From 3beee86a4b9374e38dba36b44e81f1423a0d6b54 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Sjur=20Br=C3=A6ndeland?= <sjur.brandeland@stericsson.com>
Date: Wed, 20 Mar 2013 13:51:24 +1030
Subject: [PATCH] virtio: Introduce vringh wrappers in virtio_config
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

Add wrappers for the host vrings to support loose
coupling between the virtio device and driver.

A new struct vringh_config_ops with the functions
find_vrhs() and del_vrhs() is added to the virtio_device
struct. This enables virtio drivers to manage virtio
host rings without detailed knowledge of how the
vrings are created and deleted.

The function vringh_notify() is added so vringh clients
can notify the other side that buffers are added to the
used-ring.

Cc: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Sjur Brændeland <sjur.brandeland@stericsson.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> (constified vringh_config)
---
Reading git-format-patch failed