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1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * IS-IS Rout(e)ing protocol - isis_lsp.h
6 * Copyright (C) 2001,2002 Sampo Saaristo
7 * Tampere University of Technology
8 * Institute of Communications Engineering
11 #ifndef _ZEBRA_ISIS_LSP_H
12 #define _ZEBRA_ISIS_LSP_H
14 #include "lib/typesafe.h"
15 #include "isisd/isis_pdu.h"
17 PREDECL_RBTREE_UNIQ(lspdb
);
20 /* Structure for isis_lsp, this structure will only support the fixed
21 * System ID (Currently 6) (atleast for now). In order to support more
22 * We will have to split the header into two parts, and for readability
23 * sake it should better be avoided */
25 struct lspdb_item dbe
;
27 struct isis_lsp_hdr hdr
;
28 struct stream
*pdu
; /* full pdu lsp */
31 struct isis_lsp
*zero_lsp
;
33 uint32_t SSNflags
[ISIS_MAX_CIRCUITS
];
34 int level
; /* L1 or L2? */
35 int scheduled
; /* scheduled for sending */
37 time_t last_generated
;
39 /* used for 60 second counting when rem_lifetime is zero */
41 struct isis_area
*area
;
42 struct isis_tlvs
*tlvs
;
45 struct list
*flooding_neighbors
[TX_LSP_CIRCUIT_SCOPED
+ 1];
46 char *flooding_interface
;
47 bool flooding_circuit_scoped
;
50 extern int lspdb_compare(const struct isis_lsp
*a
, const struct isis_lsp
*b
);
51 DECLARE_RBTREE_UNIQ(lspdb
, struct isis_lsp
, dbe
, lspdb_compare
);
53 void lsp_db_init(struct lspdb_head
*head
);
54 void lsp_db_fini(struct lspdb_head
*head
);
55 void lsp_tick(struct event
*thread
);
56 void set_overload_on_start_timer(struct event
*thread
);
58 int lsp_generate(struct isis_area
*area
, int level
);
59 #define lsp_regenerate_schedule(area, level, all_pseudo) \
60 _lsp_regenerate_schedule((area), (level), (all_pseudo), true, \
61 __func__, __FILE__, __LINE__)
62 int _lsp_regenerate_schedule(struct isis_area
*area
, int level
,
63 int all_pseudo
, bool postpone
,
64 const char *func
, const char *file
, int line
);
65 int lsp_generate_pseudo(struct isis_circuit
*circuit
, int level
);
66 int lsp_regenerate_schedule_pseudo(struct isis_circuit
*circuit
, int level
);
68 bool isis_level2_adj_up(struct isis_area
*area
);
70 struct isis_lsp
*lsp_new(struct isis_area
*area
, uint8_t *lsp_id
,
71 uint16_t rem_lifetime
, uint32_t seq_num
,
72 uint8_t lsp_bits
, uint16_t checksum
,
73 struct isis_lsp
*lsp0
, int level
);
74 struct isis_lsp
*lsp_new_from_recv(struct isis_lsp_hdr
*hdr
,
75 struct isis_tlvs
*tlvs
,
76 struct stream
*stream
, struct isis_lsp
*lsp0
,
77 struct isis_area
*area
, int level
);
78 void lsp_insert(struct lspdb_head
*head
, struct isis_lsp
*lsp
);
79 struct isis_lsp
*lsp_search(struct lspdb_head
*head
, const uint8_t *id
);
81 void lsp_build_list(struct lspdb_head
*head
, const uint8_t *start_id
,
82 const uint8_t *stop_id
, uint8_t num_lsps
,
84 void lsp_build_list_nonzero_ht(struct lspdb_head
*head
,
85 const uint8_t *start_id
,
86 const uint8_t *stop_id
, struct list
*list
);
87 void lsp_search_and_destroy(struct lspdb_head
*head
, const uint8_t *id
);
88 void lsp_purge_pseudo(uint8_t *id
, struct isis_circuit
*circuit
, int level
);
89 void lsp_purge_non_exist(int level
, struct isis_lsp_hdr
*hdr
,
90 struct isis_area
*area
);
96 #define LSP_PSEUDO_ID(I) ((I)[ISIS_SYS_ID_LEN])
97 #define LSP_FRAGMENT(I) ((I)[ISIS_SYS_ID_LEN + 1])
99 memcpy((I), isis->sysid, ISIS_SYS_ID_LEN); \
100 (I)[ISIS_SYS_ID_LEN] = 0; \
101 (I)[ISIS_SYS_ID_LEN + 1] = 0
102 int lsp_id_cmp(uint8_t *id1
, uint8_t *id2
);
103 int lsp_compare(char *areatag
, struct isis_lsp
*lsp
, uint32_t seqno
,
104 uint16_t checksum
, uint16_t rem_lifetime
);
105 void lsp_update(struct isis_lsp
*lsp
, struct isis_lsp_hdr
*hdr
,
106 struct isis_tlvs
*tlvs
, struct stream
*stream
,
107 struct isis_area
*area
, int level
, bool confusion
);
108 void lsp_inc_seqno(struct isis_lsp
*lsp
, uint32_t seqno
);
109 void lspid_print(uint8_t *lsp_id
, char *dest
, size_t dest_len
, char dynhost
,
110 char frag
, struct isis
*isis
);
111 void lsp_print_common(struct isis_lsp
*lsp
, struct vty
*vty
,
112 struct json_object
*json
, char dynhost
,
114 void lsp_print_vty(struct isis_lsp
*lsp
, struct vty
*vty
, char dynhost
,
116 void lsp_print_json(struct isis_lsp
*lsp
, struct json_object
*json
,
117 char dynhost
, struct isis
*isis
);
118 void lsp_print_detail(struct isis_lsp
*lsp
, struct vty
*vty
,
119 struct json_object
*json
, char dynhost
,
121 int lsp_print_all(struct vty
*vty
, struct json_object
*json
,
122 struct lspdb_head
*head
, char detail
, char dynhost
,
124 /* sets SRMflags for all active circuits of an lsp */
125 void lsp_set_all_srmflags(struct isis_lsp
*lsp
, bool set
);
127 #define LSP_ITER_CONTINUE 0
128 #define LSP_ITER_STOP -1
130 /* Callback used by isis_lsp_iterate_ip_reach() function. */
132 typedef int (*lsp_ip_reach_iter_cb
)(const struct prefix
*prefix
,
133 uint32_t metric
, bool external
,
134 struct isis_subtlvs
*subtlvs
, void *arg
);
136 /* Callback used by isis_lsp_iterate_is_reach() function. */
137 typedef int (*lsp_is_reach_iter_cb
)(const uint8_t *id
, uint32_t metric
,
139 struct isis_ext_subtlvs
*subtlvs
,
142 int isis_lsp_iterate_ip_reach(struct isis_lsp
*lsp
, int family
, uint16_t mtid
,
143 lsp_ip_reach_iter_cb cb
, void *arg
);
144 int isis_lsp_iterate_is_reach(struct isis_lsp
*lsp
, uint16_t mtid
,
145 lsp_is_reach_iter_cb cb
, void *arg
);
147 #define lsp_flood(lsp, circuit) \
148 _lsp_flood((lsp), (circuit), __func__, __FILE__, __LINE__)
149 void _lsp_flood(struct isis_lsp
*lsp
, struct isis_circuit
*circuit
,
150 const char *func
, const char *file
, int line
);
153 #endif /* ISIS_LSP */