[PATCH 17/20] IPVS: Minimise ip_vs_leave when CONFIG_SYSCTL is undefined

Simon Horman
2011-03-14T03:46:02Z

Much of ip_vs_leave() is unnecessary if CONFIG_SYSCTL is undefined.

I tried an approach of breaking the now #ifdef'ed portions out
into a separate function. However this appeared to grow the
compiled code on x86_64 by about 200 bytes in the case where
CONFIG_SYSCTL is defined. So I have gone with the simpler though
less elegant #ifdef'ed solution for now.

Signed-off-by: Simon Horman <horms@verge.net.au>
---
net/netfilter/ipvs/ip_vs_core.c | 9 +++++++--
1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/net/netfilter/ipvs/ip_vs_core.c b/net/netfilter/ipvs/ip_vs_core.c
index d418bc6..07accf6 100644
--- a/net/netfilter/ipvs/ip_vs_core.c
+++ b/net/netfilter/ipvs/ip_vs_core.c
@@ -499,11 +499,13 @@ ip_vs_schedule(struct ip_vs_service *svc, struct sk_buff *skb,
int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
struct ip_vs_proto_data *pd)
{
- struct net *net;
- struct netns_ipvs *ipvs;
__be16 _ports[2], *pptr;
struct ip_vs_iphdr iph;
+#ifdef CONFIG_SYSCTL
+ struct net *net;
+ struct netns_ipvs *ipvs;
int unicast;
+#endif

ip_vs_fill_iphdr(svc->af, skb_network_header(skb), &iph);

@@ -512,6 +514,8 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
ip_vs_service_put(svc);
return NF_DROP;
}
+
+#ifdef CONFIG_SYSCTL
net = skb_net(skb);

#ifdef CONFIG_IP_VS_IPV6
@@ -563,6 +567,7 @@ int ip_vs_leave(struct ip_vs_service *svc, struct sk_buff *skb,
ip_vs_conn_put(cp);
return ret;
}
+#endif

/*
* When the virtual ftp service is presented, packets destined
--
1.7.2.3