Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem

29 files changed, 907 insertions, 402 deletions

diff --git a/net/bluetooth/Kconfig b/net/bluetooth/Kconfig
index ee3b304..ed37168 100644
--- a/net/bluetooth/Kconfig
+++ b/net/bluetooth/Kconfig
@@ -43,19 +43,6 @@ config BT_L2CAP
 	  Say Y here to compile L2CAP support into the kernel or say M to
 	  compile it as module (l2cap).
 
-config BT_L2CAP_EXT_FEATURES
-	bool "L2CAP Extended Features support (EXPERIMENTAL)"
-	depends on BT_L2CAP && EXPERIMENTAL
-	help
-	  This option enables the L2CAP Extended Features support. These
-	  new features include the Enhanced Retransmission and Streaming
-	  Modes, the Frame Check Sequence (FCS), and Segmentation and
-	  Reassembly (SAR) for L2CAP packets. They are a required for the
-	  new Alternate MAC/PHY and the Bluetooth Medical Profile.
-
-	  You should say N unless you know what you are doing. Note that
-	  this is in an experimental state yet.
-
 config BT_SCO
 	tristate "SCO links support"
 	depends on BT
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 800b6b9..0b1e460 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -1,6 +1,6 @@
 /*
    BlueZ - Bluetooth protocol stack for Linux
-   Copyright (C) 2000-2001 Qualcomm Incorporated
+   Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
 
    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
 
@@ -155,6 +155,27 @@ void hci_setup_sync(struct hci_conn *conn, __u16 handle)
 	hci_send_cmd(hdev, HCI_OP_SETUP_SYNC_CONN, sizeof(cp), &cp);
 }
 
+/* Device _must_ be locked */
+void hci_sco_setup(struct hci_conn *conn, __u8 status)
+{
+	struct hci_conn *sco = conn->link;
+
+	BT_DBG("%p", conn);
+
+	if (!sco)
+		return;
+
+	if (!status) {
+		if (lmp_esco_capable(conn->hdev))
+			hci_setup_sync(sco, conn->handle);
+		else
+			hci_add_sco(sco, conn->handle);
+	} else {
+		hci_proto_connect_cfm(sco, status);
+		hci_conn_del(sco);
+	}
+}
+
 static void hci_conn_timeout(unsigned long arg)
 {
 	struct hci_conn *conn = (void *) arg;
@@ -385,10 +406,13 @@ struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8
 		acl->power_save = 1;
 		hci_conn_enter_active_mode(acl);
 
-		if (lmp_esco_capable(hdev))
-			hci_setup_sync(sco, acl->handle);
-		else
-			hci_add_sco(sco, acl->handle);
+		if (test_bit(HCI_CONN_MODE_CHANGE_PEND, &acl->pend)) {
+			/* defer SCO setup until mode change completed */
+			set_bit(HCI_CONN_SCO_SETUP_PEND, &acl->pend);
+			return sco;
+		}
+
+		hci_sco_setup(acl, 0x00);
 	}
 
 	return sco;
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 2f768de..8303f1c 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -562,6 +562,7 @@ static int hci_dev_do_close(struct hci_dev *hdev)
 	hci_dev_lock_bh(hdev);
 	inquiry_cache_flush(hdev);
 	hci_conn_hash_flush(hdev);
+	hci_blacklist_clear(hdev);
 	hci_dev_unlock_bh(hdev);
 
 	hci_notify(hdev, HCI_DEV_DOWN);
@@ -913,7 +914,7 @@ int hci_register_dev(struct hci_dev *hdev)
 	skb_queue_head_init(&hdev->cmd_q);
 	skb_queue_head_init(&hdev->raw_q);
 
-	for (i = 0; i < 3; i++)
+	for (i = 0; i < NUM_REASSEMBLY; i++)
 		hdev->reassembly[i] = NULL;
 
 	init_waitqueue_head(&hdev->req_wait_q);
@@ -923,6 +924,8 @@ int hci_register_dev(struct hci_dev *hdev)
 
 	hci_conn_hash_init(hdev);
 
+	INIT_LIST_HEAD(&hdev->blacklist.list);
+
 	memset(&hdev->stat, 0, sizeof(struct hci_dev_stats));
 
 	atomic_set(&hdev->promisc, 0);
@@ -970,7 +973,7 @@ int hci_unregister_dev(struct hci_dev *hdev)
 
 	hci_dev_do_close(hdev);
 
-	for (i = 0; i < 3; i++)
+	for (i = 0; i < NUM_REASSEMBLY; i++)
 		kfree_skb(hdev->reassembly[i]);
 
 	hci_notify(hdev, HCI_DEV_UNREG);
@@ -1030,89 +1033,170 @@ int hci_recv_frame(struct sk_buff *skb)
 }
 EXPORT_SYMBOL(hci_recv_frame);
 
-/* Receive packet type fragment */
-#define __reassembly(hdev, type)  ((hdev)->reassembly[(type) - 2])
-
-int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count)
+static int hci_reassembly(struct hci_dev *hdev, int type, void *data,
+			  int count, __u8 index, gfp_t gfp_mask)
 {
-	if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT)
+	int len = 0;
+	int hlen = 0;
+	int remain = count;
+	struct sk_buff *skb;
+	struct bt_skb_cb *scb;
+
+	if ((type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT) ||
+				index >= NUM_REASSEMBLY)
 		return -EILSEQ;
 
+	skb = hdev->reassembly[index];
+
+	if (!skb) {
+		switch (type) {
+		case HCI_ACLDATA_PKT:
+			len = HCI_MAX_FRAME_SIZE;
+			hlen = HCI_ACL_HDR_SIZE;
+			break;
+		case HCI_EVENT_PKT:
+			len = HCI_MAX_EVENT_SIZE;
+			hlen = HCI_EVENT_HDR_SIZE;
+			break;
+		case HCI_SCODATA_PKT:
+			len = HCI_MAX_SCO_SIZE;
+			hlen = HCI_SCO_HDR_SIZE;
+			break;
+		}
+
+		skb = bt_skb_alloc(len, gfp_mask);
+		if (!skb)
+			return -ENOMEM;
+
+		scb = (void *) skb->cb;
+		scb->expect = hlen;
+		scb->pkt_type = type;
+
+		skb->dev = (void *) hdev;
+		hdev->reassembly[index] = skb;
+	}
+
 	while (count) {
-		struct sk_buff *skb = __reassembly(hdev, type);
-		struct { int expect; } *scb;
-		int len = 0;
+		scb = (void *) skb->cb;
+		len = min(scb->expect, (__u16)count);
 
-		if (!skb) {
-			/* Start of the frame */
+		memcpy(skb_put(skb, len), data, len);
 
-			switch (type) {
-			case HCI_EVENT_PKT:
-				if (count >= HCI_EVENT_HDR_SIZE) {
-					struct hci_event_hdr *h = data;
-					len = HCI_EVENT_HDR_SIZE + h->plen;
-				} else
-					return -EILSEQ;
-				break;
+		count -= len;
+		data += len;
+		scb->expect -= len;
+		remain = count;
 
-			case HCI_ACLDATA_PKT:
-				if (count >= HCI_ACL_HDR_SIZE) {
-					struct hci_acl_hdr *h = data;
-					len = HCI_ACL_HDR_SIZE + __le16_to_cpu(h->dlen);
-				} else
-					return -EILSEQ;
-				break;
+		switch (type) {
+		case HCI_EVENT_PKT:
+			if (skb->len == HCI_EVENT_HDR_SIZE) {
+				struct hci_event_hdr *h = hci_event_hdr(skb);
+				scb->expect = h->plen;
+
+				if (skb_tailroom(skb) < scb->expect) {
+					kfree_skb(skb);
+					hdev->reassembly[index] = NULL;
+					return -ENOMEM;
+				}
+			}
+			break;
 
-			case HCI_SCODATA_PKT:
-				if (count >= HCI_SCO_HDR_SIZE) {
-					struct hci_sco_hdr *h = data;
-					len = HCI_SCO_HDR_SIZE + h->dlen;
-				} else
-					return -EILSEQ;
-				break;
+		case HCI_ACLDATA_PKT:
+			if (skb->len  == HCI_ACL_HDR_SIZE) {
+				struct hci_acl_hdr *h = hci_acl_hdr(skb);
+				scb->expect = __le16_to_cpu(h->dlen);
+
+				if (skb_tailroom(skb) < scb->expect) {
+					kfree_skb(skb);
+					hdev->reassembly[index] = NULL;
+					return -ENOMEM;
+				}
 			}
+			break;
 
-			skb = bt_skb_alloc(len, GFP_ATOMIC);
-			if (!skb) {
-				BT_ERR("%s no memory for packet", hdev->name);
-				return -ENOMEM;
+		case HCI_SCODATA_PKT:
+			if (skb->len == HCI_SCO_HDR_SIZE) {
+				struct hci_sco_hdr *h = hci_sco_hdr(skb);
+				scb->expect = h->dlen;
+
+				if (skb_tailroom(skb) < scb->expect) {
+					kfree_skb(skb);
+					hdev->reassembly[index] = NULL;
+					return -ENOMEM;
+				}
 			}
+			break;
+		}
+
+		if (scb->expect == 0) {
+			/* Complete frame */
 
-			skb->dev = (void *) hdev;
 			bt_cb(skb)->pkt_type = type;
+			hci_recv_frame(skb);
 
-			__reassembly(hdev, type) = skb;
+			hdev->reassembly[index] = NULL;
+			return remain;
+		}
+	}
 
-			scb = (void *) skb->cb;
-			scb->expect = len;
-		} else {
-			/* Continuation */
+	return remain;
+}
 
-			scb = (void *) skb->cb;
-			len = scb->expect;
-		}
+int hci_recv_fragment(struct hci_dev *hdev, int type, void *data, int count)
+{
+	int rem = 0;
 
-		len = min(len, count);
+	if (type < HCI_ACLDATA_PKT || type > HCI_EVENT_PKT)
+		return -EILSEQ;
 
-		memcpy(skb_put(skb, len), data, len);
+	while (count) {
+		rem = hci_reassembly(hdev, type, data, count,
+						type - 1, GFP_ATOMIC);
+		if (rem < 0)
+			return rem;
 
-		scb->expect -= len;
+		data += (count - rem);
+		count = rem;
+	};
 
-		if (scb->expect == 0) {
-			/* Complete frame */
+	return rem;
+}
+EXPORT_SYMBOL(hci_recv_fragment);
 
-			__reassembly(hdev, type) = NULL;
+#define STREAM_REASSEMBLY 0
 
-			bt_cb(skb)->pkt_type = type;
-			hci_recv_frame(skb);
-		}
+int hci_recv_stream_fragment(struct hci_dev *hdev, void *data, int count)
+{
+	int type;
+	int rem = 0;
 
-		count -= len; data += len;
-	}
+	while (count) {
+		struct sk_buff *skb = hdev->reassembly[STREAM_REASSEMBLY];
 
-	return 0;
+		if (!skb) {
+			struct { char type; } *pkt;
+
+			/* Start of the frame */
+			pkt = data;
+			type = pkt->type;
+
+			data++;
+			count--;
+		} else
+			type = bt_cb(skb)->pkt_type;
+
+		rem = hci_reassembly(hdev, type, data,
+					count, STREAM_REASSEMBLY, GFP_ATOMIC);
+		if (rem < 0)
+			return rem;
+
+		data += (count - rem);
+		count = rem;
+	};
+
+	return rem;
 }
-EXPORT_SYMBOL(hci_recv_fragment);
+EXPORT_SYMBOL(hci_recv_stream_fragment);
 
 /* ---- Interface to upper protocols ---- */
 
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 786b5de..bfef5ba 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1,6 +1,6 @@
 /*
    BlueZ - Bluetooth protocol stack for Linux
-   Copyright (C) 2000-2001 Qualcomm Incorporated
+   Copyright (c) 2000-2001, 2010, Code Aurora Forum. All rights reserved.
 
    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
 
@@ -584,7 +584,7 @@ static inline void hci_cs_create_conn(struct hci_dev *hdev, __u8 status)
 				conn->out = 1;
 				conn->link_mode |= HCI_LM_MASTER;
 			} else
-				BT_ERR("No memmory for new connection");
+				BT_ERR("No memory for new connection");
 		}
 	}
 
@@ -785,9 +785,13 @@ static void hci_cs_sniff_mode(struct hci_dev *hdev, __u8 status)
 	hci_dev_lock(hdev);
 
 	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
-	if (conn)
+	if (conn) {
 		clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend);
 
+		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->pend))
+			hci_sco_setup(conn, status);
+	}
+
 	hci_dev_unlock(hdev);
 }
 
@@ -808,9 +812,13 @@ static void hci_cs_exit_sniff_mode(struct hci_dev *hdev, __u8 status)
 	hci_dev_lock(hdev);
 
 	conn = hci_conn_hash_lookup_handle(hdev, __le16_to_cpu(cp->handle));
-	if (conn)
+	if (conn) {
 		clear_bit(HCI_CONN_MODE_CHANGE_PEND, &conn->pend);
 
+		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->pend))
+			hci_sco_setup(conn, status);
+	}
+
 	hci_dev_unlock(hdev);
 }
 
@@ -915,20 +923,8 @@ static inline void hci_conn_complete_evt(struct hci_dev *hdev, struct sk_buff *s
 	} else
 		conn->state = BT_CLOSED;
 
-	if (conn->type == ACL_LINK) {
-		struct hci_conn *sco = conn->link;
-		if (sco) {
-			if (!ev->status) {
-				if (lmp_esco_capable(hdev))
-					hci_setup_sync(sco, conn->handle);
-				else
-					hci_add_sco(sco, conn->handle);
-			} else {
-				hci_proto_connect_cfm(sco, ev->status);
-				hci_conn_del(sco);
-			}
-		}
-	}
+	if (conn->type == ACL_LINK)
+		hci_sco_setup(conn, ev->status);
 
 	if (ev->status) {
 		hci_proto_connect_cfm(conn, ev->status);
@@ -952,7 +948,7 @@ static inline void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *sk
 
 	mask |= hci_proto_connect_ind(hdev, &ev->bdaddr, ev->link_type);
 
-	if (mask & HCI_LM_ACCEPT) {
+	if ((mask & HCI_LM_ACCEPT) && !hci_blacklist_lookup(hdev, &ev->bdaddr)) {
 		/* Connection accepted */
 		struct inquiry_entry *ie;
 		struct hci_conn *conn;
@@ -965,7 +961,7 @@ static inline void hci_conn_request_evt(struct hci_dev *hdev, struct sk_buff *sk
 		conn = hci_conn_hash_lookup_ba(hdev, ev->link_type, &ev->bdaddr);
 		if (!conn) {
 			if (!(conn = hci_conn_add(hdev, ev->link_type, &ev->bdaddr))) {
-				BT_ERR("No memmory for new connection");
+				BT_ERR("No memory for new connection");
 				hci_dev_unlock(hdev);
 				return;
 			}
@@ -1481,6 +1477,9 @@ static inline void hci_mode_change_evt(struct hci_dev *hdev, struct sk_buff *skb
 			else
 				conn->power_save = 0;
 		}
+
+		if (test_and_clear_bit(HCI_CONN_SCO_SETUP_PEND, &conn->pend))
+			hci_sco_setup(conn, ev->status);
 	}
 
 	hci_dev_unlock(hdev);
diff --git a/net/bluetooth/hci_sock.c b/net/bluetooth/hci_sock.c
index 38f08f6..4f170a5 100644
--- a/net/bluetooth/hci_sock.c
+++ b/net/bluetooth/hci_sock.c
@@ -165,6 +165,86 @@ static int hci_sock_release(struct socket *sock)
 	return 0;
 }
 
+struct bdaddr_list *hci_blacklist_lookup(struct hci_dev *hdev, bdaddr_t *bdaddr)
+{
+	struct list_head *p;
+	struct bdaddr_list *blacklist = &hdev->blacklist;
+
+	list_for_each(p, &blacklist->list) {
+		struct bdaddr_list *b;
+
+		b = list_entry(p, struct bdaddr_list, list);
+
+		if (bacmp(bdaddr, &b->bdaddr) == 0)
+			return b;
+	}
+
+	return NULL;
+}
+
+static int hci_blacklist_add(struct hci_dev *hdev, void __user *arg)
+{
+	bdaddr_t bdaddr;
+	struct bdaddr_list *entry;
+
+	if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
+		return -EFAULT;
+
+	if (bacmp(&bdaddr, BDADDR_ANY) == 0)
+		return -EBADF;
+
+	if (hci_blacklist_lookup(hdev, &bdaddr))
+		return -EEXIST;
+
+	entry = kzalloc(sizeof(struct bdaddr_list), GFP_KERNEL);
+	if (!entry)
+		return -ENOMEM;
+
+	bacpy(&entry->bdaddr, &bdaddr);
+
+	list_add(&entry->list, &hdev->blacklist.list);
+
+	return 0;
+}
+
+int hci_blacklist_clear(struct hci_dev *hdev)
+{
+	struct list_head *p, *n;
+	struct bdaddr_list *blacklist = &hdev->blacklist;
+
+	list_for_each_safe(p, n, &blacklist->list) {
+		struct bdaddr_list *b;
+
+		b = list_entry(p, struct bdaddr_list, list);
+
+		list_del(p);
+		kfree(b);
+	}
+
+	return 0;
+}
+
+static int hci_blacklist_del(struct hci_dev *hdev, void __user *arg)
+{
+	bdaddr_t bdaddr;
+	struct bdaddr_list *entry;
+
+	if (copy_from_user(&bdaddr, arg, sizeof(bdaddr)))
+		return -EFAULT;
+
+	if (bacmp(&bdaddr, BDADDR_ANY) == 0)
+		return hci_blacklist_clear(hdev);
+
+	entry = hci_blacklist_lookup(hdev, &bdaddr);
+	if (!entry)
+		return -ENOENT;
+
+	list_del(&entry->list);
+	kfree(entry);
+
+	return 0;
+}
+
 /* Ioctls that require bound socket */
 static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsigned long arg)
 {
@@ -194,6 +274,16 @@ static inline int hci_sock_bound_ioctl(struct sock *sk, unsigned int cmd, unsign
 	case HCIGETAUTHINFO:
 		return hci_get_auth_info(hdev, (void __user *) arg);
 
+	case HCIBLOCKADDR:
+		if (!capable(CAP_NET_ADMIN))
+			return -EACCES;
+		return hci_blacklist_add(hdev, (void __user *) arg);
+
+	case HCIUNBLOCKADDR:
+		if (!capable(CAP_NET_ADMIN))
+			return -EACCES;
+		return hci_blacklist_del(hdev, (void __user *) arg);
+
 	default:
 		if (hdev->ioctl)
 			return hdev->ioctl(hdev, cmd, arg);
diff --git a/net/bluetooth/hci_sysfs.c b/net/bluetooth/hci_sysfs.c
index 463ffa4..ce44c47 100644
--- a/net/bluetooth/hci_sysfs.c
+++ b/net/bluetooth/hci_sysfs.c
@@ -436,6 +436,41 @@ static const struct file_operations inquiry_cache_fops = {
 	.release	= single_release,
 };
 
+static int blacklist_show(struct seq_file *f, void *p)
+{
+	struct hci_dev *hdev = f->private;
+	struct bdaddr_list *blacklist = &hdev->blacklist;
+	struct list_head *l;
+
+	hci_dev_lock_bh(hdev);
+
+	list_for_each(l, &blacklist->list) {
+		struct bdaddr_list *b;
+		bdaddr_t bdaddr;
+
+		b = list_entry(l, struct bdaddr_list, list);
+
+		baswap(&bdaddr, &b->bdaddr);
+
+		seq_printf(f, "%s\n", batostr(&bdaddr));
+	}
+
+	hci_dev_unlock_bh(hdev);
+
+	return 0;
+}
+
+static int blacklist_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, blacklist_show, inode->i_private);
+}
+
+static const struct file_operations blacklist_fops = {
+	.open		= blacklist_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
 int hci_register_sysfs(struct hci_dev *hdev)
 {
 	struct device *dev = &hdev->dev;
@@ -465,6 +500,9 @@ int hci_register_sysfs(struct hci_dev *hdev)
 	debugfs_create_file("inquiry_cache", 0444, hdev->debugfs,
 						hdev, &inquiry_cache_fops);
 
+	debugfs_create_file("blacklist", 0444, hdev->debugfs,
+						hdev, &blacklist_fops);
+
 	return 0;
 }
 
diff --git a/net/bluetooth/l2cap.c b/net/bluetooth/l2cap.c
index cf3c407..9ba1e8e 100644
--- a/net/bluetooth/l2cap.c
+++ b/net/bluetooth/l2cap.c
@@ -1,6 +1,8 @@
 /*
    BlueZ - Bluetooth protocol stack for Linux
    Copyright (C) 2000-2001 Qualcomm Incorporated
+   Copyright (C) 2009-2010 Gustavo F. Padovan <gustavo@padovan.org>
+   Copyright (C) 2010 Google Inc.
 
    Written 2000,2001 by Maxim Krasnyansky <maxk@qualcomm.com>
 
@@ -53,15 +55,9 @@
 #include <net/bluetooth/hci_core.h>
 #include <net/bluetooth/l2cap.h>
 
-#define VERSION "2.14"
+#define VERSION "2.15"
 
-#ifdef CONFIG_BT_L2CAP_EXT_FEATURES
-static int enable_ertm = 1;
-#else
-static int enable_ertm = 0;
-#endif
-static int max_transmit = L2CAP_DEFAULT_MAX_TX;
-static int tx_window = L2CAP_DEFAULT_TX_WINDOW;
+static int disable_ertm = 0;
 
 static u32 l2cap_feat_mask = L2CAP_FEAT_FIXED_CHAN;
 static u8 l2cap_fixed_chan[8] = { 0x02, };
@@ -80,9 +76,12 @@ static void __l2cap_sock_close(struct sock *sk, int reason);
 static void l2cap_sock_close(struct sock *sk);
 static void l2cap_sock_kill(struct sock *sk);
 
+static int l2cap_build_conf_req(struct sock *sk, void *data);
 static struct sk_buff *l2cap_build_cmd(struct l2cap_conn *conn,
 				u8 code, u8 ident, u16 dlen, void *data);
 
+static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb);
+
 /* ---- L2CAP timers ---- */
 static void l2cap_sock_timeout(unsigned long arg)
 {
@@ -278,6 +277,24 @@ static void l2cap_chan_del(struct sock *sk, int err)
 		parent->sk_data_ready(parent, 0);
 	} else
 		sk->sk_state_change(sk);
+
+	skb_queue_purge(TX_QUEUE(sk));
+
+	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+		struct srej_list *l, *tmp;
+
+		del_timer(&l2cap_pi(sk)->retrans_timer);
+		del_timer(&l2cap_pi(sk)->monitor_timer);
+		del_timer(&l2cap_pi(sk)->ack_timer);
+
+		skb_queue_purge(SREJ_QUEUE(sk));
+		skb_queue_purge(BUSY_QUEUE(sk));
+
+		list_for_each_entry_safe(l, tmp, SREJ_LIST(sk), list) {
+			list_del(&l->list);
+			kfree(l);
+		}
+	}
 }
 
 /* Service level security */
@@ -351,8 +368,12 @@ static inline void l2cap_send_sframe(struct l2cap_pinfo *pi, u16 control)
 	struct sk_buff *skb;
 	struct l2cap_hdr *lh;
 	struct l2cap_conn *conn = pi->conn;
+	struct sock *sk = (struct sock *)pi;
 	int count, hlen = L2CAP_HDR_SIZE + 2;
 
+	if (sk->sk_state != BT_CONNECTED)
+		return;
+
 	if (pi->fcs == L2CAP_FCS_CRC16)
 		hlen += 2;
 
@@ -440,24 +461,57 @@ static void l2cap_do_start(struct sock *sk)
 	}
 }
 
-static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk)
+static inline int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
+{
+	u32 local_feat_mask = l2cap_feat_mask;
+	if (!disable_ertm)
+		local_feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING;
+
+	switch (mode) {
+	case L2CAP_MODE_ERTM:
+		return L2CAP_FEAT_ERTM & feat_mask & local_feat_mask;
+	case L2CAP_MODE_STREAMING:
+		return L2CAP_FEAT_STREAMING & feat_mask & local_feat_mask;
+	default:
+		return 0x00;
+	}
+}
+
+static void l2cap_send_disconn_req(struct l2cap_conn *conn, struct sock *sk, int err)
 {
 	struct l2cap_disconn_req req;
 
+	if (!conn)
+		return;
+
+	skb_queue_purge(TX_QUEUE(sk));
+
+	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
+		del_timer(&l2cap_pi(sk)->retrans_timer);
+		del_timer(&l2cap_pi(sk)->monitor_timer);
+		del_timer(&l2cap_pi(sk)->ack_timer);
+	}
+
 	req.dcid = cpu_to_le16(l2cap_pi(sk)->dcid);
 	req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
 	l2cap_send_cmd(conn, l2cap_get_ident(conn),
 			L2CAP_DISCONN_REQ, sizeof(req), &req);
+
+	sk->sk_state = BT_DISCONN;
+	sk->sk_err = err;
 }
 
 /* ---- L2CAP connections ---- */
 static void l2cap_conn_start(struct l2cap_conn *conn)
 {
 	struct l2cap_chan_list *l = &conn->chan_list;
+	struct sock_del_list del, *tmp1, *tmp2;
 	struct sock *sk;
 
 	BT_DBG("conn %p", conn);
 
+	INIT_LIST_HEAD(&del.list);
+
 	read_lock(&l->lock);
 
 	for (sk = l->head; sk; sk = l2cap_pi(sk)->next_c) {
@@ -470,20 +524,38 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
 		}
 
 		if (sk->sk_state == BT_CONNECT) {
-			if (l2cap_check_security(sk) &&
-					__l2cap_no_conn_pending(sk)) {
-				struct l2cap_conn_req req;
-				req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
-				req.psm  = l2cap_pi(sk)->psm;
+			struct l2cap_conn_req req;
 
-				l2cap_pi(sk)->ident = l2cap_get_ident(conn);
-				l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
+			if (!l2cap_check_security(sk) ||
+					!__l2cap_no_conn_pending(sk)) {
+				bh_unlock_sock(sk);
+				continue;
+			}
 
-				l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
-					L2CAP_CONN_REQ, sizeof(req), &req);
+			if (!l2cap_mode_supported(l2cap_pi(sk)->mode,
+					conn->feat_mask)
+					&& l2cap_pi(sk)->conf_state &
+					L2CAP_CONF_STATE2_DEVICE) {
+				tmp1 = kzalloc(sizeof(struct sock_del_list),
+						GFP_ATOMIC);
+				tmp1->sk = sk;
+				list_add_tail(&tmp1->list, &del.list);
+				bh_unlock_sock(sk);
+				continue;
 			}
+
+			req.scid = cpu_to_le16(l2cap_pi(sk)->scid);
+			req.psm  = l2cap_pi(sk)->psm;
+
+			l2cap_pi(sk)->ident = l2cap_get_ident(conn);
+			l2cap_pi(sk)->conf_state |= L2CAP_CONF_CONNECT_PEND;
+
+			l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
+				L2CAP_CONN_REQ, sizeof(req), &req);
+
 		} else if (sk->sk_state == BT_CONNECT2) {
 			struct l2cap_conn_rsp rsp;
+			char buf[128];
 			rsp.scid = cpu_to_le16(l2cap_pi(sk)->dcid);
 			rsp.dcid = cpu_to_le16(l2cap_pi(sk)->scid);
 
@@ -506,12 +578,31 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
 
 			l2cap_send_cmd(conn, l2cap_pi(sk)->ident,
 					L2CAP_CONN_RSP, sizeof(rsp), &rsp);
+
+			if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT ||
+					rsp.result != L2CAP_CR_SUCCESS) {
+				bh_unlock_sock(sk);
+				continue;
+			}
+
+			l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+			l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+						l2cap_build_conf_req(sk, buf), buf);
+			l2cap_pi(sk)->num_conf_req++;
 		}
 
 		bh_unlock_sock(sk);
 	}
 
 	read_unlock(&l->lock);
+
+	list_for_each_entry_safe(tmp1, tmp2, &del.list, list) {
+		bh_lock_sock(tmp1->sk);
+		__l2cap_sock_close(tmp1->sk, ECONNRESET);
+		bh_unlock_sock(tmp1->sk);
+		list_del(&tmp1->list);
+		kfree(tmp1);
+	}
 }
 
 static void l2cap_conn_ready(struct l2cap_conn *conn)
@@ -740,9 +831,8 @@ static void __l2cap_sock_close(struct sock *sk, int reason)
 				sk->sk_type == SOCK_STREAM) {
 			struct l2cap_conn *conn = l2cap_pi(sk)->conn;
 
-			sk->sk_state = BT_DISCONN;
 			l2cap_sock_set_timer(sk, sk->sk_sndtimeo);
-			l2cap_send_disconn_req(conn, sk);
+			l2cap_send_disconn_req(conn, sk, reason);
 		} else
 			l2cap_chan_del(sk, reason);
 		break;
@@ -802,6 +892,7 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent)
 
 		pi->imtu = l2cap_pi(parent)->imtu;
 		pi->omtu = l2cap_pi(parent)->omtu;
+		pi->conf_state = l2cap_pi(parent)->conf_state;
 		pi->mode = l2cap_pi(parent)->mode;
 		pi->fcs  = l2cap_pi(parent)->fcs;
 		pi->max_tx = l2cap_pi(parent)->max_tx;
@@ -812,13 +903,15 @@ static void l2cap_sock_init(struct sock *sk, struct sock *parent)
 	} else {
 		pi->imtu = L2CAP_DEFAULT_MTU;
 		pi->omtu = 0;
-		if (enable_ertm && sk->sk_type == SOCK_STREAM)
+		if (!disable_ertm && sk->sk_type == SOCK_STREAM) {
 			pi->mode = L2CAP_MODE_ERTM;
-		else
+			pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
+		} else {
 			pi->mode = L2CAP_MODE_BASIC;
-		pi->max_tx = max_transmit;
+		}
+		pi->max_tx = L2CAP_DEFAULT_MAX_TX;
 		pi->fcs  = L2CAP_FCS_CRC16;
-		pi->tx_win = tx_window;
+		pi->tx_win = L2CAP_DEFAULT_TX_WINDOW;
 		pi->sec_level = BT_SECURITY_LOW;
 		pi->role_switch = 0;
 		pi->force_reliable = 0;
@@ -1067,7 +1160,7 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int al
 		break;
 	case L2CAP_MODE_ERTM:
 	case L2CAP_MODE_STREAMING:
-		if (enable_ertm)
+		if (!disable_ertm)
 			break;
 		/* fall through */
 	default:
@@ -1084,6 +1177,7 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int al
 
 	case BT_CONNECTED:
 		/* Already connected */
+		err = -EISCONN;
 		goto done;
 
 	case BT_OPEN:
@@ -1132,7 +1226,7 @@ static int l2cap_sock_listen(struct socket *sock, int backlog)
 		break;
 	case L2CAP_MODE_ERTM:
 	case L2CAP_MODE_STREAMING:
-		if (enable_ertm)
+		if (!disable_ertm)
 			break;
 		/* fall through */
 	default:
@@ -1285,9 +1379,11 @@ static void l2cap_monitor_timeout(unsigned long arg)
 {
 	struct sock *sk = (void *) arg;
 
+	BT_DBG("sk %p", sk);
+
 	bh_lock_sock(sk);
 	if (l2cap_pi(sk)->retry_count >= l2cap_pi(sk)->remote_max_tx) {
-		l2cap_send_disconn_req(l2cap_pi(sk)->conn, sk);
+		l2cap_send_disconn_req(l2cap_pi(sk)->conn, sk, ECONNABORTED);
 		bh_unlock_sock(sk);
 		return;
 	}
@@ -1303,6 +1399,8 @@ static void l2cap_retrans_timeout(unsigned long arg)
 {
 	struct sock *sk = (void *) arg;
 
+	BT_DBG("sk %p", sk);
+
 	bh_lock_sock(sk);
 	l2cap_pi(sk)->retry_count = 1;
 	__mod_monitor_timer();
@@ -1341,7 +1439,7 @@ static inline void l2cap_do_send(struct sock *sk, struct sk_buff *skb)
 	hci_send_acl(pi->conn->hcon, skb, 0);
 }
 
-static int l2cap_streaming_send(struct sock *sk)
+static void l2cap_streaming_send(struct sock *sk)
 {
 	struct sk_buff *skb, *tx_skb;
 	struct l2cap_pinfo *pi = l2cap_pi(sk);
@@ -1371,7 +1469,6 @@ static int l2cap_streaming_send(struct sock *sk)
 		skb = skb_dequeue(TX_QUEUE(sk));
 		kfree_skb(skb);
 	}
-	return 0;
 }
 
 static void l2cap_retransmit_one_frame(struct sock *sk, u8 tx_seq)
@@ -1395,15 +1492,22 @@ static void l2cap_retransmit_one_frame(struct sock *sk, u8 tx_seq)
 
 	if (pi->remote_max_tx &&
 			bt_cb(skb)->retries == pi->remote_max_tx) {
-		l2cap_send_disconn_req(pi->conn, sk);
+		l2cap_send_disconn_req(pi->conn, sk, ECONNABORTED);
 		return;
 	}
 
 	tx_skb = skb_clone(skb, GFP_ATOMIC);
 	bt_cb(skb)->retries++;
 	control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
+
+	if (pi->conn_state & L2CAP_CONN_SEND_FBIT) {
+		control |= L2CAP_CTRL_FINAL;
+		pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
+	}
+
 	control |= (pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT)
 			| (tx_seq << L2CAP_CTRL_TXSEQ_SHIFT);
+
 	put_unaligned_le16(control, tx_skb->data + L2CAP_HDR_SIZE);
 
 	if (pi->fcs == L2CAP_FCS_CRC16) {
@@ -1421,15 +1525,14 @@ static int l2cap_ertm_send(struct sock *sk)
 	u16 control, fcs;
 	int nsent = 0;
 
-	if (pi->conn_state & L2CAP_CONN_WAIT_F)
-		return 0;
+	if (sk->sk_state != BT_CONNECTED)
+		return -ENOTCONN;
 
-	while ((skb = sk->sk_send_head) && (!l2cap_tx_window_full(sk)) &&
-			!(pi->conn_state & L2CAP_CONN_REMOTE_BUSY)) {
+	while ((skb = sk->sk_send_head) && (!l2cap_tx_window_full(sk))) {
 
 		if (pi->remote_max_tx &&
 				bt_cb(skb)->retries == pi->remote_max_tx) {
-			l2cap_send_disconn_req(pi->conn, sk);
+			l2cap_send_disconn_req(pi->conn, sk, ECONNABORTED);
 			break;
 		}
 
@@ -1438,6 +1541,8 @@ static int l2cap_ertm_send(struct sock *sk)
 		bt_cb(skb)->retries++;
 
 		control = get_unaligned_le16(tx_skb->data + L2CAP_HDR_SIZE);
+		control &= L2CAP_CTRL_SAR;
+
 		if (pi->conn_state & L2CAP_CONN_SEND_FBIT) {
 			control |= L2CAP_CTRL_FINAL;
 			pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
@@ -1478,16 +1583,11 @@ static int l2cap_retransmit_frames(struct sock *sk)
 	struct l2cap_pinfo *pi = l2cap_pi(sk);
 	int ret;
 
-	spin_lock_bh(&pi->send_lock);
-
 	if (!skb_queue_empty(TX_QUEUE(sk)))
 		sk->sk_send_head = TX_QUEUE(sk)->next;
 
 	pi->next_tx_seq = pi->expected_ack_seq;
 	ret = l2cap_ertm_send(sk);
-
-	spin_unlock_bh(&pi->send_lock);
-
 	return ret;
 }
 
@@ -1495,7 +1595,6 @@ static void l2cap_send_ack(struct l2cap_pinfo *pi)
 {
 	struct sock *sk = (struct sock *)pi;
 	u16 control = 0;
-	int nframes;
 
 	control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
 
@@ -1506,11 +1605,7 @@ static void l2cap_send_ack(struct l2cap_pinfo *pi)
 		return;
 	}
 
-	spin_lock_bh(&pi->send_lock);
-	nframes = l2cap_ertm_send(sk);
-	spin_unlock_bh(&pi->send_lock);
-
-	if (nframes > 0)
+	if (l2cap_ertm_send(sk) > 0)
 		return;
 
 	control |= L2CAP_SUPER_RCV_READY;
@@ -1705,10 +1800,8 @@ static inline int l2cap_sar_segment_sdu(struct sock *sk, struct msghdr *msg, siz
 		size += buflen;
 	}
 	skb_queue_splice_tail(&sar_queue, TX_QUEUE(sk));
-	spin_lock_bh(&pi->send_lock);
 	if (sk->sk_send_head == NULL)
 		sk->sk_send_head = sar_queue.next;
-	spin_unlock_bh(&pi->send_lock);
 
 	return size;
 }
@@ -1753,7 +1846,7 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
 	case L2CAP_MODE_BASIC:
 		/* Check outgoing MTU */
 		if (len > pi->omtu) {
-			err = -EINVAL;
+			err = -EMSGSIZE;
 			goto done;
 		}
 
@@ -1780,14 +1873,9 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
 			}
 			__skb_queue_tail(TX_QUEUE(sk), skb);
 
-			if (pi->mode == L2CAP_MODE_ERTM)
-				spin_lock_bh(&pi->send_lock);
-
 			if (sk->sk_send_head == NULL)
 				sk->sk_send_head = skb;
 
-			if (pi->mode == L2CAP_MODE_ERTM)
-				spin_unlock_bh(&pi->send_lock);
 		} else {
 		/* Segment SDU into multiples PDUs */
 			err = l2cap_sar_segment_sdu(sk, msg, len);
@@ -1796,11 +1884,14 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
 		}
 
 		if (pi->mode == L2CAP_MODE_STREAMING) {
-			err = l2cap_streaming_send(sk);
+			l2cap_streaming_send(sk);
 		} else {
-			spin_lock_bh(&pi->send_lock);
+			if (pi->conn_state & L2CAP_CONN_REMOTE_BUSY &&
+					pi->conn_state && L2CAP_CONN_WAIT_F) {
+				err = len;
+				break;
+			}
 			err = l2cap_ertm_send(sk);
-			spin_unlock_bh(&pi->send_lock);
 		}
 
 		if (err >= 0)
@@ -1809,7 +1900,7 @@ static int l2cap_sock_sendmsg(struct kiocb *iocb, struct socket *sock, struct ms
 
 	default:
 		BT_DBG("bad state %1.1x", pi->mode);
-		err = -EINVAL;
+		err = -EBADFD;
 	}
 
 done:
@@ -1825,6 +1916,8 @@ static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct ms
 
 	if (sk->sk_state == BT_CONNECT2 && bt_sk(sk)->defer_setup) {
 		struct l2cap_conn_rsp rsp;
+		struct l2cap_conn *conn = l2cap_pi(sk)->conn;
+		u8 buf[128];
 
 		sk->sk_state = BT_CONFIG;
 
@@ -1835,6 +1928,16 @@ static int l2cap_sock_recvmsg(struct kiocb *iocb, struct socket *sock, struct ms
 		l2cap_send_cmd(l2cap_pi(sk)->conn, l2cap_pi(sk)->ident,
 					L2CAP_CONN_RSP, sizeof(rsp), &rsp);
 
+		if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) {
+			release_sock(sk);
+			return 0;
+		}
+
+		l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+				l2cap_build_conf_req(sk, buf), buf);
+		l2cap_pi(sk)->num_conf_req++;
+
 		release_sock(sk);
 		return 0;
 	}
@@ -1871,13 +1974,19 @@ static int l2cap_sock_setsockopt_old(struct socket *sock, int optname, char __us
 			break;
 		}
 
+		if (opts.txwin_size > L2CAP_DEFAULT_TX_WINDOW) {
+			err = -EINVAL;
+			break;
+		}
+
 		l2cap_pi(sk)->mode = opts.mode;
 		switch (l2cap_pi(sk)->mode) {
 		case L2CAP_MODE_BASIC:
+			l2cap_pi(sk)->conf_state &= ~L2CAP_CONF_STATE2_DEVICE;
 			break;
 		case L2CAP_MODE_ERTM:
 		case L2CAP_MODE_STREAMING:
-			if (enable_ertm)
+			if (!disable_ertm)
 				break;
 			/* fall through */
 		default:
@@ -2145,6 +2254,10 @@ static int l2cap_sock_shutdown(struct socket *sock, int how)
 			err = bt_sock_wait_state(sk, BT_CLOSED,
 							sk->sk_lingertime);
 	}
+
+	if (!err && sk->sk_err)
+		err = -sk->sk_err;
+
 	release_sock(sk);
 	return err;
 }
@@ -2365,25 +2478,10 @@ static inline void l2cap_ertm_init(struct sock *sk)
 
 	__skb_queue_head_init(SREJ_QUEUE(sk));
 	__skb_queue_head_init(BUSY_QUEUE(sk));
-	spin_lock_init(&l2cap_pi(sk)->send_lock);
 
 	INIT_WORK(&l2cap_pi(sk)->busy_work, l2cap_busy_work);
-}
 
-static int l2cap_mode_supported(__u8 mode, __u32 feat_mask)
-{
-	u32 local_feat_mask = l2cap_feat_mask;
-	if (enable_ertm)
-		local_feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING;
-
-	switch (mode) {
-	case L2CAP_MODE_ERTM:
-		return L2CAP_FEAT_ERTM & feat_mask & local_feat_mask;
-	case L2CAP_MODE_STREAMING:
-		return L2CAP_FEAT_STREAMING & feat_mask & local_feat_mask;
-	default:
-		return 0x00;
-	}
+	sk->sk_backlog_rcv = l2cap_ertm_data_rcv;
 }
 
 static inline __u8 l2cap_select_mode(__u8 mode, __u16 remote_feat_mask)
@@ -2414,10 +2512,10 @@ static int l2cap_build_conf_req(struct sock *sk, void *data)
 	switch (pi->mode) {
 	case L2CAP_MODE_STREAMING:
 	case L2CAP_MODE_ERTM:
-		pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
-		if (!l2cap_mode_supported(pi->mode, pi->conn->feat_mask))
-			l2cap_send_disconn_req(pi->conn, sk);
-		break;
+		if (pi->conf_state & L2CAP_CONF_STATE2_DEVICE)
+			break;
+
+		/* fall through */
 	default:
 		pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
 		break;
@@ -2428,6 +2526,14 @@ done:
 	case L2CAP_MODE_BASIC:
 		if (pi->imtu != L2CAP_DEFAULT_MTU)
 			l2cap_add_conf_opt(&ptr, L2CAP_CONF_MTU, 2, pi->imtu);
+
+		rfc.mode            = L2CAP_MODE_BASIC;
+		rfc.txwin_size      = 0;
+		rfc.max_transmit    = 0;
+		rfc.retrans_timeout = 0;
+		rfc.monitor_timeout = 0;
+		rfc.max_pdu_size    = 0;
+
 		break;
 
 	case L2CAP_MODE_ERTM:
@@ -2440,9 +2546,6 @@ done:
 		if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)
 			rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
 
-		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-					sizeof(rfc), (unsigned long) &rfc);
-
 		if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
 			break;
 
@@ -2463,9 +2566,6 @@ done:
 		if (L2CAP_DEFAULT_MAX_PDU_SIZE > pi->conn->mtu - 10)
 			rfc.max_pdu_size = cpu_to_le16(pi->conn->mtu - 10);
 
-		l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
-					sizeof(rfc), (unsigned long) &rfc);
-
 		if (!(pi->conn->feat_mask & L2CAP_FEAT_FCS))
 			break;
 
@@ -2477,6 +2577,9 @@ done:
 		break;
 	}
 
+	l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC, sizeof(rfc),
+						(unsigned long) &rfc);
+
 	/* FIXME: Need actual value of the flush timeout */
 	//if (flush_to != L2CAP_DEFAULT_FLUSH_TO)
 	//   l2cap_add_conf_opt(&ptr, L2CAP_CONF_FLUSH_TO, 2, pi->flush_to);
@@ -2541,18 +2644,21 @@ static int l2cap_parse_conf_req(struct sock *sk, void *data)
 		}
 	}
 
-	if (pi->num_conf_rsp || pi->num_conf_req)
+	if (pi->num_conf_rsp || pi->num_conf_req > 1)
 		goto done;
 
 	switch (pi->mode) {
 	case L2CAP_MODE_STREAMING:
 	case L2CAP_MODE_ERTM:
-		pi->conf_state |= L2CAP_CONF_STATE2_DEVICE;
-		if (!l2cap_mode_supported(pi->mode, pi->conn->feat_mask))
+		if (!(pi->conf_state & L2CAP_CONF_STATE2_DEVICE)) {
+			pi->mode = l2cap_select_mode(rfc.mode,
+					pi->conn->feat_mask);
+			break;
+		}
+
+		if (pi->mode != rfc.mode)
 			return -ECONNREFUSED;
-		break;
-	default:
-		pi->mode = l2cap_select_mode(rfc.mode, pi->conn->feat_mask);
+
 		break;
 	}
 
@@ -2675,7 +2781,6 @@ static int l2cap_parse_conf_rsp(struct sock *sk, void *rsp, int len, void *data,
 							rfc.mode != pi->mode)
 				return -ECONNREFUSED;
 
-			pi->mode = rfc.mode;
 			pi->fcs = 0;
 
 			l2cap_add_conf_opt(&ptr, L2CAP_CONF_RFC,
@@ -2684,6 +2789,11 @@ static int l2cap_parse_conf_rsp(struct sock *sk, void *rsp, int len, void *data,
 		}
 	}
 
+	if (pi->mode == L2CAP_MODE_BASIC && pi->mode != rfc.mode)
+		return -ECONNREFUSED;
+
+	pi->mode = rfc.mode;
+
 	if (*result == L2CAP_CONF_SUCCESS) {
 		switch (rfc.mode) {
 		case L2CAP_MODE_ERTM:
@@ -2778,7 +2888,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
 	struct l2cap_chan_list *list = &conn->chan_list;
 	struct l2cap_conn_req *req = (struct l2cap_conn_req *) data;
 	struct l2cap_conn_rsp rsp;
-	struct sock *sk, *parent;
+	struct sock *parent, *uninitialized_var(sk);
 	int result, status = L2CAP_CS_NO_INFO;
 
 	u16 dcid = 0, scid = __le16_to_cpu(req->scid);
@@ -2887,6 +2997,15 @@ sendresp:
 					L2CAP_INFO_REQ, sizeof(info), &info);
 	}
 
+	if (!(l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT) &&
+				result == L2CAP_CR_SUCCESS) {
+		u8 buf[128];
+		l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
+					l2cap_build_conf_req(sk, buf), buf);
+		l2cap_pi(sk)->num_conf_req++;
+	}
+
 	return 0;
 }
 
@@ -2907,11 +3026,11 @@ static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hd
 	if (scid) {
 		sk = l2cap_get_chan_by_scid(&conn->chan_list, scid);
 		if (!sk)
-			return 0;
+			return -EFAULT;
 	} else {
 		sk = l2cap_get_chan_by_ident(&conn->chan_list, cmd->ident);
 		if (!sk)
-			return 0;
+			return -EFAULT;
 	}
 
 	switch (result) {
@@ -2919,9 +3038,13 @@ static inline int l2cap_connect_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hd
 		sk->sk_state = BT_CONFIG;
 		l2cap_pi(sk)->ident = 0;
 		l2cap_pi(sk)->dcid = dcid;
-		l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
 		l2cap_pi(sk)->conf_state &= ~L2CAP_CONF_CONNECT_PEND;
 
+		if (l2cap_pi(sk)->conf_state & L2CAP_CONF_REQ_SENT)
+			break;
+
+		l2cap_pi(sk)->conf_state |= L2CAP_CONF_REQ_SENT;
+
 		l2cap_send_cmd(conn, l2cap_get_ident(conn), L2CAP_CONF_REQ,
 					l2cap_build_conf_req(sk, req), req);
 		l2cap_pi(sk)->num_conf_req++;
@@ -2957,8 +3080,14 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 	if (!sk)
 		return -ENOENT;
 
-	if (sk->sk_state == BT_DISCONN)
+	if (sk->sk_state != BT_CONFIG) {
+		struct l2cap_cmd_rej rej;
+
+		rej.reason = cpu_to_le16(0x0002);
+		l2cap_send_cmd(conn, cmd->ident, L2CAP_COMMAND_REJ,
+				sizeof(rej), &rej);
 		goto unlock;
+	}
 
 	/* Reject if config buffer is too small. */
 	len = cmd_len - sizeof(*req);
@@ -2984,7 +3113,7 @@ static inline int l2cap_config_req(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 	/* Complete config. */
 	len = l2cap_parse_conf_req(sk, rsp);
 	if (len < 0) {
-		l2cap_send_disconn_req(conn, sk);
+		l2cap_send_disconn_req(conn, sk, ECONNRESET);
 		goto unlock;
 	}
 
@@ -3054,7 +3183,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 			char req[64];
 
 			if (len > sizeof(req) - sizeof(struct l2cap_conf_req)) {
-				l2cap_send_disconn_req(conn, sk);
+				l2cap_send_disconn_req(conn, sk, ECONNRESET);
 				goto done;
 			}
 
@@ -3063,7 +3192,7 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 			len = l2cap_parse_conf_rsp(sk, rsp->data,
 							len, req, &result);
 			if (len < 0) {
-				l2cap_send_disconn_req(conn, sk);
+				l2cap_send_disconn_req(conn, sk, ECONNRESET);
 				goto done;
 			}
 
@@ -3076,10 +3205,9 @@ static inline int l2cap_config_rsp(struct l2cap_conn *conn, struct l2cap_cmd_hdr
 		}
 
 	default:
-		sk->sk_state = BT_DISCONN;
 		sk->sk_err = ECONNRESET;
 		l2cap_sock_set_timer(sk, HZ * 5);
-		l2cap_send_disconn_req(conn, sk);
+		l2cap_send_disconn_req(conn, sk, ECONNRESET);
 		goto done;
 	}
 
@@ -3130,16 +3258,6 @@ static inline int l2cap_disconnect_req(struct l2cap_conn *conn, struct l2cap_cmd
 
 	sk->sk_shutdown = SHUTDOWN_MASK;
 
-	skb_queue_purge(TX_QUEUE(sk));
-
-	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
-		skb_queue_purge(SREJ_QUEUE(sk));
-		skb_queue_purge(BUSY_QUEUE(sk));
-		del_timer(&l2cap_pi(sk)->retrans_timer);
-		del_timer(&l2cap_pi(sk)->monitor_timer);
-		del_timer(&l2cap_pi(sk)->ack_timer);
-	}
-
 	l2cap_chan_del(sk, ECONNRESET);
 	bh_unlock_sock(sk);
 
@@ -3162,16 +3280,6 @@ static inline int l2cap_disconnect_rsp(struct l2cap_conn *conn, struct l2cap_cmd
 	if (!sk)
 		return 0;
 
-	skb_queue_purge(TX_QUEUE(sk));
-
-	if (l2cap_pi(sk)->mode == L2CAP_MODE_ERTM) {
-		skb_queue_purge(SREJ_QUEUE(sk));
-		skb_queue_purge(BUSY_QUEUE(sk));
-		del_timer(&l2cap_pi(sk)->retrans_timer);
-		del_timer(&l2cap_pi(sk)->monitor_timer);
-		del_timer(&l2cap_pi(sk)->ack_timer);
-	}
-
 	l2cap_chan_del(sk, 0);
 	bh_unlock_sock(sk);
 
@@ -3194,7 +3302,7 @@ static inline int l2cap_information_req(struct l2cap_conn *conn, struct l2cap_cm
 		struct l2cap_info_rsp *rsp = (struct l2cap_info_rsp *) buf;
 		rsp->type   = cpu_to_le16(L2CAP_IT_FEAT_MASK);
 		rsp->result = cpu_to_le16(L2CAP_IR_SUCCESS);
-		if (enable_ertm)
+		if (!disable_ertm)
 			feat_mask |= L2CAP_FEAT_ERTM | L2CAP_FEAT_STREAMING
 							 | L2CAP_FEAT_FCS;
 		put_unaligned_le32(feat_mask, rsp->data);
@@ -3359,7 +3467,7 @@ static int l2cap_check_fcs(struct l2cap_pinfo *pi,  struct sk_buff *skb)
 		our_fcs = crc16(0, skb->data - hdr_size, skb->len + hdr_size);
 
 		if (our_fcs != rcv_fcs)
-			return -EINVAL;
+			return -EBADMSG;
 	}
 	return 0;
 }
@@ -3370,25 +3478,19 @@ static inline void l2cap_send_i_or_rr_or_rnr(struct sock *sk)
 	u16 control = 0;
 
 	pi->frames_sent = 0;
-	pi->conn_state |= L2CAP_CONN_SEND_FBIT;
 
 	control |= pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
 
 	if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) {
-		control |= L2CAP_SUPER_RCV_NOT_READY | L2CAP_CTRL_FINAL;
+		control |= L2CAP_SUPER_RCV_NOT_READY;
 		l2cap_send_sframe(pi, control);
 		pi->conn_state |= L2CAP_CONN_RNR_SENT;
-		pi->conn_state &= ~L2CAP_CONN_SEND_FBIT;
 	}
 
-	if (pi->conn_state & L2CAP_CONN_REMOTE_BUSY && pi->unacked_frames > 0)
-		__mod_retrans_timer();
-
-	pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
+	if (pi->conn_state & L2CAP_CONN_REMOTE_BUSY)
+		l2cap_retransmit_frames(sk);
 
-	spin_lock_bh(&pi->send_lock);
 	l2cap_ertm_send(sk);
-	spin_unlock_bh(&pi->send_lock);
 
 	if (!(pi->conn_state & L2CAP_CONN_LOCAL_BUSY) &&
 			pi->frames_sent == 0) {
@@ -3400,6 +3502,8 @@ static inline void l2cap_send_i_or_rr_or_rnr(struct sock *sk)
 static int l2cap_add_to_srej_queue(struct sock *sk, struct sk_buff *skb, u8 tx_seq, u8 sar)
 {
 	struct sk_buff *next_skb;
+	struct l2cap_pinfo *pi = l2cap_pi(sk);
+	int tx_seq_offset, next_tx_seq_offset;
 
 	bt_cb(skb)->tx_seq = tx_seq;
 	bt_cb(skb)->sar = sar;
@@ -3410,11 +3514,20 @@ static int l2cap_add_to_srej_queue(struct sock *sk, struct sk_buff *skb, u8 tx_s
 		return 0;
 	}
 
+	tx_seq_offset = (tx_seq - pi->buffer_seq) % 64;
+	if (tx_seq_offset < 0)
+		tx_seq_offset += 64;
+
 	do {
 		if (bt_cb(next_skb)->tx_seq == tx_seq)
 			return -EINVAL;
 
-		if (bt_cb(next_skb)->tx_seq > tx_seq) {
+		next_tx_seq_offset = (bt_cb(next_skb)->tx_seq -
+						pi->buffer_seq) % 64;
+		if (next_tx_seq_offset < 0)
+			next_tx_seq_offset += 64;
+
+		if (next_tx_seq_offset > tx_seq_offset) {
 			__skb_queue_before(SREJ_QUEUE(sk), next_skb, skb);
 			return 0;
 		}
@@ -3532,11 +3645,51 @@ drop:
 	pi->sdu = NULL;
 
 disconnect:
-	l2cap_send_disconn_req(pi->conn, sk);
+	l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
 	kfree_skb(skb);
 	return 0;
 }
 
+static int l2cap_try_push_rx_skb(struct sock *sk)
+{
+	struct l2cap_pinfo *pi = l2cap_pi(sk);
+	struct sk_buff *skb;
+	u16 control;
+	int err;
+
+	while ((skb = skb_dequeue(BUSY_QUEUE(sk)))) {
+		control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT;
+		err = l2cap_ertm_reassembly_sdu(sk, skb, control);
+		if (err < 0) {
+			skb_queue_head(BUSY_QUEUE(sk), skb);
+			return -EBUSY;
+		}
+
+		pi->buffer_seq = (pi->buffer_seq + 1) % 64;
+	}
+
+	if (!(pi->conn_state & L2CAP_CONN_RNR_SENT))
+		goto done;
+
+	control = pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
+	control |= L2CAP_SUPER_RCV_READY | L2CAP_CTRL_POLL;
+	l2cap_send_sframe(pi, control);
+	l2cap_pi(sk)->retry_count = 1;
+
+	del_timer(&pi->retrans_timer);
+	__mod_monitor_timer();
+
+	l2cap_pi(sk)->conn_state |= L2CAP_CONN_WAIT_F;
+
+done:
+	pi->conn_state &= ~L2CAP_CONN_LOCAL_BUSY;
+	pi->conn_state &= ~L2CAP_CONN_RNR_SENT;
+
+	BT_DBG("sk %p, Exit local busy", sk);
+
+	return 0;
+}
+
 static void l2cap_busy_work(struct work_struct *work)
 {
 	DECLARE_WAITQUEUE(wait, current);
@@ -3545,7 +3698,6 @@ static void l2cap_busy_work(struct work_struct *work)
 	struct sock *sk = (struct sock *)pi;
 	int n_tries = 0, timeo = HZ/5, err;
 	struct sk_buff *skb;
-	u16 control;
 
 	lock_sock(sk);
 
@@ -3555,8 +3707,8 @@ static void l2cap_busy_work(struct work_struct *work)
 
 		if (n_tries++ > L2CAP_LOCAL_BUSY_TRIES) {
 			err = -EBUSY;
-			l2cap_send_disconn_req(pi->conn, sk);
-			goto done;
+			l2cap_send_disconn_req(pi->conn, sk, EBUSY);
+			break;
 		}
 
 		if (!timeo)
@@ -3564,7 +3716,7 @@ static void l2cap_busy_work(struct work_struct *work)
 
 		if (signal_pending(current)) {
 			err = sock_intr_errno(timeo);
-			goto done;
+			break;
 		}
 
 		release_sock(sk);
@@ -3573,40 +3725,12 @@ static void l2cap_busy_work(struct work_struct *work)
 
 		err = sock_error(sk);
 		if (err)
-			goto done;
-
-		while ((skb = skb_dequeue(BUSY_QUEUE(sk)))) {
-			control = bt_cb(skb)->sar << L2CAP_CTRL_SAR_SHIFT;
-			err = l2cap_ertm_reassembly_sdu(sk, skb, control);
-			if (err < 0) {
-				skb_queue_head(BUSY_QUEUE(sk), skb);
-				break;
-			}
-
-			pi->buffer_seq = (pi->buffer_seq + 1) % 64;
-		}
+			break;
 
-		if (!skb)
+		if (l2cap_try_push_rx_skb(sk) == 0)
 			break;
 	}
 
-	if (!(pi->conn_state & L2CAP_CONN_RNR_SENT))
-		goto done;
-
-	control = pi->buffer_seq << L2CAP_CTRL_REQSEQ_SHIFT;
-	control |= L2CAP_SUPER_RCV_READY | L2CAP_CTRL_POLL;
-	l2cap_send_sframe(pi, control);
-	l2cap_pi(sk)->retry_count = 1;
-
-	del_timer(&pi->retrans_timer);
-	__mod_monitor_timer();
-
-	l2cap_pi(sk)->conn_state |= L2CAP_CONN_WAIT_F;
-
-done:
-	pi->conn_state &= ~L2CAP_CONN_LOCAL_BUSY;
-	pi->conn_state &= ~L2CAP_CONN_RNR_SENT;
-
 	set_current_state(TASK_RUNNING);
 	remove_wait_queue(sk_sleep(sk), &wait);
 
@@ -3621,7 +3745,9 @@ static int l2cap_push_rx_skb(struct sock *sk, struct sk_buff *skb, u16 control)
 	if (pi->conn_state & L2CAP_CONN_LOCAL_BUSY) {
 		bt_cb(skb)->sar = control >> L2CAP_CTRL_SAR_SHIFT;
 		__skb_queue_tail(BUSY_QUEUE(sk), skb);
-		return -EBUSY;
+		return l2cap_try_push_rx_skb(sk);
+
+
 	}
 
 	err = l2cap_ertm_reassembly_sdu(sk, skb, control);
@@ -3631,6 +3757,8 @@ static int l2cap_push_rx_skb(struct sock *sk, struct sk_buff *skb, u16 control)
 	}
 
 	/* Busy Condition */
+	BT_DBG("sk %p, Enter local busy", sk);
+
 	pi->conn_state |= L2CAP_CONN_LOCAL_BUSY;
 	bt_cb(skb)->sar = control >> L2CAP_CTRL_SAR_SHIFT;
 	__skb_queue_tail(BUSY_QUEUE(sk), skb);
@@ -3641,6 +3769,8 @@ static int l2cap_push_rx_skb(struct sock *sk, struct sk_buff *skb, u16 control)
 
 	pi->conn_state |= L2CAP_CONN_RNR_SENT;
 
+	del_timer(&pi->ack_timer);
+
 	queue_work(_busy_wq, &pi->busy_work);
 
 	return err;
@@ -3754,7 +3884,7 @@ static void l2cap_check_srej_gap(struct sock *sk, u8 tx_seq)
 		l2cap_ertm_reassembly_sdu(sk, skb, control);
 		l2cap_pi(sk)->buffer_seq_srej =
 			(l2cap_pi(sk)->buffer_seq_srej + 1) % 64;
-		tx_seq++;
+		tx_seq = (tx_seq + 1) % 64;
 	}
 }
 
@@ -3790,10 +3920,11 @@ static void l2cap_send_srejframe(struct sock *sk, u8 tx_seq)
 		l2cap_send_sframe(pi, control);
 
 		new = kzalloc(sizeof(struct srej_list), GFP_ATOMIC);
-		new->tx_seq = pi->expected_tx_seq++;
+		new->tx_seq = pi->expected_tx_seq;
+		pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64;
 		list_add_tail(&new->list, SREJ_LIST(sk));
 	}
-	pi->expected_tx_seq++;
+	pi->expected_tx_seq = (pi->expected_tx_seq + 1) % 64;
 }
 
 static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, struct sk_buff *skb)
@@ -3802,11 +3933,12 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str
 	u8 tx_seq = __get_txseq(rx_control);
 	u8 req_seq = __get_reqseq(rx_control);
 	u8 sar = rx_control >> L2CAP_CTRL_SAR_SHIFT;
-	u8 tx_seq_offset, expected_tx_seq_offset;
+	int tx_seq_offset, expected_tx_seq_offset;
 	int num_to_ack = (pi->tx_win/6) + 1;
 	int err = 0;
 
-	BT_DBG("sk %p rx_control 0x%4.4x len %d", sk, rx_control, skb->len);
+	BT_DBG("sk %p len %d tx_seq %d rx_control 0x%4.4x", sk, skb->len, tx_seq,
+								rx_control);
 
 	if (L2CAP_CTRL_FINAL & rx_control &&
 			l2cap_pi(sk)->conn_state & L2CAP_CONN_WAIT_F) {
@@ -3828,7 +3960,7 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str
 
 	/* invalid tx_seq */
 	if (tx_seq_offset >= pi->tx_win) {
-		l2cap_send_disconn_req(pi->conn, sk);
+		l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
 		goto drop;
 	}
 
@@ -3851,6 +3983,7 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str
 				pi->buffer_seq = pi->buffer_seq_srej;
 				pi->conn_state &= ~L2CAP_CONN_SREJ_SENT;
 				l2cap_send_ack(pi);
+				BT_DBG("sk %p, Exit SREJ_SENT", sk);
 			}
 		} else {
 			struct srej_list *l;
@@ -3879,6 +4012,8 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str
 
 		pi->conn_state |= L2CAP_CONN_SREJ_SENT;
 
+		BT_DBG("sk %p, Enter SREJ", sk);
+
 		INIT_LIST_HEAD(SREJ_LIST(sk));
 		pi->buffer_seq_srej = pi->buffer_seq;
 
@@ -3889,6 +4024,8 @@ static inline int l2cap_data_channel_iframe(struct sock *sk, u16 rx_control, str
 		pi->conn_state |= L2CAP_CONN_SEND_PBIT;
 
 		l2cap_send_srejframe(sk, tx_seq);
+
+		del_timer(&pi->ack_timer);
 	}
 	return 0;
 
@@ -3902,6 +4039,10 @@ expected:
 		return 0;
 	}
 
+	err = l2cap_push_rx_skb(sk, skb, rx_control);
+	if (err < 0)
+		return 0;
+
 	if (rx_control & L2CAP_CTRL_FINAL) {
 		if (pi->conn_state & L2CAP_CONN_REJ_ACT)
 			pi->conn_state &= ~L2CAP_CONN_REJ_ACT;
@@ -3909,10 +4050,6 @@ expected:
 			l2cap_retransmit_frames(sk);
 	}
 
-	err = l2cap_push_rx_skb(sk, skb, rx_control);
-	if (err < 0)
-		return 0;
-
 	__mod_ack_timer();
 
 	pi->num_acked = (pi->num_acked + 1) % num_to_ack;
@@ -3930,10 +4067,14 @@ static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control)
 {
 	struct l2cap_pinfo *pi = l2cap_pi(sk);
 
+	BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, __get_reqseq(rx_control),
+						rx_control);
+
 	pi->expected_ack_seq = __get_reqseq(rx_control);
 	l2cap_drop_acked_frames(sk);
 
 	if (rx_control & L2CAP_CTRL_POLL) {
+		pi->conn_state |= L2CAP_CONN_SEND_FBIT;
 		if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
 			if ((pi->conn_state & L2CAP_CONN_REMOTE_BUSY) &&
 					(pi->unacked_frames > 0))
@@ -3962,9 +4103,7 @@ static inline void l2cap_data_channel_rrframe(struct sock *sk, u16 rx_control)
 		if (pi->conn_state & L2CAP_CONN_SREJ_SENT) {
 			l2cap_send_ack(pi);
 		} else {
-			spin_lock_bh(&pi->send_lock);
 			l2cap_ertm_send(sk);
-			spin_unlock_bh(&pi->send_lock);
 		}
 	}
 }
@@ -3974,6 +4113,8 @@ static inline void l2cap_data_channel_rejframe(struct sock *sk, u16 rx_control)
 	struct l2cap_pinfo *pi = l2cap_pi(sk);
 	u8 tx_seq = __get_reqseq(rx_control);
 
+	BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control);
+
 	pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
 
 	pi->expected_ack_seq = tx_seq;
@@ -3996,16 +4137,18 @@ static inline void l2cap_data_channel_srejframe(struct sock *sk, u16 rx_control)
 	struct l2cap_pinfo *pi = l2cap_pi(sk);
 	u8 tx_seq = __get_reqseq(rx_control);
 
+	BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control);
+
 	pi->conn_state &= ~L2CAP_CONN_REMOTE_BUSY;
 
 	if (rx_control & L2CAP_CTRL_POLL) {
 		pi->expected_ack_seq = tx_seq;
 		l2cap_drop_acked_frames(sk);
+
+		pi->conn_state |= L2CAP_CONN_SEND_FBIT;
 		l2cap_retransmit_one_frame(sk, tx_seq);
 
-		spin_lock_bh(&pi->send_lock);
 		l2cap_ertm_send(sk);
-		spin_unlock_bh(&pi->send_lock);
 
 		if (pi->conn_state & L2CAP_CONN_WAIT_F) {
 			pi->srej_save_reqseq = tx_seq;
@@ -4031,10 +4174,15 @@ static inline void l2cap_data_channel_rnrframe(struct sock *sk, u16 rx_control)
 	struct l2cap_pinfo *pi = l2cap_pi(sk);
 	u8 tx_seq = __get_reqseq(rx_control);
 
+	BT_DBG("sk %p, req_seq %d ctrl 0x%4.4x", sk, tx_seq, rx_control);
+
 	pi->conn_state |= L2CAP_CONN_REMOTE_BUSY;
 	pi->expected_ack_seq = tx_seq;
 	l2cap_drop_acked_frames(sk);
 
+	if (rx_control & L2CAP_CTRL_POLL)
+		pi->conn_state |= L2CAP_CONN_SEND_FBIT;
+
 	if (!(pi->conn_state & L2CAP_CONN_SREJ_SENT)) {
 		del_timer(&pi->retrans_timer);
 		if (rx_control & L2CAP_CTRL_POLL)
@@ -4082,12 +4230,83 @@ static inline int l2cap_data_channel_sframe(struct sock *sk, u16 rx_control, str
 	return 0;
 }
 
+static int l2cap_ertm_data_rcv(struct sock *sk, struct sk_buff *skb)
+{
+	struct l2cap_pinfo *pi = l2cap_pi(sk);
+	u16 control;
+	u8 req_seq;
+	int len, next_tx_seq_offset, req_seq_offset;
+
+	control = get_unaligned_le16(skb->data);
+	skb_pull(skb, 2);
+	len = skb->len;
+
+	/*
+	 * We can just drop the corrupted I-frame here.
+	 * Receiver will miss it and start proper recovery
+	 * procedures and ask retransmission.
+	 */
+	if (l2cap_check_fcs(pi, skb))
+		goto drop;
+
+	if (__is_sar_start(control) && __is_iframe(control))
+		len -= 2;
+
+	if (pi->fcs == L2CAP_FCS_CRC16)
+		len -= 2;
+
+	if (len > pi->mps) {
+		l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
+		goto drop;
+	}
+
+	req_seq = __get_reqseq(control);
+	req_seq_offset = (req_seq - pi->expected_ack_seq) % 64;
+	if (req_seq_offset < 0)
+		req_seq_offset += 64;
+
+	next_tx_seq_offset =
+		(pi->next_tx_seq - pi->expected_ack_seq) % 64;
+	if (next_tx_seq_offset < 0)
+		next_tx_seq_offset += 64;
+
+	/* check for invalid req-seq */
+	if (req_seq_offset > next_tx_seq_offset) {
+		l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
+		goto drop;
+	}
+
+	if (__is_iframe(control)) {
+		if (len < 0) {
+			l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
+			goto drop;
+		}
+
+		l2cap_data_channel_iframe(sk, control, skb);
+	} else {
+		if (len != 0) {
+			BT_ERR("%d", len);
+			l2cap_send_disconn_req(pi->conn, sk, ECONNRESET);
+			goto drop;
+		}
+
+		l2cap_data_channel_sframe(sk, control, skb);
+	}
+
+	return 0;
+
+drop:
+	kfree_skb(skb);
+	return 0;
+}
+
 static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk_buff *skb)
 {
 	struct sock *sk;
 	struct l2cap_pinfo *pi;
-	u16 control, len;
-	u8 tx_seq, req_seq, next_tx_seq_offset, req_seq_offset;
+	u16 control;
+	u8 tx_seq;
+	int len;
 
 	sk = l2cap_get_chan_by_scid(&conn->chan_list, cid);
 	if (!sk) {
@@ -4117,59 +4336,11 @@ static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk
 		break;
 
 	case L2CAP_MODE_ERTM:
-		control = get_unaligned_le16(skb->data);
-		skb_pull(skb, 2);
-		len = skb->len;
-
-		if (__is_sar_start(control))
-			len -= 2;
-
-		if (pi->fcs == L2CAP_FCS_CRC16)
-			len -= 2;
-
-		/*
-		 * We can just drop the corrupted I-frame here.
-		 * Receiver will miss it and start proper recovery
-		 * procedures and ask retransmission.
-		 */
-		if (len > pi->mps) {
-			l2cap_send_disconn_req(pi->conn, sk);
-			goto drop;
-		}
-
-		if (l2cap_check_fcs(pi, skb))
-			goto drop;
-
-		req_seq = __get_reqseq(control);
-		req_seq_offset = (req_seq - pi->expected_ack_seq) % 64;
-		if (req_seq_offset < 0)
-			req_seq_offset += 64;
-
-		next_tx_seq_offset =
-			(pi->next_tx_seq - pi->expected_ack_seq) % 64;
-		if (next_tx_seq_offset < 0)
-			next_tx_seq_offset += 64;
-
-		/* check for invalid req-seq */
-		if (req_seq_offset > next_tx_seq_offset) {
-			l2cap_send_disconn_req(pi->conn, sk);
-			goto drop;
-		}
-
-		if (__is_iframe(control)) {
-			if (len < 4) {
-				l2cap_send_disconn_req(pi->conn, sk);
-				goto drop;
-			}
-
-			l2cap_data_channel_iframe(sk, control, skb);
+		if (!sock_owned_by_user(sk)) {
+			l2cap_ertm_data_rcv(sk, skb);
 		} else {
-			if (len != 0) {
-				l2cap_send_disconn_req(pi->conn, sk);
+			if (sk_add_backlog(sk, skb))
 				goto drop;
-			}
-
-			l2cap_data_channel_sframe(sk, control, skb);
 		}
 
 		goto done;
@@ -4179,16 +4350,16 @@ static inline int l2cap_data_channel(struct l2cap_conn *conn, u16 cid, struct sk
 		skb_pull(skb, 2);
 		len = skb->len;
 
+		if (l2cap_check_fcs(pi, skb))
+			goto drop;
+
 		if (__is_sar_start(control))
 			len -= 2;
 
 		if (pi->fcs == L2CAP_FCS_CRC16)
 			len -= 2;
 
-		if (len > pi->mps || len < 4 || __is_sframe(control))
-			goto drop;
-
-		if (l2cap_check_fcs(pi, skb))
+		if (len > pi->mps || len < 0 || __is_sframe(control))
 			goto drop;
 
 		tx_seq = __get_txseq(control);
@@ -4288,7 +4459,7 @@ static int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
 	struct hlist_node *node;
 
 	if (type != ACL_LINK)
-		return 0;
+		return -EINVAL;
 
 	BT_DBG("hdev %s, bdaddr %s", hdev->name, batostr(bdaddr));
 
@@ -4321,7 +4492,7 @@ static int l2cap_connect_cfm(struct hci_conn *hcon, u8 status)
 	BT_DBG("hcon %p bdaddr %s status %d", hcon, batostr(&hcon->dst), status);
 
 	if (hcon->type != ACL_LINK)
-		return 0;
+		return -EINVAL;
 
 	if (!status) {
 		conn = l2cap_conn_add(hcon, status);
@@ -4350,7 +4521,7 @@ static int l2cap_disconn_cfm(struct hci_conn *hcon, u8 reason)
 	BT_DBG("hcon %p reason %d", hcon, reason);
 
 	if (hcon->type != ACL_LINK)
-		return 0;
+		return -EINVAL;
 
 	l2cap_conn_del(hcon, bt_err(reason));
 
@@ -4679,14 +4850,8 @@ EXPORT_SYMBOL(l2cap_load);
 module_init(l2cap_init);
 module_exit(l2cap_exit);
 
-module_param(enable_ertm, bool, 0644);
-MODULE_PARM_DESC(enable_ertm, "Enable enhanced retransmission mode");
-
-module_param(max_transmit, uint, 0644);
-MODULE_PARM_DESC(max_transmit, "Max transmit value (default = 3)");
-
-module_param(tx_window, uint, 0644);
-MODULE_PARM_DESC(tx_window, "Transmission window size value (default = 63)");
+module_param(disable_ertm, bool, 0644);
+MODULE_PARM_DESC(disable_ertm, "Disable enhanced retransmission mode");
 
 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
 MODULE_DESCRIPTION("Bluetooth L2CAP ver " VERSION);
diff --git a/net/bluetooth/rfcomm/sock.c b/net/bluetooth/rfcomm/sock.c
index 43fbf6b..44a6232 100644
--- a/net/bluetooth/rfcomm/sock.c
+++ b/net/bluetooth/rfcomm/sock.c
@@ -1152,7 +1152,7 @@ error:
 	return err;
 }
 
-void rfcomm_cleanup_sockets(void)
+void __exit rfcomm_cleanup_sockets(void)
 {
 	debugfs_remove(rfcomm_sock_debugfs);
 
diff --git a/net/bluetooth/rfcomm/tty.c b/net/bluetooth/rfcomm/tty.c
index 309b6c2..026205c 100644
--- a/net/bluetooth/rfcomm/tty.c
+++ b/net/bluetooth/rfcomm/tty.c
@@ -1153,7 +1153,7 @@ static const struct tty_operations rfcomm_ops = {
 	.tiocmset		= rfcomm_tty_tiocmset,
 };
 
-int rfcomm_init_ttys(void)
+int __init rfcomm_init_ttys(void)
 {
 	rfcomm_tty_driver = alloc_tty_driver(RFCOMM_TTY_PORTS);
 	if (!rfcomm_tty_driver)
@@ -1183,7 +1183,7 @@ int rfcomm_init_ttys(void)
 	return 0;
 }
 
-void rfcomm_cleanup_ttys(void)
+void __exit rfcomm_cleanup_ttys(void)
 {
 	tty_unregister_driver(rfcomm_tty_driver);
 	put_tty_driver(rfcomm_tty_driver);
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c
index db4d934..29ac8e1 100644
--- a/net/mac80211/cfg.c
+++ b/net/mac80211/cfg.c
@@ -158,7 +158,7 @@ static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 	if (mac_addr) {
 		sta = sta_info_get_bss(sdata, mac_addr);
 		if (!sta) {
-			ieee80211_key_free(key);
+			ieee80211_key_free(sdata->local, key);
 			err = -ENOENT;
 			goto out_unlock;
 		}
@@ -192,7 +192,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 			goto out_unlock;
 
 		if (sta->key) {
-			ieee80211_key_free(sta->key);
+			ieee80211_key_free(sdata->local, sta->key);
 			WARN_ON(sta->key);
 			ret = 0;
 		}
@@ -205,7 +205,7 @@ static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 		goto out_unlock;
 	}
 
-	ieee80211_key_free(sdata->keys[key_idx]);
+	ieee80211_key_free(sdata->local, sdata->keys[key_idx]);
 	WARN_ON(sdata->keys[key_idx]);
 
 	ret = 0;
@@ -324,15 +324,10 @@ static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 					     struct net_device *dev,
 					     u8 key_idx)
 {
-	struct ieee80211_sub_if_data *sdata;
-
-	rcu_read_lock();
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 
-	sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 	ieee80211_set_default_mgmt_key(sdata, key_idx);
 
-	rcu_read_unlock();
-
 	return 0;
 }
 
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index ef47006..65e0ed6 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -238,6 +238,7 @@ enum ieee80211_work_type {
 	IEEE80211_WORK_ABORT,
 	IEEE80211_WORK_DIRECT_PROBE,
 	IEEE80211_WORK_AUTH,
+	IEEE80211_WORK_ASSOC_BEACON_WAIT,
 	IEEE80211_WORK_ASSOC,
 	IEEE80211_WORK_REMAIN_ON_CHANNEL,
 };
diff --git a/net/mac80211/key.c b/net/mac80211/key.c
index 50d1cff..1b9d87e 100644
--- a/net/mac80211/key.c
+++ b/net/mac80211/key.c
@@ -323,13 +323,15 @@ static void __ieee80211_key_destroy(struct ieee80211_key *key)
 	if (!key)
 		return;
 
-	ieee80211_key_disable_hw_accel(key);
+	if (key->local)
+		ieee80211_key_disable_hw_accel(key);
 
 	if (key->conf.alg == ALG_CCMP)
 		ieee80211_aes_key_free(key->u.ccmp.tfm);
 	if (key->conf.alg == ALG_AES_CMAC)
 		ieee80211_aes_cmac_key_free(key->u.aes_cmac.tfm);
-	ieee80211_debugfs_key_remove(key);
+	if (key->local)
+		ieee80211_debugfs_key_remove(key);
 
 	kfree(key);
 }
@@ -410,15 +412,12 @@ static void __ieee80211_key_free(struct ieee80211_key *key)
 	__ieee80211_key_destroy(key);
 }
 
-void ieee80211_key_free(struct ieee80211_key *key)
+void ieee80211_key_free(struct ieee80211_local *local,
+			struct ieee80211_key *key)
 {
-	struct ieee80211_local *local;
-
 	if (!key)
 		return;
 
-	local = key->sdata->local;
-
 	mutex_lock(&local->key_mtx);
 	__ieee80211_key_free(key);
 	mutex_unlock(&local->key_mtx);
diff --git a/net/mac80211/key.h b/net/mac80211/key.h
index a3849fa..b665bbb 100644
--- a/net/mac80211/key.h
+++ b/net/mac80211/key.h
@@ -135,7 +135,8 @@ struct ieee80211_key *ieee80211_key_alloc(enum ieee80211_key_alg alg,
 void ieee80211_key_link(struct ieee80211_key *key,
 			struct ieee80211_sub_if_data *sdata,
 			struct sta_info *sta);
-void ieee80211_key_free(struct ieee80211_key *key);
+void ieee80211_key_free(struct ieee80211_local *local,
+			struct ieee80211_key *key);
 void ieee80211_set_default_key(struct ieee80211_sub_if_data *sdata, int idx);
 void ieee80211_set_default_mgmt_key(struct ieee80211_sub_if_data *sdata,
 				    int idx);
diff --git a/net/mac80211/main.c b/net/mac80211/main.c
index 0e95c75..7cc4f91 100644
--- a/net/mac80211/main.c
+++ b/net/mac80211/main.c
@@ -107,12 +107,15 @@ int ieee80211_hw_config(struct ieee80211_local *local, u32 changed)
 	if (scan_chan) {
 		chan = scan_chan;
 		channel_type = NL80211_CHAN_NO_HT;
+		local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
 	} else if (local->tmp_channel) {
 		chan = scan_chan = local->tmp_channel;
 		channel_type = local->tmp_channel_type;
+		local->hw.conf.flags |= IEEE80211_CONF_OFFCHANNEL;
 	} else {
 		chan = local->oper_channel;
 		channel_type = local->_oper_channel_type;
+		local->hw.conf.flags &= ~IEEE80211_CONF_OFFCHANNEL;
 	}
 
 	if (chan != local->hw.conf.channel ||
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index cf8d721..b6c163a 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -870,6 +870,11 @@ static void ieee80211_set_associated(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_led_assoc(local, 1);
 
+	if (local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
+		bss_conf->dtim_period = bss->dtim_period;
+	else
+		bss_conf->dtim_period = 0;
+
 	bss_conf->assoc = 1;
 	/*
 	 * For now just always ask the driver to update the basic rateset
@@ -1751,7 +1756,8 @@ void ieee80211_sta_rx_queued_mgmt(struct ieee80211_sub_if_data *sdata,
 			if (wk->sdata != sdata)
 				continue;
 
-			if (wk->type != IEEE80211_WORK_ASSOC)
+			if (wk->type != IEEE80211_WORK_ASSOC &&
+			    wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT)
 				continue;
 
 			if (memcmp(mgmt->bssid, wk->filter_ta, ETH_ALEN))
@@ -2086,6 +2092,8 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
 						  struct sk_buff *skb)
 {
 	struct ieee80211_mgmt *mgmt;
+	struct ieee80211_rx_status *rx_status;
+	struct ieee802_11_elems elems;
 	u16 status;
 
 	if (!skb) {
@@ -2093,6 +2101,19 @@ static enum work_done_result ieee80211_assoc_done(struct ieee80211_work *wk,
 		return WORK_DONE_DESTROY;
 	}
 
+	if (wk->type == IEEE80211_WORK_ASSOC_BEACON_WAIT) {
+		mutex_lock(&wk->sdata->u.mgd.mtx);
+		rx_status = (void *) skb->cb;
+		ieee802_11_parse_elems(skb->data + 24 + 12, skb->len - 24 - 12, &elems);
+		ieee80211_rx_bss_info(wk->sdata, (void *)skb->data, skb->len, rx_status,
+				      &elems, true);
+		mutex_unlock(&wk->sdata->u.mgd.mtx);
+
+		wk->type = IEEE80211_WORK_ASSOC;
+		/* not really done yet */
+		return WORK_DONE_REQUEUE;
+	}
+
 	mgmt = (void *)skb->data;
 	status = le16_to_cpu(mgmt->u.assoc_resp.status_code);
 
@@ -2206,10 +2227,14 @@ int ieee80211_mgd_assoc(struct ieee80211_sub_if_data *sdata,
 	if (req->prev_bssid)
 		memcpy(wk->assoc.prev_bssid, req->prev_bssid, ETH_ALEN);
 
-	wk->type = IEEE80211_WORK_ASSOC;
 	wk->chan = req->bss->channel;
 	wk->sdata = sdata;
 	wk->done = ieee80211_assoc_done;
+	if (!bss->dtim_period &&
+	    sdata->local->hw.flags & IEEE80211_HW_NEED_DTIM_PERIOD)
+		wk->type = IEEE80211_WORK_ASSOC_BEACON_WAIT;
+	else
+		wk->type = IEEE80211_WORK_ASSOC;
 
 	if (req->use_mfp) {
 		ifmgd->mfp = IEEE80211_MFP_REQUIRED;
@@ -2257,7 +2282,8 @@ int ieee80211_mgd_deauth(struct ieee80211_sub_if_data *sdata,
 
 			if (wk->type != IEEE80211_WORK_DIRECT_PROBE &&
 			    wk->type != IEEE80211_WORK_AUTH &&
-			    wk->type != IEEE80211_WORK_ASSOC)
+			    wk->type != IEEE80211_WORK_ASSOC &&
+			    wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT)
 				continue;
 
 			if (memcmp(req->bss->bssid, wk->filter_ta, ETH_ALEN))
diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index f65ce6d..778c604 100644
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -67,7 +67,6 @@ rix_to_ndx(struct minstrel_sta_info *mi, int rix)
 	for (i = rix; i >= 0; i--)
 		if (mi->r[i].rix == rix)
 			break;
-	WARN_ON(i < 0);
 	return i;
 }
 
diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index b5ace24..c5b4659 100644
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -636,7 +636,7 @@ minstrel_ht_update_caps(void *priv, struct ieee80211_supported_band *sband,
 	int i;
 
 	/* fall back to the old minstrel for legacy stations */
-	if (sta && !sta->ht_cap.ht_supported) {
+	if (!sta->ht_cap.ht_supported) {
 		msp->is_ht = false;
 		memset(&msp->legacy, 0, sizeof(msp->legacy));
 		msp->legacy.r = msp->ratelist;
@@ -748,7 +748,7 @@ minstrel_ht_alloc_sta(void *priv, struct ieee80211_sta *sta, gfp_t gfp)
 	return msp;
 
 error1:
-	kfree(msp->sample_table);
+	kfree(msp->ratelist);
 error:
 	kfree(msp);
 	return NULL;
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 439c98d..41f20fb 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -114,6 +114,10 @@ ieee80211_bss_info_update(struct ieee80211_local *local,
 		bss->dtim_period = tim_ie->dtim_period;
 	}
 
+	/* If the beacon had no TIM IE, or it was invalid, use 1 */
+	if (beacon && !bss->dtim_period)
+		bss->dtim_period = 1;
+
 	/* replace old supported rates if we get new values */
 	srlen = 0;
 	if (elems->supp_rates) {
@@ -286,8 +290,6 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
 	local->scanning = 0;
 	local->scan_channel = NULL;
 
-	drv_sw_scan_complete(local);
-
 	/* we only have to protect scan_req and hw/sw scan */
 	mutex_unlock(&local->scan_mtx);
 
@@ -297,6 +299,8 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted)
 
 	ieee80211_configure_filter(local);
 
+	drv_sw_scan_complete(local);
+
 	ieee80211_offchannel_return(local, true);
 
  done:
diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 67656cb..6d86f0c 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -647,7 +647,7 @@ static int __must_check __sta_info_destroy(struct sta_info *sta)
 		return ret;
 
 	if (sta->key) {
-		ieee80211_key_free(sta->key);
+		ieee80211_key_free(local, sta->key);
 		WARN_ON(sta->key);
 	}
 
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 698d471..c54db96 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -576,17 +576,6 @@ ieee80211_tx_h_select_key(struct ieee80211_tx_data *tx)
 }
 
 static ieee80211_tx_result debug_noinline
-ieee80211_tx_h_sta(struct ieee80211_tx_data *tx)
-{
-	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
-
-	if (tx->sta && tx->sta->uploaded)
-		info->control.sta = &tx->sta->sta;
-
-	return TX_CONTINUE;
-}
-
-static ieee80211_tx_result debug_noinline
 ieee80211_tx_h_rate_ctrl(struct ieee80211_tx_data *tx)
 {
 	struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx->skb);
@@ -1307,6 +1296,11 @@ static int __ieee80211_tx(struct ieee80211_local *local,
 			break;
 		}
 
+		if (sta && sta->uploaded)
+			info->control.sta = &sta->sta;
+		else
+			info->control.sta = NULL;
+
 		ret = drv_tx(local, skb);
 		if (WARN_ON(ret != NETDEV_TX_OK && skb->len != len)) {
 			dev_kfree_skb(skb);
@@ -1346,7 +1340,6 @@ static int invoke_tx_handlers(struct ieee80211_tx_data *tx)
 	CALL_TXH(ieee80211_tx_h_check_assoc);
 	CALL_TXH(ieee80211_tx_h_ps_buf);
 	CALL_TXH(ieee80211_tx_h_select_key);
-	CALL_TXH(ieee80211_tx_h_sta);
 	if (!(tx->local->hw.flags & IEEE80211_HW_HAS_RATE_CONTROL))
 		CALL_TXH(ieee80211_tx_h_rate_ctrl);
 
@@ -1942,11 +1935,13 @@ netdev_tx_t ieee80211_subif_start_xmit(struct sk_buff *skb,
 		h_pos += encaps_len;
 	}
 
+#ifdef CONFIG_MAC80211_MESH
 	if (meshhdrlen > 0) {
 		memcpy(skb_push(skb, meshhdrlen), &mesh_hdr, meshhdrlen);
 		nh_pos += meshhdrlen;
 		h_pos += meshhdrlen;
 	}
+#endif
 
 	if (ieee80211_is_data_qos(fc)) {
 		__le16 *qos_control;
diff --git a/net/mac80211/util.c b/net/mac80211/util.c
index 7947921..748387d 100644
--- a/net/mac80211/util.c
+++ b/net/mac80211/util.c
@@ -803,8 +803,12 @@ void ieee80211_set_wmm_default(struct ieee80211_sub_if_data *sdata)
 
 	/* after reinitialize QoS TX queues setting to default,
 	 * disable QoS at all */
-	sdata->vif.bss_conf.qos = sdata->vif.type != NL80211_IFTYPE_STATION;
-	ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
+
+	if (sdata->vif.type != NL80211_IFTYPE_MONITOR) {
+		sdata->vif.bss_conf.qos =
+			sdata->vif.type != NL80211_IFTYPE_STATION;
+		ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
+	}
 }
 
 void ieee80211_sta_def_wmm_params(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/work.c b/net/mac80211/work.c
index c22a71c..81d4ad6 100644
--- a/net/mac80211/work.c
+++ b/net/mac80211/work.c
@@ -560,6 +560,22 @@ ieee80211_remain_on_channel_timeout(struct ieee80211_work *wk)
 	return WORK_ACT_TIMEOUT;
 }
 
+static enum work_action __must_check
+ieee80211_assoc_beacon_wait(struct ieee80211_work *wk)
+{
+	if (wk->started)
+		return WORK_ACT_TIMEOUT;
+
+	/*
+	 * Wait up to one beacon interval ...
+	 * should this be more if we miss one?
+	 */
+	printk(KERN_DEBUG "%s: waiting for beacon from %pM\n",
+	       wk->sdata->name, wk->filter_ta);
+	wk->timeout = TU_TO_EXP_TIME(wk->assoc.bss->beacon_interval);
+	return WORK_ACT_NONE;
+}
+
 static void ieee80211_auth_challenge(struct ieee80211_work *wk,
 				     struct ieee80211_mgmt *mgmt,
 				     size_t len)
@@ -709,6 +725,25 @@ ieee80211_rx_mgmt_probe_resp(struct ieee80211_work *wk,
 	return WORK_ACT_DONE;
 }
 
+static enum work_action __must_check
+ieee80211_rx_mgmt_beacon(struct ieee80211_work *wk,
+			 struct ieee80211_mgmt *mgmt, size_t len)
+{
+	struct ieee80211_sub_if_data *sdata = wk->sdata;
+	struct ieee80211_local *local = sdata->local;
+
+	ASSERT_WORK_MTX(local);
+
+	if (wk->type != IEEE80211_WORK_ASSOC_BEACON_WAIT)
+		return WORK_ACT_MISMATCH;
+
+	if (len < 24 + 12)
+		return WORK_ACT_NONE;
+
+	printk(KERN_DEBUG "%s: beacon received\n", sdata->name);
+	return WORK_ACT_DONE;
+}
+
 static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
 					  struct sk_buff *skb)
 {
@@ -731,6 +766,7 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
 		case IEEE80211_WORK_DIRECT_PROBE:
 		case IEEE80211_WORK_AUTH:
 		case IEEE80211_WORK_ASSOC:
+		case IEEE80211_WORK_ASSOC_BEACON_WAIT:
 			bssid = wk->filter_ta;
 			break;
 		default:
@@ -745,6 +781,9 @@ static void ieee80211_work_rx_queued_mgmt(struct ieee80211_local *local,
 			continue;
 
 		switch (fc & IEEE80211_FCTL_STYPE) {
+		case IEEE80211_STYPE_BEACON:
+			rma = ieee80211_rx_mgmt_beacon(wk, mgmt, skb->len);
+			break;
 		case IEEE80211_STYPE_PROBE_RESP:
 			rma = ieee80211_rx_mgmt_probe_resp(wk, mgmt, skb->len,
 							   rx_status);
@@ -916,6 +955,9 @@ static void ieee80211_work_work(struct work_struct *work)
 		case IEEE80211_WORK_REMAIN_ON_CHANNEL:
 			rma = ieee80211_remain_on_channel_timeout(wk);
 			break;
+		case IEEE80211_WORK_ASSOC_BEACON_WAIT:
+			rma = ieee80211_assoc_beacon_wait(wk);
+			break;
 		}
 
 		wk->started = started;
@@ -1065,6 +1107,7 @@ ieee80211_rx_result ieee80211_work_rx_mgmt(struct ieee80211_sub_if_data *sdata,
 		case IEEE80211_STYPE_PROBE_RESP:
 		case IEEE80211_STYPE_ASSOC_RESP:
 		case IEEE80211_STYPE_REASSOC_RESP:
+		case IEEE80211_STYPE_BEACON:
 			skb_queue_tail(&local->work_skb_queue, skb);
 			ieee80211_queue_work(&local->hw, &local->work_work);
 			return RX_QUEUED;
diff --git a/net/wireless/core.c b/net/wireless/core.c
index f65c649..541e2ff 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -907,3 +907,52 @@ static void __exit cfg80211_exit(void)
 	destroy_workqueue(cfg80211_wq);
 }
 module_exit(cfg80211_exit);
+
+static int ___wiphy_printk(const char *level, const struct wiphy *wiphy,
+			   struct va_format *vaf)
+{
+	if (!wiphy)
+		return printk("%s(NULL wiphy *): %pV", level, vaf);
+
+	return printk("%s%s: %pV", level, wiphy_name(wiphy), vaf);
+}
+
+int __wiphy_printk(const char *level, const struct wiphy *wiphy,
+		   const char *fmt, ...)
+{
+	struct va_format vaf;
+	va_list args;
+	int r;
+
+	va_start(args, fmt);
+
+	vaf.fmt = fmt;
+	vaf.va = &args;
+
+	r = ___wiphy_printk(level, wiphy, &vaf);
+	va_end(args);
+
+	return r;
+}
+EXPORT_SYMBOL(__wiphy_printk);
+
+#define define_wiphy_printk_level(func, kern_level)		\
+int func(const struct wiphy *wiphy, const char *fmt, ...)	\
+{								\
+	struct va_format vaf;					\
+	va_list args;						\
+	int r;							\
+								\
+	va_start(args, fmt);					\
+								\
+	vaf.fmt = fmt;						\
+	vaf.va = &args;						\
+								\
+	r = ___wiphy_printk(kern_level, wiphy, &vaf);		\
+	va_end(args);						\
+								\
+	return r;						\
+}								\
+EXPORT_SYMBOL(func);
+
+define_wiphy_printk_level(wiphy_debug, KERN_DEBUG);
diff --git a/net/wireless/ibss.c b/net/wireless/ibss.c
index adcabba..27a8ce9 100644
--- a/net/wireless/ibss.c
+++ b/net/wireless/ibss.c
@@ -247,8 +247,10 @@ int cfg80211_ibss_wext_join(struct cfg80211_registered_device *rdev,
 	if (!netif_running(wdev->netdev))
 		return 0;
 
-	if (wdev->wext.keys)
+	if (wdev->wext.keys) {
 		wdev->wext.keys->def = wdev->wext.default_key;
+		wdev->wext.keys->defmgmt = wdev->wext.default_mgmt_key;
+	}
 
 	wdev->wext.ibss.privacy = wdev->wext.default_key != -1;
 
diff --git a/net/wireless/lib80211_crypt_ccmp.c b/net/wireless/lib80211_crypt_ccmp.c
index b7fa31d..dacb3b4 100644
--- a/net/wireless/lib80211_crypt_ccmp.c
+++ b/net/wireless/lib80211_crypt_ccmp.c
@@ -467,7 +467,6 @@ static struct lib80211_crypto_ops lib80211_crypt_ccmp = {
 	.name = "CCMP",
 	.init = lib80211_ccmp_init,
 	.deinit = lib80211_ccmp_deinit,
-	.build_iv = lib80211_ccmp_hdr,
 	.encrypt_mpdu = lib80211_ccmp_encrypt,
 	.decrypt_mpdu = lib80211_ccmp_decrypt,
 	.encrypt_msdu = NULL,
diff --git a/net/wireless/lib80211_crypt_tkip.c b/net/wireless/lib80211_crypt_tkip.c
index a7f9956..0fe4051 100644
--- a/net/wireless/lib80211_crypt_tkip.c
+++ b/net/wireless/lib80211_crypt_tkip.c
@@ -757,7 +757,6 @@ static struct lib80211_crypto_ops lib80211_crypt_tkip = {
 	.name = "TKIP",
 	.init = lib80211_tkip_init,
 	.deinit = lib80211_tkip_deinit,
-	.build_iv = lib80211_tkip_hdr,
 	.encrypt_mpdu = lib80211_tkip_encrypt,
 	.decrypt_mpdu = lib80211_tkip_decrypt,
 	.encrypt_msdu = lib80211_michael_mic_add,
diff --git a/net/wireless/lib80211_crypt_wep.c b/net/wireless/lib80211_crypt_wep.c
index 6d41e05..e2e8887 100644
--- a/net/wireless/lib80211_crypt_wep.c
+++ b/net/wireless/lib80211_crypt_wep.c
@@ -269,7 +269,6 @@ static struct lib80211_crypto_ops lib80211_crypt_wep = {
 	.name = "WEP",
 	.init = lib80211_wep_init,
 	.deinit = lib80211_wep_deinit,
-	.build_iv = lib80211_wep_build_iv,
 	.encrypt_mpdu = lib80211_wep_encrypt,
 	.decrypt_mpdu = lib80211_wep_decrypt,
 	.encrypt_msdu = NULL,
diff --git a/net/wireless/nl80211.c b/net/wireless/nl80211.c
index fbfac58..37902a5 100644
--- a/net/wireless/nl80211.c
+++ b/net/wireless/nl80211.c
@@ -2769,6 +2769,7 @@ static int nl80211_get_mesh_params(struct sk_buff *skb,
 
  nla_put_failure:
 	genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
 	err = -EMSGSIZE;
  out:
 	/* Cleanup */
@@ -2960,6 +2961,7 @@ static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info)
 
 nla_put_failure:
 	genlmsg_cancel(msg, hdr);
+	nlmsg_free(msg);
 	err = -EMSGSIZE;
 out:
 	mutex_unlock(&cfg80211_mutex);
diff --git a/net/wireless/reg.c b/net/wireless/reg.c
index 48baf28..f180db0 100644
--- a/net/wireless/reg.c
+++ b/net/wireless/reg.c
@@ -1306,6 +1306,7 @@ static void reg_process_hint(struct regulatory_request *reg_request)
 {
 	int r = 0;
 	struct wiphy *wiphy = NULL;
+	enum nl80211_reg_initiator initiator = reg_request->initiator;
 
 	BUG_ON(!reg_request->alpha2);
 
@@ -1325,7 +1326,7 @@ static void reg_process_hint(struct regulatory_request *reg_request)
 	/* This is required so that the orig_* parameters are saved */
 	if (r == -EALREADY && wiphy &&
 	    wiphy->flags & WIPHY_FLAG_STRICT_REGULATORY)
-		wiphy_update_regulatory(wiphy, reg_request->initiator);
+		wiphy_update_regulatory(wiphy, initiator);
 out:
 	mutex_unlock(&reg_mutex);
 	mutex_unlock(&cfg80211_mutex);
@@ -1492,7 +1493,6 @@ void regulatory_hint_11d(struct wiphy *wiphy,
 			 u8 *country_ie,
 			 u8 country_ie_len)
 {
-	struct ieee80211_regdomain *rd = NULL;
 	char alpha2[2];
 	enum environment_cap env = ENVIRON_ANY;
 	struct regulatory_request *request;
@@ -1529,7 +1529,7 @@ void regulatory_hint_11d(struct wiphy *wiphy,
 
 	request = kzalloc(sizeof(struct regulatory_request), GFP_KERNEL);
 	if (!request)
-		goto free_rd_out;
+		goto out;
 
 	request->wiphy_idx = get_wiphy_idx(wiphy);
 	request->alpha2[0] = alpha2[0];
@@ -1543,8 +1543,6 @@ void regulatory_hint_11d(struct wiphy *wiphy,
 
 	return;
 
-free_rd_out:
-	kfree(rd);
 out:
 	mutex_unlock(&reg_mutex);
 }