vsock: add vsock_create_connected() called by transports

All transports call __vsock_create() with the same parameters,
most of them depending on the parent socket. In order to simplify
the VSOCK core APIs exposed to the transports, this patch adds
the vsock_create_connected() callable from transports to create
a new socket when a connection request is received.
We also unexported the __vsock_create().

Suggested-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 13 insertions, 7 deletions

diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 11b88094e3b2..7c11ac1bc542 100644
--- a/net/vmw_vsock/af_vsock.c
+++ b/net/vmw_vsock/af_vsock.c
@@ -567,12 +567,12 @@ static int __vsock_bind(struct sock *sk, struct sockaddr_vm *addr)
 
 static void vsock_connect_timeout(struct work_struct *work);
 
-struct sock *__vsock_create(struct net *net,
-			    struct socket *sock,
-			    struct sock *parent,
-			    gfp_t priority,
-			    unsigned short type,
-			    int kern)
+static struct sock *__vsock_create(struct net *net,
+				   struct socket *sock,
+				   struct sock *parent,
+				   gfp_t priority,
+				   unsigned short type,
+				   int kern)
 {
 	struct sock *sk;
 	struct vsock_sock *psk;
@@ -639,7 +639,6 @@ struct sock *__vsock_create(struct net *net,
 
 	return sk;
 }
-EXPORT_SYMBOL_GPL(__vsock_create);
 
 static void __vsock_release(struct sock *sk, int level)
 {
@@ -703,6 +702,13 @@ static int vsock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
 	return err;
 }
 
+struct sock *vsock_create_connected(struct sock *parent)
+{
+	return __vsock_create(sock_net(parent), NULL, parent, GFP_KERNEL,
+			      parent->sk_type, 0);
+}
+EXPORT_SYMBOL_GPL(vsock_create_connected);
+
 s64 vsock_stream_has_data(struct vsock_sock *vsk)
 {
 	return vsk->transport->stream_has_data(vsk);