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[NET]: Revert incorrect accept queue backlog changes.

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This reverts two changes:

8488df894d
248f06726e

A backlog value of N really does mean allow "N + 1" connections
to queue to a listening socket.  This allows one to specify
"0" as the backlog and still get 1 connection.

Noticed by Gerrit Renker and Rick Jones.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-03-06 11:21:05 -08:00
parent 187f5f84ef
commit 64a146513f
2 changed files with 4 additions and 4 deletions
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2
include/net/sock.h
View File

@ -426,7 +426,7 @@ static inline void sk_acceptq_added(struct sock *sk)
static inline int sk_acceptq_is_full(struct sock *sk) static inline int sk_acceptq_is_full(struct sock *sk)
{ {
return sk->sk_ack_backlog >= sk->sk_max_ack_backlog; return sk->sk_ack_backlog > sk->sk_max_ack_backlog;
} }
/* /*

6
net/unix/af_unix.c
View File

@ -934,7 +934,7 @@ static long unix_wait_for_peer(struct sock *other, long timeo)
sched = !sock_flag(other, SOCK_DEAD) && sched = !sock_flag(other, SOCK_DEAD) &&
!(other->sk_shutdown & RCV_SHUTDOWN) && !(other->sk_shutdown & RCV_SHUTDOWN) &&
(skb_queue_len(&other->sk_receive_queue) >= (skb_queue_len(&other->sk_receive_queue) >
other->sk_max_ack_backlog); other->sk_max_ack_backlog);
unix_state_runlock(other); unix_state_runlock(other);
@ -1008,7 +1008,7 @@ restart:
if (other->sk_state != TCP_LISTEN) if (other->sk_state != TCP_LISTEN)
goto out_unlock; goto out_unlock;
if (skb_queue_len(&other->sk_receive_queue) >= if (skb_queue_len(&other->sk_receive_queue) >
other->sk_max_ack_backlog) { other->sk_max_ack_backlog) {
err = -EAGAIN; err = -EAGAIN;
if (!timeo) if (!timeo)
@ -1381,7 +1381,7 @@ restart:
} }
if (unix_peer(other) != sk && if (unix_peer(other) != sk &&
(skb_queue_len(&other->sk_receive_queue) >= (skb_queue_len(&other->sk_receive_queue) >
other->sk_max_ack_backlog)) { other->sk_max_ack_backlog)) {
if (!timeo) { if (!timeo) {
err = -EAGAIN; err = -EAGAIN;