[libvirt] [PATH lxc_support_ethernet] fix bug:lxc don't support network type of ethernet

[mark zhong]

 for exmple,the xml is:
 <domain type = 'lxc'>
    ...
      <devices>
           <interface type ="ethernet">
	       <mac address="02:36:1d:18:2a:e4"/>
		<ip address='192.168.112.105' family='ipv4' prefix='24'/>
		<target  dev="tap361d182e-14"/>
           </interface>
      <devices>
  </domian>

  when i start lxc with that xml file,system will report error and start lxc failed

  Now i create the veth pair and set mac address in lxc if the network type is ethernet

Signed-off-by: mark zhong <zhongguocheng1 at 163.com>
---
 src/lxc/lxc_process.c | 36 ++++++++++++++++++++++++++++++++++++
 src/lxc/lxc_process.h |  3 +++
 2 files changed, 39 insertions(+)

diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c
index 57e3880..913fe36 100644
--- a/src/lxc/lxc_process.c
+++ b/src/lxc/lxc_process.c
@@ -359,6 +359,39 @@ char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
     return ret;
 }
 
+char *virLXCProcessSetupInterfaceEthernet(virDomainDefPtr vm,
+                                          virDomainNetDefPtr net)
+{
+    char *ret = NULL;
+    char *parentVeth;
+    char *containerVeth = NULL;
+
+    VIR_DEBUG("calling vethCreate()");
+    parentVeth = net->ifname;
+    if (virNetDevVethCreate(&parentVeth, &containerVeth) < 0)
+        goto cleanup;
+    VIR_DEBUG("parentVeth: %s, containerVeth: %s", parentVeth, containerVeth);
+
+    if (net->ifname == NULL)
+        net->ifname = parentVeth;
+
+    if (virNetDevSetMAC(containerVeth, &net->mac) < 0)
+        goto cleanup;
+
+    if (virNetDevSetOnline(parentVeth, true) < 0)
+        goto cleanup;
+
+    if (net->filter &&
+        virDomainConfNWFilterInstantiate(vm->uuid, net) < 0)
+        goto cleanup;
+
+    ret = containerVeth;
+
+ cleanup:
+    return ret;
+}
+
+
 static const char *nsInfoLocal[VIR_LXC_DOMAIN_NAMESPACE_LAST] = {
     [VIR_LXC_DOMAIN_NAMESPACE_SHARENET] = "net",
     [VIR_LXC_DOMAIN_NAMESPACE_SHAREIPC] = "ipc",
@@ -559,6 +592,9 @@ static int virLXCProcessSetupInterfaces(virConnectPtr conn,
             break;
 
         case VIR_DOMAIN_NET_TYPE_ETHERNET:
+	    if (!(veth = virLXCProcessSetupInterfaceEthernet(def,
+                                                            net)))
+		goto cleanup;
             break;
 
         case VIR_DOMAIN_NET_TYPE_USER:
diff --git a/src/lxc/lxc_process.h b/src/lxc/lxc_process.h
index b6c8083..3b4ade3 100644
--- a/src/lxc/lxc_process.h
+++ b/src/lxc/lxc_process.h
@@ -53,5 +53,8 @@ char *virLXCProcessSetupInterfaceBridged(virDomainDefPtr vm,
 char *virLXCProcessSetupInterfaceDirect(virConnectPtr conn,
                                         virDomainDefPtr def,
                                         virDomainNetDefPtr net);
+char *virLXCProcessSetupInterfaceEthernet(virDomainDefPtr vm,
+                                          virDomainNetDefPtr net);
+
 
 #endif /* __LXC_PROCESS_H__ */
-- 
2.5.1.windows.1