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/*
* 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 */
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