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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/*
* IS-IS Rout(e)ing protocol - isis_circuit.h
*
* Copyright (C) 2001,2002 Sampo Saaristo
* Tampere University of Technology
* Institute of Communications Engineering
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public Licenseas published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; see the file COPYING; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef ISIS_CIRCUIT_H
#define ISIS_CIRCUIT_H
#include "vty.h"
#include "if.h"
#include "qobj.h"
#include "prefix.h"
#include "ferr.h"
#include "isis_constants.h"
#include "isis_common.h"
#include "isis_csm.h"
DECLARE_HOOK(isis_if_new_hook, (struct interface *ifp), (ifp));
struct isis_lsp;
struct password {
struct password *next;
int len;
uint8_t *pass;
};
struct metric {
uint8_t metric_default;
uint8_t metric_error;
uint8_t metric_expense;
uint8_t metric_delay;
};
struct isis_bcast_info {
uint8_t snpa[ETH_ALEN]; /* SNPA of this circuit */
char run_dr_elect[ISIS_LEVELS]; /* Should we run dr election ? */
struct thread *t_run_dr[ISIS_LEVELS]; /* DR election thread */
struct thread *t_send_lan_hello[ISIS_LEVELS]; /* send LAN IIHs in this
thread */
struct list *adjdb[ISIS_LEVELS]; /* adjacency dbs */
struct list *lan_neighs[ISIS_LEVELS]; /* list of lx neigh snpa */
char is_dr[ISIS_LEVELS]; /* Are we level x DR ? */
uint8_t l1_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-1 DR */
uint8_t l2_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-2 DR */
struct thread *t_refresh_pseudo_lsp[ISIS_LEVELS]; /* refresh pseudo-node
LSPs */
};
struct isis_p2p_info {
struct isis_adjacency *neighbor;
struct thread *t_send_p2p_hello; /* send P2P IIHs in this thread */
};
struct bfd_info;
struct isis_circuit_arg {
int level;
struct isis_circuit *circuit;
};
struct isis_circuit {
enum isis_circuit_state state;
uint8_t circuit_id; /* l1/l2 bcast CircuitID */
time_t last_uptime;
struct isis *isis;
struct isis_area *area; /* back pointer to the area */
struct interface *interface; /* interface info from z */
int fd; /* IS-IS l1/2 socket */
int sap_length; /* SAP length for DLPI */
struct nlpids nlpids;
/*
* Threads
*/
struct thread *t_read;
struct thread *t_send_csnp[ISIS_LEVELS];
struct thread *t_send_psnp[ISIS_LEVELS];
struct isis_tx_queue *tx_queue;
struct isis_circuit_arg
level_arg[ISIS_LEVELS]; /* used as argument for threads */
/* there is no real point in two streams, just for programming kicker */
int (*rx)(struct isis_circuit *circuit, uint8_t *ssnpa);
struct stream *rcv_stream; /* Stream for receiving */
int (*tx)(struct isis_circuit *circuit, int level);
struct stream *snd_stream; /* Stream for sending */
int idx; /* idx in S[RM|SN] flags */
#define CIRCUIT_T_UNKNOWN 0
#define CIRCUIT_T_BROADCAST 1
#define CIRCUIT_T_P2P 2
#define CIRCUIT_T_LOOPBACK 3
int circ_type; /* type of the physical interface */
int circ_type_config; /* config type of the physical interface */
union {
struct isis_bcast_info bc;
struct isis_p2p_info p2p;
} u;
uint8_t priority[ISIS_LEVELS]; /* l1/2 IS configured priority */
int pad_hellos; /* add padding to Hello PDUs ? */
char ext_domain; /* externalDomain (boolean) */
int lsp_regenerate_pending[ISIS_LEVELS];
uint64_t lsp_error_counter;
/*
* Configurables
*/
struct isis_passwd passwd; /* Circuit rx/tx password */
int is_type; /* circuit is type == level of circuit
* differentiated from circuit type (media) */
uint32_t hello_interval[ISIS_LEVELS]; /* hello-interval in seconds */
uint16_t hello_multiplier[ISIS_LEVELS]; /* hello-multiplier */
uint16_t csnp_interval[ISIS_LEVELS]; /* csnp-interval in seconds */
uint16_t psnp_interval[ISIS_LEVELS]; /* psnp-interval in seconds */
uint8_t metric[ISIS_LEVELS];
uint32_t te_metric[ISIS_LEVELS];
struct isis_ext_subtlvs *ext; /* Extended parameters (TE + Adj SID */
int ip_router; /* Route IP ? */
int is_passive; /* Is Passive ? */
struct list *mt_settings; /* IS-IS MT Settings */
struct list *ip_addrs; /* our IP addresses */
int ipv6_router; /* Route IPv6 ? */
struct list *ipv6_link; /* our link local IPv6 addresses */
struct list *ipv6_non_link; /* our non-link local IPv6 addresses */
uint16_t upadjcount[ISIS_LEVELS];
#define ISIS_CIRCUIT_FLAPPED_AFTER_SPF 0x01
uint8_t flags;
bool disable_threeway_adj;
struct bfd_info *bfd_info;
struct ldp_sync_info *ldp_sync_info;
bool lfa_protection[ISIS_LEVELS];
bool rlfa_protection[ISIS_LEVELS];
uint32_t rlfa_max_metric[ISIS_LEVELS];
struct hash *lfa_excluded_ifaces[ISIS_LEVELS];
bool tilfa_protection[ISIS_LEVELS];
bool tilfa_node_protection[ISIS_LEVELS];
/*
* Counters as in 10589--11.2.5.9
*/
uint32_t adj_state_changes; /* changesInAdjacencyState */
uint32_t init_failures; /* intialisationFailures */
uint32_t ctrl_pdus_rxed; /* controlPDUsReceived */
uint32_t ctrl_pdus_txed; /* controlPDUsSent */
uint32_t desig_changes[ISIS_LEVELS]; /* lanLxDesignatedIntermediateSystemChanges
*/
uint32_t rej_adjacencies; /* rejectedAdjacencies */
/*
* Counters as in ietf-isis@2019-09-09.yang
*/
uint32_t id_len_mismatches; /* id-len-mismatch */
uint32_t max_area_addr_mismatches; /* max-area-addresses-mismatch */
uint32_t auth_type_failures; /*authentication-type-fails */
uint32_t auth_failures; /* authentication-fails */
uint32_t snmp_id; /* Circuit id in snmp */
uint32_t snmp_adj_idx_gen; /* Create unique id for adjacency on creation
*/
struct list *snmp_adj_list; /* List in id order */
QOBJ_FIELDS;
};
DECLARE_QOBJ_TYPE(isis_circuit);
void isis_circuit_init(void);
struct isis_circuit *isis_circuit_new(struct isis *isis);
void isis_circuit_del(struct isis_circuit *circuit);
struct isis_circuit *circuit_lookup_by_ifp(struct interface *ifp,
struct list *list);
struct isis_circuit *circuit_scan_by_ifp(struct interface *ifp);
void isis_circuit_configure(struct isis_circuit *circuit,
struct isis_area *area);
void isis_circuit_deconfigure(struct isis_circuit *circuit,
struct isis_area *area);
void isis_circuit_if_add(struct isis_circuit *circuit, struct interface *ifp);
void isis_circuit_if_del(struct isis_circuit *circuit, struct interface *ifp);
void isis_circuit_if_bind(struct isis_circuit *circuit, struct interface *ifp);
void isis_circuit_if_unbind(struct isis_circuit *circuit,
struct interface *ifp);
void isis_circuit_add_addr(struct isis_circuit *circuit,
struct connected *conn);
void isis_circuit_del_addr(struct isis_circuit *circuit,
struct connected *conn);
void isis_circuit_prepare(struct isis_circuit *circuit);
int isis_circuit_up(struct isis_circuit *circuit);
void isis_circuit_down(struct isis_circuit *);
void circuit_update_nlpids(struct isis_circuit *circuit);
void isis_circuit_print_vty(struct isis_circuit *circuit, struct vty *vty,
char detail);
size_t isis_circuit_pdu_size(struct isis_circuit *circuit);
void isis_circuit_stream(struct isis_circuit *circuit, struct stream **stream);
struct isis_circuit *isis_circuit_create(struct isis_area *area,
struct interface *ifp);
void isis_circuit_af_set(struct isis_circuit *circuit, bool ip_router,
bool ipv6_router);
ferr_r isis_circuit_passive_set(struct isis_circuit *circuit, bool passive);
void isis_circuit_is_type_set(struct isis_circuit *circuit, int is_type);
void isis_circuit_circ_type_set(struct isis_circuit *circuit, int circ_type);
ferr_r isis_circuit_metric_set(struct isis_circuit *circuit, int level,
int metric);
ferr_r isis_circuit_passwd_unset(struct isis_circuit *circuit);
ferr_r isis_circuit_passwd_set(struct isis_circuit *circuit,
uint8_t passwd_type, const char *passwd);
ferr_r isis_circuit_passwd_cleartext_set(struct isis_circuit *circuit,
const char *passwd);
ferr_r isis_circuit_passwd_hmac_md5_set(struct isis_circuit *circuit,
const char *passwd);
int isis_circuit_mt_enabled_set(struct isis_circuit *circuit, uint16_t mtid,
bool enabled);
#ifdef FABRICD
DECLARE_HOOK(isis_circuit_config_write,
(struct isis_circuit *circuit, struct vty *vty),
(circuit, vty));
#endif
DECLARE_HOOK(isis_circuit_add_addr_hook, (struct isis_circuit *circuit),
(circuit));
#endif /* _ZEBRA_ISIS_CIRCUIT_H */
|
