The program was returning -1 in some cases which is not allowed by the verifier any longer.
Fixes: 8550f328f45d ("bpf: Support for per connection SYN/SYN-ACK RTOs") Signed-off-by: Lawrence Brakmo <bra...@fb.com> --- samples/bpf/tcp_synrto_kern.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/samples/bpf/tcp_synrto_kern.c b/samples/bpf/tcp_synrto_kern.c index 3c3fc83..232bb24 100644 --- a/samples/bpf/tcp_synrto_kern.c +++ b/samples/bpf/tcp_synrto_kern.c @@ -38,8 +38,10 @@ int bpf_synrto(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; -- 2.9.5