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qemu: complete vhostuser + passt support

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<interface type='vhostuser'><backend type='passt'/> needs to run the
passt command just as is done for interface type='user', but then add
vhostuser bits to the qemu commandline/monitor command.

There are some changes to the parsing/validation along with changes to
the vhostuser codepath do do the extra stuff for passt. I tried
keeping them separated into different patches, but then the unit test
failed in a strange way deep down in the bowels of the commandline
generation, so this patch both 1) makes the final changes to
parsing/formatting and 2) adds passt stuff at appropriate places for
vhostuser (as well as making a couple of things *not* happen when the
passt backend is chosen). The result is that you can now have:

    <interface type='vhostuser'>
      <backend type='passt'/>
      ...
    </interface>

Then as long as you also have the following as a subelement of
<domain>:

    <memoryBacking>
      <access mode='shared'/>
    </memoryBacking>

your passt interfaces will benefit from the greatly improved
efficiency of a vhost-user data path, and all without requiring
special privileges or capabilities *anywhere* (i.e. it works for
unprivileged libvirt (qemu:///session) as well as privileged libvirt).

Resolves: https://issues.redhat.com/browse/RHEL-69455
Signed-off-by: Laine Stump <laine@redhat.com>
Reviewed-by: Ján Tomko <jtomko@redhat.com>
This commit is contained in:
Laine Stump 2025-02-12 16:16:44 -05:00
parent 7b7c56c3b8
commit 1e9054b9c7
14 changed files with 319 additions and 76 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/conf/domain_conf.c
View File

@ -9457,9 +9457,25 @@ virDomainNetBackendParseXML(xmlNodePtr node,
g_autofree char *tap = virXMLPropString(node, "tap");
g_autofree char *vhost = virXMLPropString(node, "vhost");
/* The VIR_DOMAIN_NET_BACKEND_DEFAULT really means 'use hypervisor's
* builtin SLIRP'. It's reported in domain caps and thus we need to accept
* it. Hence VIR_XML_PROP_NONE instead of VIR_XML_PROP_NONZERO. */
/* In the case of NET_TYPE_USER, backend type can be unspecified
* (i.e. VIR_DOMAIN_NET_BACKEND_DEFAULT) and that means 'use
* hypervisor's builtin SLIRP (or if that isn't available, use
* passt)'. Similarly, it can also be left unspecified in the case
* of NET_TYPE_VHOSTUSER, and then it means "use the traditional
* vhost-user backend (which auto-detects between connecting to a
* socket created by OVS, or connecting to a standalone socket
* used (mostly in testing) to connect the vhost-user interface of
* one guest directly to the vhost-user interface of another
* guest.
*
* If backend type is set to 'passt', then in both cases a passt
* process will be started, and libvirt will connect that to the
* guest interface (either communicating everything over the
* socket created by passt using a specific-to-passt protocol
* (interface type='user'>), or by using the socket for control
* plane messages and shared memory for data using the vhost-user
* protocol (<interface type='vhostuser'>)).
*/
if (virXMLPropEnum(node, "type", virDomainNetBackendTypeFromString,
VIR_XML_PROP_NONE, &def->backend.type) < 0) {
return -1;
@ -24616,7 +24632,11 @@ virDomainNetDefFormat(virBuffer *buf,
break;
case VIR_DOMAIN_NET_TYPE_VHOSTUSER:
if (def->data.vhostuser->type == VIR_DOMAIN_CHR_TYPE_UNIX) {
if (def->data.vhostuser->type == VIR_DOMAIN_CHR_TYPE_UNIX &&
def->backend.type != VIR_DOMAIN_NET_BACKEND_PASST) {
/* in the case of BACKEND_PASST, the values of all of these are either
* fixed (type, mode, reconnect), or derived from elsewhere (path)
*/
virBufferAddLit(&sourceAttrBuf, " type='unix'");
virBufferEscapeString(&sourceAttrBuf, " path='%s'",
def->data.vhostuser->data.nix.path);
@ -24627,7 +24647,6 @@ virDomainNetDefFormat(virBuffer *buf,
virDomainChrSourceReconnectDefFormat(&sourceChildBuf,
&def->data.vhostuser->data.nix.reconnect);
}
}
break;
@ -24689,15 +24708,14 @@ virDomainNetDefFormat(virBuffer *buf,
}
case VIR_DOMAIN_NET_TYPE_USER:
if (def->backend.type == VIR_DOMAIN_NET_BACKEND_PASST)
virBufferEscapeString(&sourceAttrBuf, " dev='%s'", def->sourceDev);
break;
case VIR_DOMAIN_NET_TYPE_NULL:
case VIR_DOMAIN_NET_TYPE_LAST:
break;
}
if (def->backend.type == VIR_DOMAIN_NET_BACKEND_PASST)
virBufferEscapeString(&sourceAttrBuf, " dev='%s'", def->sourceDev);
if (def->hostIP.nips || def->hostIP.nroutes) {
if (virDomainNetIPInfoFormat(&sourceChildBuf, &def->hostIP) < 0)
return -1;

81
src/conf/domain_validate.c
View File

@ -2163,69 +2163,48 @@ virDomainNetDefValidate(const virDomainNetDef *net)
return -1;
}
if (net->type != VIR_DOMAIN_NET_TYPE_USER) {
if (net->type != VIR_DOMAIN_NET_TYPE_USER &&
net->type != VIR_DOMAIN_NET_TYPE_VHOSTUSER) {
if (net->backend.type == VIR_DOMAIN_NET_BACKEND_PASST) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("The 'passt' backend can only be used with interface type='user'"));
_("The 'passt' backend can only be used with interface type='user' or type='vhostuser'"));
return -1;
}
}
if (net->nPortForwards > 0 &&
(net->type != VIR_DOMAIN_NET_TYPE_USER ||
(net->type == VIR_DOMAIN_NET_TYPE_USER &&
net->backend.type != VIR_DOMAIN_NET_BACKEND_PASST))) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("The <portForward> element can only be used with <interface type='user'> and its 'passt' backend"));
return -1;
if (net->nPortForwards > 0) {
size_t p;
if ((net->type != VIR_DOMAIN_NET_TYPE_USER &&
net->type != VIR_DOMAIN_NET_TYPE_VHOSTUSER) ||
net->backend.type != VIR_DOMAIN_NET_BACKEND_PASST) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("The <portForward> element can only be used with the 'passt' backend of interface type='user' or type='vhostuser'"));
return -1;
}
for (p = 0; p < net->nPortForwards; p++) {
size_t r;
virDomainNetPortForward *pf = net->portForwards[p];
for (r = 0; r < pf->nRanges; r++) {
virDomainNetPortForwardRange *range = pf->ranges[r];
if (!range->start
&& (range->end || range->to
|| range->exclude != VIR_TRISTATE_BOOL_ABSENT)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("The 'range' of a 'portForward' requires 'start' attribute if 'end', 'to', or 'exclude' is specified"));
return -1;
}
}
}
}
if (!virNetDevBandwidthValidate(net->bandwidth)) {
return -1;
}
switch (net->type) {
case VIR_DOMAIN_NET_TYPE_USER:
if (net->backend.type == VIR_DOMAIN_NET_BACKEND_PASST) {
size_t p;
for (p = 0; p < net->nPortForwards; p++) {
size_t r;
virDomainNetPortForward *pf = net->portForwards[p];
for (r = 0; r < pf->nRanges; r++) {
virDomainNetPortForwardRange *range = pf->ranges[r];
if (!range->start
&& (range->end || range->to
|| range->exclude != VIR_TRISTATE_BOOL_ABSENT)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("The 'range' of a 'portForward' requires 'start' attribute if 'end', 'to', or 'exclude' is specified"));
return -1;
}
}
}
}
break;
case VIR_DOMAIN_NET_TYPE_VHOSTUSER:
case VIR_DOMAIN_NET_TYPE_NETWORK:
case VIR_DOMAIN_NET_TYPE_VDPA:
case VIR_DOMAIN_NET_TYPE_BRIDGE:
case VIR_DOMAIN_NET_TYPE_CLIENT:
case VIR_DOMAIN_NET_TYPE_SERVER:
case VIR_DOMAIN_NET_TYPE_MCAST:
case VIR_DOMAIN_NET_TYPE_UDP:
case VIR_DOMAIN_NET_TYPE_INTERNAL:
case VIR_DOMAIN_NET_TYPE_DIRECT:
case VIR_DOMAIN_NET_TYPE_HOSTDEV:
case VIR_DOMAIN_NET_TYPE_VDS:
case VIR_DOMAIN_NET_TYPE_ETHERNET:
case VIR_DOMAIN_NET_TYPE_NULL:
case VIR_DOMAIN_NET_TYPE_LAST:
break;
}
return 0;
}

32
src/conf/schemas/domaincommon.rng
View File

@ -3486,8 +3486,36 @@
</attribute>
<interleave>
<optional>
<ref name="unixSocketSource"/>
</optional>
<element name="source">
<optional>
<attribute name="type">
<value>unix</value>
</attribute>
</optional>
<optional>
<attribute name="path">
<ref name="absFilePath"/>
</attribute>
</optional>
<optional>
<attribute name="mode">
<choice>
<value>server</value>
<value>client</value>
</choice>
</attribute>
</optional>
<optional>
<attribute name="dev">
<ref name="deviceName"/>
</attribute>
</optional>
<optional>
<ref name="reconnect"/>
</optional>
<empty/>
</element>
</optional>
<ref name="interface-options"/>
</interleave>
</group>

7
src/qemu/qemu_command.c
View File

@ -8649,11 +8649,12 @@ qemuBuildInterfaceCommandLine(virQEMUDriver *driver,
if (qemuInterfaceVhostuserConnect(cmd, net, qemuCaps) < 0)
goto cleanup;
if (virNetDevOpenvswitchGetVhostuserIfname(net->data.vhostuser->data.nix.path,
if (net->backend.type != VIR_DOMAIN_NET_BACKEND_PASST &&
virNetDevOpenvswitchGetVhostuserIfname(net->data.vhostuser->data.nix.path,
net->data.vhostuser->data.nix.listen,
&net->ifname) < 0)
&net->ifname) < 0) {
goto cleanup;
}
break;
case VIR_DOMAIN_NET_TYPE_VDPA:

6
src/qemu/qemu_extdevice.c
View File

@ -212,13 +212,15 @@ qemuExtDevicesStart(virQEMUDriver *driver,
for (i = 0; i < def->nnets; i++) {
virDomainNetDef *net = def->nets[i];
if (net->type != VIR_DOMAIN_NET_TYPE_USER)
if (net->type != VIR_DOMAIN_NET_TYPE_USER &&
net->type != VIR_DOMAIN_NET_TYPE_VHOSTUSER) {
continue;
}
if (net->backend.type == VIR_DOMAIN_NET_BACKEND_PASST) {
if (qemuPasstStart(vm, net) < 0)
return -1;
} else {
} else if (net->type == VIR_DOMAIN_NET_TYPE_USER) {
if (qemuSlirpStart(vm, net, incomingMigration) < 0)
return -1;
}

21
src/qemu/qemu_hotplug.c
View File

@ -1262,10 +1262,23 @@ qemuDomainAttachNetDevice(virQEMUDriver *driver,
if (!(charDevAlias = qemuAliasChardevFromDevAlias(net->info.alias)))
goto cleanup;
if (virNetDevOpenvswitchGetVhostuserIfname(net->data.vhostuser->data.nix.path,
net->data.vhostuser->data.nix.listen,
&net->ifname) < 0)
goto cleanup;
if (net->backend.type == VIR_DOMAIN_NET_BACKEND_PASST) {
/* vhostuser needs socket path in this location, and when
* backend is passt, the path is derived from other info,
* not taken from config.
*/
g_free(net->data.vhostuser->data.nix.path);
net->data.vhostuser->data.nix.path = qemuPasstCreateSocketPath(vm, net);
if (qemuPasstStart(vm, net) < 0)
goto cleanup;
} else {
if (virNetDevOpenvswitchGetVhostuserIfname(net->data.vhostuser->data.nix.path,
net->data.vhostuser->data.nix.listen,
&net->ifname) < 0)
goto cleanup;
}
if (qemuSecuritySetNetdevLabel(driver, vm, net) < 0)
goto cleanup;

3
src/qemu/qemu_passt.c
View File

@ -180,6 +180,9 @@ qemuPasstStart(virDomainObj *vm,
virCommandClearCaps(cmd);
if (virDomainNetGetActualType(net) == VIR_DOMAIN_NET_TYPE_VHOSTUSER)
virCommandAddArg(cmd, "--vhost-user");
virCommandAddArgList(cmd,
"--one-off",
"--socket", passtSocketName,

15
src/qemu/qemu_process.c
View File

@ -64,6 +64,7 @@
#include "qemu_backup.h"
#include "qemu_dbus.h"
#include "qemu_snapshot.h"
#include "qemu_passt.h"
#include "cpu/cpu.h"
#include "cpu/cpu_x86.h"
@ -5931,12 +5932,23 @@ qemuProcessPrepareDomainNetwork(virDomainObj *vm)
}
break;
case VIR_DOMAIN_NET_TYPE_VHOSTUSER:
if (net->backend.type == VIR_DOMAIN_NET_BACKEND_PASST) {
/* when using the passt backend, the path of the
* unix socket is always derived from other info
* *not* manually given in the config, but all the
* vhostuser code looks for it there.
*/
g_free(net->data.vhostuser->data.nix.path);
net->data.vhostuser->data.nix.path = qemuPasstCreateSocketPath(vm, net);
}
break;
case VIR_DOMAIN_NET_TYPE_DIRECT:
case VIR_DOMAIN_NET_TYPE_BRIDGE:
case VIR_DOMAIN_NET_TYPE_NETWORK:
case VIR_DOMAIN_NET_TYPE_ETHERNET:
case VIR_DOMAIN_NET_TYPE_USER:
case VIR_DOMAIN_NET_TYPE_VHOSTUSER:
case VIR_DOMAIN_NET_TYPE_SERVER:
case VIR_DOMAIN_NET_TYPE_CLIENT:
case VIR_DOMAIN_NET_TYPE_MCAST:
@ -5948,7 +5960,6 @@ qemuProcessPrepareDomainNetwork(virDomainObj *vm)
case VIR_DOMAIN_NET_TYPE_LAST:
break;
}
}
return 0;
}

7
src/qemu/qemu_validate.c
View File

@ -1751,7 +1751,9 @@ qemuValidateDomainDeviceDefNetwork(const virDomainNetDef *net,
return -1;
}
if (net->type == VIR_DOMAIN_NET_TYPE_USER) {
if (net->type == VIR_DOMAIN_NET_TYPE_USER ||
(net->type == VIR_DOMAIN_NET_TYPE_VHOSTUSER &&
net->backend.type == VIR_DOMAIN_NET_BACKEND_PASST)) {
virDomainCapsDeviceNet netCaps = { };
virQEMUCapsFillDomainDeviceNetCaps(qemuCaps, &netCaps);
@ -1826,7 +1828,8 @@ qemuValidateDomainDeviceDefNetwork(const virDomainNetDef *net,
}
if (net->type == VIR_DOMAIN_NET_TYPE_VHOSTUSER) {
if (!net->data.vhostuser->data.nix.path) {
if (!net->data.vhostuser->data.nix.path &&
net->backend.type != VIR_DOMAIN_NET_BACKEND_PASST) {
virReportError(VIR_ERR_XML_ERROR,
_("Missing required attribute '%1$s' in element '%2$s'"),
"path", "source");

2
tests/qemuxmlconfdata/net-user-slirp-portforward.x86_64-latest.err
View File

@ -1 +1 @@
unsupported configuration: The <portForward> element can only be used with <interface type='user'> and its 'passt' backend
unsupported configuration: The <portForward> element can only be used with the 'passt' backend of interface type='user' or type='vhostuser'

42
tests/qemuxmlconfdata/net-vhostuser-passt.x86_64-latest.args Normal file
View File

@ -0,0 +1,42 @@
LC_ALL=C \
PATH=/bin \
HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1 \
USER=test \
LOGNAME=test \
XDG_DATA_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.local/share \
XDG_CACHE_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.cache \
XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \
/usr/bin/qemu-system-x86_64 \
-name guest=QEMUGuest1,debug-threads=on \
-S \
-object '{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain--1-QEMUGuest1/master-key.aes"}' \
-machine pc,usb=off,dump-guest-core=off,memory-backend=pc.ram,acpi=off \
-accel tcg \
-cpu qemu64 \
-m size=219136k \
-object '{"qom-type":"memory-backend-ram","id":"pc.ram","size":224395264}' \
-overcommit mem-lock=off \
-smp 1,sockets=1,cores=1,threads=1 \
-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
-display none \
-no-user-config \
-nodefaults \
-chardev socket,id=charmonitor,fd=1729,server=on,wait=off \
-mon chardev=charmonitor,id=monitor,mode=control \
-rtc base=utc \
-no-shutdown \
-boot strict=on \
-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-1-storage","read-only":false}' \
-device '{"driver":"ide-hd","bus":"ide.0","unit":0,"drive":"libvirt-1-storage","id":"ide0-0-0","bootindex":1}' \
-chardev socket,id=charnet0,path=/var/run/libvirt/qemu/passt/-1-QEMUGuest1-net0.socket \
-netdev '{"type":"vhost-user","chardev":"charnet0","id":"hostnet0"}' \
-device '{"driver":"virtio-net-pci","netdev":"hostnet0","id":"net0","mac":"00:11:22:33:44:55","bus":"pci.0","addr":"0x2"}' \
-chardev socket,id=charnet1,path=/var/run/libvirt/qemu/passt/-1-QEMUGuest1-net1.socket \
-netdev '{"type":"vhost-user","chardev":"charnet1","id":"hostnet1"}' \
-device '{"driver":"virtio-net-pci","netdev":"hostnet1","id":"net1","mac":"00:11:22:33:44:11","bus":"pci.0","addr":"0x3"}' \
-chardev socket,id=charnet2,path=/var/run/libvirt/qemu/passt/-1-QEMUGuest1-net2.socket \
-netdev '{"type":"vhost-user","chardev":"charnet2","id":"hostnet2"}' \
-device '{"driver":"virtio-net-pci","netdev":"hostnet2","id":"net2","mac":"00:11:22:33:44:11","bus":"pci.0","addr":"0x4"}' \
-audiodev '{"id":"audio1","driver":"none"}' \
-sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \
-msg timestamp=on

72
tests/qemuxmlconfdata/net-vhostuser-passt.x86_64-latest.xml Normal file
View File

@ -0,0 +1,72 @@
<domain type='qemu'>
<name>QEMUGuest1</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64' machine='pc'>hvm</type>
<boot dev='hd'/>
</os>
<cpu mode='custom' match='exact' check='none'>
<model fallback='forbid'>qemu64</model>
</cpu>
<clock offset='utc'/>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>destroy</on_crash>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='block' device='disk'>
<driver name='qemu' type='raw'/>
<source dev='/dev/HostVG/QEMUGuest1'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='usb' index='0' model='none'/>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<interface type='vhostuser'>
<mac address='00:11:22:33:44:55'/>
<ip address='172.17.2.0' family='ipv4' prefix='24'/>
<ip address='2001:db8:ac10:fd01::feed' family='ipv6'/>
<portForward proto='tcp' address='2001:db8:ac10:fd01::1:10'>
<range start='22' to='2022'/>
<range start='1000' end='1050'/>
<range start='1020' exclude='yes'/>
<range start='1030' end='1040' exclude='yes'/>
</portForward>
<portForward proto='udp' address='1.2.3.4' dev='eth0'>
<range start='5000' end='5020' to='6000'/>
<range start='5010' end='5015' exclude='yes'/>
</portForward>
<portForward proto='tcp'>
<range start='80'/>
</portForward>
<portForward proto='tcp'>
<range start='443' to='344'/>
</portForward>
<model type='virtio'/>
<backend type='passt' logFile='/var/log/loglaw.blog'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</interface>
<interface type='vhostuser'>
<mac address='00:11:22:33:44:11'/>
<model type='virtio'/>
<backend type='passt'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<interface type='vhostuser'>
<mac address='00:11:22:33:44:11'/>
<model type='virtio'/>
<backend type='passt'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</interface>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<audio id='1' type='none'/>
<memballoon model='none'/>
</devices>
</domain>

70
tests/qemuxmlconfdata/net-vhostuser-passt.xml Normal file
View File

@ -0,0 +1,70 @@
<domain type='qemu'>
<name>QEMUGuest1</name>
<uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
<memory unit='KiB'>219136</memory>
<currentMemory unit='KiB'>219136</currentMemory>
<vcpu placement='static'>1</vcpu>
<os>
<type arch='x86_64' 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-system-x86_64</emulator>
<disk type='block' device='disk'>
<driver name='qemu' type='raw'/>
<source dev='/dev/HostVG/QEMUGuest1'/>
<target dev='hda' bus='ide'/>
<address type='drive' controller='0' bus='0' target='0' unit='0'/>
</disk>
<controller type='usb' index='0' model='none'/>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
</controller>
<controller type='pci' index='0' model='pci-root'/>
<interface type='vhostuser'>
<mac address='00:11:22:33:44:55'/>
<ip address='172.17.2.0' family='ipv4' prefix='24'/>
<ip address='2001:db8:ac10:fd01::feed' family='ipv6'/>
<source dev='eth42'/>
<portForward proto='tcp' address='2001:db8:ac10:fd01::1:10'>
<range start='22' to='2022'/>
<range start='1000' end='1050'/>
<range start='1020' exclude='yes'/>
<range start='1030' end='1040' exclude='yes'/>
</portForward>
<portForward proto='udp' address='1.2.3.4' dev='eth0'>
<range start='5000' end='5020' to='6000'/>
<range start='5010' end='5015' exclude='yes'/>
</portForward>
<portForward proto='tcp'>
<range start='80'/>
</portForward>
<portForward proto='tcp'>
<range start='443' to='344'/>
</portForward>
<model type='virtio'/>
<backend type='passt' logFile='/var/log/loglaw.blog'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x02' function='0x0'/>
</interface>
<interface type='vhostuser'>
<mac address='00:11:22:33:44:11'/>
<backend type='passt'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
</interface>
<interface type='vhostuser'>
<mac address='00:11:22:33:44:11'/>
<source dev='eth43'/>
<model type='virtio'/>
<backend type='passt'/>
<address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
</interface>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<audio id='1' type='none'/>
<memballoon model='none'/>
</devices>
</domain>

1
tests/qemuxmlconftest.c
View File

@ -1793,6 +1793,7 @@ mymain(void)
DO_TEST_CAPS_LATEST("net-user-passt");
DO_TEST_CAPS_VER("net-user-passt", "7.2.0");
DO_TEST_CAPS_LATEST_PARSE_ERROR("net-user-slirp-portforward");
DO_TEST_CAPS_LATEST("net-vhostuser-passt");
DO_TEST_CAPS_LATEST("net-virtio");
DO_TEST_CAPS_LATEST("net-virtio-device");
DO_TEST_CAPS_LATEST("net-virtio-disable-offloads");