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authorJulian Anastasov <ja@ssi.bg>2017-02-06 23:14:12 +0200
committerDavid S. Miller <davem@davemloft.net>2017-02-07 13:07:46 -0500
commit4ff0620354f2b39b9fe2a91c22c4de9d1fba0c8e (patch)
tree1d29569c1059553f11c2da53df68f3698df92906 /include/net/sock.h
parent9b8805a325591cf5b6b9df71200de25a2bd721fd (diff)
net: add dst_pending_confirm flag to skbuff
Add new skbuff flag to allow protocols to confirm neighbour. When same struct dst_entry can be used for many different neighbours we can not use it for pending confirmations. Add sock_confirm_neigh() helper to confirm the neighbour and use it for IPv4, IPv6 and VRF before dst_neigh_output. Signed-off-by: Julian Anastasov <ja@ssi.bg> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sock.h')
-rw-r--r--include/net/sock.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/net/sock.h b/include/net/sock.h
index 85d856b94b4b..6f83e78eaa5a 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1821,6 +1821,20 @@ static inline void sk_dst_confirm(struct sock *sk)
sk->sk_dst_pending_confirm = 1;
}
+static inline void sock_confirm_neigh(struct sk_buff *skb, struct neighbour *n)
+{
+ if (skb_get_dst_pending_confirm(skb)) {
+ struct sock *sk = skb->sk;
+ unsigned long now = jiffies;
+
+ /* avoid dirtying neighbour */
+ if (n->confirmed != now)
+ n->confirmed = now;
+ if (sk && sk->sk_dst_pending_confirm)
+ sk->sk_dst_pending_confirm = 0;
+ }
+}
+
bool sk_mc_loop(struct sock *sk);
static inline bool sk_can_gso(const struct sock *sk)