1/*	$NetBSD: altq_fifoq.h,v 1.7 2006/10/12 19:59:08 peter Exp $	*/
 2/*	$KAME: altq_fifoq.h,v 1.8 2002/11/29 04:36:23 kjc Exp $	*/
 3
 4/*
 5 * Copyright (C) 1997-2002
 6 *	Sony Computer Science Laboratories Inc.  All rights reserved.
 7 *
 8 * Redistribution and use in source and binary forms, with or without
 9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY SONY CSL AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED.  IN NO EVENT SHALL SONY CSL OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 */
29
30#ifndef _ALTQ_ALTQ_FIFOQ_H_
31#define	_ALTQ_ALTQ_FIFOQ_H_
32
33#ifdef _KERNEL
34typedef struct fifoq_state {
35	struct fifoq_state *q_next;	/* next fifoq_state in the list */
36	struct ifaltq *q_ifq;		/* backpointer to ifaltq */
37
38	struct mbuf *q_head;		/* head of queue */
39	struct mbuf *q_tail;		/* tail of queue */
40	int	q_len;			/* queue length */
41	int	q_limit;		/* max queue length */
42
43	/* statistics */
44	struct {
45		struct pktcntr	xmit_cnt;
46		struct pktcntr	drop_cnt;
47		u_int		period;
48	} q_stats;
49} fifoq_state_t;
50#endif
51
52struct fifoq_interface {
53	char	fifoq_ifname[IFNAMSIZ];
54};
55
56struct fifoq_getstats {
57	struct fifoq_interface iface;
58	int		q_len;
59	int		q_limit;
60	struct pktcntr	xmit_cnt;
61	struct pktcntr	drop_cnt;
62	u_int		period;
63};
64
65struct fifoq_conf {
66	struct fifoq_interface iface;
67	int fifoq_limit;
68};
69
70#define	FIFOQ_LIMIT	50	/* default max queue length */
71
72/*
73 * IOCTLs for FIFOQ
74 */
75#define	FIFOQ_IF_ATTACH		_IOW('Q', 1, struct fifoq_interface)
76#define	FIFOQ_IF_DETACH		_IOW('Q', 2, struct fifoq_interface)
77#define	FIFOQ_ENABLE		_IOW('Q', 3, struct fifoq_interface)
78#define	FIFOQ_DISABLE		_IOW('Q', 4, struct fifoq_interface)
79#define	FIFOQ_CONFIG		_IOWR('Q', 6, struct fifoq_conf)
80#define	FIFOQ_GETSTATS		_IOWR('Q', 12, struct fifoq_getstats)
81
82#endif /* _ALTQ_ALTQ_FIFOQ_H_ */