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IGMPv2 routines rewritten, to be more compact and to fully comply

Browse Source 
with the IGMPv2 Internet Draft (including Router Alert IP option)
This commit is contained in:
Bill Fenner 1996-03-14 16:59:20 +00:00
parent 95772c70ca
commit 49fa849bc8
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=14622
6 changed files with 174 additions and 297 deletions
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377
sys/netinet/igmp.c
View File

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* @(#)igmp.c 8.1 (Berkeley) 7/19/93
* $Id: igmp.c,v 1.14 1995/12/02 19:37:52 bde Exp $
* $Id: igmp.c,v 1.15 1995/12/09 20:43:51 phk Exp $
*/
/*
@ -44,8 +44,9 @@
* Written by Steve Deering, Stanford, May 1988.
* Modified by Rosen Sharma, Stanford, Aug 1994.
* Modified by Bill Fenner, Xerox PARC, Feb 1995.
* Modified to fully comply to IGMPv2 by Bill Fenner, Oct 1995.
*
* MULTICAST Revision: 3.3.1.2
* MULTICAST Revision: 3.5.1.4
*/
#include <sys/param.h>
@ -78,63 +79,40 @@ SYSCTL_STRUCT(_net_inet_igmp, IGMPCTL_STATS, stats, CTLFLAG_RD,
static int igmp_timers_are_running;
static u_long igmp_all_hosts_group;
static u_long igmp_local_group;
static u_long igmp_local_group_mask;
static u_long igmp_all_rtrs_group;
static struct mbuf *router_alert;
static struct router_info *Head;
static void igmp_sendpkt(struct in_multi *, int);
static void igmp_sendleave(struct in_multi *);
static void igmp_sendpkt(struct in_multi *, int, unsigned long);
void
igmp_init()
{
struct ipoption *ra;
/*
* To avoid byte-swapping the same value over and over again.
*/
igmp_all_hosts_group = htonl(INADDR_ALLHOSTS_GROUP);
igmp_local_group = htonl(0xe0000000); /* 224.0.0.0 */
igmp_local_group_mask = htonl(0xffffff00); /* ........^ */
igmp_all_rtrs_group = htonl(INADDR_ALLRTRS_GROUP);
igmp_timers_are_running = 0;
/*
* Construct a Router Alert option to use in outgoing packets
*/
MGET(router_alert, M_DONTWAIT, MT_DATA);
ra = mtod(router_alert, struct ipoption *);
ra->ipopt_dst.s_addr = 0;
ra->ipopt_list[0] = IPOPT_RA; /* Router Alert Option */
ra->ipopt_list[1] = 0x04; /* 4 bytes long */
ra->ipopt_list[2] = 0x00;
ra->ipopt_list[3] = 0x00;
router_alert->m_len = sizeof(ra->ipopt_dst) + ra->ipopt_list[1];
Head = (struct router_info *) 0;
}
static int
fill_rti(inm)
struct in_multi *inm;
{
register struct router_info *rti = Head;
#ifdef IGMP_DEBUG
printf("[igmp.c, _fill_rti] --> entering \n");
#endif
while (rti) {
if (rti->ifp == inm->inm_ifp) {
inm->inm_rti = rti;
#ifdef IGMP_DEBUG
printf("[igmp.c, _fill_rti] --> found old entry \n");
#endif
if (rti->type == IGMP_OLD_ROUTER)
return IGMP_HOST_MEMBERSHIP_REPORT;
else
return IGMP_HOST_NEW_MEMBERSHIP_REPORT;
}
rti = rti->next;
}
MALLOC(rti, struct router_info *, sizeof *rti, M_MRTABLE, M_NOWAIT);
rti->ifp = inm->inm_ifp;
rti->type = IGMP_NEW_ROUTER;
rti->time = IGMP_AGE_THRESHOLD;
rti->next = Head;
Head = rti;
inm->inm_rti = rti;
#ifdef IGMP_DEBUG
printf("[igmp.c, _fill_rti] --> created new entry \n");
#endif
return IGMP_HOST_NEW_MEMBERSHIP_REPORT;
}
static struct router_info *
find_rti(ifp)
struct ifnet *ifp;
@ -145,19 +123,19 @@ find_rti(ifp)
printf("[igmp.c, _find_rti] --> entering \n");
#endif
while (rti) {
if (rti->ifp == ifp) {
if (rti->rti_ifp == ifp) {
#ifdef IGMP_DEBUG
printf("[igmp.c, _find_rti] --> found old entry \n");
#endif
return rti;
}
rti = rti->next;
rti = rti->rti_next;
}
MALLOC(rti, struct router_info *, sizeof *rti, M_MRTABLE, M_NOWAIT);
rti->ifp = ifp;
rti->type = IGMP_NEW_ROUTER;
rti->time = IGMP_AGE_THRESHOLD;
rti->next = Head;
rti->rti_ifp = ifp;
rti->rti_type = IGMP_V2_ROUTER;
rti->rti_time = 0;
rti->rti_next = Head;
Head = rti;
#ifdef IGMP_DEBUG
printf("[igmp.c, _find_rti] --> created an entry \n");
@ -220,115 +198,102 @@ igmp_input(m, iphlen)
timer = igmp->igmp_code * PR_FASTHZ / IGMP_TIMER_SCALE;
rti = find_rti(ifp);
/*
* In the IGMPv2 specification, there are 3 states and a flag.
*
* In Non-Member state, we simply don't have a membership record.
* In Delaying Member state, our timer is running (inm->inm_timer)
* In Idle Member state, our timer is not running (inm->inm_timer==0)
*
* The flag is inm->inm_state, it is set to IGMP_OTHERMEMBER if
* we have heard a report from another member, or IGMP_IREPORTEDLAST
* if I sent the last report.
*/
switch (igmp->igmp_type) {
case IGMP_HOST_MEMBERSHIP_QUERY:
case IGMP_MEMBERSHIP_QUERY:
++igmpstat.igps_rcv_queries;
if (ifp->if_flags & IFF_LOOPBACK)
break;
if (igmp->igmp_code == 0) {
rti->type = IGMP_OLD_ROUTER; rti->time = 0;
/*
** Do exactly as RFC 1112 says
*/
* Old router. Remember that the querier on this
* interface is old, and set the timer to the
* value in RFC 1112.
*/
if (ip->ip_dst.s_addr != igmp_all_hosts_group) {
rti->rti_type = IGMP_V1_ROUTER;
rti->rti_time = 0;
timer = IGMP_MAX_HOST_REPORT_DELAY * PR_FASTHZ;
if (ip->ip_dst.s_addr != igmp_all_hosts_group ||
igmp->igmp_group.s_addr != 0) {
++igmpstat.igps_rcv_badqueries;
m_freem(m);
return;
}
} else {
/*
* Start the timers in all of our membership records for
* the interface on which the query arrived, except those
* that are already running and those that belong to a
* "local" group (224.0.0.X).
* New router. Simply do the new validity check.
*/
IN_FIRST_MULTI(step, inm);
while (inm != NULL) {
if (inm->inm_ifp == ifp
&& inm->inm_timer == 0
&& ((inm->inm_addr.s_addr
& igmp_local_group_mask)
!= igmp_local_group)) {
inm->inm_state = IGMP_DELAYING_MEMBER;
inm->inm_timer = IGMP_RANDOM_DELAY(
IGMP_MAX_HOST_REPORT_DELAY * PR_FASTHZ );
if (igmp->igmp_group.s_addr != 0 &&
!IN_MULTICAST(ntohl(igmp->igmp_group.s_addr))) {
++igmpstat.igps_rcv_badqueries;
m_freem(m);
return;
}
}
/*
* - Start the timers in all of our membership records
* that the query applies to for the interface on
* which the query arrived excl. those that belong
* to the "all-hosts" group (224.0.0.1).
* - Restart any timer that is already running but has
* a value longer than the requested timeout.
* - Use the value specified in the query message as
* the maximum timeout.
*/
IN_FIRST_MULTI(step, inm);
while (inm != NULL) {
if (inm->inm_ifp == ifp &&
inm->inm_addr.s_addr != igmp_all_hosts_group &&
(igmp->igmp_group.s_addr == 0 ||
igmp->igmp_group.s_addr == inm->inm_addr.s_addr)) {
if (inm->inm_timer == 0 ||
inm->inm_timer > timer) {
inm->inm_timer =
IGMP_RANDOM_DELAY(timer);
igmp_timers_are_running = 1;
}
IN_NEXT_MULTI(step, inm);
}
} else {
/*
** New Router
*/
if (!(m->m_flags & M_MCAST)) {
++igmpstat.igps_rcv_badqueries;
m_freem(m);
return;
}
/*
* - Start the timers in all of our membership records
* that the query applies to for the interface on
* which the query arrived excl. those that belong
* to a "local" group (224.0.0.X)
* - For timers already running check if they need to
* be reset.
* - Use the igmp->igmp_code field as the maximum
* delay possible
*/
IN_FIRST_MULTI(step, inm);
while (inm != NULL) {
if (inm->inm_ifp == ifp &&
(inm->inm_addr.s_addr & igmp_local_group_mask) !=
igmp_local_group &&
(ip->ip_dst.s_addr == igmp_all_hosts_group ||
ip->ip_dst.s_addr == inm->inm_addr.s_addr)) {
switch(inm->inm_state) {
case IGMP_IDLE_MEMBER:
case IGMP_LAZY_MEMBER:
case IGMP_AWAKENING_MEMBER:
inm->inm_timer = IGMP_RANDOM_DELAY(timer);
igmp_timers_are_running = 1;
inm->inm_state = IGMP_DELAYING_MEMBER;
break;
case IGMP_DELAYING_MEMBER:
if (inm->inm_timer > timer) {
inm->inm_timer = IGMP_RANDOM_DELAY(timer);
igmp_timers_are_running = 1;
inm->inm_state = IGMP_DELAYING_MEMBER;
}
break;
case IGMP_SLEEPING_MEMBER:
inm->inm_state = IGMP_AWAKENING_MEMBER;
break;
}
}
IN_NEXT_MULTI(step, inm);
}
}
break;
case IGMP_HOST_MEMBERSHIP_REPORT:
case IGMP_V1_MEMBERSHIP_REPORT:
case IGMP_V2_MEMBERSHIP_REPORT:
/*
* an old report
* For fast leave to work, we have to know that we are the
* last person to send a report for this group. Reports
* can potentially get looped back if we are a multicast
* router, so discard reports sourced by me.
*/
IFP_TO_IA(ifp, ia);
if (ia && ip->ip_src.s_addr == IA_SIN(ia)->sin_addr.s_addr)
break;
++igmpstat.igps_rcv_reports;
if (ifp->if_flags & IFF_LOOPBACK)
break;
if (!IN_MULTICAST(ntohl(igmp->igmp_group.s_addr)) ||
igmp->igmp_group.s_addr != ip->ip_dst.s_addr) {
if (!IN_MULTICAST(ntohl(igmp->igmp_group.s_addr))) {
++igmpstat.igps_rcv_badreports;
m_freem(m);
return;
@ -343,10 +308,8 @@ igmp_input(m, iphlen)
* to compensate for the lack of any way for a process to
* determine the arrival interface of an incoming packet.
*/
if ((ntohl(ip->ip_src.s_addr) & IN_CLASSA_NET) == 0) {
IFP_TO_IA(ifp, ia);
if ((ntohl(ip->ip_src.s_addr) & IN_CLASSA_NET) == 0)
if (ia) ip->ip_src.s_addr = htonl(ia->ia_subnet);
}
/*
* If we belong to the group being reported, stop
@ -355,92 +318,13 @@ igmp_input(m, iphlen)
IN_LOOKUP_MULTI(igmp->igmp_group, ifp, inm);
if (inm != NULL) {
inm->inm_timer = 0;
++igmpstat.igps_rcv_ourreports;
switch(inm->inm_state){
case IGMP_IDLE_MEMBER:
case IGMP_LAZY_MEMBER:
case IGMP_AWAKENING_MEMBER:
case IGMP_SLEEPING_MEMBER:
inm->inm_state = IGMP_SLEEPING_MEMBER;
break;
case IGMP_DELAYING_MEMBER:
if (inm->inm_rti->type == IGMP_OLD_ROUTER)
inm->inm_state = IGMP_LAZY_MEMBER;
else
inm->inm_state = IGMP_SLEEPING_MEMBER;
break;
}
inm->inm_timer = 0;
++igmpstat.igps_rcv_ourreports;
inm->inm_state = IGMP_OTHERMEMBER;
}
break;
case IGMP_HOST_NEW_MEMBERSHIP_REPORT:
/*
* a new report
*/
/*
* We can get confused and think there's someone
* else out there if we are a multicast router.
* For fast leave to work, we have to know that
* we are the only member.
*/
IFP_TO_IA(ifp, ia);
if (ia && ip->ip_src.s_addr == IA_SIN(ia)->sin_addr.s_addr)
break;
++igmpstat.igps_rcv_reports;
if (ifp->if_flags & IFF_LOOPBACK)
break;
if (!IN_MULTICAST(ntohl(igmp->igmp_group.s_addr)) ||
igmp->igmp_group.s_addr != ip->ip_dst.s_addr) {
++igmpstat.igps_rcv_badreports;
m_freem(m);
return;
}
/*
* KLUDGE: if the IP source address of the report has an
* unspecified (i.e., zero) subnet number, as is allowed for
* a booting host, replace it with the correct subnet number
* so that a process-level multicast routing demon can
* determine which subnet it arrived from. This is necessary
* to compensate for the lack of any way for a process to
* determine the arrival interface of an incoming packet.
*/
if ((ntohl(ip->ip_src.s_addr) & IN_CLASSA_NET) == 0) {
/* #ifndef MROUTING XXX - I don't think the ifdef is necessary */
IFP_TO_IA(ifp, ia);
/* #endif */
if (ia) ip->ip_src.s_addr = htonl(ia->ia_subnet);
}
/*
* If we belong to the group being reported, stop
* our timer for that group.
*/
IN_LOOKUP_MULTI(igmp->igmp_group, ifp, inm);
if (inm != NULL) {
inm->inm_timer = 0;
++igmpstat.igps_rcv_ourreports;
switch(inm->inm_state){
case IGMP_DELAYING_MEMBER:
case IGMP_IDLE_MEMBER:
inm->inm_state = IGMP_LAZY_MEMBER;
break;
case IGMP_AWAKENING_MEMBER:
inm->inm_state = IGMP_LAZY_MEMBER;
break;
case IGMP_LAZY_MEMBER:
case IGMP_SLEEPING_MEMBER:
break;
}
}
}
/*
@ -456,16 +340,16 @@ igmp_joingroup(inm)
{
int s = splnet();
inm->inm_state = IGMP_IDLE_MEMBER;
if ((inm->inm_addr.s_addr & igmp_local_group_mask) == igmp_local_group
|| inm->inm_ifp->if_flags & IFF_LOOPBACK)
if (inm->inm_addr.s_addr == igmp_all_hosts_group
|| inm->inm_ifp->if_flags & IFF_LOOPBACK) {
inm->inm_timer = 0;
else {
igmp_sendpkt(inm,fill_rti(inm));
inm->inm_state = IGMP_OTHERMEMBER;
} else {
inm->inm_rti = find_rti(inm->inm_ifp);
igmp_sendpkt(inm, inm->inm_rti->rti_type, 0);
inm->inm_timer = IGMP_RANDOM_DELAY(
IGMP_MAX_HOST_REPORT_DELAY*PR_FASTHZ);
inm->inm_state = IGMP_DELAYING_MEMBER;
inm->inm_state = IGMP_IREPORTEDLAST;
igmp_timers_are_running = 1;
}
splx(s);
@ -475,20 +359,11 @@ void
igmp_leavegroup(inm)
struct in_multi *inm;
{
switch(inm->inm_state) {
case IGMP_DELAYING_MEMBER:
case IGMP_IDLE_MEMBER:
if (((inm->inm_addr.s_addr & igmp_local_group_mask)
!= igmp_local_group)
&& !(inm->inm_ifp->if_flags & IFF_LOOPBACK))
if (inm->inm_rti->type != IGMP_OLD_ROUTER)
igmp_sendleave(inm);
break;
case IGMP_LAZY_MEMBER:
case IGMP_AWAKENING_MEMBER:
case IGMP_SLEEPING_MEMBER:
break;
}
if (inm->inm_state == IGMP_IREPORTEDLAST &&
inm->inm_addr.s_addr != igmp_all_hosts_group &&
!(inm->inm_ifp->if_flags & IFF_LOOPBACK) &&
inm->inm_rti->rti_type != IGMP_V1_ROUTER)
igmp_sendpkt(inm, IGMP_V2_LEAVE_GROUP, igmp_all_rtrs_group);
}
void
@ -513,13 +388,8 @@ igmp_fasttimo()
if (inm->inm_timer == 0) {
/* do nothing */
} else if (--inm->inm_timer == 0) {
if (inm->inm_state == IGMP_DELAYING_MEMBER) {
if (inm->inm_rti->type == IGMP_OLD_ROUTER)
igmp_sendpkt(inm, IGMP_HOST_MEMBERSHIP_REPORT);
else
igmp_sendpkt(inm, IGMP_HOST_NEW_MEMBERSHIP_REPORT);
inm->inm_state = IGMP_IDLE_MEMBER;
}
igmp_sendpkt(inm, inm->inm_rti->rti_type, 0);
inm->inm_state = IGMP_IREPORTEDLAST;
} else {
igmp_timers_are_running = 1;
}
@ -538,12 +408,13 @@ igmp_slowtimo()
printf("[igmp.c,_slowtimo] -- > entering \n");
#endif
while (rti) {
rti->time ++;
if (rti->time >= IGMP_AGE_THRESHOLD){
rti->type = IGMP_NEW_ROUTER;
rti->time = IGMP_AGE_THRESHOLD;
if (rti->rti_type == IGMP_V1_ROUTER) {
rti->rti_time++;
if (rti->rti_time >= IGMP_AGE_THRESHOLD) {
rti->rti_type = IGMP_V2_ROUTER;
}
rti = rti->next;
}
rti = rti->rti_next;
}
#ifdef IGMP_DEBUG
printf("[igmp.c,_slowtimo] -- > exiting \n");
@ -552,9 +423,10 @@ igmp_slowtimo()
}
static void
igmp_sendpkt(inm, type)
igmp_sendpkt(inm, type, addr)
struct in_multi *inm;
int type;
unsigned long addr;
{
struct mbuf *m;
struct igmp *igmp;
@ -591,7 +463,7 @@ igmp_sendpkt(inm, type)
ip->ip_off = 0;
ip->ip_p = IPPROTO_IGMP;
ip->ip_src.s_addr = INADDR_ANY;
ip->ip_dst = igmp->igmp_group;
ip->ip_dst.s_addr = addr ? addr : igmp->igmp_group.s_addr;
imo->imo_multicast_ifp = inm->inm_ifp;
imo->imo_multicast_ttl = 1;
@ -602,15 +474,8 @@ igmp_sendpkt(inm, type)
*/
imo->imo_multicast_loop = (ip_mrouter != NULL);
ip_output(m, (struct mbuf *)0, (struct route *)0, 0, imo);
ip_output(m, router_alert, (struct route *)0, 0, imo);
FREE(imo, M_IPMOPTS);
++igmpstat.igps_snd_reports;
}
static void
igmp_sendleave(inm)
struct in_multi *inm;
{
igmp_sendpkt(inm, IGMP_HOST_LEAVE_MESSAGE);
}

54
sys/netinet/igmp.h
View File

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* @(#)igmp.h 8.1 (Berkeley) 6/10/93
* $Id: igmp.h,v 1.4 1994/09/06 22:42:17 wollman Exp $
* $Id: igmp.h,v 1.6 1995/06/13 17:51:06 wollman Exp $
*/
#ifndef _NETINET_IGMP_H_
@ -46,7 +46,7 @@
*
* Written by Steve Deering, Stanford, May 1988.
*
* MULTICAST Revision: 3.3.1.2
* MULTICAST Revision: 3.5.1.2
*/
/*
@ -64,43 +64,33 @@ struct igmp {
/*
* Message types, including version number.
*/
#define IGMP_HOST_MEMBERSHIP_QUERY 0x11 /* Host membership query */
#define IGMP_HOST_MEMBERSHIP_REPORT 0x12 /* Old membership report */
#define IGMP_DVMRP 0x13 /* DVMRP routing message */
#define IGMP_PIM 0x14 /* PIM routing message */
#define IGMP_MEMBERSHIP_QUERY 0x11 /* membership query */
#define IGMP_V1_MEMBERSHIP_REPORT 0x12 /* Ver. 1 membership report */
#define IGMP_V2_MEMBERSHIP_REPORT 0x16 /* Ver. 2 membership report */
#define IGMP_V2_LEAVE_GROUP 0x17 /* Leave-group message */
#define IGMP_HOST_NEW_MEMBERSHIP_REPORT 0x16 /* New membership report */
#define IGMP_DVMRP 0x13 /* DVMRP routing message */
#define IGMP_PIM 0x14 /* PIM routing message */
#define IGMP_HOST_LEAVE_MESSAGE 0x17 /* Leave-group message */
#define IGMP_MTRACE_RESP 0x1e /* traceroute resp.(to sender)*/
#define IGMP_MTRACE 0x1f /* mcast traceroute messages */
#define IGMP_MTRACE_RESP 0x1e /* traceroute resp. (to sender) */
#define IGMP_MTRACE 0x1f /* mcast traceroute messages */
#define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
/* query (in seconds) according */
/* to RFC1112 */
#define IGMP_MAX_HOST_REPORT_DELAY 10 /* max delay for response to */
/* query (in seconds) */
#define IGMP_TIMER_SCALE 10 /* denotes that the igmp->timer filed */
/*specifies time in tenths of seconds */
#define IGMP_TIMER_SCALE 10 /* denotes that the igmp code field */
/* specifies time in 10th of seconds*/
/*
* States for the IGMPv2 state table
* The following four defininitions are for backwards compatibility.
* They should be removed as soon as all applications are updated to
* use the new constant names.
*/
#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
/*
* We must remember whether the querier is an old or a new router.
*/
#define IGMP_OLD_ROUTER 0
#define IGMP_NEW_ROUTER 1
/*
* Revert to new router if we haven't heard from an old router in
* this amount of time.
*/
#define IGMP_AGE_THRESHOLD 540
#define IGMP_HOST_MEMBERSHIP_QUERY IGMP_MEMBERSHIP_QUERY
#define IGMP_HOST_MEMBERSHIP_REPORT IGMP_V1_MEMBERSHIP_REPORT
#define IGMP_HOST_NEW_MEMBERSHIP_REPORT IGMP_V2_MEMBERSHIP_REPORT
#define IGMP_HOST_LEAVE_MESSAGE IGMP_V2_LEAVE_GROUP
#endif /* _NETINET_IGMP_H_ */

24
sys/netinet/igmp_var.h
View File

@ -35,7 +35,7 @@
* SUCH DAMAGE.
*
* @(#)igmp_var.h 8.1 (Berkeley) 7/19/93
* $Id: igmp_var.h,v 1.7 1995/11/14 20:33:54 phk Exp $
* $Id: igmp_var.h,v 1.8 1996/01/30 22:58:22 mpp Exp $
*/
#ifndef _NETINET_IGMP_VAR_H_
@ -47,7 +47,7 @@
*
* Written by Steve Deering, Stanford, May 1988.
*
* MULTICAST Revision: 3.3.1.1
* MULTICAST Revision: 3.5.1.3
*/
struct igmpstat {
@ -67,6 +67,26 @@ extern struct igmpstat igmpstat;
#define IGMP_RANDOM_DELAY(X) (random() % (X) + 1)
/*
* States for IGMPv2's leave processing
*/
#define IGMP_OTHERMEMBER 0
#define IGMP_IREPORTEDLAST 1
/*
* We must remember what version the subnet's querier is.
* We conveniently use the IGMP message type for the proper
* membership report to keep this state.
*/
#define IGMP_V1_ROUTER IGMP_V1_MEMBERSHIP_REPORT
#define IGMP_V2_ROUTER IGMP_V2_MEMBERSHIP_REPORT
/*
* Revert to new router if we haven't heard from an old router in
* this amount of time.
*/
#define IGMP_AGE_THRESHOLD 540
void igmp_init __P((void));
void igmp_input __P((struct mbuf *, int));
void igmp_joingroup __P((struct in_multi *));

3
sys/netinet/in.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)in.h 8.3 (Berkeley) 1/3/94
* $Id: in.h,v 1.14 1996/01/19 08:00:57 peter Exp $
* $Id: in.h,v 1.15 1996/02/22 21:32:17 peter Exp $
*/
#ifndef _NETINET_IN_H_
@ -159,6 +159,7 @@ struct in_addr {
#define INADDR_UNSPEC_GROUP (u_long)0xe0000000 /* 224.0.0.0 */
#define INADDR_ALLHOSTS_GROUP (u_long)0xe0000001 /* 224.0.0.1 */
#define INADDR_ALLRTRS_GROUP (u_long)0xe0000002 /* 224.0.0.2 */
#define INADDR_MAX_LOCAL_GROUP (u_long)0xe00000ff /* 224.0.0.255 */
#define IN_LOOPBACKNET 127 /* official! */

10
sys/netinet/in_var.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)in_var.h 8.2 (Berkeley) 1/9/95
* $Id: in_var.h,v 1.15 1996/01/09 08:26:07 davidg Exp $
* $Id: in_var.h,v 1.16 1996/02/05 20:35:59 wollman Exp $
*/
#ifndef _NETINET_IN_VAR_H_
@ -137,10 +137,10 @@ extern int rtq_toomany; /* XXX */
*/
struct router_info {
struct ifnet *ifp;
int type; /* type of router which is querier on this interface */
int time; /* # of slow timeouts since last old query */
struct router_info *next;
struct ifnet *rti_ifp;
int rti_type; /* type of router which is querier on this interface */
int rti_time; /* # of slow timeouts since last old query */
struct router_info *rti_next;
};
/*

3
sys/netinet/ip.h
View File

@ -31,7 +31,7 @@
* SUCH DAMAGE.
*
* @(#)ip.h 8.2 (Berkeley) 6/1/94
* $Id: ip.h,v 1.6 1995/09/21 18:01:11 wollman Exp $
* $Id: ip.h,v 1.7 1995/12/21 21:20:27 wollman Exp $
*/
#ifndef _NETINET_IP_H_
@ -119,6 +119,7 @@ struct ip {
#define IPOPT_LSRR 131 /* loose source route */
#define IPOPT_SATID 136 /* satnet id */
#define IPOPT_SSRR 137 /* strict source route */
#define IPOPT_RA 148 /* router alert */
/*
* Offsets to fields in options other than EOL and NOP.