Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 57 insertions, 0 deletions

diff --git a/bgpd/bgp_labelpool.h b/bgpd/bgp_labelpool.h
new file mode 100644
index 0000000..2f3ffe4
--- /dev/null
+++ b/bgpd/bgp_labelpool.h
@@ -0,0 +1,57 @@
+/*
+ * BGP Label Pool - Manage label chunk allocations from zebra asynchronously
+ *
+ * Copyright (C) 2018 LabN Consulting, L.L.C.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#ifndef _FRR_BGP_LABELPOOL_H
+#define _FRR_BGP_LABELPOOL_H
+
+#include <zebra.h>
+
+#include "mpls.h"
+
+/*
+ * Types used in bgp_lp_get for debug tracking; add more as needed
+ */
+#define LP_TYPE_VRF	0x00000001
+#define LP_TYPE_BGP_LU	0x00000002
+
+PREDECL_LIST(lp_fifo);
+
+struct labelpool {
+	struct skiplist		*ledger;	/* all requests */
+	struct skiplist		*inuse;		/* individual labels */
+	struct list		*chunks;	/* granted by zebra */
+	struct lp_fifo_head	requests;	/* blocked on zebra */
+	struct work_queue	*callback_q;
+	uint32_t		pending_count;	/* requested from zebra */
+	uint32_t reconnect_count;		/* zebra reconnections */
+	uint32_t next_chunksize;		/* request this many labels */
+};
+
+extern void bgp_lp_init(struct thread_master *master, struct labelpool *pool);
+extern void bgp_lp_finish(void);
+extern void bgp_lp_get(int type, void *labelid,
+	int (*cbfunc)(mpls_label_t label, void *labelid, bool allocated));
+extern void bgp_lp_release(int type, void *labelid, mpls_label_t label);
+extern void bgp_lp_event_chunk(uint8_t keep, uint32_t first, uint32_t last);
+extern void bgp_lp_event_zebra_down(void);
+extern void bgp_lp_event_zebra_up(void);
+extern void bgp_lp_vty_init(void);
+
+#endif /* _FRR_BGP_LABELPOOL_H */