cfg80211.c 39.5 KB
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/*
 * Marvell Wireless LAN device driver: CFG80211
 *
 * Copyright (C) 2011, Marvell International Ltd.
 *
 * 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"

/*
 * 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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static u8
mwifiex_cfg80211_channel_type_to_sec_chan_offset(enum nl80211_channel_type
						 channel_type)
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{
	switch (channel_type) {
	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.
 */
static void *mwifiex_cfg80211_get_priv(struct wiphy *wiphy)
{
	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)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);

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	if (mwifiex_set_encode(priv, NULL, 0, key_index, 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;
}

/*
 * CFG802.11 operation handler to set Tx power.
 */
static int
mwifiex_cfg80211_set_tx_power(struct wiphy *wiphy,
			      enum nl80211_tx_power_setting type,
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			      int mbm)
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{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
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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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	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)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
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	u32 ps_mode;
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	if (timeout)
		wiphy_dbg(wiphy,
			"info: ignoring the 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)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);

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	/* Return if WEP key not configured */
	if (priv->sec_info.wep_status == MWIFIEX_802_11_WEP_DISABLED)
		return 0;

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	if (mwifiex_set_encode(priv, NULL, 0, key_index, 0)) {
		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)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);

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	if (mwifiex_set_encode(priv, params->key, params->key_len,
							key_index, 0)) {
		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;
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
	struct mwifiex_adapter *adapter = priv->adapter;
	struct mwifiex_802_11d_domain_reg *domain_info = &adapter->domain_reg;

	/* Set country code */
	domain_info->country_code[0] = priv->country_code[0];
	domain_info->country_code[1] = priv->country_code[1];
	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;
			max_pwr = ch->max_power;
			no_of_parsed_chan = 1;
			continue;
		}

		if (ch->hw_value == next_chan + 1 &&
				ch->max_power == max_pwr) {
			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;
			max_pwr = ch->max_power;
			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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	if (mwifiex_send_cmd_async(priv, HostCmd_CMD_802_11D_DOMAIN_INFO,
				     HostCmd_ACT_GEN_SET, 0, NULL)) {
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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
 */
static int mwifiex_reg_notifier(struct wiphy *wiphy,
		struct regulatory_request *request)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);

	wiphy_dbg(wiphy, "info: cfg80211 regulatory domain callback for domain"
			" %c%c\n", request->alpha2[0], request->alpha2[1]);

	memcpy(priv->country_code, request->alpha2, sizeof(request->alpha2));

	switch (request->initiator) {
	case NL80211_REGDOM_SET_BY_DRIVER:
	case NL80211_REGDOM_SET_BY_CORE:
	case NL80211_REGDOM_SET_BY_USER:
		break;
		/* Todo: apply driver specific changes in channel flags based
		   on the request initiator if necessary. */
	case NL80211_REGDOM_SET_BY_COUNTRY_IE:
		break;
	}
	mwifiex_send_domain_info_cmd_fw(wiphy);

	return 0;
}

/*
 * This function sets the RF channel.
 *
 * This function creates multiple IOCTL requests, populates them accordingly
 * and issues them to set the band/channel and frequency.
 */
static int
mwifiex_set_rf_channel(struct mwifiex_private *priv,
		       struct ieee80211_channel *chan,
		       enum nl80211_channel_type channel_type)
{
	struct mwifiex_chan_freq_power cfp;
	u32 config_bands = 0;
	struct wiphy *wiphy = priv->wdev->wiphy;
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	struct mwifiex_adapter *adapter = priv->adapter;
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	if (chan) {
		/* Set appropriate bands */
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		if (chan->band == IEEE80211_BAND_2GHZ) {
			if (channel_type == NL80211_CHAN_NO_HT)
				if (priv->adapter->config_bands == BAND_B ||
					  priv->adapter->config_bands == BAND_G)
					config_bands =
						priv->adapter->config_bands;
				else
					config_bands = BAND_B | BAND_G;
			else
				config_bands = BAND_B | BAND_G | BAND_GN;
		} else {
			if (channel_type == NL80211_CHAN_NO_HT)
				config_bands = BAND_A;
			else
				config_bands = BAND_AN | BAND_A;
		}
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		if (!((config_bands | adapter->fw_bands) &
						~adapter->fw_bands)) {
			adapter->config_bands = config_bands;
			if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
				adapter->adhoc_start_band = config_bands;
				if ((config_bands & BAND_GN) ||
						(config_bands & BAND_AN))
					adapter->adhoc_11n_enabled = true;
				else
					adapter->adhoc_11n_enabled = false;
			}
		}
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		adapter->sec_chan_offset =
			mwifiex_cfg80211_channel_type_to_sec_chan_offset
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			(channel_type);
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		adapter->channel_type = channel_type;
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		mwifiex_send_domain_info_cmd_fw(wiphy);
	}

	wiphy_dbg(wiphy, "info: setting band %d, channel offset %d and "
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		"mode %d\n", config_bands, adapter->sec_chan_offset,
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		priv->bss_mode);
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	if (!chan)
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		return 0;
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	memset(&cfp, 0, sizeof(cfp));
	cfp.freq = chan->center_freq;
	cfp.channel = ieee80211_frequency_to_channel(chan->center_freq);

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	if (mwifiex_bss_set_channel(priv, &cfp))
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		return -EFAULT;

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	return mwifiex_drv_change_adhoc_chan(priv, cfp.channel);
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}

/*
 * CFG802.11 operation handler to set channel.
 *
 * This function can only be used when station is not connected.
 */
static int
mwifiex_cfg80211_set_channel(struct wiphy *wiphy, struct net_device *dev,
			     struct ieee80211_channel *chan,
			     enum nl80211_channel_type channel_type)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);

	if (priv->media_connected) {
		wiphy_err(wiphy, "This setting is valid only when station "
				"is not connected\n");
		return -EINVAL;
	}

	return mwifiex_set_rf_channel(priv, chan, channel_type);
}

/*
 * 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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	int ret;
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	if (frag_thr < MWIFIEX_FRAG_MIN_VALUE
	    || frag_thr > MWIFIEX_FRAG_MAX_VALUE)
		return -EINVAL;

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	/* Send request to firmware */
	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
				    HostCmd_ACT_GEN_SET, FRAG_THRESH_I,
				    &frag_thr);
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	return ret;
}

/*
 * 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_sync(priv, HostCmd_CMD_802_11_SNMP_MIB,
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				    HostCmd_ACT_GEN_SET, RTS_THRESH_I,
				    &rts_thr);
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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)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
	int ret = 0;

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	if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
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		ret = mwifiex_set_rts(priv, wiphy->rts_threshold);
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		if (ret)
			return ret;
	}
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	if (changed & WIPHY_PARAM_FRAG_THRESHOLD)
		ret = mwifiex_set_frag(priv, wiphy->frag_threshold);

	return ret;
}

/*
 * 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)
{
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	int ret;
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	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);

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	if (priv->bss_mode == type) {
		wiphy_warn(wiphy, "already set to required type\n");
		return 0;
	}

	priv->bss_mode = type;
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	switch (type) {
	case NL80211_IFTYPE_ADHOC:
		dev->ieee80211_ptr->iftype = NL80211_IFTYPE_ADHOC;
		wiphy_dbg(wiphy, "info: setting interface type to adhoc\n");
		break;
	case NL80211_IFTYPE_STATION:
		dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
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		wiphy_dbg(wiphy, "info: setting interface type to managed\n");
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		break;
	case NL80211_IFTYPE_UNSPECIFIED:
		dev->ieee80211_ptr->iftype = NL80211_IFTYPE_STATION;
		wiphy_dbg(wiphy, "info: setting interface type to auto\n");
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		return 0;
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	default:
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		wiphy_err(wiphy, "unknown interface type: %d\n", type);
		return -EINVAL;
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	}

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	mwifiex_deauthenticate(priv, NULL);
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	priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM;
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	ret = mwifiex_send_cmd_sync(priv, HostCmd_CMD_SET_BSS_MODE,
				    HostCmd_ACT_GEN_SET, 0, NULL);
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	return ret;
}

/*
 * 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)
{
	struct mwifiex_ds_get_signal signal;
	struct mwifiex_rate_cfg rate;
	int ret = 0;

	sinfo->filled = STATION_INFO_RX_BYTES | STATION_INFO_TX_BYTES |
		STATION_INFO_RX_PACKETS |
		STATION_INFO_TX_PACKETS
		| STATION_INFO_SIGNAL | STATION_INFO_TX_BITRATE;

	/* Get signal information from the firmware */
	memset(&signal, 0, sizeof(struct mwifiex_ds_get_signal));
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	if (mwifiex_get_signal_info(priv, &signal)) {
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		dev_err(priv->adapter->dev, "getting signal information\n");
		ret = -EFAULT;
	}

	if (mwifiex_drv_get_data_rate(priv, &rate)) {
		dev_err(priv->adapter->dev, "getting data rate\n");
		ret = -EFAULT;
	}

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	/*
	 * Bit 0 in tx_htinfo indicates that current Tx rate is 11n rate. Valid
	 * MCS index values for us are 0 to 7.
	 */
	if ((priv->tx_htinfo & BIT(0)) && (priv->tx_rate < 8)) {
		sinfo->txrate.mcs = priv->tx_rate;
		sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;
		/* 40MHz rate */
		if (priv->tx_htinfo & BIT(1))
			sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;
		/* SGI enabled */
		if (priv->tx_htinfo & BIT(2))
			sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;
	}

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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;
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	sinfo->signal = priv->qual_level;
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	/* bit rate is in 500 kb/s units. Convert it to 100kb/s units */
	sinfo->txrate.legacy = rate.rate * 5;
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	return ret;
}

/*
 * 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,
			     u8 *mac, struct station_info *sinfo)
{
	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;

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	return mwifiex_dump_station_info(priv, sinfo);
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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 = 220, .hw_value = 44, },
	{.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, },
	{.bitrate = 720, .hw_value = 144, },
};

/* 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, },
	{.center_freq = 2452, .hw_value = 9, },
	{.center_freq = 2457, .hw_value = 10, },
	{.center_freq = 2462, .hw_value = 11, },
	{.center_freq = 2467, .hw_value = 12, },
	{.center_freq = 2472, .hw_value = 13, },
	{.center_freq = 2484, .hw_value = 14, },
};

static struct ieee80211_supported_band mwifiex_band_2ghz = {
	.channels = mwifiex_channels_2ghz,
	.n_channels = ARRAY_SIZE(mwifiex_channels_2ghz),
	.bitrates = mwifiex_rates,
	.n_bitrates = 14,
};

static struct ieee80211_channel mwifiex_channels_5ghz[] = {
	{.center_freq = 5040, .hw_value = 8, },
	{.center_freq = 5060, .hw_value = 12, },
	{.center_freq = 5080, .hw_value = 16, },
	{.center_freq = 5170, .hw_value = 34, },
	{.center_freq = 5190, .hw_value = 38, },
	{.center_freq = 5210, .hw_value = 42, },
	{.center_freq = 5230, .hw_value = 46, },
	{.center_freq = 5180, .hw_value = 36, },
	{.center_freq = 5200, .hw_value = 40, },
	{.center_freq = 5220, .hw_value = 44, },
	{.center_freq = 5240, .hw_value = 48, },
	{.center_freq = 5260, .hw_value = 52, },
	{.center_freq = 5280, .hw_value = 56, },
	{.center_freq = 5300, .hw_value = 60, },
	{.center_freq = 5320, .hw_value = 64, },
	{.center_freq = 5500, .hw_value = 100, },
	{.center_freq = 5520, .hw_value = 104, },
	{.center_freq = 5540, .hw_value = 108, },
	{.center_freq = 5560, .hw_value = 112, },
	{.center_freq = 5580, .hw_value = 116, },
	{.center_freq = 5600, .hw_value = 120, },
	{.center_freq = 5620, .hw_value = 124, },
	{.center_freq = 5640, .hw_value = 128, },
	{.center_freq = 5660, .hw_value = 132, },
	{.center_freq = 5680, .hw_value = 136, },
	{.center_freq = 5700, .hw_value = 140, },
	{.center_freq = 5745, .hw_value = 149, },
	{.center_freq = 5765, .hw_value = 153, },
	{.center_freq = 5785, .hw_value = 157, },
	{.center_freq = 5805, .hw_value = 161, },
	{.center_freq = 5825, .hw_value = 165, },
};

static struct ieee80211_supported_band mwifiex_band_5ghz = {
	.channels = mwifiex_channels_5ghz,
	.n_channels = ARRAY_SIZE(mwifiex_channels_5ghz),
	.bitrates = mwifiex_rates - 4,
	.n_bitrates = ARRAY_SIZE(mwifiex_rates) + 4,
};


/* Supported crypto cipher suits to be advertised to cfg80211 */

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

679 680 681 682 683 684 685 686 687 688 689 690 691
/*
 * CFG802.11 operation handler for setting bit rates.
 *
 * Function selects legacy bang B/G/BG from corresponding bitrates selection.
 * Currently only 2.4GHz band is supported.
 */
static int mwifiex_cfg80211_set_bitrate_mask(struct wiphy *wiphy,
				struct net_device *dev,
				const u8 *peer,
				const struct cfg80211_bitrate_mask *mask)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
	int index = 0, mode = 0, i;
692
	struct mwifiex_adapter *adapter = priv->adapter;
693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713

	/* Currently only 2.4GHz is supported */
	for (i = 0; i < mwifiex_band_2ghz.n_bitrates; i++) {
		/*
		 * Rates below 6 Mbps in the table are CCK rates; 802.11b
		 * and from 6 they are OFDM; 802.11G
		 */
		if (mwifiex_rates[i].bitrate == 60) {
			index = 1 << i;
			break;
		}
	}

	if (mask->control[IEEE80211_BAND_2GHZ].legacy < index) {
		mode = BAND_B;
	} else {
		mode = BAND_G;
		if (mask->control[IEEE80211_BAND_2GHZ].legacy % index)
			mode |=  BAND_B;
	}

714 715 716 717 718 719 720
	if (!((mode | adapter->fw_bands) & ~adapter->fw_bands)) {
		adapter->config_bands = mode;
		if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
			adapter->adhoc_start_band = mode;
			adapter->adhoc_11n_enabled = false;
		}
	}
721
	adapter->sec_chan_offset = IEEE80211_HT_PARAM_CHA_SEC_NONE;
722
	adapter->channel_type = NL80211_CHAN_NO_HT;
723 724 725 726 727 728 729 730

	wiphy_debug(wiphy, "info: device configured in 802.11%s%s mode\n",
				(mode & BAND_B) ? "b" : "",
				(mode & BAND_G) ? "g" : "");

	return 0;
}

731 732 733 734 735 736 737 738 739 740 741 742
/*
 * CFG802.11 operation handler for disconnection request.
 *
 * This function does not work when there is already a disconnection
 * procedure going on.
 */
static int
mwifiex_cfg80211_disconnect(struct wiphy *wiphy, struct net_device *dev,
			    u16 reason_code)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);

743
	if (mwifiex_deauthenticate(priv, NULL))
744 745 746 747 748
		return -EFAULT;

	wiphy_dbg(wiphy, "info: successfully disconnected from %pM:"
		" reason code %d\n", priv->cfg_bssid, reason_code);

A
Amitkumar Karwar 已提交
749
	memset(priv->cfg_bssid, 0, ETH_ALEN);
750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768

	return 0;
}

/*
 * This function informs the CFG802.11 subsystem of a new IBSS.
 *
 * The following information are sent to the CFG802.11 subsystem
 * to register the new IBSS. If we do not register the new IBSS,
 * a kernel panic will result.
 *      - SSID
 *      - SSID length
 *      - BSSID
 *      - Channel
 */
static int mwifiex_cfg80211_inform_ibss_bss(struct mwifiex_private *priv)
{
	struct ieee80211_channel *chan;
	struct mwifiex_bss_info bss_info;
769
	struct cfg80211_bss *bss;
770
	int ie_len;
771
	u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];
772
	enum ieee80211_band band;
773

774 775
	if (mwifiex_get_bss_info(priv, &bss_info))
		return -1;
776 777 778 779 780 781 782 783 784

	ie_buf[0] = WLAN_EID_SSID;
	ie_buf[1] = bss_info.ssid.ssid_len;

	memcpy(&ie_buf[sizeof(struct ieee_types_header)],
			&bss_info.ssid.ssid,
			bss_info.ssid.ssid_len);
	ie_len = ie_buf[1] + sizeof(struct ieee_types_header);

785
	band = mwifiex_band_to_radio_type(priv->curr_bss_params.band);
786 787
	chan = __ieee80211_get_channel(priv->wdev->wiphy,
			ieee80211_channel_to_frequency(bss_info.bss_chan,
788
						       band));
789

790
	bss = cfg80211_inform_bss(priv->wdev->wiphy, chan,
791 792
		bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
		0, ie_buf, ie_len, 0, GFP_KERNEL);
793
	cfg80211_put_bss(bss);
794 795
	memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);

796
	return 0;
797 798 799 800 801 802 803 804 805 806 807 808 809 810
}

/*
 * This function connects with a BSS.
 *
 * This function handles both Infra and Ad-Hoc modes. It also performs
 * validity checking on the provided parameters, disconnects from the
 * current BSS (if any), sets up the association/scan parameters,
 * including security settings, and performs specific SSID scan before
 * trying to connect.
 *
 * For Infra mode, the function returns failure if the specified SSID
 * is not found in scan table. However, for Ad-Hoc mode, it can create
 * the IBSS if it does not exist. On successful completion in either case,
811
 * the function notifies the CFG802.11 subsystem of the new BSS connection.
812 813 814 815 816 817 818
 */
static int
mwifiex_cfg80211_assoc(struct mwifiex_private *priv, size_t ssid_len, u8 *ssid,
		       u8 *bssid, int mode, struct ieee80211_channel *channel,
		       struct cfg80211_connect_params *sme, bool privacy)
{
	struct mwifiex_802_11_ssid req_ssid;
819
	int ret, auth_type = 0;
820 821
	struct cfg80211_bss *bss = NULL;
	u8 is_scanning_required = 0;
822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837

	memset(&req_ssid, 0, sizeof(struct mwifiex_802_11_ssid));

	req_ssid.ssid_len = ssid_len;
	if (ssid_len > IEEE80211_MAX_SSID_LEN) {
		dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
		return -EINVAL;
	}

	memcpy(req_ssid.ssid, ssid, ssid_len);
	if (!req_ssid.ssid_len || req_ssid.ssid[0] < 0x20) {
		dev_err(priv->adapter->dev, "invalid SSID - aborting\n");
		return -EINVAL;
	}

	/* disconnect before try to associate */
838
	mwifiex_deauthenticate(priv, NULL);
839 840 841

	if (channel)
		ret = mwifiex_set_rf_channel(priv, channel,
842
						priv->adapter->channel_type);
843

844 845 846 847 848 849
	/* As this is new association, clear locally stored
	 * keys and security related flags */
	priv->sec_info.wpa_enabled = false;
	priv->sec_info.wpa2_enabled = false;
	priv->wep_key_curr_index = 0;
	ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);
850

851
	if (mode == NL80211_IFTYPE_ADHOC) {
852 853 854
		/* "privacy" is set only for ad-hoc mode */
		if (privacy) {
			/*
855
			 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
856 857 858 859
			 * the firmware can find a matching network from the
			 * scan. The cfg80211 does not give us the encryption
			 * mode at this stage so just setting it to WEP here.
			 */
860
			priv->sec_info.encryption_mode =
861
					WLAN_CIPHER_SUITE_WEP104;
862
			priv->sec_info.authentication_mode =
863
					NL80211_AUTHTYPE_OPEN_SYSTEM;
864 865 866 867 868 869 870 871
		}

		goto done;
	}

	/* Now handle infra mode. "sme" is valid for infra mode only */
	if (sme->auth_type == NL80211_AUTHTYPE_AUTOMATIC
			|| sme->auth_type == NL80211_AUTHTYPE_OPEN_SYSTEM)
872
		auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
873
	else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
874
		auth_type = NL80211_AUTHTYPE_SHARED_KEY;
875 876

	if (sme->crypto.n_ciphers_pairwise) {
877 878
		priv->sec_info.encryption_mode =
						sme->crypto.ciphers_pairwise[0];
879
		priv->sec_info.authentication_mode = auth_type;
880 881 882
	}

	if (sme->crypto.cipher_group) {
883
		priv->sec_info.encryption_mode = sme->crypto.cipher_group;
884
		priv->sec_info.authentication_mode = auth_type;
885 886 887 888 889
	}
	if (sme->ie)
		ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);

	if (sme->key) {
890
		if (mwifiex_is_alg_wep(priv->sec_info.encryption_mode)) {
891 892 893
			dev_dbg(priv->adapter->dev,
				"info: setting wep encryption"
				" with key len %d\n", sme->key_len);
894
			priv->wep_key_curr_index = sme->key_idx;
895 896 897 898 899 900
			ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
							sme->key_idx, 0);
		}
	}
done:
	/* Do specific SSID scanning */
901
	if (mwifiex_request_scan(priv, &req_ssid)) {
902 903 904 905
		dev_err(priv->adapter->dev, "scan error\n");
		return -EFAULT;
	}

906 907 908 909 910 911 912 913 914 915 916 917 918
	/*
	 * Scan entries are valid for some time (15 sec). So we can save one
	 * active scan time if we just try cfg80211_get_bss first. If it fails
	 * then request scan and cfg80211_get_bss() again for final output.
	 */
	while (1) {
		if (is_scanning_required) {
			/* Do specific SSID scanning */
			if (mwifiex_request_scan(priv, &req_ssid)) {
				dev_err(priv->adapter->dev, "scan error\n");
				return -EFAULT;
			}
		}
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
		/* Find the BSS we want using available scan results */
		if (mode == NL80211_IFTYPE_ADHOC)
			bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
					       bssid, ssid, ssid_len,
					       WLAN_CAPABILITY_IBSS,
					       WLAN_CAPABILITY_IBSS);
		else
			bss = cfg80211_get_bss(priv->wdev->wiphy, channel,
					       bssid, ssid, ssid_len,
					       WLAN_CAPABILITY_ESS,
					       WLAN_CAPABILITY_ESS);

		if (!bss) {
			if (is_scanning_required) {
				dev_warn(priv->adapter->dev, "assoc: requested "
					 "bss not found in scan results\n");
				break;
			}
			is_scanning_required = 1;
		} else {
			dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
					(char *) req_ssid.ssid, bss->bssid);
			memcpy(&priv->cfg_bssid, bss->bssid, ETH_ALEN);
			break;
		}
945 946
	}

947
	if (mwifiex_bss_start(priv, bss, &req_ssid))
948 949
		return -EFAULT;

950
	if (mode == NL80211_IFTYPE_ADHOC) {
951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973
		/* Inform the BSS information to kernel, otherwise
		 * kernel will give a panic after successful assoc */
		if (mwifiex_cfg80211_inform_ibss_bss(priv))
			return -EFAULT;
	}

	return ret;
}

/*
 * CFG802.11 operation handler for association request.
 *
 * This function does not work when the current mode is set to Ad-Hoc, or
 * when there is already an association procedure going on. The given BSS
 * information is used to associate.
 */
static int
mwifiex_cfg80211_connect(struct wiphy *wiphy, struct net_device *dev,
			 struct cfg80211_connect_params *sme)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
	int ret = 0;

974
	if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
975 976 977 978 979 980 981 982 983
		wiphy_err(wiphy, "received infra assoc request "
				"when station is in ibss mode\n");
		goto done;
	}

	wiphy_dbg(wiphy, "info: Trying to associate to %s and bssid %pM\n",
	       (char *) sme->ssid, sme->bssid);

	ret = mwifiex_cfg80211_assoc(priv, sme->ssid_len, sme->ssid, sme->bssid,
984
				     priv->bss_mode, sme->channel, sme, 0);
985
done:
A
Amitkumar Karwar 已提交
986 987 988 989 990 991 992 993 994 995 996 997 998 999
	if (!ret) {
		cfg80211_connect_result(priv->netdev, priv->cfg_bssid, NULL, 0,
					NULL, 0, WLAN_STATUS_SUCCESS,
					GFP_KERNEL);
		dev_dbg(priv->adapter->dev,
			"info: associated to bssid %pM successfully\n",
			priv->cfg_bssid);
	} else {
		dev_dbg(priv->adapter->dev,
			"info: association to bssid %pM failed\n",
			priv->cfg_bssid);
		memset(priv->cfg_bssid, 0, ETH_ALEN);
	}

1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015
	return ret;
}

/*
 * CFG802.11 operation handler to join an IBSS.
 *
 * This function does not work in any mode other than Ad-Hoc, or if
 * a join operation is already in progress.
 */
static int
mwifiex_cfg80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
			   struct cfg80211_ibss_params *params)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
	int ret = 0;

1016
	if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1017 1018 1019 1020 1021 1022 1023 1024 1025
		wiphy_err(wiphy, "request to join ibss received "
				"when station is not in ibss mode\n");
		goto done;
	}

	wiphy_dbg(wiphy, "info: trying to join to %s and bssid %pM\n",
	       (char *) params->ssid, params->bssid);

	ret = mwifiex_cfg80211_assoc(priv, params->ssid_len, params->ssid,
1026 1027
				params->bssid, priv->bss_mode,
				params->channel, NULL, params->privacy);
1028
done:
A
Amitkumar Karwar 已提交
1029 1030 1031 1032 1033 1034 1035 1036 1037 1038
	if (!ret) {
		cfg80211_ibss_joined(priv->netdev, priv->cfg_bssid, GFP_KERNEL);
		dev_dbg(priv->adapter->dev,
			"info: joined/created adhoc network with bssid"
			" %pM successfully\n", priv->cfg_bssid);
	} else {
		dev_dbg(priv->adapter->dev,
			"info: failed creating/joining adhoc network\n");
	}

1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054
	return ret;
}

/*
 * CFG802.11 operation handler to leave an IBSS.
 *
 * This function does not work if a leave operation is
 * already in progress.
 */
static int
mwifiex_cfg80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);

	wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
			priv->cfg_bssid);
1055
	if (mwifiex_deauthenticate(priv, NULL))
1056 1057
		return -EFAULT;

A
Amitkumar Karwar 已提交
1058
	memset(priv->cfg_bssid, 0, ETH_ALEN);
1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074

	return 0;
}

/*
 * CFG802.11 operation handler for scan request.
 *
 * This function issues a scan request to the firmware based upon
 * the user specified scan configuration. On successfull completion,
 * it also informs the results.
 */
static int
mwifiex_cfg80211_scan(struct wiphy *wiphy, struct net_device *dev,
		      struct cfg80211_scan_request *request)
{
	struct mwifiex_private *priv = mwifiex_netdev_get_priv(dev);
A
Amitkumar Karwar 已提交
1075 1076
	int i;
	struct ieee80211_channel *chan;
1077 1078 1079 1080 1081

	wiphy_dbg(wiphy, "info: received scan request on %s\n", dev->name);

	priv->scan_request = request;

A
Amitkumar Karwar 已提交
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110
	priv->user_scan_cfg = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
					GFP_KERNEL);
	if (!priv->user_scan_cfg) {
		dev_err(priv->adapter->dev, "failed to alloc scan_req\n");
		return -ENOMEM;
	}
	for (i = 0; i < request->n_ssids; i++) {
		memcpy(priv->user_scan_cfg->ssid_list[i].ssid,
			request->ssids[i].ssid, request->ssids[i].ssid_len);
		priv->user_scan_cfg->ssid_list[i].max_len =
			request->ssids[i].ssid_len;
	}
	for (i = 0; i < request->n_channels; i++) {
		chan = request->channels[i];
		priv->user_scan_cfg->chan_list[i].chan_number = chan->hw_value;
		priv->user_scan_cfg->chan_list[i].radio_type = chan->band;

		if (chan->flags & IEEE80211_CHAN_PASSIVE_SCAN)
			priv->user_scan_cfg->chan_list[i].scan_type =
				MWIFIEX_SCAN_TYPE_PASSIVE;
		else
			priv->user_scan_cfg->chan_list[i].scan_type =
				MWIFIEX_SCAN_TYPE_ACTIVE;

		priv->user_scan_cfg->chan_list[i].scan_time = 0;
	}
	if (mwifiex_set_user_scan_ioctl(priv, priv->user_scan_cfg))
		return -EFAULT;

1111 1112 1113 1114 1115 1116 1117 1118 1119
	return 0;
}

/*
 * This function sets up the CFG802.11 specific HT capability fields
 * with default values.
 *
 * The following default values are set -
 *      - HT Supported = True
1120 1121 1122
 *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
 *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
 *      - HT Capabilities supported by firmware
1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135
 *      - MCS information, Rx mask = 0xff
 *      - MCD information, Tx parameters = IEEE80211_HT_MCS_TX_DEFINED (0x01)
 */
static void
mwifiex_setup_ht_caps(struct ieee80211_sta_ht_cap *ht_info,
		      struct mwifiex_private *priv)
{
	int rx_mcs_supp;
	struct ieee80211_mcs_info mcs_set;
	u8 *mcs = (u8 *)&mcs_set;
	struct mwifiex_adapter *adapter = priv->adapter;

	ht_info->ht_supported = true;
1136 1137
	ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
	ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1138 1139 1140

	memset(&ht_info->mcs, 0, sizeof(ht_info->mcs));

1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170
	/* Fill HT capability information */
	if (ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
		ht_info->cap |= IEEE80211_HT_CAP_SUP_WIDTH_20_40;
	else
		ht_info->cap &= ~IEEE80211_HT_CAP_SUP_WIDTH_20_40;

	if (ISSUPP_SHORTGI20(adapter->hw_dot_11n_dev_cap))
		ht_info->cap |= IEEE80211_HT_CAP_SGI_20;
	else
		ht_info->cap &= ~IEEE80211_HT_CAP_SGI_20;

	if (ISSUPP_SHORTGI40(adapter->hw_dot_11n_dev_cap))
		ht_info->cap |= IEEE80211_HT_CAP_SGI_40;
	else
		ht_info->cap &= ~IEEE80211_HT_CAP_SGI_40;

	if (ISSUPP_RXSTBC(adapter->hw_dot_11n_dev_cap))
		ht_info->cap |= 1 << IEEE80211_HT_CAP_RX_STBC_SHIFT;
	else
		ht_info->cap &= ~(3 << IEEE80211_HT_CAP_RX_STBC_SHIFT);

	if (ISSUPP_TXSTBC(adapter->hw_dot_11n_dev_cap))
		ht_info->cap |= IEEE80211_HT_CAP_TX_STBC;
	else
		ht_info->cap &= ~IEEE80211_HT_CAP_TX_STBC;

	ht_info->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
	ht_info->cap |= IEEE80211_HT_CAP_SM_PS;

	rx_mcs_supp = GET_RXMCSSUPP(adapter->hw_dev_mcs_support);
1171 1172 1173 1174 1175
	/* Set MCS for 1x1 */
	memset(mcs, 0xff, rx_mcs_supp);
	/* Clear all the other values */
	memset(&mcs[rx_mcs_supp], 0,
			sizeof(struct ieee80211_mcs_info) - rx_mcs_supp);
1176
	if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1177
			ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
1178 1179 1180 1181 1182 1183 1184 1185
		/* Set MCS32 for infra mode or ad-hoc mode with 40MHz support */
		SETHT_MCS32(mcs_set.rx_mask);

	memcpy((u8 *) &ht_info->mcs, mcs, sizeof(struct ieee80211_mcs_info));

	ht_info->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
}

1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321
/*
 *  create a new virtual interface with the given name
 */
struct net_device *mwifiex_add_virtual_intf(struct wiphy *wiphy,
						char *name,
						enum nl80211_iftype type,
						u32 *flags,
						struct vif_params *params)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
	struct mwifiex_adapter *adapter;
	struct net_device *dev;
	void *mdev_priv;

	if (!priv)
		return NULL;

	adapter = priv->adapter;
	if (!adapter)
		return NULL;

	switch (type) {
	case NL80211_IFTYPE_UNSPECIFIED:
	case NL80211_IFTYPE_STATION:
	case NL80211_IFTYPE_ADHOC:
		if (priv->bss_mode) {
			wiphy_err(wiphy, "cannot create multiple"
					" station/adhoc interfaces\n");
			return NULL;
		}

		if (type == NL80211_IFTYPE_UNSPECIFIED)
			priv->bss_mode = NL80211_IFTYPE_STATION;
		else
			priv->bss_mode = type;

		priv->bss_type = MWIFIEX_BSS_TYPE_STA;
		priv->frame_type = MWIFIEX_DATA_FRAME_TYPE_ETH_II;
		priv->bss_priority = 0;
		priv->bss_role = MWIFIEX_BSS_ROLE_STA;
		priv->bss_index = 0;
		priv->bss_num = 0;

		break;
	default:
		wiphy_err(wiphy, "type not supported\n");
		return NULL;
	}

	dev = alloc_netdev_mq(sizeof(struct mwifiex_private *), name,
			      ether_setup, 1);
	if (!dev) {
		wiphy_err(wiphy, "no memory available for netdevice\n");
		goto error;
	}

	dev_net_set(dev, wiphy_net(wiphy));
	dev->ieee80211_ptr = priv->wdev;
	dev->ieee80211_ptr->iftype = priv->bss_mode;
	memcpy(dev->dev_addr, wiphy->perm_addr, ETH_ALEN);
	memcpy(dev->perm_addr, wiphy->perm_addr, ETH_ALEN);
	SET_NETDEV_DEV(dev, wiphy_dev(wiphy));

	dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
	dev->watchdog_timeo = MWIFIEX_DEFAULT_WATCHDOG_TIMEOUT;
	dev->hard_header_len += MWIFIEX_MIN_DATA_HEADER_LEN;

	mdev_priv = netdev_priv(dev);
	*((unsigned long *) mdev_priv) = (unsigned long) priv;

	priv->netdev = dev;
	mwifiex_init_priv_params(priv, dev);

	SET_NETDEV_DEV(dev, adapter->dev);

	/* Register network device */
	if (register_netdevice(dev)) {
		wiphy_err(wiphy, "cannot register virtual network device\n");
		goto error;
	}

	sema_init(&priv->async_sem, 1);
	priv->scan_pending_on_block = false;

	dev_dbg(adapter->dev, "info: %s: Marvell 802.11 Adapter\n", dev->name);

#ifdef CONFIG_DEBUG_FS
	mwifiex_dev_debugfs_init(priv);
#endif
	return dev;
error:
	if (dev && (dev->reg_state == NETREG_UNREGISTERED))
		free_netdev(dev);
	priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;

	return NULL;
}
EXPORT_SYMBOL_GPL(mwifiex_add_virtual_intf);

/*
 * del_virtual_intf: remove the virtual interface determined by dev
 */
int mwifiex_del_virtual_intf(struct wiphy *wiphy, struct net_device *dev)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);

	if (!priv || !dev)
		return 0;

#ifdef CONFIG_DEBUG_FS
	mwifiex_dev_debugfs_remove(priv);
#endif

	if (!netif_queue_stopped(priv->netdev))
		netif_stop_queue(priv->netdev);

	if (netif_carrier_ok(priv->netdev))
		netif_carrier_off(priv->netdev);

	if (dev->reg_state == NETREG_REGISTERED)
		unregister_netdevice(dev);

	if (dev->reg_state == NETREG_UNREGISTERED)
		free_netdev(dev);

	/* Clear the priv in adapter */
	priv->netdev = NULL;

	priv->media_connected = false;

	priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED;

	return 0;
}
EXPORT_SYMBOL_GPL(mwifiex_del_virtual_intf);

1322 1323
/* station cfg80211 operations */
static struct cfg80211_ops mwifiex_cfg80211_ops = {
1324 1325
	.add_virtual_intf = mwifiex_add_virtual_intf,
	.del_virtual_intf = mwifiex_del_virtual_intf,
1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339
	.change_virtual_intf = mwifiex_cfg80211_change_virtual_intf,
	.scan = mwifiex_cfg80211_scan,
	.connect = mwifiex_cfg80211_connect,
	.disconnect = mwifiex_cfg80211_disconnect,
	.get_station = mwifiex_cfg80211_get_station,
	.set_wiphy_params = mwifiex_cfg80211_set_wiphy_params,
	.set_channel = mwifiex_cfg80211_set_channel,
	.join_ibss = mwifiex_cfg80211_join_ibss,
	.leave_ibss = mwifiex_cfg80211_leave_ibss,
	.add_key = mwifiex_cfg80211_add_key,
	.del_key = mwifiex_cfg80211_del_key,
	.set_default_key = mwifiex_cfg80211_set_default_key,
	.set_power_mgmt = mwifiex_cfg80211_set_power_mgmt,
	.set_tx_power = mwifiex_cfg80211_set_tx_power,
1340
	.set_bitrate_mask = mwifiex_cfg80211_set_bitrate_mask,
1341 1342 1343 1344 1345 1346 1347 1348 1349
};

/*
 * This function registers the device with CFG802.11 subsystem.
 *
 * The function creates the wireless device/wiphy, populates it with
 * default parameters and handler function pointers, and finally
 * registers the device.
 */
1350
int mwifiex_register_cfg80211(struct mwifiex_private *priv)
1351
{
1352 1353
	int ret;
	void *wdev_priv;
1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364
	struct wireless_dev *wdev;

	wdev = kzalloc(sizeof(struct wireless_dev), GFP_KERNEL);
	if (!wdev) {
		dev_err(priv->adapter->dev, "%s: allocating wireless device\n",
						__func__);
		return -ENOMEM;
	}
	wdev->wiphy =
		wiphy_new(&mwifiex_cfg80211_ops,
			  sizeof(struct mwifiex_private *));
1365 1366
	if (!wdev->wiphy) {
		kfree(wdev);
1367
		return -ENOMEM;
1368
	}
1369 1370 1371 1372
	wdev->iftype = NL80211_IFTYPE_STATION;
	wdev->wiphy->max_scan_ssids = 10;
	wdev->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1373

1374
	wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1375 1376 1377 1378 1379 1380 1381 1382 1383 1384
	mwifiex_setup_ht_caps(
		&wdev->wiphy->bands[IEEE80211_BAND_2GHZ]->ht_cap, priv);

	if (priv->adapter->config_bands & BAND_A) {
		wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = &mwifiex_band_5ghz;
		mwifiex_setup_ht_caps(
			&wdev->wiphy->bands[IEEE80211_BAND_5GHZ]->ht_cap, priv);
	} else {
		wdev->wiphy->bands[IEEE80211_BAND_5GHZ] = NULL;
	}
1385 1386 1387 1388 1389

	/* Initialize cipher suits */
	wdev->wiphy->cipher_suites = mwifiex_cipher_suites;
	wdev->wiphy->n_cipher_suites = ARRAY_SIZE(mwifiex_cipher_suites);

1390
	memcpy(wdev->wiphy->perm_addr, priv->curr_addr, ETH_ALEN);
1391 1392
	wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;

1393 1394 1395
	/* Reserve space for bss band information */
	wdev->wiphy->bss_priv_size = sizeof(u8);

1396 1397 1398 1399 1400 1401 1402
	wdev->wiphy->reg_notifier = mwifiex_reg_notifier;

	/* Set struct mwifiex_private pointer in wiphy_priv */
	wdev_priv = wiphy_priv(wdev->wiphy);

	*(unsigned long *) wdev_priv = (unsigned long) priv;

1403 1404
	set_wiphy_dev(wdev->wiphy, (struct device *) priv->adapter->dev);

1405 1406 1407 1408 1409
	ret = wiphy_register(wdev->wiphy);
	if (ret < 0) {
		dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
						__func__);
		wiphy_free(wdev->wiphy);
1410
		kfree(wdev);
1411 1412 1413 1414 1415 1416 1417 1418 1419 1420
		return ret;
	} else {
		dev_dbg(priv->adapter->dev,
				"info: successfully registered wiphy device\n");
	}

	priv->wdev = wdev;

	return ret;
}