/* If force flag is not set, do not modify falgs at all for uninstall
the route from FIB. */
static int
-nexthop_active_ipv4 (struct rib *rib, struct nexthop *nexthop, int set,
- struct route_node *top)
+nexthop_active (afi_t afi, struct rib *rib, struct nexthop *nexthop, int set,
+ struct route_node *top)
{
- struct prefix_ipv4 p;
+ struct prefix p;
struct route_table *table;
struct route_node *rn;
struct rib *match;
int recursing = 0;
struct interface *ifp;
- if (nexthop->type == NEXTHOP_TYPE_IPV4)
+ if ((nexthop->type == NEXTHOP_TYPE_IPV4) || nexthop->type == NEXTHOP_TYPE_IPV6)
nexthop->ifindex = 0;
if (set)
}
/* Make lookup prefix. */
- memset (&p, 0, sizeof (struct prefix_ipv4));
- p.family = AF_INET;
- p.prefixlen = IPV4_MAX_PREFIXLEN;
- p.prefix = nexthop->gate.ipv4;
-
+ memset (&p, 0, sizeof (struct prefix));
+ switch (afi)
+ {
+ case AFI_IP:
+ p.family = AF_INET;
+ p.prefixlen = IPV4_MAX_PREFIXLEN;
+ p.u.prefix4 = nexthop->gate.ipv4;
+ break;
+ case AFI_IP6:
+ p.family = AF_INET6;
+ p.prefixlen = IPV6_MAX_PREFIXLEN;
+ p.u.prefix6 = nexthop->gate.ipv6;
+ break;
+ default:
+ assert (afi != AFI_IP && afi != AFI_IP6);
+ break;
+ }
/* Lookup table. */
- table = zebra_vrf_table (AFI_IP, SAFI_UNICAST, rib->vrf_id);
+ table = zebra_vrf_table (afi, SAFI_UNICAST, rib->vrf_id);
if (! table)
return 0;
{
/* Directly point connected route. */
newhop = match->nexthop;
- if (newhop && nexthop->type == NEXTHOP_TYPE_IPV4)
- nexthop->ifindex = newhop->ifindex;
-
+ if (newhop)
+ {
+ if (nexthop->type == NEXTHOP_TYPE_IPV4)
+ {
+ nexthop->ifindex = newhop->ifindex;
+ nexthop->type = NEXTHOP_TYPE_IPV4;
+ }
+ if (nexthop->type == NEXTHOP_TYPE_IPV6)
+ {
+ nexthop->ifindex = newhop->ifindex;
+ nexthop->type = NEXTHOP_TYPE_IPV6_IFINDEX;
+ }
+ }
return 1;
}
else if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_INTERNAL))
resolved_hop->flags |= NEXTHOP_FLAG_ONLINK;
}
}
+ if (newhop->type == NEXTHOP_TYPE_IPV6
+ || newhop->type == NEXTHOP_TYPE_IPV6_IFINDEX)
+ {
+ resolved_hop->type = newhop->type;
+ resolved_hop->gate.ipv6 = newhop->gate.ipv6;
+
+ if (newhop->ifindex)
+ {
+ resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX;
+ resolved_hop->ifindex = newhop->ifindex;
+ }
+ }
/* If the resolving route is an interface route,
* it means the gateway we are looking up is connected
if (newhop->type == NEXTHOP_TYPE_IFINDEX)
{
resolved_hop->flags |= NEXTHOP_FLAG_ONLINK;
- resolved_hop->type = NEXTHOP_TYPE_IPV4_IFINDEX;
- resolved_hop->gate.ipv4 = nexthop->gate.ipv4;
+ if (afi == AFI_IP)
+ {
+ resolved_hop->type = NEXTHOP_TYPE_IPV4_IFINDEX;
+ resolved_hop->gate.ipv4 = nexthop->gate.ipv4;
+ }
+ else if (afi == AFI_IP6)
+ {
+ resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX;
+ resolved_hop->gate.ipv6 = nexthop->gate.ipv6;
+ }
resolved_hop->ifindex = newhop->ifindex;
}
resolved_hop->flags |= NEXTHOP_FLAG_ONLINK;
}
}
-
- /* If the resolving route is an interface route,
- * it means the gateway we are looking up is connected
- * to that interface. (The actual network is _not_ onlink).
- * Therefore, the resolved route should have the original
- * gateway as nexthop as it is directly connected.
- *
- * On Linux, we have to set the onlink netlink flag because
- * otherwise, the kernel won't accept the route.
- */
- if (newhop->type == NEXTHOP_TYPE_IFINDEX)
- {
- resolved_hop->flags |= NEXTHOP_FLAG_ONLINK;
- resolved_hop->type = NEXTHOP_TYPE_IPV4_IFINDEX;
- resolved_hop->gate.ipv4 = nexthop->gate.ipv4;
- resolved_hop->ifindex = newhop->ifindex;
- }
-
- nexthop_add(&nexthop->resolved, resolved_hop);
- }
- resolved = 1;
- }
- if (resolved && set)
- rib->nexthop_mtu = match->mtu;
- return resolved;
- }
- else
- {
- return 0;
- }
- }
- }
- return 0;
-}
-
-/* If force flag is not set, do not modify falgs at all for uninstall
- the route from FIB. */
-static int
-nexthop_active_ipv6 (struct rib *rib, struct nexthop *nexthop, int set,
- struct route_node *top)
-{
- struct prefix_ipv6 p;
- struct route_table *table;
- struct route_node *rn;
- struct rib *match;
- int resolved;
- struct nexthop *newhop, *tnewhop;
- int recursing = 0;
- struct nexthop *resolved_hop;
-
- if (nexthop->type == NEXTHOP_TYPE_IPV6)
- nexthop->ifindex = 0;
-
- if (set)
- {
- UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE);
- zebra_deregister_rnh_static_nexthops (rib->vrf_id, nexthop->resolved, top);
- nexthops_free(nexthop->resolved);
- nexthop->resolved = NULL;
- }
-
- /* Skip nexthops that have been filtered out due to route-map */
- /* The nexthops are specific to this route and so the same */
- /* nexthop for a different route may not have this flag set */
- if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_FILTERED))
- return 0;
-
- /* Make lookup prefix. */
- memset (&p, 0, sizeof (struct prefix_ipv6));
- p.family = AF_INET6;
- p.prefixlen = IPV6_MAX_PREFIXLEN;
- p.prefix = nexthop->gate.ipv6;
-
- /* Lookup table. */
- table = zebra_vrf_table (AFI_IP6, SAFI_UNICAST, rib->vrf_id);
- if (! table)
- return 0;
-
- rn = route_node_match (table, (struct prefix *) &p);
- while (rn)
- {
- route_unlock_node (rn);
-
- /* If lookup self prefix return immediately. */
- if (rn == top)
- return 0;
-
- /* Pick up selected route. */
- /* However, do not resolve over default route unless explicitly allowed. */
- if (is_default_prefix (&rn->p) &&
- !nh_resolve_via_default (p.family))
- return 0;
-
- RNODE_FOREACH_RIB (rn, match)
- {
- if (CHECK_FLAG (match->status, RIB_ENTRY_REMOVED))
- continue;
- if (CHECK_FLAG (match->status, RIB_ENTRY_SELECTED_FIB))
- break;
- }
-
- /* If there is no selected route or matched route is EGP, go up
- tree. */
- if (! match)
- {
- do {
- rn = rn->parent;
- } while (rn && rn->info == NULL);
- if (rn)
- route_lock_node (rn);
- }
- else
- {
- /* If the longest prefix match for the nexthop yields
- * a blackhole, mark it as inactive. */
- if (CHECK_FLAG (match->flags, ZEBRA_FLAG_BLACKHOLE)
- || CHECK_FLAG (match->flags, ZEBRA_FLAG_REJECT))
- return 0;
-
- if (match->type == ZEBRA_ROUTE_CONNECT)
- {
- /* Directly point connected route. */
- newhop = match->nexthop;
-
- if (newhop && nexthop->type == NEXTHOP_TYPE_IPV6)
- nexthop->ifindex = newhop->ifindex;
-
- return 1;
- }
- else if (CHECK_FLAG (rib->flags, ZEBRA_FLAG_INTERNAL))
- {
- resolved = 0;
- for (newhop = match->nexthop; newhop; newhop = newhop->next)
- if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB)
- && ! CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_RECURSIVE))
- {
- if (set)
- {
- SET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE);
- SET_FLAG(rib->status, RIB_ENTRY_NEXTHOPS_CHANGED);
-
- resolved_hop = nexthop_new();
- SET_FLAG (resolved_hop->flags, NEXTHOP_FLAG_ACTIVE);
- /* See nexthop_active_ipv4 for a description how the
- * resolved nexthop is constructed. */
if (newhop->type == NEXTHOP_TYPE_IPV6
|| newhop->type == NEXTHOP_TYPE_IPV6_IFINDEX)
{
}
}
+ /* If the resolving route is an interface route,
+ * it means the gateway we are looking up is connected
+ * to that interface. (The actual network is _not_ onlink).
+ * Therefore, the resolved route should have the original
+ * gateway as nexthop as it is directly connected.
+ *
+ * On Linux, we have to set the onlink netlink flag because
+ * otherwise, the kernel won't accept the route.
+ */
if (newhop->type == NEXTHOP_TYPE_IFINDEX)
{
- resolved_hop->flags |= NEXTHOP_FLAG_ONLINK;
- resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX;
- resolved_hop->gate.ipv6 = nexthop->gate.ipv6;
- resolved_hop->ifindex = newhop->ifindex;
- }
-
- nexthop_add(&nexthop->resolved, resolved_hop);
- }
- resolved = 1;
- }
- return resolved;
- }
- else if (rib->type == ZEBRA_ROUTE_STATIC)
- {
- resolved = 0;
- for (ALL_NEXTHOPS_RO(match->nexthop, newhop, tnewhop, recursing))
- if (CHECK_FLAG (newhop->flags, NEXTHOP_FLAG_FIB))
- {
- if (set)
- {
- SET_FLAG (nexthop->flags, NEXTHOP_FLAG_RECURSIVE);
-
- resolved_hop = nexthop_new();
- SET_FLAG (resolved_hop->flags, NEXTHOP_FLAG_ACTIVE);
- /* See nexthop_active_ipv4 for a description how the
- * resolved nexthop is constructed. */
- if (newhop->type == NEXTHOP_TYPE_IPV6
- || newhop->type == NEXTHOP_TYPE_IPV6_IFINDEX)
- {
- resolved_hop->type = newhop->type;
- resolved_hop->gate.ipv6 = newhop->gate.ipv6;
-
- if (newhop->ifindex)
+ resolved_hop->flags |= NEXTHOP_FLAG_ONLINK;
+ if (afi == AFI_IP)
{
- resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX;
- resolved_hop->ifindex = newhop->ifindex;
+ resolved_hop->type = NEXTHOP_TYPE_IPV4_IFINDEX;
+ resolved_hop->gate.ipv4 = nexthop->gate.ipv4;
}
- }
-
- if (newhop->type == NEXTHOP_TYPE_IFINDEX)
- {
- resolved_hop->flags |= NEXTHOP_FLAG_ONLINK;
+ else if (afi == AFI_IP6)
+ {
resolved_hop->type = NEXTHOP_TYPE_IPV6_IFINDEX;
resolved_hop->gate.ipv6 = nexthop->gate.ipv6;
- resolved_hop->ifindex = newhop->ifindex;
+ }
+ resolved_hop->ifindex = newhop->ifindex;
}
nexthop_add(&nexthop->resolved, resolved_hop);
}
resolved = 1;
}
+ if (resolved && set)
+ rib->nexthop_mtu = match->mtu;
return resolved;
}
else
case NEXTHOP_TYPE_IPV4:
case NEXTHOP_TYPE_IPV4_IFINDEX:
family = AFI_IP;
- if (nexthop_active_ipv4 (rib, nexthop, set, rn))
+ if (nexthop_active (AFI_IP, rib, nexthop, set, rn))
SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE);
else
UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE);
break;
case NEXTHOP_TYPE_IPV6:
family = AFI_IP6;
- if (nexthop_active_ipv6 (rib, nexthop, set, rn))
+ if (nexthop_active (AFI_IP6, rib, nexthop, set, rn))
SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE);
else
UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE);
}
else
{
- if (nexthop_active_ipv6 (rib, nexthop, set, rn))
+ if (nexthop_active (AFI_IP6, rib, nexthop, set, rn))
SET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE);
else
UNSET_FLAG (nexthop->flags, NEXTHOP_FLAG_ACTIVE);
projects / matthieu / frr.git / commitdiff