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ath6kl: don't set hi_refclk_hz if hardware version doesn't need it
[deliverable/linux.git] / drivers / net / wireless / ath / ath6kl / cfg80211.c
1 /*
2 * Copyright (c) 2004-2011 Atheros Communications Inc.
3 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
19
20 #include <linux/moduleparam.h>
21 #include <linux/inetdevice.h>
22 #include <linux/export.h>
23
24 #include "core.h"
25 #include "cfg80211.h"
26 #include "debug.h"
27 #include "hif-ops.h"
28 #include "testmode.h"
29
30 #define RATETAB_ENT(_rate, _rateid, _flags) { \
31 .bitrate = (_rate), \
32 .flags = (_flags), \
33 .hw_value = (_rateid), \
34 }
35
36 #define CHAN2G(_channel, _freq, _flags) { \
37 .band = IEEE80211_BAND_2GHZ, \
38 .hw_value = (_channel), \
39 .center_freq = (_freq), \
40 .flags = (_flags), \
41 .max_antenna_gain = 0, \
42 .max_power = 30, \
43 }
44
45 #define CHAN5G(_channel, _flags) { \
46 .band = IEEE80211_BAND_5GHZ, \
47 .hw_value = (_channel), \
48 .center_freq = 5000 + (5 * (_channel)), \
49 .flags = (_flags), \
50 .max_antenna_gain = 0, \
51 .max_power = 30, \
52 }
53
54 #define DEFAULT_BG_SCAN_PERIOD 60
55
56 struct ath6kl_cfg80211_match_probe_ssid {
57 struct cfg80211_ssid ssid;
58 u8 flag;
59 };
60
61 static struct ieee80211_rate ath6kl_rates[] = {
62 RATETAB_ENT(10, 0x1, 0),
63 RATETAB_ENT(20, 0x2, 0),
64 RATETAB_ENT(55, 0x4, 0),
65 RATETAB_ENT(110, 0x8, 0),
66 RATETAB_ENT(60, 0x10, 0),
67 RATETAB_ENT(90, 0x20, 0),
68 RATETAB_ENT(120, 0x40, 0),
69 RATETAB_ENT(180, 0x80, 0),
70 RATETAB_ENT(240, 0x100, 0),
71 RATETAB_ENT(360, 0x200, 0),
72 RATETAB_ENT(480, 0x400, 0),
73 RATETAB_ENT(540, 0x800, 0),
74 };
75
76 #define ath6kl_a_rates (ath6kl_rates + 4)
77 #define ath6kl_a_rates_size 8
78 #define ath6kl_g_rates (ath6kl_rates + 0)
79 #define ath6kl_g_rates_size 12
80
81 #define ath6kl_g_htcap IEEE80211_HT_CAP_SGI_20
82 #define ath6kl_a_htcap (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \
83 IEEE80211_HT_CAP_SGI_20 | \
84 IEEE80211_HT_CAP_SGI_40)
85
86 static struct ieee80211_channel ath6kl_2ghz_channels[] = {
87 CHAN2G(1, 2412, 0),
88 CHAN2G(2, 2417, 0),
89 CHAN2G(3, 2422, 0),
90 CHAN2G(4, 2427, 0),
91 CHAN2G(5, 2432, 0),
92 CHAN2G(6, 2437, 0),
93 CHAN2G(7, 2442, 0),
94 CHAN2G(8, 2447, 0),
95 CHAN2G(9, 2452, 0),
96 CHAN2G(10, 2457, 0),
97 CHAN2G(11, 2462, 0),
98 CHAN2G(12, 2467, 0),
99 CHAN2G(13, 2472, 0),
100 CHAN2G(14, 2484, 0),
101 };
102
103 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = {
104 CHAN5G(34, 0), CHAN5G(36, 0),
105 CHAN5G(38, 0), CHAN5G(40, 0),
106 CHAN5G(42, 0), CHAN5G(44, 0),
107 CHAN5G(46, 0), CHAN5G(48, 0),
108 CHAN5G(52, 0), CHAN5G(56, 0),
109 CHAN5G(60, 0), CHAN5G(64, 0),
110 CHAN5G(100, 0), CHAN5G(104, 0),
111 CHAN5G(108, 0), CHAN5G(112, 0),
112 CHAN5G(116, 0), CHAN5G(120, 0),
113 CHAN5G(124, 0), CHAN5G(128, 0),
114 CHAN5G(132, 0), CHAN5G(136, 0),
115 CHAN5G(140, 0), CHAN5G(149, 0),
116 CHAN5G(153, 0), CHAN5G(157, 0),
117 CHAN5G(161, 0), CHAN5G(165, 0),
118 CHAN5G(184, 0), CHAN5G(188, 0),
119 CHAN5G(192, 0), CHAN5G(196, 0),
120 CHAN5G(200, 0), CHAN5G(204, 0),
121 CHAN5G(208, 0), CHAN5G(212, 0),
122 CHAN5G(216, 0),
123 };
124
125 static struct ieee80211_supported_band ath6kl_band_2ghz = {
126 .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels),
127 .channels = ath6kl_2ghz_channels,
128 .n_bitrates = ath6kl_g_rates_size,
129 .bitrates = ath6kl_g_rates,
130 .ht_cap.cap = ath6kl_g_htcap,
131 .ht_cap.ht_supported = true,
132 };
133
134 static struct ieee80211_supported_band ath6kl_band_5ghz = {
135 .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels),
136 .channels = ath6kl_5ghz_a_channels,
137 .n_bitrates = ath6kl_a_rates_size,
138 .bitrates = ath6kl_a_rates,
139 .ht_cap.cap = ath6kl_a_htcap,
140 .ht_cap.ht_supported = true,
141 };
142
143 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */
144
145 /* returns true if scheduled scan was stopped */
146 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif)
147 {
148 struct ath6kl *ar = vif->ar;
149
150 if (!test_and_clear_bit(SCHED_SCANNING, &vif->flags))
151 return false;
152
153 del_timer_sync(&vif->sched_scan_timer);
154
155 if (ar->state == ATH6KL_STATE_RECOVERY)
156 return true;
157
158 ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, false);
159
160 return true;
161 }
162
163 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif)
164 {
165 struct ath6kl *ar = vif->ar;
166 bool stopped;
167
168 stopped = __ath6kl_cfg80211_sscan_stop(vif);
169
170 if (!stopped)
171 return;
172
173 cfg80211_sched_scan_stopped(ar->wiphy);
174 }
175
176 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif,
177 enum nl80211_wpa_versions wpa_version)
178 {
179 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version);
180
181 if (!wpa_version) {
182 vif->auth_mode = NONE_AUTH;
183 } else if (wpa_version & NL80211_WPA_VERSION_2) {
184 vif->auth_mode = WPA2_AUTH;
185 } else if (wpa_version & NL80211_WPA_VERSION_1) {
186 vif->auth_mode = WPA_AUTH;
187 } else {
188 ath6kl_err("%s: %u not supported\n", __func__, wpa_version);
189 return -ENOTSUPP;
190 }
191
192 return 0;
193 }
194
195 static int ath6kl_set_auth_type(struct ath6kl_vif *vif,
196 enum nl80211_auth_type auth_type)
197 {
198 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type);
199
200 switch (auth_type) {
201 case NL80211_AUTHTYPE_OPEN_SYSTEM:
202 vif->dot11_auth_mode = OPEN_AUTH;
203 break;
204 case NL80211_AUTHTYPE_SHARED_KEY:
205 vif->dot11_auth_mode = SHARED_AUTH;
206 break;
207 case NL80211_AUTHTYPE_NETWORK_EAP:
208 vif->dot11_auth_mode = LEAP_AUTH;
209 break;
210
211 case NL80211_AUTHTYPE_AUTOMATIC:
212 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH;
213 break;
214
215 default:
216 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type);
217 return -ENOTSUPP;
218 }
219
220 return 0;
221 }
222
223 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast)
224 {
225 u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto;
226 u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len :
227 &vif->grp_crypto_len;
228
229 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n",
230 __func__, cipher, ucast);
231
232 switch (cipher) {
233 case 0:
234 /* our own hack to use value 0 as no crypto used */
235 *ar_cipher = NONE_CRYPT;
236 *ar_cipher_len = 0;
237 break;
238 case WLAN_CIPHER_SUITE_WEP40:
239 *ar_cipher = WEP_CRYPT;
240 *ar_cipher_len = 5;
241 break;
242 case WLAN_CIPHER_SUITE_WEP104:
243 *ar_cipher = WEP_CRYPT;
244 *ar_cipher_len = 13;
245 break;
246 case WLAN_CIPHER_SUITE_TKIP:
247 *ar_cipher = TKIP_CRYPT;
248 *ar_cipher_len = 0;
249 break;
250 case WLAN_CIPHER_SUITE_CCMP:
251 *ar_cipher = AES_CRYPT;
252 *ar_cipher_len = 0;
253 break;
254 case WLAN_CIPHER_SUITE_SMS4:
255 *ar_cipher = WAPI_CRYPT;
256 *ar_cipher_len = 0;
257 break;
258 default:
259 ath6kl_err("cipher 0x%x not supported\n", cipher);
260 return -ENOTSUPP;
261 }
262
263 return 0;
264 }
265
266 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt)
267 {
268 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt);
269
270 if (key_mgmt == WLAN_AKM_SUITE_PSK) {
271 if (vif->auth_mode == WPA_AUTH)
272 vif->auth_mode = WPA_PSK_AUTH;
273 else if (vif->auth_mode == WPA2_AUTH)
274 vif->auth_mode = WPA2_PSK_AUTH;
275 } else if (key_mgmt == 0x00409600) {
276 if (vif->auth_mode == WPA_AUTH)
277 vif->auth_mode = WPA_AUTH_CCKM;
278 else if (vif->auth_mode == WPA2_AUTH)
279 vif->auth_mode = WPA2_AUTH_CCKM;
280 } else if (key_mgmt != WLAN_AKM_SUITE_8021X) {
281 vif->auth_mode = NONE_AUTH;
282 }
283 }
284
285 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif)
286 {
287 struct ath6kl *ar = vif->ar;
288
289 if (!test_bit(WMI_READY, &ar->flag)) {
290 ath6kl_err("wmi is not ready\n");
291 return false;
292 }
293
294 if (!test_bit(WLAN_ENABLED, &vif->flags)) {
295 ath6kl_err("wlan disabled\n");
296 return false;
297 }
298
299 return true;
300 }
301
302 static bool ath6kl_is_wpa_ie(const u8 *pos)
303 {
304 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
305 pos[2] == 0x00 && pos[3] == 0x50 &&
306 pos[4] == 0xf2 && pos[5] == 0x01;
307 }
308
309 static bool ath6kl_is_rsn_ie(const u8 *pos)
310 {
311 return pos[0] == WLAN_EID_RSN;
312 }
313
314 static bool ath6kl_is_wps_ie(const u8 *pos)
315 {
316 return (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
317 pos[1] >= 4 &&
318 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 &&
319 pos[5] == 0x04);
320 }
321
322 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies,
323 size_t ies_len)
324 {
325 struct ath6kl *ar = vif->ar;
326 const u8 *pos;
327 u8 *buf = NULL;
328 size_t len = 0;
329 int ret;
330
331 /*
332 * Clear previously set flag
333 */
334
335 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
336
337 /*
338 * Filter out RSN/WPA IE(s)
339 */
340
341 if (ies && ies_len) {
342 buf = kmalloc(ies_len, GFP_KERNEL);
343 if (buf == NULL)
344 return -ENOMEM;
345 pos = ies;
346
347 while (pos + 1 < ies + ies_len) {
348 if (pos + 2 + pos[1] > ies + ies_len)
349 break;
350 if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) {
351 memcpy(buf + len, pos, 2 + pos[1]);
352 len += 2 + pos[1];
353 }
354
355 if (ath6kl_is_wps_ie(pos))
356 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG;
357
358 pos += 2 + pos[1];
359 }
360 }
361
362 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
363 WMI_FRAME_ASSOC_REQ, buf, len);
364 kfree(buf);
365 return ret;
366 }
367
368 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type)
369 {
370 switch (type) {
371 case NL80211_IFTYPE_STATION:
372 case NL80211_IFTYPE_P2P_CLIENT:
373 *nw_type = INFRA_NETWORK;
374 break;
375 case NL80211_IFTYPE_ADHOC:
376 *nw_type = ADHOC_NETWORK;
377 break;
378 case NL80211_IFTYPE_AP:
379 case NL80211_IFTYPE_P2P_GO:
380 *nw_type = AP_NETWORK;
381 break;
382 default:
383 ath6kl_err("invalid interface type %u\n", type);
384 return -ENOTSUPP;
385 }
386
387 return 0;
388 }
389
390 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type,
391 u8 *if_idx, u8 *nw_type)
392 {
393 int i;
394
395 if (ath6kl_nliftype_to_drv_iftype(type, nw_type))
396 return false;
397
398 if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) &&
399 ar->num_vif))
400 return false;
401
402 if (type == NL80211_IFTYPE_STATION ||
403 type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
404 for (i = 0; i < ar->vif_max; i++) {
405 if ((ar->avail_idx_map) & BIT(i)) {
406 *if_idx = i;
407 return true;
408 }
409 }
410 }
411
412 if (type == NL80211_IFTYPE_P2P_CLIENT ||
413 type == NL80211_IFTYPE_P2P_GO) {
414 for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
415 if ((ar->avail_idx_map) & BIT(i)) {
416 *if_idx = i;
417 return true;
418 }
419 }
420 }
421
422 return false;
423 }
424
425 static bool ath6kl_is_tx_pending(struct ath6kl *ar)
426 {
427 return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0;
428 }
429
430 static void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif,
431 bool enable)
432 {
433 int err;
434
435 if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
436 return;
437
438 if (vif->nw_type != INFRA_NETWORK)
439 return;
440
441 if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
442 vif->ar->fw_capabilities))
443 return;
444
445 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
446 enable ? "enable" : "disable");
447
448 err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
449 vif->fw_vif_idx, enable);
450 if (err)
451 ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
452 enable ? "enable" : "disable", err);
453 }
454
455 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
456 struct cfg80211_connect_params *sme)
457 {
458 struct ath6kl *ar = ath6kl_priv(dev);
459 struct ath6kl_vif *vif = netdev_priv(dev);
460 int status;
461 u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
462 u16 interval;
463
464 ath6kl_cfg80211_sscan_disable(vif);
465
466 vif->sme_state = SME_CONNECTING;
467
468 if (!ath6kl_cfg80211_ready(vif))
469 return -EIO;
470
471 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
472 ath6kl_err("destroy in progress\n");
473 return -EBUSY;
474 }
475
476 if (test_bit(SKIP_SCAN, &ar->flag) &&
477 ((sme->channel && sme->channel->center_freq == 0) ||
478 (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
479 ath6kl_err("SkipScan: channel or bssid invalid\n");
480 return -EINVAL;
481 }
482
483 if (down_interruptible(&ar->sem)) {
484 ath6kl_err("busy, couldn't get access\n");
485 return -ERESTARTSYS;
486 }
487
488 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
489 ath6kl_err("busy, destroy in progress\n");
490 up(&ar->sem);
491 return -EBUSY;
492 }
493
494 if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
495 /*
496 * sleep until the command queue drains
497 */
498 wait_event_interruptible_timeout(ar->event_wq,
499 ath6kl_is_tx_pending(ar),
500 WMI_TIMEOUT);
501 if (signal_pending(current)) {
502 ath6kl_err("cmd queue drain timeout\n");
503 up(&ar->sem);
504 return -EINTR;
505 }
506 }
507
508 status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
509 if (status) {
510 up(&ar->sem);
511 return status;
512 }
513
514 if (sme->ie == NULL || sme->ie_len == 0)
515 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
516
517 if (test_bit(CONNECTED, &vif->flags) &&
518 vif->ssid_len == sme->ssid_len &&
519 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
520 vif->reconnect_flag = true;
521 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx,
522 vif->req_bssid,
523 vif->ch_hint);
524
525 up(&ar->sem);
526 if (status) {
527 ath6kl_err("wmi_reconnect_cmd failed\n");
528 return -EIO;
529 }
530 return 0;
531 } else if (vif->ssid_len == sme->ssid_len &&
532 !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
533 ath6kl_disconnect(vif);
534 }
535
536 memset(vif->ssid, 0, sizeof(vif->ssid));
537 vif->ssid_len = sme->ssid_len;
538 memcpy(vif->ssid, sme->ssid, sme->ssid_len);
539
540 if (sme->channel)
541 vif->ch_hint = sme->channel->center_freq;
542
543 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
544 if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
545 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid));
546
547 ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions);
548
549 status = ath6kl_set_auth_type(vif, sme->auth_type);
550 if (status) {
551 up(&ar->sem);
552 return status;
553 }
554
555 if (sme->crypto.n_ciphers_pairwise)
556 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true);
557 else
558 ath6kl_set_cipher(vif, 0, true);
559
560 ath6kl_set_cipher(vif, sme->crypto.cipher_group, false);
561
562 if (sme->crypto.n_akm_suites)
563 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]);
564
565 if ((sme->key_len) &&
566 (vif->auth_mode == NONE_AUTH) &&
567 (vif->prwise_crypto == WEP_CRYPT)) {
568 struct ath6kl_key *key = NULL;
569
570 if (sme->key_idx > WMI_MAX_KEY_INDEX) {
571 ath6kl_err("key index %d out of bounds\n",
572 sme->key_idx);
573 up(&ar->sem);
574 return -ENOENT;
575 }
576
577 key = &vif->keys[sme->key_idx];
578 key->key_len = sme->key_len;
579 memcpy(key->key, sme->key, key->key_len);
580 key->cipher = vif->prwise_crypto;
581 vif->def_txkey_index = sme->key_idx;
582
583 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx,
584 vif->prwise_crypto,
585 GROUP_USAGE | TX_USAGE,
586 key->key_len,
587 NULL, 0,
588 key->key, KEY_OP_INIT_VAL, NULL,
589 NO_SYNC_WMIFLAG);
590 }
591
592 if (!ar->usr_bss_filter) {
593 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
594 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
595 ALL_BSS_FILTER, 0) != 0) {
596 ath6kl_err("couldn't set bss filtering\n");
597 up(&ar->sem);
598 return -EIO;
599 }
600 }
601
602 vif->nw_type = vif->next_mode;
603
604 /* enable enhanced bmiss detection if applicable */
605 ath6kl_cfg80211_sta_bmiss_enhance(vif, true);
606
607 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
608 nw_subtype = SUBTYPE_P2PCLIENT;
609
610 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
611 "%s: connect called with authmode %d dot11 auth %d"
612 " PW crypto %d PW crypto len %d GRP crypto %d"
613 " GRP crypto len %d channel hint %u\n",
614 __func__,
615 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
616 vif->prwise_crypto_len, vif->grp_crypto,
617 vif->grp_crypto_len, vif->ch_hint);
618
619 vif->reconnect_flag = 0;
620
621 if (vif->nw_type == INFRA_NETWORK) {
622 interval = max_t(u16, vif->listen_intvl_t,
623 ATH6KL_MAX_WOW_LISTEN_INTL);
624 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
625 interval,
626 0);
627 if (status) {
628 ath6kl_err("couldn't set listen intervel\n");
629 up(&ar->sem);
630 return status;
631 }
632 }
633
634 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
635 vif->dot11_auth_mode, vif->auth_mode,
636 vif->prwise_crypto,
637 vif->prwise_crypto_len,
638 vif->grp_crypto, vif->grp_crypto_len,
639 vif->ssid_len, vif->ssid,
640 vif->req_bssid, vif->ch_hint,
641 ar->connect_ctrl_flags, nw_subtype);
642
643 if (sme->bg_scan_period == 0) {
644 /* disable background scan if period is 0 */
645 sme->bg_scan_period = 0xffff;
646 } else if (sme->bg_scan_period == -1) {
647 /* configure default value if not specified */
648 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
649 }
650
651 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
652 sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
653
654 up(&ar->sem);
655
656 if (status == -EINVAL) {
657 memset(vif->ssid, 0, sizeof(vif->ssid));
658 vif->ssid_len = 0;
659 ath6kl_err("invalid request\n");
660 return -ENOENT;
661 } else if (status) {
662 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
663 return -EIO;
664 }
665
666 if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
667 ((vif->auth_mode == WPA_PSK_AUTH) ||
668 (vif->auth_mode == WPA2_PSK_AUTH))) {
669 mod_timer(&vif->disconnect_timer,
670 jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
671 }
672
673 ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
674 set_bit(CONNECT_PEND, &vif->flags);
675
676 return 0;
677 }
678
679 static struct cfg80211_bss *
680 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif,
681 enum network_type nw_type,
682 const u8 *bssid,
683 struct ieee80211_channel *chan,
684 const u8 *beacon_ie,
685 size_t beacon_ie_len)
686 {
687 struct ath6kl *ar = vif->ar;
688 struct cfg80211_bss *bss;
689 u16 cap_mask, cap_val;
690 u8 *ie;
691
692 if (nw_type & ADHOC_NETWORK) {
693 cap_mask = WLAN_CAPABILITY_IBSS;
694 cap_val = WLAN_CAPABILITY_IBSS;
695 } else {
696 cap_mask = WLAN_CAPABILITY_ESS;
697 cap_val = WLAN_CAPABILITY_ESS;
698 }
699
700 bss = cfg80211_get_bss(ar->wiphy, chan, bssid,
701 vif->ssid, vif->ssid_len,
702 cap_mask, cap_val);
703 if (bss == NULL) {
704 /*
705 * Since cfg80211 may not yet know about the BSS,
706 * generate a partial entry until the first BSS info
707 * event becomes available.
708 *
709 * Prepend SSID element since it is not included in the Beacon
710 * IEs from the target.
711 */
712 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL);
713 if (ie == NULL)
714 return NULL;
715 ie[0] = WLAN_EID_SSID;
716 ie[1] = vif->ssid_len;
717 memcpy(ie + 2, vif->ssid, vif->ssid_len);
718 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len);
719 bss = cfg80211_inform_bss(ar->wiphy, chan,
720 bssid, 0, cap_val, 100,
721 ie, 2 + vif->ssid_len + beacon_ie_len,
722 0, GFP_KERNEL);
723 if (bss)
724 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
725 "added bss %pM to cfg80211\n", bssid);
726 kfree(ie);
727 } else {
728 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n");
729 }
730
731 return bss;
732 }
733
734 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
735 u8 *bssid, u16 listen_intvl,
736 u16 beacon_intvl,
737 enum network_type nw_type,
738 u8 beacon_ie_len, u8 assoc_req_len,
739 u8 assoc_resp_len, u8 *assoc_info)
740 {
741 struct ieee80211_channel *chan;
742 struct ath6kl *ar = vif->ar;
743 struct cfg80211_bss *bss;
744
745 /* capinfo + listen interval */
746 u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
747
748 /* capinfo + status code + associd */
749 u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
750
751 u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
752 u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
753 assoc_resp_ie_offset;
754
755 assoc_req_len -= assoc_req_ie_offset;
756 assoc_resp_len -= assoc_resp_ie_offset;
757
758 /*
759 * Store Beacon interval here; DTIM period will be available only once
760 * a Beacon frame from the AP is seen.
761 */
762 vif->assoc_bss_beacon_int = beacon_intvl;
763 clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
764
765 if (nw_type & ADHOC_NETWORK) {
766 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
767 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
768 "%s: ath6k not in ibss mode\n", __func__);
769 return;
770 }
771 }
772
773 if (nw_type & INFRA_NETWORK) {
774 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
775 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
776 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
777 "%s: ath6k not in station mode\n", __func__);
778 return;
779 }
780 }
781
782 chan = ieee80211_get_channel(ar->wiphy, (int) channel);
783
784 bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
785 assoc_info, beacon_ie_len);
786 if (!bss) {
787 ath6kl_err("could not add cfg80211 bss entry\n");
788 return;
789 }
790
791 if (nw_type & ADHOC_NETWORK) {
792 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
793 nw_type & ADHOC_CREATOR ? "creator" : "joiner");
794 cfg80211_ibss_joined(vif->ndev, bssid, chan, GFP_KERNEL);
795 cfg80211_put_bss(ar->wiphy, bss);
796 return;
797 }
798
799 if (vif->sme_state == SME_CONNECTING) {
800 /* inform connect result to cfg80211 */
801 vif->sme_state = SME_CONNECTED;
802 cfg80211_connect_result(vif->ndev, bssid,
803 assoc_req_ie, assoc_req_len,
804 assoc_resp_ie, assoc_resp_len,
805 WLAN_STATUS_SUCCESS, GFP_KERNEL);
806 cfg80211_put_bss(ar->wiphy, bss);
807 } else if (vif->sme_state == SME_CONNECTED) {
808 /* inform roam event to cfg80211 */
809 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len,
810 assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
811 }
812 }
813
814 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
815 struct net_device *dev, u16 reason_code)
816 {
817 struct ath6kl *ar = ath6kl_priv(dev);
818 struct ath6kl_vif *vif = netdev_priv(dev);
819
820 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
821 reason_code);
822
823 ath6kl_cfg80211_sscan_disable(vif);
824
825 if (!ath6kl_cfg80211_ready(vif))
826 return -EIO;
827
828 if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
829 ath6kl_err("busy, destroy in progress\n");
830 return -EBUSY;
831 }
832
833 if (down_interruptible(&ar->sem)) {
834 ath6kl_err("busy, couldn't get access\n");
835 return -ERESTARTSYS;
836 }
837
838 vif->reconnect_flag = 0;
839 ath6kl_disconnect(vif);
840 memset(vif->ssid, 0, sizeof(vif->ssid));
841 vif->ssid_len = 0;
842
843 if (!test_bit(SKIP_SCAN, &ar->flag))
844 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
845
846 up(&ar->sem);
847
848 vif->sme_state = SME_DISCONNECTED;
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 cfg80211_scan_done(vif->scan_req, true);
861 vif->scan_req = NULL;
862 }
863
864 if (vif->nw_type & ADHOC_NETWORK) {
865 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC)
866 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
867 "%s: ath6k not in ibss mode\n", __func__);
868 return;
869 }
870
871 if (vif->nw_type & INFRA_NETWORK) {
872 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
873 vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
874 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
875 "%s: ath6k not in station mode\n", __func__);
876 return;
877 }
878 }
879
880 clear_bit(CONNECT_PEND, &vif->flags);
881
882 if (vif->sme_state == SME_CONNECTING) {
883 cfg80211_connect_result(vif->ndev,
884 bssid, NULL, 0,
885 NULL, 0,
886 WLAN_STATUS_UNSPECIFIED_FAILURE,
887 GFP_KERNEL);
888 } else if (vif->sme_state == SME_CONNECTED) {
889 cfg80211_disconnected(vif->ndev, proto_reason,
890 NULL, 0, GFP_KERNEL);
891 }
892
893 vif->sme_state = SME_DISCONNECTED;
894
895 /*
896 * Send a disconnect command to target when a disconnect event is
897 * received with reason code other than 3 (DISCONNECT_CMD - disconnect
898 * request from host) to make the firmware stop trying to connect even
899 * after giving disconnect event. There will be one more disconnect
900 * event for this disconnect command with reason code DISCONNECT_CMD
901 * which won't be notified to cfg80211.
902 */
903 if (reason != DISCONNECT_CMD)
904 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
905 }
906
907 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
908 struct ath6kl_vif *vif,
909 struct cfg80211_ssid *ssids, int n_ssids,
910 struct cfg80211_match_set *match_set,
911 int n_match_ssid)
912 {
913 u8 i, j, index_to_add, ssid_found = false;
914 struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS];
915
916 memset(ssid_list, 0, sizeof(ssid_list));
917
918 if (n_ssids > MAX_PROBED_SSIDS ||
919 n_match_ssid > MAX_PROBED_SSIDS)
920 return -EINVAL;
921
922 for (i = 0; i < n_ssids; i++) {
923 memcpy(ssid_list[i].ssid.ssid,
924 ssids[i].ssid,
925 ssids[i].ssid_len);
926 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len;
927
928 if (ssids[i].ssid_len)
929 ssid_list[i].flag = SPECIFIC_SSID_FLAG;
930 else
931 ssid_list[i].flag = ANY_SSID_FLAG;
932
933 if (n_match_ssid == 0)
934 ssid_list[i].flag |= MATCH_SSID_FLAG;
935 }
936
937 index_to_add = i;
938
939 for (i = 0; i < n_match_ssid; i++) {
940 ssid_found = false;
941
942 for (j = 0; j < n_ssids; j++) {
943 if ((match_set[i].ssid.ssid_len ==
944 ssid_list[j].ssid.ssid_len) &&
945 (!memcmp(ssid_list[j].ssid.ssid,
946 match_set[i].ssid.ssid,
947 match_set[i].ssid.ssid_len))) {
948 ssid_list[j].flag |= MATCH_SSID_FLAG;
949 ssid_found = true;
950 break;
951 }
952 }
953
954 if (ssid_found)
955 continue;
956
957 if (index_to_add >= MAX_PROBED_SSIDS)
958 continue;
959
960 ssid_list[index_to_add].ssid.ssid_len =
961 match_set[i].ssid.ssid_len;
962 memcpy(ssid_list[index_to_add].ssid.ssid,
963 match_set[i].ssid.ssid,
964 match_set[i].ssid.ssid_len);
965 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG;
966 index_to_add++;
967 }
968
969 for (i = 0; i < index_to_add; i++) {
970 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
971 ssid_list[i].flag,
972 ssid_list[i].ssid.ssid_len,
973 ssid_list[i].ssid.ssid);
974 }
975
976 /* Make sure no old entries are left behind */
977 for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) {
978 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
979 DISABLE_SSID_FLAG, 0, NULL);
980 }
981
982 return 0;
983 }
984
985 static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
986 struct cfg80211_scan_request *request)
987 {
988 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
989 struct ath6kl *ar = ath6kl_priv(vif->ndev);
990 s8 n_channels = 0;
991 u16 *channels = NULL;
992 int ret = 0;
993 u32 force_fg_scan = 0;
994
995 if (!ath6kl_cfg80211_ready(vif))
996 return -EIO;
997
998 ath6kl_cfg80211_sscan_disable(vif);
999
1000 if (!ar->usr_bss_filter) {
1001 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1002 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1003 ALL_BSS_FILTER, 0);
1004 if (ret) {
1005 ath6kl_err("couldn't set bss filtering\n");
1006 return ret;
1007 }
1008 }
1009
1010 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
1011 request->n_ssids, NULL, 0);
1012 if (ret < 0)
1013 return ret;
1014
1015 /* this also clears IE in fw if it's not set */
1016 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
1017 WMI_FRAME_PROBE_REQ,
1018 request->ie, request->ie_len);
1019 if (ret) {
1020 ath6kl_err("failed to set Probe Request appie for scan\n");
1021 return ret;
1022 }
1023
1024 /*
1025 * Scan only the requested channels if the request specifies a set of
1026 * channels. If the list is longer than the target supports, do not
1027 * configure the list and instead, scan all available channels.
1028 */
1029 if (request->n_channels > 0 &&
1030 request->n_channels <= WMI_MAX_CHANNELS) {
1031 u8 i;
1032
1033 n_channels = request->n_channels;
1034
1035 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
1036 if (channels == NULL) {
1037 ath6kl_warn("failed to set scan channels, scan all channels");
1038 n_channels = 0;
1039 }
1040
1041 for (i = 0; i < n_channels; i++)
1042 channels[i] = request->channels[i]->center_freq;
1043 }
1044
1045 if (test_bit(CONNECTED, &vif->flags))
1046 force_fg_scan = 1;
1047
1048 vif->scan_req = request;
1049
1050 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
1051 WMI_LONG_SCAN, force_fg_scan,
1052 false, 0,
1053 ATH6KL_FG_SCAN_INTERVAL,
1054 n_channels, channels,
1055 request->no_cck,
1056 request->rates);
1057 if (ret) {
1058 ath6kl_err("failed to start scan: %d\n", ret);
1059 vif->scan_req = NULL;
1060 }
1061
1062 kfree(channels);
1063
1064 return ret;
1065 }
1066
1067 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1068 {
1069 struct ath6kl *ar = vif->ar;
1070 int i;
1071
1072 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1073 aborted ? " aborted" : "");
1074
1075 if (!vif->scan_req)
1076 return;
1077
1078 if (aborted)
1079 goto out;
1080
1081 if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1082 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1083 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1084 i + 1, DISABLE_SSID_FLAG,
1085 0, NULL);
1086 }
1087 }
1088
1089 out:
1090 cfg80211_scan_done(vif->scan_req, aborted);
1091 vif->scan_req = NULL;
1092 }
1093
1094 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1095 enum wmi_phy_mode mode)
1096 {
1097 struct cfg80211_chan_def chandef;
1098
1099 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1100 "channel switch notify nw_type %d freq %d mode %d\n",
1101 vif->nw_type, freq, mode);
1102
1103 cfg80211_chandef_create(&chandef,
1104 ieee80211_get_channel(vif->ar->wiphy, freq),
1105 (mode == WMI_11G_HT20) ?
1106 NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT);
1107
1108 mutex_lock(&vif->wdev.mtx);
1109 cfg80211_ch_switch_notify(vif->ndev, &chandef);
1110 mutex_unlock(&vif->wdev.mtx);
1111 }
1112
1113 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1114 u8 key_index, bool pairwise,
1115 const u8 *mac_addr,
1116 struct key_params *params)
1117 {
1118 struct ath6kl *ar = ath6kl_priv(ndev);
1119 struct ath6kl_vif *vif = netdev_priv(ndev);
1120 struct ath6kl_key *key = NULL;
1121 int seq_len;
1122 u8 key_usage;
1123 u8 key_type;
1124
1125 if (!ath6kl_cfg80211_ready(vif))
1126 return -EIO;
1127
1128 if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1129 if (params->key_len != WMI_KRK_LEN)
1130 return -EINVAL;
1131 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1132 params->key);
1133 }
1134
1135 if (key_index > WMI_MAX_KEY_INDEX) {
1136 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1137 "%s: key index %d out of bounds\n", __func__,
1138 key_index);
1139 return -ENOENT;
1140 }
1141
1142 key = &vif->keys[key_index];
1143 memset(key, 0, sizeof(struct ath6kl_key));
1144
1145 if (pairwise)
1146 key_usage = PAIRWISE_USAGE;
1147 else
1148 key_usage = GROUP_USAGE;
1149
1150 seq_len = params->seq_len;
1151 if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1152 seq_len > ATH6KL_KEY_SEQ_LEN) {
1153 /* Only first half of the WPI PN is configured */
1154 seq_len = ATH6KL_KEY_SEQ_LEN;
1155 }
1156 if (params->key_len > WLAN_MAX_KEY_LEN ||
1157 seq_len > sizeof(key->seq))
1158 return -EINVAL;
1159
1160 key->key_len = params->key_len;
1161 memcpy(key->key, params->key, key->key_len);
1162 key->seq_len = seq_len;
1163 memcpy(key->seq, params->seq, key->seq_len);
1164 key->cipher = params->cipher;
1165
1166 switch (key->cipher) {
1167 case WLAN_CIPHER_SUITE_WEP40:
1168 case WLAN_CIPHER_SUITE_WEP104:
1169 key_type = WEP_CRYPT;
1170 break;
1171
1172 case WLAN_CIPHER_SUITE_TKIP:
1173 key_type = TKIP_CRYPT;
1174 break;
1175
1176 case WLAN_CIPHER_SUITE_CCMP:
1177 key_type = AES_CRYPT;
1178 break;
1179 case WLAN_CIPHER_SUITE_SMS4:
1180 key_type = WAPI_CRYPT;
1181 break;
1182
1183 default:
1184 return -ENOTSUPP;
1185 }
1186
1187 if (((vif->auth_mode == WPA_PSK_AUTH) ||
1188 (vif->auth_mode == WPA2_PSK_AUTH)) &&
1189 (key_usage & GROUP_USAGE))
1190 del_timer(&vif->disconnect_timer);
1191
1192 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1193 "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1194 __func__, key_index, key->key_len, key_type,
1195 key_usage, key->seq_len);
1196
1197 if (vif->nw_type == AP_NETWORK && !pairwise &&
1198 (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1199 key_type == WAPI_CRYPT)) {
1200 ar->ap_mode_bkey.valid = true;
1201 ar->ap_mode_bkey.key_index = key_index;
1202 ar->ap_mode_bkey.key_type = key_type;
1203 ar->ap_mode_bkey.key_len = key->key_len;
1204 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1205 if (!test_bit(CONNECTED, &vif->flags)) {
1206 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1207 "Delay initial group key configuration until AP mode has been started\n");
1208 /*
1209 * The key will be set in ath6kl_connect_ap_mode() once
1210 * the connected event is received from the target.
1211 */
1212 return 0;
1213 }
1214 }
1215
1216 if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1217 !test_bit(CONNECTED, &vif->flags)) {
1218 /*
1219 * Store the key locally so that it can be re-configured after
1220 * the AP mode has properly started
1221 * (ath6kl_install_statioc_wep_keys).
1222 */
1223 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1224 "Delay WEP key configuration until AP mode has been started\n");
1225 vif->wep_key_list[key_index].key_len = key->key_len;
1226 memcpy(vif->wep_key_list[key_index].key, key->key,
1227 key->key_len);
1228 return 0;
1229 }
1230
1231 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1232 key_type, key_usage, key->key_len,
1233 key->seq, key->seq_len, key->key,
1234 KEY_OP_INIT_VAL,
1235 (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1236 }
1237
1238 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1239 u8 key_index, bool pairwise,
1240 const u8 *mac_addr)
1241 {
1242 struct ath6kl *ar = ath6kl_priv(ndev);
1243 struct ath6kl_vif *vif = netdev_priv(ndev);
1244
1245 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1246
1247 if (!ath6kl_cfg80211_ready(vif))
1248 return -EIO;
1249
1250 if (key_index > WMI_MAX_KEY_INDEX) {
1251 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1252 "%s: key index %d out of bounds\n", __func__,
1253 key_index);
1254 return -ENOENT;
1255 }
1256
1257 if (!vif->keys[key_index].key_len) {
1258 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1259 "%s: index %d is empty\n", __func__, key_index);
1260 return 0;
1261 }
1262
1263 vif->keys[key_index].key_len = 0;
1264
1265 return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1266 }
1267
1268 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1269 u8 key_index, bool pairwise,
1270 const u8 *mac_addr, void *cookie,
1271 void (*callback) (void *cookie,
1272 struct key_params *))
1273 {
1274 struct ath6kl_vif *vif = netdev_priv(ndev);
1275 struct ath6kl_key *key = NULL;
1276 struct key_params params;
1277
1278 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1279
1280 if (!ath6kl_cfg80211_ready(vif))
1281 return -EIO;
1282
1283 if (key_index > WMI_MAX_KEY_INDEX) {
1284 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1285 "%s: key index %d out of bounds\n", __func__,
1286 key_index);
1287 return -ENOENT;
1288 }
1289
1290 key = &vif->keys[key_index];
1291 memset(&params, 0, sizeof(params));
1292 params.cipher = key->cipher;
1293 params.key_len = key->key_len;
1294 params.seq_len = key->seq_len;
1295 params.seq = key->seq;
1296 params.key = key->key;
1297
1298 callback(cookie, &params);
1299
1300 return key->key_len ? 0 : -ENOENT;
1301 }
1302
1303 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1304 struct net_device *ndev,
1305 u8 key_index, bool unicast,
1306 bool multicast)
1307 {
1308 struct ath6kl *ar = ath6kl_priv(ndev);
1309 struct ath6kl_vif *vif = netdev_priv(ndev);
1310 struct ath6kl_key *key = NULL;
1311 u8 key_usage;
1312 enum crypto_type key_type = NONE_CRYPT;
1313
1314 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1315
1316 if (!ath6kl_cfg80211_ready(vif))
1317 return -EIO;
1318
1319 if (key_index > WMI_MAX_KEY_INDEX) {
1320 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1321 "%s: key index %d out of bounds\n",
1322 __func__, key_index);
1323 return -ENOENT;
1324 }
1325
1326 if (!vif->keys[key_index].key_len) {
1327 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1328 __func__, key_index);
1329 return -EINVAL;
1330 }
1331
1332 vif->def_txkey_index = key_index;
1333 key = &vif->keys[vif->def_txkey_index];
1334 key_usage = GROUP_USAGE;
1335 if (vif->prwise_crypto == WEP_CRYPT)
1336 key_usage |= TX_USAGE;
1337 if (unicast)
1338 key_type = vif->prwise_crypto;
1339 if (multicast)
1340 key_type = vif->grp_crypto;
1341
1342 if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1343 return 0; /* Delay until AP mode has been started */
1344
1345 return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1346 vif->def_txkey_index,
1347 key_type, key_usage,
1348 key->key_len, key->seq, key->seq_len,
1349 key->key,
1350 KEY_OP_INIT_VAL, NULL,
1351 SYNC_BOTH_WMIFLAG);
1352 }
1353
1354 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1355 bool ismcast)
1356 {
1357 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1358 "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1359
1360 cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1361 (ismcast ? NL80211_KEYTYPE_GROUP :
1362 NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1363 GFP_KERNEL);
1364 }
1365
1366 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1367 {
1368 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1369 struct ath6kl_vif *vif;
1370 int ret;
1371
1372 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1373 changed);
1374
1375 vif = ath6kl_vif_first(ar);
1376 if (!vif)
1377 return -EIO;
1378
1379 if (!ath6kl_cfg80211_ready(vif))
1380 return -EIO;
1381
1382 if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1383 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1384 if (ret != 0) {
1385 ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1386 return -EIO;
1387 }
1388 }
1389
1390 return 0;
1391 }
1392
1393 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1394 struct wireless_dev *wdev,
1395 enum nl80211_tx_power_setting type,
1396 int mbm)
1397 {
1398 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1399 struct ath6kl_vif *vif;
1400 int dbm = MBM_TO_DBM(mbm);
1401
1402 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1403 type, dbm);
1404
1405 vif = ath6kl_vif_first(ar);
1406 if (!vif)
1407 return -EIO;
1408
1409 if (!ath6kl_cfg80211_ready(vif))
1410 return -EIO;
1411
1412 switch (type) {
1413 case NL80211_TX_POWER_AUTOMATIC:
1414 return 0;
1415 case NL80211_TX_POWER_LIMITED:
1416 ar->tx_pwr = dbm;
1417 break;
1418 default:
1419 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1420 __func__, type);
1421 return -EOPNOTSUPP;
1422 }
1423
1424 ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1425
1426 return 0;
1427 }
1428
1429 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy,
1430 struct wireless_dev *wdev,
1431 int *dbm)
1432 {
1433 struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1434 struct ath6kl_vif *vif;
1435
1436 vif = ath6kl_vif_first(ar);
1437 if (!vif)
1438 return -EIO;
1439
1440 if (!ath6kl_cfg80211_ready(vif))
1441 return -EIO;
1442
1443 if (test_bit(CONNECTED, &vif->flags)) {
1444 ar->tx_pwr = 0;
1445
1446 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1447 ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1448 return -EIO;
1449 }
1450
1451 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1452 5 * HZ);
1453
1454 if (signal_pending(current)) {
1455 ath6kl_err("target did not respond\n");
1456 return -EINTR;
1457 }
1458 }
1459
1460 *dbm = ar->tx_pwr;
1461 return 0;
1462 }
1463
1464 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1465 struct net_device *dev,
1466 bool pmgmt, int timeout)
1467 {
1468 struct ath6kl *ar = ath6kl_priv(dev);
1469 struct wmi_power_mode_cmd mode;
1470 struct ath6kl_vif *vif = netdev_priv(dev);
1471
1472 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1473 __func__, pmgmt, timeout);
1474
1475 if (!ath6kl_cfg80211_ready(vif))
1476 return -EIO;
1477
1478 if (pmgmt) {
1479 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1480 mode.pwr_mode = REC_POWER;
1481 } else {
1482 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1483 mode.pwr_mode = MAX_PERF_POWER;
1484 }
1485
1486 if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1487 mode.pwr_mode) != 0) {
1488 ath6kl_err("wmi_powermode_cmd failed\n");
1489 return -EIO;
1490 }
1491
1492 return 0;
1493 }
1494
1495 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1496 const char *name,
1497 enum nl80211_iftype type,
1498 u32 *flags,
1499 struct vif_params *params)
1500 {
1501 struct ath6kl *ar = wiphy_priv(wiphy);
1502 struct wireless_dev *wdev;
1503 u8 if_idx, nw_type;
1504
1505 if (ar->num_vif == ar->vif_max) {
1506 ath6kl_err("Reached maximum number of supported vif\n");
1507 return ERR_PTR(-EINVAL);
1508 }
1509
1510 if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1511 ath6kl_err("Not a supported interface type\n");
1512 return ERR_PTR(-EINVAL);
1513 }
1514
1515 wdev = ath6kl_interface_add(ar, name, type, if_idx, nw_type);
1516 if (!wdev)
1517 return ERR_PTR(-ENOMEM);
1518
1519 ar->num_vif++;
1520
1521 return wdev;
1522 }
1523
1524 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1525 struct wireless_dev *wdev)
1526 {
1527 struct ath6kl *ar = wiphy_priv(wiphy);
1528 struct ath6kl_vif *vif = netdev_priv(wdev->netdev);
1529
1530 spin_lock_bh(&ar->list_lock);
1531 list_del(&vif->list);
1532 spin_unlock_bh(&ar->list_lock);
1533
1534 ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1535
1536 rtnl_lock();
1537 ath6kl_cfg80211_vif_cleanup(vif);
1538 rtnl_unlock();
1539
1540 return 0;
1541 }
1542
1543 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1544 struct net_device *ndev,
1545 enum nl80211_iftype type, u32 *flags,
1546 struct vif_params *params)
1547 {
1548 struct ath6kl_vif *vif = netdev_priv(ndev);
1549 int i;
1550
1551 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1552
1553 /*
1554 * Don't bring up p2p on an interface which is not initialized
1555 * for p2p operation where fw does not have capability to switch
1556 * dynamically between non-p2p and p2p type interface.
1557 */
1558 if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1559 vif->ar->fw_capabilities) &&
1560 (type == NL80211_IFTYPE_P2P_CLIENT ||
1561 type == NL80211_IFTYPE_P2P_GO)) {
1562 if (vif->ar->vif_max == 1) {
1563 if (vif->fw_vif_idx != 0)
1564 return -EINVAL;
1565 else
1566 goto set_iface_type;
1567 }
1568
1569 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1570 if (i == vif->fw_vif_idx)
1571 break;
1572 }
1573
1574 if (i == vif->ar->vif_max) {
1575 ath6kl_err("Invalid interface to bring up P2P\n");
1576 return -EINVAL;
1577 }
1578 }
1579
1580 /* need to clean up enhanced bmiss detection fw state */
1581 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1582
1583 set_iface_type:
1584 switch (type) {
1585 case NL80211_IFTYPE_STATION:
1586 case NL80211_IFTYPE_P2P_CLIENT:
1587 vif->next_mode = INFRA_NETWORK;
1588 break;
1589 case NL80211_IFTYPE_ADHOC:
1590 vif->next_mode = ADHOC_NETWORK;
1591 break;
1592 case NL80211_IFTYPE_AP:
1593 case NL80211_IFTYPE_P2P_GO:
1594 vif->next_mode = AP_NETWORK;
1595 break;
1596 default:
1597 ath6kl_err("invalid interface type %u\n", type);
1598 return -EOPNOTSUPP;
1599 }
1600
1601 vif->wdev.iftype = type;
1602
1603 return 0;
1604 }
1605
1606 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1607 struct net_device *dev,
1608 struct cfg80211_ibss_params *ibss_param)
1609 {
1610 struct ath6kl *ar = ath6kl_priv(dev);
1611 struct ath6kl_vif *vif = netdev_priv(dev);
1612 int status;
1613
1614 if (!ath6kl_cfg80211_ready(vif))
1615 return -EIO;
1616
1617 vif->ssid_len = ibss_param->ssid_len;
1618 memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1619
1620 if (ibss_param->chandef.chan)
1621 vif->ch_hint = ibss_param->chandef.chan->center_freq;
1622
1623 if (ibss_param->channel_fixed) {
1624 /*
1625 * TODO: channel_fixed: The channel should be fixed, do not
1626 * search for IBSSs to join on other channels. Target
1627 * firmware does not support this feature, needs to be
1628 * updated.
1629 */
1630 return -EOPNOTSUPP;
1631 }
1632
1633 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1634 if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1635 memcpy(vif->req_bssid, ibss_param->bssid,
1636 sizeof(vif->req_bssid));
1637
1638 ath6kl_set_wpa_version(vif, 0);
1639
1640 status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1641 if (status)
1642 return status;
1643
1644 if (ibss_param->privacy) {
1645 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1646 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1647 } else {
1648 ath6kl_set_cipher(vif, 0, true);
1649 ath6kl_set_cipher(vif, 0, false);
1650 }
1651
1652 vif->nw_type = vif->next_mode;
1653
1654 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1655 "%s: connect called with authmode %d dot11 auth %d"
1656 " PW crypto %d PW crypto len %d GRP crypto %d"
1657 " GRP crypto len %d channel hint %u\n",
1658 __func__,
1659 vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1660 vif->prwise_crypto_len, vif->grp_crypto,
1661 vif->grp_crypto_len, vif->ch_hint);
1662
1663 status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1664 vif->dot11_auth_mode, vif->auth_mode,
1665 vif->prwise_crypto,
1666 vif->prwise_crypto_len,
1667 vif->grp_crypto, vif->grp_crypto_len,
1668 vif->ssid_len, vif->ssid,
1669 vif->req_bssid, vif->ch_hint,
1670 ar->connect_ctrl_flags, SUBTYPE_NONE);
1671 set_bit(CONNECT_PEND, &vif->flags);
1672
1673 return 0;
1674 }
1675
1676 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1677 struct net_device *dev)
1678 {
1679 struct ath6kl_vif *vif = netdev_priv(dev);
1680
1681 if (!ath6kl_cfg80211_ready(vif))
1682 return -EIO;
1683
1684 ath6kl_disconnect(vif);
1685 memset(vif->ssid, 0, sizeof(vif->ssid));
1686 vif->ssid_len = 0;
1687
1688 return 0;
1689 }
1690
1691 static const u32 cipher_suites[] = {
1692 WLAN_CIPHER_SUITE_WEP40,
1693 WLAN_CIPHER_SUITE_WEP104,
1694 WLAN_CIPHER_SUITE_TKIP,
1695 WLAN_CIPHER_SUITE_CCMP,
1696 CCKM_KRK_CIPHER_SUITE,
1697 WLAN_CIPHER_SUITE_SMS4,
1698 };
1699
1700 static bool is_rate_legacy(s32 rate)
1701 {
1702 static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1703 6000, 9000, 12000, 18000, 24000,
1704 36000, 48000, 54000
1705 };
1706 u8 i;
1707
1708 for (i = 0; i < ARRAY_SIZE(legacy); i++)
1709 if (rate == legacy[i])
1710 return true;
1711
1712 return false;
1713 }
1714
1715 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1716 {
1717 static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1718 52000, 58500, 65000, 72200
1719 };
1720 u8 i;
1721
1722 for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1723 if (rate == ht20[i]) {
1724 if (i == ARRAY_SIZE(ht20) - 1)
1725 /* last rate uses sgi */
1726 *sgi = true;
1727 else
1728 *sgi = false;
1729
1730 *mcs = i;
1731 return true;
1732 }
1733 }
1734 return false;
1735 }
1736
1737 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1738 {
1739 static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1740 81000, 108000, 121500, 135000,
1741 150000
1742 };
1743 u8 i;
1744
1745 for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1746 if (rate == ht40[i]) {
1747 if (i == ARRAY_SIZE(ht40) - 1)
1748 /* last rate uses sgi */
1749 *sgi = true;
1750 else
1751 *sgi = false;
1752
1753 *mcs = i;
1754 return true;
1755 }
1756 }
1757
1758 return false;
1759 }
1760
1761 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1762 const u8 *mac, struct station_info *sinfo)
1763 {
1764 struct ath6kl *ar = ath6kl_priv(dev);
1765 struct ath6kl_vif *vif = netdev_priv(dev);
1766 long left;
1767 bool sgi;
1768 s32 rate;
1769 int ret;
1770 u8 mcs;
1771
1772 if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1773 return -ENOENT;
1774
1775 if (down_interruptible(&ar->sem))
1776 return -EBUSY;
1777
1778 set_bit(STATS_UPDATE_PEND, &vif->flags);
1779
1780 ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1781
1782 if (ret != 0) {
1783 up(&ar->sem);
1784 return -EIO;
1785 }
1786
1787 left = wait_event_interruptible_timeout(ar->event_wq,
1788 !test_bit(STATS_UPDATE_PEND,
1789 &vif->flags),
1790 WMI_TIMEOUT);
1791
1792 up(&ar->sem);
1793
1794 if (left == 0)
1795 return -ETIMEDOUT;
1796 else if (left < 0)
1797 return left;
1798
1799 if (vif->target_stats.rx_byte) {
1800 sinfo->rx_bytes = vif->target_stats.rx_byte;
1801 sinfo->filled |= STATION_INFO_RX_BYTES64;
1802 sinfo->rx_packets = vif->target_stats.rx_pkt;
1803 sinfo->filled |= STATION_INFO_RX_PACKETS;
1804 }
1805
1806 if (vif->target_stats.tx_byte) {
1807 sinfo->tx_bytes = vif->target_stats.tx_byte;
1808 sinfo->filled |= STATION_INFO_TX_BYTES64;
1809 sinfo->tx_packets = vif->target_stats.tx_pkt;
1810 sinfo->filled |= STATION_INFO_TX_PACKETS;
1811 }
1812
1813 sinfo->signal = vif->target_stats.cs_rssi;
1814 sinfo->filled |= STATION_INFO_SIGNAL;
1815
1816 rate = vif->target_stats.tx_ucast_rate;
1817
1818 if (is_rate_legacy(rate)) {
1819 sinfo->txrate.legacy = rate / 100;
1820 } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1821 if (sgi) {
1822 sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1823 sinfo->txrate.mcs = mcs - 1;
1824 } else {
1825 sinfo->txrate.mcs = mcs;
1826 }
1827
1828 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1829 } else if (is_rate_ht40(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_40_MHZ_WIDTH;
1838 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1839 } else {
1840 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1841 "invalid rate from stats: %d\n", rate);
1842 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1843 return 0;
1844 }
1845
1846 sinfo->filled |= STATION_INFO_TX_BITRATE;
1847
1848 if (test_bit(CONNECTED, &vif->flags) &&
1849 test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1850 vif->nw_type == INFRA_NETWORK) {
1851 sinfo->filled |= STATION_INFO_BSS_PARAM;
1852 sinfo->bss_param.flags = 0;
1853 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1854 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1855 }
1856
1857 return 0;
1858 }
1859
1860 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1861 struct cfg80211_pmksa *pmksa)
1862 {
1863 struct ath6kl *ar = ath6kl_priv(netdev);
1864 struct ath6kl_vif *vif = netdev_priv(netdev);
1865
1866 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1867 pmksa->pmkid, true);
1868 }
1869
1870 static int ath6kl_del_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, false);
1878 }
1879
1880 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1881 {
1882 struct ath6kl *ar = ath6kl_priv(netdev);
1883 struct ath6kl_vif *vif = netdev_priv(netdev);
1884
1885 if (test_bit(CONNECTED, &vif->flags))
1886 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1887 vif->bssid, NULL, false);
1888 return 0;
1889 }
1890
1891 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1892 struct cfg80211_wowlan *wow, u32 *filter)
1893 {
1894 int ret, pos;
1895 u8 mask[WOW_PATTERN_SIZE];
1896 u16 i;
1897
1898 /* Configure the patterns that we received from the user. */
1899 for (i = 0; i < wow->n_patterns; i++) {
1900 /*
1901 * Convert given nl80211 specific mask value to equivalent
1902 * driver specific mask value and send it to the chip along
1903 * with patterns. For example, If the mask value defined in
1904 * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1905 * then equivalent driver specific mask value is
1906 * "0xFF 0x00 0xFF 0x00".
1907 */
1908 memset(&mask, 0, sizeof(mask));
1909 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1910 if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1911 mask[pos] = 0xFF;
1912 }
1913 /*
1914 * Note: Pattern's offset is not passed as part of wowlan
1915 * parameter from CFG layer. So it's always passed as ZERO
1916 * to the firmware. It means, given WOW patterns are always
1917 * matched from the first byte of received pkt in the firmware.
1918 */
1919 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1920 vif->fw_vif_idx, WOW_LIST_ID,
1921 wow->patterns[i].pattern_len,
1922 0 /* pattern offset */,
1923 wow->patterns[i].pattern, mask);
1924 if (ret)
1925 return ret;
1926 }
1927
1928 if (wow->disconnect)
1929 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1930
1931 if (wow->magic_pkt)
1932 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1933
1934 if (wow->gtk_rekey_failure)
1935 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1936
1937 if (wow->eap_identity_req)
1938 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1939
1940 if (wow->four_way_handshake)
1941 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1942
1943 return 0;
1944 }
1945
1946 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1947 {
1948 static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1949 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1950 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1951 0x00, 0x08 };
1952 static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1953 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1954 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1955 0x00, 0x7f };
1956 u8 unicst_offset = 0;
1957 static const u8 arp_pattern[] = { 0x08, 0x06 };
1958 static const u8 arp_mask[] = { 0xff, 0xff };
1959 u8 arp_offset = 20;
1960 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1961 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1962 u8 discvr_offset = 38;
1963 static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1964 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1965 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1966 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1967 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1968 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1969 static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1970 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1971 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1972 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1973 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1974 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1975 u8 dhcp_offset = 0;
1976 int ret;
1977
1978 /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1979 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1980 vif->fw_vif_idx, WOW_LIST_ID,
1981 sizeof(unicst_pattern), unicst_offset,
1982 unicst_pattern, unicst_mask);
1983 if (ret) {
1984 ath6kl_err("failed to add WOW unicast IP pattern\n");
1985 return ret;
1986 }
1987
1988 /* Setup all ARP pkt pattern */
1989 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1990 vif->fw_vif_idx, WOW_LIST_ID,
1991 sizeof(arp_pattern), arp_offset,
1992 arp_pattern, arp_mask);
1993 if (ret) {
1994 ath6kl_err("failed to add WOW ARP pattern\n");
1995 return ret;
1996 }
1997
1998 /*
1999 * Setup multicast pattern for mDNS 224.0.0.251,
2000 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2001 */
2002 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2003 vif->fw_vif_idx, WOW_LIST_ID,
2004 sizeof(discvr_pattern), discvr_offset,
2005 discvr_pattern, discvr_mask);
2006 if (ret) {
2007 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2008 return ret;
2009 }
2010
2011 /* Setup all DHCP broadcast pkt pattern */
2012 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2013 vif->fw_vif_idx, WOW_LIST_ID,
2014 sizeof(dhcp_pattern), dhcp_offset,
2015 dhcp_pattern, dhcp_mask);
2016 if (ret) {
2017 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2018 return ret;
2019 }
2020
2021 return 0;
2022 }
2023
2024 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2025 {
2026 struct net_device *ndev = vif->ndev;
2027 static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2028 static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2029 u8 discvr_offset = 38;
2030 u8 mac_mask[ETH_ALEN];
2031 int ret;
2032
2033 /* Setup unicast pkt pattern */
2034 memset(mac_mask, 0xff, ETH_ALEN);
2035 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2036 vif->fw_vif_idx, WOW_LIST_ID,
2037 ETH_ALEN, 0, ndev->dev_addr,
2038 mac_mask);
2039 if (ret) {
2040 ath6kl_err("failed to add WOW unicast pattern\n");
2041 return ret;
2042 }
2043
2044 /*
2045 * Setup multicast pattern for mDNS 224.0.0.251,
2046 * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2047 */
2048 if ((ndev->flags & IFF_ALLMULTI) ||
2049 (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2050 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2051 vif->fw_vif_idx, WOW_LIST_ID,
2052 sizeof(discvr_pattern), discvr_offset,
2053 discvr_pattern, discvr_mask);
2054 if (ret) {
2055 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2056 return ret;
2057 }
2058 }
2059
2060 return 0;
2061 }
2062
2063 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2064 {
2065 return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2066 }
2067
2068 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2069 {
2070 return !ar->tx_pending[ar->ctrl_ep];
2071 }
2072
2073 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2074 {
2075 int ret, left;
2076
2077 clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2078
2079 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2080 ATH6KL_HOST_MODE_ASLEEP);
2081 if (ret)
2082 return ret;
2083
2084 left = wait_event_interruptible_timeout(ar->event_wq,
2085 is_hsleep_mode_procsed(vif),
2086 WMI_TIMEOUT);
2087 if (left == 0) {
2088 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2089 ret = -ETIMEDOUT;
2090 } else if (left < 0) {
2091 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2092 left);
2093 ret = left;
2094 }
2095
2096 if (ar->tx_pending[ar->ctrl_ep]) {
2097 left = wait_event_interruptible_timeout(ar->event_wq,
2098 is_ctrl_ep_empty(ar),
2099 WMI_TIMEOUT);
2100 if (left == 0) {
2101 ath6kl_warn("clear wmi ctrl data timeout\n");
2102 ret = -ETIMEDOUT;
2103 } else if (left < 0) {
2104 ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2105 ret = left;
2106 }
2107 }
2108
2109 return ret;
2110 }
2111
2112 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif,
2113 struct cfg80211_wowlan *wow, u32 *filter)
2114 {
2115 struct ath6kl *ar = vif->ar;
2116 struct in_device *in_dev;
2117 struct in_ifaddr *ifa;
2118 int ret;
2119 u16 i, bmiss_time;
2120 __be32 ips[MAX_IP_ADDRS];
2121 u8 index = 0;
2122
2123 if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2124 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2125 ar->fw_capabilities)) {
2126 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2127 vif->fw_vif_idx, false);
2128 if (ret)
2129 return ret;
2130 }
2131
2132 /* Clear existing WOW patterns */
2133 for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2134 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2135 WOW_LIST_ID, i);
2136
2137 /*
2138 * Skip the default WOW pattern configuration
2139 * if the driver receives any WOW patterns from
2140 * the user.
2141 */
2142 if (wow)
2143 ret = ath6kl_wow_usr(ar, vif, wow, filter);
2144 else if (vif->nw_type == AP_NETWORK)
2145 ret = ath6kl_wow_ap(ar, vif);
2146 else
2147 ret = ath6kl_wow_sta(ar, vif);
2148
2149 if (ret)
2150 return ret;
2151
2152 netif_stop_queue(vif->ndev);
2153
2154 if (vif->nw_type != AP_NETWORK) {
2155 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2156 ATH6KL_MAX_WOW_LISTEN_INTL,
2157 0);
2158 if (ret)
2159 return ret;
2160
2161 /* Set listen interval x 15 times as bmiss time */
2162 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2163 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2164 bmiss_time = ATH6KL_MAX_BMISS_TIME;
2165
2166 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2167 bmiss_time, 0);
2168 if (ret)
2169 return ret;
2170
2171 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2172 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2173 0, 0, 0, 0);
2174 if (ret)
2175 return ret;
2176 }
2177
2178 /* Setup own IP addr for ARP agent. */
2179 in_dev = __in_dev_get_rtnl(vif->ndev);
2180 if (!in_dev)
2181 return 0;
2182
2183 ifa = in_dev->ifa_list;
2184 memset(&ips, 0, sizeof(ips));
2185
2186 /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2187 while (index < MAX_IP_ADDRS && ifa) {
2188 ips[index] = ifa->ifa_local;
2189 ifa = ifa->ifa_next;
2190 index++;
2191 }
2192
2193 if (ifa) {
2194 ath6kl_err("total IP addr count is exceeding fw limit\n");
2195 return -EINVAL;
2196 }
2197
2198 ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2199 if (ret) {
2200 ath6kl_err("fail to setup ip for arp agent\n");
2201 return ret;
2202 }
2203
2204 return ret;
2205 }
2206
2207 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2208 {
2209 struct ath6kl_vif *first_vif, *vif;
2210 int ret = 0;
2211 u32 filter = 0;
2212 bool connected = false;
2213
2214 /* enter / leave wow suspend on first vif always */
2215 first_vif = ath6kl_vif_first(ar);
2216 if (WARN_ON(unlikely(!first_vif)) ||
2217 !ath6kl_cfg80211_ready(first_vif))
2218 return -EIO;
2219
2220 if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2221 return -EINVAL;
2222
2223 /* install filters for each connected vif */
2224 spin_lock_bh(&ar->list_lock);
2225 list_for_each_entry(vif, &ar->vif_list, list) {
2226 if (!test_bit(CONNECTED, &vif->flags) ||
2227 !ath6kl_cfg80211_ready(vif))
2228 continue;
2229 connected = true;
2230
2231 ret = ath6kl_wow_suspend_vif(vif, wow, &filter);
2232 if (ret)
2233 break;
2234 }
2235 spin_unlock_bh(&ar->list_lock);
2236
2237 if (!connected)
2238 return -ENOTCONN;
2239 else if (ret)
2240 return ret;
2241
2242 ar->state = ATH6KL_STATE_SUSPENDING;
2243
2244 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx,
2245 ATH6KL_WOW_MODE_ENABLE,
2246 filter,
2247 WOW_HOST_REQ_DELAY);
2248 if (ret)
2249 return ret;
2250
2251 return ath6kl_cfg80211_host_sleep(ar, first_vif);
2252 }
2253
2254 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif)
2255 {
2256 struct ath6kl *ar = vif->ar;
2257 int ret;
2258
2259 if (vif->nw_type != AP_NETWORK) {
2260 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2261 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2262 if (ret)
2263 return ret;
2264
2265 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2266 vif->listen_intvl_t, 0);
2267 if (ret)
2268 return ret;
2269
2270 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2271 vif->bmiss_time_t, 0);
2272 if (ret)
2273 return ret;
2274 }
2275
2276 if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2277 test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2278 ar->fw_capabilities)) {
2279 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2280 vif->fw_vif_idx, true);
2281 if (ret)
2282 return ret;
2283 }
2284
2285 netif_wake_queue(vif->ndev);
2286
2287 return 0;
2288 }
2289
2290 static int ath6kl_wow_resume(struct ath6kl *ar)
2291 {
2292 struct ath6kl_vif *vif;
2293 int ret;
2294
2295 vif = ath6kl_vif_first(ar);
2296 if (WARN_ON(unlikely(!vif)) ||
2297 !ath6kl_cfg80211_ready(vif))
2298 return -EIO;
2299
2300 ar->state = ATH6KL_STATE_RESUMING;
2301
2302 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2303 ATH6KL_HOST_MODE_AWAKE);
2304 if (ret) {
2305 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2306 ret);
2307 goto cleanup;
2308 }
2309
2310 spin_lock_bh(&ar->list_lock);
2311 list_for_each_entry(vif, &ar->vif_list, list) {
2312 if (!test_bit(CONNECTED, &vif->flags) ||
2313 !ath6kl_cfg80211_ready(vif))
2314 continue;
2315 ret = ath6kl_wow_resume_vif(vif);
2316 if (ret)
2317 break;
2318 }
2319 spin_unlock_bh(&ar->list_lock);
2320
2321 if (ret)
2322 goto cleanup;
2323
2324 ar->state = ATH6KL_STATE_ON;
2325 return 0;
2326
2327 cleanup:
2328 ar->state = ATH6KL_STATE_WOW;
2329 return ret;
2330 }
2331
2332 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2333 {
2334 struct ath6kl_vif *vif;
2335 int ret;
2336
2337 vif = ath6kl_vif_first(ar);
2338 if (!vif)
2339 return -EIO;
2340
2341 if (!test_bit(WMI_READY, &ar->flag)) {
2342 ath6kl_err("deepsleep failed as wmi is not ready\n");
2343 return -EIO;
2344 }
2345
2346 ath6kl_cfg80211_stop_all(ar);
2347
2348 /* Save the current power mode before enabling power save */
2349 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2350
2351 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2352 if (ret)
2353 return ret;
2354
2355 /* Disable WOW mode */
2356 ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2357 ATH6KL_WOW_MODE_DISABLE,
2358 0, 0);
2359 if (ret)
2360 return ret;
2361
2362 /* Flush all non control pkts in TX path */
2363 ath6kl_tx_data_cleanup(ar);
2364
2365 ret = ath6kl_cfg80211_host_sleep(ar, vif);
2366 if (ret)
2367 return ret;
2368
2369 return 0;
2370 }
2371
2372 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2373 {
2374 struct ath6kl_vif *vif;
2375 int ret;
2376
2377 vif = ath6kl_vif_first(ar);
2378
2379 if (!vif)
2380 return -EIO;
2381
2382 if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2383 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2384 ar->wmi->saved_pwr_mode);
2385 if (ret)
2386 return ret;
2387 }
2388
2389 ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2390 ATH6KL_HOST_MODE_AWAKE);
2391 if (ret)
2392 return ret;
2393
2394 ar->state = ATH6KL_STATE_ON;
2395
2396 /* Reset scan parameter to default values */
2397 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2398 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2399 if (ret)
2400 return ret;
2401
2402 return 0;
2403 }
2404
2405 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2406 enum ath6kl_cfg_suspend_mode mode,
2407 struct cfg80211_wowlan *wow)
2408 {
2409 struct ath6kl_vif *vif;
2410 enum ath6kl_state prev_state;
2411 int ret;
2412
2413 switch (mode) {
2414 case ATH6KL_CFG_SUSPEND_WOW:
2415
2416 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2417
2418 /* Flush all non control pkts in TX path */
2419 ath6kl_tx_data_cleanup(ar);
2420
2421 prev_state = ar->state;
2422
2423 ret = ath6kl_wow_suspend(ar, wow);
2424 if (ret) {
2425 ar->state = prev_state;
2426 return ret;
2427 }
2428
2429 ar->state = ATH6KL_STATE_WOW;
2430 break;
2431
2432 case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2433
2434 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2435
2436 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2437 if (ret) {
2438 ath6kl_err("deepsleep suspend failed: %d\n", ret);
2439 return ret;
2440 }
2441
2442 ar->state = ATH6KL_STATE_DEEPSLEEP;
2443
2444 break;
2445
2446 case ATH6KL_CFG_SUSPEND_CUTPOWER:
2447
2448 ath6kl_cfg80211_stop_all(ar);
2449
2450 if (ar->state == ATH6KL_STATE_OFF) {
2451 ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2452 "suspend hw off, no action for cutpower\n");
2453 break;
2454 }
2455
2456 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2457
2458 ret = ath6kl_init_hw_stop(ar);
2459 if (ret) {
2460 ath6kl_warn("failed to stop hw during suspend: %d\n",
2461 ret);
2462 }
2463
2464 ar->state = ATH6KL_STATE_CUTPOWER;
2465
2466 break;
2467
2468 default:
2469 break;
2470 }
2471
2472 list_for_each_entry(vif, &ar->vif_list, list)
2473 ath6kl_cfg80211_scan_complete_event(vif, true);
2474
2475 return 0;
2476 }
2477 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2478
2479 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2480 {
2481 int ret;
2482
2483 switch (ar->state) {
2484 case ATH6KL_STATE_WOW:
2485 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2486
2487 ret = ath6kl_wow_resume(ar);
2488 if (ret) {
2489 ath6kl_warn("wow mode resume failed: %d\n", ret);
2490 return ret;
2491 }
2492
2493 break;
2494
2495 case ATH6KL_STATE_DEEPSLEEP:
2496 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2497
2498 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2499 if (ret) {
2500 ath6kl_warn("deep sleep resume failed: %d\n", ret);
2501 return ret;
2502 }
2503 break;
2504
2505 case ATH6KL_STATE_CUTPOWER:
2506 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2507
2508 ret = ath6kl_init_hw_start(ar);
2509 if (ret) {
2510 ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2511 return ret;
2512 }
2513 break;
2514
2515 default:
2516 break;
2517 }
2518
2519 return 0;
2520 }
2521 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2522
2523 #ifdef CONFIG_PM
2524
2525 /* hif layer decides what suspend mode to use */
2526 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2527 struct cfg80211_wowlan *wow)
2528 {
2529 struct ath6kl *ar = wiphy_priv(wiphy);
2530
2531 ath6kl_recovery_suspend(ar);
2532
2533 return ath6kl_hif_suspend(ar, wow);
2534 }
2535
2536 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2537 {
2538 struct ath6kl *ar = wiphy_priv(wiphy);
2539 int err;
2540
2541 err = ath6kl_hif_resume(ar);
2542 if (err)
2543 return err;
2544
2545 ath6kl_recovery_resume(ar);
2546
2547 return 0;
2548 }
2549
2550 /*
2551 * FIXME: WOW suspend mode is selected if the host sdio controller supports
2552 * both sdio irq wake up and keep power. The target pulls sdio data line to
2553 * wake up the host when WOW pattern matches. This causes sdio irq handler
2554 * is being called in the host side which internally hits ath6kl's RX path.
2555 *
2556 * Since sdio interrupt is not disabled, RX path executes even before
2557 * the host executes the actual resume operation from PM module.
2558 *
2559 * In the current scenario, WOW resume should happen before start processing
2560 * any data from the target. So It's required to perform WOW resume in RX path.
2561 * Ideally we should perform WOW resume only in the actual platform
2562 * resume path. This area needs bit rework to avoid WOW resume in RX path.
2563 *
2564 * ath6kl_check_wow_status() is called from ath6kl_rx().
2565 */
2566 void ath6kl_check_wow_status(struct ath6kl *ar)
2567 {
2568 if (ar->state == ATH6KL_STATE_SUSPENDING)
2569 return;
2570
2571 if (ar->state == ATH6KL_STATE_WOW)
2572 ath6kl_cfg80211_resume(ar);
2573 }
2574
2575 #else
2576
2577 void ath6kl_check_wow_status(struct ath6kl *ar)
2578 {
2579 }
2580 #endif
2581
2582 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum ieee80211_band band,
2583 bool ht_enable)
2584 {
2585 struct ath6kl_htcap *htcap = &vif->htcap[band];
2586
2587 if (htcap->ht_enable == ht_enable)
2588 return 0;
2589
2590 if (ht_enable) {
2591 /* Set default ht capabilities */
2592 htcap->ht_enable = true;
2593 htcap->cap_info = (band == IEEE80211_BAND_2GHZ) ?
2594 ath6kl_g_htcap : ath6kl_a_htcap;
2595 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2596 } else /* Disable ht */
2597 memset(htcap, 0, sizeof(*htcap));
2598
2599 return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2600 band, htcap);
2601 }
2602
2603 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2604 {
2605 struct wiphy *wiphy = vif->ar->wiphy;
2606 int band, ret = 0;
2607
2608 for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2609 if (!wiphy->bands[band])
2610 continue;
2611
2612 ret = ath6kl_set_htcap(vif, band,
2613 wiphy->bands[band]->ht_cap.ht_supported);
2614 if (ret)
2615 return ret;
2616 }
2617
2618 return ret;
2619 }
2620
2621 static bool ath6kl_is_p2p_ie(const u8 *pos)
2622 {
2623 return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2624 pos[2] == 0x50 && pos[3] == 0x6f &&
2625 pos[4] == 0x9a && pos[5] == 0x09;
2626 }
2627
2628 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2629 const u8 *ies, size_t ies_len)
2630 {
2631 struct ath6kl *ar = vif->ar;
2632 const u8 *pos;
2633 u8 *buf = NULL;
2634 size_t len = 0;
2635 int ret;
2636
2637 /*
2638 * Filter out P2P IE(s) since they will be included depending on
2639 * the Probe Request frame in ath6kl_send_go_probe_resp().
2640 */
2641
2642 if (ies && ies_len) {
2643 buf = kmalloc(ies_len, GFP_KERNEL);
2644 if (buf == NULL)
2645 return -ENOMEM;
2646 pos = ies;
2647 while (pos + 1 < ies + ies_len) {
2648 if (pos + 2 + pos[1] > ies + ies_len)
2649 break;
2650 if (!ath6kl_is_p2p_ie(pos)) {
2651 memcpy(buf + len, pos, 2 + pos[1]);
2652 len += 2 + pos[1];
2653 }
2654 pos += 2 + pos[1];
2655 }
2656 }
2657
2658 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2659 WMI_FRAME_PROBE_RESP, buf, len);
2660 kfree(buf);
2661 return ret;
2662 }
2663
2664 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2665 struct cfg80211_beacon_data *info)
2666 {
2667 struct ath6kl *ar = vif->ar;
2668 int res;
2669
2670 /* this also clears IE in fw if it's not set */
2671 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2672 WMI_FRAME_BEACON,
2673 info->beacon_ies,
2674 info->beacon_ies_len);
2675 if (res)
2676 return res;
2677
2678 /* this also clears IE in fw if it's not set */
2679 res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2680 info->proberesp_ies_len);
2681 if (res)
2682 return res;
2683
2684 /* this also clears IE in fw if it's not set */
2685 res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2686 WMI_FRAME_ASSOC_RESP,
2687 info->assocresp_ies,
2688 info->assocresp_ies_len);
2689 if (res)
2690 return res;
2691
2692 return 0;
2693 }
2694
2695 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2696 u8 *rsn_capab)
2697 {
2698 const u8 *rsn_ie;
2699 size_t rsn_ie_len;
2700 u16 cnt;
2701
2702 if (!beacon->tail)
2703 return -EINVAL;
2704
2705 rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2706 if (!rsn_ie)
2707 return -EINVAL;
2708
2709 rsn_ie_len = *(rsn_ie + 1);
2710 /* skip element id and length */
2711 rsn_ie += 2;
2712
2713 /* skip version */
2714 if (rsn_ie_len < 2)
2715 return -EINVAL;
2716 rsn_ie += 2;
2717 rsn_ie_len -= 2;
2718
2719 /* skip group cipher suite */
2720 if (rsn_ie_len < 4)
2721 return 0;
2722 rsn_ie += 4;
2723 rsn_ie_len -= 4;
2724
2725 /* skip pairwise cipher suite */
2726 if (rsn_ie_len < 2)
2727 return 0;
2728 cnt = get_unaligned_le16(rsn_ie);
2729 rsn_ie += (2 + cnt * 4);
2730 rsn_ie_len -= (2 + cnt * 4);
2731
2732 /* skip akm suite */
2733 if (rsn_ie_len < 2)
2734 return 0;
2735 cnt = get_unaligned_le16(rsn_ie);
2736 rsn_ie += (2 + cnt * 4);
2737 rsn_ie_len -= (2 + cnt * 4);
2738
2739 if (rsn_ie_len < 2)
2740 return 0;
2741
2742 memcpy(rsn_capab, rsn_ie, 2);
2743
2744 return 0;
2745 }
2746
2747 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2748 struct cfg80211_ap_settings *info)
2749 {
2750 struct ath6kl *ar = ath6kl_priv(dev);
2751 struct ath6kl_vif *vif = netdev_priv(dev);
2752 struct ieee80211_mgmt *mgmt;
2753 bool hidden = false;
2754 u8 *ies;
2755 int ies_len;
2756 struct wmi_connect_cmd p;
2757 int res;
2758 int i, ret;
2759 u16 rsn_capab = 0;
2760 int inactivity_timeout = 0;
2761
2762 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2763
2764 if (!ath6kl_cfg80211_ready(vif))
2765 return -EIO;
2766
2767 if (vif->next_mode != AP_NETWORK)
2768 return -EOPNOTSUPP;
2769
2770 res = ath6kl_set_ies(vif, &info->beacon);
2771
2772 ar->ap_mode_bkey.valid = false;
2773
2774 ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx,
2775 info->beacon_interval);
2776
2777 if (ret)
2778 ath6kl_warn("Failed to set beacon interval: %d\n", ret);
2779
2780 ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2781 info->dtim_period);
2782
2783 /* ignore error, just print a warning and continue normally */
2784 if (ret)
2785 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2786
2787 if (info->beacon.head == NULL)
2788 return -EINVAL;
2789 mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2790 ies = mgmt->u.beacon.variable;
2791 if (ies > info->beacon.head + info->beacon.head_len)
2792 return -EINVAL;
2793 ies_len = info->beacon.head + info->beacon.head_len - ies;
2794
2795 if (info->ssid == NULL)
2796 return -EINVAL;
2797 memcpy(vif->ssid, info->ssid, info->ssid_len);
2798 vif->ssid_len = info->ssid_len;
2799 if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2800 hidden = true;
2801
2802 res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2803 if (res)
2804 return res;
2805
2806 ret = ath6kl_set_auth_type(vif, info->auth_type);
2807 if (ret)
2808 return ret;
2809
2810 memset(&p, 0, sizeof(p));
2811
2812 for (i = 0; i < info->crypto.n_akm_suites; i++) {
2813 switch (info->crypto.akm_suites[i]) {
2814 case WLAN_AKM_SUITE_8021X:
2815 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2816 p.auth_mode |= WPA_AUTH;
2817 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2818 p.auth_mode |= WPA2_AUTH;
2819 break;
2820 case WLAN_AKM_SUITE_PSK:
2821 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2822 p.auth_mode |= WPA_PSK_AUTH;
2823 if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2824 p.auth_mode |= WPA2_PSK_AUTH;
2825 break;
2826 }
2827 }
2828 if (p.auth_mode == 0)
2829 p.auth_mode = NONE_AUTH;
2830 vif->auth_mode = p.auth_mode;
2831
2832 for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2833 switch (info->crypto.ciphers_pairwise[i]) {
2834 case WLAN_CIPHER_SUITE_WEP40:
2835 case WLAN_CIPHER_SUITE_WEP104:
2836 p.prwise_crypto_type |= WEP_CRYPT;
2837 break;
2838 case WLAN_CIPHER_SUITE_TKIP:
2839 p.prwise_crypto_type |= TKIP_CRYPT;
2840 break;
2841 case WLAN_CIPHER_SUITE_CCMP:
2842 p.prwise_crypto_type |= AES_CRYPT;
2843 break;
2844 case WLAN_CIPHER_SUITE_SMS4:
2845 p.prwise_crypto_type |= WAPI_CRYPT;
2846 break;
2847 }
2848 }
2849 if (p.prwise_crypto_type == 0) {
2850 p.prwise_crypto_type = NONE_CRYPT;
2851 ath6kl_set_cipher(vif, 0, true);
2852 } else if (info->crypto.n_ciphers_pairwise == 1) {
2853 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2854 }
2855
2856 switch (info->crypto.cipher_group) {
2857 case WLAN_CIPHER_SUITE_WEP40:
2858 case WLAN_CIPHER_SUITE_WEP104:
2859 p.grp_crypto_type = WEP_CRYPT;
2860 break;
2861 case WLAN_CIPHER_SUITE_TKIP:
2862 p.grp_crypto_type = TKIP_CRYPT;
2863 break;
2864 case WLAN_CIPHER_SUITE_CCMP:
2865 p.grp_crypto_type = AES_CRYPT;
2866 break;
2867 case WLAN_CIPHER_SUITE_SMS4:
2868 p.grp_crypto_type = WAPI_CRYPT;
2869 break;
2870 default:
2871 p.grp_crypto_type = NONE_CRYPT;
2872 break;
2873 }
2874 ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2875
2876 p.nw_type = AP_NETWORK;
2877 vif->nw_type = vif->next_mode;
2878
2879 p.ssid_len = vif->ssid_len;
2880 memcpy(p.ssid, vif->ssid, vif->ssid_len);
2881 p.dot11_auth_mode = vif->dot11_auth_mode;
2882 p.ch = cpu_to_le16(info->chandef.chan->center_freq);
2883
2884 /* Enable uAPSD support by default */
2885 res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2886 if (res < 0)
2887 return res;
2888
2889 if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2890 p.nw_subtype = SUBTYPE_P2PGO;
2891 } else {
2892 /*
2893 * Due to firmware limitation, it is not possible to
2894 * do P2P mgmt operations in AP mode
2895 */
2896 p.nw_subtype = SUBTYPE_NONE;
2897 }
2898
2899 if (info->inactivity_timeout) {
2900 inactivity_timeout = info->inactivity_timeout;
2901
2902 if (test_bit(ATH6KL_FW_CAPABILITY_AP_INACTIVITY_MINS,
2903 ar->fw_capabilities))
2904 inactivity_timeout = DIV_ROUND_UP(inactivity_timeout,
2905 60);
2906
2907 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2908 inactivity_timeout);
2909 if (res < 0)
2910 return res;
2911 }
2912
2913 if (ath6kl_set_htcap(vif, info->chandef.chan->band,
2914 cfg80211_get_chandef_type(&info->chandef)
2915 != NL80211_CHAN_NO_HT))
2916 return -EIO;
2917
2918 /*
2919 * Get the PTKSA replay counter in the RSN IE. Supplicant
2920 * will use the RSN IE in M3 message and firmware has to
2921 * advertise the same in beacon/probe response. Send
2922 * the complete RSN IE capability field to firmware
2923 */
2924 if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2925 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2926 ar->fw_capabilities)) {
2927 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2928 WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2929 (const u8 *) &rsn_capab,
2930 sizeof(rsn_capab));
2931 vif->rsn_capab = rsn_capab;
2932 if (res < 0)
2933 return res;
2934 }
2935
2936 memcpy(&vif->profile, &p, sizeof(p));
2937 res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2938 if (res < 0)
2939 return res;
2940
2941 return 0;
2942 }
2943
2944 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2945 struct cfg80211_beacon_data *beacon)
2946 {
2947 struct ath6kl_vif *vif = netdev_priv(dev);
2948
2949 if (!ath6kl_cfg80211_ready(vif))
2950 return -EIO;
2951
2952 if (vif->next_mode != AP_NETWORK)
2953 return -EOPNOTSUPP;
2954
2955 return ath6kl_set_ies(vif, beacon);
2956 }
2957
2958 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2959 {
2960 struct ath6kl *ar = ath6kl_priv(dev);
2961 struct ath6kl_vif *vif = netdev_priv(dev);
2962
2963 if (vif->nw_type != AP_NETWORK)
2964 return -EOPNOTSUPP;
2965 if (!test_bit(CONNECTED, &vif->flags))
2966 return -ENOTCONN;
2967
2968 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2969 clear_bit(CONNECTED, &vif->flags);
2970
2971 /* Restore ht setting in firmware */
2972 return ath6kl_restore_htcap(vif);
2973 }
2974
2975 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2976
2977 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2978 const u8 *mac)
2979 {
2980 struct ath6kl *ar = ath6kl_priv(dev);
2981 struct ath6kl_vif *vif = netdev_priv(dev);
2982 const u8 *addr = mac ? mac : bcast_addr;
2983
2984 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2985 addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2986 }
2987
2988 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
2989 const u8 *mac,
2990 struct station_parameters *params)
2991 {
2992 struct ath6kl *ar = ath6kl_priv(dev);
2993 struct ath6kl_vif *vif = netdev_priv(dev);
2994 int err;
2995
2996 if (vif->nw_type != AP_NETWORK)
2997 return -EOPNOTSUPP;
2998
2999 err = cfg80211_check_station_change(wiphy, params,
3000 CFG80211_STA_AP_MLME_CLIENT);
3001 if (err)
3002 return err;
3003
3004 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
3005 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3006 WMI_AP_MLME_AUTHORIZE, mac, 0);
3007 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3008 WMI_AP_MLME_UNAUTHORIZE, mac, 0);
3009 }
3010
3011 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
3012 struct wireless_dev *wdev,
3013 struct ieee80211_channel *chan,
3014 unsigned int duration,
3015 u64 *cookie)
3016 {
3017 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3018 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3019 u32 id;
3020
3021 /* TODO: if already pending or ongoing remain-on-channel,
3022 * return -EBUSY */
3023 id = ++vif->last_roc_id;
3024 if (id == 0) {
3025 /* Do not use 0 as the cookie value */
3026 id = ++vif->last_roc_id;
3027 }
3028 *cookie = id;
3029
3030 return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
3031 chan->center_freq, duration);
3032 }
3033
3034 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3035 struct wireless_dev *wdev,
3036 u64 cookie)
3037 {
3038 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3039 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3040
3041 if (cookie != vif->last_roc_id)
3042 return -ENOENT;
3043 vif->last_cancel_roc_id = cookie;
3044
3045 return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3046 }
3047
3048 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3049 const u8 *buf, size_t len,
3050 unsigned int freq)
3051 {
3052 struct ath6kl *ar = vif->ar;
3053 const u8 *pos;
3054 u8 *p2p;
3055 int p2p_len;
3056 int ret;
3057 const struct ieee80211_mgmt *mgmt;
3058
3059 mgmt = (const struct ieee80211_mgmt *) buf;
3060
3061 /* Include P2P IE(s) from the frame generated in user space. */
3062
3063 p2p = kmalloc(len, GFP_KERNEL);
3064 if (p2p == NULL)
3065 return -ENOMEM;
3066 p2p_len = 0;
3067
3068 pos = mgmt->u.probe_resp.variable;
3069 while (pos + 1 < buf + len) {
3070 if (pos + 2 + pos[1] > buf + len)
3071 break;
3072 if (ath6kl_is_p2p_ie(pos)) {
3073 memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3074 p2p_len += 2 + pos[1];
3075 }
3076 pos += 2 + pos[1];
3077 }
3078
3079 ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
3080 mgmt->da, p2p, p2p_len);
3081 kfree(p2p);
3082 return ret;
3083 }
3084
3085 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
3086 u32 id,
3087 u32 freq,
3088 u32 wait,
3089 const u8 *buf,
3090 size_t len,
3091 bool *more_data,
3092 bool no_cck)
3093 {
3094 struct ieee80211_mgmt *mgmt;
3095 struct ath6kl_sta *conn;
3096 bool is_psq_empty = false;
3097 struct ath6kl_mgmt_buff *mgmt_buf;
3098 size_t mgmt_buf_size;
3099 struct ath6kl *ar = vif->ar;
3100
3101 mgmt = (struct ieee80211_mgmt *) buf;
3102 if (is_multicast_ether_addr(mgmt->da))
3103 return false;
3104
3105 conn = ath6kl_find_sta(vif, mgmt->da);
3106 if (!conn)
3107 return false;
3108
3109 if (conn->sta_flags & STA_PS_SLEEP) {
3110 if (!(conn->sta_flags & STA_PS_POLLED)) {
3111 /* Queue the frames if the STA is sleeping */
3112 mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3113 mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3114 if (!mgmt_buf)
3115 return false;
3116
3117 INIT_LIST_HEAD(&mgmt_buf->list);
3118 mgmt_buf->id = id;
3119 mgmt_buf->freq = freq;
3120 mgmt_buf->wait = wait;
3121 mgmt_buf->len = len;
3122 mgmt_buf->no_cck = no_cck;
3123 memcpy(mgmt_buf->buf, buf, len);
3124 spin_lock_bh(&conn->psq_lock);
3125 is_psq_empty = skb_queue_empty(&conn->psq) &&
3126 (conn->mgmt_psq_len == 0);
3127 list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3128 conn->mgmt_psq_len++;
3129 spin_unlock_bh(&conn->psq_lock);
3130
3131 /*
3132 * If this is the first pkt getting queued
3133 * for this STA, update the PVB for this
3134 * STA.
3135 */
3136 if (is_psq_empty)
3137 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3138 conn->aid, 1);
3139 return true;
3140 }
3141
3142 /*
3143 * This tx is because of a PsPoll.
3144 * Determine if MoreData bit has to be set.
3145 */
3146 spin_lock_bh(&conn->psq_lock);
3147 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3148 *more_data = true;
3149 spin_unlock_bh(&conn->psq_lock);
3150 }
3151
3152 return false;
3153 }
3154
3155 /* Check if SSID length is greater than DIRECT- */
3156 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3157 {
3158 const struct ieee80211_mgmt *mgmt;
3159 mgmt = (const struct ieee80211_mgmt *) buf;
3160
3161 /* variable[1] contains the SSID tag length */
3162 if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3163 (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3164 return true;
3165 }
3166
3167 return false;
3168 }
3169
3170 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3171 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
3172 {
3173 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3174 struct ath6kl *ar = ath6kl_priv(vif->ndev);
3175 struct ieee80211_channel *chan = params->chan;
3176 const u8 *buf = params->buf;
3177 size_t len = params->len;
3178 unsigned int wait = params->wait;
3179 bool no_cck = params->no_cck;
3180 u32 id, freq;
3181 const struct ieee80211_mgmt *mgmt;
3182 bool more_data, queued;
3183
3184 /* default to the current channel, but use the one specified as argument
3185 * if any
3186 */
3187 freq = vif->ch_hint;
3188 if (chan)
3189 freq = chan->center_freq;
3190
3191 /* never send freq zero to the firmware */
3192 if (WARN_ON(freq == 0))
3193 return -EINVAL;
3194
3195 mgmt = (const struct ieee80211_mgmt *) buf;
3196 if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3197 ieee80211_is_probe_resp(mgmt->frame_control) &&
3198 ath6kl_is_p2p_go_ssid(buf, len)) {
3199 /*
3200 * Send Probe Response frame in GO mode using a separate WMI
3201 * command to allow the target to fill in the generic IEs.
3202 */
3203 *cookie = 0; /* TX status not supported */
3204 return ath6kl_send_go_probe_resp(vif, buf, len, freq);
3205 }
3206
3207 id = vif->send_action_id++;
3208 if (id == 0) {
3209 /*
3210 * 0 is a reserved value in the WMI command and shall not be
3211 * used for the command.
3212 */
3213 id = vif->send_action_id++;
3214 }
3215
3216 *cookie = id;
3217
3218 /* AP mode Power saving processing */
3219 if (vif->nw_type == AP_NETWORK) {
3220 queued = ath6kl_mgmt_powersave_ap(vif, id, freq, wait, buf, len,
3221 &more_data, no_cck);
3222 if (queued)
3223 return 0;
3224 }
3225
3226 return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id, freq,
3227 wait, buf, len, no_cck);
3228 }
3229
3230 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3231 struct wireless_dev *wdev,
3232 u16 frame_type, bool reg)
3233 {
3234 struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3235
3236 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3237 __func__, frame_type, reg);
3238 if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3239 /*
3240 * Note: This notification callback is not allowed to sleep, so
3241 * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3242 * hardcode target to report Probe Request frames all the time.
3243 */
3244 vif->probe_req_report = reg;
3245 }
3246 }
3247
3248 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3249 struct net_device *dev,
3250 struct cfg80211_sched_scan_request *request)
3251 {
3252 struct ath6kl *ar = ath6kl_priv(dev);
3253 struct ath6kl_vif *vif = netdev_priv(dev);
3254 u16 interval;
3255 int ret, rssi_thold;
3256 int n_match_sets = request->n_match_sets;
3257
3258 /*
3259 * If there's a matchset w/o an SSID, then assume it's just for
3260 * the RSSI (nothing else is currently supported) and ignore it.
3261 * The device only supports a global RSSI filter that we set below.
3262 */
3263 if (n_match_sets == 1 && !request->match_sets[0].ssid.ssid_len)
3264 n_match_sets = 0;
3265
3266 if (ar->state != ATH6KL_STATE_ON)
3267 return -EIO;
3268
3269 if (vif->sme_state != SME_DISCONNECTED)
3270 return -EBUSY;
3271
3272 ath6kl_cfg80211_scan_complete_event(vif, true);
3273
3274 ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3275 request->n_ssids,
3276 request->match_sets,
3277 n_match_sets);
3278 if (ret < 0)
3279 return ret;
3280
3281 if (!n_match_sets) {
3282 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3283 ALL_BSS_FILTER, 0);
3284 if (ret < 0)
3285 return ret;
3286 } else {
3287 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3288 MATCHED_SSID_FILTER, 0);
3289 if (ret < 0)
3290 return ret;
3291 }
3292
3293 if (test_bit(ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD,
3294 ar->fw_capabilities)) {
3295 if (request->min_rssi_thold <= NL80211_SCAN_RSSI_THOLD_OFF)
3296 rssi_thold = 0;
3297 else if (request->min_rssi_thold < -127)
3298 rssi_thold = -127;
3299 else
3300 rssi_thold = request->min_rssi_thold;
3301
3302 ret = ath6kl_wmi_set_rssi_filter_cmd(ar->wmi, vif->fw_vif_idx,
3303 rssi_thold);
3304 if (ret) {
3305 ath6kl_err("failed to set RSSI threshold for scan\n");
3306 return ret;
3307 }
3308 }
3309
3310 /* fw uses seconds, also make sure that it's >0 */
3311 interval = max_t(u16, 1, request->interval / 1000);
3312
3313 ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3314 interval, interval,
3315 vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3316
3317 /* this also clears IE in fw if it's not set */
3318 ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3319 WMI_FRAME_PROBE_REQ,
3320 request->ie, request->ie_len);
3321 if (ret) {
3322 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n",
3323 ret);
3324 return ret;
3325 }
3326
3327 ret = ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, true);
3328 if (ret)
3329 return ret;
3330
3331 set_bit(SCHED_SCANNING, &vif->flags);
3332
3333 return 0;
3334 }
3335
3336 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3337 struct net_device *dev)
3338 {
3339 struct ath6kl_vif *vif = netdev_priv(dev);
3340 bool stopped;
3341
3342 stopped = __ath6kl_cfg80211_sscan_stop(vif);
3343
3344 if (!stopped)
3345 return -EIO;
3346
3347 return 0;
3348 }
3349
3350 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy,
3351 struct net_device *dev,
3352 const u8 *addr,
3353 const struct cfg80211_bitrate_mask *mask)
3354 {
3355 struct ath6kl *ar = ath6kl_priv(dev);
3356 struct ath6kl_vif *vif = netdev_priv(dev);
3357
3358 return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx,
3359 mask);
3360 }
3361
3362 static int ath6kl_cfg80211_set_txe_config(struct wiphy *wiphy,
3363 struct net_device *dev,
3364 u32 rate, u32 pkts, u32 intvl)
3365 {
3366 struct ath6kl *ar = ath6kl_priv(dev);
3367 struct ath6kl_vif *vif = netdev_priv(dev);
3368
3369 if (vif->nw_type != INFRA_NETWORK ||
3370 !test_bit(ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, ar->fw_capabilities))
3371 return -EOPNOTSUPP;
3372
3373 if (vif->sme_state != SME_CONNECTED)
3374 return -ENOTCONN;
3375
3376 /* save this since the firmware won't report the interval */
3377 vif->txe_intvl = intvl;
3378
3379 return ath6kl_wmi_set_txe_notify(ar->wmi, vif->fw_vif_idx,
3380 rate, pkts, intvl);
3381 }
3382
3383 static const struct ieee80211_txrx_stypes
3384 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3385 [NL80211_IFTYPE_STATION] = {
3386 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3387 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3388 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3389 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3390 },
3391 [NL80211_IFTYPE_AP] = {
3392 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3393 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3394 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3395 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3396 },
3397 [NL80211_IFTYPE_P2P_CLIENT] = {
3398 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3399 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3400 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3401 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3402 },
3403 [NL80211_IFTYPE_P2P_GO] = {
3404 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3405 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3406 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3407 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3408 },
3409 };
3410
3411 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3412 .add_virtual_intf = ath6kl_cfg80211_add_iface,
3413 .del_virtual_intf = ath6kl_cfg80211_del_iface,
3414 .change_virtual_intf = ath6kl_cfg80211_change_iface,
3415 .scan = ath6kl_cfg80211_scan,
3416 .connect = ath6kl_cfg80211_connect,
3417 .disconnect = ath6kl_cfg80211_disconnect,
3418 .add_key = ath6kl_cfg80211_add_key,
3419 .get_key = ath6kl_cfg80211_get_key,
3420 .del_key = ath6kl_cfg80211_del_key,
3421 .set_default_key = ath6kl_cfg80211_set_default_key,
3422 .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3423 .set_tx_power = ath6kl_cfg80211_set_txpower,
3424 .get_tx_power = ath6kl_cfg80211_get_txpower,
3425 .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3426 .join_ibss = ath6kl_cfg80211_join_ibss,
3427 .leave_ibss = ath6kl_cfg80211_leave_ibss,
3428 .get_station = ath6kl_get_station,
3429 .set_pmksa = ath6kl_set_pmksa,
3430 .del_pmksa = ath6kl_del_pmksa,
3431 .flush_pmksa = ath6kl_flush_pmksa,
3432 CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3433 #ifdef CONFIG_PM
3434 .suspend = __ath6kl_cfg80211_suspend,
3435 .resume = __ath6kl_cfg80211_resume,
3436 #endif
3437 .start_ap = ath6kl_start_ap,
3438 .change_beacon = ath6kl_change_beacon,
3439 .stop_ap = ath6kl_stop_ap,
3440 .del_station = ath6kl_del_station,
3441 .change_station = ath6kl_change_station,
3442 .remain_on_channel = ath6kl_remain_on_channel,
3443 .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3444 .mgmt_tx = ath6kl_mgmt_tx,
3445 .mgmt_frame_register = ath6kl_mgmt_frame_register,
3446 .sched_scan_start = ath6kl_cfg80211_sscan_start,
3447 .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3448 .set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
3449 .set_cqm_txe_config = ath6kl_cfg80211_set_txe_config,
3450 };
3451
3452 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3453 {
3454 ath6kl_cfg80211_sscan_disable(vif);
3455
3456 switch (vif->sme_state) {
3457 case SME_DISCONNECTED:
3458 break;
3459 case SME_CONNECTING:
3460 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3461 NULL, 0,
3462 WLAN_STATUS_UNSPECIFIED_FAILURE,
3463 GFP_KERNEL);
3464 break;
3465 case SME_CONNECTED:
3466 cfg80211_disconnected(vif->ndev, 0, NULL, 0, GFP_KERNEL);
3467 break;
3468 }
3469
3470 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3471 (test_bit(CONNECTED, &vif->flags) ||
3472 test_bit(CONNECT_PEND, &vif->flags)))
3473 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3474
3475 vif->sme_state = SME_DISCONNECTED;
3476 clear_bit(CONNECTED, &vif->flags);
3477 clear_bit(CONNECT_PEND, &vif->flags);
3478
3479 /* Stop netdev queues, needed during recovery */
3480 netif_stop_queue(vif->ndev);
3481 netif_carrier_off(vif->ndev);
3482
3483 /* disable scanning */
3484 if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3485 ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3486 0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3487 ath6kl_warn("failed to disable scan during stop\n");
3488
3489 ath6kl_cfg80211_scan_complete_event(vif, true);
3490 }
3491
3492 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3493 {
3494 struct ath6kl_vif *vif;
3495
3496 vif = ath6kl_vif_first(ar);
3497 if (!vif && ar->state != ATH6KL_STATE_RECOVERY) {
3498 /* save the current power mode before enabling power save */
3499 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3500
3501 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3502 ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3503 return;
3504 }
3505
3506 /*
3507 * FIXME: we should take ar->list_lock to protect changes in the
3508 * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3509 * sleeps.
3510 */
3511 list_for_each_entry(vif, &ar->vif_list, list)
3512 ath6kl_cfg80211_stop(vif);
3513 }
3514
3515 static void ath6kl_cfg80211_reg_notify(struct wiphy *wiphy,
3516 struct regulatory_request *request)
3517 {
3518 struct ath6kl *ar = wiphy_priv(wiphy);
3519 u32 rates[IEEE80211_NUM_BANDS];
3520 int ret, i;
3521
3522 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
3523 "cfg reg_notify %c%c%s%s initiator %d hint_type %d\n",
3524 request->alpha2[0], request->alpha2[1],
3525 request->intersect ? " intersect" : "",
3526 request->processed ? " processed" : "",
3527 request->initiator, request->user_reg_hint_type);
3528
3529 if (request->user_reg_hint_type != NL80211_USER_REG_HINT_CELL_BASE)
3530 return;
3531
3532 ret = ath6kl_wmi_set_regdomain_cmd(ar->wmi, request->alpha2);
3533 if (ret) {
3534 ath6kl_err("failed to set regdomain: %d\n", ret);
3535 return;
3536 }
3537
3538 /*
3539 * Firmware will apply the regdomain change only after a scan is
3540 * issued and it will send a WMI_REGDOMAIN_EVENTID when it has been
3541 * changed.
3542 */
3543
3544 for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3545 if (wiphy->bands[i])
3546 rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
3547
3548
3549 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, 0, WMI_LONG_SCAN, false,
3550 false, 0, ATH6KL_FG_SCAN_INTERVAL,
3551 0, NULL, false, rates);
3552 if (ret) {
3553 ath6kl_err("failed to start scan for a regdomain change: %d\n",
3554 ret);
3555 return;
3556 }
3557 }
3558
3559 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3560 {
3561 vif->aggr_cntxt = aggr_init(vif);
3562 if (!vif->aggr_cntxt) {
3563 ath6kl_err("failed to initialize aggr\n");
3564 return -ENOMEM;
3565 }
3566
3567 setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3568 (unsigned long) vif->ndev);
3569 setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3570 (unsigned long) vif);
3571
3572 set_bit(WMM_ENABLED, &vif->flags);
3573 spin_lock_init(&vif->if_lock);
3574
3575 INIT_LIST_HEAD(&vif->mc_filter);
3576
3577 return 0;
3578 }
3579
3580 void ath6kl_cfg80211_vif_stop(struct ath6kl_vif *vif, bool wmi_ready)
3581 {
3582 static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
3583 bool discon_issued;
3584
3585 netif_stop_queue(vif->ndev);
3586
3587 clear_bit(WLAN_ENABLED, &vif->flags);
3588
3589 if (wmi_ready) {
3590 discon_issued = test_bit(CONNECTED, &vif->flags) ||
3591 test_bit(CONNECT_PEND, &vif->flags);
3592 ath6kl_disconnect(vif);
3593 del_timer(&vif->disconnect_timer);
3594
3595 if (discon_issued)
3596 ath6kl_disconnect_event(vif, DISCONNECT_CMD,
3597 (vif->nw_type & AP_NETWORK) ?
3598 bcast_mac : vif->bssid,
3599 0, NULL, 0);
3600 }
3601
3602 if (vif->scan_req) {
3603 cfg80211_scan_done(vif->scan_req, true);
3604 vif->scan_req = NULL;
3605 }
3606
3607 /* need to clean up enhanced bmiss detection fw state */
3608 ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
3609 }
3610
3611 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3612 {
3613 struct ath6kl *ar = vif->ar;
3614 struct ath6kl_mc_filter *mc_filter, *tmp;
3615
3616 aggr_module_destroy(vif->aggr_cntxt);
3617
3618 ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3619
3620 if (vif->nw_type == ADHOC_NETWORK)
3621 ar->ibss_if_active = false;
3622
3623 list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3624 list_del(&mc_filter->list);
3625 kfree(mc_filter);
3626 }
3627
3628 unregister_netdevice(vif->ndev);
3629
3630 ar->num_vif--;
3631 }
3632
3633 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
3634 enum nl80211_iftype type,
3635 u8 fw_vif_idx, u8 nw_type)
3636 {
3637 struct net_device *ndev;
3638 struct ath6kl_vif *vif;
3639
3640 ndev = alloc_netdev(sizeof(*vif), name, ether_setup);
3641 if (!ndev)
3642 return NULL;
3643
3644 vif = netdev_priv(ndev);
3645 ndev->ieee80211_ptr = &vif->wdev;
3646 vif->wdev.wiphy = ar->wiphy;
3647 vif->ar = ar;
3648 vif->ndev = ndev;
3649 SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3650 vif->wdev.netdev = ndev;
3651 vif->wdev.iftype = type;
3652 vif->fw_vif_idx = fw_vif_idx;
3653 vif->nw_type = nw_type;
3654 vif->next_mode = nw_type;
3655 vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3656 vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3657 vif->bg_scan_period = 0;
3658 vif->htcap[IEEE80211_BAND_2GHZ].ht_enable = true;
3659 vif->htcap[IEEE80211_BAND_5GHZ].ht_enable = true;
3660
3661 memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3662 if (fw_vif_idx != 0) {
3663 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3664 0x2;
3665 if (test_bit(ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR,
3666 ar->fw_capabilities))
3667 ndev->dev_addr[4] ^= 0x80;
3668 }
3669
3670 init_netdev(ndev);
3671
3672 ath6kl_init_control_info(vif);
3673
3674 if (ath6kl_cfg80211_vif_init(vif))
3675 goto err;
3676
3677 if (register_netdevice(ndev))
3678 goto err;
3679
3680 ar->avail_idx_map &= ~BIT(fw_vif_idx);
3681 vif->sme_state = SME_DISCONNECTED;
3682 set_bit(WLAN_ENABLED, &vif->flags);
3683 ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3684
3685 if (type == NL80211_IFTYPE_ADHOC)
3686 ar->ibss_if_active = true;
3687
3688 spin_lock_bh(&ar->list_lock);
3689 list_add_tail(&vif->list, &ar->vif_list);
3690 spin_unlock_bh(&ar->list_lock);
3691
3692 return &vif->wdev;
3693
3694 err:
3695 aggr_module_destroy(vif->aggr_cntxt);
3696 free_netdev(ndev);
3697 return NULL;
3698 }
3699
3700 #ifdef CONFIG_PM
3701 static const struct wiphy_wowlan_support ath6kl_wowlan_support = {
3702 .flags = WIPHY_WOWLAN_MAGIC_PKT |
3703 WIPHY_WOWLAN_DISCONNECT |
3704 WIPHY_WOWLAN_GTK_REKEY_FAILURE |
3705 WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
3706 WIPHY_WOWLAN_EAP_IDENTITY_REQ |
3707 WIPHY_WOWLAN_4WAY_HANDSHAKE,
3708 .n_patterns = WOW_MAX_FILTERS_PER_LIST,
3709 .pattern_min_len = 1,
3710 .pattern_max_len = WOW_PATTERN_SIZE,
3711 };
3712 #endif
3713
3714 int ath6kl_cfg80211_init(struct ath6kl *ar)
3715 {
3716 struct wiphy *wiphy = ar->wiphy;
3717 bool band_2gig = false, band_5gig = false, ht = false;
3718 int ret;
3719
3720 wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3721
3722 wiphy->max_remain_on_channel_duration = 5000;
3723
3724 /* set device pointer for wiphy */
3725 set_wiphy_dev(wiphy, ar->dev);
3726
3727 wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3728 BIT(NL80211_IFTYPE_ADHOC) |
3729 BIT(NL80211_IFTYPE_AP);
3730 if (ar->p2p) {
3731 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3732 BIT(NL80211_IFTYPE_P2P_CLIENT);
3733 }
3734
3735 if (config_enabled(CONFIG_ATH6KL_REGDOMAIN) &&
3736 test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) {
3737 wiphy->reg_notifier = ath6kl_cfg80211_reg_notify;
3738 ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS;
3739 }
3740
3741 /* max num of ssids that can be probed during scanning */
3742 wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3743
3744 /* max num of ssids that can be matched after scan */
3745 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST,
3746 ar->fw_capabilities))
3747 wiphy->max_match_sets = MAX_PROBED_SSIDS;
3748
3749 wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3750 switch (ar->hw.cap) {
3751 case WMI_11AN_CAP:
3752 ht = true;
3753 case WMI_11A_CAP:
3754 band_5gig = true;
3755 break;
3756 case WMI_11GN_CAP:
3757 ht = true;
3758 case WMI_11G_CAP:
3759 band_2gig = true;
3760 break;
3761 case WMI_11AGN_CAP:
3762 ht = true;
3763 case WMI_11AG_CAP:
3764 band_2gig = true;
3765 band_5gig = true;
3766 break;
3767 default:
3768 ath6kl_err("invalid phy capability!\n");
3769 return -EINVAL;
3770 }
3771
3772 /*
3773 * Even if the fw has HT support, advertise HT cap only when
3774 * the firmware has support to override RSN capability, otherwise
3775 * 4-way handshake would fail.
3776 */
3777 if (!(ht &&
3778 test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3779 ar->fw_capabilities))) {
3780 ath6kl_band_2ghz.ht_cap.cap = 0;
3781 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3782 ath6kl_band_5ghz.ht_cap.cap = 0;
3783 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3784 }
3785
3786 if (test_bit(ATH6KL_FW_CAPABILITY_64BIT_RATES,
3787 ar->fw_capabilities)) {
3788 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3789 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3790 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3791 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3792 } else {
3793 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3794 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3795 }
3796
3797 if (band_2gig)
3798 wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3799 if (band_5gig)
3800 wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3801
3802 wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3803
3804 wiphy->cipher_suites = cipher_suites;
3805 wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3806
3807 #ifdef CONFIG_PM
3808 wiphy->wowlan = &ath6kl_wowlan_support;
3809 #endif
3810
3811 wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3812
3813 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3814 WIPHY_FLAG_HAVE_AP_SME |
3815 WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3816 WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3817
3818 if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities))
3819 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
3820
3821 if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3822 ar->fw_capabilities))
3823 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
3824
3825 ar->wiphy->probe_resp_offload =
3826 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3827 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3828 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3829
3830 ret = wiphy_register(wiphy);
3831 if (ret < 0) {
3832 ath6kl_err("couldn't register wiphy device\n");
3833 return ret;
3834 }
3835
3836 ar->wiphy_registered = true;
3837
3838 return 0;
3839 }
3840
3841 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
3842 {
3843 wiphy_unregister(ar->wiphy);
3844
3845 ar->wiphy_registered = false;
3846 }
3847
3848 struct ath6kl *ath6kl_cfg80211_create(void)
3849 {
3850 struct ath6kl *ar;
3851 struct wiphy *wiphy;
3852
3853 /* create a new wiphy for use with cfg80211 */
3854 wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
3855
3856 if (!wiphy) {
3857 ath6kl_err("couldn't allocate wiphy device\n");
3858 return NULL;
3859 }
3860
3861 ar = wiphy_priv(wiphy);
3862 ar->wiphy = wiphy;
3863
3864 return ar;
3865 }
3866
3867 /* Note: ar variable must not be accessed after calling this! */
3868 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
3869 {
3870 int i;
3871
3872 for (i = 0; i < AP_MAX_NUM_STA; i++)
3873 kfree(ar->sta_list[i].aggr_conn);
3874
3875 wiphy_free(ar->wiphy);
3876 }
3877
Linux kernel - Deliverables
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