/*
 * 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/etherdevice.h>
#include <net/cfg80211.h>
#include <net/netlink.h>

#include <brcmu_utils.h>
#include <defs.h>
#include <brcmu_wifi.h>
#include "dhd.h"
#include "dhd_dbg.h"
#include "wl_cfg80211.h"
#include "fwil.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 BRCMF_IFACE_MAX_CNT             2

#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 bool check_vif_up(struct brcmf_cfg80211_vif *vif)
{
        if (!test_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state)) {
                brcmf_dbg(INFO, "device is not ready : status (%lu)\n",
                          vif->sme_state);
                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;
}

static u16 channel_to_chanspec(struct ieee80211_channel *ch)
{
        u16 chanspec;

        chanspec = ieee80211_frequency_to_channel(ch->center_freq);
        chanspec &= WL_CHANSPEC_CHAN_MASK;

        if (ch->band == IEEE80211_BAND_2GHZ)
                chanspec |= WL_CHANSPEC_BAND_2G;
        else
                chanspec |= WL_CHANSPEC_BAND_5G;

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

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 net_device *ndev, struct brcmf_wsec_key *key)
{
        int err;
        struct brcmf_wsec_key_le key_le;

        convert_key_from_CPU(key, &key_le);

        brcmf_netdev_wait_pend8021x(ndev);

        err = brcmf_fil_bsscfg_data_set(netdev_priv(ndev), "wsec_key", &key_le,
                                        sizeof(key_le));

        if (err)
                brcmf_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_if *ifp = netdev_priv(ndev);
        struct brcmf_cfg80211_vif *vif = ifp->vif;
        s32 infra = 0;
        s32 ap = 0;
        s32 err = 0;

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

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

        if (ap) {
                set_bit(BRCMF_VIF_STATUS_AP_CREATING, &vif->sme_state);
                brcmf_dbg(INFO, "IF Type = AP\n");
        } else {
                err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_INFRA, infra);
                if (err) {
                        brcmf_err("WLC_SET_INFRA error (%d)\n", err);
                        err = -EAGAIN;
                        goto done;
                }
                brcmf_dbg(INFO, "IF Type = %s\n", (vif->mode == WL_MODE_IBSS) ?
                          "Adhoc" : "Infra");
        }
        ndev->ieee80211_ptr->iftype = type;

done:
        brcmf_dbg(TRACE, "Exit\n");

        return err;
}

static void brcmf_set_mpc(struct net_device *ndev, int mpc)
{
        struct brcmf_if *ifp = netdev_priv(ndev);
        s32 err = 0;

        if (check_vif_up(ifp->vif)) {
                err = brcmf_fil_iovar_int_set(ifp, "mpc", mpc);
                if (err) {
                        brcmf_err("fail to set mpc\n");
                        return;
                }
                brcmf_dbg(INFO, "MPC : %d\n", mpc);
        }
}

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;
        char *ptr;
        struct brcmf_ssid_le ssid_le;

        memset(params_le->bssid, 0xFF, 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 */
        brcmf_dbg(SCAN, "### List of channelspecs to scan ### %d\n",
                  n_channels);
        if (n_channels > 0) {
                for (i = 0; i < n_channels; i++) {
                        chanspec = channel_to_chanspec(request->channels[i]);
                        brcmf_dbg(SCAN, "Chan : %d, Channel spec: %x\n",
                                  request->channels[i]->hw_value, chanspec);
                        params_le->channel_list[i] = cpu_to_le16(chanspec);
                }
        } else {
                brcmf_dbg(SCAN, "Scanning all channels\n");
        }
        /* Copy ssid array if applicable */
        brcmf_dbg(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)
                                brcmf_dbg(SCAN, "%d: Broadcast scan\n", i);
                        else
                                brcmf_dbg(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 {
                brcmf_dbg(SCAN, "Broadcast scan %p\n", request->ssids);
                if ((request->ssids) && request->ssids->ssid_len) {
                        brcmf_dbg(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;

        brcmf_dbg(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 */
                brcmf_dbg(SCAN, "ABORT scan in firmware\n");
                memset(&params_le, 0, sizeof(params_le));
                memset(params_le.bssid, 0xFF, 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_fil_cmd_data_set(netdev_priv(ndev), BRCMF_C_SCAN,
                                             &params_le, sizeof(params_le));
                if (err)
                        brcmf_err("Scan abort  failed\n");
        }
        /*
         * e-scan can be initiated by scheduled scan
         * which takes precedence.
         */
        if (cfg->sched_escan) {
                brcmf_dbg(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) {
                brcmf_dbg(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(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
                brcmf_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;

        brcmf_dbg(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_fil_iovar_data_set(netdev_priv(ndev), "escan",
                                       params, params_size);
        if (err) {
                if (err == -EBUSY)
                        brcmf_dbg(INFO, "system busy : escan canceled\n");
                else
                        brcmf_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;
        u32 passive_scan;
        struct brcmf_scan_results *results;

        brcmf_dbg(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 : 1;
        err = brcmf_fil_cmd_int_set(netdev_priv(ndev), BRCMF_C_SET_PASSIVE_SCAN,
                                    passive_scan);
        if (err) {
                brcmf_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_if *ifp = netdev_priv(ndev);
        struct brcmf_cfg80211_info *cfg = ndev_to_cfg(ndev);
        struct cfg80211_ssid *ssids;
        struct brcmf_cfg80211_scan_req *sr = &cfg->scan_req_int;
        u32 passive_scan;
        bool escan_req;
        bool spec_scan;
        s32 err;
        u32 SSID_len;

        brcmf_dbg(SCAN, "START ESCAN\n");

        if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
                brcmf_err("Scanning already: status (%lu)\n", cfg->scan_status);
                return -EAGAIN;
        }
        if (test_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status)) {
                brcmf_err("Scanning being aborted: status (%lu)\n",
                          cfg->scan_status);
                return -EAGAIN;
        }
        if (test_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state)) {
                brcmf_err("Connecting: status (%lu)\n", ifp->vif->sme_state);
                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(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
        if (escan_req) {
                err = brcmf_do_escan(cfg, wiphy, ndev, request);
                if (err)
                        goto scan_out;
        } else {
                brcmf_dbg(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
                        brcmf_dbg(SCAN, "Broadcast scan\n");

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

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

        return 0;

scan_out:
        clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_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;
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");

        if (!check_vif_up(container_of(request->wdev,
                                       struct brcmf_cfg80211_vif, wdev)))
                return -EIO;

        err = brcmf_cfg80211_escan(wiphy, ndev, request, NULL);

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

        brcmf_dbg(TRACE, "Exit\n");
        return err;
}

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

        err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "rtsthresh",
                                      rts_threshold);
        if (err)
                brcmf_err("Error (%d)\n", err);

        return err;
}

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

        err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "fragthresh",
                                      frag_threshold);
        if (err)
                brcmf_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 ? BRCMF_C_SET_LRL : BRCMF_C_SET_SRL);

        err = brcmf_fil_cmd_int_set(netdev_priv(ndev), cmd, retry);
        if (err) {
                brcmf_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);
        struct brcmf_if *ifp = netdev_priv(ndev);
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                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:
        brcmf_dbg(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);

                brcmf_dbg(CONN, "channel %d, chanspec %#X\n", ch, chanspec);
        }
}

static void brcmf_link_down(struct brcmf_cfg80211_vif *vif)
{
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");

        if (test_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state)) {
                brcmf_dbg(INFO, "Call WLC_DISASSOC to stop excess roaming\n ");
                err = brcmf_fil_cmd_data_set(vif->ifp,
                                             BRCMF_C_DISASSOC, NULL, 0);
                if (err)
                        brcmf_err("WLC_DISASSOC failed (%d)\n", err);
                clear_bit(BRCMF_VIF_STATUS_CONNECTED, &vif->sme_state);
        }
        clear_bit(BRCMF_VIF_STATUS_CONNECTING, &vif->sme_state);
        brcmf_dbg(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_if *ifp = netdev_priv(ndev);
        struct brcmf_cfg80211_profile *profile = &ifp->vif->profile;
        struct brcmf_join_params join_params;
        size_t join_params_size = 0;
        s32 err = 0;
        s32 wsec = 0;
        s32 bcnprd;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

        if (params->ssid)
                brcmf_dbg(CONN, "SSID: %s\n", params->ssid);
        else {

                brcmf_dbg(CONN, "SSID: NULL, Not supported\n");
                return -EOPNOTSUPP;
        }

        set_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);

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

        if (params->chandef.chan)
                brcmf_dbg(CONN, "channel: %d\n",
                          params->chandef.chan->center_freq);
        else
                brcmf_dbg(CONN, "no channel specified\n");

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

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

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

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

        if (params->privacy)
                brcmf_dbg(CONN, "privacy required\n");
        else
                brcmf_dbg(CONN, "no privacy required\n");

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

        err = brcmf_fil_iovar_int_set(ifp, "wsec", wsec);
        if (err) {
                brcmf_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_fil_cmd_int_set(ifp, BRCMF_C_SET_BCNPRD, bcnprd);
        if (err) {
                brcmf_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 {
                memset(join_params.params_le.bssid, 0xFF, ETH_ALEN);
                memset(profile->bssid, 0, ETH_ALEN);
        }

        /* Channel */
        if (params->chandef.chan) {
                u32 target_channel;

                cfg->channel =
                        ieee80211_frequency_to_channel(
                                params->chandef.chan->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_fil_cmd_int_set(ifp, BRCMF_C_SET_CHANNEL,
                                            target_channel);
                if (err) {
                        brcmf_err("WLC_SET_CHANNEL failed (%d)\n", err);
                        goto done;
                }
        } else
                cfg->channel = 0;

        cfg->ibss_starter = false;


        err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID,
                                     &join_params, join_params_size);
        if (err) {
                brcmf_err("WLC_SET_SSID failed (%d)\n", err);
                goto done;
        }

done:
        if (err)
                clear_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);
        brcmf_dbg(TRACE, "Exit\n");
        return err;
}

static s32
brcmf_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *ndev)
{
        struct brcmf_if *ifp = netdev_priv(ndev);
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

        brcmf_link_down(ifp->vif);

        brcmf_dbg(TRACE, "Exit\n");

        return err;
}

static s32 brcmf_set_wpa_version(struct net_device *ndev,
                                 struct cfg80211_connect_params *sme)
{
        struct brcmf_cfg80211_profile *profile = ndev_to_prof(ndev);
        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;
        brcmf_dbg(CONN, "setting wpa_auth to 0x%0x\n", val);
        err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "wpa_auth", val);
        if (err) {
                brcmf_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_profile *profile = ndev_to_prof(ndev);
        struct brcmf_cfg80211_security *sec;
        s32 val = 0;
        s32 err = 0;

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

        err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "auth", val);
        if (err) {
                brcmf_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_profile *profile = ndev_to_prof(ndev);
        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:
                        brcmf_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:
                        brcmf_err("invalid cipher group (%d)\n",
                                  sme->crypto.cipher_group);
                        return -EINVAL;
                }
        }

        brcmf_dbg(CONN, "pval (%d) gval (%d)\n", pval, gval);
        err = brcmf_fil_iovar_int_set(netdev_priv(ndev), "wsec", pval | gval);
        if (err) {
                brcmf_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_profile *profile = ndev_to_prof(ndev);
        struct brcmf_cfg80211_security *sec;
        s32 val = 0;
        s32 err = 0;

        if (sme->crypto.n_akm_suites) {
                err = brcmf_fil_iovar_int_get(netdev_priv(ndev),
                                              "wpa_auth", &val);
                if (err) {
                        brcmf_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:
                                brcmf_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:
                                brcmf_err("invalid cipher group (%d)\n",
                                          sme->crypto.cipher_group);
                                return -EINVAL;
                        }
                }

                brcmf_dbg(CONN, "setting wpa_auth to %d\n", val);
                err = brcmf_fil_iovar_int_set(netdev_priv(ndev),
                                              "wpa_auth", val);
                if (err) {
                        brcmf_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_profile *profile = ndev_to_prof(ndev);
        struct brcmf_cfg80211_security *sec;
        struct brcmf_wsec_key key;
        s32 val;
        s32 err = 0;

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

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

        sec = &profile->sec;
        brcmf_dbg(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)) {
                brcmf_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:
                brcmf_err("Invalid algorithm (%d)\n",
                          sme->crypto.ciphers_pairwise[0]);
                return -EINVAL;
        }
        /* Set the new key/index */
        brcmf_dbg(CONN, "key length (%d) key index (%d) algo (%d)\n",
                  key.len, key.index, key.algo);
        brcmf_dbg(CONN, "key \"%s\"\n", key.data);
        err = send_key_to_dongle(ndev, &key);
        if (err)
                return err;

        if (sec->auth_type == NL80211_AUTHTYPE_SHARED_KEY) {
                brcmf_dbg(CONN, "set auth_type to shared key\n");
                val = WL_AUTH_SHARED_KEY;       /* shared key */
                err = brcmf_fil_bsscfg_int_set(netdev_priv(ndev), "auth", val);
                if (err)
                        brcmf_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_if *ifp = netdev_priv(ndev);
        struct brcmf_cfg80211_profile *profile = &ifp->vif->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;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

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

        set_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);

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

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

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

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

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

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

        err = brcmf_set_sharedkey(ndev, sme);
        if (err) {
                brcmf_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);

        memset(join_params.params_le.bssid, 0xFF, ETH_ALEN);

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

        brcmf_ch_to_chanspec(cfg->channel,
                             &join_params, &join_params_size);
        err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID,
                                     &join_params, join_params_size);
        if (err)
                brcmf_err("WLC_SET_SSID failed (%d)\n", err);

done:
        if (err)
                clear_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);
        brcmf_dbg(TRACE, "Exit\n");
        return err;
}

static s32
brcmf_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *ndev,
                       u16 reason_code)
{
        struct brcmf_if *ifp = netdev_priv(ndev);
        struct brcmf_cfg80211_profile *profile = &ifp->vif->profile;
        struct brcmf_scb_val_le scbval;
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter. Reason code = %d\n", reason_code);
        if (!check_vif_up(ifp->vif))
                return -EIO;

        clear_bit(BRCMF_VIF_STATUS_CONNECTED, &ifp->vif->sme_state);

        memcpy(&scbval.ea, &profile->bssid, ETH_ALEN);
        scbval.val = cpu_to_le32(reason_code);
        err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_DISASSOC,
                                     &scbval, sizeof(scbval));
        if (err)
                brcmf_err("error (%d)\n", err);

        brcmf_dbg(TRACE, "Exit\n");
        return err;
}

static s32
brcmf_cfg80211_set_tx_power(struct wiphy *wiphy, struct wireless_dev *wdev,
                            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);
        struct brcmf_if *ifp = netdev_priv(ndev);
        u16 txpwrmw;
        s32 err = 0;
        s32 disable = 0;
        s32 dbm = MBM_TO_DBM(mbm);

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

        switch (type) {
        case NL80211_TX_POWER_AUTOMATIC:
                break;
        case NL80211_TX_POWER_LIMITED:
        case NL80211_TX_POWER_FIXED:
                if (dbm < 0) {
                        brcmf_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_fil_cmd_int_set(ifp, BRCMF_C_SET_RADIO, disable);
        if (err)
                brcmf_err("WLC_SET_RADIO error (%d)\n", err);

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

done:
        brcmf_dbg(TRACE, "Exit\n");
        return err;
}

static s32 brcmf_cfg80211_get_tx_power(struct wiphy *wiphy,
                                       struct wireless_dev *wdev,
                                       s32 *dbm)
{
        struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
        struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
        s32 txpwrdbm;
        u8 result;
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

        err = brcmf_fil_iovar_int_get(ifp, "qtxpower", &txpwrdbm);
        if (err) {
                brcmf_err("error (%d)\n", err);
                goto done;
        }

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

done:
        brcmf_dbg(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_if *ifp = netdev_priv(ndev);
        u32 index;
        u32 wsec;
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        brcmf_dbg(CONN, "key index (%d)\n", key_idx);
        if (!check_vif_up(ifp->vif))
                return -EIO;

        err = brcmf_fil_bsscfg_int_get(ifp, "wsec", &wsec);
        if (err) {
                brcmf_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_fil_cmd_int_set(ifp,
                                            BRCMF_C_SET_KEY_PRIMARY, index);
                if (err)
                        brcmf_err("error (%d)\n", err);
        }
done:
        brcmf_dbg(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_wsec_key key;
        s32 err = 0;

        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;
        /* check for key index change */
        if (key.len == 0) {
                /* key delete */
                err = send_key_to_dongle(ndev, &key);
                if (err)
                        brcmf_err("key delete error (%d)\n", err);
        } else {
                if (key.len > sizeof(key.data)) {
                        brcmf_err("Invalid key length (%d)\n", key.len);
                        return -EINVAL;
                }

                brcmf_dbg(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;
                        brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP40\n");
                        break;
                case WLAN_CIPHER_SUITE_WEP104:
                        key.algo = CRYPTO_ALGO_WEP128;
                        brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP104\n");
                        break;
                case WLAN_CIPHER_SUITE_TKIP:
                        key.algo = CRYPTO_ALGO_TKIP;
                        brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_TKIP\n");
                        break;
                case WLAN_CIPHER_SUITE_AES_CMAC:
                        key.algo = CRYPTO_ALGO_AES_CCM;
                        brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_AES_CMAC\n");
                        break;
                case WLAN_CIPHER_SUITE_CCMP:
                        key.algo = CRYPTO_ALGO_AES_CCM;
                        brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_CCMP\n");
                        break;
                default:
                        brcmf_err("Invalid cipher (0x%x)\n", params->cipher);
                        return -EINVAL;
                }
                err = send_key_to_dongle(ndev, &key);
                if (err)
                        brcmf_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_if *ifp = netdev_priv(ndev);
        struct brcmf_wsec_key key;
        s32 val;
        s32 wsec;
        s32 err = 0;
        u8 keybuf[8];

        brcmf_dbg(TRACE, "Enter\n");
        brcmf_dbg(CONN, "key index (%d)\n", key_idx);
        if (!check_vif_up(ifp->vif))
                return -EIO;

        if (mac_addr) {
                brcmf_dbg(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)) {
                brcmf_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;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP40\n");
                break;
        case WLAN_CIPHER_SUITE_WEP104:
                key.algo = CRYPTO_ALGO_WEP128;
                val = WEP_ENABLED;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP104\n");
                break;
        case WLAN_CIPHER_SUITE_TKIP:
                if (ifp->vif->mode != WL_MODE_AP) {
                        brcmf_dbg(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;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_TKIP\n");
                break;
        case WLAN_CIPHER_SUITE_AES_CMAC:
                key.algo = CRYPTO_ALGO_AES_CCM;
                val = AES_ENABLED;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_AES_CMAC\n");
                break;
        case WLAN_CIPHER_SUITE_CCMP:
                key.algo = CRYPTO_ALGO_AES_CCM;
                val = AES_ENABLED;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_CCMP\n");
                break;
        default:
                brcmf_err("Invalid cipher (0x%x)\n", params->cipher);
                err = -EINVAL;
                goto done;
        }

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

        err = brcmf_fil_bsscfg_int_get(ifp, "wsec", &wsec);
        if (err) {
                brcmf_err("get wsec error (%d)\n", err);
                goto done;
        }
        wsec |= val;
        err = brcmf_fil_bsscfg_int_set(ifp, "wsec", wsec);
        if (err) {
                brcmf_err("set wsec error (%d)\n", err);
                goto done;
        }

done:
        brcmf_dbg(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_if *ifp = netdev_priv(ndev);
        struct brcmf_wsec_key key;
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

        if (key_idx >= DOT11_MAX_DEFAULT_KEYS) {
                /* we ignore this key index in this case */
                brcmf_err("invalid key index (%d)\n", key_idx);
                return -EINVAL;
        }

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

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

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

        /* Set the new key/index */
        err = send_key_to_dongle(ndev, &key);

        brcmf_dbg(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_if *ifp = netdev_priv(ndev);
        struct brcmf_cfg80211_profile *profile = &ifp->vif->profile;
        struct brcmf_cfg80211_security *sec;
        s32 wsec;
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        brcmf_dbg(CONN, "key index (%d)\n", key_idx);
        if (!check_vif_up(ifp->vif))
                return -EIO;

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

        err = brcmf_fil_bsscfg_int_get(ifp, "wsec", &wsec);
        if (err) {
                brcmf_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;
                        brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP40\n");
                } else if (sec->cipher_pairwise & WLAN_CIPHER_SUITE_WEP104) {
                        params.cipher = WLAN_CIPHER_SUITE_WEP104;
                        brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_WEP104\n");
                }
                break;
        case TKIP_ENABLED:
                params.cipher = WLAN_CIPHER_SUITE_TKIP;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_TKIP\n");
                break;
        case AES_ENABLED:
                params.cipher = WLAN_CIPHER_SUITE_AES_CMAC;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_AES_CMAC\n");
                break;
        default:
                brcmf_err("Invalid algo (0x%x)\n", wsec);
                err = -EINVAL;
                goto done;
        }
        callback(cookie, &params);

done:
        brcmf_dbg(TRACE, "Exit\n");
        return err;
}

static s32
brcmf_cfg80211_config_default_mgmt_key(struct wiphy *wiphy,
                                    struct net_device *ndev, u8 key_idx)
{
        brcmf_dbg(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_if *ifp = netdev_priv(ndev);
        struct brcmf_cfg80211_profile *profile = &ifp->vif->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;

        brcmf_dbg(TRACE, "Enter, MAC %pM\n", mac);
        if (!check_vif_up(ifp->vif))
                return -EIO;

        if (ifp->vif->mode == WL_MODE_AP) {
                memcpy(&sta_info_le, mac, ETH_ALEN);
                err = brcmf_fil_iovar_data_get(ifp, "sta_info",
                                               &sta_info_le,
                                               sizeof(sta_info_le));
                if (err < 0) {
                        brcmf_err("GET STA INFO failed, %d\n", err);
                        goto done;
                }
                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);
                }
                brcmf_dbg(TRACE, "STA idle time : %d ms, connected time :%d sec\n",
                          sinfo->inactive_time, sinfo->connected_time);
        } else if (ifp->vif->mode == WL_MODE_BSS) {
                if (memcmp(mac, bssid, ETH_ALEN)) {
                        brcmf_err("Wrong Mac address cfg_mac-%pM wl_bssid-%pM\n",
                                  mac, bssid);
                        err = -ENOENT;
                        goto done;
                }
                /* Report the current tx rate */
        err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_RATE, &rate);
                if (err) {
                        brcmf_err("Could not get rate (%d)\n", err);
                        goto done;
                } else {
                        sinfo->filled |= STATION_INFO_TX_BITRATE;
                        sinfo->txrate.legacy = rate * 5;
                        brcmf_dbg(CONN, "Rate %d Mbps\n", rate / 2);
                }

                if (test_bit(BRCMF_VIF_STATUS_CONNECTED,
                             &ifp->vif->sme_state)) {
                        memset(&scb_val, 0, sizeof(scb_val));
                        err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_RSSI,
                                                     &scb_val, sizeof(scb_val));
                        if (err) {
                                brcmf_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;
                                brcmf_dbg(CONN, "RSSI %d dBm\n", rssi);
                        }
                }
        } else
                err = -EPERM;
done:
        brcmf_dbg(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);
        struct brcmf_if *ifp = netdev_priv(ndev);

        brcmf_dbg(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 (!check_vif_up(ifp->vif)) {

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

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

        err = brcmf_fil_cmd_int_set(ifp, BRCMF_C_SET_PM, pm);
        if (err) {
                if (err == -ENODEV)
                        brcmf_err("net_device is not ready yet\n");
                else
                        brcmf_err("error (%d)\n", err);
        }
done:
        brcmf_dbg(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 brcmf_if *ifp = netdev_priv(ndev);
        struct brcm_rateset_le rateset_le;
        s32 rate;
        s32 val;
        s32 err_bg;
        s32 err_a;
        u32 legacy;
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

        /* addr param is always NULL. ignore it */
        /* Get current rateset */
        err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_CURR_RATESET,
                                     &rateset_le, sizeof(rateset_le));
        if (err) {
                brcmf_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;

        brcmf_dbg(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_fil_iovar_int_set(ifp, "bg_rate", rate);
        err_a = brcmf_fil_iovar_int_set(ifp, "a_rate", rate);
        if (err_bg && err_a) {
                brcmf_err("could not set fixed rate (%d) (%d)\n", err_bg,
                          err_a);
                err = err_bg | err_a;
        }

done:
        brcmf_dbg(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) {
                brcmf_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;

        brcmf_dbg(CONN, "bssid: %pM\n", bi->BSSID);
        brcmf_dbg(CONN, "Channel: %d(%d)\n", channel, freq);
        brcmf_dbg(CONN, "Capability: %X\n", notify_capability);
        brcmf_dbg(CONN, "Beacon interval: %d\n", notify_interval);
        brcmf_dbg(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->count != 0 &&
            bss_list->version != BRCMF_BSS_INFO_VERSION) {
                brcmf_err("Version %d != WL_BSS_INFO_VERSION\n",
                          bss_list->version);
                return -EOPNOTSUPP;
        }
        brcmf_dbg(SCAN, "scanned AP count (%d)\n", bss_list->count);
        for (i = 0; i < bss_list->count; 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;

        brcmf_dbg(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_fil_cmd_data_get(netdev_priv(ndev), BRCMF_C_GET_BSS_INFO,
                                     buf, WL_BSS_INFO_MAX);
        if (err) {
                brcmf_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;

        brcmf_dbg(CONN, "channel: %d(%d)\n", channel, freq);
        brcmf_dbg(CONN, "capability: %X\n", notify_capability);
        brcmf_dbg(CONN, "beacon interval: %d\n", notify_interval);
        brcmf_dbg(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);

        brcmf_dbg(TRACE, "Exit\n");

        return err;
}

static bool brcmf_is_ibssmode(struct brcmf_cfg80211_vif *vif)
{
        return vif->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;
}

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

        while ((ie = brcmf_parse_tlvs(parse, len, WLAN_EID_VENDOR_SPECIFIC))) {
                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 net_device *ndev = cfg_to_ndev(cfg);
        struct brcmf_cfg80211_profile *profile = ndev_to_prof(ndev);
        struct brcmf_if *ifp = netdev_priv(ndev);
        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;

        brcmf_dbg(TRACE, "Enter\n");
        if (brcmf_is_ibssmode(ifp->vif))
                return err;

        ssid = &profile->ssid;

        *(__le32 *)cfg->extra_buf = cpu_to_le32(WL_EXTRA_BUF_MAX);
        err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO,
                                     cfg->extra_buf, WL_EXTRA_BUF_MAX);
        if (err) {
                brcmf_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_fil_iovar_int_get(ifp, "dtim_assoc", &var);
                if (err) {
                        brcmf_err("wl dtim_assoc failed (%d)\n", err);
                        goto update_bss_info_out;
                }
                dtim_period = (u8)var;
        }

update_bss_info_out:
        brcmf_dbg(TRACE, "Exit");
        return err;
}

static void brcmf_abort_scanning(struct brcmf_cfg80211_info *cfg)
{
        struct escan_info *escan = &cfg->escan_info;

        set_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status);
        if (cfg->scan_request) {
                escan->escan_state = WL_ESCAN_STATE_IDLE;
                brcmf_notify_escan_complete(cfg, escan->ndev, true, true);
        }
        clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
        clear_bit(BRCMF_SCAN_STATUS_ABORT, &cfg->scan_status);
}

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) {
                brcmf_err("timer expired\n");
                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_if *ifp,
                             const struct brcmf_event_msg *e, void *data)
{
        struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
        struct net_device *ndev = ifp->ndev;
        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 = e->status;

        if (!ndev || !test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
                brcmf_err("scan not ready ndev %p drv_status %x\n", ndev,
                          !test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status));
                return -EPERM;
        }

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

                if (le16_to_cpu(escan_result_le->bss_count) != 1) {
                        brcmf_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)) {
                        brcmf_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) {
                                brcmf_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) {
                        brcmf_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
                        brcmf_err("Unexpected scan result 0x%x\n", status);
        }
exit:
        return err;
}

static void brcmf_init_escan(struct brcmf_cfg80211_info *cfg)
{
        brcmf_fweh_register(cfg->pub, 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)
{
        brcmf_dbg(TRACE, "Enter\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);
        struct brcmf_cfg80211_vif *vif;

        brcmf_dbg(TRACE, "Enter\n");

        /*
         * if the primary net_device is not READY there is nothing
         * we can do but pray resume goes smoothly.
         */
        vif = ((struct brcmf_if *)netdev_priv(ndev))->vif;
        if (!check_vif_up(vif))
                goto exit;

        list_for_each_entry(vif, &cfg->vif_list, list) {
                if (!test_bit(BRCMF_VIF_STATUS_READY, &vif->sme_state))
                        continue;
                /*
                 * While going to suspend if associated with AP disassociate
                 * from AP to save power while system is in suspended state
                 */
                brcmf_link_down(vif);

                /* 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);
        }

        /* end any scanning */
        if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
                brcmf_abort_scanning(cfg);

        /* Turn off watchdog timer */
        brcmf_set_mpc(ndev, 1);

exit:
        brcmf_dbg(TRACE, "Exit\n");
        /* clear any scanning activity */
        cfg->scan_status = 0;
        return 0;
}

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);

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

        if (!err)
                brcmf_fil_iovar_data_set(netdev_priv(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 brcmf_if *ifp = netdev_priv(ndev);
        struct pmkid_list *pmkids = &cfg->pmk_list->pmkids;
        s32 err = 0;
        int i;
        int pmkid_len;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                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;

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

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

        brcmf_dbg(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 brcmf_if *ifp = netdev_priv(ndev);
        struct pmkid_list pmkid;
        s32 err = 0;
        int i, pmkid_len;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

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

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

        brcmf_dbg(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);
        struct brcmf_if *ifp = netdev_priv(ndev);
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif))
                return -EIO;

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

        brcmf_dbg(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_if *ifp,
                                const struct brcmf_event_msg *e, void *data)
{
        struct brcmf_cfg80211_info *cfg = ifp->drvr->config;
        struct net_device *ndev = ifp->ndev;
        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;

        brcmf_dbg(SCAN, "Enter\n");

        if (e->event_code == BRCMF_E_PFN_NET_LOST) {
                brcmf_dbg(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);
        brcmf_dbg(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) {
                                brcmf_err("Invalid netinfo ptr. index: %d\n",
                                          i);
                                err = -EINVAL;
                                goto out_err;
                        }

                        brcmf_dbg(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(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
                        /* Abort any on-going scan */
                        brcmf_abort_scanning(cfg);
                }

                set_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
                err = brcmf_do_escan(cfg, wiphy, ndev, request);
                if (err) {
                        clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status);
                        goto out_err;
                }
                cfg->sched_escan = true;
                cfg->scan_request = request;
        } else {
                brcmf_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;
}

static int brcmf_dev_pno_clean(struct net_device *ndev)
{
        int ret;

        /* Disable pfn */
        ret = brcmf_fil_iovar_int_set(netdev_priv(ndev), "pfn", 0);
        if (ret == 0) {
                /* clear pfn */
                ret = brcmf_fil_iovar_data_set(netdev_priv(ndev), "pfnclear",
                                               NULL, 0);
        }
        if (ret < 0)
                brcmf_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;

        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_fil_iovar_data_set(netdev_priv(ndev), "pfn_set",
                                        &pfn_param, sizeof(pfn_param));
}

static int
brcmf_cfg80211_sched_scan_start(struct wiphy *wiphy,
                                struct net_device *ndev,
                                struct cfg80211_sched_scan_request *request)
{
        struct brcmf_if *ifp = netdev_priv(ndev);
        struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
        struct brcmf_pno_net_param_le pfn;
        int i;
        int ret = 0;

        brcmf_dbg(SCAN, "Enter n_match_sets:%d   n_ssids:%d\n",
                  request->n_match_sets, request->n_ssids);
        if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
                brcmf_err("Scanning already: status (%lu)\n", cfg->scan_status);
                return -EAGAIN;
        }

        if (!request || !request->n_ssids || !request->n_match_sets) {
                brcmf_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 */
                        brcmf_dbg(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) {
                        brcmf_err("failed error=%d\n", ret);
                        return ret;
                }

                /* configure pno */
                ret = brcmf_dev_pno_config(ndev);
                if (ret < 0) {
                        brcmf_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) {
                                brcmf_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_fil_iovar_data_set(ifp, "pfn_add", &pfn,
                                                       sizeof(pfn));
                        brcmf_dbg(SCAN, ">>> PNO filter %s for ssid (%s)\n",
                                  ret == 0 ? "set" : "failed", ssid->ssid);
                }
                /* Enable the PNO */
                if (brcmf_fil_iovar_int_set(ifp, "pfn", 1) < 0) {
                        brcmf_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);

        brcmf_dbg(SCAN, "enter\n");