2 *------------------------------------------------------------------
3 * Copyright (c) 2017 Cisco and/or its affiliates.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at:
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 *------------------------------------------------------------------
21 #include <vlib/vlib.h>
22 #include <vnet/ip/ip.h>
23 #include <vlibapi/api_helper_macros.h>
24 #include <vnet/ip/igmp_packet.h>
25 #include <vnet/adj/adj_mcast.h>
26 #include <igmp/igmp_format.h>
28 #define IGMP_QUERY_TIMER (60)
29 #define IGMP_SRC_TIMER (3 * IGMP_QUERY_TIMER)
30 #define IGMP_DEFAULT_ROBUSTNESS_VARIABLE (2)
32 #define ENABLE_IGMP_DBG 0
34 #if ENABLE_IGMP_DBG == 1
35 #define IGMP_DBG(...) clib_warning(__VA_ARGS__)
38 #endif /* ENABLE_IGMP_DBG */
40 /** General Query address - 224.0.0.1 */
41 #define IGMP_GENERAL_QUERY_ADDRESS (0xE0000001)
42 /** Membership Report address - 224.0.0.22 */
43 #define IGMP_MEMBERSHIP_REPORT_ADDRESS (0xE0000016)
45 /** helper macro to get igmp mebership group from pointer plus offset */
46 #define group_ptr(p, l) ((igmp_membership_group_v3_t *)((char*)p + l))
50 IGMP_PROCESS_EVENT_UPDATE_TIMER = 1,
51 } igmp_process_event_t;
61 struct igmp_config_t_;
63 typedef struct igmp_config_t_ igmp_config_t;
67 typedef struct igmp_group_t_ igmp_group_t;
69 /** \brief create message
70 @param b - vlib buffer
71 @param config - igmp configuration
72 @param group - igmp group
74 Populate supplied bufefr with IGMP message.
76 typedef void (create_msg_t) (vlib_buffer_t * b, igmp_config_t * config,
77 igmp_group_t * group);
80 @param data - key data
81 @param group_type - membership group type
85 u64 data[2]; /*!< ip46_address_t.as_u64 */
86 u64 group_type; /*!< zero in case of source key */
89 /** \brief igmp source
90 @param addr - ip4/6 source address
91 @param exp_time - expiration time
92 @param key - pointer to key
103 /** \brief igmp group
104 @param addr - ip4/6 group address
105 @param exp_time - expiration time
106 @param key - pointer to key
107 @param type - membership group type
108 @param n_srcs - number of sources
109 @param flags - igmp group flags
110 @param igmp_src_by_key - source by key hash
111 @param srcs - pool of sources
113 typedef struct igmp_group_t_
121 igmp_membership_group_v3_type_t type;
126 /** reponse to query was received */
127 #define IGMP_GROUP_FLAG_QUERY_RESP_RECVED (1 << 0)
129 uword *igmp_src_by_key;
133 /** \brief igmp configuration
134 @param sw_if_index - interface sw_if_index
135 @param adj_index - adjacency index
136 @param cli_api_configured - if zero, an igmp report was received
137 @param next_create_msg - specify next igmp message
138 @param igmp_ver - igmp version
139 @param robustness_var - robustness variable
140 @param flags - igmp configuration falgs
141 @param igmp_group_by_key - group by key hash
142 @param groups - pool of groups
144 typedef struct igmp_config_t_
148 adj_index_t adj_index;
150 u8 cli_api_configured;
152 create_msg_t *next_create_msg;
159 #define IGMP_CONFIG_FLAG_QUERY_RESP_RECVED (1 << 0)
160 #define IGMP_CONFIG_FLAG_CAN_SEND_REPORT (1 << 1)
162 uword *igmp_group_by_key;
164 igmp_group_t *groups;
167 struct igmp_timer_t_;
169 typedef struct igmp_timer_t_ igmp_timer_t;
180 igmp_membership_group_v3_type_t type;
181 } igmp_report_type_info_t;
184 @param msg_id_base - API message ID base
185 @param igmp_api_client_by_client_index - get api client by client_index
186 @param api_clients - pool of api clients registered for join/leave notifications
187 @param igmp_config_by_sw_if_index - get config index by config key
188 @param configs - pool of igmp configurations
189 @param buffers - buffer cache
190 @param timers - pool of igmp timers
191 @param type_infos - igmp type info
192 @param report_type_infos - igmp report type info
193 @param type_info_by_type -
194 @param report_type_info_by_report_type -
195 @param general_query_address - 224.0.0.1
196 @param membership_report_address - 224.0.0.22
198 typedef struct igmp_main_t_
202 uword *igmp_api_client_by_client_index;
204 vpe_client_registration_t *api_clients;
206 uword *igmp_config_by_sw_if_index;
208 igmp_config_t *configs;
212 igmp_timer_t *timers;
214 igmp_type_info_t *type_infos;
215 igmp_report_type_info_t *report_type_infos;
217 uword *type_info_by_type;
218 uword *report_type_info_by_report_type;
221 extern igmp_main_t igmp_main;
223 /** \brief igmp timer function
224 @param vm - vlib main
225 @param rt - vlib runtime node
226 @param im - igmp main
227 @param timer - igmp timer
229 typedef void (igmp_timer_function_t) (vlib_main_t * vm,
230 vlib_node_runtime_t * rt,
231 igmp_main_t * im, igmp_timer_t * timer);
233 /** \brief igmp timer
234 @param exp_time - expiration time
235 @param func - function to call on timer expiration
236 @param sw_if_index - interface sw_if_index
237 @param data - custom data
239 typedef struct igmp_timer_t_
242 igmp_timer_function_t *func;
248 extern vlib_node_registration_t igmp_timer_process_node;
249 extern vlib_node_registration_t igmp_input_node;
250 extern vlib_node_registration_t igmp_parse_query_node;
251 extern vlib_node_registration_t igmp_parse_report_node;
253 /** \brief igmp listen
254 @param vm - vlib main
255 @param enable - 0 == remove (S,G), else add (S,G)
256 @param sw_if_index - interface sw_if_index
257 @param saddr - source address
258 @param gaddr - group address
259 @param cli_api_configured - if zero, an igmp report has been received on interface
261 Add/del (S,G) on an interface. If user configured,
262 send a status change report from the interface.
263 If a report was received on interface notify registered api clients.
265 int igmp_listen (vlib_main_t * vm, u8 enable, u32 sw_if_index,
266 ip46_address_t saddr, ip46_address_t gaddr,
267 u8 cli_api_configured);
269 /** \brief igmp clear config
270 @param config - igmp configuration
272 Clear all (S,G)s on specified config and remove this config from pool.
274 void igmp_clear_config (igmp_config_t * config);
276 /** \brief igmp clear group
277 @param config - igmp configuration
278 @param group - the group to be removed
280 Remove this group from interface (specified by configuration).
282 void igmp_clear_group (igmp_config_t * config, igmp_group_t * group);
284 /** \brief igmp sort timers
285 @param timers - pool of igmp timers
287 Sort igmp timers, so that the first to expire is at end.
289 void igmp_sort_timers (igmp_timer_t * timers);
291 /** \brief igmp create int timer
292 @param time - expiration time (at this time the timer will expire)
293 @param sw_if_index - interface sw_if_index
294 @param func - function to all after timer expiration
297 Creates new interface timer. Delayed reports, query msg, query resp.
299 void igmp_create_int_timer (f64 time, u32 sw_if_index,
300 igmp_timer_function_t * func);
302 /** \brief igmp create group timer
303 @param time - expiration time (at this time the timer will expire)
304 @param sw_if_index - interface sw_if_index
305 @param gkey - key to find the group by
306 @param func - function to all after timer expiration
308 Creates new group timer.
310 void igmp_create_group_timer (f64 time, u32 sw_if_index, igmp_key_t * gkey,
311 igmp_timer_function_t * func);
313 /** \brief igmp create group timer
314 @param time - expiration time (at this time the timer will expire)
315 @param sw_if_index - interface sw_if_index
316 @param gkey - key to find the group by
317 @param skey - key to find the source by
318 @param func - function to all after timer expiration
320 Creates new source timer.
322 void igmp_create_src_timer (f64 time, u32 sw_if_index, igmp_key_t * gkey,
323 igmp_key_t * skey, igmp_timer_function_t * func);
325 /** \brief igmp send query (igmp_timer_function_t)
328 If the timer holds group key, send Group-Specific query,
329 else send General query.
331 void igmp_send_query (vlib_main_t * vm, vlib_node_runtime_t * rt,
332 igmp_main_t * im, igmp_timer_t * timer);
334 /** \brief igmp query response expiration (igmp_timer_function_t)
336 If a response to a query didn't come in time, remove (S,G)s.
338 void igmp_query_resp_exp (vlib_main_t * vm, vlib_node_runtime_t * rt,
339 igmp_main_t * im, igmp_timer_t * timer);
341 /** \brief igmp send report (igmp_timer_function_t)
343 Send igmp membership report.
345 void igmp_send_report (vlib_main_t * vm, vlib_node_runtime_t * rt,
346 igmp_main_t * im, igmp_timer_t * timer);
348 /** \brief igmp send state changed (igmp_timer_function_t)
350 Send report if an (S,G) filter has changed.
352 void igmp_send_state_changed (vlib_main_t * vm, vlib_node_runtime_t * rt,
353 igmp_main_t * im, igmp_timer_t * timer);
355 /** \brief igmp source expiration (igmp_timer_function_t)
357 Remove expired (S,G) from group.
359 void igmp_src_exp (vlib_main_t * vm, vlib_node_runtime_t * rt,
360 igmp_main_t * im, igmp_timer_t * timer);
362 static inline igmp_type_info_t *
363 igmp_get_type_info (igmp_main_t * im, u32 type)
367 p = hash_get (im->type_info_by_type, type);
368 return p ? vec_elt_at_index (im->type_infos, p[0]) : 0;
371 static inline igmp_report_type_info_t *
372 igmp_get_report_type_info (igmp_main_t * im, u8 report_type)
376 p = hash_get (im->report_type_info_by_report_type, report_type);
377 return p ? vec_elt_at_index (im->report_type_infos, p[0]) : 0;
380 /** \brief igmp event
381 @param im - igmp main
382 @param config - igmp configuration
383 @param group - igmp group
386 Notify registered api clients of (S,G) filter update.
388 void igmp_event (igmp_main_t * im, igmp_config_t * config,
389 igmp_group_t * group, igmp_src_t * src);
393 IGMP_NEXT_IP4_REWRITE_MCAST_NODE,
394 IGMP_NEXT_IP6_REWRITE_MCAST_NODE,
398 /** \brief igmp config lookup
399 @param im - igmp main
400 @param sw_if_index - interface sw_if_index
402 always_inline igmp_config_t *
403 igmp_config_lookup (igmp_main_t * im, u32 sw_if_index)
406 igmp_config_t *config = NULL;
408 p = hash_get_mem (im->igmp_config_by_sw_if_index, &sw_if_index);
410 config = vec_elt_at_index (im->configs, p[0]);
415 /** \brief igmp group lookup
416 @param config - igmp configuration
417 @param key - igmp key
419 always_inline igmp_group_t *
420 igmp_group_lookup (igmp_config_t * config, igmp_key_t * key)
423 igmp_group_t *group = NULL;
427 p = hash_get_mem (config->igmp_group_by_key, key);
429 group = vec_elt_at_index (config->groups, p[0]);
434 /** \brief igmp group lookup
435 @param group - igmp group
436 @param key - igmp key
438 always_inline igmp_src_t *
439 igmp_src_lookup (igmp_group_t * group, igmp_key_t * key)
442 igmp_src_t *src = NULL;
446 p = hash_get_mem (group->igmp_src_by_key, key);
448 src = vec_elt_at_index (group->srcs, p[0]);
453 #endif /* _IGMP_H_ */
456 * fd.io coding-style-patch-verification: ON
459 * eval: (c-set-style "gnu")