ospf6_lsa.c
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上传日期:2009-11-15
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文件大小:26k
- /*
- * Copyright (C) 2003 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 <zebra.h>
- /* Include other stuffs */
- #include "log.h"
- #include "linklist.h"
- #include "vector.h"
- #include "vty.h"
- #include "command.h"
- #include "memory.h"
- #include "thread.h"
- #include "ospf6_proto.h"
- #include "ospf6_lsa.h"
- #include "ospf6_lsdb.h"
- #include "ospf6_message.h"
- #include "ospf6_top.h"
- #include "ospf6_area.h"
- #include "ospf6_interface.h"
- #include "ospf6_neighbor.h"
- #include "ospf6_flood.h"
- #include "ospf6d.h"
- vector ospf6_lsa_handler_vector;
- int
- ospf6_unknown_lsa_show (struct vty *vty, struct ospf6_lsa *lsa)
- {
- u_char *start, *end, *current;
- char byte[4];
- start = (u_char *) lsa->header + sizeof (struct ospf6_lsa_header);
- end = (u_char *) lsa->header + ntohs (lsa->header->length);
- vty_out (vty, " Unknown contents:%s", VNL);
- for (current = start; current < end; current ++)
- {
- if ((current - start) % 16 == 0)
- vty_out (vty, "%s ", VNL);
- else if ((current - start) % 4 == 0)
- vty_out (vty, " ");
- snprintf (byte, sizeof (byte), "%02x", *current);
- vty_out (vty, "%s", byte);
- }
- vty_out (vty, "%s%s", VNL, VNL);
- return 0;
- }
- struct ospf6_lsa_handler unknown_handler =
- {
- OSPF6_LSTYPE_UNKNOWN,
- "Unknown",
- ospf6_unknown_lsa_show,
- OSPF6_LSA_DEBUG,
- };
- void
- ospf6_install_lsa_handler (struct ospf6_lsa_handler *handler)
- {
- /* type in handler is host byte order */
- int index = handler->type & OSPF6_LSTYPE_FCODE_MASK;
- vector_set_index (ospf6_lsa_handler_vector, index, handler);
- }
- struct ospf6_lsa_handler *
- ospf6_get_lsa_handler (u_int16_t type)
- {
- struct ospf6_lsa_handler *handler = NULL;
- int index = ntohs (type) & OSPF6_LSTYPE_FCODE_MASK;
- if (ospf6_lsa_handler_vector &&
- index < vector_max (ospf6_lsa_handler_vector))
- handler = vector_slot (ospf6_lsa_handler_vector, index);
- else
- handler = &unknown_handler;
- if (handler == NULL)
- handler = &unknown_handler;
- return handler;
- }
- char *
- ospf6_lstype_name (u_int16_t type)
- {
- static char buf[8];
- struct ospf6_lsa_handler *handler;
- handler = ospf6_get_lsa_handler (type);
- if (handler && handler != &unknown_handler)
- return handler->name;
- snprintf (buf, sizeof (buf), "0x%04hx", ntohs (type));
- return buf;
- }
- u_char
- ospf6_lstype_debug (u_int16_t type)
- {
- struct ospf6_lsa_handler *handler;
- handler = ospf6_get_lsa_handler (type);
- return handler->debug;
- }
- /* RFC2328: Section 13.2 */
- int
- ospf6_lsa_is_differ (struct ospf6_lsa *lsa1,
- struct ospf6_lsa *lsa2)
- {
- int len;
- assert (OSPF6_LSA_IS_SAME (lsa1, lsa2));
- /* XXX, Options ??? */
- ospf6_lsa_age_current (lsa1);
- ospf6_lsa_age_current (lsa2);
- if (ntohs (lsa1->header->age) == MAXAGE &&
- ntohs (lsa2->header->age) != MAXAGE)
- return 1;
- if (ntohs (lsa1->header->age) != MAXAGE &&
- ntohs (lsa2->header->age) == MAXAGE)
- return 1;
- /* compare body */
- if (ntohs (lsa1->header->length) != ntohs (lsa2->header->length))
- return 1;
- len = ntohs (lsa1->header->length) - sizeof (struct ospf6_lsa_header);
- return memcmp (lsa1->header + 1, lsa2->header + 1, len);
- }
- int
- ospf6_lsa_is_changed (struct ospf6_lsa *lsa1,
- struct ospf6_lsa *lsa2)
- {
- int length;
- if (OSPF6_LSA_IS_MAXAGE (lsa1) ^ OSPF6_LSA_IS_MAXAGE (lsa2))
- return 1;
- if (ntohs (lsa1->header->length) != ntohs (lsa2->header->length))
- return 1;
- length = OSPF6_LSA_SIZE (lsa1->header) - sizeof (struct ospf6_lsa_header);
- assert (length > 0);
- return memcmp (OSPF6_LSA_HEADER_END (lsa1->header),
- OSPF6_LSA_HEADER_END (lsa2->header), length);
- }
- /* ospf6 age functions */
- /* calculate birth */
- static void
- ospf6_lsa_age_set (struct ospf6_lsa *lsa)
- {
- struct timeval now;
- assert (lsa && lsa->header);
- if (gettimeofday (&now, (struct timezone *)NULL) < 0)
- zlog_warn ("LSA: gettimeofday failed, may fail LSA AGEs: %s",
- strerror (errno));
- lsa->birth.tv_sec = now.tv_sec - ntohs (lsa->header->age);
- lsa->birth.tv_usec = now.tv_usec;
- return;
- }
- /* this function calculates current age from its birth,
- then update age field of LSA header. return value is current age */
- u_int16_t
- ospf6_lsa_age_current (struct ospf6_lsa *lsa)
- {
- struct timeval now;
- u_int32_t ulage;
- u_int16_t age;
- assert (lsa);
- assert (lsa->header);
- /* current time */
- if (gettimeofday (&now, (struct timezone *)NULL) < 0)
- zlog_warn ("LSA: gettimeofday failed, may fail LSA AGEs: %s",
- strerror (errno));
- /* calculate age */
- ulage = now.tv_sec - lsa->birth.tv_sec;
- /* if over MAXAGE, set to it */
- age = (ulage > MAXAGE ? MAXAGE : ulage);
- lsa->header->age = htons (age);
- return age;
- }
- /* update age field of LSA header with adding InfTransDelay */
- void
- ospf6_lsa_age_update_to_send (struct ospf6_lsa *lsa, u_int32_t transdelay)
- {
- unsigned short age;
- age = ospf6_lsa_age_current (lsa) + transdelay;
- if (age > MAXAGE)
- age = MAXAGE;
- lsa->header->age = htons (age);
- }
- void
- ospf6_lsa_premature_aging (struct ospf6_lsa *lsa)
- {
- /* log */
- if (IS_OSPF6_DEBUG_LSA_TYPE (lsa->header->type))
- zlog_info ("LSA: Premature aging: %s", lsa->name);
- THREAD_OFF (lsa->expire);
- THREAD_OFF (lsa->refresh);
- memset (&lsa->birth, 0, sizeof (struct timeval));
- thread_execute (master, ospf6_lsa_expire, lsa, 0);
- }
- /* check which is more recent. if a is more recent, return -1;
- if the same, return 0; otherwise(b is more recent), return 1 */
- int
- ospf6_lsa_compare (struct ospf6_lsa *a, struct ospf6_lsa *b)
- {
- signed long seqnuma, seqnumb;
- u_int16_t cksuma, cksumb;
- u_int16_t agea, ageb;
- assert (a && a->header);
- assert (b && b->header);
- assert (OSPF6_LSA_IS_SAME (a, b));
- seqnuma = ((signed long) ntohl (a->header->seqnum))
- - (signed long) INITIAL_SEQUENCE_NUMBER;
- seqnumb = ((signed long) ntohl (b->header->seqnum))
- - (signed long) INITIAL_SEQUENCE_NUMBER;
- /* compare by sequence number */
- /* XXX, LS sequence number wrapping */
- if (seqnuma > seqnumb)
- return -1;
- else if (seqnuma < seqnumb)
- return 1;
- /* Checksum */
- cksuma = ntohs (a->header->checksum);
- cksumb = ntohs (b->header->checksum);
- if (cksuma > cksumb)
- return -1;
- if (cksuma < cksumb)
- return 0;
- /* Update Age */
- agea = ospf6_lsa_age_current (a);
- ageb = ospf6_lsa_age_current (b);
- /* MaxAge check */
- if (agea == MAXAGE && ageb != MAXAGE)
- return -1;
- else if (agea != MAXAGE && ageb == MAXAGE)
- return 1;
- /* Age check */
- if (agea > ageb && agea - ageb >= MAX_AGE_DIFF)
- return 1;
- else if (agea < ageb && ageb - agea >= MAX_AGE_DIFF)
- return -1;
- /* neither recent */
- return 0;
- }
- char *
- ospf6_lsa_printbuf (struct ospf6_lsa *lsa, char *buf, int size)
- {
- char id[16], adv_router[16];
- inet_ntop (AF_INET, &lsa->header->id, id, sizeof (id));
- inet_ntop (AF_INET, &lsa->header->adv_router, adv_router,
- sizeof (adv_router));
- snprintf (buf, size, "[%s Id:%s Adv:%s]",
- ospf6_lstype_name (lsa->header->type), id, adv_router);
- return buf;
- }
- void
- ospf6_lsa_header_print_raw (struct ospf6_lsa_header *header)
- {
- char id[16], adv_router[16];
- inet_ntop (AF_INET, &header->id, id, sizeof (id));
- inet_ntop (AF_INET, &header->adv_router, adv_router,
- sizeof (adv_router));
- zlog_info (" [%s Id:%s Adv:%s]",
- ospf6_lstype_name (header->type), id, adv_router);
- zlog_info (" Age: %4hu SeqNum: %#08lx Cksum: %04hx Len: %d",
- ntohs (header->age), (u_long) ntohl (header->seqnum),
- ntohs (header->checksum), ntohs (header->length));
- }
- void
- ospf6_lsa_header_print (struct ospf6_lsa *lsa)
- {
- ospf6_lsa_age_current (lsa);
- ospf6_lsa_header_print_raw (lsa->header);
- }
- void
- ospf6_lsa_show_summary_header (struct vty *vty)
- {
- vty_out (vty, "%-12s %-15s %-15s %4s %8s %4s %4s %-8s%s",
- "Type", "LSId", "AdvRouter", "Age", "SeqNum",
- "Cksm", "Len", "Duration", VNL);
- }
- void
- ospf6_lsa_show_summary (struct vty *vty, struct ospf6_lsa *lsa)
- {
- char adv_router[16], id[16];
- struct timeval now, res;
- char duration[16];
- assert (lsa);
- assert (lsa->header);
- inet_ntop (AF_INET, &lsa->header->id, id, sizeof (id));
- inet_ntop (AF_INET, &lsa->header->adv_router, adv_router,
- sizeof (adv_router));
- gettimeofday (&now, NULL);
- timersub (&now, &lsa->installed, &res);
- timerstring (&res, duration, sizeof (duration));
- vty_out (vty, "%-12s %-15s %-15s %4hu %8lx %04hx %4hu %8s%s",
- ospf6_lstype_name (lsa->header->type),
- id, adv_router, ospf6_lsa_age_current (lsa),
- (u_long) ntohl (lsa->header->seqnum),
- ntohs (lsa->header->checksum), ntohs (lsa->header->length),
- duration, VNL);
- }
- void
- ospf6_lsa_show_dump (struct vty *vty, struct ospf6_lsa *lsa)
- {
- u_char *start, *end, *current;
- char byte[4];
- start = (u_char *) lsa->header;
- end = (u_char *) lsa->header + ntohs (lsa->header->length);
- vty_out (vty, "%s", VNL);
- vty_out (vty, "%s:%s", lsa->name, VNL);
- for (current = start; current < end; current ++)
- {
- if ((current - start) % 16 == 0)
- vty_out (vty, "%s ", VNL);
- else if ((current - start) % 4 == 0)
- vty_out (vty, " ");
- snprintf (byte, sizeof (byte), "%02x", *current);
- vty_out (vty, "%s", byte);
- }
- vty_out (vty, "%s%s", VNL, VNL);
- return;
- }
- void
- ospf6_lsa_show_internal (struct vty *vty, struct ospf6_lsa *lsa)
- {
- char adv_router[64], id[64];
- assert (lsa && lsa->header);
- inet_ntop (AF_INET, &lsa->header->id, id, sizeof (id));
- inet_ntop (AF_INET, &lsa->header->adv_router,
- adv_router, sizeof (adv_router));
- vty_out (vty, "%s", VNL);
- vty_out (vty, "Age: %4hu Type: %s%s", ospf6_lsa_age_current (lsa),
- ospf6_lstype_name (lsa->header->type), VNL);
- vty_out (vty, "Link State ID: %s%s", id, VNL);
- vty_out (vty, "Advertising Router: %s%s", adv_router, VNL);
- vty_out (vty, "LS Sequence Number: %#010lx%s",
- (u_long) ntohl (lsa->header->seqnum), VNL);
- vty_out (vty, "CheckSum: %#06hx Length: %hu%s",
- ntohs (lsa->header->checksum),
- ntohs (lsa->header->length), VNL);
- vty_out (vty, " Prev: %p This: %p Next: %p%s",
- lsa->prev, lsa, lsa->next, VNL);
- vty_out (vty, "%s", VNL);
- return;
- }
- void
- ospf6_lsa_show (struct vty *vty, struct ospf6_lsa *lsa)
- {
- char adv_router[64], id[64];
- struct ospf6_lsa_handler *handler;
- assert (lsa && lsa->header);
- inet_ntop (AF_INET, &lsa->header->id, id, sizeof (id));
- inet_ntop (AF_INET, &lsa->header->adv_router,
- adv_router, sizeof (adv_router));
- vty_out (vty, "Age: %4hu Type: %s%s", ospf6_lsa_age_current (lsa),
- ospf6_lstype_name (lsa->header->type), VNL);
- vty_out (vty, "Link State ID: %s%s", id, VNL);
- vty_out (vty, "Advertising Router: %s%s", adv_router, VNL);
- vty_out (vty, "LS Sequence Number: %#010lx%s",
- (u_long) ntohl (lsa->header->seqnum), VNL);
- vty_out (vty, "CheckSum: %#06hx Length: %hu%s",
- ntohs (lsa->header->checksum),
- ntohs (lsa->header->length), VNL);
- handler = ospf6_get_lsa_handler (lsa->header->type);
- if (handler->show == NULL)
- handler = &unknown_handler;
- (*handler->show) (vty, lsa);
- vty_out (vty, "%s", VNL);
- }
- /* OSPFv3 LSA creation/deletion function */
- struct ospf6_lsa *
- ospf6_lsa_create (struct ospf6_lsa_header *header)
- {
- struct ospf6_lsa *lsa = NULL;
- struct ospf6_lsa_header *new_header = NULL;
- u_int16_t lsa_size = 0;
- /* size of the entire LSA */
- lsa_size = ntohs (header->length); /* XXX vulnerable */
- /* allocate memory for this LSA */
- new_header = (struct ospf6_lsa_header *)
- XMALLOC (MTYPE_OSPF6_LSA, lsa_size);
- /* copy LSA from original header */
- memcpy (new_header, header, lsa_size);
- /* LSA information structure */
- /* allocate memory */
- lsa = (struct ospf6_lsa *)
- XMALLOC (MTYPE_OSPF6_LSA, sizeof (struct ospf6_lsa));
- memset (lsa, 0, sizeof (struct ospf6_lsa));
- lsa->header = (struct ospf6_lsa_header *) new_header;
- /* dump string */
- ospf6_lsa_printbuf (lsa, lsa->name, sizeof (lsa->name));
- /* calculate birth of this lsa */
- ospf6_lsa_age_set (lsa);
- return lsa;
- }
- struct ospf6_lsa *
- ospf6_lsa_create_headeronly (struct ospf6_lsa_header *header)
- {
- struct ospf6_lsa *lsa = NULL;
- struct ospf6_lsa_header *new_header = NULL;
- /* allocate memory for this LSA */
- new_header = (struct ospf6_lsa_header *)
- XMALLOC (MTYPE_OSPF6_LSA, sizeof (struct ospf6_lsa_header));
- /* copy LSA from original header */
- memcpy (new_header, header, sizeof (struct ospf6_lsa_header));
- /* LSA information structure */
- /* allocate memory */
- lsa = (struct ospf6_lsa *)
- XMALLOC (MTYPE_OSPF6_LSA, sizeof (struct ospf6_lsa));
- memset (lsa, 0, sizeof (struct ospf6_lsa));
- lsa->header = (struct ospf6_lsa_header *) new_header;
- SET_FLAG (lsa->flag, OSPF6_LSA_HEADERONLY);
- /* dump string */
- ospf6_lsa_printbuf (lsa, lsa->name, sizeof (lsa->name));
- /* calculate birth of this lsa */
- ospf6_lsa_age_set (lsa);
- return lsa;
- }
- void
- ospf6_lsa_delete (struct ospf6_lsa *lsa)
- {
- assert (lsa->lock == 0);
- /* cancel threads */
- THREAD_OFF (lsa->expire);
- THREAD_OFF (lsa->refresh);
- /* do free */
- XFREE (MTYPE_OSPF6_LSA, lsa->header);
- XFREE (MTYPE_OSPF6_LSA, lsa);
- }
- struct ospf6_lsa *
- ospf6_lsa_copy (struct ospf6_lsa *lsa)
- {
- struct ospf6_lsa *copy = NULL;
- ospf6_lsa_age_current (lsa);
- if (CHECK_FLAG (lsa->flag, OSPF6_LSA_HEADERONLY))
- copy = ospf6_lsa_create_headeronly (lsa->header);
- else
- copy = ospf6_lsa_create (lsa->header);
- assert (copy->lock == 0);
- copy->birth = lsa->birth;
- copy->originated = lsa->originated;
- copy->received = lsa->received;
- copy->installed = lsa->installed;
- copy->lsdb = lsa->lsdb;
- return copy;
- }
- /* increment reference counter of struct ospf6_lsa */
- void
- ospf6_lsa_lock (struct ospf6_lsa *lsa)
- {
- lsa->lock++;
- return;
- }
- /* decrement reference counter of struct ospf6_lsa */
- void
- ospf6_lsa_unlock (struct ospf6_lsa *lsa)
- {
- /* decrement reference counter */
- assert (lsa->lock > 0);
- lsa->lock--;
- if (lsa->lock != 0)
- return;
- ospf6_lsa_delete (lsa);
- }
- /* ospf6 lsa expiry */
- int
- ospf6_lsa_expire (struct thread *thread)
- {
- struct ospf6_lsa *lsa;
- lsa = (struct ospf6_lsa *) THREAD_ARG (thread);
- assert (lsa && lsa->header);
- assert (OSPF6_LSA_IS_MAXAGE (lsa));
- assert (! lsa->refresh);
- lsa->expire = (struct thread *) NULL;
- if (IS_OSPF6_DEBUG_LSA_TYPE (lsa->header->type))
- {
- zlog_info ("LSA Expire:");
- ospf6_lsa_header_print (lsa);
- }
- if (CHECK_FLAG (lsa->flag, OSPF6_LSA_HEADERONLY))
- return 0; /* dbexchange will do something ... */
- /* reflood lsa */
- ospf6_flood (NULL, lsa);
- /* reinstall lsa */
- ospf6_install_lsa (lsa);
- /* schedule maxage remover */
- ospf6_maxage_remove (ospf6);
- return 0;
- }
- int
- ospf6_lsa_refresh (struct thread *thread)
- {
- struct ospf6_lsa *old, *self, *new;
- struct ospf6_lsdb *lsdb_self;
- assert (thread);
- old = (struct ospf6_lsa *) THREAD_ARG (thread);
- assert (old && old->header);
- old->refresh = (struct thread *) NULL;
- lsdb_self = ospf6_get_scoped_lsdb_self (old);
- self = ospf6_lsdb_lookup (old->header->type, old->header->id,
- old->header->adv_router, lsdb_self);
- if (self == NULL)
- {
- if (IS_OSPF6_DEBUG_LSA_TYPE (old->header->type))
- zlog_info ("Refresh: could not find self LSA, flush %s", old->name);
- ospf6_lsa_premature_aging (old);
- return 0;
- }
- /* Reset age, increment LS sequence number. */
- self->header->age = htons (0);
- self->header->seqnum =
- ospf6_new_ls_seqnum (self->header->type, self->header->id,
- self->header->adv_router, old->lsdb);
- ospf6_lsa_checksum (self->header);
- new = ospf6_lsa_create (self->header);
- new->lsdb = old->lsdb;
- new->refresh = thread_add_timer (master, ospf6_lsa_refresh, new,
- LS_REFRESH_TIME);
- /* store it in the LSDB for self-originated LSAs */
- ospf6_lsdb_add (ospf6_lsa_copy (new), lsdb_self);
- if (IS_OSPF6_DEBUG_LSA_TYPE (new->header->type))
- {
- zlog_info ("LSA Refresh:");
- ospf6_lsa_header_print (new);
- }
- ospf6_flood_clear (old);
- ospf6_flood (NULL, new);
- ospf6_install_lsa (new);
- return 0;
- }
- /* enhanced Fletcher checksum algorithm, RFC1008 7.2 */
- #define MODX 4102
- #define LSA_CHECKSUM_OFFSET 15
- unsigned short
- ospf6_lsa_checksum (struct ospf6_lsa_header *lsa_header)
- {
- u_char *sp, *ep, *p, *q;
- int c0 = 0, c1 = 0;
- int x, y;
- u_int16_t length;
- lsa_header->checksum = 0;
- length = ntohs (lsa_header->length) - 2;
- sp = (u_char *) &lsa_header->type;
- for (ep = sp + length; sp < ep; sp = q)
- {
- q = sp + MODX;
- if (q > ep)
- q = ep;
- for (p = sp; p < q; p++)
- {
- c0 += *p;
- c1 += c0;
- }
- c0 %= 255;
- c1 %= 255;
- }
- /* r = (c1 << 8) + c0; */
- x = ((length - LSA_CHECKSUM_OFFSET) * c0 - c1) % 255;
- if (x <= 0)
- x += 255;
- y = 510 - c0 - x;
- if (y > 255)
- y -= 255;
- lsa_header->checksum = htons ((x << 8) + y);
- return (lsa_header->checksum);
- }
- void
- ospf6_lsa_init ()
- {
- ospf6_lsa_handler_vector = vector_init (0);
- ospf6_install_lsa_handler (&unknown_handler);
- }
- char *
- ospf6_lsa_handler_name (struct ospf6_lsa_handler *h)
- {
- static char buf[64];
- int i, size = strlen (h->name);
- if (h->name == "Unknown" &&
- h->type != OSPF6_LSTYPE_UNKNOWN)
- {
- snprintf (buf, sizeof (buf), "%#04hx", h->type);
- return buf;
- }
- for (i = 0; i < MIN (size, sizeof (buf)); i++)
- {
- if (! islower (h->name[i]))
- buf[i] = tolower (h->name[i]);
- else
- buf[i] = h->name[i];
- }
- buf[size] = ' ';
- return buf;
- }
- DEFUN (debug_ospf6_lsa_type,
- debug_ospf6_lsa_hex_cmd,
- "debug ospf6 lsa XXXX/0xXXXX",
- DEBUG_STR
- OSPF6_STR
- "Debug Link State Advertisements (LSAs)n"
- "Specify LS type as Hexadecimaln"
- )
- {
- int i;
- struct ospf6_lsa_handler *handler = NULL;
- unsigned long val;
- char *endptr = NULL;
- u_int16_t type = 0;
- assert (argc);
- if ((strlen (argv[0]) == 6 && ! strncmp (argv[0], "0x", 2)) ||
- (strlen (argv[0]) == 4))
- {
- val = strtoul (argv[0], &endptr, 16);
- if (*endptr == ' ')
- type = val;
- }
- for (i = 0; i < vector_max (ospf6_lsa_handler_vector); i++)
- {
- handler = vector_slot (ospf6_lsa_handler_vector, i);
- if (handler == NULL)
- continue;
- if (type && handler->type == type)
- break;
- if (! strcasecmp (argv[0], handler->name))
- break;
- handler = NULL;
- }
- if (type && handler == NULL)
- {
- handler = (struct ospf6_lsa_handler *)
- malloc (sizeof (struct ospf6_lsa_handler));
- memset (handler, 0, sizeof (struct ospf6_lsa_handler));
- handler->type = type;
- handler->name = "Unknown";
- handler->show = ospf6_unknown_lsa_show;
- vector_set_index (ospf6_lsa_handler_vector,
- handler->type & OSPF6_LSTYPE_FCODE_MASK, handler);
- }
- if (handler == NULL)
- handler = &unknown_handler;
- if (argc >= 2)
- {
- if (! strcmp (argv[1], "originate"))
- SET_FLAG (handler->debug, OSPF6_LSA_DEBUG_ORIGINATE);
- if (! strcmp (argv[1], "examin"))
- SET_FLAG (handler->debug, OSPF6_LSA_DEBUG_EXAMIN);
- if (! strcmp (argv[1], "flooding"))
- SET_FLAG (handler->debug, OSPF6_LSA_DEBUG_FLOOD);
- }
- else
- SET_FLAG (handler->debug, OSPF6_LSA_DEBUG);
- return CMD_SUCCESS;
- }
- DEFUN (no_debug_ospf6_lsa_type,
- no_debug_ospf6_lsa_hex_cmd,
- "no debug ospf6 lsa XXXX/0xXXXX",
- NO_STR
- DEBUG_STR
- OSPF6_STR
- "Debug Link State Advertisements (LSAs)n"
- "Specify LS type as Hexadecimaln"
- )
- {
- int i;
- struct ospf6_lsa_handler *handler = NULL;
- unsigned long val;
- char *endptr = NULL;
- u_int16_t type = 0;
- assert (argc);
- if ((strlen (argv[0]) == 6 && ! strncmp (argv[0], "0x", 2)) ||
- (strlen (argv[0]) == 4))
- {
- val = strtoul (argv[0], &endptr, 16);
- if (*endptr == ' ')
- type = val;
- }
- for (i = 0; i < vector_max (ospf6_lsa_handler_vector); i++)
- {
- handler = vector_slot (ospf6_lsa_handler_vector, i);
- if (handler == NULL)
- continue;
- if (type && handler->type == type)
- break;
- if (! strcasecmp (argv[0], handler->name))
- break;
- }
- if (handler == NULL)
- return CMD_SUCCESS;
- if (argc >= 2)
- {
- if (! strcmp (argv[1], "originate"))
- UNSET_FLAG (handler->debug, OSPF6_LSA_DEBUG_ORIGINATE);
- if (! strcmp (argv[1], "examin"))
- UNSET_FLAG (handler->debug, OSPF6_LSA_DEBUG_EXAMIN);
- if (! strcmp (argv[1], "flooding"))
- UNSET_FLAG (handler->debug, OSPF6_LSA_DEBUG_FLOOD);
- }
- else
- UNSET_FLAG (handler->debug, OSPF6_LSA_DEBUG);
- if (handler->debug == 0 &&
- handler->name == "Unknown" && type != OSPF6_LSTYPE_UNKNOWN)
- {
- free (handler);
- vector_slot (ospf6_lsa_handler_vector, i) = NULL;
- }
- return CMD_SUCCESS;
- }
- struct cmd_element debug_ospf6_lsa_type_cmd;
- struct cmd_element debug_ospf6_lsa_type_detail_cmd;
- struct cmd_element no_debug_ospf6_lsa_type_cmd;
- struct cmd_element no_debug_ospf6_lsa_type_detail_cmd;
- void
- install_element_ospf6_debug_lsa ()
- {
- int i;
- struct ospf6_lsa_handler *handler;
- #define STRSIZE 256
- #define DOCSIZE 1024
- static char strbuf[STRSIZE];
- static char docbuf[DOCSIZE];
- static char detail_strbuf[STRSIZE];
- static char detail_docbuf[DOCSIZE];
- char *str, *no_str;
- char *doc, *no_doc;
- strbuf[0] = ' ';
- no_str = &strbuf[strlen (strbuf)];
- strncat (strbuf, "no ", STRSIZE - strlen (strbuf));
- str = &strbuf[strlen (strbuf)];
- strncat (strbuf, "debug ospf6 lsa (", STRSIZE - strlen (strbuf));
- for (i = 0; i < vector_max (ospf6_lsa_handler_vector); i++)
- {
- handler = vector_slot (ospf6_lsa_handler_vector, i);
- if (handler == NULL)
- continue;
- strncat (strbuf, ospf6_lsa_handler_name (handler),
- STRSIZE - strlen (strbuf));
- strncat (strbuf, "|", STRSIZE - strlen (strbuf));
- }
- strbuf[strlen (strbuf) - 1] = ')';
- strbuf[strlen (strbuf)] = ' ';
- docbuf[0] = ' ';
- no_doc = &docbuf[strlen (docbuf)];
- strncat (docbuf, NO_STR, DOCSIZE - strlen (docbuf));
- doc = &docbuf[strlen (docbuf)];
- strncat (docbuf, DEBUG_STR, DOCSIZE - strlen (docbuf));
- strncat (docbuf, OSPF6_STR, DOCSIZE - strlen (docbuf));
- strncat (docbuf, "Debug Link State Advertisements (LSAs)n",
- DOCSIZE - strlen (docbuf));
- for (i = 0; i < vector_max (ospf6_lsa_handler_vector); i++)
- {
- handler = vector_slot (ospf6_lsa_handler_vector, i);
- if (handler == NULL)
- continue;
- strncat (docbuf, "Debug ", DOCSIZE - strlen (docbuf));
- strncat (docbuf, handler->name, DOCSIZE - strlen (docbuf));
- strncat (docbuf, "-LSAn", DOCSIZE - strlen (docbuf));
- }
- docbuf[strlen (docbuf)] = ' ';
- debug_ospf6_lsa_type_cmd.string = str;
- debug_ospf6_lsa_type_cmd.func = debug_ospf6_lsa_type;
- debug_ospf6_lsa_type_cmd.doc = doc;
- no_debug_ospf6_lsa_type_cmd.string = no_str;
- no_debug_ospf6_lsa_type_cmd.func = no_debug_ospf6_lsa_type;
- no_debug_ospf6_lsa_type_cmd.doc = no_doc;
- strncpy (detail_strbuf, strbuf, STRSIZE);
- strncat (detail_strbuf, " (originate|examin|flooding)",
- STRSIZE - strlen (detail_strbuf));
- detail_strbuf[strlen (detail_strbuf)] = ' ';
- no_str = &detail_strbuf[0];
- str = &detail_strbuf[strlen ("no ")];
- strncpy (detail_docbuf, docbuf, DOCSIZE);
- strncat (detail_docbuf, "Debug Originating LSAn",
- DOCSIZE - strlen (detail_docbuf));
- strncat (detail_docbuf, "Debug Examining LSAn",
- DOCSIZE - strlen (detail_docbuf));
- strncat (detail_docbuf, "Debug Flooding LSAn",
- DOCSIZE - strlen (detail_docbuf));
- detail_docbuf[strlen (detail_docbuf)] = ' ';
- no_doc = &detail_docbuf[0];
- doc = &detail_docbuf[strlen (NO_STR)];
- debug_ospf6_lsa_type_detail_cmd.string = str;
- debug_ospf6_lsa_type_detail_cmd.func = debug_ospf6_lsa_type;
- debug_ospf6_lsa_type_detail_cmd.doc = doc;
- no_debug_ospf6_lsa_type_detail_cmd.string = no_str;
- no_debug_ospf6_lsa_type_detail_cmd.func = no_debug_ospf6_lsa_type;
- no_debug_ospf6_lsa_type_detail_cmd.doc = no_doc;
- install_element (ENABLE_NODE, &debug_ospf6_lsa_hex_cmd);
- install_element (ENABLE_NODE, &debug_ospf6_lsa_type_cmd);
- install_element (ENABLE_NODE, &debug_ospf6_lsa_type_detail_cmd);
- install_element (ENABLE_NODE, &no_debug_ospf6_lsa_hex_cmd);
- install_element (ENABLE_NODE, &no_debug_ospf6_lsa_type_cmd);
- install_element (ENABLE_NODE, &no_debug_ospf6_lsa_type_detail_cmd);
- install_element (CONFIG_NODE, &debug_ospf6_lsa_hex_cmd);
- install_element (CONFIG_NODE, &debug_ospf6_lsa_type_cmd);
- install_element (CONFIG_NODE, &debug_ospf6_lsa_type_detail_cmd);
- install_element (CONFIG_NODE, &no_debug_ospf6_lsa_hex_cmd);
- install_element (CONFIG_NODE, &no_debug_ospf6_lsa_type_cmd);
- install_element (CONFIG_NODE, &no_debug_ospf6_lsa_type_detail_cmd);
- }
- int
- config_write_ospf6_debug_lsa (struct vty *vty)
- {
- int i;
- struct ospf6_lsa_handler *handler;
- for (i = 0; i < vector_max (ospf6_lsa_handler_vector); i++)
- {
- handler = vector_slot (ospf6_lsa_handler_vector, i);
- if (handler == NULL)
- continue;
- if (CHECK_FLAG (handler->debug, OSPF6_LSA_DEBUG))
- vty_out (vty, "debug ospf6 lsa %s%s",
- ospf6_lsa_handler_name (handler), VNL);
- if (CHECK_FLAG (handler->debug, OSPF6_LSA_DEBUG_ORIGINATE))
- vty_out (vty, "debug ospf6 lsa %s originate%s",
- ospf6_lsa_handler_name (handler), VNL);
- if (CHECK_FLAG (handler->debug, OSPF6_LSA_DEBUG_EXAMIN))
- vty_out (vty, "debug ospf6 lsa %s examin%s",
- ospf6_lsa_handler_name (handler), VNL);
- if (CHECK_FLAG (handler->debug, OSPF6_LSA_DEBUG_FLOOD))
- vty_out (vty, "debug ospf6 lsa %s flooding%s",
- ospf6_lsa_handler_name (handler), VNL);
- }
- return 0;
- }