sta_cmdresp.c

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/*
 * Marvell Wireless LAN device driver: station command response handling
 *
 * Copyright (C) 2011, 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"


/*
 * This function handles the command response error case.
 *
 * For scan response error, the function cancels all the pending
 * scan commands and generates an event to inform the applications
 * of the scan completion.
 *
 * For Power Save command failure, we do not retry enter PS
 * command in case of Ad-hoc mode.
 *
 * For all other response errors, the current command buffer is freed
 * and returned to the free command queue.
 */
static void
mwifiex_process_cmdresp_error(struct mwifiex_private *priv,
                  struct host_cmd_ds_command *resp)
{
    struct cmd_ctrl_node *cmd_node = NULL, *tmp_node;
    struct mwifiex_adapter *adapter = priv->adapter;
    struct host_cmd_ds_802_11_ps_mode_enh *pm;
    unsigned long flags;

    dev_err(adapter->dev, "CMD_RESP: cmd %#x error, result=%#x\n",
        resp->command, resp->result);

    if (adapter->curr_cmd->wait_q_enabled)
        adapter->cmd_wait_q.status = -1;

    switch (le16_to_cpu(resp->command)) {
    case HostCmd_CMD_802_11_PS_MODE_ENH:
        pm = &resp->params.psmode_enh;
        dev_err(adapter->dev,
            "PS_MODE_ENH cmd failed: result=0x%x action=0x%X\n",
            resp->result, le16_to_cpu(pm->action));
        /* We do not re-try enter-ps command in ad-hoc mode. */
        if (le16_to_cpu(pm->action) == EN_AUTO_PS &&
            (le16_to_cpu(pm->params.ps_bitmap) & BITMAP_STA_PS) &&
            priv->bss_mode == NL80211_IFTYPE_ADHOC)
            adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM;

        break;
    case HostCmd_CMD_802_11_SCAN:
        /* Cancel all pending scan command */
        spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
        list_for_each_entry_safe(cmd_node, tmp_node,
                     &adapter->scan_pending_q, list) {
            list_del(&cmd_node->list);
            spin_unlock_irqrestore(&adapter->scan_pending_q_lock,
                           flags);
            mwifiex_insert_cmd_to_free_q(adapter, cmd_node);
            spin_lock_irqsave(&adapter->scan_pending_q_lock, flags);
        }
        spin_unlock_irqrestore(&adapter->scan_pending_q_lock, flags);

        spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
        adapter->scan_processing = false;
        spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
        if (priv->report_scan_result)
            priv->report_scan_result = false;
        if (priv->scan_pending_on_block) {
            priv->scan_pending_on_block = false;
            up(&priv->async_sem);
        }
        break;

    case HostCmd_CMD_MAC_CONTROL:
        break;

    default:
        break;
    }
    /* Handling errors here */
    mwifiex_insert_cmd_to_free_q(adapter, adapter->curr_cmd);

    spin_lock_irqsave(&adapter->mwifiex_cmd_lock, flags);
    adapter->curr_cmd = NULL;
    spin_unlock_irqrestore(&adapter->mwifiex_cmd_lock, flags);
}

/*
 * This function handles the command response of get RSSI info.
 *
 * Handling includes changing the header fields into CPU format
 * and saving the following parameters in driver -
 *      - Last data and beacon RSSI value
 *      - Average data and beacon RSSI value
 *      - Last data and beacon NF value
 *      - Average data and beacon NF value
 *
 * The parameters are send to the application as well, along with
 * calculated SNR values.
 */
static int mwifiex_ret_802_11_rssi_info(struct mwifiex_private *priv,
                    struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_802_11_rssi_info_rsp *rssi_info_rsp =
                        &resp->params.rssi_info_rsp;
    struct mwifiex_ds_misc_subsc_evt *subsc_evt =
                        &priv->async_subsc_evt_storage;

    priv->data_rssi_last = le16_to_cpu(rssi_info_rsp->data_rssi_last);
    priv->data_nf_last = le16_to_cpu(rssi_info_rsp->data_nf_last);

    priv->data_rssi_avg = le16_to_cpu(rssi_info_rsp->data_rssi_avg);
    priv->data_nf_avg = le16_to_cpu(rssi_info_rsp->data_nf_avg);

    priv->bcn_rssi_last = le16_to_cpu(rssi_info_rsp->bcn_rssi_last);
    priv->bcn_nf_last = le16_to_cpu(rssi_info_rsp->bcn_nf_last);

    priv->bcn_rssi_avg = le16_to_cpu(rssi_info_rsp->bcn_rssi_avg);
    priv->bcn_nf_avg = le16_to_cpu(rssi_info_rsp->bcn_nf_avg);

    if (priv->subsc_evt_rssi_state == EVENT_HANDLED)
        return 0;

    memset(subsc_evt, 0x00, sizeof(struct mwifiex_ds_misc_subsc_evt));

    /* Resubscribe low and high rssi events with new thresholds */
    subsc_evt->events = BITMASK_BCN_RSSI_LOW | BITMASK_BCN_RSSI_HIGH;
    subsc_evt->action = HostCmd_ACT_BITWISE_SET;
    if (priv->subsc_evt_rssi_state == RSSI_LOW_RECVD) {
        subsc_evt->bcn_l_rssi_cfg.abs_value = abs(priv->bcn_rssi_avg -
                priv->cqm_rssi_hyst);
        subsc_evt->bcn_h_rssi_cfg.abs_value = abs(priv->cqm_rssi_thold);
    } else if (priv->subsc_evt_rssi_state == RSSI_HIGH_RECVD) {
        subsc_evt->bcn_l_rssi_cfg.abs_value = abs(priv->cqm_rssi_thold);
        subsc_evt->bcn_h_rssi_cfg.abs_value = abs(priv->bcn_rssi_avg +
                priv->cqm_rssi_hyst);
    }
    subsc_evt->bcn_l_rssi_cfg.evt_freq = 1;
    subsc_evt->bcn_h_rssi_cfg.evt_freq = 1;

    priv->subsc_evt_rssi_state = EVENT_HANDLED;

    mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11_SUBSCRIBE_EVENT,
                   0, 0, subsc_evt);

    return 0;
}

/*
 * This function handles the command response of set/get SNMP
 * MIB parameters.
 *
 * Handling includes changing the header fields into CPU format
 * and saving the parameter in driver.
 *
 * The following parameters are supported -
 *      - Fragmentation threshold
 *      - RTS threshold
 *      - Short retry limit
 */
static int mwifiex_ret_802_11_snmp_mib(struct mwifiex_private *priv,
                       struct host_cmd_ds_command *resp,
                       u32 *data_buf)
{
    struct host_cmd_ds_802_11_snmp_mib *smib = &resp->params.smib;
    u16 oid = le16_to_cpu(smib->oid);
    u16 query_type = le16_to_cpu(smib->query_type);
    u32 ul_temp;

    dev_dbg(priv->adapter->dev, "info: SNMP_RESP: oid value = %#x,"
        " query_type = %#x, buf size = %#x\n",
        oid, query_type, le16_to_cpu(smib->buf_size));
    if (query_type == HostCmd_ACT_GEN_GET) {
        ul_temp = le16_to_cpu(*((__le16 *) (smib->value)));
        if (data_buf)
            *data_buf = ul_temp;
        switch (oid) {
        case FRAG_THRESH_I:
            dev_dbg(priv->adapter->dev,
                "info: SNMP_RESP: FragThsd =%u\n", ul_temp);
            break;
        case RTS_THRESH_I:
            dev_dbg(priv->adapter->dev,
                "info: SNMP_RESP: RTSThsd =%u\n", ul_temp);
            break;
        case SHORT_RETRY_LIM_I:
            dev_dbg(priv->adapter->dev,
                "info: SNMP_RESP: TxRetryCount=%u\n", ul_temp);
            break;
        case DTIM_PERIOD_I:
            dev_dbg(priv->adapter->dev,
                "info: SNMP_RESP: DTIM period=%u\n", ul_temp);
        default:
            break;
        }
    }

    return 0;
}

/*
 * This function handles the command response of get log request
 *
 * Handling includes changing the header fields into CPU format
 * and sending the received parameters to application.
 */
static int mwifiex_ret_get_log(struct mwifiex_private *priv,
                   struct host_cmd_ds_command *resp,
                   struct mwifiex_ds_get_stats *stats)
{
    struct host_cmd_ds_802_11_get_log *get_log =
        &resp->params.get_log;

    if (stats) {
        stats->mcast_tx_frame = le32_to_cpu(get_log->mcast_tx_frame);
        stats->failed = le32_to_cpu(get_log->failed);
        stats->retry = le32_to_cpu(get_log->retry);
        stats->multi_retry = le32_to_cpu(get_log->multi_retry);
        stats->frame_dup = le32_to_cpu(get_log->frame_dup);
        stats->rts_success = le32_to_cpu(get_log->rts_success);
        stats->rts_failure = le32_to_cpu(get_log->rts_failure);
        stats->ack_failure = le32_to_cpu(get_log->ack_failure);
        stats->rx_frag = le32_to_cpu(get_log->rx_frag);
        stats->mcast_rx_frame = le32_to_cpu(get_log->mcast_rx_frame);
        stats->fcs_error = le32_to_cpu(get_log->fcs_error);
        stats->tx_frame = le32_to_cpu(get_log->tx_frame);
        stats->wep_icv_error[0] =
            le32_to_cpu(get_log->wep_icv_err_cnt[0]);
        stats->wep_icv_error[1] =
            le32_to_cpu(get_log->wep_icv_err_cnt[1]);
        stats->wep_icv_error[2] =
            le32_to_cpu(get_log->wep_icv_err_cnt[2]);
        stats->wep_icv_error[3] =
            le32_to_cpu(get_log->wep_icv_err_cnt[3]);
    }

    return 0;
}

/*
 * This function handles the command response of set/get Tx rate
 * configurations.
 *
 * Handling includes changing the header fields into CPU format
 * and saving the following parameters in driver -
 *      - DSSS rate bitmap
 *      - OFDM rate bitmap
 *      - HT MCS rate bitmaps
 *
 * Based on the new rate bitmaps, the function re-evaluates if
 * auto data rate has been activated. If not, it sends another
 * query to the firmware to get the current Tx data rate.
 */
static int mwifiex_ret_tx_rate_cfg(struct mwifiex_private *priv,
                   struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_tx_rate_cfg *rate_cfg = &resp->params.tx_rate_cfg;
    struct mwifiex_rate_scope *rate_scope;
    struct mwifiex_ie_types_header *head;
    u16 tlv, tlv_buf_len;
    u8 *tlv_buf;
    u32 i;

    tlv_buf = ((u8 *)rate_cfg) +
            sizeof(struct host_cmd_ds_tx_rate_cfg);
    tlv_buf_len = *(u16 *) (tlv_buf + sizeof(u16));

    while (tlv_buf && tlv_buf_len > 0) {
        tlv = (*tlv_buf);
        tlv = tlv | (*(tlv_buf + 1) << 8);

        switch (tlv) {
        case TLV_TYPE_RATE_SCOPE:
            rate_scope = (struct mwifiex_rate_scope *) tlv_buf;
            priv->bitmap_rates[0] =
                le16_to_cpu(rate_scope->hr_dsss_rate_bitmap);
            priv->bitmap_rates[1] =
                le16_to_cpu(rate_scope->ofdm_rate_bitmap);
            for (i = 0;
                 i <
                 sizeof(rate_scope->ht_mcs_rate_bitmap) /
                 sizeof(u16); i++)
                priv->bitmap_rates[2 + i] =
                    le16_to_cpu(rate_scope->
                            ht_mcs_rate_bitmap[i]);
            break;
            /* Add RATE_DROP tlv here */
        }

        head = (struct mwifiex_ie_types_header *) tlv_buf;
        tlv_buf += le16_to_cpu(head->len) + sizeof(*head);
        tlv_buf_len -= le16_to_cpu(head->len);
    }

    priv->is_data_rate_auto = mwifiex_is_rate_auto(priv);

    if (priv->is_data_rate_auto)
        priv->data_rate = 0;
    else
        return mwifiex_send_cmd_async(priv,
                          HostCmd_CMD_802_11_TX_RATE_QUERY,
                          HostCmd_ACT_GEN_GET, 0, NULL);

    return 0;
}

/*
 * This function handles the command response of get Tx power level.
 *
 * Handling includes saving the maximum and minimum Tx power levels
 * in driver, as well as sending the values to user.
 */
static int mwifiex_get_power_level(struct mwifiex_private *priv, void *data_buf)
{
    int length, max_power = -1, min_power = -1;
    struct mwifiex_types_power_group *pg_tlv_hdr;
    struct mwifiex_power_group *pg;

    if (!data_buf)
        return -1;

    pg_tlv_hdr = (struct mwifiex_types_power_group *)
        ((u8 *) data_buf + sizeof(struct host_cmd_ds_txpwr_cfg));
    pg = (struct mwifiex_power_group *)
        ((u8 *) pg_tlv_hdr + sizeof(struct mwifiex_types_power_group));
    length = pg_tlv_hdr->length;
    if (length > 0) {
        max_power = pg->power_max;
        min_power = pg->power_min;
        length -= sizeof(struct mwifiex_power_group);
    }
    while (length) {
        pg++;
        if (max_power < pg->power_max)
            max_power = pg->power_max;

        if (min_power > pg->power_min)
            min_power = pg->power_min;

        length -= sizeof(struct mwifiex_power_group);
    }
    if (pg_tlv_hdr->length > 0) {
        priv->min_tx_power_level = (u8) min_power;
        priv->max_tx_power_level = (u8) max_power;
    }

    return 0;
}

/*
 * This function handles the command response of set/get Tx power
 * configurations.
 *
 * Handling includes changing the header fields into CPU format
 * and saving the current Tx power level in driver.
 */
static int mwifiex_ret_tx_power_cfg(struct mwifiex_private *priv,
                    struct host_cmd_ds_command *resp)
{
    struct mwifiex_adapter *adapter = priv->adapter;
    struct host_cmd_ds_txpwr_cfg *txp_cfg = &resp->params.txp_cfg;
    struct mwifiex_types_power_group *pg_tlv_hdr;
    struct mwifiex_power_group *pg;
    u16 action = le16_to_cpu(txp_cfg->action);

    switch (action) {
    case HostCmd_ACT_GEN_GET:
        pg_tlv_hdr = (struct mwifiex_types_power_group *)
            ((u8 *) txp_cfg +
             sizeof(struct host_cmd_ds_txpwr_cfg));

        pg = (struct mwifiex_power_group *)
            ((u8 *) pg_tlv_hdr +
             sizeof(struct mwifiex_types_power_group));

        if (adapter->hw_status == MWIFIEX_HW_STATUS_INITIALIZING)
            mwifiex_get_power_level(priv, txp_cfg);

        priv->tx_power_level = (u16) pg->power_min;
        break;

    case HostCmd_ACT_GEN_SET:
        if (!le32_to_cpu(txp_cfg->mode))
            break;

        pg_tlv_hdr = (struct mwifiex_types_power_group *)
            ((u8 *) txp_cfg +
             sizeof(struct host_cmd_ds_txpwr_cfg));

        pg = (struct mwifiex_power_group *)
            ((u8 *) pg_tlv_hdr +
             sizeof(struct mwifiex_types_power_group));

        if (pg->power_max == pg->power_min)
            priv->tx_power_level = (u16) pg->power_min;
        break;
    default:
        dev_err(adapter->dev, "CMD_RESP: unknown cmd action %d\n",
            action);
        return 0;
    }
    dev_dbg(adapter->dev,
        "info: Current TxPower Level = %d, Max Power=%d, Min Power=%d\n",
           priv->tx_power_level, priv->max_tx_power_level,
           priv->min_tx_power_level);

    return 0;
}

/*
 * This function handles the command response of get RF Tx power.
 */
static int mwifiex_ret_rf_tx_power(struct mwifiex_private *priv,
                   struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_rf_tx_pwr *txp = &resp->params.txp;
    u16 action = le16_to_cpu(txp->action);

    priv->tx_power_level = le16_to_cpu(txp->cur_level);

    if (action == HostCmd_ACT_GEN_GET) {
        priv->max_tx_power_level = txp->max_power;
        priv->min_tx_power_level = txp->min_power;
    }

    dev_dbg(priv->adapter->dev,
        "Current TxPower Level=%d, Max Power=%d, Min Power=%d\n",
        priv->tx_power_level, priv->max_tx_power_level,
        priv->min_tx_power_level);

    return 0;
}

/*
 * This function handles the command response of set rf antenna
 */
static int mwifiex_ret_rf_antenna(struct mwifiex_private *priv,
                  struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_rf_ant_mimo *ant_mimo = &resp->params.ant_mimo;
    struct host_cmd_ds_rf_ant_siso *ant_siso = &resp->params.ant_siso;
    struct mwifiex_adapter *adapter = priv->adapter;

    if (adapter->hw_dev_mcs_support == HT_STREAM_2X2)
        dev_dbg(adapter->dev,
            "RF_ANT_RESP: Tx action = 0x%x, Tx Mode = 0x%04x"
            " Rx action = 0x%x, Rx Mode = 0x%04x\n",
            le16_to_cpu(ant_mimo->action_tx),
            le16_to_cpu(ant_mimo->tx_ant_mode),
            le16_to_cpu(ant_mimo->action_rx),
            le16_to_cpu(ant_mimo->rx_ant_mode));
    else
        dev_dbg(adapter->dev,
            "RF_ANT_RESP: action = 0x%x, Mode = 0x%04x\n",
            le16_to_cpu(ant_siso->action),
            le16_to_cpu(ant_siso->ant_mode));

    return 0;
}

/*
 * This function handles the command response of set/get MAC address.
 *
 * Handling includes saving the MAC address in driver.
 */
static int mwifiex_ret_802_11_mac_address(struct mwifiex_private *priv,
                      struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_802_11_mac_address *cmd_mac_addr =
                            &resp->params.mac_addr;

    memcpy(priv->curr_addr, cmd_mac_addr->mac_addr, ETH_ALEN);

    dev_dbg(priv->adapter->dev,
        "info: set mac address: %pM\n", priv->curr_addr);

    return 0;
}

/*
 * This function handles the command response of set/get MAC multicast
 * address.
 */
static int mwifiex_ret_mac_multicast_adr(struct mwifiex_private *priv,
                     struct host_cmd_ds_command *resp)
{
    return 0;
}

/*
 * This function handles the command response of get Tx rate query.
 *
 * Handling includes changing the header fields into CPU format
 * and saving the Tx rate and HT information parameters in driver.
 *
 * Both rate configuration and current data rate can be retrieved
 * with this request.
 */
static int mwifiex_ret_802_11_tx_rate_query(struct mwifiex_private *priv,
                        struct host_cmd_ds_command *resp)
{
    priv->tx_rate = resp->params.tx_rate.tx_rate;
    priv->tx_htinfo = resp->params.tx_rate.ht_info;
    if (!priv->is_data_rate_auto)
        priv->data_rate =
            mwifiex_index_to_data_rate(priv, priv->tx_rate,
                           priv->tx_htinfo);

    return 0;
}

/*
 * This function handles the command response of a deauthenticate
 * command.
 *
 * If the deauthenticated MAC matches the current BSS MAC, the connection
 * state is reset.
 */
static int mwifiex_ret_802_11_deauthenticate(struct mwifiex_private *priv,
                         struct host_cmd_ds_command *resp)
{
    struct mwifiex_adapter *adapter = priv->adapter;

    adapter->dbg.num_cmd_deauth++;
    if (!memcmp(resp->params.deauth.mac_addr,
            &priv->curr_bss_params.bss_descriptor.mac_address,
            sizeof(resp->params.deauth.mac_addr)))
        mwifiex_reset_connect_state(priv, WLAN_REASON_DEAUTH_LEAVING);

    return 0;
}

/*
 * This function handles the command response of ad-hoc stop.
 *
 * The function resets the connection state in driver.
 */
static int mwifiex_ret_802_11_ad_hoc_stop(struct mwifiex_private *priv,
                      struct host_cmd_ds_command *resp)
{
    mwifiex_reset_connect_state(priv, WLAN_REASON_DEAUTH_LEAVING);
    return 0;
}

/*
 * This function handles the command response of set/get key material.
 *
 * Handling includes updating the driver parameters to reflect the
 * changes.
 */
static int mwifiex_ret_802_11_key_material(struct mwifiex_private *priv,
                       struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_802_11_key_material *key =
                        &resp->params.key_material;

    if (le16_to_cpu(key->action) == HostCmd_ACT_GEN_SET) {
        if ((le16_to_cpu(key->key_param_set.key_info) & KEY_MCAST)) {
            dev_dbg(priv->adapter->dev, "info: key: GTK is set\n");
            priv->wpa_is_gtk_set = true;
            priv->scan_block = false;
        }
    }

    memset(priv->aes_key.key_param_set.key, 0,
           sizeof(key->key_param_set.key));
    priv->aes_key.key_param_set.key_len = key->key_param_set.key_len;
    memcpy(priv->aes_key.key_param_set.key, key->key_param_set.key,
           le16_to_cpu(priv->aes_key.key_param_set.key_len));

    return 0;
}

/*
 * This function handles the command response of get 11d domain information.
 */
static int mwifiex_ret_802_11d_domain_info(struct mwifiex_private *priv,
                       struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_802_11d_domain_info_rsp *domain_info =
        &resp->params.domain_info_resp;
    struct mwifiex_ietypes_domain_param_set *domain = &domain_info->domain;
    u16 action = le16_to_cpu(domain_info->action);
    u8 no_of_triplet;

    no_of_triplet = (u8) ((le16_to_cpu(domain->header.len)
                - IEEE80211_COUNTRY_STRING_LEN)
                  / sizeof(struct ieee80211_country_ie_triplet));

    dev_dbg(priv->adapter->dev,
        "info: 11D Domain Info Resp: no_of_triplet=%d\n",
        no_of_triplet);

    if (no_of_triplet > MWIFIEX_MAX_TRIPLET_802_11D) {
        dev_warn(priv->adapter->dev,
             "11D: invalid number of triplets %d returned\n",
             no_of_triplet);
        return -1;
    }

    switch (action) {
    case HostCmd_ACT_GEN_SET:  /* Proc Set Action */
        break;
    case HostCmd_ACT_GEN_GET:
        break;
    default:
        dev_err(priv->adapter->dev,
            "11D: invalid action:%d\n", domain_info->action);
        return -1;
    }

    return 0;
}

/*
 * This function handles the command response of get extended version.
 *
 * Handling includes forming the extended version string and sending it
 * to application.
 */
static int mwifiex_ret_ver_ext(struct mwifiex_private *priv,
                   struct host_cmd_ds_command *resp,
                   struct host_cmd_ds_version_ext *version_ext)
{
    struct host_cmd_ds_version_ext *ver_ext = &resp->params.verext;

    if (version_ext) {
        version_ext->version_str_sel = ver_ext->version_str_sel;
        memcpy(version_ext->version_str, ver_ext->version_str,
               sizeof(char) * 128);
        memcpy(priv->version_str, ver_ext->version_str, 128);
    }
    return 0;
}

/*
 * This function handles the command response of remain on channel.
 */
static int
mwifiex_ret_remain_on_chan(struct mwifiex_private *priv,
               struct host_cmd_ds_command *resp,
               struct host_cmd_ds_remain_on_chan *roc_cfg)
{
    struct host_cmd_ds_remain_on_chan *resp_cfg = &resp->params.roc_cfg;

    if (roc_cfg)
        memcpy(roc_cfg, resp_cfg, sizeof(*roc_cfg));

    return 0;
}

/*
 * This function handles the command response of P2P mode cfg.
 */
static int
mwifiex_ret_p2p_mode_cfg(struct mwifiex_private *priv,
             struct host_cmd_ds_command *resp,
             void *data_buf)
{
    struct host_cmd_ds_p2p_mode_cfg *mode_cfg = &resp->params.mode_cfg;

    if (data_buf)
        *((u16 *)data_buf) = le16_to_cpu(mode_cfg->mode);

    return 0;
}

/*
 * This function handles the command response of register access.
 *
 * The register value and offset are returned to the user. For EEPROM
 * access, the byte count is also returned.
 */
static int mwifiex_ret_reg_access(u16 type, struct host_cmd_ds_command *resp,
                  void *data_buf)
{
    struct mwifiex_ds_reg_rw *reg_rw;
    struct mwifiex_ds_read_eeprom *eeprom;
    union reg {
        struct host_cmd_ds_mac_reg_access *mac;
        struct host_cmd_ds_bbp_reg_access *bbp;
        struct host_cmd_ds_rf_reg_access *rf;
        struct host_cmd_ds_pmic_reg_access *pmic;
        struct host_cmd_ds_802_11_eeprom_access *eeprom;
    } r;

    if (!data_buf)
        return 0;

    reg_rw = data_buf;
    eeprom = data_buf;
    switch (type) {
    case HostCmd_CMD_MAC_REG_ACCESS:
        r.mac = &resp->params.mac_reg;
        reg_rw->offset = cpu_to_le32((u32) le16_to_cpu(r.mac->offset));
        reg_rw->value = r.mac->value;
        break;
    case HostCmd_CMD_BBP_REG_ACCESS:
        r.bbp = &resp->params.bbp_reg;
        reg_rw->offset = cpu_to_le32((u32) le16_to_cpu(r.bbp->offset));
        reg_rw->value = cpu_to_le32((u32) r.bbp->value);
        break;

    case HostCmd_CMD_RF_REG_ACCESS:
        r.rf = &resp->params.rf_reg;
        reg_rw->offset = cpu_to_le32((u32) le16_to_cpu(r.rf->offset));
        reg_rw->value = cpu_to_le32((u32) r.bbp->value);
        break;
    case HostCmd_CMD_PMIC_REG_ACCESS:
        r.pmic = &resp->params.pmic_reg;
        reg_rw->offset = cpu_to_le32((u32) le16_to_cpu(r.pmic->offset));
        reg_rw->value = cpu_to_le32((u32) r.pmic->value);
        break;
    case HostCmd_CMD_CAU_REG_ACCESS:
        r.rf = &resp->params.rf_reg;
        reg_rw->offset = cpu_to_le32((u32) le16_to_cpu(r.rf->offset));
        reg_rw->value = cpu_to_le32((u32) r.rf->value);
        break;
    case HostCmd_CMD_802_11_EEPROM_ACCESS:
        r.eeprom = &resp->params.eeprom;
        pr_debug("info: EEPROM read len=%x\n", r.eeprom->byte_count);
        if (le16_to_cpu(eeprom->byte_count) <
            le16_to_cpu(r.eeprom->byte_count)) {
            eeprom->byte_count = cpu_to_le16(0);
            pr_debug("info: EEPROM read length is too big\n");
            return -1;
        }
        eeprom->offset = r.eeprom->offset;
        eeprom->byte_count = r.eeprom->byte_count;
        if (le16_to_cpu(eeprom->byte_count) > 0)
            memcpy(&eeprom->value, &r.eeprom->value,
                   le16_to_cpu(r.eeprom->byte_count));

        break;
    default:
        return -1;
    }
    return 0;
}

/*
 * This function handles the command response of get IBSS coalescing status.
 *
 * If the received BSSID is different than the current one, the current BSSID,
 * beacon interval, ATIM window and ERP information are updated, along with
 * changing the ad-hoc state accordingly.
 */
static int mwifiex_ret_ibss_coalescing_status(struct mwifiex_private *priv,
                          struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_802_11_ibss_status *ibss_coal_resp =
                    &(resp->params.ibss_coalescing);

    if (le16_to_cpu(ibss_coal_resp->action) == HostCmd_ACT_GEN_SET)
        return 0;

    dev_dbg(priv->adapter->dev,
        "info: new BSSID %pM\n", ibss_coal_resp->bssid);

    /* If rsp has NULL BSSID, Just return..... No Action */
    if (is_zero_ether_addr(ibss_coal_resp->bssid)) {
        dev_warn(priv->adapter->dev, "new BSSID is NULL\n");
        return 0;
    }

    /* If BSSID is diff, modify current BSS parameters */
    if (memcmp(priv->curr_bss_params.bss_descriptor.mac_address,
           ibss_coal_resp->bssid, ETH_ALEN)) {
        /* BSSID */
        memcpy(priv->curr_bss_params.bss_descriptor.mac_address,
               ibss_coal_resp->bssid, ETH_ALEN);

        /* Beacon Interval */
        priv->curr_bss_params.bss_descriptor.beacon_period
            = le16_to_cpu(ibss_coal_resp->beacon_interval);

        /* ERP Information */
        priv->curr_bss_params.bss_descriptor.erp_flags =
            (u8) le16_to_cpu(ibss_coal_resp->use_g_rate_protect);

        priv->adhoc_state = ADHOC_COALESCED;
    }

    return 0;
}

/*
 * This function handles the command response for subscribe event command.
 */
static int mwifiex_ret_subsc_evt(struct mwifiex_private *priv,
                 struct host_cmd_ds_command *resp)
{
    struct host_cmd_ds_802_11_subsc_evt *cmd_sub_event =
        &resp->params.subsc_evt;

    /* For every subscribe event command (Get/Set/Clear), FW reports the
     * current set of subscribed events*/
    dev_dbg(priv->adapter->dev, "Bitmap of currently subscribed events: %16x\n",
        le16_to_cpu(cmd_sub_event->events));

    return 0;
}

/*
 * This function handles the command responses.
 *
 * This is a generic function, which calls command specific
 * response handlers based on the command ID.
 */
int mwifiex_process_sta_cmdresp(struct mwifiex_private *priv, u16 cmdresp_no,
                struct host_cmd_ds_command *resp)
{
    int ret = 0;
    struct mwifiex_adapter *adapter = priv->adapter;
    void *data_buf = adapter->curr_cmd->data_buf;

    /* If the command is not successful, cleanup and return failure */
    if (resp->result != HostCmd_RESULT_OK) {
        mwifiex_process_cmdresp_error(priv, resp);
        return -1;
    }
    /* Command successful, handle response */
    switch (cmdresp_no) {
    case HostCmd_CMD_GET_HW_SPEC:
        ret = mwifiex_ret_get_hw_spec(priv, resp);
        break;
    case HostCmd_CMD_MAC_CONTROL:
        break;
    case HostCmd_CMD_802_11_MAC_ADDRESS:
        ret = mwifiex_ret_802_11_mac_address(priv, resp);
        break;
    case HostCmd_CMD_MAC_MULTICAST_ADR:
        ret = mwifiex_ret_mac_multicast_adr(priv, resp);
        break;
    case HostCmd_CMD_TX_RATE_CFG:
        ret = mwifiex_ret_tx_rate_cfg(priv, resp);
        break;
    case HostCmd_CMD_802_11_SCAN:
        ret = mwifiex_ret_802_11_scan(priv, resp);
        adapter->curr_cmd->wait_q_enabled = false;
        break;
    case HostCmd_CMD_802_11_BG_SCAN_QUERY:
        ret = mwifiex_ret_802_11_scan(priv, resp);
        dev_dbg(adapter->dev,
            "info: CMD_RESP: BG_SCAN result is ready!\n");
        break;
    case HostCmd_CMD_TXPWR_CFG:
        ret = mwifiex_ret_tx_power_cfg(priv, resp);
        break;
    case HostCmd_CMD_RF_TX_PWR:
        ret = mwifiex_ret_rf_tx_power(priv, resp);
        break;
    case HostCmd_CMD_RF_ANTENNA:
        ret = mwifiex_ret_rf_antenna(priv, resp);
        break;
    case HostCmd_CMD_802_11_PS_MODE_ENH:
        ret = mwifiex_ret_enh_power_mode(priv, resp, data_buf);
        break;
    case HostCmd_CMD_802_11_HS_CFG_ENH:
        ret = mwifiex_ret_802_11_hs_cfg(priv, resp);
        break;
    case HostCmd_CMD_802_11_ASSOCIATE:
        ret = mwifiex_ret_802_11_associate(priv, resp);
        break;
    case HostCmd_CMD_802_11_DEAUTHENTICATE:
        ret = mwifiex_ret_802_11_deauthenticate(priv, resp);
        break;
    case HostCmd_CMD_802_11_AD_HOC_START:
    case HostCmd_CMD_802_11_AD_HOC_JOIN:
        ret = mwifiex_ret_802_11_ad_hoc(priv, resp);
        break;
    case HostCmd_CMD_802_11_AD_HOC_STOP:
        ret = mwifiex_ret_802_11_ad_hoc_stop(priv, resp);
        break;
    case HostCmd_CMD_802_11_GET_LOG:
        ret = mwifiex_ret_get_log(priv, resp, data_buf);
        break;
    case HostCmd_CMD_RSSI_INFO:
        ret = mwifiex_ret_802_11_rssi_info(priv, resp);
        break;
    case HostCmd_CMD_802_11_SNMP_MIB:
        ret = mwifiex_ret_802_11_snmp_mib(priv, resp, data_buf);
        break;
    case HostCmd_CMD_802_11_TX_RATE_QUERY:
        ret = mwifiex_ret_802_11_tx_rate_query(priv, resp);
        break;
    case HostCmd_CMD_VERSION_EXT:
        ret = mwifiex_ret_ver_ext(priv, resp, data_buf);
        break;
    case HostCmd_CMD_REMAIN_ON_CHAN:
        ret = mwifiex_ret_remain_on_chan(priv, resp, data_buf);
        break;
    case HostCmd_CMD_P2P_MODE_CFG:
        ret = mwifiex_ret_p2p_mode_cfg(priv, resp, data_buf);
        break;
    case HostCmd_CMD_MGMT_FRAME_REG:
    case HostCmd_CMD_FUNC_INIT:
    case HostCmd_CMD_FUNC_SHUTDOWN:
        break;
    case HostCmd_CMD_802_11_KEY_MATERIAL:
        ret = mwifiex_ret_802_11_key_material(priv, resp);
        break;
    case HostCmd_CMD_802_11D_DOMAIN_INFO:
        ret = mwifiex_ret_802_11d_domain_info(priv, resp);
        break;
    case HostCmd_CMD_11N_ADDBA_REQ:
        ret = mwifiex_ret_11n_addba_req(priv, resp);
        break;
    case HostCmd_CMD_11N_DELBA:
        ret = mwifiex_ret_11n_delba(priv, resp);
        break;
    case HostCmd_CMD_11N_ADDBA_RSP:
        ret = mwifiex_ret_11n_addba_resp(priv, resp);
        break;
    case HostCmd_CMD_RECONFIGURE_TX_BUFF:
        adapter->tx_buf_size = (u16) le16_to_cpu(resp->params.
                                 tx_buf.buff_size);
        adapter->tx_buf_size = (adapter->tx_buf_size
                    / MWIFIEX_SDIO_BLOCK_SIZE)
                       * MWIFIEX_SDIO_BLOCK_SIZE;
        adapter->curr_tx_buf_size = adapter->tx_buf_size;
        dev_dbg(adapter->dev,
            "cmd: max_tx_buf_size=%d, tx_buf_size=%d\n",
            adapter->max_tx_buf_size, adapter->tx_buf_size);

        if (adapter->if_ops.update_mp_end_port)
            adapter->if_ops.update_mp_end_port(adapter,
                le16_to_cpu(resp->params.tx_buf.mp_end_port));
        break;
    case HostCmd_CMD_AMSDU_AGGR_CTRL:
        break;
    case HostCmd_CMD_WMM_GET_STATUS:
        ret = mwifiex_ret_wmm_get_status(priv, resp);
        break;
    case HostCmd_CMD_802_11_IBSS_COALESCING_STATUS:
        ret = mwifiex_ret_ibss_coalescing_status(priv, resp);
        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_ret_reg_access(cmdresp_no, resp, data_buf);
        break;
    case HostCmd_CMD_SET_BSS_MODE:
        break;
    case HostCmd_CMD_11N_CFG:
        break;
    case HostCmd_CMD_PCIE_DESC_DETAILS:
        break;
    case HostCmd_CMD_802_11_SUBSCRIBE_EVENT:
        ret = mwifiex_ret_subsc_evt(priv, resp);
        break;
    case HostCmd_CMD_UAP_SYS_CONFIG:
        break;
    case HostCmd_CMD_UAP_BSS_START:
        priv->bss_started = 1;
        break;
    case HostCmd_CMD_UAP_BSS_STOP:
        priv->bss_started = 0;
        break;
    default:
        dev_err(adapter->dev, "CMD_RESP: unknown cmd response %#x\n",
            resp->command);
        break;
    }

    return ret;
}