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Diffstat (limited to 'isisd/isis_lsp.h')
| -rw-r--r-- | isisd/isis_lsp.h | 132 |
1 files changed, 132 insertions, 0 deletions
diff --git a/isisd/isis_lsp.h b/isisd/isis_lsp.h new file mode 100644 index 000000000..71a75089a --- /dev/null +++ b/isisd/isis_lsp.h @@ -0,0 +1,132 @@ +/* + * IS-IS Rout(e)ing protocol - isis_lsp.h + * LSP processing + * + * 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; if not, write to the Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef _ZEBRA_ISIS_LSP_H +#define _ZEBRA_ISIS_LSP_H + +/* The grand plan is to support 1024 circuits so we have 32*32 bit flags + * the support will be achived using the newest drafts */ +#define ISIS_MAX_CIRCUITS 32 /* = 1024 */ /*FIXME:defined in flags.h as well*/ + +/* Structure for isis_lsp, this structure will only support the fixed + * System ID (Currently 6) (atleast for now). In order to support more + * We will have to split the header into two parts, and for readability + * sake it should better be avoided */ +struct isis_lsp +{ + struct isis_fixed_hdr *isis_header; /* normally equals pdu */ + struct isis_link_state_hdr *lsp_header; /* pdu + isis_header_len */ + struct stream *pdu; /* full pdu lsp */ + union { + struct list *frags; + struct isis_lsp *zero_lsp; + } lspu; + u_int32_t SRMflags[ISIS_MAX_CIRCUITS]; + u_int32_t SSNflags[ISIS_MAX_CIRCUITS]; + u_int32_t rexmit_queue[ISIS_MAX_CIRCUITS]; + int level; /* L1 or L2? */ + int purged; /* have purged this one */ + int scheduled; /* scheduled for sending */ + time_t installed; + time_t last_generated; + time_t last_sent; + int own_lsp; +#ifdef TOPOLOGY_GENERATE + int from_topology; + struct thread *t_lsp_top_ref; +#endif + /* used for 60 second counting when rem_lifetime is zero */ + int age_out; + struct isis_adjacency *adj; + struct tlvs tlv_data; /* Simplifies TLV access */ +}; + +dict_t *lsp_db_init (void); +void lsp_db_destroy (dict_t *lspdb); +int lsp_tick (struct thread *thread); + +int lsp_l1_generate (struct isis_area *area); +int lsp_l2_generate (struct isis_area *area); +int lsp_refresh_l1 (struct thread *thread); +int lsp_refresh_l2 (struct thread *thread); +int lsp_regenerate_schedule (struct isis_area *area); + +int lsp_l1_pseudo_generate (struct isis_circuit *circuit); +int lsp_l2_pseudo_generate (struct isis_circuit *circuit); +int lsp_l1_refresh_pseudo (struct thread *thread); +int lsp_l2_refresh_pseudo (struct thread *thread); +int isis_lsp_authinfo_check (struct stream *stream, struct isis_area *area, + int pdulen, struct isis_passwd *passwd); +struct isis_lsp *lsp_new (u_char *lsp_id, u_int16_t rem_lifetime, + u_int32_t seq_num, u_int8_t lsp_bits, + u_int16_t checksum, int level); +struct isis_lsp *lsp_new_from_stream_ptr (struct stream *stream, + u_int16_t pdu_len, + struct isis_lsp *lsp0, + struct isis_area *area); +void lsp_insert (struct isis_lsp *lsp, dict_t *lspdb); +struct isis_lsp *lsp_search (u_char *id, dict_t *lspdb); + +void lsp_build_list (u_char *start_id, u_char *stop_id, + struct list *list, dict_t *lspdb); +void lsp_build_list_nonzero_ht (u_char *start_id, u_char *stop_id, + struct list *list, dict_t *lspdb); +void lsp_build_list_ssn (struct isis_circuit *circuit, struct list *list, + dict_t *lspdb); + +void lsp_search_and_destroy (u_char *id, dict_t *lspdb); +void lsp_purge_dr (u_char *id, struct isis_circuit *circuit, int level); +void lsp_purge_non_exist (struct isis_link_state_hdr *lsp_hdr, + struct isis_area *area); + +#define LSP_EQUAL 1 +#define LSP_NEWER 2 +#define LSP_OLDER 3 + +#define LSP_PSEUDO_ID(I) ((u_char)(I)[ISIS_SYS_ID_LEN]) +#define LSP_FRAGMENT(I) ((u_char)(I)[ISIS_SYS_ID_LEN + 1]) +#define OWNLSPID(I) \ + memcpy ((I), isis->sysid, ISIS_SYS_ID_LEN);\ + (I)[ISIS_SYS_ID_LEN] = 0;\ + (I)[ISIS_SYS_ID_LEN + 1] = 0 +int lsp_id_cmp (u_char *id1, u_char *id2); +int lsp_compare (char *areatag, struct isis_lsp *lsp, u_int32_t seq_num, + u_int16_t checksum, u_int16_t rem_lifetime); +void lsp_update (struct isis_lsp *lsp, struct isis_link_state_hdr *lsp_hdr, + struct stream *stream, struct isis_area *area); +void lsp_inc_seqnum (struct isis_lsp *lsp, u_int32_t seq_num); +int lsp_print_all (struct vty *vty, dict_t *lspdb, char detail, char dynhost); +char *lsp_bits2string (u_char *); + +/* staticly assigned vars for printing purposes */ +char lsp_bits_string[200]; /* FIXME: enough ? */ + +#ifdef TOPOLOGY_GENERATE +void generate_topology_lsps (struct isis_area *area); +void remove_topology_lsps (struct isis_area *area); +void build_topology_lsp_data (struct isis_lsp *lsp, + struct isis_area *area, int lsp_top_num); +#endif /* TOPOLOGY_GENERATE */ + +#endif /* ISIS_LSP */ + |