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UBUNTU: Ubuntu-4.13.0-45.50
[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(36, 0), CHAN5G(40, 0),
106 CHAN5G(44, 0), CHAN5G(48, 0),
107 CHAN5G(52, 0), CHAN5G(56, 0),
108 CHAN5G(60, 0), CHAN5G(64, 0),
109 CHAN5G(100, 0), CHAN5G(104, 0),
110 CHAN5G(108, 0), CHAN5G(112, 0),
111 CHAN5G(116, 0), CHAN5G(120, 0),
112 CHAN5G(124, 0), CHAN5G(128, 0),
113 CHAN5G(132, 0), CHAN5G(136, 0),
114 CHAN5G(140, 0), CHAN5G(149, 0),
115 CHAN5G(153, 0), CHAN5G(157, 0),
116 CHAN5G(161, 0), CHAN5G(165, 0),
117 CHAN5G(184, 0), CHAN5G(188, 0),
118 CHAN5G(192, 0), CHAN5G(196, 0),
119 CHAN5G(200, 0), CHAN5G(204, 0),
120 CHAN5G(208, 0), CHAN5G(212, 0),
121 CHAN5G(216, 0),
122 };
123
124 static struct ieee80211_supported_band ath6kl_band_2ghz = {
125 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels),
126 .channels = ath6kl_2ghz_channels,
127 .n_bitrates = ath6kl_g_rates_size,
128 .bitrates = ath6kl_g_rates,
129 .ht_cap.cap = ath6kl_g_htcap,
130 .ht_cap.ht_supported = true,
131 };
132
133 static struct ieee80211_supported_band ath6kl_band_5ghz = {
134 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels),
135 .channels = ath6kl_5ghz_a_channels,
136 .n_bitrates = ath6kl_a_rates_size,
137 .bitrates = ath6kl_a_rates,
138 .ht_cap.cap = ath6kl_a_htcap,
139 .ht_cap.ht_supported = true,
140 };
141
142 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */
143
144 /* returns true if scheduled scan was stopped */
145 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif)
146 {
147 struct ath6kl *ar = vif->ar;
148
149 if (!test_and_clear_bit(SCHED_SCANNING, &vif->flags))
150 return false;
151
152 del_timer_sync(&vif->sched_scan_timer);
153
154 if (ar->state == ATH6KL_STATE_RECOVERY)
155 return true;
156
157 ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, false);
158
159 return true;
160 }
161
162 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif)
163 {
164 struct ath6kl *ar = vif->ar;
165 bool stopped;
166
167 stopped = __ath6kl_cfg80211_sscan_stop(vif);
168
169 if (!stopped)
170 return;
171
172 cfg80211_sched_scan_stopped(ar->wiphy, 0);
173 }
174
175 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif,
176 enum nl80211_wpa_versions wpa_version)
177 {
178 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version);
179
180 if (!wpa_version) {
181 vif->auth_mode = NONE_AUTH;
182 } else if (wpa_version & NL80211_WPA_VERSION_2) {
183 vif->auth_mode = WPA2_AUTH;
184 } else if (wpa_version & NL80211_WPA_VERSION_1) {
185 vif->auth_mode = WPA_AUTH;
186 } else {
187 ath6kl_err("%s: %u not supported\n", __func__, wpa_version);
188 return -ENOTSUPP;
189 }
190
191 return 0;
192 }
193
194 static int ath6kl_set_auth_type(struct ath6kl_vif *vif,
195 enum nl80211_auth_type auth_type)
196 {
197 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type);
198
199 switch (auth_type) {
200 case NL80211_AUTHTYPE_OPEN_SYSTEM:
201 vif->dot11_auth_mode = OPEN_AUTH;
202 break;
203 case NL80211_AUTHTYPE_SHARED_KEY:
204 vif->dot11_auth_mode = SHARED_AUTH;
205 break;
206 case NL80211_AUTHTYPE_NETWORK_EAP:
207 vif->dot11_auth_mode = LEAP_AUTH;
208 break;
209
210 case NL80211_AUTHTYPE_AUTOMATIC:
211 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH;
212 break;
213
214 default:
215 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type);
216 return -ENOTSUPP;
217 }
218
219 return 0;
220 }
221
222 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast)
223 {
224 u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto;
225 u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len :
226 &vif->grp_crypto_len;
227
228 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n",
229 __func__, cipher, ucast);
230
231 switch (cipher) {
232 case 0:
233 /* our own hack to use value 0 as no crypto used */
234 *ar_cipher = NONE_CRYPT;
235 *ar_cipher_len = 0;
236 break;
237 case WLAN_CIPHER_SUITE_WEP40:
238 *ar_cipher = WEP_CRYPT;
239 *ar_cipher_len = 5;
240 break;
241 case WLAN_CIPHER_SUITE_WEP104:
242 *ar_cipher = WEP_CRYPT;
243 *ar_cipher_len = 13;
244 break;
245 case WLAN_CIPHER_SUITE_TKIP:
246 *ar_cipher = TKIP_CRYPT;
247 *ar_cipher_len = 0;
248 break;
249 case WLAN_CIPHER_SUITE_CCMP:
250 *ar_cipher = AES_CRYPT;
251 *ar_cipher_len = 0;
252 break;
253 case WLAN_CIPHER_SUITE_SMS4:
254 *ar_cipher = WAPI_CRYPT;
255 *ar_cipher_len = 0;
256 break;
257 default:
258 ath6kl_err("cipher 0x%x not supported\n", cipher);
259 return -ENOTSUPP;
260 }
261
262 return 0;
263 }
264
265 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt)
266 {
267 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt);
268
269 if (key_mgmt == WLAN_AKM_SUITE_PSK) {
270 if (vif->auth_mode == WPA_AUTH)
271 vif->auth_mode = WPA_PSK_AUTH;
272 else if (vif->auth_mode == WPA2_AUTH)
273 vif->auth_mode = WPA2_PSK_AUTH;
274 } else if (key_mgmt == 0x00409600) {
275 if (vif->auth_mode == WPA_AUTH)
276 vif->auth_mode = WPA_AUTH_CCKM;
277 else if (vif->auth_mode == WPA2_AUTH)
278 vif->auth_mode = WPA2_AUTH_CCKM;
279 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) {
280 vif->auth_mode = NONE_AUTH;
281 }
282 }
283
284 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif)
285 {
286 struct ath6kl *ar = vif->ar;
287
288 if (!test_bit(WMI_READY, &ar->flag)) {
289 ath6kl_err("wmi is not ready\n");
290 return false;
291 }
292
293 if (!test_bit(WLAN_ENABLED, &vif->flags)) {
294 ath6kl_err("wlan disabled\n");
295 return false;
296 }
297
298 return true;
299 }
300
301 static bool ath6kl_is_wpa_ie(const u8 *pos)
302 {
303 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
304 pos[2] == 0x00 && pos[3] == 0x50 &&
305 pos[4] == 0xf2 && pos[5] == 0x01;
306 }
307
308 static bool ath6kl_is_rsn_ie(const u8 *pos)
309 {
310 return pos[0] == WLAN_EID_RSN;
311 }
312
313 static bool ath6kl_is_wps_ie(const u8 *pos)
314 {
315 return (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
316 pos[1] >= 4 &&
317 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 &&
318 pos[5] == 0x04);
319 }
320
321 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies,
322 size_t ies_len)
323 {
324 struct ath6kl *ar = vif->ar;
325 const u8 *pos;
326 u8 *buf = NULL;
327 size_t len = 0;
328 int ret;
329
330 /*
331 * Clear previously set flag
332 */
333
334 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
335
336 /*
337 * Filter out RSN/WPA IE(s)
338 */
339
340 if (ies && ies_len) {
341 buf = kmalloc(ies_len, GFP_KERNEL);
342 if (buf == NULL)
343 return -ENOMEM;
344 pos = ies;
345
346 while (pos + 1 < ies + ies_len) {
347 if (pos + 2 + pos[1] > ies + ies_len)
348 break;
349 if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) {
350 memcpy(buf + len, pos, 2 + pos[1]);
351 len += 2 + pos[1];
352 }
353
354 if (ath6kl_is_wps_ie(pos))
355 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG;
356
357 pos += 2 + pos[1];
358 }
359 }
360
361 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
362 WMI_FRAME_ASSOC_REQ, buf, len);
363 kfree(buf);
364 return ret;
365 }
366
367 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type)
368 {
369 switch (type) {
370 case NL80211_IFTYPE_STATION:
371 case NL80211_IFTYPE_P2P_CLIENT:
372 *nw_type = INFRA_NETWORK;
373 break;
374 case NL80211_IFTYPE_ADHOC:
375 *nw_type = ADHOC_NETWORK;
376 break;
377 case NL80211_IFTYPE_AP:
378 case NL80211_IFTYPE_P2P_GO:
379 *nw_type = AP_NETWORK;
380 break;
381 default:
382 ath6kl_err("invalid interface type %u\n", type);
383 return -ENOTSUPP;
384 }
385
386 return 0;
387 }
388
389 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type,
390 u8 *if_idx, u8 *nw_type)
391 {
392 int i;
393
394 if (ath6kl_nliftype_to_drv_iftype(type, nw_type))
395 return false;
396
397 if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) &&
398 ar->num_vif))
399 return false;
400
401 if (type == NL80211_IFTYPE_STATION ||
402 type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
403 for (i = 0; i < ar->vif_max; i++) {
404 if ((ar->avail_idx_map) & BIT(i)) {
405 *if_idx = i;
406 return true;
407 }
408 }
409 }
410
411 if (type == NL80211_IFTYPE_P2P_CLIENT ||
412 type == NL80211_IFTYPE_P2P_GO) {
413 for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
414 if ((ar->avail_idx_map) & BIT(i)) {
415 *if_idx = i;
416 return true;
417 }
418 }
419 }
420
421 return false;
422 }
423
424 static bool ath6kl_is_tx_pending(struct ath6kl *ar)
425 {
426 return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0;
427 }
428
429 static void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif,
430 bool enable)
431 {
432 int err;
433
434 if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
435 return;
436
437 if (vif->nw_type != INFRA_NETWORK)
438 return;
439
440 if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
441 vif->ar->fw_capabilities))
442 return;
443
444 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
445 enable ? "enable" : "disable");
446
447 err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
448 vif->fw_vif_idx, enable);
449 if (err)
450 ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
451 enable ? "enable" : "disable", err);
452 }
453
454 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
455 struct cfg80211_connect_params *sme)
456 {
457 struct ath6kl *ar = ath6kl_priv(dev);
458 struct ath6kl_vif *vif = netdev_priv(dev);
459 int status;
460 u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
461 u16 interval;
462
463 ath6kl_cfg80211_sscan_disable(vif);
464
465 vif->sme_state = SME_CONNECTING;
466
467 if (!ath6kl_cfg80211_ready(vif))
468 return -EIO;
469
470 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
471 ath6kl_err("destroy in progress\n");
472 return -EBUSY;
473 }
474
475 if (test_bit(SKIP_SCAN, &ar->flag) &&
476 ((sme->channel && sme->channel->center_freq == 0) ||
477 (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
478 ath6kl_err("SkipScan: channel or bssid invalid\n");
479 return -EINVAL;
480 }
481
482 if (down_interruptible(&ar->sem)) {
483 ath6kl_err("busy, couldn't get access\n");
484 return -ERESTARTSYS;
485 }
486
487 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
488 ath6kl_err("busy, destroy in progress\n");
489 up(&ar->sem);
490 return -EBUSY;
491 }
492
493 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
494 /*
495 * sleep until the command queue drains
496 */
497 wait_event_interruptible_timeout(ar->event_wq,
498 ath6kl_is_tx_pending(ar),
499 WMI_TIMEOUT);
500 if (signal_pending(current)) {
501 ath6kl_err("cmd queue drain timeout\n");
502 up(&ar->sem);
503 return -EINTR;
504 }
505 }
506
507 status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
508 if (status) {
509 up(&ar->sem);
510 return status;
511 }
512
513 if (sme->ie == NULL || sme->ie_len == 0)
514 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
515
516 if (test_bit(CONNECTED, &vif->flags) &&
517 vif->ssid_len == sme->ssid_len &&
518 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
519 vif->reconnect_flag = true;
520 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx,
521 vif->req_bssid,
522 vif->ch_hint);
523
524 up(&ar->sem);
525 if (status) {
526 ath6kl_err("wmi_reconnect_cmd failed\n");
527 return -EIO;
528 }
529 return 0;
530 } else if (vif->ssid_len == sme->ssid_len &&
531 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
532 ath6kl_disconnect(vif);
533 }
534
535 memset(vif->ssid, 0, sizeof(vif->ssid));
536 vif->ssid_len = sme->ssid_len;
537 memcpy(vif->ssid, sme->ssid, sme->ssid_len);
538
539 if (sme->channel)
540 vif->ch_hint = sme->channel->center_freq;
541
542 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
543 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
544 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid));
545
546 ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions);
547
548 status = ath6kl_set_auth_type(vif, sme->auth_type);
549 if (status) {
550 up(&ar->sem);
551 return status;
552 }
553
554 if (sme->crypto.n_ciphers_pairwise)
555 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true);
556 else
557 ath6kl_set_cipher(vif, 0, true);
558
559 ath6kl_set_cipher(vif, sme->crypto.cipher_group, false);
560
561 if (sme->crypto.n_akm_suites)
562 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]);
563
564 if ((sme->key_len) &&
565 (vif->auth_mode == NONE_AUTH) &&
566 (vif->prwise_crypto == WEP_CRYPT)) {
567 struct ath6kl_key *key = NULL;
568
569 if (sme->key_idx > WMI_MAX_KEY_INDEX) {
570 ath6kl_err("key index %d out of bounds\n",
571 sme->key_idx);
572 up(&ar->sem);
573 return -ENOENT;
574 }
575
576 key = &vif->keys[sme->key_idx];
577 key->key_len = sme->key_len;
578 memcpy(key->key, sme->key, key->key_len);
579 key->cipher = vif->prwise_crypto;
580 vif->def_txkey_index = sme->key_idx;
581
582 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx,
583 vif->prwise_crypto,
584 GROUP_USAGE | TX_USAGE,
585 key->key_len,
586 NULL, 0,
587 key->key, KEY_OP_INIT_VAL, NULL,
588 NO_SYNC_WMIFLAG);
589 }
590
591 if (!ar->usr_bss_filter) {
592 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
593 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
594 ALL_BSS_FILTER, 0) != 0) {
595 ath6kl_err("couldn't set bss filtering\n");
596 up(&ar->sem);
597 return -EIO;
598 }
599 }
600
601 vif->nw_type = vif->next_mode;
602
603 /* enable enhanced bmiss detection if applicable */
604 ath6kl_cfg80211_sta_bmiss_enhance(vif, true);
605
606 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
607 nw_subtype = SUBTYPE_P2PCLIENT;
608
609 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
610 "%s: connect called with authmode %d dot11 auth %d"
611 " PW crypto %d PW crypto len %d GRP crypto %d"
612 " GRP crypto len %d channel hint %u\n",
613 __func__,
614 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
615 vif->prwise_crypto_len, vif->grp_crypto,
616 vif->grp_crypto_len, vif->ch_hint);
617
618 vif->reconnect_flag = 0;
619
620 if (vif->nw_type == INFRA_NETWORK) {
621 interval = max_t(u16, vif->listen_intvl_t,
622 ATH6KL_MAX_WOW_LISTEN_INTL);
623 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
624 interval,
625 0);
626 if (status) {
627 ath6kl_err("couldn't set listen intervel\n");
628 up(&ar->sem);
629 return status;
630 }
631 }
632
633 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
634 vif->dot11_auth_mode, vif->auth_mode,
635 vif->prwise_crypto,
636 vif->prwise_crypto_len,
637 vif->grp_crypto, vif->grp_crypto_len,
638 vif->ssid_len, vif->ssid,
639 vif->req_bssid, vif->ch_hint,
640 ar->connect_ctrl_flags, nw_subtype);
641
642 if (sme->bg_scan_period == 0) {
643 /* disable background scan if period is 0 */
644 sme->bg_scan_period = 0xffff;
645 } else if (sme->bg_scan_period == -1) {
646 /* configure default value if not specified */
647 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
648 }
649
650 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
651 sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
652
653 up(&ar->sem);
654
655 if (status == -EINVAL) {
656 memset(vif->ssid, 0, sizeof(vif->ssid));
657 vif->ssid_len = 0;
658 ath6kl_err("invalid request\n");
659 return -ENOENT;
660 } else if (status) {
661 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
662 return -EIO;
663 }
664
665 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
666 ((vif->auth_mode == WPA_PSK_AUTH) ||
667 (vif->auth_mode == WPA2_PSK_AUTH))) {
668 mod_timer(&vif->disconnect_timer,
669 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
670 }
671
672 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
673 set_bit(CONNECT_PEND, &vif->flags);
674
675 return 0;
676 }
677
678 static struct cfg80211_bss *
679 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif,
680 enum network_type nw_type,
681 const u8 *bssid,
682 struct ieee80211_channel *chan,
683 const u8 *beacon_ie,
684 size_t beacon_ie_len)
685 {
686 struct ath6kl *ar = vif->ar;
687 struct cfg80211_bss *bss;
688 u16 cap_val;
689 enum ieee80211_bss_type bss_type;
690 u8 *ie;
691
692 if (nw_type & ADHOC_NETWORK) {
693 cap_val = WLAN_CAPABILITY_IBSS;
694 bss_type = IEEE80211_BSS_TYPE_IBSS;
695 } else {
696 cap_val = WLAN_CAPABILITY_ESS;
697 bss_type = IEEE80211_BSS_TYPE_ESS;
698 }
699
700 bss = cfg80211_get_bss(ar->wiphy, chan, bssid,
701 vif->ssid, vif->ssid_len,
702 bss_type, IEEE80211_PRIVACY_ANY);
703 if (bss == NULL) {
704 /*
705 * Since cfg80211 may not yet know about the BSS,
706 * generate a partial entry until the first BSS info
707 * event becomes available.
708 *
709 * Prepend SSID element since it is not included in the Beacon
710 * IEs from the target.
711 */
712 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL);
713 if (ie == NULL)
714 return NULL;
715 ie[0] = WLAN_EID_SSID;
716 ie[1] = vif->ssid_len;
717 memcpy(ie + 2, vif->ssid, vif->ssid_len);
718 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len);
719 bss = cfg80211_inform_bss(ar->wiphy, chan,
720 CFG80211_BSS_FTYPE_UNKNOWN,
721 bssid, 0, cap_val, 100,
722 ie, 2 + vif->ssid_len + beacon_ie_len,
723 0, GFP_KERNEL);
724 if (bss)
725 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
726 "added bss %pM to cfg80211\n", bssid);
727 kfree(ie);
728 } else {
729 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n");
730 }
731
732 return bss;
733 }
734
735 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
736 u8 *bssid, u16 listen_intvl,
737 u16 beacon_intvl,
738 enum network_type nw_type,
739 u8 beacon_ie_len, u8 assoc_req_len,
740 u8 assoc_resp_len, u8 *assoc_info)
741 {
742 struct ieee80211_channel *chan;
743 struct ath6kl *ar = vif->ar;
744 struct cfg80211_bss *bss;
745
746 /* capinfo + listen interval */
747 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
748
749 /* capinfo + status code + associd */
750 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
751
752 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
753 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
754 assoc_resp_ie_offset;
755
756 assoc_req_len -= assoc_req_ie_offset;
757 assoc_resp_len -= assoc_resp_ie_offset;
758
759 /*
760 * Store Beacon interval here; DTIM period will be available only once
761 * a Beacon frame from the AP is seen.
762 */
763 vif->assoc_bss_beacon_int = beacon_intvl;
764 clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
765
766 if (nw_type & ADHOC_NETWORK) {
767 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
768 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
769 "%s: ath6k not in ibss mode\n", __func__);
770 return;
771 }
772 }
773
774 if (nw_type & INFRA_NETWORK) {
775 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
776 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
777 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
778 "%s: ath6k not in station mode\n", __func__);
779 return;
780 }
781 }
782
783 chan = ieee80211_get_channel(ar->wiphy, (int) channel);
784
785 bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
786 assoc_info, beacon_ie_len);
787 if (!bss) {
788 ath6kl_err("could not add cfg80211 bss entry\n");
789 return;
790 }
791
792 if (nw_type & ADHOC_NETWORK) {
793 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
794 nw_type & ADHOC_CREATOR ? "creator" : "joiner");
795 cfg80211_ibss_joined(vif->ndev, bssid, chan, GFP_KERNEL);
796 cfg80211_put_bss(ar->wiphy, bss);
797 return;
798 }
799
800 if (vif->sme_state == SME_CONNECTING) {
801 /* inform connect result to cfg80211 */
802 vif->sme_state = SME_CONNECTED;
803 cfg80211_connect_result(vif->ndev, bssid,
804 assoc_req_ie, assoc_req_len,
805 assoc_resp_ie, assoc_resp_len,
806 WLAN_STATUS_SUCCESS, GFP_KERNEL);
807 cfg80211_put_bss(ar->wiphy, bss);
808 } else if (vif->sme_state == SME_CONNECTED) {
809 struct cfg80211_roam_info roam_info = {
810 .bss = bss,
811 .req_ie = assoc_req_ie,
812 .req_ie_len = assoc_req_len,
813 .resp_ie = assoc_resp_ie,
814 .resp_ie_len = assoc_resp_len,
815 };
816 /* inform roam event to cfg80211 */
817 cfg80211_roamed(vif->ndev, &roam_info, GFP_KERNEL);
818 }
819 }
820
821 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
822 struct net_device *dev, u16 reason_code)
823 {
824 struct ath6kl *ar = ath6kl_priv(dev);
825 struct ath6kl_vif *vif = netdev_priv(dev);
826
827 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
828 reason_code);
829
830 ath6kl_cfg80211_sscan_disable(vif);
831
832 if (!ath6kl_cfg80211_ready(vif))
833 return -EIO;
834
835 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
836 ath6kl_err("busy, destroy in progress\n");
837 return -EBUSY;
838 }
839
840 if (down_interruptible(&ar->sem)) {
841 ath6kl_err("busy, couldn't get access\n");
842 return -ERESTARTSYS;
843 }
844
845 vif->reconnect_flag = 0;
846 ath6kl_disconnect(vif);
847 memset(vif->ssid, 0, sizeof(vif->ssid));
848 vif->ssid_len = 0;
849
850 if (!test_bit(SKIP_SCAN, &ar->flag))
851 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
852
853 up(&ar->sem);
854
855 return 0;
856 }
857
858 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
859 u8 *bssid, u8 assoc_resp_len,
860 u8 *assoc_info, u16 proto_reason)
861 {
862 struct ath6kl *ar = vif->ar;
863
864 if (vif->scan_req) {
865 struct cfg80211_scan_info info = {
866 .aborted = true,
867 };
868
869 cfg80211_scan_done(vif->scan_req, &info);
870 vif->scan_req = NULL;
871 }
872
873 if (vif->nw_type & ADHOC_NETWORK) {
874 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC)
875 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
876 "%s: ath6k not in ibss mode\n", __func__);
877 return;
878 }
879
880 if (vif->nw_type & INFRA_NETWORK) {
881 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
882 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
883 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
884 "%s: ath6k not in station mode\n", __func__);
885 return;
886 }
887 }
888
889 clear_bit(CONNECT_PEND, &vif->flags);
890
891 if (vif->sme_state == SME_CONNECTING) {
892 cfg80211_connect_result(vif->ndev,
893 bssid, NULL, 0,
894 NULL, 0,
895 WLAN_STATUS_UNSPECIFIED_FAILURE,
896 GFP_KERNEL);
897 } else if (vif->sme_state == SME_CONNECTED) {
898 cfg80211_disconnected(vif->ndev, proto_reason,
899 NULL, 0, false, GFP_KERNEL);
900 }
901
902 vif->sme_state = SME_DISCONNECTED;
903
904 /*
905 * Send a disconnect command to target when a disconnect event is
906 * received with reason code other than 3 (DISCONNECT_CMD - disconnect
907 * request from host) to make the firmware stop trying to connect even
908 * after giving disconnect event. There will be one more disconnect
909 * event for this disconnect command with reason code DISCONNECT_CMD
910 * which won't be notified to cfg80211.
911 */
912 if (reason != DISCONNECT_CMD)
913 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
914 }
915
916 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
917 struct ath6kl_vif *vif,
918 struct cfg80211_ssid *ssids, int n_ssids,
919 struct cfg80211_match_set *match_set,
920 int n_match_ssid)
921 {
922 u8 i, j, index_to_add, ssid_found = false;
923 struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS];
924
925 memset(ssid_list, 0, sizeof(ssid_list));
926
927 if (n_ssids > MAX_PROBED_SSIDS ||
928 n_match_ssid > MAX_PROBED_SSIDS)
929 return -EINVAL;
930
931 for (i = 0; i < n_ssids; i++) {
932 memcpy(ssid_list[i].ssid.ssid,
933 ssids[i].ssid,
934 ssids[i].ssid_len);
935 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len;
936
937 if (ssids[i].ssid_len)
938 ssid_list[i].flag = SPECIFIC_SSID_FLAG;
939 else
940 ssid_list[i].flag = ANY_SSID_FLAG;
941
942 if (n_match_ssid == 0)
943 ssid_list[i].flag |= MATCH_SSID_FLAG;
944 }
945
946 index_to_add = i;
947
948 for (i = 0; i < n_match_ssid; i++) {
949 ssid_found = false;
950
951 for (j = 0; j < n_ssids; j++) {
952 if ((match_set[i].ssid.ssid_len ==
953 ssid_list[j].ssid.ssid_len) &&
954 (!memcmp(ssid_list[j].ssid.ssid,
955 match_set[i].ssid.ssid,
956 match_set[i].ssid.ssid_len))) {
957 ssid_list[j].flag |= MATCH_SSID_FLAG;
958 ssid_found = true;
959 break;
960 }
961 }
962
963 if (ssid_found)
964 continue;
965
966 if (index_to_add >= MAX_PROBED_SSIDS)
967 continue;
968
969 ssid_list[index_to_add].ssid.ssid_len =
970 match_set[i].ssid.ssid_len;
971 memcpy(ssid_list[index_to_add].ssid.ssid,
972 match_set[i].ssid.ssid,
973 match_set[i].ssid.ssid_len);
974 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG;
975 index_to_add++;
976 }
977
978 for (i = 0; i < index_to_add; i++) {
979 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
980 ssid_list[i].flag,
981 ssid_list[i].ssid.ssid_len,
982 ssid_list[i].ssid.ssid);
983 }
984
985 /* Make sure no old entries are left behind */
986 for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) {
987 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
988 DISABLE_SSID_FLAG, 0, NULL);
989 }
990
991 return 0;
992 }
993
994 static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
995 struct cfg80211_scan_request *request)
996 {
997 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
998 struct ath6kl *ar = ath6kl_priv(vif->ndev);
999 s8 n_channels = 0;
1000 u16 *channels = NULL;
1001 int ret = 0;
1002 u32 force_fg_scan = 0;
1003
1004 if (!ath6kl_cfg80211_ready(vif))
1005 return -EIO;
1006
1007 ath6kl_cfg80211_sscan_disable(vif);
1008
1009 if (!ar->usr_bss_filter) {
1010 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1011 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1012 ALL_BSS_FILTER, 0);
1013 if (ret) {
1014 ath6kl_err("couldn't set bss filtering\n");
1015 return ret;
1016 }
1017 }
1018
1019 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
1020 request->n_ssids, NULL, 0);
1021 if (ret < 0)
1022 return ret;
1023
1024 /* this also clears IE in fw if it's not set */
1025 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
1026 WMI_FRAME_PROBE_REQ,
1027 request->ie, request->ie_len);
1028 if (ret) {
1029 ath6kl_err("failed to set Probe Request appie for scan\n");
1030 return ret;
1031 }
1032
1033 /*
1034 * Scan only the requested channels if the request specifies a set of
1035 * channels. If the list is longer than the target supports, do not
1036 * configure the list and instead, scan all available channels.
1037 */
1038 if (request->n_channels > 0 &&
1039 request->n_channels <= WMI_MAX_CHANNELS) {
1040 u8 i;
1041
1042 n_channels = request->n_channels;
1043
1044 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
1045 if (channels == NULL) {
1046 ath6kl_warn("failed to set scan channels, scan all channels");
1047 n_channels = 0;
1048 }
1049
1050 for (i = 0; i < n_channels; i++)
1051 channels[i] = request->channels[i]->center_freq;
1052 }
1053
1054 if (test_bit(CONNECTED, &vif->flags))
1055 force_fg_scan = 1;
1056
1057 vif->scan_req = request;
1058
1059 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
1060 WMI_LONG_SCAN, force_fg_scan,
1061 false, 0,
1062 ATH6KL_FG_SCAN_INTERVAL,
1063 n_channels, channels,
1064 request->no_cck,
1065 request->rates);
1066 if (ret) {
1067 ath6kl_err("failed to start scan: %d\n", ret);
1068 vif->scan_req = NULL;
1069 }
1070
1071 kfree(channels);
1072
1073 return ret;
1074 }
1075
1076 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1077 {
1078 struct ath6kl *ar = vif->ar;
1079 struct cfg80211_scan_info info = {
1080 .aborted = aborted,
1081 };
1082 int i;
1083
1084 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1085 aborted ? " aborted" : "");
1086
1087 if (!vif->scan_req)
1088 return;
1089
1090 if (aborted)
1091 goto out;
1092
1093 if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1094 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1095 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1096 i + 1, DISABLE_SSID_FLAG,
1097 0, NULL);
1098 }
1099 }
1100
1101 out:
1102 cfg80211_scan_done(vif->scan_req, &info);
1103 vif->scan_req = NULL;
1104 }
1105
1106 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1107 enum wmi_phy_mode mode)
1108 {
1109 struct cfg80211_chan_def chandef;
1110
1111 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1112 "channel switch notify nw_type %d freq %d mode %d\n",
1113 vif->nw_type, freq, mode);
1114
1115 cfg80211_chandef_create(&chandef,
1116 ieee80211_get_channel(vif->ar->wiphy, freq),
1117 (mode == WMI_11G_HT20 &&
1118 ath6kl_band_2ghz.ht_cap.ht_supported) ?
1119 NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT);
1120
1121 mutex_lock(&vif->wdev.mtx);
1122 cfg80211_ch_switch_notify(vif->ndev, &chandef);
1123 mutex_unlock(&vif->wdev.mtx);
1124 }
1125
1126 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1127 u8 key_index, bool pairwise,
1128 const u8 *mac_addr,
1129 struct key_params *params)
1130 {
1131 struct ath6kl *ar = ath6kl_priv(ndev);
1132 struct ath6kl_vif *vif = netdev_priv(ndev);
1133 struct ath6kl_key *key = NULL;
1134 int seq_len;
1135 u8 key_usage;
1136 u8 key_type;
1137
1138 if (!ath6kl_cfg80211_ready(vif))
1139 return -EIO;
1140
1141 if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1142 if (params->key_len != WMI_KRK_LEN)
1143 return -EINVAL;
1144 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1145 params->key);
1146 }
1147
1148 if (key_index > WMI_MAX_KEY_INDEX) {
1149 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1150 "%s: key index %d out of bounds\n", __func__,
1151 key_index);
1152 return -ENOENT;
1153 }
1154
1155 key = &vif->keys[key_index];
1156 memset(key, 0, sizeof(struct ath6kl_key));
1157
1158 if (pairwise)
1159 key_usage = PAIRWISE_USAGE;
1160 else
1161 key_usage = GROUP_USAGE;
1162
1163 seq_len = params->seq_len;
1164 if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1165 seq_len > ATH6KL_KEY_SEQ_LEN) {
1166 /* Only first half of the WPI PN is configured */
1167 seq_len = ATH6KL_KEY_SEQ_LEN;
1168 }
1169 if (params->key_len > WLAN_MAX_KEY_LEN ||
1170 seq_len > sizeof(key->seq))
1171 return -EINVAL;
1172
1173 key->key_len = params->key_len;
1174 memcpy(key->key, params->key, key->key_len);
1175 key->seq_len = seq_len;
1176 memcpy(key->seq, params->seq, key->seq_len);
1177 key->cipher = params->cipher;
1178
1179 switch (key->cipher) {
1180 case WLAN_CIPHER_SUITE_WEP40:
1181 case WLAN_CIPHER_SUITE_WEP104:
1182 key_type = WEP_CRYPT;
1183 break;
1184
1185 case WLAN_CIPHER_SUITE_TKIP:
1186 key_type = TKIP_CRYPT;
1187 break;
1188
1189 case WLAN_CIPHER_SUITE_CCMP:
1190 key_type = AES_CRYPT;
1191 break;
1192 case WLAN_CIPHER_SUITE_SMS4:
1193 key_type = WAPI_CRYPT;
1194 break;
1195
1196 default:
1197 return -ENOTSUPP;
1198 }
1199
1200 if (((vif->auth_mode == WPA_PSK_AUTH) ||
1201 (vif->auth_mode == WPA2_PSK_AUTH)) &&
1202 (key_usage & GROUP_USAGE))
1203 del_timer(&vif->disconnect_timer);
1204
1205 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1206 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1207 __func__, key_index, key->key_len, key_type,
1208 key_usage, key->seq_len);
1209
1210 if (vif->nw_type == AP_NETWORK && !pairwise &&
1211 (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1212 key_type == WAPI_CRYPT)) {
1213 ar->ap_mode_bkey.valid = true;
1214 ar->ap_mode_bkey.key_index = key_index;
1215 ar->ap_mode_bkey.key_type = key_type;
1216 ar->ap_mode_bkey.key_len = key->key_len;
1217 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1218 if (!test_bit(CONNECTED, &vif->flags)) {
1219 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1220 "Delay initial group key configuration until AP mode has been started\n");
1221 /*
1222 * The key will be set in ath6kl_connect_ap_mode() once
1223 * the connected event is received from the target.
1224 */
1225 return 0;
1226 }
1227 }
1228
1229 if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1230 !test_bit(CONNECTED, &vif->flags)) {
1231 /*
1232 * Store the key locally so that it can be re-configured after
1233 * the AP mode has properly started
1234 * (ath6kl_install_statioc_wep_keys).
1235 */
1236 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1237 "Delay WEP key configuration until AP mode has been started\n");
1238 vif->wep_key_list[key_index].key_len = key->key_len;
1239 memcpy(vif->wep_key_list[key_index].key, key->key,
1240 key->key_len);
1241 return 0;
1242 }
1243
1244 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1245 key_type, key_usage, key->key_len,
1246 key->seq, key->seq_len, key->key,
1247 KEY_OP_INIT_VAL,
1248 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1249 }
1250
1251 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1252 u8 key_index, bool pairwise,
1253 const u8 *mac_addr)
1254 {
1255 struct ath6kl *ar = ath6kl_priv(ndev);
1256 struct ath6kl_vif *vif = netdev_priv(ndev);
1257
1258 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1259
1260 if (!ath6kl_cfg80211_ready(vif))
1261 return -EIO;
1262
1263 if (key_index > WMI_MAX_KEY_INDEX) {
1264 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1265 "%s: key index %d out of bounds\n", __func__,
1266 key_index);
1267 return -ENOENT;
1268 }
1269
1270 if (!vif->keys[key_index].key_len) {
1271 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1272 "%s: index %d is empty\n", __func__, key_index);
1273 return 0;
1274 }
1275
1276 vif->keys[key_index].key_len = 0;
1277
1278 return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1279 }
1280
1281 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1282 u8 key_index, bool pairwise,
1283 const u8 *mac_addr, void *cookie,
1284 void (*callback) (void *cookie,
1285 struct key_params *))
1286 {
1287 struct ath6kl_vif *vif = netdev_priv(ndev);
1288 struct ath6kl_key *key = NULL;
1289 struct key_params params;
1290
1291 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1292
1293 if (!ath6kl_cfg80211_ready(vif))
1294 return -EIO;
1295
1296 if (key_index > WMI_MAX_KEY_INDEX) {
1297 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1298 "%s: key index %d out of bounds\n", __func__,
1299 key_index);
1300 return -ENOENT;
1301 }
1302
1303 key = &vif->keys[key_index];
1304 memset(&params, 0, sizeof(params));
1305 params.cipher = key->cipher;
1306 params.key_len = key->key_len;
1307 params.seq_len = key->seq_len;
1308 params.seq = key->seq;
1309 params.key = key->key;
1310
1311 callback(cookie, &params);
1312
1313 return key->key_len ? 0 : -ENOENT;
1314 }
1315
1316 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1317 struct net_device *ndev,
1318 u8 key_index, bool unicast,
1319 bool multicast)
1320 {
1321 struct ath6kl *ar = ath6kl_priv(ndev);
1322 struct ath6kl_vif *vif = netdev_priv(ndev);
1323 struct ath6kl_key *key = NULL;
1324 u8 key_usage;
1325 enum crypto_type key_type = NONE_CRYPT;
1326
1327 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1328
1329 if (!ath6kl_cfg80211_ready(vif))
1330 return -EIO;
1331
1332 if (key_index > WMI_MAX_KEY_INDEX) {
1333 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1334 "%s: key index %d out of bounds\n",
1335 __func__, key_index);
1336 return -ENOENT;
1337 }
1338
1339 if (!vif->keys[key_index].key_len) {
1340 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1341 __func__, key_index);
1342 return -EINVAL;
1343 }
1344
1345 vif->def_txkey_index = key_index;
1346 key = &vif->keys[vif->def_txkey_index];
1347 key_usage = GROUP_USAGE;
1348 if (vif->prwise_crypto == WEP_CRYPT)
1349 key_usage |= TX_USAGE;
1350 if (unicast)
1351 key_type = vif->prwise_crypto;
1352 if (multicast)
1353 key_type = vif->grp_crypto;
1354
1355 if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1356 return 0; /* Delay until AP mode has been started */
1357
1358 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1359 vif->def_txkey_index,
1360 key_type, key_usage,
1361 key->key_len, key->seq, key->seq_len,
1362 key->key,
1363 KEY_OP_INIT_VAL, NULL,
1364 SYNC_BOTH_WMIFLAG);
1365 }
1366
1367 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1368 bool ismcast)
1369 {
1370 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1371 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1372
1373 cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1374 (ismcast ? NL80211_KEYTYPE_GROUP :
1375 NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1376 GFP_KERNEL);
1377 }
1378
1379 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1380 {
1381 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1382 struct ath6kl_vif *vif;
1383 int ret;
1384
1385 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1386 changed);
1387
1388 vif = ath6kl_vif_first(ar);
1389 if (!vif)
1390 return -EIO;
1391
1392 if (!ath6kl_cfg80211_ready(vif))
1393 return -EIO;
1394
1395 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1396 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1397 if (ret != 0) {
1398 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1399 return -EIO;
1400 }
1401 }
1402
1403 return 0;
1404 }
1405
1406 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1407 struct wireless_dev *wdev,
1408 enum nl80211_tx_power_setting type,
1409 int mbm)
1410 {
1411 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1412 struct ath6kl_vif *vif;
1413 int dbm = MBM_TO_DBM(mbm);
1414
1415 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1416 type, dbm);
1417
1418 vif = ath6kl_vif_first(ar);
1419 if (!vif)
1420 return -EIO;
1421
1422 if (!ath6kl_cfg80211_ready(vif))
1423 return -EIO;
1424
1425 switch (type) {
1426 case NL80211_TX_POWER_AUTOMATIC:
1427 return 0;
1428 case NL80211_TX_POWER_LIMITED:
1429 ar->tx_pwr = dbm;
1430 break;
1431 default:
1432 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1433 __func__, type);
1434 return -EOPNOTSUPP;
1435 }
1436
1437 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1438
1439 return 0;
1440 }
1441
1442 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy,
1443 struct wireless_dev *wdev,
1444 int *dbm)
1445 {
1446 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1447 struct ath6kl_vif *vif;
1448
1449 vif = ath6kl_vif_first(ar);
1450 if (!vif)
1451 return -EIO;
1452
1453 if (!ath6kl_cfg80211_ready(vif))
1454 return -EIO;
1455
1456 if (test_bit(CONNECTED, &vif->flags)) {
1457 ar->tx_pwr = 255;
1458
1459 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1460 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1461 return -EIO;
1462 }
1463
1464 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 255,
1465 5 * HZ);
1466
1467 if (signal_pending(current)) {
1468 ath6kl_err("target did not respond\n");
1469 return -EINTR;
1470 }
1471 }
1472
1473 *dbm = ar->tx_pwr;
1474 return 0;
1475 }
1476
1477 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1478 struct net_device *dev,
1479 bool pmgmt, int timeout)
1480 {
1481 struct ath6kl *ar = ath6kl_priv(dev);
1482 struct wmi_power_mode_cmd mode;
1483 struct ath6kl_vif *vif = netdev_priv(dev);
1484
1485 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1486 __func__, pmgmt, timeout);
1487
1488 if (!ath6kl_cfg80211_ready(vif))
1489 return -EIO;
1490
1491 if (pmgmt) {
1492 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1493 mode.pwr_mode = REC_POWER;
1494 } else {
1495 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1496 mode.pwr_mode = MAX_PERF_POWER;
1497 }
1498
1499 if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1500 mode.pwr_mode) != 0) {
1501 ath6kl_err("wmi_powermode_cmd failed\n");
1502 return -EIO;
1503 }
1504
1505 return 0;
1506 }
1507
1508 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1509 const char *name,
1510 unsigned char name_assign_type,
1511 enum nl80211_iftype type,
1512 struct vif_params *params)
1513 {
1514 struct ath6kl *ar = wiphy_priv(wiphy);
1515 struct wireless_dev *wdev;
1516 u8 if_idx, nw_type;
1517
1518 if (ar->num_vif == ar->vif_max) {
1519 ath6kl_err("Reached maximum number of supported vif\n");
1520 return ERR_PTR(-EINVAL);
1521 }
1522
1523 if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1524 ath6kl_err("Not a supported interface type\n");
1525 return ERR_PTR(-EINVAL);
1526 }
1527
1528 wdev = ath6kl_interface_add(ar, name, name_assign_type, type, if_idx, nw_type);
1529 if (!wdev)
1530 return ERR_PTR(-ENOMEM);
1531
1532 ar->num_vif++;
1533
1534 return wdev;
1535 }
1536
1537 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1538 struct wireless_dev *wdev)
1539 {
1540 struct ath6kl *ar = wiphy_priv(wiphy);
1541 struct ath6kl_vif *vif = netdev_priv(wdev->netdev);
1542
1543 spin_lock_bh(&ar->list_lock);
1544 list_del(&vif->list);
1545 spin_unlock_bh(&ar->list_lock);
1546
1547 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1548
1549 rtnl_lock();
1550 ath6kl_cfg80211_vif_cleanup(vif);
1551 rtnl_unlock();
1552
1553 return 0;
1554 }
1555
1556 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1557 struct net_device *ndev,
1558 enum nl80211_iftype type,
1559 struct vif_params *params)
1560 {
1561 struct ath6kl_vif *vif = netdev_priv(ndev);
1562 int i;
1563
1564 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1565
1566 /*
1567 * Don't bring up p2p on an interface which is not initialized
1568 * for p2p operation where fw does not have capability to switch
1569 * dynamically between non-p2p and p2p type interface.
1570 */
1571 if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1572 vif->ar->fw_capabilities) &&
1573 (type == NL80211_IFTYPE_P2P_CLIENT ||
1574 type == NL80211_IFTYPE_P2P_GO)) {
1575 if (vif->ar->vif_max == 1) {
1576 if (vif->fw_vif_idx != 0)
1577 return -EINVAL;
1578 else
1579 goto set_iface_type;
1580 }
1581
1582 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1583 if (i == vif->fw_vif_idx)
1584 break;
1585 }
1586
1587 if (i == vif->ar->vif_max) {
1588 ath6kl_err("Invalid interface to bring up P2P\n");
1589 return -EINVAL;
1590 }
1591 }
1592
1593 /* need to clean up enhanced bmiss detection fw state */
1594 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1595
1596 set_iface_type:
1597 switch (type) {
1598 case NL80211_IFTYPE_STATION:
1599 case NL80211_IFTYPE_P2P_CLIENT:
1600 vif->next_mode = INFRA_NETWORK;
1601 break;
1602 case NL80211_IFTYPE_ADHOC:
1603 vif->next_mode = ADHOC_NETWORK;
1604 break;
1605 case NL80211_IFTYPE_AP:
1606 case NL80211_IFTYPE_P2P_GO:
1607 vif->next_mode = AP_NETWORK;
1608 break;
1609 default:
1610 ath6kl_err("invalid interface type %u\n", type);
1611 return -EOPNOTSUPP;
1612 }
1613
1614 vif->wdev.iftype = type;
1615
1616 return 0;
1617 }
1618
1619 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1620 struct net_device *dev,
1621 struct cfg80211_ibss_params *ibss_param)
1622 {
1623 struct ath6kl *ar = ath6kl_priv(dev);
1624 struct ath6kl_vif *vif = netdev_priv(dev);
1625 int status;
1626
1627 if (!ath6kl_cfg80211_ready(vif))
1628 return -EIO;
1629
1630 vif->ssid_len = ibss_param->ssid_len;
1631 memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1632
1633 if (ibss_param->chandef.chan)
1634 vif->ch_hint = ibss_param->chandef.chan->center_freq;
1635
1636 if (ibss_param->channel_fixed) {
1637 /*
1638 * TODO: channel_fixed: The channel should be fixed, do not
1639 * search for IBSSs to join on other channels. Target
1640 * firmware does not support this feature, needs to be
1641 * updated.
1642 */
1643 return -EOPNOTSUPP;
1644 }
1645
1646 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1647 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1648 memcpy(vif->req_bssid, ibss_param->bssid,
1649 sizeof(vif->req_bssid));
1650
1651 ath6kl_set_wpa_version(vif, 0);
1652
1653 status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1654 if (status)
1655 return status;
1656
1657 if (ibss_param->privacy) {
1658 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1659 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1660 } else {
1661 ath6kl_set_cipher(vif, 0, true);
1662 ath6kl_set_cipher(vif, 0, false);
1663 }
1664
1665 vif->nw_type = vif->next_mode;
1666
1667 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1668 "%s: connect called with authmode %d dot11 auth %d"
1669 " PW crypto %d PW crypto len %d GRP crypto %d"
1670 " GRP crypto len %d channel hint %u\n",
1671 __func__,
1672 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1673 vif->prwise_crypto_len, vif->grp_crypto,
1674 vif->grp_crypto_len, vif->ch_hint);
1675
1676 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1677 vif->dot11_auth_mode, vif->auth_mode,
1678 vif->prwise_crypto,
1679 vif->prwise_crypto_len,
1680 vif->grp_crypto, vif->grp_crypto_len,
1681 vif->ssid_len, vif->ssid,
1682 vif->req_bssid, vif->ch_hint,
1683 ar->connect_ctrl_flags, SUBTYPE_NONE);
1684 set_bit(CONNECT_PEND, &vif->flags);
1685
1686 return 0;
1687 }
1688
1689 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1690 struct net_device *dev)
1691 {
1692 struct ath6kl_vif *vif = netdev_priv(dev);
1693
1694 if (!ath6kl_cfg80211_ready(vif))
1695 return -EIO;
1696
1697 ath6kl_disconnect(vif);
1698 memset(vif->ssid, 0, sizeof(vif->ssid));
1699 vif->ssid_len = 0;
1700
1701 return 0;
1702 }
1703
1704 static const u32 cipher_suites[] = {
1705 WLAN_CIPHER_SUITE_WEP40,
1706 WLAN_CIPHER_SUITE_WEP104,
1707 WLAN_CIPHER_SUITE_TKIP,
1708 WLAN_CIPHER_SUITE_CCMP,
1709 CCKM_KRK_CIPHER_SUITE,
1710 WLAN_CIPHER_SUITE_SMS4,
1711 };
1712
1713 static bool is_rate_legacy(s32 rate)
1714 {
1715 static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1716 6000, 9000, 12000, 18000, 24000,
1717 36000, 48000, 54000
1718 };
1719 u8 i;
1720
1721 for (i = 0; i < ARRAY_SIZE(legacy); i++)
1722 if (rate == legacy[i])
1723 return true;
1724
1725 return false;
1726 }
1727
1728 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1729 {
1730 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1731 52000, 58500, 65000, 72200
1732 };
1733 u8 i;
1734
1735 for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1736 if (rate == ht20[i]) {
1737 if (i == ARRAY_SIZE(ht20) - 1)
1738 /* last rate uses sgi */
1739 *sgi = true;
1740 else
1741 *sgi = false;
1742
1743 *mcs = i;
1744 return true;
1745 }
1746 }
1747 return false;
1748 }
1749
1750 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1751 {
1752 static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1753 81000, 108000, 121500, 135000,
1754 150000
1755 };
1756 u8 i;
1757
1758 for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1759 if (rate == ht40[i]) {
1760 if (i == ARRAY_SIZE(ht40) - 1)
1761 /* last rate uses sgi */
1762 *sgi = true;
1763 else
1764 *sgi = false;
1765
1766 *mcs = i;
1767 return true;
1768 }
1769 }
1770
1771 return false;
1772 }
1773
1774 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1775 const u8 *mac, struct station_info *sinfo)
1776 {
1777 struct ath6kl *ar = ath6kl_priv(dev);
1778 struct ath6kl_vif *vif = netdev_priv(dev);
1779 long left;
1780 bool sgi;
1781 s32 rate;
1782 int ret;
1783 u8 mcs;
1784
1785 if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1786 return -ENOENT;
1787
1788 if (down_interruptible(&ar->sem))
1789 return -EBUSY;
1790
1791 set_bit(STATS_UPDATE_PEND, &vif->flags);
1792
1793 ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1794
1795 if (ret != 0) {
1796 up(&ar->sem);
1797 return -EIO;
1798 }
1799
1800 left = wait_event_interruptible_timeout(ar->event_wq,
1801 !test_bit(STATS_UPDATE_PEND,
1802 &vif->flags),
1803 WMI_TIMEOUT);
1804
1805 up(&ar->sem);
1806
1807 if (left == 0)
1808 return -ETIMEDOUT;
1809 else if (left < 0)
1810 return left;
1811
1812 if (vif->target_stats.rx_byte) {
1813 sinfo->rx_bytes = vif->target_stats.rx_byte;
1814 sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64);
1815 sinfo->rx_packets = vif->target_stats.rx_pkt;
1816 sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
1817 }
1818
1819 if (vif->target_stats.tx_byte) {
1820 sinfo->tx_bytes = vif->target_stats.tx_byte;
1821 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64);
1822 sinfo->tx_packets = vif->target_stats.tx_pkt;
1823 sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
1824 }
1825
1826 sinfo->signal = vif->target_stats.cs_rssi;
1827 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1828
1829 rate = vif->target_stats.tx_ucast_rate;
1830
1831 if (is_rate_legacy(rate)) {
1832 sinfo->txrate.legacy = rate / 100;
1833 } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1834 if (sgi) {
1835 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1836 sinfo->txrate.mcs = mcs - 1;
1837 } else {
1838 sinfo->txrate.mcs = mcs;
1839 }
1840
1841 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1842 sinfo->txrate.bw = RATE_INFO_BW_20;
1843 } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1844 if (sgi) {
1845 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1846 sinfo->txrate.mcs = mcs - 1;
1847 } else {
1848 sinfo->txrate.mcs = mcs;
1849 }
1850
1851 sinfo->txrate.bw = RATE_INFO_BW_40;
1852 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1853 } else {
1854 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1855 "invalid rate from stats: %d\n", rate);
1856 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1857 return 0;
1858 }
1859
1860 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1861
1862 if (test_bit(CONNECTED, &vif->flags) &&
1863 test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1864 vif->nw_type == INFRA_NETWORK) {
1865 sinfo->filled |= BIT(NL80211_STA_INFO_BSS_PARAM);
1866 sinfo->bss_param.flags = 0;
1867 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1868 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1869 }
1870
1871 return 0;
1872 }
1873
1874 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1875 struct cfg80211_pmksa *pmksa)
1876 {
1877 struct ath6kl *ar = ath6kl_priv(netdev);
1878 struct ath6kl_vif *vif = netdev_priv(netdev);
1879
1880 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1881 pmksa->pmkid, true);
1882 }
1883
1884 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1885 struct cfg80211_pmksa *pmksa)
1886 {
1887 struct ath6kl *ar = ath6kl_priv(netdev);
1888 struct ath6kl_vif *vif = netdev_priv(netdev);
1889
1890 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1891 pmksa->pmkid, false);
1892 }
1893
1894 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1895 {
1896 struct ath6kl *ar = ath6kl_priv(netdev);
1897 struct ath6kl_vif *vif = netdev_priv(netdev);
1898
1899 if (test_bit(CONNECTED, &vif->flags))
1900 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1901 vif->bssid, NULL, false);
1902 return 0;
1903 }
1904
1905 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1906 struct cfg80211_wowlan *wow, u32 *filter)
1907 {
1908 int ret, pos;
1909 u8 mask[WOW_PATTERN_SIZE];
1910 u16 i;
1911
1912 /* Configure the patterns that we received from the user. */
1913 for (i = 0; i < wow->n_patterns; i++) {
1914 /*
1915 * Convert given nl80211 specific mask value to equivalent
1916 * driver specific mask value and send it to the chip along
1917 * with patterns. For example, If the mask value defined in
1918 * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1919 * then equivalent driver specific mask value is
1920 * "0xFF 0x00 0xFF 0x00".
1921 */
1922 memset(&mask, 0, sizeof(mask));
1923 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1924 if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1925 mask[pos] = 0xFF;
1926 }
1927 /*
1928 * Note: Pattern's offset is not passed as part of wowlan
1929 * parameter from CFG layer. So it's always passed as ZERO
1930 * to the firmware. It means, given WOW patterns are always
1931 * matched from the first byte of received pkt in the firmware.
1932 */
1933 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1934 vif->fw_vif_idx, WOW_LIST_ID,
1935 wow->patterns[i].pattern_len,
1936 0 /* pattern offset */,
1937 wow->patterns[i].pattern, mask);
1938 if (ret)
1939 return ret;
1940 }
1941
1942 if (wow->disconnect)
1943 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1944
1945 if (wow->magic_pkt)
1946 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1947
1948 if (wow->gtk_rekey_failure)
1949 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1950
1951 if (wow->eap_identity_req)
1952 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1953
1954 if (wow->four_way_handshake)
1955 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1956
1957 return 0;
1958 }
1959
1960 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1961 {
1962 static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1963 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1964 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1965 0x00, 0x08 };
1966 static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1967 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1968 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1969 0x00, 0x7f };
1970 u8 unicst_offset = 0;
1971 static const u8 arp_pattern[] = { 0x08, 0x06 };
1972 static const u8 arp_mask[] = { 0xff, 0xff };
1973 u8 arp_offset = 20;
1974 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1975 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1976 u8 discvr_offset = 38;
1977 static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1978 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1979 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1980 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1981 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1982 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1983 static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1984 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1985 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1986 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1987 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1988 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1989 u8 dhcp_offset = 0;
1990 int ret;
1991
1992 /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1993 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1994 vif->fw_vif_idx, WOW_LIST_ID,
1995 sizeof(unicst_pattern), unicst_offset,
1996 unicst_pattern, unicst_mask);
1997 if (ret) {
1998 ath6kl_err("failed to add WOW unicast IP pattern\n");
1999 return ret;
2000 }
2001
2002 /* Setup all ARP pkt pattern */
2003 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2004 vif->fw_vif_idx, WOW_LIST_ID,
2005 sizeof(arp_pattern), arp_offset,
2006 arp_pattern, arp_mask);
2007 if (ret) {
2008 ath6kl_err("failed to add WOW ARP pattern\n");
2009 return ret;
2010 }
2011
2012 /*
2013 * Setup multicast pattern for mDNS 224.0.0.251,
2014 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2015 */
2016 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2017 vif->fw_vif_idx, WOW_LIST_ID,
2018 sizeof(discvr_pattern), discvr_offset,
2019 discvr_pattern, discvr_mask);
2020 if (ret) {
2021 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2022 return ret;
2023 }
2024
2025 /* Setup all DHCP broadcast pkt pattern */
2026 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2027 vif->fw_vif_idx, WOW_LIST_ID,
2028 sizeof(dhcp_pattern), dhcp_offset,
2029 dhcp_pattern, dhcp_mask);
2030 if (ret) {
2031 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2032 return ret;
2033 }
2034
2035 return 0;
2036 }
2037
2038 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2039 {
2040 struct net_device *ndev = vif->ndev;
2041 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2042 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2043 u8 discvr_offset = 38;
2044 u8 mac_mask[ETH_ALEN];
2045 int ret;
2046
2047 /* Setup unicast pkt pattern */
2048 eth_broadcast_addr(mac_mask);
2049 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2050 vif->fw_vif_idx, WOW_LIST_ID,
2051 ETH_ALEN, 0, ndev->dev_addr,
2052 mac_mask);
2053 if (ret) {
2054 ath6kl_err("failed to add WOW unicast pattern\n");
2055 return ret;
2056 }
2057
2058 /*
2059 * Setup multicast pattern for mDNS 224.0.0.251,
2060 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2061 */
2062 if ((ndev->flags & IFF_ALLMULTI) ||
2063 (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2064 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2065 vif->fw_vif_idx, WOW_LIST_ID,
2066 sizeof(discvr_pattern), discvr_offset,
2067 discvr_pattern, discvr_mask);
2068 if (ret) {
2069 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2070 return ret;
2071 }
2072 }
2073
2074 return 0;
2075 }
2076
2077 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2078 {
2079 return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2080 }
2081
2082 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2083 {
2084 return !ar->tx_pending[ar->ctrl_ep];
2085 }
2086
2087 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2088 {
2089 int ret, left;
2090
2091 clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2092
2093 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2094 ATH6KL_HOST_MODE_ASLEEP);
2095 if (ret)
2096 return ret;
2097
2098 left = wait_event_interruptible_timeout(ar->event_wq,
2099 is_hsleep_mode_procsed(vif),
2100 WMI_TIMEOUT);
2101 if (left == 0) {
2102 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2103 ret = -ETIMEDOUT;
2104 } else if (left < 0) {
2105 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2106 left);
2107 ret = left;
2108 }
2109
2110 if (ar->tx_pending[ar->ctrl_ep]) {
2111 left = wait_event_interruptible_timeout(ar->event_wq,
2112 is_ctrl_ep_empty(ar),
2113 WMI_TIMEOUT);
2114 if (left == 0) {
2115 ath6kl_warn("clear wmi ctrl data timeout\n");
2116 ret = -ETIMEDOUT;
2117 } else if (left < 0) {
2118 ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2119 ret = left;
2120 }
2121 }
2122
2123 return ret;
2124 }
2125
2126 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif,
2127 struct cfg80211_wowlan *wow, u32 *filter)
2128 {
2129 struct ath6kl *ar = vif->ar;
2130 struct in_device *in_dev;
2131 struct in_ifaddr *ifa;
2132 int ret;
2133 u16 i, bmiss_time;
2134 __be32 ips[MAX_IP_ADDRS];
2135 u8 index = 0;
2136
2137 if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2138 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2139 ar->fw_capabilities)) {
2140 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2141 vif->fw_vif_idx, false);
2142 if (ret)
2143 return ret;
2144 }
2145
2146 /* Clear existing WOW patterns */
2147 for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2148 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2149 WOW_LIST_ID, i);
2150
2151 /*
2152 * Skip the default WOW pattern configuration
2153 * if the driver receives any WOW patterns from
2154 * the user.
2155 */
2156 if (wow)
2157 ret = ath6kl_wow_usr(ar, vif, wow, filter);
2158 else if (vif->nw_type == AP_NETWORK)
2159 ret = ath6kl_wow_ap(ar, vif);
2160 else
2161 ret = ath6kl_wow_sta(ar, vif);
2162
2163 if (ret)
2164 return ret;
2165
2166 netif_stop_queue(vif->ndev);
2167
2168 if (vif->nw_type != AP_NETWORK) {
2169 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2170 ATH6KL_MAX_WOW_LISTEN_INTL,
2171 0);
2172 if (ret)
2173 return ret;
2174
2175 /* Set listen interval x 15 times as bmiss time */
2176 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2177 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2178 bmiss_time = ATH6KL_MAX_BMISS_TIME;
2179
2180 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2181 bmiss_time, 0);
2182 if (ret)
2183 return ret;
2184
2185 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2186 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2187 0, 0, 0, 0);
2188 if (ret)
2189 return ret;
2190 }
2191
2192 /* Setup own IP addr for ARP agent. */
2193 in_dev = __in_dev_get_rtnl(vif->ndev);
2194 if (!in_dev)
2195 return 0;
2196
2197 ifa = in_dev->ifa_list;
2198 memset(&ips, 0, sizeof(ips));
2199
2200 /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2201 while (index < MAX_IP_ADDRS && ifa) {
2202 ips[index] = ifa->ifa_local;
2203 ifa = ifa->ifa_next;
2204 index++;
2205 }
2206
2207 if (ifa) {
2208 ath6kl_err("total IP addr count is exceeding fw limit\n");
2209 return -EINVAL;
2210 }
2211
2212 ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2213 if (ret) {
2214 ath6kl_err("fail to setup ip for arp agent\n");
2215 return ret;
2216 }
2217
2218 return ret;
2219 }
2220
2221 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2222 {
2223 struct ath6kl_vif *first_vif, *vif;
2224 int ret = 0;
2225 u32 filter = 0;
2226 bool connected = false;
2227
2228 /* enter / leave wow suspend on first vif always */
2229 first_vif = ath6kl_vif_first(ar);
2230 if (WARN_ON(!first_vif) ||
2231 !ath6kl_cfg80211_ready(first_vif))
2232 return -EIO;
2233
2234 if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2235 return -EINVAL;
2236
2237 /* install filters for each connected vif */
2238 spin_lock_bh(&ar->list_lock);
2239 list_for_each_entry(vif, &ar->vif_list, list) {
2240 if (!test_bit(CONNECTED, &vif->flags) ||
2241 !ath6kl_cfg80211_ready(vif))
2242 continue;
2243 connected = true;
2244
2245 ret = ath6kl_wow_suspend_vif(vif, wow, &filter);
2246 if (ret)
2247 break;
2248 }
2249 spin_unlock_bh(&ar->list_lock);
2250
2251 if (!connected)
2252 return -ENOTCONN;
2253 else if (ret)
2254 return ret;
2255
2256 ar->state = ATH6KL_STATE_SUSPENDING;
2257
2258 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx,
2259 ATH6KL_WOW_MODE_ENABLE,
2260 filter,
2261 WOW_HOST_REQ_DELAY);
2262 if (ret)
2263 return ret;
2264
2265 return ath6kl_cfg80211_host_sleep(ar, first_vif);
2266 }
2267
2268 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif)
2269 {
2270 struct ath6kl *ar = vif->ar;
2271 int ret;
2272
2273 if (vif->nw_type != AP_NETWORK) {
2274 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2275 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2276 if (ret)
2277 return ret;
2278
2279 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2280 vif->listen_intvl_t, 0);
2281 if (ret)
2282 return ret;
2283
2284 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2285 vif->bmiss_time_t, 0);
2286 if (ret)
2287 return ret;
2288 }
2289
2290 if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2291 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2292 ar->fw_capabilities)) {
2293 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2294 vif->fw_vif_idx, true);
2295 if (ret)
2296 return ret;
2297 }
2298
2299 netif_wake_queue(vif->ndev);
2300
2301 return 0;
2302 }
2303
2304 static int ath6kl_wow_resume(struct ath6kl *ar)
2305 {
2306 struct ath6kl_vif *vif;
2307 int ret;
2308
2309 vif = ath6kl_vif_first(ar);
2310 if (WARN_ON(!vif) ||
2311 !ath6kl_cfg80211_ready(vif))
2312 return -EIO;
2313
2314 ar->state = ATH6KL_STATE_RESUMING;
2315
2316 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2317 ATH6KL_HOST_MODE_AWAKE);
2318 if (ret) {
2319 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2320 ret);
2321 goto cleanup;
2322 }
2323
2324 spin_lock_bh(&ar->list_lock);
2325 list_for_each_entry(vif, &ar->vif_list, list) {
2326 if (!test_bit(CONNECTED, &vif->flags) ||
2327 !ath6kl_cfg80211_ready(vif))
2328 continue;
2329 ret = ath6kl_wow_resume_vif(vif);
2330 if (ret)
2331 break;
2332 }
2333 spin_unlock_bh(&ar->list_lock);
2334
2335 if (ret)
2336 goto cleanup;
2337
2338 ar->state = ATH6KL_STATE_ON;
2339 return 0;
2340
2341 cleanup:
2342 ar->state = ATH6KL_STATE_WOW;
2343 return ret;
2344 }
2345
2346 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2347 {
2348 struct ath6kl_vif *vif;
2349 int ret;
2350
2351 vif = ath6kl_vif_first(ar);
2352 if (!vif)
2353 return -EIO;
2354
2355 if (!test_bit(WMI_READY, &ar->flag)) {
2356 ath6kl_err("deepsleep failed as wmi is not ready\n");
2357 return -EIO;
2358 }
2359
2360 ath6kl_cfg80211_stop_all(ar);
2361
2362 /* Save the current power mode before enabling power save */
2363 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2364
2365 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2366 if (ret)
2367 return ret;
2368
2369 /* Disable WOW mode */
2370 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2371 ATH6KL_WOW_MODE_DISABLE,
2372 0, 0);
2373 if (ret)
2374 return ret;
2375
2376 /* Flush all non control pkts in TX path */
2377 ath6kl_tx_data_cleanup(ar);
2378
2379 ret = ath6kl_cfg80211_host_sleep(ar, vif);
2380 if (ret)
2381 return ret;
2382
2383 return 0;
2384 }
2385
2386 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2387 {
2388 struct ath6kl_vif *vif;
2389 int ret;
2390
2391 vif = ath6kl_vif_first(ar);
2392
2393 if (!vif)
2394 return -EIO;
2395
2396 if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2397 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2398 ar->wmi->saved_pwr_mode);
2399 if (ret)
2400 return ret;
2401 }
2402
2403 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2404 ATH6KL_HOST_MODE_AWAKE);
2405 if (ret)
2406 return ret;
2407
2408 ar->state = ATH6KL_STATE_ON;
2409
2410 /* Reset scan parameter to default values */
2411 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2412 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2413 if (ret)
2414 return ret;
2415
2416 return 0;
2417 }
2418
2419 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2420 enum ath6kl_cfg_suspend_mode mode,
2421 struct cfg80211_wowlan *wow)
2422 {
2423 struct ath6kl_vif *vif;
2424 enum ath6kl_state prev_state;
2425 int ret;
2426
2427 switch (mode) {
2428 case ATH6KL_CFG_SUSPEND_WOW:
2429
2430 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2431
2432 /* Flush all non control pkts in TX path */
2433 ath6kl_tx_data_cleanup(ar);
2434
2435 prev_state = ar->state;
2436
2437 ret = ath6kl_wow_suspend(ar, wow);
2438 if (ret) {
2439 ar->state = prev_state;
2440 return ret;
2441 }
2442
2443 ar->state = ATH6KL_STATE_WOW;
2444 break;
2445
2446 case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2447
2448 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2449
2450 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2451 if (ret) {
2452 ath6kl_err("deepsleep suspend failed: %d\n", ret);
2453 return ret;
2454 }
2455
2456 ar->state = ATH6KL_STATE_DEEPSLEEP;
2457
2458 break;
2459
2460 case ATH6KL_CFG_SUSPEND_CUTPOWER:
2461
2462 ath6kl_cfg80211_stop_all(ar);
2463
2464 if (ar->state == ATH6KL_STATE_OFF) {
2465 ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2466 "suspend hw off, no action for cutpower\n");
2467 break;
2468 }
2469
2470 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2471
2472 ret = ath6kl_init_hw_stop(ar);
2473 if (ret) {
2474 ath6kl_warn("failed to stop hw during suspend: %d\n",
2475 ret);
2476 }
2477
2478 ar->state = ATH6KL_STATE_CUTPOWER;
2479
2480 break;
2481
2482 default:
2483 break;
2484 }
2485
2486 list_for_each_entry(vif, &ar->vif_list, list)
2487 ath6kl_cfg80211_scan_complete_event(vif, true);
2488
2489 return 0;
2490 }
2491 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2492
2493 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2494 {
2495 int ret;
2496
2497 switch (ar->state) {
2498 case ATH6KL_STATE_WOW:
2499 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2500
2501 ret = ath6kl_wow_resume(ar);
2502 if (ret) {
2503 ath6kl_warn("wow mode resume failed: %d\n", ret);
2504 return ret;
2505 }
2506
2507 break;
2508
2509 case ATH6KL_STATE_DEEPSLEEP:
2510 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2511
2512 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2513 if (ret) {
2514 ath6kl_warn("deep sleep resume failed: %d\n", ret);
2515 return ret;
2516 }
2517 break;
2518
2519 case ATH6KL_STATE_CUTPOWER:
2520 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2521
2522 ret = ath6kl_init_hw_start(ar);
2523 if (ret) {
2524 ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2525 return ret;
2526 }
2527 break;
2528
2529 default:
2530 break;
2531 }
2532
2533 return 0;
2534 }
2535 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2536
2537 #ifdef CONFIG_PM
2538
2539 /* hif layer decides what suspend mode to use */
2540 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2541 struct cfg80211_wowlan *wow)
2542 {
2543 struct ath6kl *ar = wiphy_priv(wiphy);
2544
2545 ath6kl_recovery_suspend(ar);
2546
2547 return ath6kl_hif_suspend(ar, wow);
2548 }
2549
2550 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2551 {
2552 struct ath6kl *ar = wiphy_priv(wiphy);
2553 int err;
2554
2555 err = ath6kl_hif_resume(ar);
2556 if (err)
2557 return err;
2558
2559 ath6kl_recovery_resume(ar);
2560
2561 return 0;
2562 }
2563
2564 /*
2565 * FIXME: WOW suspend mode is selected if the host sdio controller supports
2566 * both sdio irq wake up and keep power. The target pulls sdio data line to
2567 * wake up the host when WOW pattern matches. This causes sdio irq handler
2568 * is being called in the host side which internally hits ath6kl's RX path.
2569 *
2570 * Since sdio interrupt is not disabled, RX path executes even before
2571 * the host executes the actual resume operation from PM module.
2572 *
2573 * In the current scenario, WOW resume should happen before start processing
2574 * any data from the target. So It's required to perform WOW resume in RX path.
2575 * Ideally we should perform WOW resume only in the actual platform
2576 * resume path. This area needs bit rework to avoid WOW resume in RX path.
2577 *
2578 * ath6kl_check_wow_status() is called from ath6kl_rx().
2579 */
2580 void ath6kl_check_wow_status(struct ath6kl *ar)
2581 {
2582 if (ar->state == ATH6KL_STATE_SUSPENDING)
2583 return;
2584
2585 if (ar->state == ATH6KL_STATE_WOW)
2586 ath6kl_cfg80211_resume(ar);
2587 }
2588
2589 #else
2590
2591 void ath6kl_check_wow_status(struct ath6kl *ar)
2592 {
2593 }
2594 #endif
2595
2596 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum nl80211_band band,
2597 bool ht_enable)
2598 {
2599 struct ath6kl_htcap *htcap = &vif->htcap[band];
2600
2601 if (htcap->ht_enable == ht_enable)
2602 return 0;
2603
2604 if (ht_enable) {
2605 /* Set default ht capabilities */
2606 htcap->ht_enable = true;
2607 htcap->cap_info = (band == NL80211_BAND_2GHZ) ?
2608 ath6kl_g_htcap : ath6kl_a_htcap;
2609 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2610 } else /* Disable ht */
2611 memset(htcap, 0, sizeof(*htcap));
2612
2613 return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2614 band, htcap);
2615 }
2616
2617 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2618 {
2619 struct wiphy *wiphy = vif->ar->wiphy;
2620 int band, ret = 0;
2621
2622 for (band = 0; band < NUM_NL80211_BANDS; band++) {
2623 if (!wiphy->bands[band])
2624 continue;
2625
2626 ret = ath6kl_set_htcap(vif, band,
2627 wiphy->bands[band]->ht_cap.ht_supported);
2628 if (ret)
2629 return ret;
2630 }
2631
2632 return ret;
2633 }
2634
2635 static bool ath6kl_is_p2p_ie(const u8 *pos)
2636 {
2637 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2638 pos[2] == 0x50 && pos[3] == 0x6f &&
2639 pos[4] == 0x9a && pos[5] == 0x09;
2640 }
2641
2642 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2643 const u8 *ies, size_t ies_len)
2644 {
2645 struct ath6kl *ar = vif->ar;
2646 const u8 *pos;
2647 u8 *buf = NULL;
2648 size_t len = 0;
2649 int ret;
2650
2651 /*
2652 * Filter out P2P IE(s) since they will be included depending on
2653 * the Probe Request frame in ath6kl_send_go_probe_resp().
2654 */
2655
2656 if (ies && ies_len) {
2657 buf = kmalloc(ies_len, GFP_KERNEL);
2658 if (buf == NULL)
2659 return -ENOMEM;
2660 pos = ies;
2661 while (pos + 1 < ies + ies_len) {
2662 if (pos + 2 + pos[1] > ies + ies_len)
2663 break;
2664 if (!ath6kl_is_p2p_ie(pos)) {
2665 memcpy(buf + len, pos, 2 + pos[1]);
2666 len += 2 + pos[1];
2667 }
2668 pos += 2 + pos[1];
2669 }
2670 }
2671
2672 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2673 WMI_FRAME_PROBE_RESP, buf, len);
2674 kfree(buf);
2675 return ret;
2676 }
2677
2678 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2679 struct cfg80211_beacon_data *info)
2680 {
2681 struct ath6kl *ar = vif->ar;
2682 int res;
2683
2684 /* this also clears IE in fw if it's not set */
2685 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2686 WMI_FRAME_BEACON,
2687 info->beacon_ies,
2688 info->beacon_ies_len);
2689 if (res)
2690 return res;
2691
2692 /* this also clears IE in fw if it's not set */
2693 res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2694 info->proberesp_ies_len);
2695 if (res)
2696 return res;
2697
2698 /* this also clears IE in fw if it's not set */
2699 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2700 WMI_FRAME_ASSOC_RESP,
2701 info->assocresp_ies,
2702 info->assocresp_ies_len);
2703 if (res)
2704 return res;
2705
2706 return 0;
2707 }
2708
2709 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2710 u8 *rsn_capab)
2711 {
2712 const u8 *rsn_ie;
2713 size_t rsn_ie_len;
2714 u16 cnt;
2715
2716 if (!beacon->tail)
2717 return -EINVAL;
2718
2719 rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2720 if (!rsn_ie)
2721 return -EINVAL;
2722
2723 rsn_ie_len = *(rsn_ie + 1);
2724 /* skip element id and length */
2725 rsn_ie += 2;
2726
2727 /* skip version */
2728 if (rsn_ie_len < 2)
2729 return -EINVAL;
2730 rsn_ie += 2;
2731 rsn_ie_len -= 2;
2732
2733 /* skip group cipher suite */
2734 if (rsn_ie_len < 4)
2735 return 0;
2736 rsn_ie += 4;
2737 rsn_ie_len -= 4;
2738
2739 /* skip pairwise cipher suite */
2740 if (rsn_ie_len < 2)
2741 return 0;
2742 cnt = get_unaligned_le16(rsn_ie);
2743 rsn_ie += (2 + cnt * 4);
2744 rsn_ie_len -= (2 + cnt * 4);
2745
2746 /* skip akm suite */
2747 if (rsn_ie_len < 2)
2748 return 0;
2749 cnt = get_unaligned_le16(rsn_ie);
2750 rsn_ie += (2 + cnt * 4);
2751 rsn_ie_len -= (2 + cnt * 4);
2752
2753 if (rsn_ie_len < 2)
2754 return 0;
2755
2756 memcpy(rsn_capab, rsn_ie, 2);
2757
2758 return 0;
2759 }
2760
2761 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2762 struct cfg80211_ap_settings *info)
2763 {
2764 struct ath6kl *ar = ath6kl_priv(dev);
2765 struct ath6kl_vif *vif = netdev_priv(dev);
2766 struct ieee80211_mgmt *mgmt;
2767 bool hidden = false;
2768 u8 *ies;
2769 int ies_len;
2770 struct wmi_connect_cmd p;
2771 int res;
2772 int i, ret;
2773 u16 rsn_capab = 0;
2774 int inactivity_timeout = 0;
2775
2776 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2777
2778 if (!ath6kl_cfg80211_ready(vif))
2779 return -EIO;
2780
2781 if (vif->next_mode != AP_NETWORK)
2782 return -EOPNOTSUPP;
2783
2784 res = ath6kl_set_ies(vif, &info->beacon);
2785
2786 ar->ap_mode_bkey.valid = false;
2787
2788 ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx,
2789 info->beacon_interval);
2790
2791 if (ret)
2792 ath6kl_warn("Failed to set beacon interval: %d\n", ret);
2793
2794 ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2795 info->dtim_period);
2796
2797 /* ignore error, just print a warning and continue normally */
2798 if (ret)
2799 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2800
2801 if (info->beacon.head == NULL)
2802 return -EINVAL;
2803 mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2804 ies = mgmt->u.beacon.variable;
2805 if (ies > info->beacon.head + info->beacon.head_len)
2806 return -EINVAL;
2807 ies_len = info->beacon.head + info->beacon.head_len - ies;
2808
2809 if (info->ssid == NULL)
2810 return -EINVAL;
2811 memcpy(vif->ssid, info->ssid, info->ssid_len);
2812 vif->ssid_len = info->ssid_len;
2813 if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2814 hidden = true;
2815
2816 res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2817 if (res)
2818 return res;
2819
2820 ret = ath6kl_set_auth_type(vif, info->auth_type);
2821 if (ret)
2822 return ret;
2823
2824 memset(&p, 0, sizeof(p));
2825
2826 for (i = 0; i < info->crypto.n_akm_suites; i++) {
2827 switch (info->crypto.akm_suites[i]) {
2828 case WLAN_AKM_SUITE_8021X:
2829 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2830 p.auth_mode |= WPA_AUTH;
2831 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2832 p.auth_mode |= WPA2_AUTH;
2833 break;
2834 case WLAN_AKM_SUITE_PSK:
2835 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2836 p.auth_mode |= WPA_PSK_AUTH;
2837 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2838 p.auth_mode |= WPA2_PSK_AUTH;
2839 break;
2840 }
2841 }
2842 if (p.auth_mode == 0)
2843 p.auth_mode = NONE_AUTH;
2844 vif->auth_mode = p.auth_mode;
2845
2846 for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2847 switch (info->crypto.ciphers_pairwise[i]) {
2848 case WLAN_CIPHER_SUITE_WEP40:
2849 case WLAN_CIPHER_SUITE_WEP104:
2850 p.prwise_crypto_type |= WEP_CRYPT;
2851 break;
2852 case WLAN_CIPHER_SUITE_TKIP:
2853 p.prwise_crypto_type |= TKIP_CRYPT;
2854 break;
2855 case WLAN_CIPHER_SUITE_CCMP:
2856 p.prwise_crypto_type |= AES_CRYPT;
2857 break;
2858 case WLAN_CIPHER_SUITE_SMS4:
2859 p.prwise_crypto_type |= WAPI_CRYPT;
2860 break;
2861 }
2862 }
2863 if (p.prwise_crypto_type == 0) {
2864 p.prwise_crypto_type = NONE_CRYPT;
2865 ath6kl_set_cipher(vif, 0, true);
2866 } else if (info->crypto.n_ciphers_pairwise == 1) {
2867 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2868 }
2869
2870 switch (info->crypto.cipher_group) {
2871 case WLAN_CIPHER_SUITE_WEP40:
2872 case WLAN_CIPHER_SUITE_WEP104:
2873 p.grp_crypto_type = WEP_CRYPT;
2874 break;
2875 case WLAN_CIPHER_SUITE_TKIP:
2876 p.grp_crypto_type = TKIP_CRYPT;
2877 break;
2878 case WLAN_CIPHER_SUITE_CCMP:
2879 p.grp_crypto_type = AES_CRYPT;
2880 break;
2881 case WLAN_CIPHER_SUITE_SMS4:
2882 p.grp_crypto_type = WAPI_CRYPT;
2883 break;
2884 default:
2885 p.grp_crypto_type = NONE_CRYPT;
2886 break;
2887 }
2888 ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2889
2890 p.nw_type = AP_NETWORK;
2891 vif->nw_type = vif->next_mode;
2892
2893 p.ssid_len = vif->ssid_len;
2894 memcpy(p.ssid, vif->ssid, vif->ssid_len);
2895 p.dot11_auth_mode = vif->dot11_auth_mode;
2896 p.ch = cpu_to_le16(info->chandef.chan->center_freq);
2897
2898 /* Enable uAPSD support by default */
2899 res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2900 if (res < 0)
2901 return res;
2902
2903 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2904 p.nw_subtype = SUBTYPE_P2PGO;
2905 } else {
2906 /*
2907 * Due to firmware limitation, it is not possible to
2908 * do P2P mgmt operations in AP mode
2909 */
2910 p.nw_subtype = SUBTYPE_NONE;
2911 }
2912
2913 if (info->inactivity_timeout) {
2914 inactivity_timeout = info->inactivity_timeout;
2915
2916 if (test_bit(ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS,
2917 ar->fw_capabilities))
2918 inactivity_timeout = DIV_ROUND_UP(inactivity_timeout,
2919 60);
2920
2921 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2922 inactivity_timeout);
2923 if (res < 0)
2924 return res;
2925 }
2926
2927 if (ath6kl_set_htcap(vif, info->chandef.chan->band,
2928 cfg80211_get_chandef_type(&info->chandef)
2929 != NL80211_CHAN_NO_HT))
2930 return -EIO;
2931
2932 /*
2933 * Get the PTKSA replay counter in the RSN IE. Supplicant
2934 * will use the RSN IE in M3 message and firmware has to
2935 * advertise the same in beacon/probe response. Send
2936 * the complete RSN IE capability field to firmware
2937 */
2938 if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2939 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2940 ar->fw_capabilities)) {
2941 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2942 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2943 (const u8 *) &rsn_capab,
2944 sizeof(rsn_capab));
2945 vif->rsn_capab = rsn_capab;
2946 if (res < 0)
2947 return res;
2948 }
2949
2950 memcpy(&vif->profile, &p, sizeof(p));
2951 res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2952 if (res < 0)
2953 return res;
2954
2955 return 0;
2956 }
2957
2958 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2959 struct cfg80211_beacon_data *beacon)
2960 {
2961 struct ath6kl_vif *vif = netdev_priv(dev);
2962
2963 if (!ath6kl_cfg80211_ready(vif))
2964 return -EIO;
2965
2966 if (vif->next_mode != AP_NETWORK)
2967 return -EOPNOTSUPP;
2968
2969 return ath6kl_set_ies(vif, beacon);
2970 }
2971
2972 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2973 {
2974 struct ath6kl *ar = ath6kl_priv(dev);
2975 struct ath6kl_vif *vif = netdev_priv(dev);
2976
2977 if (vif->nw_type != AP_NETWORK)
2978 return -EOPNOTSUPP;
2979 if (!test_bit(CONNECTED, &vif->flags))
2980 return -ENOTCONN;
2981
2982 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2983 clear_bit(CONNECTED, &vif->flags);
2984 netif_carrier_off(vif->ndev);
2985
2986 /* Restore ht setting in firmware */
2987 return ath6kl_restore_htcap(vif);
2988 }
2989
2990 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2991
2992 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2993 struct station_del_parameters *params)
2994 {
2995 struct ath6kl *ar = ath6kl_priv(dev);
2996 struct ath6kl_vif *vif = netdev_priv(dev);
2997 const u8 *addr = params->mac ? params->mac : bcast_addr;
2998
2999 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
3000 addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
3001 }
3002
3003 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
3004 const u8 *mac,
3005 struct station_parameters *params)
3006 {
3007 struct ath6kl *ar = ath6kl_priv(dev);
3008 struct ath6kl_vif *vif = netdev_priv(dev);
3009 int err;
3010
3011 if (vif->nw_type != AP_NETWORK)
3012 return -EOPNOTSUPP;
3013
3014 err = cfg80211_check_station_change(wiphy, params,
3015 CFG80211_STA_AP_MLME_CLIENT);
3016 if (err)
3017 return err;
3018
3019 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
3020 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3021 WMI_AP_MLME_AUTHORIZE, mac, 0);
3022 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3023 WMI_AP_MLME_UNAUTHORIZE, mac, 0);
3024 }
3025
3026 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
3027 struct wireless_dev *wdev,
3028 struct ieee80211_channel *chan,
3029 unsigned int duration,
3030 u64 *cookie)
3031 {
3032 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3033 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3034 u32 id;
3035
3036 /* TODO: if already pending or ongoing remain-on-channel,
3037 * return -EBUSY */
3038 id = ++vif->last_roc_id;
3039 if (id == 0) {
3040 /* Do not use 0 as the cookie value */
3041 id = ++vif->last_roc_id;
3042 }
3043 *cookie = id;
3044
3045 return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
3046 chan->center_freq, duration);
3047 }
3048
3049 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3050 struct wireless_dev *wdev,
3051 u64 cookie)
3052 {
3053 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3054 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3055
3056 if (cookie != vif->last_roc_id)
3057 return -ENOENT;
3058 vif->last_cancel_roc_id = cookie;
3059
3060 return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3061 }
3062
3063 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3064 const u8 *buf, size_t len,
3065 unsigned int freq)
3066 {
3067 struct ath6kl *ar = vif->ar;
3068 const u8 *pos;
3069 u8 *p2p;
3070 int p2p_len;
3071 int ret;
3072 const struct ieee80211_mgmt *mgmt;
3073
3074 mgmt = (const struct ieee80211_mgmt *) buf;
3075
3076 /* Include P2P IE(s) from the frame generated in user space. */
3077
3078 p2p = kmalloc(len, GFP_KERNEL);
3079 if (p2p == NULL)
3080 return -ENOMEM;
3081 p2p_len = 0;
3082
3083 pos = mgmt->u.probe_resp.variable;
3084 while (pos + 1 < buf + len) {
3085 if (pos + 2 + pos[1] > buf + len)
3086 break;
3087 if (ath6kl_is_p2p_ie(pos)) {
3088 memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3089 p2p_len += 2 + pos[1];
3090 }
3091 pos += 2 + pos[1];
3092 }
3093
3094 ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
3095 mgmt->da, p2p, p2p_len);
3096 kfree(p2p);
3097 return ret;
3098 }
3099
3100 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
3101 u32 id,
3102 u32 freq,
3103 u32 wait,
3104 const u8 *buf,
3105 size_t len,
3106 bool *more_data,
3107 bool no_cck)
3108 {
3109 struct ieee80211_mgmt *mgmt;
3110 struct ath6kl_sta *conn;
3111 bool is_psq_empty = false;
3112 struct ath6kl_mgmt_buff *mgmt_buf;
3113 size_t mgmt_buf_size;
3114 struct ath6kl *ar = vif->ar;
3115
3116 mgmt = (struct ieee80211_mgmt *) buf;
3117 if (is_multicast_ether_addr(mgmt->da))
3118 return false;
3119
3120 conn = ath6kl_find_sta(vif, mgmt->da);
3121 if (!conn)
3122 return false;
3123
3124 if (conn->sta_flags & STA_PS_SLEEP) {
3125 if (!(conn->sta_flags & STA_PS_POLLED)) {
3126 /* Queue the frames if the STA is sleeping */
3127 mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3128 mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3129 if (!mgmt_buf)
3130 return false;
3131
3132 INIT_LIST_HEAD(&mgmt_buf->list);
3133 mgmt_buf->id = id;
3134 mgmt_buf->freq = freq;
3135 mgmt_buf->wait = wait;
3136 mgmt_buf->len = len;
3137 mgmt_buf->no_cck = no_cck;
3138 memcpy(mgmt_buf->buf, buf, len);
3139 spin_lock_bh(&conn->psq_lock);
3140 is_psq_empty = skb_queue_empty(&conn->psq) &&
3141 (conn->mgmt_psq_len == 0);
3142 list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3143 conn->mgmt_psq_len++;
3144 spin_unlock_bh(&conn->psq_lock);
3145
3146 /*
3147 * If this is the first pkt getting queued
3148 * for this STA, update the PVB for this
3149 * STA.
3150 */
3151 if (is_psq_empty)
3152 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3153 conn->aid, 1);
3154 return true;
3155 }
3156
3157 /*
3158 * This tx is because of a PsPoll.
3159 * Determine if MoreData bit has to be set.
3160 */
3161 spin_lock_bh(&conn->psq_lock);
3162 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3163 *more_data = true;
3164 spin_unlock_bh(&conn->psq_lock);
3165 }
3166
3167 return false;
3168 }
3169
3170 /* Check if SSID length is greater than DIRECT- */
3171 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3172 {
3173 const struct ieee80211_mgmt *mgmt;
3174 mgmt = (const struct ieee80211_mgmt *) buf;
3175
3176 /* variable[1] contains the SSID tag length */
3177 if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3178 (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3179 return true;
3180 }
3181
3182 return false;
3183 }
3184
3185 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3186 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
3187 {
3188 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3189 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3190 struct ieee80211_channel *chan = params->chan;
3191 const u8 *buf = params->buf;
3192 size_t len = params->len;
3193 unsigned int wait = params->wait;
3194 bool no_cck = params->no_cck;
3195 u32 id, freq;
3196 const struct ieee80211_mgmt *mgmt;
3197 bool more_data, queued;
3198
3199 /* default to the current channel, but use the one specified as argument
3200 * if any
3201 */
3202 freq = vif->ch_hint;
3203 if (chan)
3204 freq = chan->center_freq;
3205
3206 /* never send freq zero to the firmware */
3207 if (WARN_ON(freq == 0))
3208 return -EINVAL;
3209
3210 mgmt = (const struct ieee80211_mgmt *) buf;
3211 if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3212 ieee80211_is_probe_resp(mgmt->frame_control) &&
3213 ath6kl_is_p2p_go_ssid(buf, len)) {
3214 /*
3215 * Send Probe Response frame in GO mode using a separate WMI
3216 * command to allow the target to fill in the generic IEs.
3217 */
3218 *cookie = 0; /* TX status not supported */
3219 return ath6kl_send_go_probe_resp(vif, buf, len, freq);
3220 }
3221
3222 id = vif->send_action_id++;
3223 if (id == 0) {
3224 /*
3225 * 0 is a reserved value in the WMI command and shall not be
3226 * used for the command.
3227 */
3228 id = vif->send_action_id++;
3229 }
3230
3231 *cookie = id;
3232
3233 /* AP mode Power saving processing */
3234 if (vif->nw_type == AP_NETWORK) {
3235 queued = ath6kl_mgmt_powersave_ap(vif, id, freq, wait, buf, len,
3236 &more_data, no_cck);
3237 if (queued)
3238 return 0;
3239 }
3240
3241 return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id, freq,
3242 wait, buf, len, no_cck);
3243 }
3244
3245 static int ath6kl_get_antenna(struct wiphy *wiphy,
3246 u32 *tx_ant, u32 *rx_ant)
3247 {
3248 struct ath6kl *ar = wiphy_priv(wiphy);
3249 *tx_ant = ar->hw.tx_ant;
3250 *rx_ant = ar->hw.rx_ant;
3251 return 0;
3252 }
3253
3254 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3255 struct wireless_dev *wdev,
3256 u16 frame_type, bool reg)
3257 {
3258 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3259
3260 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3261 __func__, frame_type, reg);
3262 if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3263 /*
3264 * Note: This notification callback is not allowed to sleep, so
3265 * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3266 * hardcode target to report Probe Request frames all the time.
3267 */
3268 vif->probe_req_report = reg;
3269 }
3270 }
3271
3272 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3273 struct net_device *dev,
3274 struct cfg80211_sched_scan_request *request)
3275 {
3276 struct ath6kl *ar = ath6kl_priv(dev);
3277 struct ath6kl_vif *vif = netdev_priv(dev);
3278 u16 interval;
3279 int ret, rssi_thold;
3280 int n_match_sets = request->n_match_sets;
3281
3282 /*
3283 * If there's a matchset w/o an SSID, then assume it's just for
3284 * the RSSI (nothing else is currently supported) and ignore it.
3285 * The device only supports a global RSSI filter that we set below.
3286 */
3287 if (n_match_sets == 1 && !request->match_sets[0].ssid.ssid_len)
3288 n_match_sets = 0;
3289
3290 if (ar->state != ATH6KL_STATE_ON)
3291 return -EIO;
3292
3293 if (vif->sme_state != SME_DISCONNECTED)
3294 return -EBUSY;
3295
3296 ath6kl_cfg80211_scan_complete_event(vif, true);
3297
3298 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3299 request->n_ssids,
3300 request->match_sets,
3301 n_match_sets);
3302 if (ret < 0)
3303 return ret;
3304
3305 if (!n_match_sets) {
3306 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3307 ALL_BSS_FILTER, 0);
3308 if (ret < 0)
3309 return ret;
3310 } else {
3311 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3312 MATCHED_SSID_FILTER, 0);
3313 if (ret < 0)
3314 return ret;
3315 }
3316
3317 if (test_bit(ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD,
3318 ar->fw_capabilities)) {
3319 if (request->min_rssi_thold <= NL80211_SCAN_RSSI_THOLD_OFF)
3320 rssi_thold = 0;
3321 else if (request->min_rssi_thold < -127)
3322 rssi_thold = -127;
3323 else
3324 rssi_thold = request->min_rssi_thold;
3325
3326 ret = ath6kl_wmi_set_rssi_filter_cmd(ar->wmi, vif->fw_vif_idx,
3327 rssi_thold);
3328 if (ret) {
3329 ath6kl_err("failed to set RSSI threshold for scan\n");
3330 return ret;
3331 }
3332 }
3333
3334 /* fw uses seconds, also make sure that it's >0 */
3335 interval = max_t(u16, 1, request->scan_plans[0].interval);
3336
3337 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3338 interval, interval,
3339 vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3340
3341 /* this also clears IE in fw if it's not set */
3342 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3343 WMI_FRAME_PROBE_REQ,
3344 request->ie, request->ie_len);
3345 if (ret) {
3346 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n",
3347 ret);
3348 return ret;
3349 }
3350
3351 ret = ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, true);
3352 if (ret)
3353 return ret;
3354
3355 set_bit(SCHED_SCANNING, &vif->flags);
3356
3357 return 0;
3358 }
3359
3360 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3361 struct net_device *dev, u64 reqid)
3362 {
3363 struct ath6kl_vif *vif = netdev_priv(dev);
3364 bool stopped;
3365
3366 stopped = __ath6kl_cfg80211_sscan_stop(vif);
3367
3368 if (!stopped)
3369 return -EIO;
3370
3371 return 0;
3372 }
3373
3374 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy,
3375 struct net_device *dev,
3376 const u8 *addr,
3377 const struct cfg80211_bitrate_mask *mask)
3378 {
3379 struct ath6kl *ar = ath6kl_priv(dev);
3380 struct ath6kl_vif *vif = netdev_priv(dev);
3381
3382 return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx,
3383 mask);
3384 }
3385
3386 static int ath6kl_cfg80211_set_txe_config(struct wiphy *wiphy,
3387 struct net_device *dev,
3388 u32 rate, u32 pkts, u32 intvl)
3389 {
3390 struct ath6kl *ar = ath6kl_priv(dev);
3391 struct ath6kl_vif *vif = netdev_priv(dev);
3392
3393 if (vif->nw_type != INFRA_NETWORK ||
3394 !test_bit(ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, ar->fw_capabilities))
3395 return -EOPNOTSUPP;
3396
3397 if (vif->sme_state != SME_CONNECTED)
3398 return -ENOTCONN;
3399
3400 /* save this since the firmware won't report the interval */
3401 vif->txe_intvl = intvl;
3402
3403 return ath6kl_wmi_set_txe_notify(ar->wmi, vif->fw_vif_idx,
3404 rate, pkts, intvl);
3405 }
3406
3407 static const struct ieee80211_txrx_stypes
3408 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3409 [NL80211_IFTYPE_STATION] = {
3410 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3411 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3412 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3413 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3414 },
3415 [NL80211_IFTYPE_AP] = {
3416 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3417 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3418 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3419 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3420 },
3421 [NL80211_IFTYPE_P2P_CLIENT] = {
3422 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3423 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3424 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3425 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3426 },
3427 [NL80211_IFTYPE_P2P_GO] = {
3428 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3429 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3430 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3431 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3432 },
3433 };
3434
3435 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3436 .add_virtual_intf = ath6kl_cfg80211_add_iface,
3437 .del_virtual_intf = ath6kl_cfg80211_del_iface,
3438 .change_virtual_intf = ath6kl_cfg80211_change_iface,
3439 .scan = ath6kl_cfg80211_scan,
3440 .connect = ath6kl_cfg80211_connect,
3441 .disconnect = ath6kl_cfg80211_disconnect,
3442 .add_key = ath6kl_cfg80211_add_key,
3443 .get_key = ath6kl_cfg80211_get_key,
3444 .del_key = ath6kl_cfg80211_del_key,
3445 .set_default_key = ath6kl_cfg80211_set_default_key,
3446 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3447 .set_tx_power = ath6kl_cfg80211_set_txpower,
3448 .get_tx_power = ath6kl_cfg80211_get_txpower,
3449 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3450 .join_ibss = ath6kl_cfg80211_join_ibss,
3451 .leave_ibss = ath6kl_cfg80211_leave_ibss,
3452 .get_station = ath6kl_get_station,
3453 .set_pmksa = ath6kl_set_pmksa,
3454 .del_pmksa = ath6kl_del_pmksa,
3455 .flush_pmksa = ath6kl_flush_pmksa,
3456 CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3457 #ifdef CONFIG_PM
3458 .suspend = __ath6kl_cfg80211_suspend,
3459 .resume = __ath6kl_cfg80211_resume,
3460 #endif
3461 .start_ap = ath6kl_start_ap,
3462 .change_beacon = ath6kl_change_beacon,
3463 .stop_ap = ath6kl_stop_ap,
3464 .del_station = ath6kl_del_station,
3465 .change_station = ath6kl_change_station,
3466 .remain_on_channel = ath6kl_remain_on_channel,
3467 .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3468 .mgmt_tx = ath6kl_mgmt_tx,
3469 .mgmt_frame_register = ath6kl_mgmt_frame_register,
3470 .get_antenna = ath6kl_get_antenna,
3471 .sched_scan_start = ath6kl_cfg80211_sscan_start,
3472 .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3473 .set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
3474 .set_cqm_txe_config = ath6kl_cfg80211_set_txe_config,
3475 };
3476
3477 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3478 {
3479 ath6kl_cfg80211_sscan_disable(vif);
3480
3481 switch (vif->sme_state) {
3482 case SME_DISCONNECTED:
3483 break;
3484 case SME_CONNECTING:
3485 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3486 NULL, 0,
3487 WLAN_STATUS_UNSPECIFIED_FAILURE,
3488 GFP_KERNEL);
3489 break;
3490 case SME_CONNECTED:
3491 cfg80211_disconnected(vif->ndev, 0, NULL, 0, true, GFP_KERNEL);
3492 break;
3493 }
3494
3495 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3496 (test_bit(CONNECTED, &vif->flags) ||
3497 test_bit(CONNECT_PEND, &vif->flags)))
3498 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3499
3500 vif->sme_state = SME_DISCONNECTED;
3501 clear_bit(CONNECTED, &vif->flags);
3502 clear_bit(CONNECT_PEND, &vif->flags);
3503
3504 /* Stop netdev queues, needed during recovery */
3505 netif_stop_queue(vif->ndev);
3506 netif_carrier_off(vif->ndev);
3507
3508 /* disable scanning */
3509 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3510 ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3511 0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3512 ath6kl_warn("failed to disable scan during stop\n");
3513
3514 ath6kl_cfg80211_scan_complete_event(vif, true);
3515 }
3516
3517 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3518 {
3519 struct ath6kl_vif *vif;
3520
3521 vif = ath6kl_vif_first(ar);
3522 if (!vif && ar->state != ATH6KL_STATE_RECOVERY) {
3523 /* save the current power mode before enabling power save */
3524 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3525
3526 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3527 ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3528 return;
3529 }
3530
3531 /*
3532 * FIXME: we should take ar->list_lock to protect changes in the
3533 * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3534 * sleeps.
3535 */
3536 list_for_each_entry(vif, &ar->vif_list, list)
3537 ath6kl_cfg80211_stop(vif);
3538 }
3539
3540 static void ath6kl_cfg80211_reg_notify(struct wiphy *wiphy,
3541 struct regulatory_request *request)
3542 {
3543 struct ath6kl *ar = wiphy_priv(wiphy);
3544 u32 rates[NUM_NL80211_BANDS];
3545 int ret, i;
3546
3547 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
3548 "cfg reg_notify %c%c%s%s initiator %d hint_type %d\n",
3549 request->alpha2[0], request->alpha2[1],
3550 request->intersect ? " intersect" : "",
3551 request->processed ? " processed" : "",
3552 request->initiator, request->user_reg_hint_type);
3553
3554 if (request->user_reg_hint_type != NL80211_USER_REG_HINT_CELL_BASE)
3555 return;
3556
3557 ret = ath6kl_wmi_set_regdomain_cmd(ar->wmi, request->alpha2);
3558 if (ret) {
3559 ath6kl_err("failed to set regdomain: %d\n", ret);
3560 return;
3561 }
3562
3563 /*
3564 * Firmware will apply the regdomain change only after a scan is
3565 * issued and it will send a WMI_REGDOMAIN_EVENTID when it has been
3566 * changed.
3567 */
3568
3569 for (i = 0; i < NUM_NL80211_BANDS; i++)
3570 if (wiphy->bands[i])
3571 rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
3572
3573
3574 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, 0, WMI_LONG_SCAN, false,
3575 false, 0, ATH6KL_FG_SCAN_INTERVAL,
3576 0, NULL, false, rates);
3577 if (ret) {
3578 ath6kl_err("failed to start scan for a regdomain change: %d\n",
3579 ret);
3580 return;
3581 }
3582 }
3583
3584 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3585 {
3586 vif->aggr_cntxt = aggr_init(vif);
3587 if (!vif->aggr_cntxt) {
3588 ath6kl_err("failed to initialize aggr\n");
3589 return -ENOMEM;
3590 }
3591
3592 setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3593 (unsigned long) vif->ndev);
3594 setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3595 (unsigned long) vif);
3596
3597 set_bit(WMM_ENABLED, &vif->flags);
3598 spin_lock_init(&vif->if_lock);
3599
3600 INIT_LIST_HEAD(&vif->mc_filter);
3601
3602 return 0;
3603 }
3604
3605 void ath6kl_cfg80211_vif_stop(struct ath6kl_vif *vif, bool wmi_ready)
3606 {
3607 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
3608 bool discon_issued;
3609
3610 netif_stop_queue(vif->ndev);
3611
3612 clear_bit(WLAN_ENABLED, &vif->flags);
3613
3614 if (wmi_ready) {
3615 discon_issued = test_bit(CONNECTED, &vif->flags) ||
3616 test_bit(CONNECT_PEND, &vif->flags);
3617 ath6kl_disconnect(vif);
3618 del_timer(&vif->disconnect_timer);
3619
3620 if (discon_issued)
3621 ath6kl_disconnect_event(vif, DISCONNECT_CMD,
3622 (vif->nw_type & AP_NETWORK) ?
3623 bcast_mac : vif->bssid,
3624 0, NULL, 0);
3625 }
3626
3627 if (vif->scan_req) {
3628 struct cfg80211_scan_info info = {
3629 .aborted = true,
3630 };
3631
3632 cfg80211_scan_done(vif->scan_req, &info);
3633 vif->scan_req = NULL;
3634 }
3635
3636 /* need to clean up enhanced bmiss detection fw state */
3637 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
3638 }
3639
3640 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3641 {
3642 struct ath6kl *ar = vif->ar;
3643 struct ath6kl_mc_filter *mc_filter, *tmp;
3644
3645 aggr_module_destroy(vif->aggr_cntxt);
3646
3647 ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3648
3649 if (vif->nw_type == ADHOC_NETWORK)
3650 ar->ibss_if_active = false;
3651
3652 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3653 list_del(&mc_filter->list);
3654 kfree(mc_filter);
3655 }
3656
3657 unregister_netdevice(vif->ndev);
3658
3659 ar->num_vif--;
3660 }
3661
3662 static const char ath6kl_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
3663 /* Common stats names used by many drivers. */
3664 "tx_pkts_nic", "tx_bytes_nic", "rx_pkts_nic", "rx_bytes_nic",
3665
3666 /* TX stats. */
3667 "d_tx_ucast_pkts", "d_tx_bcast_pkts",
3668 "d_tx_ucast_bytes", "d_tx_bcast_bytes",
3669 "d_tx_rts_ok", "d_tx_error", "d_tx_fail",
3670 "d_tx_retry", "d_tx_multi_retry", "d_tx_rts_fail",
3671 "d_tx_tkip_counter_measures",
3672
3673 /* RX Stats. */
3674 "d_rx_ucast_pkts", "d_rx_ucast_rate", "d_rx_bcast_pkts",
3675 "d_rx_ucast_bytes", "d_rx_bcast_bytes", "d_rx_frag_pkt",
3676 "d_rx_error", "d_rx_crc_err", "d_rx_keycache_miss",
3677 "d_rx_decrypt_crc_err", "d_rx_duplicate_frames",
3678 "d_rx_mic_err", "d_rx_tkip_format_err", "d_rx_ccmp_format_err",
3679 "d_rx_ccmp_replay_err",
3680
3681 /* Misc stats. */
3682 "d_beacon_miss", "d_num_connects", "d_num_disconnects",
3683 "d_beacon_avg_rssi", "d_arp_received", "d_arp_matched",
3684 "d_arp_replied"
3685 };
3686
3687 #define ATH6KL_STATS_LEN ARRAY_SIZE(ath6kl_gstrings_sta_stats)
3688
3689 static int ath6kl_get_sset_count(struct net_device *dev, int sset)
3690 {
3691 int rv = 0;
3692
3693 if (sset == ETH_SS_STATS)
3694 rv += ATH6KL_STATS_LEN;
3695
3696 if (rv == 0)
3697 return -EOPNOTSUPP;
3698 return rv;
3699 }
3700
3701 static void ath6kl_get_stats(struct net_device *dev,
3702 struct ethtool_stats *stats,
3703 u64 *data)
3704 {
3705 struct ath6kl_vif *vif = netdev_priv(dev);
3706 struct ath6kl *ar = vif->ar;
3707 int i = 0;
3708 struct target_stats *tgt_stats;
3709
3710 memset(data, 0, sizeof(u64) * ATH6KL_STATS_LEN);
3711
3712 ath6kl_read_tgt_stats(ar, vif);
3713
3714 tgt_stats = &vif->target_stats;
3715
3716 data[i++] = tgt_stats->tx_ucast_pkt + tgt_stats->tx_bcast_pkt;
3717 data[i++] = tgt_stats->tx_ucast_byte + tgt_stats->tx_bcast_byte;
3718 data[i++] = tgt_stats->rx_ucast_pkt + tgt_stats->rx_bcast_pkt;
3719 data[i++] = tgt_stats->rx_ucast_byte + tgt_stats->rx_bcast_byte;
3720
3721 data[i++] = tgt_stats->tx_ucast_pkt;
3722 data[i++] = tgt_stats->tx_bcast_pkt;
3723 data[i++] = tgt_stats->tx_ucast_byte;
3724 data[i++] = tgt_stats->tx_bcast_byte;
3725 data[i++] = tgt_stats->tx_rts_success_cnt;
3726 data[i++] = tgt_stats->tx_err;
3727 data[i++] = tgt_stats->tx_fail_cnt;
3728 data[i++] = tgt_stats->tx_retry_cnt;
3729 data[i++] = tgt_stats->tx_mult_retry_cnt;
3730 data[i++] = tgt_stats->tx_rts_fail_cnt;
3731 data[i++] = tgt_stats->tkip_cnter_measures_invoked;
3732
3733 data[i++] = tgt_stats->rx_ucast_pkt;
3734 data[i++] = tgt_stats->rx_ucast_rate;
3735 data[i++] = tgt_stats->rx_bcast_pkt;
3736 data[i++] = tgt_stats->rx_ucast_byte;
3737 data[i++] = tgt_stats->rx_bcast_byte;
3738 data[i++] = tgt_stats->rx_frgment_pkt;
3739 data[i++] = tgt_stats->rx_err;
3740 data[i++] = tgt_stats->rx_crc_err;
3741 data[i++] = tgt_stats->rx_key_cache_miss;
3742 data[i++] = tgt_stats->rx_decrypt_err;
3743 data[i++] = tgt_stats->rx_dupl_frame;
3744 data[i++] = tgt_stats->tkip_local_mic_fail;
3745 data[i++] = tgt_stats->tkip_fmt_err;
3746 data[i++] = tgt_stats->ccmp_fmt_err;
3747 data[i++] = tgt_stats->ccmp_replays;
3748
3749 data[i++] = tgt_stats->cs_bmiss_cnt;
3750 data[i++] = tgt_stats->cs_connect_cnt;
3751 data[i++] = tgt_stats->cs_discon_cnt;
3752 data[i++] = tgt_stats->cs_ave_beacon_rssi;
3753 data[i++] = tgt_stats->arp_received;
3754 data[i++] = tgt_stats->arp_matched;
3755 data[i++] = tgt_stats->arp_replied;
3756
3757 if (i != ATH6KL_STATS_LEN) {
3758 WARN_ON_ONCE(1);
3759 ath6kl_err("ethtool stats error, i: %d STATS_LEN: %d\n",
3760 i, (int)ATH6KL_STATS_LEN);
3761 }
3762 }
3763
3764 /* These stats are per NIC, not really per vdev, so we just ignore dev. */
3765 static void ath6kl_get_strings(struct net_device *dev, u32 sset, u8 *data)
3766 {
3767 int sz_sta_stats = 0;
3768
3769 if (sset == ETH_SS_STATS) {
3770 sz_sta_stats = sizeof(ath6kl_gstrings_sta_stats);
3771 memcpy(data, ath6kl_gstrings_sta_stats, sz_sta_stats);
3772 }
3773 }
3774
3775 static const struct ethtool_ops ath6kl_ethtool_ops = {
3776 .get_drvinfo = cfg80211_get_drvinfo,
3777 .get_link = ethtool_op_get_link,
3778 .get_strings = ath6kl_get_strings,
3779 .get_ethtool_stats = ath6kl_get_stats,
3780 .get_sset_count = ath6kl_get_sset_count,
3781 };
3782
3783 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
3784 unsigned char name_assign_type,
3785 enum nl80211_iftype type,
3786 u8 fw_vif_idx, u8 nw_type)
3787 {
3788 struct net_device *ndev;
3789 struct ath6kl_vif *vif;
3790
3791 ndev = alloc_netdev(sizeof(*vif), name, name_assign_type, ether_setup);
3792 if (!ndev)
3793 return NULL;
3794
3795 vif = netdev_priv(ndev);
3796 ndev->ieee80211_ptr = &vif->wdev;
3797 vif->wdev.wiphy = ar->wiphy;
3798 vif->ar = ar;
3799 vif->ndev = ndev;
3800 SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3801 vif->wdev.netdev = ndev;
3802 vif->wdev.iftype = type;
3803 vif->fw_vif_idx = fw_vif_idx;
3804 vif->nw_type = nw_type;
3805 vif->next_mode = nw_type;
3806 vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3807 vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3808 vif->bg_scan_period = 0;
3809 vif->htcap[NL80211_BAND_2GHZ].ht_enable = true;
3810 vif->htcap[NL80211_BAND_5GHZ].ht_enable = true;
3811
3812 memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3813 if (fw_vif_idx != 0) {
3814 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3815 0x2;
3816 if (test_bit(ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR,
3817 ar->fw_capabilities))
3818 ndev->dev_addr[4] ^= 0x80;
3819 }
3820
3821 init_netdev(ndev);
3822
3823 ath6kl_init_control_info(vif);
3824
3825 if (ath6kl_cfg80211_vif_init(vif))
3826 goto err;
3827
3828 netdev_set_default_ethtool_ops(ndev, &ath6kl_ethtool_ops);
3829
3830 if (register_netdevice(ndev))
3831 goto err;
3832
3833 ar->avail_idx_map &= ~BIT(fw_vif_idx);
3834 vif->sme_state = SME_DISCONNECTED;
3835 set_bit(WLAN_ENABLED, &vif->flags);
3836 ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3837
3838 if (type == NL80211_IFTYPE_ADHOC)
3839 ar->ibss_if_active = true;
3840
3841 spin_lock_bh(&ar->list_lock);
3842 list_add_tail(&vif->list, &ar->vif_list);
3843 spin_unlock_bh(&ar->list_lock);
3844
3845 return &vif->wdev;
3846
3847 err:
3848 aggr_module_destroy(vif->aggr_cntxt);
3849 free_netdev(ndev);
3850 return NULL;
3851 }
3852
3853 #ifdef CONFIG_PM
3854 static const struct wiphy_wowlan_support ath6kl_wowlan_support = {
3855 .flags = WIPHY_WOWLAN_MAGIC_PKT |
3856 WIPHY_WOWLAN_DISCONNECT |
3857 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
3858 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
3859 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
3860 WIPHY_WOWLAN_4WAY_HANDSHAKE,
3861 .n_patterns = WOW_MAX_FILTERS_PER_LIST,
3862 .pattern_min_len = 1,
3863 .pattern_max_len = WOW_PATTERN_SIZE,
3864 };
3865 #endif
3866
3867 int ath6kl_cfg80211_init(struct ath6kl *ar)
3868 {
3869 struct wiphy *wiphy = ar->wiphy;
3870 bool band_2gig = false, band_5gig = false, ht = false;
3871 int ret;
3872
3873 wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3874
3875 wiphy->max_remain_on_channel_duration = 5000;
3876
3877 /* set device pointer for wiphy */
3878 set_wiphy_dev(wiphy, ar->dev);
3879
3880 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3881 BIT(NL80211_IFTYPE_ADHOC) |
3882 BIT(NL80211_IFTYPE_AP);
3883 if (ar->p2p) {
3884 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3885 BIT(NL80211_IFTYPE_P2P_CLIENT);
3886 }
3887
3888 if (IS_ENABLED(CONFIG_ATH6KL_REGDOMAIN) &&
3889 test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) {
3890 wiphy->reg_notifier = ath6kl_cfg80211_reg_notify;
3891 ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS;
3892 }
3893
3894 /* max num of ssids that can be probed during scanning */
3895 wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3896
3897 /* max num of ssids that can be matched after scan */
3898 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST,
3899 ar->fw_capabilities))
3900 wiphy->max_match_sets = MAX_PROBED_SSIDS;
3901
3902 wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3903 switch (ar->hw.cap) {
3904 case WMI_11AN_CAP:
3905 ht = true;
3906 case WMI_11A_CAP:
3907 band_5gig = true;
3908 break;
3909 case WMI_11GN_CAP:
3910 ht = true;
3911 case WMI_11G_CAP:
3912 band_2gig = true;
3913 break;
3914 case WMI_11AGN_CAP:
3915 ht = true;
3916 case WMI_11AG_CAP:
3917 band_2gig = true;
3918 band_5gig = true;
3919 break;
3920 default:
3921 ath6kl_err("invalid phy capability!\n");
3922 return -EINVAL;
3923 }
3924
3925 /*
3926 * Even if the fw has HT support, advertise HT cap only when
3927 * the firmware has support to override RSN capability, otherwise
3928 * 4-way handshake would fail.
3929 */
3930 if (!(ht &&
3931 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3932 ar->fw_capabilities))) {
3933 ath6kl_band_2ghz.ht_cap.cap = 0;
3934 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3935 ath6kl_band_5ghz.ht_cap.cap = 0;
3936 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3937
3938 if (ht)
3939 ath6kl_err("Firmware lacks RSN-CAP-OVERRIDE, so HT (802.11n) is disabled.");
3940 }
3941
3942 if (test_bit(ATH6KL_FW_CAPABILITY_64BIT_RATES,
3943 ar->fw_capabilities)) {
3944 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3945 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3946 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3947 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3948 ar->hw.tx_ant = 0x3; /* mask, 2 antenna */
3949 ar->hw.rx_ant = 0x3;
3950 } else {
3951 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3952 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3953 ar->hw.tx_ant = 1;
3954 ar->hw.rx_ant = 1;
3955 }
3956
3957 wiphy->available_antennas_tx = ar->hw.tx_ant;
3958 wiphy->available_antennas_rx = ar->hw.rx_ant;
3959
3960 if (band_2gig)
3961 wiphy->bands[NL80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3962 if (band_5gig)
3963 wiphy->bands[NL80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3964
3965 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3966
3967 wiphy->cipher_suites = cipher_suites;
3968 wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3969
3970 #ifdef CONFIG_PM
3971 wiphy->wowlan = &ath6kl_wowlan_support;
3972 #endif
3973
3974 wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3975
3976 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3977 WIPHY_FLAG_HAVE_AP_SME |
3978 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3979 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3980
3981 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities))
3982 ar->wiphy->max_sched_scan_reqs = 1;
3983
3984 if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3985 ar->fw_capabilities))
3986 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
3987
3988 ar->wiphy->probe_resp_offload =
3989 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3990 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3991 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3992
3993 ret = wiphy_register(wiphy);
3994 if (ret < 0) {
3995 ath6kl_err("couldn't register wiphy device\n");
3996 return ret;
3997 }
3998
3999 ar->wiphy_registered = true;
4000
4001 return 0;
4002 }
4003
4004 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
4005 {
4006 wiphy_unregister(ar->wiphy);
4007
4008 ar->wiphy_registered = false;
4009 }
4010
4011 struct ath6kl *ath6kl_cfg80211_create(void)
4012 {
4013 struct ath6kl *ar;
4014 struct wiphy *wiphy;
4015
4016 /* create a new wiphy for use with cfg80211 */
4017 wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
4018
4019 if (!wiphy) {
4020 ath6kl_err("couldn't allocate wiphy device\n");
4021 return NULL;
4022 }
4023
4024 ar = wiphy_priv(wiphy);
4025 ar->wiphy = wiphy;
4026
4027 return ar;
4028 }
4029
4030 /* Note: ar variable must not be accessed after calling this! */
4031 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
4032 {
4033 int i;
4034
4035 for (i = 0; i < AP_MAX_NUM_STA; i++)
4036 kfree(ar->sta_list[i].aggr_conn);
4037
4038 wiphy_free(ar->wiphy);
4039 }
4040
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