cfg80211.c 96.9 KB
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/*
 * Marvell Wireless LAN device driver: CFG80211
 *
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Xinming Hu committed
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 * Copyright (C) 2011-2014, Marvell International Ltd.
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 *
 * This software file (the "File") is distributed by Marvell International
 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
 * (the "License").  You may use, redistribute and/or modify this File in
 * accordance with the terms and conditions of the License, a copy of which
 * is available by writing to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
 *
 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
 * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
 * this warranty disclaimer.
 */

#include "cfg80211.h"
#include "main.h"

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static char *reg_alpha2;
module_param(reg_alpha2, charp, 0);

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static const struct ieee80211_iface_limit mwifiex_ap_sta_limits[] = {
	{
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		.max = 2, .types = BIT(NL80211_IFTYPE_STATION) |
				   BIT(NL80211_IFTYPE_P2P_GO) |
				   BIT(NL80211_IFTYPE_P2P_CLIENT),
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	},
	{
		.max = 1, .types = BIT(NL80211_IFTYPE_AP),
	},
};

static const struct ieee80211_iface_combination mwifiex_iface_comb_ap_sta = {
	.limits = mwifiex_ap_sta_limits,
	.num_different_channels = 1,
	.n_limits = ARRAY_SIZE(mwifiex_ap_sta_limits),
	.max_interfaces = MWIFIEX_MAX_BSS_NUM,
	.beacon_int_infra_match = true,
};

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/*
 * This function maps the nl802.11 channel type into driver channel type.
 *
 * The mapping is as follows -
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 *      NL80211_CHAN_NO_HT     -> IEEE80211_HT_PARAM_CHA_SEC_NONE
 *      NL80211_CHAN_HT20      -> IEEE80211_HT_PARAM_CHA_SEC_NONE
 *      NL80211_CHAN_HT40PLUS  -> IEEE80211_HT_PARAM_CHA_SEC_ABOVE
 *      NL80211_CHAN_HT40MINUS -> IEEE80211_HT_PARAM_CHA_SEC_BELOW
 *      Others                 -> IEEE80211_HT_PARAM_CHA_SEC_NONE
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 */
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u8 mwifiex_chan_type_to_sec_chan_offset(enum nl80211_channel_type chan_type)
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{
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	switch (chan_type) {
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	case NL80211_CHAN_NO_HT:
	case NL80211_CHAN_HT20:
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		return IEEE80211_HT_PARAM_CHA_SEC_NONE;
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	case NL80211_CHAN_HT40PLUS:
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		return IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
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	case NL80211_CHAN_HT40MINUS:
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		return IEEE80211_HT_PARAM_CHA_SEC_BELOW;
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	default:
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		return IEEE80211_HT_PARAM_CHA_SEC_NONE;
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	}
}

/*
 * This function checks whether WEP is set.
 */
static int
mwifiex_is_alg_wep(u32 cipher)
{
	switch (cipher) {
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	case WLAN_CIPHER_SUITE_WEP40:
	case WLAN_CIPHER_SUITE_WEP104:
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		return 1;
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	default:
		break;
	}
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	return 0;
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}

/*
 * This function retrieves the private structure from kernel wiphy structure.
 */
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static void *mwifiex_cfg80211_get_adapter(struct wiphy *wiphy)
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{
	return (void *) (*(unsigned long *) wiphy_priv(wiphy));
}

/*
 * CFG802.11 operation handler to delete a network key.
 */
static int
mwifiex_cfg80211_del_key(struct wiphy *wiphy, struct net_device *netdev,
			 u8 key_index, bool pairwise, const u8 *mac_addr)
{
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	struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
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	const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
	const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
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	if (mwifiex_set_encode(priv, NULL, NULL, 0, key_index, peer_mac, 1)) {
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		wiphy_err(wiphy, "deleting the crypto keys\n");
		return -EFAULT;
	}

	wiphy_dbg(wiphy, "info: crypto keys deleted\n");
	return 0;
}

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/*
 * This function forms an skb for management frame.
 */
static int
mwifiex_form_mgmt_frame(struct sk_buff *skb, const u8 *buf, size_t len)
{
	u8 addr[ETH_ALEN] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
	u16 pkt_len;
	u32 tx_control = 0, pkt_type = PKT_TYPE_MGMT;

	pkt_len = len + ETH_ALEN;

	skb_reserve(skb, MWIFIEX_MIN_DATA_HEADER_LEN +
		    MWIFIEX_MGMT_FRAME_HEADER_SIZE + sizeof(pkt_len));
	memcpy(skb_push(skb, sizeof(pkt_len)), &pkt_len, sizeof(pkt_len));

	memcpy(skb_push(skb, sizeof(tx_control)),
	       &tx_control, sizeof(tx_control));

	memcpy(skb_push(skb, sizeof(pkt_type)), &pkt_type, sizeof(pkt_type));

	/* Add packet data and address4 */
	memcpy(skb_put(skb, sizeof(struct ieee80211_hdr_3addr)), buf,
	       sizeof(struct ieee80211_hdr_3addr));
	memcpy(skb_put(skb, ETH_ALEN), addr, ETH_ALEN);
	memcpy(skb_put(skb, len - sizeof(struct ieee80211_hdr_3addr)),
	       buf + sizeof(struct ieee80211_hdr_3addr),
	       len - sizeof(struct ieee80211_hdr_3addr));

	skb->priority = LOW_PRIO_TID;
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	__net_timestamp(skb);
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	return 0;
}

/*
 * CFG802.11 operation handler to transmit a management frame.
 */
static int
mwifiex_cfg80211_mgmt_tx(struct wiphy *wiphy, struct wireless_dev *wdev,
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			 struct cfg80211_mgmt_tx_params *params, u64 *cookie)
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{
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	const u8 *buf = params->buf;
	size_t len = params->len;
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	struct sk_buff *skb;
	u16 pkt_len;
	const struct ieee80211_mgmt *mgmt;
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	struct mwifiex_txinfo *tx_info;
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	struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);

	if (!buf || !len) {
		wiphy_err(wiphy, "invalid buffer and length\n");
		return -EFAULT;
	}

	mgmt = (const struct ieee80211_mgmt *)buf;
	if (GET_BSS_ROLE(priv) != MWIFIEX_BSS_ROLE_STA &&
	    ieee80211_is_probe_resp(mgmt->frame_control)) {
		/* Since we support offload probe resp, we need to skip probe
		 * resp in AP or GO mode */
		wiphy_dbg(wiphy,
			  "info: skip to send probe resp in AP or GO mode\n");
		return 0;
	}

	pkt_len = len + ETH_ALEN;
	skb = dev_alloc_skb(MWIFIEX_MIN_DATA_HEADER_LEN +
			    MWIFIEX_MGMT_FRAME_HEADER_SIZE +
			    pkt_len + sizeof(pkt_len));

	if (!skb) {
		wiphy_err(wiphy, "allocate skb failed for management frame\n");
		return -ENOMEM;
	}

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	tx_info = MWIFIEX_SKB_TXCB(skb);
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	memset(tx_info, 0, sizeof(*tx_info));
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	tx_info->bss_num = priv->bss_num;
	tx_info->bss_type = priv->bss_type;
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	tx_info->pkt_len = pkt_len;
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	mwifiex_form_mgmt_frame(skb, buf, len);
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	*cookie = prandom_u32() | 1;
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	if (ieee80211_is_action(mgmt->frame_control))
		skb = mwifiex_clone_skb_for_tx_status(priv,
						      skb,
				MWIFIEX_BUF_FLAG_ACTION_TX_STATUS, cookie);
	else
		cfg80211_mgmt_tx_status(wdev, *cookie, buf, len, true,
					GFP_ATOMIC);

	mwifiex_queue_tx_pkt(priv, skb);
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	wiphy_dbg(wiphy, "info: management frame transmitted\n");
	return 0;
}

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/*
 * CFG802.11 operation handler to register a mgmt frame.
 */
static void
mwifiex_cfg80211_mgmt_frame_register(struct wiphy *wiphy,
				     struct wireless_dev *wdev,
				     u16 frame_type, bool reg)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
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	u32 mask;
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	if (reg)
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		mask = priv->mgmt_frame_mask | BIT(frame_type >> 4);
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	else
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		mask = priv->mgmt_frame_mask & ~BIT(frame_type >> 4);

	if (mask != priv->mgmt_frame_mask) {
		priv->mgmt_frame_mask = mask;
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		mwifiex_send_cmd(priv, HostCmd_CMD_MGMT_FRAME_REG,
				 HostCmd_ACT_GEN_SET, 0,
				 &priv->mgmt_frame_mask, false);
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		wiphy_dbg(wiphy, "info: mgmt frame registered\n");
	}
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}

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/*
 * CFG802.11 operation handler to remain on channel.
 */
static int
mwifiex_cfg80211_remain_on_channel(struct wiphy *wiphy,
				   struct wireless_dev *wdev,
				   struct ieee80211_channel *chan,
				   unsigned int duration, u64 *cookie)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
	int ret;

	if (!chan || !cookie) {
		wiphy_err(wiphy, "Invalid parameter for ROC\n");
		return -EINVAL;
	}

	if (priv->roc_cfg.cookie) {
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		wiphy_dbg(wiphy, "info: ongoing ROC, cookie = 0x%llx\n",
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			  priv->roc_cfg.cookie);
		return -EBUSY;
	}

	ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_SET, chan,
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					 duration);
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	if (!ret) {
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		*cookie = prandom_u32() | 1;
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		priv->roc_cfg.cookie = *cookie;
		priv->roc_cfg.chan = *chan;

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		cfg80211_ready_on_channel(wdev, *cookie, chan,
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					  duration, GFP_ATOMIC);

		wiphy_dbg(wiphy, "info: ROC, cookie = 0x%llx\n", *cookie);
	}

	return ret;
}

/*
 * CFG802.11 operation handler to cancel remain on channel.
 */
static int
mwifiex_cfg80211_cancel_remain_on_channel(struct wiphy *wiphy,
					  struct wireless_dev *wdev, u64 cookie)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(wdev->netdev);
	int ret;

	if (cookie != priv->roc_cfg.cookie)
		return -ENOENT;

	ret = mwifiex_remain_on_chan_cfg(priv, HostCmd_ACT_GEN_REMOVE,
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					 &priv->roc_cfg.chan, 0);
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	if (!ret) {
		cfg80211_remain_on_channel_expired(wdev, cookie,
						   &priv->roc_cfg.chan,
						   GFP_ATOMIC);

		memset(&priv->roc_cfg, 0, sizeof(struct mwifiex_roc_cfg));

		wiphy_dbg(wiphy, "info: cancel ROC, cookie = 0x%llx\n", cookie);
	}

	return ret;
}

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/*
 * CFG802.11 operation handler to set Tx power.
 */
static int
mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
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			      struct wireless_dev *wdev,
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			      enum nl80211_tx_power_setting type,
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			      int mbm)
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{
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	struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
	struct mwifiex_private *priv;
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	struct mwifiex_power_cfg power_cfg;
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	int dbm = MBM_TO_DBM(mbm);
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	if (type == NL80211_TX_POWER_FIXED) {
		power_cfg.is_power_auto = 0;
		power_cfg.power_level = dbm;
	} else {
		power_cfg.is_power_auto = 1;
	}

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	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);

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	return mwifiex_set_tx_power(priv, &power_cfg);
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}

/*
 * CFG802.11 operation handler to set Power Save option.
 *
 * The timeout value, if provided, is currently ignored.
 */
static int
mwifiex_cfg80211_set_power_mgmt(struct wiphy *wiphy,
				struct net_device *dev,
				bool enabled, int timeout)
{
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	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
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	u32 ps_mode;
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	if (timeout)
		wiphy_dbg(wiphy,
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			  "info: ignore timeout value for IEEE Power Save\n");
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	ps_mode = enabled;
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	return mwifiex_drv_set_power(priv, &ps_mode);
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}

/*
 * CFG802.11 operation handler to set the default network key.
 */
static int
mwifiex_cfg80211_set_default_key(struct wiphy *wiphy, struct net_device *netdev,
				 u8 key_index, bool unicast,
				 bool multicast)
{
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	struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
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	/* Return if WEP key not configured */
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	if (!priv->sec_info.wep_enabled)
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		return 0;

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	if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) {
		priv->wep_key_curr_index = key_index;
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	} else if (mwifiex_set_encode(priv, NULL, NULL, 0, key_index,
				      NULL, 0)) {
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		wiphy_err(wiphy, "set default Tx key index\n");
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		return -EFAULT;
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	}
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	return 0;
}

/*
 * CFG802.11 operation handler to add a network key.
 */
static int
mwifiex_cfg80211_add_key(struct wiphy *wiphy, struct net_device *netdev,
			 u8 key_index, bool pairwise, const u8 *mac_addr,
			 struct key_params *params)
{
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	struct mwifiex_private *priv = mwifiex_netdev_get_priv(netdev);
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	struct mwifiex_wep_key *wep_key;
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	const u8 bc_mac[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
	const u8 *peer_mac = pairwise ? mac_addr : bc_mac;
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	if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP &&
	    (params->cipher == WLAN_CIPHER_SUITE_WEP40 ||
	     params->cipher == WLAN_CIPHER_SUITE_WEP104)) {
		if (params->key && params->key_len) {
			wep_key = &priv->wep_key[key_index];
			memset(wep_key, 0, sizeof(struct mwifiex_wep_key));
			memcpy(wep_key->key_material, params->key,
			       params->key_len);
			wep_key->key_index = key_index;
			wep_key->key_length = params->key_len;
			priv->sec_info.wep_enabled = 1;
		}
		return 0;
	}

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	if (mwifiex_set_encode(priv, params, params->key, params->key_len,
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			       key_index, peer_mac, 0)) {
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		wiphy_err(wiphy, "crypto keys added\n");
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		return -EFAULT;
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	}
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	return 0;
}

/*
 * This function sends domain information to the firmware.
 *
 * The following information are passed to the firmware -
 *      - Country codes
 *      - Sub bands (first channel, number of channels, maximum Tx power)
 */
static int mwifiex_send_domain_info_cmd_fw(struct wiphy *wiphy)
{
	u8 no_of_triplet = 0;
	struct ieee80211_country_ie_triplet *t;
	u8 no_of_parsed_chan = 0;
	u8 first_chan = 0, next_chan = 0, max_pwr = 0;
	u8 i, flag = 0;
	enum ieee80211_band band;
	struct ieee80211_supported_band *sband;
	struct ieee80211_channel *ch;
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	struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
	struct mwifiex_private *priv;
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	struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;

	/* Set country code */
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	domain_info->country_code[0] = adapter->country_code[0];
	domain_info->country_code[1] = adapter->country_code[1];
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	domain_info->country_code[2] = ' ';

	band = mwifiex_band_to_radio_type(adapter->config_bands);
	if (!wiphy->bands[band]) {
		wiphy_err(wiphy, "11D: setting domain info in FW\n");
		return -1;
	}

	sband = wiphy->bands[band];

	for (i = 0; i < sband->n_channels ; i++) {
		ch = &sband->channels[i];
		if (ch->flags & IEEE80211_CHAN_DISABLED)
			continue;

		if (!flag) {
			flag = 1;
			first_chan = (u32) ch->hw_value;
			next_chan = first_chan;
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			max_pwr = ch->max_power;
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			no_of_parsed_chan = 1;
			continue;
		}

		if (ch->hw_value == next_chan + 1 &&
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		    ch->max_power == max_pwr) {
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			next_chan++;
			no_of_parsed_chan++;
		} else {
			t = &domain_info->triplet[no_of_triplet];
			t->chans.first_channel = first_chan;
			t->chans.num_channels = no_of_parsed_chan;
			t->chans.max_power = max_pwr;
			no_of_triplet++;
			first_chan = (u32) ch->hw_value;
			next_chan = first_chan;
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			max_pwr = ch->max_power;
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			no_of_parsed_chan = 1;
		}
	}

	if (flag) {
		t = &domain_info->triplet[no_of_triplet];
		t->chans.first_channel = first_chan;
		t->chans.num_channels = no_of_parsed_chan;
		t->chans.max_power = max_pwr;
		no_of_triplet++;
	}

	domain_info->no_of_triplet = no_of_triplet;
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	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);

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	if (mwifiex_send_cmd(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
			     HostCmd_ACT_GEN_SET, 0, NULL, false)) {
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		wiphy_err(wiphy, "11D: setting domain info in FW\n");
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		return -1;
	}
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	return 0;
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}

/*
 * CFG802.11 regulatory domain callback function.
 *
 * This function is called when the regulatory domain is changed due to the
 * following reasons -
 *      - Set by driver
 *      - Set by system core
 *      - Set by user
 *      - Set bt Country IE
 */
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static void mwifiex_reg_notifier(struct wiphy *wiphy,
				 struct regulatory_request *request)
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{
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	struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
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	struct mwifiex_private *priv = mwifiex_get_priv(adapter,
							MWIFIEX_BSS_ROLE_ANY);
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	wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for %c%c\n",
		  request->alpha2[0], request->alpha2[1]);
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	switch (request->initiator) {
	case NL80211_REGDOM_SET_BY_DRIVER:
	case NL80211_REGDOM_SET_BY_CORE:
	case NL80211_REGDOM_SET_BY_USER:
	case NL80211_REGDOM_SET_BY_COUNTRY_IE:
		break;
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	default:
		wiphy_err(wiphy, "unknown regdom initiator: %d\n",
			  request->initiator);
		return;
	}

	/* Don't send world or same regdom info to firmware */
	if (strncmp(request->alpha2, "00", 2) &&
	    strncmp(request->alpha2, adapter->country_code,
		    sizeof(request->alpha2))) {
		memcpy(adapter->country_code, request->alpha2,
		       sizeof(request->alpha2));
		mwifiex_send_domain_info_cmd_fw(wiphy);
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		mwifiex_dnld_txpwr_table(priv);
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	}
}

/*
 * This function sets the fragmentation threshold.
 *
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 * The fragmentation threshold value must lie between MWIFIEX_FRAG_MIN_VALUE
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 * and MWIFIEX_FRAG_MAX_VALUE.
 */
static int
mwifiex_set_frag(struct mwifiex_private *priv, u32 frag_thr)
{
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	if (frag_thr < MWIFIEX_FRAG_MIN_VALUE ||
	    frag_thr > MWIFIEX_FRAG_MAX_VALUE)
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		frag_thr = MWIFIEX_FRAG_MAX_VALUE;
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	return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_SNMP_MIB,
				HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
				&frag_thr, true);
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}

/*
 * This function sets the RTS threshold.
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 * The rts value must lie between MWIFIEX_RTS_MIN_VALUE
 * and MWIFIEX_RTS_MAX_VALUE.
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 */
static int
mwifiex_set_rts(struct mwifiex_private *priv, u32 rts_thr)
{
	if (rts_thr < MWIFIEX_RTS_MIN_VALUE || rts_thr > MWIFIEX_RTS_MAX_VALUE)
		rts_thr = MWIFIEX_RTS_MAX_VALUE;

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	return mwifiex_send_cmd(priv, HostCmd_CMD_802_11_SNMP_MIB,
				HostCmd_ACT_GEN_SET, RTS_THRESH_I,
				&rts_thr, true);
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}

/*
 * CFG802.11 operation handler to set wiphy parameters.
 *
 * This function can be used to set the RTS threshold and the
 * Fragmentation threshold of the driver.
 */
static int
mwifiex_cfg80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
{
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	struct mwifiex_adapter *adapter = mwifiex_cfg80211_get_adapter(wiphy);
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	struct mwifiex_private *priv;
	struct mwifiex_uap_bss_param *bss_cfg;
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	int ret;

	priv = mwifiex_get_priv(adapter, MWIFIEX_BSS_ROLE_ANY);
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	switch (priv->bss_role) {
	case MWIFIEX_BSS_ROLE_UAP:
		if (priv->bss_started) {
			dev_err(adapter->dev,
				"cannot change wiphy params when bss started");
			return -EINVAL;
		}
604

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		bss_cfg = kzalloc(sizeof(*bss_cfg), GFP_KERNEL);
		if (!bss_cfg)
			return -ENOMEM;
608

609
		mwifiex_set_sys_config_invalid_data(bss_cfg);
610

611 612 613 614 615 616
		if (changed & WIPHY_PARAM_RTS_THRESHOLD)
			bss_cfg->rts_threshold = wiphy->rts_threshold;
		if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
			bss_cfg->frag_threshold = wiphy->frag_threshold;
		if (changed & WIPHY_PARAM_RETRY_LONG)
			bss_cfg->retry_limit = wiphy->retry_long;
617

618 619 620 621 622 623 624 625 626 627 628
		ret = mwifiex_send_cmd(priv, HostCmd_CMD_UAP_SYS_CONFIG,
				       HostCmd_ACT_GEN_SET,
				       UAP_BSS_PARAMS_I, bss_cfg,
				       false);

		kfree(bss_cfg);
		if (ret) {
			wiphy_err(wiphy, "Failed to set wiphy phy params\n");
			return ret;
		}
		break;
629 630

		case MWIFIEX_BSS_ROLE_STA:
631 632 633 634 635 636 637 638 639 640
		if (priv->media_connected) {
			dev_err(adapter->dev,
				"cannot change wiphy params when connected");
			return -EINVAL;
		}
		if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
			ret = mwifiex_set_rts(priv,
					      wiphy->rts_threshold);
			if (ret)
				return ret;
641
		}
642 643 644 645 646 647 648
		if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
			ret = mwifiex_set_frag(priv,
					       wiphy->frag_threshold);
			if (ret)
				return ret;
		}
		break;
649 650 651
	}

	return 0;
652 653
}

654 655 656 657 658
static int
mwifiex_cfg80211_deinit_p2p(struct mwifiex_private *priv)
{
	u16 mode = P2P_MODE_DISABLE;

659 660
	if (mwifiex_send_cmd(priv, HostCmd_CMD_P2P_MODE_CFG,
			     HostCmd_ACT_GEN_SET, 0, &mode, true))
661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679
		return -1;

	return 0;
}

/*
 * This function initializes the functionalities for P2P client.
 * The P2P client initialization sequence is:
 * disable -> device -> client
 */
static int
mwifiex_cfg80211_init_p2p_client(struct mwifiex_private *priv)
{
	u16 mode;

	if (mwifiex_cfg80211_deinit_p2p(priv))
		return -1;

	mode = P2P_MODE_DEVICE;
680 681
	if (mwifiex_send_cmd(priv, HostCmd_CMD_P2P_MODE_CFG,
			     HostCmd_ACT_GEN_SET, 0, &mode, true))
682 683 684
		return -1;

	mode = P2P_MODE_CLIENT;
685 686
	if (mwifiex_send_cmd(priv, HostCmd_CMD_P2P_MODE_CFG,
			     HostCmd_ACT_GEN_SET, 0, &mode, true))
687 688 689 690 691
		return -1;

	return 0;
}

692 693 694 695 696 697 698 699 700 701 702 703 704 705
/*
 * This function initializes the functionalities for P2P GO.
 * The P2P GO initialization sequence is:
 * disable -> device -> GO
 */
static int
mwifiex_cfg80211_init_p2p_go(struct mwifiex_private *priv)
{
	u16 mode;

	if (mwifiex_cfg80211_deinit_p2p(priv))
		return -1;

	mode = P2P_MODE_DEVICE;
706 707
	if (mwifiex_send_cmd(priv, HostCmd_CMD_P2P_MODE_CFG,
			     HostCmd_ACT_GEN_SET, 0, &mode, true))
708 709 710
		return -1;

	mode = P2P_MODE_GO;
711 712
	if (mwifiex_send_cmd(priv, HostCmd_CMD_P2P_MODE_CFG,
			     HostCmd_ACT_GEN_SET, 0, &mode, true))
713 714
		return -1;

715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771
	return 0;
}

static int mwifiex_deinit_priv_params(struct mwifiex_private *priv)
{
	priv->mgmt_frame_mask = 0;
	if (mwifiex_send_cmd(priv, HostCmd_CMD_MGMT_FRAME_REG,
			     HostCmd_ACT_GEN_SET, 0,
			     &priv->mgmt_frame_mask, false)) {
		dev_warn(priv->adapter->dev,
			 "could not unregister mgmt frame rx\n");
		return -1;
	}

	mwifiex_deauthenticate(priv, NULL);
	mwifiex_free_priv(priv);
	priv->wdev.iftype = NL80211_IFTYPE_UNSPECIFIED;
	priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;
	priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;

	return 0;
}

static int
mwifiex_init_new_priv_params(struct mwifiex_private *priv,
			     struct net_device *dev,
			     enum nl80211_iftype type)
{
	mwifiex_init_priv(priv);

	priv->bss_mode = type;
	priv->wdev.iftype = type;

	mwifiex_init_priv_params(priv, priv->netdev);
	priv->bss_started = 0;

	switch (type) {
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_ADHOC:
		priv->bss_role =  MWIFIEX_BSS_ROLE_STA;
		priv->bss_type = MWIFIEX_BSS_TYPE_STA;
		break;
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
		priv->bss_role =  MWIFIEX_BSS_ROLE_STA;
		priv->bss_type = MWIFIEX_BSS_TYPE_P2P;
		break;
	case NL80211_IFTYPE_AP:
		priv->bss_type = MWIFIEX_BSS_TYPE_UAP;
		priv->bss_role = MWIFIEX_BSS_ROLE_UAP;
		break;
	default:
		dev_err(priv->adapter->dev,
			"%s: changing to %d not supported\n",
			dev->name, type);
		return -EOPNOTSUPP;
	}
772 773 774 775

	return 0;
}

776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957
static int
mwifiex_change_vif_to_p2p(struct net_device *dev,
			  enum nl80211_iftype curr_iftype,
			  enum nl80211_iftype type, u32 *flags,
			  struct vif_params *params)
{
	struct mwifiex_private *priv;
	struct mwifiex_adapter *adapter;

	priv = mwifiex_netdev_get_priv(dev);

	if (!priv)
		return -1;

	adapter = priv->adapter;

	if (adapter->curr_iface_comb.p2p_intf ==
	    adapter->iface_limit.p2p_intf) {
		dev_err(adapter->dev,
			"cannot create multiple P2P ifaces\n");
		return -1;
	}

	dev_dbg(priv->adapter->dev, "%s: changing role to p2p\n", dev->name);

	if (mwifiex_deinit_priv_params(priv))
		return -1;
	if (mwifiex_init_new_priv_params(priv, dev, type))
		return -1;

	switch (type) {
	case NL80211_IFTYPE_P2P_CLIENT:
		if (mwifiex_cfg80211_init_p2p_client(priv))
			return -EFAULT;
		break;
	case NL80211_IFTYPE_P2P_GO:
		if (mwifiex_cfg80211_init_p2p_go(priv))
			return -EFAULT;
		break;
	default:
		dev_err(priv->adapter->dev,
			"%s: changing to %d not supported\n",
			dev->name, type);
		return -EOPNOTSUPP;
	}

	if (mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
			     HostCmd_ACT_GEN_SET, 0, NULL, true))
		return -1;

	if (mwifiex_sta_init_cmd(priv, false, false))
		return -1;

	switch (curr_iftype) {
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_ADHOC:
		adapter->curr_iface_comb.sta_intf--;
		break;
	case NL80211_IFTYPE_AP:
		adapter->curr_iface_comb.uap_intf--;
		break;
	default:
		break;
	}

	adapter->curr_iface_comb.p2p_intf++;
	dev->ieee80211_ptr->iftype = type;

	return 0;
}

static int
mwifiex_change_vif_to_sta_adhoc(struct net_device *dev,
				enum nl80211_iftype curr_iftype,
				enum nl80211_iftype type, u32 *flags,
				struct vif_params *params)
{
	struct mwifiex_private *priv;
	struct mwifiex_adapter *adapter;

	priv = mwifiex_netdev_get_priv(dev);

	if (!priv)
		return -1;

	adapter = priv->adapter;

	if ((curr_iftype != NL80211_IFTYPE_P2P_CLIENT &&
	     curr_iftype != NL80211_IFTYPE_P2P_GO) &&
	    (adapter->curr_iface_comb.sta_intf ==
	     adapter->iface_limit.sta_intf)) {
		dev_err(adapter->dev,
			"cannot create multiple station/adhoc ifaces\n");
		return -1;
	}

	if (type == NL80211_IFTYPE_STATION)
		dev_notice(adapter->dev,
			   "%s: changing role to station\n", dev->name);
	else
		dev_notice(adapter->dev,
			   "%s: changing role to adhoc\n", dev->name);

	if (mwifiex_deinit_priv_params(priv))
		return -1;
	if (mwifiex_init_new_priv_params(priv, dev, type))
		return -1;
	if (mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
			     HostCmd_ACT_GEN_SET, 0, NULL, true))
		return -1;
	if (mwifiex_sta_init_cmd(priv, false, false))
		return -1;

	switch (curr_iftype) {
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
		adapter->curr_iface_comb.p2p_intf--;
		break;
	case NL80211_IFTYPE_AP:
		adapter->curr_iface_comb.uap_intf--;
		break;
	default:
		break;
	}

	adapter->curr_iface_comb.sta_intf++;
	dev->ieee80211_ptr->iftype = type;
	return 0;
}

static int
mwifiex_change_vif_to_ap(struct net_device *dev,
			 enum nl80211_iftype curr_iftype,
			 enum nl80211_iftype type, u32 *flags,
			 struct vif_params *params)
{
	struct mwifiex_private *priv;
	struct mwifiex_adapter *adapter;

	priv = mwifiex_netdev_get_priv(dev);

	if (!priv)
		return -1;

	adapter = priv->adapter;

	if (adapter->curr_iface_comb.uap_intf ==
	    adapter->iface_limit.uap_intf) {
		dev_err(adapter->dev,
			"cannot create multiple AP ifaces\n");
		return -1;
	}

	dev_notice(adapter->dev, "%s: changing role to AP\n", dev->name);

	if (mwifiex_deinit_priv_params(priv))
		return -1;
	if (mwifiex_init_new_priv_params(priv, dev, type))
		return -1;
	if (mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
			     HostCmd_ACT_GEN_SET, 0, NULL, true))
		return -1;
	if (mwifiex_sta_init_cmd(priv, false, false))
		return -1;

	switch (curr_iftype) {
	case NL80211_IFTYPE_P2P_CLIENT:
	case NL80211_IFTYPE_P2P_GO:
		adapter->curr_iface_comb.p2p_intf--;
		break;
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_ADHOC:
		adapter->curr_iface_comb.sta_intf--;
		break;
	default:
		break;
	}

	adapter->curr_iface_comb.uap_intf++;
	dev->ieee80211_ptr->iftype = type;
	return 0;
}
958 959 960 961 962 963 964 965 966 967
/*
 * CFG802.11 operation handler to change interface type.
 */
static int
mwifiex_cfg80211_change_virtual_intf(struct wiphy *wiphy,
				     struct net_device *dev,
				     enum nl80211_iftype type, u32 *flags,
				     struct vif_params *params)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
968
	enum nl80211_iftype curr_iftype = dev->ieee80211_ptr->iftype;
969

970
	switch (curr_iftype) {
971
	case NL80211_IFTYPE_ADHOC:
972 973
		switch (type) {
		case NL80211_IFTYPE_STATION:
974 975 976 977 978 979 980 981 982 983 984 985 986 987 988
			priv->bss_mode = type;
			priv->sec_info.authentication_mode =
						   NL80211_AUTHTYPE_OPEN_SYSTEM;
			dev->ieee80211_ptr->iftype = type;
			mwifiex_deauthenticate(priv, NULL);
			return mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
						HostCmd_ACT_GEN_SET, 0, NULL,
						true);
		case NL80211_IFTYPE_P2P_CLIENT:
		case NL80211_IFTYPE_P2P_GO:
			return mwifiex_change_vif_to_p2p(dev, curr_iftype,
							 type, flags, params);
		case NL80211_IFTYPE_AP:
			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
							flags, params);
989 990 991 992 993 994 995 996 997
		case NL80211_IFTYPE_UNSPECIFIED:
			wiphy_warn(wiphy, "%s: kept type as IBSS\n", dev->name);
		case NL80211_IFTYPE_ADHOC:	/* This shouldn't happen */
			return 0;
		default:
			wiphy_err(wiphy, "%s: changing to %d not supported\n",
				  dev->name, type);
			return -EOPNOTSUPP;
		}
998 999
		break;
	case NL80211_IFTYPE_STATION:
1000 1001
		switch (type) {
		case NL80211_IFTYPE_ADHOC:
1002 1003 1004
			priv->bss_mode = type;
			priv->sec_info.authentication_mode =
						   NL80211_AUTHTYPE_OPEN_SYSTEM;
1005
			dev->ieee80211_ptr->iftype = type;
1006 1007 1008 1009 1010
			mwifiex_deauthenticate(priv, NULL);
			return mwifiex_send_cmd(priv, HostCmd_CMD_SET_BSS_MODE,
						HostCmd_ACT_GEN_SET, 0, NULL,
						true);
		case NL80211_IFTYPE_P2P_CLIENT:
1011
		case NL80211_IFTYPE_P2P_GO:
1012 1013 1014 1015 1016
			return mwifiex_change_vif_to_p2p(dev, curr_iftype,
							 type, flags, params);
		case NL80211_IFTYPE_AP:
			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
							flags, params);
1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028
		case NL80211_IFTYPE_UNSPECIFIED:
			wiphy_warn(wiphy, "%s: kept type as STA\n", dev->name);
		case NL80211_IFTYPE_STATION:	/* This shouldn't happen */
			return 0;
		default:
			wiphy_err(wiphy, "%s: changing to %d not supported\n",
				  dev->name, type);
			return -EOPNOTSUPP;
		}
		break;
	case NL80211_IFTYPE_AP:
		switch (type) {
1029 1030 1031 1032 1033 1034 1035 1036 1037 1038
		case NL80211_IFTYPE_ADHOC:
		case NL80211_IFTYPE_STATION:
			return mwifiex_change_vif_to_sta_adhoc(dev, curr_iftype,
							       type, flags,
							       params);
			break;
		case NL80211_IFTYPE_P2P_CLIENT:
		case NL80211_IFTYPE_P2P_GO:
			return mwifiex_change_vif_to_p2p(dev, curr_iftype,
							 type, flags, params);
1039 1040 1041 1042 1043 1044 1045 1046 1047
		case NL80211_IFTYPE_UNSPECIFIED:
			wiphy_warn(wiphy, "%s: kept type as AP\n", dev->name);
		case NL80211_IFTYPE_AP:		/* This shouldn't happen */
			return 0;
		default:
			wiphy_err(wiphy, "%s: changing to %d not supported\n",
				  dev->name, type);
			return -EOPNOTSUPP;
		}
1048
		break;
1049
	case NL80211_IFTYPE_P2P_CLIENT:
1050
	case NL80211_IFTYPE_P2P_GO:
1051 1052
		switch (type) {
		case NL80211_IFTYPE_STATION:
1053
			if (mwifiex_cfg80211_init_p2p_client(priv))
1054 1055
				return -EFAULT;
			dev->ieee80211_ptr->iftype = type;
1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
			break;
		case NL80211_IFTYPE_ADHOC:
			if (mwifiex_cfg80211_deinit_p2p(priv))
				return -EFAULT;
			return mwifiex_change_vif_to_sta_adhoc(dev, curr_iftype,
							       type, flags,
							       params);
			break;
		case NL80211_IFTYPE_AP:
			if (mwifiex_cfg80211_deinit_p2p(priv))
				return -EFAULT;
			return mwifiex_change_vif_to_ap(dev, curr_iftype, type,
							flags, params);
		case NL80211_IFTYPE_UNSPECIFIED:
			wiphy_warn(wiphy, "%s: kept type as P2P\n", dev->name);
		case NL80211_IFTYPE_P2P_CLIENT:
		case NL80211_IFTYPE_P2P_GO:
1073 1074
			return 0;
		default:
1075 1076
			wiphy_err(wiphy, "%s: changing to %d not supported\n",
				  dev->name, type);
1077 1078 1079
			return -EOPNOTSUPP;
		}
		break;
1080
	default:
1081 1082 1083
		wiphy_err(wiphy, "%s: unknown iftype: %d\n",
			  dev->name, dev->ieee80211_ptr->iftype);
		return -EOPNOTSUPP;
1084 1085
	}

1086

1087
	return 0;
1088 1089
}

1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112
static void
mwifiex_parse_htinfo(struct mwifiex_private *priv, u8 tx_htinfo,
		     struct rate_info *rate)
{
	struct mwifiex_adapter *adapter = priv->adapter;

	if (adapter->is_hw_11ac_capable) {
		/* bit[1-0]: 00=LG 01=HT 10=VHT */
		if (tx_htinfo & BIT(0)) {
			/* HT */
			rate->mcs = priv->tx_rate;
			rate->flags |= RATE_INFO_FLAGS_MCS;
		}
		if (tx_htinfo & BIT(1)) {
			/* VHT */
			rate->mcs = priv->tx_rate & 0x0F;
			rate->flags |= RATE_INFO_FLAGS_VHT_MCS;
		}

		if (tx_htinfo & (BIT(1) | BIT(0))) {
			/* HT or VHT */
			switch (tx_htinfo & (BIT(3) | BIT(2))) {
			case 0:
1113
				rate->bw = RATE_INFO_BW_20;
1114 1115
				break;
			case (BIT(2)):
1116
				rate->bw = RATE_INFO_BW_40;
1117 1118
				break;
			case (BIT(3)):
1119
				rate->bw = RATE_INFO_BW_80;
1120 1121
				break;
			case (BIT(3) | BIT(2)):
1122
				rate->bw = RATE_INFO_BW_160;
1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141
				break;
			}

			if (tx_htinfo & BIT(4))
				rate->flags |= RATE_INFO_FLAGS_SHORT_GI;

			if ((priv->tx_rate >> 4) == 1)
				rate->nss = 2;
			else
				rate->nss = 1;
		}
	} else {
		/*
		 * Bit 0 in tx_htinfo indicates that current Tx rate
		 * is 11n rate. Valid MCS index values for us are 0 to 15.
		 */
		if ((tx_htinfo & BIT(0)) && (priv->tx_rate < 16)) {
			rate->mcs = priv->tx_rate;
			rate->flags |= RATE_INFO_FLAGS_MCS;
1142
			rate->bw = RATE_INFO_BW_20;
1143
			if (tx_htinfo & BIT(1))
1144
				rate->bw = RATE_INFO_BW_40;
1145 1146 1147 1148 1149 1150
			if (tx_htinfo & BIT(2))
				rate->flags |= RATE_INFO_FLAGS_SHORT_GI;
		}
	}
}

1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165
/*
 * This function dumps the station information on a buffer.
 *
 * The following information are shown -
 *      - Total bytes transmitted
 *      - Total bytes received
 *      - Total packets transmitted
 *      - Total packets received
 *      - Signal quality level
 *      - Transmission rate
 */
static int
mwifiex_dump_station_info(struct mwifiex_private *priv,
			  struct station_info *sinfo)
{
1166
	u32 rate;
1167

1168 1169 1170 1171
	sinfo->filled = BIT(NL80211_STA_INFO_RX_BYTES) | BIT(NL80211_STA_INFO_TX_BYTES) |
			BIT(NL80211_STA_INFO_RX_PACKETS) | BIT(NL80211_STA_INFO_TX_PACKETS) |
			BIT(NL80211_STA_INFO_TX_BITRATE) |
			BIT(NL80211_STA_INFO_SIGNAL) | BIT(NL80211_STA_INFO_SIGNAL_AVG);
1172 1173

	/* Get signal information from the firmware */
1174 1175
	if (mwifiex_send_cmd(priv, HostCmd_CMD_RSSI_INFO,
			     HostCmd_ACT_GEN_GET, 0, NULL, true)) {
1176 1177
		dev_err(priv->adapter->dev, "failed to get signal information\n");
		return -EFAULT;
1178 1179 1180 1181
	}

	if (mwifiex_drv_get_data_rate(priv, &rate)) {
		dev_err(priv->adapter->dev, "getting data rate\n");
1182
		return -EFAULT;
1183 1184
	}

1185
	/* Get DTIM period information from firmware */
1186 1187 1188
	mwifiex_send_cmd(priv, HostCmd_CMD_802_11_SNMP_MIB,
			 HostCmd_ACT_GEN_GET, DTIM_PERIOD_I,
			 &priv->dtim_period, true);
1189

1190
	mwifiex_parse_htinfo(priv, priv->tx_htinfo, &sinfo->txrate);
1191

1192
	sinfo->signal_avg = priv->bcn_rssi_avg;
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	sinfo->rx_bytes = priv->stats.rx_bytes;
	sinfo->tx_bytes = priv->stats.tx_bytes;
	sinfo->rx_packets = priv->stats.rx_packets;
	sinfo->tx_packets = priv->stats.tx_packets;
1197
	sinfo->signal = priv->bcn_rssi_avg;
1198
	/* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
1199
	sinfo->txrate.legacy = rate * 5;
1200

1201
	if (priv->bss_mode == NL80211_IFTYPE_STATION) {
1202
		sinfo->filled |= BIT(NL80211_STA_INFO_BSS_PARAM);
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		sinfo->bss_param.flags = 0;
		if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
						WLAN_CAPABILITY_SHORT_PREAMBLE)
			sinfo->bss_param.flags |=
					BSS_PARAM_FLAGS_SHORT_PREAMBLE;
		if (priv->curr_bss_params.bss_descriptor.cap_info_bitmap &
						WLAN_CAPABILITY_SHORT_SLOT_TIME)
			sinfo->bss_param.flags |=
					BSS_PARAM_FLAGS_SHORT_SLOT_TIME;
1212
		sinfo->bss_param.dtim_period = priv->dtim_period;
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		sinfo->bss_param.beacon_interval =
			priv->curr_bss_params.bss_descriptor.beacon_period;
	}

1217
	return 0;
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}

/*
 * CFG802.11 operation handler to get station information.
 *
 * This function only works in connected mode, and dumps the
 * requested station information, if available.
 */
static int
mwifiex_cfg80211_get_station(struct wiphy *wiphy, struct net_device *dev,
1228
			     const u8 *mac, struct station_info *sinfo)
1229 1230 1231 1232 1233 1234 1235 1236
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);

	if (!priv->media_connected)
		return -ENOENT;
	if (memcmp(mac, priv->cfg_bssid, ETH_ALEN))
		return -ENOENT;

1237
	return mwifiex_dump_station_info(priv, sinfo);
1238 1239
}

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/*
 * CFG802.11 operation handler to dump station information.
 */
static int
mwifiex_cfg80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
			      int idx, u8 *mac, struct station_info *sinfo)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);

	if (!priv->media_connected || idx)
		return -ENOENT;

	memcpy(mac, priv->cfg_bssid, ETH_ALEN);

	return mwifiex_dump_station_info(priv, sinfo);
}

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static int
mwifiex_cfg80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
			     int idx, struct survey_info *survey)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
	struct mwifiex_chan_stats *pchan_stats = priv->adapter->chan_stats;
	enum ieee80211_band band;

	dev_dbg(priv->adapter->dev, "dump_survey idx=%d\n", idx);

	memset(survey, 0, sizeof(struct survey_info));

	if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) &&
	    priv->media_connected && idx == 0) {
			u8 curr_bss_band = priv->curr_bss_params.band;
			u32 chan = priv->curr_bss_params.bss_descriptor.channel;

			band = mwifiex_band_to_radio_type(curr_bss_band);
			survey->channel = ieee80211_get_channel(wiphy,
				ieee80211_channel_to_frequency(chan, band));

			if (priv->bcn_nf_last) {
				survey->filled = SURVEY_INFO_NOISE_DBM;
				survey->noise = priv->bcn_nf_last;
			}
			return 0;
	}

	if (idx >= priv->adapter->num_in_chan_stats)
		return -ENOENT;

	if (!pchan_stats[idx].cca_scan_dur)
		return 0;

	band = pchan_stats[idx].bandcfg;
	survey->channel = ieee80211_get_channel(wiphy,
	    ieee80211_channel_to_frequency(pchan_stats[idx].chan_num, band));
	survey->filled = SURVEY_INFO_NOISE_DBM |
1295 1296
			 SURVEY_INFO_TIME |
			 SURVEY_INFO_TIME_BUSY;
1297
	survey->noise = pchan_stats[idx].noise;
1298 1299
	survey->time = pchan_stats[idx].cca_scan_dur;
	survey->time_busy = pchan_stats[idx].cca_busy_dur;
1300 1301 1302 1303

	return 0;
}

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/* Supported rates to be advertised to the cfg80211 */
static struct ieee80211_rate mwifiex_rates[] = {
	{.bitrate = 10, .hw_value = 2, },
	{.bitrate = 20, .hw_value = 4, },
	{.bitrate = 55, .hw_value = 11, },
	{.bitrate = 110, .hw_value = 22, },
	{.bitrate = 60, .hw_value = 12, },
	{.bitrate = 90, .hw_value = 18, },
	{.bitrate = 120, .hw_value = 24, },
	{.bitrate = 180, .hw_value = 36, },
	{.bitrate = 240, .hw_value = 48, },
	{.bitrate = 360, .hw_value = 72, },
	{.bitrate = 480, .hw_value = 96, },
	{.bitrate = 540, .hw_value = 108, },
};

/* Channel definitions to be advertised to cfg80211 */
static struct ieee80211_channel mwifiex_channels_2ghz[] = {
	{.center_freq = 2412, .hw_value = 1, },
	{.center_freq = 2417, .hw_value = 2, },
	{.center_freq = 2422, .hw_value = 3, },
	{.center_freq = 2427, .hw_value = 4, },
	{.center_freq = 2432, .hw_value = 5, },
	{.center_freq = 2437, .hw_value = 6, },
	{.center_freq = 2442, .hw_value = 7, },
	{.center_freq = 2447, .hw_value = 8, },