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_WPA && 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, struct net_device *ndev,
 970                                 struct cfg80211_scan_request *request)
 971 {
 972         struct ath6kl *ar = ath6kl_priv(ndev);
 973         struct ath6kl_vif *vif = netdev_priv(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 /*
1388  * The type nl80211_tx_power_setting replaces the following
1389  * data type from 2.6.36 onwards
1390 */
1391 static int ath6kl_cfg80211_set_txpower(struct wiphy *wiphy,
1392                                        enum nl80211_tx_power_setting type,
1393                                        int mbm)
1394 {
1395         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1396         struct ath6kl_vif *vif;
1397         int dbm = MBM_TO_DBM(mbm);
1398
1399         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x, dbm %d\n", __func__,
1400                    type, dbm);
1401
1402         vif = ath6kl_vif_first(ar);
1403         if (!vif)
1404                 return -EIO;
1405
1406         if (!ath6kl_cfg80211_ready(vif))
1407                 return -EIO;
1408
1409         switch (type) {
1410         case NL80211_TX_POWER_AUTOMATIC:
1411                 return 0;
1412         case NL80211_TX_POWER_LIMITED:
1413                 ar->tx_pwr = dbm;
1414                 break;
1415         default:
1416                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type 0x%x not supported\n",
1417                            __func__, type);
1418                 return -EOPNOTSUPP;
1419         }
1420
1421         ath6kl_wmi_set_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx, dbm);
1422
1423         return 0;
1424 }
1425
1426 static int ath6kl_cfg80211_get_txpower(struct wiphy *wiphy, int *dbm)
1427 {
1428         struct ath6kl *ar = (struct ath6kl *)wiphy_priv(wiphy);
1429         struct ath6kl_vif *vif;
1430
1431         vif = ath6kl_vif_first(ar);
1432         if (!vif)
1433                 return -EIO;
1434
1435         if (!ath6kl_cfg80211_ready(vif))
1436                 return -EIO;
1437
1438         if (test_bit(CONNECTED, &vif->flags)) {
1439                 ar->tx_pwr = 0;
1440
1441                 if (ath6kl_wmi_get_tx_pwr_cmd(ar->wmi, vif->fw_vif_idx) != 0) {
1442                         ath6kl_err("ath6kl_wmi_get_tx_pwr_cmd failed\n");
1443                         return -EIO;
1444                 }
1445
1446                 wait_event_interruptible_timeout(ar->event_wq, ar->tx_pwr != 0,
1447                                                  5 * HZ);
1448
1449                 if (signal_pending(current)) {
1450                         ath6kl_err("target did not respond\n");
1451                         return -EINTR;
1452                 }
1453         }
1454
1455         *dbm = ar->tx_pwr;
1456         return 0;
1457 }
1458
1459 static int ath6kl_cfg80211_set_power_mgmt(struct wiphy *wiphy,
1460                                           struct net_device *dev,
1461                                           bool pmgmt, int timeout)
1462 {
1463         struct ath6kl *ar = ath6kl_priv(dev);
1464         struct wmi_power_mode_cmd mode;
1465         struct ath6kl_vif *vif = netdev_priv(dev);
1466
1467         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: pmgmt %d, timeout %d\n",
1468                    __func__, pmgmt, timeout);
1469
1470         if (!ath6kl_cfg80211_ready(vif))
1471                 return -EIO;
1472
1473         if (pmgmt) {
1474                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: max perf\n", __func__);
1475                 mode.pwr_mode = REC_POWER;
1476         } else {
1477                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: rec power\n", __func__);
1478                 mode.pwr_mode = MAX_PERF_POWER;
1479         }
1480
1481         if (ath6kl_wmi_powermode_cmd(ar->wmi, vif->fw_vif_idx,
1482                                      mode.pwr_mode) != 0) {
1483                 ath6kl_err("wmi_powermode_cmd failed\n");
1484                 return -EIO;
1485         }
1486
1487         return 0;
1488 }
1489
1490 static struct net_device *ath6kl_cfg80211_add_iface(struct wiphy *wiphy,
1491                                                     char *name,
1492                                                     enum nl80211_iftype type,
1493                                                     u32 *flags,
1494                                                     struct vif_params *params)
1495 {
1496         struct ath6kl *ar = wiphy_priv(wiphy);
1497         struct net_device *ndev;
1498         u8 if_idx, nw_type;
1499
1500         if (ar->num_vif == ar->vif_max) {
1501                 ath6kl_err("Reached maximum number of supported vif\n");
1502                 return ERR_PTR(-EINVAL);
1503         }
1504
1505         if (!ath6kl_is_valid_iftype(ar, type, &if_idx, &nw_type)) {
1506                 ath6kl_err("Not a supported interface type\n");
1507                 return ERR_PTR(-EINVAL);
1508         }
1509
1510         ndev = ath6kl_interface_add(ar, name, type, if_idx, nw_type);
1511         if (!ndev)
1512                 return ERR_PTR(-ENOMEM);
1513
1514         ar->num_vif++;
1515
1516         return ndev;
1517 }
1518
1519 static int ath6kl_cfg80211_del_iface(struct wiphy *wiphy,
1520                                      struct net_device *ndev)
1521 {
1522         struct ath6kl *ar = wiphy_priv(wiphy);
1523         struct ath6kl_vif *vif = netdev_priv(ndev);
1524
1525         spin_lock_bh(&ar->list_lock);
1526         list_del(&vif->list);
1527         spin_unlock_bh(&ar->list_lock);
1528
1529         ath6kl_cleanup_vif(vif, test_bit(WMI_READY, &ar->flag));
1530
1531         ath6kl_cfg80211_vif_cleanup(vif);
1532
1533         return 0;
1534 }
1535
1536 static int ath6kl_cfg80211_change_iface(struct wiphy *wiphy,
1537                                         struct net_device *ndev,
1538                                         enum nl80211_iftype type, u32 *flags,
1539                                         struct vif_params *params)
1540 {
1541         struct ath6kl_vif *vif = netdev_priv(ndev);
1542         int i;
1543
1544         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: type %u\n", __func__, type);
1545
1546         /*
1547          * Don't bring up p2p on an interface which is not initialized
1548          * for p2p operation where fw does not have capability to switch
1549          * dynamically between non-p2p and p2p type interface.
1550          */
1551         if (!test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
1552                       vif->ar->fw_capabilities) &&
1553             (type == NL80211_IFTYPE_P2P_CLIENT ||
1554              type == NL80211_IFTYPE_P2P_GO)) {
1555                 if (vif->ar->vif_max == 1) {
1556                         if (vif->fw_vif_idx != 0)
1557                                 return -EINVAL;
1558                         else
1559                                 goto set_iface_type;
1560                 }
1561
1562                 for (i = vif->ar->max_norm_iface; i < vif->ar->vif_max; i++) {
1563                         if (i == vif->fw_vif_idx)
1564                                 break;
1565                 }
1566
1567                 if (i == vif->ar->vif_max) {
1568                         ath6kl_err("Invalid interface to bring up P2P\n");
1569                         return -EINVAL;
1570                 }
1571         }
1572
1573         /* need to clean up enhanced bmiss detection fw state */
1574         ath6kl_cfg80211_sta_bmiss_enhance(vif, false);
1575
1576 set_iface_type:
1577         switch (type) {
1578         case NL80211_IFTYPE_STATION:
1579                 vif->next_mode = INFRA_NETWORK;
1580                 break;
1581         case NL80211_IFTYPE_ADHOC:
1582                 vif->next_mode = ADHOC_NETWORK;
1583                 break;
1584         case NL80211_IFTYPE_AP:
1585                 vif->next_mode = AP_NETWORK;
1586                 break;
1587         case NL80211_IFTYPE_P2P_CLIENT:
1588                 vif->next_mode = INFRA_NETWORK;
1589                 break;
1590         case NL80211_IFTYPE_P2P_GO:
1591                 vif->next_mode = AP_NETWORK;
1592                 break;
1593         default:
1594                 ath6kl_err("invalid interface type %u\n", type);
1595                 return -EOPNOTSUPP;
1596         }
1597
1598         vif->wdev.iftype = type;
1599
1600         return 0;
1601 }
1602
1603 static int ath6kl_cfg80211_join_ibss(struct wiphy *wiphy,
1604                                      struct net_device *dev,
1605                                      struct cfg80211_ibss_params *ibss_param)
1606 {
1607         struct ath6kl *ar = ath6kl_priv(dev);
1608         struct ath6kl_vif *vif = netdev_priv(dev);
1609         int status;
1610
1611         if (!ath6kl_cfg80211_ready(vif))
1612                 return -EIO;
1613
1614         vif->ssid_len = ibss_param->ssid_len;
1615         memcpy(vif->ssid, ibss_param->ssid, vif->ssid_len);
1616
1617         if (ibss_param->channel)
1618                 vif->ch_hint = ibss_param->channel->center_freq;
1619
1620         if (ibss_param->channel_fixed) {
1621                 /*
1622                  * TODO: channel_fixed: The channel should be fixed, do not
1623                  * search for IBSSs to join on other channels. Target
1624                  * firmware does not support this feature, needs to be
1625                  * updated.
1626                  */
1627                 return -EOPNOTSUPP;
1628         }
1629
1630         memset(vif->req_bssid, 0, sizeof(vif->req_bssid));
1631         if (ibss_param->bssid && !is_broadcast_ether_addr(ibss_param->bssid))
1632                 memcpy(vif->req_bssid, ibss_param->bssid,
1633                        sizeof(vif->req_bssid));
1634
1635         ath6kl_set_wpa_version(vif, 0);
1636
1637         status = ath6kl_set_auth_type(vif, NL80211_AUTHTYPE_OPEN_SYSTEM);
1638         if (status)
1639                 return status;
1640
1641         if (ibss_param->privacy) {
1642                 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, true);
1643                 ath6kl_set_cipher(vif, WLAN_CIPHER_SUITE_WEP40, false);
1644         } else {
1645                 ath6kl_set_cipher(vif, 0, true);
1646                 ath6kl_set_cipher(vif, 0, false);
1647         }
1648
1649         vif->nw_type = vif->next_mode;
1650
1651         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1652                    "%s: connect called with authmode %d dot11 auth %d"
1653                    " PW crypto %d PW crypto len %d GRP crypto %d"
1654                    " GRP crypto len %d channel hint %u\n",
1655                    __func__,
1656                    vif->auth_mode, vif->dot11_auth_mode, vif->prwise_crypto,
1657                    vif->prwise_crypto_len, vif->grp_crypto,
1658                    vif->grp_crypto_len, vif->ch_hint);
1659
1660         status = ath6kl_wmi_connect_cmd(ar->wmi, vif->fw_vif_idx, vif->nw_type,
1661                                         vif->dot11_auth_mode, vif->auth_mode,
1662                                         vif->prwise_crypto,
1663                                         vif->prwise_crypto_len,
1664                                         vif->grp_crypto, vif->grp_crypto_len,
1665                                         vif->ssid_len, vif->ssid,
1666                                         vif->req_bssid, vif->ch_hint,
1667                                         ar->connect_ctrl_flags, SUBTYPE_NONE);
1668         set_bit(CONNECT_PEND, &vif->flags);
1669
1670         return 0;
1671 }
1672
1673 static int ath6kl_cfg80211_leave_ibss(struct wiphy *wiphy,
1674                                       struct net_device *dev)
1675 {
1676         struct ath6kl_vif *vif = netdev_priv(dev);
1677
1678         if (!ath6kl_cfg80211_ready(vif))
1679                 return -EIO;
1680
1681         ath6kl_disconnect(vif);
1682         memset(vif->ssid, 0, sizeof(vif->ssid));
1683         vif->ssid_len = 0;
1684
1685         return 0;
1686 }
1687
1688 static const u32 cipher_suites[] = {
1689         WLAN_CIPHER_SUITE_WEP40,
1690         WLAN_CIPHER_SUITE_WEP104,
1691         WLAN_CIPHER_SUITE_TKIP,
1692         WLAN_CIPHER_SUITE_CCMP,
1693         CCKM_KRK_CIPHER_SUITE,
1694         WLAN_CIPHER_SUITE_SMS4,
1695 };
1696
1697 static bool is_rate_legacy(s32 rate)
1698 {
1699         static const s32 legacy[] = { 1000, 2000, 5500, 11000,
1700                 6000, 9000, 12000, 18000, 24000,
1701                 36000, 48000, 54000
1702         };
1703         u8 i;
1704
1705         for (i = 0; i < ARRAY_SIZE(legacy); i++)
1706                 if (rate == legacy[i])
1707                         return true;
1708
1709         return false;
1710 }
1711
1712 static bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)
1713 {
1714         static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,
1715                 52000, 58500, 65000, 72200
1716         };
1717         u8 i;
1718
1719         for (i = 0; i < ARRAY_SIZE(ht20); i++) {
1720                 if (rate == ht20[i]) {
1721                         if (i == ARRAY_SIZE(ht20) - 1)
1722                                 /* last rate uses sgi */
1723                                 *sgi = true;
1724                         else
1725                                 *sgi = false;
1726
1727                         *mcs = i;
1728                         return true;
1729                 }
1730         }
1731         return false;
1732 }
1733
1734 static bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)
1735 {
1736         static const s32 ht40[] = { 13500, 27000, 40500, 54000,
1737                 81000, 108000, 121500, 135000,
1738                 150000
1739         };
1740         u8 i;
1741
1742         for (i = 0; i < ARRAY_SIZE(ht40); i++) {
1743                 if (rate == ht40[i]) {
1744                         if (i == ARRAY_SIZE(ht40) - 1)
1745                                 /* last rate uses sgi */
1746                                 *sgi = true;
1747                         else
1748                                 *sgi = false;
1749
1750                         *mcs = i;
1751                         return true;
1752                 }
1753         }
1754
1755         return false;
1756 }
1757
1758 static int ath6kl_get_station(struct wiphy *wiphy, struct net_device *dev,
1759                               u8 *mac, struct station_info *sinfo)
1760 {
1761         struct ath6kl *ar = ath6kl_priv(dev);
1762         struct ath6kl_vif *vif = netdev_priv(dev);
1763         long left;
1764         bool sgi;
1765         s32 rate;
1766         int ret;
1767         u8 mcs;
1768
1769         if (memcmp(mac, vif->bssid, ETH_ALEN) != 0)
1770                 return -ENOENT;
1771
1772         if (down_interruptible(&ar->sem))
1773                 return -EBUSY;
1774
1775         set_bit(STATS_UPDATE_PEND, &vif->flags);
1776
1777         ret = ath6kl_wmi_get_stats_cmd(ar->wmi, vif->fw_vif_idx);
1778
1779         if (ret != 0) {
1780                 up(&ar->sem);
1781                 return -EIO;
1782         }
1783
1784         left = wait_event_interruptible_timeout(ar->event_wq,
1785                                                 !test_bit(STATS_UPDATE_PEND,
1786                                                           &vif->flags),
1787                                                 WMI_TIMEOUT);
1788
1789         up(&ar->sem);
1790
1791         if (left == 0)
1792                 return -ETIMEDOUT;
1793         else if (left < 0)
1794                 return left;
1795
1796         if (vif->target_stats.rx_byte) {
1797                 sinfo->rx_bytes = vif->target_stats.rx_byte;
1798                 sinfo->filled |= STATION_INFO_RX_BYTES;
1799                 sinfo->rx_packets = vif->target_stats.rx_pkt;
1800                 sinfo->filled |= STATION_INFO_RX_PACKETS;
1801         }
1802
1803         if (vif->target_stats.tx_byte) {
1804                 sinfo->tx_bytes = vif->target_stats.tx_byte;
1805                 sinfo->filled |= STATION_INFO_TX_BYTES;
1806                 sinfo->tx_packets = vif->target_stats.tx_pkt;
1807                 sinfo->filled |= STATION_INFO_TX_PACKETS;
1808         }
1809
1810         sinfo->signal = vif->target_stats.cs_rssi;
1811         sinfo->filled |= STATION_INFO_SIGNAL;
1812
1813         rate = vif->target_stats.tx_ucast_rate;
1814
1815         if (is_rate_legacy(rate)) {
1816                 sinfo->txrate.legacy = rate / 100;
1817         } else if (is_rate_ht20(rate, &mcs, &sgi)) {
1818                 if (sgi) {
1819                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1820                         sinfo->txrate.mcs = mcs - 1;
1821                 } else {
1822                         sinfo->txrate.mcs = mcs;
1823                 }
1824
1825                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1826         } else if (is_rate_ht40(rate, &mcs, &sgi)) {
1827                 if (sgi) {
1828                         sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
1829                         sinfo->txrate.mcs = mcs - 1;
1830                 } else {
1831                         sinfo->txrate.mcs = mcs;
1832                 }
1833
1834                 sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
1835                 sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
1836         } else {
1837                 ath6kl_dbg(ATH6KL_DBG_WLAN_CFG,
1838                            "invalid rate from stats: %d\n", rate);
1839                 ath6kl_debug_war(ar, ATH6KL_WAR_INVALID_RATE);
1840                 return 0;
1841         }
1842
1843         sinfo->filled |= STATION_INFO_TX_BITRATE;
1844
1845         if (test_bit(CONNECTED, &vif->flags) &&
1846             test_bit(DTIM_PERIOD_AVAIL, &vif->flags) &&
1847             vif->nw_type == INFRA_NETWORK) {
1848                 sinfo->filled |= STATION_INFO_BSS_PARAM;
1849                 sinfo->bss_param.flags = 0;
1850                 sinfo->bss_param.dtim_period = vif->assoc_bss_dtim_period;
1851                 sinfo->bss_param.beacon_interval = vif->assoc_bss_beacon_int;
1852         }
1853
1854         return 0;
1855 }
1856
1857 static int ath6kl_set_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1858                             struct cfg80211_pmksa *pmksa)
1859 {
1860         struct ath6kl *ar = ath6kl_priv(netdev);
1861         struct ath6kl_vif *vif = netdev_priv(netdev);
1862
1863         return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1864                                        pmksa->pmkid, true);
1865 }
1866
1867 static int ath6kl_del_pmksa(struct wiphy *wiphy, struct net_device *netdev,
1868                             struct cfg80211_pmksa *pmksa)
1869 {
1870         struct ath6kl *ar = ath6kl_priv(netdev);
1871         struct ath6kl_vif *vif = netdev_priv(netdev);
1872
1873         return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx, pmksa->bssid,
1874                                        pmksa->pmkid, false);
1875 }
1876
1877 static int ath6kl_flush_pmksa(struct wiphy *wiphy, struct net_device *netdev)
1878 {
1879         struct ath6kl *ar = ath6kl_priv(netdev);
1880         struct ath6kl_vif *vif = netdev_priv(netdev);
1881
1882         if (test_bit(CONNECTED, &vif->flags))
1883                 return ath6kl_wmi_setpmkid_cmd(ar->wmi, vif->fw_vif_idx,
1884                                                vif->bssid, NULL, false);
1885         return 0;
1886 }
1887
1888 static int ath6kl_wow_usr(struct ath6kl *ar, struct ath6kl_vif *vif,
1889                           struct cfg80211_wowlan *wow, u32 *filter)
1890 {
1891         int ret, pos;
1892         u8 mask[WOW_MASK_SIZE];
1893         u16 i;
1894
1895         /* Configure the patterns that we received from the user. */
1896         for (i = 0; i < wow->n_patterns; i++) {
1897
1898                 /*
1899                  * Convert given nl80211 specific mask value to equivalent
1900                  * driver specific mask value and send it to the chip along
1901                  * with patterns. For example, If the mask value defined in
1902                  * struct cfg80211_wowlan is 0xA (equivalent binary is 1010),
1903                  * then equivalent driver specific mask value is
1904                  * "0xFF 0x00 0xFF 0x00".
1905                  */
1906                 memset(&mask, 0, sizeof(mask));
1907                 for (pos = 0; pos < wow->patterns[i].pattern_len; pos++) {
1908                         if (wow->patterns[i].mask[pos / 8] & (0x1 << (pos % 8)))
1909                                 mask[pos] = 0xFF;
1910                 }
1911                 /*
1912                  * Note: Pattern's offset is not passed as part of wowlan
1913                  * parameter from CFG layer. So it's always passed as ZERO
1914                  * to the firmware. It means, given WOW patterns are always
1915                  * matched from the first byte of received pkt in the firmware.
1916                  */
1917                 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1918                                 vif->fw_vif_idx, WOW_LIST_ID,
1919                                 wow->patterns[i].pattern_len,
1920                                 0 /* pattern offset */,
1921                                 wow->patterns[i].pattern, mask);
1922                 if (ret)
1923                         return ret;
1924         }
1925
1926         if (wow->disconnect)
1927                 *filter |= WOW_FILTER_OPTION_NWK_DISASSOC;
1928
1929         if (wow->magic_pkt)
1930                 *filter |= WOW_FILTER_OPTION_MAGIC_PACKET;
1931
1932         if (wow->gtk_rekey_failure)
1933                 *filter |= WOW_FILTER_OPTION_GTK_ERROR;
1934
1935         if (wow->eap_identity_req)
1936                 *filter |= WOW_FILTER_OPTION_EAP_REQ;
1937
1938         if (wow->four_way_handshake)
1939                 *filter |= WOW_FILTER_OPTION_8021X_4WAYHS;
1940
1941         return 0;
1942 }
1943
1944 static int ath6kl_wow_ap(struct ath6kl *ar, struct ath6kl_vif *vif)
1945 {
1946         static const u8 unicst_pattern[] = { 0x00, 0x00, 0x00,
1947                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1948                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1949                 0x00, 0x08 };
1950         static const u8 unicst_mask[] = { 0x01, 0x00, 0x00,
1951                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1952                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1953                 0x00, 0x7f };
1954         u8 unicst_offset = 0;
1955         static const u8 arp_pattern[] = { 0x08, 0x06 };
1956         static const u8 arp_mask[] = { 0xff, 0xff };
1957         u8 arp_offset = 20;
1958         static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
1959         static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
1960         u8 discvr_offset = 38;
1961         static const u8 dhcp_pattern[] = { 0xff, 0xff, 0xff, 0xff,
1962                 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1963                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 0x00,
1964                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1965                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1966                 0x00, 0x00, 0x00, 0x00, 0x00, 0x43 /* port 67 */ };
1967         static const u8 dhcp_mask[] = { 0xff, 0xff, 0xff, 0xff,
1968                 0xff, 0xff, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1969                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xff, 0xff,
1970                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1971                 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
1972                 0x00, 0x00, 0x00, 0x00, 0xff, 0xff /* port 67 */ };
1973         u8 dhcp_offset = 0;
1974         int ret;
1975
1976         /* Setup unicast IP, EAPOL-like and ARP pkt pattern */
1977         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1978                         vif->fw_vif_idx, WOW_LIST_ID,
1979                         sizeof(unicst_pattern), unicst_offset,
1980                         unicst_pattern, unicst_mask);
1981         if (ret) {
1982                 ath6kl_err("failed to add WOW unicast IP pattern\n");
1983                 return ret;
1984         }
1985
1986         /* Setup all ARP pkt pattern */
1987         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
1988                         vif->fw_vif_idx, WOW_LIST_ID,
1989                         sizeof(arp_pattern), arp_offset,
1990                         arp_pattern, arp_mask);
1991         if (ret) {
1992                 ath6kl_err("failed to add WOW ARP pattern\n");
1993                 return ret;
1994         }
1995
1996         /*
1997          * Setup multicast pattern for mDNS 224.0.0.251,
1998          * SSDP 239.255.255.250 and LLMNR  224.0.0.252
1999          */
2000         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2001                         vif->fw_vif_idx, WOW_LIST_ID,
2002                         sizeof(discvr_pattern), discvr_offset,
2003                         discvr_pattern, discvr_mask);
2004         if (ret) {
2005                 ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2006                 return ret;
2007         }
2008
2009         /* Setup all DHCP broadcast pkt pattern */
2010         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2011                         vif->fw_vif_idx, WOW_LIST_ID,
2012                         sizeof(dhcp_pattern), dhcp_offset,
2013                         dhcp_pattern, dhcp_mask);
2014         if (ret) {
2015                 ath6kl_err("failed to add WOW DHCP broadcast pattern\n");
2016                 return ret;
2017         }
2018
2019         return 0;
2020 }
2021
2022 static int ath6kl_wow_sta(struct ath6kl *ar, struct ath6kl_vif *vif)
2023 {
2024         struct net_device *ndev = vif->ndev;
2025         static const u8 discvr_pattern[] = { 0xe0, 0x00, 0x00, 0xf8 };
2026         static const u8 discvr_mask[] = { 0xf0, 0x00, 0x00, 0xf8 };
2027         u8 discvr_offset = 38;
2028         u8 mac_mask[ETH_ALEN];
2029         int ret;
2030
2031         /* Setup unicast pkt pattern */
2032         memset(mac_mask, 0xff, ETH_ALEN);
2033         ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2034                                 vif->fw_vif_idx, WOW_LIST_ID,
2035                                 ETH_ALEN, 0, ndev->dev_addr,
2036                                 mac_mask);
2037         if (ret) {
2038                 ath6kl_err("failed to add WOW unicast pattern\n");
2039                 return ret;
2040         }
2041
2042         /*
2043          * Setup multicast pattern for mDNS 224.0.0.251,
2044          * SSDP 239.255.255.250 and LLMNR 224.0.0.252
2045          */
2046         if ((ndev->flags & IFF_ALLMULTI) ||
2047             (ndev->flags & IFF_MULTICAST && netdev_mc_count(ndev) > 0)) {
2048                 ret = ath6kl_wmi_add_wow_pattern_cmd(ar->wmi,
2049                                 vif->fw_vif_idx, WOW_LIST_ID,
2050                                 sizeof(discvr_pattern), discvr_offset,
2051                                 discvr_pattern, discvr_mask);
2052                 if (ret) {
2053                         ath6kl_err("failed to add WOW mDNS/SSDP/LLMNR pattern\n");
2054                         return ret;
2055                 }
2056         }
2057
2058         return 0;
2059 }
2060
2061 static int is_hsleep_mode_procsed(struct ath6kl_vif *vif)
2062 {
2063         return test_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2064 }
2065
2066 static bool is_ctrl_ep_empty(struct ath6kl *ar)
2067 {
2068         return !ar->tx_pending[ar->ctrl_ep];
2069 }
2070
2071 static int ath6kl_cfg80211_host_sleep(struct ath6kl *ar, struct ath6kl_vif *vif)
2072 {
2073         int ret, left;
2074
2075         clear_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
2076
2077         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2078                                                  ATH6KL_HOST_MODE_ASLEEP);
2079         if (ret)
2080                 return ret;
2081
2082         left = wait_event_interruptible_timeout(ar->event_wq,
2083                                                 is_hsleep_mode_procsed(vif),
2084                                                 WMI_TIMEOUT);
2085         if (left == 0) {
2086                 ath6kl_warn("timeout, didn't get host sleep cmd processed event\n");
2087                 ret = -ETIMEDOUT;
2088         } else if (left < 0) {
2089                 ath6kl_warn("error while waiting for host sleep cmd processed event %d\n",
2090                             left);
2091                 ret = left;
2092         }
2093
2094         if (ar->tx_pending[ar->ctrl_ep]) {
2095                 left = wait_event_interruptible_timeout(ar->event_wq,
2096                                                         is_ctrl_ep_empty(ar),
2097                                                         WMI_TIMEOUT);
2098                 if (left == 0) {
2099                         ath6kl_warn("clear wmi ctrl data timeout\n");
2100                         ret = -ETIMEDOUT;
2101                 } else if (left < 0) {
2102                         ath6kl_warn("clear wmi ctrl data failed: %d\n", left);
2103                         ret = left;
2104                 }
2105         }
2106
2107         return ret;
2108 }
2109
2110 static int ath6kl_wow_suspend(struct ath6kl *ar, struct cfg80211_wowlan *wow)
2111 {
2112         struct in_device *in_dev;
2113         struct in_ifaddr *ifa;
2114         struct ath6kl_vif *vif;
2115         int ret;
2116         u32 filter = 0;
2117         u16 i, bmiss_time;
2118         u8 index = 0;
2119         __be32 ips[MAX_IP_ADDRS];
2120
2121         /* The FW currently can't support multi-vif WoW properly. */
2122         if (ar->num_vif > 1)
2123                 return -EIO;
2124
2125         vif = ath6kl_vif_first(ar);
2126         if (!vif)
2127                 return -EIO;
2128
2129         if (!ath6kl_cfg80211_ready(vif))
2130                 return -EIO;
2131
2132         if (!test_bit(CONNECTED, &vif->flags))
2133                 return -ENOTCONN;
2134
2135         if (wow && (wow->n_patterns > WOW_MAX_FILTERS_PER_LIST))
2136                 return -EINVAL;
2137
2138         if (!test_bit(NETDEV_MCAST_ALL_ON, &vif->flags) &&
2139             test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2140                      ar->fw_capabilities)) {
2141                 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2142                                                 vif->fw_vif_idx, false);
2143                 if (ret)
2144                         return ret;
2145         }
2146
2147         /* Clear existing WOW patterns */
2148         for (i = 0; i < WOW_MAX_FILTERS_PER_LIST; i++)
2149                 ath6kl_wmi_del_wow_pattern_cmd(ar->wmi, vif->fw_vif_idx,
2150                                                WOW_LIST_ID, i);
2151
2152         /*
2153          * Skip the default WOW pattern configuration
2154          * if the driver receives any WOW patterns from
2155          * the user.
2156          */
2157         if (wow)
2158                 ret = ath6kl_wow_usr(ar, vif, wow, &filter);
2159         else if (vif->nw_type == AP_NETWORK)
2160                 ret = ath6kl_wow_ap(ar, vif);
2161         else
2162                 ret = ath6kl_wow_sta(ar, vif);
2163
2164         if (ret)
2165                 return ret;
2166
2167         netif_stop_queue(vif->ndev);
2168
2169         if (vif->nw_type != AP_NETWORK) {
2170                 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2171                                                     ATH6KL_MAX_WOW_LISTEN_INTL,
2172                                                     0);
2173                 if (ret)
2174                         return ret;
2175
2176                 /* Set listen interval x 15 times as bmiss time */
2177                 bmiss_time = ATH6KL_MAX_WOW_LISTEN_INTL * 15;
2178                 if (bmiss_time > ATH6KL_MAX_BMISS_TIME)
2179                         bmiss_time = ATH6KL_MAX_BMISS_TIME;
2180
2181                 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2182                                                bmiss_time, 0);
2183                 if (ret)
2184                         return ret;
2185
2186                 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2187                                                 0xFFFF, 0, 0xFFFF, 0, 0, 0,
2188                                                 0, 0, 0, 0);
2189                 if (ret)
2190                         return ret;
2191         }
2192
2193         ar->state = ATH6KL_STATE_SUSPENDING;
2194
2195         /* Setup own IP addr for ARP agent. */
2196         in_dev = __in_dev_get_rtnl(vif->ndev);
2197         if (!in_dev)
2198                 goto skip_arp;
2199
2200         ifa = in_dev->ifa_list;
2201         memset(&ips, 0, sizeof(ips));
2202
2203         /* Configure IP addr only if IP address count < MAX_IP_ADDRS */
2204         while (index < MAX_IP_ADDRS && ifa) {
2205                 ips[index] = ifa->ifa_local;
2206                 ifa = ifa->ifa_next;
2207                 index++;
2208         }
2209
2210         if (ifa) {
2211                 ath6kl_err("total IP addr count is exceeding fw limit\n");
2212                 return -EINVAL;
2213         }
2214
2215         ret = ath6kl_wmi_set_ip_cmd(ar->wmi, vif->fw_vif_idx, ips[0], ips[1]);
2216         if (ret) {
2217                 ath6kl_err("fail to setup ip for arp agent\n");
2218                 return ret;
2219         }
2220
2221 skip_arp:
2222         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2223                                           ATH6KL_WOW_MODE_ENABLE,
2224                                           filter,
2225                                           WOW_HOST_REQ_DELAY);
2226         if (ret)
2227                 return ret;
2228
2229         ret = ath6kl_cfg80211_host_sleep(ar, vif);
2230         if (ret)
2231                 return ret;
2232
2233         return 0;
2234 }
2235
2236 static int ath6kl_wow_resume(struct ath6kl *ar)
2237 {
2238         struct ath6kl_vif *vif;
2239         int ret;
2240
2241         vif = ath6kl_vif_first(ar);
2242         if (!vif)
2243                 return -EIO;
2244
2245         ar->state = ATH6KL_STATE_RESUMING;
2246
2247         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2248                                                  ATH6KL_HOST_MODE_AWAKE);
2249         if (ret) {
2250                 ath6kl_warn("Failed to configure host sleep mode for wow resume: %d\n",
2251                             ret);
2252                 ar->state = ATH6KL_STATE_WOW;
2253                 return ret;
2254         }
2255
2256         if (vif->nw_type != AP_NETWORK) {
2257                 ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2258                                                 0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2259                 if (ret)
2260                         return ret;
2261
2262                 ret = ath6kl_wmi_listeninterval_cmd(ar->wmi, vif->fw_vif_idx,
2263                                                     vif->listen_intvl_t, 0);
2264                 if (ret)
2265                         return ret;
2266
2267                 ret = ath6kl_wmi_bmisstime_cmd(ar->wmi, vif->fw_vif_idx,
2268                                                vif->bmiss_time_t, 0);
2269                 if (ret)
2270                         return ret;
2271         }
2272
2273         ar->state = ATH6KL_STATE_ON;
2274
2275         if (!test_bit(NETDEV_MCAST_ALL_OFF, &vif->flags) &&
2276             test_bit(ATH6KL_FW_CAPABILITY_WOW_MULTICAST_FILTER,
2277                      ar->fw_capabilities)) {
2278                 ret = ath6kl_wmi_mcast_filter_cmd(vif->ar->wmi,
2279                                         vif->fw_vif_idx, true);
2280                 if (ret)
2281                         return ret;
2282         }
2283
2284         netif_wake_queue(vif->ndev);
2285
2286         return 0;
2287 }
2288
2289 static int ath6kl_cfg80211_deepsleep_suspend(struct ath6kl *ar)
2290 {
2291         struct ath6kl_vif *vif;
2292         int ret;
2293
2294         vif = ath6kl_vif_first(ar);
2295         if (!vif)
2296                 return -EIO;
2297
2298         if (!test_bit(WMI_READY, &ar->flag)) {
2299                 ath6kl_err("deepsleep failed as wmi is not ready\n");
2300                 return -EIO;
2301         }
2302
2303         ath6kl_cfg80211_stop_all(ar);
2304
2305         /* Save the current power mode before enabling power save */
2306         ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
2307
2308         ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER);
2309         if (ret)
2310                 return ret;
2311
2312         /* Disable WOW mode */
2313         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
2314                                           ATH6KL_WOW_MODE_DISABLE,
2315                                           0, 0);
2316         if (ret)
2317                 return ret;
2318
2319         /* Flush all non control pkts in TX path */
2320         ath6kl_tx_data_cleanup(ar);
2321
2322         ret = ath6kl_cfg80211_host_sleep(ar, vif);
2323         if (ret)
2324                 return ret;
2325
2326         return 0;
2327 }
2328
2329 static int ath6kl_cfg80211_deepsleep_resume(struct ath6kl *ar)
2330 {
2331         struct ath6kl_vif *vif;
2332         int ret;
2333
2334         vif = ath6kl_vif_first(ar);
2335
2336         if (!vif)
2337                 return -EIO;
2338
2339         if (ar->wmi->pwr_mode != ar->wmi->saved_pwr_mode) {
2340                 ret = ath6kl_wmi_powermode_cmd(ar->wmi, 0,
2341                                                ar->wmi->saved_pwr_mode);
2342                 if (ret)
2343                         return ret;
2344         }
2345
2346         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
2347                                                  ATH6KL_HOST_MODE_AWAKE);
2348         if (ret)
2349                 return ret;
2350
2351         ar->state = ATH6KL_STATE_ON;
2352
2353         /* Reset scan parameter to default values */
2354         ret = ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
2355                                         0, 0, 0, 0, 0, 0, 3, 0, 0, 0);
2356         if (ret)
2357                 return ret;
2358
2359         return 0;
2360 }
2361
2362 int ath6kl_cfg80211_suspend(struct ath6kl *ar,
2363                             enum ath6kl_cfg_suspend_mode mode,
2364                             struct cfg80211_wowlan *wow)
2365 {
2366         struct ath6kl_vif *vif;
2367         enum ath6kl_state prev_state;
2368         int ret;
2369
2370         switch (mode) {
2371         case ATH6KL_CFG_SUSPEND_WOW:
2372
2373                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode suspend\n");
2374
2375                 /* Flush all non control pkts in TX path */
2376                 ath6kl_tx_data_cleanup(ar);
2377
2378                 prev_state = ar->state;
2379
2380                 ret = ath6kl_wow_suspend(ar, wow);
2381                 if (ret) {
2382                         ar->state = prev_state;
2383                         return ret;
2384                 }
2385
2386                 ar->state = ATH6KL_STATE_WOW;
2387                 break;
2388
2389         case ATH6KL_CFG_SUSPEND_DEEPSLEEP:
2390
2391                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep suspend\n");
2392
2393                 ret = ath6kl_cfg80211_deepsleep_suspend(ar);
2394                 if (ret) {
2395                         ath6kl_err("deepsleep suspend failed: %d\n", ret);
2396                         return ret;
2397                 }
2398
2399                 ar->state = ATH6KL_STATE_DEEPSLEEP;
2400
2401                 break;
2402
2403         case ATH6KL_CFG_SUSPEND_CUTPOWER:
2404
2405                 ath6kl_cfg80211_stop_all(ar);
2406
2407                 if (ar->state == ATH6KL_STATE_OFF) {
2408                         ath6kl_dbg(ATH6KL_DBG_SUSPEND,
2409                                    "suspend hw off, no action for cutpower\n");
2410                         break;
2411                 }
2412
2413                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "suspend cutting power\n");
2414
2415                 ret = ath6kl_init_hw_stop(ar);
2416                 if (ret) {
2417                         ath6kl_warn("failed to stop hw during suspend: %d\n",
2418                                     ret);
2419                 }
2420
2421                 ar->state = ATH6KL_STATE_CUTPOWER;
2422
2423                 break;
2424
2425         case ATH6KL_CFG_SUSPEND_SCHED_SCAN:
2426                 /*
2427                  * Nothing needed for schedule scan, firmware is already in
2428                  * wow mode and sleeping most of the time.
2429                  */
2430                 break;
2431
2432         default:
2433                 break;
2434         }
2435
2436         list_for_each_entry(vif, &ar->vif_list, list)
2437                 ath6kl_cfg80211_scan_complete_event(vif, true);
2438
2439         return 0;
2440 }
2441 EXPORT_SYMBOL(ath6kl_cfg80211_suspend);
2442
2443 int ath6kl_cfg80211_resume(struct ath6kl *ar)
2444 {
2445         int ret;
2446
2447         switch (ar->state) {
2448         case  ATH6KL_STATE_WOW:
2449                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "wow mode resume\n");
2450
2451                 ret = ath6kl_wow_resume(ar);
2452                 if (ret) {
2453                         ath6kl_warn("wow mode resume failed: %d\n", ret);
2454                         return ret;
2455                 }
2456
2457                 break;
2458
2459         case ATH6KL_STATE_DEEPSLEEP:
2460                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "deep sleep resume\n");
2461
2462                 ret = ath6kl_cfg80211_deepsleep_resume(ar);
2463                 if (ret) {
2464                         ath6kl_warn("deep sleep resume failed: %d\n", ret);
2465                         return ret;
2466                 }
2467                 break;
2468
2469         case ATH6KL_STATE_CUTPOWER:
2470                 ath6kl_dbg(ATH6KL_DBG_SUSPEND, "resume restoring power\n");
2471
2472                 ret = ath6kl_init_hw_start(ar);
2473                 if (ret) {
2474                         ath6kl_warn("Failed to boot hw in resume: %d\n", ret);
2475                         return ret;
2476                 }
2477                 break;
2478
2479         case ATH6KL_STATE_SCHED_SCAN:
2480                 break;
2481
2482         default:
2483                 break;
2484         }
2485
2486         return 0;
2487 }
2488 EXPORT_SYMBOL(ath6kl_cfg80211_resume);
2489
2490 #ifdef CONFIG_PM
2491
2492 /* hif layer decides what suspend mode to use */
2493 static int __ath6kl_cfg80211_suspend(struct wiphy *wiphy,
2494                                  struct cfg80211_wowlan *wow)
2495 {
2496         struct ath6kl *ar = wiphy_priv(wiphy);
2497
2498         return ath6kl_hif_suspend(ar, wow);
2499 }
2500
2501 static int __ath6kl_cfg80211_resume(struct wiphy *wiphy)
2502 {
2503         struct ath6kl *ar = wiphy_priv(wiphy);
2504
2505         return ath6kl_hif_resume(ar);
2506 }
2507
2508 /*
2509  * FIXME: WOW suspend mode is selected if the host sdio controller supports
2510  * both sdio irq wake up and keep power. The target pulls sdio data line to
2511  * wake up the host when WOW pattern matches. This causes sdio irq handler
2512  * is being called in the host side which internally hits ath6kl's RX path.
2513  *
2514  * Since sdio interrupt is not disabled, RX path executes even before
2515  * the host executes the actual resume operation from PM module.
2516  *
2517  * In the current scenario, WOW resume should happen before start processing
2518  * any data from the target. So It's required to perform WOW resume in RX path.
2519  * Ideally we should perform WOW resume only in the actual platform
2520  * resume path. This area needs bit rework to avoid WOW resume in RX path.
2521  *
2522  * ath6kl_check_wow_status() is called from ath6kl_rx().
2523  */
2524 void ath6kl_check_wow_status(struct ath6kl *ar)
2525 {
2526         if (ar->state == ATH6KL_STATE_SUSPENDING)
2527                 return;
2528
2529         if (ar->state == ATH6KL_STATE_WOW)
2530                 ath6kl_cfg80211_resume(ar);
2531 }
2532
2533 #else
2534
2535 void ath6kl_check_wow_status(struct ath6kl *ar)
2536 {
2537 }
2538 #endif
2539
2540 static int ath6kl_set_htcap(struct ath6kl_vif *vif, enum ieee80211_band band,
2541                             bool ht_enable)
2542 {
2543         struct ath6kl_htcap *htcap = &vif->htcap[band];
2544
2545         if (htcap->ht_enable == ht_enable)
2546                 return 0;
2547
2548         if (ht_enable) {
2549                 /* Set default ht capabilities */
2550                 htcap->ht_enable = true;
2551                 htcap->cap_info = (band == IEEE80211_BAND_2GHZ) ?
2552                                    ath6kl_g_htcap : ath6kl_a_htcap;
2553                 htcap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_16K;
2554         } else /* Disable ht */
2555                 memset(htcap, 0, sizeof(*htcap));
2556
2557         return ath6kl_wmi_set_htcap_cmd(vif->ar->wmi, vif->fw_vif_idx,
2558                                         band, htcap);
2559 }
2560
2561 static int ath6kl_restore_htcap(struct ath6kl_vif *vif)
2562 {
2563         struct wiphy *wiphy = vif->ar->wiphy;
2564         int band, ret = 0;
2565
2566         for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
2567                 if (!wiphy->bands[band])
2568                         continue;
2569
2570                 ret = ath6kl_set_htcap(vif, band,
2571                                 wiphy->bands[band]->ht_cap.ht_supported);
2572                 if (ret)
2573                         return ret;
2574         }
2575
2576         return ret;
2577 }
2578
2579 static bool ath6kl_is_p2p_ie(const u8 *pos)
2580 {
2581         return pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
2582                 pos[2] == 0x50 && pos[3] == 0x6f &&
2583                 pos[4] == 0x9a && pos[5] == 0x09;
2584 }
2585
2586 static int ath6kl_set_ap_probe_resp_ies(struct ath6kl_vif *vif,
2587                                         const u8 *ies, size_t ies_len)
2588 {
2589         struct ath6kl *ar = vif->ar;
2590         const u8 *pos;
2591         u8 *buf = NULL;
2592         size_t len = 0;
2593         int ret;
2594
2595         /*
2596          * Filter out P2P IE(s) since they will be included depending on
2597          * the Probe Request frame in ath6kl_send_go_probe_resp().
2598          */
2599
2600         if (ies && ies_len) {
2601                 buf = kmalloc(ies_len, GFP_KERNEL);
2602                 if (buf == NULL)
2603                         return -ENOMEM;
2604                 pos = ies;
2605                 while (pos + 1 < ies + ies_len) {
2606                         if (pos + 2 + pos[1] > ies + ies_len)
2607                                 break;
2608                         if (!ath6kl_is_p2p_ie(pos)) {
2609                                 memcpy(buf + len, pos, 2 + pos[1]);
2610                                 len += 2 + pos[1];
2611                         }
2612                         pos += 2 + pos[1];
2613                 }
2614         }
2615
2616         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2617                                        WMI_FRAME_PROBE_RESP, buf, len);
2618         kfree(buf);
2619         return ret;
2620 }
2621
2622 static int ath6kl_set_ies(struct ath6kl_vif *vif,
2623                           struct cfg80211_beacon_data *info)
2624 {
2625         struct ath6kl *ar = vif->ar;
2626         int res;
2627
2628         /* this also clears IE in fw if it's not set */
2629         res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2630                                        WMI_FRAME_BEACON,
2631                                        info->beacon_ies,
2632                                        info->beacon_ies_len);
2633         if (res)
2634                 return res;
2635
2636         /* this also clears IE in fw if it's not set */
2637         res = ath6kl_set_ap_probe_resp_ies(vif, info->proberesp_ies,
2638                                            info->proberesp_ies_len);
2639         if (res)
2640                 return res;
2641
2642         /* this also clears IE in fw if it's not set */
2643         res = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
2644                                        WMI_FRAME_ASSOC_RESP,
2645                                        info->assocresp_ies,
2646                                        info->assocresp_ies_len);
2647         if (res)
2648                 return res;
2649
2650         return 0;
2651 }
2652
2653 void ath6kl_cfg80211_sta_bmiss_enhance(struct ath6kl_vif *vif, bool enable)
2654 {
2655         int err;
2656
2657         if (WARN_ON(!test_bit(WMI_READY, &vif->ar->flag)))
2658                 return;
2659
2660         if (vif->nw_type != INFRA_NETWORK)
2661                 return;
2662
2663         if (!test_bit(ATH6KL_FW_CAPABILITY_BMISS_ENHANCE,
2664                       vif->ar->fw_capabilities))
2665                 return;
2666
2667         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s fw bmiss enhance\n",
2668                    enable ? "enable" : "disable");
2669
2670         err = ath6kl_wmi_sta_bmiss_enhance_cmd(vif->ar->wmi,
2671                                                vif->fw_vif_idx, enable);
2672         if (err)
2673                 ath6kl_err("failed to %s enhanced bmiss detection: %d\n",
2674                            enable ? "enable" : "disable", err);
2675 }
2676
2677 static int ath6kl_get_rsn_capab(struct cfg80211_beacon_data *beacon,
2678                                 u8 *rsn_capab)
2679 {
2680         const u8 *rsn_ie;
2681         size_t rsn_ie_len;
2682         u16 cnt;
2683
2684         if (!beacon->tail)
2685                 return -EINVAL;
2686
2687         rsn_ie = cfg80211_find_ie(WLAN_EID_RSN, beacon->tail, beacon->tail_len);
2688         if (!rsn_ie)
2689                 return -EINVAL;
2690
2691         rsn_ie_len = *(rsn_ie + 1);
2692         /* skip element id and length */
2693         rsn_ie += 2;
2694
2695         /* skip version */
2696         if (rsn_ie_len < 2)
2697                 return -EINVAL;
2698         rsn_ie +=  2;
2699         rsn_ie_len -= 2;
2700
2701         /* skip group cipher suite */
2702         if (rsn_ie_len < 4)
2703                 return 0;
2704         rsn_ie +=  4;
2705         rsn_ie_len -= 4;
2706
2707         /* skip pairwise cipher suite */
2708         if (rsn_ie_len < 2)
2709                 return 0;
2710         cnt = get_unaligned_le16(rsn_ie);
2711         rsn_ie += (2 + cnt * 4);
2712         rsn_ie_len -= (2 + cnt * 4);
2713
2714         /* skip akm suite */
2715         if (rsn_ie_len < 2)
2716                 return 0;
2717         cnt = get_unaligned_le16(rsn_ie);
2718         rsn_ie += (2 + cnt * 4);
2719         rsn_ie_len -= (2 + cnt * 4);
2720
2721         if (rsn_ie_len < 2)
2722                 return 0;
2723
2724         memcpy(rsn_capab, rsn_ie, 2);
2725
2726         return 0;
2727 }
2728
2729 static int ath6kl_start_ap(struct wiphy *wiphy, struct net_device *dev,
2730                            struct cfg80211_ap_settings *info)
2731 {
2732         struct ath6kl *ar = ath6kl_priv(dev);
2733         struct ath6kl_vif *vif = netdev_priv(dev);
2734         struct ieee80211_mgmt *mgmt;
2735         bool hidden = false;
2736         u8 *ies;
2737         int ies_len;
2738         struct wmi_connect_cmd p;
2739         int res;
2740         int i, ret;
2741         u16 rsn_capab = 0;
2742
2743         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s:\n", __func__);
2744
2745         if (!ath6kl_cfg80211_ready(vif))
2746                 return -EIO;
2747
2748         if (vif->next_mode != AP_NETWORK)
2749                 return -EOPNOTSUPP;
2750
2751         res = ath6kl_set_ies(vif, &info->beacon);
2752
2753         ar->ap_mode_bkey.valid = false;
2754
2755         /* TODO:
2756          * info->interval
2757          */
2758
2759         ret = ath6kl_wmi_ap_set_dtim_cmd(ar->wmi, vif->fw_vif_idx,
2760                                          info->dtim_period);
2761
2762         /* ignore error, just print a warning and continue normally */
2763         if (ret)
2764                 ath6kl_warn("Failed to set dtim_period in beacon: %d\n", ret);
2765
2766         if (info->beacon.head == NULL)
2767                 return -EINVAL;
2768         mgmt = (struct ieee80211_mgmt *) info->beacon.head;
2769         ies = mgmt->u.beacon.variable;
2770         if (ies > info->beacon.head + info->beacon.head_len)
2771                 return -EINVAL;
2772         ies_len = info->beacon.head + info->beacon.head_len - ies;
2773
2774         if (info->ssid == NULL)
2775                 return -EINVAL;
2776         memcpy(vif->ssid, info->ssid, info->ssid_len);
2777         vif->ssid_len = info->ssid_len;
2778         if (info->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE)
2779                 hidden = true;
2780
2781         res = ath6kl_wmi_ap_hidden_ssid(ar->wmi, vif->fw_vif_idx, hidden);
2782         if (res)
2783                 return res;
2784
2785         ret = ath6kl_set_auth_type(vif, info->auth_type);
2786         if (ret)
2787                 return ret;
2788
2789         memset(&p, 0, sizeof(p));
2790
2791         for (i = 0; i < info->crypto.n_akm_suites; i++) {
2792                 switch (info->crypto.akm_suites[i]) {
2793                 case WLAN_AKM_SUITE_8021X:
2794                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2795                                 p.auth_mode |= WPA_AUTH;
2796                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2797                                 p.auth_mode |= WPA2_AUTH;
2798                         break;
2799                 case WLAN_AKM_SUITE_PSK:
2800                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_1)
2801                                 p.auth_mode |= WPA_PSK_AUTH;
2802                         if (info->crypto.wpa_versions & NL80211_WPA_VERSION_2)
2803                                 p.auth_mode |= WPA2_PSK_AUTH;
2804                         break;
2805                 }
2806         }
2807         if (p.auth_mode == 0)
2808                 p.auth_mode = NONE_AUTH;
2809         vif->auth_mode = p.auth_mode;
2810
2811         for (i = 0; i < info->crypto.n_ciphers_pairwise; i++) {
2812                 switch (info->crypto.ciphers_pairwise[i]) {
2813                 case WLAN_CIPHER_SUITE_WEP40:
2814                 case WLAN_CIPHER_SUITE_WEP104:
2815                         p.prwise_crypto_type |= WEP_CRYPT;
2816                         break;
2817                 case WLAN_CIPHER_SUITE_TKIP:
2818                         p.prwise_crypto_type |= TKIP_CRYPT;
2819                         break;
2820                 case WLAN_CIPHER_SUITE_CCMP:
2821                         p.prwise_crypto_type |= AES_CRYPT;
2822                         break;
2823                 case WLAN_CIPHER_SUITE_SMS4:
2824                         p.prwise_crypto_type |= WAPI_CRYPT;
2825                         break;
2826                 }
2827         }
2828         if (p.prwise_crypto_type == 0) {
2829                 p.prwise_crypto_type = NONE_CRYPT;
2830                 ath6kl_set_cipher(vif, 0, true);
2831         } else if (info->crypto.n_ciphers_pairwise == 1)
2832                 ath6kl_set_cipher(vif, info->crypto.ciphers_pairwise[0], true);
2833
2834         switch (info->crypto.cipher_group) {
2835         case WLAN_CIPHER_SUITE_WEP40:
2836         case WLAN_CIPHER_SUITE_WEP104:
2837                 p.grp_crypto_type = WEP_CRYPT;
2838                 break;
2839         case WLAN_CIPHER_SUITE_TKIP:
2840                 p.grp_crypto_type = TKIP_CRYPT;
2841                 break;
2842         case WLAN_CIPHER_SUITE_CCMP:
2843                 p.grp_crypto_type = AES_CRYPT;
2844                 break;
2845         case WLAN_CIPHER_SUITE_SMS4:
2846                 p.grp_crypto_type = WAPI_CRYPT;
2847                 break;
2848         default:
2849                 p.grp_crypto_type = NONE_CRYPT;
2850                 break;
2851         }
2852         ath6kl_set_cipher(vif, info->crypto.cipher_group, false);
2853
2854         p.nw_type = AP_NETWORK;
2855         vif->nw_type = vif->next_mode;
2856
2857         p.ssid_len = vif->ssid_len;
2858         memcpy(p.ssid, vif->ssid, vif->ssid_len);
2859         p.dot11_auth_mode = vif->dot11_auth_mode;
2860         p.ch = cpu_to_le16(info->channel->center_freq);
2861
2862         /* Enable uAPSD support by default */
2863         res = ath6kl_wmi_ap_set_apsd(ar->wmi, vif->fw_vif_idx, true);
2864         if (res < 0)
2865                 return res;
2866
2867         if (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) {
2868                 p.nw_subtype = SUBTYPE_P2PGO;
2869         } else {
2870                 /*
2871                  * Due to firmware limitation, it is not possible to
2872                  * do P2P mgmt operations in AP mode
2873                  */
2874                 p.nw_subtype = SUBTYPE_NONE;
2875         }
2876
2877         if (info->inactivity_timeout) {
2878                 res = ath6kl_wmi_set_inact_period(ar->wmi, vif->fw_vif_idx,
2879                                                   info->inactivity_timeout);
2880                 if (res < 0)
2881                         return res;
2882         }
2883
2884         if (ath6kl_set_htcap(vif, info->channel->band,
2885                              info->channel_type != NL80211_CHAN_NO_HT))
2886                 return -EIO;
2887
2888         /*
2889          * Get the PTKSA replay counter in the RSN IE. Supplicant
2890          * will use the RSN IE in M3 message and firmware has to
2891          * advertise the same in beacon/probe response. Send
2892          * the complete RSN IE capability field to firmware
2893          */
2894         if (!ath6kl_get_rsn_capab(&info->beacon, (u8 *) &rsn_capab) &&
2895             test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
2896                      ar->fw_capabilities)) {
2897                 res = ath6kl_wmi_set_ie_cmd(ar->wmi, vif->fw_vif_idx,
2898                                             WLAN_EID_RSN, WMI_RSN_IE_CAPB,
2899                                             (const u8 *) &rsn_capab,
2900                                             sizeof(rsn_capab));
2901                 if (res < 0)
2902                         return res;
2903         }
2904
2905         memcpy(&vif->profile, &p, sizeof(p));
2906         res = ath6kl_wmi_ap_profile_commit(ar->wmi, vif->fw_vif_idx, &p);
2907         if (res < 0)
2908                 return res;
2909
2910         return 0;
2911 }
2912
2913 static int ath6kl_change_beacon(struct wiphy *wiphy, struct net_device *dev,
2914                                 struct cfg80211_beacon_data *beacon)
2915 {
2916         struct ath6kl_vif *vif = netdev_priv(dev);
2917
2918         if (!ath6kl_cfg80211_ready(vif))
2919                 return -EIO;
2920
2921         if (vif->next_mode != AP_NETWORK)
2922                 return -EOPNOTSUPP;
2923
2924         return ath6kl_set_ies(vif, beacon);
2925 }
2926
2927 static int ath6kl_stop_ap(struct wiphy *wiphy, struct net_device *dev)
2928 {
2929         struct ath6kl *ar = ath6kl_priv(dev);
2930         struct ath6kl_vif *vif = netdev_priv(dev);
2931
2932         if (vif->nw_type != AP_NETWORK)
2933                 return -EOPNOTSUPP;
2934         if (!test_bit(CONNECTED, &vif->flags))
2935                 return -ENOTCONN;
2936
2937         ath6kl_wmi_disconnect_cmd(ar->wmi, vif->fw_vif_idx);
2938         clear_bit(CONNECTED, &vif->flags);
2939
2940         /* Restore ht setting in firmware */
2941         return ath6kl_restore_htcap(vif);
2942 }
2943
2944 static const u8 bcast_addr[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
2945
2946 static int ath6kl_del_station(struct wiphy *wiphy, struct net_device *dev,
2947                               u8 *mac)
2948 {
2949         struct ath6kl *ar = ath6kl_priv(dev);
2950         struct ath6kl_vif *vif = netdev_priv(dev);
2951         const u8 *addr = mac ? mac : bcast_addr;
2952
2953         return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx, WMI_AP_DEAUTH,
2954                                       addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
2955 }
2956
2957 static int ath6kl_change_station(struct wiphy *wiphy, struct net_device *dev,
2958                                  u8 *mac, struct station_parameters *params)
2959 {
2960         struct ath6kl *ar = ath6kl_priv(dev);
2961         struct ath6kl_vif *vif = netdev_priv(dev);
2962
2963         if (vif->nw_type != AP_NETWORK)
2964                 return -EOPNOTSUPP;
2965
2966         /* Use this only for authorizing/unauthorizing a station */
2967         if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)))
2968                 return -EOPNOTSUPP;
2969
2970         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED))
2971                 return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
2972                                               WMI_AP_MLME_AUTHORIZE, mac, 0);
2973         return ath6kl_wmi_ap_set_mlme(ar->wmi, vif->fw_vif_idx,
2974                                       WMI_AP_MLME_UNAUTHORIZE, mac, 0);
2975 }
2976
2977 static int ath6kl_remain_on_channel(struct wiphy *wiphy,
2978                                     struct net_device *dev,
2979                                     struct ieee80211_channel *chan,
2980                                     enum nl80211_channel_type channel_type,
2981                                     unsigned int duration,
2982                                     u64 *cookie)
2983 {
2984         struct ath6kl *ar = ath6kl_priv(dev);
2985         struct ath6kl_vif *vif = netdev_priv(dev);
2986         u32 id;
2987
2988         /* TODO: if already pending or ongoing remain-on-channel,
2989          * return -EBUSY */
2990         id = ++vif->last_roc_id;
2991         if (id == 0) {
2992                 /* Do not use 0 as the cookie value */
2993                 id = ++vif->last_roc_id;
2994         }
2995         *cookie = id;
2996
2997         return ath6kl_wmi_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx,
2998                                              chan->center_freq, duration);
2999 }
3000
3001 static int ath6kl_cancel_remain_on_channel(struct wiphy *wiphy,
3002                                            struct net_device *dev,
3003                                            u64 cookie)
3004 {
3005         struct ath6kl *ar = ath6kl_priv(dev);
3006         struct ath6kl_vif *vif = netdev_priv(dev);
3007
3008         if (cookie != vif->last_roc_id)
3009                 return -ENOENT;
3010         vif->last_cancel_roc_id = cookie;
3011
3012         return ath6kl_wmi_cancel_remain_on_chnl_cmd(ar->wmi, vif->fw_vif_idx);
3013 }
3014
3015 static int ath6kl_send_go_probe_resp(struct ath6kl_vif *vif,
3016                                      const u8 *buf, size_t len,
3017                                      unsigned int freq)
3018 {
3019         struct ath6kl *ar = vif->ar;
3020         const u8 *pos;
3021         u8 *p2p;
3022         int p2p_len;
3023         int ret;
3024         const struct ieee80211_mgmt *mgmt;
3025
3026         mgmt = (const struct ieee80211_mgmt *) buf;
3027
3028         /* Include P2P IE(s) from the frame generated in user space. */
3029
3030         p2p = kmalloc(len, GFP_KERNEL);
3031         if (p2p == NULL)
3032                 return -ENOMEM;
3033         p2p_len = 0;
3034
3035         pos = mgmt->u.probe_resp.variable;
3036         while (pos + 1 < buf + len) {
3037                 if (pos + 2 + pos[1] > buf + len)
3038                         break;
3039                 if (ath6kl_is_p2p_ie(pos)) {
3040                         memcpy(p2p + p2p_len, pos, 2 + pos[1]);
3041                         p2p_len += 2 + pos[1];
3042                 }
3043                 pos += 2 + pos[1];
3044         }
3045
3046         ret = ath6kl_wmi_send_probe_response_cmd(ar->wmi, vif->fw_vif_idx, freq,
3047                                                  mgmt->da, p2p, p2p_len);
3048         kfree(p2p);
3049         return ret;
3050 }
3051
3052 static bool ath6kl_mgmt_powersave_ap(struct ath6kl_vif *vif,
3053                                      u32 id,
3054                                      u32 freq,
3055                                      u32 wait,
3056                                      const u8 *buf,
3057                                      size_t len,
3058                                      bool *more_data,
3059                                      bool no_cck)
3060 {
3061         struct ieee80211_mgmt *mgmt;
3062         struct ath6kl_sta *conn;
3063         bool is_psq_empty = false;
3064         struct ath6kl_mgmt_buff *mgmt_buf;
3065         size_t mgmt_buf_size;
3066         struct ath6kl *ar = vif->ar;
3067
3068         mgmt = (struct ieee80211_mgmt *) buf;
3069         if (is_multicast_ether_addr(mgmt->da))
3070                 return false;
3071
3072         conn = ath6kl_find_sta(vif, mgmt->da);
3073         if (!conn)
3074                 return false;
3075
3076         if (conn->sta_flags & STA_PS_SLEEP) {
3077                 if (!(conn->sta_flags & STA_PS_POLLED)) {
3078                         /* Queue the frames if the STA is sleeping */
3079                         mgmt_buf_size = len + sizeof(struct ath6kl_mgmt_buff);
3080                         mgmt_buf = kmalloc(mgmt_buf_size, GFP_KERNEL);
3081                         if (!mgmt_buf)
3082                                 return false;
3083
3084                         INIT_LIST_HEAD(&mgmt_buf->list);
3085                         mgmt_buf->id = id;
3086                         mgmt_buf->freq = freq;
3087                         mgmt_buf->wait = wait;
3088                         mgmt_buf->len = len;
3089                         mgmt_buf->no_cck = no_cck;
3090                         memcpy(mgmt_buf->buf, buf, len);
3091                         spin_lock_bh(&conn->psq_lock);
3092                         is_psq_empty = skb_queue_empty(&conn->psq) &&
3093                                         (conn->mgmt_psq_len == 0);
3094                         list_add_tail(&mgmt_buf->list, &conn->mgmt_psq);
3095                         conn->mgmt_psq_len++;
3096                         spin_unlock_bh(&conn->psq_lock);
3097
3098                         /*
3099                          * If this is the first pkt getting queued
3100                          * for this STA, update the PVB for this
3101                          * STA.
3102                          */
3103                         if (is_psq_empty)
3104                                 ath6kl_wmi_set_pvb_cmd(ar->wmi, vif->fw_vif_idx,
3105                                                        conn->aid, 1);
3106                         return true;
3107                 }
3108
3109                 /*
3110                  * This tx is because of a PsPoll.
3111                  * Determine if MoreData bit has to be set.
3112                  */
3113                 spin_lock_bh(&conn->psq_lock);
3114                 if (!skb_queue_empty(&conn->psq) || (conn->mgmt_psq_len != 0))
3115                         *more_data = true;
3116                 spin_unlock_bh(&conn->psq_lock);
3117         }
3118
3119         return false;
3120 }
3121
3122 /* Check if SSID length is greater than DIRECT- */
3123 static bool ath6kl_is_p2p_go_ssid(const u8 *buf, size_t len)
3124 {
3125         const struct ieee80211_mgmt *mgmt;
3126         mgmt = (const struct ieee80211_mgmt *) buf;
3127
3128         /* variable[1] contains the SSID tag length */
3129         if (buf + len >= &mgmt->u.probe_resp.variable[1] &&
3130             (mgmt->u.probe_resp.variable[1] > P2P_WILDCARD_SSID_LEN)) {
3131                 return true;
3132         }
3133
3134         return false;
3135 }
3136
3137 static int ath6kl_mgmt_tx(struct wiphy *wiphy, struct net_device *dev,
3138                           struct ieee80211_channel *chan, bool offchan,
3139                           enum nl80211_channel_type channel_type,
3140                           bool channel_type_valid, unsigned int wait,
3141                           const u8 *buf, size_t len, bool no_cck,
3142                           bool dont_wait_for_ack, u64 *cookie)
3143 {
3144         struct ath6kl *ar = ath6kl_priv(dev);
3145         struct ath6kl_vif *vif = netdev_priv(dev);
3146         u32 id;
3147         const struct ieee80211_mgmt *mgmt;
3148         bool more_data, queued;
3149
3150         mgmt = (const struct ieee80211_mgmt *) buf;
3151         if (vif->nw_type == AP_NETWORK && test_bit(CONNECTED, &vif->flags) &&
3152             ieee80211_is_probe_resp(mgmt->frame_control) &&
3153             ath6kl_is_p2p_go_ssid(buf, len)) {
3154                 /*
3155                  * Send Probe Response frame in GO mode using a separate WMI
3156                  * command to allow the target to fill in the generic IEs.
3157                  */
3158                 *cookie = 0; /* TX status not supported */
3159                 return ath6kl_send_go_probe_resp(vif, buf, len,
3160                                                  chan->center_freq);
3161         }
3162
3163         id = vif->send_action_id++;
3164         if (id == 0) {
3165                 /*
3166                  * 0 is a reserved value in the WMI command and shall not be
3167                  * used for the command.
3168                  */
3169                 id = vif->send_action_id++;
3170         }
3171
3172         *cookie = id;
3173
3174         /* AP mode Power saving processing */
3175         if (vif->nw_type == AP_NETWORK) {
3176                 queued = ath6kl_mgmt_powersave_ap(vif,
3177                                         id, chan->center_freq,
3178                                         wait, buf,
3179                                         len, &more_data, no_cck);
3180                 if (queued)
3181                         return 0;
3182         }
3183
3184         return ath6kl_wmi_send_mgmt_cmd(ar->wmi, vif->fw_vif_idx, id,
3185                                         chan->center_freq, wait,
3186                                         buf, len, no_cck);
3187 }
3188
3189 static void ath6kl_mgmt_frame_register(struct wiphy *wiphy,
3190                                        struct net_device *dev,
3191                                        u16 frame_type, bool reg)
3192 {
3193         struct ath6kl_vif *vif = netdev_priv(dev);
3194
3195         ath6kl_dbg(ATH6KL_DBG_WLAN_CFG, "%s: frame_type=0x%x reg=%d\n",
3196                    __func__, frame_type, reg);
3197         if (frame_type == IEEE80211_STYPE_PROBE_REQ) {
3198                 /*
3199                  * Note: This notification callback is not allowed to sleep, so
3200                  * we cannot send WMI_PROBE_REQ_REPORT_CMD here. Instead, we
3201                  * hardcode target to report Probe Request frames all the time.
3202                  */
3203                 vif->probe_req_report = reg;
3204         }
3205 }
3206
3207 static int ath6kl_cfg80211_sscan_start(struct wiphy *wiphy,
3208                         struct net_device *dev,
3209                         struct cfg80211_sched_scan_request *request)
3210 {
3211         struct ath6kl *ar = ath6kl_priv(dev);
3212         struct ath6kl_vif *vif = netdev_priv(dev);
3213         u16 interval;
3214         int ret;
3215
3216         if (ar->state != ATH6KL_STATE_ON)
3217                 return -EIO;
3218
3219         if (vif->sme_state != SME_DISCONNECTED)
3220                 return -EBUSY;
3221
3222         /* The FW currently can't support multi-vif WoW properly. */
3223         if (ar->num_vif > 1)
3224                 return -EIO;
3225
3226         ath6kl_cfg80211_scan_complete_event(vif, true);
3227
3228         ret = ath6kl_set_probed_ssids(ar, vif, request->ssids,
3229                                       request->n_ssids,
3230                                       request->match_sets,
3231                                       request->n_match_sets);
3232         if (ret < 0)
3233                 return ret;
3234
3235         if (!request->n_match_sets) {
3236                 ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3237                                                ALL_BSS_FILTER, 0);
3238                 if (ret < 0)
3239                         return ret;
3240         } else {
3241                  ret = ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
3242                                                 MATCHED_SSID_FILTER, 0);
3243                 if (ret < 0)
3244                         return ret;
3245         }
3246
3247         /* fw uses seconds, also make sure that it's >0 */
3248         interval = max_t(u16, 1, request->interval / 1000);
3249
3250         ath6kl_wmi_scanparams_cmd(ar->wmi, vif->fw_vif_idx,
3251                                   interval, interval,
3252                                   vif->bg_scan_period, 0, 0, 0, 3, 0, 0, 0);
3253
3254         ret = ath6kl_wmi_set_wow_mode_cmd(ar->wmi, vif->fw_vif_idx,
3255                                           ATH6KL_WOW_MODE_ENABLE,
3256                                           WOW_FILTER_SSID,
3257                                           WOW_HOST_REQ_DELAY);
3258         if (ret) {
3259                 ath6kl_warn("Failed to enable wow with ssid filter: %d\n", ret);
3260                 return ret;
3261         }
3262
3263         /* this also clears IE in fw if it's not set */
3264         ret = ath6kl_wmi_set_appie_cmd(ar->wmi, vif->fw_vif_idx,
3265                                        WMI_FRAME_PROBE_REQ,
3266                                        request->ie, request->ie_len);
3267         if (ret) {
3268                 ath6kl_warn("Failed to set probe request IE for scheduled scan: %d\n",
3269                             ret);
3270                 return ret;
3271         }
3272
3273         ret = ath6kl_wmi_set_host_sleep_mode_cmd(ar->wmi, vif->fw_vif_idx,
3274                                                  ATH6KL_HOST_MODE_ASLEEP);
3275         if (ret) {
3276                 ath6kl_warn("Failed to enable host sleep mode for sched scan: %d\n",
3277                             ret);
3278                 return ret;
3279         }
3280
3281         ar->state = ATH6KL_STATE_SCHED_SCAN;
3282
3283         return ret;
3284 }
3285
3286 static int ath6kl_cfg80211_sscan_stop(struct wiphy *wiphy,
3287                                       struct net_device *dev)
3288 {
3289         struct ath6kl_vif *vif = netdev_priv(dev);
3290         bool stopped;
3291
3292         stopped = __ath6kl_cfg80211_sscan_stop(vif);
3293
3294         if (!stopped)
3295                 return -EIO;
3296
3297         return 0;
3298 }
3299
3300 static int ath6kl_cfg80211_set_bitrate(struct wiphy *wiphy,
3301                                        struct net_device *dev,
3302                                        const u8 *addr,
3303                                        const struct cfg80211_bitrate_mask *mask)
3304 {
3305         struct ath6kl *ar = ath6kl_priv(dev);
3306         struct ath6kl_vif *vif = netdev_priv(dev);
3307
3308         return ath6kl_wmi_set_bitrate_mask(ar->wmi, vif->fw_vif_idx,
3309                                            mask);
3310 }
3311
3312 static const struct ieee80211_txrx_stypes
3313 ath6kl_mgmt_stypes[NUM_NL80211_IFTYPES] = {
3314         [NL80211_IFTYPE_STATION] = {
3315                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3316                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3317                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3318                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3319         },
3320         [NL80211_IFTYPE_AP] = {
3321                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3322                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3323                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3324                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3325         },
3326         [NL80211_IFTYPE_P2P_CLIENT] = {
3327                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3328                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3329                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3330                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3331         },
3332         [NL80211_IFTYPE_P2P_GO] = {
3333                 .tx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3334                 BIT(IEEE80211_STYPE_PROBE_RESP >> 4),
3335                 .rx = BIT(IEEE80211_STYPE_ACTION >> 4) |
3336                 BIT(IEEE80211_STYPE_PROBE_REQ >> 4)
3337         },
3338 };
3339
3340 static struct cfg80211_ops ath6kl_cfg80211_ops = {
3341         .add_virtual_intf = ath6kl_cfg80211_add_iface,
3342         .del_virtual_intf = ath6kl_cfg80211_del_iface,
3343         .change_virtual_intf = ath6kl_cfg80211_change_iface,
3344         .scan = ath6kl_cfg80211_scan,
3345         .connect = ath6kl_cfg80211_connect,
3346         .disconnect = ath6kl_cfg80211_disconnect,
3347         .add_key = ath6kl_cfg80211_add_key,
3348         .get_key = ath6kl_cfg80211_get_key,
3349         .del_key = ath6kl_cfg80211_del_key,
3350         .set_default_key = ath6kl_cfg80211_set_default_key,
3351         .set_wiphy_params = ath6kl_cfg80211_set_wiphy_params,
3352         .set_tx_power = ath6kl_cfg80211_set_txpower,
3353         .get_tx_power = ath6kl_cfg80211_get_txpower,
3354         .set_power_mgmt = ath6kl_cfg80211_set_power_mgmt,
3355         .join_ibss = ath6kl_cfg80211_join_ibss,
3356         .leave_ibss = ath6kl_cfg80211_leave_ibss,
3357         .get_station = ath6kl_get_station,
3358         .set_pmksa = ath6kl_set_pmksa,
3359         .del_pmksa = ath6kl_del_pmksa,
3360         .flush_pmksa = ath6kl_flush_pmksa,
3361         CFG80211_TESTMODE_CMD(ath6kl_tm_cmd)
3362 #ifdef CONFIG_PM
3363         .suspend = __ath6kl_cfg80211_suspend,
3364         .resume = __ath6kl_cfg80211_resume,
3365 #endif
3366         .start_ap = ath6kl_start_ap,
3367         .change_beacon = ath6kl_change_beacon,
3368         .stop_ap = ath6kl_stop_ap,
3369         .del_station = ath6kl_del_station,
3370         .change_station = ath6kl_change_station,
3371         .remain_on_channel = ath6kl_remain_on_channel,
3372         .cancel_remain_on_channel = ath6kl_cancel_remain_on_channel,
3373         .mgmt_tx = ath6kl_mgmt_tx,
3374         .mgmt_frame_register = ath6kl_mgmt_frame_register,
3375         .sched_scan_start = ath6kl_cfg80211_sscan_start,
3376         .sched_scan_stop = ath6kl_cfg80211_sscan_stop,
3377         .set_bitrate_mask = ath6kl_cfg80211_set_bitrate,
3378 };
3379
3380 void ath6kl_cfg80211_stop(struct ath6kl_vif *vif)
3381 {
3382         ath6kl_cfg80211_sscan_disable(vif);
3383
3384         switch (vif->sme_state) {
3385         case SME_DISCONNECTED:
3386                 break;
3387         case SME_CONNECTING:
3388                 cfg80211_connect_result(vif->ndev, vif->bssid, NULL, 0,
3389                                         NULL, 0,
3390                                         WLAN_STATUS_UNSPECIFIED_FAILURE,
3391                                         GFP_KERNEL);
3392                 break;
3393         case SME_CONNECTED:
3394                 cfg80211_disconnected(vif->ndev, 0, NULL, 0, GFP_KERNEL);
3395                 break;
3396         }
3397
3398         if (test_bit(CONNECTED, &vif->flags) ||
3399             test_bit(CONNECT_PEND, &vif->flags))
3400                 ath6kl_wmi_disconnect_cmd(vif->ar->wmi, vif->fw_vif_idx);
3401
3402         vif->sme_state = SME_DISCONNECTED;
3403         clear_bit(CONNECTED, &vif->flags);
3404         clear_bit(CONNECT_PEND, &vif->flags);
3405
3406         /* disable scanning */
3407         if (ath6kl_wmi_scanparams_cmd(vif->ar->wmi, vif->fw_vif_idx, 0xFFFF,
3408                                       0, 0, 0, 0, 0, 0, 0, 0, 0) != 0)
3409                 ath6kl_warn("failed to disable scan during stop\n");
3410
3411         ath6kl_cfg80211_scan_complete_event(vif, true);
3412 }
3413
3414 void ath6kl_cfg80211_stop_all(struct ath6kl *ar)
3415 {
3416         struct ath6kl_vif *vif;
3417
3418         vif = ath6kl_vif_first(ar);
3419         if (!vif) {
3420                 /* save the current power mode before enabling power save */
3421                 ar->wmi->saved_pwr_mode = ar->wmi->pwr_mode;
3422
3423                 if (ath6kl_wmi_powermode_cmd(ar->wmi, 0, REC_POWER) != 0)
3424                         ath6kl_warn("ath6kl_deep_sleep_enable: wmi_powermode_cmd failed\n");
3425                 return;
3426         }
3427
3428         /*
3429          * FIXME: we should take ar->list_lock to protect changes in the
3430          * vif_list, but that's not trivial to do as ath6kl_cfg80211_stop()
3431          * sleeps.
3432          */
3433         list_for_each_entry(vif, &ar->vif_list, list)
3434                 ath6kl_cfg80211_stop(vif);
3435 }
3436
3437 static int ath6kl_cfg80211_vif_init(struct ath6kl_vif *vif)
3438 {
3439         vif->aggr_cntxt = aggr_init(vif);
3440         if (!vif->aggr_cntxt) {
3441                 ath6kl_err("failed to initialize aggr\n");
3442                 return -ENOMEM;
3443         }
3444
3445         setup_timer(&vif->disconnect_timer, disconnect_timer_handler,
3446                     (unsigned long) vif->ndev);
3447         setup_timer(&vif->sched_scan_timer, ath6kl_wmi_sscan_timer,
3448                     (unsigned long) vif);
3449
3450         set_bit(WMM_ENABLED, &vif->flags);
3451         spin_lock_init(&vif->if_lock);
3452
3453         INIT_LIST_HEAD(&vif->mc_filter);
3454
3455         return 0;
3456 }
3457
3458 void ath6kl_cfg80211_vif_cleanup(struct ath6kl_vif *vif)
3459 {
3460         struct ath6kl *ar = vif->ar;
3461         struct ath6kl_mc_filter *mc_filter, *tmp;
3462
3463         aggr_module_destroy(vif->aggr_cntxt);
3464
3465         ar->avail_idx_map |= BIT(vif->fw_vif_idx);
3466
3467         if (vif->nw_type == ADHOC_NETWORK)
3468                 ar->ibss_if_active = false;
3469
3470         list_for_each_entry_safe(mc_filter, tmp, &vif->mc_filter, list) {
3471                 list_del(&mc_filter->list);
3472                 kfree(mc_filter);
3473         }
3474
3475         unregister_netdevice(vif->ndev);
3476
3477         ar->num_vif--;
3478 }
3479
3480 struct net_device *ath6kl_interface_add(struct ath6kl *ar, char *name,
3481                                         enum nl80211_iftype type, u8 fw_vif_idx,
3482                                         u8 nw_type)
3483 {
3484         struct net_device *ndev;
3485         struct ath6kl_vif *vif;
3486
3487         ndev = alloc_netdev(sizeof(*vif), name, ether_setup);
3488         if (!ndev)
3489                 return NULL;
3490
3491         vif = netdev_priv(ndev);
3492         ndev->ieee80211_ptr = &vif->wdev;
3493         vif->wdev.wiphy = ar->wiphy;
3494         vif->ar = ar;
3495         vif->ndev = ndev;
3496         SET_NETDEV_DEV(ndev, wiphy_dev(vif->wdev.wiphy));
3497         vif->wdev.netdev = ndev;
3498         vif->wdev.iftype = type;
3499         vif->fw_vif_idx = fw_vif_idx;
3500         vif->nw_type = nw_type;
3501         vif->next_mode = nw_type;
3502         vif->listen_intvl_t = ATH6KL_DEFAULT_LISTEN_INTVAL;
3503         vif->bmiss_time_t = ATH6KL_DEFAULT_BMISS_TIME;
3504         vif->bg_scan_period = 0;
3505         vif->htcap[IEEE80211_BAND_2GHZ].ht_enable = true;
3506         vif->htcap[IEEE80211_BAND_5GHZ].ht_enable = true;
3507
3508         memcpy(ndev->dev_addr, ar->mac_addr, ETH_ALEN);
3509         if (fw_vif_idx != 0)
3510                 ndev->dev_addr[0] = (ndev->dev_addr[0] ^ (1 << fw_vif_idx)) |
3511                                      0x2;
3512
3513         init_netdev(ndev);
3514
3515         ath6kl_init_control_info(vif);
3516
3517         if (ath6kl_cfg80211_vif_init(vif))
3518                 goto err;
3519
3520         if (register_netdevice(ndev))
3521                 goto err;
3522
3523         ar->avail_idx_map &= ~BIT(fw_vif_idx);
3524         vif->sme_state = SME_DISCONNECTED;
3525         set_bit(WLAN_ENABLED, &vif->flags);
3526         ar->wlan_pwr_state = WLAN_POWER_STATE_ON;
3527         set_bit(NETDEV_REGISTERED, &vif->flags);
3528
3529         if (type == NL80211_IFTYPE_ADHOC)
3530                 ar->ibss_if_active = true;
3531
3532         spin_lock_bh(&ar->list_lock);
3533         list_add_tail(&vif->list, &ar->vif_list);
3534         spin_unlock_bh(&ar->list_lock);
3535
3536         return ndev;
3537
3538 err:
3539         aggr_module_destroy(vif->aggr_cntxt);
3540         free_netdev(ndev);
3541         return NULL;
3542 }
3543
3544 int ath6kl_cfg80211_init(struct ath6kl *ar)
3545 {
3546         struct wiphy *wiphy = ar->wiphy;
3547         bool band_2gig = false, band_5gig = false, ht = false;
3548         int ret;
3549
3550         wiphy->mgmt_stypes = ath6kl_mgmt_stypes;
3551
3552         wiphy->max_remain_on_channel_duration = 5000;
3553
3554         /* set device pointer for wiphy */
3555         set_wiphy_dev(wiphy, ar->dev);
3556
3557         wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
3558                                  BIT(NL80211_IFTYPE_ADHOC) |
3559                                  BIT(NL80211_IFTYPE_AP);
3560         if (ar->p2p) {
3561                 wiphy->interface_modes |= BIT(NL80211_IFTYPE_P2P_GO) |
3562                                           BIT(NL80211_IFTYPE_P2P_CLIENT);
3563         }
3564
3565         /* max num of ssids that can be probed during scanning */
3566         wiphy->max_scan_ssids = MAX_PROBED_SSIDS;
3567
3568         /* max num of ssids that can be matched after scan */
3569         if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN_MATCH_LIST,
3570                      ar->fw_capabilities))
3571                 wiphy->max_match_sets = MAX_PROBED_SSIDS;
3572
3573         wiphy->max_scan_ie_len = 1000; /* FIX: what is correct limit? */
3574         switch (ar->hw.cap) {
3575         case WMI_11AN_CAP:
3576                 ht = true;
3577         case WMI_11A_CAP:
3578                 band_5gig = true;
3579                 break;
3580         case WMI_11GN_CAP:
3581                 ht = true;
3582         case WMI_11G_CAP:
3583                 band_2gig = true;
3584                 break;
3585         case WMI_11AGN_CAP:
3586                 ht = true;
3587         case WMI_11AG_CAP:
3588                 band_2gig = true;
3589                 band_5gig = true;
3590                 break;
3591         default:
3592                 ath6kl_err("invalid phy capability!\n");
3593                 return -EINVAL;
3594         }
3595
3596         /*
3597          * Even if the fw has HT support, advertise HT cap only when
3598          * the firmware has support to override RSN capability, otherwise
3599          * 4-way handshake would fail.
3600          */
3601         if (!(ht &&
3602               test_bit(ATH6KL_FW_CAPABILITY_RSN_CAP_OVERRIDE,
3603                        ar->fw_capabilities))) {
3604                 ath6kl_band_2ghz.ht_cap.cap = 0;
3605                 ath6kl_band_2ghz.ht_cap.ht_supported = false;
3606                 ath6kl_band_5ghz.ht_cap.cap = 0;
3607                 ath6kl_band_5ghz.ht_cap.ht_supported = false;
3608         }
3609
3610         if (ar->hw.flags & ATH6KL_HW_FLAG_64BIT_RATES) {
3611                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3612                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3613                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3614                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[1] = 0xff;
3615         } else {
3616                 ath6kl_band_2ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3617                 ath6kl_band_5ghz.ht_cap.mcs.rx_mask[0] = 0xff;
3618         }
3619
3620         if (band_2gig)
3621                 wiphy->bands[IEEE80211_BAND_2GHZ] = &ath6kl_band_2ghz;
3622         if (band_5gig)
3623                 wiphy->bands[IEEE80211_BAND_5GHZ] = &ath6kl_band_5ghz;
3624
3625         wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
3626
3627         wiphy->cipher_suites = cipher_suites;
3628         wiphy->n_cipher_suites = ARRAY_SIZE(cipher_suites);
3629
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
3640         wiphy->max_sched_scan_ssids = MAX_PROBED_SSIDS;
3641
3642         ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_FW_ROAM |
3643                             WIPHY_FLAG_HAVE_AP_SME |
3644                             WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL |
3645                             WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD;
3646
3647         if (test_bit(ATH6KL_FW_CAPABILITY_SCHED_SCAN, ar->fw_capabilities))
3648                 ar->wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
3649
3650         if (test_bit(ATH6KL_FW_CAPABILITY_INACTIVITY_TIMEOUT,
3651                      ar->fw_capabilities))
3652                 ar->wiphy->features = NL80211_FEATURE_INACTIVITY_TIMER;
3653
3654         ar->wiphy->probe_resp_offload =
3655                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS |
3656                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2 |
3657                 NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P;
3658
3659         ret = wiphy_register(wiphy);
3660         if (ret < 0) {
3661                 ath6kl_err("couldn't register wiphy device\n");
3662                 return ret;
3663         }
3664
3665         ar->wiphy_registered = true;
3666
3667         return 0;
3668 }
3669
3670 void ath6kl_cfg80211_cleanup(struct ath6kl *ar)
3671 {
3672         wiphy_unregister(ar->wiphy);
3673
3674         ar->wiphy_registered = false;
3675 }
3676
3677 struct ath6kl *ath6kl_cfg80211_create(void)
3678 {
3679         struct ath6kl *ar;
3680         struct wiphy *wiphy;
3681
3682         /* create a new wiphy for use with cfg80211 */
3683         wiphy = wiphy_new(&ath6kl_cfg80211_ops, sizeof(struct ath6kl));
3684
3685         if (!wiphy) {
3686                 ath6kl_err("couldn't allocate wiphy device\n");
3687                 return NULL;
3688         }
3689
3690         ar = wiphy_priv(wiphy);
3691         ar->wiphy = wiphy;
3692
3693         return ar;
3694 }
3695
3696 /* Note: ar variable must not be accessed after calling this! */
3697 void ath6kl_cfg80211_destroy(struct ath6kl *ar)
3698 {
3699         int i;
3700
3701         for (i = 0; i < AP_MAX_NUM_STA; i++)
3702                 kfree(ar->sta_list[i].aggr_conn);
3703
3704         wiphy_free(ar->wiphy);
3705 }
3706