drivers/net/wireless/ath/ath6kl/cfg80211.c

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