diff options
| author | Andrey Vagin <avagin@openvz.org> | 2017-05-17 11:39:05 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-05-18 10:32:58 -0400 |
| commit | de321ed38471257ee45eac145bfd539254d13954 (patch) | |
| tree | 9ad79c96c56f8380b39b4ef81514a6aa5dbb798b /net/ipv4/udp.c | |
| parent | 667271455f883d23e6418ef3376eb1214da9d066 (diff) | |
| download | linux-de321ed38471257ee45eac145bfd539254d13954.tar.bz2 | |
net: fix __skb_try_recv_from_queue to return the old behavior
This function has to return NULL on a error case, because there is a
separate error variable.
The offset has to be changed only if skb is returned
v2: fix udp code to not use an extra variable
Cc: Paolo Abeni <pabeni@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Cc: David S. Miller <davem@davemloft.net>
Fixes: 65101aeca522 ("net/sock: factor out dequeue/peek with offset cod")
Signed-off-by: Andrei Vagin <avagin@openvz.org>
Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/udp.c')
| -rw-r--r-- | net/ipv4/udp.c | 12 |
1 files changed, 3 insertions, 9 deletions
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 922a62d45714..e7b6cfcca627 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -1465,16 +1465,13 @@ struct sk_buff *__skb_recv_udp(struct sock *sk, unsigned int flags, error = -EAGAIN; *peeked = 0; do { - int _off = *off; - spin_lock_bh(&queue->lock); skb = __skb_try_recv_from_queue(sk, queue, flags, udp_skb_destructor, - peeked, &_off, err, + peeked, off, err, &last); if (skb) { spin_unlock_bh(&queue->lock); - *off = _off; return skb; } @@ -1488,20 +1485,17 @@ struct sk_buff *__skb_recv_udp(struct sock *sk, unsigned int flags, * the sk_receive_queue lock if fwd memory scheduling * is needed. */ - _off = *off; spin_lock(&sk_queue->lock); skb_queue_splice_tail_init(sk_queue, queue); skb = __skb_try_recv_from_queue(sk, queue, flags, udp_skb_dtor_locked, - peeked, &_off, err, + peeked, off, err, &last); spin_unlock(&sk_queue->lock); spin_unlock_bh(&queue->lock); - if (skb) { - *off = _off; + if (skb) return skb; - } busy_check: if (!sk_can_busy_loop(sk)) |