From: Luke Gorrie <[email protected]>
Ensure that the vhost-user slave knows when the vrings are valid and
when they are invalid, for example during a guest reboot.
The vhost-user protocol says this of VHOST_RESET_OWNER:
Issued when a new connection is about to be closed. The Master
will no longer own this connection (and will usually close it).
Send this message to tell the vhost-user slave that the vhost session
has ended and that session state (e.g. vrings) is no longer valid.
Signed-off-by: Luke Gorrie <[email protected]>
Reviewed-by: Michael S. Tsirkin <[email protected]>
Signed-off-by: Michael S. Tsirkin <[email protected]>
---
hw/net/vhost_net.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/hw/net/vhost_net.c b/hw/net/vhost_net.c
index cf23335..47f8b89 100644
--- a/hw/net/vhost_net.c
+++ b/hw/net/vhost_net.c
@@ -263,6 +263,13 @@ static void vhost_net_stop_one(struct vhost_net *net,
&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_call(&net->dev, VHOST_RESET_OWNER,
+ NULL);
+ assert(r >= 0);
+ }
}
if (net->nc->info->poll) {
net->nc->info->poll(net->nc, true);
--
MST
