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isisd: Add function to build TLV from SRv6 Locator

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Add a function to build an SRv6 Locator TLV (RFC 9352 section #7.1) to
advertise a specific SRv6 Locator passed as an argument.

Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
This commit is contained in:
Carmine Scarpitta 2023-02-24 22:27:25 +01:00
parent 7e340af13b
commit 2aaa75a6f3
2 changed files with 21 additions and 0 deletions
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17
isisd/isis_tlvs.c
View File

@ -7731,3 +7731,20 @@ void isis_tlvs_set_purge_originator(struct isis_tlvs *tlvs,
sizeof(tlvs->purge_originator->sender));
}
}
/* Add an SRv6 Locator to the SRv6 Locator TLV */
void isis_tlvs_add_srv6_locator(struct isis_tlvs *tlvs, uint16_t mtid,
struct isis_srv6_locator *loc)
{
struct isis_srv6_locator_tlv *loc_tlv =
XCALLOC(MTYPE_ISIS_TLV, sizeof(*loc_tlv));
/* Fill in the SRv6 Locator TLV according to the SRv6 Locator
* configuration */
isis_srv6_locator2tlv(loc, loc_tlv);
/* Append the SRv6 Locator TLV to the TLVs list */
struct isis_item_list *l;
l = isis_get_mt_items(&tlvs->srv6_locator, mtid);
append_item(l, (struct isis_item *)loc_tlv);
}

4
isisd/isis_tlvs.h
View File

@ -22,6 +22,7 @@ DECLARE_MTYPE(ISIS_SUBTLV);
struct lspdb_head;
struct sr_prefix_cfg;
struct isis_srv6_locator;
struct isis_area_address {
struct isis_area_address *next;
@ -832,4 +833,7 @@ isis_tlvs_lookup_mt_router_info(struct isis_tlvs *tlvs, uint16_t mtid);
void isis_tlvs_set_purge_originator(struct isis_tlvs *tlvs,
const uint8_t *generator,
const uint8_t *sender);
void isis_tlvs_add_srv6_locator(struct isis_tlvs *tlvs, uint16_t mtid,
struct isis_srv6_locator *loc);
#endif