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1/*
2 * Zebra next hop tracking header
3 * Copyright (C) 2013 Cumulus Networks, Inc.
4 *
5 * This file is part of GNU Zebra.
6 *
7 * GNU Zebra is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
10 * later version.
11 *
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
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17 * You should have received a copy of the GNU General Public License along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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20 */
21
22#ifndef _ZEBRA_RNH_H
23#define _ZEBRA_RNH_H
24
25#include "prefix.h"
26#include "vty.h"
27
28/* Nexthop structure. */
d62a17ae 29struct rnh {
d7c0a89a 30 uint8_t flags;
078430f6 31
fc9a856f 32#define ZEBRA_NHT_CONNECTED 0x1
70c0f184 33#define ZEBRA_NHT_DELETED 0x2
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34#define ZEBRA_NHT_EXACT_MATCH 0x4
35
d62a17ae 36 /* VRF identifier. */
37 vrf_id_t vrf_id;
d82ae0de 38
d62a17ae 39 struct route_entry *state;
40 struct prefix resolved_route;
41 struct list *client_list;
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42
43 /* pseudowires dependent on this nh */
44 struct list *zebra_pseudowire_list;
45
d62a17ae 46 struct route_node *node;
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47
48 /*
49 * if this has been filtered for the client
50 */
51 int filtered[ZEBRA_ROUTE_MAX];
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52};
53
d62a17ae 54typedef enum { RNH_NEXTHOP_TYPE, RNH_IMPORT_CHECK_TYPE } rnh_type_t;
078430f6 55
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56extern int zebra_rnh_ip_default_route;
57extern int zebra_rnh_ipv6_default_route;
58
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59extern void zebra_rnh_init(void);
60
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61static inline int rnh_resolve_via_default(int family)
62{
63 if (((family == AF_INET) && zebra_rnh_ip_default_route)
64 || ((family == AF_INET6) && zebra_rnh_ipv6_default_route))
65 return 1;
66 else
67 return 0;
68}
69
b72ede27 70extern struct rnh *zebra_add_rnh(struct prefix *p, vrf_id_t vrfid,
1d30d1f4 71 rnh_type_t type, bool *exists);
b72ede27 72extern struct rnh *zebra_lookup_rnh(struct prefix *p, vrf_id_t vrfid,
078430f6 73 rnh_type_t type);
d62a17ae 74extern void zebra_free_rnh(struct rnh *rnh);
078430f6 75extern void zebra_delete_rnh(struct rnh *rnh, rnh_type_t type);
d62a17ae 76extern void zebra_add_rnh_client(struct rnh *rnh, struct zserv *client,
77 rnh_type_t type, vrf_id_t vrfid);
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78extern void zebra_register_rnh_pseudowire(vrf_id_t, struct zebra_pw *);
79extern void zebra_deregister_rnh_pseudowire(vrf_id_t, struct zebra_pw *);
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80extern void zebra_remove_rnh_client(struct rnh *rnh, struct zserv *client,
81 rnh_type_t type);
6d53d7b1 82extern void zebra_evaluate_rnh(struct zebra_vrf *zvrf, int family, int force,
d62a17ae 83 rnh_type_t type, struct prefix *p);
84extern void zebra_print_rnh_table(vrf_id_t vrfid, int family, struct vty *vty,
85 rnh_type_t);
fb018d25 86extern char *rnh_str(struct rnh *rnh, char *buf, int size);
fb018d25 87#endif /*_ZEBRA_RNH_H */