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Commit 2ff969fb authored by Lawrence Brakmo's avatar Lawrence Brakmo Committed by David S. Miller
Browse files

bpf: Fix tcp_cong_kern.c sample program 



The program was returning -1 in some cases which is not allowed
by the verifier any longer.

Fixes: 390ee7e2 ("bpf: enforce return code for cgroup-bpf programs")
Signed-off-by: default avatarLawrence Brakmo <brakmo@fb.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a4174f05

samples/bpf/tcp_cong_kern.c

+4 −2
Original line number Original line Diff line number Diff line
@@ -39,8 +39,10 @@ int bpf_cong(struct bpf_sock_ops *skops) 
	 * if neither port numberis 55601

	 * if neither port numberis 55601

	 */

	 */

	if (bpf_ntohl(skops->remote_port) != 55601 &&

	if (bpf_ntohl(skops->remote_port) != 55601 &&

	    skops->local_port != 55601)

	    skops->local_port != 55601) {

		return -1;

		skops->reply = -1;

		return 1;

	}





	op = (int) skops->op;

	op = (int) skops->op;