lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

Bluetooth: Change sk lock to chan lock in L2CAP core

Browse Source 
Change sk lock to chan lock in l2cap core and move sk locks
to l2cap sock code. bh_locks were used because of being RCU
critical section. When needed use explicit socket locks.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Reviewed-by: Ulisses Furquim <ulisses@profusion.mobi>
Acked-by: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Andrei Emeltchenko
2012-02-22 17:11:56 +02:00
committed by Johan Hedberg
parent 643162a8e2
commit 6be3655552
2 changed files with 114 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
net/bluetooth/l2cap_sock.c
View File

@ -127,6 +127,8 @@ static int l2cap_sock_connect(struct socket *sock, struct sockaddr *addr, int al
if (err)
goto done;
lock_sock(sk);
err = bt_sock_wait_state(sk, BT_CONNECTED,
sock_sndtimeo(sk, flags & O_NONBLOCK));
done:
@ -810,14 +812,18 @@ static int l2cap_sock_shutdown(struct socket *sock, int how)
if (conn)
mutex_lock(&conn->chan_lock);
l2cap_chan_lock(chan);
lock_sock(sk);
if (!sk->sk_shutdown) {
if (chan->mode == L2CAP_MODE_ERTM)
err = __l2cap_wait_ack(sk);
sk->sk_shutdown = SHUTDOWN_MASK;
release_sock(sk);
l2cap_chan_close(chan, 0);
lock_sock(sk);
if (sock_flag(sk, SOCK_LINGER) && sk->sk_lingertime)
err = bt_sock_wait_state(sk, BT_CLOSED,
@ -828,6 +834,7 @@ static int l2cap_sock_shutdown(struct socket *sock, int how)
err = -sk->sk_err;
release_sock(sk);
l2cap_chan_unlock(chan);
if (conn)
mutex_unlock(&conn->chan_lock);
@ -874,8 +881,12 @@ static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb)
struct sock *sk = data;
struct l2cap_pinfo *pi = l2cap_pi(sk);
if (pi->rx_busy_skb)
return -ENOMEM;
lock_sock(sk);
if (pi->rx_busy_skb) {
err = -ENOMEM;
goto done;
}
err = sock_queue_rcv_skb(sk, skb);
@ -894,6 +905,9 @@ static int l2cap_sock_recv_cb(void *data, struct sk_buff *skb)
err = 0;
}
done:
release_sock(sk);
return err;
}