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ospf_te.c
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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"
#include "ospfd/ospf_errors.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) {
flog_warn(
EC_OSPF_OPAQUE_REGISTRATION,
"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;
uint8_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) {
flog_warn(
EC_OSPF_OPAQUE_REGISTRATION,
"ospf_router_info_init: Failed to register Inter-AS functions");
return rc;
}
return rc;
}
static int ospf_mpls_te_unregister(void)
{
uint8_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);
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;
}
void ospf_mpls_te_finish(void)
{
// list_delete_all_node(OspfMplsTE.iflist);
OspfMplsTE.enabled = false;
OspfMplsTE.inter_as = Off;
}
/*------------------------------------------------------------------------*
* 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 uint32_t get_mpls_te_instance_value(void)
{
static uint32_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_info("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)
{
uint16_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,
uint32_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,
uint32_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, uint32_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, uint32_t local,
uint32_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, uint32_t delay,
uint8_t anormal)
{
uint32_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, uint32_t low,
uint32_t high, uint8_t anormal)
{
uint32_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, uint32_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, uint32_t loss,
uint8_t anormal)
{
uint32_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_by_vrf_id(VRF_DEFAULT),
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_debug(
"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) {
flog_warn(
EC_OSPF_TE_UNEXPECTED,
"MPLS-TE(is_mandated_params_set) Missing Router Address");
return rc;
}
if (ntohs(lp->link_type.header.type) == 0) {
flog_warn(EC_OSPF_TE_UNEXPECTED,
"MPLS-TE(is_mandated_params_set) Missing Link Type");
return rc;
}
if (!IS_INTER_AS(lp->type) && (ntohs(lp->link_id.header.type) == 0)) {
flog_warn(EC_OSPF_TE_UNEXPECTED,
"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;
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)
return 0;
new = XCALLOC(MTYPE_OSPF_MPLS_TE, sizeof(struct mpls_te_link));
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 */
return 0;
}
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);
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) {
flog_warn(
EC_OSPF_TE_UNEXPECTED,
"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) {
flog_warn(
EC_OSPF_TE_UNEXPECTED,
"ospf_mpls_te_ism_change: Cannot get linkparams from OI(%s)?",
IF_NAME(oi));
return;
}
if (oi->area == NULL || oi->area->ospf == NULL) {
flog_warn(
EC_OSPF_TE_UNEXPECTED,
"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? */
flog_warn(
EC_OSPF_TE_UNEXPECTED,
"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);