diff options
Diffstat (limited to 'ospfd/ospf_lsa.c')
| -rw-r--r-- | ospfd/ospf_lsa.c | 72 |
1 files changed, 51 insertions, 21 deletions
diff --git a/ospfd/ospf_lsa.c b/ospfd/ospf_lsa.c index 27e7e02759..7ef9834274 100644 --- a/ospfd/ospf_lsa.c +++ b/ospfd/ospf_lsa.c @@ -539,16 +539,23 @@ static int lsa_link_ptop_set(struct stream **s, struct ospf_interface *oi) } /* no need for a stub link for unnumbered interfaces */ - if (oi->ptp_dmvpn - || !CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) { - /* Regardless of the state of the neighboring router, we must - add a Type 3 link (stub network). - N.B. Options 1 & 2 share basically the same logic. */ - masklen2ip(oi->address->prefixlen, &mask); - id.s_addr = CONNECTED_PREFIX(oi->connected)->u.prefix4.s_addr - & mask.s_addr; - links += link_info_set(s, id, mask, LSA_LINK_TYPE_STUB, 0, - oi->output_cost); + if (OSPF_IF_PARAM(oi, prefix_suppression)) { + if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) + zlog_debug("LSA[Type1]: Interface %s stub link omitted due prefix-suppression", + oi->ifp->name); + } else { + if (oi->ptp_dmvpn || + !CHECK_FLAG(oi->connected->flags, ZEBRA_IFA_UNNUMBERED)) { + /* Regardless of the state of the neighboring router, we must + add a Type 3 link (stub network). + N.B. Options 1 & 2 share basically the same logic. */ + masklen2ip(oi->address->prefixlen, &mask); + id.s_addr = + CONNECTED_PREFIX(oi->connected)->u.prefix4.s_addr & + mask.s_addr; + links += link_info_set(s, id, mask, LSA_LINK_TYPE_STUB, + 0, oi->output_cost); + } } return links; @@ -563,10 +570,15 @@ static int lsa_link_broadcast_set(struct stream **s, struct ospf_interface *oi) /* Describe Type 3 Link. */ if (oi->state == ISM_Waiting) { + if (OSPF_IF_PARAM(oi, prefix_suppression)) { + if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) + zlog_debug("LSA[Type1]: Interface %s stub link omitted due prefix-suppression", + oi->ifp->name); + return 0; + } if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) - zlog_debug( - "LSA[Type1]: Interface %s is in state Waiting. Adding stub interface", - oi->ifp->name); + zlog_debug("LSA[Type1]: Interface %s is in state Waiting. Adding stub interface", + oi->ifp->name); masklen2ip(oi->address->prefixlen, &mask); id.s_addr = oi->address->u.prefix4.s_addr & mask.s_addr; return link_info_set(s, id, mask, LSA_LINK_TYPE_STUB, 0, @@ -587,10 +599,15 @@ static int lsa_link_broadcast_set(struct stream **s, struct ospf_interface *oi) } /* Describe type 3 link. */ else { + if (OSPF_IF_PARAM(oi, prefix_suppression)) { + if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) + zlog_debug("LSA[Type1]: Interface %s stub link omitted due prefix-suppression", + oi->ifp->name); + return 0; + } if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) - zlog_debug( - "LSA[Type1]: Interface %s has no DR. Adding stub interface", - oi->ifp->name); + zlog_debug("LSA[Type1]: Interface %s has no DR. Adding stub interface", + oi->ifp->name); masklen2ip(oi->address->prefixlen, &mask); id.s_addr = oi->address->u.prefix4.s_addr & mask.s_addr; return link_info_set(s, id, mask, LSA_LINK_TYPE_STUB, 0, @@ -603,7 +620,7 @@ static int lsa_link_loopback_set(struct stream **s, struct ospf_interface *oi) struct in_addr id, mask; /* Describe Type 3 Link. */ - if (oi->state != ISM_Loopback) + if ((oi->state != ISM_Loopback) || OSPF_IF_PARAM(oi, prefix_suppression)) return 0; mask.s_addr = 0xffffffff; @@ -645,9 +662,15 @@ static int lsa_link_ptomp_set(struct stream **s, struct ospf_interface *oi) struct in_addr id, mask; uint16_t cost = ospf_link_cost(oi); - mask.s_addr = 0xffffffff; - id.s_addr = oi->address->u.prefix4.s_addr; - links += link_info_set(s, id, mask, LSA_LINK_TYPE_STUB, 0, 0); + if (OSPF_IF_PARAM(oi, prefix_suppression)) { + if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) + zlog_debug("LSA[Type1]: Interface %s stub link omitted due prefix-suppression", + oi->ifp->name); + } else { + mask.s_addr = 0xffffffff; + id.s_addr = oi->address->u.prefix4.s_addr; + links += link_info_set(s, id, mask, LSA_LINK_TYPE_STUB, 0, 0); + } if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) zlog_debug("PointToMultipoint: running ptomultip_set"); @@ -1006,7 +1029,14 @@ static void ospf_network_lsa_body_set(struct stream *s, struct route_node *rn; struct ospf_neighbor *nbr; - masklen2ip(oi->address->prefixlen, &mask); + if (OSPF_IF_PARAM(oi, prefix_suppression)) { + mask.s_addr = 0xffffffff; + if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) + zlog_debug("LSA[Type2]: Interface %s network mask set to host mask due prefix-suppression", + oi->ifp->name); + } else { + masklen2ip(oi->address->prefixlen, &mask); + } stream_put_ipv4(s, mask.s_addr); /* The network-LSA lists those routers that are fully adjacent to |