LEAP_AUTH;
204 break;
205
206 case NL80211_AUTHTYPE_AUTOMATIC:
207 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH;
208 break;
209
210 default:
211 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type);
212 return -ENOTSUPP;
213 }
214
215 return 0;
216 }
217
218 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast)
219 {
220 u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto;
221 u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len :
222 &vif->grp_crypto_len;
223
224 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n",
225 __func__, cipher, ucast);
226
227 switch (cipher) {
228 case 0:
229 /* our own hack to use value 0 as no crypto used */
230 *ar_cipher = NONE_CRYPT;
231 *ar_cipher_len = 0;
232 break;
233 case WLAN_CIPHER_SUITE_WEP40:
234 *ar_cipher = WEP_CRYPT;
235 *ar_cipher_len = 5;
236 break;
237 case WLAN_CIPHER_SUITE_WEP104:
238 *ar_cipher = WEP_CRYPT;
239 *ar_cipher_len = 13;
240 break;
241 case WLAN_CIPHER_SUITE_TKIP:
242 *ar_cipher = TKIP_CRYPT;
243 *ar_cipher_len = 0;
244 break;
245 case WLAN_CIPHER_SUITE_CCMP:
246 *ar_cipher = AES_CRYPT;
247 *ar_cipher_len = 0;
248 break;
249 case WLAN_CIPHER_SUITE_SMS4:
250 *ar_cipher = WAPI_CRYPT;
251 *ar_cipher_len = 0;
252 break;
253 default:
254 ath6kl_err("cipher 0x%x not supported\n", cipher);
255 return -ENOTSUPP;
256 }
257
258 return 0;
259 }
260
261 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt)
262 {
263 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt);
264
265 if (key_mgmt == WLAN_AKM_SUITE_PSK) {
266 if (vif->auth_mode == WPA_AUTH)
267 vif->auth_mode = WPA_PSK_AUTH;
268 else if (vif->auth_mode == WPA2_AUTH)
269 vif->auth_mode = WPA2_PSK_AUTH;
270 } else if (key_mgmt == 0x00409600) {
271 if (vif->auth_mode == WPA_AUTH)
272 vif->auth_mode = WPA_AUTH_CCKM;
273 else if (vif->auth_mode == WPA2_AUTH)
274 vif->auth_mode = WPA2_AUTH_CCKM;
275 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) {
276 vif->auth_mode = NONE_AUTH;
277 }
278 }
279
280 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif)
281 {
282 struct ath6kl *ar = vif->ar;
283
284 if (!test_bit(WMI_READY, &ar->flag)) {
285 ath6kl_err("wmi is not ready\n");
286 return false;
287 }
288
289 if (!test_bit(WLAN_ENABLED, &vif->flags)) {
290 ath6kl_err("wlan disabled\n");
291 return false;
292 }
293
294 return true;
295 }
296
297 static bool ath6kl_is_wpa_ie(const u8 *pos)
298 {
299 return pos[0] == WLAN_EID_WPA && pos[1] >= 4 &&
300 pos[2] == 0x00 && pos[3] == 0x50 &&
301 pos[4] == 0xf2 && pos[5] == 0x01;
302 }
303
304 static bool ath6kl_is_rsn_ie(const u8 *pos)
305 {
306 return pos[0] == WLAN_EID_RSN;
307 }
308
309 static bool ath6kl_is_wps_ie(const u8 *pos)
310 {
311 return (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
312 pos[1] >= 4 &&
313 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 &&
314 pos[5] == 0x04);
315 }
316
317 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies,
318 size_t ies_len)
319 {
320 struct ath6kl *ar = vif->ar;
321 const u8 *pos;
322 u8 *buf = NULL;
323 size_t len = 0;
324 int ret;
325
326 /*
327 * Clear previously set flag
328 */
329
330 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
331
332 /*
333 * Filter out RSN/WPA IE(s)
334 */
335
336 if (ies && ies_len) {
337 buf = kmalloc(ies_len, GFP_KERNEL);
338 if (buf == NULL)
339 return -ENOMEM;
340 pos = ies;
341
342 while (pos + 1 < ies + ies_len) {
343 if (pos + 2 + pos[1] > ies + ies_len)
344 break;
345 if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) {
346 memcpy(buf + len, pos, 2 + pos[1]);
347 len += 2 + pos[1];
348 }
349
350 if (ath6kl_is_wps_ie(pos))
351 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG;
352
353 pos += 2 + pos[1];
354 }
355 }
356
357 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
358 WMI_FRAME_ASSOC_REQ, buf, len);
359 kfree(buf);
360 return ret;
361 }
362
363 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type)
364 {
365 switch (type) {
366 case NL80211_IFTYPE_STATION:
367 *nw_type = INFRA_NETWORK;
368 break;
369 case NL80211_IFTYPE_ADHOC:
370 *nw_type = ADHOC_NETWORK;
371 break;
372 case NL80211_IFTYPE_AP:
373 *nw_type = AP_NETWORK;
374 break;
375 case NL80211_IFTYPE_P2P_CLIENT:
376 *nw_type = INFRA_NETWORK;
377 break;
378 case NL80211_IFTYPE_P2P_GO:
379 *nw_type = AP_NETWORK;
380 break;
381 default:
382 ath6kl_err("invalid interface type %u\n", type);
383 return -ENOTSUPP;
384 }
385
386 return 0;
387 }
388
389 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type,
390 u8 *if_idx, u8 *nw_type)
391 {
392 int i;
393
394 if (ath6kl_nliftype_to_drv_iftype(type, nw_type))
395 return false;
396
397 if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) &&
398 ar->num_vif))
399 return false;
400
401 if (type == NL80211_IFTYPE_STATION ||
402 type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
403 for (i = 0; i < ar->vif_max; i++) {
404 if ((ar->avail_idx_map >> i) & BIT(0)) {
405 *if_idx = i;
406 return true;
407 }
408 }
409 }
410
411 if (type == NL80211_IFTYPE_P2P_CLIENT ||
412 type == NL80211_IFTYPE_P2P_GO) {
413 for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
414 if ((ar->avail_idx_map >> i) & BIT(0)) {
415 *if_idx = i;
416 return true;
417 }
418 }
419 }
420
421 return false;
422 }
423
424 static bool ath6kl_is_tx_pending(struct ath6kl *ar)
425 {
426 return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0;
427 }
428
429
430 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
431 struct cfg80211_connect_params *sme)
432 {
433 struct ath6kl *ar = ath6kl_priv(dev);
434 struct ath6kl_vif *vif = netdev_priv(dev);
435 int status;
436 u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
437 u16 interval;
438
439 ath6kl_cfg80211_sscan_disable(vif);
440
441 vif->sme_state = SME_CONNECTING;
442
443 if (!ath6kl_cfg80211_ready(vif))
444 return -EIO;
445
446 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
447 ath6kl_err("destroy in progress\n");
448 return -EBUSY;
449 }
450
451 if (test_bit(SKIP_SCAN, &ar->flag) &&
452 ((sme->channel && sme->channel->center_freq == 0) ||
453 (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
454 ath6kl_err("SkipScan: channel or bssid invalid\n");
455 return -EINVAL;
456 }
457
458 if (down_interruptible(&ar->sem)) {
459 ath6kl_err("busy, couldn't get access\n");
460 return -ERESTARTSYS;
461 }
462
463 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
464 ath6kl_err("busy, destroy in progress\n");
465 up(&ar->sem);
466 return -EBUSY;
467 }
468
469 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
470 /*
471 * sleep until the command queue drains
472 */
473 wait_event_interruptible_timeout(ar->event_wq,
474 ath6kl_is_tx_pending(ar),
475 WMI_TIMEOUT);
476 if (signal_pending(current)) {
477 ath6kl_err("cmd queue drain timeout\n");
478 up(&ar->sem);
479 return -EINTR;
480 }
481 }
482
483 status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
484 if (status) {
485 up(&ar->sem);
486 return status;
487 }
488
489 if (sme->ie == NULL || sme->ie_len == 0)
490 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
491
492 if (test_bit(CONNECTED, &vif->flags) &&
493 vif->ssid_len == sme->ssid_len &&
494 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
495 vif->reconnect_flag = true;
496 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx,
497 vif->req_bssid,
498 vif->ch_hint);
499
500 up(&ar->sem);
501 if (status) {
502 ath6kl_err("wmi_reconnect_cmd failed\n");
503 return -EIO;
504 }
505 return 0;
506 } else if (vif->ssid_len == sme->ssid_len &&
507 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
508 ath6kl_disconnect(vif);
509 }
510
511 memset(vif->ssid, 0, sizeof(vif->ssid));
512 vif->ssid_len = sme->ssid_len;
513 memcpy(vif->ssid, sme->ssid, sme->ssid_len);
514
515 if (sme->channel)
516 vif->ch_hint = sme->channel->center_freq;
517
518 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
519 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
520 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid));
521
522 ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions);
523
524 status = ath6kl_set_auth_type(vif, sme->auth_type);
525 if (status) {
526 up(&ar->sem);
527 return status;
528 }
529
530 if (sme->crypto.n_ciphers_pairwise)
531 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true);
532 else
533 ath6kl_set_cipher(vif, 0, true);
534
535 ath6kl_set_cipher(vif, sme->crypto.cipher_group, false);
536
537 if (sme->crypto.n_akm_suites)
538 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]);
539
540 if ((sme->key_len) &&
541 (vif->auth_mode == NONE_AUTH) &&
542 (vif->prwise_crypto == WEP_CRYPT)) {
543 struct ath6kl_key *key = NULL;
544
545 if (sme->key_idx > WMI_MAX_KEY_INDEX) {
546 ath6kl_err("key index %d out of bounds\n",
547 sme->key_idx);
548 up(&ar->sem);
549 return -ENOENT;
550 }
551
552 key = &vif->keys[sme->key_idx];
553 key->key_len = sme->key_len;
554 memcpy(key->key, sme->key, key->key_len);
555 key->cipher = vif->prwise_crypto;
556 vif->def_txkey_index = sme->key_idx;
557
558 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx,
559 vif->prwise_crypto,
560 GROUP_USAGE | TX_USAGE,
561 key->key_len,
562 NULL, 0,
563 key->key, KEY_OP_INIT_VAL, NULL,
564 NO_SYNC_WMIFLAG);
565 }
566
567 if (!ar->usr_bss_filter) {
568 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
569 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
570 ALL_BSS_FILTER, 0) != 0) {
571 ath6kl_err("couldn't set bss filtering\n");
572 up(&ar->sem);
573 return -EIO;
574 }
575 }
576
577 vif->nw_type = vif->next_mode;
578
579 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
580 nw_subtype = SUBTYPE_P2PCLIENT;
581
582 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
583 "%s: connect called with authmode %d dot11 auth %d"
584 " PW crypto %d PW crypto len %d GRP crypto %d"
585 " GRP crypto len %d channel hint %u\n",
586 __func__,
587 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
588 vif->prwise_crypto_len, vif->grp_crypto,
589 vif->grp_crypto_len, vif->ch_hint);
590
591 vif->reconnect_flag = 0;
592
593 if (vif->nw_type == INFRA_NETWORK) {
594 interval = max_t(u16, vif->listen_intvl_t,
595 ATH6KL_MAX_WOW_LISTEN_INTL);
596 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
597 interval,
598 0);
599 if (status) {
600 ath6kl_err("couldn't set listen intervel\n");
601 up(&ar->sem);
602 return status;
603 }
604 }
605
606 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
607 vif->dot11_auth_mode, vif->auth_mode,
608 vif->prwise_crypto,
609 vif->prwise_crypto_len,
610 vif->grp_crypto, vif->grp_crypto_len,
611 vif->ssid_len, vif->ssid,
612 vif->req_bssid, vif->ch_hint,
613 ar->connect_ctrl_flags, nw_subtype);
614
615 /* disable background scan if period is 0 */
616 if (sme->bg_scan_period == 0)
617 sme->bg_scan_period = 0xffff;
618
619 /* configure default value if not specified */
620 if (sme->bg_scan_period == -1)
621 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
622
623 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
624 sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
625
626 up(&ar->sem);
627
628 if (status == -EINVAL) {
629 memset(vif->ssid, 0, sizeof(vif->ssid));
630 vif->ssid_len = 0;
631 ath6kl_err("invalid request\n");
632 return -ENOENT;
633 } else if (status) {
634 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
635 return -EIO;
636 }
637
638 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
639 ((vif->auth_mode == WPA_PSK_AUTH) ||
640 (vif->auth_mode == WPA2_PSK_AUTH))) {
641 mod_timer(&vif->disconnect_timer,
642 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
643 }
644
645 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
646 set_bit(CONNECT_PEND, &vif->flags);
647
648 return 0;
649 }
650
651 static struct cfg80211_bss *
652 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif,
653 enum network_type nw_type,
654 const u8 *bssid,
655 struct ieee80211_channel *chan,
656 const u8 *beacon_ie,
657 size_t beacon_ie_len)
658 {
659 struct ath6kl *ar = vif->ar;
660 struct cfg80211_bss *bss;
661 u16 cap_mask, cap_val;
662 u8 *ie;
663
664 if (nw_type & ADHOC_NETWORK) {
665 cap_mask = WLAN_CAPABILITY_IBSS;
666 cap_val = WLAN_CAPABILITY_IBSS;
667 } else {
668 cap_mask = WLAN_CAPABILITY_ESS;
669 cap_val = WLAN_CAPABILITY_ESS;
670 }
671
672 bss = cfg80211_get_bss(ar->wiphy, chan, bssid,
673 vif->ssid, vif->ssid_len,
674 cap_mask, cap_val);
675 if (bss == NULL) {
676 /*
677 * Since cfg80211 may not yet know about the BSS,
678 * generate a partial entry until the first BSS info
679 * event becomes available.
680 *
681 * Prepend SSID element since it is not included in the Beacon
682 * IEs from the target.
683 */
684 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL);
685 if (ie == NULL)
686 return NULL;
687 ie[0] = WLAN_EID_SSID;
688 ie[1] = vif->ssid_len;
689 memcpy(ie + 2, vif->ssid, vif->ssid_len);
690 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len);
691 bss = cfg80211_inform_bss(ar->wiphy, chan,
692 bssid, 0, cap_val, 100,
693 ie, 2 + vif->ssid_len + beacon_ie_len,
694 0, GFP_KERNEL);
695 if (bss)
696 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
697 "added bss %pM to cfg80211\n", bssid);
698 kfree(ie);
699 } else
700 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n");
701
702 return bss;
703 }
704
705 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
706 u8 *bssid, u16 listen_intvl,
707 u16 beacon_intvl,
708 enum network_type nw_type,
709 u8 beacon_ie_len, u8 assoc_req_len,
710 u8 assoc_resp_len, u8 *assoc_info)
711 {
712 struct ieee80211_channel *chan;
713 struct ath6kl *ar = vif->ar;
714 struct cfg80211_bss *bss;
715
716 /* capinfo + listen interval */
717 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
718
719 /* capinfo + status code + associd */
720 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
721
722 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
723 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
724 assoc_resp_ie_offset;
725
726 assoc_req_len -= assoc_req_ie_offset;
727 assoc_resp_len -= assoc_resp_ie_offset;
728
729 /*
730 * Store Beacon interval here; DTIM period will be available only once
731 * a Beacon frame from the AP is seen.
732 */
733 vif->assoc_bss_beacon_int = beacon_intvl;
734 clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
735
736 if (nw_type & ADHOC_NETWORK) {
737 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
738 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
739 "%s: ath6k not in ibss mode\n", __func__);
740 return;
741 }
742 }
743
744 if (nw_type & INFRA_NETWORK) {
745 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
746 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
747 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
748 "%s: ath6k not in station mode\n", __func__);
749 return;
750 }
751 }
752
753 chan = ieee80211_get_channel(ar->wiphy, (int) channel);
754
755 bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
756 assoc_info, beacon_ie_len);
757 if (!bss) {
758 ath6kl_err("could not add cfg80211 bss entry\n");
759 return;
760 }
761
762 if (nw_type & ADHOC_NETWORK) {
763 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
764 nw_type & ADHOC_CREATOR ? "creator" : "joiner");
765 cfg80211_ibss_joined(vif->ndev, bssid, GFP_KERNEL);
766 cfg80211_put_bss(bss);
767 return;
768 }
769
770 if (vif->sme_state == SME_CONNECTING) {
771 /* inform connect result to cfg80211 */
772 vif->sme_state = SME_CONNECTED;
773 cfg80211_connect_result(vif->ndev, bssid,
774 assoc_req_ie, assoc_req_len,
775 assoc_resp_ie, assoc_resp_len,
776 WLAN_STATUS_SUCCESS, GFP_KERNEL);
777 cfg80211_put_bss(bss);
778 } else if (vif->sme_state == SME_CONNECTED) {
779 /* inform roam event to cfg80211 */
780 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len,
781 assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
782 }
783 }
784
785 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
786 struct net_device *dev, u16 reason_code)
787 {
788 struct ath6kl *ar = ath6kl_priv(dev);
789 struct ath6kl_vif *vif = netdev_priv(dev);
790
791 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
792 reason_code);
793
794 ath6kl_cfg80211_sscan_disable(vif);
795
796 if (!ath6kl_cfg80211_ready(vif))
797 return -EIO;
798
799 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
800 ath6kl_err("busy, destroy in progress\n");
801 return -EBUSY;
802 }
803
804 if (down_interruptible(&ar->sem)) {
805 ath6kl_err("busy, couldn't get access\n");
806 return -ERESTARTSYS;
807 }
808
809 vif->reconnect_flag = 0;
810 ath6kl_disconnect(vif);
811 memset(vif->ssid, 0, sizeof(vif->ssid));
812 vif->ssid_len = 0;
813
814 if (!test_bit(SKIP_SCAN, &ar->flag))
815 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
816
817 up(&ar->sem);
818
819 vif->sme_state = SME_DISCONNECTED;
820
821 return 0;
822 }
823
824 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
825 u8 *bssid, u8 assoc_resp_len,
826 u8 *assoc_info, u16 proto_reason)
827 {
828 struct ath6kl *ar = vif->ar;
829
830 if (vif->scan_req) {
831 cfg80211_scan_done(vif->scan_req, true);
832 vif->scan_req = NULL;
833 }
834
835 if (vif->nw_type & ADHOC_NETWORK) {
836 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
837 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
838 "%s: ath6k not in ibss mode\n", __func__);
839 return;
840 }
841 memset(bssid, 0, ETH_ALEN);
842 cfg80211_ibss_joined(vif->ndev, bssid, GFP_KERNEL);
843 return;
844 }
845
846 if (vif->nw_type & INFRA_NETWORK) {
847 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
848 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
849 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
850 "%s: ath6k not in station mode\n", __func__);
851 return;
852 }
853 }
854
855 /*
856 * Send a disconnect command to target when a disconnect event is
857 * received with reason code other than 3 (DISCONNECT_CMD - disconnect
858 * request from host) to make the firmware stop trying to connect even
859 * after giving disconnect event. There will be one more disconnect
860 * event for this disconnect command with reason code DISCONNECT_CMD
861 * which will be notified to cfg80211.
862 */
863
864 if (reason != DISCONNECT_CMD) {
865 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
866 return;
867 }
868
869 clear_bit(CONNECT_PEND, &vif->flags);
870
871 if (vif->sme_state == SME_CONNECTING) {
872 cfg80211_connect_result(vif->ndev,
873 bssid, NULL, 0,
874 NULL, 0,
875 WLAN_STATUS_UNSPECIFIED_FAILURE,
876 GFP_KERNEL);
877 } else if (vif->sme_state == SME_CONNECTED) {
878 cfg80211_disconnected(vif->ndev, reason,
879 NULL, 0, GFP_KERNEL);
880 }
881
882 vif->sme_state = SME_DISCONNECTED;
883 }
884
885 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
886 struct ath6kl_vif *vif,
887 struct cfg80211_ssid *ssids, int n_ssids)
888 {
889 u8 i;
890
891 if (n_ssids > MAX_PROBED_SSIDS)
892 return -EINVAL;
893
894 for (i = 0; i < n_ssids; i++) {
895 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
896 ssids[i].ssid_len ?
897 SPECIFIC_SSID_FLAG : ANY_SSID_FLAG,
898 ssids[i].ssid_len,
899 ssids[i].ssid);
900 }
901
902 /* Make sure no old entries are left behind */
903 for (i = n_ssids; i < MAX_PROBED_SSIDS; i++) {
904 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
905 DISABLE_SSID_FLAG, 0, NULL);
906 }
907
908 return 0;
909 }
910
911 static int ath6kl_cfg80211_scan(struct wiphy *wiphy, struct net_device *ndev,
912 struct cfg80211_scan_request *request)
913 {
914 struct ath6kl *ar = ath6kl_priv(ndev);
915 struct ath6kl_vif *vif = netdev_priv(ndev);
916 s8 n_channels = 0;
917 u16 *channels = NULL;
918 int ret = 0;
919 u32 force_fg_scan = 0;
920
921 if (!ath6kl_cfg80211_ready(vif))
922 return -EIO;
923
924 ath6kl_cfg80211_sscan_disable(vif);
925
926 if (!ar->usr_bss_filter) {
927 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
928 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
929 ALL_BSS_FILTER, 0);
930 if (ret) {
931 ath6kl_err("couldn't set bss filtering\n");
932 return ret;
933 }
934 }
935
936 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
937 request->n_ssids);
938 if (ret < 0)
939 return ret;
940
941 /* this also clears IE in fw if it's not set */
942 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
943 WMI_FRAME_PROBE_REQ,
944 request->ie, request->ie_len);
945 if (ret) {
946 ath6kl_err("failed to set Probe Request appie for scan");
947 return ret;
948 }
949
950 /*
951 * Scan only the requested channels if the request specifies a set of
952 * channels. If the list is longer than the target supports, do not
953 * configure the list and instead, scan all available channels.
954 */
955 if (request->n_channels > 0 &&
956 request->n_channels <= WMI_MAX_CHANNELS) {
957 u8 i;
958
959 n_channels = request->n_channels;
960
961 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
962 if (channels == NULL) {
963 ath6kl_warn("failed to set scan channels, scan all channels");
964 n_channels = 0;
965 }
966
967 for (i = 0; i < n_channels; i++)
968 channels[i] = request->channels[i]->center_freq;
969 }
970
971 if (test_bit(CONNECTED, &vif->flags))
972 force_fg_scan = 1;
973
974 vif->scan_req = request;
975
976 if (test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
977 ar->fw_capabilities)) {
978 /*
979 * If capable of doing P2P mgmt operations using
980 * station interface, send additional information like
981 * supported rates to advertise and xmit rates for
982 * probe requests
983 */
984 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
985 WMI_LONG_SCAN, force_fg_scan,
986 false, 0,
987 ATH6KL_FG_SCAN_INTERVAL,
988 n_channels, channels,
989 request->no_cck,
990 request->rates);
991 } else {
992 ret = ath6kl_wmi_startscan_cmd(ar->wmi, vif->fw_vif_idx,
993 WMI_LONG_SCAN, force_fg_scan,
994 false, 0,
995 ATH6KL_FG_SCAN_INTERVAL,
996 n_channels, channels);
997 }
998 if (ret) {
999 ath6kl_err("wmi_startscan_cmd failed\n");
1000 vif->scan_req = NULL;
1001 }
1002
1003 kfree(channels);
1004
1005 return ret;
1006 }
1007
1008 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1009 {
1010 struct ath6kl *ar = vif->ar;
1011 int i;
1012
1013 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1014 aborted ? " aborted" : "");
1015
1016 if (!vif->scan_req)
1017 return;
1018
1019 if (aborted)
1020 goto out;
1021
1022 if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1023 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1024 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1025 i + 1, DISABLE_SSID_FLAG,
1026 0, NULL);
1027 }
1028 }
1029
1030 out:
1031 cfg80211_scan_done(vif->scan_req, aborted);
1032 vif->scan_req = NULL;
1033 }
1034
1035 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1036 enum wmi_phy_mode mode)
1037 {
1038 enum nl80211_channel_type type;
1039
1040 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1041 "channel switch notify nw_type %d freq %d mode %d\n",
1042 vif->nw_type, freq, mode);
1043
1044 type = (mode == WMI_11G_HT20) ? NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT;
1045
1046 cfg80211_ch_switch_notify(vif->ndev, freq, type);
1047 }
1048
1049 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1050 u8 key_index, bool pairwise,
1051 const u8 *mac_addr,
1052 struct key_params *params)
1053 {
1054 struct ath6kl *ar = ath6kl_priv(ndev);
1055 struct ath6kl_vif *vif = netdev_priv(ndev);
1056 struct ath6kl_key *key = NULL;
1057 int seq_len;
1058 u8 key_usage;
1059 u8 key_type;
1060
1061 if (!ath6kl_cfg80211_ready(vif))
1062 return -EIO;
1063
1064 if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1065 if (params->key_len != WMI_KRK_LEN)
1066 return -EINVAL;
1067 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1068 params->key);
1069 }
1070
1071 if (key_index > WMI_MAX_KEY_INDEX) {
1072 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1073 "%s: key index %d out of bounds\n", __func__,
1074 key_index);
1075 return -ENOENT;
1076 }
1077
1078 key = &vif->keys[key_index];
1079 memset(key, 0, sizeof(struct ath6kl_key));
1080
1081 if (pairwise)
1082 key_usage = PAIRWISE_USAGE;
1083 else
1084 key_usage = GROUP_USAGE;
1085
1086 seq_len = params->seq_len;
1087 if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1088 seq_len > ATH6KL_KEY_SEQ_LEN) {
1089 /* Only first half of the WPI PN is configured */
1090 seq_len = ATH6KL_KEY_SEQ_LEN;
1091 }
1092 if (params->key_len > WLAN_MAX_KEY_LEN ||
1093 seq_len > sizeof(key->seq))
1094 return -EINVAL;
1095
1096 key->key_len = params->key_len;
1097 memcpy(key->key, params->key, key->key_len);
1098 key->seq_len = seq_len;
1099 memcpy(key->seq, params->seq, key->seq_len);
1100 key->cipher = params->cipher;
1101
1102 switch (key->cipher) {
1103 case WLAN_CIPHER_SUITE_WEP40:
1104 case WLAN_CIPHER_SUITE_WEP104:
1105 key_type = WEP_CRYPT;
1106 break;
1107
1108 case WLAN_CIPHER_SUITE_TKIP:
1109 key_type = TKIP_CRYPT;
1110 break;
1111
1112 case WLAN_CIPHER_SUITE_CCMP:
1113 key_type = AES_CRYPT;
1114 break;
1115 case WLAN_CIPHER_SUITE_SMS4:
1116 key_type = WAPI_CRYPT;
1117 break;
1118
1119 default:
1120 return -ENOTSUPP;
1121 }
1122
1123 if (((vif->auth_mode == WPA_PSK_AUTH) ||
1124 (vif->auth_mode == WPA2_PSK_AUTH)) &&
1125 (key_usage & GROUP_USAGE))
1126 del_timer(&vif->disconnect_timer);
1127
1128 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1129 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1130 __func__, key_index, key->key_len, key_type,
1131 key_usage, key->seq_len);
1132
1133 if (vif->nw_type == AP_NETWORK && !pairwise &&
1134 (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1135 key_type == WAPI_CRYPT)) {
1136 ar->ap_mode_bkey.valid = true;
1137 ar->ap_mode_bkey.key_index = key_index;
1138 ar->ap_mode_bkey.key_type = key_type;
1139 ar->ap_mode_bkey.key_len = key->key_len;
1140 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1141 if (!test_bit(CONNECTED, &vif->flags)) {
1142 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1143 "Delay initial group key configuration until AP mode has been started\n");
1144 /*
1145 * The key will be set in ath6kl_connect_ap_mode() once
1146 * the connected event is received from the target.
1147 */
1148 return 0;
1149 }
1150 }
1151
1152 if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1153 !test_bit(CONNECTED, &vif->flags)) {
1154 /*
1155 * Store the key locally so that it can be re-configured after
1156 * the AP mode has properly started
1157 * (ath6kl_install_statioc_wep_keys).
1158 */
1159 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1160 "Delay WEP key configuration until AP mode has been started\n");
1161 vif->wep_key_list[key_index].key_len = key->key_len;
1162 memcpy(vif->wep_key_list[key_index].key, key->key,
1163 key->key_len);
1164 return 0;
1165 }
1166
1167 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1168 key_type, key_usage, key->key_len,
1169 key->seq, key->seq_len, key->key,
1170 KEY_OP_INIT_VAL,
1171 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1172 }
1173
1174 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1175 u8 key_index, bool pairwise,
1176 const u8 *mac_addr)
1177 {
1178 struct ath6kl *ar = ath6kl_priv(ndev);
1179 struct ath6kl_vif *vif = netdev_priv(ndev);
1180
1181 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1182
1183 if (!ath6kl_cfg80211_ready(vif))
1184 return -EIO;
1185
1186 if (key_index > WMI_MAX_KEY_INDEX) {
1187 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1188 "%s: key index %d out of bounds\n", __func__,
1189 key_index);
1190 return -ENOENT;
1191 }
1192
1193 if (!vif->keys[key_index].key_len) {
1194 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1195 "%s: index %d is empty\n", __func__, key_index);
1196 return 0;
1197 }
1198
1199 vif->keys[key_index].key_len = 0;
1200
1201 return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1202 }
1203
1204 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1205 u8 key_index, bool pairwise,
1206 const u8 *mac_addr, void *cookie,
1207 void (*callback) (void *cookie,
1208 struct key_params *))
1209 {
1210 struct ath6kl_vif *vif = netdev_priv(ndev);
1211 struct ath6kl_key *key = NULL;
1212 struct key_params params;
1213
1214 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1215
1216 if (!ath6kl_cfg80211_ready(vif))
1217 return -EIO;
1218
1219 if (key_index > WMI_MAX_KEY_INDEX) {
1220 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1221 "%s: key index %d out of bounds\n", __func__,
1222 key_index);
1223 return -ENOENT;
1224 }
1225
1226 key = &vif->keys[key_index];
1227 memset(&params, 0, sizeof(params));
1228 params.cipher = key->cipher;
1229 params.key_len = key->key_len;
1230 params.seq_len = key->seq_len;
1231 params.seq = key->seq;
1232 params.key = key->key;
1233
1234 callback(cookie, &params);
1235
1236 return key->key_len ? 0 : -ENOENT;
1237 }
1238
1239 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1240 struct net_device *ndev,
1241 u8 key_index, bool unicast,
1242 bool multicast)
1243 {
1244 struct ath6kl *ar = ath6kl_priv(ndev);
1245 struct ath6kl_vif *vif = netdev_priv(ndev);
1246 struct ath6kl_key *key = NULL;
1247 u8 key_usage;
1248 enum crypto_type key_type = NONE_CRYPT;
1249
1250 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1251
1252 if (!ath6kl_cfg80211_ready(vif))
1253 return -EIO;
1254
1255 if (key_index > WMI_MAX_KEY_INDEX) {
1256 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1257 "%s: key index %d out of bounds\n",
1258 __func__, key_index);
1259 return -ENOENT;
1260 }
1261
1262 if (!vif->keys[key_index].key_len) {
1263 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1264 __func__, key_index);
1265 return -EINVAL;
1266 }
1267
1268 vif->def_txkey_index = key_index;
1269 key = &vif->keys[vif->def_txkey_index];
1270 key_usage = GROUP_USAGE;
1271 if (vif->prwise_crypto == WEP_CRYPT)
1272 key_usage |= TX_USAGE;
1273 if (unicast)
1274 key_type = vif->prwise_crypto;
1275 if (multicast)
1276 key_type = vif->grp_crypto;
1277
1278 if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1279 return 0; /* Delay until AP mode has been started */
1280
1281 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1282 vif->def_txkey_index,
1283 key_type, key_usage,
1284 key->key_len, key->seq, key->seq_len,
1285 key->key,
1286 KEY_OP_INIT_VAL, NULL,
1287 SYNC_BOTH_WMIFLAG);
1288 }
1289
1290 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1291 bool ismcast)
1292 {
1293 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1294 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1295
1296 cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1297 (ismcast ? NL80211_KEYTYPE_GROUP :
1298 NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1299 GFP_KERNEL);
1300 }
1301
1302 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1303 {
1304 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1305 struct ath6kl_vif *vif;
1306 int ret;
1307
1308 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1309 changed);
1310
1311 vif = ath6kl_vif_first(ar);
1312 if (!vif)
1313 return -EIO;
1314
1315 if (!ath6kl_cfg80211_ready(vif))
1316 return -EIO;
1317
1318 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1319 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1320 if (ret != 0) {
1321 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1322 return -EIO;
1323 }
1324 }
1325
1326 return 0;
1327 }
1328
1329 /*
1330 * The type nl80211_tx_power_setting replaces the following
1331 * data type from 2.6.36 onwards
1332 */
1333 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1334 enum nl80211_tx_power_setting type,
1335 int mbm)
1336 {
1337 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1338 struct ath6kl_vif *vif;
1339 int dbm = MBM_TO_DBM(mbm);
1340
1341 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1342 type, dbm);
1343
1344 vif = ath6kl_vif_first(ar);
1345 if (!vif)
1346 return -EIO;
1347
1348 if (!ath6kl_cfg80211_ready(vif))
1349 return -EIO;
1350
1351 switch (type) {
1352 case NL80211_TX_POWER_AUTOMATIC:
1353 return 0;
1354 case NL80211_TX_POWER_LIMITED:
1355 ar->tx_pwr = dbm;
1356 break;
1357 default:
1358 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1359 __func__, type);
1360 return -EOPNOTSUPP;
1361 }
1362
1363 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1364
1365 return 0;
1366 }
1367
1368 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, int *dbm)
1369 {
1370 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1371 struct ath6kl_vif *vif;
1372
1373 vif = ath6kl_vif_first(ar);
1374 if (!vif)
1375 return -EIO;
1376
1377 if (!ath6kl_cfg80211_ready(vif))
1378 return -EIO;
1379
1380 if (test_bit(CONNECTED, &vif->flags)) {
1381 ar->tx_pwr = 0;
1382
1383 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1384 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1385 return -EIO;
1386 }
1387
1388 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1389 5 * HZ);
1390
1391 if (signal_pending(current)) {
1392 ath6kl_err("target did not respond\n");
1393 return -EINTR;
1394 }
1395 }
1396
1397 *dbm = ar->tx_pwr;
1398 return 0;
1399 }
1400
1401 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1402 struct net_device *dev,
1403 bool pmgmt, int timeout)
1404 {
1405 struct ath6kl *ar = ath6kl_priv(dev);
1406 struct wmi_power_mode_cmd mode;
1407 struct ath6kl_vif *vif = netdev_priv(dev);
1408
1409 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1410 __func__, pmgmt, timeout);
1411
1412 if (!ath6kl_cfg80211_ready(vif))
1413 return -EIO;
1414
1415 if (pmgmt) {
1416 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1417 mode.pwr_mode = REC_POWER;
1418 } else {
1419 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1420 mode.pwr_mode = MAX_PERF_POWER;
1421 }
1422
1423 if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1424 mode.pwr_mode) != 0) {
1425 ath6kl_err("wmi_powermode_cmd failed\n");
1426 return -EIO;
1427 }
1428
1429 return 0;
1430 }
1431
1432 static struct net_device *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1433 char *name,
1434 enum nl80211_iftype type,
1435 u32 *flags,
1436 struct vif_params *params)
1437 {
1438 struct ath6kl *ar = wiphy_priv(wiphy);
1439 struct net_device *ndev;
1440 u8 if_idx, nw_type;
1441
1442 if (ar->num_vif == ar->vif_max) {
1443 ath6kl_err("Reached maximum number of supported vif\n");
1444 return ERR_PTR(-EINVAL);
1445 }
1446
1447 if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1448 ath6kl_err("Not a supported interface type\n");
1449 return ERR_PTR(-EINVAL);
1450 }
1451
1452 ndev = ath6kl_interface_add(ar, name, type, if_idx, nw_type);
1453 if (!ndev)
1454 return ERR_PTR(-ENOMEM);
1455
1456 ar->num_vif++;
1457
1458 return ndev;
1459 }
1460
1461 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1462 struct net_device *ndev)
1463 {
1464 struct ath6kl *ar = wiphy_priv(wiphy);
1465 struct ath6kl_vif *vif = netdev_priv(ndev);
1466
1467 spin_lock_bh(&ar->list_lock);
1468 list_del(&vif->list);
1469 spin_unlock_bh(&ar->list_lock);
1470
1471 ath6kl_cleanup_vif(vif, test_bit(WMI_READY, &ar->flag));
1472
1473 ath6kl_cfg80211_vif_cleanup(vif);
1474
1475 return 0;
1476 }
1477
1478 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1479 struct net_device *ndev,
1480 enum nl80211_iftype type, u32 *flags,
1481 struct vif_params *params)
1482 {
1483 struct ath6kl_vif *vif = netdev_priv(ndev);
1484 int i;
1485
1486 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1487
1488 /*
1489 * Don't bring up p2p on an interface which is not initialized
1490 * for p2p operation where fw does not have capability to switch
1491 * dynamically between non-p2p and p2p type interface.
1492 */
1493 if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1494 vif->ar->fw_capabilities) &&
1495 (type == NL80211_IFTYPE_P2P_CLIENT ||
1496 type == NL80211_IFTYPE_P2P_GO)) {
1497 if (vif->ar->vif_max == 1) {
1498 if (vif->fw_vif_idx != 0)
1499 return -EINVAL;
1500 else
1501 goto set_iface_type;
1502 }
1503
1504 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1505 if (i == vif->fw_vif_idx)
1506 break;
1507 }
1508
1509 if (i == vif->ar->vif_max) {
1510 ath6kl_err("Invalid interface to bring up P2P\n");
1511 return -EINVAL;
1512 }
1513 }
1514
1515 set_iface_type:
1516 switch (type) {
1517 case NL80211_IFTYPE_STATION:
1518 vif->next_mode = INFRA_NETWORK;
1519 break;
1520 case NL80211_IFTYPE_ADHOC:
1521 vif->next_mode = ADHOC_NETWORK;
1522 break;
1523 case NL80211_IFTYPE_AP:
1524 vif->next_mode = AP_NETWORK;
1525 break;
1526 case NL80211_IFTYPE_P2P_CLIENT:
1527 vif->next_mode = INFRA_NETWORK;
1528 break;
1529 case NL80211_IFTYPE_P2P_GO:
1530 vif->next_mode = AP_NETWORK;
1531 break;
1532 default:
1533 ath6kl_err("invalid interface type %u\n", type);
1534 return -EOPNOTSUPP;
1535 }
1536
1537 vif->wdev.iftype = type;
1538
1539 return 0;
1540 }
1541
1542 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1543 struct net_device *dev,
1544 struct cfg80211_ibss_params *ibss_param)
1545 {
1546 struct ath6kl *ar = ath6kl_priv(dev);
1547 struct ath6kl_vif *vif = netdev_priv(dev);
1548 int status;
1549
1550 if (!ath6kl_cfg80211_ready(vif))
1551 return -EIO;
1552
1553 vif->ssid_len = ibss_param->ssid_len;
1554 memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1555
1556 if (ibss_param->channel)
1557 vif->ch_hint = ibss_param->channel->center_freq;
1558
1559 if (ibss_param->channel_fixed) {
1560 /*
1561 * TODO: channel_fixed: The channel should be fixed, do not
1562 * search for IBSSs to join on other channels. Target
1563 * firmware does not support this feature, needs to be
1564 * updated.
1565 */
1566 return -EOPNOTSUPP;
1567 }
1568
1569 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1570 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1571 memcpy(vif->req_bssid, ibss_param->bssid,
1572 sizeof(vif->req_bssid));
1573
1574 ath6kl_set_wpa_version(vif, 0);
1575
1576 status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1577 if (status)
1578 return status;
1579
1580 if (ibss_param->privacy) {
1581 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1582 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1583 } else {
1584 ath6kl_set_cipher(vif, 0, true);
1585 ath6kl_set_cipher(vif, 0, false);
1586 }
1587
1588 vif->nw_type = vif->next_mode;
1589
1590 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1591 "%s: connect called with authmode %d dot11 auth %d"
1592 " PW crypto %d PW crypto len %d GRP crypto %d"
1593 " GRP crypto len %d channel hint %u\n",
1594 __func__,
1595 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1596 vif->prwise_crypto_len, vif->grp_crypto,
1597 vif->grp_crypto_len, vif->ch_hint);
1598
1599 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1600 vif->dot11_auth_mode, vif->auth_mode,
1601 vif->prwise_crypto,
1602 vif->prwise_crypto_len,
1603 vif->grp_crypto, vif->grp_crypto_len,
1604 vif->ssid_len, vif->ssid,
1605 vif->req_bssid, vif->ch_hint,
1606 ar->connect_ctrl_flags, SUBTYPE_NONE);
1607 set_bit(CONNECT_PEND, &vif->flags);
1608
1609 return 0;
1610 }
1611
1612 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1613 struct net_device *dev)
1614 {
1615 struct ath6kl_vif *vif = netdev_priv(dev);
1616
1617 if (!ath6kl_cfg80211_ready(vif))
1618 return -EIO;
1619
1620 ath6kl_disconnect(vif);
1621 memset(vif->ssid, 0, sizeof(vif->ssid));
1622 vif->ssid_len = 0;
1623
1624 return 0;
1625 }
1626
1627 static const u32 cipher_suites[] = {
1628 WLAN_CIPHER_SUITE_WEP40,
1629 WLAN_CIPHER_SUITE_WEP104,
1630 WLAN_CIPHER_SUITE_TKIP,
1631 WLAN_CIPHER_SUITE_CCMP,
1632 CCKM_KRK_CIPHER_SUITE,
1633 WLAN_CIPHER_SUITE_SMS4,
1634 };
1635
1636 static bool is_rate_legacy(s32 rate)
1637 {
1638 static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1639 6000, 9000, 12000, 18000, 24000,
1640 36000, 48000, 54000
1641 };
1642 u8 i;
1643
1644 for (i = 0; i < ARRAY_SIZE(legacy); i++)
1645 if (rate == legacy[i])
1646 return true;
1647
1648 return false;
1649 }
1650
1651 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1652 {
1653 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1654 52000, 58500, 65000, 72200
1655 };
1656 u8 i;
1657
1658 for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1659 if (rate == ht20[i]) {
1660 if (i == ARRAY_SIZE(ht20) - 1)
1661 /* last rate uses sgi */
1662 *sgi = true;
1663 else
1664 *sgi = false;
1665
1666 *mcs = i;
1667 return true;
1668 }
1669 }
1670 return false;
1671 }
1672
1673 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1674 {
1675 static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1676 81000, 108000, 121500, 135000,
1677 150000
1678 };
1679 u8 i;
1680
1681 for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1682 if (rate == ht40[i]) {
1683 if (i == ARRAY_SIZE(ht40) - 1)
1684 /* last rate uses sgi */
1685 *sgi = true;
1686 else
1687 *sgi = false;
1688
1689 *mcs = i;
1690 return true;
1691 }
1692 }
1693
1694 return false;
1695 }
1696
1697 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1698 u8 *mac, struct station_info *sinfo)
1699 {
1700 struct ath6kl *ar = ath6kl_priv(dev);
1701 struct ath6kl_vif *vif = netdev_priv(dev);
1702 long left;
1703 bool sgi;
1704 s32 rate;
1705 int ret;
1706 u8 mcs;
1707
1708 if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1709 return -ENOENT;
1710
1711 if (down_interruptible(&ar->sem))
1712 return -EBUSY;
1713
1714 set_bit(STATS_UPDATE_PEND, &vif->flags);
1715
1716 ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1717
1718 if (ret != 0) {
1719 up(&ar->sem);
1720 return -EIO;
1721 }
1722
1723 left = wait_event_interruptible_timeout(ar->event_wq,
1724 !test_bit(STATS_UPDATE_PEND,
1725 &vif->flags),
1726 WMI_TIMEOUT);
1727
1728 up(&ar->sem);
1729
1730 if (left == 0)
1731 return -ETIMEDOUT;
1732 else if (left < 0)
1733 return left;
1734
1735 if (vif->target_stats.rx_byte) {
1736 sinfo->rx_bytes = vif->target_stats.rx_byte;
1737 sinfo->filled |= STATION_INFO_RX_BYTES;
1738 sinfo->rx_packets = vif->target_stats.rx_pkt;
1739 sinfo->filled |= STATION_INFO_RX_PACKETS;
1740 }
1741
1742 if (vif->target_stats.tx_byte) {
1743 sinfo->tx_bytes = vif->target_stats.tx_byte;
1744 sinfo->filled |= STATION_INFO_TX_BYTES;
1745 sinfo->tx_packets = vif->target_stats.tx_pkt;
1746 sinfo->filled |= STATION_INFO_TX_PACKETS;
1747 }
1748
1749 sinfo->signal = vif->target_stats.cs_rssi;
1750 sinfo->filled |= STATION_INFO_SIGNAL;
1751
1752 rate = vif->target_stats.tx_ucast_rate;
1753
1754 if (is_rate_legacy(rate)) {
1755 sinfo->txrate.legacy = rate / 100;
1756 } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1757 if (sgi) {
1758 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1759 sinfo->txrate.mcs = mcs - 1;
1760 } else {
1761 sinfo->txrate.mcs = mcs;
1762 }
1763
1764 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1765 } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1766 if (sgi) {
1767 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1768 sinfo->txrate.mcs = mcs - 1;
1769 } else {
1770 sinfo->txrate.mcs = mcs;
1771 }
1772
1773 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
1774 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1775 } else {
1776 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1777 "invalid rate from stats: %d\n", rate);
1778 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1779 return 0;
1780 }
1781
1782 sinfo->filled |= STATION_INFO_TX_BITRATE;
1783
1784 if (test_bit(CONNECTED, &vif->flags) &&
1785 test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1786 vif->nw_type == INFRA_NETWORK) {
1787 sinfo->filled |= STATION_INFO_BSS_PARAM;
1788 sinfo->bss_param.flags = 0;
1789 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1790 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1791 }
1792
1793 return 0;
1794 }
1795
1796 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1797 struct cfg80211_pmksa *pmksa)
1798 {
1799 struct ath6kl *ar = ath6kl_priv(netdev);
1800 struct ath6kl_vif *vif = netdev_priv(netdev);
1801
1802 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1803 pmksa->pmkid, true);
1804 }
1805
1806 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1807 struct cfg80211_pmksa *pmksa)
1808 {
1809 struct ath6kl *ar = ath6kl_priv(netdev);
1810 struct ath6kl_vif *vif = netdev_priv(netdev);
1811
1812 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1813 pmksa->pmkid, false);
1814 }
1815
1816 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1817 {
1818 struct ath6kl *ar = ath6kl_priv(netdev);
1819 struct ath6kl_vif *vif = netdev_priv(netdev);
1820
1821 if (test_bit(CONNECTED, &vif->flags))
1822 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1823 vif->bssid, NULL, false);
1824 return 0;
1825 }
1826
1827 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1828 struct cfg80211_wowlan *wow, u32 *filter)
1829 {
1830 int ret, pos;
1831 u8 mask[WOW_MASK_SIZE];
1832 u16 i;
1833
1834 /* Configure the patterns that we received from the user. */
1835 for (i = 0; i < wow->n_patterns; i++) {
1836
1837 /*
1838 * Convert given nl80211 specific mask value to equivalent
1839 * driver specific mask value and send it to the chip along
1840 * with patterns. For example, If the mask value defined in
1841 * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1842 * then equivalent driver specific mask value is
1843 * "0xFF 0x00 0xFF 0x00".
1844 */
1845 memset(&mask, 0, sizeof(mask));
1846 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1847 if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1848 mask[pos] = 0xFF;
1849 }
1850 /*
1851 * Note: Pattern's offset is not passed as part of wowlan
1852 * parameter from CFG layer. So it's always passed as ZERO
1853 * to the firmware. It means, given WOW patterns are always
1854 * matched from the first byte of received pkt in the firmware.
1855 */
1856 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1857 vif->fw_vif_idx, WOW_LIST_ID,
1858 wow->patterns[i].pattern_len,
1859 0 /* pattern offset */,
1860 wow->patterns[i].pattern, mask);
1861 if (ret)
1862 return ret;
1863 }
1864
1865 if (wow->disconnect)
1866 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1867
1868 if (wow->magic_pkt)
1869 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1870
1871 if (wow->gtk_rekey_failure)
1872 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1873
1874 if (wow->eap_identity_req)
1875 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1876
1877 if (wow->four_way_handshake)
1878 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1879
1880 return 0;
1881 }
1882
1883 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1884 {
1885 static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1886 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1887 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1888 0x00, 0x08 };
1889 static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1890 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1891 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1892 0x00, 0x7f };
1893 u8 unicst_offset = 0;
1894 static const u8 arp_pattern[] = { 0x08, 0x06 };
1895 static const u8 arp_mask[] = { 0xff, 0xff };
1896 u8 arp_offset = 20;
1897 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1898 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1899 u8 discvr_offset = 38;
1900 static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1901 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1902 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1903 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1904 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1905 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1906 static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1907 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1908 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1909 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1910 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1911 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1912 u8 dhcp_offset = 0;
1913 int ret;
1914
1915 /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1916 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1917 vif->fw_vif_idx, WOW_LIST_ID,
1918 sizeof(unicst_pattern), unicst_offset,
1919 unicst_pattern, unicst_mask);
1920 if (ret) {
1921 ath6kl_err("failed to add WOW unicast IP pattern\n");
1922 return ret;
1923 }
1924
1925 /* Setup all ARP pkt pattern */
1926 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1927 vif->fw_vif_idx, WOW_LIST_ID,
1928 sizeof(arp_pattern), arp_offset,
1929 arp_pattern, arp_mask);
1930 if (ret) {
1931 ath6kl_err("failed to add WOW ARP pattern\n");
1932 return ret;
1933 }
1934
1935 /*
1936 * Setup multicast pattern for mDNS 224.0.0.251,
1937 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
1938 */
1939 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1940 vif->fw_vif_idx, WOW_LIST_ID,
1941 sizeof(discvr_pattern), discvr_offset,
1942 discvr_pattern, discvr_mask);
1943 if (ret) {
1944 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
1945 return ret;
1946 }
1947
1948 /* Setup all DHCP broadcast pkt pattern */
1949 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1950 vif->fw_vif_idx, WOW_LIST_ID,
1951 sizeof(dhcp_pattern), dhcp_offset,
1952 dhcp_pattern, dhcp_mask);
1953 if (ret) {
1954 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
1955 return ret;
1956 }
1957
1958 return 0;
1959 }
1960
1961 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
1962 {
1963 struct net_device *ndev = vif->ndev;
1964 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1965 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1966 u8 discvr_offset = 38;
1967 u8 mac_mask[ETH_ALEN];
1968 int ret;
1969
1970 /* Setup unicast pkt pattern */
1971 memset(mac_mask, 0xff, ETH_ALEN);
1972 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1973 vif->fw_vif_idx, WOW_LIST_ID,
1974 ETH_ALEN, 0, ndev->dev_addr,
1975 mac_mask);
1976 if (ret) {
1977 ath6kl_err("failed to add WOW unicast pattern\n");
1978 return ret;
1979 }
1980
1981 /*
1982 * Setup multicast pattern for mDNS 224.0.0.251,
1983 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
1984 */
1985 if ((ndev->flags & IFF_ALLMULTI) ||
1986 (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
1987 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1988 vif->fw_vif_idx, WOW_LIST_ID,
1989 sizeof(discvr_pattern), discvr_offset,
1990 discvr_pattern, discvr_mask);
1991 if (ret) {
1992 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
1993 return ret;
1994 }
1995 }
1996
1997 return 0;
1998 }
1999
2000 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2001 {
2002 return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2003 }
2004
2005 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2006 {
2007 return !ar->tx_pending[ar->ctrl_ep];
2008 }
2009
2010 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2011 {
2012 int ret, left;
2013
2014 clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2015
2016 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2017 ATH6KL_HOST_MODE_ASLEEP);
2018 if (ret)
2019 return ret;
2020
2021 left = wait_event_interruptible_timeout(ar->event_wq,
2022 is_hsleep_mode_procsed(vif),
2023 WMI_TIMEOUT);
2024 if (left == 0) {
2025 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2026 ret = -ETIMEDOUT;
2027 } else if (left < 0) {
2028 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2029 left);
2030 ret = left;
2031 }
2032
2033 if (ar->tx_pending[ar->ctrl_ep]) {
2034 left = wait_event_interruptible_timeout(ar->event_wq,
2035 is_ctrl_ep_empty(ar),
2036 WMI_TIMEOUT);
2037 if (left == 0) {
2038 ath6kl_warn("clear wmi ctrl data timeout\n");
2039 ret = -ETIMEDOUT;
2040 } else if (left < 0) {
2041 ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2042 ret = left;
2043 }
2044 }
2045
2046 return ret;
2047 }
2048
2049 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2050 {
2051 struct in_device *in_dev;
2052 struct in_ifaddr *ifa;
2053 struct ath6kl_vif *vif;
2054 int ret;
2055 u32 filter = 0;
2056 u16 i, bmiss_time;
2057 u8 index = 0;
2058 __be32 ips[MAX_IP_ADDRS];
2059
2060 /* The FW currently can't support multi-vif WoW properly. */
2061 if (ar->num_vif > 1)
2062 return -EIO;
2063
2064 vif = ath6kl_vif_first(ar);
2065 if (!vif)
2066 return -EIO;
2067
2068 if (!ath6kl_cfg80211_ready(vif))
2069 return -EIO;
2070
2071 if (!test_bit(CONNECTED, &vif->flags))
2072 return -ENOTCONN;
2073
2074 if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2075 return -EINVAL;
2076
2077 if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags)) {
2078 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2079 vif->fw_vif_idx, false);
2080 if (ret)
2081 return ret;
2082 }
2083
2084 /* Clear existing WOW patterns */
2085 for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2086 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2087 WOW_LIST_ID, i);
2088
2089 /*
2090 * Skip the default WOW pattern configuration
2091 * if the driver receives any WOW patterns from
2092 * the user.
2093 */
2094 if (wow)
2095 ret = ath6kl_wow_usr(ar, vif, wow, &filter);
2096 else if (vif->nw_type == AP_NETWORK)
2097 ret = ath6kl_wow_ap(ar, vif);
2098 else
2099 ret = ath6kl_wow_sta(ar, vif);
2100
2101 if (ret)
2102 return ret;
2103
2104 netif_stop_queue(vif->ndev);
2105
2106 if (vif->nw_type != AP_NETWORK) {
2107 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2108 ATH6KL_MAX_WOW_LISTEN_INTL,
2109 0);
2110 if (ret)
2111 return ret;
2112
2113 /* Set listen interval x 15 times as bmiss time */
2114 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2115 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2116 bmiss_time = ATH6KL_MAX_BMISS_TIME;
2117
2118 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2119 bmiss_time, 0);
2120 if (ret)
2121 return ret;
2122
2123 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2124 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2125 0, 0, 0, 0);
2126 if (ret)
2127 return ret;
2128 }
2129
2130 ar->state = ATH6KL_STATE_SUSPENDING;
2131
2132 /* Setup own IP addr for ARP agent. */
2133 in_dev = __in_dev_get_rtnl(vif->ndev);
2134 if (!in_dev)
2135 goto skip_arp;
2136
2137 ifa = in_dev->ifa_list;
2138 memset(&ips, 0, sizeof(ips));
2139
2140 /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2141 while (index < MAX_IP_ADDRS && ifa) {
2142 ips[index] = ifa->ifa_local;
2143 ifa = ifa->ifa_next;
2144 index++;
2145 }
2146
2147 if (ifa) {
2148 ath6kl_err("total IP addr count is exceeding fw limit\n");
2149 return -EINVAL;
2150 }
2151
2152 ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2153 if (ret) {
2154 ath6kl_err("fail to setup ip for arp agent\n");
2155 return ret;
2156 }
2157
2158 skip_arp:
2159 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2160 ATH6KL_WOW_MODE_ENABLE,
2161 filter,
2162 WOW_HOST_REQ_DELAY);
2163 if (ret)
2164 return ret;
2165
2166 ret = ath6kl_cfg80211_host_sleep(ar, vif);
2167 if (ret)
2168 return ret;
2169
2170 return 0;
2171 }
2172
2173 static int ath6kl_wow_resume(struct ath6kl *ar)
2174 {
2175 struct ath6kl_vif *vif;
2176 int ret;
2177
2178 vif = ath6kl_vif_first(ar);
2179 if (!vif)
2180 return -EIO;
2181
2182 ar->state = ATH6KL_STATE_RESUMING;
2183
2184 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2185 ATH6KL_HOST_MODE_AWAKE);
2186 if (ret) {
2187 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2188 ret);
2189 ar->state = ATH6KL_STATE_WOW;
2190 return ret;
2191 }
2192
2193 if (vif->nw_type != AP_NETWORK) {
2194 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2195 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2196 if (ret)
2197 return ret;
2198
2199 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2200 vif->listen_intvl_t, 0);
2201 if (ret)
2202 return ret;
2203
2204 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2205 vif->bmiss_time_t, 0);
2206 if (ret)
2207 return ret;
2208 }
2209
2210 ar->state = ATH6KL_STATE_ON;
2211
2212 if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags)) {
2213 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2214 vif->fw_vif_idx, true);
2215 if (ret)
2216 return ret;
2217 }
2218
2219 netif_wake_queue(vif->ndev);
2220
2221 return 0;
2222 }
2223
2224 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2225 {
2226 struct ath6kl_vif *vif;
2227 int ret;
2228
2229 vif = ath6kl_vif_first(ar);
2230 if (!vif)
2231 return -EIO;
2232
2233 if (!test_bit(WMI_READY, &ar->flag)) {
2234 ath6kl_err("deepsleep failed as wmi is not ready\n");
2235 return -EIO;
2236 }
2237
2238 ath6kl_cfg80211_stop_all(ar);
2239
2240 /* Save the current power mode before enabling power save */
2241 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2242
2243 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2244 if (ret)
2245 return ret;
2246
2247 /* Disable WOW mode */
2248 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2249 ATH6KL_WOW_MODE_DISABLE,
2250 0, 0);
2251 if (ret)
2252 return ret;
2253
2254 /* Flush all non control pkts in TX path */
2255 ath6kl_tx_data_cleanup(ar);
2256
2257 ret = ath6kl_cfg80211_host_sleep(ar, vif);
2258 if (ret)
2259 return ret;
2260
2261 return 0;
2262 }
2263
2264 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2265 {
2266 struct ath6kl_vif *vif;
2267 int ret;
2268
2269 vif = ath6kl_vif_first(ar);
2270
2271 if (!vif)
2272 return -EIO;
2273
2274 if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2275 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2276 ar->wmi->saved_pwr_mode);
2277 if (ret)
2278 return ret;
2279 }
2280
2281 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2282 ATH6KL_HOST_MODE_AWAKE);
2283 if (ret)
2284 return ret;
2285
2286 ar->state = ATH6KL_STATE_ON;
2287
2288 /* Reset scan parameter to default values */
2289 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2290 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2291 if (ret)
2292 return ret;
2293
2294 return 0;
2295 }
2296
2297 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2298 enum ath6kl_cfg_suspend_mode mode,
2299 struct cfg80211_wowlan *wow)
2300 {
2301 struct ath6kl_vif *vif;
2302 enum ath6kl_state prev_state;
2303 int ret;
2304
2305 switch (mode) {
2306 case ATH6KL_CFG_SUSPEND_WOW:
2307
2308 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2309
2310 /* Flush all non control pkts in TX path */
2311 ath6kl_tx_data_cleanup(ar);
2312
2313 prev_state = ar->state;
2314
2315 ret = ath6kl_wow_suspend(ar, wow);
2316 if (ret) {
2317 ar->state = prev_state;
2318 return ret;
2319 }
2320
2321 ar->state = ATH6KL_STATE_WOW;
2322 break;
2323
2324 case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2325
2326 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2327
2328 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2329 if (ret) {
2330 ath6kl_err("deepsleep suspend failed: %d\n", ret);
2331 return ret;
2332 }
2333
2334 ar->state = ATH6KL_STATE_DEEPSLEEP;
2335
2336 break;
2337
2338 case ATH6KL_CFG_SUSPEND_CUTPOWER:
2339
2340 ath6kl_cfg80211_stop_all(ar);
2341
2342 if (ar->state == ATH6KL_STATE_OFF) {
2343 ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2344 "suspend hw off, no action for cutpower\n");
2345 break;
2346 }
2347
2348 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2349
2350 ret = ath6kl_init_hw_stop(ar);
2351 if (ret) {
2352 ath6kl_warn("failed to stop hw during suspend: %d\n",
2353 ret);
2354 }
2355
2356 ar->state = ATH6KL_STATE_CUTPOWER;
2357
2358 break;
2359
2360 case ATH6KL_CFG_SUSPEND_SCHED_SCAN:
2361 /*
2362 * Nothing needed for schedule scan, firmware is already in
2363 * wow mode and sleeping most of the time.
2364 */
2365 break;
2366
2367 default:
2368 break;
2369 }
2370
2371 list_for_each_entry(vif, &ar->vif_list, list)
2372 ath6kl_cfg80211_scan_complete_event(vif, true);
2373
2374 return 0;
2375 }
2376 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2377
2378 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2379 {
2380 int ret;
2381
2382 switch (ar->state) {
2383 case ATH6KL_STATE_WOW:
2384 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2385
2386 ret = ath6kl_wow_resume(ar);
2387 if (ret) {
2388 ath6kl_warn("wow mode resume failed: %d\n", ret);
2389 return ret;
2390 }
2391
2392 break;
2393
2394 case ATH6KL_STATE_DEEPSLEEP:
2395 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2396
2397 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2398 if (ret) {
2399 ath6kl_warn("deep sleep resume failed: %d\n", ret);
2400 return ret;
2401 }
2402 break;
2403
2404 case ATH6KL_STATE_CUTPOWER:
2405 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2406
2407 ret = ath6kl_init_hw_start(ar);
2408 if (ret) {
2409 ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2410 return ret;
2411 }
2412 break;
2413
2414 case ATH6KL_STATE_SCHED_SCAN:
2415 break;
2416
2417 default:
2418 break;
2419 }
2420
2421 return 0;
2422 }
2423 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2424
2425 #ifdef CONFIG_PM
2426
2427 /* hif layer decides what suspend mode to use */
2428 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2429 struct cfg80211_wowlan *wow)
2430 {
2431 struct ath6kl *ar = wiphy_priv(wiphy);
2432
2433 return ath6kl_hif_suspend(ar, wow);
2434 }
2435
2436 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2437 {
2438 struct ath6kl *ar = wiphy_priv(wiphy);
2439
2440 return ath6kl_hif_resume(ar);
2441 }
2442
2443 /*
2444 * FIXME: WOW suspend mode is selected if the host sdio controller supports
2445 * both sdio irq wake up and keep power. The target pulls sdio data line to
2446 * wake up the host when WOW pattern matches. This causes sdio irq handler
2447 * is being called in the host side which internally hits ath6kl's RX path.
2448 *
2449 * Since sdio interrupt is not disabled, RX path executes even before
2450 * the host executes the actual resume operation from PM module.
2451 *
2452 * In the current scenario, WOW resume should happen before start processing
2453 * any data from the target. So It's required to perform WOW resume in RX path.
2454 * Ideally we should perform WOW resume only in the actual platform
2455 * resume path. This area needs bit rework to avoid WOW resume in RX path.
2456 *
2457 * ath6kl_check_wow_status() is called from ath6kl_rx().
2458 */
2459 void ath6kl_check_wow_status(struct ath6kl *ar)
2460 {
2461 if (ar->state == ATH6KL_STATE_SUSPENDING)
2462 return;
2463
2464 if (ar->state == ATH6KL_STATE_WOW)
2465 ath6kl_cfg80211_resume(ar);
2466 }
2467
2468 #else
2469
2470 void ath6kl_check_wow_status(struct ath6kl *ar)
2471 {
2472 }
2473 #endif
2474
2475 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum ieee80211_band band,
2476 bool ht_enable)
2477 {
2478 struct ath6kl_htcap *htcap = &vif->htcap;
2479
2480 if (htcap->ht_enable == ht_enable)
2481 return 0;
2482
2483 if (ht_enable) {
2484 /* Set default ht capabilities */
2485 htcap->ht_enable = true;
2486 htcap->cap_info = (band == IEEE80211_BAND_2GHZ) ?
2487 ath6kl_g_htcap : ath6kl_a_htcap;
2488 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2489 } else /* Disable ht */
2490 memset(htcap, 0, sizeof(*htcap));
2491
2492 return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2493 band, htcap);
2494 }
2495
2496 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2497 {
2498 struct wiphy *wiphy = vif->ar->wiphy;
2499 int band, ret = 0;
2500
2501 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2502 if (!wiphy->bands[band])
2503 continue;
2504
2505 ret = ath6kl_set_htcap(vif, band,
2506 wiphy->bands[band]->ht_cap.ht_supported);
2507 if (ret)
2508 return ret;
2509 }
2510
2511 return ret;
2512 }
2513
2514 static bool ath6kl_is_p2p_ie(const u8 *pos)
2515 {
2516 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2517 pos[2] == 0x50 && pos[3] == 0x6f &&
2518 pos[4] == 0x9a && pos[5] == 0x09;
2519 }
2520
2521 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2522 const u8 *ies, size_t ies_len)
2523 {
2524 struct ath6kl *ar = vif->ar;
2525 const u8 *pos;
2526 u8 *buf = NULL;
2527 size_t len = 0;
2528 int ret;
2529
2530 /*
2531 * Filter out P2P IE(s) since they will be included depending on
2532 * the Probe Request frame in ath6kl_send_go_probe_resp().
2533 */
2534
2535 if (ies && ies_len) {
2536 buf = kmalloc(ies_len, GFP_KERNEL);
2537 if (buf == NULL)
2538 return -ENOMEM;
2539 pos = ies;
2540 while (pos + 1 < ies + ies_len) {
2541 if (pos + 2 + pos[1] > ies + ies_len)
2542 break;
2543 if (!ath6kl_is_p2p_ie(pos)) {
2544 memcpy(buf + len, pos, 2 + pos[1]);
2545 len += 2 + pos[1];
2546 }
2547 pos += 2 + pos[1];
2548 }
2549 }
2550
2551 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2552 WMI_FRAME_PROBE_RESP, buf, len);
2553 kfree(buf);
2554 return ret;
2555 }
2556
2557 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2558 struct cfg80211_beacon_data *info)
2559 {
2560 struct ath6kl *ar = vif->ar;
2561 int res;
2562
2563 /* this also clears IE in fw if it's not set */
2564 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2565 WMI_FRAME_BEACON,
2566 info->beacon_ies,
2567 info->beacon_ies_len);
2568 if (res)
2569 return res;
2570
2571 /* this also clears IE in fw if it's not set */
2572 res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2573 info->proberesp_ies_len);
2574 if (res)
2575 return res;
2576
2577 /* this also clears IE in fw if it's not set */
2578 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2579 WMI_FRAME_ASSOC_RESP,
2580 info->assocresp_ies,
2581 info->assocresp_ies_len);
2582 if (res)
2583 return res;
2584
2585 return 0;
2586 }
2587
2588 static int ath6kl_set_channel(struct wiphy *wiphy, struct net_device *dev,
2589 struct ieee80211_channel *chan,
2590 enum nl80211_channel_type channel_type)
2591 {
2592 struct ath6kl_vif *vif;
2593
2594 /*
2595 * 'dev' could be NULL if a channel change is required for the hardware
2596 * device itself, instead of a particular VIF.
2597 *
2598 * FIXME: To be handled properly when monitor mode is supported.
2599 */
2600 if (!dev)
2601 return -EBUSY;
2602
2603 vif = netdev_priv(dev);
2604
2605 if (!ath6kl_cfg80211_ready(vif))
2606 return -EIO;
2607
2608 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: center_freq=%u hw_value=%u\n",
2609 __func__, chan->center_freq, chan->hw_value);
2610 vif->next_chan = chan->center_freq;
2611 vif->next_ch_type = channel_type;
2612 vif->next_ch_band = chan->band;
2613
2614 return 0;
2615 }
2616
2617 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2618 u8 *rsn_capab)
2619 {
2620 const u8 *rsn_ie;
2621 size_t rsn_ie_len;
2622 u16 cnt;
2623
2624 if (!beacon->tail)
2625 return -EINVAL;
2626
2627 rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2628 if (!rsn_ie)
2629 return -EINVAL;
2630
2631 rsn_ie_len = *(rsn_ie + 1);
2632 /* skip element id and length */
2633 rsn_ie += 2;
2634
2635 /* skip version */
2636 if (rsn_ie_len < 2)
2637 return -EINVAL;
2638 rsn_ie += 2;
2639 rsn_ie_len -= 2;
2640
2641 /* skip group cipher suite */
2642 if (rsn_ie_len < 4)
2643 return 0;
2644 rsn_ie += 4;
2645 rsn_ie_len -= 4;
2646
2647 /* skip pairwise cipher suite */
2648 if (rsn_ie_len < 2)
2649 return 0;
2650 cnt = get_unaligned_le16(rsn_ie);
2651 rsn_ie += (2 + cnt * 4);
2652 rsn_ie_len -= (2 + cnt * 4);
2653
2654 /* skip akm suite */
2655 if (rsn_ie_len < 2)
2656 return 0;
2657 cnt = get_unaligned_le16(rsn_ie);
2658 rsn_ie += (2 + cnt * 4);
2659 rsn_ie_len -= (2 + cnt * 4);
2660
2661 if (rsn_ie_len < 2)
2662 return 0;
2663
2664 memcpy(rsn_capab, rsn_ie, 2);
2665
2666 return 0;
2667 }
2668
2669 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2670 struct cfg80211_ap_settings *info)
2671 {
2672 struct ath6kl *ar = ath6kl_priv(dev);
2673 struct ath6kl_vif *vif = netdev_priv(dev);
2674 struct ieee80211_mgmt *mgmt;
2675 bool hidden = false;
2676 u8 *ies;
2677 int ies_len;
2678 struct wmi_connect_cmd p;
2679 int res;
2680 int i, ret;
2681 u16 rsn_capab = 0;
2682
2683 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2684
2685 if (!ath6kl_cfg80211_ready(vif))
2686 return -EIO;
2687
2688 if (vif->next_mode != AP_NETWORK)
2689 return -EOPNOTSUPP;
2690
2691 res = ath6kl_set_ies(vif, &info->beacon);
2692
2693 ar->ap_mode_bkey.valid = false;
2694
2695 /* TODO:
2696 * info->interval
2697 * info->dtim_period
2698 */
2699
2700 if (info->beacon.head == NULL)
2701 return -EINVAL;
2702 mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2703 ies = mgmt->u.beacon.variable;
2704 if (ies > info->beacon.head + info->beacon.head_len)
2705 return -EINVAL;
2706 ies_len = info->beacon.head + info->beacon.head_len - ies;
2707
2708 if (info->ssid == NULL)
2709 return -EINVAL;
2710 memcpy(vif->ssid, info->ssid, info->ssid_len);
2711 vif->ssid_len = info->ssid_len;
2712 if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2713 hidden = true;
2714
2715 res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2716 if (res)
2717 return res;
2718
2719 ret = ath6kl_set_auth_type(vif, info->auth_type);
2720 if (ret)
2721 return ret;
2722
2723 memset(&p, 0, sizeof(p));
2724
2725 for (i = 0; i < info->crypto.n_akm_suites; i++) {
2726 switch (info->crypto.akm_suites[i]) {
2727 case WLAN_AKM_SUITE_8021X:
2728 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2729 p.auth_mode |= WPA_AUTH;
2730 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2731 p.auth_mode |= WPA2_AUTH;
2732 break;
2733 case WLAN_AKM_SUITE_PSK:
2734 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2735 p.auth_mode |= WPA_PSK_AUTH;
2736 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2737 p.auth_mode |= WPA2_PSK_AUTH;
2738 break;
2739 }
2740 }
2741 if (p.auth_mode == 0)
2742 p.auth_mode = NONE_AUTH;
2743 vif->auth_mode = p.auth_mode;
2744
2745 for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2746 switch (info->crypto.ciphers_pairwise[i]) {
2747 case WLAN_CIPHER_SUITE_WEP40:
2748 case WLAN_CIPHER_SUITE_WEP104:
2749 p.prwise_crypto_type |= WEP_CRYPT;
2750 break;
2751 case WLAN_CIPHER_SUITE_TKIP:
2752 p.prwise_crypto_type |= TKIP_CRYPT;
2753 break;
2754 case WLAN_CIPHER_SUITE_CCMP:
2755 p.prwise_crypto_type |= AES_CRYPT;
2756 break;
2757 case WLAN_CIPHER_SUITE_SMS4:
2758 p.prwise_crypto_type |= WAPI_CRYPT;
2759 break;
2760 }
2761 }
2762 if (p.prwise_crypto_type == 0) {
2763 p.prwise_crypto_type = NONE_CRYPT;
2764 ath6kl_set_cipher(vif, 0, true);
2765 } else if (info->crypto.n_ciphers_pairwise == 1)
2766 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2767
2768 switch (info->crypto.cipher_group) {
2769 case WLAN_CIPHER_SUITE_WEP40:
2770 case WLAN_CIPHER_SUITE_WEP104:
2771 p.grp_crypto_type = WEP_CRYPT;
2772 break;
2773 case WLAN_CIPHER_SUITE_TKIP:
2774 p.grp_crypto_type = TKIP_CRYPT;
2775 break;
2776 case WLAN_CIPHER_SUITE_CCMP:
2777 p.grp_crypto_type = AES_CRYPT;
2778 break;
2779 case WLAN_CIPHER_SUITE_SMS4:
2780 p.grp_crypto_type = WAPI_CRYPT;
2781 break;
2782 default:
2783 p.grp_crypto_type = NONE_CRYPT;
2784 break;
2785 }
2786 ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2787
2788 p.nw_type = AP_NETWORK;
2789 vif->nw_type = vif->next_mode;
2790
2791 p.ssid_len = vif->ssid_len;
2792 memcpy(p.ssid, vif->ssid, vif->ssid_len);
2793 p.dot11_auth_mode = vif->dot11_auth_mode;
2794 p.ch = cpu_to_le16(vif->next_chan);
2795
2796 /* Enable uAPSD support by default */
2797 res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2798 if (res < 0)
2799 return res;
2800
2801 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2802 p.nw_subtype = SUBTYPE_P2PGO;
2803 } else {
2804 /*
2805 * Due to firmware limitation, it is not possible to
2806 * do P2P mgmt operations in AP mode
2807 */
2808 p.nw_subtype = SUBTYPE_NONE;
2809 }
2810
2811 if (info->inactivity_timeout) {
2812 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2813 info->inactivity_timeout);
2814 if (res < 0)
2815 return res;
2816 }
2817
2818 if (ath6kl_set_htcap(vif, vif->next_ch_band,
2819 vif->next_ch_type != NL80211_CHAN_NO_HT))
2820 return -EIO;
2821
2822 /*
2823 * Get the PTKSA replay counter in the RSN IE. Supplicant
2824 * will use the RSN IE in M3 message and firmware has to
2825 * advertise the same in beacon/probe response. Send
2826 * the complete RSN IE capability field to firmware
2827 */
2828 if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2829 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2830 ar->fw_capabilities)) {
2831 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2832 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2833 (const u8 *) &rsn_capab,
2834 sizeof(rsn_capab));
2835 if (res < 0)
2836 return res;
2837 }
2838
2839 memcpy(&vif->profile, &p, sizeof(p));
2840 res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2841 if (res < 0)
2842 return res;
2843
2844 return 0;
2845 }
2846
2847 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2848 struct cfg80211_beacon_data *beacon)
2849 {
2850 struct ath6kl_vif *vif = netdev_priv(dev);
2851
2852 if (!ath6kl_cfg80211_ready(vif))
2853 return -EIO;
2854
2855 if (vif->next_mode != AP_NETWORK)
2856 return -EOPNOTSUPP;
2857
2858 return ath6kl_set_ies(vif, beacon);
2859 }
2860
2861 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2862 {
2863 struct ath6kl *ar = ath6kl_priv(dev);
2864 struct ath6kl_vif *vif = netdev_priv(dev);
2865
2866 if (vif->nw_type != AP_NETWORK)
2867 return -EOPNOTSUPP;
2868 if (!test_bit(CONNECTED, &vif->flags))
2869 return -ENOTCONN;
2870
2871 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2872 clear_bit(CONNECTED, &vif->flags);
2873
2874 /* Restore ht setting in firmware */
2875 return ath6kl_restore_htcap(vif);
2876 }
2877
2878 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2879
2880 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2881 u8 *mac)
2882 {
2883 struct ath6kl *ar = ath6kl_priv(dev);
2884 struct ath6kl_vif *vif = netdev_priv(dev);
2885 const u8 *addr = mac ? mac : bcast_addr;
2886
2887 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2888 addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2889 }
2890
2891 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
2892 u8 *mac, struct station_parameters *params)
2893 {
2894 struct ath6kl *ar = ath6kl_priv(dev);
2895 struct ath6kl_vif *vif = netdev_priv(dev);
2896
2897 if (vif->nw_type != AP_NETWORK)
2898 return -EOPNOTSUPP;
2899
2900 /* Use this only for authorizing/unauthorizing a station */
2901 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
2902 return -EOPNOTSUPP;
2903
2904 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
2905 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
2906 WMI_AP_MLME_AUTHORIZE, mac, 0);
2907 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
2908 WMI_AP_MLME_UNAUTHORIZE, mac, 0);
2909 }
2910
2911 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
2912 struct net_device *dev,
2913 struct ieee80211_channel *chan,
2914 enum nl80211_channel_type channel_type,
2915 unsigned int duration,
2916 u64 *cookie)
2917 {
2918 struct ath6kl *ar = ath6kl_priv(dev);
2919 struct ath6kl_vif *vif = netdev_priv(dev);
2920 u32 id;
2921
2922 /* TODO: if already pending or ongoing remain-on-channel,
2923 * return -EBUSY */
2924 id = ++vif->last_roc_id;
2925 if (id == 0) {
2926 /* Do not use 0 as the cookie value */
2927 id = ++vif->last_roc_id;
2928 }
2929 *cookie = id;
2930
2931 return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
2932 chan->center_freq, duration);
2933 }
2934
2935 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
2936 struct net_device *dev,
2937 u64 cookie)
2938 {
2939 struct ath6kl *ar = ath6kl_priv(dev);
2940 struct ath6kl_vif *vif = netdev_priv(dev);
2941
2942 if (cookie != vif->last_roc_id)
2943 return -ENOENT;
2944 vif->last_cancel_roc_id = cookie;
2945
2946 return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
2947 }
2948
2949 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
2950 const u8 *buf, size_t len,
2951 unsigned int freq)
2952 {
2953 struct ath6kl *ar = vif->ar;
2954 const u8 *pos;
2955 u8 *p2p;
2956 int p2p_len;
2957 int ret;
2958 const struct ieee80211_mgmt *mgmt;
2959
2960 mgmt = (const struct ieee80211_mgmt *) buf;
2961
2962 /* Include P2P IE(s) from the frame generated in user space. */
2963
2964 p2p = kmalloc(len, GFP_KERNEL);
2965 if (p2p == NULL)
2966 return -ENOMEM;
2967 p2p_len = 0;
2968
2969 pos = mgmt->u.probe_resp.variable;
2970 while (pos + 1 < buf + len) {
2971 if (pos + 2 + pos[1] > buf + len)
2972 break;
2973 if (ath6kl_is_p2p_ie(pos)) {
2974 memcpy(p2p + p2p_len, pos, 2 + pos[1]);
2975 p2p_len += 2 + pos[1];
2976 }
2977 pos += 2 + pos[1];
2978 }
2979
2980 ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
2981 mgmt->da, p2p, p2p_len);
2982 kfree(p2p);
2983 return ret;
2984 }
2985
2986 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
2987 u32 id,
2988 u32 freq,
2989 u32 wait,
2990 const u8 *buf,
2991 size_t len,
2992 bool *more_data,
2993 bool no_cck)
2994 {
2995 struct ieee80211_mgmt *mgmt;
2996 struct ath6kl_sta *conn;
2997 bool is_psq_empty = false;
2998 struct ath6kl_mgmt_buff *mgmt_buf;
2999 size_t mgmt_buf_size;
3000 struct ath6kl *ar = vif->ar;
3001
3002 mgmt = (struct ieee80211_mgmt *) buf;
3003 if (is_multicast_ether_addr(mgmt->da))
3004 return false;
3005
3006 conn = ath6kl_find_sta(vif, mgmt->da);
3007 if (!conn)
3008 return false;
3009
3010 if (conn->sta_flags & STA_PS_SLEEP) {
3011 if (!(conn->sta_flags & STA_PS_POLLED)) {
3012 /* Queue the frames if the STA is sleeping */
3013 mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3014 mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3015 if (!mgmt_buf)
3016 return false;
3017
3018 INIT_LIST_HEAD(&mgmt_buf->list);
3019 mgmt_buf->id = id;
3020 mgmt_buf->freq = freq;
3021 mgmt_buf->wait = wait;
3022 mgmt_buf->len = len;
3023 mgmt_buf->no_cck = no_cck;
3024 memcpy(mgmt_buf->buf, buf, len);
3025 spin_lock_bh(&conn->psq_lock);
3026 is_psq_empty = skb_queue_empty(&conn->psq) &&
3027 (conn->mgmt_psq_len == 0);
3028 list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3029 conn->mgmt_psq_len++;
3030 spin_unlock_bh(&conn->psq_lock);
3031
3032 /*
3033 * If this is the first pkt getting queued
3034 * for this STA, update the PVB for this
3035 * STA.
3036 */
3037 if (is_psq_empty)
3038 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3039 conn->aid, 1);
3040 return true;
3041 }
3042
3043 /*
3044 * This tx is because of a PsPoll.
3045 * Determine if MoreData bit has to be set.
3046 */
3047 spin_lock_bh(&conn->psq_lock);
3048 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3049 *more_data = true;
3050 spin_unlock_bh(&conn->psq_lock);
3051 }
3052
3053 return false;
3054 }
3055
3056 /* Check if SSID length is greater than DIRECT- */
3057 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3058 {
3059 const struct ieee80211_mgmt *mgmt;
3060 mgmt = (const struct ieee80211_mgmt *) buf;
3061
3062 /* variable[1] contains the SSID tag length */
3063 if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3064 (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3065 return true;
3066 }
3067
3068 return false;
3069 }
3070
3071 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
3072 struct ieee80211_channel *chan, bool offchan,
3073 enum nl80211_channel_type channel_type,
3074 bool channel_type_valid, unsigned int wait,
3075 const u8 *buf, size_t len, bool no_cck,
3076 bool dont_wait_for_ack, u64 *cookie)
3077 {
3078 struct ath6kl *ar = ath6kl_priv(dev);
3079 struct ath6kl_vif *vif = netdev_priv(dev);
3080 u32 id;
3081 const struct ieee80211_mgmt *mgmt;
3082 bool more_data, queued;
3083
3084 mgmt = (const struct ieee80211_mgmt *) buf;
3085 if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3086 ieee80211_is_probe_resp(mgmt->frame_control) &&
3087 ath6kl_is_p2p_go_ssid(buf, len)) {
3088 /*
3089 * Send Probe Response frame in GO mode using a separate WMI
3090 * command to allow the target to fill in the generic IEs.
3091 */
3092 *cookie = 0; /* TX status not supported */
3093 return ath6kl_send_go_probe_resp(vif, buf, len,
3094 chan->center_freq);
3095 }
3096
3097 id = vif->send_action_id++;
3098 if (id == 0) {
3099 /*
3100 * 0 is a reserved value in the WMI command and shall not be
3101 * used for the command.
3102 */
3103 id = vif->send_action_id++;
3104 }
3105
3106 *cookie = id;
3107
3108 /* AP mode Power saving processing */
3109 if (vif->nw_type == AP_NETWORK) {
3110 queued = ath6kl_mgmt_powersave_ap(vif,
3111 id, chan->center_freq,
3112 wait, buf,
3113 len, &more_data, no_cck);
3114 if (queued)
3115 return 0;
3116 }
3117
3118 return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id,
3119 chan->center_freq, wait,
3120 buf, len, no_cck);
3121 }
3122
3123 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3124 struct net_device *dev,
3125 u16 frame_type, bool reg)
3126 {
3127 struct ath6kl_vif *vif = netdev_priv(dev);
3128
3129 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3130 __func__, frame_type, reg);
3131 if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3132 /*
3133 * Note: This notification callback is not allowed to sleep, so
3134 * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3135 * hardcode target to report Probe Request frames all the time.
3136 */
3137 vif->probe_req_report = reg;
3138 }
3139 }
3140
3141 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3142 struct net_device *dev,
3143 struct cfg80211_sched_scan_request *request)
3144 {
3145 struct ath6kl *ar = ath6kl_priv(dev);
3146 struct ath6kl_vif *vif = netdev_priv(dev);
3147 u16 interval;
3148 int ret;
3149
3150 if (ar->state != ATH6KL_STATE_ON)
3151 return -EIO;
3152
3153 if (vif->sme_state != SME_DISCONNECTED)
3154 return -EBUSY;
3155
3156 /* The FW currently can't support multi-vif WoW properly. */
3157 if (ar->num_vif > 1)
3158 return -EIO;
3159
3160 ath6kl_cfg80211_scan_complete_event(vif, true);
3161
3162 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3163 request->n_ssids);
3164 if (ret < 0)
3165 return ret;
3166
3167 /* fw uses seconds, also make sure that it's >0 */
3168 interval = max_t(u16, 1, request->interval / 1000);
3169
3170 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3171 interval, interval,
3172 vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3173
3174 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
3175 ATH6KL_WOW_MODE_ENABLE,
3176 WOW_FILTER_SSID,
3177 WOW_HOST_REQ_DELAY);
3178 if (ret) {
3179 ath6kl_warn("Failed to enable wow with ssid filter: %d\n", ret);
3180 return ret;
3181 }
3182
3183 /* this also clears IE in fw if it's not set */
3184 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3185 WMI_FRAME_PROBE_REQ,
3186 request->ie, request->ie_len);
3187 if (ret) {
3188 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d",
3189 ret);
3190 return ret;
3191 }
3192
3193 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
3194 ATH6KL_HOST_MODE_ASLEEP);
3195 if (ret) {
3196 ath6kl_warn("Failed to enable host sleep mode for sched scan: %d\n",
3197 ret);
3198 return ret;
3199 }
3200
3201 ar->state = ATH6KL_STATE_SCHED_SCAN;
3202
3203 return ret;
3204 }
3205
3206 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3207 struct net_device *dev)
3208 {
3209 struct ath6kl_vif *vif = netdev_priv(dev);
3210 bool stopped;
3211
3212 stopped = __ath6kl_cfg80211_sscan_stop(vif);
3213
3214 if (!stopped)
3215 return -EIO;
3216
3217 return 0;
3218 }
3219
3220 static const struct ieee80211_txrx_stypes
3221 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3222 [NL80211_IFTYPE_STATION] = {
3223 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3224 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3225 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3226 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3227 },
3228 [NL80211_IFTYPE_AP] = {
3229 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3230 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3231 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3232 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3233 },
3234 [NL80211_IFTYPE_P2P_CLIENT] = {
3235 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3236 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3237 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3238 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3239 },
3240 [NL80211_IFTYPE_P2P_GO] = {
3241 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3242 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3243 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3244 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3245 },
3246 };
3247
3248 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3249 .add_virtual_intf = ath6kl_cfg80211_add_iface,
3250 .del_virtual_intf = ath6kl_cfg80211_del_iface,
3251 .change_virtual_intf = ath6kl_cfg80211_change_iface,
3252 .scan = ath6kl_cfg80211_scan,
3253 .connect = ath6kl_cfg80211_connect,
3254 .disconnect = ath6kl_cfg80211_disconnect,
3255 .add_key = ath6kl_cfg80211_add_key,
3256 .get_key = ath6kl_cfg80211_get_key,
3257 .del_key = ath6kl_cfg80211_del_key,
3258 .set_default_key = ath6kl_cfg80211_set_default_key,
3259 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3260 .set_tx_power = ath6kl_cfg80211_set_txpower,
3261 .get_tx_power = ath6kl_cfg80211_get_txpower,
3262 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3263 .join_ibss = ath6kl_cfg80211_join_ibss,
3264 .leave_ibss = ath6kl_cfg80211_leave_ibss,
3265 .get_station = ath6kl_get_station,
3266 .set_pmksa = ath6kl_set_pmksa,
3267 .del_pmksa = ath6kl_del_pmksa,
3268 .flush_pmksa = ath6kl_flush_pmksa,
3269 CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3270 #ifdef CONFIG_PM
3271 .suspend = __ath6kl_cfg80211_suspend,
3272 .resume = __ath6kl_cfg80211_resume,
3273 #endif
3274 .set_channel = ath6kl_set_channel,
3275 .start_ap = ath6kl_start_ap,
3276 .change_beacon = ath6kl_change_beacon,
3277 .stop_ap = ath6kl_stop_ap,
3278 .del_station = ath6kl_del_station,
3279 .change_station = ath6kl_change_station,
3280 .remain_on_channel = ath6kl_remain_on_channel,
3281 .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3282 .mgmt_tx = ath6kl_mgmt_tx,
3283 .mgmt_frame_register = ath6kl_mgmt_frame_register,
3284 .sched_scan_start = ath6kl_cfg80211_sscan_start,
3285 .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3286 };
3287
3288 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3289 {
3290 ath6kl_cfg80211_sscan_disable(vif);
3291
3292 switch (vif->sme_state) {
3293 case SME_DISCONNECTED:
3294 break;
3295 case SME_CONNECTING:
3296 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3297 NULL, 0,
3298 WLAN_STATUS_UNSPECIFIED_FAILURE,
3299 GFP_KERNEL);
3300 break;
3301 case SME_CONNECTED:
3302 cfg80211_disconnected(vif->ndev, 0, NULL, 0, GFP_KERNEL);
3303 break;
3304 }
3305
3306 if (test_bit(CONNECTED, &vif->flags) ||
3307 test_bit(CONNECT_PEND, &vif->flags))
3308 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3309
3310 vif->sme_state = SME_DISCONNECTED;
3311 clear_bit(CONNECTED, &vif->flags);
3312 clear_bit(CONNECT_PEND, &vif->flags);
3313
3314 /* disable scanning */
3315 if (ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3316 0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3317 ath6kl_warn("failed to disable scan during stop\n");
3318
3319 ath6kl_cfg80211_scan_complete_event(vif, true);
3320 }
3321
3322 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3323 {
3324 struct ath6kl_vif *vif;
3325
3326 vif = ath6kl_vif_first(ar);
3327 if (!vif) {
3328 /* save the current power mode before enabling power save */
3329 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3330
3331 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3332 ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3333 return;
3334 }
3335
3336 /*
3337 * FIXME: we should take ar->list_lock to protect changes in the
3338 * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3339 * sleeps.
3340 */
3341 list_for_each_entry(vif, &ar->vif_list, list)
3342 ath6kl_cfg80211_stop(vif);
3343 }
3344
3345 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3346 {
3347 vif->aggr_cntxt = aggr_init(vif);
3348 if (!vif->aggr_cntxt) {
3349 ath6kl_err("failed to initialize aggr\n");
3350 return -ENOMEM;
3351 }
3352
3353 setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3354 (unsigned long) vif->ndev);
3355 setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3356 (unsigned long) vif);
3357
3358 set_bit(WMM_ENABLED, &vif->flags);
3359 spin_lock_init(&vif->if_lock);
3360
3361 INIT_LIST_HEAD(&vif->mc_filter);
3362
3363 return 0;
3364 }
3365
3366 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3367 {
3368 struct ath6kl *ar = vif->ar;
3369 struct ath6kl_mc_filter *mc_filter, *tmp;
3370
3371 aggr_module_destroy(vif->aggr_cntxt);
3372
3373 ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3374
3375 if (vif->nw_type == ADHOC_NETWORK)
3376 ar->ibss_if_active = false;
3377
3378 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3379 list_del(&mc_filter->list);
3380 kfree(mc_filter);
3381 }
3382
3383 unregister_netdevice(vif->ndev);
3384
3385 ar->num_vif--;
3386 }
3387
3388 struct net_device *ath6kl_interface_add(struct ath6kl *ar, char *name,
3389 enum nl80211_iftype type, u8 fw_vif_idx,
3390 u8 nw_type)
3391 {
3392 struct net_device *ndev;
3393 struct ath6kl_vif *vif;
3394
3395 ndev = alloc_netdev(sizeof(*vif), name, ether_setup);
3396 if (!ndev)
3397 return NULL;
3398
3399 vif = netdev_priv(ndev);
3400 ndev->ieee80211_ptr = &vif->wdev;
3401 vif->wdev.wiphy = ar->wiphy;
3402 vif->ar = ar;
3403 vif->ndev = ndev;
3404 SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3405 vif->wdev.netdev = ndev;
3406 vif->wdev.iftype = type;
3407 vif->fw_vif_idx = fw_vif_idx;
3408 vif->nw_type = nw_type;
3409 vif->next_mode = nw_type;
3410 vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3411 vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3412 vif->bg_scan_period = 0;
3413 vif->htcap.ht_enable = true;
3414
3415 memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3416 if (fw_vif_idx != 0)
3417 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3418 0x2;
3419
3420 init_netdev(ndev);
3421
3422 ath6kl_init_control_info(vif);
3423
3424 if (ath6kl_cfg80211_vif_init(vif))
3425 goto err;
3426
3427 if (register_netdevice(ndev))
3428 goto err;
3429
3430 ar->avail_idx_map &= ~BIT(fw_vif_idx);
3431 vif->sme_state = SME_DISCONNECTED;
3432 set_bit(WLAN_ENABLED, &vif->flags);
3433 ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3434 set_bit(NETDEV_REGISTERED, &vif->flags);
3435
3436 if (type == NL80211_IFTYPE_ADHOC)
3437 ar->ibss_if_active = true;
3438
3439 spin_lock_bh(&ar->list_lock);
3440 list_add_tail(&vif->list, &ar->vif_list);
3441 spin_unlock_bh(&ar->list_lock);
3442
3443 return ndev;
3444
3445 err:
3446 aggr_module_destroy(vif->aggr_cntxt);
3447 free_netdev(ndev);
3448 return NULL;
3449 }
3450
3451 int ath6kl_cfg80211_init(struct ath6kl *ar)
3452 {
3453 struct wiphy *wiphy = ar->wiphy;
3454 bool band_2gig = false, band_5gig = false, ht = false;
3455 int ret;
3456
3457 wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3458
3459 wiphy->max_remain_on_channel_duration = 5000;
3460
3461 /* set device pointer for wiphy */
3462 set_wiphy_dev(wiphy, ar->dev);
3463
3464 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3465 BIT(NL80211_IFTYPE_ADHOC) |
3466 BIT(NL80211_IFTYPE_AP);
3467 if (ar->p2p) {
3468 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3469 BIT(NL80211_IFTYPE_P2P_CLIENT);
3470 }
3471
3472 /* max num of ssids that can be probed during scanning */
3473 wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3474 wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3475 switch (ar->hw.cap) {
3476 case WMI_11AN_CAP:
3477 ht = true;
3478 case WMI_11A_CAP:
3479 band_5gig = true;
3480 break;
3481 case WMI_11GN_CAP:
3482 ht = true;
3483 case WMI_11G_CAP:
3484 band_2gig = true;
3485 break;
3486 case WMI_11AGN_CAP:
3487 ht = true;
3488 case WMI_11AG_CAP:
3489 band_2gig = true;
3490 band_5gig = true;
3491 break;
3492 default:
3493 ath6kl_err("invalid phy capability!\n");
3494 return -EINVAL;
3495 }
3496
3497 /*
3498 * Even if the fw has HT support, advertise HT cap only when
3499 * the firmware has support to override RSN capability, otherwise
3500 * 4-way handshake would fail.
3501 */
3502 if (!(ht &&
3503 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3504 ar->fw_capabilities))) {
3505 ath6kl_band_2ghz.ht_cap.cap = 0;
3506 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3507 ath6kl_band_5ghz.ht_cap.cap = 0;
3508 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3509 }
3510 if (band_2gig)
3511 wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3512 if (band_5gig)
3513 wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3514
3515 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3516
3517 wiphy->cipher_suites = cipher_suites;
3518 wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3519
3520 wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
3521 WIPHY_WOWLAN_DISCONNECT |
3522 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
3523 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
3524 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
3525 WIPHY_WOWLAN_4WAY_HANDSHAKE;
3526 wiphy->wowlan.n_patterns = WOW_MAX_FILTERS_PER_LIST;
3527 wiphy->wowlan.pattern_min_len = 1;
3528 wiphy->wowlan.pattern_max_len = WOW_PATTERN_SIZE;
3529
3530 wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3531
3532 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3533 WIPHY_FLAG_HAVE_AP_SME |
3534 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3535 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3536
3537 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN, ar->fw_capabilities))
3538 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
3539
3540 if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3541 ar->fw_capabilities))
3542 ar->wiphy->features = NL80211_FEATURE_INACTIVITY_TIMER;
3543
3544 ar->wiphy->probe_resp_offload =
3545 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3546 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3547 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3548
3549 ret = wiphy_register(wiphy);
3550 if (ret < 0) {
3551 ath6kl_err("couldn't register wiphy device\n");
3552 return ret;
3553 }
3554
3555 ar->wiphy_registered = true;
3556
3557 return 0;
3558 }
3559
3560 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
3561 {
3562 wiphy_unregister(ar->wiphy);
3563
3564 ar->wiphy_registered = false;
3565 }
3566
3567 struct ath6kl *ath6kl_cfg80211_create(void)
3568 {
3569 struct ath6kl *ar;
3570 struct wiphy *wiphy;
3571
3572 /* create a new wiphy for use with cfg80211 */
3573 wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
3574
3575 if (!wiphy) {
3576 ath6kl_err("couldn't allocate wiphy device\n");
3577 return NULL;
3578 }
3579
3580 ar = wiphy_priv(wiphy);
3581 ar->wiphy = wiphy;
3582
3583 return ar;
3584 }
3585
3586 /* Note: ar variable must not be accessed after calling this! */
3587 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
3588 {
3589 int i;
3590
3591 for (i = 0; i < AP_MAX_NUM_STA; i++)
3592 kfree(ar->sta_list[i].aggr_conn);
3593
3594 wiphy_free(ar->wiphy);
3595 }
3596
Linux kernel - Deliverables
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