/* IBM_PROLOG_BEGIN_TAG                                                   */
/* This is an automatically generated prolog.                             */
/*                                                                        */
/* bos720 src/bos/kernext/inet/igmp.h 1.6.1.2                             */
/*                                                                        */
/* Licensed Materials - Property of IBM                                   */
/*                                                                        */
/* COPYRIGHT International Business Machines Corp. 1988,1993              */
/* All Rights Reserved                                                    */
/*                                                                        */
/* US Government Users Restricted Rights - Use, duplication or            */
/* disclosure restricted by GSA ADP Schedule Contract with IBM Corp.      */
/*                                                                        */
/* IBM_PROLOG_END_TAG                                                     */
/* @(#)90       1.6.1.2  src/bos/kernext/inet/igmp.h, sysxinet, bos720 7/15/11 02:38:14 */
/*
 *   COMPONENT_NAME: SYSXINET
 *
 *   FUNCTIONS: 
 *
 *   ORIGINS: 26,27,85,89
 *
 *
 *   (C) COPYRIGHT International Business Machines Corp. 1988,1996
 *   All Rights Reserved
 *   Licensed Materials - Property of IBM
 *   US Government Users Restricted Rights - Use, duplication or
 *   disclosure restricted by GSA ADP Schedule Contract with IBM Corp.
 */
/*
 * (c) Copyright 1990, 1991, 1992, 1993 OPEN SOFTWARE FOUNDATION, INC.
 * ALL RIGHTS RESERVED
 */
/*
 * OSF/1 1.2
 */
/*
 * Internet Group Management Protocol (IGMP) definitions.
 *
 * Written by Steve Deering, Stanford, May 1988.
 *
 * MULTICAST 1.1
 */

/*
 * IGMP packet format.
 */
struct igmp {
	u_char		igmp_type;	/* version & type of IGMP message  */
	u_char		igmp_code;	/* unused, should be zero          */
	u_short		igmp_cksum;	/* IP-style checksum               */
	struct in_addr igmp_group;	/* group address being reported    */
};					/*  (zero for queries)             */

struct igmpv3_report {
	u_char		igmp_type;	/* type of IGMP message  */
	u_char		igmp_code;	/* unused, should be zero          */
	u_short		igmp_cksum;	/* IP-style checksum               */
	u_short		igmp_resv;	/* Reserved, should be zero */
	u_short		igmp_ng;	/* Number of group records */
};

struct igmpv3_group {
	u_char		grp_type;	/* Group record type */
	u_char		grp_auxlen;	/* Aux data length, should be zero */
	u_short		grp_ns;		/* Number of sources */
	struct in_addr grp_maddr;	/* Multicast address */
};

struct in_addr *grp_src;	/* Source address in report/query */

struct igmpv3_query {
	u_char		igmp_type;	/* type of IGMP message  */
	u_char		igmp_code;	/* Max Resp Code         */
	u_short		igmp_cksum;	/* IP-style checksum     */
	struct in_addr igmp_group;	/* group address being queried    */
	unsigned int	
	igmp_resv:4,
	igmp_s:1, 	/* S flag */
	igmp_qrv:3, 	/* Querier's robustness variable */
	igmp_qqic:8, 	/* Querier's query interval code */
	igmp_ns:16;	/* Number of sources */
};

#define IGMP_MINLEN		     8
#define IGMPV3_MINLEN		     12

#define IGMP_HOST_MEMBERSHIP_QUERY   0x11  /* message types, incl. version */
#define IGMP_HOST_MEMBERSHIP_REPORT  0x12
#define IGMP_DVMRP		     0x13	/* for experimental multicast   */
						/*  routing protocol            */
#define IGMP_HOST_NEW_MEMBERSHIP_REPORT 0x16
#define IGMP_HOST_LEAVE_MESSAGE      0x17
#define IGMP_HOST_V3_MEMBERSHIP_REPORT 0x22
#define IGMP_MTRACE		     0x1f  /* mcast traceroute messages    */
#define IGMP_MTRACE_RESP	     0x1e  /* traceroute resp. (to sender) */

#define IGMP_MAX_HOST_REPORT_DELAY   10	/* max delay for response to    */
					/*  query (in seconds)          */
#define IGMPV3_MAX_HOST_REPORT_DELAY   1    /* max delay for V3 response */
#define IGMP_TIMER_SCALE     10	/* denotes that the igmp->timer filed */
				/*specifies time in 10th os seconds */

#define IGMP_DELAYING_MEMBER                     1
#define IGMP_IDLE_MEMBER                         2
#define IGMP_LAZY_MEMBER                         3
#define IGMP_SLEEPING_MEMBER                     4
#define IGMP_AWAKENING_MEMBER                    5


#define IGMP_OLD_ROUTER                          0
#define IGMP_NEW_ROUTER                          1
#define IGMP_V3_ROUTER                           2

#define MODE_IS_INCLUDE				1
#define MODE_IS_EXCLUDE				2
#define CHANGE_TO_INCLUDE_MODE			3
#define CHANGE_TO_EXCLUDE_MODE			4
#define ALLOW_NEW_SOURCES			5
#define BLOCK_OLD_SOURCES			6
#define SOURCELIST_CHANGE	(MODE_IS_INCLUDE|| MODE_IS_EXCLUDE)

#define STATE_CHANGE				0
#define GENERAL_QUERY				1
#define GROUP_QUERY				2

#define IGMP_AGE_THRESHOLD		         520

#ifdef IGMP_STATES
static char	*tostate[] = {
	"", "DELAYING_MEMBER", "IDLE", "LAZY", "SLEEPING",
	"AWAKENING" };


#endif /* IGMP_STATES */

#ifdef _KERNEL
#ifdef IP_MULTICAST
void	igmp_init();
void	igmp_input(struct mbuf *, int);
void	igmp_joingroup(struct in_multi *);
void	igmp_leavegroup(struct in_multi *);
void	igmp_fasttimo();
void	igmp_slowtimo();
struct router_info *find_rti(struct ifnet *);
int	fill_rti(struct in_multi *);
void	igmp_sendpkt(struct in_multi *, int);
void	igmp_sendleave(struct in_multi *);
void	cancel_igmp_timers(struct ifnet *);
void	igmpv3_update(struct in_multi *);
void	igmpv3_sendpkt(struct in_multi *, int);
void	igmpv3_mergequery(struct in_multi *);
void	update_list(struct in_multi *);
#endif /* IP_MULTICAST */

extern simple_lock_data_t         rti_lock; /* lock for rti list */
#define RTI_LOCKINIT()     {	\
	lock_alloc(&rti_lock, LOCK_ALLOC_PIN, RTI_LOCK_FAMILY, -1);	\
	simple_lock_init(&rti_lock);	\
}
#define RTI_LOCK_DECL()    int	_rtil;
#define RTI_LOCK()         _rtil = disable_lock(PL_IMP, &rti_lock)
#define RTI_UNLOCK()       unlock_enable(_rtil, &rti_lock)

#endif /* _KERNEL */