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net: add a limit parameter to sk_add_backlog()

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sk_add_backlog() & sk_rcvqueues_full() hard coded sk_rcvbuf as the
memory limit. We need to make this limit a parameter for TCP use.

No functional change expected in this patch, all callers still using the
old sk_rcvbuf limit.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Neal Cardwell <ncardwell@google.com>
Cc: Tom Herbert <therbert@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Yuchung Cheng <ycheng@google.com>
Cc: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Cc: Rick Jones <rick.jones2@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2012-04-22 23:34:26 +00:00
committed by David S. Miller
parent b98985073b
commit f545a38f74
10 changed files with 21 additions and 19 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
net/ipv6/tcp_ipv6.c
View File

@@ -1654,7 +1654,7 @@ process:
if (!tcp_prequeue(sk, skb))
ret = tcp_v6_do_rcv(sk, skb);
}
} else if (unlikely(sk_add_backlog(sk, skb))) {
} else if (unlikely(sk_add_backlog(sk, skb, sk->sk_rcvbuf))) {
bh_unlock_sock(sk);
NET_INC_STATS_BH(net, LINUX_MIB_TCPBACKLOGDROP);
goto discard_and_relse;