Commit f574f7f8 authored by Gao Feng's avatar Gao Feng Committed by David S. Miller
Browse files

net: bpf: Use the protocol's set_rcvlowat behavior if there is one 



The commit d1361840 ("tcp: fix SO_RCVLOWAT and RCVBUF autotuning")
add one new (struct proto_ops)->set_rcvlowat method so that a protocol
can override the default setsockopt(SO_RCVLOWAT) behavior.

The prior bpf codes don't check and invoke the protos's set_rcvlowat,
now correct it.

Signed-off-by: default avatarGao Feng <gfree.wind@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7a542bee

net/core/filter.c

+4 −1
Original line number Diff line number Diff line
@@ -5063,6 +5063,9 @@ static int __bpf_setsockopt(struct sock *sk, int level, int optname, 
		case SO_RCVLOWAT:

			if (val < 0)

				val = INT_MAX;

			if (sk->sk_socket && sk->sk_socket->ops->set_rcvlowat)

				ret = sk->sk_socket->ops->set_rcvlowat(sk, val);

			else

				WRITE_ONCE(sk->sk_rcvlowat, val ? : 1);

			break;

		case SO_MARK: