5171d409a5
This now provides slightly more functionality than the FreeBSD layer1-newbus interface. It was meant to be a simple change to one header and a few c files, but the change rippled all through various stuff. To prevent a change to the kernel<->userland interface right now the kernel is now lying about card types to userland (but who cares). This will be fixed when the userland interface changes, after layer 3 <-> layer 4 has been fixed. Functional changes: Provide a clean interface for hardware drivers to attach to the upper layers. This will need another small change in the B-channel handling when a similar change to the layer 3 <-> layer 4 interface happens. Avoid passing indices into global arrays of pointers around, instead pass the pointers itself. Don't code hardware driver types by predefined magic numbers (think LKM). Prepare for detachable drivers (think pcmcia). While there remove some sets of function pointers always pointing to the same function (meant to be the configurable set of D channel protocol handlers). It is unlikely another supported D-channel protocol will fit into that (maximal layer interface) abstraction. When we get support for another protocol, we will need to come up with a workable interface. Besides, the old implementation was, uhm, strange.
163 lines
4.7 KiB
C
163 lines
4.7 KiB
C
/*
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* Copyright (c) 1997, 2000 Hellmuth Michaelis. All rights reserved.
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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 AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*---------------------------------------------------------------------------
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*
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* i4b_lme.c - layer management entity
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* -------------------------------------
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*
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* $Id: i4b_lme.c,v 1.2 2001/03/24 12:40:32 martin Exp $
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*
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* $FreeBSD$
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*
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* last edit-date: [Fri Jan 5 11:33:47 2001]
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*
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*---------------------------------------------------------------------------*/
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#ifdef __FreeBSD__
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#include "i4bq921.h"
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#else
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#define NI4BQ921 1
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#endif
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#if NI4BQ921 > 0
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#if defined(__NetBSD__) && __NetBSD_Version__ >= 104230000
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#include <sys/callout.h>
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#endif
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#ifdef __FreeBSD__
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#include <machine/i4b_debug.h>
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#include <machine/i4b_ioctl.h>
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#else
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#include <netisdn/i4b_debug.h>
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#include <netisdn/i4b_ioctl.h>
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#endif
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#include <netisdn/i4b_l1l2.h>
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#include <netisdn/i4b_isdnq931.h>
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#include <netisdn/i4b_mbuf.h>
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#include <netisdn/i4b_l2.h>
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#include <netisdn/i4b_l2fsm.h>
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/*---------------------------------------------------------------------------*
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* mdl assign indication handler
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*---------------------------------------------------------------------------*/
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void
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i4b_mdl_assign_ind(l2_softc_t *l2sc)
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{
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NDBGL2(L2_PRIM, "bri %d", l2sc->bri);
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i4b_l1_activate(l2sc);
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if(l2sc->tei_valid == TEI_VALID)
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{
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l2sc->T202func = (void(*)(void*))i4b_tei_verify;
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l2sc->N202 = N202DEF;
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i4b_tei_verify(l2sc);
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}
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else
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{
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l2sc->T202func = (void(*)(void*))i4b_tei_assign;
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l2sc->N202 = N202DEF;
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i4b_tei_assign(l2sc);
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}
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}
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/*---------------------------------------------------------------------------*
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* i4b_mdl_error_ind handler (Q.921 01/94 pp 156)
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*---------------------------------------------------------------------------*/
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void
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i4b_mdl_error_ind(l2_softc_t *l2sc, char *where, int errorcode)
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{
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#if DO_I4B_DEBUG
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static char *error_text[] = {
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"MDL_ERR_A: rx'd unsolicited response - supervisory (F=1)",
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"MDL_ERR_B: rx'd unsolicited response - DM (F=1)",
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"MDL_ERR_C: rx'd unsolicited response - UA (F=1)",
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"MDL_ERR_D: rx'd unsolicited response - UA (F=0)",
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"MDL_ERR_E: rx'd unsolicited response - DM (F=0)",
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"MDL_ERR_F: peer initiated re-establishment - SABME",
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"MDL_ERR_G: unsuccessful transmission N200times - SABME",
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"MDL_ERR_H: unsuccessful transmission N200times - DIS",
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"MDL_ERR_I: unsuccessful transmission N200times - Status ENQ",
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"MDL_ERR_J: other error - N(R) error",
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"MDL_ERR_K: other error - rx'd FRMR response",
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"MDL_ERR_L: other error - rx'd undefined frame",
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"MDL_ERR_M: other error - receipt of I field not permitted",
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"MDL_ERR_N: other error - rx'd frame with wrong size",
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"MDL_ERR_O: other error - N201 error",
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"MDL_ERR_MAX: i4b_mdl_error_ind called with wrong parameter!!!"
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};
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#endif
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if(errorcode > MDL_ERR_MAX)
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errorcode = MDL_ERR_MAX;
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NDBGL2(L2_ERROR, "bri = %d, location = %s", l2sc->bri, where);
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NDBGL2(L2_ERROR, "error = %s", error_text[errorcode]);
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switch(errorcode)
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{
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case MDL_ERR_A:
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case MDL_ERR_B:
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break;
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case MDL_ERR_C:
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case MDL_ERR_D:
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i4b_tei_verify(l2sc);
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break;
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case MDL_ERR_E:
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case MDL_ERR_F:
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break;
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case MDL_ERR_G:
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case MDL_ERR_H:
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i4b_tei_verify(l2sc);
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break;
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case MDL_ERR_I:
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case MDL_ERR_J:
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case MDL_ERR_K:
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case MDL_ERR_L:
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case MDL_ERR_M:
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case MDL_ERR_N:
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case MDL_ERR_O:
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break;
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default:
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break;
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}
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}
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#endif /* NI4BQ921 > 0 */
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