isisd: Deal with SRv6 locator instead of chunk

Currently, when SRv6 is enabled in IS-IS, IS-IS requests a locator chunk
from Zebra. Zebra assigns a locator chunk to IS-IS, and then IS-IS can
allocate SIDs from the locator chunk.

Recently, the implementation of SRv6 in Zebra has been improved, and a
new API has been introduced for obtaining/releasing the SIDs.

Now, the daemons no longer need to request a chunk.

Instead, the daemons interact with Zebra to obtain information about the
locator and subsequently to allocate/release the SIDs.

This commit extends IS-IS to use the new SRv6 API. In particular, it
removes the chunk throughout the IS-IS code and modifies IS-IS to
request/save/advertise the locator instead of the chunk.

Signed-off-by: Carmine Scarpitta <cscarpit@cisco.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/isisd/isis_zebra.c b/isisd/isis_zebra.c
index 226ee56796..44ef182ba9 100644
--- a/isisd/isis_zebra.c
+++ b/isisd/isis_zebra.c
@@ -1369,6 +1369,9 @@ static int isis_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS)
 			}
 		}
 
+		srv6_locator_free(area->srv6db.srv6_locator);
+		area->srv6db.srv6_locator = NULL;
+
 		/* Regenerate LSPs to advertise that the locator no longer
 		 * exists */
 		lsp_regenerate_schedule(area, area->is_type, 0);