NetBSD/sys/net/pktqueue.h

63 lines
2.3 KiB
C

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