From: Vince Busam <vbusam@xxxxxxxxxx>
Add __ip_vs_addr_is_local_v6() to find out if an IPv6 address belongs to a
local interface. This function is used to decide whether to set the
IP_VS_CONN_F_LOCALNODE flag for IPv6 destinations.
Signed-off-by: Vince Busam <vbusam@xxxxxxxxxx>
1 files changed, 30 insertions(+), 3 deletions(-)
diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
index da2e431..cf52034 100644
--- a/net/netfilter/ipvs/ip_vs_ctl.c
+++ b/net/netfilter/ipvs/ip_vs_ctl.c
@@ -92,6 +92,23 @@ int ip_vs_get_debug_level(void)
}
#endif
+#ifdef CONFIG_IP_VS_IPV6
+/* Taken from rt6_fill_node() in net/ipv6/route.c, is there a better way? */
+static int __ip_vs_addr_is_local_v6(const struct in6_addr *addr) {
+ struct rt6_info *rt;
+ struct flowi fl = {
+ .oif = 0,
+ .nl_u = {
+ .ip6_u = {
+ .daddr = *addr,
+ .saddr = { .s6_addr32 = {0, 0, 0, 0} }, } },
+ };
+ if ((rt = (struct rt6_info *)ip6_route_output(&init_net, NULL, &fl)))
+ if (rt->rt6i_dev && (rt->rt6i_dev->flags&IFF_LOOPBACK))
+ return 1;
+ return 0;
+}
+#endif
/*
* update_defense_level is called from keventd and from sysctl,
* so it needs to protect itself from softirqs
@@ -708,9 +725,19 @@ __ip_vs_update_dest(struct ip_vs_service *svc,
conn_flags = udest->conn_flags | IP_VS_CONN_F_INACTIVE;
/* check if local node and update the flags */
- if (inet_addr_type(&init_net, udest->addr) == RTN_LOCAL) {
- conn_flags = (conn_flags & ~IP_VS_CONN_F_FWD_MASK)
- | IP_VS_CONN_F_LOCALNODE;
+#ifdef CONFIG_IP_VS_IPV6
+ if (svc->af == AF_INET6) {
+ if (__ip_vs_addr_is_local_v6(&udest->addr.v6)) {
+ conn_flags = (conn_flags & ~IP_VS_CONN_F_FWD_MASK)
+ | IP_VS_CONN_F_LOCALNODE;
+ }
+ }
+#endif
+ if (svc->af == AF_INET) {
+ if (inet_addr_type(&init_net, udest->addr.v4) == RTN_LOCAL) {
+ conn_flags = (conn_flags & ~IP_VS_CONN_F_FWD_MASK)
+ | IP_VS_CONN_F_LOCALNODE;
+ }
}
/* set the IP_VS_CONN_F_NOOUTPUT flag if not masquerading/NAT */
--
1.5.3.6
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