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IPVS: Add ip_vs_route_me_harder() 

Add ip_vs_route_me_harder() to avoid repeating the same code twice.

Signed-off-by: Simon Horman <horms@verge.net.au>
This commit is contained in:
Simon Horman 2011-02-04 18:33:01 +09:00
parent 6ef757f965
commit ba4fd7e966
1 changed files with 22 additions and 26 deletions
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48
net/netfilter/ipvs/ip_vs_core.c
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@ -631,6 +631,24 @@ static inline int ip_vs_gather_frags_v6(struct sk_buff *skb, u_int32_t user)
}
#endif
static int ip_vs_route_me_harder(int af, struct sk_buff *skb)
{
struct netns_ipvs *ipvs = net_ipvs(skb_net(skb));
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
if (ipvs->sysctl_snat_reroute && ip6_route_me_harder(skb) != 0)
return 1;
} else
#endif
if ((ipvs->sysctl_snat_reroute ||
skb_rtable(skb)->rt_flags & RTCF_LOCAL) &&
ip_route_me_harder(skb, RTN_LOCAL) != 0)
return 1;
return 0;
}
/*
* Packet has been made sufficiently writable in caller
* - inout: 1=in->out, 0=out->in
@ -737,7 +755,6 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
struct ip_vs_protocol *pp,
unsigned int offset, unsigned int ihl)
{
struct netns_ipvs *ipvs;
unsigned int verdict = NF_DROP;
if (IP_VS_FWD_METHOD(cp) != 0) {
@ -759,8 +776,6 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
if (!skb_make_writable(skb, offset))
goto out;
ipvs = net_ipvs(skb_net(skb));
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6)
ip_vs_nat_icmp_v6(skb, pp, cp, 1);
@ -768,16 +783,8 @@ static int handle_response_icmp(int af, struct sk_buff *skb,
#endif
ip_vs_nat_icmp(skb, pp, cp, 1);
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
if (ipvs->sysctl_snat_reroute && ip6_route_me_harder(skb) != 0)
goto out;
} else
#endif
if ((ipvs->sysctl_snat_reroute ||
skb_rtable(skb)->rt_flags & RTCF_LOCAL) &&
ip_route_me_harder(skb, RTN_LOCAL) != 0)
goto out;
if (ip_vs_route_me_harder(af, skb))
goto out;
/* do the statistics and put it back */
ip_vs_out_stats(cp, skb);
@ -985,7 +992,6 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
struct ip_vs_conn *cp, int ihl)
{
struct ip_vs_protocol *pp = pd->pp;
struct netns_ipvs *ipvs;
IP_VS_DBG_PKT(11, af, pp, skb, 0, "Outgoing packet");
@ -1021,18 +1027,8 @@ handle_response(int af, struct sk_buff *skb, struct ip_vs_proto_data *pd,
* if it came from this machine itself. So re-compute
* the routing information.
*/
ipvs = net_ipvs(skb_net(skb));
#ifdef CONFIG_IP_VS_IPV6
if (af == AF_INET6) {
if (ipvs->sysctl_snat_reroute && ip6_route_me_harder(skb) != 0)
goto drop;
} else
#endif
if ((ipvs->sysctl_snat_reroute ||
skb_rtable(skb)->rt_flags & RTCF_LOCAL) &&
ip_route_me_harder(skb, RTN_LOCAL) != 0)
goto drop;
if (ip_vs_route_me_harder(af, skb))
goto drop;
IP_VS_DBG_PKT(10, af, pp, skb, 0, "After SNAT");