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| author | David Ahern <dsahern@gmail.com> | 2018-05-21 09:08:14 -0700 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-05-22 10:51:09 +0200 |
| commit | 901731b882d77dc53897aec45015ced42d56fe4c (patch) | |
| tree | 07c27d09002feed8c9429759dc8a1bd844c09e27 /include/net | |
| parent | 50d889b1789458d1f7d7f40ff4f628b670047773 (diff) | |
| download | linux-0-day-901731b882d77dc53897aec45015ced42d56fe4c.tar.gz linux-0-day-901731b882d77dc53897aec45015ced42d56fe4c.tar.xz | |
net/ipv6: Add helper to return path MTU based on fib result
Determine path MTU from a FIB lookup result. Logic is based on
ip6_dst_mtu_forward plus lookup of nexthop exception.
Add ip6_dst_mtu_forward to ipv6_stubs to handle access by core
bpf code.
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/addrconf.h | 2 | ||||
| -rw-r--r-- | include/net/ip6_fib.h | 6 | ||||
| -rw-r--r-- | include/net/ip6_route.h | 3 |
3 files changed, 11 insertions, 0 deletions
diff --git a/include/net/addrconf.h b/include/net/addrconf.h index ff766ab207e0e..c07d4dd093615 100644 --- a/include/net/addrconf.h +++ b/include/net/addrconf.h @@ -236,6 +236,8 @@ struct ipv6_stub { struct flowi6 *fl6, int oif, const struct sk_buff *skb, int strict); + u32 (*ip6_mtu_from_fib6)(struct fib6_info *f6i, struct in6_addr *daddr, + struct in6_addr *saddr); void (*udpv6_encap_enable)(void); void (*ndisc_send_na)(struct net_device *dev, const struct in6_addr *daddr, diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h index cc70f6da84627..7897efe807279 100644 --- a/include/net/ip6_fib.h +++ b/include/net/ip6_fib.h @@ -412,6 +412,12 @@ static inline struct net_device *fib6_info_nh_dev(const struct fib6_info *f6i) return f6i->fib6_nh.nh_dev; } +static inline +struct lwtunnel_state *fib6_info_nh_lwt(const struct fib6_info *f6i) +{ + return f6i->fib6_nh.nh_lwtstate; +} + void inet6_rt_notify(int event, struct fib6_info *rt, struct nl_info *info, unsigned int flags); diff --git a/include/net/ip6_route.h b/include/net/ip6_route.h index 4cf1ef935ed9e..7b9c82de11cc9 100644 --- a/include/net/ip6_route.h +++ b/include/net/ip6_route.h @@ -300,6 +300,9 @@ static inline unsigned int ip6_dst_mtu_forward(const struct dst_entry *dst) return mtu; } +u32 ip6_mtu_from_fib6(struct fib6_info *f6i, struct in6_addr *daddr, + struct in6_addr *saddr); + struct neighbour *ip6_neigh_lookup(const struct in6_addr *gw, struct net_device *dev, struct sk_buff *skb, const void *daddr); |