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pktqueue.h revision 1.4.6.2
      1  1.4.6.2  tls /*	$NetBSD: pktqueue.h,v 1.4.6.2 2014/08/20 00:04:34 tls Exp $	*/
      2  1.4.6.2  tls 
      3  1.4.6.2  tls /*-
      4  1.4.6.2  tls  * Copyright (c) 2014 The NetBSD Foundation, Inc.
      5  1.4.6.2  tls  * All rights reserved.
      6  1.4.6.2  tls  *
      7  1.4.6.2  tls  * This code is derived from software contributed to The NetBSD Foundation
      8  1.4.6.2  tls  * by Mindaugas Rasiukevicius.
      9  1.4.6.2  tls  *
     10  1.4.6.2  tls  * Redistribution and use in source and binary forms, with or without
     11  1.4.6.2  tls  * modification, are permitted provided that the following conditions
     12  1.4.6.2  tls  * are met:
     13  1.4.6.2  tls  * 1. Redistributions of source code must retain the above copyright
     14  1.4.6.2  tls  *    notice, this list of conditions and the following disclaimer.
     15  1.4.6.2  tls  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.4.6.2  tls  *    notice, this list of conditions and the following disclaimer in the
     17  1.4.6.2  tls  *    documentation and/or other materials provided with the distribution.
     18  1.4.6.2  tls  *
     19  1.4.6.2  tls  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  1.4.6.2  tls  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  1.4.6.2  tls  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  1.4.6.2  tls  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  1.4.6.2  tls  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  1.4.6.2  tls  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  1.4.6.2  tls  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  1.4.6.2  tls  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  1.4.6.2  tls  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  1.4.6.2  tls  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  1.4.6.2  tls  * POSSIBILITY OF SUCH DAMAGE.
     30  1.4.6.2  tls  */
     31  1.4.6.2  tls 
     32  1.4.6.2  tls #ifndef _NET_PKTQUEUE_H_
     33  1.4.6.2  tls #define _NET_PKTQUEUE_H_
     34  1.4.6.2  tls 
     35  1.4.6.2  tls #if !defined(_KERNEL)
     36  1.4.6.2  tls #error "not supposed to be exposed to userland."
     37  1.4.6.2  tls #endif
     38  1.4.6.2  tls 
     39  1.4.6.2  tls #include <sys/sysctl.h>
     40  1.4.6.2  tls 
     41  1.4.6.2  tls struct mbuf;
     42  1.4.6.2  tls 
     43  1.4.6.2  tls typedef struct pktqueue pktqueue_t;
     44  1.4.6.2  tls 
     45  1.4.6.2  tls typedef enum { PKTQ_MAXLEN, PKTQ_NITEMS, PKTQ_DROPS } pktq_count_t;
     46  1.4.6.2  tls 
     47  1.4.6.2  tls pktqueue_t *	pktq_create(size_t, void (*)(void *), void *);
     48  1.4.6.2  tls void		pktq_destroy(pktqueue_t *);
     49  1.4.6.2  tls 
     50  1.4.6.2  tls bool		pktq_enqueue(pktqueue_t *, struct mbuf *, const u_int);
     51  1.4.6.2  tls struct mbuf *	pktq_dequeue(pktqueue_t *);
     52  1.4.6.2  tls void		pktq_barrier(pktqueue_t *);
     53  1.4.6.2  tls void		pktq_flush(pktqueue_t *);
     54  1.4.6.2  tls int		pktq_set_maxlen(pktqueue_t *, size_t);
     55  1.4.6.2  tls 
     56  1.4.6.2  tls uint32_t	pktq_rps_hash(const struct mbuf *);
     57  1.4.6.2  tls uint64_t	pktq_get_count(pktqueue_t *, pktq_count_t);
     58  1.4.6.2  tls 
     59  1.4.6.2  tls int		sysctl_pktq_maxlen(SYSCTLFN_PROTO, pktqueue_t *);
     60  1.4.6.2  tls int		sysctl_pktq_count(SYSCTLFN_PROTO, pktqueue_t *, u_int);
     61  1.4.6.2  tls 
     62  1.4.6.2  tls #endif
     63