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/*
*------------------------------------------------------------------
* 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 <vlib/vlib.h>
#include <vnet/ip/ip.h>
#include <vlibapi/api_helper_macros.h>
#include <vnet/ip/igmp_packet.h>
#include <vnet/adj/adj_mcast.h>
#include <igmp/igmp_types.h>
#include <igmp/igmp_format.h>
#include <igmp/igmp_timer.h>
#include <igmp/igmp_group.h>
#include <igmp/igmp_config.h>
/**
* 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 membership 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:
*/
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