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Merge branch 'clk-fixes' into clk-next
[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 struct ath6kl_cfg80211_match_probe_ssid {
57 struct cfg80211_ssid ssid;
58 u8 flag;
59 };
60
61 static struct ieee80211_rate ath6kl_rates[] = {
62 RATETAB_ENT(10, 0x1, 0),
63 RATETAB_ENT(20, 0x2, 0),
64 RATETAB_ENT(55, 0x4, 0),
65 RATETAB_ENT(110, 0x8, 0),
66 RATETAB_ENT(60, 0x10, 0),
67 RATETAB_ENT(90, 0x20, 0),
68 RATETAB_ENT(120, 0x40, 0),
69 RATETAB_ENT(180, 0x80, 0),
70 RATETAB_ENT(240, 0x100, 0),
71 RATETAB_ENT(360, 0x200, 0),
72 RATETAB_ENT(480, 0x400, 0),
73 RATETAB_ENT(540, 0x800, 0),
74 };
75
76 #define ath6kl_a_rates (ath6kl_rates + 4)
77 #define ath6kl_a_rates_size 8
78 #define ath6kl_g_rates (ath6kl_rates + 0)
79 #define ath6kl_g_rates_size 12
80
81 #define ath6kl_g_htcap IEEE80211_HT_CAP_SGI_20
82 #define ath6kl_a_htcap (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \
83 IEEE80211_HT_CAP_SGI_20 | \
84 IEEE80211_HT_CAP_SGI_40)
85
86 static struct ieee80211_channel ath6kl_2ghz_channels[] = {
87 CHAN2G(1, 2412, 0),
88 CHAN2G(2, 2417, 0),
89 CHAN2G(3, 2422, 0),
90 CHAN2G(4, 2427, 0),
91 CHAN2G(5, 2432, 0),
92 CHAN2G(6, 2437, 0),
93 CHAN2G(7, 2442, 0),
94 CHAN2G(8, 2447, 0),
95 CHAN2G(9, 2452, 0),
96 CHAN2G(10, 2457, 0),
97 CHAN2G(11, 2462, 0),
98 CHAN2G(12, 2467, 0),
99 CHAN2G(13, 2472, 0),
100 CHAN2G(14, 2484, 0),
101 };
102
103 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = {
104 CHAN5G(34, 0), CHAN5G(36, 0),
105 CHAN5G(38, 0), CHAN5G(40, 0),
106 CHAN5G(42, 0), CHAN5G(44, 0),
107 CHAN5G(46, 0), CHAN5G(48, 0),
108 CHAN5G(52, 0), CHAN5G(56, 0),
109 CHAN5G(60, 0), CHAN5G(64, 0),
110 CHAN5G(100, 0), CHAN5G(104, 0),
111 CHAN5G(108, 0), CHAN5G(112, 0),
112 CHAN5G(116, 0), CHAN5G(120, 0),
113 CHAN5G(124, 0), CHAN5G(128, 0),
114 CHAN5G(132, 0), CHAN5G(136, 0),
115 CHAN5G(140, 0), CHAN5G(149, 0),
116 CHAN5G(153, 0), CHAN5G(157, 0),
117 CHAN5G(161, 0), CHAN5G(165, 0),
118 CHAN5G(184, 0), CHAN5G(188, 0),
119 CHAN5G(192, 0), CHAN5G(196, 0),
120 CHAN5G(200, 0), CHAN5G(204, 0),
121 CHAN5G(208, 0), CHAN5G(212, 0),
122 CHAN5G(216, 0),
123 };
124
125 static struct ieee80211_supported_band ath6kl_band_2ghz = {
126 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels),
127 .channels = ath6kl_2ghz_channels,
128 .n_bitrates = ath6kl_g_rates_size,
129 .bitrates = ath6kl_g_rates,
130 .ht_cap.cap = ath6kl_g_htcap,
131 .ht_cap.ht_supported = true,
132 };
133
134 static struct ieee80211_supported_band ath6kl_band_5ghz = {
135 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels),
136 .channels = ath6kl_5ghz_a_channels,
137 .n_bitrates = ath6kl_a_rates_size,
138 .bitrates = ath6kl_a_rates,
139 .ht_cap.cap = ath6kl_a_htcap,
140 .ht_cap.ht_supported = true,
141 };
142
143 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */
144
145 /* returns true if scheduled scan was stopped */
146 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif)
147 {
148 struct ath6kl *ar = vif->ar;
149
150 if (!test_and_clear_bit(SCHED_SCANNING, &vif->flags))
151 return false;
152
153 del_timer_sync(&vif->sched_scan_timer);
154
155 if (ar->state == ATH6KL_STATE_RECOVERY)
156 return true;
157
158 ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, false);
159
160 return true;
161 }
162
163 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif)
164 {
165 struct ath6kl *ar = vif->ar;
166 bool stopped;
167
168 stopped = __ath6kl_cfg80211_sscan_stop(vif);
169
170 if (!stopped)
171 return;
172
173 cfg80211_sched_scan_stopped(ar->wiphy);
174 }
175
176 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif,
177 enum nl80211_wpa_versions wpa_version)
178 {
179 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version);
180
181 if (!wpa_version) {
182 vif->auth_mode = NONE_AUTH;
183 } else if (wpa_version & NL80211_WPA_VERSION_2) {
184 vif->auth_mode = WPA2_AUTH;
185 } else if (wpa_version & NL80211_WPA_VERSION_1) {
186 vif->auth_mode = WPA_AUTH;
187 } else {
188 ath6kl_err("%s: %u not supported\n", __func__, wpa_version);
189 return -ENOTSUPP;
190 }
191
192 return 0;
193 }
194
195 static int ath6kl_set_auth_type(struct ath6kl_vif *vif,
196 enum nl80211_auth_type auth_type)
197 {
198 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type);
199
200 switch (auth_type) {
201 case NL80211_AUTHTYPE_OPEN_SYSTEM:
202 vif->dot11_auth_mode = OPEN_AUTH;
203 break;
204 case NL80211_AUTHTYPE_SHARED_KEY:
205 vif->dot11_auth_mode = SHARED_AUTH;
206 break;
207 case NL80211_AUTHTYPE_NETWORK_EAP:
208 vif->dot11_auth_mode = LEAP_AUTH;
209 break;
210
211 case NL80211_AUTHTYPE_AUTOMATIC:
212 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH;
213 break;
214
215 default:
216 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type);
217 return -ENOTSUPP;
218 }
219
220 return 0;
221 }
222
223 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast)
224 {
225 u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto;
226 u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len :
227 &vif->grp_crypto_len;
228
229 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n",
230 __func__, cipher, ucast);
231
232 switch (cipher) {
233 case 0:
234 /* our own hack to use value 0 as no crypto used */
235 *ar_cipher = NONE_CRYPT;
236 *ar_cipher_len = 0;
237 break;
238 case WLAN_CIPHER_SUITE_WEP40:
239 *ar_cipher = WEP_CRYPT;
240 *ar_cipher_len = 5;
241 break;
242 case WLAN_CIPHER_SUITE_WEP104:
243 *ar_cipher = WEP_CRYPT;
244 *ar_cipher_len = 13;
245 break;
246 case WLAN_CIPHER_SUITE_TKIP:
247 *ar_cipher = TKIP_CRYPT;
248 *ar_cipher_len = 0;
249 break;
250 case WLAN_CIPHER_SUITE_CCMP:
251 *ar_cipher = AES_CRYPT;
252 *ar_cipher_len = 0;
253 break;
254 case WLAN_CIPHER_SUITE_SMS4:
255 *ar_cipher = WAPI_CRYPT;
256 *ar_cipher_len = 0;
257 break;
258 default:
259 ath6kl_err("cipher 0x%x not supported\n", cipher);
260 return -ENOTSUPP;
261 }
262
263 return 0;
264 }
265
266 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt)
267 {
268 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt);
269
270 if (key_mgmt == WLAN_AKM_SUITE_PSK) {
271 if (vif->auth_mode == WPA_AUTH)
272 vif->auth_mode = WPA_PSK_AUTH;
273 else if (vif->auth_mode == WPA2_AUTH)
274 vif->auth_mode = WPA2_PSK_AUTH;
275 } else if (key_mgmt == 0x00409600) {
276 if (vif->auth_mode == WPA_AUTH)
277 vif->auth_mode = WPA_AUTH_CCKM;
278 else if (vif->auth_mode == WPA2_AUTH)
279 vif->auth_mode = WPA2_AUTH_CCKM;
280 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) {
281 vif->auth_mode = NONE_AUTH;
282 }
283 }
284
285 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif)
286 {
287 struct ath6kl *ar = vif->ar;
288
289 if (!test_bit(WMI_READY, &ar->flag)) {
290 ath6kl_err("wmi is not ready\n");
291 return false;
292 }
293
294 if (!test_bit(WLAN_ENABLED, &vif->flags)) {
295 ath6kl_err("wlan disabled\n");
296 return false;
297 }
298
299 return true;
300 }
301
302 static bool ath6kl_is_wpa_ie(const u8 *pos)
303 {
304 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
305 pos[2] == 0x00 && pos[3] == 0x50 &&
306 pos[4] == 0xf2 && pos[5] == 0x01;
307 }
308
309 static bool ath6kl_is_rsn_ie(const u8 *pos)
310 {
311 return pos[0] == WLAN_EID_RSN;
312 }
313
314 static bool ath6kl_is_wps_ie(const u8 *pos)
315 {
316 return (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
317 pos[1] >= 4 &&
318 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 &&
319 pos[5] == 0x04);
320 }
321
322 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies,
323 size_t ies_len)
324 {
325 struct ath6kl *ar = vif->ar;
326 const u8 *pos;
327 u8 *buf = NULL;
328 size_t len = 0;
329 int ret;
330
331 /*
332 * Clear previously set flag
333 */
334
335 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
336
337 /*
338 * Filter out RSN/WPA IE(s)
339 */
340
341 if (ies && ies_len) {
342 buf = kmalloc(ies_len, GFP_KERNEL);
343 if (buf == NULL)
344 return -ENOMEM;
345 pos = ies;
346
347 while (pos + 1 < ies + ies_len) {
348 if (pos + 2 + pos[1] > ies + ies_len)
349 break;
350 if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) {
351 memcpy(buf + len, pos, 2 + pos[1]);
352 len += 2 + pos[1];
353 }
354
355 if (ath6kl_is_wps_ie(pos))
356 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG;
357
358 pos += 2 + pos[1];
359 }
360 }
361
362 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
363 WMI_FRAME_ASSOC_REQ, buf, len);
364 kfree(buf);
365 return ret;
366 }
367
368 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type)
369 {
370 switch (type) {
371 case NL80211_IFTYPE_STATION:
372 case NL80211_IFTYPE_P2P_CLIENT:
373 *nw_type = INFRA_NETWORK;
374 break;
375 case NL80211_IFTYPE_ADHOC:
376 *nw_type = ADHOC_NETWORK;
377 break;
378 case NL80211_IFTYPE_AP:
379 case NL80211_IFTYPE_P2P_GO:
380 *nw_type = AP_NETWORK;
381 break;
382 default:
383 ath6kl_err("invalid interface type %u\n", type);
384 return -ENOTSUPP;
385 }
386
387 return 0;
388 }
389
390 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type,
391 u8 *if_idx, u8 *nw_type)
392 {
393 int i;
394
395 if (ath6kl_nliftype_to_drv_iftype(type, nw_type))
396 return false;
397
398 if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) &&
399 ar->num_vif))
400 return false;
401
402 if (type == NL80211_IFTYPE_STATION ||
403 type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
404 for (i = 0; i < ar->vif_max; i++) {
405 if ((ar->avail_idx_map) & BIT(i)) {
406 *if_idx = i;
407 return true;
408 }
409 }
410 }
411
412 if (type == NL80211_IFTYPE_P2P_CLIENT ||
413 type == NL80211_IFTYPE_P2P_GO) {
414 for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
415 if ((ar->avail_idx_map) & BIT(i)) {
416 *if_idx = i;
417 return true;
418 }
419 }
420 }
421
422 return false;
423 }
424
425 static bool ath6kl_is_tx_pending(struct ath6kl *ar)
426 {
427 return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0;
428 }
429
430 static void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif,
431 bool enable)
432 {
433 int err;
434
435 if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
436 return;
437
438 if (vif->nw_type != INFRA_NETWORK)
439 return;
440
441 if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
442 vif->ar->fw_capabilities))
443 return;
444
445 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
446 enable ? "enable" : "disable");
447
448 err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
449 vif->fw_vif_idx, enable);
450 if (err)
451 ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
452 enable ? "enable" : "disable", err);
453 }
454
455 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
456 struct cfg80211_connect_params *sme)
457 {
458 struct ath6kl *ar = ath6kl_priv(dev);
459 struct ath6kl_vif *vif = netdev_priv(dev);
460 int status;
461 u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
462 u16 interval;
463
464 ath6kl_cfg80211_sscan_disable(vif);
465
466 vif->sme_state = SME_CONNECTING;
467
468 if (!ath6kl_cfg80211_ready(vif))
469 return -EIO;
470
471 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
472 ath6kl_err("destroy in progress\n");
473 return -EBUSY;
474 }
475
476 if (test_bit(SKIP_SCAN, &ar->flag) &&
477 ((sme->channel && sme->channel->center_freq == 0) ||
478 (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
479 ath6kl_err("SkipScan: channel or bssid invalid\n");
480 return -EINVAL;
481 }
482
483 if (down_interruptible(&ar->sem)) {
484 ath6kl_err("busy, couldn't get access\n");
485 return -ERESTARTSYS;
486 }
487
488 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
489 ath6kl_err("busy, destroy in progress\n");
490 up(&ar->sem);
491 return -EBUSY;
492 }
493
494 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
495 /*
496 * sleep until the command queue drains
497 */
498 wait_event_interruptible_timeout(ar->event_wq,
499 ath6kl_is_tx_pending(ar),
500 WMI_TIMEOUT);
501 if (signal_pending(current)) {
502 ath6kl_err("cmd queue drain timeout\n");
503 up(&ar->sem);
504 return -EINTR;
505 }
506 }
507
508 status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
509 if (status) {
510 up(&ar->sem);
511 return status;
512 }
513
514 if (sme->ie == NULL || sme->ie_len == 0)
515 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
516
517 if (test_bit(CONNECTED, &vif->flags) &&
518 vif->ssid_len == sme->ssid_len &&
519 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
520 vif->reconnect_flag = true;
521 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx,
522 vif->req_bssid,
523 vif->ch_hint);
524
525 up(&ar->sem);
526 if (status) {
527 ath6kl_err("wmi_reconnect_cmd failed\n");
528 return -EIO;
529 }
530 return 0;
531 } else if (vif->ssid_len == sme->ssid_len &&
532 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
533 ath6kl_disconnect(vif);
534 }
535
536 memset(vif->ssid, 0, sizeof(vif->ssid));
537 vif->ssid_len = sme->ssid_len;
538 memcpy(vif->ssid, sme->ssid, sme->ssid_len);
539
540 if (sme->channel)
541 vif->ch_hint = sme->channel->center_freq;
542
543 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
544 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
545 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid));
546
547 ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions);
548
549 status = ath6kl_set_auth_type(vif, sme->auth_type);
550 if (status) {
551 up(&ar->sem);
552 return status;
553 }
554
555 if (sme->crypto.n_ciphers_pairwise)
556 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true);
557 else
558 ath6kl_set_cipher(vif, 0, true);
559
560 ath6kl_set_cipher(vif, sme->crypto.cipher_group, false);
561
562 if (sme->crypto.n_akm_suites)
563 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]);
564
565 if ((sme->key_len) &&
566 (vif->auth_mode == NONE_AUTH) &&
567 (vif->prwise_crypto == WEP_CRYPT)) {
568 struct ath6kl_key *key = NULL;
569
570 if (sme->key_idx > WMI_MAX_KEY_INDEX) {
571 ath6kl_err("key index %d out of bounds\n",
572 sme->key_idx);
573 up(&ar->sem);
574 return -ENOENT;
575 }
576
577 key = &vif->keys[sme->key_idx];
578 key->key_len = sme->key_len;
579 memcpy(key->key, sme->key, key->key_len);
580 key->cipher = vif->prwise_crypto;
581 vif->def_txkey_index = sme->key_idx;
582
583 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx,
584 vif->prwise_crypto,
585 GROUP_USAGE | TX_USAGE,
586 key->key_len,
587 NULL, 0,
588 key->key, KEY_OP_INIT_VAL, NULL,
589 NO_SYNC_WMIFLAG);
590 }
591
592 if (!ar->usr_bss_filter) {
593 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
594 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
595 ALL_BSS_FILTER, 0) != 0) {
596 ath6kl_err("couldn't set bss filtering\n");
597 up(&ar->sem);
598 return -EIO;
599 }
600 }
601
602 vif->nw_type = vif->next_mode;
603
604 /* enable enhanced bmiss detection if applicable */
605 ath6kl_cfg80211_sta_bmiss_enhance(vif, true);
606
607 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
608 nw_subtype = SUBTYPE_P2PCLIENT;
609
610 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
611 "%s: connect called with authmode %d dot11 auth %d"
612 " PW crypto %d PW crypto len %d GRP crypto %d"
613 " GRP crypto len %d channel hint %u\n",
614 __func__,
615 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
616 vif->prwise_crypto_len, vif->grp_crypto,
617 vif->grp_crypto_len, vif->ch_hint);
618
619 vif->reconnect_flag = 0;
620
621 if (vif->nw_type == INFRA_NETWORK) {
622 interval = max_t(u16, vif->listen_intvl_t,
623 ATH6KL_MAX_WOW_LISTEN_INTL);
624 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
625 interval,
626 0);
627 if (status) {
628 ath6kl_err("couldn't set listen intervel\n");
629 up(&ar->sem);
630 return status;
631 }
632 }
633
634 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
635 vif->dot11_auth_mode, vif->auth_mode,
636 vif->prwise_crypto,
637 vif->prwise_crypto_len,
638 vif->grp_crypto, vif->grp_crypto_len,
639 vif->ssid_len, vif->ssid,
640 vif->req_bssid, vif->ch_hint,
641 ar->connect_ctrl_flags, nw_subtype);
642
643 if (sme->bg_scan_period == 0) {
644 /* disable background scan if period is 0 */
645 sme->bg_scan_period = 0xffff;
646 } else if (sme->bg_scan_period == -1) {
647 /* configure default value if not specified */
648 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
649 }
650
651 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
652 sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
653
654 up(&ar->sem);
655
656 if (status == -EINVAL) {
657 memset(vif->ssid, 0, sizeof(vif->ssid));
658 vif->ssid_len = 0;
659 ath6kl_err("invalid request\n");
660 return -ENOENT;
661 } else if (status) {
662 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
663 return -EIO;
664 }
665
666 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
667 ((vif->auth_mode == WPA_PSK_AUTH) ||
668 (vif->auth_mode == WPA2_PSK_AUTH))) {
669 mod_timer(&vif->disconnect_timer,
670 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
671 }
672
673 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
674 set_bit(CONNECT_PEND, &vif->flags);
675
676 return 0;
677 }
678
679 static struct cfg80211_bss *
680 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif,
681 enum network_type nw_type,
682 const u8 *bssid,
683 struct ieee80211_channel *chan,
684 const u8 *beacon_ie,
685 size_t beacon_ie_len)
686 {
687 struct ath6kl *ar = vif->ar;
688 struct cfg80211_bss *bss;
689 u16 cap_val;
690 enum ieee80211_bss_type bss_type;
691 u8 *ie;
692
693 if (nw_type & ADHOC_NETWORK) {
694 cap_val = WLAN_CAPABILITY_IBSS;
695 bss_type = IEEE80211_BSS_TYPE_IBSS;
696 } else {
697 cap_val = WLAN_CAPABILITY_ESS;
698 bss_type = IEEE80211_BSS_TYPE_ESS;
699 }
700
701 bss = cfg80211_get_bss(ar->wiphy, chan, bssid,
702 vif->ssid, vif->ssid_len,
703 bss_type, IEEE80211_PRIVACY_ANY);
704 if (bss == NULL) {
705 /*
706 * Since cfg80211 may not yet know about the BSS,
707 * generate a partial entry until the first BSS info
708 * event becomes available.
709 *
710 * Prepend SSID element since it is not included in the Beacon
711 * IEs from the target.
712 */
713 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL);
714 if (ie == NULL)
715 return NULL;
716 ie[0] = WLAN_EID_SSID;
717 ie[1] = vif->ssid_len;
718 memcpy(ie + 2, vif->ssid, vif->ssid_len);
719 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len);
720 bss = cfg80211_inform_bss(ar->wiphy, chan,
721 CFG80211_BSS_FTYPE_UNKNOWN,
722 bssid, 0, cap_val, 100,
723 ie, 2 + vif->ssid_len + beacon_ie_len,
724 0, GFP_KERNEL);
725 if (bss)
726 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
727 "added bss %pM to cfg80211\n", bssid);
728 kfree(ie);
729 } else {
730 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n");
731 }
732
733 return bss;
734 }
735
736 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
737 u8 *bssid, u16 listen_intvl,
738 u16 beacon_intvl,
739 enum network_type nw_type,
740 u8 beacon_ie_len, u8 assoc_req_len,
741 u8 assoc_resp_len, u8 *assoc_info)
742 {
743 struct ieee80211_channel *chan;
744 struct ath6kl *ar = vif->ar;
745 struct cfg80211_bss *bss;
746
747 /* capinfo + listen interval */
748 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
749
750 /* capinfo + status code + associd */
751 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
752
753 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
754 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
755 assoc_resp_ie_offset;
756
757 assoc_req_len -= assoc_req_ie_offset;
758 assoc_resp_len -= assoc_resp_ie_offset;
759
760 /*
761 * Store Beacon interval here; DTIM period will be available only once
762 * a Beacon frame from the AP is seen.
763 */
764 vif->assoc_bss_beacon_int = beacon_intvl;
765 clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
766
767 if (nw_type & ADHOC_NETWORK) {
768 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
769 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
770 "%s: ath6k not in ibss mode\n", __func__);
771 return;
772 }
773 }
774
775 if (nw_type & INFRA_NETWORK) {
776 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
777 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
778 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
779 "%s: ath6k not in station mode\n", __func__);
780 return;
781 }
782 }
783
784 chan = ieee80211_get_channel(ar->wiphy, (int) channel);
785
786 bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
787 assoc_info, beacon_ie_len);
788 if (!bss) {
789 ath6kl_err("could not add cfg80211 bss entry\n");
790 return;
791 }
792
793 if (nw_type & ADHOC_NETWORK) {
794 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
795 nw_type & ADHOC_CREATOR ? "creator" : "joiner");
796 cfg80211_ibss_joined(vif->ndev, bssid, chan, GFP_KERNEL);
797 cfg80211_put_bss(ar->wiphy, bss);
798 return;
799 }
800
801 if (vif->sme_state == SME_CONNECTING) {
802 /* inform connect result to cfg80211 */
803 vif->sme_state = SME_CONNECTED;
804 cfg80211_connect_result(vif->ndev, bssid,
805 assoc_req_ie, assoc_req_len,
806 assoc_resp_ie, assoc_resp_len,
807 WLAN_STATUS_SUCCESS, GFP_KERNEL);
808 cfg80211_put_bss(ar->wiphy, bss);
809 } else if (vif->sme_state == SME_CONNECTED) {
810 /* inform roam event to cfg80211 */
811 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len,
812 assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
813 }
814 }
815
816 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
817 struct net_device *dev, u16 reason_code)
818 {
819 struct ath6kl *ar = ath6kl_priv(dev);
820 struct ath6kl_vif *vif = netdev_priv(dev);
821
822 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
823 reason_code);
824
825 ath6kl_cfg80211_sscan_disable(vif);
826
827 if (!ath6kl_cfg80211_ready(vif))
828 return -EIO;
829
830 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
831 ath6kl_err("busy, destroy in progress\n");
832 return -EBUSY;
833 }
834
835 if (down_interruptible(&ar->sem)) {
836 ath6kl_err("busy, couldn't get access\n");
837 return -ERESTARTSYS;
838 }
839
840 vif->reconnect_flag = 0;
841 ath6kl_disconnect(vif);
842 memset(vif->ssid, 0, sizeof(vif->ssid));
843 vif->ssid_len = 0;
844
845 if (!test_bit(SKIP_SCAN, &ar->flag))
846 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
847
848 up(&ar->sem);
849
850 vif->sme_state = SME_DISCONNECTED;
851
852 return 0;
853 }
854
855 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
856 u8 *bssid, u8 assoc_resp_len,
857 u8 *assoc_info, u16 proto_reason)
858 {
859 struct ath6kl *ar = vif->ar;
860
861 if (vif->scan_req) {
862 cfg80211_scan_done(vif->scan_req, true);
863 vif->scan_req = NULL;
864 }
865
866 if (vif->nw_type & ADHOC_NETWORK) {
867 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC)
868 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
869 "%s: ath6k not in ibss mode\n", __func__);
870 return;
871 }
872
873 if (vif->nw_type & INFRA_NETWORK) {
874 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
875 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
876 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
877 "%s: ath6k not in station mode\n", __func__);
878 return;
879 }
880 }
881
882 clear_bit(CONNECT_PEND, &vif->flags);
883
884 if (vif->sme_state == SME_CONNECTING) {
885 cfg80211_connect_result(vif->ndev,
886 bssid, NULL, 0,
887 NULL, 0,
888 WLAN_STATUS_UNSPECIFIED_FAILURE,
889 GFP_KERNEL);
890 } else if (vif->sme_state == SME_CONNECTED) {
891 cfg80211_disconnected(vif->ndev, proto_reason,
892 NULL, 0, false, GFP_KERNEL);
893 }
894
895 vif->sme_state = SME_DISCONNECTED;
896
897 /*
898 * Send a disconnect command to target when a disconnect event is
899 * received with reason code other than 3 (DISCONNECT_CMD - disconnect
900 * request from host) to make the firmware stop trying to connect even
901 * after giving disconnect event. There will be one more disconnect
902 * event for this disconnect command with reason code DISCONNECT_CMD
903 * which won't be notified to cfg80211.
904 */
905 if (reason != DISCONNECT_CMD)
906 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
907 }
908
909 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
910 struct ath6kl_vif *vif,
911 struct cfg80211_ssid *ssids, int n_ssids,
912 struct cfg80211_match_set *match_set,
913 int n_match_ssid)
914 {
915 u8 i, j, index_to_add, ssid_found = false;
916 struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS];
917
918 memset(ssid_list, 0, sizeof(ssid_list));
919
920 if (n_ssids > MAX_PROBED_SSIDS ||
921 n_match_ssid > MAX_PROBED_SSIDS)
922 return -EINVAL;
923
924 for (i = 0; i < n_ssids; i++) {
925 memcpy(ssid_list[i].ssid.ssid,
926 ssids[i].ssid,
927 ssids[i].ssid_len);
928 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len;
929
930 if (ssids[i].ssid_len)
931 ssid_list[i].flag = SPECIFIC_SSID_FLAG;
932 else
933 ssid_list[i].flag = ANY_SSID_FLAG;
934
935 if (n_match_ssid == 0)
936 ssid_list[i].flag |= MATCH_SSID_FLAG;
937 }
938
939 index_to_add = i;
940
941 for (i = 0; i < n_match_ssid; i++) {
942 ssid_found = false;
943
944 for (j = 0; j < n_ssids; j++) {
945 if ((match_set[i].ssid.ssid_len ==
946 ssid_list[j].ssid.ssid_len) &&
947 (!memcmp(ssid_list[j].ssid.ssid,
948 match_set[i].ssid.ssid,
949 match_set[i].ssid.ssid_len))) {
950 ssid_list[j].flag |= MATCH_SSID_FLAG;
951 ssid_found = true;
952 break;
953 }
954 }
955
956 if (ssid_found)
957 continue;
958
959 if (index_to_add >= MAX_PROBED_SSIDS)
960 continue;
961
962 ssid_list[index_to_add].ssid.ssid_len =
963 match_set[i].ssid.ssid_len;
964 memcpy(ssid_list[index_to_add].ssid.ssid,
965 match_set[i].ssid.ssid,
966 match_set[i].ssid.ssid_len);
967 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG;
968 index_to_add++;
969 }
970
971 for (i = 0; i < index_to_add; i++) {
972 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
973 ssid_list[i].flag,
974 ssid_list[i].ssid.ssid_len,
975 ssid_list[i].ssid.ssid);
976 }
977
978 /* Make sure no old entries are left behind */
979 for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) {
980 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
981 DISABLE_SSID_FLAG, 0, NULL);
982 }
983
984 return 0;
985 }
986
987 static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
988 struct cfg80211_scan_request *request)
989 {
990 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
991 struct ath6kl *ar = ath6kl_priv(vif->ndev);
992 s8 n_channels = 0;
993 u16 *channels = NULL;
994 int ret = 0;
995 u32 force_fg_scan = 0;
996
997 if (!ath6kl_cfg80211_ready(vif))
998 return -EIO;
999
1000 ath6kl_cfg80211_sscan_disable(vif);
1001
1002 if (!ar->usr_bss_filter) {
1003 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1004 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1005 ALL_BSS_FILTER, 0);
1006 if (ret) {
1007 ath6kl_err("couldn't set bss filtering\n");
1008 return ret;
1009 }
1010 }
1011
1012 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
1013 request->n_ssids, NULL, 0);
1014 if (ret < 0)
1015 return ret;
1016
1017 /* this also clears IE in fw if it's not set */
1018 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
1019 WMI_FRAME_PROBE_REQ,
1020 request->ie, request->ie_len);
1021 if (ret) {
1022 ath6kl_err("failed to set Probe Request appie for scan\n");
1023 return ret;
1024 }
1025
1026 /*
1027 * Scan only the requested channels if the request specifies a set of
1028 * channels. If the list is longer than the target supports, do not
1029 * configure the list and instead, scan all available channels.
1030 */
1031 if (request->n_channels > 0 &&
1032 request->n_channels <= WMI_MAX_CHANNELS) {
1033 u8 i;
1034
1035 n_channels = request->n_channels;
1036
1037 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
1038 if (channels == NULL) {
1039 ath6kl_warn("failed to set scan channels, scan all channels");
1040 n_channels = 0;
1041 }
1042
1043 for (i = 0; i < n_channels; i++)
1044 channels[i] = request->channels[i]->center_freq;
1045 }
1046
1047 if (test_bit(CONNECTED, &vif->flags))
1048 force_fg_scan = 1;
1049
1050 vif->scan_req = request;
1051
1052 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
1053 WMI_LONG_SCAN, force_fg_scan,
1054 false, 0,
1055 ATH6KL_FG_SCAN_INTERVAL,
1056 n_channels, channels,
1057 request->no_cck,
1058 request->rates);
1059 if (ret) {
1060 ath6kl_err("failed to start scan: %d\n", ret);
1061 vif->scan_req = NULL;
1062 }
1063
1064 kfree(channels);
1065
1066 return ret;
1067 }
1068
1069 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1070 {
1071 struct ath6kl *ar = vif->ar;
1072 int i;
1073
1074 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1075 aborted ? " aborted" : "");
1076
1077 if (!vif->scan_req)
1078 return;
1079
1080 if (aborted)
1081 goto out;
1082
1083 if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1084 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1085 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1086 i + 1, DISABLE_SSID_FLAG,
1087 0, NULL);
1088 }
1089 }
1090
1091 out:
1092 cfg80211_scan_done(vif->scan_req, aborted);
1093 vif->scan_req = NULL;
1094 }
1095
1096 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1097 enum wmi_phy_mode mode)
1098 {
1099 struct cfg80211_chan_def chandef;
1100
1101 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1102 "channel switch notify nw_type %d freq %d mode %d\n",
1103 vif->nw_type, freq, mode);
1104
1105 cfg80211_chandef_create(&chandef,
1106 ieee80211_get_channel(vif->ar->wiphy, freq),
1107 (mode == WMI_11G_HT20) ?
1108 NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT);
1109
1110 mutex_lock(&vif->wdev.mtx);
1111 cfg80211_ch_switch_notify(vif->ndev, &chandef);
1112 mutex_unlock(&vif->wdev.mtx);
1113 }
1114
1115 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1116 u8 key_index, bool pairwise,
1117 const u8 *mac_addr,
1118 struct key_params *params)
1119 {
1120 struct ath6kl *ar = ath6kl_priv(ndev);
1121 struct ath6kl_vif *vif = netdev_priv(ndev);
1122 struct ath6kl_key *key = NULL;
1123 int seq_len;
1124 u8 key_usage;
1125 u8 key_type;
1126
1127 if (!ath6kl_cfg80211_ready(vif))
1128 return -EIO;
1129
1130 if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1131 if (params->key_len != WMI_KRK_LEN)
1132 return -EINVAL;
1133 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1134 params->key);
1135 }
1136
1137 if (key_index > WMI_MAX_KEY_INDEX) {
1138 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1139 "%s: key index %d out of bounds\n", __func__,
1140 key_index);
1141 return -ENOENT;
1142 }
1143
1144 key = &vif->keys[key_index];
1145 memset(key, 0, sizeof(struct ath6kl_key));
1146
1147 if (pairwise)
1148 key_usage = PAIRWISE_USAGE;
1149 else
1150 key_usage = GROUP_USAGE;
1151
1152 seq_len = params->seq_len;
1153 if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1154 seq_len > ATH6KL_KEY_SEQ_LEN) {
1155 /* Only first half of the WPI PN is configured */
1156 seq_len = ATH6KL_KEY_SEQ_LEN;
1157 }
1158 if (params->key_len > WLAN_MAX_KEY_LEN ||
1159 seq_len > sizeof(key->seq))
1160 return -EINVAL;
1161
1162 key->key_len = params->key_len;
1163 memcpy(key->key, params->key, key->key_len);
1164 key->seq_len = seq_len;
1165 memcpy(key->seq, params->seq, key->seq_len);
1166 key->cipher = params->cipher;
1167
1168 switch (key->cipher) {
1169 case WLAN_CIPHER_SUITE_WEP40:
1170 case WLAN_CIPHER_SUITE_WEP104:
1171 key_type = WEP_CRYPT;
1172 break;
1173
1174 case WLAN_CIPHER_SUITE_TKIP:
1175 key_type = TKIP_CRYPT;
1176 break;
1177
1178 case WLAN_CIPHER_SUITE_CCMP:
1179 key_type = AES_CRYPT;
1180 break;
1181 case WLAN_CIPHER_SUITE_SMS4:
1182 key_type = WAPI_CRYPT;
1183 break;
1184
1185 default:
1186 return -ENOTSUPP;
1187 }
1188
1189 if (((vif->auth_mode == WPA_PSK_AUTH) ||
1190 (vif->auth_mode == WPA2_PSK_AUTH)) &&
1191 (key_usage & GROUP_USAGE))
1192 del_timer(&vif->disconnect_timer);
1193
1194 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1195 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1196 __func__, key_index, key->key_len, key_type,
1197 key_usage, key->seq_len);
1198
1199 if (vif->nw_type == AP_NETWORK && !pairwise &&
1200 (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1201 key_type == WAPI_CRYPT)) {
1202 ar->ap_mode_bkey.valid = true;
1203 ar->ap_mode_bkey.key_index = key_index;
1204 ar->ap_mode_bkey.key_type = key_type;
1205 ar->ap_mode_bkey.key_len = key->key_len;
1206 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1207 if (!test_bit(CONNECTED, &vif->flags)) {
1208 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1209 "Delay initial group key configuration until AP mode has been started\n");
1210 /*
1211 * The key will be set in ath6kl_connect_ap_mode() once
1212 * the connected event is received from the target.
1213 */
1214 return 0;
1215 }
1216 }
1217
1218 if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1219 !test_bit(CONNECTED, &vif->flags)) {
1220 /*
1221 * Store the key locally so that it can be re-configured after
1222 * the AP mode has properly started
1223 * (ath6kl_install_statioc_wep_keys).
1224 */
1225 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1226 "Delay WEP key configuration until AP mode has been started\n");
1227 vif->wep_key_list[key_index].key_len = key->key_len;
1228 memcpy(vif->wep_key_list[key_index].key, key->key,
1229 key->key_len);
1230 return 0;
1231 }
1232
1233 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1234 key_type, key_usage, key->key_len,
1235 key->seq, key->seq_len, key->key,
1236 KEY_OP_INIT_VAL,
1237 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1238 }
1239
1240 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1241 u8 key_index, bool pairwise,
1242 const u8 *mac_addr)
1243 {
1244 struct ath6kl *ar = ath6kl_priv(ndev);
1245 struct ath6kl_vif *vif = netdev_priv(ndev);
1246
1247 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1248
1249 if (!ath6kl_cfg80211_ready(vif))
1250 return -EIO;
1251
1252 if (key_index > WMI_MAX_KEY_INDEX) {
1253 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1254 "%s: key index %d out of bounds\n", __func__,
1255 key_index);
1256 return -ENOENT;
1257 }
1258
1259 if (!vif->keys[key_index].key_len) {
1260 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1261 "%s: index %d is empty\n", __func__, key_index);
1262 return 0;
1263 }
1264
1265 vif->keys[key_index].key_len = 0;
1266
1267 return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1268 }
1269
1270 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1271 u8 key_index, bool pairwise,
1272 const u8 *mac_addr, void *cookie,
1273 void (*callback) (void *cookie,
1274 struct key_params *))
1275 {
1276 struct ath6kl_vif *vif = netdev_priv(ndev);
1277 struct ath6kl_key *key = NULL;
1278 struct key_params params;
1279
1280 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1281
1282 if (!ath6kl_cfg80211_ready(vif))
1283 return -EIO;
1284
1285 if (key_index > WMI_MAX_KEY_INDEX) {
1286 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1287 "%s: key index %d out of bounds\n", __func__,
1288 key_index);
1289 return -ENOENT;
1290 }
1291
1292 key = &vif->keys[key_index];
1293 memset(&params, 0, sizeof(params));
1294 params.cipher = key->cipher;
1295 params.key_len = key->key_len;
1296 params.seq_len = key->seq_len;
1297 params.seq = key->seq;
1298 params.key = key->key;
1299
1300 callback(cookie, &params);
1301
1302 return key->key_len ? 0 : -ENOENT;
1303 }
1304
1305 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1306 struct net_device *ndev,
1307 u8 key_index, bool unicast,
1308 bool multicast)
1309 {
1310 struct ath6kl *ar = ath6kl_priv(ndev);
1311 struct ath6kl_vif *vif = netdev_priv(ndev);
1312 struct ath6kl_key *key = NULL;
1313 u8 key_usage;
1314 enum crypto_type key_type = NONE_CRYPT;
1315
1316 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1317
1318 if (!ath6kl_cfg80211_ready(vif))
1319 return -EIO;
1320
1321 if (key_index > WMI_MAX_KEY_INDEX) {
1322 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1323 "%s: key index %d out of bounds\n",
1324 __func__, key_index);
1325 return -ENOENT;
1326 }
1327
1328 if (!vif->keys[key_index].key_len) {
1329 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1330 __func__, key_index);
1331 return -EINVAL;
1332 }
1333
1334 vif->def_txkey_index = key_index;
1335 key = &vif->keys[vif->def_txkey_index];
1336 key_usage = GROUP_USAGE;
1337 if (vif->prwise_crypto == WEP_CRYPT)
1338 key_usage |= TX_USAGE;
1339 if (unicast)
1340 key_type = vif->prwise_crypto;
1341 if (multicast)
1342 key_type = vif->grp_crypto;
1343
1344 if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1345 return 0; /* Delay until AP mode has been started */
1346
1347 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1348 vif->def_txkey_index,
1349 key_type, key_usage,
1350 key->key_len, key->seq, key->seq_len,
1351 key->key,
1352 KEY_OP_INIT_VAL, NULL,
1353 SYNC_BOTH_WMIFLAG);
1354 }
1355
1356 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1357 bool ismcast)
1358 {
1359 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1360 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1361
1362 cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1363 (ismcast ? NL80211_KEYTYPE_GROUP :
1364 NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1365 GFP_KERNEL);
1366 }
1367
1368 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1369 {
1370 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1371 struct ath6kl_vif *vif;
1372 int ret;
1373
1374 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1375 changed);
1376
1377 vif = ath6kl_vif_first(ar);
1378 if (!vif)
1379 return -EIO;
1380
1381 if (!ath6kl_cfg80211_ready(vif))
1382 return -EIO;
1383
1384 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1385 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1386 if (ret != 0) {
1387 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1388 return -EIO;
1389 }
1390 }
1391
1392 return 0;
1393 }
1394
1395 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1396 struct wireless_dev *wdev,
1397 enum nl80211_tx_power_setting type,
1398 int mbm)
1399 {
1400 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1401 struct ath6kl_vif *vif;
1402 int dbm = MBM_TO_DBM(mbm);
1403
1404 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1405 type, dbm);
1406
1407 vif = ath6kl_vif_first(ar);
1408 if (!vif)
1409 return -EIO;
1410
1411 if (!ath6kl_cfg80211_ready(vif))
1412 return -EIO;
1413
1414 switch (type) {
1415 case NL80211_TX_POWER_AUTOMATIC:
1416 return 0;
1417 case NL80211_TX_POWER_LIMITED:
1418 ar->tx_pwr = dbm;
1419 break;
1420 default:
1421 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1422 __func__, type);
1423 return -EOPNOTSUPP;
1424 }
1425
1426 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1427
1428 return 0;
1429 }
1430
1431 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy,
1432 struct wireless_dev *wdev,
1433 int *dbm)
1434 {
1435 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1436 struct ath6kl_vif *vif;
1437
1438 vif = ath6kl_vif_first(ar);
1439 if (!vif)
1440 return -EIO;
1441
1442 if (!ath6kl_cfg80211_ready(vif))
1443 return -EIO;
1444
1445 if (test_bit(CONNECTED, &vif->flags)) {
1446 ar->tx_pwr = 0;
1447
1448 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1449 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1450 return -EIO;
1451 }
1452
1453 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1454 5 * HZ);
1455
1456 if (signal_pending(current)) {
1457 ath6kl_err("target did not respond\n");
1458 return -EINTR;
1459 }
1460 }
1461
1462 *dbm = ar->tx_pwr;
1463 return 0;
1464 }
1465
1466 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1467 struct net_device *dev,
1468 bool pmgmt, int timeout)
1469 {
1470 struct ath6kl *ar = ath6kl_priv(dev);
1471 struct wmi_power_mode_cmd mode;
1472 struct ath6kl_vif *vif = netdev_priv(dev);
1473
1474 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1475 __func__, pmgmt, timeout);
1476
1477 if (!ath6kl_cfg80211_ready(vif))
1478 return -EIO;
1479
1480 if (pmgmt) {
1481 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1482 mode.pwr_mode = REC_POWER;
1483 } else {
1484 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1485 mode.pwr_mode = MAX_PERF_POWER;
1486 }
1487
1488 if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1489 mode.pwr_mode) != 0) {
1490 ath6kl_err("wmi_powermode_cmd failed\n");
1491 return -EIO;
1492 }
1493
1494 return 0;
1495 }
1496
1497 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1498 const char *name,
1499 unsigned char name_assign_type,
1500 enum nl80211_iftype type,
1501 u32 *flags,
1502 struct vif_params *params)
1503 {
1504 struct ath6kl *ar = wiphy_priv(wiphy);
1505 struct wireless_dev *wdev;
1506 u8 if_idx, nw_type;
1507
1508 if (ar->num_vif == ar->vif_max) {
1509 ath6kl_err("Reached maximum number of supported vif\n");
1510 return ERR_PTR(-EINVAL);
1511 }
1512
1513 if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1514 ath6kl_err("Not a supported interface type\n");
1515 return ERR_PTR(-EINVAL);
1516 }
1517
1518 wdev = ath6kl_interface_add(ar, name, name_assign_type, type, if_idx, nw_type);
1519 if (!wdev)
1520 return ERR_PTR(-ENOMEM);
1521
1522 ar->num_vif++;
1523
1524 return wdev;
1525 }
1526
1527 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1528 struct wireless_dev *wdev)
1529 {
1530 struct ath6kl *ar = wiphy_priv(wiphy);
1531 struct ath6kl_vif *vif = netdev_priv(wdev->netdev);
1532
1533 spin_lock_bh(&ar->list_lock);
1534 list_del(&vif->list);
1535 spin_unlock_bh(&ar->list_lock);
1536
1537 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1538
1539 rtnl_lock();
1540 ath6kl_cfg80211_vif_cleanup(vif);
1541 rtnl_unlock();
1542
1543 return 0;
1544 }
1545
1546 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1547 struct net_device *ndev,
1548 enum nl80211_iftype type, u32 *flags,
1549 struct vif_params *params)
1550 {
1551 struct ath6kl_vif *vif = netdev_priv(ndev);
1552 int i;
1553
1554 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1555
1556 /*
1557 * Don't bring up p2p on an interface which is not initialized
1558 * for p2p operation where fw does not have capability to switch
1559 * dynamically between non-p2p and p2p type interface.
1560 */
1561 if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1562 vif->ar->fw_capabilities) &&
1563 (type == NL80211_IFTYPE_P2P_CLIENT ||
1564 type == NL80211_IFTYPE_P2P_GO)) {
1565 if (vif->ar->vif_max == 1) {
1566 if (vif->fw_vif_idx != 0)
1567 return -EINVAL;
1568 else
1569 goto set_iface_type;
1570 }
1571
1572 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1573 if (i == vif->fw_vif_idx)
1574 break;
1575 }
1576
1577 if (i == vif->ar->vif_max) {
1578 ath6kl_err("Invalid interface to bring up P2P\n");
1579 return -EINVAL;
1580 }
1581 }
1582
1583 /* need to clean up enhanced bmiss detection fw state */
1584 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1585
1586 set_iface_type:
1587 switch (type) {
1588 case NL80211_IFTYPE_STATION:
1589 case NL80211_IFTYPE_P2P_CLIENT:
1590 vif->next_mode = INFRA_NETWORK;
1591 break;
1592 case NL80211_IFTYPE_ADHOC:
1593 vif->next_mode = ADHOC_NETWORK;
1594 break;
1595 case NL80211_IFTYPE_AP:
1596 case NL80211_IFTYPE_P2P_GO:
1597 vif->next_mode = AP_NETWORK;
1598 break;
1599 default:
1600 ath6kl_err("invalid interface type %u\n", type);
1601 return -EOPNOTSUPP;
1602 }
1603
1604 vif->wdev.iftype = type;
1605
1606 return 0;
1607 }
1608
1609 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1610 struct net_device *dev,
1611 struct cfg80211_ibss_params *ibss_param)
1612 {
1613 struct ath6kl *ar = ath6kl_priv(dev);
1614 struct ath6kl_vif *vif = netdev_priv(dev);
1615 int status;
1616
1617 if (!ath6kl_cfg80211_ready(vif))
1618 return -EIO;
1619
1620 vif->ssid_len = ibss_param->ssid_len;
1621 memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1622
1623 if (ibss_param->chandef.chan)
1624 vif->ch_hint = ibss_param->chandef.chan->center_freq;
1625
1626 if (ibss_param->channel_fixed) {
1627 /*
1628 * TODO: channel_fixed: The channel should be fixed, do not
1629 * search for IBSSs to join on other channels. Target
1630 * firmware does not support this feature, needs to be
1631 * updated.
1632 */
1633 return -EOPNOTSUPP;
1634 }
1635
1636 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1637 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1638 memcpy(vif->req_bssid, ibss_param->bssid,
1639 sizeof(vif->req_bssid));
1640
1641 ath6kl_set_wpa_version(vif, 0);
1642
1643 status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1644 if (status)
1645 return status;
1646
1647 if (ibss_param->privacy) {
1648 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1649 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1650 } else {
1651 ath6kl_set_cipher(vif, 0, true);
1652 ath6kl_set_cipher(vif, 0, false);
1653 }
1654
1655 vif->nw_type = vif->next_mode;
1656
1657 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1658 "%s: connect called with authmode %d dot11 auth %d"
1659 " PW crypto %d PW crypto len %d GRP crypto %d"
1660 " GRP crypto len %d channel hint %u\n",
1661 __func__,
1662 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1663 vif->prwise_crypto_len, vif->grp_crypto,
1664 vif->grp_crypto_len, vif->ch_hint);
1665
1666 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1667 vif->dot11_auth_mode, vif->auth_mode,
1668 vif->prwise_crypto,
1669 vif->prwise_crypto_len,
1670 vif->grp_crypto, vif->grp_crypto_len,
1671 vif->ssid_len, vif->ssid,
1672 vif->req_bssid, vif->ch_hint,
1673 ar->connect_ctrl_flags, SUBTYPE_NONE);
1674 set_bit(CONNECT_PEND, &vif->flags);
1675
1676 return 0;
1677 }
1678
1679 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1680 struct net_device *dev)
1681 {
1682 struct ath6kl_vif *vif = netdev_priv(dev);
1683
1684 if (!ath6kl_cfg80211_ready(vif))
1685 return -EIO;
1686
1687 ath6kl_disconnect(vif);
1688 memset(vif->ssid, 0, sizeof(vif->ssid));
1689 vif->ssid_len = 0;
1690
1691 return 0;
1692 }
1693
1694 static const u32 cipher_suites[] = {
1695 WLAN_CIPHER_SUITE_WEP40,
1696 WLAN_CIPHER_SUITE_WEP104,
1697 WLAN_CIPHER_SUITE_TKIP,
1698 WLAN_CIPHER_SUITE_CCMP,
1699 CCKM_KRK_CIPHER_SUITE,
1700 WLAN_CIPHER_SUITE_SMS4,
1701 };
1702
1703 static bool is_rate_legacy(s32 rate)
1704 {
1705 static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1706 6000, 9000, 12000, 18000, 24000,
1707 36000, 48000, 54000
1708 };
1709 u8 i;
1710
1711 for (i = 0; i < ARRAY_SIZE(legacy); i++)
1712 if (rate == legacy[i])
1713 return true;
1714
1715 return false;
1716 }
1717
1718 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1719 {
1720 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1721 52000, 58500, 65000, 72200
1722 };
1723 u8 i;
1724
1725 for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1726 if (rate == ht20[i]) {
1727 if (i == ARRAY_SIZE(ht20) - 1)
1728 /* last rate uses sgi */
1729 *sgi = true;
1730 else
1731 *sgi = false;
1732
1733 *mcs = i;
1734 return true;
1735 }
1736 }
1737 return false;
1738 }
1739
1740 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1741 {
1742 static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1743 81000, 108000, 121500, 135000,
1744 150000
1745 };
1746 u8 i;
1747
1748 for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1749 if (rate == ht40[i]) {
1750 if (i == ARRAY_SIZE(ht40) - 1)
1751 /* last rate uses sgi */
1752 *sgi = true;
1753 else
1754 *sgi = false;
1755
1756 *mcs = i;
1757 return true;
1758 }
1759 }
1760
1761 return false;
1762 }
1763
1764 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1765 const u8 *mac, struct station_info *sinfo)
1766 {
1767 struct ath6kl *ar = ath6kl_priv(dev);
1768 struct ath6kl_vif *vif = netdev_priv(dev);
1769 long left;
1770 bool sgi;
1771 s32 rate;
1772 int ret;
1773 u8 mcs;
1774
1775 if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1776 return -ENOENT;
1777
1778 if (down_interruptible(&ar->sem))
1779 return -EBUSY;
1780
1781 set_bit(STATS_UPDATE_PEND, &vif->flags);
1782
1783 ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1784
1785 if (ret != 0) {
1786 up(&ar->sem);
1787 return -EIO;
1788 }
1789
1790 left = wait_event_interruptible_timeout(ar->event_wq,
1791 !test_bit(STATS_UPDATE_PEND,
1792 &vif->flags),
1793 WMI_TIMEOUT);
1794
1795 up(&ar->sem);
1796
1797 if (left == 0)
1798 return -ETIMEDOUT;
1799 else if (left < 0)
1800 return left;
1801
1802 if (vif->target_stats.rx_byte) {
1803 sinfo->rx_bytes = vif->target_stats.rx_byte;
1804 sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64);
1805 sinfo->rx_packets = vif->target_stats.rx_pkt;
1806 sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
1807 }
1808
1809 if (vif->target_stats.tx_byte) {
1810 sinfo->tx_bytes = vif->target_stats.tx_byte;
1811 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64);
1812 sinfo->tx_packets = vif->target_stats.tx_pkt;
1813 sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
1814 }
1815
1816 sinfo->signal = vif->target_stats.cs_rssi;
1817 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1818
1819 rate = vif->target_stats.tx_ucast_rate;
1820
1821 if (is_rate_legacy(rate)) {
1822 sinfo->txrate.legacy = rate / 100;
1823 } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1824 if (sgi) {
1825 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1826 sinfo->txrate.mcs = mcs - 1;
1827 } else {
1828 sinfo->txrate.mcs = mcs;
1829 }
1830
1831 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1832 sinfo->txrate.bw = RATE_INFO_BW_20;
1833 } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1834 if (sgi) {
1835 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1836 sinfo->txrate.mcs = mcs - 1;
1837 } else {
1838 sinfo->txrate.mcs = mcs;
1839 }
1840
1841 sinfo->txrate.bw = RATE_INFO_BW_40;
1842 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1843 } else {
1844 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1845 "invalid rate from stats: %d\n", rate);
1846 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1847 return 0;
1848 }
1849
1850 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1851
1852 if (test_bit(CONNECTED, &vif->flags) &&
1853 test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1854 vif->nw_type == INFRA_NETWORK) {
1855 sinfo->filled |= BIT(NL80211_STA_INFO_BSS_PARAM);
1856 sinfo->bss_param.flags = 0;
1857 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1858 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1859 }
1860
1861 return 0;
1862 }
1863
1864 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1865 struct cfg80211_pmksa *pmksa)
1866 {
1867 struct ath6kl *ar = ath6kl_priv(netdev);
1868 struct ath6kl_vif *vif = netdev_priv(netdev);
1869
1870 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1871 pmksa->pmkid, true);
1872 }
1873
1874 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1875 struct cfg80211_pmksa *pmksa)
1876 {
1877 struct ath6kl *ar = ath6kl_priv(netdev);
1878 struct ath6kl_vif *vif = netdev_priv(netdev);
1879
1880 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1881 pmksa->pmkid, false);
1882 }
1883
1884 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1885 {
1886 struct ath6kl *ar = ath6kl_priv(netdev);
1887 struct ath6kl_vif *vif = netdev_priv(netdev);
1888
1889 if (test_bit(CONNECTED, &vif->flags))
1890 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1891 vif->bssid, NULL, false);
1892 return 0;
1893 }
1894
1895 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1896 struct cfg80211_wowlan *wow, u32 *filter)
1897 {
1898 int ret, pos;
1899 u8 mask[WOW_PATTERN_SIZE];
1900 u16 i;
1901
1902 /* Configure the patterns that we received from the user. */
1903 for (i = 0; i < wow->n_patterns; i++) {
1904 /*
1905 * Convert given nl80211 specific mask value to equivalent
1906 * driver specific mask value and send it to the chip along
1907 * with patterns. For example, If the mask value defined in
1908 * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1909 * then equivalent driver specific mask value is
1910 * "0xFF 0x00 0xFF 0x00".
1911 */
1912 memset(&mask, 0, sizeof(mask));
1913 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1914 if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1915 mask[pos] = 0xFF;
1916 }
1917 /*
1918 * Note: Pattern's offset is not passed as part of wowlan
1919 * parameter from CFG layer. So it's always passed as ZERO
1920 * to the firmware. It means, given WOW patterns are always
1921 * matched from the first byte of received pkt in the firmware.
1922 */
1923 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1924 vif->fw_vif_idx, WOW_LIST_ID,
1925 wow->patterns[i].pattern_len,
1926 0 /* pattern offset */,
1927 wow->patterns[i].pattern, mask);
1928 if (ret)
1929 return ret;
1930 }
1931
1932 if (wow->disconnect)
1933 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1934
1935 if (wow->magic_pkt)
1936 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1937
1938 if (wow->gtk_rekey_failure)
1939 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1940
1941 if (wow->eap_identity_req)
1942 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1943
1944 if (wow->four_way_handshake)
1945 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1946
1947 return 0;
1948 }
1949
1950 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1951 {
1952 static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1953 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1954 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1955 0x00, 0x08 };
1956 static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1957 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1958 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1959 0x00, 0x7f };
1960 u8 unicst_offset = 0;
1961 static const u8 arp_pattern[] = { 0x08, 0x06 };
1962 static const u8 arp_mask[] = { 0xff, 0xff };
1963 u8 arp_offset = 20;
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 static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1968 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1969 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1970 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1971 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1972 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1973 static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1974 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1975 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1976 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1977 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1978 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1979 u8 dhcp_offset = 0;
1980 int ret;
1981
1982 /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1983 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1984 vif->fw_vif_idx, WOW_LIST_ID,
1985 sizeof(unicst_pattern), unicst_offset,
1986 unicst_pattern, unicst_mask);
1987 if (ret) {
1988 ath6kl_err("failed to add WOW unicast IP pattern\n");
1989 return ret;
1990 }
1991
1992 /* Setup all ARP pkt pattern */
1993 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1994 vif->fw_vif_idx, WOW_LIST_ID,
1995 sizeof(arp_pattern), arp_offset,
1996 arp_pattern, arp_mask);
1997 if (ret) {
1998 ath6kl_err("failed to add WOW ARP pattern\n");
1999 return ret;
2000 }
2001
2002 /*
2003 * Setup multicast pattern for mDNS 224.0.0.251,
2004 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2005 */
2006 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2007 vif->fw_vif_idx, WOW_LIST_ID,
2008 sizeof(discvr_pattern), discvr_offset,
2009 discvr_pattern, discvr_mask);
2010 if (ret) {
2011 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2012 return ret;
2013 }
2014
2015 /* Setup all DHCP broadcast pkt pattern */
2016 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2017 vif->fw_vif_idx, WOW_LIST_ID,
2018 sizeof(dhcp_pattern), dhcp_offset,
2019 dhcp_pattern, dhcp_mask);
2020 if (ret) {
2021 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2022 return ret;
2023 }
2024
2025 return 0;
2026 }
2027
2028 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2029 {
2030 struct net_device *ndev = vif->ndev;
2031 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2032 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2033 u8 discvr_offset = 38;
2034 u8 mac_mask[ETH_ALEN];
2035 int ret;
2036
2037 /* Setup unicast pkt pattern */
2038 eth_broadcast_addr(mac_mask);
2039 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2040 vif->fw_vif_idx, WOW_LIST_ID,
2041 ETH_ALEN, 0, ndev->dev_addr,
2042 mac_mask);
2043 if (ret) {
2044 ath6kl_err("failed to add WOW unicast pattern\n");
2045 return ret;
2046 }
2047
2048 /*
2049 * Setup multicast pattern for mDNS 224.0.0.251,
2050 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2051 */
2052 if ((ndev->flags & IFF_ALLMULTI) ||
2053 (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2054 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2055 vif->fw_vif_idx, WOW_LIST_ID,
2056 sizeof(discvr_pattern), discvr_offset,
2057 discvr_pattern, discvr_mask);
2058 if (ret) {
2059 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2060 return ret;
2061 }
2062 }
2063
2064 return 0;
2065 }
2066
2067 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2068 {
2069 return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2070 }
2071
2072 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2073 {
2074 return !ar->tx_pending[ar->ctrl_ep];
2075 }
2076
2077 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2078 {
2079 int ret, left;
2080
2081 clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2082
2083 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2084 ATH6KL_HOST_MODE_ASLEEP);
2085 if (ret)
2086 return ret;
2087
2088 left = wait_event_interruptible_timeout(ar->event_wq,
2089 is_hsleep_mode_procsed(vif),
2090 WMI_TIMEOUT);
2091 if (left == 0) {
2092 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2093 ret = -ETIMEDOUT;
2094 } else if (left < 0) {
2095 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2096 left);
2097 ret = left;
2098 }
2099
2100 if (ar->tx_pending[ar->ctrl_ep]) {
2101 left = wait_event_interruptible_timeout(ar->event_wq,
2102 is_ctrl_ep_empty(ar),
2103 WMI_TIMEOUT);
2104 if (left == 0) {
2105 ath6kl_warn("clear wmi ctrl data timeout\n");
2106 ret = -ETIMEDOUT;
2107 } else if (left < 0) {
2108 ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2109 ret = left;
2110 }
2111 }
2112
2113 return ret;
2114 }
2115
2116 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif,
2117 struct cfg80211_wowlan *wow, u32 *filter)
2118 {
2119 struct ath6kl *ar = vif->ar;
2120 struct in_device *in_dev;
2121 struct in_ifaddr *ifa;
2122 int ret;
2123 u16 i, bmiss_time;
2124 __be32 ips[MAX_IP_ADDRS];
2125 u8 index = 0;
2126
2127 if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2128 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2129 ar->fw_capabilities)) {
2130 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2131 vif->fw_vif_idx, false);
2132 if (ret)
2133 return ret;
2134 }
2135
2136 /* Clear existing WOW patterns */
2137 for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2138 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2139 WOW_LIST_ID, i);
2140
2141 /*
2142 * Skip the default WOW pattern configuration
2143 * if the driver receives any WOW patterns from
2144 * the user.
2145 */
2146 if (wow)
2147 ret = ath6kl_wow_usr(ar, vif, wow, filter);
2148 else if (vif->nw_type == AP_NETWORK)
2149 ret = ath6kl_wow_ap(ar, vif);
2150 else
2151 ret = ath6kl_wow_sta(ar, vif);
2152
2153 if (ret)
2154 return ret;
2155
2156 netif_stop_queue(vif->ndev);
2157
2158 if (vif->nw_type != AP_NETWORK) {
2159 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2160 ATH6KL_MAX_WOW_LISTEN_INTL,
2161 0);
2162 if (ret)
2163 return ret;
2164
2165 /* Set listen interval x 15 times as bmiss time */
2166 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2167 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2168 bmiss_time = ATH6KL_MAX_BMISS_TIME;
2169
2170 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2171 bmiss_time, 0);
2172 if (ret)
2173 return ret;
2174
2175 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2176 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2177 0, 0, 0, 0);
2178 if (ret)
2179 return ret;
2180 }
2181
2182 /* Setup own IP addr for ARP agent. */
2183 in_dev = __in_dev_get_rtnl(vif->ndev);
2184 if (!in_dev)
2185 return 0;
2186
2187 ifa = in_dev->ifa_list;
2188 memset(&ips, 0, sizeof(ips));
2189
2190 /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2191 while (index < MAX_IP_ADDRS && ifa) {
2192 ips[index] = ifa->ifa_local;
2193 ifa = ifa->ifa_next;
2194 index++;
2195 }
2196
2197 if (ifa) {
2198 ath6kl_err("total IP addr count is exceeding fw limit\n");
2199 return -EINVAL;
2200 }
2201
2202 ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2203 if (ret) {
2204 ath6kl_err("fail to setup ip for arp agent\n");
2205 return ret;
2206 }
2207
2208 return ret;
2209 }
2210
2211 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2212 {
2213 struct ath6kl_vif *first_vif, *vif;
2214 int ret = 0;
2215 u32 filter = 0;
2216 bool connected = false;
2217
2218 /* enter / leave wow suspend on first vif always */
2219 first_vif = ath6kl_vif_first(ar);
2220 if (WARN_ON(unlikely(!first_vif)) ||
2221 !ath6kl_cfg80211_ready(first_vif))
2222 return -EIO;
2223
2224 if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2225 return -EINVAL;
2226
2227 /* install filters for each connected vif */
2228 spin_lock_bh(&ar->list_lock);
2229 list_for_each_entry(vif, &ar->vif_list, list) {
2230 if (!test_bit(CONNECTED, &vif->flags) ||
2231 !ath6kl_cfg80211_ready(vif))
2232 continue;
2233 connected = true;
2234
2235 ret = ath6kl_wow_suspend_vif(vif, wow, &filter);
2236 if (ret)
2237 break;
2238 }
2239 spin_unlock_bh(&ar->list_lock);
2240
2241 if (!connected)
2242 return -ENOTCONN;
2243 else if (ret)
2244 return ret;
2245
2246 ar->state = ATH6KL_STATE_SUSPENDING;
2247
2248 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx,
2249 ATH6KL_WOW_MODE_ENABLE,
2250 filter,
2251 WOW_HOST_REQ_DELAY);
2252 if (ret)
2253 return ret;
2254
2255 return ath6kl_cfg80211_host_sleep(ar, first_vif);
2256 }
2257
2258 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif)
2259 {
2260 struct ath6kl *ar = vif->ar;
2261 int ret;
2262
2263 if (vif->nw_type != AP_NETWORK) {
2264 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2265 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2266 if (ret)
2267 return ret;
2268
2269 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2270 vif->listen_intvl_t, 0);
2271 if (ret)
2272 return ret;
2273
2274 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2275 vif->bmiss_time_t, 0);
2276 if (ret)
2277 return ret;
2278 }
2279
2280 if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2281 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2282 ar->fw_capabilities)) {
2283 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2284 vif->fw_vif_idx, true);
2285 if (ret)
2286 return ret;
2287 }
2288
2289 netif_wake_queue(vif->ndev);
2290
2291 return 0;
2292 }
2293
2294 static int ath6kl_wow_resume(struct ath6kl *ar)
2295 {
2296 struct ath6kl_vif *vif;
2297 int ret;
2298
2299 vif = ath6kl_vif_first(ar);
2300 if (WARN_ON(unlikely(!vif)) ||
2301 !ath6kl_cfg80211_ready(vif))
2302 return -EIO;
2303
2304 ar->state = ATH6KL_STATE_RESUMING;
2305
2306 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2307 ATH6KL_HOST_MODE_AWAKE);
2308 if (ret) {
2309 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2310 ret);
2311 goto cleanup;
2312 }
2313
2314 spin_lock_bh(&ar->list_lock);
2315 list_for_each_entry(vif, &ar->vif_list, list) {
2316 if (!test_bit(CONNECTED, &vif->flags) ||
2317 !ath6kl_cfg80211_ready(vif))
2318 continue;
2319 ret = ath6kl_wow_resume_vif(vif);
2320 if (ret)
2321 break;
2322 }
2323 spin_unlock_bh(&ar->list_lock);
2324
2325 if (ret)
2326 goto cleanup;
2327
2328 ar->state = ATH6KL_STATE_ON;
2329 return 0;
2330
2331 cleanup:
2332 ar->state = ATH6KL_STATE_WOW;
2333 return ret;
2334 }
2335
2336 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2337 {
2338 struct ath6kl_vif *vif;
2339 int ret;
2340
2341 vif = ath6kl_vif_first(ar);
2342 if (!vif)
2343 return -EIO;
2344
2345 if (!test_bit(WMI_READY, &ar->flag)) {
2346 ath6kl_err("deepsleep failed as wmi is not ready\n");
2347 return -EIO;
2348 }
2349
2350 ath6kl_cfg80211_stop_all(ar);
2351
2352 /* Save the current power mode before enabling power save */
2353 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2354
2355 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2356 if (ret)
2357 return ret;
2358
2359 /* Disable WOW mode */
2360 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2361 ATH6KL_WOW_MODE_DISABLE,
2362 0, 0);
2363 if (ret)
2364 return ret;
2365
2366 /* Flush all non control pkts in TX path */
2367 ath6kl_tx_data_cleanup(ar);
2368
2369 ret = ath6kl_cfg80211_host_sleep(ar, vif);
2370 if (ret)
2371 return ret;
2372
2373 return 0;
2374 }
2375
2376 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2377 {
2378 struct ath6kl_vif *vif;
2379 int ret;
2380
2381 vif = ath6kl_vif_first(ar);
2382
2383 if (!vif)
2384 return -EIO;
2385
2386 if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2387 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2388 ar->wmi->saved_pwr_mode);
2389 if (ret)
2390 return ret;
2391 }
2392
2393 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2394 ATH6KL_HOST_MODE_AWAKE);
2395 if (ret)
2396 return ret;
2397
2398 ar->state = ATH6KL_STATE_ON;
2399
2400 /* Reset scan parameter to default values */
2401 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2402 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2403 if (ret)
2404 return ret;
2405
2406 return 0;
2407 }
2408
2409 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2410 enum ath6kl_cfg_suspend_mode mode,
2411 struct cfg80211_wowlan *wow)
2412 {
2413 struct ath6kl_vif *vif;
2414 enum ath6kl_state prev_state;
2415 int ret;
2416
2417 switch (mode) {
2418 case ATH6KL_CFG_SUSPEND_WOW:
2419
2420 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2421
2422 /* Flush all non control pkts in TX path */
2423 ath6kl_tx_data_cleanup(ar);
2424
2425 prev_state = ar->state;
2426
2427 ret = ath6kl_wow_suspend(ar, wow);
2428 if (ret) {
2429 ar->state = prev_state;
2430 return ret;
2431 }
2432
2433 ar->state = ATH6KL_STATE_WOW;
2434 break;
2435
2436 case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2437
2438 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2439
2440 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2441 if (ret) {
2442 ath6kl_err("deepsleep suspend failed: %d\n", ret);
2443 return ret;
2444 }
2445
2446 ar->state = ATH6KL_STATE_DEEPSLEEP;
2447
2448 break;
2449
2450 case ATH6KL_CFG_SUSPEND_CUTPOWER:
2451
2452 ath6kl_cfg80211_stop_all(ar);
2453
2454 if (ar->state == ATH6KL_STATE_OFF) {
2455 ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2456 "suspend hw off, no action for cutpower\n");
2457 break;
2458 }
2459
2460 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2461
2462 ret = ath6kl_init_hw_stop(ar);
2463 if (ret) {
2464 ath6kl_warn("failed to stop hw during suspend: %d\n",
2465 ret);
2466 }
2467
2468 ar->state = ATH6KL_STATE_CUTPOWER;
2469
2470 break;
2471
2472 default:
2473 break;
2474 }
2475
2476 list_for_each_entry(vif, &ar->vif_list, list)
2477 ath6kl_cfg80211_scan_complete_event(vif, true);
2478
2479 return 0;
2480 }
2481 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2482
2483 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2484 {
2485 int ret;
2486
2487 switch (ar->state) {
2488 case ATH6KL_STATE_WOW:
2489 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2490
2491 ret = ath6kl_wow_resume(ar);
2492 if (ret) {
2493 ath6kl_warn("wow mode resume failed: %d\n", ret);
2494 return ret;
2495 }
2496
2497 break;
2498
2499 case ATH6KL_STATE_DEEPSLEEP:
2500 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2501
2502 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2503 if (ret) {
2504 ath6kl_warn("deep sleep resume failed: %d\n", ret);
2505 return ret;
2506 }
2507 break;
2508
2509 case ATH6KL_STATE_CUTPOWER:
2510 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2511
2512 ret = ath6kl_init_hw_start(ar);
2513 if (ret) {
2514 ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2515 return ret;
2516 }
2517 break;
2518
2519 default:
2520 break;
2521 }
2522
2523 return 0;
2524 }
2525 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2526
2527 #ifdef CONFIG_PM
2528
2529 /* hif layer decides what suspend mode to use */
2530 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2531 struct cfg80211_wowlan *wow)
2532 {
2533 struct ath6kl *ar = wiphy_priv(wiphy);
2534
2535 ath6kl_recovery_suspend(ar);
2536
2537 return ath6kl_hif_suspend(ar, wow);
2538 }
2539
2540 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2541 {
2542 struct ath6kl *ar = wiphy_priv(wiphy);
2543 int err;
2544
2545 err = ath6kl_hif_resume(ar);
2546 if (err)
2547 return err;
2548
2549 ath6kl_recovery_resume(ar);
2550
2551 return 0;
2552 }
2553
2554 /*
2555 * FIXME: WOW suspend mode is selected if the host sdio controller supports
2556 * both sdio irq wake up and keep power. The target pulls sdio data line to
2557 * wake up the host when WOW pattern matches. This causes sdio irq handler
2558 * is being called in the host side which internally hits ath6kl's RX path.
2559 *
2560 * Since sdio interrupt is not disabled, RX path executes even before
2561 * the host executes the actual resume operation from PM module.
2562 *
2563 * In the current scenario, WOW resume should happen before start processing
2564 * any data from the target. So It's required to perform WOW resume in RX path.
2565 * Ideally we should perform WOW resume only in the actual platform
2566 * resume path. This area needs bit rework to avoid WOW resume in RX path.
2567 *
2568 * ath6kl_check_wow_status() is called from ath6kl_rx().
2569 */
2570 void ath6kl_check_wow_status(struct ath6kl *ar)
2571 {
2572 if (ar->state == ATH6KL_STATE_SUSPENDING)
2573 return;
2574
2575 if (ar->state == ATH6KL_STATE_WOW)
2576 ath6kl_cfg80211_resume(ar);
2577 }
2578
2579 #else
2580
2581 void ath6kl_check_wow_status(struct ath6kl *ar)
2582 {
2583 }
2584 #endif
2585
2586 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum ieee80211_band band,
2587 bool ht_enable)
2588 {
2589 struct ath6kl_htcap *htcap = &vif->htcap[band];
2590
2591 if (htcap->ht_enable == ht_enable)
2592 return 0;
2593
2594 if (ht_enable) {
2595 /* Set default ht capabilities */
2596 htcap->ht_enable = true;
2597 htcap->cap_info = (band == IEEE80211_BAND_2GHZ) ?
2598 ath6kl_g_htcap : ath6kl_a_htcap;
2599 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2600 } else /* Disable ht */
2601 memset(htcap, 0, sizeof(*htcap));
2602
2603 return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2604 band, htcap);
2605 }
2606
2607 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2608 {
2609 struct wiphy *wiphy = vif->ar->wiphy;
2610 int band, ret = 0;
2611
2612 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2613 if (!wiphy->bands[band])
2614 continue;
2615
2616 ret = ath6kl_set_htcap(vif, band,
2617 wiphy->bands[band]->ht_cap.ht_supported);
2618 if (ret)
2619 return ret;
2620 }
2621
2622 return ret;
2623 }
2624
2625 static bool ath6kl_is_p2p_ie(const u8 *pos)
2626 {
2627 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2628 pos[2] == 0x50 && pos[3] == 0x6f &&
2629 pos[4] == 0x9a && pos[5] == 0x09;
2630 }
2631
2632 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2633 const u8 *ies, size_t ies_len)
2634 {
2635 struct ath6kl *ar = vif->ar;
2636 const u8 *pos;
2637 u8 *buf = NULL;
2638 size_t len = 0;
2639 int ret;
2640
2641 /*
2642 * Filter out P2P IE(s) since they will be included depending on
2643 * the Probe Request frame in ath6kl_send_go_probe_resp().
2644 */
2645
2646 if (ies && ies_len) {
2647 buf = kmalloc(ies_len, GFP_KERNEL);
2648 if (buf == NULL)
2649 return -ENOMEM;
2650 pos = ies;
2651 while (pos + 1 < ies + ies_len) {
2652 if (pos + 2 + pos[1] > ies + ies_len)
2653 break;
2654 if (!ath6kl_is_p2p_ie(pos)) {
2655 memcpy(buf + len, pos, 2 + pos[1]);
2656 len += 2 + pos[1];
2657 }
2658 pos += 2 + pos[1];
2659 }
2660 }
2661
2662 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2663 WMI_FRAME_PROBE_RESP, buf, len);
2664 kfree(buf);
2665 return ret;
2666 }
2667
2668 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2669 struct cfg80211_beacon_data *info)
2670 {
2671 struct ath6kl *ar = vif->ar;
2672 int res;
2673
2674 /* this also clears IE in fw if it's not set */
2675 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2676 WMI_FRAME_BEACON,
2677 info->beacon_ies,
2678 info->beacon_ies_len);
2679 if (res)
2680 return res;
2681
2682 /* this also clears IE in fw if it's not set */
2683 res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2684 info->proberesp_ies_len);
2685 if (res)
2686 return res;
2687
2688 /* this also clears IE in fw if it's not set */
2689 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2690 WMI_FRAME_ASSOC_RESP,
2691 info->assocresp_ies,
2692 info->assocresp_ies_len);
2693 if (res)
2694 return res;
2695
2696 return 0;
2697 }
2698
2699 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2700 u8 *rsn_capab)
2701 {
2702 const u8 *rsn_ie;
2703 size_t rsn_ie_len;
2704 u16 cnt;
2705
2706 if (!beacon->tail)
2707 return -EINVAL;
2708
2709 rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2710 if (!rsn_ie)
2711 return -EINVAL;
2712
2713 rsn_ie_len = *(rsn_ie + 1);
2714 /* skip element id and length */
2715 rsn_ie += 2;
2716
2717 /* skip version */
2718 if (rsn_ie_len < 2)
2719 return -EINVAL;
2720 rsn_ie += 2;
2721 rsn_ie_len -= 2;
2722
2723 /* skip group cipher suite */
2724 if (rsn_ie_len < 4)
2725 return 0;
2726 rsn_ie += 4;
2727 rsn_ie_len -= 4;
2728
2729 /* skip pairwise cipher suite */
2730 if (rsn_ie_len < 2)
2731 return 0;
2732 cnt = get_unaligned_le16(rsn_ie);
2733 rsn_ie += (2 + cnt * 4);
2734 rsn_ie_len -= (2 + cnt * 4);
2735
2736 /* skip akm suite */
2737 if (rsn_ie_len < 2)
2738 return 0;
2739 cnt = get_unaligned_le16(rsn_ie);
2740 rsn_ie += (2 + cnt * 4);
2741 rsn_ie_len -= (2 + cnt * 4);
2742
2743 if (rsn_ie_len < 2)
2744 return 0;
2745
2746 memcpy(rsn_capab, rsn_ie, 2);
2747
2748 return 0;
2749 }
2750
2751 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2752 struct cfg80211_ap_settings *info)
2753 {
2754 struct ath6kl *ar = ath6kl_priv(dev);
2755 struct ath6kl_vif *vif = netdev_priv(dev);
2756 struct ieee80211_mgmt *mgmt;
2757 bool hidden = false;
2758 u8 *ies;
2759 int ies_len;
2760 struct wmi_connect_cmd p;
2761 int res;
2762 int i, ret;
2763 u16 rsn_capab = 0;
2764 int inactivity_timeout = 0;
2765
2766 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2767
2768 if (!ath6kl_cfg80211_ready(vif))
2769 return -EIO;
2770
2771 if (vif->next_mode != AP_NETWORK)
2772 return -EOPNOTSUPP;
2773
2774 res = ath6kl_set_ies(vif, &info->beacon);
2775
2776 ar->ap_mode_bkey.valid = false;
2777
2778 ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx,
2779 info->beacon_interval);
2780
2781 if (ret)
2782 ath6kl_warn("Failed to set beacon interval: %d\n", ret);
2783
2784 ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2785 info->dtim_period);
2786
2787 /* ignore error, just print a warning and continue normally */
2788 if (ret)
2789 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2790
2791 if (info->beacon.head == NULL)
2792 return -EINVAL;
2793 mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2794 ies = mgmt->u.beacon.variable;
2795 if (ies > info->beacon.head + info->beacon.head_len)
2796 return -EINVAL;
2797 ies_len = info->beacon.head + info->beacon.head_len - ies;
2798
2799 if (info->ssid == NULL)
2800 return -EINVAL;
2801 memcpy(vif->ssid, info->ssid, info->ssid_len);
2802 vif->ssid_len = info->ssid_len;
2803 if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2804 hidden = true;
2805
2806 res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2807 if (res)
2808 return res;
2809
2810 ret = ath6kl_set_auth_type(vif, info->auth_type);
2811 if (ret)
2812 return ret;
2813
2814 memset(&p, 0, sizeof(p));
2815
2816 for (i = 0; i < info->crypto.n_akm_suites; i++) {
2817 switch (info->crypto.akm_suites[i]) {
2818 case WLAN_AKM_SUITE_8021X:
2819 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2820 p.auth_mode |= WPA_AUTH;
2821 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2822 p.auth_mode |= WPA2_AUTH;
2823 break;
2824 case WLAN_AKM_SUITE_PSK:
2825 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2826 p.auth_mode |= WPA_PSK_AUTH;
2827 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2828 p.auth_mode |= WPA2_PSK_AUTH;
2829 break;
2830 }
2831 }
2832 if (p.auth_mode == 0)
2833 p.auth_mode = NONE_AUTH;
2834 vif->auth_mode = p.auth_mode;
2835
2836 for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2837 switch (info->crypto.ciphers_pairwise[i]) {
2838 case WLAN_CIPHER_SUITE_WEP40:
2839 case WLAN_CIPHER_SUITE_WEP104:
2840 p.prwise_crypto_type |= WEP_CRYPT;
2841 break;
2842 case WLAN_CIPHER_SUITE_TKIP:
2843 p.prwise_crypto_type |= TKIP_CRYPT;
2844 break;
2845 case WLAN_CIPHER_SUITE_CCMP:
2846 p.prwise_crypto_type |= AES_CRYPT;
2847 break;
2848 case WLAN_CIPHER_SUITE_SMS4:
2849 p.prwise_crypto_type |= WAPI_CRYPT;
2850 break;
2851 }
2852 }
2853 if (p.prwise_crypto_type == 0) {
2854 p.prwise_crypto_type = NONE_CRYPT;
2855 ath6kl_set_cipher(vif, 0, true);
2856 } else if (info->crypto.n_ciphers_pairwise == 1) {
2857 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2858 }
2859
2860 switch (info->crypto.cipher_group) {
2861 case WLAN_CIPHER_SUITE_WEP40:
2862 case WLAN_CIPHER_SUITE_WEP104:
2863 p.grp_crypto_type = WEP_CRYPT;
2864 break;
2865 case WLAN_CIPHER_SUITE_TKIP:
2866 p.grp_crypto_type = TKIP_CRYPT;
2867 break;
2868 case WLAN_CIPHER_SUITE_CCMP:
2869 p.grp_crypto_type = AES_CRYPT;
2870 break;
2871 case WLAN_CIPHER_SUITE_SMS4:
2872 p.grp_crypto_type = WAPI_CRYPT;
2873 break;
2874 default:
2875 p.grp_crypto_type = NONE_CRYPT;
2876 break;
2877 }
2878 ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2879
2880 p.nw_type = AP_NETWORK;
2881 vif->nw_type = vif->next_mode;
2882
2883 p.ssid_len = vif->ssid_len;
2884 memcpy(p.ssid, vif->ssid, vif->ssid_len);
2885 p.dot11_auth_mode = vif->dot11_auth_mode;
2886 p.ch = cpu_to_le16(info->chandef.chan->center_freq);
2887
2888 /* Enable uAPSD support by default */
2889 res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2890 if (res < 0)
2891 return res;
2892
2893 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2894 p.nw_subtype = SUBTYPE_P2PGO;
2895 } else {
2896 /*
2897 * Due to firmware limitation, it is not possible to
2898 * do P2P mgmt operations in AP mode
2899 */
2900 p.nw_subtype = SUBTYPE_NONE;
2901 }
2902
2903 if (info->inactivity_timeout) {
2904 inactivity_timeout = info->inactivity_timeout;
2905
2906 if (test_bit(ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS,
2907 ar->fw_capabilities))
2908 inactivity_timeout = DIV_ROUND_UP(inactivity_timeout,
2909 60);
2910
2911 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2912 inactivity_timeout);
2913 if (res < 0)
2914 return res;
2915 }
2916
2917 if (ath6kl_set_htcap(vif, info->chandef.chan->band,
2918 cfg80211_get_chandef_type(&info->chandef)
2919 != NL80211_CHAN_NO_HT))
2920 return -EIO;
2921
2922 /*
2923 * Get the PTKSA replay counter in the RSN IE. Supplicant
2924 * will use the RSN IE in M3 message and firmware has to
2925 * advertise the same in beacon/probe response. Send
2926 * the complete RSN IE capability field to firmware
2927 */
2928 if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2929 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2930 ar->fw_capabilities)) {
2931 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2932 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2933 (const u8 *) &rsn_capab,
2934 sizeof(rsn_capab));
2935 vif->rsn_capab = rsn_capab;
2936 if (res < 0)
2937 return res;
2938 }
2939
2940 memcpy(&vif->profile, &p, sizeof(p));
2941 res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2942 if (res < 0)
2943 return res;
2944
2945 return 0;
2946 }
2947
2948 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2949 struct cfg80211_beacon_data *beacon)
2950 {
2951 struct ath6kl_vif *vif = netdev_priv(dev);
2952
2953 if (!ath6kl_cfg80211_ready(vif))
2954 return -EIO;
2955
2956 if (vif->next_mode != AP_NETWORK)
2957 return -EOPNOTSUPP;
2958
2959 return ath6kl_set_ies(vif, beacon);
2960 }
2961
2962 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2963 {
2964 struct ath6kl *ar = ath6kl_priv(dev);
2965 struct ath6kl_vif *vif = netdev_priv(dev);
2966
2967 if (vif->nw_type != AP_NETWORK)
2968 return -EOPNOTSUPP;
2969 if (!test_bit(CONNECTED, &vif->flags))
2970 return -ENOTCONN;
2971
2972 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2973 clear_bit(CONNECTED, &vif->flags);
2974
2975 /* Restore ht setting in firmware */
2976 return ath6kl_restore_htcap(vif);
2977 }
2978
2979 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2980
2981 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2982 struct station_del_parameters *params)
2983 {
2984 struct ath6kl *ar = ath6kl_priv(dev);
2985 struct ath6kl_vif *vif = netdev_priv(dev);
2986 const u8 *addr = params->mac ? params->mac : bcast_addr;
2987
2988 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2989 addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2990 }
2991
2992 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
2993 const u8 *mac,
2994 struct station_parameters *params)
2995 {
2996 struct ath6kl *ar = ath6kl_priv(dev);
2997 struct ath6kl_vif *vif = netdev_priv(dev);
2998 int err;
2999
3000 if (vif->nw_type != AP_NETWORK)
3001 return -EOPNOTSUPP;
3002
3003 err = cfg80211_check_station_change(wiphy, params,
3004 CFG80211_STA_AP_MLME_CLIENT);
3005 if (err)
3006 return err;
3007
3008 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
3009 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3010 WMI_AP_MLME_AUTHORIZE, mac, 0);
3011 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3012 WMI_AP_MLME_UNAUTHORIZE, mac, 0);
3013 }
3014
3015 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
3016 struct wireless_dev *wdev,
3017 struct ieee80211_channel *chan,
3018 unsigned int duration,
3019 u64 *cookie)
3020 {
3021 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3022 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3023 u32 id;
3024
3025 /* TODO: if already pending or ongoing remain-on-channel,
3026 * return -EBUSY */
3027 id = ++vif->last_roc_id;
3028 if (id == 0) {
3029 /* Do not use 0 as the cookie value */
3030 id = ++vif->last_roc_id;
3031 }
3032 *cookie = id;
3033
3034 return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
3035 chan->center_freq, duration);
3036 }
3037
3038 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3039 struct wireless_dev *wdev,
3040 u64 cookie)
3041 {
3042 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3043 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3044
3045 if (cookie != vif->last_roc_id)
3046 return -ENOENT;
3047 vif->last_cancel_roc_id = cookie;
3048
3049 return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3050 }
3051
3052 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3053 const u8 *buf, size_t len,
3054 unsigned int freq)
3055 {
3056 struct ath6kl *ar = vif->ar;
3057 const u8 *pos;
3058 u8 *p2p;
3059 int p2p_len;
3060 int ret;
3061 const struct ieee80211_mgmt *mgmt;
3062
3063 mgmt = (const struct ieee80211_mgmt *) buf;
3064
3065 /* Include P2P IE(s) from the frame generated in user space. */
3066
3067 p2p = kmalloc(len, GFP_KERNEL);
3068 if (p2p == NULL)
3069 return -ENOMEM;
3070 p2p_len = 0;
3071
3072 pos = mgmt->u.probe_resp.variable;
3073 while (pos + 1 < buf + len) {
3074 if (pos + 2 + pos[1] > buf + len)
3075 break;
3076 if (ath6kl_is_p2p_ie(pos)) {
3077 memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3078 p2p_len += 2 + pos[1];
3079 }
3080 pos += 2 + pos[1];
3081 }
3082
3083 ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
3084 mgmt->da, p2p, p2p_len);
3085 kfree(p2p);
3086 return ret;
3087 }
3088
3089 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
3090 u32 id,
3091 u32 freq,
3092 u32 wait,
3093 const u8 *buf,
3094 size_t len,
3095 bool *more_data,
3096 bool no_cck)
3097 {
3098 struct ieee80211_mgmt *mgmt;
3099 struct ath6kl_sta *conn;
3100 bool is_psq_empty = false;
3101 struct ath6kl_mgmt_buff *mgmt_buf;
3102 size_t mgmt_buf_size;
3103 struct ath6kl *ar = vif->ar;
3104
3105 mgmt = (struct ieee80211_mgmt *) buf;
3106 if (is_multicast_ether_addr(mgmt->da))
3107 return false;
3108
3109 conn = ath6kl_find_sta(vif, mgmt->da);
3110 if (!conn)
3111 return false;
3112
3113 if (conn->sta_flags & STA_PS_SLEEP) {
3114 if (!(conn->sta_flags & STA_PS_POLLED)) {
3115 /* Queue the frames if the STA is sleeping */
3116 mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3117 mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3118 if (!mgmt_buf)
3119 return false;
3120
3121 INIT_LIST_HEAD(&mgmt_buf->list);
3122 mgmt_buf->id = id;
3123 mgmt_buf->freq = freq;
3124 mgmt_buf->wait = wait;
3125 mgmt_buf->len = len;
3126 mgmt_buf->no_cck = no_cck;
3127 memcpy(mgmt_buf->buf, buf, len);
3128 spin_lock_bh(&conn->psq_lock);
3129 is_psq_empty = skb_queue_empty(&conn->psq) &&
3130 (conn->mgmt_psq_len == 0);
3131 list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3132 conn->mgmt_psq_len++;
3133 spin_unlock_bh(&conn->psq_lock);
3134
3135 /*
3136 * If this is the first pkt getting queued
3137 * for this STA, update the PVB for this
3138 * STA.
3139 */
3140 if (is_psq_empty)
3141 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3142 conn->aid, 1);
3143 return true;
3144 }
3145
3146 /*
3147 * This tx is because of a PsPoll.
3148 * Determine if MoreData bit has to be set.
3149 */
3150 spin_lock_bh(&conn->psq_lock);
3151 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3152 *more_data = true;
3153 spin_unlock_bh(&conn->psq_lock);
3154 }
3155
3156 return false;
3157 }
3158
3159 /* Check if SSID length is greater than DIRECT- */
3160 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3161 {
3162 const struct ieee80211_mgmt *mgmt;
3163 mgmt = (const struct ieee80211_mgmt *) buf;
3164
3165 /* variable[1] contains the SSID tag length */
3166 if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3167 (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3168 return true;
3169 }
3170
3171 return false;
3172 }
3173
3174 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3175 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
3176 {
3177 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3178 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3179 struct ieee80211_channel *chan = params->chan;
3180 const u8 *buf = params->buf;
3181 size_t len = params->len;
3182 unsigned int wait = params->wait;
3183 bool no_cck = params->no_cck;
3184 u32 id, freq;
3185 const struct ieee80211_mgmt *mgmt;
3186 bool more_data, queued;
3187
3188 /* default to the current channel, but use the one specified as argument
3189 * if any
3190 */
3191 freq = vif->ch_hint;
3192 if (chan)
3193 freq = chan->center_freq;
3194
3195 /* never send freq zero to the firmware */
3196 if (WARN_ON(freq == 0))
3197 return -EINVAL;
3198
3199 mgmt = (const struct ieee80211_mgmt *) buf;
3200 if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3201 ieee80211_is_probe_resp(mgmt->frame_control) &&
3202 ath6kl_is_p2p_go_ssid(buf, len)) {
3203 /*
3204 * Send Probe Response frame in GO mode using a separate WMI
3205 * command to allow the target to fill in the generic IEs.
3206 */
3207 *cookie = 0; /* TX status not supported */
3208 return ath6kl_send_go_probe_resp(vif, buf, len, freq);
3209 }
3210
3211 id = vif->send_action_id++;
3212 if (id == 0) {
3213 /*
3214 * 0 is a reserved value in the WMI command and shall not be
3215 * used for the command.
3216 */
3217 id = vif->send_action_id++;
3218 }
3219
3220 *cookie = id;
3221
3222 /* AP mode Power saving processing */
3223 if (vif->nw_type == AP_NETWORK) {
3224 queued = ath6kl_mgmt_powersave_ap(vif, id, freq, wait, buf, len,
3225 &more_data, no_cck);
3226 if (queued)
3227 return 0;
3228 }
3229
3230 return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id, freq,
3231 wait, buf, len, no_cck);
3232 }
3233
3234 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3235 struct wireless_dev *wdev,
3236 u16 frame_type, bool reg)
3237 {
3238 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3239
3240 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3241 __func__, frame_type, reg);
3242 if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3243 /*
3244 * Note: This notification callback is not allowed to sleep, so
3245 * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3246 * hardcode target to report Probe Request frames all the time.
3247 */
3248 vif->probe_req_report = reg;
3249 }
3250 }
3251
3252 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3253 struct net_device *dev,
3254 struct cfg80211_sched_scan_request *request)
3255 {
3256 struct ath6kl *ar = ath6kl_priv(dev);
3257 struct ath6kl_vif *vif = netdev_priv(dev);
3258 u16 interval;
3259 int ret, rssi_thold;
3260 int n_match_sets = request->n_match_sets;
3261
3262 /*
3263 * If there's a matchset w/o an SSID, then assume it's just for
3264 * the RSSI (nothing else is currently supported) and ignore it.
3265 * The device only supports a global RSSI filter that we set below.
3266 */
3267 if (n_match_sets == 1 && !request->match_sets[0].ssid.ssid_len)
3268 n_match_sets = 0;
3269
3270 if (ar->state != ATH6KL_STATE_ON)
3271 return -EIO;
3272
3273 if (vif->sme_state != SME_DISCONNECTED)
3274 return -EBUSY;
3275
3276 ath6kl_cfg80211_scan_complete_event(vif, true);
3277
3278 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3279 request->n_ssids,
3280 request->match_sets,
3281 n_match_sets);
3282 if (ret < 0)
3283 return ret;
3284
3285 if (!n_match_sets) {
3286 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3287 ALL_BSS_FILTER, 0);
3288 if (ret < 0)
3289 return ret;
3290 } else {
3291 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3292 MATCHED_SSID_FILTER, 0);
3293 if (ret < 0)
3294 return ret;
3295 }
3296
3297 if (test_bit(ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD,
3298 ar->fw_capabilities)) {
3299 if (request->min_rssi_thold <= NL80211_SCAN_RSSI_THOLD_OFF)
3300 rssi_thold = 0;
3301 else if (request->min_rssi_thold < -127)
3302 rssi_thold = -127;
3303 else
3304 rssi_thold = request->min_rssi_thold;
3305
3306 ret = ath6kl_wmi_set_rssi_filter_cmd(ar->wmi, vif->fw_vif_idx,
3307 rssi_thold);
3308 if (ret) {
3309 ath6kl_err("failed to set RSSI threshold for scan\n");
3310 return ret;
3311 }
3312 }
3313
3314 /* fw uses seconds, also make sure that it's >0 */
3315 interval = max_t(u16, 1, request->interval / 1000);
3316
3317 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3318 interval, interval,
3319 vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3320
3321 /* this also clears IE in fw if it's not set */
3322 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3323 WMI_FRAME_PROBE_REQ,
3324 request->ie, request->ie_len);
3325 if (ret) {
3326 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n",
3327 ret);
3328 return ret;
3329 }
3330
3331 ret = ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, true);
3332 if (ret)
3333 return ret;
3334
3335 set_bit(SCHED_SCANNING, &vif->flags);
3336
3337 return 0;
3338 }
3339
3340 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3341 struct net_device *dev)
3342 {
3343 struct ath6kl_vif *vif = netdev_priv(dev);
3344 bool stopped;
3345
3346 stopped = __ath6kl_cfg80211_sscan_stop(vif);
3347
3348 if (!stopped)
3349 return -EIO;
3350
3351 return 0;
3352 }
3353
3354 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy,
3355 struct net_device *dev,
3356 const u8 *addr,
3357 const struct cfg80211_bitrate_mask *mask)
3358 {
3359 struct ath6kl *ar = ath6kl_priv(dev);
3360 struct ath6kl_vif *vif = netdev_priv(dev);
3361
3362 return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx,
3363 mask);
3364 }
3365
3366 static int ath6kl_cfg80211_set_txe_config(struct wiphy *wiphy,
3367 struct net_device *dev,
3368 u32 rate, u32 pkts, u32 intvl)
3369 {
3370 struct ath6kl *ar = ath6kl_priv(dev);
3371 struct ath6kl_vif *vif = netdev_priv(dev);
3372
3373 if (vif->nw_type != INFRA_NETWORK ||
3374 !test_bit(ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, ar->fw_capabilities))
3375 return -EOPNOTSUPP;
3376
3377 if (vif->sme_state != SME_CONNECTED)
3378 return -ENOTCONN;
3379
3380 /* save this since the firmware won't report the interval */
3381 vif->txe_intvl = intvl;
3382
3383 return ath6kl_wmi_set_txe_notify(ar->wmi, vif->fw_vif_idx,
3384 rate, pkts, intvl);
3385 }
3386
3387 static const struct ieee80211_txrx_stypes
3388 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3389 [NL80211_IFTYPE_STATION] = {
3390 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3391 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3392 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3393 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3394 },
3395 [NL80211_IFTYPE_AP] = {
3396 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3397 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3398 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3399 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3400 },
3401 [NL80211_IFTYPE_P2P_CLIENT] = {
3402 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3403 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3404 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3405 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3406 },
3407 [NL80211_IFTYPE_P2P_GO] = {
3408 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3409 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3410 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3411 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3412 },
3413 };
3414
3415 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3416 .add_virtual_intf = ath6kl_cfg80211_add_iface,
3417 .del_virtual_intf = ath6kl_cfg80211_del_iface,
3418 .change_virtual_intf = ath6kl_cfg80211_change_iface,
3419 .scan = ath6kl_cfg80211_scan,
3420 .connect = ath6kl_cfg80211_connect,
3421 .disconnect = ath6kl_cfg80211_disconnect,
3422 .add_key = ath6kl_cfg80211_add_key,
3423 .get_key = ath6kl_cfg80211_get_key,
3424 .del_key = ath6kl_cfg80211_del_key,
3425 .set_default_key = ath6kl_cfg80211_set_default_key,
3426 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3427 .set_tx_power = ath6kl_cfg80211_set_txpower,
3428 .get_tx_power = ath6kl_cfg80211_get_txpower,
3429 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3430 .join_ibss = ath6kl_cfg80211_join_ibss,
3431 .leave_ibss = ath6kl_cfg80211_leave_ibss,
3432 .get_station = ath6kl_get_station,
3433 .set_pmksa = ath6kl_set_pmksa,
3434 .del_pmksa = ath6kl_del_pmksa,
3435 .flush_pmksa = ath6kl_flush_pmksa,
3436 CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3437 #ifdef CONFIG_PM
3438 .suspend = __ath6kl_cfg80211_suspend,
3439 .resume = __ath6kl_cfg80211_resume,
3440 #endif
3441 .start_ap = ath6kl_start_ap,
3442 .change_beacon = ath6kl_change_beacon,
3443 .stop_ap = ath6kl_stop_ap,
3444 .del_station = ath6kl_del_station,
3445 .change_station = ath6kl_change_station,
3446 .remain_on_channel = ath6kl_remain_on_channel,
3447 .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3448 .mgmt_tx = ath6kl_mgmt_tx,
3449 .mgmt_frame_register = ath6kl_mgmt_frame_register,
3450 .sched_scan_start = ath6kl_cfg80211_sscan_start,
3451 .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3452 .set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
3453 .set_cqm_txe_config = ath6kl_cfg80211_set_txe_config,
3454 };
3455
3456 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3457 {
3458 ath6kl_cfg80211_sscan_disable(vif);
3459
3460 switch (vif->sme_state) {
3461 case SME_DISCONNECTED:
3462 break;
3463 case SME_CONNECTING:
3464 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3465 NULL, 0,
3466 WLAN_STATUS_UNSPECIFIED_FAILURE,
3467 GFP_KERNEL);
3468 break;
3469 case SME_CONNECTED:
3470 cfg80211_disconnected(vif->ndev, 0, NULL, 0, true, GFP_KERNEL);
3471 break;
3472 }
3473
3474 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3475 (test_bit(CONNECTED, &vif->flags) ||
3476 test_bit(CONNECT_PEND, &vif->flags)))
3477 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3478
3479 vif->sme_state = SME_DISCONNECTED;
3480 clear_bit(CONNECTED, &vif->flags);
3481 clear_bit(CONNECT_PEND, &vif->flags);
3482
3483 /* Stop netdev queues, needed during recovery */
3484 netif_stop_queue(vif->ndev);
3485 netif_carrier_off(vif->ndev);
3486
3487 /* disable scanning */
3488 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3489 ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3490 0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3491 ath6kl_warn("failed to disable scan during stop\n");
3492
3493 ath6kl_cfg80211_scan_complete_event(vif, true);
3494 }
3495
3496 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3497 {
3498 struct ath6kl_vif *vif;
3499
3500 vif = ath6kl_vif_first(ar);
3501 if (!vif && ar->state != ATH6KL_STATE_RECOVERY) {
3502 /* save the current power mode before enabling power save */
3503 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3504
3505 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3506 ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3507 return;
3508 }
3509
3510 /*
3511 * FIXME: we should take ar->list_lock to protect changes in the
3512 * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3513 * sleeps.
3514 */
3515 list_for_each_entry(vif, &ar->vif_list, list)
3516 ath6kl_cfg80211_stop(vif);
3517 }
3518
3519 static void ath6kl_cfg80211_reg_notify(struct wiphy *wiphy,
3520 struct regulatory_request *request)
3521 {
3522 struct ath6kl *ar = wiphy_priv(wiphy);
3523 u32 rates[IEEE80211_NUM_BANDS];
3524 int ret, i;
3525
3526 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
3527 "cfg reg_notify %c%c%s%s initiator %d hint_type %d\n",
3528 request->alpha2[0], request->alpha2[1],
3529 request->intersect ? " intersect" : "",
3530 request->processed ? " processed" : "",
3531 request->initiator, request->user_reg_hint_type);
3532
3533 if (request->user_reg_hint_type != NL80211_USER_REG_HINT_CELL_BASE)
3534 return;
3535
3536 ret = ath6kl_wmi_set_regdomain_cmd(ar->wmi, request->alpha2);
3537 if (ret) {
3538 ath6kl_err("failed to set regdomain: %d\n", ret);
3539 return;
3540 }
3541
3542 /*
3543 * Firmware will apply the regdomain change only after a scan is
3544 * issued and it will send a WMI_REGDOMAIN_EVENTID when it has been
3545 * changed.
3546 */
3547
3548 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3549 if (wiphy->bands[i])
3550 rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
3551
3552
3553 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, 0, WMI_LONG_SCAN, false,
3554 false, 0, ATH6KL_FG_SCAN_INTERVAL,
3555 0, NULL, false, rates);
3556 if (ret) {
3557 ath6kl_err("failed to start scan for a regdomain change: %d\n",
3558 ret);
3559 return;
3560 }
3561 }
3562
3563 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3564 {
3565 vif->aggr_cntxt = aggr_init(vif);
3566 if (!vif->aggr_cntxt) {
3567 ath6kl_err("failed to initialize aggr\n");
3568 return -ENOMEM;
3569 }
3570
3571 setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3572 (unsigned long) vif->ndev);
3573 setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3574 (unsigned long) vif);
3575
3576 set_bit(WMM_ENABLED, &vif->flags);
3577 spin_lock_init(&vif->if_lock);
3578
3579 INIT_LIST_HEAD(&vif->mc_filter);
3580
3581 return 0;
3582 }
3583
3584 void ath6kl_cfg80211_vif_stop(struct ath6kl_vif *vif, bool wmi_ready)
3585 {
3586 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
3587 bool discon_issued;
3588
3589 netif_stop_queue(vif->ndev);
3590
3591 clear_bit(WLAN_ENABLED, &vif->flags);
3592
3593 if (wmi_ready) {
3594 discon_issued = test_bit(CONNECTED, &vif->flags) ||
3595 test_bit(CONNECT_PEND, &vif->flags);
3596 ath6kl_disconnect(vif);
3597 del_timer(&vif->disconnect_timer);
3598
3599 if (discon_issued)
3600 ath6kl_disconnect_event(vif, DISCONNECT_CMD,
3601 (vif->nw_type & AP_NETWORK) ?
3602 bcast_mac : vif->bssid,
3603 0, NULL, 0);
3604 }
3605
3606 if (vif->scan_req) {
3607 cfg80211_scan_done(vif->scan_req, true);
3608 vif->scan_req = NULL;
3609 }
3610
3611 /* need to clean up enhanced bmiss detection fw state */
3612 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
3613 }
3614
3615 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3616 {
3617 struct ath6kl *ar = vif->ar;
3618 struct ath6kl_mc_filter *mc_filter, *tmp;
3619
3620 aggr_module_destroy(vif->aggr_cntxt);
3621
3622 ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3623
3624 if (vif->nw_type == ADHOC_NETWORK)
3625 ar->ibss_if_active = false;
3626
3627 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3628 list_del(&mc_filter->list);
3629 kfree(mc_filter);
3630 }
3631
3632 unregister_netdevice(vif->ndev);
3633
3634 ar->num_vif--;
3635 }
3636
3637 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
3638 unsigned char name_assign_type,
3639 enum nl80211_iftype type,
3640 u8 fw_vif_idx, u8 nw_type)
3641 {
3642 struct net_device *ndev;
3643 struct ath6kl_vif *vif;
3644
3645 ndev = alloc_netdev(sizeof(*vif), name, name_assign_type, ether_setup);
3646 if (!ndev)
3647 return NULL;
3648
3649 vif = netdev_priv(ndev);
3650 ndev->ieee80211_ptr = &vif->wdev;
3651 vif->wdev.wiphy = ar->wiphy;
3652 vif->ar = ar;
3653 vif->ndev = ndev;
3654 SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3655 vif->wdev.netdev = ndev;
3656 vif->wdev.iftype = type;
3657 vif->fw_vif_idx = fw_vif_idx;
3658 vif->nw_type = nw_type;
3659 vif->next_mode = nw_type;
3660 vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3661 vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3662 vif->bg_scan_period = 0;
3663 vif->htcap[IEEE80211_BAND_2GHZ].ht_enable = true;
3664 vif->htcap[IEEE80211_BAND_5GHZ].ht_enable = true;
3665
3666 memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3667 if (fw_vif_idx != 0) {
3668 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3669 0x2;
3670 if (test_bit(ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR,
3671 ar->fw_capabilities))
3672 ndev->dev_addr[4] ^= 0x80;
3673 }
3674
3675 init_netdev(ndev);
3676
3677 ath6kl_init_control_info(vif);
3678
3679 if (ath6kl_cfg80211_vif_init(vif))
3680 goto err;
3681
3682 if (register_netdevice(ndev))
3683 goto err;
3684
3685 ar->avail_idx_map &= ~BIT(fw_vif_idx);
3686 vif->sme_state = SME_DISCONNECTED;
3687 set_bit(WLAN_ENABLED, &vif->flags);
3688 ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3689
3690 if (type == NL80211_IFTYPE_ADHOC)
3691 ar->ibss_if_active = true;
3692
3693 spin_lock_bh(&ar->list_lock);
3694 list_add_tail(&vif->list, &ar->vif_list);
3695 spin_unlock_bh(&ar->list_lock);
3696
3697 return &vif->wdev;
3698
3699 err:
3700 aggr_module_destroy(vif->aggr_cntxt);
3701 free_netdev(ndev);
3702 return NULL;
3703 }
3704
3705 #ifdef CONFIG_PM
3706 static const struct wiphy_wowlan_support ath6kl_wowlan_support = {
3707 .flags = WIPHY_WOWLAN_MAGIC_PKT |
3708 WIPHY_WOWLAN_DISCONNECT |
3709 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
3710 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
3711 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
3712 WIPHY_WOWLAN_4WAY_HANDSHAKE,
3713 .n_patterns = WOW_MAX_FILTERS_PER_LIST,
3714 .pattern_min_len = 1,
3715 .pattern_max_len = WOW_PATTERN_SIZE,
3716 };
3717 #endif
3718
3719 int ath6kl_cfg80211_init(struct ath6kl *ar)
3720 {
3721 struct wiphy *wiphy = ar->wiphy;
3722 bool band_2gig = false, band_5gig = false, ht = false;
3723 int ret;
3724
3725 wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3726
3727 wiphy->max_remain_on_channel_duration = 5000;
3728
3729 /* set device pointer for wiphy */
3730 set_wiphy_dev(wiphy, ar->dev);
3731
3732 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3733 BIT(NL80211_IFTYPE_ADHOC) |
3734 BIT(NL80211_IFTYPE_AP);
3735 if (ar->p2p) {
3736 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3737 BIT(NL80211_IFTYPE_P2P_CLIENT);
3738 }
3739
3740 if (config_enabled(CONFIG_ATH6KL_REGDOMAIN) &&
3741 test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) {
3742 wiphy->reg_notifier = ath6kl_cfg80211_reg_notify;
3743 ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS;
3744 }
3745
3746 /* max num of ssids that can be probed during scanning */
3747 wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3748
3749 /* max num of ssids that can be matched after scan */
3750 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST,
3751 ar->fw_capabilities))
3752 wiphy->max_match_sets = MAX_PROBED_SSIDS;
3753
3754 wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3755 switch (ar->hw.cap) {
3756 case WMI_11AN_CAP:
3757 ht = true;
3758 case WMI_11A_CAP:
3759 band_5gig = true;
3760 break;
3761 case WMI_11GN_CAP:
3762 ht = true;
3763 case WMI_11G_CAP:
3764 band_2gig = true;
3765 break;
3766 case WMI_11AGN_CAP:
3767 ht = true;
3768 case WMI_11AG_CAP:
3769 band_2gig = true;
3770 band_5gig = true;
3771 break;
3772 default:
3773 ath6kl_err("invalid phy capability!\n");
3774 return -EINVAL;
3775 }
3776
3777 /*
3778 * Even if the fw has HT support, advertise HT cap only when
3779 * the firmware has support to override RSN capability, otherwise
3780 * 4-way handshake would fail.
3781 */
3782 if (!(ht &&
3783 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3784 ar->fw_capabilities))) {
3785 ath6kl_band_2ghz.ht_cap.cap = 0;
3786 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3787 ath6kl_band_5ghz.ht_cap.cap = 0;
3788 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3789 }
3790
3791 if (test_bit(ATH6KL_FW_CAPABILITY_64BIT_RATES,
3792 ar->fw_capabilities)) {
3793 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3794 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3795 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3796 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3797 } else {
3798 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3799 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3800 }
3801
3802 if (band_2gig)
3803 wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3804 if (band_5gig)
3805 wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3806
3807 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3808
3809 wiphy->cipher_suites = cipher_suites;
3810 wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3811
3812 #ifdef CONFIG_PM
3813 wiphy->wowlan = &ath6kl_wowlan_support;
3814 #endif
3815
3816 wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3817
3818 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3819 WIPHY_FLAG_HAVE_AP_SME |
3820 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3821 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3822
3823 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities))
3824 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
3825
3826 if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3827 ar->fw_capabilities))
3828 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
3829
3830 ar->wiphy->probe_resp_offload =
3831 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3832 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3833 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3834
3835 ret = wiphy_register(wiphy);
3836 if (ret < 0) {
3837 ath6kl_err("couldn't register wiphy device\n");
3838 return ret;
3839 }
3840
3841 ar->wiphy_registered = true;
3842
3843 return 0;
3844 }
3845
3846 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
3847 {
3848 wiphy_unregister(ar->wiphy);
3849
3850 ar->wiphy_registered = false;
3851 }
3852
3853 struct ath6kl *ath6kl_cfg80211_create(void)
3854 {
3855 struct ath6kl *ar;
3856 struct wiphy *wiphy;
3857
3858 /* create a new wiphy for use with cfg80211 */
3859 wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
3860
3861 if (!wiphy) {
3862 ath6kl_err("couldn't allocate wiphy device\n");
3863 return NULL;
3864 }
3865
3866 ar = wiphy_priv(wiphy);
3867 ar->wiphy = wiphy;
3868
3869 return ar;
3870 }
3871
3872 /* Note: ar variable must not be accessed after calling this! */
3873 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
3874 {
3875 int i;
3876
3877 for (i = 0; i < AP_MAX_NUM_STA; i++)
3878 kfree(ar->sta_list[i].aggr_conn);
3879
3880 wiphy_free(ar->wiphy);
3881 }
3882
Linux kernel - Deliverables
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