ipvs: Cache ipvs in ip_vs_genl_set_cmd

Compute ipvs early in ip_vs_genl_set_cmd and use the cached value to
access ipvs->sync_state.

Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Signed-off-by: Simon Horman <horms@verge.net.au>

diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index 20aeb99..7aae2dc 100644 (file)
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -3516,8 +3516,10 @@ static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info)
        int ret = 0, cmd;
        int need_full_svc = 0, need_full_dest = 0;
        struct net *net;
+       struct netns_ipvs *ipvs;
 
        net = skb_sknet(skb);
+       ipvs = net_ipvs(net);
        cmd = info->genlhdr->cmd;
 
        mutex_lock(&__ip_vs_mutex);
@@ -3579,7 +3581,7 @@ static int ip_vs_genl_set_cmd(struct sk_buff *skb, struct genl_info *info)
                        /* The synchronization protocol is incompatible
                         * with mixed family services
                         */
-                       if (net_ipvs(net)->sync_state) {
+                       if (ipvs->sync_state) {
                                ret = -EINVAL;
                                goto out;
                        }