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authorGustavo F. Padovan <padovan@profusion.mobi>2011-04-18 19:36:44 -0300
committerGustavo F. Padovan <padovan@profusion.mobi>2011-05-05 13:47:41 -0300
commit73b2ec18532f45e9028ce4c7bc8d7f8818eabd2a (patch)
treee4ec31e6f06d1e84ad4eff0f6ee2a5f7e004a1b8 /net/bluetooth
parent9e4425fff9e0a0fb6a8c705777ed861f991f8747 (diff)
downloadlinux-73b2ec18532f45e9028ce4c7bc8d7f8818eabd2a.tar.bz2
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>
Diffstat (limited to 'net/bluetooth')
-rw-r--r--net/bluetooth/l2cap_core.c32
-rw-r--r--net/bluetooth/l2cap_sock.c22
2 files changed, 24 insertions, 30 deletions
diff --git a/net/bluetooth/l2cap_core.c b/net/bluetooth/l2cap_core.c
index 98ddd867cfd4..9e3f64f05d49 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 2156dcecec0b..aca99cd5377d 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;