[Patch bpf-next v5 10/11] sock_map: update sock type checks for UDP

[Cong Wang <xiyou.wangcong@xxxxxxxxx>]

From: Cong Wang <cong.wang@xxxxxxxxxxxxx>

Now UDP supports sockmap and redirection, we can safely update
the sock type checks for it accordingly.

Cc: John Fastabend <john.fastabend@xxxxxxxxx>
Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx>
Cc: Jakub Sitnicki <jakub@xxxxxxxxxxxxxx>
Cc: Lorenz Bauer <lmb@xxxxxxxxxxxxxx>
Signed-off-by: Cong Wang <cong.wang@xxxxxxxxxxxxx>
---
 net/core/sock_map.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/core/sock_map.c b/net/core/sock_map.c
index 596cbac24091..5ec8f8ce5557 100644
--- a/net/core/sock_map.c
+++ b/net/core/sock_map.c
@@ -549,7 +549,10 @@ static bool sk_is_udp(const struct sock *sk)
 
 static bool sock_map_redirect_allowed(const struct sock *sk)
 {
-	return sk_is_tcp(sk) && sk->sk_state != TCP_LISTEN;
+	if (sk_is_tcp(sk))
+		return sk->sk_state != TCP_LISTEN;
+	else
+		return sk->sk_state == TCP_ESTABLISHED;
 }
 
 static bool sock_map_sk_is_suitable(const struct sock *sk)
-- 
2.25.1