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|
/*
* IS-IS Rout(e)ing protocol - isis_te.c
*
* This is an implementation of RFC5305 & RFC 7810
*
* Copyright (C) 2014 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
*/
#include <zebra.h>
#include <math.h>
#include "linklist.h"
#include "thread.h"
#include "vty.h"
#include "stream.h"
#include "memory.h"
#include "log.h"
#include "prefix.h"
#include "command.h"
#include "hash.h"
#include "if.h"
#include "vrf.h"
#include "checksum.h"
#include "md5.h"
#include "sockunion.h"
#include "network.h"
#include "sbuf.h"
#include "isisd/dict.h"
#include "isisd/isis_constants.h"
#include "isisd/isis_common.h"
#include "isisd/isis_flags.h"
#include "isisd/isis_circuit.h"
#include "isisd/isisd.h"
#include "isisd/isis_lsp.h"
#include "isisd/isis_pdu.h"
#include "isisd/isis_dynhn.h"
#include "isisd/isis_misc.h"
#include "isisd/isis_csm.h"
#include "isisd/isis_adjacency.h"
#include "isisd/isis_spf.h"
#include "isisd/isis_te.h"
/* Global varial for MPLS TE management */
struct isis_mpls_te isisMplsTE;
const char *mode2text[] = {"Disable", "Area", "AS", "Emulate"};
/*------------------------------------------------------------------------*
* Followings are control functions for MPLS-TE parameters management.
*------------------------------------------------------------------------*/
/* Create new MPLS TE Circuit context */
struct mpls_te_circuit *mpls_te_circuit_new(void)
{
struct mpls_te_circuit *mtc;
zlog_debug("ISIS MPLS-TE: Create new MPLS TE Circuit context");
mtc = XCALLOC(MTYPE_ISIS_MPLS_TE, sizeof(struct mpls_te_circuit));
mtc->status = disable;
mtc->type = STD_TE;
mtc->length = 0;
return mtc;
}
/* Copy SUB TLVs parameters into a buffer - No space verification are performed
*/
/* Caller must verify before that there is enough free space in the buffer */
uint8_t add_te_subtlvs(uint8_t *buf, struct mpls_te_circuit *mtc)
{
uint8_t size, *tlvs = buf;
zlog_debug("ISIS MPLS-TE: Add TE Sub TLVs to buffer");
if (mtc == NULL) {
zlog_debug(
"ISIS MPLS-TE: Abort! No MPLS TE Circuit available has been specified");
return 0;
}
/* Create buffer if not provided */
if (buf == NULL) {
zlog_debug("ISIS MPLS-TE: Abort! No Buffer has been specified");
return 0;
}
/* TE_SUBTLV_ADMIN_GRP */
if (SUBTLV_TYPE(mtc->admin_grp) != 0) {
size = SUBTLV_SIZE(&(mtc->admin_grp.header));
memcpy(tlvs, &(mtc->admin_grp), size);
tlvs += size;
}
/* TE_SUBTLV_LLRI */
if (SUBTLV_TYPE(mtc->llri) != 0) {
size = SUBTLV_SIZE(&(mtc->llri.header));
memcpy(tlvs, &(mtc->llri), size);
tlvs += size;
}
/* TE_SUBTLV_LCLIF_IPADDR */
if (SUBTLV_TYPE(mtc->local_ipaddr) != 0) {
size = SUBTLV_SIZE(&(mtc->local_ipaddr.header));
memcpy(tlvs, &(mtc->local_ipaddr), size);
tlvs += size;
}
/* TE_SUBTLV_RMTIF_IPADDR */
if (SUBTLV_TYPE(mtc->rmt_ipaddr) != 0) {
size = SUBTLV_SIZE(&(mtc->rmt_ipaddr.header));
memcpy(tlvs, &(mtc->rmt_ipaddr), size);
tlvs += size;
}
/* TE_SUBTLV_MAX_BW */
if (SUBTLV_TYPE(mtc->max_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->max_bw.header));
memcpy(tlvs, &(mtc->max_bw), size);
tlvs += size;
}
/* TE_SUBTLV_MAX_RSV_BW */
if (SUBTLV_TYPE(mtc->max_rsv_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->max_rsv_bw.header));
memcpy(tlvs, &(mtc->max_rsv_bw), size);
tlvs += size;
}
/* TE_SUBTLV_UNRSV_BW */
if (SUBTLV_TYPE(mtc->unrsv_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->unrsv_bw.header));
memcpy(tlvs, &(mtc->unrsv_bw), size);
tlvs += size;
}
/* TE_SUBTLV_TE_METRIC */
if (SUBTLV_TYPE(mtc->te_metric) != 0) {
size = SUBTLV_SIZE(&(mtc->te_metric.header));
memcpy(tlvs, &(mtc->te_metric), size);
tlvs += size;
}
/* TE_SUBTLV_AV_DELAY */
if (SUBTLV_TYPE(mtc->av_delay) != 0) {
size = SUBTLV_SIZE(&(mtc->av_delay.header));
memcpy(tlvs, &(mtc->av_delay), size);
tlvs += size;
}
/* TE_SUBTLV_MM_DELAY */
if (SUBTLV_TYPE(mtc->mm_delay) != 0) {
size = SUBTLV_SIZE(&(mtc->mm_delay.header));
memcpy(tlvs, &(mtc->mm_delay), size);
tlvs += size;
}
/* TE_SUBTLV_DELAY_VAR */
if (SUBTLV_TYPE(mtc->delay_var) != 0) {
size = SUBTLV_SIZE(&(mtc->delay_var.header));
memcpy(tlvs, &(mtc->delay_var), size);
tlvs += size;
}
/* TE_SUBTLV_PKT_LOSS */
if (SUBTLV_TYPE(mtc->pkt_loss) != 0) {
size = SUBTLV_SIZE(&(mtc->pkt_loss.header));
memcpy(tlvs, &(mtc->pkt_loss), size);
tlvs += size;
}
/* TE_SUBTLV_RES_BW */
if (SUBTLV_TYPE(mtc->res_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->res_bw.header));
memcpy(tlvs, &(mtc->res_bw), size);
tlvs += size;
}
/* TE_SUBTLV_AVA_BW */
if (SUBTLV_TYPE(mtc->ava_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->ava_bw.header));
memcpy(tlvs, &(mtc->ava_bw), size);
tlvs += size;
}
/* TE_SUBTLV_USE_BW */
if (SUBTLV_TYPE(mtc->use_bw) != 0) {
size = SUBTLV_SIZE(&(mtc->use_bw.header));
memcpy(tlvs, &(mtc->use_bw), size);
tlvs += size;
}
/* Add before this line any other parsing of TLV */
(void)tlvs;
/* Update SubTLVs length */
mtc->length = subtlvs_len(mtc);
zlog_debug("ISIS MPLS-TE: Add %d bytes length SubTLVs", mtc->length);
return mtc->length;
}
/* Compute total Sub-TLVs size */
uint8_t subtlvs_len(struct mpls_te_circuit *mtc)
{
int length = 0;
/* Sanity Check */
if (mtc == NULL)
return 0;
/* TE_SUBTLV_ADMIN_GRP */
if (SUBTLV_TYPE(mtc->admin_grp) != 0)
length += SUBTLV_SIZE(&(mtc->admin_grp.header));
/* TE_SUBTLV_LLRI */
if (SUBTLV_TYPE(mtc->llri) != 0)
length += SUBTLV_SIZE(&mtc->llri.header);
/* TE_SUBTLV_LCLIF_IPADDR */
if (SUBTLV_TYPE(mtc->local_ipaddr) != 0)
length += SUBTLV_SIZE(&mtc->local_ipaddr.header);
/* TE_SUBTLV_RMTIF_IPADDR */
if (SUBTLV_TYPE(mtc->rmt_ipaddr) != 0)
length += SUBTLV_SIZE(&mtc->rmt_ipaddr.header);
/* TE_SUBTLV_MAX_BW */
if (SUBTLV_TYPE(mtc->max_bw) != 0)
length += SUBTLV_SIZE(&mtc->max_bw.header);
/* TE_SUBTLV_MAX_RSV_BW */
if (SUBTLV_TYPE(mtc->max_rsv_bw) != 0)
length += SUBTLV_SIZE(&mtc->max_rsv_bw.header);
/* TE_SUBTLV_UNRSV_BW */
if (SUBTLV_TYPE(mtc->unrsv_bw) != 0)
length += SUBTLV_SIZE(&mtc->unrsv_bw.header);
/* TE_SUBTLV_TE_METRIC */
if (SUBTLV_TYPE(mtc->te_metric) != 0)
length += SUBTLV_SIZE(&mtc->te_metric.header);
/* TE_SUBTLV_AV_DELAY */
if (SUBTLV_TYPE(mtc->av_delay) != 0)
length += SUBTLV_SIZE(&mtc->av_delay.header);
/* TE_SUBTLV_MM_DELAY */
if (SUBTLV_TYPE(mtc->mm_delay) != 0)
length += SUBTLV_SIZE(&mtc->mm_delay.header);
/* TE_SUBTLV_DELAY_VAR */
if (SUBTLV_TYPE(mtc->delay_var) != 0)
length += SUBTLV_SIZE(&mtc->delay_var.header);
/* TE_SUBTLV_PKT_LOSS */
if (SUBTLV_TYPE(mtc->pkt_loss) != 0)
length += SUBTLV_SIZE(&mtc->pkt_loss.header);
/* TE_SUBTLV_RES_BW */
if (SUBTLV_TYPE(mtc->res_bw) != 0)
length += SUBTLV_SIZE(&mtc->res_bw.header);
/* TE_SUBTLV_AVA_BW */
if (SUBTLV_TYPE(mtc->ava_bw) != 0)
length += SUBTLV_SIZE(&mtc->ava_bw.header);
/* TE_SUBTLV_USE_BW */
if (SUBTLV_TYPE(mtc->use_bw) != 0)
length += SUBTLV_SIZE(&mtc->use_bw.header);
/* Check that length is lower than the MAXIMUM SUBTLV size i.e. 256 */
if (length > MAX_SUBTLV_SIZE) {
mtc->length = 0;
return 0;
}
mtc->length = (uint8_t)length;
return mtc->length;
}
/* Following are various functions to set MPLS TE parameters */
static void set_circuitparams_admin_grp(struct mpls_te_circuit *mtc,
uint32_t admingrp)
{
SUBTLV_TYPE(mtc->admin_grp) = TE_SUBTLV_ADMIN_GRP;
SUBTLV_LEN(mtc->admin_grp) = SUBTLV_DEF_SIZE;
mtc->admin_grp.value = htonl(admingrp);
return;
}
static void __attribute__((unused))
set_circuitparams_llri(struct mpls_te_circuit *mtc, uint32_t local,
uint32_t remote)
{
SUBTLV_TYPE(mtc->llri) = TE_SUBTLV_LLRI;
SUBTLV_LEN(mtc->llri) = TE_SUBTLV_LLRI_SIZE;
mtc->llri.local = htonl(local);
mtc->llri.remote = htonl(remote);
}
void set_circuitparams_local_ipaddr(struct mpls_te_circuit *mtc,
struct in_addr addr)
{
SUBTLV_TYPE(mtc->local_ipaddr) = TE_SUBTLV_LOCAL_IPADDR;
SUBTLV_LEN(mtc->local_ipaddr) = SUBTLV_DEF_SIZE;
mtc->local_ipaddr.value.s_addr = addr.s_addr;
return;
}
void set_circuitparams_rmt_ipaddr(struct mpls_te_circuit *mtc,
struct in_addr addr)
{
SUBTLV_TYPE(mtc->rmt_ipaddr) = TE_SUBTLV_RMT_IPADDR;
SUBTLV_LEN(mtc->rmt_ipaddr) = SUBTLV_DEF_SIZE;
mtc->rmt_ipaddr.value.s_addr = addr.s_addr;
return;
}
static void set_circuitparams_max_bw(struct mpls_te_circuit *mtc, float fp)
{
SUBTLV_TYPE(mtc->max_bw) = TE_SUBTLV_MAX_BW;
SUBTLV_LEN(mtc->max_bw) = SUBTLV_DEF_SIZE;
mtc->max_bw.value = htonf(fp);
return;
}
static void set_circuitparams_max_rsv_bw(struct mpls_te_circuit *mtc, float fp)
{
SUBTLV_TYPE(mtc->max_rsv_bw) = TE_SUBTLV_MAX_RSV_BW;
SUBTLV_LEN(mtc->max_rsv_bw) = SUBTLV_DEF_SIZE;
mtc->max_rsv_bw.value = htonf(fp);
return;
}
static void set_circuitparams_unrsv_bw(struct mpls_te_circuit *mtc,
int priority, float fp)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->unrsv_bw) = TE_SUBTLV_UNRSV_BW;
SUBTLV_LEN(mtc->unrsv_bw) = TE_SUBTLV_UNRSV_SIZE;
mtc->unrsv_bw.value[priority] = htonf(fp);
return;
}
static void set_circuitparams_te_metric(struct mpls_te_circuit *mtc,
uint32_t te_metric)
{
SUBTLV_TYPE(mtc->te_metric) = TE_SUBTLV_TE_METRIC;
SUBTLV_LEN(mtc->te_metric) = TE_SUBTLV_TE_METRIC_SIZE;
mtc->te_metric.value[0] = (te_metric >> 16) & 0xFF;
mtc->te_metric.value[1] = (te_metric >> 8) & 0xFF;
mtc->te_metric.value[2] = te_metric & 0xFF;
return;
}
static void set_circuitparams_inter_as(struct mpls_te_circuit *mtc,
struct in_addr addr, uint32_t as)
{
/* Set the Remote ASBR IP address and then the associated AS number */
SUBTLV_TYPE(mtc->rip) = TE_SUBTLV_RIP;
SUBTLV_LEN(mtc->rip) = SUBTLV_DEF_SIZE;
mtc->rip.value.s_addr = addr.s_addr;
SUBTLV_TYPE(mtc->ras) = TE_SUBTLV_RAS;
SUBTLV_LEN(mtc->ras) = SUBTLV_DEF_SIZE;
mtc->ras.value = htonl(as);
}
static void unset_circuitparams_inter_as(struct mpls_te_circuit *mtc)
{
/* Reset the Remote ASBR IP address and then the associated AS number */
SUBTLV_TYPE(mtc->rip) = 0;
SUBTLV_LEN(mtc->rip) = 0;
mtc->rip.value.s_addr = 0;
SUBTLV_TYPE(mtc->ras) = 0;
SUBTLV_LEN(mtc->ras) = 0;
mtc->ras.value = 0;
}
static void set_circuitparams_av_delay(struct mpls_te_circuit *mtc,
uint32_t delay, uint8_t anormal)
{
uint32_t tmp;
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->av_delay) = TE_SUBTLV_AV_DELAY;
SUBTLV_LEN(mtc->av_delay) = SUBTLV_DEF_SIZE;
tmp = delay & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
mtc->av_delay.value = htonl(tmp);
return;
}
static void set_circuitparams_mm_delay(struct mpls_te_circuit *mtc,
uint32_t low, uint32_t high,
uint8_t anormal)
{
uint32_t tmp;
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->mm_delay) = TE_SUBTLV_MM_DELAY;
SUBTLV_LEN(mtc->mm_delay) = TE_SUBTLV_MM_DELAY_SIZE;
tmp = low & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
mtc->mm_delay.low = htonl(tmp);
mtc->mm_delay.high = htonl(high);
return;
}
static void set_circuitparams_delay_var(struct mpls_te_circuit *mtc,
uint32_t jitter)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->delay_var) = TE_SUBTLV_DELAY_VAR;
SUBTLV_LEN(mtc->delay_var) = SUBTLV_DEF_SIZE;
mtc->delay_var.value = htonl(jitter & TE_EXT_MASK);
return;
}
static void set_circuitparams_pkt_loss(struct mpls_te_circuit *mtc,
uint32_t loss, uint8_t anormal)
{
uint32_t tmp;
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->pkt_loss) = TE_SUBTLV_PKT_LOSS;
SUBTLV_LEN(mtc->pkt_loss) = SUBTLV_DEF_SIZE;
tmp = loss & TE_EXT_MASK;
if (anormal)
tmp |= TE_EXT_ANORMAL;
mtc->pkt_loss.value = htonl(tmp);
return;
}
static void set_circuitparams_res_bw(struct mpls_te_circuit *mtc, float fp)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->res_bw) = TE_SUBTLV_RES_BW;
SUBTLV_LEN(mtc->res_bw) = SUBTLV_DEF_SIZE;
mtc->res_bw.value = htonf(fp);
return;
}
static void set_circuitparams_ava_bw(struct mpls_te_circuit *mtc, float fp)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->ava_bw) = TE_SUBTLV_AVA_BW;
SUBTLV_LEN(mtc->ava_bw) = SUBTLV_DEF_SIZE;
mtc->ava_bw.value = htonf(fp);
return;
}
static void set_circuitparams_use_bw(struct mpls_te_circuit *mtc, float fp)
{
/* Note that TLV-length field is the size of array. */
SUBTLV_TYPE(mtc->use_bw) = TE_SUBTLV_USE_BW;
SUBTLV_LEN(mtc->use_bw) = SUBTLV_DEF_SIZE;
mtc->use_bw.value = htonf(fp);
return;
}
/* Main initialization / update function of the MPLS TE Circuit context */
/* Call when interface TE Link parameters are modified */
void isis_link_params_update(struct isis_circuit *circuit,
struct interface *ifp)
{
int i;
struct prefix_ipv4 *addr;
struct mpls_te_circuit *mtc;
/* Sanity Check */
if ((circuit == NULL) || (ifp == NULL))
return;
zlog_info("MPLS-TE: Initialize circuit parameters for interface %s",
ifp->name);
/* Check if MPLS TE Circuit context has not been already created */
if (circuit->mtc == NULL)
circuit->mtc = mpls_te_circuit_new();
mtc = circuit->mtc;
/* Fulfil MTC TLV from ifp TE Link parameters */
if (HAS_LINK_PARAMS(ifp)) {
mtc->status = enable;
/* STD_TE metrics */
if (IS_PARAM_SET(ifp->link_params, LP_ADM_GRP))
set_circuitparams_admin_grp(
mtc, ifp->link_params->admin_grp);
else
SUBTLV_TYPE(mtc->admin_grp) = 0;
/* If not already set, register local IP addr from ip_addr list
* if it exists */
if (SUBTLV_TYPE(mtc->local_ipaddr) == 0) {
if (circuit->ip_addrs != NULL
&& listcount(circuit->ip_addrs) != 0) {
addr = (struct prefix_ipv4 *)listgetdata(
(struct listnode *)listhead(
circuit->ip_addrs));
set_circuitparams_local_ipaddr(mtc,
addr->prefix);
}
}
/* If not already set, try to determine Remote IP addr if
* circuit is P2P */
if ((SUBTLV_TYPE(mtc->rmt_ipaddr) == 0)
&& (circuit->circ_type == CIRCUIT_T_P2P)) {
struct isis_adjacency *adj = circuit->u.p2p.neighbor;
if (adj && adj->adj_state == ISIS_ADJ_UP
&& adj->ipv4_address_count) {
set_circuitparams_rmt_ipaddr(
mtc, adj->ipv4_addresses[0]);
}
}
if (IS_PARAM_SET(ifp->link_params, LP_MAX_BW))
set_circuitparams_max_bw(mtc, ifp->link_params->max_bw);
else
SUBTLV_TYPE(mtc->max_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_MAX_RSV_BW))
set_circuitparams_max_rsv_bw(
mtc, ifp->link_params->max_rsv_bw);
else
SUBTLV_TYPE(mtc->max_rsv_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_UNRSV_BW))
for (i = 0; i < MAX_CLASS_TYPE; i++)
set_circuitparams_unrsv_bw(
mtc, i, ifp->link_params->unrsv_bw[i]);
else
SUBTLV_TYPE(mtc->unrsv_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_TE_METRIC))
set_circuitparams_te_metric(
mtc, ifp->link_params->te_metric);
else
SUBTLV_TYPE(mtc->te_metric) = 0;
/* TE metric Extensions */
if (IS_PARAM_SET(ifp->link_params, LP_DELAY))
set_circuitparams_av_delay(
mtc, ifp->link_params->av_delay, 0);
else
SUBTLV_TYPE(mtc->av_delay) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_MM_DELAY))
set_circuitparams_mm_delay(
mtc, ifp->link_params->min_delay,
ifp->link_params->max_delay, 0);
else
SUBTLV_TYPE(mtc->mm_delay) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_DELAY_VAR))
set_circuitparams_delay_var(
mtc, ifp->link_params->delay_var);
else
SUBTLV_TYPE(mtc->delay_var) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_PKT_LOSS))
set_circuitparams_pkt_loss(
mtc, ifp->link_params->pkt_loss, 0);
else
SUBTLV_TYPE(mtc->pkt_loss) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_RES_BW))
set_circuitparams_res_bw(mtc, ifp->link_params->res_bw);
else
SUBTLV_TYPE(mtc->res_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_AVA_BW))
set_circuitparams_ava_bw(mtc, ifp->link_params->ava_bw);
else
SUBTLV_TYPE(mtc->ava_bw) = 0;
if (IS_PARAM_SET(ifp->link_params, LP_USE_BW))
set_circuitparams_use_bw(mtc, ifp->link_params->use_bw);
else
SUBTLV_TYPE(mtc->use_bw) = 0;
/* INTER_AS */
if (IS_PARAM_SET(ifp->link_params, LP_RMT_AS))
set_circuitparams_inter_as(mtc,
ifp->link_params->rmt_ip,
ifp->link_params->rmt_as);
else
/* reset inter-as TE params */
unset_circuitparams_inter_as(mtc);
/* Compute total length of SUB TLVs */
mtc->length = subtlvs_len(mtc);
} else
mtc->status = disable;
/* Finally Update LSP */
#if 0
if (IS_MPLS_TE(isisMplsTE) && circuit->area)
lsp_regenerate_schedule (circuit->area, circuit->is_type, 0);
#endif
return;
}
void isis_mpls_te_update(struct interface *ifp)
{
struct isis_circuit *circuit;
/* Sanity Check */
if (ifp == NULL)
return;
/* Get circuit context from interface */
if ((circuit = circuit_scan_by_ifp(ifp)) == NULL)
return;
/* Update TE TLVs ... */
isis_link_params_update(circuit, ifp);
/* ... and LSP */
if (IS_MPLS_TE(isisMplsTE) && circuit->area)
lsp_regenerate_schedule(circuit->area, circuit->is_type, 0);
return;
}
/*------------------------------------------------------------------------*
* Followings are vty session control functions.
*------------------------------------------------------------------------*/
static uint8_t print_subtlv_admin_grp(struct sbuf *buf, int indent,
struct te_subtlv_admin_grp *tlv)
{
sbuf_push(buf, indent, "Administrative Group: 0x%" PRIx32 "\n",
ntohl(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_llri(struct sbuf *buf, int indent,
struct te_subtlv_llri *tlv)
{
sbuf_push(buf, indent, "Link Local ID: %" PRIu32 "\n",
ntohl(tlv->local));
sbuf_push(buf, indent, "Link Remote ID: %" PRIu32 "\n",
ntohl(tlv->remote));
return (SUBTLV_HDR_SIZE + TE_SUBTLV_LLRI_SIZE);
}
static uint8_t print_subtlv_local_ipaddr(struct sbuf *buf, int indent,
struct te_subtlv_local_ipaddr *tlv)
{
sbuf_push(buf, indent, "Local Interface IP Address(es): %s\n",
inet_ntoa(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_rmt_ipaddr(struct sbuf *buf, int indent,
struct te_subtlv_rmt_ipaddr *tlv)
{
sbuf_push(buf, indent, "Remote Interface IP Address(es): %s\n",
inet_ntoa(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_max_bw(struct sbuf *buf, int indent,
struct te_subtlv_max_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent, "Maximum Bandwidth: %g (Bytes/sec)\n", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_max_rsv_bw(struct sbuf *buf, int indent,
struct te_subtlv_max_rsv_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent, "Maximum Reservable Bandwidth: %g (Bytes/sec)\n",
fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_unrsv_bw(struct sbuf *buf, int indent,
struct te_subtlv_unrsv_bw *tlv)
{
float fval1, fval2;
int i;
sbuf_push(buf, indent, "Unreserved Bandwidth:\n");
for (i = 0; i < MAX_CLASS_TYPE; i += 2) {
fval1 = ntohf(tlv->value[i]);
fval2 = ntohf(tlv->value[i + 1]);
sbuf_push(buf, indent + 2,
"[%d]: %g (Bytes/sec),\t[%d]: %g (Bytes/sec)\n", i,
fval1, i + 1, fval2);
}
return (SUBTLV_HDR_SIZE + TE_SUBTLV_UNRSV_SIZE);
}
static uint8_t print_subtlv_te_metric(struct sbuf *buf, int indent,
struct te_subtlv_te_metric *tlv)
{
uint32_t te_metric;
te_metric = tlv->value[2] | tlv->value[1] << 8 | tlv->value[0] << 16;
sbuf_push(buf, indent, "Traffic Engineering Metric: %u\n", te_metric);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_ras(struct sbuf *buf, int indent,
struct te_subtlv_ras *tlv)
{
sbuf_push(buf, indent, "Inter-AS TE Remote AS number: %" PRIu32 "\n",
ntohl(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_rip(struct sbuf *buf, int indent,
struct te_subtlv_rip *tlv)
{
sbuf_push(buf, indent, "Inter-AS TE Remote ASBR IP address: %s\n",
inet_ntoa(tlv->value));
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_av_delay(struct sbuf *buf, int indent,
struct te_subtlv_av_delay *tlv)
{
uint32_t delay;
uint32_t A;
delay = (uint32_t)ntohl(tlv->value) & TE_EXT_MASK;
A = (uint32_t)ntohl(tlv->value) & TE_EXT_ANORMAL;
sbuf_push(buf, indent,
"%s Average Link Delay: %" PRIu32 " (micro-sec)\n",
A ? "Anomalous" : "Normal", delay);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_mm_delay(struct sbuf *buf, int indent,
struct te_subtlv_mm_delay *tlv)
{
uint32_t low, high;
uint32_t A;
low = (uint32_t)ntohl(tlv->low) & TE_EXT_MASK;
A = (uint32_t)ntohl(tlv->low) & TE_EXT_ANORMAL;
high = (uint32_t)ntohl(tlv->high) & TE_EXT_MASK;
sbuf_push(buf, indent, "%s Min/Max Link Delay: %" PRIu32 " / %" PRIu32 " (micro-sec)\n",
A ? "Anomalous" : "Normal", low, high);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_delay_var(struct sbuf *buf, int indent,
struct te_subtlv_delay_var *tlv)
{
uint32_t jitter;
jitter = (uint32_t)ntohl(tlv->value) & TE_EXT_MASK;
sbuf_push(buf, indent, "Delay Variation: %" PRIu32 " (micro-sec)\n",
jitter);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_pkt_loss(struct sbuf *buf, int indent,
struct te_subtlv_pkt_loss *tlv)
{
uint32_t loss;
uint32_t A;
float fval;
loss = (uint32_t)ntohl(tlv->value) & TE_EXT_MASK;
fval = (float)(loss * LOSS_PRECISION);
A = (uint32_t)ntohl(tlv->value) & TE_EXT_ANORMAL;
sbuf_push(buf, indent, "%s Link Packet Loss: %g (%%)\n",
A ? "Anomalous" : "Normal", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_res_bw(struct sbuf *buf, int indent,
struct te_subtlv_res_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent,
"Unidirectional Residual Bandwidth: %g (Bytes/sec)\n", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_ava_bw(struct sbuf *buf, int indent,
struct te_subtlv_ava_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent,
"Unidirectional Available Bandwidth: %g (Bytes/sec)\n", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_subtlv_use_bw(struct sbuf *buf, int indent,
struct te_subtlv_use_bw *tlv)
{
float fval;
fval = ntohf(tlv->value);
sbuf_push(buf, indent,
"Unidirectional Utilized Bandwidth: %g (Bytes/sec)\n", fval);
return (SUBTLV_HDR_SIZE + SUBTLV_DEF_SIZE);
}
static uint8_t print_unknown_tlv(struct sbuf *buf, int indent,
struct subtlv_header *tlvh)
{
int i, rtn;
uint8_t *v = (uint8_t *)tlvh;
if (tlvh->length != 0) {
sbuf_push(buf, indent,
"Unknown TLV: [type(%#.2x), length(%#.2x)]\n",
tlvh->type, tlvh->length);
sbuf_push(buf, indent + 2, "Dump: [00]");
rtn = 1; /* initialize end of line counter */
for (i = 0; i < tlvh->length; i++) {
sbuf_push(buf, 0, " %#.2x", v[i]);
if (rtn == 8) {
sbuf_push(buf, 0, "\n");
sbuf_push(buf, indent + 8, "[%.2x]", i + 1);
rtn = 1;
} else
rtn++;
}
sbuf_push(buf, 0, "\n");
} else {
sbuf_push(buf, indent,
"Unknown TLV: [type(%#.2x), length(%#.2x)]\n",
tlvh->type, tlvh->length);
}
return SUBTLV_SIZE(tlvh);
}
/* Main Show function */
void mpls_te_print_detail(struct sbuf *buf, int indent,
uint8_t *subtlvs, uint8_t subtlv_len)
{
struct subtlv_header *tlvh = (struct subtlv_header *)subtlvs;
uint16_t sum = 0;
for (; sum < subtlv_len;
tlvh = (struct subtlv_header *)(subtlvs + sum)) {
if (subtlv_len - sum < SUBTLV_SIZE(tlvh)) {
sbuf_push(buf, indent, "Available data %" PRIu8 " is less than TLV size %u!\n",
subtlv_len - sum, SUBTLV_SIZE(tlvh));
return;
}
switch (tlvh->type) {
case TE_SUBTLV_ADMIN_GRP:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Administrative Group!\n");
return;
}
sum += print_subtlv_admin_grp(buf, indent,
(struct te_subtlv_admin_grp *)tlvh);
break;
case TE_SUBTLV_LLRI:
if (tlvh->length != TE_SUBTLV_LLRI_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Link ID!\n");
return;
}
sum += print_subtlv_llri(buf, indent,
(struct te_subtlv_llri *)tlvh);
break;
case TE_SUBTLV_LOCAL_IPADDR:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Local IP address!\n");
return;
}
sum += print_subtlv_local_ipaddr(buf, indent,
(struct te_subtlv_local_ipaddr *)tlvh);
break;
case TE_SUBTLV_RMT_IPADDR:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Remote Interface address!\n");
return;
}
sum += print_subtlv_rmt_ipaddr(buf, indent,
(struct te_subtlv_rmt_ipaddr *)tlvh);
break;
case TE_SUBTLV_MAX_BW:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Maximum Bandwidth!\n");
return;
}
sum += print_subtlv_max_bw(buf, indent,
(struct te_subtlv_max_bw *)tlvh);
break;
case TE_SUBTLV_MAX_RSV_BW:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Maximum Reservable Bandwidth!\n");
return;
}
sum += print_subtlv_max_rsv_bw(buf, indent,
(struct te_subtlv_max_rsv_bw *)tlvh);
break;
case TE_SUBTLV_UNRSV_BW:
if (tlvh->length != TE_SUBTLV_UNRSV_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Unreserved Bandwidth!\n");
return;
}
sum += print_subtlv_unrsv_bw(buf, indent,
(struct te_subtlv_unrsv_bw *)tlvh);
break;
case TE_SUBTLV_TE_METRIC:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Traffic Engineering Metric!\n");
return;
}
sum += print_subtlv_te_metric(buf, indent,
(struct te_subtlv_te_metric *)tlvh);
break;
case TE_SUBTLV_RAS:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Remote AS number!\n");
return;
}
sum += print_subtlv_ras(buf, indent,
(struct te_subtlv_ras *)tlvh);
break;
case TE_SUBTLV_RIP:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Remote ASBR IP Address!\n");
return;
}
sum += print_subtlv_rip(buf, indent,
(struct te_subtlv_rip *)tlvh);
break;
case TE_SUBTLV_AV_DELAY:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Average Link Delay!\n");
return;
}
sum += print_subtlv_av_delay(buf, indent,
(struct te_subtlv_av_delay *)tlvh);
break;
case TE_SUBTLV_MM_DELAY:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Min/Max Link Delay!\n");
return;
}
sum += print_subtlv_mm_delay(buf, indent,
(struct te_subtlv_mm_delay *)tlvh);
break;
case TE_SUBTLV_DELAY_VAR:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Delay Variation!\n");
return;
}
sum += print_subtlv_delay_var(buf, indent,
(struct te_subtlv_delay_var *)tlvh);
break;
case TE_SUBTLV_PKT_LOSS:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Link Packet Loss!\n");
return;
}
sum += print_subtlv_pkt_loss(buf, indent,
(struct te_subtlv_pkt_loss *)tlvh);
break;
case TE_SUBTLV_RES_BW:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Unidirectional Residual Bandwidth!\n");
return;
}
sum += print_subtlv_res_bw(buf, indent,
(struct te_subtlv_res_bw *)tlvh);
break;
case TE_SUBTLV_AVA_BW:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Unidirectional Available Bandwidth!\n");
return;
}
sum += print_subtlv_ava_bw(buf, indent,
(struct te_subtlv_ava_bw *)tlvh);
break;
case TE_SUBTLV_USE_BW:
if (tlvh->length != SUBTLV_DEF_SIZE) {
sbuf_push(buf, indent, "TLV size does not match expected size for Unidirectional Utilized Bandwidth!\n");
return;
}
sum += print_subtlv_use_bw(buf, indent,
(struct te_subtlv_use_bw *)tlvh);
break;
default:
sum += print_unknown_tlv(buf, indent, tlvh);
break;
}
}
return;
}
/* Specific MPLS TE router parameters write function */
void isis_mpls_te_config_write_router(struct vty *vty)
{
if (IS_MPLS_TE(isisMplsTE)) {
vty_out(vty, " mpls-te on\n");
vty_out(vty, " mpls-te router-address %s\n",
inet_ntoa(isisMplsTE.router_id));
}
return;
}
/*------------------------------------------------------------------------*
* Followings are vty command functions.
*------------------------------------------------------------------------*/
#ifndef FABRICD
/* Search MPLS TE Circuit context from Interface */
static struct mpls_te_circuit *lookup_mpls_params_by_ifp(struct interface *ifp)
{
struct isis_circuit *circuit;
if ((circuit = circuit_scan_by_ifp(ifp)) == NULL)
return NULL;
return circuit->mtc;
}
DEFUN (show_isis_mpls_te_router,
show_isis_mpls_te_router_cmd,
"show " PROTO_NAME " mpls-te router",
SHOW_STR
PROTO_HELP
MPLS_TE_STR
"Router information\n")
{
if (IS_MPLS_TE(isisMplsTE)) {
vty_out(vty, "--- MPLS-TE router parameters ---\n");
if (ntohs(isisMplsTE.router_id.s_addr) != 0)
vty_out(vty, " Router-Address: %s\n",
inet_ntoa(isisMplsTE.router_id));
else
vty_out(vty, " N/A\n");
} else
vty_out(vty, " MPLS-TE is disable on this router\n");
return CMD_SUCCESS;
}
static void show_mpls_te_sub(struct vty *vty, struct interface *ifp)
{
struct mpls_te_circuit *mtc;
struct sbuf buf;
sbuf_init(&buf, NULL, 0);
if ((IS_MPLS_TE(isisMplsTE))
&& ((mtc = lookup_mpls_params_by_ifp(ifp)) != NULL)) {
/* Continue only if interface is not passive or support Inter-AS
* TEv2 */
if (mtc->status != enable) {
if (IS_INTER_AS(mtc->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);
}
sbuf_reset(&buf);
print_subtlv_admin_grp(&buf, 4, &mtc->admin_grp);
if (SUBTLV_TYPE(mtc->local_ipaddr) != 0)
print_subtlv_local_ipaddr(&buf, 4, &mtc->local_ipaddr);
if (SUBTLV_TYPE(mtc->rmt_ipaddr) != 0)
print_subtlv_rmt_ipaddr(&buf, 4, &mtc->rmt_ipaddr);
print_subtlv_max_bw(&buf, 4, &mtc->max_bw);
print_subtlv_max_rsv_bw(&buf, 4, &mtc->max_rsv_bw);
print_subtlv_unrsv_bw(&buf, 4, &mtc->unrsv_bw);
print_subtlv_te_metric(&buf, 4, &mtc->te_metric);
if (IS_INTER_AS(mtc->type)) {
if (SUBTLV_TYPE(mtc->ras) != 0)
print_subtlv_ras(&buf, 4, &mtc->ras);
if (SUBTLV_TYPE(mtc->rip) != 0)
print_subtlv_rip(&buf, 4, &mtc->rip);
}
print_subtlv_av_delay(&buf, 4, &mtc->av_delay);
print_subtlv_mm_delay(&buf, 4, &mtc->mm_delay);
print_subtlv_delay_var(&buf, 4, &mtc->delay_var);
print_subtlv_pkt_loss(&buf, 4, &mtc->pkt_loss);
print_subtlv_res_bw(&buf, 4, &mtc->res_bw);
print_subtlv_ava_bw(&buf, 4, &mtc->ava_bw);
print_subtlv_use_bw(&buf, 4, &mtc->use_bw);
vty_multiline(vty, "", "%s", sbuf_buf(&buf));
vty_out(vty, "---------------\n\n");
} else {
vty_out(vty, " %s: MPLS-TE is disabled on this interface\n",
ifp->name);
}
sbuf_free(&buf);
return;
}
DEFUN (show_isis_mpls_te_interface,
show_isis_mpls_te_interface_cmd,
"show " PROTO_NAME " mpls-te interface [INTERFACE]",
SHOW_STR
PROTO_HELP
MPLS_TE_STR
"Interface information\n"
"Interface name\n")
{
struct vrf *vrf = vrf_lookup_by_id(VRF_DEFAULT);
int idx_interface = 4;
struct interface *ifp;
/* Show All Interfaces. */
if (argc == 4) {
FOR_ALL_INTERFACES (vrf, ifp)
show_mpls_te_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_sub(vty, ifp);
}
return CMD_SUCCESS;
}
#endif
/* Initialize MPLS_TE */
void isis_mpls_te_init(void)
{
zlog_debug("ISIS MPLS-TE: Initialize");
/* Initialize MPLS_TE structure */
isisMplsTE.status = disable;
isisMplsTE.level = 0;
isisMplsTE.inter_as = off;
isisMplsTE.interas_areaid.s_addr = 0;
isisMplsTE.cir_list = list_new();
isisMplsTE.router_id.s_addr = 0;
#ifndef FABRICD
/* Register new VTY commands */
install_element(VIEW_NODE, &show_isis_mpls_te_router_cmd);
install_element(VIEW_NODE, &show_isis_mpls_te_interface_cmd);
#endif
return;
}
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