diff options
| author | Julian Anastasov <ja@ssi.bg> | 2017-02-06 23:14:12 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-02-07 13:07:46 -0500 |
| commit | 4ff0620354f2b39b9fe2a91c22c4de9d1fba0c8e (patch) | |
| tree | 1d29569c1059553f11c2da53df68f3698df92906 /include/net/sock.h | |
| parent | 9b8805a325591cf5b6b9df71200de25a2bd721fd (diff) | |
| download | linux-4ff0620354f2b39b9fe2a91c22c4de9d1fba0c8e.tar.gz linux-4ff0620354f2b39b9fe2a91c22c4de9d1fba0c8e.tar.xz | |
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.h | 14 |
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) |