[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-devel] [PULL 04/28] vhost-user: Send VHOST_RESET_OWNER on vhost st

From: Michael S. Tsirkin
Subject: [Qemu-devel] [PULL 04/28] vhost-user: Send VHOST_RESET_OWNER on vhost stop
Date: Mon, 11 May 2015 14:47:08 +0200

From: Luke Gorrie <address@hidden>

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has ended and that session state (e.g. vrings) is no longer valid.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 <address@hidden>
Reviewed-by: Michael S. Tsirkin <address@hidden>
Signed-off-by: Michael S. Tsirkin <address@hidden>
 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,
             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);

reply via email to

[Prev in Thread] Current Thread [Next in Thread]