10:41 a.m.
https://bugzilla.redhat.com/show_bug.cgi?id=1366505
So far, this function lacked support for
VIR_DOMAIN_NET_TYPE_VHOSTUSER leaving callers to hack around the
problem by constructing the command line on their own. This is
not ideal as it blocks hot plug support.
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/qemu/qemu_command.c | 43 +++++++++++++---------
.../qemuxml2argv-net-vhostuser-multiq.args | 6 +--
.../qemuxml2argv-net-vhostuser.args | 4 +-
3 files changed, 31 insertions(+), 22 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 34594b3..e3dc34a 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -3670,7 +3670,13 @@ qemuBuildHostNetStr(virDomainNetDefPtr net,
return NULL;
case VIR_DOMAIN_NET_TYPE_VHOSTUSER:
- /* Unsupported yet. */
+ virBufferAsprintf(&buf, "vhost-user%cchardev=char%s",
+ type_sep,
+ net->info.alias);
+ type_sep = ',';
+ if (net->driver.virtio.queues > 1)
+ virBufferAsprintf(&buf, ",queues=%u",
+ net->driver.virtio.queues);
break;
case VIR_DOMAIN_NET_TYPE_LAST:
@@ -7854,14 +7860,15 @@ qemuBuildGraphicsCommandLine(virQEMUDriverConfigPtr cfg,
}
static int
-qemuBuildVhostuserCommandLine(virCommandPtr cmd,
+qemuBuildVhostuserCommandLine(virQEMUDriverPtr driver,
+ virCommandPtr cmd,
virDomainDefPtr def,
virDomainNetDefPtr net,
virQEMUCapsPtr qemuCaps,
unsigned int bootindex)
{
char *chardev = NULL;
- virBuffer netdev_buf = VIR_BUFFER_INITIALIZER;
+ char *netdev = NULL;
unsigned int queues = net->driver.virtio.queues;
char *nic = NULL;
@@ -7898,25 +7905,27 @@ qemuBuildVhostuserCommandLine(virCommandPtr cmd,
goto error;
}
- virBufferAsprintf(&netdev_buf, "vhost-user,id=host%s,chardev=char%s",
- net->info.alias, net->info.alias);
-
- if (queues > 1) {
- if (!virQEMUCapsGet(qemuCaps, QEMU_CAPS_VHOSTUSER_MULTIQUEUE)) {
- virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
- _("multi-queue is not supported for vhost-user "
- "with this QEMU binary"));
- goto error;
- }
- virBufferAsprintf(&netdev_buf, ",queues=%u", queues);
+ if (queues > 1 &&
+ !virQEMUCapsGet(qemuCaps, QEMU_CAPS_VHOSTUSER_MULTIQUEUE)) {
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
+ _("multi-queue is not supported for vhost-user "
+ "with this QEMU binary"));
+ goto error;
}
+ if (!(netdev = qemuBuildHostNetStr(net, driver,
+ ',', -1,
+ NULL, 0, NULL, 0)))
+ goto error;
+
+
virCommandAddArg(cmd, "-chardev");
virCommandAddArg(cmd, chardev);
VIR_FREE(chardev);
virCommandAddArg(cmd, "-netdev");
- virCommandAddArgBuffer(cmd, &netdev_buf);
+ virCommandAddArg(cmd, netdev);
+ VIR_FREE(netdev);
if (!(nic = qemuBuildNicDevStr(def, net, -1, bootindex,
queues, qemuCaps))) {
@@ -7931,8 +7940,8 @@ qemuBuildVhostuserCommandLine(virCommandPtr cmd,
return 0;
error:
+ VIR_FREE(netdev);
VIR_FREE(chardev);
- virBufferFreeAndReset(&netdev_buf);
VIR_FREE(nic);
return -1;
@@ -7969,7 +7978,7 @@ qemuBuildInterfaceCommandLine(virCommandPtr cmd,
bootindex = net->info.bootIndex;
if (actualType == VIR_DOMAIN_NET_TYPE_VHOSTUSER)
- return qemuBuildVhostuserCommandLine(cmd, def, net, qemuCaps, bootindex);
+ return qemuBuildVhostuserCommandLine(driver, cmd, def, net, qemuCaps,
bootindex);
if (actualType == VIR_DOMAIN_NET_TYPE_HOSTDEV) {
/* NET_TYPE_HOSTDEV devices are really hostdev devices, so
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser-multiq.args
b/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser-multiq.args
index 4360e5e..59929c1 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser-multiq.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser-multiq.args
@@ -20,17 +20,17 @@ QEMU_AUDIO_DRV=none \
-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
-chardev socket,id=charnet0,path=/tmp/vhost0.sock,server \
--netdev vhost-user,id=hostnet0,chardev=charnet0 \
+-netdev vhost-user,chardev=charnet0,id=hostnet0 \
-device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:ee:96:6b,bus=pci.0,\
addr=0x3 \
-chardev socket,id=charnet1,path=/tmp/vhost1.sock \
--netdev vhost-user,id=hostnet1,chardev=charnet1 \
+-netdev vhost-user,chardev=charnet1,id=hostnet1 \
-device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:00:ee:96:6c,bus=pci.0,\
addr=0x4 \
-netdev socket,listen=:2015,id=hostnet2 \
-device rtl8139,netdev=hostnet2,id=net2,mac=52:54:00:95:db:c0,bus=pci.0,\
addr=0x5 \
-chardev socket,id=charnet3,path=/tmp/vhost2.sock \
--netdev vhost-user,id=hostnet3,chardev=charnet3,queues=4 \
+-netdev vhost-user,chardev=charnet3,queues=4,id=hostnet3 \
-device virtio-net-pci,mq=on,vectors=10,netdev=hostnet3,id=net3,\
mac=52:54:00:ee:96:6d,bus=pci.0,addr=0x6
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser.args
b/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser.args
index 47c1d84..e15d735 100644
--- a/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser.args
+++ b/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser.args
@@ -20,11 +20,11 @@ QEMU_AUDIO_DRV=none \
-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
-device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 \
-chardev socket,id=charnet0,path=/tmp/vhost0.sock,server \
--netdev vhost-user,id=hostnet0,chardev=charnet0 \
+-netdev vhost-user,chardev=charnet0,id=hostnet0 \
-device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:ee:96:6b,bus=pci.0,\
addr=0x3 \
-chardev socket,id=charnet1,path=/tmp/vhost1.sock \
--netdev vhost-user,id=hostnet1,chardev=charnet1 \
+-netdev vhost-user,chardev=charnet1,id=hostnet1 \
-device virtio-net-pci,netdev=hostnet1,id=net1,mac=52:54:00:ee:96:6c,bus=pci.0,\
addr=0x4 \
-netdev socket,listen=:2015,id=hostnet2 \
--
2.8.4