[Qemu-devel] [PATCH v2] vhost-user: print original request on error

["Michael S. Tsirkin" <mst@redhat.com>]

When we get an unexpected response, print out
the original request.
Helps debug protocol errors tremendously.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---

Changes from v1: add missing .

 hw/virtio/vhost-user.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/hw/virtio/vhost-user.c b/hw/virtio/vhost-user.c
index 3404b81..5bc6c45 100644
--- a/hw/virtio/vhost-user.c
+++ b/hw/virtio/vhost-user.c
@@ -121,8 +121,8 @@ static int vhost_user_read(struct vhost_dev *dev, VhostUserMsg *msg)
 
     r = qemu_chr_fe_read_all(chr, p, size);
     if (r != size) {
-        error_report("Failed to read msg header. Read %d instead of %d.", r,
-                size);
+        error_report("Failed to read msg header. Read %d instead of %d."
+                     " Original request %d.", r, size, msg->request);
         goto fail;
     }
 
-- 
MST