1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* BIRD -- Router Advertisement Configuration
*
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
CF_HDR
#include "proto/bfd/bfd.h"
CF_DEFINES
#define BFD_CFG ((struct bfd_config *) this_proto)
#define BFD_IFACE ((struct bfd_iface_config *) this_ipatt)
#define BFD_NEIGHBOR this_bfd_neighbor
static struct bfd_neighbor *this_bfd_neighbor;
extern struct bfd_config *bfd_cf;
CF_DECLS
CF_KEYWORDS(BFD, MIN, IDLE, RX, TX, INTERVAL, MULTIPLIER, PASSIVE,
INTERFACE, MULTIHOP, NEIGHBOR, DEV, LOCAL, AUTHENTICATION,
NONE, SIMPLE, METICULOUS, KEYED, MD5, SHA1)
%type <iface> bfd_neigh_iface
%type <a> bfd_neigh_local
%type <i> bfd_neigh_multihop bfd_auth_type
CF_GRAMMAR
proto: bfd_proto ;
bfd_proto_start: proto_start BFD
{
this_proto = proto_config_new(&proto_bfd, $1);
init_list(&BFD_CFG->patt_list);
init_list(&BFD_CFG->neigh_list);
if (bfd_cf)
cf_error("Only one BFD instance allowed");
bfd_cf = BFD_CFG;
};
bfd_proto_item:
proto_item
| INTERFACE bfd_iface
| MULTIHOP bfd_multihop
| NEIGHBOR bfd_neighbor
;
bfd_proto_opts:
/* empty */
| bfd_proto_opts bfd_proto_item ';'
;
bfd_proto:
bfd_proto_start proto_name '{' bfd_proto_opts '}';
bfd_iface_start:
{
this_ipatt = cfg_allocz(sizeof(struct bfd_iface_config));
add_tail(&BFD_CFG->patt_list, NODE this_ipatt);
init_list(&this_ipatt->ipn_list);
BFD_IFACE->min_rx_int = BFD_DEFAULT_MIN_RX_INT;
BFD_IFACE->min_tx_int = BFD_DEFAULT_MIN_TX_INT;
BFD_IFACE->idle_tx_int = BFD_DEFAULT_IDLE_TX_INT;
BFD_IFACE->multiplier = BFD_DEFAULT_MULTIPLIER;
reset_passwords();
};
bfd_iface_finish:
{
BFD_IFACE->passwords = get_passwords();
if (!BFD_IFACE->auth_type != !BFD_IFACE->passwords)
log(L_WARN "Authentication and password options should be used together");
if (BFD_IFACE->passwords)
{
struct password_item *pass;
WALK_LIST(pass, *BFD_IFACE->passwords)
{
if (pass->alg)
cf_error("Password algorithm option not available in BFD protocol");
pass->alg = bfd_auth_type_to_hash_alg[BFD_IFACE->auth_type];
}
}
};
bfd_iface_item:
INTERVAL expr_us { BFD_IFACE->min_rx_int = BFD_IFACE->min_tx_int = $2; }
| MIN RX INTERVAL expr_us { BFD_IFACE->min_rx_int = $4; }
| MIN TX INTERVAL expr_us { BFD_IFACE->min_tx_int = $4; }
| IDLE TX INTERVAL expr_us { BFD_IFACE->idle_tx_int = $4; }
| MULTIPLIER expr { BFD_IFACE->multiplier = $2; }
| PASSIVE bool { BFD_IFACE->passive = $2; }
| AUTHENTICATION bfd_auth_type { BFD_IFACE->auth_type = $2; }
| password_list {}
;
bfd_auth_type:
NONE { $$ = BFD_AUTH_NONE; }
| SIMPLE { $$ = BFD_AUTH_SIMPLE; }
| KEYED MD5 { $$ = BFD_AUTH_KEYED_MD5; }
| KEYED SHA1 { $$ = BFD_AUTH_KEYED_SHA1; }
| METICULOUS KEYED MD5 { $$ = BFD_AUTH_METICULOUS_KEYED_MD5; }
| METICULOUS KEYED SHA1 { $$ = BFD_AUTH_METICULOUS_KEYED_SHA1; }
;
bfd_iface_opts:
/* empty */
| bfd_iface_opts bfd_iface_item ';'
;
bfd_iface_opt_list:
/* empty */
| '{' bfd_iface_opts '}'
;
bfd_iface:
bfd_iface_start iface_patt_list_nopx bfd_iface_opt_list bfd_iface_finish;
bfd_multihop:
bfd_iface_start bfd_iface_opt_list bfd_iface_finish
{ BFD_CFG->multihop = BFD_IFACE; };
bfd_neigh_iface:
/* empty */ { $$ = NULL; }
| '%' SYM { $$ = if_get_by_name($2->name); }
| DEV text { $$ = if_get_by_name($2); }
;
bfd_neigh_local:
/* empty */ { $$ = IPA_NONE; }
| LOCAL ipa { $$ = $2; }
;
bfd_neigh_multihop:
/* empty */ { $$ = 0; }
| MULTIHOP bool { $$ = $2; }
;
bfd_neighbor: ipa bfd_neigh_iface bfd_neigh_local bfd_neigh_multihop
{
this_bfd_neighbor = cfg_allocz(sizeof(struct bfd_neighbor));
add_tail(&BFD_CFG->neigh_list, NODE this_bfd_neighbor);
BFD_NEIGHBOR->addr = $1;
BFD_NEIGHBOR->local = $3;
BFD_NEIGHBOR->iface = $2;
BFD_NEIGHBOR->multihop = $4;
if ($4 && $2)
cf_error("Neighbor cannot set both interface and multihop");
if ($4 && ipa_zero($3))
cf_error("Multihop neighbor requires specified local address");
};
CF_CLI_HELP(SHOW BFD, ..., [[Show information about BFD protocol]]);
CF_CLI(SHOW BFD SESSIONS, optsym, [<name>], [[Show information about BFD sessions]])
{ bfd_show_sessions(proto_get_named($4, &proto_bfd)); };
CF_CODE
CF_END
|
