Commit 026763ec authored by Eric Dumazet's avatar Eric Dumazet Committed by Jakub Kicinski
Browse files

ipv6: raw: check sk->sk_rcvbuf earlier 



There is no point cloning an skb and having to free the clone
if the receive queue of the raw socket is full.

Signed-off-by: default avatarEric Dumazet <edumazet@google.com>
Reviewed-by: default avatarWillem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20240307162943.2523817-1-edumazet@google.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 5d9b7cb3

net/ipv6/raw.c

+7 −0
Original line number Diff line number Diff line
@@ -160,6 +160,13 @@ static bool ipv6_raw_deliver(struct sk_buff *skb, int nexthdr) 
		if (!raw_v6_match(net, sk, nexthdr, daddr, saddr,

				  inet6_iif(skb), inet6_sdif(skb)))

			continue;



		if (atomic_read(&sk->sk_rmem_alloc) >=

		    READ_ONCE(sk->sk_rcvbuf)) {

			atomic_inc(&sk->sk_drops);

			continue;

		}



		delivered = true;

		switch (nexthdr) {

		case IPPROTO_ICMPV6: