2 * cdp.c - cdp protocol plug-in
4 * Copyright (c) 2011-2018 by Cisco and/or its affiliates.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
18 #include <vnet/vnet.h>
19 #include <vnet/plugin/plugin.h>
22 #include <vlibapi/api.h>
23 #include <vlibmemory/api.h>
24 #include <vpp/app/version.h>
26 /* define message IDs */
27 #include <cdp/cdp_msg_enum.h>
29 /* define message structures */
31 #include <cdp/cdp_all_api_h.h>
34 /* define generated endian-swappers */
36 #include <cdp/cdp_all_api_h.h>
39 /* instantiate all the print functions we know about */
40 #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
42 #include <cdp/cdp_all_api_h.h>
45 /* Get the API version number */
46 #define vl_api_version(n,v) static u32 api_version=(v);
47 #include <cdp/cdp_all_api_h.h>
51 * A handy macro to set up a message reply.
52 * Assumes that the following variables are available:
53 * mp - pointer to request message
54 * rmp - pointer to reply message type
58 #define REPLY_MACRO(t) \
60 unix_shared_memory_queue_t * q = \
61 vl_api_client_index_to_input_queue (mp->client_index); \
65 rmp = vl_msg_api_alloc (sizeof (*rmp)); \
66 rmp->_vl_msg_id = ntohs((t)+cm->msg_id_base); \
67 rmp->context = mp->context; \
68 rmp->retval = ntohl(rv); \
70 vl_msg_api_send_shmem (q, (u8 *)&rmp); \
74 /* List of message types that this plugin understands */
76 #define foreach_cdp_plugin_api_msg \
77 _(CDP_ENABLE_DISABLE, cdp_enable_disable)
79 /* Action function shared between message handler and debug CLI */
82 cdp_enable_disable (cdp_main_t * cm, int enable_disable)
87 vlib_process_signal_event (cm->vlib_main, cdp_process_node.index,
90 vlib_process_signal_event (cm->vlib_main, cdp_process_node.index,
91 CDP_EVENT_DISABLE, 0);
92 cm->enabled = enable_disable;
98 cdp_command_fn (vlib_main_t * vm,
99 unformat_input_t * input, vlib_cli_command_t * cmd)
101 cdp_main_t *cm = &cdp_main;
102 int enable_disable = 1;
106 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
108 if (unformat (input, "disable"))
110 else if (unformat (input, "enable"))
116 rv = cdp_enable_disable (cm, enable_disable);
124 return clib_error_return (0, "cdp_enable_disable returned %d", rv);
130 VLIB_CLI_COMMAND (cdp_command, static) =
133 .short_help = "cdp enable | disable",
134 .function = cdp_command_fn,
138 /* API message handler */
139 static void vl_api_cdp_enable_disable_t_handler
140 (vl_api_cdp_enable_disable_t * mp)
142 vl_api_cdp_enable_disable_reply_t *rmp;
143 cdp_main_t *cm = &cdp_main;
146 rv = cdp_enable_disable (cm, (int) (mp->enable_disable));
148 REPLY_MACRO (VL_API_CDP_ENABLE_DISABLE_REPLY);
151 /* Set up the API message handling tables */
152 static clib_error_t *
153 cdp_plugin_api_hookup (vlib_main_t * vm)
155 cdp_main_t *cm = &cdp_main;
157 vl_msg_api_set_handlers((VL_API_##N + cm->msg_id_base), \
159 vl_api_##n##_t_handler, \
161 vl_api_##n##_t_endian, \
162 vl_api_##n##_t_print, \
163 sizeof(vl_api_##n##_t), 1);
164 foreach_cdp_plugin_api_msg;
170 #define vl_msg_name_crc_list
171 #include <cdp/cdp_all_api_h.h>
172 #undef vl_msg_name_crc_list
175 setup_message_id_table (cdp_main_t * cm, api_main_t * am)
177 #define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + cm->msg_id_base);
178 foreach_vl_msg_name_crc_cdp;
182 static clib_error_t *
183 cdp_init (vlib_main_t * vm)
185 cdp_main_t *cm = &cdp_main;
186 clib_error_t *error = 0;
191 name = format (0, "cdp_%08x%c", api_version, 0);
193 /* Ask for a correctly-sized block of API message decode slots */
194 cm->msg_id_base = vl_msg_api_get_msg_ids
195 ((char *) name, VL_MSG_FIRST_AVAILABLE);
197 error = cdp_plugin_api_hookup (vm);
199 /* Add our API messages to the global name_crc hash table */
200 setup_message_id_table (cm, &api_main);
207 VLIB_INIT_FUNCTION (cdp_init);
210 VLIB_PLUGIN_REGISTER () =
212 .version = VPP_BUILD_VER,
217 * fd.io coding-style-patch-verification: ON
220 * eval: (c-set-style "gnu")