bpf: Support passing args to sock_ops bpf function

Adds support for passing up to 4 arguments to sock_ops bpf functions. It
reusues the reply union, so the bpf_sock_ops structures are not
increased in size.

Signed-off-by: Lawrence Brakmo <brakmo@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 95461f02ac9a..d12f7f71c1c4 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -3469,7 +3469,7 @@ int tcp_connect(struct sock *sk)
         struct sk_buff *buff;
         int err;
 
-        tcp_call_bpf(sk, BPF_SOCK_OPS_TCP_CONNECT_CB);
+        tcp_call_bpf(sk, BPF_SOCK_OPS_TCP_CONNECT_CB, 0, NULL);
 
         if (inet_csk(sk)->icsk_af_ops->rebuild_header(sk))
                 return -EHOSTUNREACH; /* Routing failure or similar. */