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-rw-r--r--usr.sbin/pim6dd/route.c659
1 files changed, 659 insertions, 0 deletions
diff --git a/usr.sbin/pim6dd/route.c b/usr.sbin/pim6dd/route.c
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index 0000000..6684f2c
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+++ b/usr.sbin/pim6dd/route.c
@@ -0,0 +1,659 @@
+/*
+ * 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: route.c,v 1.3 1999/10/27 11:40:30 jinmei 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 "defs.h"
+
+
+static u_int16 max_prune_timeout __P((mrtentry_t *));
+static void process_cache_miss __P((struct mrt6msg *im));
+static void process_wrong_iif __P((struct mrt6msg *im));
+
+u_int32 default_source_preference = DEFAULT_LOCAL_PREF;
+u_int32 default_source_metric = DEFAULT_LOCAL_METRIC;
+
+
+/* Return the iif for given address */
+vifi_t
+get_iif(address)
+ struct sockaddr_in6 *address;
+{
+ struct rpfctl rpfc;
+
+ k_req_incoming(address, &rpfc);
+ if (IN6_IS_ADDR_UNSPECIFIED(&rpfc.rpfneighbor.sin6_addr))
+ return (NO_VIF);
+ return (rpfc.iif);
+}
+
+/* Return the PIM neighbor toward a source */
+/* If route not found or if a local source or if a directly connected source,
+ * but is not PIM router, or if the first hop router is not a PIM router,
+ * then return NULL.
+ */
+pim_nbr_entry_t *
+find_pim6_nbr(source)
+ struct sockaddr_in6 *source;
+{
+ struct rpfctl rpfc;
+ pim_nbr_entry_t *pim_nbr;
+ struct sockaddr_in6 *next_hop_router_addr;
+
+ if (local_address(source) != NO_VIF)
+ return (pim_nbr_entry_t *)NULL;
+ k_req_incoming(source, &rpfc);
+ if ((IN6_IS_ADDR_UNSPECIFIED(&rpfc.rpfneighbor.sin6_addr))
+ || (rpfc.iif == NO_VIF))
+ return (pim_nbr_entry_t *)NULL;
+ next_hop_router_addr = &rpfc.rpfneighbor;
+ for (pim_nbr = uvifs[rpfc.iif].uv_pim_neighbors;
+ pim_nbr != (pim_nbr_entry_t *)NULL;
+ pim_nbr = pim_nbr->next)
+ if (inet6_equal(&pim_nbr->address, next_hop_router_addr))
+ return(pim_nbr);
+ return (pim_nbr_entry_t *)NULL;
+}
+
+/* TODO: check again the exact setup if the source is local or directly
+ * connected!!!
+ */
+/* TODO: XXX: change the metric and preference for all (S,G) entries per
+ * source?
+ */
+/* PIMDM TODO - If possible, this would be the place to correct set the
+ * source's preference and metric to that obtained from the kernel
+ * and/or unicast routing protocol. For now, set it to the configured
+ * default for local pref/metric.
+ */
+/*
+ * Set the iif, upstream router, preference and metric for the route
+ * toward the source. Return TRUE is the route was found, othewise FALSE.
+ * If srctype==PIM_IIF_SOURCE and if the source is directly connected
+ * then the "upstream" is set to NULL.
+ * Note that srctype is a hold-over from the PIM-SM daemon and is unused.
+ */
+int
+set_incoming(srcentry_ptr, srctype)
+ srcentry_t *srcentry_ptr;
+ int srctype;
+{
+ struct rpfctl rpfc;
+ struct sockaddr_in6 *source = &srcentry_ptr->address;
+ struct sockaddr_in6 *neighbor_addr;
+ register struct uvif *v;
+ register pim_nbr_entry_t *n;
+
+ /* Preference will be 0 if directly connected */
+ srcentry_ptr->preference = 0;
+ srcentry_ptr->metric = 0;
+
+ if ((srcentry_ptr->incoming = local_address(source)) != NO_VIF) {
+ /* The source is a local address */
+ /* TODO: set the upstream to myself? */
+ srcentry_ptr->upstream = (pim_nbr_entry_t *)NULL;
+ return (TRUE);
+ }
+
+ if ((srcentry_ptr->incoming = find_vif_direct(source)) == NO_VIF) {
+ /* TODO: probably need to check the case if the iif is disabled */
+ /* Use the lastest resource: the kernel unicast routing table */
+ k_req_incoming(source, &rpfc);
+ if ((rpfc.iif == NO_VIF) ||
+ IN6_IS_ADDR_UNSPECIFIED(&rpfc.rpfneighbor.sin6_addr)) {
+ /* couldn't find a route */
+ IF_DEBUG(DEBUG_PIM_MRT | DEBUG_RPF)
+ log(LOG_DEBUG, 0, "NO ROUTE found for %s",
+ inet6_fmt(&source->sin6_addr));
+ return(FALSE);
+ }
+ srcentry_ptr->incoming = rpfc.iif;
+ neighbor_addr = &rpfc.rpfneighbor;
+ }
+ else {
+ /* The source is directly connected.
+ */
+ srcentry_ptr->upstream = (pim_nbr_entry_t *)NULL;
+ return (TRUE);
+ }
+
+ /* set the preference for sources that aren't directly connected. */
+ v = &uvifs[srcentry_ptr->incoming];
+ srcentry_ptr->preference = v->uv_local_pref;
+ srcentry_ptr->metric = v->uv_local_metric;
+
+ /*
+ * The upstream router must be a (PIM router) neighbor, otherwise we
+ * are in big trouble ;-)
+ */
+ for (n = v->uv_pim_neighbors; n != NULL; n = n->next) {
+ if (inet6_lessthan(neighbor_addr, &n->address))
+ continue;
+ if (inet6_equal(neighbor_addr, &n->address)) {
+ /*
+ *The upstream router is found in the list of neighbors.
+ * We are safe!
+ */
+ srcentry_ptr->upstream = n;
+ IF_DEBUG(DEBUG_RPF)
+ log(LOG_DEBUG, 0,
+ "For src %s, iif is %d, next hop router is %s",
+ inet6_fmt(&source->sin6_addr), srcentry_ptr->incoming,
+ inet6_fmt(&neighbor_addr->sin6_addr));
+ return(TRUE);
+ }
+ else break;
+ }
+
+ /* TODO: control the number of messages! */
+ log(LOG_INFO, 0,
+ "For src %s, iif is %d, next hop router is %s: NOT A PIM ROUTER",
+ inet6_fmt(&source->sin6_addr), srcentry_ptr->incoming,
+ inet6_fmt(&neighbor_addr->sin6_addr));
+ srcentry_ptr->upstream = (pim_nbr_entry_t *)NULL;
+
+ return(FALSE);
+}
+
+
+/* Set the leaves in a new mrtentry */
+void set_leaves(mrtentry_ptr)
+ mrtentry_t *mrtentry_ptr;
+{
+ vifi_t vifi;
+ struct uvif *v;
+
+ /* Check for a group report on each vif */
+ for (vifi = 0, v = uvifs; vifi < numvifs; ++vifi, ++v)
+ if(check_multicast_listener(v, &mrtentry_ptr->group->group))
+ IF_SET(vifi, &mrtentry_ptr->leaves);
+}
+
+
+/* Handle new receiver
+ *
+ * TODO: XXX: currently `source` is not used. Will be used with IGMPv3 where
+ * we have source-specific Join/Prune.
+ */
+void
+add_leaf(vifi, source, group)
+ vifi_t vifi;
+ struct sockaddr_in6 *source;
+ struct sockaddr_in6 *group;
+{
+ grpentry_t *grpentry_ptr;
+ mrtentry_t *mrtentry_srcs;
+ if_set new_leaves;
+ int state_change;
+
+ grpentry_ptr = find_group(group);
+ if (grpentry_ptr == (grpentry_t *)NULL)
+ return;
+
+ /* walk the source list for the group and add vif to oiflist */
+ for (mrtentry_srcs = grpentry_ptr->mrtlink;
+ mrtentry_srcs != (mrtentry_t *)NULL;
+ mrtentry_srcs = mrtentry_srcs->grpnext) {
+
+ /* if applicable, add the vif to the leaves */
+ if (mrtentry_srcs->incoming == vifi)
+ continue;
+
+ if(!(IF_ISSET(vifi, &mrtentry_srcs->leaves))) {
+
+ IF_DEBUG(DEBUG_MRT)
+ log(LOG_DEBUG, 0, "Adding leaf vif %d for src %s group %s",
+ vifi,
+ inet6_fmt(&mrtentry_srcs->source->address.sin6_addr),
+ inet6_fmt(&group->sin6_addr));
+
+ IF_COPY(&mrtentry_srcs->leaves, &new_leaves);
+ IF_SET(vifi, &new_leaves); /* Add the leaf */
+
+ state_change =
+ change_interfaces(mrtentry_srcs,
+ mrtentry_srcs->incoming,
+ &mrtentry_srcs->pruned_oifs,
+ &new_leaves,
+ &mrtentry_srcs->asserted_oifs);
+
+ /* Handle transition from negative cache */
+ if(state_change == 1)
+ trigger_join_alert(mrtentry_srcs);
+ }
+ }
+}
+
+
+/*
+ * TODO: XXX: currently `source` is not used. To be used with IGMPv3 where
+ * we have source-specific joins/prunes.
+ */
+void
+delete_leaf(vifi, source, group)
+ vifi_t vifi;
+ struct sockaddr_in6 *source;
+ struct sockaddr_in6 *group;
+{
+ grpentry_t *grpentry_ptr;
+ mrtentry_t *mrtentry_srcs;
+ if_set new_leaves;
+ int state_change;
+
+ /* mrtentry_t *mrtentry_ptr;
+ * mrtentry_t *mrtentry_srcs;
+ * vifbitmap_t new_oifs;
+ * vifbitmap_t old_oifs;
+ * vifbitmap_t new_leaves;
+ */
+
+ grpentry_ptr = find_group(group);
+ if (grpentry_ptr == (grpentry_t *)NULL)
+ return;
+
+ /* walk the source list for the group and delete vif to leaves */
+ for (mrtentry_srcs = grpentry_ptr->mrtlink;
+ mrtentry_srcs != (mrtentry_t *)NULL;
+ mrtentry_srcs = mrtentry_srcs->grpnext) {
+
+ /* if applicable, delete the vif from the leaves */
+ if (mrtentry_srcs->incoming == vifi)
+ continue;
+
+ if(IF_ISSET(vifi, &mrtentry_srcs->leaves)) {
+
+ IF_DEBUG(DEBUG_MRT)
+ log(LOG_DEBUG, 0, "Deleting leaf vif %d for src %s, group %s",
+ vifi,
+ inet6_fmt(&mrtentry_srcs->source->address.sin6_addr),
+ inet6_fmt(&group->sin6_addr));
+
+ IF_COPY(&mrtentry_srcs->leaves, &new_leaves);
+ IF_CLR(vifi, &new_leaves); /* Remove the leaf */
+
+ state_change =
+ change_interfaces(mrtentry_srcs,
+ mrtentry_srcs->incoming,
+ &mrtentry_srcs->pruned_oifs,
+ &new_leaves,
+ &mrtentry_srcs->asserted_oifs);
+
+ /* Handle transition to negative cache */
+ if(state_change == -1)
+ trigger_prune_alert(mrtentry_srcs);
+ }
+ }
+}
+
+void
+calc_oifs(mrtentry_ptr, oifs_ptr)
+ mrtentry_t *mrtentry_ptr;
+ if_set *oifs_ptr;
+{
+ if_set oifs;
+
+ /*
+ * oifs =
+ * ((nbr_ifs - my_prune) + my_leaves) - my_filters - incoming_interface,
+ * i.e.`leaves` have higher priority than `prunes`, but lower than `filters'.
+ * Asserted oifs (those that lost assert) are handled as pruned oifs.
+ * The incoming interface is always deleted from the oifs
+ */
+
+ if (mrtentry_ptr == (mrtentry_t *)NULL) {
+ IF_ZERO(oifs_ptr);
+ return;
+ }
+
+ IF_COPY(&nbr_mifs, &oifs);
+ IF_CLR_MASK(&oifs, &mrtentry_ptr->pruned_oifs);
+ IF_MERGE(&oifs, &mrtentry_ptr->leaves, &oifs);
+ IF_CLR_MASK(&oifs, &mrtentry_ptr->asserted_oifs);
+ IF_CLR_MASK(&oifs, &mrtentry_ptr->filter_oifs);
+ IF_CLR(mrtentry_ptr->incoming, &oifs);
+ IF_COPY(&oifs, oifs_ptr);
+}
+
+
+/*
+ * Set the iif, join/prune/leaves/asserted interfaces. Calculate and
+ * set the oifs.
+ * Return 1 if oifs change from NULL to not-NULL.
+ * Return -1 if oifs change from non-NULL to NULL
+ * else return 0
+ * If the iif change or if the oifs change from NULL to non-NULL
+ * or vice-versa, then schedule that mrtentry join/prune timer to
+ * timeout immediately.
+ */
+int
+change_interfaces(mrtentry_ptr, new_iif, new_pruned_oifs,
+ new_leaves_, new_asserted_oifs)
+ mrtentry_t *mrtentry_ptr;
+ vifi_t new_iif;
+ if_set *new_pruned_oifs;
+ if_set *new_leaves_;
+ if_set *new_asserted_oifs;
+{
+ if_set old_pruned_oifs; /* unnecessary? */
+ if_set old_leaves; /* unnecessary? */
+ if_set new_leaves;
+ if_set new_real_oifs; /* The result oifs */
+ if_set old_real_oifs;
+ if_set old_asserted_oifs; /* unnecessary? */
+ vifi_t old_iif;
+ int return_value;
+
+ if (mrtentry_ptr == (mrtentry_t *)NULL)
+ return (0);
+
+ IF_COPY(new_leaves_, &new_leaves);
+
+ old_iif = mrtentry_ptr->incoming;
+ IF_COPY(&mrtentry_ptr->leaves, &old_leaves);
+ IF_COPY(&mrtentry_ptr->pruned_oifs, &old_pruned_oifs);
+ IF_COPY(&mrtentry_ptr->asserted_oifs, &old_asserted_oifs);
+
+ IF_COPY(&mrtentry_ptr->oifs, &old_real_oifs);
+
+ mrtentry_ptr->incoming = new_iif;
+ IF_COPY(new_pruned_oifs, &mrtentry_ptr->pruned_oifs);
+ IF_COPY(&new_leaves, &mrtentry_ptr->leaves);
+ IF_COPY(new_asserted_oifs, &mrtentry_ptr->asserted_oifs);
+ calc_oifs(mrtentry_ptr, &new_real_oifs);
+
+ if (IF_ISEMPTY(&old_real_oifs)) {
+ if (IF_ISEMPTY(&new_real_oifs))
+ return_value = 0;
+ else
+ return_value = 1;
+ } else {
+ if (IF_ISEMPTY(&new_real_oifs))
+ return_value = -1;
+ else
+ return_value = 0;
+ }
+
+ if ((IF_SAME(&new_real_oifs, &old_real_oifs))
+ && (new_iif == old_iif))
+ return 0; /* Nothing to change */
+
+ IF_COPY(&new_real_oifs, &mrtentry_ptr->oifs);
+
+ k_chg_mfc(mld6_socket, &mrtentry_ptr->source->address,
+ &mrtentry_ptr->group->group, new_iif, &new_real_oifs);
+
+#ifdef RSRR
+ rsrr_cache_send(mrtentry_ptr, RSRR_NOTIFICATION_OK);
+#endif /* RSRR */
+
+ return (return_value);
+}
+
+
+/* TODO: implement it. Required to allow changing of the physical interfaces
+ * configuration without need to restart pimd.
+ */
+int
+delete_vif_from_mrt(vifi)
+vifi_t vifi;
+{
+ return TRUE;
+}
+
+
+static u_int16
+max_prune_timeout(mrtentry_ptr)
+ mrtentry_t *mrtentry_ptr;
+{
+ vifi_t vifi;
+#if 0
+ /* XXX: I don't understand how the variable works...(jinmei@kame.net) */
+ u_int16 time_left = 0;
+#endif
+ u_int16 max_holdtime = 0;
+
+ for(vifi=0; vifi < numvifs; ++vifi)
+ if(IF_ISSET(vifi, &mrtentry_ptr->pruned_oifs) &&
+ mrtentry_ptr->prune_timers[vifi])
+ /* XXX - too expensive ? */
+ if(mrtentry_ptr->prune_timers[vifi] > max_holdtime)
+ max_holdtime = mrtentry_ptr->prune_timers[vifi];
+#if 0
+ /* XXX: This is original. But does it have any meaning? */
+ max_holdtime = time_left;
+#endif
+
+ if(max_holdtime == 0)
+ max_holdtime = (u_int16)PIM_JOIN_PRUNE_HOLDTIME;
+
+ return(max_holdtime);
+}
+
+
+void
+process_kernel_call()
+{
+ register struct mrt6msg *im; /* igmpmsg control struct */
+
+ im = (struct mrt6msg *) mld6_recv_buf;
+
+ switch (im->im6_msgtype) {
+ case MRT6MSG_NOCACHE:
+ process_cache_miss(im);
+ break;
+ case MRT6MSG_WRONGMIF:
+ process_wrong_iif(im);
+ break;
+ default:
+ IF_DEBUG(DEBUG_KERN)
+ log(LOG_DEBUG, 0, "Unknown kernel_call code, %d", im->im6_msgtype);
+ break;
+ }
+}
+
+
+/*
+ * Protocol actions:
+ * 1. Create (S,G) entry (find_route(CREATE))
+ * a. set iif and oifs
+ */
+static void
+process_cache_miss(im)
+ struct mrt6msg *im;
+{
+ static struct sockaddr_in6 source = {sizeof(source), AF_INET6};
+ static struct sockaddr_in6 group = {sizeof(group), AF_INET6};
+ mrtentry_t *mrtentry_ptr;
+
+ /*
+ * When there is a cache miss, we check only the header of the packet
+ * (and only it should be sent up by the kernel.
+ */
+
+ group.sin6_addr = im->im6_dst;
+ source.sin6_addr = im->im6_src;
+ group.sin6_scope_id = inet6_uvif2scopeid(&group, &uvifs[im->im6_mif]);
+ source.sin6_scope_id = inet6_uvif2scopeid(&source, &uvifs[im->im6_mif]);
+
+ IF_DEBUG(DEBUG_MFC)
+ log(LOG_DEBUG, 0, "Cache miss, src %s, dst %s",
+ inet6_fmt(&source.sin6_addr), inet6_fmt(&group.sin6_addr));
+
+ /* Don't create routing entries for the LAN scoped addresses */
+ if (IN6_IS_ADDR_MC_NODELOCAL(&group.sin6_addr) ||/* sanity? */
+ IN6_IS_ADDR_MC_LINKLOCAL(&group.sin6_addr))
+ return;
+
+ /* Create the (S,G) entry */
+ mrtentry_ptr = find_route(&source, &group, MRTF_SG, CREATE);
+ if (mrtentry_ptr == (mrtentry_t *)NULL)
+ return;
+ mrtentry_ptr->flags &= ~MRTF_NEW;
+
+ /* Set oifs */
+ set_leaves(mrtentry_ptr);
+ calc_oifs(mrtentry_ptr, &(mrtentry_ptr->oifs));
+
+ /* Add it to the kernel */
+ k_chg_mfc(mld6_socket, &source, &group, mrtentry_ptr->incoming,
+ &mrtentry_ptr->oifs);
+
+#ifdef RSRR
+ rsrr_cache_send(mrtentry_ptr, RSRR_NOTIFICATION_OK);
+#endif /* RSRR */
+
+ /* No need to call change_interfaces, but check for NULL oiflist */
+ if(IF_ISEMPTY(&mrtentry_ptr->oifs))
+ trigger_prune_alert(mrtentry_ptr);
+}
+
+
+/*
+ * A multicast packet has been received on wrong iif by the kernel.
+ * If the packet was received on a point-to-point interface, rate-limit
+ * prunes. if the packet was received on a LAN interface, rate-limit
+ * asserts.
+ */
+static void
+process_wrong_iif(im)
+ struct mrt6msg *im;
+{
+ static struct sockaddr_in6 source = {sizeof(source), AF_INET6};
+ static struct sockaddr_in6 group = {sizeof(group), AF_INET6};
+ mifi_t mifi;
+ mrtentry_t *mrtentry_ptr;
+
+ group.sin6_addr = im->im6_dst;
+ source.sin6_addr = im->im6_src;
+ mifi = (mifi_t)im->im6_mif;
+ group.sin6_scope_id = inet6_uvif2scopeid(&group, &uvifs[mifi]);
+ source.sin6_scope_id = inet6_uvif2scopeid(&source, &uvifs[mifi]);
+
+ /* PIMDM TODO Don't create routing entries for the LAN scoped addresses */
+ if (IN6_IS_ADDR_MC_NODELOCAL(&group.sin6_addr) ||/* sanity? */
+ IN6_IS_ADDR_MC_LINKLOCAL(&group.sin6_addr))
+ return;
+
+ mrtentry_ptr = find_route(&source, &group, MRTF_SG, DONT_CREATE);
+ if(mrtentry_ptr == (mrtentry_t *)NULL)
+ return;
+
+ /* Ratelimit prunes or asserts */
+#ifdef notyet
+ if(uvifs[mifi].uv_flags & VIFF_POINT_TO_POINT) {
+
+ /* Wrong vif on P2P interface - rate-limit prunes */
+
+ if(mrtentry_ptr->last_prune[mifi] == virtual_time)
+ /* Skip due to rate-limiting */
+ return;
+ mrtentry_ptr->last_prune[mifi] = virtual_time;
+
+ if(uvifs[mifi].uv_rmt_addr)
+ send_pim6_jp(mrtentry_ptr, PIM_ACTION_PRUNE, mifi,
+ uvifs[mifi].uv_rmt_addr,
+ max_prune_timeout(mrtentry_ptr), 0);
+ else
+ log(LOG_WARNING, 0,
+ "Can't send wrongvif prune on p2p %s: no remote address",
+ uvifs[mifi].uv_lcl_addr);
+ } else
+#endif
+ {
+
+ /* Wrong vif on LAN interface - rate-limit asserts */
+
+ if(mrtentry_ptr->last_assert[mifi] == virtual_time)
+ /* Skip due to rate-limiting */
+ return;
+ mrtentry_ptr->last_assert[mifi] = virtual_time;
+
+ /* Send the assert */
+ send_pim6_assert(&source, &group, mifi, mrtentry_ptr);
+ }
+}
+
+
+void
+trigger_prune_alert(mrtentry_ptr)
+ mrtentry_t *mrtentry_ptr;
+{
+ IF_DEBUG(DEBUG_MRT)
+ log(LOG_DEBUG, 0, "Now negative cache for src %s, grp %s - pruning",
+ inet6_fmt(&mrtentry_ptr->source->address.sin6_addr),
+ inet6_fmt(&mrtentry_ptr->group->group.sin6_addr));
+
+ /* Set the entry timer to the max of the prune timers */
+ SET_TIMER(mrtentry_ptr->timer, max_prune_timeout(mrtentry_ptr));
+
+ /* Send a prune */
+ if(mrtentry_ptr->upstream)
+ send_pim6_jp(mrtentry_ptr, PIM_ACTION_PRUNE, mrtentry_ptr->incoming,
+ &mrtentry_ptr->upstream->address,
+ max_prune_timeout(mrtentry_ptr), 0);
+}
+
+void
+trigger_join_alert(mrtentry_ptr)
+ mrtentry_t *mrtentry_ptr;
+{
+ IF_DEBUG(DEBUG_MRT)
+ log(LOG_DEBUG, 0, "Now forwarding state for src %s, grp %s - grafting",
+ inet6_fmt(&mrtentry_ptr->source->address.sin6_addr),
+ inet6_fmt(&mrtentry_ptr->group->group.sin6_addr));
+
+ /* Refresh the entry timer */
+ SET_TIMER(mrtentry_ptr->timer, PIM_DATA_TIMEOUT);
+
+ /* Send graft */
+ send_pim6_graft(mrtentry_ptr);
+}
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