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 (ar->state != ATH6KL_STATE_SCHED_SCAN)
 151                 return false;
 152
 153         del_timer_sync(&vif->sched_scan_timer);
 154
 155         ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
 156                                            ATH6KL_HOST_MODE_AWAKE);
 157
 158         ar->state = ATH6KL_STATE_ON;
 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                 *nw_type = INFRA_NETWORK;
 373                 break;
 374         case NL80211_IFTYPE_ADHOC:
 375                 *nw_type = ADHOC_NETWORK;
 376                 break;
 377         case NL80211_IFTYPE_AP:
 378                 *nw_type = AP_NETWORK;
 379                 break;
 380         case NL80211_IFTYPE_P2P_CLIENT:
 381                 *nw_type = INFRA_NETWORK;
 382                 break;
 383         case NL80211_IFTYPE_P2P_GO:
 384                 *nw_type = AP_NETWORK;
 385                 break;
 386         default:
 387                 ath6kl_err("invalid interface type %u\n", type);
 388                 return -ENOTSUPP;
 389         }
 390
 391         return 0;
 392 }
 393
 394 static bool ath6kl_is_valid_iftype(struct ath6kl *ar, enum nl80211_iftype type,
 395                                    u8 *if_idx, u8 *nw_type)
 396 {
 397         int i;
 398
 399         if (ath6kl_nliftype_to_drv_iftype(type, nw_type))
 400                 return false;
 401
 402         if (ar->ibss_if_active || ((type == NL80211_IFTYPE_ADHOC) &&
 403                                    ar->num_vif))
 404                 return false;
 405
 406         if (type == NL80211_IFTYPE_STATION ||
 407             type == NL80211_IFTYPE_AP || type == NL80211_IFTYPE_ADHOC) {
 408                 for (i = 0; i < ar->vif_max; i++) {
 409                         if ((ar->avail_idx_map >> i) & BIT(0)) {
 410                                 *if_idx = i;
 411                                 return true;
 412                         }
 413                 }
 414         }
 415
 416         if (type == NL80211_IFTYPE_P2P_CLIENT ||
 417             type == NL80211_IFTYPE_P2P_GO) {
 418                 for (i = ar->max_norm_iface; i < ar->vif_max; i++) {
 419                         if ((ar->avail_idx_map >> i) & BIT(0)) {
 420                                 *if_idx = i;
 421                                 return true;
 422                         }
 423                 }
 424         }
 425
 426         return false;
 427 }
 428
 429 static bool ath6kl_is_tx_pending(struct ath6kl *ar)
 430 {
 431         return ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)] == 0;
 432 }
 433
 434
 435 static int ath6kl_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
 436                                    struct cfg80211_connect_params *sme)
 437 {
 438         struct ath6kl *ar = ath6kl_priv(dev);
 439         struct ath6kl_vif *vif = netdev_priv(dev);
 440         int status;
 441         u8 nw_subtype = (ar->p2p) ? SUBTYPE_P2PDEV : SUBTYPE_NONE;
 442         u16 interval;
 443
 444         ath6kl_cfg80211_sscan_disable(vif);
 445
 446         vif->sme_state = SME_CONNECTING;
 447
 448         if (!ath6kl_cfg80211_ready(vif))
 449                 return -EIO;
 450
 451         if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
 452                 ath6kl_err("destroy in progress\n");
 453                 return -EBUSY;
 454         }
 455
 456         if (test_bit(SKIP_SCAN, &ar->flag) &&
 457             ((sme->channel && sme->channel->center_freq == 0) ||
 458              (sme->bssid && is_zero_ether_addr(sme->bssid)))) {
 459                 ath6kl_err("SkipScan: channel or bssid invalid\n");
 460                 return -EINVAL;
 461         }
 462
 463         if (down_interruptible(&ar->sem)) {
 464                 ath6kl_err("busy, couldn't get access\n");
 465                 return -ERESTARTSYS;
 466         }
 467
 468         if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
 469                 ath6kl_err("busy, destroy in progress\n");
 470                 up(&ar->sem);
 471                 return -EBUSY;
 472         }
 473
 474         if (ar->tx_pending[ath6kl_wmi_get_control_ep(ar->wmi)]) {
 475                 /*
 476                  * sleep until the command queue drains
 477                  */
 478                 wait_event_interruptible_timeout(ar->event_wq,
 479                                                  ath6kl_is_tx_pending(ar),
 480                                                  WMI_TIMEOUT);
 481                 if (signal_pending(current)) {
 482                         ath6kl_err("cmd queue drain timeout\n");
 483                         up(&ar->sem);
 484                         return -EINTR;
 485                 }
 486         }
 487
 488         status = ath6kl_set_assoc_req_ies(vif, sme->ie, sme->ie_len);
 489         if (status) {
 490                 up(&ar->sem);
 491                 return status;
 492         }
 493
 494         if (sme->ie == NULL || sme->ie_len == 0)
 495                 ar->connect_ctrl_flags &= ~CONNECT_WPS_FLAG;
 496
 497         if (test_bit(CONNECTED, &vif->flags) &&
 498             vif->ssid_len == sme->ssid_len &&
 499             !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
 500                 vif->reconnect_flag = true;
 501                 status = ath6kl_wmi_reconnect_cmd(ar->wmi, vif->fw_vif_idx,
 502                                                   vif->req_bssid,
 503                                                   vif->ch_hint);
 504
 505                 up(&ar->sem);
 506                 if (status) {
 507                         ath6kl_err("wmi_reconnect_cmd failed\n");
 508                         return -EIO;
 509                 }
 510                 return 0;
 511         } else if (vif->ssid_len == sme->ssid_len &&
 512                    !memcmp(vif->ssid, sme->ssid, vif->ssid_len)) {
 513                 ath6kl_disconnect(vif);
 514         }
 515
 516         memset(vif->ssid, 0, sizeof(vif->ssid));
 517         vif->ssid_len = sme->ssid_len;
 518         memcpy(vif->ssid, sme->ssid, sme->ssid_len);
 519
 520         if (sme->channel)
 521                 vif->ch_hint = sme->channel->center_freq;
 522
 523         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
 524         if (sme->bssid && !is_broadcast_ether_addr(sme->bssid))
 525                 memcpy(vif->req_bssid, sme->bssid, sizeof(vif->req_bssid));
 526
 527         ath6kl_set_wpa_version(vif, sme->crypto.wpa_versions);
 528
 529         status = ath6kl_set_auth_type(vif, sme->auth_type);
 530         if (status) {
 531                 up(&ar->sem);
 532                 return status;
 533         }
 534
 535         if (sme->crypto.n_ciphers_pairwise)
 536                 ath6kl_set_cipher(vif, sme->crypto.ciphers_pairwise[0], true);
 537         else
 538                 ath6kl_set_cipher(vif, 0, true);
 539
 540         ath6kl_set_cipher(vif, sme->crypto.cipher_group, false);
 541
 542         if (sme->crypto.n_akm_suites)
 543                 ath6kl_set_key_mgmt(vif, sme->crypto.akm_suites[0]);
 544
 545         if ((sme->key_len) &&
 546             (vif->auth_mode == NONE_AUTH) &&
 547             (vif->prwise_crypto == WEP_CRYPT)) {
 548                 struct ath6kl_key *key = NULL;
 549
 550                 if (sme->key_idx > WMI_MAX_KEY_INDEX) {
 551                         ath6kl_err("key index %d out of bounds\n",
 552                                    sme->key_idx);
 553                         up(&ar->sem);
 554                         return -ENOENT;
 555                 }
 556
 557                 key = &vif->keys[sme->key_idx];
 558                 key->key_len = sme->key_len;
 559                 memcpy(key->key, sme->key, key->key_len);
 560                 key->cipher = vif->prwise_crypto;
 561                 vif->def_txkey_index = sme->key_idx;
 562
 563                 ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, sme->key_idx,
 564                                       vif->prwise_crypto,
 565                                       GROUP_USAGE | TX_USAGE,
 566                                       key->key_len,
 567                                       NULL, 0,
 568                                       key->key, KEY_OP_INIT_VAL, NULL,
 569                                       NO_SYNC_WMIFLAG);
 570         }
 571
 572         if (!ar->usr_bss_filter) {
 573                 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
 574                 if (ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
 575                                              ALL_BSS_FILTER, 0) != 0) {
 576                         ath6kl_err("couldn't set bss filtering\n");
 577                         up(&ar->sem);
 578                         return -EIO;
 579                 }
 580         }
 581
 582         vif->nw_type = vif->next_mode;
 583
 584         /* enable enhanced bmiss detection if applicable */
 585         ath6kl_cfg80211_sta_bmiss_enhance(vif, true);
 586
 587         if (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT)
 588                 nw_subtype = SUBTYPE_P2PCLIENT;
 589
 590         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 591                    "%s: connect called with authmode %d dot11 auth %d"
 592                    " PW crypto %d PW crypto len %d GRP crypto %d"
 593                    " GRP crypto len %d channel hint %u\n",
 594                    __func__,
 595                    vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
 596                    vif->prwise_crypto_len, vif->grp_crypto,
 597                    vif->grp_crypto_len, vif->ch_hint);
 598
 599         vif->reconnect_flag = 0;
 600
 601         if (vif->nw_type == INFRA_NETWORK) {
 602                 interval = max_t(u16, vif->listen_intvl_t,
 603                                  ATH6KL_MAX_WOW_LISTEN_INTL);
 604                 status = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
 605                                                        interval,
 606                                                        0);
 607                 if (status) {
 608                         ath6kl_err("couldn't set listen intervel\n");
 609                         up(&ar->sem);
 610                         return status;
 611                 }
 612         }
 613
 614         status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
 615                                         vif->dot11_auth_mode, vif->auth_mode,
 616                                         vif->prwise_crypto,
 617                                         vif->prwise_crypto_len,
 618                                         vif->grp_crypto, vif->grp_crypto_len,
 619                                         vif->ssid_len, vif->ssid,
 620                                         vif->req_bssid, vif->ch_hint,
 621                                         ar->connect_ctrl_flags, nw_subtype);
 622
 623         /* disable background scan if period is 0 */
 624         if (sme->bg_scan_period == 0)
 625                 sme->bg_scan_period = 0xffff;
 626
 627         /* configure default value if not specified */
 628         if (sme->bg_scan_period == -1)
 629                 sme->bg_scan_period = DEFAULT_BG_SCAN_PERIOD;
 630
 631         ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx, 0, 0,
 632                                   sme->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
 633
 634         up(&ar->sem);
 635
 636         if (status == -EINVAL) {
 637                 memset(vif->ssid, 0, sizeof(vif->ssid));
 638                 vif->ssid_len = 0;
 639                 ath6kl_err("invalid request\n");
 640                 return -ENOENT;
 641         } else if (status) {
 642                 ath6kl_err("ath6kl_wmi_connect_cmd failed\n");
 643                 return -EIO;
 644         }
 645
 646         if ((!(ar->connect_ctrl_flags & CONNECT_DO_WPA_OFFLOAD)) &&
 647             ((vif->auth_mode == WPA_PSK_AUTH) ||
 648              (vif->auth_mode == WPA2_PSK_AUTH))) {
 649                 mod_timer(&vif->disconnect_timer,
 650                           jiffies + msecs_to_jiffies(DISCON_TIMER_INTVAL));
 651         }
 652
 653         ar->connect_ctrl_flags &= ~CONNECT_DO_WPA_OFFLOAD;
 654         set_bit(CONNECT_PEND, &vif->flags);
 655
 656         return 0;
 657 }
 658
 659 static struct cfg80211_bss *
 660 ath6kl_add_bss_if_needed(struct ath6kl_vif *vif,
 661                          enum network_type nw_type,
 662                          const u8 *bssid,
 663                          struct ieee80211_channel *chan,
 664                          const u8 *beacon_ie,
 665                          size_t beacon_ie_len)
 666 {
 667         struct ath6kl *ar = vif->ar;
 668         struct cfg80211_bss *bss;
 669         u16 cap_mask, cap_val;
 670         u8 *ie;
 671
 672         if (nw_type & ADHOC_NETWORK) {
 673                 cap_mask = WLAN_CAPABILITY_IBSS;
 674                 cap_val = WLAN_CAPABILITY_IBSS;
 675         } else {
 676                 cap_mask = WLAN_CAPABILITY_ESS;
 677                 cap_val = WLAN_CAPABILITY_ESS;
 678         }
 679
 680         bss = cfg80211_get_bss(ar->wiphy, chan, bssid,
 681                                vif->ssid, vif->ssid_len,
 682                                cap_mask, cap_val);
 683         if (bss == NULL) {
 684                 /*
 685                  * Since cfg80211 may not yet know about the BSS,
 686                  * generate a partial entry until the first BSS info
 687                  * event becomes available.
 688                  *
 689                  * Prepend SSID element since it is not included in the Beacon
 690                  * IEs from the target.
 691                  */
 692                 ie = kmalloc(2 + vif->ssid_len + beacon_ie_len, GFP_KERNEL);
 693                 if (ie == NULL)
 694                         return NULL;
 695                 ie[0] = WLAN_EID_SSID;
 696                 ie[1] = vif->ssid_len;
 697                 memcpy(ie + 2, vif->ssid, vif->ssid_len);
 698                 memcpy(ie + 2 + vif->ssid_len, beacon_ie, beacon_ie_len);
 699                 bss = cfg80211_inform_bss(ar->wiphy, chan,
 700                                           bssid, 0, cap_val, 100,
 701                                           ie, 2 + vif->ssid_len + beacon_ie_len,
 702                                           0, GFP_KERNEL);
 703                 if (bss)
 704                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 705                                    "added bss %pM to cfg80211\n", bssid);
 706                 kfree(ie);
 707         } else
 708                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "cfg80211 already has a bss\n");
 709
 710         return bss;
 711 }
 712
 713 void ath6kl_cfg80211_connect_event(struct ath6kl_vif *vif, u16 channel,
 714                                    u8 *bssid, u16 listen_intvl,
 715                                    u16 beacon_intvl,
 716                                    enum network_type nw_type,
 717                                    u8 beacon_ie_len, u8 assoc_req_len,
 718                                    u8 assoc_resp_len, u8 *assoc_info)
 719 {
 720         struct ieee80211_channel *chan;
 721         struct ath6kl *ar = vif->ar;
 722         struct cfg80211_bss *bss;
 723
 724         /* capinfo + listen interval */
 725         u8 assoc_req_ie_offset = sizeof(u16) + sizeof(u16);
 726
 727         /* capinfo + status code +  associd */
 728         u8 assoc_resp_ie_offset = sizeof(u16) + sizeof(u16) + sizeof(u16);
 729
 730         u8 *assoc_req_ie = assoc_info + beacon_ie_len + assoc_req_ie_offset;
 731         u8 *assoc_resp_ie = assoc_info + beacon_ie_len + assoc_req_len +
 732             assoc_resp_ie_offset;
 733
 734         assoc_req_len -= assoc_req_ie_offset;
 735         assoc_resp_len -= assoc_resp_ie_offset;
 736
 737         /*
 738          * Store Beacon interval here; DTIM period will be available only once
 739          * a Beacon frame from the AP is seen.
 740          */
 741         vif->assoc_bss_beacon_int = beacon_intvl;
 742         clear_bit(DTIM_PERIOD_AVAIL, &vif->flags);
 743
 744         if (nw_type & ADHOC_NETWORK) {
 745                 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
 746                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 747                                    "%s: ath6k not in ibss mode\n", __func__);
 748                         return;
 749                 }
 750         }
 751
 752         if (nw_type & INFRA_NETWORK) {
 753                 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
 754                     vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
 755                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 756                                    "%s: ath6k not in station mode\n", __func__);
 757                         return;
 758                 }
 759         }
 760
 761         chan = ieee80211_get_channel(ar->wiphy, (int) channel);
 762
 763         bss = ath6kl_add_bss_if_needed(vif, nw_type, bssid, chan,
 764                                        assoc_info, beacon_ie_len);
 765         if (!bss) {
 766                 ath6kl_err("could not add cfg80211 bss entry\n");
 767                 return;
 768         }
 769
 770         if (nw_type & ADHOC_NETWORK) {
 771                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "ad-hoc %s selected\n",
 772                            nw_type & ADHOC_CREATOR ? "creator" : "joiner");
 773                 cfg80211_ibss_joined(vif->ndev, bssid, GFP_KERNEL);
 774                 cfg80211_put_bss(bss);
 775                 return;
 776         }
 777
 778         if (vif->sme_state == SME_CONNECTING) {
 779                 /* inform connect result to cfg80211 */
 780                 vif->sme_state = SME_CONNECTED;
 781                 cfg80211_connect_result(vif->ndev, bssid,
 782                                         assoc_req_ie, assoc_req_len,
 783                                         assoc_resp_ie, assoc_resp_len,
 784                                         WLAN_STATUS_SUCCESS, GFP_KERNEL);
 785                 cfg80211_put_bss(bss);
 786         } else if (vif->sme_state == SME_CONNECTED) {
 787                 /* inform roam event to cfg80211 */
 788                 cfg80211_roamed_bss(vif->ndev, bss, assoc_req_ie, assoc_req_len,
 789                                     assoc_resp_ie, assoc_resp_len, GFP_KERNEL);
 790         }
 791 }
 792
 793 static int ath6kl_cfg80211_disconnect(struct wiphy *wiphy,
 794                                       struct net_device *dev, u16 reason_code)
 795 {
 796         struct ath6kl *ar = ath6kl_priv(dev);
 797         struct ath6kl_vif *vif = netdev_priv(dev);
 798
 799         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: reason=%u\n", __func__,
 800                    reason_code);
 801
 802         ath6kl_cfg80211_sscan_disable(vif);
 803
 804         if (!ath6kl_cfg80211_ready(vif))
 805                 return -EIO;
 806
 807         if (test_bit(DESTROY_IN_PROGRESS, &ar->flag)) {
 808                 ath6kl_err("busy, destroy in progress\n");
 809                 return -EBUSY;
 810         }
 811
 812         if (down_interruptible(&ar->sem)) {
 813                 ath6kl_err("busy, couldn't get access\n");
 814                 return -ERESTARTSYS;
 815         }
 816
 817         vif->reconnect_flag = 0;
 818         ath6kl_disconnect(vif);
 819         memset(vif->ssid, 0, sizeof(vif->ssid));
 820         vif->ssid_len = 0;
 821
 822         if (!test_bit(SKIP_SCAN, &ar->flag))
 823                 memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
 824
 825         up(&ar->sem);
 826
 827         vif->sme_state = SME_DISCONNECTED;
 828
 829         return 0;
 830 }
 831
 832 void ath6kl_cfg80211_disconnect_event(struct ath6kl_vif *vif, u8 reason,
 833                                       u8 *bssid, u8 assoc_resp_len,
 834                                       u8 *assoc_info, u16 proto_reason)
 835 {
 836         struct ath6kl *ar = vif->ar;
 837
 838         if (vif->scan_req) {
 839                 cfg80211_scan_done(vif->scan_req, true);
 840                 vif->scan_req = NULL;
 841         }
 842
 843         if (vif->nw_type & ADHOC_NETWORK) {
 844                 if (vif->wdev.iftype != NL80211_IFTYPE_ADHOC) {
 845                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 846                                    "%s: ath6k not in ibss mode\n", __func__);
 847                         return;
 848                 }
 849                 memset(bssid, 0, ETH_ALEN);
 850                 cfg80211_ibss_joined(vif->ndev, bssid, GFP_KERNEL);
 851                 return;
 852         }
 853
 854         if (vif->nw_type & INFRA_NETWORK) {
 855                 if (vif->wdev.iftype != NL80211_IFTYPE_STATION &&
 856                     vif->wdev.iftype != NL80211_IFTYPE_P2P_CLIENT) {
 857                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
 858                                    "%s: ath6k not in station mode\n", __func__);
 859                         return;
 860                 }
 861         }
 862
 863         clear_bit(CONNECT_PEND, &vif->flags);
 864
 865         if (vif->sme_state == SME_CONNECTING) {
 866                 cfg80211_connect_result(vif->ndev,
 867                                         bssid, NULL, 0,
 868                                         NULL, 0,
 869                                         WLAN_STATUS_UNSPECIFIED_FAILURE,
 870                                         GFP_KERNEL);
 871         } else if (vif->sme_state == SME_CONNECTED) {
 872                 cfg80211_disconnected(vif->ndev, proto_reason,
 873                                       NULL, 0, GFP_KERNEL);
 874         }
 875
 876         vif->sme_state = SME_DISCONNECTED;
 877
 878         /*
 879          * Send a disconnect command to target when a disconnect event is
 880          * received with reason code other than 3 (DISCONNECT_CMD - disconnect
 881          * request from host) to make the firmware stop trying to connect even
 882          * after giving disconnect event. There will be one more disconnect
 883          * event for this disconnect command with reason code DISCONNECT_CMD
 884          * which won't be notified to cfg80211.
 885          */
 886         if (reason != DISCONNECT_CMD)
 887                 ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
 888 }
 889
 890 static int ath6kl_set_probed_ssids(struct ath6kl *ar,
 891                                    struct ath6kl_vif *vif,
 892                                    struct cfg80211_ssid *ssids, int n_ssids,
 893                                    struct cfg80211_match_set *match_set,
 894                                    int n_match_ssid)
 895 {
 896         u8 i, j, index_to_add, ssid_found = false;
 897         struct ath6kl_cfg80211_match_probe_ssid ssid_list[MAX_PROBED_SSIDS];
 898
 899         memset(ssid_list, 0, sizeof(ssid_list));
 900
 901         if (n_ssids > MAX_PROBED_SSIDS ||
 902             n_match_ssid > MAX_PROBED_SSIDS)
 903                 return -EINVAL;
 904
 905         for (i = 0; i < n_ssids; i++) {
 906                 memcpy(ssid_list[i].ssid.ssid,
 907                        ssids[i].ssid,
 908                        ssids[i].ssid_len);
 909                 ssid_list[i].ssid.ssid_len = ssids[i].ssid_len;
 910
 911                 if (ssids[i].ssid_len)
 912                         ssid_list[i].flag = SPECIFIC_SSID_FLAG;
 913                 else
 914                         ssid_list[i].flag = ANY_SSID_FLAG;
 915
 916                 if (n_match_ssid == 0)
 917                         ssid_list[i].flag |= MATCH_SSID_FLAG;
 918         }
 919
 920         index_to_add = i;
 921
 922         for (i = 0; i < n_match_ssid; i++) {
 923                 ssid_found = false;
 924
 925                 for (j = 0; j < n_ssids; j++) {
 926                         if ((match_set[i].ssid.ssid_len ==
 927                              ssid_list[j].ssid.ssid_len) &&
 928                             (!memcmp(ssid_list[j].ssid.ssid,
 929                                      match_set[i].ssid.ssid,
 930                                      match_set[i].ssid.ssid_len))) {
 931                                 ssid_list[j].flag |= MATCH_SSID_FLAG;
 932                                 ssid_found = true;
 933                                 break;
 934                         }
 935                 }
 936
 937                 if (ssid_found)
 938                         continue;
 939
 940                 if (index_to_add >= MAX_PROBED_SSIDS)
 941                         continue;
 942
 943                 ssid_list[index_to_add].ssid.ssid_len =
 944                         match_set[i].ssid.ssid_len;
 945                 memcpy(ssid_list[index_to_add].ssid.ssid,
 946                        match_set[i].ssid.ssid,
 947                        match_set[i].ssid.ssid_len);
 948                 ssid_list[index_to_add].flag |= MATCH_SSID_FLAG;
 949                 index_to_add++;
 950         }
 951
 952         for (i = 0; i < index_to_add; i++) {
 953                 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
 954                                           ssid_list[i].flag,
 955                                           ssid_list[i].ssid.ssid_len,
 956                                           ssid_list[i].ssid.ssid);
 957
 958         }
 959
 960         /* Make sure no old entries are left behind */
 961         for (i = index_to_add; i < MAX_PROBED_SSIDS; i++) {
 962                 ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx, i,
 963                                           DISABLE_SSID_FLAG, 0, NULL);
 964         }
 965
 966         return 0;
 967 }
 968
 969 static int ath6kl_cfg80211_scan(struct wiphy *wiphy,
 970                                 struct cfg80211_scan_request *request)
 971 {
 972         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(request->wdev);
 973         struct ath6kl *ar = ath6kl_priv(vif->ndev);
 974         s8 n_channels = 0;
 975         u16 *channels = NULL;
 976         int ret = 0;
 977         u32 force_fg_scan = 0;
 978
 979         if (!ath6kl_cfg80211_ready(vif))
 980                 return -EIO;
 981
 982         ath6kl_cfg80211_sscan_disable(vif);
 983
 984         if (!ar->usr_bss_filter) {
 985                 clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
 986                 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
 987                                                ALL_BSS_FILTER, 0);
 988                 if (ret) {
 989                         ath6kl_err("couldn't set bss filtering\n");
 990                         return ret;
 991                 }
 992         }
 993
 994         ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
 995                                       request->n_ssids, NULL, 0);
 996         if (ret < 0)
 997                 return ret;
 998
 999         /* this also clears IE in fw if it's not set */
1000         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
1001                                        WMI_FRAME_PROBE_REQ,
1002                                        request->ie, request->ie_len);
1003         if (ret) {
1004                 ath6kl_err("failed to set Probe Request appie for scan\n");
1005                 return ret;
1006         }
1007
1008         /*
1009          * Scan only the requested channels if the request specifies a set of
1010          * channels. If the list is longer than the target supports, do not
1011          * configure the list and instead, scan all available channels.
1012          */
1013         if (request->n_channels > 0 &&
1014             request->n_channels <= WMI_MAX_CHANNELS) {
1015                 u8 i;
1016
1017                 n_channels = request->n_channels;
1018
1019                 channels = kzalloc(n_channels * sizeof(u16), GFP_KERNEL);
1020                 if (channels == NULL) {
1021                         ath6kl_warn("failed to set scan channels, scan all channels");
1022                         n_channels = 0;
1023                 }
1024
1025                 for (i = 0; i < n_channels; i++)
1026                         channels[i] = request->channels[i]->center_freq;
1027         }
1028
1029         if (test_bit(CONNECTED, &vif->flags))
1030                 force_fg_scan = 1;
1031
1032         vif->scan_req = request;
1033
1034         if (test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1035                      ar->fw_capabilities)) {
1036                 /*
1037                  * If capable of doing P2P mgmt operations using
1038                  * station interface, send additional information like
1039                  * supported rates to advertise and xmit rates for
1040                  * probe requests
1041                  */
1042                 ret = ath6kl_wmi_beginscan_cmd(ar->wmi, vif->fw_vif_idx,
1043                                                 WMI_LONG_SCAN, force_fg_scan,
1044                                                 false, 0,
1045                                                 ATH6KL_FG_SCAN_INTERVAL,
1046                                                 n_channels, channels,
1047                                                 request->no_cck,
1048                                                 request->rates);
1049         } else {
1050                 ret = ath6kl_wmi_startscan_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         }
1056         if (ret) {
1057                 ath6kl_err("wmi_startscan_cmd failed\n");
1058                 vif->scan_req = NULL;
1059         }
1060
1061         kfree(channels);
1062
1063         return ret;
1064 }
1065
1066 void ath6kl_cfg80211_scan_complete_event(struct ath6kl_vif *vif, bool aborted)
1067 {
1068         struct ath6kl *ar = vif->ar;
1069         int i;
1070
1071         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: status%s\n", __func__,
1072                    aborted ? " aborted" : "");
1073
1074         if (!vif->scan_req)
1075                 return;
1076
1077         if (aborted)
1078                 goto out;
1079
1080         if (vif->scan_req->n_ssids && vif->scan_req->ssids[0].ssid_len) {
1081                 for (i = 0; i < vif->scan_req->n_ssids; i++) {
1082                         ath6kl_wmi_probedssid_cmd(ar->wmi, vif->fw_vif_idx,
1083                                                   i + 1, DISABLE_SSID_FLAG,
1084                                                   0, NULL);
1085                 }
1086         }
1087
1088 out:
1089         cfg80211_scan_done(vif->scan_req, aborted);
1090         vif->scan_req = NULL;
1091 }
1092
1093 void ath6kl_cfg80211_ch_switch_notify(struct ath6kl_vif *vif, int freq,
1094                                       enum wmi_phy_mode mode)
1095 {
1096         enum nl80211_channel_type type;
1097
1098         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1099                    "channel switch notify nw_type %d freq %d mode %d\n",
1100                    vif->nw_type, freq, mode);
1101
1102         type = (mode == WMI_11G_HT20) ? NL80211_CHAN_HT20 : NL80211_CHAN_NO_HT;
1103
1104         cfg80211_ch_switch_notify(vif->ndev, freq, type);
1105 }
1106
1107 static int ath6kl_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
1108                                    u8 key_index, bool pairwise,
1109                                    const u8 *mac_addr,
1110                                    struct key_params *params)
1111 {
1112         struct ath6kl *ar = ath6kl_priv(ndev);
1113         struct ath6kl_vif *vif = netdev_priv(ndev);
1114         struct ath6kl_key *key = NULL;
1115         int seq_len;
1116         u8 key_usage;
1117         u8 key_type;
1118
1119         if (!ath6kl_cfg80211_ready(vif))
1120                 return -EIO;
1121
1122         if (params->cipher == CCKM_KRK_CIPHER_SUITE) {
1123                 if (params->key_len != WMI_KRK_LEN)
1124                         return -EINVAL;
1125                 return ath6kl_wmi_add_krk_cmd(ar->wmi, vif->fw_vif_idx,
1126                                               params->key);
1127         }
1128
1129         if (key_index > WMI_MAX_KEY_INDEX) {
1130                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1131                            "%s: key index %d out of bounds\n", __func__,
1132                            key_index);
1133                 return -ENOENT;
1134         }
1135
1136         key = &vif->keys[key_index];
1137         memset(key, 0, sizeof(struct ath6kl_key));
1138
1139         if (pairwise)
1140                 key_usage = PAIRWISE_USAGE;
1141         else
1142                 key_usage = GROUP_USAGE;
1143
1144         seq_len = params->seq_len;
1145         if (params->cipher == WLAN_CIPHER_SUITE_SMS4 &&
1146             seq_len > ATH6KL_KEY_SEQ_LEN) {
1147                 /* Only first half of the WPI PN is configured */
1148                 seq_len = ATH6KL_KEY_SEQ_LEN;
1149         }
1150         if (params->key_len > WLAN_MAX_KEY_LEN ||
1151             seq_len > sizeof(key->seq))
1152                 return -EINVAL;
1153
1154         key->key_len = params->key_len;
1155         memcpy(key->key, params->key, key->key_len);
1156         key->seq_len = seq_len;
1157         memcpy(key->seq, params->seq, key->seq_len);
1158         key->cipher = params->cipher;
1159
1160         switch (key->cipher) {
1161         case WLAN_CIPHER_SUITE_WEP40:
1162         case WLAN_CIPHER_SUITE_WEP104:
1163                 key_type = WEP_CRYPT;
1164                 break;
1165
1166         case WLAN_CIPHER_SUITE_TKIP:
1167                 key_type = TKIP_CRYPT;
1168                 break;
1169
1170         case WLAN_CIPHER_SUITE_CCMP:
1171                 key_type = AES_CRYPT;
1172                 break;
1173         case WLAN_CIPHER_SUITE_SMS4:
1174                 key_type = WAPI_CRYPT;
1175                 break;
1176
1177         default:
1178                 return -ENOTSUPP;
1179         }
1180
1181         if (((vif->auth_mode == WPA_PSK_AUTH) ||
1182              (vif->auth_mode == WPA2_PSK_AUTH)) &&
1183             (key_usage & GROUP_USAGE))
1184                 del_timer(&vif->disconnect_timer);
1185
1186         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1187                    "%s: index %d, key_len %d, key_type 0x%x, key_usage 0x%x, seq_len %d\n",
1188                    __func__, key_index, key->key_len, key_type,
1189                    key_usage, key->seq_len);
1190
1191         if (vif->nw_type == AP_NETWORK && !pairwise &&
1192             (key_type == TKIP_CRYPT || key_type == AES_CRYPT ||
1193              key_type == WAPI_CRYPT)) {
1194                 ar->ap_mode_bkey.valid = true;
1195                 ar->ap_mode_bkey.key_index = key_index;
1196                 ar->ap_mode_bkey.key_type = key_type;
1197                 ar->ap_mode_bkey.key_len = key->key_len;
1198                 memcpy(ar->ap_mode_bkey.key, key->key, key->key_len);
1199                 if (!test_bit(CONNECTED, &vif->flags)) {
1200                         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1201                                    "Delay initial group key configuration until AP mode has been started\n");
1202                         /*
1203                          * The key will be set in ath6kl_connect_ap_mode() once
1204                          * the connected event is received from the target.
1205                          */
1206                         return 0;
1207                 }
1208         }
1209
1210         if (vif->next_mode == AP_NETWORK && key_type == WEP_CRYPT &&
1211             !test_bit(CONNECTED, &vif->flags)) {
1212                 /*
1213                  * Store the key locally so that it can be re-configured after
1214                  * the AP mode has properly started
1215                  * (ath6kl_install_statioc_wep_keys).
1216                  */
1217                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1218                            "Delay WEP key configuration until AP mode has been started\n");
1219                 vif->wep_key_list[key_index].key_len = key->key_len;
1220                 memcpy(vif->wep_key_list[key_index].key, key->key,
1221                        key->key_len);
1222                 return 0;
1223         }
1224
1225         return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx, key_index,
1226                                      key_type, key_usage, key->key_len,
1227                                      key->seq, key->seq_len, key->key,
1228                                      KEY_OP_INIT_VAL,
1229                                      (u8 *) mac_addr, SYNC_BOTH_WMIFLAG);
1230 }
1231
1232 static int ath6kl_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
1233                                    u8 key_index, bool pairwise,
1234                                    const u8 *mac_addr)
1235 {
1236         struct ath6kl *ar = ath6kl_priv(ndev);
1237         struct ath6kl_vif *vif = netdev_priv(ndev);
1238
1239         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1240
1241         if (!ath6kl_cfg80211_ready(vif))
1242                 return -EIO;
1243
1244         if (key_index > WMI_MAX_KEY_INDEX) {
1245                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1246                            "%s: key index %d out of bounds\n", __func__,
1247                            key_index);
1248                 return -ENOENT;
1249         }
1250
1251         if (!vif->keys[key_index].key_len) {
1252                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1253                            "%s: index %d is empty\n", __func__, key_index);
1254                 return 0;
1255         }
1256
1257         vif->keys[key_index].key_len = 0;
1258
1259         return ath6kl_wmi_deletekey_cmd(ar->wmi, vif->fw_vif_idx, key_index);
1260 }
1261
1262 static int ath6kl_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
1263                                    u8 key_index, bool pairwise,
1264                                    const u8 *mac_addr, void *cookie,
1265                                    void (*callback) (void *cookie,
1266                                                      struct key_params *))
1267 {
1268         struct ath6kl_vif *vif = netdev_priv(ndev);
1269         struct ath6kl_key *key = NULL;
1270         struct key_params params;
1271
1272         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1273
1274         if (!ath6kl_cfg80211_ready(vif))
1275                 return -EIO;
1276
1277         if (key_index > WMI_MAX_KEY_INDEX) {
1278                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1279                            "%s: key index %d out of bounds\n", __func__,
1280                            key_index);
1281                 return -ENOENT;
1282         }
1283
1284         key = &vif->keys[key_index];
1285         memset(&params, 0, sizeof(params));
1286         params.cipher = key->cipher;
1287         params.key_len = key->key_len;
1288         params.seq_len = key->seq_len;
1289         params.seq = key->seq;
1290         params.key = key->key;
1291
1292         callback(cookie, &params);
1293
1294         return key->key_len ? 0 : -ENOENT;
1295 }
1296
1297 static int ath6kl_cfg80211_set_default_key(struct wiphy *wiphy,
1298                                            struct net_device *ndev,
1299                                            u8 key_index, bool unicast,
1300                                            bool multicast)
1301 {
1302         struct ath6kl *ar = ath6kl_priv(ndev);
1303         struct ath6kl_vif *vif = netdev_priv(ndev);
1304         struct ath6kl_key *key = NULL;
1305         u8 key_usage;
1306         enum crypto_type key_type = NONE_CRYPT;
1307
1308         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: index %d\n", __func__, key_index);
1309
1310         if (!ath6kl_cfg80211_ready(vif))
1311                 return -EIO;
1312
1313         if (key_index > WMI_MAX_KEY_INDEX) {
1314                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1315                            "%s: key index %d out of bounds\n",
1316                            __func__, key_index);
1317                 return -ENOENT;
1318         }
1319
1320         if (!vif->keys[key_index].key_len) {
1321                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: invalid key index %d\n",
1322                            __func__, key_index);
1323                 return -EINVAL;
1324         }
1325
1326         vif->def_txkey_index = key_index;
1327         key = &vif->keys[vif->def_txkey_index];
1328         key_usage = GROUP_USAGE;
1329         if (vif->prwise_crypto == WEP_CRYPT)
1330                 key_usage |= TX_USAGE;
1331         if (unicast)
1332                 key_type = vif->prwise_crypto;
1333         if (multicast)
1334                 key_type = vif->grp_crypto;
1335
1336         if (vif->next_mode == AP_NETWORK && !test_bit(CONNECTED, &vif->flags))
1337                 return 0; /* Delay until AP mode has been started */
1338
1339         return ath6kl_wmi_addkey_cmd(ar->wmi, vif->fw_vif_idx,
1340                                      vif->def_txkey_index,
1341                                      key_type, key_usage,
1342                                      key->key_len, key->seq, key->seq_len,
1343                                      key->key,
1344                                      KEY_OP_INIT_VAL, NULL,
1345                                      SYNC_BOTH_WMIFLAG);
1346 }
1347
1348 void ath6kl_cfg80211_tkip_micerr_event(struct ath6kl_vif *vif, u8 keyid,
1349                                        bool ismcast)
1350 {
1351         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1352                    "%s: keyid %d, ismcast %d\n", __func__, keyid, ismcast);
1353
1354         cfg80211_michael_mic_failure(vif->ndev, vif->bssid,
1355                                      (ismcast ? NL80211_KEYTYPE_GROUP :
1356                                       NL80211_KEYTYPE_PAIRWISE), keyid, NULL,
1357                                      GFP_KERNEL);
1358 }
1359
1360 static int ath6kl_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
1361 {
1362         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1363         struct ath6kl_vif *vif;
1364         int ret;
1365
1366         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: changed 0x%x\n", __func__,
1367                    changed);
1368
1369         vif = ath6kl_vif_first(ar);
1370         if (!vif)
1371                 return -EIO;
1372
1373         if (!ath6kl_cfg80211_ready(vif))
1374                 return -EIO;
1375
1376         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
1377                 ret = ath6kl_wmi_set_rts_cmd(ar->wmi, wiphy->rts_threshold);
1378                 if (ret != 0) {
1379                         ath6kl_err("ath6kl_wmi_set_rts_cmd failed\n");
1380                         return -EIO;
1381                 }
1382         }
1383
1384         return 0;
1385 }
1386
1387 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1388                                        struct wireless_dev *wdev,
1389                                        enum nl80211_tx_power_setting type,
1390                                        int mbm)
1391 {
1392         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1393         struct ath6kl_vif *vif;
1394         int dbm = MBM_TO_DBM(mbm);
1395
1396         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1397                    type, dbm);
1398
1399         vif = ath6kl_vif_first(ar);
1400         if (!vif)
1401                 return -EIO;
1402
1403         if (!ath6kl_cfg80211_ready(vif))
1404                 return -EIO;
1405
1406         switch (type) {
1407         case NL80211_TX_POWER_AUTOMATIC:
1408                 return 0;
1409         case NL80211_TX_POWER_LIMITED:
1410                 ar->tx_pwr = dbm;
1411                 break;
1412         default:
1413                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1414                            __func__, type);
1415                 return -EOPNOTSUPP;
1416         }
1417
1418         ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1419
1420         return 0;
1421 }
1422
1423 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy,
1424                                        struct wireless_dev *wdev,
1425                                        int *dbm)
1426 {
1427         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1428         struct ath6kl_vif *vif;
1429
1430         vif = ath6kl_vif_first(ar);
1431         if (!vif)
1432                 return -EIO;
1433
1434         if (!ath6kl_cfg80211_ready(vif))
1435                 return -EIO;
1436
1437         if (test_bit(CONNECTED, &vif->flags)) {
1438                 ar->tx_pwr = 0;
1439
1440                 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1441                         ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1442                         return -EIO;
1443                 }
1444
1445                 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1446                                                  5 * HZ);
1447
1448                 if (signal_pending(current)) {
1449                         ath6kl_err("target did not respond\n");
1450                         return -EINTR;
1451                 }
1452         }
1453
1454         *dbm = ar->tx_pwr;
1455         return 0;
1456 }
1457
1458 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1459                                           struct net_device *dev,
1460                                           bool pmgmt, int timeout)
1461 {
1462         struct ath6kl *ar = ath6kl_priv(dev);
1463         struct wmi_power_mode_cmd mode;
1464         struct ath6kl_vif *vif = netdev_priv(dev);
1465
1466         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1467                    __func__, pmgmt, timeout);
1468
1469         if (!ath6kl_cfg80211_ready(vif))
1470                 return -EIO;
1471
1472         if (pmgmt) {
1473                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1474                 mode.pwr_mode = REC_POWER;
1475         } else {
1476                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1477                 mode.pwr_mode = MAX_PERF_POWER;
1478         }
1479
1480         if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1481                                      mode.pwr_mode) != 0) {
1482                 ath6kl_err("wmi_powermode_cmd failed\n");
1483                 return -EIO;
1484         }
1485
1486         return 0;
1487 }
1488
1489 static struct wireless_dev *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1490                                                       const char *name,
1491                                                       enum nl80211_iftype type,
1492                                                       u32 *flags,
1493                                                       struct vif_params *params)
1494 {
1495         struct ath6kl *ar = wiphy_priv(wiphy);
1496         struct wireless_dev *wdev;
1497         u8 if_idx, nw_type;
1498
1499         if (ar->num_vif == ar->vif_max) {
1500                 ath6kl_err("Reached maximum number of supported vif\n");
1501                 return ERR_PTR(-EINVAL);
1502         }
1503
1504         if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1505                 ath6kl_err("Not a supported interface type\n");
1506                 return ERR_PTR(-EINVAL);
1507         }
1508
1509         wdev = ath6kl_interface_add(ar, name, type, if_idx, nw_type);
1510         if (!wdev)
1511                 return ERR_PTR(-ENOMEM);
1512
1513         ar->num_vif++;
1514
1515         return wdev;
1516 }
1517
1518 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1519                                      struct wireless_dev *wdev)
1520 {
1521         struct ath6kl *ar = wiphy_priv(wiphy);
1522         struct ath6kl_vif *vif = netdev_priv(wdev->netdev);
1523
1524         spin_lock_bh(&ar->list_lock);
1525         list_del(&vif->list);
1526         spin_unlock_bh(&ar->list_lock);
1527
1528         ath6kl_cleanup_vif(vif, test_bit(WMI_READY, &ar->flag));
1529
1530         ath6kl_cfg80211_vif_cleanup(vif);
1531
1532         return 0;
1533 }
1534
1535 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1536                                         struct net_device *ndev,
1537                                         enum nl80211_iftype type, u32 *flags,
1538                                         struct vif_params *params)
1539 {
1540         struct ath6kl_vif *vif = netdev_priv(ndev);
1541         int i;
1542
1543         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1544
1545         /*
1546          * Don't bring up p2p on an interface which is not initialized
1547          * for p2p operation where fw does not have capability to switch
1548          * dynamically between non-p2p and p2p type interface.
1549          */
1550         if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1551                       vif->ar->fw_capabilities) &&
1552             (type == NL80211_IFTYPE_P2P_CLIENT ||
1553              type == NL80211_IFTYPE_P2P_GO)) {
1554                 if (vif->ar->vif_max == 1) {
1555                         if (vif->fw_vif_idx != 0)
1556                                 return -EINVAL;
1557                         else
1558                                 goto set_iface_type;
1559                 }
1560
1561                 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1562                         if (i == vif->fw_vif_idx)
1563                                 break;
1564                 }
1565
1566                 if (i == vif->ar->vif_max) {
1567                         ath6kl_err("Invalid interface to bring up P2P\n");
1568                         return -EINVAL;
1569                 }
1570         }
1571
1572         /* need to clean up enhanced bmiss detection fw state */
1573         ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1574
1575 set_iface_type:
1576         switch (type) {
1577         case NL80211_IFTYPE_STATION:
1578                 vif->next_mode = INFRA_NETWORK;
1579                 break;
1580         case NL80211_IFTYPE_ADHOC:
1581                 vif->next_mode = ADHOC_NETWORK;
1582                 break;
1583         case NL80211_IFTYPE_AP:
1584                 vif->next_mode = AP_NETWORK;
1585                 break;
1586         case NL80211_IFTYPE_P2P_CLIENT:
1587                 vif->next_mode = INFRA_NETWORK;
1588                 break;
1589         case NL80211_IFTYPE_P2P_GO:
1590                 vif->next_mode = AP_NETWORK;
1591                 break;
1592         default:
1593                 ath6kl_err("invalid interface type %u\n", type);
1594                 return -EOPNOTSUPP;
1595         }
1596
1597         vif->wdev.iftype = type;
1598
1599         return 0;
1600 }
1601
1602 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1603                                      struct net_device *dev,
1604                                      struct cfg80211_ibss_params *ibss_param)
1605 {
1606         struct ath6kl *ar = ath6kl_priv(dev);
1607         struct ath6kl_vif *vif = netdev_priv(dev);
1608         int status;
1609
1610         if (!ath6kl_cfg80211_ready(vif))
1611                 return -EIO;
1612
1613         vif->ssid_len = ibss_param->ssid_len;
1614         memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1615
1616         if (ibss_param->channel)
1617                 vif->ch_hint = ibss_param->channel->center_freq;
1618
1619         if (ibss_param->channel_fixed) {
1620                 /*
1621                  * TODO: channel_fixed: The channel should be fixed, do not
1622                  * search for IBSSs to join on other channels. Target
1623                  * firmware does not support this feature, needs to be
1624                  * updated.
1625                  */
1626                 return -EOPNOTSUPP;
1627         }
1628
1629         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1630         if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1631                 memcpy(vif->req_bssid, ibss_param->bssid,
1632                        sizeof(vif->req_bssid));
1633
1634         ath6kl_set_wpa_version(vif, 0);
1635
1636         status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1637         if (status)
1638                 return status;
1639
1640         if (ibss_param->privacy) {
1641                 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1642                 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1643         } else {
1644                 ath6kl_set_cipher(vif, 0, true);
1645                 ath6kl_set_cipher(vif, 0, false);
1646         }
1647
1648         vif->nw_type = vif->next_mode;
1649
1650         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1651                    "%s: connect called with authmode %d dot11 auth %d"
1652                    " PW crypto %d PW crypto len %d GRP crypto %d"
1653                    " GRP crypto len %d channel hint %u\n",
1654                    __func__,
1655                    vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1656                    vif->prwise_crypto_len, vif->grp_crypto,
1657                    vif->grp_crypto_len, vif->ch_hint);
1658
1659         status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1660                                         vif->dot11_auth_mode, vif->auth_mode,
1661                                         vif->prwise_crypto,
1662                                         vif->prwise_crypto_len,
1663                                         vif->grp_crypto, vif->grp_crypto_len,
1664                                         vif->ssid_len, vif->ssid,
1665                                         vif->req_bssid, vif->ch_hint,
1666                                         ar->connect_ctrl_flags, SUBTYPE_NONE);
1667         set_bit(CONNECT_PEND, &vif->flags);
1668
1669         return 0;
1670 }
1671
1672 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1673                                       struct net_device *dev)
1674 {
1675         struct ath6kl_vif *vif = netdev_priv(dev);
1676
1677         if (!ath6kl_cfg80211_ready(vif))
1678                 return -EIO;
1679
1680         ath6kl_disconnect(vif);
1681         memset(vif->ssid, 0, sizeof(vif->ssid));
1682         vif->ssid_len = 0;
1683
1684         return 0;
1685 }
1686
1687 static const u32 cipher_suites[] = {
1688         WLAN_CIPHER_SUITE_WEP40,
1689         WLAN_CIPHER_SUITE_WEP104,
1690         WLAN_CIPHER_SUITE_TKIP,
1691         WLAN_CIPHER_SUITE_CCMP,
1692         CCKM_KRK_CIPHER_SUITE,
1693         WLAN_CIPHER_SUITE_SMS4,
1694 };
1695
1696 static bool is_rate_legacy(s32 rate)
1697 {
1698         static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1699                 6000, 9000, 12000, 18000, 24000,
1700                 36000, 48000, 54000
1701         };
1702         u8 i;
1703
1704         for (i = 0; i < ARRAY_SIZE(legacy); i++)
1705                 if (rate == legacy[i])
1706                         return true;
1707
1708         return false;
1709 }
1710
1711 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1712 {
1713         static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1714                 52000, 58500, 65000, 72200
1715         };
1716         u8 i;
1717
1718         for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1719                 if (rate == ht20[i]) {
1720                         if (i == ARRAY_SIZE(ht20) - 1)
1721                                 /* last rate uses sgi */
1722                                 *sgi = true;
1723                         else
1724                                 *sgi = false;
1725
1726                         *mcs = i;
1727                         return true;
1728                 }
1729         }
1730         return false;
1731 }
1732
1733 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1734 {
1735         static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1736                 81000, 108000, 121500, 135000,
1737                 150000
1738         };
1739         u8 i;
1740
1741         for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1742                 if (rate == ht40[i]) {
1743                         if (i == ARRAY_SIZE(ht40) - 1)
1744                                 /* last rate uses sgi */
1745                                 *sgi = true;
1746                         else
1747                                 *sgi = false;
1748
1749                         *mcs = i;
1750                         return true;
1751                 }
1752         }
1753
1754         return false;
1755 }
1756
1757 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1758                               u8 *mac, struct station_info *sinfo)
1759 {
1760         struct ath6kl *ar = ath6kl_priv(dev);
1761         struct ath6kl_vif *vif = netdev_priv(dev);
1762         long left;
1763         bool sgi;
1764         s32 rate;
1765         int ret;
1766         u8 mcs;
1767
1768         if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1769                 return -ENOENT;
1770
1771         if (down_interruptible(&ar->sem))
1772                 return -EBUSY;
1773
1774         set_bit(STATS_UPDATE_PEND, &vif->flags);
1775
1776         ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1777
1778         if (ret != 0) {
1779                 up(&ar->sem);
1780                 return -EIO;
1781         }
1782
1783         left = wait_event_interruptible_timeout(ar->event_wq,
1784                                                 !test_bit(STATS_UPDATE_PEND,
1785                                                           &vif->flags),
1786                                                 WMI_TIMEOUT);
1787
1788         up(&ar->sem);
1789
1790         if (left == 0)
1791                 return -ETIMEDOUT;
1792         else if (left < 0)
1793                 return left;
1794
1795         if (vif->target_stats.rx_byte) {
1796                 sinfo->rx_bytes = vif->target_stats.rx_byte;
1797                 sinfo->filled |= STATION_INFO_RX_BYTES;
1798                 sinfo->rx_packets = vif->target_stats.rx_pkt;
1799                 sinfo->filled |= STATION_INFO_RX_PACKETS;
1800         }
1801
1802         if (vif->target_stats.tx_byte) {
1803                 sinfo->tx_bytes = vif->target_stats.tx_byte;
1804                 sinfo->filled |= STATION_INFO_TX_BYTES;
1805                 sinfo->tx_packets = vif->target_stats.tx_pkt;
1806                 sinfo->filled |= STATION_INFO_TX_PACKETS;
1807         }
1808
1809         sinfo->signal = vif->target_stats.cs_rssi;
1810         sinfo->filled |= STATION_INFO_SIGNAL;
1811
1812         rate = vif->target_stats.tx_ucast_rate;
1813
1814         if (is_rate_legacy(rate)) {
1815                 sinfo->txrate.legacy = rate / 100;
1816         } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1817                 if (sgi) {
1818                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1819                         sinfo->txrate.mcs = mcs - 1;
1820                 } else {
1821                         sinfo->txrate.mcs = mcs;
1822                 }
1823
1824                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1825         } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1826                 if (sgi) {
1827                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1828                         sinfo->txrate.mcs = mcs - 1;
1829                 } else {
1830                         sinfo->txrate.mcs = mcs;
1831                 }
1832
1833                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
1834                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1835         } else {
1836                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1837                            "invalid rate from stats: %d\n", rate);
1838                 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1839                 return 0;
1840         }
1841
1842         sinfo->filled |= STATION_INFO_TX_BITRATE;
1843
1844         if (test_bit(CONNECTED, &vif->flags) &&
1845             test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1846             vif->nw_type == INFRA_NETWORK) {
1847                 sinfo->filled |= STATION_INFO_BSS_PARAM;
1848                 sinfo->bss_param.flags = 0;
1849                 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1850                 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1851         }
1852
1853         return 0;
1854 }
1855
1856 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1857                             struct cfg80211_pmksa *pmksa)
1858 {
1859         struct ath6kl *ar = ath6kl_priv(netdev);
1860         struct ath6kl_vif *vif = netdev_priv(netdev);
1861
1862         return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1863                                        pmksa->pmkid, true);
1864 }
1865
1866 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1867                             struct cfg80211_pmksa *pmksa)
1868 {
1869         struct ath6kl *ar = ath6kl_priv(netdev);
1870         struct ath6kl_vif *vif = netdev_priv(netdev);
1871
1872         return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1873                                        pmksa->pmkid, false);
1874 }
1875
1876 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1877 {
1878         struct ath6kl *ar = ath6kl_priv(netdev);
1879         struct ath6kl_vif *vif = netdev_priv(netdev);
1880
1881         if (test_bit(CONNECTED, &vif->flags))
1882                 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1883                                                vif->bssid, NULL, false);
1884         return 0;
1885 }
1886
1887 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1888                           struct cfg80211_wowlan *wow, u32 *filter)
1889 {
1890         int ret, pos;
1891         u8 mask[WOW_MASK_SIZE];
1892         u16 i;
1893
1894         /* Configure the patterns that we received from the user. */
1895         for (i = 0; i < wow->n_patterns; i++) {
1896
1897                 /*
1898                  * Convert given nl80211 specific mask value to equivalent
1899                  * driver specific mask value and send it to the chip along
1900                  * with patterns. For example, If the mask value defined in
1901                  * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1902                  * then equivalent driver specific mask value is
1903                  * "0xFF 0x00 0xFF 0x00".
1904                  */
1905                 memset(&mask, 0, sizeof(mask));
1906                 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1907                         if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1908                                 mask[pos] = 0xFF;
1909                 }
1910                 /*
1911                  * Note: Pattern's offset is not passed as part of wowlan
1912                  * parameter from CFG layer. So it's always passed as ZERO
1913                  * to the firmware. It means, given WOW patterns are always
1914                  * matched from the first byte of received pkt in the firmware.
1915                  */
1916                 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1917                                 vif->fw_vif_idx, WOW_LIST_ID,
1918                                 wow->patterns[i].pattern_len,
1919                                 0 /* pattern offset */,
1920                                 wow->patterns[i].pattern, mask);
1921                 if (ret)
1922                         return ret;
1923         }
1924
1925         if (wow->disconnect)
1926                 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1927
1928         if (wow->magic_pkt)
1929                 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1930
1931         if (wow->gtk_rekey_failure)
1932                 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1933
1934         if (wow->eap_identity_req)
1935                 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1936
1937         if (wow->four_way_handshake)
1938                 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1939
1940         return 0;
1941 }
1942
1943 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1944 {
1945         static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1946                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1947                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1948                 0x00, 0x08 };
1949         static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1950                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1951                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1952                 0x00, 0x7f };
1953         u8 unicst_offset = 0;
1954         static const u8 arp_pattern[] = { 0x08, 0x06 };
1955         static const u8 arp_mask[] = { 0xff, 0xff };
1956         u8 arp_offset = 20;
1957         static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1958         static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1959         u8 discvr_offset = 38;
1960         static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1961                 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1962                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1963                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1964                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1965                 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1966         static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1967                 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1968                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1969                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1970                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1971                 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1972         u8 dhcp_offset = 0;
1973         int ret;
1974
1975         /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1976         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1977                         vif->fw_vif_idx, WOW_LIST_ID,
1978                         sizeof(unicst_pattern), unicst_offset,
1979                         unicst_pattern, unicst_mask);
1980         if (ret) {
1981                 ath6kl_err("failed to add WOW unicast IP pattern\n");
1982                 return ret;
1983         }
1984
1985         /* Setup all ARP pkt pattern */
1986         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1987                         vif->fw_vif_idx, WOW_LIST_ID,
1988                         sizeof(arp_pattern), arp_offset,
1989                         arp_pattern, arp_mask);
1990         if (ret) {
1991                 ath6kl_err("failed to add WOW ARP pattern\n");
1992                 return ret;
1993         }
1994
1995         /*
1996          * Setup multicast pattern for mDNS 224.0.0.251,
1997          * SSDP 239.255.255.250 and LLMNR  224.0.0.252
1998          */
1999         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2000                         vif->fw_vif_idx, WOW_LIST_ID,
2001                         sizeof(discvr_pattern), discvr_offset,
2002                         discvr_pattern, discvr_mask);
2003         if (ret) {
2004                 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2005                 return ret;
2006         }
2007
2008         /* Setup all DHCP broadcast pkt pattern */
2009         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2010                         vif->fw_vif_idx, WOW_LIST_ID,
2011                         sizeof(dhcp_pattern), dhcp_offset,
2012                         dhcp_pattern, dhcp_mask);
2013         if (ret) {
2014                 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2015                 return ret;
2016         }
2017
2018         return 0;
2019 }
2020
2021 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2022 {
2023         struct net_device *ndev = vif->ndev;
2024         static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2025         static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2026         u8 discvr_offset = 38;
2027         u8 mac_mask[ETH_ALEN];
2028         int ret;
2029
2030         /* Setup unicast pkt pattern */
2031         memset(mac_mask, 0xff, ETH_ALEN);
2032         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2033                                 vif->fw_vif_idx, WOW_LIST_ID,
2034                                 ETH_ALEN, 0, ndev->dev_addr,
2035                                 mac_mask);
2036         if (ret) {
2037                 ath6kl_err("failed to add WOW unicast pattern\n");
2038                 return ret;
2039         }
2040
2041         /*
2042          * Setup multicast pattern for mDNS 224.0.0.251,
2043          * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2044          */
2045         if ((ndev->flags & IFF_ALLMULTI) ||
2046             (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2047                 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2048                                 vif->fw_vif_idx, WOW_LIST_ID,
2049                                 sizeof(discvr_pattern), discvr_offset,
2050                                 discvr_pattern, discvr_mask);
2051                 if (ret) {
2052                         ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2053                         return ret;
2054                 }
2055         }
2056
2057         return 0;
2058 }
2059
2060 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2061 {
2062         return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2063 }
2064
2065 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2066 {
2067         return !ar->tx_pending[ar->ctrl_ep];
2068 }
2069
2070 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2071 {
2072         int ret, left;
2073
2074         clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2075
2076         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2077                                                  ATH6KL_HOST_MODE_ASLEEP);
2078         if (ret)
2079                 return ret;
2080
2081         left = wait_event_interruptible_timeout(ar->event_wq,
2082                                                 is_hsleep_mode_procsed(vif),
2083                                                 WMI_TIMEOUT);
2084         if (left == 0) {
2085                 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2086                 ret = -ETIMEDOUT;
2087         } else if (left < 0) {
2088                 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2089                             left);
2090                 ret = left;
2091         }
2092
2093         if (ar->tx_pending[ar->ctrl_ep]) {
2094                 left = wait_event_interruptible_timeout(ar->event_wq,
2095                                                         is_ctrl_ep_empty(ar),
2096                                                         WMI_TIMEOUT);
2097                 if (left == 0) {
2098                         ath6kl_warn("clear wmi ctrl data timeout\n");
2099                         ret = -ETIMEDOUT;
2100                 } else if (left < 0) {
2101                         ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2102                         ret = left;
2103                 }
2104         }
2105
2106         return ret;
2107 }
2108
2109 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2110 {
2111         struct in_device *in_dev;
2112         struct in_ifaddr *ifa;
2113         struct ath6kl_vif *vif;
2114         int ret;
2115         u32 filter = 0;
2116         u16 i, bmiss_time;
2117         u8 index = 0;
2118         __be32 ips[MAX_IP_ADDRS];
2119
2120         /* The FW currently can't support multi-vif WoW properly. */
2121         if (ar->num_vif > 1)
2122                 return -EIO;
2123
2124         vif = ath6kl_vif_first(ar);
2125         if (!vif)
2126                 return -EIO;
2127
2128         if (!ath6kl_cfg80211_ready(vif))
2129                 return -EIO;
2130
2131         if (!test_bit(CONNECTED, &vif->flags))
2132                 return -ENOTCONN;
2133
2134         if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2135                 return -EINVAL;
2136
2137         if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2138             test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2139                      ar->fw_capabilities)) {
2140                 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2141                                                 vif->fw_vif_idx, false);
2142                 if (ret)
2143                         return ret;
2144         }
2145
2146         /* Clear existing WOW patterns */
2147         for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2148                 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2149                                                WOW_LIST_ID, i);
2150
2151         /*
2152          * Skip the default WOW pattern configuration
2153          * if the driver receives any WOW patterns from
2154          * the user.
2155          */
2156         if (wow)
2157                 ret = ath6kl_wow_usr(ar, vif, wow, &filter);
2158         else if (vif->nw_type == AP_NETWORK)
2159                 ret = ath6kl_wow_ap(ar, vif);
2160         else
2161                 ret = ath6kl_wow_sta(ar, vif);
2162
2163         if (ret)
2164                 return ret;
2165
2166         netif_stop_queue(vif->ndev);
2167
2168         if (vif->nw_type != AP_NETWORK) {
2169                 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2170                                                     ATH6KL_MAX_WOW_LISTEN_INTL,
2171                                                     0);
2172                 if (ret)
2173                         return ret;
2174
2175                 /* Set listen interval x 15 times as bmiss time */
2176                 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2177                 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2178                         bmiss_time = ATH6KL_MAX_BMISS_TIME;
2179
2180                 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2181                                                bmiss_time, 0);
2182                 if (ret)
2183                         return ret;
2184
2185                 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2186                                                 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2187                                                 0, 0, 0, 0);
2188                 if (ret)
2189                         return ret;
2190         }
2191
2192         ar->state = ATH6KL_STATE_SUSPENDING;
2193
2194         /* Setup own IP addr for ARP agent. */
2195         in_dev = __in_dev_get_rtnl(vif->ndev);
2196         if (!in_dev)
2197                 goto skip_arp;
2198
2199         ifa = in_dev->ifa_list;
2200         memset(&ips, 0, sizeof(ips));
2201
2202         /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2203         while (index < MAX_IP_ADDRS && ifa) {
2204                 ips[index] = ifa->ifa_local;
2205                 ifa = ifa->ifa_next;
2206                 index++;
2207         }
2208
2209         if (ifa) {
2210                 ath6kl_err("total IP addr count is exceeding fw limit\n");
2211                 return -EINVAL;
2212         }
2213
2214         ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2215         if (ret) {
2216                 ath6kl_err("fail to setup ip for arp agent\n");
2217                 return ret;
2218         }
2219
2220 skip_arp:
2221         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2222                                           ATH6KL_WOW_MODE_ENABLE,
2223                                           filter,
2224                                           WOW_HOST_REQ_DELAY);
2225         if (ret)
2226                 return ret;
2227
2228         ret = ath6kl_cfg80211_host_sleep(ar, vif);
2229         if (ret)
2230                 return ret;
2231
2232         return 0;
2233 }
2234
2235 static int ath6kl_wow_resume(struct ath6kl *ar)
2236 {
2237         struct ath6kl_vif *vif;
2238         int ret;
2239
2240         vif = ath6kl_vif_first(ar);
2241         if (!vif)
2242                 return -EIO;
2243
2244         ar->state = ATH6KL_STATE_RESUMING;
2245
2246         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2247                                                  ATH6KL_HOST_MODE_AWAKE);
2248         if (ret) {
2249                 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2250                             ret);
2251                 ar->state = ATH6KL_STATE_WOW;
2252                 return ret;
2253         }
2254
2255         if (vif->nw_type != AP_NETWORK) {
2256                 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2257                                                 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2258                 if (ret)
2259                         return ret;
2260
2261                 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2262                                                     vif->listen_intvl_t, 0);
2263                 if (ret)
2264                         return ret;
2265
2266                 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2267                                                vif->bmiss_time_t, 0);
2268                 if (ret)
2269                         return ret;
2270         }
2271
2272         ar->state = ATH6KL_STATE_ON;
2273
2274         if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2275             test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2276                      ar->fw_capabilities)) {
2277                 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2278                                         vif->fw_vif_idx, true);
2279                 if (ret)
2280                         return ret;
2281         }
2282
2283         netif_wake_queue(vif->ndev);
2284
2285         return 0;
2286 }
2287
2288 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2289 {
2290         struct ath6kl_vif *vif;
2291         int ret;
2292
2293         vif = ath6kl_vif_first(ar);
2294         if (!vif)
2295                 return -EIO;
2296
2297         if (!test_bit(WMI_READY, &ar->flag)) {
2298                 ath6kl_err("deepsleep failed as wmi is not ready\n");
2299                 return -EIO;
2300         }
2301
2302         ath6kl_cfg80211_stop_all(ar);
2303
2304         /* Save the current power mode before enabling power save */
2305         ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2306
2307         ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2308         if (ret)
2309                 return ret;
2310
2311         /* Disable WOW mode */
2312         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2313                                           ATH6KL_WOW_MODE_DISABLE,
2314                                           0, 0);
2315         if (ret)
2316                 return ret;
2317
2318         /* Flush all non control pkts in TX path */
2319         ath6kl_tx_data_cleanup(ar);
2320
2321         ret = ath6kl_cfg80211_host_sleep(ar, vif);
2322         if (ret)
2323                 return ret;
2324
2325         return 0;
2326 }
2327
2328 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2329 {
2330         struct ath6kl_vif *vif;
2331         int ret;
2332
2333         vif = ath6kl_vif_first(ar);
2334
2335         if (!vif)
2336                 return -EIO;
2337
2338         if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2339                 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2340                                                ar->wmi->saved_pwr_mode);
2341                 if (ret)
2342                         return ret;
2343         }
2344
2345         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2346                                                  ATH6KL_HOST_MODE_AWAKE);
2347         if (ret)
2348                 return ret;
2349
2350         ar->state = ATH6KL_STATE_ON;
2351
2352         /* Reset scan parameter to default values */
2353         ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2354                                         0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2355         if (ret)
2356                 return ret;
2357
2358         return 0;
2359 }
2360
2361 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2362                             enum ath6kl_cfg_suspend_mode mode,
2363                             struct cfg80211_wowlan *wow)
2364 {
2365         struct ath6kl_vif *vif;
2366         enum ath6kl_state prev_state;
2367         int ret;
2368
2369         switch (mode) {
2370         case ATH6KL_CFG_SUSPEND_WOW:
2371
2372                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2373
2374                 /* Flush all non control pkts in TX path */
2375                 ath6kl_tx_data_cleanup(ar);
2376
2377                 prev_state = ar->state;
2378
2379                 ret = ath6kl_wow_suspend(ar, wow);
2380                 if (ret) {
2381                         ar->state = prev_state;
2382                         return ret;
2383                 }
2384
2385                 ar->state = ATH6KL_STATE_WOW;
2386                 break;
2387
2388         case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2389
2390                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2391
2392                 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2393                 if (ret) {
2394                         ath6kl_err("deepsleep suspend failed: %d\n", ret);
2395                         return ret;
2396                 }
2397
2398                 ar->state = ATH6KL_STATE_DEEPSLEEP;
2399
2400                 break;
2401
2402         case ATH6KL_CFG_SUSPEND_CUTPOWER:
2403
2404                 ath6kl_cfg80211_stop_all(ar);
2405
2406                 if (ar->state == ATH6KL_STATE_OFF) {
2407                         ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2408                                    "suspend hw off, no action for cutpower\n");
2409                         break;
2410                 }
2411
2412                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2413
2414                 ret = ath6kl_init_hw_stop(ar);
2415                 if (ret) {
2416                         ath6kl_warn("failed to stop hw during suspend: %d\n",
2417                                     ret);
2418                 }
2419
2420                 ar->state = ATH6KL_STATE_CUTPOWER;
2421
2422                 break;
2423
2424         case ATH6KL_CFG_SUSPEND_SCHED_SCAN:
2425                 /*
2426                  * Nothing needed for schedule scan, firmware is already in
2427                  * wow mode and sleeping most of the time.
2428                  */
2429                 break;
2430
2431         default:
2432                 break;
2433         }
2434
2435         list_for_each_entry(vif, &ar->vif_list, list)
2436                 ath6kl_cfg80211_scan_complete_event(vif, true);
2437
2438         return 0;
2439 }
2440 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2441
2442 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2443 {
2444         int ret;
2445
2446         switch (ar->state) {
2447         case  ATH6KL_STATE_WOW:
2448                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2449
2450                 ret = ath6kl_wow_resume(ar);
2451                 if (ret) {
2452                         ath6kl_warn("wow mode resume failed: %d\n", ret);
2453                         return ret;
2454                 }
2455
2456                 break;
2457
2458         case ATH6KL_STATE_DEEPSLEEP:
2459                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2460
2461                 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2462                 if (ret) {
2463                         ath6kl_warn("deep sleep resume failed: %d\n", ret);
2464                         return ret;
2465                 }
2466                 break;
2467
2468         case ATH6KL_STATE_CUTPOWER:
2469                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2470
2471                 ret = ath6kl_init_hw_start(ar);
2472                 if (ret) {
2473                         ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2474                         return ret;
2475                 }
2476                 break;
2477
2478         case ATH6KL_STATE_SCHED_SCAN:
2479                 break;
2480
2481         default:
2482                 break;
2483         }
2484
2485         return 0;
2486 }
2487 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2488
2489 #ifdef CONFIG_PM
2490
2491 /* hif layer decides what suspend mode to use */
2492 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2493                                  struct cfg80211_wowlan *wow)
2494 {
2495         struct ath6kl *ar = wiphy_priv(wiphy);
2496
2497         return ath6kl_hif_suspend(ar, wow);
2498 }
2499
2500 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2501 {
2502         struct ath6kl *ar = wiphy_priv(wiphy);
2503
2504         return ath6kl_hif_resume(ar);
2505 }
2506
2507 /*
2508  * FIXME: WOW suspend mode is selected if the host sdio controller supports
2509  * both sdio irq wake up and keep power. The target pulls sdio data line to
2510  * wake up the host when WOW pattern matches. This causes sdio irq handler
2511  * is being called in the host side which internally hits ath6kl's RX path.
2512  *
2513  * Since sdio interrupt is not disabled, RX path executes even before
2514  * the host executes the actual resume operation from PM module.
2515  *
2516  * In the current scenario, WOW resume should happen before start processing
2517  * any data from the target. So It's required to perform WOW resume in RX path.
2518  * Ideally we should perform WOW resume only in the actual platform
2519  * resume path. This area needs bit rework to avoid WOW resume in RX path.
2520  *
2521  * ath6kl_check_wow_status() is called from ath6kl_rx().
2522  */
2523 void ath6kl_check_wow_status(struct ath6kl *ar)
2524 {
2525         if (ar->state == ATH6KL_STATE_SUSPENDING)
2526                 return;
2527
2528         if (ar->state == ATH6KL_STATE_WOW)
2529                 ath6kl_cfg80211_resume(ar);
2530 }
2531
2532 #else
2533
2534 void ath6kl_check_wow_status(struct ath6kl *ar)
2535 {
2536 }
2537 #endif
2538
2539 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum ieee80211_band band,
2540                             bool ht_enable)
2541 {
2542         struct ath6kl_htcap *htcap = &vif->htcap[band];
2543
2544         if (htcap->ht_enable == ht_enable)
2545                 return 0;
2546
2547         if (ht_enable) {
2548                 /* Set default ht capabilities */
2549                 htcap->ht_enable = true;
2550                 htcap->cap_info = (band == IEEE80211_BAND_2GHZ) ?
2551                                    ath6kl_g_htcap : ath6kl_a_htcap;
2552                 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2553         } else /* Disable ht */
2554                 memset(htcap, 0, sizeof(*htcap));
2555
2556         return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2557                                         band, htcap);
2558 }
2559
2560 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2561 {
2562         struct wiphy *wiphy = vif->ar->wiphy;
2563         int band, ret = 0;
2564
2565         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2566                 if (!wiphy->bands[band])
2567                         continue;
2568
2569                 ret = ath6kl_set_htcap(vif, band,
2570                                 wiphy->bands[band]->ht_cap.ht_supported);
2571                 if (ret)
2572                         return ret;
2573         }
2574
2575         return ret;
2576 }
2577
2578 static bool ath6kl_is_p2p_ie(const u8 *pos)
2579 {
2580         return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2581                 pos[2] == 0x50 && pos[3] == 0x6f &&
2582                 pos[4] == 0x9a && pos[5] == 0x09;
2583 }
2584
2585 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2586                                         const u8 *ies, size_t ies_len)
2587 {
2588         struct ath6kl *ar = vif->ar;
2589         const u8 *pos;
2590         u8 *buf = NULL;
2591         size_t len = 0;
2592         int ret;
2593
2594         /*
2595          * Filter out P2P IE(s) since they will be included depending on
2596          * the Probe Request frame in ath6kl_send_go_probe_resp().
2597          */
2598
2599         if (ies && ies_len) {
2600                 buf = kmalloc(ies_len, GFP_KERNEL);
2601                 if (buf == NULL)
2602                         return -ENOMEM;
2603                 pos = ies;
2604                 while (pos + 1 < ies + ies_len) {
2605                         if (pos + 2 + pos[1] > ies + ies_len)
2606                                 break;
2607                         if (!ath6kl_is_p2p_ie(pos)) {
2608                                 memcpy(buf + len, pos, 2 + pos[1]);
2609                                 len += 2 + pos[1];
2610                         }
2611                         pos += 2 + pos[1];
2612                 }
2613         }
2614
2615         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2616                                        WMI_FRAME_PROBE_RESP, buf, len);
2617         kfree(buf);
2618         return ret;
2619 }
2620
2621 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2622                           struct cfg80211_beacon_data *info)
2623 {
2624         struct ath6kl *ar = vif->ar;
2625         int res;
2626
2627         /* this also clears IE in fw if it's not set */
2628         res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2629                                        WMI_FRAME_BEACON,
2630                                        info->beacon_ies,
2631                                        info->beacon_ies_len);
2632         if (res)
2633                 return res;
2634
2635         /* this also clears IE in fw if it's not set */
2636         res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2637                                            info->proberesp_ies_len);
2638         if (res)
2639                 return res;
2640
2641         /* this also clears IE in fw if it's not set */
2642         res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2643                                        WMI_FRAME_ASSOC_RESP,
2644                                        info->assocresp_ies,
2645                                        info->assocresp_ies_len);
2646         if (res)
2647                 return res;
2648
2649         return 0;
2650 }
2651
2652 void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif, bool enable)
2653 {
2654         int err;
2655
2656         if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
2657                 return;
2658
2659         if (vif->nw_type != INFRA_NETWORK)
2660                 return;
2661
2662         if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
2663                       vif->ar->fw_capabilities))
2664                 return;
2665
2666         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
2667                    enable ? "enable" : "disable");
2668
2669         err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
2670                                                vif->fw_vif_idx, enable);
2671         if (err)
2672                 ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
2673                            enable ? "enable" : "disable", err);
2674 }
2675
2676 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2677                                 u8 *rsn_capab)
2678 {
2679         const u8 *rsn_ie;
2680         size_t rsn_ie_len;
2681         u16 cnt;
2682
2683         if (!beacon->tail)
2684                 return -EINVAL;
2685
2686         rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2687         if (!rsn_ie)
2688                 return -EINVAL;
2689
2690         rsn_ie_len = *(rsn_ie + 1);
2691         /* skip element id and length */
2692         rsn_ie += 2;
2693
2694         /* skip version */
2695         if (rsn_ie_len < 2)
2696                 return -EINVAL;
2697         rsn_ie +=  2;
2698         rsn_ie_len -= 2;
2699
2700         /* skip group cipher suite */
2701         if (rsn_ie_len < 4)
2702                 return 0;
2703         rsn_ie +=  4;
2704         rsn_ie_len -= 4;
2705
2706         /* skip pairwise cipher suite */
2707         if (rsn_ie_len < 2)
2708                 return 0;
2709         cnt = get_unaligned_le16(rsn_ie);
2710         rsn_ie += (2 + cnt * 4);
2711         rsn_ie_len -= (2 + cnt * 4);
2712
2713         /* skip akm suite */
2714         if (rsn_ie_len < 2)
2715                 return 0;
2716         cnt = get_unaligned_le16(rsn_ie);
2717         rsn_ie += (2 + cnt * 4);
2718         rsn_ie_len -= (2 + cnt * 4);
2719
2720         if (rsn_ie_len < 2)
2721                 return 0;
2722
2723         memcpy(rsn_capab, rsn_ie, 2);
2724
2725         return 0;
2726 }
2727
2728 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2729                            struct cfg80211_ap_settings *info)
2730 {
2731         struct ath6kl *ar = ath6kl_priv(dev);
2732         struct ath6kl_vif *vif = netdev_priv(dev);
2733         struct ieee80211_mgmt *mgmt;
2734         bool hidden = false;
2735         u8 *ies;
2736         int ies_len;
2737         struct wmi_connect_cmd p;
2738         int res;
2739         int i, ret;
2740         u16 rsn_capab = 0;
2741
2742         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2743
2744         if (!ath6kl_cfg80211_ready(vif))
2745                 return -EIO;
2746
2747         if (vif->next_mode != AP_NETWORK)
2748                 return -EOPNOTSUPP;
2749
2750         res = ath6kl_set_ies(vif, &info->beacon);
2751
2752         ar->ap_mode_bkey.valid = false;
2753
2754         /* TODO:
2755          * info->interval
2756          */
2757
2758         ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2759                                          info->dtim_period);
2760
2761         /* ignore error, just print a warning and continue normally */
2762         if (ret)
2763                 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2764
2765         if (info->beacon.head == NULL)
2766                 return -EINVAL;
2767         mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2768         ies = mgmt->u.beacon.variable;
2769         if (ies > info->beacon.head + info->beacon.head_len)
2770                 return -EINVAL;
2771         ies_len = info->beacon.head + info->beacon.head_len - ies;
2772
2773         if (info->ssid == NULL)
2774                 return -EINVAL;
2775         memcpy(vif->ssid, info->ssid, info->ssid_len);
2776         vif->ssid_len = info->ssid_len;
2777         if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2778                 hidden = true;
2779
2780         res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2781         if (res)
2782                 return res;
2783
2784         ret = ath6kl_set_auth_type(vif, info->auth_type);
2785         if (ret)
2786                 return ret;
2787
2788         memset(&p, 0, sizeof(p));
2789
2790         for (i = 0; i < info->crypto.n_akm_suites; i++) {
2791                 switch (info->crypto.akm_suites[i]) {
2792                 case WLAN_AKM_SUITE_8021X:
2793                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2794                                 p.auth_mode |= WPA_AUTH;
2795                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2796                                 p.auth_mode |= WPA2_AUTH;
2797                         break;
2798                 case WLAN_AKM_SUITE_PSK:
2799                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2800                                 p.auth_mode |= WPA_PSK_AUTH;
2801                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2802                                 p.auth_mode |= WPA2_PSK_AUTH;
2803                         break;
2804                 }
2805         }
2806         if (p.auth_mode == 0)
2807                 p.auth_mode = NONE_AUTH;
2808         vif->auth_mode = p.auth_mode;
2809
2810         for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2811                 switch (info->crypto.ciphers_pairwise[i]) {
2812                 case WLAN_CIPHER_SUITE_WEP40:
2813                 case WLAN_CIPHER_SUITE_WEP104:
2814                         p.prwise_crypto_type |= WEP_CRYPT;
2815                         break;
2816                 case WLAN_CIPHER_SUITE_TKIP:
2817                         p.prwise_crypto_type |= TKIP_CRYPT;
2818                         break;
2819                 case WLAN_CIPHER_SUITE_CCMP:
2820                         p.prwise_crypto_type |= AES_CRYPT;
2821                         break;
2822                 case WLAN_CIPHER_SUITE_SMS4:
2823                         p.prwise_crypto_type |= WAPI_CRYPT;
2824                         break;
2825                 }
2826         }
2827         if (p.prwise_crypto_type == 0) {
2828                 p.prwise_crypto_type = NONE_CRYPT;
2829                 ath6kl_set_cipher(vif, 0, true);
2830         } else if (info->crypto.n_ciphers_pairwise == 1)
2831                 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2832
2833         switch (info->crypto.cipher_group) {
2834         case WLAN_CIPHER_SUITE_WEP40:
2835         case WLAN_CIPHER_SUITE_WEP104:
2836                 p.grp_crypto_type = WEP_CRYPT;
2837                 break;
2838         case WLAN_CIPHER_SUITE_TKIP:
2839                 p.grp_crypto_type = TKIP_CRYPT;
2840                 break;
2841         case WLAN_CIPHER_SUITE_CCMP:
2842                 p.grp_crypto_type = AES_CRYPT;
2843                 break;
2844         case WLAN_CIPHER_SUITE_SMS4:
2845                 p.grp_crypto_type = WAPI_CRYPT;
2846                 break;
2847         default:
2848                 p.grp_crypto_type = NONE_CRYPT;
2849                 break;
2850         }
2851         ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2852
2853         p.nw_type = AP_NETWORK;
2854         vif->nw_type = vif->next_mode;
2855
2856         p.ssid_len = vif->ssid_len;
2857         memcpy(p.ssid, vif->ssid, vif->ssid_len);
2858         p.dot11_auth_mode = vif->dot11_auth_mode;
2859         p.ch = cpu_to_le16(info->channel->center_freq);
2860
2861         /* Enable uAPSD support by default */
2862         res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2863         if (res < 0)
2864                 return res;
2865
2866         if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2867                 p.nw_subtype = SUBTYPE_P2PGO;
2868         } else {
2869                 /*
2870                  * Due to firmware limitation, it is not possible to
2871                  * do P2P mgmt operations in AP mode
2872                  */
2873                 p.nw_subtype = SUBTYPE_NONE;
2874         }
2875
2876         if (info->inactivity_timeout) {
2877                 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2878                                                   info->inactivity_timeout);
2879                 if (res < 0)
2880                         return res;
2881         }
2882
2883         if (ath6kl_set_htcap(vif, info->channel->band,
2884                              info->channel_type != NL80211_CHAN_NO_HT))
2885                 return -EIO;
2886
2887         /*
2888          * Get the PTKSA replay counter in the RSN IE. Supplicant
2889          * will use the RSN IE in M3 message and firmware has to
2890          * advertise the same in beacon/probe response. Send
2891          * the complete RSN IE capability field to firmware
2892          */
2893         if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2894             test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2895                      ar->fw_capabilities)) {
2896                 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2897                                             WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2898                                             (const u8 *) &rsn_capab,
2899                                             sizeof(rsn_capab));
2900                 if (res < 0)
2901                         return res;
2902         }
2903
2904         memcpy(&vif->profile, &p, sizeof(p));
2905         res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2906         if (res < 0)
2907                 return res;
2908
2909         return 0;
2910 }
2911
2912 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2913                                 struct cfg80211_beacon_data *beacon)
2914 {
2915         struct ath6kl_vif *vif = netdev_priv(dev);
2916
2917         if (!ath6kl_cfg80211_ready(vif))
2918                 return -EIO;
2919
2920         if (vif->next_mode != AP_NETWORK)
2921                 return -EOPNOTSUPP;
2922
2923         return ath6kl_set_ies(vif, beacon);
2924 }
2925
2926 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2927 {
2928         struct ath6kl *ar = ath6kl_priv(dev);
2929         struct ath6kl_vif *vif = netdev_priv(dev);
2930
2931         if (vif->nw_type != AP_NETWORK)
2932                 return -EOPNOTSUPP;
2933         if (!test_bit(CONNECTED, &vif->flags))
2934                 return -ENOTCONN;
2935
2936         ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2937         clear_bit(CONNECTED, &vif->flags);
2938
2939         /* Restore ht setting in firmware */
2940         return ath6kl_restore_htcap(vif);
2941 }
2942
2943 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2944
2945 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2946                               u8 *mac)
2947 {
2948         struct ath6kl *ar = ath6kl_priv(dev);
2949         struct ath6kl_vif *vif = netdev_priv(dev);
2950         const u8 *addr = mac ? mac : bcast_addr;
2951
2952         return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2953                                       addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2954 }
2955
2956 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
2957                                  u8 *mac, struct station_parameters *params)
2958 {
2959         struct ath6kl *ar = ath6kl_priv(dev);
2960         struct ath6kl_vif *vif = netdev_priv(dev);
2961
2962         if (vif->nw_type != AP_NETWORK)
2963                 return -EOPNOTSUPP;
2964
2965         /* Use this only for authorizing/unauthorizing a station */
2966         if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
2967                 return -EOPNOTSUPP;
2968
2969         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
2970                 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
2971                                               WMI_AP_MLME_AUTHORIZE, mac, 0);
2972         return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
2973                                       WMI_AP_MLME_UNAUTHORIZE, mac, 0);
2974 }
2975
2976 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
2977                                     struct wireless_dev *wdev,
2978                                     struct ieee80211_channel *chan,
2979                                     enum nl80211_channel_type channel_type,
2980                                     unsigned int duration,
2981                                     u64 *cookie)
2982 {
2983         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
2984         struct ath6kl *ar = ath6kl_priv(vif->ndev);
2985         u32 id;
2986
2987         /* TODO: if already pending or ongoing remain-on-channel,
2988          * return -EBUSY */
2989         id = ++vif->last_roc_id;
2990         if (id == 0) {
2991                 /* Do not use 0 as the cookie value */
2992                 id = ++vif->last_roc_id;
2993         }
2994         *cookie = id;
2995
2996         return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
2997                                              chan->center_freq, duration);
2998 }
2999
3000 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3001                                            struct wireless_dev *wdev,
3002                                            u64 cookie)
3003 {
3004         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3005         struct ath6kl *ar = ath6kl_priv(vif->ndev);
3006
3007         if (cookie != vif->last_roc_id)
3008                 return -ENOENT;
3009         vif->last_cancel_roc_id = cookie;
3010
3011         return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3012 }
3013
3014 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3015                                      const u8 *buf, size_t len,
3016                                      unsigned int freq)
3017 {
3018         struct ath6kl *ar = vif->ar;
3019         const u8 *pos;
3020         u8 *p2p;
3021         int p2p_len;
3022         int ret;
3023         const struct ieee80211_mgmt *mgmt;
3024
3025         mgmt = (const struct ieee80211_mgmt *) buf;
3026
3027         /* Include P2P IE(s) from the frame generated in user space. */
3028
3029         p2p = kmalloc(len, GFP_KERNEL);
3030         if (p2p == NULL)
3031                 return -ENOMEM;
3032         p2p_len = 0;
3033
3034         pos = mgmt->u.probe_resp.variable;
3035         while (pos + 1 < buf + len) {
3036                 if (pos + 2 + pos[1] > buf + len)
3037                         break;
3038                 if (ath6kl_is_p2p_ie(pos)) {
3039                         memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3040                         p2p_len += 2 + pos[1];
3041                 }
3042                 pos += 2 + pos[1];
3043         }
3044
3045         ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
3046                                                  mgmt->da, p2p, p2p_len);
3047         kfree(p2p);
3048         return ret;
3049 }
3050
3051 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
3052                                      u32 id,
3053                                      u32 freq,
3054                                      u32 wait,
3055                                      const u8 *buf,
3056                                      size_t len,
3057                                      bool *more_data,
3058                                      bool no_cck)
3059 {
3060         struct ieee80211_mgmt *mgmt;
3061         struct ath6kl_sta *conn;
3062         bool is_psq_empty = false;
3063         struct ath6kl_mgmt_buff *mgmt_buf;
3064         size_t mgmt_buf_size;
3065         struct ath6kl *ar = vif->ar;
3066
3067         mgmt = (struct ieee80211_mgmt *) buf;
3068         if (is_multicast_ether_addr(mgmt->da))
3069                 return false;
3070
3071         conn = ath6kl_find_sta(vif, mgmt->da);
3072         if (!conn)
3073                 return false;
3074
3075         if (conn->sta_flags & STA_PS_SLEEP) {
3076                 if (!(conn->sta_flags & STA_PS_POLLED)) {
3077                         /* Queue the frames if the STA is sleeping */
3078                         mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3079                         mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3080                         if (!mgmt_buf)
3081                                 return false;
3082
3083                         INIT_LIST_HEAD(&mgmt_buf->list);
3084                         mgmt_buf->id = id;
3085                         mgmt_buf->freq = freq;
3086                         mgmt_buf->wait = wait;
3087                         mgmt_buf->len = len;
3088                         mgmt_buf->no_cck = no_cck;
3089                         memcpy(mgmt_buf->buf, buf, len);
3090                         spin_lock_bh(&conn->psq_lock);
3091                         is_psq_empty = skb_queue_empty(&conn->psq) &&
3092                                         (conn->mgmt_psq_len == 0);
3093                         list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3094                         conn->mgmt_psq_len++;
3095                         spin_unlock_bh(&conn->psq_lock);
3096
3097                         /*
3098                          * If this is the first pkt getting queued
3099                          * for this STA, update the PVB for this
3100                          * STA.
3101                          */
3102                         if (is_psq_empty)
3103                                 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3104                                                        conn->aid, 1);
3105                         return true;
3106                 }
3107
3108                 /*
3109                  * This tx is because of a PsPoll.
3110                  * Determine if MoreData bit has to be set.
3111                  */
3112                 spin_lock_bh(&conn->psq_lock);
3113                 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3114                         *more_data = true;
3115                 spin_unlock_bh(&conn->psq_lock);
3116         }
3117
3118         return false;
3119 }
3120
3121 /* Check if SSID length is greater than DIRECT- */
3122 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3123 {
3124         const struct ieee80211_mgmt *mgmt;
3125         mgmt = (const struct ieee80211_mgmt *) buf;
3126
3127         /* variable[1] contains the SSID tag length */
3128         if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3129             (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3130                 return true;
3131         }
3132
3133         return false;
3134 }
3135
3136 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
3137                           struct ieee80211_channel *chan, bool offchan,
3138                           enum nl80211_channel_type channel_type,
3139                           bool channel_type_valid, unsigned int wait,
3140                           const u8 *buf, size_t len, bool no_cck,
3141                           bool dont_wait_for_ack, u64 *cookie)
3142 {
3143         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3144         struct ath6kl *ar = ath6kl_priv(vif->ndev);
3145         u32 id;
3146         const struct ieee80211_mgmt *mgmt;
3147         bool more_data, queued;
3148
3149         mgmt = (const struct ieee80211_mgmt *) buf;
3150         if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3151             ieee80211_is_probe_resp(mgmt->frame_control) &&
3152             ath6kl_is_p2p_go_ssid(buf, len)) {
3153                 /*
3154                  * Send Probe Response frame in GO mode using a separate WMI
3155                  * command to allow the target to fill in the generic IEs.
3156                  */
3157                 *cookie = 0; /* TX status not supported */
3158                 return ath6kl_send_go_probe_resp(vif, buf, len,
3159                                                  chan->center_freq);
3160         }
3161
3162         id = vif->send_action_id++;
3163         if (id == 0) {
3164                 /*
3165                  * 0 is a reserved value in the WMI command and shall not be
3166                  * used for the command.
3167                  */
3168                 id = vif->send_action_id++;
3169         }
3170
3171         *cookie = id;
3172
3173         /* AP mode Power saving processing */
3174         if (vif->nw_type == AP_NETWORK) {
3175                 queued = ath6kl_mgmt_powersave_ap(vif,
3176                                         id, chan->center_freq,
3177                                         wait, buf,
3178                                         len, &more_data, no_cck);
3179                 if (queued)
3180                         return 0;
3181         }
3182
3183         return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id,
3184                                         chan->center_freq, wait,
3185                                         buf, len, no_cck);
3186 }
3187
3188 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3189                                        struct wireless_dev *wdev,
3190                                        u16 frame_type, bool reg)
3191 {
3192         struct ath6kl_vif *vif = ath6kl_vif_from_wdev(wdev);
3193
3194         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3195                    __func__, frame_type, reg);
3196         if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3197                 /*
3198                  * Note: This notification callback is not allowed to sleep, so
3199                  * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3200                  * hardcode target to report Probe Request frames all the time.
3201                  */
3202                 vif->probe_req_report = reg;
3203         }
3204 }
3205
3206 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3207                         struct net_device *dev,
3208                         struct cfg80211_sched_scan_request *request)
3209 {
3210         struct ath6kl *ar = ath6kl_priv(dev);
3211         struct ath6kl_vif *vif = netdev_priv(dev);
3212         u16 interval;
3213         int ret;
3214
3215         if (ar->state != ATH6KL_STATE_ON)
3216                 return -EIO;
3217
3218         if (vif->sme_state != SME_DISCONNECTED)
3219                 return -EBUSY;
3220
3221         /* The FW currently can't support multi-vif WoW properly. */
3222         if (ar->num_vif > 1)
3223                 return -EIO;
3224
3225         ath6kl_cfg80211_scan_complete_event(vif, true);
3226
3227         ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3228                                       request->n_ssids,
3229                                       request->match_sets,
3230                                       request->n_match_sets);
3231         if (ret < 0)
3232                 return ret;
3233
3234         if (!request->n_match_sets) {
3235                 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3236                                                ALL_BSS_FILTER, 0);
3237                 if (ret < 0)
3238                         return ret;
3239         } else {
3240                  ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3241                                                 MATCHED_SSID_FILTER, 0);
3242                 if (ret < 0)
3243                         return ret;
3244         }
3245
3246         /* fw uses seconds, also make sure that it's >0 */
3247         interval = max_t(u16, 1, request->interval / 1000);
3248
3249         ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3250                                   interval, interval,
3251                                   vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3252
3253         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
3254                                           ATH6KL_WOW_MODE_ENABLE,
3255                                           WOW_FILTER_SSID,
3256                                           WOW_HOST_REQ_DELAY);
3257         if (ret) {
3258                 ath6kl_warn("Failed to enable wow with ssid filter: %d\n", ret);
3259                 return ret;
3260         }
3261
3262         /* this also clears IE in fw if it's not set */
3263         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3264                                        WMI_FRAME_PROBE_REQ,
3265                                        request->ie, request->ie_len);
3266         if (ret) {
3267                 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n",
3268                             ret);
3269                 return ret;
3270         }
3271
3272         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
3273                                                  ATH6KL_HOST_MODE_ASLEEP);
3274         if (ret) {
3275                 ath6kl_warn("Failed to enable host sleep mode for sched scan: %d\n",
3276                             ret);
3277                 return ret;
3278         }
3279
3280         ar->state = ATH6KL_STATE_SCHED_SCAN;
3281
3282         return ret;
3283 }
3284
3285 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3286                                       struct net_device *dev)
3287 {
3288         struct ath6kl_vif *vif = netdev_priv(dev);
3289         bool stopped;
3290
3291         stopped = __ath6kl_cfg80211_sscan_stop(vif);
3292
3293         if (!stopped)
3294                 return -EIO;
3295
3296         return 0;
3297 }
3298
3299 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy,
3300                                        struct net_device *dev,
3301                                        const u8 *addr,
3302                                        const struct cfg80211_bitrate_mask *mask)
3303 {
3304         struct ath6kl *ar = ath6kl_priv(dev);
3305         struct ath6kl_vif *vif = netdev_priv(dev);
3306
3307         return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx,
3308                                            mask);
3309 }
3310
3311 static const struct ieee80211_txrx_stypes
3312 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3313         [NL80211_IFTYPE_STATION] = {
3314                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3315                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3316                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3317                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3318         },
3319         [NL80211_IFTYPE_AP] = {
3320                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3321                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3322                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3323                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3324         },
3325         [NL80211_IFTYPE_P2P_CLIENT] = {
3326                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3327                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3328                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3329                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3330         },
3331         [NL80211_IFTYPE_P2P_GO] = {
3332                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3333                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3334                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3335                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3336         },
3337 };
3338
3339 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3340         .add_virtual_intf = ath6kl_cfg80211_add_iface,
3341         .del_virtual_intf = ath6kl_cfg80211_del_iface,
3342         .change_virtual_intf = ath6kl_cfg80211_change_iface,
3343         .scan = ath6kl_cfg80211_scan,
3344         .connect = ath6kl_cfg80211_connect,
3345         .disconnect = ath6kl_cfg80211_disconnect,
3346         .add_key = ath6kl_cfg80211_add_key,
3347         .get_key = ath6kl_cfg80211_get_key,
3348         .del_key = ath6kl_cfg80211_del_key,
3349         .set_default_key = ath6kl_cfg80211_set_default_key,
3350         .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3351         .set_tx_power = ath6kl_cfg80211_set_txpower,
3352         .get_tx_power = ath6kl_cfg80211_get_txpower,
3353         .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3354         .join_ibss = ath6kl_cfg80211_join_ibss,
3355         .leave_ibss = ath6kl_cfg80211_leave_ibss,
3356         .get_station = ath6kl_get_station,
3357         .set_pmksa = ath6kl_set_pmksa,
3358         .del_pmksa = ath6kl_del_pmksa,
3359         .flush_pmksa = ath6kl_flush_pmksa,
3360         CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3361 #ifdef CONFIG_PM
3362         .suspend = __ath6kl_cfg80211_suspend,
3363         .resume = __ath6kl_cfg80211_resume,
3364 #endif
3365         .start_ap = ath6kl_start_ap,
3366         .change_beacon = ath6kl_change_beacon,
3367         .stop_ap = ath6kl_stop_ap,
3368         .del_station = ath6kl_del_station,
3369         .change_station = ath6kl_change_station,
3370         .remain_on_channel = ath6kl_remain_on_channel,
3371         .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3372         .mgmt_tx = ath6kl_mgmt_tx,
3373         .mgmt_frame_register = ath6kl_mgmt_frame_register,
3374         .sched_scan_start = ath6kl_cfg80211_sscan_start,
3375         .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3376         .set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
3377 };
3378
3379 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3380 {
3381         ath6kl_cfg80211_sscan_disable(vif);
3382
3383         switch (vif->sme_state) {
3384         case SME_DISCONNECTED:
3385                 break;
3386         case SME_CONNECTING:
3387                 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3388                                         NULL, 0,
3389                                         WLAN_STATUS_UNSPECIFIED_FAILURE,
3390                                         GFP_KERNEL);
3391                 break;
3392         case SME_CONNECTED:
3393                 cfg80211_disconnected(vif->ndev, 0, NULL, 0, GFP_KERNEL);
3394                 break;
3395         }
3396
3397         if (test_bit(CONNECTED, &vif->flags) ||
3398             test_bit(CONNECT_PEND, &vif->flags))
3399                 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3400
3401         vif->sme_state = SME_DISCONNECTED;
3402         clear_bit(CONNECTED, &vif->flags);
3403         clear_bit(CONNECT_PEND, &vif->flags);
3404
3405         /* disable scanning */
3406         if (ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3407                                       0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3408                 ath6kl_warn("failed to disable scan during stop\n");
3409
3410         ath6kl_cfg80211_scan_complete_event(vif, true);
3411 }
3412
3413 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3414 {
3415         struct ath6kl_vif *vif;
3416
3417         vif = ath6kl_vif_first(ar);
3418         if (!vif) {
3419                 /* save the current power mode before enabling power save */
3420                 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3421
3422                 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3423                         ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3424                 return;
3425         }
3426
3427         /*
3428          * FIXME: we should take ar->list_lock to protect changes in the
3429          * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3430          * sleeps.
3431          */
3432         list_for_each_entry(vif, &ar->vif_list, list)
3433                 ath6kl_cfg80211_stop(vif);
3434 }
3435
3436 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3437 {
3438         vif->aggr_cntxt = aggr_init(vif);
3439         if (!vif->aggr_cntxt) {
3440                 ath6kl_err("failed to initialize aggr\n");
3441                 return -ENOMEM;
3442         }
3443
3444         setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3445                     (unsigned long) vif->ndev);
3446         setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3447                     (unsigned long) vif);
3448
3449         set_bit(WMM_ENABLED, &vif->flags);
3450         spin_lock_init(&vif->if_lock);
3451
3452         INIT_LIST_HEAD(&vif->mc_filter);
3453
3454         return 0;
3455 }
3456
3457 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3458 {
3459         struct ath6kl *ar = vif->ar;
3460         struct ath6kl_mc_filter *mc_filter, *tmp;
3461
3462         aggr_module_destroy(vif->aggr_cntxt);
3463
3464         ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3465
3466         if (vif->nw_type == ADHOC_NETWORK)
3467                 ar->ibss_if_active = false;
3468
3469         list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3470                 list_del(&mc_filter->list);
3471                 kfree(mc_filter);
3472         }
3473
3474         unregister_netdevice(vif->ndev);
3475
3476         ar->num_vif--;
3477 }
3478
3479 struct wireless_dev *ath6kl_interface_add(struct ath6kl *ar, const char *name,
3480                                           enum nl80211_iftype type,
3481                                           u8 fw_vif_idx, u8 nw_type)
3482 {
3483         struct net_device *ndev;
3484         struct ath6kl_vif *vif;
3485
3486         ndev = alloc_netdev(sizeof(*vif), name, ether_setup);
3487         if (!ndev)
3488                 return NULL;
3489
3490         vif = netdev_priv(ndev);
3491         ndev->ieee80211_ptr = &vif->wdev;
3492         vif->wdev.wiphy = ar->wiphy;
3493         vif->ar = ar;
3494         vif->ndev = ndev;
3495         SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3496         vif->wdev.netdev = ndev;
3497         vif->wdev.iftype = type;
3498         vif->fw_vif_idx = fw_vif_idx;
3499         vif->nw_type = nw_type;
3500         vif->next_mode = nw_type;
3501         vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3502         vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3503         vif->bg_scan_period = 0;
3504         vif->htcap[IEEE80211_BAND_2GHZ].ht_enable = true;
3505         vif->htcap[IEEE80211_BAND_5GHZ].ht_enable = true;
3506
3507         memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3508         if (fw_vif_idx != 0)
3509                 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3510                                      0x2;
3511
3512         init_netdev(ndev);
3513
3514         ath6kl_init_control_info(vif);
3515
3516         if (ath6kl_cfg80211_vif_init(vif))
3517                 goto err;
3518
3519         if (register_netdevice(ndev))
3520                 goto err;
3521
3522         ar->avail_idx_map &= ~BIT(fw_vif_idx);
3523         vif->sme_state = SME_DISCONNECTED;
3524         set_bit(WLAN_ENABLED, &vif->flags);
3525         ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3526         set_bit(NETDEV_REGISTERED, &vif->flags);
3527
3528         if (type == NL80211_IFTYPE_ADHOC)
3529                 ar->ibss_if_active = true;
3530
3531         spin_lock_bh(&ar->list_lock);
3532         list_add_tail(&vif->list, &ar->vif_list);
3533         spin_unlock_bh(&ar->list_lock);
3534
3535         return &vif->wdev;
3536
3537 err:
3538         aggr_module_destroy(vif->aggr_cntxt);
3539         free_netdev(ndev);
3540         return NULL;
3541 }
3542
3543 int ath6kl_cfg80211_init(struct ath6kl *ar)
3544 {
3545         struct wiphy *wiphy = ar->wiphy;
3546         bool band_2gig = false, band_5gig = false, ht = false;
3547         int ret;
3548
3549         wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3550
3551         wiphy->max_remain_on_channel_duration = 5000;
3552
3553         /* set device pointer for wiphy */
3554         set_wiphy_dev(wiphy, ar->dev);
3555
3556         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3557                                  BIT(NL80211_IFTYPE_ADHOC) |
3558                                  BIT(NL80211_IFTYPE_AP);
3559         if (ar->p2p) {
3560                 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3561                                           BIT(NL80211_IFTYPE_P2P_CLIENT);
3562         }
3563
3564         /* max num of ssids that can be probed during scanning */
3565         wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3566
3567         /* max num of ssids that can be matched after scan */
3568         if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST,
3569                      ar->fw_capabilities))
3570                 wiphy->max_match_sets = MAX_PROBED_SSIDS;
3571
3572         wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3573         switch (ar->hw.cap) {
3574         case WMI_11AN_CAP:
3575                 ht = true;
3576         case WMI_11A_CAP:
3577                 band_5gig = true;
3578                 break;
3579         case WMI_11GN_CAP:
3580                 ht = true;
3581         case WMI_11G_CAP:
3582                 band_2gig = true;
3583                 break;
3584         case WMI_11AGN_CAP:
3585                 ht = true;
3586         case WMI_11AG_CAP:
3587                 band_2gig = true;
3588                 band_5gig = true;
3589                 break;
3590         default:
3591                 ath6kl_err("invalid phy capability!\n");
3592                 return -EINVAL;
3593         }
3594
3595         /*
3596          * Even if the fw has HT support, advertise HT cap only when
3597          * the firmware has support to override RSN capability, otherwise
3598          * 4-way handshake would fail.
3599          */
3600         if (!(ht &&
3601               test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3602                        ar->fw_capabilities))) {
3603                 ath6kl_band_2ghz.ht_cap.cap = 0;
3604                 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3605                 ath6kl_band_5ghz.ht_cap.cap = 0;
3606                 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3607         }
3608
3609         if (ar->hw.flags & ATH6KL_HW_FLAG_64BIT_RATES) {
3610                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3611                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3612                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3613                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3614         } else {
3615                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3616                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3617         }
3618
3619         if (band_2gig)
3620                 wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3621         if (band_5gig)
3622                 wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3623
3624         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3625
3626         wiphy->cipher_suites = cipher_suites;
3627         wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3628
3629 #ifdef CONFIG_PM
3630         wiphy->wowlan.flags = WIPHY_WOWLAN_MAGIC_PKT |
3631                               WIPHY_WOWLAN_DISCONNECT |
3632                               WIPHY_WOWLAN_GTK_REKEY_FAILURE  |
3633                               WIPHY_WOWLAN_SUPPORTS_GTK_REKEY |
3634                               WIPHY_WOWLAN_EAP_IDENTITY_REQ   |
3635                               WIPHY_WOWLAN_4WAY_HANDSHAKE;
3636         wiphy->wowlan.n_patterns = WOW_MAX_FILTERS_PER_LIST;
3637         wiphy->wowlan.pattern_min_len = 1;
3638         wiphy->wowlan.pattern_max_len = WOW_PATTERN_SIZE;
3639 #endif
3640
3641         wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3642
3643         ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3644                             WIPHY_FLAG_HAVE_AP_SME |
3645                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3646                             WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3647
3648         if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN, ar->fw_capabilities))
3649                 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
3650
3651         if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3652                      ar->fw_capabilities))
3653                 ar->wiphy->features |= NL80211_FEATURE_INACTIVITY_TIMER;
3654
3655         ar->wiphy->probe_resp_offload =
3656                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3657                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3658                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3659
3660         ret = wiphy_register(wiphy);
3661         if (ret < 0) {
3662                 ath6kl_err("couldn't register wiphy device\n");
3663                 return ret;
3664         }
3665
3666         ar->wiphy_registered = true;
3667
3668         return 0;
3669 }
3670
3671 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
3672 {
3673         wiphy_unregister(ar->wiphy);
3674
3675         ar->wiphy_registered = false;
3676 }
3677
3678 struct ath6kl *ath6kl_cfg80211_create(void)
3679 {
3680         struct ath6kl *ar;
3681         struct wiphy *wiphy;
3682
3683         /* create a new wiphy for use with cfg80211 */
3684         wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
3685
3686         if (!wiphy) {
3687                 ath6kl_err("couldn't allocate wiphy device\n");
3688                 return NULL;
3689         }
3690
3691         ar = wiphy_priv(wiphy);
3692         ar->wiphy = wiphy;
3693
3694         return ar;
3695 }
3696
3697 /* Note: ar variable must not be accessed after calling this! */
3698 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
3699 {
3700         int i;
3701
3702         for (i = 0; i < AP_MAX_NUM_STA; i++)
3703                 kfree(ar->sta_list[i].aggr_conn);
3704
3705         wiphy_free(ar->wiphy);
3706 }
3707