diff options
| author | Simon Horman <horms@verge.net.au> | 2009-08-31 12:18:48 (GMT) |
|---|---|---|
| committer | Patrick McHardy <kaber@trash.net> | 2009-08-31 12:18:48 (GMT) |
| commit | 1e66dafc75f40a08b2addb82779987b269b4ca23 (patch) | |
| tree | 8e8804cb6ffdd05e5ac7758d0559d4698026dd65 /net/netfilter/ipvs/ip_vs_core.c | |
| parent | 3993832464dd4e14a4c926583a11f0fa92c1f0f0 (diff) | |
| download | linux-fsl-qoriq-1e66dafc75f40a08b2addb82779987b269b4ca23.tar.xz | |
ipvs: Use atomic operations atomicly
A pointed out by Shin Hong, IPVS doesn't always use atomic operations
in an atomic manner. While this seems unlikely to be manifest in
strange behaviour, it seems appropriate to clean this up.
Cc: shin hong <hongshin@gmail.com>
Signed-off-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/netfilter/ipvs/ip_vs_core.c')
| -rw-r--r-- | net/netfilter/ipvs/ip_vs_core.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c index b227750..a986ee2 100644 --- a/net/netfilter/ipvs/ip_vs_core.c +++ b/net/netfilter/ipvs/ip_vs_core.c @@ -1259,7 +1259,7 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, struct ip_vs_iphdr iph; struct ip_vs_protocol *pp; struct ip_vs_conn *cp; - int ret, restart, af; + int ret, restart, af, pkts; af = (skb->protocol == htons(ETH_P_IP)) ? AF_INET : AF_INET6; @@ -1346,12 +1346,12 @@ ip_vs_in(unsigned int hooknum, struct sk_buff *skb, * Sync connection if it is about to close to * encorage the standby servers to update the connections timeout */ - atomic_inc(&cp->in_pkts); + pkts = atomic_add_return(1, &cp->in_pkts); if (af == AF_INET && (ip_vs_sync_state & IP_VS_STATE_MASTER) && (((cp->protocol != IPPROTO_TCP || cp->state == IP_VS_TCP_S_ESTABLISHED) && - (atomic_read(&cp->in_pkts) % sysctl_ip_vs_sync_threshold[1] + (pkts % sysctl_ip_vs_sync_threshold[1] == sysctl_ip_vs_sync_threshold[0])) || ((cp->protocol == IPPROTO_TCP) && (cp->old_state != cp->state) && ((cp->state == IP_VS_TCP_S_FIN_WAIT) || |