From: Cong Wang <xiyou.wangcong@gmail.com>
To: netdev@vger.kernel.org
Cc: bpf@vger.kernel.org, Cong Wang <cong.wang@bytedance.com>,
John Fastabend <john.fastabend@gmail.com>,
Daniel Borkmann <daniel@iogearbox.net>,
Jakub Sitnicki <jakub@cloudflare.com>,
Lorenz Bauer <lmb@cloudflare.com>
Subject: [PATCH bpf-next v5 04/11] af_unix: set TCP_ESTABLISHED for datagram sockets too
Date: Sun, 4 Jul 2021 12:02:45 -0700 [thread overview]
Message-ID: <20210704190252.11866-5-xiyou.wangcong@gmail.com> (raw)
In-Reply-To: <20210704190252.11866-1-xiyou.wangcong@gmail.com>
From: Cong Wang <cong.wang@bytedance.com>
Currently only unix stream socket sets TCP_ESTABLISHED,
datagram socket can set this too when they connect to its
peer socket. At least __ip4_datagram_connect() does the same.
This will be used to determine whether an AF_UNIX datagram
socket can be redirected to in sockmap.
Cc: John Fastabend <john.fastabend@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: Jakub Sitnicki <jakub@cloudflare.com>
Cc: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Cong Wang <cong.wang@bytedance.com>
---
net/unix/af_unix.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
diff --git a/net/unix/af_unix.c b/net/unix/af_unix.c
index 38863468768a..77fb3910e1c3 100644
--- a/net/unix/af_unix.c
+++ b/net/unix/af_unix.c
@@ -494,6 +494,7 @@ static void unix_dgram_disconnected(struct sock *sk, struct sock *other)
sk_error_report(other);
}
}
+ sk->sk_state = other->sk_state = TCP_CLOSE;
}
static void unix_sock_destructor(struct sock *sk)
@@ -1202,6 +1203,9 @@ static int unix_dgram_connect(struct socket *sock, struct sockaddr *addr,
unix_peer(sk) = other;
unix_state_double_unlock(sk, other);
}
+
+ if (unix_peer(sk))
+ sk->sk_state = other->sk_state = TCP_ESTABLISHED;
return 0;
out_unlock:
@@ -1434,12 +1438,10 @@ static int unix_socketpair(struct socket *socka, struct socket *sockb)
init_peercred(ska);
init_peercred(skb);
- if (ska->sk_type != SOCK_DGRAM) {
- ska->sk_state = TCP_ESTABLISHED;
- skb->sk_state = TCP_ESTABLISHED;
- socka->state = SS_CONNECTED;
- sockb->state = SS_CONNECTED;
- }
+ ska->sk_state = TCP_ESTABLISHED;
+ skb->sk_state = TCP_ESTABLISHED;
+ socka->state = SS_CONNECTED;
+ sockb->state = SS_CONNECTED;
return 0;
}
--
2.27.0
next prev parent reply other threads:[~2021-07-04 19:03 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-04 19:02 [PATCH bpf-next v5 00/11] sockmap: add sockmap support for unix datagram socket Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 01/11] sock_map: relax config dependency to CONFIG_NET Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 02/11] sock_map: lift socket state restriction for datagram sockets Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 03/11] af_unix: implement ->read_sock() for sockmap Cong Wang
2021-07-12 17:04 ` John Fastabend
2021-07-04 19:02 ` Cong Wang [this message]
2021-07-04 19:02 ` [PATCH bpf-next v5 05/11] af_unix: add a dummy ->close() " Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 06/11] af_unix: implement ->psock_update_sk_prot() Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 07/11] af_unix: implement unix_dgram_bpf_recvmsg() Cong Wang
2021-07-18 17:49 ` Eric Dumazet
2021-07-20 0:03 ` Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 08/11] selftests/bpf: factor out udp_socketpair() Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 09/11] selftests/bpf: factor out add_to_sockmap() Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 10/11] selftests/bpf: add a test case for unix sockmap Cong Wang
2021-07-04 19:02 ` [PATCH bpf-next v5 11/11] selftests/bpf: add test cases for redirection between udp and unix Cong Wang
2021-08-05 22:43 ` Andrii Nakryiko
2021-08-06 2:34 ` Cong Wang
2021-07-12 17:02 ` [PATCH bpf-next v5 00/11] sockmap: add sockmap support for unix datagram socket John Fastabend
2021-07-16 1:31 ` Alexei Starovoitov
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