net: introduce qemu_net_client_setup()

This patch separates the setup of NetClientState from its allocation, this will
allow allocating an arrays of NetClientState and does the initialization one by
one which is what multiqueue needs.

Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
diff --git a/net/net.c b/net/net.c
index 16dd327..3a5bdf6 100644
--- a/net/net.c
+++ b/net/net.c
@@ -182,17 +182,12 @@
     return g_strdup(buf);
 }
 
-NetClientState *qemu_new_net_client(NetClientInfo *info,
-                                    NetClientState *peer,
-                                    const char *model,
-                                    const char *name)
+static void qemu_net_client_setup(NetClientState *nc,
+                                  NetClientInfo *info,
+                                  NetClientState *peer,
+                                  const char *model,
+                                  const char *name)
 {
-    NetClientState *nc;
-
-    assert(info->size >= sizeof(NetClientState));
-
-    nc = g_malloc0(info->size);
-
     nc->info = info;
     nc->model = g_strdup(model);
     if (name) {
@@ -210,6 +205,20 @@
 
     nc->send_queue = qemu_new_net_queue(nc);
 
+}
+
+NetClientState *qemu_new_net_client(NetClientInfo *info,
+                                    NetClientState *peer,
+                                    const char *model,
+                                    const char *name)
+{
+    NetClientState *nc;
+
+    assert(info->size >= sizeof(NetClientState));
+
+    nc = g_malloc0(info->size);
+    qemu_net_client_setup(nc, info, peer, model, name);
+
     return nc;
 }