wmi.c

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/*
 * Copyright (c) 2004-2011 Atheros Communications Inc.
 * Copyright (c) 2011-2012 Qualcomm Atheros, Inc.
 *
 * Permission to use, copy, modify, and/or distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <linux/ip.h>
#include <linux/in.h>
#include "core.h"
#include "debug.h"
#include "testmode.h"
#include "../regd.h"
#include "../regd_common.h"

static int ath6kl_wmi_sync_point(struct wmi *wmi, u8 if_idx);

static const s32 wmi_rate_tbl[][2] = {
    /* {W/O SGI, with SGI} */
    {1000, 1000},
    {2000, 2000},
    {5500, 5500},
    {11000, 11000},
    {6000, 6000},
    {9000, 9000},
    {12000, 12000},
    {18000, 18000},
    {24000, 24000},
    {36000, 36000},
    {48000, 48000},
    {54000, 54000},
    {6500, 7200},
    {13000, 14400},
    {19500, 21700},
    {26000, 28900},
    {39000, 43300},
    {52000, 57800},
    {58500, 65000},
    {65000, 72200},
    {13500, 15000},
    {27000, 30000},
    {40500, 45000},
    {54000, 60000},
    {81000, 90000},
    {108000, 120000},
    {121500, 135000},
    {135000, 150000},
    {0, 0}
};

/* 802.1d to AC mapping. Refer pg 57 of WMM-test-plan-v1.2 */
static const u8 up_to_ac[] = {
    WMM_AC_BE,
    WMM_AC_BK,
    WMM_AC_BK,
    WMM_AC_BE,
    WMM_AC_VI,
    WMM_AC_VI,
    WMM_AC_VO,
    WMM_AC_VO,
};

void ath6kl_wmi_set_control_ep(struct wmi *wmi, enum htc_endpoint_id ep_id)
{
    if (WARN_ON(ep_id == ENDPOINT_UNUSED || ep_id >= ENDPOINT_MAX))
        return;

    wmi->ep_id = ep_id;
}

enum htc_endpoint_id ath6kl_wmi_get_control_ep(struct wmi *wmi)
{
    return wmi->ep_id;
}

struct ath6kl_vif *ath6kl_get_vif_by_index(struct ath6kl *ar, u8 if_idx)
{
    struct ath6kl_vif *vif, *found = NULL;

    if (WARN_ON(if_idx > (ar->vif_max - 1)))
        return NULL;

    /* FIXME: Locking */
    spin_lock_bh(&ar->list_lock);
    list_for_each_entry(vif, &ar->vif_list, list) {
        if (vif->fw_vif_idx == if_idx) {
            found = vif;
            break;
        }
    }
    spin_unlock_bh(&ar->list_lock);

    return found;
}

/*  Performs DIX to 802.3 encapsulation for transmit packets.
 *  Assumes the entire DIX header is contigous and that there is
 *  enough room in the buffer for a 802.3 mac header and LLC+SNAP headers.
 */
int ath6kl_wmi_dix_2_dot3(struct wmi *wmi, struct sk_buff *skb)
{
    struct ath6kl_llc_snap_hdr *llc_hdr;
    struct ethhdr *eth_hdr;
    size_t new_len;
    __be16 type;
    u8 *datap;
    u16 size;

    if (WARN_ON(skb == NULL))
        return -EINVAL;

    size = sizeof(struct ath6kl_llc_snap_hdr) + sizeof(struct wmi_data_hdr);
    if (skb_headroom(skb) < size)
        return -ENOMEM;

    eth_hdr = (struct ethhdr *) skb->data;
    type = eth_hdr->h_proto;

    if (!is_ethertype(be16_to_cpu(type))) {
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "%s: pkt is already in 802.3 format\n", __func__);
        return 0;
    }

    new_len = skb->len - sizeof(*eth_hdr) + sizeof(*llc_hdr);

    skb_push(skb, sizeof(struct ath6kl_llc_snap_hdr));
    datap = skb->data;

    eth_hdr->h_proto = cpu_to_be16(new_len);

    memcpy(datap, eth_hdr, sizeof(*eth_hdr));

    llc_hdr = (struct ath6kl_llc_snap_hdr *)(datap + sizeof(*eth_hdr));
    llc_hdr->dsap = 0xAA;
    llc_hdr->ssap = 0xAA;
    llc_hdr->cntl = 0x03;
    llc_hdr->org_code[0] = 0x0;
    llc_hdr->org_code[1] = 0x0;
    llc_hdr->org_code[2] = 0x0;
    llc_hdr->eth_type = type;

    return 0;
}

static int ath6kl_wmi_meta_add(struct wmi *wmi, struct sk_buff *skb,
                   u8 *version, void *tx_meta_info)
{
    struct wmi_tx_meta_v1 *v1;
    struct wmi_tx_meta_v2 *v2;

    if (WARN_ON(skb == NULL || version == NULL))
        return -EINVAL;

    switch (*version) {
    case WMI_META_VERSION_1:
        skb_push(skb, WMI_MAX_TX_META_SZ);
        v1 = (struct wmi_tx_meta_v1 *) skb->data;
        v1->pkt_id = 0;
        v1->rate_plcy_id = 0;
        *version = WMI_META_VERSION_1;
        break;
    case WMI_META_VERSION_2:
        skb_push(skb, WMI_MAX_TX_META_SZ);
        v2 = (struct wmi_tx_meta_v2 *) skb->data;
        memcpy(v2, (struct wmi_tx_meta_v2 *) tx_meta_info,
               sizeof(struct wmi_tx_meta_v2));
        break;
    }

    return 0;
}

int ath6kl_wmi_data_hdr_add(struct wmi *wmi, struct sk_buff *skb,
                u8 msg_type, u32 flags,
                enum wmi_data_hdr_data_type data_type,
                u8 meta_ver, void *tx_meta_info, u8 if_idx)
{
    struct wmi_data_hdr *data_hdr;
    int ret;

    if (WARN_ON(skb == NULL || (if_idx > wmi->parent_dev->vif_max - 1)))
        return -EINVAL;

    if (tx_meta_info) {
        ret = ath6kl_wmi_meta_add(wmi, skb, &meta_ver, tx_meta_info);
        if (ret)
            return ret;
    }

    skb_push(skb, sizeof(struct wmi_data_hdr));

    data_hdr = (struct wmi_data_hdr *)skb->data;
    memset(data_hdr, 0, sizeof(struct wmi_data_hdr));

    data_hdr->info = msg_type << WMI_DATA_HDR_MSG_TYPE_SHIFT;
    data_hdr->info |= data_type << WMI_DATA_HDR_DATA_TYPE_SHIFT;

    if (flags & WMI_DATA_HDR_FLAGS_MORE)
        data_hdr->info |= WMI_DATA_HDR_MORE;

    if (flags & WMI_DATA_HDR_FLAGS_EOSP)
        data_hdr->info3 |= cpu_to_le16(WMI_DATA_HDR_EOSP);

    data_hdr->info2 |= cpu_to_le16(meta_ver << WMI_DATA_HDR_META_SHIFT);
    data_hdr->info3 |= cpu_to_le16(if_idx & WMI_DATA_HDR_IF_IDX_MASK);

    return 0;
}

u8 ath6kl_wmi_determine_user_priority(u8 *pkt, u32 layer2_pri)
{
    struct iphdr *ip_hdr = (struct iphdr *) pkt;
    u8 ip_pri;

    /*
     * Determine IPTOS priority
     *
     * IP-TOS - 8bits
     *          : DSCP(6-bits) ECN(2-bits)
     *          : DSCP - P2 P1 P0 X X X
     * where (P2 P1 P0) form 802.1D
     */
    ip_pri = ip_hdr->tos >> 5;
    ip_pri &= 0x7;

    if ((layer2_pri & 0x7) > ip_pri)
        return (u8) layer2_pri & 0x7;
    else
        return ip_pri;
}

u8 ath6kl_wmi_get_traffic_class(u8 user_priority)
{
    return  up_to_ac[user_priority & 0x7];
}

int ath6kl_wmi_implicit_create_pstream(struct wmi *wmi, u8 if_idx,
                       struct sk_buff *skb,
                       u32 layer2_priority, bool wmm_enabled,
                       u8 *ac)
{
    struct wmi_data_hdr *data_hdr;
    struct ath6kl_llc_snap_hdr *llc_hdr;
    struct wmi_create_pstream_cmd cmd;
    u32 meta_size, hdr_size;
    u16 ip_type = IP_ETHERTYPE;
    u8 stream_exist, usr_pri;
    u8 traffic_class = WMM_AC_BE;
    u8 *datap;

    if (WARN_ON(skb == NULL))
        return -EINVAL;

    datap = skb->data;
    data_hdr = (struct wmi_data_hdr *) datap;

    meta_size = ((le16_to_cpu(data_hdr->info2) >> WMI_DATA_HDR_META_SHIFT) &
             WMI_DATA_HDR_META_MASK) ? WMI_MAX_TX_META_SZ : 0;

    if (!wmm_enabled) {
        /* If WMM is disabled all traffic goes as BE traffic */
        usr_pri = 0;
    } else {
        hdr_size = sizeof(struct ethhdr);

        llc_hdr = (struct ath6kl_llc_snap_hdr *)(datap +
                             sizeof(struct
                                wmi_data_hdr) +
                             meta_size + hdr_size);

        if (llc_hdr->eth_type == htons(ip_type)) {
            /*
             * Extract the endpoint info from the TOS field
             * in the IP header.
             */
            usr_pri =
               ath6kl_wmi_determine_user_priority(((u8 *) llc_hdr) +
                    sizeof(struct ath6kl_llc_snap_hdr),
                    layer2_priority);
        } else
            usr_pri = layer2_priority & 0x7;

        /*
         * Queue the EAPOL frames in the same WMM_AC_VO queue
         * as that of management frames.
         */
        if (skb->protocol == cpu_to_be16(ETH_P_PAE))
            usr_pri = WMI_VOICE_USER_PRIORITY;
    }

    /*
     * workaround for WMM S5
     *
     * FIXME: wmi->traffic_class is always 100 so this test doesn't
     * make sense
     */
    if ((wmi->traffic_class == WMM_AC_VI) &&
        ((usr_pri == 5) || (usr_pri == 4)))
        usr_pri = 1;

    /* Convert user priority to traffic class */
    traffic_class = up_to_ac[usr_pri & 0x7];

    wmi_data_hdr_set_up(data_hdr, usr_pri);

    spin_lock_bh(&wmi->lock);
    stream_exist = wmi->fat_pipe_exist;
    spin_unlock_bh(&wmi->lock);

    if (!(stream_exist & (1 << traffic_class))) {
        memset(&cmd, 0, sizeof(cmd));
        cmd.traffic_class = traffic_class;
        cmd.user_pri = usr_pri;
        cmd.inactivity_int =
            cpu_to_le32(WMI_IMPLICIT_PSTREAM_INACTIVITY_INT);
        /* Implicit streams are created with TSID 0xFF */
        cmd.tsid = WMI_IMPLICIT_PSTREAM;
        ath6kl_wmi_create_pstream_cmd(wmi, if_idx, &cmd);
    }

    *ac = traffic_class;

    return 0;
}

int ath6kl_wmi_dot11_hdr_remove(struct wmi *wmi, struct sk_buff *skb)
{
    struct ieee80211_hdr_3addr *pwh, wh;
    struct ath6kl_llc_snap_hdr *llc_hdr;
    struct ethhdr eth_hdr;
    u32 hdr_size;
    u8 *datap;
    __le16 sub_type;

    if (WARN_ON(skb == NULL))
        return -EINVAL;

    datap = skb->data;
    pwh = (struct ieee80211_hdr_3addr *) datap;

    sub_type = pwh->frame_control & cpu_to_le16(IEEE80211_FCTL_STYPE);

    memcpy((u8 *) &wh, datap, sizeof(struct ieee80211_hdr_3addr));

    /* Strip off the 802.11 header */
    if (sub_type == cpu_to_le16(IEEE80211_STYPE_QOS_DATA)) {
        hdr_size = roundup(sizeof(struct ieee80211_qos_hdr),
                   sizeof(u32));
        skb_pull(skb, hdr_size);
    } else if (sub_type == cpu_to_le16(IEEE80211_STYPE_DATA))
        skb_pull(skb, sizeof(struct ieee80211_hdr_3addr));

    datap = skb->data;
    llc_hdr = (struct ath6kl_llc_snap_hdr *)(datap);

    memset(&eth_hdr, 0, sizeof(eth_hdr));
    eth_hdr.h_proto = llc_hdr->eth_type;

    switch ((le16_to_cpu(wh.frame_control)) &
        (IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS)) {
    case 0:
        memcpy(eth_hdr.h_dest, wh.addr1, ETH_ALEN);
        memcpy(eth_hdr.h_source, wh.addr2, ETH_ALEN);
        break;
    case IEEE80211_FCTL_TODS:
        memcpy(eth_hdr.h_dest, wh.addr3, ETH_ALEN);
        memcpy(eth_hdr.h_source, wh.addr2, ETH_ALEN);
        break;
    case IEEE80211_FCTL_FROMDS:
        memcpy(eth_hdr.h_dest, wh.addr1, ETH_ALEN);
        memcpy(eth_hdr.h_source, wh.addr3, ETH_ALEN);
        break;
    case IEEE80211_FCTL_FROMDS | IEEE80211_FCTL_TODS:
        break;
    }

    skb_pull(skb, sizeof(struct ath6kl_llc_snap_hdr));
    skb_push(skb, sizeof(eth_hdr));

    datap = skb->data;

    memcpy(datap, &eth_hdr, sizeof(eth_hdr));

    return 0;
}

/*
 * Performs 802.3 to DIX encapsulation for received packets.
 * Assumes the entire 802.3 header is contigous.
 */
int ath6kl_wmi_dot3_2_dix(struct sk_buff *skb)
{
    struct ath6kl_llc_snap_hdr *llc_hdr;
    struct ethhdr eth_hdr;
    u8 *datap;

    if (WARN_ON(skb == NULL))
        return -EINVAL;

    datap = skb->data;

    memcpy(&eth_hdr, datap, sizeof(eth_hdr));

    llc_hdr = (struct ath6kl_llc_snap_hdr *) (datap + sizeof(eth_hdr));
    eth_hdr.h_proto = llc_hdr->eth_type;

    skb_pull(skb, sizeof(struct ath6kl_llc_snap_hdr));
    datap = skb->data;

    memcpy(datap, &eth_hdr, sizeof(eth_hdr));

    return 0;
}

static int ath6kl_wmi_tx_complete_event_rx(u8 *datap, int len)
{
    struct tx_complete_msg_v1 *msg_v1;
    struct wmi_tx_complete_event *evt;
    int index;
    u16 size;

    evt = (struct wmi_tx_complete_event *) datap;

    ath6kl_dbg(ATH6KL_DBG_WMI, "comp: %d %d %d\n",
           evt->num_msg, evt->msg_len, evt->msg_type);

    for (index = 0; index < evt->num_msg; index++) {
        size = sizeof(struct wmi_tx_complete_event) +
            (index * sizeof(struct tx_complete_msg_v1));
        msg_v1 = (struct tx_complete_msg_v1 *)(datap + size);

        ath6kl_dbg(ATH6KL_DBG_WMI, "msg: %d %d %d %d\n",
               msg_v1->status, msg_v1->pkt_id,
               msg_v1->rate_idx, msg_v1->ack_failures);
    }

    return 0;
}

static int ath6kl_wmi_remain_on_chnl_event_rx(struct wmi *wmi, u8 *datap,
                          int len, struct ath6kl_vif *vif)
{
    struct wmi_remain_on_chnl_event *ev;
    u32 freq;
    u32 dur;
    struct ieee80211_channel *chan;
    struct ath6kl *ar = wmi->parent_dev;
    u32 id;

    if (len < sizeof(*ev))
        return -EINVAL;

    ev = (struct wmi_remain_on_chnl_event *) datap;
    freq = le32_to_cpu(ev->freq);
    dur = le32_to_cpu(ev->duration);
    ath6kl_dbg(ATH6KL_DBG_WMI, "remain_on_chnl: freq=%u dur=%u\n",
           freq, dur);
    chan = ieee80211_get_channel(ar->wiphy, freq);
    if (!chan) {
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "remain_on_chnl: Unknown channel (freq=%u)\n",
               freq);
        return -EINVAL;
    }
    id = vif->last_roc_id;
    cfg80211_ready_on_channel(&vif->wdev, id, chan, NL80211_CHAN_NO_HT,
                  dur, GFP_ATOMIC);

    return 0;
}

static int ath6kl_wmi_cancel_remain_on_chnl_event_rx(struct wmi *wmi,
                             u8 *datap, int len,
                             struct ath6kl_vif *vif)
{
    struct wmi_cancel_remain_on_chnl_event *ev;
    u32 freq;
    u32 dur;
    struct ieee80211_channel *chan;
    struct ath6kl *ar = wmi->parent_dev;
    u32 id;

    if (len < sizeof(*ev))
        return -EINVAL;

    ev = (struct wmi_cancel_remain_on_chnl_event *) datap;
    freq = le32_to_cpu(ev->freq);
    dur = le32_to_cpu(ev->duration);
    ath6kl_dbg(ATH6KL_DBG_WMI,
           "cancel_remain_on_chnl: freq=%u dur=%u status=%u\n",
           freq, dur, ev->status);
    chan = ieee80211_get_channel(ar->wiphy, freq);
    if (!chan) {
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "cancel_remain_on_chnl: Unknown channel (freq=%u)\n",
               freq);
        return -EINVAL;
    }
    if (vif->last_cancel_roc_id &&
        vif->last_cancel_roc_id + 1 == vif->last_roc_id)
        id = vif->last_cancel_roc_id; /* event for cancel command */
    else
        id = vif->last_roc_id; /* timeout on uncanceled r-o-c */
    vif->last_cancel_roc_id = 0;
    cfg80211_remain_on_channel_expired(&vif->wdev, id, chan,
                       NL80211_CHAN_NO_HT, GFP_ATOMIC);

    return 0;
}

static int ath6kl_wmi_tx_status_event_rx(struct wmi *wmi, u8 *datap, int len,
                     struct ath6kl_vif *vif)
{
    struct wmi_tx_status_event *ev;
    u32 id;

    if (len < sizeof(*ev))
        return -EINVAL;

    ev = (struct wmi_tx_status_event *) datap;
    id = le32_to_cpu(ev->id);
    ath6kl_dbg(ATH6KL_DBG_WMI, "tx_status: id=%x ack_status=%u\n",
           id, ev->ack_status);
    if (wmi->last_mgmt_tx_frame) {
        cfg80211_mgmt_tx_status(&vif->wdev, id,
                    wmi->last_mgmt_tx_frame,
                    wmi->last_mgmt_tx_frame_len,
                    !!ev->ack_status, GFP_ATOMIC);
        kfree(wmi->last_mgmt_tx_frame);
        wmi->last_mgmt_tx_frame = NULL;
        wmi->last_mgmt_tx_frame_len = 0;
    }

    return 0;
}

static int ath6kl_wmi_rx_probe_req_event_rx(struct wmi *wmi, u8 *datap, int len,
                        struct ath6kl_vif *vif)
{
    struct wmi_p2p_rx_probe_req_event *ev;
    u32 freq;
    u16 dlen;

    if (len < sizeof(*ev))
        return -EINVAL;

    ev = (struct wmi_p2p_rx_probe_req_event *) datap;
    freq = le32_to_cpu(ev->freq);
    dlen = le16_to_cpu(ev->len);
    if (datap + len < ev->data + dlen) {
        ath6kl_err("invalid wmi_p2p_rx_probe_req_event: len=%d dlen=%u\n",
               len, dlen);
        return -EINVAL;
    }
    ath6kl_dbg(ATH6KL_DBG_WMI,
           "rx_probe_req: len=%u freq=%u probe_req_report=%d\n",
           dlen, freq, vif->probe_req_report);

    if (vif->probe_req_report || vif->nw_type == AP_NETWORK)
        cfg80211_rx_mgmt(&vif->wdev, freq, 0,
                 ev->data, dlen, GFP_ATOMIC);

    return 0;
}

static int ath6kl_wmi_p2p_capabilities_event_rx(u8 *datap, int len)
{
    struct wmi_p2p_capabilities_event *ev;
    u16 dlen;

    if (len < sizeof(*ev))
        return -EINVAL;

    ev = (struct wmi_p2p_capabilities_event *) datap;
    dlen = le16_to_cpu(ev->len);
    ath6kl_dbg(ATH6KL_DBG_WMI, "p2p_capab: len=%u\n", dlen);

    return 0;
}

static int ath6kl_wmi_rx_action_event_rx(struct wmi *wmi, u8 *datap, int len,
                     struct ath6kl_vif *vif)
{
    struct wmi_rx_action_event *ev;
    u32 freq;
    u16 dlen;

    if (len < sizeof(*ev))
        return -EINVAL;

    ev = (struct wmi_rx_action_event *) datap;
    freq = le32_to_cpu(ev->freq);
    dlen = le16_to_cpu(ev->len);
    if (datap + len < ev->data + dlen) {
        ath6kl_err("invalid wmi_rx_action_event: len=%d dlen=%u\n",
               len, dlen);
        return -EINVAL;
    }
    ath6kl_dbg(ATH6KL_DBG_WMI, "rx_action: len=%u freq=%u\n", dlen, freq);
    cfg80211_rx_mgmt(&vif->wdev, freq, 0,
             ev->data, dlen, GFP_ATOMIC);

    return 0;
}

static int ath6kl_wmi_p2p_info_event_rx(u8 *datap, int len)
{
    struct wmi_p2p_info_event *ev;
    u32 flags;
    u16 dlen;

    if (len < sizeof(*ev))
        return -EINVAL;

    ev = (struct wmi_p2p_info_event *) datap;
    flags = le32_to_cpu(ev->info_req_flags);
    dlen = le16_to_cpu(ev->len);
    ath6kl_dbg(ATH6KL_DBG_WMI, "p2p_info: flags=%x len=%d\n", flags, dlen);

    if (flags & P2P_FLAG_CAPABILITIES_REQ) {
        struct wmi_p2p_capabilities *cap;
        if (dlen < sizeof(*cap))
            return -EINVAL;
        cap = (struct wmi_p2p_capabilities *) ev->data;
        ath6kl_dbg(ATH6KL_DBG_WMI, "p2p_info: GO Power Save = %d\n",
               cap->go_power_save);
    }

    if (flags & P2P_FLAG_MACADDR_REQ) {
        struct wmi_p2p_macaddr *mac;
        if (dlen < sizeof(*mac))
            return -EINVAL;
        mac = (struct wmi_p2p_macaddr *) ev->data;
        ath6kl_dbg(ATH6KL_DBG_WMI, "p2p_info: MAC Address = %pM\n",
               mac->mac_addr);
    }

    if (flags & P2P_FLAG_HMODEL_REQ) {
        struct wmi_p2p_hmodel *mod;
        if (dlen < sizeof(*mod))
            return -EINVAL;
        mod = (struct wmi_p2p_hmodel *) ev->data;
        ath6kl_dbg(ATH6KL_DBG_WMI, "p2p_info: P2P Model = %d (%s)\n",
               mod->p2p_model,
               mod->p2p_model ? "host" : "firmware");
    }
    return 0;
}

static inline struct sk_buff *ath6kl_wmi_get_new_buf(u32 size)
{
    struct sk_buff *skb;

    skb = ath6kl_buf_alloc(size);
    if (!skb)
        return NULL;

    skb_put(skb, size);
    if (size)
        memset(skb->data, 0, size);

    return skb;
}

/* Send a "simple" wmi command -- one with no arguments */
static int ath6kl_wmi_simple_cmd(struct wmi *wmi, u8 if_idx,
                 enum wmi_cmd_id cmd_id)
{
    struct sk_buff *skb;
    int ret;

    skb = ath6kl_wmi_get_new_buf(0);
    if (!skb)
        return -ENOMEM;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, cmd_id, NO_SYNC_WMIFLAG);

    return ret;
}

static int ath6kl_wmi_ready_event_rx(struct wmi *wmi, u8 *datap, int len)
{
    struct wmi_ready_event_2 *ev = (struct wmi_ready_event_2 *) datap;

    if (len < sizeof(struct wmi_ready_event_2))
        return -EINVAL;

    ath6kl_ready_event(wmi->parent_dev, ev->mac_addr,
               le32_to_cpu(ev->sw_version),
               le32_to_cpu(ev->abi_version), ev->phy_cap);

    return 0;
}

/*
 * Mechanism to modify the roaming behavior in the firmware. The lower rssi
 * at which the station has to roam can be passed with
 * WMI_SET_LRSSI_SCAN_PARAMS. Subtract 96 from RSSI to get the signal level
 * in dBm.
 */
int ath6kl_wmi_set_roam_lrssi_cmd(struct wmi *wmi, u8 lrssi)
{
    struct sk_buff *skb;
    struct roam_ctrl_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct roam_ctrl_cmd *) skb->data;

    cmd->info.params.lrssi_scan_period = cpu_to_le16(DEF_LRSSI_SCAN_PERIOD);
    cmd->info.params.lrssi_scan_threshold = a_cpu_to_sle16(lrssi +
                               DEF_SCAN_FOR_ROAM_INTVL);
    cmd->info.params.lrssi_roam_threshold = a_cpu_to_sle16(lrssi);
    cmd->info.params.roam_rssi_floor = DEF_LRSSI_ROAM_FLOOR;
    cmd->roam_ctrl = WMI_SET_LRSSI_SCAN_PARAMS;

    ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_SET_ROAM_CTRL_CMDID,
                NO_SYNC_WMIFLAG);

    return 0;
}

int ath6kl_wmi_force_roam_cmd(struct wmi *wmi, const u8 *bssid)
{
    struct sk_buff *skb;
    struct roam_ctrl_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct roam_ctrl_cmd *) skb->data;

    memcpy(cmd->info.bssid, bssid, ETH_ALEN);
    cmd->roam_ctrl = WMI_FORCE_ROAM;

    ath6kl_dbg(ATH6KL_DBG_WMI, "force roam to %pM\n", bssid);
    return ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_SET_ROAM_CTRL_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_ap_set_dtim_cmd(struct wmi *wmi, u8 if_idx, u32 dtim_period)
{
    struct sk_buff *skb;
    struct set_dtim_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct set_dtim_cmd *) skb->data;

    cmd->dtim_period = cpu_to_le32(dtim_period);
    return ath6kl_wmi_cmd_send(wmi, if_idx, skb,
                   WMI_AP_SET_DTIM_CMDID, NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_set_roam_mode_cmd(struct wmi *wmi, enum wmi_roam_mode mode)
{
    struct sk_buff *skb;
    struct roam_ctrl_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct roam_ctrl_cmd *) skb->data;

    cmd->info.roam_mode = mode;
    cmd->roam_ctrl = WMI_SET_ROAM_MODE;

    ath6kl_dbg(ATH6KL_DBG_WMI, "set roam mode %d\n", mode);
    return ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_SET_ROAM_CTRL_CMDID,
                   NO_SYNC_WMIFLAG);
}

static int ath6kl_wmi_connect_event_rx(struct wmi *wmi, u8 *datap, int len,
                       struct ath6kl_vif *vif)
{
    struct wmi_connect_event *ev;
    u8 *pie, *peie;

    if (len < sizeof(struct wmi_connect_event))
        return -EINVAL;

    ev = (struct wmi_connect_event *) datap;

    if (vif->nw_type == AP_NETWORK) {
        /* AP mode start/STA connected event */
        struct net_device *dev = vif->ndev;
        if (memcmp(dev->dev_addr, ev->u.ap_bss.bssid, ETH_ALEN) == 0) {
            ath6kl_dbg(ATH6KL_DBG_WMI,
                   "%s: freq %d bssid %pM (AP started)\n",
                   __func__, le16_to_cpu(ev->u.ap_bss.ch),
                   ev->u.ap_bss.bssid);
            ath6kl_connect_ap_mode_bss(
                vif, le16_to_cpu(ev->u.ap_bss.ch));
        } else {
            ath6kl_dbg(ATH6KL_DBG_WMI,
                   "%s: aid %u mac_addr %pM auth=%u keymgmt=%u cipher=%u apsd_info=%u (STA connected)\n",
                   __func__, ev->u.ap_sta.aid,
                   ev->u.ap_sta.mac_addr,
                   ev->u.ap_sta.auth,
                   ev->u.ap_sta.keymgmt,
                   le16_to_cpu(ev->u.ap_sta.cipher),
                   ev->u.ap_sta.apsd_info);

            ath6kl_connect_ap_mode_sta(
                vif, ev->u.ap_sta.aid, ev->u.ap_sta.mac_addr,
                ev->u.ap_sta.keymgmt,
                le16_to_cpu(ev->u.ap_sta.cipher),
                ev->u.ap_sta.auth, ev->assoc_req_len,
                ev->assoc_info + ev->beacon_ie_len,
                ev->u.ap_sta.apsd_info);
        }
        return 0;
    }

    /* STA/IBSS mode connection event */

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "wmi event connect freq %d bssid %pM listen_intvl %d beacon_intvl %d type %d\n",
           le16_to_cpu(ev->u.sta.ch), ev->u.sta.bssid,
           le16_to_cpu(ev->u.sta.listen_intvl),
           le16_to_cpu(ev->u.sta.beacon_intvl),
           le32_to_cpu(ev->u.sta.nw_type));

    /* Start of assoc rsp IEs */
    pie = ev->assoc_info + ev->beacon_ie_len +
          ev->assoc_req_len + (sizeof(u16) * 3); /* capinfo, status, aid */

    /* End of assoc rsp IEs */
    peie = ev->assoc_info + ev->beacon_ie_len + ev->assoc_req_len +
        ev->assoc_resp_len;

    while (pie < peie) {
        switch (*pie) {
        case WLAN_EID_VENDOR_SPECIFIC:
            if (pie[1] > 3 && pie[2] == 0x00 && pie[3] == 0x50 &&
                pie[4] == 0xf2 && pie[5] == WMM_OUI_TYPE) {
                /* WMM OUT (00:50:F2) */
                if (pie[1] > 5 &&
                    pie[6] == WMM_PARAM_OUI_SUBTYPE)
                    wmi->is_wmm_enabled = true;
            }
            break;
        }

        if (wmi->is_wmm_enabled)
            break;

        pie += pie[1] + 2;
    }

    ath6kl_connect_event(vif, le16_to_cpu(ev->u.sta.ch),
                 ev->u.sta.bssid,
                 le16_to_cpu(ev->u.sta.listen_intvl),
                 le16_to_cpu(ev->u.sta.beacon_intvl),
                 le32_to_cpu(ev->u.sta.nw_type),
                 ev->beacon_ie_len, ev->assoc_req_len,
                 ev->assoc_resp_len, ev->assoc_info);

    return 0;
}

static struct country_code_to_enum_rd *
ath6kl_regd_find_country(u16 countryCode)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
        if (allCountries[i].countryCode == countryCode)
            return &allCountries[i];
    }

    return NULL;
}

static struct reg_dmn_pair_mapping *
ath6kl_get_regpair(u16 regdmn)
{
    int i;

    if (regdmn == NO_ENUMRD)
        return NULL;

    for (i = 0; i < ARRAY_SIZE(regDomainPairs); i++) {
        if (regDomainPairs[i].regDmnEnum == regdmn)
            return &regDomainPairs[i];
    }

    return NULL;
}

static struct country_code_to_enum_rd *
ath6kl_regd_find_country_by_rd(u16 regdmn)
{
    int i;

    for (i = 0; i < ARRAY_SIZE(allCountries); i++) {
        if (allCountries[i].regDmnEnum == regdmn)
            return &allCountries[i];
    }

    return NULL;
}

static void ath6kl_wmi_regdomain_event(struct wmi *wmi, u8 *datap, int len)
{

    struct ath6kl_wmi_regdomain *ev;
    struct country_code_to_enum_rd *country = NULL;
    struct reg_dmn_pair_mapping *regpair = NULL;
    char alpha2[2];
    u32 reg_code;

    ev = (struct ath6kl_wmi_regdomain *) datap;
    reg_code = le32_to_cpu(ev->reg_code);

    if ((reg_code >> ATH6KL_COUNTRY_RD_SHIFT) & COUNTRY_ERD_FLAG)
        country = ath6kl_regd_find_country((u16) reg_code);
    else if (!(((u16) reg_code & WORLD_SKU_MASK) == WORLD_SKU_PREFIX)) {

        regpair = ath6kl_get_regpair((u16) reg_code);
        country = ath6kl_regd_find_country_by_rd((u16) reg_code);
        ath6kl_dbg(ATH6KL_DBG_WMI, "Regpair used: 0x%0x\n",
               regpair->regDmnEnum);
    }

    if (country && wmi->parent_dev->wiphy_registered) {
        alpha2[0] = country->isoName[0];
        alpha2[1] = country->isoName[1];

        regulatory_hint(wmi->parent_dev->wiphy, alpha2);

        ath6kl_dbg(ATH6KL_DBG_WMI, "Country alpha2 being used: %c%c\n",
               alpha2[0], alpha2[1]);
    }
}

static int ath6kl_wmi_disconnect_event_rx(struct wmi *wmi, u8 *datap, int len,
                      struct ath6kl_vif *vif)
{
    struct wmi_disconnect_event *ev;
    wmi->traffic_class = 100;

    if (len < sizeof(struct wmi_disconnect_event))
        return -EINVAL;

    ev = (struct wmi_disconnect_event *) datap;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "wmi event disconnect proto_reason %d bssid %pM wmi_reason %d assoc_resp_len %d\n",
           le16_to_cpu(ev->proto_reason_status), ev->bssid,
           ev->disconn_reason, ev->assoc_resp_len);

    wmi->is_wmm_enabled = false;

    ath6kl_disconnect_event(vif, ev->disconn_reason,
                ev->bssid, ev->assoc_resp_len, ev->assoc_info,
                le16_to_cpu(ev->proto_reason_status));

    return 0;
}

static int ath6kl_wmi_peer_node_event_rx(struct wmi *wmi, u8 *datap, int len)
{
    struct wmi_peer_node_event *ev;

    if (len < sizeof(struct wmi_peer_node_event))
        return -EINVAL;

    ev = (struct wmi_peer_node_event *) datap;

    if (ev->event_code == PEER_NODE_JOIN_EVENT)
        ath6kl_dbg(ATH6KL_DBG_WMI, "joined node with mac addr: %pM\n",
               ev->peer_mac_addr);
    else if (ev->event_code == PEER_NODE_LEAVE_EVENT)
        ath6kl_dbg(ATH6KL_DBG_WMI, "left node with mac addr: %pM\n",
               ev->peer_mac_addr);

    return 0;
}

static int ath6kl_wmi_tkip_micerr_event_rx(struct wmi *wmi, u8 *datap, int len,
                       struct ath6kl_vif *vif)
{
    struct wmi_tkip_micerr_event *ev;

    if (len < sizeof(struct wmi_tkip_micerr_event))
        return -EINVAL;

    ev = (struct wmi_tkip_micerr_event *) datap;

    ath6kl_tkip_micerr_event(vif, ev->key_id, ev->is_mcast);

    return 0;
}

void ath6kl_wmi_sscan_timer(unsigned long ptr)
{
    struct ath6kl_vif *vif = (struct ath6kl_vif *) ptr;

    cfg80211_sched_scan_results(vif->ar->wiphy);
}

static int ath6kl_wmi_bssinfo_event_rx(struct wmi *wmi, u8 *datap, int len,
                       struct ath6kl_vif *vif)
{
    struct wmi_bss_info_hdr2 *bih;
    u8 *buf;
    struct ieee80211_channel *channel;
    struct ath6kl *ar = wmi->parent_dev;
    struct ieee80211_mgmt *mgmt;
    struct cfg80211_bss *bss;

    if (len <= sizeof(struct wmi_bss_info_hdr2))
        return -EINVAL;

    bih = (struct wmi_bss_info_hdr2 *) datap;
    buf = datap + sizeof(struct wmi_bss_info_hdr2);
    len -= sizeof(struct wmi_bss_info_hdr2);

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "bss info evt - ch %u, snr %d, rssi %d, bssid \"%pM\" "
           "frame_type=%d\n",
           bih->ch, bih->snr, bih->snr - 95, bih->bssid,
           bih->frame_type);

    if (bih->frame_type != BEACON_FTYPE &&
        bih->frame_type != PROBERESP_FTYPE)
        return 0; /* Only update BSS table for now */

    if (bih->frame_type == BEACON_FTYPE &&
        test_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags)) {
        clear_bit(CLEAR_BSSFILTER_ON_BEACON, &vif->flags);
        ath6kl_wmi_bssfilter_cmd(ar->wmi, vif->fw_vif_idx,
                     NONE_BSS_FILTER, 0);
    }

    channel = ieee80211_get_channel(ar->wiphy, le16_to_cpu(bih->ch));
    if (channel == NULL)
        return -EINVAL;

    if (len < 8 + 2 + 2)
        return -EINVAL;

    if (bih->frame_type == BEACON_FTYPE &&
        test_bit(CONNECTED, &vif->flags) &&
        memcmp(bih->bssid, vif->bssid, ETH_ALEN) == 0) {
        const u8 *tim;
        tim = cfg80211_find_ie(WLAN_EID_TIM, buf + 8 + 2 + 2,
                       len - 8 - 2 - 2);
        if (tim && tim[1] >= 2) {
            vif->assoc_bss_dtim_period = tim[3];
            set_bit(DTIM_PERIOD_AVAIL, &vif->flags);
        }
    }

    /*
     * In theory, use of cfg80211_inform_bss() would be more natural here
     * since we do not have the full frame. However, at least for now,
     * cfg80211 can only distinguish Beacon and Probe Response frames from
     * each other when using cfg80211_inform_bss_frame(), so let's build a
     * fake IEEE 802.11 header to be able to take benefit of this.
     */
    mgmt = kmalloc(24 + len, GFP_ATOMIC);
    if (mgmt == NULL)
        return -EINVAL;

    if (bih->frame_type == BEACON_FTYPE) {
        mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                          IEEE80211_STYPE_BEACON);
        memset(mgmt->da, 0xff, ETH_ALEN);
    } else {
        struct net_device *dev = vif->ndev;

        mgmt->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
                          IEEE80211_STYPE_PROBE_RESP);
        memcpy(mgmt->da, dev->dev_addr, ETH_ALEN);
    }
    mgmt->duration = cpu_to_le16(0);
    memcpy(mgmt->sa, bih->bssid, ETH_ALEN);
    memcpy(mgmt->bssid, bih->bssid, ETH_ALEN);
    mgmt->seq_ctrl = cpu_to_le16(0);

    memcpy(&mgmt->u.beacon, buf, len);

    bss = cfg80211_inform_bss_frame(ar->wiphy, channel, mgmt,
                    24 + len, (bih->snr - 95) * 100,
                    GFP_ATOMIC);
    kfree(mgmt);
    if (bss == NULL)
        return -ENOMEM;
    cfg80211_put_bss(bss);

    /*
     * Firmware doesn't return any event when scheduled scan has
     * finished, so we need to use a timer to find out when there are
     * no more results.
     *
     * The timer is started from the first bss info received, otherwise
     * the timer would not ever fire if the scan interval is short
     * enough.
     */
    if (ar->state == ATH6KL_STATE_SCHED_SCAN &&
        !timer_pending(&vif->sched_scan_timer)) {
        mod_timer(&vif->sched_scan_timer, jiffies +
              msecs_to_jiffies(ATH6KL_SCHED_SCAN_RESULT_DELAY));
    }

    return 0;
}

/* Inactivity timeout of a fatpipe(pstream) at the target */
static int ath6kl_wmi_pstream_timeout_event_rx(struct wmi *wmi, u8 *datap,
                           int len)
{
    struct wmi_pstream_timeout_event *ev;

    if (len < sizeof(struct wmi_pstream_timeout_event))
        return -EINVAL;

    ev = (struct wmi_pstream_timeout_event *) datap;

    /*
     * When the pstream (fat pipe == AC) timesout, it means there were
     * no thinStreams within this pstream & it got implicitly created
     * due to data flow on this AC. We start the inactivity timer only
     * for implicitly created pstream. Just reset the host state.
     */
    spin_lock_bh(&wmi->lock);
    wmi->stream_exist_for_ac[ev->traffic_class] = 0;
    wmi->fat_pipe_exist &= ~(1 << ev->traffic_class);
    spin_unlock_bh(&wmi->lock);

    /* Indicate inactivity to driver layer for this fatpipe (pstream) */
    ath6kl_indicate_tx_activity(wmi->parent_dev, ev->traffic_class, false);

    return 0;
}

static int ath6kl_wmi_bitrate_reply_rx(struct wmi *wmi, u8 *datap, int len)
{
    struct wmi_bit_rate_reply *reply;
    s32 rate;
    u32 sgi, index;

    if (len < sizeof(struct wmi_bit_rate_reply))
        return -EINVAL;

    reply = (struct wmi_bit_rate_reply *) datap;

    ath6kl_dbg(ATH6KL_DBG_WMI, "rateindex %d\n", reply->rate_index);

    if (reply->rate_index == (s8) RATE_AUTO) {
        rate = RATE_AUTO;
    } else {
        index = reply->rate_index & 0x7f;
        sgi = (reply->rate_index & 0x80) ? 1 : 0;
        rate = wmi_rate_tbl[index][sgi];
    }

    ath6kl_wakeup_event(wmi->parent_dev);

    return 0;
}

static int ath6kl_wmi_test_rx(struct wmi *wmi, u8 *datap, int len)
{
    ath6kl_tm_rx_event(wmi->parent_dev, datap, len);

    return 0;
}

static int ath6kl_wmi_ratemask_reply_rx(struct wmi *wmi, u8 *datap, int len)
{
    if (len < sizeof(struct wmi_fix_rates_reply))
        return -EINVAL;

    ath6kl_wakeup_event(wmi->parent_dev);

    return 0;
}

static int ath6kl_wmi_ch_list_reply_rx(struct wmi *wmi, u8 *datap, int len)
{
    if (len < sizeof(struct wmi_channel_list_reply))
        return -EINVAL;

    ath6kl_wakeup_event(wmi->parent_dev);

    return 0;
}

static int ath6kl_wmi_tx_pwr_reply_rx(struct wmi *wmi, u8 *datap, int len)
{
    struct wmi_tx_pwr_reply *reply;

    if (len < sizeof(struct wmi_tx_pwr_reply))
        return -EINVAL;

    reply = (struct wmi_tx_pwr_reply *) datap;
    ath6kl_txpwr_rx_evt(wmi->parent_dev, reply->dbM);

    return 0;
}

static int ath6kl_wmi_keepalive_reply_rx(struct wmi *wmi, u8 *datap, int len)
{
    if (len < sizeof(struct wmi_get_keepalive_cmd))
        return -EINVAL;

    ath6kl_wakeup_event(wmi->parent_dev);

    return 0;
}

static int ath6kl_wmi_scan_complete_rx(struct wmi *wmi, u8 *datap, int len,
                       struct ath6kl_vif *vif)
{
    struct wmi_scan_complete_event *ev;

    ev = (struct wmi_scan_complete_event *) datap;

    ath6kl_scan_complete_evt(vif, a_sle32_to_cpu(ev->status));
    wmi->is_probe_ssid = false;

    return 0;
}

static int ath6kl_wmi_neighbor_report_event_rx(struct wmi *wmi, u8 *datap,
                           int len, struct ath6kl_vif *vif)
{
    struct wmi_neighbor_report_event *ev;
    u8 i;

    if (len < sizeof(*ev))
        return -EINVAL;
    ev = (struct wmi_neighbor_report_event *) datap;
    if (sizeof(*ev) + ev->num_neighbors * sizeof(struct wmi_neighbor_info)
        > len) {
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "truncated neighbor event (num=%d len=%d)\n",
               ev->num_neighbors, len);
        return -EINVAL;
    }
    for (i = 0; i < ev->num_neighbors; i++) {
        ath6kl_dbg(ATH6KL_DBG_WMI, "neighbor %d/%d - %pM 0x%x\n",
               i + 1, ev->num_neighbors, ev->neighbor[i].bssid,
               ev->neighbor[i].bss_flags);
        cfg80211_pmksa_candidate_notify(vif->ndev, i,
                        ev->neighbor[i].bssid,
                        !!(ev->neighbor[i].bss_flags &
                           WMI_PREAUTH_CAPABLE_BSS),
                        GFP_ATOMIC);
    }

    return 0;
}

/*
 * Target is reporting a programming error.  This is for
 * developer aid only.  Target only checks a few common violations
 * and it is responsibility of host to do all error checking.
 * Behavior of target after wmi error event is undefined.
 * A reset is recommended.
 */
static int ath6kl_wmi_error_event_rx(struct wmi *wmi, u8 *datap, int len)
{
    const char *type = "unknown error";
    struct wmi_cmd_error_event *ev;
    ev = (struct wmi_cmd_error_event *) datap;

    switch (ev->err_code) {
    case INVALID_PARAM:
        type = "invalid parameter";
        break;
    case ILLEGAL_STATE:
        type = "invalid state";
        break;
    case INTERNAL_ERROR:
        type = "internal error";
        break;
    }

    ath6kl_dbg(ATH6KL_DBG_WMI, "programming error, cmd=%d %s\n",
           ev->cmd_id, type);

    return 0;
}

static int ath6kl_wmi_stats_event_rx(struct wmi *wmi, u8 *datap, int len,
                     struct ath6kl_vif *vif)
{
    ath6kl_tgt_stats_event(vif, datap, len);

    return 0;
}

static u8 ath6kl_wmi_get_upper_threshold(s16 rssi,
                     struct sq_threshold_params *sq_thresh,
                     u32 size)
{
    u32 index;
    u8 threshold = (u8) sq_thresh->upper_threshold[size - 1];

    /* The list is already in sorted order. Get the next lower value */
    for (index = 0; index < size; index++) {
        if (rssi < sq_thresh->upper_threshold[index]) {
            threshold = (u8) sq_thresh->upper_threshold[index];
            break;
        }
    }

    return threshold;
}

static u8 ath6kl_wmi_get_lower_threshold(s16 rssi,
                     struct sq_threshold_params *sq_thresh,
                     u32 size)
{
    u32 index;
    u8 threshold = (u8) sq_thresh->lower_threshold[size - 1];

    /* The list is already in sorted order. Get the next lower value */
    for (index = 0; index < size; index++) {
        if (rssi > sq_thresh->lower_threshold[index]) {
            threshold = (u8) sq_thresh->lower_threshold[index];
            break;
        }
    }

    return threshold;
}

static int ath6kl_wmi_send_rssi_threshold_params(struct wmi *wmi,
            struct wmi_rssi_threshold_params_cmd *rssi_cmd)
{
    struct sk_buff *skb;
    struct wmi_rssi_threshold_params_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_rssi_threshold_params_cmd *) skb->data;
    memcpy(cmd, rssi_cmd, sizeof(struct wmi_rssi_threshold_params_cmd));

    return ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_RSSI_THRESHOLD_PARAMS_CMDID,
                   NO_SYNC_WMIFLAG);
}

static int ath6kl_wmi_rssi_threshold_event_rx(struct wmi *wmi, u8 *datap,
                          int len)
{
    struct wmi_rssi_threshold_event *reply;
    struct wmi_rssi_threshold_params_cmd cmd;
    struct sq_threshold_params *sq_thresh;
    enum wmi_rssi_threshold_val new_threshold;
    u8 upper_rssi_threshold, lower_rssi_threshold;
    s16 rssi;
    int ret;

    if (len < sizeof(struct wmi_rssi_threshold_event))
        return -EINVAL;

    reply = (struct wmi_rssi_threshold_event *) datap;
    new_threshold = (enum wmi_rssi_threshold_val) reply->range;
    rssi = a_sle16_to_cpu(reply->rssi);

    sq_thresh = &wmi->sq_threshld[SIGNAL_QUALITY_METRICS_RSSI];

    /*
     * Identify the threshold breached and communicate that to the app.
     * After that install a new set of thresholds based on the signal
     * quality reported by the target
     */
    if (new_threshold) {
        /* Upper threshold breached */
        if (rssi < sq_thresh->upper_threshold[0]) {
            ath6kl_dbg(ATH6KL_DBG_WMI,
                   "spurious upper rssi threshold event: %d\n",
                   rssi);
        } else if ((rssi < sq_thresh->upper_threshold[1]) &&
               (rssi >= sq_thresh->upper_threshold[0])) {
            new_threshold = WMI_RSSI_THRESHOLD1_ABOVE;
        } else if ((rssi < sq_thresh->upper_threshold[2]) &&
               (rssi >= sq_thresh->upper_threshold[1])) {
            new_threshold = WMI_RSSI_THRESHOLD2_ABOVE;
        } else if ((rssi < sq_thresh->upper_threshold[3]) &&
               (rssi >= sq_thresh->upper_threshold[2])) {
            new_threshold = WMI_RSSI_THRESHOLD3_ABOVE;
        } else if ((rssi < sq_thresh->upper_threshold[4]) &&
               (rssi >= sq_thresh->upper_threshold[3])) {
            new_threshold = WMI_RSSI_THRESHOLD4_ABOVE;
        } else if ((rssi < sq_thresh->upper_threshold[5]) &&
               (rssi >= sq_thresh->upper_threshold[4])) {
            new_threshold = WMI_RSSI_THRESHOLD5_ABOVE;
        } else if (rssi >= sq_thresh->upper_threshold[5]) {
            new_threshold = WMI_RSSI_THRESHOLD6_ABOVE;
        }
    } else {
        /* Lower threshold breached */
        if (rssi > sq_thresh->lower_threshold[0]) {
            ath6kl_dbg(ATH6KL_DBG_WMI,
                   "spurious lower rssi threshold event: %d %d\n",
                rssi, sq_thresh->lower_threshold[0]);
        } else if ((rssi > sq_thresh->lower_threshold[1]) &&
               (rssi <= sq_thresh->lower_threshold[0])) {
            new_threshold = WMI_RSSI_THRESHOLD6_BELOW;
        } else if ((rssi > sq_thresh->lower_threshold[2]) &&
               (rssi <= sq_thresh->lower_threshold[1])) {
            new_threshold = WMI_RSSI_THRESHOLD5_BELOW;
        } else if ((rssi > sq_thresh->lower_threshold[3]) &&
               (rssi <= sq_thresh->lower_threshold[2])) {
            new_threshold = WMI_RSSI_THRESHOLD4_BELOW;
        } else if ((rssi > sq_thresh->lower_threshold[4]) &&
               (rssi <= sq_thresh->lower_threshold[3])) {
            new_threshold = WMI_RSSI_THRESHOLD3_BELOW;
        } else if ((rssi > sq_thresh->lower_threshold[5]) &&
               (rssi <= sq_thresh->lower_threshold[4])) {
            new_threshold = WMI_RSSI_THRESHOLD2_BELOW;
        } else if (rssi <= sq_thresh->lower_threshold[5]) {
            new_threshold = WMI_RSSI_THRESHOLD1_BELOW;
        }
    }

    /* Calculate and install the next set of thresholds */
    lower_rssi_threshold = ath6kl_wmi_get_lower_threshold(rssi, sq_thresh,
                       sq_thresh->lower_threshold_valid_count);
    upper_rssi_threshold = ath6kl_wmi_get_upper_threshold(rssi, sq_thresh,
                       sq_thresh->upper_threshold_valid_count);

    /* Issue a wmi command to install the thresholds */
    cmd.thresh_above1_val = a_cpu_to_sle16(upper_rssi_threshold);
    cmd.thresh_below1_val = a_cpu_to_sle16(lower_rssi_threshold);
    cmd.weight = sq_thresh->weight;
    cmd.poll_time = cpu_to_le32(sq_thresh->polling_interval);

    ret = ath6kl_wmi_send_rssi_threshold_params(wmi, &cmd);
    if (ret) {
        ath6kl_err("unable to configure rssi thresholds\n");
        return -EIO;
    }

    return 0;
}

static int ath6kl_wmi_cac_event_rx(struct wmi *wmi, u8 *datap, int len,
                   struct ath6kl_vif *vif)
{
    struct wmi_cac_event *reply;
    struct ieee80211_tspec_ie *ts;
    u16 active_tsids, tsinfo;
    u8 tsid, index;
    u8 ts_id;

    if (len < sizeof(struct wmi_cac_event))
        return -EINVAL;

    reply = (struct wmi_cac_event *) datap;

    if ((reply->cac_indication == CAC_INDICATION_ADMISSION_RESP) &&
        (reply->status_code != IEEE80211_TSPEC_STATUS_ADMISS_ACCEPTED)) {

        ts = (struct ieee80211_tspec_ie *) &(reply->tspec_suggestion);
        tsinfo = le16_to_cpu(ts->tsinfo);
        tsid = (tsinfo >> IEEE80211_WMM_IE_TSPEC_TID_SHIFT) &
            IEEE80211_WMM_IE_TSPEC_TID_MASK;

        ath6kl_wmi_delete_pstream_cmd(wmi, vif->fw_vif_idx,
                          reply->ac, tsid);
    } else if (reply->cac_indication == CAC_INDICATION_NO_RESP) {
        /*
         * Following assumes that there is only one outstanding
         * ADDTS request when this event is received
         */
        spin_lock_bh(&wmi->lock);
        active_tsids = wmi->stream_exist_for_ac[reply->ac];
        spin_unlock_bh(&wmi->lock);

        for (index = 0; index < sizeof(active_tsids) * 8; index++) {
            if ((active_tsids >> index) & 1)
                break;
        }
        if (index < (sizeof(active_tsids) * 8))
            ath6kl_wmi_delete_pstream_cmd(wmi, vif->fw_vif_idx,
                              reply->ac, index);
    }

    /*
     * Clear active tsids and Add missing handling
     * for delete qos stream from AP
     */
    else if (reply->cac_indication == CAC_INDICATION_DELETE) {

        ts = (struct ieee80211_tspec_ie *) &(reply->tspec_suggestion);
        tsinfo = le16_to_cpu(ts->tsinfo);
        ts_id = ((tsinfo >> IEEE80211_WMM_IE_TSPEC_TID_SHIFT) &
             IEEE80211_WMM_IE_TSPEC_TID_MASK);

        spin_lock_bh(&wmi->lock);
        wmi->stream_exist_for_ac[reply->ac] &= ~(1 << ts_id);
        active_tsids = wmi->stream_exist_for_ac[reply->ac];
        spin_unlock_bh(&wmi->lock);

        /* Indicate stream inactivity to driver layer only if all tsids
         * within this AC are deleted.
         */
        if (!active_tsids) {
            ath6kl_indicate_tx_activity(wmi->parent_dev, reply->ac,
                            false);
            wmi->fat_pipe_exist &= ~(1 << reply->ac);
        }
    }

    return 0;
}

static int ath6kl_wmi_send_snr_threshold_params(struct wmi *wmi,
            struct wmi_snr_threshold_params_cmd *snr_cmd)
{
    struct sk_buff *skb;
    struct wmi_snr_threshold_params_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_snr_threshold_params_cmd *) skb->data;
    memcpy(cmd, snr_cmd, sizeof(struct wmi_snr_threshold_params_cmd));

    return ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_SNR_THRESHOLD_PARAMS_CMDID,
                   NO_SYNC_WMIFLAG);
}

static int ath6kl_wmi_snr_threshold_event_rx(struct wmi *wmi, u8 *datap,
                         int len)
{
    struct wmi_snr_threshold_event *reply;
    struct sq_threshold_params *sq_thresh;
    struct wmi_snr_threshold_params_cmd cmd;
    enum wmi_snr_threshold_val new_threshold;
    u8 upper_snr_threshold, lower_snr_threshold;
    s16 snr;
    int ret;

    if (len < sizeof(struct wmi_snr_threshold_event))
        return -EINVAL;

    reply = (struct wmi_snr_threshold_event *) datap;

    new_threshold = (enum wmi_snr_threshold_val) reply->range;
    snr = reply->snr;

    sq_thresh = &wmi->sq_threshld[SIGNAL_QUALITY_METRICS_SNR];

    /*
     * Identify the threshold breached and communicate that to the app.
     * After that install a new set of thresholds based on the signal
     * quality reported by the target.
     */
    if (new_threshold) {
        /* Upper threshold breached */
        if (snr < sq_thresh->upper_threshold[0]) {
            ath6kl_dbg(ATH6KL_DBG_WMI,
                   "spurious upper snr threshold event: %d\n",
                   snr);
        } else if ((snr < sq_thresh->upper_threshold[1]) &&
               (snr >= sq_thresh->upper_threshold[0])) {
            new_threshold = WMI_SNR_THRESHOLD1_ABOVE;
        } else if ((snr < sq_thresh->upper_threshold[2]) &&
               (snr >= sq_thresh->upper_threshold[1])) {
            new_threshold = WMI_SNR_THRESHOLD2_ABOVE;
        } else if ((snr < sq_thresh->upper_threshold[3]) &&
               (snr >= sq_thresh->upper_threshold[2])) {
            new_threshold = WMI_SNR_THRESHOLD3_ABOVE;
        } else if (snr >= sq_thresh->upper_threshold[3]) {
            new_threshold = WMI_SNR_THRESHOLD4_ABOVE;
        }
    } else {
        /* Lower threshold breached */
        if (snr > sq_thresh->lower_threshold[0]) {
            ath6kl_dbg(ATH6KL_DBG_WMI,
                   "spurious lower snr threshold event: %d\n",
                   sq_thresh->lower_threshold[0]);
        } else if ((snr > sq_thresh->lower_threshold[1]) &&
               (snr <= sq_thresh->lower_threshold[0])) {
            new_threshold = WMI_SNR_THRESHOLD4_BELOW;
        } else if ((snr > sq_thresh->lower_threshold[2]) &&
               (snr <= sq_thresh->lower_threshold[1])) {
            new_threshold = WMI_SNR_THRESHOLD3_BELOW;
        } else if ((snr > sq_thresh->lower_threshold[3]) &&
               (snr <= sq_thresh->lower_threshold[2])) {
            new_threshold = WMI_SNR_THRESHOLD2_BELOW;
        } else if (snr <= sq_thresh->lower_threshold[3]) {
            new_threshold = WMI_SNR_THRESHOLD1_BELOW;
        }
    }

    /* Calculate and install the next set of thresholds */
    lower_snr_threshold = ath6kl_wmi_get_lower_threshold(snr, sq_thresh,
                       sq_thresh->lower_threshold_valid_count);
    upper_snr_threshold = ath6kl_wmi_get_upper_threshold(snr, sq_thresh,
                       sq_thresh->upper_threshold_valid_count);

    /* Issue a wmi command to install the thresholds */
    cmd.thresh_above1_val = upper_snr_threshold;
    cmd.thresh_below1_val = lower_snr_threshold;
    cmd.weight = sq_thresh->weight;
    cmd.poll_time = cpu_to_le32(sq_thresh->polling_interval);

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "snr: %d, threshold: %d, lower: %d, upper: %d\n",
           snr, new_threshold,
           lower_snr_threshold, upper_snr_threshold);

    ret = ath6kl_wmi_send_snr_threshold_params(wmi, &cmd);
    if (ret) {
        ath6kl_err("unable to configure snr threshold\n");
        return -EIO;
    }

    return 0;
}

static int ath6kl_wmi_aplist_event_rx(struct wmi *wmi, u8 *datap, int len)
{
    u16 ap_info_entry_size;
    struct wmi_aplist_event *ev = (struct wmi_aplist_event *) datap;
    struct wmi_ap_info_v1 *ap_info_v1;
    u8 index;

    if (len < sizeof(struct wmi_aplist_event) ||
        ev->ap_list_ver != APLIST_VER1)
        return -EINVAL;

    ap_info_entry_size = sizeof(struct wmi_ap_info_v1);
    ap_info_v1 = (struct wmi_ap_info_v1 *) ev->ap_list;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "number of APs in aplist event: %d\n", ev->num_ap);

    if (len < (int) (sizeof(struct wmi_aplist_event) +
             (ev->num_ap - 1) * ap_info_entry_size))
        return -EINVAL;

    /* AP list version 1 contents */
    for (index = 0; index < ev->num_ap; index++) {
        ath6kl_dbg(ATH6KL_DBG_WMI, "AP#%d BSSID %pM Channel %d\n",
               index, ap_info_v1->bssid, ap_info_v1->channel);
        ap_info_v1++;
    }

    return 0;
}

int ath6kl_wmi_cmd_send(struct wmi *wmi, u8 if_idx, struct sk_buff *skb,
            enum wmi_cmd_id cmd_id, enum wmi_sync_flag sync_flag)
{
    struct wmi_cmd_hdr *cmd_hdr;
    enum htc_endpoint_id ep_id = wmi->ep_id;
    int ret;
    u16 info1;

    if (WARN_ON(skb == NULL || (if_idx > (wmi->parent_dev->vif_max - 1))))
        return -EINVAL;

    ath6kl_dbg(ATH6KL_DBG_WMI, "wmi tx id %d len %d flag %d\n",
           cmd_id, skb->len, sync_flag);
    ath6kl_dbg_dump(ATH6KL_DBG_WMI_DUMP, NULL, "wmi tx ",
            skb->data, skb->len);

    if (sync_flag >= END_WMIFLAG) {
        dev_kfree_skb(skb);
        return -EINVAL;
    }

    if ((sync_flag == SYNC_BEFORE_WMIFLAG) ||
        (sync_flag == SYNC_BOTH_WMIFLAG)) {
        /*
         * Make sure all data currently queued is transmitted before
         * the cmd execution.  Establish a new sync point.
         */
        ath6kl_wmi_sync_point(wmi, if_idx);
    }

    skb_push(skb, sizeof(struct wmi_cmd_hdr));

    cmd_hdr = (struct wmi_cmd_hdr *) skb->data;
    cmd_hdr->cmd_id = cpu_to_le16(cmd_id);
    info1 = if_idx & WMI_CMD_HDR_IF_ID_MASK;
    cmd_hdr->info1 = cpu_to_le16(info1);

    /* Only for OPT_TX_CMD, use BE endpoint. */
    if (cmd_id == WMI_OPT_TX_FRAME_CMDID) {
        ret = ath6kl_wmi_data_hdr_add(wmi, skb, OPT_MSGTYPE,
                          false, false, 0, NULL, if_idx);
        if (ret) {
            dev_kfree_skb(skb);
            return ret;
        }
        ep_id = ath6kl_ac2_endpoint_id(wmi->parent_dev, WMM_AC_BE);
    }

    ath6kl_control_tx(wmi->parent_dev, skb, ep_id);

    if ((sync_flag == SYNC_AFTER_WMIFLAG) ||
        (sync_flag == SYNC_BOTH_WMIFLAG)) {
        /*
         * Make sure all new data queued waits for the command to
         * execute. Establish a new sync point.
         */
        ath6kl_wmi_sync_point(wmi, if_idx);
    }

    return 0;
}

int ath6kl_wmi_connect_cmd(struct wmi *wmi, u8 if_idx,
               enum network_type nw_type,
               enum dot11_auth_mode dot11_auth_mode,
               enum auth_mode auth_mode,
               enum crypto_type pairwise_crypto,
               u8 pairwise_crypto_len,
               enum crypto_type group_crypto,
               u8 group_crypto_len, int ssid_len, u8 *ssid,
               u8 *bssid, u16 channel, u32 ctrl_flags,
               u8 nw_subtype)
{
    struct sk_buff *skb;
    struct wmi_connect_cmd *cc;
    int ret;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "wmi connect bssid %pM freq %d flags 0x%x ssid_len %d "
           "type %d dot11_auth %d auth %d pairwise %d group %d\n",
           bssid, channel, ctrl_flags, ssid_len, nw_type,
           dot11_auth_mode, auth_mode, pairwise_crypto, group_crypto);
    ath6kl_dbg_dump(ATH6KL_DBG_WMI, NULL, "ssid ", ssid, ssid_len);

    wmi->traffic_class = 100;

    if ((pairwise_crypto == NONE_CRYPT) && (group_crypto != NONE_CRYPT))
        return -EINVAL;

    if ((pairwise_crypto != NONE_CRYPT) && (group_crypto == NONE_CRYPT))
        return -EINVAL;

    skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_connect_cmd));
    if (!skb)
        return -ENOMEM;

    cc = (struct wmi_connect_cmd *) skb->data;

    if (ssid_len)
        memcpy(cc->ssid, ssid, ssid_len);

    cc->ssid_len = ssid_len;
    cc->nw_type = nw_type;
    cc->dot11_auth_mode = dot11_auth_mode;
    cc->auth_mode = auth_mode;
    cc->prwise_crypto_type = pairwise_crypto;
    cc->prwise_crypto_len = pairwise_crypto_len;
    cc->grp_crypto_type = group_crypto;
    cc->grp_crypto_len = group_crypto_len;
    cc->ch = cpu_to_le16(channel);
    cc->ctrl_flags = cpu_to_le32(ctrl_flags);
    cc->nw_subtype = nw_subtype;

    if (bssid != NULL)
        memcpy(cc->bssid, bssid, ETH_ALEN);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_CONNECT_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_reconnect_cmd(struct wmi *wmi, u8 if_idx, u8 *bssid,
                 u16 channel)
{
    struct sk_buff *skb;
    struct wmi_reconnect_cmd *cc;
    int ret;

    ath6kl_dbg(ATH6KL_DBG_WMI, "wmi reconnect bssid %pM freq %d\n",
           bssid, channel);

    wmi->traffic_class = 100;

    skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_reconnect_cmd));
    if (!skb)
        return -ENOMEM;

    cc = (struct wmi_reconnect_cmd *) skb->data;
    cc->channel = cpu_to_le16(channel);

    if (bssid != NULL)
        memcpy(cc->bssid, bssid, ETH_ALEN);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_RECONNECT_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_disconnect_cmd(struct wmi *wmi, u8 if_idx)
{
    int ret;

    ath6kl_dbg(ATH6KL_DBG_WMI, "wmi disconnect\n");

    wmi->traffic_class = 100;

    /* Disconnect command does not need to do a SYNC before. */
    ret = ath6kl_wmi_simple_cmd(wmi, if_idx, WMI_DISCONNECT_CMDID);

    return ret;
}

int ath6kl_wmi_beginscan_cmd(struct wmi *wmi, u8 if_idx,
                 enum wmi_scan_type scan_type,
                 u32 force_fgscan, u32 is_legacy,
                 u32 home_dwell_time, u32 force_scan_interval,
                 s8 num_chan, u16 *ch_list, u32 no_cck, u32 *rates)
{
    struct ieee80211_supported_band *sband;
    struct sk_buff *skb;
    struct wmi_begin_scan_cmd *sc;
    s8 size, *supp_rates;
    int i, band, ret;
    struct ath6kl *ar = wmi->parent_dev;
    int num_rates;
    u32 ratemask;

    size = sizeof(struct wmi_begin_scan_cmd);

    if ((scan_type != WMI_LONG_SCAN) && (scan_type != WMI_SHORT_SCAN))
        return -EINVAL;

    if (num_chan > WMI_MAX_CHANNELS)
        return -EINVAL;

    if (num_chan)
        size += sizeof(u16) * (num_chan - 1);

    skb = ath6kl_wmi_get_new_buf(size);
    if (!skb)
        return -ENOMEM;

    sc = (struct wmi_begin_scan_cmd *) skb->data;
    sc->scan_type = scan_type;
    sc->force_fg_scan = cpu_to_le32(force_fgscan);
    sc->is_legacy = cpu_to_le32(is_legacy);
    sc->home_dwell_time = cpu_to_le32(home_dwell_time);
    sc->force_scan_intvl = cpu_to_le32(force_scan_interval);
    sc->no_cck = cpu_to_le32(no_cck);
    sc->num_ch = num_chan;

    for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
        sband = ar->wiphy->bands[band];

        if (!sband)
            continue;

        ratemask = rates[band];
        supp_rates = sc->supp_rates[band].rates;
        num_rates = 0;

        for (i = 0; i < sband->n_bitrates; i++) {
            if ((BIT(i) & ratemask) == 0)
                continue; /* skip rate */
            supp_rates[num_rates++] =
                (u8) (sband->bitrates[i].bitrate / 5);
        }
        sc->supp_rates[band].nrates = num_rates;
    }

    for (i = 0; i < num_chan; i++)
        sc->ch_list[i] = cpu_to_le16(ch_list[i]);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_BEGIN_SCAN_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

/* ath6kl_wmi_start_scan_cmd is to be deprecated. Use
 * ath6kl_wmi_begin_scan_cmd instead. The new function supports P2P
 * mgmt operations using station interface.
 */
int ath6kl_wmi_startscan_cmd(struct wmi *wmi, u8 if_idx,
                 enum wmi_scan_type scan_type,
                 u32 force_fgscan, u32 is_legacy,
                 u32 home_dwell_time, u32 force_scan_interval,
                 s8 num_chan, u16 *ch_list)
{
    struct sk_buff *skb;
    struct wmi_start_scan_cmd *sc;
    s8 size;
    int i, ret;

    size = sizeof(struct wmi_start_scan_cmd);

    if ((scan_type != WMI_LONG_SCAN) && (scan_type != WMI_SHORT_SCAN))
        return -EINVAL;

    if (num_chan > WMI_MAX_CHANNELS)
        return -EINVAL;

    if (num_chan)
        size += sizeof(u16) * (num_chan - 1);

    skb = ath6kl_wmi_get_new_buf(size);
    if (!skb)
        return -ENOMEM;

    sc = (struct wmi_start_scan_cmd *) skb->data;
    sc->scan_type = scan_type;
    sc->force_fg_scan = cpu_to_le32(force_fgscan);
    sc->is_legacy = cpu_to_le32(is_legacy);
    sc->home_dwell_time = cpu_to_le32(home_dwell_time);
    sc->force_scan_intvl = cpu_to_le32(force_scan_interval);
    sc->num_ch = num_chan;

    for (i = 0; i < num_chan; i++)
        sc->ch_list[i] = cpu_to_le16(ch_list[i]);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_START_SCAN_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_scanparams_cmd(struct wmi *wmi, u8 if_idx,
                  u16 fg_start_sec,
                  u16 fg_end_sec, u16 bg_sec,
                  u16 minact_chdw_msec, u16 maxact_chdw_msec,
                  u16 pas_chdw_msec, u8 short_scan_ratio,
                  u8 scan_ctrl_flag, u32 max_dfsch_act_time,
                  u16 maxact_scan_per_ssid)
{
    struct sk_buff *skb;
    struct wmi_scan_params_cmd *sc;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*sc));
    if (!skb)
        return -ENOMEM;

    sc = (struct wmi_scan_params_cmd *) skb->data;
    sc->fg_start_period = cpu_to_le16(fg_start_sec);
    sc->fg_end_period = cpu_to_le16(fg_end_sec);
    sc->bg_period = cpu_to_le16(bg_sec);
    sc->minact_chdwell_time = cpu_to_le16(minact_chdw_msec);
    sc->maxact_chdwell_time = cpu_to_le16(maxact_chdw_msec);
    sc->pas_chdwell_time = cpu_to_le16(pas_chdw_msec);
    sc->short_scan_ratio = short_scan_ratio;
    sc->scan_ctrl_flags = scan_ctrl_flag;
    sc->max_dfsch_act_time = cpu_to_le32(max_dfsch_act_time);
    sc->maxact_scan_per_ssid = cpu_to_le16(maxact_scan_per_ssid);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_SCAN_PARAMS_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_bssfilter_cmd(struct wmi *wmi, u8 if_idx, u8 filter, u32 ie_mask)
{
    struct sk_buff *skb;
    struct wmi_bss_filter_cmd *cmd;
    int ret;

    if (filter >= LAST_BSS_FILTER)
        return -EINVAL;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_bss_filter_cmd *) skb->data;
    cmd->bss_filter = filter;
    cmd->ie_mask = cpu_to_le32(ie_mask);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_BSS_FILTER_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_probedssid_cmd(struct wmi *wmi, u8 if_idx, u8 index, u8 flag,
                  u8 ssid_len, u8 *ssid)
{
    struct sk_buff *skb;
    struct wmi_probed_ssid_cmd *cmd;
    int ret;

    if (index >= MAX_PROBED_SSIDS)
        return -EINVAL;

    if (ssid_len > sizeof(cmd->ssid))
        return -EINVAL;

    if ((flag & (DISABLE_SSID_FLAG | ANY_SSID_FLAG)) && (ssid_len > 0))
        return -EINVAL;

    if ((flag & SPECIFIC_SSID_FLAG) && !ssid_len)
        return -EINVAL;

    if (flag & SPECIFIC_SSID_FLAG)
        wmi->is_probe_ssid = true;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_probed_ssid_cmd *) skb->data;
    cmd->entry_index = index;
    cmd->flag = flag;
    cmd->ssid_len = ssid_len;
    memcpy(cmd->ssid, ssid, ssid_len);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_PROBED_SSID_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_listeninterval_cmd(struct wmi *wmi, u8 if_idx,
                  u16 listen_interval,
                  u16 listen_beacons)
{
    struct sk_buff *skb;
    struct wmi_listen_int_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_listen_int_cmd *) skb->data;
    cmd->listen_intvl = cpu_to_le16(listen_interval);
    cmd->num_beacons = cpu_to_le16(listen_beacons);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_LISTEN_INT_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_bmisstime_cmd(struct wmi *wmi, u8 if_idx,
                 u16 bmiss_time, u16 num_beacons)
{
    struct sk_buff *skb;
    struct wmi_bmiss_time_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_bmiss_time_cmd *) skb->data;
    cmd->bmiss_time = cpu_to_le16(bmiss_time);
    cmd->num_beacons = cpu_to_le16(num_beacons);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_BMISS_TIME_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_powermode_cmd(struct wmi *wmi, u8 if_idx, u8 pwr_mode)
{
    struct sk_buff *skb;
    struct wmi_power_mode_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_power_mode_cmd *) skb->data;
    cmd->pwr_mode = pwr_mode;
    wmi->pwr_mode = pwr_mode;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_POWER_MODE_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_pmparams_cmd(struct wmi *wmi, u8 if_idx, u16 idle_period,
                u16 ps_poll_num, u16 dtim_policy,
                u16 tx_wakeup_policy, u16 num_tx_to_wakeup,
                u16 ps_fail_event_policy)
{
    struct sk_buff *skb;
    struct wmi_power_params_cmd *pm;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*pm));
    if (!skb)
        return -ENOMEM;

    pm = (struct wmi_power_params_cmd *)skb->data;
    pm->idle_period = cpu_to_le16(idle_period);
    pm->pspoll_number = cpu_to_le16(ps_poll_num);
    pm->dtim_policy = cpu_to_le16(dtim_policy);
    pm->tx_wakeup_policy = cpu_to_le16(tx_wakeup_policy);
    pm->num_tx_to_wakeup = cpu_to_le16(num_tx_to_wakeup);
    pm->ps_fail_event_policy = cpu_to_le16(ps_fail_event_policy);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_POWER_PARAMS_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_disctimeout_cmd(struct wmi *wmi, u8 if_idx, u8 timeout)
{
    struct sk_buff *skb;
    struct wmi_disc_timeout_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_disc_timeout_cmd *) skb->data;
    cmd->discon_timeout = timeout;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_DISC_TIMEOUT_CMDID,
                  NO_SYNC_WMIFLAG);

    if (ret == 0)
        ath6kl_debug_set_disconnect_timeout(wmi->parent_dev, timeout);

    return ret;
}

int ath6kl_wmi_addkey_cmd(struct wmi *wmi, u8 if_idx, u8 key_index,
              enum crypto_type key_type,
              u8 key_usage, u8 key_len,
              u8 *key_rsc, unsigned int key_rsc_len,
              u8 *key_material,
              u8 key_op_ctrl, u8 *mac_addr,
              enum wmi_sync_flag sync_flag)
{
    struct sk_buff *skb;
    struct wmi_add_cipher_key_cmd *cmd;
    int ret;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "addkey cmd: key_index=%u key_type=%d key_usage=%d key_len=%d key_op_ctrl=%d\n",
           key_index, key_type, key_usage, key_len, key_op_ctrl);

    if ((key_index > WMI_MAX_KEY_INDEX) || (key_len > WMI_MAX_KEY_LEN) ||
        (key_material == NULL) || key_rsc_len > 8)
        return -EINVAL;

    if ((WEP_CRYPT != key_type) && (NULL == key_rsc))
        return -EINVAL;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_add_cipher_key_cmd *) skb->data;
    cmd->key_index = key_index;
    cmd->key_type = key_type;
    cmd->key_usage = key_usage;
    cmd->key_len = key_len;
    memcpy(cmd->key, key_material, key_len);

    if (key_rsc != NULL)
        memcpy(cmd->key_rsc, key_rsc, key_rsc_len);

    cmd->key_op_ctrl = key_op_ctrl;

    if (mac_addr)
        memcpy(cmd->key_mac_addr, mac_addr, ETH_ALEN);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_ADD_CIPHER_KEY_CMDID,
                  sync_flag);

    return ret;
}

int ath6kl_wmi_add_krk_cmd(struct wmi *wmi, u8 if_idx, u8 *krk)
{
    struct sk_buff *skb;
    struct wmi_add_krk_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_add_krk_cmd *) skb->data;
    memcpy(cmd->krk, krk, WMI_KRK_LEN);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_ADD_KRK_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_deletekey_cmd(struct wmi *wmi, u8 if_idx, u8 key_index)
{
    struct sk_buff *skb;
    struct wmi_delete_cipher_key_cmd *cmd;
    int ret;

    if (key_index > WMI_MAX_KEY_INDEX)
        return -EINVAL;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_delete_cipher_key_cmd *) skb->data;
    cmd->key_index = key_index;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_DELETE_CIPHER_KEY_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_setpmkid_cmd(struct wmi *wmi, u8 if_idx, const u8 *bssid,
                const u8 *pmkid, bool set)
{
    struct sk_buff *skb;
    struct wmi_setpmkid_cmd *cmd;
    int ret;

    if (bssid == NULL)
        return -EINVAL;

    if (set && pmkid == NULL)
        return -EINVAL;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_setpmkid_cmd *) skb->data;
    memcpy(cmd->bssid, bssid, ETH_ALEN);
    if (set) {
        memcpy(cmd->pmkid, pmkid, sizeof(cmd->pmkid));
        cmd->enable = PMKID_ENABLE;
    } else {
        memset(cmd->pmkid, 0, sizeof(cmd->pmkid));
        cmd->enable = PMKID_DISABLE;
    }

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_PMKID_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

static int ath6kl_wmi_data_sync_send(struct wmi *wmi, struct sk_buff *skb,
                  enum htc_endpoint_id ep_id, u8 if_idx)
{
    struct wmi_data_hdr *data_hdr;
    int ret;

    if (WARN_ON(skb == NULL || ep_id == wmi->ep_id))
        return -EINVAL;

    skb_push(skb, sizeof(struct wmi_data_hdr));

    data_hdr = (struct wmi_data_hdr *) skb->data;
    data_hdr->info = SYNC_MSGTYPE << WMI_DATA_HDR_MSG_TYPE_SHIFT;
    data_hdr->info3 = cpu_to_le16(if_idx & WMI_DATA_HDR_IF_IDX_MASK);

    ret = ath6kl_control_tx(wmi->parent_dev, skb, ep_id);

    return ret;
}

static int ath6kl_wmi_sync_point(struct wmi *wmi, u8 if_idx)
{
    struct sk_buff *skb;
    struct wmi_sync_cmd *cmd;
    struct wmi_data_sync_bufs data_sync_bufs[WMM_NUM_AC];
    enum htc_endpoint_id ep_id;
    u8 index, num_pri_streams = 0;
    int ret = 0;

    memset(data_sync_bufs, 0, sizeof(data_sync_bufs));

    spin_lock_bh(&wmi->lock);

    for (index = 0; index < WMM_NUM_AC; index++) {
        if (wmi->fat_pipe_exist & (1 << index)) {
            num_pri_streams++;
            data_sync_bufs[num_pri_streams - 1].traffic_class =
                index;
        }
    }

    spin_unlock_bh(&wmi->lock);

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb) {
        ret = -ENOMEM;
        goto free_skb;
    }

    cmd = (struct wmi_sync_cmd *) skb->data;

    /*
     * In the SYNC cmd sent on the control Ep, send a bitmap
     * of the data eps on which the Data Sync will be sent
     */
    cmd->data_sync_map = wmi->fat_pipe_exist;

    for (index = 0; index < num_pri_streams; index++) {
        data_sync_bufs[index].skb = ath6kl_buf_alloc(0);
        if (data_sync_bufs[index].skb == NULL) {
            ret = -ENOMEM;
            break;
        }
    }

    /*
     * If buffer allocation for any of the dataSync fails,
     * then do not send the Synchronize cmd on the control ep
     */
    if (ret)
        goto free_skb;

    /*
     * Send sync cmd followed by sync data messages on all
     * endpoints being used
     */
    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SYNCHRONIZE_CMDID,
                  NO_SYNC_WMIFLAG);

    if (ret)
        goto free_skb;

    /* cmd buffer sent, we no longer own it */
    skb = NULL;

    for (index = 0; index < num_pri_streams; index++) {

        if (WARN_ON(!data_sync_bufs[index].skb))
            break;

        ep_id = ath6kl_ac2_endpoint_id(wmi->parent_dev,
                           data_sync_bufs[index].
                           traffic_class);
        ret =
            ath6kl_wmi_data_sync_send(wmi, data_sync_bufs[index].skb,
                          ep_id, if_idx);

        if (ret)
            break;

        data_sync_bufs[index].skb = NULL;
    }

free_skb:
    /* free up any resources left over (possibly due to an error) */
    if (skb)
        dev_kfree_skb(skb);

    for (index = 0; index < num_pri_streams; index++) {
        if (data_sync_bufs[index].skb != NULL) {
            dev_kfree_skb((struct sk_buff *)data_sync_bufs[index].
                      skb);
        }
    }

    return ret;
}

int ath6kl_wmi_create_pstream_cmd(struct wmi *wmi, u8 if_idx,
                  struct wmi_create_pstream_cmd *params)
{
    struct sk_buff *skb;
    struct wmi_create_pstream_cmd *cmd;
    u8 fatpipe_exist_for_ac = 0;
    s32 min_phy = 0;
    s32 nominal_phy = 0;
    int ret;

    if (!((params->user_pri < 8) &&
          (params->user_pri <= 0x7) &&
          (up_to_ac[params->user_pri & 0x7] == params->traffic_class) &&
          (params->traffic_direc == UPLINK_TRAFFIC ||
           params->traffic_direc == DNLINK_TRAFFIC ||
           params->traffic_direc == BIDIR_TRAFFIC) &&
          (params->traffic_type == TRAFFIC_TYPE_APERIODIC ||
           params->traffic_type == TRAFFIC_TYPE_PERIODIC) &&
          (params->voice_psc_cap == DISABLE_FOR_THIS_AC ||
           params->voice_psc_cap == ENABLE_FOR_THIS_AC ||
           params->voice_psc_cap == ENABLE_FOR_ALL_AC) &&
          (params->tsid == WMI_IMPLICIT_PSTREAM ||
           params->tsid <= WMI_MAX_THINSTREAM))) {
        return -EINVAL;
    }

    /*
     * Check nominal PHY rate is >= minimalPHY,
     * so that DUT can allow TSRS IE
     */

    /* Get the physical rate (units of bps) */
    min_phy = ((le32_to_cpu(params->min_phy_rate) / 1000) / 1000);

    /* Check minimal phy < nominal phy rate */
    if (params->nominal_phy >= min_phy) {
        /* unit of 500 kbps */
        nominal_phy = (params->nominal_phy * 1000) / 500;
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "TSRS IE enabled::MinPhy %x->NominalPhy ===> %x\n",
               min_phy, nominal_phy);

        params->nominal_phy = nominal_phy;
    } else {
        params->nominal_phy = 0;
    }

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "sending create_pstream_cmd: ac=%d  tsid:%d\n",
           params->traffic_class, params->tsid);

    cmd = (struct wmi_create_pstream_cmd *) skb->data;
    memcpy(cmd, params, sizeof(*cmd));

    /* This is an implicitly created Fat pipe */
    if ((u32) params->tsid == (u32) WMI_IMPLICIT_PSTREAM) {
        spin_lock_bh(&wmi->lock);
        fatpipe_exist_for_ac = (wmi->fat_pipe_exist &
                    (1 << params->traffic_class));
        wmi->fat_pipe_exist |= (1 << params->traffic_class);
        spin_unlock_bh(&wmi->lock);
    } else {
        /* explicitly created thin stream within a fat pipe */
        spin_lock_bh(&wmi->lock);
        fatpipe_exist_for_ac = (wmi->fat_pipe_exist &
                    (1 << params->traffic_class));
        wmi->stream_exist_for_ac[params->traffic_class] |=
            (1 << params->tsid);
        /*
         * If a thinstream becomes active, the fat pipe automatically
         * becomes active
         */
        wmi->fat_pipe_exist |= (1 << params->traffic_class);
        spin_unlock_bh(&wmi->lock);
    }

    /*
     * Indicate activty change to driver layer only if this is the
     * first TSID to get created in this AC explicitly or an implicit
     * fat pipe is getting created.
     */
    if (!fatpipe_exist_for_ac)
        ath6kl_indicate_tx_activity(wmi->parent_dev,
                        params->traffic_class, true);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_CREATE_PSTREAM_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_delete_pstream_cmd(struct wmi *wmi, u8 if_idx, u8 traffic_class,
                  u8 tsid)
{
    struct sk_buff *skb;
    struct wmi_delete_pstream_cmd *cmd;
    u16 active_tsids = 0;
    int ret;

    if (traffic_class > 3) {
        ath6kl_err("invalid traffic class: %d\n", traffic_class);
        return -EINVAL;
    }

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_delete_pstream_cmd *) skb->data;
    cmd->traffic_class = traffic_class;
    cmd->tsid = tsid;

    spin_lock_bh(&wmi->lock);
    active_tsids = wmi->stream_exist_for_ac[traffic_class];
    spin_unlock_bh(&wmi->lock);

    if (!(active_tsids & (1 << tsid))) {
        dev_kfree_skb(skb);
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "TSID %d doesn't exist for traffic class: %d\n",
               tsid, traffic_class);
        return -ENODATA;
    }

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "sending delete_pstream_cmd: traffic class: %d tsid=%d\n",
           traffic_class, tsid);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_DELETE_PSTREAM_CMDID,
                  SYNC_BEFORE_WMIFLAG);

    spin_lock_bh(&wmi->lock);
    wmi->stream_exist_for_ac[traffic_class] &= ~(1 << tsid);
    active_tsids = wmi->stream_exist_for_ac[traffic_class];
    spin_unlock_bh(&wmi->lock);

    /*
     * Indicate stream inactivity to driver layer only if all tsids
     * within this AC are deleted.
     */
    if (!active_tsids) {
        ath6kl_indicate_tx_activity(wmi->parent_dev,
                        traffic_class, false);
        wmi->fat_pipe_exist &= ~(1 << traffic_class);
    }

    return ret;
}

int ath6kl_wmi_set_ip_cmd(struct wmi *wmi, u8 if_idx,
              __be32 ips0, __be32 ips1)
{
    struct sk_buff *skb;
    struct wmi_set_ip_cmd *cmd;
    int ret;

    /* Multicast address are not valid */
    if (ipv4_is_multicast(ips0) ||
        ipv4_is_multicast(ips1))
        return -EINVAL;

    skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_ip_cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_ip_cmd *) skb->data;
    cmd->ips[0] = ips0;
    cmd->ips[1] = ips1;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_IP_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

static void ath6kl_wmi_relinquish_implicit_pstream_credits(struct wmi *wmi)
{
    u16 active_tsids;
    u8 stream_exist;
    int i;

    /*
     * Relinquish credits from all implicitly created pstreams
     * since when we go to sleep. If user created explicit
     * thinstreams exists with in a fatpipe leave them intact
     * for the user to delete.
     */
    spin_lock_bh(&wmi->lock);
    stream_exist = wmi->fat_pipe_exist;
    spin_unlock_bh(&wmi->lock);

    for (i = 0; i < WMM_NUM_AC; i++) {
        if (stream_exist & (1 << i)) {

            /*
             * FIXME: Is this lock & unlock inside
             * for loop correct? may need rework.
             */
            spin_lock_bh(&wmi->lock);
            active_tsids = wmi->stream_exist_for_ac[i];
            spin_unlock_bh(&wmi->lock);

            /*
             * If there are no user created thin streams
             * delete the fatpipe
             */
            if (!active_tsids) {
                stream_exist &= ~(1 << i);
                /*
                 * Indicate inactivity to driver layer for
                 * this fatpipe (pstream)
                 */
                ath6kl_indicate_tx_activity(wmi->parent_dev,
                                i, false);
            }
        }
    }

    /* FIXME: Can we do this assignment without locking ? */
    spin_lock_bh(&wmi->lock);
    wmi->fat_pipe_exist = stream_exist;
    spin_unlock_bh(&wmi->lock);
}

static int ath6kl_set_bitrate_mask64(struct wmi *wmi, u8 if_idx,
                     const struct cfg80211_bitrate_mask *mask)
{
    struct sk_buff *skb;
    int ret, mode, band;
    u64 mcsrate, ratemask[IEEE80211_NUM_BANDS];
    struct wmi_set_tx_select_rates64_cmd *cmd;

    memset(&ratemask, 0, sizeof(ratemask));
    for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
        /* copy legacy rate mask */
        ratemask[band] = mask->control[band].legacy;
        if (band == IEEE80211_BAND_5GHZ)
            ratemask[band] =
                mask->control[band].legacy << 4;

        /* copy mcs rate mask */
        mcsrate = mask->control[band].mcs[1];
        mcsrate <<= 8;
        mcsrate |= mask->control[band].mcs[0];
        ratemask[band] |= mcsrate << 12;
        ratemask[band] |= mcsrate << 28;
    }

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "Ratemask 64 bit: 2.4:%llx 5:%llx\n",
           ratemask[0], ratemask[1]);

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd) * WMI_RATES_MODE_MAX);
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_tx_select_rates64_cmd *) skb->data;
    for (mode = 0; mode < WMI_RATES_MODE_MAX; mode++) {
        /* A mode operate in 5GHZ band */
        if (mode == WMI_RATES_MODE_11A ||
            mode == WMI_RATES_MODE_11A_HT20 ||
            mode == WMI_RATES_MODE_11A_HT40)
            band = IEEE80211_BAND_5GHZ;
        else
            band = IEEE80211_BAND_2GHZ;
        cmd->ratemask[mode] = cpu_to_le64(ratemask[band]);
    }

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb,
                  WMI_SET_TX_SELECT_RATES_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

static int ath6kl_set_bitrate_mask32(struct wmi *wmi, u8 if_idx,
                     const struct cfg80211_bitrate_mask *mask)
{
    struct sk_buff *skb;
    int ret, mode, band;
    u32 mcsrate, ratemask[IEEE80211_NUM_BANDS];
    struct wmi_set_tx_select_rates32_cmd *cmd;

    memset(&ratemask, 0, sizeof(ratemask));
    for (band = 0; band < IEEE80211_NUM_BANDS; band++) {
        /* copy legacy rate mask */
        ratemask[band] = mask->control[band].legacy;
        if (band == IEEE80211_BAND_5GHZ)
            ratemask[band] =
                mask->control[band].legacy << 4;

        /* copy mcs rate mask */
        mcsrate = mask->control[band].mcs[0];
        ratemask[band] |= mcsrate << 12;
        ratemask[band] |= mcsrate << 20;
    }

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "Ratemask 32 bit: 2.4:%x 5:%x\n",
           ratemask[0], ratemask[1]);

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd) * WMI_RATES_MODE_MAX);
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_tx_select_rates32_cmd *) skb->data;
    for (mode = 0; mode < WMI_RATES_MODE_MAX; mode++) {
        /* A mode operate in 5GHZ band */
        if (mode == WMI_RATES_MODE_11A ||
            mode == WMI_RATES_MODE_11A_HT20 ||
            mode == WMI_RATES_MODE_11A_HT40)
            band = IEEE80211_BAND_5GHZ;
        else
            band = IEEE80211_BAND_2GHZ;
        cmd->ratemask[mode] = cpu_to_le32(ratemask[band]);
    }

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb,
                  WMI_SET_TX_SELECT_RATES_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_set_bitrate_mask(struct wmi *wmi, u8 if_idx,
                const struct cfg80211_bitrate_mask *mask)
{
    struct ath6kl *ar = wmi->parent_dev;

    if (ar->hw.flags & ATH6KL_HW_FLAG_64BIT_RATES)
        return ath6kl_set_bitrate_mask64(wmi, if_idx, mask);
    else
        return ath6kl_set_bitrate_mask32(wmi, if_idx, mask);
}

int ath6kl_wmi_set_host_sleep_mode_cmd(struct wmi *wmi, u8 if_idx,
                       enum ath6kl_host_mode host_mode)
{
    struct sk_buff *skb;
    struct wmi_set_host_sleep_mode_cmd *cmd;
    int ret;

    if ((host_mode != ATH6KL_HOST_MODE_ASLEEP) &&
        (host_mode != ATH6KL_HOST_MODE_AWAKE)) {
        ath6kl_err("invalid host sleep mode: %d\n", host_mode);
        return -EINVAL;
    }

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_host_sleep_mode_cmd *) skb->data;

    if (host_mode == ATH6KL_HOST_MODE_ASLEEP) {
        ath6kl_wmi_relinquish_implicit_pstream_credits(wmi);
        cmd->asleep = cpu_to_le32(1);
    } else
        cmd->awake = cpu_to_le32(1);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb,
                  WMI_SET_HOST_SLEEP_MODE_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

/* This command has zero length payload */
static int ath6kl_wmi_host_sleep_mode_cmd_prcd_evt_rx(struct wmi *wmi,
                              struct ath6kl_vif *vif)
{
    struct ath6kl *ar = wmi->parent_dev;

    set_bit(HOST_SLEEP_MODE_CMD_PROCESSED, &vif->flags);
    wake_up(&ar->event_wq);

    return 0;
}

int ath6kl_wmi_set_wow_mode_cmd(struct wmi *wmi, u8 if_idx,
                enum ath6kl_wow_mode wow_mode,
                u32 filter, u16 host_req_delay)
{
    struct sk_buff *skb;
    struct wmi_set_wow_mode_cmd *cmd;
    int ret;

    if ((wow_mode != ATH6KL_WOW_MODE_ENABLE) &&
        wow_mode != ATH6KL_WOW_MODE_DISABLE) {
        ath6kl_err("invalid wow mode: %d\n", wow_mode);
        return -EINVAL;
    }

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_wow_mode_cmd *) skb->data;
    cmd->enable_wow = cpu_to_le32(wow_mode);
    cmd->filter = cpu_to_le32(filter);
    cmd->host_req_delay = cpu_to_le16(host_req_delay);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_WOW_MODE_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_add_wow_pattern_cmd(struct wmi *wmi, u8 if_idx,
                   u8 list_id, u8 filter_size,
                   u8 filter_offset, const u8 *filter,
                   const u8 *mask)
{
    struct sk_buff *skb;
    struct wmi_add_wow_pattern_cmd *cmd;
    u16 size;
    u8 *filter_mask;
    int ret;

    /*
     * Allocate additional memory in the buffer to hold
     * filter and mask value, which is twice of filter_size.
     */
    size = sizeof(*cmd) + (2 * filter_size);

    skb = ath6kl_wmi_get_new_buf(size);
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_add_wow_pattern_cmd *) skb->data;
    cmd->filter_list_id = list_id;
    cmd->filter_size = filter_size;
    cmd->filter_offset = filter_offset;

    memcpy(cmd->filter, filter, filter_size);

    filter_mask = (u8 *) (cmd->filter + filter_size);
    memcpy(filter_mask, mask, filter_size);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_ADD_WOW_PATTERN_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_del_wow_pattern_cmd(struct wmi *wmi, u8 if_idx,
                   u16 list_id, u16 filter_id)
{
    struct sk_buff *skb;
    struct wmi_del_wow_pattern_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_del_wow_pattern_cmd *) skb->data;
    cmd->filter_list_id = cpu_to_le16(list_id);
    cmd->filter_id = cpu_to_le16(filter_id);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_DEL_WOW_PATTERN_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

static int ath6kl_wmi_cmd_send_xtnd(struct wmi *wmi, struct sk_buff *skb,
                    enum wmix_command_id cmd_id,
                    enum wmi_sync_flag sync_flag)
{
    struct wmix_cmd_hdr *cmd_hdr;
    int ret;

    skb_push(skb, sizeof(struct wmix_cmd_hdr));

    cmd_hdr = (struct wmix_cmd_hdr *) skb->data;
    cmd_hdr->cmd_id = cpu_to_le32(cmd_id);

    ret = ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_EXTENSION_CMDID, sync_flag);

    return ret;
}

int ath6kl_wmi_get_challenge_resp_cmd(struct wmi *wmi, u32 cookie, u32 source)
{
    struct sk_buff *skb;
    struct wmix_hb_challenge_resp_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmix_hb_challenge_resp_cmd *) skb->data;
    cmd->cookie = cpu_to_le32(cookie);
    cmd->source = cpu_to_le32(source);

    ret = ath6kl_wmi_cmd_send_xtnd(wmi, skb, WMIX_HB_CHALLENGE_RESP_CMDID,
                       NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_config_debug_module_cmd(struct wmi *wmi, u32 valid, u32 config)
{
    struct ath6kl_wmix_dbglog_cfg_module_cmd *cmd;
    struct sk_buff *skb;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct ath6kl_wmix_dbglog_cfg_module_cmd *) skb->data;
    cmd->valid = cpu_to_le32(valid);
    cmd->config = cpu_to_le32(config);

    ret = ath6kl_wmi_cmd_send_xtnd(wmi, skb, WMIX_DBGLOG_CFG_MODULE_CMDID,
                       NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_get_stats_cmd(struct wmi *wmi, u8 if_idx)
{
    return ath6kl_wmi_simple_cmd(wmi, if_idx, WMI_GET_STATISTICS_CMDID);
}

int ath6kl_wmi_set_tx_pwr_cmd(struct wmi *wmi, u8 if_idx, u8 dbM)
{
    struct sk_buff *skb;
    struct wmi_set_tx_pwr_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_tx_pwr_cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_tx_pwr_cmd *) skb->data;
    cmd->dbM = dbM;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_TX_PWR_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_get_tx_pwr_cmd(struct wmi *wmi, u8 if_idx)
{
    return ath6kl_wmi_simple_cmd(wmi, if_idx, WMI_GET_TX_PWR_CMDID);
}

int ath6kl_wmi_get_roam_tbl_cmd(struct wmi *wmi)
{
    return ath6kl_wmi_simple_cmd(wmi, 0, WMI_GET_ROAM_TBL_CMDID);
}

int ath6kl_wmi_set_lpreamble_cmd(struct wmi *wmi, u8 if_idx, u8 status,
                 u8 preamble_policy)
{
    struct sk_buff *skb;
    struct wmi_set_lpreamble_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_lpreamble_cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_lpreamble_cmd *) skb->data;
    cmd->status = status;
    cmd->preamble_policy = preamble_policy;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_LPREAMBLE_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_set_rts_cmd(struct wmi *wmi, u16 threshold)
{
    struct sk_buff *skb;
    struct wmi_set_rts_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_rts_cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_rts_cmd *) skb->data;
    cmd->threshold = cpu_to_le16(threshold);

    ret = ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_SET_RTS_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_set_wmm_txop(struct wmi *wmi, u8 if_idx, enum wmi_txop_cfg cfg)
{
    struct sk_buff *skb;
    struct wmi_set_wmm_txop_cmd *cmd;
    int ret;

    if (!((cfg == WMI_TXOP_DISABLED) || (cfg == WMI_TXOP_ENABLED)))
        return -EINVAL;

    skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_set_wmm_txop_cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_wmm_txop_cmd *) skb->data;
    cmd->txop_enable = cfg;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_WMM_TXOP_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_set_keepalive_cmd(struct wmi *wmi, u8 if_idx,
                 u8 keep_alive_intvl)
{
    struct sk_buff *skb;
    struct wmi_set_keepalive_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_keepalive_cmd *) skb->data;
    cmd->keep_alive_intvl = keep_alive_intvl;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_KEEPALIVE_CMDID,
                  NO_SYNC_WMIFLAG);

    if (ret == 0)
        ath6kl_debug_set_keepalive(wmi->parent_dev, keep_alive_intvl);

    return ret;
}

int ath6kl_wmi_set_htcap_cmd(struct wmi *wmi, u8 if_idx,
                 enum ieee80211_band band,
                 struct ath6kl_htcap *htcap)
{
    struct sk_buff *skb;
    struct wmi_set_htcap_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_htcap_cmd *) skb->data;

    /*
     * NOTE: Band in firmware matches enum ieee80211_band, it is unlikely
     * this will be changed in firmware. If at all there is any change in
     * band value, the host needs to be fixed.
     */
    cmd->band = band;
    cmd->ht_enable = !!htcap->ht_enable;
    cmd->ht20_sgi = !!(htcap->cap_info & IEEE80211_HT_CAP_SGI_20);
    cmd->ht40_supported =
        !!(htcap->cap_info & IEEE80211_HT_CAP_SUP_WIDTH_20_40);
    cmd->ht40_sgi = !!(htcap->cap_info & IEEE80211_HT_CAP_SGI_40);
    cmd->intolerant_40mhz =
        !!(htcap->cap_info & IEEE80211_HT_CAP_40MHZ_INTOLERANT);
    cmd->max_ampdu_len_exp = htcap->ampdu_factor;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "Set htcap: band:%d ht_enable:%d 40mhz:%d sgi_20mhz:%d sgi_40mhz:%d 40mhz_intolerant:%d ampdu_len_exp:%d\n",
           cmd->band, cmd->ht_enable, cmd->ht40_supported,
           cmd->ht20_sgi, cmd->ht40_sgi, cmd->intolerant_40mhz,
           cmd->max_ampdu_len_exp);
    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_HT_CAP_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_test_cmd(struct wmi *wmi, void *buf, size_t len)
{
    struct sk_buff *skb;
    int ret;

    skb = ath6kl_wmi_get_new_buf(len);
    if (!skb)
        return -ENOMEM;

    memcpy(skb->data, buf, len);

    ret = ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_TEST_CMDID, NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_mcast_filter_cmd(struct wmi *wmi, u8 if_idx, bool mc_all_on)
{
    struct sk_buff *skb;
    struct wmi_mcast_filter_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_mcast_filter_cmd *) skb->data;
    cmd->mcast_all_enable = mc_all_on;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_MCAST_FILTER_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

int ath6kl_wmi_add_del_mcast_filter_cmd(struct wmi *wmi, u8 if_idx,
                    u8 *filter, bool add_filter)
{
    struct sk_buff *skb;
    struct wmi_mcast_filter_add_del_cmd *cmd;
    int ret;

    if ((filter[0] != 0x33 || filter[1] != 0x33) &&
        (filter[0] != 0x01 || filter[1] != 0x00 ||
        filter[2] != 0x5e || filter[3] > 0x7f)) {
        ath6kl_warn("invalid multicast filter address\n");
        return -EINVAL;
    }

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_mcast_filter_add_del_cmd *) skb->data;
    memcpy(cmd->mcast_mac, filter, ATH6KL_MCAST_FILTER_MAC_ADDR_SIZE);
    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb,
                  add_filter ? WMI_SET_MCAST_FILTER_CMDID :
                  WMI_DEL_MCAST_FILTER_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_sta_bmiss_enhance_cmd(struct wmi *wmi, u8 if_idx, bool enhance)
{
    struct sk_buff *skb;
    struct wmi_sta_bmiss_enhance_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_sta_bmiss_enhance_cmd *) skb->data;
    cmd->enable = enhance ? 1 : 0;

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb,
                  WMI_STA_BMISS_ENHANCE_CMDID,
                  NO_SYNC_WMIFLAG);
    return ret;
}

s32 ath6kl_wmi_get_rate(s8 rate_index)
{
    if (rate_index == RATE_AUTO)
        return 0;

    return wmi_rate_tbl[(u32) rate_index][0];
}

static int ath6kl_wmi_get_pmkid_list_event_rx(struct wmi *wmi, u8 *datap,
                          u32 len)
{
    struct wmi_pmkid_list_reply *reply;
    u32 expected_len;

    if (len < sizeof(struct wmi_pmkid_list_reply))
        return -EINVAL;

    reply = (struct wmi_pmkid_list_reply *)datap;
    expected_len = sizeof(reply->num_pmkid) +
        le32_to_cpu(reply->num_pmkid) * WMI_PMKID_LEN;

    if (len < expected_len)
        return -EINVAL;

    return 0;
}

static int ath6kl_wmi_addba_req_event_rx(struct wmi *wmi, u8 *datap, int len,
                     struct ath6kl_vif *vif)
{
    struct wmi_addba_req_event *cmd = (struct wmi_addba_req_event *) datap;

    aggr_recv_addba_req_evt(vif, cmd->tid,
                le16_to_cpu(cmd->st_seq_no), cmd->win_sz);

    return 0;
}

static int ath6kl_wmi_delba_req_event_rx(struct wmi *wmi, u8 *datap, int len,
                     struct ath6kl_vif *vif)
{
    struct wmi_delba_event *cmd = (struct wmi_delba_event *) datap;

    aggr_recv_delba_req_evt(vif, cmd->tid);

    return 0;
}

/*  AP mode functions */

int ath6kl_wmi_ap_profile_commit(struct wmi *wmip, u8 if_idx,
                 struct wmi_connect_cmd *p)
{
    struct sk_buff *skb;
    struct wmi_connect_cmd *cm;
    int res;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cm));
    if (!skb)
        return -ENOMEM;

    cm = (struct wmi_connect_cmd *) skb->data;
    memcpy(cm, p, sizeof(*cm));

    res = ath6kl_wmi_cmd_send(wmip, if_idx, skb, WMI_AP_CONFIG_COMMIT_CMDID,
                  NO_SYNC_WMIFLAG);
    ath6kl_dbg(ATH6KL_DBG_WMI,
           "%s: nw_type=%u auth_mode=%u ch=%u ctrl_flags=0x%x-> res=%d\n",
           __func__, p->nw_type, p->auth_mode, le16_to_cpu(p->ch),
           le32_to_cpu(p->ctrl_flags), res);
    return res;
}

int ath6kl_wmi_ap_set_mlme(struct wmi *wmip, u8 if_idx, u8 cmd, const u8 *mac,
               u16 reason)
{
    struct sk_buff *skb;
    struct wmi_ap_set_mlme_cmd *cm;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cm));
    if (!skb)
        return -ENOMEM;

    cm = (struct wmi_ap_set_mlme_cmd *) skb->data;
    memcpy(cm->mac, mac, ETH_ALEN);
    cm->reason = cpu_to_le16(reason);
    cm->cmd = cmd;

    ath6kl_dbg(ATH6KL_DBG_WMI, "ap_set_mlme: cmd=%d reason=%d\n", cm->cmd,
           cm->reason);

    return ath6kl_wmi_cmd_send(wmip, if_idx, skb, WMI_AP_SET_MLME_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_ap_hidden_ssid(struct wmi *wmi, u8 if_idx, bool enable)
{
    struct sk_buff *skb;
    struct wmi_ap_hidden_ssid_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_ap_hidden_ssid_cmd *) skb->data;
    cmd->hidden_ssid = enable ? 1 : 0;

    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_AP_HIDDEN_SSID_CMDID,
                   NO_SYNC_WMIFLAG);
}

/* This command will be used to enable/disable AP uAPSD feature */
int ath6kl_wmi_ap_set_apsd(struct wmi *wmi, u8 if_idx, u8 enable)
{
    struct wmi_ap_set_apsd_cmd *cmd;
    struct sk_buff *skb;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_ap_set_apsd_cmd *)skb->data;
    cmd->enable = enable;

    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_AP_SET_APSD_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_set_apsd_bfrd_traf(struct wmi *wmi, u8 if_idx,
                         u16 aid, u16 bitmap, u32 flags)
{
    struct wmi_ap_apsd_buffered_traffic_cmd *cmd;
    struct sk_buff *skb;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_ap_apsd_buffered_traffic_cmd *)skb->data;
    cmd->aid = cpu_to_le16(aid);
    cmd->bitmap = cpu_to_le16(bitmap);
    cmd->flags = cpu_to_le32(flags);

    return ath6kl_wmi_cmd_send(wmi, if_idx, skb,
                   WMI_AP_APSD_BUFFERED_TRAFFIC_CMDID,
                   NO_SYNC_WMIFLAG);
}

static int ath6kl_wmi_pspoll_event_rx(struct wmi *wmi, u8 *datap, int len,
                      struct ath6kl_vif *vif)
{
    struct wmi_pspoll_event *ev;

    if (len < sizeof(struct wmi_pspoll_event))
        return -EINVAL;

    ev = (struct wmi_pspoll_event *) datap;

    ath6kl_pspoll_event(vif, le16_to_cpu(ev->aid));

    return 0;
}

static int ath6kl_wmi_dtimexpiry_event_rx(struct wmi *wmi, u8 *datap, int len,
                      struct ath6kl_vif *vif)
{
    ath6kl_dtimexpiry_event(vif);

    return 0;
}

int ath6kl_wmi_set_pvb_cmd(struct wmi *wmi, u8 if_idx, u16 aid,
               bool flag)
{
    struct sk_buff *skb;
    struct wmi_ap_set_pvb_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(struct wmi_ap_set_pvb_cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_ap_set_pvb_cmd *) skb->data;
    cmd->aid = cpu_to_le16(aid);
    cmd->rsvd = cpu_to_le16(0);
    cmd->flag = cpu_to_le32(flag);

    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_AP_SET_PVB_CMDID,
                  NO_SYNC_WMIFLAG);

    return 0;
}

int ath6kl_wmi_set_rx_frame_format_cmd(struct wmi *wmi, u8 if_idx,
                       u8 rx_meta_ver,
                       bool rx_dot11_hdr, bool defrag_on_host)
{
    struct sk_buff *skb;
    struct wmi_rx_frame_format_cmd *cmd;
    int ret;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_rx_frame_format_cmd *) skb->data;
    cmd->dot11_hdr = rx_dot11_hdr ? 1 : 0;
    cmd->defrag_on_host = defrag_on_host ? 1 : 0;
    cmd->meta_ver = rx_meta_ver;

    /* Delete the local aggr state, on host */
    ret = ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_RX_FRAME_FORMAT_CMDID,
                  NO_SYNC_WMIFLAG);

    return ret;
}

int ath6kl_wmi_set_appie_cmd(struct wmi *wmi, u8 if_idx, u8 mgmt_frm_type,
                 const u8 *ie, u8 ie_len)
{
    struct sk_buff *skb;
    struct wmi_set_appie_cmd *p;

    skb = ath6kl_wmi_get_new_buf(sizeof(*p) + ie_len);
    if (!skb)
        return -ENOMEM;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "set_appie_cmd: mgmt_frm_type=%u ie_len=%u\n",
           mgmt_frm_type, ie_len);
    p = (struct wmi_set_appie_cmd *) skb->data;
    p->mgmt_frm_type = mgmt_frm_type;
    p->ie_len = ie_len;

    if (ie != NULL && ie_len > 0)
        memcpy(p->ie_info, ie, ie_len);

    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_APPIE_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_set_ie_cmd(struct wmi *wmi, u8 if_idx, u8 ie_id, u8 ie_field,
              const u8 *ie_info, u8 ie_len)
{
    struct sk_buff *skb;
    struct wmi_set_ie_cmd *p;

    skb = ath6kl_wmi_get_new_buf(sizeof(*p) + ie_len);
    if (!skb)
        return -ENOMEM;

    ath6kl_dbg(ATH6KL_DBG_WMI, "set_ie_cmd: ie_id=%u ie_ie_field=%u ie_len=%u\n",
           ie_id, ie_field, ie_len);
    p = (struct wmi_set_ie_cmd *) skb->data;
    p->ie_id = ie_id;
    p->ie_field = ie_field;
    p->ie_len = ie_len;
    if (ie_info && ie_len > 0)
        memcpy(p->ie_info, ie_info, ie_len);

    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SET_IE_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_disable_11b_rates_cmd(struct wmi *wmi, bool disable)
{
    struct sk_buff *skb;
    struct wmi_disable_11b_rates_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    ath6kl_dbg(ATH6KL_DBG_WMI, "disable_11b_rates_cmd: disable=%u\n",
           disable);
    cmd = (struct wmi_disable_11b_rates_cmd *) skb->data;
    cmd->disable = disable ? 1 : 0;

    return ath6kl_wmi_cmd_send(wmi, 0, skb, WMI_DISABLE_11B_RATES_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_remain_on_chnl_cmd(struct wmi *wmi, u8 if_idx, u32 freq, u32 dur)
{
    struct sk_buff *skb;
    struct wmi_remain_on_chnl_cmd *p;

    skb = ath6kl_wmi_get_new_buf(sizeof(*p));
    if (!skb)
        return -ENOMEM;

    ath6kl_dbg(ATH6KL_DBG_WMI, "remain_on_chnl_cmd: freq=%u dur=%u\n",
           freq, dur);
    p = (struct wmi_remain_on_chnl_cmd *) skb->data;
    p->freq = cpu_to_le32(freq);
    p->duration = cpu_to_le32(dur);
    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_REMAIN_ON_CHNL_CMDID,
                   NO_SYNC_WMIFLAG);
}

/* ath6kl_wmi_send_action_cmd is to be deprecated. Use
 * ath6kl_wmi_send_mgmt_cmd instead. The new function supports P2P
 * mgmt operations using station interface.
 */
static int ath6kl_wmi_send_action_cmd(struct wmi *wmi, u8 if_idx, u32 id,
                      u32 freq, u32 wait, const u8 *data,
                      u16 data_len)
{
    struct sk_buff *skb;
    struct wmi_send_action_cmd *p;
    u8 *buf;

    if (wait)
        return -EINVAL; /* Offload for wait not supported */

    buf = kmalloc(data_len, GFP_KERNEL);
    if (!buf)
        return -ENOMEM;

    skb = ath6kl_wmi_get_new_buf(sizeof(*p) + data_len);
    if (!skb) {
        kfree(buf);
        return -ENOMEM;
    }

    kfree(wmi->last_mgmt_tx_frame);
    memcpy(buf, data, data_len);
    wmi->last_mgmt_tx_frame = buf;
    wmi->last_mgmt_tx_frame_len = data_len;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "send_action_cmd: id=%u freq=%u wait=%u len=%u\n",
           id, freq, wait, data_len);
    p = (struct wmi_send_action_cmd *) skb->data;
    p->id = cpu_to_le32(id);
    p->freq = cpu_to_le32(freq);
    p->wait = cpu_to_le32(wait);
    p->len = cpu_to_le16(data_len);
    memcpy(p->data, data, data_len);
    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SEND_ACTION_CMDID,
                   NO_SYNC_WMIFLAG);
}

static int __ath6kl_wmi_send_mgmt_cmd(struct wmi *wmi, u8 if_idx, u32 id,
                      u32 freq, u32 wait, const u8 *data,
                      u16 data_len, u32 no_cck)
{
    struct sk_buff *skb;
    struct wmi_send_mgmt_cmd *p;
    u8 *buf;

    if (wait)
        return -EINVAL; /* Offload for wait not supported */

    buf = kmalloc(data_len, GFP_KERNEL);
    if (!buf)
        return -ENOMEM;

    skb = ath6kl_wmi_get_new_buf(sizeof(*p) + data_len);
    if (!skb) {
        kfree(buf);
        return -ENOMEM;
    }

    kfree(wmi->last_mgmt_tx_frame);
    memcpy(buf, data, data_len);
    wmi->last_mgmt_tx_frame = buf;
    wmi->last_mgmt_tx_frame_len = data_len;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "send_action_cmd: id=%u freq=%u wait=%u len=%u\n",
           id, freq, wait, data_len);
    p = (struct wmi_send_mgmt_cmd *) skb->data;
    p->id = cpu_to_le32(id);
    p->freq = cpu_to_le32(freq);
    p->wait = cpu_to_le32(wait);
    p->no_cck = cpu_to_le32(no_cck);
    p->len = cpu_to_le16(data_len);
    memcpy(p->data, data, data_len);
    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_SEND_MGMT_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_send_mgmt_cmd(struct wmi *wmi, u8 if_idx, u32 id, u32 freq,
                u32 wait, const u8 *data, u16 data_len,
                u32 no_cck)
{
    int status;
    struct ath6kl *ar = wmi->parent_dev;

    if (test_bit(ATH6KL_FW_CAPABILITY_STA_P2PDEV_DUPLEX,
             ar->fw_capabilities)) {
        /*
         * If capable of doing P2P mgmt operations using
         * station interface, send additional information like
         * supported rates to advertise and xmit rates for
         * probe requests
         */
        status = __ath6kl_wmi_send_mgmt_cmd(ar->wmi, if_idx, id, freq,
                            wait, data, data_len,
                            no_cck);
    } else {
        status = ath6kl_wmi_send_action_cmd(ar->wmi, if_idx, id, freq,
                            wait, data, data_len);
    }

    return status;
}

int ath6kl_wmi_send_probe_response_cmd(struct wmi *wmi, u8 if_idx, u32 freq,
                       const u8 *dst, const u8 *data,
                       u16 data_len)
{
    struct sk_buff *skb;
    struct wmi_p2p_probe_response_cmd *p;
    size_t cmd_len = sizeof(*p) + data_len;

    if (data_len == 0)
        cmd_len++; /* work around target minimum length requirement */

    skb = ath6kl_wmi_get_new_buf(cmd_len);
    if (!skb)
        return -ENOMEM;

    ath6kl_dbg(ATH6KL_DBG_WMI,
           "send_probe_response_cmd: freq=%u dst=%pM len=%u\n",
           freq, dst, data_len);
    p = (struct wmi_p2p_probe_response_cmd *) skb->data;
    p->freq = cpu_to_le32(freq);
    memcpy(p->destination_addr, dst, ETH_ALEN);
    p->len = cpu_to_le16(data_len);
    memcpy(p->data, data, data_len);
    return ath6kl_wmi_cmd_send(wmi, if_idx, skb,
                   WMI_SEND_PROBE_RESPONSE_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_probe_report_req_cmd(struct wmi *wmi, u8 if_idx, bool enable)
{
    struct sk_buff *skb;
    struct wmi_probe_req_report_cmd *p;

    skb = ath6kl_wmi_get_new_buf(sizeof(*p));
    if (!skb)
        return -ENOMEM;

    ath6kl_dbg(ATH6KL_DBG_WMI, "probe_report_req_cmd: enable=%u\n",
           enable);
    p = (struct wmi_probe_req_report_cmd *) skb->data;
    p->enable = enable ? 1 : 0;
    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_PROBE_REQ_REPORT_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_info_req_cmd(struct wmi *wmi, u8 if_idx, u32 info_req_flags)
{
    struct sk_buff *skb;
    struct wmi_get_p2p_info *p;

    skb = ath6kl_wmi_get_new_buf(sizeof(*p));
    if (!skb)
        return -ENOMEM;

    ath6kl_dbg(ATH6KL_DBG_WMI, "info_req_cmd: flags=%x\n",
           info_req_flags);
    p = (struct wmi_get_p2p_info *) skb->data;
    p->info_req_flags = cpu_to_le32(info_req_flags);
    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_GET_P2P_INFO_CMDID,
                   NO_SYNC_WMIFLAG);
}

int ath6kl_wmi_cancel_remain_on_chnl_cmd(struct wmi *wmi, u8 if_idx)
{
    ath6kl_dbg(ATH6KL_DBG_WMI, "cancel_remain_on_chnl_cmd\n");
    return ath6kl_wmi_simple_cmd(wmi, if_idx,
                     WMI_CANCEL_REMAIN_ON_CHNL_CMDID);
}

int ath6kl_wmi_set_inact_period(struct wmi *wmi, u8 if_idx, int inact_timeout)
{
    struct sk_buff *skb;
    struct wmi_set_inact_period_cmd *cmd;

    skb = ath6kl_wmi_get_new_buf(sizeof(*cmd));
    if (!skb)
        return -ENOMEM;

    cmd = (struct wmi_set_inact_period_cmd *) skb->data;
    cmd->inact_period = cpu_to_le32(inact_timeout);
    cmd->num_null_func = 0;

    return ath6kl_wmi_cmd_send(wmi, if_idx, skb, WMI_AP_CONN_INACT_CMDID,
                   NO_SYNC_WMIFLAG);
}

static int ath6kl_wmi_control_rx_xtnd(struct wmi *wmi, struct sk_buff *skb)
{
    struct wmix_cmd_hdr *cmd;
    u32 len;
    u16 id;
    u8 *datap;
    int ret = 0;

    if (skb->len < sizeof(struct wmix_cmd_hdr)) {
        ath6kl_err("bad packet 1\n");
        return -EINVAL;
    }

    cmd = (struct wmix_cmd_hdr *) skb->data;
    id = le32_to_cpu(cmd->cmd_id);

    skb_pull(skb, sizeof(struct wmix_cmd_hdr));

    datap = skb->data;
    len = skb->len;

    switch (id) {
    case WMIX_HB_CHALLENGE_RESP_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "wmi event hb challenge resp\n");
        break;
    case WMIX_DBGLOG_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "wmi event dbglog len %d\n", len);
        ath6kl_debug_fwlog_event(wmi->parent_dev, datap, len);
        break;
    default:
        ath6kl_warn("unknown cmd id 0x%x\n", id);
        ret = -EINVAL;
        break;
    }

    return ret;
}

static int ath6kl_wmi_roam_tbl_event_rx(struct wmi *wmi, u8 *datap, int len)
{
    return ath6kl_debug_roam_tbl_event(wmi->parent_dev, datap, len);
}

/* Process interface specific wmi events, caller would free the datap */
static int ath6kl_wmi_proc_events_vif(struct wmi *wmi, u16 if_idx, u16 cmd_id,
                    u8 *datap, u32 len)
{
    struct ath6kl_vif *vif;

    vif = ath6kl_get_vif_by_index(wmi->parent_dev, if_idx);
    if (!vif) {
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "Wmi event for unavailable vif, vif_index:%d\n",
                if_idx);
        return -EINVAL;
    }

    switch (cmd_id) {
    case WMI_CONNECT_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_CONNECT_EVENTID\n");
        return ath6kl_wmi_connect_event_rx(wmi, datap, len, vif);
    case WMI_DISCONNECT_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_DISCONNECT_EVENTID\n");
        return ath6kl_wmi_disconnect_event_rx(wmi, datap, len, vif);
    case WMI_TKIP_MICERR_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TKIP_MICERR_EVENTID\n");
        return ath6kl_wmi_tkip_micerr_event_rx(wmi, datap, len, vif);
    case WMI_BSSINFO_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_BSSINFO_EVENTID\n");
        return ath6kl_wmi_bssinfo_event_rx(wmi, datap, len, vif);
    case WMI_NEIGHBOR_REPORT_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_NEIGHBOR_REPORT_EVENTID\n");
        return ath6kl_wmi_neighbor_report_event_rx(wmi, datap, len,
                               vif);
    case WMI_SCAN_COMPLETE_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_SCAN_COMPLETE_EVENTID\n");
        return ath6kl_wmi_scan_complete_rx(wmi, datap, len, vif);
    case WMI_REPORT_STATISTICS_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REPORT_STATISTICS_EVENTID\n");
        return ath6kl_wmi_stats_event_rx(wmi, datap, len, vif);
    case WMI_CAC_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_CAC_EVENTID\n");
        return ath6kl_wmi_cac_event_rx(wmi, datap, len, vif);
    case WMI_PSPOLL_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_PSPOLL_EVENTID\n");
        return ath6kl_wmi_pspoll_event_rx(wmi, datap, len, vif);
    case WMI_DTIMEXPIRY_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_DTIMEXPIRY_EVENTID\n");
        return ath6kl_wmi_dtimexpiry_event_rx(wmi, datap, len, vif);
    case WMI_ADDBA_REQ_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_ADDBA_REQ_EVENTID\n");
        return ath6kl_wmi_addba_req_event_rx(wmi, datap, len, vif);
    case WMI_DELBA_REQ_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_DELBA_REQ_EVENTID\n");
        return ath6kl_wmi_delba_req_event_rx(wmi, datap, len, vif);
    case WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "WMI_SET_HOST_SLEEP_MODE_CMD_PROCESSED_EVENTID");
        return ath6kl_wmi_host_sleep_mode_cmd_prcd_evt_rx(wmi, vif);
    case WMI_REMAIN_ON_CHNL_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REMAIN_ON_CHNL_EVENTID\n");
        return ath6kl_wmi_remain_on_chnl_event_rx(wmi, datap, len, vif);
    case WMI_CANCEL_REMAIN_ON_CHNL_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "WMI_CANCEL_REMAIN_ON_CHNL_EVENTID\n");
        return ath6kl_wmi_cancel_remain_on_chnl_event_rx(wmi, datap,
                                 len, vif);
    case WMI_TX_STATUS_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TX_STATUS_EVENTID\n");
        return ath6kl_wmi_tx_status_event_rx(wmi, datap, len, vif);
    case WMI_RX_PROBE_REQ_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_RX_PROBE_REQ_EVENTID\n");
        return ath6kl_wmi_rx_probe_req_event_rx(wmi, datap, len, vif);
    case WMI_RX_ACTION_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_RX_ACTION_EVENTID\n");
        return ath6kl_wmi_rx_action_event_rx(wmi, datap, len, vif);
    default:
        ath6kl_dbg(ATH6KL_DBG_WMI, "unknown cmd id 0x%x\n", cmd_id);
        return -EINVAL;
    }

    return 0;
}

static int ath6kl_wmi_proc_events(struct wmi *wmi, struct sk_buff *skb)
{
    struct wmi_cmd_hdr *cmd;
    int ret = 0;
    u32 len;
    u16 id;
    u8 if_idx;
    u8 *datap;

    cmd = (struct wmi_cmd_hdr *) skb->data;
    id = le16_to_cpu(cmd->cmd_id);
    if_idx = le16_to_cpu(cmd->info1) & WMI_CMD_HDR_IF_ID_MASK;

    skb_pull(skb, sizeof(struct wmi_cmd_hdr));
    datap = skb->data;
    len = skb->len;

    ath6kl_dbg(ATH6KL_DBG_WMI, "wmi rx id %d len %d\n", id, len);
    ath6kl_dbg_dump(ATH6KL_DBG_WMI_DUMP, NULL, "wmi rx ",
            datap, len);

    switch (id) {
    case WMI_GET_BITRATE_CMDID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_BITRATE_CMDID\n");
        ret = ath6kl_wmi_bitrate_reply_rx(wmi, datap, len);
        break;
    case WMI_GET_CHANNEL_LIST_CMDID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_CHANNEL_LIST_CMDID\n");
        ret = ath6kl_wmi_ch_list_reply_rx(wmi, datap, len);
        break;
    case WMI_GET_TX_PWR_CMDID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_TX_PWR_CMDID\n");
        ret = ath6kl_wmi_tx_pwr_reply_rx(wmi, datap, len);
        break;
    case WMI_READY_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_READY_EVENTID\n");
        ret = ath6kl_wmi_ready_event_rx(wmi, datap, len);
        break;
    case WMI_PEER_NODE_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_PEER_NODE_EVENTID\n");
        ret = ath6kl_wmi_peer_node_event_rx(wmi, datap, len);
        break;
    case WMI_REGDOMAIN_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REGDOMAIN_EVENTID\n");
        ath6kl_wmi_regdomain_event(wmi, datap, len);
        break;
    case WMI_PSTREAM_TIMEOUT_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_PSTREAM_TIMEOUT_EVENTID\n");
        ret = ath6kl_wmi_pstream_timeout_event_rx(wmi, datap, len);
        break;
    case WMI_CMDERROR_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_CMDERROR_EVENTID\n");
        ret = ath6kl_wmi_error_event_rx(wmi, datap, len);
        break;
    case WMI_RSSI_THRESHOLD_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_RSSI_THRESHOLD_EVENTID\n");
        ret = ath6kl_wmi_rssi_threshold_event_rx(wmi, datap, len);
        break;
    case WMI_ERROR_REPORT_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_ERROR_REPORT_EVENTID\n");
        break;
    case WMI_OPT_RX_FRAME_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_OPT_RX_FRAME_EVENTID\n");
        /* this event has been deprecated */
        break;
    case WMI_REPORT_ROAM_TBL_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REPORT_ROAM_TBL_EVENTID\n");
        ret = ath6kl_wmi_roam_tbl_event_rx(wmi, datap, len);
        break;
    case WMI_EXTENSION_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_EXTENSION_EVENTID\n");
        ret = ath6kl_wmi_control_rx_xtnd(wmi, skb);
        break;
    case WMI_CHANNEL_CHANGE_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_CHANNEL_CHANGE_EVENTID\n");
        break;
    case WMI_REPORT_ROAM_DATA_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_REPORT_ROAM_DATA_EVENTID\n");
        break;
    case WMI_TEST_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TEST_EVENTID\n");
        ret = ath6kl_wmi_test_rx(wmi, datap, len);
        break;
    case WMI_GET_FIXRATES_CMDID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_FIXRATES_CMDID\n");
        ret = ath6kl_wmi_ratemask_reply_rx(wmi, datap, len);
        break;
    case WMI_TX_RETRY_ERR_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TX_RETRY_ERR_EVENTID\n");
        break;
    case WMI_SNR_THRESHOLD_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_SNR_THRESHOLD_EVENTID\n");
        ret = ath6kl_wmi_snr_threshold_event_rx(wmi, datap, len);
        break;
    case WMI_LQ_THRESHOLD_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_LQ_THRESHOLD_EVENTID\n");
        break;
    case WMI_APLIST_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_APLIST_EVENTID\n");
        ret = ath6kl_wmi_aplist_event_rx(wmi, datap, len);
        break;
    case WMI_GET_KEEPALIVE_CMDID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_KEEPALIVE_CMDID\n");
        ret = ath6kl_wmi_keepalive_reply_rx(wmi, datap, len);
        break;
    case WMI_GET_WOW_LIST_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_WOW_LIST_EVENTID\n");
        break;
    case WMI_GET_PMKID_LIST_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_GET_PMKID_LIST_EVENTID\n");
        ret = ath6kl_wmi_get_pmkid_list_event_rx(wmi, datap, len);
        break;
    case WMI_SET_PARAMS_REPLY_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_SET_PARAMS_REPLY_EVENTID\n");
        break;
    case WMI_ADDBA_RESP_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_ADDBA_RESP_EVENTID\n");
        break;
    case WMI_REPORT_BTCOEX_CONFIG_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "WMI_REPORT_BTCOEX_CONFIG_EVENTID\n");
        break;
    case WMI_REPORT_BTCOEX_STATS_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI,
               "WMI_REPORT_BTCOEX_STATS_EVENTID\n");
        break;
    case WMI_TX_COMPLETE_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_TX_COMPLETE_EVENTID\n");
        ret = ath6kl_wmi_tx_complete_event_rx(datap, len);
        break;
    case WMI_P2P_CAPABILITIES_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_P2P_CAPABILITIES_EVENTID\n");
        ret = ath6kl_wmi_p2p_capabilities_event_rx(datap, len);
        break;
    case WMI_P2P_INFO_EVENTID:
        ath6kl_dbg(ATH6KL_DBG_WMI, "WMI_P2P_INFO_EVENTID\n");
        ret = ath6kl_wmi_p2p_info_event_rx(datap, len);
        break;
    default:
        /* may be the event is interface specific */
        ret = ath6kl_wmi_proc_events_vif(wmi, if_idx, id, datap, len);
        break;
    }

    dev_kfree_skb(skb);
    return ret;
}

/* Control Path */
int ath6kl_wmi_control_rx(struct wmi *wmi, struct sk_buff *skb)
{
    if (WARN_ON(skb == NULL))
        return -EINVAL;

    if (skb->len < sizeof(struct wmi_cmd_hdr)) {
        ath6kl_err("bad packet 1\n");
        dev_kfree_skb(skb);
        return -EINVAL;
    }

    return ath6kl_wmi_proc_events(wmi, skb);
}

void ath6kl_wmi_reset(struct wmi *wmi)
{
    spin_lock_bh(&wmi->lock);

    wmi->fat_pipe_exist = 0;
    memset(wmi->stream_exist_for_ac, 0, sizeof(wmi->stream_exist_for_ac));

    spin_unlock_bh(&wmi->lock);
}

void *ath6kl_wmi_init(struct ath6kl *dev)
{
    struct wmi *wmi;

    wmi = kzalloc(sizeof(struct wmi), GFP_KERNEL);
    if (!wmi)
        return NULL;

    spin_lock_init(&wmi->lock);

    wmi->parent_dev = dev;

    wmi->pwr_mode = REC_POWER;

    ath6kl_wmi_reset(wmi);

    return wmi;
}

void ath6kl_wmi_shutdown(struct wmi *wmi)
{
    if (!wmi)
        return;

    kfree(wmi->last_mgmt_tx_frame);
    kfree(wmi);
}