vsock: cancel packets when failing to connect
Otherwise we'll leave the packets queued until releasing vsock device. E.g., if guest is slow to start up, resulting ETIMEDOUT on connect, guest will get the connect requests from failed host sockets. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Jorgen Hansen <jhansen@vmware.com> Signed-off-by: Peng Tao <bergwolf@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1102,10 +1102,19 @@ static const struct proto_ops vsock_dgram_ops = {
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.sendpage = sock_no_sendpage,
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.sendpage = sock_no_sendpage,
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};
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};
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static int vsock_transport_cancel_pkt(struct vsock_sock *vsk)
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{
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if (!transport->cancel_pkt)
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return -EOPNOTSUPP;
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return transport->cancel_pkt(vsk);
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}
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static void vsock_connect_timeout(struct work_struct *work)
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static void vsock_connect_timeout(struct work_struct *work)
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{
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{
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struct sock *sk;
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struct sock *sk;
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struct vsock_sock *vsk;
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struct vsock_sock *vsk;
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int cancel = 0;
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vsk = container_of(work, struct vsock_sock, dwork.work);
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vsk = container_of(work, struct vsock_sock, dwork.work);
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sk = sk_vsock(vsk);
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sk = sk_vsock(vsk);
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@ -1116,8 +1125,11 @@ static void vsock_connect_timeout(struct work_struct *work)
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sk->sk_state = SS_UNCONNECTED;
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sk->sk_state = SS_UNCONNECTED;
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sk->sk_err = ETIMEDOUT;
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sk->sk_err = ETIMEDOUT;
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sk->sk_error_report(sk);
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sk->sk_error_report(sk);
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cancel = 1;
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}
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}
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release_sock(sk);
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release_sock(sk);
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if (cancel)
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vsock_transport_cancel_pkt(vsk);
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sock_put(sk);
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sock_put(sk);
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}
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}
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@ -1224,11 +1236,13 @@ static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
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err = sock_intr_errno(timeout);
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err = sock_intr_errno(timeout);
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sk->sk_state = SS_UNCONNECTED;
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sk->sk_state = SS_UNCONNECTED;
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sock->state = SS_UNCONNECTED;
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sock->state = SS_UNCONNECTED;
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vsock_transport_cancel_pkt(vsk);
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goto out_wait;
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goto out_wait;
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} else if (timeout == 0) {
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} else if (timeout == 0) {
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err = -ETIMEDOUT;
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err = -ETIMEDOUT;
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sk->sk_state = SS_UNCONNECTED;
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sk->sk_state = SS_UNCONNECTED;
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sock->state = SS_UNCONNECTED;
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sock->state = SS_UNCONNECTED;
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vsock_transport_cancel_pkt(vsk);
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goto out_wait;
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goto out_wait;
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}
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}
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