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isisd.c
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isisd.c
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* IS-IS Rout(e)ing protocol - isisd.c
*
* Copyright (C) 2001,2002 Sampo Saaristo
* Tampere University of Technology
* Institute of Communications Engineering
*/
#include <zebra.h>
#include "frrevent.h"
#include "vty.h"
#include "command.h"
#include "log.h"
#include "memory.h"
#include "time.h"
#include "linklist.h"
#include "if.h"
#include "hash.h"
#include "filter.h"
#include "plist.h"
#include "stream.h"
#include "prefix.h"
#include "table.h"
#include "qobj.h"
#include "zclient.h"
#include "vrf.h"
#include "spf_backoff.h"
#include "flex_algo.h"
#include "lib/northbound_cli.h"
#include "bfd.h"
#include "isisd/isis_constants.h"
#include "isisd/isis_common.h"
#include "isisd/isis_flags.h"
#include "isisd/isis_circuit.h"
#include "isisd/isis_csm.h"
#include "isisd/isisd.h"
#include "isisd/isis_dynhn.h"
#include "isisd/isis_adjacency.h"
#include "isisd/isis_pdu.h"
#include "isisd/isis_misc.h"
#include "isisd/isis_constants.h"
#include "isisd/isis_lsp.h"
#include "isisd/isis_spf.h"
#include "isisd/isis_route.h"
#include "isisd/isis_zebra.h"
#include "isisd/isis_events.h"
#include "isisd/isis_te.h"
#include "isisd/isis_mt.h"
#include "isisd/isis_sr.h"
#include "isisd/isis_flex_algo.h"
#include "isisd/fabricd.h"
#include "isisd/isis_nb.h"
/* For debug statement. */
unsigned long debug_adj_pkt;
unsigned long debug_snp_pkt;
unsigned long debug_update_pkt;
unsigned long debug_spf_events;
unsigned long debug_rte_events;
unsigned long debug_events;
unsigned long debug_pkt_dump;
unsigned long debug_lsp_gen;
unsigned long debug_lsp_sched;
unsigned long debug_flooding;
unsigned long debug_bfd;
unsigned long debug_tx_queue;
unsigned long debug_sr;
unsigned long debug_ldp_sync;
unsigned long debug_lfa;
unsigned long debug_te;
DEFINE_MGROUP(ISISD, "isisd");
DEFINE_MTYPE_STATIC(ISISD, ISIS, "ISIS process");
DEFINE_MTYPE_STATIC(ISISD, ISIS_NAME, "ISIS process name");
DEFINE_MTYPE_STATIC(ISISD, ISIS_AREA, "ISIS area");
DEFINE_MTYPE(ISISD, ISIS_AREA_ADDR, "ISIS area address");
DEFINE_MTYPE(ISISD, ISIS_ACL_NAME, "ISIS access-list name");
DEFINE_MTYPE(ISISD, ISIS_PLIST_NAME, "ISIS prefix-list name");
DEFINE_QOBJ_TYPE(isis_area);
/* ISIS process wide configuration. */
static struct isis_master isis_master;
/* ISIS process wide configuration pointer to export. */
struct isis_master *im;
/* ISIS config processing thread */
struct event *t_isis_cfg;
#ifndef FABRICD
DEFINE_HOOK(isis_hook_db_overload, (const struct isis_area *area), (area));
#endif /* ifndef FABRICD */
/*
* Prototypes.
*/
int isis_area_get(struct vty *, const char *);
int area_net_title(struct vty *, const char *);
int area_clear_net_title(struct vty *, const char *);
int show_isis_interface_common(struct vty *, struct json_object *json,
const char *ifname, char, const char *vrf_name,
bool all_vrf);
int show_isis_interface_common_vty(struct vty *, const char *ifname, char,
const char *vrf_name, bool all_vrf);
int show_isis_interface_common_json(struct json_object *json,
const char *ifname, char,
const char *vrf_name, bool all_vrf);
int show_isis_neighbor_common(struct vty *, struct json_object *json,
const char *id, char, const char *vrf_name,
bool all_vrf);
int clear_isis_neighbor_common(struct vty *, const char *id,
const char *vrf_name, bool all_vrf);
/* Link ISIS instance to VRF. */
void isis_vrf_link(struct isis *isis, struct vrf *vrf)
{
isis->vrf_id = vrf->vrf_id;
if (vrf->info != (void *)isis)
vrf->info = (void *)isis;
}
/* Unlink ISIS instance to VRF. */
void isis_vrf_unlink(struct isis *isis, struct vrf *vrf)
{
if (vrf->info == (void *)isis)
vrf->info = NULL;
isis->vrf_id = VRF_UNKNOWN;
}
struct isis *isis_lookup_by_vrfid(vrf_id_t vrf_id)
{
struct isis *isis;
struct listnode *node;
for (ALL_LIST_ELEMENTS_RO(im->isis, node, isis))
if (isis->vrf_id == vrf_id)
return isis;
return NULL;
}
struct isis *isis_lookup_by_vrfname(const char *vrfname)
{
struct isis *isis;
struct listnode *node;
for (ALL_LIST_ELEMENTS_RO(im->isis, node, isis))
if (isis->name && vrfname && strcmp(isis->name, vrfname) == 0)
return isis;
return NULL;
}
struct isis *isis_lookup_by_sysid(const uint8_t *sysid)
{
struct isis *isis;
struct listnode *node;
for (ALL_LIST_ELEMENTS_RO(im->isis, node, isis))
if (!memcmp(isis->sysid, sysid, ISIS_SYS_ID_LEN))
return isis;
return NULL;
}
void isis_master_init(struct event_loop *master)
{
memset(&isis_master, 0, sizeof(isis_master));
im = &isis_master;
im->isis = list_new();
im->master = master;
}
struct isis *isis_new(const char *vrf_name)
{
struct vrf *vrf;
struct isis *isis;
isis = XCALLOC(MTYPE_ISIS, sizeof(struct isis));
isis->name = XSTRDUP(MTYPE_ISIS_NAME, vrf_name);
vrf = vrf_lookup_by_name(vrf_name);
if (vrf)
isis_vrf_link(isis, vrf);
else
isis->vrf_id = VRF_UNKNOWN;
isis_zebra_vrf_register(isis);
if (IS_DEBUG_EVENTS)
zlog_debug(
"%s: Create new isis instance with vrf_name %s vrf_id %u",
__func__, isis->name, isis->vrf_id);
/*
* Default values
*/
isis->max_area_addrs = ISIS_DEFAULT_MAX_AREA_ADDRESSES;
isis->process_id = getpid();
isis->router_id = 0;
isis->area_list = list_new();
isis->uptime = time(NULL);
isis->snmp_notifications = 1;
dyn_cache_init(isis);
listnode_add(im->isis, isis);
return isis;
}
void isis_finish(struct isis *isis)
{
struct isis_area *area;
struct listnode *node, *nnode;
for (ALL_LIST_ELEMENTS(isis->area_list, node, nnode, area))
isis_area_destroy(area);
struct vrf *vrf = NULL;
listnode_delete(im->isis, isis);
isis_zebra_vrf_deregister(isis);
vrf = vrf_lookup_by_name(isis->name);
if (vrf)
isis_vrf_unlink(isis, vrf);
XFREE(MTYPE_ISIS_NAME, isis->name);
isis_redist_free(isis);
list_delete(&isis->area_list);
dyn_cache_finish(isis);
XFREE(MTYPE_ISIS, isis);
}
void isis_area_add_circuit(struct isis_area *area, struct isis_circuit *circuit)
{
isis_csm_state_change(ISIS_ENABLE, circuit, area);
area->ip_circuits += circuit->ip_router;
area->ipv6_circuits += circuit->ipv6_router;
area->lfa_protected_links[0] += circuit->lfa_protection[0];
area->rlfa_protected_links[0] += circuit->rlfa_protection[0];
area->tilfa_protected_links[0] += circuit->tilfa_protection[0];
area->lfa_protected_links[1] += circuit->lfa_protection[1];
area->rlfa_protected_links[1] += circuit->rlfa_protection[1];
area->tilfa_protected_links[1] += circuit->tilfa_protection[1];
}
void isis_area_del_circuit(struct isis_area *area, struct isis_circuit *circuit)
{
area->ip_circuits -= circuit->ip_router;
area->ipv6_circuits -= circuit->ipv6_router;
area->lfa_protected_links[0] -= circuit->lfa_protection[0];
area->rlfa_protected_links[0] -= circuit->rlfa_protection[0];
area->tilfa_protected_links[0] -= circuit->tilfa_protection[0];
area->lfa_protected_links[1] -= circuit->lfa_protection[1];
area->rlfa_protected_links[1] -= circuit->rlfa_protection[1];
area->tilfa_protected_links[1] -= circuit->tilfa_protection[1];
isis_csm_state_change(ISIS_DISABLE, circuit, area);
}
static void delete_area_addr(void *arg)
{
struct iso_address *addr = (struct iso_address *)arg;
XFREE(MTYPE_ISIS_AREA_ADDR, addr);
}
struct isis_area *isis_area_create(const char *area_tag, const char *vrf_name)
{
struct isis_area *area;
struct isis *isis = NULL;
struct vrf *vrf = NULL;
struct interface *ifp;
struct isis_circuit *circuit;
area = XCALLOC(MTYPE_ISIS_AREA, sizeof(struct isis_area));
if (!vrf_name)
vrf_name = VRF_DEFAULT_NAME;
vrf = vrf_lookup_by_name(vrf_name);
isis = isis_lookup_by_vrfname(vrf_name);
if (isis == NULL)
isis = isis_new(vrf_name);
listnode_add(isis->area_list, area);
area->isis = isis;
/*
* Fabricd runs only as level-2.
* For IS-IS, the default is level-1-2
*/
if (fabricd)
area->is_type = IS_LEVEL_2;
else
area->is_type = yang_get_default_enum(
"/frr-isisd:isis/instance/is-type");
/*
* intialize the databases
*/
if (area->is_type & IS_LEVEL_1)
lsp_db_init(&area->lspdb[0]);
if (area->is_type & IS_LEVEL_2)
lsp_db_init(&area->lspdb[1]);
#ifndef FABRICD
/* Flex-Algo */
area->flex_algos = flex_algos_alloc(isis_flex_algo_data_alloc,
isis_flex_algo_data_free);
#endif /* ifndef FABRICD */
spftree_area_init(area);
area->circuit_list = list_new();
area->adjacency_list = list_new();
area->area_addrs = list_new();
area->area_addrs->del = delete_area_addr;
if (!CHECK_FLAG(im->options, F_ISIS_UNIT_TEST))
event_add_timer(master, lsp_tick, area, 1, &area->t_tick);
flags_initialize(&area->flags);
isis_sr_area_init(area);
isis_srv6_area_init(area);
/*
* Default values
*/
#ifndef FABRICD
enum isis_metric_style default_style;
area->max_lsp_lifetime[0] = yang_get_default_uint16(
"/frr-isisd:isis/instance/lsp/timers/level-1/maximum-lifetime");
area->max_lsp_lifetime[1] = yang_get_default_uint16(
"/frr-isisd:isis/instance/lsp/timers/level-2/maximum-lifetime");
area->lsp_refresh[0] = yang_get_default_uint16(
"/frr-isisd:isis/instance/lsp/timers/level-1/refresh-interval");
area->lsp_refresh[1] = yang_get_default_uint16(
"/frr-isisd:isis/instance/lsp/timers/level-2/refresh-interval");
area->lsp_gen_interval[0] = yang_get_default_uint16(
"/frr-isisd:isis/instance/lsp/timers/level-1/generation-interval");
area->lsp_gen_interval[1] = yang_get_default_uint16(
"/frr-isisd:isis/instance/lsp/timers/level-2/generation-interval");
area->min_spf_interval[0] = yang_get_default_uint16(
"/frr-isisd:isis/instance/spf/minimum-interval/level-1");
area->min_spf_interval[1] = yang_get_default_uint16(
"/frr-isisd:isis/instance/spf/minimum-interval/level-1");
area->dynhostname = yang_get_default_bool(
"/frr-isisd:isis/instance/dynamic-hostname");
default_style =
yang_get_default_enum("/frr-isisd:isis/instance/metric-style");
area->oldmetric = default_style == ISIS_WIDE_METRIC ? 0 : 1;
area->newmetric = default_style == ISIS_NARROW_METRIC ? 0 : 1;
area->lsp_frag_threshold = 90; /* not currently configurable */
area->lsp_mtu =
yang_get_default_uint16("/frr-isisd:isis/instance/lsp/mtu");
area->lfa_load_sharing[0] = yang_get_default_bool(
"/frr-isisd:isis/instance/fast-reroute/level-1/lfa/load-sharing");
area->lfa_load_sharing[1] = yang_get_default_bool(
"/frr-isisd:isis/instance/fast-reroute/level-2/lfa/load-sharing");
area->attached_bit_send =
yang_get_default_bool("/frr-isisd:isis/instance/attach-send");
area->attached_bit_rcv_ignore = yang_get_default_bool(
"/frr-isisd:isis/instance/attach-receive-ignore");
#else
area->max_lsp_lifetime[0] = DEFAULT_LSP_LIFETIME; /* 1200 */
area->max_lsp_lifetime[1] = DEFAULT_LSP_LIFETIME; /* 1200 */
area->lsp_refresh[0] = DEFAULT_MAX_LSP_GEN_INTERVAL; /* 900 */
area->lsp_refresh[1] = DEFAULT_MAX_LSP_GEN_INTERVAL; /* 900 */
area->lsp_gen_interval[0] = DEFAULT_MIN_LSP_GEN_INTERVAL;
area->lsp_gen_interval[1] = DEFAULT_MIN_LSP_GEN_INTERVAL;
area->min_spf_interval[0] = MINIMUM_SPF_INTERVAL;
area->min_spf_interval[1] = MINIMUM_SPF_INTERVAL;
area->dynhostname = 1;
area->oldmetric = 0;
area->newmetric = 1;
area->lsp_frag_threshold = 90;
area->lsp_mtu = DEFAULT_LSP_MTU;
area->lfa_load_sharing[0] = true;
area->lfa_load_sharing[1] = true;
area->attached_bit_send = true;
area->attached_bit_rcv_ignore = false;
#endif /* ifndef FABRICD */
area->lfa_priority_limit[0] = SPF_PREFIX_PRIO_LOW;
area->lfa_priority_limit[1] = SPF_PREFIX_PRIO_LOW;
isis_lfa_tiebreakers_init(area, ISIS_LEVEL1);
isis_lfa_tiebreakers_init(area, ISIS_LEVEL2);
area_mt_init(area);
area->area_tag = strdup(area_tag);
if (fabricd)
area->fabricd = fabricd_new(area);
area->lsp_refresh_arg[0].area = area;
area->lsp_refresh_arg[0].level = IS_LEVEL_1;
area->lsp_refresh_arg[1].area = area;
area->lsp_refresh_arg[1].level = IS_LEVEL_2;
area->bfd_signalled_down = false;
area->bfd_force_spf_refresh = false;
QOBJ_REG(area, isis_area);
if (vrf) {
FOR_ALL_INTERFACES (vrf, ifp) {
if (ifp->ifindex == IFINDEX_INTERNAL)
continue;
circuit = ifp->info;
if (circuit && strmatch(circuit->tag, area->area_tag))
isis_area_add_circuit(area, circuit);
}
}
return area;
}
struct isis_area *isis_area_lookup_by_vrf(const char *area_tag,
const char *vrf_name)
{
struct isis_area *area;
struct listnode *node;
struct isis *isis = NULL;
isis = isis_lookup_by_vrfname(vrf_name);
if (isis == NULL)
return NULL;
for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area))
if (strcmp(area->area_tag, area_tag) == 0)
return area;
return NULL;
}
struct isis_area *isis_area_lookup(const char *area_tag, vrf_id_t vrf_id)
{
struct isis_area *area;
struct listnode *node;
struct isis *isis;
isis = isis_lookup_by_vrfid(vrf_id);
if (isis == NULL)
return NULL;
for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area))
if ((area->area_tag == NULL && area_tag == NULL)
|| (area->area_tag && area_tag
&& strcmp(area->area_tag, area_tag) == 0))
return area;
return NULL;
}
int isis_area_get(struct vty *vty, const char *area_tag)
{
struct isis_area *area;
area = isis_area_lookup(area_tag, VRF_DEFAULT);
if (area) {
VTY_PUSH_CONTEXT(ROUTER_NODE, area);
return CMD_SUCCESS;
}
area = isis_area_create(area_tag, VRF_DEFAULT_NAME);
if (IS_DEBUG_EVENTS)
zlog_debug("New IS-IS area instance %s", area->area_tag);
VTY_PUSH_CONTEXT(ROUTER_NODE, area);
return CMD_SUCCESS;
}
void isis_area_destroy(struct isis_area *area)
{
struct listnode *node, *nnode;
struct isis_circuit *circuit;
QOBJ_UNREG(area);
if (fabricd)
fabricd_finish(area->fabricd);
if (area->circuit_list) {
for (ALL_LIST_ELEMENTS(area->circuit_list, node, nnode,
circuit))
isis_area_del_circuit(area, circuit);
list_delete(&area->circuit_list);
}
if (area->flags.free_idcs)
list_delete(&area->flags.free_idcs);
list_delete(&area->adjacency_list);
lsp_db_fini(&area->lspdb[0]);
lsp_db_fini(&area->lspdb[1]);
/* invalidate and verify to delete all routes from zebra */
isis_area_invalidate_routes(area, area->is_type);
isis_area_verify_routes(area);
#ifndef FABRICD
flex_algos_free(area->flex_algos);
#endif /* ifndef FABRICD */
isis_sr_area_term(area);
isis_srv6_area_term(area);
isis_mpls_te_term(area);
spftree_area_del(area);
if (area->spf_timer[0])
isis_spf_timer_free(EVENT_ARG(area->spf_timer[0]));
EVENT_OFF(area->spf_timer[0]);
if (area->spf_timer[1])
isis_spf_timer_free(EVENT_ARG(area->spf_timer[1]));
EVENT_OFF(area->spf_timer[1]);
spf_backoff_free(area->spf_delay_ietf[0]);
spf_backoff_free(area->spf_delay_ietf[1]);
if (!CHECK_FLAG(im->options, F_ISIS_UNIT_TEST))
isis_redist_area_finish(area);
list_delete(&area->area_addrs);
for (int i = SPF_PREFIX_PRIO_CRITICAL; i <= SPF_PREFIX_PRIO_MEDIUM;
i++) {
struct spf_prefix_priority_acl *ppa;
ppa = &area->spf_prefix_priorities[i];
XFREE(MTYPE_ISIS_ACL_NAME, ppa->name);
}
isis_lfa_tiebreakers_clear(area, ISIS_LEVEL1);
isis_lfa_tiebreakers_clear(area, ISIS_LEVEL2);
EVENT_OFF(area->t_tick);
EVENT_OFF(area->t_lsp_refresh[0]);
EVENT_OFF(area->t_lsp_refresh[1]);
EVENT_OFF(area->t_rlfa_rib_update);
event_cancel_event(master, area);
listnode_delete(area->isis->area_list, area);
free(area->area_tag);
area_mt_finish(area);
if (area->rlfa_plist_name[0])
XFREE(MTYPE_ISIS_PLIST_NAME, area->rlfa_plist_name[0]);
if (area->rlfa_plist_name[1])
XFREE(MTYPE_ISIS_PLIST_NAME, area->rlfa_plist_name[1]);
XFREE(MTYPE_ISIS_AREA, area);
}
/* This is hook function for vrf create called as part of vrf_init */
static int isis_vrf_new(struct vrf *vrf)
{
if (IS_DEBUG_EVENTS)
zlog_debug("%s: VRF Created: %s(%u)", __func__, vrf->name,
vrf->vrf_id);
return 0;
}
/* This is hook function for vrf delete call as part of vrf_init */
static int isis_vrf_delete(struct vrf *vrf)
{
if (IS_DEBUG_EVENTS)
zlog_debug("%s: VRF Deletion: %s(%u)", __func__, vrf->name,
vrf->vrf_id);
return 0;
}
static void isis_set_redist_vrf_bitmaps(struct isis *isis, bool set)
{
struct listnode *node, *lnode;
struct isis_area *area;
int type;
int level;
int protocol;
struct isis_redist *redist;
for (ALL_LIST_ELEMENTS_RO(isis->area_list, node, area))
for (protocol = 0; protocol < REDIST_PROTOCOL_COUNT; protocol++)
for (type = 0; type < ZEBRA_ROUTE_MAX + 1; type++)
for (level = 0; level < ISIS_LEVELS; level++) {
if (area->redist_settings[protocol][type]
[level] == NULL)
continue;
for (ALL_LIST_ELEMENTS_RO(area->redist_settings
[protocol]
[type]
[level],
lnode,
redist)) {
if (redist->redist == 0)
continue;
/* This field is actually
* controlling transmission of
* the IS-IS
* routes to Zebra and has
* nothing to do with
* redistribution,
* so skip it. */
afi_t afi =
afi_for_redist_protocol(
protocol);
if (type == DEFAULT_ROUTE) {
if (set)
vrf_bitmap_set(
&zclient->default_information
[afi],
isis->vrf_id);
else
vrf_bitmap_unset(
&zclient->default_information
[afi],
isis->vrf_id);
} else {
if (set)
vrf_bitmap_set(
&zclient->redist
[afi]
[type],
isis->vrf_id);
else
vrf_bitmap_unset(
&zclient->redist
[afi]
[type],
isis->vrf_id);
}
}
}
}
static int isis_vrf_enable(struct vrf *vrf)
{
struct isis *isis;
vrf_id_t old_vrf_id;
if (IS_DEBUG_EVENTS)
zlog_debug("%s: VRF %s id %u enabled", __func__, vrf->name,
vrf->vrf_id);
isis = isis_lookup_by_vrfname(vrf->name);
if (isis && isis->vrf_id != vrf->vrf_id) {
old_vrf_id = isis->vrf_id;
/* We have instance configured, link to VRF and make it "up". */
isis_vrf_link(isis, vrf);
if (IS_DEBUG_EVENTS)
zlog_debug(
"%s: isis linked to vrf %s vrf_id %u (old id %u)",
__func__, vrf->name, isis->vrf_id, old_vrf_id);
/* start zebra redist to us for new vrf */
isis_set_redist_vrf_bitmaps(isis, true);
isis_zebra_vrf_register(isis);
}
return 0;
}
static int isis_vrf_disable(struct vrf *vrf)
{
struct isis *isis;
vrf_id_t old_vrf_id = VRF_UNKNOWN;
if (vrf->vrf_id == VRF_DEFAULT)
return 0;
if (IS_DEBUG_EVENTS)
zlog_debug("%s: VRF %s id %d disabled.", __func__, vrf->name,
vrf->vrf_id);
isis = isis_lookup_by_vrfname(vrf->name);
if (isis) {
old_vrf_id = isis->vrf_id;
isis_zebra_vrf_deregister(isis);
isis_set_redist_vrf_bitmaps(isis, false);
/* We have instance configured, unlink
* from VRF and make it "down".
*/
isis_vrf_unlink(isis, vrf);
if (IS_DEBUG_EVENTS)
zlog_debug("%s: isis old_vrf_id %d unlinked", __func__,
old_vrf_id);
}
return 0;
}
void isis_vrf_init(void)
{
vrf_init(isis_vrf_new, isis_vrf_enable, isis_vrf_disable,
isis_vrf_delete);
vrf_cmd_init(NULL);
}
void isis_terminate(void)
{
struct isis *isis;
struct listnode *node, *nnode;
bfd_protocol_integration_set_shutdown(true);
if (listcount(im->isis) == 0)
return;
for (ALL_LIST_ELEMENTS(im->isis, node, nnode, isis))
isis_finish(isis);
}
void isis_filter_update(struct access_list *access)
{
struct isis *isis;
struct isis_area *area;
struct listnode *node, *anode;
for (ALL_LIST_ELEMENTS_RO(im->isis, node, isis)) {
for (ALL_LIST_ELEMENTS_RO(isis->area_list, anode, area)) {
for (int i = SPF_PREFIX_PRIO_CRITICAL;
i <= SPF_PREFIX_PRIO_MEDIUM; i++) {
struct spf_prefix_priority_acl *ppa;
ppa = &area->spf_prefix_priorities[i];
ppa->list_v4 =
access_list_lookup(AFI_IP, ppa->name);
ppa->list_v6 =
access_list_lookup(AFI_IP6, ppa->name);
}
lsp_regenerate_schedule(area, area->is_type, 0);
}
}
}
void isis_prefix_list_update(struct prefix_list *plist)
{
struct isis *isis;
struct isis_area *area;
struct listnode *node, *anode;
for (ALL_LIST_ELEMENTS_RO(im->isis, node, isis)) {
for (ALL_LIST_ELEMENTS_RO(isis->area_list, anode, area)) {
for (int level = ISIS_LEVEL1; level <= ISIS_LEVELS;
level++) {
const char *plist_name =
prefix_list_name(plist);
if (!area->rlfa_plist_name[level - 1])
continue;
if (!strmatch(area->rlfa_plist_name[level - 1],
plist_name))
continue;
area->rlfa_plist[level - 1] =
prefix_list_lookup(AFI_IP, plist_name);
lsp_regenerate_schedule(area, area->is_type, 0);
}
}
}
}
#ifdef FABRICD
static void area_set_mt_enabled(struct isis_area *area, uint16_t mtid,
bool enabled)
{
struct isis_area_mt_setting *setting;
setting = area_get_mt_setting(area, mtid);
if (setting->enabled != enabled) {
setting->enabled = enabled;
lsp_regenerate_schedule(area, IS_LEVEL_1 | IS_LEVEL_2, 0);
}
}
static void area_set_mt_overload(struct isis_area *area, uint16_t mtid,
bool overload)
{
struct isis_area_mt_setting *setting;
setting = area_get_mt_setting(area, mtid);
if (setting->overload != overload) {
setting->overload = overload;
if (setting->enabled)
lsp_regenerate_schedule(area, IS_LEVEL_1 | IS_LEVEL_2,
0);
}
}
#endif /* ifdef FABRICD */
int area_net_title(struct vty *vty, const char *net_title)
{
VTY_DECLVAR_CONTEXT(isis_area, area);
struct iso_address *addr;
struct iso_address *addrp;
struct listnode *node;
uint8_t buff[255];
/* We check that we are not over the maximal number of addresses */
if (listcount(area->area_addrs) >= area->isis->max_area_addrs) {
vty_out(vty,
"Maximum of area addresses (%d) already reached \n",
area->isis->max_area_addrs);
return CMD_ERR_NOTHING_TODO;
}
addr = XMALLOC(MTYPE_ISIS_AREA_ADDR, sizeof(struct iso_address));
addr->addr_len = dotformat2buff(buff, net_title);
memcpy(addr->area_addr, buff, addr->addr_len);
#ifdef EXTREME_DEBUG
zlog_debug("added area address %s for area %s (address length %d)",
net_title, area->area_tag, addr->addr_len);
#endif /* EXTREME_DEBUG */
if (addr->addr_len < ISO_ADDR_MIN || addr->addr_len > ISO_ADDR_SIZE) {
vty_out(vty,
"area address must be at least 8..20 octets long (%d)\n",
addr->addr_len);
XFREE(MTYPE_ISIS_AREA_ADDR, addr);
return CMD_WARNING_CONFIG_FAILED;
}
if (addr->area_addr[addr->addr_len - 1] != 0) {
vty_out(vty,
"nsel byte (last byte) in area address must be 0\n");
XFREE(MTYPE_ISIS_AREA_ADDR, addr);
return CMD_WARNING_CONFIG_FAILED;
}
if (area->isis->sysid_set == 0) {
/*
* First area address - get the SystemID for this router
*/
memcpy(area->isis->sysid, GETSYSID(addr), ISIS_SYS_ID_LEN);
area->isis->sysid_set = 1;
if (IS_DEBUG_EVENTS)
zlog_debug("Router has SystemID %pSY",
area->isis->sysid);
} else {
/*
* Check that the SystemID portions match
*/
if (memcmp(area->isis->sysid, GETSYSID(addr),
ISIS_SYS_ID_LEN)) {
vty_out(vty,
"System ID must not change when defining additional area addresses\n");
XFREE(MTYPE_ISIS_AREA_ADDR, addr);
return CMD_WARNING_CONFIG_FAILED;
}
/* now we see that we don't already have this address */
for (ALL_LIST_ELEMENTS_RO(area->area_addrs, node, addrp)) {
if ((addrp->addr_len + ISIS_SYS_ID_LEN + ISIS_NSEL_LEN)
!= (addr->addr_len))
continue;
if (!memcmp(addrp->area_addr, addr->area_addr,
addr->addr_len)) {
XFREE(MTYPE_ISIS_AREA_ADDR, addr);
return CMD_SUCCESS; /* silent fail */
}
}
}
/*
* Forget the systemID part of the address
*/
addr->addr_len -= (ISIS_SYS_ID_LEN + ISIS_NSEL_LEN);
listnode_add(area->area_addrs, addr);
/* only now we can safely generate our LSPs for this area */
if (listcount(area->area_addrs) > 0) {
if (area->is_type & IS_LEVEL_1)
lsp_generate(area, IS_LEVEL_1);
if (area->is_type & IS_LEVEL_2)
lsp_generate(area, IS_LEVEL_2);
}
return CMD_SUCCESS;
}
int area_clear_net_title(struct vty *vty, const char *net_title)
{
VTY_DECLVAR_CONTEXT(isis_area, area);
struct iso_address addr, *addrp = NULL;
struct listnode *node;
uint8_t buff[255];
addr.addr_len = dotformat2buff(buff, net_title);
if (addr.addr_len < ISO_ADDR_MIN || addr.addr_len > ISO_ADDR_SIZE) {
vty_out(vty,
"Unsupported area address length %d, should be 8...20 \n",
addr.addr_len);
return CMD_WARNING_CONFIG_FAILED;
}
memcpy(addr.area_addr, buff, (int)addr.addr_len);
for (ALL_LIST_ELEMENTS_RO(area->area_addrs, node, addrp))
if ((addrp->addr_len + ISIS_SYS_ID_LEN + 1) == addr.addr_len
&& !memcmp(addrp->area_addr, addr.area_addr, addr.addr_len))
break;
if (!addrp) {
vty_out(vty, "No area address %s for area %s \n", net_title,
area->area_tag);
return CMD_ERR_NO_MATCH;
}
listnode_delete(area->area_addrs, addrp);
XFREE(MTYPE_ISIS_AREA_ADDR, addrp);
/*
* Last area address - reset the SystemID for this router
*/
if (listcount(area->area_addrs) == 0) {
memset(area->isis->sysid, 0, ISIS_SYS_ID_LEN);
area->isis->sysid_set = 0;
if (IS_DEBUG_EVENTS)
zlog_debug("Router has no SystemID");
}
return CMD_SUCCESS;
}
/*
* 'show isis interface' command
*/
int show_isis_interface_common(struct vty *vty, struct json_object *json,
const char *ifname, char detail,
const char *vrf_name, bool all_vrf)
{
if (json) {
return show_isis_interface_common_json(json, ifname, detail,
vrf_name, all_vrf);
} else {
return show_isis_interface_common_vty(vty, ifname, detail,
vrf_name, all_vrf);
}
}
int show_isis_interface_common_json(struct json_object *json,
const char *ifname, char detail,
const char *vrf_name, bool all_vrf)
{
struct listnode *anode, *cnode, *inode;
struct isis_area *area;
struct isis_circuit *circuit;
struct isis *isis;
struct json_object *areas_json, *area_json;
struct json_object *circuits_json, *circuit_json;
if (!im) {
// IS-IS Routing Process not enabled
json_object_string_add(json, "is-is-routing-process-enabled",
"no");
return CMD_SUCCESS;
}
if (vrf_name) {
if (all_vrf) {
for (ALL_LIST_ELEMENTS_RO(im->isis, inode, isis)) {
areas_json = json_object_new_array();
json_object_object_add(json, "areas",
areas_json);
for (ALL_LIST_ELEMENTS_RO(isis->area_list,
anode, area)) {
area_json = json_object_new_object();
json_object_string_add(