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authorPeng Tao <bergwolf@gmail.com>2017-03-15 04:32:17 +0300
committerDavid S. Miller <davem@davemloft.net>2017-03-22 00:41:47 +0300
commit380feae0def7e6a115124a3219c3ec9b654dca32 (patch)
tree033d132eaa2822a9a133e571c65d4c5bfd033d1b /net/vmw_vsock
parent073b4f2c50fe67c7c66a059a4d6db52bb1465490 (diff)
downloadlinux-380feae0def7e6a115124a3219c3ec9b654dca32.tar.xz
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>
Diffstat (limited to 'net/vmw_vsock')
-rw-r--r--net/vmw_vsock/af_vsock.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 9f770f33c100..6f7f6757ceef 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -1102,10 +1102,19 @@ static const struct proto_ops vsock_dgram_ops = {
.sendpage = sock_no_sendpage,
};
+static int vsock_transport_cancel_pkt(struct vsock_sock *vsk)
+{
+ if (!transport->cancel_pkt)
+ return -EOPNOTSUPP;
+
+ return transport->cancel_pkt(vsk);
+}
+
static void vsock_connect_timeout(struct work_struct *work)
{
struct sock *sk;
struct vsock_sock *vsk;
+ int cancel = 0;
vsk = container_of(work, struct vsock_sock, dwork.work);
sk = sk_vsock(vsk);
@@ -1116,8 +1125,11 @@ static void vsock_connect_timeout(struct work_struct *work)
sk->sk_state = SS_UNCONNECTED;
sk->sk_err = ETIMEDOUT;
sk->sk_error_report(sk);
+ cancel = 1;
}
release_sock(sk);
+ if (cancel)
+ vsock_transport_cancel_pkt(vsk);
sock_put(sk);
}
@@ -1224,11 +1236,13 @@ static int vsock_stream_connect(struct socket *sock, struct sockaddr *addr,
err = sock_intr_errno(timeout);
sk->sk_state = SS_UNCONNECTED;
sock->state = SS_UNCONNECTED;
+ vsock_transport_cancel_pkt(vsk);
goto out_wait;
} else if (timeout == 0) {
err = -ETIMEDOUT;
sk->sk_state = SS_UNCONNECTED;
sock->state = SS_UNCONNECTED;
+ vsock_transport_cancel_pkt(vsk);
goto out_wait;
}