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af_unix: Set TCP_ESTABLISHED for datagram sockets too

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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.

Signed-off-by: Cong Wang <cong.wang@bytedance.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210704190252.11866-5-xiyou.wangcong@gmail.com
This commit is contained in:
Cong Wang 2021-07-04 12:02:45 -07:00 committed by Alexei Starovoitov
parent 29df44fa52
commit 83301b5367
1 changed files with 8 additions and 6 deletions
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14
net/unix/af_unix.c
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@ -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 @@ restart:
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;
}