net: make nb_nics and nd_table[] static in net/net.c

Also remove the stale declaration of host_net_devices; the actual
definition was removed long ago in commit 7cc28cb06104 ("net: Remove
the deprecated 'host_net_add' and 'host_net_remove' HMP commands")

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Thomas Huth <thuth@redhat.com>

include/net/net.h

@@ -301,10 +301,6 @@ struct NICInfo {
     int nvectors;
 };
 
-extern int nb_nics;
-extern NICInfo nd_table[MAX_NICS];
-extern const char *host_net_devices[];
-
 /* from net.c */
 extern NetClientStateList net_clients;
 bool netdev_is_modern(const char *optstr);

net/net.c

@@ -77,6 +77,9 @@ static NetdevQueue nd_queue = QSIMPLEQ_HEAD_INITIALIZER(nd_queue);
 
 static GHashTable *nic_model_help;
 
+static int nb_nics;
+static NICInfo nd_table[MAX_NICS];
+
 /***********************************************************/
 /* network device redirectors */
 

system/globals.c

@@ -36,8 +36,6 @@ int display_opengl;
 const char* keyboard_layout;
 bool enable_mlock;
 bool enable_cpu_pm;
-int nb_nics;
-NICInfo nd_table[MAX_NICS];
 int autostart = 1;
 int vga_interface_type = VGA_NONE;
 bool vga_interface_created;