diff options
Diffstat (limited to 'proto/ospf')
| -rw-r--r-- | proto/ospf/config.Y | 1 | ||||
| -rw-r--r-- | proto/ospf/lsupd.c | 4 | ||||
| -rw-r--r-- | proto/ospf/topology.c | 74 |
3 files changed, 53 insertions, 26 deletions
diff --git a/proto/ospf/config.Y b/proto/ospf/config.Y index 67b0785f..a617292e 100644 --- a/proto/ospf/config.Y +++ b/proto/ospf/config.Y @@ -92,6 +92,7 @@ ospf_proto_finish(void) if (cf->abr && !backbone) { struct ospf_area_config *ac = cfg_allocz(sizeof(struct ospf_area_config)); + ac->type = OPT_E; /* Backbone is non-stub */ add_head(&cf->area_list, NODE ac); init_list(&ac->patt_list); init_list(&ac->net_list); diff --git a/proto/ospf/lsupd.c b/proto/ospf/lsupd.c index 16967a7f..633ed533 100644 --- a/proto/ospf/lsupd.c +++ b/proto/ospf/lsupd.c @@ -112,6 +112,10 @@ ospf_lsa_flooding_allowed(struct ospf_lsa_header *lsa, u32 domain, struct ospf_i { u32 scope = LSA_SCOPE(lsa); + /* Handle inactive vlinks */ + if (ifa->state == OSPF_IS_DOWN) + return 0; + /* 4.5.2 (Case 2) */ if (unknown_lsa_type(lsa) && !(lsa->type & LSA_UBIT)) scope = LSA_SCOPE_LINK; diff --git a/proto/ospf/topology.c b/proto/ospf/topology.c index ec012b22..a9be12ee 100644 --- a/proto/ospf/topology.c +++ b/proto/ospf/topology.c @@ -1249,7 +1249,6 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length) struct ospf_config *cf = (struct ospf_config *) (po->proto.cf); struct ospf_iface *ifa; struct ospf_lsa_prefix *lp; - struct ifa *vlink_addr = NULL; int host_addr = 0; int net_lsa; int i = 0; @@ -1263,7 +1262,7 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length) WALK_LIST(ifa, po->iface_list) { - if ((ifa->oa != oa) || (ifa->state == OSPF_IS_DOWN)) + if ((ifa->oa != oa) || (ifa->type == OSPF_IT_VLINK) || (ifa->state == OSPF_IS_DOWN)) continue; ifa->px_pos_beg = i; @@ -1282,9 +1281,6 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length) (a->scope <= SCOPE_LINK)) continue; - if (!vlink_addr) - vlink_addr = a; - if (((a->pxlen < MAX_PREFIX_LENGTH) && net_lsa) || configured_stubnet(oa, a)) continue; @@ -1304,23 +1300,41 @@ originate_prefix_rt_lsa_body(struct ospf_area *oa, u16 *length) ifa->px_pos_end = i; } - /* If there are some configured vlinks, add some global address, - which will be used as a vlink endpoint. */ - if (!EMPTY_LIST(cf->vlink_list) && !host_addr && vlink_addr) - { - lsa_put_prefix(po, vlink_addr->ip, MAX_PREFIX_LENGTH, 0); - i++; - } - struct ospf_stubnet_config *sn; if (oa->ac) WALK_LIST(sn, oa->ac->stubnet_list) if (!sn->hidden) { lsa_put_prefix(po, sn->px.addr, sn->px.len, sn->cost); + if (sn->px.len == MAX_PREFIX_LENGTH) + host_addr = 1; + i++; + } + + /* If there are some configured vlinks, find some global address + (even from another area), which will be used as a vlink endpoint. */ + if (!EMPTY_LIST(cf->vlink_list) && !host_addr) + { + WALK_LIST(ifa, po->iface_list) + { + if ((ifa->type == OSPF_IT_VLINK) || (ifa->state == OSPF_IS_DOWN)) + continue; + + struct ifa *a; + WALK_LIST(a, ifa->iface->addrs) + { + if ((a->flags & IA_SECONDARY) || (a->scope <= SCOPE_LINK)) + continue; + + /* Found some IP */ + lsa_put_prefix(po, a->ip, MAX_PREFIX_LENGTH, 0); i++; + goto done; } + } + } + done: lp = po->lsab; lp->pxcount = i; *length = po->lsab_used + sizeof(struct ospf_lsa_header); @@ -1389,15 +1403,12 @@ add_prefix(struct proto_ospf *po, u32 *px, int offset, int *pxc) { u32 *pxl = lsab_offset(po, offset); int i; - for (i = 0; i < *pxc; i++) + for (i = 0; i < *pxc; pxl = prefix_advance(pxl), i++) + if (prefix_same(px, pxl)) { - if (prefix_same(px, pxl)) - { - /* Options should be logically OR'ed together */ - *pxl |= *px; - return; - } - pxl = prefix_advance(pxl); + /* Options should be logically OR'ed together */ + *pxl |= (*px & 0x00FF0000); + return; } ASSERT(pxl == lsab_end(po)); @@ -1405,6 +1416,7 @@ add_prefix(struct proto_ospf *po, u32 *px, int offset, int *pxc) int pxspace = prefix_space(px); pxl = lsab_alloc(po, pxspace); memcpy(pxl, px, pxspace); + *pxl &= 0xFFFF0000; /* Set metric to zero */ (*pxc)++; } @@ -1415,11 +1427,21 @@ add_link_lsa(struct proto_ospf *po, struct top_hash_entry *en, int offset, int * u32 *pxb = ll->rest; int j; - for (j = 0; j < ll->pxcount; j++) - { - add_prefix(po, pxb, offset, pxc); - pxb = prefix_advance(pxb); - } + for (j = 0; j < ll->pxcount; pxb = prefix_advance(pxb), j++) + { + u8 pxlen = (pxb[0] >> 24); + u8 pxopts = (pxb[0] >> 16); + + /* Skip NU or LA prefixes */ + if (pxopts & (OPT_PX_NU | OPT_PX_LA)) + continue; + + /* Skip link-local prefixes */ + if ((pxlen >= 10) && ((pxb[1] & 0xffc00000) == 0xfe800000)) + continue; + + add_prefix(po, pxb, offset, pxc); + } } |