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[Qemu-devel] [PATCH v4 2/5] vhost: reset vhost net when virtio_net_reset
From: |
Yuanhan Liu |
Subject: |
[Qemu-devel] [PATCH v4 2/5] vhost: reset vhost net when virtio_net_reset happens |
Date: |
Wed, 11 Nov 2015 21:24:38 +0800 |
When a virtio net driver is unloaded (unbind), virtio_net_reset happens.
For vhost net, we should also send a message (RESET_OWNER) to the backend
to do some proper reset settings.
Signed-off-by: Yuanhan Liu <address@hidden>
---
hw/net/vhost_net.c | 20 ++++++++++++++------
hw/net/virtio-net.c | 14 ++++++++++++++
include/net/vhost_net.h | 1 +
3 files changed, 29 insertions(+), 6 deletions(-)
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index d91b7b1..387f851 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -292,12 +292,6 @@ static void vhost_net_stop_one(struct vhost_net *net,
int r = vhost_ops->vhost_net_set_backend(&net->dev, &file);
assert(r >= 0);
}
- } else if (net->nc->info->type == NET_CLIENT_OPTIONS_KIND_VHOST_USER) {
- for (file.index = 0; file.index < net->dev.nvqs; ++file.index) {
- const VhostOps *vhost_ops = net->dev.vhost_ops;
- int r = vhost_ops->vhost_reset_device(&net->dev);
- assert(r >= 0);
- }
}
if (net->nc->info->poll) {
net->nc->info->poll(net->nc, true);
@@ -382,6 +376,16 @@ void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs,
assert(vhost_net_set_vnet_endian(dev, ncs[0].peer, false) >= 0);
}
+void vhost_net_reset(VirtIODevice *vdev)
+{
+ VirtIONet *n = VIRTIO_NET(vdev);
+ struct vhost_net *net = get_vhost_net(n->nic->ncs[0].peer);
+
+ if (net->nc->info->type == NET_CLIENT_OPTIONS_KIND_VHOST_USER) {
+ net->dev.vhost_ops->vhost_reset_device(&net->dev);
+ }
+}
+
void vhost_net_cleanup(struct vhost_net *net)
{
vhost_dev_cleanup(&net->dev);
@@ -469,6 +473,10 @@ void vhost_net_stop(VirtIODevice *dev,
{
}
+void vhost_net_reset(VirtIODevice *vdev)
+{
+}
+
void vhost_net_cleanup(struct vhost_net *net)
{
}
diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c
index a877614..75472ba 100644
--- a/hw/net/virtio-net.c
+++ b/hw/net/virtio-net.c
@@ -318,10 +318,24 @@ static RxFilterInfo
*virtio_net_query_rxfilter(NetClientState *nc)
return info;
}
+static void virtio_net_vhost_reset(VirtIONet *n)
+{
+ VirtIODevice *vdev = VIRTIO_DEVICE(n);
+ NetClientState *nc = qemu_get_queue(n->nic);
+
+ if (!get_vhost_net(nc->peer)) {
+ return;
+ }
+
+ vhost_net_reset(vdev);
+}
+
static void virtio_net_reset(VirtIODevice *vdev)
{
VirtIONet *n = VIRTIO_NET(vdev);
+ virtio_net_vhost_reset(n);
+
/* Reset back to compatibility mode */
n->promisc = 1;
n->allmulti = 0;
diff --git a/include/net/vhost_net.h b/include/net/vhost_net.h
index 3389b41..d1c1331 100644
--- a/include/net/vhost_net.h
+++ b/include/net/vhost_net.h
@@ -18,6 +18,7 @@ struct vhost_net *vhost_net_init(VhostNetOptions *options);
int vhost_net_start(VirtIODevice *dev, NetClientState *ncs, int total_queues);
void vhost_net_stop(VirtIODevice *dev, NetClientState *ncs, int total_queues);
+void vhost_net_reset(VirtIODevice *dev);
void vhost_net_cleanup(VHostNetState *net);
--
1.9.0
- [Qemu-devel] [PATCH v4 0/5] handle vhost reset/start/stop correctly, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 3/5] vhost: introduce vhost_set/get_protocol_features callbacks, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 2/5] vhost: reset vhost net when virtio_net_reset happens,
Yuanhan Liu <=
- [Qemu-devel] [PATCH v4 1/5] vhost: rename RESET_DEVICE backto RESET_OWNER, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 4/5] vhost: send SET_PROTOCOL_FEATURES at start, Yuanhan Liu, 2015/11/11
- [Qemu-devel] [PATCH v4 5/5] vhost: send SET_VRING_ENABLE at start/stop, Yuanhan Liu, 2015/11/11
- Re: [Qemu-devel] [PATCH v4 0/5] handle vhost reset/start/stop correctly, Michael S. Tsirkin, 2015/11/12