[PATCH net-next 08/14] vsock: add vsock_create_connected() called by transports

Stefano Garzarella
2019-10-23T09:59:03Z

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>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
---
include/net/af_vsock.h | 5 +----
net/vmw_vsock/af_vsock.c | 20 +++++++++++++-------
net/vmw_vsock/hyperv_transport.c | 3 +--
net/vmw_vsock/virtio_transport_common.c | 3 +--
net/vmw_vsock/vmci_transport.c | 3 +--
5 files changed, 17 insertions(+), 17 deletions(-)

diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h
index 4b5d16840fd4..fa1570dc9f5c 100644
--- a/include/net/af_vsock.h
+++ b/include/net/af_vsock.h
@@ -76,10 +76,7 @@ struct vsock_sock {

s64 vsock_stream_has_data(struct vsock_sock *vsk);
s64 vsock_stream_has_space(struct vsock_sock *vsk);
-struct sock *__vsock_create(struct net *net,
- struct socket *sock,
- struct sock *parent,
- gfp_t priority, unsigned short type, int kern);
+struct sock *vsock_create_connected(struct sock *parent);

/**** TRANSPORT ****/

diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c
index 90ac46ea12ef..95878bed2c67 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)
{
@@ -705,6 +704,13 @@ 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);
diff --git a/net/vmw_vsock/hyperv_transport.c b/net/vmw_vsock/hyperv_transport.c
index d62297a62ca6..0ce792a1bf6c 100644
--- a/net/vmw_vsock/hyperv_transport.c
+++ b/net/vmw_vsock/hyperv_transport.c
@@ -360,8 +360,7 @@ static void hvs_open_connection(struct vmbus_channel *chan)
if (sk->sk_ack_backlog >= sk->sk_max_ack_backlog)
goto out;

- new = __vsock_create(sock_net(sk), NULL, sk, GFP_KERNEL,
- sk->sk_type, 0);
+ new = vsock_create_connected(sk);
if (!new)
goto out;

diff --git a/net/vmw_vsock/virtio_transport_common.c b/net/vmw_vsock/virtio_transport_common.c
index b2a310dfa158..f7d0ecbd8f97 100644
--- a/net/vmw_vsock/virtio_transport_common.c
+++ b/net/vmw_vsock/virtio_transport_common.c
@@ -1002,8 +1002,7 @@ virtio_transport_recv_listen(struct sock *sk, struct virtio_vsock_pkt *pkt)
return -ENOMEM;
}

- child = __vsock_create(sock_net(sk), NULL, sk, GFP_KERNEL,
- sk->sk_type, 0);
+ child = vsock_create_connected(sk);
if (!child) {
virtio_transport_reset(vsk, pkt);
return -ENOMEM;
diff --git a/net/vmw_vsock/vmci_transport.c b/net/vmw_vsock/vmci_transport.c
index 8290d37b6587..5955238ffc13 100644
--- a/net/vmw_vsock/vmci_transport.c
+++ b/net/vmw_vsock/vmci_transport.c
@@ -1004,8 +1004,7 @@ static int vmci_transport_recv_listen(struct sock *sk,
return -ECONNREFUSED;
}

- pending = __vsock_create(sock_net(sk), NULL, sk, GFP_KERNEL,
- sk->sk_type, 0);
+ pending = vsock_create_connected(sk);
if (!pending) {
vmci_transport_send_reset(sk, pkt);
return -ENOMEM;
--
2.21.0