From: Louis Scalbert <louis.scalbert@6wind.com>
Date: Tue, 2 May 2023 14:30:20 +0000 (+0200)
Subject: bgpd: add LP_TYPE_BGP_L3VPN_BIND label type
X-Git-Tag: base_9.1~351^2~12
X-Git-Url: https://git.puffer.fish/?a=commitdiff_plain;h=73e9ce89b909419728825723b60435d92a0e2723;p=mirror%2Ffrr.git

bgpd: add LP_TYPE_BGP_L3VPN_BIND label type

Redistributing mpls vpn prefixes with a new label
requires picking up unused MPLS local labels.

Today, there is an MPLS label pool which is owned
by the zebra daemon. BGP gets a chunk of labels
that are shared with the multiple usage of the BGP
daemon. A label type attribute is used whenever
BGP needs a new label value.

The 'LP_TYPE_BGP_L3VPN_BIND' label type will be used
to allocate the MPLS labels that will be bound to
the original next-hop, and label value of an L3VPN
update.

Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
---

diff --git a/bgpd/bgp_labelpool.c b/bgpd/bgp_labelpool.c
index faddfc995f..91763b85a0 100644
--- a/bgpd/bgp_labelpool.c
+++ b/bgpd/bgp_labelpool.c
@@ -843,6 +843,16 @@ DEFUN(show_bgp_labelpool_ledger, show_bgp_labelpool_ledger_cmd,
 				vty_out(vty, "%-18s         %u\n", "nexthop",
 					lcb->label);
 			break;
+		case LP_TYPE_BGP_L3VPN_BIND:
+			if (uj) {
+				json_object_string_add(json_elem, "prefix",
+						       "l3vpn-bind");
+				json_object_int_add(json_elem, "label",
+						    lcb->label);
+			} else
+				vty_out(vty, "%-18s         %u\n", "l3vpn-bind",
+					lcb->label);
+			break;
 		}
 	}
 	if (uj)
@@ -941,6 +951,15 @@ DEFUN(show_bgp_labelpool_inuse, show_bgp_labelpool_inuse_cmd,
 				vty_out(vty, "%-18s         %u\n", "nexthop",
 					label);
 			break;
+		case LP_TYPE_BGP_L3VPN_BIND:
+			if (uj) {
+				json_object_string_add(json_elem, "prefix",
+						       "l3vpn-bind");
+				json_object_int_add(json_elem, "label", label);
+			} else
+				vty_out(vty, "%-18s         %u\n", "l3vpn-bind",
+					label);
+			break;
 		}
 	}
 	if (uj)
@@ -1020,6 +1039,13 @@ DEFUN(show_bgp_labelpool_requests, show_bgp_labelpool_requests_cmd,
 			else
 				vty_out(vty, "Nexthop\n");
 			break;
+		case LP_TYPE_BGP_L3VPN_BIND:
+			if (uj)
+				json_object_string_add(json_elem, "prefix",
+						       "l3vpn-bind");
+			else
+				vty_out(vty, "L3VPN-BIND\n");
+			break;
 		}
 	}
 	if (uj)
diff --git a/bgpd/bgp_labelpool.h b/bgpd/bgp_labelpool.h
index b33527186e..9a110e6297 100644
--- a/bgpd/bgp_labelpool.h
+++ b/bgpd/bgp_labelpool.h
@@ -18,6 +18,7 @@
 #define LP_TYPE_VRF	0x00000001
 #define LP_TYPE_BGP_LU	0x00000002
 #define LP_TYPE_NEXTHOP 0x00000003
+#define LP_TYPE_BGP_L3VPN_BIND 0x00000004
 
 PREDECL_LIST(lp_fifo);