[Qemu-devel] [PATCH 13/16] net: Make "info network" output more readable info

[Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>]

From: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>

Reviewed-by:   Jan Kiszka  <jan.kiszka@siemens.com>
Signed-off-by: Zhi Yong Wu <wuzhy@linux.vnet.ibm.com>
Signed-off-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>
---
 net.c     |   14 +++++++++-----
 net.h     |    1 +
 net/hub.c |   23 +++++++++++++++++++++--
 net/hub.h |    1 +
 4 files changed, 32 insertions(+), 7 deletions(-)

diff --git a/net.c b/net.c
index cdc6cc7..2eca563 100644
--- a/net.c
+++ b/net.c
@@ -856,7 +856,7 @@ void qmp_netdev_del(const char *id, Error **errp)
     qemu_opts_del(qemu_opts_find(qemu_find_opts_err("netdev", errp), id));
 }
 
-static void print_net_client(Monitor *mon, NetClientState *nc)
+void print_net_client(Monitor *mon, NetClientState *nc)
 {
     monitor_printf(mon, "%s: type=%s,%s\n", nc->name,
                    NetClientOptionsKind_lookup[nc->info->type], nc->info_str);
@@ -867,20 +867,24 @@ void do_info_network(Monitor *mon)
     NetClientState *nc, *peer;
     NetClientOptionsKind type;
 
-    monitor_printf(mon, "Devices not on any VLAN:\n");
+    net_hub_info(mon);
+
     QTAILQ_FOREACH(nc, &net_clients, next) {
         peer = nc->peer;
         type = nc->info->type;
+
+        if (net_hub_port_peer_nc(nc)) {
+            continue;
+        }
+
         if (!peer || type == NET_CLIENT_OPTIONS_KIND_NIC) {
-            monitor_printf(mon, "  ");
             print_net_client(mon, nc);
         } /* else it's a netdev connected to a NIC, printed with the NIC */
         if (peer && type == NET_CLIENT_OPTIONS_KIND_NIC) {
-            monitor_printf(mon, "   \\ ");
+            monitor_printf(mon, " \\ ");
             print_net_client(mon, peer);
         }
     }
-    net_hub_info(mon);
 }
 
 void qmp_set_link(const char *name, bool up, Error **errp)
diff --git a/net.h b/net.h
index 7e629d3..c819de4 100644
--- a/net.h
+++ b/net.h
@@ -100,6 +100,7 @@ void qemu_check_nic_model(NICInfo *nd, const char *model);
 int qemu_find_nic_model(NICInfo *nd, const char * const *models,
                         const char *default_model);
 
+void print_net_client(Monitor *mon, NetClientState *vc);
 void do_info_network(Monitor *mon);
 
 /* NIC info */
diff --git a/net/hub.c b/net/hub.c
index 1e88fb2..f697a78 100644
--- a/net/hub.c
+++ b/net/hub.c
@@ -214,6 +214,25 @@ NetClientState *net_hub_port_find(unsigned int hub_id)
 }
 
 /**
+ * Determine if one nc peers with one hub port
+ */
+bool net_hub_port_peer_nc(NetClientState *nc)
+{
+    NetHub *hub;
+    NetHubPort *port;
+
+    QLIST_FOREACH(hub, &hubs, next) {
+        QLIST_FOREACH(port, &hub->ports, next) {
+            if (nc == port->nc.peer) {
+                return true;
+            }
+        }
+    }
+
+    return false;
+}
+
+/**
  * Print hub configuration
  */
 void net_hub_info(Monitor *mon)
@@ -224,8 +243,8 @@ void net_hub_info(Monitor *mon)
     QLIST_FOREACH(hub, &hubs, next) {
         monitor_printf(mon, "hub %u\n", hub->id);
         QLIST_FOREACH(port, &hub->ports, next) {
-            monitor_printf(mon, "    port %u peer %s\n", port->id,
-                           port->nc.peer ? port->nc.peer->name : "<none>");
+            monitor_printf(mon, " \\ ");
+            print_net_client(mon, port->nc.peer);
         }
     }
 }
diff --git a/net/hub.h b/net/hub.h
index d47dc96..83af09b 100644
--- a/net/hub.h
+++ b/net/hub.h
@@ -26,5 +26,6 @@ void net_hub_info(Monitor *mon);
 int net_hub_id_for_client(NetClientState *nc, unsigned int *id);
 void net_hub_check_clients(void);
 NetClientState *net_hub_port_find(unsigned int hub_id);
+bool net_hub_port_peer_nc(NetClientState *nc);
 
 #endif /* NET_HUB_H */
-- 
1.7.10.4