diff options
Diffstat (limited to 'ospf6d/ospf6_intra.c')
| -rw-r--r-- | ospf6d/ospf6_intra.c | 896 |
1 files changed, 896 insertions, 0 deletions
diff --git a/ospf6d/ospf6_intra.c b/ospf6d/ospf6_intra.c new file mode 100644 index 00000000..b9c9ebd0 --- /dev/null +++ b/ospf6d/ospf6_intra.c @@ -0,0 +1,896 @@ +/* + * Copyright (C) 2002 Yasuhiro Ohara + * + * This file is part of GNU Zebra. + * + * GNU Zebra is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2, or (at your option) any + * later version. + * + * GNU Zebra is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Zebra; see the file COPYING. If not, write to the + * Free Software Foundation, Inc., 59 Temple Place - Suite 330, + * Boston, MA 02111-1307, USA. + */ + +#include "ospf6d.h" + +static int intra_index; +#define IS_OSPF6_DUMP_INTRA (ospf6_dump_is_on (intra_index)) + +#define ADD 0 +#define REMOVE 1 + +static void +ospf6_intra_route_calculate (int type, struct ospf6_lsa *lsa, + struct ospf6_route_req *topo_entry) +{ + struct ospf6_intra_area_prefix_lsa *intra_prefix; + char *start, *end; + struct ospf6_prefix *ospf6_prefix; + struct ospf6_route_req request; + struct ospf6_area *area; + + if (IS_OSPF6_DUMP_INTRA) + { + char buf[64]; + struct prefix_ls *p_ls; + p_ls = (struct prefix_ls *) &topo_entry->route.prefix; + inet_ntop (AF_INET, &p_ls->adv_router, buf, sizeof (buf)); + zlog_info ("INTRA: Calculate [%s] %s and %s", + (type == ADD ? "add" : "remove"), lsa->str, buf); + } + + intra_prefix = OSPF6_LSA_HEADER_END (lsa->header); + + area = lsa->scope; + assert (area); + + start = (char *) (intra_prefix + 1); + end = (char *) lsa->header + ntohs (lsa->header->length); + for (ospf6_prefix = (struct ospf6_prefix *) start; + (char *) ospf6_prefix < end; + ospf6_prefix = OSPF6_NEXT_PREFIX (ospf6_prefix)) + { + memset (&request, 0, sizeof (request)); + + request.route.type = OSPF6_DEST_TYPE_NETWORK; + request.route.prefix.family = AF_INET6; + request.route.prefix.prefixlen = ospf6_prefix->prefix_length; + ospf6_prefix_in6_addr (ospf6_prefix, &request.route.prefix.u.prefix6); + + request.path.type = OSPF6_PATH_TYPE_INTRA; + request.path.area_id = area->area_id; + request.path.origin.type = lsa->header->type; + request.path.origin.id = lsa->header->id; + request.path.origin.adv_router = lsa->header->adv_router; + request.path.cost = topo_entry->path.cost + + ntohs (ospf6_prefix->prefix_metric); + request.path.capability[0] = topo_entry->path.capability[0]; + request.path.capability[1] = topo_entry->path.capability[1]; + request.path.capability[2] = topo_entry->path.capability[2]; + + memcpy (&request.nexthop.address, &topo_entry->nexthop.address, + sizeof (request.nexthop.address)); + request.nexthop.ifindex = topo_entry->nexthop.ifindex; + + if (type == ADD) + ospf6_route_add (&request, area->route_table); + else if (type == REMOVE) + ospf6_route_remove (&request, area->route_table); + else + assert (0); + } +} + +int +ospf6_intra_prefix_database_hook_remove (void *data) +{ + struct ospf6_lsa *lsa = data; + struct ospf6_area *area; + struct ospf6_intra_area_prefix_lsa *iap; + struct prefix_ls prefix_ls; + struct ospf6_route_req topo_entry; + + if (lsa->header->type != htons (OSPF6_LSA_TYPE_INTRA_PREFIX)) + return 0; + + area = (struct ospf6_area *) lsa->scope; + assert (area); + + if (IS_OSPF6_DUMP_INTRA) + zlog_info ("INTRA: area %s remove: %s", area->str, lsa->str); + + iap = OSPF6_LSA_HEADER_END (lsa->header); + memset (&prefix_ls, 0, sizeof (prefix_ls)); + prefix_ls.prefixlen = 64; + prefix_ls.adv_router.s_addr = iap->refer_advrtr; + prefix_ls.id.s_addr = iap->refer_lsid; + + if (iap->refer_lstype == htons (OSPF6_LSA_TYPE_ROUTER) && + iap->refer_lsid != htonl (0)) + { + zlog_warn ("SPF: Malformed ID %lu of Router reference in %s", + (u_long) ntohl (iap->refer_lsid), lsa->str); + prefix_ls.id.s_addr = htonl (0); + } + + ospf6_route_lookup (&topo_entry, (struct prefix *) &prefix_ls, + area->table_topology); + + while (iap->refer_lstype == topo_entry.path.origin.type && + iap->refer_lsid == topo_entry.path.origin.id && + iap->refer_advrtr == topo_entry.path.origin.adv_router) + { + ospf6_intra_route_calculate (REMOVE, lsa, &topo_entry); + ospf6_route_next (&topo_entry); + } + return 0; +} + +int +ospf6_intra_prefix_database_hook_add (void *data) +{ + struct ospf6_lsa *lsa = data; + struct ospf6_area *area; + struct ospf6_intra_area_prefix_lsa *iap; + struct prefix_ls prefix_ls; + struct ospf6_route_req topo_entry; + + if (lsa->header->type != htons (OSPF6_LSA_TYPE_INTRA_PREFIX)) + return 0; + + area = (struct ospf6_area *) lsa->scope; + assert (area); + + if (IS_LSA_MAXAGE (lsa)) + { + ospf6_intra_prefix_database_hook_remove (lsa); + return 0; + } + + if (IS_OSPF6_DUMP_INTRA) + zlog_info ("INTRA: area %s add: %s", area->str, lsa->str); + + iap = OSPF6_LSA_HEADER_END (lsa->header); + + memset (&prefix_ls, 0, sizeof (struct prefix_ls)); + prefix_ls.prefixlen = 64; + prefix_ls.adv_router.s_addr = iap->refer_advrtr; + prefix_ls.id.s_addr = iap->refer_lsid; + + if (iap->refer_lstype == htons (OSPF6_LSA_TYPE_ROUTER) && + iap->refer_lsid != htonl (0)) + { + zlog_warn ("INTRA: Malformed ID %lu of Router reference in %s", + (u_long) ntohl (iap->refer_lsid), lsa->str); + prefix_ls.id.s_addr = htonl (0); + } + + ospf6_route_lookup (&topo_entry, (struct prefix *) &prefix_ls, + area->table_topology); + + while (iap->refer_lstype == topo_entry.path.origin.type && + iap->refer_lsid == topo_entry.path.origin.id && + iap->refer_advrtr == topo_entry.path.origin.adv_router) + { + ospf6_intra_route_calculate (ADD, lsa, &topo_entry); + ospf6_route_next (&topo_entry); + } + return 0; +} + +void +ospf6_intra_topology_add (void *data) +{ + struct ospf6_route_req *topo_entry = data; + struct ospf6_area *area; + struct ospf6_intra_area_prefix_lsa *iap; + struct ospf6_lsdb_node node; + + area = ospf6_area_lookup (topo_entry->path.area_id, ospf6); + if (! area) + return; + + if (topo_entry->route.type == OSPF6_DEST_TYPE_ROUTER && + (CHECK_FLAG (topo_entry->path.router_bits, OSPF6_ROUTER_LSA_BIT_B) || + CHECK_FLAG (topo_entry->path.router_bits, OSPF6_ROUTER_LSA_BIT_E))) + ospf6_route_add (topo_entry, ospf6->topology_table); + + for (ospf6_lsdb_type (&node, htons (OSPF6_LSA_TYPE_INTRA_PREFIX), + area->lsdb); + ! ospf6_lsdb_is_end (&node); + ospf6_lsdb_next (&node)) + { + if (IS_LSA_MAXAGE (node.lsa)) + continue; + + iap = OSPF6_LSA_HEADER_END (node.lsa->header); + + if (iap->refer_lstype == htons (OSPF6_LSA_TYPE_ROUTER) && + iap->refer_lsid != htonl (0)) + { + zlog_warn ("INTRA: Malformed ID %lu of Router reference in %s", + (u_long) ntohl (iap->refer_lsid), node.lsa->str); + } + + if (iap->refer_lstype != topo_entry->path.origin.type || + iap->refer_lsid != topo_entry->path.origin.id || + iap->refer_advrtr != topo_entry->path.origin.adv_router) + continue; + + ospf6_intra_route_calculate (ADD, node.lsa, topo_entry); + } +} + +void +ospf6_intra_topology_remove (void *data) +{ + struct ospf6_route_req *topo_entry = data; + struct ospf6_area *area; + struct ospf6_intra_area_prefix_lsa *iap; + struct ospf6_lsdb_node node; + + area = ospf6_area_lookup (topo_entry->path.area_id, ospf6); + if (! area) + return; + + if (topo_entry->route.type == OSPF6_DEST_TYPE_ROUTER && + (CHECK_FLAG (topo_entry->path.router_bits, OSPF6_ROUTER_LSA_BIT_B) || + CHECK_FLAG (topo_entry->path.router_bits, OSPF6_ROUTER_LSA_BIT_E))) + ospf6_route_remove (topo_entry, ospf6->topology_table); + + for (ospf6_lsdb_type (&node, htons (OSPF6_LSA_TYPE_INTRA_PREFIX), + area->lsdb); + ! ospf6_lsdb_is_end (&node); + ospf6_lsdb_next (&node)) + { + if (IS_LSA_MAXAGE (node.lsa)) + continue; + + iap = OSPF6_LSA_HEADER_END (node.lsa->header); + + if (iap->refer_lstype == htons (OSPF6_LSA_TYPE_ROUTER) && + iap->refer_lsid != htonl (0)) + zlog_warn ("SPF: Malformed ID %lu of Router reference in %s", + (u_long) ntohl (iap->refer_lsid), node.lsa->str); + + if (iap->refer_lstype != topo_entry->path.origin.type || + iap->refer_lsid != topo_entry->path.origin.id || + iap->refer_advrtr != topo_entry->path.origin.adv_router) + continue; + + ospf6_intra_route_calculate (REMOVE, node.lsa, topo_entry); + } +} + + +/*****************************************/ +/* RFC2740 3.4.3.7 Intra-Area-Prefix-LSA */ +/*****************************************/ + +#define CONTINUE_IF_ADDRESS_LINKLOCAL(addr)\ + if (IN6_IS_ADDR_LINKLOCAL (&(addr)->u.prefix6))\ + {\ + char buf[64];\ + prefix2str (addr, buf, sizeof (buf));\ + if (IS_OSPF6_DUMP_PREFIX)\ + zlog_info (" Filter out Linklocal: %s", buf);\ + continue;\ + } + +#define CONTINUE_IF_ADDRESS_UNSPECIFIED(addr)\ + if (IN6_IS_ADDR_UNSPECIFIED (&(addr)->u.prefix6))\ + {\ + char buf[64];\ + prefix2str (addr, buf, sizeof (buf));\ + if (IS_OSPF6_DUMP_PREFIX)\ + zlog_info (" Filter out Unspecified: %s", buf);\ + continue;\ + } + +#define CONTINUE_IF_ADDRESS_LOOPBACK(addr)\ + if (IN6_IS_ADDR_LOOPBACK (&(addr)->u.prefix6))\ + {\ + char buf[64];\ + prefix2str (addr, buf, sizeof (buf));\ + if (IS_OSPF6_DUMP_PREFIX)\ + zlog_info (" Filter out Loopback: %s", buf);\ + continue;\ + } + +#define CONTINUE_IF_ADDRESS_V4COMPAT(addr)\ + if (IN6_IS_ADDR_V4COMPAT (&(addr)->u.prefix6))\ + {\ + char buf[64];\ + prefix2str (addr, buf, sizeof (buf));\ + if (IS_OSPF6_DUMP_PREFIX)\ + zlog_info (" Filter out V4Compat: %s", buf);\ + continue;\ + } + +#define CONTINUE_IF_ADDRESS_V4MAPPED(addr)\ + if (IN6_IS_ADDR_V4MAPPED (&(addr)->u.prefix6))\ + {\ + char buf[64];\ + prefix2str (addr, buf, sizeof (buf));\ + if (IS_OSPF6_DUMP_PREFIX)\ + zlog_info (" Filter out V4Mapped: %s", buf);\ + continue;\ + } + + +int +ospf6_lsa_intra_prefix_show (struct vty *vty, struct ospf6_lsa *lsa) +{ + struct ospf6_intra_area_prefix_lsa *iap_lsa; + struct ospf6_prefix *prefix; + unsigned short prefixnum; + char buf[128], type[32], id[32], adv_router[32]; + struct in6_addr in6; + char *start, *end, *current; + + assert (lsa->header); + iap_lsa = (struct ospf6_intra_area_prefix_lsa *) (lsa->header + 1); + + prefixnum = ntohs (iap_lsa->prefix_number); + ospf6_lsa_type_string (iap_lsa->refer_lstype, type, sizeof (type)); + inet_ntop (AF_INET, &iap_lsa->refer_lsid, id, sizeof (id)); + inet_ntop (AF_INET, &iap_lsa->refer_advrtr, adv_router, + sizeof (adv_router)); + + vty_out (vty, " Number of Prefix: %d%s", prefixnum, VTY_NEWLINE); + vty_out (vty, " Referenced LS Type: %s%s", type, VTY_NEWLINE); + vty_out (vty, " Referenced LS ID: %s%s", id, VTY_NEWLINE); + vty_out (vty, " Referenced Advertising Router: %s%s", adv_router, + VTY_NEWLINE); + + start = (char *) lsa->header + sizeof (struct ospf6_lsa_header) + + sizeof (struct ospf6_intra_area_prefix_lsa); + end = (char *) lsa->header + ntohs (lsa->header->length); + + for (current = start; current < end; current += OSPF6_PREFIX_SIZE (prefix)) + { + prefix = (struct ospf6_prefix *) current; + if (current + OSPF6_PREFIX_SIZE (prefix) > end) + { + vty_out (vty, " Trailing %d byte garbage ... Malformed%s", + end - current, VTY_NEWLINE); + return -1; + } + + ospf6_prefix_options_str (prefix->prefix_options, buf, sizeof (buf)); + vty_out (vty, " Prefix Options: %s%s", buf, VTY_NEWLINE); + + ospf6_prefix_in6_addr (prefix, &in6); + inet_ntop (AF_INET6, &in6, buf, sizeof (buf)); + vty_out (vty, " Prefix: %s/%d%s", + buf, prefix->prefix_length, VTY_NEWLINE); + } + + return 0; +} + +void +ospf6_lsa_intra_prefix_update_transit (char *ifname) +{ + char buffer [MAXLSASIZE]; + u_int16_t size; + struct ospf6_lsa *old; + struct interface *ifp; + struct ospf6_interface *o6i; + struct ospf6_neighbor *o6n; + + struct ospf6_intra_area_prefix_lsa *iap; + struct ospf6_lsdb_node n; + listnode node; + char *start, *end, *current; + struct ospf6_prefix *prefix, *dup, *src, *dst; + struct ospf6_link_lsa *link; + char buf[128]; + int count, prefix_num; + + list adv_list; + + ifp = if_lookup_by_name (ifname); + if (! ifp) + { + zlog_warn ("Update Intra-Prefix (Transit): No such Interface: %s", + ifname); + return; + } + + o6i = (struct ospf6_interface *) ifp->info; + if (! o6i || ! o6i->area) + { + zlog_warn ("Update Intra-Prefix (Transit): Interface not enabled: %s", + ifname); + return; + } + + /* find previous LSA */ + old = ospf6_lsdb_lookup (htons (OSPF6_LSA_TYPE_INTRA_PREFIX), + htonl (o6i->if_id), ospf6->router_id, + o6i->area); + + /* Don't originate Network-LSA if not DR */ + if (o6i->state != IFS_DR) + { + if (old) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info ("Update Intra-Prefix (Transit): %s not DR", + o6i->interface->name); + ospf6_lsa_premature_aging (old); + } + return; + } + + /* If none of neighbor is adjacent to us */ + count = 0; + o6i->foreach_nei (o6i, &count, NBS_FULL, ospf6_count_state); + if (count == 0) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info ("Update Intra-Prefix (Transit): %s is Stub", + o6i->interface->name); + if (old) + ospf6_lsa_premature_aging (old); + return; + } + + if (IS_OSPF6_DUMP_PREFIX) + zlog_info ("Update Intra-Prefix (Transit): Interface %s", + o6i->interface->name); + + adv_list = list_new (); + + /* foreach Link-LSA associated with this Link */ + for (ospf6_lsdb_type (&n, htons (OSPF6_LSA_TYPE_LINK), o6i->lsdb); + ! ospf6_lsdb_is_end (&n); ospf6_lsdb_next (&n)) + { + if (IS_LSA_MAXAGE (n.lsa)) + continue; + + if (IS_OSPF6_DUMP_PREFIX) + zlog_info ("Update Intra-Prefix (Transit): Checking %s", + n.lsa->str); + + /* Check status of the advertising router */ + if (n.lsa->header->adv_router != o6i->area->ospf6->router_id) + { + o6n = ospf6_neighbor_lookup (n.lsa->header->adv_router, o6i); + if (! o6n) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info ("Update Intra-Prefix (Transit): neighbor not found"); + continue; + } + + if (o6n->state != NBS_FULL) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info ("Update Intra-Prefix (Transit): %s not FULL", + o6n->str); + continue; + } + } + + /* For each Prefix in this Link-LSA */ + link = (struct ospf6_link_lsa *) (n.lsa->header + 1); + prefix_num = ntohl (link->llsa_prefix_num); + + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" Prefix #%d", prefix_num); + + start = (char *) (link + 1); + end = (char *) (n.lsa->header) + ntohs (n.lsa->header->length); + prefix = (struct ospf6_prefix *) start; + for (current = start; current < end; + current += OSPF6_PREFIX_SIZE (prefix)) + { + prefix = (struct ospf6_prefix *) current; + ospf6_prefix_string (prefix, buf, sizeof (buf)); + + /* Check duplicate prefix */ + dup = ospf6_prefix_lookup (adv_list, prefix); + if (dup) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" Duplicate %s", buf); + dup->prefix_options |= prefix->prefix_options; + continue; + } + + if (prefix_num <= 0) + { + zlog_warn (" Wong prefix number ..."); + break; + } + + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" Prefix %s", buf); + + /* copy prefix to advertise list */ + ospf6_prefix_add (adv_list, prefix); + + prefix_num --; + } + } + + /* if no prefix to advertise, return */ + if (listcount (adv_list) == 0) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" No Prefix to advertise"); + if (old) + ospf6_lsa_premature_aging (old); + return; + } + + /* prepare buffer */ + memset (buffer, 0, sizeof (buffer)); + size = sizeof (struct ospf6_intra_area_prefix_lsa); + iap = (struct ospf6_intra_area_prefix_lsa *) buffer; + + /* Set Referenced LSA field */ + iap->refer_lstype = htons (OSPF6_LSA_TYPE_NETWORK); + iap->refer_lsid = htonl (o6i->if_id); + iap->refer_advrtr = o6i->area->ospf6->router_id; + + dst = (struct ospf6_prefix *) (iap + 1); + for (node = listhead (adv_list); node; nextnode (node)) + { + src = (struct ospf6_prefix *) getdata (node); + + memcpy (dst, src, OSPF6_PREFIX_SIZE (src)); + + size += OSPF6_PREFIX_SIZE (dst); + dst = OSPF6_NEXT_PREFIX (dst); + } + iap->prefix_number = htons (listcount (adv_list)); + + while ((node = listhead (adv_list)) != NULL) + { + prefix = getdata (node); + ospf6_prefix_delete (prefix); + listnode_delete (adv_list, prefix); + } + list_delete (adv_list); + + ospf6_lsa_originate (htons (OSPF6_LSA_TYPE_INTRA_PREFIX), + htonl (o6i->if_id), ospf6->router_id, + buffer, size, o6i->area); +} + +void +ospf6_lsa_intra_prefix_update_stub (u_int32_t area_id) +{ + char buffer [MAXLSASIZE]; + u_int16_t size; + struct ospf6_lsa *old; + struct ospf6_area *o6a; + int count; + + struct ospf6_intra_area_prefix_lsa *iap; + listnode i,j; + struct ospf6_interface *o6i = NULL; + struct ospf6_prefix *prefix, *dst, *src; + struct connected *c; + char buf[128]; + + list adv_list; + listnode node; + char prefix_buf[sizeof (struct ospf6_prefix) + sizeof (struct in6_addr)]; + + o6a = ospf6_area_lookup (area_id, ospf6); + if (! o6a) + { + char tmp[16]; + inet_ntop (AF_INET, &area_id, tmp, sizeof (tmp)); + zlog_warn ("Update Intra-Prefix (Stub): No such area: %s", tmp); + return; + } + else if (IS_OSPF6_DUMP_PREFIX) + { + zlog_info ("Update Intra-Prefix (Stub): area: %s", o6a->str); + } + + /* find previous LSA */ + old = ospf6_lsdb_lookup (htons (OSPF6_LSA_TYPE_INTRA_PREFIX), + htonl (0), ospf6->router_id, + o6a); /* xxx, ls-id */ + + adv_list = list_new (); + + /* Examin for each interface */ + for (i = listhead (o6a->if_list); i; nextnode (i)) + { + o6i = (struct ospf6_interface *) getdata (i); + + if (o6i->state == IFS_DOWN) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" Interface %s: down", o6i->interface->name); + continue; + } + + count = 0; + o6i->foreach_nei (o6i, &count, NBS_FULL, ospf6_count_state); + if (o6i->state != IFS_LOOPBACK && o6i->state != IFS_PTOP && + count != 0) + { + /* This interface's prefix will be included in DR's */ + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" Interface %s: not stub", o6i->interface->name); + continue; + } + + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" Interface %s:", o6i->interface->name); + + /* copy foreach address prefix */ + for (j = listhead (o6i->interface->connected); j; nextnode (j)) + { + c = (struct connected *) getdata (j); + + /* filter prefix not IPv6 */ + if (c->address->family != AF_INET6) + continue; + + /* for log */ + prefix2str (c->address, buf, sizeof (buf)); + + CONTINUE_IF_ADDRESS_LINKLOCAL (c->address); + CONTINUE_IF_ADDRESS_UNSPECIFIED (c->address); + CONTINUE_IF_ADDRESS_LOOPBACK (c->address); + CONTINUE_IF_ADDRESS_V4COMPAT (c->address); + CONTINUE_IF_ADDRESS_V4MAPPED (c->address); + + /* filter prefix specified by configuration */ + if (o6i->plist_name) + { + struct prefix_list *plist; + enum prefix_list_type result = PREFIX_PERMIT; + + plist = prefix_list_lookup (AFI_IP6, o6i->plist_name); + if (plist) + result = prefix_list_apply (plist, c->address); + else + zlog_warn ("Update Intra-Prefix (Stub): " + "Prefix list \"%s\" not found", + o6i->plist_name); + + if (result == PREFIX_DENY) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" %s: Filtered by %s", + buf, o6i->plist_name); + continue; + } + } + + /* initialize buffer for ospf6 prefix */ + memset (prefix_buf, 0, sizeof (prefix_buf)); + prefix = (struct ospf6_prefix *) prefix_buf; + + /* set ospf6 prefix according to its state */ + /* xxx, virtual links */ + if (! CHECK_FLAG (o6i->flag, OSPF6_INTERFACE_FLAG_FORCE_PREFIX) && + (o6i->state == IFS_LOOPBACK || o6i->state == IFS_PTOP + /* xxx, PoinToMultiPoint I/F type */ )) + { + prefix->prefix_length = 128; + prefix->prefix_options = OSPF6_PREFIX_OPTION_LA; + prefix->prefix_metric = htons (0); + memcpy (prefix + 1, &c->address->u.prefix6, + OSPF6_PREFIX_SPACE (prefix->prefix_length)); + } + else + { + struct prefix_ipv6 prefix_ipv6; + /* apply mask */ + prefix_copy ((struct prefix *) &prefix_ipv6, c->address); + apply_mask_ipv6 (&prefix_ipv6); + + prefix->prefix_length = prefix_ipv6.prefixlen; + prefix->prefix_options = 0; /* xxx, no options yet */ + prefix->prefix_metric = htons (o6i->cost); + memcpy (prefix + 1, &prefix_ipv6.prefix, + OSPF6_PREFIX_SPACE (prefix->prefix_length)); + } + + ospf6_prefix_string (prefix, buf, sizeof (buf)); + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" Advertise %s", buf); + + /* check in the prefix to advertising prefix list */ + ospf6_prefix_add (adv_list, prefix); + } + } + + /* If no prefix to advertise */ + if (listcount (adv_list) == 0) + { + if (IS_OSPF6_DUMP_PREFIX) + zlog_info (" No prefix to advertise"); + if (old) + ospf6_lsa_premature_aging (old); + return; + } + + /* prepare buffer */ + memset (buffer, 0, sizeof (buffer)); + size = sizeof (struct ospf6_intra_area_prefix_lsa); + iap = (struct ospf6_intra_area_prefix_lsa *) buffer; + + /* Set Referenced LSA field */ + iap->refer_lstype = htons (OSPF6_LSA_TYPE_ROUTER); + iap->refer_lsid = htonl (0); + iap->refer_advrtr = o6a->ospf6->router_id; + + dst = (struct ospf6_prefix *) (iap + 1); + for (node = listhead (adv_list); node; nextnode (node)) + { + src = (struct ospf6_prefix *) getdata (node); + + memcpy (dst, src, OSPF6_PREFIX_SIZE (src)); + + size += OSPF6_PREFIX_SIZE (dst); + dst = OSPF6_NEXT_PREFIX (dst); + } + iap->prefix_number = htons (listcount (adv_list)); + + while ((node = listhead (adv_list)) != NULL) + { + prefix = getdata (node); + ospf6_prefix_delete (prefix); + listnode_delete (adv_list, prefix); + } + list_delete (adv_list); + + ospf6_lsa_originate (htons (OSPF6_LSA_TYPE_INTRA_PREFIX), + htonl (0) /* xxx */, ospf6->router_id, + buffer, size, o6a); +} + +int +ospf6_lsa_intra_prefix_hook_interface (void *interface) +{ + struct ospf6_interface *o6i = interface; + if (o6i->area) + { + ospf6_lsa_intra_prefix_update_transit (o6i->interface->name); + ospf6_lsa_intra_prefix_update_stub (o6i->area->area_id); + } + return 0; +} + +int +ospf6_lsa_intra_prefix_hook_neighbor (void *neighbor) +{ + struct ospf6_neighbor *o6n = neighbor; + if (o6n->ospf6_interface->area) + { + ospf6_lsa_intra_prefix_update_transit (o6n->ospf6_interface->interface->name); + ospf6_lsa_intra_prefix_update_stub (o6n->ospf6_interface->area->area_id); + } + return 0; +} + +int +ospf6_intra_prefix_link_database_hook (void *new) +{ + struct ospf6_lsa *lsa = new; + struct ospf6_interface *o6i; + + if (lsa->header->type != htons (OSPF6_LSA_TYPE_LINK)) + return 0; + + o6i = lsa->scope; + if (o6i->state != IFS_DR) + return 0; + + ospf6_lsa_intra_prefix_update_transit (o6i->interface->name); + ospf6_lsa_intra_prefix_update_stub (o6i->area->area_id); + return 0; +} + +int +ospf6_lsa_intra_prefix_refresh (void *old) +{ + struct ospf6_lsa *lsa = old; + struct ospf6_interface *o6i; + struct ospf6_area *o6a; + u_int32_t id; + + id = ntohl (lsa->header->id); + if (id) + { + o6i = ospf6_interface_lookup_by_index (id); + if (o6i) + ospf6_lsa_intra_prefix_update_transit (o6i->interface->name); + else + ospf6_lsa_premature_aging (lsa); + } + else + { + o6a = lsa->scope; + ospf6_lsa_intra_prefix_update_stub (o6a->area_id); + } + + return 0; +} + +void +ospf6_intra_prefix_register () +{ + struct ospf6_lsa_slot slot, *sp; + struct ospf6_hook hook; + + memset (&slot, 0, sizeof (struct ospf6_lsa_slot)); + slot.type = htons (OSPF6_LSA_TYPE_INTRA_PREFIX); + slot.name = "Intra-Prefix"; + slot.func_show = ospf6_lsa_intra_prefix_show; + slot.func_refresh = ospf6_lsa_intra_prefix_refresh; + ospf6_lsa_slot_register (&slot); + + memset (&hook, 0, sizeof (hook)); + hook.name = "OriginateIntraPrefix"; + hook.hook_add = ospf6_lsa_intra_prefix_hook_interface; + hook.hook_change = ospf6_lsa_intra_prefix_hook_interface; + hook.hook_remove = NULL; /* XXX */ + ospf6_hook_register (&hook, &interface_hook); + + memset (&hook, 0, sizeof (hook)); + hook.name = "OriginateIntraPrefix"; + hook.hook_add = ospf6_lsa_intra_prefix_hook_neighbor; + hook.hook_change = ospf6_lsa_intra_prefix_hook_neighbor; + hook.hook_remove = ospf6_lsa_intra_prefix_hook_neighbor; + ospf6_hook_register (&hook, &neighbor_hook); + + sp = ospf6_lsa_slot_get (htons (OSPF6_LSA_TYPE_INTRA_PREFIX)); + hook.name = "CalculateIntraPrefix"; + hook.hook_add = ospf6_intra_prefix_database_hook_add; + hook.hook_change = ospf6_intra_prefix_database_hook_add; + hook.hook_remove = ospf6_intra_prefix_database_hook_remove; + ospf6_hook_register (&hook, &sp->database_hook); +} + +void +ospf6_intra_database_hook_intra_prefix (struct ospf6_lsa *old, + struct ospf6_lsa *new) +{ + if (old) + ospf6_intra_prefix_database_hook_remove (old); + if (new && ! IS_LSA_MAXAGE (new)) + ospf6_intra_prefix_database_hook_add (new); +} + +void +ospf6_intra_database_hook_link (struct ospf6_lsa *old, + struct ospf6_lsa *new) +{ + ospf6_intra_prefix_link_database_hook (new); + ospf6_spf_database_hook (old, new); +} + +void +ospf6_intra_init () +{ + ospf6_lsdb_hook[OSPF6_LSA_TYPE_INTRA_PREFIX & OSPF6_LSTYPE_CODE_MASK].hook = + ospf6_intra_database_hook_intra_prefix; + ospf6_lsdb_hook[OSPF6_LSA_TYPE_LINK & OSPF6_LSTYPE_CODE_MASK].hook = + ospf6_intra_database_hook_link; + + intra_index = ospf6_dump_install ("intra-area", "Intra-area calculation\n"); + ospf6_intra_prefix_register (); +} + + |