123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125 |
- /*
- * 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
- /* 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 auth_tlv_offset; /* authentication TLV position in the pdu */
- u_int32_t SRMflags[ISIS_MAX_CIRCUITS];
- u_int32_t SSNflags[ISIS_MAX_CIRCUITS];
- int level; /* L1 or L2? */
- int scheduled; /* scheduled for sending */
- time_t installed;
- time_t last_generated;
- 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_area *area;
- 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_generate (struct isis_area *area, int level);
- int lsp_regenerate_schedule (struct isis_area *area, int level,
- int all_pseudo);
- int lsp_generate_pseudo (struct isis_circuit *circuit, int level);
- int lsp_regenerate_schedule_pseudo (struct isis_circuit *circuit, int level);
- struct isis_lsp *lsp_new (struct isis_area *area, 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,
- int level);
- 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, u_char num_lsps,
- 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, u_char num_lsps,
- struct list *list, dict_t * lspdb);
- void lsp_search_and_destroy (u_char * id, dict_t * lspdb);
- void lsp_purge_pseudo (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) ((I)[ISIS_SYS_ID_LEN])
- #define LSP_FRAGMENT(I) ((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 stream *stream,
- struct isis_area *area, int level);
- void lsp_inc_seqnum (struct isis_lsp *lsp, u_int32_t seq_num);
- void lsp_print (struct isis_lsp *lsp, struct vty *vty, char dynhost);
- void lsp_print_detail (struct isis_lsp *lsp, struct vty *vty, char dynhost);
- int lsp_print_all (struct vty *vty, dict_t * lspdb, char detail,
- char dynhost);
- const char *lsp_bits2string (u_char *);
- /* sets SRMflags for all active circuits of an lsp */
- void lsp_set_all_srmflags (struct isis_lsp *lsp);
- #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 */
|