[libvirt] PATCH: Include port number with virtio serial devices
Cole Robinson
crobinso at redhat.com
Thu Jun 3 14:00:46 UTC 2010
On 06/03/2010 08:54 AM, Daniel P. Berrange wrote:
> To ensure that the device addressing scheme is stable across
> hotplug/unplug, all virtio serial channels needs to have an
> associated port number in their address. This is then specified
> to QEMU using the nr=NNN parameter
>
> * src/conf/domain_conf.c, src/conf/domain_conf.h: Parsing
> for port number in vioserial address types.
> * src/qemu/qemu_conf.c: Set 'nr=NNN' parameter with virtio
> serial port number
> * tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args,
> tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.xml: Expand
> data set to ensure coverage of port addressing
> ---
> src/conf/domain_conf.c | 30 ++++++++++++++++++--
> src/conf/domain_conf.h | 1 +
> src/qemu/qemu_conf.c | 3 ++
> .../qemuxml2argv-channel-virtio.args | 2 +-
> .../qemuxml2argv-channel-virtio.xml | 14 ++++++++-
> 5 files changed, 45 insertions(+), 5 deletions(-)
>
> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
> index 312a6c0..a9b01d5 100644
> --- a/src/conf/domain_conf.c
> +++ b/src/conf/domain_conf.c
> @@ -1055,9 +1055,10 @@ static int virDomainDeviceInfoFormat(virBufferPtr buf,
> break;
>
> case VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL:
> - virBufferVSprintf(buf, " controller='%d' bus='%d'",
> + virBufferVSprintf(buf, " controller='%d' bus='%d' port='%d'",
> info->addr.vioserial.controller,
> - info->addr.vioserial.bus);
> + info->addr.vioserial.bus,
> + info->addr.vioserial.port);
> break;
>
> default:
> @@ -1190,13 +1191,14 @@ virDomainDeviceVirtioSerialAddressParseXML(
> virDomainDeviceVirtioSerialAddressPtr addr
> )
> {
> - char *controller, *bus;
> + char *controller, *bus, *port;
> int ret = -1;
>
> memset(addr, 0, sizeof(*addr));
>
> controller = virXMLPropString(node, "controller");
> bus = virXMLPropString(node, "bus");
> + port = virXMLPropString(node, "port");
>
> if (controller &&
> virStrToLong_ui(controller, NULL, 10, &addr->controller) < 0) {
> @@ -1212,6 +1214,13 @@ virDomainDeviceVirtioSerialAddressParseXML(
> goto cleanup;
> }
>
> + if (port &&
> + virStrToLong_ui(port, NULL, 10, &addr->port) < 0) {
> + virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> + _("Cannot parse <address> 'port' attribute"));
> + goto cleanup;
> + }
> +
> if (!virDomainDeviceVirtioSerialAddressIsValid(addr)) {
> virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s",
> _("Insufficient specification for "
> @@ -4375,6 +4384,21 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps,
> goto error;
>
> def->channels[def->nchannels++] = chr;
> +
> + if (chr->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL &&
> + chr->info.addr.vioserial.port == 0) {
> + int maxport = -1;
> + int j;
> + for (j = 0 ; j < i ; j++) {
> + virDomainChrDefPtr thischr = def->channels[j];
> + if (thischr->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_VIRTIO_SERIAL &&
> + thischr->info.addr.vioserial.controller == chr->info.addr.vioserial.controller &&
> + thischr->info.addr.vioserial.bus == chr->info.addr.vioserial.bus &&
> + (int)thischr->info.addr.vioserial.port > maxport)
> + maxport = thischr->info.addr.vioserial.port;
> + }
> + chr->info.addr.vioserial.port = maxport + 1;
> + }
> }
> VIR_FREE(nodes);
>
> diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
> index f87f6c8..f83de83 100644
> --- a/src/conf/domain_conf.h
> +++ b/src/conf/domain_conf.h
> @@ -98,6 +98,7 @@ typedef virDomainDeviceVirtioSerialAddress *virDomainDeviceVirtioSerialAddressPt
> struct _virDomainDeviceVirtioSerialAddress {
> unsigned int controller;
> unsigned int bus;
> + unsigned int port;
> };
>
> typedef struct _virDomainDeviceInfo virDomainDeviceInfo;
> diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c
> index 511b9de..5521dbe 100644
> --- a/src/qemu/qemu_conf.c
> +++ b/src/qemu/qemu_conf.c
> @@ -3312,6 +3312,9 @@ qemuBuildVirtioSerialPortDevStr(virDomainChrDefPtr dev)
> ",bus=" QEMU_VIRTIO_SERIAL_PREFIX "%d.%d",
> dev->info.addr.vioserial.controller,
> dev->info.addr.vioserial.bus);
> + virBufferVSprintf(&buf,
> + ",nr=%d",
> + dev->info.addr.vioserial.port);
> }
>
> virBufferVSprintf(&buf, ",chardev=%s", dev->info.alias);
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
> index 4097065..8e5fbe2 100644
> --- a/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.args
> @@ -1 +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 -device virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=4,bus=pci.0,addr=0x4 -device virtio-serial-pci,id=virtio-serial1,bus=pci.0,addr=0xa -hda /dev/HostVG/QEMUGuest1 -chardev pty,id=channel0 -device virtserialport,chardev=channel0,name=org.linux-kvm.port.0 -chardev pty,id=channel1 -device virtserialport,bus=virtio-serial1.0,chardev=channel1,name=org.linux-kvm.port.1 -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
> +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 -device virtio-serial-pci,id=virtio-serial0,max_ports=16,vectors=4,bus=pci.0,addr=0x4 -device virtio-serial-pci,id=virtio-serial1,bus=pci.0,addr=0xa -hda /dev/HostVG/QEMUGuest1 -chardev pty,id=channel0 -device virtserialport,chardev=channel0,name=org.linux-kvm.port.0 -chardev pty,id=channel1 -device virtserialport,bus=virtio-serial1.0,nr=0,chardev=channel1,name=org.linux-kvm.port.foo -chardev pty,id=channel2 -device virtserialport,bus=virtio-serial1.0,nr=3,chardev=channel2,name=org.linux-kvm.port.bar -chardev pty,id=channel3 -device virtserialport,bus=virtio-serial0.0,nr=0,chardev=channel3,name=org.linux-kvm.port.wizz -chardev pty,id=channel4 -device virtserialport,bus=virtio-serial1.0,nr=4,chardev=channel4,name=org.linux-kvm.port.ooh -usb -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x
3
> diff --git a/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.xml b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.xml
> index 6c3317b..04a3e1c 100644
> --- a/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.xml
> +++ b/tests/qemuxml2argvdata/qemuxml2argv-channel-virtio.xml
> @@ -28,7 +28,19 @@
> <target type='virtio' name='org.linux-kvm.port.0'/>
> </channel>
> <channel type='pty'>
> - <target type='virtio' name='org.linux-kvm.port.1'/>
> + <target type='virtio' name='org.linux-kvm.port.foo'/>
> + <address type='virtio-serial' controller='1' bus='0'/>
> + </channel>
> + <channel type='pty'>
> + <target type='virtio' name='org.linux-kvm.port.bar'/>
> + <address type='virtio-serial' controller='1' bus='0' port='3'/>
> + </channel>
> + <channel type='pty'>
> + <target type='virtio' name='org.linux-kvm.port.wizz'/>
> + <address type='virtio-serial' controller='0' bus='0'/>
> + </channel>
> + <channel type='pty'>
> + <target type='virtio' name='org.linux-kvm.port.ooh'/>
> <address type='virtio-serial' controller='1' bus='0'/>
> </channel>
> </devices>
ACK
- Cole
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