net: Use hubs for the vlan feature

Stop using the special-case vlan code in net.c.  Instead use the hub net
client to implement the vlan feature.  The next patch will remove vlan
code from net.c completely.

Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>

1 files changed, 20 insertions, 17 deletions

diff --git a/net.c b/net.c
index e7a8d81591..4feca6c0b9 100644
--- a/net.c
+++ b/net.c
@@ -157,23 +157,25 @@ void qemu_macaddr_default_if_unset(MACAddr *macaddr)
     macaddr->a[5] = 0x56 + index++;
 }
 
+/**
+ * Generate a name for net client
+ *
+ * Only net clients created with the legacy -net option need this.  Naming is
+ * mandatory for net clients created with -netdev.
+ */
 static char *assign_name(VLANClientState *vc1, const char *model)
 {
-    VLANState *vlan;
     VLANClientState *vc;
     char buf[256];
     int id = 0;
 
-    QTAILQ_FOREACH(vlan, &vlans, next) {
-        QTAILQ_FOREACH(vc, &vlan->clients, next) {
-            if (vc != vc1 && strcmp(vc->model, model) == 0) {
-                id++;
-            }
-        }
-    }
-
     QTAILQ_FOREACH(vc, &non_vlan_clients, next) {
-        if (vc != vc1 && strcmp(vc->model, model) == 0) {
+        if (vc == vc1) {
+            continue;
+        }
+        /* For compatibility only bump id for net clients on a vlan */
+        if (strcmp(vc->model, model) == 0 &&
+            net_hub_id_for_client(vc, NULL) == 0) {
             id++;
         }
     }
@@ -750,7 +752,7 @@ int net_handle_fd_param(Monitor *mon, const char *param)
 }
 
 static int net_init_nic(const NetClientOptions *opts, const char *name,
-                        VLANState *vlan)
+                        VLANClientState *peer)
 {
     int idx;
     NICInfo *nd;
@@ -776,8 +778,8 @@ static int net_init_nic(const NetClientOptions *opts, const char *name,
             return -1;
         }
     } else {
-        assert(vlan);
-        nd->vlan = vlan;
+        assert(peer);
+        nd->netdev = peer;
     }
     if (name) {
         nd->name = g_strdup(name);
@@ -816,7 +818,7 @@ static int net_init_nic(const NetClientOptions *opts, const char *name,
 static int (* const net_client_init_fun[NET_CLIENT_OPTIONS_KIND_MAX])(
     const NetClientOptions *opts,
     const char *name,
-    VLANState *vlan) = {
+    VLANClientState *peer) = {
         [NET_CLIENT_OPTIONS_KIND_NIC]       = net_init_nic,
 #ifdef CONFIG_SLIRP
         [NET_CLIENT_OPTIONS_KIND_USER]      = net_init_slirp,
@@ -876,17 +878,17 @@ static int net_client_init1(const void *object, int is_netdev, Error **errp)
     }
 
     if (net_client_init_fun[opts->kind]) {
-        VLANState *vlan = NULL;
+        VLANClientState *peer = NULL;
 
         /* Do not add to a vlan if it's a -netdev or a nic with a netdev=
          * parameter. */
         if (!is_netdev &&
             (opts->kind != NET_CLIENT_OPTIONS_KIND_NIC ||
              !opts->nic->has_netdev)) {
-            vlan = qemu_find_vlan(u.net->has_vlan ? u.net->vlan : 0, true);
+            peer = net_hub_add_port(u.net->has_vlan ? u.net->vlan : 0, NULL);
         }
 
-        if (net_client_init_fun[opts->kind](opts, name, vlan) < 0) {
+        if (net_client_init_fun[opts->kind](opts, name, peer) < 0) {
             /* TODO push error reporting into init() methods */
             error_set(errp, QERR_DEVICE_INIT_FAILED,
                       NetClientOptionsKind_lookup[opts->kind]);
@@ -1085,6 +1087,7 @@ void do_info_network(Monitor *mon)
             print_net_client(mon, peer);
         }
     }
+    net_hub_info(mon);
 }
 
 void qmp_set_link(const char *name, bool up, Error **errp)