ipv6: support IPV6_PMTU_INTERFACE on sockets

[linux-drm-fsl-dcu.git] / include / net / ip6_route.h

diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h
index 733747ce163c1a08a91a24eb5277832f5c04d6ee..c2626ce1f2ad73a336eccf11dcb8760287fe5085 100644 (file)
--- a/include/net/ip6_route.h
+++ b/include/net/ip6_route.h
@@ -178,10 +178,15 @@ static inline int ip6_skb_dst_mtu(struct sk_buff *skb)
 {
        struct ipv6_pinfo *np = skb->sk ? inet6_sk(skb->sk) : NULL;
 
-       return (np && np->pmtudisc == IPV6_PMTUDISC_PROBE) ?
+       return (np && np->pmtudisc >= IPV6_PMTUDISC_PROBE) ?
               skb_dst(skb)->dev->mtu : dst_mtu(skb_dst(skb));
 }
 
+static inline bool ip6_sk_accept_pmtu(const struct sock *sk)
+{
+       return inet6_sk(sk)->pmtudisc != IPV6_PMTUDISC_INTERFACE;
+}
+
 static inline struct in6_addr *rt6_nexthop(struct rt6_info *rt)
 {
        return &rt->rt6i_gateway;