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freebsd/usr.sbin/pim6dd/defs.h
Yoshinobu Inoue 0fea3d5165 IPv6 multicast routing. 
kernel IPv6 multicast routing support.
  pim6 dense mode daemon
  pim6 sparse mode daemon
  netstat support of IPv6 multicast routing statistics

  Merging to the current and testing with other existing multicast routers
  is done by Tatsuya Jinmei <jinmei@kame.net>, who writes and maintainances
  the base code in KAME distribution.

  Make world check and kernel build check was also successful.
2000-01-28 05:10:56 +00:00

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/*
* Copyright (c) 1998 by the University of Oregon.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and
* its documentation in source and binary forms for lawful
* purposes and without fee is hereby granted, provided
* that the above copyright notice appear in all copies and that both
* the copyright notice and this permission notice appear in supporting
* documentation, and that any documentation, advertising materials,
* and other materials related to such distribution and use acknowledge
* that the software was developed by the University of Oregon.
* The name of the University of Oregon may not be used to endorse or
* promote products derived from this software without specific prior
* written permission.
*
* THE UNIVERSITY OF OREGON DOES NOT MAKE ANY REPRESENTATIONS
* ABOUT THE SUITABILITY OF THIS SOFTWARE FOR ANY PURPOSE. THIS SOFTWARE IS
* PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, TITLE, AND
* NON-INFRINGEMENT.
*
* IN NO EVENT SHALL UO, OR ANY OTHER CONTRIBUTOR BE LIABLE FOR ANY
* SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES, WHETHER IN CONTRACT,
* TORT, OR OTHER FORM OF ACTION, ARISING OUT OF OR IN CONNECTION WITH,
* THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Other copyrights might apply to parts of this software and are so
* noted when applicable.
*/
/*
* Questions concerning this software should be directed to
* Kurt Windisch (kurtw@antc.uoregon.edu)
*
* $Id: defs.h,v 1.6 1999/12/10 06:09:13 itojun Exp $
*/
/*
* Part of this program has been derived from PIM sparse-mode pimd.
* The pimd program is covered by the license in the accompanying file
* named "LICENSE.pimd".
*
* The pimd program is COPYRIGHT 1998 by University of Southern California.
*
* Part of this program has been derived from mrouted.
* The mrouted program is covered by the license in the accompanying file
* named "LICENSE.mrouted".
*
* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
* Leland Stanford Junior University.
*
* $FreeBSD$
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <errno.h>
#include <syslog.h>
#include <signal.h>
#include <string.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#if ((defined(SYSV)) || (defined(__bsdi__)) || ((defined SunOS) && (SunOS < 50)))
#include <sys/sockio.h>
#endif /* SYSV || __bsdi__ || SunOS 4.x */
#include <sys/time.h>
#include <net/if.h>
#include <net/if_var.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/icmp6.h>
#include <netinet6/in6_var.h>
#include <netinet/ip6.h>
#include <arpa/inet.h>
#include <osreldate.h>
#define rtentry kernel_rtentry
#include <net/route.h>
#undef rtentry
#include <netinet/ip_mroute.h>
#include <netinet6/ip6_mroute.h>
#include <strings.h>
#ifdef RSRR
#include <sys/un.h>
#endif /* RSRR */
typedef u_int u_int32;
typedef u_short u_int16;
typedef u_char u_int8;
#ifndef __P
#ifdef __STDC__
#define __P(x) x
#else
#define __P(x) ()
#endif
#endif
typedef void (*cfunc_t) __P((void *));
typedef void (*ihfunc_t) __P((int, fd_set *));
#include "pimdd.h"
#include "mrt.h"
#include "mld6.h"
#include "vif.h"
#include "debug.h"
#include "pathnames.h"
#ifdef RSRR
#include "rsrr.h"
#include "rsrr_var.h"
#endif /* RSRR */
/*
* Miscellaneous constants and macros
*/
/* #if (!(defined(__bsdi__)) && !(defined(KERNEL))) */
#ifndef KERNEL
#define max(a, b) ((a) < (b) ? (b) : (a))
#define min(a, b) ((a) > (b) ? (b) : (a))
#endif
/*
* Various definitions to make it working for different platforms
*/
/* The old style sockaddr definition doesn't have sa_len */
#if (defined(BSD) && (BSD >= 199006)) /* sa_len was added with 4.3-Reno */
#define HAVE_SA_LEN
#endif
/* Versions of Solaris older than 2.6 don't have routing sockets. */
/* XXX TODO: check FreeBSD version and add all other platforms */
#if ((defined(SunOS) && SunOS >=56) || (defined __FreeBSD__) || (defined IRIX) || (defined __bsdi__) || defined(__NetBSD__))
#define HAVE_ROUTING_SOCKETS
#endif
#define TRUE 1
#define FALSE 0
#define CREATE TRUE
#define DONT_CREATE FALSE
#define EQUAL(s1, s2) (strcmp((s1), (s2)) == 0)
/* obnoxious gcc gives an extraneous warning about this constant... */
#if defined(__STDC__) || defined(__GNUC__)
#define JAN_1970 2208988800UL /* 1970 - 1900 in seconds */
#else
#define JAN_1970 2208988800L /* 1970 - 1900 in seconds */
#define const /**/
#endif
#define MINHLIM 1 /* min hoplim in the packets send locally */
#define MAX_IP_PACKET_LEN 576
#define MIN_IP_HEADER_LEN 20
#define MAX_IP_HEADER_LEN 60
/*
* The IGMPv2 <netinet/in.h> defines INADDR_ALLRTRS_GROUP, but earlier
* ones don't, so we define it conditionally here.
*/
#ifndef INADDR_ALLRTRS_GROUP
/* address for multicast mtrace msg */
#define INADDR_ALLRTRS_GROUP (u_int32)0xe0000002 /* 224.0.0.2 */
#endif
#ifndef INADDR_MAX_LOCAL_GROUP
define INADDR_MAX_LOCAL_GROUP (u_int32)0xe00000ff /* 224.0.0.255 */
#endif
#define INADDR_ANY_N (u_int32)0x00000000 /* INADDR_ANY in
* network order */
#define CLASSD_PREFIX (u_int32)0xe0000000 /* 224.0.0.0 */
#define ALL_MCAST_GROUPS_ADDR (u_int32)0xe0000000 /* 224.0.0.0 */
#define ALL_MCAST_GROUPS_LENGTH 4
/* Used by DVMRP */
#define DEFAULT_METRIC 1 /* default subnet/tunnel metric */
#define DEFAULT_THRESHOLD 1 /* default subnet/tunnel threshold */
#define TIMER_INTERVAL 5 /* 5 sec virtual timer granularity */
#ifdef RSRR
#define BIT_ZERO(X) ((X) = 0)
#define BIT_SET(X,n) ((X) |= 1 << (n))
#define BIT_CLR(X,n) ((X) &= ~(1 << (n)))
#define BIT_TST(X,n) ((X) & 1 << (n))
#endif /* RSRR */
#ifdef SYSV
#define bcopy(a, b, c) memcpy((b), (a), (c))
#define bzero(s, n) memset((s), 0, (n))
#define setlinebuf(s) setvbuf((s), (NULL), (_IOLBF), 0)
#define RANDOM() lrand48()
#else
#define RANDOM() random()
#endif /* SYSV */
/*
* External declarations for global variables and functions.
*/
#define RECV_BUF_SIZE 64*1024 /* Maximum buff size to send
* or receive packet */
#define SO_RECV_BUF_SIZE_MAX 256*1024
#define SO_RECV_BUF_SIZE_MIN 48*1024
/* TODO: describe the variables and clean up */
extern char *mld6_recv_buf;
extern char *mld6_send_buf;
extern char *pim6_recv_buf;
extern char *pim6_send_buf;
extern int mld6_socket;
extern int pim6_socket;
extern struct sockaddr_in6 allnodes_group;
extern struct sockaddr_in6 allrouters_group;
extern struct sockaddr_in6 allpim6routers_group;
extern if_set nbr_mifs;
#ifdef RSRR
extern int rsrr_socket;
#endif /* RSRR */
extern u_long virtual_time;
extern char configfilename[];
extern u_int32 default_source_metric;
extern u_int32 default_source_preference;
extern srcentry_t *srclist;
extern grpentry_t *grplist;
extern struct uvif uvifs[];
extern vifi_t numvifs;
extern int total_interfaces;
extern int phys_vif;
extern int udp_socket;
extern int vifs_down;
extern char s1[];
extern char s2[];
extern char s3[];
extern char s4[];
#if !(defined(BSD) && (BSD >= 199103))
extern int errno;
extern int sys_nerr;
extern char * sys_errlist[];
#endif
#ifndef IGMP_MEMBERSHIP_QUERY
#define IGMP_MEMBERSHIP_QUERY IGMP_HOST_MEMBERSHIP_QUERY
#if !(defined(__NetBSD__))
#define IGMP_V1_MEMBERSHIP_REPORT IGMP_HOST_MEMBERSHIP_REPORT
#define IGMP_V2_MEMBERSHIP_REPORT IGMP_HOST_NEW_MEMBERSHIP_REPORT
#else
#define IGMP_V1_MEMBERSHIP_REPORT IGMP_v1_HOST_MEMBERSHIP_REPORT
#define IGMP_V2_MEMBERSHIP_REPORT IGMP_v2_HOST_MEMBERSHIP_REPORT
#endif
#define IGMP_V2_LEAVE_GROUP IGMP_HOST_LEAVE_MESSAGE
#endif
#if defined(__NetBSD__)
#define IGMP_MTRACE_RESP IGMP_MTRACE_REPLY
#define IGMP_MTRACE IGMP_MTRACE_QUERY
#endif
/* For timeout. The timers count down */
#define SET_TIMER(timer, value) (timer) = (value)
#define IF_TIMER_SET(timer) if ((timer) > 0)
#define IF_TIMER_NOT_SET(timer) if ((timer) <= 0)
#define FIRE_TIMER(timer) (timer) = 0
#define IF_TIMEOUT(value) \
if (!(((value) >= TIMER_INTERVAL) && ((value) -= TIMER_INTERVAL)))
#define IF_NOT_TIMEOUT(value) \
if (((value) >= TIMER_INTERVAL) && ((value) -= TIMER_INTERVAL))
#define TIMEOUT(value) \
(!(((value) >= TIMER_INTERVAL) && ((value) -= TIMER_INTERVAL)))
#define NOT_TIMEOUT(value) \
(((value) >= TIMER_INTERVAL) && ((value) -= TIMER_INTERVAL))
#define ELSE else /* To make emacs cc-mode happy */
/*
* External function definitions
*/
/* callout.c */
extern void callout_init __P((void));
extern void free_all_callouts __P((void));
extern void age_callout_queue __P((int));
extern int timer_nextTimer __P((void));
extern int timer_setTimer __P((int, cfunc_t, void *));
extern void timer_clearTimer __P((int));
extern int timer_leftTimer __P((int));
/* config.c */
extern void config_vifs_from_kernel __P((void));
extern void config_vifs_from_file __P((void));
/* debug.c */
extern char *packet_kind __P((u_int proto, u_int type, u_int code));
extern int debug_kind __P((u_int proto, u_int type, u_int code));
extern void log __P((int, int, char *, ...));
extern int log_level __P((u_int proto, u_int type, u_int code));
extern void dump __P((int i));
extern void fdump __P((int i));
extern void cdump __P((int i));
extern void dump_vifs __P((FILE *fp));
extern void dump_pim_mrt __P((FILE *fp));
extern void dump_lcl_grp __P((FILE *fp));
/* dvmrp_proto.c */
extern void dvmrp_accept_probe __P((u_int32 src, u_int32 dst,
char *p, int datalen,
u_int32 level));
extern void dvmrp_accept_report __P((u_int32 src, u_int32 dst,
char *p, int datalen,
u_int32 level));
extern void dvmrp_accept_info_request __P((u_int32 src, u_int32 dst,
u_char *p, int datalen));
extern void dvmrp_accept_info_reply __P((u_int32 src, u_int32 dst,
u_char *p, int datalen));
extern void dvmrp_accept_neighbors __P((u_int32 src, u_int32 dst,
u_char *p, int datalen,
u_int32 level));
extern void dvmrp_accept_neighbors2 __P((u_int32 src, u_int32 dst,
u_char *p, int datalen,
u_int32 level));
extern void dvmrp_accept_prune __P((u_int32 src, u_int32 dst,
char *p, int datalen));
extern void dvmrp_accept_graft __P((u_int32 src, u_int32 dst,
char *p, int datalen));
extern void dvmrp_accept_g_ack __P((u_int32 src, u_int32 dst,
char *p, int datalen));
/* mld6.c */
void init_mld6 __P((void));
void send_mld6 __P((int type, int code, struct sockaddr_in6 *src,
struct sockaddr_in6 *dst, struct in6_addr *group,
int index, int delay, int datalen, int alert));
/* mld6_proto.c */
extern void query_groups __P((struct uvif *v));
extern int check_grp_membership __P((struct uvif *v,
struct sockaddr_in6 *group));
extern void accept_listener_query __P((struct sockaddr_in6 *src,
struct in6_addr *dst,
struct in6_addr *group,
int tmo));
extern void accept_listener_report __P((struct sockaddr_in6 *src,
struct in6_addr *dst,
struct in6_addr *group));
extern void accept_listener_done __P((struct sockaddr_in6 *src,
struct in6_addr *dst,
struct in6_addr *group));
extern int check_multicast_listener __P((struct uvif *v,
struct sockaddr_in6 *group));
/* igmp.c */
#if 0
extern void init_igmp __P((void));
extern void send_igmp __P((char *buf, u_int32 src, u_int32 dst,
int type, int code, u_int32 group,
int datalen));
/* igmp_proto.c */
extern void query_groups __P((struct uvif *v));
extern void accept_membership_query __P((u_int32 src, u_int32 dst,
u_int32 group, int tmo));
extern void accept_group_report __P((u_int32 src, u_int32 dst,
u_int32 group, int r_type));
extern void accept_leave_message __P((u_int32 src, u_int32 dst,
u_int32 group));
#endif
#if 0
/* inet.c */
extern int inet_cksum __P((u_int16 *addr, u_int len));
extern int inet_valid_host __P((u_int32 naddr));
extern int inet_valid_mask __P((u_int32 mask));
extern int inet_valid_subnet __P((u_int32 nsubnet, u_int32 nmask));
extern char *inet_fmt __P((u_int32, char *s));
#ifdef NOSUCHDEF
extern char *inet_fmts __P((u_int32 addr, u_int32 mask, char *s));
#endif /* NOSUCHDEF */
extern char *netname __P((u_int32 addr, u_int32 mask));
extern u_int32 inet_parse __P((char *s, int n));
#endif
/* inet6.c */
extern int inet6_equal __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_lessoreq __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_lessthan __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_localif_address __P((struct sockaddr_in6 *sa,
struct uvif *v));
extern int inet6_greaterthan __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_greateroreq __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2));
extern int inet6_match_prefix __P((struct sockaddr_in6 *sa1,
struct sockaddr_in6 *sa2,
struct in6_addr *mask));
extern int inet6_mask2plen __P((struct in6_addr *mask));
extern int inet6_uvif2scopeid __P((struct sockaddr_in6 *sa, struct uvif *v));
extern int inet6_valid_host __P((struct sockaddr_in6 *addr));
extern char *inet6_fmt __P((struct in6_addr *addr));
extern char *ifindex2str __P((int ifindex));
extern char *net6name __P((struct in6_addr *prefix,
struct in6_addr *mask));
/* kern.c */
extern void k_set_rcvbuf __P((int socket, int bufsize, int minsize));
extern void k_hdr_include __P((int socket, int bool));
extern void k_set_hlim __P((int socket, int t));
extern void k_set_loop __P((int socket, int l));
extern void k_set_if __P((int socket, u_int ifindex));
extern void k_join __P((int socket, struct in6_addr *grp,
u_int ifindex));
extern void k_leave __P((int socket, struct in6_addr *grp,
u_int ifindex));
extern void k_init_pim __P((int));
extern void k_stop_pim __P((int));
extern int k_del_mfc __P((int socket, struct sockaddr_in6 *source,
struct sockaddr_in6 *group));
extern int k_chg_mfc __P((int socket, struct sockaddr_in6 *source,
struct sockaddr_in6 *group, vifi_t iif,
if_set *oifs));
extern void k_add_vif __P((int socket, vifi_t vifi, struct uvif *v));
extern void k_del_vif __P((int socket, vifi_t vifi));
extern int k_get_vif_count __P((vifi_t vifi, struct vif_count *retval));
extern int k_get_sg_cnt __P((int socket, struct sockaddr_in6 *source,
struct sockaddr_in6 *group,
struct sg_count *retval));
/* main.c */
extern int register_input_handler __P((int fd, ihfunc_t func));
/* mrt.c */
extern void init_pim6_mrt __P((void));
extern mrtentry_t *find_route __P((struct sockaddr_in6 *source,
struct sockaddr_in6 *group,
u_int16 flags, char create));
extern grpentry_t *find_group __P((struct sockaddr_in6 *group));
extern srcentry_t *find_source __P((struct sockaddr_in6 *source));
extern void delete_mrtentry __P((mrtentry_t *mrtentry_ptr));
extern void delete_srcentry __P((srcentry_t *srcentry_ptr));
extern void delete_grpentry __P((grpentry_t *grpentry_ptr));
extern struct mrtfilter *search_filter __P((struct in6_addr *));
extern struct mrtfilter *add_filter __P((int, struct in6_addr *,
struct in6_addr *, int));
/* pim6.c */
extern void init_pim6 __P((void));
extern void send_pim6 __P((char *buf, struct sockaddr_in6 *src,
struct sockaddr_in6 *dst,
int type, int datalen));
/* pim6_poto.c */
extern int receive_pim6_hello __P((struct sockaddr_in6 *src,
char *pim_message, int datalen));
extern int send_pim6_hello __P((struct uvif *v, u_int16 holdtime));
extern void delete_pim6_nbr __P((pim_nbr_entry_t *nbr_delete));
extern int receive_pim6_join_prune __P((struct sockaddr_in6 *src,
char *pim_message, int datalen));
extern int send_pim6_jp __P((mrtentry_t *mrtentry_ptr, int action,
mifi_t mifi,
struct sockaddr_in6 *target_addr,
u_int16 holdtime, int echo));
extern int receive_pim6_assert __P((struct sockaddr_in6 *src,
char *pim_message, int datalen));
extern int send_pim6_assert __P((struct sockaddr_in6 *source,
struct sockaddr_in6 *group,
mifi_t mifi,
mrtentry_t *mrtentry_ptr));
extern void delete_pim6_graft_entry __P((mrtentry_t *mrtentry_ptr));
extern int receive_pim6_graft __P((struct sockaddr_in6 *src,
char *pim_message, int datalen,
int pimtype));
extern int send_pim6_graft __P((mrtentry_t *mrtentry_ptr));
#if 0
/* pim.c */
extern void init_pim __P((void));
extern void send_pim __P((char *buf, u_int32 src, u_int32 dst,
int type, int datalen));
extern void send_pim_unicast __P((char *buf, u_int32 src, u_int32 dst,
int type, int datalen));
/* pim_proto.c */
extern int receive_pim_hello __P((u_int32 src, u_int32 dst,
char *pim_message, int datalen));
extern int send_pim_hello __P((struct uvif *v, u_int16 holdtime));
extern void delete_pim_nbr __P((pim_nbr_entry_t *nbr_delete));
extern int receive_pim_join_prune __P((u_int32 src, u_int32 dst,
char *pim_message, int datalen));
extern int send_pim_jp __P((mrtentry_t *mrtentry_ptr, int action,
vifi_t vifi, u_int32 target_addr,
u_int16 holdtime));
extern int receive_pim_assert __P((u_int32 src, u_int32 dst,
char *pim_message, int datalen));
extern int send_pim_assert __P((u_int32 source, u_int32 group,
vifi_t vifi,
mrtentry_t *mrtentry_ptr));
extern void delete_pim_graft_entry __P((mrtentry_t *mrtentry_ptr));
extern int receive_pim_graft __P((u_int32 src, u_int32 dst,
char *pim_message, int datalen,
int pimtype));
#endif
/* route.c */
extern int set_incoming __P((srcentry_t *srcentry_ptr,
int srctype));
extern vifi_t get_iif __P((struct sockaddr_in6 *source));
extern pim_nbr_entry_t *find_pim6_nbr __P((struct sockaddr_in6 *source));
extern int add_sg_oif __P((mrtentry_t *mrtentry_ptr,
vifi_t vifi,
u_int16 holdtime,
int update_holdtime));
extern void add_leaf __P((vifi_t vifi,
struct sockaddr_in6 *source,
struct sockaddr_in6 *group));
extern void delete_leaf __P((vifi_t vifi,
struct sockaddr_in6 *source,
struct sockaddr_in6 *group));
extern void set_leaves __P((mrtentry_t *mrtentry_ptr));
extern int change_interfaces __P((mrtentry_t *mrtentry_ptr,
vifi_t new_iif,
if_set *new_pruned_oifs,
if_set *new_leaves_,
if_set *new_asserted_oifs));
extern void calc_oifs __P((mrtentry_t *mrtentry_ptr,
if_set *oifs_ptr));
extern void process_kernel_call __P((void));
extern int delete_vif_from_mrt __P((vifi_t vifi));
extern void trigger_join_alert __P((mrtentry_t *mrtentry_ptr));
extern void trigger_prune_alert __P((mrtentry_t *mrtentry_ptr));
/* routesock.c */
extern int k_req_incoming __P((struct sockaddr_in6 *source,
struct rpfctl *rpfp));
#ifdef HAVE_ROUTING_SOCKETS
extern int init_routesock __P((void));
#endif /* HAVE_ROUTING_SOCKETS */
#ifdef RSRR
#define gtable mrtentry
#define RSRR_NOTIFICATION_OK TRUE
#define RSRR_NOTIFICATION_FALSE FALSE
/* rsrr.c */
extern void rsrr_init __P((void));
extern void rsrr_clean __P((void));
extern void rsrr_cache_send __P((struct gtable *, int));
extern void rsrr_cache_clean __P((struct gtable *));
extern void rsrr_cache_bring_up __P((struct gtable *));
#endif /* RSRR */
/* timer.c */
extern void init_timers __P((void));
extern void age_vifs __P((void));
extern void age_routes __P((void));
extern int clean_srclist __P((void));
/* trace.c */
/* u_int is promoted u_char */
extern void accept_mtrace __P((struct sockaddr_in6 *src,
struct in6_addr *dst, struct in6_addr *group,
int ifindex, char *data, u_int no, int datalen));
/* vif.c */
extern void init_vifs __P((void));
extern void stop_all_vifs __P((void));
extern void check_vif_state __P((void));
extern vifi_t local_address __P((struct sockaddr_in6 *src));
extern vifi_t find_vif_direct __P((struct sockaddr_in6 *src));
extern vifi_t find_vif_direct_local __P((struct sockaddr_in6 *src));
extern struct sockaddr_in6 *max_global_address __P((void));
extern struct sockaddr_in6 *uv_global __P((vifi_t vifi));
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