hmp / net: Mark host_net_add/remove as deprecated

The netdev_add and netdev_del commands should be used nowadays instead.
Signed-off-by: NThomas Huth <thuth@redhat.com>
Signed-off-by: NJason Wang <jasowang@redhat.com>

hmp-commands.hx

@@ -1296,7 +1296,7 @@ ETEXI
         .name       = "host_net_add",
         .args_type  = "device:s,opts:s?",
         .params     = "tap|user|socket|vde|netmap|bridge|vhost-user|dump [options]",
-        .help       = "add host VLAN client",
+        .help       = "add host VLAN client (deprecated, use netdev_add instead)",
         .cmd        = hmp_host_net_add,
         .command_completion = host_net_add_completion,
     },
@@ -1304,14 +1304,14 @@ ETEXI
 STEXI
 @item host_net_add
 @findex host_net_add
-Add host VLAN client.
+Add host VLAN client. Deprecated, please use @code{netdev_add} instead.
 ETEXI
 
     {
         .name       = "host_net_remove",
         .args_type  = "vlan_id:i,device:s",
         .params     = "vlan_id name",
-        .help       = "remove host VLAN client",
+        .help       = "remove host VLAN client (deprecated, use netdev_del instead)",
         .cmd        = hmp_host_net_remove,
         .command_completion = host_net_remove_completion,
     },
@@ -1319,7 +1319,7 @@ ETEXI
 STEXI
 @item host_net_remove
 @findex host_net_remove
-Remove host VLAN client.
+Remove host VLAN client. Deprecated, please use @code{netdev_del} instead.
 ETEXI
 
     {

net/net.c

@@ -45,6 +45,7 @@
 #include "qapi-visit.h"
 #include "qapi/opts-visitor.h"
 #include "sysemu/sysemu.h"
+#include "sysemu/qtest.h"
 #include "net/filter.h"
 #include "qapi/string-output-visitor.h"
 
@@ -1149,6 +1150,12 @@ void hmp_host_net_add(Monitor *mon, const QDict *qdict)
     const char *opts_str = qdict_get_try_str(qdict, "opts");
     Error *local_err = NULL;
     QemuOpts *opts;
+    static bool warned;
+
+    if (!warned && !qtest_enabled()) {
+        error_report("host_net_add is deprecated, use netdev_add instead");
+        warned = true;
+    }
 
     if (!net_host_check_device(device)) {
         monitor_printf(mon, "invalid host network device %s\n", device);
@@ -1175,6 +1182,12 @@ void hmp_host_net_remove(Monitor *mon, const QDict *qdict)
     NetClientState *nc;
     int vlan_id = qdict_get_int(qdict, "vlan_id");
     const char *device = qdict_get_str(qdict, "device");
+    static bool warned;
+
+    if (!warned && !qtest_enabled()) {
+        error_report("host_net_remove is deprecated, use netdev_del instead");
+        warned = true;
+    }
 
     nc = net_hub_find_client_by_name(vlan_id, device);
     if (!nc) {