diff options
Diffstat (limited to 'zebra/zebra_srv6.c')
| -rw-r--r-- | zebra/zebra_srv6.c | 132 |
1 files changed, 125 insertions, 7 deletions
diff --git a/zebra/zebra_srv6.c b/zebra/zebra_srv6.c index bb872ef91c..dffc6ca091 100644 --- a/zebra/zebra_srv6.c +++ b/zebra/zebra_srv6.c @@ -90,6 +90,98 @@ static int zebra_srv6_cleanup(struct zserv *client) return 0; } +/* --- Zebra SRv6 SID format management functions --------------------------- */ + +void zebra_srv6_sid_format_register(struct zebra_srv6_sid_format *format) +{ + struct zebra_srv6 *srv6 = zebra_srv6_get_default(); + + /* Ensure that the format is registered only once */ + assert(!zebra_srv6_sid_format_lookup(format->name)); + + listnode_add(srv6->sid_formats, format); +} + +void zebra_srv6_sid_format_unregister(struct zebra_srv6_sid_format *format) +{ + struct zebra_srv6 *srv6 = zebra_srv6_get_default(); + + listnode_delete(srv6->sid_formats, format); +} + +struct zebra_srv6_sid_format *zebra_srv6_sid_format_lookup(const char *name) +{ + struct zebra_srv6 *srv6 = zebra_srv6_get_default(); + struct zebra_srv6_sid_format *format; + struct listnode *node; + + for (ALL_LIST_ELEMENTS_RO(srv6->sid_formats, node, format)) + if (!strncmp(name, format->name, sizeof(format->name))) + return format; + + return NULL; +} + +/* + * Helper function to create the SRv6 compressed format `usid-f3216`. + */ +static struct zebra_srv6_sid_format *create_srv6_sid_format_usid_f3216(void) +{ + struct zebra_srv6_sid_format *format = NULL; + + format = zebra_srv6_sid_format_alloc( + ZEBRA_SRV6_SID_FORMAT_USID_F3216_NAME); + + format->type = SRV6_SID_FORMAT_TYPE_USID; + + /* Define block/node/function length */ + format->block_len = ZEBRA_SRV6_SID_FORMAT_USID_F3216_BLOCK_LEN; + format->node_len = ZEBRA_SRV6_SID_FORMAT_USID_F3216_NODE_LEN; + format->function_len = ZEBRA_SRV6_SID_FORMAT_USID_F3216_FUNCTION_LEN; + format->argument_len = ZEBRA_SRV6_SID_FORMAT_USID_F3216_ARGUMENT_LEN; + + /* Define the ranges from which the SID function can be allocated */ + format->config.usid.lib_start = + ZEBRA_SRV6_SID_FORMAT_USID_F3216_LIB_START; + format->config.usid.elib_start = + ZEBRA_SRV6_SID_FORMAT_USID_F3216_ELIB_START; + format->config.usid.elib_end = ZEBRA_SRV6_SID_FORMAT_USID_F3216_ELIB_END; + format->config.usid.wlib_start = + ZEBRA_SRV6_SID_FORMAT_USID_F3216_WLIB_START; + format->config.usid.wlib_end = ZEBRA_SRV6_SID_FORMAT_USID_F3216_WLIB_END; + format->config.usid.ewlib_start = + ZEBRA_SRV6_SID_FORMAT_USID_F3216_EWLIB_START; + + return format; +} + +/* + * Helper function to create the SRv6 uncompressed format. + */ +static struct zebra_srv6_sid_format *create_srv6_sid_format_uncompressed(void) +{ + struct zebra_srv6_sid_format *format = NULL; + + format = zebra_srv6_sid_format_alloc( + ZEBRA_SRV6_SID_FORMAT_UNCOMPRESSED_F4024_NAME); + + format->type = ZEBRA_SRV6_SID_FORMAT_TYPE_UNCOMPRESSED; + + /* Define block/node/function length */ + format->block_len = ZEBRA_SRV6_SID_FORMAT_UNCOMPRESSED_F4024_BLOCK_LEN; + format->node_len = ZEBRA_SRV6_SID_FORMAT_UNCOMPRESSED_F4024_NODE_LEN; + format->function_len = + ZEBRA_SRV6_SID_FORMAT_UNCOMPRESSED_F4024_FUNCTION_LEN; + format->argument_len = + ZEBRA_SRV6_SID_FORMAT_UNCOMPRESSED_F4024_ARGUMENT_LEN; + + /* Define the ranges from which the SID function can be allocated */ + format->config.uncompressed.explicit_start = + ZEBRA_SRV6_SID_FORMAT_UNCOMPRESSED_F4024_EXPLICIT_RANGE_START; + + return format; +} + void zebra_srv6_locator_add(struct srv6_locator *locator) { struct zebra_srv6 *srv6 = zebra_srv6_get_default(); @@ -222,10 +314,24 @@ struct zebra_srv6 srv6; struct zebra_srv6 *zebra_srv6_get_default(void) { static bool first_execution = true; + struct zebra_srv6_sid_format *format_usidf3216; + struct zebra_srv6_sid_format *format_uncompressed; if (first_execution) { first_execution = false; srv6.locators = list_new(); + + /* Initialize list of SID formats */ + srv6.sid_formats = list_new(); + srv6.sid_formats->del = delete_zebra_srv6_sid_format; + + /* Create SID format `usid-f3216` */ + format_usidf3216 = create_srv6_sid_format_usid_f3216(); + zebra_srv6_sid_format_register(format_usidf3216); + + /* Create SID format `uncompressed` */ + format_uncompressed = create_srv6_sid_format_uncompressed(); + zebra_srv6_sid_format_register(format_uncompressed); } return &srv6; } @@ -430,18 +536,30 @@ void zebra_srv6_encap_src_addr_unset(void) void zebra_srv6_terminate(void) { struct srv6_locator *locator; + struct zebra_srv6_sid_format *format; - if (!srv6.locators) - return; + if (srv6.locators) { + while (listcount(srv6.locators)) { + locator = listnode_head(srv6.locators); - while (listcount(srv6.locators)) { - locator = listnode_head(srv6.locators); + listnode_delete(srv6.locators, locator); + srv6_locator_free(locator); + } - listnode_delete(srv6.locators, locator); - srv6_locator_free(locator); + list_delete(&srv6.locators); } - list_delete(&srv6.locators); + /* Free SRv6 SID formats */ + if (srv6.sid_formats) { + while (listcount(srv6.sid_formats)) { + format = listnode_head(srv6.sid_formats); + + zebra_srv6_sid_format_unregister(format); + zebra_srv6_sid_format_free(format); + } + + list_delete(&srv6.sid_formats); + } } void zebra_srv6_init(void) |