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Message-Id: <20210310053222.41371-11-xiyou.wangcong@gmail.com>
Date: Tue, 9 Mar 2021 21:32:21 -0800
From: Cong Wang <xiyou.wangcong@...il.com>
To: netdev@...r.kernel.org
Cc: bpf@...r.kernel.org, duanxiongchun@...edance.com,
wangdongdong.6@...edance.com, jiang.wang@...edance.com,
Cong Wang <cong.wang@...edance.com>,
John Fastabend <john.fastabend@...il.com>,
Daniel Borkmann <daniel@...earbox.net>,
Jakub Sitnicki <jakub@...udflare.com>,
Lorenz Bauer <lmb@...udflare.com>
Subject: [Patch bpf-next v4 10/11] sock_map: update sock type checks for UDP
From: Cong Wang <cong.wang@...edance.com>
Now UDP supports sockmap and redirection, we can safely update
the sock type checks for it accordingly.
Cc: John Fastabend <john.fastabend@...il.com>
Cc: Daniel Borkmann <daniel@...earbox.net>
Cc: Jakub Sitnicki <jakub@...udflare.com>
Cc: Lorenz Bauer <lmb@...udflare.com>
Signed-off-by: Cong Wang <cong.wang@...edance.com>
---
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 82e33622a020..69293495c4a9 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
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