#include "pim_iface.h"
#include "pim_zlookup.h"
#include "pim_ifchannel.h"
+#include "pim_time.h"
+
+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);
-int pim_nexthop_lookup(struct pim_nexthop *nexthop,
- struct in_addr addr, struct interface *incoming)
+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);
+}
+
+int pim_nexthop_lookup(struct pim_nexthop *nexthop, struct in_addr addr, int neighbor_needed)
{
- struct pim_zlookup_nexthop nexthop_tab[PIM_NEXTHOP_IFINDEX_TAB_SIZE];
+ struct pim_zlookup_nexthop nexthop_tab[MULTIPATH_NUM];
int num_ifindex;
struct interface *ifp;
int first_ifindex;
+ int found = 0;
+ int i = 0;
- memset (nexthop_tab, 0, sizeof (struct pim_zlookup_nexthop) * PIM_NEXTHOP_IFINDEX_TAB_SIZE);
-
- if (!incoming)
+ if ((nexthop->last_lookup.s_addr == addr.s_addr) &&
+ (nexthop->last_lookup_time > last_route_change_time))
{
- num_ifindex = zclient_lookup_nexthop(qpim_zclient_lookup, nexthop_tab,
- PIM_NEXTHOP_IFINDEX_TAB_SIZE,
- addr, PIM_NEXTHOP_LOOKUP_MAX);
- if (num_ifindex < 1) {
- char addr_str[100];
- 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;
- }
-
- first_ifindex = nexthop_tab[0].ifindex;
-
- if (num_ifindex > 1) {
- char addr_str[100];
- pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
- zlog_info("%s %s: FIXME ignoring multiple nexthop ifindex'es num_ifindex=%d for address %s (using only ifindex=%d)",
- __FILE__, __PRETTY_FUNCTION__,
- num_ifindex, addr_str, first_ifindex);
- /* debug warning only, do not return */
- }
-
- ifp = if_lookup_by_index(first_ifindex);
- if (!ifp) {
- char addr_str[100];
- pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
- zlog_warn("%s %s: could not find interface for ifindex %d (address %s)",
- __FILE__, __PRETTY_FUNCTION__,
- first_ifindex, addr_str);
- return -2;
- }
+ if (PIM_DEBUG_TRACE)
+ {
+ char addr_str[INET_ADDRSTRLEN];
+ pim_inet4_dump("<addr?>", addr, addr_str, sizeof(addr_str));
+ zlog_debug ("%s: Using last lookup for %s at %lld, %lld",
+ __PRETTY_FUNCTION__,
+ addr_str,
+ nexthop->last_lookup_time,
+ last_route_change_time);
+ }
+ nexthop_lookups_avoided++;
+ return 0;
}
else
{
- ifp = incoming;
- first_ifindex = ifp->ifindex;
+ 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);
+ }
}
- if (!ifp->info) {
- char addr_str[100];
+ 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: multicast not enabled on input interface %s (ifindex=%d, RPF for source %s)",
- __PRETTY_FUNCTION__,
- ifp->name, first_ifindex, addr_str);
- /* debug warning only, do not return */
+ zlog_warn("%s %s: could not find nexthop ifindex for address %s",
+ __FILE__, __PRETTY_FUNCTION__,
+ addr_str);
+ return -1;
}
- if (PIM_DEBUG_PIM_TRACE) {
- char nexthop_str[100];
- char addr_str[100];
- pim_inet4_dump("<nexthop?>", nexthop_tab[0].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[0].route_metric,
- nexthop_tab[0].protocol_distance);
- }
+ while (!found && (i < num_ifindex))
+ {
+ first_ifindex = nexthop_tab[i].ifindex;
- /* update nextop data */
- nexthop->interface = ifp;
- nexthop->mrib_nexthop_addr = nexthop_tab[0].nexthop_addr;
- nexthop->mrib_metric_preference = nexthop_tab[0].protocol_distance;
- nexthop->mrib_route_metric = nexthop_tab[0].route_metric;
+ ifp = if_lookup_by_index(first_ifindex);
+ 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))
+ {
+ struct pim_neighbor *nbr;
+
+ 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;
+ }
- return 0;
+ 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();
+ 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.s_addr != nh2->mrib_nexthop_addr.s_addr)
- ||
- (nh1->mrib_metric_preference != nh2->mrib_metric_preference)
- ||
+ 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 in_addr *old_rpf_addr,
- struct interface *incoming)
+enum pim_rpf_result pim_rpf_update(struct pim_upstream *up, struct in_addr *old_rpf_addr)
{
- struct in_addr save_rpf_addr;
+ struct prefix save_rpf_addr;
struct pim_nexthop save_nexthop;
struct pim_rpf *rpf = &up->rpf;
save_rpf_addr = rpf->rpf_addr; /* detect change in RPF'(S,G) */
if (pim_nexthop_lookup(&rpf->source_nexthop,
- up->upstream_addr, incoming)) {
+ up->upstream_addr,
+ !PIM_UPSTREAM_FLAG_TEST_FHR (up->flags) &&
+ !PIM_UPSTREAM_FLAG_TEST_SRC_IGMP (up->flags))) {
return PIM_RPF_FAILURE;
}
- rpf->rpf_addr = pim_rpf_find_rpf_addr(up);
- if (PIM_INADDR_IS_ANY(rpf->rpf_addr) && PIM_DEBUG_PIM_EVENTS) {
+ 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 */
- char src_str[100];
- char grp_str[100];
- pim_inet4_dump("<src?>", up->source_addr, src_str, sizeof(src_str));
- pim_inet4_dump("<grp?>", up->group_addr, grp_str, sizeof(grp_str));
- zlog_debug("%s %s: RPF'(%s,%s) not found: won't send join upstream",
+ zlog_debug("%s %s: RPF'%s not found: won't send join upstream",
__FILE__, __PRETTY_FUNCTION__,
- src_str, grp_str);
+ up->sg_str);
/* warning only */
}
/* detect change in pim_nexthop */
if (nexthop_mismatch(&rpf->source_nexthop, &save_nexthop)) {
- if (PIM_DEBUG_PIM_EVENTS) {
- char src_str[100];
- char grp_str[100];
- char nhaddr_str[100];
- pim_inet4_dump("<src?>", up->source_addr, src_str, sizeof(src_str));
- pim_inet4_dump("<grp?>", up->group_addr, grp_str, sizeof(grp_str));
- pim_inet4_dump("<addr?>", rpf->source_nexthop.mrib_nexthop_addr, nhaddr_str, sizeof(nhaddr_str));
- zlog_debug("%s %s: (S,G)=(%s,%s) source nexthop now is: interface=%s address=%s pref=%d metric=%d",
+ 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__,
- src_str, grp_str,
+ up->sg_str,
rpf->source_nexthop.interface ? rpf->source_nexthop.interface->name : "<ifname?>",
nhaddr_str,
rpf->source_nexthop.mrib_metric_preference,
/* detect change in RPF_interface(S) */
if (save_nexthop.interface != rpf->source_nexthop.interface) {
- if (PIM_DEBUG_PIM_EVENTS) {
- char src_str[100];
- char grp_str[100];
- pim_inet4_dump("<src?>", up->source_addr, src_str, sizeof(src_str));
- pim_inet4_dump("<grp?>", up->group_addr, grp_str, sizeof(grp_str));
- zlog_debug("%s %s: (S,G)=(%s,%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__,
- src_str, grp_str,
+ up->sg_str,
save_nexthop.interface ? save_nexthop.interface->name : "<oldif?>",
rpf->source_nexthop.interface ? rpf->source_nexthop.interface->name : "<newif?>");
/* warning only */
}
/* detect change in RPF'(S,G) */
- if (save_rpf_addr.s_addr != rpf->rpf_addr.s_addr) {
+ if (save_rpf_addr.u.prefix4.s_addr != rpf->rpf_addr.u.prefix4.s_addr) {
/* return old rpf to caller ? */
if (old_rpf_addr)
- *old_rpf_addr = save_rpf_addr;
+ *old_rpf_addr = save_rpf_addr.u.prefix4;
return PIM_RPF_CHANGED;
}
struct in_addr rpf_addr;
if (!up->rpf.source_nexthop.interface) {
- char src_str[100];
- char grp_str[100];
- pim_inet4_dump("<src?>", up->source_addr, src_str, sizeof(src_str));
- pim_inet4_dump("<grp?>", up->group_addr, grp_str, sizeof(grp_str));
- zlog_warn("%s: missing RPF interface for upstream (S,G)=(%s,%s)",
+ zlog_warn("%s: missing RPF interface for upstream (S,G)=%s",
__PRETTY_FUNCTION__,
- src_str, grp_str);
+ 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->source_addr, up->group_addr);
+ &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);
+ up->rpf.source_nexthop.mrib_nexthop_addr.u.prefix4);
if (neigh)
rpf_addr = neigh->source_addr;
else
return rpf_addr;
}
+
+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;
+}
+
+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;
+}
+
+int
+pim_rpf_is_same (struct pim_rpf *rpf1, struct pim_rpf *rpf2)
+{
+ if (rpf1->source_nexthop.interface == rpf2->source_nexthop.interface)
+ return 1;
+
+ return 0;
+}
projects / mirror_frr.git / blobdiff