1/*
2 * ng_h4_var.h
3 */
4
5/*-
6 * Copyright (c) 2001-2002 Maksim Yevmenkin <m_evmenkin@yahoo.com>
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 *    notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 *    notice, this list of conditions and the following disclaimer in the
16 *    documentation and/or other materials provided with the distribution.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * SUCH DAMAGE.
29 *
30 * $Id: ng_h4_var.h,v 1.5 2005/10/31 17:57:43 max Exp $
31 * $FreeBSD$
32 *
33 * Based on:
34 * ---------
35 *
36 * FreeBSD: src/sys/netgraph/ng_tty.h
37 * Author: Archie Cobbs <archie@freebsd.org>
38 */
39
40#ifndef _NETGRAPH_H4_VAR_H_
41#define _NETGRAPH_H4_VAR_H_
42
43/*
44 * Malloc declaration
45 */
46
47#ifndef NG_SEPARATE_MALLOC
48MALLOC_DECLARE(M_NETGRAPH_H4);
49#else
50#define M_NETGRAPH_H4 M_NETGRAPH
51#endif /* NG_SEPARATE_MALLOC */
52
53/*
54 * Debug
55 */
56
57#define	NG_H4_ALERT	if (sc->debug >= NG_H4_ALERT_LEVEL) printf
58#define	NG_H4_ERR	if (sc->debug >= NG_H4_ERR_LEVEL)   printf
59#define	NG_H4_WARN	if (sc->debug >= NG_H4_WARN_LEVEL)  printf
60#define	NG_H4_INFO	if (sc->debug >= NG_H4_INFO_LEVEL)  printf
61
62#define NG_H4_HIWATER		256	/* High water mark on output */
63
64/*
65 * Per-node private info
66 */
67
68typedef struct ng_h4_info {
69	struct tty		*tp;	/* Terminal device */
70	node_p			 node;	/* Netgraph node */
71
72	ng_h4_node_debug_ep	 debug;	/* Debug level */
73	ng_h4_node_state_ep	 state;	/* State */
74
75	ng_h4_node_stat_ep	 stat;
76#define NG_H4_STAT_PCKTS_SENT(s)	(s).pckts_sent ++
77#define NG_H4_STAT_BYTES_SENT(s, n)	(s).bytes_sent += (n)
78#define NG_H4_STAT_PCKTS_RECV(s)	(s).pckts_recv ++
79#define NG_H4_STAT_BYTES_RECV(s, n)	(s).bytes_recv += (n)
80#define NG_H4_STAT_OERROR(s)		(s).oerrors ++
81#define NG_H4_STAT_IERROR(s)		(s).ierrors ++
82#define NG_H4_STAT_RESET(s)		bzero(&(s), sizeof((s)))
83
84	struct ifqueue		outq;	/* Queue of outgoing mbuf's */
85#define NG_H4_DEFAULTQLEN	 12     /* XXX max number of mbuf's in outq */
86#define	NG_H4_LOCK(sc)		IF_LOCK(&sc->outq)
87#define	NG_H4_UNLOCK(sc)	IF_UNLOCK(&sc->outq)
88
89#define NG_H4_IBUF_SIZE		1024	/* XXX must be big enough to hold full
90					   frame */
91	u_int8_t		 ibuf[NG_H4_IBUF_SIZE];	/* Incoming data */
92	u_int32_t		 got;	/* Number of bytes we have received */
93	u_int32_t		 want;	/* Number of bytes we want to receive */
94
95	hook_p			 hook;	/* Upstream hook */
96	struct callout		 timo;	/* See man timeout(9) */
97
98	u_int8_t		 dying;	/* are we dying? */
99} ng_h4_info_t;
100typedef ng_h4_info_t *		 ng_h4_info_p;
101
102#endif /* _NETGRAPH_H4_VAR_H_ */
103
104