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Diffstat (limited to 'isisd/isis_lsp.h')
| -rw-r--r-- | isisd/isis_lsp.h | 153 |
1 files changed, 153 insertions, 0 deletions
diff --git a/isisd/isis_lsp.h b/isisd/isis_lsp.h new file mode 100644 index 0000000..3839a95 --- /dev/null +++ b/isisd/isis_lsp.h @@ -0,0 +1,153 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * 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 + */ + +#ifndef _ZEBRA_ISIS_LSP_H +#define _ZEBRA_ISIS_LSP_H + +#include "lib/typesafe.h" +#include "isisd/isis_pdu.h" + +PREDECL_RBTREE_UNIQ(lspdb); + +struct isis; +/* 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 lspdb_item dbe; + + struct isis_lsp_hdr hdr; + struct stream *pdu; /* full pdu lsp */ + union { + struct list *frags; + struct isis_lsp *zero_lsp; + } lspu; + uint32_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; + /* used for 60 second counting when rem_lifetime is zero */ + int age_out; + struct isis_area *area; + struct isis_tlvs *tlvs; + + time_t flooding_time; + struct list *flooding_neighbors[TX_LSP_CIRCUIT_SCOPED + 1]; + char *flooding_interface; + bool flooding_circuit_scoped; +}; + +extern int lspdb_compare(const struct isis_lsp *a, const struct isis_lsp *b); +DECLARE_RBTREE_UNIQ(lspdb, struct isis_lsp, dbe, lspdb_compare); + +void lsp_db_init(struct lspdb_head *head); +void lsp_db_fini(struct lspdb_head *head); +void lsp_tick(struct event *thread); +void set_overload_on_start_timer(struct event *thread); + +int lsp_generate(struct isis_area *area, int level); +#define lsp_regenerate_schedule(area, level, all_pseudo) \ + _lsp_regenerate_schedule((area), (level), (all_pseudo), true, \ + __func__, __FILE__, __LINE__) +int _lsp_regenerate_schedule(struct isis_area *area, int level, + int all_pseudo, bool postpone, + const char *func, const char *file, int line); +int lsp_generate_pseudo(struct isis_circuit *circuit, int level); +int lsp_regenerate_schedule_pseudo(struct isis_circuit *circuit, int level); + +bool isis_level2_adj_up(struct isis_area *area); + +struct isis_lsp *lsp_new(struct isis_area *area, uint8_t *lsp_id, + uint16_t rem_lifetime, uint32_t seq_num, + uint8_t lsp_bits, uint16_t checksum, + struct isis_lsp *lsp0, int level); +struct isis_lsp *lsp_new_from_recv(struct isis_lsp_hdr *hdr, + struct isis_tlvs *tlvs, + struct stream *stream, struct isis_lsp *lsp0, + struct isis_area *area, int level); +void lsp_insert(struct lspdb_head *head, struct isis_lsp *lsp); +struct isis_lsp *lsp_search(struct lspdb_head *head, const uint8_t *id); + +void lsp_build_list(struct lspdb_head *head, const uint8_t *start_id, + const uint8_t *stop_id, uint8_t num_lsps, + struct list *list); +void lsp_build_list_nonzero_ht(struct lspdb_head *head, + const uint8_t *start_id, + const uint8_t *stop_id, struct list *list); +void lsp_search_and_destroy(struct lspdb_head *head, const uint8_t *id); +void lsp_purge_pseudo(uint8_t *id, struct isis_circuit *circuit, int level); +void lsp_purge_non_exist(int level, struct isis_lsp_hdr *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(uint8_t *id1, uint8_t *id2); +int lsp_compare(char *areatag, struct isis_lsp *lsp, uint32_t seqno, + uint16_t checksum, uint16_t rem_lifetime); +void lsp_update(struct isis_lsp *lsp, struct isis_lsp_hdr *hdr, + struct isis_tlvs *tlvs, struct stream *stream, + struct isis_area *area, int level, bool confusion); +void lsp_inc_seqno(struct isis_lsp *lsp, uint32_t seqno); +void lspid_print(uint8_t *lsp_id, char *dest, size_t dest_len, char dynhost, + char frag, struct isis *isis); +void lsp_print_common(struct isis_lsp *lsp, struct vty *vty, + struct json_object *json, char dynhost, + struct isis *isis); +void lsp_print_vty(struct isis_lsp *lsp, struct vty *vty, char dynhost, + struct isis *isis); +void lsp_print_json(struct isis_lsp *lsp, struct json_object *json, + char dynhost, struct isis *isis); +void lsp_print_detail(struct isis_lsp *lsp, struct vty *vty, + struct json_object *json, char dynhost, + struct isis *isis); +int lsp_print_all(struct vty *vty, struct json_object *json, + struct lspdb_head *head, char detail, char dynhost, + struct isis *isis); +/* sets SRMflags for all active circuits of an lsp */ +void lsp_set_all_srmflags(struct isis_lsp *lsp, bool set); + +#define LSP_ITER_CONTINUE 0 +#define LSP_ITER_STOP -1 + +/* Callback used by isis_lsp_iterate_ip_reach() function. */ +struct isis_subtlvs; +typedef int (*lsp_ip_reach_iter_cb)(const struct prefix *prefix, + uint32_t metric, bool external, + struct isis_subtlvs *subtlvs, void *arg); + +/* Callback used by isis_lsp_iterate_is_reach() function. */ +typedef int (*lsp_is_reach_iter_cb)(const uint8_t *id, uint32_t metric, + bool oldmetric, + struct isis_ext_subtlvs *subtlvs, + void *arg); + +int isis_lsp_iterate_ip_reach(struct isis_lsp *lsp, int family, uint16_t mtid, + lsp_ip_reach_iter_cb cb, void *arg); +int isis_lsp_iterate_is_reach(struct isis_lsp *lsp, uint16_t mtid, + lsp_is_reach_iter_cb cb, void *arg); + +#define lsp_flood(lsp, circuit) \ + _lsp_flood((lsp), (circuit), __func__, __FILE__, __LINE__) +void _lsp_flood(struct isis_lsp *lsp, struct isis_circuit *circuit, + const char *func, const char *file, int line); +void lsp_init(void); + +#endif /* ISIS_LSP */ |