0bc69b6498
and move them in their proper places. Move the BRI registry from layer 2 (duh!) to layer 4, so active cards (which don't have layer 3 or layer 2 in their driver). Remove all remaining hard coded controller and driver types. Remove any arbitrary hard coded limits, at least those that show up in the internal API. This fixes PR 15950.
231 lines
6.5 KiB
C
231 lines
6.5 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_sframe.c - s frame handling routines
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* ----------------------------------------
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*
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* $Id: i4b_sframe.c,v 1.4 2002/03/24 20:36:03 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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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: i4b_sframe.c,v 1.4 2002/03/24 20:36:03 martin Exp $");
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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_l2.h>
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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_l2fsm.h>
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/*---------------------------------------------------------------------------*
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* process s frame
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*---------------------------------------------------------------------------*/
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void
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i4b_rxd_s_frame(l2_softc_t *l2sc, struct mbuf *m)
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{
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u_char *ptr = m->m_data;
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if(!((l2sc->tei_valid == TEI_VALID) &&
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(l2sc->tei == GETTEI(*(ptr+OFF_TEI)))))
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{
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i4b_Dfreembuf(m);
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return;
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}
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l2sc->rxd_CR = GETCR(*(ptr + OFF_SAPI));
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l2sc->rxd_PF = GETSPF(*(ptr + OFF_SNR));
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l2sc->rxd_NR = GETSNR(*(ptr + OFF_SNR));
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i4b_rxd_ack(l2sc, l2sc->rxd_NR);
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switch(*(ptr + OFF_SRCR))
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{
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case RR:
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l2sc->stat.rx_rr++; /* update statistics */
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NDBGL2(L2_S_MSG, "rx'd RR, N(R) = %d", l2sc->rxd_NR);
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i4b_next_l2state(l2sc, EV_RXRR);
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break;
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case RNR:
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l2sc->stat.rx_rnr++; /* update statistics */
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NDBGL2(L2_S_MSG, "rx'd RNR, N(R) = %d", l2sc->rxd_NR);
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i4b_next_l2state(l2sc, EV_RXRNR);
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break;
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case REJ:
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l2sc->stat.rx_rej++; /* update statistics */
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NDBGL2(L2_S_MSG, "rx'd REJ, N(R) = %d", l2sc->rxd_NR);
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i4b_next_l2state(l2sc, EV_RXREJ);
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break;
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default:
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l2sc->stat.err_rx_bads++; /* update statistics */
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NDBGL2(L2_S_ERR, "ERROR, unknown code, frame = ");
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i4b_print_frame(m->m_len, m->m_data);
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break;
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}
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i4b_Dfreembuf(m);
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}
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/*---------------------------------------------------------------------------*
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* transmit RR command
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*---------------------------------------------------------------------------*/
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void
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i4b_tx_rr_command(l2_softc_t *l2sc, pbit_t pbit)
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{
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struct mbuf *m;
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NDBGL2(L2_S_MSG, "tx RR, bri = %d", l2sc->bri);
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m = i4b_build_s_frame(l2sc, CR_CMD_TO_NT, pbit, RR);
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l2sc->driver->ph_data_req(l2sc->l1_token, m, MBUF_FREE);
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l2sc->stat.tx_rr++; /* update statistics */
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}
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/*---------------------------------------------------------------------------*
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* transmit RR response
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*---------------------------------------------------------------------------*/
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void
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i4b_tx_rr_response(l2_softc_t *l2sc, fbit_t fbit)
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{
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struct mbuf *m;
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NDBGL2(L2_S_MSG, "tx RR, bri = %d", l2sc->bri);
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m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, RR);
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l2sc->driver->ph_data_req(l2sc->l1_token, m, MBUF_FREE);
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l2sc->stat.tx_rr++; /* update statistics */
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}
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/*---------------------------------------------------------------------------*
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* transmit RNR command
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*---------------------------------------------------------------------------*/
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void
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i4b_tx_rnr_command(l2_softc_t *l2sc, pbit_t pbit)
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{
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struct mbuf *m;
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NDBGL2(L2_S_MSG, "tx RNR, bri = %d", l2sc->bri);
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m = i4b_build_s_frame(l2sc, CR_CMD_TO_NT, pbit, RNR);
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l2sc->driver->ph_data_req(l2sc->l1_token, m, MBUF_FREE);
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l2sc->stat.tx_rnr++; /* update statistics */
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}
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/*---------------------------------------------------------------------------*
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* transmit RNR response
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*---------------------------------------------------------------------------*/
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void
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i4b_tx_rnr_response(l2_softc_t *l2sc, fbit_t fbit)
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{
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struct mbuf *m;
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NDBGL2(L2_S_MSG, "tx RNR, bri = %d", l2sc->bri);
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m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, RNR);
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l2sc->driver->ph_data_req(l2sc->l1_token, m, MBUF_FREE);
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l2sc->stat.tx_rnr++; /* update statistics */
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}
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/*---------------------------------------------------------------------------*
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* transmit REJ response
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*---------------------------------------------------------------------------*/
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void
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i4b_tx_rej_response(l2_softc_t *l2sc, fbit_t fbit)
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{
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struct mbuf *m;
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NDBGL2(L2_S_MSG, "tx REJ, bri = %d", l2sc->bri);
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m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, REJ);
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l2sc->driver->ph_data_req(l2sc->l1_token, m, MBUF_FREE);
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l2sc->stat.tx_rej++; /* update statistics */
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}
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/*---------------------------------------------------------------------------*
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* build S-frame for sending
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*---------------------------------------------------------------------------*/
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struct mbuf *
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i4b_build_s_frame(l2_softc_t *l2sc, crbit_to_nt_t crbit, pbit_t pbit, u_char type)
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{
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struct mbuf *m;
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if((m = i4b_Dgetmbuf(S_FRAME_LEN)) == NULL)
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return(NULL);
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PUTSAPI(SAPI_CCP, crbit, m->m_data[OFF_SAPI]);
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PUTTEI(l2sc->tei, m->m_data[OFF_TEI]);
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m->m_data[OFF_SRCR] = type;
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m->m_data[OFF_SNR] = (l2sc->vr << 1) | (pbit & 0x01);
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return(m);
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}
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#endif /* NI4BQ921 > 0 */
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