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|
/*
* Copyright (C) 2020 NetDEF, Inc.
* Renato Westphal
*
* This program 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 of the License, or (at your option)
* any later version.
*
* This program 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 <lib/version.h>
#include "getopt.h"
#include "thread.h"
#include "vty.h"
#include "command.h"
#include "log.h"
#include "vrf.h"
#include "yang.h"
#include "isisd/isisd.h"
#include "isisd/isis_dynhn.h"
#include "isisd/isis_misc.h"
#include "isisd/isis_route.h"
#include "isisd/isis_spf.h"
#include "isisd/isis_spf_private.h"
#include "test_common.h"
enum test_type {
TEST_SPF = 1,
TEST_REVERSE_SPF,
TEST_LFA,
TEST_RLFA,
TEST_TI_LFA,
};
#define F_DISPLAY_LSPDB 0x01
#define F_IPV4_ONLY 0x02
#define F_IPV6_ONLY 0x04
#define F_LEVEL1_ONLY 0x08
#define F_LEVEL2_ONLY 0x10
static void test_run_spf(struct vty *vty, const struct isis_topology *topology,
const struct isis_test_node *root,
struct isis_area *area, struct lspdb_head *lspdb,
int level, int tree, bool reverse)
{
struct isis_spftree *spftree;
enum spf_type spf_type;
/* Run SPF. */
spf_type = reverse ? SPF_TYPE_REVERSE : SPF_TYPE_FORWARD;
spftree = isis_spftree_new(area, lspdb, root->sysid, level, tree,
spf_type, F_SPFTREE_NO_ADJACENCIES);
isis_run_spf(spftree);
/* Print the SPT and the corresponding routing table. */
isis_print_spftree(vty, spftree);
isis_print_routes(vty, spftree, false, false);
/* Cleanup SPF tree. */
isis_spftree_del(spftree);
}
static void test_run_lfa(struct vty *vty, const struct isis_topology *topology,
const struct isis_test_node *root,
struct isis_area *area, struct lspdb_head *lspdb,
int level, int tree,
struct lfa_protected_resource *protected_resource)
{
struct isis_spftree *spftree_self;
uint8_t flags;
/* Run forward SPF in the root node. */
flags = F_SPFTREE_NO_ADJACENCIES;
spftree_self = isis_spftree_new(area, lspdb, root->sysid, level, tree,
SPF_TYPE_FORWARD, flags);
isis_run_spf(spftree_self);
/* Run forward SPF on all adjacent routers. */
isis_spf_run_neighbors(spftree_self);
/* Compute the LFA repair paths. */
isis_lfa_compute(area, NULL, spftree_self, protected_resource);
/* Print the SPT and the corresponding main/backup routing tables. */
isis_print_spftree(vty, spftree_self);
vty_out(vty, "Main:\n");
isis_print_routes(vty, spftree_self, false, false);
vty_out(vty, "Backup:\n");
isis_print_routes(vty, spftree_self, false, true);
/* Cleanup everything. */
isis_spftree_del(spftree_self);
}
static void test_run_rlfa(struct vty *vty, const struct isis_topology *topology,
const struct isis_test_node *root,
struct isis_area *area, struct lspdb_head *lspdb,
int level, int tree,
struct lfa_protected_resource *protected_resource)
{
struct isis_spftree *spftree_self;
struct isis_spftree *spftree_reverse;
struct isis_spftree *spftree_pc;
struct isis_spf_node *spf_node, *node;
struct rlfa *rlfa;
uint8_t flags;
/* Run forward SPF in the root node. */
flags = F_SPFTREE_NO_ADJACENCIES;
spftree_self = isis_spftree_new(area, lspdb, root->sysid, level, tree,
SPF_TYPE_FORWARD, flags);
isis_run_spf(spftree_self);
/* Run reverse SPF in the root node. */
spftree_reverse = isis_spf_reverse_run(spftree_self);
/* Run forward SPF on all adjacent routers. */
isis_spf_run_neighbors(spftree_self);
/* Compute the local LFA repair paths. */
isis_lfa_compute(area, NULL, spftree_self, protected_resource);
/* Compute the remote LFA repair paths. */
spftree_pc = isis_rlfa_compute(area, spftree_self, spftree_reverse, 0,
protected_resource);
/* Print the extended P-space and Q-space. */
vty_out(vty, "P-space (self):\n");
RB_FOREACH (node, isis_spf_nodes, &spftree_pc->lfa.p_space)
vty_out(vty, " %s\n", print_sys_hostname(node->sysid));
vty_out(vty, "\n");
RB_FOREACH (spf_node, isis_spf_nodes, &spftree_self->adj_nodes) {
if (RB_EMPTY(isis_spf_nodes, &spf_node->lfa.p_space))
continue;
vty_out(vty, "P-space (%s):\n",
print_sys_hostname(spf_node->sysid));
RB_FOREACH (node, isis_spf_nodes, &spf_node->lfa.p_space)
vty_out(vty, " %s\n", print_sys_hostname(node->sysid));
vty_out(vty, "\n");
}
vty_out(vty, "Q-space:\n");
RB_FOREACH (node, isis_spf_nodes, &spftree_pc->lfa.q_space)
vty_out(vty, " %s\n", print_sys_hostname(node->sysid));
vty_out(vty, "\n");
/* Print the post-convergence SPT. */
isis_print_spftree(vty, spftree_pc);
/*
* Activate the computed RLFAs (if any) using artificial LDP labels for
* the PQ nodes.
*/
frr_each_safe (rlfa_tree, &spftree_self->lfa.remote.rlfas, rlfa) {
struct zapi_rlfa_response response = {};
response.pq_label = test_topology_node_ldp_label(
topology, rlfa->pq_address);
assert(response.pq_label != MPLS_INVALID_LABEL);
isis_rlfa_activate(spftree_self, rlfa, &response);
}
/* Print the SPT and the corresponding main/backup routing tables. */
isis_print_spftree(vty, spftree_self);
vty_out(vty, "Main:\n");
isis_print_routes(vty, spftree_self, false, false);
vty_out(vty, "Backup:\n");
isis_print_routes(vty, spftree_self, false, true);
/* Cleanup everything. */
isis_spftree_del(spftree_self);
isis_spftree_del(spftree_reverse);
isis_spftree_del(spftree_pc);
}
static void test_run_ti_lfa(struct vty *vty,
const struct isis_topology *topology,
const struct isis_test_node *root,
struct isis_area *area, struct lspdb_head *lspdb,
int level, int tree,
struct lfa_protected_resource *protected_resource)
{
struct isis_spftree *spftree_self;
struct isis_spftree *spftree_reverse;
struct isis_spftree *spftree_pc;
struct isis_spf_node *spf_node, *node;
uint8_t flags;
/* Run forward SPF in the root node. */
flags = F_SPFTREE_NO_ADJACENCIES;
spftree_self = isis_spftree_new(area, lspdb, root->sysid, level, tree,
SPF_TYPE_FORWARD, flags);
isis_run_spf(spftree_self);
/* Run reverse SPF in the root node. */
spftree_reverse = isis_spf_reverse_run(spftree_self);
/* Run forward SPF on all adjacent routers. */
isis_spf_run_neighbors(spftree_self);
/* Compute the TI-LFA repair paths. */
spftree_pc = isis_tilfa_compute(area, spftree_self, spftree_reverse,
protected_resource);
/* Print the extended P-space and Q-space. */
vty_out(vty, "P-space (self):\n");
RB_FOREACH (node, isis_spf_nodes, &spftree_pc->lfa.p_space)
vty_out(vty, " %s\n", print_sys_hostname(node->sysid));
vty_out(vty, "\n");
RB_FOREACH (spf_node, isis_spf_nodes, &spftree_self->adj_nodes) {
if (RB_EMPTY(isis_spf_nodes, &spf_node->lfa.p_space))
continue;
vty_out(vty, "P-space (%s):\n",
print_sys_hostname(spf_node->sysid));
RB_FOREACH (node, isis_spf_nodes, &spf_node->lfa.p_space)
vty_out(vty, " %s\n", print_sys_hostname(node->sysid));
vty_out(vty, "\n");
}
vty_out(vty, "Q-space:\n");
RB_FOREACH (node, isis_spf_nodes, &spftree_pc->lfa.q_space)
vty_out(vty, " %s\n", print_sys_hostname(node->sysid));
vty_out(vty, "\n");
/*
* Print the post-convergence SPT and the corresponding routing table.
*/
isis_print_spftree(vty, spftree_pc);
isis_print_routes(vty, spftree_self, false, true);
/* Cleanup everything. */
isis_spftree_del(spftree_self);
isis_spftree_del(spftree_reverse);
isis_spftree_del(spftree_pc);
}
static int test_run(struct vty *vty, const struct isis_topology *topology,
const struct isis_test_node *root, enum test_type test_type,
uint8_t flags, enum lfa_protection_type protection_type,
const char *fail_sysid_str, uint8_t fail_pseudonode_id)
{
struct isis_area *area;
struct lfa_protected_resource protected_resource = {};
uint8_t fail_id[ISIS_SYS_ID_LEN] = {};
/* Init topology. */
area = isis_area_create("1", NULL);
memcpy(area->isis->sysid, root->sysid, sizeof(area->isis->sysid));
area->is_type = IS_LEVEL_1_AND_2;
area->srdb.enabled = true;
if (test_topology_load(topology, area, area->lspdb) != 0) {
vty_out(vty, "%% Failed to load topology\n");
return CMD_WARNING;
}
/* Parse failed link/node. */
if (fail_sysid_str) {
if (sysid2buff(fail_id, fail_sysid_str) == 0) {
struct isis_dynhn *dynhn;
dynhn = dynhn_find_by_name(area->isis, fail_sysid_str);
if (dynhn == NULL) {
vty_out(vty, "Invalid system id %s\n",
fail_sysid_str);
return CMD_WARNING;
}
memcpy(fail_id, dynhn->id, ISIS_SYS_ID_LEN);
}
protected_resource.type = protection_type;
memcpy(protected_resource.adjacency, fail_id, ISIS_SYS_ID_LEN);
LSP_PSEUDO_ID(protected_resource.adjacency) =
fail_pseudonode_id;
}
for (int level = IS_LEVEL_1; level <= IS_LEVEL_2; level++) {
if (level == IS_LEVEL_1 && CHECK_FLAG(flags, F_LEVEL2_ONLY))
continue;
if (level == IS_LEVEL_2 && CHECK_FLAG(flags, F_LEVEL1_ONLY))
continue;
if ((root->level & level) == 0)
continue;
/* Print the LDPDB. */
if (CHECK_FLAG(flags, F_DISPLAY_LSPDB))
show_isis_database_lspdb_vty(vty, area, level - 1,
&area->lspdb[level - 1], NULL,
ISIS_UI_LEVEL_DETAIL);
for (int tree = SPFTREE_IPV4; tree <= SPFTREE_IPV6; tree++) {
if (tree == SPFTREE_IPV4
&& CHECK_FLAG(flags, F_IPV6_ONLY))
continue;
if (tree == SPFTREE_IPV6
&& CHECK_FLAG(flags, F_IPV4_ONLY))
continue;
switch (test_type) {
case TEST_SPF:
test_run_spf(vty, topology, root, area,
&area->lspdb[level - 1], level,
tree, false);
break;
case TEST_REVERSE_SPF:
test_run_spf(vty, topology, root, area,
&area->lspdb[level - 1], level,
tree, true);
break;
case TEST_LFA:
test_run_lfa(vty, topology, root, area,
&area->lspdb[level - 1], level,
tree, &protected_resource);
break;
case TEST_RLFA:
test_run_rlfa(vty, topology, root, area,
&area->lspdb[level - 1], level,
tree, &protected_resource);
break;
case TEST_TI_LFA:
test_run_ti_lfa(vty, topology, root, area,
&area->lspdb[level - 1], level,
tree, &protected_resource);
break;
}
}
}
/* Cleanup IS-IS area. */
isis_area_destroy(area);
return CMD_SUCCESS;
}
DEFUN(test_isis, test_isis_cmd,
"test isis topology (1-14) root HOSTNAME\
<\
spf\
|reverse-spf\
|lfa system-id WORD [pseudonode-id <1-255>]\
|remote-lfa system-id WORD [pseudonode-id <1-255>]\
|ti-lfa system-id WORD [pseudonode-id <1-255>] [node-protection]\
>\
[display-lspdb] [<ipv4-only|ipv6-only>] [<level-1-only|level-2-only>]",
"Test command\n"
"IS-IS routing protocol\n"
"Test topology\n"
"Test topology number\n"
"SPF root\n"
"SPF root hostname\n"
"Normal Shortest Path First\n"
"Reverse Shortest Path First\n"
"Classic LFA\n"
"System ID\n"
"System ID\n"
"Pseudonode-ID\n"
"Pseudonode-ID\n"
"Remote LFA\n"
"System ID\n"
"System ID\n"
"Pseudonode-ID\n"
"Pseudonode-ID\n"
"Topology Independent LFA\n"
"System ID\n"
"System ID\n"
"Pseudonode-ID\n"
"Pseudonode-ID\n"
"Node protection\n"
"Display the LSPDB\n"
"Do IPv4 processing only\n"
"Do IPv6 processing only\n"
"Skip L2 LSPs\n"
"Skip L1 LSPs\n")
{
uint16_t topology_number;
const struct isis_topology *topology;
const struct isis_test_node *root;
enum test_type test_type;
enum lfa_protection_type protection_type = 0;
const char *fail_sysid_str = NULL;
uint8_t fail_pseudonode_id = 0;
uint8_t flags = 0;
int idx = 0;
/* Load topology. */
argv_find(argv, argc, "topology", &idx);
topology_number = atoi(argv[idx + 1]->arg);
topology = test_topology_find(test_topologies, topology_number);
if (!topology) {
vty_out(vty, "%% Topology \"%s\" not found\n",
argv[idx + 1]->arg);
return CMD_WARNING;
}
/* Find root node. */
argv_find(argv, argc, "root", &idx);
root = test_topology_find_node(topology, argv[idx + 1]->arg, 0);
if (!root) {
vty_out(vty, "%% Node \"%s\" not found\n", argv[idx + 1]->arg);
return CMD_WARNING;
}
/* Parse test information. */
if (argv_find(argv, argc, "spf", &idx))
test_type = TEST_SPF;
else if (argv_find(argv, argc, "reverse-spf", &idx))
test_type = TEST_REVERSE_SPF;
else if (argv_find(argv, argc, "lfa", &idx)) {
test_type = TEST_LFA;
fail_sysid_str = argv[idx + 2]->arg;
if (argv_find(argv, argc, "pseudonode-id", &idx))
fail_pseudonode_id =
strtoul(argv[idx + 1]->arg, NULL, 10);
protection_type = LFA_LINK_PROTECTION;
} else if (argv_find(argv, argc, "remote-lfa", &idx)) {
test_type = TEST_RLFA;
fail_sysid_str = argv[idx + 2]->arg;
if (argv_find(argv, argc, "pseudonode-id", &idx))
fail_pseudonode_id =
strtoul(argv[idx + 1]->arg, NULL, 10);
protection_type = LFA_LINK_PROTECTION;
} else if (argv_find(argv, argc, "ti-lfa", &idx)) {
test_type = TEST_TI_LFA;
fail_sysid_str = argv[idx + 2]->arg;
if (argv_find(argv, argc, "pseudonode-id", &idx))
fail_pseudonode_id =
strtoul(argv[idx + 1]->arg, NULL, 10);
if (argv_find(argv, argc, "node-protection", &idx))
protection_type = LFA_NODE_PROTECTION;
else
protection_type = LFA_LINK_PROTECTION;
} else
return CMD_WARNING;
/* Parse control flags. */
if (argv_find(argv, argc, "display-lspdb", &idx))
SET_FLAG(flags, F_DISPLAY_LSPDB);
if (argv_find(argv, argc, "ipv4-only", &idx))
SET_FLAG(flags, F_IPV4_ONLY);
else if (argv_find(argv, argc, "ipv6-only", &idx))
SET_FLAG(flags, F_IPV6_ONLY);
if (argv_find(argv, argc, "level-1-only", &idx))
SET_FLAG(flags, F_LEVEL1_ONLY);
else if (argv_find(argv, argc, "level-2-only", &idx))
SET_FLAG(flags, F_LEVEL2_ONLY);
return test_run(vty, topology, root, test_type, flags, protection_type,
fail_sysid_str, fail_pseudonode_id);
}
static void vty_do_exit(int isexit)
{
printf("\nend.\n");
cmd_terminate();
vty_terminate();
yang_terminate();
thread_master_free(master);
log_memstats(stderr, "test-isis-spf");
if (!isexit)
exit(0);
}
struct option longopts[] = {{"help", no_argument, NULL, 'h'},
{"debug", no_argument, NULL, 'd'},
{0}};
/* Help information display. */
static void usage(char *progname, int status)
{
if (status != 0)
fprintf(stderr, "Try `%s --help' for more information.\n",
progname);
else {
printf("Usage : %s [OPTION...]\n\
isisd SPF test program.\n\n\
-u, --debug Enable debugging\n\
-h, --help Display this help and exit\n\
\n\
Report bugs to %s\n",
progname, FRR_BUG_ADDRESS);
}
exit(status);
}
int main(int argc, char **argv)
{
char *p;
char *progname;
struct thread thread;
bool debug = false;
/* Set umask before anything for security */
umask(0027);
/* get program name */
progname = ((p = strrchr(argv[0], '/')) ? ++p : argv[0]);
while (1) {
int opt;
opt = getopt_long(argc, argv, "hd", longopts, 0);
if (opt == EOF)
break;
switch (opt) {
case 0:
break;
case 'd':
debug = true;
break;
case 'h':
usage(progname, 0);
break;
default:
usage(progname, 1);
break;
}
}
/* master init. */
master = thread_master_create(NULL);
isis_master_init(master);
/* Library inits. */
cmd_init(1);
cmd_hostname_set("test");
vty_init(master, false);
yang_init(true, false);
if (debug)
zlog_aux_init("NONE: ", LOG_DEBUG);
else
zlog_aux_init("NONE: ", ZLOG_DISABLED);
/* IS-IS inits. */
yang_module_load("frr-isisd");
SET_FLAG(im->options, F_ISIS_UNIT_TEST);
debug_spf_events |= DEBUG_SPF_EVENTS;
debug_lfa |= DEBUG_LFA;
debug_events |= DEBUG_EVENTS;
debug_rte_events |= DEBUG_RTE_EVENTS;
/* Install test command. */
install_element(VIEW_NODE, &test_isis_cmd);
/* Read input from .in file. */
vty_stdio(vty_do_exit);
/* Fetch next active thread. */
while (thread_fetch(master, &thread))
thread_call(&thread);
/* Not reached. */
exit(0);
}
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