[libvirt] [PATCH v2 04/14] qemuBuildInterfaceCommandLine: Move vhostuser handling a bit further

[Michal Privoznik]

The idea is to have function that does some checking of the
arguments at its beginning and then have one big switch for all
the interface types it supports. Each one of them generating the
corresponding part of the command line.

Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
 src/qemu/qemu_command.c                            |  9 +++---
 .../qemuxml2argv-net-vhostuser-fail.xml            | 36 ++++++++++++++++++++++
 tests/qemuxml2argvtest.c                           |  3 ++
 3 files changed, 44 insertions(+), 4 deletions(-)
 create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser-fail.xml

diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 0da2add..5ca82ec 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -7919,15 +7919,13 @@ qemuBuildInterfaceCommandLine(virCommandPtr cmd,
     if (!bootindex)
         bootindex = net->info.bootIndex;
 
-    if (actualType == VIR_DOMAIN_NET_TYPE_VHOSTUSER)
-        return qemuBuildVhostuserCommandLine(cmd, def, net, qemuCaps, 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 ||
           actualType == VIR_DOMAIN_NET_TYPE_DIRECT ||
-          actualType == VIR_DOMAIN_NET_TYPE_ETHERNET)) {
+          actualType == VIR_DOMAIN_NET_TYPE_ETHERNET ||
+          actualType == VIR_DOMAIN_NET_TYPE_VHOSTUSER)) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                        _("Multiqueue network is not supported for: %s"),
                        virDomainNetTypeToString(actualType));
@@ -8007,6 +8005,9 @@ qemuBuildInterfaceCommandLine(virCommandPtr cmd,
          */
         ret = 0;
         goto cleanup;
+    } else if (actualType == VIR_DOMAIN_NET_TYPE_VHOSTUSER) {
+        ret = qemuBuildVhostuserCommandLine(cmd, def, net, qemuCaps, bootindex);
+        goto cleanup;
     }
 
     /* For types whose implementations use a netdev on the host, add
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser-fail.xml b/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser-fail.xml
new file mode 100644
index 0000000..e9fe14f
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-net-vhostuser-fail.xml
@@ -0,0 +1,36 @@
+<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='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'>
+      <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'/>
+    <controller type='ide' index='0'/>
+    <controller type='pci' index='0' model='pci-root'/>
+    <interface type='vhostuser'>
+      <mac address='52:54:00:ee:96:6b'/>
+      <source type='unix' path='/tmp/vhost0.sock' mode='server'/>
+      <model type='virtio'/>
+      <filterref filter='myfilter'/>
+      <backend tap='/dev/mytap'/>
+      <driver queues='4'/>
+    </interface>
+    <memballoon model='none'/>
+  </devices>
+</domain>
diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c
index 442ab31..8deb651 100644
--- a/tests/qemuxml2argvtest.c
+++ b/tests/qemuxml2argvtest.c
@@ -1066,6 +1066,9 @@ mymain(void)
     DO_TEST("net-vhostuser-multiq",
             QEMU_CAPS_NETDEV, QEMU_CAPS_VHOSTUSER_MULTIQUEUE);
     DO_TEST_FAILURE("net-vhostuser-multiq", QEMU_CAPS_NETDEV);
+    DO_TEST_FAILURE("net-vhostuser-fail",
+                    QEMU_CAPS_NETDEV,
+                    QEMU_CAPS_VHOSTUSER_MULTIQUEUE);
     DO_TEST("net-user", NONE);
     DO_TEST("net-virtio", NONE);
     DO_TEST("net-virtio-device",
-- 
2.8.4