Add API support for LLDP config/interface set

Add API methods to configure LLDP and set interface to enable/disable.
Also add port description TLV for LLDP.

Change-Id: Ib959d488c2ab8a0069f143558871f41fcc43a5d3
Signed-off-by: Steve Shin <jonshin@cisco.com>

1 files changed, 144 insertions, 0 deletions

diff --git a/src/vnet/lldp/lldp_api.c b/src/vnet/lldp/lldp_api.c
new file mode 100644
index 00000000000..bdada8970a4
--- /dev/null
+++ b/src/vnet/lldp/lldp_api.c
@@ -0,0 +1,144 @@
+/*
+ *------------------------------------------------------------------
+ * lldp_api.c - lldp api
+ *
+ * Copyright (c) 2017 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 <vnet/vnet.h>
+#include <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/lldp/lldp.h>
+
+#include <vnet/vnet_msg_enum.h>
+
+#define vl_typedefs		/* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_typedefs
+
+#define vl_endianfun		/* define message structures */
+#include <vnet/vnet_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <vnet/vnet_all_api_h.h>
+#undef vl_printfun
+
+#include <vlibapi/api_helper_macros.h>
+
+#define foreach_vpe_api_msg                             \
+_(LLDP_CONFIG, lldp_config)                             \
+_(SW_INTERFACE_SET_LLDP, sw_interface_set_lldp)
+
+static void
+vl_api_lldp_config_t_handler (vl_api_lldp_config_t * mp)
+{
+  vl_api_lldp_config_reply_t *rmp;
+  int rv = 0;
+  u8 *sys_name = 0;
+
+  vec_validate (sys_name, strlen ((char *) mp->system_name) - 1);
+  strncpy ((char *) sys_name, (char *) mp->system_name, vec_len (sys_name));
+
+  if (lldp_cfg_set (&sys_name, ntohl (mp->tx_hold),
+		    ntohl (mp->tx_interval)) != lldp_ok)
+    {
+      vec_free (sys_name);
+      rv = VNET_API_ERROR_INVALID_VALUE;
+    }
+
+  REPLY_MACRO (VL_API_LLDP_CONFIG_REPLY);
+}
+
+static void
+vl_api_sw_interface_set_lldp_t_handler (vl_api_sw_interface_set_lldp_t * mp)
+{
+  vl_api_sw_interface_set_lldp_reply_t *rmp;
+  int rv = 0;
+  u8 *port_desc = 0;
+
+  vec_validate (port_desc, strlen ((char *) mp->port_desc) - 1);
+  strncpy ((char *) port_desc, (char *) mp->port_desc, vec_len (port_desc));
+
+  VALIDATE_SW_IF_INDEX (mp);
+
+  if (lldp_cfg_intf_set (ntohl (mp->sw_if_index), &port_desc,
+			 mp->enable) != lldp_ok)
+    {
+      vec_free (port_desc);
+      rv = VNET_API_ERROR_INVALID_VALUE;
+    }
+
+  BAD_SW_IF_INDEX_LABEL;
+
+  REPLY_MACRO (VL_API_SW_INTERFACE_SET_LLDP_REPLY);
+}
+
+
+/*
+ *  * lldp_api_hookup
+ *   * Add vpe's API message handlers to the table.
+ *    * vlib has alread mapped shared memory and
+ *     * added the client registration handlers.
+ *      * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process()
+ *       */
+#define vl_msg_name_crc_list
+#include <vnet/vnet_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (api_main_t * am)
+{
+#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id);
+  foreach_vl_msg_name_crc_lldp;
+#undef _
+}
+
+static clib_error_t *
+lldp_api_hookup (vlib_main_t * vm)
+{
+  api_main_t *am = &api_main;
+
+#define _(N,n)                                                  \
+    vl_msg_api_set_handlers(VL_API_##N, #n,                     \
+                           vl_api_##n##_t_handler,              \
+                           vl_noop_handler,                     \
+                           vl_api_##n##_t_endian,               \
+                           vl_api_##n##_t_print,                \
+                           sizeof(vl_api_##n##_t), 1);
+  foreach_vpe_api_msg;
+#undef _
+
+  /*
+   *    * Set up the (msg_name, crc, message-id) table
+   *       */
+  setup_message_id_table (am);
+
+  return 0;
+}
+
+VLIB_API_INIT_FUNCTION (lldp_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */