[PATCH for 7.0 V10 3/6] hmp-commands: Add new HMP command for filter passthrough

[Zhang Chen <chen.zhang@intel.com>]

Add hmp_passthrough_filter_add and hmp_passthrough_filter_del make user
can maintain object network passthrough list in human monitor

Signed-off-by: Zhang Chen <chen.zhang@intel.com>
---
 hmp-commands.hx       | 26 ++++++++++++++++++
 include/monitor/hmp.h |  2 ++
 monitor/hmp-cmds.c    | 63 +++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 91 insertions(+)

diff --git a/hmp-commands.hx b/hmp-commands.hx
index 70a9136ac2..e57e099361 100644
--- a/hmp-commands.hx
+++ b/hmp-commands.hx
@@ -1292,6 +1292,32 @@ SRST
   Remove host network device.
 ERST
 
+    {
+        .name       = "passthrough_filter_add",
+        .args_type  = "protocol:s?,object-name:s,src:s?,dst:s?",
+        .params     = "[protocol] object-name [src] [dst]",
+        .help       = "Add network passthrough rule to object passthrough list",
+        .cmd        = hmp_passthrough_filter_add,
+    },
+
+SRST
+``passthrough_filter_add``
+  Add network stream to object passthrough list.
+ERST
+
+    {
+        .name       = "passthrough_filter_del",
+        .args_type  = "protocol:s?,object-name:s,src:s?,dst:s?",
+        .params     = "[protocol] object-name [src] [dst]",
+        .help       = "Delete network passthrough rule from object passthrough list",
+        .cmd        = hmp_passthrough_filter_del,
+    },
+
+SRST
+``passthrough_filter_del``
+  Delete network stream from object passthrough list.
+ERST
+
     {
         .name       = "object_add",
         .args_type  = "object:S",
diff --git a/include/monitor/hmp.h b/include/monitor/hmp.h
index 96d014826a..020b86212e 100644
--- a/include/monitor/hmp.h
+++ b/include/monitor/hmp.h
@@ -78,6 +78,8 @@ void hmp_device_del(Monitor *mon, const QDict *qdict);
 void hmp_dump_guest_memory(Monitor *mon, const QDict *qdict);
 void hmp_netdev_add(Monitor *mon, const QDict *qdict);
 void hmp_netdev_del(Monitor *mon, const QDict *qdict);
+void hmp_passthrough_filter_add(Monitor *mon, const QDict *qdict);
+void hmp_passthrough_filter_del(Monitor *mon, const QDict *qdict);
 void hmp_getfd(Monitor *mon, const QDict *qdict);
 void hmp_closefd(Monitor *mon, const QDict *qdict);
 void hmp_sendkey(Monitor *mon, const QDict *qdict);
diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 9c91bf93e9..19e91f7599 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -1570,6 +1570,69 @@ void hmp_netdev_del(Monitor *mon, const QDict *qdict)
     hmp_handle_error(mon, err);
 }
 
+static IPFlowSpec *hmp_parse_IPFlowSpec(Monitor *mon, const QDict *qdict)
+{
+    IPFlowSpec *spec = g_new0(IPFlowSpec, 1);
+    g_autofree char *src = NULL, *dst = NULL;
+
+    spec->protocol = g_strdup(qdict_get_try_str(qdict, "protocol"));
+    spec->object_name = g_strdup(qdict_get_try_str(qdict, "object-name"));
+    src = g_strdup(qdict_get_try_str(qdict, "src"));
+    dst = g_strdup(qdict_get_try_str(qdict, "dst"));
+
+    if (src) {
+        spec->source = g_new0(InetSocketAddressBase, 1);
+
+        if (inet_parse_base(spec->source, src, NULL)) {
+            monitor_printf(mon, "Incorrect passthrough src address\n");
+            goto err;
+        }
+    }
+
+    if (dst) {
+        spec->destination = g_new0(InetSocketAddressBase, 1);
+
+        if (inet_parse_base(spec->destination, dst, NULL)) {
+            monitor_printf(mon, "Incorrect passthrough dst address\n");
+            goto err;
+        }
+    }
+
+    return spec;
+
+err:
+    g_free(spec->source);
+    g_free(spec->destination);
+    g_free(spec);
+    return NULL;
+}
+
+void hmp_passthrough_filter_add(Monitor *mon, const QDict *qdict)
+{
+    IPFlowSpec *spec;
+    Error *err = NULL;
+
+    spec = hmp_parse_IPFlowSpec(mon, qdict);
+    if (spec) {
+        qmp_passthrough_filter_add(spec, &err);
+    }
+
+    hmp_handle_error(mon, err);
+}
+
+void hmp_passthrough_filter_del(Monitor *mon, const QDict *qdict)
+{
+    IPFlowSpec *spec;
+    Error *err = NULL;
+
+    spec = hmp_parse_IPFlowSpec(mon, qdict);
+    if (spec) {
+        qmp_passthrough_filter_del(spec, &err);
+    }
+
+    hmp_handle_error(mon, err);
+}
+
 void hmp_object_add(Monitor *mon, const QDict *qdict)
 {
     const char *options = qdict_get_str(qdict, "object");
-- 
2.25.1