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mptcp: introduce 'sk' to replace 'sock->sk' in mptcp_listen()

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[ Upstream commit cfdcfeed6449d702825d249cb85346ecf56236fc ]

'sock->sk' is used frequently in mptcp_listen(). Therefore, we can
introduce the 'sk' and replace 'sock->sk' with it.

Acked-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Menglong Dong <imagedong@tencent.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stable-dep-of: 0226436acf24 ("mptcp: do not rely on implicit state check in mptcp_listen()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Menglong Dong 2023-01-06 10:57:20 -08:00 committed by Greg Kroah-Hartman
parent cde7f2fd63
commit fbe9fa195e
1 changed files with 7 additions and 6 deletions
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13
net/mptcp/protocol.c
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@ -3746,12 +3746,13 @@ static int mptcp_bind(struct socket *sock, struct sockaddr *uaddr, int addr_len)
static int mptcp_listen(struct socket *sock, int backlog)
{
struct mptcp_sock *msk = mptcp_sk(sock->sk);
struct sock *sk = sock->sk;
struct socket *ssock;
int err;
pr_debug("msk=%p", msk);
lock_sock(sock->sk);
lock_sock(sk);
ssock = __mptcp_nmpc_socket(msk);
if (!ssock) {
err = -EINVAL;
@ -3759,16 +3760,16 @@ static int mptcp_listen(struct socket *sock, int backlog)
}
mptcp_token_destroy(msk);
inet_sk_state_store(sock->sk, TCP_LISTEN);
sock_set_flag(sock->sk, SOCK_RCU_FREE);
inet_sk_state_store(sk, TCP_LISTEN);
sock_set_flag(sk, SOCK_RCU_FREE);
err = ssock->ops->listen(ssock, backlog);
inet_sk_state_store(sock->sk, inet_sk_state_load(ssock->sk));
inet_sk_state_store(sk, inet_sk_state_load(ssock->sk));
if (!err)
mptcp_copy_inaddrs(sock->sk, ssock->sk);
mptcp_copy_inaddrs(sk, ssock->sk);
unlock:
release_sock(sock->sk);
release_sock(sk);
return err;
}