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caif: Handle dev_queue_xmit errors.

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Do proper handling of dev_queue_xmit errors in order to
avoid double free of skb and leaks in error conditions.
In cfctrl pending requests are removed when CAIF Link layer goes down.

Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
sjur.brandeland@stericsson.com 2011-05-13 02:44:06 +00:00 • committed by David S. Miller
parent bee925db9a
commit c85c2951d4
7 changed files with 119 additions and 47 deletions
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8
net/caif/caif_socket.c
View file

@ -604,7 +604,9 @@ static int caif_seqpkt_sendmsg(struct kiocb *kiocb, struct socket *sock,
goto err;
ret = transmit_skb(skb, cf_sk, noblock, timeo);
if (ret < 0)
goto err;
/* skb is already freed */
return ret;
return len;
err:
kfree_skb(skb);
@ -933,9 +935,9 @@ static int caif_release(struct socket *sock)
* caif_queue_rcv_skb checks SOCK_DEAD holding the queue lock,
* this ensures no packets when sock is dead.
*/
spin_lock(&sk->sk_receive_queue.lock);
spin_lock_bh(&sk->sk_receive_queue.lock);
sock_set_flag(sk, SOCK_DEAD);
spin_unlock(&sk->sk_receive_queue.lock);
spin_unlock_bh(&sk->sk_receive_queue.lock);
sock->sk = NULL;
dbfs_atomic_inc(&cnt.num_disconnect);