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-rw-r--r--pimd/pim_rpf.c620
1 files changed, 305 insertions, 315 deletions
diff --git a/pimd/pim_rpf.c b/pimd/pim_rpf.c
index c5adf423c4..4d0652c27e 100644
--- a/pimd/pim_rpf.c
+++ b/pimd/pim_rpf.c
@@ -38,285 +38,281 @@
static long long last_route_change_time = -1;
long long nexthop_lookups_avoided = 0;
-static struct in_addr pim_rpf_find_rpf_addr (struct pim_upstream *up);
+static struct in_addr pim_rpf_find_rpf_addr(struct pim_upstream *up);
-void
-pim_rpf_set_refresh_time (void)
+void pim_rpf_set_refresh_time(void)
{
- last_route_change_time = pim_time_monotonic_usec();
- if (PIM_DEBUG_TRACE)
- zlog_debug ("%s: New last route change time: %lld",
- __PRETTY_FUNCTION__, last_route_change_time);
+ last_route_change_time = pim_time_monotonic_usec();
+ if (PIM_DEBUG_TRACE)
+ zlog_debug("%s: New last route change time: %lld",
+ __PRETTY_FUNCTION__, last_route_change_time);
}
-int pim_nexthop_lookup(struct pim_nexthop *nexthop, struct in_addr addr, int neighbor_needed)
+int pim_nexthop_lookup(struct pim_nexthop *nexthop, struct in_addr addr,
+ int neighbor_needed)
{
- struct pim_zlookup_nexthop nexthop_tab[MULTIPATH_NUM];
- struct pim_neighbor *nbr = NULL;
- int num_ifindex;
- struct interface *ifp = NULL;
- ifindex_t first_ifindex = 0;
- int found = 0;
- int i = 0;
-
- if ((nexthop->last_lookup.s_addr == addr.s_addr) &&
- (nexthop->last_lookup_time > last_route_change_time))
- {
- if (PIM_DEBUG_TRACE)
- {
- char addr_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
- char nexthop_str[PREFIX_STRLEN];
- pim_addr_dump("<nexthop?>", &nexthop->mrib_nexthop_addr,
- nexthop_str, sizeof(nexthop_str));
- zlog_debug ("%s: Using last lookup for %s at %lld, %lld addr%s",
- __PRETTY_FUNCTION__,
- addr_str,
- nexthop->last_lookup_time,
- last_route_change_time, nexthop_str);
+ struct pim_zlookup_nexthop nexthop_tab[MULTIPATH_NUM];
+ struct pim_neighbor *nbr = NULL;
+ int num_ifindex;
+ struct interface *ifp = NULL;
+ ifindex_t first_ifindex = 0;
+ int found = 0;
+ int i = 0;
+
+ if ((nexthop->last_lookup.s_addr == addr.s_addr)
+ && (nexthop->last_lookup_time > last_route_change_time)) {
+ if (PIM_DEBUG_TRACE) {
+ char addr_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<addr?>", addr, addr_str,
+ sizeof(addr_str));
+ char nexthop_str[PREFIX_STRLEN];
+ pim_addr_dump("<nexthop?>", &nexthop->mrib_nexthop_addr,
+ nexthop_str, sizeof(nexthop_str));
+ zlog_debug(
+ "%s: Using last lookup for %s at %lld, %lld addr%s",
+ __PRETTY_FUNCTION__, addr_str,
+ nexthop->last_lookup_time,
+ last_route_change_time, nexthop_str);
+ }
+ nexthop_lookups_avoided++;
+ return 0;
+ } else {
+ if (PIM_DEBUG_TRACE) {
+ char addr_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<addr?>", addr, addr_str,
+ sizeof(addr_str));
+ zlog_debug(
+ "%s: Looking up: %s, last lookup time: %lld, %lld",
+ __PRETTY_FUNCTION__, addr_str,
+ nexthop->last_lookup_time,
+ last_route_change_time);
+ }
}
- nexthop_lookups_avoided++;
- return 0;
- }
- else
- {
- if (PIM_DEBUG_TRACE)
- {
- char addr_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
- zlog_debug ("%s: Looking up: %s, last lookup time: %lld, %lld",
- __PRETTY_FUNCTION__,
- addr_str,
- nexthop->last_lookup_time,
- last_route_change_time);
+
+ memset(nexthop_tab, 0,
+ sizeof(struct pim_zlookup_nexthop) * MULTIPATH_NUM);
+ num_ifindex = zclient_lookup_nexthop(nexthop_tab, MULTIPATH_NUM, addr,
+ PIM_NEXTHOP_LOOKUP_MAX);
+ if (num_ifindex < 1) {
+ char addr_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
+ zlog_warn(
+ "%s %s: could not find nexthop ifindex for address %s",
+ __FILE__, __PRETTY_FUNCTION__, addr_str);
+ return -1;
+ }
+
+ while (!found && (i < num_ifindex)) {
+ first_ifindex = nexthop_tab[i].ifindex;
+
+ ifp = if_lookup_by_index(first_ifindex, VRF_DEFAULT);
+ if (!ifp) {
+ if (PIM_DEBUG_ZEBRA) {
+ char addr_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<addr?>", addr, addr_str,
+ sizeof(addr_str));
+ zlog_debug(
+ "%s %s: could not find interface for ifindex %d (address %s)",
+ __FILE__, __PRETTY_FUNCTION__,
+ first_ifindex, addr_str);
+ }
+ i++;
+ continue;
+ }
+
+ if (!ifp->info) {
+ if (PIM_DEBUG_ZEBRA) {
+ char addr_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<addr?>", addr, addr_str,
+ sizeof(addr_str));
+ zlog_debug(
+ "%s: multicast not enabled on input interface %s (ifindex=%d, RPF for source %s)",
+ __PRETTY_FUNCTION__, ifp->name,
+ first_ifindex, addr_str);
+ }
+ i++;
+ } else if (neighbor_needed
+ && !pim_if_connected_to_source(ifp, addr)) {
+ nbr = pim_neighbor_find(
+ ifp, nexthop_tab[i].nexthop_addr.u.prefix4);
+ if (PIM_DEBUG_PIM_TRACE_DETAIL)
+ zlog_debug("ifp name: %s, pim nbr: %p",
+ ifp->name, nbr);
+ if (!nbr && !if_is_loopback(ifp))
+ i++;
+ else
+ found = 1;
+ } else
+ found = 1;
}
- }
-
- memset (nexthop_tab, 0, sizeof (struct pim_zlookup_nexthop) * MULTIPATH_NUM);
- num_ifindex = zclient_lookup_nexthop(nexthop_tab,
- MULTIPATH_NUM,
- addr, PIM_NEXTHOP_LOOKUP_MAX);
- if (num_ifindex < 1) {
- char addr_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
- zlog_warn("%s %s: could not find nexthop ifindex for address %s",
- __FILE__, __PRETTY_FUNCTION__,
- addr_str);
- return -1;
- }
-
- while (!found && (i < num_ifindex))
- {
- first_ifindex = nexthop_tab[i].ifindex;
-
- ifp = if_lookup_by_index(first_ifindex, VRF_DEFAULT);
- if (!ifp)
- {
- if (PIM_DEBUG_ZEBRA)
- {
- char addr_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
- zlog_debug("%s %s: could not find interface for ifindex %d (address %s)",
- __FILE__, __PRETTY_FUNCTION__,
- first_ifindex, addr_str);
- }
- i++;
- continue;
- }
-
- if (!ifp->info)
- {
- if (PIM_DEBUG_ZEBRA)
- {
- char addr_str[INET_ADDRSTRLEN];
- pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
- zlog_debug("%s: multicast not enabled on input interface %s (ifindex=%d, RPF for source %s)",
- __PRETTY_FUNCTION__,
- ifp->name, first_ifindex, addr_str);
- }
- i++;
- }
- else if (neighbor_needed && !pim_if_connected_to_source (ifp, addr))
- {
- nbr = pim_neighbor_find (ifp, nexthop_tab[i].nexthop_addr.u.prefix4);
- if (PIM_DEBUG_PIM_TRACE_DETAIL)
- zlog_debug ("ifp name: %s, pim nbr: %p", ifp->name, nbr);
- if (!nbr && !if_is_loopback (ifp))
- i++;
- else
- found = 1;
- }
- else
- found = 1;
- }
-
- if (found)
- {
- if (PIM_DEBUG_ZEBRA) {
- char nexthop_str[PREFIX_STRLEN];
- char addr_str[INET_ADDRSTRLEN];
- pim_addr_dump("<nexthop?>", &nexthop_tab[i].nexthop_addr, nexthop_str, sizeof(nexthop_str));
- pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
- zlog_debug("%s %s: found nexthop %s for address %s: interface %s ifindex=%d metric=%d pref=%d",
- __FILE__, __PRETTY_FUNCTION__,
- nexthop_str, addr_str,
- ifp->name, first_ifindex,
- nexthop_tab[i].route_metric,
- nexthop_tab[i].protocol_distance);
- }
- /* update nextop data */
- nexthop->interface = ifp;
- nexthop->mrib_nexthop_addr = nexthop_tab[i].nexthop_addr;
- nexthop->mrib_metric_preference = nexthop_tab[i].protocol_distance;
- nexthop->mrib_route_metric = nexthop_tab[i].route_metric;
- nexthop->last_lookup = addr;
- nexthop->last_lookup_time = pim_time_monotonic_usec();
- nexthop->nbr = nbr;
- return 0;
- }
- else
- return -1;
+
+ if (found) {
+ if (PIM_DEBUG_ZEBRA) {
+ char nexthop_str[PREFIX_STRLEN];
+ char addr_str[INET_ADDRSTRLEN];
+ pim_addr_dump("<nexthop?>",
+ &nexthop_tab[i].nexthop_addr, nexthop_str,
+ sizeof(nexthop_str));
+ pim_inet4_dump("<addr?>", addr, addr_str,
+ sizeof(addr_str));
+ zlog_debug(
+ "%s %s: found nexthop %s for address %s: interface %s ifindex=%d metric=%d pref=%d",
+ __FILE__, __PRETTY_FUNCTION__, nexthop_str,
+ addr_str, ifp->name, first_ifindex,
+ nexthop_tab[i].route_metric,
+ nexthop_tab[i].protocol_distance);
+ }
+ /* update nextop data */
+ nexthop->interface = ifp;
+ nexthop->mrib_nexthop_addr = nexthop_tab[i].nexthop_addr;
+ nexthop->mrib_metric_preference =
+ nexthop_tab[i].protocol_distance;
+ nexthop->mrib_route_metric = nexthop_tab[i].route_metric;
+ nexthop->last_lookup = addr;
+ nexthop->last_lookup_time = pim_time_monotonic_usec();
+ nexthop->nbr = nbr;
+ return 0;
+ } else
+ return -1;
}
static int nexthop_mismatch(const struct pim_nexthop *nh1,
const struct pim_nexthop *nh2)
{
- return (nh1->interface != nh2->interface) ||
- (nh1->mrib_nexthop_addr.u.prefix4.s_addr != nh2->mrib_nexthop_addr.u.prefix4.s_addr) ||
- (nh1->mrib_metric_preference != nh2->mrib_metric_preference) ||
- (nh1->mrib_route_metric != nh2->mrib_route_metric);
+ return (nh1->interface != nh2->interface)
+ || (nh1->mrib_nexthop_addr.u.prefix4.s_addr
+ != nh2->mrib_nexthop_addr.u.prefix4.s_addr)
+ || (nh1->mrib_metric_preference != nh2->mrib_metric_preference)
+ || (nh1->mrib_route_metric != nh2->mrib_route_metric);
}
-enum pim_rpf_result pim_rpf_update(struct pim_upstream *up, struct pim_rpf *old, uint8_t is_new)
+enum pim_rpf_result pim_rpf_update(struct pim_upstream *up, struct pim_rpf *old,
+ uint8_t is_new)
{
- struct pim_rpf *rpf = &up->rpf;
- struct pim_rpf saved;
- struct prefix nht_p;
- struct pim_nexthop_cache pnc;
- int ret = 0;
- struct prefix src, grp;
-
- saved.source_nexthop = rpf->source_nexthop;
- saved.rpf_addr = rpf->rpf_addr;
-
- if (is_new && PIM_DEBUG_ZEBRA)
- {
- char source_str[INET_ADDRSTRLEN];
- pim_inet4_dump ("<source?>", up->upstream_addr, source_str,
- sizeof (source_str));
- zlog_debug ("%s: NHT Register upstream %s addr %s with Zebra.",
- __PRETTY_FUNCTION__, up->sg_str, source_str);
- }
- /* Register addr with Zebra NHT */
- nht_p.family = AF_INET;
- nht_p.prefixlen = IPV4_MAX_BITLEN;
- nht_p.u.prefix4.s_addr = up->upstream_addr.s_addr;
-
- src.family = AF_INET;
- src.prefixlen = IPV4_MAX_BITLEN;
- src.u.prefix4 = up->upstream_addr; //RP or Src address
- grp.family = AF_INET;
- grp.prefixlen = IPV4_MAX_BITLEN;
- grp.u.prefix4 = up->sg.grp;
- memset (&pnc, 0, sizeof (struct pim_nexthop_cache));
- if ((ret = pim_find_or_track_nexthop (&nht_p, up, NULL, &pnc)) == 1)
- {
- if (pnc.nexthop_num)
- {
- //Compute PIM RPF using Cached nexthop
- if (pim_ecmp_nexthop_search (&pnc, &up->rpf.source_nexthop,
- &src, &grp,
- !PIM_UPSTREAM_FLAG_TEST_FHR (up->flags) &&
- !PIM_UPSTREAM_FLAG_TEST_SRC_IGMP (up->flags)))
-
- {
- return PIM_RPF_FAILURE;
- }
- }
- }
- else
- {
- if (pim_ecmp_nexthop_lookup (&rpf->source_nexthop,
- up->upstream_addr, &src, &grp,
- !PIM_UPSTREAM_FLAG_TEST_FHR (up->flags) &&
- !PIM_UPSTREAM_FLAG_TEST_SRC_IGMP (up->flags)))
- {
- return PIM_RPF_FAILURE;
- }
- }
-
- rpf->rpf_addr.family = AF_INET;
- rpf->rpf_addr.u.prefix4 = pim_rpf_find_rpf_addr(up);
- if (pim_rpf_addr_is_inaddr_any(rpf) && PIM_DEBUG_ZEBRA)
- {
- /* RPF'(S,G) not found */
- zlog_debug("%s %s: RPF'%s not found: won't send join upstream",
- __FILE__, __PRETTY_FUNCTION__,
- up->sg_str);
- /* warning only */
- }
-
- /* detect change in pim_nexthop */
- if (nexthop_mismatch(&rpf->source_nexthop, &saved.source_nexthop)) {
-
- if (PIM_DEBUG_ZEBRA) {
- char nhaddr_str[PREFIX_STRLEN];
- pim_addr_dump("<addr?>", &rpf->source_nexthop.mrib_nexthop_addr, nhaddr_str, sizeof(nhaddr_str));
- zlog_debug("%s %s: (S,G)=%s source nexthop now is: interface=%s address=%s pref=%d metric=%d",
+ struct pim_rpf *rpf = &up->rpf;
+ struct pim_rpf saved;
+ struct prefix nht_p;
+ struct pim_nexthop_cache pnc;
+ int ret = 0;
+ struct prefix src, grp;
+
+ saved.source_nexthop = rpf->source_nexthop;
+ saved.rpf_addr = rpf->rpf_addr;
+
+ if (is_new && PIM_DEBUG_ZEBRA) {
+ char source_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<source?>", up->upstream_addr, source_str,
+ sizeof(source_str));
+ zlog_debug("%s: NHT Register upstream %s addr %s with Zebra.",
+ __PRETTY_FUNCTION__, up->sg_str, source_str);
+ }
+ /* Register addr with Zebra NHT */
+ nht_p.family = AF_INET;
+ nht_p.prefixlen = IPV4_MAX_BITLEN;
+ nht_p.u.prefix4.s_addr = up->upstream_addr.s_addr;
+
+ src.family = AF_INET;
+ src.prefixlen = IPV4_MAX_BITLEN;
+ src.u.prefix4 = up->upstream_addr; // RP or Src address
+ grp.family = AF_INET;
+ grp.prefixlen = IPV4_MAX_BITLEN;
+ grp.u.prefix4 = up->sg.grp;
+ memset(&pnc, 0, sizeof(struct pim_nexthop_cache));
+ if ((ret = pim_find_or_track_nexthop(&nht_p, up, NULL, &pnc)) == 1) {
+ if (pnc.nexthop_num) {
+ // Compute PIM RPF using Cached nexthop
+ if (pim_ecmp_nexthop_search(
+ &pnc, &up->rpf.source_nexthop, &src, &grp,
+ !PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)
+ && !PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(
+ up->flags)))
+
+ {
+ return PIM_RPF_FAILURE;
+ }
+ }
+ } else {
+ if (pim_ecmp_nexthop_lookup(
+ &rpf->source_nexthop, up->upstream_addr, &src, &grp,
+ !PIM_UPSTREAM_FLAG_TEST_FHR(up->flags)
+ && !PIM_UPSTREAM_FLAG_TEST_SRC_IGMP(
+ up->flags))) {
+ return PIM_RPF_FAILURE;
+ }
+ }
+
+ rpf->rpf_addr.family = AF_INET;
+ rpf->rpf_addr.u.prefix4 = pim_rpf_find_rpf_addr(up);
+ if (pim_rpf_addr_is_inaddr_any(rpf) && PIM_DEBUG_ZEBRA) {
+ /* RPF'(S,G) not found */
+ zlog_debug("%s %s: RPF'%s not found: won't send join upstream",
+ __FILE__, __PRETTY_FUNCTION__, up->sg_str);
+ /* warning only */
+ }
+
+ /* detect change in pim_nexthop */
+ if (nexthop_mismatch(&rpf->source_nexthop, &saved.source_nexthop)) {
+
+ if (PIM_DEBUG_ZEBRA) {
+ char nhaddr_str[PREFIX_STRLEN];
+ pim_addr_dump("<addr?>",
+ &rpf->source_nexthop.mrib_nexthop_addr,
+ nhaddr_str, sizeof(nhaddr_str));
+ zlog_debug("%s %s: (S,G)=%s source nexthop now is: interface=%s address=%s pref=%d metric=%d",
__FILE__, __PRETTY_FUNCTION__,
up->sg_str,
rpf->source_nexthop.interface ? rpf->source_nexthop.interface->name : "<ifname?>",
nhaddr_str,
rpf->source_nexthop.mrib_metric_preference,
rpf->source_nexthop.mrib_route_metric);
- }
+ }
- pim_upstream_update_join_desired(up);
- pim_upstream_update_could_assert(up);
- pim_upstream_update_my_assert_metric(up);
- }
+ pim_upstream_update_join_desired(up);
+ pim_upstream_update_could_assert(up);
+ pim_upstream_update_my_assert_metric(up);
+ }
- /* detect change in RPF_interface(S) */
- if (saved.source_nexthop.interface != rpf->source_nexthop.interface) {
+ /* detect change in RPF_interface(S) */
+ if (saved.source_nexthop.interface != rpf->source_nexthop.interface) {
- if (PIM_DEBUG_ZEBRA) {
- zlog_debug("%s %s: (S,G)=%s RPF_interface(S) changed from %s to %s",
+ if (PIM_DEBUG_ZEBRA) {
+ zlog_debug("%s %s: (S,G)=%s RPF_interface(S) changed from %s to %s",
__FILE__, __PRETTY_FUNCTION__,
up->sg_str,
saved.source_nexthop.interface ? saved.source_nexthop.interface->name : "<oldif?>",
rpf->source_nexthop.interface ? rpf->source_nexthop.interface->name : "<newif?>");
- /* warning only */
- }
-
- pim_upstream_rpf_interface_changed(up, saved.source_nexthop.interface);
- }
-
- /* detect change in RPF'(S,G) */
- if (saved.rpf_addr.u.prefix4.s_addr != rpf->rpf_addr.u.prefix4.s_addr ||
- saved.source_nexthop.interface != rpf->source_nexthop.interface)
- {
-
- /* return old rpf to caller ? */
- if (old)
- {
- old->source_nexthop = saved.source_nexthop;
- old->rpf_addr = saved.rpf_addr;
- }
- return PIM_RPF_CHANGED;
- }
-
- return PIM_RPF_OK;
+ /* warning only */
+ }
+
+ pim_upstream_rpf_interface_changed(
+ up, saved.source_nexthop.interface);
+ }
+
+ /* detect change in RPF'(S,G) */
+ if (saved.rpf_addr.u.prefix4.s_addr != rpf->rpf_addr.u.prefix4.s_addr
+ || saved.source_nexthop
+ .interface != rpf->source_nexthop.interface) {
+
+ /* return old rpf to caller ? */
+ if (old) {
+ old->source_nexthop = saved.source_nexthop;
+ old->rpf_addr = saved.rpf_addr;
+ }
+ return PIM_RPF_CHANGED;
+ }
+
+ return PIM_RPF_OK;
}
/*
RFC 4601: 4.1.6. State Summarization Macros
neighbor RPF'(S,G) {
- if ( I_Am_Assert_Loser(S, G, RPF_interface(S) )) {
- return AssertWinner(S, G, RPF_interface(S) )
- } else {
- return NBR( RPF_interface(S), MRIB.next_hop( S ) )
- }
+ if ( I_Am_Assert_Loser(S, G, RPF_interface(S) )) {
+ return AssertWinner(S, G, RPF_interface(S) )
+ } else {
+ return NBR( RPF_interface(S), MRIB.next_hop( S ) )
+ }
}
RPF'(*,G) and RPF'(S,G) indicate the neighbor from which data
@@ -325,84 +321,78 @@ enum pim_rpf_result pim_rpf_update(struct pim_upstream *up, struct pim_rpf *old,
*/
static struct in_addr pim_rpf_find_rpf_addr(struct pim_upstream *up)
{
- struct pim_ifchannel *rpf_ch;
- struct pim_neighbor *neigh;
- struct in_addr rpf_addr;
-
- if (!up->rpf.source_nexthop.interface) {
- zlog_warn("%s: missing RPF interface for upstream (S,G)=%s",
- __PRETTY_FUNCTION__,
- up->sg_str);
-
- rpf_addr.s_addr = PIM_NET_INADDR_ANY;
- return rpf_addr;
- }
-
- rpf_ch = pim_ifchannel_find(up->rpf.source_nexthop.interface,
- &up->sg);
- if (rpf_ch) {
- if (rpf_ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) {
- return rpf_ch->ifassert_winner;
- }
- }
-
- /* return NBR( RPF_interface(S), MRIB.next_hop( S ) ) */
-
- neigh = pim_if_find_neighbor(up->rpf.source_nexthop.interface,
- up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4);
- if (neigh)
- rpf_addr = neigh->source_addr;
- else
- rpf_addr.s_addr = PIM_NET_INADDR_ANY;
-
- return rpf_addr;
+ struct pim_ifchannel *rpf_ch;
+ struct pim_neighbor *neigh;
+ struct in_addr rpf_addr;
+
+ if (!up->rpf.source_nexthop.interface) {
+ zlog_warn("%s: missing RPF interface for upstream (S,G)=%s",
+ __PRETTY_FUNCTION__, up->sg_str);
+
+ rpf_addr.s_addr = PIM_NET_INADDR_ANY;
+ return rpf_addr;
+ }
+
+ rpf_ch = pim_ifchannel_find(up->rpf.source_nexthop.interface, &up->sg);
+ if (rpf_ch) {
+ if (rpf_ch->ifassert_state == PIM_IFASSERT_I_AM_LOSER) {
+ return rpf_ch->ifassert_winner;
+ }
+ }
+
+ /* return NBR( RPF_interface(S), MRIB.next_hop( S ) ) */
+
+ neigh = pim_if_find_neighbor(
+ up->rpf.source_nexthop.interface,
+ up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4);
+ if (neigh)
+ rpf_addr = neigh->source_addr;
+ else
+ rpf_addr.s_addr = PIM_NET_INADDR_ANY;
+
+ return rpf_addr;
}
-int
-pim_rpf_addr_is_inaddr_none (struct pim_rpf *rpf)
+int pim_rpf_addr_is_inaddr_none(struct pim_rpf *rpf)
{
- switch (rpf->rpf_addr.family)
- {
- case AF_INET:
- return rpf->rpf_addr.u.prefix4.s_addr == INADDR_NONE;
- break;
- case AF_INET6:
- zlog_warn ("%s: v6 Unimplmeneted", __PRETTY_FUNCTION__);
- return 1;
- break;
- default:
- return 0;
- break;
- }
-
- return 0;
+ switch (rpf->rpf_addr.family) {
+ case AF_INET:
+ return rpf->rpf_addr.u.prefix4.s_addr == INADDR_NONE;
+ break;
+ case AF_INET6:
+ zlog_warn("%s: v6 Unimplmeneted", __PRETTY_FUNCTION__);
+ return 1;
+ break;
+ default:
+ return 0;
+ break;
+ }
+
+ return 0;
}
-int
-pim_rpf_addr_is_inaddr_any (struct pim_rpf *rpf)
+int pim_rpf_addr_is_inaddr_any(struct pim_rpf *rpf)
{
- switch (rpf->rpf_addr.family)
- {
- case AF_INET:
- return rpf->rpf_addr.u.prefix4.s_addr == INADDR_ANY;
- break;
- case AF_INET6:
- zlog_warn ("%s: v6 Unimplmented", __PRETTY_FUNCTION__);
- return 1;
- break;
- default:
- return 0;
- break;
- }
-
- return 0;
+ switch (rpf->rpf_addr.family) {
+ case AF_INET:
+ return rpf->rpf_addr.u.prefix4.s_addr == INADDR_ANY;
+ break;
+ case AF_INET6:
+ zlog_warn("%s: v6 Unimplmented", __PRETTY_FUNCTION__);
+ return 1;
+ break;
+ default:
+ return 0;
+ break;
+ }
+
+ return 0;
}
-int
-pim_rpf_is_same (struct pim_rpf *rpf1, struct pim_rpf *rpf2)
+int pim_rpf_is_same(struct pim_rpf *rpf1, struct pim_rpf *rpf2)
{
- if (rpf1->source_nexthop.interface == rpf2->source_nexthop.interface)
- return 1;
+ if (rpf1->source_nexthop.interface == rpf2->source_nexthop.interface)
+ return 1;
- return 0;
+ return 0;
}