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

   1 /*
   2  * Copyright (c) 2004-2011 Atheros Communications Inc.
   3  * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
   4  *
   5  * Permission to use, copy, modify, and/or distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  19
  20 #include <linux/moduleparam.h>
  21 #include <linux/inetdevice.h>
  22 #include <linux/export.h>
  23
  24 #include "core.h"
  25 #include "cfg80211.h"
  26 #include "debug.h"
  27 #include "hif-ops.h"
  28 #include "testmode.h"
  29
  30 #define RATETAB_ENT(_rate, _rateid, _flags) {   \
  31         .bitrate    = (_rate),                  \
  32         .flags      = (_flags),                 \
  33         .hw_value   = (_rateid),                \
  34 }
  35
  36 #define CHAN2G(_channel, _freq, _flags) {   \
  37         .band           = IEEE80211_BAND_2GHZ,  \
  38         .hw_value       = (_channel),           \
  39         .center_freq    = (_freq),              \
  40         .flags          = (_flags),             \
  41         .max_antenna_gain   = 0,                \
  42         .max_power      = 30,                   \
  43 }
  44
  45 #define CHAN5G(_channel, _flags) {                  \
  46         .band           = IEEE80211_BAND_5GHZ,      \
  47         .hw_value       = (_channel),               \
  48         .center_freq    = 5000 + (5 * (_channel)),  \
  49         .flags          = (_flags),                 \
  50         .max_antenna_gain   = 0,                    \
  51         .max_power      = 30,                       \
  52 }
  53
  54 #define DEFAULT_BG_SCAN_PERIOD 60
  55
  56 struct ath6kl_cfg80211_match_probe_ssid {
  57         struct cfg80211_ssid ssid;
  58         u8 flag;
  59 };
  60
  61 static struct ieee80211_rate ath6kl_rates[] = {
  62         RATETAB_ENT(10, 0x1, 0),
  63         RATETAB_ENT(20, 0x2, 0),
  64         RATETAB_ENT(55, 0x4, 0),
  65         RATETAB_ENT(110, 0x8, 0),
  66         RATETAB_ENT(60, 0x10, 0),
  67         RATETAB_ENT(90, 0x20, 0),
  68         RATETAB_ENT(120, 0x40, 0),
  69         RATETAB_ENT(180, 0x80, 0),
  70         RATETAB_ENT(240, 0x100, 0),
  71         RATETAB_ENT(360, 0x200, 0),
  72         RATETAB_ENT(480, 0x400, 0),
  73         RATETAB_ENT(540, 0x800, 0),
  74 };
  75
  76 #define ath6kl_a_rates     (ath6kl_rates + 4)
  77 #define ath6kl_a_rates_size    8
  78 #define ath6kl_g_rates     (ath6kl_rates + 0)
  79 #define ath6kl_g_rates_size    12
  80
  81 #define ath6kl_g_htcap IEEE80211_HT_CAP_SGI_20
  82 #define ath6kl_a_htcap (IEEE80211_HT_CAP_SUP_WIDTH_20_40 | \
  83                         IEEE80211_HT_CAP_SGI_20          | \
  84                         IEEE80211_HT_CAP_SGI_40)
  85
  86 static struct ieee80211_channel ath6kl_2ghz_channels[] = {
  87         CHAN2G(1, 2412, 0),
  88         CHAN2G(2, 2417, 0),
  89         CHAN2G(3, 2422, 0),
  90         CHAN2G(4, 2427, 0),
  91         CHAN2G(5, 2432, 0),
  92         CHAN2G(6, 2437, 0),
  93         CHAN2G(7, 2442, 0),
  94         CHAN2G(8, 2447, 0),
  95         CHAN2G(9, 2452, 0),
  96         CHAN2G(10, 2457, 0),
  97         CHAN2G(11, 2462, 0),
  98         CHAN2G(12, 2467, 0),
  99         CHAN2G(13, 2472, 0),
 100         CHAN2G(14, 2484, 0),
 101 };
 102
 103 static struct ieee80211_channel ath6kl_5ghz_a_channels[] = {
 104         CHAN5G(34, 0), CHAN5G(36, 0),
 105         CHAN5G(38, 0), CHAN5G(40, 0),
 106         CHAN5G(42, 0), CHAN5G(44, 0),
 107         CHAN5G(46, 0), CHAN5G(48, 0),
 108         CHAN5G(52, 0), CHAN5G(56, 0),
 109         CHAN5G(60, 0), CHAN5G(64, 0),
 110         CHAN5G(100, 0), CHAN5G(104, 0),
 111         CHAN5G(108, 0), CHAN5G(112, 0),
 112         CHAN5G(116, 0), CHAN5G(120, 0),
 113         CHAN5G(124, 0), CHAN5G(128, 0),
 114         CHAN5G(132, 0), CHAN5G(136, 0),
 115         CHAN5G(140, 0), CHAN5G(149, 0),
 116         CHAN5G(153, 0), CHAN5G(157, 0),
 117         CHAN5G(161, 0), CHAN5G(165, 0),
 118         CHAN5G(184, 0), CHAN5G(188, 0),
 119         CHAN5G(192, 0), CHAN5G(196, 0),
 120         CHAN5G(200, 0), CHAN5G(204, 0),
 121         CHAN5G(208, 0), CHAN5G(212, 0),
 122         CHAN5G(216, 0),
 123 };
 124
 125 static struct ieee80211_supported_band ath6kl_band_2ghz = {
 126         .n_channels = ARRAY_SIZE(ath6kl_2ghz_channels),
 127         .channels = ath6kl_2ghz_channels,
 128         .n_bitrates = ath6kl_g_rates_size,
 129         .bitrates = ath6kl_g_rates,
 130         .ht_cap.cap = ath6kl_g_htcap,
 131         .ht_cap.ht_supported = true,
 132 };
 133
 134 static struct ieee80211_supported_band ath6kl_band_5ghz = {
 135         .n_channels = ARRAY_SIZE(ath6kl_5ghz_a_channels),
 136         .channels = ath6kl_5ghz_a_channels,
 137         .n_bitrates = ath6kl_a_rates_size,
 138         .bitrates = ath6kl_a_rates,
 139         .ht_cap.cap = ath6kl_a_htcap,
 140         .ht_cap.ht_supported = true,
 141 };
 142
 143 #define CCKM_KRK_CIPHER_SUITE 0x004096ff /* use for KRK */
 144
 145 /* returns true if scheduled scan was stopped */
 146 static bool __ath6kl_cfg80211_sscan_stop(struct ath6kl_vif *vif)
 147 {
 148         struct ath6kl *ar = vif->ar;
 149
 150         if (!test_and_clear_bit(SCHED_SCANNING, &vif->flags))
 151                 return false;
 152
 153         del_timer_sync(&vif->sched_scan_timer);
 154
 155         if (ar->state == ATH6KL_STATE_RECOVERY)
 156                 return true;
 157
 158         ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, false);
 159
 160         return true;
 161 }
 162
 163 static void ath6kl_cfg80211_sscan_disable(struct ath6kl_vif *vif)
 164 {
 165         struct ath6kl *ar = vif->ar;
 166         bool stopped;
 167
 168         stopped = __ath6kl_cfg80211_sscan_stop(vif);
 169
 170         if (!stopped)
 171                 return;
 172
 173         cfg80211_sched_scan_stopped(ar->wiphy);
 174 }
 175
 176 static int ath6kl_set_wpa_version(struct ath6kl_vif *vif,
 177                                   enum nl80211_wpa_versions wpa_version)
 178 {
 179         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: %u\n", __func__, wpa_version);
 180
 181         if (!wpa_version) {
 182                 vif->auth_mode = NONE_AUTH;
 183         } else if (wpa_version & NL80211_WPA_VERSION_2) {
 184                 vif->auth_mode = WPA2_AUTH;
 185         } else if (wpa_version & NL80211_WPA_VERSION_1) {
 186                 vif->auth_mode = WPA_AUTH;
 187         } else {
 188                 ath6kl_err("%s: %u not supported\n", __func__, wpa_version);
 189                 return -ENOTSUPP;
 190         }
 191
 192         return 0;
 193 }
 194
 195 static int ath6kl_set_auth_type(struct ath6kl_vif *vif,
 196                                 enum nl80211_auth_type auth_type)
 197 {
 198         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, auth_type);
 199
 200         switch (auth_type) {
 201         case NL80211_AUTHTYPE_OPEN_SYSTEM:
 202                 vif->dot11_auth_mode = OPEN_AUTH;
 203                 break;
 204         case NL80211_AUTHTYPE_SHARED_KEY:
 205                 vif->dot11_auth_mode = SHARED_AUTH;
 206                 break;
 207         case NL80211_AUTHTYPE_NETWORK_EAP:
 208                 vif->dot11_auth_mode = LEAP_AUTH;
 209                 break;
 210
 211         case NL80211_AUTHTYPE_AUTOMATIC:
 212                 vif->dot11_auth_mode = OPEN_AUTH | SHARED_AUTH;
 213                 break;
 214
 215         default:
 216                 ath6kl_err("%s: 0x%x not supported\n", __func__, auth_type);
 217                 return -ENOTSUPP;
 218         }
 219
 220         return 0;
 221 }
 222
 223 static int ath6kl_set_cipher(struct ath6kl_vif *vif, u32 cipher, bool ucast)
 224 {
 225         u8 *ar_cipher = ucast ? &vif->prwise_crypto : &vif->grp_crypto;
 226         u8 *ar_cipher_len = ucast ? &vif->prwise_crypto_len :
 227                 &vif->grp_crypto_len;
 228
 229         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: cipher 0x%x, ucast %u\n",
 230                    __func__, cipher, ucast);
 231
 232         switch (cipher) {
 233         case 0:
 234                 /* our own hack to use value 0 as no crypto used */
 235                 *ar_cipher = NONE_CRYPT;
 236                 *ar_cipher_len = 0;
 237                 break;
 238         case WLAN_CIPHER_SUITE_WEP40:
 239                 *ar_cipher = WEP_CRYPT;
 240                 *ar_cipher_len = 5;
 241                 break;
 242         case WLAN_CIPHER_SUITE_WEP104:
 243                 *ar_cipher = WEP_CRYPT;
 244                 *ar_cipher_len = 13;
 245                 break;
 246         case WLAN_CIPHER_SUITE_TKIP:
 247                 *ar_cipher = TKIP_CRYPT;
 248                 *ar_cipher_len = 0;
 249                 break;
 250         case WLAN_CIPHER_SUITE_CCMP:
 251                 *ar_cipher = AES_CRYPT;
 252                 *ar_cipher_len = 0;
 253                 break;
 254         case WLAN_CIPHER_SUITE_SMS4:
 255                 *ar_cipher = WAPI_CRYPT;
 256                 *ar_cipher_len = 0;
 257                 break;
 258         default:
 259                 ath6kl_err("cipher 0x%x not supported\n", cipher);
 260                 return -ENOTSUPP;
 261         }
 262
 263         return 0;
 264 }
 265
 266 static void ath6kl_set_key_mgmt(struct ath6kl_vif *vif, u32 key_mgmt)
 267 {
 268         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: 0x%x\n", __func__, key_mgmt);
 269
 270         if (key_mgmt == WLAN_AKM_SUITE_PSK) {
 271                 if (vif->auth_mode == WPA_AUTH)
 272                         vif->auth_mode = WPA_PSK_AUTH;
 273                 else if (vif->auth_mode == WPA2_AUTH)
 274                         vif->auth_mode = WPA2_PSK_AUTH;
 275         } else if (key_mgmt == 0x00409600) {
 276                 if (vif->auth_mode == WPA_AUTH)
 277                         vif->auth_mode = WPA_AUTH_CCKM;
 278                 else if (vif->auth_mode == WPA2_AUTH)
 279                         vif->auth_mode = WPA2_AUTH_CCKM;
 280         } else if (key_mgmt != WLAN_AKM_SUITE_8021X) {
 281                 vif->auth_mode = NONE_AUTH;
 282         }
 283 }
 284
 285 static bool ath6kl_cfg80211_ready(struct ath6kl_vif *vif)
 286 {
 287         struct ath6kl *ar = vif->ar;
 288
 289         if (!test_bit(WMI_READY, &ar->flag)) {
 290                 ath6kl_err("wmi is not ready\n");
 291                 return false;
 292         }
 293
 294         if (!test_bit(WLAN_ENABLED, &vif->flags)) {
 295                 ath6kl_err("wlan disabled\n");
 296                 return false;
 297         }
 298
 299         return true;
 300 }
 301
 302 static bool ath6kl_is_wpa_ie(const u8 *pos)
 303 {
 304         return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 305                 pos[2] == 0x00 && pos[3] == 0x50 &&
 306                 pos[4] == 0xf2 && pos[5] == 0x01;
 307 }
 308
 309 static bool ath6kl_is_rsn_ie(const u8 *pos)
 310 {
 311         return pos[0] == WLAN_EID_RSN;
 312 }
 313
 314 static bool ath6kl_is_wps_ie(const u8 *pos)
 315 {
 316         return (pos[0] == WLAN_EID_VENDOR_SPECIFIC &&
 317                 pos[1] >= 4 &&
 318                 pos[2] == 0x00 && pos[3] == 0x50 && pos[4] == 0xf2 &&
 319                 pos[5] == 0x04);
 320 }
 321
 322 static int ath6kl_set_assoc_req_ies(struct ath6kl_vif *vif, const u8 *ies,
 323                                     size_t ies_len)
 324 {
 325         struct ath6kl *ar = vif->ar;
 326         const u8 *pos;
 327         u8 *buf = NULL;
 328         size_t len = 0;
 329         int ret;
 330
 331         /*
 332          * Clear previously set flag
 333          */
 334
 335         ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
 336
 337         /*
 338          * Filter out RSN/WPA IE(s)
 339          */
 340
 341         if (ies && ies_len) {
 342                 buf = kmalloc(ies_len, GFP_KERNEL);
 343                 if (buf == NULL)
 344                         return -ENOMEM;
 345                 pos = ies;
 346
 347                 while (pos + 1 < ies + ies_len) {
 348                         if (pos + 2 + pos[1] > ies + ies_len)
 349                                 break;
 350                         if (!(ath6kl_is_wpa_ie(pos) || ath6kl_is_rsn_ie(pos))) {
 351                                 memcpy(buf + len, pos, 2 + pos[1]);
 352                                 len += 2 + pos[1];
 353                         }
 354
 355                         if (ath6kl_is_wps_ie(pos))
 356                                 ar->connect_ctrl_flags |= CONNECT_WPS_FLAG;
 357
 358                         pos += 2 + pos[1];
 359                 }
 360         }
 361
 362         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
 363                                        WMI_FRAME_ASSOC_REQ, buf, len);
 364         kfree(buf);
 365         return ret;
 366 }
 367
 368 static int ath6kl_nliftype_to_drv_iftype(enum nl80211_iftype type, u8 *nw_type)
 369 {
 370         switch (type) {
 371         case NL80211_IFTYPE_STATION:
 372         case NL80211_IFTYPE_P2P_CLIENT:
 373                 *nw_type = INFRA_NETWORK;
 374                 break;
 375         case NL80211_IFTYPE_ADHOC:
 376                 *nw_type = ADHOC_NETWORK;
 377                 break;
 378         case NL80211_IFTYPE_AP:
 379         case NL80211_IFTYPE_P2P_GO:
 380                 *nw_type = AP_NETWORK;
 381                 break;
 382         default:
 383                 ath6kl_err("invalid interface type %u\n", type);
 384                 return -ENOTSUPP;
 385         }
 386
 387         return 0;
 388 }
 389
 390 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type,
 391                                    u8 *if_idx, u8 *nw_type)
 392 {
 393         int i;
 394
 395         if (ath6kl_nliftype_to_drv_iftype(type, nw_type))
 396                 return false;
 397
 398         if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) &&
 399                                    ar->num_vif))
 400                 return false;
 401
 402         if (type == NL80211_IFTYPE_STATION ||
 403             type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
 404                 for (i = 0; i < ar->vif_max; i++) {
 405                         if ((ar->avail_idx_map) & BIT(i)) {
 406                                 *if_idx = i;
 407                                 return true;
 408                         }
 409                 }
 410         }
 411
 412         if (type == NL80211_IFTYPE_P2P_CLIENT ||
 413             type == NL80211_IFTYPE_P2P_GO) {
 414                 for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
 415                         if ((ar->avail_idx_map) & BIT(i)) {
 416                                 *if_idx = i;
 417                                 return true;
 418                         }
 419                 }
 420         }
 421
 422         return false;
 423 }
 424
 425 static bool ath6kl_is_tx_pending(struct ath6kl *ar)
 426 {
 427         return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0;
 428 }
 429
 430 static void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif,
 431                                               bool enable)
 432 {
 433         int err;
 434
 435         if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
 436                 return;
 437
 438         if (vif->nw_type != INFRA_NETWORK)
 439                 return;
 440
 441         if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
 442                       vif->ar->fw_capabilities))
 443                 return;
 444
 445         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
 446                    enable ? "enable" : "disable");
 447
 448         err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
 449                                                vif->fw_vif_idx, enable);
 450         if (err)
 451                 ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
 452                            enable ? "enable" : "disable", err);
 453 }
 454
 455 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 456                                    struct cfg80211_connect_params *sme)
 457 {
 458         struct ath6kl *ar = ath6kl_priv(dev);
 459         struct ath6kl_vif *vif = netdev_priv(dev);
 460         int status;
 461         u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
 462         u16 interval;
 463
 464         ath6kl_cfg80211_sscan_disable(vif);
 465
 466         vif->sme_state = SME_CONNECTING;
 467
 468         if (!ath6kl_cfg80211_ready(vif))
 469                 return -EIO;
 470
 471         if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
 472                 ath6kl_err("destroy in progress\n");
 473                 return -EBUSY;
 474         }
 475
 476         if (test_bit(SKIP_SCAN, &ar->flag) &&
 477             ((sme->channel && sme->channel->center_freq == 0) ||
 478              (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
 479                 ath6kl_err("SkipScan: channel or bssid invalid\n");
 480                 return -EINVAL;
 481         }
 482
 483         if (down_interruptible(&ar->sem)) {
 484                 ath6kl_err("busy, couldn't get access\n");
 485                 return -ERESTARTSYS;
 486         }
 487
 488         if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
 489                 ath6kl_err("busy, destroy in progress\n");
 490                 up(&ar->sem);
 491                 return -EBUSY;
 492         }
 493
 494         if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
 495                 /*
 496                  * sleep until the command queue drains
 497                  */
 498                 wait_event_interruptible_timeout(ar->event_wq,
 499                                                  ath6kl_is_tx_pending(ar),
 500                                                  WMI_TIMEOUT);
 501                 if (signal_pending(current)) {
 502                         ath6kl_err("cmd queue drain timeout\n");
 503                         up(&ar->sem);
 504                         return -EINTR;
 505                 }
 506         }
 507
 508         status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
 509         if (status) {
 510                 up(&ar->sem);
 511                 return status;
 512         }
 513
 514         if (sme->ie == NULL || sme->ie_len == 0)
 515                 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
 516
 517         if (test_bit(CONNECTED, &vif->flags) &&
 518             vif->ssid_len == sme->ssid_len &&
 519             !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
 520                 vif->reconnect_flag = true;
 521                 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx,
 522                                                   vif->req_bssid,
 523                                                   vif->ch_hint);
 524
 525                 up(&ar->sem);
 526                 if (status) {
 527                         ath6kl_err("wmi_reconnect_cmd failed\n");
 528                         return -EIO;
 529                 }
 530                 return 0;
 531         } else if (vif->ssid_len == sme->ssid_len &&
 532                    !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
 533                 ath6kl_disconnect(vif);
 534         }
 535
 536         memset(vif->ssid, 0, sizeof(vif->ssid));
 537         vif->ssid_len = sme->ssid_len;
 538         memcpy(vif->ssid, sme->ssid, sme->ssid_len);
 539
 540         if (sme->channel)
 541                 vif->ch_hint = sme->channel->center_freq;
 542
 543         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
 544         if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
 545                 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid));
 546
 547         ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions);
 548
 549         status = ath6kl_set_auth_type(vif, sme->auth_type);
 550         if (status) {
 551                 up(&ar->sem);
 552                 return status;
 553         }
 554
 555         if (sme->crypto.n_ciphers_pairwise)
 556                 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true);
 557         else
 558                 ath6kl_set_cipher(vif, 0, true);
 559
 560         ath6kl_set_cipher(vif, sme->crypto.cipher_group, false);
 561
 562         if (sme->crypto.n_akm_suites)
 563                 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]);
 564
 565         if ((sme->key_len) &&
 566             (vif->auth_mode == NONE_AUTH) &&
 567             (vif->prwise_crypto == WEP_CRYPT)) {
 568                 struct ath6kl_key *key = NULL;
 569
 570                 if (sme->key_idx > WMI_MAX_KEY_INDEX) {
 571                         ath6kl_err("key index %d out of bounds\n",
 572                                    sme->key_idx);
 573                         up(&ar->sem);
 574                         return -ENOENT;
 575                 }
 576
 577                 key = &vif->keys[sme->key_idx];
 578                 key->key_len = sme->key_len;
 579                 memcpy(key->key, sme->key, key->key_len);
 580                 key->cipher = vif->prwise_crypto;
 581                 vif->def_txkey_index = sme->key_idx;
 582
 583                 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx,
 584                                       vif->prwise_crypto,
 585                                       GROUP_USAGE | TX_USAGE,
 586                                       key->key_len,
 587                                       NULL, 0,
 588                                       key->key, KEY_OP_INIT_VAL, NULL,
 589                                       NO_SYNC_WMIFLAG);
 590         }
 591
 592         if (!ar->usr_bss_filter) {
 593                 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
 594                 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
 595                                              ALL_BSS_FILTER, 0) != 0) {
 596                         ath6kl_err("couldn't set bss filtering\n");
 597                         up(&ar->sem);
 598                         return -EIO;
 599                 }
 600         }
 601
 602         vif->nw_type = vif->next_mode;
 603
 604         /* enable enhanced bmiss detection if applicable */
 605         ath6kl_cfg80211_sta_bmiss_enhance(vif, true);
 606
 607         if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
 608                 nw_subtype = SUBTYPE_P2PCLIENT;
 609
 610         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 611                    "%s: connect called with authmode %d dot11 auth %d"
 612                    " PW crypto %d PW crypto len %d GRP crypto %d"
 613                    " GRP crypto len %d channel hint %u\n",
 614                    __func__,
 615                    vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
 616                    vif->prwise_crypto_len, vif->grp_crypto,
 617                    vif->grp_crypto_len, vif->ch_hint);
 618
 619         vif->reconnect_flag = 0;
 620
 621         if (vif->nw_type == INFRA_NETWORK) {
 622                 interval = max_t(u16, vif->listen_intvl_t,
 623                                  ATH6KL_MAX_WOW_LISTEN_INTL);
 624                 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
 625                                                        interval,
 626                                                        0);
 627                 if (status) {
 628                         ath6kl_err("couldn't set listen intervel\n");
 629                         up(&ar->sem);
 630                         return status;
 631                 }
 632         }
 633
 634         status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
 635                                         vif->dot11_auth_mode, vif->auth_mode,
 636                                         vif->prwise_crypto,
 637                                         vif->prwise_crypto_len,
 638                                         vif->grp_crypto, vif->grp_crypto_len,
 639                                         vif->ssid_len, vif->ssid,
 640                                         vif->req_bssid, vif->ch_hint,
 641                                         ar->connect_ctrl_flags, nw_subtype);
 642
 643         if (sme->bg_scan_period == 0) {
 644                 /* disable background scan if period is 0 */
 645                 sme->bg_scan_period = 0xffff;
 646         } else if (sme->bg_scan_period == -1) {
 647                 /* configure default value if not specified */
 648                 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
 649         }
 650
 651         ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
 652                                   sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
 653
 654         up(&ar->sem);
 655
 656         if (status == -EINVAL) {
 657                 memset(vif->ssid, 0, sizeof(vif->ssid));
 658                 vif->ssid_len = 0;
 659                 ath6kl_err("invalid request\n");
 660                 return -ENOENT;
 661         } else if (status) {
 662                 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
 663                 return -EIO;
 664         }
 665
 666         if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
 667             ((vif->auth_mode == WPA_PSK_AUTH) ||
 668              (vif->auth_mode == WPA2_PSK_AUTH))) {
 669                 mod_timer(&vif->disconnect_timer,
 670                           jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
 671         }
 672
 673         ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
 674         set_bit(CONNECT_PEND, &vif->flags);
 675
 676         return 0;
 677 }
 678
 679 static struct cfg80211_bss *
 680 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif,
 681                          enum network_type nw_type,
 682                          const u8 *bssid,
 683                          struct ieee80211_channel *chan,
 684                          const u8 *beacon_ie,
 685                          size_t beacon_ie_len)
 686 {
 687         struct ath6kl *ar = vif->ar;
 688         struct cfg80211_bss *bss;
 689         u16 cap_mask, cap_val;
 690         u8 *ie;
 691
 692         if (nw_type & ADHOC_NETWORK) {
 693                 cap_mask = WLAN_CAPABILITY_IBSS;
 694                 cap_val = WLAN_CAPABILITY_IBSS;
 695         } else {
 696                 cap_mask = WLAN_CAPABILITY_ESS;
 697                 cap_val = WLAN_CAPABILITY_ESS;
 698         }
 699
 700         bss = cfg80211_get_bss(ar->wiphy, chan, bssid,
 701                                vif->ssid, vif->ssid_len,
 702                                cap_mask, cap_val);
 703         if (bss == NULL) {
 704                 /*
 705                  * Since cfg80211 may not yet know about the BSS,
 706                  * generate a partial entry until the first BSS info
 707                  * event becomes available.
 708                  *
 709                  * Prepend SSID element since it is not included in the Beacon
 710                  * IEs from the target.
 711                  */
 712                 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL);
 713                 if (ie == NULL)
 714                         return NULL;
 715                 ie[0] = WLAN_EID_SSID;
 716                 ie[1] = vif->ssid_len;
 717                 memcpy(ie + 2, vif->ssid, vif->ssid_len);
 718                 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len);
 719                 bss = cfg80211_inform_bss(ar->wiphy, chan,
 720                                           bssid, 0, cap_val, 100,
 721                                           ie, 2 + vif->ssid_len + beacon_ie_len,
 722                                           0, GFP_KERNEL);
 723                 if (bss)
 724                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 725                                    "added bss %pM to cfg80211\n", bssid);
 726                 kfree(ie);
 727         } else
 728                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n");
 729
 730         return bss;
 731 }
 732
 733 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
 734                                    u8 *bssid, u16 listen_intvl,
 735                                    u16 beacon_intvl,
 736                                    enum network_type nw_type,
 737                                    u8 beacon_ie_len, u8 assoc_req_len,
 738                                    u8 assoc_resp_len, u8 *assoc_info)
 739 {
 740         struct ieee80211_channel *chan;
 741         struct ath6kl *ar = vif->ar;
 742         struct cfg80211_bss *bss;
 743
 744         /* capinfo + listen interval */
 745         u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
 746
 747         /* capinfo + status code +  associd */
 748         u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
 749
 750         u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
 751         u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
 752             assoc_resp_ie_offset;
 753
 754         assoc_req_len -= assoc_req_ie_offset;
 755         assoc_resp_len -= assoc_resp_ie_offset;
 756
 757         /*
 758          * Store Beacon interval here; DTIM period will be available only once
 759          * a Beacon frame from the AP is seen.
 760          */
 761         vif->assoc_bss_beacon_int = beacon_intvl;
 762         clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
 763
 764         if (nw_type & ADHOC_NETWORK) {
 765                 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
 766                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 767                                    "%s: ath6k not in ibss mode\n", __func__);
 768                         return;
 769                 }
 770         }
 771
 772         if (nw_type & INFRA_NETWORK) {
 773                 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
 774                     vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
 775                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 776                                    "%s: ath6k not in station mode\n", __func__);
 777                         return;
 778                 }
 779         }
 780
 781         chan = ieee80211_get_channel(ar->wiphy, (int) channel);
 782
 783         bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
 784                                        assoc_info, beacon_ie_len);
 785         if (!bss) {
 786                 ath6kl_err("could not add cfg80211 bss entry\n");
 787                 return;
 788         }
 789
 790         if (nw_type & ADHOC_NETWORK) {
 791                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
 792                            nw_type & ADHOC_CREATOR ? "creator" : "joiner");
 793                 cfg80211_ibss_joined(vif->ndev, bssid, chan, GFP_KERNEL);
 794                 cfg80211_put_bss(ar->wiphy, bss);
 795                 return;
 796         }
 797
 798         if (vif->sme_state == SME_CONNECTING) {
 799                 /* inform connect result to cfg80211 */
 800                 vif->sme_state = SME_CONNECTED;
 801                 cfg80211_connect_result(vif->ndev, bssid,
 802                                         assoc_req_ie, assoc_req_len,
 803                                         assoc_resp_ie, assoc_resp_len,
 804                                         WLAN_STATUS_SUCCESS, GFP_KERNEL);
 805                 cfg80211_put_bss(ar->wiphy, bss);
 806         } else if (vif->sme_state == SME_CONNECTED) {
 807                 /* inform roam event to cfg80211 */
 808                 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len,
 809                                     assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
 810         }
 811 }
 812
 813 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
 814                                       struct net_device *dev, u16 reason_code)
 815 {
 816         struct ath6kl *ar = ath6kl_priv(dev);
 817         struct ath6kl_vif *vif = netdev_priv(dev);
 818
 819         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
 820                    reason_code);
 821
 822         ath6kl_cfg80211_sscan_disable(vif);
 823
 824         if (!ath6kl_cfg80211_ready(vif))
 825                 return -EIO;
 826
 827         if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
 828                 ath6kl_err("busy, destroy in progress\n");
 829                 return -EBUSY;
 830         }
 831
 832         if (down_interruptible(&ar->sem)) {
 833                 ath6kl_err("busy, couldn't get access\n");
 834                 return -ERESTARTSYS;
 835         }
 836
 837         vif->reconnect_flag = 0;
 838         ath6kl_disconnect(vif);
 839         memset(vif->ssid, 0, sizeof(vif->ssid));
 840         vif->ssid_len = 0;
 841
 842         if (!test_bit(SKIP_SCAN, &ar->flag))
 843                 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
 844
 845         up(&ar->sem);
 846
 847         vif->sme_state = SME_DISCONNECTED;
 848
 849         return 0;
 850 }
 851
 852 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
 853                                       u8 *bssid, u8 assoc_resp_len,
 854                                       u8 *assoc_info, u16 proto_reason)
 855 {
 856         struct ath6kl *ar = vif->ar;
 857
 858         if (vif->scan_req) {
 859                 cfg80211_scan_done(vif->scan_req, true);
 860                 vif->scan_req = NULL;
 861         }
 862
 863         if (vif->nw_type & ADHOC_NETWORK) {
 864                 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC)
 865                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 866                                    "%s: ath6k not in ibss mode\n", __func__);
 867                 return;
 868         }
 869
 870         if (vif->nw_type & INFRA_NETWORK) {
 871                 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
 872                     vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
 873                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 874                                    "%s: ath6k not in station mode\n", __func__);
 875                         return;
 876                 }
 877         }
 878
 879         clear_bit(CONNECT_PEND, &vif->flags);
 880
 881         if (vif->sme_state == SME_CONNECTING) {
 882                 cfg80211_connect_result(vif->ndev,
 883                                         bssid, NULL, 0,
 884                                         NULL, 0,
 885                                         WLAN_STATUS_UNSPECIFIED_FAILURE,
 886                                         GFP_KERNEL);
 887         } else if (vif->sme_state == SME_CONNECTED) {
 888                 cfg80211_disconnected(vif->ndev, proto_reason,
 889                                       NULL, 0, GFP_KERNEL);
 890         }
 891
 892         vif->sme_state = SME_DISCONNECTED;
 893
 894         /*
 895          * Send a disconnect command to target when a disconnect event is
 896          * received with reason code other than 3 (DISCONNECT_CMD - disconnect
 897          * request from host) to make the firmware stop trying to connect even
 898          * after giving disconnect event. There will be one more disconnect
 899          * event for this disconnect command with reason code DISCONNECT_CMD
 900          * which won't be notified to cfg80211.
 901          */
 902         if (reason != DISCONNECT_CMD)
 903                 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
 904 }
 905
 906 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
 907                                    struct ath6kl_vif *vif,
 908                                    struct cfg80211_ssid *ssids, int n_ssids,
 909                                    struct cfg80211_match_set *match_set,
 910                                    int n_match_ssid)
 911 {
 912         u8 i, j, index_to_add, ssid_found = false;
 913         struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS];
 914
 915         memset(ssid_list, 0, sizeof(ssid_list));
 916
 917         if (n_ssids > MAX_PROBED_SSIDS ||
 918             n_match_ssid > MAX_PROBED_SSIDS)
 919                 return -EINVAL;
 920
 921         for (i = 0; i < n_ssids; i++) {
 922                 memcpy(ssid_list[i].ssid.ssid,
 923                        ssids[i].ssid,
 924                        ssids[i].ssid_len);
 925                 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len;
 926
 927                 if (ssids[i].ssid_len)
 928                         ssid_list[i].flag = SPECIFIC_SSID_FLAG;
 929                 else
 930                         ssid_list[i].flag = ANY_SSID_FLAG;
 931
 932                 if (n_match_ssid == 0)
 933                         ssid_list[i].flag |= MATCH_SSID_FLAG;
 934         }
 935
 936         index_to_add = i;
 937
 938         for (i = 0; i < n_match_ssid; i++) {
 939                 ssid_found = false;
 940
 941                 for (j = 0; j < n_ssids; j++) {
 942                         if ((match_set[i].ssid.ssid_len ==
 943                              ssid_list[j].ssid.ssid_len) &&
 944                             (!memcmp(ssid_list[j].ssid.ssid,
 945                                      match_set[i].ssid.ssid,
 946                                      match_set[i].ssid.ssid_len))) {
 947                                 ssid_list[j].flag |= MATCH_SSID_FLAG;
 948                                 ssid_found = true;
 949                                 break;
 950                         }
 951                 }
 952
 953                 if (ssid_found)
 954                         continue;
 955
 956                 if (index_to_add >= MAX_PROBED_SSIDS)
 957                         continue;
 958
 959                 ssid_list[index_to_add].ssid.ssid_len =
 960                         match_set[i].ssid.ssid_len;
 961                 memcpy(ssid_list[index_to_add].ssid.ssid,
 962                        match_set[i].ssid.ssid,
 963                        match_set[i].ssid.ssid_len);
 964                 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG;
 965                 index_to_add++;
 966         }
 967
 968         for (i = 0; i < index_to_add; i++) {
 969                 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
 970                                           ssid_list[i].flag,
 971                                           ssid_list[i].ssid.ssid_len,
 972                                           ssid_list[i].ssid.ssid);
 973
 974         }
 975
 976         /* Make sure no old entries are left behind */
 977         for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) {
 978                 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
 979                                           DISABLE_SSID_FLAG, 0, NULL);
 980         }
 981
 982         return 0;
 983 }
 984
 985 static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
 986                                 struct cfg80211_scan_request *request)
 987 {
 988         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
 989         struct ath6kl *ar = ath6kl_priv(vif->ndev);
 990         s8 n_channels = 0;
 991         u16 *channels = NULL;
 992         int ret = 0;
 993         u32 force_fg_scan = 0;
 994
 995         if (!ath6kl_cfg80211_ready(vif))
 996                 return -EIO;
 997
 998         ath6kl_cfg80211_sscan_disable(vif);
 999
1000         if (!ar->usr_bss_filter) {
1001                 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
1002                 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
1003                                                ALL_BSS_FILTER, 0);
1004                 if (ret) {
1005                         ath6kl_err("couldn't set bss filtering\n");
1006                         return ret;
1007                 }
1008         }
1009
1010         ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
1011                                       request->n_ssids, NULL, 0);
1012         if (ret < 0)
1013                 return ret;
1014
1015         /* this also clears IE in fw if it's not set */
1016         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
1017                                        WMI_FRAME_PROBE_REQ,
1018                                        request->ie, request->ie_len);
1019         if (ret) {
1020                 ath6kl_err("failed to set Probe Request appie for scan\n");
1021                 return ret;
1022         }
1023
1024         /*
1025          * Scan only the requested channels if the request specifies a set of
1026          * channels. If the list is longer than the target supports, do not
1027          * configure the list and instead, scan all available channels.
1028          */
1029         if (request->n_channels > 0 &&
1030             request->n_channels <= WMI_MAX_CHANNELS) {
1031                 u8 i;
1032
1033                 n_channels = request->n_channels;
1034
1035                 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
1036                 if (channels == NULL) {
1037                         ath6kl_warn("failed to set scan channels, scan all channels");
1038                         n_channels = 0;
1039                 }
1040
1041                 for (i = 0; i < n_channels; i++)
1042                         channels[i] = request->channels[i]->center_freq;
1043         }
1044
1045         if (test_bit(CONNECTED, &vif->flags))
1046                 force_fg_scan = 1;
1047
1048         vif->scan_req = request;
1049
1050         ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
1051                                        WMI_LONG_SCAN, force_fg_scan,
1052                                        false, 0,
1053                                        ATH6KL_FG_SCAN_INTERVAL,
1054                                        n_channels, channels,
1055                                        request->no_cck,
1056                                        request->rates);
1057         if (ret) {
1058                 ath6kl_err("failed to start scan: %d\n", ret);
1059                 vif->scan_req = NULL;
1060         }
1061
1062         kfree(channels);
1063
1064         return ret;
1065 }
1066
1067 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1068 {
1069         struct ath6kl *ar = vif->ar;
1070         int i;
1071
1072         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1073                    aborted ? " aborted" : "");
1074
1075         if (!vif->scan_req)
1076                 return;
1077
1078         if (aborted)
1079                 goto out;
1080
1081         if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1082                 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1083                         ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1084                                                   i + 1, DISABLE_SSID_FLAG,
1085                                                   0, NULL);
1086                 }
1087         }
1088
1089 out:
1090         cfg80211_scan_done(vif->scan_req, aborted);
1091         vif->scan_req = NULL;
1092 }
1093
1094 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1095                                       enum wmi_phy_mode mode)
1096 {
1097         struct cfg80211_chan_def chandef;
1098
1099         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1100                    "channel switch notify nw_type %d freq %d mode %d\n",
1101                    vif->nw_type, freq, mode);
1102
1103         cfg80211_chandef_create(&chandef,
1104                                 ieee80211_get_channel(vif->ar->wiphy, freq),
1105                                 (mode == WMI_11G_HT20) ?
1106                                         NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT);
1107
1108         mutex_lock(&vif->wdev.mtx);
1109         cfg80211_ch_switch_notify(vif->ndev, &chandef);
1110         mutex_unlock(&vif->wdev.mtx);
1111 }
1112
1113 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1114                                    u8 key_index, bool pairwise,
1115                                    const u8 *mac_addr,
1116                                    struct key_params *params)
1117 {
1118         struct ath6kl *ar = ath6kl_priv(ndev);
1119         struct ath6kl_vif *vif = netdev_priv(ndev);
1120         struct ath6kl_key *key = NULL;
1121         int seq_len;
1122         u8 key_usage;
1123         u8 key_type;
1124
1125         if (!ath6kl_cfg80211_ready(vif))
1126                 return -EIO;
1127
1128         if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1129                 if (params->key_len != WMI_KRK_LEN)
1130                         return -EINVAL;
1131                 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1132                                               params->key);
1133         }
1134
1135         if (key_index > WMI_MAX_KEY_INDEX) {
1136                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1137                            "%s: key index %d out of bounds\n", __func__,
1138                            key_index);
1139                 return -ENOENT;
1140         }
1141
1142         key = &vif->keys[key_index];
1143         memset(key, 0, sizeof(struct ath6kl_key));
1144
1145         if (pairwise)
1146                 key_usage = PAIRWISE_USAGE;
1147         else
1148                 key_usage = GROUP_USAGE;
1149
1150         seq_len = params->seq_len;
1151         if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1152             seq_len > ATH6KL_KEY_SEQ_LEN) {
1153                 /* Only first half of the WPI PN is configured */
1154                 seq_len = ATH6KL_KEY_SEQ_LEN;
1155         }
1156         if (params->key_len > WLAN_MAX_KEY_LEN ||
1157             seq_len > sizeof(key->seq))
1158                 return -EINVAL;
1159
1160         key->key_len = params->key_len;
1161         memcpy(key->key, params->key, key->key_len);
1162         key->seq_len = seq_len;
1163         memcpy(key->seq, params->seq, key->seq_len);
1164         key->cipher = params->cipher;
1165
1166         switch (key->cipher) {
1167         case WLAN_CIPHER_SUITE_WEP40:
1168         case WLAN_CIPHER_SUITE_WEP104:
1169                 key_type = WEP_CRYPT;
1170                 break;
1171
1172         case WLAN_CIPHER_SUITE_TKIP:
1173                 key_type = TKIP_CRYPT;
1174                 break;
1175
1176         case WLAN_CIPHER_SUITE_CCMP:
1177                 key_type = AES_CRYPT;
1178                 break;
1179         case WLAN_CIPHER_SUITE_SMS4:
1180                 key_type = WAPI_CRYPT;
1181                 break;
1182
1183         default:
1184                 return -ENOTSUPP;
1185         }
1186
1187         if (((vif->auth_mode == WPA_PSK_AUTH) ||
1188              (vif->auth_mode == WPA2_PSK_AUTH)) &&
1189             (key_usage & GROUP_USAGE))
1190                 del_timer(&vif->disconnect_timer);
1191
1192         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1193                    "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1194                    __func__, key_index, key->key_len, key_type,
1195                    key_usage, key->seq_len);
1196
1197         if (vif->nw_type == AP_NETWORK && !pairwise &&
1198             (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1199              key_type == WAPI_CRYPT)) {
1200                 ar->ap_mode_bkey.valid = true;
1201                 ar->ap_mode_bkey.key_index = key_index;
1202                 ar->ap_mode_bkey.key_type = key_type;
1203                 ar->ap_mode_bkey.key_len = key->key_len;
1204                 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1205                 if (!test_bit(CONNECTED, &vif->flags)) {
1206                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1207                                    "Delay initial group key configuration until AP mode has been started\n");
1208                         /*
1209                          * The key will be set in ath6kl_connect_ap_mode() once
1210                          * the connected event is received from the target.
1211                          */
1212                         return 0;
1213                 }
1214         }
1215
1216         if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1217             !test_bit(CONNECTED, &vif->flags)) {
1218                 /*
1219                  * Store the key locally so that it can be re-configured after
1220                  * the AP mode has properly started
1221                  * (ath6kl_install_statioc_wep_keys).
1222                  */
1223                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1224                            "Delay WEP key configuration until AP mode has been started\n");
1225                 vif->wep_key_list[key_index].key_len = key->key_len;
1226                 memcpy(vif->wep_key_list[key_index].key, key->key,
1227                        key->key_len);
1228                 return 0;
1229         }
1230
1231         return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1232                                      key_type, key_usage, key->key_len,
1233                                      key->seq, key->seq_len, key->key,
1234                                      KEY_OP_INIT_VAL,
1235                                      (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1236 }
1237
1238 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1239                                    u8 key_index, bool pairwise,
1240                                    const u8 *mac_addr)
1241 {
1242         struct ath6kl *ar = ath6kl_priv(ndev);
1243         struct ath6kl_vif *vif = netdev_priv(ndev);
1244
1245         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1246
1247         if (!ath6kl_cfg80211_ready(vif))
1248                 return -EIO;
1249
1250         if (key_index > WMI_MAX_KEY_INDEX) {
1251                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1252                            "%s: key index %d out of bounds\n", __func__,
1253                            key_index);
1254                 return -ENOENT;
1255         }
1256
1257         if (!vif->keys[key_index].key_len) {
1258                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1259                            "%s: index %d is empty\n", __func__, key_index);
1260                 return 0;
1261         }
1262
1263         vif->keys[key_index].key_len = 0;
1264
1265         return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1266 }
1267
1268 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1269                                    u8 key_index, bool pairwise,
1270                                    const u8 *mac_addr, void *cookie,
1271                                    void (*callback) (void *cookie,
1272                                                      struct key_params *))
1273 {
1274         struct ath6kl_vif *vif = netdev_priv(ndev);
1275         struct ath6kl_key *key = NULL;
1276         struct key_params params;
1277
1278         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1279
1280         if (!ath6kl_cfg80211_ready(vif))
1281                 return -EIO;
1282
1283         if (key_index > WMI_MAX_KEY_INDEX) {
1284                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1285                            "%s: key index %d out of bounds\n", __func__,
1286                            key_index);
1287                 return -ENOENT;
1288         }
1289
1290         key = &vif->keys[key_index];
1291         memset(&params, 0, sizeof(params));
1292         params.cipher = key->cipher;
1293         params.key_len = key->key_len;
1294         params.seq_len = key->seq_len;
1295         params.seq = key->seq;
1296         params.key = key->key;
1297
1298         callback(cookie, &params);
1299
1300         return key->key_len ? 0 : -ENOENT;
1301 }
1302
1303 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1304                                            struct net_device *ndev,
1305                                            u8 key_index, bool unicast,
1306                                            bool multicast)
1307 {
1308         struct ath6kl *ar = ath6kl_priv(ndev);
1309         struct ath6kl_vif *vif = netdev_priv(ndev);
1310         struct ath6kl_key *key = NULL;
1311         u8 key_usage;
1312         enum crypto_type key_type = NONE_CRYPT;
1313
1314         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1315
1316         if (!ath6kl_cfg80211_ready(vif))
1317                 return -EIO;
1318
1319         if (key_index > WMI_MAX_KEY_INDEX) {
1320                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1321                            "%s: key index %d out of bounds\n",
1322                            __func__, key_index);
1323                 return -ENOENT;
1324         }
1325
1326         if (!vif->keys[key_index].key_len) {
1327                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1328                            __func__, key_index);
1329                 return -EINVAL;
1330         }
1331
1332         vif->def_txkey_index = key_index;
1333         key = &vif->keys[vif->def_txkey_index];
1334         key_usage = GROUP_USAGE;
1335         if (vif->prwise_crypto == WEP_CRYPT)
1336                 key_usage |= TX_USAGE;
1337         if (unicast)
1338                 key_type = vif->prwise_crypto;
1339         if (multicast)
1340                 key_type = vif->grp_crypto;
1341
1342         if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1343                 return 0; /* Delay until AP mode has been started */
1344
1345         return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1346                                      vif->def_txkey_index,
1347                                      key_type, key_usage,
1348                                      key->key_len, key->seq, key->seq_len,
1349                                      key->key,
1350                                      KEY_OP_INIT_VAL, NULL,
1351                                      SYNC_BOTH_WMIFLAG);
1352 }
1353
1354 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1355                                        bool ismcast)
1356 {
1357         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1358                    "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1359
1360         cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1361                                      (ismcast ? NL80211_KEYTYPE_GROUP :
1362                                       NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1363                                      GFP_KERNEL);
1364 }
1365
1366 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1367 {
1368         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1369         struct ath6kl_vif *vif;
1370         int ret;
1371
1372         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1373                    changed);
1374
1375         vif = ath6kl_vif_first(ar);
1376         if (!vif)
1377                 return -EIO;
1378
1379         if (!ath6kl_cfg80211_ready(vif))
1380                 return -EIO;
1381
1382         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1383                 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1384                 if (ret != 0) {
1385                         ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1386                         return -EIO;
1387                 }
1388         }
1389
1390         return 0;
1391 }
1392
1393 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1394                                        struct wireless_dev *wdev,
1395                                        enum nl80211_tx_power_setting type,
1396                                        int mbm)
1397 {
1398         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1399         struct ath6kl_vif *vif;
1400         int dbm = MBM_TO_DBM(mbm);
1401
1402         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1403                    type, dbm);
1404
1405         vif = ath6kl_vif_first(ar);
1406         if (!vif)
1407                 return -EIO;
1408
1409         if (!ath6kl_cfg80211_ready(vif))
1410                 return -EIO;
1411
1412         switch (type) {
1413         case NL80211_TX_POWER_AUTOMATIC:
1414                 return 0;
1415         case NL80211_TX_POWER_LIMITED:
1416                 ar->tx_pwr = dbm;
1417                 break;
1418         default:
1419                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1420                            __func__, type);
1421                 return -EOPNOTSUPP;
1422         }
1423
1424         ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1425
1426         return 0;
1427 }
1428
1429 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy,
1430                                        struct wireless_dev *wdev,
1431                                        int *dbm)
1432 {
1433         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1434         struct ath6kl_vif *vif;
1435
1436         vif = ath6kl_vif_first(ar);
1437         if (!vif)
1438                 return -EIO;
1439
1440         if (!ath6kl_cfg80211_ready(vif))
1441                 return -EIO;
1442
1443         if (test_bit(CONNECTED, &vif->flags)) {
1444                 ar->tx_pwr = 0;
1445
1446                 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1447                         ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1448                         return -EIO;
1449                 }
1450
1451                 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1452                                                  5 * HZ);
1453
1454                 if (signal_pending(current)) {
1455                         ath6kl_err("target did not respond\n");
1456                         return -EINTR;
1457                 }
1458         }
1459
1460         *dbm = ar->tx_pwr;
1461         return 0;
1462 }
1463
1464 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1465                                           struct net_device *dev,
1466                                           bool pmgmt, int timeout)
1467 {
1468         struct ath6kl *ar = ath6kl_priv(dev);
1469         struct wmi_power_mode_cmd mode;
1470         struct ath6kl_vif *vif = netdev_priv(dev);
1471
1472         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1473                    __func__, pmgmt, timeout);
1474
1475         if (!ath6kl_cfg80211_ready(vif))
1476                 return -EIO;
1477
1478         if (pmgmt) {
1479                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1480                 mode.pwr_mode = REC_POWER;
1481         } else {
1482                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1483                 mode.pwr_mode = MAX_PERF_POWER;
1484         }
1485
1486         if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1487                                      mode.pwr_mode) != 0) {
1488                 ath6kl_err("wmi_powermode_cmd failed\n");
1489                 return -EIO;
1490         }
1491
1492         return 0;
1493 }
1494
1495 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1496                                                       const char *name,
1497                                                       enum nl80211_iftype type,
1498                                                       u32 *flags,
1499                                                       struct vif_params *params)
1500 {
1501         struct ath6kl *ar = wiphy_priv(wiphy);
1502         struct wireless_dev *wdev;
1503         u8 if_idx, nw_type;
1504
1505         if (ar->num_vif == ar->vif_max) {
1506                 ath6kl_err("Reached maximum number of supported vif\n");
1507                 return ERR_PTR(-EINVAL);
1508         }
1509
1510         if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1511                 ath6kl_err("Not a supported interface type\n");
1512                 return ERR_PTR(-EINVAL);
1513         }
1514
1515         wdev = ath6kl_interface_add(ar, name, type, if_idx, nw_type);
1516         if (!wdev)
1517                 return ERR_PTR(-ENOMEM);
1518
1519         ar->num_vif++;
1520
1521         return wdev;
1522 }
1523
1524 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1525                                      struct wireless_dev *wdev)
1526 {
1527         struct ath6kl *ar = wiphy_priv(wiphy);
1528         struct ath6kl_vif *vif = netdev_priv(wdev->netdev);
1529
1530         spin_lock_bh(&ar->list_lock);
1531         list_del(&vif->list);
1532         spin_unlock_bh(&ar->list_lock);
1533
1534         ath6kl_cfg80211_vif_stop(vif, test_bit(WMI_READY, &ar->flag));
1535
1536         rtnl_lock();
1537         ath6kl_cfg80211_vif_cleanup(vif);
1538         rtnl_unlock();
1539
1540         return 0;
1541 }
1542
1543 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1544                                         struct net_device *ndev,
1545                                         enum nl80211_iftype type, u32 *flags,
1546                                         struct vif_params *params)
1547 {
1548         struct ath6kl_vif *vif = netdev_priv(ndev);
1549         int i;
1550
1551         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1552
1553         /*
1554          * Don't bring up p2p on an interface which is not initialized
1555          * for p2p operation where fw does not have capability to switch
1556          * dynamically between non-p2p and p2p type interface.
1557          */
1558         if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1559                       vif->ar->fw_capabilities) &&
1560             (type == NL80211_IFTYPE_P2P_CLIENT ||
1561              type == NL80211_IFTYPE_P2P_GO)) {
1562                 if (vif->ar->vif_max == 1) {
1563                         if (vif->fw_vif_idx != 0)
1564                                 return -EINVAL;
1565                         else
1566                                 goto set_iface_type;
1567                 }
1568
1569                 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1570                         if (i == vif->fw_vif_idx)
1571                                 break;
1572                 }
1573
1574                 if (i == vif->ar->vif_max) {
1575                         ath6kl_err("Invalid interface to bring up P2P\n");
1576                         return -EINVAL;
1577                 }
1578         }
1579
1580         /* need to clean up enhanced bmiss detection fw state */
1581         ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1582
1583 set_iface_type:
1584         switch (type) {
1585         case NL80211_IFTYPE_STATION:
1586         case NL80211_IFTYPE_P2P_CLIENT:
1587                 vif->next_mode = INFRA_NETWORK;
1588                 break;
1589         case NL80211_IFTYPE_ADHOC:
1590                 vif->next_mode = ADHOC_NETWORK;
1591                 break;
1592         case NL80211_IFTYPE_AP:
1593         case NL80211_IFTYPE_P2P_GO:
1594                 vif->next_mode = AP_NETWORK;
1595                 break;
1596         default:
1597                 ath6kl_err("invalid interface type %u\n", type);
1598                 return -EOPNOTSUPP;
1599         }
1600
1601         vif->wdev.iftype = type;
1602
1603         return 0;
1604 }
1605
1606 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1607                                      struct net_device *dev,
1608                                      struct cfg80211_ibss_params *ibss_param)
1609 {
1610         struct ath6kl *ar = ath6kl_priv(dev);
1611         struct ath6kl_vif *vif = netdev_priv(dev);
1612         int status;
1613
1614         if (!ath6kl_cfg80211_ready(vif))
1615                 return -EIO;
1616
1617         vif->ssid_len = ibss_param->ssid_len;
1618         memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1619
1620         if (ibss_param->chandef.chan)
1621                 vif->ch_hint = ibss_param->chandef.chan->center_freq;
1622
1623         if (ibss_param->channel_fixed) {
1624                 /*
1625                  * TODO: channel_fixed: The channel should be fixed, do not
1626                  * search for IBSSs to join on other channels. Target
1627                  * firmware does not support this feature, needs to be
1628                  * updated.
1629                  */
1630                 return -EOPNOTSUPP;
1631         }
1632
1633         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1634         if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1635                 memcpy(vif->req_bssid, ibss_param->bssid,
1636                        sizeof(vif->req_bssid));
1637
1638         ath6kl_set_wpa_version(vif, 0);
1639
1640         status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1641         if (status)
1642                 return status;
1643
1644         if (ibss_param->privacy) {
1645                 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1646                 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1647         } else {
1648                 ath6kl_set_cipher(vif, 0, true);
1649                 ath6kl_set_cipher(vif, 0, false);
1650         }
1651
1652         vif->nw_type = vif->next_mode;
1653
1654         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1655                    "%s: connect called with authmode %d dot11 auth %d"
1656                    " PW crypto %d PW crypto len %d GRP crypto %d"
1657                    " GRP crypto len %d channel hint %u\n",
1658                    __func__,
1659                    vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1660                    vif->prwise_crypto_len, vif->grp_crypto,
1661                    vif->grp_crypto_len, vif->ch_hint);
1662
1663         status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1664                                         vif->dot11_auth_mode, vif->auth_mode,
1665                                         vif->prwise_crypto,
1666                                         vif->prwise_crypto_len,
1667                                         vif->grp_crypto, vif->grp_crypto_len,
1668                                         vif->ssid_len, vif->ssid,
1669                                         vif->req_bssid, vif->ch_hint,
1670                                         ar->connect_ctrl_flags, SUBTYPE_NONE);
1671         set_bit(CONNECT_PEND, &vif->flags);
1672
1673         return 0;
1674 }
1675
1676 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1677                                       struct net_device *dev)
1678 {
1679         struct ath6kl_vif *vif = netdev_priv(dev);
1680
1681         if (!ath6kl_cfg80211_ready(vif))
1682                 return -EIO;
1683
1684         ath6kl_disconnect(vif);
1685         memset(vif->ssid, 0, sizeof(vif->ssid));
1686         vif->ssid_len = 0;
1687
1688         return 0;
1689 }
1690
1691 static const u32 cipher_suites[] = {
1692         WLAN_CIPHER_SUITE_WEP40,
1693         WLAN_CIPHER_SUITE_WEP104,
1694         WLAN_CIPHER_SUITE_TKIP,
1695         WLAN_CIPHER_SUITE_CCMP,
1696         CCKM_KRK_CIPHER_SUITE,
1697         WLAN_CIPHER_SUITE_SMS4,
1698 };
1699
1700 static bool is_rate_legacy(s32 rate)
1701 {
1702         static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1703                 6000, 9000, 12000, 18000, 24000,
1704                 36000, 48000, 54000
1705         };
1706         u8 i;
1707
1708         for (i = 0; i < ARRAY_SIZE(legacy); i++)
1709                 if (rate == legacy[i])
1710                         return true;
1711
1712         return false;
1713 }
1714
1715 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1716 {
1717         static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1718                 52000, 58500, 65000, 72200
1719         };
1720         u8 i;
1721
1722         for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1723                 if (rate == ht20[i]) {
1724                         if (i == ARRAY_SIZE(ht20) - 1)
1725                                 /* last rate uses sgi */
1726                                 *sgi = true;
1727                         else
1728                                 *sgi = false;
1729
1730                         *mcs = i;
1731                         return true;
1732                 }
1733         }
1734         return false;
1735 }
1736
1737 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1738 {
1739         static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1740                 81000, 108000, 121500, 135000,
1741                 150000
1742         };
1743         u8 i;
1744
1745         for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1746                 if (rate == ht40[i]) {
1747                         if (i == ARRAY_SIZE(ht40) - 1)
1748                                 /* last rate uses sgi */
1749                                 *sgi = true;
1750                         else
1751                                 *sgi = false;
1752
1753                         *mcs = i;
1754                         return true;
1755                 }
1756         }
1757
1758         return false;
1759 }
1760
1761 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1762                               u8 *mac, struct station_info *sinfo)
1763 {
1764         struct ath6kl *ar = ath6kl_priv(dev);
1765         struct ath6kl_vif *vif = netdev_priv(dev);
1766         long left;
1767         bool sgi;
1768         s32 rate;
1769         int ret;
1770         u8 mcs;
1771
1772         if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1773                 return -ENOENT;
1774
1775         if (down_interruptible(&ar->sem))
1776                 return -EBUSY;
1777
1778         set_bit(STATS_UPDATE_PEND, &vif->flags);
1779
1780         ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1781
1782         if (ret != 0) {
1783                 up(&ar->sem);
1784                 return -EIO;
1785         }
1786
1787         left = wait_event_interruptible_timeout(ar->event_wq,
1788                                                 !test_bit(STATS_UPDATE_PEND,
1789                                                           &vif->flags),
1790                                                 WMI_TIMEOUT);
1791
1792         up(&ar->sem);
1793
1794         if (left == 0)
1795                 return -ETIMEDOUT;
1796         else if (left < 0)
1797                 return left;
1798
1799         if (vif->target_stats.rx_byte) {
1800                 sinfo->rx_bytes = vif->target_stats.rx_byte;
1801                 sinfo->filled |= STATION_INFO_RX_BYTES64;
1802                 sinfo->rx_packets = vif->target_stats.rx_pkt;
1803                 sinfo->filled |= STATION_INFO_RX_PACKETS;
1804         }
1805
1806         if (vif->target_stats.tx_byte) {
1807                 sinfo->tx_bytes = vif->target_stats.tx_byte;
1808                 sinfo->filled |= STATION_INFO_TX_BYTES64;
1809                 sinfo->tx_packets = vif->target_stats.tx_pkt;
1810                 sinfo->filled |= STATION_INFO_TX_PACKETS;
1811         }
1812
1813         sinfo->signal = vif->target_stats.cs_rssi;
1814         sinfo->filled |= STATION_INFO_SIGNAL;
1815
1816         rate = vif->target_stats.tx_ucast_rate;
1817
1818         if (is_rate_legacy(rate)) {
1819                 sinfo->txrate.legacy = rate / 100;
1820         } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1821                 if (sgi) {
1822                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1823                         sinfo->txrate.mcs = mcs - 1;
1824                 } else {
1825                         sinfo->txrate.mcs = mcs;
1826                 }
1827
1828                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1829         } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1830                 if (sgi) {
1831                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1832                         sinfo->txrate.mcs = mcs - 1;
1833                 } else {
1834                         sinfo->txrate.mcs = mcs;
1835                 }
1836
1837                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
1838                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1839         } else {
1840                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1841                            "invalid rate from stats: %d\n", rate);
1842                 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1843                 return 0;
1844         }
1845
1846         sinfo->filled |= STATION_INFO_TX_BITRATE;
1847
1848         if (test_bit(CONNECTED, &vif->flags) &&
1849             test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1850             vif->nw_type == INFRA_NETWORK) {
1851                 sinfo->filled |= STATION_INFO_BSS_PARAM;
1852                 sinfo->bss_param.flags = 0;
1853                 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1854                 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1855         }
1856
1857         return 0;
1858 }
1859
1860 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1861                             struct cfg80211_pmksa *pmksa)
1862 {
1863         struct ath6kl *ar = ath6kl_priv(netdev);
1864         struct ath6kl_vif *vif = netdev_priv(netdev);
1865
1866         return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1867                                        pmksa->pmkid, true);
1868 }
1869
1870 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1871                             struct cfg80211_pmksa *pmksa)
1872 {
1873         struct ath6kl *ar = ath6kl_priv(netdev);
1874         struct ath6kl_vif *vif = netdev_priv(netdev);
1875
1876         return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1877                                        pmksa->pmkid, false);
1878 }
1879
1880 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1881 {
1882         struct ath6kl *ar = ath6kl_priv(netdev);
1883         struct ath6kl_vif *vif = netdev_priv(netdev);
1884
1885         if (test_bit(CONNECTED, &vif->flags))
1886                 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1887                                                vif->bssid, NULL, false);
1888         return 0;
1889 }
1890
1891 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1892                           struct cfg80211_wowlan *wow, u32 *filter)
1893 {
1894         int ret, pos;
1895         u8 mask[WOW_PATTERN_SIZE];
1896         u16 i;
1897
1898         /* Configure the patterns that we received from the user. */
1899         for (i = 0; i < wow->n_patterns; i++) {
1900
1901                 /*
1902                  * Convert given nl80211 specific mask value to equivalent
1903                  * driver specific mask value and send it to the chip along
1904                  * with patterns. For example, If the mask value defined in
1905                  * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1906                  * then equivalent driver specific mask value is
1907                  * "0xFF 0x00 0xFF 0x00".
1908                  */
1909                 memset(&mask, 0, sizeof(mask));
1910                 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1911                         if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1912                                 mask[pos] = 0xFF;
1913                 }
1914                 /*
1915                  * Note: Pattern's offset is not passed as part of wowlan
1916                  * parameter from CFG layer. So it's always passed as ZERO
1917                  * to the firmware. It means, given WOW patterns are always
1918                  * matched from the first byte of received pkt in the firmware.
1919                  */
1920                 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1921                                 vif->fw_vif_idx, WOW_LIST_ID,
1922                                 wow->patterns[i].pattern_len,
1923                                 0 /* pattern offset */,
1924                                 wow->patterns[i].pattern, mask);
1925                 if (ret)
1926                         return ret;
1927         }
1928
1929         if (wow->disconnect)
1930                 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1931
1932         if (wow->magic_pkt)
1933                 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1934
1935         if (wow->gtk_rekey_failure)
1936                 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1937
1938         if (wow->eap_identity_req)
1939                 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1940
1941         if (wow->four_way_handshake)
1942                 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1943
1944         return 0;
1945 }
1946
1947 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1948 {
1949         static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1950                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1951                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1952                 0x00, 0x08 };
1953         static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1954                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1955                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1956                 0x00, 0x7f };
1957         u8 unicst_offset = 0;
1958         static const u8 arp_pattern[] = { 0x08, 0x06 };
1959         static const u8 arp_mask[] = { 0xff, 0xff };
1960         u8 arp_offset = 20;
1961         static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1962         static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1963         u8 discvr_offset = 38;
1964         static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1965                 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1966                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1967                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1968                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1969                 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1970         static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1971                 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1972                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1973                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1974                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1975                 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1976         u8 dhcp_offset = 0;
1977         int ret;
1978
1979         /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1980         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1981                         vif->fw_vif_idx, WOW_LIST_ID,
1982                         sizeof(unicst_pattern), unicst_offset,
1983                         unicst_pattern, unicst_mask);
1984         if (ret) {
1985                 ath6kl_err("failed to add WOW unicast IP pattern\n");
1986                 return ret;
1987         }
1988
1989         /* Setup all ARP pkt pattern */
1990         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1991                         vif->fw_vif_idx, WOW_LIST_ID,
1992                         sizeof(arp_pattern), arp_offset,
1993                         arp_pattern, arp_mask);
1994         if (ret) {
1995                 ath6kl_err("failed to add WOW ARP pattern\n");
1996                 return ret;
1997         }
1998
1999         /*
2000          * Setup multicast pattern for mDNS 224.0.0.251,
2001          * SSDP 239.255.255.250 and LLMNR  224.0.0.252
2002          */
2003         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2004                         vif->fw_vif_idx, WOW_LIST_ID,
2005                         sizeof(discvr_pattern), discvr_offset,
2006                         discvr_pattern, discvr_mask);
2007         if (ret) {
2008                 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2009                 return ret;
2010         }
2011
2012         /* Setup all DHCP broadcast pkt pattern */
2013         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2014                         vif->fw_vif_idx, WOW_LIST_ID,
2015                         sizeof(dhcp_pattern), dhcp_offset,
2016                         dhcp_pattern, dhcp_mask);
2017         if (ret) {
2018                 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2019                 return ret;
2020         }
2021
2022         return 0;
2023 }
2024
2025 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2026 {
2027         struct net_device *ndev = vif->ndev;
2028         static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2029         static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2030         u8 discvr_offset = 38;
2031         u8 mac_mask[ETH_ALEN];
2032         int ret;
2033
2034         /* Setup unicast pkt pattern */
2035         memset(mac_mask, 0xff, ETH_ALEN);
2036         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2037                                 vif->fw_vif_idx, WOW_LIST_ID,
2038                                 ETH_ALEN, 0, ndev->dev_addr,
2039                                 mac_mask);
2040         if (ret) {
2041                 ath6kl_err("failed to add WOW unicast pattern\n");
2042                 return ret;
2043         }
2044
2045         /*
2046          * Setup multicast pattern for mDNS 224.0.0.251,
2047          * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2048          */
2049         if ((ndev->flags & IFF_ALLMULTI) ||
2050             (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2051                 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2052                                 vif->fw_vif_idx, WOW_LIST_ID,
2053                                 sizeof(discvr_pattern), discvr_offset,
2054                                 discvr_pattern, discvr_mask);
2055                 if (ret) {
2056                         ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2057                         return ret;
2058                 }
2059         }
2060
2061         return 0;
2062 }
2063
2064 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2065 {
2066         return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2067 }
2068
2069 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2070 {
2071         return !ar->tx_pending[ar->ctrl_ep];
2072 }
2073
2074 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2075 {
2076         int ret, left;
2077
2078         clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2079
2080         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2081                                                  ATH6KL_HOST_MODE_ASLEEP);
2082         if (ret)
2083                 return ret;
2084
2085         left = wait_event_interruptible_timeout(ar->event_wq,
2086                                                 is_hsleep_mode_procsed(vif),
2087                                                 WMI_TIMEOUT);
2088         if (left == 0) {
2089                 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2090                 ret = -ETIMEDOUT;
2091         } else if (left < 0) {
2092                 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2093                             left);
2094                 ret = left;
2095         }
2096
2097         if (ar->tx_pending[ar->ctrl_ep]) {
2098                 left = wait_event_interruptible_timeout(ar->event_wq,
2099                                                         is_ctrl_ep_empty(ar),
2100                                                         WMI_TIMEOUT);
2101                 if (left == 0) {
2102                         ath6kl_warn("clear wmi ctrl data timeout\n");
2103                         ret = -ETIMEDOUT;
2104                 } else if (left < 0) {
2105                         ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2106                         ret = left;
2107                 }
2108         }
2109
2110         return ret;
2111 }
2112
2113 static int ath6kl_wow_suspend_vif(struct ath6kl_vif *vif,
2114                                   struct cfg80211_wowlan *wow, u32 *filter)
2115 {
2116         struct ath6kl *ar = vif->ar;
2117         struct in_device *in_dev;
2118         struct in_ifaddr *ifa;
2119         int ret;
2120         u16 i, bmiss_time;
2121         __be32 ips[MAX_IP_ADDRS];
2122         u8 index = 0;
2123
2124         if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2125             test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2126                      ar->fw_capabilities)) {
2127                 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2128                                                 vif->fw_vif_idx, false);
2129                 if (ret)
2130                         return ret;
2131         }
2132
2133         /* Clear existing WOW patterns */
2134         for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2135                 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2136                                                WOW_LIST_ID, i);
2137
2138         /*
2139          * Skip the default WOW pattern configuration
2140          * if the driver receives any WOW patterns from
2141          * the user.
2142          */
2143         if (wow)
2144                 ret = ath6kl_wow_usr(ar, vif, wow, filter);
2145         else if (vif->nw_type == AP_NETWORK)
2146                 ret = ath6kl_wow_ap(ar, vif);
2147         else
2148                 ret = ath6kl_wow_sta(ar, vif);
2149
2150         if (ret)
2151                 return ret;
2152
2153         netif_stop_queue(vif->ndev);
2154
2155         if (vif->nw_type != AP_NETWORK) {
2156                 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2157                                                     ATH6KL_MAX_WOW_LISTEN_INTL,
2158                                                     0);
2159                 if (ret)
2160                         return ret;
2161
2162                 /* Set listen interval x 15 times as bmiss time */
2163                 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2164                 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2165                         bmiss_time = ATH6KL_MAX_BMISS_TIME;
2166
2167                 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2168                                                bmiss_time, 0);
2169                 if (ret)
2170                         return ret;
2171
2172                 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2173                                                 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2174                                                 0, 0, 0, 0);
2175                 if (ret)
2176                         return ret;
2177         }
2178
2179         /* Setup own IP addr for ARP agent. */
2180         in_dev = __in_dev_get_rtnl(vif->ndev);
2181         if (!in_dev)
2182                 return 0;
2183
2184         ifa = in_dev->ifa_list;
2185         memset(&ips, 0, sizeof(ips));
2186
2187         /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2188         while (index < MAX_IP_ADDRS && ifa) {
2189                 ips[index] = ifa->ifa_local;
2190                 ifa = ifa->ifa_next;
2191                 index++;
2192         }
2193
2194         if (ifa) {
2195                 ath6kl_err("total IP addr count is exceeding fw limit\n");
2196                 return -EINVAL;
2197         }
2198
2199         ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2200         if (ret) {
2201                 ath6kl_err("fail to setup ip for arp agent\n");
2202                 return ret;
2203         }
2204
2205         return ret;
2206 }
2207
2208 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2209 {
2210         struct ath6kl_vif *first_vif, *vif;
2211         int ret = 0;
2212         u32 filter = 0;
2213         bool connected = false;
2214
2215         /* enter / leave wow suspend on first vif always */
2216         first_vif = ath6kl_vif_first(ar);
2217         if (WARN_ON(unlikely(!first_vif)) ||
2218             !ath6kl_cfg80211_ready(first_vif))
2219                 return -EIO;
2220
2221         if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2222                 return -EINVAL;
2223
2224         /* install filters for each connected vif */
2225         spin_lock_bh(&ar->list_lock);
2226         list_for_each_entry(vif, &ar->vif_list, list) {
2227                 if (!test_bit(CONNECTED, &vif->flags) ||
2228                     !ath6kl_cfg80211_ready(vif))
2229                         continue;
2230                 connected = true;
2231
2232                 ret = ath6kl_wow_suspend_vif(vif, wow, &filter);
2233                 if (ret)
2234                         break;
2235         }
2236         spin_unlock_bh(&ar->list_lock);
2237
2238         if (!connected)
2239                 return -ENOTCONN;
2240         else if (ret)
2241                 return ret;
2242
2243         ar->state = ATH6KL_STATE_SUSPENDING;
2244
2245         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, first_vif->fw_vif_idx,
2246                                           ATH6KL_WOW_MODE_ENABLE,
2247                                           filter,
2248                                           WOW_HOST_REQ_DELAY);
2249         if (ret)
2250                 return ret;
2251
2252         return ath6kl_cfg80211_host_sleep(ar, first_vif);
2253 }
2254
2255 static int ath6kl_wow_resume_vif(struct ath6kl_vif *vif)
2256 {
2257         struct ath6kl *ar = vif->ar;
2258         int ret;
2259
2260         if (vif->nw_type != AP_NETWORK) {
2261                 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2262                                                 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2263                 if (ret)
2264                         return ret;
2265
2266                 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2267                                                     vif->listen_intvl_t, 0);
2268                 if (ret)
2269                         return ret;
2270
2271                 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2272                                                vif->bmiss_time_t, 0);
2273                 if (ret)
2274                         return ret;
2275         }
2276
2277         if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2278             test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2279                      ar->fw_capabilities)) {
2280                 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2281                                                   vif->fw_vif_idx, true);
2282                 if (ret)
2283                         return ret;
2284         }
2285
2286         netif_wake_queue(vif->ndev);
2287
2288         return 0;
2289 }
2290
2291 static int ath6kl_wow_resume(struct ath6kl *ar)
2292 {
2293         struct ath6kl_vif *vif;
2294         int ret;
2295
2296         vif = ath6kl_vif_first(ar);
2297         if (WARN_ON(unlikely(!vif)) ||
2298             !ath6kl_cfg80211_ready(vif))
2299                 return -EIO;
2300
2301         ar->state = ATH6KL_STATE_RESUMING;
2302
2303         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2304                                                  ATH6KL_HOST_MODE_AWAKE);
2305         if (ret) {
2306                 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2307                             ret);
2308                 goto cleanup;
2309         }
2310
2311         spin_lock_bh(&ar->list_lock);
2312         list_for_each_entry(vif, &ar->vif_list, list) {
2313                 if (!test_bit(CONNECTED, &vif->flags) ||
2314                     !ath6kl_cfg80211_ready(vif))
2315                         continue;
2316                 ret = ath6kl_wow_resume_vif(vif);
2317                 if (ret)
2318                         break;
2319         }
2320         spin_unlock_bh(&ar->list_lock);
2321
2322         if (ret)
2323                 goto cleanup;
2324
2325         ar->state = ATH6KL_STATE_ON;
2326         return 0;
2327
2328 cleanup:
2329         ar->state = ATH6KL_STATE_WOW;
2330         return ret;
2331 }
2332
2333 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2334 {
2335         struct ath6kl_vif *vif;
2336         int ret;
2337
2338         vif = ath6kl_vif_first(ar);
2339         if (!vif)
2340                 return -EIO;
2341
2342         if (!test_bit(WMI_READY, &ar->flag)) {
2343                 ath6kl_err("deepsleep failed as wmi is not ready\n");
2344                 return -EIO;
2345         }
2346
2347         ath6kl_cfg80211_stop_all(ar);
2348
2349         /* Save the current power mode before enabling power save */
2350         ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2351
2352         ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2353         if (ret)
2354                 return ret;
2355
2356         /* Disable WOW mode */
2357         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2358                                           ATH6KL_WOW_MODE_DISABLE,
2359                                           0, 0);
2360         if (ret)
2361                 return ret;
2362
2363         /* Flush all non control pkts in TX path */
2364         ath6kl_tx_data_cleanup(ar);
2365
2366         ret = ath6kl_cfg80211_host_sleep(ar, vif);
2367         if (ret)
2368                 return ret;
2369
2370         return 0;
2371 }
2372
2373 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2374 {
2375         struct ath6kl_vif *vif;
2376         int ret;
2377
2378         vif = ath6kl_vif_first(ar);
2379
2380         if (!vif)
2381                 return -EIO;
2382
2383         if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2384                 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2385                                                ar->wmi->saved_pwr_mode);
2386                 if (ret)
2387                         return ret;
2388         }
2389
2390         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2391                                                  ATH6KL_HOST_MODE_AWAKE);
2392         if (ret)
2393                 return ret;
2394
2395         ar->state = ATH6KL_STATE_ON;
2396
2397         /* Reset scan parameter to default values */
2398         ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2399                                         0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2400         if (ret)
2401                 return ret;
2402
2403         return 0;
2404 }
2405
2406 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2407                             enum ath6kl_cfg_suspend_mode mode,
2408                             struct cfg80211_wowlan *wow)
2409 {
2410         struct ath6kl_vif *vif;
2411         enum ath6kl_state prev_state;
2412         int ret;
2413
2414         switch (mode) {
2415         case ATH6KL_CFG_SUSPEND_WOW:
2416
2417                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2418
2419                 /* Flush all non control pkts in TX path */
2420                 ath6kl_tx_data_cleanup(ar);
2421
2422                 prev_state = ar->state;
2423
2424                 ret = ath6kl_wow_suspend(ar, wow);
2425                 if (ret) {
2426                         ar->state = prev_state;
2427                         return ret;
2428                 }
2429
2430                 ar->state = ATH6KL_STATE_WOW;
2431                 break;
2432
2433         case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2434
2435                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2436
2437                 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2438                 if (ret) {
2439                         ath6kl_err("deepsleep suspend failed: %d\n", ret);
2440                         return ret;
2441                 }
2442
2443                 ar->state = ATH6KL_STATE_DEEPSLEEP;
2444
2445                 break;
2446
2447         case ATH6KL_CFG_SUSPEND_CUTPOWER:
2448
2449                 ath6kl_cfg80211_stop_all(ar);
2450
2451                 if (ar->state == ATH6KL_STATE_OFF) {
2452                         ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2453                                    "suspend hw off, no action for cutpower\n");
2454                         break;
2455                 }
2456
2457                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2458
2459                 ret = ath6kl_init_hw_stop(ar);
2460                 if (ret) {
2461                         ath6kl_warn("failed to stop hw during suspend: %d\n",
2462                                     ret);
2463                 }
2464
2465                 ar->state = ATH6KL_STATE_CUTPOWER;
2466
2467                 break;
2468
2469         default:
2470                 break;
2471         }
2472
2473         list_for_each_entry(vif, &ar->vif_list, list)
2474                 ath6kl_cfg80211_scan_complete_event(vif, true);
2475
2476         return 0;
2477 }
2478 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2479
2480 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2481 {
2482         int ret;
2483
2484         switch (ar->state) {
2485         case  ATH6KL_STATE_WOW:
2486                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2487
2488                 ret = ath6kl_wow_resume(ar);
2489                 if (ret) {
2490                         ath6kl_warn("wow mode resume failed: %d\n", ret);
2491                         return ret;
2492                 }
2493
2494                 break;
2495
2496         case ATH6KL_STATE_DEEPSLEEP:
2497                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2498
2499                 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2500                 if (ret) {
2501                         ath6kl_warn("deep sleep resume failed: %d\n", ret);
2502                         return ret;
2503                 }
2504                 break;
2505
2506         case ATH6KL_STATE_CUTPOWER:
2507                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2508
2509                 ret = ath6kl_init_hw_start(ar);
2510                 if (ret) {
2511                         ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2512                         return ret;
2513                 }
2514                 break;
2515
2516         default:
2517                 break;
2518         }
2519
2520         return 0;
2521 }
2522 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2523
2524 #ifdef CONFIG_PM
2525
2526 /* hif layer decides what suspend mode to use */
2527 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2528                                  struct cfg80211_wowlan *wow)
2529 {
2530         struct ath6kl *ar = wiphy_priv(wiphy);
2531
2532         ath6kl_recovery_suspend(ar);
2533
2534         return ath6kl_hif_suspend(ar, wow);
2535 }
2536
2537 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2538 {
2539         struct ath6kl *ar = wiphy_priv(wiphy);
2540         int err;
2541
2542         err = ath6kl_hif_resume(ar);
2543         if (err)
2544                 return err;
2545
2546         ath6kl_recovery_resume(ar);
2547
2548         return 0;
2549 }
2550
2551 /*
2552  * FIXME: WOW suspend mode is selected if the host sdio controller supports
2553  * both sdio irq wake up and keep power. The target pulls sdio data line to
2554  * wake up the host when WOW pattern matches. This causes sdio irq handler
2555  * is being called in the host side which internally hits ath6kl's RX path.
2556  *
2557  * Since sdio interrupt is not disabled, RX path executes even before
2558  * the host executes the actual resume operation from PM module.
2559  *
2560  * In the current scenario, WOW resume should happen before start processing
2561  * any data from the target. So It's required to perform WOW resume in RX path.
2562  * Ideally we should perform WOW resume only in the actual platform
2563  * resume path. This area needs bit rework to avoid WOW resume in RX path.
2564  *
2565  * ath6kl_check_wow_status() is called from ath6kl_rx().
2566  */
2567 void ath6kl_check_wow_status(struct ath6kl *ar)
2568 {
2569         if (ar->state == ATH6KL_STATE_SUSPENDING)
2570                 return;
2571
2572         if (ar->state == ATH6KL_STATE_WOW)
2573                 ath6kl_cfg80211_resume(ar);
2574 }
2575
2576 #else
2577
2578 void ath6kl_check_wow_status(struct ath6kl *ar)
2579 {
2580 }
2581 #endif
2582
2583 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum ieee80211_band band,
2584                             bool ht_enable)
2585 {
2586         struct ath6kl_htcap *htcap = &vif->htcap[band];
2587
2588         if (htcap->ht_enable == ht_enable)
2589                 return 0;
2590
2591         if (ht_enable) {
2592                 /* Set default ht capabilities */
2593                 htcap->ht_enable = true;
2594                 htcap->cap_info = (band == IEEE80211_BAND_2GHZ) ?
2595                                    ath6kl_g_htcap : ath6kl_a_htcap;
2596                 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2597         } else /* Disable ht */
2598                 memset(htcap, 0, sizeof(*htcap));
2599
2600         return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2601                                         band, htcap);
2602 }
2603
2604 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2605 {
2606         struct wiphy *wiphy = vif->ar->wiphy;
2607         int band, ret = 0;
2608
2609         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2610                 if (!wiphy->bands[band])
2611                         continue;
2612
2613                 ret = ath6kl_set_htcap(vif, band,
2614                                 wiphy->bands[band]->ht_cap.ht_supported);
2615                 if (ret)
2616                         return ret;
2617         }
2618
2619         return ret;
2620 }
2621
2622 static bool ath6kl_is_p2p_ie(const u8 *pos)
2623 {
2624         return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2625                 pos[2] == 0x50 && pos[3] == 0x6f &&
2626                 pos[4] == 0x9a && pos[5] == 0x09;
2627 }
2628
2629 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2630                                         const u8 *ies, size_t ies_len)
2631 {
2632         struct ath6kl *ar = vif->ar;
2633         const u8 *pos;
2634         u8 *buf = NULL;
2635         size_t len = 0;
2636         int ret;
2637
2638         /*
2639          * Filter out P2P IE(s) since they will be included depending on
2640          * the Probe Request frame in ath6kl_send_go_probe_resp().
2641          */
2642
2643         if (ies && ies_len) {
2644                 buf = kmalloc(ies_len, GFP_KERNEL);
2645                 if (buf == NULL)
2646                         return -ENOMEM;
2647                 pos = ies;
2648                 while (pos + 1 < ies + ies_len) {
2649                         if (pos + 2 + pos[1] > ies + ies_len)
2650                                 break;
2651                         if (!ath6kl_is_p2p_ie(pos)) {
2652                                 memcpy(buf + len, pos, 2 + pos[1]);
2653                                 len += 2 + pos[1];
2654                         }
2655                         pos += 2 + pos[1];
2656                 }
2657         }
2658
2659         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2660                                        WMI_FRAME_PROBE_RESP, buf, len);
2661         kfree(buf);
2662         return ret;
2663 }
2664
2665 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2666                           struct cfg80211_beacon_data *info)
2667 {
2668         struct ath6kl *ar = vif->ar;
2669         int res;
2670
2671         /* this also clears IE in fw if it's not set */
2672         res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2673                                        WMI_FRAME_BEACON,
2674                                        info->beacon_ies,
2675                                        info->beacon_ies_len);
2676         if (res)
2677                 return res;
2678
2679         /* this also clears IE in fw if it's not set */
2680         res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2681                                            info->proberesp_ies_len);
2682         if (res)
2683                 return res;
2684
2685         /* this also clears IE in fw if it's not set */
2686         res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2687                                        WMI_FRAME_ASSOC_RESP,
2688                                        info->assocresp_ies,
2689                                        info->assocresp_ies_len);
2690         if (res)
2691                 return res;
2692
2693         return 0;
2694 }
2695
2696 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2697                                 u8 *rsn_capab)
2698 {
2699         const u8 *rsn_ie;
2700         size_t rsn_ie_len;
2701         u16 cnt;
2702
2703         if (!beacon->tail)
2704                 return -EINVAL;
2705
2706         rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2707         if (!rsn_ie)
2708                 return -EINVAL;
2709
2710         rsn_ie_len = *(rsn_ie + 1);
2711         /* skip element id and length */
2712         rsn_ie += 2;
2713
2714         /* skip version */
2715         if (rsn_ie_len < 2)
2716                 return -EINVAL;
2717         rsn_ie +=  2;
2718         rsn_ie_len -= 2;
2719
2720         /* skip group cipher suite */
2721         if (rsn_ie_len < 4)
2722                 return 0;
2723         rsn_ie +=  4;
2724         rsn_ie_len -= 4;
2725
2726         /* skip pairwise cipher suite */
2727         if (rsn_ie_len < 2)
2728                 return 0;
2729         cnt = get_unaligned_le16(rsn_ie);
2730         rsn_ie += (2 + cnt * 4);
2731         rsn_ie_len -= (2 + cnt * 4);
2732
2733         /* skip akm suite */
2734         if (rsn_ie_len < 2)
2735                 return 0;
2736         cnt = get_unaligned_le16(rsn_ie);
2737         rsn_ie += (2 + cnt * 4);
2738         rsn_ie_len -= (2 + cnt * 4);
2739
2740         if (rsn_ie_len < 2)
2741                 return 0;
2742
2743         memcpy(rsn_capab, rsn_ie, 2);
2744
2745         return 0;
2746 }
2747
2748 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2749                            struct cfg80211_ap_settings *info)
2750 {
2751         struct ath6kl *ar = ath6kl_priv(dev);
2752         struct ath6kl_vif *vif = netdev_priv(dev);
2753         struct ieee80211_mgmt *mgmt;
2754         bool hidden = false;
2755         u8 *ies;
2756         int ies_len;
2757         struct wmi_connect_cmd p;
2758         int res;
2759         int i, ret;
2760         u16 rsn_capab = 0;
2761         int inactivity_timeout = 0;
2762
2763         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2764
2765         if (!ath6kl_cfg80211_ready(vif))
2766                 return -EIO;
2767
2768         if (vif->next_mode != AP_NETWORK)
2769                 return -EOPNOTSUPP;
2770
2771         res = ath6kl_set_ies(vif, &info->beacon);
2772
2773         ar->ap_mode_bkey.valid = false;
2774
2775         ret = ath6kl_wmi_ap_set_beacon_intvl_cmd(ar->wmi, vif->fw_vif_idx,
2776                                                  info->beacon_interval);
2777
2778         if (ret)
2779                 ath6kl_warn("Failed to set beacon interval: %d\n", ret);
2780
2781         ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2782                                          info->dtim_period);
2783
2784         /* ignore error, just print a warning and continue normally */
2785         if (ret)
2786                 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2787
2788         if (info->beacon.head == NULL)
2789                 return -EINVAL;
2790         mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2791         ies = mgmt->u.beacon.variable;
2792         if (ies > info->beacon.head + info->beacon.head_len)
2793                 return -EINVAL;
2794         ies_len = info->beacon.head + info->beacon.head_len - ies;
2795
2796         if (info->ssid == NULL)
2797                 return -EINVAL;
2798         memcpy(vif->ssid, info->ssid, info->ssid_len);
2799         vif->ssid_len = info->ssid_len;
2800         if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2801                 hidden = true;
2802
2803         res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2804         if (res)
2805                 return res;
2806
2807         ret = ath6kl_set_auth_type(vif, info->auth_type);
2808         if (ret)
2809                 return ret;
2810
2811         memset(&p, 0, sizeof(p));
2812
2813         for (i = 0; i < info->crypto.n_akm_suites; i++) {
2814                 switch (info->crypto.akm_suites[i]) {
2815                 case WLAN_AKM_SUITE_8021X:
2816                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2817                                 p.auth_mode |= WPA_AUTH;
2818                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2819                                 p.auth_mode |= WPA2_AUTH;
2820                         break;
2821                 case WLAN_AKM_SUITE_PSK:
2822                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2823                                 p.auth_mode |= WPA_PSK_AUTH;
2824                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2825                                 p.auth_mode |= WPA2_PSK_AUTH;
2826                         break;
2827                 }
2828         }
2829         if (p.auth_mode == 0)
2830                 p.auth_mode = NONE_AUTH;
2831         vif->auth_mode = p.auth_mode;
2832
2833         for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2834                 switch (info->crypto.ciphers_pairwise[i]) {
2835                 case WLAN_CIPHER_SUITE_WEP40:
2836                 case WLAN_CIPHER_SUITE_WEP104:
2837                         p.prwise_crypto_type |= WEP_CRYPT;
2838                         break;
2839                 case WLAN_CIPHER_SUITE_TKIP:
2840                         p.prwise_crypto_type |= TKIP_CRYPT;
2841                         break;
2842                 case WLAN_CIPHER_SUITE_CCMP:
2843                         p.prwise_crypto_type |= AES_CRYPT;
2844                         break;
2845                 case WLAN_CIPHER_SUITE_SMS4:
2846                         p.prwise_crypto_type |= WAPI_CRYPT;
2847                         break;
2848                 }
2849         }
2850         if (p.prwise_crypto_type == 0) {
2851                 p.prwise_crypto_type = NONE_CRYPT;
2852                 ath6kl_set_cipher(vif, 0, true);
2853         } else if (info->crypto.n_ciphers_pairwise == 1)
2854                 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2855
2856         switch (info->crypto.cipher_group) {
2857         case WLAN_CIPHER_SUITE_WEP40:
2858         case WLAN_CIPHER_SUITE_WEP104:
2859                 p.grp_crypto_type = WEP_CRYPT;
2860                 break;
2861         case WLAN_CIPHER_SUITE_TKIP:
2862                 p.grp_crypto_type = TKIP_CRYPT;
2863                 break;
2864         case WLAN_CIPHER_SUITE_CCMP:
2865                 p.grp_crypto_type = AES_CRYPT;
2866                 break;
2867         case WLAN_CIPHER_SUITE_SMS4:
2868                 p.grp_crypto_type = WAPI_CRYPT;
2869                 break;
2870         default:
2871                 p.grp_crypto_type = NONE_CRYPT;
2872                 break;
2873         }
2874         ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2875
2876         p.nw_type = AP_NETWORK;
2877         vif->nw_type = vif->next_mode;
2878
2879         p.ssid_len = vif->ssid_len;
2880         memcpy(p.ssid, vif->ssid, vif->ssid_len);
2881         p.dot11_auth_mode = vif->dot11_auth_mode;
2882         p.ch = cpu_to_le16(info->chandef.chan->center_freq);
2883
2884         /* Enable uAPSD support by default */
2885         res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2886         if (res < 0)
2887                 return res;
2888
2889         if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2890                 p.nw_subtype = SUBTYPE_P2PGO;
2891         } else {
2892                 /*
2893                  * Due to firmware limitation, it is not possible to
2894                  * do P2P mgmt operations in AP mode
2895                  */
2896                 p.nw_subtype = SUBTYPE_NONE;
2897         }
2898
2899         if (info->inactivity_timeout) {
2900
2901                 inactivity_timeout = info->inactivity_timeout;
2902
2903                 if (ar->hw.flags & ATH6KL_HW_AP_INACTIVITY_MINS)
2904                         inactivity_timeout = DIV_ROUND_UP(inactivity_timeout,
2905                                                           60);
2906
2907                 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2908                                                   inactivity_timeout);
2909                 if (res < 0)
2910                         return res;
2911         }
2912
2913         if (ath6kl_set_htcap(vif, info->chandef.chan->band,
2914                              cfg80211_get_chandef_type(&info->chandef)
2915                                         != NL80211_CHAN_NO_HT))
2916                 return -EIO;
2917
2918         /*
2919          * Get the PTKSA replay counter in the RSN IE. Supplicant
2920          * will use the RSN IE in M3 message and firmware has to
2921          * advertise the same in beacon/probe response. Send
2922          * the complete RSN IE capability field to firmware
2923          */
2924         if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2925             test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2926                      ar->fw_capabilities)) {
2927                 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2928                                             WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2929                                             (const u8 *) &rsn_capab,
2930                                             sizeof(rsn_capab));
2931                 vif->rsn_capab = rsn_capab;
2932                 if (res < 0)
2933                         return res;
2934         }
2935
2936         memcpy(&vif->profile, &p, sizeof(p));
2937         res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2938         if (res < 0)
2939                 return res;
2940
2941         return 0;
2942 }
2943
2944 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2945                                 struct cfg80211_beacon_data *beacon)
2946 {
2947         struct ath6kl_vif *vif = netdev_priv(dev);
2948
2949         if (!ath6kl_cfg80211_ready(vif))
2950                 return -EIO;
2951
2952         if (vif->next_mode != AP_NETWORK)
2953                 return -EOPNOTSUPP;
2954
2955         return ath6kl_set_ies(vif, beacon);
2956 }
2957
2958 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2959 {
2960         struct ath6kl *ar = ath6kl_priv(dev);
2961         struct ath6kl_vif *vif = netdev_priv(dev);
2962
2963         if (vif->nw_type != AP_NETWORK)
2964                 return -EOPNOTSUPP;
2965         if (!test_bit(CONNECTED, &vif->flags))
2966                 return -ENOTCONN;
2967
2968         ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2969         clear_bit(CONNECTED, &vif->flags);
2970
2971         /* Restore ht setting in firmware */
2972         return ath6kl_restore_htcap(vif);
2973 }
2974
2975 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2976
2977 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2978                               u8 *mac)
2979 {
2980         struct ath6kl *ar = ath6kl_priv(dev);
2981         struct ath6kl_vif *vif = netdev_priv(dev);
2982         const u8 *addr = mac ? mac : bcast_addr;
2983
2984         return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2985                                       addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2986 }
2987
2988 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
2989                                  u8 *mac, struct station_parameters *params)
2990 {
2991         struct ath6kl *ar = ath6kl_priv(dev);
2992         struct ath6kl_vif *vif = netdev_priv(dev);
2993         int err;
2994
2995         if (vif->nw_type != AP_NETWORK)
2996                 return -EOPNOTSUPP;
2997
2998         err = cfg80211_check_station_change(wiphy, params,
2999                                             CFG80211_STA_AP_MLME_CLIENT);
3000         if (err)
3001                 return err;
3002
3003         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
3004                 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3005                                               WMI_AP_MLME_AUTHORIZE, mac, 0);
3006         return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
3007                                       WMI_AP_MLME_UNAUTHORIZE, mac, 0);
3008 }
3009
3010 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
3011                                     struct wireless_dev *wdev,
3012                                     struct ieee80211_channel *chan,
3013                                     unsigned int duration,
3014                                     u64 *cookie)
3015 {
3016         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3017         struct ath6kl *ar = ath6kl_priv(vif->ndev);
3018         u32 id;
3019
3020         /* TODO: if already pending or ongoing remain-on-channel,
3021          * return -EBUSY */
3022         id = ++vif->last_roc_id;
3023         if (id == 0) {
3024                 /* Do not use 0 as the cookie value */
3025                 id = ++vif->last_roc_id;
3026         }
3027         *cookie = id;
3028
3029         return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
3030                                              chan->center_freq, duration);
3031 }
3032
3033 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3034                                            struct wireless_dev *wdev,
3035                                            u64 cookie)
3036 {
3037         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3038         struct ath6kl *ar = ath6kl_priv(vif->ndev);
3039
3040         if (cookie != vif->last_roc_id)
3041                 return -ENOENT;
3042         vif->last_cancel_roc_id = cookie;
3043
3044         return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3045 }
3046
3047 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3048                                      const u8 *buf, size_t len,
3049                                      unsigned int freq)
3050 {
3051         struct ath6kl *ar = vif->ar;
3052         const u8 *pos;
3053         u8 *p2p;
3054         int p2p_len;
3055         int ret;
3056         const struct ieee80211_mgmt *mgmt;
3057
3058         mgmt = (const struct ieee80211_mgmt *) buf;
3059
3060         /* Include P2P IE(s) from the frame generated in user space. */
3061
3062         p2p = kmalloc(len, GFP_KERNEL);
3063         if (p2p == NULL)
3064                 return -ENOMEM;
3065         p2p_len = 0;
3066
3067         pos = mgmt->u.probe_resp.variable;
3068         while (pos + 1 < buf + len) {
3069                 if (pos + 2 + pos[1] > buf + len)
3070                         break;
3071                 if (ath6kl_is_p2p_ie(pos)) {
3072                         memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3073                         p2p_len += 2 + pos[1];
3074                 }
3075                 pos += 2 + pos[1];
3076         }
3077
3078         ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
3079                                                  mgmt->da, p2p, p2p_len);
3080         kfree(p2p);
3081         return ret;
3082 }
3083
3084 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
3085                                      u32 id,
3086                                      u32 freq,
3087                                      u32 wait,
3088                                      const u8 *buf,
3089                                      size_t len,
3090                                      bool *more_data,
3091                                      bool no_cck)
3092 {
3093         struct ieee80211_mgmt *mgmt;
3094         struct ath6kl_sta *conn;
3095         bool is_psq_empty = false;
3096         struct ath6kl_mgmt_buff *mgmt_buf;
3097         size_t mgmt_buf_size;
3098         struct ath6kl *ar = vif->ar;
3099
3100         mgmt = (struct ieee80211_mgmt *) buf;
3101         if (is_multicast_ether_addr(mgmt->da))
3102                 return false;
3103
3104         conn = ath6kl_find_sta(vif, mgmt->da);
3105         if (!conn)
3106                 return false;
3107
3108         if (conn->sta_flags & STA_PS_SLEEP) {
3109                 if (!(conn->sta_flags & STA_PS_POLLED)) {
3110                         /* Queue the frames if the STA is sleeping */
3111                         mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3112                         mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3113                         if (!mgmt_buf)
3114                                 return false;
3115
3116                         INIT_LIST_HEAD(&mgmt_buf->list);
3117                         mgmt_buf->id = id;
3118                         mgmt_buf->freq = freq;
3119                         mgmt_buf->wait = wait;
3120                         mgmt_buf->len = len;
3121                         mgmt_buf->no_cck = no_cck;
3122                         memcpy(mgmt_buf->buf, buf, len);
3123                         spin_lock_bh(&conn->psq_lock);
3124                         is_psq_empty = skb_queue_empty(&conn->psq) &&
3125                                         (conn->mgmt_psq_len == 0);
3126                         list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3127                         conn->mgmt_psq_len++;
3128                         spin_unlock_bh(&conn->psq_lock);
3129
3130                         /*
3131                          * If this is the first pkt getting queued
3132                          * for this STA, update the PVB for this
3133                          * STA.
3134                          */
3135                         if (is_psq_empty)
3136                                 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3137                                                        conn->aid, 1);
3138                         return true;
3139                 }
3140
3141                 /*
3142                  * This tx is because of a PsPoll.
3143                  * Determine if MoreData bit has to be set.
3144                  */
3145                 spin_lock_bh(&conn->psq_lock);
3146                 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3147                         *more_data = true;
3148                 spin_unlock_bh(&conn->psq_lock);
3149         }
3150
3151         return false;
3152 }
3153
3154 /* Check if SSID length is greater than DIRECT- */
3155 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3156 {
3157         const struct ieee80211_mgmt *mgmt;
3158         mgmt = (const struct ieee80211_mgmt *) buf;
3159
3160         /* variable[1] contains the SSID tag length */
3161         if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3162             (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3163                 return true;
3164         }
3165
3166         return false;
3167 }
3168
3169 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3170                           struct cfg80211_mgmt_tx_params *params, u64 *cookie)
3171 {
3172         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3173         struct ath6kl *ar = ath6kl_priv(vif->ndev);
3174         struct ieee80211_channel *chan = params->chan;
3175         const u8 *buf = params->buf;
3176         size_t len = params->len;
3177         unsigned int wait = params->wait;
3178         bool no_cck = params->no_cck;
3179         u32 id, freq;
3180         const struct ieee80211_mgmt *mgmt;
3181         bool more_data, queued;
3182
3183         /* default to the current channel, but use the one specified as argument
3184          * if any
3185          */
3186         freq = vif->ch_hint;
3187         if (chan)
3188                 freq = chan->center_freq;
3189
3190         /* never send freq zero to the firmware */
3191         if (WARN_ON(freq == 0))
3192                 return -EINVAL;
3193
3194         mgmt = (const struct ieee80211_mgmt *) buf;
3195         if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3196             ieee80211_is_probe_resp(mgmt->frame_control) &&
3197             ath6kl_is_p2p_go_ssid(buf, len)) {
3198                 /*
3199                  * Send Probe Response frame in GO mode using a separate WMI
3200                  * command to allow the target to fill in the generic IEs.
3201                  */
3202                 *cookie = 0; /* TX status not supported */
3203                 return ath6kl_send_go_probe_resp(vif, buf, len, freq);
3204         }
3205
3206         id = vif->send_action_id++;
3207         if (id == 0) {
3208                 /*
3209                  * 0 is a reserved value in the WMI command and shall not be
3210                  * used for the command.
3211                  */
3212                 id = vif->send_action_id++;
3213         }
3214
3215         *cookie = id;
3216
3217         /* AP mode Power saving processing */
3218         if (vif->nw_type == AP_NETWORK) {
3219                 queued = ath6kl_mgmt_powersave_ap(vif, id, freq, wait, buf, len,
3220                                                   &more_data, no_cck);
3221                 if (queued)
3222                         return 0;
3223         }
3224
3225         return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id, freq,
3226                                         wait, buf, len, no_cck);
3227 }
3228
3229 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3230                                        struct wireless_dev *wdev,
3231                                        u16 frame_type, bool reg)
3232 {
3233         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3234
3235         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3236                    __func__, frame_type, reg);
3237         if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3238                 /*
3239                  * Note: This notification callback is not allowed to sleep, so
3240                  * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3241                  * hardcode target to report Probe Request frames all the time.
3242                  */
3243                 vif->probe_req_report = reg;
3244         }
3245 }
3246
3247 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3248                         struct net_device *dev,
3249                         struct cfg80211_sched_scan_request *request)
3250 {
3251         struct ath6kl *ar = ath6kl_priv(dev);
3252         struct ath6kl_vif *vif = netdev_priv(dev);
3253         u16 interval;
3254         int ret, rssi_thold;
3255         int n_match_sets = request->n_match_sets;
3256
3257         /*
3258          * If there's a matchset w/o an SSID, then assume it's just for
3259          * the RSSI (nothing else is currently supported) and ignore it.
3260          * The device only supports a global RSSI filter that we set below.
3261          */
3262         if (n_match_sets == 1 && !request->match_sets[0].ssid.ssid_len)
3263                 n_match_sets = 0;
3264
3265         if (ar->state != ATH6KL_STATE_ON)
3266                 return -EIO;
3267
3268         if (vif->sme_state != SME_DISCONNECTED)
3269                 return -EBUSY;
3270
3271         ath6kl_cfg80211_scan_complete_event(vif, true);
3272
3273         ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3274                                       request->n_ssids,
3275                                       request->match_sets,
3276                                       n_match_sets);
3277         if (ret < 0)
3278                 return ret;
3279
3280         if (!n_match_sets) {
3281                 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3282                                                ALL_BSS_FILTER, 0);
3283                 if (ret < 0)
3284                         return ret;
3285         } else {
3286                  ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3287                                                 MATCHED_SSID_FILTER, 0);
3288                 if (ret < 0)
3289                         return ret;
3290         }
3291
3292         if (test_bit(ATH6KL_FW_CAPABILITY_RSSI_SCAN_THOLD,
3293                      ar->fw_capabilities)) {
3294                 if (request->min_rssi_thold <= NL80211_SCAN_RSSI_THOLD_OFF)
3295                         rssi_thold = 0;
3296                 else if (request->min_rssi_thold < -127)
3297                         rssi_thold = -127;
3298                 else
3299                         rssi_thold = request->min_rssi_thold;
3300
3301                 ret = ath6kl_wmi_set_rssi_filter_cmd(ar->wmi, vif->fw_vif_idx,
3302                                                      rssi_thold);
3303                 if (ret) {
3304                         ath6kl_err("failed to set RSSI threshold for scan\n");
3305                         return ret;
3306                 }
3307         }
3308
3309         /* fw uses seconds, also make sure that it's >0 */
3310         interval = max_t(u16, 1, request->interval / 1000);
3311
3312         ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3313                                   interval, interval,
3314                                   vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3315
3316         /* this also clears IE in fw if it's not set */
3317         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3318                                        WMI_FRAME_PROBE_REQ,
3319                                        request->ie, request->ie_len);
3320         if (ret) {
3321                 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n",
3322                             ret);
3323                 return ret;
3324         }
3325
3326         ret = ath6kl_wmi_enable_sched_scan_cmd(ar->wmi, vif->fw_vif_idx, true);
3327         if (ret)
3328                 return ret;
3329
3330         set_bit(SCHED_SCANNING, &vif->flags);
3331
3332         return 0;
3333 }
3334
3335 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3336                                       struct net_device *dev)
3337 {
3338         struct ath6kl_vif *vif = netdev_priv(dev);
3339         bool stopped;
3340
3341         stopped = __ath6kl_cfg80211_sscan_stop(vif);
3342
3343         if (!stopped)
3344                 return -EIO;
3345
3346         return 0;
3347 }
3348
3349 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy,
3350                                        struct net_device *dev,
3351                                        const u8 *addr,
3352                                        const struct cfg80211_bitrate_mask *mask)
3353 {
3354         struct ath6kl *ar = ath6kl_priv(dev);
3355         struct ath6kl_vif *vif = netdev_priv(dev);
3356
3357         return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx,
3358                                            mask);
3359 }
3360
3361 static int ath6kl_cfg80211_set_txe_config(struct wiphy *wiphy,
3362                                           struct net_device *dev,
3363                                           u32 rate, u32 pkts, u32 intvl)
3364 {
3365         struct ath6kl *ar = ath6kl_priv(dev);
3366         struct ath6kl_vif *vif = netdev_priv(dev);
3367
3368         if (vif->nw_type != INFRA_NETWORK ||
3369             !test_bit(ATH6KL_FW_CAPABILITY_TX_ERR_NOTIFY, ar->fw_capabilities))
3370                 return -EOPNOTSUPP;
3371
3372         if (vif->sme_state != SME_CONNECTED)
3373                 return -ENOTCONN;
3374
3375         /* save this since the firmware won't report the interval */
3376         vif->txe_intvl = intvl;
3377
3378         return ath6kl_wmi_set_txe_notify(ar->wmi, vif->fw_vif_idx,
3379                                          rate, pkts, intvl);
3380 }
3381
3382 static const struct ieee80211_txrx_stypes
3383 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3384         [NL80211_IFTYPE_STATION] = {
3385                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3386                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3387                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3388                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3389         },
3390         [NL80211_IFTYPE_AP] = {
3391                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3392                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3393                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3394                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3395         },
3396         [NL80211_IFTYPE_P2P_CLIENT] = {
3397                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3398                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3399                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3400                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3401         },
3402         [NL80211_IFTYPE_P2P_GO] = {
3403                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3404                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3405                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3406                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3407         },
3408 };
3409
3410 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3411         .add_virtual_intf = ath6kl_cfg80211_add_iface,
3412         .del_virtual_intf = ath6kl_cfg80211_del_iface,
3413         .change_virtual_intf = ath6kl_cfg80211_change_iface,
3414         .scan = ath6kl_cfg80211_scan,
3415         .connect = ath6kl_cfg80211_connect,
3416         .disconnect = ath6kl_cfg80211_disconnect,
3417         .add_key = ath6kl_cfg80211_add_key,
3418         .get_key = ath6kl_cfg80211_get_key,
3419         .del_key = ath6kl_cfg80211_del_key,
3420         .set_default_key = ath6kl_cfg80211_set_default_key,
3421         .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3422         .set_tx_power = ath6kl_cfg80211_set_txpower,
3423         .get_tx_power = ath6kl_cfg80211_get_txpower,
3424         .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3425         .join_ibss = ath6kl_cfg80211_join_ibss,
3426         .leave_ibss = ath6kl_cfg80211_leave_ibss,
3427         .get_station = ath6kl_get_station,
3428         .set_pmksa = ath6kl_set_pmksa,
3429         .del_pmksa = ath6kl_del_pmksa,
3430         .flush_pmksa = ath6kl_flush_pmksa,
3431         CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3432 #ifdef CONFIG_PM
3433         .suspend = __ath6kl_cfg80211_suspend,
3434         .resume = __ath6kl_cfg80211_resume,
3435 #endif
3436         .start_ap = ath6kl_start_ap,
3437         .change_beacon = ath6kl_change_beacon,
3438         .stop_ap = ath6kl_stop_ap,
3439         .del_station = ath6kl_del_station,
3440         .change_station = ath6kl_change_station,
3441         .remain_on_channel = ath6kl_remain_on_channel,
3442         .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3443         .mgmt_tx = ath6kl_mgmt_tx,
3444         .mgmt_frame_register = ath6kl_mgmt_frame_register,
3445         .sched_scan_start = ath6kl_cfg80211_sscan_start,
3446         .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3447         .set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
3448         .set_cqm_txe_config = ath6kl_cfg80211_set_txe_config,
3449 };
3450
3451 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3452 {
3453         ath6kl_cfg80211_sscan_disable(vif);
3454
3455         switch (vif->sme_state) {
3456         case SME_DISCONNECTED:
3457                 break;
3458         case SME_CONNECTING:
3459                 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3460                                         NULL, 0,
3461                                         WLAN_STATUS_UNSPECIFIED_FAILURE,
3462                                         GFP_KERNEL);
3463                 break;
3464         case SME_CONNECTED:
3465                 cfg80211_disconnected(vif->ndev, 0, NULL, 0, GFP_KERNEL);
3466                 break;
3467         }
3468
3469         if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3470             (test_bit(CONNECTED, &vif->flags) ||
3471             test_bit(CONNECT_PEND, &vif->flags)))
3472                 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3473
3474         vif->sme_state = SME_DISCONNECTED;
3475         clear_bit(CONNECTED, &vif->flags);
3476         clear_bit(CONNECT_PEND, &vif->flags);
3477
3478         /* Stop netdev queues, needed during recovery */
3479         netif_stop_queue(vif->ndev);
3480         netif_carrier_off(vif->ndev);
3481
3482         /* disable scanning */
3483         if (vif->ar->state != ATH6KL_STATE_RECOVERY &&
3484             ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3485                                       0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3486                 ath6kl_warn("failed to disable scan during stop\n");
3487
3488         ath6kl_cfg80211_scan_complete_event(vif, true);
3489 }
3490
3491 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3492 {
3493         struct ath6kl_vif *vif;
3494
3495         vif = ath6kl_vif_first(ar);
3496         if (!vif && ar->state != ATH6KL_STATE_RECOVERY) {
3497                 /* save the current power mode before enabling power save */
3498                 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3499
3500                 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3501                         ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3502                 return;
3503         }
3504
3505         /*
3506          * FIXME: we should take ar->list_lock to protect changes in the
3507          * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3508          * sleeps.
3509          */
3510         list_for_each_entry(vif, &ar->vif_list, list)
3511                 ath6kl_cfg80211_stop(vif);
3512 }
3513
3514 static void ath6kl_cfg80211_reg_notify(struct wiphy *wiphy,
3515                                        struct regulatory_request *request)
3516 {
3517         struct ath6kl *ar = wiphy_priv(wiphy);
3518         u32 rates[IEEE80211_NUM_BANDS];
3519         int ret, i;
3520
3521         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
3522                    "cfg reg_notify %c%c%s%s initiator %d hint_type %d\n",
3523                    request->alpha2[0], request->alpha2[1],
3524                    request->intersect ? " intersect" : "",
3525                    request->processed ? " processed" : "",
3526                    request->initiator, request->user_reg_hint_type);
3527
3528         if (request->user_reg_hint_type != NL80211_USER_REG_HINT_CELL_BASE)
3529                 return;
3530
3531         ret = ath6kl_wmi_set_regdomain_cmd(ar->wmi, request->alpha2);
3532         if (ret) {
3533                 ath6kl_err("failed to set regdomain: %d\n", ret);
3534                 return;
3535         }
3536
3537         /*
3538          * Firmware will apply the regdomain change only after a scan is
3539          * issued and it will send a WMI_REGDOMAIN_EVENTID when it has been
3540          * changed.
3541          */
3542
3543         for (i = 0; i < IEEE80211_NUM_BANDS; i++)
3544                 if (wiphy->bands[i])
3545                         rates[i] = (1 << wiphy->bands[i]->n_bitrates) - 1;
3546
3547
3548         ret = ath6kl_wmi_beginscan_cmd(ar->wmi, 0, WMI_LONG_SCAN, false,
3549                                        false, 0, ATH6KL_FG_SCAN_INTERVAL,
3550                                        0, NULL, false, rates);
3551         if (ret) {
3552                 ath6kl_err("failed to start scan for a regdomain change: %d\n",
3553                            ret);
3554                 return;
3555         }
3556 }
3557
3558 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3559 {
3560         vif->aggr_cntxt = aggr_init(vif);
3561         if (!vif->aggr_cntxt) {
3562                 ath6kl_err("failed to initialize aggr\n");
3563                 return -ENOMEM;
3564         }
3565
3566         setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3567                     (unsigned long) vif->ndev);
3568         setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3569                     (unsigned long) vif);
3570
3571         set_bit(WMM_ENABLED, &vif->flags);
3572         spin_lock_init(&vif->if_lock);
3573
3574         INIT_LIST_HEAD(&vif->mc_filter);
3575
3576         return 0;
3577 }
3578
3579 void ath6kl_cfg80211_vif_stop(struct ath6kl_vif *vif, bool wmi_ready)
3580 {
3581         static u8 bcast_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
3582         bool discon_issued;
3583
3584         netif_stop_queue(vif->ndev);
3585
3586         clear_bit(WLAN_ENABLED, &vif->flags);
3587
3588         if (wmi_ready) {
3589                 discon_issued = test_bit(CONNECTED, &vif->flags) ||
3590                                 test_bit(CONNECT_PEND, &vif->flags);
3591                 ath6kl_disconnect(vif);
3592                 del_timer(&vif->disconnect_timer);
3593
3594                 if (discon_issued)
3595                         ath6kl_disconnect_event(vif, DISCONNECT_CMD,
3596                                                 (vif->nw_type & AP_NETWORK) ?
3597                                                 bcast_mac : vif->bssid,
3598                                                 0, NULL, 0);
3599         }
3600
3601         if (vif->scan_req) {
3602                 cfg80211_scan_done(vif->scan_req, true);
3603                 vif->scan_req = NULL;
3604         }
3605
3606         /* need to clean up enhanced bmiss detection fw state */
3607         ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
3608 }
3609
3610 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3611 {
3612         struct ath6kl *ar = vif->ar;
3613         struct ath6kl_mc_filter *mc_filter, *tmp;
3614
3615         aggr_module_destroy(vif->aggr_cntxt);
3616
3617         ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3618
3619         if (vif->nw_type == ADHOC_NETWORK)
3620                 ar->ibss_if_active = false;
3621
3622         list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3623                 list_del(&mc_filter->list);
3624                 kfree(mc_filter);
3625         }
3626
3627         unregister_netdevice(vif->ndev);
3628
3629         ar->num_vif--;
3630 }
3631
3632 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
3633                                           enum nl80211_iftype type,
3634                                           u8 fw_vif_idx, u8 nw_type)
3635 {
3636         struct net_device *ndev;
3637         struct ath6kl_vif *vif;
3638
3639         ndev = alloc_netdev(sizeof(*vif), name, ether_setup);
3640         if (!ndev)
3641                 return NULL;
3642
3643         vif = netdev_priv(ndev);
3644         ndev->ieee80211_ptr = &vif->wdev;
3645         vif->wdev.wiphy = ar->wiphy;
3646         vif->ar = ar;
3647         vif->ndev = ndev;
3648         SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3649         vif->wdev.netdev = ndev;
3650         vif->wdev.iftype = type;
3651         vif->fw_vif_idx = fw_vif_idx;
3652         vif->nw_type = nw_type;
3653         vif->next_mode = nw_type;
3654         vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3655         vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3656         vif->bg_scan_period = 0;
3657         vif->htcap[IEEE80211_BAND_2GHZ].ht_enable = true;
3658         vif->htcap[IEEE80211_BAND_5GHZ].ht_enable = true;
3659
3660         memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3661         if (fw_vif_idx != 0) {
3662                 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3663                                      0x2;
3664                 if (test_bit(ATH6KL_FW_CAPABILITY_CUSTOM_MAC_ADDR,
3665                              ar->fw_capabilities))
3666                         ndev->dev_addr[4] ^= 0x80;
3667         }
3668
3669         init_netdev(ndev);
3670
3671         ath6kl_init_control_info(vif);
3672
3673         if (ath6kl_cfg80211_vif_init(vif))
3674                 goto err;
3675
3676         if (register_netdevice(ndev))
3677                 goto err;
3678
3679         ar->avail_idx_map &= ~BIT(fw_vif_idx);
3680         vif->sme_state = SME_DISCONNECTED;
3681         set_bit(WLAN_ENABLED, &vif->flags);
3682         ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3683
3684         if (type == NL80211_IFTYPE_ADHOC)
3685                 ar->ibss_if_active = true;
3686
3687         spin_lock_bh(&ar->list_lock);
3688         list_add_tail(&vif->list, &ar->vif_list);
3689         spin_unlock_bh(&ar->list_lock);
3690
3691         return &vif->wdev;
3692
3693 err:
3694         aggr_module_destroy(vif->aggr_cntxt);
3695         free_netdev(ndev);
3696         return NULL;
3697 }
3698
3699 #ifdef CONFIG_PM
3700 static const struct wiphy_wowlan_support ath6kl_wowlan_support = {
3701         .flags = WIPHY_WOWLAN_MAGIC_PKT |
3702                  WIPHY_WOWLAN_DISCONNECT |
3703                  WIPHY_WOWLAN_GTK_REKEY_FAILURE  |
3704                  WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
3705                  WIPHY_WOWLAN_EAP_IDENTITY_REQ   |
3706                  WIPHY_WOWLAN_4WAY_HANDSHAKE,
3707         .n_patterns = WOW_MAX_FILTERS_PER_LIST,
3708         .pattern_min_len = 1,
3709         .pattern_max_len = WOW_PATTERN_SIZE,
3710 };
3711 #endif
3712
3713 int ath6kl_cfg80211_init(struct ath6kl *ar)
3714 {
3715         struct wiphy *wiphy = ar->wiphy;
3716         bool band_2gig = false, band_5gig = false, ht = false;
3717         int ret;
3718
3719         wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3720
3721         wiphy->max_remain_on_channel_duration = 5000;
3722
3723         /* set device pointer for wiphy */
3724         set_wiphy_dev(wiphy, ar->dev);
3725
3726         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3727                                  BIT(NL80211_IFTYPE_ADHOC) |
3728                                  BIT(NL80211_IFTYPE_AP);
3729         if (ar->p2p) {
3730                 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3731                                           BIT(NL80211_IFTYPE_P2P_CLIENT);
3732         }
3733
3734         if (config_enabled(CONFIG_ATH6KL_REGDOMAIN) &&
3735             test_bit(ATH6KL_FW_CAPABILITY_REGDOMAIN, ar->fw_capabilities)) {
3736                 wiphy->reg_notifier = ath6kl_cfg80211_reg_notify;
3737                 ar->wiphy->features |= NL80211_FEATURE_CELL_BASE_REG_HINTS;
3738         }
3739
3740         /* max num of ssids that can be probed during scanning */
3741         wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3742
3743         /* max num of ssids that can be matched after scan */
3744         if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST,
3745                      ar->fw_capabilities))
3746                 wiphy->max_match_sets = MAX_PROBED_SSIDS;
3747
3748         wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3749         switch (ar->hw.cap) {
3750         case WMI_11AN_CAP:
3751                 ht = true;
3752         case WMI_11A_CAP:
3753                 band_5gig = true;
3754                 break;
3755         case WMI_11GN_CAP:
3756                 ht = true;
3757         case WMI_11G_CAP:
3758                 band_2gig = true;
3759                 break;
3760         case WMI_11AGN_CAP:
3761                 ht = true;
3762         case WMI_11AG_CAP:
3763                 band_2gig = true;
3764                 band_5gig = true;
3765                 break;
3766         default:
3767                 ath6kl_err("invalid phy capability!\n");
3768                 return -EINVAL;
3769         }
3770
3771         /*
3772          * Even if the fw has HT support, advertise HT cap only when
3773          * the firmware has support to override RSN capability, otherwise
3774          * 4-way handshake would fail.
3775          */
3776         if (!(ht &&
3777               test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3778                        ar->fw_capabilities))) {
3779                 ath6kl_band_2ghz.ht_cap.cap = 0;
3780                 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3781                 ath6kl_band_5ghz.ht_cap.cap = 0;
3782                 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3783         }
3784
3785         if (ar->hw.flags & ATH6KL_HW_64BIT_RATES) {
3786                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3787                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3788                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3789                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3790         } else {
3791                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3792                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3793         }
3794
3795         if (band_2gig)
3796                 wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3797         if (band_5gig)
3798                 wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3799
3800         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3801
3802         wiphy->cipher_suites = cipher_suites;
3803         wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3804
3805 #ifdef CONFIG_PM
3806         wiphy->wowlan = &ath6kl_wowlan_support;
3807 #endif
3808
3809         wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3810
3811         ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3812                             WIPHY_FLAG_HAVE_AP_SME |
3813                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3814                             WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3815
3816         if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_V2, ar->fw_capabilities))
3817                 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
3818
3819         if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3820                      ar->fw_capabilities))
3821                 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
3822
3823         ar->wiphy->probe_resp_offload =
3824                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3825                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3826                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3827
3828         ret = wiphy_register(wiphy);
3829         if (ret < 0) {
3830                 ath6kl_err("couldn't register wiphy device\n");
3831                 return ret;
3832         }
3833
3834         ar->wiphy_registered = true;
3835
3836         return 0;
3837 }
3838
3839 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
3840 {
3841         wiphy_unregister(ar->wiphy);
3842
3843         ar->wiphy_registered = false;
3844 }
3845
3846 struct ath6kl *ath6kl_cfg80211_create(void)
3847 {
3848         struct ath6kl *ar;
3849         struct wiphy *wiphy;
3850
3851         /* create a new wiphy for use with cfg80211 */
3852         wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
3853
3854         if (!wiphy) {
3855                 ath6kl_err("couldn't allocate wiphy device\n");
3856                 return NULL;
3857         }
3858
3859         ar = wiphy_priv(wiphy);
3860         ar->wiphy = wiphy;
3861
3862         return ar;
3863 }
3864
3865 /* Note: ar variable must not be accessed after calling this! */
3866 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
3867 {
3868         int i;
3869
3870         for (i = 0; i < AP_MAX_NUM_STA; i++)
3871                 kfree(ar->sta_list[i].aggr_conn);
3872
3873         wiphy_free(ar->wiphy);
3874 }
3875