drivers/net/wireless/mwifiex/uap_cmd.c

   1 /*
   2  * Marvell Wireless LAN device driver: AP specific command handling
   3  *
   4  * Copyright (C) 2012, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include "main.h"
  21
  22 /* This function parses security related parameters from cfg80211_ap_settings
  23  * and sets into FW understandable bss_config structure.
  24  */
  25 int mwifiex_set_secure_params(struct mwifiex_private *priv,
  26                               struct mwifiex_uap_bss_param *bss_config,
  27                               struct cfg80211_ap_settings *params) {
  28         int i;
  29         struct mwifiex_wep_key wep_key;
  30
  31         if (!params->privacy) {
  32                 bss_config->protocol = PROTOCOL_NO_SECURITY;
  33                 bss_config->key_mgmt = KEY_MGMT_NONE;
  34                 bss_config->wpa_cfg.length = 0;
  35                 priv->sec_info.wep_enabled = 0;
  36                 priv->sec_info.wpa_enabled = 0;
  37                 priv->sec_info.wpa2_enabled = 0;
  38
  39                 return 0;
  40         }
  41
  42         switch (params->auth_type) {
  43         case NL80211_AUTHTYPE_OPEN_SYSTEM:
  44                 bss_config->auth_mode = WLAN_AUTH_OPEN;
  45                 break;
  46         case NL80211_AUTHTYPE_SHARED_KEY:
  47                 bss_config->auth_mode = WLAN_AUTH_SHARED_KEY;
  48                 break;
  49         case NL80211_AUTHTYPE_NETWORK_EAP:
  50                 bss_config->auth_mode = WLAN_AUTH_LEAP;
  51                 break;
  52         default:
  53                 bss_config->auth_mode = MWIFIEX_AUTH_MODE_AUTO;
  54                 break;
  55         }
  56
  57         bss_config->key_mgmt_operation |= KEY_MGMT_ON_HOST;
  58
  59         for (i = 0; i < params->crypto.n_akm_suites; i++) {
  60                 switch (params->crypto.akm_suites[i]) {
  61                 case WLAN_AKM_SUITE_8021X:
  62                         if (params->crypto.wpa_versions &
  63                             NL80211_WPA_VERSION_1) {
  64                                 bss_config->protocol = PROTOCOL_WPA;
  65                                 bss_config->key_mgmt = KEY_MGMT_EAP;
  66                         }
  67                         if (params->crypto.wpa_versions &
  68                             NL80211_WPA_VERSION_2) {
  69                                 bss_config->protocol |= PROTOCOL_WPA2;
  70                                 bss_config->key_mgmt = KEY_MGMT_EAP;
  71                         }
  72                         break;
  73                 case WLAN_AKM_SUITE_PSK:
  74                         if (params->crypto.wpa_versions &
  75                             NL80211_WPA_VERSION_1) {
  76                                 bss_config->protocol = PROTOCOL_WPA;
  77                                 bss_config->key_mgmt = KEY_MGMT_PSK;
  78                         }
  79                         if (params->crypto.wpa_versions &
  80                             NL80211_WPA_VERSION_2) {
  81                                 bss_config->protocol |= PROTOCOL_WPA2;
  82                                 bss_config->key_mgmt = KEY_MGMT_PSK;
  83                         }
  84                         break;
  85                 default:
  86                         break;
  87                 }
  88         }
  89         for (i = 0; i < params->crypto.n_ciphers_pairwise; i++) {
  90                 switch (params->crypto.ciphers_pairwise[i]) {
  91                 case WLAN_CIPHER_SUITE_WEP40:
  92                 case WLAN_CIPHER_SUITE_WEP104:
  93                         break;
  94                 case WLAN_CIPHER_SUITE_TKIP:
  95                         if (params->crypto.wpa_versions & NL80211_WPA_VERSION_1)
  96                                 bss_config->wpa_cfg.pairwise_cipher_wpa |=
  97                                                                 CIPHER_TKIP;
  98                         if (params->crypto.wpa_versions & NL80211_WPA_VERSION_2)
  99                                 bss_config->wpa_cfg.pairwise_cipher_wpa2 |=
 100                                                                 CIPHER_TKIP;
 101                         break;
 102                 case WLAN_CIPHER_SUITE_CCMP:
 103                         if (params->crypto.wpa_versions & NL80211_WPA_VERSION_1)
 104                                 bss_config->wpa_cfg.pairwise_cipher_wpa |=
 105                                                                 CIPHER_AES_CCMP;
 106                         if (params->crypto.wpa_versions & NL80211_WPA_VERSION_2)
 107                                 bss_config->wpa_cfg.pairwise_cipher_wpa2 |=
 108                                                                 CIPHER_AES_CCMP;
 109                 default:
 110                         break;
 111                 }
 112         }
 113
 114         switch (params->crypto.cipher_group) {
 115         case WLAN_CIPHER_SUITE_WEP40:
 116         case WLAN_CIPHER_SUITE_WEP104:
 117                 if (priv->sec_info.wep_enabled) {
 118                         bss_config->protocol = PROTOCOL_STATIC_WEP;
 119                         bss_config->key_mgmt = KEY_MGMT_NONE;
 120                         bss_config->wpa_cfg.length = 0;
 121
 122                         for (i = 0; i < NUM_WEP_KEYS; i++) {
 123                                 wep_key = priv->wep_key[i];
 124                                 bss_config->wep_cfg[i].key_index = i;
 125
 126                                 if (priv->wep_key_curr_index == i)
 127                                         bss_config->wep_cfg[i].is_default = 1;
 128                                 else
 129                                         bss_config->wep_cfg[i].is_default = 0;
 130
 131                                 bss_config->wep_cfg[i].length =
 132                                                              wep_key.key_length;
 133                                 memcpy(&bss_config->wep_cfg[i].key,
 134                                        &wep_key.key_material,
 135                                        wep_key.key_length);
 136                         }
 137                 }
 138                 break;
 139         case WLAN_CIPHER_SUITE_TKIP:
 140                 bss_config->wpa_cfg.group_cipher = CIPHER_TKIP;
 141                 break;
 142         case WLAN_CIPHER_SUITE_CCMP:
 143                 bss_config->wpa_cfg.group_cipher = CIPHER_AES_CCMP;
 144                 break;
 145         default:
 146                 break;
 147         }
 148
 149         return 0;
 150 }
 151
 152 /* This function updates 11n related parameters from IE and sets them into
 153  * bss_config structure.
 154  */
 155 void
 156 mwifiex_set_ht_params(struct mwifiex_private *priv,
 157                       struct mwifiex_uap_bss_param *bss_cfg,
 158                       struct cfg80211_ap_settings *params)
 159 {
 160         const u8 *ht_ie;
 161
 162         if (!ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
 163                 return;
 164
 165         ht_ie = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, params->beacon.tail,
 166                                  params->beacon.tail_len);
 167         if (ht_ie) {
 168                 memcpy(&bss_cfg->ht_cap, ht_ie + 2,
 169                        sizeof(struct ieee80211_ht_cap));
 170                 priv->ap_11n_enabled = 1;
 171         } else {
 172                 memset(&bss_cfg->ht_cap , 0, sizeof(struct ieee80211_ht_cap));
 173                 bss_cfg->ht_cap.cap_info = cpu_to_le16(MWIFIEX_DEF_HT_CAP);
 174                 bss_cfg->ht_cap.ampdu_params_info = MWIFIEX_DEF_AMPDU;
 175         }
 176
 177         return;
 178 }
 179
 180 /* This function finds supported rates IE from beacon parameter and sets
 181  * these rates into bss_config structure.
 182  */
 183 void
 184 mwifiex_set_uap_rates(struct mwifiex_uap_bss_param *bss_cfg,
 185                       struct cfg80211_ap_settings *params)
 186 {
 187         struct ieee_types_header *rate_ie;
 188         int var_offset = offsetof(struct ieee80211_mgmt, u.beacon.variable);
 189         const u8 *var_pos = params->beacon.head + var_offset;
 190         int len = params->beacon.head_len - var_offset;
 191
 192         rate_ie = (void *)cfg80211_find_ie(WLAN_EID_SUPP_RATES, var_pos, len);
 193         if (rate_ie)
 194                 memcpy(bss_cfg->rates, rate_ie + 1, rate_ie->len);
 195
 196         return;
 197 }
 198
 199 /* This function initializes some of mwifiex_uap_bss_param variables.
 200  * This helps FW in ignoring invalid values. These values may or may not
 201  * be get updated to valid ones at later stage.
 202  */
 203 void mwifiex_set_sys_config_invalid_data(struct mwifiex_uap_bss_param *config)
 204 {
 205         config->bcast_ssid_ctl = 0x7F;
 206         config->radio_ctl = 0x7F;
 207         config->dtim_period = 0x7F;
 208         config->beacon_period = 0x7FFF;
 209         config->auth_mode = 0x7F;
 210         config->rts_threshold = 0x7FFF;
 211         config->frag_threshold = 0x7FFF;
 212         config->retry_limit = 0x7F;
 213 }
 214
 215 /* This function parses BSS related parameters from structure
 216  * and prepares TLVs specific to WPA/WPA2 security.
 217  * These TLVs are appended to command buffer.
 218  */
 219 static void
 220 mwifiex_uap_bss_wpa(u8 **tlv_buf, void *cmd_buf, u16 *param_size)
 221 {
 222         struct host_cmd_tlv_pwk_cipher *pwk_cipher;
 223         struct host_cmd_tlv_gwk_cipher *gwk_cipher;
 224         struct host_cmd_tlv_passphrase *passphrase;
 225         struct host_cmd_tlv_akmp *tlv_akmp;
 226         struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;
 227         u16 cmd_size = *param_size;
 228         u8 *tlv = *tlv_buf;
 229
 230         tlv_akmp = (struct host_cmd_tlv_akmp *)tlv;
 231         tlv_akmp->tlv.type = cpu_to_le16(TLV_TYPE_UAP_AKMP);
 232         tlv_akmp->tlv.len = cpu_to_le16(sizeof(struct host_cmd_tlv_akmp) -
 233                                         sizeof(struct host_cmd_tlv));
 234         tlv_akmp->key_mgmt_operation = cpu_to_le16(bss_cfg->key_mgmt_operation);
 235         tlv_akmp->key_mgmt = cpu_to_le16(bss_cfg->key_mgmt);
 236         cmd_size += sizeof(struct host_cmd_tlv_akmp);
 237         tlv += sizeof(struct host_cmd_tlv_akmp);
 238
 239         if (bss_cfg->wpa_cfg.pairwise_cipher_wpa & VALID_CIPHER_BITMAP) {
 240                 pwk_cipher = (struct host_cmd_tlv_pwk_cipher *)tlv;
 241                 pwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_PWK_CIPHER);
 242                 pwk_cipher->tlv.len =
 243                         cpu_to_le16(sizeof(struct host_cmd_tlv_pwk_cipher) -
 244                                     sizeof(struct host_cmd_tlv));
 245                 pwk_cipher->proto = cpu_to_le16(PROTOCOL_WPA);
 246                 pwk_cipher->cipher = bss_cfg->wpa_cfg.pairwise_cipher_wpa;
 247                 cmd_size += sizeof(struct host_cmd_tlv_pwk_cipher);
 248                 tlv += sizeof(struct host_cmd_tlv_pwk_cipher);
 249         }
 250
 251         if (bss_cfg->wpa_cfg.pairwise_cipher_wpa2 & VALID_CIPHER_BITMAP) {
 252                 pwk_cipher = (struct host_cmd_tlv_pwk_cipher *)tlv;
 253                 pwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_PWK_CIPHER);
 254                 pwk_cipher->tlv.len =
 255                         cpu_to_le16(sizeof(struct host_cmd_tlv_pwk_cipher) -
 256                                     sizeof(struct host_cmd_tlv));
 257                 pwk_cipher->proto = cpu_to_le16(PROTOCOL_WPA2);
 258                 pwk_cipher->cipher = bss_cfg->wpa_cfg.pairwise_cipher_wpa2;
 259                 cmd_size += sizeof(struct host_cmd_tlv_pwk_cipher);
 260                 tlv += sizeof(struct host_cmd_tlv_pwk_cipher);
 261         }
 262
 263         if (bss_cfg->wpa_cfg.group_cipher & VALID_CIPHER_BITMAP) {
 264                 gwk_cipher = (struct host_cmd_tlv_gwk_cipher *)tlv;
 265                 gwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_GWK_CIPHER);
 266                 gwk_cipher->tlv.len =
 267                         cpu_to_le16(sizeof(struct host_cmd_tlv_gwk_cipher) -
 268                                     sizeof(struct host_cmd_tlv));
 269                 gwk_cipher->cipher = bss_cfg->wpa_cfg.group_cipher;
 270                 cmd_size += sizeof(struct host_cmd_tlv_gwk_cipher);
 271                 tlv += sizeof(struct host_cmd_tlv_gwk_cipher);
 272         }
 273
 274         if (bss_cfg->wpa_cfg.length) {
 275                 passphrase = (struct host_cmd_tlv_passphrase *)tlv;
 276                 passphrase->tlv.type = cpu_to_le16(TLV_TYPE_UAP_WPA_PASSPHRASE);
 277                 passphrase->tlv.len = cpu_to_le16(bss_cfg->wpa_cfg.length);
 278                 memcpy(passphrase->passphrase, bss_cfg->wpa_cfg.passphrase,
 279                        bss_cfg->wpa_cfg.length);
 280                 cmd_size += sizeof(struct host_cmd_tlv) +
 281                             bss_cfg->wpa_cfg.length;
 282                 tlv += sizeof(struct host_cmd_tlv) + bss_cfg->wpa_cfg.length;
 283         }
 284
 285         *param_size = cmd_size;
 286         *tlv_buf = tlv;
 287
 288         return;
 289 }
 290
 291 /* This function parses BSS related parameters from structure
 292  * and prepares TLVs specific to WEP encryption.
 293  * These TLVs are appended to command buffer.
 294  */
 295 static void
 296 mwifiex_uap_bss_wep(u8 **tlv_buf, void *cmd_buf, u16 *param_size)
 297 {
 298         struct host_cmd_tlv_wep_key *wep_key;
 299         u16 cmd_size = *param_size;
 300         int i;
 301         u8 *tlv = *tlv_buf;
 302         struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;
 303
 304         for (i = 0; i < NUM_WEP_KEYS; i++) {
 305                 if (bss_cfg->wep_cfg[i].length &&
 306                     (bss_cfg->wep_cfg[i].length == WLAN_KEY_LEN_WEP40 ||
 307                      bss_cfg->wep_cfg[i].length == WLAN_KEY_LEN_WEP104)) {
 308                         wep_key = (struct host_cmd_tlv_wep_key *)tlv;
 309                         wep_key->tlv.type = cpu_to_le16(TLV_TYPE_UAP_WEP_KEY);
 310                         wep_key->tlv.len =
 311                                 cpu_to_le16(bss_cfg->wep_cfg[i].length + 2);
 312                         wep_key->key_index = bss_cfg->wep_cfg[i].key_index;
 313                         wep_key->is_default = bss_cfg->wep_cfg[i].is_default;
 314                         memcpy(wep_key->key, bss_cfg->wep_cfg[i].key,
 315                                bss_cfg->wep_cfg[i].length);
 316                         cmd_size += sizeof(struct host_cmd_tlv) + 2 +
 317                                     bss_cfg->wep_cfg[i].length;
 318                         tlv += sizeof(struct host_cmd_tlv) + 2 +
 319                                     bss_cfg->wep_cfg[i].length;
 320                 }
 321         }
 322
 323         *param_size = cmd_size;
 324         *tlv_buf = tlv;
 325
 326         return;
 327 }
 328
 329 /* This function parses BSS related parameters from structure
 330  * and prepares TLVs. These TLVs are appended to command buffer.
 331 */
 332 static int
 333 mwifiex_uap_bss_param_prepare(u8 *tlv, void *cmd_buf, u16 *param_size)
 334 {
 335         struct host_cmd_tlv_dtim_period *dtim_period;
 336         struct host_cmd_tlv_beacon_period *beacon_period;
 337         struct host_cmd_tlv_ssid *ssid;
 338         struct host_cmd_tlv_bcast_ssid *bcast_ssid;
 339         struct host_cmd_tlv_channel_band *chan_band;
 340         struct host_cmd_tlv_frag_threshold *frag_threshold;
 341         struct host_cmd_tlv_rts_threshold *rts_threshold;
 342         struct host_cmd_tlv_retry_limit *retry_limit;
 343         struct host_cmd_tlv_encrypt_protocol *encrypt_protocol;
 344         struct host_cmd_tlv_auth_type *auth_type;
 345         struct host_cmd_tlv_rates *tlv_rates;
 346         struct host_cmd_tlv_ageout_timer *ao_timer, *ps_ao_timer;
 347         struct mwifiex_ie_types_htcap *htcap;
 348         struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;
 349         int i;
 350         u16 cmd_size = *param_size;
 351
 352         if (bss_cfg->ssid.ssid_len) {
 353                 ssid = (struct host_cmd_tlv_ssid *)tlv;
 354                 ssid->tlv.type = cpu_to_le16(TLV_TYPE_UAP_SSID);
 355                 ssid->tlv.len = cpu_to_le16((u16)bss_cfg->ssid.ssid_len);
 356                 memcpy(ssid->ssid, bss_cfg->ssid.ssid, bss_cfg->ssid.ssid_len);
 357                 cmd_size += sizeof(struct host_cmd_tlv) +
 358                             bss_cfg->ssid.ssid_len;
 359                 tlv += sizeof(struct host_cmd_tlv) + bss_cfg->ssid.ssid_len;
 360
 361                 bcast_ssid = (struct host_cmd_tlv_bcast_ssid *)tlv;
 362                 bcast_ssid->tlv.type = cpu_to_le16(TLV_TYPE_UAP_BCAST_SSID);
 363                 bcast_ssid->tlv.len =
 364                                 cpu_to_le16(sizeof(bcast_ssid->bcast_ctl));
 365                 bcast_ssid->bcast_ctl = bss_cfg->bcast_ssid_ctl;
 366                 cmd_size += sizeof(struct host_cmd_tlv_bcast_ssid);
 367                 tlv += sizeof(struct host_cmd_tlv_bcast_ssid);
 368         }
 369         if (bss_cfg->rates[0]) {
 370                 tlv_rates = (struct host_cmd_tlv_rates *)tlv;
 371                 tlv_rates->tlv.type = cpu_to_le16(TLV_TYPE_UAP_RATES);
 372
 373                 for (i = 0; i < MWIFIEX_SUPPORTED_RATES && bss_cfg->rates[i];
 374                      i++)
 375                         tlv_rates->rates[i] = bss_cfg->rates[i];
 376
 377                 tlv_rates->tlv.len = cpu_to_le16(i);
 378                 cmd_size += sizeof(struct host_cmd_tlv_rates) + i;
 379                 tlv += sizeof(struct host_cmd_tlv_rates) + i;
 380         }
 381         if (bss_cfg->channel &&
 382             ((bss_cfg->band_cfg == BAND_CONFIG_BG &&
 383               bss_cfg->channel <= MAX_CHANNEL_BAND_BG) ||
 384             (bss_cfg->band_cfg == BAND_CONFIG_A &&
 385              bss_cfg->channel <= MAX_CHANNEL_BAND_A))) {
 386                 chan_band = (struct host_cmd_tlv_channel_band *)tlv;
 387                 chan_band->tlv.type = cpu_to_le16(TLV_TYPE_CHANNELBANDLIST);
 388                 chan_band->tlv.len =
 389                         cpu_to_le16(sizeof(struct host_cmd_tlv_channel_band) -
 390                                     sizeof(struct host_cmd_tlv));
 391                 chan_band->band_config = bss_cfg->band_cfg;
 392                 chan_band->channel = bss_cfg->channel;
 393                 cmd_size += sizeof(struct host_cmd_tlv_channel_band);
 394                 tlv += sizeof(struct host_cmd_tlv_channel_band);
 395         }
 396         if (bss_cfg->beacon_period >= MIN_BEACON_PERIOD &&
 397             bss_cfg->beacon_period <= MAX_BEACON_PERIOD) {
 398                 beacon_period = (struct host_cmd_tlv_beacon_period *)tlv;
 399                 beacon_period->tlv.type =
 400                                         cpu_to_le16(TLV_TYPE_UAP_BEACON_PERIOD);
 401                 beacon_period->tlv.len =
 402                         cpu_to_le16(sizeof(struct host_cmd_tlv_beacon_period) -
 403                                     sizeof(struct host_cmd_tlv));
 404                 beacon_period->period = cpu_to_le16(bss_cfg->beacon_period);
 405                 cmd_size += sizeof(struct host_cmd_tlv_beacon_period);
 406                 tlv += sizeof(struct host_cmd_tlv_beacon_period);
 407         }
 408         if (bss_cfg->dtim_period >= MIN_DTIM_PERIOD &&
 409             bss_cfg->dtim_period <= MAX_DTIM_PERIOD) {
 410                 dtim_period = (struct host_cmd_tlv_dtim_period *)tlv;
 411                 dtim_period->tlv.type = cpu_to_le16(TLV_TYPE_UAP_DTIM_PERIOD);
 412                 dtim_period->tlv.len =
 413                         cpu_to_le16(sizeof(struct host_cmd_tlv_dtim_period) -
 414                                     sizeof(struct host_cmd_tlv));
 415                 dtim_period->period = bss_cfg->dtim_period;
 416                 cmd_size += sizeof(struct host_cmd_tlv_dtim_period);
 417                 tlv += sizeof(struct host_cmd_tlv_dtim_period);
 418         }
 419         if (bss_cfg->rts_threshold <= MWIFIEX_RTS_MAX_VALUE) {
 420                 rts_threshold = (struct host_cmd_tlv_rts_threshold *)tlv;
 421                 rts_threshold->tlv.type =
 422                                         cpu_to_le16(TLV_TYPE_UAP_RTS_THRESHOLD);
 423                 rts_threshold->tlv.len =
 424                         cpu_to_le16(sizeof(struct host_cmd_tlv_rts_threshold) -
 425                                     sizeof(struct host_cmd_tlv));
 426                 rts_threshold->rts_thr = cpu_to_le16(bss_cfg->rts_threshold);
 427                 cmd_size += sizeof(struct host_cmd_tlv_frag_threshold);
 428                 tlv += sizeof(struct host_cmd_tlv_frag_threshold);
 429         }
 430         if ((bss_cfg->frag_threshold >= MWIFIEX_FRAG_MIN_VALUE) &&
 431             (bss_cfg->frag_threshold <= MWIFIEX_FRAG_MAX_VALUE)) {
 432                 frag_threshold = (struct host_cmd_tlv_frag_threshold *)tlv;
 433                 frag_threshold->tlv.type =
 434                                 cpu_to_le16(TLV_TYPE_UAP_FRAG_THRESHOLD);
 435                 frag_threshold->tlv.len =
 436                         cpu_to_le16(sizeof(struct host_cmd_tlv_frag_threshold) -
 437                                     sizeof(struct host_cmd_tlv));
 438                 frag_threshold->frag_thr = cpu_to_le16(bss_cfg->frag_threshold);
 439                 cmd_size += sizeof(struct host_cmd_tlv_frag_threshold);
 440                 tlv += sizeof(struct host_cmd_tlv_frag_threshold);
 441         }
 442         if (bss_cfg->retry_limit <= MWIFIEX_RETRY_LIMIT) {
 443                 retry_limit = (struct host_cmd_tlv_retry_limit *)tlv;
 444                 retry_limit->tlv.type = cpu_to_le16(TLV_TYPE_UAP_RETRY_LIMIT);
 445                 retry_limit->tlv.len =
 446                         cpu_to_le16(sizeof(struct host_cmd_tlv_retry_limit) -
 447                                     sizeof(struct host_cmd_tlv));
 448                 retry_limit->limit = (u8)bss_cfg->retry_limit;
 449                 cmd_size += sizeof(struct host_cmd_tlv_retry_limit);
 450                 tlv += sizeof(struct host_cmd_tlv_retry_limit);
 451         }
 452         if ((bss_cfg->protocol & PROTOCOL_WPA) ||
 453             (bss_cfg->protocol & PROTOCOL_WPA2) ||
 454             (bss_cfg->protocol & PROTOCOL_EAP))
 455                 mwifiex_uap_bss_wpa(&tlv, cmd_buf, &cmd_size);
 456         else
 457                 mwifiex_uap_bss_wep(&tlv, cmd_buf, &cmd_size);
 458
 459         if ((bss_cfg->auth_mode <= WLAN_AUTH_SHARED_KEY) ||
 460             (bss_cfg->auth_mode == MWIFIEX_AUTH_MODE_AUTO)) {
 461                 auth_type = (struct host_cmd_tlv_auth_type *)tlv;
 462                 auth_type->tlv.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 463                 auth_type->tlv.len =
 464                         cpu_to_le16(sizeof(struct host_cmd_tlv_auth_type) -
 465                         sizeof(struct host_cmd_tlv));
 466                 auth_type->auth_type = (u8)bss_cfg->auth_mode;
 467                 cmd_size += sizeof(struct host_cmd_tlv_auth_type);
 468                 tlv += sizeof(struct host_cmd_tlv_auth_type);
 469         }
 470         if (bss_cfg->protocol) {
 471                 encrypt_protocol = (struct host_cmd_tlv_encrypt_protocol *)tlv;
 472                 encrypt_protocol->tlv.type =
 473                         cpu_to_le16(TLV_TYPE_UAP_ENCRY_PROTOCOL);
 474                 encrypt_protocol->tlv.len =
 475                         cpu_to_le16(sizeof(struct host_cmd_tlv_encrypt_protocol)
 476                         - sizeof(struct host_cmd_tlv));
 477                 encrypt_protocol->proto = cpu_to_le16(bss_cfg->protocol);
 478                 cmd_size += sizeof(struct host_cmd_tlv_encrypt_protocol);
 479                 tlv += sizeof(struct host_cmd_tlv_encrypt_protocol);
 480         }
 481
 482         if (bss_cfg->ht_cap.cap_info) {
 483                 htcap = (struct mwifiex_ie_types_htcap *)tlv;
 484                 htcap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 485                 htcap->header.len =
 486                                 cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 487                 htcap->ht_cap.cap_info = bss_cfg->ht_cap.cap_info;
 488                 htcap->ht_cap.ampdu_params_info =
 489                                              bss_cfg->ht_cap.ampdu_params_info;
 490                 memcpy(&htcap->ht_cap.mcs, &bss_cfg->ht_cap.mcs,
 491                        sizeof(struct ieee80211_mcs_info));
 492                 htcap->ht_cap.extended_ht_cap_info =
 493                                         bss_cfg->ht_cap.extended_ht_cap_info;
 494                 htcap->ht_cap.tx_BF_cap_info = bss_cfg->ht_cap.tx_BF_cap_info;
 495                 htcap->ht_cap.antenna_selection_info =
 496                                         bss_cfg->ht_cap.antenna_selection_info;
 497                 cmd_size += sizeof(struct mwifiex_ie_types_htcap);
 498                 tlv += sizeof(struct mwifiex_ie_types_htcap);
 499         }
 500
 501         if (bss_cfg->sta_ao_timer) {
 502                 ao_timer = (struct host_cmd_tlv_ageout_timer *)tlv;
 503                 ao_timer->tlv.type = cpu_to_le16(TLV_TYPE_UAP_AO_TIMER);
 504                 ao_timer->tlv.len = cpu_to_le16(sizeof(*ao_timer) -
 505                                                 sizeof(struct host_cmd_tlv));
 506                 ao_timer->sta_ao_timer = cpu_to_le32(bss_cfg->sta_ao_timer);
 507                 cmd_size += sizeof(*ao_timer);
 508                 tlv += sizeof(*ao_timer);
 509         }
 510
 511         if (bss_cfg->ps_sta_ao_timer) {
 512                 ps_ao_timer = (struct host_cmd_tlv_ageout_timer *)tlv;
 513                 ps_ao_timer->tlv.type = cpu_to_le16(TLV_TYPE_UAP_PS_AO_TIMER);
 514                 ps_ao_timer->tlv.len = cpu_to_le16(sizeof(*ps_ao_timer) -
 515                                                    sizeof(struct host_cmd_tlv));
 516                 ps_ao_timer->sta_ao_timer =
 517                                         cpu_to_le32(bss_cfg->ps_sta_ao_timer);
 518                 cmd_size += sizeof(*ps_ao_timer);
 519                 tlv += sizeof(*ps_ao_timer);
 520         }
 521
 522         *param_size = cmd_size;
 523
 524         return 0;
 525 }
 526
 527 /* This function parses custom IEs from IE list and prepares command buffer */
 528 static int mwifiex_uap_custom_ie_prepare(u8 *tlv, void *cmd_buf, u16 *ie_size)
 529 {
 530         struct mwifiex_ie_list *ap_ie = cmd_buf;
 531         struct host_cmd_tlv *tlv_ie = (struct host_cmd_tlv *)tlv;
 532
 533         if (!ap_ie || !ap_ie->len || !ap_ie->ie_list)
 534                 return -1;
 535
 536         *ie_size += le16_to_cpu(ap_ie->len) + sizeof(struct host_cmd_tlv);
 537
 538         tlv_ie->type = cpu_to_le16(TLV_TYPE_MGMT_IE);
 539         tlv_ie->len = ap_ie->len;
 540         tlv += sizeof(struct host_cmd_tlv);
 541
 542         memcpy(tlv, ap_ie->ie_list, le16_to_cpu(ap_ie->len));
 543
 544         return 0;
 545 }
 546
 547 /* Parse AP config structure and prepare TLV based command structure
 548  * to be sent to FW for uAP configuration
 549  */
 550 static int
 551 mwifiex_cmd_uap_sys_config(struct host_cmd_ds_command *cmd, u16 cmd_action,
 552                            u32 type, void *cmd_buf)
 553 {
 554         u8 *tlv;
 555         u16 cmd_size, param_size, ie_size;
 556         struct host_cmd_ds_sys_config *sys_cfg;
 557
 558         cmd->command = cpu_to_le16(HostCmd_CMD_UAP_SYS_CONFIG);
 559         cmd_size = (u16)(sizeof(struct host_cmd_ds_sys_config) + S_DS_GEN);
 560         sys_cfg = (struct host_cmd_ds_sys_config *)&cmd->params.uap_sys_config;
 561         sys_cfg->action = cpu_to_le16(cmd_action);
 562         tlv = sys_cfg->tlv;
 563
 564         switch (type) {
 565         case UAP_BSS_PARAMS_I:
 566                 param_size = cmd_size;
 567                 if (mwifiex_uap_bss_param_prepare(tlv, cmd_buf, &param_size))
 568                         return -1;
 569                 cmd->size = cpu_to_le16(param_size);
 570                 break;
 571         case UAP_CUSTOM_IE_I:
 572                 ie_size = cmd_size;
 573                 if (mwifiex_uap_custom_ie_prepare(tlv, cmd_buf, &ie_size))
 574                         return -1;
 575                 cmd->size = cpu_to_le16(ie_size);
 576                 break;
 577         default:
 578                 return -1;
 579         }
 580
 581         return 0;
 582 }
 583
 584 /* This function prepares the AP specific commands before sending them
 585  * to the firmware.
 586  * This is a generic function which calls specific command preparation
 587  * routines based upon the command number.
 588  */
 589 int mwifiex_uap_prepare_cmd(struct mwifiex_private *priv, u16 cmd_no,
 590                             u16 cmd_action, u32 type,
 591                             void *data_buf, void *cmd_buf)
 592 {
 593         struct host_cmd_ds_command *cmd = cmd_buf;
 594
 595         switch (cmd_no) {
 596         case HostCmd_CMD_UAP_SYS_CONFIG:
 597                 if (mwifiex_cmd_uap_sys_config(cmd, cmd_action, type, data_buf))
 598                         return -1;
 599                 break;
 600         case HostCmd_CMD_UAP_BSS_START:
 601         case HostCmd_CMD_UAP_BSS_STOP:
 602                 cmd->command = cpu_to_le16(cmd_no);
 603                 cmd->size = cpu_to_le16(S_DS_GEN);
 604                 break;
 605         default:
 606                 dev_err(priv->adapter->dev,
 607                         "PREP_CMD: unknown cmd %#x\n", cmd_no);
 608                 return -1;
 609         }
 610
 611         return 0;
 612 }