Annotation of embedaddon/quagga/isisd/isis_lsp.h, revision 1.1.1.1
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: /* The grand plan is to support 1024 circuits so we have 32*32 bit flags
28: * the support will be achived using the newest drafts */
29: #define ISIS_MAX_CIRCUITS 32 /* = 1024 - FIXME:defined in flags.h as well */
30:
31: /* Structure for isis_lsp, this structure will only support the fixed
32: * System ID (Currently 6) (atleast for now). In order to support more
33: * We will have to split the header into two parts, and for readability
34: * sake it should better be avoided */
35: struct isis_lsp
36: {
37: struct isis_fixed_hdr *isis_header; /* normally equals pdu */
38: struct isis_link_state_hdr *lsp_header; /* pdu + isis_header_len */
39: struct stream *pdu; /* full pdu lsp */
40: union
41: {
42: struct list *frags;
43: struct isis_lsp *zero_lsp;
44: } lspu;
45: u_int32_t SRMflags[ISIS_MAX_CIRCUITS];
46: u_int32_t SSNflags[ISIS_MAX_CIRCUITS];
47: u_int32_t rexmit_queue[ISIS_MAX_CIRCUITS];
48: int level; /* L1 or L2? */
49: int purged; /* have purged this one */
50: int scheduled; /* scheduled for sending */
51: time_t installed;
52: time_t last_generated;
53: time_t last_sent;
54: int own_lsp;
55: #ifdef TOPOLOGY_GENERATE
56: int from_topology;
57: struct thread *t_lsp_top_ref;
58: #endif
59: /* used for 60 second counting when rem_lifetime is zero */
60: int age_out;
61: struct isis_adjacency *adj;
62: /* FIXME: For now only topology LSP's use this. Is it helpful for others? */
63: struct isis_area *area;
64: struct tlvs tlv_data; /* Simplifies TLV access */
65: };
66:
67: dict_t *lsp_db_init (void);
68: void lsp_db_destroy (dict_t * lspdb);
69: int lsp_tick (struct thread *thread);
70:
71: int lsp_l1_generate (struct isis_area *area);
72: int lsp_l2_generate (struct isis_area *area);
73: int lsp_refresh_l1 (struct thread *thread);
74: int lsp_refresh_l2 (struct thread *thread);
75: int lsp_regenerate_schedule (struct isis_area *area);
76:
77: int lsp_l1_pseudo_generate (struct isis_circuit *circuit);
78: int lsp_l2_pseudo_generate (struct isis_circuit *circuit);
79: int lsp_l1_refresh_pseudo (struct thread *thread);
80: int lsp_l2_refresh_pseudo (struct thread *thread);
81: int isis_lsp_authinfo_check (struct stream *stream, struct isis_area *area,
82: int pdulen, struct isis_passwd *passwd);
83: struct isis_lsp *lsp_new (u_char * lsp_id, u_int16_t rem_lifetime,
84: u_int32_t seq_num, u_int8_t lsp_bits,
85: u_int16_t checksum, int level);
86: struct isis_lsp *lsp_new_from_stream_ptr (struct stream *stream,
87: u_int16_t pdu_len,
88: struct isis_lsp *lsp0,
89: struct isis_area *area);
90: void lsp_insert (struct isis_lsp *lsp, dict_t * lspdb);
91: struct isis_lsp *lsp_search (u_char * id, dict_t * lspdb);
92:
93: void lsp_build_list (u_char * start_id, u_char * stop_id,
94: struct list *list, dict_t * lspdb);
95: void lsp_build_list_nonzero_ht (u_char * start_id, u_char * stop_id,
96: struct list *list, dict_t * lspdb);
97: void lsp_build_list_ssn (struct isis_circuit *circuit, struct list *list,
98: dict_t * lspdb);
99:
100: void lsp_search_and_destroy (u_char * id, dict_t * lspdb);
101: void lsp_purge_dr (u_char * id, struct isis_circuit *circuit, int level);
102: void lsp_purge_non_exist (struct isis_link_state_hdr *lsp_hdr,
103: struct isis_area *area);
104:
105: #define LSP_EQUAL 1
106: #define LSP_NEWER 2
107: #define LSP_OLDER 3
108:
109: #define LSP_PSEUDO_ID(I) ((I)[ISIS_SYS_ID_LEN])
110: #define LSP_FRAGMENT(I) ((I)[ISIS_SYS_ID_LEN + 1])
111: #define OWNLSPID(I) \
112: memcpy ((I), isis->sysid, ISIS_SYS_ID_LEN);\
113: (I)[ISIS_SYS_ID_LEN] = 0;\
114: (I)[ISIS_SYS_ID_LEN + 1] = 0
115: int lsp_id_cmp (u_char * id1, u_char * id2);
116: int lsp_compare (char *areatag, struct isis_lsp *lsp, u_int32_t seq_num,
117: u_int16_t checksum, u_int16_t rem_lifetime);
118: void lsp_update (struct isis_lsp *lsp, struct isis_link_state_hdr *lsp_hdr,
119: struct stream *stream, struct isis_area *area, int level);
120: void lsp_inc_seqnum (struct isis_lsp *lsp, u_int32_t seq_num);
121: int lsp_print_all (struct vty *vty, dict_t * lspdb, char detail,
122: char dynhost);
123: const char *lsp_bits2string (u_char *);
124:
125: #ifdef TOPOLOGY_GENERATE
126: void generate_topology_lsps (struct isis_area *area);
127: void remove_topology_lsps (struct isis_area *area);
128: void build_topology_lsp_data (struct isis_lsp *lsp,
129: struct isis_area *area, int lsp_top_num);
130: #endif /* TOPOLOGY_GENERATE */
131:
132: #endif /* ISIS_LSP */
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