1/*
2 * Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
16 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23 * SUCH DAMAGE.
24 *
25 *---------------------------------------------------------------------------
26 *
27 *	i4b_lme.c - layer management entity
28 *	-------------------------------------
29 *
30 *	$Id: i4b_lme.c,v 1.9 2005/12/11 12:25:06 christos Exp $
31 *
32 * $FreeBSD$
33 *
34 *      last edit-date: [Fri Jan  5 11:33:47 2001]
35 *
36 *---------------------------------------------------------------------------*/
37
38#include <sys/cdefs.h>
39__KERNEL_RCSID(0, "$NetBSD: i4b_lme.c,v 1.5.8.5 2005/11/10 14:11:36 skrll Exp $");
40
41#ifdef __FreeBSD__
42#include "i4bq921.h"
43#else
44#define	NI4BQ921	1
45#endif
46#if NI4BQ921 > 0
47
48#include <sys/param.h>
49#include <sys/kernel.h>
50#include <sys/systm.h>
51#include <sys/mbuf.h>
52#include <sys/socket.h>
53#include <net/if.h>
54
55#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
56#include <sys/callout.h>
57#endif
58
59#ifdef __FreeBSD__
60#include <machine/i4b_debug.h>
61#include <machine/i4b_ioctl.h>
62#else
63#include <netisdn/i4b_debug.h>
64#include <netisdn/i4b_ioctl.h>
65#endif
66
67#include <netisdn/i4b_l2.h>
68#include <netisdn/i4b_l1l2.h>
69#include <netisdn/i4b_isdnq931.h>
70#include <netisdn/i4b_mbuf.h>
71#include <netisdn/i4b_l2fsm.h>
72#include <netisdn/i4b_l3l4.h>
73
74/*---------------------------------------------------------------------------*
75 *	mdl assign indication handler
76 *---------------------------------------------------------------------------*/
77void
78i4b_mdl_assign_ind(l2_softc_t *l2sc)
79{
80	NDBGL2(L2_PRIM, "isdnif %d", l2sc->drv->isdnif);
81
82	i4b_l1_activate(l2sc);
83
84	if(l2sc->tei_valid == TEI_VALID)
85	{
86		l2sc->T202func = (void(*)(void*))i4b_tei_verify;
87		l2sc->N202 = N202DEF;
88		i4b_tei_verify(l2sc);
89	}
90	else
91	{
92		l2sc->T202func = (void(*)(void*))i4b_tei_assign;
93		l2sc->N202 = N202DEF;
94		i4b_tei_assign(l2sc);
95	}
96}
97
98/*---------------------------------------------------------------------------*
99 *	i4b_mdl_error_ind handler (Q.921 01/94 pp 156)
100 *---------------------------------------------------------------------------*/
101void
102i4b_mdl_error_ind(l2_softc_t *l2sc, const char *where, int errorcode)
103{
104#if DO_I4B_DEBUG
105	static const char *error_text[] = {
106		"MDL_ERR_A: rx'd unsolicited response - supervisory (F=1)",
107		"MDL_ERR_B: rx'd unsolicited response - DM (F=1)",
108		"MDL_ERR_C: rx'd unsolicited response - UA (F=1)",
109		"MDL_ERR_D: rx'd unsolicited response - UA (F=0)",
110		"MDL_ERR_E: rx'd unsolicited response - DM (F=0)",
111		"MDL_ERR_F: peer initiated re-establishment - SABME",
112		"MDL_ERR_G: unsuccessful transmission N200times - SABME",
113		"MDL_ERR_H: unsuccessful transmission N200times - DIS",
114		"MDL_ERR_I: unsuccessful transmission N200times - Status ENQ",
115		"MDL_ERR_J: other error - N(R) error",
116		"MDL_ERR_K: other error - rx'd FRMR response",
117		"MDL_ERR_L: other error - rx'd undefined frame",
118		"MDL_ERR_M: other error - receipt of I field not permitted",
119		"MDL_ERR_N: other error - rx'd frame with wrong size",
120		"MDL_ERR_O: other error - N201 error",
121		"MDL_ERR_MAX: i4b_mdl_error_ind called with wrong parameter!!!"
122	};
123#endif
124
125	if(errorcode > MDL_ERR_MAX)
126		errorcode = MDL_ERR_MAX;
127
128	NDBGL2(L2_ERROR, "isdnif = %d, location = %s",
129	    l2sc->drv->isdnif, where);
130	NDBGL2(L2_ERROR, "error = %s", error_text[errorcode]);
131
132	switch(errorcode)
133	{
134		case MDL_ERR_A:
135		case MDL_ERR_B:
136			break;
137
138		case MDL_ERR_C:
139		case MDL_ERR_D:
140			i4b_tei_verify(l2sc);
141			break;
142
143		case MDL_ERR_E:
144		case MDL_ERR_F:
145			break;
146
147		case MDL_ERR_G:
148		case MDL_ERR_H:
149			i4b_tei_verify(l2sc);
150			break;
151
152		case MDL_ERR_I:
153		case MDL_ERR_J:
154		case MDL_ERR_K:
155		case MDL_ERR_L:
156		case MDL_ERR_M:
157		case MDL_ERR_N:
158		case MDL_ERR_O:
159			break;
160
161		default:
162			break;
163	}
164}
165
166#endif /* NI4BQ921 > 0 */
167