[RFC PATCH v8 16/19] vsock/loopback: enable SEQPACKET for transport

From: Arseny Krasnov <arseny.krasnov@kaspersky.com>
To: Stefan Hajnoczi <stefanha@redhat.com>,
	Stefano Garzarella <sgarzare@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Jason Wang <jasowang@redhat.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	Jorgen Hansen <jhansen@vmware.com>,
	Andra Paraschiv <andraprs@amazon.com>,
	Norbert Slusarek <nslusarek@gmx.net>,
	Colin Ian King <colin.king@canonical.com>,
	Jeff Vander Stoep <jeffv@google.com>,
	Alexander Popov <alex.popov@linux.com>
Cc: <kvm@vger.kernel.org>,
	<virtualization@lists.linux-foundation.org>,
	<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
	<stsp2@yandex.ru>, <arseny.krasnov@kaspersky.com>,
	<oxffffaa@gmail.com>
Subject: [RFC PATCH v8 16/19] vsock/loopback: enable SEQPACKET for transport
Date: Tue, 13 Apr 2021 15:46:39 +0300	[thread overview]
Message-ID: <20210413124642.3406320-1-arseny.krasnov@kaspersky.com> (raw)
In-Reply-To: <20210413123954.3396314-1-arseny.krasnov@kaspersky.com>

This adds SEQPACKET ops for loopback transport and 'seqpacket_allow()'
callback.

Signed-off-by: Arseny Krasnov <arseny.krasnov@kaspersky.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
---
 net/vmw_vsock/vsock_loopback.c | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/net/vmw_vsock/vsock_loopback.c b/net/vmw_vsock/vsock_loopback.c
index a45f7ffca8c5..d38ffdbecc84 100644
--- a/net/vmw_vsock/vsock_loopback.c
+++ b/net/vmw_vsock/vsock_loopback.c
@@ -63,6 +63,8 @@ static int vsock_loopback_cancel_pkt(struct vsock_sock *vsk)
 	return 0;
 }
 
+static bool vsock_loopback_seqpacket_allow(void);
+
 static struct virtio_transport loopback_transport = {
 	.transport = {
 		.module                   = THIS_MODULE,
@@ -89,6 +91,10 @@ static struct virtio_transport loopback_transport = {
 		.stream_is_active         = virtio_transport_stream_is_active,
 		.stream_allow             = virtio_transport_stream_allow,
 
+		.seqpacket_dequeue        = virtio_transport_seqpacket_dequeue,
+		.seqpacket_enqueue        = virtio_transport_seqpacket_enqueue,
+		.seqpacket_allow          = vsock_loopback_seqpacket_allow,
+
 		.notify_poll_in           = virtio_transport_notify_poll_in,
 		.notify_poll_out          = virtio_transport_notify_poll_out,
 		.notify_recv_init         = virtio_transport_notify_recv_init,
@@ -103,8 +109,14 @@ static struct virtio_transport loopback_transport = {
 	},
 
 	.send_pkt = vsock_loopback_send_pkt,
+	.seqpacket_allow = true
 };
 
+static bool vsock_loopback_seqpacket_allow(void)
+{
+	return loopback_transport.seqpacket_allow;
+}
+
 static void vsock_loopback_work(struct work_struct *work)
 {
 	struct vsock_loopback *vsock =
-- 
2.25.1

