From 24d1eb33eb2ccd995a845a4d4b793e2619a9e460 Mon Sep 17 00:00:00 2001
From: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Date: Tue, 27 May 2014 15:05:35 +0300
Subject: Add vhost_ops to vhost_dev struct and replace all relevant ioctls

Decouple vhost from the Linux kernel by introducing vhost_ops. The
intention is to provide different backends - a 'kernel' backend based on
the ioctl interface, and an 'user' backend based on a UNIX domain socket
and shared memory interface.

Signed-off-by: Antonios Motakis <a.motakis@virtualopensystems.com>
Signed-off-by: Nikolay Nikolaev <n.nikolaev@virtualopensystems.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
 hw/net/vhost_net.c | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

(limited to 'hw/net/vhost_net.c')

diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index 7a5523f36a..402f37e8cc 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -27,7 +27,6 @@
 #include <sys/socket.h>
 #include <linux/kvm.h>
 #include <fcntl.h>
-#include <sys/ioctl.h>
 #include <linux/virtio_ring.h>
 #include <netpacket/packet.h>
 #include <net/ethernet.h>
@@ -177,7 +176,8 @@ static int vhost_net_start_one(struct vhost_net *net,
     qemu_set_fd_handler(net->backend, NULL, NULL, NULL);
     file.fd = net->backend;
     for (file.index = 0; file.index < net->dev.nvqs; ++file.index) {
-        r = ioctl(net->dev.control, VHOST_NET_SET_BACKEND, &file);
+        const VhostOps *vhost_ops = net->dev.vhost_ops;
+        r = vhost_ops->vhost_call(&net->dev, VHOST_NET_SET_BACKEND, &file);
         if (r < 0) {
             r = -errno;
             goto fail;
@@ -187,7 +187,8 @@ static int vhost_net_start_one(struct vhost_net *net,
 fail:
     file.fd = -1;
     while (file.index-- > 0) {
-        int r = ioctl(net->dev.control, VHOST_NET_SET_BACKEND, &file);
+        const VhostOps *vhost_ops = net->dev.vhost_ops;
+        int r = vhost_ops->vhost_call(&net->dev, VHOST_NET_SET_BACKEND, &file);
         assert(r >= 0);
     }
     if (net->nc->info->poll) {
@@ -210,7 +211,8 @@ static void vhost_net_stop_one(struct vhost_net *net,
     }
 
     for (file.index = 0; file.index < net->dev.nvqs; ++file.index) {
-        int r = ioctl(net->dev.control, VHOST_NET_SET_BACKEND, &file);
+        const VhostOps *vhost_ops = net->dev.vhost_ops;
+        int r = vhost_ops->vhost_call(&net->dev, VHOST_NET_SET_BACKEND, &file);
         assert(r >= 0);
     }
     if (net->nc->info->poll) {
-- 
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