diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-12-21 08:11:44 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-23 08:15:14 +0100 |
| commit | 0fd7bac6b6157eed6cf0cb86a1e88ba29e57c033 (patch) | |
| tree | bcc24e9c63587bc1e8e15ad60654de9c6f72883e /net/packet | |
| parent | rps: fix insufficient bounds checking in store_rps_dev_flow_table_cnt() (diff) | |
| download | linux-0fd7bac6b6157eed6cf0cb86a1e88ba29e57c033.tar.xz linux-0fd7bac6b6157eed6cf0cb86a1e88ba29e57c033.zip | |
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/packet')
| -rw-r--r-- | net/packet/af_packet.c | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index 82a6f34d39d0..3891702b81df 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -1630,8 +1630,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, if (snaplen > res) snaplen = res; - if (atomic_read(&sk->sk_rmem_alloc) + skb->truesize >= - (unsigned)sk->sk_rcvbuf) + if (atomic_read(&sk->sk_rmem_alloc) >= sk->sk_rcvbuf) goto drop_n_acct; if (skb_shared(skb)) { @@ -1762,8 +1761,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, if (po->tp_version <= TPACKET_V2) { if (macoff + snaplen > po->rx_ring.frame_size) { if (po->copy_thresh && - atomic_read(&sk->sk_rmem_alloc) + skb->truesize - < (unsigned)sk->sk_rcvbuf) { + atomic_read(&sk->sk_rmem_alloc) < sk->sk_rcvbuf) { if (skb_shared(skb)) { copy_skb = skb_clone(skb, GFP_ATOMIC); } else { |