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| author | Vitaliy Gusev <vgusev@openvz.org> | 2008-04-15 20:26:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-04-15 20:26:34 -0700 |
| commit | 56f367bbfd5a7439961499ca6a2f0822d2074d83 (patch) | |
| tree | cdd34f6fed1fcbaa80f2fb2bf17df4fe03a316db /net | |
| parent | c4cbb34bbdaaa841ef7c027f7b420db4c318c4fd (diff) | |
| download | linux-56f367bbfd5a7439961499ca6a2f0822d2074d83.tar.gz linux-56f367bbfd5a7439961499ca6a2f0822d2074d83.tar.bz2 linux-56f367bbfd5a7439961499ca6a2f0822d2074d83.zip | |
[TCP]: Add return value indication to tcp_prune_ofo_queue().
Returns non-zero if tp->out_of_order_queue was seen non-empty.
This allows tcp_try_rmem_schedule() to return early.
Signed-off-by: Vitaliy Gusev <vgusev@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
| -rw-r--r-- | net/ipv4/tcp_input.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/net/ipv4/tcp_input.c b/net/ipv4/tcp_input.c index 61db7b1eb995..bbb7d88a16b4 100644 --- a/net/ipv4/tcp_input.c +++ b/net/ipv4/tcp_input.c @@ -3841,7 +3841,7 @@ static void tcp_ofo_queue(struct sock *sk) } } -static void tcp_prune_ofo_queue(struct sock *sk); +static int tcp_prune_ofo_queue(struct sock *sk); static int tcp_prune_queue(struct sock *sk); static inline int tcp_try_rmem_schedule(struct sock *sk, unsigned int size) @@ -3853,7 +3853,9 @@ static inline int tcp_try_rmem_schedule(struct sock *sk, unsigned int size) return -1; if (!sk_rmem_schedule(sk, size)) { - tcp_prune_ofo_queue(sk); + if (!tcp_prune_ofo_queue(sk)) + return -1; + if (!sk_rmem_schedule(sk, size)) return -1; } @@ -4211,10 +4213,12 @@ static void tcp_collapse_ofo_queue(struct sock *sk) /* * Purge the out-of-order queue. + * Return true if queue was pruned. */ -static void tcp_prune_ofo_queue(struct sock *sk) +static int tcp_prune_ofo_queue(struct sock *sk) { struct tcp_sock *tp = tcp_sk(sk); + int res = 0; if (!skb_queue_empty(&tp->out_of_order_queue)) { NET_INC_STATS_BH(LINUX_MIB_OFOPRUNED); @@ -4228,7 +4232,9 @@ static void tcp_prune_ofo_queue(struct sock *sk) if (tp->rx_opt.sack_ok) tcp_sack_reset(&tp->rx_opt); sk_mem_reclaim(sk); + res = 1; } + return res; } /* Reduce allocated memory if we can, trying to get |