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[mirror_ubuntu-artful-kernel.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 #include <linux/sched/signal.h>
24
25 #include "core.h"
26 #include "cfg80211.h"
27 #include "debug.h"
28 #include "hif-ops.h"
29 #include "testmode.h"
30
31 #define RATETAB_ENT(_rate, _rateid, _flags) { \
32 .bitrate = (_rate), \
33 .flags = (_flags), \
34 .hw_value = (_rateid), \
35 }
36
37 #define CHAN2G(_channel, _freq, _flags) { \
38 .band = NL80211_BAND_2GHZ, \
39 .hw_value = (_channel), \
40 .center_freq = (_freq), \
41 .flags = (_flags), \
42 .max_antenna_gain = 0, \
43 .max_power = 30, \
44 }
45
46 #define CHAN5G(_channel, _flags) { \
47 .band = NL80211_BAND_5GHZ, \
48 .hw_value = (_channel), \
49 .center_freq = 5000 + (5 * (_channel)), \
50 .flags = (_flags), \
51 .max_antenna_gain = 0, \
52 .max_power = 30, \
53 }
54
55 #define DEFAULT_BG_SCAN_PERIOD 60
56
57 struct ath6kl_cfg80211_match_probe_ssid {
58 struct cfg80211_ssid ssid;
59 u8 flag;
60 };
61
62 static struct ieee80211_rate ath6kl_rates[] = {
63 RATETAB_ENT(10, 0x1, 0),
64 RATETAB_ENT(20, 0x2, 0),
65 RATETAB_ENT(55, 0x4, 0),
66 RATETAB_ENT(110, 0x8, 0),
67 RATETAB_ENT(60, 0x10, 0),
68 RATETAB_ENT(90, 0x20, 0),
69 RATETAB_ENT(120, 0x40, 0),
70 RATETAB_ENT(180, 0x80, 0),
71 RATETAB_ENT(240, 0x100, 0),
72 RATETAB_ENT(360, 0x200, 0),
73 RATETAB_ENT(480, 0x400, 0),
74 RATETAB_ENT(540, 0x800, 0),
75 };
76
77 #define ath6kl_a_rates (ath6kl_rates + 4)
78 #define ath6kl_a_rates_size 8
79 #define ath6kl_g_rates (ath6kl_rates + 0)
80 #define ath6kl_g_rates_size 12
81
82 #define ath6kl_g_htcap IEEE80211_HT_CAP_SGI_20
83 #define ath6kl_a_htcap (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \
84 IEEE80211_HT_CAP_SGI_20 | \
85 IEEE80211_HT_CAP_SGI_40)
86
87 static struct ieee80211_channel ath6kl_2ghz_channels[] = {
88 CHAN2G(1, 2412, 0),
89 CHAN2G(2, 2417, 0),
90 CHAN2G(3, 2422, 0),
91 CHAN2G(4, 2427, 0),
92 CHAN2G(5, 2432, 0),
93 CHAN2G(6, 2437, 0),
94 CHAN2G(7, 2442, 0),
95 CHAN2G(8, 2447, 0),
96 CHAN2G(9, 2452, 0),
97 CHAN2G(10, 2457, 0),
98 CHAN2G(11, 2462, 0),
99 CHAN2G(12, 2467, 0),
100 CHAN2G(13, 2472, 0),
101 CHAN2G(14, 2484, 0),
102 };
103
104 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = {
105 CHAN5G(34, 0), CHAN5G(36, 0),
106 CHAN5G(38, 0), CHAN5G(40, 0),
107 CHAN5G(42, 0), CHAN5G(44, 0),
108 CHAN5G(46, 0), CHAN5G(48, 0),
109 CHAN5G(52, 0), CHAN5G(56, 0),
110 CHAN5G(60, 0), CHAN5G(64, 0),
111 CHAN5G(100, 0), CHAN5G(104, 0),
112 CHAN5G(108, 0), CHAN5G(112, 0),
113 CHAN5G(116, 0), CHAN5G(120, 0),
114 CHAN5G(124, 0), CHAN5G(128, 0),
115 CHAN5G(132, 0), CHAN5G(136, 0),
116 CHAN5G(140, 0), CHAN5G(149, 0),
117 CHAN5G(153, 0), CHAN5G(157, 0),
118 CHAN5G(161, 0), CHAN5G(165, 0),
119 CHAN5G(184, 0), CHAN5G(188, 0),
120 CHAN5G(192, 0), CHAN5G(196, 0),
121 CHAN5G(200, 0), CHAN5G(204, 0),
122 CHAN5G(208, 0), CHAN5G(212, 0),
123 CHAN5G(216, 0),
124 };
125
126 static struct ieee80211_supported_band ath6kl_band_2ghz = {
127 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels),
128 .channels = ath6kl_2ghz_channels,
129 .n_bitrates = ath6kl_g_rates_size,
130 .bitrates = ath6kl_g_rates,
131 .ht_cap.cap = ath6kl_g_htcap,
132 .ht_cap.ht_supported = true,
133 };
134
135 static struct ieee80211_supported_band ath6kl_band_5ghz = {
136 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels),
137 .channels = ath6kl_5ghz_a_channels,
138 .n_bitrates = ath6kl_a_rates_size,
139 .bitrates = ath6kl_a_rates,
140 .ht_cap.cap = ath6kl_a_htcap,
141 .ht_cap.ht_supported = true,
142 };
143
144 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */
145
146 /* returns true if scheduled scan was stopped */
147 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif)
148 {
149 struct ath6kl *ar = vif->ar;
150
151 if (!test_and_clear_bit(SCHED_SCANNING, &vif->flags))
152 return false;
153
154 del_timer_sync(&vif->sched_scan_timer);
155
156 if (ar->state == ATH6KL_STATE_RECOVERY)
157 return true;
158
159 ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, false);
160
161 return true;
162 }
163
164 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif)
165 {
166 struct ath6kl *ar = vif->ar;
167 bool stopped;
168
169 stopped = __ath6kl_cfg80211_sscan_stop(vif);
170
171 if (!stopped)
172 return;
173
174 cfg80211_sched_scan_stopped(ar->wiphy);
175 }
176
177 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif,
178 enum nl80211_wpa_versions wpa_version)
179 {
180 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version);
181
182 if (!wpa_version) {
183 vif->auth_mode = NONE_AUTH;
184 } else if (wpa_version & NL80211_WPA_VERSION_2) {
185 vif->auth_mode = WPA2_AUTH;
186 } else if (wpa_version & NL80211_WPA_VERSION_1) {
187 vif->auth_mode = WPA_AUTH;
188 } else {
189 ath6kl_err("%s: %u not supported\n", __func__, wpa_version);
190 return -ENOTSUPP;
191 }
192
193 return 0;
194 }
195
196 static int ath6kl_set_auth_type(struct ath6kl_vif *vif,
197 enum nl80211_auth_type auth_type)
198 {
199 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type);
200
201 switch (auth_type) {
202 case NL80211_AUTHTYPE_OPEN_SYSTEM:
203 vif->dot11_auth_mode = OPEN_AUTH;
204 break;
205 case NL80211_AUTHTYPE_SHARED_KEY:
206 vif->dot11_auth_mode = SHARED_AUTH;
207 break;
208 case NL80211_AUTHTYPE_NETWORK_EAP:
209 vif->dot11_auth_mode = LEAP_AUTH;
210 break;
211
212 case NL80211_AUTHTYPE_AUTOMATIC:
213 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH;
214 break;
215
216 default:
217 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type);
218 return -ENOTSUPP;
219 }
220
221 return 0;
222 }
223
224 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast)
225 {
226 u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto;
227 u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len :
228 &vif->grp_crypto_len;
229
230 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n",
231 __func__, cipher, ucast);
232
233 switch (cipher) {
234 case 0:
235 /* our own hack to use value 0 as no crypto used */
236 *ar_cipher = NONE_CRYPT;
237 *ar_cipher_len = 0;
238 break;
239 case WLAN_CIPHER_SUITE_WEP40:
240 *ar_cipher = WEP_CRYPT;
241 *ar_cipher_len = 5;
242 break;
243 case WLAN_CIPHER_SUITE_WEP104:
244 *ar_cipher = WEP_CRYPT;
245 *ar_cipher_len = 13;
246 break;
247 case WLAN_CIPHER_SUITE_TKIP:
248 *ar_cipher = TKIP_CRYPT;
249 *ar_cipher_len = 0;
250 break;
251 case WLAN_CIPHER_SUITE_CCMP:
252 *ar_cipher = AES_CRYPT;
253 *ar_cipher_len = 0;
254 break;
255 case WLAN_CIPHER_SUITE_SMS4:
256 *ar_cipher = WAPI_CRYPT;
257 *ar_cipher_len = 0;
258 break;
259 default:
260 ath6kl_err("cipher 0x%x not supported\n", cipher);
261 return -ENOTSUPP;
262 }
263
264 return 0;
265 }
266
267 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt)
268 {
269 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt);
270
271 if (key_mgmt == WLAN_AKM_SUITE_PSK) {
272 if (vif->auth_mode == WPA_AUTH)
273 vif->auth_mode = WPA_PSK_AUTH;
274 else if (vif->auth_mode == WPA2_AUTH)
275 vif->auth_mode = WPA2_PSK_AUTH;
276 } else if (key_mgmt == 0x00409600) {
277 if (vif->auth_mode == WPA_AUTH)
278 vif->auth_mode = WPA_AUTH_CCKM;
279 else if (vif->auth_mode == WPA2_AUTH)
280 vif->auth_mode = WPA2_AUTH_CCKM;
281 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) {
282 vif->auth_mode = NONE_AUTH;
283 }
284 }
285
286 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif)
287 {
288 struct ath6kl *ar = vif->ar;
289
290 if (!test_bit(WMI_READY, &ar->flag)) {
291 ath6kl_err("wmi is not ready\n");
292 return false;
293 }
294
295 if (!test_bit(WLAN_ENABLED, &vif->flags)) {
296 ath6kl_err("wlan disabled\n");
297 return false;
298 }
299
300 return true;
301 }
302
303 static bool ath6kl_is_wpa_ie(const u8 *pos)
304 {
305 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
306 pos[2] == 0x00 && pos[3] == 0x50 &&
307 pos[4] == 0xf2 && pos[5] == 0x01;
308 }
309
310 static bool ath6kl_is_rsn_ie(const u8 *pos)
311 {
312 return pos[0] == WLAN_EID_RSN;
313 }
314
315 static bool ath6kl_is_wps_ie(const u8 *pos)
316 {
317 return (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
318 pos[1] >= 4 &&
319 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 &&
320 pos[5] == 0x04);
321 }
322
323 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies,
324 size_t ies_len)
325 {
326 struct ath6kl *ar = vif->ar;
327 const u8 *pos;
328 u8 *buf = NULL;
329 size_t len = 0;
330 int ret;
331
332 /*
333 * Clear previously set flag
334 */
335
336 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
337
338 /*
339 * Filter out RSN/WPA IE(s)
340 */
341
342 if (ies && ies_len) {
343 buf = kmalloc(ies_len, GFP_KERNEL);
344 if (buf == NULL)
345 return -ENOMEM;
346 pos = ies;
347
348 while (pos + 1 < ies + ies_len) {
349 if (pos + 2 + pos[1] > ies + ies_len)
350 break;
351 if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) {
352 memcpy(buf + len, pos, 2 + pos[1]);
353 len += 2 + pos[1];
354 }
355
356 if (ath6kl_is_wps_ie(pos))
357 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG;
358
359 pos += 2 + pos[1];
360 }
361 }
362
363 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
364 WMI_FRAME_ASSOC_REQ, buf, len);
365 kfree(buf);
366 return ret;
367 }
368
369 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type)
370 {
371 switch (type) {
372 case NL80211_IFTYPE_STATION:
373 case NL80211_IFTYPE_P2P_CLIENT:
374 *nw_type = INFRA_NETWORK;
375 break;
376 case NL80211_IFTYPE_ADHOC:
377 *nw_type = ADHOC_NETWORK;
378 break;
379 case NL80211_IFTYPE_AP:
380 case NL80211_IFTYPE_P2P_GO:
381 *nw_type = AP_NETWORK;
382 break;
383 default:
384 ath6kl_err("invalid interface type %u\n", type);
385 return -ENOTSUPP;
386 }
387
388 return 0;
389 }
390
391 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type,
392 u8 *if_idx, u8 *nw_type)
393 {
394 int i;
395
396 if (ath6kl_nliftype_to_drv_iftype(type, nw_type))
397 return false;
398
399 if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) &&
400 ar->num_vif))
401 return false;
402
403 if (type == NL80211_IFTYPE_STATION ||
404 type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
405 for (i = 0; i < ar->vif_max; i++) {
406 if ((ar->avail_idx_map) & BIT(i)) {
407 *if_idx = i;
408 return true;
409 }
410 }
411 }
412
413 if (type == NL80211_IFTYPE_P2P_CLIENT ||
414 type == NL80211_IFTYPE_P2P_GO) {
415 for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
416 if ((ar->avail_idx_map) & BIT(i)) {
417 *if_idx = i;
418 return true;
419 }
420 }
421 }
422
423 return false;
424 }
425
426 static bool ath6kl_is_tx_pending(struct ath6kl *ar)
427 {
428 return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0;
429 }
430
431 static void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif,
432 bool enable)
433 {
434 int err;
435
436 if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
437 return;
438
439 if (vif->nw_type != INFRA_NETWORK)
440 return;
441
442 if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
443 vif->ar->fw_capabilities))
444 return;
445
446 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
447 enable ? "enable" : "disable");
448
449 err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
450 vif->fw_vif_idx, enable);
451 if (err)
452 ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
453 enable ? "enable" : "disable", err);
454 }
455
456 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
457 struct cfg80211_connect_params *sme)
458 {
459 struct ath6kl *ar = ath6kl_priv(dev);
460 struct ath6kl_vif *vif = netdev_priv(dev);
461 int status;
462 u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
463 u16 interval;
464
465 ath6kl_cfg80211_sscan_disable(vif);
466
467 vif->sme_state = SME_CONNECTING;
468
469 if (!ath6kl_cfg80211_ready(vif))
470 return -EIO;
471
472 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
473 ath6kl_err("destroy in progress\n");
474 return -EBUSY;
475 }
476
477 if (test_bit(SKIP_SCAN, &ar->flag) &&
478 ((sme->channel && sme->channel->center_freq == 0) ||
479 (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
480 ath6kl_err("SkipScan: channel or bssid invalid\n");
481 return -EINVAL;
482 }
483
484 if (down_interruptible(&ar->sem)) {
485 ath6kl_err("busy, couldn't get access\n");
486 return -ERESTARTSYS;
487 }
488
489 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
490 ath6kl_err("busy, destroy in progress\n");
491 up(&ar->sem);
492 return -EBUSY;
493 }
494
495 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
496 /*
497 * sleep until the command queue drains
498 */
499 wait_event_interruptible_timeout(ar->event_wq,
500 ath6kl_is_tx_pending(ar),
501 WMI_TIMEOUT);
502 if (signal_pending(current)) {
503 ath6kl_err("cmd queue drain timeout\n");
504 up(&ar->sem);
505 return -EINTR;
506 }
507 }
508
509 status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
510 if (status) {
511 up(&ar->sem);
512 return status;
513 }
514
515 if (sme->ie == NULL || sme->ie_len == 0)
516 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
517
518 if (test_bit(CONNECTED, &vif->flags) &&
519 vif->ssid_len == sme->ssid_len &&
520 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
521 vif->reconnect_flag = true;
522 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx,
523 vif->req_bssid,
524 vif->ch_hint);
525
526 up(&ar->sem);
527 if (status) {
528 ath6kl_err("wmi_reconnect_cmd failed\n");
529 return -EIO;
530 }
531 return 0;
532 } else if (vif->ssid_len == sme->ssid_len &&
533 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
534 ath6kl_disconnect(vif);
535 }
536
537 memset(vif->ssid, 0, sizeof(vif->ssid));
538 vif->ssid_len = sme->ssid_len;
539 memcpy(vif->ssid, sme->ssid, sme->ssid_len);
540
541 if (sme->channel)
542 vif->ch_hint = sme->channel->center_freq;
543
544 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
545 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
546 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid));
547
548 ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions);
549
550 status = ath6kl_set_auth_type(vif, sme->auth_type);
551 if (status) {
552 up(&ar->sem);
553 return status;
554 }
555
556 if (sme->crypto.n_ciphers_pairwise)
557 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true);
558 else
559 ath6kl_set_cipher(vif, 0, true);
560
561 ath6kl_set_cipher(vif, sme->crypto.cipher_group, false);
562
563 if (sme->crypto.n_akm_suites)
564 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]);
565
566 if ((sme->key_len) &&
567 (vif->auth_mode == NONE_AUTH) &&
568 (vif->prwise_crypto == WEP_CRYPT)) {
569 struct ath6kl_key *key = NULL;
570
571 if (sme->key_idx > WMI_MAX_KEY_INDEX) {
572 ath6kl_err("key index %d out of bounds\n",
573 sme->key_idx);
574 up(&ar->sem);
575 return -ENOENT;
576 }
577
578 key = &vif->keys[sme->key_idx];
579 key->key_len = sme->key_len;
580 memcpy(key->key, sme->key, key->key_len);
581 key->cipher = vif->prwise_crypto;
582 vif->def_txkey_index = sme->key_idx;
583
584 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx,
585 vif->prwise_crypto,
586 GROUP_USAGE | TX_USAGE,
587 key->key_len,
588 NULL, 0,
589 key->key, KEY_OP_INIT_VAL, NULL,
590 NO_SYNC_WMIFLAG);
591 }
592
593 if (!ar->usr_bss_filter) {
594 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
595 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
596 ALL_BSS_FILTER, 0) != 0) {
597 ath6kl_err("couldn't set bss filtering\n");
598 up(&ar->sem);
599 return -EIO;
600 }
601 }
602
603 vif->nw_type = vif->next_mode;
604
605 /* enable enhanced bmiss detection if applicable */
606 ath6kl_cfg80211_sta_bmiss_enhance(vif, true);
607
608 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
609 nw_subtype = SUBTYPE_P2PCLIENT;
610
611 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
612 "%s: connect called with authmode %d dot11 auth %d"
613 " PW crypto %d PW crypto len %d GRP crypto %d"
614 " GRP crypto len %d channel hint %u\n",
615 __func__,
616 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
617 vif->prwise_crypto_len, vif->grp_crypto,
618 vif->grp_crypto_len, vif->ch_hint);
619
620 vif->reconnect_flag = 0;
621
622 if (vif->nw_type == INFRA_NETWORK) {
623 interval = max_t(u16, vif->listen_intvl_t,
624 ATH6KL_MAX_WOW_LISTEN_INTL);
625 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
626 interval,
627 0);
628 if (status) {
629 ath6kl_err("couldn't set listen intervel\n");
630 up(&ar->sem);
631 return status;
632 }
633 }
634
635 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
636 vif->dot11_auth_mode, vif->auth_mode,
637 vif->prwise_crypto,
638 vif->prwise_crypto_len,
639 vif->grp_crypto, vif->grp_crypto_len,
640 vif->ssid_len, vif->ssid,
641 vif->req_bssid, vif->ch_hint,
642 ar->connect_ctrl_flags, nw_subtype);
643
644 if (sme->bg_scan_period == 0) {
645 /* disable background scan if period is 0 */
646 sme->bg_scan_period = 0xffff;
647 } else if (sme->bg_scan_period == -1) {
648 /* configure default value if not specified */
649 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
650 }
651
652 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
653 sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
654
655 up(&ar->sem);
656
657 if (status == -EINVAL) {
658 memset(vif->ssid, 0, sizeof(vif->ssid));
659 vif->ssid_len = 0;
660 ath6kl_err("invalid request\n");
661 return -ENOENT;
662 } else if (status) {
663 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
664 return -EIO;
665 }
666
667 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
668 ((vif->auth_mode == WPA_PSK_AUTH) ||
669 (vif->auth_mode == WPA2_PSK_AUTH))) {
670 mod_timer(&vif->disconnect_timer,
671 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
672 }
673
674 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
675 set_bit(CONNECT_PEND, &vif->flags);
676
677 return 0;
678 }
679
680 static struct cfg80211_bss *
681 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif,
682 enum network_type nw_type,
683 const u8 *bssid,
684 struct ieee80211_channel *chan,
685 const u8 *beacon_ie,
686 size_t beacon_ie_len)
687 {
688 struct ath6kl *ar = vif->ar;
689 struct cfg80211_bss *bss;
690 u16 cap_val;
691 enum ieee80211_bss_type bss_type;
692 u8 *ie;
693
694 if (nw_type & ADHOC_NETWORK) {
695 cap_val = WLAN_CAPABILITY_IBSS;
696 bss_type = IEEE80211_BSS_TYPE_IBSS;
697 } else {
698 cap_val = WLAN_CAPABILITY_ESS;
699 bss_type = IEEE80211_BSS_TYPE_ESS;
700 }
701
702 bss = cfg80211_get_bss(ar->wiphy, chan, bssid,
703 vif->ssid, vif->ssid_len,
704 bss_type, IEEE80211_PRIVACY_ANY);
705 if (bss == NULL) {
706 /*
707 * Since cfg80211 may not yet know about the BSS,
708 * generate a partial entry until the first BSS info
709 * event becomes available.
710 *
711 * Prepend SSID element since it is not included in the Beacon
712 * IEs from the target.
713 */
714 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL);
715 if (ie == NULL)
716 return NULL;
717 ie[0] = WLAN_EID_SSID;
718 ie[1] = vif->ssid_len;
719 memcpy(ie + 2, vif->ssid, vif->ssid_len);
720 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len);
721 bss = cfg80211_inform_bss(ar->wiphy, chan,
722 CFG80211_BSS_FTYPE_UNKNOWN,
723 bssid, 0, cap_val, 100,
724 ie, 2 + vif->ssid_len + beacon_ie_len,
725 0, GFP_KERNEL);
726 if (bss)
727 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
728 "added bss %pM to cfg80211\n", bssid);
729 kfree(ie);
730 } else {
731 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n");
732 }
733
734 return bss;
735 }
736
737 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
738 u8 *bssid, u16 listen_intvl,
739 u16 beacon_intvl,
740 enum network_type nw_type,
741 u8 beacon_ie_len, u8 assoc_req_len,
742 u8 assoc_resp_len, u8 *assoc_info)
743 {
744 struct ieee80211_channel *chan;
745 struct ath6kl *ar = vif->ar;
746 struct cfg80211_bss *bss;
747
748 /* capinfo + listen interval */
749 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
750
751 /* capinfo + status code + associd */
752 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
753
754 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
755 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
756 assoc_resp_ie_offset;
757
758 assoc_req_len -= assoc_req_ie_offset;
759 assoc_resp_len -= assoc_resp_ie_offset;
760
761 /*
762 * Store Beacon interval here; DTIM period will be available only once
763 * a Beacon frame from the AP is seen.
764 */
765 vif->assoc_bss_beacon_int = beacon_intvl;
766 clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
767
768 if (nw_type & ADHOC_NETWORK) {
769 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
770 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
771 "%s: ath6k not in ibss mode\n", __func__);
772 return;
773 }
774 }
775
776 if (nw_type & INFRA_NETWORK) {
777 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
778 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
779 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
780 "%s: ath6k not in station mode\n", __func__);
781 return;
782 }
783 }
784
785 chan = ieee80211_get_channel(ar->wiphy, (int) channel);
786
787 bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
788 assoc_info, beacon_ie_len);
789 if (!bss) {
790 ath6kl_err("could not add cfg80211 bss entry\n");
791 return;
792 }
793
794 if (nw_type & ADHOC_NETWORK) {
795 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
796 nw_type & ADHOC_CREATOR ? "creator" : "joiner");
797 cfg80211_ibss_joined(vif->ndev, bssid, chan, GFP_KERNEL);
798 cfg80211_put_bss(ar->wiphy, bss);
799 return;
800 }
801
802 if (vif->sme_state == SME_CONNECTING) {
803 /* inform connect result to cfg80211 */
804 vif->sme_state = SME_CONNECTED;
805 cfg80211_connect_result(vif->ndev, bssid,
806 assoc_req_ie, assoc_req_len,
807 assoc_resp_ie, assoc_resp_len,
808 WLAN_STATUS_SUCCESS, GFP_KERNEL);
809 cfg80211_put_bss(ar->wiphy, bss);
810 } else if (vif->sme_state == SME_CONNECTED) {
811 /* inform roam event to cfg80211 */
812 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len,
813 assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
814 }
815 }
816
817 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
818 struct net_device *dev, u16 reason_code)
819 {
820 struct ath6kl *ar = ath6kl_priv(dev);
821 struct ath6kl_vif *vif = netdev_priv(dev);
822
823 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
824 reason_code);
825
826 ath6kl_cfg80211_sscan_disable(vif);
827
828 if (!ath6kl_cfg80211_ready(vif))
829 return -EIO;
830
831 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
832 ath6kl_err("busy, destroy in progress\n");
833 return -EBUSY;
834 }
835
836 if (down_interruptible(&ar->sem)) {
837 ath6kl_err("busy, couldn't get access\n");
838 return -ERESTARTSYS;
839 }
840
841 vif->reconnect_flag = 0;
842 ath6kl_disconnect(vif);
843 memset(vif->ssid, 0, sizeof(vif->ssid));
844 vif->ssid_len = 0;
845
846 if (!test_bit(SKIP_SCAN, &ar->flag))
847 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
848
849 up(&ar->sem);
850
851 return 0;
852 }
853
854 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
855 u8 *bssid, u8 assoc_resp_len,
856 u8 *assoc_info, u16 proto_reason)
857 {
858 struct ath6kl *ar = vif->ar;
859
860 if (vif->scan_req) {
861 struct cfg80211_scan_info info = {
862 .aborted = true,
863 };
864
865 cfg80211_scan_done(vif->scan_req, &info);
866 vif->scan_req = NULL;
867 }
868
869 if (vif->nw_type & ADHOC_NETWORK) {
870 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC)
871 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
872 "%s: ath6k not in ibss mode\n", __func__);
873 return;
874 }
875
876 if (vif->nw_type & INFRA_NETWORK) {
877 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
878 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
879 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
880 "%s: ath6k not in station mode\n", __func__);
881 return;
882 }
883 }
884
885 clear_bit(CONNECT_PEND, &vif->flags);
886
887 if (vif->sme_state == SME_CONNECTING) {
888 cfg80211_connect_result(vif->ndev,
889 bssid, NULL, 0,
890 NULL, 0,
891 WLAN_STATUS_UNSPECIFIED_FAILURE,
892 GFP_KERNEL);
893 } else if (vif->sme_state == SME_CONNECTED) {
894 cfg80211_disconnected(vif->ndev, proto_reason,
895 NULL, 0, false, GFP_KERNEL);
896 }
897
898 vif->sme_state = SME_DISCONNECTED;
899
900 /*
901 * Send a disconnect command to target when a disconnect event is
902 * received with reason code other than 3 (DISCONNECT_CMD - disconnect
903 * request from host) to make the firmware stop trying to connect even
904 * after giving disconnect event. There will be one more disconnect
905 * event for this disconnect command with reason code DISCONNECT_CMD
906 * which won't be notified to cfg80211.
907 */
908 if (reason != DISCONNECT_CMD)
909 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
910 }
911
912 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
913 struct ath6kl_vif *vif,
914 struct cfg80211_ssid *ssids, int n_ssids,
915 struct cfg80211_match_set *match_set,
916 int n_match_ssid)
917 {
918 u8 i, j, index_to_add, ssid_found = false;
919 struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS];
920
921 memset(ssid_list, 0, sizeof(ssid_list));
922
923 if (n_ssids > MAX_PROBED_SSIDS ||
924 n_match_ssid > MAX_PROBED_SSIDS)
925 return -EINVAL;
926
927 for (i = 0; i < n_ssids; i++) {
928 memcpy(ssid_list[i].ssid.ssid,
929 ssids[i].ssid,
930 ssids[i].ssid_len);
931 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len;
932
933 if (ssids[i].ssid_len)
934 ssid_list[i].flag = SPECIFIC_SSID_FLAG;
935 else
936 ssid_list[i].flag = ANY_SSID_FLAG;
937
938 if (n_match_ssid == 0)
939 ssid_list[i].flag |= MATCH_SSID_FLAG;
940 }
941
942 index_to_add = i;
943
944 for (i = 0; i < n_match_ssid; i++) {
945 ssid_found = false;
946
947 for (j = 0; j < n_ssids; j++) {
948 if ((match_set[i].ssid.ssid_len ==
949 ssid_list[j].ssid.ssid_len) &&
950 (!memcmp(ssid_list[j].ssid.ssid,
951 match_set[i].ssid.ssid,
952 match_set[i].ssid.ssid_len))) {
953 ssid_list[j].flag |= MATCH_SSID_FLAG;
954 ssid_found = true;
955 break;
956 }
957 }
958
959 if (ssid_found)
960 continue;
961
962 if (index_to_add >= MAX_PROBED_SSIDS)
963 continue;
964
965 ssid_list[index_to_add].ssid.ssid_len =
966 match_set[i].ssid.ssid_len;
967 memcpy(ssid_list[index_to_add].ssid.ssid,
968 match_set[i].ssid.ssid,
969 match_set[i].ssid.ssid_len);
970 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG;
971 index_to_add++;
972 }
973
974 for (i = 0; i < index_to_add; i++) {
975 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
976 ssid_list[i].flag,
977 ssid_list[i].ssid.ssid_len,
978 ssid_list[i].ssid.ssid);
979 }
980
981 /* Make sure no old entries are left behind */
982 for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) {
983 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
984 DISABLE_SSID_FLAG, 0, NULL);
985 }
986
987 return 0;
988 }
989
990 static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
991 struct cfg80211_scan_request *request)
992 {
993 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
994 struct ath6kl *ar = ath6kl_priv(vif->ndev);
995 s8 n_channels = 0;
996 u16 *channels = NULL;
997 int ret = 0;
998 u32 force_fg_scan = 0;
999
1000 if (!ath6kl_cfg80211_ready(vif))
1001 return -EIO;
1002
1003 ath6kl_cfg80211_sscan_disable(vif);
1004
1005 if (!ar->usr_bss_filter) {
1006 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1007 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1008 ALL_BSS_FILTER, 0);
1009 if (ret) {
1010 ath6kl_err("couldn't set bss filtering\n");
1011 return ret;
1012 }
1013 }
1014
1015 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
1016 request->n_ssids, NULL, 0);
1017 if (ret < 0)
1018 return ret;
1019
1020 /* this also clears IE in fw if it's not set */
1021 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
1022 WMI_FRAME_PROBE_REQ,
1023 request->ie, request->ie_len);
1024 if (ret) {
1025 ath6kl_err("failed to set Probe Request appie for scan\n");
1026 return ret;
1027 }
1028
1029 /*
1030 * Scan only the requested channels if the request specifies a set of
1031 * channels. If the list is longer than the target supports, do not
1032 * configure the list and instead, scan all available channels.
1033 */
1034 if (request->n_channels > 0 &&
1035 request->n_channels <= WMI_MAX_CHANNELS) {
1036 u8 i;
1037
1038 n_channels = request->n_channels;
1039
1040 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
1041 if (channels == NULL) {
1042 ath6kl_warn("failed to set scan channels, scan all channels");
1043 n_channels = 0;
1044 }
1045
1046 for (i = 0; i < n_channels; i++)
1047 channels[i] = request->channels[i]->center_freq;
1048 }
1049
1050 if (test_bit(CONNECTED, &vif->flags))
1051 force_fg_scan = 1;
1052
1053 vif->scan_req = request;
1054
1055 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
1056 WMI_LONG_SCAN, force_fg_scan,
1057 false, 0,
1058 ATH6KL_FG_SCAN_INTERVAL,
1059 n_channels, channels,
1060 request->no_cck,
1061 request->rates);
1062 if (ret) {
1063 ath6kl_err("failed to start scan: %d\n", ret);
1064 vif->scan_req = NULL;
1065 }
1066
1067 kfree(channels);
1068
1069 return ret;
1070 }
1071
1072 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1073 {
1074 struct ath6kl *ar = vif->ar;
1075 struct cfg80211_scan_info info = {
1076 .aborted = aborted,
1077 };
1078 int i;
1079
1080 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1081 aborted ? " aborted" : "");
1082
1083 if (!vif->scan_req)
1084 return;
1085
1086 if (aborted)
1087 goto out;
1088
1089 if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1090 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1091 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1092 i + 1, DISABLE_SSID_FLAG,
1093 0, NULL);
1094 }
1095 }
1096
1097 out:
1098 cfg80211_scan_done(vif->scan_req, &info);
1099 vif->scan_req = NULL;
1100 }
1101
1102 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1103 enum wmi_phy_mode mode)
1104 {
1105 struct cfg80211_chan_def chandef;
1106
1107 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1108 "channel switch notify nw_type %d freq %d mode %d\n",
1109 vif->nw_type, freq, mode);
1110
1111 cfg80211_chandef_create(&chandef,
1112 ieee80211_get_channel(vif->ar->wiphy, freq),
1113 (mode == WMI_11G_HT20 &&
1114 ath6kl_band_2ghz.ht_cap.ht_supported) ?
1115 NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT);
1116
1117 mutex_lock(&vif->wdev.mtx);
1118 cfg80211_ch_switch_notify(vif->ndev, &chandef);
1119 mutex_unlock(&vif->wdev.mtx);
1120 }
1121
1122 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1123 u8 key_index, bool pairwise,
1124 const u8 *mac_addr,
1125 struct key_params *params)
1126 {
1127 struct ath6kl *ar = ath6kl_priv(ndev);
1128 struct ath6kl_vif *vif = netdev_priv(ndev);
1129 struct ath6kl_key *key = NULL;
1130 int seq_len;
1131 u8 key_usage;
1132 u8 key_type;
1133
1134 if (!ath6kl_cfg80211_ready(vif))
1135 return -EIO;
1136
1137 if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1138 if (params->key_len != WMI_KRK_LEN)
1139 return -EINVAL;
1140 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1141 params->key);
1142 }
1143
1144 if (key_index > WMI_MAX_KEY_INDEX) {
1145 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1146 "%s: key index %d out of bounds\n", __func__,
1147 key_index);
1148 return -ENOENT;
1149 }
1150
1151 key = &vif->keys[key_index];
1152 memset(key, 0, sizeof(struct ath6kl_key));
1153
1154 if (pairwise)
1155 key_usage = PAIRWISE_USAGE;
1156 else
1157 key_usage = GROUP_USAGE;
1158
1159 seq_len = params->seq_len;
1160 if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1161 seq_len > ATH6KL_KEY_SEQ_LEN) {
1162 /* Only first half of the WPI PN is configured */
1163 seq_len = ATH6KL_KEY_SEQ_LEN;
1164 }
1165 if (params->key_len > WLAN_MAX_KEY_LEN ||
1166 seq_len > sizeof(key->seq))
1167 return -EINVAL;
1168
1169 key->key_len = params->key_len;
1170 memcpy(key->key, params->key, key->key_len);
1171 key->seq_len = seq_len;
1172 memcpy(key->seq, params->seq, key->seq_len);
1173 key->cipher = params->cipher;
1174
1175 switch (key->cipher) {
1176 case WLAN_CIPHER_SUITE_WEP40:
1177 case WLAN_CIPHER_SUITE_WEP104:
1178 key_type = WEP_CRYPT;
1179 break;
1180
1181 case WLAN_CIPHER_SUITE_TKIP:
1182 key_type = TKIP_CRYPT;
1183 break;
1184
1185 case WLAN_CIPHER_SUITE_CCMP:
1186 key_type = AES_CRYPT;
1187 break;
1188 case WLAN_CIPHER_SUITE_SMS4:
1189 key_type = WAPI_CRYPT;
1190 break;
1191
1192 default:
1193 return -ENOTSUPP;
1194 }
1195
1196 if (((vif->auth_mode == WPA_PSK_AUTH) ||
1197 (vif->auth_mode == WPA2_PSK_AUTH)) &&
1198 (key_usage & GROUP_USAGE))
1199 del_timer(&vif->disconnect_timer);
1200
1201 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1202 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1203 __func__, key_index, key->key_len, key_type,
1204 key_usage, key->seq_len);
1205
1206 if (vif->nw_type == AP_NETWORK && !pairwise &&
1207 (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1208 key_type == WAPI_CRYPT)) {
1209 ar->ap_mode_bkey.valid = true;
1210 ar->ap_mode_bkey.key_index = key_index;
1211 ar->ap_mode_bkey.key_type = key_type;
1212 ar->ap_mode_bkey.key_len = key->key_len;
1213 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1214 if (!test_bit(CONNECTED, &vif->flags)) {
1215 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1216 "Delay initial group key configuration until AP mode has been started\n");
1217 /*
1218 * The key will be set in ath6kl_connect_ap_mode() once
1219 * the connected event is received from the target.
1220 */
1221 return 0;
1222 }
1223 }
1224
1225 if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1226 !test_bit(CONNECTED, &vif->flags)) {
1227 /*
1228 * Store the key locally so that it can be re-configured after
1229 * the AP mode has properly started
1230 * (ath6kl_install_statioc_wep_keys).
1231 */
1232 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1233 "Delay WEP key configuration until AP mode has been started\n");
1234 vif->wep_key_list[key_index].key_len = key->key_len;
1235 memcpy(vif->wep_key_list[key_index].key, key->key,
1236 key->key_len);
1237 return 0;
1238 }
1239
1240 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1241 key_type, key_usage, key->key_len,
1242 key->seq, key->seq_len, key->key,
1243 KEY_OP_INIT_VAL,
1244 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1245 }
1246
1247 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1248 u8 key_index, bool pairwise,
1249 const u8 *mac_addr)
1250 {
1251 struct ath6kl *ar = ath6kl_priv(ndev);
1252 struct ath6kl_vif *vif = netdev_priv(ndev);
1253
1254 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1255
1256 if (!ath6kl_cfg80211_ready(vif))
1257 return -EIO;
1258
1259 if (key_index > WMI_MAX_KEY_INDEX) {
1260 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1261 "%s: key index %d out of bounds\n", __func__,
1262 key_index);
1263 return -ENOENT;
1264 }
1265
1266 if (!vif->keys[key_index].key_len) {
1267 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1268 "%s: index %d is empty\n", __func__, key_index);
1269 return 0;
1270 }
1271
1272 vif->keys[key_index].key_len = 0;
1273
1274 return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1275 }
1276
1277 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1278 u8 key_index, bool pairwise,
1279 const u8 *mac_addr, void *cookie,
1280 void (*callback) (void *cookie,
1281 struct key_params *))
1282 {
1283 struct ath6kl_vif *vif = netdev_priv(ndev);
1284 struct ath6kl_key *key = NULL;
1285 struct key_params params;
1286
1287 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1288
1289 if (!ath6kl_cfg80211_ready(vif))
1290 return -EIO;
1291
1292 if (key_index > WMI_MAX_KEY_INDEX) {
1293 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1294 "%s: key index %d out of bounds\n", __func__,
1295 key_index);
1296 return -ENOENT;
1297 }
1298
1299 key = &vif->keys[key_index];
1300 memset(&params, 0, sizeof(params));
1301 params.cipher = key->cipher;
1302 params.key_len = key->key_len;
1303 params.seq_len = key->seq_len;
1304 params.seq = key->seq;
1305 params.key = key->key;
1306
1307 callback(cookie, &params);
1308
1309 return key->key_len ? 0 : -ENOENT;
1310 }
1311
1312 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1313 struct net_device *ndev,
1314 u8 key_index, bool unicast,
1315 bool multicast)
1316 {
1317 struct ath6kl *ar = ath6kl_priv(ndev);
1318 struct ath6kl_vif *vif = netdev_priv(ndev);
1319 struct ath6kl_key *key = NULL;
1320 u8 key_usage;
1321 enum crypto_type key_type = NONE_CRYPT;
1322
1323 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1324
1325 if (!ath6kl_cfg80211_ready(vif))
1326 return -EIO;
1327
1328 if (key_index > WMI_MAX_KEY_INDEX) {
1329 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1330 "%s: key index %d out of bounds\n",
1331 __func__, key_index);
1332 return -ENOENT;
1333 }
1334
1335 if (!vif->keys[key_index].key_len) {
1336 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1337 __func__, key_index);
1338 return -EINVAL;
1339 }
1340
1341 vif->def_txkey_index = key_index;
1342 key = &vif->keys[vif->def_txkey_index];
1343 key_usage = GROUP_USAGE;
1344 if (vif->prwise_crypto == WEP_CRYPT)
1345 key_usage |= TX_USAGE;
1346 if (unicast)
1347 key_type = vif->prwise_crypto;
1348 if (multicast)
1349 key_type = vif->grp_crypto;
1350
1351 if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1352 return 0; /* Delay until AP mode has been started */
1353
1354 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1355 vif->def_txkey_index,
1356 key_type, key_usage,
1357 key->key_len, key->seq, key->seq_len,
1358 key->key,
1359 KEY_OP_INIT_VAL, NULL,
1360 SYNC_BOTH_WMIFLAG);
1361 }
1362
1363 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1364 bool ismcast)
1365 {
1366 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1367 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1368
1369 cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1370 (ismcast ? NL80211_KEYTYPE_GROUP :
1371 NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1372 GFP_KERNEL);
1373 }
1374
1375 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1376 {
1377 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1378 struct ath6kl_vif *vif;
1379 int ret;
1380
1381 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1382 changed);
1383
1384 vif = ath6kl_vif_first(ar);
1385 if (!vif)
1386 return -EIO;
1387
1388 if (!ath6kl_cfg80211_ready(vif))
1389 return -EIO;
1390
1391 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1392 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1393 if (ret != 0) {
1394 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1395 return -EIO;
1396 }
1397 }
1398
1399 return 0;
1400 }
1401
1402 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1403 struct wireless_dev *wdev,
1404 enum nl80211_tx_power_setting type,
1405 int mbm)
1406 {
1407 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1408 struct ath6kl_vif *vif;
1409 int dbm = MBM_TO_DBM(mbm);
1410
1411 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1412 type, dbm);
1413
1414 vif = ath6kl_vif_first(ar);
1415 if (!vif)
1416 return -EIO;
1417
1418 if (!ath6kl_cfg80211_ready(vif))
1419 return -EIO;
1420
1421 switch (type) {
1422 case NL80211_TX_POWER_AUTOMATIC:
1423 return 0;
1424 case NL80211_TX_POWER_LIMITED:
1425 ar->tx_pwr = dbm;
1426 break;
1427 default:
1428 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1429 __func__, type);
1430 return -EOPNOTSUPP;
1431 }
1432
1433 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1434
1435 return 0;
1436 }
1437
1438 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy,
1439 struct wireless_dev *wdev,
1440 int *dbm)
1441 {
1442 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1443 struct ath6kl_vif *vif;
1444
1445 vif = ath6kl_vif_first(ar);
1446 if (!vif)
1447 return -EIO;
1448
1449 if (!ath6kl_cfg80211_ready(vif))
1450 return -EIO;
1451
1452 if (test_bit(CONNECTED, &vif->flags)) {
1453 ar->tx_pwr = 255;
1454
1455 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1456 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1457 return -EIO;
1458 }
1459
1460 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 255,
1461 5 * HZ);
1462
1463 if (signal_pending(current)) {
1464 ath6kl_err("target did not respond\n");
1465 return -EINTR;
1466 }
1467 }
1468
1469 *dbm = ar->tx_pwr;
1470 return 0;
1471 }
1472
1473 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1474 struct net_device *dev,
1475 bool pmgmt, int timeout)
1476 {
1477 struct ath6kl *ar = ath6kl_priv(dev);
1478 struct wmi_power_mode_cmd mode;
1479 struct ath6kl_vif *vif = netdev_priv(dev);
1480
1481 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1482 __func__, pmgmt, timeout);
1483
1484 if (!ath6kl_cfg80211_ready(vif))
1485 return -EIO;
1486
1487 if (pmgmt) {
1488 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1489 mode.pwr_mode = REC_POWER;
1490 } else {
1491 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1492 mode.pwr_mode = MAX_PERF_POWER;
1493 }
1494
1495 if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1496 mode.pwr_mode) != 0) {
1497 ath6kl_err("wmi_powermode_cmd failed\n");
1498 return -EIO;
1499 }
1500
1501 return 0;
1502 }
1503
1504 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1505 const char *name,
1506 unsigned char name_assign_type,
1507 enum nl80211_iftype type,
1508 u32 *flags,
1509 struct vif_params *params)
1510 {
1511 struct ath6kl *ar = wiphy_priv(wiphy);
1512 struct wireless_dev *wdev;
1513 u8 if_idx, nw_type;
1514
1515 if (ar->num_vif == ar->vif_max) {
1516 ath6kl_err("Reached maximum number of supported vif\n");
1517 return ERR_PTR(-EINVAL);
1518 }
1519
1520 if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1521 ath6kl_err("Not a supported interface type\n");
1522 return ERR_PTR(-EINVAL);
1523 }
1524
1525 wdev = ath6kl_interface_add(ar, name, name_assign_type, type, if_idx, nw_type);
1526 if (!wdev)
1527 return ERR_PTR(-ENOMEM);
1528
1529 ar->num_vif++;
1530
1531 return wdev;
1532 }
1533
1534 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1535 struct wireless_dev *wdev)
1536 {
1537 struct ath6kl *ar = wiphy_priv(wiphy);
1538 struct ath6kl_vif *vif = netdev_priv(wdev->netdev);
1539
1540 spin_lock_bh(&ar->list_lock);
1541 list_del(&vif->list);
1542 spin_unlock_bh(&ar->list_lock);
1543
1544 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1545
1546 rtnl_lock();
1547 ath6kl_cfg80211_vif_cleanup(vif);
1548 rtnl_unlock();
1549
1550 return 0;
1551 }
1552
1553 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1554 struct net_device *ndev,
1555 enum nl80211_iftype type, u32 *flags,
1556 struct vif_params *params)
1557 {
1558 struct ath6kl_vif *vif = netdev_priv(ndev);
1559 int i;
1560
1561 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1562
1563 /*
1564 * Don't bring up p2p on an interface which is not initialized
1565 * for p2p operation where fw does not have capability to switch
1566 * dynamically between non-p2p and p2p type interface.
1567 */
1568 if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1569 vif->ar->fw_capabilities) &&
1570 (type == NL80211_IFTYPE_P2P_CLIENT ||
1571 type == NL80211_IFTYPE_P2P_GO)) {
1572 if (vif->ar->vif_max == 1) {
1573 if (vif->fw_vif_idx != 0)
1574 return -EINVAL;
1575 else
1576 goto set_iface_type;
1577 }
1578
1579 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1580 if (i == vif->fw_vif_idx)
1581 break;
1582 }
1583
1584 if (i == vif->ar->vif_max) {
1585 ath6kl_err("Invalid interface to bring up P2P\n");
1586 return -EINVAL;
1587 }
1588 }
1589
1590 /* need to clean up enhanced bmiss detection fw state */
1591 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1592
1593 set_iface_type:
1594 switch (type) {
1595 case NL80211_IFTYPE_STATION:
1596 case NL80211_IFTYPE_P2P_CLIENT:
1597 vif->next_mode = INFRA_NETWORK;
1598 break;
1599 case NL80211_IFTYPE_ADHOC:
1600 vif->next_mode = ADHOC_NETWORK;
1601 break;
1602 case NL80211_IFTYPE_AP:
1603 case NL80211_IFTYPE_P2P_GO:
1604 vif->next_mode = AP_NETWORK;
1605 break;
1606 default:
1607 ath6kl_err("invalid interface type %u\n", type);
1608 return -EOPNOTSUPP;
1609 }
1610
1611 vif->wdev.iftype = type;
1612
1613 return 0;
1614 }
1615
1616 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1617 struct net_device *dev,
1618 struct cfg80211_ibss_params *ibss_param)
1619 {
1620 struct ath6kl *ar = ath6kl_priv(dev);
1621 struct ath6kl_vif *vif = netdev_priv(dev);
1622 int status;
1623
1624 if (!ath6kl_cfg80211_ready(vif))
1625 return -EIO;
1626
1627 vif->ssid_len = ibss_param->ssid_len;
1628 memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1629
1630 if (ibss_param->chandef.chan)
1631 vif->ch_hint = ibss_param->chandef.chan->center_freq;
1632
1633 if (ibss_param->channel_fixed) {
1634 /*
1635 * TODO: channel_fixed: The channel should be fixed, do not
1636 * search for IBSSs to join on other channels. Target
1637 * firmware does not support this feature, needs to be
1638 * updated.
1639 */
1640 return -EOPNOTSUPP;
1641 }
1642
1643 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1644 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1645 memcpy(vif->req_bssid, ibss_param->bssid,
1646 sizeof(vif->req_bssid));
1647
1648 ath6kl_set_wpa_version(vif, 0);
1649
1650 status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1651 if (status)
1652 return status;
1653
1654 if (ibss_param->privacy) {
1655 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1656 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1657 } else {
1658 ath6kl_set_cipher(vif, 0, true);
1659 ath6kl_set_cipher(vif, 0, false);
1660 }
1661
1662 vif->nw_type = vif->next_mode;
1663
1664 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1665 "%s: connect called with authmode %d dot11 auth %d"
1666 " PW crypto %d PW crypto len %d GRP crypto %d"
1667 " GRP crypto len %d channel hint %u\n",
1668 __func__,
1669 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1670 vif->prwise_crypto_len, vif->grp_crypto,
1671 vif->grp_crypto_len, vif->ch_hint);
1672
1673 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1674 vif->dot11_auth_mode, vif->auth_mode,
1675 vif->prwise_crypto,
1676 vif->prwise_crypto_len,
1677 vif->grp_crypto, vif->grp_crypto_len,
1678 vif->ssid_len, vif->ssid,
1679 vif->req_bssid, vif->ch_hint,
1680 ar->connect_ctrl_flags, SUBTYPE_NONE);
1681 set_bit(CONNECT_PEND, &vif->flags);
1682
1683 return 0;
1684 }
1685
1686 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1687 struct net_device *dev)
1688 {
1689 struct ath6kl_vif *vif = netdev_priv(dev);
1690
1691 if (!ath6kl_cfg80211_ready(vif))
1692 return -EIO;
1693
1694 ath6kl_disconnect(vif);
1695 memset(vif->ssid, 0, sizeof(vif->ssid));
1696 vif->ssid_len = 0;
1697
1698 return 0;
1699 }
1700
1701 static const u32 cipher_suites[] = {
1702 WLAN_CIPHER_SUITE_WEP40,
1703 WLAN_CIPHER_SUITE_WEP104,
1704 WLAN_CIPHER_SUITE_TKIP,
1705 WLAN_CIPHER_SUITE_CCMP,
1706 CCKM_KRK_CIPHER_SUITE,
1707 WLAN_CIPHER_SUITE_SMS4,
1708 };
1709
1710 static bool is_rate_legacy(s32 rate)
1711 {
1712 static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1713 6000, 9000, 12000, 18000, 24000,
1714 36000, 48000, 54000
1715 };
1716 u8 i;
1717
1718 for (i = 0; i < ARRAY_SIZE(legacy); i++)
1719 if (rate == legacy[i])
1720 return true;
1721
1722 return false;
1723 }
1724
1725 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1726 {
1727 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1728 52000, 58500, 65000, 72200
1729 };
1730 u8 i;
1731
1732 for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1733 if (rate == ht20[i]) {
1734 if (i == ARRAY_SIZE(ht20) - 1)
1735 /* last rate uses sgi */
1736 *sgi = true;
1737 else
1738 *sgi = false;
1739
1740 *mcs = i;
1741 return true;
1742 }
1743 }
1744 return false;
1745 }
1746
1747 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1748 {
1749 static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1750 81000, 108000, 121500, 135000,
1751 150000
1752 };
1753 u8 i;
1754
1755 for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1756 if (rate == ht40[i]) {
1757 if (i == ARRAY_SIZE(ht40) - 1)
1758 /* last rate uses sgi */
1759 *sgi = true;
1760 else
1761 *sgi = false;
1762
1763 *mcs = i;
1764 return true;
1765 }
1766 }
1767
1768 return false;
1769 }
1770
1771 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1772 const u8 *mac, struct station_info *sinfo)
1773 {
1774 struct ath6kl *ar = ath6kl_priv(dev);
1775 struct ath6kl_vif *vif = netdev_priv(dev);
1776 long left;
1777 bool sgi;
1778 s32 rate;
1779 int ret;
1780 u8 mcs;
1781
1782 if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1783 return -ENOENT;
1784
1785 if (down_interruptible(&ar->sem))
1786 return -EBUSY;
1787
1788 set_bit(STATS_UPDATE_PEND, &vif->flags);
1789
1790 ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1791
1792 if (ret != 0) {
1793 up(&ar->sem);
1794 return -EIO;
1795 }
1796
1797 left = wait_event_interruptible_timeout(ar->event_wq,
1798 !test_bit(STATS_UPDATE_PEND,
1799 &vif->flags),
1800 WMI_TIMEOUT);
1801
1802 up(&ar->sem);
1803
1804 if (left == 0)
1805 return -ETIMEDOUT;
1806 else if (left < 0)
1807 return left;
1808
1809 if (vif->target_stats.rx_byte) {
1810 sinfo->rx_bytes = vif->target_stats.rx_byte;
1811 sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64);
1812 sinfo->rx_packets = vif->target_stats.rx_pkt;
1813 sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
1814 }
1815
1816 if (vif->target_stats.tx_byte) {
1817 sinfo->tx_bytes = vif->target_stats.tx_byte;
1818 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64);
1819 sinfo->tx_packets = vif->target_stats.tx_pkt;
1820 sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
1821 }
1822
1823 sinfo->signal = vif->target_stats.cs_rssi;
1824 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1825
1826 rate = vif->target_stats.tx_ucast_rate;
1827
1828 if (is_rate_legacy(rate)) {
1829 sinfo->txrate.legacy = rate / 100;
1830 } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1831 if (sgi) {
1832 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1833 sinfo->txrate.mcs = mcs - 1;
1834 } else {
1835 sinfo->txrate.mcs = mcs;
1836 }
1837
1838 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1839 sinfo->txrate.bw = RATE_INFO_BW_20;
1840 } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1841 if (sgi) {
1842 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1843 sinfo->txrate.mcs = mcs - 1;
1844 } else {
1845 sinfo->txrate.mcs = mcs;
1846 }
1847
1848 sinfo->txrate.bw = RATE_INFO_BW_40;
1849 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1850 } else {
1851 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1852 "invalid rate from stats: %d\n", rate);
1853 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1854 return 0;
1855 }
1856
1857 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1858
1859 if (test_bit(CONNECTED, &vif->flags) &&
1860 test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1861 vif->nw_type == INFRA_NETWORK) {
1862 sinfo->filled |= BIT(NL80211_STA_INFO_BSS_PARAM);
1863 sinfo->bss_param.flags = 0;
1864 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1865 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1866 }
1867
1868 return 0;
1869 }
1870
1871 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1872 struct cfg80211_pmksa *pmksa)
1873 {
1874 struct ath6kl *ar = ath6kl_priv(netdev);
1875 struct ath6kl_vif *vif = netdev_priv(netdev);
1876
1877 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1878 pmksa->pmkid, true);
1879 }
1880
1881 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1882 struct cfg80211_pmksa *pmksa)
1883 {
1884 struct ath6kl *ar = ath6kl_priv(netdev);
1885 struct ath6kl_vif *vif = netdev_priv(netdev);
1886
1887 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1888 pmksa->pmkid, false);
1889 }
1890
1891 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1892 {
1893 struct ath6kl *ar = ath6kl_priv(netdev);
1894 struct ath6kl_vif *vif = netdev_priv(netdev);
1895
1896 if (test_bit(CONNECTED, &vif->flags))
1897 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1898 vif->bssid, NULL, false);
1899 return 0;
1900 }
1901
1902 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1903 struct cfg80211_wowlan *wow, u32 *filter)
1904 {
1905 int ret, pos;
1906 u8 mask[WOW_PATTERN_SIZE];
1907 u16 i;
1908
1909 /* Configure the patterns that we received from the user. */
1910 for (i = 0; i < wow->n_patterns; i++) {
1911 /*
1912 * Convert given nl80211 specific mask value to equivalent
1913 * driver specific mask value and send it to the chip along
1914 * with patterns. For example, If the mask value defined in
1915 * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1916 * then equivalent driver specific mask value is
1917 * "0xFF 0x00 0xFF 0x00".
1918 */
1919 memset(&mask, 0, sizeof(mask));
1920 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1921 if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1922 mask[pos] = 0xFF;
1923 }
1924 /*
1925 * Note: Pattern's offset is not passed as part of wowlan
1926 * parameter from CFG layer. So it's always passed as ZERO
1927 * to the firmware. It means, given WOW patterns are always
1928 * matched from the first byte of received pkt in the firmware.
1929 */
1930 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1931 vif->fw_vif_idx, WOW_LIST_ID,
1932 wow->patterns[i].pattern_len,
1933 0 /* pattern offset */,
1934 wow->patterns[i].pattern, mask);
1935 if (ret)
1936 return ret;
1937 }
1938
1939 if (wow->disconnect)
1940 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1941
1942 if (wow->magic_pkt)
1943 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1944
1945 if (wow->gtk_rekey_failure)
1946 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1947
1948 if (wow->eap_identity_req)
1949 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1950
1951 if (wow->four_way_handshake)
1952 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1953
1954 return 0;
1955 }
1956
1957 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1958 {
1959 static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1960 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1961 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1962 0x00, 0x08 };
1963 static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1964 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1965 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1966 0x00, 0x7f };
1967 u8 unicst_offset = 0;
1968 static const u8 arp_pattern[] = { 0x08, 0x06 };
1969 static const u8 arp_mask[] = { 0xff, 0xff };
1970 u8 arp_offset = 20;
1971 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1972 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1973 u8 discvr_offset = 38;
1974 static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1975 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1976 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1977 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1978 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1979 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1980 static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1981 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1982 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1983 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1984 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1985 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1986 u8 dhcp_offset = 0;
1987 int ret;
1988
1989 /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1990 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1991 vif->fw_vif_idx, WOW_LIST_ID,
1992 sizeof(unicst_pattern), unicst_offset,
1993 unicst_pattern, unicst_mask);
1994 if (ret) {
1995 ath6kl_err("failed to add WOW unicast IP pattern\n");
1996 return ret;
1997 }
1998
1999 /* Setup all ARP pkt pattern */
2000 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2001 vif->fw_vif_idx, WOW_LIST_ID,
2002 sizeof(arp_pattern), arp_offset,
2003 arp_pattern, arp_mask);
2004 if (ret) {
2005 ath6kl_err("failed to add WOW ARP pattern\n");
2006 return ret;
2007 }
2008
2009 /*
2010 * Setup multicast pattern for mDNS 224.0.0.251,
2011 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2012 */
2013 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2014 vif->fw_vif_idx, WOW_LIST_ID,
2015 sizeof(discvr_pattern), discvr_offset,
2016 discvr_pattern, discvr_mask);
2017 if (ret) {
2018 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2019 return ret;
2020 }
2021
2022 /* Setup all DHCP broadcast pkt pattern */
2023 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2024 vif->fw_vif_idx, WOW_LIST_ID,
2025 sizeof(dhcp_pattern), dhcp_offset,
2026 dhcp_pattern, dhcp_mask);
2027 if (ret) {
2028 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2029 return ret;
2030 }
2031
2032 return 0;
2033 }
2034
2035 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2036 {
2037 struct net_device *ndev = vif->ndev;
2038 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2039 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2040 u8 discvr_offset = 38;
2041 u8 mac_mask[ETH_ALEN];
2042 int ret;
2043
2044 /* Setup unicast pkt pattern */
2045 eth_broadcast_addr(mac_mask);
2046 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2047 vif->fw_vif_idx, WOW_LIST_ID,
2048 ETH_ALEN, 0, ndev->dev_addr,
2049 mac_mask);
2050 if (ret) {
2051 ath6kl_err("failed to add WOW unicast pattern\n");
2052 return ret;
2053 }
2054
2055 /*
2056 * Setup multicast pattern for mDNS 224.0.0.251,
2057 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2058 */
2059 if ((ndev->flags & IFF_ALLMULTI) ||
2060 (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2061 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2062 vif->fw_vif_idx, WOW_LIST_ID,
2063 sizeof(discvr_pattern), discvr_offset,
2064 discvr_pattern, discvr_mask);
2065 if (ret) {
2066 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2067 return ret;
2068 }
2069 }
2070
2071 return 0;
2072 }
2073
2074 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2075 {
2076 return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2077 }
2078
2079 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2080 {
2081 return !ar->tx_pending[ar->ctrl_ep];
2082 }
2083
2084 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2085 {
2086 int ret, left;
2087
2088 clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2089
2090 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2091 ATH6KL_HOST_MODE_ASLEEP);
2092 if (ret)
2093 return ret;
2094
2095 left = wait_event_interruptible_timeout(ar->event_wq,
2096 is_hsleep_mode_procsed(vif),
2097 WMI_TIMEOUT);
2098 if (left == 0) {
2099 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2100 ret = -ETIMEDOUT;
2101 } else if (left < 0) {
2102 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2103 left);
2104 ret = left;
2105 }
2106
2107 if (ar->tx_pending[ar->ctrl_ep]) {
2108 left = wait_event_interruptible_timeout(ar->event_wq,
2109 is_ctrl_ep_empty(ar),
2110 WMI_TIMEOUT);
2111 if (left == 0) {
2112 ath6kl_warn("clear wmi ctrl data timeout\n");
2113 ret = -ETIMEDOUT;
2114 } else if (left < 0) {
2115 ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2116 ret = left;
2117 }
2118 }
2119
2120 return ret;
2121 }
2122
2123 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif,
2124 struct cfg80211_wowlan *wow, u32 *filter)
2125 {
2126 struct ath6kl *ar = vif->ar;
2127 struct in_device *in_dev;
2128 struct in_ifaddr *ifa;
2129 int ret;
2130 u16 i, bmiss_time;
2131 __be32 ips[MAX_IP_ADDRS];
2132 u8 index = 0;
2133
2134 if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2135 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2136 ar->fw_capabilities)) {
2137 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2138 vif->fw_vif_idx, false);
2139 if (ret)
2140 return ret;
2141 }
2142
2143 /* Clear existing WOW patterns */
2144 for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2145 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2146 WOW_LIST_ID, i);
2147
2148 /*
2149 * Skip the default WOW pattern configuration
2150 * if the driver receives any WOW patterns from
2151 * the user.
2152 */
2153 if (wow)
2154 ret = ath6kl_wow_usr(ar, vif, wow, filter);
2155 else if (vif->nw_type == AP_NETWORK)
2156 ret = ath6kl_wow_ap(ar, vif);
2157 else
2158 ret = ath6kl_wow_sta(ar, vif);
2159
2160 if (ret)
2161 return ret;
2162
2163 netif_stop_queue(vif->ndev);
2164
2165 if (vif->nw_type != AP_NETWORK) {
2166 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2167 ATH6KL_MAX_WOW_LISTEN_INTL,
2168 0);
2169 if (ret)
2170 return ret;
2171
2172 /* Set listen interval x 15 times as bmiss time */
2173 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2174 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2175 bmiss_time = ATH6KL_MAX_BMISS_TIME;
2176
2177 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2178 bmiss_time, 0);
2179 if (ret)
2180 return ret;
2181
2182 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2183 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2184 0, 0, 0, 0);
2185 if (ret)
2186 return ret;
2187 }
2188
2189 /* Setup own IP addr for ARP agent. */
2190 in_dev = __in_dev_get_rtnl(vif->ndev);
2191 if (!in_dev)
2192 return 0;
2193
2194 ifa = in_dev->ifa_list;
2195 memset(&ips, 0, sizeof(ips));
2196
2197 /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2198 while (index < MAX_IP_ADDRS && ifa) {
2199 ips[index] = ifa->ifa_local;
2200 ifa = ifa->ifa_next;
2201 index++;
2202 }
2203
2204 if (ifa) {
2205 ath6kl_err("total IP addr count is exceeding fw limit\n");
2206 return -EINVAL;
2207 }
2208
2209 ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2210 if (ret) {
2211 ath6kl_err("fail to setup ip for arp agent\n");
2212 return ret;
2213 }
2214
2215 return ret;
2216 }
2217
2218 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2219 {
2220 struct ath6kl_vif *first_vif, *vif;
2221 int ret = 0;
2222 u32 filter = 0;
2223 bool connected = false;
2224
2225 /* enter / leave wow suspend on first vif always */
2226 first_vif = ath6kl_vif_first(ar);
2227 if (WARN_ON(!first_vif) ||
2228 !ath6kl_cfg80211_ready(first_vif))
2229 return -EIO;
2230
2231 if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2232 return -EINVAL;
2233
2234 /* install filters for each connected vif */
2235 spin_lock_bh(&ar->list_lock);
2236 list_for_each_entry(vif, &ar->vif_list, list) {
2237 if (!test_bit(CONNECTED, &vif->flags) ||
2238 !ath6kl_cfg80211_ready(vif))
2239 continue;
2240 connected = true;
2241
2242 ret = ath6kl_wow_suspend_vif(vif, wow, &filter);
2243 if (ret)
2244 break;
2245 }
2246 spin_unlock_bh(&ar->list_lock);
2247
2248 if (!connected)
2249 return -ENOTCONN;
2250 else if (ret)
2251 return ret;
2252
2253 ar->state = ATH6KL_STATE_SUSPENDING;
2254
2255 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx,
2256 ATH6KL_WOW_MODE_ENABLE,
2257 filter,
2258 WOW_HOST_REQ_DELAY);
2259 if (ret)
2260 return ret;
2261
2262 return ath6kl_cfg80211_host_sleep(ar, first_vif);
2263 }
2264
2265 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif)
2266 {
2267 struct ath6kl *ar = vif->ar;
2268 int ret;
2269
2270 if (vif->nw_type != AP_NETWORK) {
2271 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2272 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2273 if (ret)
2274 return ret;
2275
2276 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2277 vif->listen_intvl_t, 0);
2278 if (ret)
2279 return ret;
2280
2281 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2282 vif->bmiss_time_t, 0);
2283 if (ret)
2284 return ret;
2285 }
2286
2287 if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2288 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2289 ar->fw_capabilities)) {
2290 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2291 vif->fw_vif_idx, true);
2292 if (ret)
2293 return ret;
2294 }
2295
2296 netif_wake_queue(vif->ndev);
2297
2298 return 0;
2299 }
2300
2301 static int ath6kl_wow_resume(struct ath6kl *ar)
2302 {
2303 struct ath6kl_vif *vif;
2304 int ret;
2305
2306 vif = ath6kl_vif_first(ar);
2307 if (WARN_ON(!vif) ||
2308 !ath6kl_cfg80211_ready(vif))
2309 return -EIO;
2310
2311 ar->state = ATH6KL_STATE_RESUMING;
2312
2313 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2314 ATH6KL_HOST_MODE_AWAKE);
2315 if (ret) {
2316 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2317 ret);
2318 goto cleanup;
2319 }
2320
2321 spin_lock_bh(&ar->list_lock);
2322 list_for_each_entry(vif, &ar->vif_list, list) {
2323 if (!test_bit(CONNECTED, &vif->flags) ||
2324 !ath6kl_cfg80211_ready(vif))
2325 continue;
2326 ret = ath6kl_wow_resume_vif(vif);
2327 if (ret)
2328 break;
2329 }
2330 spin_unlock_bh(&ar->list_lock);
2331
2332 if (ret)
2333 goto cleanup;
2334
2335 ar->state = ATH6KL_STATE_ON;
2336 return 0;
2337
2338 cleanup:
2339 ar->state = ATH6KL_STATE_WOW;
2340 return ret;
2341 }
2342
2343 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2344 {
2345 struct ath6kl_vif *vif;
2346 int ret;
2347
2348 vif = ath6kl_vif_first(ar);
2349 if (!vif)
2350 return -EIO;
2351
2352 if (!test_bit(WMI_READY, &ar->flag)) {
2353 ath6kl_err("deepsleep failed as wmi is not ready\n");
2354 return -EIO;
2355 }
2356
2357 ath6kl_cfg80211_stop_all(ar);
2358
2359 /* Save the current power mode before enabling power save */
2360 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2361
2362 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2363 if (ret)
2364 return ret;
2365
2366 /* Disable WOW mode */
2367 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2368 ATH6KL_WOW_MODE_DISABLE,
2369 0, 0);
2370 if (ret)
2371 return ret;
2372
2373 /* Flush all non control pkts in TX path */
2374 ath6kl_tx_data_cleanup(ar);
2375
2376 ret = ath6kl_cfg80211_host_sleep(ar, vif);
2377 if (ret)
2378 return ret;
2379
2380 return 0;
2381 }
2382
2383 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2384 {
2385 struct ath6kl_vif *vif;
2386 int ret;
2387
2388 vif = ath6kl_vif_first(ar);
2389
2390 if (!vif)
2391 return -EIO;
2392
2393 if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2394 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2395 ar->wmi->saved_pwr_mode);
2396 if (ret)
2397 return ret;
2398 }
2399
2400 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2401 ATH6KL_HOST_MODE_AWAKE);
2402 if (ret)
2403 return ret;
2404
2405 ar->state = ATH6KL_STATE_ON;
2406
2407 /* Reset scan parameter to default values */
2408 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2409 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2410 if (ret)
2411 return ret;
2412
2413 return 0;
2414 }
2415
2416 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2417 enum ath6kl_cfg_suspend_mode mode,
2418 struct cfg80211_wowlan *wow)
2419 {
2420 struct ath6kl_vif *vif;
2421 enum ath6kl_state prev_state;
2422 int ret;
2423
2424 switch (mode) {
2425 case ATH6KL_CFG_SUSPEND_WOW:
2426
2427 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2428
2429 /* Flush all non control pkts in TX path */
2430 ath6kl_tx_data_cleanup(ar);
2431
2432 prev_state = ar->state;
2433
2434 ret = ath6kl_wow_suspend(ar, wow);
2435 if (ret) {
2436 ar->state = prev_state;
2437 return ret;
2438 }
2439
2440 ar->state = ATH6KL_STATE_WOW;
2441 break;
2442
2443 case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2444
2445 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2446
2447 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2448 if (ret) {
2449 ath6kl_err("deepsleep suspend failed: %d\n", ret);
2450 return ret;
2451 }
2452
2453 ar->state = ATH6KL_STATE_DEEPSLEEP;
2454
2455 break;
2456
2457 case ATH6KL_CFG_SUSPEND_CUTPOWER:
2458
2459 ath6kl_cfg80211_stop_all(ar);
2460
2461 if (ar->state == ATH6KL_STATE_OFF) {
2462 ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2463 "suspend hw off, no action for cutpower\n");
2464 break;
2465 }
2466
2467 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2468
2469 ret = ath6kl_init_hw_stop(ar);
2470 if (ret) {
2471 ath6kl_warn("failed to stop hw during suspend: %d\n",
2472 ret);
2473 }
2474
2475 ar->state = ATH6KL_STATE_CUTPOWER;
2476
2477 break;
2478
2479 default:
2480 break;
2481 }
2482
2483 list_for_each_entry(vif, &ar->vif_list, list)
2484 ath6kl_cfg80211_scan_complete_event(vif, true);
2485
2486 return 0;
2487 }
2488 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2489
2490 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2491 {
2492 int ret;
2493
2494 switch (ar->state) {
2495 case ATH6KL_STATE_WOW:
2496 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2497
2498 ret = ath6kl_wow_resume(ar);
2499 if (ret) {
2500 ath6kl_warn("wow mode resume failed: %d\n", ret);
2501 return ret;
2502 }
2503
2504 break;
2505
2506 case ATH6KL_STATE_DEEPSLEEP:
2507 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2508
2509 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2510 if (ret) {
2511 ath6kl_warn("deep sleep resume failed: %d\n", ret);
2512 return ret;
2513 }
2514 break;
2515
2516 case ATH6KL_STATE_CUTPOWER:
2517 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2518
2519 ret = ath6kl_init_hw_start(ar);
2520 if (ret) {
2521 ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2522 return ret;
2523 }
2524 break;
2525
2526 default:
2527 break;
2528 }
2529
2530 return 0;
2531 }
2532 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2533
2534 #ifdef CONFIG_PM
2535
2536 /* hif layer decides what suspend mode to use */
2537 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2538 struct cfg80211_wowlan *wow)
2539 {
2540 struct ath6kl *ar = wiphy_priv(wiphy);
2541
2542 ath6kl_recovery_suspend(ar);
2543
2544 return ath6kl_hif_suspend(ar, wow);
2545 }
2546
2547 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2548 {
2549 struct ath6kl *ar = wiphy_priv(wiphy);
2550 int err;
2551
2552 err = ath6kl_hif_resume(ar);
2553 if (err)
2554 return err;
2555
2556 ath6kl_recovery_resume(ar);
2557
2558 return 0;
2559 }
2560
2561 /*
2562 * FIXME: WOW suspend mode is selected if the host sdio controller supports
2563 * both sdio irq wake up and keep power. The target pulls sdio data line to
2564 * wake up the host when WOW pattern matches. This causes sdio irq handler
2565 * is being called in the host side which internally hits ath6kl's RX path.
2566 *
2567 * Since sdio interrupt is not disabled, RX path executes even before
2568 * the host executes the actual resume operation from PM module.
2569 *
2570 * In the current scenario, WOW resume should happen before start processing
2571 * any data from the target. So It's required to perform WOW resume in RX path.
2572 * Ideally we should perform WOW resume only in the actual platform
2573 * resume path. This area needs bit rework to avoid WOW resume in RX path.
2574 *
2575 * ath6kl_check_wow_status() is called from ath6kl_rx().
2576 */
2577 void ath6kl_check_wow_status(struct ath6kl *ar)
2578 {
2579 if (ar->state == ATH6KL_STATE_SUSPENDING)
2580 return;
2581
2582 if (ar->state == ATH6KL_STATE_WOW)
2583 ath6kl_cfg80211_resume(ar);
2584 }
2585
2586 #else
2587
2588 void ath6kl_check_wow_status(struct ath6kl *ar)
2589 {
2590 }
2591 #endif
2592
2593 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum nl80211_band band,
2594 bool ht_enable)
2595 {
2596 struct ath6kl_htcap *htcap = &vif->htcap[band];
2597
2598 if (htcap->ht_enable == ht_enable)
2599 return 0;
2600
2601 if (ht_enable) {
2602 /* Set default ht capabilities */
2603 htcap->ht_enable = true;
2604 htcap->cap_info = (band == NL80211_BAND_2GHZ) ?
2605 ath6kl_g_htcap : ath6kl_a_htcap;
2606 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2607 } else /* Disable ht */
2608 memset(htcap, 0, sizeof(*htcap));
2609
2610 return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2611 band, htcap);
2612 }
2613
2614 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2615 {
2616 struct wiphy *wiphy = vif->ar->wiphy;
2617 int band, ret = 0;
2618
2619 for (band = 0; band < NUM_NL80211_BANDS; band++) {
2620 if (!wiphy->bands[band])
2621 continue;
2622
2623 ret = ath6kl_set_htcap(vif, band,
2624 wiphy->bands[band]->ht_cap.ht_supported);
2625 if (ret)
2626 return ret;
2627 }
2628
2629 return ret;
2630 }
2631
2632 static bool ath6kl_is_p2p_ie(const u8 *pos)
2633 {
2634 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2635 pos[2] == 0x50 && pos[3] == 0x6f &&
2636 pos[4] == 0x9a && pos[5] == 0x09;
2637 }
2638
2639 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2640 const u8 *ies, size_t ies_len)
2641 {
2642 struct ath6kl *ar = vif->ar;
2643 const u8 *pos;
2644 u8 *buf = NULL;
2645 size_t len = 0;
2646 int ret;
2647
2648 /*
2649 * Filter out P2P IE(s) since they will be included depending on
2650 * the Probe Request frame in ath6kl_send_go_probe_resp().
2651 */
2652
2653 if (ies && ies_len) {
2654 buf = kmalloc(ies_len, GFP_KERNEL);
2655 if (buf == NULL)
2656 return -ENOMEM;
2657 pos = ies;
2658 while (pos + 1 < ies + ies_len) {
2659 if (pos + 2 + pos[1] > ies + ies_len)
2660 break;
2661 if (!ath6kl_is_p2p_ie(pos)) {
2662 memcpy(buf + len, pos, 2 + pos[1]);
2663 len += 2 + pos[1];
2664 }
2665 pos += 2 + pos[1];
2666 }
2667 }
2668
2669 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2670 WMI_FRAME_PROBE_RESP, buf, len);
2671 kfree(buf);
2672 return ret;
2673 }
2674
2675 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2676 struct cfg80211_beacon_data *info)
2677 {
2678 struct ath6kl *ar = vif->ar;
2679 int res;
2680
2681 /* this also clears IE in fw if it's not set */
2682 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2683 WMI_FRAME_BEACON,
2684 info->beacon_ies,
2685 info->beacon_ies_len);
2686 if (res)
2687 return res;
2688
2689 /* this also clears IE in fw if it's not set */
2690 res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2691 info->proberesp_ies_len);
2692 if (res)
2693 return res;
2694
2695 /* this also clears IE in fw if it's not set */
2696 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2697 WMI_FRAME_ASSOC_RESP,
2698 info->assocresp_ies,
2699 info->assocresp_ies_len);
2700 if (res)
2701 return res;
2702
2703 return 0;
2704 }
2705
2706 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2707 u8 *rsn_capab)
2708 {
2709 const u8 *rsn_ie;
2710 size_t rsn_ie_len;
2711 u16 cnt;
2712
2713 if (!beacon->tail)
2714 return -EINVAL;
2715
2716 rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2717 if (!rsn_ie)
2718 return -EINVAL;
2719
2720 rsn_ie_len = *(rsn_ie + 1);
2721 /* skip element id and length */
2722 rsn_ie += 2;
2723
2724 /* skip version */
2725 if (rsn_ie_len < 2)
2726 return -EINVAL;
2727 rsn_ie += 2;
2728 rsn_ie_len -= 2;
2729
2730 /* skip group cipher suite */
2731 if (rsn_ie_len < 4)
2732 return 0;
2733 rsn_ie += 4;
2734 rsn_ie_len -= 4;
2735
2736 /* skip pairwise cipher 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 /* skip akm suite */
2744 if (rsn_ie_len < 2)
2745 return 0;
2746 cnt = get_unaligned_le16(rsn_ie);
2747 rsn_ie += (2 + cnt * 4);
2748 rsn_ie_len -= (2 + cnt * 4);
2749
2750 if (rsn_ie_len < 2)
2751 return 0;
2752
2753 memcpy(rsn_capab, rsn_ie, 2);
2754
2755 return 0;
2756 }
2757
2758 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2759 struct cfg80211_ap_settings *info)
2760 {
2761 struct ath6kl *ar = ath6kl_priv(dev);
2762 struct ath6kl_vif *vif = netdev_priv(dev);
2763 struct ieee80211_mgmt *mgmt;
2764 bool hidden = false;
2765 u8 *ies;
2766 int ies_len;
2767 struct wmi_connect_cmd p;
2768 int res;
2769 int i, ret;
2770 u16 rsn_capab = 0;
2771 int inactivity_timeout = 0;
2772
2773 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2774
2775 if (!ath6kl_cfg80211_ready(vif))
2776 return -EIO;
2777
2778 if (vif->next_mode != AP_NETWORK)
2779 return -EOPNOTSUPP;
2780
2781 res = ath6kl_set_ies(vif, &info->beacon);
2782
2783 ar->ap_mode_bkey.valid = false;
2784
2785 ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx,
2786 info->beacon_interval);
2787
2788 if (ret)
2789 ath6kl_warn("Failed to set beacon interval: %d\n", ret);
2790
2791 ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2792 info->dtim_period);
2793
2794 /* ignore error, just print a warning and continue normally */
2795 if (ret)
2796 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2797
2798 if (info->beacon.head == NULL)
2799 return -EINVAL;
2800 mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2801 ies = mgmt->u.beacon.variable;
2802 if (ies > info->beacon.head + info->beacon.head_len)
2803 return -EINVAL;
2804 ies_len = info->beacon.head + info->beacon.head_len - ies;
2805
2806 if (info->ssid == NULL)
2807 return -EINVAL;
2808 memcpy(vif->ssid, info->ssid, info->ssid_len);
2809 vif->ssid_len = info->ssid_len;
2810 if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2811 hidden = true;
2812
2813 res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2814 if (res)
2815 return res;
2816
2817 ret = ath6kl_set_auth_type(vif, info->auth_type);
2818 if (ret)
2819 return ret;
2820
2821 memset(&p, 0, sizeof(p));
2822
2823 for (i = 0; i < info->crypto.n_akm_suites; i++) {
2824 switch (info->crypto.akm_suites[i]) {
2825 case WLAN_AKM_SUITE_8021X:
2826 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2827 p.auth_mode |= WPA_AUTH;
2828 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2829 p.auth_mode |= WPA2_AUTH;
2830 break;
2831 case WLAN_AKM_SUITE_PSK:
2832 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2833 p.auth_mode |= WPA_PSK_AUTH;
2834 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2835 p.auth_mode |= WPA2_PSK_AUTH;
2836 break;
2837 }
2838 }
2839 if (p.auth_mode == 0)
2840 p.auth_mode = NONE_AUTH;
2841 vif->auth_mode = p.auth_mode;
2842
2843 for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2844 switch (info->crypto.ciphers_pairwise[i]) {
2845 case WLAN_CIPHER_SUITE_WEP40:
2846 case WLAN_CIPHER_SUITE_WEP104:
2847 p.prwise_crypto_type |= WEP_CRYPT;
2848 break;
2849 case WLAN_CIPHER_SUITE_TKIP:
2850 p.prwise_crypto_type |= TKIP_CRYPT;
2851 break;
2852 case WLAN_CIPHER_SUITE_CCMP:
2853 p.prwise_crypto_type |= AES_CRYPT;
2854 break;
2855 case WLAN_CIPHER_SUITE_SMS4:
2856 p.prwise_crypto_type |= WAPI_CRYPT;
2857 break;
2858 }
2859 }
2860 if (p.prwise_crypto_type == 0) {
2861 p.prwise_crypto_type = NONE_CRYPT;
2862 ath6kl_set_cipher(vif, 0, true);
2863 } else if (info->crypto.n_ciphers_pairwise == 1) {
2864 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2865 }
2866
2867 switch (info->crypto.cipher_group) {
2868 case WLAN_CIPHER_SUITE_WEP40:
2869 case WLAN_CIPHER_SUITE_WEP104:
2870 p.grp_crypto_type = WEP_CRYPT;
2871 break;
2872 case WLAN_CIPHER_SUITE_TKIP:
2873 p.grp_crypto_type = TKIP_CRYPT;
2874 break;
2875 case WLAN_CIPHER_SUITE_CCMP:
2876 p.grp_crypto_type = AES_CRYPT;
2877 break;
2878 case WLAN_CIPHER_SUITE_SMS4:
2879 p.grp_crypto_type = WAPI_CRYPT;
2880 break;
2881 default:
2882 p.grp_crypto_type = NONE_CRYPT;
2883 break;
2884 }
2885 ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2886
2887 p.nw_type = AP_NETWORK;
2888 vif->nw_type = vif->next_mode;
2889
2890 p.ssid_len = vif->ssid_len;
2891 memcpy(p.ssid, vif->ssid, vif->ssid_len);
2892 p.dot11_auth_mode = vif->dot11_auth_mode;
2893 p.ch = cpu_to_le16(info->chandef.chan->center_freq);
2894
2895 /* Enable uAPSD support by default */
2896 res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2897 if (res < 0)
2898 return res;
2899
2900 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2901 p.nw_subtype = SUBTYPE_P2PGO;
2902 } else {
2903 /*
2904 * Due to firmware limitation, it is not possible to
2905 * do P2P mgmt operations in AP mode
2906 */
2907 p.nw_subtype = SUBTYPE_NONE;
2908 }
2909
2910 if (info->inactivity_timeout) {
2911 inactivity_timeout = info->inactivity_timeout;
2912
2913 if (test_bit(ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS,
2914 ar->fw_capabilities))
2915 inactivity_timeout = DIV_ROUND_UP(inactivity_timeout,
2916 60);
2917
2918 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2919 inactivity_timeout);
2920 if (res < 0)
2921 return res;
2922 }
2923
2924 if (ath6kl_set_htcap(vif, info->chandef.chan->band,
2925 cfg80211_get_chandef_type(&info->chandef)
2926 != NL80211_CHAN_NO_HT))
2927 return -EIO;
2928
2929 /*
2930 * Get the PTKSA replay counter in the RSN IE. Supplicant
2931 * will use the RSN IE in M3 message and firmware has to
2932 * advertise the same in beacon/probe response. Send
2933 * the complete RSN IE capability field to firmware
2934 */
2935 if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2936 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2937 ar->fw_capabilities)) {
2938 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2939 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2940 (const u8 *) &rsn_capab,
2941 sizeof(rsn_capab));
2942 vif->rsn_capab = rsn_capab;
2943 if (res < 0)
2944 return res;
2945 }
2946
2947 memcpy(&vif->profile, &p, sizeof(p));
2948 res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2949 if (res < 0)
2950 return res;
2951
2952 return 0;
2953 }
2954
2955 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2956 struct cfg80211_beacon_data *beacon)
2957 {
2958 struct ath6kl_vif *vif = netdev_priv(dev);
2959
2960 if (!ath6kl_cfg80211_ready(vif))
2961 return -EIO;
2962
2963 if (vif->next_mode != AP_NETWORK)
2964 return -EOPNOTSUPP;
2965
2966 return ath6kl_set_ies(vif, beacon);
2967 }
2968
2969 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2970 {
2971 struct ath6kl *ar = ath6kl_priv(dev);
2972 struct ath6kl_vif *vif = netdev_priv(dev);
2973
2974 if (vif->nw_type != AP_NETWORK)
2975 return -EOPNOTSUPP;
2976 if (!test_bit(CONNECTED, &vif->flags))
2977 return -ENOTCONN;
2978
2979 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2980 clear_bit(CONNECTED, &vif->flags);
2981 netif_carrier_off(vif->ndev);
2982
2983 /* Restore ht setting in firmware */
2984 return ath6kl_restore_htcap(vif);
2985 }
2986
2987 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2988
2989 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2990 struct station_del_parameters *params)
2991 {
2992 struct ath6kl *ar = ath6kl_priv(dev);
2993 struct ath6kl_vif *vif = netdev_priv(dev);
2994 const u8 *addr = params->mac ? params->mac : bcast_addr;
2995
2996 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2997 addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2998 }
2999
3000 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
3001 const u8 *mac,
3002 struct station_parameters *params)
3003 {
3004 struct ath6kl *ar = ath6kl_priv(dev);
3005 struct ath6kl_vif *vif = netdev_priv(dev);
3006 int err;
3007
3008 if (vif->nw_type != AP_NETWORK)
3009 return -EOPNOTSUPP;
3010
3011 err = cfg80211_check_station_change(wiphy, params,
3012 CFG80211_STA_AP_MLME_CLIENT);
3013 if (err)
3014 return err;
3015
3016 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
3017 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3018 WMI_AP_MLME_AUTHORIZE, mac, 0);
3019 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3020 WMI_AP_MLME_UNAUTHORIZE, mac, 0);
3021 }
3022
3023 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
3024 struct wireless_dev *wdev,
3025 struct ieee80211_channel *chan,
3026 unsigned int duration,
3027 u64 *cookie)
3028 {
3029 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3030 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3031 u32 id;
3032
3033 /* TODO: if already pending or ongoing remain-on-channel,
3034 * return -EBUSY */
3035 id = ++vif->last_roc_id;
3036 if (id == 0) {
3037 /* Do not use 0 as the cookie value */
3038 id = ++vif->last_roc_id;
3039 }
3040 *cookie = id;
3041
3042 return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
3043 chan->center_freq, duration);
3044 }
3045
3046 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3047 struct wireless_dev *wdev,
3048 u64 cookie)
3049 {
3050 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3051 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3052
3053 if (cookie != vif->last_roc_id)
3054 return -ENOENT;
3055 vif->last_cancel_roc_id = cookie;
3056
3057 return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3058 }
3059
3060 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3061 const u8 *buf, size_t len,
3062 unsigned int freq)
3063 {
3064 struct ath6kl *ar = vif->ar;
3065 const u8 *pos;
3066 u8 *p2p;
3067 int p2p_len;
3068 int ret;
3069 const struct ieee80211_mgmt *mgmt;
3070
3071 mgmt = (const struct ieee80211_mgmt *) buf;
3072
3073 /* Include P2P IE(s) from the frame generated in user space. */
3074
3075 p2p = kmalloc(len, GFP_KERNEL);
3076 if (p2p == NULL)
3077 return -ENOMEM;
3078 p2p_len = 0;
3079
3080 pos = mgmt->u.probe_resp.variable;
3081 while (pos + 1 < buf + len) {
3082 if (pos + 2 + pos[1] > buf + len)
3083 break;
3084 if (ath6kl_is_p2p_ie(pos)) {
3085 memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3086 p2p_len += 2 + pos[1];
3087 }
3088 pos += 2 + pos[1];
3089 }
3090
3091 ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
3092 mgmt->da, p2p, p2p_len);
3093 kfree(p2p);
3094 return ret;
3095 }
3096
3097 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
3098 u32 id,
3099 u32 freq,
3100 u32 wait,
3101 const u8 *buf,
3102 size_t len,
3103 bool *more_data,
3104 bool no_cck)
3105 {
3106 struct ieee80211_mgmt *mgmt;
3107 struct ath6kl_sta *conn;
3108 bool is_psq_empty = false;
3109 struct ath6kl_mgmt_buff *mgmt_buf;
3110 size_t mgmt_buf_size;
3111 struct ath6kl *ar = vif->ar;
3112
3113 mgmt = (struct ieee80211_mgmt *) buf;
3114 if (is_multicast_ether_addr(mgmt->da))
3115 return false;
3116
3117 conn = ath6kl_find_sta(vif, mgmt->da);
3118 if (!conn)
3119 return false;
3120
3121 if (conn->sta_flags & STA_PS_SLEEP) {
3122 if (!(conn->sta_flags & STA_PS_POLLED)) {
3123 /* Queue the frames if the STA is sleeping */
3124 mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3125 mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3126 if (!mgmt_buf)
3127 return false;
3128
3129 INIT_LIST_HEAD(&mgmt_buf->list);
3130 mgmt_buf->id = id;
3131 mgmt_buf->freq = freq;
3132 mgmt_buf->wait = wait;
3133 mgmt_buf->len = len;
3134 mgmt_buf->no_cck = no_cck;
3135 memcpy(mgmt_buf->buf, buf, len);
3136 spin_lock_bh(&conn->psq_lock);
3137 is_psq_empty = skb_queue_empty(&conn->psq) &&
3138 (conn->mgmt_psq_len == 0);
3139 list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3140 conn->mgmt_psq_len++;
3141 spin_unlock_bh(&conn->psq_lock);
3142
3143 /*
3144 * If this is the first pkt getting queued
3145 * for this STA, update the PVB for this
3146 * STA.
3147 */
3148 if (is_psq_empty)
3149 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3150 conn->aid, 1);
3151 return true;
3152 }
3153
3154 /*
3155 * This tx is because of a PsPoll.
3156 * Determine if MoreData bit has to be set.
3157 */
3158 spin_lock_bh(&conn->psq_lock);
3159 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3160 *more_data = true;
3161 spin_unlock_bh(&conn->psq_lock);
3162 }
3163
3164 return false;
3165 }
3166
3167 /* Check if SSID length is greater than DIRECT- */
3168 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3169 {
3170 const struct ieee80211_mgmt *mgmt;
3171 mgmt = (const struct ieee80211_mgmt *) buf;
3172
3173 /* variable[1] contains the SSID tag length */
3174 if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3175 (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3176 return true;
3177 }
3178
3179 return false;
3180 }
3181
3182 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3183 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
3184 {
3185 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3186 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3187 struct ieee80211_channel *chan = params->chan;
3188 const u8 *buf = params->buf;
3189 size_t len = params->len;
3190 unsigned int wait = params->wait;
3191 bool no_cck = params->no_cck;
3192 u32 id, freq;
3193 const struct ieee80211_mgmt *mgmt;
3194 bool more_data, queued;
3195
3196 /* default to the current channel, but use the one specified as argument
3197 * if any
3198 */
3199 freq = vif->ch_hint;
3200 if (chan)
3201 freq = chan->center_freq;
3202
3203 /* never send freq zero to the firmware */
3204 if (WARN_ON(freq == 0))
3205 return -EINVAL;
3206
3207 mgmt = (const struct ieee80211_mgmt *) buf;
3208 if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3209 ieee80211_is_probe_resp(mgmt->frame_control) &&
3210 ath6kl_is_p2p_go_ssid(buf, len)) {
3211 /*
3212 * Send Probe Response frame in GO mode using a separate WMI
3213 * command to allow the target to fill in the generic IEs.
3214 */
3215 *cookie = 0; /* TX status not supported */
3216 return ath6kl_send_go_probe_resp(vif, buf, len, freq);
3217 }
3218
3219 id = vif->send_action_id++;
3220 if (id == 0) {
3221 /*
3222 * 0 is a reserved value in the WMI command and shall not be
3223 * used for the command.
3224 */
3225 id = vif->send_action_id++;
3226 }
3227
3228 *cookie = id;
3229
3230 /* AP mode Power saving processing */
3231 if (vif->nw_type == AP_NETWORK) {
3232 queued = ath6kl_mgmt_powersave_ap(vif, id, freq, wait, buf, len,
3233 &more_data, no_cck);
3234 if (queued)
3235 return 0;
3236 }
3237
3238 return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id, freq,
3239 wait, buf, len, no_cck);
3240 }
3241
3242 static int ath6kl_get_antenna(struct wiphy *wiphy,
3243 u32 *tx_ant, u32 *rx_ant)
3244 {
3245 struct ath6kl *ar = wiphy_priv(wiphy);
3246 *tx_ant = ar->hw.tx_ant;
3247 *rx_ant = ar->hw.rx_ant;
3248 return 0;
3249 }
3250
3251 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3252 struct wireless_dev *wdev,
3253 u16 frame_type, bool reg)
3254 {
3255 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3256
3257 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3258 __func__, frame_type, reg);
3259 if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3260 /*
3261 * Note: This notification callback is not allowed to sleep, so
3262 * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3263 * hardcode target to report Probe Request frames all the time.
3264 */
3265 vif->probe_req_report = reg;
3266 }
3267 }
3268
3269 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3270 struct net_device *dev,
3271 struct cfg80211_sched_scan_request *request)
3272 {
3273 struct ath6kl *ar = ath6kl_priv(dev);
3274 struct ath6kl_vif *vif = netdev_priv(dev);
3275 u16 interval;
3276 int ret, rssi_thold;
3277 int n_match_sets = request->n_match_sets;
3278
3279 /*
3280 * If there's a matchset w/o an SSID, then assume it's just for
3281 * the RSSI (nothing else is currently supported) and ignore it.
3282 * The device only supports a global RSSI filter that we set below.
3283 */
3284 if (n_match_sets == 1 && !request->match_sets[0].ssid.ssid_len)
3285 n_match_sets = 0;
3286
3287 if (ar->state != ATH6KL_STATE_ON)
3288 return -EIO;
3289
3290 if (vif->sme_state != SME_DISCONNECTED)
3291 return -EBUSY;
3292
3293 ath6kl_cfg80211_scan_complete_event(vif, true);
3294
3295 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3296 request->n_ssids,
3297 request->match_sets,
3298 n_match_sets);
3299 if (ret < 0)
3300 return ret;
3301
3302 if (!n_match_sets) {
3303 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3304 ALL_BSS_FILTER, 0);
3305 if (ret < 0)
3306 return ret;
3307 } else {
3308 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3309 MATCHED_SSID_FILTER, 0);
3310 if (ret < 0)
3311 return ret;
3312 }
3313
3314 if (test_bit(ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD,
3315 ar->fw_capabilities)) {
3316 if (request->min_rssi_thold <= NL80211_SCAN_RSSI_THOLD_OFF)
3317 rssi_thold = 0;
3318 else if (request->min_rssi_thold < -127)
3319 rssi_thold = -127;
3320 else
3321 rssi_thold = request->min_rssi_thold;
3322
3323 ret = ath6kl_wmi_set_rssi_filter_cmd(ar->wmi, vif->fw_vif_idx,
3324 rssi_thold);
3325 if (ret) {
3326 ath6kl_err("failed to set RSSI threshold for scan\n");
3327 return ret;
3328 }
3329 }
3330
3331 /* fw uses seconds, also make sure that it's >0 */
3332 interval = max_t(u16, 1, request->scan_plans[0].interval);
3333
3334 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3335 interval, interval,
3336 vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3337
3338 /* this also clears IE in fw if it's not set */
3339 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3340 WMI_FRAME_PROBE_REQ,
3341 request->ie, request->ie_len);
3342 if (ret) {
3343 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n",
3344 ret);
3345 return ret;
3346 }
3347
3348 ret = ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, true);
3349 if (ret)
3350 return ret;
3351
3352 set_bit(SCHED_SCANNING, &vif->flags);
3353
3354 return 0;
3355 }
3356
3357 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3358 struct net_device *dev)
3359 {
3360 struct ath6kl_vif *vif = netdev_priv(dev);
3361 bool stopped;
3362
3363 stopped = __ath6kl_cfg80211_sscan_stop(vif);
3364
3365 if (!stopped)
3366 return -EIO;
3367
3368 return 0;
3369 }
3370
3371 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy,
3372 struct net_device *dev,
3373 const u8 *addr,
3374 const struct cfg80211_bitrate_mask *mask)
3375 {
3376 struct ath6kl *ar = ath6kl_priv(dev);
3377 struct ath6kl_vif *vif = netdev_priv(dev);
3378
3379 return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx,
3380 mask);
3381 }
3382
3383 static int ath6kl_cfg80211_set_txe_config(struct wiphy *wiphy,
3384 struct net_device *dev,
3385 u32 rate, u32 pkts, u32 intvl)
3386 {
3387 struct ath6kl *ar = ath6kl_priv(dev);
3388 struct ath6kl_vif *vif = netdev_priv(dev);
3389
3390 if (vif->nw_type != INFRA_NETWORK ||
3391 !test_bit(ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, ar->fw_capabilities))
3392 return -EOPNOTSUPP;
3393
3394 if (vif->sme_state != SME_CONNECTED)
3395 return -ENOTCONN;
3396
3397 /* save this since the firmware won't report the interval */
3398 vif->txe_intvl = intvl;
3399
3400 return ath6kl_wmi_set_txe_notify(ar->wmi, vif->fw_vif_idx,
3401 rate, pkts, intvl);
3402 }
3403
3404 static const struct ieee80211_txrx_stypes
3405 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3406 [NL80211_IFTYPE_STATION] = {
3407 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3408 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3409 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3410 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3411 },
3412 [NL80211_IFTYPE_AP] = {
3413 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3414 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3415 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3416 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3417 },
3418 [NL80211_IFTYPE_P2P_CLIENT] = {
3419 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3420 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3421 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3422 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3423 },
3424 [NL80211_IFTYPE_P2P_GO] = {
3425 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3426 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3427 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3428 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3429 },
3430 };
3431
3432 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3433 .add_virtual_intf = ath6kl_cfg80211_add_iface,
3434 .del_virtual_intf = ath6kl_cfg80211_del_iface,
3435 .change_virtual_intf = ath6kl_cfg80211_change_iface,
3436 .scan = ath6kl_cfg80211_scan,
3437 .connect = ath6kl_cfg80211_connect,
3438 .disconnect = ath6kl_cfg80211_disconnect,
3439 .add_key = ath6kl_cfg80211_add_key,
3440 .get_key = ath6kl_cfg80211_get_key,
3441 .del_key = ath6kl_cfg80211_del_key,
3442 .set_default_key = ath6kl_cfg80211_set_default_key,
3443 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3444 .set_tx_power = ath6kl_cfg80211_set_txpower,
3445 .get_tx_power = ath6kl_cfg80211_get_txpower,
3446 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3447 .join_ibss = ath6kl_cfg80211_join_ibss,
3448 .leave_ibss = ath6kl_cfg80211_leave_ibss,
3449 .get_station = ath6kl_get_station,
3450 .set_pmksa = ath6kl_set_pmksa,
3451 .del_pmksa = ath6kl_del_pmksa,
3452 .flush_pmksa = ath6kl_flush_pmksa,
3453 CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3454 #ifdef CONFIG_PM
3455 .suspend = __ath6kl_cfg80211_suspend,
3456 .resume = __ath6kl_cfg80211_resume,
3457 #endif
3458 .start_ap = ath6kl_start_ap,
3459 .change_beacon = ath6kl_change_beacon,
3460 .stop_ap = ath6kl_stop_ap,
3461 .del_station = ath6kl_del_station,
3462 .change_station = ath6kl_change_station,
3463 .remain_on_channel = ath6kl_remain_on_channel,
3464 .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3465 .mgmt_tx = ath6kl_mgmt_tx,
3466 .mgmt_frame_register = ath6kl_mgmt_frame_register,
3467 .get_antenna = ath6kl_get_antenna,
3468 .sched_scan_start = ath6kl_cfg80211_sscan_start,
3469 .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3470 .set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
3471 .set_cqm_txe_config = ath6kl_cfg80211_set_txe_config,
3472 };
3473
3474 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3475 {
3476 ath6kl_cfg80211_sscan_disable(vif);
3477
3478 switch (vif->sme_state) {
3479 case SME_DISCONNECTED:
3480 break;
3481 case SME_CONNECTING:
3482 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3483 NULL, 0,
3484 WLAN_STATUS_UNSPECIFIED_FAILURE,
3485 GFP_KERNEL);
3486 break;
3487 case SME_CONNECTED:
3488 cfg80211_disconnected(vif->ndev, 0, NULL, 0, true, GFP_KERNEL);
3489 break;
3490 }
3491
3492 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3493 (test_bit(CONNECTED, &vif->flags) ||
3494 test_bit(CONNECT_PEND, &vif->flags)))
3495 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3496
3497 vif->sme_state = SME_DISCONNECTED;
3498 clear_bit(CONNECTED, &vif->flags);
3499 clear_bit(CONNECT_PEND, &vif->flags);
3500
3501 /* Stop netdev queues, needed during recovery */
3502 netif_stop_queue(vif->ndev);
3503 netif_carrier_off(vif->ndev);
3504
3505 /* disable scanning */
3506 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3507 ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3508 0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3509 ath6kl_warn("failed to disable scan during stop\n");
3510
3511 ath6kl_cfg80211_scan_complete_event(vif, true);
3512 }
3513
3514 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3515 {
3516 struct ath6kl_vif *vif;
3517
3518 vif = ath6kl_vif_first(ar);
3519 if (!vif && ar->state != ATH6KL_STATE_RECOVERY) {
3520 /* save the current power mode before enabling power save */
3521 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3522
3523 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3524 ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3525 return;
3526 }
3527
3528 /*
3529 * FIXME: we should take ar->list_lock to protect changes in the
3530 * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3531 * sleeps.
3532 */
3533 list_for_each_entry(vif, &ar->vif_list, list)
3534 ath6kl_cfg80211_stop(vif);
3535 }
3536
3537 static void ath6kl_cfg80211_reg_notify(struct wiphy *wiphy,
3538 struct regulatory_request *request)
3539 {
3540 struct ath6kl *ar = wiphy_priv(wiphy);
3541 u32 rates[NUM_NL80211_BANDS];
3542 int ret, i;
3543
3544 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
3545 "cfg reg_notify %c%c%s%s initiator %d hint_type %d\n",
3546 request->alpha2[0], request->alpha2[1],
3547 request->intersect ? " intersect" : "",
3548 request->processed ? " processed" : "",
3549 request->initiator, request->user_reg_hint_type);
3550
3551 if (request->user_reg_hint_type != NL80211_USER_REG_HINT_CELL_BASE)
3552 return;
3553
3554 ret = ath6kl_wmi_set_regdomain_cmd(ar->wmi, request->alpha2);
3555 if (ret) {
3556 ath6kl_err("failed to set regdomain: %d\n", ret);
3557 return;
3558 }
3559
3560 /*
3561 * Firmware will apply the regdomain change only after a scan is
3562 * issued and it will send a WMI_REGDOMAIN_EVENTID when it has been
3563 * changed.
3564 */
3565
3566 for (i = 0; i < NUM_NL80211_BANDS; i++)
3567 if (wiphy->bands[i])
3568 rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
3569
3570
3571 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, 0, WMI_LONG_SCAN, false,
3572 false, 0, ATH6KL_FG_SCAN_INTERVAL,
3573 0, NULL, false, rates);
3574 if (ret) {
3575 ath6kl_err("failed to start scan for a regdomain change: %d\n",
3576 ret);
3577 return;
3578 }
3579 }
3580
3581 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3582 {
3583 vif->aggr_cntxt = aggr_init(vif);
3584 if (!vif->aggr_cntxt) {
3585 ath6kl_err("failed to initialize aggr\n");
3586 return -ENOMEM;
3587 }
3588
3589 setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3590 (unsigned long) vif->ndev);
3591 setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3592 (unsigned long) vif);
3593
3594 set_bit(WMM_ENABLED, &vif->flags);
3595 spin_lock_init(&vif->if_lock);
3596
3597 INIT_LIST_HEAD(&vif->mc_filter);
3598
3599 return 0;
3600 }
3601
3602 void ath6kl_cfg80211_vif_stop(struct ath6kl_vif *vif, bool wmi_ready)
3603 {
3604 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
3605 bool discon_issued;
3606
3607 netif_stop_queue(vif->ndev);
3608
3609 clear_bit(WLAN_ENABLED, &vif->flags);
3610
3611 if (wmi_ready) {
3612 discon_issued = test_bit(CONNECTED, &vif->flags) ||
3613 test_bit(CONNECT_PEND, &vif->flags);
3614 ath6kl_disconnect(vif);
3615 del_timer(&vif->disconnect_timer);
3616
3617 if (discon_issued)
3618 ath6kl_disconnect_event(vif, DISCONNECT_CMD,
3619 (vif->nw_type & AP_NETWORK) ?
3620 bcast_mac : vif->bssid,
3621 0, NULL, 0);
3622 }
3623
3624 if (vif->scan_req) {
3625 struct cfg80211_scan_info info = {
3626 .aborted = true,
3627 };
3628
3629 cfg80211_scan_done(vif->scan_req, &info);
3630 vif->scan_req = NULL;
3631 }
3632
3633 /* need to clean up enhanced bmiss detection fw state */
3634 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
3635 }
3636
3637 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3638 {
3639 struct ath6kl *ar = vif->ar;
3640 struct ath6kl_mc_filter *mc_filter, *tmp;
3641
3642 aggr_module_destroy(vif->aggr_cntxt);
3643
3644 ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3645
3646 if (vif->nw_type == ADHOC_NETWORK)
3647 ar->ibss_if_active = false;
3648
3649 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3650 list_del(&mc_filter->list);
3651 kfree(mc_filter);
3652 }
3653
3654 unregister_netdevice(vif->ndev);
3655
3656 ar->num_vif--;
3657 }
3658
3659 static const char ath6kl_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
3660 /* Common stats names used by many drivers. */
3661 "tx_pkts_nic", "tx_bytes_nic", "rx_pkts_nic", "rx_bytes_nic",
3662
3663 /* TX stats. */
3664 "d_tx_ucast_pkts", "d_tx_bcast_pkts",
3665 "d_tx_ucast_bytes", "d_tx_bcast_bytes",
3666 "d_tx_rts_ok", "d_tx_error", "d_tx_fail",
3667 "d_tx_retry", "d_tx_multi_retry", "d_tx_rts_fail",
3668 "d_tx_tkip_counter_measures",
3669
3670 /* RX Stats. */
3671 "d_rx_ucast_pkts", "d_rx_ucast_rate", "d_rx_bcast_pkts",
3672 "d_rx_ucast_bytes", "d_rx_bcast_bytes", "d_rx_frag_pkt",
3673 "d_rx_error", "d_rx_crc_err", "d_rx_keycache_miss",
3674 "d_rx_decrypt_crc_err", "d_rx_duplicate_frames",
3675 "d_rx_mic_err", "d_rx_tkip_format_err", "d_rx_ccmp_format_err",
3676 "d_rx_ccmp_replay_err",
3677
3678 /* Misc stats. */
3679 "d_beacon_miss", "d_num_connects", "d_num_disconnects",
3680 "d_beacon_avg_rssi", "d_arp_received", "d_arp_matched",
3681 "d_arp_replied"
3682 };
3683
3684 #define ATH6KL_STATS_LEN ARRAY_SIZE(ath6kl_gstrings_sta_stats)
3685
3686 static int ath6kl_get_sset_count(struct net_device *dev, int sset)
3687 {
3688 int rv = 0;
3689
3690 if (sset == ETH_SS_STATS)
3691 rv += ATH6KL_STATS_LEN;
3692
3693 if (rv == 0)
3694 return -EOPNOTSUPP;
3695 return rv;
3696 }
3697
3698 static void ath6kl_get_stats(struct net_device *dev,
3699 struct ethtool_stats *stats,
3700 u64 *data)
3701 {
3702 struct ath6kl_vif *vif = netdev_priv(dev);
3703 struct ath6kl *ar = vif->ar;
3704 int i = 0;
3705 struct target_stats *tgt_stats;
3706
3707 memset(data, 0, sizeof(u64) * ATH6KL_STATS_LEN);
3708
3709 ath6kl_read_tgt_stats(ar, vif);
3710
3711 tgt_stats = &vif->target_stats;
3712
3713 data[i++] = tgt_stats->tx_ucast_pkt + tgt_stats->tx_bcast_pkt;
3714 data[i++] = tgt_stats->tx_ucast_byte + tgt_stats->tx_bcast_byte;
3715 data[i++] = tgt_stats->rx_ucast_pkt + tgt_stats->rx_bcast_pkt;
3716 data[i++] = tgt_stats->rx_ucast_byte + tgt_stats->rx_bcast_byte;
3717
3718 data[i++] = tgt_stats->tx_ucast_pkt;
3719 data[i++] = tgt_stats->tx_bcast_pkt;
3720 data[i++] = tgt_stats->tx_ucast_byte;
3721 data[i++] = tgt_stats->tx_bcast_byte;
3722 data[i++] = tgt_stats->tx_rts_success_cnt;
3723 data[i++] = tgt_stats->tx_err;
3724 data[i++] = tgt_stats->tx_fail_cnt;
3725 data[i++] = tgt_stats->tx_retry_cnt;
3726 data[i++] = tgt_stats->tx_mult_retry_cnt;
3727 data[i++] = tgt_stats->tx_rts_fail_cnt;
3728 data[i++] = tgt_stats->tkip_cnter_measures_invoked;
3729
3730 data[i++] = tgt_stats->rx_ucast_pkt;
3731 data[i++] = tgt_stats->rx_ucast_rate;
3732 data[i++] = tgt_stats->rx_bcast_pkt;
3733 data[i++] = tgt_stats->rx_ucast_byte;
3734 data[i++] = tgt_stats->rx_bcast_byte;
3735 data[i++] = tgt_stats->rx_frgment_pkt;
3736 data[i++] = tgt_stats->rx_err;
3737 data[i++] = tgt_stats->rx_crc_err;
3738 data[i++] = tgt_stats->rx_key_cache_miss;
3739 data[i++] = tgt_stats->rx_decrypt_err;
3740 data[i++] = tgt_stats->rx_dupl_frame;
3741 data[i++] = tgt_stats->tkip_local_mic_fail;
3742 data[i++] = tgt_stats->tkip_fmt_err;
3743 data[i++] = tgt_stats->ccmp_fmt_err;
3744 data[i++] = tgt_stats->ccmp_replays;
3745
3746 data[i++] = tgt_stats->cs_bmiss_cnt;
3747 data[i++] = tgt_stats->cs_connect_cnt;
3748 data[i++] = tgt_stats->cs_discon_cnt;
3749 data[i++] = tgt_stats->cs_ave_beacon_rssi;
3750 data[i++] = tgt_stats->arp_received;
3751 data[i++] = tgt_stats->arp_matched;
3752 data[i++] = tgt_stats->arp_replied;
3753
3754 if (i != ATH6KL_STATS_LEN) {
3755 WARN_ON_ONCE(1);
3756 ath6kl_err("ethtool stats error, i: %d STATS_LEN: %d\n",
3757 i, (int)ATH6KL_STATS_LEN);
3758 }
3759 }
3760
3761 /* These stats are per NIC, not really per vdev, so we just ignore dev. */
3762 static void ath6kl_get_strings(struct net_device *dev, u32 sset, u8 *data)
3763 {
3764 int sz_sta_stats = 0;
3765
3766 if (sset == ETH_SS_STATS) {
3767 sz_sta_stats = sizeof(ath6kl_gstrings_sta_stats);
3768 memcpy(data, ath6kl_gstrings_sta_stats, sz_sta_stats);
3769 }
3770 }
3771
3772 static const struct ethtool_ops ath6kl_ethtool_ops = {
3773 .get_drvinfo = cfg80211_get_drvinfo,
3774 .get_link = ethtool_op_get_link,
3775 .get_strings = ath6kl_get_strings,
3776 .get_ethtool_stats = ath6kl_get_stats,
3777 .get_sset_count = ath6kl_get_sset_count,
3778 };
3779
3780 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
3781 unsigned char name_assign_type,
3782 enum nl80211_iftype type,
3783 u8 fw_vif_idx, u8 nw_type)
3784 {
3785 struct net_device *ndev;
3786 struct ath6kl_vif *vif;
3787
3788 ndev = alloc_netdev(sizeof(*vif), name, name_assign_type, ether_setup);
3789 if (!ndev)
3790 return NULL;
3791
3792 vif = netdev_priv(ndev);
3793 ndev->ieee80211_ptr = &vif->wdev;
3794 vif->wdev.wiphy = ar->wiphy;
3795 vif->ar = ar;
3796 vif->ndev = ndev;
3797 SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3798 vif->wdev.netdev = ndev;
3799 vif->wdev.iftype = type;
3800 vif->fw_vif_idx = fw_vif_idx;
3801 vif->nw_type = nw_type;
3802 vif->next_mode = nw_type;
3803 vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3804 vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3805 vif->bg_scan_period = 0;
3806 vif->htcap[NL80211_BAND_2GHZ].ht_enable = true;
3807 vif->htcap[NL80211_BAND_5GHZ].ht_enable = true;
3808
3809 memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3810 if (fw_vif_idx != 0) {
3811 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3812 0x2;
3813 if (test_bit(ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR,
3814 ar->fw_capabilities))
3815 ndev->dev_addr[4] ^= 0x80;
3816 }
3817
3818 init_netdev(ndev);
3819
3820 ath6kl_init_control_info(vif);
3821
3822 if (ath6kl_cfg80211_vif_init(vif))
3823 goto err;
3824
3825 netdev_set_default_ethtool_ops(ndev, &ath6kl_ethtool_ops);
3826
3827 if (register_netdevice(ndev))
3828 goto err;
3829
3830 ar->avail_idx_map &= ~BIT(fw_vif_idx);
3831 vif->sme_state = SME_DISCONNECTED;
3832 set_bit(WLAN_ENABLED, &vif->flags);
3833 ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3834
3835 if (type == NL80211_IFTYPE_ADHOC)
3836 ar->ibss_if_active = true;
3837
3838 spin_lock_bh(&ar->list_lock);
3839 list_add_tail(&vif->list, &ar->vif_list);
3840 spin_unlock_bh(&ar->list_lock);
3841
3842 return &vif->wdev;
3843
3844 err:
3845 aggr_module_destroy(vif->aggr_cntxt);
3846 free_netdev(ndev);
3847 return NULL;
3848 }
3849
3850 #ifdef CONFIG_PM
3851 static const struct wiphy_wowlan_support ath6kl_wowlan_support = {
3852 .flags = WIPHY_WOWLAN_MAGIC_PKT |
3853 WIPHY_WOWLAN_DISCONNECT |
3854 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
3855 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
3856 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
3857 WIPHY_WOWLAN_4WAY_HANDSHAKE,
3858 .n_patterns = WOW_MAX_FILTERS_PER_LIST,
3859 .pattern_min_len = 1,
3860 .pattern_max_len = WOW_PATTERN_SIZE,
3861 };
3862 #endif
3863
3864 int ath6kl_cfg80211_init(struct ath6kl *ar)
3865 {
3866 struct wiphy *wiphy = ar->wiphy;
3867 bool band_2gig = false, band_5gig = false, ht = false;
3868 int ret;
3869
3870 wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3871
3872 wiphy->max_remain_on_channel_duration = 5000;
3873
3874 /* set device pointer for wiphy */
3875 set_wiphy_dev(wiphy, ar->dev);
3876
3877 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3878 BIT(NL80211_IFTYPE_ADHOC) |
3879 BIT(NL80211_IFTYPE_AP);
3880 if (ar->p2p) {
3881 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3882 BIT(NL80211_IFTYPE_P2P_CLIENT);
3883 }
3884
3885 if (IS_ENABLED(CONFIG_ATH6KL_REGDOMAIN) &&
3886 test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) {
3887 wiphy->reg_notifier = ath6kl_cfg80211_reg_notify;
3888 ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS;
3889 }
3890
3891 /* max num of ssids that can be probed during scanning */
3892 wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3893
3894 /* max num of ssids that can be matched after scan */
3895 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST,
3896 ar->fw_capabilities))
3897 wiphy->max_match_sets = MAX_PROBED_SSIDS;
3898
3899 wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3900 switch (ar->hw.cap) {
3901 case WMI_11AN_CAP:
3902 ht = true;
3903 case WMI_11A_CAP:
3904 band_5gig = true;
3905 break;
3906 case WMI_11GN_CAP:
3907 ht = true;
3908 case WMI_11G_CAP:
3909 band_2gig = true;
3910 break;
3911 case WMI_11AGN_CAP:
3912 ht = true;
3913 case WMI_11AG_CAP:
3914 band_2gig = true;
3915 band_5gig = true;
3916 break;
3917 default:
3918 ath6kl_err("invalid phy capability!\n");
3919 return -EINVAL;
3920 }
3921
3922 /*
3923 * Even if the fw has HT support, advertise HT cap only when
3924 * the firmware has support to override RSN capability, otherwise
3925 * 4-way handshake would fail.
3926 */
3927 if (!(ht &&
3928 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3929 ar->fw_capabilities))) {
3930 ath6kl_band_2ghz.ht_cap.cap = 0;
3931 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3932 ath6kl_band_5ghz.ht_cap.cap = 0;
3933 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3934
3935 if (ht)
3936 ath6kl_err("Firmware lacks RSN-CAP-OVERRIDE, so HT (802.11n) is disabled.");
3937 }
3938
3939 if (test_bit(ATH6KL_FW_CAPABILITY_64BIT_RATES,
3940 ar->fw_capabilities)) {
3941 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3942 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3943 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3944 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3945 ar->hw.tx_ant = 0x3; /* mask, 2 antenna */
3946 ar->hw.rx_ant = 0x3;
3947 } else {
3948 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3949 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3950 ar->hw.tx_ant = 1;
3951 ar->hw.rx_ant = 1;
3952 }
3953
3954 wiphy->available_antennas_tx = ar->hw.tx_ant;
3955 wiphy->available_antennas_rx = ar->hw.rx_ant;
3956
3957 if (band_2gig)
3958 wiphy->bands[NL80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3959 if (band_5gig)
3960 wiphy->bands[NL80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3961
3962 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3963
3964 wiphy->cipher_suites = cipher_suites;
3965 wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3966
3967 #ifdef CONFIG_PM
3968 wiphy->wowlan = &ath6kl_wowlan_support;
3969 #endif
3970
3971 wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3972
3973 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3974 WIPHY_FLAG_HAVE_AP_SME |
3975 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3976 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3977
3978 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities))
3979 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
3980
3981 if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3982 ar->fw_capabilities))
3983 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
3984
3985 ar->wiphy->probe_resp_offload =
3986 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3987 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3988 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3989
3990 ret = wiphy_register(wiphy);
3991 if (ret < 0) {
3992 ath6kl_err("couldn't register wiphy device\n");
3993 return ret;
3994 }
3995
3996 ar->wiphy_registered = true;
3997
3998 return 0;
3999 }
4000
4001 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
4002 {
4003 wiphy_unregister(ar->wiphy);
4004
4005 ar->wiphy_registered = false;
4006 }
4007
4008 struct ath6kl *ath6kl_cfg80211_create(void)
4009 {
4010 struct ath6kl *ar;
4011 struct wiphy *wiphy;
4012
4013 /* create a new wiphy for use with cfg80211 */
4014 wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
4015
4016 if (!wiphy) {
4017 ath6kl_err("couldn't allocate wiphy device\n");
4018 return NULL;
4019 }
4020
4021 ar = wiphy_priv(wiphy);
4022 ar->wiphy = wiphy;
4023
4024 return ar;
4025 }
4026
4027 /* Note: ar variable must not be accessed after calling this! */
4028 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
4029 {
4030 int i;
4031
4032 for (i = 0; i < AP_MAX_NUM_STA; i++)
4033 kfree(ar->sta_list[i].aggr_conn);
4034
4035 wiphy_free(ar->wiphy);
4036 }
4037
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