drivers/net/wireless/mwifiex/uap_cmd.c - kernel/msm-4.19 - Gitiles

 /*
  * Marvell Wireless LAN device driver: AP specific command handling
  *
  * Copyright (C) 2012, Marvell International Ltd.
  *
  * This software file (the "File") is distributed by Marvell International
  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
  * (the "License").  You may use, redistribute and/or modify this File in
  * accordance with the terms and conditions of the License, a copy of which
  * is available by writing to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  *
  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  * this warranty disclaimer.
  */

 #include "main.h"

 /* This function parses security related parameters from cfg80211_ap_settings
  * and sets into FW understandable bss_config structure.
  */
 int mwifiex_set_secure_params(struct mwifiex_private *priv,
 			      struct mwifiex_uap_bss_param *bss_config,
 			      struct cfg80211_ap_settings *params) {
 	int i;
 	struct mwifiex_wep_key wep_key;

 	if (!params->privacy) {
 		bss_config->protocol = PROTOCOL_NO_SECURITY;
 		bss_config->key_mgmt = KEY_MGMT_NONE;
 		bss_config->wpa_cfg.length = 0;
 		priv->sec_info.wep_enabled = 0;
 		priv->sec_info.wpa_enabled = 0;
 		priv->sec_info.wpa2_enabled = 0;

 		return 0;
 	}

 	switch (params->auth_type) {
 	case NL80211_AUTHTYPE_OPEN_SYSTEM:
 		bss_config->auth_mode = WLAN_AUTH_OPEN;
 		break;
 	case NL80211_AUTHTYPE_SHARED_KEY:
 		bss_config->auth_mode = WLAN_AUTH_SHARED_KEY;
 		break;
 	case NL80211_AUTHTYPE_NETWORK_EAP:
 		bss_config->auth_mode = WLAN_AUTH_LEAP;
 		break;
 	default:
 		bss_config->auth_mode = MWIFIEX_AUTH_MODE_AUTO;
 		break;
 	}

 	bss_config->key_mgmt_operation |= KEY_MGMT_ON_HOST;

 	for (i = 0; i < params->crypto.n_akm_suites; i++) {
 		switch (params->crypto.akm_suites[i]) {
 		case WLAN_AKM_SUITE_8021X:
 			if (params->crypto.wpa_versions &
 			    NL80211_WPA_VERSION_1) {
 				bss_config->protocol = PROTOCOL_WPA;
 				bss_config->key_mgmt = KEY_MGMT_EAP;
 			}
 			if (params->crypto.wpa_versions &
 			    NL80211_WPA_VERSION_2) {
 				bss_config->protocol |= PROTOCOL_WPA2;
 				bss_config->key_mgmt = KEY_MGMT_EAP;
 			}
 			break;
 		case WLAN_AKM_SUITE_PSK:
 			if (params->crypto.wpa_versions &
 			    NL80211_WPA_VERSION_1) {
 				bss_config->protocol = PROTOCOL_WPA;
 				bss_config->key_mgmt = KEY_MGMT_PSK;
 			}
 			if (params->crypto.wpa_versions &
 			    NL80211_WPA_VERSION_2) {
 				bss_config->protocol |= PROTOCOL_WPA2;
 				bss_config->key_mgmt = KEY_MGMT_PSK;
 			}
 			break;
 		default:
 			break;
 		}
 	}
 	for (i = 0; i < params->crypto.n_ciphers_pairwise; i++) {
 		switch (params->crypto.ciphers_pairwise[i]) {
 		case WLAN_CIPHER_SUITE_WEP40:
 		case WLAN_CIPHER_SUITE_WEP104:
 			break;
 		case WLAN_CIPHER_SUITE_TKIP:
 			if (params->crypto.wpa_versions & NL80211_WPA_VERSION_1)
 				bss_config->wpa_cfg.pairwise_cipher_wpa |=
 								CIPHER_TKIP;
 			if (params->crypto.wpa_versions & NL80211_WPA_VERSION_2)
 				bss_config->wpa_cfg.pairwise_cipher_wpa2 |=
 								CIPHER_TKIP;
 			break;
 		case WLAN_CIPHER_SUITE_CCMP:
 			if (params->crypto.wpa_versions & NL80211_WPA_VERSION_1)
 				bss_config->wpa_cfg.pairwise_cipher_wpa |=
 								CIPHER_AES_CCMP;
 			if (params->crypto.wpa_versions & NL80211_WPA_VERSION_2)
 				bss_config->wpa_cfg.pairwise_cipher_wpa2 |=
 								CIPHER_AES_CCMP;
 		default:
 			break;
 		}
 	}

 	switch (params->crypto.cipher_group) {
 	case WLAN_CIPHER_SUITE_WEP40:
 	case WLAN_CIPHER_SUITE_WEP104:
 		if (priv->sec_info.wep_enabled) {
 			bss_config->protocol = PROTOCOL_STATIC_WEP;
 			bss_config->key_mgmt = KEY_MGMT_NONE;
 			bss_config->wpa_cfg.length = 0;

 			for (i = 0; i < NUM_WEP_KEYS; i++) {
 				wep_key = priv->wep_key[i];
 				bss_config->wep_cfg[i].key_index = i;

 				if (priv->wep_key_curr_index == i)
 					bss_config->wep_cfg[i].is_default = 1;
 				else
 					bss_config->wep_cfg[i].is_default = 0;

 				bss_config->wep_cfg[i].length =
 							     wep_key.key_length;
 				memcpy(&bss_config->wep_cfg[i].key,
 				       &wep_key.key_material,
 				       wep_key.key_length);
 			}
 		}
 		break;
 	case WLAN_CIPHER_SUITE_TKIP:
 		bss_config->wpa_cfg.group_cipher = CIPHER_TKIP;
 		break;
 	case WLAN_CIPHER_SUITE_CCMP:
 		bss_config->wpa_cfg.group_cipher = CIPHER_AES_CCMP;
 		break;
 	default:
 		break;
 	}

 	return 0;
 }

 /* This function updates 11n related parameters from IE and sets them into
  * bss_config structure.
  */
 void
 mwifiex_set_ht_params(struct mwifiex_private *priv,
 		      struct mwifiex_uap_bss_param *bss_cfg,
 		      struct cfg80211_ap_settings *params)
 {
 	const u8 *ht_ie;

 	if (!ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
 		return;

 	ht_ie = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, params->beacon.tail,
 				 params->beacon.tail_len);
 	if (ht_ie) {
 		memcpy(&bss_cfg->ht_cap, ht_ie + 2,
 		       sizeof(struct ieee80211_ht_cap));
 	} else {
 		memset(&bss_cfg->ht_cap , 0, sizeof(struct ieee80211_ht_cap));
 		bss_cfg->ht_cap.cap_info = cpu_to_le16(MWIFIEX_DEF_HT_CAP);
 		bss_cfg->ht_cap.ampdu_params_info = MWIFIEX_DEF_AMPDU;
 	}

 	return;
 }

 /* This function initializes some of mwifiex_uap_bss_param variables.
  * This helps FW in ignoring invalid values. These values may or may not
  * be get updated to valid ones at later stage.
  */
 void mwifiex_set_sys_config_invalid_data(struct mwifiex_uap_bss_param *config)
 {
 	config->bcast_ssid_ctl = 0x7F;
 	config->radio_ctl = 0x7F;
 	config->dtim_period = 0x7F;
 	config->beacon_period = 0x7FFF;
 	config->auth_mode = 0x7F;
 	config->rts_threshold = 0x7FFF;
 	config->frag_threshold = 0x7FFF;
 	config->retry_limit = 0x7F;
 }

 /* This function parses BSS related parameters from structure
  * and prepares TLVs specific to WPA/WPA2 security.
  * These TLVs are appended to command buffer.
  */
 static void
 mwifiex_uap_bss_wpa(u8 **tlv_buf, void *cmd_buf, u16 *param_size)
 {
 	struct host_cmd_tlv_pwk_cipher *pwk_cipher;
 	struct host_cmd_tlv_gwk_cipher *gwk_cipher;
 	struct host_cmd_tlv_passphrase *passphrase;
 	struct host_cmd_tlv_akmp *tlv_akmp;
 	struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;
 	u16 cmd_size = *param_size;
 	u8 *tlv = *tlv_buf;

 	tlv_akmp = (struct host_cmd_tlv_akmp *)tlv;
 	tlv_akmp->tlv.type = cpu_to_le16(TLV_TYPE_UAP_AKMP);
 	tlv_akmp->tlv.len = cpu_to_le16(sizeof(struct host_cmd_tlv_akmp) -
 					sizeof(struct host_cmd_tlv));
 	tlv_akmp->key_mgmt_operation = cpu_to_le16(bss_cfg->key_mgmt_operation);
 	tlv_akmp->key_mgmt = cpu_to_le16(bss_cfg->key_mgmt);
 	cmd_size += sizeof(struct host_cmd_tlv_akmp);
 	tlv += sizeof(struct host_cmd_tlv_akmp);

 	if (bss_cfg->wpa_cfg.pairwise_cipher_wpa & VALID_CIPHER_BITMAP) {
 		pwk_cipher = (struct host_cmd_tlv_pwk_cipher *)tlv;
 		pwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_PWK_CIPHER);
 		pwk_cipher->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_pwk_cipher) -
 				    sizeof(struct host_cmd_tlv));
 		pwk_cipher->proto = cpu_to_le16(PROTOCOL_WPA);
 		pwk_cipher->cipher = bss_cfg->wpa_cfg.pairwise_cipher_wpa;
 		cmd_size += sizeof(struct host_cmd_tlv_pwk_cipher);
 		tlv += sizeof(struct host_cmd_tlv_pwk_cipher);
 	}

 	if (bss_cfg->wpa_cfg.pairwise_cipher_wpa2 & VALID_CIPHER_BITMAP) {
 		pwk_cipher = (struct host_cmd_tlv_pwk_cipher *)tlv;
 		pwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_PWK_CIPHER);
 		pwk_cipher->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_pwk_cipher) -
 				    sizeof(struct host_cmd_tlv));
 		pwk_cipher->proto = cpu_to_le16(PROTOCOL_WPA2);
 		pwk_cipher->cipher = bss_cfg->wpa_cfg.pairwise_cipher_wpa2;
 		cmd_size += sizeof(struct host_cmd_tlv_pwk_cipher);
 		tlv += sizeof(struct host_cmd_tlv_pwk_cipher);
 	}

 	if (bss_cfg->wpa_cfg.group_cipher & VALID_CIPHER_BITMAP) {
 		gwk_cipher = (struct host_cmd_tlv_gwk_cipher *)tlv;
 		gwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_GWK_CIPHER);
 		gwk_cipher->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_gwk_cipher) -
 				    sizeof(struct host_cmd_tlv));
 		gwk_cipher->cipher = bss_cfg->wpa_cfg.group_cipher;
 		cmd_size += sizeof(struct host_cmd_tlv_gwk_cipher);
 		tlv += sizeof(struct host_cmd_tlv_gwk_cipher);
 	}

 	if (bss_cfg->wpa_cfg.length) {
 		passphrase = (struct host_cmd_tlv_passphrase *)tlv;
 		passphrase->tlv.type = cpu_to_le16(TLV_TYPE_UAP_WPA_PASSPHRASE);
 		passphrase->tlv.len = cpu_to_le16(bss_cfg->wpa_cfg.length);
 		memcpy(passphrase->passphrase, bss_cfg->wpa_cfg.passphrase,
 		       bss_cfg->wpa_cfg.length);
 		cmd_size += sizeof(struct host_cmd_tlv) +
 			    bss_cfg->wpa_cfg.length;
 		tlv += sizeof(struct host_cmd_tlv) + bss_cfg->wpa_cfg.length;
 	}

 	*param_size = cmd_size;
 	*tlv_buf = tlv;

 	return;
 }

 /* This function parses BSS related parameters from structure
  * and prepares TLVs specific to WEP encryption.
  * These TLVs are appended to command buffer.
  */
 static void
 mwifiex_uap_bss_wep(u8 **tlv_buf, void *cmd_buf, u16 *param_size)
 {
 	struct host_cmd_tlv_wep_key *wep_key;
 	u16 cmd_size = *param_size;
 	int i;
 	u8 *tlv = *tlv_buf;
 	struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;

 	for (i = 0; i < NUM_WEP_KEYS; i++) {
 		if (bss_cfg->wep_cfg[i].length &&
 		    (bss_cfg->wep_cfg[i].length == WLAN_KEY_LEN_WEP40 ||
 		     bss_cfg->wep_cfg[i].length == WLAN_KEY_LEN_WEP104)) {
 			wep_key = (struct host_cmd_tlv_wep_key *)tlv;
 			wep_key->tlv.type = cpu_to_le16(TLV_TYPE_UAP_WEP_KEY);
 			wep_key->tlv.len =
 				cpu_to_le16(bss_cfg->wep_cfg[i].length + 2);
 			wep_key->key_index = bss_cfg->wep_cfg[i].key_index;
 			wep_key->is_default = bss_cfg->wep_cfg[i].is_default;
 			memcpy(wep_key->key, bss_cfg->wep_cfg[i].key,
 			       bss_cfg->wep_cfg[i].length);
 			cmd_size += sizeof(struct host_cmd_tlv) + 2 +
 				    bss_cfg->wep_cfg[i].length;
 			tlv += sizeof(struct host_cmd_tlv) + 2 +
 				    bss_cfg->wep_cfg[i].length;
 		}
 	}

 	*param_size = cmd_size;
 	*tlv_buf = tlv;

 	return;
 }

 /* This function parses BSS related parameters from structure
  * and prepares TLVs. These TLVs are appended to command buffer.
 */
 static int
 mwifiex_uap_bss_param_prepare(u8 *tlv, void *cmd_buf, u16 *param_size)
 {
 	struct host_cmd_tlv_dtim_period *dtim_period;
 	struct host_cmd_tlv_beacon_period *beacon_period;
 	struct host_cmd_tlv_ssid *ssid;
 	struct host_cmd_tlv_bcast_ssid *bcast_ssid;
 	struct host_cmd_tlv_channel_band *chan_band;
 	struct host_cmd_tlv_frag_threshold *frag_threshold;
 	struct host_cmd_tlv_rts_threshold *rts_threshold;
 	struct host_cmd_tlv_retry_limit *retry_limit;
 	struct host_cmd_tlv_encrypt_protocol *encrypt_protocol;
 	struct host_cmd_tlv_auth_type *auth_type;
 	struct mwifiex_ie_types_htcap *htcap;
 	struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;
 	u16 cmd_size = *param_size;

 	if (bss_cfg->ssid.ssid_len) {
 		ssid = (struct host_cmd_tlv_ssid *)tlv;
 		ssid->tlv.type = cpu_to_le16(TLV_TYPE_UAP_SSID);
 		ssid->tlv.len = cpu_to_le16((u16)bss_cfg->ssid.ssid_len);
 		memcpy(ssid->ssid, bss_cfg->ssid.ssid, bss_cfg->ssid.ssid_len);
 		cmd_size += sizeof(struct host_cmd_tlv) +
 			    bss_cfg->ssid.ssid_len;
 		tlv += sizeof(struct host_cmd_tlv) + bss_cfg->ssid.ssid_len;

 		bcast_ssid = (struct host_cmd_tlv_bcast_ssid *)tlv;
 		bcast_ssid->tlv.type = cpu_to_le16(TLV_TYPE_UAP_BCAST_SSID);
 		bcast_ssid->tlv.len =
 				cpu_to_le16(sizeof(bcast_ssid->bcast_ctl));
 		bcast_ssid->bcast_ctl = bss_cfg->bcast_ssid_ctl;
 		cmd_size += sizeof(struct host_cmd_tlv_bcast_ssid);
 		tlv += sizeof(struct host_cmd_tlv_bcast_ssid);
 	}
 	if (bss_cfg->channel && bss_cfg->channel <= MAX_CHANNEL_BAND_BG) {
 		chan_band = (struct host_cmd_tlv_channel_band *)tlv;
 		chan_band->tlv.type = cpu_to_le16(TLV_TYPE_CHANNELBANDLIST);
 		chan_band->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_channel_band) -
 				    sizeof(struct host_cmd_tlv));
 		chan_band->band_config = bss_cfg->band_cfg;
 		chan_band->channel = bss_cfg->channel;
 		cmd_size += sizeof(struct host_cmd_tlv_channel_band);
 		tlv += sizeof(struct host_cmd_tlv_channel_band);
 	}
 	if (bss_cfg->beacon_period >= MIN_BEACON_PERIOD &&
 	    bss_cfg->beacon_period <= MAX_BEACON_PERIOD) {
 		beacon_period = (struct host_cmd_tlv_beacon_period *)tlv;
 		beacon_period->tlv.type =
 					cpu_to_le16(TLV_TYPE_UAP_BEACON_PERIOD);
 		beacon_period->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_beacon_period) -
 				    sizeof(struct host_cmd_tlv));
 		beacon_period->period = cpu_to_le16(bss_cfg->beacon_period);
 		cmd_size += sizeof(struct host_cmd_tlv_beacon_period);
 		tlv += sizeof(struct host_cmd_tlv_beacon_period);
 	}
 	if (bss_cfg->dtim_period >= MIN_DTIM_PERIOD &&
 	    bss_cfg->dtim_period <= MAX_DTIM_PERIOD) {
 		dtim_period = (struct host_cmd_tlv_dtim_period *)tlv;
 		dtim_period->tlv.type = cpu_to_le16(TLV_TYPE_UAP_DTIM_PERIOD);
 		dtim_period->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_dtim_period) -
 				    sizeof(struct host_cmd_tlv));
 		dtim_period->period = bss_cfg->dtim_period;
 		cmd_size += sizeof(struct host_cmd_tlv_dtim_period);
 		tlv += sizeof(struct host_cmd_tlv_dtim_period);
 	}
 	if (bss_cfg->rts_threshold <= MWIFIEX_RTS_MAX_VALUE) {
 		rts_threshold = (struct host_cmd_tlv_rts_threshold *)tlv;
 		rts_threshold->tlv.type =
 					cpu_to_le16(TLV_TYPE_UAP_RTS_THRESHOLD);
 		rts_threshold->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_rts_threshold) -
 				    sizeof(struct host_cmd_tlv));
 		rts_threshold->rts_thr = cpu_to_le16(bss_cfg->rts_threshold);
 		cmd_size += sizeof(struct host_cmd_tlv_frag_threshold);
 		tlv += sizeof(struct host_cmd_tlv_frag_threshold);
 	}
 	if ((bss_cfg->frag_threshold >= MWIFIEX_FRAG_MIN_VALUE) &&
 	    (bss_cfg->frag_threshold <= MWIFIEX_FRAG_MAX_VALUE)) {
 		frag_threshold = (struct host_cmd_tlv_frag_threshold *)tlv;
 		frag_threshold->tlv.type =
 				cpu_to_le16(TLV_TYPE_UAP_FRAG_THRESHOLD);
 		frag_threshold->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_frag_threshold) -
 				    sizeof(struct host_cmd_tlv));
 		frag_threshold->frag_thr = cpu_to_le16(bss_cfg->frag_threshold);
 		cmd_size += sizeof(struct host_cmd_tlv_frag_threshold);
 		tlv += sizeof(struct host_cmd_tlv_frag_threshold);
 	}
 	if (bss_cfg->retry_limit <= MWIFIEX_RETRY_LIMIT) {
 		retry_limit = (struct host_cmd_tlv_retry_limit *)tlv;
 		retry_limit->tlv.type = cpu_to_le16(TLV_TYPE_UAP_RETRY_LIMIT);
 		retry_limit->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_retry_limit) -
 				    sizeof(struct host_cmd_tlv));
 		retry_limit->limit = (u8)bss_cfg->retry_limit;
 		cmd_size += sizeof(struct host_cmd_tlv_retry_limit);
 		tlv += sizeof(struct host_cmd_tlv_retry_limit);
 	}
 	if ((bss_cfg->protocol & PROTOCOL_WPA) ||
 	    (bss_cfg->protocol & PROTOCOL_WPA2) ||
 	    (bss_cfg->protocol & PROTOCOL_EAP))
 		mwifiex_uap_bss_wpa(&tlv, cmd_buf, &cmd_size);
 	else
 		mwifiex_uap_bss_wep(&tlv, cmd_buf, &cmd_size);

 	if ((bss_cfg->auth_mode <= WLAN_AUTH_SHARED_KEY) ||
 	    (bss_cfg->auth_mode == MWIFIEX_AUTH_MODE_AUTO)) {
 		auth_type = (struct host_cmd_tlv_auth_type *)tlv;
 		auth_type->tlv.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
 		auth_type->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_auth_type) -
 			sizeof(struct host_cmd_tlv));
 		auth_type->auth_type = (u8)bss_cfg->auth_mode;
 		cmd_size += sizeof(struct host_cmd_tlv_auth_type);
 		tlv += sizeof(struct host_cmd_tlv_auth_type);
 	}
 	if (bss_cfg->protocol) {
 		encrypt_protocol = (struct host_cmd_tlv_encrypt_protocol *)tlv;
 		encrypt_protocol->tlv.type =
 			cpu_to_le16(TLV_TYPE_UAP_ENCRY_PROTOCOL);
 		encrypt_protocol->tlv.len =
 			cpu_to_le16(sizeof(struct host_cmd_tlv_encrypt_protocol)
 			- sizeof(struct host_cmd_tlv));
 		encrypt_protocol->proto = cpu_to_le16(bss_cfg->protocol);
 		cmd_size += sizeof(struct host_cmd_tlv_encrypt_protocol);
 		tlv += sizeof(struct host_cmd_tlv_encrypt_protocol);
 	}

 	if (bss_cfg->ht_cap.cap_info) {
 		htcap = (struct mwifiex_ie_types_htcap *)tlv;
 		htcap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
 		htcap->header.len =
 				cpu_to_le16(sizeof(struct ieee80211_ht_cap));
 		htcap->ht_cap.cap_info = bss_cfg->ht_cap.cap_info;
 		htcap->ht_cap.ampdu_params_info =
 					     bss_cfg->ht_cap.ampdu_params_info;
 		memcpy(&htcap->ht_cap.mcs, &bss_cfg->ht_cap.mcs,
 		       sizeof(struct ieee80211_mcs_info));
 		htcap->ht_cap.extended_ht_cap_info =
 					bss_cfg->ht_cap.extended_ht_cap_info;
 		htcap->ht_cap.tx_BF_cap_info = bss_cfg->ht_cap.tx_BF_cap_info;
 		htcap->ht_cap.antenna_selection_info =
 					bss_cfg->ht_cap.antenna_selection_info;
 		cmd_size += sizeof(struct mwifiex_ie_types_htcap);
 		tlv += sizeof(struct mwifiex_ie_types_htcap);
 	}

 	*param_size = cmd_size;

 	return 0;
 }

 /* This function parses custom IEs from IE list and prepares command buffer */
 static int mwifiex_uap_custom_ie_prepare(u8 *tlv, void *cmd_buf, u16 *ie_size)
 {
 	struct mwifiex_ie_list *ap_ie = cmd_buf;
 	struct host_cmd_tlv *tlv_ie = (struct host_cmd_tlv *)tlv;

 	if (!ap_ie || !ap_ie->len || !ap_ie->ie_list)
 		return -1;

 	*ie_size += le16_to_cpu(ap_ie->len) + sizeof(struct host_cmd_tlv);

 	tlv_ie->type = cpu_to_le16(TLV_TYPE_MGMT_IE);
 	tlv_ie->len = ap_ie->len;
 	tlv += sizeof(struct host_cmd_tlv);

 	memcpy(tlv, ap_ie->ie_list, le16_to_cpu(ap_ie->len));

 	return 0;
 }

 /* Parse AP config structure and prepare TLV based command structure
  * to be sent to FW for uAP configuration
  */
 static int
 mwifiex_cmd_uap_sys_config(struct host_cmd_ds_command *cmd, u16 cmd_action,
 			   u32 type, void *cmd_buf)
 {
 	u8 *tlv;
 	u16 cmd_size, param_size, ie_size;
 	struct host_cmd_ds_sys_config *sys_cfg;

 	cmd->command = cpu_to_le16(HostCmd_CMD_UAP_SYS_CONFIG);
 	cmd_size = (u16)(sizeof(struct host_cmd_ds_sys_config) + S_DS_GEN);
 	sys_cfg = (struct host_cmd_ds_sys_config *)&cmd->params.uap_sys_config;
 	sys_cfg->action = cpu_to_le16(cmd_action);
 	tlv = sys_cfg->tlv;

 	switch (type) {
 	case UAP_BSS_PARAMS_I:
 		param_size = cmd_size;
 		if (mwifiex_uap_bss_param_prepare(tlv, cmd_buf, &param_size))
 			return -1;
 		cmd->size = cpu_to_le16(param_size);
 		break;
 	case UAP_CUSTOM_IE_I:
 		ie_size = cmd_size;
 		if (mwifiex_uap_custom_ie_prepare(tlv, cmd_buf, &ie_size))
 			return -1;
 		cmd->size = cpu_to_le16(ie_size);
 		break;
 	default:
 		return -1;
 	}

 	return 0;
 }

 /* This function prepares the AP specific commands before sending them
  * to the firmware.
  * This is a generic function which calls specific command preparation
  * routines based upon the command number.
  */
 int mwifiex_uap_prepare_cmd(struct mwifiex_private *priv, u16 cmd_no,
 			    u16 cmd_action, u32 type,
 			    void *data_buf, void *cmd_buf)
 {
 	struct host_cmd_ds_command *cmd = cmd_buf;

 	switch (cmd_no) {
 	case HostCmd_CMD_UAP_SYS_CONFIG:
 		if (mwifiex_cmd_uap_sys_config(cmd, cmd_action, type, data_buf))
 			return -1;
 		break;
 	case HostCmd_CMD_UAP_BSS_START:
 	case HostCmd_CMD_UAP_BSS_STOP:
 		cmd->command = cpu_to_le16(cmd_no);
 		cmd->size = cpu_to_le16(S_DS_GEN);
 		break;
 	default:
 		dev_err(priv->adapter->dev,
 			"PREP_CMD: unknown cmd %#x\n", cmd_no);
 		return -1;
 	}

 	return 0;
 }
	/*
	* Marvell Wireless LAN device driver: AP specific command handling
	*
	* Copyright (C) 2012, Marvell International Ltd.
	*
	* This software file (the "File") is distributed by Marvell International
	* Ltd. under the terms of the GNU General Public License Version 2, June 1991
	* (the "License"). You may use, redistribute and/or modify this File in
	* accordance with the terms and conditions of the License, a copy of which
	* is available by writing to the Free Software Foundation, Inc.,
	* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
	* worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
	*
	* THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
	* IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
	* ARE EXPRESSLY DISCLAIMED. The License provides additional details about
	* this warranty disclaimer.
	*/

	#include "main.h"

	/* This function parses security related parameters from cfg80211_ap_settings
	* and sets into FW understandable bss_config structure.
	*/
	int mwifiex_set_secure_params(struct mwifiex_private *priv,
	struct mwifiex_uap_bss_param *bss_config,
	struct cfg80211_ap_settings *params) {
	int i;
	struct mwifiex_wep_key wep_key;

	if (!params->privacy) {
	bss_config->protocol = PROTOCOL_NO_SECURITY;
	bss_config->key_mgmt = KEY_MGMT_NONE;
	bss_config->wpa_cfg.length = 0;
	priv->sec_info.wep_enabled = 0;
	priv->sec_info.wpa_enabled = 0;
	priv->sec_info.wpa2_enabled = 0;

	return 0;
	}

	switch (params->auth_type) {
	case NL80211_AUTHTYPE_OPEN_SYSTEM:
	bss_config->auth_mode = WLAN_AUTH_OPEN;
	break;
	case NL80211_AUTHTYPE_SHARED_KEY:
	bss_config->auth_mode = WLAN_AUTH_SHARED_KEY;
	break;
	case NL80211_AUTHTYPE_NETWORK_EAP:
	bss_config->auth_mode = WLAN_AUTH_LEAP;
	break;
	default:
	bss_config->auth_mode = MWIFIEX_AUTH_MODE_AUTO;
	break;
	}

	bss_config->key_mgmt_operation \|= KEY_MGMT_ON_HOST;

	for (i = 0; i < params->crypto.n_akm_suites; i++) {
	switch (params->crypto.akm_suites[i]) {
	case WLAN_AKM_SUITE_8021X:
	if (params->crypto.wpa_versions &
	NL80211_WPA_VERSION_1) {
	bss_config->protocol = PROTOCOL_WPA;
	bss_config->key_mgmt = KEY_MGMT_EAP;
	}
	if (params->crypto.wpa_versions &
	NL80211_WPA_VERSION_2) {
	bss_config->protocol \|= PROTOCOL_WPA2;
	bss_config->key_mgmt = KEY_MGMT_EAP;
	}
	break;
	case WLAN_AKM_SUITE_PSK:
	if (params->crypto.wpa_versions &
	NL80211_WPA_VERSION_1) {
	bss_config->protocol = PROTOCOL_WPA;
	bss_config->key_mgmt = KEY_MGMT_PSK;
	}
	if (params->crypto.wpa_versions &
	NL80211_WPA_VERSION_2) {
	bss_config->protocol \|= PROTOCOL_WPA2;
	bss_config->key_mgmt = KEY_MGMT_PSK;
	}
	break;
	default:
	break;
	}
	}
	for (i = 0; i < params->crypto.n_ciphers_pairwise; i++) {
	switch (params->crypto.ciphers_pairwise[i]) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
	break;
	case WLAN_CIPHER_SUITE_TKIP:
	if (params->crypto.wpa_versions & NL80211_WPA_VERSION_1)
	bss_config->wpa_cfg.pairwise_cipher_wpa \|=
	CIPHER_TKIP;
	if (params->crypto.wpa_versions & NL80211_WPA_VERSION_2)
	bss_config->wpa_cfg.pairwise_cipher_wpa2 \|=
	CIPHER_TKIP;
	break;
	case WLAN_CIPHER_SUITE_CCMP:
	if (params->crypto.wpa_versions & NL80211_WPA_VERSION_1)
	bss_config->wpa_cfg.pairwise_cipher_wpa \|=
	CIPHER_AES_CCMP;
	if (params->crypto.wpa_versions & NL80211_WPA_VERSION_2)
	bss_config->wpa_cfg.pairwise_cipher_wpa2 \|=
	CIPHER_AES_CCMP;
	default:
	break;
	}
	}

	switch (params->crypto.cipher_group) {
	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
	if (priv->sec_info.wep_enabled) {
	bss_config->protocol = PROTOCOL_STATIC_WEP;
	bss_config->key_mgmt = KEY_MGMT_NONE;
	bss_config->wpa_cfg.length = 0;

	for (i = 0; i < NUM_WEP_KEYS; i++) {
	wep_key = priv->wep_key[i];
	bss_config->wep_cfg[i].key_index = i;

	if (priv->wep_key_curr_index == i)
	bss_config->wep_cfg[i].is_default = 1;
	else
	bss_config->wep_cfg[i].is_default = 0;

	bss_config->wep_cfg[i].length =
	wep_key.key_length;
	memcpy(&bss_config->wep_cfg[i].key,
	&wep_key.key_material,
	wep_key.key_length);
	}
	}
	break;
	case WLAN_CIPHER_SUITE_TKIP:
	bss_config->wpa_cfg.group_cipher = CIPHER_TKIP;
	break;
	case WLAN_CIPHER_SUITE_CCMP:
	bss_config->wpa_cfg.group_cipher = CIPHER_AES_CCMP;
	break;
	default:
	break;
	}

	return 0;
	}

	/* This function updates 11n related parameters from IE and sets them into
	* bss_config structure.
	*/
	void
	mwifiex_set_ht_params(struct mwifiex_private *priv,
	struct mwifiex_uap_bss_param *bss_cfg,
	struct cfg80211_ap_settings *params)
	{
	const u8 *ht_ie;

	if (!ISSUPP_11NENABLED(priv->adapter->fw_cap_info))
	return;

	ht_ie = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, params->beacon.tail,
	params->beacon.tail_len);
	if (ht_ie) {
	memcpy(&bss_cfg->ht_cap, ht_ie + 2,
	sizeof(struct ieee80211_ht_cap));
	} else {
	memset(&bss_cfg->ht_cap , 0, sizeof(struct ieee80211_ht_cap));
	bss_cfg->ht_cap.cap_info = cpu_to_le16(MWIFIEX_DEF_HT_CAP);
	bss_cfg->ht_cap.ampdu_params_info = MWIFIEX_DEF_AMPDU;
	}

	return;
	}

	/* This function initializes some of mwifiex_uap_bss_param variables.
	* This helps FW in ignoring invalid values. These values may or may not
	* be get updated to valid ones at later stage.
	*/
	void mwifiex_set_sys_config_invalid_data(struct mwifiex_uap_bss_param *config)
	{
	config->bcast_ssid_ctl = 0x7F;
	config->radio_ctl = 0x7F;
	config->dtim_period = 0x7F;
	config->beacon_period = 0x7FFF;
	config->auth_mode = 0x7F;
	config->rts_threshold = 0x7FFF;
	config->frag_threshold = 0x7FFF;
	config->retry_limit = 0x7F;
	}

	/* This function parses BSS related parameters from structure
	* and prepares TLVs specific to WPA/WPA2 security.
	* These TLVs are appended to command buffer.
	*/
	static void
	mwifiex_uap_bss_wpa(u8 *tlv_buf, void cmd_buf, u16 *param_size)
	{
	struct host_cmd_tlv_pwk_cipher *pwk_cipher;
	struct host_cmd_tlv_gwk_cipher *gwk_cipher;
	struct host_cmd_tlv_passphrase *passphrase;
	struct host_cmd_tlv_akmp *tlv_akmp;
	struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;
	u16 cmd_size = *param_size;
	u8 tlv = tlv_buf;

	tlv_akmp = (struct host_cmd_tlv_akmp *)tlv;
	tlv_akmp->tlv.type = cpu_to_le16(TLV_TYPE_UAP_AKMP);
	tlv_akmp->tlv.len = cpu_to_le16(sizeof(struct host_cmd_tlv_akmp) -
	sizeof(struct host_cmd_tlv));
	tlv_akmp->key_mgmt_operation = cpu_to_le16(bss_cfg->key_mgmt_operation);
	tlv_akmp->key_mgmt = cpu_to_le16(bss_cfg->key_mgmt);
	cmd_size += sizeof(struct host_cmd_tlv_akmp);
	tlv += sizeof(struct host_cmd_tlv_akmp);

	if (bss_cfg->wpa_cfg.pairwise_cipher_wpa & VALID_CIPHER_BITMAP) {
	pwk_cipher = (struct host_cmd_tlv_pwk_cipher *)tlv;
	pwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_PWK_CIPHER);
	pwk_cipher->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_pwk_cipher) -
	sizeof(struct host_cmd_tlv));
	pwk_cipher->proto = cpu_to_le16(PROTOCOL_WPA);
	pwk_cipher->cipher = bss_cfg->wpa_cfg.pairwise_cipher_wpa;
	cmd_size += sizeof(struct host_cmd_tlv_pwk_cipher);
	tlv += sizeof(struct host_cmd_tlv_pwk_cipher);
	}

	if (bss_cfg->wpa_cfg.pairwise_cipher_wpa2 & VALID_CIPHER_BITMAP) {
	pwk_cipher = (struct host_cmd_tlv_pwk_cipher *)tlv;
	pwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_PWK_CIPHER);
	pwk_cipher->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_pwk_cipher) -
	sizeof(struct host_cmd_tlv));
	pwk_cipher->proto = cpu_to_le16(PROTOCOL_WPA2);
	pwk_cipher->cipher = bss_cfg->wpa_cfg.pairwise_cipher_wpa2;
	cmd_size += sizeof(struct host_cmd_tlv_pwk_cipher);
	tlv += sizeof(struct host_cmd_tlv_pwk_cipher);
	}

	if (bss_cfg->wpa_cfg.group_cipher & VALID_CIPHER_BITMAP) {
	gwk_cipher = (struct host_cmd_tlv_gwk_cipher *)tlv;
	gwk_cipher->tlv.type = cpu_to_le16(TLV_TYPE_GWK_CIPHER);
	gwk_cipher->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_gwk_cipher) -
	sizeof(struct host_cmd_tlv));
	gwk_cipher->cipher = bss_cfg->wpa_cfg.group_cipher;
	cmd_size += sizeof(struct host_cmd_tlv_gwk_cipher);
	tlv += sizeof(struct host_cmd_tlv_gwk_cipher);
	}

	if (bss_cfg->wpa_cfg.length) {
	passphrase = (struct host_cmd_tlv_passphrase *)tlv;
	passphrase->tlv.type = cpu_to_le16(TLV_TYPE_UAP_WPA_PASSPHRASE);
	passphrase->tlv.len = cpu_to_le16(bss_cfg->wpa_cfg.length);
	memcpy(passphrase->passphrase, bss_cfg->wpa_cfg.passphrase,
	bss_cfg->wpa_cfg.length);
	cmd_size += sizeof(struct host_cmd_tlv) +
	bss_cfg->wpa_cfg.length;
	tlv += sizeof(struct host_cmd_tlv) + bss_cfg->wpa_cfg.length;
	}

	*param_size = cmd_size;
	*tlv_buf = tlv;

	return;
	}

	/* This function parses BSS related parameters from structure
	* and prepares TLVs specific to WEP encryption.
	* These TLVs are appended to command buffer.
	*/
	static void
	mwifiex_uap_bss_wep(u8 *tlv_buf, void cmd_buf, u16 *param_size)
	{
	struct host_cmd_tlv_wep_key *wep_key;
	u16 cmd_size = *param_size;
	int i;
	u8 tlv = tlv_buf;
	struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;

	for (i = 0; i < NUM_WEP_KEYS; i++) {
	if (bss_cfg->wep_cfg[i].length &&
	(bss_cfg->wep_cfg[i].length == WLAN_KEY_LEN_WEP40 \|\|
	bss_cfg->wep_cfg[i].length == WLAN_KEY_LEN_WEP104)) {
	wep_key = (struct host_cmd_tlv_wep_key *)tlv;
	wep_key->tlv.type = cpu_to_le16(TLV_TYPE_UAP_WEP_KEY);
	wep_key->tlv.len =
	cpu_to_le16(bss_cfg->wep_cfg[i].length + 2);
	wep_key->key_index = bss_cfg->wep_cfg[i].key_index;
	wep_key->is_default = bss_cfg->wep_cfg[i].is_default;
	memcpy(wep_key->key, bss_cfg->wep_cfg[i].key,
	bss_cfg->wep_cfg[i].length);
	cmd_size += sizeof(struct host_cmd_tlv) + 2 +
	bss_cfg->wep_cfg[i].length;
	tlv += sizeof(struct host_cmd_tlv) + 2 +
	bss_cfg->wep_cfg[i].length;
	}
	}

	*param_size = cmd_size;
	*tlv_buf = tlv;

	return;
	}

	/* This function parses BSS related parameters from structure
	* and prepares TLVs. These TLVs are appended to command buffer.
	*/
	static int
	mwifiex_uap_bss_param_prepare(u8 tlv, void cmd_buf, u16 *param_size)
	{
	struct host_cmd_tlv_dtim_period *dtim_period;
	struct host_cmd_tlv_beacon_period *beacon_period;
	struct host_cmd_tlv_ssid *ssid;
	struct host_cmd_tlv_bcast_ssid *bcast_ssid;
	struct host_cmd_tlv_channel_band *chan_band;
	struct host_cmd_tlv_frag_threshold *frag_threshold;
	struct host_cmd_tlv_rts_threshold *rts_threshold;
	struct host_cmd_tlv_retry_limit *retry_limit;
	struct host_cmd_tlv_encrypt_protocol *encrypt_protocol;
	struct host_cmd_tlv_auth_type *auth_type;
	struct mwifiex_ie_types_htcap *htcap;
	struct mwifiex_uap_bss_param *bss_cfg = cmd_buf;
	u16 cmd_size = *param_size;

	if (bss_cfg->ssid.ssid_len) {
	ssid = (struct host_cmd_tlv_ssid *)tlv;
	ssid->tlv.type = cpu_to_le16(TLV_TYPE_UAP_SSID);
	ssid->tlv.len = cpu_to_le16((u16)bss_cfg->ssid.ssid_len);
	memcpy(ssid->ssid, bss_cfg->ssid.ssid, bss_cfg->ssid.ssid_len);
	cmd_size += sizeof(struct host_cmd_tlv) +
	bss_cfg->ssid.ssid_len;
	tlv += sizeof(struct host_cmd_tlv) + bss_cfg->ssid.ssid_len;

	bcast_ssid = (struct host_cmd_tlv_bcast_ssid *)tlv;
	bcast_ssid->tlv.type = cpu_to_le16(TLV_TYPE_UAP_BCAST_SSID);
	bcast_ssid->tlv.len =
	cpu_to_le16(sizeof(bcast_ssid->bcast_ctl));
	bcast_ssid->bcast_ctl = bss_cfg->bcast_ssid_ctl;
	cmd_size += sizeof(struct host_cmd_tlv_bcast_ssid);
	tlv += sizeof(struct host_cmd_tlv_bcast_ssid);
	}
	if (bss_cfg->channel && bss_cfg->channel <= MAX_CHANNEL_BAND_BG) {
	chan_band = (struct host_cmd_tlv_channel_band *)tlv;
	chan_band->tlv.type = cpu_to_le16(TLV_TYPE_CHANNELBANDLIST);
	chan_band->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_channel_band) -
	sizeof(struct host_cmd_tlv));
	chan_band->band_config = bss_cfg->band_cfg;
	chan_band->channel = bss_cfg->channel;
	cmd_size += sizeof(struct host_cmd_tlv_channel_band);
	tlv += sizeof(struct host_cmd_tlv_channel_band);
	}
	if (bss_cfg->beacon_period >= MIN_BEACON_PERIOD &&
	bss_cfg->beacon_period <= MAX_BEACON_PERIOD) {
	beacon_period = (struct host_cmd_tlv_beacon_period *)tlv;
	beacon_period->tlv.type =
	cpu_to_le16(TLV_TYPE_UAP_BEACON_PERIOD);
	beacon_period->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_beacon_period) -
	sizeof(struct host_cmd_tlv));
	beacon_period->period = cpu_to_le16(bss_cfg->beacon_period);
	cmd_size += sizeof(struct host_cmd_tlv_beacon_period);
	tlv += sizeof(struct host_cmd_tlv_beacon_period);
	}
	if (bss_cfg->dtim_period >= MIN_DTIM_PERIOD &&
	bss_cfg->dtim_period <= MAX_DTIM_PERIOD) {
	dtim_period = (struct host_cmd_tlv_dtim_period *)tlv;
	dtim_period->tlv.type = cpu_to_le16(TLV_TYPE_UAP_DTIM_PERIOD);
	dtim_period->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_dtim_period) -
	sizeof(struct host_cmd_tlv));
	dtim_period->period = bss_cfg->dtim_period;
	cmd_size += sizeof(struct host_cmd_tlv_dtim_period);
	tlv += sizeof(struct host_cmd_tlv_dtim_period);
	}
	if (bss_cfg->rts_threshold <= MWIFIEX_RTS_MAX_VALUE) {
	rts_threshold = (struct host_cmd_tlv_rts_threshold *)tlv;
	rts_threshold->tlv.type =
	cpu_to_le16(TLV_TYPE_UAP_RTS_THRESHOLD);
	rts_threshold->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_rts_threshold) -
	sizeof(struct host_cmd_tlv));
	rts_threshold->rts_thr = cpu_to_le16(bss_cfg->rts_threshold);
	cmd_size += sizeof(struct host_cmd_tlv_frag_threshold);
	tlv += sizeof(struct host_cmd_tlv_frag_threshold);
	}
	if ((bss_cfg->frag_threshold >= MWIFIEX_FRAG_MIN_VALUE) &&
	(bss_cfg->frag_threshold <= MWIFIEX_FRAG_MAX_VALUE)) {
	frag_threshold = (struct host_cmd_tlv_frag_threshold *)tlv;
	frag_threshold->tlv.type =
	cpu_to_le16(TLV_TYPE_UAP_FRAG_THRESHOLD);
	frag_threshold->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_frag_threshold) -
	sizeof(struct host_cmd_tlv));
	frag_threshold->frag_thr = cpu_to_le16(bss_cfg->frag_threshold);
	cmd_size += sizeof(struct host_cmd_tlv_frag_threshold);
	tlv += sizeof(struct host_cmd_tlv_frag_threshold);
	}
	if (bss_cfg->retry_limit <= MWIFIEX_RETRY_LIMIT) {
	retry_limit = (struct host_cmd_tlv_retry_limit *)tlv;
	retry_limit->tlv.type = cpu_to_le16(TLV_TYPE_UAP_RETRY_LIMIT);
	retry_limit->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_retry_limit) -
	sizeof(struct host_cmd_tlv));
	retry_limit->limit = (u8)bss_cfg->retry_limit;
	cmd_size += sizeof(struct host_cmd_tlv_retry_limit);
	tlv += sizeof(struct host_cmd_tlv_retry_limit);
	}
	if ((bss_cfg->protocol & PROTOCOL_WPA) \|\|
	(bss_cfg->protocol & PROTOCOL_WPA2) \|\|
	(bss_cfg->protocol & PROTOCOL_EAP))
	mwifiex_uap_bss_wpa(&tlv, cmd_buf, &cmd_size);
	else
	mwifiex_uap_bss_wep(&tlv, cmd_buf, &cmd_size);

	if ((bss_cfg->auth_mode <= WLAN_AUTH_SHARED_KEY) \|\|
	(bss_cfg->auth_mode == MWIFIEX_AUTH_MODE_AUTO)) {
	auth_type = (struct host_cmd_tlv_auth_type *)tlv;
	auth_type->tlv.type = cpu_to_le16(TLV_TYPE_AUTH_TYPE);
	auth_type->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_auth_type) -
	sizeof(struct host_cmd_tlv));
	auth_type->auth_type = (u8)bss_cfg->auth_mode;
	cmd_size += sizeof(struct host_cmd_tlv_auth_type);
	tlv += sizeof(struct host_cmd_tlv_auth_type);
	}
	if (bss_cfg->protocol) {
	encrypt_protocol = (struct host_cmd_tlv_encrypt_protocol *)tlv;
	encrypt_protocol->tlv.type =
	cpu_to_le16(TLV_TYPE_UAP_ENCRY_PROTOCOL);
	encrypt_protocol->tlv.len =
	cpu_to_le16(sizeof(struct host_cmd_tlv_encrypt_protocol)
	- sizeof(struct host_cmd_tlv));
	encrypt_protocol->proto = cpu_to_le16(bss_cfg->protocol);
	cmd_size += sizeof(struct host_cmd_tlv_encrypt_protocol);
	tlv += sizeof(struct host_cmd_tlv_encrypt_protocol);
	}

	if (bss_cfg->ht_cap.cap_info) {
	htcap = (struct mwifiex_ie_types_htcap *)tlv;
	htcap->header.type = cpu_to_le16(WLAN_EID_HT_CAPABILITY);
	htcap->header.len =
	cpu_to_le16(sizeof(struct ieee80211_ht_cap));
	htcap->ht_cap.cap_info = bss_cfg->ht_cap.cap_info;
	htcap->ht_cap.ampdu_params_info =
	bss_cfg->ht_cap.ampdu_params_info;
	memcpy(&htcap->ht_cap.mcs, &bss_cfg->ht_cap.mcs,
	sizeof(struct ieee80211_mcs_info));
	htcap->ht_cap.extended_ht_cap_info =
	bss_cfg->ht_cap.extended_ht_cap_info;
	htcap->ht_cap.tx_BF_cap_info = bss_cfg->ht_cap.tx_BF_cap_info;
	htcap->ht_cap.antenna_selection_info =
	bss_cfg->ht_cap.antenna_selection_info;
	cmd_size += sizeof(struct mwifiex_ie_types_htcap);
	tlv += sizeof(struct mwifiex_ie_types_htcap);
	}

	*param_size = cmd_size;

	return 0;
	}

	/* This function parses custom IEs from IE list and prepares command buffer */
	static int mwifiex_uap_custom_ie_prepare(u8 tlv, void cmd_buf, u16 *ie_size)
	{
	struct mwifiex_ie_list *ap_ie = cmd_buf;
	struct host_cmd_tlv tlv_ie = (struct host_cmd_tlv )tlv;

	if (!ap_ie \|\| !ap_ie->len \|\| !ap_ie->ie_list)
	return -1;

	*ie_size += le16_to_cpu(ap_ie->len) + sizeof(struct host_cmd_tlv);

	tlv_ie->type = cpu_to_le16(TLV_TYPE_MGMT_IE);
	tlv_ie->len = ap_ie->len;
	tlv += sizeof(struct host_cmd_tlv);

	memcpy(tlv, ap_ie->ie_list, le16_to_cpu(ap_ie->len));

	return 0;
	}

	/* Parse AP config structure and prepare TLV based command structure
	* to be sent to FW for uAP configuration
	*/
	static int
	mwifiex_cmd_uap_sys_config(struct host_cmd_ds_command *cmd, u16 cmd_action,
	u32 type, void *cmd_buf)
	{
	u8 *tlv;
	u16 cmd_size, param_size, ie_size;
	struct host_cmd_ds_sys_config *sys_cfg;

	cmd->command = cpu_to_le16(HostCmd_CMD_UAP_SYS_CONFIG);
	cmd_size = (u16)(sizeof(struct host_cmd_ds_sys_config) + S_DS_GEN);
	sys_cfg = (struct host_cmd_ds_sys_config *)&cmd->params.uap_sys_config;
	sys_cfg->action = cpu_to_le16(cmd_action);
	tlv = sys_cfg->tlv;

	switch (type) {
	case UAP_BSS_PARAMS_I:
	param_size = cmd_size;
	if (mwifiex_uap_bss_param_prepare(tlv, cmd_buf, &param_size))
	return -1;
	cmd->size = cpu_to_le16(param_size);
	break;
	case UAP_CUSTOM_IE_I:
	ie_size = cmd_size;
	if (mwifiex_uap_custom_ie_prepare(tlv, cmd_buf, &ie_size))
	return -1;
	cmd->size = cpu_to_le16(ie_size);
	break;
	default:
	return -1;
	}

	return 0;
	}

	/* This function prepares the AP specific commands before sending them
	* to the firmware.
	* This is a generic function which calls specific command preparation
	* routines based upon the command number.
	*/
	int mwifiex_uap_prepare_cmd(struct mwifiex_private *priv, u16 cmd_no,
	u16 cmd_action, u32 type,
	void data_buf, void cmd_buf)
	{
	struct host_cmd_ds_command *cmd = cmd_buf;

	switch (cmd_no) {
	case HostCmd_CMD_UAP_SYS_CONFIG:
	if (mwifiex_cmd_uap_sys_config(cmd, cmd_action, type, data_buf))
	return -1;
	break;
	case HostCmd_CMD_UAP_BSS_START:
	case HostCmd_CMD_UAP_BSS_STOP:
	cmd->command = cpu_to_le16(cmd_no);
	cmd->size = cpu_to_le16(S_DS_GEN);
	break;
	default:
	dev_err(priv->adapter->dev,
	"PREP_CMD: unknown cmd %#x\n", cmd_no);
	return -1;
	}

	return 0;
	}