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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* IS-IS Rout(e)ing protocol - Multi Topology Support
*
* Copyright (C) 2017 Christian Franke
*
* This file is part of FRRouting (FRR)
*/
#ifndef ISIS_MT_H
#define ISIS_MT_H
#define ISIS_MT_MASK 0x0fff
#define ISIS_MT_OL_MASK 0x8000
#define ISIS_MT_AT_MASK 0x4000
#define ISIS_MT_IPV4_UNICAST 0
#define ISIS_MT_STANDARD ISIS_MT_IPV4_UNICAST
#define ISIS_MT_IPV4_MGMT 1
#define ISIS_MT_IPV6_UNICAST 2
#define ISIS_MT_IPV4_MULTICAST 3
#define ISIS_MT_IPV6_MULTICAST 4
#define ISIS_MT_IPV6_MGMT 5
#define ISIS_MT_IPV6_DSTSRC 3996 /* FIXME: IANA */
/* Use first Reserved Flag to indicate that there is no MT Topology active */
#define ISIS_MT_DISABLE 4096
#define ISIS_MT_NAMES \
"<standard" \
"|ipv4-mgmt" \
"|ipv6-unicast" \
"|ipv4-multicast" \
"|ipv6-multicast" \
"|ipv6-mgmt" \
"|ipv6-dstsrc" \
">"
#define ISIS_MT_DESCRIPTIONS \
"IPv4 unicast topology\n" \
"IPv4 management topology\n" \
"IPv6 unicast topology\n" \
"IPv4 multicast topology\n" \
"IPv6 multicast topology\n" \
"IPv6 management topology\n" \
"IPv6 dst-src topology\n" \
""
#define ISIS_MT_INFO_FIELDS uint16_t mtid;
struct list;
struct isis_area_mt_setting {
ISIS_MT_INFO_FIELDS
bool enabled;
bool overload;
};
struct isis_circuit_mt_setting {
ISIS_MT_INFO_FIELDS
bool enabled;
};
const char *isis_mtid2str(uint16_t mtid);
uint16_t isis_str2mtid(const char *name);
struct isis_adjacency;
struct isis_area;
struct isis_circuit;
struct tlvs;
struct te_is_neigh;
struct isis_tlvs;
bool isis_area_ipv6_dstsrc_enabled(struct isis_area *area);
uint16_t isis_area_ipv6_topology(struct isis_area *area);
struct isis_area_mt_setting *area_lookup_mt_setting(struct isis_area *area,
uint16_t mtid);
struct isis_area_mt_setting *area_new_mt_setting(struct isis_area *area,
uint16_t mtid);
void area_add_mt_setting(struct isis_area *area,
struct isis_area_mt_setting *setting);
void area_mt_init(struct isis_area *area);
void area_mt_finish(struct isis_area *area);
struct isis_area_mt_setting *area_get_mt_setting(struct isis_area *area,
uint16_t mtid);
int area_write_mt_settings(struct isis_area *area, struct vty *vty);
bool area_is_mt(struct isis_area *area);
struct isis_area_mt_setting **area_mt_settings(struct isis_area *area,
unsigned int *mt_count);
struct isis_circuit_mt_setting *
circuit_lookup_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
struct isis_circuit_mt_setting *
circuit_new_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
void circuit_add_mt_setting(struct isis_circuit *circuit,
struct isis_circuit_mt_setting *setting);
void circuit_mt_init(struct isis_circuit *circuit);
void circuit_mt_finish(struct isis_circuit *circuit);
struct isis_circuit_mt_setting *
circuit_get_mt_setting(struct isis_circuit *circuit, uint16_t mtid);
struct isis_circuit_mt_setting **
circuit_mt_settings(struct isis_circuit *circuit, unsigned int *mt_count);
bool tlvs_to_adj_mt_set(struct isis_tlvs *tlvs, bool v4_usable, bool v6_usable,
struct isis_adjacency *adj);
bool adj_has_mt(struct isis_adjacency *adj, uint16_t mtid);
void adj_mt_finish(struct isis_adjacency *adj);
void tlvs_add_mt_bcast(struct isis_tlvs *tlvs, struct isis_circuit *circuit,
int level, uint8_t *id, uint32_t metric);
void tlvs_add_mt_p2p(struct isis_tlvs *tlvs, struct isis_circuit *circuit,
uint8_t *id, uint32_t metric);
void mt_init(void);
#endif
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