ospf_opaque.c
上传用户:xiaozhuqw
上传日期:2009-11-15
资源大小:1338k
文件大小:70k
- /*
- * This is an implementation of rfc2370.
- * Copyright (C) 2001 KDD R&D Laboratories, Inc.
- * http://www.kddlabs.co.jp/
- *
- * 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.
- */
- /***** MTYPE definitions are not reflected to "memory.h" yet. *****/
- #define MTYPE_OSPF_OPAQUE_FUNCTAB 0
- #define MTYPE_OPAQUE_INFO_PER_TYPE 0
- #define MTYPE_OPAQUE_INFO_PER_ID 0
- #include <zebra.h>
- #ifdef HAVE_OPAQUE_LSA
- #include "linklist.h"
- #include "prefix.h"
- #include "if.h"
- #include "table.h"
- #include "memory.h"
- #include "command.h"
- #include "vty.h"
- #include "stream.h"
- #include "log.h"
- #include "thread.h"
- #include "hash.h"
- #include "sockunion.h" /* for inet_aton() */
- #include "ospfd/ospfd.h"
- #include "ospfd/ospf_interface.h"
- #include "ospfd/ospf_ism.h"
- #include "ospfd/ospf_asbr.h"
- #include "ospfd/ospf_lsa.h"
- #include "ospfd/ospf_lsdb.h"
- #include "ospfd/ospf_neighbor.h"
- #include "ospfd/ospf_nsm.h"
- #include "ospfd/ospf_flood.h"
- #include "ospfd/ospf_packet.h"
- #include "ospfd/ospf_spf.h"
- #include "ospfd/ospf_dump.h"
- #include "ospfd/ospf_route.h"
- #include "ospfd/ospf_ase.h"
- #include "ospfd/ospf_zebra.h"
- /*------------------------------------------------------------------------*
- * Followings are initialize/terminate functions for Opaque-LSAs handling.
- *------------------------------------------------------------------------*/
- #ifdef HAVE_OSPF_TE
- #include "ospfd/ospf_te.h"
- #endif /* HAVE_OSPF_TE */
- static void ospf_opaque_register_vty (void);
- static void ospf_opaque_funclist_init (void);
- static void ospf_opaque_funclist_term (void);
- static void free_opaque_info_per_type (void *val);
- static void free_opaque_info_per_id (void *val);
- static int ospf_opaque_lsa_install_hook (struct ospf_lsa *lsa);
- static int ospf_opaque_lsa_delete_hook (struct ospf_lsa *lsa);
- void
- ospf_opaque_init (void)
- {
- ospf_opaque_register_vty ();
- ospf_opaque_funclist_init ();
- #ifdef HAVE_OSPF_TE
- if (ospf_mpls_te_init () != 0)
- exit (1);
- #endif /* HAVE_OSPF_TE */
- return;
- }
- void
- ospf_opaque_term (void)
- {
- #ifdef HAVE_OSPF_TE
- ospf_mpls_te_term ();
- #endif /* HAVE_OSPF_TE */
- ospf_opaque_funclist_term ();
- return;
- }
- int
- ospf_opaque_type9_lsa_init (struct ospf_interface *oi)
- {
- if (oi->opaque_lsa_self != NULL)
- list_delete (oi->opaque_lsa_self);
- oi->opaque_lsa_self = list_new ();
- oi->opaque_lsa_self->del = free_opaque_info_per_type;
- oi->t_opaque_lsa_self = NULL;
- return 0;
- }
- void
- ospf_opaque_type9_lsa_term (struct ospf_interface *oi)
- {
- OSPF_TIMER_OFF (oi->t_opaque_lsa_self);
- if (oi->opaque_lsa_self != NULL)
- list_delete (oi->opaque_lsa_self);
- oi->opaque_lsa_self = NULL;
- return;
- }
- int
- ospf_opaque_type10_lsa_init (struct ospf_area *area)
- {
- if (area->opaque_lsa_self != NULL)
- list_delete (area->opaque_lsa_self);
- area->opaque_lsa_self = list_new ();
- area->opaque_lsa_self->del = free_opaque_info_per_type;
- area->t_opaque_lsa_self = NULL;
- #ifdef MONITOR_LSDB_CHANGE
- area->lsdb->new_lsa_hook = ospf_opaque_lsa_install_hook;
- area->lsdb->del_lsa_hook = ospf_opaque_lsa_delete_hook;
- #endif /* MONITOR_LSDB_CHANGE */
- return 0;
- }
- void
- ospf_opaque_type10_lsa_term (struct ospf_area *area)
- {
- #ifdef MONITOR_LSDB_CHANGE
- area->lsdb->new_lsa_hook =
- area->lsdb->del_lsa_hook = NULL;
- #endif /* MONITOR_LSDB_CHANGE */
- OSPF_TIMER_OFF (area->t_opaque_lsa_self);
- if (area->opaque_lsa_self != NULL)
- list_delete (area->opaque_lsa_self);
- area->opaque_lsa_self = NULL;
- return;
- }
- int
- ospf_opaque_type11_lsa_init (struct ospf *top)
- {
- if (top->opaque_lsa_self != NULL)
- list_delete (top->opaque_lsa_self);
- top->opaque_lsa_self = list_new ();
- top->opaque_lsa_self->del = free_opaque_info_per_type;
- top->t_opaque_lsa_self = NULL;
- #ifdef MONITOR_LSDB_CHANGE
- top->lsdb->new_lsa_hook = ospf_opaque_lsa_install_hook;
- top->lsdb->del_lsa_hook = ospf_opaque_lsa_delete_hook;
- #endif /* MONITOR_LSDB_CHANGE */
- return 0;
- }
- void
- ospf_opaque_type11_lsa_term (struct ospf *top)
- {
- #ifdef MONITOR_LSDB_CHANGE
- top->lsdb->new_lsa_hook =
- top->lsdb->del_lsa_hook = NULL;
- #endif /* MONITOR_LSDB_CHANGE */
- OSPF_TIMER_OFF (top->t_opaque_lsa_self);
- if (top->opaque_lsa_self != NULL)
- list_delete (top->opaque_lsa_self);
- top->opaque_lsa_self = NULL;
- return;
- }
- static const char *
- ospf_opaque_type_name (u_char opaque_type)
- {
- const char *name = "Unknown";
- switch (opaque_type)
- {
- case OPAQUE_TYPE_WILDCARD: /* This is a special assignment! */
- name = "Wildcard";
- break;
- case OPAQUE_TYPE_TRAFFIC_ENGINEERING_LSA:
- name = "Traffic Engineering LSA";
- break;
- case OPAQUE_TYPE_SYCAMORE_OPTICAL_TOPOLOGY_DESC:
- name = "Sycamore optical topology description";
- break;
- case OPAQUE_TYPE_GRACE_LSA:
- name = "Grace-LSA";
- break;
- default:
- if (OPAQUE_TYPE_RANGE_UNASSIGNED (opaque_type))
- name = "Unassigned";
- else if (OPAQUE_TYPE_RANGE_RESERVED (opaque_type))
- name = "Private/Experimental";
- break;
- }
- return name;
- }
- /*------------------------------------------------------------------------*
- * Followings are management functions to store user specified callbacks.
- *------------------------------------------------------------------------*/
- struct opaque_info_per_type; /* Forward declaration. */
- struct ospf_opaque_functab
- {
- u_char opaque_type;
- struct opaque_info_per_type *oipt;
- int (* new_if_hook)(struct interface *ifp);
- int (* del_if_hook)(struct interface *ifp);
- void (* ism_change_hook)(struct ospf_interface *oi, int old_status);
- void (* nsm_change_hook)(struct ospf_neighbor *nbr, int old_status);
- void (* config_write_router)(struct vty *vty);
- void (* config_write_if )(struct vty *vty, struct interface *ifp);
- void (* config_write_debug )(struct vty *vty);
- void (* show_opaque_info )(struct vty *vty, struct ospf_lsa *lsa);
- int (* lsa_originator)(void *arg);
- void (* lsa_refresher )(struct ospf_lsa *lsa);
- int (* new_lsa_hook)(struct ospf_lsa *lsa);
- int (* del_lsa_hook)(struct ospf_lsa *lsa);
- };
- static list ospf_opaque_wildcard_funclist; /* Handle LSA-9/10/11 altogether. */
- static list ospf_opaque_type9_funclist;
- static list ospf_opaque_type10_funclist;
- static list ospf_opaque_type11_funclist;
- static void
- ospf_opaque_del_functab (void *val)
- {
- XFREE (MTYPE_OSPF_OPAQUE_FUNCTAB, val);
- return;
- }
- static void
- ospf_opaque_funclist_init (void)
- {
- list funclist;
- funclist = ospf_opaque_wildcard_funclist = list_new ();
- funclist->del = ospf_opaque_del_functab;
- funclist = ospf_opaque_type9_funclist = list_new ();
- funclist->del = ospf_opaque_del_functab;
- funclist = ospf_opaque_type10_funclist = list_new ();
- funclist->del = ospf_opaque_del_functab;
- funclist = ospf_opaque_type11_funclist = list_new ();
- funclist->del = ospf_opaque_del_functab;
- return;
- }
- static void
- ospf_opaque_funclist_term (void)
- {
- list funclist;
- funclist = ospf_opaque_wildcard_funclist;
- list_delete (funclist);
- funclist = ospf_opaque_type9_funclist;
- list_delete (funclist);
- funclist = ospf_opaque_type10_funclist;
- list_delete (funclist);
- funclist = ospf_opaque_type11_funclist;
- list_delete (funclist);
- return;
- }
- static list
- ospf_get_opaque_funclist (u_char lsa_type)
- {
- list funclist = NULL;
- switch (lsa_type)
- {
- case OPAQUE_TYPE_WILDCARD:
- /* XXX
- * This is an ugly trick to handle type-9/10/11 LSA altogether.
- * Yes, "OPAQUE_TYPE_WILDCARD (value 0)" is not an LSA-type, nor
- * an officially assigned opaque-type.
- * Though it is possible that the value might be officially used
- * in the future, we use it internally as a special label, for now.
- */
- funclist = ospf_opaque_wildcard_funclist;
- break;
- case OSPF_OPAQUE_LINK_LSA:
- funclist = ospf_opaque_type9_funclist;
- break;
- case OSPF_OPAQUE_AREA_LSA:
- funclist = ospf_opaque_type10_funclist;
- break;
- case OSPF_OPAQUE_AS_LSA:
- funclist = ospf_opaque_type11_funclist;
- break;
- default:
- zlog_warn ("ospf_get_opaque_funclist: Unexpected LSA-type(%u)", lsa_type);
- break;
- }
- return funclist;
- }
- int
- ospf_register_opaque_functab (
- u_char lsa_type,
- u_char opaque_type,
- int (* new_if_hook)(struct interface *ifp),
- int (* del_if_hook)(struct interface *ifp),
- void (* ism_change_hook)(struct ospf_interface *oi, int old_status),
- void (* nsm_change_hook)(struct ospf_neighbor *nbr, int old_status),
- void (* config_write_router)(struct vty *vty),
- void (* config_write_if )(struct vty *vty, struct interface *ifp),
- void (* config_write_debug )(struct vty *vty),
- void (* show_opaque_info )(struct vty *vty, struct ospf_lsa *lsa),
- int (* lsa_originator)(void *arg),
- void (* lsa_refresher )(struct ospf_lsa *lsa),
- int (* new_lsa_hook)(struct ospf_lsa *lsa),
- int (* del_lsa_hook)(struct ospf_lsa *lsa))
- {
- list funclist;
- struct ospf_opaque_functab *new;
- int rc = -1;
- if ((funclist = ospf_get_opaque_funclist (lsa_type)) == NULL)
- {
- zlog_warn ("ospf_register_opaque_functab: Cannot get funclist for Type-%u LSAs?", lsa_type);
- goto out;
- }
- else
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->opaque_type == opaque_type)
- {
- zlog_warn ("ospf_register_opaque_functab: Duplicated entry?: lsa_type(%u), opaque_type(%u)", lsa_type, opaque_type);
- goto out;
- }
- }
- if ((new = XCALLOC (MTYPE_OSPF_OPAQUE_FUNCTAB,
- sizeof (struct ospf_opaque_functab))) == NULL)
- {
- zlog_warn ("ospf_register_opaque_functab: XMALLOC: %s", strerror (errno));
- goto out;
- }
- new->opaque_type = opaque_type;
- new->oipt = NULL;
- new->new_if_hook = new_if_hook;
- new->del_if_hook = del_if_hook;
- new->ism_change_hook = ism_change_hook;
- new->nsm_change_hook = nsm_change_hook;
- new->config_write_router = config_write_router;
- new->config_write_if = config_write_if;
- new->config_write_debug = config_write_debug;
- new->show_opaque_info = show_opaque_info;
- new->lsa_originator = lsa_originator;
- new->lsa_refresher = lsa_refresher;
- new->new_lsa_hook = new_lsa_hook;
- new->del_lsa_hook = del_lsa_hook;
- listnode_add (funclist, new);
- rc = 0;
- out:
- return rc;
- }
- void
- ospf_delete_opaque_functab (u_char lsa_type, u_char opaque_type)
- {
- list funclist;
- listnode node;
- struct ospf_opaque_functab *functab;
- if ((funclist = ospf_get_opaque_funclist (lsa_type)) != NULL)
- for (node = listhead (funclist); node; nextnode (node))
- {
- if ((functab = getdata (node)) != NULL
- && functab->opaque_type == opaque_type)
- {
- /* Cleanup internal control information, if it still remains. */
- if (functab->oipt != NULL)
- free_opaque_info_per_type (functab->oipt);
- /* Dequeue listnode entry from the list. */
- listnode_delete (funclist, functab);
- /* Avoid misjudgement in the next lookup. */
- if (listcount (funclist) == 0)
- funclist->head = funclist->tail = NULL;
- XFREE (MTYPE_OSPF_OPAQUE_FUNCTAB, functab);
- goto out;
- }
- }
- out:
- return;
- }
- static struct ospf_opaque_functab *
- ospf_opaque_functab_lookup (struct ospf_lsa *lsa)
- {
- list funclist;
- listnode node;
- struct ospf_opaque_functab *functab;
- u_char key = GET_OPAQUE_TYPE (ntohl (lsa->data->id.s_addr));
- if ((funclist = ospf_get_opaque_funclist (lsa->data->type)) != NULL)
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->opaque_type == key)
- return functab;
- return NULL;
- }
- /*------------------------------------------------------------------------*
- * Followings are management functions for self-originated LSA entries.
- *------------------------------------------------------------------------*/
- /*
- * Opaque-LSA control information per opaque-type.
- * Single Opaque-Type may have multiple instances; each of them will be
- * identified by their opaque-id.
- */
- struct opaque_info_per_type
- {
- u_char lsa_type;
- u_char opaque_type;
- enum { PROC_NORMAL, PROC_SUSPEND } status;
- /*
- * Thread for (re-)origination scheduling for this opaque-type.
- *
- * Initial origination of Opaque-LSAs is controlled by generic
- * Opaque-LSA handling module so that same opaque-type entries are
- * called all at once when certain conditions are met.
- * However, there might be cases that some Opaque-LSA clients need
- * to (re-)originate their own Opaque-LSAs out-of-sync with others.
- * This thread is prepared for that specific purpose.
- */
- struct thread *t_opaque_lsa_self;
- /*
- * Backpointer to an "owner" which is LSA-type dependent.
- * type-9: struct ospf_interface
- * type-10: struct ospf_area
- * type-11: struct ospf
- */
- void *owner;
- /* Collection of callback functions for this opaque-type. */
- struct ospf_opaque_functab *functab;
- /* List of Opaque-LSA control informations per opaque-id. */
- list id_list;
- };
- /* Opaque-LSA control information per opaque-id. */
- struct opaque_info_per_id
- {
- u_int32_t opaque_id;
- /* Thread for refresh/flush scheduling for this opaque-type/id. */
- struct thread *t_opaque_lsa_self;
- /* Backpointer to Opaque-LSA control information per opaque-type. */
- struct opaque_info_per_type *opqctl_type;
- /* Here comes an actual Opaque-LSA entry for this opaque-type/id. */
- struct ospf_lsa *lsa;
- };
- static struct opaque_info_per_type *register_opaque_info_per_type (struct ospf_opaque_functab *functab, struct ospf_lsa *new);
- static struct opaque_info_per_type *lookup_opaque_info_by_type (struct ospf_lsa *lsa);
- static struct opaque_info_per_id *register_opaque_info_per_id (struct opaque_info_per_type *oipt, struct ospf_lsa *new);
- static struct opaque_info_per_id *lookup_opaque_info_by_id (struct opaque_info_per_type *oipt, struct ospf_lsa *lsa);
- static struct opaque_info_per_id *register_opaque_lsa (struct ospf_lsa *new);
- static struct opaque_info_per_type *
- register_opaque_info_per_type (struct ospf_opaque_functab *functab,
- struct ospf_lsa *new)
- {
- struct ospf *top;
- struct opaque_info_per_type *oipt;
- if ((oipt = XCALLOC (MTYPE_OPAQUE_INFO_PER_TYPE,
- sizeof (struct opaque_info_per_type))) == NULL)
- {
- zlog_warn ("register_opaque_info_per_type: XMALLOC: %s", strerror (errno));
- goto out;
- }
- switch (new->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- oipt->owner = new->oi;
- listnode_add (new->oi->opaque_lsa_self, oipt);
- break;
- case OSPF_OPAQUE_AREA_LSA:
- oipt->owner = new->area;
- listnode_add (new->area->opaque_lsa_self, oipt);
- break;
- case OSPF_OPAQUE_AS_LSA:
- top = ospf_lookup ();
- if (new->area != NULL && (top = new->area->ospf) == NULL)
- {
- free_opaque_info_per_type ((void *) oipt);
- oipt = NULL;
- goto out; /* This case may not exist. */
- }
- oipt->owner = top;
- listnode_add (top->opaque_lsa_self, oipt);
- break;
- default:
- zlog_warn ("register_opaque_info_per_type: Unexpected LSA-type(%u)", new->data->type);
- free_opaque_info_per_type ((void *) oipt);
- oipt = NULL;
- goto out; /* This case may not exist. */
- }
- oipt->lsa_type = new->data->type;
- oipt->opaque_type = GET_OPAQUE_TYPE (ntohl (new->data->id.s_addr));
- oipt->status = PROC_NORMAL;
- oipt->t_opaque_lsa_self = NULL;
- oipt->functab = functab;
- functab->oipt = oipt;
- oipt->id_list = list_new ();
- oipt->id_list->del = free_opaque_info_per_id;
- out:
- return oipt;
- }
- static void
- free_opaque_info_per_type (void *val)
- {
- struct opaque_info_per_type *oipt = (struct opaque_info_per_type *) val;
- struct opaque_info_per_id *oipi;
- struct ospf_lsa *lsa;
- listnode node;
- /* Control information per opaque-id may still exist. */
- for (node = listhead (oipt->id_list); node; nextnode (node))
- {
- if ((oipi = getdata (node)) == NULL)
- continue;
- if ((lsa = oipi->lsa) == NULL)
- continue;
- if (IS_LSA_MAXAGE (lsa))
- continue;
- ospf_opaque_lsa_flush_schedule (lsa);
- }
- /* Remove "oipt" from its owner's self-originated LSA list. */
- switch (oipt->lsa_type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- {
- struct ospf_interface *oi = (struct ospf_interface *)(oipt->owner);
- listnode_delete (oi->opaque_lsa_self, oipt);
- break;
- }
- case OSPF_OPAQUE_AREA_LSA:
- {
- struct ospf_area *area = (struct ospf_area *)(oipt->owner);
- listnode_delete (area->opaque_lsa_self, oipt);
- break;
- }
- case OSPF_OPAQUE_AS_LSA:
- {
- struct ospf *top = (struct ospf *)(oipt->owner);
- listnode_delete (top->opaque_lsa_self, oipt);
- break;
- }
- default:
- zlog_warn ("free_opaque_info_per_type: Unexpected LSA-type(%u)", oipt->lsa_type);
- break; /* This case may not exist. */
- }
- OSPF_TIMER_OFF (oipt->t_opaque_lsa_self);
- list_delete (oipt->id_list);
- XFREE (MTYPE_OPAQUE_INFO_PER_TYPE, oipt);
- return;
- }
- static struct opaque_info_per_type *
- lookup_opaque_info_by_type (struct ospf_lsa *lsa)
- {
- struct ospf *top;
- struct ospf_area *area;
- struct ospf_interface *oi;
- list listtop = NULL;
- listnode node;
- struct opaque_info_per_type *oipt = NULL;
- u_char key = GET_OPAQUE_TYPE (ntohl (lsa->data->id.s_addr));
- switch (lsa->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- if ((oi = lsa->oi) != NULL)
- listtop = oi->opaque_lsa_self;
- else
- zlog_warn ("Type-9 Opaque-LSA: Reference to OI is missing?");
- break;
- case OSPF_OPAQUE_AREA_LSA:
- if ((area = lsa->area) != NULL)
- listtop = area->opaque_lsa_self;
- else
- zlog_warn ("Type-10 Opaque-LSA: Reference to AREA is missing?");
- break;
- case OSPF_OPAQUE_AS_LSA:
- top = ospf_lookup ();
- if ((area = lsa->area) != NULL && (top = area->ospf) == NULL)
- {
- zlog_warn ("Type-11 Opaque-LSA: Reference to OSPF is missing?");
- break; /* Unlikely to happen. */
- }
- listtop = top->opaque_lsa_self;
- break;
- default:
- zlog_warn ("lookup_opaque_info_by_type: Unexpected LSA-type(%u)", lsa->data->type);
- break;
- }
- if (listtop != NULL)
- for (node = listhead (listtop); node; nextnode (node))
- if ((oipt = getdata (node)) != NULL)
- if (oipt->opaque_type == key)
- return oipt;
- return NULL;
- }
- static struct opaque_info_per_id *
- register_opaque_info_per_id (struct opaque_info_per_type *oipt,
- struct ospf_lsa *new)
- {
- struct opaque_info_per_id *oipi;
- if ((oipi = XCALLOC (MTYPE_OPAQUE_INFO_PER_ID,
- sizeof (struct opaque_info_per_id))) == NULL)
- {
- zlog_warn ("register_opaque_info_per_id: XMALLOC: %s", strerror (errno));
- goto out;
- }
- oipi->opaque_id = GET_OPAQUE_ID (ntohl (new->data->id.s_addr));
- oipi->t_opaque_lsa_self = NULL;
- oipi->opqctl_type = oipt;
- oipi->lsa = ospf_lsa_lock (new);
- listnode_add (oipt->id_list, oipi);
- out:
- return oipi;
- }
- static void
- free_opaque_info_per_id (void *val)
- {
- struct opaque_info_per_id *oipi = (struct opaque_info_per_id *) val;
- OSPF_TIMER_OFF (oipi->t_opaque_lsa_self);
- if (oipi->lsa != NULL)
- ospf_lsa_unlock (oipi->lsa);
- XFREE (MTYPE_OPAQUE_INFO_PER_ID, oipi);
- return;
- }
- static struct opaque_info_per_id *
- lookup_opaque_info_by_id (struct opaque_info_per_type *oipt,
- struct ospf_lsa *lsa)
- {
- listnode node;
- struct opaque_info_per_id *oipi;
- u_int32_t key = GET_OPAQUE_ID (ntohl (lsa->data->id.s_addr));
- for (node = listhead (oipt->id_list); node; nextnode (node))
- if ((oipi = getdata (node)) != NULL)
- if (oipi->opaque_id == key)
- return oipi;
- return NULL;
- }
- static struct opaque_info_per_id *
- register_opaque_lsa (struct ospf_lsa *new)
- {
- struct ospf_opaque_functab *functab;
- struct opaque_info_per_type *oipt;
- struct opaque_info_per_id *oipi = NULL;
- if ((functab = ospf_opaque_functab_lookup (new)) == NULL)
- goto out;
- if ((oipt = lookup_opaque_info_by_type (new)) == NULL
- && (oipt = register_opaque_info_per_type (functab, new)) == NULL)
- goto out;
- if ((oipi = register_opaque_info_per_id (oipt, new)) == NULL)
- goto out;
- out:
- return oipi;
- }
- /*------------------------------------------------------------------------*
- * Followings are (vty) configuration functions for Opaque-LSAs handling.
- *------------------------------------------------------------------------*/
- DEFUN (capability_opaque,
- capability_opaque_cmd,
- "capability opaque",
- "Enable specific OSPF featuren"
- "Opaque LSAn")
- {
- struct ospf *ospf = (struct ospf *) vty->index;
- /* Turn on the "master switch" of opaque-lsa capability. */
- if (!CHECK_FLAG (ospf->config, OSPF_OPAQUE_CAPABLE))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Opaque capability: OFF -> ON");
- SET_FLAG (ospf->config, OSPF_OPAQUE_CAPABLE);
- ospf_renegotiate_optional_capabilities (ospf);
- }
- return CMD_SUCCESS;
- }
- ALIAS (capability_opaque,
- ospf_opaque_capable_cmd,
- "ospf opaque-lsa",
- "OSPF specific commandsn"
- "Enable the Opaque-LSA capability (rfc2370)n");
- DEFUN (no_capability_opaque,
- no_capability_opaque_cmd,
- "no capability opaque",
- NO_STR
- "Enable specific OSPF featuren"
- "Opaque LSAn")
- {
- struct ospf *ospf = (struct ospf *) vty->index;
- /* Turn off the "master switch" of opaque-lsa capability. */
- if (CHECK_FLAG (ospf->config, OSPF_OPAQUE_CAPABLE))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Opaque capability: ON -> OFF");
- UNSET_FLAG (ospf->config, OSPF_OPAQUE_CAPABLE);
- ospf_renegotiate_optional_capabilities (ospf);
- }
- return CMD_SUCCESS;
- }
- ALIAS (no_capability_opaque,
- no_ospf_opaque_capable_cmd,
- "no ospf opaque-lsa",
- NO_STR
- "OSPF specific commandsn"
- "Disable the Opaque-LSA capability (rfc2370)n");
- static void
- ospf_opaque_register_vty (void)
- {
- install_element (OSPF_NODE, &capability_opaque_cmd);
- install_element (OSPF_NODE, &no_capability_opaque_cmd);
- install_element (OSPF_NODE, &ospf_opaque_capable_cmd);
- install_element (OSPF_NODE, &no_ospf_opaque_capable_cmd);
- return;
- }
- /*------------------------------------------------------------------------*
- * Followings are collection of user-registered function callers.
- *------------------------------------------------------------------------*/
- static int
- opaque_lsa_new_if_callback (list funclist, struct interface *ifp)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- int rc = -1;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->new_if_hook != NULL)
- if ((* functab->new_if_hook)(ifp) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- static int
- opaque_lsa_del_if_callback (list funclist, struct interface *ifp)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- int rc = -1;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->del_if_hook != NULL)
- if ((* functab->del_if_hook)(ifp) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- static void
- opaque_lsa_ism_change_callback (list funclist,
- struct ospf_interface *oi, int old_status)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->ism_change_hook != NULL)
- (* functab->ism_change_hook)(oi, old_status);
- return;
- }
- static void
- opaque_lsa_nsm_change_callback (list funclist,
- struct ospf_neighbor *nbr, int old_status)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->nsm_change_hook != NULL)
- (* functab->nsm_change_hook)(nbr, old_status);
- return;
- }
- static void
- opaque_lsa_config_write_router_callback (list funclist, struct vty *vty)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->config_write_router != NULL)
- (* functab->config_write_router)(vty);
- return;
- }
- static void
- opaque_lsa_config_write_if_callback (list funclist,
- struct vty *vty, struct interface *ifp)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->config_write_if != NULL)
- (* functab->config_write_if)(vty, ifp);
- return;
- }
- static void
- opaque_lsa_config_write_debug_callback (list funclist, struct vty *vty)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->config_write_debug != NULL)
- (* functab->config_write_debug)(vty);
- return;
- }
- static int
- opaque_lsa_originate_callback (list funclist, void *lsa_type_dependent)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- int rc = -1;
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->lsa_originator != NULL)
- if ((* functab->lsa_originator)(lsa_type_dependent) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- static int
- new_lsa_callback (list funclist, struct ospf_lsa *lsa)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- int rc = -1;
- /* This function handles ALL types of LSAs, not only opaque ones. */
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->new_lsa_hook != NULL)
- if ((* functab->new_lsa_hook)(lsa) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- static int
- del_lsa_callback (list funclist, struct ospf_lsa *lsa)
- {
- listnode node;
- struct ospf_opaque_functab *functab;
- int rc = -1;
- /* This function handles ALL types of LSAs, not only opaque ones. */
- for (node = listhead (funclist); node; nextnode (node))
- if ((functab = getdata (node)) != NULL)
- if (functab->del_lsa_hook != NULL)
- if ((* functab->del_lsa_hook)(lsa) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- /*------------------------------------------------------------------------*
- * Followings are glue functions to call Opaque-LSA specific processing.
- *------------------------------------------------------------------------*/
- int
- ospf_opaque_new_if (struct interface *ifp)
- {
- list funclist;
- int rc = -1;
- funclist = ospf_opaque_wildcard_funclist;
- if (opaque_lsa_new_if_callback (funclist, ifp) != 0)
- goto out;
- funclist = ospf_opaque_type9_funclist;
- if (opaque_lsa_new_if_callback (funclist, ifp) != 0)
- goto out;
- funclist = ospf_opaque_type10_funclist;
- if (opaque_lsa_new_if_callback (funclist, ifp) != 0)
- goto out;
- funclist = ospf_opaque_type11_funclist;
- if (opaque_lsa_new_if_callback (funclist, ifp) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- int
- ospf_opaque_del_if (struct interface *ifp)
- {
- list funclist;
- int rc = -1;
- funclist = ospf_opaque_wildcard_funclist;
- if (opaque_lsa_del_if_callback (funclist, ifp) != 0)
- goto out;
- funclist = ospf_opaque_type9_funclist;
- if (opaque_lsa_del_if_callback (funclist, ifp) != 0)
- goto out;
- funclist = ospf_opaque_type10_funclist;
- if (opaque_lsa_del_if_callback (funclist, ifp) != 0)
- goto out;
- funclist = ospf_opaque_type11_funclist;
- if (opaque_lsa_del_if_callback (funclist, ifp) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- void
- ospf_opaque_ism_change (struct ospf_interface *oi, int old_status)
- {
- list funclist;
- funclist = ospf_opaque_wildcard_funclist;
- opaque_lsa_ism_change_callback (funclist, oi, old_status);
- funclist = ospf_opaque_type9_funclist;
- opaque_lsa_ism_change_callback (funclist, oi, old_status);
- funclist = ospf_opaque_type10_funclist;
- opaque_lsa_ism_change_callback (funclist, oi, old_status);
- funclist = ospf_opaque_type11_funclist;
- opaque_lsa_ism_change_callback (funclist, oi, old_status);
- return;
- }
- void
- ospf_opaque_nsm_change (struct ospf_neighbor *nbr, int old_state)
- {
- struct ospf *top;
- list funclist;
- if ((top = oi_to_top (nbr->oi)) == NULL)
- goto out;
- if (old_state != NSM_Full && nbr->state == NSM_Full)
- {
- if (CHECK_FLAG (nbr->options, OSPF_OPTION_O))
- {
- if (! CHECK_FLAG (top->opaque, OPAQUE_OPERATION_READY_BIT))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Opaque-LSA: Now get operational!");
- SET_FLAG (top->opaque, OPAQUE_OPERATION_READY_BIT);
- }
- ospf_opaque_lsa_originate_schedule (nbr->oi, NULL);
- }
- }
- else
- if (old_state == NSM_Full && nbr->state != NSM_Full)
- {
- #ifdef NOTYET
- /*
- * If no more opaque-capable full-state neighbor remains in the
- * flooding scope which corresponds to Opaque-LSA type, periodic
- * LS flooding should be stopped.
- */
- #endif /* NOTYET */
- ;
- }
- funclist = ospf_opaque_wildcard_funclist;
- opaque_lsa_nsm_change_callback (funclist, nbr, old_state);
- funclist = ospf_opaque_type9_funclist;
- opaque_lsa_nsm_change_callback (funclist, nbr, old_state);
- funclist = ospf_opaque_type10_funclist;
- opaque_lsa_nsm_change_callback (funclist, nbr, old_state);
- funclist = ospf_opaque_type11_funclist;
- opaque_lsa_nsm_change_callback (funclist, nbr, old_state);
- out:
- return;
- }
- void
- ospf_opaque_config_write_router (struct vty *vty, struct ospf *ospf)
- {
- list funclist;
- if (CHECK_FLAG (ospf->config, OSPF_OPAQUE_CAPABLE))
- vty_out (vty, " capability opaque%s", VTY_NEWLINE);
- funclist = ospf_opaque_wildcard_funclist;
- opaque_lsa_config_write_router_callback (funclist, vty);
- funclist = ospf_opaque_type9_funclist;
- opaque_lsa_config_write_router_callback (funclist, vty);
- funclist = ospf_opaque_type10_funclist;
- opaque_lsa_config_write_router_callback (funclist, vty);
- funclist = ospf_opaque_type11_funclist;
- opaque_lsa_config_write_router_callback (funclist, vty);
- return;
- }
- void
- ospf_opaque_config_write_if (struct vty *vty, struct interface *ifp)
- {
- list funclist;
- funclist = ospf_opaque_wildcard_funclist;
- opaque_lsa_config_write_if_callback (funclist, vty, ifp);
- funclist = ospf_opaque_type9_funclist;
- opaque_lsa_config_write_if_callback (funclist, vty, ifp);
- funclist = ospf_opaque_type10_funclist;
- opaque_lsa_config_write_if_callback (funclist, vty, ifp);
- funclist = ospf_opaque_type11_funclist;
- opaque_lsa_config_write_if_callback (funclist, vty, ifp);
- return;
- }
- void
- ospf_opaque_config_write_debug (struct vty *vty)
- {
- list funclist;
- funclist = ospf_opaque_wildcard_funclist;
- opaque_lsa_config_write_debug_callback (funclist, vty);
- funclist = ospf_opaque_type9_funclist;
- opaque_lsa_config_write_debug_callback (funclist, vty);
- funclist = ospf_opaque_type10_funclist;
- opaque_lsa_config_write_debug_callback (funclist, vty);
- funclist = ospf_opaque_type11_funclist;
- opaque_lsa_config_write_debug_callback (funclist, vty);
- return;
- }
- void
- show_opaque_info_detail (struct vty *vty, struct ospf_lsa *lsa)
- {
- struct lsa_header *lsah = (struct lsa_header *) lsa->data;
- u_int32_t lsid = ntohl (lsah->id.s_addr);
- u_char opaque_type = GET_OPAQUE_TYPE (lsid);
- u_int32_t opaque_id = GET_OPAQUE_ID (lsid);
- struct ospf_opaque_functab *functab;
- /* Switch output functionality by vty address. */
- if (vty != NULL)
- {
- vty_out (vty, " Opaque-Type %u (%s)%s", opaque_type,
- ospf_opaque_type_name (opaque_type), VTY_NEWLINE);
- vty_out (vty, " Opaque-ID 0x%x%s", opaque_id, VTY_NEWLINE);
- vty_out (vty, " Opaque-Info: %u octets of data%s%s",
- ntohs (lsah->length) - OSPF_LSA_HEADER_SIZE,
- VALID_OPAQUE_INFO_LEN(lsah) ? "" : "(Invalid length?)",
- VTY_NEWLINE);
- }
- else
- {
- zlog_info (" Opaque-Type %u (%s)", opaque_type,
- ospf_opaque_type_name (opaque_type));
- zlog_info (" Opaque-ID 0x%x", opaque_id);
- zlog_info (" Opaque-Info: %u octets of data%s",
- ntohs (lsah->length) - OSPF_LSA_HEADER_SIZE,
- VALID_OPAQUE_INFO_LEN(lsah) ? "" : "(Invalid length?)");
- }
- /* Call individual output functions. */
- if ((functab = ospf_opaque_functab_lookup (lsa)) != NULL)
- if (functab->show_opaque_info != NULL)
- (* functab->show_opaque_info)(vty, lsa);
- return;
- }
- void
- ospf_opaque_lsa_dump (struct stream *s, u_int16_t length)
- {
- struct ospf_lsa lsa;
- lsa.data = (struct lsa_header *) STREAM_PNT (s);
- show_opaque_info_detail (NULL, &lsa);
- return;
- }
- static int
- ospf_opaque_lsa_install_hook (struct ospf_lsa *lsa)
- {
- list funclist;
- int rc = -1;
- /*
- * Some Opaque-LSA user may want to monitor every LSA installation
- * into the LSDB, regardless with target LSA type.
- */
- funclist = ospf_opaque_wildcard_funclist;
- if (new_lsa_callback (funclist, lsa) != 0)
- goto out;
- funclist = ospf_opaque_type9_funclist;
- if (new_lsa_callback (funclist, lsa) != 0)
- goto out;
- funclist = ospf_opaque_type10_funclist;
- if (new_lsa_callback (funclist, lsa) != 0)
- goto out;
- funclist = ospf_opaque_type11_funclist;
- if (new_lsa_callback (funclist, lsa) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- static int
- ospf_opaque_lsa_delete_hook (struct ospf_lsa *lsa)
- {
- list funclist;
- int rc = -1;
- /*
- * Some Opaque-LSA user may want to monitor every LSA deletion
- * from the LSDB, regardless with target LSA type.
- */
- funclist = ospf_opaque_wildcard_funclist;
- if (del_lsa_callback (funclist, lsa) != 0)
- goto out;
- funclist = ospf_opaque_type9_funclist;
- if (del_lsa_callback (funclist, lsa) != 0)
- goto out;
- funclist = ospf_opaque_type10_funclist;
- if (del_lsa_callback (funclist, lsa) != 0)
- goto out;
- funclist = ospf_opaque_type11_funclist;
- if (del_lsa_callback (funclist, lsa) != 0)
- goto out;
- rc = 0;
- out:
- return rc;
- }
- /*------------------------------------------------------------------------*
- * Followings are Opaque-LSA origination/refresh management functions.
- *------------------------------------------------------------------------*/
- static int ospf_opaque_type9_lsa_originate (struct thread *t);
- static int ospf_opaque_type10_lsa_originate (struct thread *t);
- static int ospf_opaque_type11_lsa_originate (struct thread *t);
- static void ospf_opaque_lsa_reoriginate_resume (list listtop, void *arg);
- void
- ospf_opaque_lsa_originate_schedule (struct ospf_interface *oi, int *delay0)
- {
- struct ospf *top;
- struct ospf_area *area;
- listnode node;
- struct opaque_info_per_type *oipt;
- int delay = 0;
- if ((top = oi_to_top (oi)) == NULL || (area = oi->area) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_originate_schedule: Invalid argument?");
- goto out;
- }
- /* It may not a right time to schedule origination now. */
- if (! CHECK_FLAG (top->opaque, OPAQUE_OPERATION_READY_BIT))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("ospf_opaque_lsa_originate_schedule: Not operational.");
- goto out; /* This is not an error. */
- }
- if (IS_OPAQUE_LSA_ORIGINATION_BLOCKED (top->opaque))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("ospf_opaque_lsa_originate_schedule: Under blockade.");
- goto out; /* This is not an error, too. */
- }
- if (delay0 != NULL)
- delay = *delay0;
- /*
- * There might be some entries that have been waiting for triggering
- * of per opaque-type re-origination get resumed.
- */
- ospf_opaque_lsa_reoriginate_resume ( oi->opaque_lsa_self, (void *) oi);
- ospf_opaque_lsa_reoriginate_resume (area->opaque_lsa_self, (void *) area);
- ospf_opaque_lsa_reoriginate_resume ( top->opaque_lsa_self, (void *) top);
- /*
- * Now, schedule origination of all Opaque-LSAs per opaque-type.
- */
- if (! list_isempty (ospf_opaque_type9_funclist)
- && list_isempty (oi->opaque_lsa_self)
- && oi->t_opaque_lsa_self == NULL)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Schedule Type-9 Opaque-LSA origination in %d sec later.", delay);
- oi->t_opaque_lsa_self =
- thread_add_timer (master, ospf_opaque_type9_lsa_originate, oi, delay);
- delay += OSPF_MIN_LS_INTERVAL;
- }
- if (! list_isempty (ospf_opaque_type10_funclist)
- && list_isempty (area->opaque_lsa_self)
- && area->t_opaque_lsa_self == NULL)
- {
- /*
- * One AREA may contain multiple OIs, but above 2nd and 3rd
- * conditions prevent from scheduling the originate function
- * again and again.
- */
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Schedule Type-10 Opaque-LSA origination in %d sec later.", delay);
- area->t_opaque_lsa_self =
- thread_add_timer (master, ospf_opaque_type10_lsa_originate,
- area, delay);
- delay += OSPF_MIN_LS_INTERVAL;
- }
- if (! list_isempty (ospf_opaque_type11_funclist)
- && list_isempty (top->opaque_lsa_self)
- && top->t_opaque_lsa_self == NULL)
- {
- /*
- * One OSPF may contain multiple AREAs, but above 2nd and 3rd
- * conditions prevent from scheduling the originate function
- * again and again.
- */
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Schedule Type-11 Opaque-LSA origination in %d sec later.", delay);
- top->t_opaque_lsa_self =
- thread_add_timer (master, ospf_opaque_type11_lsa_originate,
- top, delay);
- delay += OSPF_MIN_LS_INTERVAL;
- }
- /*
- * Following section treats a special situation that this node's
- * opaque capability has changed as "ON -> OFF -> ON".
- */
- if (! list_isempty (ospf_opaque_type9_funclist)
- && ! list_isempty (oi->opaque_lsa_self))
- {
- for (node = listhead (oi->opaque_lsa_self); node; nextnode (node))
- {
- if ((oipt = getdata (node)) == NULL /* Something wrong? */
- || oipt->t_opaque_lsa_self != NULL /* Waiting for a thread call. */
- || oipt->status == PROC_SUSPEND /* Cannot originate now. */
- || ! list_isempty (oipt->id_list)) /* Handler is already active. */
- continue;
- ospf_opaque_lsa_reoriginate_schedule ((void *) oi,
- OSPF_OPAQUE_LINK_LSA, oipt->opaque_type);
- }
- }
- if (! list_isempty (ospf_opaque_type10_funclist)
- && ! list_isempty (area->opaque_lsa_self))
- {
- for (node = listhead (area->opaque_lsa_self); node; nextnode (node))
- {
- if ((oipt = getdata (node)) == NULL /* Something wrong? */
- || oipt->t_opaque_lsa_self != NULL /* Waiting for a thread call. */
- || oipt->status == PROC_SUSPEND /* Cannot originate now. */
- || ! list_isempty (oipt->id_list)) /* Handler is already active. */
- continue;
- ospf_opaque_lsa_reoriginate_schedule ((void *) area,
- OSPF_OPAQUE_AREA_LSA, oipt->opaque_type);
- }
- }
- if (! list_isempty (ospf_opaque_type11_funclist)
- && ! list_isempty (top->opaque_lsa_self))
- {
- for (node = listhead (top->opaque_lsa_self); node; nextnode (node))
- {
- if ((oipt = getdata (node)) == NULL /* Something wrong? */
- || oipt->t_opaque_lsa_self != NULL /* Waiting for a thread call. */
- || oipt->status == PROC_SUSPEND /* Cannot originate now. */
- || ! list_isempty (oipt->id_list)) /* Handler is already active. */
- continue;
- ospf_opaque_lsa_reoriginate_schedule ((void *) top,
- OSPF_OPAQUE_AS_LSA, oipt->opaque_type);
- }
- }
- if (delay0 != NULL)
- *delay0 = delay;
- out:
- return;
- }
- static int
- ospf_opaque_type9_lsa_originate (struct thread *t)
- {
- struct ospf_interface *oi;
- int rc;
- oi = THREAD_ARG (t);
- oi->t_opaque_lsa_self = NULL;
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Timer[Type9-LSA]: Originate Opaque-LSAs for OI %s",
- IF_NAME (oi));
- rc = opaque_lsa_originate_callback (ospf_opaque_type9_funclist, oi);
- return rc;
- }
- static int
- ospf_opaque_type10_lsa_originate (struct thread *t)
- {
- struct ospf_area *area;
- int rc;
- area = THREAD_ARG (t);
- area->t_opaque_lsa_self = NULL;
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Timer[Type10-LSA]: Originate Opaque-LSAs for Area %s",
- inet_ntoa (area->area_id));
- rc = opaque_lsa_originate_callback (ospf_opaque_type10_funclist, area);
- return rc;
- }
- static int
- ospf_opaque_type11_lsa_originate (struct thread *t)
- {
- struct ospf *top;
- int rc;
- top = THREAD_ARG (t);
- top->t_opaque_lsa_self = NULL;
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Timer[Type11-LSA]: Originate AS-External Opaque-LSAs");
- rc = opaque_lsa_originate_callback (ospf_opaque_type11_funclist, top);
- return rc;
- }
- static void
- ospf_opaque_lsa_reoriginate_resume (list listtop, void *arg)
- {
- listnode node;
- struct opaque_info_per_type *oipt;
- struct ospf_opaque_functab *functab;
- if (listtop == NULL)
- goto out;
- /*
- * Pickup oipt entries those which in SUSPEND status, and give
- * them a chance to start re-origination now.
- */
- for (node = listhead (listtop); node; nextnode (node))
- {
- if ((oipt = getdata (node)) == NULL
- || oipt->status != PROC_SUSPEND)
- continue;
- oipt->status = PROC_NORMAL;
- if ((functab = oipt->functab) == NULL
- || functab->lsa_originator == NULL)
- continue;
- if ((* functab->lsa_originator)(arg) != 0)
- {
- zlog_warn ("ospf_opaque_lsa_reoriginate_resume: Failed (opaque-type=%u)", oipt->opaque_type);
- continue;
- }
- }
- out:
- return;
- }
- struct ospf_lsa *
- ospf_opaque_lsa_install (struct ospf_lsa *lsa, int rt_recalc)
- {
- struct ospf_lsa *new = NULL;
- struct opaque_info_per_type *oipt;
- struct opaque_info_per_id *oipi;
- struct ospf *top;
- /* Don't take "rt_recalc" into consideration for now. *//* XXX */
- if (! IS_LSA_SELF (lsa))
- {
- new = lsa; /* Don't touch this LSA. */
- goto out;
- }
- if (IS_DEBUG_OSPF (lsa, LSA_INSTALL))
- zlog_info ("Install Type-%u Opaque-LSA: [opaque-type=%u, opaque-id=%x]", lsa->data->type, GET_OPAQUE_TYPE (ntohl (lsa->data->id.s_addr)), GET_OPAQUE_ID (ntohl (lsa->data->id.s_addr)));
- /* Replace the existing lsa with the new one. */
- if ((oipt = lookup_opaque_info_by_type (lsa)) != NULL
- && (oipi = lookup_opaque_info_by_id (oipt, lsa)) != NULL)
- {
- ospf_lsa_unlock (oipi->lsa);
- oipi->lsa = ospf_lsa_lock (lsa);
- }
- /* Register the new lsa entry and get its control info. */
- else
- if ((oipi = register_opaque_lsa (lsa)) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_install: register_opaque_lsa() ?");
- goto out;
- }
- /*
- * Make use of a common mechanism (ospf_lsa_refresh_walker)
- * for periodic refresh of self-originated Opaque-LSAs.
- */
- switch (lsa->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- if ((top = oi_to_top (lsa->oi)) == NULL)
- {
- /* Above conditions must have passed. */
- zlog_warn ("ospf_opaque_lsa_install: Sonmething wrong?");
- goto out;
- }
- break;
- case OSPF_OPAQUE_AREA_LSA:
- if (lsa->area == NULL || (top = lsa->area->ospf) == NULL)
- {
- /* Above conditions must have passed. */
- zlog_warn ("ospf_opaque_lsa_install: Sonmething wrong?");
- goto out;
- }
- break;
- case OSPF_OPAQUE_AS_LSA:
- top = ospf_lookup ();
- if (lsa->area != NULL && (top = lsa->area->ospf) == NULL)
- {
- /* Above conditions must have passed. */
- zlog_warn ("ospf_opaque_lsa_install: Sonmething wrong?");
- goto out;
- }
- break;
- default:
- zlog_warn ("ospf_opaque_lsa_install: Unexpected LSA-type(%u)", lsa->data->type);
- goto out;
- }
- ospf_refresher_register_lsa (top, lsa);
- new = lsa;
- out:
- return new;
- }
- void
- ospf_opaque_lsa_refresh (struct ospf_lsa *lsa)
- {
- struct ospf *ospf;
- struct ospf_opaque_functab *functab;
- ospf = ospf_lookup ();
- if ((functab = ospf_opaque_functab_lookup (lsa)) == NULL
- || functab->lsa_refresher == NULL)
- {
- /*
- * Though this LSA seems to have originated on this node, the
- * handling module for this "lsa-type and opaque-type" was
- * already deleted sometime ago.
- * Anyway, this node still has a responsibility to flush this
- * LSA from the routing domain.
- */
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("LSA[Type%d:%s]: Flush stray Opaque-LSA", lsa->data->type, inet_ntoa (lsa->data->id));
- lsa->data->ls_age = htons (OSPF_LSA_MAXAGE);
- ospf_lsa_maxage (ospf, lsa);
- }
- else
- (* functab->lsa_refresher)(lsa);
- return;
- }
- /*------------------------------------------------------------------------*
- * Followings are re-origination/refresh/flush operations of Opaque-LSAs,
- * triggered by external interventions (vty session, signaling, etc).
- *------------------------------------------------------------------------*/
- #define OSPF_OPAQUE_TIMER_ON(T,F,L,V)
- if (!(T))
- (T) = thread_add_timer (master, (F), (L), (V))
- static struct ospf_lsa *pseudo_lsa (struct ospf_interface *oi, struct ospf_area *area, u_char lsa_type, u_char opaque_type);
- static int ospf_opaque_type9_lsa_reoriginate_timer (struct thread *t);
- static int ospf_opaque_type10_lsa_reoriginate_timer (struct thread *t);
- static int ospf_opaque_type11_lsa_reoriginate_timer (struct thread *t);
- static int ospf_opaque_lsa_refresh_timer (struct thread *t);
- void
- ospf_opaque_lsa_reoriginate_schedule (void *lsa_type_dependent,
- u_char lsa_type, u_char opaque_type)
- {
- struct ospf *top;
- struct ospf_area dummy, *area = NULL;
- struct ospf_interface *oi = NULL;
- struct ospf_lsa *lsa;
- struct opaque_info_per_type *oipt;
- int (* func)(struct thread *t) = NULL;
- int delay;
- switch (lsa_type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- if ((oi = (struct ospf_interface *) lsa_type_dependent) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_reoriginate_schedule: Type-9 Opaque-LSA: Invalid parameter?");
- goto out;
- }
- if ((top = oi_to_top (oi)) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_reoriginate_schedule: OI(%s) -> TOP?", IF_NAME (oi));
- goto out;
- }
- if (! list_isempty (ospf_opaque_type9_funclist)
- && list_isempty (oi->opaque_lsa_self)
- && oi->t_opaque_lsa_self != NULL)
- {
- zlog_warn ("Type-9 Opaque-LSA (opaque_type=%u): Common origination for OI(%s) has already started", opaque_type, IF_NAME (oi));
- goto out;
- }
- func = ospf_opaque_type9_lsa_reoriginate_timer;
- break;
- case OSPF_OPAQUE_AREA_LSA:
- if ((area = (struct ospf_area *) lsa_type_dependent) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_reoriginate_schedule: Type-10 Opaque-LSA: Invalid parameter?");
- goto out;
- }
- if ((top = area->ospf) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_reoriginate_schedule: AREA(%s) -> TOP?", inet_ntoa (area->area_id));
- goto out;
- }
- if (! list_isempty (ospf_opaque_type10_funclist)
- && list_isempty (area->opaque_lsa_self)
- && area->t_opaque_lsa_self != NULL)
- {
- zlog_warn ("Type-10 Opaque-LSA (opaque_type=%u): Common origination for AREA(%s) has already started", opaque_type, inet_ntoa (area->area_id));
- goto out;
- }
- func = ospf_opaque_type10_lsa_reoriginate_timer;
- break;
- case OSPF_OPAQUE_AS_LSA:
- if ((top = (struct ospf *) lsa_type_dependent) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_reoriginate_schedule: Type-11 Opaque-LSA: Invalid parameter?");
- goto out;
- }
- if (! list_isempty (ospf_opaque_type11_funclist)
- && list_isempty (top->opaque_lsa_self)
- && top->t_opaque_lsa_self != NULL)
- {
- zlog_warn ("Type-11 Opaque-LSA (opaque_type=%u): Common origination has already started", opaque_type);
- goto out;
- }
- /* Fake "area" to pass "ospf" to a lookup function later. */
- dummy.ospf = top;
- area = &dummy;
- func = ospf_opaque_type11_lsa_reoriginate_timer;
- break;
- default:
- zlog_warn ("ospf_opaque_lsa_reoriginate_schedule: Unexpected LSA-type(%u)", lsa_type);
- goto out;
- }
- /* It may not a right time to schedule reorigination now. */
- if (! CHECK_FLAG (top->opaque, OPAQUE_OPERATION_READY_BIT))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("ospf_opaque_lsa_reoriginate_schedule: Not operational.");
- goto out; /* This is not an error. */
- }
- if (IS_OPAQUE_LSA_ORIGINATION_BLOCKED (top->opaque))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("ospf_opaque_lsa_reoriginate_schedule: Under blockade.");
- goto out; /* This is not an error, too. */
- }
- /* Generate a dummy lsa to be passed for a lookup function. */
- lsa = pseudo_lsa (oi, area, lsa_type, opaque_type);
- if ((oipt = lookup_opaque_info_by_type (lsa)) == NULL)
- {
- struct ospf_opaque_functab *functab;
- if ((functab = ospf_opaque_functab_lookup (lsa)) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_reoriginate_schedule: No associated function?: lsa_type(%u), opaque_type(%u)", lsa_type, opaque_type);
- goto out;
- }
- if ((oipt = register_opaque_info_per_type (functab, lsa)) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_reoriginate_schedule: Cannot get a control info?: lsa_type(%u), opaque_type(%u)", lsa_type, opaque_type);
- goto out;
- }
- }
- if (oipt->t_opaque_lsa_self != NULL)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Type-%u Opaque-LSA has already scheduled to RE-ORIGINATE: [opaque-type=%u]", lsa_type, GET_OPAQUE_TYPE (ntohl (lsa->data->id.s_addr)));
- goto out;
- }
- /*
- * Different from initial origination time, in which various conditions
- * (opaque capability, neighbor status etc) are assured by caller of
- * the originating function "ospf_opaque_lsa_originate_schedule ()",
- * it is highly possible that these conditions might not be satisfied
- * at the time of re-origination function is to be called.
- */
- delay = OSPF_MIN_LS_INTERVAL; /* XXX */
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Schedule Type-%u Opaque-LSA to RE-ORIGINATE in %d sec later: [opaque-type=%u]", lsa_type, delay, GET_OPAQUE_TYPE (ntohl (lsa->data->id.s_addr)));
- OSPF_OPAQUE_TIMER_ON (oipt->t_opaque_lsa_self, func, oipt, delay);
- out:
- return;
- }
- static struct ospf_lsa *
- pseudo_lsa (struct ospf_interface *oi, struct ospf_area *area,
- u_char lsa_type, u_char opaque_type)
- {
- static struct ospf_lsa lsa = { 0 };
- static struct lsa_header lsah = { 0 };
- u_int32_t tmp;
- lsa.oi = oi;
- lsa.area = area;
- lsa.data = &lsah;
- lsah.type = lsa_type;
- tmp = SET_OPAQUE_LSID (opaque_type, 0); /* Opaque-ID is unused here. */
- lsah.id.s_addr = htonl (tmp);
- return &lsa;
- }
- static int
- ospf_opaque_type9_lsa_reoriginate_timer (struct thread *t)
- {
- struct opaque_info_per_type *oipt;
- struct ospf_opaque_functab *functab;
- struct ospf *top;
- struct ospf_interface *oi;
- int rc = -1;
- oipt = THREAD_ARG (t);
- oipt->t_opaque_lsa_self = NULL;
- if ((functab = oipt->functab) == NULL
- || functab->lsa_originator == NULL)
- {
- zlog_warn ("ospf_opaque_type9_lsa_reoriginate_timer: No associated function?");
- goto out;
- }
- oi = (struct ospf_interface *) oipt->owner;
- if ((top = oi_to_top (oi)) == NULL)
- {
- zlog_warn ("ospf_opaque_type9_lsa_reoriginate_timer: Something wrong?");
- goto out;
- }
- if (! CHECK_FLAG (top->config, OSPF_OPAQUE_CAPABLE)
- || ! ospf_if_is_enable (oi)
- || ospf_nbr_count_opaque_capable (oi) == 0)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Suspend re-origination of Type-9 Opaque-LSAs (opaque-type=%u) for a while...", oipt->opaque_type);
-
- oipt->status = PROC_SUSPEND;
- rc = 0;
- goto out;
- }
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Timer[Type9-LSA]: Re-originate Opaque-LSAs (opaque-type=%u) for OI (%s)", oipt->opaque_type, IF_NAME (oi));
- rc = (* functab->lsa_originator)(oi);
- out:
- return rc;
- }
- static int
- ospf_opaque_type10_lsa_reoriginate_timer (struct thread *t)
- {
- struct opaque_info_per_type *oipt;
- struct ospf_opaque_functab *functab;
- listnode node;
- struct ospf *top;
- struct ospf_area *area;
- struct ospf_interface *oi;
- int n, rc = -1;
- oipt = THREAD_ARG (t);
- oipt->t_opaque_lsa_self = NULL;
- if ((functab = oipt->functab) == NULL
- || functab->lsa_originator == NULL)
- {
- zlog_warn ("ospf_opaque_type10_lsa_reoriginate_timer: No associated function?");
- goto out;
- }
- area = (struct ospf_area *) oipt->owner;
- if (area == NULL || (top = area->ospf) == NULL)
- {
- zlog_warn ("ospf_opaque_type10_lsa_reoriginate_timer: Something wrong?");
- goto out;
- }
- /* There must be at least one "opaque-capable, full-state" neighbor. */
- n = 0;
- for (node = listhead (area->oiflist); node; nextnode (node))
- {
- if ((oi = getdata (node)) == NULL)
- continue;
- if ((n = ospf_nbr_count_opaque_capable (oi)) > 0)
- break;
- }
- if (n == 0 || ! CHECK_FLAG (top->config, OSPF_OPAQUE_CAPABLE))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Suspend re-origination of Type-10 Opaque-LSAs (opaque-type=%u) for a while...", oipt->opaque_type);
- oipt->status = PROC_SUSPEND;
- rc = 0;
- goto out;
- }
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Timer[Type10-LSA]: Re-originate Opaque-LSAs (opaque-type=%u) for Area %s", oipt->opaque_type, inet_ntoa (area->area_id));
- rc = (* functab->lsa_originator)(area);
- out:
- return rc;
- }
- static int
- ospf_opaque_type11_lsa_reoriginate_timer (struct thread *t)
- {
- struct opaque_info_per_type *oipt;
- struct ospf_opaque_functab *functab;
- struct ospf *top;
- int rc = -1;
- oipt = THREAD_ARG (t);
- oipt->t_opaque_lsa_self = NULL;
- if ((functab = oipt->functab) == NULL
- || functab->lsa_originator == NULL)
- {
- zlog_warn ("ospf_opaque_type11_lsa_reoriginate_timer: No associated function?");
- goto out;
- }
- if ((top = (struct ospf *) oipt->owner) == NULL)
- {
- zlog_warn ("ospf_opaque_type11_lsa_reoriginate_timer: Something wrong?");
- goto out;
- }
- if (! CHECK_FLAG (top->config, OSPF_OPAQUE_CAPABLE))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Suspend re-origination of Type-11 Opaque-LSAs (opaque-type=%u) for a while...", oipt->opaque_type);
-
- oipt->status = PROC_SUSPEND;
- rc = 0;
- goto out;
- }
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Timer[Type11-LSA]: Re-originate Opaque-LSAs (opaque-type=%u).", oipt->opaque_type);
- rc = (* functab->lsa_originator)(top);
- out:
- return rc;
- }
- extern int ospf_lsa_refresh_delay (struct ospf_lsa *); /* ospf_lsa.c */
- void
- ospf_opaque_lsa_refresh_schedule (struct ospf_lsa *lsa0)
- {
- struct ospf *ospf = ospf;
- struct opaque_info_per_type *oipt;
- struct opaque_info_per_id *oipi;
- struct ospf_lsa *lsa;
- int delay;
- ospf = ospf_lookup ();
- if ((oipt = lookup_opaque_info_by_type (lsa0)) == NULL
- || (oipi = lookup_opaque_info_by_id (oipt, lsa0)) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_refresh_schedule: Invalid parameter?");
- goto out;
- }
- /* Given "lsa0" and current "oipi->lsa" may different, but harmless. */
- if ((lsa = oipi->lsa) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_refresh_schedule: Something wrong?");
- goto out;
- }
- if (oipi->t_opaque_lsa_self != NULL)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Type-%u Opaque-LSA has already scheduled to REFRESH: [opaque-type=%u, opaque-id=%x]", lsa->data->type, GET_OPAQUE_TYPE (ntohl (lsa->data->id.s_addr)), GET_OPAQUE_ID (ntohl (lsa->data->id.s_addr)));
- goto out;
- }
- /* Delete this lsa from neighbor retransmit-list. */
- switch (lsa->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- case OSPF_OPAQUE_AREA_LSA:
- ospf_ls_retransmit_delete_nbr_area (lsa->area, lsa);
- break;
- case OSPF_OPAQUE_AS_LSA:
- ospf_ls_retransmit_delete_nbr_as (ospf, lsa);
- break;
- default:
- zlog_warn ("ospf_opaque_lsa_refresh_schedule: Unexpected LSA-type(%u)", lsa->data->type);
- goto out;
- }
- delay = ospf_lsa_refresh_delay (lsa);
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Schedule Type-%u Opaque-LSA to REFRESH in %d sec later: [opaque-type=%u, opaque-id=%x]", lsa->data->type, delay, GET_OPAQUE_TYPE (ntohl (lsa->data->id.s_addr)), GET_OPAQUE_ID (ntohl (lsa->data->id.s_addr)));
- OSPF_OPAQUE_TIMER_ON (oipi->t_opaque_lsa_self,
- ospf_opaque_lsa_refresh_timer, oipi, delay);
- out:
- return;
- }
- static int
- ospf_opaque_lsa_refresh_timer (struct thread *t)
- {
- struct opaque_info_per_id *oipi;
- struct ospf_opaque_functab *functab;
- struct ospf_lsa *lsa;
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Timer[Opaque-LSA]: (Opaque-LSA Refresh expire)");
- oipi = THREAD_ARG (t);
- oipi->t_opaque_lsa_self = NULL;
- if ((lsa = oipi->lsa) != NULL)
- if ((functab = oipi->opqctl_type->functab) != NULL)
- if (functab->lsa_refresher != NULL)
- (* functab->lsa_refresher)(lsa);
- return 0;
- }
- void
- ospf_opaque_lsa_flush_schedule (struct ospf_lsa *lsa0)
- {
- struct ospf *ospf = ospf;
- struct opaque_info_per_type *oipt;
- struct opaque_info_per_id *oipi;
- struct ospf_lsa *lsa;
- ospf = ospf_lookup ();
- if ((oipt = lookup_opaque_info_by_type (lsa0)) == NULL
- || (oipi = lookup_opaque_info_by_id (oipt, lsa0)) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_flush_schedule: Invalid parameter?");
- goto out;
- }
- /* Given "lsa0" and current "oipi->lsa" may different, but harmless. */
- if ((lsa = oipi->lsa) == NULL)
- {
- zlog_warn ("ospf_opaque_lsa_flush_schedule: Something wrong?");
- goto out;
- }
- /* Delete this lsa from neighbor retransmit-list. */
- switch (lsa->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- case OSPF_OPAQUE_AREA_LSA:
- ospf_ls_retransmit_delete_nbr_area (lsa->area, lsa);
- break;
- case OSPF_OPAQUE_AS_LSA:
- ospf_ls_retransmit_delete_nbr_as (ospf, lsa);
- break;
- default:
- zlog_warn ("ospf_opaque_lsa_flush_schedule: Unexpected LSA-type(%u)", lsa->data->type);
- goto out;
- }
- /* Dequeue listnode entry from the list. */
- listnode_delete (oipt->id_list, oipi);
- /* Avoid misjudgement in the next lookup. */
- if (listcount (oipt->id_list) == 0)
- oipt->id_list->head = oipt->id_list->tail = NULL;
- /* Disassociate internal control information with the given lsa. */
- oipi->lsa = NULL;
- free_opaque_info_per_id ((void *) oipi);
- /* Force given lsa's age to MaxAge. */
- lsa->data->ls_age = htons (OSPF_LSA_MAXAGE);
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Schedule Type-%u Opaque-LSA to FLUSH: [opaque-type=%u, opaque-id=%x]", lsa->data->type, GET_OPAQUE_TYPE (ntohl (lsa->data->id.s_addr)), GET_OPAQUE_ID (ntohl (lsa->data->id.s_addr)));
- /* This lsa will be flushed and removed eventually. */
- ospf_lsa_maxage (ospf, lsa);
- out:
- return;
- }
- /*------------------------------------------------------------------------*
- * Followings are control functions to block origination after restart.
- *------------------------------------------------------------------------*/
- static void ospf_opaque_exclude_lsa_from_lsreq (struct route_table *nbrs, struct ospf_neighbor *inbr, struct ospf_lsa *lsa);
- static void ospf_opaque_type9_lsa_rxmt_nbr_check (struct ospf_interface *oi);
- static void ospf_opaque_type10_lsa_rxmt_nbr_check (struct ospf_area *area);
- static void ospf_opaque_type11_lsa_rxmt_nbr_check (struct ospf *top);
- static unsigned long ospf_opaque_nrxmt_self (struct route_table *nbrs, int lsa_type);
- void
- ospf_opaque_adjust_lsreq (struct ospf_neighbor *nbr, list lsas)
- {
- struct ospf *top;
- struct ospf_area *area;
- struct ospf_interface *oi;
- listnode node1, node2;
- struct ospf_lsa *lsa;
- if ((top = oi_to_top (nbr->oi)) == NULL)
- goto out;
- /*
- * If an instance of self-originated Opaque-LSA is found in the given
- * LSA list, and it is not installed to LSDB yet, exclude it from the
- * list "nbr->ls_req". In this way, it is assured that an LSReq message,
- * which might be sent in the process of flooding, will not request for
- * the LSA to be flushed immediately; otherwise, depending on timing,
- * an LSUpd message will carry instances of target LSAs with MaxAge,
- * while other LSUpd message might carry old LSA instances (non-MaxAge).
- * Obviously, the latter would trigger miserable situations that repeat
- * installation and removal of unwanted LSAs indefinitely.
- */
- for (node1 = listhead (lsas); node1; nextnode (node1))
- {
- if ((lsa = getdata (node1)) == NULL)
- continue;
- /* Filter out unwanted LSAs. */
- if (! IS_OPAQUE_LSA (lsa->data->type))
- continue;
- if (! IPV4_ADDR_SAME (&lsa->data->adv_router, &top->router_id))
- continue;
- /*
- * Don't touch an LSA which has MaxAge; two possible cases.
- *
- * 1) This LSA has originally flushed by myself (received LSUpd
- * message's router-id is equal to my router-id), and flooded
- * back by an opaque-capable router.
- *
- * 2) This LSA has expired in an opaque-capable router and thus
- * flushed by the router.
- */
- if (IS_LSA_MAXAGE (lsa))
- continue;
- /* If the LSA has installed in the LSDB, nothing to do here. */
- if (ospf_lsa_lookup_by_header (nbr->oi->area, lsa->data) != NULL)
- continue;
- /* Ok, here we go. */
- switch (lsa->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- oi = nbr->oi;
- ospf_opaque_exclude_lsa_from_lsreq (oi->nbrs, nbr, lsa);
- break;
- case OSPF_OPAQUE_AREA_LSA:
- area = nbr->oi->area;
- for (node2 = listhead (area->oiflist); node2; nextnode (node2))
- {
- if ((oi = getdata (node2)) == NULL)
- continue;
- ospf_opaque_exclude_lsa_from_lsreq (oi->nbrs, nbr, lsa);
- }
- break;
- case OSPF_OPAQUE_AS_LSA:
- for (node2 = listhead (top->oiflist); node2; nextnode (node2))
- {
- if ((oi = getdata (node2)) == NULL)
- continue;
- ospf_opaque_exclude_lsa_from_lsreq (oi->nbrs, nbr, lsa);
- }
- break;
- default:
- break;
- }
- }
- out:
- return;
- }
- static void
- ospf_opaque_exclude_lsa_from_lsreq (struct route_table *nbrs,
- struct ospf_neighbor *inbr,
- struct ospf_lsa *lsa)
- {
- struct route_node *rn;
- struct ospf_neighbor *onbr;
- struct ospf_lsa *ls_req;
- for (rn = route_top (nbrs); rn; rn = route_next (rn))
- {
- if ((onbr = rn->info) == NULL)
- continue;
- if (onbr == inbr)
- continue;
- if ((ls_req = ospf_ls_request_lookup (onbr, lsa)) == NULL)
- continue;
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("LSA[%s]: Exclude this entry from LSReq to send.", dump_lsa_key (lsa));
- ospf_ls_request_delete (onbr, ls_req);
- /* ospf_check_nbr_loading (onbr);*//* XXX */
- }
- return;
- }
- void
- ospf_opaque_self_originated_lsa_received (struct ospf_neighbor *nbr, list lsas)
- {
- struct ospf *top;
- listnode node, next;
- struct ospf_lsa *lsa;
- u_char before;
- if ((top = oi_to_top (nbr->oi)) == NULL)
- goto out;
- before = IS_OPAQUE_LSA_ORIGINATION_BLOCKED (top->opaque);
- for (node = listhead (lsas); node; node = next)
- {
- next = node->next;
- if ((lsa = getdata (node)) == NULL)
- continue;
- listnode_delete (lsas, lsa);
- /*
- * Since these LSA entries are not yet installed into corresponding
- * LSDB, just flush them without calling ospf_ls_maxage() afterward.
- */
- lsa->data->ls_age = htons (OSPF_LSA_MAXAGE);
- switch (lsa->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- SET_FLAG (top->opaque, OPAQUE_BLOCK_TYPE_09_LSA_BIT);
- ospf_flood_through_area (nbr->oi->area, NULL/*inbr*/, lsa);
- break;
- case OSPF_OPAQUE_AREA_LSA:
- SET_FLAG (top->opaque, OPAQUE_BLOCK_TYPE_10_LSA_BIT);
- ospf_flood_through_area (nbr->oi->area, NULL/*inbr*/, lsa);
- break;
- case OSPF_OPAQUE_AS_LSA:
- SET_FLAG (top->opaque, OPAQUE_BLOCK_TYPE_11_LSA_BIT);
- ospf_flood_through_as (top, NULL/*inbr*/, lsa);
- break;
- default:
- zlog_warn ("ospf_opaque_self_originated_lsa_received: Unexpected LSA-type(%u)", lsa->data->type);
- goto out;
- }
- ospf_lsa_discard (lsa); /* List "lsas" will be deleted by caller. */
- }
- if (before == 0 && IS_OPAQUE_LSA_ORIGINATION_BLOCKED (top->opaque))
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Block Opaque-LSA origination: OFF -> ON");
- }
- out:
- return;
- }
- void
- ospf_opaque_ls_ack_received (struct ospf_neighbor *nbr, list acks)
- {
- struct ospf *top;
- listnode node;
- struct ospf_lsa *lsa;
- char type9_lsa_rcv = 0, type10_lsa_rcv = 0, type11_lsa_rcv = 0;
- if ((top = oi_to_top (nbr->oi)) == NULL)
- goto out;
- for (node = listhead (acks); node; nextnode (node))
- {
- if ((lsa = getdata (node)) == NULL)
- continue;
- switch (lsa->data->type)
- {
- case OSPF_OPAQUE_LINK_LSA:
- type9_lsa_rcv = 1;
- /* Callback function... */
- break;
- case OSPF_OPAQUE_AREA_LSA:
- type10_lsa_rcv = 1;
- /* Callback function... */
- break;
- case OSPF_OPAQUE_AS_LSA:
- type11_lsa_rcv = 1;
- /* Callback function... */
- break;
- default:
- zlog_warn ("ospf_opaque_ls_ack_received: Unexpected LSA-type(%u)", lsa->data->type);
- goto out;
- }
- }
- if (IS_OPAQUE_LSA_ORIGINATION_BLOCKED (top->opaque))
- {
- int delay;
- struct ospf_interface *oi;
- if (type9_lsa_rcv
- && CHECK_FLAG (top->opaque, OPAQUE_BLOCK_TYPE_09_LSA_BIT))
- ospf_opaque_type9_lsa_rxmt_nbr_check (nbr->oi);
- if (type10_lsa_rcv
- && CHECK_FLAG (top->opaque, OPAQUE_BLOCK_TYPE_10_LSA_BIT))
- ospf_opaque_type10_lsa_rxmt_nbr_check (nbr->oi->area);
- if (type11_lsa_rcv
- && CHECK_FLAG (top->opaque, OPAQUE_BLOCK_TYPE_11_LSA_BIT))
- ospf_opaque_type11_lsa_rxmt_nbr_check (top);
- if (IS_OPAQUE_LSA_ORIGINATION_BLOCKED (top->opaque))
- goto out; /* Blocking still in progress. */
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Block Opaque-LSA origination: ON -> OFF");
- if (! CHECK_FLAG (top->config, OSPF_OPAQUE_CAPABLE))
- goto out; /* Opaque capability condition must have changed. */
- /* Ok, let's start origination of Opaque-LSAs. */
- delay = OSPF_MIN_LS_INTERVAL;
- for (node = listhead (top->oiflist); node; nextnode (node))
- {
- if ((oi = getdata (node)) == NULL)
- continue;
- if (! ospf_if_is_enable (oi)
- || ospf_nbr_count_opaque_capable (oi) == 0)
- continue;
- ospf_opaque_lsa_originate_schedule (oi, &delay);
- }
- }
- out:
- return;
- }
- static void
- ospf_opaque_type9_lsa_rxmt_nbr_check (struct ospf_interface *oi)
- {
- unsigned long n;
- n = ospf_opaque_nrxmt_self (oi->nbrs, OSPF_OPAQUE_LINK_LSA);
- if (n == 0)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Self-originated type-9 Opaque-LSAs: OI(%s): Flush completed", IF_NAME (oi));
- UNSET_FLAG (oi->area->ospf->opaque, OPAQUE_BLOCK_TYPE_09_LSA_BIT);
- }
- return;
- }
- static void
- ospf_opaque_type10_lsa_rxmt_nbr_check (struct ospf_area *area)
- {
- listnode node;
- struct ospf_interface *oi;
- unsigned long n = 0;
- for (node = listhead (area->oiflist); node; nextnode (node))
- {
- if ((oi = getdata (node)) == NULL)
- continue;
- if (area->area_id.s_addr != OSPF_AREA_BACKBONE
- && oi->type == OSPF_IFTYPE_VIRTUALLINK)
- continue;
- n = ospf_opaque_nrxmt_self (oi->nbrs, OSPF_OPAQUE_AREA_LSA);
- if (n > 0)
- break;
- }
- if (n == 0)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Self-originated type-10 Opaque-LSAs: AREA(%s): Flush completed", inet_ntoa (area->area_id));
- UNSET_FLAG (area->ospf->opaque, OPAQUE_BLOCK_TYPE_10_LSA_BIT);
- }
- return;
- }
- static void
- ospf_opaque_type11_lsa_rxmt_nbr_check (struct ospf *top)
- {
- listnode node;
- struct ospf_interface *oi;
- unsigned long n = 0;
- for (node = listhead (top->oiflist); node; nextnode (node))
- {
- if ((oi = getdata (node)) == NULL)
- continue;
- switch (oi->type)
- {
- case OSPF_IFTYPE_VIRTUALLINK:
- continue;
- default:
- break;
- }
- n = ospf_opaque_nrxmt_self (oi->nbrs, OSPF_OPAQUE_AS_LSA);
- if (n > 0)
- goto out;
- }
- if (n == 0)
- {
- if (IS_DEBUG_OSPF_EVENT)
- zlog_info ("Self-originated type-11 Opaque-LSAs: Flush completed");
- UNSET_FLAG (top->opaque, OPAQUE_BLOCK_TYPE_11_LSA_BIT);
- }
- out:
- return;
- }
- static unsigned long
- ospf_opaque_nrxmt_self (struct route_table *nbrs, int lsa_type)
- {
- struct route_node *rn;
- struct ospf_neighbor *nbr;
- struct ospf *top;
- unsigned long n = 0;
- for (rn = route_top (nbrs); rn; rn = route_next (rn))
- {
- if ((nbr = rn->info) == NULL)
- continue;
- if ((top = oi_to_top (nbr->oi)) == NULL)
- continue;
- if (IPV4_ADDR_SAME (&nbr->router_id, &top->router_id))
- continue;
- n += ospf_ls_retransmit_count_self (nbr, lsa_type);
- }
- return n;
- }
- /*------------------------------------------------------------------------*
- * Followings are util functions; probably be used by Opaque-LSAs only...
- *------------------------------------------------------------------------*/
- void
- htonf (float *src, float *dst)
- {
- u_int32_t lu1, lu2;
- memcpy (&lu1, src, sizeof (u_int32_t));
- lu2 = htonl (lu1);
- memcpy (dst, &lu2, sizeof (u_int32_t));
- return;
- }
- void
- ntohf (float *src, float *dst)
- {
- u_int32_t lu1, lu2;
- memcpy (&lu1, src, sizeof (u_int32_t));
- lu2 = ntohl (lu1);
- memcpy (dst, &lu2, sizeof (u_int32_t));
- return;
- }
- struct ospf *
- oi_to_top (struct ospf_interface *oi)
- {
- struct ospf *top = NULL;
- struct ospf_area *area;
- if (oi == NULL || (area = oi->area) == NULL || (top = area->ospf) == NULL)
- zlog_warn ("Broken relationship for "OI -> AREA -> OSPF"?");
- return top;
- }
- #endif /* HAVE_OPAQUE_LSA */