Annotation of embedaddon/quagga/isisd/isis_lsp.h, revision 1.1.1.2
1.1 misho 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.
18:
19: * You should have received a copy of the GNU General Public License along
20: * with this program; if not, write to the Free Software Foundation, Inc.,
21: * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
22: */
23:
24: #ifndef _ZEBRA_ISIS_LSP_H
25: #define _ZEBRA_ISIS_LSP_H
26:
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: {
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: {
38: struct list *frags;
39: struct isis_lsp *zero_lsp;
40: } lspu;
1.1.1.2 ! misho 41: u_int32_t auth_tlv_offset; /* authentication TLV position in the pdu */
1.1 misho 42: u_int32_t SRMflags[ISIS_MAX_CIRCUITS];
43: u_int32_t SSNflags[ISIS_MAX_CIRCUITS];
44: int level; /* L1 or L2? */
45: int scheduled; /* scheduled for sending */
46: time_t installed;
47: time_t last_generated;
48: int own_lsp;
49: #ifdef TOPOLOGY_GENERATE
50: int from_topology;
51: struct thread *t_lsp_top_ref;
52: #endif
53: /* used for 60 second counting when rem_lifetime is zero */
54: int age_out;
55: struct isis_area *area;
56: struct tlvs tlv_data; /* Simplifies TLV access */
57: };
58:
59: dict_t *lsp_db_init (void);
60: void lsp_db_destroy (dict_t * lspdb);
61: int lsp_tick (struct thread *thread);
62:
1.1.1.2 ! misho 63: int lsp_generate (struct isis_area *area, int level);
! 64: int lsp_regenerate_schedule (struct isis_area *area, int level,
! 65: int all_pseudo);
! 66: int lsp_generate_pseudo (struct isis_circuit *circuit, int level);
! 67: int lsp_regenerate_schedule_pseudo (struct isis_circuit *circuit, int level);
! 68:
1.1 misho 69: struct isis_lsp *lsp_new (u_char * lsp_id, u_int16_t rem_lifetime,
70: u_int32_t seq_num, u_int8_t lsp_bits,
71: u_int16_t checksum, int level);
72: struct isis_lsp *lsp_new_from_stream_ptr (struct stream *stream,
73: u_int16_t pdu_len,
74: struct isis_lsp *lsp0,
1.1.1.2 ! misho 75: struct isis_area *area,
! 76: int level);
1.1 misho 77: void lsp_insert (struct isis_lsp *lsp, dict_t * lspdb);
78: struct isis_lsp *lsp_search (u_char * id, dict_t * lspdb);
79:
1.1.1.2 ! misho 80: void lsp_build_list (u_char * start_id, u_char * stop_id, u_char num_lsps,
1.1 misho 81: struct list *list, dict_t * lspdb);
82: void lsp_build_list_nonzero_ht (u_char * start_id, u_char * stop_id,
83: struct list *list, dict_t * lspdb);
1.1.1.2 ! misho 84: void lsp_build_list_ssn (struct isis_circuit *circuit, u_char num_lsps,
! 85: struct list *list, dict_t * lspdb);
1.1 misho 86:
87: void lsp_search_and_destroy (u_char * id, dict_t * lspdb);
1.1.1.2 ! misho 88: void lsp_purge_pseudo (u_char * id, struct isis_circuit *circuit, int level);
1.1 misho 89: void lsp_purge_non_exist (struct isis_link_state_hdr *lsp_hdr,
90: struct isis_area *area);
91:
92: #define LSP_EQUAL 1
93: #define LSP_NEWER 2
94: #define LSP_OLDER 3
95:
96: #define LSP_PSEUDO_ID(I) ((I)[ISIS_SYS_ID_LEN])
97: #define LSP_FRAGMENT(I) ((I)[ISIS_SYS_ID_LEN + 1])
98: #define OWNLSPID(I) \
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 (u_char * id1, u_char * id2);
103: int lsp_compare (char *areatag, struct isis_lsp *lsp, u_int32_t seq_num,
104: u_int16_t checksum, u_int16_t rem_lifetime);
1.1.1.2 ! misho 105: void lsp_update (struct isis_lsp *lsp, struct stream *stream,
! 106: struct isis_area *area, int level);
1.1 misho 107: void lsp_inc_seqnum (struct isis_lsp *lsp, u_int32_t seq_num);
1.1.1.2 ! misho 108: void lsp_print (struct isis_lsp *lsp, struct vty *vty, char dynhost);
! 109: void lsp_print_detail (struct isis_lsp *lsp, struct vty *vty, char dynhost);
1.1 misho 110: int lsp_print_all (struct vty *vty, dict_t * lspdb, char detail,
111: char dynhost);
112: const char *lsp_bits2string (u_char *);
113:
1.1.1.2 ! misho 114: /* sets SRMflags for all active circuits of an lsp */
! 115: void lsp_set_all_srmflags (struct isis_lsp *lsp);
! 116:
1.1 misho 117: #ifdef TOPOLOGY_GENERATE
118: void generate_topology_lsps (struct isis_area *area);
119: void remove_topology_lsps (struct isis_area *area);
120: void build_topology_lsp_data (struct isis_lsp *lsp,
121: struct isis_area *area, int lsp_top_num);
122: #endif /* TOPOLOGY_GENERATE */
123:
124: #endif /* ISIS_LSP */
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