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| author | Renato Westphal <renato@opensourcerouting.org> | 2020-08-20 21:27:56 -0300 |
|---|---|---|
| committer | Renato Westphal <renato@opensourcerouting.org> | 2020-08-26 20:16:19 -0300 |
| commit | 98a496368a8d1c5c2d1caf35142ecfae55cae615 (patch) | |
| tree | 30894938c61e7e73caa1894dc6ce12c4d1def6f9 /isisd/isis_lsp.h | |
| parent | 0af5e414d1b1a6a89aee261f3fea9e32310714ea (diff) | |
isisd: introduce two LSP iteration functions
Iterating over all IP or IS reachability information from a given
LSP isn't a trivial task. That information is scattered throughout
different TLV types, and which ones need to be used depend on
multiple variables (e.g. the SPF tree address family, MT-ID,
etc). This not to mention that an LSP might consist of multiple
fragments.
Introduce the following two LSP iteration function to facilitate
obtaining IP/IS reachability information from a given LSP:
* isis_lsp_iterate_ip_reach()
* isis_lsp_iterate_is_reach()
These functions will be used extensively by the upcoming TI-LFA
code.
Signed-off-by: Renato Westphal <renato@opensourcerouting.org>
Diffstat (limited to 'isisd/isis_lsp.h')
| -rw-r--r-- | isisd/isis_lsp.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/isisd/isis_lsp.h b/isisd/isis_lsp.h index 6cbea47496..0783036e49 100644 --- a/isisd/isis_lsp.h +++ b/isisd/isis_lsp.h @@ -127,6 +127,26 @@ int lsp_print_all(struct vty *vty, struct lspdb_head *head, char detail, /* 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, |