[Minios-devel] [UNIKRAFT PATCH 6/9] plat/xen/drivers/9p: Register 9P transport

[Vlad-Andrei BĂDOIU (78692) <vlad_andrei.badoiu@xxxxxxxxxxxxxxx>]

From: Cristian Banu <cristb@xxxxxxxxx>

This patch adds stubs for the callbacks required by the transport layer
and registers the transport with the 9P API.

Signed-off-by: Cristian Banu <cristb@xxxxxxxxx>
---
 plat/xen/drivers/9p/9pfront.c | 37 ++++++++++++++++++++++++++++++++++-
 1 file changed, 36 insertions(+), 1 deletion(-)

diff --git a/plat/xen/drivers/9p/9pfront.c b/plat/xen/drivers/9p/9pfront.c
index 3898cb85..12591d07 100644
--- a/plat/xen/drivers/9p/9pfront.c
+++ b/plat/xen/drivers/9p/9pfront.c
@@ -38,6 +38,9 @@
 #include <uk/assert.h>
 #include <uk/essentials.h>
 #include <uk/list.h>
+#include <uk/9pdev.h>
+#include <uk/9preq.h>
+#include <uk/9pdev_trans.h>
 #include <uk/plat/spinlock.h>
 #include <xen-x86/mm.h>
 #include <xen-x86/irq.h>
@@ -187,14 +190,46 @@ out:
        return rc;
 }
 
+static int p9front_connect(struct uk_9pdev *p9dev __unused,
+                          const char *device_identifier __unused,
+                          const char *mount_args __unused)
+{
+       return 0;
+}
+
+static int p9front_disconnect(struct uk_9pdev *p9dev __unused)
+{
+       return 0;
+}
+
+static int p9front_request(struct uk_9pdev *p9dev __unused,
+                          struct uk_9preq *req __unused)
+{
+       return 0;
+}
+
+static const struct uk_9pdev_trans_ops p9front_trans_ops = {
+       .connect        = p9front_connect,
+       .disconnect     = p9front_disconnect,
+       .request        = p9front_request
+};
+
+static struct uk_9pdev_trans p9front_trans = {
+       .name           = "xen",
+       .ops            = &p9front_trans_ops,
+       .a              = NULL /* Set below. */
+};
+
+
 static int p9front_drv_init(struct uk_alloc *drv_allocator)
 {
        if (!drv_allocator)
                return -EINVAL;
 
        a = drv_allocator;
+       p9front_trans.a = a;
 
-       return 0;
+       return uk_9pdev_trans_register(&p9front_trans);
 }
 
 static int p9front_add_dev(struct xenbus_device *xendev)
-- 
2.20.1


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