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mirror_frr/ospfd/ospf_te.c
Renato Westphal 0af35d90a1 *: fix assorted issues detected by Coverity Scan 
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
2017-08-24 21:49:39 -03:00

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/*
* This is an implementation of RFC3630
* Copyright (C) 2001 KDD R&D Laboratories, Inc.
* http://www.kddlabs.co.jp/
*
* Copyright (C) 2012 Orange Labs
* http://www.orange.com
*
* 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 this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* Add support of RFC7471 */
/* Add support of RFC5392, RFC6827 */
#include <zebra.h>
#include <math.h>
#include "linklist.h"
#include "prefix.h"
#include "vrf.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 "network.h"
#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"
#include "ospfd/ospf_te.h"
#include "ospfd/ospf_vty.h"
/*
* Global variable to manage Opaque-LSA/MPLS-TE on this node.
* Note that all parameter values are stored in network byte order.
*/
struct ospf_mpls_te OspfMplsTE;
const char *mode2text[] = {"Off", "AS", "Area"};
/*------------------------------------------------------------------------*
* Followings are initialize/terminate functions for MPLS-TE handling.
*------------------------------------------------------------------------*/
static int ospf_mpls_te_new_if(struct interface *ifp);
static int ospf_mpls_te_del_if(struct interface *ifp);
static void ospf_mpls_te_ism_change(struct ospf_interface *oi, int old_status);
static void ospf_mpls_te_nsm_change(struct ospf_neighbor *nbr, int old_status);
static void ospf_mpls_te_config_write_router(struct vty *vty);
static void ospf_mpls_te_show_info(struct vty *vty, struct ospf_lsa *lsa);
static int ospf_mpls_te_lsa_originate_area(void *arg);
static int ospf_mpls_te_lsa_originate_as(void *arg);
static struct ospf_lsa *ospf_mpls_te_lsa_refresh(struct ospf_lsa *lsa);
static void del_mpls_te_link(void *val);
static void ospf_mpls_te_register_vty(void);
int ospf_mpls_te_init(void)
{
int rc;
rc = ospf_register_opaque_functab(
OSPF_OPAQUE_AREA_LSA, OPAQUE_TYPE_TRAFFIC_ENGINEERING_LSA,
ospf_mpls_te_new_if, ospf_mpls_te_del_if,
ospf_mpls_te_ism_change, ospf_mpls_te_nsm_change,
ospf_mpls_te_config_write_router,
NULL, /*ospf_mpls_te_config_write_if */
NULL, /* ospf_mpls_te_config_write_debug */
ospf_mpls_te_show_info, ospf_mpls_te_lsa_originate_area,
ospf_mpls_te_lsa_refresh, NULL, /* ospf_mpls_te_new_lsa_hook */
NULL /* ospf_mpls_te_del_lsa_hook */);
if (rc != 0) {
zlog_warn(
"ospf_mpls_te_init: Failed to register Traffic Engineering functions");
return rc;
}
memset(&OspfMplsTE, 0, sizeof(struct ospf_mpls_te));
OspfMplsTE.enabled = false;
OspfMplsTE.inter_as = Off;
OspfMplsTE.iflist = list_new();
OspfMplsTE.iflist->del = del_mpls_te_link;
ospf_mpls_te_register_vty();
return rc;
}
/* Additional register for RFC5392 support */
static int ospf_mpls_te_register(enum inter_as_mode mode)
{
int rc = 0;
u_int8_t scope;
if (OspfMplsTE.inter_as != Off)
return rc;
if (mode == AS)
scope = OSPF_OPAQUE_AS_LSA;
else
scope = OSPF_OPAQUE_AREA_LSA;
rc = ospf_register_opaque_functab(scope, OPAQUE_TYPE_INTER_AS_LSA, NULL,
NULL, NULL, NULL, NULL, NULL, NULL,
ospf_mpls_te_show_info,
ospf_mpls_te_lsa_originate_as,
ospf_mpls_te_lsa_refresh, NULL, NULL);
if (rc != 0) {
zlog_warn(
"ospf_router_info_init: Failed to register Inter-AS functions");
return rc;
}
return rc;
}
static int ospf_mpls_te_unregister()
{
u_int8_t scope;
if (OspfMplsTE.inter_as == Off)
return 0;
if (OspfMplsTE.inter_as == AS)
scope = OSPF_OPAQUE_AS_LSA;
else
scope = OSPF_OPAQUE_AREA_LSA;
ospf_delete_opaque_functab(scope, OPAQUE_TYPE_INTER_AS_LSA);
return 0;
}
void ospf_mpls_te_term(void)
{
list_delete(OspfMplsTE.iflist);
OspfMplsTE.iflist = NULL;
ospf_delete_opaque_functab(OSPF_OPAQUE_AREA_LSA,
OPAQUE_TYPE_TRAFFIC_ENGINEERING_LSA);
OspfMplsTE.enabled = false;
ospf_mpls_te_unregister();
OspfMplsTE.inter_as = Off;
return;
}
/*------------------------------------------------------------------------*
* Followings are control functions for MPLS-TE parameters management.
*------------------------------------------------------------------------*/
static void del_mpls_te_link(void *val)
{
XFREE(MTYPE_OSPF_MPLS_TE, val);
return;
}
static u_int32_t get_mpls_te_instance_value(void)
{
static u_int32_t seqno = 0;
if (seqno < MAX_LEGAL_TE_INSTANCE_NUM)
seqno += 1;
else
seqno = 1; /* Avoid zero. */
return seqno;
}
static struct mpls_te_link *lookup_linkparams_by_ifp(struct interface *ifp)
{
struct listnode *node, *nnode;
struct mpls_te_link *lp;
for (ALL_LIST_ELEMENTS(OspfMplsTE.iflist, node, nnode, lp))
if (lp->ifp == ifp)
return lp;
return NULL;
}
static struct mpls_te_link *lookup_linkparams_by_instance(struct ospf_lsa *lsa)
{
struct listnode *node;
struct mpls_te_link *lp;
unsigned int key = GET_OPAQUE_ID(ntohl(lsa->data->id.s_addr));
for (ALL_LIST_ELEMENTS_RO(OspfMplsTE.iflist, node, lp))
if (lp->instance == key)
return lp;
zlog_warn("lookup_linkparams_by_instance: Entry not found: key(%x)",
key);
return NULL;
}
static void ospf_mpls_te_foreach_area(void (*func)(struct mpls_te_link *lp,
enum lsa_opcode sched_opcode),
enum lsa_opcode sched_opcode)
{
struct listnode *node, *nnode;
struct listnode *node2;
struct mpls_te_link *lp;
struct ospf_area *area;
for (ALL_LIST_ELEMENTS(OspfMplsTE.iflist, node, nnode, lp)) {
/* Skip Inter-AS TEv2 Links */
if (IS_INTER_AS(lp->type))
continue;
if ((area = lp->area) == NULL)
continue;
if (CHECK_FLAG(lp->flags, LPFLG_LOOKUP_DONE))
continue;
if (func != NULL)
(*func)(lp, sched_opcode);
for (node2 = listnextnode(node); node2;
node2 = listnextnode(node2))
if ((lp = listgetdata(node2)) != NULL)
if (lp->area != NULL)
if (IPV4_ADDR_SAME(&lp->area->area_id,
&area->area_id))
SET_FLAG(lp->flags,
LPFLG_LOOKUP_DONE);
}
for (ALL_LIST_ELEMENTS_RO(OspfMplsTE.iflist, node, lp))
if (lp->area != NULL)
UNSET_FLAG(lp->flags, LPFLG_LOOKUP_DONE);
return;
}
static void set_mpls_te_router_addr(struct in_addr ipv4)
{
OspfMplsTE.router_addr.header.type = htons(TE_TLV_ROUTER_ADDR);
OspfMplsTE.router_addr.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
OspfMplsTE.router_addr.value = ipv4;
return;
}
static void set_linkparams_link_header(struct mpls_te_link *lp)
{
u_int16_t length = 0;
/* TE_LINK_SUBTLV_LINK_TYPE */
if (ntohs(lp->link_type.header.type) != 0)
length += TLV_SIZE(&lp->link_type.header);
/* TE_LINK_SUBTLV_LINK_ID */
if (ntohs(lp->link_id.header.type) != 0)
length += TLV_SIZE(&lp->link_id.header);
/* TE_LINK_SUBTLV_LCLIF_IPADDR */
if (lp->lclif_ipaddr.header.type != 0)
length += TLV_SIZE(&lp->lclif_ipaddr.header);
/* TE_LINK_SUBTLV_RMTIF_IPADDR */
if (lp->rmtif_ipaddr.header.type != 0)
length += TLV_SIZE(&lp->rmtif_ipaddr.header);
/* TE_LINK_SUBTLV_TE_METRIC */
if (ntohs(lp->te_metric.header.type) != 0)
length += TLV_SIZE(&lp->te_metric.header);
/* TE_LINK_SUBTLV_MAX_BW */
if (ntohs(lp->max_bw.header.type) != 0)
length += TLV_SIZE(&lp->max_bw.header);
/* TE_LINK_SUBTLV_MAX_RSV_BW */
if (ntohs(lp->max_rsv_bw.header.type) != 0)
length += TLV_SIZE(&lp->max_rsv_bw.header);
/* TE_LINK_SUBTLV_UNRSV_BW */
if (ntohs(lp->unrsv_bw.header.type) != 0)
length += TLV_SIZE(&lp->unrsv_bw.header);
/* TE_LINK_SUBTLV_RSC_CLSCLR */
if (ntohs(lp->rsc_clsclr.header.type) != 0)
length += TLV_SIZE(&lp->rsc_clsclr.header);
/* TE_LINK_SUBTLV_LLRI */
if (ntohs(lp->llri.header.type) != 0)
length += TLV_SIZE(&lp->llri.header);
/* TE_LINK_SUBTLV_RIP */
if (ntohs(lp->rip.header.type) != 0)
length += TLV_SIZE(&lp->rip.header);
/* TE_LINK_SUBTLV_RAS */
if (ntohs(lp->ras.header.type) != 0)
length += TLV_SIZE(&lp->ras.header);
/* TE_LINK_SUBTLV_LRRID */
if (ntohs(lp->lrrid.header.type) != 0)
length += TLV_SIZE(&lp->lrrid.header);
/* TE_LINK_SUBTLV_AV_DELAY */
if (ntohs(lp->av_delay.header.type) != 0)
length += TLV_SIZE(&lp->av_delay.header);
/* TE_LINK_SUBTLV_MM_DELAY */
if (ntohs(lp->mm_delay.header.type) != 0)
length += TLV_SIZE(&lp->mm_delay.header);
/* TE_LINK_SUBTLV_DELAY_VAR */
if (ntohs(lp->delay_var.header.type) != 0)
length += TLV_SIZE(&lp->delay_var.header);
/* TE_LINK_SUBTLV_PKT_LOSS */
if (ntohs(lp->pkt_loss.header.type) != 0)
length += TLV_SIZE(&lp->pkt_loss.header);
/* TE_LINK_SUBTLV_RES_BW */
if (ntohs(lp->res_bw.header.type) != 0)
length += TLV_SIZE(&lp->res_bw.header);
/* TE_LINK_SUBTLV_AVA_BW */
if (ntohs(lp->ava_bw.header.type) != 0)
length += TLV_SIZE(&lp->ava_bw.header);
/* TE_LINK_SUBTLV_USE_BW */
if (ntohs(lp->use_bw.header.type) != 0)
length += TLV_SIZE(&lp->use_bw.header);
lp->link_header.header.type = htons(TE_TLV_LINK);
lp->link_header.header.length = htons(length);
return;
}
static void set_linkparams_link_type(struct ospf_interface *oi,
struct mpls_te_link *lp)
{
lp->link_type.header.type = htons(TE_LINK_SUBTLV_LINK_TYPE);
lp->link_type.header.length = htons(TE_LINK_SUBTLV_TYPE_SIZE);
switch (oi->type) {
case OSPF_IFTYPE_POINTOPOINT:
lp->link_type.link_type.value = LINK_TYPE_SUBTLV_VALUE_PTP;
break;
case OSPF_IFTYPE_BROADCAST:
case OSPF_IFTYPE_NBMA:
lp->link_type.link_type.value = LINK_TYPE_SUBTLV_VALUE_MA;
break;
default:
/* Not supported yet. */ /* XXX */
lp->link_type.header.type = htons(0);
break;
}
return;
}
static void set_linkparams_link_id(struct ospf_interface *oi,
struct mpls_te_link *lp)
{
struct ospf_neighbor *nbr;
int done = 0;
lp->link_id.header.type = htons(TE_LINK_SUBTLV_LINK_ID);
lp->link_id.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
/*
* The Link ID is identical to the contents of the Link ID field
* in the Router LSA for these link types.
*/
switch (oi->type) {
case OSPF_IFTYPE_POINTOPOINT:
/* Take the router ID of the neighbor. */
if ((nbr = ospf_nbr_lookup_ptop(oi))
&& nbr->state == NSM_Full) {
lp->link_id.value = nbr->router_id;
done = 1;
}
break;
case OSPF_IFTYPE_BROADCAST:
case OSPF_IFTYPE_NBMA:
/* Take the interface address of the designated router. */
if ((nbr = ospf_nbr_lookup_by_addr(oi->nbrs, &DR(oi))) == NULL)
break;
if (nbr->state == NSM_Full
|| (IPV4_ADDR_SAME(&oi->address->u.prefix4, &DR(oi))
&& ospf_nbr_count(oi, NSM_Full) > 0)) {
lp->link_id.value = DR(oi);
done = 1;
}
break;
default:
/* Not supported yet. */ /* XXX */
lp->link_id.header.type = htons(0);
break;
}
if (!done) {
struct in_addr mask;
masklen2ip(oi->address->prefixlen, &mask);
lp->link_id.value.s_addr =
oi->address->u.prefix4.s_addr & mask.s_addr;
}
return;
}
static void set_linkparams_lclif_ipaddr(struct mpls_te_link *lp,
struct in_addr lclif)
{
lp->lclif_ipaddr.header.type = htons(TE_LINK_SUBTLV_LCLIF_IPADDR);
lp->lclif_ipaddr.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->lclif_ipaddr.value[0] = lclif;
return;
}
static void set_linkparams_rmtif_ipaddr(struct mpls_te_link *lp,
struct in_addr rmtif)
{
lp->rmtif_ipaddr.header.type = htons(TE_LINK_SUBTLV_RMTIF_IPADDR);
lp->rmtif_ipaddr.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->rmtif_ipaddr.value[0] = rmtif;
return;
}
static void set_linkparams_te_metric(struct mpls_te_link *lp,
u_int32_t te_metric)
{
lp->te_metric.header.type = htons(TE_LINK_SUBTLV_TE_METRIC);
lp->te_metric.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->te_metric.value = htonl(te_metric);
return;
}
static void set_linkparams_max_bw(struct mpls_te_link *lp, float fp)
{
lp->max_bw.header.type = htons(TE_LINK_SUBTLV_MAX_BW);
lp->max_bw.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->max_bw.value = htonf(fp);
return;
}
static void set_linkparams_max_rsv_bw(struct mpls_te_link *lp, float fp)
{
lp->max_rsv_bw.header.type = htons(TE_LINK_SUBTLV_MAX_RSV_BW);
lp->max_rsv_bw.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->max_rsv_bw.value = htonf(fp);
return;
}
static void set_linkparams_unrsv_bw(struct mpls_te_link *lp, int priority,
float fp)
{
/* Note that TLV-length field is the size of array. */
lp->unrsv_bw.header.type = htons(TE_LINK_SUBTLV_UNRSV_BW);
lp->unrsv_bw.header.length = htons(TE_LINK_SUBTLV_UNRSV_SIZE);
lp->unrsv_bw.value[priority] = htonf(fp);
return;
}
static void set_linkparams_rsc_clsclr(struct mpls_te_link *lp,
u_int32_t classcolor)
{
lp->rsc_clsclr.header.type = htons(TE_LINK_SUBTLV_RSC_CLSCLR);
lp->rsc_clsclr.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->rsc_clsclr.value = htonl(classcolor);
return;
}
static void set_linkparams_inter_as(struct mpls_te_link *lp,
struct in_addr addr, u_int32_t as)
{
/* Set the Remote ASBR IP address and then the associated AS number */
lp->rip.header.type = htons(TE_LINK_SUBTLV_RIP);
lp->rip.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->rip.value = addr;
lp->ras.header.type = htons(TE_LINK_SUBTLV_RAS);
lp->ras.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->ras.value = htonl(as);
}
static void unset_linkparams_inter_as(struct mpls_te_link *lp)
{
/* Reset the Remote ASBR IP address and then the associated AS number */
lp->rip.header.type = htons(0);
lp->rip.header.length = htons(0);
lp->rip.value.s_addr = htonl(0);
lp->ras.header.type = htons(0);
lp->ras.header.length = htons(0);
lp->ras.value = htonl(0);
}
void set_linkparams_llri(struct mpls_te_link *lp, u_int32_t local,
u_int32_t remote)
{
lp->llri.header.type = htons(TE_LINK_SUBTLV_LLRI);
lp->llri.header.length = htons(TE_LINK_SUBTLV_LLRI_SIZE);
lp->llri.local = htonl(local);
lp->llri.remote = htonl(remote);
}
void set_linkparams_lrrid(struct mpls_te_link *lp, struct in_addr local,
struct in_addr remote)
{
lp->lrrid.header.type = htons(TE_LINK_SUBTLV_LRRID);
lp->lrrid.header.length = htons(TE_LINK_SUBTLV_LRRID_SIZE);
lp->lrrid.local.s_addr = local.s_addr;
lp->lrrid.remote.s_addr = remote.s_addr;
}
static void set_linkparams_av_delay(struct mpls_te_link *lp, u_int32_t delay,
u_char anormal)
{
u_int32_t tmp;
/* Note that TLV-length field is the size of array. */
lp->av_delay.header.type = htons(TE_LINK_SUBTLV_AV_DELAY);
lp->av_delay.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
tmp = delay & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
lp->av_delay.value = htonl(tmp);
return;
}
static void set_linkparams_mm_delay(struct mpls_te_link *lp, u_int32_t low,
u_int32_t high, u_char anormal)
{
u_int32_t tmp;
/* Note that TLV-length field is the size of array. */
lp->mm_delay.header.type = htons(TE_LINK_SUBTLV_MM_DELAY);
lp->mm_delay.header.length = htons(TE_LINK_SUBTLV_MM_DELAY_SIZE);
tmp = low & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
lp->mm_delay.low = htonl(tmp);
lp->mm_delay.high = htonl(high);
return;
}
static void set_linkparams_delay_var(struct mpls_te_link *lp, u_int32_t jitter)
{
/* Note that TLV-length field is the size of array. */
lp->delay_var.header.type = htons(TE_LINK_SUBTLV_DELAY_VAR);
lp->delay_var.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->delay_var.value = htonl(jitter & TE_EXT_MASK);
return;
}
static void set_linkparams_pkt_loss(struct mpls_te_link *lp, u_int32_t loss,
u_char anormal)
{
u_int32_t tmp;
/* Note that TLV-length field is the size of array. */
lp->pkt_loss.header.type = htons(TE_LINK_SUBTLV_PKT_LOSS);
lp->pkt_loss.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
tmp = loss & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
lp->pkt_loss.value = htonl(tmp);
return;
}
static void set_linkparams_res_bw(struct mpls_te_link *lp, float fp)
{
/* Note that TLV-length field is the size of array. */
lp->res_bw.header.type = htons(TE_LINK_SUBTLV_RES_BW);
lp->res_bw.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->res_bw.value = htonf(fp);
return;
}
static void set_linkparams_ava_bw(struct mpls_te_link *lp, float fp)
{
/* Note that TLV-length field is the size of array. */
lp->ava_bw.header.type = htons(TE_LINK_SUBTLV_AVA_BW);
lp->ava_bw.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->ava_bw.value = htonf(fp);
return;
}
static void set_linkparams_use_bw(struct mpls_te_link *lp, float fp)
{
/* Note that TLV-length field is the size of array. */
lp->use_bw.header.type = htons(TE_LINK_SUBTLV_USE_BW);
lp->use_bw.header.length = htons(TE_LINK_SUBTLV_DEF_SIZE);
lp->use_bw.value = htonf(fp);
return;
}
/* Update TE parameters from Interface */
static void update_linkparams(struct mpls_te_link *lp)
{
int i;
struct interface *ifp;
/* Get the Interface structure */
if ((ifp = lp->ifp) == NULL) {
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"OSPF MPLS-TE: Abort update TE parameters: no interface associated to Link Parameters");
return;
}
if (!HAS_LINK_PARAMS(ifp)) {
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"OSPF MPLS-TE: Abort update TE parameters: no Link Parameters for interface");
return;
}
/* RFC3630 metrics */
if (IS_PARAM_SET(ifp->link_params, LP_ADM_GRP))
set_linkparams_rsc_clsclr(lp, ifp->link_params->admin_grp);
else
TLV_TYPE(lp->rsc_clsclr) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_MAX_BW))
set_linkparams_max_bw(lp, ifp->link_params->max_bw);
else
TLV_TYPE(lp->max_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_MAX_RSV_BW))
set_linkparams_max_rsv_bw(lp, ifp->link_params->max_rsv_bw);
else
TLV_TYPE(lp->max_rsv_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_UNRSV_BW))
for (i = 0; i < MAX_CLASS_TYPE; i++)
set_linkparams_unrsv_bw(lp, i,
ifp->link_params->unrsv_bw[i]);
else
TLV_TYPE(lp->unrsv_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_TE_METRIC))
set_linkparams_te_metric(lp, ifp->link_params->te_metric);
else
TLV_TYPE(lp->te_metric) = 0;
/* TE metric Extensions */
if (IS_PARAM_SET(ifp->link_params, LP_DELAY))
set_linkparams_av_delay(lp, ifp->link_params->av_delay, 0);
else
TLV_TYPE(lp->av_delay) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_MM_DELAY))
set_linkparams_mm_delay(lp, ifp->link_params->min_delay,
ifp->link_params->max_delay, 0);
else
TLV_TYPE(lp->mm_delay) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_DELAY_VAR))
set_linkparams_delay_var(lp, ifp->link_params->delay_var);
else
TLV_TYPE(lp->delay_var) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_PKT_LOSS))
set_linkparams_pkt_loss(lp, ifp->link_params->pkt_loss, 0);
else
TLV_TYPE(lp->pkt_loss) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_RES_BW))
set_linkparams_res_bw(lp, ifp->link_params->res_bw);
else
TLV_TYPE(lp->res_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_AVA_BW))
set_linkparams_ava_bw(lp, ifp->link_params->ava_bw);
else
TLV_TYPE(lp->ava_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_USE_BW))
set_linkparams_use_bw(lp, ifp->link_params->use_bw);
else
TLV_TYPE(lp->use_bw) = 0;
/* RFC5392 */
if (IS_PARAM_SET(ifp->link_params, LP_RMT_AS)) {
/* Flush LSA if it engaged and was previously a STD_TE one */
if (IS_STD_TE(lp->type)
&& CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED)) {
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"OSPF MPLS-TE Update IF: Switch from Standard LSA to INTER-AS for %s[%d/%d]",
ifp->name, lp->flags, lp->type);
ospf_mpls_te_lsa_schedule(lp, FLUSH_THIS_LSA);
/* Then, switch it to INTER-AS */
if (OspfMplsTE.inter_as == AS)
lp->flags = INTER_AS | FLOOD_AS;
else {
lp->flags = INTER_AS | FLOOD_AREA;
lp->area = ospf_area_lookup_by_area_id(
ospf_lookup(),
OspfMplsTE.interas_areaid);
}
}
set_linkparams_inter_as(lp, ifp->link_params->rmt_ip,
ifp->link_params->rmt_as);
} else {
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"OSPF MPLS-TE Update IF: Switch from INTER-AS LSA to Standard for %s[%d/%d]",
ifp->name, lp->flags, lp->type);
/* reset inter-as TE params */
/* Flush LSA if it engaged and was previously an INTER_AS one */
if (IS_INTER_AS(lp->type)
&& CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED)) {
ospf_mpls_te_lsa_schedule(lp, FLUSH_THIS_LSA);
/* Then, switch it to Standard TE */
lp->flags = STD_TE | FLOOD_AREA;
}
unset_linkparams_inter_as(lp);
}
}
static void initialize_linkparams(struct mpls_te_link *lp)
{
struct interface *ifp = lp->ifp;
struct ospf_interface *oi = NULL;
struct route_node *rn;
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"MPLS-TE(initialize_linkparams) Initialize Link Parameters for interface %s",
ifp->name);
/* Search OSPF Interface parameters for this interface */
for (rn = route_top (IF_OIFS (ifp)); rn; rn = route_next (rn)) {
if ((oi = rn->info) == NULL)
continue;
if (oi->ifp == ifp)
break;
}
if ((oi == NULL) || (oi->ifp != ifp)) {
if (IS_DEBUG_OSPF_TE)
zlog_warn(
"MPLS-TE(initialize_linkparams) Could not find corresponding OSPF Interface for %s",
ifp->name);
return;
}
/*
* Try to set initial values those can be derived from
* zebra-interface information.
*/
set_linkparams_link_type(oi, lp);
/* Set local IP addr */
set_linkparams_lclif_ipaddr(lp, oi->address->u.prefix4);
/* Set Remote IP addr if Point to Point Interface */
if (oi->type == OSPF_IFTYPE_POINTOPOINT) {
struct prefix *pref = CONNECTED_PREFIX(oi->connected);
if (pref != NULL)
set_linkparams_rmtif_ipaddr(lp, pref->u.prefix4);
}
/* Keep Area information in combination with link parameters. */
lp->area = oi->area;
return;
}
static int is_mandated_params_set(struct mpls_te_link *lp)
{
int rc = 0;
if (ntohs(OspfMplsTE.router_addr.header.type) == 0) {
zlog_warn(
"MPLS-TE(is_mandated_params_set) Missing Router Address");
return rc;
}
if (ntohs(lp->link_type.header.type) == 0) {
zlog_warn("MPLS-TE(is_mandated_params_set) Missing Link Type");
return rc;
}
if (!IS_INTER_AS(lp->type) && (ntohs(lp->link_id.header.type) == 0)) {
zlog_warn("MPLS-TE(is_mandated_params_set) Missing Link ID");
return rc;
}
rc = 1;
return rc;
}
/*------------------------------------------------------------------------*
* Followings are callback functions against generic Opaque-LSAs handling.
*------------------------------------------------------------------------*/
static int ospf_mpls_te_new_if(struct interface *ifp)
{
struct mpls_te_link *new;
int rc = -1;
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"MPLS-TE(ospf_mpls_te_new_if) Add new %s interface %s to MPLS-TE list",
ifp->link_params ? "Active" : "Inactive", ifp->name);
if (lookup_linkparams_by_ifp(ifp) != NULL) {
zlog_warn("ospf_mpls_te_new_if: ifp(%p) already in use?",
(void *)ifp);
rc = 0; /* Do nothing here. */
return rc;
}
new = XCALLOC(MTYPE_OSPF_MPLS_TE, sizeof(struct mpls_te_link));
if (new == NULL) {
zlog_warn("ospf_mpls_te_new_if: XMALLOC: %s",
safe_strerror(errno));
return rc;
}
new->instance = get_mpls_te_instance_value();
new->ifp = ifp;
/* By default TE-Link is RFC3630 compatible flooding in Area and not
* active */
/* This default behavior will be adapted with call to
* ospf_mpls_te_update_if() */
new->type = STD_TE | FLOOD_AREA;
new->flags = LPFLG_LSA_INACTIVE;
/* Initialize Link Parameters from Interface */
initialize_linkparams(new);
/* Set TE Parameters from Interface */
update_linkparams(new);
/* Add Link Parameters structure to the list */
listnode_add(OspfMplsTE.iflist, new);
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"OSPF MPLS-TE New IF: Add new LP context for %s[%d/%d]",
ifp->name, new->flags, new->type);
/* Schedule Opaque-LSA refresh. */ /* XXX */
rc = 0;
return rc;
}
static int ospf_mpls_te_del_if(struct interface *ifp)
{
struct mpls_te_link *lp;
int rc = -1;
if ((lp = lookup_linkparams_by_ifp(ifp)) != NULL) {
struct list *iflist = OspfMplsTE.iflist;
/* Dequeue listnode entry from the list. */
listnode_delete(iflist, lp);
/* Avoid misjudgement in the next lookup. */
if (listcount(iflist) == 0)
iflist->head = iflist->tail = NULL;
XFREE(MTYPE_OSPF_MPLS_TE, lp);
}
/* Schedule Opaque-LSA refresh. */ /* XXX */
rc = 0;
return rc;
}
/* Main initialization / update function of the MPLS TE Link context */
/* Call when interface TE Link parameters are modified */
void ospf_mpls_te_update_if(struct interface *ifp)
{
struct mpls_te_link *lp;
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"OSPF MPLS-TE: Update LSA parameters for interface %s [%s]",
ifp->name, HAS_LINK_PARAMS(ifp) ? "ON" : "OFF");
/* Get Link context from interface */
if ((lp = lookup_linkparams_by_ifp(ifp)) == NULL) {
zlog_warn(
"OSPF MPLS-TE Update: Did not find Link Parameters context for interface %s",
ifp->name);
return;
}
/* Fulfill MPLS-TE Link TLV from Interface TE Link parameters */
if (HAS_LINK_PARAMS(ifp)) {
SET_FLAG(lp->flags, LPFLG_LSA_ACTIVE);
/* Update TE parameters */
update_linkparams(lp);
/* Finally Re-Originate or Refresh Opaque LSA if MPLS_TE is
* enabled */
if (OspfMplsTE.enabled)
if (lp->area != NULL) {
if (CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED))
ospf_mpls_te_lsa_schedule(lp, REFRESH_THIS_LSA);
else
ospf_mpls_te_lsa_schedule(lp, REORIGINATE_THIS_LSA);
}
} else {
/* If MPLS TE is disable on this interface, flush LSA if it is
* already engaged */
if (CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED))
ospf_mpls_te_lsa_schedule(lp, FLUSH_THIS_LSA);
else
/* Reset Activity flag */
lp->flags = LPFLG_LSA_INACTIVE;
}
return;
}
static void ospf_mpls_te_ism_change(struct ospf_interface *oi, int old_state)
{
struct te_link_subtlv_link_type old_type;
struct te_link_subtlv_link_id old_id;
struct mpls_te_link *lp;
if ((lp = lookup_linkparams_by_ifp(oi->ifp)) == NULL) {
zlog_warn(
"ospf_mpls_te_ism_change: Cannot get linkparams from OI(%s)?",
IF_NAME(oi));
return;
}
if (oi->area == NULL || oi->area->ospf == NULL) {
zlog_warn(
"ospf_mpls_te_ism_change: Cannot refer to OSPF from OI(%s)?",
IF_NAME(oi));
return;
}
#ifdef notyet
if ((lp->area != NULL
&& !IPV4_ADDR_SAME(&lp->area->area_id, &oi->area->area_id))
|| (lp->area != NULL && oi->area == NULL)) {
/* How should we consider this case? */
zlog_warn(
"MPLS-TE: Area for OI(%s) has changed to [%s], flush previous LSAs",
IF_NAME(oi),
oi->area ? inet_ntoa(oi->area->area_id) : "N/A");
ospf_mpls_te_lsa_schedule(lp, FLUSH_THIS_LSA);
}
#endif
/* Keep Area information in combination with linkparams. */
lp->area = oi->area;
/* Keep interface MPLS-TE status */
lp->flags = HAS_LINK_PARAMS(oi->ifp);
switch (oi->state) {
case ISM_PointToPoint:
case ISM_DROther:
case ISM_Backup:
case ISM_DR:
old_type = lp->link_type;
old_id = lp->link_id;
/* Set Link type, Link ID, Local and Remote IP addr */
set_linkparams_link_type(oi, lp);
set_linkparams_link_id(oi, lp);
set_linkparams_lclif_ipaddr(lp, oi->address->u.prefix4);
if (oi->type == LINK_TYPE_SUBTLV_VALUE_PTP) {
struct prefix *pref = CONNECTED_PREFIX(oi->connected);
if (pref != NULL)
set_linkparams_rmtif_ipaddr(lp,
pref->u.prefix4);
}
/* Update TE parameters */
update_linkparams(lp);
/* Try to Schedule LSA */
if ((ntohs(old_type.header.type)
!= ntohs(lp->link_type.header.type)
|| old_type.link_type.value
!= lp->link_type.link_type.value)
|| (ntohs(old_id.header.type)
!= ntohs(lp->link_id.header.type)
|| ntohl(old_id.value.s_addr)
!= ntohl(lp->link_id.value.s_addr))) {
if (CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED))
ospf_mpls_te_lsa_schedule(lp, REFRESH_THIS_LSA);
else
ospf_mpls_te_lsa_schedule(lp, REORIGINATE_THIS_LSA);
}
break;
default:
lp->link_type.header.type = htons(0);
lp->link_id.header.type = htons(0);
if (CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED))
ospf_mpls_te_lsa_schedule(lp, FLUSH_THIS_LSA);
break;
}
return;
}
static void ospf_mpls_te_nsm_change(struct ospf_neighbor *nbr, int old_state)
{
/* Nothing to do here */
return;
}
/*------------------------------------------------------------------------*
* Followings are OSPF protocol processing functions for MPLS-TE.
*------------------------------------------------------------------------*/
static void build_tlv_header(struct stream *s, struct tlv_header *tlvh)
{
stream_put(s, tlvh, sizeof(struct tlv_header));
return;
}
static void build_router_tlv(struct stream *s)
{
struct tlv_header *tlvh = &OspfMplsTE.router_addr.header;
if (ntohs(tlvh->type) != 0) {
build_tlv_header(s, tlvh);
stream_put(s, TLV_DATA(tlvh), TLV_BODY_SIZE(tlvh));
}
return;
}
static void build_link_subtlv(struct stream *s, struct tlv_header *tlvh)
{
if ((tlvh != NULL) && (ntohs(tlvh->type) != 0)) {
build_tlv_header(s, tlvh);
stream_put(s, TLV_DATA(tlvh), TLV_BODY_SIZE(tlvh));
}
return;
}
static void build_link_tlv(struct stream *s, struct mpls_te_link *lp)
{
set_linkparams_link_header(lp);
build_tlv_header(s, &lp->link_header.header);
build_link_subtlv(s, &lp->link_type.header);
build_link_subtlv(s, &lp->link_id.header);
build_link_subtlv(s, &lp->lclif_ipaddr.header);
build_link_subtlv(s, &lp->rmtif_ipaddr.header);
build_link_subtlv(s, &lp->te_metric.header);
build_link_subtlv(s, &lp->max_bw.header);
build_link_subtlv(s, &lp->max_rsv_bw.header);
build_link_subtlv(s, &lp->unrsv_bw.header);
build_link_subtlv(s, &lp->rsc_clsclr.header);
build_link_subtlv(s, &lp->lrrid.header);
build_link_subtlv(s, &lp->llri.header);
build_link_subtlv(s, &lp->rip.header);
build_link_subtlv(s, &lp->ras.header);
build_link_subtlv(s, &lp->av_delay.header);
build_link_subtlv(s, &lp->mm_delay.header);
build_link_subtlv(s, &lp->delay_var.header);
build_link_subtlv(s, &lp->pkt_loss.header);
build_link_subtlv(s, &lp->res_bw.header);
build_link_subtlv(s, &lp->ava_bw.header);
build_link_subtlv(s, &lp->use_bw.header);
return;
}
static void ospf_mpls_te_lsa_body_set(struct stream *s, struct mpls_te_link *lp)
{
/*
* The router address TLV is type 1, and ...
* It must appear in exactly one
* Traffic Engineering LSA originated by a router.
*/
build_router_tlv(s);
/*
* Only one Link TLV shall be carried in each LSA, allowing for fine
* granularity changes in topology.
*/
build_link_tlv(s, lp);
return;
}
/* Create new opaque-LSA. */
static struct ospf_lsa *ospf_mpls_te_lsa_new(struct ospf_area *area,
struct mpls_te_link *lp)
{
struct stream *s;
struct lsa_header *lsah;
struct ospf_lsa *new = NULL;
u_char options, lsa_type = 0;
struct in_addr lsa_id;
u_int32_t tmp;
u_int16_t length;
/* Create a stream for LSA. */
if ((s = stream_new(OSPF_MAX_LSA_SIZE)) == NULL) {
zlog_warn("ospf_mpls_te_lsa_new: stream_new() ?");
return NULL;
}
lsah = (struct lsa_header *)STREAM_DATA(s);
options = OSPF_OPTION_O; /* Don't forget this :-) */
/* Set opaque-LSA header fields depending of the type of RFC */
if (IS_INTER_AS(lp->type)) {
if
IS_FLOOD_AS(lp->type)
{
options |= OSPF_OPTION_E; /* Enable AS external
as we flood
Inter-AS with
Opaque Type 11 */
lsa_type = OSPF_OPAQUE_AS_LSA;
}
else {
options |= LSA_OPTIONS_GET(
area); /* Get area default option */
options |= LSA_OPTIONS_NSSA_GET(area);
lsa_type = OSPF_OPAQUE_AREA_LSA;
}
tmp = SET_OPAQUE_LSID(OPAQUE_TYPE_INTER_AS_LSA, lp->instance);
lsa_id.s_addr = htonl(tmp);
struct ospf *top = ospf_lookup();
lsa_header_set(s, options, lsa_type, lsa_id, top->router_id);
} else {
options |= LSA_OPTIONS_GET(area); /* Get area default option */
options |= LSA_OPTIONS_NSSA_GET(area);
lsa_type = OSPF_OPAQUE_AREA_LSA;
tmp = SET_OPAQUE_LSID(OPAQUE_TYPE_TRAFFIC_ENGINEERING_LSA,
lp->instance);
lsa_id.s_addr = htonl(tmp);
lsa_header_set(s, options, lsa_type, lsa_id,
area->ospf->router_id);
}
if (IS_DEBUG_OSPF(lsa, LSA_GENERATE))
zlog_debug(
"LSA[Type%d:%s]: Create an Opaque-LSA/MPLS-TE instance",
lsa_type, inet_ntoa(lsa_id));
/* Set opaque-LSA body fields. */
ospf_mpls_te_lsa_body_set(s, lp);
/* Set length. */
length = stream_get_endp(s);
lsah->length = htons(length);
/* Now, create an OSPF LSA instance. */
if ((new = ospf_lsa_new()) == NULL) {
zlog_warn("ospf_mpls_te_lsa_new: ospf_lsa_new() ?");
stream_free(s);
return NULL;
}
if ((new->data = ospf_lsa_data_new(length)) == NULL) {
zlog_warn("ospf_mpls_te_lsa_new: ospf_lsa_data_new() ?");
ospf_lsa_unlock(&new);
new = NULL;
stream_free(s);
return new;
}
new->area = area;
SET_FLAG(new->flags, OSPF_LSA_SELF);
memcpy(new->data, lsah, length);
stream_free(s);
return new;
}
static int ospf_mpls_te_lsa_originate1(struct ospf_area *area,
struct mpls_te_link *lp)
{
struct ospf_lsa *new;
int rc = -1;
/* Create new Opaque-LSA/MPLS-TE instance. */
if ((new = ospf_mpls_te_lsa_new(area, lp)) == NULL) {
zlog_warn(
"ospf_mpls_te_lsa_originate1: ospf_mpls_te_lsa_new() ?");
return rc;
}
/* Install this LSA into LSDB. */
if (ospf_lsa_install(area->ospf, NULL /*oi*/, new) == NULL) {
zlog_warn("ospf_mpls_te_lsa_originate1: ospf_lsa_install() ?");
ospf_lsa_unlock(&new);
return rc;
}
/* Now this link-parameter entry has associated LSA. */
SET_FLAG(lp->flags, LPFLG_LSA_ENGAGED);
/* Update new LSA origination count. */
area->ospf->lsa_originate_count++;
/* Flood new LSA through area. */
ospf_flood_through_area(area, NULL /*nbr*/, new);
if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) {
char area_id[INET_ADDRSTRLEN];
strcpy(area_id, inet_ntoa(area->area_id));
zlog_debug(
"LSA[Type%d:%s]: Originate Opaque-LSA/MPLS-TE: Area(%s), Link(%s)",
new->data->type, inet_ntoa(new->data->id), area_id,
lp->ifp->name);
ospf_lsa_header_dump(new->data);
}
rc = 0;
return rc;
}
static int ospf_mpls_te_lsa_originate_area(void *arg)
{
struct ospf_area *area = (struct ospf_area *)arg;
struct listnode *node, *nnode;
struct mpls_te_link *lp;
int rc = -1;
if (!OspfMplsTE.enabled) {
zlog_info(
"ospf_mpls_te_lsa_originate_area: MPLS-TE is disabled now.");
rc = 0; /* This is not an error case. */
return rc;
}
for (ALL_LIST_ELEMENTS(OspfMplsTE.iflist, node, nnode, lp)) {
/* Process only enabled LSA with area scope flooding */
if (!CHECK_FLAG(lp->flags, LPFLG_LSA_ACTIVE)
|| IS_FLOOD_AS(lp->type))
continue;
if (lp->area == NULL)
continue;
if (!IPV4_ADDR_SAME(&lp->area->area_id, &area->area_id))
continue;
if (CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED)) {
if (CHECK_FLAG(lp->flags, LPFLG_LSA_FORCED_REFRESH)) {
UNSET_FLAG(lp->flags, LPFLG_LSA_FORCED_REFRESH);
zlog_warn(
"OSPF MPLS-TE (ospf_mpls_te_lsa_originate_area): Refresh instead of Originate");
ospf_mpls_te_lsa_schedule(lp, REFRESH_THIS_LSA);
}
continue;
}
if (!is_mandated_params_set(lp)) {
zlog_warn(
"ospf_mpls_te_lsa_originate_area: Link(%s) lacks some mandated MPLS-TE parameters.",
lp->ifp ? lp->ifp->name : "?");
continue;
}
/* Ok, let's try to originate an LSA for this area and Link. */
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"MPLS-TE(ospf_mpls_te_lsa_originate_area) Let's finally reoriginate the LSA %d through the Area %s for Link %s",
lp->instance, inet_ntoa(area->area_id),
lp->ifp ? lp->ifp->name : "?");
if (ospf_mpls_te_lsa_originate1(area, lp) != 0)
return rc;
}
rc = 0;
return rc;
}
static int ospf_mpls_te_lsa_originate2(struct ospf *top,
struct mpls_te_link *lp)
{
struct ospf_lsa *new;
int rc = -1;
/* Create new Opaque-LSA/Inter-AS instance. */
if ((new = ospf_mpls_te_lsa_new(NULL, lp)) == NULL) {
zlog_warn(
"ospf_mpls_te_lsa_originate2: ospf_router_info_lsa_new() ?");
return rc;
}
/* Install this LSA into LSDB. */
if (ospf_lsa_install(top, NULL /*oi */, new) == NULL) {
zlog_warn("ospf_mpls_te_lsa_originate2: ospf_lsa_install() ?");
ospf_lsa_unlock(&new);
return rc;
}
/* Now this Router Info parameter entry has associated LSA. */
SET_FLAG(lp->flags, LPFLG_LSA_ENGAGED);
/* Update new LSA origination count. */
top->lsa_originate_count++;
/* Flood new LSA through AS. */
ospf_flood_through_as(top, NULL /*nbr */, new);
if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) {
zlog_debug(
"LSA[Type%d:%s]: Originate Opaque-LSA/MPLS-TE Inter-AS",
new->data->type, inet_ntoa(new->data->id));
ospf_lsa_header_dump(new->data);
}
rc = 0;
return rc;
}
static int ospf_mpls_te_lsa_originate_as(void *arg)
{
struct ospf *top;
struct ospf_area *area;
struct listnode *node, *nnode;
struct mpls_te_link *lp;
int rc = -1;
if ((!OspfMplsTE.enabled)
|| (OspfMplsTE.inter_as == Off)) {
zlog_info(
"ospf_mpls_te_lsa_originate_as: MPLS-TE Inter-AS is disabled for now.");
rc = 0; /* This is not an error case. */
return rc;
}
for (ALL_LIST_ELEMENTS(OspfMplsTE.iflist, node, nnode, lp)) {
/* Process only enabled INTER_AS Links or Pseudo-Links */
if (!CHECK_FLAG(lp->flags, LPFLG_LSA_ACTIVE)
|| !IS_INTER_AS(lp->type))
continue;
if (CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED)) {
if (CHECK_FLAG(lp->flags, LPFLG_LSA_FORCED_REFRESH)) {
UNSET_FLAG(lp->flags,LPFLG_LSA_FORCED_REFRESH);
ospf_mpls_te_lsa_schedule(lp, REFRESH_THIS_LSA);
}
continue;
}
if (!is_mandated_params_set(lp)) {
zlog_warn(
"ospf_mpls_te_lsa_originate_as: Link(%s) lacks some mandated MPLS-TE parameters.",
lp->ifp ? lp->ifp->name : "?");
continue;
}
/* Ok, let's try to originate an LSA for this AS and Link. */
if (IS_DEBUG_OSPF_TE)
zlog_debug(
"MPLS-TE(ospf_mpls_te_lsa_originate_as) Let's finally re-originate the Inter-AS LSA %d through the %s for Link %s",
lp->instance,
IS_FLOOD_AS(lp->type) ? "AS" : "Area",
lp->ifp ? lp->ifp->name : "Unknown");
if (IS_FLOOD_AS(lp->type)) {
top = (struct ospf *)arg;
ospf_mpls_te_lsa_originate2(top, lp);
} else {
area = (struct ospf_area *)arg;
ospf_mpls_te_lsa_originate1(area, lp);
}
}
rc = 0;
return rc;
}
static struct ospf_lsa *ospf_mpls_te_lsa_refresh(struct ospf_lsa *lsa)
{
struct mpls_te_link *lp;
struct ospf_area *area = lsa->area;
struct ospf *top;
struct ospf_lsa *new = NULL;
if (!OspfMplsTE.enabled) {
/*
* This LSA must have flushed before due to MPLS-TE status
* change.
* It seems a slip among routers in the routing domain.
*/
zlog_info("ospf_mpls_te_lsa_refresh: MPLS-TE is disabled now.");
lsa->data->ls_age =
htons(OSPF_LSA_MAXAGE); /* Flush it anyway. */
}
/* At first, resolve lsa/lp relationship. */
if ((lp = lookup_linkparams_by_instance(lsa)) == NULL) {
zlog_warn("ospf_mpls_te_lsa_refresh: Invalid parameter?");
lsa->data->ls_age =
htons(OSPF_LSA_MAXAGE); /* Flush it anyway. */
}
/* Check if lp was not disable in the interval */
if (!CHECK_FLAG(lp->flags, LPFLG_LSA_ACTIVE)) {
zlog_warn(
"ospf_mpls_te_lsa_refresh: lp was disabled: Flush it!");
lsa->data->ls_age =
htons(OSPF_LSA_MAXAGE); /* Flush it anyway. */
}
/* If the lsa's age reached to MaxAge, start flushing procedure. */
if (IS_LSA_MAXAGE(lsa)) {
if (lp)
UNSET_FLAG(lp->flags, LPFLG_LSA_ENGAGED);
ospf_opaque_lsa_flush_schedule(lsa);
return NULL;
}
/* Create new Opaque-LSA/MPLS-TE instance. */
if ((new = ospf_mpls_te_lsa_new(area, lp)) == NULL) {
zlog_warn("ospf_mpls_te_lsa_refresh: ospf_mpls_te_lsa_new() ?");
return NULL;
}
new->data->ls_seqnum = lsa_seqnum_increment(lsa);
/* Install this LSA into LSDB. */
/* Given "lsa" will be freed in the next function. */
/* As area could be NULL i.e. when using OPAQUE_LSA_AS, we prefer to use
* ospf_lookup() to get ospf instance */
if (area)
top = area->ospf;
else
top = ospf_lookup();
if (ospf_lsa_install(top, NULL /*oi */, new) == NULL) {
zlog_warn("ospf_mpls_te_lsa_refresh: ospf_lsa_install() ?");
ospf_lsa_unlock(&new);
return NULL;
}
/* Flood updated LSA through AS or Area depending of the RFC of the link
*/
if (IS_FLOOD_AS(lp->type))
ospf_flood_through_as(top, NULL, new);
else
ospf_flood_through_area(area, NULL /*nbr*/, new);
/* Debug logging. */
if (IS_DEBUG_OSPF(lsa, LSA_GENERATE)) {
zlog_debug("LSA[Type%d:%s]: Refresh Opaque-LSA/MPLS-TE",
new->data->type, inet_ntoa(new->data->id));
ospf_lsa_header_dump(new->data);
}
return new;
}
void ospf_mpls_te_lsa_schedule(struct mpls_te_link *lp, enum lsa_opcode opcode)
{
struct ospf_lsa lsa;
struct lsa_header lsah;
struct ospf *top;
u_int32_t tmp;
memset(&lsa, 0, sizeof(lsa));
memset(&lsah, 0, sizeof(lsah));
top = ospf_lookup();
/* Check if the pseudo link is ready to flood */
if (!(CHECK_FLAG(lp->flags, LPFLG_LSA_ACTIVE))
|| !(IS_FLOOD_AREA(lp->type) || IS_FLOOD_AS(lp->type))) {
return;
}
lsa.area = lp->area;
lsa.data = &lsah;
if (IS_FLOOD_AS(lp->type)) {
lsah.type = OSPF_OPAQUE_AS_LSA;
tmp = SET_OPAQUE_LSID(OPAQUE_TYPE_INTER_AS_LSA, lp->instance);
lsah.id.s_addr = htonl(tmp);
} else {
lsah.type = OSPF_OPAQUE_AREA_LSA;
if (IS_INTER_AS(lp->type)) {
/* Set the area context if not know */
if (lp->area == NULL)
lp->area = ospf_area_lookup_by_area_id(
top, OspfMplsTE.interas_areaid);
/* Unable to set the area context. Abort! */
if (lp->area == NULL) {
zlog_warn(
"MPLS-TE(ospf_mpls_te_lsa_schedule) Area context is null. Abort !");
return;
}
tmp = SET_OPAQUE_LSID(OPAQUE_TYPE_INTER_AS_LSA,
lp->instance);
} else
tmp = SET_OPAQUE_LSID(
OPAQUE_TYPE_TRAFFIC_ENGINEERING_LSA,
lp->instance);
lsah.id.s_addr = htonl(tmp);
}
switch (opcode) {
case REORIGINATE_THIS_LSA:
if (IS_FLOOD_AS(lp->type)) {
ospf_opaque_lsa_reoriginate_schedule(
(void *)top, OSPF_OPAQUE_AS_LSA,
OPAQUE_TYPE_INTER_AS_LSA);
break;
}
if (IS_FLOOD_AREA(lp->type)) {
if (IS_INTER_AS(lp->type))
ospf_opaque_lsa_reoriginate_schedule(
(void *)lp->area, OSPF_OPAQUE_AREA_LSA,
OPAQUE_TYPE_INTER_AS_LSA);
else
ospf_opaque_lsa_reoriginate_schedule(
(void *)lp->area, OSPF_OPAQUE_AREA_LSA,
OPAQUE_TYPE_TRAFFIC_ENGINEERING_LSA);
break;
}
break;
case REFRESH_THIS_LSA:
ospf_opaque_lsa_refresh_schedule(&lsa);
break;
case FLUSH_THIS_LSA:
/* Reset Activity flag */
lp->flags = LPFLG_LSA_INACTIVE;
ospf_opaque_lsa_flush_schedule(&lsa);
break;
default:
zlog_warn("ospf_mpls_te_lsa_schedule: Unknown opcode (%u)",
opcode);
break;
}
return;
}
/*------------------------------------------------------------------------*
* Followings are vty session control functions.
*------------------------------------------------------------------------*/
static u_int16_t show_vty_router_addr(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_tlv_router_addr *top = (struct te_tlv_router_addr *)tlvh;
if (vty != NULL)
vty_out(vty, " Router-Address: %s\n", inet_ntoa(top->value));
else
zlog_debug(" Router-Address: %s", inet_ntoa(top->value));
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_header(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_tlv_link *top = (struct te_tlv_link *)tlvh;
if (vty != NULL)
vty_out(vty, " Link: %u octets of data\n",
ntohs(top->header.length));
else
zlog_debug(" Link: %u octets of data",
ntohs(top->header.length));
return TLV_HDR_SIZE; /* Here is special, not "TLV_SIZE". */
}
static u_int16_t show_vty_link_subtlv_link_type(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_link_type *top;
const char *cp = "Unknown";
top = (struct te_link_subtlv_link_type *)tlvh;
switch (top->link_type.value) {
case LINK_TYPE_SUBTLV_VALUE_PTP:
cp = "Point-to-point";
break;
case LINK_TYPE_SUBTLV_VALUE_MA:
cp = "Multiaccess";
break;
default:
break;
}
if (vty != NULL)
vty_out(vty, " Link-Type: %s (%u)\n", cp,
top->link_type.value);
else
zlog_debug(" Link-Type: %s (%u)", cp, top->link_type.value);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_link_id(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_link_id *top;
top = (struct te_link_subtlv_link_id *)tlvh;
if (vty != NULL)
vty_out(vty, " Link-ID: %s\n", inet_ntoa(top->value));
else
zlog_debug(" Link-ID: %s", inet_ntoa(top->value));
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_lclif_ipaddr(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_lclif_ipaddr *top;
int i, n;
top = (struct te_link_subtlv_lclif_ipaddr *)tlvh;
n = ntohs(tlvh->length) / sizeof(top->value[0]);
if (vty != NULL)
vty_out(vty, " Local Interface IP Address(es): %d\n", n);
else
zlog_debug(" Local Interface IP Address(es): %d", n);
for (i = 0; i < n; i++) {
if (vty != NULL)
vty_out(vty, " #%d: %s\n", i,
inet_ntoa(top->value[i]));
else
zlog_debug(" #%d: %s", i,
inet_ntoa(top->value[i]));
}
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_rmtif_ipaddr(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_rmtif_ipaddr *top;
int i, n;
top = (struct te_link_subtlv_rmtif_ipaddr *)tlvh;
n = ntohs(tlvh->length) / sizeof(top->value[0]);
if (vty != NULL)
vty_out(vty, " Remote Interface IP Address(es): %d\n", n);
else
zlog_debug(" Remote Interface IP Address(es): %d", n);
for (i = 0; i < n; i++) {
if (vty != NULL)
vty_out(vty, " #%d: %s\n", i,
inet_ntoa(top->value[i]));
else
zlog_debug(" #%d: %s", i,
inet_ntoa(top->value[i]));
}
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_te_metric(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_te_metric *top;
top = (struct te_link_subtlv_te_metric *)tlvh;
if (vty != NULL)
vty_out(vty, " Traffic Engineering Metric: %u\n",
(u_int32_t)ntohl(top->value));
else
zlog_debug(" Traffic Engineering Metric: %u",
(u_int32_t)ntohl(top->value));
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_max_bw(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_max_bw *top;
float fval;
top = (struct te_link_subtlv_max_bw *)tlvh;
fval = ntohf(top->value);
if (vty != NULL)
vty_out(vty, " Maximum Bandwidth: %g (Bytes/sec)\n", fval);
else
zlog_debug(" Maximum Bandwidth: %g (Bytes/sec)", fval);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_max_rsv_bw(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_max_rsv_bw *top;
float fval;
top = (struct te_link_subtlv_max_rsv_bw *)tlvh;
fval = ntohf(top->value);
if (vty != NULL)
vty_out(vty, " Maximum Reservable Bandwidth: %g (Bytes/sec)\n",
fval);
else
zlog_debug(" Maximum Reservable Bandwidth: %g (Bytes/sec)",
fval);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_unrsv_bw(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_unrsv_bw *top;
float fval1, fval2;
int i;
top = (struct te_link_subtlv_unrsv_bw *)tlvh;
if (vty != NULL)
vty_out(vty,
" Unreserved Bandwidth per Class Type in Byte/s:\n");
else
zlog_debug(
" Unreserved Bandwidth per Class Type in Byte/s:");
for (i = 0; i < MAX_CLASS_TYPE; i += 2) {
fval1 = ntohf(top->value[i]);
fval2 = ntohf(top->value[i + 1]);
if (vty != NULL)
vty_out(vty,
" [%d]: %g (Bytes/sec),\t[%d]: %g (Bytes/sec)\n",
i, fval1, i + 1, fval2);
else
zlog_debug(
" [%d]: %g (Bytes/sec),\t[%d]: %g (Bytes/sec)",
i, fval1, i + 1, fval2);
}
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_rsc_clsclr(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_rsc_clsclr *top;
top = (struct te_link_subtlv_rsc_clsclr *)tlvh;
if (vty != NULL)
vty_out(vty, " Resource class/color: 0x%x\n",
(u_int32_t)ntohl(top->value));
else
zlog_debug(" Resource Class/Color: 0x%x",
(u_int32_t)ntohl(top->value));
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_lrrid(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_lrrid *top;
top = (struct te_link_subtlv_lrrid *)tlvh;
if (vty != NULL) {
vty_out(vty, " Local TE Router ID: %s\n",
inet_ntoa(top->local));
vty_out(vty, " Remote TE Router ID: %s\n",
inet_ntoa(top->remote));
} else {
zlog_debug(" Local TE Router ID: %s",
inet_ntoa(top->local));
zlog_debug(" Remote TE Router ID: %s",
inet_ntoa(top->remote));
}
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_llri(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_llri *top;
top = (struct te_link_subtlv_llri *)tlvh;
if (vty != NULL) {
vty_out(vty, " Link Local ID: %d\n",
(u_int32_t)ntohl(top->local));
vty_out(vty, " Link Remote ID: %d\n",
(u_int32_t)ntohl(top->remote));
} else {
zlog_debug(" Link Local ID: %d",
(u_int32_t)ntohl(top->local));
zlog_debug(" Link Remote ID: %d",
(u_int32_t)ntohl(top->remote));
}
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_rip(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_rip *top;
top = (struct te_link_subtlv_rip *)tlvh;
if (vty != NULL)
vty_out(vty, " Inter-AS TE Remote ASBR IP address: %s\n",
inet_ntoa(top->value));
else
zlog_debug(" Inter-AS TE Remote ASBR IP address: %s",
inet_ntoa(top->value));
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_ras(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_ras *top;
top = (struct te_link_subtlv_ras *)tlvh;
if (vty != NULL)
vty_out(vty, " Inter-AS TE Remote AS number: %u\n",
ntohl(top->value));
else
zlog_debug(" Inter-AS TE Remote AS number: %u",
ntohl(top->value));
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_av_delay(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_av_delay *top;
u_int32_t delay;
u_int32_t anomalous;
top = (struct te_link_subtlv_av_delay *)tlvh;
delay = (u_int32_t)ntohl(top->value) & TE_EXT_MASK;
anomalous = (u_int32_t)ntohl(top->value) & TE_EXT_ANORMAL;
if (vty != NULL)
vty_out(vty, " %s Average Link Delay: %d (micro-sec)\n",
anomalous ? "Anomalous" : "Normal", delay);
else
zlog_debug(" %s Average Link Delay: %d (micro-sec)",
anomalous ? "Anomalous" : "Normal", delay);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_mm_delay(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_mm_delay *top;
u_int32_t low, high;
u_int32_t anomalous;
top = (struct te_link_subtlv_mm_delay *)tlvh;
low = (u_int32_t)ntohl(top->low) & TE_EXT_MASK;
anomalous = (u_int32_t)ntohl(top->low) & TE_EXT_ANORMAL;
high = (u_int32_t)ntohl(top->high);
if (vty != NULL)
vty_out(vty, " %s Min/Max Link Delay: %d/%d (micro-sec)\n",
anomalous ? "Anomalous" : "Normal", low, high);
else
zlog_debug(" %s Min/Max Link Delay: %d/%d (micro-sec)",
anomalous ? "Anomalous" : "Normal", low, high);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_delay_var(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_delay_var *top;
u_int32_t jitter;
top = (struct te_link_subtlv_delay_var *)tlvh;
jitter = (u_int32_t)ntohl(top->value) & TE_EXT_MASK;
if (vty != NULL)
vty_out(vty, " Delay Variation: %d (micro-sec)\n", jitter);
else
zlog_debug(" Delay Variation: %d (micro-sec)", jitter);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_pkt_loss(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_pkt_loss *top;
u_int32_t loss;
u_int32_t anomalous;
float fval;
top = (struct te_link_subtlv_pkt_loss *)tlvh;
loss = (u_int32_t)ntohl(top->value) & TE_EXT_MASK;
fval = (float)(loss * LOSS_PRECISION);
anomalous = (u_int32_t)ntohl(top->value) & TE_EXT_ANORMAL;
if (vty != NULL)
vty_out(vty, " %s Link Loss: %g (%%)\n",
anomalous ? "Anomalous" : "Normal", fval);
else
zlog_debug(" %s Link Loss: %g (%%)",
anomalous ? "Anomalous" : "Normal", fval);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_res_bw(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_res_bw *top;
float fval;
top = (struct te_link_subtlv_res_bw *)tlvh;
fval = ntohf(top->value);
if (vty != NULL)
vty_out(vty,
" Unidirectional Residual Bandwidth: %g (Bytes/sec)\n",
fval);
else
zlog_debug(
" Unidirectional Residual Bandwidth: %g (Bytes/sec)",
fval);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_ava_bw(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_ava_bw *top;
float fval;
top = (struct te_link_subtlv_ava_bw *)tlvh;
fval = ntohf(top->value);
if (vty != NULL)
vty_out(vty,
" Unidirectional Available Bandwidth: %g (Bytes/sec)\n",
fval);
else
zlog_debug(
" Unidirectional Available Bandwidth: %g (Bytes/sec)",
fval);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_link_subtlv_use_bw(struct vty *vty,
struct tlv_header *tlvh)
{
struct te_link_subtlv_use_bw *top;
float fval;
top = (struct te_link_subtlv_use_bw *)tlvh;
fval = ntohf(top->value);
if (vty != NULL)
vty_out(vty,
" Unidirectional Utilized Bandwidth: %g (Bytes/sec)\n",
fval);
else
zlog_debug(
" Unidirectional Utilized Bandwidth: %g (Bytes/sec)",
fval);
return TLV_SIZE(tlvh);
}
static u_int16_t show_vty_unknown_tlv(struct vty *vty,
struct tlv_header *tlvh)
{
if (vty != NULL)
vty_out(vty, " Unknown TLV: [type(0x%x), length(0x%x)]\n",
ntohs(tlvh->type), ntohs(tlvh->length));
else
zlog_debug(" Unknown TLV: [type(0x%x), length(0x%x)]",
ntohs(tlvh->type), ntohs(tlvh->length));
return TLV_SIZE(tlvh);
}
static u_int16_t ospf_mpls_te_show_link_subtlv(struct vty *vty,
struct tlv_header *tlvh0,
u_int16_t subtotal,
u_int16_t total)
{
struct tlv_header *tlvh, *next;
u_int16_t sum = subtotal;
for (tlvh = tlvh0; sum < total;
tlvh = (next ? next : TLV_HDR_NEXT(tlvh))) {
next = NULL;
switch (ntohs(tlvh->type)) {
case TE_LINK_SUBTLV_LINK_TYPE:
sum += show_vty_link_subtlv_link_type(vty, tlvh);
break;
case TE_LINK_SUBTLV_LINK_ID:
sum += show_vty_link_subtlv_link_id(vty, tlvh);
break;
case TE_LINK_SUBTLV_LCLIF_IPADDR:
sum += show_vty_link_subtlv_lclif_ipaddr(vty, tlvh);
break;
case TE_LINK_SUBTLV_RMTIF_IPADDR:
sum += show_vty_link_subtlv_rmtif_ipaddr(vty, tlvh);
break;
case TE_LINK_SUBTLV_TE_METRIC:
sum += show_vty_link_subtlv_te_metric(vty, tlvh);
break;
case TE_LINK_SUBTLV_MAX_BW:
sum += show_vty_link_subtlv_max_bw(vty, tlvh);
break;
case TE_LINK_SUBTLV_MAX_RSV_BW:
sum += show_vty_link_subtlv_max_rsv_bw(vty, tlvh);
break;
case TE_LINK_SUBTLV_UNRSV_BW:
sum += show_vty_link_subtlv_unrsv_bw(vty, tlvh);
break;
case TE_LINK_SUBTLV_RSC_CLSCLR:
sum += show_vty_link_subtlv_rsc_clsclr(vty, tlvh);
break;
case TE_LINK_SUBTLV_LRRID:
sum += show_vty_link_subtlv_lrrid(vty, tlvh);
break;
case TE_LINK_SUBTLV_LLRI:
sum += show_vty_link_subtlv_llri(vty, tlvh);
break;
case TE_LINK_SUBTLV_RIP:
sum += show_vty_link_subtlv_rip(vty, tlvh);
break;
case TE_LINK_SUBTLV_RAS:
sum += show_vty_link_subtlv_ras(vty, tlvh);
break;
case TE_LINK_SUBTLV_AV_DELAY:
sum += show_vty_link_subtlv_av_delay(vty, tlvh);
break;
case TE_LINK_SUBTLV_MM_DELAY:
sum += show_vty_link_subtlv_mm_delay(vty, tlvh);
break;
case TE_LINK_SUBTLV_DELAY_VAR:
sum += show_vty_link_subtlv_delay_var(vty, tlvh);
break;
case TE_LINK_SUBTLV_PKT_LOSS:
sum += show_vty_link_subtlv_pkt_loss(vty, tlvh);
break;
case TE_LINK_SUBTLV_RES_BW:
sum += show_vty_link_subtlv_res_bw(vty, tlvh);
break;
case TE_LINK_SUBTLV_AVA_BW:
sum += show_vty_link_subtlv_ava_bw(vty, tlvh);
break;
case TE_LINK_SUBTLV_USE_BW:
sum += show_vty_link_subtlv_use_bw(vty, tlvh);
break;
default:
sum += show_vty_unknown_tlv(vty, tlvh);
break;
}
}
return sum;
}
static void ospf_mpls_te_show_info(struct vty *vty, struct ospf_lsa *lsa)
{
struct lsa_header *lsah = (struct lsa_header *)lsa->data;
struct tlv_header *tlvh, *next;
u_int16_t sum, total;
u_int16_t (*subfunc)(struct vty * vty, struct tlv_header * tlvh,
u_int16_t subtotal, u_int16_t total) = NULL;
sum = 0;
total = ntohs(lsah->length) - OSPF_LSA_HEADER_SIZE;
for (tlvh = TLV_HDR_TOP(lsah); sum < total;
tlvh = (next ? next : TLV_HDR_NEXT(tlvh))) {
if (subfunc != NULL) {
sum = (*subfunc)(vty, tlvh, sum, total);
next = (struct tlv_header *)((char *)tlvh + sum);
subfunc = NULL;
continue;
}
next = NULL;
switch (ntohs(tlvh->type)) {
case TE_TLV_ROUTER_ADDR:
sum += show_vty_router_addr(vty, tlvh);
break;
case TE_TLV_LINK:
sum += show_vty_link_header(vty, tlvh);
subfunc = ospf_mpls_te_show_link_subtlv;
next = TLV_DATA(tlvh);
break;
default:
sum += show_vty_unknown_tlv(vty, tlvh);
break;
}
}
return;
}
static void ospf_mpls_te_config_write_router(struct vty *vty)
{
if (OspfMplsTE.enabled) {
vty_out(vty, " mpls-te on\n");
vty_out(vty, " mpls-te router-address %s\n",
inet_ntoa(OspfMplsTE.router_addr.value));
}
if (OspfMplsTE.inter_as == AS)
vty_out(vty, " mpls-te inter-as as\n");
if (OspfMplsTE.inter_as == Area)
vty_out(vty, " mpls-te inter-as area %s \n",
inet_ntoa(OspfMplsTE.interas_areaid));
return;
}
/*------------------------------------------------------------------------*
* Followings are vty command functions.
*------------------------------------------------------------------------*/
DEFUN (ospf_mpls_te_on,
ospf_mpls_te_on_cmd,
"mpls-te on",
MPLS_TE_STR
"Enable the MPLS-TE functionality\n")
{
VTY_DECLVAR_INSTANCE_CONTEXT(ospf, ospf);
struct listnode *node;
struct mpls_te_link *lp;
if (OspfMplsTE.enabled)
return CMD_SUCCESS;
if (IS_DEBUG_OSPF_EVENT)
zlog_debug("MPLS-TE: OFF -> ON");
OspfMplsTE.enabled = true;
/* Reoriginate RFC3630 & RFC6827 Links */
ospf_mpls_te_foreach_area(ospf_mpls_te_lsa_schedule,
REORIGINATE_THIS_LSA);
/* Reoriginate LSA if INTER-AS is always on */
if (OspfMplsTE.inter_as != Off) {
for (ALL_LIST_ELEMENTS_RO(OspfMplsTE.iflist, node, lp)) {
if (IS_INTER_AS(lp->type)) {
ospf_mpls_te_lsa_schedule(lp,
REORIGINATE_THIS_LSA);
}
}
}
return CMD_SUCCESS;
}
DEFUN (no_ospf_mpls_te,
no_ospf_mpls_te_cmd,
"no mpls-te [on]",
NO_STR
MPLS_TE_STR
"Disable the MPLS-TE functionality\n")
{
VTY_DECLVAR_INSTANCE_CONTEXT(ospf, ospf);
struct listnode *node, *nnode;
struct mpls_te_link *lp;
if (!OspfMplsTE.enabled)
return CMD_SUCCESS;
if (IS_DEBUG_OSPF_EVENT)
zlog_debug("MPLS-TE: ON -> OFF");
OspfMplsTE.enabled = false;
for (ALL_LIST_ELEMENTS(OspfMplsTE.iflist, node, nnode, lp))
if (CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED))
ospf_mpls_te_lsa_schedule(lp, FLUSH_THIS_LSA);
return CMD_SUCCESS;
}
DEFUN (ospf_mpls_te_router_addr,
ospf_mpls_te_router_addr_cmd,
"mpls-te router-address A.B.C.D",
MPLS_TE_STR
"Stable IP address of the advertising router\n"
"MPLS-TE router address in IPv4 address format\n")
{
VTY_DECLVAR_INSTANCE_CONTEXT(ospf, ospf);
int idx_ipv4 = 2;
struct te_tlv_router_addr *ra = &OspfMplsTE.router_addr;
struct in_addr value;
if (!inet_aton(argv[idx_ipv4]->arg, &value)) {
vty_out(vty, "Please specify Router-Addr by A.B.C.D\n");
return CMD_WARNING;
}
if (ntohs(ra->header.type) == 0
|| ntohl(ra->value.s_addr) != ntohl(value.s_addr)) {
struct listnode *node, *nnode;
struct mpls_te_link *lp;
int need_to_reoriginate = 0;
set_mpls_te_router_addr(value);
if (!OspfMplsTE.enabled)
return CMD_SUCCESS;
for (ALL_LIST_ELEMENTS(OspfMplsTE.iflist, node, nnode, lp)) {
if ((lp->area == NULL) || IS_FLOOD_AS(lp->type))
continue;
if (!CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED)) {
need_to_reoriginate = 1;
break;
}
}
for (ALL_LIST_ELEMENTS(OspfMplsTE.iflist, node, nnode, lp)) {
if ((lp->area == NULL) || IS_FLOOD_AS(lp->type))
continue;
if (need_to_reoriginate)
SET_FLAG(lp->flags, LPFLG_LSA_FORCED_REFRESH);
else
ospf_mpls_te_lsa_schedule(lp, REFRESH_THIS_LSA);
}
if (need_to_reoriginate)
ospf_mpls_te_foreach_area(ospf_mpls_te_lsa_schedule,
REORIGINATE_THIS_LSA);
}
return CMD_SUCCESS;
}
static int set_inter_as_mode(struct vty *vty, const char *mode_name,
const char *area_id)
{
enum inter_as_mode mode;
struct listnode *node;
struct mpls_te_link *lp;
int format;
if (OspfMplsTE.enabled) {
/* Read and Check inter_as mode */
if (strcmp(mode_name, "as") == 0)
mode = AS;
else if (strcmp(mode_name, "area") == 0) {
mode = Area;
VTY_GET_OSPF_AREA_ID(OspfMplsTE.interas_areaid, format,
area_id);
} else {
vty_out(vty,
"Unknown mode. Please choose between as or area\n");
return CMD_WARNING;
}
if (IS_DEBUG_OSPF_EVENT)
zlog_debug(
"MPLS-TE: Inter-AS enable with %s flooding support",
mode2text[mode]);
/* Register new callbacks regarding the flooding scope (AS or
* Area) */
if (ospf_mpls_te_register(mode) < 0) {
vty_out(vty,
"Internal error: Unable to register Inter-AS functions\n");
return CMD_WARNING;
}
/* Enable mode and re-originate LSA if needed */
if ((OspfMplsTE.inter_as == Off)
&& (mode != OspfMplsTE.inter_as)) {
OspfMplsTE.inter_as = mode;
/* Re-originate all InterAS-TEv2 LSA */
for (ALL_LIST_ELEMENTS_RO(OspfMplsTE.iflist, node,
lp)) {
if (IS_INTER_AS(lp->type)) {
if (mode == AS)
lp->type |= FLOOD_AS;
else
lp->type |= FLOOD_AREA;
ospf_mpls_te_lsa_schedule(
lp, REORIGINATE_THIS_LSA);
}
}
} else {
vty_out(vty,
"Please change Inter-AS support to disable first before going to mode %s\n",
mode2text[mode]);
return CMD_WARNING;
}
} else {
vty_out(vty, "mpls-te has not been turned on\n");
return CMD_WARNING;
}
return CMD_SUCCESS;
}
DEFUN (ospf_mpls_te_inter_as_as,
ospf_mpls_te_inter_as_cmd,
"mpls-te inter-as as",
MPLS_TE_STR
"Configure MPLS-TE Inter-AS support\n"
"AS native mode self originate INTER_AS LSA with Type 11 (as flooding scope)\n")
{
return set_inter_as_mode(vty, "as", "");
}
DEFUN (ospf_mpls_te_inter_as_area,
ospf_mpls_te_inter_as_area_cmd,
"mpls-te inter-as area <A.B.C.D|(0-4294967295)>",
MPLS_TE_STR
"Configure MPLS-TE Inter-AS support\n"
"AREA native mode self originate INTER_AS LSA with Type 10 (area flooding scope)\n"
"OSPF area ID in IP format\n"
"OSPF area ID as decimal value\n")
{
int idx_ipv4_number = 3;
return set_inter_as_mode(vty, "area", argv[idx_ipv4_number]->arg);
}
DEFUN (no_ospf_mpls_te_inter_as,
no_ospf_mpls_te_inter_as_cmd,
"no mpls-te inter-as",
NO_STR
MPLS_TE_STR
"Disable MPLS-TE Inter-AS support\n")
{
struct listnode *node, *nnode;
struct mpls_te_link *lp;
if (IS_DEBUG_OSPF_EVENT)
zlog_debug("MPLS-TE: Inter-AS support OFF");
if ((OspfMplsTE.enabled)
&& (OspfMplsTE.inter_as != Off)) {
OspfMplsTE.inter_as = Off;
/* Flush all Inter-AS LSA */
for (ALL_LIST_ELEMENTS(OspfMplsTE.iflist, node, nnode, lp))
if (IS_INTER_AS(lp->type)
&& CHECK_FLAG(lp->flags, LPFLG_LSA_ENGAGED))
ospf_mpls_te_lsa_schedule(lp, FLUSH_THIS_LSA);
}
/* Deregister the Callbacks for Inter-AS suport */
ospf_mpls_te_unregister();
return CMD_SUCCESS;
}
DEFUN (show_ip_ospf_mpls_te_router,
show_ip_ospf_mpls_te_router_cmd,
"show ip ospf mpls-te router",
SHOW_STR
IP_STR
OSPF_STR
"MPLS-TE information\n"
"MPLS-TE Router parameters\n")
{
if (OspfMplsTE.enabled) {
vty_out(vty, "--- MPLS-TE router parameters ---\n");
if (ntohs(OspfMplsTE.router_addr.header.type) != 0)
show_vty_router_addr(vty,
&OspfMplsTE.router_addr.header);
else
vty_out(vty, " N/A\n");
}
return CMD_SUCCESS;
}
static void show_mpls_te_link_sub(struct vty *vty, struct interface *ifp)
{
struct mpls_te_link *lp;
if ((OspfMplsTE.enabled) && HAS_LINK_PARAMS(ifp)
&& !if_is_loopback(ifp) && if_is_up(ifp)
&& ((lp = lookup_linkparams_by_ifp(ifp)) != NULL)) {
/* Continue only if interface is not passive or support Inter-AS
* TEv2 */
if (!(ospf_oi_count(ifp) > 0)) {
if (IS_INTER_AS(lp->type)) {
vty_out(vty,
"-- Inter-AS TEv2 link parameters for %s --\n",
ifp->name);
} else {
/* MPLS-TE is not activate on this interface */
/* or this interface is passive and Inter-AS
* TEv2 is not activate */
vty_out(vty,
" %s: MPLS-TE is disabled on this interface\n",
ifp->name);
return;
}
} else {
vty_out(vty, "-- MPLS-TE link parameters for %s --\n",
ifp->name);
}
if (TLV_TYPE(lp->link_type) != 0)
show_vty_link_subtlv_link_type(vty,
&lp->link_type.header);
if (TLV_TYPE(lp->link_id) != 0)
show_vty_link_subtlv_link_id(vty, &lp->link_id.header);
if (TLV_TYPE(lp->lclif_ipaddr) != 0)
show_vty_link_subtlv_lclif_ipaddr(
vty, &lp->lclif_ipaddr.header);
if (TLV_TYPE(lp->rmtif_ipaddr) != 0)
show_vty_link_subtlv_rmtif_ipaddr(
vty, &lp->rmtif_ipaddr.header);
if (TLV_TYPE(lp->rip) != 0)
show_vty_link_subtlv_rip(vty, &lp->rip.header);
if (TLV_TYPE(lp->ras) != 0)
show_vty_link_subtlv_ras(vty, &lp->ras.header);
if (TLV_TYPE(lp->te_metric) != 0)
show_vty_link_subtlv_te_metric(vty,
&lp->te_metric.header);
if (TLV_TYPE(lp->max_bw) != 0)
show_vty_link_subtlv_max_bw(vty, &lp->max_bw.header);
if (TLV_TYPE(lp->max_rsv_bw) != 0)
show_vty_link_subtlv_max_rsv_bw(vty,
&lp->max_rsv_bw.header);
if (TLV_TYPE(lp->unrsv_bw) != 0)
show_vty_link_subtlv_unrsv_bw(vty,
&lp->unrsv_bw.header);
if (TLV_TYPE(lp->rsc_clsclr) != 0)
show_vty_link_subtlv_rsc_clsclr(vty,
&lp->rsc_clsclr.header);
if (TLV_TYPE(lp->av_delay) != 0)
show_vty_link_subtlv_av_delay(vty,
&lp->av_delay.header);
if (TLV_TYPE(lp->mm_delay) != 0)
show_vty_link_subtlv_mm_delay(vty,
&lp->mm_delay.header);
if (TLV_TYPE(lp->delay_var) != 0)
show_vty_link_subtlv_delay_var(vty,
&lp->delay_var.header);
if (TLV_TYPE(lp->pkt_loss) != 0)
show_vty_link_subtlv_pkt_loss(vty,
&lp->pkt_loss.header);
if (TLV_TYPE(lp->res_bw) != 0)
show_vty_link_subtlv_res_bw(vty, &lp->res_bw.header);
if (TLV_TYPE(lp->ava_bw) != 0)
show_vty_link_subtlv_ava_bw(vty, &lp->ava_bw.header);
if (TLV_TYPE(lp->use_bw) != 0)
show_vty_link_subtlv_use_bw(vty, &lp->use_bw.header);
vty_out(vty, "---------------\n\n");
} else {
vty_out(vty, " %s: MPLS-TE is disabled on this interface\n",
ifp->name);
}
return;
}
DEFUN (show_ip_ospf_mpls_te_link,
show_ip_ospf_mpls_te_link_cmd,
"show ip ospf mpls-te interface [INTERFACE]",
SHOW_STR
IP_STR
OSPF_STR
"MPLS-TE information\n"
"Interface information\n"
"Interface name\n")
{
int idx_interface = 5;
struct interface *ifp;
struct listnode *node, *nnode;
/* Show All Interfaces. */
if (argc == 5) {
for (ALL_LIST_ELEMENTS(vrf_iflist(VRF_DEFAULT), node, nnode,
ifp))
show_mpls_te_link_sub(vty, ifp);
}
/* Interface name is specified. */
else {
if ((ifp = if_lookup_by_name(argv[idx_interface]->arg,
VRF_DEFAULT))
== NULL)
vty_out(vty, "No such interface name\n");
else
show_mpls_te_link_sub(vty, ifp);
}
return CMD_SUCCESS;
}
static void ospf_mpls_te_register_vty(void)
{
install_element(VIEW_NODE, &show_ip_ospf_mpls_te_router_cmd);
install_element(VIEW_NODE, &show_ip_ospf_mpls_te_link_cmd);
install_element(OSPF_NODE, &ospf_mpls_te_on_cmd);
install_element(OSPF_NODE, &no_ospf_mpls_te_cmd);
install_element(OSPF_NODE, &ospf_mpls_te_router_addr_cmd);
install_element(OSPF_NODE, &ospf_mpls_te_inter_as_cmd);
install_element(OSPF_NODE, &ospf_mpls_te_inter_as_area_cmd);
install_element(OSPF_NODE, &no_ospf_mpls_te_inter_as_cmd);
return;
}
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