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tcp: bind() fix autoselection to share ports

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The current code checks for conflicts when the application
requests a specific port.  If there is no conflict, then
the request is granted.

On the other hand, the port autoselection done by the kernel
fails when all ports are bound even when there is a port
with no conflict available.

The fix changes port autoselection to check if there is a
conflict and use it if not.

Signed-off-by: Flavio Leitner <fbl@redhat.com>
Signed-off-by: Marcelo Ricardo Leitner <mleitner@redhat.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Flavio Leitner 2012-01-25 08:34:51 +00:00 committed by David S. Miller
parent 68315801db
commit 2b05ad33e1
1 changed files with 5 additions and 0 deletions
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5
net/ipv4/inet_connection_sock.c
View file

@ -128,6 +128,11 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum)
goto have_snum;
}
}
if (!inet_csk(sk)->icsk_af_ops->bind_conflict(sk, tb)) {
spin_unlock(&head->lock);
snum = rover;
goto have_snum;
}
goto next;
}
break;