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frr/tests/isisd/test_isis_spf.c
Christian Hopps e8648a0c72 lib: add flag to have libyang load internal ietf-yang-library module 
Mgmtd makes use of libyang's internal ietf-yang-library module to add
support for said module to FRR management. Previously, mgmtd was loading
this module explicitly; however, that required that libyang's
`ietf-yang-library.yang` module definition file be co-located with FRR's
yang files so that it (and ietf-datastore.yang) would be found when
searched for by libyang using FRRs search path. This isn't always the
case depending on how the user compiles and installs libyang so mgmtd
was failing to run in some cases.

Instead of doing it the above way we simply tell libyang to load it's
internal version of ietf-yang-library when we initialize the libyang
context.

This required adding a boolean to a couple of the init functions which
is why so many files are touched (although all the changes are minimal).

Signed-off-by: Christian Hopps <chopps@labn.net>
2024-10-07 03:32:44 +00:00

576 lines
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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2020 NetDEF, Inc.
* Renato Westphal
*/
#include <zebra.h>
#include <sys/stat.h>
#include <lib/version.h>
#include "getopt.h"
#include "frrevent.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,
SR_ALGORITHM_SPF);
isis_run_spf(spftree);
/* Print the SPT and the corresponding routing table. */
isis_print_spftree(vty, spftree, NULL);
isis_print_routes(vty, spftree, NULL, 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, SR_ALGORITHM_SPF);
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, NULL);
vty_out(vty, "Main:\n");
isis_print_routes(vty, spftree_self, NULL, false, false);
vty_out(vty, "Backup:\n");
isis_print_routes(vty, spftree_self, NULL, 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, SR_ALGORITHM_SPF);
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, NULL);
/*
* 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, NULL);
vty_out(vty, "Main:\n");
isis_print_routes(vty, spftree_self, NULL, false, false);
vty_out(vty, "Backup:\n");
isis_print_routes(vty, spftree_self, NULL, 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, SR_ALGORITHM_SPF);
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, NULL);
isis_print_routes(vty, spftree_self, NULL, 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] = {};
static char sysidstr[ISO_SYSID_STRLEN];
char net_title[255];
uint8_t buff[255];
struct iso_address *addr = NULL;
/* 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;
area->area_addrs = list_new();
area->area_addrs->del = isis_area_address_delete;
addr = XMALLOC(MTYPE_ISIS_AREA_ADDR, sizeof(struct iso_address));
snprintfrr(sysidstr, sizeof(sysidstr), "%pSY", area->isis->sysid);
snprintf(net_title, sizeof(net_title), "49.%s.00", sysidstr);
addr->addr_len = dotformat2buff(buff, net_title);
memcpy(addr->area_addr, buff, addr->addr_len);
addr->addr_len -= (ISIS_SYS_ID_LEN + ISIS_NSEL_LEN);
listnode_add(area->area_addrs, addr);
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();
event_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 event 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 = event_master_create(NULL);
isis_master_init(master);
/* Library inits. */
cmd_init(1);
cmd_hostname_set("test");
vty_init(master, false);
yang_init(true, false, false);
if (debug)
zlog_aux_init("NONE: ", LOG_DEBUG);
else
zlog_aux_init("NONE: ", ZLOG_DISABLED);
/* IS-IS inits. */
yang_module_load("frr-isisd", NULL);
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 (event_fetch(master, &thread))
event_call(&thread);
/* Not reached. */
exit(0);
}
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