arping: add arping command

Add linux similar arping command to VPP.
syntax: arping [gratuitous] <address> <interface> [repeat <count>] [interval <secs>]

Type: feature

Signed-off-by: Steven Luong <sluong@cisco.com>
Change-Id: I9267c054235207b8fae8e3f159246777eb0340dd

1 files changed, 87 insertions, 0 deletions

diff --git a/src/plugins/arping/arping_api.c b/src/plugins/arping/arping_api.c
new file mode 100644
index 00000000000..015c6148f5e
--- /dev/null
+++ b/src/plugins/arping/arping_api.c
@@ -0,0 +1,87 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2021 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vlib/pci/pci.h>
+#include <vnet/ethernet/ethernet.h>
+#include <vnet/format_fns.h>
+#include <vnet/ip/ip_types_api.h>
+
+#include <arping/arping.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+
+/* define message IDs */
+#include <arping/arping.api_enum.h>
+#include <arping/arping.api_types.h>
+
+#include <vlibapi/api_helper_macros.h>
+
+static void
+vl_api_arping_t_handler (vl_api_arping_t *mp)
+{
+  vlib_main_t *vm = vlib_get_main ();
+  arping_main_t *am = &arping_main;
+  vl_api_arping_reply_t *rmp;
+  arping_args_t args = { 0 };
+  int rv;
+
+  if (mp->sw_if_index != ~0)
+    VALIDATE_SW_IF_INDEX (mp);
+
+  ip_address_decode2 (&mp->address, &args.address);
+  args.interval = clib_net_to_host_f64 (mp->interval);
+  args.repeat = ntohl (mp->repeat);
+  args.is_garp = mp->is_garp;
+  args.sw_if_index = ntohl (mp->sw_if_index);
+  args.silence = 1;
+
+  arping_run_command (vm, &args);
+  rv = args.rv;
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO2 (VL_API_ARPING_REPLY + am->msg_id_base,
+		({ rmp->reply_count = ntohl (args.reply_count); }));
+}
+
+/* set tup the API message handling tables */
+#include <arping/arping.api.c>
+clib_error_t *
+arping_plugin_api_hookup (vlib_main_t *vm)
+{
+  arping_main_t *am = &arping_main;
+  api_main_t *vam = vlibapi_get_main ();
+
+  /* ask for a correctly-sized block of API message decode slots */
+  am->msg_id_base = setup_message_id_table ();
+
+  /* Mark API as mp safe */
+  vam->is_mp_safe[am->msg_id_base + VL_API_ARPING] = 1;
+
+  return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */