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qemu: support vhost-net for generic ethernet devices

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From qemu's point of view these are still just tap devices, so there's
no reason they shouldn't work with vhost-net; as a matter of fact,
Raja Sivaramakrishnan <srajag00@yahoo.com> verified on libvir-list
that at least the qemu_command.c part of this patch works:

  https://www.redhat.com/archives/libvir-list/2012-December/msg01314.html

(the hotplug case is extrapolation on my part).
This commit is contained in:
Laine Stump 2013-02-08 12:19:09 -05:00
parent a6cfed260b
commit 66d9bc00ab
2 changed files with 4 additions and 0 deletions
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1
src/qemu/qemu_command.c
View File

@ -6159,6 +6159,7 @@ qemuBuildCommandLine(virConnectPtr conn,
if (actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE ||
actualType == VIR_DOMAIN_NET_TYPE_ETHERNET ||
actualType == VIR_DOMAIN_NET_TYPE_DIRECT) {
/* Attempt to use vhost-net mode for these types of
network device */

3
src/qemu/qemu_hotplug.c
View File

@ -754,6 +754,9 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
iface_connected = true;
if (qemuOpenVhostNet(vm->def, net, priv->qemuCaps, &vhostfd) < 0)
goto cleanup;
} else if (actualType == VIR_DOMAIN_NET_TYPE_ETHERNET) {
if (qemuOpenVhostNet(vm->def, net, priv->qemuCaps, &vhostfd) < 0)
goto cleanup;
}
if (virQEMUCapsGet(priv->qemuCaps, QEMU_CAPS_NET_NAME) ||