mirror of
https://git.proxmox.com/git/mirror_frr
synced 2025-11-04 01:43:38 +00:00
acddc0ed3c
Done with a combination of regex'ing and banging my head against a wall. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
97 lines
2.9 KiB
C
97 lines
2.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* SRC-DEST Routing Table
|
|
*
|
|
* Copyright (C) 2017 by David Lamparter & Christian Franke,
|
|
* Open Source Routing / NetDEF Inc.
|
|
*
|
|
* This file is part of FRRouting (FRR)
|
|
*/
|
|
|
|
#ifndef _ZEBRA_SRC_DEST_TABLE_H
|
|
#define _ZEBRA_SRC_DEST_TABLE_H
|
|
|
|
/* old/IPv4/non-srcdest:
|
|
* table -> route_node .info -> [obj]
|
|
*
|
|
* new/IPv6/srcdest:
|
|
* table -...-> srcdest_rnode [prefix = dest] .info -> [obj]
|
|
* .src_table ->
|
|
* srcdest table -...-> route_node [prefix = src] .info -> [obj]
|
|
*
|
|
* non-srcdest routes (src = ::/0) are treated just like before, their
|
|
* information being directly there in the info pointer.
|
|
*
|
|
* srcdest routes are found by looking up destination first, then looking
|
|
* up the source in the "src_table". src_table contains normal route_nodes,
|
|
* whose prefix is the _source_ prefix.
|
|
*
|
|
* NB: info can be NULL on the destination rnode, if there are only srcdest
|
|
* routes for a particular destination prefix.
|
|
*/
|
|
|
|
#include "prefix.h"
|
|
#include "table.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define SRCDEST2STR_BUFFER (2*PREFIX2STR_BUFFER + sizeof(" from "))
|
|
|
|
/* extended route node for IPv6 srcdest routing */
|
|
struct srcdest_rnode;
|
|
|
|
extern route_table_delegate_t _srcdest_dstnode_delegate;
|
|
extern route_table_delegate_t _srcdest_srcnode_delegate;
|
|
|
|
extern struct route_table *srcdest_table_init(void);
|
|
extern struct route_node *srcdest_rnode_get(struct route_table *table,
|
|
union prefixconstptr dst_pu,
|
|
const struct prefix_ipv6 *src_p);
|
|
extern struct route_node *srcdest_rnode_lookup(struct route_table *table,
|
|
union prefixconstptr dst_pu,
|
|
const struct prefix_ipv6 *src_p);
|
|
extern void srcdest_rnode_prefixes(const struct route_node *rn,
|
|
const struct prefix **p,
|
|
const struct prefix **src_p);
|
|
extern const char *srcdest2str(const struct prefix *dst_p,
|
|
const struct prefix_ipv6 *src_p,
|
|
char *str, int size);
|
|
extern const char *srcdest_rnode2str(const struct route_node *rn, char *str,
|
|
int size);
|
|
extern struct route_node *srcdest_route_next(struct route_node *rn);
|
|
|
|
static inline int rnode_is_dstnode(const struct route_node *rn)
|
|
{
|
|
return rn->table->delegate == &_srcdest_dstnode_delegate;
|
|
}
|
|
|
|
static inline int rnode_is_srcnode(const struct route_node *rn)
|
|
{
|
|
return rn->table->delegate == &_srcdest_srcnode_delegate;
|
|
}
|
|
|
|
static inline struct route_table *srcdest_rnode_table(struct route_node *rn)
|
|
{
|
|
if (rnode_is_srcnode(rn)) {
|
|
struct route_node *dst_rn =
|
|
(struct route_node *)route_table_get_info(rn->table);
|
|
return dst_rn->table;
|
|
} else {
|
|
return rn->table;
|
|
}
|
|
}
|
|
static inline void *srcdest_rnode_table_info(struct route_node *rn)
|
|
{
|
|
return route_table_get_info(srcdest_rnode_table(rn));
|
|
}
|
|
|
|
extern struct route_table *srcdest_srcnode_table(struct route_node *rn);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _ZEBRA_SRC_DEST_TABLE_H */
|