net: Get rid of 'vlan' terminology and use 'hub' instead in the source files

'vlan' is very confusing since it does not mean something like IEEE
802.1Q, but rather emulated hubs, so let's switch to that terminology
instead.

Buglink: https://bugs.launchpad.net/qemu/+bug/658904
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>

3 files changed, 9 insertions, 10 deletions

diff --git a/net/hub.c b/net/hub.c
index 5e84a9a..78b671e 100644
--- a/net/hub.c
+++ b/net/hub.c
@@ -23,8 +23,7 @@
 
 /*
  * A hub broadcasts incoming packets to all its ports except the source port.
- * Hubs can be used to provide independent network segments, also confusingly
- * named the QEMU 'vlan' feature.
+ * Hubs can be used to provide independent emulated network segments.
  */
 
 typedef struct NetHub NetHub;
@@ -345,10 +344,10 @@ void net_hub_check_clients(void)
             }
         }
         if (has_host_dev && !has_nic) {
-            warn_report("vlan %d with no nics", hub->id);
+            warn_report("hub %d with no nics", hub->id);
         }
         if (has_nic && !has_host_dev) {
-            warn_report("vlan %d is not connected to host network", hub->id);
+            warn_report("hub %d is not connected to host network", hub->id);
         }
     }
 }
diff --git a/net/slirp.c b/net/slirp.c
index 8991816..6922524 100644
--- a/net/slirp.c
+++ b/net/slirp.c
@@ -415,7 +415,7 @@ static SlirpState *slirp_lookup(Monitor *mon, const char *hub_id,
         if (hub_id) {
             nc = net_hub_find_client_by_name(strtol(hub_id, NULL, 0), name);
             if (!nc) {
-                monitor_printf(mon, "unrecognized (vlan-id, stackname) pair\n");
+                monitor_printf(mon, "unrecognized (hub-id, stackname) pair\n");
                 return NULL;
             }
         } else {
@@ -870,9 +870,9 @@ void hmp_info_usernet(Monitor *mon, const QDict *qdict)
 
     QTAILQ_FOREACH(s, &slirp_stacks, entry) {
         int id;
-        bool got_vlan_id = net_hub_id_for_client(&s->nc, &id) == 0;
-        monitor_printf(mon, "VLAN %d (%s):\n",
-                       got_vlan_id ? id : -1,
+        bool got_hub_id = net_hub_id_for_client(&s->nc, &id) == 0;
+        monitor_printf(mon, "Hub %d (%s):\n",
+                       got_hub_id ? id : -1,
                        s->nc.name);
         slirp_connection_info(s->slirp, mon);
     }
diff --git a/net/tap.c b/net/tap.c
index 2b3a36f..de05f20 100644
--- a/net/tap.c
+++ b/net/tap.c
@@ -766,10 +766,10 @@ int net_init_tap(const Netdev *netdev, const char *name,
     queues = tap->has_queues ? tap->queues : 1;
     vhostfdname = tap->has_vhostfd ? tap->vhostfd : NULL;
 
-    /* QEMU vlans does not support multiqueue tap, in this case peer is set.
+    /* QEMU hubs do not support multiqueue tap, in this case peer is set.
      * For -netdev, peer is always NULL. */
     if (peer && (tap->has_queues || tap->has_fds || tap->has_vhostfds)) {
-        error_setg(errp, "Multiqueue tap cannot be used with QEMU vlans");
+        error_setg(errp, "Multiqueue tap cannot be used with hubs");
         return -1;
     }