qemu: support setting host-side IP addresses/routes

For type='ethernet' interfaces only.

(This patch had been pushed earlier in
commit 0b4645a7, but was reverted in
commit 84d47a3c because it had been
accidentally pushed during the freeze for release 2.0.0)

src/qemu/qemu_interface.c

@@ -196,8 +196,12 @@ qemuInterfaceStopDevice(virDomainNetDefPtr net)
         break;
     }
 
-    case VIR_DOMAIN_NET_TYPE_USER:
     case VIR_DOMAIN_NET_TYPE_ETHERNET:
+        if (virNetDevIPInfoAddToDev(net->ifname, &net->hostIP) < 0)
+            goto cleanup;
+        break;
+
+    case VIR_DOMAIN_NET_TYPE_USER:
     case VIR_DOMAIN_NET_TYPE_VHOSTUSER:
     case VIR_DOMAIN_NET_TYPE_SERVER:
     case VIR_DOMAIN_NET_TYPE_CLIENT:

tests/qemuxml2argvdata/qemuxml2argv-net-eth-hostip.args

+LC_ALL=C \
+PATH=/bin \
+HOME=/home/test \
+USER=test \
+LOGNAME=test \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu \
+-name QEMUGuest1 \
+-S \
+-M pc \
+-m 214 \
+-smp 1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-nographic \
+-nodefaults \
+-monitor unix:/tmp/lib/domain--1-QEMUGuest1/monitor.sock,server,nowait \
+-no-acpi \
+-boot c \
+-usb \
+-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 \
+-device rtl8139,vlan=0,id=net0,mac=00:11:22:33:44:55,bus=pci.0,addr=0x3 \
+-net tap,fd=3,vlan=0,name=hostnet0

tests/qemuxml2argvdata/qemuxml2argv-net-eth-hostip.xml

+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</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='ethernet'>
+      <mac address='00:11:22:33:44:55'/>
+      <source>
+        <ip address='192.168.125.1' family='ipv4' prefix='24' peer='192.168.125.2'/>
+        <route family='ipv4' address='10.20.0.0' prefix='16' gateway='192.168.125.2'/>
+      </source>
+      <script path='/etc/qemu-ifup'/>
+      <model type='rtl8139'/>
+    </interface>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>

tests/qemuxml2argvtest.c

@@ -1012,6 +1012,7 @@ mymain(void)
     DO_TEST("net-eth", NONE);
     DO_TEST("net-eth-ifname", NONE);
     DO_TEST("net-eth-names", NONE);
+    DO_TEST("net-eth-hostip", NONE);
     DO_TEST("net-client", NONE);
     DO_TEST("net-server", NONE);
     DO_TEST("net-mcast", NONE);

tests/qemuxml2xmloutdata/qemuxml2xmlout-net-eth-hostip.xml

+<domain type='qemu'>
+  <name>QEMUGuest1</name>
+  <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+  <memory unit='KiB'>219100</memory>
+  <currentMemory unit='KiB'>219100</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'>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+    </controller>
+    <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='ethernet'>
+      <mac address='00:11:22:33:44:55'/>
+      <source>
+        <ip address='192.168.125.1' family='ipv4' prefix='24' peer='192.168.125.2'/>
+        <route family='ipv4' address='10.20.0.0' prefix='16' gateway='192.168.125.2'/>
+      </source>
+      <script path='/etc/qemu-ifup'/>
+      <model type='rtl8139'/>
+      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+    </interface>
+    <input type='mouse' bus='ps2'/>
+    <input type='keyboard' bus='ps2'/>
+    <memballoon model='none'/>
+  </devices>
+</domain>

tests/qemuxml2xmltest.c

@@ -464,6 +464,7 @@ mymain(void)
     DO_TEST("net-virtio-disable-offloads");
     DO_TEST("net-eth");
     DO_TEST("net-eth-ifname");
+    DO_TEST("net-eth-hostip");
     DO_TEST("net-virtio-network-portgroup");
     DO_TEST("net-hostdev");
     DO_TEST("net-hostdev-vfio");