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eb5d44eb | 1 | /* |
2 | * IS-IS Rout(e)ing protocol - isis_lsp.h | |
3 | * LSP processing | |
4 | * | |
5 | * Copyright (C) 2001,2002 Sampo Saaristo | |
6 | * Tampere University of Technology | |
7 | * Institute of Communications Engineering | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify it | |
10 | * under the terms of the GNU General Public Licenseas published by the Free | |
11 | * Software Foundation; either version 2 of the License, or (at your option) | |
12 | * any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful,but WITHOUT | |
15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
17 | * more details. | |
896014f4 DL |
18 | * |
19 | * You should have received a copy of the GNU General Public License along | |
20 | * with this program; see the file COPYING; if not, write to the Free Software | |
21 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
eb5d44eb | 22 | */ |
23 | ||
24 | #ifndef _ZEBRA_ISIS_LSP_H | |
25 | #define _ZEBRA_ISIS_LSP_H | |
26 | ||
eb5d44eb | 27 | /* Structure for isis_lsp, this structure will only support the fixed |
28 | * System ID (Currently 6) (atleast for now). In order to support more | |
29 | * We will have to split the header into two parts, and for readability | |
30 | * sake it should better be avoided */ | |
31 | struct isis_lsp | |
32 | { | |
f390d2c7 | 33 | struct isis_fixed_hdr *isis_header; /* normally equals pdu */ |
34 | struct isis_link_state_hdr *lsp_header; /* pdu + isis_header_len */ | |
35 | struct stream *pdu; /* full pdu lsp */ | |
36 | union | |
37 | { | |
eb5d44eb | 38 | struct list *frags; |
39 | struct isis_lsp *zero_lsp; | |
40 | } lspu; | |
3f045a08 | 41 | u_int32_t auth_tlv_offset; /* authentication TLV position in the pdu */ |
eb5d44eb | 42 | u_int32_t SRMflags[ISIS_MAX_CIRCUITS]; |
43 | u_int32_t SSNflags[ISIS_MAX_CIRCUITS]; | |
f390d2c7 | 44 | int level; /* L1 or L2? */ |
f390d2c7 | 45 | int scheduled; /* scheduled for sending */ |
eb5d44eb | 46 | time_t installed; |
47 | time_t last_generated; | |
eb5d44eb | 48 | int own_lsp; |
eb5d44eb | 49 | /* used for 60 second counting when rem_lifetime is zero */ |
f390d2c7 | 50 | int age_out; |
f1082d19 | 51 | struct isis_area *area; |
f390d2c7 | 52 | struct tlvs tlv_data; /* Simplifies TLV access */ |
eb5d44eb | 53 | }; |
54 | ||
55 | dict_t *lsp_db_init (void); | |
f390d2c7 | 56 | void lsp_db_destroy (dict_t * lspdb); |
eb5d44eb | 57 | int lsp_tick (struct thread *thread); |
58 | ||
3f045a08 JB |
59 | int lsp_generate (struct isis_area *area, int level); |
60 | int lsp_regenerate_schedule (struct isis_area *area, int level, | |
61 | int all_pseudo); | |
62 | int lsp_generate_pseudo (struct isis_circuit *circuit, int level); | |
63 | int lsp_regenerate_schedule_pseudo (struct isis_circuit *circuit, int level); | |
eb5d44eb | 64 | |
b20ccb3a CF |
65 | struct isis_lsp *lsp_new (struct isis_area *area, u_char * lsp_id, |
66 | u_int16_t rem_lifetime, | |
f390d2c7 | 67 | u_int32_t seq_num, u_int8_t lsp_bits, |
68 | u_int16_t checksum, int level); | |
69 | struct isis_lsp *lsp_new_from_stream_ptr (struct stream *stream, | |
70 | u_int16_t pdu_len, | |
71 | struct isis_lsp *lsp0, | |
3f045a08 JB |
72 | struct isis_area *area, |
73 | int level); | |
f390d2c7 | 74 | void lsp_insert (struct isis_lsp *lsp, dict_t * lspdb); |
75 | struct isis_lsp *lsp_search (u_char * id, dict_t * lspdb); | |
eb5d44eb | 76 | |
3f045a08 | 77 | void lsp_build_list (u_char * start_id, u_char * stop_id, u_char num_lsps, |
f390d2c7 | 78 | struct list *list, dict_t * lspdb); |
79 | void lsp_build_list_nonzero_ht (u_char * start_id, u_char * stop_id, | |
80 | struct list *list, dict_t * lspdb); | |
3f045a08 JB |
81 | void lsp_build_list_ssn (struct isis_circuit *circuit, u_char num_lsps, |
82 | struct list *list, dict_t * lspdb); | |
eb5d44eb | 83 | |
f390d2c7 | 84 | void lsp_search_and_destroy (u_char * id, dict_t * lspdb); |
3f045a08 | 85 | void lsp_purge_pseudo (u_char * id, struct isis_circuit *circuit, int level); |
17baea9c CF |
86 | void lsp_purge_non_exist (int level, |
87 | struct isis_link_state_hdr *lsp_hdr, | |
f390d2c7 | 88 | struct isis_area *area); |
eb5d44eb | 89 | |
90 | #define LSP_EQUAL 1 | |
91 | #define LSP_NEWER 2 | |
92 | #define LSP_OLDER 3 | |
93 | ||
c83dcd3f | 94 | #define LSP_PSEUDO_ID(I) ((I)[ISIS_SYS_ID_LEN]) |
95 | #define LSP_FRAGMENT(I) ((I)[ISIS_SYS_ID_LEN + 1]) | |
eb5d44eb | 96 | #define OWNLSPID(I) \ |
97 | memcpy ((I), isis->sysid, ISIS_SYS_ID_LEN);\ | |
98 | (I)[ISIS_SYS_ID_LEN] = 0;\ | |
99 | (I)[ISIS_SYS_ID_LEN + 1] = 0 | |
f390d2c7 | 100 | int lsp_id_cmp (u_char * id1, u_char * id2); |
101 | int lsp_compare (char *areatag, struct isis_lsp *lsp, u_int32_t seq_num, | |
102 | u_int16_t checksum, u_int16_t rem_lifetime); | |
3f045a08 JB |
103 | void lsp_update (struct isis_lsp *lsp, struct stream *stream, |
104 | struct isis_area *area, int level); | |
eb5d44eb | 105 | void lsp_inc_seqnum (struct isis_lsp *lsp, u_int32_t seq_num); |
3f045a08 JB |
106 | void lsp_print (struct isis_lsp *lsp, struct vty *vty, char dynhost); |
107 | void lsp_print_detail (struct isis_lsp *lsp, struct vty *vty, char dynhost); | |
f390d2c7 | 108 | int lsp_print_all (struct vty *vty, dict_t * lspdb, char detail, |
109 | char dynhost); | |
1cd80845 | 110 | const char *lsp_bits2string (u_char *); |
eb5d44eb | 111 | |
3f045a08 JB |
112 | /* sets SRMflags for all active circuits of an lsp */ |
113 | void lsp_set_all_srmflags (struct isis_lsp *lsp); | |
114 | ||
eb5d44eb | 115 | #endif /* ISIS_LSP */ |