From 9e4425fff9e0a0fb6a8c705777ed861f991f8747 Mon Sep 17 00:00:00 2001
From: "Gustavo F. Padovan" <padovan@profusion.mobi>
Date: Mon, 18 Apr 2011 18:38:43 -0300
Subject: Bluetooth: Add l2cap_add_psm() and l2cap_add_scid()

The intention is to get rid of the l2cap_sk_list usage inside
l2cap_core.c. l2cap_sk_list will soon be replaced by a list that does not
depend on socket usage.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
---
 net/bluetooth/l2cap_core.c | 44 ++++++++++++++++++++++++++++++++++++++++++++
 net/bluetooth/l2cap_sock.c | 44 +++++++++++---------------------------------
 2 files changed, 55 insertions(+), 33 deletions(-)

(limited to 'net/bluetooth')

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 338d8c3eeda..98ddd867cfd 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -135,6 +135,50 @@ static inline struct l2cap_chan *l2cap_get_chan_by_ident(struct l2cap_conn *conn
 	return c;
 }
 
+struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
+{
+	struct sock *sk;
+	struct hlist_node *node;
+	sk_for_each(sk, node, &l2cap_sk_list.head) {
+		struct l2cap_chan *chan = l2cap_pi(sk)->chan;
+
+		if (chan->sport == psm && !bacmp(&bt_sk(sk)->src, src))
+			goto found;
+	}
+
+	sk = NULL;
+found:
+	return sk;
+}
+
+int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm)
+{
+	write_lock_bh(&l2cap_sk_list.lock);
+
+	if (__l2cap_get_sock_by_addr(psm, src)) {
+		write_unlock_bh(&l2cap_sk_list.lock);
+		return -EADDRINUSE;
+	}
+
+	chan->psm = psm;
+	chan->sport = psm;
+
+	write_unlock_bh(&l2cap_sk_list.lock);
+
+	return 0;
+}
+
+int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid)
+{
+	write_lock_bh(&l2cap_sk_list.lock);
+
+	chan->scid = scid;
+
+	write_unlock_bh(&l2cap_sk_list.lock);
+
+	return 0;
+}
+
 static u16 l2cap_alloc_cid(struct l2cap_conn *conn)
 {
 	u16 cid = L2CAP_CID_DYN_START;
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 09cc7a00534..2156dcecec0 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -78,22 +78,6 @@ void l2cap_sock_clear_timer(struct sock *sk)
 	sk_stop_timer(sk, &sk->sk_timer);
 }
 
-static struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
-{
-	struct sock *sk;
-	struct hlist_node *node;
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		struct l2cap_chan *chan = l2cap_pi(sk)->chan;
-
-		if (chan->sport == psm && !bacmp(&bt_sk(sk)->src, src))
-			goto found;
-	}
-
-	sk = NULL;
-found:
-	return sk;
-}
-
 static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
 {
 	struct sock *sk = sock->sk;
@@ -136,26 +120,20 @@ static int l2cap_sock_bind(struct socket *sock, struct sockaddr *addr, int alen)
 		}
 	}
 
-	write_lock_bh(&l2cap_sk_list.lock);
+	if (la.l2_cid)
+		err = l2cap_add_scid(chan, la.l2_cid);
+	else
+		err = l2cap_add_psm(chan, &la.l2_bdaddr, la.l2_psm);
 
-	if (la.l2_psm && __l2cap_get_sock_by_addr(la.l2_psm, &la.l2_bdaddr)) {
-		err = -EADDRINUSE;
-	} else {
-		/* Save source address */
-		bacpy(&bt_sk(sk)->src, &la.l2_bdaddr);
-		chan->psm   = la.l2_psm;
-		chan->sport = la.l2_psm;
-		sk->sk_state = BT_BOUND;
-
-		if (__le16_to_cpu(la.l2_psm) == 0x0001 ||
-					__le16_to_cpu(la.l2_psm) == 0x0003)
-			chan->sec_level = BT_SECURITY_SDP;
-	}
+	if (err < 0)
+		goto done;
 
-	if (la.l2_cid)
-		chan->scid = la.l2_cid;
+	if (__le16_to_cpu(la.l2_psm) == 0x0001 ||
+				__le16_to_cpu(la.l2_psm) == 0x0003)
+		chan->sec_level = BT_SECURITY_SDP;
 
-	write_unlock_bh(&l2cap_sk_list.lock);
+	bacpy(&bt_sk(sk)->src, &la.l2_bdaddr);
+	sk->sk_state = BT_BOUND;
 
 done:
 	release_sock(sk);
-- 
cgit v1.2.3


From 73b2ec18532f45e9028ce4c7bc8d7f8818eabd2a Mon Sep 17 00:00:00 2001
From: "Gustavo F. Padovan" <padovan@profusion.mobi>
Date: Mon, 18 Apr 2011 19:36:44 -0300
Subject: Bluetooth: Handle psm == 0 case inside l2cap_add_psm()

When the user doesn't specify a psm we have the choose one for the
channel. Now we do this inside l2cap_add_psm().

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
---
 include/net/bluetooth/l2cap.h |  1 -
 net/bluetooth/l2cap_core.c    | 32 ++++++++++++++++++++++++--------
 net/bluetooth/l2cap_sock.c    | 22 ----------------------
 3 files changed, 24 insertions(+), 31 deletions(-)

(limited to 'net/bluetooth')

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index f5f3c2cf8a3..fb3f90eaaaa 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -458,7 +458,6 @@ void l2cap_do_send(struct l2cap_chan *chan, struct sk_buff *skb);
 void l2cap_streaming_send(struct l2cap_chan *chan);
 int l2cap_ertm_send(struct l2cap_chan *chan);
 
-struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src);
 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm);
 int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid);
 
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 98ddd867cfd..9e3f64f05d4 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -135,7 +135,7 @@ static inline struct l2cap_chan *l2cap_get_chan_by_ident(struct l2cap_conn *conn
 	return c;
 }
 
-struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
+static struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
 {
 	struct sock *sk;
 	struct hlist_node *node;
@@ -153,19 +153,35 @@ found:
 
 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm)
 {
+	int err;
+
 	write_lock_bh(&l2cap_sk_list.lock);
 
-	if (__l2cap_get_sock_by_addr(psm, src)) {
-		write_unlock_bh(&l2cap_sk_list.lock);
-		return -EADDRINUSE;
+	if (psm && __l2cap_get_sock_by_addr(psm, src)) {
+		err = -EADDRINUSE;
+		goto done;
 	}
 
-	chan->psm = psm;
-	chan->sport = psm;
+	if (psm) {
+		chan->psm = psm;
+		chan->sport = psm;
+		err = 0;
+	} else {
+		u16 p;
 
-	write_unlock_bh(&l2cap_sk_list.lock);
+		err = -EINVAL;
+		for (p = 0x1001; p < 0x1100; p += 2)
+			if (!__l2cap_get_sock_by_addr(cpu_to_le16(p), src)) {
+				chan->psm   = cpu_to_le16(p);
+				chan->sport = cpu_to_le16(p);
+				err = 0;
+				break;
+			}
+	}
 
-	return 0;
+done:
+	write_unlock_bh(&l2cap_sk_list.lock);
+	return err;
 }
 
 int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid)
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index 2156dcecec0..aca99cd5377 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -256,28 +256,6 @@ static int l2cap_sock_listen(struct socket *sock, int backlog)
 		goto done;
 	}
 
-	if (!chan->psm && !chan->scid) {
-		bdaddr_t *src = &bt_sk(sk)->src;
-		u16 psm;
-
-		err = -EINVAL;
-
-		write_lock_bh(&l2cap_sk_list.lock);
-
-		for (psm = 0x1001; psm < 0x1100; psm += 2)
-			if (!__l2cap_get_sock_by_addr(cpu_to_le16(psm), src)) {
-				chan->psm   = cpu_to_le16(psm);
-				chan->sport = cpu_to_le16(psm);
-				err = 0;
-				break;
-			}
-
-		write_unlock_bh(&l2cap_sk_list.lock);
-
-		if (err < 0)
-			goto done;
-	}
-
 	sk->sk_max_ack_backlog = backlog;
 	sk->sk_ack_backlog = 0;
 	sk->sk_state = BT_LISTEN;
-- 
cgit v1.2.3


From 23691d75cdc69c3b285211b4d77746aa20a17d18 Mon Sep 17 00:00:00 2001
From: "Gustavo F. Padovan" <padovan@profusion.mobi>
Date: Wed, 27 Apr 2011 18:26:32 -0300
Subject: Bluetooth: Remove l2cap_sk_list

A new list was added to replace the socket based one. This new list
doesn't depent on sock and then fits better inside l2cap_core.c code.

It also rename l2cap_chan_alloc() to l2cap_chan_create() and
l2cap_chan_free() to l2cap_chan_destroy)

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
---
 include/net/bluetooth/l2cap.h |   6 +-
 net/bluetooth/l2cap_core.c    | 165 +++++++++++++++++++++++-------------------
 net/bluetooth/l2cap_sock.c    |   6 +-
 3 files changed, 95 insertions(+), 82 deletions(-)

(limited to 'net/bluetooth')

diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index fb3f90eaaaa..d09c9b1118e 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -350,6 +350,7 @@ struct l2cap_chan {
 	struct list_head	srej_l;
 
 	struct list_head list;
+	struct list_head global_l;
 };
 
 struct l2cap_conn {
@@ -441,7 +442,6 @@ static inline int l2cap_tx_window_full(struct l2cap_chan *ch)
 #define __is_sar_start(ctrl)	(((ctrl) & L2CAP_CTRL_SAR) == L2CAP_SDU_START)
 
 extern int disable_ertm;
-extern struct bt_sock_list l2cap_sk_list;
 
 int l2cap_init_sockets(void);
 void l2cap_cleanup_sockets(void);
@@ -469,9 +469,9 @@ void l2cap_sock_init(struct sock *sk, struct sock *parent);
 struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock,
 							int proto, gfp_t prio);
 void l2cap_send_disconn_req(struct l2cap_conn *conn, struct l2cap_chan *chan, int err);
-struct l2cap_chan *l2cap_chan_alloc(struct sock *sk);
+struct l2cap_chan *l2cap_chan_create(struct sock *sk);
 void l2cap_chan_del(struct l2cap_chan *chan, int err);
-void l2cap_chan_free(struct l2cap_chan *chan);
+void l2cap_chan_destroy(struct l2cap_chan *chan);
 int l2cap_chan_connect(struct l2cap_chan *chan);
 
 #endif /* __L2CAP_H */
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 9e3f64f05d4..d0769a83cb5 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -62,9 +62,8 @@ static u8 l2cap_fixed_chan[8] = { 0x02, };
 
 static struct workqueue_struct *_busy_wq;
 
-struct bt_sock_list l2cap_sk_list = {
-	.lock = __RW_LOCK_UNLOCKED(l2cap_sk_list.lock)
-};
+LIST_HEAD(chan_list);
+DEFINE_RWLOCK(chan_list_lock);
 
 static void l2cap_busy_work(struct work_struct *work);
 
@@ -135,29 +134,27 @@ static inline struct l2cap_chan *l2cap_get_chan_by_ident(struct l2cap_conn *conn
 	return c;
 }
 
-static struct sock *__l2cap_get_sock_by_addr(__le16 psm, bdaddr_t *src)
+static struct l2cap_chan *__l2cap_global_chan_by_addr(__le16 psm, bdaddr_t *src)
 {
-	struct sock *sk;
-	struct hlist_node *node;
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		struct l2cap_chan *chan = l2cap_pi(sk)->chan;
+	struct l2cap_chan *c;
 
-		if (chan->sport == psm && !bacmp(&bt_sk(sk)->src, src))
+	list_for_each_entry(c, &chan_list, global_l) {
+		if (c->sport == psm && !bacmp(&bt_sk(c->sk)->src, src))
 			goto found;
 	}
 
-	sk = NULL;
+	c = NULL;
 found:
-	return sk;
+	return c;
 }
 
 int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm)
 {
 	int err;
 
-	write_lock_bh(&l2cap_sk_list.lock);
+	write_lock_bh(&chan_list_lock);
 
-	if (psm && __l2cap_get_sock_by_addr(psm, src)) {
+	if (psm && __l2cap_global_chan_by_addr(psm, src)) {
 		err = -EADDRINUSE;
 		goto done;
 	}
@@ -171,7 +168,7 @@ int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm)
 
 		err = -EINVAL;
 		for (p = 0x1001; p < 0x1100; p += 2)
-			if (!__l2cap_get_sock_by_addr(cpu_to_le16(p), src)) {
+			if (!__l2cap_global_chan_by_addr(cpu_to_le16(p), src)) {
 				chan->psm   = cpu_to_le16(p);
 				chan->sport = cpu_to_le16(p);
 				err = 0;
@@ -180,17 +177,17 @@ int l2cap_add_psm(struct l2cap_chan *chan, bdaddr_t *src, __le16 psm)
 	}
 
 done:
-	write_unlock_bh(&l2cap_sk_list.lock);
+	write_unlock_bh(&chan_list_lock);
 	return err;
 }
 
 int l2cap_add_scid(struct l2cap_chan *chan,  __u16 scid)
 {
-	write_lock_bh(&l2cap_sk_list.lock);
+	write_lock_bh(&chan_list_lock);
 
 	chan->scid = scid;
 
-	write_unlock_bh(&l2cap_sk_list.lock);
+	write_unlock_bh(&chan_list_lock);
 
 	return 0;
 }
@@ -207,7 +204,7 @@ static u16 l2cap_alloc_cid(struct l2cap_conn *conn)
 	return 0;
 }
 
-struct l2cap_chan *l2cap_chan_alloc(struct sock *sk)
+struct l2cap_chan *l2cap_chan_create(struct sock *sk)
 {
 	struct l2cap_chan *chan;
 
@@ -217,11 +214,19 @@ struct l2cap_chan *l2cap_chan_alloc(struct sock *sk)
 
 	chan->sk = sk;
 
+	write_lock_bh(&chan_list_lock);
+	list_add(&chan->global_l, &chan_list);
+	write_unlock_bh(&chan_list_lock);
+
 	return chan;
 }
 
-void l2cap_chan_free(struct l2cap_chan *chan)
+void l2cap_chan_destroy(struct l2cap_chan *chan)
 {
+	write_lock_bh(&chan_list_lock);
+	list_del(&chan->global_l);
+	write_unlock_bh(&chan_list_lock);
+
 	kfree(chan);
 }
 
@@ -651,48 +656,51 @@ static void l2cap_conn_start(struct l2cap_conn *conn)
 /* Find socket with cid and source bdaddr.
  * Returns closest match, locked.
  */
-static struct sock *l2cap_get_sock_by_scid(int state, __le16 cid, bdaddr_t *src)
+static struct l2cap_chan *l2cap_global_chan_by_scid(int state, __le16 cid, bdaddr_t *src)
 {
-	struct sock *sk = NULL, *sk1 = NULL;
-	struct hlist_node *node;
+	struct l2cap_chan *c, *c1 = NULL;
 
-	read_lock(&l2cap_sk_list.lock);
+	read_lock(&chan_list_lock);
 
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		struct l2cap_chan *chan = l2cap_pi(sk)->chan;
+	list_for_each_entry(c, &chan_list, global_l) {
+		struct sock *sk = c->sk;
 
 		if (state && sk->sk_state != state)
 			continue;
 
-		if (chan->scid == cid) {
+		if (c->scid == cid) {
 			/* Exact match. */
-			if (!bacmp(&bt_sk(sk)->src, src))
-				break;
+			if (!bacmp(&bt_sk(sk)->src, src)) {
+				read_unlock(&chan_list_lock);
+				return c;
+			}
 
 			/* Closest match */
 			if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY))
-				sk1 = sk;
+				c1 = c;
 		}
 	}
 
-	read_unlock(&l2cap_sk_list.lock);
+	read_unlock(&chan_list_lock);
 
-	return node ? sk : sk1;
+	return c1;
 }
 
 static void l2cap_le_conn_ready(struct l2cap_conn *conn)
 {
 	struct sock *parent, *sk;
-	struct l2cap_chan *chan;
+	struct l2cap_chan *chan, *pchan;
 
 	BT_DBG("");
 
 	/* Check if we have socket listening on cid */
-	parent = l2cap_get_sock_by_scid(BT_LISTEN, L2CAP_CID_LE_DATA,
+	pchan = l2cap_global_chan_by_scid(BT_LISTEN, L2CAP_CID_LE_DATA,
 							conn->src);
-	if (!parent)
+	if (!pchan)
 		return;
 
+	parent = pchan->sk;
+
 	bh_lock_sock(parent);
 
 	/* Check for backlog size */
@@ -705,7 +713,7 @@ static void l2cap_le_conn_ready(struct l2cap_conn *conn)
 	if (!sk)
 		goto clean;
 
-	chan = l2cap_chan_alloc(sk);
+	chan = l2cap_chan_create(sk);
 	if (!chan) {
 		l2cap_sock_kill(sk);
 		goto clean;
@@ -883,33 +891,34 @@ static inline void l2cap_chan_add(struct l2cap_conn *conn, struct l2cap_chan *ch
 /* Find socket with psm and source bdaddr.
  * Returns closest match.
  */
-static struct sock *l2cap_get_sock_by_psm(int state, __le16 psm, bdaddr_t *src)
+static struct l2cap_chan *l2cap_global_chan_by_psm(int state, __le16 psm, bdaddr_t *src)
 {
-	struct sock *sk = NULL, *sk1 = NULL;
-	struct hlist_node *node;
+	struct l2cap_chan *c, *c1 = NULL;
 
-	read_lock(&l2cap_sk_list.lock);
+	read_lock(&chan_list_lock);
 
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		struct l2cap_chan *chan = l2cap_pi(sk)->chan;
+	list_for_each_entry(c, &chan_list, global_l) {
+		struct sock *sk = c->sk;
 
 		if (state && sk->sk_state != state)
 			continue;
 
-		if (chan->psm == psm) {
+		if (c->psm == psm) {
 			/* Exact match. */
-			if (!bacmp(&bt_sk(sk)->src, src))
-				break;
+			if (!bacmp(&bt_sk(sk)->src, src)) {
+				read_unlock_bh(&chan_list_lock);
+				return c;
+			}
 
 			/* Closest match */
 			if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY))
-				sk1 = sk;
+				c1 = c;
 		}
 	}
 
-	read_unlock(&l2cap_sk_list.lock);
+	read_unlock(&chan_list_lock);
 
-	return node ? sk : sk1;
+	return c1;
 }
 
 int l2cap_chan_connect(struct l2cap_chan *chan)
@@ -2079,22 +2088,26 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
 {
 	struct l2cap_conn_req *req = (struct l2cap_conn_req *) data;
 	struct l2cap_conn_rsp rsp;
-	struct l2cap_chan *chan = NULL;
+	struct l2cap_chan *chan = NULL, *pchan;
 	struct sock *parent, *sk = NULL;
 	int result, status = L2CAP_CS_NO_INFO;
 
 	u16 dcid = 0, scid = __le16_to_cpu(req->scid);
 	__le16 psm = req->psm;
 
-	BT_DBG("psm 0x%2.2x scid 0x%4.4x", psm, scid);
+	BT_ERR("psm 0x%2.2x scid 0x%4.4x", psm, scid);
 
 	/* Check if we have socket listening on psm */
-	parent = l2cap_get_sock_by_psm(BT_LISTEN, psm, conn->src);
-	if (!parent) {
+	pchan = l2cap_global_chan_by_psm(BT_LISTEN, psm, conn->src);
+	if (!pchan) {
 		result = L2CAP_CR_BAD_PSM;
 		goto sendresp;
 	}
 
+	BT_ERR("%p 0x%2.2x", pchan, pchan->psm);
+
+	parent = pchan->sk;
+
 	bh_lock_sock(parent);
 
 	/* Check if the ACL is secure enough (if not SDP) */
@@ -2117,7 +2130,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
 	if (!sk)
 		goto response;
 
-	chan = l2cap_chan_alloc(sk);
+	chan = l2cap_chan_create(sk);
 	if (!chan) {
 		l2cap_sock_kill(sk);
 		goto response;
@@ -3745,11 +3758,14 @@ done:
 static inline int l2cap_conless_channel(struct l2cap_conn *conn, __le16 psm, struct sk_buff *skb)
 {
 	struct sock *sk;
+	struct l2cap_chan *chan;
 
-	sk = l2cap_get_sock_by_psm(0, psm, conn->src);
-	if (!sk)
+	chan = l2cap_global_chan_by_psm(0, psm, conn->src);
+	if (!chan)
 		goto drop;
 
+	sk = chan->sk;
+
 	bh_lock_sock(sk);
 
 	BT_DBG("sk %p, len %d", sk, skb->len);
@@ -3775,11 +3791,14 @@ done:
 static inline int l2cap_att_channel(struct l2cap_conn *conn, __le16 cid, struct sk_buff *skb)
 {
 	struct sock *sk;
+	struct l2cap_chan *chan;
 
-	sk = l2cap_get_sock_by_scid(0, cid, conn->src);
-	if (!sk)
+	chan = l2cap_global_chan_by_scid(0, cid, conn->src);
+	if (!chan)
 		goto drop;
 
+	sk = chan->sk;
+
 	bh_lock_sock(sk);
 
 	BT_DBG("sk %p, len %d", sk, skb->len);
@@ -3846,8 +3865,7 @@ static void l2cap_recv_frame(struct l2cap_conn *conn, struct sk_buff *skb)
 static int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
 {
 	int exact = 0, lm1 = 0, lm2 = 0;
-	register struct sock *sk;
-	struct hlist_node *node;
+	struct l2cap_chan *c;
 
 	if (type != ACL_LINK)
 		return -EINVAL;
@@ -3855,25 +3873,25 @@ static int l2cap_connect_ind(struct hci_dev *hdev, bdaddr_t *bdaddr, u8 type)
 	BT_DBG("hdev %s, bdaddr %s", hdev->name, batostr(bdaddr));
 
 	/* Find listening sockets and check their link_mode */
-	read_lock(&l2cap_sk_list.lock);
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		struct l2cap_chan *chan = l2cap_pi(sk)->chan;
+	read_lock(&chan_list_lock);
+	list_for_each_entry(c, &chan_list, global_l) {
+		struct sock *sk = c->sk;
 
 		if (sk->sk_state != BT_LISTEN)
 			continue;
 
 		if (!bacmp(&bt_sk(sk)->src, &hdev->bdaddr)) {
 			lm1 |= HCI_LM_ACCEPT;
-			if (chan->role_switch)
+			if (c->role_switch)
 				lm1 |= HCI_LM_MASTER;
 			exact++;
 		} else if (!bacmp(&bt_sk(sk)->src, BDADDR_ANY)) {
 			lm2 |= HCI_LM_ACCEPT;
-			if (chan->role_switch)
+			if (c->role_switch)
 				lm2 |= HCI_LM_MASTER;
 		}
 	}
-	read_unlock(&l2cap_sk_list.lock);
+	read_unlock(&chan_list_lock);
 
 	return exact ? lm1 : lm2;
 }
@@ -4126,25 +4144,22 @@ drop:
 
 static int l2cap_debugfs_show(struct seq_file *f, void *p)
 {
-	struct sock *sk;
-	struct hlist_node *node;
+	struct l2cap_chan *c;
 
-	read_lock_bh(&l2cap_sk_list.lock);
+	read_lock_bh(&chan_list_lock);
 
-	sk_for_each(sk, node, &l2cap_sk_list.head) {
-		struct l2cap_pinfo *pi = l2cap_pi(sk);
-		struct l2cap_chan *chan = pi->chan;
+	list_for_each_entry(c, &chan_list, global_l) {
+		struct sock *sk = c->sk;
 
 		seq_printf(f, "%s %s %d %d 0x%4.4x 0x%4.4x %d %d %d %d\n",
 					batostr(&bt_sk(sk)->src),
 					batostr(&bt_sk(sk)->dst),
-					sk->sk_state, __le16_to_cpu(chan->psm),
-					chan->scid, chan->dcid,
-					chan->imtu, chan->omtu, chan->sec_level,
-					chan->mode);
+					sk->sk_state, __le16_to_cpu(c->psm),
+					c->scid, c->dcid, c->imtu, c->omtu,
+					c->sec_level, c->mode);
 	}
 
-	read_unlock_bh(&l2cap_sk_list.lock);
+	read_unlock_bh(&chan_list_lock);
 
 	return 0;
 }
diff --git a/net/bluetooth/l2cap_sock.c b/net/bluetooth/l2cap_sock.c
index aca99cd5377..c98360d40b8 100644
--- a/net/bluetooth/l2cap_sock.c
+++ b/net/bluetooth/l2cap_sock.c
@@ -808,8 +808,7 @@ void l2cap_sock_kill(struct sock *sk)
 
 	/* Kill poor orphan */
 
-	l2cap_chan_free(l2cap_pi(sk)->chan);
-	bt_sock_unlink(&l2cap_sk_list, sk);
+	l2cap_chan_destroy(l2cap_pi(sk)->chan);
 	sock_set_flag(sk, SOCK_DEAD);
 	sock_put(sk);
 }
@@ -1025,7 +1024,6 @@ struct sock *l2cap_sock_alloc(struct net *net, struct socket *sock, int proto, g
 
 	setup_timer(&sk->sk_timer, l2cap_sock_timeout, (unsigned long) sk);
 
-	bt_sock_link(&l2cap_sk_list, sk);
 	return sk;
 }
 
@@ -1052,7 +1050,7 @@ static int l2cap_sock_create(struct net *net, struct socket *sock, int protocol,
 	if (!sk)
 		return -ENOMEM;
 
-	chan = l2cap_chan_alloc(sk);
+	chan = l2cap_chan_create(sk);
 	if (!chan) {
 		l2cap_sock_kill(sk);
 		return -ENOMEM;
-- 
cgit v1.2.3


From b3b1b061583ba4909b59a2f736825d86495fe956 Mon Sep 17 00:00:00 2001
From: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Date: Fri, 6 May 2011 09:42:31 +0200
Subject: Bluetooth: Double check sec req for pre 2.1 device

In case of pre v2.1 devices authentication request will return
success immediately if the link key already exists without any
authentication process.

That means, it's not possible to re-authenticate the link if you
already have combination key and for instance want to re-authenticate
to get the high security (use 16 digit pin).

Therefore, it's necessary to check security requirements on auth
complete event to prevent not enough secure connection.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
---
 include/net/bluetooth/hci_core.h |  1 +
 net/bluetooth/hci_conn.c         | 17 +++++++++++++++++
 net/bluetooth/rfcomm/core.c      |  2 +-
 3 files changed, 19 insertions(+), 1 deletion(-)

(limited to 'net/bluetooth')

diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 14cc3249c1e..6c994c004d1 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -422,6 +422,7 @@ void hci_conn_check_pending(struct hci_dev *hdev);
 
 struct hci_conn *hci_connect(struct hci_dev *hdev, int type, bdaddr_t *dst, __u8 sec_level, __u8 auth_type);
 int hci_conn_check_link_mode(struct hci_conn *conn);
+int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level);
 int hci_conn_security(struct hci_conn *conn, __u8 sec_level, __u8 auth_type);
 int hci_conn_change_link_key(struct hci_conn *conn);
 int hci_conn_switch_role(struct hci_conn *conn, __u8 role);
diff --git a/net/bluetooth/hci_conn.c b/net/bluetooth/hci_conn.c
index 7f5ad8a2b22..3163330cd4f 100644
--- a/net/bluetooth/hci_conn.c
+++ b/net/bluetooth/hci_conn.c
@@ -623,6 +623,23 @@ encrypt:
 }
 EXPORT_SYMBOL(hci_conn_security);
 
+/* Check secure link requirement */
+int hci_conn_check_secure(struct hci_conn *conn, __u8 sec_level)
+{
+	BT_DBG("conn %p", conn);
+
+	if (sec_level != BT_SECURITY_HIGH)
+		return 1; /* Accept if non-secure is required */
+
+	if (conn->key_type == HCI_LK_AUTH_COMBINATION ||
+			(conn->key_type == HCI_LK_COMBINATION &&
+			conn->pin_length == 16))
+		return 1;
+
+	return 0; /* Reject not secure link */
+}
+EXPORT_SYMBOL(hci_conn_check_secure);
+
 /* Change link key */
 int hci_conn_change_link_key(struct hci_conn *conn)
 {
diff --git a/net/bluetooth/rfcomm/core.c b/net/bluetooth/rfcomm/core.c
index 121a5c13b98..5759bb7054f 100644
--- a/net/bluetooth/rfcomm/core.c
+++ b/net/bluetooth/rfcomm/core.c
@@ -2096,7 +2096,7 @@ static void rfcomm_security_cfm(struct hci_conn *conn, u8 status, u8 encrypt)
 		if (!test_and_clear_bit(RFCOMM_AUTH_PENDING, &d->flags))
 			continue;
 
-		if (!status)
+		if (!status && hci_conn_check_secure(conn, d->sec_level))
 			set_bit(RFCOMM_AUTH_ACCEPT, &d->flags);
 		else
 			set_bit(RFCOMM_AUTH_REJECT, &d->flags);
-- 
cgit v1.2.3


From 83bc71b4102d2a288edaf9ee398b330b88a88086 Mon Sep 17 00:00:00 2001
From: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Date: Fri, 6 May 2011 18:41:43 -0300
Subject: Bluetooth: Add support for sending connection events for LE links

We need to be able for receive events notifying that the connection
was established, the connection attempt failed or that disconnection
happened.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
---
 net/bluetooth/hci_event.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

(limited to 'net/bluetooth')

diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index d5aa97ee6ff..f13ddbf858b 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -1440,7 +1440,7 @@ static inline void hci_disconn_complete_evt(struct hci_dev *hdev, struct sk_buff
 
 	conn->state = BT_CLOSED;
 
-	if (conn->type == ACL_LINK)
+	if (conn->type == ACL_LINK || conn->type == LE_LINK)
 		mgmt_disconnected(hdev->id, &conn->dst);
 
 	hci_proto_disconn_cfm(conn, ev->reason);
@@ -2659,12 +2659,15 @@ static inline void hci_le_conn_complete_evt(struct hci_dev *hdev, struct sk_buff
 	}
 
 	if (ev->status) {
+		mgmt_connect_failed(hdev->id, &ev->bdaddr, ev->status);
 		hci_proto_connect_cfm(conn, ev->status);
 		conn->state = BT_CLOSED;
 		hci_conn_del(conn);
 		goto unlock;
 	}
 
+	mgmt_connected(hdev->id, &ev->bdaddr);
+
 	conn->handle = __le16_to_cpu(ev->handle);
 	conn->state = BT_CONNECTED;
 
-- 
cgit v1.2.3


From 365227e5fdf3d117e096416d9d3cc148959a829e Mon Sep 17 00:00:00 2001
From: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Date: Fri, 6 May 2011 18:41:44 -0300
Subject: Bluetooth: Add support for disconnecting LE links via mgmt

If we can't find a ACL link between the devices, we search
the connection list one second time looking for LE links.

Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
---
 net/bluetooth/mgmt.c | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'net/bluetooth')

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 2481d257ed9..dae382ce702 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1033,6 +1033,9 @@ static int disconnect(struct sock *sk, u16 index, unsigned char *data, u16 len)
 	}
 
 	conn = hci_conn_hash_lookup_ba(hdev, ACL_LINK, &cp->bdaddr);
+	if (!conn)
+		conn = hci_conn_hash_lookup_ba(hdev, LE_LINK, &cp->bdaddr);
+
 	if (!conn) {
 		err = cmd_status(sk, index, MGMT_OP_DISCONNECT, ENOTCONN);
 		goto failed;
-- 
cgit v1.2.3


From 55183d06cd1bd939ceccdad628b0aae12c86b803 Mon Sep 17 00:00:00 2001
From: "Gustavo F. Padovan" <padovan@profusion.mobi>
Date: Wed, 11 May 2011 19:26:06 -0300
Subject: Bluetooth: Remove leftover debug messages

They were added by me while testing and I forgot to remove.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
---
 net/bluetooth/l2cap_core.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

(limited to 'net/bluetooth')

diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index d0769a83cb5..a5ab4a29ae3 100644
--- a/net/bluetooth/l2cap_core.c
+++ b/net/bluetooth/l2cap_core.c
@@ -2095,7 +2095,7 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
 	u16 dcid = 0, scid = __le16_to_cpu(req->scid);
 	__le16 psm = req->psm;
 
-	BT_ERR("psm 0x%2.2x scid 0x%4.4x", psm, scid);
+	BT_DBG("psm 0x%2.2x scid 0x%4.4x", psm, scid);
 
 	/* Check if we have socket listening on psm */
 	pchan = l2cap_global_chan_by_psm(BT_LISTEN, psm, conn->src);
@@ -2104,8 +2104,6 @@ static inline int l2cap_connect_req(struct l2cap_conn *conn, struct l2cap_cmd_hd
 		goto sendresp;
 	}
 
-	BT_ERR("%p 0x%2.2x", pchan, pchan->psm);
-
 	parent = pchan->sk;
 
 	bh_lock_sock(parent);
-- 
cgit v1.2.3