bgpd: Include structure when removing End.DT4/6 SID

Include SID structure information when removing an SRv6 End.DT4 or End.DT6 SID
from the forwarding plane.

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

bgpd/bgp_mplsvpn.c

@@ -493,6 +493,7 @@ void vpn_leak_zebra_vrf_sid_withdraw_per_af(struct bgp *bgp, afi_t afi)
 {
 	int debug = BGP_DEBUG(vpn, VPN_LEAK_LABEL);
 	struct srv6_sid_ctx ctx = {};
+	struct seg6local_context seg6localctx = {};
 
 	if (bgp->vrf_id == VRF_UNKNOWN) {
 		if (debug)
@@ -505,9 +506,22 @@ void vpn_leak_zebra_vrf_sid_withdraw_per_af(struct bgp *bgp, afi_t afi)
 		zlog_debug("%s: deleting sid for vrf %s afi (id=%d)", __func__,
 			   bgp->name_pretty, bgp->vrf_id);
 
+	if (bgp->vpn_policy[afi].tovpn_sid_locator) {
+		seg6localctx.block_len =
+			bgp->vpn_policy[afi].tovpn_sid_locator->block_bits_length;
+		seg6localctx.node_len =
+			bgp->vpn_policy[afi].tovpn_sid_locator->node_bits_length;
+		seg6localctx.function_len =
+			bgp->vpn_policy[afi]
+				.tovpn_sid_locator->function_bits_length;
+		seg6localctx.argument_len =
+			bgp->vpn_policy[afi]
+				.tovpn_sid_locator->argument_bits_length;
+	}
 	zclient_send_localsid(zclient,
-		bgp->vpn_policy[afi].tovpn_zebra_vrf_sid_last_sent,
-		bgp->vrf_id, ZEBRA_SEG6_LOCAL_ACTION_UNSPEC, NULL);
+			      bgp->vpn_policy[afi].tovpn_zebra_vrf_sid_last_sent,
+			      bgp->vrf_id, ZEBRA_SEG6_LOCAL_ACTION_UNSPEC,
+			      &seg6localctx);
 	XFREE(MTYPE_BGP_SRV6_SID,
 	      bgp->vpn_policy[afi].tovpn_zebra_vrf_sid_last_sent);
 	bgp->vpn_policy[afi].tovpn_zebra_vrf_sid_last_sent = NULL;