/*
 * 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. */

#include <linux/kernel.h>
#include <linux/etherdevice.h>
#include <linux/module.h>
#include <linux/vmalloc.h>
#include <net/cfg80211.h>
#include <net/netlink.h>

#include <brcmu_utils.h>
#include <defs.h>
#include <brcmu_wifi.h>
#include "core.h"
#include "debug.h"
#include "tracepoint.h"
#include "fwil_types.h"
#include "p2p.h"
#include "btcoex.h"
#include "cfg80211.h"
#include "feature.h"
#include "fwil.h"
#include "proto.h"
#include "vendor.h"
#include "bus.h"
#include "common.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 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 WPS_OUI_TYPE                    4

#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_AKM_SHA256_1X               5       /* SHA256, 802.1X */
#define RSN_AKM_SHA256_PSK              6       /* SHA256, Pre-shared Key */
#define RSN_CAP_LEN                     2       /* Length of RSN capabilities */
#define RSN_CAP_PTK_REPLAY_CNTR_MASK    (BIT(2) | BIT(3))
#define RSN_CAP_MFPR_MASK               BIT(6)
#define RSN_CAP_MFPC_MASK               BIT(7)
#define RSN_PMKID_COUNT_LEN             2

#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_PARSE_LIMIT             5

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

#define BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS    320
#define BRCMF_SCAN_JOIN_PASSIVE_DWELL_TIME_MS   400
#define BRCMF_SCAN_JOIN_PROBE_INTERVAL_MS       20

#define BRCMF_SCAN_CHANNEL_TIME         40
#define BRCMF_SCAN_UNASSOC_TIME         40
#define BRCMF_SCAN_PASSIVE_TIME         120

#define BRCMF_ND_INFO_TIMEOUT           msecs_to_jiffies(2000)

#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 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_g_rates              (__wl_rates + 0)
#define wl_g_rates_size         ARRAY_SIZE(__wl_rates)
#define wl_a_rates              (__wl_rates + 4)
#define wl_a_rates_size         (wl_g_rates_size - 4)

#define CHAN2G(_channel, _freq) {                               \
        .band                   = IEEE80211_BAND_2GHZ,          \
        .center_freq            = (_freq),                      \
        .hw_value               = (_channel),                   \
        .flags                  = IEEE80211_CHAN_DISABLED,      \
        .max_antenna_gain       = 0,                            \
        .max_power              = 30,                           \
}

#define CHAN5G(_channel) {                                      \
        .band                   = IEEE80211_BAND_5GHZ,          \
        .center_freq            = 5000 + (5 * (_channel)),      \
        .hw_value               = (_channel),                   \
        .flags                  = IEEE80211_CHAN_DISABLED,      \
        .max_antenna_gain       = 0,                            \
        .max_power              = 30,                           \
}

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

static struct ieee80211_channel __wl_5ghz_channels[] = {
        CHAN5G(34), CHAN5G(36), CHAN5G(38), CHAN5G(40), CHAN5G(42),
        CHAN5G(44), CHAN5G(46), CHAN5G(48), CHAN5G(52), CHAN5G(56),
        CHAN5G(60), CHAN5G(64), CHAN5G(100), CHAN5G(104), CHAN5G(108),
        CHAN5G(112), CHAN5G(116), CHAN5G(120), CHAN5G(124), CHAN5G(128),
        CHAN5G(132), CHAN5G(136), CHAN5G(140), CHAN5G(144), CHAN5G(149),
        CHAN5G(153), CHAN5G(157), CHAN5G(161), CHAN5G(165)
};

/* Band templates duplicated per wiphy. The channel info
 * above is added to the band during setup.
 */
static const struct ieee80211_supported_band __wl_band_2ghz = {
        .band = IEEE80211_BAND_2GHZ,
        .bitrates = wl_g_rates,
        .n_bitrates = wl_g_rates_size,
};

static const struct ieee80211_supported_band __wl_band_5ghz = {
        .band = IEEE80211_BAND_5GHZ,
        .bitrates = wl_a_rates,
        .n_bitrates = wl_a_rates_size,
};

/* This is to override regulatory domains defined in cfg80211 module (reg.c)
 * By default world regulatory domain defined in reg.c puts the flags
 * NL80211_RRF_NO_IR for 5GHz channels (for * 36..48 and 149..165).
 * With respect to these flags, wpa_supplicant doesn't * start p2p
 * operations on 5GHz channels. All the changes in world regulatory
 * domain are to be done here.
 */
static const struct ieee80211_regdomain brcmf_regdom = {
        .n_reg_rules = 4,
        .alpha2 =  "99",
        .reg_rules = {
                /* IEEE 802.11b/g, channels 1..11 */
                REG_RULE(2412-10, 2472+10, 40, 6, 20, 0),
                /* If any */
                /* IEEE 802.11 channel 14 - Only JP enables
                 * this and for 802.11b only
                 */
                REG_RULE(2484-10, 2484+10, 20, 6, 20, 0),
                /* IEEE 802.11a, channel 36..64 */
                REG_RULE(5150-10, 5350+10, 80, 6, 20, 0),
                /* IEEE 802.11a, channel 100..165 */
                REG_RULE(5470-10, 5850+10, 80, 6, 20, 0), }
};

/* Note: brcmf_cipher_suites is an array of int defining which cipher suites
 * are supported. A pointer to this array and the number of entries is passed
 * on to upper layers. AES_CMAC defines whether or not the driver supports MFP.
 * So the cipher suite AES_CMAC has to be the last one in the array, and when
 * device does not support MFP then the number of suites will be decreased by 1
 */
static const u32 brcmf_cipher_suites[] = {
        WLAN_CIPHER_SUITE_WEP40,
        WLAN_CIPHER_SUITE_WEP104,
        WLAN_CIPHER_SUITE_TKIP,
        WLAN_CIPHER_SUITE_CCMP,
        /* Keep as last entry: */
        WLAN_CIPHER_SUITE_AES_CMAC
};

/* 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[VNDR_IE_PARSE_LIMIT];
};

static u16 chandef_to_chanspec(struct brcmu_d11inf *d11inf,
                               struct cfg80211_chan_def *ch)
{
        struct brcmu_chan ch_inf;
        s32 primary_offset;

        brcmf_dbg(TRACE, "chandef: control %d center %d width %d\n",
                  ch->chan->center_freq, ch->center_freq1, ch->width);
        ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq1);
        primary_offset = ch->chan->center_freq - ch->center_freq1;
        switch (ch->width) {
        case NL80211_CHAN_WIDTH_20:
        case NL80211_CHAN_WIDTH_20_NOHT:
                ch_inf.bw = BRCMU_CHAN_BW_20;
                WARN_ON(primary_offset != 0);
                break;
        case NL80211_CHAN_WIDTH_40:
                ch_inf.bw = BRCMU_CHAN_BW_40;
                if (primary_offset > 0)
                        ch_inf.sb = BRCMU_CHAN_SB_U;
                else
                        ch_inf.sb = BRCMU_CHAN_SB_L;
                break;
        case NL80211_CHAN_WIDTH_80:
                ch_inf.bw = BRCMU_CHAN_BW_80;
                if (primary_offset == -30)
                        ch_inf.sb = BRCMU_CHAN_SB_LL;
                else if (primary_offset == -10)
                        ch_inf.sb = BRCMU_CHAN_SB_LU;
                else if (primary_offset == 10)
                        ch_inf.sb = BRCMU_CHAN_SB_UL;
                else
                        ch_inf.sb = BRCMU_CHAN_SB_UU;
                break;
        case NL80211_CHAN_WIDTH_80P80:
        case NL80211_CHAN_WIDTH_160:
        case NL80211_CHAN_WIDTH_5:
        case NL80211_CHAN_WIDTH_10:
        default:
                WARN_ON_ONCE(1);
        }
        switch (ch->chan->band) {
        case IEEE80211_BAND_2GHZ:
                ch_inf.band = BRCMU_CHAN_BAND_2G;
                break;
        case IEEE80211_BAND_5GHZ:
                ch_inf.band = BRCMU_CHAN_BAND_5G;
                break;
        case IEEE80211_BAND_60GHZ:
        default:
                WARN_ON_ONCE(1);
        }
        d11inf->encchspec(&ch_inf);

        return ch_inf.chspec;
}

u16 channel_to_chanspec(struct brcmu_d11inf *d11inf,
                        struct ieee80211_channel *ch)
{
        struct brcmu_chan ch_inf;

        ch_inf.chnum = ieee80211_frequency_to_channel(ch->center_freq);
        ch_inf.bw = BRCMU_CHAN_BW_20;
        d11inf->encchspec(&ch_inf);

        return ch_inf.chspec;
}

/* 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
 */
const struct brcmf_tlv *
brcmf_parse_tlvs(const void *buf, int buflen, uint key)
{
        const struct brcmf_tlv *elt = buf;
        int 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(const u8 *ie, const u8 **tlvs, u32 *tlvs_len,
                 const 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(const u8 *parse, u32 len)
{
        const struct brcmf_tlv *ie;

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

static struct brcmf_vs_tlv *
brcmf_find_wpsie(const u8 *parse, u32 len)
{
        const 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, WPS_OUI_TYPE))
                        return (struct brcmf_vs_tlv *)ie;
        }
        return NULL;
}

static int brcmf_vif_change_validate(struct brcmf_cfg80211_info *cfg,
                                     struct brcmf_cfg80211_vif *vif,
                                     enum nl80211_iftype new_type)
{
        int iftype_num[NUM_NL80211_IFTYPES];
        struct brcmf_cfg80211_vif *pos;
        bool check_combos = false;
        int ret = 0;

        memset(&iftype_num[0], 0, sizeof(iftype_num));
        list_for_each_entry(pos, &cfg->vif_list, list)
                if (pos == vif) {
                        iftype_num[new_type]++;
                } else {
                        /* concurrent interfaces so need check combinations */
                        check_combos = true;
                        iftype_num[pos->wdev.iftype]++;
                }

        if (check_combos)
                ret = cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);

        return ret;
}

static int brcmf_vif_add_validate(struct brcmf_cfg80211_info *cfg,
                                  enum nl80211_iftype new_type)
{
        int iftype_num[NUM_NL80211_IFTYPES];
        struct brcmf_cfg80211_vif *pos;

        memset(&iftype_num[0], 0, sizeof(iftype_num));
        list_for_each_entry(pos, &cfg->vif_list, list)
                iftype_num[pos->wdev.iftype]++;

        iftype_num[new_type]++;
        return cfg80211_check_combinations(cfg->wiphy, 1, 0, iftype_num);
}

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

static int
send_key_to_dongle(struct brcmf_if *ifp, 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(ifp);

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

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

static s32
brcmf_configure_arp_nd_offload(struct brcmf_if *ifp, bool enable)
{
        s32 err;
        u32 mode;

        if (enable)
                mode = BRCMF_ARP_OL_AGENT | BRCMF_ARP_OL_PEER_AUTO_REPLY;
        else
                mode = 0;

        /* Try to set and enable ARP offload feature, this may fail, then it  */
        /* is simply not supported and err 0 will be returned                 */
        err = brcmf_fil_iovar_int_set(ifp, "arp_ol", mode);
        if (err) {
                brcmf_dbg(TRACE, "failed to set ARP offload mode to 0x%x, err = %d\n",
                          mode, err);
                err = 0;
        } else {
                err = brcmf_fil_iovar_int_set(ifp, "arpoe", enable);
                if (err) {
                        brcmf_dbg(TRACE, "failed to configure (%d) ARP offload err = %d\n",
                                  enable, err);
                        err = 0;
                } else
                        brcmf_dbg(TRACE, "successfully configured (%d) ARP offload to 0x%x\n",
                                  enable, mode);
        }

        err = brcmf_fil_iovar_int_set(ifp, "ndoe", enable);
        if (err) {
                brcmf_dbg(TRACE, "failed to configure (%d) ND offload err = %d\n",
                          enable, err);
                err = 0;
        } else
                brcmf_dbg(TRACE, "successfully configured (%d) ND offload to 0x%x\n",
                          enable, mode);

        return err;
}

static void
brcmf_cfg80211_update_proto_addr_mode(struct wireless_dev *wdev)
{
        struct brcmf_cfg80211_vif *vif;
        struct brcmf_if *ifp;

        vif = container_of(wdev, struct brcmf_cfg80211_vif, wdev);
        ifp = vif->ifp;

        if ((wdev->iftype == NL80211_IFTYPE_ADHOC) ||
            (wdev->iftype == NL80211_IFTYPE_AP) ||
            (wdev->iftype == NL80211_IFTYPE_P2P_GO))
                brcmf_proto_configure_addr_mode(ifp->drvr, ifp->ifidx,
                                                ADDR_DIRECT);
        else
                brcmf_proto_configure_addr_mode(ifp->drvr, ifp->ifidx,
                                                ADDR_INDIRECT);
}

static int brcmf_cfg80211_request_ap_if(struct brcmf_if *ifp)
{
        struct brcmf_mbss_ssid_le mbss_ssid_le;
        int bsscfgidx;
        int err;

        memset(&mbss_ssid_le, 0, sizeof(mbss_ssid_le));
        bsscfgidx = brcmf_get_next_free_bsscfgidx(ifp->drvr);
        if (bsscfgidx < 0)
                return bsscfgidx;

        mbss_ssid_le.bsscfgidx = cpu_to_le32(bsscfgidx);
        mbss_ssid_le.SSID_len = cpu_to_le32(5);
        sprintf(mbss_ssid_le.SSID, "ssid%d" , bsscfgidx);

        err = brcmf_fil_bsscfg_data_set(ifp, "bsscfg:ssid", &mbss_ssid_le,
                                        sizeof(mbss_ssid_le));
        if (err < 0)
                brcmf_err("setting ssid failed %d\n", err);

        return err;
}

/**
 * brcmf_ap_add_vif() - create a new AP virtual interface for multiple BSS
 *
 * @wiphy: wiphy device of new interface.
 * @name: name of the new interface.
 * @flags: not used.
 * @params: contains mac address for AP device.
 */
static
struct wireless_dev *brcmf_ap_add_vif(struct wiphy *wiphy, const char *name,
                                      u32 *flags, struct vif_params *params)
{
        struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
        struct brcmf_if *ifp = netdev_priv(cfg_to_ndev(cfg));
        struct brcmf_cfg80211_vif *vif;
        int err;

        if (brcmf_cfg80211_vif_event_armed(cfg))
                return ERR_PTR(-EBUSY);

        brcmf_dbg(INFO, "Adding vif \"%s\"\n", name);

        vif = brcmf_alloc_vif(cfg, NL80211_IFTYPE_AP, false);
        if (IS_ERR(vif))
                return (struct wireless_dev *)vif;

        brcmf_cfg80211_arm_vif_event(cfg, vif);

        err = brcmf_cfg80211_request_ap_if(ifp);
        if (err) {
                brcmf_cfg80211_arm_vif_event(cfg, NULL);
                goto fail;
        }

        /* wait for firmware event */
        err = brcmf_cfg80211_wait_vif_event(cfg, BRCMF_E_IF_ADD,
                                            BRCMF_VIF_EVENT_TIMEOUT);
        brcmf_cfg80211_arm_vif_event(cfg, NULL);
        if (!err) {
                brcmf_err("timeout occurred\n");
                err = -EIO;
                goto fail;
        }

        /* interface created in firmware */
        ifp = vif->ifp;
        if (!ifp) {
                brcmf_err("no if pointer provided\n");
                err = -ENOENT;
                goto fail;
        }

        strncpy(ifp->ndev->name, name, sizeof(ifp->ndev->name) - 1);
        err = brcmf_net_attach(ifp, true);
        if (err) {
                brcmf_err("Registering netdevice failed\n");
                goto fail;
        }

        return &ifp->vif->wdev;

fail:
        brcmf_free_vif(vif);
        return ERR_PTR(err);
}

static bool brcmf_is_apmode(struct brcmf_cfg80211_vif *vif)
{
        enum nl80211_iftype iftype;

        iftype = vif->wdev.iftype;
        return iftype == NL80211_IFTYPE_AP || iftype == NL80211_IFTYPE_P2P_GO;
}

static bool brcmf_is_ibssmode(struct brcmf_cfg80211_vif *vif)
{
        return vif->wdev.iftype == NL80211_IFTYPE_ADHOC;
}

static struct wireless_dev *brcmf_cfg80211_add_iface(struct wiphy *wiphy,
                                                     const char *name,
                                                     unsigned char name_assign_type,
                                                     enum nl80211_iftype type,
                                                     u32 *flags,
                                                     struct vif_params *params)
{
        struct wireless_dev *wdev;
        int err;

        brcmf_dbg(TRACE, "enter: %s type %d\n", name, type);
        err = brcmf_vif_add_validate(wiphy_to_cfg(wiphy), type);
        if (err) {
                brcmf_err("iface validation failed: err=%d\n", err);
                return ERR_PTR(err);
        }
        switch (type) {
        case NL80211_IFTYPE_ADHOC:
        case NL80211_IFTYPE_STATION:
        case NL80211_IFTYPE_AP_VLAN:
        case NL80211_IFTYPE_WDS:
        case NL80211_IFTYPE_MONITOR:
        case NL80211_IFTYPE_MESH_POINT:
                return ERR_PTR(-EOPNOTSUPP);
        case NL80211_IFTYPE_AP:
                wdev = brcmf_ap_add_vif(wiphy, name, flags, params);
                if (!IS_ERR(wdev))
                        brcmf_cfg80211_update_proto_addr_mode(wdev);
                return wdev;
        case NL80211_IFTYPE_P2P_CLIENT:
        case NL80211_IFTYPE_P2P_GO:
        case NL80211_IFTYPE_P2P_DEVICE:
                wdev = brcmf_p2p_add_vif(wiphy, name, name_assign_type, type, flags, params);
                if (!IS_ERR(wdev))
                        brcmf_cfg80211_update_proto_addr_mode(wdev);
                return wdev;
        case NL80211_IFTYPE_UNSPECIFIED:
        default:
                return ERR_PTR(-EINVAL);
        }
}

static void brcmf_scan_config_mpc(struct brcmf_if *ifp, int mpc)
{
        if (brcmf_feat_is_quirk_enabled(ifp, BRCMF_FEAT_QUIRK_NEED_MPC))
                brcmf_set_mpc(ifp, mpc);
}

void brcmf_set_mpc(struct brcmf_if *ifp, int mpc)
{
        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);
        }
}

s32 brcmf_notify_escan_complete(struct brcmf_cfg80211_info *cfg,
                                struct brcmf_if *ifp, 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));
                eth_broadcast_addr(params_le.bssid);
                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(ifp, BRCMF_C_SCAN,
                                             &params_le, sizeof(params_le));
                if (err)
                        brcmf_err("Scan abort  failed\n");
        }

        brcmf_scan_config_mpc(ifp, 1);

        /*
         * 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));
        } else if (scan_request) {
                brcmf_dbg(SCAN, "ESCAN Completed scan: %s\n",
                          aborted ? "Aborted" : "Done");
                cfg80211_scan_done(scan_request, aborted);
        }
        if (!test_and_clear_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status))
                brcmf_dbg(SCAN, "Scan complete, probably P2P scan\n");

        return err;
}

static
int brcmf_cfg80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
{
        struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
        struct net_device *ndev = wdev->netdev;

        /* vif event pending in firmware */
        if (brcmf_cfg80211_vif_event_armed(cfg))
                return -EBUSY;

        if (ndev) {
                if (test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status) &&
                    cfg->escan_info.ifp == netdev_priv(ndev))
                        brcmf_notify_escan_complete(cfg, netdev_priv(ndev),
                                                    true, true);

                brcmf_fil_iovar_int_set(netdev_priv(ndev), "mpc", 1);
        }

        switch (wdev->iftype) {
        case NL80211_IFTYPE_ADHOC:
        case NL80211_IFTYPE_STATION:
        case NL80211_IFTYPE_AP:
        case NL80211_IFTYPE_AP_VLAN:
        case NL80211_IFTYPE_WDS:
        case NL80211_IFTYPE_MONITOR:
        case NL80211_IFTYPE_MESH_POINT:
                return -EOPNOTSUPP;
        case NL80211_IFTYPE_P2P_CLIENT:
        case NL80211_IFTYPE_P2P_GO:
        case NL80211_IFTYPE_P2P_DEVICE:
                return brcmf_p2p_del_vif(wiphy, wdev);
        case NL80211_IFTYPE_UNSPECIFIED:
        default:
                return -EINVAL;
        }
        return -EOPNOTSUPP;
}

static s32
brcmf_cfg80211_change_iface(struct wiphy *wiphy, struct net_device *ndev,
                         enum nl80211_iftype type, u32 *flags,
                         struct vif_params *params)
{
        struct brcmf_cfg80211_info *cfg = wiphy_priv(wiphy);
        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, bsscfgidx=%d, type=%d\n", ifp->bsscfgidx,
                  type);

        /* WAR: There are a number of p2p interface related problems which
         * need to be handled initially (before doing the validate).
         * wpa_supplicant tends to do iface changes on p2p device/client/go
         * which are not always possible/allowed. However we need to return
         * OK otherwise the wpa_supplicant wont start. The situation differs
         * on configuration and setup (p2pon=1 module param). The first check
         * is to see if the request is a change to station for p2p iface.
         */
        if ((type == NL80211_IFTYPE_STATION) &&
            ((vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) ||
             (vif->wdev.iftype == NL80211_IFTYPE_P2P_GO) ||
             (vif->wdev.iftype == NL80211_IFTYPE_P2P_DEVICE))) {
                brcmf_dbg(TRACE, "Ignoring cmd for p2p if\n");
                /* Now depending on whether module param p2pon=1 was used the
                 * response needs to be either 0 or EOPNOTSUPP. The reason is
                 * that if p2pon=1 is used, but a newer supplicant is used then
                 * we should return an error, as this combination wont work.
                 * In other situations 0 is returned and supplicant will start
                 * normally. It will give a trace in cfg80211, but it is the
                 * only way to get it working. Unfortunately this will result
                 * in situation where we wont support new supplicant in
                 * combination with module param p2pon=1, but that is the way
                 * it is. If the user tries this then unloading of driver might
                 * fail/lock.
                 */
                if (cfg->p2p.p2pdev_dynamically)
                        return -EOPNOTSUPP;
                else
                        return 0;
        }
        err = brcmf_vif_change_validate(wiphy_to_cfg(wiphy), vif, type);
        if (err) {
                brcmf_err("iface validation failed: err=%d\n", err);
                return err;
        }
        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:
                infra = 0;
                break;
        case NL80211_IFTYPE_STATION:
                infra = 1;
                break;
        case NL80211_IFTYPE_AP:
        case NL80211_IFTYPE_P2P_GO:
                ap = 1;
                break;
        default:
                err = -EINVAL;
                goto done;
        }

        if (ap) {
                if (type == NL80211_IFTYPE_P2P_GO) {
                        brcmf_dbg(INFO, "IF Type = P2P GO\n");
                        err = brcmf_p2p_ifchange(cfg, BRCMF_FIL_P2P_IF_GO);
                }
                if (!err) {
                        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", brcmf_is_ibssmode(vif) ?
                          "Adhoc" : "Infra");
        }
        ndev->ieee80211_ptr->iftype = type;

        brcmf_cfg80211_update_proto_addr_mode(&vif->wdev);

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

        return err;
}

static void brcmf_escan_prep(struct brcmf_cfg80211_info *cfg,
                             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;

        eth_broadcast_addr(params_le->bssid);
        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(&cfg->d11inf,
                                                       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_run_escan(struct brcmf_cfg80211_info *cfg, struct brcmf_if *ifp,
                struct cfg80211_scan_request *request)
{
        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_le) * 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(cfg, &params->params_le, request);
        params->version = cpu_to_le32(BRCMF_ESCAN_REQ_VERSION);

        params->action = cpu_to_le16(WL_ESCAN_ACTION_START);
        params->sync_id = cpu_to_le16(0x1234);

        err = brcmf_fil_iovar_data_set(ifp, "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 brcmf_if *ifp, struct cfg80211_scan_request *request)
{
        s32 err;
        u32 passive_scan;
        struct brcmf_scan_results *results;
        struct escan_info *escan = &cfg->escan_info;

        brcmf_dbg(SCAN, "Enter\n");
        escan->ifp = ifp;
        escan->wiphy = wiphy;
        escan->escan_state = WL_ESCAN_STATE_SCANNING;
        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("error (%d)\n", err);
                return err;
        }
        brcmf_scan_config_mpc(ifp, 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 = escan->run(cfg, ifp, request);
        if (err)
                brcmf_scan_config_mpc(ifp, 1);
        return err;
}

static s32
brcmf_cfg80211_escan(struct wiphy *wiphy, struct brcmf_cfg80211_vif *vif,
                     struct cfg80211_scan_request *request,
                     struct cfg80211_ssid *this_ssid)
{
        struct brcmf_if *ifp = vif->ifp;
        struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
        struct cfg80211_ssid *ssids;
        u32 passive_scan;
        bool escan_req;
        bool spec_scan;
        s32 err;
        struct brcmf_ssid_le ssid_le;
        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_SCAN_STATUS_SUPPRESS, &cfg->scan_status)) {
                brcmf_err("Scanning suppressed: 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;
        }

        /* If scan req comes for p2p0, send it over primary I/F */
        if (vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_DEVICE].vif)
                vif = cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif;

        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) {
                cfg->escan_info.run = brcmf_run_escan;
                err = brcmf_p2p_scan_prep(wiphy, request, vif);
                if (err)
                        goto scan_out;

                err = brcmf_do_escan(cfg, wiphy, vif->ifp, request);
                if (err)
                        goto scan_out;
        } else {
                brcmf_dbg(SCAN, "ssid \"%s\", ssid_len (%d)\n",
                          ssids->ssid, ssids->ssid_len);
                memset(&ssid_le, 0, sizeof(ssid_le));
                SSID_len = min_t(u8, sizeof(ssid_le.SSID), ssids->ssid_len);
                ssid_le.SSID_len = cpu_to_le32(0);
                spec_scan = false;
                if (SSID_len) {
                        memcpy(ssid_le.SSID, ssids->ssid, SSID_len);
                        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_scan_config_mpc(ifp, 0);
                err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SCAN, &ssid_le,
                                             sizeof(ssid_le));
                if (err) {
                        if (err == -EBUSY)
                                brcmf_dbg(INFO, "BUSY: scan for \"%s\" canceled\n",
                                          ssid_le.SSID);
                        else
                                brcmf_err("WLC_SCAN error (%d)\n", err);

                        brcmf_scan_config_mpc(ifp, 1);
                        goto scan_out;
                }
        }

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

        return 0;

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

static s32
brcmf_cfg80211_scan(struct wiphy *wiphy, struct cfg80211_scan_request *request)
{
        struct brcmf_cfg80211_vif *vif;
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");
        vif = container_of(request->wdev, struct brcmf_cfg80211_vif, wdev);
        if (!check_vif_up(vif))
                return -EIO;

        err = brcmf_cfg80211_escan(wiphy, vif, 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 u16 brcmf_map_fw_linkdown_reason(const struct brcmf_event_msg *e)
{
        u16 reason;

        switch (e->event_code) {
        case BRCMF_E_DEAUTH:
        case BRCMF_E_DEAUTH_IND:
        case BRCMF_E_DISASSOC_IND:
                reason = e->reason;
                break;
        case BRCMF_E_LINK:
        default:
                reason = 0;
                break;
        }
        return reason;
}

static void brcmf_link_down(struct brcmf_cfg80211_vif *vif, u16 reason)
{
        struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(vif->wdev.wiphy);
        s32 err = 0;

        brcmf_dbg(TRACE, "Enter\n");

        if (test_and_clear_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);
                }
                if ((vif->wdev.iftype == NL80211_IFTYPE_STATION) ||
                    (vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT))
                        cfg80211_disconnected(vif->wdev.netdev, reason, NULL, 0,
                                              true, GFP_KERNEL);
        }
        clear_bit(BRCMF_VIF_STATUS_CONNECTING, &vif->sme_state);
        clear_bit(BRCMF_SCAN_STATUS_SUPPRESS, &cfg->scan_status);
        brcmf_btcoex_set_mode(vif, BRCMF_BTCOEX_ENABLED, 0);
        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;
        u16 chanspec;
        u32 ssid_len;

        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 */
        ssid_len = min_t(u32, params->ssid_len, IEEE80211_MAX_SSID_LEN);
        memcpy(join_params.ssid_le.SSID, params->ssid, ssid_len);
        join_params.ssid_le.SSID_len = cpu_to_le32(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 += BRCMF_ASSOC_PARAMS_FIXED_SIZE;
                memcpy(profile->bssid, params->bssid, ETH_ALEN);
        } else {
                eth_broadcast_addr(join_params.params_le.bssid);
                eth_zero_addr(profile->bssid);
        }

        /* 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 */
                        chanspec = chandef_to_chanspec(&cfg->d11inf,
                                                       &params->chandef);
                        join_params.params_le.chanspec_list[0] =
                                cpu_to_le16(chanspec);
                        join_params.params_le.chanspec_num = cpu_to_le32(1);
                        join_params_size += sizeof(join_params.params_le);
                }

                /* 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);

        brcmf_dbg(TRACE, "Enter\n");
        if (!check_vif_up(ifp->vif)) {
                /* When driver is being unloaded, it can end up here. If an
                 * error is returned then later on a debug trace in the wireless
                 * core module will be printed. To avoid this 0 is returned.
                 */
                return 0;
        }

        brcmf_link_down(ifp->vif, WLAN_REASON_DEAUTH_LEAVING);
        brcmf_net_setcarrier(ifp, false);

        brcmf_dbg(TRACE, "Exit\n");

        return 0;
}

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_bsscfg_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_bsscfg_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_wsec_mode(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 wsec;
        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);
        /* In case of privacy, but no security and WPS then simulate */
        /* setting AES. WPS-2.0 allows no security                   */
        if (brcmf_find_wpsie(sme->ie, sme->ie_len) && !pval && !gval &&
            sme->privacy)
                pval = AES_ENABLED;

        wsec = pval | gval;
        err = brcmf_fil_bsscfg_int_set(netdev_priv(ndev), "wsec", wsec);
        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_if *ifp = netdev_priv(ndev);
        s32 val;
        s32 err;
        const struct brcmf_tlv *rsn_ie;
        const u8 *ie;
        u32 ie_len;
        u32 offset;
        u16 rsn_cap;
        u32 mfp;
        u16 count;

        if (!sme->crypto.n_akm_suites)
                return 0;

        err = brcmf_fil_bsscfg_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_8021X_SHA256:
                        val = WPA2_AUTH_1X_SHA256;
                        break;
                case WLAN_AKM_SUITE_PSK_SHA256:
                        val = WPA2_AUTH_PSK_SHA256;
                        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;
                }
        }

        if (!brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MFP))
                goto skip_mfp_config;
        /* The MFP mode (1 or 2) needs to be determined, parse IEs. The
         * IE will not be verified, just a quick search for MFP config
         */
        rsn_ie = brcmf_parse_tlvs((const u8 *)sme->ie, sme->ie_len,
                                  WLAN_EID_RSN);
        if (!rsn_ie)
                goto skip_mfp_config;
        ie = (const u8 *)rsn_ie;
        ie_len = rsn_ie->len + TLV_HDR_LEN;
        /* Skip unicast suite */
        offset = TLV_HDR_LEN + WPA_IE_VERSION_LEN + WPA_IE_MIN_OUI_LEN;
        if (offset + WPA_IE_SUITE_COUNT_LEN >= ie_len)
                goto skip_mfp_config;
        /* Skip multicast suite */
        count = ie[offset] + (ie[offset + 1] << 8);
        offset += WPA_IE_SUITE_COUNT_LEN + (count * WPA_IE_MIN_OUI_LEN);
        if (offset + WPA_IE_SUITE_COUNT_LEN >= ie_len)
                goto skip_mfp_config;
        /* Skip auth key management suite(s) */
        count = ie[offset] + (ie[offset + 1] << 8);
        offset += WPA_IE_SUITE_COUNT_LEN + (count * WPA_IE_MIN_OUI_LEN);
        if (offset + WPA_IE_SUITE_COUNT_LEN > ie_len)
                goto skip_mfp_config;
        /* Ready to read capabilities */
        mfp = BRCMF_MFP_NONE;
        rsn_cap = ie[offset] + (ie[offset + 1] << 8);
        if (rsn_cap & RSN_CAP_MFPR_MASK)
                mfp = BRCMF_MFP_REQUIRED;
        else if (rsn_cap & RSN_CAP_MFPC_MASK)
                mfp = BRCMF_MFP_CAPABLE;
        brcmf_fil_bsscfg_int_set(netdev_priv(ndev), "mfp", mfp);

skip_mfp_config:
        brcmf_dbg(CONN, "setting wpa_auth to %d\n", val);
        err = brcmf_fil_bsscfg_int_set(netdev_priv(ndev), "wpa_auth", val);
        if (err) {
                brcmf_err("could not set wpa_auth (%d)\n", err);
                return err;
        }

        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(netdev_priv(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
enum nl80211_auth_type brcmf_war_auth_type(struct brcmf_if *ifp,
                                           enum nl80211_auth_type type)
{
        if (type == NL80211_AUTHTYPE_AUTOMATIC &&
            brcmf_feat_is_quirk_enabled(ifp, BRCMF_FEAT_QUIRK_AUTO_AUTH)) {
                brcmf_dbg(CONN, "WAR: use OPEN instead of AUTO\n");
                type = NL80211_AUTHTYPE_OPEN_SYSTEM;
        }
        return type;
}

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 ieee80211_channel *chan = sme->channel;
        struct brcmf_join_params join_params;
        size_t join_params_size;
        const struct brcmf_tlv *rsn_ie;
        const struct brcmf_vs_tlv *wpa_ie;
        const void *ie;
        u32 ie_len;
        struct brcmf_ext_join_params_le *ext_join_params;
        u16 chanspec;
        s32 err = 0;
        u32 ssid_len;

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

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

        if (ifp->vif == cfg->p2p.bss_idx[P2PAPI_BSSCFG_PRIMARY].vif) {
                /* A normal (non P2P) connection request setup. */
                ie = NULL;
                ie_len = 0;
                /* find the WPA_IE */
                wpa_ie = brcmf_find_wpaie((u8 *)sme->ie, sme->ie_len);
                if (wpa_ie) {
                        ie = wpa_ie;
                        ie_len = wpa_ie->len + TLV_HDR_LEN;
                } else {
                        /* find the RSN_IE */
                        rsn_ie = brcmf_parse_tlvs((const u8 *)sme->ie,
                                                  sme->ie_len,
                                                  WLAN_EID_RSN);
                        if (rsn_ie) {
                                ie = rsn_ie;
                                ie_len = rsn_ie->len + TLV_HDR_LEN;
                        }
                }
                brcmf_fil_iovar_data_set(ifp, "wpaie", ie, ie_len);
        }

        err = brcmf_vif_set_mgmt_ie(ifp->vif, BRCMF_VNDR_IE_ASSOCREQ_FLAG,
                                    sme->ie, sme->ie_len);
        if (err)
                brcmf_err("Set Assoc REQ IE Failed\n");
        else
                brcmf_dbg(TRACE, "Applied Vndr IEs for Assoc request\n");

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

        if (chan) {
                cfg->channel =
                        ieee80211_frequency_to_channel(chan->center_freq);
                chanspec = channel_to_chanspec(&cfg->d11inf, chan);
                brcmf_dbg(CONN, "channel=%d, center_req=%d, chanspec=0x%04x\n",
                          cfg->channel, chan->center_freq, chanspec);
        } else {
                cfg->channel = 0;
                chanspec = 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;
        }

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

        err = brcmf_set_wsec_mode(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;
        }

        /* Join with specific BSSID and cached SSID
         * If SSID is zero join based on BSSID only
         */
        join_params_size = offsetof(struct brcmf_ext_join_params_le, assoc_le) +
                offsetof(struct brcmf_assoc_params_le, chanspec_list);
        if (cfg->channel)
                join_params_size += sizeof(u16);
        ext_join_params = kzalloc(join_params_size, GFP_KERNEL);
        if (ext_join_params == NULL) {
                err = -ENOMEM;
                goto done;
        }
        ssid_len = min_t(u32, sme->ssid_len, IEEE80211_MAX_SSID_LEN);
        ext_join_params->ssid_le.SSID_len = cpu_to_le32(ssid_len);
        memcpy(&ext_join_params->ssid_le.SSID, sme->ssid, ssid_len);
        if (ssid_len < IEEE80211_MAX_SSID_LEN)
                brcmf_dbg(CONN, "SSID \"%s\", len (%d)\n",
                          ext_join_params->ssid_le.SSID, ssid_len);

        /* Set up join scan parameters */
        ext_join_params->scan_le.scan_type = -1;
        ext_join_params->scan_le.home_time = cpu_to_le32(-1);

        if (sme->bssid)
                memcpy(&ext_join_params->assoc_le.bssid, sme->bssid, ETH_ALEN);
        else
                eth_broadcast_addr(ext_join_params->assoc_le.bssid);

        if (cfg->channel) {
                ext_join_params->assoc_le.chanspec_num = cpu_to_le32(1);

                ext_join_params->assoc_le.chanspec_list[0] =
                        cpu_to_le16(chanspec);
                /* Increase dwell time to receive probe response or detect
                 * beacon from target AP at a noisy air only during connect
                 * command.
                 */
                ext_join_params->scan_le.active_time =
                        cpu_to_le32(BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS);
                ext_join_params->scan_le.passive_time =
                        cpu_to_le32(BRCMF_SCAN_JOIN_PASSIVE_DWELL_TIME_MS);
                /* To sync with presence period of VSDB GO send probe request
                 * more frequently. Probe request will be stopped when it gets
                 * probe response from target AP/GO.
                 */
                ext_join_params->scan_le.nprobes =
                        cpu_to_le32(BRCMF_SCAN_JOIN_ACTIVE_DWELL_TIME_MS /
                                    BRCMF_SCAN_JOIN_PROBE_INTERVAL_MS);
        } else {
                ext_join_params->scan_le.active_time = cpu_to_le32(-1);
                ext_join_params->scan_le.passive_time = cpu_to_le32(-1);
                ext_join_params->scan_le.nprobes = cpu_to_le32(-1);
        }

        err  = brcmf_fil_bsscfg_data_set(ifp, "join", ext_join_params,
                                         join_params_size);
        kfree(ext_join_params);
        if (!err)
                /* This is it. join command worked, we are done */
                goto done;

        /* join command failed, fallback to set ssid */
        memset(&join_params, 0, sizeof(join_params));
        join_params_size = sizeof(join_params.ssid_le);

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

        if (sme->bssid)
                memcpy(join_params.params_le.bssid, sme->bssid, ETH_ALEN);
        else
                eth_broadcast_addr(join_params.params_le.bssid);

        if (cfg->channel) {
                join_params.params_le.chanspec_list[0] = cpu_to_le16(chanspec);
                join_params.params_le.chanspec_num = cpu_to_le32(1);
                join_params_size += sizeof(join_params.params_le);
        }
        err = brcmf_fil_cmd_data_set(ifp, BRCMF_C_SET_SSID,
                                     &join_params, join_params_size);
        if (err)
                brcmf_err("BRCMF_C_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);
        clear_bit(BRCMF_VIF_STATUS_CONNECTING, &ifp->vif->sme_state);
        cfg80211_disconnected(ndev, reason_code, NULL, 0, true, GFP_KERNEL);

        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);
        s32 err;
        s32 disable;
        u32 qdbm = 127;

        brcmf_dbg(TRACE, "Enter %d %d\n", type, mbm);
        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 (mbm < 0) {
                        brcmf_err("TX_POWER_FIXED - dbm is negative\n");
                        err = -EINVAL;
                        goto done;
                }
                qdbm =  MBM_TO_DBM(4 * mbm);
                if (qdbm > 127)
                        qdbm = 127;
                qdbm |= WL_TXPWR_OVERRIDE;
                break;
        default:
                brcmf_err("Unsupported type %d\n", type);
                err = -EINVAL;
                goto done;
        }
        /* 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);

        err = brcmf_fil_iovar_int_set(ifp, "qtxpower", qdbm);
        if (err)
                brcmf_err("qtxpower error (%d)\n", err);

done:
        brcmf_dbg(TRACE, "Exit %d (qdbm)\n", qdbm & ~WL_TXPWR_OVERRIDE);
        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 net_device *ndev = cfg_to_ndev(cfg);
        struct brcmf_if *ifp = netdev_priv(ndev);
        s32 qdbm = 0;
        s32 err;

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

        err = brcmf_fil_iovar_int_get(ifp, "qtxpower", &qdbm);
        if (err) {
                brcmf_err("error (%d)\n", err);
                goto done;
        }
        *dbm = (qdbm & ~WL_TXPWR_OVERRIDE) / 4;

done:
        brcmf_dbg(TRACE, "Exit (0x%x %d)\n", qdbm, *dbm);
        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_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;

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

        if (!check_vif_up(ifp->vif))
                return -EIO;

        if (key_idx >= BRCMF_MAX_DEFAULT_KEYS) {
                /* we ignore this key index in this case */
                return -EINVAL;
        }

        key = &ifp->vif->profile.key[key_idx];

        if (key->algo == CRYPTO_ALGO_OFF) {
                brcmf_dbg(CONN, "Ignore clearing of (never configured) key\n");
                return -EINVAL;
        }

        memset(key, 0, sizeof(*key));
        key->index = (u32)key_idx;
        key->flags = BRCMF_PRIMARY_KEY;

        /* Clear the key/index */
        err = send_key_to_dongle(ifp, key);

        brcmf_dbg(TRACE, "Exit\n");
        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;
        u8 keybuf[8];
        bool ext_key;

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

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

        if (params->key_len == 0)
                return brcmf_cfg80211_del_key(wiphy, ndev, key_idx, pairwise,
                                              mac_addr);

        if (params->key_len > sizeof(key->data)) {
                brcmf_err("Too long key length (%u)\n", params->key_len);
                return -EINVAL;
        }

        ext_key = false;
        if (mac_addr && (params->cipher != WLAN_CIPHER_SUITE_WEP40) &&
            (params->cipher != WLAN_CIPHER_SUITE_WEP104)) {
                brcmf_dbg(TRACE, "Ext key, mac %pM", mac_addr);
                ext_key = true;
        }

        key = &ifp->vif->profile.key[key_idx];
        memset(key, 0, sizeof(*key));
        if ((ext_key) && (!is_multicast_ether_addr(mac_addr)))
                memcpy((char *)&key->ea, (void *)mac_addr, ETH_ALEN);
        key->len = params->key_len;
        key->index = key_idx;
        memcpy(key->data, params->key, key->len);
        if (!ext_key)
                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 (!brcmf_is_apmode(ifp->vif)) {
                        brcmf_dbg(CONN, "Swapping RX/TX MIC 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(ifp, key);
        if (ext_key || 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_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;
        }
        if (wsec & 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");
                }
        } else if (wsec & TKIP_ENABLED) {
                params.cipher = WLAN_CIPHER_SUITE_TKIP;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_TKIP\n");
        } else if (wsec & AES_ENABLED) {
                params.cipher = WLAN_CIPHER_SUITE_AES_CMAC;
                brcmf_dbg(CONN, "WLAN_CIPHER_SUITE_AES_CMAC\n");
        } else  {
                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)
{
        struct brcmf_if *ifp = netdev_priv(ndev);

        brcmf_dbg(TRACE, "Enter key_idx %d\n", key_idx);

        if (brcmf_feat_is_enabled(ifp, BRCMF_FEAT_MFP))
                return 0;

        brcmf_dbg(INFO, "Not supported\n");

        return -EOPNOTSUPP;
}

static void
brcmf_cfg80211_reconfigure_wep(struct brcmf_if *ifp)
{
        s32 err;
        u8 key_idx;
        struct brcmf_wsec_key *key;
        s32 wsec;

        for (key_idx = 0; key_idx < BRCMF_MAX_DEFAULT_KEYS; key_idx++) {
                key = &ifp->vif->profile.key[key_idx];
                if ((key->algo == CRYPTO_ALGO_WEP1) ||
                    (key->algo == CRYPTO_ALGO_WEP128))
                        break;
        }
        if (key_idx == BRCMF_MAX_DEFAULT_KEYS)
                return;

        err = send_key_to_dongle(ifp, key);
        if (err) {
                brcmf_err("Setting WEP key failed (%d)\n", err);
                return;
        }
        err = brcmf_fil_bsscfg_int_get(ifp, "wsec", &wsec);
        if (err) {
                brcmf_err("get wsec error (%d)\n", err);
                return;
        }
        wsec |= WEP_ENABLED;
        err = brcmf_fil_bsscfg_int_set(ifp, "wsec", wsec);
        if (err)
                brcmf_err("set wsec error (%d)\n", err);
}

static void brcmf_convert_sta_flags(u32 fw_sta_flags, struct station_info *si)
{
        struct nl80211_sta_flag_update *sfu;

        brcmf_dbg(TRACE, "flags %08x\n", fw_sta_flags);
        si->filled |= BIT(NL80211_STA_INFO_STA_FLAGS);
        sfu = &si->sta_flags;
        sfu->mask = BIT(NL80211_STA_FLAG_WME) |
                    BIT(NL80211_STA_FLAG_AUTHENTICATED) |
                    BIT(NL80211_STA_FLAG_ASSOCIATED) |
                    BIT(NL80211_STA_FLAG_AUTHORIZED);
        if (fw_sta_flags & BRCMF_STA_WME)
                sfu->set |= BIT(NL80211_STA_FLAG_WME);
        if (fw_sta_flags & BRCMF_STA_AUTHE)
                sfu->set |= BIT(NL80211_STA_FLAG_AUTHENTICATED);
        if (fw_sta_flags & BRCMF_STA_ASSOC)
                sfu->set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
        if (fw_sta_flags & BRCMF_STA_AUTHO)
                sfu->set |= BIT(NL80211_STA_FLAG_AUTHORIZED);
}

static void brcmf_fill_bss_param(struct brcmf_if *ifp, struct station_info *si)
{
        struct {
                __le32 len;
                struct brcmf_bss_info_le bss_le;
        } *buf;
        u16 capability;
        int err;

        buf = kzalloc(WL_BSS_INFO_MAX, GFP_KERNEL);
        if (!buf)
                return;

        buf->len = cpu_to_le32(WL_BSS_INFO_MAX);
        err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_BSS_INFO, buf,
                                     WL_BSS_INFO_MAX);
        if (err) {
                brcmf_err("Failed to get bss info (%d)\n", err);
                return;
        }
        si->filled |= BIT(NL80211_STA_INFO_BSS_PARAM);
        si->bss_param.beacon_interval = le16_to_cpu(buf->bss_le.beacon_period);
        si->bss_param.dtim_period = buf->bss_le.dtim_period;
        capability = le16_to_cpu(buf->bss_le.capability);
        if (capability & IEEE80211_HT_STBC_PARAM_DUAL_CTS_PROT)
                si->bss_param.flags |= BSS_PARAM_FLAGS_CTS_PROT;
        if (capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
                si->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_PREAMBLE;
        if (capability & WLAN_CAPABILITY_SHORT_SLOT_TIME)
                si->bss_param.flags |= BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
}

static s32
brcmf_cfg80211_get_station_ibss(struct brcmf_if *ifp,
                                struct station_info *sinfo)
{
        struct brcmf_scb_val_le scbval;
        struct brcmf_pktcnt_le pktcnt;
        s32 err;
        u32 rate;
        u32 rssi;

        /* Get the current tx rate */
        err = brcmf_fil_cmd_int_get(ifp, BRCMF_C_GET_RATE, &rate);
        if (err < 0) {
                brcmf_err("BRCMF_C_GET_RATE error (%d)\n", err);
                return err;
        }
        sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
        sinfo->txrate.legacy = rate * 5;

        memset(&scbval, 0, sizeof(scbval));
        err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_RSSI, &scbval,
                                     sizeof(scbval));
        if (err) {
                brcmf_err("BRCMF_C_GET_RSSI error (%d)\n", err);
                return err;
        }
        rssi = le32_to_cpu(scbval.val);
        sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
        sinfo->signal = rssi;

        err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_GET_PKTCNTS, &pktcnt,
                                     sizeof(pktcnt));
        if (err) {
                brcmf_err("BRCMF_C_GET_GET_PKTCNTS error (%d)\n", err);
                return err;
        }
        sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS) |
                         BIT(NL80211_STA_INFO_RX_DROP_MISC) |
                         BIT(NL80211_STA_INFO_TX_PACKETS) |
                         BIT(NL80211_STA_INFO_TX_FAILED);
        sinfo->rx_packets = le32_to_cpu(pktcnt.rx_good_pkt);
        sinfo->rx_dropped_misc = le32_to_cpu(pktcnt.rx_bad_pkt);
        sinfo->tx_packets = le32_to_cpu(pktcnt.tx_good_pkt);
        sinfo->tx_failed  = le32_to_cpu(pktcnt.tx_bad_pkt);

        return 0;
}

static s32
brcmf_cfg80211_get_station(struct wiphy *wiphy, struct net_device *ndev,
                           const u8 *mac, struct station_info *sinfo)
{
        struct brcmf_if *ifp = netdev_priv(ndev);
        s32 err = 0;
        struct brcmf_sta_info_le sta_info_le;
        u32 sta_flags;
        u32 is_tdls_peer;
        s32 total_rssi;
        s32 count_rssi;
        u32 i;

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

        if (brcmf_is_ibssmode(ifp->vif))
                return brcmf_cfg80211_get_station_ibss(ifp, sinfo);

        memset(&sta_info_le, 0, sizeof(sta_info_le));
        memcpy(&sta_info_le, mac, ETH_ALEN);
        err = brcmf_fil_iovar_data_get(ifp, "tdls_sta_info",
                                       &sta_info_le,
                                       sizeof(sta_info_le));
        is_tdls_peer = !err;
        if (err) {
                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;
                }
        }
        brcmf_dbg(TRACE, "version %d\n", le16_to_cpu(sta_info_le.ver));
        sinfo->filled = BIT(NL80211_STA_INFO_INACTIVE_TIME);
        sinfo->inactive_time = le32_to_cpu(sta_info_le.idle) * 1000;
        sta_flags = le32_to_cpu(sta_info_le.flags);
        brcmf_convert_sta_flags(sta_flags, sinfo);
        sinfo->sta_flags.mask |= BIT(NL80211_STA_FLAG_TDLS_PEER);
        if (is_tdls_peer)
                sinfo->sta_flags.set |= BIT(NL80211_STA_FLAG_TDLS_PEER);
        else
                sinfo->sta_flags.set &= ~BIT(NL80211_STA_FLAG_TDLS_PEER);
        if (sta_flags & BRCMF_STA_ASSOC) {
                sinfo->filled |= BIT(NL80211_STA_INFO_CONNECTED_TIME);
                sinfo->connected_time = le32_to_cpu(sta_info_le.in);
                brcmf_fill_bss_param(ifp, sinfo);
        }
        if (sta_flags & BRCMF_STA_SCBSTATS) {
                sinfo->filled |= BIT(NL80211_STA_INFO_TX_FAILED);
                sinfo->tx_failed = le32_to_cpu(sta_info_le.tx_failures);
                sinfo->filled |= BIT(NL80211_STA_INFO_TX_PACKETS);
                sinfo->tx_packets = le32_to_cpu(sta_info_le.tx_pkts);
                sinfo->tx_packets += le32_to_cpu(sta_info_le.tx_mcast_pkts);
                sinfo->filled |= BIT(NL80211_STA_INFO_RX_PACKETS);
                sinfo->rx_packets = le32_to_cpu(sta_info_le.rx_ucast_pkts);
                sinfo->rx_packets += le32_to_cpu(sta_info_le.rx_mcast_pkts);
                if (sinfo->tx_packets) {
                        sinfo->filled |= BIT(NL80211_STA_INFO_TX_BITRATE);
                        sinfo->txrate.legacy =
                                le32_to_cpu(sta_info_le.tx_rate) / 100;
                }
                if (sinfo->rx_packets) {
                        sinfo->filled |= BIT(NL80211_STA_INFO_RX_BITRATE);
                        sinfo->rxrate.legacy =
                                le32_to_cpu(sta_info_le.rx_rate) / 100;
                }
                if (le16_to_cpu(sta_info_le.ver) >= 4) {
                        sinfo->filled |= BIT(NL80211_STA_INFO_TX_BYTES);
                        sinfo->tx_bytes = le64_to_cpu(sta_info_le.tx_tot_bytes);
                        sinfo->filled |= BIT(NL80211_STA_INFO_RX_BYTES);
                        sinfo->rx_bytes = le64_to_cpu(sta_info_le.rx_tot_bytes);
                }
                total_rssi = 0;
                count_rssi = 0;
                for (i = 0; i < BRCMF_ANT_MAX; i++) {
                        if (sta_info_le.rssi[i]) {
                                sinfo->chain_signal_avg[count_rssi] =
                                        sta_info_le.rssi[i];
                                sinfo->chain_signal[count_rssi] =
                                        sta_info_le.rssi[i];
                                total_rssi += sta_info_le.rssi[i];
                                count_rssi++;
                        }
                }
                if (count_rssi) {
                        sinfo->filled |= BIT(NL80211_STA_INFO_CHAIN_SIGNAL);
                        sinfo->chains = count_rssi;

                        sinfo->filled |= BIT(NL80211_STA_INFO_SIGNAL);
                        total_rssi /= count_rssi;
                        sinfo->signal = total_rssi;
                }
        }
done:
        brcmf_dbg(TRACE, "Exit\n");
        return err;
}

static int
brcmf_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *ndev,
                            int idx, u8 *mac, struct station_info *sinfo)
{
        struct brcmf_cfg80211_info *cfg = wiphy_to_cfg(wiphy);
        struct brcmf_if *ifp = netdev_priv(ndev);
        s32 err;

        brcmf_dbg(TRACE, "Enter, idx %d\n", idx);

        if (idx == 0) {
                cfg->assoclist.count = cpu_to_le32(BRCMF_MAX_ASSOCLIST);
                err = brcmf_fil_cmd_data_get(ifp, BRCMF_C_GET_ASSOCLIST,
                                             &cfg->assoclist,
                                             sizeof(cfg->assoclist));
                if (err) {
                        brcmf_err("BRCMF_C_GET_ASSOCLIST unsupported, err=%d\n",
                                  err);
                        cfg->assoclist.count = 0;
                        return -EOPNOTSUPP;
                }
        }
        if (idx < le32_to_cpu(cfg->assoclist.count)) {
                memcpy(mac, cfg->assoclist.mac[idx], ETH_ALEN);
                return brcmf_cfg80211_get_station(wiphy, ndev, mac, sinfo);
        }
        return -ENOENT;
}

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;
        /* Do not enable the power save after assoc if it is a p2p interface */
        if (ifp->vif->wdev.iftype == NL80211_IFTYPE_P2P_CLIENT) {
                brcmf_dbg(INFO, "Do not enable power save for P2P clients\n");
                pm = 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_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;
        struct brcmu_chan ch;
        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;
        }

        if (!bi->ctl_ch) {
                ch.chspec = le16_to_cpu(bi->chanspec);
                cfg->d11inf.decchspec(&ch);
                bi->ctl_ch = ch.chnum;
        }
        channel = bi->ctl_ch;

        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,
                                  CFG80211_BSS_FTYPE_UNKNOWN,
                                  (const u8 *)bi->BSSID,
                                  0, notify_capability,
                                  notify_interval, notify_ie,
                                  notify_ielen, notify_signal,
                                  GFP_KERNEL);

        if (!bss)
                return -ENOMEM;

        cfg80211_put_bss(wiphy, bss);

        return 0;
}

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 = (struct brcmf_scan_results *)cfg->escan_info.escan_buf;
        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 brcmf_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;
        struct brcmu_chan ch;
        u8 *buf = NULL;
        s32 err = 0;
        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);

        ch.chspec = le16_to_cpu(bi->chanspec);
        cfg->d11inf.decchspec(&ch);

        if (ch.band == BRCMU_CHAN_BAND_2G)
                band = wiphy->bands[IEEE80211_BAND_2GHZ];
        else
                band = wiphy->bands[IEEE80211_BAND_5GHZ];

        freq = ieee80211_channel_to_frequency(ch.chnum, band->band);
        cfg->channel = freq;
        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", ch.chnum, 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,
                                  CFG80211_BSS_FTYPE_UNKNOWN, bssid, 0,
                                  notify_capability, notify_interval,
                                  notify_ie, notify_ielen, notify_signal,
                                  GFP_KERNEL);

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

        cfg80211_put_bss(wiphy, bss);

CleanUp:

        kfree(buf);

        brcmf_dbg(TRACE, "Exit\n");

        return err;
}

static s32 brcmf_update_bss_info(struct brcmf_cfg80211_info *cfg,
                                 struct brcmf_if *ifp)
{
        struct brcmf_bss_info_le *bi;
        const 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;

        *(__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;
}

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->ifp, 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_inform_bss(cfg);
        brcmf_notify_escan_complete(cfg, cfg->escan_info.ifp, 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_cfg80211_info *cfg,
                              struct brcmf_bss_info_le *bss,
                              struct brcmf_bss_info_le *bss_info_le)
{
        struct brcmu_chan ch_bss, ch_bss_info_le;

        ch_bss.chspec = le16_to_cpu(bss->chanspec);
        cfg->d11inf.decchspec(&ch_bss);
        ch_bss_info_le.chspec = le16_to_cpu(bss_info_le->chanspec);
        cfg->d11inf.decchspec(&ch_bss_info_le);

        if (!memcmp(&bss_info_le->BSSID, &bss->BSSID, ETH_ALEN) &&
                ch_bss.band == ch_bss_info_le.band &&
                bss_info_le->SSID_len == bss->SSID_len &&
                !memcmp(bss_info_le->SSID, bss->SSID, bss_info_le->SSID_len)) {
                if ((bss->flags & BRCMF_BSS_RSSI_ON_CHANNEL) ==
                        (bss_info_le->flags & BRCMF_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 & BRCMF_BSS_RSSI_ON_CHANNEL) &&
                        (bss_info_le->flags & BRCMF_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 |= BRCMF_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;
        s32 status;
        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 (!test_bit(BRCMF_SCAN_STATUS_BUSY, &cfg->scan_status)) {
                brcmf_err("scan not ready, bsscfgidx=%d\n", ifp->bsscfgidx);
                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 (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;

                if (brcmf_p2p_scan_finding_common_channel(cfg, bss_info_le))
                        goto exit;

                if (!cfg->scan_request) {
                        brcmf_dbg(SCAN, "result without cfg80211 request\n");
                        goto exit;