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authorEric Dumazet <eric.dumazet@gmail.com>2011-12-21 07:11:44 +0000
committerDavid S. Miller <davem@davemloft.net>2011-12-23 02:15:14 -0500
commit0fd7bac6b6157eed6cf0cb86a1e88ba29e57c033 (patch)
treebcc24e9c63587bc1e8e15ad60654de9c6f72883e /net/core
parenta0a129f8b6cff54ab479324a54aefdab5db4f240 (diff)
net: relax rcvbuf limits
skb->truesize might be big even for a small packet. Its even bigger after commit 87fb4b7b533 (net: more accurate skb truesize) and big MTU. We should allow queueing at least one packet per receiver, even with a low RCVBUF setting. Reported-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
-rw-r--r--net/core/sock.c6
1 files changed, 1 insertions, 5 deletions
diff --git a/net/core/sock.c b/net/core/sock.c
index 4ed7b1d12f5e..b23f174ab84c 100644
--- a/net/core/sock.c
+++ b/net/core/sock.c
@@ -288,11 +288,7 @@ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
unsigned long flags;
struct sk_buff_head *list = &sk->sk_receive_queue;
- /* Cast sk->rcvbuf to unsigned... It's pointless, but reduces
- number of warnings when compiling with -W --ANK
- */
- if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >=
- (unsigned)sk->sk_rcvbuf) {
+ if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) {
atomic_inc(&sk->sk_drops);
trace_sock_rcvqueue_full(sk, skb);
return -ENOMEM;