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-rw-r--r--net/ipv6/seg6_iptunnel.c27
1 files changed, 26 insertions, 1 deletions
diff --git a/net/ipv6/seg6_iptunnel.c b/net/ipv6/seg6_iptunnel.c
index dda2c5147ef0..30ef1d1d182e 100644
--- a/net/ipv6/seg6_iptunnel.c
+++ b/net/ipv6/seg6_iptunnel.c
@@ -237,6 +237,9 @@ static int seg6_do_srh(struct sk_buff *skb)
static int seg6_input(struct sk_buff *skb)
{
+ struct dst_entry *orig_dst = skb_dst(skb);
+ struct dst_entry *dst = NULL;
+ struct seg6_lwt *slwt;
int err;
err = seg6_do_srh(skb);
@@ -245,8 +248,30 @@ static int seg6_input(struct sk_buff *skb)
return err;
}
+ slwt = seg6_lwt_lwtunnel(orig_dst->lwtstate);
+
+#ifdef CONFIG_DST_CACHE
+ preempt_disable();
+ dst = dst_cache_get(&slwt->cache);
+ preempt_enable();
+#endif
+
skb_dst_drop(skb);
- ip6_route_input(skb);
+
+ if (!dst) {
+ ip6_route_input(skb);
+#ifdef CONFIG_DST_CACHE
+ dst = skb_dst(skb);
+ if (!dst->error) {
+ preempt_disable();
+ dst_cache_set_ip6(&slwt->cache, dst,
+ &ipv6_hdr(skb)->saddr);
+ preempt_enable();
+ }
+#endif
+ } else {
+ skb_dst_set(skb, dst);
+ }
return dst_input(skb);
}