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bpf: Fix tcp_cong_kern.c sample program

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

Fixes: 390ee7e29f ("bpf: enforce return code for cgroup-bpf programs")
Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Lawrence Brakmo 2017-11-10 22:19:53 -08:00 committed by David S. Miller
parent a4174f0560
commit 2ff969fbe2
1 changed files with 4 additions and 2 deletions
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6
samples/bpf/tcp_cong_kern.c
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@ -39,8 +39,10 @@ int bpf_cong(struct bpf_sock_ops *skops)
* if neither port numberis 55601
*/
if (bpf_ntohl(skops->remote_port) != 55601 &&
skops->local_port != 55601)
return -1;
skops->local_port != 55601) {
skops->reply = -1;
return 1;
}
op = (int) skops->op;