/*
 * Marvell Wireless LAN device driver: station command handling
 *
 * Copyright (C) 2011-2014, 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 "decl.h"
#include "ioctl.h"
#include "util.h"
#include "fw.h"
#include "main.h"
#include "wmm.h"
#include "11n.h"
#include "11ac.h"

static bool drcs;
module_param(drcs, bool, 0644);
MODULE_PARM_DESC(drcs, "multi-channel operation:1, single-channel operation:0");

static bool disable_auto_ds;
module_param(disable_auto_ds, bool, 0);
MODULE_PARM_DESC(disable_auto_ds,
                 "deepsleep enabled=0(default), deepsleep disabled=1");
/*
 * This function prepares command to set/get RSSI information.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting data/beacon average factors
 *      - Resetting SNR/NF/RSSI values in private structure
 *      - Ensuring correct endian-ness
 */
static int
mwifiex_cmd_802_11_rssi_info(struct mwifiex_private *priv,
                             struct host_cmd_ds_command *cmd, u16 cmd_action)
{
        cmd->command = cpu_to_le16(HostCmd_CMD_RSSI_INFO);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_rssi_info) +
                                S_DS_GEN);
        cmd->params.rssi_info.action = cpu_to_le16(cmd_action);
        cmd->params.rssi_info.ndata = cpu_to_le16(priv->data_avg_factor);
        cmd->params.rssi_info.nbcn = cpu_to_le16(priv->bcn_avg_factor);

        /* Reset SNR/NF/RSSI values in private structure */
        priv->data_rssi_last = 0;
        priv->data_nf_last = 0;
        priv->data_rssi_avg = 0;
        priv->data_nf_avg = 0;
        priv->bcn_rssi_last = 0;
        priv->bcn_nf_last = 0;
        priv->bcn_rssi_avg = 0;
        priv->bcn_nf_avg = 0;

        return 0;
}

/*
 * This function prepares command to set MAC control.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_mac_control(struct mwifiex_private *priv,
                                   struct host_cmd_ds_command *cmd,
                                   u16 cmd_action, u32 *action)
{
        struct host_cmd_ds_mac_control *mac_ctrl = &cmd->params.mac_ctrl;

        if (cmd_action != HostCmd_ACT_GEN_SET) {
                mwifiex_dbg(priv->adapter, ERROR,
                            "mac_control: only support set cmd\n");
                return -1;
        }

        cmd->command = cpu_to_le16(HostCmd_CMD_MAC_CONTROL);
        cmd->size =
                cpu_to_le16(sizeof(struct host_cmd_ds_mac_control) + S_DS_GEN);
        mac_ctrl->action = cpu_to_le32(*action);

        return 0;
}

/*
 * This function prepares command to set/get SNMP MIB.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting SNMP MIB OID number and value
 *        (as required)
 *      - Ensuring correct endian-ness
 *
 * The following SNMP MIB OIDs are supported -
 *      - FRAG_THRESH_I     : Fragmentation threshold
 *      - RTS_THRESH_I      : RTS threshold
 *      - SHORT_RETRY_LIM_I : Short retry limit
 *      - DOT11D_I          : 11d support
 */
static int mwifiex_cmd_802_11_snmp_mib(struct mwifiex_private *priv,
                                       struct host_cmd_ds_command *cmd,
                                       u16 cmd_action, u32 cmd_oid,
                                       u16 *ul_temp)
{
        struct host_cmd_ds_802_11_snmp_mib *snmp_mib = &cmd->params.smib;

        mwifiex_dbg(priv->adapter, CMD,
                    "cmd: SNMP_CMD: cmd_oid = 0x%x\n", cmd_oid);
        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SNMP_MIB);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_snmp_mib)
                                - 1 + S_DS_GEN);

        snmp_mib->oid = cpu_to_le16((u16)cmd_oid);
        if (cmd_action == HostCmd_ACT_GEN_GET) {
                snmp_mib->query_type = cpu_to_le16(HostCmd_ACT_GEN_GET);
                snmp_mib->buf_size = cpu_to_le16(MAX_SNMP_BUF_SIZE);
                le16_unaligned_add_cpu(&cmd->size, MAX_SNMP_BUF_SIZE);
        } else if (cmd_action == HostCmd_ACT_GEN_SET) {
                snmp_mib->query_type = cpu_to_le16(HostCmd_ACT_GEN_SET);
                snmp_mib->buf_size = cpu_to_le16(sizeof(u16));
                put_unaligned_le16(*ul_temp, snmp_mib->value);
                le16_unaligned_add_cpu(&cmd->size, sizeof(u16));
        }

        mwifiex_dbg(priv->adapter, CMD,
                    "cmd: SNMP_CMD: Action=0x%x, OID=0x%x,\t"
                    "OIDSize=0x%x, Value=0x%x\n",
                    cmd_action, cmd_oid, le16_to_cpu(snmp_mib->buf_size),
                    get_unaligned_le16(snmp_mib->value));
        return 0;
}

/*
 * This function prepares command to get log.
 *
 * Preparation includes -
 *      - Setting command ID and proper size
 *      - Ensuring correct endian-ness
 */
static int
mwifiex_cmd_802_11_get_log(struct host_cmd_ds_command *cmd)
{
        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_GET_LOG);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_get_log) +
                                S_DS_GEN);
        return 0;
}

/*
 * This function prepares command to set/get Tx data rate configuration.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting configuration index, rate scope and rate drop pattern
 *        parameters (as required)
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_tx_rate_cfg(struct mwifiex_private *priv,
                                   struct host_cmd_ds_command *cmd,
                                   u16 cmd_action, u16 *pbitmap_rates)
{
        struct host_cmd_ds_tx_rate_cfg *rate_cfg = &cmd->params.tx_rate_cfg;
        struct mwifiex_rate_scope *rate_scope;
        struct mwifiex_rate_drop_pattern *rate_drop;
        u32 i;

        cmd->command = cpu_to_le16(HostCmd_CMD_TX_RATE_CFG);

        rate_cfg->action = cpu_to_le16(cmd_action);
        rate_cfg->cfg_index = 0;

        rate_scope = (struct mwifiex_rate_scope *) ((u8 *) rate_cfg +
                      sizeof(struct host_cmd_ds_tx_rate_cfg));
        rate_scope->type = cpu_to_le16(TLV_TYPE_RATE_SCOPE);
        rate_scope->length = cpu_to_le16
                (sizeof(*rate_scope) - sizeof(struct mwifiex_ie_types_header));
        if (pbitmap_rates != NULL) {
                rate_scope->hr_dsss_rate_bitmap = cpu_to_le16(pbitmap_rates[0]);
                rate_scope->ofdm_rate_bitmap = cpu_to_le16(pbitmap_rates[1]);
                for (i = 0; i < ARRAY_SIZE(rate_scope->ht_mcs_rate_bitmap); i++)
                        rate_scope->ht_mcs_rate_bitmap[i] =
                                cpu_to_le16(pbitmap_rates[2 + i]);
                if (priv->adapter->fw_api_ver == MWIFIEX_FW_V15) {
                        for (i = 0;
                             i < ARRAY_SIZE(rate_scope->vht_mcs_rate_bitmap);
                             i++)
                                rate_scope->vht_mcs_rate_bitmap[i] =
                                        cpu_to_le16(pbitmap_rates[10 + i]);
                }
        } else {
                rate_scope->hr_dsss_rate_bitmap =
                        cpu_to_le16(priv->bitmap_rates[0]);
                rate_scope->ofdm_rate_bitmap =
                        cpu_to_le16(priv->bitmap_rates[1]);
                for (i = 0; i < ARRAY_SIZE(rate_scope->ht_mcs_rate_bitmap); i++)
                        rate_scope->ht_mcs_rate_bitmap[i] =
                                cpu_to_le16(priv->bitmap_rates[2 + i]);
                if (priv->adapter->fw_api_ver == MWIFIEX_FW_V15) {
                        for (i = 0;
                             i < ARRAY_SIZE(rate_scope->vht_mcs_rate_bitmap);
                             i++)
                                rate_scope->vht_mcs_rate_bitmap[i] =
                                        cpu_to_le16(priv->bitmap_rates[10 + i]);
                }
        }

        rate_drop = (struct mwifiex_rate_drop_pattern *) ((u8 *) rate_scope +
                                             sizeof(struct mwifiex_rate_scope));
        rate_drop->type = cpu_to_le16(TLV_TYPE_RATE_DROP_CONTROL);
        rate_drop->length = cpu_to_le16(sizeof(rate_drop->rate_drop_mode));
        rate_drop->rate_drop_mode = 0;

        cmd->size =
                cpu_to_le16(S_DS_GEN + sizeof(struct host_cmd_ds_tx_rate_cfg) +
                            sizeof(struct mwifiex_rate_scope) +
                            sizeof(struct mwifiex_rate_drop_pattern));

        return 0;
}

/*
 * This function prepares command to set/get Tx power configuration.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting Tx power mode, power group TLV
 *        (as required)
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_tx_power_cfg(struct host_cmd_ds_command *cmd,
                                    u16 cmd_action,
                                    struct host_cmd_ds_txpwr_cfg *txp)
{
        struct mwifiex_types_power_group *pg_tlv;
        struct host_cmd_ds_txpwr_cfg *cmd_txp_cfg = &cmd->params.txp_cfg;

        cmd->command = cpu_to_le16(HostCmd_CMD_TXPWR_CFG);
        cmd->size =
                cpu_to_le16(S_DS_GEN + sizeof(struct host_cmd_ds_txpwr_cfg));
        switch (cmd_action) {
        case HostCmd_ACT_GEN_SET:
                if (txp->mode) {
                        pg_tlv = (struct mwifiex_types_power_group
                                  *) ((unsigned long) txp +
                                     sizeof(struct host_cmd_ds_txpwr_cfg));
                        memmove(cmd_txp_cfg, txp,
                                sizeof(struct host_cmd_ds_txpwr_cfg) +
                                sizeof(struct mwifiex_types_power_group) +
                                le16_to_cpu(pg_tlv->length));

                        pg_tlv = (struct mwifiex_types_power_group *) ((u8 *)
                                  cmd_txp_cfg +
                                  sizeof(struct host_cmd_ds_txpwr_cfg));
                        cmd->size = cpu_to_le16(le16_to_cpu(cmd->size) +
                                  sizeof(struct mwifiex_types_power_group) +
                                  le16_to_cpu(pg_tlv->length));
                } else {
                        memmove(cmd_txp_cfg, txp, sizeof(*txp));
                }
                cmd_txp_cfg->action = cpu_to_le16(cmd_action);
                break;
        case HostCmd_ACT_GEN_GET:
                cmd_txp_cfg->action = cpu_to_le16(cmd_action);
                break;
        }

        return 0;
}

/*
 * This function prepares command to get RF Tx power.
 */
static int mwifiex_cmd_rf_tx_power(struct mwifiex_private *priv,
                                   struct host_cmd_ds_command *cmd,
                                   u16 cmd_action, void *data_buf)
{
        struct host_cmd_ds_rf_tx_pwr *txp = &cmd->params.txp;

        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_rf_tx_pwr)
                                + S_DS_GEN);
        cmd->command = cpu_to_le16(HostCmd_CMD_RF_TX_PWR);
        txp->action = cpu_to_le16(cmd_action);

        return 0;
}

/*
 * This function prepares command to set rf antenna.
 */
static int mwifiex_cmd_rf_antenna(struct mwifiex_private *priv,
                                  struct host_cmd_ds_command *cmd,
                                  u16 cmd_action,
                                  struct mwifiex_ds_ant_cfg *ant_cfg)
{
        struct host_cmd_ds_rf_ant_mimo *ant_mimo = &cmd->params.ant_mimo;
        struct host_cmd_ds_rf_ant_siso *ant_siso = &cmd->params.ant_siso;

        cmd->command = cpu_to_le16(HostCmd_CMD_RF_ANTENNA);

        switch (cmd_action) {
        case HostCmd_ACT_GEN_SET:
                if (priv->adapter->hw_dev_mcs_support == HT_STREAM_2X2) {
                        cmd->size = cpu_to_le16(sizeof(struct
                                                host_cmd_ds_rf_ant_mimo)
                                                + S_DS_GEN);
                        ant_mimo->action_tx = cpu_to_le16(HostCmd_ACT_SET_TX);
                        ant_mimo->tx_ant_mode = cpu_to_le16((u16)ant_cfg->
                                                            tx_ant);
                        ant_mimo->action_rx = cpu_to_le16(HostCmd_ACT_SET_RX);
                        ant_mimo->rx_ant_mode = cpu_to_le16((u16)ant_cfg->
                                                            rx_ant);
                } else {
                        cmd->size = cpu_to_le16(sizeof(struct
                                                host_cmd_ds_rf_ant_siso) +
                                                S_DS_GEN);
                        ant_siso->action = cpu_to_le16(HostCmd_ACT_SET_BOTH);
                        ant_siso->ant_mode = cpu_to_le16((u16)ant_cfg->tx_ant);
                }
                break;
        case HostCmd_ACT_GEN_GET:
                if (priv->adapter->hw_dev_mcs_support == HT_STREAM_2X2) {
                        cmd->size = cpu_to_le16(sizeof(struct
                                                host_cmd_ds_rf_ant_mimo) +
                                                S_DS_GEN);
                        ant_mimo->action_tx = cpu_to_le16(HostCmd_ACT_GET_TX);
                        ant_mimo->action_rx = cpu_to_le16(HostCmd_ACT_GET_RX);
                } else {
                        cmd->size = cpu_to_le16(sizeof(struct
                                                host_cmd_ds_rf_ant_siso) +
                                                S_DS_GEN);
                        ant_siso->action = cpu_to_le16(HostCmd_ACT_GET_BOTH);
                }
                break;
        }
        return 0;
}

/*
 * This function prepares command to set Host Sleep configuration.
 *
 * Preparation includes -
 *      - Setting command ID and proper size
 *      - Setting Host Sleep action, conditions, ARP filters
 *        (as required)
 *      - Ensuring correct endian-ness
 */
static int
mwifiex_cmd_802_11_hs_cfg(struct mwifiex_private *priv,
                          struct host_cmd_ds_command *cmd,
                          u16 cmd_action,
                          struct mwifiex_hs_config_param *hscfg_param)
{
        struct mwifiex_adapter *adapter = priv->adapter;
        struct host_cmd_ds_802_11_hs_cfg_enh *hs_cfg = &cmd->params.opt_hs_cfg;
        u8 *tlv = (u8 *)hs_cfg + sizeof(struct host_cmd_ds_802_11_hs_cfg_enh);
        struct mwifiex_ps_param_in_hs *psparam_tlv = NULL;
        bool hs_activate = false;
        u16 size;

        if (!hscfg_param)
                /* New Activate command */
                hs_activate = true;
        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_HS_CFG_ENH);

        if (!hs_activate &&
            (hscfg_param->conditions != cpu_to_le32(HS_CFG_CANCEL)) &&
            ((adapter->arp_filter_size > 0) &&
             (adapter->arp_filter_size <= ARP_FILTER_MAX_BUF_SIZE))) {
                mwifiex_dbg(adapter, CMD,
                            "cmd: Attach %d bytes ArpFilter to HSCfg cmd\n",
                            adapter->arp_filter_size);
                memcpy(((u8 *) hs_cfg) +
                       sizeof(struct host_cmd_ds_802_11_hs_cfg_enh),
                       adapter->arp_filter, adapter->arp_filter_size);
                size = adapter->arp_filter_size +
                        sizeof(struct host_cmd_ds_802_11_hs_cfg_enh)
                        + S_DS_GEN;
                tlv = (u8 *)hs_cfg
                        + sizeof(struct host_cmd_ds_802_11_hs_cfg_enh)
                        + adapter->arp_filter_size;
        } else {
                size = S_DS_GEN + sizeof(struct host_cmd_ds_802_11_hs_cfg_enh);
        }
        if (hs_activate) {
                hs_cfg->action = cpu_to_le16(HS_ACTIVATE);
                hs_cfg->params.hs_activate.resp_ctrl = cpu_to_le16(RESP_NEEDED);
        } else {
                hs_cfg->action = cpu_to_le16(HS_CONFIGURE);
                hs_cfg->params.hs_config.conditions = hscfg_param->conditions;
                hs_cfg->params.hs_config.gpio = hscfg_param->gpio;
                hs_cfg->params.hs_config.gap = hscfg_param->gap;

                size += sizeof(struct mwifiex_ps_param_in_hs);
                psparam_tlv = (struct mwifiex_ps_param_in_hs *)tlv;
                psparam_tlv->header.type =
                        cpu_to_le16(TLV_TYPE_PS_PARAMS_IN_HS);
                psparam_tlv->header.len =
                        cpu_to_le16(sizeof(struct mwifiex_ps_param_in_hs)
                                - sizeof(struct mwifiex_ie_types_header));
                psparam_tlv->hs_wake_int = cpu_to_le32(HS_DEF_WAKE_INTERVAL);
                psparam_tlv->hs_inact_timeout =
                        cpu_to_le32(HS_DEF_INACTIVITY_TIMEOUT);

                mwifiex_dbg(adapter, CMD,
                            "cmd: HS_CFG_CMD: condition:0x%x gpio:0x%x gap:0x%x\n",
                            hs_cfg->params.hs_config.conditions,
                            hs_cfg->params.hs_config.gpio,
                            hs_cfg->params.hs_config.gap);
        }
        cmd->size = cpu_to_le16(size);

        return 0;
}

/*
 * This function prepares command to set/get MAC address.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting MAC address (for SET only)
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_802_11_mac_address(struct mwifiex_private *priv,
                                          struct host_cmd_ds_command *cmd,
                                          u16 cmd_action)
{
        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_MAC_ADDRESS);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_mac_address) +
                                S_DS_GEN);
        cmd->result = 0;

        cmd->params.mac_addr.action = cpu_to_le16(cmd_action);

        if (cmd_action == HostCmd_ACT_GEN_SET)
                memcpy(cmd->params.mac_addr.mac_addr, priv->curr_addr,
                       ETH_ALEN);
        return 0;
}

/*
 * This function prepares command to set MAC multicast address.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting MAC multicast address
 *      - Ensuring correct endian-ness
 */
static int
mwifiex_cmd_mac_multicast_adr(struct host_cmd_ds_command *cmd,
                              u16 cmd_action,
                              struct mwifiex_multicast_list *mcast_list)
{
        struct host_cmd_ds_mac_multicast_adr *mcast_addr = &cmd->params.mc_addr;

        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_mac_multicast_adr) +
                                S_DS_GEN);
        cmd->command = cpu_to_le16(HostCmd_CMD_MAC_MULTICAST_ADR);

        mcast_addr->action = cpu_to_le16(cmd_action);
        mcast_addr->num_of_adrs =
                cpu_to_le16((u16) mcast_list->num_multicast_addr);
        memcpy(mcast_addr->mac_list, mcast_list->mac_list,
               mcast_list->num_multicast_addr * ETH_ALEN);

        return 0;
}

/*
 * This function prepares command to deauthenticate.
 *
 * Preparation includes -
 *      - Setting command ID and proper size
 *      - Setting AP MAC address and reason code
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_802_11_deauthenticate(struct mwifiex_private *priv,
                                             struct host_cmd_ds_command *cmd,
                                             u8 *mac)
{
        struct host_cmd_ds_802_11_deauthenticate *deauth = &cmd->params.deauth;

        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_DEAUTHENTICATE);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_deauthenticate)
                                + S_DS_GEN);

        /* Set AP MAC address */
        memcpy(deauth->mac_addr, mac, ETH_ALEN);

        mwifiex_dbg(priv->adapter, CMD, "cmd: Deauth: %pM\n", deauth->mac_addr);

        deauth->reason_code = cpu_to_le16(WLAN_REASON_DEAUTH_LEAVING);

        return 0;
}

/*
 * This function prepares command to stop Ad-Hoc network.
 *
 * Preparation includes -
 *      - Setting command ID and proper size
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_802_11_ad_hoc_stop(struct host_cmd_ds_command *cmd)
{
        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_AD_HOC_STOP);
        cmd->size = cpu_to_le16(S_DS_GEN);
        return 0;
}

/*
 * This function sets WEP key(s) to key parameter TLV(s).
 *
 * Multi-key parameter TLVs are supported, so we can send multiple
 * WEP keys in a single buffer.
 */
static int
mwifiex_set_keyparamset_wep(struct mwifiex_private *priv,
                            struct mwifiex_ie_type_key_param_set *key_param_set,
                            u16 *key_param_len)
{
        int cur_key_param_len;
        u8 i;

        /* Multi-key_param_set TLV is supported */
        for (i = 0; i < NUM_WEP_KEYS; i++) {
                if ((priv->wep_key[i].key_length == WLAN_KEY_LEN_WEP40) ||
                    (priv->wep_key[i].key_length == WLAN_KEY_LEN_WEP104)) {
                        key_param_set->type =
                                cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
/* Key_param_set WEP fixed length */
#define KEYPARAMSET_WEP_FIXED_LEN 8
                        key_param_set->length = cpu_to_le16((u16)
                                        (priv->wep_key[i].
                                         key_length +
                                         KEYPARAMSET_WEP_FIXED_LEN));
                        key_param_set->key_type_id =
                                cpu_to_le16(KEY_TYPE_ID_WEP);
                        key_param_set->key_info =
                                cpu_to_le16(KEY_ENABLED | KEY_UNICAST |
                                            KEY_MCAST);
                        key_param_set->key_len =
                                cpu_to_le16(priv->wep_key[i].key_length);
                        /* Set WEP key index */
                        key_param_set->key[0] = i;
                        /* Set default Tx key flag */
                        if (i ==
                            (priv->
                             wep_key_curr_index & HostCmd_WEP_KEY_INDEX_MASK))
                                key_param_set->key[1] = 1;
                        else
                                key_param_set->key[1] = 0;
                        memmove(&key_param_set->key[2],
                                priv->wep_key[i].key_material,
                                priv->wep_key[i].key_length);

                        cur_key_param_len = priv->wep_key[i].key_length +
                                KEYPARAMSET_WEP_FIXED_LEN +
                                sizeof(struct mwifiex_ie_types_header);
                        *key_param_len += (u16) cur_key_param_len;
                        key_param_set =
                                (struct mwifiex_ie_type_key_param_set *)
                                                ((u8 *)key_param_set +
                                                 cur_key_param_len);
                } else if (!priv->wep_key[i].key_length) {
                        continue;
                } else {
                        mwifiex_dbg(priv->adapter, ERROR,
                                    "key%d Length = %d is incorrect\n",
                                    (i + 1), priv->wep_key[i].key_length);
                        return -1;
                }
        }

        return 0;
}

/* This function populates key material v2 command
 * to set network key for AES & CMAC AES.
 */
static int mwifiex_set_aes_key_v2(struct mwifiex_private *priv,
                                  struct host_cmd_ds_command *cmd,
                                  struct mwifiex_ds_encrypt_key *enc_key,
                                  struct host_cmd_ds_802_11_key_material_v2 *km)
{
        struct mwifiex_adapter *adapter = priv->adapter;
        u16 size, len = KEY_PARAMS_FIXED_LEN;

        if (enc_key->is_igtk_key) {
                mwifiex_dbg(adapter, INFO,
                            "%s: Set CMAC AES Key\n", __func__);
                if (enc_key->is_rx_seq_valid)
                        memcpy(km->key_param_set.key_params.cmac_aes.ipn,
                               enc_key->pn, enc_key->pn_len);
                km->key_param_set.key_info &= cpu_to_le16(~KEY_MCAST);
                km->key_param_set.key_info |= cpu_to_le16(KEY_IGTK);
                km->key_param_set.key_type = KEY_TYPE_ID_AES_CMAC;
                km->key_param_set.key_params.cmac_aes.key_len =
                                          cpu_to_le16(enc_key->key_len);
                memcpy(km->key_param_set.key_params.cmac_aes.key,
                       enc_key->key_material, enc_key->key_len);
                len += sizeof(struct mwifiex_cmac_aes_param);
        } else if (enc_key->is_igtk_def_key) {
                mwifiex_dbg(adapter, INFO,
                            "%s: Set CMAC default Key index\n", __func__);
                km->key_param_set.key_type = KEY_TYPE_ID_AES_CMAC_DEF;
                km->key_param_set.key_idx = enc_key->key_index & KEY_INDEX_MASK;
        } else {
                mwifiex_dbg(adapter, INFO,
                            "%s: Set AES Key\n", __func__);
                if (enc_key->is_rx_seq_valid)
                        memcpy(km->key_param_set.key_params.aes.pn,
                               enc_key->pn, enc_key->pn_len);
                km->key_param_set.key_type = KEY_TYPE_ID_AES;
                km->key_param_set.key_params.aes.key_len =
                                          cpu_to_le16(enc_key->key_len);
                memcpy(km->key_param_set.key_params.aes.key,
                       enc_key->key_material, enc_key->key_len);
                len += sizeof(struct mwifiex_aes_param);
        }

        km->key_param_set.len = cpu_to_le16(len);
        size = len + sizeof(struct mwifiex_ie_types_header) +
               sizeof(km->action) + S_DS_GEN;
        cmd->size = cpu_to_le16(size);

        return 0;
}

/* This function prepares command to set/get/reset network key(s).
 * This function prepares key material command for V2 format.
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting WEP keys, WAPI keys or WPA keys along with required
 *        encryption (TKIP, AES) (as required)
 *      - Ensuring correct endian-ness
 */
static int
mwifiex_cmd_802_11_key_material_v2(struct mwifiex_private *priv,
                                   struct host_cmd_ds_command *cmd,
                                   u16 cmd_action, u32 cmd_oid,
                                   struct mwifiex_ds_encrypt_key *enc_key)
{
        struct mwifiex_adapter *adapter = priv->adapter;
        u8 *mac = enc_key->mac_addr;
        u16 key_info, len = KEY_PARAMS_FIXED_LEN;
        struct host_cmd_ds_802_11_key_material_v2 *km =
                                                &cmd->params.key_material_v2;

        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_KEY_MATERIAL);
        km->action = cpu_to_le16(cmd_action);

        if (cmd_action == HostCmd_ACT_GEN_GET) {
                mwifiex_dbg(adapter, INFO, "%s: Get key\n", __func__);
                km->key_param_set.key_idx =
                                        enc_key->key_index & KEY_INDEX_MASK;
                km->key_param_set.type = cpu_to_le16(TLV_TYPE_KEY_PARAM_V2);
                km->key_param_set.len = cpu_to_le16(KEY_PARAMS_FIXED_LEN);
                memcpy(km->key_param_set.mac_addr, mac, ETH_ALEN);

                if (enc_key->key_index & MWIFIEX_KEY_INDEX_UNICAST)
                        key_info = KEY_UNICAST;
                else
                        key_info = KEY_MCAST;

                if (enc_key->is_igtk_key)
                        key_info |= KEY_IGTK;

                km->key_param_set.key_info = cpu_to_le16(key_info);

                cmd->size = cpu_to_le16(sizeof(struct mwifiex_ie_types_header) +
                                        S_DS_GEN + KEY_PARAMS_FIXED_LEN +
                                        sizeof(km->action));
                return 0;
        }

        memset(&km->key_param_set, 0,
               sizeof(struct mwifiex_ie_type_key_param_set_v2));

        if (enc_key->key_disable) {
                mwifiex_dbg(adapter, INFO, "%s: Remove key\n", __func__);
                km->action = cpu_to_le16(HostCmd_ACT_GEN_REMOVE);
                km->key_param_set.type = cpu_to_le16(TLV_TYPE_KEY_PARAM_V2);
                km->key_param_set.len = cpu_to_le16(KEY_PARAMS_FIXED_LEN);
                km->key_param_set.key_idx = enc_key->key_index & KEY_INDEX_MASK;
                key_info = KEY_MCAST | KEY_UNICAST;
                km->key_param_set.key_info = cpu_to_le16(key_info);
                memcpy(km->key_param_set.mac_addr, mac, ETH_ALEN);
                cmd->size = cpu_to_le16(sizeof(struct mwifiex_ie_types_header) +
                                        S_DS_GEN + KEY_PARAMS_FIXED_LEN +
                                        sizeof(km->action));
                return 0;
        }

        km->action = cpu_to_le16(HostCmd_ACT_GEN_SET);
        km->key_param_set.key_idx = enc_key->key_index & KEY_INDEX_MASK;
        km->key_param_set.type = cpu_to_le16(TLV_TYPE_KEY_PARAM_V2);
        key_info = KEY_ENABLED;
        memcpy(km->key_param_set.mac_addr, mac, ETH_ALEN);

        if (enc_key->key_len <= WLAN_KEY_LEN_WEP104) {
                mwifiex_dbg(adapter, INFO, "%s: Set WEP Key\n", __func__);
                len += sizeof(struct mwifiex_wep_param);
                km->key_param_set.len = cpu_to_le16(len);
                km->key_param_set.key_type = KEY_TYPE_ID_WEP;

                if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
                                key_info |= KEY_MCAST | KEY_UNICAST;
                } else {
                        if (enc_key->is_current_wep_key) {
                                key_info |= KEY_MCAST | KEY_UNICAST;
                                if (km->key_param_set.key_idx ==
                                    (priv->wep_key_curr_index & KEY_INDEX_MASK))
                                        key_info |= KEY_DEFAULT;
                        } else {
                                if (is_broadcast_ether_addr(mac))
                                        key_info |= KEY_MCAST;
                                else
                                        key_info |= KEY_UNICAST | KEY_DEFAULT;
                        }
                }
                km->key_param_set.key_info = cpu_to_le16(key_info);

                km->key_param_set.key_params.wep.key_len =
                                                  cpu_to_le16(enc_key->key_len);
                memcpy(km->key_param_set.key_params.wep.key,
                       enc_key->key_material, enc_key->key_len);

                cmd->size = cpu_to_le16(sizeof(struct mwifiex_ie_types_header) +
                                        len + sizeof(km->action) + S_DS_GEN);
                return 0;
        }

        if (is_broadcast_ether_addr(mac))
                key_info |= KEY_MCAST | KEY_RX_KEY;
        else
                key_info |= KEY_UNICAST | KEY_TX_KEY | KEY_RX_KEY;

        if (enc_key->is_wapi_key) {
                mwifiex_dbg(adapter, INFO, "%s: Set WAPI Key\n", __func__);
                km->key_param_set.key_type = KEY_TYPE_ID_WAPI;
                memcpy(km->key_param_set.key_params.wapi.pn, enc_key->pn,
                       PN_LEN);
                km->key_param_set.key_params.wapi.key_len =
                                                cpu_to_le16(enc_key->key_len);
                memcpy(km->key_param_set.key_params.wapi.key,
                       enc_key->key_material, enc_key->key_len);
                if (is_broadcast_ether_addr(mac))
                        priv->sec_info.wapi_key_on = true;

                if (!priv->sec_info.wapi_key_on)
                        key_info |= KEY_DEFAULT;
                km->key_param_set.key_info = cpu_to_le16(key_info);

                len += sizeof(struct mwifiex_wapi_param);
                km->key_param_set.len = cpu_to_le16(len);
                cmd->size = cpu_to_le16(sizeof(struct mwifiex_ie_types_header) +
                                        len + sizeof(km->action) + S_DS_GEN);
                return 0;
        }

        if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
                key_info |= KEY_DEFAULT;
                /* Enable unicast bit for WPA-NONE/ADHOC_AES */
                if (!priv->sec_info.wpa2_enabled &&
                    !is_broadcast_ether_addr(mac))
                        key_info |= KEY_UNICAST;
        } else {
                /* Enable default key for WPA/WPA2 */
                if (!priv->wpa_is_gtk_set)
                        key_info |= KEY_DEFAULT;
        }

        km->key_param_set.key_info = cpu_to_le16(key_info);

        if (enc_key->key_len == WLAN_KEY_LEN_CCMP)
                return mwifiex_set_aes_key_v2(priv, cmd, enc_key, km);

        if (enc_key->key_len == WLAN_KEY_LEN_TKIP) {
                mwifiex_dbg(adapter, INFO,
                            "%s: Set TKIP Key\n", __func__);
                if (enc_key->is_rx_seq_valid)
                        memcpy(km->key_param_set.key_params.tkip.pn,
                               enc_key->pn, enc_key->pn_len);
                km->key_param_set.key_type = KEY_TYPE_ID_TKIP;
                km->key_param_set.key_params.tkip.key_len =
                                                cpu_to_le16(enc_key->key_len);
                memcpy(km->key_param_set.key_params.tkip.key,
                       enc_key->key_material, enc_key->key_len);

                len += sizeof(struct mwifiex_tkip_param);
                km->key_param_set.len = cpu_to_le16(len);
                cmd->size = cpu_to_le16(sizeof(struct mwifiex_ie_types_header) +
                                        len + sizeof(km->action) + S_DS_GEN);
        }

        return 0;
}

/*
 * This function prepares command to set/get/reset network key(s).
 * This function prepares key material command for V1 format.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting WEP keys, WAPI keys or WPA keys along with required
 *        encryption (TKIP, AES) (as required)
 *      - Ensuring correct endian-ness
 */
static int
mwifiex_cmd_802_11_key_material_v1(struct mwifiex_private *priv,
                                   struct host_cmd_ds_command *cmd,
                                   u16 cmd_action, u32 cmd_oid,
                                   struct mwifiex_ds_encrypt_key *enc_key)
{
        struct host_cmd_ds_802_11_key_material *key_material =
                &cmd->params.key_material;
        struct host_cmd_tlv_mac_addr *tlv_mac;
        u16 key_param_len = 0, cmd_size;
        int ret = 0;

        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_KEY_MATERIAL);
        key_material->action = cpu_to_le16(cmd_action);

        if (cmd_action == HostCmd_ACT_GEN_GET) {
                cmd->size =
                        cpu_to_le16(sizeof(key_material->action) + S_DS_GEN);
                return ret;
        }

        if (!enc_key) {
                memset(&key_material->key_param_set, 0,
                       (NUM_WEP_KEYS *
                        sizeof(struct mwifiex_ie_type_key_param_set)));
                ret = mwifiex_set_keyparamset_wep(priv,
                                                  &key_material->key_param_set,
                                                  &key_param_len);
                cmd->size = cpu_to_le16(key_param_len +
                                    sizeof(key_material->action) + S_DS_GEN);
                return ret;
        } else
                memset(&key_material->key_param_set, 0,
                       sizeof(struct mwifiex_ie_type_key_param_set));
        if (enc_key->is_wapi_key) {
                mwifiex_dbg(priv->adapter, INFO, "info: Set WAPI Key\n");
                key_material->key_param_set.key_type_id =
                                                cpu_to_le16(KEY_TYPE_ID_WAPI);
                if (cmd_oid == KEY_INFO_ENABLED)
                        key_material->key_param_set.key_info =
                                                cpu_to_le16(KEY_ENABLED);
                else
                        key_material->key_param_set.key_info =
                                                cpu_to_le16(!KEY_ENABLED);

                key_material->key_param_set.key[0] = enc_key->key_index;
                if (!priv->sec_info.wapi_key_on)
                        key_material->key_param_set.key[1] = 1;
                else
                        /* set 0 when re-key */
                        key_material->key_param_set.key[1] = 0;

                if (!is_broadcast_ether_addr(enc_key->mac_addr)) {
                        /* WAPI pairwise key: unicast */
                        key_material->key_param_set.key_info |=
                                cpu_to_le16(KEY_UNICAST);
                } else {        /* WAPI group key: multicast */
                        key_material->key_param_set.key_info |=
                                cpu_to_le16(KEY_MCAST);
                        priv->sec_info.wapi_key_on = true;
                }

                key_material->key_param_set.type =
                                        cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
                key_material->key_param_set.key_len =
                                                cpu_to_le16(WAPI_KEY_LEN);
                memcpy(&key_material->key_param_set.key[2],
                       enc_key->key_material, enc_key->key_len);
                memcpy(&key_material->key_param_set.key[2 + enc_key->key_len],
                       enc_key->pn, PN_LEN);
                key_material->key_param_set.length =
                        cpu_to_le16(WAPI_KEY_LEN + KEYPARAMSET_FIXED_LEN);

                key_param_len = (WAPI_KEY_LEN + KEYPARAMSET_FIXED_LEN) +
                                 sizeof(struct mwifiex_ie_types_header);
                cmd->size = cpu_to_le16(sizeof(key_material->action)
                                        + S_DS_GEN +  key_param_len);
                return ret;
        }
        if (enc_key->key_len == WLAN_KEY_LEN_CCMP) {
                if (enc_key->is_igtk_key) {
                        mwifiex_dbg(priv->adapter, CMD, "cmd: CMAC_AES\n");
                        key_material->key_param_set.key_type_id =
                                        cpu_to_le16(KEY_TYPE_ID_AES_CMAC);
                        if (cmd_oid == KEY_INFO_ENABLED)
                                key_material->key_param_set.key_info =
                                                cpu_to_le16(KEY_ENABLED);
                        else
                                key_material->key_param_set.key_info =
                                                cpu_to_le16(!KEY_ENABLED);

                        key_material->key_param_set.key_info |=
                                                        cpu_to_le16(KEY_IGTK);
                } else {
                        mwifiex_dbg(priv->adapter, CMD, "cmd: WPA_AES\n");
                        key_material->key_param_set.key_type_id =
                                                cpu_to_le16(KEY_TYPE_ID_AES);
                        if (cmd_oid == KEY_INFO_ENABLED)
                                key_material->key_param_set.key_info =
                                                cpu_to_le16(KEY_ENABLED);
                        else
                                key_material->key_param_set.key_info =
                                                cpu_to_le16(!KEY_ENABLED);

                        if (enc_key->key_index & MWIFIEX_KEY_INDEX_UNICAST)
                                /* AES pairwise key: unicast */
                                key_material->key_param_set.key_info |=
                                                cpu_to_le16(KEY_UNICAST);
                        else    /* AES group key: multicast */
                                key_material->key_param_set.key_info |=
                                                        cpu_to_le16(KEY_MCAST);
                }
        } else if (enc_key->key_len == WLAN_KEY_LEN_TKIP) {
                mwifiex_dbg(priv->adapter, CMD, "cmd: WPA_TKIP\n");
                key_material->key_param_set.key_type_id =
                                                cpu_to_le16(KEY_TYPE_ID_TKIP);
                key_material->key_param_set.key_info =
                                                cpu_to_le16(KEY_ENABLED);

                if (enc_key->key_index & MWIFIEX_KEY_INDEX_UNICAST)
                                /* TKIP pairwise key: unicast */
                        key_material->key_param_set.key_info |=
                                                cpu_to_le16(KEY_UNICAST);
                else            /* TKIP group key: multicast */
                        key_material->key_param_set.key_info |=
                                                        cpu_to_le16(KEY_MCAST);
        }

        if (key_material->key_param_set.key_type_id) {
                key_material->key_param_set.type =
                                        cpu_to_le16(TLV_TYPE_KEY_MATERIAL);
                key_material->key_param_set.key_len =
                                        cpu_to_le16((u16) enc_key->key_len);
                memcpy(key_material->key_param_set.key, enc_key->key_material,
                       enc_key->key_len);
                key_material->key_param_set.length =
                        cpu_to_le16((u16) enc_key->key_len +
                                    KEYPARAMSET_FIXED_LEN);

                key_param_len = (u16)(enc_key->key_len + KEYPARAMSET_FIXED_LEN)
                                + sizeof(struct mwifiex_ie_types_header);

                if (le16_to_cpu(key_material->key_param_set.key_type_id) ==
                                                        KEY_TYPE_ID_AES_CMAC) {
                        struct mwifiex_cmac_param *param =
                                        (void *)key_material->key_param_set.key;

                        memcpy(param->ipn, enc_key->pn, IGTK_PN_LEN);
                        memcpy(param->key, enc_key->key_material,
                               WLAN_KEY_LEN_AES_CMAC);

                        key_param_len = sizeof(struct mwifiex_cmac_param);
                        key_material->key_param_set.key_len =
                                                cpu_to_le16(key_param_len);
                        key_param_len += KEYPARAMSET_FIXED_LEN;
                        key_material->key_param_set.length =
                                                cpu_to_le16(key_param_len);
                        key_param_len += sizeof(struct mwifiex_ie_types_header);
                }

                cmd->size = cpu_to_le16(sizeof(key_material->action) + S_DS_GEN
                                        + key_param_len);

                if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) {
                        tlv_mac = (void *)((u8 *)&key_material->key_param_set +
                                           key_param_len);
                        tlv_mac->header.type =
                                        cpu_to_le16(TLV_TYPE_STA_MAC_ADDR);
                        tlv_mac->header.len = cpu_to_le16(ETH_ALEN);
                        memcpy(tlv_mac->mac_addr, enc_key->mac_addr, ETH_ALEN);
                        cmd_size = key_param_len + S_DS_GEN +
                                   sizeof(key_material->action) +
                                   sizeof(struct host_cmd_tlv_mac_addr);
                } else {
                        cmd_size = key_param_len + S_DS_GEN +
                                   sizeof(key_material->action);
                }
                cmd->size = cpu_to_le16(cmd_size);
        }

        return ret;
}

/* Wrapper function for setting network key depending upon FW KEY API version */
static int
mwifiex_cmd_802_11_key_material(struct mwifiex_private *priv,
                                struct host_cmd_ds_command *cmd,
                                u16 cmd_action, u32 cmd_oid,
                                struct mwifiex_ds_encrypt_key *enc_key)
{
        if (priv->adapter->key_api_major_ver == KEY_API_VER_MAJOR_V2)
                return mwifiex_cmd_802_11_key_material_v2(priv, cmd,
                                                          cmd_action, cmd_oid,
                                                          enc_key);

        else
                return mwifiex_cmd_802_11_key_material_v1(priv, cmd,
                                                          cmd_action, cmd_oid,
                                                          enc_key);
}

/*
 * This function prepares command to set/get 11d domain information.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting domain information fields (for SET only)
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_802_11d_domain_info(struct mwifiex_private *priv,
                                           struct host_cmd_ds_command *cmd,
                                           u16 cmd_action)
{
        struct mwifiex_adapter *adapter = priv->adapter;
        struct host_cmd_ds_802_11d_domain_info *domain_info =
                &cmd->params.domain_info;
        struct mwifiex_ietypes_domain_param_set *domain =
                &domain_info->domain;
        u8 no_of_triplet = adapter->domain_reg.no_of_triplet;

        mwifiex_dbg(adapter, INFO,
                    "info: 11D: no_of_triplet=0x%x\n", no_of_triplet);

        cmd->command = cpu_to_le16(HostCmd_CMD_802_11D_DOMAIN_INFO);
        domain_info->action = cpu_to_le16(cmd_action);
        if (cmd_action == HostCmd_ACT_GEN_GET) {
                cmd->size = cpu_to_le16(sizeof(domain_info->action) + S_DS_GEN);
                return 0;
        }

        /* Set domain info fields */
        domain->header.type = cpu_to_le16(WLAN_EID_COUNTRY);
        memcpy(domain->country_code, adapter->domain_reg.country_code,
               sizeof(domain->country_code));

        domain->header.len =
                cpu_to_le16((no_of_triplet *
                             sizeof(struct ieee80211_country_ie_triplet))
                            + sizeof(domain->country_code));

        if (no_of_triplet) {
                memcpy(domain->triplet, adapter->domain_reg.triplet,
                       no_of_triplet * sizeof(struct
                                              ieee80211_country_ie_triplet));

                cmd->size = cpu_to_le16(sizeof(domain_info->action) +
                                        le16_to_cpu(domain->header.len) +
                                        sizeof(struct mwifiex_ie_types_header)
                                        + S_DS_GEN);
        } else {
                cmd->size = cpu_to_le16(sizeof(domain_info->action) + S_DS_GEN);
        }

        return 0;
}

/*
 * This function prepares command to set/get IBSS coalescing status.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting status to enable or disable (for SET only)
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_ibss_coalescing_status(struct host_cmd_ds_command *cmd,
                                              u16 cmd_action, u16 *enable)
{
        struct host_cmd_ds_802_11_ibss_status *ibss_coal =
                &(cmd->params.ibss_coalescing);

        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_IBSS_COALESCING_STATUS);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_ibss_status) +
                                S_DS_GEN);
        cmd->result = 0;
        ibss_coal->action = cpu_to_le16(cmd_action);

        switch (cmd_action) {
        case HostCmd_ACT_GEN_SET:
                if (enable)
                        ibss_coal->enable = cpu_to_le16(*enable);
                else
                        ibss_coal->enable = 0;
                break;

                /* In other case.. Nothing to do */
        case HostCmd_ACT_GEN_GET:
        default:
                break;
        }

        return 0;
}

/* This function prepares command buffer to get/set memory location value.
 */
static int
mwifiex_cmd_mem_access(struct host_cmd_ds_command *cmd, u16 cmd_action,
                       void *pdata_buf)
{
        struct mwifiex_ds_mem_rw *mem_rw = (void *)pdata_buf;
        struct host_cmd_ds_mem_access *mem_access = (void *)&cmd->params.mem;

        cmd->command = cpu_to_le16(HostCmd_CMD_MEM_ACCESS);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_mem_access) +
                                S_DS_GEN);

        mem_access->action = cpu_to_le16(cmd_action);
        mem_access->addr = cpu_to_le32(mem_rw->addr);
        mem_access->value = cpu_to_le32(mem_rw->value);

        return 0;
}

/*
 * This function prepares command to set/get register value.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting register offset (for both GET and SET) and
 *        register value (for SET only)
 *      - Ensuring correct endian-ness
 *
 * The following type of registers can be accessed with this function -
 *      - MAC register
 *      - BBP register
 *      - RF register
 *      - PMIC register
 *      - CAU register
 *      - EEPROM
 */
static int mwifiex_cmd_reg_access(struct host_cmd_ds_command *cmd,
                                  u16 cmd_action, void *data_buf)
{
        struct mwifiex_ds_reg_rw *reg_rw = data_buf;

        switch (le16_to_cpu(cmd->command)) {
        case HostCmd_CMD_MAC_REG_ACCESS:
        {
                struct host_cmd_ds_mac_reg_access *mac_reg;

                cmd->size = cpu_to_le16(sizeof(*mac_reg) + S_DS_GEN);
                mac_reg = &cmd->params.mac_reg;
                mac_reg->action = cpu_to_le16(cmd_action);
                mac_reg->offset = cpu_to_le16((u16) reg_rw->offset);
                mac_reg->value = cpu_to_le32(reg_rw->value);
                break;
        }
        case HostCmd_CMD_BBP_REG_ACCESS:
        {
                struct host_cmd_ds_bbp_reg_access *bbp_reg;

                cmd->size = cpu_to_le16(sizeof(*bbp_reg) + S_DS_GEN);
                bbp_reg = &cmd->params.bbp_reg;
                bbp_reg->action = cpu_to_le16(cmd_action);
                bbp_reg->offset = cpu_to_le16((u16) reg_rw->offset);
                bbp_reg->value = (u8) reg_rw->value;
                break;
        }
        case HostCmd_CMD_RF_REG_ACCESS:
        {
                struct host_cmd_ds_rf_reg_access *rf_reg;

                cmd->size = cpu_to_le16(sizeof(*rf_reg) + S_DS_GEN);
                rf_reg = &cmd->params.rf_reg;
                rf_reg->action = cpu_to_le16(cmd_action);
                rf_reg->offset = cpu_to_le16((u16) reg_rw->offset);
                rf_reg->value = (u8) reg_rw->value;
                break;
        }
        case HostCmd_CMD_PMIC_REG_ACCESS:
        {
                struct host_cmd_ds_pmic_reg_access *pmic_reg;

                cmd->size = cpu_to_le16(sizeof(*pmic_reg) + S_DS_GEN);
                pmic_reg = &cmd->params.pmic_reg;
                pmic_reg->action = cpu_to_le16(cmd_action);
                pmic_reg->offset = cpu_to_le16((u16) reg_rw->offset);
                pmic_reg->value = (u8) reg_rw->value;
                break;
        }
        case HostCmd_CMD_CAU_REG_ACCESS:
        {
                struct host_cmd_ds_rf_reg_access *cau_reg;

                cmd->size = cpu_to_le16(sizeof(*cau_reg) + S_DS_GEN);
                cau_reg = &cmd->params.rf_reg;
                cau_reg->action = cpu_to_le16(cmd_action);
                cau_reg->offset = cpu_to_le16((u16) reg_rw->offset);
                cau_reg->value = (u8) reg_rw->value;
                break;
        }
        case HostCmd_CMD_802_11_EEPROM_ACCESS:
        {
                struct mwifiex_ds_read_eeprom *rd_eeprom = data_buf;
                struct host_cmd_ds_802_11_eeprom_access *cmd_eeprom =
                        &cmd->params.eeprom;

                cmd->size = cpu_to_le16(sizeof(*cmd_eeprom) + S_DS_GEN);
                cmd_eeprom->action = cpu_to_le16(cmd_action);
                cmd_eeprom->offset = cpu_to_le16(rd_eeprom->offset);
                cmd_eeprom->byte_count = cpu_to_le16(rd_eeprom->byte_count);
                cmd_eeprom->value = 0;
                break;
        }
        default:
                return -1;
        }

        return 0;
}

/*
 * This function prepares command to set PCI-Express
 * host buffer configuration
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Setting host buffer configuration
 *      - Ensuring correct endian-ness
 */
static int
mwifiex_cmd_pcie_host_spec(struct mwifiex_private *priv,
                           struct host_cmd_ds_command *cmd, u16 action)
{
        struct host_cmd_ds_pcie_details *host_spec =
                                        &cmd->params.pcie_host_spec;
        struct pcie_service_card *card = priv->adapter->card;

        cmd->command = cpu_to_le16(HostCmd_CMD_PCIE_DESC_DETAILS);
        cmd->size = cpu_to_le16(sizeof(struct
                                        host_cmd_ds_pcie_details) + S_DS_GEN);
        cmd->result = 0;

        memset(host_spec, 0, sizeof(struct host_cmd_ds_pcie_details));

        if (action != HostCmd_ACT_GEN_SET)
                return 0;

        /* Send the ring base addresses and count to firmware */
        host_spec->txbd_addr_lo = cpu_to_le32((u32)(card->txbd_ring_pbase));
        host_spec->txbd_addr_hi =
                        cpu_to_le32((u32)(((u64)card->txbd_ring_pbase) >> 32));
        host_spec->txbd_count = cpu_to_le32(MWIFIEX_MAX_TXRX_BD);
        host_spec->rxbd_addr_lo = cpu_to_le32((u32)(card->rxbd_ring_pbase));
        host_spec->rxbd_addr_hi =
                        cpu_to_le32((u32)(((u64)card->rxbd_ring_pbase) >> 32));
        host_spec->rxbd_count = cpu_to_le32(MWIFIEX_MAX_TXRX_BD);
        host_spec->evtbd_addr_lo = cpu_to_le32((u32)(card->evtbd_ring_pbase));
        host_spec->evtbd_addr_hi =
                        cpu_to_le32((u32)(((u64)card->evtbd_ring_pbase) >> 32));
        host_spec->evtbd_count = cpu_to_le32(MWIFIEX_MAX_EVT_BD);
        if (card->sleep_cookie_vbase) {
                host_spec->sleep_cookie_addr_lo =
                                cpu_to_le32((u32)(card->sleep_cookie_pbase));
                host_spec->sleep_cookie_addr_hi = cpu_to_le32((u32)(((u64)
                                        (card->sleep_cookie_pbase)) >> 32));
                mwifiex_dbg(priv->adapter, INFO,
                            "sleep_cook_lo phy addr: 0x%x\n",
                            host_spec->sleep_cookie_addr_lo);
        }

        return 0;
}

/*
 * This function prepares command for event subscription, configuration
 * and query. Events can be subscribed or unsubscribed. Current subscribed
 * events can be queried. Also, current subscribed events are reported in
 * every FW response.
 */
static int
mwifiex_cmd_802_11_subsc_evt(struct mwifiex_private *priv,
                             struct host_cmd_ds_command *cmd,
                             struct mwifiex_ds_misc_subsc_evt *subsc_evt_cfg)
{
        struct host_cmd_ds_802_11_subsc_evt *subsc_evt = &cmd->params.subsc_evt;
        struct mwifiex_ie_types_rssi_threshold *rssi_tlv;
        u16 event_bitmap;
        u8 *pos;

        cmd->command = cpu_to_le16(HostCmd_CMD_802_11_SUBSCRIBE_EVENT);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_802_11_subsc_evt) +
                                S_DS_GEN);

        subsc_evt->action = cpu_to_le16(subsc_evt_cfg->action);
        mwifiex_dbg(priv->adapter, CMD,
                    "cmd: action: %d\n", subsc_evt_cfg->action);

        /*For query requests, no configuration TLV structures are to be added.*/
        if (subsc_evt_cfg->action == HostCmd_ACT_GEN_GET)
                return 0;

        subsc_evt->events = cpu_to_le16(subsc_evt_cfg->events);

        event_bitmap = subsc_evt_cfg->events;
        mwifiex_dbg(priv->adapter, CMD, "cmd: event bitmap : %16x\n",
                    event_bitmap);

        if (((subsc_evt_cfg->action == HostCmd_ACT_BITWISE_CLR) ||
             (subsc_evt_cfg->action == HostCmd_ACT_BITWISE_SET)) &&
            (event_bitmap == 0)) {
                mwifiex_dbg(priv->adapter, ERROR,
                            "Error: No event specified\t"
                            "for bitwise action type\n");
                return -EINVAL;
        }

        /*
         * Append TLV structures for each of the specified events for
         * subscribing or re-configuring. This is not required for
         * bitwise unsubscribing request.
         */
        if (subsc_evt_cfg->action == HostCmd_ACT_BITWISE_CLR)
                return 0;

        pos = ((u8 *)subsc_evt) +
                        sizeof(struct host_cmd_ds_802_11_subsc_evt);

        if (event_bitmap & BITMASK_BCN_RSSI_LOW) {
                rssi_tlv = (struct mwifiex_ie_types_rssi_threshold *) pos;

                rssi_tlv->header.type = cpu_to_le16(TLV_TYPE_RSSI_LOW);
                rssi_tlv->header.len =
                    cpu_to_le16(sizeof(struct mwifiex_ie_types_rssi_threshold) -
                                sizeof(struct mwifiex_ie_types_header));
                rssi_tlv->abs_value = subsc_evt_cfg->bcn_l_rssi_cfg.abs_value;
                rssi_tlv->evt_freq = subsc_evt_cfg->bcn_l_rssi_cfg.evt_freq;

                mwifiex_dbg(priv->adapter, EVENT,
                            "Cfg Beacon Low Rssi event,\t"
                            "RSSI:-%d dBm, Freq:%d\n",
                            subsc_evt_cfg->bcn_l_rssi_cfg.abs_value,
                            subsc_evt_cfg->bcn_l_rssi_cfg.evt_freq);

                pos += sizeof(struct mwifiex_ie_types_rssi_threshold);
                le16_unaligned_add_cpu(&cmd->size,
                                       sizeof(
                                       struct mwifiex_ie_types_rssi_threshold));
        }

        if (event_bitmap & BITMASK_BCN_RSSI_HIGH) {
                rssi_tlv = (struct mwifiex_ie_types_rssi_threshold *) pos;

                rssi_tlv->header.type = cpu_to_le16(TLV_TYPE_RSSI_HIGH);
                rssi_tlv->header.len =
                    cpu_to_le16(sizeof(struct mwifiex_ie_types_rssi_threshold) -
                                sizeof(struct mwifiex_ie_types_header));
                rssi_tlv->abs_value = subsc_evt_cfg->bcn_h_rssi_cfg.abs_value;
                rssi_tlv->evt_freq = subsc_evt_cfg->bcn_h_rssi_cfg.evt_freq;

                mwifiex_dbg(priv->adapter, EVENT,
                            "Cfg Beacon High Rssi event,\t"
                            "RSSI:-%d dBm, Freq:%d\n",
                            subsc_evt_cfg->bcn_h_rssi_cfg.abs_value,
                            subsc_evt_cfg->bcn_h_rssi_cfg.evt_freq);

                pos += sizeof(struct mwifiex_ie_types_rssi_threshold);
                le16_unaligned_add_cpu(&cmd->size,
                                       sizeof(
                                       struct mwifiex_ie_types_rssi_threshold));
        }

        return 0;
}

static int
mwifiex_cmd_append_rpn_expression(struct mwifiex_private *priv,
                                  struct mwifiex_mef_entry *mef_entry,
                                  u8 **buffer)
{
        struct mwifiex_mef_filter *filter = mef_entry->filter;
        int i, byte_len;
        u8 *stack_ptr = *buffer;

        for (i = 0; i < MWIFIEX_MEF_MAX_FILTERS; i++) {
                filter = &mef_entry->filter[i];
                if (!filter->filt_type)
                        break;
                put_unaligned_le32((u32)filter->repeat, stack_ptr);
                stack_ptr += 4;
                *stack_ptr = TYPE_DNUM;
                stack_ptr += 1;

                byte_len = filter->byte_seq[MWIFIEX_MEF_MAX_BYTESEQ];
                memcpy(stack_ptr, filter->byte_seq, byte_len);
                stack_ptr += byte_len;
                *stack_ptr = byte_len;
                stack_ptr += 1;
                *stack_ptr = TYPE_BYTESEQ;
                stack_ptr += 1;
                put_unaligned_le32((u32)filter->offset, stack_ptr);
                stack_ptr += 4;
                *stack_ptr = TYPE_DNUM;
                stack_ptr += 1;

                *stack_ptr = filter->filt_type;
                stack_ptr += 1;

                if (filter->filt_action) {
                        *stack_ptr = filter->filt_action;
                        stack_ptr += 1;
                }

                if (stack_ptr - *buffer > STACK_NBYTES)
                        return -1;
        }

        *buffer = stack_ptr;
        return 0;
}

static int
mwifiex_cmd_mef_cfg(struct mwifiex_private *priv,
                    struct host_cmd_ds_command *cmd,
                    struct mwifiex_ds_mef_cfg *mef)
{
        struct host_cmd_ds_mef_cfg *mef_cfg = &cmd->params.mef_cfg;
        struct mwifiex_fw_mef_entry *mef_entry = NULL;
        u8 *pos = (u8 *)mef_cfg;
        u16 i;

        cmd->command = cpu_to_le16(HostCmd_CMD_MEF_CFG);

        mef_cfg->criteria = cpu_to_le32(mef->criteria);
        mef_cfg->num_entries = cpu_to_le16(mef->num_entries);
        pos += sizeof(*mef_cfg);

        for (i = 0; i < mef->num_entries; i++) {
                mef_entry = (struct mwifiex_fw_mef_entry *)pos;
                mef_entry->mode = mef->mef_entry[i].mode;
                mef_entry->action = mef->mef_entry[i].action;
                pos += sizeof(*mef_cfg->mef_entry);

                if (mwifiex_cmd_append_rpn_expression(priv,
                                                      &mef->mef_entry[i], &pos))
                        return -1;

                mef_entry->exprsize =
                        cpu_to_le16(pos - mef_entry->expr);
        }
        cmd->size = cpu_to_le16((u16) (pos - (u8 *)mef_cfg) + S_DS_GEN);

        return 0;
}

/* This function parse cal data from ASCII to hex */
static u32 mwifiex_parse_cal_cfg(u8 *src, size_t len, u8 *dst)
{
        u8 *s = src, *d = dst;

        while (s - src < len) {
                if (*s && (isspace(*s) || *s == '\t')) {
                        s++;
                        continue;
                }
                if (isxdigit(*s)) {
                        *d++ = simple_strtol(s, NULL, 16);
                        s += 2;
                } else {
                        s++;
                }
        }

        return d - dst;
}

int mwifiex_dnld_dt_cfgdata(struct mwifiex_private *priv,
                            struct device_node *node, const char *prefix)
{
#ifdef CONFIG_OF
        struct property *prop;
        size_t len = strlen(prefix);
        int ret;

        /* look for all matching property names */
        for_each_property_of_node(node, prop) {
                if (len > strlen(prop->name) ||
                    strncmp(prop->name, prefix, len))
                        continue;

                /* property header is 6 bytes, data must fit in cmd buffer */
                if (prop->value && prop->length > 6 &&
                    prop->length <= MWIFIEX_SIZE_OF_CMD_BUFFER - S_DS_GEN) {
                        ret = mwifiex_send_cmd(priv, HostCmd_CMD_CFG_DATA,
                                               HostCmd_ACT_GEN_SET, 0,
                                               prop, true);
                        if (ret)
                                return ret;
                }
        }
#endif
        return 0;
}

/* This function prepares command of set_cfg_data. */
static int mwifiex_cmd_cfg_data(struct mwifiex_private *priv,
                                struct host_cmd_ds_command *cmd, void *data_buf)
{
        struct mwifiex_adapter *adapter = priv->adapter;
        struct property *prop = data_buf;
        u32 len;
        u8 *data = (u8 *)cmd + S_DS_GEN;
        int ret;

        if (prop) {
                len = prop->length;
                ret = of_property_read_u8_array(adapter->dt_node, prop->name,
                                                data, len);
                if (ret)
                        return ret;
                mwifiex_dbg(adapter, INFO,
                            "download cfg_data from device tree: %s\n",
                            prop->name);
        } else if (adapter->cal_data->data && adapter->cal_data->size > 0) {
                len = mwifiex_parse_cal_cfg((u8 *)adapter->cal_data->data,
                                            adapter->cal_data->size, data);
                mwifiex_dbg(adapter, INFO,
                            "download cfg_data from config file\n");
        } else {
                return -1;
        }

        cmd->command = cpu_to_le16(HostCmd_CMD_CFG_DATA);
        cmd->size = cpu_to_le16(S_DS_GEN + len);

        return 0;
}

static int
mwifiex_cmd_set_mc_policy(struct mwifiex_private *priv,
                          struct host_cmd_ds_command *cmd,
                          u16 cmd_action, void *data_buf)
{
        struct host_cmd_ds_multi_chan_policy *mc_pol = &cmd->params.mc_policy;
        const u16 *drcs_info = data_buf;

        mc_pol->action = cpu_to_le16(cmd_action);
        mc_pol->policy = cpu_to_le16(*drcs_info);
        cmd->command = cpu_to_le16(HostCmd_CMD_MC_POLICY);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_multi_chan_policy) +
                                S_DS_GEN);
        return 0;
}

static int mwifiex_cmd_robust_coex(struct mwifiex_private *priv,
                                   struct host_cmd_ds_command *cmd,
                                   u16 cmd_action, bool *is_timeshare)
{
        struct host_cmd_ds_robust_coex *coex = &cmd->params.coex;
        struct mwifiex_ie_types_robust_coex *coex_tlv;

        cmd->command = cpu_to_le16(HostCmd_CMD_ROBUST_COEX);
        cmd->size = cpu_to_le16(sizeof(*coex) + sizeof(*coex_tlv) + S_DS_GEN);

        coex->action = cpu_to_le16(cmd_action);
        coex_tlv = (struct mwifiex_ie_types_robust_coex *)
                                ((u8 *)coex + sizeof(*coex));
        coex_tlv->header.type = cpu_to_le16(TLV_TYPE_ROBUST_COEX);
        coex_tlv->header.len = cpu_to_le16(sizeof(coex_tlv->mode));

        if (coex->action == HostCmd_ACT_GEN_GET)
                return 0;

        if (*is_timeshare)
                coex_tlv->mode = cpu_to_le32(MWIFIEX_COEX_MODE_TIMESHARE);
        else
                coex_tlv->mode = cpu_to_le32(MWIFIEX_COEX_MODE_SPATIAL);

        return 0;
}

static int mwifiex_cmd_gtk_rekey_offload(struct mwifiex_private *priv,
                                         struct host_cmd_ds_command *cmd,
                                         u16 cmd_action,
                                         struct cfg80211_gtk_rekey_data *data)
{
        struct host_cmd_ds_gtk_rekey_params *rekey = &cmd->params.rekey;
        u64 rekey_ctr;

        cmd->command = cpu_to_le16(HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG);
        cmd->size = cpu_to_le16(sizeof(*rekey) + S_DS_GEN);

        rekey->action = cpu_to_le16(cmd_action);
        if (cmd_action == HostCmd_ACT_GEN_SET) {
                memcpy(rekey->kek, data->kek, NL80211_KEK_LEN);
                memcpy(rekey->kck, data->kck, NL80211_KCK_LEN);
                rekey_ctr = be64_to_cpup((__be64 *)data->replay_ctr);
                rekey->replay_ctr_low = cpu_to_le32((u32)rekey_ctr);
                rekey->replay_ctr_high =
                        cpu_to_le32((u32)((u64)rekey_ctr >> 32));
        }

        return 0;
}

static int mwifiex_cmd_chan_region_cfg(struct mwifiex_private *priv,
                                       struct host_cmd_ds_command *cmd,
                                       u16 cmd_action)
{
        struct host_cmd_ds_chan_region_cfg *reg = &cmd->params.reg_cfg;

        cmd->command = cpu_to_le16(HostCmd_CMD_CHAN_REGION_CFG);
        cmd->size = cpu_to_le16(sizeof(*reg) + S_DS_GEN);

        if (cmd_action == HostCmd_ACT_GEN_GET)
                reg->action = cpu_to_le16(cmd_action);

        return 0;
}

static int
mwifiex_cmd_coalesce_cfg(struct mwifiex_private *priv,
                         struct host_cmd_ds_command *cmd,
                         u16 cmd_action, void *data_buf)
{
        struct host_cmd_ds_coalesce_cfg *coalesce_cfg =
                                                &cmd->params.coalesce_cfg;
        struct mwifiex_ds_coalesce_cfg *cfg = data_buf;
        struct coalesce_filt_field_param *param;
        u16 cnt, idx, length;
        struct coalesce_receive_filt_rule *rule;

        cmd->command = cpu_to_le16(HostCmd_CMD_COALESCE_CFG);
        cmd->size = cpu_to_le16(S_DS_GEN);

        coalesce_cfg->action = cpu_to_le16(cmd_action);
        coalesce_cfg->num_of_rules = cpu_to_le16(cfg->num_of_rules);
        rule = coalesce_cfg->rule;

        for (cnt = 0; cnt < cfg->num_of_rules; cnt++) {
                rule->header.type = cpu_to_le16(TLV_TYPE_COALESCE_RULE);
                rule->max_coalescing_delay =
                        cpu_to_le16(cfg->rule[cnt].max_coalescing_delay);
                rule->pkt_type = cfg->rule[cnt].pkt_type;
                rule->num_of_fields = cfg->rule[cnt].num_of_fields;

                length = 0;

                param = rule->params;
                for (idx = 0; idx < cfg->rule[cnt].num_of_fields; idx++) {
                        param->operation = cfg->rule[cnt].params[idx].operation;
                        param->operand_len =
                                        cfg->rule[cnt].params[idx].operand_len;
                        param->offset =
                                cpu_to_le16(cfg->rule[cnt].params[idx].offset);
                        memcpy(param->operand_byte_stream,
                               cfg->rule[cnt].params[idx].operand_byte_stream,
                               param->operand_len);

                        length += sizeof(struct coalesce_filt_field_param);

                        param++;
                }

                /* Total rule length is sizeof max_coalescing_delay(u16),
                 * num_of_fields(u8), pkt_type(u8) and total length of the all
                 * params
                 */
                rule->header.len = cpu_to_le16(length + sizeof(u16) +
                                               sizeof(u8) + sizeof(u8));

                /* Add the rule length to the command size*/
                le16_unaligned_add_cpu(&cmd->size,
                                       le16_to_cpu(rule->header.len) +
                                       sizeof(struct mwifiex_ie_types_header));

                rule = (void *)((u8 *)rule->params + length);
        }

        /* Add sizeof action, num_of_rules to total command length */
        le16_unaligned_add_cpu(&cmd->size, sizeof(u16) + sizeof(u16));

        return 0;
}

static int
mwifiex_cmd_tdls_config(struct mwifiex_private *priv,
                        struct host_cmd_ds_command *cmd,
                        u16 cmd_action, void *data_buf)
{
        struct host_cmd_ds_tdls_config *tdls_config = &cmd->params.tdls_config;
        struct mwifiex_tdls_init_cs_params *config;
        struct mwifiex_tdls_config *init_config;
        u16 len;

        cmd->command = cpu_to_le16(HostCmd_CMD_TDLS_CONFIG);
        cmd->size = cpu_to_le16(S_DS_GEN);
        tdls_config->tdls_action = cpu_to_le16(cmd_action);
        le16_unaligned_add_cpu(&cmd->size, sizeof(tdls_config->tdls_action));

        switch (cmd_action) {
        case ACT_TDLS_CS_ENABLE_CONFIG:
                init_config = data_buf;
                len = sizeof(*init_config);
                memcpy(tdls_config->tdls_data, init_config, len);
                break;
        case ACT_TDLS_CS_INIT:
                config = data_buf;
                len = sizeof(*config);
                memcpy(tdls_config->tdls_data, config, len);
                break;
        case ACT_TDLS_CS_STOP:
                len = sizeof(struct mwifiex_tdls_stop_cs_params);
                memcpy(tdls_config->tdls_data, data_buf, len);
                break;
        case ACT_TDLS_CS_PARAMS:
                len = sizeof(struct mwifiex_tdls_config_cs_params);
                memcpy(tdls_config->tdls_data, data_buf, len);
                break;
        default:
                mwifiex_dbg(priv->adapter, ERROR,
                            "Unknown TDLS configuration\n");
                return -ENOTSUPP;
        }

        le16_unaligned_add_cpu(&cmd->size, len);
        return 0;
}

static int
mwifiex_cmd_tdls_oper(struct mwifiex_private *priv,
                      struct host_cmd_ds_command *cmd,
                      void *data_buf)
{
        struct host_cmd_ds_tdls_oper *tdls_oper = &cmd->params.tdls_oper;
        struct mwifiex_ds_tdls_oper *oper = data_buf;
        struct host_cmd_tlv_rates *tlv_rates;
        struct mwifiex_ie_types_htcap *ht_capab;
        struct mwifiex_ie_types_qos_info *wmm_qos_info;
        struct mwifiex_ie_types_extcap *extcap;
        struct mwifiex_ie_types_vhtcap *vht_capab;
        struct mwifiex_ie_types_aid *aid;
        struct mwifiex_ie_types_tdls_idle_timeout *timeout;
        u8 *pos;
        u16 config_len = 0;
        struct station_parameters *params = priv->sta_params;

        cmd->command = cpu_to_le16(HostCmd_CMD_TDLS_OPER);
        cmd->size = cpu_to_le16(S_DS_GEN);
        le16_unaligned_add_cpu(&cmd->size,
                               sizeof(struct host_cmd_ds_tdls_oper));

        tdls_oper->reason = 0;
        memcpy(tdls_oper->peer_mac, oper->peer_mac, ETH_ALEN);

        pos = (u8 *)tdls_oper + sizeof(struct host_cmd_ds_tdls_oper);

        switch (oper->tdls_action) {
        case MWIFIEX_TDLS_DISABLE_LINK:
                tdls_oper->tdls_action = cpu_to_le16(ACT_TDLS_DELETE);
                break;
        case MWIFIEX_TDLS_CREATE_LINK:
                tdls_oper->tdls_action = cpu_to_le16(ACT_TDLS_CREATE);
                break;
        case MWIFIEX_TDLS_CONFIG_LINK:
                tdls_oper->tdls_action = cpu_to_le16(ACT_TDLS_CONFIG);

                if (!params) {
                        mwifiex_dbg(priv->adapter, ERROR,
                                    "TDLS config params not available for %pM\n",
                                    oper->peer_mac);
                        return -ENODATA;
                }

                put_unaligned_le16(params->capability, pos);
                config_len += sizeof(params->capability);

                wmm_qos_info = (void *)(pos + config_len);
                wmm_qos_info->header.type = cpu_to_le16(WLAN_EID_QOS_CAPA);
                wmm_qos_info->header.len =
                                cpu_to_le16(sizeof(wmm_qos_info->qos_info));
                wmm_qos_info->qos_info = 0;
                config_len += sizeof(struct mwifiex_ie_types_qos_info);

                if (params->ht_capa) {
                        ht_capab = (struct mwifiex_ie_types_htcap *)(pos +
                                                                    config_len);
                        ht_capab->header.type =
                                            cpu_to_le16(WLAN_EID_HT_CAPABILITY);
                        ht_capab->header.len =
                                   cpu_to_le16(sizeof(struct ieee80211_ht_cap));
                        memcpy(&ht_capab->ht_cap, params->ht_capa,
                               sizeof(struct ieee80211_ht_cap));
                        config_len += sizeof(struct mwifiex_ie_types_htcap);
                }

                if (params->supported_rates && params->supported_rates_len) {
                        tlv_rates = (struct host_cmd_tlv_rates *)(pos +
                                                                  config_len);
                        tlv_rates->header.type =
                                               cpu_to_le16(WLAN_EID_SUPP_RATES);
                        tlv_rates->header.len =
                                       cpu_to_le16(params->supported_rates_len);
                        memcpy(tlv_rates->rates, params->supported_rates,
                               params->supported_rates_len);
                        config_len += sizeof(struct host_cmd_tlv_rates) +
                                      params->supported_rates_len;
                }

                if (params->ext_capab && params->ext_capab_len) {
                        extcap = (struct mwifiex_ie_types_extcap *)(pos +
                                                                    config_len);
                        extcap->header.type =
                                           cpu_to_le16(WLAN_EID_EXT_CAPABILITY);
                        extcap->header.len = cpu_to_le16(params->ext_capab_len);
                        memcpy(extcap->ext_capab, params->ext_capab,
                               params->ext_capab_len);
                        config_len += sizeof(struct mwifiex_ie_types_extcap) +
                                      params->ext_capab_len;
                }
                if (params->vht_capa) {
                        vht_capab = (struct mwifiex_ie_types_vhtcap *)(pos +
                                                                    config_len);
                        vht_capab->header.type =
                                           cpu_to_le16(WLAN_EID_VHT_CAPABILITY);
                        vht_capab->header.len =
                                  cpu_to_le16(sizeof(struct ieee80211_vht_cap));
                        memcpy(&vht_capab->vht_cap, params->vht_capa,
                               sizeof(struct ieee80211_vht_cap));
                        config_len += sizeof(struct mwifiex_ie_types_vhtcap);
                }
                if (params->aid) {
                        aid = (struct mwifiex_ie_types_aid *)(pos + config_len);
                        aid->header.type = cpu_to_le16(WLAN_EID_AID);
                        aid->header.len = cpu_to_le16(sizeof(params->aid));
                        aid->aid = cpu_to_le16(params->aid);
                        config_len += sizeof(struct mwifiex_ie_types_aid);
                }

                timeout = (void *)(pos + config_len);
                timeout->header.type = cpu_to_le16(TLV_TYPE_TDLS_IDLE_TIMEOUT);
                timeout->header.len = cpu_to_le16(sizeof(timeout->value));
                timeout->value = cpu_to_le16(MWIFIEX_TDLS_IDLE_TIMEOUT_IN_SEC);
                config_len += sizeof(struct mwifiex_ie_types_tdls_idle_timeout);

                break;
        default:
                mwifiex_dbg(priv->adapter, ERROR, "Unknown TDLS operation\n");
                return -ENOTSUPP;
        }

        le16_unaligned_add_cpu(&cmd->size, config_len);

        return 0;
}

/* This function prepares command of sdio rx aggr info. */
static int mwifiex_cmd_sdio_rx_aggr_cfg(struct host_cmd_ds_command *cmd,
                                        u16 cmd_action, void *data_buf)
{
        struct host_cmd_sdio_sp_rx_aggr_cfg *cfg =
                                        &cmd->params.sdio_rx_aggr_cfg;

        cmd->command = cpu_to_le16(HostCmd_CMD_SDIO_SP_RX_AGGR_CFG);
        cmd->size =
                cpu_to_le16(sizeof(struct host_cmd_sdio_sp_rx_aggr_cfg) +
                            S_DS_GEN);
        cfg->action = cmd_action;
        if (cmd_action == HostCmd_ACT_GEN_SET)
                cfg->enable = *(u8 *)data_buf;

        return 0;
}

/* This function prepares command to get HS wakeup reason.
 *
 * Preparation includes -
 *      - Setting command ID, action and proper size
 *      - Ensuring correct endian-ness
 */
static int mwifiex_cmd_get_wakeup_reason(struct mwifiex_private *priv,
                                         struct host_cmd_ds_command *cmd)
{
        cmd->command = cpu_to_le16(HostCmd_CMD_HS_WAKEUP_REASON);
        cmd->size = cpu_to_le16(sizeof(struct host_cmd_ds_wakeup_reason) +
                                S_DS_GEN);

        return 0;
}

static int mwifiex_cmd_get_chan_info(struct host_cmd_ds_command *cmd,
                                     u16 cmd_action)
{
        struct host_cmd_ds_sta_configure *sta_cfg_cmd = &cmd->params.sta_cfg;
        struct host_cmd_tlv_channel_band *tlv_band_channel =
        (struct host_cmd_tlv_channel_band *)sta_cfg_cmd->tlv_buffer;

        cmd->command = cpu_to_le16(HostCmd_CMD_STA_CONFIGURE);
        cmd->size = cpu_to_le16(sizeof(*sta_cfg_cmd) +
                                sizeof(*tlv_band_channel) + S_DS_GEN);
        sta_cfg_cmd->action = cpu_to_le16(cmd_action);
        memset(tlv_band_channel, 0, sizeof(*tlv_band_channel));
        tlv_band_channel->header.type = cpu_to_le16(TLV_TYPE_CHANNELBANDLIST);
        tlv_band_channel->header.len  = cpu_to_le16(sizeof(*tlv_band_channel) -
                                        sizeof(struct mwifiex_ie_types_header));

        return 0;
}

/* This function check if the command is supported by firmware */
static int mwifiex_is_cmd_supported(struct mwifiex_private *priv, u16 cmd_no)
{
        if (!ISSUPP_ADHOC_ENABLED(priv->adapter->fw_cap_info)) {
                switch (cmd_no) {
                case HostCmd_CMD_802_11_IBSS_COALESCING_STATUS:
                case HostCmd_CMD_802_11_AD_HOC_START:
                case HostCmd_CMD_802_11_AD_HOC_JOIN:
                case HostCmd_CMD_802_11_AD_HOC_STOP:
                        return -EOPNOTSUPP;
                default:
                        break;
                }
        }

        return 0;
}

/*
 * This function prepares the 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_sta_prepare_cmd(struct mwifiex_private *priv, uint16_t cmd_no,
                            u16 cmd_action, u32 cmd_oid,
                            void *data_buf, void *cmd_buf)
{
        struct host_cmd_ds_command *cmd_ptr = cmd_buf;
        int ret = 0;

        if (mwifiex_is_cmd_supported(priv, cmd_no)) {
                mwifiex_dbg(priv->adapter, ERROR,
                            "0x%x command not supported by firmware\n",
                            cmd_no);
                return -EOPNOTSUPP;
        }

        /* Prepare command */
        switch (cmd_no) {
        case HostCmd_CMD_GET_HW_SPEC:
                ret = mwifiex_cmd_get_hw_spec(priv, cmd_ptr);
                break;
        case HostCmd_CMD_CFG_DATA:
                ret = mwifiex_cmd_cfg_data(priv, cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_MAC_CONTROL:
                ret = mwifiex_cmd_mac_control(priv, cmd_ptr, cmd_action,
                                              data_buf);
                break;
        case HostCmd_CMD_802_11_MAC_ADDRESS:
                ret = mwifiex_cmd_802_11_mac_address(priv, cmd_ptr,
                                                     cmd_action);
                break;
        case HostCmd_CMD_MAC_MULTICAST_ADR:
                ret = mwifiex_cmd_mac_multicast_adr(cmd_ptr, cmd_action,
                                                    data_buf);
                break;
        case HostCmd_CMD_TX_RATE_CFG:
                ret = mwifiex_cmd_tx_rate_cfg(priv, cmd_ptr, cmd_action,
                                              data_buf);
                break;
        case HostCmd_CMD_TXPWR_CFG:
                ret = mwifiex_cmd_tx_power_cfg(cmd_ptr, cmd_action,
                                               data_buf);
                break;
        case HostCmd_CMD_RF_TX_PWR:
                ret = mwifiex_cmd_rf_tx_power(priv, cmd_ptr, cmd_action,
                                              data_buf);
                break;
        case HostCmd_CMD_RF_ANTENNA:
                ret = mwifiex_cmd_rf_antenna(priv, cmd_ptr, cmd_action,
                                             data_buf);
                break;
        case HostCmd_CMD_802_11_PS_MODE_ENH:
                ret = mwifiex_cmd_enh_power_mode(priv, cmd_ptr, cmd_action,
                                                 (uint16_t)cmd_oid, data_buf);
                break;
        case HostCmd_CMD_802_11_HS_CFG_ENH:
                ret = mwifiex_cmd_802_11_hs_cfg(priv, cmd_ptr, cmd_action,
                                (struct mwifiex_hs_config_param *) data_buf);

                break;
        case HostCmd_CMD_802_11_SCAN:
                ret = mwifiex_cmd_802_11_scan(cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_802_11_BG_SCAN_CONFIG:
                ret = mwifiex_cmd_802_11_bg_scan_config(priv, cmd_ptr,
                                                        data_buf);
                break;
        case HostCmd_CMD_802_11_BG_SCAN_QUERY:
                ret = mwifiex_cmd_802_11_bg_scan_query(cmd_ptr);
                break;
        case HostCmd_CMD_802_11_ASSOCIATE:
                ret = mwifiex_cmd_802_11_associate(priv, cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_802_11_DEAUTHENTICATE:
                ret = mwifiex_cmd_802_11_deauthenticate(priv, cmd_ptr,
                                                        data_buf);
                break;
        case HostCmd_CMD_802_11_AD_HOC_START:
                ret = mwifiex_cmd_802_11_ad_hoc_start(priv, cmd_ptr,
                                                      data_buf);
                break;
        case HostCmd_CMD_802_11_GET_LOG:
                ret = mwifiex_cmd_802_11_get_log(cmd_ptr);
                break;
        case HostCmd_CMD_802_11_AD_HOC_JOIN:
                ret = mwifiex_cmd_802_11_ad_hoc_join(priv, cmd_ptr,
                                                     data_buf);
                break;
        case HostCmd_CMD_802_11_AD_HOC_STOP:
                ret = mwifiex_cmd_802_11_ad_hoc_stop(cmd_ptr);
                break;
        case HostCmd_CMD_RSSI_INFO:
                ret = mwifiex_cmd_802_11_rssi_info(priv, cmd_ptr, cmd_action);
                break;
        case HostCmd_CMD_802_11_SNMP_MIB:
                ret = mwifiex_cmd_802_11_snmp_mib(priv, cmd_ptr, cmd_action,
                                                  cmd_oid, data_buf);
                break;
        case HostCmd_CMD_802_11_TX_RATE_QUERY:
                cmd_ptr->command =
                        cpu_to_le16(HostCmd_CMD_802_11_TX_RATE_QUERY);
                cmd_ptr->size =
                        cpu_to_le16(sizeof(struct host_cmd_ds_tx_rate_query) +
                                    S_DS_GEN);
                priv->tx_rate = 0;
                ret = 0;
                break;
        case HostCmd_CMD_VERSION_EXT:
                cmd_ptr->command = cpu_to_le16(cmd_no);
                cmd_ptr->params.verext.version_str_sel =
                        (u8)(get_unaligned((u32 *)data_buf));
                memcpy(&cmd_ptr->params, data_buf,
                       sizeof(struct host_cmd_ds_version_ext));
                cmd_ptr->size =
                        cpu_to_le16(sizeof(struct host_cmd_ds_version_ext) +
                                    S_DS_GEN);
                ret = 0;
                break;
        case HostCmd_CMD_MGMT_FRAME_REG:
                cmd_ptr->command = cpu_to_le16(cmd_no);
                cmd_ptr->params.reg_mask.action = cpu_to_le16(cmd_action);
                cmd_ptr->params.reg_mask.mask = cpu_to_le32(
                                                get_unaligned((u32 *)data_buf));
                cmd_ptr->size =
                        cpu_to_le16(sizeof(struct host_cmd_ds_mgmt_frame_reg) +
                                    S_DS_GEN);
                ret = 0;
                break;
        case HostCmd_CMD_REMAIN_ON_CHAN:
                cmd_ptr->command = cpu_to_le16(cmd_no);
                memcpy(&cmd_ptr->params, data_buf,
                       sizeof(struct host_cmd_ds_remain_on_chan));
                cmd_ptr->size =
                      cpu_to_le16(sizeof(struct host_cmd_ds_remain_on_chan) +
                                  S_DS_GEN);
                break;
        case HostCmd_CMD_11AC_CFG:
                ret = mwifiex_cmd_11ac_cfg(priv, cmd_ptr, cmd_action, data_buf);
                break;
        case HostCmd_CMD_PACKET_AGGR_CTRL:
                cmd_ptr->command = cpu_to_le16(cmd_no);
                cmd_ptr->params.pkt_aggr_ctrl.action = cpu_to_le16(cmd_action);
                cmd_ptr->params.pkt_aggr_ctrl.enable =
                                                cpu_to_le16(*(u16 *)data_buf);
                cmd_ptr->size =
                        cpu_to_le16(sizeof(struct host_cmd_ds_pkt_aggr_ctrl) +
                                    S_DS_GEN);
                break;
        case HostCmd_CMD_P2P_MODE_CFG:
                cmd_ptr->command = cpu_to_le16(cmd_no);
                cmd_ptr->params.mode_cfg.action = cpu_to_le16(cmd_action);
                cmd_ptr->params.mode_cfg.mode = cpu_to_le16(
                                                get_unaligned((u16 *)data_buf));
                cmd_ptr->size =
                        cpu_to_le16(sizeof(struct host_cmd_ds_p2p_mode_cfg) +
                                    S_DS_GEN);
                break;
        case HostCmd_CMD_FUNC_INIT:
                if (priv->adapter->hw_status == MWIFIEX_HW_STATUS_RESET)
                        priv->adapter->hw_status = MWIFIEX_HW_STATUS_READY;
                cmd_ptr->command = cpu_to_le16(cmd_no);
                cmd_ptr->size = cpu_to_le16(S_DS_GEN);
                break;
        case HostCmd_CMD_FUNC_SHUTDOWN:
                priv->adapter->hw_status = MWIFIEX_HW_STATUS_RESET;
                cmd_ptr->command = cpu_to_le16(cmd_no);
                cmd_ptr->size = cpu_to_le16(S_DS_GEN);
                break;
        case HostCmd_CMD_11N_ADDBA_REQ:
                ret = mwifiex_cmd_11n_addba_req(cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_11N_DELBA:
                ret = mwifiex_cmd_11n_delba(cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_11N_ADDBA_RSP:
                ret = mwifiex_cmd_11n_addba_rsp_gen(priv, cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_802_11_KEY_MATERIAL:
                ret = mwifiex_cmd_802_11_key_material(priv, cmd_ptr,
                                                      cmd_action, cmd_oid,
                                                      data_buf);
                break;
        case HostCmd_CMD_802_11D_DOMAIN_INFO:
                ret = mwifiex_cmd_802_11d_domain_info(priv, cmd_ptr,
                                                      cmd_action);
                break;
        case HostCmd_CMD_RECONFIGURE_TX_BUFF:
                ret = mwifiex_cmd_recfg_tx_buf(priv, cmd_ptr, cmd_action,
                                               data_buf);
                break;
        case HostCmd_CMD_AMSDU_AGGR_CTRL:
                ret = mwifiex_cmd_amsdu_aggr_ctrl(cmd_ptr, cmd_action,
                                                  data_buf);
                break;
        case HostCmd_CMD_11N_CFG:
                ret = mwifiex_cmd_11n_cfg(priv, cmd_ptr, cmd_action, data_buf);
                break;
        case HostCmd_CMD_WMM_GET_STATUS:
                mwifiex_dbg(priv->adapter, CMD,
                            "cmd: WMM: WMM_GET_STATUS cmd sent\n");
                cmd_ptr->command = cpu_to_le16(HostCmd_CMD_WMM_GET_STATUS);
                cmd_ptr->size =
                        cpu_to_le16(sizeof(struct host_cmd_ds_wmm_get_status) +
                                    S_DS_GEN);
                ret = 0;
                break;
        case HostCmd_CMD_802_11_IBSS_COALESCING_STATUS:
                ret = mwifiex_cmd_ibss_coalescing_status(cmd_ptr, cmd_action,
                                                         data_buf);
                break;
        case HostCmd_CMD_802_11_SCAN_EXT:
                ret = mwifiex_cmd_802_11_scan_ext(priv, cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_MEM_ACCESS:
                ret = mwifiex_cmd_mem_access(cmd_ptr, cmd_action, data_buf);
                break;
        case HostCmd_CMD_MAC_REG_ACCESS:
        case HostCmd_CMD_BBP_REG_ACCESS:
        case HostCmd_CMD_RF_REG_ACCESS:
        case HostCmd_CMD_PMIC_REG_ACCESS:
        case HostCmd_CMD_CAU_REG_ACCESS:
        case HostCmd_CMD_802_11_EEPROM_ACCESS:
                ret = mwifiex_cmd_reg_access(cmd_ptr, cmd_action, data_buf);
                break;
        case HostCmd_CMD_SET_BSS_MODE:
                cmd_ptr->command = cpu_to_le16(cmd_no);
                if (priv->bss_mode == NL80211_IFTYPE_ADHOC)
                        cmd_ptr->params.bss_mode.con_type =
                                CONNECTION_TYPE_ADHOC;
                else if (priv->bss_mode == NL80211_IFTYPE_STATION ||
                         priv->bss_mode == NL80211_IFTYPE_P2P_CLIENT)
                        cmd_ptr->params.bss_mode.con_type =
                                CONNECTION_TYPE_INFRA;
                else if (priv->bss_mode == NL80211_IFTYPE_AP ||
                         priv->bss_mode == NL80211_IFTYPE_P2P_GO)
                        cmd_ptr->params.bss_mode.con_type = CONNECTION_TYPE_AP;
                cmd_ptr->size = cpu_to_le16(sizeof(struct
                                host_cmd_ds_set_bss_mode) + S_DS_GEN);
                ret = 0;
                break;
        case HostCmd_CMD_PCIE_DESC_DETAILS:
                ret = mwifiex_cmd_pcie_host_spec(priv, cmd_ptr, cmd_action);
                break;
        case HostCmd_CMD_802_11_SUBSCRIBE_EVENT:
                ret = mwifiex_cmd_802_11_subsc_evt(priv, cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_MEF_CFG:
                ret = mwifiex_cmd_mef_cfg(priv, cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_COALESCE_CFG:
                ret = mwifiex_cmd_coalesce_cfg(priv, cmd_ptr, cmd_action,
                                               data_buf);
                break;
        case HostCmd_CMD_TDLS_OPER:
                ret = mwifiex_cmd_tdls_oper(priv, cmd_ptr, data_buf);
                break;
        case HostCmd_CMD_TDLS_CONFIG:
                ret = mwifiex_cmd_tdls_config(priv, cmd_ptr, cmd_action,
                                              data_buf);
                break;
        case HostCmd_CMD_CHAN_REPORT_REQUEST:
                ret = mwifiex_cmd_issue_chan_report_request(priv, cmd_ptr,
                                                            data_buf);
                break;
        case HostCmd_CMD_SDIO_SP_RX_AGGR_CFG:
                ret = mwifiex_cmd_sdio_rx_aggr_cfg(cmd_ptr, cmd_action,
                                                   data_buf);
                break;
        case HostCmd_CMD_HS_WAKEUP_REASON:
                ret = mwifiex_cmd_get_wakeup_reason(priv, cmd_ptr);
                break;
        case HostCmd_CMD_MC_POLICY:
                ret = mwifiex_cmd_set_mc_policy(priv, cmd_ptr, cmd_action,
                                                data_buf);
                break;
        case HostCmd_CMD_ROBUST_COEX:
                ret = mwifiex_cmd_robust_coex(priv, cmd_ptr, cmd_action,
                                              data_buf);
                break;
        case HostCmd_CMD_GTK_REKEY_OFFLOAD_CFG:
                ret = mwifiex_cmd_gtk_rekey_offload(priv, cmd_ptr, cmd_action,
                                                    data_buf);
                break;
        case HostCmd_CMD_CHAN_REGION_CFG:
                ret = mwifiex_cmd_chan_region_cfg(priv, cmd_ptr, cmd_action);
                break;
        case HostCmd_CMD_FW_DUMP_EVENT:
                cmd_ptr->command = cpu_to_le16(cmd_no);
                cmd_ptr->size = cpu_to_le16(S_DS_GEN);
                break;
        case HostCmd_CMD_STA_CONFIGURE:
                ret = mwifiex_cmd_get_chan_info(cmd_ptr, cmd_action);
                break;
        default:
                mwifiex_dbg(priv->adapter, ERROR,
                            "PREP_CMD: unknown cmd- %#x\n", cmd_no);
                ret = -1;
                break;
        }
        return ret;
}

/*
 * This function issues commands to initialize firmware.
 *
 * This is called after firmware download to bring the card to
 * working state.
 * Function is also called during reinitialization of virtual
 * interfaces.
 *
 * The following commands are issued sequentially -
 *      - Set PCI-Express host buffer configuration (PCIE only)
 *      - Function init (for first interface only)
 *      - Read MAC address (for first interface only)
 *      - Reconfigure Tx buffer size (for first interface only)
 *      - Enable auto deep sleep (for first interface only)
 *      - Get Tx rate
 *      - Get Tx power
 *      - Set IBSS coalescing status
 *      - Set AMSDU aggregation control
 *      - Set 11d control
 *      - Set MAC control (this must be the last command to initialize firmware)
 */
int mwifiex_sta_init_cmd(struct mwifiex_private *priv, u8 first_sta, bool init)
{
        struct mwifiex_adapter *adapter = priv->adapter;
        int ret;
        struct mwifiex_ds_11n_amsdu_aggr_ctrl amsdu_aggr_ctrl;
        struct mwifiex_ds_auto_ds auto_ds;
        enum state_11d_t state_11d;
        struct mwifiex_ds_11n_tx_cfg tx_cfg;
        u8 sdio_sp_rx_aggr_enable;
        u16 packet_aggr_enable;
        int data;

        if (first_sta) {
                if (priv->adapter->iface_type == MWIFIEX_PCIE) {
                        ret = mwifiex_send_cmd(priv,
                                               HostCmd_CMD_PCIE_DESC_DETAILS,
                                               HostCmd_ACT_GEN_SET, 0, NULL,
                                               true);
                        if (ret)
                                return -1;
                }

                ret = mwifiex_send_cmd(priv, HostCmd_CMD_FUNC_INIT,
                                       HostCmd_ACT_GEN_SET, 0, NULL, true);
                if (ret)
                        return -1;

                /* Download calibration data to firmware.
                 * The cal-data can be read from device tree and/or
                 * a configuration file and downloaded to firmware.
                 */
                if (adapter->dt_node) {
                        if (of_property_read_u32(adapter->dt_node,
                                                 "marvell,wakeup-pin",
                                                 &data) == 0) {
                                pr_debug("Wakeup pin = 0x%x\n", data);
                                adapter->hs_cfg.gpio = data;
                        }

                        mwifiex_dnld_dt_cfgdata(priv, adapter->dt_node,
                                                "marvell,caldata");
                }

                if (adapter->cal_data)
                        mwifiex_send_cmd(priv, HostCmd_CMD_CFG_DATA,
                                         HostCmd_ACT_GEN_SET, 0, NULL, true);

                /* Read MAC address from HW */
                ret = mwifiex_send_cmd(priv, HostCmd_CMD_GET_HW_SPEC,
                                       HostCmd_ACT_GEN_GET, 0, NULL, true);
                if (ret)
                        return -1;

                /** Set SDIO Single Port RX Aggr Info */
                if (priv->adapter->iface_type == MWIFIEX_SDIO &&
                    ISSUPP_SDIO_SPA_ENABLED(priv->adapter->fw_cap_info) &&
                    !priv->adapter->host_disable_sdio_rx_aggr) {
                        sdio_sp_rx_aggr_enable = true;
                        ret = mwifiex_send_cmd(priv,
                                               HostCmd_CMD_SDIO_SP_RX_AGGR_CFG,
                                               HostCmd_ACT_GEN_SET, 0,
                                               &sdio_sp_rx_aggr_enable,
                                               true);
                        if (ret) {
                                mwifiex_dbg(priv->adapter, ERROR,
                                            "error while enabling SP aggregation..disable it");
                                adapter->sdio_rx_aggr_enable = false;
                        }
                }

                /* Reconfigure tx buf size */
                ret = mwifiex_send_cmd(priv, HostCmd_CMD_RECONFIGURE_TX_BUFF,
                                       HostCmd_ACT_GEN_SET, 0,
                                       &priv->adapter->tx_buf_size, true);
                if (ret)
                        return -1;

                if (priv->bss_type != MWIFIEX_BSS_TYPE_UAP) {
                        /* Enable IEEE PS by default */
                        priv->adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_PSP;
                        ret = mwifiex_send_cmd(priv,
                                               HostCmd_CMD_802_11_PS_MODE_ENH,
                                               EN_AUTO_PS, BITMAP_STA_PS, NULL,
                                               true);
                        if (ret)
                                return -1;
                }

                if (drcs) {
                        adapter->drcs_enabled = true;
                        if (ISSUPP_DRCS_ENABLED(adapter->fw_cap_info))
                                ret = mwifiex_send_cmd(priv,
                                                       HostCmd_CMD_MC_POLICY,
                                                       HostCmd_ACT_GEN_SET, 0,
                                                       &adapter->drcs_enabled,
                                                       true);
                        if (ret)
                                return -1;
                }

                mwifiex_send_cmd(priv, HostCmd_CMD_CHAN_REGION_CFG,
                                 HostCmd_ACT_GEN_GET, 0, NULL, true);
        }

        /* get tx rate */
        ret = mwifiex_send_cmd(priv, HostCmd_CMD_TX_RATE_CFG,
                               HostCmd_ACT_GEN_GET, 0, NULL, true);
        if (ret)
                return -1;
        priv->data_rate = 0;

        /* get tx power */
        ret = mwifiex_send_cmd(priv, HostCmd_CMD_RF_TX_PWR,
                               HostCmd_ACT_GEN_GET, 0, NULL, true);
        if (ret)
                return -1;

        memset(&amsdu_aggr_ctrl, 0, sizeof(amsdu_aggr_ctrl));
        amsdu_aggr_ctrl.enable = true;
        /* Send request to firmware */
        ret = mwifiex_send_cmd(priv, HostCmd_CMD_AMSDU_AGGR_CTRL,
                               HostCmd_ACT_GEN_SET, 0,
                               &amsdu_aggr_ctrl, true);
        if (ret)
                return -1;
        /* MAC Control must be the last command in init_fw */
        /* set MAC Control */
        ret = mwifiex_send_cmd(priv, HostCmd_CMD_MAC_CONTROL,
                               HostCmd_ACT_GEN_SET, 0,
                               &priv->curr_pkt_filter, true);
        if (ret)
                return -1;

        if (!disable_auto_ds && first_sta &&
            priv->bss_type != MWIFIEX_BSS_TYPE_UAP) {
                /* Enable auto deep sleep */
                auto_ds.auto_ds = DEEP_SLEEP_ON;
                auto_ds.idle_time = DEEP_SLEEP_IDLE_TIME;
                ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_PS_MODE_ENH,
                                       EN_AUTO_PS, BITMAP_AUTO_DS,
                                       &auto_ds, true);
                if (ret)
                        return -1;
        }

        if (priv->bss_type != MWIFIEX_BSS_TYPE_UAP) {
                /* Send cmd to FW to enable/disable 11D function */
                state_11d = ENABLE_11D;
                ret = mwifiex_send_cmd(priv, HostCmd_CMD_802_11_SNMP_MIB,
                                       HostCmd_ACT_GEN_SET, DOT11D_I,
                                       &state_11d, true);
                if (ret)
                        mwifiex_dbg(priv->adapter, ERROR,
                                    "11D: failed to enable 11D\n");
        }

        /* Pacekt aggregation handshake with firmware */
        if (aggr_ctrl) {
                packet_aggr_enable = true;
                mwifiex_send_cmd(priv, HostCmd_CMD_PACKET_AGGR_CTRL,
                                 HostCmd_ACT_GEN_SET, 0,
                                 &packet_aggr_enable, true);
        }

        /* Send cmd to FW to configure 11n specific configuration
         * (Short GI, Channel BW, Green field support etc.) for transmit
         */
        tx_cfg.tx_htcap = MWIFIEX_FW_DEF_HTTXCFG;
        ret = mwifiex_send_cmd(priv, HostCmd_CMD_11N_CFG,
                               HostCmd_ACT_GEN_SET, 0, &tx_cfg, true);

        if (init) {
                /* set last_init_cmd before sending the command */
                priv->adapter->last_init_cmd = HostCmd_CMD_11N_CFG;
                ret = -EINPROGRESS;
        }

        return ret;
}