diff options
| author | Lawrence Brakmo <brakmo@fb.com> | 2017-11-11 09:19:53 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-11-11 09:52:41 +0300 |
| commit | 2ff969fbe2bfa4486b66226917352d4bb12ec1cb (patch) | |
| tree | 264456174e35e9f3b3ec3259774814c3e3367723 /samples | |
| parent | a4174f0560f849317239478b1b22afbf03a6eda2 (diff) | |
| download | linux-2ff969fbe2bfa4486b66226917352d4bb12ec1cb.tar.xz | |
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: 390ee7e29fc8 ("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>
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/bpf/tcp_cong_kern.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/samples/bpf/tcp_cong_kern.c b/samples/bpf/tcp_cong_kern.c index dac15bce1fa9..ad0f1ba8206a 100644 --- a/samples/bpf/tcp_cong_kern.c +++ b/samples/bpf/tcp_cong_kern.c @@ -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; |