Initial revision
diff --git a/ospf6d/ospf6_intra.c b/ospf6d/ospf6_intra.c
new file mode 100644
index 0000000..b9c9ebd
--- /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 ();
+}
+
+