/* *------------------------------------------------------------------ * 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. *------------------------------------------------------------------ */ #ifndef _IGMP_H_ #define _IGMP_H_ #include #include #include #include #include #include #include #include #include #include /** * RFC 3376 Section 8.1 */ #define IGMP_DEFAULT_ROBUSTNESS_VARIABLE (2) #define IGMP_DBG(...) \ vlib_log_debug (igmp_main.logger, __VA_ARGS__); /** * General Query address - 224.0.0.1 * Membership Report address - 224.0.0.22 * SSM default range 232/8 */ #if CLIB_ARCH_IS_BIG_ENDIAN #define IGMP_GENERAL_QUERY_ADDRESS (0xE0000001) #define IGMP_MEMBERSHIP_REPORT_ADDRESS (0xE0000016) #define IGMP_SSM_DEFAULT (0xE8000000) #else #define IGMP_GENERAL_QUERY_ADDRESS (0x010000E0) #define IGMP_MEMBERSHIP_REPORT_ADDRESS (0x160000E0) #define IGMP_SSM_DEFAULT (0x000000E8) #endif /** helper macro to get igmp mebership group from pointer plus offset */ #define group_ptr(p, l) ((igmp_membership_group_v3_t *)((u8*)(p) + (l))) #define group_cptr(p, l) ((const igmp_membership_group_v3_t *)((u8*)(p) + (l))) /** * collection of data related to IGMP */ typedef struct igmp_main_t_ { /** * API base message ID */ u16 msg_id_base; uword *igmp_api_client_by_client_index; /** * API client registered for events */ vpe_client_registration_t *api_clients; /** * per-interface DB of configs */ u32 *igmp_config_by_sw_if_index; /** * the number of igmp configs for each mfib_index (VRF) */ u32 *n_configs_per_mfib_index; /** * logger - VLIB log class */ vlib_log_class_t logger; /** * pool of configs */ igmp_config_t *configs; /** * pool of groups */ igmp_group_t *groups; /** * pool of sources */ igmp_src_t *srcs; } igmp_main_t; extern igmp_main_t igmp_main; /** * @brief IGMP interface enable/disable * @param sw_if_index - Interface * @param enable - enable/disable * @param mode - Host or router */ int igmp_enable_disable (u32 sw_if_index, u8 enable, igmp_mode_t mode); /** * @brief igmp listen * Called by a host to request reception of multicast packets * @param vm - vlib main * @param filter - Filter mode * @param sw_if_index - interface sw_if_index * @param saddr - source address * @param gaddr - group address * * Add/del (S,G) on an interface. * send a status change report from the interface. */ int igmp_listen (vlib_main_t * vm, igmp_filter_mode_t filter, u32 sw_if_index, const ip46_address_t * saddr, const ip46_address_t * gaddr); /** * @brief Send an IGMP event to listening parties * @param filter mode * @param sw_if_index * @param saddr * @param gaddr */ void igmp_event (igmp_filter_mode_t filter, u32 sw_if_index, const ip46_address_t * saddr, const ip46_address_t * gaddr); #endif /* _IGMP_H_ */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */