diff options
Diffstat (limited to 'usr.sbin/mrouted/kern.c')
| -rw-r--r-- | usr.sbin/mrouted/kern.c | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/usr.sbin/mrouted/kern.c b/usr.sbin/mrouted/kern.c new file mode 100644 index 0000000..a44a15f --- /dev/null +++ b/usr.sbin/mrouted/kern.c @@ -0,0 +1,183 @@ +/* + * 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. + * + * + * $Id: kern.c,v 1.6 1994/08/24 23:53:37 thyagara Exp $ + */ + + +#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_rate_limit = v->uv_rate_limit; + 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"); +} + + +/* + * Adds a (source, mcastgrp) entry to the kernel + */ +void k_add_rg(kt) + struct ktable *kt; +{ + struct mfcctl mc; + + /* copy table values so that setsockopt can process it */ + COPY_TABLES(kt, mc); + + /* write to kernel space */ + if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_ADD_MFC, + (char *)&mc, sizeof(mc)) < 0) + log(LOG_WARNING, errno, "setsockopt DVMRP_ADD_MFC"); +} + + +/* + * Deletes a (source, mcastgrp) entry from the kernel + */ +void k_del_rg(kt) + struct ktable *kt; +{ + struct mfcctl mc; + + /* copy table values so that setsockopt can process it */ + COPY_TABLES(kt, mc); + + /* write to kernel space */ + if (setsockopt(igmp_socket, IPPROTO_IP, DVMRP_DEL_MFC, + (char *)&mc, sizeof(mc)) < 0) + log(LOG_WARNING, errno, "setsockopt DVMRP_DEL_MFC"); +} |
