diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/ipv6.h | 2 | ||||
| -rw-r--r-- | include/net/ip6_route.h | 7 | ||||
| -rw-r--r-- | include/uapi/linux/in6.h | 4 |
3 files changed, 11 insertions, 2 deletions
diff --git a/include/linux/ipv6.h b/include/linux/ipv6.h index 3fde0664555..7e1ded0d8e4 100644 --- a/include/linux/ipv6.h +++ b/include/linux/ipv6.h @@ -191,7 +191,7 @@ struct ipv6_pinfo { /* sockopt flags */ __u16 recverr:1, sndflow:1, - pmtudisc:2, + pmtudisc:3, ipv6only:1, srcprefs:3, /* 001: prefer temporary address * 010: prefer public address diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h index 733747ce163..c2626ce1f2a 100644 --- 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; diff --git a/include/uapi/linux/in6.h b/include/uapi/linux/in6.h index 440d5c47914..f94f1d013bf 100644 --- a/include/uapi/linux/in6.h +++ b/include/uapi/linux/in6.h @@ -188,6 +188,10 @@ enum { #define IPV6_PMTUDISC_WANT 1 #define IPV6_PMTUDISC_DO 2 #define IPV6_PMTUDISC_PROBE 3 +/* same as IPV6_PMTUDISC_PROBE, provided for symetry with IPv4 + * also see comments on IP_PMTUDISC_INTERFACE + */ +#define IPV6_PMTUDISC_INTERFACE 4 /* Flowlabel */ #define IPV6_FLOWLABEL_MGR 32 |