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authorpaul <paul>2002-12-13 20:59:45 +0000
committerpaul <paul>2002-12-13 20:59:45 +0000
commit7afa08da2d3690baee1739da400775f8543f5863 (patch)
treee050940bb5e77b4cbaed844b689bbd543e2372c7 /ospfd
parent30961a15cf3837b62c65d4c0ecf3ee05f4b6bf55 (diff)
ospfd Point-to-Multipoint support
Diffstat (limited to 'ospfd')
-rw-r--r--ospfd/ospf_lsa.c40
-rw-r--r--ospfd/ospf_packet.c2
-rw-r--r--ospfd/ospf_spf.c41
3 files changed, 72 insertions, 11 deletions
diff --git a/ospfd/ospf_lsa.c b/ospfd/ospf_lsa.c
index 5b63a76d..6d7af058 100644
--- a/ospfd/ospf_lsa.c
+++ b/ospfd/ospf_lsa.c
@@ -589,6 +589,44 @@ lsa_link_virtuallink_set (struct stream *s, struct ospf_interface *oi)
#define lsa_link_nbma_set(S,O) lsa_link_broadcast_set (S, O)
+/* this function add for support point-to-multipoint ,see rfc2328
+12.4.1.4.*/
+/* from "edward rrr" <edward_rrr@hotmail.com>
+ http://marc.theaimsgroup.com/?l=zebra&m=100739222210507&w=2 */
+int lsa_link_ptomultip_set (struct stream *s, struct ospf_interface *oi)
+{
+ int links = 0;
+ struct route_node *rn;
+ struct ospf_neighbor *nbr = NULL;
+ struct in_addr id, mask;
+
+ mask.s_addr = 0xffffffff;
+ id.s_addr = oi->address->u.prefix4.s_addr;
+ link_info_set (s, id, mask, LSA_LINK_TYPE_STUB, 0, 0);
+ links++;
+
+ zlog_info ("PointToMultipoint: running ptomultip_set");
+
+ /* Search neighbor, */
+ for (rn = route_top (oi->nbrs); rn; rn = route_next (rn))
+ if ((nbr = rn->info) != NULL)
+ /* Ignore myself. */
+ if (!IPV4_ADDR_SAME (&nbr->router_id, &ospf_top->router_id))
+ if (nbr->state == NSM_Full)
+
+ {
+
+ link_info_set (s, nbr->router_id, oi->address->u.prefix4,
+ LSA_LINK_TYPE_POINTOPOINT, 0, oi->output_cost);
+ links++;
+ zlog_info ("PointToMultipoint: set link to %s",
+ inet_ntoa(oi->address->u.prefix4));
+ }
+
+ return links;
+
+}
+
/* Set router-LSA link information. */
int
router_lsa_link_set (struct stream *s, struct ospf_area *area)
@@ -619,7 +657,7 @@ router_lsa_link_set (struct stream *s, struct ospf_area *area)
links += lsa_link_nbma_set (s, oi);
break;
case OSPF_IFTYPE_POINTOMULTIPOINT:
- /* Not supproted yet. */
+ links += lsa_link_ptomultip_set (s, oi);
break;
case OSPF_IFTYPE_VIRTUALLINK:
links += lsa_link_virtuallink_set (s, oi);
diff --git a/ospfd/ospf_packet.c b/ospfd/ospf_packet.c
index 62b93fef..d2338fff 100644
--- a/ospfd/ospf_packet.c
+++ b/ospfd/ospf_packet.c
@@ -3137,6 +3137,8 @@ ospf_ls_upd_send (struct ospf_neighbor *nbr, list update, int flag)
else if ((oi->type == OSPF_IFTYPE_POINTOPOINT)
&& (flag == OSPF_SEND_PACKET_INDIRECT))
p.prefix.s_addr = htonl (OSPF_ALLSPFROUTERS);
+ else if (oi->type == OSPF_IFTYPE_POINTOMULTIPOINT)
+ p.prefix.s_addr = htonl (OSPF_ALLSPFROUTERS);
else
p.prefix.s_addr = htonl (OSPF_ALLDROUTERS);
diff --git a/ospfd/ospf_spf.c b/ospfd/ospf_spf.c
index d6254717..6e92bb20 100644
--- a/ospfd/ospf_spf.c
+++ b/ospfd/ospf_spf.c
@@ -365,18 +365,39 @@ ospf_nexthop_calculation (struct ospf_area *area,
if (l->m[0].type == LSA_LINK_TYPE_POINTOPOINT)
{
- while ((l2 = ospf_get_next_link (w, v, l2)))
+ /* check for PtMP, signified by PtP link V->W with link_data our PtMP interface */
+ oi = ospf_if_is_configured(&l->link_data);
+ if (oi && oi->type == OSPF_IFTYPE_POINTOMULTIPOINT)
{
- oi = ospf_if_is_configured (&(l2->link_data));
+
+ struct prefix_ipv4 * la = prefix_ipv4_new();
+ la->prefixlen = oi->address->prefixlen;
- if (oi == NULL)
- continue;
-
- if (! IPV4_ADDR_SAME (&oi->address->u.prefix4,
- &l->link_data))
- continue;
-
- break;
+ /* we link to them on PtMP interface - find the interface on w */
+ while ((l2 = ospf_get_next_link (w, v, l2)))
+ {
+ la->prefix = l2->link_data;
+
+ if (prefix_cmp((struct prefix *)la, oi->address) == 0)
+ /* link_data is on our PtMP network */
+ break;
+
+ }
+ }
+ else
+ {
+ while ((l2 = ospf_get_next_link (w, v, l2)))
+ {
+ oi = ospf_if_is_configured (&(l2->link_data));
+
+ if (oi == NULL)
+ continue;
+
+ if (!IPV4_ADDR_SAME (&oi->address->u.prefix4, &l->link_data))
+ continue;
+
+ break;
+ }
}
if (oi && l2)