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[PATCH v5 10/18] xen/pvcalls: implement listen command

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Call inet_listen to implement the listen command.

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

diff --git a/drivers/xen/pvcalls-back.c b/drivers/xen/pvcalls-back.c
index 2c0bfef..2a47425 100644
--- a/drivers/xen/pvcalls-back.c
+++ b/drivers/xen/pvcalls-back.c
@@ -361,6 +361,27 @@ static int pvcalls_back_bind(struct xenbus_device *dev,
 static int pvcalls_back_listen(struct xenbus_device *dev,
 			       struct xen_pvcalls_request *req)
 {
+	struct pvcalls_fedata *fedata;
+	int ret = -EINVAL;
+	struct sockpass_mapping *map;
+	struct xen_pvcalls_response *rsp;
+
+	fedata = dev_get_drvdata(&dev->dev);
+
+	down(&fedata->socket_lock);
+	map = radix_tree_lookup(&fedata->socketpass_mappings, req->u.listen.id);
+	up(&fedata->socket_lock);
+	if (map == NULL)
+		goto out;
+
+	ret = inet_listen(map->sock, req->u.listen.backlog);
+
+out:
+	rsp = RING_GET_RESPONSE(&fedata->ring, fedata->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 0;
 }
 
-- 
1.9.1

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[PATCH v5 00/18] introduce the Xen PV Calls backend Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 17/18] xen/pvcalls: implement write Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 13/18] xen/pvcalls: implement release command Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 10/18] xen/pvcalls: implement listen command Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 18/18] xen: introduce a Kconfig option to enable the pvcalls backend Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 11/18] xen/pvcalls: implement accept command Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 16/18] xen/pvcalls: implement read Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 15/18] xen/pvcalls: implement the ioworker functions Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 02/18] xen/pvcalls: introduce the pvcalls xenbus backend Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 12/18] xen/pvcalls: implement poll command Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 06/18] xen/pvcalls: handle commands from the frontend Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
    Re: [PATCH v5 06/18] xen/pvcalls: handle commands from the frontend Juergen Gross <jgross@suse.com> - 2017-07-03 13:30 +0200
  [PATCH v5 09/18] xen/pvcalls: implement bind command Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
  [PATCH v5 01/18] xen: introduce the pvcalls interface header Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
    [PATCH v5 03/18] xen/pvcalls: initialize the module and register the xenbus backend Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
    [PATCH v5 07/18] xen/pvcalls: implement socket command Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
    [PATCH v5 05/18] xen/pvcalls: connect to a frontend Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
    [PATCH v5 14/18] xen/pvcalls: disconnect and module_exit Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
    [PATCH v5 08/18] xen/pvcalls: implement connect command Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200
    [PATCH v5 04/18] xen/pvcalls: xenbus state handling Stefano Stabellini <sstabellini@kernel.org> - 2017-06-22 21:20 +0200

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