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/*
* 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 */
};
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);
#endif /* _FRR_BGP_LABELPOOL_H */
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