63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
/* $NetBSD: pktqueue.h,v 1.4 2014/06/16 00:40:10 ozaki-r Exp $ */
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/*-
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* Copyright (c) 2014 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Mindaugas Rasiukevicius.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _NET_PKTQUEUE_H_
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#define _NET_PKTQUEUE_H_
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#if !defined(_KERNEL)
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#error "not supposed to be exposed to userland."
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#endif
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#include <sys/sysctl.h>
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struct mbuf;
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typedef struct pktqueue pktqueue_t;
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typedef enum { PKTQ_MAXLEN, PKTQ_NITEMS, PKTQ_DROPS } pktq_count_t;
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pktqueue_t * pktq_create(size_t, void (*)(void *), void *);
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void pktq_destroy(pktqueue_t *);
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bool pktq_enqueue(pktqueue_t *, struct mbuf *, const u_int);
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struct mbuf * pktq_dequeue(pktqueue_t *);
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void pktq_barrier(pktqueue_t *);
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void pktq_flush(pktqueue_t *);
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int pktq_set_maxlen(pktqueue_t *, size_t);
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uint32_t pktq_rps_hash(const struct mbuf *);
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uint64_t pktq_get_count(pktqueue_t *, pktq_count_t);
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int sysctl_pktq_maxlen(SYSCTLFN_PROTO, pktqueue_t *);
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int sysctl_pktq_count(SYSCTLFN_PROTO, pktqueue_t *, u_int);
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#endif
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