NetBSD/usr.sbin/mrouted/kern.c

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/*
* The mrouted program is covered by the license in the accompanying file
* named "LICENSE". Use of the mrouted program represents acceptance of
* the terms and conditions listed in that file.
*
* The mrouted program is COPYRIGHT 1989 by The Board of Trustees of
* Leland Stanford Junior University.
*
*
* from: Id: kern.c,v 1.3 1993/05/30 01:36:38 deering Exp
* $Id: kern.c,v 1.1 1994/01/11 20:15:56 brezak Exp $
*/
#ifndef lint
static char rcsid[] = "$Id: kern.c,v 1.1 1994/01/11 20:15:56 brezak Exp $";
#endif
#include "defs.h"
void k_set_rcvbuf(bufsize)
int bufsize;
{
if (setsockopt(igmp_socket, SOL_SOCKET, SO_RCVBUF,
(char *)&bufsize, sizeof(bufsize)) < 0)
log(LOG_ERR, errno, "setsockopt SO_RCVBUF %u", bufsize);
}
void k_hdr_include(bool)
int bool;
{
#ifdef IP_HDRINCL
if (setsockopt(igmp_socket, IPPROTO_IP, IP_HDRINCL,
(char *)&bool, sizeof(bool)) < 0)
log(LOG_ERR, errno, "setsockopt IP_HDRINCL %u", bool);
#endif
}
void k_set_ttl(t)
int t;
{
u_char ttl;
ttl = t;
if (setsockopt(igmp_socket, IPPROTO_IP, IP_MULTICAST_TTL,
(char *)&ttl, sizeof(ttl)) < 0)
log(LOG_ERR, errno, "setsockopt IP_MULTICAST_TTL %u", ttl);
}
void k_set_loop(l)
int l;
{
u_char loop;
loop = l;
if (setsockopt(igmp_socket, IPPROTO_IP, IP_MULTICAST_LOOP,
(char *)&loop, sizeof(loop)) < 0)
log(LOG_ERR, errno, "setsockopt IP_MULTICAST_LOOP %u", loop);
}
void k_set_if(ifa)
u_long ifa;
{
struct in_addr adr;
adr.s_addr = ifa;
if (setsockopt(igmp_socket, IPPROTO_IP, IP_MULTICAST_IF,
(char *)&adr, sizeof(adr)) < 0)
log(LOG_ERR, errno, "setsockopt IP_MULTICAST_IF %s",
inet_fmt(ifa, s1));
}
void k_join(grp, ifa)
u_long grp;
u_long ifa;
{
struct ip_mreq mreq;
mreq.imr_multiaddr.s_addr = grp;
mreq.imr_interface.s_addr = ifa;
if (setsockopt(igmp_socket, IPPROTO_IP, IP_ADD_MEMBERSHIP,
(char *)&mreq, sizeof(mreq)) < 0)
log(LOG_WARNING, errno, "can't join group %s on interface %s",
inet_fmt(grp, s1), inet_fmt(ifa, s2));
}
void k_leave(grp, ifa)
u_long grp;
u_long ifa;
{
struct ip_mreq mreq;
mreq.imr_multiaddr.s_addr = grp;
mreq.imr_interface.s_addr = ifa;
if (setsockopt(igmp_socket, IPPROTO_IP, IP_DROP_MEMBERSHIP,
(char *)&mreq, sizeof(mreq)) < 0)
log(LOG_WARNING, errno, "can't leave group %s on interface %s",
inet_fmt(grp, s1), inet_fmt(ifa, s2));
}
void k_init_dvmrp()
{
if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_INIT,
(char *)NULL, 0) < 0)
log(LOG_ERR, errno, "can't enable DVMRP routing in kernel");
}
void k_stop_dvmrp()
{
if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_DONE,
(char *)NULL, 0) < 0)
log(LOG_WARNING, errno, "can't disable DVMRP routing in kernel");
}
void k_add_vif(vifi, v)
vifi_t vifi;
struct uvif *v;
{
struct vifctl vc;
vc.vifc_vifi = vifi;
vc.vifc_flags = v->uv_flags & VIFF_KERNEL_FLAGS;
vc.vifc_threshold = v->uv_threshold;
vc.vifc_lcl_addr.s_addr = v->uv_lcl_addr;
vc.vifc_rmt_addr.s_addr = v->uv_rmt_addr;
if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_ADD_VIF,
(char *)&vc, sizeof(vc)) < 0)
log(LOG_ERR, errno, "setsockopt DVMRP_ADD_VIF");
}
void k_del_vif(vifi)
vifi_t vifi;
{
if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_DEL_VIF,
(char *)&vifi, sizeof(vifi)) < 0)
log(LOG_ERR, errno, "setsockopt DVMRP_DEL_VIF");
}
void k_add_group(vifi, group)
vifi_t vifi;
u_long group;
{
struct lgrplctl lc;
lc.lgc_vifi = vifi;
lc.lgc_gaddr.s_addr = group;
if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_ADD_LGRP,
(char *)&lc, sizeof(lc)) < 0)
log(LOG_WARNING, errno, "setsockopt DVMRP_ADD_LGRP");
}
void k_del_group(vifi, group)
vifi_t vifi;
u_long group;
{
struct lgrplctl lc;
lc.lgc_vifi = vifi;
lc.lgc_gaddr.s_addr = group;
if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_DEL_LGRP,
(char *)&lc, sizeof(lc)) < 0)
log(LOG_WARNING, errno, "setsockopt DVMRP_DEL_LGRP");
}
void k_add_route(r)
struct rtentry *r;
{
struct mrtctl mc;
mc.mrtc_origin.s_addr = r->rt_origin;
mc.mrtc_originmask.s_addr = r->rt_originmask;
mc.mrtc_parent = r->rt_parent;
VIFM_COPY(r->rt_children, mc.mrtc_children);
VIFM_COPY(r->rt_leaves, mc.mrtc_leaves);
if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_ADD_MRT,
(char *)&mc, sizeof(mc)) < 0)
log(LOG_WARNING, errno, "setsockopt DVMRP_ADD_MRT");
}
void k_update_route(r)
struct rtentry *r;
{
k_add_route(r);
}
void k_del_route(r)
struct rtentry *r;
{
struct in_addr orig;
orig.s_addr = r->rt_origin;
if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_DEL_MRT,
(char *)&orig, sizeof(orig)) < 0)
log(LOG_WARNING, errno, "setsockopt DVMRP_DEL_MRT");
}