[PATCH v3 10/18] xen/pvcalls: implement listen command

[Stefano Stabellini <sstabellini@kernel.org>]

Call inet_listen to implement the listen command.

Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
CC: boris.ostrovsky@oracle.com
CC: jgross@suse.com
---
 drivers/xen/pvcalls-back.c | 21 ++++++++++++++++++++-
 1 file changed, 20 insertions(+), 1 deletion(-)

diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c
index 4a0cfa3..a75586e 100644
--- a/drivers/xen/pvcalls-back.c
+++ b/drivers/xen/pvcalls-back.c
@@ -355,7 +355,26 @@ static int pvcalls_back_bind(struct xenbus_device *dev,
 static int pvcalls_back_listen(struct xenbus_device *dev,
 			       struct xen_pvcalls_request *req)
 {
-	return 0;
+	struct pvcalls_fedata *priv;
+	int ret = -EINVAL;
+	struct sockpass_mapping *map;
+	struct xen_pvcalls_response *rsp;
+
+	priv = dev_get_drvdata(&dev->dev);
+
+	map = radix_tree_lookup(&priv->socketpass_mappings, req->u.listen.id);
+	if (map == NULL)
+		goto out;
+
+	ret = inet_listen(map->sock, req->u.listen.backlog);
+
+out:
+	rsp = RING_GET_RESPONSE(&priv->ring, priv->ring.rsp_prod_pvt++);
+	rsp->req_id = req->req_id;
+	rsp->cmd = req->cmd;
+	rsp->u.listen.id = req->u.listen.id;
+	rsp->ret = ret;
+	return ret;
 }
 
 static int pvcalls_back_accept(struct xenbus_device *dev,
-- 
1.9.1