2 * SRC-DEST Routing Table
4 * Copyright (C) 2017 by David Lamparter & Christian Franke,
5 * Open Source Routing / NetDEF Inc.
7 * This file is part of FreeRangeRouting (FRR)
9 * FRR is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2, or (at your option) any
14 * FRR is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with FRR; see the file COPYING. If not, write to the Free
21 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 #ifndef _ZEBRA_SRC_DEST_TABLE_H
26 #define _ZEBRA_SRC_DEST_TABLE_H
28 /* old/IPv4/non-srcdest:
29 * table -> route_node .info -> [obj]
32 * table -...-> srcdest_rnode [prefix = dest] .info -> [obj]
34 * srcdest table -...-> route_node [prefix = src] .info -> [obj]
36 * non-srcdest routes (src = ::/0) are treated just like before, their
37 * information being directly there in the info pointer.
39 * srcdest routes are found by looking up destination first, then looking
40 * up the source in the "src_table". src_table contains normal route_nodes,
41 * whose prefix is the _source_ prefix.
43 * NB: info can be NULL on the destination rnode, if there are only srcdest
44 * routes for a particular destination prefix.
50 #define SRCDEST2STR_BUFFER (2*PREFIX2STR_BUFFER + sizeof(" from "))
52 /* extended route node for IPv6 srcdest routing */
55 extern route_table_delegate_t _srcdest_dstnode_delegate
;
56 extern route_table_delegate_t _srcdest_srcnode_delegate
;
58 extern struct route_table
*srcdest_table_init(void);
59 extern struct route_node
*srcdest_rnode_get(struct route_table
*table
,
60 union prefixptr dst_pu
,
61 struct prefix_ipv6
*src_p
);
62 extern struct route_node
*srcdest_rnode_lookup(struct route_table
*table
,
63 union prefixptr dst_pu
,
64 struct prefix_ipv6
*src_p
);
65 extern void srcdest_rnode_prefixes (struct route_node
*rn
, struct prefix
**p
,
66 struct prefix
**src_p
);
67 extern const char *srcdest_rnode2str(struct route_node
*rn
, char *str
, int size
);
68 extern struct route_node
*srcdest_route_next(struct route_node
*rn
);
71 rnode_is_dstnode (struct route_node
*rn
)
73 return rn
->table
->delegate
== &_srcdest_dstnode_delegate
;
77 rnode_is_srcnode (struct route_node
*rn
)
79 return rn
->table
->delegate
== &_srcdest_srcnode_delegate
;
82 static inline struct route_table
*
83 srcdest_rnode_table (struct route_node
*rn
)
85 if (rnode_is_srcnode (rn
))
87 struct route_node
*dst_rn
= rn
->table
->info
;
96 srcdest_rnode_table_info (struct route_node
*rn
)
98 return srcdest_rnode_table(rn
)->info
;
101 #endif /* _ZEBRA_SRC_DEST_TABLE_H */