ipvs: More reliable synchronization on connection close

This patch enhances the synchronization of the closing connections
between the master and the backup director. It prevents the closed
connections to expire with the 15 min timeout of the ESTABLISHED
state on the backup and makes them expire as they would do on the
master with much shorter timeouts.

Signed-off-by: Rumen G. Bogdanovski <rumen@voicecho.com>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/ipv4/ipvs/ip_vs_core.c b/net/ipv4/ipvs/ip_vs_core.c
index bcf6276ba4b2d875d7b514e508c91c86fc680e15..a7879eafc3b5313636ac6aa226902d53d9f20cc6 100644 (file)
--- a/net/ipv4/ipvs/ip_vs_core.c
+++ b/net/ipv4/ipvs/ip_vs_core.c
@@ -991,7 +991,8 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb,
               == sysctl_ip_vs_sync_threshold[0])) ||
             ((cp->protocol == IPPROTO_TCP) && (cp->old_state != cp->state) &&
              ((cp->state == IP_VS_TCP_S_FIN_WAIT) ||
-              (cp->state == IP_VS_TCP_S_CLOSE)))))
+              (cp->state == IP_VS_TCP_S_CLOSE_WAIT) ||
+              (cp->state == IP_VS_TCP_S_TIME_WAIT)))))
                ip_vs_sync_conn(cp);
        cp->old_state = cp->state;