[mirror_frr.git] / bgpd / bgp_mplsvpn.h

/* MPLS-VPN
 * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
 *
 * This file is part of GxNU 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
 */

#ifndef _QUAGGA_BGP_MPLSVPN_H
#define _QUAGGA_BGP_MPLSVPN_H

#include "bgpd/bgp_route.h"
#include "bgpd/bgp_rd.h"
#include "bgpd/bgp_zebra.h"

#define MPLS_LABEL_IS_SPECIAL(label) ((label) <= MPLS_LABEL_EXTENSION)
#define MPLS_LABEL_IS_NULL(label)                                              \
	((label) == MPLS_LABEL_IPV4_EXPLICIT_NULL                              \
	 || (label) == MPLS_LABEL_IPV6_EXPLICIT_NULL                           \
	 || (label) == MPLS_LABEL_IMPLICIT_NULL)

#define BGP_VPNVX_HELP_STR                                                     \
	"Address Family\n"                                                     \
	"Address Family\n"

#define V4_HEADER                                                              \
	"   Network          Next Hop            Metric LocPrf Weight Path\n"
#define V4_HEADER_TAG "   Network          Next Hop      In tag/Out tag\n"
#define V4_HEADER_OVERLAY                                                      \
	"   Network          Next Hop      EthTag    Overlay Index   RouterMac\n"

extern void bgp_mplsvpn_init(void);
extern int bgp_nlri_parse_vpn(struct peer *, struct attr *, struct bgp_nlri *);
extern uint32_t decode_label(mpls_label_t *);
extern void encode_label(mpls_label_t, mpls_label_t *);

extern int argv_find_and_parse_vpnvx(struct cmd_token **argv, int argc,
				     int *index, afi_t *afi);
extern int bgp_show_mpls_vpn(struct vty *vty, afi_t afi, struct prefix_rd *prd,
			     enum bgp_show_type type, void *output_arg,
			     int tags, bool use_json);

extern void vpn_leak_from_vrf_update(struct bgp *bgp_vpn, struct bgp *bgp_vrf,
				     struct bgp_path_info *path_vrf);

extern void vpn_leak_from_vrf_withdraw(struct bgp *bgp_vpn, struct bgp *bgp_vrf,
				       struct bgp_path_info *path_vrf);

extern void vpn_leak_from_vrf_withdraw_all(struct bgp *bgp_vpn,
					   struct bgp *bgp_vrf, afi_t afi);

extern void vpn_leak_from_vrf_update_all(struct bgp *bgp_vpn,
					 struct bgp *bgp_vrf, afi_t afi);

extern void vpn_leak_to_vrf_withdraw_all(struct bgp *bgp_vrf, afi_t afi);

extern void vpn_leak_to_vrf_update_all(struct bgp *bgp_vrf, struct bgp *bgp_vpn,
				       afi_t afi);

extern void vpn_leak_to_vrf_update(struct bgp *bgp_vpn,
				   struct bgp_path_info *path_vpn);

extern void vpn_leak_to_vrf_withdraw(struct bgp *bgp_vpn,
				     struct bgp_path_info *path_vpn);

extern void vpn_leak_zebra_vrf_label_update(struct bgp *bgp, afi_t afi);
extern void vpn_leak_zebra_vrf_label_withdraw(struct bgp *bgp, afi_t afi);
extern int vpn_leak_label_callback(mpls_label_t label, void *lblid, bool alloc);
extern void vrf_import_from_vrf(struct bgp *to_bgp, struct bgp *from_bgp,
				afi_t afi, safi_t safi);
void vrf_unimport_from_vrf(struct bgp *to_bgp, struct bgp *from_bgp,
			   afi_t afi, safi_t safi);

static inline int vpn_leak_to_vpn_active(struct bgp *bgp_vrf, afi_t afi,
					 const char **pmsg)
{
	if (bgp_vrf->inst_type != BGP_INSTANCE_TYPE_VRF
		&& bgp_vrf->inst_type != BGP_INSTANCE_TYPE_DEFAULT) {

		if (pmsg)
			*pmsg = "source bgp instance neither vrf nor default";
		return 0;
	}

	/* Is vrf configured to export to vpn? */
	if (!CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST],
			BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT)
	    && !CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST],
			   BGP_CONFIG_VRF_TO_VRF_EXPORT)) {
		if (pmsg)
			*pmsg = "export not set";
		return 0;
	}

	/* Is there an RT list set? */
	if (!bgp_vrf->vpn_policy[afi].rtlist[BGP_VPN_POLICY_DIR_TOVPN]) {
		if (pmsg)
			*pmsg = "rtlist tovpn not defined";
		return 0;
	}

	/* Is there an RD set? */
	if (!CHECK_FLAG(bgp_vrf->vpn_policy[afi].flags,
			BGP_VPN_POLICY_TOVPN_RD_SET)) {
		if (pmsg)
			*pmsg = "rd not defined";
		return 0;
	}

	/* Is a route-map specified, but not defined? */
	if (bgp_vrf->vpn_policy[afi].rmap_name[BGP_VPN_POLICY_DIR_TOVPN] &&
		!bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_TOVPN]) {
		if (pmsg)
			*pmsg = "route-map tovpn named but not defined";
		return 0;
	}

	/* Is there an "auto" export label that isn't allocated yet? */
	if (CHECK_FLAG(bgp_vrf->vpn_policy[afi].flags,
		BGP_VPN_POLICY_TOVPN_LABEL_AUTO) &&
		(bgp_vrf->vpn_policy[afi].tovpn_label == MPLS_LABEL_NONE)) {

		if (pmsg)
			*pmsg = "auto label not allocated";
		return 0;
	}

	return 1;
}

static inline int vpn_leak_from_vpn_active(struct bgp *bgp_vrf, afi_t afi,
					   const char **pmsg)
{
	if (bgp_vrf->inst_type != BGP_INSTANCE_TYPE_VRF
		&& bgp_vrf->inst_type != BGP_INSTANCE_TYPE_DEFAULT) {

		if (pmsg)
			*pmsg = "destination bgp instance neither vrf nor default";
		return 0;
	}

	if (bgp_vrf->vrf_id == VRF_UNKNOWN) {
		if (pmsg)
			*pmsg = "destination bgp instance vrf is VRF_UNKNOWN";
		return 0;
	}

	/* Is vrf configured to import from vpn? */
	if (!CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST],
			BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT)
	    && !CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST],
			   BGP_CONFIG_VRF_TO_VRF_IMPORT)) {
		if (pmsg)
			*pmsg = "import not set";
		return 0;
	}

	/* Is there an RT list set? */
	if (!bgp_vrf->vpn_policy[afi].rtlist[BGP_VPN_POLICY_DIR_FROMVPN]) {
		if (pmsg)
			*pmsg = "rtlist fromvpn not defined";
		return 0;
	}

	/* Is a route-map specified, but not defined? */
	if (bgp_vrf->vpn_policy[afi].rmap_name[BGP_VPN_POLICY_DIR_FROMVPN] &&
		!bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_FROMVPN]) {
		if (pmsg)
			*pmsg = "route-map fromvpn named but not defined";
		return 0;
	}
	return 1;
}

static inline void vpn_leak_prechange(vpn_policy_direction_t direction,
				      afi_t afi, struct bgp *bgp_vpn,
				      struct bgp *bgp_vrf)
{
	/* Detect when default bgp instance is not (yet) defined by config */
	if (!bgp_vpn)
		return;

	if ((direction == BGP_VPN_POLICY_DIR_FROMVPN) &&
		vpn_leak_from_vpn_active(bgp_vrf, afi, NULL)) {

		vpn_leak_to_vrf_withdraw_all(bgp_vrf, afi);
	}
	if ((direction == BGP_VPN_POLICY_DIR_TOVPN) &&
		vpn_leak_to_vpn_active(bgp_vrf, afi, NULL)) {

		vpn_leak_from_vrf_withdraw_all(bgp_vpn, bgp_vrf, afi);
	}
}

static inline void vpn_leak_postchange(vpn_policy_direction_t direction,
				       afi_t afi, struct bgp *bgp_vpn,
				       struct bgp *bgp_vrf)
{
	/* Detect when default bgp instance is not (yet) defined by config */
	if (!bgp_vpn)
		return;

	if (direction == BGP_VPN_POLICY_DIR_FROMVPN)
		vpn_leak_to_vrf_update_all(bgp_vrf, bgp_vpn, afi);
	if (direction == BGP_VPN_POLICY_DIR_TOVPN) {

		if (bgp_vrf->vpn_policy[afi].tovpn_label !=
			bgp_vrf->vpn_policy[afi]
			       .tovpn_zebra_vrf_label_last_sent) {
			vpn_leak_zebra_vrf_label_update(bgp_vrf, afi);
		}

		vpn_leak_from_vrf_update_all(bgp_vpn, bgp_vrf, afi);
	}
}

extern void vpn_policy_routemap_event(const char *rmap_name);

extern vrf_id_t get_first_vrf_for_redirect_with_rt(struct ecommunity *eckey);

extern void vpn_leak_postchange_all(void);

#endif /* _QUAGGA_BGP_MPLSVPN_H */
Commit	Line	Data
718e3744	1	/* MPLS-VPN
896014f4 DL	2	* Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
896014f4 DL	3	*
8557760c	4	* This file is part of GxNU Zebra.
896014f4 DL	5	*
	6	* GNU Zebra is free software; you can redistribute it and/or modify it
	7	* under the terms of the GNU General Public License as published by the
	8	* Free Software Foundation; either version 2, or (at your option) any
	9	* later version.
	10	*
	11	* GNU Zebra is distributed in the hope that it will be useful, but
	12	* WITHOUT ANY WARRANTY; without even the implied warranty of
	13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	* General Public License for more details.
	15	*
	16	* You should have received a copy of the GNU General Public License along
	17	* with this program; see the file COPYING; if not, write to the Free Software
	18	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	*/
718e3744	20
00d252cb	21	#ifndef _QUAGGA_BGP_MPLSVPN_H
	22	#define _QUAGGA_BGP_MPLSVPN_H
	23
4f280b15	24	#include "bgpd/bgp_route.h"
8557760c	25	#include "bgpd/bgp_rd.h"
ddb5b488	26	#include "bgpd/bgp_zebra.h"
718e3744	27
d62a17ae	28	#define MPLS_LABEL_IS_SPECIAL(label) ((label) <= MPLS_LABEL_EXTENSION)
	29	#define MPLS_LABEL_IS_NULL(label) \
	30	((label) == MPLS_LABEL_IPV4_EXPLICIT_NULL \
	31	\|\| (label) == MPLS_LABEL_IPV6_EXPLICIT_NULL \
	32	\|\| (label) == MPLS_LABEL_IMPLICIT_NULL)
65efcfce	33
d62a17ae	34	#define BGP_VPNVX_HELP_STR \
	35	"Address Family\n" \
	36	"Address Family\n"
d6902373	37
d62a17ae	38	#define V4_HEADER \
	39	" Network Next Hop Metric LocPrf Weight Path\n"
	40	#define V4_HEADER_TAG " Network Next Hop In tag/Out tag\n"
	41	#define V4_HEADER_OVERLAY \
	42	" Network Next Hop EthTag Overlay Index RouterMac\n"
96ade3ed	43
d62a17ae	44	extern void bgp_mplsvpn_init(void);
d62a17ae	45	extern int bgp_nlri_parse_vpn(struct peer , struct attr , struct bgp_nlri *);
d7c0a89a	46	extern uint32_t decode_label(mpls_label_t *);
9bedbb1e	47	extern void encode_label(mpls_label_t, mpls_label_t *);
00d252cb	48
d62a17ae	49	extern int argv_find_and_parse_vpnvx(struct cmd_token **argv, int argc,
	50	int index, afi_t afi);
	51	extern int bgp_show_mpls_vpn(struct vty vty, afi_t afi, struct prefix_rd prd,
	52	enum bgp_show_type type, void *output_arg,
9f049418	53	int tags, bool use_json);
d6902373	54
ddb5b488	55	extern void vpn_leak_from_vrf_update(struct bgp bgp_vpn, struct bgp bgp_vrf,
40381db7	56	struct bgp_path_info *path_vrf);
ddb5b488 PZ	57
ddb5b488 PZ	58	extern void vpn_leak_from_vrf_withdraw(struct bgp bgp_vpn, struct bgp bgp_vrf,
40381db7	59	struct bgp_path_info *path_vrf);
ddb5b488 PZ	60
	61	extern void vpn_leak_from_vrf_withdraw_all(struct bgp *bgp_vpn,
	62	struct bgp *bgp_vrf, afi_t afi);
	63
	64	extern void vpn_leak_from_vrf_update_all(struct bgp *bgp_vpn,
	65	struct bgp *bgp_vrf, afi_t afi);
	66
	67	extern void vpn_leak_to_vrf_withdraw_all(struct bgp *bgp_vrf, afi_t afi);
	68
	69	extern void vpn_leak_to_vrf_update_all(struct bgp bgp_vrf, struct bgp bgp_vpn,
	70	afi_t afi);
	71
	72	extern void vpn_leak_to_vrf_update(struct bgp *bgp_vpn,
40381db7	73	struct bgp_path_info *path_vpn);
ddb5b488 PZ	74
ddb5b488 PZ	75	extern void vpn_leak_to_vrf_withdraw(struct bgp *bgp_vpn,
40381db7	76	struct bgp_path_info *path_vpn);
ddb5b488 PZ	77
	78	extern void vpn_leak_zebra_vrf_label_update(struct bgp *bgp, afi_t afi);
	79	extern void vpn_leak_zebra_vrf_label_withdraw(struct bgp *bgp, afi_t afi);
e70e9f8e	80	extern int vpn_leak_label_callback(mpls_label_t label, void *lblid, bool alloc);
1d4e8b0d	81	extern void vrf_import_from_vrf(struct bgp to_bgp, struct bgp from_bgp,
44338987	82	afi_t afi, safi_t safi);
1d4e8b0d	83	void vrf_unimport_from_vrf(struct bgp to_bgp, struct bgp from_bgp,
44338987	84	afi_t afi, safi_t safi);
ddb5b488 PZ	85
	86	static inline int vpn_leak_to_vpn_active(struct bgp *bgp_vrf, afi_t afi,
	87	const char **pmsg)
	88	{
d555f3e9 PZ	89	if (bgp_vrf->inst_type != BGP_INSTANCE_TYPE_VRF
	90	&& bgp_vrf->inst_type != BGP_INSTANCE_TYPE_DEFAULT) {
	91
	92	if (pmsg)
	93	*pmsg = "source bgp instance neither vrf nor default";
	94	return 0;
	95	}
	96
ddb5b488 PZ	97	/* Is vrf configured to export to vpn? */
ddb5b488 PZ	98	if (!CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST],
12a844a5 DS	99	BGP_CONFIG_VRF_TO_MPLSVPN_EXPORT)
	100	&& !CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST],
	101	BGP_CONFIG_VRF_TO_VRF_EXPORT)) {
ddb5b488 PZ	102	if (pmsg)
	103	*pmsg = "export not set";
	104	return 0;
	105	}
	106
	107	/* Is there an RT list set? */
	108	if (!bgp_vrf->vpn_policy[afi].rtlist[BGP_VPN_POLICY_DIR_TOVPN]) {
	109	if (pmsg)
	110	*pmsg = "rtlist tovpn not defined";
	111	return 0;
	112	}
	113
	114	/* Is there an RD set? */
	115	if (!CHECK_FLAG(bgp_vrf->vpn_policy[afi].flags,
	116	BGP_VPN_POLICY_TOVPN_RD_SET)) {
	117	if (pmsg)
	118	*pmsg = "rd not defined";
	119	return 0;
	120	}
e70e9f8e	121
d92a55df PZ	122	/* Is a route-map specified, but not defined? */
	123	if (bgp_vrf->vpn_policy[afi].rmap_name[BGP_VPN_POLICY_DIR_TOVPN] &&
	124	!bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_TOVPN]) {
	125	if (pmsg)
	126	*pmsg = "route-map tovpn named but not defined";
	127	return 0;
	128	}
	129
e70e9f8e PZ	130	/* Is there an "auto" export label that isn't allocated yet? */
	131	if (CHECK_FLAG(bgp_vrf->vpn_policy[afi].flags,
	132	BGP_VPN_POLICY_TOVPN_LABEL_AUTO) &&
	133	(bgp_vrf->vpn_policy[afi].tovpn_label == MPLS_LABEL_NONE)) {
	134
	135	if (pmsg)
	136	*pmsg = "auto label not allocated";
	137	return 0;
	138	}
	139
ddb5b488 PZ	140	return 1;
	141	}
	142
	143	static inline int vpn_leak_from_vpn_active(struct bgp *bgp_vrf, afi_t afi,
b9c7bc5a	144	const char **pmsg)
ddb5b488	145	{
ddb5b488	146	if (bgp_vrf->inst_type != BGP_INSTANCE_TYPE_VRF
d555f3e9	147	&& bgp_vrf->inst_type != BGP_INSTANCE_TYPE_DEFAULT) {
ddb5b488 PZ	148
	149	if (pmsg)
	150	*pmsg = "destination bgp instance neither vrf nor default";
	151	return 0;
	152	}
	153
e504cf3b DS	154	if (bgp_vrf->vrf_id == VRF_UNKNOWN) {
	155	if (pmsg)
	156	*pmsg = "destination bgp instance vrf is VRF_UNKNOWN";
	157	return 0;
	158	}
	159
b9c7bc5a PZ	160	/* Is vrf configured to import from vpn? */
b9c7bc5a PZ	161	if (!CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST],
12a844a5 DS	162	BGP_CONFIG_MPLSVPN_TO_VRF_IMPORT)
	163	&& !CHECK_FLAG(bgp_vrf->af_flags[afi][SAFI_UNICAST],
	164	BGP_CONFIG_VRF_TO_VRF_IMPORT)) {
ddb5b488	165	if (pmsg)
b9c7bc5a	166	*pmsg = "import not set";
ddb5b488 PZ	167	return 0;
ddb5b488 PZ	168	}
d92a55df PZ	169
d92a55df PZ	170	/* Is there an RT list set? */
ddb5b488 PZ	171	if (!bgp_vrf->vpn_policy[afi].rtlist[BGP_VPN_POLICY_DIR_FROMVPN]) {
	172	if (pmsg)
	173	*pmsg = "rtlist fromvpn not defined";
	174	return 0;
	175	}
d92a55df PZ	176
	177	/* Is a route-map specified, but not defined? */
	178	if (bgp_vrf->vpn_policy[afi].rmap_name[BGP_VPN_POLICY_DIR_FROMVPN] &&
	179	!bgp_vrf->vpn_policy[afi].rmap[BGP_VPN_POLICY_DIR_FROMVPN]) {
	180	if (pmsg)
	181	*pmsg = "route-map fromvpn named but not defined";
	182	return 0;
	183	}
ddb5b488 PZ	184	return 1;
	185	}
	186
	187	static inline void vpn_leak_prechange(vpn_policy_direction_t direction,
	188	afi_t afi, struct bgp *bgp_vpn,
	189	struct bgp *bgp_vrf)
	190	{
3bd70bf8 PZ	191	/* Detect when default bgp instance is not (yet) defined by config */
	192	if (!bgp_vpn)
	193	return;
	194
d555f3e9 PZ	195	if ((direction == BGP_VPN_POLICY_DIR_FROMVPN) &&
	196	vpn_leak_from_vpn_active(bgp_vrf, afi, NULL)) {
	197
ddb5b488	198	vpn_leak_to_vrf_withdraw_all(bgp_vrf, afi);
d555f3e9 PZ	199	}
	200	if ((direction == BGP_VPN_POLICY_DIR_TOVPN) &&
	201	vpn_leak_to_vpn_active(bgp_vrf, afi, NULL)) {
	202
ddb5b488	203	vpn_leak_from_vrf_withdraw_all(bgp_vpn, bgp_vrf, afi);
d555f3e9	204	}
ddb5b488 PZ	205	}
	206
	207	static inline void vpn_leak_postchange(vpn_policy_direction_t direction,
	208	afi_t afi, struct bgp *bgp_vpn,
	209	struct bgp *bgp_vrf)
	210	{
3bd70bf8 PZ	211	/* Detect when default bgp instance is not (yet) defined by config */
	212	if (!bgp_vpn)
	213	return;
	214
ddb5b488 PZ	215	if (direction == BGP_VPN_POLICY_DIR_FROMVPN)
	216	vpn_leak_to_vrf_update_all(bgp_vrf, bgp_vpn, afi);
	217	if (direction == BGP_VPN_POLICY_DIR_TOVPN) {
	218
d555f3e9 PZ	219	if (bgp_vrf->vpn_policy[afi].tovpn_label !=
d555f3e9 PZ	220	bgp_vrf->vpn_policy[afi]
ddb5b488 PZ	221	.tovpn_zebra_vrf_label_last_sent) {
	222	vpn_leak_zebra_vrf_label_update(bgp_vrf, afi);
	223	}
	224
	225	vpn_leak_from_vrf_update_all(bgp_vpn, bgp_vrf, afi);
	226	}
ddb5b488 PZ	227	}
	228
	229	extern void vpn_policy_routemap_event(const char *rmap_name);
	230
301ad80a PG	231	extern vrf_id_t get_first_vrf_for_redirect_with_rt(struct ecommunity *eckey);
301ad80a PG	232
3bd70bf8 PZ	233	extern void vpn_leak_postchange_all(void);
3bd70bf8 PZ	234
00d252cb	235	#endif /* _QUAGGA_BGP_MPLSVPN_H */