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qemu: Enable multiqueue network

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This commit is contained in:
Michal Privoznik 2013-04-18 10:47:01 +02:00
parent 1f24f68225
commit 03eb06632a
2 changed files with 51 additions and 16 deletions
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36
src/qemu/qemu_command.c
View File

@ -6519,14 +6519,28 @@ qemuBuildInterfaceCommandLine(virCommandPtr cmd,
if (!bootindex)
bootindex = net->info.bootIndex;
/* Currently nothing besides TAP devices supports multiqueue. */
if (net->driver.virtio.queues > 0 &&
!(actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Multiqueue network is not supported for: %s"),
virDomainNetTypeToString(actualType));
return -1;
}
if (actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE) {
if (VIR_ALLOC(tapfd) < 0 || VIR_ALLOC(tapfdName) < 0) {
tapfdSize = net->driver.virtio.queues;
if (!tapfdSize)
tapfdSize = 1;
if (VIR_ALLOC_N(tapfd, tapfdSize) < 0 ||
VIR_ALLOC_N(tapfdName, tapfdSize) < 0) {
virReportOOMError();
goto cleanup;
}
tapfdSize = 1;
if (qemuNetworkIfaceConnect(def, conn, driver, net,
qemuCaps, tapfd, &tapfdSize) < 0)
goto cleanup;
@ -6548,11 +6562,15 @@ qemuBuildInterfaceCommandLine(virCommandPtr cmd,
actualType == VIR_DOMAIN_NET_TYPE_DIRECT) {
/* Attempt to use vhost-net mode for these types of
network device */
if (VIR_ALLOC(vhostfd) < 0 || VIR_ALLOC(vhostfdName)) {
vhostfdSize = net->driver.virtio.queues;
if (!vhostfdSize)
vhostfdSize = 1;
if (VIR_ALLOC_N(vhostfd, vhostfdSize) < 0 ||
VIR_ALLOC_N(vhostfdName, vhostfdSize)) {
virReportOOMError();
goto cleanup;
}
vhostfdSize = 1;
if (qemuOpenVhostNet(def, net, qemuCaps, vhostfd, &vhostfdSize) < 0)
goto cleanup;
@ -6616,15 +6634,17 @@ qemuBuildInterfaceCommandLine(virCommandPtr cmd,
cleanup:
if (ret < 0)
virDomainConfNWFilterTeardown(net);
for (i = 0; i < tapfdSize; i++) {
for (i = 0; tapfd && i < tapfdSize; i++) {
if (ret < 0)
VIR_FORCE_CLOSE(tapfd[i]);
VIR_FREE(tapfdName[i]);
if (tapfdName)
VIR_FREE(tapfdName[i]);
}
for (i = 0; i < vhostfdSize; i++) {
for (i = 0; vhostfd && i < vhostfdSize; i++) {
if (ret < 0)
VIR_FORCE_CLOSE(vhostfd[i]);
VIR_FREE(vhostfdName[i]);
if (vhostfdName)
VIR_FREE(vhostfdName[i]);
}
VIR_FREE(tapfd);
VIR_FREE(vhostfd);

31
src/qemu/qemu_hotplug.c
View File

@ -740,13 +740,26 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
goto cleanup;
}
/* Currently nothing besides TAP devices supports multiqueue. */
if (net->driver.virtio.queues > 0 &&
!(actualType == VIR_DOMAIN_NET_TYPE_NETWORK ||
actualType == VIR_DOMAIN_NET_TYPE_BRIDGE)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Multiqueue network is not supported for: %s"),
virDomainNetTypeToString(actualType));
return -1;
}
if (actualType == VIR_DOMAIN_NET_TYPE_BRIDGE ||
actualType == VIR_DOMAIN_NET_TYPE_NETWORK) {
if (VIR_ALLOC(tapfd) < 0 || VIR_ALLOC(vhostfd) < 0) {
tapfdSize = vhostfdSize = net->driver.virtio.queues;
if (!tapfdSize)
tapfdSize = vhostfdSize = 1;
if (VIR_ALLOC_N(tapfd, tapfdSize) < 0 ||
VIR_ALLOC_N(vhostfd, vhostfdSize) < 0) {
virReportOOMError();
goto cleanup;
}
tapfdSize = vhostfdSize = 1;
if (qemuNetworkIfaceConnect(vm->def, conn, driver, net,
priv->qemuCaps, tapfd, &tapfdSize) < 0)
goto cleanup;
@ -754,11 +767,11 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
if (qemuOpenVhostNet(vm->def, net, priv->qemuCaps, vhostfd, &vhostfdSize) < 0)
goto cleanup;
} else if (actualType == VIR_DOMAIN_NET_TYPE_DIRECT) {
tapfdSize = vhostfdSize = 1;
if (VIR_ALLOC(tapfd) < 0 || VIR_ALLOC(vhostfd) < 0) {
virReportOOMError();
goto cleanup;
}
tapfdSize = vhostfdSize = 1;
if ((tapfd[0] = qemuPhysIfaceConnect(vm->def, driver, net,
priv->qemuCaps,
VIR_NETDEV_VPORT_PROFILE_OP_CREATE)) < 0)
@ -767,11 +780,11 @@ int qemuDomainAttachNetDevice(virConnectPtr conn,
if (qemuOpenVhostNet(vm->def, net, priv->qemuCaps, vhostfd, &vhostfdSize) < 0)
goto cleanup;
} else if (actualType == VIR_DOMAIN_NET_TYPE_ETHERNET) {
vhostfdSize = 1;
if (VIR_ALLOC(vhostfd) < 0) {
virReportOOMError();
goto cleanup;
}
vhostfdSize = 1;
if (qemuOpenVhostNet(vm->def, net, priv->qemuCaps, vhostfd, &vhostfdSize) < 0)
goto cleanup;
}
@ -961,15 +974,17 @@ cleanup:
VIR_FREE(nicstr);
VIR_FREE(netstr);
for (i = 0; i < tapfdSize; i++) {
for (i = 0; tapfd && i < tapfdSize; i++) {
VIR_FORCE_CLOSE(tapfd[i]);
VIR_FREE(tapfdName[i]);
if (tapfdName)
VIR_FREE(tapfdName[i]);
}
VIR_FREE(tapfd);
VIR_FREE(tapfdName);
for (i = 0; i < vhostfdSize; i++) {
for (i = 0; vhostfd && i < vhostfdSize; i++) {
VIR_FORCE_CLOSE(vhostfd[i]);
VIR_FREE(vhostfdName[i]);
if (vhostfdName)
VIR_FREE(vhostfdName[i]);
}
VIR_FREE(vhostfd);
VIR_FREE(vhostfdName);