mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-24 10:41:54 +00:00
114 lines
2.7 KiB
C
114 lines
2.7 KiB
C
/*
|
|
* BIRD --IGMP protocol
|
|
*
|
|
* (c) 2016 Ondrej Hlavaty <aearsis@eideo.cz>
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_IGMP_H_
|
|
#define _BIRD_IGMP_H_
|
|
|
|
#include "nest/bird.h"
|
|
#include "nest/iface.h"
|
|
#include "nest/locks.h"
|
|
#include "nest/protocol.h"
|
|
#include "nest/route.h"
|
|
#include "conf/conf.h"
|
|
#include "lib/hash.h"
|
|
#include "lib/socket.h"
|
|
#include "filter/filter.h"
|
|
|
|
#include <linux/mroute.h>
|
|
|
|
|
|
struct igmp_iface_config
|
|
{
|
|
struct iface_patt i;
|
|
|
|
/* These are configurable */
|
|
uint robustness, startup_query_cnt, last_member_query_cnt;
|
|
btime query_int, query_response_int, startup_query_int,
|
|
last_member_query_int;
|
|
|
|
/* These are not */
|
|
btime group_memb_int, other_querier_int;
|
|
};
|
|
|
|
struct igmp_config
|
|
{
|
|
struct proto_config c;
|
|
list patt_list; /* list of ifaces (struct igmp_iface_config) */
|
|
|
|
struct igmp_iface_config default_iface_cf;
|
|
};
|
|
|
|
struct igmp_grp
|
|
{
|
|
struct igmp_grp *next; /* member of igmp_iface->groups */
|
|
struct igmp_iface *ifa;
|
|
|
|
ip4_addr ga;
|
|
uint join_state;
|
|
timer *join_timer, *v1_host_timer, *rxmt_timer;
|
|
};
|
|
|
|
#define IGMP_JS_NOMEMB 0
|
|
#define IGMP_JS_MEMB 1
|
|
#define IGMP_JS_V1MEMB 2
|
|
#define IGMP_JS_CHECK 3
|
|
|
|
struct igmp_iface
|
|
{
|
|
node n; /* member of igmp_proto->iface_list */
|
|
struct igmp_proto *proto;
|
|
struct iface *iface;
|
|
struct igmp_iface_config *cf;
|
|
|
|
sock *sk; /* The one receiving packets */
|
|
uint query_state; /* initial / querier / non-querier */
|
|
vifi_t vifi; /* VIF containing just this device */
|
|
|
|
HASH(struct igmp_grp) groups;
|
|
|
|
u32 gen_id;
|
|
uint startup_query_cnt; /* Remaining startup queries to send */
|
|
timer *gen_query, *other_present;
|
|
};
|
|
|
|
#define IGMP_QS_INIT 0
|
|
#define IGMP_QS_QUERIER 1
|
|
#define IGMP_QS_NONQUERIER 2
|
|
|
|
struct igmp_proto
|
|
{
|
|
struct proto p;
|
|
struct igmp_config *cf;
|
|
|
|
struct channel *mreq_channel; /* Channel to multicast requests table */
|
|
|
|
list iface_list; /* list of managed ifaces (struct igmp_iface) */
|
|
};
|
|
|
|
#define IGMP_PROTO 2
|
|
|
|
/* igmp.c */
|
|
int igmp_query_received(struct igmp_iface *ifa, ip4_addr from);
|
|
int igmp_membership_report(struct igmp_grp *grp, u8 igmp_version, u8 resp_time);
|
|
int igmp_leave(struct igmp_grp *grp, u8 resp_time);
|
|
|
|
struct igmp_grp *igmp_grp_new(struct igmp_iface *ifa, ip4_addr *ga);
|
|
struct igmp_grp *igmp_grp_find(struct igmp_iface *ifa, ip4_addr *ga);
|
|
|
|
void igmp_config_init(struct igmp_config *cf);
|
|
void igmp_config_finish(struct proto_config *cf);
|
|
void igmp_iface_config_init(struct igmp_iface_config * ifc);
|
|
void igmp_iface_config_finish(struct igmp_iface_config * ifc);
|
|
|
|
/* packets.c */
|
|
int igmp_sk_open(struct igmp_iface * ifa);
|
|
int igmp_tx_query(struct igmp_iface *ifa, ip4_addr addr);
|
|
|
|
|
|
#endif
|