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@xxxxxxxxxxxxxx>
---
include/net/bluetooth/l2cap.h | 4 +++
net/bluetooth/l2cap_core.c | 44 +++++++++++++++++++++++++++++++++++++++++
net/bluetooth/l2cap_sock.c | 44 ++++++++++------------------------------
3 files changed, 59 insertions(+), 33 deletions(-)
diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
index c34b1c1..f5f3c2c 100644
--- a/include/net/bluetooth/l2cap.h
+++ b/include/net/bluetooth/l2cap.h
@@ -458,6 +458,10 @@ 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);
+
void l2cap_sock_set_timer(struct sock *sk, long timeout);
void l2cap_sock_clear_timer(struct sock *sk);
void __l2cap_sock_close(struct sock *sk, int reason);
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 338d8c3..98ddd86 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 09cc7a0..2156dce 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);
--
1.7.5.rc1
--
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