[mirror_frr.git] / isisd / isis_routemap.c

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * IS-IS Rout(e)ing protocol - isis_routemap.c
 *
 * Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
 */

#include <zebra.h>

#include "command.h"
#include "filter.h"
#include "hash.h"
#include "if.h"
#include "linklist.h"
#include "log.h"
#include "memory.h"
#include "prefix.h"
#include "plist.h"
#include "routemap.h"
#include "table.h"
#include "frrevent.h"
#include "vty.h"

#include "isis_constants.h"
#include "isis_common.h"
#include "isis_flags.h"
#include "isisd.h"
#include "isis_misc.h"
#include "isis_adjacency.h"
#include "isis_circuit.h"
#include "isis_pdu.h"
#include "isis_lsp.h"
#include "isis_spf.h"
#include "isis_route.h"
#include "isis_zebra.h"
#include "isis_routemap.h"

static enum route_map_cmd_result_t
route_match_ip_address(void *rule, const struct prefix *prefix, void *object)
{
	struct access_list *alist;

	alist = access_list_lookup(AFI_IP, (char *)rule);
	if (access_list_apply(alist, prefix) != FILTER_DENY)
		return RMAP_MATCH;

	return RMAP_NOMATCH;
}

static void *route_match_ip_address_compile(const char *arg)
{
	return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
}

static void route_match_ip_address_free(void *rule)
{
	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}

static const struct route_map_rule_cmd route_match_ip_address_cmd = {
	"ip address",
	route_match_ip_address,
	route_match_ip_address_compile,
	route_match_ip_address_free
};

/* ------------------------------------------------------------*/

static enum route_map_cmd_result_t
route_match_ip_address_prefix_list(void *rule, const struct prefix *prefix,
				   void *object)
{
	struct prefix_list *plist;

	plist = prefix_list_lookup(AFI_IP, (char *)rule);
	if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
		return RMAP_MATCH;

	return RMAP_NOMATCH;
}

static void *route_match_ip_address_prefix_list_compile(const char *arg)
{
	return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
}

static void route_match_ip_address_prefix_list_free(void *rule)
{
	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}

static const struct route_map_rule_cmd
		route_match_ip_address_prefix_list_cmd = {
	"ip address prefix-list",
	route_match_ip_address_prefix_list,
	route_match_ip_address_prefix_list_compile,
	route_match_ip_address_prefix_list_free
};

/* ------------------------------------------------------------*/

/* `match tag TAG' */
/* Match function return 1 if match is success else return zero. */
static enum route_map_cmd_result_t
route_match_tag(void *rule, const struct prefix *p, void *object)
{
	route_tag_t *tag;
	struct isis_ext_info *info;
	route_tag_t info_tag;

	tag = rule;
	info = object;

	info_tag = info->tag;
	if (info_tag == *tag)
		return RMAP_MATCH;
	else
		return RMAP_NOMATCH;
}

/* Route map commands for tag matching. */
static const struct route_map_rule_cmd route_match_tag_cmd = {
	"tag",
	route_match_tag,
	route_map_rule_tag_compile,
	route_map_rule_tag_free,
};

/* ------------------------------------------------------------*/

static enum route_map_cmd_result_t
route_match_ipv6_address(void *rule, const struct prefix *prefix, void *object)
{
	struct access_list *alist;

	alist = access_list_lookup(AFI_IP6, (char *)rule);
	if (access_list_apply(alist, prefix) != FILTER_DENY)
		return RMAP_MATCH;

	return RMAP_NOMATCH;
}

static void *route_match_ipv6_address_compile(const char *arg)
{
	return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
}

static void route_match_ipv6_address_free(void *rule)
{
	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}

static const struct route_map_rule_cmd route_match_ipv6_address_cmd = {
	"ipv6 address",
	route_match_ipv6_address,
	route_match_ipv6_address_compile,
	route_match_ipv6_address_free
};

/* ------------------------------------------------------------*/

static enum route_map_cmd_result_t
route_match_ipv6_address_prefix_list(void *rule, const struct prefix *prefix,
				     void *object)
{
	struct prefix_list *plist;

	plist = prefix_list_lookup(AFI_IP6, (char *)rule);
	if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
		return RMAP_MATCH;

	return RMAP_NOMATCH;
}

static void *route_match_ipv6_address_prefix_list_compile(const char *arg)
{
	return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
}

static void route_match_ipv6_address_prefix_list_free(void *rule)
{
	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}

static const struct route_map_rule_cmd
		route_match_ipv6_address_prefix_list_cmd = {
	"ipv6 address prefix-list",
	route_match_ipv6_address_prefix_list,
	route_match_ipv6_address_prefix_list_compile,
	route_match_ipv6_address_prefix_list_free
};

/* ------------------------------------------------------------*/

static enum route_map_cmd_result_t
route_set_metric(void *rule, const struct prefix *prefix, void *object)
{
	uint32_t *metric;
	struct isis_ext_info *info;

	metric = rule;
	info = object;

	info->metric = *metric;

	return RMAP_OKAY;
}

static void *route_set_metric_compile(const char *arg)
{
	unsigned long metric;
	char *endp;
	uint32_t *ret;

	metric = strtoul(arg, &endp, 10);
	if (arg[0] == '\0' || *endp != '\0' || metric > MAX_WIDE_PATH_METRIC)
		return NULL;

	ret = XCALLOC(MTYPE_ROUTE_MAP_COMPILED, sizeof(*ret));
	*ret = metric;

	return ret;
}

static void route_set_metric_free(void *rule)
{
	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
}

static const struct route_map_rule_cmd route_set_metric_cmd = {
	"metric",
	route_set_metric,
	route_set_metric_compile,
	route_set_metric_free
};

void isis_route_map_init(void)
{
	route_map_init();

	route_map_match_ip_address_hook(generic_match_add);
	route_map_no_match_ip_address_hook(generic_match_delete);

	route_map_match_ip_address_prefix_list_hook(generic_match_add);
	route_map_no_match_ip_address_prefix_list_hook(generic_match_delete);

	route_map_match_ipv6_address_hook(generic_match_add);
	route_map_no_match_ipv6_address_hook(generic_match_delete);

	route_map_match_ipv6_address_prefix_list_hook(generic_match_add);
	route_map_no_match_ipv6_address_prefix_list_hook(generic_match_delete);

	route_map_match_tag_hook(generic_match_add);
	route_map_no_match_tag_hook(generic_match_delete);

	route_map_set_metric_hook(generic_set_add);
	route_map_no_set_metric_hook(generic_set_delete);

	route_map_install_match(&route_match_ip_address_cmd);
	route_map_install_match(&route_match_ip_address_prefix_list_cmd);
	route_map_install_match(&route_match_ipv6_address_cmd);
	route_map_install_match(&route_match_ipv6_address_prefix_list_cmd);
	route_map_install_match(&route_match_tag_cmd);
	route_map_install_set(&route_set_metric_cmd);
}
Commit	Line	Data
	1	// SPDX-License-Identifier: GPL-2.0-or-later
	2	/*
	3	* IS-IS Rout(e)ing protocol - isis_routemap.c
	4	*
	5	* Copyright (C) 2013-2015 Christian Franke <chris@opensourcerouting.org>
	6	*/
	7
	8	#include <zebra.h>
	9
	10	#include "command.h"
	11	#include "filter.h"
	12	#include "hash.h"
	13	#include "if.h"
	14	#include "linklist.h"
	15	#include "log.h"
	16	#include "memory.h"
	17	#include "prefix.h"
	18	#include "plist.h"
	19	#include "routemap.h"
	20	#include "table.h"
	21	#include "frrevent.h"
	22	#include "vty.h"
	23
	24	#include "isis_constants.h"
	25	#include "isis_common.h"
	26	#include "isis_flags.h"
	27	#include "isisd.h"
	28	#include "isis_misc.h"
	29	#include "isis_adjacency.h"
	30	#include "isis_circuit.h"
	31	#include "isis_pdu.h"
	32	#include "isis_lsp.h"
	33	#include "isis_spf.h"
	34	#include "isis_route.h"
	35	#include "isis_zebra.h"
	36	#include "isis_routemap.h"
	37
	38	static enum route_map_cmd_result_t
	39	route_match_ip_address(void rule, const struct prefix prefix, void *object)
	40	{
	41	struct access_list *alist;
	42
	43	alist = access_list_lookup(AFI_IP, (char *)rule);
	44	if (access_list_apply(alist, prefix) != FILTER_DENY)
	45	return RMAP_MATCH;
	46
	47	return RMAP_NOMATCH;
	48	}
	49
	50	static void route_match_ip_address_compile(const char arg)
	51	{
	52	return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
	53	}
	54
	55	static void route_match_ip_address_free(void *rule)
	56	{
	57	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
	58	}
	59
	60	static const struct route_map_rule_cmd route_match_ip_address_cmd = {
	61	"ip address",
	62	route_match_ip_address,
	63	route_match_ip_address_compile,
	64	route_match_ip_address_free
	65	};
	66
	67	/* ------------------------------------------------------------*/
	68
	69	static enum route_map_cmd_result_t
	70	route_match_ip_address_prefix_list(void rule, const struct prefix prefix,
	71	void *object)
	72	{
	73	struct prefix_list *plist;
	74
	75	plist = prefix_list_lookup(AFI_IP, (char *)rule);
	76	if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
	77	return RMAP_MATCH;
	78
	79	return RMAP_NOMATCH;
	80	}
	81
	82	static void route_match_ip_address_prefix_list_compile(const char arg)
	83	{
	84	return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
	85	}
	86
	87	static void route_match_ip_address_prefix_list_free(void *rule)
	88	{
	89	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
	90	}
	91
	92	static const struct route_map_rule_cmd
	93	route_match_ip_address_prefix_list_cmd = {
	94	"ip address prefix-list",
	95	route_match_ip_address_prefix_list,
	96	route_match_ip_address_prefix_list_compile,
	97	route_match_ip_address_prefix_list_free
	98	};
	99
	100	/* ------------------------------------------------------------*/
	101
	102	/* `match tag TAG' */
	103	/* Match function return 1 if match is success else return zero. */
	104	static enum route_map_cmd_result_t
	105	route_match_tag(void rule, const struct prefix p, void *object)
	106	{
	107	route_tag_t *tag;
	108	struct isis_ext_info *info;
	109	route_tag_t info_tag;
	110
	111	tag = rule;
	112	info = object;
	113
	114	info_tag = info->tag;
	115	if (info_tag == *tag)
	116	return RMAP_MATCH;
	117	else
	118	return RMAP_NOMATCH;
	119	}
	120
	121	/* Route map commands for tag matching. */
	122	static const struct route_map_rule_cmd route_match_tag_cmd = {
	123	"tag",
	124	route_match_tag,
	125	route_map_rule_tag_compile,
	126	route_map_rule_tag_free,
	127	};
	128
	129	/* ------------------------------------------------------------*/
	130
	131	static enum route_map_cmd_result_t
	132	route_match_ipv6_address(void rule, const struct prefix prefix, void *object)
	133	{
	134	struct access_list *alist;
	135
	136	alist = access_list_lookup(AFI_IP6, (char *)rule);
	137	if (access_list_apply(alist, prefix) != FILTER_DENY)
	138	return RMAP_MATCH;
	139
	140	return RMAP_NOMATCH;
	141	}
	142
	143	static void route_match_ipv6_address_compile(const char arg)
	144	{
	145	return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
	146	}
	147
	148	static void route_match_ipv6_address_free(void *rule)
	149	{
	150	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
	151	}
	152
	153	static const struct route_map_rule_cmd route_match_ipv6_address_cmd = {
	154	"ipv6 address",
	155	route_match_ipv6_address,
	156	route_match_ipv6_address_compile,
	157	route_match_ipv6_address_free
	158	};
	159
	160	/* ------------------------------------------------------------*/
	161
	162	static enum route_map_cmd_result_t
	163	route_match_ipv6_address_prefix_list(void rule, const struct prefix prefix,
	164	void *object)
	165	{
	166	struct prefix_list *plist;
	167
	168	plist = prefix_list_lookup(AFI_IP6, (char *)rule);
	169	if (prefix_list_apply(plist, prefix) != PREFIX_DENY)
	170	return RMAP_MATCH;
	171
	172	return RMAP_NOMATCH;
	173	}
	174
	175	static void route_match_ipv6_address_prefix_list_compile(const char arg)
	176	{
	177	return XSTRDUP(MTYPE_ROUTE_MAP_COMPILED, arg);
	178	}
	179
	180	static void route_match_ipv6_address_prefix_list_free(void *rule)
	181	{
	182	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
	183	}
	184
	185	static const struct route_map_rule_cmd
	186	route_match_ipv6_address_prefix_list_cmd = {
	187	"ipv6 address prefix-list",
	188	route_match_ipv6_address_prefix_list,
	189	route_match_ipv6_address_prefix_list_compile,
	190	route_match_ipv6_address_prefix_list_free
	191	};
	192
	193	/* ------------------------------------------------------------*/
	194
	195	static enum route_map_cmd_result_t
	196	route_set_metric(void rule, const struct prefix prefix, void *object)
	197	{
	198	uint32_t *metric;
	199	struct isis_ext_info *info;
	200
	201	metric = rule;
	202	info = object;
	203
	204	info->metric = *metric;
	205
	206	return RMAP_OKAY;
	207	}
	208
	209	static void route_set_metric_compile(const char arg)
	210	{
	211	unsigned long metric;
	212	char *endp;
	213	uint32_t *ret;
	214
	215	metric = strtoul(arg, &endp, 10);
	216	if (arg[0] == '\0' \|\| *endp != '\0' \|\| metric > MAX_WIDE_PATH_METRIC)
	217	return NULL;
	218
	219	ret = XCALLOC(MTYPE_ROUTE_MAP_COMPILED, sizeof(*ret));
	220	*ret = metric;
	221
	222	return ret;
	223	}
	224
	225	static void route_set_metric_free(void *rule)
	226	{
	227	XFREE(MTYPE_ROUTE_MAP_COMPILED, rule);
	228	}
	229
	230	static const struct route_map_rule_cmd route_set_metric_cmd = {
	231	"metric",
	232	route_set_metric,
	233	route_set_metric_compile,
	234	route_set_metric_free
	235	};
	236
	237	void isis_route_map_init(void)
	238	{
	239	route_map_init();
	240
	241	route_map_match_ip_address_hook(generic_match_add);
	242	route_map_no_match_ip_address_hook(generic_match_delete);
	243
	244	route_map_match_ip_address_prefix_list_hook(generic_match_add);
	245	route_map_no_match_ip_address_prefix_list_hook(generic_match_delete);
	246
	247	route_map_match_ipv6_address_hook(generic_match_add);
	248	route_map_no_match_ipv6_address_hook(generic_match_delete);
	249
	250	route_map_match_ipv6_address_prefix_list_hook(generic_match_add);
	251	route_map_no_match_ipv6_address_prefix_list_hook(generic_match_delete);
	252
	253	route_map_match_tag_hook(generic_match_add);
	254	route_map_no_match_tag_hook(generic_match_delete);
	255
	256	route_map_set_metric_hook(generic_set_add);
	257	route_map_no_set_metric_hook(generic_set_delete);
	258
	259	route_map_install_match(&route_match_ip_address_cmd);
	260	route_map_install_match(&route_match_ip_address_prefix_list_cmd);
	261	route_map_install_match(&route_match_ipv6_address_cmd);
	262	route_map_install_match(&route_match_ipv6_address_prefix_list_cmd);
	263	route_map_install_match(&route_match_tag_cmd);
	264	route_map_install_set(&route_set_metric_cmd);
	265	}