frr/isisd/isis_srv6.h

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * This is an implementation of Segment Routing over IPv6 (SRv6) for IS-IS
 * as per RFC 9352
 * https://datatracker.ietf.org/doc/html/rfc9352
 *
 * Copyright (C) 2023 Carmine Scarpitta - University of Rome Tor Vergata
 */

#ifndef _FRR_ISIS_SRV6_H
#define _FRR_ISIS_SRV6_H

/* Maximum SRv6 SID Depths supported by the router */
#define SRV6_MAX_SEG_LEFT 3
#define SRV6_MAX_END_POP 3
#define SRV6_MAX_H_ENCAPS 2
#define SRV6_MAX_END_D 5

/* Per-area IS-IS SRv6 Data Base (SRv6 DB) */
struct isis_srv6_db {

	/* Area SRv6 configuration. */
	struct {
		/* Administrative status of SRv6 */
		bool enabled;

		/* Maximum Segments Left Depth supported by the router */
		uint8_t max_seg_left_msd;

		/* Maximum Maximum End Pop Depth supported by the router */
		uint8_t max_end_pop_msd;

		/* Maximum H.Encaps supported by the router */
		uint8_t max_h_encaps_msd;

		/* Maximum End D MSD supported by the router */
		uint8_t max_end_d_msd;
	} config;
};

extern void isis_srv6_area_init(struct isis_area *area);
extern void isis_srv6_area_term(struct isis_area *area);

void isis_srv6_init(void);
void isis_srv6_term(void);

#endif /* _FRR_ISIS_SRV6_H */