1 files changed, 115 insertions, 90 deletions

diff --git a/drivers/net/wireless/rndis_wlan.c b/drivers/net/wireless/rndis_wlan.c
index 18c9931..00e965b 100644
--- a/drivers/net/wireless/rndis_wlan.c
+++ b/drivers/net/wireless/rndis_wlan.c
@@ -310,8 +310,11 @@ enum wpa_key_mgmt { KEY_MGMT_802_1X, KEY_MGMT_PSK, KEY_MGMT_NONE,
 #define CAP_MODE_MASK		7
 #define CAP_SUPPORT_TXPOWER	8
 
-#define WORK_CONNECTION_EVENT	(1<<0)
-#define WORK_SET_MULTICAST_LIST	(1<<1)
+#define WORK_LINK_UP		(1<<0)
+#define WORK_LINK_DOWN		(1<<1)
+#define WORK_SET_MULTICAST_LIST	(1<<2)
+
+#define COMMAND_BUFFER_SIZE	(CONTROL_BUFFER_SIZE + sizeof(struct rndis_set))
 
 /* RNDIS device private data */
 struct rndis_wext_private {
@@ -361,6 +364,8 @@ struct rndis_wext_private {
 	u8  *wpa_ie;
 	int  wpa_cipher_pair;
 	int  wpa_cipher_group;
+
+	u8 command_buffer[COMMAND_BUFFER_SIZE];
 };
 
 
@@ -427,18 +432,23 @@ static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
 	buflen = *len + sizeof(*u.get);
 	if (buflen < CONTROL_BUFFER_SIZE)
 		buflen = CONTROL_BUFFER_SIZE;
-	u.buf = kmalloc(buflen, GFP_KERNEL);
-	if (!u.buf)
-		return -ENOMEM;
+
+	if (buflen > COMMAND_BUFFER_SIZE) {
+		u.buf = kmalloc(buflen, GFP_KERNEL);
+		if (!u.buf)
+			return -ENOMEM;
+	} else {
+		u.buf = priv->command_buffer;
+	}
+
+	mutex_lock(&priv->command_lock);
+
 	memset(u.get, 0, sizeof *u.get);
 	u.get->msg_type = RNDIS_MSG_QUERY;
 	u.get->msg_len = ccpu2(sizeof *u.get);
 	u.get->oid = oid;
 
-	mutex_lock(&priv->command_lock);
-	ret = rndis_command(dev, u.header);
-	mutex_unlock(&priv->command_lock);
-
+	ret = rndis_command(dev, u.header, buflen);
 	if (ret == 0) {
 		ret = le32_to_cpu(u.get_c->len);
 		*len = (*len > ret) ? ret : *len;
@@ -446,7 +456,10 @@ static int rndis_query_oid(struct usbnet *dev, __le32 oid, void *data, int *len)
 		ret = rndis_error_status(u.get_c->status);
 	}
 
-	kfree(u.buf);
+	mutex_unlock(&priv->command_lock);
+
+	if (u.buf != priv->command_buffer)
+		kfree(u.buf);
 	return ret;
 }
 
@@ -465,9 +478,16 @@ static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len)
 	buflen = len + sizeof(*u.set);
 	if (buflen < CONTROL_BUFFER_SIZE)
 		buflen = CONTROL_BUFFER_SIZE;
-	u.buf = kmalloc(buflen, GFP_KERNEL);
-	if (!u.buf)
-		return -ENOMEM;
+
+	if (buflen > COMMAND_BUFFER_SIZE) {
+		u.buf = kmalloc(buflen, GFP_KERNEL);
+		if (!u.buf)
+			return -ENOMEM;
+	} else {
+		u.buf = priv->command_buffer;
+	}
+
+	mutex_lock(&priv->command_lock);
 
 	memset(u.set, 0, sizeof *u.set);
 	u.set->msg_type = RNDIS_MSG_SET;
@@ -478,14 +498,14 @@ static int rndis_set_oid(struct usbnet *dev, __le32 oid, void *data, int len)
 	u.set->handle = ccpu2(0);
 	memcpy(u.buf + sizeof(*u.set), data, len);
 
-	mutex_lock(&priv->command_lock);
-	ret = rndis_command(dev, u.header);
-	mutex_unlock(&priv->command_lock);
-
+	ret = rndis_command(dev, u.header, buflen);
 	if (ret == 0)
 		ret = rndis_error_status(u.set_c->status);
 
-	kfree(u.buf);
+	mutex_unlock(&priv->command_lock);
+
+	if (u.buf != priv->command_buffer)
+		kfree(u.buf);
 	return ret;
 }
 
@@ -620,8 +640,7 @@ static void dsconfig_to_freq(unsigned int dsconfig, struct iw_freq *freq)
 static int freq_to_dsconfig(struct iw_freq *freq, unsigned int *dsconfig)
 {
 	if (freq->m < 1000 && freq->e == 0) {
-		if (freq->m >= 1 &&
-			freq->m <= (sizeof(freq_chan) / sizeof(freq_chan[0])))
+		if (freq->m >= 1 && freq->m <= ARRAY_SIZE(freq_chan))
 			*dsconfig = freq_chan[freq->m - 1] * 1000;
 		else
 			return -1;
@@ -1135,7 +1154,7 @@ static int rndis_iw_get_range(struct net_device *dev,
 	/* fill in 802.11g rates */
 	if (has_80211g_rates) {
 		num = range->num_bitrates;
-		for (i = 0; i < sizeof(rates_80211g); i++) {
+		for (i = 0; i < ARRAY_SIZE(rates_80211g); i++) {
 			for (j = 0; j < num; j++) {
 				if (range->bitrate[j] ==
 					rates_80211g[i] * 1000000)
@@ -1159,10 +1178,9 @@ static int rndis_iw_get_range(struct net_device *dev,
 		range->throughput = 11 * 1000 * 1000 / 2;
 	}
 
-	range->num_channels = (sizeof(freq_chan)/sizeof(freq_chan[0]));
+	range->num_channels = ARRAY_SIZE(freq_chan);
 
-	for (i = 0; i < (sizeof(freq_chan)/sizeof(freq_chan[0])) &&
-			i < IW_MAX_FREQUENCIES; i++) {
+	for (i = 0; i < ARRAY_SIZE(freq_chan) && i < IW_MAX_FREQUENCIES; i++) {
 		range->freq[i].i = i + 1;
 		range->freq[i].m = freq_chan[i] * 100000;
 		range->freq[i].e = 1;
@@ -1630,7 +1648,9 @@ static int rndis_iw_set_scan(struct net_device *dev,
 
 
 static char *rndis_translate_scan(struct net_device *dev,
-    char *cev, char *end_buf, struct ndis_80211_bssid_ex *bssid)
+				  struct iw_request_info *info, char *cev,
+				  char *end_buf,
+				  struct ndis_80211_bssid_ex *bssid)
 {
 #ifdef DEBUG
 	struct usbnet *usbdev = dev->priv;
@@ -1649,14 +1669,14 @@ static char *rndis_translate_scan(struct net_device *dev,
 	iwe.cmd = SIOCGIWAP;
 	iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 	memcpy(iwe.u.ap_addr.sa_data, bssid->mac, ETH_ALEN);
-	cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_ADDR_LEN);
+	cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_ADDR_LEN);
 
 	devdbg(usbdev, "SSID(%d) %s", le32_to_cpu(bssid->ssid.length),
 						bssid->ssid.essid);
 	iwe.cmd = SIOCGIWESSID;
 	iwe.u.essid.length = le32_to_cpu(bssid->ssid.length);
 	iwe.u.essid.flags = 1;
-	cev = iwe_stream_add_point(cev, end_buf, &iwe, bssid->ssid.essid);
+	cev = iwe_stream_add_point(info, cev, end_buf, &iwe, bssid->ssid.essid);
 
 	devdbg(usbdev, "MODE %d", le32_to_cpu(bssid->net_infra));
 	iwe.cmd = SIOCGIWMODE;
@@ -1672,12 +1692,12 @@ static char *rndis_translate_scan(struct net_device *dev,
 		iwe.u.mode = IW_MODE_AUTO;
 		break;
 	}
-	cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_UINT_LEN);
+	cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_UINT_LEN);
 
 	devdbg(usbdev, "FREQ %d kHz", le32_to_cpu(bssid->config.ds_config));
 	iwe.cmd = SIOCGIWFREQ;
 	dsconfig_to_freq(le32_to_cpu(bssid->config.ds_config), &iwe.u.freq);
-	cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_FREQ_LEN);
+	cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_FREQ_LEN);
 
 	devdbg(usbdev, "QUAL %d", le32_to_cpu(bssid->rssi));
 	iwe.cmd = IWEVQUAL;
@@ -1686,7 +1706,7 @@ static char *rndis_translate_scan(struct net_device *dev,
 	iwe.u.qual.updated = IW_QUAL_QUAL_UPDATED
 			| IW_QUAL_LEVEL_UPDATED
 			| IW_QUAL_NOISE_INVALID;
-	cev = iwe_stream_add_event(cev, end_buf, &iwe, IW_EV_QUAL_LEN);
+	cev = iwe_stream_add_event(info, cev, end_buf, &iwe, IW_EV_QUAL_LEN);
 
 	devdbg(usbdev, "ENCODE %d", le32_to_cpu(bssid->privacy));
 	iwe.cmd = SIOCGIWENCODE;
@@ -1696,10 +1716,10 @@ static char *rndis_translate_scan(struct net_device *dev,
 	else
 		iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 
-	cev = iwe_stream_add_point(cev, end_buf, &iwe, NULL);
+	cev = iwe_stream_add_point(info, cev, end_buf, &iwe, NULL);
 
 	devdbg(usbdev, "RATES:");
-	current_val = cev + IW_EV_LCP_LEN;
+	current_val = cev + iwe_stream_lcp_len(info);
 	iwe.cmd = SIOCGIWRATE;
 	for (i = 0; i < sizeof(bssid->rates); i++) {
 		if (bssid->rates[i] & 0x7f) {
@@ -1707,13 +1727,13 @@ static char *rndis_translate_scan(struct net_device *dev,
 				((bssid->rates[i] & 0x7f) *
 				500000);
 			devdbg(usbdev, " %d", iwe.u.bitrate.value);
-			current_val = iwe_stream_add_value(cev,
+			current_val = iwe_stream_add_value(info, cev,
 				current_val, end_buf, &iwe,
 				IW_EV_PARAM_LEN);
 		}
 	}
 
-	if ((current_val - cev) > IW_EV_LCP_LEN)
+	if ((current_val - cev) > iwe_stream_lcp_len(info))
 		cev = current_val;
 
 	beacon = le32_to_cpu(bssid->config.beacon_period);
@@ -1721,14 +1741,14 @@ static char *rndis_translate_scan(struct net_device *dev,
 	iwe.cmd = IWEVCUSTOM;
 	snprintf(sbuf, sizeof(sbuf), "bcn_int=%d", beacon);
 	iwe.u.data.length = strlen(sbuf);
-	cev = iwe_stream_add_point(cev, end_buf, &iwe, sbuf);
+	cev = iwe_stream_add_point(info, cev, end_buf, &iwe, sbuf);
 
 	atim = le32_to_cpu(bssid->config.atim_window);
 	devdbg(usbdev, "ATIM %d", atim);
 	iwe.cmd = IWEVCUSTOM;
 	snprintf(sbuf, sizeof(sbuf), "atim=%u", atim);
 	iwe.u.data.length = strlen(sbuf);
-	cev = iwe_stream_add_point(cev, end_buf, &iwe, sbuf);
+	cev = iwe_stream_add_point(info, cev, end_buf, &iwe, sbuf);
 
 	ie = (void *)(bssid->ies + sizeof(struct ndis_80211_fixed_ies));
 	ie_len = min(bssid_len - (int)sizeof(*bssid),
@@ -1742,7 +1762,7 @@ static char *rndis_translate_scan(struct net_device *dev,
 					(ie->id == MFIE_TYPE_RSN) ? 2 : 1);
 			iwe.cmd = IWEVGENIE;
 			iwe.u.data.length = min(ie->len + 2, MAX_WPA_IE_LEN);
-			cev = iwe_stream_add_point(cev, end_buf, &iwe,
+			cev = iwe_stream_add_point(info, cev, end_buf, &iwe,
 								(u8 *)ie);
 		}
 
@@ -1785,8 +1805,8 @@ static int rndis_iw_get_scan(struct net_device *dev,
 	devdbg(usbdev, "SIOCGIWSCAN: %d BSSIDs found", count);
 
 	while (count && ((void *)bssid + bssid_len) <= (buf + len)) {
-		cev = rndis_translate_scan(dev, cev, extra + IW_SCAN_MAX_DATA,
-									bssid);
+		cev = rndis_translate_scan(dev, info, cev,
+					   extra + IW_SCAN_MAX_DATA, bssid);
 		bssid = (void *)bssid + bssid_len;
 		bssid_len = le32_to_cpu(bssid->length);
 		count--;
@@ -2213,7 +2233,9 @@ static void rndis_wext_worker(struct work_struct *work)
 	int assoc_size = sizeof(*info) + IW_CUSTOM_MAX + 32;
 	int ret, offset;
 
-	if (test_and_clear_bit(WORK_CONNECTION_EVENT, &priv->work_pending)) {
+	if (test_and_clear_bit(WORK_LINK_UP, &priv->work_pending)) {
+		netif_carrier_on(usbdev->net);
+
 		info = kzalloc(assoc_size, GFP_KERNEL);
 		if (!info)
 			goto get_bssid;
@@ -2251,6 +2273,15 @@ get_bssid:
 		}
 	}
 
+	if (test_and_clear_bit(WORK_LINK_DOWN, &priv->work_pending)) {
+		netif_carrier_off(usbdev->net);
+
+		evt.data.flags = 0;
+		evt.data.length = 0;
+		memset(evt.ap_addr.sa_data, 0, ETH_ALEN);
+		wireless_send_event(usbdev->net, SIOCGIWAP, &evt, NULL);
+	}
+
 	if (test_and_clear_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
 		set_multicast_list(usbdev);
 }
@@ -2260,29 +2291,24 @@ static void rndis_wext_set_multicast_list(struct net_device *dev)
 	struct usbnet *usbdev = dev->priv;
 	struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev);
 
+	if (test_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending))
+		return;
+
 	set_bit(WORK_SET_MULTICAST_LIST, &priv->work_pending);
 	queue_work(priv->workqueue, &priv->work);
 }
 
-static void rndis_wext_link_change(struct usbnet *dev, int state)
+static void rndis_wext_link_change(struct usbnet *usbdev, int state)
 {
-	struct rndis_wext_private *priv = get_rndis_wext_priv(dev);
-	union iwreq_data evt;
+	struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev);
 
-	if (state) {
-		/* queue work to avoid recursive calls into rndis_command */
-		set_bit(WORK_CONNECTION_EVENT, &priv->work_pending);
-		queue_work(priv->workqueue, &priv->work);
-	} else {
-		evt.data.flags = 0;
-		evt.data.length = 0;
-		memset(evt.ap_addr.sa_data, 0, ETH_ALEN);
-		wireless_send_event(dev->net, SIOCGIWAP, &evt, NULL);
-	}
+	/* queue work to avoid recursive calls into rndis_command */
+	set_bit(state ? WORK_LINK_UP : WORK_LINK_DOWN, &priv->work_pending);
+	queue_work(priv->workqueue, &priv->work);
 }
 
 
-static int rndis_wext_get_caps(struct usbnet *dev)
+static int rndis_wext_get_caps(struct usbnet *usbdev)
 {
 	struct {
 		__le32	num_items;
@@ -2290,18 +2316,18 @@ static int rndis_wext_get_caps(struct usbnet *dev)
 	} networks_supported;
 	int len, retval, i, n;
 	__le32 tx_power;
-	struct rndis_wext_private *priv = get_rndis_wext_priv(dev);
+	struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev);
 
 	/* determine if supports setting txpower */
 	len = sizeof(tx_power);
-	retval = rndis_query_oid(dev, OID_802_11_TX_POWER_LEVEL, &tx_power,
-								&len);
+	retval = rndis_query_oid(usbdev, OID_802_11_TX_POWER_LEVEL, &tx_power,
+									&len);
 	if (retval == 0 && le32_to_cpu(tx_power) != 0xFF)
 		priv->caps |= CAP_SUPPORT_TXPOWER;
 
 	/* determine supported modes */
 	len = sizeof(networks_supported);
-	retval = rndis_query_oid(dev, OID_802_11_NETWORK_TYPES_SUPPORTED,
+	retval = rndis_query_oid(usbdev, OID_802_11_NETWORK_TYPES_SUPPORTED,
 						&networks_supported, &len);
 	if (retval >= 0) {
 		n = le32_to_cpu(networks_supported.num_items);
@@ -2440,9 +2466,9 @@ end:
 }
 
 
-static int bcm4320_early_init(struct usbnet *dev)
+static int bcm4320_early_init(struct usbnet *usbdev)
 {
-	struct rndis_wext_private *priv = get_rndis_wext_priv(dev);
+	struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev);
 	char buf[8];
 
 	/* Early initialization settings, setting these won't have effect
@@ -2490,51 +2516,48 @@ static int bcm4320_early_init(struct usbnet *dev)
 	else
 		priv->param_workaround_interval = modparam_workaround_interval;
 
-	rndis_set_config_parameter_str(dev, "Country", priv->param_country);
-	rndis_set_config_parameter_str(dev, "FrameBursting",
+	rndis_set_config_parameter_str(usbdev, "Country", priv->param_country);
+	rndis_set_config_parameter_str(usbdev, "FrameBursting",
 					priv->param_frameburst ? "1" : "0");
-	rndis_set_config_parameter_str(dev, "Afterburner",
+	rndis_set_config_parameter_str(usbdev, "Afterburner",
 					priv->param_afterburner ? "1" : "0");
 	sprintf(buf, "%d", priv->param_power_save);
-	rndis_set_config_parameter_str(dev, "PowerSaveMode", buf);
+	rndis_set_config_parameter_str(usbdev, "PowerSaveMode", buf);
 	sprintf(buf, "%d", priv->param_power_output);
-	rndis_set_config_parameter_str(dev, "PwrOut", buf);
+	rndis_set_config_parameter_str(usbdev, "PwrOut", buf);
 	sprintf(buf, "%d", priv->param_roamtrigger);
-	rndis_set_config_parameter_str(dev, "RoamTrigger", buf);
+	rndis_set_config_parameter_str(usbdev, "RoamTrigger", buf);
 	sprintf(buf, "%d", priv->param_roamdelta);
-	rndis_set_config_parameter_str(dev, "RoamDelta", buf);
+	rndis_set_config_parameter_str(usbdev, "RoamDelta", buf);
 
 	return 0;
 }
 
 
-static int rndis_wext_bind(struct usbnet *dev, struct usb_interface *intf)
+static int rndis_wext_bind(struct usbnet *usbdev, struct usb_interface *intf)
 {
-	struct net_device *net = dev->net;
 	struct rndis_wext_private *priv;
 	int retval, len;
 	__le32 tmp;
 
 	/* allocate rndis private data */
-	priv = kmalloc(sizeof(struct rndis_wext_private), GFP_KERNEL);
+	priv = kzalloc(sizeof(struct rndis_wext_private), GFP_KERNEL);
 	if (!priv)
 		return -ENOMEM;
 
 	/* These have to be initialized before calling generic_rndis_bind().
 	 * Otherwise we'll be in big trouble in rndis_wext_early_init().
 	 */
-	dev->driver_priv = priv;
-	memset(priv, 0, sizeof(*priv));
-	memset(priv->name, 0, sizeof(priv->name));
+	usbdev->driver_priv = priv;
 	strcpy(priv->name, "IEEE802.11");
-	net->wireless_handlers = &rndis_iw_handlers;
-	priv->usbdev = dev;
+	usbdev->net->wireless_handlers = &rndis_iw_handlers;
+	priv->usbdev = usbdev;
 
 	mutex_init(&priv->command_lock);
 	spin_lock_init(&priv->stats_lock);
 
 	/* try bind rndis_host */
-	retval = generic_rndis_bind(dev, intf, FLAG_RNDIS_PHYM_WIRELESS);
+	retval = generic_rndis_bind(usbdev, intf, FLAG_RNDIS_PHYM_WIRELESS);
 	if (retval < 0)
 		goto fail;
 
@@ -2545,20 +2568,21 @@ static int rndis_wext_bind(struct usbnet *dev, struct usb_interface *intf)
 	 * rndis_host wants to avoid all OID as much as possible
 	 * so do promisc/multicast handling in rndis_wext.
 	 */
-	dev->net->set_multicast_list = rndis_wext_set_multicast_list;
+	usbdev->net->set_multicast_list = rndis_wext_set_multicast_list;
 	tmp = RNDIS_PACKET_TYPE_DIRECTED | RNDIS_PACKET_TYPE_BROADCAST;
-	retval = rndis_set_oid(dev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
+	retval = rndis_set_oid(usbdev, OID_GEN_CURRENT_PACKET_FILTER, &tmp,
 								sizeof(tmp));
 
 	len = sizeof(tmp);
-	retval = rndis_query_oid(dev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp, &len);
+	retval = rndis_query_oid(usbdev, OID_802_3_MAXIMUM_LIST_SIZE, &tmp,
+								&len);
 	priv->multicast_size = le32_to_cpu(tmp);
 	if (retval < 0 || priv->multicast_size < 0)
 		priv->multicast_size = 0;
 	if (priv->multicast_size > 0)
-		dev->net->flags |= IFF_MULTICAST;
+		usbdev->net->flags |= IFF_MULTICAST;
 	else
-		dev->net->flags &= ~IFF_MULTICAST;
+		usbdev->net->flags &= ~IFF_MULTICAST;
 
 	priv->iwstats.qual.qual = 0;
 	priv->iwstats.qual.level = 0;
@@ -2568,12 +2592,13 @@ static int rndis_wext_bind(struct usbnet *dev, struct usb_interface *intf)
 					| IW_QUAL_QUAL_INVALID
 					| IW_QUAL_LEVEL_INVALID;
 
-	rndis_wext_get_caps(dev);
-	set_default_iw_params(dev);
+	rndis_wext_get_caps(usbdev);
+	set_default_iw_params(usbdev);
 
 	/* turn radio on */
 	priv->radio_on = 1;
-	disassociate(dev, 1);
+	disassociate(usbdev, 1);
+	netif_carrier_off(usbdev->net);
 
 	/* because rndis_command() sleeps we need to use workqueue */
 	priv->workqueue = create_singlethread_workqueue("rndis_wlan");
@@ -2590,12 +2615,12 @@ fail:
 }
 
 
-static void rndis_wext_unbind(struct usbnet *dev, struct usb_interface *intf)
+static void rndis_wext_unbind(struct usbnet *usbdev, struct usb_interface *intf)
 {
-	struct rndis_wext_private *priv = get_rndis_wext_priv(dev);
+	struct rndis_wext_private *priv = get_rndis_wext_priv(usbdev);
 
 	/* turn radio off */
-	disassociate(dev, 0);
+	disassociate(usbdev, 0);
 
 	cancel_delayed_work_sync(&priv->stats_work);
 	cancel_work_sync(&priv->work);
@@ -2606,13 +2631,13 @@ static void rndis_wext_unbind(struct usbnet *dev, struct usb_interface *intf)
 		kfree(priv->wpa_ie);
 	kfree(priv);
 
-	rndis_unbind(dev, intf);
+	rndis_unbind(usbdev, intf);
 }
 
 
-static int rndis_wext_reset(struct usbnet *dev)
+static int rndis_wext_reset(struct usbnet *usbdev)
 {
-	return deauthenticate(dev);
+	return deauthenticate(usbdev);
 }