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1 | /** | |
2 | * bfd.h: BFD definitions and structures | |
3 | * | |
4 | * @copyright Copyright (C) 2015 Cumulus Networks, Inc. | |
5 | * | |
6 | * This file is part of GNU Zebra. | |
7 | * | |
8 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * GNU Zebra is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; see the file COPYING; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
21 | */ | |
22 | ||
23 | #ifndef _ZEBRA_BFD_H | |
24 | #define _ZEBRA_BFD_H | |
25 | ||
26 | #include "lib/json.h" | |
27 | #include "lib/zclient.h" | |
28 | ||
29 | #define BFD_DEF_MIN_RX 300 | |
30 | #define BFD_MIN_MIN_RX 50 | |
31 | #define BFD_MAX_MIN_RX 60000 | |
32 | #define BFD_DEF_MIN_TX 300 | |
33 | #define BFD_MIN_MIN_TX 50 | |
34 | #define BFD_MAX_MIN_TX 60000 | |
35 | #define BFD_DEF_DETECT_MULT 3 | |
36 | #define BFD_MIN_DETECT_MULT 2 | |
37 | #define BFD_MAX_DETECT_MULT 255 | |
38 | ||
39 | #define BFD_GBL_FLAG_IN_SHUTDOWN (1 << 0) /* The daemon in shutdown */ | |
40 | struct bfd_gbl { | |
41 | uint16_t flags; | |
42 | }; | |
43 | ||
44 | #define BFD_FLAG_PARAM_CFG (1 << 0) /* parameters have been configured */ | |
45 | #define BFD_FLAG_BFD_REG (1 << 1) /* Peer registered with BFD */ | |
46 | #define BFD_FLAG_BFD_TYPE_MULTIHOP (1 << 2) /* Peer registered with BFD as multihop */ | |
47 | ||
48 | #define BFD_STATUS_UNKNOWN (1 << 0) /* BFD session status never received */ | |
49 | #define BFD_STATUS_DOWN (1 << 1) /* BFD session status is down */ | |
50 | #define BFD_STATUS_UP (1 << 2) /* BFD session status is up */ | |
51 | ||
52 | enum bfd_sess_type { | |
53 | BFD_TYPE_NOT_CONFIGURED, | |
54 | BFD_TYPE_SINGLEHOP, | |
55 | BFD_TYPE_MULTIHOP | |
56 | }; | |
57 | ||
58 | struct bfd_info { | |
59 | uint16_t flags; | |
60 | uint8_t detect_mult; | |
61 | uint32_t desired_min_tx; | |
62 | uint32_t required_min_rx; | |
63 | time_t last_update; | |
64 | uint8_t status; | |
65 | enum bfd_sess_type type; | |
66 | }; | |
67 | ||
68 | extern struct bfd_info *bfd_info_create(void); | |
69 | ||
70 | extern void bfd_info_free(struct bfd_info **bfd_info); | |
71 | ||
72 | extern int bfd_validate_param(struct vty *vty, const char *dm_str, | |
73 | const char *rx_str, const char *tx_str, | |
74 | uint8_t *dm_val, uint32_t *rx_val, | |
75 | uint32_t *tx_val); | |
76 | ||
77 | extern void bfd_set_param(struct bfd_info **bfd_info, uint32_t min_rx, | |
78 | uint32_t min_tx, uint8_t detect_mult, int defaults, | |
79 | int *command); | |
80 | extern void bfd_peer_sendmsg(struct zclient *zclient, struct bfd_info *bfd_info, | |
81 | int family, void *dst_ip, void *src_ip, | |
82 | char *if_name, int ttl, int multihop, int command, | |
83 | int set_flag, vrf_id_t vrf_id); | |
84 | ||
85 | extern const char *bfd_get_command_dbg_str(int command); | |
86 | ||
87 | extern struct interface *bfd_get_peer_info(struct stream *s, struct prefix *dp, | |
88 | struct prefix *sp, int *status, | |
89 | vrf_id_t vrf_id); | |
90 | ||
91 | const char *bfd_get_status_str(int status); | |
92 | ||
93 | extern void bfd_show_param(struct vty *vty, struct bfd_info *bfd_info, | |
94 | int bfd_tag, int extra_space, bool use_json, | |
95 | json_object *json_obj); | |
96 | ||
97 | extern void bfd_show_info(struct vty *vty, struct bfd_info *bfd_info, | |
98 | int multihop, int extra_space, bool use_json, | |
99 | json_object *json_obj); | |
100 | ||
101 | extern void bfd_client_sendmsg(struct zclient *zclient, int command); | |
102 | ||
103 | extern void bfd_gbl_init(void); | |
104 | ||
105 | extern void bfd_gbl_exit(void); | |
106 | ||
107 | #endif /* _ZEBRA_BFD_H */ |