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[TCP]: Consolidate checking for tcp orphan count being too big.

Browse source 
tcp_out_of_resources() and tcp_close() perform the
same checking of number of orphan sockets. Move this
code into common place.

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelianov 2007-05-29 13:19:18 -07:00 committed by David S. Miller
parent 4e07a91c37
commit e4fd5da39f
3 changed files with 9 additions and 6 deletions
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6
include/net/tcp.h
View file

@ -254,6 +254,12 @@ static inline int between(__u32 seq1, __u32 seq2, __u32 seq3)
return seq3 - seq2 >= seq1 - seq2;
}
static inline int tcp_too_many_orphans(struct sock *sk, int num)
{
return (num > sysctl_tcp_max_orphans) ||
(sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2]);
}
extern struct proto tcp_prot;

5
net/ipv4/tcp.c
View file

@ -1674,9 +1674,8 @@ void tcp_close(struct sock *sk, long timeout)
}
if (sk->sk_state != TCP_CLOSE) {
sk_stream_mem_reclaim(sk);
if (atomic_read(sk->sk_prot->orphan_count) > sysctl_tcp_max_orphans ||
(sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2])) {
if (tcp_too_many_orphans(sk,
atomic_read(sk->sk_prot->orphan_count))) {
if (net_ratelimit())
printk(KERN_INFO "TCP: too many of orphaned "
"sockets\n");

4
net/ipv4/tcp_timer.c
View file

@ -78,9 +78,7 @@ static int tcp_out_of_resources(struct sock *sk, int do_reset)
if (sk->sk_err_soft)
orphans <<= 1;
if (orphans >= sysctl_tcp_max_orphans ||
(sk->sk_wmem_queued > SOCK_MIN_SNDBUF &&
atomic_read(&tcp_memory_allocated) > sysctl_tcp_mem[2])) {
if (tcp_too_many_orphans(sk, orphans)) {
if (net_ratelimit())
printk(KERN_INFO "Out of socket memory\n");