ath6kl: minor optimization using if, else if
[~shefty/rdma-dev.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 >> i) & BIT(0)) {
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 >> i) & BIT(0)) {
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         return bss;
731 }
732
733 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
734                                    u8 *bssid, u16 listen_intvl,
735                                    u16 beacon_intvl,
736                                    enum network_type nw_type,
737                                    u8 beacon_ie_len, u8 assoc_req_len,
738                                    u8 assoc_resp_len, u8 *assoc_info)
739 {
740         struct ieee80211_channel *chan;
741         struct ath6kl *ar = vif->ar;
742         struct cfg80211_bss *bss;
743
744         /* capinfo + listen interval */
745         u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
746
747         /* capinfo + status code +  associd */
748         u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
749
750         u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
751         u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
752             assoc_resp_ie_offset;
753
754         assoc_req_len -= assoc_req_ie_offset;
755         assoc_resp_len -= assoc_resp_ie_offset;
756
757         /*
758          * Store Beacon interval here; DTIM period will be available only once
759          * a Beacon frame from the AP is seen.
760          */
761         vif->assoc_bss_beacon_int = beacon_intvl;
762         clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
763
764         if (nw_type & ADHOC_NETWORK) {
765                 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
766                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
767                                    "%s: ath6k not in ibss mode\n", __func__);
768                         return;
769                 }
770         }
771
772         if (nw_type & INFRA_NETWORK) {
773                 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
774                     vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
775                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
776                                    "%s: ath6k not in station mode\n", __func__);
777                         return;
778                 }
779         }
780
781         chan = ieee80211_get_channel(ar->wiphy, (int) channel);
782
783         bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
784                                        assoc_info, beacon_ie_len);
785         if (!bss) {
786                 ath6kl_err("could not add cfg80211 bss entry\n");
787                 return;
788         }
789
790         if (nw_type & ADHOC_NETWORK) {
791                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
792                            nw_type & ADHOC_CREATOR ? "creator" : "joiner");
793                 cfg80211_ibss_joined(vif->ndev, bssid, GFP_KERNEL);
794                 cfg80211_put_bss(bss);
795                 return;
796         }
797
798         if (vif->sme_state == SME_CONNECTING) {
799                 /* inform connect result to cfg80211 */
800                 vif->sme_state = SME_CONNECTED;
801                 cfg80211_connect_result(vif->ndev, bssid,
802                                         assoc_req_ie, assoc_req_len,
803                                         assoc_resp_ie, assoc_resp_len,
804                                         WLAN_STATUS_SUCCESS, GFP_KERNEL);
805                 cfg80211_put_bss(bss);
806         } else if (vif->sme_state == SME_CONNECTED) {
807                 /* inform roam event to cfg80211 */
808                 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len,
809                                     assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
810         }
811 }
812
813 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
814                                       struct net_device *dev, u16 reason_code)
815 {
816         struct ath6kl *ar = ath6kl_priv(dev);
817         struct ath6kl_vif *vif = netdev_priv(dev);
818
819         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
820                    reason_code);
821
822         ath6kl_cfg80211_sscan_disable(vif);
823
824         if (!ath6kl_cfg80211_ready(vif))
825                 return -EIO;
826
827         if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
828                 ath6kl_err("busy, destroy in progress\n");
829                 return -EBUSY;
830         }
831
832         if (down_interruptible(&ar->sem)) {
833                 ath6kl_err("busy, couldn't get access\n");
834                 return -ERESTARTSYS;
835         }
836
837         vif->reconnect_flag = 0;
838         ath6kl_disconnect(vif);
839         memset(vif->ssid, 0, sizeof(vif->ssid));
840         vif->ssid_len = 0;
841
842         if (!test_bit(SKIP_SCAN, &ar->flag))
843                 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
844
845         up(&ar->sem);
846
847         vif->sme_state = SME_DISCONNECTED;
848
849         return 0;
850 }
851
852 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
853                                       u8 *bssid, u8 assoc_resp_len,
854                                       u8 *assoc_info, u16 proto_reason)
855 {
856         struct ath6kl *ar = vif->ar;
857
858         if (vif->scan_req) {
859                 cfg80211_scan_done(vif->scan_req, true);
860                 vif->scan_req = NULL;
861         }
862
863         if (vif->nw_type & ADHOC_NETWORK) {
864                 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
865                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
866                                    "%s: ath6k not in ibss mode\n", __func__);
867                         return;
868                 }
869                 memset(bssid, 0, ETH_ALEN);
870                 cfg80211_ibss_joined(vif->ndev, bssid, GFP_KERNEL);
871                 return;
872         }
873
874         if (vif->nw_type & INFRA_NETWORK) {
875                 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
876                     vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
877                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
878                                    "%s: ath6k not in station mode\n", __func__);
879                         return;
880                 }
881         }
882
883         clear_bit(CONNECT_PEND, &vif->flags);
884
885         if (vif->sme_state == SME_CONNECTING) {
886                 cfg80211_connect_result(vif->ndev,
887                                         bssid, NULL, 0,
888                                         NULL, 0,
889                                         WLAN_STATUS_UNSPECIFIED_FAILURE,
890                                         GFP_KERNEL);
891         } else if (vif->sme_state == SME_CONNECTED) {
892                 cfg80211_disconnected(vif->ndev, proto_reason,
893                                       NULL, 0, GFP_KERNEL);
894         }
895
896         vif->sme_state = SME_DISCONNECTED;
897
898         /*
899          * Send a disconnect command to target when a disconnect event is
900          * received with reason code other than 3 (DISCONNECT_CMD - disconnect
901          * request from host) to make the firmware stop trying to connect even
902          * after giving disconnect event. There will be one more disconnect
903          * event for this disconnect command with reason code DISCONNECT_CMD
904          * which won't be notified to cfg80211.
905          */
906         if (reason != DISCONNECT_CMD)
907                 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
908 }
909
910 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
911                                    struct ath6kl_vif *vif,
912                                    struct cfg80211_ssid *ssids, int n_ssids,
913                                    struct cfg80211_match_set *match_set,
914                                    int n_match_ssid)
915 {
916         u8 i, j, index_to_add, ssid_found = false;
917         struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS];
918
919         memset(ssid_list, 0, sizeof(ssid_list));
920
921         if (n_ssids > MAX_PROBED_SSIDS ||
922             n_match_ssid > MAX_PROBED_SSIDS)
923                 return -EINVAL;
924
925         for (i = 0; i < n_ssids; i++) {
926                 memcpy(ssid_list[i].ssid.ssid,
927                        ssids[i].ssid,
928                        ssids[i].ssid_len);
929                 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len;
930
931                 if (ssids[i].ssid_len)
932                         ssid_list[i].flag = SPECIFIC_SSID_FLAG;
933                 else
934                         ssid_list[i].flag = ANY_SSID_FLAG;
935
936                 if (n_match_ssid == 0)
937                         ssid_list[i].flag |= MATCH_SSID_FLAG;
938         }
939
940         index_to_add = i;
941
942         for (i = 0; i < n_match_ssid; i++) {
943                 ssid_found = false;
944
945                 for (j = 0; j < n_ssids; j++) {
946                         if ((match_set[i].ssid.ssid_len ==
947                              ssid_list[j].ssid.ssid_len) &&
948                             (!memcmp(ssid_list[j].ssid.ssid,
949                                      match_set[i].ssid.ssid,
950                                      match_set[i].ssid.ssid_len))) {
951                                 ssid_list[j].flag |= MATCH_SSID_FLAG;
952                                 ssid_found = true;
953                                 break;
954                         }
955                 }
956
957                 if (ssid_found)
958                         continue;
959
960                 if (index_to_add >= MAX_PROBED_SSIDS)
961                         continue;
962
963                 ssid_list[index_to_add].ssid.ssid_len =
964                         match_set[i].ssid.ssid_len;
965                 memcpy(ssid_list[index_to_add].ssid.ssid,
966                        match_set[i].ssid.ssid,
967                        match_set[i].ssid.ssid_len);
968                 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG;
969                 index_to_add++;
970         }
971
972         for (i = 0; i < index_to_add; i++) {
973                 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
974                                           ssid_list[i].flag,
975                                           ssid_list[i].ssid.ssid_len,
976                                           ssid_list[i].ssid.ssid);
977
978         }
979
980         /* Make sure no old entries are left behind */
981         for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) {
982                 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
983                                           DISABLE_SSID_FLAG, 0, NULL);
984         }
985
986         return 0;
987 }
988
989 static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
990                                 struct cfg80211_scan_request *request)
991 {
992         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
993         struct ath6kl *ar = ath6kl_priv(vif->ndev);
994         s8 n_channels = 0;
995         u16 *channels = NULL;
996         int ret = 0;
997         u32 force_fg_scan = 0;
998
999         if (!ath6kl_cfg80211_ready(vif))
1000                 return -EIO;
1001
1002         ath6kl_cfg80211_sscan_disable(vif);
1003
1004         if (!ar->usr_bss_filter) {
1005                 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1006                 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1007                                                ALL_BSS_FILTER, 0);
1008                 if (ret) {
1009                         ath6kl_err("couldn't set bss filtering\n");
1010                         return ret;
1011                 }
1012         }
1013
1014         ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
1015                                       request->n_ssids, NULL, 0);
1016         if (ret < 0)
1017                 return ret;
1018
1019         /* this also clears IE in fw if it's not set */
1020         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
1021                                        WMI_FRAME_PROBE_REQ,
1022                                        request->ie, request->ie_len);
1023         if (ret) {
1024                 ath6kl_err("failed to set Probe Request appie for scan\n");
1025                 return ret;
1026         }
1027
1028         /*
1029          * Scan only the requested channels if the request specifies a set of
1030          * channels. If the list is longer than the target supports, do not
1031          * configure the list and instead, scan all available channels.
1032          */
1033         if (request->n_channels > 0 &&
1034             request->n_channels <= WMI_MAX_CHANNELS) {
1035                 u8 i;
1036
1037                 n_channels = request->n_channels;
1038
1039                 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
1040                 if (channels == NULL) {
1041                         ath6kl_warn("failed to set scan channels, scan all channels");
1042                         n_channels = 0;
1043                 }
1044
1045                 for (i = 0; i < n_channels; i++)
1046                         channels[i] = request->channels[i]->center_freq;
1047         }
1048
1049         if (test_bit(CONNECTED, &vif->flags))
1050                 force_fg_scan = 1;
1051
1052         vif->scan_req = request;
1053
1054         ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
1055                                        WMI_LONG_SCAN, force_fg_scan,
1056                                        false, 0,
1057                                        ATH6KL_FG_SCAN_INTERVAL,
1058                                        n_channels, channels,
1059                                        request->no_cck,
1060                                        request->rates);
1061         if (ret) {
1062                 ath6kl_err("failed to start scan: %d\n", ret);
1063                 vif->scan_req = NULL;
1064         }
1065
1066         kfree(channels);
1067
1068         return ret;
1069 }
1070
1071 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1072 {
1073         struct ath6kl *ar = vif->ar;
1074         int i;
1075
1076         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1077                    aborted ? " aborted" : "");
1078
1079         if (!vif->scan_req)
1080                 return;
1081
1082         if (aborted)
1083                 goto out;
1084
1085         if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1086                 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1087                         ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1088                                                   i + 1, DISABLE_SSID_FLAG,
1089                                                   0, NULL);
1090                 }
1091         }
1092
1093 out:
1094         cfg80211_scan_done(vif->scan_req, aborted);
1095         vif->scan_req = NULL;
1096 }
1097
1098 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1099                                       enum wmi_phy_mode mode)
1100 {
1101         enum nl80211_channel_type type;
1102
1103         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1104                    "channel switch notify nw_type %d freq %d mode %d\n",
1105                    vif->nw_type, freq, mode);
1106
1107         type = (mode == WMI_11G_HT20) ? NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT;
1108
1109         cfg80211_ch_switch_notify(vif->ndev, freq, type);
1110 }
1111
1112 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1113                                    u8 key_index, bool pairwise,
1114                                    const u8 *mac_addr,
1115                                    struct key_params *params)
1116 {
1117         struct ath6kl *ar = ath6kl_priv(ndev);
1118         struct ath6kl_vif *vif = netdev_priv(ndev);
1119         struct ath6kl_key *key = NULL;
1120         int seq_len;
1121         u8 key_usage;
1122         u8 key_type;
1123
1124         if (!ath6kl_cfg80211_ready(vif))
1125                 return -EIO;
1126
1127         if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1128                 if (params->key_len != WMI_KRK_LEN)
1129                         return -EINVAL;
1130                 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1131                                               params->key);
1132         }
1133
1134         if (key_index > WMI_MAX_KEY_INDEX) {
1135                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1136                            "%s: key index %d out of bounds\n", __func__,
1137                            key_index);
1138                 return -ENOENT;
1139         }
1140
1141         key = &vif->keys[key_index];
1142         memset(key, 0, sizeof(struct ath6kl_key));
1143
1144         if (pairwise)
1145                 key_usage = PAIRWISE_USAGE;
1146         else
1147                 key_usage = GROUP_USAGE;
1148
1149         seq_len = params->seq_len;
1150         if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1151             seq_len > ATH6KL_KEY_SEQ_LEN) {
1152                 /* Only first half of the WPI PN is configured */
1153                 seq_len = ATH6KL_KEY_SEQ_LEN;
1154         }
1155         if (params->key_len > WLAN_MAX_KEY_LEN ||
1156             seq_len > sizeof(key->seq))
1157                 return -EINVAL;
1158
1159         key->key_len = params->key_len;
1160         memcpy(key->key, params->key, key->key_len);
1161         key->seq_len = seq_len;
1162         memcpy(key->seq, params->seq, key->seq_len);
1163         key->cipher = params->cipher;
1164
1165         switch (key->cipher) {
1166         case WLAN_CIPHER_SUITE_WEP40:
1167         case WLAN_CIPHER_SUITE_WEP104:
1168                 key_type = WEP_CRYPT;
1169                 break;
1170
1171         case WLAN_CIPHER_SUITE_TKIP:
1172                 key_type = TKIP_CRYPT;
1173                 break;
1174
1175         case WLAN_CIPHER_SUITE_CCMP:
1176                 key_type = AES_CRYPT;
1177                 break;
1178         case WLAN_CIPHER_SUITE_SMS4:
1179                 key_type = WAPI_CRYPT;
1180                 break;
1181
1182         default:
1183                 return -ENOTSUPP;
1184         }
1185
1186         if (((vif->auth_mode == WPA_PSK_AUTH) ||
1187              (vif->auth_mode == WPA2_PSK_AUTH)) &&
1188             (key_usage & GROUP_USAGE))
1189                 del_timer(&vif->disconnect_timer);
1190
1191         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1192                    "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1193                    __func__, key_index, key->key_len, key_type,
1194                    key_usage, key->seq_len);
1195
1196         if (vif->nw_type == AP_NETWORK && !pairwise &&
1197             (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1198              key_type == WAPI_CRYPT)) {
1199                 ar->ap_mode_bkey.valid = true;
1200                 ar->ap_mode_bkey.key_index = key_index;
1201                 ar->ap_mode_bkey.key_type = key_type;
1202                 ar->ap_mode_bkey.key_len = key->key_len;
1203                 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1204                 if (!test_bit(CONNECTED, &vif->flags)) {
1205                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1206                                    "Delay initial group key configuration until AP mode has been started\n");
1207                         /*
1208                          * The key will be set in ath6kl_connect_ap_mode() once
1209                          * the connected event is received from the target.
1210                          */
1211                         return 0;
1212                 }
1213         }
1214
1215         if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1216             !test_bit(CONNECTED, &vif->flags)) {
1217                 /*
1218                  * Store the key locally so that it can be re-configured after
1219                  * the AP mode has properly started
1220                  * (ath6kl_install_statioc_wep_keys).
1221                  */
1222                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1223                            "Delay WEP key configuration until AP mode has been started\n");
1224                 vif->wep_key_list[key_index].key_len = key->key_len;
1225                 memcpy(vif->wep_key_list[key_index].key, key->key,
1226                        key->key_len);
1227                 return 0;
1228         }
1229
1230         return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1231                                      key_type, key_usage, key->key_len,
1232                                      key->seq, key->seq_len, key->key,
1233                                      KEY_OP_INIT_VAL,
1234                                      (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1235 }
1236
1237 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1238                                    u8 key_index, bool pairwise,
1239                                    const u8 *mac_addr)
1240 {
1241         struct ath6kl *ar = ath6kl_priv(ndev);
1242         struct ath6kl_vif *vif = netdev_priv(ndev);
1243
1244         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1245
1246         if (!ath6kl_cfg80211_ready(vif))
1247                 return -EIO;
1248
1249         if (key_index > WMI_MAX_KEY_INDEX) {
1250                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1251                            "%s: key index %d out of bounds\n", __func__,
1252                            key_index);
1253                 return -ENOENT;
1254         }
1255
1256         if (!vif->keys[key_index].key_len) {
1257                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1258                            "%s: index %d is empty\n", __func__, key_index);
1259                 return 0;
1260         }
1261
1262         vif->keys[key_index].key_len = 0;
1263
1264         return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1265 }
1266
1267 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1268                                    u8 key_index, bool pairwise,
1269                                    const u8 *mac_addr, void *cookie,
1270                                    void (*callback) (void *cookie,
1271                                                      struct key_params *))
1272 {
1273         struct ath6kl_vif *vif = netdev_priv(ndev);
1274         struct ath6kl_key *key = NULL;
1275         struct key_params params;
1276
1277         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1278
1279         if (!ath6kl_cfg80211_ready(vif))
1280                 return -EIO;
1281
1282         if (key_index > WMI_MAX_KEY_INDEX) {
1283                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1284                            "%s: key index %d out of bounds\n", __func__,
1285                            key_index);
1286                 return -ENOENT;
1287         }
1288
1289         key = &vif->keys[key_index];
1290         memset(&params, 0, sizeof(params));
1291         params.cipher = key->cipher;
1292         params.key_len = key->key_len;
1293         params.seq_len = key->seq_len;
1294         params.seq = key->seq;
1295         params.key = key->key;
1296
1297         callback(cookie, &params);
1298
1299         return key->key_len ? 0 : -ENOENT;
1300 }
1301
1302 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1303                                            struct net_device *ndev,
1304                                            u8 key_index, bool unicast,
1305                                            bool multicast)
1306 {
1307         struct ath6kl *ar = ath6kl_priv(ndev);
1308         struct ath6kl_vif *vif = netdev_priv(ndev);
1309         struct ath6kl_key *key = NULL;
1310         u8 key_usage;
1311         enum crypto_type key_type = NONE_CRYPT;
1312
1313         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1314
1315         if (!ath6kl_cfg80211_ready(vif))
1316                 return -EIO;
1317
1318         if (key_index > WMI_MAX_KEY_INDEX) {
1319                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1320                            "%s: key index %d out of bounds\n",
1321                            __func__, key_index);
1322                 return -ENOENT;
1323         }
1324
1325         if (!vif->keys[key_index].key_len) {
1326                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1327                            __func__, key_index);
1328                 return -EINVAL;
1329         }
1330
1331         vif->def_txkey_index = key_index;
1332         key = &vif->keys[vif->def_txkey_index];
1333         key_usage = GROUP_USAGE;
1334         if (vif->prwise_crypto == WEP_CRYPT)
1335                 key_usage |= TX_USAGE;
1336         if (unicast)
1337                 key_type = vif->prwise_crypto;
1338         if (multicast)
1339                 key_type = vif->grp_crypto;
1340
1341         if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1342                 return 0; /* Delay until AP mode has been started */
1343
1344         return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1345                                      vif->def_txkey_index,
1346                                      key_type, key_usage,
1347                                      key->key_len, key->seq, key->seq_len,
1348                                      key->key,
1349                                      KEY_OP_INIT_VAL, NULL,
1350                                      SYNC_BOTH_WMIFLAG);
1351 }
1352
1353 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1354                                        bool ismcast)
1355 {
1356         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1357                    "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1358
1359         cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1360                                      (ismcast ? NL80211_KEYTYPE_GROUP :
1361                                       NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1362                                      GFP_KERNEL);
1363 }
1364
1365 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1366 {
1367         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1368         struct ath6kl_vif *vif;
1369         int ret;
1370
1371         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1372                    changed);
1373
1374         vif = ath6kl_vif_first(ar);
1375         if (!vif)
1376                 return -EIO;
1377
1378         if (!ath6kl_cfg80211_ready(vif))
1379                 return -EIO;
1380
1381         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1382                 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1383                 if (ret != 0) {
1384                         ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1385                         return -EIO;
1386                 }
1387         }
1388
1389         return 0;
1390 }
1391
1392 /*
1393  * The type nl80211_tx_power_setting replaces the following
1394  * data type from 2.6.36 onwards
1395 */
1396 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1397                                        enum nl80211_tx_power_setting type,
1398                                        int mbm)
1399 {
1400         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1401         struct ath6kl_vif *vif;
1402         int dbm = MBM_TO_DBM(mbm);
1403
1404         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1405                    type, dbm);
1406
1407         vif = ath6kl_vif_first(ar);
1408         if (!vif)
1409                 return -EIO;
1410
1411         if (!ath6kl_cfg80211_ready(vif))
1412                 return -EIO;
1413
1414         switch (type) {
1415         case NL80211_TX_POWER_AUTOMATIC:
1416                 return 0;
1417         case NL80211_TX_POWER_LIMITED:
1418                 ar->tx_pwr = dbm;
1419                 break;
1420         default:
1421                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1422                            __func__, type);
1423                 return -EOPNOTSUPP;
1424         }
1425
1426         ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1427
1428         return 0;
1429 }
1430
1431 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, 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         ath6kl_cfg80211_vif_cleanup(vif);
1537
1538         return 0;
1539 }
1540
1541 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1542                                         struct net_device *ndev,
1543                                         enum nl80211_iftype type, u32 *flags,
1544                                         struct vif_params *params)
1545 {
1546         struct ath6kl_vif *vif = netdev_priv(ndev);
1547         int i;
1548
1549         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1550
1551         /*
1552          * Don't bring up p2p on an interface which is not initialized
1553          * for p2p operation where fw does not have capability to switch
1554          * dynamically between non-p2p and p2p type interface.
1555          */
1556         if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1557                       vif->ar->fw_capabilities) &&
1558             (type == NL80211_IFTYPE_P2P_CLIENT ||
1559              type == NL80211_IFTYPE_P2P_GO)) {
1560                 if (vif->ar->vif_max == 1) {
1561                         if (vif->fw_vif_idx != 0)
1562                                 return -EINVAL;
1563                         else
1564                                 goto set_iface_type;
1565                 }
1566
1567                 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1568                         if (i == vif->fw_vif_idx)
1569                                 break;
1570                 }
1571
1572                 if (i == vif->ar->vif_max) {
1573                         ath6kl_err("Invalid interface to bring up P2P\n");
1574                         return -EINVAL;
1575                 }
1576         }
1577
1578         /* need to clean up enhanced bmiss detection fw state */
1579         ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1580
1581 set_iface_type:
1582         switch (type) {
1583         case NL80211_IFTYPE_STATION:
1584         case NL80211_IFTYPE_P2P_CLIENT:
1585                 vif->next_mode = INFRA_NETWORK;
1586                 break;
1587         case NL80211_IFTYPE_ADHOC:
1588                 vif->next_mode = ADHOC_NETWORK;
1589                 break;
1590         case NL80211_IFTYPE_AP:
1591         case NL80211_IFTYPE_P2P_GO:
1592                 vif->next_mode = AP_NETWORK;
1593                 break;
1594         default:
1595                 ath6kl_err("invalid interface type %u\n", type);
1596                 return -EOPNOTSUPP;
1597         }
1598
1599         vif->wdev.iftype = type;
1600
1601         return 0;
1602 }
1603
1604 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1605                                      struct net_device *dev,
1606                                      struct cfg80211_ibss_params *ibss_param)
1607 {
1608         struct ath6kl *ar = ath6kl_priv(dev);
1609         struct ath6kl_vif *vif = netdev_priv(dev);
1610         int status;
1611
1612         if (!ath6kl_cfg80211_ready(vif))
1613                 return -EIO;
1614
1615         vif->ssid_len = ibss_param->ssid_len;
1616         memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1617
1618         if (ibss_param->channel)
1619                 vif->ch_hint = ibss_param->channel->center_freq;
1620
1621         if (ibss_param->channel_fixed) {
1622                 /*
1623                  * TODO: channel_fixed: The channel should be fixed, do not
1624                  * search for IBSSs to join on other channels. Target
1625                  * firmware does not support this feature, needs to be
1626                  * updated.
1627                  */
1628                 return -EOPNOTSUPP;
1629         }
1630
1631         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1632         if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1633                 memcpy(vif->req_bssid, ibss_param->bssid,
1634                        sizeof(vif->req_bssid));
1635
1636         ath6kl_set_wpa_version(vif, 0);
1637
1638         status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1639         if (status)
1640                 return status;
1641
1642         if (ibss_param->privacy) {
1643                 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1644                 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1645         } else {
1646                 ath6kl_set_cipher(vif, 0, true);
1647                 ath6kl_set_cipher(vif, 0, false);
1648         }
1649
1650         vif->nw_type = vif->next_mode;
1651
1652         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1653                    "%s: connect called with authmode %d dot11 auth %d"
1654                    " PW crypto %d PW crypto len %d GRP crypto %d"
1655                    " GRP crypto len %d channel hint %u\n",
1656                    __func__,
1657                    vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1658                    vif->prwise_crypto_len, vif->grp_crypto,
1659                    vif->grp_crypto_len, vif->ch_hint);
1660
1661         status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1662                                         vif->dot11_auth_mode, vif->auth_mode,
1663                                         vif->prwise_crypto,
1664                                         vif->prwise_crypto_len,
1665                                         vif->grp_crypto, vif->grp_crypto_len,
1666                                         vif->ssid_len, vif->ssid,
1667                                         vif->req_bssid, vif->ch_hint,
1668                                         ar->connect_ctrl_flags, SUBTYPE_NONE);
1669         set_bit(CONNECT_PEND, &vif->flags);
1670
1671         return 0;
1672 }
1673
1674 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1675                                       struct net_device *dev)
1676 {
1677         struct ath6kl_vif *vif = netdev_priv(dev);
1678
1679         if (!ath6kl_cfg80211_ready(vif))
1680                 return -EIO;
1681
1682         ath6kl_disconnect(vif);
1683         memset(vif->ssid, 0, sizeof(vif->ssid));
1684         vif->ssid_len = 0;
1685
1686         return 0;
1687 }
1688
1689 static const u32 cipher_suites[] = {
1690         WLAN_CIPHER_SUITE_WEP40,
1691         WLAN_CIPHER_SUITE_WEP104,
1692         WLAN_CIPHER_SUITE_TKIP,
1693         WLAN_CIPHER_SUITE_CCMP,
1694         CCKM_KRK_CIPHER_SUITE,
1695         WLAN_CIPHER_SUITE_SMS4,
1696 };
1697
1698 static bool is_rate_legacy(s32 rate)
1699 {
1700         static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1701                 6000, 9000, 12000, 18000, 24000,
1702                 36000, 48000, 54000
1703         };
1704         u8 i;
1705
1706         for (i = 0; i < ARRAY_SIZE(legacy); i++)
1707                 if (rate == legacy[i])
1708                         return true;
1709
1710         return false;
1711 }
1712
1713 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1714 {
1715         static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1716                 52000, 58500, 65000, 72200
1717         };
1718         u8 i;
1719
1720         for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1721                 if (rate == ht20[i]) {
1722                         if (i == ARRAY_SIZE(ht20) - 1)
1723                                 /* last rate uses sgi */
1724                                 *sgi = true;
1725                         else
1726                                 *sgi = false;
1727
1728                         *mcs = i;
1729                         return true;
1730                 }
1731         }
1732         return false;
1733 }
1734
1735 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1736 {
1737         static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1738                 81000, 108000, 121500, 135000,
1739                 150000
1740         };
1741         u8 i;
1742
1743         for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1744                 if (rate == ht40[i]) {
1745                         if (i == ARRAY_SIZE(ht40) - 1)
1746                                 /* last rate uses sgi */
1747                                 *sgi = true;
1748                         else
1749                                 *sgi = false;
1750
1751                         *mcs = i;
1752                         return true;
1753                 }
1754         }
1755
1756         return false;
1757 }
1758
1759 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1760                               u8 *mac, struct station_info *sinfo)
1761 {
1762         struct ath6kl *ar = ath6kl_priv(dev);
1763         struct ath6kl_vif *vif = netdev_priv(dev);
1764         long left;
1765         bool sgi;
1766         s32 rate;
1767         int ret;
1768         u8 mcs;
1769
1770         if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1771                 return -ENOENT;
1772
1773         if (down_interruptible(&ar->sem))
1774                 return -EBUSY;
1775
1776         set_bit(STATS_UPDATE_PEND, &vif->flags);
1777
1778         ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1779
1780         if (ret != 0) {
1781                 up(&ar->sem);
1782                 return -EIO;
1783         }
1784
1785         left = wait_event_interruptible_timeout(ar->event_wq,
1786                                                 !test_bit(STATS_UPDATE_PEND,
1787                                                           &vif->flags),
1788                                                 WMI_TIMEOUT);
1789
1790         up(&ar->sem);
1791
1792         if (left == 0)
1793                 return -ETIMEDOUT;
1794         else if (left < 0)
1795                 return left;
1796
1797         if (vif->target_stats.rx_byte) {
1798                 sinfo->rx_bytes = vif->target_stats.rx_byte;
1799                 sinfo->filled |= STATION_INFO_RX_BYTES;
1800                 sinfo->rx_packets = vif->target_stats.rx_pkt;
1801                 sinfo->filled |= STATION_INFO_RX_PACKETS;
1802         }
1803
1804         if (vif->target_stats.tx_byte) {
1805                 sinfo->tx_bytes = vif->target_stats.tx_byte;
1806                 sinfo->filled |= STATION_INFO_TX_BYTES;
1807                 sinfo->tx_packets = vif->target_stats.tx_pkt;
1808                 sinfo->filled |= STATION_INFO_TX_PACKETS;
1809         }
1810
1811         sinfo->signal = vif->target_stats.cs_rssi;
1812         sinfo->filled |= STATION_INFO_SIGNAL;
1813
1814         rate = vif->target_stats.tx_ucast_rate;
1815
1816         if (is_rate_legacy(rate)) {
1817                 sinfo->txrate.legacy = rate / 100;
1818         } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1819                 if (sgi) {
1820                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1821                         sinfo->txrate.mcs = mcs - 1;
1822                 } else {
1823                         sinfo->txrate.mcs = mcs;
1824                 }
1825
1826                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1827         } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1828                 if (sgi) {
1829                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1830                         sinfo->txrate.mcs = mcs - 1;
1831                 } else {
1832                         sinfo->txrate.mcs = mcs;
1833                 }
1834
1835                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
1836                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1837         } else {
1838                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1839                            "invalid rate from stats: %d\n", rate);
1840                 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1841                 return 0;
1842         }
1843
1844         sinfo->filled |= STATION_INFO_TX_BITRATE;
1845
1846         if (test_bit(CONNECTED, &vif->flags) &&
1847             test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1848             vif->nw_type == INFRA_NETWORK) {
1849                 sinfo->filled |= STATION_INFO_BSS_PARAM;
1850                 sinfo->bss_param.flags = 0;
1851                 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1852                 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1853         }
1854
1855         return 0;
1856 }
1857
1858 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1859                             struct cfg80211_pmksa *pmksa)
1860 {
1861         struct ath6kl *ar = ath6kl_priv(netdev);
1862         struct ath6kl_vif *vif = netdev_priv(netdev);
1863
1864         return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1865                                        pmksa->pmkid, true);
1866 }
1867
1868 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1869                             struct cfg80211_pmksa *pmksa)
1870 {
1871         struct ath6kl *ar = ath6kl_priv(netdev);
1872         struct ath6kl_vif *vif = netdev_priv(netdev);
1873
1874         return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1875                                        pmksa->pmkid, false);
1876 }
1877
1878 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1879 {
1880         struct ath6kl *ar = ath6kl_priv(netdev);
1881         struct ath6kl_vif *vif = netdev_priv(netdev);
1882
1883         if (test_bit(CONNECTED, &vif->flags))
1884                 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1885                                                vif->bssid, NULL, false);
1886         return 0;
1887 }
1888
1889 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1890                           struct cfg80211_wowlan *wow, u32 *filter)
1891 {
1892         int ret, pos;
1893         u8 mask[WOW_PATTERN_SIZE];
1894         u16 i;
1895
1896         /* Configure the patterns that we received from the user. */
1897         for (i = 0; i < wow->n_patterns; i++) {
1898
1899                 /*
1900                  * Convert given nl80211 specific mask value to equivalent
1901                  * driver specific mask value and send it to the chip along
1902                  * with patterns. For example, If the mask value defined in
1903                  * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1904                  * then equivalent driver specific mask value is
1905                  * "0xFF 0x00 0xFF 0x00".
1906                  */
1907                 memset(&mask, 0, sizeof(mask));
1908                 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1909                         if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1910                                 mask[pos] = 0xFF;
1911                 }
1912                 /*
1913                  * Note: Pattern's offset is not passed as part of wowlan
1914                  * parameter from CFG layer. So it's always passed as ZERO
1915                  * to the firmware. It means, given WOW patterns are always
1916                  * matched from the first byte of received pkt in the firmware.
1917                  */
1918                 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1919                                 vif->fw_vif_idx, WOW_LIST_ID,
1920                                 wow->patterns[i].pattern_len,
1921                                 0 /* pattern offset */,
1922                                 wow->patterns[i].pattern, mask);
1923                 if (ret)
1924                         return ret;
1925         }
1926
1927         if (wow->disconnect)
1928                 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1929
1930         if (wow->magic_pkt)
1931                 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1932
1933         if (wow->gtk_rekey_failure)
1934                 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1935
1936         if (wow->eap_identity_req)
1937                 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1938
1939         if (wow->four_way_handshake)
1940                 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1941
1942         return 0;
1943 }
1944
1945 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1946 {
1947         static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1948                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1949                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1950                 0x00, 0x08 };
1951         static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1952                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1953                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1954                 0x00, 0x7f };
1955         u8 unicst_offset = 0;
1956         static const u8 arp_pattern[] = { 0x08, 0x06 };
1957         static const u8 arp_mask[] = { 0xff, 0xff };
1958         u8 arp_offset = 20;
1959         static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1960         static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1961         u8 discvr_offset = 38;
1962         static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1963                 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1964                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1965                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1966                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1967                 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1968         static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1969                 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1970                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1971                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1972                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1973                 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1974         u8 dhcp_offset = 0;
1975         int ret;
1976
1977         /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1978         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1979                         vif->fw_vif_idx, WOW_LIST_ID,
1980                         sizeof(unicst_pattern), unicst_offset,
1981                         unicst_pattern, unicst_mask);
1982         if (ret) {
1983                 ath6kl_err("failed to add WOW unicast IP pattern\n");
1984                 return ret;
1985         }
1986
1987         /* Setup all ARP pkt pattern */
1988         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1989                         vif->fw_vif_idx, WOW_LIST_ID,
1990                         sizeof(arp_pattern), arp_offset,
1991                         arp_pattern, arp_mask);
1992         if (ret) {
1993                 ath6kl_err("failed to add WOW ARP pattern\n");
1994                 return ret;
1995         }
1996
1997         /*
1998          * Setup multicast pattern for mDNS 224.0.0.251,
1999          * SSDP 239.255.255.250 and LLMNR  224.0.0.252
2000          */
2001         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2002                         vif->fw_vif_idx, WOW_LIST_ID,
2003                         sizeof(discvr_pattern), discvr_offset,
2004                         discvr_pattern, discvr_mask);
2005         if (ret) {
2006                 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2007                 return ret;
2008         }
2009
2010         /* Setup all DHCP broadcast pkt pattern */
2011         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2012                         vif->fw_vif_idx, WOW_LIST_ID,
2013                         sizeof(dhcp_pattern), dhcp_offset,
2014                         dhcp_pattern, dhcp_mask);
2015         if (ret) {
2016                 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2017                 return ret;
2018         }
2019
2020         return 0;
2021 }
2022
2023 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2024 {
2025         struct net_device *ndev = vif->ndev;
2026         static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2027         static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2028         u8 discvr_offset = 38;
2029         u8 mac_mask[ETH_ALEN];
2030         int ret;
2031
2032         /* Setup unicast pkt pattern */
2033         memset(mac_mask, 0xff, ETH_ALEN);
2034         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2035                                 vif->fw_vif_idx, WOW_LIST_ID,
2036                                 ETH_ALEN, 0, ndev->dev_addr,
2037                                 mac_mask);
2038         if (ret) {
2039                 ath6kl_err("failed to add WOW unicast pattern\n");
2040                 return ret;
2041         }
2042
2043         /*
2044          * Setup multicast pattern for mDNS 224.0.0.251,
2045          * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2046          */
2047         if ((ndev->flags & IFF_ALLMULTI) ||
2048             (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2049                 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2050                                 vif->fw_vif_idx, WOW_LIST_ID,
2051                                 sizeof(discvr_pattern), discvr_offset,
2052                                 discvr_pattern, discvr_mask);
2053                 if (ret) {
2054                         ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2055                         return ret;
2056                 }
2057         }
2058
2059         return 0;
2060 }
2061
2062 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2063 {
2064         return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2065 }
2066
2067 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2068 {
2069         return !ar->tx_pending[ar->ctrl_ep];
2070 }
2071
2072 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2073 {
2074         int ret, left;
2075
2076         clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2077
2078         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2079                                                  ATH6KL_HOST_MODE_ASLEEP);
2080         if (ret)
2081                 return ret;
2082
2083         left = wait_event_interruptible_timeout(ar->event_wq,
2084                                                 is_hsleep_mode_procsed(vif),
2085                                                 WMI_TIMEOUT);
2086         if (left == 0) {
2087                 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2088                 ret = -ETIMEDOUT;
2089         } else if (left < 0) {
2090                 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2091                             left);
2092                 ret = left;
2093         }
2094
2095         if (ar->tx_pending[ar->ctrl_ep]) {
2096                 left = wait_event_interruptible_timeout(ar->event_wq,
2097                                                         is_ctrl_ep_empty(ar),
2098                                                         WMI_TIMEOUT);
2099                 if (left == 0) {
2100                         ath6kl_warn("clear wmi ctrl data timeout\n");
2101                         ret = -ETIMEDOUT;
2102                 } else if (left < 0) {
2103                         ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2104                         ret = left;
2105                 }
2106         }
2107
2108         return ret;
2109 }
2110
2111 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif,
2112                                   struct cfg80211_wowlan *wow, u32 *filter)
2113 {
2114         struct ath6kl *ar = vif->ar;
2115         struct in_device *in_dev;
2116         struct in_ifaddr *ifa;
2117         int ret;
2118         u16 i, bmiss_time;
2119         __be32 ips[MAX_IP_ADDRS];
2120         u8 index = 0;
2121
2122         if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2123             test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2124                      ar->fw_capabilities)) {
2125                 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2126                                                 vif->fw_vif_idx, false);
2127                 if (ret)
2128                         return ret;
2129         }
2130
2131         /* Clear existing WOW patterns */
2132         for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2133                 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2134                                                WOW_LIST_ID, i);
2135
2136         /*
2137          * Skip the default WOW pattern configuration
2138          * if the driver receives any WOW patterns from
2139          * the user.
2140          */
2141         if (wow)
2142                 ret = ath6kl_wow_usr(ar, vif, wow, filter);
2143         else if (vif->nw_type == AP_NETWORK)
2144                 ret = ath6kl_wow_ap(ar, vif);
2145         else
2146                 ret = ath6kl_wow_sta(ar, vif);
2147
2148         if (ret)
2149                 return ret;
2150
2151         netif_stop_queue(vif->ndev);
2152
2153         if (vif->nw_type != AP_NETWORK) {
2154                 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2155                                                     ATH6KL_MAX_WOW_LISTEN_INTL,
2156                                                     0);
2157                 if (ret)
2158                         return ret;
2159
2160                 /* Set listen interval x 15 times as bmiss time */
2161                 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2162                 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2163                         bmiss_time = ATH6KL_MAX_BMISS_TIME;
2164
2165                 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2166                                                bmiss_time, 0);
2167                 if (ret)
2168                         return ret;
2169
2170                 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2171                                                 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2172                                                 0, 0, 0, 0);
2173                 if (ret)
2174                         return ret;
2175         }
2176
2177         /* Setup own IP addr for ARP agent. */
2178         in_dev = __in_dev_get_rtnl(vif->ndev);
2179         if (!in_dev)
2180                 return 0;
2181
2182         ifa = in_dev->ifa_list;
2183         memset(&ips, 0, sizeof(ips));
2184
2185         /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2186         while (index < MAX_IP_ADDRS && ifa) {
2187                 ips[index] = ifa->ifa_local;
2188                 ifa = ifa->ifa_next;
2189                 index++;
2190         }
2191
2192         if (ifa) {
2193                 ath6kl_err("total IP addr count is exceeding fw limit\n");
2194                 return -EINVAL;
2195         }
2196
2197         ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2198         if (ret) {
2199                 ath6kl_err("fail to setup ip for arp agent\n");
2200                 return ret;
2201         }
2202
2203         return ret;
2204 }
2205
2206 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2207 {
2208         struct ath6kl_vif *first_vif, *vif;
2209         int ret = 0;
2210         u32 filter = 0;
2211         bool connected = false;
2212
2213         /* enter / leave wow suspend on first vif always */
2214         first_vif = ath6kl_vif_first(ar);
2215         if (WARN_ON(unlikely(!first_vif)) ||
2216             !ath6kl_cfg80211_ready(first_vif))
2217                 return -EIO;
2218
2219         if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2220                 return -EINVAL;
2221
2222         /* install filters for each connected vif */
2223         spin_lock_bh(&ar->list_lock);
2224         list_for_each_entry(vif, &ar->vif_list, list) {
2225                 if (!test_bit(CONNECTED, &vif->flags) ||
2226                     !ath6kl_cfg80211_ready(vif))
2227                         continue;
2228                 connected = true;
2229
2230                 ret = ath6kl_wow_suspend_vif(vif, wow, &filter);
2231                 if (ret)
2232                         break;
2233         }
2234         spin_unlock_bh(&ar->list_lock);
2235
2236         if (!connected)
2237                 return -ENOTCONN;
2238         else if (ret)
2239                 return ret;
2240
2241         ar->state = ATH6KL_STATE_SUSPENDING;
2242
2243         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx,
2244                                           ATH6KL_WOW_MODE_ENABLE,
2245                                           filter,
2246                                           WOW_HOST_REQ_DELAY);
2247         if (ret)
2248                 return ret;
2249
2250         return ath6kl_cfg80211_host_sleep(ar, first_vif);
2251 }
2252
2253 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif)
2254 {
2255         struct ath6kl *ar = vif->ar;
2256         int ret;
2257
2258         if (vif->nw_type != AP_NETWORK) {
2259                 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2260                                                 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2261                 if (ret)
2262                         return ret;
2263
2264                 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2265                                                     vif->listen_intvl_t, 0);
2266                 if (ret)
2267                         return ret;
2268
2269                 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2270                                                vif->bmiss_time_t, 0);
2271                 if (ret)
2272                         return ret;
2273         }
2274
2275         if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2276             test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2277                      ar->fw_capabilities)) {
2278                 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2279                                                   vif->fw_vif_idx, true);
2280                 if (ret)
2281                         return ret;
2282         }
2283
2284         netif_wake_queue(vif->ndev);
2285
2286         return 0;
2287 }
2288
2289 static int ath6kl_wow_resume(struct ath6kl *ar)
2290 {
2291         struct ath6kl_vif *vif;
2292         int ret;
2293
2294         vif = ath6kl_vif_first(ar);
2295         if (WARN_ON(unlikely(!vif)) ||
2296             !ath6kl_cfg80211_ready(vif))
2297                 return -EIO;
2298
2299         ar->state = ATH6KL_STATE_RESUMING;
2300
2301         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2302                                                  ATH6KL_HOST_MODE_AWAKE);
2303         if (ret) {
2304                 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2305                             ret);
2306                 goto cleanup;
2307         }
2308
2309         spin_lock_bh(&ar->list_lock);
2310         list_for_each_entry(vif, &ar->vif_list, list) {
2311                 if (!test_bit(CONNECTED, &vif->flags) ||
2312                     !ath6kl_cfg80211_ready(vif))
2313                         continue;
2314                 ret = ath6kl_wow_resume_vif(vif);
2315                 if (ret)
2316                         break;
2317         }
2318         spin_unlock_bh(&ar->list_lock);
2319
2320         if (ret)
2321                 goto cleanup;
2322
2323         ar->state = ATH6KL_STATE_ON;
2324         return 0;
2325
2326 cleanup:
2327         ar->state = ATH6KL_STATE_WOW;
2328         return ret;
2329 }
2330
2331 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2332 {
2333         struct ath6kl_vif *vif;
2334         int ret;
2335
2336         vif = ath6kl_vif_first(ar);
2337         if (!vif)
2338                 return -EIO;
2339
2340         if (!test_bit(WMI_READY, &ar->flag)) {
2341                 ath6kl_err("deepsleep failed as wmi is not ready\n");
2342                 return -EIO;
2343         }
2344
2345         ath6kl_cfg80211_stop_all(ar);
2346
2347         /* Save the current power mode before enabling power save */
2348         ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2349
2350         ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2351         if (ret)
2352                 return ret;
2353
2354         /* Disable WOW mode */
2355         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2356                                           ATH6KL_WOW_MODE_DISABLE,
2357                                           0, 0);
2358         if (ret)
2359                 return ret;
2360
2361         /* Flush all non control pkts in TX path */
2362         ath6kl_tx_data_cleanup(ar);
2363
2364         ret = ath6kl_cfg80211_host_sleep(ar, vif);
2365         if (ret)
2366                 return ret;
2367
2368         return 0;
2369 }
2370
2371 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2372 {
2373         struct ath6kl_vif *vif;
2374         int ret;
2375
2376         vif = ath6kl_vif_first(ar);
2377
2378         if (!vif)
2379                 return -EIO;
2380
2381         if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2382                 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2383                                                ar->wmi->saved_pwr_mode);
2384                 if (ret)
2385                         return ret;
2386         }
2387
2388         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2389                                                  ATH6KL_HOST_MODE_AWAKE);
2390         if (ret)
2391                 return ret;
2392
2393         ar->state = ATH6KL_STATE_ON;
2394
2395         /* Reset scan parameter to default values */
2396         ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2397                                         0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2398         if (ret)
2399                 return ret;
2400
2401         return 0;
2402 }
2403
2404 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2405                             enum ath6kl_cfg_suspend_mode mode,
2406                             struct cfg80211_wowlan *wow)
2407 {
2408         struct ath6kl_vif *vif;
2409         enum ath6kl_state prev_state;
2410         int ret;
2411
2412         switch (mode) {
2413         case ATH6KL_CFG_SUSPEND_WOW:
2414
2415                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2416
2417                 /* Flush all non control pkts in TX path */
2418                 ath6kl_tx_data_cleanup(ar);
2419
2420                 prev_state = ar->state;
2421
2422                 ret = ath6kl_wow_suspend(ar, wow);
2423                 if (ret) {
2424                         ar->state = prev_state;
2425                         return ret;
2426                 }
2427
2428                 ar->state = ATH6KL_STATE_WOW;
2429                 break;
2430
2431         case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2432
2433                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2434
2435                 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2436                 if (ret) {
2437                         ath6kl_err("deepsleep suspend failed: %d\n", ret);
2438                         return ret;
2439                 }
2440
2441                 ar->state = ATH6KL_STATE_DEEPSLEEP;
2442
2443                 break;
2444
2445         case ATH6KL_CFG_SUSPEND_CUTPOWER:
2446
2447                 ath6kl_cfg80211_stop_all(ar);
2448
2449                 if (ar->state == ATH6KL_STATE_OFF) {
2450                         ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2451                                    "suspend hw off, no action for cutpower\n");
2452                         break;
2453                 }
2454
2455                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2456
2457                 ret = ath6kl_init_hw_stop(ar);
2458                 if (ret) {
2459                         ath6kl_warn("failed to stop hw during suspend: %d\n",
2460                                     ret);
2461                 }
2462
2463                 ar->state = ATH6KL_STATE_CUTPOWER;
2464
2465                 break;
2466
2467         default:
2468                 break;
2469         }
2470
2471         list_for_each_entry(vif, &ar->vif_list, list)
2472                 ath6kl_cfg80211_scan_complete_event(vif, true);
2473
2474         return 0;
2475 }
2476 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2477
2478 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2479 {
2480         int ret;
2481
2482         switch (ar->state) {
2483         case  ATH6KL_STATE_WOW:
2484                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2485
2486                 ret = ath6kl_wow_resume(ar);
2487                 if (ret) {
2488                         ath6kl_warn("wow mode resume failed: %d\n", ret);
2489                         return ret;
2490                 }
2491
2492                 break;
2493
2494         case ATH6KL_STATE_DEEPSLEEP:
2495                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2496
2497                 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2498                 if (ret) {
2499                         ath6kl_warn("deep sleep resume failed: %d\n", ret);
2500                         return ret;
2501                 }
2502                 break;
2503
2504         case ATH6KL_STATE_CUTPOWER:
2505                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2506
2507                 ret = ath6kl_init_hw_start(ar);
2508                 if (ret) {
2509                         ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2510                         return ret;
2511                 }
2512                 break;
2513
2514         default:
2515                 break;
2516         }
2517
2518         return 0;
2519 }
2520 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2521
2522 #ifdef CONFIG_PM
2523
2524 /* hif layer decides what suspend mode to use */
2525 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2526                                  struct cfg80211_wowlan *wow)
2527 {
2528         struct ath6kl *ar = wiphy_priv(wiphy);
2529
2530         ath6kl_recovery_suspend(ar);
2531
2532         return ath6kl_hif_suspend(ar, wow);
2533 }
2534
2535 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2536 {
2537         struct ath6kl *ar = wiphy_priv(wiphy);
2538         int err;
2539
2540         err = ath6kl_hif_resume(ar);
2541         if (err)
2542                 return err;
2543
2544         ath6kl_recovery_resume(ar);
2545
2546         return 0;
2547 }
2548
2549 /*
2550  * FIXME: WOW suspend mode is selected if the host sdio controller supports
2551  * both sdio irq wake up and keep power. The target pulls sdio data line to
2552  * wake up the host when WOW pattern matches. This causes sdio irq handler
2553  * is being called in the host side which internally hits ath6kl's RX path.
2554  *
2555  * Since sdio interrupt is not disabled, RX path executes even before
2556  * the host executes the actual resume operation from PM module.
2557  *
2558  * In the current scenario, WOW resume should happen before start processing
2559  * any data from the target. So It's required to perform WOW resume in RX path.
2560  * Ideally we should perform WOW resume only in the actual platform
2561  * resume path. This area needs bit rework to avoid WOW resume in RX path.
2562  *
2563  * ath6kl_check_wow_status() is called from ath6kl_rx().
2564  */
2565 void ath6kl_check_wow_status(struct ath6kl *ar)
2566 {
2567         if (ar->state == ATH6KL_STATE_SUSPENDING)
2568                 return;
2569
2570         if (ar->state == ATH6KL_STATE_WOW)
2571                 ath6kl_cfg80211_resume(ar);
2572 }
2573
2574 #else
2575
2576 void ath6kl_check_wow_status(struct ath6kl *ar)
2577 {
2578 }
2579 #endif
2580
2581 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum ieee80211_band band,
2582                             bool ht_enable)
2583 {
2584         struct ath6kl_htcap *htcap = &vif->htcap[band];
2585
2586         if (htcap->ht_enable == ht_enable)
2587                 return 0;
2588
2589         if (ht_enable) {
2590                 /* Set default ht capabilities */
2591                 htcap->ht_enable = true;
2592                 htcap->cap_info = (band == IEEE80211_BAND_2GHZ) ?
2593                                    ath6kl_g_htcap : ath6kl_a_htcap;
2594                 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2595         } else /* Disable ht */
2596                 memset(htcap, 0, sizeof(*htcap));
2597
2598         return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2599                                         band, htcap);
2600 }
2601
2602 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2603 {
2604         struct wiphy *wiphy = vif->ar->wiphy;
2605         int band, ret = 0;
2606
2607         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2608                 if (!wiphy->bands[band])
2609                         continue;
2610
2611                 ret = ath6kl_set_htcap(vif, band,
2612                                 wiphy->bands[band]->ht_cap.ht_supported);
2613                 if (ret)
2614                         return ret;
2615         }
2616
2617         return ret;
2618 }
2619
2620 static bool ath6kl_is_p2p_ie(const u8 *pos)
2621 {
2622         return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2623                 pos[2] == 0x50 && pos[3] == 0x6f &&
2624                 pos[4] == 0x9a && pos[5] == 0x09;
2625 }
2626
2627 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2628                                         const u8 *ies, size_t ies_len)
2629 {
2630         struct ath6kl *ar = vif->ar;
2631         const u8 *pos;
2632         u8 *buf = NULL;
2633         size_t len = 0;
2634         int ret;
2635
2636         /*
2637          * Filter out P2P IE(s) since they will be included depending on
2638          * the Probe Request frame in ath6kl_send_go_probe_resp().
2639          */
2640
2641         if (ies && ies_len) {
2642                 buf = kmalloc(ies_len, GFP_KERNEL);
2643                 if (buf == NULL)
2644                         return -ENOMEM;
2645                 pos = ies;
2646                 while (pos + 1 < ies + ies_len) {
2647                         if (pos + 2 + pos[1] > ies + ies_len)
2648                                 break;
2649                         if (!ath6kl_is_p2p_ie(pos)) {
2650                                 memcpy(buf + len, pos, 2 + pos[1]);
2651                                 len += 2 + pos[1];
2652                         }
2653                         pos += 2 + pos[1];
2654                 }
2655         }
2656
2657         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2658                                        WMI_FRAME_PROBE_RESP, buf, len);
2659         kfree(buf);
2660         return ret;
2661 }
2662
2663 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2664                           struct cfg80211_beacon_data *info)
2665 {
2666         struct ath6kl *ar = vif->ar;
2667         int res;
2668
2669         /* this also clears IE in fw if it's not set */
2670         res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2671                                        WMI_FRAME_BEACON,
2672                                        info->beacon_ies,
2673                                        info->beacon_ies_len);
2674         if (res)
2675                 return res;
2676
2677         /* this also clears IE in fw if it's not set */
2678         res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2679                                            info->proberesp_ies_len);
2680         if (res)
2681                 return res;
2682
2683         /* this also clears IE in fw if it's not set */
2684         res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2685                                        WMI_FRAME_ASSOC_RESP,
2686                                        info->assocresp_ies,
2687                                        info->assocresp_ies_len);
2688         if (res)
2689                 return res;
2690
2691         return 0;
2692 }
2693
2694 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2695                                 u8 *rsn_capab)
2696 {
2697         const u8 *rsn_ie;
2698         size_t rsn_ie_len;
2699         u16 cnt;
2700
2701         if (!beacon->tail)
2702                 return -EINVAL;
2703
2704         rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2705         if (!rsn_ie)
2706                 return -EINVAL;
2707
2708         rsn_ie_len = *(rsn_ie + 1);
2709         /* skip element id and length */
2710         rsn_ie += 2;
2711
2712         /* skip version */
2713         if (rsn_ie_len < 2)
2714                 return -EINVAL;
2715         rsn_ie +=  2;
2716         rsn_ie_len -= 2;
2717
2718         /* skip group cipher suite */
2719         if (rsn_ie_len < 4)
2720                 return 0;
2721         rsn_ie +=  4;
2722         rsn_ie_len -= 4;
2723
2724         /* skip pairwise cipher suite */
2725         if (rsn_ie_len < 2)
2726                 return 0;
2727         cnt = get_unaligned_le16(rsn_ie);
2728         rsn_ie += (2 + cnt * 4);
2729         rsn_ie_len -= (2 + cnt * 4);
2730
2731         /* skip akm suite */
2732         if (rsn_ie_len < 2)
2733                 return 0;
2734         cnt = get_unaligned_le16(rsn_ie);
2735         rsn_ie += (2 + cnt * 4);
2736         rsn_ie_len -= (2 + cnt * 4);
2737
2738         if (rsn_ie_len < 2)
2739                 return 0;
2740
2741         memcpy(rsn_capab, rsn_ie, 2);
2742
2743         return 0;
2744 }
2745
2746 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2747                            struct cfg80211_ap_settings *info)
2748 {
2749         struct ath6kl *ar = ath6kl_priv(dev);
2750         struct ath6kl_vif *vif = netdev_priv(dev);
2751         struct ieee80211_mgmt *mgmt;
2752         bool hidden = false;
2753         u8 *ies;
2754         int ies_len;
2755         struct wmi_connect_cmd p;
2756         int res;
2757         int i, ret;
2758         u16 rsn_capab = 0;
2759         int inactivity_timeout = 0;
2760
2761         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2762
2763         if (!ath6kl_cfg80211_ready(vif))
2764                 return -EIO;
2765
2766         if (vif->next_mode != AP_NETWORK)
2767                 return -EOPNOTSUPP;
2768
2769         res = ath6kl_set_ies(vif, &info->beacon);
2770
2771         ar->ap_mode_bkey.valid = false;
2772
2773         ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx,
2774                                                  info->beacon_interval);
2775
2776         if (ret)
2777                 ath6kl_warn("Failed to set beacon interval: %d\n", ret);
2778
2779         ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2780                                          info->dtim_period);
2781
2782         /* ignore error, just print a warning and continue normally */
2783         if (ret)
2784                 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2785
2786         if (info->beacon.head == NULL)
2787                 return -EINVAL;
2788         mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2789         ies = mgmt->u.beacon.variable;
2790         if (ies > info->beacon.head + info->beacon.head_len)
2791                 return -EINVAL;
2792         ies_len = info->beacon.head + info->beacon.head_len - ies;
2793
2794         if (info->ssid == NULL)
2795                 return -EINVAL;
2796         memcpy(vif->ssid, info->ssid, info->ssid_len);
2797         vif->ssid_len = info->ssid_len;
2798         if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2799                 hidden = true;
2800
2801         res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2802         if (res)
2803                 return res;
2804
2805         ret = ath6kl_set_auth_type(vif, info->auth_type);
2806         if (ret)
2807                 return ret;
2808
2809         memset(&p, 0, sizeof(p));
2810
2811         for (i = 0; i < info->crypto.n_akm_suites; i++) {
2812                 switch (info->crypto.akm_suites[i]) {
2813                 case WLAN_AKM_SUITE_8021X:
2814                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2815                                 p.auth_mode |= WPA_AUTH;
2816                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2817                                 p.auth_mode |= WPA2_AUTH;
2818                         break;
2819                 case WLAN_AKM_SUITE_PSK:
2820                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2821                                 p.auth_mode |= WPA_PSK_AUTH;
2822                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2823                                 p.auth_mode |= WPA2_PSK_AUTH;
2824                         break;
2825                 }
2826         }
2827         if (p.auth_mode == 0)
2828                 p.auth_mode = NONE_AUTH;
2829         vif->auth_mode = p.auth_mode;
2830
2831         for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2832                 switch (info->crypto.ciphers_pairwise[i]) {
2833                 case WLAN_CIPHER_SUITE_WEP40:
2834                 case WLAN_CIPHER_SUITE_WEP104:
2835                         p.prwise_crypto_type |= WEP_CRYPT;
2836                         break;
2837                 case WLAN_CIPHER_SUITE_TKIP:
2838                         p.prwise_crypto_type |= TKIP_CRYPT;
2839                         break;
2840                 case WLAN_CIPHER_SUITE_CCMP:
2841                         p.prwise_crypto_type |= AES_CRYPT;
2842                         break;
2843                 case WLAN_CIPHER_SUITE_SMS4:
2844                         p.prwise_crypto_type |= WAPI_CRYPT;
2845                         break;
2846                 }
2847         }
2848         if (p.prwise_crypto_type == 0) {
2849                 p.prwise_crypto_type = NONE_CRYPT;
2850                 ath6kl_set_cipher(vif, 0, true);
2851         } else if (info->crypto.n_ciphers_pairwise == 1)
2852                 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2853
2854         switch (info->crypto.cipher_group) {
2855         case WLAN_CIPHER_SUITE_WEP40:
2856         case WLAN_CIPHER_SUITE_WEP104:
2857                 p.grp_crypto_type = WEP_CRYPT;
2858                 break;
2859         case WLAN_CIPHER_SUITE_TKIP:
2860                 p.grp_crypto_type = TKIP_CRYPT;
2861                 break;
2862         case WLAN_CIPHER_SUITE_CCMP:
2863                 p.grp_crypto_type = AES_CRYPT;
2864                 break;
2865         case WLAN_CIPHER_SUITE_SMS4:
2866                 p.grp_crypto_type = WAPI_CRYPT;
2867                 break;
2868         default:
2869                 p.grp_crypto_type = NONE_CRYPT;
2870                 break;
2871         }
2872         ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2873
2874         p.nw_type = AP_NETWORK;
2875         vif->nw_type = vif->next_mode;
2876
2877         p.ssid_len = vif->ssid_len;
2878         memcpy(p.ssid, vif->ssid, vif->ssid_len);
2879         p.dot11_auth_mode = vif->dot11_auth_mode;
2880         p.ch = cpu_to_le16(info->channel->center_freq);
2881
2882         /* Enable uAPSD support by default */
2883         res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2884         if (res < 0)
2885                 return res;
2886
2887         if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2888                 p.nw_subtype = SUBTYPE_P2PGO;
2889         } else {
2890                 /*
2891                  * Due to firmware limitation, it is not possible to
2892                  * do P2P mgmt operations in AP mode
2893                  */
2894                 p.nw_subtype = SUBTYPE_NONE;
2895         }
2896
2897         if (info->inactivity_timeout) {
2898
2899                 inactivity_timeout = info->inactivity_timeout;
2900
2901                 if (ar->hw.flags & ATH6KL_HW_AP_INACTIVITY_MINS)
2902                         inactivity_timeout = DIV_ROUND_UP(inactivity_timeout,
2903                                                           60);
2904
2905                 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2906                                                   inactivity_timeout);
2907                 if (res < 0)
2908                         return res;
2909         }
2910
2911         if (ath6kl_set_htcap(vif, info->channel->band,
2912                              info->channel_type != NL80211_CHAN_NO_HT))
2913                 return -EIO;
2914
2915         /*
2916          * Get the PTKSA replay counter in the RSN IE. Supplicant
2917          * will use the RSN IE in M3 message and firmware has to
2918          * advertise the same in beacon/probe response. Send
2919          * the complete RSN IE capability field to firmware
2920          */
2921         if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2922             test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2923                      ar->fw_capabilities)) {
2924                 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2925                                             WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2926                                             (const u8 *) &rsn_capab,
2927                                             sizeof(rsn_capab));
2928                 vif->rsn_capab = rsn_capab;
2929                 if (res < 0)
2930                         return res;
2931         }
2932
2933         memcpy(&vif->profile, &p, sizeof(p));
2934         res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2935         if (res < 0)
2936                 return res;
2937
2938         return 0;
2939 }
2940
2941 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2942                                 struct cfg80211_beacon_data *beacon)
2943 {
2944         struct ath6kl_vif *vif = netdev_priv(dev);
2945
2946         if (!ath6kl_cfg80211_ready(vif))
2947                 return -EIO;
2948
2949         if (vif->next_mode != AP_NETWORK)
2950                 return -EOPNOTSUPP;
2951
2952         return ath6kl_set_ies(vif, beacon);
2953 }
2954
2955 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2956 {
2957         struct ath6kl *ar = ath6kl_priv(dev);
2958         struct ath6kl_vif *vif = netdev_priv(dev);
2959
2960         if (vif->nw_type != AP_NETWORK)
2961                 return -EOPNOTSUPP;
2962         if (!test_bit(CONNECTED, &vif->flags))
2963                 return -ENOTCONN;
2964
2965         ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2966         clear_bit(CONNECTED, &vif->flags);
2967
2968         /* Restore ht setting in firmware */
2969         return ath6kl_restore_htcap(vif);
2970 }
2971
2972 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2973
2974 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2975                               u8 *mac)
2976 {
2977         struct ath6kl *ar = ath6kl_priv(dev);
2978         struct ath6kl_vif *vif = netdev_priv(dev);
2979         const u8 *addr = mac ? mac : bcast_addr;
2980
2981         return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2982                                       addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2983 }
2984
2985 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
2986                                  u8 *mac, struct station_parameters *params)
2987 {
2988         struct ath6kl *ar = ath6kl_priv(dev);
2989         struct ath6kl_vif *vif = netdev_priv(dev);
2990
2991         if (vif->nw_type != AP_NETWORK)
2992                 return -EOPNOTSUPP;
2993
2994         /* Use this only for authorizing/unauthorizing a station */
2995         if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
2996                 return -EOPNOTSUPP;
2997
2998         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
2999                 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3000                                               WMI_AP_MLME_AUTHORIZE, mac, 0);
3001         return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3002                                       WMI_AP_MLME_UNAUTHORIZE, mac, 0);
3003 }
3004
3005 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
3006                                     struct wireless_dev *wdev,
3007                                     struct ieee80211_channel *chan,
3008                                     enum nl80211_channel_type channel_type,
3009                                     unsigned int duration,
3010                                     u64 *cookie)
3011 {
3012         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3013         struct ath6kl *ar = ath6kl_priv(vif->ndev);
3014         u32 id;
3015
3016         /* TODO: if already pending or ongoing remain-on-channel,
3017          * return -EBUSY */
3018         id = ++vif->last_roc_id;
3019         if (id == 0) {
3020                 /* Do not use 0 as the cookie value */
3021                 id = ++vif->last_roc_id;
3022         }
3023         *cookie = id;
3024
3025         return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
3026                                              chan->center_freq, duration);
3027 }
3028
3029 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3030                                            struct wireless_dev *wdev,
3031                                            u64 cookie)
3032 {
3033         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3034         struct ath6kl *ar = ath6kl_priv(vif->ndev);
3035
3036         if (cookie != vif->last_roc_id)
3037                 return -ENOENT;
3038         vif->last_cancel_roc_id = cookie;
3039
3040         return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3041 }
3042
3043 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3044                                      const u8 *buf, size_t len,
3045                                      unsigned int freq)
3046 {
3047         struct ath6kl *ar = vif->ar;
3048         const u8 *pos;
3049         u8 *p2p;
3050         int p2p_len;
3051         int ret;
3052         const struct ieee80211_mgmt *mgmt;
3053
3054         mgmt = (const struct ieee80211_mgmt *) buf;
3055
3056         /* Include P2P IE(s) from the frame generated in user space. */
3057
3058         p2p = kmalloc(len, GFP_KERNEL);
3059         if (p2p == NULL)
3060                 return -ENOMEM;
3061         p2p_len = 0;
3062
3063         pos = mgmt->u.probe_resp.variable;
3064         while (pos + 1 < buf + len) {
3065                 if (pos + 2 + pos[1] > buf + len)
3066                         break;
3067                 if (ath6kl_is_p2p_ie(pos)) {
3068                         memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3069                         p2p_len += 2 + pos[1];