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Commit 10ceaac9 authored by Naveen Singh's avatar Naveen Singh Committed by Greg Kroah-Hartman
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ath6kl: iw dev wlan0 link implementation 



implementing the cfg ops that gets called when iw dev wlan0
link is issued by user. The ops that needs to be implemented
is get_station.

kvalo: check the mac address, remove signal_pending(), use ARRAY_SIZE()
and fix style issues

Signed-off-by: default avatarNaveen Singh <nsingh@atheros.com>
Signed-off-by: default avatarKalle Valo <kalle.valo@atheros.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent d93089df

drivers/staging/ath6kl/os/linux/cfg80211.c

+146 −0
Original line number Diff line number Diff line
@@ -1461,6 +1461,151 @@ u32 cipher_suites[] = { 
    WLAN_CIPHER_SUITE_CCMP,

};



bool is_rate_legacy(s32 rate)

{

	static const s32 legacy[] = { 1000, 2000, 5500, 11000,

				      6000, 9000, 12000, 18000, 24000,

				      36000, 48000, 54000 };

	u8 i;



	for (i = 0; i < ARRAY_SIZE(legacy); i++) {

		if (rate == legacy[i])

			return true;

	}



	return false;

}



bool is_rate_ht20(s32 rate, u8 *mcs, bool *sgi)

{

	static const s32 ht20[] = { 6500, 13000, 19500, 26000, 39000,

				    52000, 58500, 65000, 72200 };

	u8 i;



	for (i = 0; i < ARRAY_SIZE(ht20); i++) {

		if (rate == ht20[i]) {

			if (i == ARRAY_SIZE(ht20) - 1)

				/* last rate uses sgi */

				*sgi = true;

			else

				*sgi = false;



			*mcs = i;

			return true;

		}

	}

	return false;

}



bool is_rate_ht40(s32 rate, u8 *mcs, bool *sgi)

{

	static const s32 ht40[] = { 13500, 27000, 40500, 54000,

				    81000, 108000, 121500, 135000,

				    150000 };

	u8 i;



	for (i = 0; i < ARRAY_SIZE(ht40); i++) {

		if (rate == ht40[i]) {

			if (i == ARRAY_SIZE(ht40) - 1)

				/* last rate uses sgi */

				*sgi = true;

			else

				*sgi = false;



			*mcs = i;

			return true;

		}

	}



	return false;

}



static int ar6k_get_station(struct wiphy *wiphy, struct net_device *dev,

			    u8 *mac, struct station_info *sinfo)

{

	struct ar6_softc *ar = ar6k_priv(dev);

	long left;

	bool sgi;

	s32 rate;

	int ret;

	u8 mcs;



	if (memcmp(mac, ar->arBssid, ETH_ALEN) != 0)

		return -ENOENT;



	if (down_interruptible(&ar->arSem))

		return -EBUSY;



	ar->statsUpdatePending = true;



	ret = wmi_get_stats_cmd(ar->arWmi);



	if (ret != 0) {

		up(&ar->arSem);

		return -EIO;

	}



	left = wait_event_interruptible_timeout(arEvent,

						ar->statsUpdatePending == false,

						wmitimeout * HZ);



	up(&ar->arSem);



	if (left == 0)

		return -ETIMEDOUT;

	else if (left < 0)

		return left;



	if (ar->arTargetStats.rx_bytes) {

		sinfo->rx_bytes = ar->arTargetStats.rx_bytes;

		sinfo->filled |= STATION_INFO_RX_BYTES;

		sinfo->rx_packets = ar->arTargetStats.rx_packets;

		sinfo->filled |= STATION_INFO_RX_PACKETS;

	}



	if (ar->arTargetStats.tx_bytes) {

		sinfo->tx_bytes = ar->arTargetStats.tx_bytes;

		sinfo->filled |= STATION_INFO_TX_BYTES;

		sinfo->tx_packets = ar->arTargetStats.tx_packets;

		sinfo->filled |= STATION_INFO_TX_PACKETS;

	}



	sinfo->signal = ar->arTargetStats.cs_rssi;

	sinfo->filled |= STATION_INFO_SIGNAL;



	rate = ar->arTargetStats.tx_unicast_rate;



	if (is_rate_legacy(rate)) {

		sinfo->txrate.legacy = rate / 100;

	} else if (is_rate_ht20(rate, &mcs, &sgi)) {

		if (sgi) {

			sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;

			sinfo->txrate.mcs = mcs - 1;

		} else {

			sinfo->txrate.mcs = mcs;

		}



		sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;

	} else if (is_rate_ht40(rate, &mcs, &sgi)) {

		if (sgi) {

			sinfo->txrate.flags |= RATE_INFO_FLAGS_SHORT_GI;

			sinfo->txrate.mcs = mcs - 1;

		} else {

			sinfo->txrate.mcs = mcs;

		}



		sinfo->txrate.flags |= RATE_INFO_FLAGS_40_MHZ_WIDTH;

		sinfo->txrate.flags |= RATE_INFO_FLAGS_MCS;

	} else {

		WARN(1, "invalid rate: %d", rate);

		return 0;

	}



	sinfo->filled |= STATION_INFO_TX_BITRATE;



	return 0;

}



static struct

cfg80211_ops ar6k_cfg80211_ops = {

    .change_virtual_intf = ar6k_cfg80211_change_iface,
@@ -1481,6 +1626,7 @@ cfg80211_ops ar6k_cfg80211_ops = { 
    .set_power_mgmt = ar6k_cfg80211_set_power_mgmt,

    .join_ibss = ar6k_cfg80211_join_ibss,

    .leave_ibss = ar6k_cfg80211_leave_ibss,

    .get_station = ar6k_get_station,

};



struct wireless_dev *