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tree-wide: replace config_enabled() with IS_ENABLED()
[GitHub/moto-9609/android_kernel_motorola_exynos9610.git] / drivers / net / wireless / ath / ath6kl / cfg80211.c
1 /*
2 * Copyright (c) 2004-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20 #include <linux/moduleparam.h>
21 #include <linux/inetdevice.h>
22 #include <linux/export.h>
23
24 #include "core.h"
25 #include "cfg80211.h"
26 #include "debug.h"
27 #include "hif-ops.h"
28 #include "testmode.h"
29
30 #define RATETAB_ENT(_rate, _rateid, _flags) { \
31 .bitrate = (_rate), \
32 .flags = (_flags), \
33 .hw_value = (_rateid), \
34 }
35
36 #define CHAN2G(_channel, _freq, _flags) { \
37 .band = NL80211_BAND_2GHZ, \
38 .hw_value = (_channel), \
39 .center_freq = (_freq), \
40 .flags = (_flags), \
41 .max_antenna_gain = 0, \
42 .max_power = 30, \
43 }
44
45 #define CHAN5G(_channel, _flags) { \
46 .band = NL80211_BAND_5GHZ, \
47 .hw_value = (_channel), \
48 .center_freq = 5000 + (5 * (_channel)), \
49 .flags = (_flags), \
50 .max_antenna_gain = 0, \
51 .max_power = 30, \
52 }
53
54 #define DEFAULT_BG_SCAN_PERIOD 60
55
56 struct ath6kl_cfg80211_match_probe_ssid {
57 struct cfg80211_ssid ssid;
58 u8 flag;
59 };
60
61 static struct ieee80211_rate ath6kl_rates[] = {
62 RATETAB_ENT(10, 0x1, 0),
63 RATETAB_ENT(20, 0x2, 0),
64 RATETAB_ENT(55, 0x4, 0),
65 RATETAB_ENT(110, 0x8, 0),
66 RATETAB_ENT(60, 0x10, 0),
67 RATETAB_ENT(90, 0x20, 0),
68 RATETAB_ENT(120, 0x40, 0),
69 RATETAB_ENT(180, 0x80, 0),
70 RATETAB_ENT(240, 0x100, 0),
71 RATETAB_ENT(360, 0x200, 0),
72 RATETAB_ENT(480, 0x400, 0),
73 RATETAB_ENT(540, 0x800, 0),
74 };
75
76 #define ath6kl_a_rates (ath6kl_rates + 4)
77 #define ath6kl_a_rates_size 8
78 #define ath6kl_g_rates (ath6kl_rates + 0)
79 #define ath6kl_g_rates_size 12
80
81 #define ath6kl_g_htcap IEEE80211_HT_CAP_SGI_20
82 #define ath6kl_a_htcap (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \
83 IEEE80211_HT_CAP_SGI_20 | \
84 IEEE80211_HT_CAP_SGI_40)
85
86 static struct ieee80211_channel ath6kl_2ghz_channels[] = {
87 CHAN2G(1, 2412, 0),
88 CHAN2G(2, 2417, 0),
89 CHAN2G(3, 2422, 0),
90 CHAN2G(4, 2427, 0),
91 CHAN2G(5, 2432, 0),
92 CHAN2G(6, 2437, 0),
93 CHAN2G(7, 2442, 0),
94 CHAN2G(8, 2447, 0),
95 CHAN2G(9, 2452, 0),
96 CHAN2G(10, 2457, 0),
97 CHAN2G(11, 2462, 0),
98 CHAN2G(12, 2467, 0),
99 CHAN2G(13, 2472, 0),
100 CHAN2G(14, 2484, 0),
101 };
102
103 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = {
104 CHAN5G(34, 0), CHAN5G(36, 0),
105 CHAN5G(38, 0), CHAN5G(40, 0),
106 CHAN5G(42, 0), CHAN5G(44, 0),
107 CHAN5G(46, 0), CHAN5G(48, 0),
108 CHAN5G(52, 0), CHAN5G(56, 0),
109 CHAN5G(60, 0), CHAN5G(64, 0),
110 CHAN5G(100, 0), CHAN5G(104, 0),
111 CHAN5G(108, 0), CHAN5G(112, 0),
112 CHAN5G(116, 0), CHAN5G(120, 0),
113 CHAN5G(124, 0), CHAN5G(128, 0),
114 CHAN5G(132, 0), CHAN5G(136, 0),
115 CHAN5G(140, 0), CHAN5G(149, 0),
116 CHAN5G(153, 0), CHAN5G(157, 0),
117 CHAN5G(161, 0), CHAN5G(165, 0),
118 CHAN5G(184, 0), CHAN5G(188, 0),
119 CHAN5G(192, 0), CHAN5G(196, 0),
120 CHAN5G(200, 0), CHAN5G(204, 0),
121 CHAN5G(208, 0), CHAN5G(212, 0),
122 CHAN5G(216, 0),
123 };
124
125 static struct ieee80211_supported_band ath6kl_band_2ghz = {
126 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels),
127 .channels = ath6kl_2ghz_channels,
128 .n_bitrates = ath6kl_g_rates_size,
129 .bitrates = ath6kl_g_rates,
130 .ht_cap.cap = ath6kl_g_htcap,
131 .ht_cap.ht_supported = true,
132 };
133
134 static struct ieee80211_supported_band ath6kl_band_5ghz = {
135 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels),
136 .channels = ath6kl_5ghz_a_channels,
137 .n_bitrates = ath6kl_a_rates_size,
138 .bitrates = ath6kl_a_rates,
139 .ht_cap.cap = ath6kl_a_htcap,
140 .ht_cap.ht_supported = true,
141 };
142
143 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */
144
145 /* returns true if scheduled scan was stopped */
146 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif)
147 {
148 struct ath6kl *ar = vif->ar;
149
150 if (!test_and_clear_bit(SCHED_SCANNING, &vif->flags))
151 return false;
152
153 del_timer_sync(&vif->sched_scan_timer);
154
155 if (ar->state == ATH6KL_STATE_RECOVERY)
156 return true;
157
158 ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, false);
159
160 return true;
161 }
162
163 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif)
164 {
165 struct ath6kl *ar = vif->ar;
166 bool stopped;
167
168 stopped = __ath6kl_cfg80211_sscan_stop(vif);
169
170 if (!stopped)
171 return;
172
173 cfg80211_sched_scan_stopped(ar->wiphy);
174 }
175
176 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif,
177 enum nl80211_wpa_versions wpa_version)
178 {
179 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version);
180
181 if (!wpa_version) {
182 vif->auth_mode = NONE_AUTH;
183 } else if (wpa_version & NL80211_WPA_VERSION_2) {
184 vif->auth_mode = WPA2_AUTH;
185 } else if (wpa_version & NL80211_WPA_VERSION_1) {
186 vif->auth_mode = WPA_AUTH;
187 } else {
188 ath6kl_err("%s: %u not supported\n", __func__, wpa_version);
189 return -ENOTSUPP;
190 }
191
192 return 0;
193 }
194
195 static int ath6kl_set_auth_type(struct ath6kl_vif *vif,
196 enum nl80211_auth_type auth_type)
197 {
198 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type);
199
200 switch (auth_type) {
201 case NL80211_AUTHTYPE_OPEN_SYSTEM:
202 vif->dot11_auth_mode = OPEN_AUTH;
203 break;
204 case NL80211_AUTHTYPE_SHARED_KEY:
205 vif->dot11_auth_mode = SHARED_AUTH;
206 break;
207 case NL80211_AUTHTYPE_NETWORK_EAP:
208 vif->dot11_auth_mode = LEAP_AUTH;
209 break;
210
211 case NL80211_AUTHTYPE_AUTOMATIC:
212 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH;
213 break;
214
215 default:
216 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type);
217 return -ENOTSUPP;
218 }
219
220 return 0;
221 }
222
223 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast)
224 {
225 u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto;
226 u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len :
227 &vif->grp_crypto_len;
228
229 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n",
230 __func__, cipher, ucast);
231
232 switch (cipher) {
233 case 0:
234 /* our own hack to use value 0 as no crypto used */
235 *ar_cipher = NONE_CRYPT;
236 *ar_cipher_len = 0;
237 break;
238 case WLAN_CIPHER_SUITE_WEP40:
239 *ar_cipher = WEP_CRYPT;
240 *ar_cipher_len = 5;
241 break;
242 case WLAN_CIPHER_SUITE_WEP104:
243 *ar_cipher = WEP_CRYPT;
244 *ar_cipher_len = 13;
245 break;
246 case WLAN_CIPHER_SUITE_TKIP:
247 *ar_cipher = TKIP_CRYPT;
248 *ar_cipher_len = 0;
249 break;
250 case WLAN_CIPHER_SUITE_CCMP:
251 *ar_cipher = AES_CRYPT;
252 *ar_cipher_len = 0;
253 break;
254 case WLAN_CIPHER_SUITE_SMS4:
255 *ar_cipher = WAPI_CRYPT;
256 *ar_cipher_len = 0;
257 break;
258 default:
259 ath6kl_err("cipher 0x%x not supported\n", cipher);
260 return -ENOTSUPP;
261 }
262
263 return 0;
264 }
265
266 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt)
267 {
268 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt);
269
270 if (key_mgmt == WLAN_AKM_SUITE_PSK) {
271 if (vif->auth_mode == WPA_AUTH)
272 vif->auth_mode = WPA_PSK_AUTH;
273 else if (vif->auth_mode == WPA2_AUTH)
274 vif->auth_mode = WPA2_PSK_AUTH;
275 } else if (key_mgmt == 0x00409600) {
276 if (vif->auth_mode == WPA_AUTH)
277 vif->auth_mode = WPA_AUTH_CCKM;
278 else if (vif->auth_mode == WPA2_AUTH)
279 vif->auth_mode = WPA2_AUTH_CCKM;
280 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) {
281 vif->auth_mode = NONE_AUTH;
282 }
283 }
284
285 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif)
286 {
287 struct ath6kl *ar = vif->ar;
288
289 if (!test_bit(WMI_READY, &ar->flag)) {
290 ath6kl_err("wmi is not ready\n");
291 return false;
292 }
293
294 if (!test_bit(WLAN_ENABLED, &vif->flags)) {
295 ath6kl_err("wlan disabled\n");
296 return false;
297 }
298
299 return true;
300 }
301
302 static bool ath6kl_is_wpa_ie(const u8 *pos)
303 {
304 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
305 pos[2] == 0x00 && pos[3] == 0x50 &&
306 pos[4] == 0xf2 && pos[5] == 0x01;
307 }
308
309 static bool ath6kl_is_rsn_ie(const u8 *pos)
310 {
311 return pos[0] == WLAN_EID_RSN;
312 }
313
314 static bool ath6kl_is_wps_ie(const u8 *pos)
315 {
316 return (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
317 pos[1] >= 4 &&
318 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 &&
319 pos[5] == 0x04);
320 }
321
322 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies,
323 size_t ies_len)
324 {
325 struct ath6kl *ar = vif->ar;
326 const u8 *pos;
327 u8 *buf = NULL;
328 size_t len = 0;
329 int ret;
330
331 /*
332 * Clear previously set flag
333 */
334
335 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
336
337 /*
338 * Filter out RSN/WPA IE(s)
339 */
340
341 if (ies && ies_len) {
342 buf = kmalloc(ies_len, GFP_KERNEL);
343 if (buf == NULL)
344 return -ENOMEM;
345 pos = ies;
346
347 while (pos + 1 < ies + ies_len) {
348 if (pos + 2 + pos[1] > ies + ies_len)
349 break;
350 if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) {
351 memcpy(buf + len, pos, 2 + pos[1]);
352 len += 2 + pos[1];
353 }
354
355 if (ath6kl_is_wps_ie(pos))
356 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG;
357
358 pos += 2 + pos[1];
359 }
360 }
361
362 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
363 WMI_FRAME_ASSOC_REQ, buf, len);
364 kfree(buf);
365 return ret;
366 }
367
368 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type)
369 {
370 switch (type) {
371 case NL80211_IFTYPE_STATION:
372 case NL80211_IFTYPE_P2P_CLIENT:
373 *nw_type = INFRA_NETWORK;
374 break;
375 case NL80211_IFTYPE_ADHOC:
376 *nw_type = ADHOC_NETWORK;
377 break;
378 case NL80211_IFTYPE_AP:
379 case NL80211_IFTYPE_P2P_GO:
380 *nw_type = AP_NETWORK;
381 break;
382 default:
383 ath6kl_err("invalid interface type %u\n", type);
384 return -ENOTSUPP;
385 }
386
387 return 0;
388 }
389
390 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type,
391 u8 *if_idx, u8 *nw_type)
392 {
393 int i;
394
395 if (ath6kl_nliftype_to_drv_iftype(type, nw_type))
396 return false;
397
398 if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) &&
399 ar->num_vif))
400 return false;
401
402 if (type == NL80211_IFTYPE_STATION ||
403 type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
404 for (i = 0; i < ar->vif_max; i++) {
405 if ((ar->avail_idx_map) & BIT(i)) {
406 *if_idx = i;
407 return true;
408 }
409 }
410 }
411
412 if (type == NL80211_IFTYPE_P2P_CLIENT ||
413 type == NL80211_IFTYPE_P2P_GO) {
414 for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
415 if ((ar->avail_idx_map) & BIT(i)) {
416 *if_idx = i;
417 return true;
418 }
419 }
420 }
421
422 return false;
423 }
424
425 static bool ath6kl_is_tx_pending(struct ath6kl *ar)
426 {
427 return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0;
428 }
429
430 static void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif,
431 bool enable)
432 {
433 int err;
434
435 if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
436 return;
437
438 if (vif->nw_type != INFRA_NETWORK)
439 return;
440
441 if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
442 vif->ar->fw_capabilities))
443 return;
444
445 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
446 enable ? "enable" : "disable");
447
448 err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
449 vif->fw_vif_idx, enable);
450 if (err)
451 ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
452 enable ? "enable" : "disable", err);
453 }
454
455 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
456 struct cfg80211_connect_params *sme)
457 {
458 struct ath6kl *ar = ath6kl_priv(dev);
459 struct ath6kl_vif *vif = netdev_priv(dev);
460 int status;
461 u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
462 u16 interval;
463
464 ath6kl_cfg80211_sscan_disable(vif);
465
466 vif->sme_state = SME_CONNECTING;
467
468 if (!ath6kl_cfg80211_ready(vif))
469 return -EIO;
470
471 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
472 ath6kl_err("destroy in progress\n");
473 return -EBUSY;
474 }
475
476 if (test_bit(SKIP_SCAN, &ar->flag) &&
477 ((sme->channel && sme->channel->center_freq == 0) ||
478 (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
479 ath6kl_err("SkipScan: channel or bssid invalid\n");
480 return -EINVAL;
481 }
482
483 if (down_interruptible(&ar->sem)) {
484 ath6kl_err("busy, couldn't get access\n");
485 return -ERESTARTSYS;
486 }
487
488 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
489 ath6kl_err("busy, destroy in progress\n");
490 up(&ar->sem);
491 return -EBUSY;
492 }
493
494 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
495 /*
496 * sleep until the command queue drains
497 */
498 wait_event_interruptible_timeout(ar->event_wq,
499 ath6kl_is_tx_pending(ar),
500 WMI_TIMEOUT);
501 if (signal_pending(current)) {
502 ath6kl_err("cmd queue drain timeout\n");
503 up(&ar->sem);
504 return -EINTR;
505 }
506 }
507
508 status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
509 if (status) {
510 up(&ar->sem);
511 return status;
512 }
513
514 if (sme->ie == NULL || sme->ie_len == 0)
515 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
516
517 if (test_bit(CONNECTED, &vif->flags) &&
518 vif->ssid_len == sme->ssid_len &&
519 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
520 vif->reconnect_flag = true;
521 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx,
522 vif->req_bssid,
523 vif->ch_hint);
524
525 up(&ar->sem);
526 if (status) {
527 ath6kl_err("wmi_reconnect_cmd failed\n");
528 return -EIO;
529 }
530 return 0;
531 } else if (vif->ssid_len == sme->ssid_len &&
532 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
533 ath6kl_disconnect(vif);
534 }
535
536 memset(vif->ssid, 0, sizeof(vif->ssid));
537 vif->ssid_len = sme->ssid_len;
538 memcpy(vif->ssid, sme->ssid, sme->ssid_len);
539
540 if (sme->channel)
541 vif->ch_hint = sme->channel->center_freq;
542
543 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
544 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
545 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid));
546
547 ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions);
548
549 status = ath6kl_set_auth_type(vif, sme->auth_type);
550 if (status) {
551 up(&ar->sem);
552 return status;
553 }
554
555 if (sme->crypto.n_ciphers_pairwise)
556 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true);
557 else
558 ath6kl_set_cipher(vif, 0, true);
559
560 ath6kl_set_cipher(vif, sme->crypto.cipher_group, false);
561
562 if (sme->crypto.n_akm_suites)
563 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]);
564
565 if ((sme->key_len) &&
566 (vif->auth_mode == NONE_AUTH) &&
567 (vif->prwise_crypto == WEP_CRYPT)) {
568 struct ath6kl_key *key = NULL;
569
570 if (sme->key_idx > WMI_MAX_KEY_INDEX) {
571 ath6kl_err("key index %d out of bounds\n",
572 sme->key_idx);
573 up(&ar->sem);
574 return -ENOENT;
575 }
576
577 key = &vif->keys[sme->key_idx];
578 key->key_len = sme->key_len;
579 memcpy(key->key, sme->key, key->key_len);
580 key->cipher = vif->prwise_crypto;
581 vif->def_txkey_index = sme->key_idx;
582
583 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx,
584 vif->prwise_crypto,
585 GROUP_USAGE | TX_USAGE,
586 key->key_len,
587 NULL, 0,
588 key->key, KEY_OP_INIT_VAL, NULL,
589 NO_SYNC_WMIFLAG);
590 }
591
592 if (!ar->usr_bss_filter) {
593 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
594 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
595 ALL_BSS_FILTER, 0) != 0) {
596 ath6kl_err("couldn't set bss filtering\n");
597 up(&ar->sem);
598 return -EIO;
599 }
600 }
601
602 vif->nw_type = vif->next_mode;
603
604 /* enable enhanced bmiss detection if applicable */
605 ath6kl_cfg80211_sta_bmiss_enhance(vif, true);
606
607 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
608 nw_subtype = SUBTYPE_P2PCLIENT;
609
610 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
611 "%s: connect called with authmode %d dot11 auth %d"
612 " PW crypto %d PW crypto len %d GRP crypto %d"
613 " GRP crypto len %d channel hint %u\n",
614 __func__,
615 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
616 vif->prwise_crypto_len, vif->grp_crypto,
617 vif->grp_crypto_len, vif->ch_hint);
618
619 vif->reconnect_flag = 0;
620
621 if (vif->nw_type == INFRA_NETWORK) {
622 interval = max_t(u16, vif->listen_intvl_t,
623 ATH6KL_MAX_WOW_LISTEN_INTL);
624 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
625 interval,
626 0);
627 if (status) {
628 ath6kl_err("couldn't set listen intervel\n");
629 up(&ar->sem);
630 return status;
631 }
632 }
633
634 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
635 vif->dot11_auth_mode, vif->auth_mode,
636 vif->prwise_crypto,
637 vif->prwise_crypto_len,
638 vif->grp_crypto, vif->grp_crypto_len,
639 vif->ssid_len, vif->ssid,
640 vif->req_bssid, vif->ch_hint,
641 ar->connect_ctrl_flags, nw_subtype);
642
643 if (sme->bg_scan_period == 0) {
644 /* disable background scan if period is 0 */
645 sme->bg_scan_period = 0xffff;
646 } else if (sme->bg_scan_period == -1) {
647 /* configure default value if not specified */
648 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
649 }
650
651 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
652 sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
653
654 up(&ar->sem);
655
656 if (status == -EINVAL) {
657 memset(vif->ssid, 0, sizeof(vif->ssid));
658 vif->ssid_len = 0;
659 ath6kl_err("invalid request\n");
660 return -ENOENT;
661 } else if (status) {
662 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
663 return -EIO;
664 }
665
666 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
667 ((vif->auth_mode == WPA_PSK_AUTH) ||
668 (vif->auth_mode == WPA2_PSK_AUTH))) {
669 mod_timer(&vif->disconnect_timer,
670 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
671 }
672
673 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
674 set_bit(CONNECT_PEND, &vif->flags);
675
676 return 0;
677 }
678
679 static struct cfg80211_bss *
680 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif,
681 enum network_type nw_type,
682 const u8 *bssid,
683 struct ieee80211_channel *chan,
684 const u8 *beacon_ie,
685 size_t beacon_ie_len)
686 {
687 struct ath6kl *ar = vif->ar;
688 struct cfg80211_bss *bss;
689 u16 cap_val;
690 enum ieee80211_bss_type bss_type;
691 u8 *ie;
692
693 if (nw_type & ADHOC_NETWORK) {
694 cap_val = WLAN_CAPABILITY_IBSS;
695 bss_type = IEEE80211_BSS_TYPE_IBSS;
696 } else {
697 cap_val = WLAN_CAPABILITY_ESS;
698 bss_type = IEEE80211_BSS_TYPE_ESS;
699 }
700
701 bss = cfg80211_get_bss(ar->wiphy, chan, bssid,
702 vif->ssid, vif->ssid_len,
703 bss_type, IEEE80211_PRIVACY_ANY);
704 if (bss == NULL) {
705 /*
706 * Since cfg80211 may not yet know about the BSS,
707 * generate a partial entry until the first BSS info
708 * event becomes available.
709 *
710 * Prepend SSID element since it is not included in the Beacon
711 * IEs from the target.
712 */
713 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL);
714 if (ie == NULL)
715 return NULL;
716 ie[0] = WLAN_EID_SSID;
717 ie[1] = vif->ssid_len;
718 memcpy(ie + 2, vif->ssid, vif->ssid_len);
719 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len);
720 bss = cfg80211_inform_bss(ar->wiphy, chan,
721 CFG80211_BSS_FTYPE_UNKNOWN,
722 bssid, 0, cap_val, 100,
723 ie, 2 + vif->ssid_len + beacon_ie_len,
724 0, GFP_KERNEL);
725 if (bss)
726 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
727 "added bss %pM to cfg80211\n", bssid);
728 kfree(ie);
729 } else {
730 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n");
731 }
732
733 return bss;
734 }
735
736 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
737 u8 *bssid, u16 listen_intvl,
738 u16 beacon_intvl,
739 enum network_type nw_type,
740 u8 beacon_ie_len, u8 assoc_req_len,
741 u8 assoc_resp_len, u8 *assoc_info)
742 {
743 struct ieee80211_channel *chan;
744 struct ath6kl *ar = vif->ar;
745 struct cfg80211_bss *bss;
746
747 /* capinfo + listen interval */
748 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
749
750 /* capinfo + status code + associd */
751 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
752
753 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
754 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
755 assoc_resp_ie_offset;
756
757 assoc_req_len -= assoc_req_ie_offset;
758 assoc_resp_len -= assoc_resp_ie_offset;
759
760 /*
761 * Store Beacon interval here; DTIM period will be available only once
762 * a Beacon frame from the AP is seen.
763 */
764 vif->assoc_bss_beacon_int = beacon_intvl;
765 clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
766
767 if (nw_type & ADHOC_NETWORK) {
768 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
769 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
770 "%s: ath6k not in ibss mode\n", __func__);
771 return;
772 }
773 }
774
775 if (nw_type & INFRA_NETWORK) {
776 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
777 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
778 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
779 "%s: ath6k not in station mode\n", __func__);
780 return;
781 }
782 }
783
784 chan = ieee80211_get_channel(ar->wiphy, (int) channel);
785
786 bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
787 assoc_info, beacon_ie_len);
788 if (!bss) {
789 ath6kl_err("could not add cfg80211 bss entry\n");
790 return;
791 }
792
793 if (nw_type & ADHOC_NETWORK) {
794 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
795 nw_type & ADHOC_CREATOR ? "creator" : "joiner");
796 cfg80211_ibss_joined(vif->ndev, bssid, chan, GFP_KERNEL);
797 cfg80211_put_bss(ar->wiphy, bss);
798 return;
799 }
800
801 if (vif->sme_state == SME_CONNECTING) {
802 /* inform connect result to cfg80211 */
803 vif->sme_state = SME_CONNECTED;
804 cfg80211_connect_result(vif->ndev, bssid,
805 assoc_req_ie, assoc_req_len,
806 assoc_resp_ie, assoc_resp_len,
807 WLAN_STATUS_SUCCESS, GFP_KERNEL);
808 cfg80211_put_bss(ar->wiphy, bss);
809 } else if (vif->sme_state == SME_CONNECTED) {
810 /* inform roam event to cfg80211 */
811 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len,
812 assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
813 }
814 }
815
816 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
817 struct net_device *dev, u16 reason_code)
818 {
819 struct ath6kl *ar = ath6kl_priv(dev);
820 struct ath6kl_vif *vif = netdev_priv(dev);
821
822 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
823 reason_code);
824
825 ath6kl_cfg80211_sscan_disable(vif);
826
827 if (!ath6kl_cfg80211_ready(vif))
828 return -EIO;
829
830 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
831 ath6kl_err("busy, destroy in progress\n");
832 return -EBUSY;
833 }
834
835 if (down_interruptible(&ar->sem)) {
836 ath6kl_err("busy, couldn't get access\n");
837 return -ERESTARTSYS;
838 }
839
840 vif->reconnect_flag = 0;
841 ath6kl_disconnect(vif);
842 memset(vif->ssid, 0, sizeof(vif->ssid));
843 vif->ssid_len = 0;
844
845 if (!test_bit(SKIP_SCAN, &ar->flag))
846 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
847
848 up(&ar->sem);
849
850 return 0;
851 }
852
853 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
854 u8 *bssid, u8 assoc_resp_len,
855 u8 *assoc_info, u16 proto_reason)
856 {
857 struct ath6kl *ar = vif->ar;
858
859 if (vif->scan_req) {
860 struct cfg80211_scan_info info = {
861 .aborted = true,
862 };
863
864 cfg80211_scan_done(vif->scan_req, &info);
865 vif->scan_req = NULL;
866 }
867
868 if (vif->nw_type & ADHOC_NETWORK) {
869 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC)
870 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
871 "%s: ath6k not in ibss mode\n", __func__);
872 return;
873 }
874
875 if (vif->nw_type & INFRA_NETWORK) {
876 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
877 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
878 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
879 "%s: ath6k not in station mode\n", __func__);
880 return;
881 }
882 }
883
884 clear_bit(CONNECT_PEND, &vif->flags);
885
886 if (vif->sme_state == SME_CONNECTING) {
887 cfg80211_connect_result(vif->ndev,
888 bssid, NULL, 0,
889 NULL, 0,
890 WLAN_STATUS_UNSPECIFIED_FAILURE,
891 GFP_KERNEL);
892 } else if (vif->sme_state == SME_CONNECTED) {
893 cfg80211_disconnected(vif->ndev, proto_reason,
894 NULL, 0, false, GFP_KERNEL);
895 }
896
897 vif->sme_state = SME_DISCONNECTED;
898
899 /*
900 * Send a disconnect command to target when a disconnect event is
901 * received with reason code other than 3 (DISCONNECT_CMD - disconnect
902 * request from host) to make the firmware stop trying to connect even
903 * after giving disconnect event. There will be one more disconnect
904 * event for this disconnect command with reason code DISCONNECT_CMD
905 * which won't be notified to cfg80211.
906 */
907 if (reason != DISCONNECT_CMD)
908 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
909 }
910
911 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
912 struct ath6kl_vif *vif,
913 struct cfg80211_ssid *ssids, int n_ssids,
914 struct cfg80211_match_set *match_set,
915 int n_match_ssid)
916 {
917 u8 i, j, index_to_add, ssid_found = false;
918 struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS];
919
920 memset(ssid_list, 0, sizeof(ssid_list));
921
922 if (n_ssids > MAX_PROBED_SSIDS ||
923 n_match_ssid > MAX_PROBED_SSIDS)
924 return -EINVAL;
925
926 for (i = 0; i < n_ssids; i++) {
927 memcpy(ssid_list[i].ssid.ssid,
928 ssids[i].ssid,
929 ssids[i].ssid_len);
930 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len;
931
932 if (ssids[i].ssid_len)
933 ssid_list[i].flag = SPECIFIC_SSID_FLAG;
934 else
935 ssid_list[i].flag = ANY_SSID_FLAG;
936
937 if (n_match_ssid == 0)
938 ssid_list[i].flag |= MATCH_SSID_FLAG;
939 }
940
941 index_to_add = i;
942
943 for (i = 0; i < n_match_ssid; i++) {
944 ssid_found = false;
945
946 for (j = 0; j < n_ssids; j++) {
947 if ((match_set[i].ssid.ssid_len ==
948 ssid_list[j].ssid.ssid_len) &&
949 (!memcmp(ssid_list[j].ssid.ssid,
950 match_set[i].ssid.ssid,
951 match_set[i].ssid.ssid_len))) {
952 ssid_list[j].flag |= MATCH_SSID_FLAG;
953 ssid_found = true;
954 break;
955 }
956 }
957
958 if (ssid_found)
959 continue;
960
961 if (index_to_add >= MAX_PROBED_SSIDS)
962 continue;
963
964 ssid_list[index_to_add].ssid.ssid_len =
965 match_set[i].ssid.ssid_len;
966 memcpy(ssid_list[index_to_add].ssid.ssid,
967 match_set[i].ssid.ssid,
968 match_set[i].ssid.ssid_len);
969 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG;
970 index_to_add++;
971 }
972
973 for (i = 0; i < index_to_add; i++) {
974 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
975 ssid_list[i].flag,
976 ssid_list[i].ssid.ssid_len,
977 ssid_list[i].ssid.ssid);
978 }
979
980 /* Make sure no old entries are left behind */
981 for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) {
982 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
983 DISABLE_SSID_FLAG, 0, NULL);
984 }
985
986 return 0;
987 }
988
989 static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
990 struct cfg80211_scan_request *request)
991 {
992 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
993 struct ath6kl *ar = ath6kl_priv(vif->ndev);
994 s8 n_channels = 0;
995 u16 *channels = NULL;
996 int ret = 0;
997 u32 force_fg_scan = 0;
998
999 if (!ath6kl_cfg80211_ready(vif))
1000 return -EIO;
1001
1002 ath6kl_cfg80211_sscan_disable(vif);
1003
1004 if (!ar->usr_bss_filter) {
1005 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1006 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1007 ALL_BSS_FILTER, 0);
1008 if (ret) {
1009 ath6kl_err("couldn't set bss filtering\n");
1010 return ret;
1011 }
1012 }
1013
1014 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
1015 request->n_ssids, NULL, 0);
1016 if (ret < 0)
1017 return ret;
1018
1019 /* this also clears IE in fw if it's not set */
1020 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
1021 WMI_FRAME_PROBE_REQ,
1022 request->ie, request->ie_len);
1023 if (ret) {
1024 ath6kl_err("failed to set Probe Request appie for scan\n");
1025 return ret;
1026 }
1027
1028 /*
1029 * Scan only the requested channels if the request specifies a set of
1030 * channels. If the list is longer than the target supports, do not
1031 * configure the list and instead, scan all available channels.
1032 */
1033 if (request->n_channels > 0 &&
1034 request->n_channels <= WMI_MAX_CHANNELS) {
1035 u8 i;
1036
1037 n_channels = request->n_channels;
1038
1039 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
1040 if (channels == NULL) {
1041 ath6kl_warn("failed to set scan channels, scan all channels");
1042 n_channels = 0;
1043 }
1044
1045 for (i = 0; i < n_channels; i++)
1046 channels[i] = request->channels[i]->center_freq;
1047 }
1048
1049 if (test_bit(CONNECTED, &vif->flags))
1050 force_fg_scan = 1;
1051
1052 vif->scan_req = request;
1053
1054 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
1055 WMI_LONG_SCAN, force_fg_scan,
1056 false, 0,
1057 ATH6KL_FG_SCAN_INTERVAL,
1058 n_channels, channels,
1059 request->no_cck,
1060 request->rates);
1061 if (ret) {
1062 ath6kl_err("failed to start scan: %d\n", ret);
1063 vif->scan_req = NULL;
1064 }
1065
1066 kfree(channels);
1067
1068 return ret;
1069 }
1070
1071 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1072 {
1073 struct ath6kl *ar = vif->ar;
1074 struct cfg80211_scan_info info = {
1075 .aborted = aborted,
1076 };
1077 int i;
1078
1079 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1080 aborted ? " aborted" : "");
1081
1082 if (!vif->scan_req)
1083 return;
1084
1085 if (aborted)
1086 goto out;
1087
1088 if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1089 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1090 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1091 i + 1, DISABLE_SSID_FLAG,
1092 0, NULL);
1093 }
1094 }
1095
1096 out:
1097 cfg80211_scan_done(vif->scan_req, &info);
1098 vif->scan_req = NULL;
1099 }
1100
1101 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1102 enum wmi_phy_mode mode)
1103 {
1104 struct cfg80211_chan_def chandef;
1105
1106 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1107 "channel switch notify nw_type %d freq %d mode %d\n",
1108 vif->nw_type, freq, mode);
1109
1110 cfg80211_chandef_create(&chandef,
1111 ieee80211_get_channel(vif->ar->wiphy, freq),
1112 (mode == WMI_11G_HT20 &&
1113 ath6kl_band_2ghz.ht_cap.ht_supported) ?
1114 NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT);
1115
1116 mutex_lock(&vif->wdev.mtx);
1117 cfg80211_ch_switch_notify(vif->ndev, &chandef);
1118 mutex_unlock(&vif->wdev.mtx);
1119 }
1120
1121 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1122 u8 key_index, bool pairwise,
1123 const u8 *mac_addr,
1124 struct key_params *params)
1125 {
1126 struct ath6kl *ar = ath6kl_priv(ndev);
1127 struct ath6kl_vif *vif = netdev_priv(ndev);
1128 struct ath6kl_key *key = NULL;
1129 int seq_len;
1130 u8 key_usage;
1131 u8 key_type;
1132
1133 if (!ath6kl_cfg80211_ready(vif))
1134 return -EIO;
1135
1136 if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1137 if (params->key_len != WMI_KRK_LEN)
1138 return -EINVAL;
1139 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1140 params->key);
1141 }
1142
1143 if (key_index > WMI_MAX_KEY_INDEX) {
1144 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1145 "%s: key index %d out of bounds\n", __func__,
1146 key_index);
1147 return -ENOENT;
1148 }
1149
1150 key = &vif->keys[key_index];
1151 memset(key, 0, sizeof(struct ath6kl_key));
1152
1153 if (pairwise)
1154 key_usage = PAIRWISE_USAGE;
1155 else
1156 key_usage = GROUP_USAGE;
1157
1158 seq_len = params->seq_len;
1159 if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1160 seq_len > ATH6KL_KEY_SEQ_LEN) {
1161 /* Only first half of the WPI PN is configured */
1162 seq_len = ATH6KL_KEY_SEQ_LEN;
1163 }
1164 if (params->key_len > WLAN_MAX_KEY_LEN ||
1165 seq_len > sizeof(key->seq))
1166 return -EINVAL;
1167
1168 key->key_len = params->key_len;
1169 memcpy(key->key, params->key, key->key_len);
1170 key->seq_len = seq_len;
1171 memcpy(key->seq, params->seq, key->seq_len);
1172 key->cipher = params->cipher;
1173
1174 switch (key->cipher) {
1175 case WLAN_CIPHER_SUITE_WEP40:
1176 case WLAN_CIPHER_SUITE_WEP104:
1177 key_type = WEP_CRYPT;
1178 break;
1179
1180 case WLAN_CIPHER_SUITE_TKIP:
1181 key_type = TKIP_CRYPT;
1182 break;
1183
1184 case WLAN_CIPHER_SUITE_CCMP:
1185 key_type = AES_CRYPT;
1186 break;
1187 case WLAN_CIPHER_SUITE_SMS4:
1188 key_type = WAPI_CRYPT;
1189 break;
1190
1191 default:
1192 return -ENOTSUPP;
1193 }
1194
1195 if (((vif->auth_mode == WPA_PSK_AUTH) ||
1196 (vif->auth_mode == WPA2_PSK_AUTH)) &&
1197 (key_usage & GROUP_USAGE))
1198 del_timer(&vif->disconnect_timer);
1199
1200 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1201 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1202 __func__, key_index, key->key_len, key_type,
1203 key_usage, key->seq_len);
1204
1205 if (vif->nw_type == AP_NETWORK && !pairwise &&
1206 (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1207 key_type == WAPI_CRYPT)) {
1208 ar->ap_mode_bkey.valid = true;
1209 ar->ap_mode_bkey.key_index = key_index;
1210 ar->ap_mode_bkey.key_type = key_type;
1211 ar->ap_mode_bkey.key_len = key->key_len;
1212 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1213 if (!test_bit(CONNECTED, &vif->flags)) {
1214 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1215 "Delay initial group key configuration until AP mode has been started\n");
1216 /*
1217 * The key will be set in ath6kl_connect_ap_mode() once
1218 * the connected event is received from the target.
1219 */
1220 return 0;
1221 }
1222 }
1223
1224 if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1225 !test_bit(CONNECTED, &vif->flags)) {
1226 /*
1227 * Store the key locally so that it can be re-configured after
1228 * the AP mode has properly started
1229 * (ath6kl_install_statioc_wep_keys).
1230 */
1231 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1232 "Delay WEP key configuration until AP mode has been started\n");
1233 vif->wep_key_list[key_index].key_len = key->key_len;
1234 memcpy(vif->wep_key_list[key_index].key, key->key,
1235 key->key_len);
1236 return 0;
1237 }
1238
1239 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1240 key_type, key_usage, key->key_len,
1241 key->seq, key->seq_len, key->key,
1242 KEY_OP_INIT_VAL,
1243 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1244 }
1245
1246 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1247 u8 key_index, bool pairwise,
1248 const u8 *mac_addr)
1249 {
1250 struct ath6kl *ar = ath6kl_priv(ndev);
1251 struct ath6kl_vif *vif = netdev_priv(ndev);
1252
1253 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1254
1255 if (!ath6kl_cfg80211_ready(vif))
1256 return -EIO;
1257
1258 if (key_index > WMI_MAX_KEY_INDEX) {
1259 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1260 "%s: key index %d out of bounds\n", __func__,
1261 key_index);
1262 return -ENOENT;
1263 }
1264
1265 if (!vif->keys[key_index].key_len) {
1266 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1267 "%s: index %d is empty\n", __func__, key_index);
1268 return 0;
1269 }
1270
1271 vif->keys[key_index].key_len = 0;
1272
1273 return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1274 }
1275
1276 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1277 u8 key_index, bool pairwise,
1278 const u8 *mac_addr, void *cookie,
1279 void (*callback) (void *cookie,
1280 struct key_params *))
1281 {
1282 struct ath6kl_vif *vif = netdev_priv(ndev);
1283 struct ath6kl_key *key = NULL;
1284 struct key_params params;
1285
1286 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1287
1288 if (!ath6kl_cfg80211_ready(vif))
1289 return -EIO;
1290
1291 if (key_index > WMI_MAX_KEY_INDEX) {
1292 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1293 "%s: key index %d out of bounds\n", __func__,
1294 key_index);
1295 return -ENOENT;
1296 }
1297
1298 key = &vif->keys[key_index];
1299 memset(&params, 0, sizeof(params));
1300 params.cipher = key->cipher;
1301 params.key_len = key->key_len;
1302 params.seq_len = key->seq_len;
1303 params.seq = key->seq;
1304 params.key = key->key;
1305
1306 callback(cookie, &params);
1307
1308 return key->key_len ? 0 : -ENOENT;
1309 }
1310
1311 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1312 struct net_device *ndev,
1313 u8 key_index, bool unicast,
1314 bool multicast)
1315 {
1316 struct ath6kl *ar = ath6kl_priv(ndev);
1317 struct ath6kl_vif *vif = netdev_priv(ndev);
1318 struct ath6kl_key *key = NULL;
1319 u8 key_usage;
1320 enum crypto_type key_type = NONE_CRYPT;
1321
1322 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1323
1324 if (!ath6kl_cfg80211_ready(vif))
1325 return -EIO;
1326
1327 if (key_index > WMI_MAX_KEY_INDEX) {
1328 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1329 "%s: key index %d out of bounds\n",
1330 __func__, key_index);
1331 return -ENOENT;
1332 }
1333
1334 if (!vif->keys[key_index].key_len) {
1335 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1336 __func__, key_index);
1337 return -EINVAL;
1338 }
1339
1340 vif->def_txkey_index = key_index;
1341 key = &vif->keys[vif->def_txkey_index];
1342 key_usage = GROUP_USAGE;
1343 if (vif->prwise_crypto == WEP_CRYPT)
1344 key_usage |= TX_USAGE;
1345 if (unicast)
1346 key_type = vif->prwise_crypto;
1347 if (multicast)
1348 key_type = vif->grp_crypto;
1349
1350 if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1351 return 0; /* Delay until AP mode has been started */
1352
1353 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1354 vif->def_txkey_index,
1355 key_type, key_usage,
1356 key->key_len, key->seq, key->seq_len,
1357 key->key,
1358 KEY_OP_INIT_VAL, NULL,
1359 SYNC_BOTH_WMIFLAG);
1360 }
1361
1362 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1363 bool ismcast)
1364 {
1365 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1366 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1367
1368 cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1369 (ismcast ? NL80211_KEYTYPE_GROUP :
1370 NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1371 GFP_KERNEL);
1372 }
1373
1374 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1375 {
1376 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1377 struct ath6kl_vif *vif;
1378 int ret;
1379
1380 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1381 changed);
1382
1383 vif = ath6kl_vif_first(ar);
1384 if (!vif)
1385 return -EIO;
1386
1387 if (!ath6kl_cfg80211_ready(vif))
1388 return -EIO;
1389
1390 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1391 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1392 if (ret != 0) {
1393 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1394 return -EIO;
1395 }
1396 }
1397
1398 return 0;
1399 }
1400
1401 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1402 struct wireless_dev *wdev,
1403 enum nl80211_tx_power_setting type,
1404 int mbm)
1405 {
1406 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1407 struct ath6kl_vif *vif;
1408 int dbm = MBM_TO_DBM(mbm);
1409
1410 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1411 type, dbm);
1412
1413 vif = ath6kl_vif_first(ar);
1414 if (!vif)
1415 return -EIO;
1416
1417 if (!ath6kl_cfg80211_ready(vif))
1418 return -EIO;
1419
1420 switch (type) {
1421 case NL80211_TX_POWER_AUTOMATIC:
1422 return 0;
1423 case NL80211_TX_POWER_LIMITED:
1424 ar->tx_pwr = dbm;
1425 break;
1426 default:
1427 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1428 __func__, type);
1429 return -EOPNOTSUPP;
1430 }
1431
1432 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1433
1434 return 0;
1435 }
1436
1437 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy,
1438 struct wireless_dev *wdev,
1439 int *dbm)
1440 {
1441 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1442 struct ath6kl_vif *vif;
1443
1444 vif = ath6kl_vif_first(ar);
1445 if (!vif)
1446 return -EIO;
1447
1448 if (!ath6kl_cfg80211_ready(vif))
1449 return -EIO;
1450
1451 if (test_bit(CONNECTED, &vif->flags)) {
1452 ar->tx_pwr = 0;
1453
1454 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1455 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1456 return -EIO;
1457 }
1458
1459 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1460 5 * HZ);
1461
1462 if (signal_pending(current)) {
1463 ath6kl_err("target did not respond\n");
1464 return -EINTR;
1465 }
1466 }
1467
1468 *dbm = ar->tx_pwr;
1469 return 0;
1470 }
1471
1472 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1473 struct net_device *dev,
1474 bool pmgmt, int timeout)
1475 {
1476 struct ath6kl *ar = ath6kl_priv(dev);
1477 struct wmi_power_mode_cmd mode;
1478 struct ath6kl_vif *vif = netdev_priv(dev);
1479
1480 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1481 __func__, pmgmt, timeout);
1482
1483 if (!ath6kl_cfg80211_ready(vif))
1484 return -EIO;
1485
1486 if (pmgmt) {
1487 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1488 mode.pwr_mode = REC_POWER;
1489 } else {
1490 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1491 mode.pwr_mode = MAX_PERF_POWER;
1492 }
1493
1494 if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1495 mode.pwr_mode) != 0) {
1496 ath6kl_err("wmi_powermode_cmd failed\n");
1497 return -EIO;
1498 }
1499
1500 return 0;
1501 }
1502
1503 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1504 const char *name,
1505 unsigned char name_assign_type,
1506 enum nl80211_iftype type,
1507 u32 *flags,
1508 struct vif_params *params)
1509 {
1510 struct ath6kl *ar = wiphy_priv(wiphy);
1511 struct wireless_dev *wdev;
1512 u8 if_idx, nw_type;
1513
1514 if (ar->num_vif == ar->vif_max) {
1515 ath6kl_err("Reached maximum number of supported vif\n");
1516 return ERR_PTR(-EINVAL);
1517 }
1518
1519 if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1520 ath6kl_err("Not a supported interface type\n");
1521 return ERR_PTR(-EINVAL);
1522 }
1523
1524 wdev = ath6kl_interface_add(ar, name, name_assign_type, type, if_idx, nw_type);
1525 if (!wdev)
1526 return ERR_PTR(-ENOMEM);
1527
1528 ar->num_vif++;
1529
1530 return wdev;
1531 }
1532
1533 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1534 struct wireless_dev *wdev)
1535 {
1536 struct ath6kl *ar = wiphy_priv(wiphy);
1537 struct ath6kl_vif *vif = netdev_priv(wdev->netdev);
1538
1539 spin_lock_bh(&ar->list_lock);
1540 list_del(&vif->list);
1541 spin_unlock_bh(&ar->list_lock);
1542
1543 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1544
1545 rtnl_lock();
1546 ath6kl_cfg80211_vif_cleanup(vif);
1547 rtnl_unlock();
1548
1549 return 0;
1550 }
1551
1552 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1553 struct net_device *ndev,
1554 enum nl80211_iftype type, u32 *flags,
1555 struct vif_params *params)
1556 {
1557 struct ath6kl_vif *vif = netdev_priv(ndev);
1558 int i;
1559
1560 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1561
1562 /*
1563 * Don't bring up p2p on an interface which is not initialized
1564 * for p2p operation where fw does not have capability to switch
1565 * dynamically between non-p2p and p2p type interface.
1566 */
1567 if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1568 vif->ar->fw_capabilities) &&
1569 (type == NL80211_IFTYPE_P2P_CLIENT ||
1570 type == NL80211_IFTYPE_P2P_GO)) {
1571 if (vif->ar->vif_max == 1) {
1572 if (vif->fw_vif_idx != 0)
1573 return -EINVAL;
1574 else
1575 goto set_iface_type;
1576 }
1577
1578 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1579 if (i == vif->fw_vif_idx)
1580 break;
1581 }
1582
1583 if (i == vif->ar->vif_max) {
1584 ath6kl_err("Invalid interface to bring up P2P\n");
1585 return -EINVAL;
1586 }
1587 }
1588
1589 /* need to clean up enhanced bmiss detection fw state */
1590 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1591
1592 set_iface_type:
1593 switch (type) {
1594 case NL80211_IFTYPE_STATION:
1595 case NL80211_IFTYPE_P2P_CLIENT:
1596 vif->next_mode = INFRA_NETWORK;
1597 break;
1598 case NL80211_IFTYPE_ADHOC:
1599 vif->next_mode = ADHOC_NETWORK;
1600 break;
1601 case NL80211_IFTYPE_AP:
1602 case NL80211_IFTYPE_P2P_GO:
1603 vif->next_mode = AP_NETWORK;
1604 break;
1605 default:
1606 ath6kl_err("invalid interface type %u\n", type);
1607 return -EOPNOTSUPP;
1608 }
1609
1610 vif->wdev.iftype = type;
1611
1612 return 0;
1613 }
1614
1615 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1616 struct net_device *dev,
1617 struct cfg80211_ibss_params *ibss_param)
1618 {
1619 struct ath6kl *ar = ath6kl_priv(dev);
1620 struct ath6kl_vif *vif = netdev_priv(dev);
1621 int status;
1622
1623 if (!ath6kl_cfg80211_ready(vif))
1624 return -EIO;
1625
1626 vif->ssid_len = ibss_param->ssid_len;
1627 memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1628
1629 if (ibss_param->chandef.chan)
1630 vif->ch_hint = ibss_param->chandef.chan->center_freq;
1631
1632 if (ibss_param->channel_fixed) {
1633 /*
1634 * TODO: channel_fixed: The channel should be fixed, do not
1635 * search for IBSSs to join on other channels. Target
1636 * firmware does not support this feature, needs to be
1637 * updated.
1638 */
1639 return -EOPNOTSUPP;
1640 }
1641
1642 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1643 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1644 memcpy(vif->req_bssid, ibss_param->bssid,
1645 sizeof(vif->req_bssid));
1646
1647 ath6kl_set_wpa_version(vif, 0);
1648
1649 status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1650 if (status)
1651 return status;
1652
1653 if (ibss_param->privacy) {
1654 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1655 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1656 } else {
1657 ath6kl_set_cipher(vif, 0, true);
1658 ath6kl_set_cipher(vif, 0, false);
1659 }
1660
1661 vif->nw_type = vif->next_mode;
1662
1663 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1664 "%s: connect called with authmode %d dot11 auth %d"
1665 " PW crypto %d PW crypto len %d GRP crypto %d"
1666 " GRP crypto len %d channel hint %u\n",
1667 __func__,
1668 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1669 vif->prwise_crypto_len, vif->grp_crypto,
1670 vif->grp_crypto_len, vif->ch_hint);
1671
1672 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1673 vif->dot11_auth_mode, vif->auth_mode,
1674 vif->prwise_crypto,
1675 vif->prwise_crypto_len,
1676 vif->grp_crypto, vif->grp_crypto_len,
1677 vif->ssid_len, vif->ssid,
1678 vif->req_bssid, vif->ch_hint,
1679 ar->connect_ctrl_flags, SUBTYPE_NONE);
1680 set_bit(CONNECT_PEND, &vif->flags);
1681
1682 return 0;
1683 }
1684
1685 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1686 struct net_device *dev)
1687 {
1688 struct ath6kl_vif *vif = netdev_priv(dev);
1689
1690 if (!ath6kl_cfg80211_ready(vif))
1691 return -EIO;
1692
1693 ath6kl_disconnect(vif);
1694 memset(vif->ssid, 0, sizeof(vif->ssid));
1695 vif->ssid_len = 0;
1696
1697 return 0;
1698 }
1699
1700 static const u32 cipher_suites[] = {
1701 WLAN_CIPHER_SUITE_WEP40,
1702 WLAN_CIPHER_SUITE_WEP104,
1703 WLAN_CIPHER_SUITE_TKIP,
1704 WLAN_CIPHER_SUITE_CCMP,
1705 CCKM_KRK_CIPHER_SUITE,
1706 WLAN_CIPHER_SUITE_SMS4,
1707 };
1708
1709 static bool is_rate_legacy(s32 rate)
1710 {
1711 static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1712 6000, 9000, 12000, 18000, 24000,
1713 36000, 48000, 54000
1714 };
1715 u8 i;
1716
1717 for (i = 0; i < ARRAY_SIZE(legacy); i++)
1718 if (rate == legacy[i])
1719 return true;
1720
1721 return false;
1722 }
1723
1724 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1725 {
1726 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1727 52000, 58500, 65000, 72200
1728 };
1729 u8 i;
1730
1731 for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1732 if (rate == ht20[i]) {
1733 if (i == ARRAY_SIZE(ht20) - 1)
1734 /* last rate uses sgi */
1735 *sgi = true;
1736 else
1737 *sgi = false;
1738
1739 *mcs = i;
1740 return true;
1741 }
1742 }
1743 return false;
1744 }
1745
1746 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1747 {
1748 static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1749 81000, 108000, 121500, 135000,
1750 150000
1751 };
1752 u8 i;
1753
1754 for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1755 if (rate == ht40[i]) {
1756 if (i == ARRAY_SIZE(ht40) - 1)
1757 /* last rate uses sgi */
1758 *sgi = true;
1759 else
1760 *sgi = false;
1761
1762 *mcs = i;
1763 return true;
1764 }
1765 }
1766
1767 return false;
1768 }
1769
1770 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1771 const u8 *mac, struct station_info *sinfo)
1772 {
1773 struct ath6kl *ar = ath6kl_priv(dev);
1774 struct ath6kl_vif *vif = netdev_priv(dev);
1775 long left;
1776 bool sgi;
1777 s32 rate;
1778 int ret;
1779 u8 mcs;
1780
1781 if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1782 return -ENOENT;
1783
1784 if (down_interruptible(&ar->sem))
1785 return -EBUSY;
1786
1787 set_bit(STATS_UPDATE_PEND, &vif->flags);
1788
1789 ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1790
1791 if (ret != 0) {
1792 up(&ar->sem);
1793 return -EIO;
1794 }
1795
1796 left = wait_event_interruptible_timeout(ar->event_wq,
1797 !test_bit(STATS_UPDATE_PEND,
1798 &vif->flags),
1799 WMI_TIMEOUT);
1800
1801 up(&ar->sem);
1802
1803 if (left == 0)
1804 return -ETIMEDOUT;
1805 else if (left < 0)
1806 return left;
1807
1808 if (vif->target_stats.rx_byte) {
1809 sinfo->rx_bytes = vif->target_stats.rx_byte;
1810 sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES64);
1811 sinfo->rx_packets = vif->target_stats.rx_pkt;
1812 sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
1813 }
1814
1815 if (vif->target_stats.tx_byte) {
1816 sinfo->tx_bytes = vif->target_stats.tx_byte;
1817 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES64);
1818 sinfo->tx_packets = vif->target_stats.tx_pkt;
1819 sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
1820 }
1821
1822 sinfo->signal = vif->target_stats.cs_rssi;
1823 sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
1824
1825 rate = vif->target_stats.tx_ucast_rate;
1826
1827 if (is_rate_legacy(rate)) {
1828 sinfo->txrate.legacy = rate / 100;
1829 } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1830 if (sgi) {
1831 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1832 sinfo->txrate.mcs = mcs - 1;
1833 } else {
1834 sinfo->txrate.mcs = mcs;
1835 }
1836
1837 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1838 sinfo->txrate.bw = RATE_INFO_BW_20;
1839 } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1840 if (sgi) {
1841 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1842 sinfo->txrate.mcs = mcs - 1;
1843 } else {
1844 sinfo->txrate.mcs = mcs;
1845 }
1846
1847 sinfo->txrate.bw = RATE_INFO_BW_40;
1848 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1849 } else {
1850 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1851 "invalid rate from stats: %d\n", rate);
1852 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1853 return 0;
1854 }
1855
1856 sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
1857
1858 if (test_bit(CONNECTED, &vif->flags) &&
1859 test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1860 vif->nw_type == INFRA_NETWORK) {
1861 sinfo->filled |= BIT(NL80211_STA_INFO_BSS_PARAM);
1862 sinfo->bss_param.flags = 0;
1863 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1864 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1865 }
1866
1867 return 0;
1868 }
1869
1870 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1871 struct cfg80211_pmksa *pmksa)
1872 {
1873 struct ath6kl *ar = ath6kl_priv(netdev);
1874 struct ath6kl_vif *vif = netdev_priv(netdev);
1875
1876 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1877 pmksa->pmkid, true);
1878 }
1879
1880 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1881 struct cfg80211_pmksa *pmksa)
1882 {
1883 struct ath6kl *ar = ath6kl_priv(netdev);
1884 struct ath6kl_vif *vif = netdev_priv(netdev);
1885
1886 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1887 pmksa->pmkid, false);
1888 }
1889
1890 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1891 {
1892 struct ath6kl *ar = ath6kl_priv(netdev);
1893 struct ath6kl_vif *vif = netdev_priv(netdev);
1894
1895 if (test_bit(CONNECTED, &vif->flags))
1896 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1897 vif->bssid, NULL, false);
1898 return 0;
1899 }
1900
1901 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1902 struct cfg80211_wowlan *wow, u32 *filter)
1903 {
1904 int ret, pos;
1905 u8 mask[WOW_PATTERN_SIZE];
1906 u16 i;
1907
1908 /* Configure the patterns that we received from the user. */
1909 for (i = 0; i < wow->n_patterns; i++) {
1910 /*
1911 * Convert given nl80211 specific mask value to equivalent
1912 * driver specific mask value and send it to the chip along
1913 * with patterns. For example, If the mask value defined in
1914 * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1915 * then equivalent driver specific mask value is
1916 * "0xFF 0x00 0xFF 0x00".
1917 */
1918 memset(&mask, 0, sizeof(mask));
1919 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1920 if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1921 mask[pos] = 0xFF;
1922 }
1923 /*
1924 * Note: Pattern's offset is not passed as part of wowlan
1925 * parameter from CFG layer. So it's always passed as ZERO
1926 * to the firmware. It means, given WOW patterns are always
1927 * matched from the first byte of received pkt in the firmware.
1928 */
1929 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1930 vif->fw_vif_idx, WOW_LIST_ID,
1931 wow->patterns[i].pattern_len,
1932 0 /* pattern offset */,
1933 wow->patterns[i].pattern, mask);
1934 if (ret)
1935 return ret;
1936 }
1937
1938 if (wow->disconnect)
1939 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1940
1941 if (wow->magic_pkt)
1942 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1943
1944 if (wow->gtk_rekey_failure)
1945 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1946
1947 if (wow->eap_identity_req)
1948 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1949
1950 if (wow->four_way_handshake)
1951 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1952
1953 return 0;
1954 }
1955
1956 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1957 {
1958 static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1959 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1960 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1961 0x00, 0x08 };
1962 static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1963 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1964 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1965 0x00, 0x7f };
1966 u8 unicst_offset = 0;
1967 static const u8 arp_pattern[] = { 0x08, 0x06 };
1968 static const u8 arp_mask[] = { 0xff, 0xff };
1969 u8 arp_offset = 20;
1970 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1971 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1972 u8 discvr_offset = 38;
1973 static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1974 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1975 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1976 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1977 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1978 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1979 static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1980 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1981 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1982 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1983 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1984 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1985 u8 dhcp_offset = 0;
1986 int ret;
1987
1988 /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1989 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1990 vif->fw_vif_idx, WOW_LIST_ID,
1991 sizeof(unicst_pattern), unicst_offset,
1992 unicst_pattern, unicst_mask);
1993 if (ret) {
1994 ath6kl_err("failed to add WOW unicast IP pattern\n");
1995 return ret;
1996 }
1997
1998 /* Setup all ARP pkt pattern */
1999 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2000 vif->fw_vif_idx, WOW_LIST_ID,
2001 sizeof(arp_pattern), arp_offset,
2002 arp_pattern, arp_mask);
2003 if (ret) {
2004 ath6kl_err("failed to add WOW ARP pattern\n");
2005 return ret;
2006 }
2007
2008 /*
2009 * Setup multicast pattern for mDNS 224.0.0.251,
2010 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2011 */
2012 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2013 vif->fw_vif_idx, WOW_LIST_ID,
2014 sizeof(discvr_pattern), discvr_offset,
2015 discvr_pattern, discvr_mask);
2016 if (ret) {
2017 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2018 return ret;
2019 }
2020
2021 /* Setup all DHCP broadcast pkt pattern */
2022 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2023 vif->fw_vif_idx, WOW_LIST_ID,
2024 sizeof(dhcp_pattern), dhcp_offset,
2025 dhcp_pattern, dhcp_mask);
2026 if (ret) {
2027 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2028 return ret;
2029 }
2030
2031 return 0;
2032 }
2033
2034 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2035 {
2036 struct net_device *ndev = vif->ndev;
2037 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2038 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2039 u8 discvr_offset = 38;
2040 u8 mac_mask[ETH_ALEN];
2041 int ret;
2042
2043 /* Setup unicast pkt pattern */
2044 eth_broadcast_addr(mac_mask);
2045 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2046 vif->fw_vif_idx, WOW_LIST_ID,
2047 ETH_ALEN, 0, ndev->dev_addr,
2048 mac_mask);
2049 if (ret) {
2050 ath6kl_err("failed to add WOW unicast pattern\n");
2051 return ret;
2052 }
2053
2054 /*
2055 * Setup multicast pattern for mDNS 224.0.0.251,
2056 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2057 */
2058 if ((ndev->flags & IFF_ALLMULTI) ||
2059 (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2060 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2061 vif->fw_vif_idx, WOW_LIST_ID,
2062 sizeof(discvr_pattern), discvr_offset,
2063 discvr_pattern, discvr_mask);
2064 if (ret) {
2065 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2066 return ret;
2067 }
2068 }
2069
2070 return 0;
2071 }
2072
2073 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2074 {
2075 return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2076 }
2077
2078 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2079 {
2080 return !ar->tx_pending[ar->ctrl_ep];
2081 }
2082
2083 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2084 {
2085 int ret, left;
2086
2087 clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2088
2089 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2090 ATH6KL_HOST_MODE_ASLEEP);
2091 if (ret)
2092 return ret;
2093
2094 left = wait_event_interruptible_timeout(ar->event_wq,
2095 is_hsleep_mode_procsed(vif),
2096 WMI_TIMEOUT);
2097 if (left == 0) {
2098 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2099 ret = -ETIMEDOUT;
2100 } else if (left < 0) {
2101 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2102 left);
2103 ret = left;
2104 }
2105
2106 if (ar->tx_pending[ar->ctrl_ep]) {
2107 left = wait_event_interruptible_timeout(ar->event_wq,
2108 is_ctrl_ep_empty(ar),
2109 WMI_TIMEOUT);
2110 if (left == 0) {
2111 ath6kl_warn("clear wmi ctrl data timeout\n");
2112 ret = -ETIMEDOUT;
2113 } else if (left < 0) {
2114 ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2115 ret = left;
2116 }
2117 }
2118
2119 return ret;
2120 }
2121
2122 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif,
2123 struct cfg80211_wowlan *wow, u32 *filter)
2124 {
2125 struct ath6kl *ar = vif->ar;
2126 struct in_device *in_dev;
2127 struct in_ifaddr *ifa;
2128 int ret;
2129 u16 i, bmiss_time;
2130 __be32 ips[MAX_IP_ADDRS];
2131 u8 index = 0;
2132
2133 if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2134 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2135 ar->fw_capabilities)) {
2136 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2137 vif->fw_vif_idx, false);
2138 if (ret)
2139 return ret;
2140 }
2141
2142 /* Clear existing WOW patterns */
2143 for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2144 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2145 WOW_LIST_ID, i);
2146
2147 /*
2148 * Skip the default WOW pattern configuration
2149 * if the driver receives any WOW patterns from
2150 * the user.
2151 */
2152 if (wow)
2153 ret = ath6kl_wow_usr(ar, vif, wow, filter);
2154 else if (vif->nw_type == AP_NETWORK)
2155 ret = ath6kl_wow_ap(ar, vif);
2156 else
2157 ret = ath6kl_wow_sta(ar, vif);
2158
2159 if (ret)
2160 return ret;
2161
2162 netif_stop_queue(vif->ndev);
2163
2164 if (vif->nw_type != AP_NETWORK) {
2165 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2166 ATH6KL_MAX_WOW_LISTEN_INTL,
2167 0);
2168 if (ret)
2169 return ret;
2170
2171 /* Set listen interval x 15 times as bmiss time */
2172 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2173 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2174 bmiss_time = ATH6KL_MAX_BMISS_TIME;
2175
2176 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2177 bmiss_time, 0);
2178 if (ret)
2179 return ret;
2180
2181 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2182 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2183 0, 0, 0, 0);
2184 if (ret)
2185 return ret;
2186 }
2187
2188 /* Setup own IP addr for ARP agent. */
2189 in_dev = __in_dev_get_rtnl(vif->ndev);
2190 if (!in_dev)
2191 return 0;
2192
2193 ifa = in_dev->ifa_list;
2194 memset(&ips, 0, sizeof(ips));
2195
2196 /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2197 while (index < MAX_IP_ADDRS && ifa) {
2198 ips[index] = ifa->ifa_local;
2199 ifa = ifa->ifa_next;
2200 index++;
2201 }
2202
2203 if (ifa) {
2204 ath6kl_err("total IP addr count is exceeding fw limit\n");
2205 return -EINVAL;
2206 }
2207
2208 ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2209 if (ret) {
2210 ath6kl_err("fail to setup ip for arp agent\n");
2211 return ret;
2212 }
2213
2214 return ret;
2215 }
2216
2217 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2218 {
2219 struct ath6kl_vif *first_vif, *vif;
2220 int ret = 0;
2221 u32 filter = 0;
2222 bool connected = false;
2223
2224 /* enter / leave wow suspend on first vif always */
2225 first_vif = ath6kl_vif_first(ar);
2226 if (WARN_ON(!first_vif) ||
2227 !ath6kl_cfg80211_ready(first_vif))
2228 return -EIO;
2229
2230 if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2231 return -EINVAL;
2232
2233 /* install filters for each connected vif */
2234 spin_lock_bh(&ar->list_lock);
2235 list_for_each_entry(vif, &ar->vif_list, list) {
2236 if (!test_bit(CONNECTED, &vif->flags) ||
2237 !ath6kl_cfg80211_ready(vif))
2238 continue;
2239 connected = true;
2240
2241 ret = ath6kl_wow_suspend_vif(vif, wow, &filter);
2242 if (ret)
2243 break;
2244 }
2245 spin_unlock_bh(&ar->list_lock);
2246
2247 if (!connected)
2248 return -ENOTCONN;
2249 else if (ret)
2250 return ret;
2251
2252 ar->state = ATH6KL_STATE_SUSPENDING;
2253
2254 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx,
2255 ATH6KL_WOW_MODE_ENABLE,
2256 filter,
2257 WOW_HOST_REQ_DELAY);
2258 if (ret)
2259 return ret;
2260
2261 return ath6kl_cfg80211_host_sleep(ar, first_vif);
2262 }
2263
2264 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif)
2265 {
2266 struct ath6kl *ar = vif->ar;
2267 int ret;
2268
2269 if (vif->nw_type != AP_NETWORK) {
2270 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2271 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2272 if (ret)
2273 return ret;
2274
2275 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2276 vif->listen_intvl_t, 0);
2277 if (ret)
2278 return ret;
2279
2280 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2281 vif->bmiss_time_t, 0);
2282 if (ret)
2283 return ret;
2284 }
2285
2286 if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2287 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2288 ar->fw_capabilities)) {
2289 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2290 vif->fw_vif_idx, true);
2291 if (ret)
2292 return ret;
2293 }
2294
2295 netif_wake_queue(vif->ndev);
2296
2297 return 0;
2298 }
2299
2300 static int ath6kl_wow_resume(struct ath6kl *ar)
2301 {
2302 struct ath6kl_vif *vif;
2303 int ret;
2304
2305 vif = ath6kl_vif_first(ar);
2306 if (WARN_ON(!vif) ||
2307 !ath6kl_cfg80211_ready(vif))
2308 return -EIO;
2309
2310 ar->state = ATH6KL_STATE_RESUMING;
2311
2312 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2313 ATH6KL_HOST_MODE_AWAKE);
2314 if (ret) {
2315 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2316 ret);
2317 goto cleanup;
2318 }
2319
2320 spin_lock_bh(&ar->list_lock);
2321 list_for_each_entry(vif, &ar->vif_list, list) {
2322 if (!test_bit(CONNECTED, &vif->flags) ||
2323 !ath6kl_cfg80211_ready(vif))
2324 continue;
2325 ret = ath6kl_wow_resume_vif(vif);
2326 if (ret)
2327 break;
2328 }
2329 spin_unlock_bh(&ar->list_lock);
2330
2331 if (ret)
2332 goto cleanup;
2333
2334 ar->state = ATH6KL_STATE_ON;
2335 return 0;
2336
2337 cleanup:
2338 ar->state = ATH6KL_STATE_WOW;
2339 return ret;
2340 }
2341
2342 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2343 {
2344 struct ath6kl_vif *vif;
2345 int ret;
2346
2347 vif = ath6kl_vif_first(ar);
2348 if (!vif)
2349 return -EIO;
2350
2351 if (!test_bit(WMI_READY, &ar->flag)) {
2352 ath6kl_err("deepsleep failed as wmi is not ready\n");
2353 return -EIO;
2354 }
2355
2356 ath6kl_cfg80211_stop_all(ar);
2357
2358 /* Save the current power mode before enabling power save */
2359 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2360
2361 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2362 if (ret)
2363 return ret;
2364
2365 /* Disable WOW mode */
2366 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2367 ATH6KL_WOW_MODE_DISABLE,
2368 0, 0);
2369 if (ret)
2370 return ret;
2371
2372 /* Flush all non control pkts in TX path */
2373 ath6kl_tx_data_cleanup(ar);
2374
2375 ret = ath6kl_cfg80211_host_sleep(ar, vif);
2376 if (ret)
2377 return ret;
2378
2379 return 0;
2380 }
2381
2382 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2383 {
2384 struct ath6kl_vif *vif;
2385 int ret;
2386
2387 vif = ath6kl_vif_first(ar);
2388
2389 if (!vif)
2390 return -EIO;
2391
2392 if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2393 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2394 ar->wmi->saved_pwr_mode);
2395 if (ret)
2396 return ret;
2397 }
2398
2399 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2400 ATH6KL_HOST_MODE_AWAKE);
2401 if (ret)
2402 return ret;
2403
2404 ar->state = ATH6KL_STATE_ON;
2405
2406 /* Reset scan parameter to default values */
2407 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2408 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2409 if (ret)
2410 return ret;
2411
2412 return 0;
2413 }
2414
2415 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2416 enum ath6kl_cfg_suspend_mode mode,
2417 struct cfg80211_wowlan *wow)
2418 {
2419 struct ath6kl_vif *vif;
2420 enum ath6kl_state prev_state;
2421 int ret;
2422
2423 switch (mode) {
2424 case ATH6KL_CFG_SUSPEND_WOW:
2425
2426 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2427
2428 /* Flush all non control pkts in TX path */
2429 ath6kl_tx_data_cleanup(ar);
2430
2431 prev_state = ar->state;
2432
2433 ret = ath6kl_wow_suspend(ar, wow);
2434 if (ret) {
2435 ar->state = prev_state;
2436 return ret;
2437 }
2438
2439 ar->state = ATH6KL_STATE_WOW;
2440 break;
2441
2442 case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2443
2444 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2445
2446 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2447 if (ret) {
2448 ath6kl_err("deepsleep suspend failed: %d\n", ret);
2449 return ret;
2450 }
2451
2452 ar->state = ATH6KL_STATE_DEEPSLEEP;
2453
2454 break;
2455
2456 case ATH6KL_CFG_SUSPEND_CUTPOWER:
2457
2458 ath6kl_cfg80211_stop_all(ar);
2459
2460 if (ar->state == ATH6KL_STATE_OFF) {
2461 ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2462 "suspend hw off, no action for cutpower\n");
2463 break;
2464 }
2465
2466 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2467
2468 ret = ath6kl_init_hw_stop(ar);
2469 if (ret) {
2470 ath6kl_warn("failed to stop hw during suspend: %d\n",
2471 ret);
2472 }
2473
2474 ar->state = ATH6KL_STATE_CUTPOWER;
2475
2476 break;
2477
2478 default:
2479 break;
2480 }
2481
2482 list_for_each_entry(vif, &ar->vif_list, list)
2483 ath6kl_cfg80211_scan_complete_event(vif, true);
2484
2485 return 0;
2486 }
2487 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2488
2489 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2490 {
2491 int ret;
2492
2493 switch (ar->state) {
2494 case ATH6KL_STATE_WOW:
2495 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2496
2497 ret = ath6kl_wow_resume(ar);
2498 if (ret) {
2499 ath6kl_warn("wow mode resume failed: %d\n", ret);
2500 return ret;
2501 }
2502
2503 break;
2504
2505 case ATH6KL_STATE_DEEPSLEEP:
2506 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2507
2508 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2509 if (ret) {
2510 ath6kl_warn("deep sleep resume failed: %d\n", ret);
2511 return ret;
2512 }
2513 break;
2514
2515 case ATH6KL_STATE_CUTPOWER:
2516 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2517
2518 ret = ath6kl_init_hw_start(ar);
2519 if (ret) {
2520 ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2521 return ret;
2522 }
2523 break;
2524
2525 default:
2526 break;
2527 }
2528
2529 return 0;
2530 }
2531 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2532
2533 #ifdef CONFIG_PM
2534
2535 /* hif layer decides what suspend mode to use */
2536 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2537 struct cfg80211_wowlan *wow)
2538 {
2539 struct ath6kl *ar = wiphy_priv(wiphy);
2540
2541 ath6kl_recovery_suspend(ar);
2542
2543 return ath6kl_hif_suspend(ar, wow);
2544 }
2545
2546 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2547 {
2548 struct ath6kl *ar = wiphy_priv(wiphy);
2549 int err;
2550
2551 err = ath6kl_hif_resume(ar);
2552 if (err)
2553 return err;
2554
2555 ath6kl_recovery_resume(ar);
2556
2557 return 0;
2558 }
2559
2560 /*
2561 * FIXME: WOW suspend mode is selected if the host sdio controller supports
2562 * both sdio irq wake up and keep power. The target pulls sdio data line to
2563 * wake up the host when WOW pattern matches. This causes sdio irq handler
2564 * is being called in the host side which internally hits ath6kl's RX path.
2565 *
2566 * Since sdio interrupt is not disabled, RX path executes even before
2567 * the host executes the actual resume operation from PM module.
2568 *
2569 * In the current scenario, WOW resume should happen before start processing
2570 * any data from the target. So It's required to perform WOW resume in RX path.
2571 * Ideally we should perform WOW resume only in the actual platform
2572 * resume path. This area needs bit rework to avoid WOW resume in RX path.
2573 *
2574 * ath6kl_check_wow_status() is called from ath6kl_rx().
2575 */
2576 void ath6kl_check_wow_status(struct ath6kl *ar)
2577 {
2578 if (ar->state == ATH6KL_STATE_SUSPENDING)
2579 return;
2580
2581 if (ar->state == ATH6KL_STATE_WOW)
2582 ath6kl_cfg80211_resume(ar);
2583 }
2584
2585 #else
2586
2587 void ath6kl_check_wow_status(struct ath6kl *ar)
2588 {
2589 }
2590 #endif
2591
2592 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum nl80211_band band,
2593 bool ht_enable)
2594 {
2595 struct ath6kl_htcap *htcap = &vif->htcap[band];
2596
2597 if (htcap->ht_enable == ht_enable)
2598 return 0;
2599
2600 if (ht_enable) {
2601 /* Set default ht capabilities */
2602 htcap->ht_enable = true;
2603 htcap->cap_info = (band == NL80211_BAND_2GHZ) ?
2604 ath6kl_g_htcap : ath6kl_a_htcap;
2605 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2606 } else /* Disable ht */
2607 memset(htcap, 0, sizeof(*htcap));
2608
2609 return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2610 band, htcap);
2611 }
2612
2613 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2614 {
2615 struct wiphy *wiphy = vif->ar->wiphy;
2616 int band, ret = 0;
2617
2618 for (band = 0; band < NUM_NL80211_BANDS; band++) {
2619 if (!wiphy->bands[band])
2620 continue;
2621
2622 ret = ath6kl_set_htcap(vif, band,
2623 wiphy->bands[band]->ht_cap.ht_supported);
2624 if (ret)
2625 return ret;
2626 }
2627
2628 return ret;
2629 }
2630
2631 static bool ath6kl_is_p2p_ie(const u8 *pos)
2632 {
2633 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2634 pos[2] == 0x50 && pos[3] == 0x6f &&
2635 pos[4] == 0x9a && pos[5] == 0x09;
2636 }
2637
2638 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2639 const u8 *ies, size_t ies_len)
2640 {
2641 struct ath6kl *ar = vif->ar;
2642 const u8 *pos;
2643 u8 *buf = NULL;
2644 size_t len = 0;
2645 int ret;
2646
2647 /*
2648 * Filter out P2P IE(s) since they will be included depending on
2649 * the Probe Request frame in ath6kl_send_go_probe_resp().
2650 */
2651
2652 if (ies && ies_len) {
2653 buf = kmalloc(ies_len, GFP_KERNEL);
2654 if (buf == NULL)
2655 return -ENOMEM;
2656 pos = ies;
2657 while (pos + 1 < ies + ies_len) {
2658 if (pos + 2 + pos[1] > ies + ies_len)
2659 break;
2660 if (!ath6kl_is_p2p_ie(pos)) {
2661 memcpy(buf + len, pos, 2 + pos[1]);
2662 len += 2 + pos[1];
2663 }
2664 pos += 2 + pos[1];
2665 }
2666 }
2667
2668 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2669 WMI_FRAME_PROBE_RESP, buf, len);
2670 kfree(buf);
2671 return ret;
2672 }
2673
2674 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2675 struct cfg80211_beacon_data *info)
2676 {
2677 struct ath6kl *ar = vif->ar;
2678 int res;
2679
2680 /* this also clears IE in fw if it's not set */
2681 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2682 WMI_FRAME_BEACON,
2683 info->beacon_ies,
2684 info->beacon_ies_len);
2685 if (res)
2686 return res;
2687
2688 /* this also clears IE in fw if it's not set */
2689 res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2690 info->proberesp_ies_len);
2691 if (res)
2692 return res;
2693
2694 /* this also clears IE in fw if it's not set */
2695 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2696 WMI_FRAME_ASSOC_RESP,
2697 info->assocresp_ies,
2698 info->assocresp_ies_len);
2699 if (res)
2700 return res;
2701
2702 return 0;
2703 }
2704
2705 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2706 u8 *rsn_capab)
2707 {
2708 const u8 *rsn_ie;
2709 size_t rsn_ie_len;
2710 u16 cnt;
2711
2712 if (!beacon->tail)
2713 return -EINVAL;
2714
2715 rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2716 if (!rsn_ie)
2717 return -EINVAL;
2718
2719 rsn_ie_len = *(rsn_ie + 1);
2720 /* skip element id and length */
2721 rsn_ie += 2;
2722
2723 /* skip version */
2724 if (rsn_ie_len < 2)
2725 return -EINVAL;
2726 rsn_ie += 2;
2727 rsn_ie_len -= 2;
2728
2729 /* skip group cipher suite */
2730 if (rsn_ie_len < 4)
2731 return 0;
2732 rsn_ie += 4;
2733 rsn_ie_len -= 4;
2734
2735 /* skip pairwise cipher suite */
2736 if (rsn_ie_len < 2)
2737 return 0;
2738 cnt = get_unaligned_le16(rsn_ie);
2739 rsn_ie += (2 + cnt * 4);
2740 rsn_ie_len -= (2 + cnt * 4);
2741
2742 /* skip akm suite */
2743 if (rsn_ie_len < 2)
2744 return 0;
2745 cnt = get_unaligned_le16(rsn_ie);
2746 rsn_ie += (2 + cnt * 4);
2747 rsn_ie_len -= (2 + cnt * 4);
2748
2749 if (rsn_ie_len < 2)
2750 return 0;
2751
2752 memcpy(rsn_capab, rsn_ie, 2);
2753
2754 return 0;
2755 }
2756
2757 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2758 struct cfg80211_ap_settings *info)
2759 {
2760 struct ath6kl *ar = ath6kl_priv(dev);
2761 struct ath6kl_vif *vif = netdev_priv(dev);
2762 struct ieee80211_mgmt *mgmt;
2763 bool hidden = false;
2764 u8 *ies;
2765 int ies_len;
2766 struct wmi_connect_cmd p;
2767 int res;
2768 int i, ret;
2769 u16 rsn_capab = 0;
2770 int inactivity_timeout = 0;
2771
2772 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2773
2774 if (!ath6kl_cfg80211_ready(vif))
2775 return -EIO;
2776
2777 if (vif->next_mode != AP_NETWORK)
2778 return -EOPNOTSUPP;
2779
2780 res = ath6kl_set_ies(vif, &info->beacon);
2781
2782 ar->ap_mode_bkey.valid = false;
2783
2784 ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx,
2785 info->beacon_interval);
2786
2787 if (ret)
2788 ath6kl_warn("Failed to set beacon interval: %d\n", ret);
2789
2790 ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2791 info->dtim_period);
2792
2793 /* ignore error, just print a warning and continue normally */
2794 if (ret)
2795 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2796
2797 if (info->beacon.head == NULL)
2798 return -EINVAL;
2799 mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2800 ies = mgmt->u.beacon.variable;
2801 if (ies > info->beacon.head + info->beacon.head_len)
2802 return -EINVAL;
2803 ies_len = info->beacon.head + info->beacon.head_len - ies;
2804
2805 if (info->ssid == NULL)
2806 return -EINVAL;
2807 memcpy(vif->ssid, info->ssid, info->ssid_len);
2808 vif->ssid_len = info->ssid_len;
2809 if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2810 hidden = true;
2811
2812 res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2813 if (res)
2814 return res;
2815
2816 ret = ath6kl_set_auth_type(vif, info->auth_type);
2817 if (ret)
2818 return ret;
2819
2820 memset(&p, 0, sizeof(p));
2821
2822 for (i = 0; i < info->crypto.n_akm_suites; i++) {
2823 switch (info->crypto.akm_suites[i]) {
2824 case WLAN_AKM_SUITE_8021X:
2825 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2826 p.auth_mode |= WPA_AUTH;
2827 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2828 p.auth_mode |= WPA2_AUTH;
2829 break;
2830 case WLAN_AKM_SUITE_PSK:
2831 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2832 p.auth_mode |= WPA_PSK_AUTH;
2833 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2834 p.auth_mode |= WPA2_PSK_AUTH;
2835 break;
2836 }
2837 }
2838 if (p.auth_mode == 0)
2839 p.auth_mode = NONE_AUTH;
2840 vif->auth_mode = p.auth_mode;
2841
2842 for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2843 switch (info->crypto.ciphers_pairwise[i]) {
2844 case WLAN_CIPHER_SUITE_WEP40:
2845 case WLAN_CIPHER_SUITE_WEP104:
2846 p.prwise_crypto_type |= WEP_CRYPT;
2847 break;
2848 case WLAN_CIPHER_SUITE_TKIP:
2849 p.prwise_crypto_type |= TKIP_CRYPT;
2850 break;
2851 case WLAN_CIPHER_SUITE_CCMP:
2852 p.prwise_crypto_type |= AES_CRYPT;
2853 break;
2854 case WLAN_CIPHER_SUITE_SMS4:
2855 p.prwise_crypto_type |= WAPI_CRYPT;
2856 break;
2857 }
2858 }
2859 if (p.prwise_crypto_type == 0) {
2860 p.prwise_crypto_type = NONE_CRYPT;
2861 ath6kl_set_cipher(vif, 0, true);
2862 } else if (info->crypto.n_ciphers_pairwise == 1) {
2863 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2864 }
2865
2866 switch (info->crypto.cipher_group) {
2867 case WLAN_CIPHER_SUITE_WEP40:
2868 case WLAN_CIPHER_SUITE_WEP104:
2869 p.grp_crypto_type = WEP_CRYPT;
2870 break;
2871 case WLAN_CIPHER_SUITE_TKIP:
2872 p.grp_crypto_type = TKIP_CRYPT;
2873 break;
2874 case WLAN_CIPHER_SUITE_CCMP:
2875 p.grp_crypto_type = AES_CRYPT;
2876 break;
2877 case WLAN_CIPHER_SUITE_SMS4:
2878 p.grp_crypto_type = WAPI_CRYPT;
2879 break;
2880 default:
2881 p.grp_crypto_type = NONE_CRYPT;
2882 break;
2883 }
2884 ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2885
2886 p.nw_type = AP_NETWORK;
2887 vif->nw_type = vif->next_mode;
2888
2889 p.ssid_len = vif->ssid_len;
2890 memcpy(p.ssid, vif->ssid, vif->ssid_len);
2891 p.dot11_auth_mode = vif->dot11_auth_mode;
2892 p.ch = cpu_to_le16(info->chandef.chan->center_freq);
2893
2894 /* Enable uAPSD support by default */
2895 res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2896 if (res < 0)
2897 return res;
2898
2899 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2900 p.nw_subtype = SUBTYPE_P2PGO;
2901 } else {
2902 /*
2903 * Due to firmware limitation, it is not possible to
2904 * do P2P mgmt operations in AP mode
2905 */
2906 p.nw_subtype = SUBTYPE_NONE;
2907 }
2908
2909 if (info->inactivity_timeout) {
2910 inactivity_timeout = info->inactivity_timeout;
2911
2912 if (test_bit(ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS,
2913 ar->fw_capabilities))
2914 inactivity_timeout = DIV_ROUND_UP(inactivity_timeout,
2915 60);
2916
2917 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2918 inactivity_timeout);
2919 if (res < 0)
2920 return res;
2921 }
2922
2923 if (ath6kl_set_htcap(vif, info->chandef.chan->band,
2924 cfg80211_get_chandef_type(&info->chandef)
2925 != NL80211_CHAN_NO_HT))
2926 return -EIO;
2927
2928 /*
2929 * Get the PTKSA replay counter in the RSN IE. Supplicant
2930 * will use the RSN IE in M3 message and firmware has to
2931 * advertise the same in beacon/probe response. Send
2932 * the complete RSN IE capability field to firmware
2933 */
2934 if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2935 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2936 ar->fw_capabilities)) {
2937 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2938 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2939 (const u8 *) &rsn_capab,
2940 sizeof(rsn_capab));
2941 vif->rsn_capab = rsn_capab;
2942 if (res < 0)
2943 return res;
2944 }
2945
2946 memcpy(&vif->profile, &p, sizeof(p));
2947 res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2948 if (res < 0)
2949 return res;
2950
2951 return 0;
2952 }
2953
2954 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2955 struct cfg80211_beacon_data *beacon)
2956 {
2957 struct ath6kl_vif *vif = netdev_priv(dev);
2958
2959 if (!ath6kl_cfg80211_ready(vif))
2960 return -EIO;
2961
2962 if (vif->next_mode != AP_NETWORK)
2963 return -EOPNOTSUPP;
2964
2965 return ath6kl_set_ies(vif, beacon);
2966 }
2967
2968 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2969 {
2970 struct ath6kl *ar = ath6kl_priv(dev);
2971 struct ath6kl_vif *vif = netdev_priv(dev);
2972
2973 if (vif->nw_type != AP_NETWORK)
2974 return -EOPNOTSUPP;
2975 if (!test_bit(CONNECTED, &vif->flags))
2976 return -ENOTCONN;
2977
2978 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2979 clear_bit(CONNECTED, &vif->flags);
2980 netif_carrier_off(vif->ndev);
2981
2982 /* Restore ht setting in firmware */
2983 return ath6kl_restore_htcap(vif);
2984 }
2985
2986 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2987
2988 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2989 struct station_del_parameters *params)
2990 {
2991 struct ath6kl *ar = ath6kl_priv(dev);
2992 struct ath6kl_vif *vif = netdev_priv(dev);
2993 const u8 *addr = params->mac ? params->mac : bcast_addr;
2994
2995 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2996 addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2997 }
2998
2999 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
3000 const u8 *mac,
3001 struct station_parameters *params)
3002 {
3003 struct ath6kl *ar = ath6kl_priv(dev);
3004 struct ath6kl_vif *vif = netdev_priv(dev);
3005 int err;
3006
3007 if (vif->nw_type != AP_NETWORK)
3008 return -EOPNOTSUPP;
3009
3010 err = cfg80211_check_station_change(wiphy, params,
3011 CFG80211_STA_AP_MLME_CLIENT);
3012 if (err)
3013 return err;
3014
3015 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
3016 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3017 WMI_AP_MLME_AUTHORIZE, mac, 0);
3018 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3019 WMI_AP_MLME_UNAUTHORIZE, mac, 0);
3020 }
3021
3022 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
3023 struct wireless_dev *wdev,
3024 struct ieee80211_channel *chan,
3025 unsigned int duration,
3026 u64 *cookie)
3027 {
3028 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3029 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3030 u32 id;
3031
3032 /* TODO: if already pending or ongoing remain-on-channel,
3033 * return -EBUSY */
3034 id = ++vif->last_roc_id;
3035 if (id == 0) {
3036 /* Do not use 0 as the cookie value */
3037 id = ++vif->last_roc_id;
3038 }
3039 *cookie = id;
3040
3041 return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
3042 chan->center_freq, duration);
3043 }
3044
3045 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3046 struct wireless_dev *wdev,
3047 u64 cookie)
3048 {
3049 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3050 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3051
3052 if (cookie != vif->last_roc_id)
3053 return -ENOENT;
3054 vif->last_cancel_roc_id = cookie;
3055
3056 return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3057 }
3058
3059 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3060 const u8 *buf, size_t len,
3061 unsigned int freq)
3062 {
3063 struct ath6kl *ar = vif->ar;
3064 const u8 *pos;
3065 u8 *p2p;
3066 int p2p_len;
3067 int ret;
3068 const struct ieee80211_mgmt *mgmt;
3069
3070 mgmt = (const struct ieee80211_mgmt *) buf;
3071
3072 /* Include P2P IE(s) from the frame generated in user space. */
3073
3074 p2p = kmalloc(len, GFP_KERNEL);
3075 if (p2p == NULL)
3076 return -ENOMEM;
3077 p2p_len = 0;
3078
3079 pos = mgmt->u.probe_resp.variable;
3080 while (pos + 1 < buf + len) {
3081 if (pos + 2 + pos[1] > buf + len)
3082 break;
3083 if (ath6kl_is_p2p_ie(pos)) {
3084 memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3085 p2p_len += 2 + pos[1];
3086 }
3087 pos += 2 + pos[1];
3088 }
3089
3090 ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
3091 mgmt->da, p2p, p2p_len);
3092 kfree(p2p);
3093 return ret;
3094 }
3095
3096 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
3097 u32 id,
3098 u32 freq,
3099 u32 wait,
3100 const u8 *buf,
3101 size_t len,
3102 bool *more_data,
3103 bool no_cck)
3104 {
3105 struct ieee80211_mgmt *mgmt;
3106 struct ath6kl_sta *conn;
3107 bool is_psq_empty = false;
3108 struct ath6kl_mgmt_buff *mgmt_buf;
3109 size_t mgmt_buf_size;
3110 struct ath6kl *ar = vif->ar;
3111
3112 mgmt = (struct ieee80211_mgmt *) buf;
3113 if (is_multicast_ether_addr(mgmt->da))
3114 return false;
3115
3116 conn = ath6kl_find_sta(vif, mgmt->da);
3117 if (!conn)
3118 return false;
3119
3120 if (conn->sta_flags & STA_PS_SLEEP) {
3121 if (!(conn->sta_flags & STA_PS_POLLED)) {
3122 /* Queue the frames if the STA is sleeping */
3123 mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3124 mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3125 if (!mgmt_buf)
3126 return false;
3127
3128 INIT_LIST_HEAD(&mgmt_buf->list);
3129 mgmt_buf->id = id;
3130 mgmt_buf->freq = freq;
3131 mgmt_buf->wait = wait;
3132 mgmt_buf->len = len;
3133 mgmt_buf->no_cck = no_cck;
3134 memcpy(mgmt_buf->buf, buf, len);
3135 spin_lock_bh(&conn->psq_lock);
3136 is_psq_empty = skb_queue_empty(&conn->psq) &&
3137 (conn->mgmt_psq_len == 0);
3138 list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3139 conn->mgmt_psq_len++;
3140 spin_unlock_bh(&conn->psq_lock);
3141
3142 /*
3143 * If this is the first pkt getting queued
3144 * for this STA, update the PVB for this
3145 * STA.
3146 */
3147 if (is_psq_empty)
3148 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3149 conn->aid, 1);
3150 return true;
3151 }
3152
3153 /*
3154 * This tx is because of a PsPoll.
3155 * Determine if MoreData bit has to be set.
3156 */
3157 spin_lock_bh(&conn->psq_lock);
3158 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3159 *more_data = true;
3160 spin_unlock_bh(&conn->psq_lock);
3161 }
3162
3163 return false;
3164 }
3165
3166 /* Check if SSID length is greater than DIRECT- */
3167 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3168 {
3169 const struct ieee80211_mgmt *mgmt;
3170 mgmt = (const struct ieee80211_mgmt *) buf;
3171
3172 /* variable[1] contains the SSID tag length */
3173 if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3174 (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3175 return true;
3176 }
3177
3178 return false;
3179 }
3180
3181 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3182 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
3183 {
3184 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3185 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3186 struct ieee80211_channel *chan = params->chan;
3187 const u8 *buf = params->buf;
3188 size_t len = params->len;
3189 unsigned int wait = params->wait;
3190 bool no_cck = params->no_cck;
3191 u32 id, freq;
3192 const struct ieee80211_mgmt *mgmt;
3193 bool more_data, queued;
3194
3195 /* default to the current channel, but use the one specified as argument
3196 * if any
3197 */
3198 freq = vif->ch_hint;
3199 if (chan)
3200 freq = chan->center_freq;
3201
3202 /* never send freq zero to the firmware */
3203 if (WARN_ON(freq == 0))
3204 return -EINVAL;
3205
3206 mgmt = (const struct ieee80211_mgmt *) buf;
3207 if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3208 ieee80211_is_probe_resp(mgmt->frame_control) &&
3209 ath6kl_is_p2p_go_ssid(buf, len)) {
3210 /*
3211 * Send Probe Response frame in GO mode using a separate WMI
3212 * command to allow the target to fill in the generic IEs.
3213 */
3214 *cookie = 0; /* TX status not supported */
3215 return ath6kl_send_go_probe_resp(vif, buf, len, freq);
3216 }
3217
3218 id = vif->send_action_id++;
3219 if (id == 0) {
3220 /*
3221 * 0 is a reserved value in the WMI command and shall not be
3222 * used for the command.
3223 */
3224 id = vif->send_action_id++;
3225 }
3226
3227 *cookie = id;
3228
3229 /* AP mode Power saving processing */
3230 if (vif->nw_type == AP_NETWORK) {
3231 queued = ath6kl_mgmt_powersave_ap(vif, id, freq, wait, buf, len,
3232 &more_data, no_cck);
3233 if (queued)
3234 return 0;
3235 }
3236
3237 return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id, freq,
3238 wait, buf, len, no_cck);
3239 }
3240
3241 static int ath6kl_get_antenna(struct wiphy *wiphy,
3242 u32 *tx_ant, u32 *rx_ant)
3243 {
3244 struct ath6kl *ar = wiphy_priv(wiphy);
3245 *tx_ant = ar->hw.tx_ant;
3246 *rx_ant = ar->hw.rx_ant;
3247 return 0;
3248 }
3249
3250 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3251 struct wireless_dev *wdev,
3252 u16 frame_type, bool reg)
3253 {
3254 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3255
3256 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3257 __func__, frame_type, reg);
3258 if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3259 /*
3260 * Note: This notification callback is not allowed to sleep, so
3261 * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3262 * hardcode target to report Probe Request frames all the time.
3263 */
3264 vif->probe_req_report = reg;
3265 }
3266 }
3267
3268 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3269 struct net_device *dev,
3270 struct cfg80211_sched_scan_request *request)
3271 {
3272 struct ath6kl *ar = ath6kl_priv(dev);
3273 struct ath6kl_vif *vif = netdev_priv(dev);
3274 u16 interval;
3275 int ret, rssi_thold;
3276 int n_match_sets = request->n_match_sets;
3277
3278 /*
3279 * If there's a matchset w/o an SSID, then assume it's just for
3280 * the RSSI (nothing else is currently supported) and ignore it.
3281 * The device only supports a global RSSI filter that we set below.
3282 */
3283 if (n_match_sets == 1 && !request->match_sets[0].ssid.ssid_len)
3284 n_match_sets = 0;
3285
3286 if (ar->state != ATH6KL_STATE_ON)
3287 return -EIO;
3288
3289 if (vif->sme_state != SME_DISCONNECTED)
3290 return -EBUSY;
3291
3292 ath6kl_cfg80211_scan_complete_event(vif, true);
3293
3294 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3295 request->n_ssids,
3296 request->match_sets,
3297 n_match_sets);
3298 if (ret < 0)
3299 return ret;
3300
3301 if (!n_match_sets) {
3302 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3303 ALL_BSS_FILTER, 0);
3304 if (ret < 0)
3305 return ret;
3306 } else {
3307 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3308 MATCHED_SSID_FILTER, 0);
3309 if (ret < 0)
3310 return ret;
3311 }
3312
3313 if (test_bit(ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD,
3314 ar->fw_capabilities)) {
3315 if (request->min_rssi_thold <= NL80211_SCAN_RSSI_THOLD_OFF)
3316 rssi_thold = 0;
3317 else if (request->min_rssi_thold < -127)
3318 rssi_thold = -127;
3319 else
3320 rssi_thold = request->min_rssi_thold;
3321
3322 ret = ath6kl_wmi_set_rssi_filter_cmd(ar->wmi, vif->fw_vif_idx,
3323 rssi_thold);
3324 if (ret) {
3325 ath6kl_err("failed to set RSSI threshold for scan\n");
3326 return ret;
3327 }
3328 }
3329
3330 /* fw uses seconds, also make sure that it's >0 */
3331 interval = max_t(u16, 1, request->scan_plans[0].interval);
3332
3333 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3334 interval, interval,
3335 vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3336
3337 /* this also clears IE in fw if it's not set */
3338 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3339 WMI_FRAME_PROBE_REQ,
3340 request->ie, request->ie_len);
3341 if (ret) {
3342 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n",
3343 ret);
3344 return ret;
3345 }
3346
3347 ret = ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, true);
3348 if (ret)
3349 return ret;
3350
3351 set_bit(SCHED_SCANNING, &vif->flags);
3352
3353 return 0;
3354 }
3355
3356 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3357 struct net_device *dev)
3358 {
3359 struct ath6kl_vif *vif = netdev_priv(dev);
3360 bool stopped;
3361
3362 stopped = __ath6kl_cfg80211_sscan_stop(vif);
3363
3364 if (!stopped)
3365 return -EIO;
3366
3367 return 0;
3368 }
3369
3370 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy,
3371 struct net_device *dev,
3372 const u8 *addr,
3373 const struct cfg80211_bitrate_mask *mask)
3374 {
3375 struct ath6kl *ar = ath6kl_priv(dev);
3376 struct ath6kl_vif *vif = netdev_priv(dev);
3377
3378 return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx,
3379 mask);
3380 }
3381
3382 static int ath6kl_cfg80211_set_txe_config(struct wiphy *wiphy,
3383 struct net_device *dev,
3384 u32 rate, u32 pkts, u32 intvl)
3385 {
3386 struct ath6kl *ar = ath6kl_priv(dev);
3387 struct ath6kl_vif *vif = netdev_priv(dev);
3388
3389 if (vif->nw_type != INFRA_NETWORK ||
3390 !test_bit(ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, ar->fw_capabilities))
3391 return -EOPNOTSUPP;
3392
3393 if (vif->sme_state != SME_CONNECTED)
3394 return -ENOTCONN;
3395
3396 /* save this since the firmware won't report the interval */
3397 vif->txe_intvl = intvl;
3398
3399 return ath6kl_wmi_set_txe_notify(ar->wmi, vif->fw_vif_idx,
3400 rate, pkts, intvl);
3401 }
3402
3403 static const struct ieee80211_txrx_stypes
3404 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3405 [NL80211_IFTYPE_STATION] = {
3406 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3407 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3408 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3409 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3410 },
3411 [NL80211_IFTYPE_AP] = {
3412 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3413 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3414 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3415 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3416 },
3417 [NL80211_IFTYPE_P2P_CLIENT] = {
3418 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3419 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3420 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3421 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3422 },
3423 [NL80211_IFTYPE_P2P_GO] = {
3424 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3425 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3426 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3427 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3428 },
3429 };
3430
3431 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3432 .add_virtual_intf = ath6kl_cfg80211_add_iface,
3433 .del_virtual_intf = ath6kl_cfg80211_del_iface,
3434 .change_virtual_intf = ath6kl_cfg80211_change_iface,
3435 .scan = ath6kl_cfg80211_scan,
3436 .connect = ath6kl_cfg80211_connect,
3437 .disconnect = ath6kl_cfg80211_disconnect,
3438 .add_key = ath6kl_cfg80211_add_key,
3439 .get_key = ath6kl_cfg80211_get_key,
3440 .del_key = ath6kl_cfg80211_del_key,
3441 .set_default_key = ath6kl_cfg80211_set_default_key,
3442 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3443 .set_tx_power = ath6kl_cfg80211_set_txpower,
3444 .get_tx_power = ath6kl_cfg80211_get_txpower,
3445 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3446 .join_ibss = ath6kl_cfg80211_join_ibss,
3447 .leave_ibss = ath6kl_cfg80211_leave_ibss,
3448 .get_station = ath6kl_get_station,
3449 .set_pmksa = ath6kl_set_pmksa,
3450 .del_pmksa = ath6kl_del_pmksa,
3451 .flush_pmksa = ath6kl_flush_pmksa,
3452 CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3453 #ifdef CONFIG_PM
3454 .suspend = __ath6kl_cfg80211_suspend,
3455 .resume = __ath6kl_cfg80211_resume,
3456 #endif
3457 .start_ap = ath6kl_start_ap,
3458 .change_beacon = ath6kl_change_beacon,
3459 .stop_ap = ath6kl_stop_ap,
3460 .del_station = ath6kl_del_station,
3461 .change_station = ath6kl_change_station,
3462 .remain_on_channel = ath6kl_remain_on_channel,
3463 .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3464 .mgmt_tx = ath6kl_mgmt_tx,
3465 .mgmt_frame_register = ath6kl_mgmt_frame_register,
3466 .get_antenna = ath6kl_get_antenna,
3467 .sched_scan_start = ath6kl_cfg80211_sscan_start,
3468 .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3469 .set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
3470 .set_cqm_txe_config = ath6kl_cfg80211_set_txe_config,
3471 };
3472
3473 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3474 {
3475 ath6kl_cfg80211_sscan_disable(vif);
3476
3477 switch (vif->sme_state) {
3478 case SME_DISCONNECTED:
3479 break;
3480 case SME_CONNECTING:
3481 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3482 NULL, 0,
3483 WLAN_STATUS_UNSPECIFIED_FAILURE,
3484 GFP_KERNEL);
3485 break;
3486 case SME_CONNECTED:
3487 cfg80211_disconnected(vif->ndev, 0, NULL, 0, true, GFP_KERNEL);
3488 break;
3489 }
3490
3491 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3492 (test_bit(CONNECTED, &vif->flags) ||
3493 test_bit(CONNECT_PEND, &vif->flags)))
3494 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3495
3496 vif->sme_state = SME_DISCONNECTED;
3497 clear_bit(CONNECTED, &vif->flags);
3498 clear_bit(CONNECT_PEND, &vif->flags);
3499
3500 /* Stop netdev queues, needed during recovery */
3501 netif_stop_queue(vif->ndev);
3502 netif_carrier_off(vif->ndev);
3503
3504 /* disable scanning */
3505 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3506 ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3507 0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3508 ath6kl_warn("failed to disable scan during stop\n");
3509
3510 ath6kl_cfg80211_scan_complete_event(vif, true);
3511 }
3512
3513 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3514 {
3515 struct ath6kl_vif *vif;
3516
3517 vif = ath6kl_vif_first(ar);
3518 if (!vif && ar->state != ATH6KL_STATE_RECOVERY) {
3519 /* save the current power mode before enabling power save */
3520 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3521
3522 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3523 ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3524 return;
3525 }
3526
3527 /*
3528 * FIXME: we should take ar->list_lock to protect changes in the
3529 * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3530 * sleeps.
3531 */
3532 list_for_each_entry(vif, &ar->vif_list, list)
3533 ath6kl_cfg80211_stop(vif);
3534 }
3535
3536 static void ath6kl_cfg80211_reg_notify(struct wiphy *wiphy,
3537 struct regulatory_request *request)
3538 {
3539 struct ath6kl *ar = wiphy_priv(wiphy);
3540 u32 rates[NUM_NL80211_BANDS];
3541 int ret, i;
3542
3543 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
3544 "cfg reg_notify %c%c%s%s initiator %d hint_type %d\n",
3545 request->alpha2[0], request->alpha2[1],
3546 request->intersect ? " intersect" : "",
3547 request->processed ? " processed" : "",
3548 request->initiator, request->user_reg_hint_type);
3549
3550 if (request->user_reg_hint_type != NL80211_USER_REG_HINT_CELL_BASE)
3551 return;
3552
3553 ret = ath6kl_wmi_set_regdomain_cmd(ar->wmi, request->alpha2);
3554 if (ret) {
3555 ath6kl_err("failed to set regdomain: %d\n", ret);
3556 return;
3557 }
3558
3559 /*
3560 * Firmware will apply the regdomain change only after a scan is
3561 * issued and it will send a WMI_REGDOMAIN_EVENTID when it has been
3562 * changed.
3563 */
3564
3565 for (i = 0; i < NUM_NL80211_BANDS; i++)
3566 if (wiphy->bands[i])
3567 rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
3568
3569
3570 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, 0, WMI_LONG_SCAN, false,
3571 false, 0, ATH6KL_FG_SCAN_INTERVAL,
3572 0, NULL, false, rates);
3573 if (ret) {
3574 ath6kl_err("failed to start scan for a regdomain change: %d\n",
3575 ret);
3576 return;
3577 }
3578 }
3579
3580 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3581 {
3582 vif->aggr_cntxt = aggr_init(vif);
3583 if (!vif->aggr_cntxt) {
3584 ath6kl_err("failed to initialize aggr\n");
3585 return -ENOMEM;
3586 }
3587
3588 setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3589 (unsigned long) vif->ndev);
3590 setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3591 (unsigned long) vif);
3592
3593 set_bit(WMM_ENABLED, &vif->flags);
3594 spin_lock_init(&vif->if_lock);
3595
3596 INIT_LIST_HEAD(&vif->mc_filter);
3597
3598 return 0;
3599 }
3600
3601 void ath6kl_cfg80211_vif_stop(struct ath6kl_vif *vif, bool wmi_ready)
3602 {
3603 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
3604 bool discon_issued;
3605
3606 netif_stop_queue(vif->ndev);
3607
3608 clear_bit(WLAN_ENABLED, &vif->flags);
3609
3610 if (wmi_ready) {
3611 discon_issued = test_bit(CONNECTED, &vif->flags) ||
3612 test_bit(CONNECT_PEND, &vif->flags);
3613 ath6kl_disconnect(vif);
3614 del_timer(&vif->disconnect_timer);
3615
3616 if (discon_issued)
3617 ath6kl_disconnect_event(vif, DISCONNECT_CMD,
3618 (vif->nw_type & AP_NETWORK) ?
3619 bcast_mac : vif->bssid,
3620 0, NULL, 0);
3621 }
3622
3623 if (vif->scan_req) {
3624 struct cfg80211_scan_info info = {
3625 .aborted = true,
3626 };
3627
3628 cfg80211_scan_done(vif->scan_req, &info);
3629 vif->scan_req = NULL;
3630 }
3631
3632 /* need to clean up enhanced bmiss detection fw state */
3633 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
3634 }
3635
3636 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3637 {
3638 struct ath6kl *ar = vif->ar;
3639 struct ath6kl_mc_filter *mc_filter, *tmp;
3640
3641 aggr_module_destroy(vif->aggr_cntxt);
3642
3643 ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3644
3645 if (vif->nw_type == ADHOC_NETWORK)
3646 ar->ibss_if_active = false;
3647
3648 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3649 list_del(&mc_filter->list);
3650 kfree(mc_filter);
3651 }
3652
3653 unregister_netdevice(vif->ndev);
3654
3655 ar->num_vif--;
3656 }
3657
3658 static const char ath6kl_gstrings_sta_stats[][ETH_GSTRING_LEN] = {
3659 /* Common stats names used by many drivers. */
3660 "tx_pkts_nic", "tx_bytes_nic", "rx_pkts_nic", "rx_bytes_nic",
3661
3662 /* TX stats. */
3663 "d_tx_ucast_pkts", "d_tx_bcast_pkts",
3664 "d_tx_ucast_bytes", "d_tx_bcast_bytes",
3665 "d_tx_rts_ok", "d_tx_error", "d_tx_fail",
3666 "d_tx_retry", "d_tx_multi_retry", "d_tx_rts_fail",
3667 "d_tx_tkip_counter_measures",
3668
3669 /* RX Stats. */
3670 "d_rx_ucast_pkts", "d_rx_ucast_rate", "d_rx_bcast_pkts",
3671 "d_rx_ucast_bytes", "d_rx_bcast_bytes", "d_rx_frag_pkt",
3672 "d_rx_error", "d_rx_crc_err", "d_rx_keycache_miss",
3673 "d_rx_decrypt_crc_err", "d_rx_duplicate_frames",
3674 "d_rx_mic_err", "d_rx_tkip_format_err", "d_rx_ccmp_format_err",
3675 "d_rx_ccmp_replay_err",
3676
3677 /* Misc stats. */
3678 "d_beacon_miss", "d_num_connects", "d_num_disconnects",
3679 "d_beacon_avg_rssi", "d_arp_received", "d_arp_matched",
3680 "d_arp_replied"
3681 };
3682
3683 #define ATH6KL_STATS_LEN ARRAY_SIZE(ath6kl_gstrings_sta_stats)
3684
3685 static int ath6kl_get_sset_count(struct net_device *dev, int sset)
3686 {
3687 int rv = 0;
3688
3689 if (sset == ETH_SS_STATS)
3690 rv += ATH6KL_STATS_LEN;
3691
3692 if (rv == 0)
3693 return -EOPNOTSUPP;
3694 return rv;
3695 }
3696
3697 static void ath6kl_get_stats(struct net_device *dev,
3698 struct ethtool_stats *stats,
3699 u64 *data)
3700 {
3701 struct ath6kl_vif *vif = netdev_priv(dev);
3702 struct ath6kl *ar = vif->ar;
3703 int i = 0;
3704 struct target_stats *tgt_stats;
3705
3706 memset(data, 0, sizeof(u64) * ATH6KL_STATS_LEN);
3707
3708 ath6kl_read_tgt_stats(ar, vif);
3709
3710 tgt_stats = &vif->target_stats;
3711
3712 data[i++] = tgt_stats->tx_ucast_pkt + tgt_stats->tx_bcast_pkt;
3713 data[i++] = tgt_stats->tx_ucast_byte + tgt_stats->tx_bcast_byte;
3714 data[i++] = tgt_stats->rx_ucast_pkt + tgt_stats->rx_bcast_pkt;
3715 data[i++] = tgt_stats->rx_ucast_byte + tgt_stats->rx_bcast_byte;
3716
3717 data[i++] = tgt_stats->tx_ucast_pkt;
3718 data[i++] = tgt_stats->tx_bcast_pkt;
3719 data[i++] = tgt_stats->tx_ucast_byte;
3720 data[i++] = tgt_stats->tx_bcast_byte;
3721 data[i++] = tgt_stats->tx_rts_success_cnt;
3722 data[i++] = tgt_stats->tx_err;
3723 data[i++] = tgt_stats->tx_fail_cnt;
3724 data[i++] = tgt_stats->tx_retry_cnt;
3725 data[i++] = tgt_stats->tx_mult_retry_cnt;
3726 data[i++] = tgt_stats->tx_rts_fail_cnt;
3727 data[i++] = tgt_stats->tkip_cnter_measures_invoked;
3728
3729 data[i++] = tgt_stats->rx_ucast_pkt;
3730 data[i++] = tgt_stats->rx_ucast_rate;
3731 data[i++] = tgt_stats->rx_bcast_pkt;
3732 data[i++] = tgt_stats->rx_ucast_byte;
3733 data[i++] = tgt_stats->rx_bcast_byte;
3734 data[i++] = tgt_stats->rx_frgment_pkt;
3735 data[i++] = tgt_stats->rx_err;
3736 data[i++] = tgt_stats->rx_crc_err;
3737 data[i++] = tgt_stats->rx_key_cache_miss;
3738 data[i++] = tgt_stats->rx_decrypt_err;
3739 data[i++] = tgt_stats->rx_dupl_frame;
3740 data[i++] = tgt_stats->tkip_local_mic_fail;
3741 data[i++] = tgt_stats->tkip_fmt_err;
3742 data[i++] = tgt_stats->ccmp_fmt_err;
3743 data[i++] = tgt_stats->ccmp_replays;
3744
3745 data[i++] = tgt_stats->cs_bmiss_cnt;
3746 data[i++] = tgt_stats->cs_connect_cnt;
3747 data[i++] = tgt_stats->cs_discon_cnt;
3748 data[i++] = tgt_stats->cs_ave_beacon_rssi;
3749 data[i++] = tgt_stats->arp_received;
3750 data[i++] = tgt_stats->arp_matched;
3751 data[i++] = tgt_stats->arp_replied;
3752
3753 if (i != ATH6KL_STATS_LEN) {
3754 WARN_ON_ONCE(1);
3755 ath6kl_err("ethtool stats error, i: %d STATS_LEN: %d\n",
3756 i, (int)ATH6KL_STATS_LEN);
3757 }
3758 }
3759
3760 /* These stats are per NIC, not really per vdev, so we just ignore dev. */
3761 static void ath6kl_get_strings(struct net_device *dev, u32 sset, u8 *data)
3762 {
3763 int sz_sta_stats = 0;
3764
3765 if (sset == ETH_SS_STATS) {
3766 sz_sta_stats = sizeof(ath6kl_gstrings_sta_stats);
3767 memcpy(data, ath6kl_gstrings_sta_stats, sz_sta_stats);
3768 }
3769 }
3770
3771 static const struct ethtool_ops ath6kl_ethtool_ops = {
3772 .get_drvinfo = cfg80211_get_drvinfo,
3773 .get_link = ethtool_op_get_link,
3774 .get_strings = ath6kl_get_strings,
3775 .get_ethtool_stats = ath6kl_get_stats,
3776 .get_sset_count = ath6kl_get_sset_count,
3777 };
3778
3779 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
3780 unsigned char name_assign_type,
3781 enum nl80211_iftype type,
3782 u8 fw_vif_idx, u8 nw_type)
3783 {
3784 struct net_device *ndev;
3785 struct ath6kl_vif *vif;
3786
3787 ndev = alloc_netdev(sizeof(*vif), name, name_assign_type, ether_setup);
3788 if (!ndev)
3789 return NULL;
3790
3791 vif = netdev_priv(ndev);
3792 ndev->ieee80211_ptr = &vif->wdev;
3793 vif->wdev.wiphy = ar->wiphy;
3794 vif->ar = ar;
3795 vif->ndev = ndev;
3796 SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3797 vif->wdev.netdev = ndev;
3798 vif->wdev.iftype = type;
3799 vif->fw_vif_idx = fw_vif_idx;
3800 vif->nw_type = nw_type;
3801 vif->next_mode = nw_type;
3802 vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3803 vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3804 vif->bg_scan_period = 0;
3805 vif->htcap[NL80211_BAND_2GHZ].ht_enable = true;
3806 vif->htcap[NL80211_BAND_5GHZ].ht_enable = true;
3807
3808 memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3809 if (fw_vif_idx != 0) {
3810 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3811 0x2;
3812 if (test_bit(ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR,
3813 ar->fw_capabilities))
3814 ndev->dev_addr[4] ^= 0x80;
3815 }
3816
3817 init_netdev(ndev);
3818
3819 ath6kl_init_control_info(vif);
3820
3821 if (ath6kl_cfg80211_vif_init(vif))
3822 goto err;
3823
3824 netdev_set_default_ethtool_ops(ndev, &ath6kl_ethtool_ops);
3825
3826 if (register_netdevice(ndev))
3827 goto err;
3828
3829 ar->avail_idx_map &= ~BIT(fw_vif_idx);
3830 vif->sme_state = SME_DISCONNECTED;
3831 set_bit(WLAN_ENABLED, &vif->flags);
3832 ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3833
3834 if (type == NL80211_IFTYPE_ADHOC)
3835 ar->ibss_if_active = true;
3836
3837 spin_lock_bh(&ar->list_lock);
3838 list_add_tail(&vif->list, &ar->vif_list);
3839 spin_unlock_bh(&ar->list_lock);
3840
3841 return &vif->wdev;
3842
3843 err:
3844 aggr_module_destroy(vif->aggr_cntxt);
3845 free_netdev(ndev);
3846 return NULL;
3847 }
3848
3849 #ifdef CONFIG_PM
3850 static const struct wiphy_wowlan_support ath6kl_wowlan_support = {
3851 .flags = WIPHY_WOWLAN_MAGIC_PKT |
3852 WIPHY_WOWLAN_DISCONNECT |
3853 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
3854 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
3855 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
3856 WIPHY_WOWLAN_4WAY_HANDSHAKE,
3857 .n_patterns = WOW_MAX_FILTERS_PER_LIST,
3858 .pattern_min_len = 1,
3859 .pattern_max_len = WOW_PATTERN_SIZE,
3860 };
3861 #endif
3862
3863 int ath6kl_cfg80211_init(struct ath6kl *ar)
3864 {
3865 struct wiphy *wiphy = ar->wiphy;
3866 bool band_2gig = false, band_5gig = false, ht = false;
3867 int ret;
3868
3869 wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3870
3871 wiphy->max_remain_on_channel_duration = 5000;
3872
3873 /* set device pointer for wiphy */
3874 set_wiphy_dev(wiphy, ar->dev);
3875
3876 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3877 BIT(NL80211_IFTYPE_ADHOC) |
3878 BIT(NL80211_IFTYPE_AP);
3879 if (ar->p2p) {
3880 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3881 BIT(NL80211_IFTYPE_P2P_CLIENT);
3882 }
3883
3884 if (IS_ENABLED(CONFIG_ATH6KL_REGDOMAIN) &&
3885 test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) {
3886 wiphy->reg_notifier = ath6kl_cfg80211_reg_notify;
3887 ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS;
3888 }
3889
3890 /* max num of ssids that can be probed during scanning */
3891 wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3892
3893 /* max num of ssids that can be matched after scan */
3894 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST,
3895 ar->fw_capabilities))
3896 wiphy->max_match_sets = MAX_PROBED_SSIDS;
3897
3898 wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3899 switch (ar->hw.cap) {
3900 case WMI_11AN_CAP:
3901 ht = true;
3902 case WMI_11A_CAP:
3903 band_5gig = true;
3904 break;
3905 case WMI_11GN_CAP:
3906 ht = true;
3907 case WMI_11G_CAP:
3908 band_2gig = true;
3909 break;
3910 case WMI_11AGN_CAP:
3911 ht = true;
3912 case WMI_11AG_CAP:
3913 band_2gig = true;
3914 band_5gig = true;
3915 break;
3916 default:
3917 ath6kl_err("invalid phy capability!\n");
3918 return -EINVAL;
3919 }
3920
3921 /*
3922 * Even if the fw has HT support, advertise HT cap only when
3923 * the firmware has support to override RSN capability, otherwise
3924 * 4-way handshake would fail.
3925 */
3926 if (!(ht &&
3927 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3928 ar->fw_capabilities))) {
3929 ath6kl_band_2ghz.ht_cap.cap = 0;
3930 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3931 ath6kl_band_5ghz.ht_cap.cap = 0;
3932 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3933
3934 if (ht)
3935 ath6kl_err("Firmware lacks RSN-CAP-OVERRIDE, so HT (802.11n) is disabled.");
3936 }
3937
3938 if (test_bit(ATH6KL_FW_CAPABILITY_64BIT_RATES,
3939 ar->fw_capabilities)) {
3940 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3941 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3942 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3943 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3944 ar->hw.tx_ant = 0x3; /* mask, 2 antenna */
3945 ar->hw.rx_ant = 0x3;
3946 } else {
3947 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3948 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3949 ar->hw.tx_ant = 1;
3950 ar->hw.rx_ant = 1;
3951 }
3952
3953 wiphy->available_antennas_tx = ar->hw.tx_ant;
3954 wiphy->available_antennas_rx = ar->hw.rx_ant;
3955
3956 if (band_2gig)
3957 wiphy->bands[NL80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3958 if (band_5gig)
3959 wiphy->bands[NL80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3960
3961 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3962
3963 wiphy->cipher_suites = cipher_suites;
3964 wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3965
3966 #ifdef CONFIG_PM
3967 wiphy->wowlan = &ath6kl_wowlan_support;
3968 #endif
3969
3970 wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3971
3972 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3973 WIPHY_FLAG_HAVE_AP_SME |
3974 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3975 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3976
3977 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities))
3978 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
3979
3980 if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3981 ar->fw_capabilities))
3982 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
3983
3984 ar->wiphy->probe_resp_offload =
3985 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3986 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3987 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3988
3989 ret = wiphy_register(wiphy);
3990 if (ret < 0) {
3991 ath6kl_err("couldn't register wiphy device\n");
3992 return ret;
3993 }
3994
3995 ar->wiphy_registered = true;
3996
3997 return 0;
3998 }
3999
4000 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
4001 {
4002 wiphy_unregister(ar->wiphy);
4003
4004 ar->wiphy_registered = false;
4005 }
4006
4007 struct ath6kl *ath6kl_cfg80211_create(void)
4008 {
4009 struct ath6kl *ar;
4010 struct wiphy *wiphy;
4011
4012 /* create a new wiphy for use with cfg80211 */
4013 wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
4014
4015 if (!wiphy) {
4016 ath6kl_err("couldn't allocate wiphy device\n");
4017 return NULL;
4018 }
4019
4020 ar = wiphy_priv(wiphy);
4021 ar->wiphy = wiphy;
4022
4023 return ar;
4024 }
4025
4026 /* Note: ar variable must not be accessed after calling this! */
4027 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
4028 {
4029 int i;
4030
4031 for (i = 0; i < AP_MAX_NUM_STA; i++)
4032 kfree(ar->sta_list[i].aggr_conn);
4033
4034 wiphy_free(ar->wiphy);
4035 }
4036