wl_cfg80211.c

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/*
 * Copyright (c) 2010 Broadcom Corporation
 *
 * 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.
 */

/* Toplevel file. Relies on dhd_linux.c to send commands to the dongle. */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/kernel.h>
#include <linux/if_arp.h>
#include <linux/sched.h>
#include <linux/kthread.h>
#include <linux/netdevice.h>
#include <linux/bitops.h>
#include <linux/etherdevice.h>
#include <linux/ieee80211.h>
#include <linux/uaccess.h>
#include <net/cfg80211.h>
#include <net/netlink.h>

#include <brcmu_utils.h>
#include <defs.h>
#include <brcmu_wifi.h>
#include "dhd.h"
#include "wl_cfg80211.h"

#define BRCMF_SCAN_IE_LEN_MAX       2048
#define BRCMF_PNO_VERSION       2
#define BRCMF_PNO_TIME          30
#define BRCMF_PNO_REPEAT        4
#define BRCMF_PNO_FREQ_EXPO_MAX     3
#define BRCMF_PNO_MAX_PFN_COUNT     16
#define BRCMF_PNO_ENABLE_ADAPTSCAN_BIT  6
#define BRCMF_PNO_HIDDEN_BIT        2
#define BRCMF_PNO_WPA_AUTH_ANY      0xFFFFFFFF
#define BRCMF_PNO_SCAN_COMPLETE     1
#define BRCMF_PNO_SCAN_INCOMPLETE   0

#define TLV_LEN_OFF         1   /* length offset */
#define TLV_HDR_LEN         2   /* header length */
#define TLV_BODY_OFF            2   /* body offset */
#define TLV_OUI_LEN         3   /* oui id length */
#define WPA_OUI             "\x00\x50\xF2"  /* WPA OUI */
#define WPA_OUI_TYPE            1
#define RSN_OUI             "\x00\x0F\xAC"  /* RSN OUI */
#define WME_OUI_TYPE            2

#define VS_IE_FIXED_HDR_LEN     6
#define WPA_IE_VERSION_LEN      2
#define WPA_IE_MIN_OUI_LEN      4
#define WPA_IE_SUITE_COUNT_LEN      2

#define WPA_CIPHER_NONE         0   /* None */
#define WPA_CIPHER_WEP_40       1   /* WEP (40-bit) */
#define WPA_CIPHER_TKIP         2   /* TKIP: default for WPA */
#define WPA_CIPHER_AES_CCM      4   /* AES (CCM) */
#define WPA_CIPHER_WEP_104      5   /* WEP (104-bit) */

#define RSN_AKM_NONE            0   /* None (IBSS) */
#define RSN_AKM_UNSPECIFIED     1   /* Over 802.1x */
#define RSN_AKM_PSK         2   /* Pre-shared Key */
#define RSN_CAP_LEN         2   /* Length of RSN capabilities */
#define RSN_CAP_PTK_REPLAY_CNTR_MASK    0x000C

#define VNDR_IE_CMD_LEN         4   /* length of the set command
                         * string :"add", "del" (+ NUL)
                         */
#define VNDR_IE_COUNT_OFFSET        4
#define VNDR_IE_PKTFLAG_OFFSET      8
#define VNDR_IE_VSIE_OFFSET     12
#define VNDR_IE_HDR_SIZE        12
#define VNDR_IE_BEACON_FLAG     0x1
#define VNDR_IE_PRBRSP_FLAG     0x2
#define MAX_VNDR_IE_NUMBER      5

#define DOT11_MGMT_HDR_LEN      24  /* d11 management header len */
#define DOT11_BCN_PRB_FIXED_LEN     12  /* beacon/probe fixed length */

#define BRCMF_ASSOC_PARAMS_FIXED_SIZE \
    (sizeof(struct brcmf_assoc_params_le) - sizeof(u16))

static const u8 ether_bcast[ETH_ALEN] = {255, 255, 255, 255, 255, 255};

static u32 brcmf_dbg_level = WL_DBG_ERR;

static bool check_sys_up(struct wiphy *wiphy)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    if (!test_bit(WL_STATUS_READY, &cfg->status)) {
        WL_INFO("device is not ready : status (%d)\n",
            (int)cfg->status);
        return false;
    }
    return true;
}

#define CHAN2G(_channel, _freq, _flags) {           \
    .band           = IEEE80211_BAND_2GHZ,      \
    .center_freq        = (_freq),          \
    .hw_value       = (_channel),           \
    .flags          = (_flags),         \
    .max_antenna_gain   = 0,                \
    .max_power      = 30,               \
}

#define CHAN5G(_channel, _flags) {              \
    .band           = IEEE80211_BAND_5GHZ,      \
    .center_freq        = 5000 + (5 * (_channel)),  \
    .hw_value       = (_channel),           \
    .flags          = (_flags),         \
    .max_antenna_gain   = 0,                \
    .max_power      = 30,               \
}

#define RATE_TO_BASE100KBPS(rate)   (((rate) * 10) / 2)
#define RATETAB_ENT(_rateid, _flags) \
    {                                                               \
        .bitrate        = RATE_TO_BASE100KBPS(_rateid),     \
        .hw_value       = (_rateid),                            \
        .flags          = (_flags),                             \
    }

static struct ieee80211_rate __wl_rates[] = {
    RATETAB_ENT(BRCM_RATE_1M, 0),
    RATETAB_ENT(BRCM_RATE_2M, IEEE80211_RATE_SHORT_PREAMBLE),
    RATETAB_ENT(BRCM_RATE_5M5, IEEE80211_RATE_SHORT_PREAMBLE),
    RATETAB_ENT(BRCM_RATE_11M, IEEE80211_RATE_SHORT_PREAMBLE),
    RATETAB_ENT(BRCM_RATE_6M, 0),
    RATETAB_ENT(BRCM_RATE_9M, 0),
    RATETAB_ENT(BRCM_RATE_12M, 0),
    RATETAB_ENT(BRCM_RATE_18M, 0),
    RATETAB_ENT(BRCM_RATE_24M, 0),
    RATETAB_ENT(BRCM_RATE_36M, 0),
    RATETAB_ENT(BRCM_RATE_48M, 0),
    RATETAB_ENT(BRCM_RATE_54M, 0),
};

#define wl_a_rates      (__wl_rates + 4)
#define wl_a_rates_size 8
#define wl_g_rates      (__wl_rates + 0)
#define wl_g_rates_size 12

static struct ieee80211_channel __wl_2ghz_channels[] = {
    CHAN2G(1, 2412, 0),
    CHAN2G(2, 2417, 0),
    CHAN2G(3, 2422, 0),
    CHAN2G(4, 2427, 0),
    CHAN2G(5, 2432, 0),
    CHAN2G(6, 2437, 0),
    CHAN2G(7, 2442, 0),
    CHAN2G(8, 2447, 0),
    CHAN2G(9, 2452, 0),
    CHAN2G(10, 2457, 0),
    CHAN2G(11, 2462, 0),
    CHAN2G(12, 2467, 0),
    CHAN2G(13, 2472, 0),
    CHAN2G(14, 2484, 0),
};

static struct ieee80211_channel __wl_5ghz_a_channels[] = {
    CHAN5G(34, 0), CHAN5G(36, 0),
    CHAN5G(38, 0), CHAN5G(40, 0),
    CHAN5G(42, 0), CHAN5G(44, 0),
    CHAN5G(46, 0), CHAN5G(48, 0),
    CHAN5G(52, 0), CHAN5G(56, 0),
    CHAN5G(60, 0), CHAN5G(64, 0),
    CHAN5G(100, 0), CHAN5G(104, 0),
    CHAN5G(108, 0), CHAN5G(112, 0),
    CHAN5G(116, 0), CHAN5G(120, 0),
    CHAN5G(124, 0), CHAN5G(128, 0),
    CHAN5G(132, 0), CHAN5G(136, 0),
    CHAN5G(140, 0), CHAN5G(149, 0),
    CHAN5G(153, 0), CHAN5G(157, 0),
    CHAN5G(161, 0), CHAN5G(165, 0),
    CHAN5G(184, 0), CHAN5G(188, 0),
    CHAN5G(192, 0), CHAN5G(196, 0),
    CHAN5G(200, 0), CHAN5G(204, 0),
    CHAN5G(208, 0), CHAN5G(212, 0),
    CHAN5G(216, 0),
};

static struct ieee80211_channel __wl_5ghz_n_channels[] = {
    CHAN5G(32, 0), CHAN5G(34, 0),
    CHAN5G(36, 0), CHAN5G(38, 0),
    CHAN5G(40, 0), CHAN5G(42, 0),
    CHAN5G(44, 0), CHAN5G(46, 0),
    CHAN5G(48, 0), CHAN5G(50, 0),
    CHAN5G(52, 0), CHAN5G(54, 0),
    CHAN5G(56, 0), CHAN5G(58, 0),
    CHAN5G(60, 0), CHAN5G(62, 0),
    CHAN5G(64, 0), CHAN5G(66, 0),
    CHAN5G(68, 0), CHAN5G(70, 0),
    CHAN5G(72, 0), CHAN5G(74, 0),
    CHAN5G(76, 0), CHAN5G(78, 0),
    CHAN5G(80, 0), CHAN5G(82, 0),
    CHAN5G(84, 0), CHAN5G(86, 0),
    CHAN5G(88, 0), CHAN5G(90, 0),
    CHAN5G(92, 0), CHAN5G(94, 0),
    CHAN5G(96, 0), CHAN5G(98, 0),
    CHAN5G(100, 0), CHAN5G(102, 0),
    CHAN5G(104, 0), CHAN5G(106, 0),
    CHAN5G(108, 0), CHAN5G(110, 0),
    CHAN5G(112, 0), CHAN5G(114, 0),
    CHAN5G(116, 0), CHAN5G(118, 0),
    CHAN5G(120, 0), CHAN5G(122, 0),
    CHAN5G(124, 0), CHAN5G(126, 0),
    CHAN5G(128, 0), CHAN5G(130, 0),
    CHAN5G(132, 0), CHAN5G(134, 0),
    CHAN5G(136, 0), CHAN5G(138, 0),
    CHAN5G(140, 0), CHAN5G(142, 0),
    CHAN5G(144, 0), CHAN5G(145, 0),
    CHAN5G(146, 0), CHAN5G(147, 0),
    CHAN5G(148, 0), CHAN5G(149, 0),
    CHAN5G(150, 0), CHAN5G(151, 0),
    CHAN5G(152, 0), CHAN5G(153, 0),
    CHAN5G(154, 0), CHAN5G(155, 0),
    CHAN5G(156, 0), CHAN5G(157, 0),
    CHAN5G(158, 0), CHAN5G(159, 0),
    CHAN5G(160, 0), CHAN5G(161, 0),
    CHAN5G(162, 0), CHAN5G(163, 0),
    CHAN5G(164, 0), CHAN5G(165, 0),
    CHAN5G(166, 0), CHAN5G(168, 0),
    CHAN5G(170, 0), CHAN5G(172, 0),
    CHAN5G(174, 0), CHAN5G(176, 0),
    CHAN5G(178, 0), CHAN5G(180, 0),
    CHAN5G(182, 0), CHAN5G(184, 0),
    CHAN5G(186, 0), CHAN5G(188, 0),
    CHAN5G(190, 0), CHAN5G(192, 0),
    CHAN5G(194, 0), CHAN5G(196, 0),
    CHAN5G(198, 0), CHAN5G(200, 0),
    CHAN5G(202, 0), CHAN5G(204, 0),
    CHAN5G(206, 0), CHAN5G(208, 0),
    CHAN5G(210, 0), CHAN5G(212, 0),
    CHAN5G(214, 0), CHAN5G(216, 0),
    CHAN5G(218, 0), CHAN5G(220, 0),
    CHAN5G(222, 0), CHAN5G(224, 0),
    CHAN5G(226, 0), CHAN5G(228, 0),
};

static struct ieee80211_supported_band __wl_band_2ghz = {
    .band = IEEE80211_BAND_2GHZ,
    .channels = __wl_2ghz_channels,
    .n_channels = ARRAY_SIZE(__wl_2ghz_channels),
    .bitrates = wl_g_rates,
    .n_bitrates = wl_g_rates_size,
};

static struct ieee80211_supported_band __wl_band_5ghz_a = {
    .band = IEEE80211_BAND_5GHZ,
    .channels = __wl_5ghz_a_channels,
    .n_channels = ARRAY_SIZE(__wl_5ghz_a_channels),
    .bitrates = wl_a_rates,
    .n_bitrates = wl_a_rates_size,
};

static struct ieee80211_supported_band __wl_band_5ghz_n = {
    .band = IEEE80211_BAND_5GHZ,
    .channels = __wl_5ghz_n_channels,
    .n_channels = ARRAY_SIZE(__wl_5ghz_n_channels),
    .bitrates = wl_a_rates,
    .n_bitrates = wl_a_rates_size,
};

static const u32 __wl_cipher_suites[] = {
    WLAN_CIPHER_SUITE_WEP40,
    WLAN_CIPHER_SUITE_WEP104,
    WLAN_CIPHER_SUITE_TKIP,
    WLAN_CIPHER_SUITE_CCMP,
    WLAN_CIPHER_SUITE_AES_CMAC,
};

/* tag_ID/length/value_buffer tuple */
struct brcmf_tlv {
    u8 id;
    u8 len;
    u8 data[1];
};

/* Vendor specific ie. id = 221, oui and type defines exact ie */
struct brcmf_vs_tlv {
    u8 id;
    u8 len;
    u8 oui[3];
    u8 oui_type;
};

struct parsed_vndr_ie_info {
    u8 *ie_ptr;
    u32 ie_len; /* total length including id & length field */
    struct brcmf_vs_tlv vndrie;
};

struct parsed_vndr_ies {
    u32 count;
    struct parsed_vndr_ie_info ie_info[MAX_VNDR_IE_NUMBER];
};

/* Quarter dBm units to mW
 * Table starts at QDBM_OFFSET, so the first entry is mW for qdBm=153
 * Table is offset so the last entry is largest mW value that fits in
 * a u16.
 */

#define QDBM_OFFSET 153     /* Offset for first entry */
#define QDBM_TABLE_LEN 40   /* Table size */

/* Smallest mW value that will round up to the first table entry, QDBM_OFFSET.
 * Value is ( mW(QDBM_OFFSET - 1) + mW(QDBM_OFFSET) ) / 2
 */
#define QDBM_TABLE_LOW_BOUND 6493   /* Low bound */

/* Largest mW value that will round down to the last table entry,
 * QDBM_OFFSET + QDBM_TABLE_LEN-1.
 * Value is ( mW(QDBM_OFFSET + QDBM_TABLE_LEN - 1) +
 * mW(QDBM_OFFSET + QDBM_TABLE_LEN) ) / 2.
 */
#define QDBM_TABLE_HIGH_BOUND 64938 /* High bound */

static const u16 nqdBm_to_mW_map[QDBM_TABLE_LEN] = {
/* qdBm:    +0  +1  +2  +3  +4  +5  +6  +7 */
/* 153: */ 6683, 7079, 7499, 7943, 8414, 8913, 9441, 10000,
/* 161: */ 10593, 11220, 11885, 12589, 13335, 14125, 14962, 15849,
/* 169: */ 16788, 17783, 18836, 19953, 21135, 22387, 23714, 25119,
/* 177: */ 26607, 28184, 29854, 31623, 33497, 35481, 37584, 39811,
/* 185: */ 42170, 44668, 47315, 50119, 53088, 56234, 59566, 63096
};

static u16 brcmf_qdbm_to_mw(u8 qdbm)
{
    uint factor = 1;
    int idx = qdbm - QDBM_OFFSET;

    if (idx >= QDBM_TABLE_LEN)
        /* clamp to max u16 mW value */
        return 0xFFFF;

    /* scale the qdBm index up to the range of the table 0-40
     * where an offset of 40 qdBm equals a factor of 10 mW.
     */
    while (idx < 0) {
        idx += 40;
        factor *= 10;
    }

    /* return the mW value scaled down to the correct factor of 10,
     * adding in factor/2 to get proper rounding.
     */
    return (nqdBm_to_mW_map[idx] + factor / 2) / factor;
}

static u8 brcmf_mw_to_qdbm(u16 mw)
{
    u8 qdbm;
    int offset;
    uint mw_uint = mw;
    uint boundary;

    /* handle boundary case */
    if (mw_uint <= 1)
        return 0;

    offset = QDBM_OFFSET;

    /* move mw into the range of the table */
    while (mw_uint < QDBM_TABLE_LOW_BOUND) {
        mw_uint *= 10;
        offset -= 40;
    }

    for (qdbm = 0; qdbm < QDBM_TABLE_LEN - 1; qdbm++) {
        boundary = nqdBm_to_mW_map[qdbm] + (nqdBm_to_mW_map[qdbm + 1] -
                            nqdBm_to_mW_map[qdbm]) / 2;
        if (mw_uint < boundary)
            break;
    }

    qdbm += (u8) offset;

    return qdbm;
}

/* function for reading/writing a single u32 from/to the dongle */
static int
brcmf_exec_dcmd_u32(struct net_device *ndev, u32 cmd, u32 *par)
{
    int err;
    __le32 par_le = cpu_to_le32(*par);

    err = brcmf_exec_dcmd(ndev, cmd, &par_le, sizeof(__le32));
    *par = le32_to_cpu(par_le);

    return err;
}

static s32
brcmf_dev_iovar_setbuf_bsscfg(struct net_device *ndev, s8 *name,
                  void *param, s32 paramlen,
                  void *buf, s32 buflen, s32 bssidx)
{
    s32 err = -ENOMEM;
    u32 len;

    len = brcmf_c_mkiovar_bsscfg(name, param, paramlen,
                     buf, buflen, bssidx);
    BUG_ON(!len);
    if (len > 0)
        err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_VAR, buf, len);
    if (err)
        WL_ERR("error (%d)\n", err);

    return err;
}

static s32
brcmf_dev_iovar_getbuf_bsscfg(struct net_device *ndev, s8 *name,
                  void *param, s32 paramlen,
                  void *buf, s32 buflen, s32 bssidx)
{
    s32 err = -ENOMEM;
    u32 len;

    len = brcmf_c_mkiovar_bsscfg(name, param, paramlen,
                     buf, buflen, bssidx);
    BUG_ON(!len);
    if (len > 0)
        err = brcmf_exec_dcmd(ndev, BRCMF_C_GET_VAR, buf, len);
    if (err)
        WL_ERR("error (%d)\n", err);

    return err;
}

static void convert_key_from_CPU(struct brcmf_wsec_key *key,
                 struct brcmf_wsec_key_le *key_le)
{
    key_le->index = cpu_to_le32(key->index);
    key_le->len = cpu_to_le32(key->len);
    key_le->algo = cpu_to_le32(key->algo);
    key_le->flags = cpu_to_le32(key->flags);
    key_le->rxiv.hi = cpu_to_le32(key->rxiv.hi);
    key_le->rxiv.lo = cpu_to_le16(key->rxiv.lo);
    key_le->iv_initialized = cpu_to_le32(key->iv_initialized);
    memcpy(key_le->data, key->data, sizeof(key->data));
    memcpy(key_le->ea, key->ea, sizeof(key->ea));
}

static int
send_key_to_dongle(struct brcmf_cfg80211_info *cfg, s32 bssidx,
           struct net_device *ndev, struct brcmf_wsec_key *key)
{
    int err;
    struct brcmf_wsec_key_le key_le;

    convert_key_from_CPU(key, &key_le);

    err  = brcmf_dev_iovar_setbuf_bsscfg(ndev, "wsec_key", &key_le,
                         sizeof(key_le),
                         cfg->extra_buf,
                         WL_EXTRA_BUF_MAX, bssidx);

    if (err)
        WL_ERR("wsec_key error (%d)\n", err);
    return err;
}

static s32
brcmf_cfg80211_change_iface(struct wiphy *wiphy, struct net_device *ndev,
             enum nl80211_iftype type, u32 *flags,
             struct vif_params *params)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    s32 infra = 0;
    s32 ap = 0;
    s32 err = 0;

    WL_TRACE("Enter, ndev=%p, type=%d\n", ndev, type);

    switch (type) {
    case NL80211_IFTYPE_MONITOR:
    case NL80211_IFTYPE_WDS:
        WL_ERR("type (%d) : currently we do not support this type\n",
               type);
        return -EOPNOTSUPP;
    case NL80211_IFTYPE_ADHOC:
        cfg->conf->mode = WL_MODE_IBSS;
        infra = 0;
        break;
    case NL80211_IFTYPE_STATION:
        cfg->conf->mode = WL_MODE_BSS;
        infra = 1;
        break;
    case NL80211_IFTYPE_AP:
        cfg->conf->mode = WL_MODE_AP;
        ap = 1;
        break;
    default:
        err = -EINVAL;
        goto done;
    }

    if (ap) {
        set_bit(WL_STATUS_AP_CREATING, &cfg->status);
        if (!cfg->ap_info)
            cfg->ap_info = kzalloc(sizeof(*cfg->ap_info),
                           GFP_KERNEL);
        if (!cfg->ap_info) {
            err = -ENOMEM;
            goto done;
        }
        WL_INFO("IF Type = AP\n");
    } else {
        err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_INFRA, &infra);
        if (err) {
            WL_ERR("WLC_SET_INFRA error (%d)\n", err);
            err = -EAGAIN;
            goto done;
        }
        WL_INFO("IF Type = %s\n",
            (cfg->conf->mode == WL_MODE_IBSS) ?
            "Adhoc" : "Infra");
    }
    ndev->ieee80211_ptr->iftype = type;

done:
    WL_TRACE("Exit\n");

    return err;
}

static s32 brcmf_dev_intvar_set(struct net_device *ndev, s8 *name, s32 val)
{
    s8 buf[BRCMF_DCMD_SMLEN];
    u32 len;
    s32 err = 0;
    __le32 val_le;

    val_le = cpu_to_le32(val);
    len = brcmf_c_mkiovar(name, (char *)(&val_le), sizeof(val_le), buf,
                sizeof(buf));
    BUG_ON(!len);

    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_VAR, buf, len);
    if (err)
        WL_ERR("error (%d)\n", err);

    return err;
}

static s32
brcmf_dev_intvar_get(struct net_device *ndev, s8 *name, s32 *retval)
{
    union {
        s8 buf[BRCMF_DCMD_SMLEN];
        __le32 val;
    } var;
    u32 len;
    u32 data_null;
    s32 err = 0;

    len =
        brcmf_c_mkiovar(name, (char *)(&data_null), 0, (char *)(&var),
            sizeof(var.buf));
    BUG_ON(!len);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_GET_VAR, &var, len);
    if (err)
        WL_ERR("error (%d)\n", err);

    *retval = le32_to_cpu(var.val);

    return err;
}

static s32
brcmf_dev_intvar_set_bsscfg(struct net_device *ndev, s8 *name, u32 val,
                s32 bssidx)
{
    s8 buf[BRCMF_DCMD_SMLEN];
    __le32 val_le;

    val_le = cpu_to_le32(val);

    return brcmf_dev_iovar_setbuf_bsscfg(ndev, name, &val_le,
                         sizeof(val_le), buf, sizeof(buf),
                         bssidx);
}

static s32
brcmf_dev_intvar_get_bsscfg(struct net_device *ndev, s8 *name, s32 *val,
                s32 bssidx)
{
    s8 buf[BRCMF_DCMD_SMLEN];
    s32 err;
    __le32 val_le;

    memset(buf, 0, sizeof(buf));
    err = brcmf_dev_iovar_getbuf_bsscfg(ndev, name, val, sizeof(*val), buf,
                        sizeof(buf), bssidx);
    if (err == 0) {
        memcpy(&val_le, buf, sizeof(val_le));
        *val = le32_to_cpu(val_le);
    }
    return err;
}


/*
 * For now brcmf_find_bssidx will return 0. Once p2p gets implemented this
 * should return the ndev matching bssidx.
 */
static s32
brcmf_find_bssidx(struct brcmf_cfg80211_info *cfg, struct net_device *ndev)
{
    return 0;
}

static void brcmf_set_mpc(struct net_device *ndev, int mpc)
{
    s32 err = 0;
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);

    if (test_bit(WL_STATUS_READY, &cfg->status)) {
        err = brcmf_dev_intvar_set(ndev, "mpc", mpc);
        if (err) {
            WL_ERR("fail to set mpc\n");
            return;
        }
        WL_INFO("MPC : %d\n", mpc);
    }
}

static void brcmf_iscan_prep(struct brcmf_scan_params_le *params_le,
                 struct brcmf_ssid *ssid)
{
    memcpy(params_le->bssid, ether_bcast, ETH_ALEN);
    params_le->bss_type = DOT11_BSSTYPE_ANY;
    params_le->scan_type = 0;
    params_le->channel_num = 0;
    params_le->nprobes = cpu_to_le32(-1);
    params_le->active_time = cpu_to_le32(-1);
    params_le->passive_time = cpu_to_le32(-1);
    params_le->home_time = cpu_to_le32(-1);
    if (ssid && ssid->SSID_len) {
        params_le->ssid_le.SSID_len = cpu_to_le32(ssid->SSID_len);
        memcpy(&params_le->ssid_le.SSID, ssid->SSID, ssid->SSID_len);
    }
}

static s32
brcmf_dev_iovar_setbuf(struct net_device *ndev, s8 * iovar, void *param,
            s32 paramlen, void *bufptr, s32 buflen)
{
    s32 iolen;

    iolen = brcmf_c_mkiovar(iovar, param, paramlen, bufptr, buflen);
    BUG_ON(!iolen);

    return brcmf_exec_dcmd(ndev, BRCMF_C_SET_VAR, bufptr, iolen);
}

static s32
brcmf_dev_iovar_getbuf(struct net_device *ndev, s8 * iovar, void *param,
            s32 paramlen, void *bufptr, s32 buflen)
{
    s32 iolen;

    iolen = brcmf_c_mkiovar(iovar, param, paramlen, bufptr, buflen);
    BUG_ON(!iolen);

    return brcmf_exec_dcmd(ndev, BRCMF_C_GET_VAR, bufptr, buflen);
}

static s32
brcmf_run_iscan(struct brcmf_cfg80211_iscan_ctrl *iscan,
        struct brcmf_ssid *ssid, u16 action)
{
    s32 params_size = BRCMF_SCAN_PARAMS_FIXED_SIZE +
              offsetof(struct brcmf_iscan_params_le, params_le);
    struct brcmf_iscan_params_le *params;
    s32 err = 0;

    if (ssid && ssid->SSID_len)
        params_size += sizeof(struct brcmf_ssid);
    params = kzalloc(params_size, GFP_KERNEL);
    if (!params)
        return -ENOMEM;
    BUG_ON(params_size >= BRCMF_DCMD_SMLEN);

    brcmf_iscan_prep(&params->params_le, ssid);

    params->version = cpu_to_le32(BRCMF_ISCAN_REQ_VERSION);
    params->action = cpu_to_le16(action);
    params->scan_duration = cpu_to_le16(0);

    err = brcmf_dev_iovar_setbuf(iscan->ndev, "iscan", params, params_size,
                     iscan->dcmd_buf, BRCMF_DCMD_SMLEN);
    if (err) {
        if (err == -EBUSY)
            WL_INFO("system busy : iscan canceled\n");
        else
            WL_ERR("error (%d)\n", err);
    }

    kfree(params);
    return err;
}

static s32 brcmf_do_iscan(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan = cfg_to_iscan(cfg);
    struct net_device *ndev = cfg_to_ndev(cfg);
    struct brcmf_ssid ssid;
    __le32 passive_scan;
    s32 err = 0;

    /* Broadcast scan by default */
    memset(&ssid, 0, sizeof(ssid));

    iscan->state = WL_ISCAN_STATE_SCANING;

    passive_scan = cfg->active_scan ? 0 : cpu_to_le32(1);
    err = brcmf_exec_dcmd(cfg_to_ndev(cfg), BRCMF_C_SET_PASSIVE_SCAN,
            &passive_scan, sizeof(passive_scan));
    if (err) {
        WL_ERR("error (%d)\n", err);
        return err;
    }
    brcmf_set_mpc(ndev, 0);
    cfg->iscan_kickstart = true;
    err = brcmf_run_iscan(iscan, &ssid, BRCMF_SCAN_ACTION_START);
    if (err) {
        brcmf_set_mpc(ndev, 1);
        cfg->iscan_kickstart = false;
        return err;
    }
    mod_timer(&iscan->timer, jiffies + iscan->timer_ms * HZ / 1000);
    iscan->timer_on = 1;
    return err;
}

static s32
brcmf_cfg80211_iscan(struct wiphy *wiphy, struct net_device *ndev,
             struct cfg80211_scan_request *request,
             struct cfg80211_ssid *this_ssid)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    struct cfg80211_ssid *ssids;
    struct brcmf_cfg80211_scan_req *sr = cfg->scan_req_int;
    __le32 passive_scan;
    bool iscan_req;
    bool spec_scan;
    s32 err = 0;
    u32 SSID_len;

    if (test_bit(WL_STATUS_SCANNING, &cfg->status)) {
        WL_ERR("Scanning already : status (%lu)\n", cfg->status);
        return -EAGAIN;
    }
    if (test_bit(WL_STATUS_SCAN_ABORTING, &cfg->status)) {
        WL_ERR("Scanning being aborted : status (%lu)\n",
               cfg->status);
        return -EAGAIN;
    }
    if (test_bit(WL_STATUS_CONNECTING, &cfg->status)) {
        WL_ERR("Connecting : status (%lu)\n",
               cfg->status);
        return -EAGAIN;
    }

    iscan_req = false;
    spec_scan = false;
    if (request) {
        /* scan bss */
        ssids = request->ssids;
        if (cfg->iscan_on && (!ssids || !ssids->ssid_len))
            iscan_req = true;
    } else {
        /* scan in ibss */
        /* we don't do iscan in ibss */
        ssids = this_ssid;
    }

    cfg->scan_request = request;
    set_bit(WL_STATUS_SCANNING, &cfg->status);
    if (iscan_req) {
        err = brcmf_do_iscan(cfg);
        if (!err)
            return err;
        else
            goto scan_out;
    } else {
        WL_SCAN("ssid \"%s\", ssid_len (%d)\n",
               ssids->ssid, ssids->ssid_len);
        memset(&sr->ssid_le, 0, sizeof(sr->ssid_le));
        SSID_len = min_t(u8, sizeof(sr->ssid_le.SSID), ssids->ssid_len);
        sr->ssid_le.SSID_len = cpu_to_le32(0);
        if (SSID_len) {
            memcpy(sr->ssid_le.SSID, ssids->ssid, SSID_len);
            sr->ssid_le.SSID_len = cpu_to_le32(SSID_len);
            spec_scan = true;
        } else {
            WL_SCAN("Broadcast scan\n");
        }

        passive_scan = cfg->active_scan ? 0 : cpu_to_le32(1);
        err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_PASSIVE_SCAN,
                &passive_scan, sizeof(passive_scan));
        if (err) {
            WL_ERR("WLC_SET_PASSIVE_SCAN error (%d)\n", err);
            goto scan_out;
        }
        brcmf_set_mpc(ndev, 0);
        err = brcmf_exec_dcmd(ndev, BRCMF_C_SCAN, &sr->ssid_le,
                      sizeof(sr->ssid_le));
        if (err) {
            if (err == -EBUSY)
                WL_INFO("system busy : scan for \"%s\" "
                    "canceled\n", sr->ssid_le.SSID);
            else
                WL_ERR("WLC_SCAN error (%d)\n", err);

            brcmf_set_mpc(ndev, 1);
            goto scan_out;
        }
    }

    return 0;

scan_out:
    clear_bit(WL_STATUS_SCANNING, &cfg->status);
    cfg->scan_request = NULL;
    return err;
}

static void brcmf_escan_prep(struct brcmf_scan_params_le *params_le,
                 struct cfg80211_scan_request *request)
{
    u32 n_ssids;
    u32 n_channels;
    s32 i;
    s32 offset;
    u16 chanspec;
    u16 channel;
    struct ieee80211_channel *req_channel;
    char *ptr;
    struct brcmf_ssid_le ssid_le;

    memcpy(params_le->bssid, ether_bcast, ETH_ALEN);
    params_le->bss_type = DOT11_BSSTYPE_ANY;
    params_le->scan_type = 0;
    params_le->channel_num = 0;
    params_le->nprobes = cpu_to_le32(-1);
    params_le->active_time = cpu_to_le32(-1);
    params_le->passive_time = cpu_to_le32(-1);
    params_le->home_time = cpu_to_le32(-1);
    memset(&params_le->ssid_le, 0, sizeof(params_le->ssid_le));

    /* if request is null exit so it will be all channel broadcast scan */
    if (!request)
        return;

    n_ssids = request->n_ssids;
    n_channels = request->n_channels;
    /* Copy channel array if applicable */
    WL_SCAN("### List of channelspecs to scan ### %d\n", n_channels);
    if (n_channels > 0) {
        for (i = 0; i < n_channels; i++) {
            chanspec = 0;
            req_channel = request->channels[i];
            channel = ieee80211_frequency_to_channel(
                    req_channel->center_freq);
            if (req_channel->band == IEEE80211_BAND_2GHZ)
                chanspec |= WL_CHANSPEC_BAND_2G;
            else
                chanspec |= WL_CHANSPEC_BAND_5G;

            if (req_channel->flags & IEEE80211_CHAN_NO_HT40) {
                chanspec |= WL_CHANSPEC_BW_20;
                chanspec |= WL_CHANSPEC_CTL_SB_NONE;
            } else {
                chanspec |= WL_CHANSPEC_BW_40;
                if (req_channel->flags &
                        IEEE80211_CHAN_NO_HT40PLUS)
                    chanspec |= WL_CHANSPEC_CTL_SB_LOWER;
                else
                    chanspec |= WL_CHANSPEC_CTL_SB_UPPER;
            }

            chanspec |= (channel & WL_CHANSPEC_CHAN_MASK);
            WL_SCAN("Chan : %d, Channel spec: %x\n",
                channel, chanspec);
            params_le->channel_list[i] = cpu_to_le16(chanspec);
        }
    } else {
        WL_SCAN("Scanning all channels\n");
    }
    /* Copy ssid array if applicable */
    WL_SCAN("### List of SSIDs to scan ### %d\n", n_ssids);
    if (n_ssids > 0) {
        offset = offsetof(struct brcmf_scan_params_le, channel_list) +
                n_channels * sizeof(u16);
        offset = roundup(offset, sizeof(u32));
        ptr = (char *)params_le + offset;
        for (i = 0; i < n_ssids; i++) {
            memset(&ssid_le, 0, sizeof(ssid_le));
            ssid_le.SSID_len =
                    cpu_to_le32(request->ssids[i].ssid_len);
            memcpy(ssid_le.SSID, request->ssids[i].ssid,
                   request->ssids[i].ssid_len);
            if (!ssid_le.SSID_len)
                WL_SCAN("%d: Broadcast scan\n", i);
            else
                WL_SCAN("%d: scan for  %s size =%d\n", i,
                    ssid_le.SSID, ssid_le.SSID_len);
            memcpy(ptr, &ssid_le, sizeof(ssid_le));
            ptr += sizeof(ssid_le);
        }
    } else {
        WL_SCAN("Broadcast scan %p\n", request->ssids);
        if ((request->ssids) && request->ssids->ssid_len) {
            WL_SCAN("SSID %s len=%d\n", params_le->ssid_le.SSID,
                request->ssids->ssid_len);
            params_le->ssid_le.SSID_len =
                cpu_to_le32(request->ssids->ssid_len);
            memcpy(&params_le->ssid_le.SSID, request->ssids->ssid,
                request->ssids->ssid_len);
        }
    }
    /* Adding mask to channel numbers */
    params_le->channel_num =
        cpu_to_le32((n_ssids << BRCMF_SCAN_PARAMS_NSSID_SHIFT) |
            (n_channels & BRCMF_SCAN_PARAMS_COUNT_MASK));
}

static s32
brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg,
                struct net_device *ndev,
                bool aborted, bool fw_abort)
{
    struct brcmf_scan_params_le params_le;
    struct cfg80211_scan_request *scan_request;
    s32 err = 0;

    WL_SCAN("Enter\n");

    /* clear scan request, because the FW abort can cause a second call */
    /* to this functon and might cause a double cfg80211_scan_done      */
    scan_request = cfg->scan_request;
    cfg->scan_request = NULL;

    if (timer_pending(&cfg->escan_timeout))
        del_timer_sync(&cfg->escan_timeout);

    if (fw_abort) {
        /* Do a scan abort to stop the driver's scan engine */
        WL_SCAN("ABORT scan in firmware\n");
        memset(&params_le, 0, sizeof(params_le));
        memcpy(params_le.bssid, ether_bcast, ETH_ALEN);
        params_le.bss_type = DOT11_BSSTYPE_ANY;
        params_le.scan_type = 0;
        params_le.channel_num = cpu_to_le32(1);
        params_le.nprobes = cpu_to_le32(1);
        params_le.active_time = cpu_to_le32(-1);
        params_le.passive_time = cpu_to_le32(-1);
        params_le.home_time = cpu_to_le32(-1);
        /* Scan is aborted by setting channel_list[0] to -1 */
        params_le.channel_list[0] = cpu_to_le16(-1);
        /* E-Scan (or anyother type) can be aborted by SCAN */
        err = brcmf_exec_dcmd(ndev, BRCMF_C_SCAN, &params_le,
            sizeof(params_le));
        if (err)
            WL_ERR("Scan abort  failed\n");
    }
    /*
     * e-scan can be initiated by scheduled scan
     * which takes precedence.
     */
    if (cfg->sched_escan) {
        WL_SCAN("scheduled scan completed\n");
        cfg->sched_escan = false;
        if (!aborted)
            cfg80211_sched_scan_results(cfg_to_wiphy(cfg));
        brcmf_set_mpc(ndev, 1);
    } else if (scan_request) {
        WL_SCAN("ESCAN Completed scan: %s\n",
                aborted ? "Aborted" : "Done");
        cfg80211_scan_done(scan_request, aborted);
        brcmf_set_mpc(ndev, 1);
    }
    if (!test_and_clear_bit(WL_STATUS_SCANNING, &cfg->status)) {
        WL_ERR("Scan complete while device not scanning\n");
        return -EPERM;
    }

    return err;
}

static s32
brcmf_run_escan(struct brcmf_cfg80211_info *cfg, struct net_device *ndev,
        struct cfg80211_scan_request *request, u16 action)
{
    s32 params_size = BRCMF_SCAN_PARAMS_FIXED_SIZE +
              offsetof(struct brcmf_escan_params_le, params_le);
    struct brcmf_escan_params_le *params;
    s32 err = 0;

    WL_SCAN("E-SCAN START\n");

    if (request != NULL) {
        /* Allocate space for populating ssids in struct */
        params_size += sizeof(u32) * ((request->n_channels + 1) / 2);

        /* Allocate space for populating ssids in struct */
        params_size += sizeof(struct brcmf_ssid) * request->n_ssids;
    }

    params = kzalloc(params_size, GFP_KERNEL);
    if (!params) {
        err = -ENOMEM;
        goto exit;
    }
    BUG_ON(params_size + sizeof("escan") >= BRCMF_DCMD_MEDLEN);
    brcmf_escan_prep(&params->params_le, request);
    params->version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);
    params->action = cpu_to_le16(action);
    params->sync_id = cpu_to_le16(0x1234);

    err = brcmf_dev_iovar_setbuf(ndev, "escan", params, params_size,
            cfg->escan_ioctl_buf, BRCMF_DCMD_MEDLEN);
    if (err) {
        if (err == -EBUSY)
            WL_INFO("system busy : escan canceled\n");
        else
            WL_ERR("error (%d)\n", err);
    }

    kfree(params);
exit:
    return err;
}

static s32
brcmf_do_escan(struct brcmf_cfg80211_info *cfg, struct wiphy *wiphy,
           struct net_device *ndev, struct cfg80211_scan_request *request)
{
    s32 err;
    __le32 passive_scan;
    struct brcmf_scan_results *results;

    WL_SCAN("Enter\n");
    cfg->escan_info.ndev = ndev;
    cfg->escan_info.wiphy = wiphy;
    cfg->escan_info.escan_state = WL_ESCAN_STATE_SCANNING;
    passive_scan = cfg->active_scan ? 0 : cpu_to_le32(1);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_PASSIVE_SCAN,
            &passive_scan, sizeof(passive_scan));
    if (err) {
        WL_ERR("error (%d)\n", err);
        return err;
    }
    brcmf_set_mpc(ndev, 0);
    results = (struct brcmf_scan_results *)cfg->escan_info.escan_buf;
    results->version = 0;
    results->count = 0;
    results->buflen = WL_ESCAN_RESULTS_FIXED_SIZE;

    err = brcmf_run_escan(cfg, ndev, request, WL_ESCAN_ACTION_START);
    if (err)
        brcmf_set_mpc(ndev, 1);
    return err;
}

static s32
brcmf_cfg80211_escan(struct wiphy *wiphy, struct net_device *ndev,
             struct cfg80211_scan_request *request,
             struct cfg80211_ssid *this_ssid)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    struct cfg80211_ssid *ssids;
    struct brcmf_cfg80211_scan_req *sr = cfg->scan_req_int;
    __le32 passive_scan;
    bool escan_req;
    bool spec_scan;
    s32 err;
    u32 SSID_len;

    WL_SCAN("START ESCAN\n");

    if (test_bit(WL_STATUS_SCANNING, &cfg->status)) {
        WL_ERR("Scanning already : status (%lu)\n", cfg->status);
        return -EAGAIN;
    }
    if (test_bit(WL_STATUS_SCAN_ABORTING, &cfg->status)) {
        WL_ERR("Scanning being aborted : status (%lu)\n",
               cfg->status);
        return -EAGAIN;
    }
    if (test_bit(WL_STATUS_CONNECTING, &cfg->status)) {
        WL_ERR("Connecting : status (%lu)\n",
               cfg->status);
        return -EAGAIN;
    }

    /* Arm scan timeout timer */
    mod_timer(&cfg->escan_timeout, jiffies +
            WL_ESCAN_TIMER_INTERVAL_MS * HZ / 1000);

    escan_req = false;
    if (request) {
        /* scan bss */
        ssids = request->ssids;
        escan_req = true;
    } else {
        /* scan in ibss */
        /* we don't do escan in ibss */
        ssids = this_ssid;
    }

    cfg->scan_request = request;
    set_bit(WL_STATUS_SCANNING, &cfg->status);
    if (escan_req) {
        err = brcmf_do_escan(cfg, wiphy, ndev, request);
        if (!err)
            return err;
        else
            goto scan_out;
    } else {
        WL_SCAN("ssid \"%s\", ssid_len (%d)\n",
               ssids->ssid, ssids->ssid_len);
        memset(&sr->ssid_le, 0, sizeof(sr->ssid_le));
        SSID_len = min_t(u8, sizeof(sr->ssid_le.SSID), ssids->ssid_len);
        sr->ssid_le.SSID_len = cpu_to_le32(0);
        spec_scan = false;
        if (SSID_len) {
            memcpy(sr->ssid_le.SSID, ssids->ssid, SSID_len);
            sr->ssid_le.SSID_len = cpu_to_le32(SSID_len);
            spec_scan = true;
        } else
            WL_SCAN("Broadcast scan\n");

        passive_scan = cfg->active_scan ? 0 : cpu_to_le32(1);
        err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_PASSIVE_SCAN,
                &passive_scan, sizeof(passive_scan));
        if (err) {
            WL_ERR("WLC_SET_PASSIVE_SCAN error (%d)\n", err);
            goto scan_out;
        }
        brcmf_set_mpc(ndev, 0);
        err = brcmf_exec_dcmd(ndev, BRCMF_C_SCAN, &sr->ssid_le,
                      sizeof(sr->ssid_le));
        if (err) {
            if (err == -EBUSY)
                WL_INFO("BUSY: scan for \"%s\" canceled\n",
                    sr->ssid_le.SSID);
            else
                WL_ERR("WLC_SCAN error (%d)\n", err);

            brcmf_set_mpc(ndev, 1);
            goto scan_out;
        }
    }

    return 0;

scan_out:
    clear_bit(WL_STATUS_SCANNING, &cfg->status);
    if (timer_pending(&cfg->escan_timeout))
        del_timer_sync(&cfg->escan_timeout);
    cfg->scan_request = NULL;
    return err;
}

static s32
brcmf_cfg80211_scan(struct wiphy *wiphy,
         struct cfg80211_scan_request *request)
{
    struct net_device *ndev = request->wdev->netdev;
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    s32 err = 0;

    WL_TRACE("Enter\n");

    if (!check_sys_up(wiphy))
        return -EIO;

    if (cfg->iscan_on)
        err = brcmf_cfg80211_iscan(wiphy, ndev, request, NULL);
    else if (cfg->escan_on)
        err = brcmf_cfg80211_escan(wiphy, ndev, request, NULL);

    if (err)
        WL_ERR("scan error (%d)\n", err);

    WL_TRACE("Exit\n");
    return err;
}

static s32 brcmf_set_rts(struct net_device *ndev, u32 rts_threshold)
{
    s32 err = 0;

    err = brcmf_dev_intvar_set(ndev, "rtsthresh", rts_threshold);
    if (err)
        WL_ERR("Error (%d)\n", err);

    return err;
}

static s32 brcmf_set_frag(struct net_device *ndev, u32 frag_threshold)
{
    s32 err = 0;

    err = brcmf_dev_intvar_set(ndev, "fragthresh", frag_threshold);
    if (err)
        WL_ERR("Error (%d)\n", err);

    return err;
}

static s32 brcmf_set_retry(struct net_device *ndev, u32 retry, bool l)
{
    s32 err = 0;
    u32 cmd = (l ? BRCM_SET_LRL : BRCM_SET_SRL);

    err = brcmf_exec_dcmd_u32(ndev, cmd, &retry);
    if (err) {
        WL_ERR("cmd (%d) , error (%d)\n", cmd, err);
        return err;
    }
    return err;
}

static s32 brcmf_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct net_device *ndev = cfg_to_ndev(cfg);
    s32 err = 0;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    if (changed & WIPHY_PARAM_RTS_THRESHOLD &&
        (cfg->conf->rts_threshold != wiphy->rts_threshold)) {
        cfg->conf->rts_threshold = wiphy->rts_threshold;
        err = brcmf_set_rts(ndev, cfg->conf->rts_threshold);
        if (!err)
            goto done;
    }
    if (changed & WIPHY_PARAM_FRAG_THRESHOLD &&
        (cfg->conf->frag_threshold != wiphy->frag_threshold)) {
        cfg->conf->frag_threshold = wiphy->frag_threshold;
        err = brcmf_set_frag(ndev, cfg->conf->frag_threshold);
        if (!err)
            goto done;
    }
    if (changed & WIPHY_PARAM_RETRY_LONG
        && (cfg->conf->retry_long != wiphy->retry_long)) {
        cfg->conf->retry_long = wiphy->retry_long;
        err = brcmf_set_retry(ndev, cfg->conf->retry_long, true);
        if (!err)
            goto done;
    }
    if (changed & WIPHY_PARAM_RETRY_SHORT
        && (cfg->conf->retry_short != wiphy->retry_short)) {
        cfg->conf->retry_short = wiphy->retry_short;
        err = brcmf_set_retry(ndev, cfg->conf->retry_short, false);
        if (!err)
            goto done;
    }

done:
    WL_TRACE("Exit\n");
    return err;
}

static void brcmf_init_prof(struct brcmf_cfg80211_profile *prof)
{
    memset(prof, 0, sizeof(*prof));
}

static void brcmf_ch_to_chanspec(int ch, struct brcmf_join_params *join_params,
    size_t *join_params_size)
{
    u16 chanspec = 0;

    if (ch != 0) {
        if (ch <= CH_MAX_2G_CHANNEL)
            chanspec |= WL_CHANSPEC_BAND_2G;
        else
            chanspec |= WL_CHANSPEC_BAND_5G;

        chanspec |= WL_CHANSPEC_BW_20;
        chanspec |= WL_CHANSPEC_CTL_SB_NONE;

        *join_params_size += BRCMF_ASSOC_PARAMS_FIXED_SIZE +
                     sizeof(u16);

        chanspec |= (ch & WL_CHANSPEC_CHAN_MASK);
        join_params->params_le.chanspec_list[0] = cpu_to_le16(chanspec);
        join_params->params_le.chanspec_num = cpu_to_le32(1);

        WL_CONN("join_params->params.chanspec_list[0]= %#X,"
            "channel %d, chanspec %#X\n",
            chanspec, ch, chanspec);
    }
}

static void brcmf_link_down(struct brcmf_cfg80211_info *cfg)
{
    struct net_device *ndev = NULL;
    s32 err = 0;

    WL_TRACE("Enter\n");

    if (cfg->link_up) {
        ndev = cfg_to_ndev(cfg);
        WL_INFO("Call WLC_DISASSOC to stop excess roaming\n ");
        err = brcmf_exec_dcmd(ndev, BRCMF_C_DISASSOC, NULL, 0);
        if (err)
            WL_ERR("WLC_DISASSOC failed (%d)\n", err);
        cfg->link_up = false;
    }
    WL_TRACE("Exit\n");
}

static s32
brcmf_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *ndev,
              struct cfg80211_ibss_params *params)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_join_params join_params;
    size_t join_params_size = 0;
    s32 err = 0;
    s32 wsec = 0;
    s32 bcnprd;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    if (params->ssid)
        WL_CONN("SSID: %s\n", params->ssid);
    else {
        WL_CONN("SSID: NULL, Not supported\n");
        return -EOPNOTSUPP;
    }

    set_bit(WL_STATUS_CONNECTING, &cfg->status);

    if (params->bssid)
        WL_CONN("BSSID: %pM\n", params->bssid);
    else
        WL_CONN("No BSSID specified\n");

    if (params->channel)
        WL_CONN("channel: %d\n", params->channel->center_freq);
    else
        WL_CONN("no channel specified\n");

    if (params->channel_fixed)
        WL_CONN("fixed channel required\n");
    else
        WL_CONN("no fixed channel required\n");

    if (params->ie && params->ie_len)
        WL_CONN("ie len: %d\n", params->ie_len);
    else
        WL_CONN("no ie specified\n");

    if (params->beacon_interval)
        WL_CONN("beacon interval: %d\n", params->beacon_interval);
    else
        WL_CONN("no beacon interval specified\n");

    if (params->basic_rates)
        WL_CONN("basic rates: %08X\n", params->basic_rates);
    else
        WL_CONN("no basic rates specified\n");

    if (params->privacy)
        WL_CONN("privacy required\n");
    else
        WL_CONN("no privacy required\n");

    /* Configure Privacy for starter */
    if (params->privacy)
        wsec |= WEP_ENABLED;

    err = brcmf_dev_intvar_set(ndev, "wsec", wsec);
    if (err) {
        WL_ERR("wsec failed (%d)\n", err);
        goto done;
    }

    /* Configure Beacon Interval for starter */
    if (params->beacon_interval)
        bcnprd = params->beacon_interval;
    else
        bcnprd = 100;

    err = brcmf_exec_dcmd_u32(ndev, BRCM_SET_BCNPRD, &bcnprd);
    if (err) {
        WL_ERR("WLC_SET_BCNPRD failed (%d)\n", err);
        goto done;
    }

    /* Configure required join parameter */
    memset(&join_params, 0, sizeof(struct brcmf_join_params));

    /* SSID */
    profile->ssid.SSID_len = min_t(u32, params->ssid_len, 32);
    memcpy(profile->ssid.SSID, params->ssid, profile->ssid.SSID_len);
    memcpy(join_params.ssid_le.SSID, params->ssid, profile->ssid.SSID_len);
    join_params.ssid_le.SSID_len = cpu_to_le32(profile->ssid.SSID_len);
    join_params_size = sizeof(join_params.ssid_le);

    /* BSSID */
    if (params->bssid) {
        memcpy(join_params.params_le.bssid, params->bssid, ETH_ALEN);
        join_params_size = sizeof(join_params.ssid_le) +
                   BRCMF_ASSOC_PARAMS_FIXED_SIZE;
        memcpy(profile->bssid, params->bssid, ETH_ALEN);
    } else {
        memcpy(join_params.params_le.bssid, ether_bcast, ETH_ALEN);
        memset(profile->bssid, 0, ETH_ALEN);
    }

    /* Channel */
    if (params->channel) {
        u32 target_channel;

        cfg->channel =
            ieee80211_frequency_to_channel(
                params->channel->center_freq);
        if (params->channel_fixed) {
            /* adding chanspec */
            brcmf_ch_to_chanspec(cfg->channel,
                &join_params, &join_params_size);
        }

        /* set channel for starter */
        target_channel = cfg->channel;
        err = brcmf_exec_dcmd_u32(ndev, BRCM_SET_CHANNEL,
                      &target_channel);
        if (err) {
            WL_ERR("WLC_SET_CHANNEL failed (%d)\n", err);
            goto done;
        }
    } else
        cfg->channel = 0;

    cfg->ibss_starter = false;


    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_SSID,
               &join_params, join_params_size);
    if (err) {
        WL_ERR("WLC_SET_SSID failed (%d)\n", err);
        goto done;
    }

done:
    if (err)
        clear_bit(WL_STATUS_CONNECTING, &cfg->status);
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *ndev)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    s32 err = 0;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    brcmf_link_down(cfg);

    WL_TRACE("Exit\n");

    return err;
}

static s32 brcmf_set_wpa_version(struct net_device *ndev,
                 struct cfg80211_connect_params *sme)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_cfg80211_security *sec;
    s32 val = 0;
    s32 err = 0;

    if (sme->crypto.wpa_versions & NL80211_WPA_VERSION_1)
        val = WPA_AUTH_PSK | WPA_AUTH_UNSPECIFIED;
    else if (sme->crypto.wpa_versions & NL80211_WPA_VERSION_2)
        val = WPA2_AUTH_PSK | WPA2_AUTH_UNSPECIFIED;
    else
        val = WPA_AUTH_DISABLED;
    WL_CONN("setting wpa_auth to 0x%0x\n", val);
    err = brcmf_dev_intvar_set(ndev, "wpa_auth", val);
    if (err) {
        WL_ERR("set wpa_auth failed (%d)\n", err);
        return err;
    }
    sec = &profile->sec;
    sec->wpa_versions = sme->crypto.wpa_versions;
    return err;
}

static s32 brcmf_set_auth_type(struct net_device *ndev,
                   struct cfg80211_connect_params *sme)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_cfg80211_security *sec;
    s32 val = 0;
    s32 err = 0;

    switch (sme->auth_type) {
    case NL80211_AUTHTYPE_OPEN_SYSTEM:
        val = 0;
        WL_CONN("open system\n");
        break;
    case NL80211_AUTHTYPE_SHARED_KEY:
        val = 1;
        WL_CONN("shared key\n");
        break;
    case NL80211_AUTHTYPE_AUTOMATIC:
        val = 2;
        WL_CONN("automatic\n");
        break;
    case NL80211_AUTHTYPE_NETWORK_EAP:
        WL_CONN("network eap\n");
    default:
        val = 2;
        WL_ERR("invalid auth type (%d)\n", sme->auth_type);
        break;
    }

    err = brcmf_dev_intvar_set(ndev, "auth", val);
    if (err) {
        WL_ERR("set auth failed (%d)\n", err);
        return err;
    }
    sec = &profile->sec;
    sec->auth_type = sme->auth_type;
    return err;
}

static s32
brcmf_set_set_cipher(struct net_device *ndev,
             struct cfg80211_connect_params *sme)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_cfg80211_security *sec;
    s32 pval = 0;
    s32 gval = 0;
    s32 err = 0;

    if (sme->crypto.n_ciphers_pairwise) {
        switch (sme->crypto.ciphers_pairwise[0]) {
        case WLAN_CIPHER_SUITE_WEP40:
        case WLAN_CIPHER_SUITE_WEP104:
            pval = WEP_ENABLED;
            break;
        case WLAN_CIPHER_SUITE_TKIP:
            pval = TKIP_ENABLED;
            break;
        case WLAN_CIPHER_SUITE_CCMP:
            pval = AES_ENABLED;
            break;
        case WLAN_CIPHER_SUITE_AES_CMAC:
            pval = AES_ENABLED;
            break;
        default:
            WL_ERR("invalid cipher pairwise (%d)\n",
                   sme->crypto.ciphers_pairwise[0]);
            return -EINVAL;
        }
    }
    if (sme->crypto.cipher_group) {
        switch (sme->crypto.cipher_group) {
        case WLAN_CIPHER_SUITE_WEP40:
        case WLAN_CIPHER_SUITE_WEP104:
            gval = WEP_ENABLED;
            break;
        case WLAN_CIPHER_SUITE_TKIP:
            gval = TKIP_ENABLED;
            break;
        case WLAN_CIPHER_SUITE_CCMP:
            gval = AES_ENABLED;
            break;
        case WLAN_CIPHER_SUITE_AES_CMAC:
            gval = AES_ENABLED;
            break;
        default:
            WL_ERR("invalid cipher group (%d)\n",
                   sme->crypto.cipher_group);
            return -EINVAL;
        }
    }

    WL_CONN("pval (%d) gval (%d)\n", pval, gval);
    err = brcmf_dev_intvar_set(ndev, "wsec", pval | gval);
    if (err) {
        WL_ERR("error (%d)\n", err);
        return err;
    }

    sec = &profile->sec;
    sec->cipher_pairwise = sme->crypto.ciphers_pairwise[0];
    sec->cipher_group = sme->crypto.cipher_group;

    return err;
}

static s32
brcmf_set_key_mgmt(struct net_device *ndev, struct cfg80211_connect_params *sme)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_cfg80211_security *sec;
    s32 val = 0;
    s32 err = 0;

    if (sme->crypto.n_akm_suites) {
        err = brcmf_dev_intvar_get(ndev, "wpa_auth", &val);
        if (err) {
            WL_ERR("could not get wpa_auth (%d)\n", err);
            return err;
        }
        if (val & (WPA_AUTH_PSK | WPA_AUTH_UNSPECIFIED)) {
            switch (sme->crypto.akm_suites[0]) {
            case WLAN_AKM_SUITE_8021X:
                val = WPA_AUTH_UNSPECIFIED;
                break;
            case WLAN_AKM_SUITE_PSK:
                val = WPA_AUTH_PSK;
                break;
            default:
                WL_ERR("invalid cipher group (%d)\n",
                       sme->crypto.cipher_group);
                return -EINVAL;
            }
        } else if (val & (WPA2_AUTH_PSK | WPA2_AUTH_UNSPECIFIED)) {
            switch (sme->crypto.akm_suites[0]) {
            case WLAN_AKM_SUITE_8021X:
                val = WPA2_AUTH_UNSPECIFIED;
                break;
            case WLAN_AKM_SUITE_PSK:
                val = WPA2_AUTH_PSK;
                break;
            default:
                WL_ERR("invalid cipher group (%d)\n",
                       sme->crypto.cipher_group);
                return -EINVAL;
            }
        }

        WL_CONN("setting wpa_auth to %d\n", val);
        err = brcmf_dev_intvar_set(ndev, "wpa_auth", val);
        if (err) {
            WL_ERR("could not set wpa_auth (%d)\n", err);
            return err;
        }
    }
    sec = &profile->sec;
    sec->wpa_auth = sme->crypto.akm_suites[0];

    return err;
}

static s32
brcmf_set_sharedkey(struct net_device *ndev,
            struct cfg80211_connect_params *sme)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_cfg80211_security *sec;
    struct brcmf_wsec_key key;
    s32 val;
    s32 err = 0;
    s32 bssidx;

    WL_CONN("key len (%d)\n", sme->key_len);

    if (sme->key_len == 0)
        return 0;

    sec = &profile->sec;
    WL_CONN("wpa_versions 0x%x cipher_pairwise 0x%x\n",
        sec->wpa_versions, sec->cipher_pairwise);

    if (sec->wpa_versions & (NL80211_WPA_VERSION_1 | NL80211_WPA_VERSION_2))
        return 0;

    if (!(sec->cipher_pairwise &
        (WLAN_CIPHER_SUITE_WEP40 | WLAN_CIPHER_SUITE_WEP104)))
        return 0;

    memset(&key, 0, sizeof(key));
    key.len = (u32) sme->key_len;
    key.index = (u32) sme->key_idx;
    if (key.len > sizeof(key.data)) {
        WL_ERR("Too long key length (%u)\n", key.len);
        return -EINVAL;
    }
    memcpy(key.data, sme->key, key.len);
    key.flags = BRCMF_PRIMARY_KEY;
    switch (sec->cipher_pairwise) {
    case WLAN_CIPHER_SUITE_WEP40:
        key.algo = CRYPTO_ALGO_WEP1;
        break;
    case WLAN_CIPHER_SUITE_WEP104:
        key.algo = CRYPTO_ALGO_WEP128;
        break;
    default:
        WL_ERR("Invalid algorithm (%d)\n",
               sme->crypto.ciphers_pairwise[0]);
        return -EINVAL;
    }
    /* Set the new key/index */
    WL_CONN("key length (%d) key index (%d) algo (%d)\n",
        key.len, key.index, key.algo);
    WL_CONN("key \"%s\"\n", key.data);
    bssidx = brcmf_find_bssidx(cfg, ndev);
    err = send_key_to_dongle(cfg, bssidx, ndev, &key);
    if (err)
        return err;

    if (sec->auth_type == NL80211_AUTHTYPE_SHARED_KEY) {
        WL_CONN("set auth_type to shared key\n");
        val = WL_AUTH_SHARED_KEY;   /* shared key */
        err = brcmf_dev_intvar_set_bsscfg(ndev, "auth", val, bssidx);
        if (err)
            WL_ERR("set auth failed (%d)\n", err);
    }
    return err;
}

static s32
brcmf_cfg80211_connect(struct wiphy *wiphy, struct net_device *ndev,
            struct cfg80211_connect_params *sme)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct ieee80211_channel *chan = sme->channel;
    struct brcmf_join_params join_params;
    size_t join_params_size;
    struct brcmf_ssid ssid;

    s32 err = 0;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    if (!sme->ssid) {
        WL_ERR("Invalid ssid\n");
        return -EOPNOTSUPP;
    }

    set_bit(WL_STATUS_CONNECTING, &cfg->status);

    if (chan) {
        cfg->channel =
            ieee80211_frequency_to_channel(chan->center_freq);
        WL_CONN("channel (%d), center_req (%d)\n",
                cfg->channel, chan->center_freq);
    } else
        cfg->channel = 0;

    WL_INFO("ie (%p), ie_len (%zd)\n", sme->ie, sme->ie_len);

    err = brcmf_set_wpa_version(ndev, sme);
    if (err) {
        WL_ERR("wl_set_wpa_version failed (%d)\n", err);
        goto done;
    }

    err = brcmf_set_auth_type(ndev, sme);
    if (err) {
        WL_ERR("wl_set_auth_type failed (%d)\n", err);
        goto done;
    }

    err = brcmf_set_set_cipher(ndev, sme);
    if (err) {
        WL_ERR("wl_set_set_cipher failed (%d)\n", err);
        goto done;
    }

    err = brcmf_set_key_mgmt(ndev, sme);
    if (err) {
        WL_ERR("wl_set_key_mgmt failed (%d)\n", err);
        goto done;
    }

    err = brcmf_set_sharedkey(ndev, sme);
    if (err) {
        WL_ERR("brcmf_set_sharedkey failed (%d)\n", err);
        goto done;
    }

    memset(&join_params, 0, sizeof(join_params));
    join_params_size = sizeof(join_params.ssid_le);

    profile->ssid.SSID_len = min_t(u32,
                       sizeof(ssid.SSID), (u32)sme->ssid_len);
    memcpy(&join_params.ssid_le.SSID, sme->ssid, profile->ssid.SSID_len);
    memcpy(&profile->ssid.SSID, sme->ssid, profile->ssid.SSID_len);
    join_params.ssid_le.SSID_len = cpu_to_le32(profile->ssid.SSID_len);

    memcpy(join_params.params_le.bssid, ether_bcast, ETH_ALEN);

    if (ssid.SSID_len < IEEE80211_MAX_SSID_LEN)
        WL_CONN("ssid \"%s\", len (%d)\n",
               ssid.SSID, ssid.SSID_len);

    brcmf_ch_to_chanspec(cfg->channel,
                 &join_params, &join_params_size);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_SSID,
               &join_params, join_params_size);
    if (err)
        WL_ERR("WLC_SET_SSID failed (%d)\n", err);

done:
    if (err)
        clear_bit(WL_STATUS_CONNECTING, &cfg->status);
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *ndev,
               u16 reason_code)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_scb_val_le scbval;
    s32 err = 0;

    WL_TRACE("Enter. Reason code = %d\n", reason_code);
    if (!check_sys_up(wiphy))
        return -EIO;

    clear_bit(WL_STATUS_CONNECTED, &cfg->status);

    memcpy(&scbval.ea, &profile->bssid, ETH_ALEN);
    scbval.val = cpu_to_le32(reason_code);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_DISASSOC, &scbval,
                  sizeof(struct brcmf_scb_val_le));
    if (err)
        WL_ERR("error (%d)\n", err);

    cfg->link_up = false;

    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_set_tx_power(struct wiphy *wiphy,
                enum nl80211_tx_power_setting type, s32 mbm)
{

    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct net_device *ndev = cfg_to_ndev(cfg);
    u16 txpwrmw;
    s32 err = 0;
    s32 disable = 0;
    s32 dbm = MBM_TO_DBM(mbm);

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    switch (type) {
    case NL80211_TX_POWER_AUTOMATIC:
        break;
    case NL80211_TX_POWER_LIMITED:
    case NL80211_TX_POWER_FIXED:
        if (dbm < 0) {
            WL_ERR("TX_POWER_FIXED - dbm is negative\n");
            err = -EINVAL;
            goto done;
        }
        break;
    }
    /* Make sure radio is off or on as far as software is concerned */
    disable = WL_RADIO_SW_DISABLE << 16;
    err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_RADIO, &disable);
    if (err)
        WL_ERR("WLC_SET_RADIO error (%d)\n", err);

    if (dbm > 0xffff)
        txpwrmw = 0xffff;
    else
        txpwrmw = (u16) dbm;
    err = brcmf_dev_intvar_set(ndev, "qtxpower",
            (s32) (brcmf_mw_to_qdbm(txpwrmw)));
    if (err)
        WL_ERR("qtxpower error (%d)\n", err);
    cfg->conf->tx_power = dbm;

done:
    WL_TRACE("Exit\n");
    return err;
}

static s32 brcmf_cfg80211_get_tx_power(struct wiphy *wiphy, s32 *dbm)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct net_device *ndev = cfg_to_ndev(cfg);
    s32 txpwrdbm;
    u8 result;
    s32 err = 0;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    err = brcmf_dev_intvar_get(ndev, "qtxpower", &txpwrdbm);
    if (err) {
        WL_ERR("error (%d)\n", err);
        goto done;
    }

    result = (u8) (txpwrdbm & ~WL_TXPWR_OVERRIDE);
    *dbm = (s32) brcmf_qdbm_to_mw(result);

done:
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_config_default_key(struct wiphy *wiphy, struct net_device *ndev,
                   u8 key_idx, bool unicast, bool multicast)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    u32 index;
    u32 wsec;
    s32 err = 0;
    s32 bssidx;

    WL_TRACE("Enter\n");
    WL_CONN("key index (%d)\n", key_idx);
    if (!check_sys_up(wiphy))
        return -EIO;

    bssidx = brcmf_find_bssidx(cfg, ndev);
    err = brcmf_dev_intvar_get_bsscfg(ndev, "wsec", &wsec, bssidx);
    if (err) {
        WL_ERR("WLC_GET_WSEC error (%d)\n", err);
        goto done;
    }

    if (wsec & WEP_ENABLED) {
        /* Just select a new current key */
        index = key_idx;
        err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_KEY_PRIMARY,
                      &index);
        if (err)
            WL_ERR("error (%d)\n", err);
    }
done:
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_add_keyext(struct wiphy *wiphy, struct net_device *ndev,
          u8 key_idx, const u8 *mac_addr, struct key_params *params)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct brcmf_wsec_key key;
    struct brcmf_wsec_key_le key_le;
    s32 err = 0;
    s32 bssidx;

    memset(&key, 0, sizeof(key));
    key.index = (u32) key_idx;
    /* Instead of bcast for ea address for default wep keys,
         driver needs it to be Null */
    if (!is_multicast_ether_addr(mac_addr))
        memcpy((char *)&key.ea, (void *)mac_addr, ETH_ALEN);
    key.len = (u32) params->key_len;
    bssidx = brcmf_find_bssidx(cfg, ndev);
    /* check for key index change */
    if (key.len == 0) {
        /* key delete */
        err = send_key_to_dongle(cfg, bssidx, ndev, &key);
        if (err)
            WL_ERR("key delete error (%d)\n", err);
    } else {
        if (key.len > sizeof(key.data)) {
            WL_ERR("Invalid key length (%d)\n", key.len);
            return -EINVAL;
        }

        WL_CONN("Setting the key index %d\n", key.index);
        memcpy(key.data, params->key, key.len);

        if (params->cipher == WLAN_CIPHER_SUITE_TKIP) {
            u8 keybuf[8];
            memcpy(keybuf, &key.data[24], sizeof(keybuf));
            memcpy(&key.data[24], &key.data[16], sizeof(keybuf));
            memcpy(&key.data[16], keybuf, sizeof(keybuf));
        }

        /* if IW_ENCODE_EXT_RX_SEQ_VALID set */
        if (params->seq && params->seq_len == 6) {
            /* rx iv */
            u8 *ivptr;
            ivptr = (u8 *) params->seq;
            key.rxiv.hi = (ivptr[5] << 24) | (ivptr[4] << 16) |
                (ivptr[3] << 8) | ivptr[2];
            key.rxiv.lo = (ivptr[1] << 8) | ivptr[0];
            key.iv_initialized = true;
        }

        switch (params->cipher) {
        case WLAN_CIPHER_SUITE_WEP40:
            key.algo = CRYPTO_ALGO_WEP1;
            WL_CONN("WLAN_CIPHER_SUITE_WEP40\n");
            break;
        case WLAN_CIPHER_SUITE_WEP104:
            key.algo = CRYPTO_ALGO_WEP128;
            WL_CONN("WLAN_CIPHER_SUITE_WEP104\n");
            break;
        case WLAN_CIPHER_SUITE_TKIP:
            key.algo = CRYPTO_ALGO_TKIP;
            WL_CONN("WLAN_CIPHER_SUITE_TKIP\n");
            break;
        case WLAN_CIPHER_SUITE_AES_CMAC:
            key.algo = CRYPTO_ALGO_AES_CCM;
            WL_CONN("WLAN_CIPHER_SUITE_AES_CMAC\n");
            break;
        case WLAN_CIPHER_SUITE_CCMP:
            key.algo = CRYPTO_ALGO_AES_CCM;
            WL_CONN("WLAN_CIPHER_SUITE_CCMP\n");
            break;
        default:
            WL_ERR("Invalid cipher (0x%x)\n", params->cipher);
            return -EINVAL;
        }
        convert_key_from_CPU(&key, &key_le);

        brcmf_netdev_wait_pend8021x(ndev);
        err  = brcmf_dev_iovar_setbuf_bsscfg(ndev, "wsec_key", &key_le,
                             sizeof(key_le),
                             cfg->extra_buf,
                             WL_EXTRA_BUF_MAX, bssidx);
        if (err)
            WL_ERR("wsec_key error (%d)\n", err);
    }
    return err;
}

static s32
brcmf_cfg80211_add_key(struct wiphy *wiphy, struct net_device *ndev,
            u8 key_idx, bool pairwise, const u8 *mac_addr,
            struct key_params *params)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct brcmf_wsec_key key;
    s32 val;
    s32 wsec;
    s32 err = 0;
    u8 keybuf[8];
    s32 bssidx;

    WL_TRACE("Enter\n");
    WL_CONN("key index (%d)\n", key_idx);
    if (!check_sys_up(wiphy))
        return -EIO;

    if (mac_addr) {
        WL_TRACE("Exit");
        return brcmf_add_keyext(wiphy, ndev, key_idx, mac_addr, params);
    }
    memset(&key, 0, sizeof(key));

    key.len = (u32) params->key_len;
    key.index = (u32) key_idx;

    if (key.len > sizeof(key.data)) {
        WL_ERR("Too long key length (%u)\n", key.len);
        err = -EINVAL;
        goto done;
    }
    memcpy(key.data, params->key, key.len);

    key.flags = BRCMF_PRIMARY_KEY;
    switch (params->cipher) {
    case WLAN_CIPHER_SUITE_WEP40:
        key.algo = CRYPTO_ALGO_WEP1;
        val = WEP_ENABLED;
        WL_CONN("WLAN_CIPHER_SUITE_WEP40\n");
        break;
    case WLAN_CIPHER_SUITE_WEP104:
        key.algo = CRYPTO_ALGO_WEP128;
        val = WEP_ENABLED;
        WL_CONN("WLAN_CIPHER_SUITE_WEP104\n");
        break;
    case WLAN_CIPHER_SUITE_TKIP:
        if (cfg->conf->mode != WL_MODE_AP) {
            WL_CONN("Swapping key\n");
            memcpy(keybuf, &key.data[24], sizeof(keybuf));
            memcpy(&key.data[24], &key.data[16], sizeof(keybuf));
            memcpy(&key.data[16], keybuf, sizeof(keybuf));
        }
        key.algo = CRYPTO_ALGO_TKIP;
        val = TKIP_ENABLED;
        WL_CONN("WLAN_CIPHER_SUITE_TKIP\n");
        break;
    case WLAN_CIPHER_SUITE_AES_CMAC:
        key.algo = CRYPTO_ALGO_AES_CCM;
        val = AES_ENABLED;
        WL_CONN("WLAN_CIPHER_SUITE_AES_CMAC\n");
        break;
    case WLAN_CIPHER_SUITE_CCMP:
        key.algo = CRYPTO_ALGO_AES_CCM;
        val = AES_ENABLED;
        WL_CONN("WLAN_CIPHER_SUITE_CCMP\n");
        break;
    default:
        WL_ERR("Invalid cipher (0x%x)\n", params->cipher);
        err = -EINVAL;
        goto done;
    }

    bssidx = brcmf_find_bssidx(cfg, ndev);
    err = send_key_to_dongle(cfg, bssidx, ndev, &key);
    if (err)
        goto done;

    err = brcmf_dev_intvar_get_bsscfg(ndev, "wsec", &wsec, bssidx);
    if (err) {
        WL_ERR("get wsec error (%d)\n", err);
        goto done;
    }
    wsec |= val;
    err = brcmf_dev_intvar_set_bsscfg(ndev, "wsec", wsec, bssidx);
    if (err) {
        WL_ERR("set wsec error (%d)\n", err);
        goto done;
    }

done:
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_del_key(struct wiphy *wiphy, struct net_device *ndev,
            u8 key_idx, bool pairwise, const u8 *mac_addr)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct brcmf_wsec_key key;
    s32 err = 0;
    s32 bssidx;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    memset(&key, 0, sizeof(key));

    key.index = (u32) key_idx;
    key.flags = BRCMF_PRIMARY_KEY;
    key.algo = CRYPTO_ALGO_OFF;

    WL_CONN("key index (%d)\n", key_idx);

    /* Set the new key/index */
    bssidx = brcmf_find_bssidx(cfg, ndev);
    err = send_key_to_dongle(cfg, bssidx, ndev, &key);
    if (err) {
        if (err == -EINVAL) {
            if (key.index >= DOT11_MAX_DEFAULT_KEYS)
                /* we ignore this key index in this case */
                WL_ERR("invalid key index (%d)\n", key_idx);
        }
        /* Ignore this error, may happen during DISASSOC */
        err = -EAGAIN;
    }

    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_get_key(struct wiphy *wiphy, struct net_device *ndev,
            u8 key_idx, bool pairwise, const u8 *mac_addr, void *cookie,
            void (*callback) (void *cookie, struct key_params * params))
{
    struct key_params params;
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_cfg80211_security *sec;
    s32 wsec;
    s32 err = 0;
    s32 bssidx;

    WL_TRACE("Enter\n");
    WL_CONN("key index (%d)\n", key_idx);
    if (!check_sys_up(wiphy))
        return -EIO;

    memset(&params, 0, sizeof(params));

    bssidx = brcmf_find_bssidx(cfg, ndev);
    err = brcmf_dev_intvar_get_bsscfg(ndev, "wsec", &wsec, bssidx);
    if (err) {
        WL_ERR("WLC_GET_WSEC error (%d)\n", err);
        /* Ignore this error, may happen during DISASSOC */
        err = -EAGAIN;
        goto done;
    }
    switch (wsec & ~SES_OW_ENABLED) {
    case WEP_ENABLED:
        sec = &profile->sec;
        if (sec->cipher_pairwise & WLAN_CIPHER_SUITE_WEP40) {
            params.cipher = WLAN_CIPHER_SUITE_WEP40;
            WL_CONN("WLAN_CIPHER_SUITE_WEP40\n");
        } else if (sec->cipher_pairwise & WLAN_CIPHER_SUITE_WEP104) {
            params.cipher = WLAN_CIPHER_SUITE_WEP104;
            WL_CONN("WLAN_CIPHER_SUITE_WEP104\n");
        }
        break;
    case TKIP_ENABLED:
        params.cipher = WLAN_CIPHER_SUITE_TKIP;
        WL_CONN("WLAN_CIPHER_SUITE_TKIP\n");
        break;
    case AES_ENABLED:
        params.cipher = WLAN_CIPHER_SUITE_AES_CMAC;
        WL_CONN("WLAN_CIPHER_SUITE_AES_CMAC\n");
        break;
    default:
        WL_ERR("Invalid algo (0x%x)\n", wsec);
        err = -EINVAL;
        goto done;
    }
    callback(cookie, &params);

done:
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_config_default_mgmt_key(struct wiphy *wiphy,
                    struct net_device *ndev, u8 key_idx)
{
    WL_INFO("Not supported\n");

    return -EOPNOTSUPP;
}

static s32
brcmf_cfg80211_get_station(struct wiphy *wiphy, struct net_device *ndev,
               u8 *mac, struct station_info *sinfo)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_scb_val_le scb_val;
    int rssi;
    s32 rate;
    s32 err = 0;
    u8 *bssid = profile->bssid;
    struct brcmf_sta_info_le *sta_info_le;

    WL_TRACE("Enter, MAC %pM\n", mac);
    if (!check_sys_up(wiphy))
        return -EIO;

    if (cfg->conf->mode == WL_MODE_AP) {
        err = brcmf_dev_iovar_getbuf(ndev, "sta_info", mac, ETH_ALEN,
                         cfg->dcmd_buf,
                         WL_DCMD_LEN_MAX);
        if (err < 0) {
            WL_ERR("GET STA INFO failed, %d\n", err);
            goto done;
        }
        sta_info_le = (struct brcmf_sta_info_le *)cfg->dcmd_buf;

        sinfo->filled = STATION_INFO_INACTIVE_TIME;
        sinfo->inactive_time = le32_to_cpu(sta_info_le->idle) * 1000;
        if (le32_to_cpu(sta_info_le->flags) & BRCMF_STA_ASSOC) {
            sinfo->filled |= STATION_INFO_CONNECTED_TIME;
            sinfo->connected_time = le32_to_cpu(sta_info_le->in);
        }
        WL_TRACE("STA idle time : %d ms, connected time :%d sec\n",
             sinfo->inactive_time, sinfo->connected_time);
    } else if (cfg->conf->mode == WL_MODE_BSS) {
        if (memcmp(mac, bssid, ETH_ALEN)) {
            WL_ERR("Wrong Mac address cfg_mac-%pM wl_bssid-%pM\n",
                   mac, bssid);
            err = -ENOENT;
            goto done;
        }
        /* Report the current tx rate */
        err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_GET_RATE, &rate);
        if (err) {
            WL_ERR("Could not get rate (%d)\n", err);
            goto done;
        } else {
            sinfo->filled |= STATION_INFO_TX_BITRATE;
            sinfo->txrate.legacy = rate * 5;
            WL_CONN("Rate %d Mbps\n", rate / 2);
        }

        if (test_bit(WL_STATUS_CONNECTED, &cfg->status)) {
            memset(&scb_val, 0, sizeof(scb_val));
            err = brcmf_exec_dcmd(ndev, BRCMF_C_GET_RSSI, &scb_val,
                          sizeof(scb_val));
            if (err) {
                WL_ERR("Could not get rssi (%d)\n", err);
                goto done;
            } else {
                rssi = le32_to_cpu(scb_val.val);
                sinfo->filled |= STATION_INFO_SIGNAL;
                sinfo->signal = rssi;
                WL_CONN("RSSI %d dBm\n", rssi);
            }
        }
    } else
        err = -EPERM;
done:
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *ndev,
               bool enabled, s32 timeout)
{
    s32 pm;
    s32 err = 0;
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);

    WL_TRACE("Enter\n");

    /*
     * Powersave enable/disable request is coming from the
     * cfg80211 even before the interface is up. In that
     * scenario, driver will be storing the power save
     * preference in cfg struct to apply this to
     * FW later while initializing the dongle
     */
    cfg->pwr_save = enabled;
    if (!test_bit(WL_STATUS_READY, &cfg->status)) {

        WL_INFO("Device is not ready, storing the value in cfg_info struct\n");
        goto done;
    }

    pm = enabled ? PM_FAST : PM_OFF;
    WL_INFO("power save %s\n", (pm ? "enabled" : "disabled"));

    err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_PM, &pm);
    if (err) {
        if (err == -ENODEV)
            WL_ERR("net_device is not ready yet\n");
        else
            WL_ERR("error (%d)\n", err);
    }
done:
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_set_bitrate_mask(struct wiphy *wiphy, struct net_device *ndev,
                 const u8 *addr,
                 const struct cfg80211_bitrate_mask *mask)
{
    struct brcm_rateset_le rateset_le;
    s32 rate;
    s32 val;
    s32 err_bg;
    s32 err_a;
    u32 legacy;
    s32 err = 0;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    /* addr param is always NULL. ignore it */
    /* Get current rateset */
    err = brcmf_exec_dcmd(ndev, BRCM_GET_CURR_RATESET, &rateset_le,
                  sizeof(rateset_le));
    if (err) {
        WL_ERR("could not get current rateset (%d)\n", err);
        goto done;
    }

    legacy = ffs(mask->control[IEEE80211_BAND_2GHZ].legacy & 0xFFFF);
    if (!legacy)
        legacy = ffs(mask->control[IEEE80211_BAND_5GHZ].legacy &
                 0xFFFF);

    val = wl_g_rates[legacy - 1].bitrate * 100000;

    if (val < le32_to_cpu(rateset_le.count))
        /* Select rate by rateset index */
        rate = rateset_le.rates[val] & 0x7f;
    else
        /* Specified rate in bps */
        rate = val / 500000;

    WL_CONN("rate %d mbps\n", rate / 2);

    /*
     *
     *      Set rate override,
     *      Since the is a/b/g-blind, both a/bg_rate are enforced.
     */
    err_bg = brcmf_dev_intvar_set(ndev, "bg_rate", rate);
    err_a = brcmf_dev_intvar_set(ndev, "a_rate", rate);
    if (err_bg && err_a) {
        WL_ERR("could not set fixed rate (%d) (%d)\n", err_bg, err_a);
        err = err_bg | err_a;
    }

done:
    WL_TRACE("Exit\n");
    return err;
}

static s32 brcmf_inform_single_bss(struct brcmf_cfg80211_info *cfg,
                   struct brcmf_bss_info_le *bi)
{
    struct wiphy *wiphy = cfg_to_wiphy(cfg);
    struct ieee80211_channel *notify_channel;
    struct cfg80211_bss *bss;
    struct ieee80211_supported_band *band;
    s32 err = 0;
    u16 channel;
    u32 freq;
    u16 notify_capability;
    u16 notify_interval;
    u8 *notify_ie;
    size_t notify_ielen;
    s32 notify_signal;

    if (le32_to_cpu(bi->length) > WL_BSS_INFO_MAX) {
        WL_ERR("Bss info is larger than buffer. Discarding\n");
        return 0;
    }

    channel = bi->ctl_ch ? bi->ctl_ch :
                CHSPEC_CHANNEL(le16_to_cpu(bi->chanspec));

    if (channel <= CH_MAX_2G_CHANNEL)
        band = wiphy->bands[IEEE80211_BAND_2GHZ];
    else
        band = wiphy->bands[IEEE80211_BAND_5GHZ];

    freq = ieee80211_channel_to_frequency(channel, band->band);
    notify_channel = ieee80211_get_channel(wiphy, freq);

    notify_capability = le16_to_cpu(bi->capability);
    notify_interval = le16_to_cpu(bi->beacon_period);
    notify_ie = (u8 *)bi + le16_to_cpu(bi->ie_offset);
    notify_ielen = le32_to_cpu(bi->ie_length);
    notify_signal = (s16)le16_to_cpu(bi->RSSI) * 100;

    WL_CONN("bssid: %2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X\n",
            bi->BSSID[0], bi->BSSID[1], bi->BSSID[2],
            bi->BSSID[3], bi->BSSID[4], bi->BSSID[5]);
    WL_CONN("Channel: %d(%d)\n", channel, freq);
    WL_CONN("Capability: %X\n", notify_capability);
    WL_CONN("Beacon interval: %d\n", notify_interval);
    WL_CONN("Signal: %d\n", notify_signal);

    bss = cfg80211_inform_bss(wiphy, notify_channel, (const u8 *)bi->BSSID,
        0, notify_capability, notify_interval, notify_ie,
        notify_ielen, notify_signal, GFP_KERNEL);

    if (!bss)
        return -ENOMEM;

    cfg80211_put_bss(bss);

    return err;
}

static struct brcmf_bss_info_le *
next_bss_le(struct brcmf_scan_results *list, struct brcmf_bss_info_le *bss)
{
    if (bss == NULL)
        return list->bss_info_le;
    return (struct brcmf_bss_info_le *)((unsigned long)bss +
                        le32_to_cpu(bss->length));
}

static s32 brcmf_inform_bss(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_scan_results *bss_list;
    struct brcmf_bss_info_le *bi = NULL;    /* must be initialized */
    s32 err = 0;
    int i;

    bss_list = cfg->bss_list;
    if (bss_list->version != BRCMF_BSS_INFO_VERSION) {
        WL_ERR("Version %d != WL_BSS_INFO_VERSION\n",
               bss_list->version);
        return -EOPNOTSUPP;
    }
    WL_SCAN("scanned AP count (%d)\n", bss_list->count);
    for (i = 0; i < bss_list->count && i < WL_AP_MAX; i++) {
        bi = next_bss_le(bss_list, bi);
        err = brcmf_inform_single_bss(cfg, bi);
        if (err)
            break;
    }
    return err;
}

static s32 wl_inform_ibss(struct brcmf_cfg80211_info *cfg,
              struct net_device *ndev, const u8 *bssid)
{
    struct wiphy *wiphy = cfg_to_wiphy(cfg);
    struct ieee80211_channel *notify_channel;
    struct brcmf_bss_info_le *bi = NULL;
    struct ieee80211_supported_band *band;
    struct cfg80211_bss *bss;
    u8 *buf = NULL;
    s32 err = 0;
    u16 channel;
    u32 freq;
    u16 notify_capability;
    u16 notify_interval;
    u8 *notify_ie;
    size_t notify_ielen;
    s32 notify_signal;

    WL_TRACE("Enter\n");

    buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);
    if (buf == NULL) {
        err = -ENOMEM;
        goto CleanUp;
    }

    *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX);

    err = brcmf_exec_dcmd(ndev, BRCMF_C_GET_BSS_INFO, buf, WL_BSS_INFO_MAX);
    if (err) {
        WL_ERR("WLC_GET_BSS_INFO failed: %d\n", err);
        goto CleanUp;
    }

    bi = (struct brcmf_bss_info_le *)(buf + 4);

    channel = bi->ctl_ch ? bi->ctl_ch :
                CHSPEC_CHANNEL(le16_to_cpu(bi->chanspec));

    if (channel <= CH_MAX_2G_CHANNEL)
        band = wiphy->bands[IEEE80211_BAND_2GHZ];
    else
        band = wiphy->bands[IEEE80211_BAND_5GHZ];

    freq = ieee80211_channel_to_frequency(channel, band->band);
    notify_channel = ieee80211_get_channel(wiphy, freq);

    notify_capability = le16_to_cpu(bi->capability);
    notify_interval = le16_to_cpu(bi->beacon_period);
    notify_ie = (u8 *)bi + le16_to_cpu(bi->ie_offset);
    notify_ielen = le32_to_cpu(bi->ie_length);
    notify_signal = (s16)le16_to_cpu(bi->RSSI) * 100;

    WL_CONN("channel: %d(%d)\n", channel, freq);
    WL_CONN("capability: %X\n", notify_capability);
    WL_CONN("beacon interval: %d\n", notify_interval);
    WL_CONN("signal: %d\n", notify_signal);

    bss = cfg80211_inform_bss(wiphy, notify_channel, bssid,
        0, notify_capability, notify_interval,
        notify_ie, notify_ielen, notify_signal, GFP_KERNEL);

    if (!bss) {
        err = -ENOMEM;
        goto CleanUp;
    }

    cfg80211_put_bss(bss);

CleanUp:

    kfree(buf);

    WL_TRACE("Exit\n");

    return err;
}

static bool brcmf_is_ibssmode(struct brcmf_cfg80211_info *cfg)
{
    return cfg->conf->mode == WL_MODE_IBSS;
}

/*
 * Traverse a string of 1-byte tag/1-byte length/variable-length value
 * triples, returning a pointer to the substring whose first element
 * matches tag
 */
static struct brcmf_tlv *brcmf_parse_tlvs(void *buf, int buflen, uint key)
{
    struct brcmf_tlv *elt;
    int totlen;

    elt = (struct brcmf_tlv *) buf;
    totlen = buflen;

    /* find tagged parameter */
    while (totlen >= TLV_HDR_LEN) {
        int len = elt->len;

        /* validate remaining totlen */
        if ((elt->id == key) && (totlen >= (len + TLV_HDR_LEN)))
            return elt;

        elt = (struct brcmf_tlv *) ((u8 *) elt + (len + TLV_HDR_LEN));
        totlen -= (len + TLV_HDR_LEN);
    }

    return NULL;
}

/* Is any of the tlvs the expected entry? If
 * not update the tlvs buffer pointer/length.
 */
static bool
brcmf_tlv_has_ie(u8 *ie, u8 **tlvs, u32 *tlvs_len,
         u8 *oui, u32 oui_len, u8 type)
{
    /* If the contents match the OUI and the type */
    if (ie[TLV_LEN_OFF] >= oui_len + 1 &&
        !memcmp(&ie[TLV_BODY_OFF], oui, oui_len) &&
        type == ie[TLV_BODY_OFF + oui_len]) {
        return true;
    }

    if (tlvs == NULL)
        return false;
    /* point to the next ie */
    ie += ie[TLV_LEN_OFF] + TLV_HDR_LEN;
    /* calculate the length of the rest of the buffer */
    *tlvs_len -= (int)(ie - *tlvs);
    /* update the pointer to the start of the buffer */
    *tlvs = ie;

    return false;
}

struct brcmf_vs_tlv *
brcmf_find_wpaie(u8 *parse, u32 len)
{
    struct brcmf_tlv *ie;

    while ((ie = brcmf_parse_tlvs(parse, len, WLAN_EID_WPA))) {
        if (brcmf_tlv_has_ie((u8 *)ie, &parse, &len,
                     WPA_OUI, TLV_OUI_LEN, WPA_OUI_TYPE))
            return (struct brcmf_vs_tlv *)ie;
    }
    return NULL;
}

static s32 brcmf_update_bss_info(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_bss_info_le *bi;
    struct brcmf_ssid *ssid;
    struct brcmf_tlv *tim;
    u16 beacon_interval;
    u8 dtim_period;
    size_t ie_len;
    u8 *ie;
    s32 err = 0;

    WL_TRACE("Enter\n");
    if (brcmf_is_ibssmode(cfg))
        return err;

    ssid = &profile->ssid;

    *(__le32 *)cfg->extra_buf = cpu_to_le32(WL_EXTRA_BUF_MAX);
    err = brcmf_exec_dcmd(cfg_to_ndev(cfg), BRCMF_C_GET_BSS_INFO,
            cfg->extra_buf, WL_EXTRA_BUF_MAX);
    if (err) {
        WL_ERR("Could not get bss info %d\n", err);
        goto update_bss_info_out;
    }

    bi = (struct brcmf_bss_info_le *)(cfg->extra_buf + 4);
    err = brcmf_inform_single_bss(cfg, bi);
    if (err)
        goto update_bss_info_out;

    ie = ((u8 *)bi) + le16_to_cpu(bi->ie_offset);
    ie_len = le32_to_cpu(bi->ie_length);
    beacon_interval = le16_to_cpu(bi->beacon_period);

    tim = brcmf_parse_tlvs(ie, ie_len, WLAN_EID_TIM);
    if (tim)
        dtim_period = tim->data[1];
    else {
        /*
        * active scan was done so we could not get dtim
        * information out of probe response.
        * so we speficially query dtim information to dongle.
        */
        u32 var;
        err = brcmf_dev_intvar_get(cfg_to_ndev(cfg),
                       "dtim_assoc", &var);
        if (err) {
            WL_ERR("wl dtim_assoc failed (%d)\n", err);
            goto update_bss_info_out;
        }
        dtim_period = (u8)var;
    }

    profile->beacon_interval = beacon_interval;
    profile->dtim_period = dtim_period;

update_bss_info_out:
    WL_TRACE("Exit");
    return err;
}

static void brcmf_abort_scanning(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan = cfg_to_iscan(cfg);
    struct escan_info *escan = &cfg->escan_info;
    struct brcmf_ssid ssid;

    set_bit(WL_STATUS_SCAN_ABORTING, &cfg->status);
    if (cfg->iscan_on) {
        iscan->state = WL_ISCAN_STATE_IDLE;

        if (iscan->timer_on) {
            del_timer_sync(&iscan->timer);
            iscan->timer_on = 0;
        }

        cancel_work_sync(&iscan->work);

        /* Abort iscan running in FW */
        memset(&ssid, 0, sizeof(ssid));
        brcmf_run_iscan(iscan, &ssid, WL_SCAN_ACTION_ABORT);

        if (cfg->scan_request) {
            /* Indidate scan abort to cfg80211 layer */
            WL_INFO("Terminating scan in progress\n");
            cfg80211_scan_done(cfg->scan_request, true);
            cfg->scan_request = NULL;
        }
    }
    if (cfg->escan_on && cfg->scan_request) {
        escan->escan_state = WL_ESCAN_STATE_IDLE;
        brcmf_notify_escan_complete(cfg, escan->ndev, true, true);
    }
    clear_bit(WL_STATUS_SCANNING, &cfg->status);
    clear_bit(WL_STATUS_SCAN_ABORTING, &cfg->status);
}

static void brcmf_notify_iscan_complete(struct brcmf_cfg80211_iscan_ctrl *iscan,
                    bool aborted)
{
    struct brcmf_cfg80211_info *cfg = iscan_to_cfg(iscan);
    struct net_device *ndev = cfg_to_ndev(cfg);

    if (!test_and_clear_bit(WL_STATUS_SCANNING, &cfg->status)) {
        WL_ERR("Scan complete while device not scanning\n");
        return;
    }
    if (cfg->scan_request) {
        WL_SCAN("ISCAN Completed scan: %s\n",
                aborted ? "Aborted" : "Done");
        cfg80211_scan_done(cfg->scan_request, aborted);
        brcmf_set_mpc(ndev, 1);
        cfg->scan_request = NULL;
    }
    cfg->iscan_kickstart = false;
}

static s32 brcmf_wakeup_iscan(struct brcmf_cfg80211_iscan_ctrl *iscan)
{
    if (iscan->state != WL_ISCAN_STATE_IDLE) {
        WL_SCAN("wake up iscan\n");
        schedule_work(&iscan->work);
        return 0;
    }

    return -EIO;
}

static s32
brcmf_get_iscan_results(struct brcmf_cfg80211_iscan_ctrl *iscan, u32 *status,
             struct brcmf_scan_results **bss_list)
{
    struct brcmf_iscan_results list;
    struct brcmf_scan_results *results;
    struct brcmf_scan_results_le *results_le;
    struct brcmf_iscan_results *list_buf;
    s32 err = 0;

    memset(iscan->scan_buf, 0, WL_ISCAN_BUF_MAX);
    list_buf = (struct brcmf_iscan_results *)iscan->scan_buf;
    results = &list_buf->results;
    results_le = &list_buf->results_le;
    results->buflen = BRCMF_ISCAN_RESULTS_FIXED_SIZE;
    results->version = 0;
    results->count = 0;

    memset(&list, 0, sizeof(list));
    list.results_le.buflen = cpu_to_le32(WL_ISCAN_BUF_MAX);
    err = brcmf_dev_iovar_getbuf(iscan->ndev, "iscanresults", &list,
                     BRCMF_ISCAN_RESULTS_FIXED_SIZE,
                     iscan->scan_buf, WL_ISCAN_BUF_MAX);
    if (err) {
        WL_ERR("error (%d)\n", err);
        return err;
    }
    results->buflen = le32_to_cpu(results_le->buflen);
    results->version = le32_to_cpu(results_le->version);
    results->count = le32_to_cpu(results_le->count);
    WL_SCAN("results->count = %d\n", results_le->count);
    WL_SCAN("results->buflen = %d\n", results_le->buflen);
    *status = le32_to_cpu(list_buf->status_le);
    WL_SCAN("status = %d\n", *status);
    *bss_list = results;

    return err;
}

static s32 brcmf_iscan_done(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan = cfg->iscan;
    s32 err = 0;

    iscan->state = WL_ISCAN_STATE_IDLE;
    brcmf_inform_bss(cfg);
    brcmf_notify_iscan_complete(iscan, false);

    return err;
}

static s32 brcmf_iscan_pending(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan = cfg->iscan;
    s32 err = 0;

    /* Reschedule the timer */
    mod_timer(&iscan->timer, jiffies + iscan->timer_ms * HZ / 1000);
    iscan->timer_on = 1;

    return err;
}

static s32 brcmf_iscan_inprogress(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan = cfg->iscan;
    s32 err = 0;

    brcmf_inform_bss(cfg);
    brcmf_run_iscan(iscan, NULL, BRCMF_SCAN_ACTION_CONTINUE);
    /* Reschedule the timer */
    mod_timer(&iscan->timer, jiffies + iscan->timer_ms * HZ / 1000);
    iscan->timer_on = 1;

    return err;
}

static s32 brcmf_iscan_aborted(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan = cfg->iscan;
    s32 err = 0;

    iscan->state = WL_ISCAN_STATE_IDLE;
    brcmf_notify_iscan_complete(iscan, true);

    return err;
}

static void brcmf_cfg80211_iscan_handler(struct work_struct *work)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan =
            container_of(work, struct brcmf_cfg80211_iscan_ctrl,
                     work);
    struct brcmf_cfg80211_info *cfg = iscan_to_cfg(iscan);
    struct brcmf_cfg80211_iscan_eloop *el = &iscan->el;
    u32 status = BRCMF_SCAN_RESULTS_PARTIAL;

    if (iscan->timer_on) {
        del_timer_sync(&iscan->timer);
        iscan->timer_on = 0;
    }

    if (brcmf_get_iscan_results(iscan, &status, &cfg->bss_list)) {
        status = BRCMF_SCAN_RESULTS_ABORTED;
        WL_ERR("Abort iscan\n");
    }

    el->handler[status](cfg);
}

static void brcmf_iscan_timer(unsigned long data)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan =
            (struct brcmf_cfg80211_iscan_ctrl *)data;

    if (iscan) {
        iscan->timer_on = 0;
        WL_SCAN("timer expired\n");
        brcmf_wakeup_iscan(iscan);
    }
}

static s32 brcmf_invoke_iscan(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan = cfg_to_iscan(cfg);

    if (cfg->iscan_on) {
        iscan->state = WL_ISCAN_STATE_IDLE;
        INIT_WORK(&iscan->work, brcmf_cfg80211_iscan_handler);
    }

    return 0;
}

static void brcmf_init_iscan_eloop(struct brcmf_cfg80211_iscan_eloop *el)
{
    memset(el, 0, sizeof(*el));
    el->handler[BRCMF_SCAN_RESULTS_SUCCESS] = brcmf_iscan_done;
    el->handler[BRCMF_SCAN_RESULTS_PARTIAL] = brcmf_iscan_inprogress;
    el->handler[BRCMF_SCAN_RESULTS_PENDING] = brcmf_iscan_pending;
    el->handler[BRCMF_SCAN_RESULTS_ABORTED] = brcmf_iscan_aborted;
    el->handler[BRCMF_SCAN_RESULTS_NO_MEM] = brcmf_iscan_aborted;
}

static s32 brcmf_init_iscan(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_iscan_ctrl *iscan = cfg_to_iscan(cfg);
    int err = 0;

    if (cfg->iscan_on) {
        iscan->ndev = cfg_to_ndev(cfg);
        brcmf_init_iscan_eloop(&iscan->el);
        iscan->timer_ms = WL_ISCAN_TIMER_INTERVAL_MS;
        init_timer(&iscan->timer);
        iscan->timer.data = (unsigned long) iscan;
        iscan->timer.function = brcmf_iscan_timer;
        err = brcmf_invoke_iscan(cfg);
        if (!err)
            iscan->data = cfg;
    }

    return err;
}

static void brcmf_cfg80211_escan_timeout_worker(struct work_struct *work)
{
    struct brcmf_cfg80211_info *cfg =
            container_of(work, struct brcmf_cfg80211_info,
                     escan_timeout_work);

    brcmf_notify_escan_complete(cfg,
        cfg->escan_info.ndev, true, true);
}

static void brcmf_escan_timeout(unsigned long data)
{
    struct brcmf_cfg80211_info *cfg =
            (struct brcmf_cfg80211_info *)data;

    if (cfg->scan_request) {
        WL_ERR("timer expired\n");
        if (cfg->escan_on)
            schedule_work(&cfg->escan_timeout_work);
    }
}

static s32
brcmf_compare_update_same_bss(struct brcmf_bss_info_le *bss,
                  struct brcmf_bss_info_le *bss_info_le)
{
    if (!memcmp(&bss_info_le->BSSID, &bss->BSSID, ETH_ALEN) &&
        (CHSPEC_BAND(le16_to_cpu(bss_info_le->chanspec)) ==
        CHSPEC_BAND(le16_to_cpu(bss->chanspec))) &&
        bss_info_le->SSID_len == bss->SSID_len &&
        !memcmp(bss_info_le->SSID, bss->SSID, bss_info_le->SSID_len)) {
        if ((bss->flags & WLC_BSS_RSSI_ON_CHANNEL) ==
            (bss_info_le->flags & WLC_BSS_RSSI_ON_CHANNEL)) {
            s16 bss_rssi = le16_to_cpu(bss->RSSI);
            s16 bss_info_rssi = le16_to_cpu(bss_info_le->RSSI);

            /* preserve max RSSI if the measurements are
            * both on-channel or both off-channel
            */
            if (bss_info_rssi > bss_rssi)
                bss->RSSI = bss_info_le->RSSI;
        } else if ((bss->flags & WLC_BSS_RSSI_ON_CHANNEL) &&
            (bss_info_le->flags & WLC_BSS_RSSI_ON_CHANNEL) == 0) {
            /* preserve the on-channel rssi measurement
            * if the new measurement is off channel
            */
            bss->RSSI = bss_info_le->RSSI;
            bss->flags |= WLC_BSS_RSSI_ON_CHANNEL;
        }
        return 1;
    }
    return 0;
}

static s32
brcmf_cfg80211_escan_handler(struct brcmf_cfg80211_info *cfg,
                 struct net_device *ndev,
                 const struct brcmf_event_msg *e, void *data)
{
    s32 status;
    s32 err = 0;
    struct brcmf_escan_result_le *escan_result_le;
    struct brcmf_bss_info_le *bss_info_le;
    struct brcmf_bss_info_le *bss = NULL;
    u32 bi_length;
    struct brcmf_scan_results *list;
    u32 i;
    bool aborted;

    status = be32_to_cpu(e->status);

    if (!ndev || !cfg->escan_on ||
            !test_bit(WL_STATUS_SCANNING, &cfg->status)) {
        WL_ERR("scan not ready ndev %p wl->escan_on %d drv_status %x\n",
            ndev, cfg->escan_on,
            !test_bit(WL_STATUS_SCANNING, &cfg->status));
        return -EPERM;
    }

    if (status == BRCMF_E_STATUS_PARTIAL) {
        WL_SCAN("ESCAN Partial result\n");
        escan_result_le = (struct brcmf_escan_result_le *) data;
        if (!escan_result_le) {
            WL_ERR("Invalid escan result (NULL pointer)\n");
            goto exit;
        }
        if (!cfg->scan_request) {
            WL_SCAN("result without cfg80211 request\n");
            goto exit;
        }

        if (le16_to_cpu(escan_result_le->bss_count) != 1) {
            WL_ERR("Invalid bss_count %d: ignoring\n",
                escan_result_le->bss_count);
            goto exit;
        }
        bss_info_le = &escan_result_le->bss_info_le;

        bi_length = le32_to_cpu(bss_info_le->length);
        if (bi_length != (le32_to_cpu(escan_result_le->buflen) -
                    WL_ESCAN_RESULTS_FIXED_SIZE)) {
            WL_ERR("Invalid bss_info length %d: ignoring\n",
                bi_length);
            goto exit;
        }

        if (!(cfg_to_wiphy(cfg)->interface_modes &
                    BIT(NL80211_IFTYPE_ADHOC))) {
            if (le16_to_cpu(bss_info_le->capability) &
                        WLAN_CAPABILITY_IBSS) {
                WL_ERR("Ignoring IBSS result\n");
                goto exit;
            }
        }

        list = (struct brcmf_scan_results *)
                cfg->escan_info.escan_buf;
        if (bi_length > WL_ESCAN_BUF_SIZE - list->buflen) {
            WL_ERR("Buffer is too small: ignoring\n");
            goto exit;
        }

        for (i = 0; i < list->count; i++) {
            bss = bss ? (struct brcmf_bss_info_le *)
                ((unsigned char *)bss +
                le32_to_cpu(bss->length)) : list->bss_info_le;
            if (brcmf_compare_update_same_bss(bss, bss_info_le))
                goto exit;
        }
        memcpy(&(cfg->escan_info.escan_buf[list->buflen]),
            bss_info_le, bi_length);
        list->version = le32_to_cpu(bss_info_le->version);
        list->buflen += bi_length;
        list->count++;
    } else {
        cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
        if (cfg->scan_request) {
            cfg->bss_list = (struct brcmf_scan_results *)
                cfg->escan_info.escan_buf;
            brcmf_inform_bss(cfg);
            aborted = status != BRCMF_E_STATUS_SUCCESS;
            brcmf_notify_escan_complete(cfg, ndev, aborted,
                            false);
        } else
            WL_ERR("Unexpected scan result 0x%x\n", status);
    }
exit:
    return err;
}

static void brcmf_init_escan(struct brcmf_cfg80211_info *cfg)
{

    if (cfg->escan_on) {
        cfg->el.handler[BRCMF_E_ESCAN_RESULT] =
            brcmf_cfg80211_escan_handler;
        cfg->escan_info.escan_state = WL_ESCAN_STATE_IDLE;
        /* Init scan_timeout timer */
        init_timer(&cfg->escan_timeout);
        cfg->escan_timeout.data = (unsigned long) cfg;
        cfg->escan_timeout.function = brcmf_escan_timeout;
        INIT_WORK(&cfg->escan_timeout_work,
            brcmf_cfg80211_escan_timeout_worker);
    }
}

static __always_inline void brcmf_delay(u32 ms)
{
    if (ms < 1000 / HZ) {
        cond_resched();
        mdelay(ms);
    } else {
        msleep(ms);
    }
}

static s32 brcmf_cfg80211_resume(struct wiphy *wiphy)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);

    /*
     * Check for WL_STATUS_READY before any function call which
     * could result is bus access. Don't block the resume for
     * any driver error conditions
     */
    WL_TRACE("Enter\n");

    if (test_bit(WL_STATUS_READY, &cfg->status))
        brcmf_invoke_iscan(wiphy_to_cfg(wiphy));

    WL_TRACE("Exit\n");
    return 0;
}

static s32 brcmf_cfg80211_suspend(struct wiphy *wiphy,
                  struct cfg80211_wowlan *wow)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct net_device *ndev = cfg_to_ndev(cfg);

    WL_TRACE("Enter\n");

    /*
     * Check for WL_STATUS_READY before any function call which
     * could result is bus access. Don't block the suspend for
     * any driver error conditions
     */

    /*
     * While going to suspend if associated with AP disassociate
     * from AP to save power while system is in suspended state
     */
    if ((test_bit(WL_STATUS_CONNECTED, &cfg->status) ||
         test_bit(WL_STATUS_CONNECTING, &cfg->status)) &&
         test_bit(WL_STATUS_READY, &cfg->status)) {
        WL_INFO("Disassociating from AP"
            " while entering suspend state\n");
        brcmf_link_down(cfg);

        /*
         * Make sure WPA_Supplicant receives all the event
         * generated due to DISASSOC call to the fw to keep
         * the state fw and WPA_Supplicant state consistent
         */
        brcmf_delay(500);
    }

    if (test_bit(WL_STATUS_READY, &cfg->status))
        brcmf_abort_scanning(cfg);
    else
        clear_bit(WL_STATUS_SCANNING, &cfg->status);

    /* Turn off watchdog timer */
    if (test_bit(WL_STATUS_READY, &cfg->status))
        brcmf_set_mpc(ndev, 1);

    WL_TRACE("Exit\n");

    return 0;
}

static __used s32
brcmf_dev_bufvar_set(struct net_device *ndev, s8 *name, s8 *buf, s32 len)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    u32 buflen;

    buflen = brcmf_c_mkiovar(name, buf, len, cfg->dcmd_buf,
                   WL_DCMD_LEN_MAX);
    BUG_ON(!buflen);

    return brcmf_exec_dcmd(ndev, BRCMF_C_SET_VAR, cfg->dcmd_buf,
                   buflen);
}

static s32
brcmf_dev_bufvar_get(struct net_device *ndev, s8 *name, s8 *buf,
          s32 buf_len)
{
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
    u32 len;
    s32 err = 0;

    len = brcmf_c_mkiovar(name, NULL, 0, cfg->dcmd_buf,
                WL_DCMD_LEN_MAX);
    BUG_ON(!len);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_GET_VAR, cfg->dcmd_buf,
                  WL_DCMD_LEN_MAX);
    if (err) {
        WL_ERR("error (%d)\n", err);
        return err;
    }
    memcpy(buf, cfg->dcmd_buf, buf_len);

    return err;
}

static __used s32
brcmf_update_pmklist(struct net_device *ndev,
             struct brcmf_cfg80211_pmk_list *pmk_list, s32 err)
{
    int i, j;
    int pmkid_len;

    pmkid_len = le32_to_cpu(pmk_list->pmkids.npmkid);

    WL_CONN("No of elements %d\n", pmkid_len);
    for (i = 0; i < pmkid_len; i++) {
        WL_CONN("PMKID[%d]: %pM =\n", i,
            &pmk_list->pmkids.pmkid[i].BSSID);
        for (j = 0; j < WLAN_PMKID_LEN; j++)
            WL_CONN("%02x\n", pmk_list->pmkids.pmkid[i].PMKID[j]);
    }

    if (!err)
        brcmf_dev_bufvar_set(ndev, "pmkid_info", (char *)pmk_list,
                    sizeof(*pmk_list));

    return err;
}

static s32
brcmf_cfg80211_set_pmksa(struct wiphy *wiphy, struct net_device *ndev,
             struct cfg80211_pmksa *pmksa)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct pmkid_list *pmkids = &cfg->pmk_list->pmkids;
    s32 err = 0;
    int i;
    int pmkid_len;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    pmkid_len = le32_to_cpu(pmkids->npmkid);
    for (i = 0; i < pmkid_len; i++)
        if (!memcmp(pmksa->bssid, pmkids->pmkid[i].BSSID, ETH_ALEN))
            break;
    if (i < WL_NUM_PMKIDS_MAX) {
        memcpy(pmkids->pmkid[i].BSSID, pmksa->bssid, ETH_ALEN);
        memcpy(pmkids->pmkid[i].PMKID, pmksa->pmkid, WLAN_PMKID_LEN);
        if (i == pmkid_len) {
            pmkid_len++;
            pmkids->npmkid = cpu_to_le32(pmkid_len);
        }
    } else
        err = -EINVAL;

    WL_CONN("set_pmksa,IW_PMKSA_ADD - PMKID: %pM =\n",
        pmkids->pmkid[pmkid_len].BSSID);
    for (i = 0; i < WLAN_PMKID_LEN; i++)
        WL_CONN("%02x\n", pmkids->pmkid[pmkid_len].PMKID[i]);

    err = brcmf_update_pmklist(ndev, cfg->pmk_list, err);

    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_cfg80211_del_pmksa(struct wiphy *wiphy, struct net_device *ndev,
              struct cfg80211_pmksa *pmksa)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct pmkid_list pmkid;
    s32 err = 0;
    int i, pmkid_len;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    memcpy(&pmkid.pmkid[0].BSSID, pmksa->bssid, ETH_ALEN);
    memcpy(&pmkid.pmkid[0].PMKID, pmksa->pmkid, WLAN_PMKID_LEN);

    WL_CONN("del_pmksa,IW_PMKSA_REMOVE - PMKID: %pM =\n",
           &pmkid.pmkid[0].BSSID);
    for (i = 0; i < WLAN_PMKID_LEN; i++)
        WL_CONN("%02x\n", pmkid.pmkid[0].PMKID[i]);

    pmkid_len = le32_to_cpu(cfg->pmk_list->pmkids.npmkid);
    for (i = 0; i < pmkid_len; i++)
        if (!memcmp
            (pmksa->bssid, &cfg->pmk_list->pmkids.pmkid[i].BSSID,
             ETH_ALEN))
            break;

    if ((pmkid_len > 0)
        && (i < pmkid_len)) {
        memset(&cfg->pmk_list->pmkids.pmkid[i], 0,
               sizeof(struct pmkid));
        for (; i < (pmkid_len - 1); i++) {
            memcpy(&cfg->pmk_list->pmkids.pmkid[i].BSSID,
                   &cfg->pmk_list->pmkids.pmkid[i + 1].BSSID,
                   ETH_ALEN);
            memcpy(&cfg->pmk_list->pmkids.pmkid[i].PMKID,
                   &cfg->pmk_list->pmkids.pmkid[i + 1].PMKID,
                   WLAN_PMKID_LEN);
        }
        cfg->pmk_list->pmkids.npmkid = cpu_to_le32(pmkid_len - 1);
    } else
        err = -EINVAL;

    err = brcmf_update_pmklist(ndev, cfg->pmk_list, err);

    WL_TRACE("Exit\n");
    return err;

}

static s32
brcmf_cfg80211_flush_pmksa(struct wiphy *wiphy, struct net_device *ndev)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    s32 err = 0;

    WL_TRACE("Enter\n");
    if (!check_sys_up(wiphy))
        return -EIO;

    memset(cfg->pmk_list, 0, sizeof(*cfg->pmk_list));
    err = brcmf_update_pmklist(ndev, cfg->pmk_list, err);

    WL_TRACE("Exit\n");
    return err;

}

/*
 * PFN result doesn't have all the info which are
 * required by the supplicant
 * (For e.g IEs) Do a target Escan so that sched scan results are reported
 * via wl_inform_single_bss in the required format. Escan does require the
 * scan request in the form of cfg80211_scan_request. For timebeing, create
 * cfg80211_scan_request one out of the received PNO event.
 */
static s32
brcmf_notify_sched_scan_results(struct brcmf_cfg80211_info *cfg,
                struct net_device *ndev,
                const struct brcmf_event_msg *e, void *data)
{
    struct brcmf_pno_net_info_le *netinfo, *netinfo_start;
    struct cfg80211_scan_request *request = NULL;
    struct cfg80211_ssid *ssid = NULL;
    struct ieee80211_channel *channel = NULL;
    struct wiphy *wiphy = cfg_to_wiphy(cfg);
    int err = 0;
    int channel_req = 0;
    int band = 0;
    struct brcmf_pno_scanresults_le *pfn_result;
    u32 result_count;
    u32 status;

    WL_SCAN("Enter\n");

    if (e->event_type == cpu_to_be32(BRCMF_E_PFN_NET_LOST)) {
        WL_SCAN("PFN NET LOST event. Do Nothing\n");
        return 0;
    }

    pfn_result = (struct brcmf_pno_scanresults_le *)data;
    result_count = le32_to_cpu(pfn_result->count);
    status = le32_to_cpu(pfn_result->status);

    /*
     * PFN event is limited to fit 512 bytes so we may get
     * multiple NET_FOUND events. For now place a warning here.
     */
    WARN_ON(status != BRCMF_PNO_SCAN_COMPLETE);
    WL_SCAN("PFN NET FOUND event. count: %d\n", result_count);
    if (result_count > 0) {
        int i;

        request = kzalloc(sizeof(*request), GFP_KERNEL);
        ssid = kcalloc(result_count, sizeof(*ssid), GFP_KERNEL);
        channel = kcalloc(result_count, sizeof(*channel), GFP_KERNEL);
        if (!request || !ssid || !channel) {
            err = -ENOMEM;
            goto out_err;
        }

        request->wiphy = wiphy;
        data += sizeof(struct brcmf_pno_scanresults_le);
        netinfo_start = (struct brcmf_pno_net_info_le *)data;

        for (i = 0; i < result_count; i++) {
            netinfo = &netinfo_start[i];
            if (!netinfo) {
                WL_ERR("Invalid netinfo ptr. index: %d\n", i);
                err = -EINVAL;
                goto out_err;
            }

            WL_SCAN("SSID:%s Channel:%d\n",
            netinfo->SSID, netinfo->channel);
            memcpy(ssid[i].ssid, netinfo->SSID, netinfo->SSID_len);
            ssid[i].ssid_len = netinfo->SSID_len;
            request->n_ssids++;

            channel_req = netinfo->channel;
            if (channel_req <= CH_MAX_2G_CHANNEL)
                band = NL80211_BAND_2GHZ;
            else
                band = NL80211_BAND_5GHZ;
            channel[i].center_freq =
                ieee80211_channel_to_frequency(channel_req,
                                   band);
            channel[i].band = band;
            channel[i].flags |= IEEE80211_CHAN_NO_HT40;
            request->channels[i] = &channel[i];
            request->n_channels++;
        }

        /* assign parsed ssid array */
        if (request->n_ssids)
            request->ssids = &ssid[0];

        if (test_bit(WL_STATUS_SCANNING, &cfg->status)) {
            /* Abort any on-going scan */
            brcmf_abort_scanning(cfg);
        }

        set_bit(WL_STATUS_SCANNING, &cfg->status);
        err = brcmf_do_escan(cfg, wiphy, ndev, request);
        if (err) {
            clear_bit(WL_STATUS_SCANNING, &cfg->status);
            goto out_err;
        }
        cfg->sched_escan = true;
        cfg->scan_request = request;
    } else {
        WL_ERR("FALSE PNO Event. (pfn_count == 0)\n");
        goto out_err;
    }

    kfree(ssid);
    kfree(channel);
    kfree(request);
    return 0;

out_err:
    kfree(ssid);
    kfree(channel);
    kfree(request);
    cfg80211_sched_scan_stopped(wiphy);
    return err;
}

#ifndef CONFIG_BRCMISCAN
static int brcmf_dev_pno_clean(struct net_device *ndev)
{
    char iovbuf[128];
    int ret;

    /* Disable pfn */
    ret = brcmf_dev_intvar_set(ndev, "pfn", 0);
    if (ret == 0) {
        /* clear pfn */
        ret = brcmf_dev_iovar_setbuf(ndev, "pfnclear", NULL, 0,
                         iovbuf, sizeof(iovbuf));
    }
    if (ret < 0)
        WL_ERR("failed code %d\n", ret);

    return ret;
}

static int brcmf_dev_pno_config(struct net_device *ndev)
{
    struct brcmf_pno_param_le pfn_param;
    char iovbuf[128];

    memset(&pfn_param, 0, sizeof(pfn_param));
    pfn_param.version = cpu_to_le32(BRCMF_PNO_VERSION);

    /* set extra pno params */
    pfn_param.flags = cpu_to_le16(1 << BRCMF_PNO_ENABLE_ADAPTSCAN_BIT);
    pfn_param.repeat = BRCMF_PNO_REPEAT;
    pfn_param.exp = BRCMF_PNO_FREQ_EXPO_MAX;

    /* set up pno scan fr */
    pfn_param.scan_freq = cpu_to_le32(BRCMF_PNO_TIME);

    return brcmf_dev_iovar_setbuf(ndev, "pfn_set",
                      &pfn_param, sizeof(pfn_param),
                      iovbuf, sizeof(iovbuf));
}

static int
brcmf_cfg80211_sched_scan_start(struct wiphy *wiphy,
                struct net_device *ndev,
                struct cfg80211_sched_scan_request *request)
{
    char iovbuf[128];
    struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
    struct brcmf_pno_net_param_le pfn;
    int i;
    int ret = 0;

    WL_SCAN("Enter n_match_sets:%d   n_ssids:%d\n",
        request->n_match_sets, request->n_ssids);
    if (test_bit(WL_STATUS_SCANNING, &cfg->status)) {
        WL_ERR("Scanning already : status (%lu)\n", cfg->status);
        return -EAGAIN;
    }

    if (!request || !request->n_ssids || !request->n_match_sets) {
        WL_ERR("Invalid sched scan req!! n_ssids:%d\n",
               request ? request->n_ssids : 0);
        return -EINVAL;
    }

    if (request->n_ssids > 0) {
        for (i = 0; i < request->n_ssids; i++) {
            /* Active scan req for ssids */
            WL_SCAN(">>> Active scan req for ssid (%s)\n",
                request->ssids[i].ssid);

            /*
             * match_set ssids is a supert set of n_ssid list,
             * so we need not add these set seperately.
             */
        }
    }

    if (request->n_match_sets > 0) {
        /* clean up everything */
        ret = brcmf_dev_pno_clean(ndev);
        if  (ret < 0) {
            WL_ERR("failed error=%d\n", ret);
            return ret;
        }

        /* configure pno */
        ret = brcmf_dev_pno_config(ndev);
        if (ret < 0) {
            WL_ERR("PNO setup failed!! ret=%d\n", ret);
            return -EINVAL;
        }

        /* configure each match set */
        for (i = 0; i < request->n_match_sets; i++) {
            struct cfg80211_ssid *ssid;
            u32 ssid_len;

            ssid = &request->match_sets[i].ssid;
            ssid_len = ssid->ssid_len;

            if (!ssid_len) {
                WL_ERR("skip broadcast ssid\n");
                continue;
            }
            pfn.auth = cpu_to_le32(WLAN_AUTH_OPEN);
            pfn.wpa_auth = cpu_to_le32(BRCMF_PNO_WPA_AUTH_ANY);
            pfn.wsec = cpu_to_le32(0);
            pfn.infra = cpu_to_le32(1);
            pfn.flags = cpu_to_le32(1 << BRCMF_PNO_HIDDEN_BIT);
            pfn.ssid.SSID_len = cpu_to_le32(ssid_len);
            memcpy(pfn.ssid.SSID, ssid->ssid, ssid_len);
            ret = brcmf_dev_iovar_setbuf(ndev, "pfn_add",
                             &pfn, sizeof(pfn),
                             iovbuf, sizeof(iovbuf));
            WL_SCAN(">>> PNO filter %s for ssid (%s)\n",
                ret == 0 ? "set" : "failed",
                ssid->ssid);
        }
        /* Enable the PNO */
        if (brcmf_dev_intvar_set(ndev, "pfn", 1) < 0) {
            WL_ERR("PNO enable failed!! ret=%d\n", ret);
            return -EINVAL;
        }
    } else {
        return -EINVAL;
    }

    return 0;
}

static int brcmf_cfg80211_sched_scan_stop(struct wiphy *wiphy,
                      struct net_device *ndev)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);

    WL_SCAN("enter\n");
    brcmf_dev_pno_clean(ndev);
    if (cfg->sched_escan)
        brcmf_notify_escan_complete(cfg, ndev, true, true);
    return 0;
}
#endif /* CONFIG_BRCMISCAN */

#ifdef CONFIG_NL80211_TESTMODE
static int brcmf_cfg80211_testmode(struct wiphy *wiphy, void *data, int len)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    struct net_device *ndev = cfg->wdev->netdev;
    struct brcmf_dcmd *dcmd = data;
    struct sk_buff *reply;
    int ret;

    ret = brcmf_netlink_dcmd(ndev, dcmd);
    if (ret == 0) {
        reply = cfg80211_testmode_alloc_reply_skb(wiphy, sizeof(*dcmd));
        nla_put(reply, NL80211_ATTR_TESTDATA, sizeof(*dcmd), dcmd);
        ret = cfg80211_testmode_reply(reply);
    }
    return ret;
}
#endif

static s32 brcmf_configure_opensecurity(struct net_device *ndev, s32 bssidx)
{
    s32 err;

    /* set auth */
    err = brcmf_dev_intvar_set_bsscfg(ndev, "auth", 0, bssidx);
    if (err < 0) {
        WL_ERR("auth error %d\n", err);
        return err;
    }
    /* set wsec */
    err = brcmf_dev_intvar_set_bsscfg(ndev, "wsec", 0, bssidx);
    if (err < 0) {
        WL_ERR("wsec error %d\n", err);
        return err;
    }
    /* set upper-layer auth */
    err = brcmf_dev_intvar_set_bsscfg(ndev, "wpa_auth",
                      WPA_AUTH_NONE, bssidx);
    if (err < 0) {
        WL_ERR("wpa_auth error %d\n", err);
        return err;
    }

    return 0;
}

static bool brcmf_valid_wpa_oui(u8 *oui, bool is_rsn_ie)
{
    if (is_rsn_ie)
        return (memcmp(oui, RSN_OUI, TLV_OUI_LEN) == 0);

    return (memcmp(oui, WPA_OUI, TLV_OUI_LEN) == 0);
}

static s32
brcmf_configure_wpaie(struct net_device *ndev, struct brcmf_vs_tlv *wpa_ie,
             bool is_rsn_ie, s32 bssidx)
{
    u32 auth = 0; /* d11 open authentication */
    u16 count;
    s32 err = 0;
    s32 len = 0;
    u32 i;
    u32 wsec;
    u32 pval = 0;
    u32 gval = 0;
    u32 wpa_auth = 0;
    u32 offset;
    u8 *data;
    u16 rsn_cap;
    u32 wme_bss_disable;

    WL_TRACE("Enter\n");
    if (wpa_ie == NULL)
        goto exit;

    len = wpa_ie->len + TLV_HDR_LEN;
    data = (u8 *)wpa_ie;
    offset = 0;
    if (!is_rsn_ie)
        offset += VS_IE_FIXED_HDR_LEN;
    offset += WPA_IE_VERSION_LEN;

    /* check for multicast cipher suite */
    if (offset + WPA_IE_MIN_OUI_LEN > len) {
        err = -EINVAL;
        WL_ERR("no multicast cipher suite\n");
        goto exit;
    }

    if (!brcmf_valid_wpa_oui(&data[offset], is_rsn_ie)) {
        err = -EINVAL;
        WL_ERR("ivalid OUI\n");
        goto exit;
    }
    offset += TLV_OUI_LEN;

    /* pick up multicast cipher */
    switch (data[offset]) {
    case WPA_CIPHER_NONE:
        gval = 0;
        break;
    case WPA_CIPHER_WEP_40:
    case WPA_CIPHER_WEP_104:
        gval = WEP_ENABLED;
        break;
    case WPA_CIPHER_TKIP:
        gval = TKIP_ENABLED;
        break;
    case WPA_CIPHER_AES_CCM:
        gval = AES_ENABLED;
        break;
    default:
        err = -EINVAL;
        WL_ERR("Invalid multi cast cipher info\n");
        goto exit;
    }

    offset++;
    /* walk thru unicast cipher list and pick up what we recognize */
    count = data[offset] + (data[offset + 1] << 8);
    offset += WPA_IE_SUITE_COUNT_LEN;
    /* Check for unicast suite(s) */
    if (offset + (WPA_IE_MIN_OUI_LEN * count) > len) {
        err = -EINVAL;
        WL_ERR("no unicast cipher suite\n");
        goto exit;
    }
    for (i = 0; i < count; i++) {
        if (!brcmf_valid_wpa_oui(&data[offset], is_rsn_ie)) {
            err = -EINVAL;
            WL_ERR("ivalid OUI\n");
            goto exit;
        }
        offset += TLV_OUI_LEN;
        switch (data[offset]) {
        case WPA_CIPHER_NONE:
            break;
        case WPA_CIPHER_WEP_40:
        case WPA_CIPHER_WEP_104:
            pval |= WEP_ENABLED;
            break;
        case WPA_CIPHER_TKIP:
            pval |= TKIP_ENABLED;
            break;
        case WPA_CIPHER_AES_CCM:
            pval |= AES_ENABLED;
            break;
        default:
            WL_ERR("Ivalid unicast security info\n");
        }
        offset++;
    }
    /* walk thru auth management suite list and pick up what we recognize */
    count = data[offset] + (data[offset + 1] << 8);
    offset += WPA_IE_SUITE_COUNT_LEN;
    /* Check for auth key management suite(s) */
    if (offset + (WPA_IE_MIN_OUI_LEN * count) > len) {
        err = -EINVAL;
        WL_ERR("no auth key mgmt suite\n");
        goto exit;
    }
    for (i = 0; i < count; i++) {
        if (!brcmf_valid_wpa_oui(&data[offset], is_rsn_ie)) {
            err = -EINVAL;
            WL_ERR("ivalid OUI\n");
            goto exit;
        }
        offset += TLV_OUI_LEN;
        switch (data[offset]) {
        case RSN_AKM_NONE:
            WL_TRACE("RSN_AKM_NONE\n");
            wpa_auth |= WPA_AUTH_NONE;
            break;
        case RSN_AKM_UNSPECIFIED:
            WL_TRACE("RSN_AKM_UNSPECIFIED\n");
            is_rsn_ie ? (wpa_auth |= WPA2_AUTH_UNSPECIFIED) :
                    (wpa_auth |= WPA_AUTH_UNSPECIFIED);
            break;
        case RSN_AKM_PSK:
            WL_TRACE("RSN_AKM_PSK\n");
            is_rsn_ie ? (wpa_auth |= WPA2_AUTH_PSK) :
                    (wpa_auth |= WPA_AUTH_PSK);
            break;
        default:
            WL_ERR("Ivalid key mgmt info\n");
        }
        offset++;
    }

    if (is_rsn_ie) {
        wme_bss_disable = 1;
        if ((offset + RSN_CAP_LEN) <= len) {
            rsn_cap = data[offset] + (data[offset + 1] << 8);
            if (rsn_cap & RSN_CAP_PTK_REPLAY_CNTR_MASK)
                wme_bss_disable = 0;
        }
        /* set wme_bss_disable to sync RSN Capabilities */
        err = brcmf_dev_intvar_set_bsscfg(ndev, "wme_bss_disable",
                          wme_bss_disable, bssidx);
        if (err < 0) {
            WL_ERR("wme_bss_disable error %d\n", err);
            goto exit;
        }
    }
    /* FOR WPS , set SES_OW_ENABLED */
    wsec = (pval | gval | SES_OW_ENABLED);

    /* set auth */
    err = brcmf_dev_intvar_set_bsscfg(ndev, "auth", auth, bssidx);
    if (err < 0) {
        WL_ERR("auth error %d\n", err);
        goto exit;
    }
    /* set wsec */
    err = brcmf_dev_intvar_set_bsscfg(ndev, "wsec", wsec, bssidx);
    if (err < 0) {
        WL_ERR("wsec error %d\n", err);
        goto exit;
    }
    /* set upper-layer auth */
    err = brcmf_dev_intvar_set_bsscfg(ndev, "wpa_auth", wpa_auth, bssidx);
    if (err < 0) {
        WL_ERR("wpa_auth error %d\n", err);
        goto exit;
    }

exit:
    return err;
}

static s32
brcmf_parse_vndr_ies(u8 *vndr_ie_buf, u32 vndr_ie_len,
             struct parsed_vndr_ies *vndr_ies)
{
    s32 err = 0;
    struct brcmf_vs_tlv *vndrie;
    struct brcmf_tlv *ie;
    struct parsed_vndr_ie_info *parsed_info;
    s32 remaining_len;

    remaining_len = (s32)vndr_ie_len;
    memset(vndr_ies, 0, sizeof(*vndr_ies));

    ie = (struct brcmf_tlv *)vndr_ie_buf;
    while (ie) {
        if (ie->id != WLAN_EID_VENDOR_SPECIFIC)
            goto next;
        vndrie = (struct brcmf_vs_tlv *)ie;
        /* len should be bigger than OUI length + one */
        if (vndrie->len < (VS_IE_FIXED_HDR_LEN - TLV_HDR_LEN + 1)) {
            WL_ERR("invalid vndr ie. length is too small %d\n",
                vndrie->len);
            goto next;
        }
        /* if wpa or wme ie, do not add ie */
        if (!memcmp(vndrie->oui, (u8 *)WPA_OUI, TLV_OUI_LEN) &&
            ((vndrie->oui_type == WPA_OUI_TYPE) ||
            (vndrie->oui_type == WME_OUI_TYPE))) {
            WL_TRACE("Found WPA/WME oui. Do not add it\n");
            goto next;
        }

        parsed_info = &vndr_ies->ie_info[vndr_ies->count];

        /* save vndr ie information */
        parsed_info->ie_ptr = (char *)vndrie;
        parsed_info->ie_len = vndrie->len + TLV_HDR_LEN;
        memcpy(&parsed_info->vndrie, vndrie, sizeof(*vndrie));

        vndr_ies->count++;

        WL_TRACE("** OUI %02x %02x %02x, type 0x%02x\n",
             parsed_info->vndrie.oui[0],
             parsed_info->vndrie.oui[1],
             parsed_info->vndrie.oui[2],
             parsed_info->vndrie.oui_type);

        if (vndr_ies->count >= MAX_VNDR_IE_NUMBER)
            break;
next:
        remaining_len -= ie->len;
        if (remaining_len <= 2)
            ie = NULL;
        else
            ie = (struct brcmf_tlv *)(((u8 *)ie) + ie->len);
    }
    return err;
}

static u32
brcmf_vndr_ie(u8 *iebuf, s32 pktflag, u8 *ie_ptr, u32 ie_len, s8 *add_del_cmd)
{

    __le32 iecount_le;
    __le32 pktflag_le;

    strncpy(iebuf, add_del_cmd, VNDR_IE_CMD_LEN - 1);
    iebuf[VNDR_IE_CMD_LEN - 1] = '\0';

    iecount_le = cpu_to_le32(1);
    memcpy(&iebuf[VNDR_IE_COUNT_OFFSET], &iecount_le, sizeof(iecount_le));

    pktflag_le = cpu_to_le32(pktflag);
    memcpy(&iebuf[VNDR_IE_PKTFLAG_OFFSET], &pktflag_le, sizeof(pktflag_le));

    memcpy(&iebuf[VNDR_IE_VSIE_OFFSET], ie_ptr, ie_len);

    return ie_len + VNDR_IE_HDR_SIZE;
}

s32
brcmf_set_management_ie(struct brcmf_cfg80211_info *cfg,
            struct net_device *ndev, s32 bssidx, s32 pktflag,
            u8 *vndr_ie_buf, u32 vndr_ie_len)
{
    s32 err = 0;
    u8  *iovar_ie_buf;
    u8  *curr_ie_buf;
    u8  *mgmt_ie_buf = NULL;
    int mgmt_ie_buf_len;
    u32 *mgmt_ie_len = 0;
    u32 del_add_ie_buf_len = 0;
    u32 total_ie_buf_len = 0;
    u32 parsed_ie_buf_len = 0;
    struct parsed_vndr_ies old_vndr_ies;
    struct parsed_vndr_ies new_vndr_ies;
    struct parsed_vndr_ie_info *vndrie_info;
    s32 i;
    u8 *ptr;
    int remained_buf_len;

    WL_TRACE("bssidx %d, pktflag : 0x%02X\n", bssidx, pktflag);
    iovar_ie_buf = kzalloc(WL_EXTRA_BUF_MAX, GFP_KERNEL);
    if (!iovar_ie_buf)
        return -ENOMEM;
    curr_ie_buf = iovar_ie_buf;
    if (test_bit(WL_STATUS_AP_CREATING, &cfg->status) ||
        test_bit(WL_STATUS_AP_CREATED, &cfg->status)) {
        switch (pktflag) {
        case VNDR_IE_PRBRSP_FLAG:
            mgmt_ie_buf = cfg->ap_info->probe_res_ie;
            mgmt_ie_len = &cfg->ap_info->probe_res_ie_len;
            mgmt_ie_buf_len =
                sizeof(cfg->ap_info->probe_res_ie);
            break;
        case VNDR_IE_BEACON_FLAG:
            mgmt_ie_buf = cfg->ap_info->beacon_ie;
            mgmt_ie_len = &cfg->ap_info->beacon_ie_len;
            mgmt_ie_buf_len = sizeof(cfg->ap_info->beacon_ie);
            break;
        default:
            err = -EPERM;
            WL_ERR("not suitable type\n");
            goto exit;
        }
        bssidx = 0;
    } else {
        err = -EPERM;
        WL_ERR("not suitable type\n");
        goto exit;
    }

    if (vndr_ie_len > mgmt_ie_buf_len) {
        err = -ENOMEM;
        WL_ERR("extra IE size too big\n");
        goto exit;
    }

    /* parse and save new vndr_ie in curr_ie_buff before comparing it */
    if (vndr_ie_buf && vndr_ie_len && curr_ie_buf) {
        ptr = curr_ie_buf;
        brcmf_parse_vndr_ies(vndr_ie_buf, vndr_ie_len, &new_vndr_ies);
        for (i = 0; i < new_vndr_ies.count; i++) {
            vndrie_info = &new_vndr_ies.ie_info[i];
            memcpy(ptr + parsed_ie_buf_len, vndrie_info->ie_ptr,
                   vndrie_info->ie_len);
            parsed_ie_buf_len += vndrie_info->ie_len;
        }
    }

    if (mgmt_ie_buf != NULL) {
        if (parsed_ie_buf_len && (parsed_ie_buf_len == *mgmt_ie_len) &&
            (memcmp(mgmt_ie_buf, curr_ie_buf,
                parsed_ie_buf_len) == 0)) {
            WL_TRACE("Previous mgmt IE is equals to current IE");
            goto exit;
        }

        /* parse old vndr_ie */
        brcmf_parse_vndr_ies(mgmt_ie_buf, *mgmt_ie_len, &old_vndr_ies);

        /* make a command to delete old ie */
        for (i = 0; i < old_vndr_ies.count; i++) {
            vndrie_info = &old_vndr_ies.ie_info[i];

            WL_TRACE("DEL ID : %d, Len: %d , OUI:%02x:%02x:%02x\n",
                 vndrie_info->vndrie.id,
                 vndrie_info->vndrie.len,
                 vndrie_info->vndrie.oui[0],
                 vndrie_info->vndrie.oui[1],
                 vndrie_info->vndrie.oui[2]);

            del_add_ie_buf_len = brcmf_vndr_ie(curr_ie_buf, pktflag,
                               vndrie_info->ie_ptr,
                               vndrie_info->ie_len,
                               "del");
            curr_ie_buf += del_add_ie_buf_len;
            total_ie_buf_len += del_add_ie_buf_len;
        }
    }

    *mgmt_ie_len = 0;
    /* Add if there is any extra IE */
    if (mgmt_ie_buf && parsed_ie_buf_len) {
        ptr = mgmt_ie_buf;

        remained_buf_len = mgmt_ie_buf_len;

        /* make a command to add new ie */
        for (i = 0; i < new_vndr_ies.count; i++) {
            vndrie_info = &new_vndr_ies.ie_info[i];

            WL_TRACE("ADDED ID : %d, Len: %d, OUI:%02x:%02x:%02x\n",
                 vndrie_info->vndrie.id,
                 vndrie_info->vndrie.len,
                 vndrie_info->vndrie.oui[0],
                 vndrie_info->vndrie.oui[1],
                 vndrie_info->vndrie.oui[2]);

            del_add_ie_buf_len = brcmf_vndr_ie(curr_ie_buf, pktflag,
                               vndrie_info->ie_ptr,
                               vndrie_info->ie_len,
                               "add");
            /* verify remained buf size before copy data */
            remained_buf_len -= vndrie_info->ie_len;
            if (remained_buf_len < 0) {
                WL_ERR("no space in mgmt_ie_buf: len left %d",
                    remained_buf_len);
                break;
            }

            /* save the parsed IE in wl struct */
            memcpy(ptr + (*mgmt_ie_len), vndrie_info->ie_ptr,
                   vndrie_info->ie_len);
            *mgmt_ie_len += vndrie_info->ie_len;

            curr_ie_buf += del_add_ie_buf_len;
            total_ie_buf_len += del_add_ie_buf_len;
        }
    }
    if (total_ie_buf_len) {
        err  = brcmf_dev_iovar_setbuf_bsscfg(ndev, "vndr_ie",
                             iovar_ie_buf,
                             total_ie_buf_len,
                             cfg->extra_buf,
                             WL_EXTRA_BUF_MAX, bssidx);
        if (err)
            WL_ERR("vndr ie set error : %d\n", err);
    }

exit:
    kfree(iovar_ie_buf);
    return err;
}

static s32
brcmf_cfg80211_start_ap(struct wiphy *wiphy, struct net_device *ndev,
            struct cfg80211_ap_settings *settings)
{
    s32 ie_offset;
    struct brcmf_tlv *ssid_ie;
    struct brcmf_ssid_le ssid_le;
    s32 ioctl_value;
    s32 err = -EPERM;
    struct brcmf_tlv *rsn_ie;
    struct brcmf_vs_tlv *wpa_ie;
    struct brcmf_join_params join_params;
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    s32 bssidx = 0;

    WL_TRACE("channel_type=%d, beacon_interval=%d, dtim_period=%d,\n",
         settings->channel_type, settings->beacon_interval,
         settings->dtim_period);
    WL_TRACE("ssid=%s(%d), auth_type=%d, inactivity_timeout=%d\n",
         settings->ssid, settings->ssid_len, settings->auth_type,
         settings->inactivity_timeout);

    if (!test_bit(WL_STATUS_AP_CREATING, &cfg->status)) {
        WL_ERR("Not in AP creation mode\n");
        return -EPERM;
    }

    memset(&ssid_le, 0, sizeof(ssid_le));
    if (settings->ssid == NULL || settings->ssid_len == 0) {
        ie_offset = DOT11_MGMT_HDR_LEN + DOT11_BCN_PRB_FIXED_LEN;
        ssid_ie = brcmf_parse_tlvs(
                (u8 *)&settings->beacon.head[ie_offset],
                settings->beacon.head_len - ie_offset,
                WLAN_EID_SSID);
        if (!ssid_ie)
            return -EINVAL;

        memcpy(ssid_le.SSID, ssid_ie->data, ssid_ie->len);
        ssid_le.SSID_len = cpu_to_le32(ssid_ie->len);
        WL_TRACE("SSID is (%s) in Head\n", ssid_le.SSID);
    } else {
        memcpy(ssid_le.SSID, settings->ssid, settings->ssid_len);
        ssid_le.SSID_len = cpu_to_le32((u32)settings->ssid_len);
    }

    brcmf_set_mpc(ndev, 0);
    ioctl_value = 1;
    err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_DOWN, &ioctl_value);
    if (err < 0) {
        WL_ERR("BRCMF_C_DOWN error %d\n", err);
        goto exit;
    }
    ioctl_value = 1;
    err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_INFRA, &ioctl_value);
    if (err < 0) {
        WL_ERR("SET INFRA error %d\n", err);
        goto exit;
    }
    ioctl_value = 1;
    err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_AP, &ioctl_value);
    if (err < 0) {
        WL_ERR("setting AP mode failed %d\n", err);
        goto exit;
    }

    /* find the RSN_IE */
    rsn_ie = brcmf_parse_tlvs((u8 *)settings->beacon.tail,
                  settings->beacon.tail_len, WLAN_EID_RSN);

    /* find the WPA_IE */
    wpa_ie = brcmf_find_wpaie((u8 *)settings->beacon.tail,
                  settings->beacon.tail_len);

    kfree(cfg->ap_info->rsn_ie);
    cfg->ap_info->rsn_ie = NULL;
    kfree(cfg->ap_info->wpa_ie);
    cfg->ap_info->wpa_ie = NULL;

    if ((wpa_ie != NULL || rsn_ie != NULL)) {
        WL_TRACE("WPA(2) IE is found\n");
        if (wpa_ie != NULL) {
            /* WPA IE */
            err = brcmf_configure_wpaie(ndev, wpa_ie, false,
                            bssidx);
            if (err < 0)
                goto exit;
            cfg->ap_info->wpa_ie = kmemdup(wpa_ie,
                                wpa_ie->len +
                                TLV_HDR_LEN,
                                GFP_KERNEL);
        } else {
            /* RSN IE */
            err = brcmf_configure_wpaie(ndev,
                (struct brcmf_vs_tlv *)rsn_ie, true, bssidx);
            if (err < 0)
                goto exit;
            cfg->ap_info->rsn_ie = kmemdup(rsn_ie,
                                rsn_ie->len +
                                TLV_HDR_LEN,
                                GFP_KERNEL);
        }
        cfg->ap_info->security_mode = true;
    } else {
        WL_TRACE("No WPA(2) IEs found\n");
        brcmf_configure_opensecurity(ndev, bssidx);
        cfg->ap_info->security_mode = false;
    }
    /* Set Beacon IEs to FW */
    err = brcmf_set_management_ie(cfg, ndev, bssidx,
                      VNDR_IE_BEACON_FLAG,
                      (u8 *)settings->beacon.tail,
                      settings->beacon.tail_len);
    if (err)
        WL_ERR("Set Beacon IE Failed\n");
    else
        WL_TRACE("Applied Vndr IEs for Beacon\n");

    /* Set Probe Response IEs to FW */
    err = brcmf_set_management_ie(cfg, ndev, bssidx,
                      VNDR_IE_PRBRSP_FLAG,
                      (u8 *)settings->beacon.proberesp_ies,
                      settings->beacon.proberesp_ies_len);
    if (err)
        WL_ERR("Set Probe Resp IE Failed\n");
    else
        WL_TRACE("Applied Vndr IEs for Probe Resp\n");

    if (settings->beacon_interval) {
        ioctl_value = settings->beacon_interval;
        err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_BCNPRD,
                      &ioctl_value);
        if (err < 0) {
            WL_ERR("Beacon Interval Set Error, %d\n", err);
            goto exit;
        }
    }
    if (settings->dtim_period) {
        ioctl_value = settings->dtim_period;
        err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_DTIMPRD,
                      &ioctl_value);
        if (err < 0) {
            WL_ERR("DTIM Interval Set Error, %d\n", err);
            goto exit;
        }
    }
    ioctl_value = 1;
    err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_UP, &ioctl_value);
    if (err < 0) {
        WL_ERR("BRCMF_C_UP error (%d)\n", err);
        goto exit;
    }

    memset(&join_params, 0, sizeof(join_params));
    /* join parameters starts with ssid */
    memcpy(&join_params.ssid_le, &ssid_le, sizeof(ssid_le));
    /* create softap */
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_SSID, &join_params,
                  sizeof(join_params));
    if (err < 0) {
        WL_ERR("SET SSID error (%d)\n", err);
        goto exit;
    }
    clear_bit(WL_STATUS_AP_CREATING, &cfg->status);
    set_bit(WL_STATUS_AP_CREATED, &cfg->status);

exit:
    if (err)
        brcmf_set_mpc(ndev, 1);
    return err;
}

static int brcmf_cfg80211_stop_ap(struct wiphy *wiphy, struct net_device *ndev)
{
    struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
    s32 ioctl_value;
    s32 err = -EPERM;

    WL_TRACE("Enter\n");

    if (cfg->conf->mode == WL_MODE_AP) {
        /* Due to most likely deauths outstanding we sleep */
        /* first to make sure they get processed by fw. */
        msleep(400);
        ioctl_value = 0;
        err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_AP, &ioctl_value);
        if (err < 0) {
            WL_ERR("setting AP mode failed %d\n", err);
            goto exit;
        }
        ioctl_value = 0;
        err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_UP, &ioctl_value);
        if (err < 0) {
            WL_ERR("BRCMF_C_UP error %d\n", err);
            goto exit;
        }
        brcmf_set_mpc(ndev, 1);
        clear_bit(WL_STATUS_AP_CREATING, &cfg->status);
        clear_bit(WL_STATUS_AP_CREATED, &cfg->status);
    }
exit:
    return err;
}

static int
brcmf_cfg80211_del_station(struct wiphy *wiphy, struct net_device *ndev,
               u8 *mac)
{
    struct brcmf_scb_val_le scbval;
    s32 err;

    if (!mac)
        return -EFAULT;

    WL_TRACE("Enter %pM\n", mac);

    if (!check_sys_up(wiphy))
        return -EIO;

    memcpy(&scbval.ea, mac, ETH_ALEN);
    scbval.val = cpu_to_le32(WLAN_REASON_DEAUTH_LEAVING);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SCB_DEAUTHENTICATE_FOR_REASON,
                  &scbval, sizeof(scbval));
    if (err)
        WL_ERR("SCB_DEAUTHENTICATE_FOR_REASON failed %d\n", err);

    WL_TRACE("Exit\n");
    return err;
}

static struct cfg80211_ops wl_cfg80211_ops = {
    .change_virtual_intf = brcmf_cfg80211_change_iface,
    .scan = brcmf_cfg80211_scan,
    .set_wiphy_params = brcmf_cfg80211_set_wiphy_params,
    .join_ibss = brcmf_cfg80211_join_ibss,
    .leave_ibss = brcmf_cfg80211_leave_ibss,
    .get_station = brcmf_cfg80211_get_station,
    .set_tx_power = brcmf_cfg80211_set_tx_power,
    .get_tx_power = brcmf_cfg80211_get_tx_power,
    .add_key = brcmf_cfg80211_add_key,
    .del_key = brcmf_cfg80211_del_key,
    .get_key = brcmf_cfg80211_get_key,
    .set_default_key = brcmf_cfg80211_config_default_key,
    .set_default_mgmt_key = brcmf_cfg80211_config_default_mgmt_key,
    .set_power_mgmt = brcmf_cfg80211_set_power_mgmt,
    .set_bitrate_mask = brcmf_cfg80211_set_bitrate_mask,
    .connect = brcmf_cfg80211_connect,
    .disconnect = brcmf_cfg80211_disconnect,
    .suspend = brcmf_cfg80211_suspend,
    .resume = brcmf_cfg80211_resume,
    .set_pmksa = brcmf_cfg80211_set_pmksa,
    .del_pmksa = brcmf_cfg80211_del_pmksa,
    .flush_pmksa = brcmf_cfg80211_flush_pmksa,
    .start_ap = brcmf_cfg80211_start_ap,
    .stop_ap = brcmf_cfg80211_stop_ap,
    .del_station = brcmf_cfg80211_del_station,
#ifndef CONFIG_BRCMISCAN
    /* scheduled scan need e-scan, which is mutual exclusive with i-scan */
    .sched_scan_start = brcmf_cfg80211_sched_scan_start,
    .sched_scan_stop = brcmf_cfg80211_sched_scan_stop,
#endif
#ifdef CONFIG_NL80211_TESTMODE
    .testmode_cmd = brcmf_cfg80211_testmode
#endif
};

static s32 brcmf_mode_to_nl80211_iftype(s32 mode)
{
    s32 err = 0;

    switch (mode) {
    case WL_MODE_BSS:
        return NL80211_IFTYPE_STATION;
    case WL_MODE_IBSS:
        return NL80211_IFTYPE_ADHOC;
    default:
        return NL80211_IFTYPE_UNSPECIFIED;
    }

    return err;
}

static void brcmf_wiphy_pno_params(struct wiphy *wiphy)
{
#ifndef CONFIG_BRCMISCAN
    /* scheduled scan settings */
    wiphy->max_sched_scan_ssids = BRCMF_PNO_MAX_PFN_COUNT;
    wiphy->max_match_sets = BRCMF_PNO_MAX_PFN_COUNT;
    wiphy->max_sched_scan_ie_len = BRCMF_SCAN_IE_LEN_MAX;
    wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
#endif
}

static struct wireless_dev *brcmf_alloc_wdev(struct device *ndev)
{
    struct wireless_dev *wdev;
    s32 err = 0;

    wdev = kzalloc(sizeof(*wdev), GFP_KERNEL);
    if (!wdev)
        return ERR_PTR(-ENOMEM);

    wdev->wiphy = wiphy_new(&wl_cfg80211_ops,
                sizeof(struct brcmf_cfg80211_info));
    if (!wdev->wiphy) {
        WL_ERR("Could not allocate wiphy device\n");
        err = -ENOMEM;
        goto wiphy_new_out;
    }
    set_wiphy_dev(wdev->wiphy, ndev);
    wdev->wiphy->max_scan_ssids = WL_NUM_SCAN_MAX;
    wdev->wiphy->max_num_pmkids = WL_NUM_PMKIDS_MAX;
    wdev->wiphy->interface_modes = BIT(NL80211_IFTYPE_STATION) |
                       BIT(NL80211_IFTYPE_ADHOC) |
                       BIT(NL80211_IFTYPE_AP);
    wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &__wl_band_2ghz;
    wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &__wl_band_5ghz_a;    /* Set
                        * it as 11a by default.
                        * This will be updated with
                        * 11n phy tables in
                        * "ifconfig up"
                        * if phy has 11n capability
                        */
    wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;
    wdev->wiphy->cipher_suites = __wl_cipher_suites;
    wdev->wiphy->n_cipher_suites = ARRAY_SIZE(__wl_cipher_suites);
    wdev->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;  /* enable power
                                 * save mode
                                 * by default
                                 */
    brcmf_wiphy_pno_params(wdev->wiphy);
    err = wiphy_register(wdev->wiphy);
    if (err < 0) {
        WL_ERR("Could not register wiphy device (%d)\n", err);
        goto wiphy_register_out;
    }
    return wdev;

wiphy_register_out:
    wiphy_free(wdev->wiphy);

wiphy_new_out:
    kfree(wdev);

    return ERR_PTR(err);
}

static void brcmf_free_wdev(struct brcmf_cfg80211_info *cfg)
{
    struct wireless_dev *wdev = cfg->wdev;

    if (!wdev) {
        WL_ERR("wdev is invalid\n");
        return;
    }
    wiphy_unregister(wdev->wiphy);
    wiphy_free(wdev->wiphy);
    kfree(wdev);
    cfg->wdev = NULL;
}

static bool brcmf_is_linkup(struct brcmf_cfg80211_info *cfg,
                const struct brcmf_event_msg *e)
{
    u32 event = be32_to_cpu(e->event_type);
    u32 status = be32_to_cpu(e->status);

    if (event == BRCMF_E_SET_SSID && status == BRCMF_E_STATUS_SUCCESS) {
        WL_CONN("Processing set ssid\n");
        cfg->link_up = true;
        return true;
    }

    return false;
}

static bool brcmf_is_linkdown(struct brcmf_cfg80211_info *cfg,
                  const struct brcmf_event_msg *e)
{
    u32 event = be32_to_cpu(e->event_type);
    u16 flags = be16_to_cpu(e->flags);

    if (event == BRCMF_E_LINK && (!(flags & BRCMF_EVENT_MSG_LINK))) {
        WL_CONN("Processing link down\n");
        return true;
    }
    return false;
}

static bool brcmf_is_nonetwork(struct brcmf_cfg80211_info *cfg,
                   const struct brcmf_event_msg *e)
{
    u32 event = be32_to_cpu(e->event_type);
    u32 status = be32_to_cpu(e->status);

    if (event == BRCMF_E_LINK && status == BRCMF_E_STATUS_NO_NETWORKS) {
        WL_CONN("Processing Link %s & no network found\n",
                be16_to_cpu(e->flags) & BRCMF_EVENT_MSG_LINK ?
                "up" : "down");
        return true;
    }

    if (event == BRCMF_E_SET_SSID && status != BRCMF_E_STATUS_SUCCESS) {
        WL_CONN("Processing connecting & no network found\n");
        return true;
    }

    return false;
}

static void brcmf_clear_assoc_ies(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_connect_info *conn_info = cfg_to_conn(cfg);

    kfree(conn_info->req_ie);
    conn_info->req_ie = NULL;
    conn_info->req_ie_len = 0;
    kfree(conn_info->resp_ie);
    conn_info->resp_ie = NULL;
    conn_info->resp_ie_len = 0;
}

static s32 brcmf_get_assoc_ies(struct brcmf_cfg80211_info *cfg)
{
    struct net_device *ndev = cfg_to_ndev(cfg);
    struct brcmf_cfg80211_assoc_ielen_le *assoc_info;
    struct brcmf_cfg80211_connect_info *conn_info = cfg_to_conn(cfg);
    u32 req_len;
    u32 resp_len;
    s32 err = 0;

    brcmf_clear_assoc_ies(cfg);

    err = brcmf_dev_bufvar_get(ndev, "assoc_info", cfg->extra_buf,
                WL_ASSOC_INFO_MAX);
    if (err) {
        WL_ERR("could not get assoc info (%d)\n", err);
        return err;
    }
    assoc_info =
        (struct brcmf_cfg80211_assoc_ielen_le *)cfg->extra_buf;
    req_len = le32_to_cpu(assoc_info->req_len);
    resp_len = le32_to_cpu(assoc_info->resp_len);
    if (req_len) {
        err = brcmf_dev_bufvar_get(ndev, "assoc_req_ies",
                       cfg->extra_buf,
                       WL_ASSOC_INFO_MAX);
        if (err) {
            WL_ERR("could not get assoc req (%d)\n", err);
            return err;
        }
        conn_info->req_ie_len = req_len;
        conn_info->req_ie =
            kmemdup(cfg->extra_buf, conn_info->req_ie_len,
                GFP_KERNEL);
    } else {
        conn_info->req_ie_len = 0;
        conn_info->req_ie = NULL;
    }
    if (resp_len) {
        err = brcmf_dev_bufvar_get(ndev, "assoc_resp_ies",
                       cfg->extra_buf,
                       WL_ASSOC_INFO_MAX);
        if (err) {
            WL_ERR("could not get assoc resp (%d)\n", err);
            return err;
        }
        conn_info->resp_ie_len = resp_len;
        conn_info->resp_ie =
            kmemdup(cfg->extra_buf, conn_info->resp_ie_len,
                GFP_KERNEL);
    } else {
        conn_info->resp_ie_len = 0;
        conn_info->resp_ie = NULL;
    }
    WL_CONN("req len (%d) resp len (%d)\n",
           conn_info->req_ie_len, conn_info->resp_ie_len);

    return err;
}

static s32
brcmf_bss_roaming_done(struct brcmf_cfg80211_info *cfg,
               struct net_device *ndev,
               const struct brcmf_event_msg *e)
{
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_cfg80211_connect_info *conn_info = cfg_to_conn(cfg);
    struct wiphy *wiphy = cfg_to_wiphy(cfg);
    struct ieee80211_channel *notify_channel = NULL;
    struct ieee80211_supported_band *band;
    struct brcmf_bss_info_le *bi;
    u32 freq;
    s32 err = 0;
    u32 target_channel;
    u8 *buf;

    WL_TRACE("Enter\n");

    brcmf_get_assoc_ies(cfg);
    memcpy(profile->bssid, e->addr, ETH_ALEN);
    brcmf_update_bss_info(cfg);

    buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);
    if (buf == NULL) {
        err = -ENOMEM;
        goto done;
    }

    /* data sent to dongle has to be little endian */
    *(__le32 *)buf = cpu_to_le32(WL_BSS_INFO_MAX);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_GET_BSS_INFO, buf, WL_BSS_INFO_MAX);

    if (err)
        goto done;

    bi = (struct brcmf_bss_info_le *)(buf + 4);
    target_channel = bi->ctl_ch ? bi->ctl_ch :
                      CHSPEC_CHANNEL(le16_to_cpu(bi->chanspec));

    if (target_channel <= CH_MAX_2G_CHANNEL)
        band = wiphy->bands[IEEE80211_BAND_2GHZ];
    else
        band = wiphy->bands[IEEE80211_BAND_5GHZ];

    freq = ieee80211_channel_to_frequency(target_channel, band->band);
    notify_channel = ieee80211_get_channel(wiphy, freq);

done:
    kfree(buf);
    cfg80211_roamed(ndev, notify_channel, (u8 *)profile->bssid,
            conn_info->req_ie, conn_info->req_ie_len,
            conn_info->resp_ie, conn_info->resp_ie_len, GFP_KERNEL);
    WL_CONN("Report roaming result\n");

    set_bit(WL_STATUS_CONNECTED, &cfg->status);
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_bss_connect_done(struct brcmf_cfg80211_info *cfg,
               struct net_device *ndev, const struct brcmf_event_msg *e,
               bool completed)
{
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    struct brcmf_cfg80211_connect_info *conn_info = cfg_to_conn(cfg);
    s32 err = 0;

    WL_TRACE("Enter\n");

    if (test_and_clear_bit(WL_STATUS_CONNECTING, &cfg->status)) {
        if (completed) {
            brcmf_get_assoc_ies(cfg);
            memcpy(profile->bssid, e->addr, ETH_ALEN);
            brcmf_update_bss_info(cfg);
        }
        cfg80211_connect_result(ndev,
                    (u8 *)profile->bssid,
                    conn_info->req_ie,
                    conn_info->req_ie_len,
                    conn_info->resp_ie,
                    conn_info->resp_ie_len,
                    completed ? WLAN_STATUS_SUCCESS :
                            WLAN_STATUS_AUTH_TIMEOUT,
                    GFP_KERNEL);
        if (completed)
            set_bit(WL_STATUS_CONNECTED, &cfg->status);
        WL_CONN("Report connect result - connection %s\n",
                completed ? "succeeded" : "failed");
    }
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_notify_connect_status_ap(struct brcmf_cfg80211_info *cfg,
                   struct net_device *ndev,
                   const struct brcmf_event_msg *e, void *data)
{
    s32 err = 0;
    u32 event = be32_to_cpu(e->event_type);
    u32 reason = be32_to_cpu(e->reason);
    u32 len = be32_to_cpu(e->datalen);
    static int generation;

    struct station_info sinfo;

    WL_CONN("event %d, reason %d\n", event, reason);
    memset(&sinfo, 0, sizeof(sinfo));

    sinfo.filled = 0;
    if (((event == BRCMF_E_ASSOC_IND) || (event == BRCMF_E_REASSOC_IND)) &&
        reason == BRCMF_E_STATUS_SUCCESS) {
        sinfo.filled = STATION_INFO_ASSOC_REQ_IES;
        if (!data) {
            WL_ERR("No IEs present in ASSOC/REASSOC_IND");
            return -EINVAL;
        }
        sinfo.assoc_req_ies = data;
        sinfo.assoc_req_ies_len = len;
        generation++;
        sinfo.generation = generation;
        cfg80211_new_sta(ndev, e->addr, &sinfo, GFP_ATOMIC);
    } else if ((event == BRCMF_E_DISASSOC_IND) ||
           (event == BRCMF_E_DEAUTH_IND) ||
           (event == BRCMF_E_DEAUTH)) {
        generation++;
        sinfo.generation = generation;
        cfg80211_del_sta(ndev, e->addr, GFP_ATOMIC);
    }
    return err;
}

static s32
brcmf_notify_connect_status(struct brcmf_cfg80211_info *cfg,
                struct net_device *ndev,
                const struct brcmf_event_msg *e, void *data)
{
    struct brcmf_cfg80211_profile *profile = cfg->profile;
    s32 err = 0;

    if (cfg->conf->mode == WL_MODE_AP) {
        err = brcmf_notify_connect_status_ap(cfg, ndev, e, data);
    } else if (brcmf_is_linkup(cfg, e)) {
        WL_CONN("Linkup\n");
        if (brcmf_is_ibssmode(cfg)) {
            memcpy(profile->bssid, e->addr, ETH_ALEN);
            wl_inform_ibss(cfg, ndev, e->addr);
            cfg80211_ibss_joined(ndev, e->addr, GFP_KERNEL);
            clear_bit(WL_STATUS_CONNECTING, &cfg->status);
            set_bit(WL_STATUS_CONNECTED, &cfg->status);
        } else
            brcmf_bss_connect_done(cfg, ndev, e, true);
    } else if (brcmf_is_linkdown(cfg, e)) {
        WL_CONN("Linkdown\n");
        if (brcmf_is_ibssmode(cfg)) {
            clear_bit(WL_STATUS_CONNECTING, &cfg->status);
            if (test_and_clear_bit(WL_STATUS_CONNECTED,
                &cfg->status))
                brcmf_link_down(cfg);
        } else {
            brcmf_bss_connect_done(cfg, ndev, e, false);
            if (test_and_clear_bit(WL_STATUS_CONNECTED,
                &cfg->status)) {
                cfg80211_disconnected(ndev, 0, NULL, 0,
                    GFP_KERNEL);
                brcmf_link_down(cfg);
            }
        }
        brcmf_init_prof(cfg->profile);
    } else if (brcmf_is_nonetwork(cfg, e)) {
        if (brcmf_is_ibssmode(cfg))
            clear_bit(WL_STATUS_CONNECTING, &cfg->status);
        else
            brcmf_bss_connect_done(cfg, ndev, e, false);
    }

    return err;
}

static s32
brcmf_notify_roaming_status(struct brcmf_cfg80211_info *cfg,
                struct net_device *ndev,
                const struct brcmf_event_msg *e, void *data)
{
    s32 err = 0;
    u32 event = be32_to_cpu(e->event_type);
    u32 status = be32_to_cpu(e->status);

    if (event == BRCMF_E_ROAM && status == BRCMF_E_STATUS_SUCCESS) {
        if (test_bit(WL_STATUS_CONNECTED, &cfg->status))
            brcmf_bss_roaming_done(cfg, ndev, e);
        else
            brcmf_bss_connect_done(cfg, ndev, e, true);
    }

    return err;
}

static s32
brcmf_notify_mic_status(struct brcmf_cfg80211_info *cfg,
            struct net_device *ndev,
            const struct brcmf_event_msg *e, void *data)
{
    u16 flags = be16_to_cpu(e->flags);
    enum nl80211_key_type key_type;

    if (flags & BRCMF_EVENT_MSG_GROUP)
        key_type = NL80211_KEYTYPE_GROUP;
    else
        key_type = NL80211_KEYTYPE_PAIRWISE;

    cfg80211_michael_mic_failure(ndev, (u8 *)&e->addr, key_type, -1,
                     NULL, GFP_KERNEL);

    return 0;
}

static s32
brcmf_notify_scan_status(struct brcmf_cfg80211_info *cfg,
             struct net_device *ndev,
             const struct brcmf_event_msg *e, void *data)
{
    struct brcmf_channel_info_le channel_inform_le;
    struct brcmf_scan_results_le *bss_list_le;
    u32 len = WL_SCAN_BUF_MAX;
    s32 err = 0;
    bool scan_abort = false;
    u32 scan_channel;

    WL_TRACE("Enter\n");

    if (cfg->iscan_on && cfg->iscan_kickstart) {
        WL_TRACE("Exit\n");
        return brcmf_wakeup_iscan(cfg_to_iscan(cfg));
    }

    if (!test_and_clear_bit(WL_STATUS_SCANNING, &cfg->status)) {
        WL_ERR("Scan complete while device not scanning\n");
        scan_abort = true;
        err = -EINVAL;
        goto scan_done_out;
    }

    err = brcmf_exec_dcmd(ndev, BRCMF_C_GET_CHANNEL, &channel_inform_le,
                  sizeof(channel_inform_le));
    if (err) {
        WL_ERR("scan busy (%d)\n", err);
        scan_abort = true;
        goto scan_done_out;
    }
    scan_channel = le32_to_cpu(channel_inform_le.scan_channel);
    if (scan_channel)
        WL_CONN("channel_inform.scan_channel (%d)\n", scan_channel);
    cfg->bss_list = cfg->scan_results;
    bss_list_le = (struct brcmf_scan_results_le *) cfg->bss_list;

    memset(cfg->scan_results, 0, len);
    bss_list_le->buflen = cpu_to_le32(len);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SCAN_RESULTS,
                  cfg->scan_results, len);
    if (err) {
        WL_ERR("%s Scan_results error (%d)\n", ndev->name, err);
        err = -EINVAL;
        scan_abort = true;
        goto scan_done_out;
    }
    cfg->scan_results->buflen = le32_to_cpu(bss_list_le->buflen);
    cfg->scan_results->version = le32_to_cpu(bss_list_le->version);
    cfg->scan_results->count = le32_to_cpu(bss_list_le->count);

    err = brcmf_inform_bss(cfg);
    if (err)
        scan_abort = true;

scan_done_out:
    if (cfg->scan_request) {
        WL_SCAN("calling cfg80211_scan_done\n");
        cfg80211_scan_done(cfg->scan_request, scan_abort);
        brcmf_set_mpc(ndev, 1);
        cfg->scan_request = NULL;
    }

    WL_TRACE("Exit\n");

    return err;
}

static void brcmf_init_conf(struct brcmf_cfg80211_conf *conf)
{
    conf->mode = (u32)-1;
    conf->frag_threshold = (u32)-1;
    conf->rts_threshold = (u32)-1;
    conf->retry_short = (u32)-1;
    conf->retry_long = (u32)-1;
    conf->tx_power = -1;
}

static void brcmf_init_eloop_handler(struct brcmf_cfg80211_event_loop *el)
{
    memset(el, 0, sizeof(*el));
    el->handler[BRCMF_E_SCAN_COMPLETE] = brcmf_notify_scan_status;
    el->handler[BRCMF_E_LINK] = brcmf_notify_connect_status;
    el->handler[BRCMF_E_DEAUTH_IND] = brcmf_notify_connect_status;
    el->handler[BRCMF_E_DEAUTH] = brcmf_notify_connect_status;
    el->handler[BRCMF_E_DISASSOC_IND] = brcmf_notify_connect_status;
    el->handler[BRCMF_E_ASSOC_IND] = brcmf_notify_connect_status;
    el->handler[BRCMF_E_REASSOC_IND] = brcmf_notify_connect_status;
    el->handler[BRCMF_E_ROAM] = brcmf_notify_roaming_status;
    el->handler[BRCMF_E_MIC_ERROR] = brcmf_notify_mic_status;
    el->handler[BRCMF_E_SET_SSID] = brcmf_notify_connect_status;
    el->handler[BRCMF_E_PFN_NET_FOUND] = brcmf_notify_sched_scan_results;
}

static void brcmf_deinit_priv_mem(struct brcmf_cfg80211_info *cfg)
{
    kfree(cfg->scan_results);
    cfg->scan_results = NULL;
    kfree(cfg->bss_info);
    cfg->bss_info = NULL;
    kfree(cfg->conf);
    cfg->conf = NULL;
    kfree(cfg->profile);
    cfg->profile = NULL;
    kfree(cfg->scan_req_int);
    cfg->scan_req_int = NULL;
    kfree(cfg->escan_ioctl_buf);
    cfg->escan_ioctl_buf = NULL;
    kfree(cfg->dcmd_buf);
    cfg->dcmd_buf = NULL;
    kfree(cfg->extra_buf);
    cfg->extra_buf = NULL;
    kfree(cfg->iscan);
    cfg->iscan = NULL;
    kfree(cfg->pmk_list);
    cfg->pmk_list = NULL;
    if (cfg->ap_info) {
        kfree(cfg->ap_info->wpa_ie);
        kfree(cfg->ap_info->rsn_ie);
        kfree(cfg->ap_info);
        cfg->ap_info = NULL;
    }
}

static s32 brcmf_init_priv_mem(struct brcmf_cfg80211_info *cfg)
{
    cfg->scan_results = kzalloc(WL_SCAN_BUF_MAX, GFP_KERNEL);
    if (!cfg->scan_results)
        goto init_priv_mem_out;
    cfg->conf = kzalloc(sizeof(*cfg->conf), GFP_KERNEL);
    if (!cfg->conf)
        goto init_priv_mem_out;
    cfg->profile = kzalloc(sizeof(*cfg->profile), GFP_KERNEL);
    if (!cfg->profile)
        goto init_priv_mem_out;
    cfg->bss_info = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);
    if (!cfg->bss_info)
        goto init_priv_mem_out;
    cfg->scan_req_int = kzalloc(sizeof(*cfg->scan_req_int),
                     GFP_KERNEL);
    if (!cfg->scan_req_int)
        goto init_priv_mem_out;
    cfg->escan_ioctl_buf = kzalloc(BRCMF_DCMD_MEDLEN, GFP_KERNEL);
    if (!cfg->escan_ioctl_buf)
        goto init_priv_mem_out;
    cfg->dcmd_buf = kzalloc(WL_DCMD_LEN_MAX, GFP_KERNEL);
    if (!cfg->dcmd_buf)
        goto init_priv_mem_out;
    cfg->extra_buf = kzalloc(WL_EXTRA_BUF_MAX, GFP_KERNEL);
    if (!cfg->extra_buf)
        goto init_priv_mem_out;
    cfg->iscan = kzalloc(sizeof(*cfg->iscan), GFP_KERNEL);
    if (!cfg->iscan)
        goto init_priv_mem_out;
    cfg->pmk_list = kzalloc(sizeof(*cfg->pmk_list), GFP_KERNEL);
    if (!cfg->pmk_list)
        goto init_priv_mem_out;

    return 0;

init_priv_mem_out:
    brcmf_deinit_priv_mem(cfg);

    return -ENOMEM;
}

/*
* retrieve first queued event from head
*/

static struct brcmf_cfg80211_event_q *brcmf_deq_event(
    struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_event_q *e = NULL;

    spin_lock_irq(&cfg->evt_q_lock);
    if (!list_empty(&cfg->evt_q_list)) {
        e = list_first_entry(&cfg->evt_q_list,
                     struct brcmf_cfg80211_event_q, evt_q_list);
        list_del(&e->evt_q_list);
    }
    spin_unlock_irq(&cfg->evt_q_lock);

    return e;
}

/*
*   push event to tail of the queue
*
*   remark: this function may not sleep as it is called in atomic context.
*/

static s32
brcmf_enq_event(struct brcmf_cfg80211_info *cfg, u32 event,
        const struct brcmf_event_msg *msg, void *data)
{
    struct brcmf_cfg80211_event_q *e;
    s32 err = 0;
    ulong flags;
    u32 data_len;
    u32 total_len;

    total_len = sizeof(struct brcmf_cfg80211_event_q);
    if (data)
        data_len = be32_to_cpu(msg->datalen);
    else
        data_len = 0;
    total_len += data_len;
    e = kzalloc(total_len, GFP_ATOMIC);
    if (!e)
        return -ENOMEM;

    e->etype = event;
    memcpy(&e->emsg, msg, sizeof(struct brcmf_event_msg));
    if (data)
        memcpy(&e->edata, data, data_len);

    spin_lock_irqsave(&cfg->evt_q_lock, flags);
    list_add_tail(&e->evt_q_list, &cfg->evt_q_list);
    spin_unlock_irqrestore(&cfg->evt_q_lock, flags);

    return err;
}

static void brcmf_put_event(struct brcmf_cfg80211_event_q *e)
{
    kfree(e);
}

static void brcmf_cfg80211_event_handler(struct work_struct *work)
{
    struct brcmf_cfg80211_info *cfg =
            container_of(work, struct brcmf_cfg80211_info,
                     event_work);
    struct brcmf_cfg80211_event_q *e;

    e = brcmf_deq_event(cfg);
    if (unlikely(!e)) {
        WL_ERR("event queue empty...\n");
        return;
    }

    do {
        WL_INFO("event type (%d)\n", e->etype);
        if (cfg->el.handler[e->etype])
            cfg->el.handler[e->etype](cfg,
                               cfg_to_ndev(cfg),
                               &e->emsg, e->edata);
        else
            WL_INFO("Unknown Event (%d): ignoring\n", e->etype);
        brcmf_put_event(e);
    } while ((e = brcmf_deq_event(cfg)));

}

static void brcmf_init_eq(struct brcmf_cfg80211_info *cfg)
{
    spin_lock_init(&cfg->evt_q_lock);
    INIT_LIST_HEAD(&cfg->evt_q_list);
}

static void brcmf_flush_eq(struct brcmf_cfg80211_info *cfg)
{
    struct brcmf_cfg80211_event_q *e;

    spin_lock_irq(&cfg->evt_q_lock);
    while (!list_empty(&cfg->evt_q_list)) {
        e = list_first_entry(&cfg->evt_q_list,
                     struct brcmf_cfg80211_event_q, evt_q_list);
        list_del(&e->evt_q_list);
        kfree(e);
    }
    spin_unlock_irq(&cfg->evt_q_lock);
}

static s32 wl_init_priv(struct brcmf_cfg80211_info *cfg)
{
    s32 err = 0;

    cfg->scan_request = NULL;
    cfg->pwr_save = true;
#ifdef CONFIG_BRCMISCAN
    cfg->iscan_on = true;   /* iscan on & off switch.
                 we enable iscan per default */
    cfg->escan_on = false;  /* escan on & off switch.
                 we disable escan per default */
#else
    cfg->iscan_on = false;  /* iscan on & off switch.
                 we disable iscan per default */
    cfg->escan_on = true;   /* escan on & off switch.
                 we enable escan per default */
#endif
    cfg->roam_on = true;    /* roam on & off switch.
                 we enable roam per default */

    cfg->iscan_kickstart = false;
    cfg->active_scan = true;    /* we do active scan for
                 specific scan per default */
    cfg->dongle_up = false; /* dongle is not up yet */
    brcmf_init_eq(cfg);
    err = brcmf_init_priv_mem(cfg);
    if (err)
        return err;
    INIT_WORK(&cfg->event_work, brcmf_cfg80211_event_handler);
    brcmf_init_eloop_handler(&cfg->el);
    mutex_init(&cfg->usr_sync);
    err = brcmf_init_iscan(cfg);
    if (err)
        return err;
    brcmf_init_escan(cfg);
    brcmf_init_conf(cfg->conf);
    brcmf_init_prof(cfg->profile);
    brcmf_link_down(cfg);

    return err;
}

static void wl_deinit_priv(struct brcmf_cfg80211_info *cfg)
{
    cancel_work_sync(&cfg->event_work);
    cfg->dongle_up = false; /* dongle down */
    brcmf_flush_eq(cfg);
    brcmf_link_down(cfg);
    brcmf_abort_scanning(cfg);
    brcmf_deinit_priv_mem(cfg);
}

struct brcmf_cfg80211_info *brcmf_cfg80211_attach(struct net_device *ndev,
                          struct device *busdev,
                          struct brcmf_pub *drvr)
{
    struct wireless_dev *wdev;
    struct brcmf_cfg80211_info *cfg;
    s32 err = 0;

    if (!ndev) {
        WL_ERR("ndev is invalid\n");
        return NULL;
    }

    wdev = brcmf_alloc_wdev(busdev);
    if (IS_ERR(wdev)) {
        return NULL;
    }

    wdev->iftype = brcmf_mode_to_nl80211_iftype(WL_MODE_BSS);
    cfg = wdev_to_cfg(wdev);
    cfg->wdev = wdev;
    cfg->pub = drvr;
    ndev->ieee80211_ptr = wdev;
    SET_NETDEV_DEV(ndev, wiphy_dev(wdev->wiphy));
    wdev->netdev = ndev;
    err = wl_init_priv(cfg);
    if (err) {
        WL_ERR("Failed to init iwm_priv (%d)\n", err);
        goto cfg80211_attach_out;
    }

    return cfg;

cfg80211_attach_out:
    brcmf_free_wdev(cfg);
    return NULL;
}

void brcmf_cfg80211_detach(struct brcmf_cfg80211_info *cfg)
{
    wl_deinit_priv(cfg);
    brcmf_free_wdev(cfg);
}

void
brcmf_cfg80211_event(struct net_device *ndev,
          const struct brcmf_event_msg *e, void *data)
{
    u32 event_type = be32_to_cpu(e->event_type);
    struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);

    if (!brcmf_enq_event(cfg, event_type, e, data))
        schedule_work(&cfg->event_work);
}

static s32 brcmf_dongle_eventmsg(struct net_device *ndev)
{
    /* Room for "event_msgs" + '\0' + bitvec */
    s8 iovbuf[BRCMF_EVENTING_MASK_LEN + 12];
    s8 eventmask[BRCMF_EVENTING_MASK_LEN];
    s32 err = 0;

    WL_TRACE("Enter\n");

    /* Setup event_msgs */
    brcmf_c_mkiovar("event_msgs", eventmask, BRCMF_EVENTING_MASK_LEN,
            iovbuf, sizeof(iovbuf));
    err = brcmf_exec_dcmd(ndev, BRCMF_C_GET_VAR, iovbuf, sizeof(iovbuf));
    if (err) {
        WL_ERR("Get event_msgs error (%d)\n", err);
        goto dongle_eventmsg_out;
    }
    memcpy(eventmask, iovbuf, BRCMF_EVENTING_MASK_LEN);

    setbit(eventmask, BRCMF_E_SET_SSID);
    setbit(eventmask, BRCMF_E_ROAM);
    setbit(eventmask, BRCMF_E_PRUNE);
    setbit(eventmask, BRCMF_E_AUTH);
    setbit(eventmask, BRCMF_E_REASSOC);
    setbit(eventmask, BRCMF_E_REASSOC_IND);
    setbit(eventmask, BRCMF_E_DEAUTH_IND);
    setbit(eventmask, BRCMF_E_DISASSOC_IND);
    setbit(eventmask, BRCMF_E_DISASSOC);
    setbit(eventmask, BRCMF_E_JOIN);
    setbit(eventmask, BRCMF_E_ASSOC_IND);
    setbit(eventmask, BRCMF_E_PSK_SUP);
    setbit(eventmask, BRCMF_E_LINK);
    setbit(eventmask, BRCMF_E_NDIS_LINK);
    setbit(eventmask, BRCMF_E_MIC_ERROR);
    setbit(eventmask, BRCMF_E_PMKID_CACHE);
    setbit(eventmask, BRCMF_E_TXFAIL);
    setbit(eventmask, BRCMF_E_JOIN_START);
    setbit(eventmask, BRCMF_E_SCAN_COMPLETE);
    setbit(eventmask, BRCMF_E_ESCAN_RESULT);
    setbit(eventmask, BRCMF_E_PFN_NET_FOUND);

    brcmf_c_mkiovar("event_msgs", eventmask, BRCMF_EVENTING_MASK_LEN,
            iovbuf, sizeof(iovbuf));
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_VAR, iovbuf, sizeof(iovbuf));
    if (err) {
        WL_ERR("Set event_msgs error (%d)\n", err);
        goto dongle_eventmsg_out;
    }

dongle_eventmsg_out:
    WL_TRACE("Exit\n");
    return err;
}

static s32
brcmf_dongle_roam(struct net_device *ndev, u32 roamvar, u32 bcn_timeout)
{
    s8 iovbuf[32];
    s32 err = 0;
    __le32 roamtrigger[2];
    __le32 roam_delta[2];
    __le32 bcn_to_le;
    __le32 roamvar_le;

    /*
     * Setup timeout if Beacons are lost and roam is
     * off to report link down
     */
    if (roamvar) {
        bcn_to_le = cpu_to_le32(bcn_timeout);
        brcmf_c_mkiovar("bcn_timeout", (char *)&bcn_to_le,
            sizeof(bcn_to_le), iovbuf, sizeof(iovbuf));
        err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_VAR,
                   iovbuf, sizeof(iovbuf));
        if (err) {
            WL_ERR("bcn_timeout error (%d)\n", err);
            goto dongle_rom_out;
        }
    }

    /*
     * Enable/Disable built-in roaming to allow supplicant
     * to take care of roaming
     */
    WL_INFO("Internal Roaming = %s\n", roamvar ? "Off" : "On");
    roamvar_le = cpu_to_le32(roamvar);
    brcmf_c_mkiovar("roam_off", (char *)&roamvar_le,
                sizeof(roamvar_le), iovbuf, sizeof(iovbuf));
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_VAR, iovbuf, sizeof(iovbuf));
    if (err) {
        WL_ERR("roam_off error (%d)\n", err);
        goto dongle_rom_out;
    }

    roamtrigger[0] = cpu_to_le32(WL_ROAM_TRIGGER_LEVEL);
    roamtrigger[1] = cpu_to_le32(BRCM_BAND_ALL);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_ROAM_TRIGGER,
            (void *)roamtrigger, sizeof(roamtrigger));
    if (err) {
        WL_ERR("WLC_SET_ROAM_TRIGGER error (%d)\n", err);
        goto dongle_rom_out;
    }

    roam_delta[0] = cpu_to_le32(WL_ROAM_DELTA);
    roam_delta[1] = cpu_to_le32(BRCM_BAND_ALL);
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_ROAM_DELTA,
                (void *)roam_delta, sizeof(roam_delta));
    if (err) {
        WL_ERR("WLC_SET_ROAM_DELTA error (%d)\n", err);
        goto dongle_rom_out;
    }

dongle_rom_out:
    return err;
}

static s32
brcmf_dongle_scantime(struct net_device *ndev, s32 scan_assoc_time,
              s32 scan_unassoc_time, s32 scan_passive_time)
{
    s32 err = 0;
    __le32 scan_assoc_tm_le = cpu_to_le32(scan_assoc_time);
    __le32 scan_unassoc_tm_le = cpu_to_le32(scan_unassoc_time);
    __le32 scan_passive_tm_le = cpu_to_le32(scan_passive_time);

    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_SCAN_CHANNEL_TIME,
               &scan_assoc_tm_le, sizeof(scan_assoc_tm_le));
    if (err) {
        if (err == -EOPNOTSUPP)
            WL_INFO("Scan assoc time is not supported\n");
        else
            WL_ERR("Scan assoc time error (%d)\n", err);
        goto dongle_scantime_out;
    }
    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_SCAN_UNASSOC_TIME,
               &scan_unassoc_tm_le, sizeof(scan_unassoc_tm_le));
    if (err) {
        if (err == -EOPNOTSUPP)
            WL_INFO("Scan unassoc time is not supported\n");
        else
            WL_ERR("Scan unassoc time error (%d)\n", err);
        goto dongle_scantime_out;
    }

    err = brcmf_exec_dcmd(ndev, BRCMF_C_SET_SCAN_PASSIVE_TIME,
               &scan_passive_tm_le, sizeof(scan_passive_tm_le));
    if (err) {
        if (err == -EOPNOTSUPP)
            WL_INFO("Scan passive time is not supported\n");
        else
            WL_ERR("Scan passive time error (%d)\n", err);
        goto dongle_scantime_out;
    }

dongle_scantime_out:
    return err;
}

static s32 wl_update_wiphybands(struct brcmf_cfg80211_info *cfg)
{
    struct wiphy *wiphy;
    s32 phy_list;
    s8 phy;
    s32 err = 0;

    err = brcmf_exec_dcmd(cfg_to_ndev(cfg), BRCM_GET_PHYLIST,
                  &phy_list, sizeof(phy_list));
    if (err) {
        WL_ERR("error (%d)\n", err);
        return err;
    }

    phy = ((char *)&phy_list)[0];
    WL_INFO("%c phy\n", phy);
    if (phy == 'n' || phy == 'a') {
        wiphy = cfg_to_wiphy(cfg);
        wiphy->bands[IEEE80211_BAND_5GHZ] = &__wl_band_5ghz_n;
    }

    return err;
}

static s32 brcmf_dongle_probecap(struct brcmf_cfg80211_info *cfg)
{
    return wl_update_wiphybands(cfg);
}

static s32 brcmf_config_dongle(struct brcmf_cfg80211_info *cfg)
{
    struct net_device *ndev;
    struct wireless_dev *wdev;
    s32 power_mode;
    s32 err = 0;

    if (cfg->dongle_up)
        return err;

    ndev = cfg_to_ndev(cfg);
    wdev = ndev->ieee80211_ptr;

    brcmf_dongle_scantime(ndev, WL_SCAN_CHANNEL_TIME,
            WL_SCAN_UNASSOC_TIME, WL_SCAN_PASSIVE_TIME);

    err = brcmf_dongle_eventmsg(ndev);
    if (err)
        goto default_conf_out;

    power_mode = cfg->pwr_save ? PM_FAST : PM_OFF;
    err = brcmf_exec_dcmd_u32(ndev, BRCMF_C_SET_PM, &power_mode);
    if (err)
        goto default_conf_out;
    WL_INFO("power save set to %s\n",
        (power_mode ? "enabled" : "disabled"));

    err = brcmf_dongle_roam(ndev, (cfg->roam_on ? 0 : 1),
                WL_BEACON_TIMEOUT);
    if (err)
        goto default_conf_out;
    err = brcmf_cfg80211_change_iface(wdev->wiphy, ndev, wdev->iftype,
                      NULL, NULL);
    if (err && err != -EINPROGRESS)
        goto default_conf_out;
    err = brcmf_dongle_probecap(cfg);
    if (err)
        goto default_conf_out;

    /* -EINPROGRESS: Call commit handler */

default_conf_out:

    cfg->dongle_up = true;

    return err;

}

static int brcmf_debugfs_add_netdev_params(struct brcmf_cfg80211_info *cfg)
{
    char buf[10+IFNAMSIZ];
    struct dentry *fd;
    s32 err = 0;

    sprintf(buf, "netdev:%s", cfg_to_ndev(cfg)->name);
    cfg->debugfsdir = debugfs_create_dir(buf,
                    cfg_to_wiphy(cfg)->debugfsdir);

    fd = debugfs_create_u16("beacon_int", S_IRUGO, cfg->debugfsdir,
        (u16 *)&cfg->profile->beacon_interval);
    if (!fd) {
        err = -ENOMEM;
        goto err_out;
    }

    fd = debugfs_create_u8("dtim_period", S_IRUGO, cfg->debugfsdir,
        (u8 *)&cfg->profile->dtim_period);
    if (!fd) {
        err = -ENOMEM;
        goto err_out;
    }

err_out:
    return err;
}

static void brcmf_debugfs_remove_netdev(struct brcmf_cfg80211_info *cfg)
{
    debugfs_remove_recursive(cfg->debugfsdir);
    cfg->debugfsdir = NULL;
}

static s32 __brcmf_cfg80211_up(struct brcmf_cfg80211_info *cfg)
{
    s32 err = 0;

    set_bit(WL_STATUS_READY, &cfg->status);

    brcmf_debugfs_add_netdev_params(cfg);

    err = brcmf_config_dongle(cfg);
    if (err)
        return err;

    brcmf_invoke_iscan(cfg);

    return err;
}

static s32 __brcmf_cfg80211_down(struct brcmf_cfg80211_info *cfg)
{
    /*
     * While going down, if associated with AP disassociate
     * from AP to save power
     */
    if ((test_bit(WL_STATUS_CONNECTED, &cfg->status) ||
         test_bit(WL_STATUS_CONNECTING, &cfg->status)) &&
         test_bit(WL_STATUS_READY, &cfg->status)) {
        WL_INFO("Disassociating from AP");
        brcmf_link_down(cfg);

        /* Make sure WPA_Supplicant receives all the event
           generated due to DISASSOC call to the fw to keep
           the state fw and WPA_Supplicant state consistent
         */
        brcmf_delay(500);
    }

    brcmf_abort_scanning(cfg);
    clear_bit(WL_STATUS_READY, &cfg->status);

    brcmf_debugfs_remove_netdev(cfg);

    return 0;
}

s32 brcmf_cfg80211_up(struct brcmf_cfg80211_info *cfg)
{
    s32 err = 0;

    mutex_lock(&cfg->usr_sync);
    err = __brcmf_cfg80211_up(cfg);
    mutex_unlock(&cfg->usr_sync);

    return err;
}

s32 brcmf_cfg80211_down(struct brcmf_cfg80211_info *cfg)
{
    s32 err = 0;

    mutex_lock(&cfg->usr_sync);
    err = __brcmf_cfg80211_down(cfg);
    mutex_unlock(&cfg->usr_sync);

    return err;
}