[libvirt] [PATCH 25/34] Convert NICs over to use -device & -netdev where possible
Daniel Veillard
veillard at redhat.com
Fri Jan 15 17:09:09 UTC 2010
On Fri, Jan 08, 2010 at 05:23:21PM +0000, Daniel P. Berrange wrote:
> The current syntax uses a pair of args
>
> -net nic,macaddr=52:54:00:56:6c:55,vlan=3,model=pcnet,name=pcnet.0
> -net user,vlan=3,name=user.0
>
> The new syntax does not need the vlan craziness anymore, and
> so has a simplified pair of args
>
> -netdev user,id=user.0
> -device pcnet,netdev=user.0,id=pcnet.0,mac=52:54:00:56:6c:55,addr=<PCI SLOT>
> ---
> src/qemu/qemu_conf.c | 175 ++++++++++++++++----
> .../qemuxml2argv-net-virtio-device.args | 1 +
> .../qemuxml2argv-net-virtio-device.xml | 26 +++
> tests/qemuxml2argvtest.c | 1 +
> 4 files changed, 174 insertions(+), 29 deletions(-)
> create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-device.args
> create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-device.xml
>
> diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
> index 8b8455d..709c3f4 100644
> --- a/src/qemu/qemu_conf.c
> +++ b/src/qemu/qemu_conf.c
> @@ -1488,6 +1488,8 @@ qemuAssignDeviceAliases(virDomainDefPtr def)
> if (virAsprintf(&def->nets[i]->info.alias, "nic%d", i) < 0)
> goto no_memory;
> }
> + if (virAsprintf(&def->nets[i]->hostnet_name, "netdev%d", i) < 0)
> + goto no_memory;
> }
>
> for (i = 0; i < def->nsounds ; i++) {
> @@ -2021,6 +2023,41 @@ qemuBuildNicStr(virConnectPtr conn,
> return 0;
> }
>
> +static char *
> +qemuBuildNicDevStr(virDomainNetDefPtr net)
> +{
> + virBuffer buf = VIR_BUFFER_INITIALIZER;
> + const char *nic;
> +
> + if (!net->model) {
> + nic = "rtl8139";
> + } else if (STREQ(net->model, "virtio")) {
> + nic = "virtio-net-pci";
> + } else {
> + nic = net->model;
> + }
> +
> + virBufferVSprintf(&buf, "%s,netdev=%s", nic, net->hostnet_name);
> + virBufferVSprintf(&buf, ",id=%s", net->info.alias);
> + virBufferVSprintf(&buf, ",mac=%02x:%02x:%02x:%02x:%02x:%02x",
> + net->mac[0], net->mac[1],
> + net->mac[2], net->mac[3],
> + net->mac[4], net->mac[5]);
> + if (qemuBuildDeviceAddressStr(&buf, &net->info) < 0)
> + goto error;
> +
> + if (virBufferError(&buf)) {
> + virReportOOMError(NULL);
> + goto error;
> + }
> +
> + return virBufferContentAndReset(&buf);
> +
> +error:
> + virBufferFreeAndReset(&buf);
> + return NULL;
> +}
> +
> int
> qemuBuildHostNetStr(virConnectPtr conn,
> virDomainNetDefPtr net,
> @@ -2118,6 +2155,88 @@ qemuBuildHostNetStr(virConnectPtr conn,
> }
>
>
> +static int
> +qemuBuildNetDevStr(virConnectPtr conn,
> + virDomainNetDefPtr net,
> + const char *tapfd,
> + char **str)
> +{
> + switch (net->type) {
> + case VIR_DOMAIN_NET_TYPE_NETWORK:
> + case VIR_DOMAIN_NET_TYPE_BRIDGE:
> + if (virAsprintf(str, "tap,fd=%s,id=%s",
> + tapfd, net->hostnet_name) < 0) {
> + virReportOOMError(conn);
> + return -1;
> + }
> + break;
> +
> + case VIR_DOMAIN_NET_TYPE_ETHERNET:
> + {
> + virBuffer buf = VIR_BUFFER_INITIALIZER;
> +
> + virBufferAddLit(&buf, "tap");
> + if (net->ifname)
> + virBufferVSprintf(&buf, ",ifname=%s", net->ifname);
> + if (net->data.ethernet.script)
> + virBufferVSprintf(&buf, ",script=%s",
> + net->data.ethernet.script);
> + if (net->hostnet_name)
> + virBufferVSprintf(&buf, ",id=%s",
> + net->hostnet_name);
> + if (virBufferError(&buf)) {
> + virBufferFreeAndReset(&buf);
> + virReportOOMError(conn);
> + return -1;
> + }
> +
> + *str = virBufferContentAndReset(&buf);
> + }
> + break;
> +
> + case VIR_DOMAIN_NET_TYPE_CLIENT:
> + case VIR_DOMAIN_NET_TYPE_SERVER:
> + case VIR_DOMAIN_NET_TYPE_MCAST:
> + {
> + const char *mode = NULL;
> +
> + switch (net->type) {
> + case VIR_DOMAIN_NET_TYPE_CLIENT:
> + mode = "connect";
> + break;
> + case VIR_DOMAIN_NET_TYPE_SERVER:
> + mode = "listen";
> + break;
> + case VIR_DOMAIN_NET_TYPE_MCAST:
> + mode = "mcast";
> + break;
> + }
> +
> + if (virAsprintf(str, "socket,%s=%s:%d,id=%s",
> + mode,
> + net->data.socket.address,
> + net->data.socket.port,
> + net->hostnet_name) < 0) {
> + virReportOOMError(conn);
> + return -1;
> + }
> + }
> + break;
> +
> + case VIR_DOMAIN_NET_TYPE_USER:
> + default:
> + if (virAsprintf(str, "user,id=%s",
> + net->hostnet_name) < 0) {
> + virReportOOMError(conn);
> + return -1;
> + }
> + break;
> + }
> +
> + return 0;
> +}
> +
> +
> static char *qemuBuildWatchdogDevStr(virDomainWatchdogDefPtr dev)
> {
> virBuffer buf = VIR_BUFFER_INITIALIZER;
> @@ -2961,27 +3080,10 @@ int qemudBuildCommandLine(virConnectPtr conn,
> for (i = 0 ; i < def->nnets ; i++) {
> virDomainNetDefPtr net = def->nets[i];
> char *nic, *host;
> - char *tapfd_name = NULL;
> + char tapfd_name[50];
>
> net->vlan = i;
>
> - ADD_ARG_SPACE;
> - if ((qemuCmdFlags & QEMUD_CMD_FLAG_NET_NAME) &&
> - !(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) &&
> - qemuAssignNetNames(def, net) < 0)
> - goto no_memory;
> -
> - if (qemuBuildNicStr(conn, net, "nic,", net->vlan, &nic) < 0)
> - goto error;
> -
> - if ((qargv[qargc++] = strdup("-net")) == NULL) {
> - VIR_FREE(nic);
> - goto no_memory;
> - }
> - ADD_ARG(nic);
> -
> -
> - ADD_ARG_SPACE;
> if (net->type == VIR_DOMAIN_NET_TYPE_NETWORK ||
> net->type == VIR_DOMAIN_NET_TYPE_BRIDGE) {
> int tapfd = qemudNetworkIfaceConnect(conn, driver, net, qemuCmdFlags);
> @@ -2995,23 +3097,38 @@ int qemudBuildCommandLine(virConnectPtr conn,
>
> (*tapfds)[(*ntapfds)++] = tapfd;
>
> - if (virAsprintf(&tapfd_name, "%d", tapfd) < 0)
> + if (snprintf(tapfd_name, sizeof(tapfd_name), "%d", tapfd) >= sizeof(tapfd_name))
> goto no_memory;
> }
>
> - if (qemuBuildHostNetStr(conn, net, ',',
> - net->vlan, tapfd_name, &host) < 0) {
> - VIR_FREE(tapfd_name);
> - goto error;
> + if ((qemuCmdFlags & QEMUD_CMD_FLAG_NET_NAME) &&
> + !(qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE)) {
> + if (qemuAssignNetNames(def, net) < 0)
> + goto no_memory;
> }
>
> - if ((qargv[qargc++] = strdup("-net")) == NULL) {
> - VIR_FREE(host);
> - goto no_memory;
> - }
> - ADD_ARG(host);
> + if (qemuCmdFlags & QEMUD_CMD_FLAG_DEVICE) {
> + ADD_ARG_LIT("-netdev");
> + if (qemuBuildNetDevStr(conn, net, tapfd_name, &host) < 0)
> + goto error;
> + ADD_ARG(host);
>
> - VIR_FREE(tapfd_name);
> + ADD_ARG_LIT("-device");
> + if (!(nic = qemuBuildNicDevStr(net)))
> + goto error;
> + ADD_ARG(nic);
> + } else {
> + ADD_ARG_LIT("-net");
> + if (qemuBuildNicStr(conn, net, "nic,", net->vlan, &nic) < 0)
> + goto error;
> + ADD_ARG(nic);
> +
> + ADD_ARG_LIT("-net");
> + if (qemuBuildHostNetStr(conn, net, ',',
> + net->vlan, tapfd_name, &host) < 0)
> + goto error;
> + ADD_ARG(host);
> + }
> }
> }
>
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-device.args b/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-device.args
> new file mode 100644
> index 0000000..2b5e856
> --- /dev/null
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-device.args
> @@ -0,0 +1 @@
> +LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M pc -m 214 -smp 1 -nographic -nodefaults -monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -hda /dev/HostVG/QEMUGuest1 -netdev user,id=netdev0 -device virtio-net-pci,netdev=netdev0,id=virtio-nic0,mac=00:11:22:33:44:55 -usb
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-device.xml b/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-device.xml
> new file mode 100644
> index 0000000..5d34bd4
> --- /dev/null
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-net-virtio-device.xml
> @@ -0,0 +1,26 @@
> +<domain type='qemu'>
> + <name>QEMUGuest1</name>
> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
> + <memory>219200</memory>
> + <currentMemory>219200</currentMemory>
> + <vcpu>1</vcpu>
> + <os>
> + <type arch='i686' machine='pc'>hvm</type>
> + <boot dev='hd'/>
> + </os>
> + <clock offset='utc'/>
> + <on_poweroff>destroy</on_poweroff>
> + <on_reboot>restart</on_reboot>
> + <on_crash>destroy</on_crash>
> + <devices>
> + <emulator>/usr/bin/qemu</emulator>
> + <disk type='block' device='disk'>
> + <source dev='/dev/HostVG/QEMUGuest1'/>
> + <target dev='hda' bus='ide'/>
> + </disk>
> + <interface type='user'>
> + <mac address='00:11:22:33:44:55'/>
> + <model type='virtio'/>
> + </interface>
> + </devices>
> +</domain>
> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
> index 55e7d58..645f6b4 100644
> --- a/tests/qemuxml2argvtest.c
> +++ b/tests/qemuxml2argvtest.c
> @@ -260,6 +260,7 @@ mymain(int argc, char **argv)
> QEMUD_CMD_FLAG_UUID);
> DO_TEST("net-user", 0);
> DO_TEST("net-virtio", 0);
> + DO_TEST("net-virtio-device", QEMUD_CMD_FLAG_DEVICE);
> DO_TEST("net-eth", 0);
> DO_TEST("net-eth-ifname", 0);
> DO_TEST("net-eth-names", QEMUD_CMD_FLAG_NET_NAME);
ACK, separating the functions looks really better too
Daniel
--
Daniel Veillard | libxml Gnome XML XSLT toolkit http://xmlsoft.org/
daniel at veillard.com | Rpmfind RPM search engine http://rpmfind.net/
http://veillard.com/ | virtualization library http://libvirt.org/
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