cfg80211.c 39.4 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 -
 *      NL80211_CHAN_NO_HT     -> NO_SEC_CHANNEL
 *      NL80211_CHAN_HT20      -> NO_SEC_CHANNEL
 *      NL80211_CHAN_HT40PLUS  -> SEC_CHANNEL_ABOVE
 *      NL80211_CHAN_HT40MINUS -> SEC_CHANNEL_BELOW
 *      Others                 -> NO_SEC_CHANNEL
 */
static int
mwifiex_cfg80211_channel_type_to_mwifiex_channels(enum nl80211_channel_type
						  channel_type)
{
	switch (channel_type) {
	case NL80211_CHAN_NO_HT:
	case NL80211_CHAN_HT20:
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		return NO_SEC_CHANNEL;
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	case NL80211_CHAN_HT40PLUS:
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		return SEC_CHANNEL_ABOVE;
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	case NL80211_CHAN_HT40MINUS:
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		return SEC_CHANNEL_BELOW;
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	default:
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		return NO_SEC_CHANNEL;
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	}
}

/*
 * This function maps the driver channel type into nl802.11 channel type.
 *
 * The mapping is as follows -
 *      NO_SEC_CHANNEL      -> NL80211_CHAN_HT20
 *      SEC_CHANNEL_ABOVE   -> NL80211_CHAN_HT40PLUS
 *      SEC_CHANNEL_BELOW   -> NL80211_CHAN_HT40MINUS
 *      Others              -> NL80211_CHAN_HT20
 */
static enum nl80211_channel_type
mwifiex_channels_to_cfg80211_channel_type(int channel_type)
{
	switch (channel_type) {
	case NO_SEC_CHANNEL:
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		return NL80211_CHAN_HT20;
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	case SEC_CHANNEL_ABOVE:
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		return NL80211_CHAN_HT40PLUS;
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	case SEC_CHANNEL_BELOW:
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		return NL80211_CHAN_HT40MINUS;
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	default:
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		return NL80211_CHAN_HT20;
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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,
			      int dbm)
{
	struct mwifiex_private *priv = mwifiex_cfg80211_get_priv(wiphy);
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	struct mwifiex_power_cfg power_cfg;
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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;
	struct mwifiex_ds_band_cfg band_cfg;
	u32 config_bands = 0;
	struct wiphy *wiphy = priv->wdev->wiphy;

	if (chan) {
		memset(&band_cfg, 0, sizeof(band_cfg));
		/* Set appropriate bands */
		if (chan->band == IEEE80211_BAND_2GHZ)
			config_bands = BAND_B | BAND_G | BAND_GN;
		else
			config_bands = BAND_AN | BAND_A;
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		if (priv->bss_mode == NL80211_IFTYPE_STATION
		    || priv->bss_mode == NL80211_IFTYPE_UNSPECIFIED) {
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			band_cfg.config_bands = config_bands;
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		} else if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
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			band_cfg.config_bands = config_bands;
			band_cfg.adhoc_start_band = config_bands;
		}
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		band_cfg.sec_chan_offset =
			mwifiex_cfg80211_channel_type_to_mwifiex_channels
			(channel_type);

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		if (mwifiex_set_radio_band_cfg(priv, &band_cfg))
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			return -EFAULT;
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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, band_cfg.sec_chan_offset,
		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;
	}

	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;
	sinfo->signal = priv->w_stats.qual.level;
	sinfo->txrate.legacy = rate.rate;

	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);

	mwifiex_dump_station_info(priv, sinfo);

	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,
};

/*
 * 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);

	if (priv->disconnect)
		return -EBUSY;

	priv->disconnect = 1;
690
	if (mwifiex_deauthenticate(priv, NULL))
691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715
		return -EFAULT;

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

	queue_work(priv->workqueue, &priv->cfg_workqueue);

	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;
716
	int ie_len;
717 718
	u8 ie_buf[IEEE80211_MAX_SSID_LEN + sizeof(struct ieee_types_header)];

719 720
	if (mwifiex_get_bss_info(priv, &bss_info))
		return -1;
721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738

	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);

	chan = __ieee80211_get_channel(priv->wdev->wiphy,
			ieee80211_channel_to_frequency(bss_info.bss_chan,
						priv->curr_bss_params.band));

	cfg80211_inform_bss(priv->wdev->wiphy, chan,
		bss_info.bssid, 0, WLAN_CAPABILITY_IBSS,
		0, ie_buf, ie_len, 0, GFP_KERNEL);
	memcpy(priv->cfg_bssid, bss_info.bssid, ETH_ALEN);

739
	return 0;
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
}

/*
 * This function informs the CFG802.11 subsystem of a new BSS connection.
 *
 * The following information are sent to the CFG802.11 subsystem
 * to register the new BSS connection. If we do not register the new BSS,
 * a kernel panic will result.
 *      - MAC address
 *      - Capabilities
 *      - Beacon period
 *      - RSSI value
 *      - Channel
 *      - Supported rates IE
 *      - Extended capabilities IE
 *      - DS parameter set IE
 *      - HT Capability IE
 *      - Vendor Specific IE (221)
 *      - WPA IE
 *      - RSN IE
 */
static int mwifiex_inform_bss_from_scan_result(struct mwifiex_private *priv,
					       struct mwifiex_802_11_ssid *ssid)
{
	struct mwifiex_bssdescriptor *scan_table;
	int i, j;
	struct ieee80211_channel *chan;
767
	u8 *ie, *ie_buf;
768 769 770 771 772 773 774 775 776 777 778 779 780
	u32 ie_len;
	u8 *beacon;
	int beacon_size;
	u8 element_id, element_len;

#define MAX_IE_BUF	2048
	ie_buf = kzalloc(MAX_IE_BUF, GFP_KERNEL);
	if (!ie_buf) {
		dev_err(priv->adapter->dev, "%s: failed to alloc ie_buf\n",
						__func__);
		return -ENOMEM;
	}

B
Bing Zhao 已提交
781 782
	scan_table = priv->adapter->scan_table;
	for (i = 0; i < priv->adapter->num_in_scan_table; i++) {
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
		if (ssid) {
			/* Inform specific BSS only */
			if (memcmp(ssid->ssid, scan_table[i].ssid.ssid,
					   ssid->ssid_len))
				continue;
		}
		memset(ie_buf, 0, MAX_IE_BUF);
		ie_buf[0] = WLAN_EID_SSID;
		ie_buf[1] = scan_table[i].ssid.ssid_len;
		memcpy(&ie_buf[sizeof(struct ieee_types_header)],
		       scan_table[i].ssid.ssid, ie_buf[1]);

		ie = ie_buf + ie_buf[1] + sizeof(struct ieee_types_header);
		ie_len = ie_buf[1] + sizeof(struct ieee_types_header);

		ie[0] = WLAN_EID_SUPP_RATES;

		for (j = 0; j < sizeof(scan_table[i].supported_rates); j++) {
			if (!scan_table[i].supported_rates[j])
				break;
			else
				ie[j + sizeof(struct ieee_types_header)] =
					scan_table[i].supported_rates[j];
		}

		ie[1] = j;
		ie_len += ie[1] + sizeof(struct ieee_types_header);

		beacon = scan_table[i].beacon_buf;
		beacon_size = scan_table[i].beacon_buf_size;

		/* Skip time stamp, beacon interval and capability */

		if (beacon) {
			beacon += sizeof(scan_table[i].beacon_period)
				+ sizeof(scan_table[i].time_stamp) +
				+sizeof(scan_table[i].cap_info_bitmap);

			beacon_size -= sizeof(scan_table[i].beacon_period)
				+ sizeof(scan_table[i].time_stamp)
				+ sizeof(scan_table[i].cap_info_bitmap);
		}

		while (beacon_size >= sizeof(struct ieee_types_header)) {
			ie = ie_buf + ie_len;
			element_id = *beacon;
			element_len = *(beacon + 1);
			if (beacon_size < (int) element_len +
			    sizeof(struct ieee_types_header)) {
				dev_err(priv->adapter->dev, "%s: in processing"
					" IE, bytes left < IE length\n",
					__func__);
				break;
			}
			switch (element_id) {
			case WLAN_EID_EXT_CAPABILITY:
			case WLAN_EID_DS_PARAMS:
			case WLAN_EID_HT_CAPABILITY:
			case WLAN_EID_VENDOR_SPECIFIC:
			case WLAN_EID_RSN:
			case WLAN_EID_BSS_AC_ACCESS_DELAY:
				ie[0] = element_id;
				ie[1] = element_len;
				memcpy(&ie[sizeof(struct ieee_types_header)],
847 848
				       (u8 *) beacon
				       + sizeof(struct ieee_types_header),
849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864
				       element_len);
				ie_len += ie[1] +
					sizeof(struct ieee_types_header);
				break;
			default:
				break;
			}
			beacon += element_len +
					sizeof(struct ieee_types_header);
			beacon_size -= element_len +
					sizeof(struct ieee_types_header);
		}
		chan = ieee80211_get_channel(priv->wdev->wiphy,
						scan_table[i].freq);
		cfg80211_inform_bss(priv->wdev->wiphy, chan,
					scan_table[i].mac_address,
865
					0, scan_table[i].cap_info_bitmap,
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
					scan_table[i].beacon_period,
					ie_buf, ie_len,
					scan_table[i].rssi, GFP_KERNEL);
	}

	kfree(ie_buf);
	return 0;
}

/*
 * 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,
 * the function notifies the CFG802.11 subsystem of the new BSS connection,
 * otherwise the kernel will panic.
 */
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;
	struct mwifiex_ssid_bssid ssid_bssid;
897
	int ret, auth_type = 0;
898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914

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

	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 */
915
	mwifiex_deauthenticate(priv, NULL);
916 917 918 919 920 921 922 923

	if (channel)
		ret = mwifiex_set_rf_channel(priv, channel,
				mwifiex_channels_to_cfg80211_channel_type
				(priv->adapter->chan_offset));

	ret = mwifiex_set_encode(priv, NULL, 0, 0, 1);	/* Disable keys */

924
	if (mode == NL80211_IFTYPE_ADHOC) {
925 926 927
		/* "privacy" is set only for ad-hoc mode */
		if (privacy) {
			/*
928
			 * Keep WLAN_CIPHER_SUITE_WEP104 for now so that
929 930 931 932
			 * 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.
			 */
933
			priv->sec_info.encryption_mode =
934
					WLAN_CIPHER_SUITE_WEP104;
935
			priv->sec_info.authentication_mode =
936
					NL80211_AUTHTYPE_OPEN_SYSTEM;
937 938 939 940 941 942 943 944
		}

		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)
945
		auth_type = NL80211_AUTHTYPE_OPEN_SYSTEM;
946
	else if (sme->auth_type == NL80211_AUTHTYPE_SHARED_KEY)
947
		auth_type = NL80211_AUTHTYPE_SHARED_KEY;
948 949

	if (sme->crypto.n_ciphers_pairwise) {
950 951
		priv->sec_info.encryption_mode =
						sme->crypto.ciphers_pairwise[0];
952
		priv->sec_info.authentication_mode = auth_type;
953 954 955
	}

	if (sme->crypto.cipher_group) {
956
		priv->sec_info.encryption_mode = sme->crypto.cipher_group;
957
		priv->sec_info.authentication_mode = auth_type;
958 959 960 961 962
	}
	if (sme->ie)
		ret = mwifiex_set_gen_ie(priv, sme->ie, sme->ie_len);

	if (sme->key) {
963
		if (mwifiex_is_alg_wep(0) | mwifiex_is_alg_wep(0)) {
964 965 966 967 968 969 970 971 972
			dev_dbg(priv->adapter->dev,
				"info: setting wep encryption"
				" with key len %d\n", sme->key_len);
			ret = mwifiex_set_encode(priv, sme->key, sme->key_len,
							sme->key_idx, 0);
		}
	}
done:
	/* Do specific SSID scanning */
973
	if (mwifiex_request_scan(priv, &req_ssid)) {
974 975 976 977 978 979 980
		dev_err(priv->adapter->dev, "scan error\n");
		return -EFAULT;
	}


	memcpy(&ssid_bssid.ssid, &req_ssid, sizeof(struct mwifiex_802_11_ssid));

981
	if (mode != NL80211_IFTYPE_ADHOC) {
982
		if (mwifiex_find_best_bss(priv, &ssid_bssid))
983 984 985 986 987 988 989 990 991 992 993 994 995 996 997
			return -EFAULT;
		/* Inform the BSS information to kernel, otherwise
		 * kernel will give a panic after successful assoc */
		if (mwifiex_inform_bss_from_scan_result(priv, &req_ssid))
			return -EFAULT;
	}

	dev_dbg(priv->adapter->dev, "info: trying to associate to %s and bssid %pM\n",
	       (char *) req_ssid.ssid, ssid_bssid.bssid);

	memcpy(&priv->cfg_bssid, ssid_bssid.bssid, 6);

	/* Connect to BSS by ESSID */
	memset(&ssid_bssid.bssid, 0, ETH_ALEN);

998 999 1000 1001
	if (!netif_queue_stopped(priv->netdev))
		netif_stop_queue(priv->netdev);

	if (mwifiex_bss_start(priv, &ssid_bssid))
1002 1003
		return -EFAULT;

1004
	if (mode == NL80211_IFTYPE_ADHOC) {
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030
		/* 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;

	if (priv->assoc_request)
		return -EBUSY;

1031
	if (priv->bss_mode == NL80211_IFTYPE_ADHOC) {
1032 1033 1034 1035 1036
		wiphy_err(wiphy, "received infra assoc request "
				"when station is in ibss mode\n");
		goto done;
	}

1037
	priv->assoc_request = -EINPROGRESS;
1038 1039 1040 1041 1042

	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,
1043
				     priv->bss_mode, sme->channel, sme, 0);
1044

1045
	priv->assoc_request = 1;
1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067
done:
	priv->assoc_result = ret;
	queue_work(priv->workqueue, &priv->cfg_workqueue);
	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;

	if (priv->ibss_join_request)
		return -EBUSY;

1068
	if (priv->bss_mode != NL80211_IFTYPE_ADHOC) {
1069 1070 1071 1072 1073
		wiphy_err(wiphy, "request to join ibss received "
				"when station is not in ibss mode\n");
		goto done;
	}

1074
	priv->ibss_join_request = -EINPROGRESS;
1075 1076 1077 1078 1079

	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,
1080 1081
				params->bssid, priv->bss_mode,
				params->channel, NULL, params->privacy);
1082 1083

	priv->ibss_join_request = 1;
1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107
done:
	priv->ibss_join_result = ret;
	queue_work(priv->workqueue, &priv->cfg_workqueue);
	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);

	if (priv->disconnect)
		return -EBUSY;

	priv->disconnect = 1;

	wiphy_dbg(wiphy, "info: disconnecting from essid %pM\n",
			priv->cfg_bssid);
1108
	if (mwifiex_deauthenticate(priv, NULL))
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145
		return -EFAULT;

	queue_work(priv->workqueue, &priv->cfg_workqueue);

	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);

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

	if (priv->scan_request && priv->scan_request != request)
		return -EBUSY;

	priv->scan_request = request;

	queue_work(priv->workqueue, &priv->cfg_workqueue);
	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
1146 1147 1148
 *      - Maximum AMPDU length factor = IEEE80211_HT_MAX_AMPDU_64K
 *      - Minimum AMPDU spacing = IEEE80211_HT_MPDU_DENSITY_NONE
 *      - HT Capabilities supported by firmware
1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161
 *      - 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;
1162 1163
	ht_info->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
	ht_info->ampdu_density = IEEE80211_HT_MPDU_DENSITY_NONE;
1164 1165 1166

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

1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196
	/* 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);
1197 1198 1199 1200 1201
	/* 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);
1202
	if (priv->bss_mode == NL80211_IFTYPE_STATION ||
1203
			ISSUPP_CHANWIDTH40(adapter->hw_dot_11n_dev_cap))
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
		/* 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;
}

/* station cfg80211 operations */
static struct cfg80211_ops mwifiex_cfg80211_ops = {
	.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,
};

/*
 * 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.
 */
int mwifiex_register_cfg80211(struct net_device *dev, u8 *mac,
			      struct mwifiex_private *priv)
{
1240 1241
	int ret;
	void *wdev_priv;
1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252
	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 *));
1253 1254
	if (!wdev->wiphy) {
		kfree(wdev);
1255
		return -ENOMEM;
1256
	}
1257 1258 1259 1260
	wdev->iftype = NL80211_IFTYPE_STATION;
	wdev->wiphy->max_scan_ssids = 10;
	wdev->wiphy->interface_modes =
		BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
1261

1262
	wdev->wiphy->bands[IEEE80211_BAND_2GHZ] = &mwifiex_band_2ghz;
1263 1264 1265 1266 1267 1268 1269 1270 1271 1272
	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;
	}
1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295

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

	memcpy(wdev->wiphy->perm_addr, mac, 6);
	wdev->wiphy->signal_type = CFG80211_SIGNAL_TYPE_MBM;

	/* We are using custom domains */
	wdev->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY;

	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;

	ret = wiphy_register(wdev->wiphy);
	if (ret < 0) {
		dev_err(priv->adapter->dev, "%s: registering cfg80211 device\n",
						__func__);
		wiphy_free(wdev->wiphy);
1296
		kfree(wdev);
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 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378
		return ret;
	} else {
		dev_dbg(priv->adapter->dev,
				"info: successfully registered wiphy device\n");
	}

	dev_net_set(dev, wiphy_net(wdev->wiphy));
	dev->ieee80211_ptr = wdev;
	memcpy(dev->dev_addr, wdev->wiphy->perm_addr, 6);
	memcpy(dev->perm_addr, wdev->wiphy->perm_addr, 6);
	SET_NETDEV_DEV(dev, wiphy_dev(wdev->wiphy));
	priv->wdev = wdev;

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

	return ret;
}

/*
 * This function handles the result of different pending network operations.
 *
 * The following operations are handled and CFG802.11 subsystem is
 * notified accordingly -
 *      - Scan request completion
 *      - Association request completion
 *      - IBSS join request completion
 *      - Disconnect request completion
 */
void
mwifiex_cfg80211_results(struct work_struct *work)
{
	struct mwifiex_private *priv =
		container_of(work, struct mwifiex_private, cfg_workqueue);
	struct mwifiex_user_scan_cfg *scan_req;
	int ret = 0, i;
	struct ieee80211_channel *chan;

	if (priv->scan_request) {
		scan_req = kzalloc(sizeof(struct mwifiex_user_scan_cfg),
				   GFP_KERNEL);
		if (!scan_req) {
			dev_err(priv->adapter->dev, "failed to alloc "
						    "scan_req\n");
			return;
		}
		for (i = 0; i < priv->scan_request->n_ssids; i++) {
			memcpy(scan_req->ssid_list[i].ssid,
					priv->scan_request->ssids[i].ssid,
					priv->scan_request->ssids[i].ssid_len);
			scan_req->ssid_list[i].max_len =
					priv->scan_request->ssids[i].ssid_len;
		}
		for (i = 0; i < priv->scan_request->n_channels; i++) {
			chan = priv->scan_request->channels[i];
			scan_req->chan_list[i].chan_number = chan->hw_value;
			scan_req->chan_list[i].radio_type = chan->band;
			if (chan->flags & IEEE80211_CHAN_DISABLED)
				scan_req->chan_list[i].scan_type =
					MWIFIEX_SCAN_TYPE_PASSIVE;
			else
				scan_req->chan_list[i].scan_type =
					MWIFIEX_SCAN_TYPE_ACTIVE;
			scan_req->chan_list[i].scan_time = 0;
		}
		if (mwifiex_set_user_scan_ioctl(priv, scan_req)) {
			ret = -EFAULT;
			goto done;
		}
		if (mwifiex_inform_bss_from_scan_result(priv, NULL))
			ret = -EFAULT;
done:
		priv->scan_result_status = ret;
		dev_dbg(priv->adapter->dev, "info: %s: sending scan results\n",
							__func__);
		cfg80211_scan_done(priv->scan_request,
				(priv->scan_result_status < 0));
		priv->scan_request = NULL;
		kfree(scan_req);
	}

1379
	if (priv->assoc_request == 1) {
1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397
		if (!priv->assoc_result) {
			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);
		}
		priv->assoc_request = 0;
		priv->assoc_result = 0;
	}

1398
	if (priv->ibss_join_request == 1) {
1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417
		if (!priv->ibss_join_result) {
			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");
		}
		priv->ibss_join_request = 0;
		priv->ibss_join_result = 0;
	}

	if (priv->disconnect) {
		memset(priv->cfg_bssid, 0, ETH_ALEN);
		priv->disconnect = 0;
	}
}