isisd: Add SRv6 End.X SID to Sub-TLV copy func

Extend the Extended IS Reachability TLV copy function to copy the SRv6
End.X SID Sub-TLV and SRv6 LAN End.X SID Sub-TLV, if present.

Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>

1 files changed, 55 insertions, 0 deletions

diff --git a/isisd/isis_tlvs.c b/isisd/isis_tlvs.c
index 9fc602c20..cf81532e8 100644
--- a/isisd/isis_tlvs.c
+++ b/isisd/isis_tlvs.c
@@ -113,6 +113,8 @@ static const struct tlv_ops *const tlv_table[ISIS_CONTEXT_MAX][ISIS_TLV_MAX];
 static void append_item(struct isis_item_list *dest, struct isis_item *item);
 static void init_item_list(struct isis_item_list *items);
 
+static struct isis_subsubtlvs *
+isis_copy_subsubtlvs(struct isis_subsubtlvs *subsubtlvs);
 static void isis_format_subsubtlvs(struct isis_subsubtlvs *subsubtlvs,
 				   struct sbuf *buf, struct json_object *json,
 				   int indent);
@@ -197,6 +199,8 @@ copy_item_ext_subtlvs(struct isis_ext_subtlvs *exts, uint16_t mtid)
 	struct isis_lan_adj_sid *lan;
 	struct listnode *node, *nnode;
 	struct isis_asla_subtlvs *new_asla, *asla;
+	struct isis_srv6_endx_sid_subtlv *srv6_adj;
+	struct isis_srv6_lan_endx_sid_subtlv *srv6_lan;
 
 	/* Copy the Extended IS main part */
 	memcpy(rv, exts, sizeof(struct isis_ext_subtlvs));
@@ -215,9 +219,16 @@ copy_item_ext_subtlvs(struct isis_ext_subtlvs *exts, uint16_t mtid)
 	init_item_list(&rv->adj_sid);
 	init_item_list(&rv->lan_sid);
 
+	/* Prepare SRv6 (LAN) End.X SID */
+	init_item_list(&rv->srv6_endx_sid);
+	init_item_list(&rv->srv6_lan_endx_sid);
+
 	UNSET_SUBTLV(rv, EXT_ADJ_SID);
 	UNSET_SUBTLV(rv, EXT_LAN_ADJ_SID);
 
+	UNSET_SUBTLV(rv, EXT_SRV6_ENDX_SID);
+	UNSET_SUBTLV(rv, EXT_SRV6_LAN_ENDX_SID);
+
 	/* Copy Adj SID list for IPv4 & IPv6 in function of MT ID */
 	for (adj = (struct isis_adj_sid *)exts->adj_sid.head; adj != NULL;
 	     adj = adj->next) {
@@ -261,6 +272,50 @@ copy_item_ext_subtlvs(struct isis_ext_subtlvs *exts, uint16_t mtid)
 		SET_SUBTLV(rv, EXT_LAN_ADJ_SID);
 	}
 
+	/* Copy SRv6 End.X SID list for IPv4 & IPv6 in function of MT ID */
+	for (srv6_adj = (struct isis_srv6_endx_sid_subtlv *)
+				exts->srv6_endx_sid.head;
+	     srv6_adj != NULL; srv6_adj = srv6_adj->next) {
+		if ((mtid != 65535) && (mtid != ISIS_MT_DISABLE) &&
+		    ((mtid != ISIS_MT_IPV6_UNICAST)))
+			continue;
+
+		struct isis_srv6_endx_sid_subtlv *new;
+
+		new = XCALLOC(MTYPE_ISIS_SUBTLV,
+			      sizeof(struct isis_srv6_endx_sid_subtlv));
+		new->flags = srv6_adj->flags;
+		new->algorithm = srv6_adj->algorithm;
+		new->weight = srv6_adj->weight;
+		new->behavior = srv6_adj->behavior;
+		new->sid = srv6_adj->sid;
+		new->subsubtlvs = isis_copy_subsubtlvs(srv6_adj->subsubtlvs);
+		append_item(&rv->srv6_endx_sid, (struct isis_item *)new);
+		SET_SUBTLV(rv, EXT_SRV6_ENDX_SID);
+	}
+	/* Same for SRv6 LAN End.X SID */
+	for (srv6_lan = (struct isis_srv6_lan_endx_sid_subtlv *)
+				exts->srv6_lan_endx_sid.head;
+	     srv6_lan != NULL; srv6_lan = srv6_lan->next) {
+		if ((mtid != 65535) && (mtid != ISIS_MT_DISABLE) &&
+		    ((mtid != ISIS_MT_IPV6_UNICAST)))
+			continue;
+
+		struct isis_srv6_lan_endx_sid_subtlv *new;
+
+		new = XCALLOC(MTYPE_ISIS_SUBTLV,
+			      sizeof(struct isis_srv6_lan_endx_sid_subtlv));
+		memcpy(new->neighbor_id, srv6_lan->neighbor_id, 6);
+		new->flags = srv6_lan->flags;
+		new->algorithm = srv6_lan->algorithm;
+		new->weight = srv6_lan->weight;
+		new->behavior = srv6_lan->behavior;
+		new->sid = srv6_lan->sid;
+		new->subsubtlvs = isis_copy_subsubtlvs(srv6_lan->subsubtlvs);
+		append_item(&rv->srv6_lan_endx_sid, (struct isis_item *)new);
+		SET_SUBTLV(rv, EXT_SRV6_LAN_ENDX_SID);
+	}
+
 	rv->aslas = list_new();
 
 	for (ALL_LIST_ELEMENTS(exts->aslas, node, nnode, asla)) {