62efea1e92
ioccom.h defines only implementation detail, and should therefore only be included from the #include which defines the ioctl tags, in other words: never include it from *.c
232 lines
6.6 KiB
C
232 lines
6.6 KiB
C
/*
|
|
* Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
*---------------------------------------------------------------------------
|
|
*
|
|
* i4b_sframe.c - s frame handling routines
|
|
* ----------------------------------------
|
|
*
|
|
* $Id: i4b_sframe.c,v 1.12 1999/12/13 21:25:27 hm Exp $
|
|
*
|
|
* $FreeBSD$
|
|
*
|
|
* last edit-date: [Mon Dec 13 22:04:17 1999]
|
|
*
|
|
*---------------------------------------------------------------------------*/
|
|
|
|
#ifdef __FreeBSD__
|
|
#include "i4bq921.h"
|
|
#else
|
|
#define NI4BQ921 1
|
|
#endif
|
|
#if NI4BQ921 > 0
|
|
|
|
#include <sys/param.h>
|
|
|
|
#if defined(__FreeBSD__)
|
|
#else
|
|
#include <sys/ioctl.h>
|
|
#endif
|
|
|
|
#include <sys/systm.h>
|
|
#include <sys/mbuf.h>
|
|
#include <sys/socket.h>
|
|
#include <net/if.h>
|
|
|
|
#ifdef __FreeBSD__
|
|
#include <machine/i4b_debug.h>
|
|
#include <machine/i4b_ioctl.h>
|
|
#else
|
|
#include <i4b/i4b_debug.h>
|
|
#include <i4b/i4b_ioctl.h>
|
|
#endif
|
|
|
|
#include <i4b/include/i4b_l1l2.h>
|
|
#include <i4b/include/i4b_l2l3.h>
|
|
#include <i4b/include/i4b_isdnq931.h>
|
|
#include <i4b/include/i4b_mbuf.h>
|
|
|
|
#include <i4b/layer2/i4b_l2.h>
|
|
#include <i4b/layer2/i4b_l2fsm.h>
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* process s frame
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
i4b_rxd_s_frame(int unit, struct mbuf *m)
|
|
{
|
|
l2_softc_t *l2sc = &l2_softc[unit];
|
|
u_char *ptr = m->m_data;
|
|
|
|
if(!((l2sc->tei_valid == TEI_VALID) &&
|
|
(l2sc->tei == GETTEI(*(ptr+OFF_TEI)))))
|
|
{
|
|
i4b_Dfreembuf(m);
|
|
return;
|
|
}
|
|
|
|
l2sc->rxd_CR = GETCR(*(ptr + OFF_SAPI));
|
|
l2sc->rxd_PF = GETSPF(*(ptr + OFF_SNR));
|
|
l2sc->rxd_NR = GETSNR(*(ptr + OFF_SNR));
|
|
|
|
i4b_rxd_ack(l2sc, l2sc->rxd_NR);
|
|
|
|
switch(*(ptr + OFF_SRCR))
|
|
{
|
|
case RR:
|
|
l2sc->stat.rx_rr++; /* update statistics */
|
|
DBGL2(L2_S_MSG, "i4b_rxd_s_frame", ("rx'd RR, N(R) = %d\n", l2sc->rxd_NR));
|
|
i4b_next_l2state(l2sc, EV_RXRR);
|
|
break;
|
|
|
|
case RNR:
|
|
l2sc->stat.rx_rnr++; /* update statistics */
|
|
DBGL2(L2_S_MSG, "i4b_rxd_s_frame", ("rx'd RNR, N(R) = %d\n", l2sc->rxd_NR));
|
|
i4b_next_l2state(l2sc, EV_RXRNR);
|
|
break;
|
|
|
|
case REJ:
|
|
l2sc->stat.rx_rej++; /* update statistics */
|
|
DBGL2(L2_S_MSG, "i4b_rxd_s_frame", ("rx'd REJ, N(R) = %d\n", l2sc->rxd_NR));
|
|
i4b_next_l2state(l2sc, EV_RXREJ);
|
|
break;
|
|
|
|
default:
|
|
l2sc->stat.err_rx_bads++; /* update statistics */
|
|
DBGL2(L2_S_ERR, "i4b_rxd_s_frame", ("ERROR, unknown code, frame = \n"));
|
|
i4b_print_frame(m->m_len, m->m_data);
|
|
break;
|
|
}
|
|
i4b_Dfreembuf(m);
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* transmit RR command
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
i4b_tx_rr_command(l2_softc_t *l2sc, pbit_t pbit)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
DBGL2(L2_S_MSG, "i4b_tx_rr_command", ("tx RR, unit = %d\n", l2sc->unit));
|
|
|
|
m = i4b_build_s_frame(l2sc, CR_CMD_TO_NT, pbit, RR);
|
|
|
|
PH_Data_Req(l2sc->unit, m, MBUF_FREE);
|
|
|
|
l2sc->stat.tx_rr++; /* update statistics */
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* transmit RR response
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
i4b_tx_rr_response(l2_softc_t *l2sc, fbit_t fbit)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
DBGL2(L2_S_MSG, "i4b_tx_rr_response", ("tx RR, unit = %d\n", l2sc->unit));
|
|
|
|
m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, RR);
|
|
|
|
PH_Data_Req(l2sc->unit, m, MBUF_FREE);
|
|
|
|
l2sc->stat.tx_rr++; /* update statistics */
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* transmit RNR command
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
i4b_tx_rnr_command(l2_softc_t *l2sc, pbit_t pbit)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
DBGL2(L2_S_MSG, "i4b_tx_rnr_command", ("tx RNR, unit = %d\n", l2sc->unit));
|
|
|
|
m = i4b_build_s_frame(l2sc, CR_CMD_TO_NT, pbit, RNR);
|
|
|
|
PH_Data_Req(l2sc->unit, m, MBUF_FREE);
|
|
|
|
l2sc->stat.tx_rnr++; /* update statistics */
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* transmit RNR response
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
i4b_tx_rnr_response(l2_softc_t *l2sc, fbit_t fbit)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
DBGL2(L2_S_MSG, "i4b_tx_rnr_response", ("tx RNR, unit = %d\n", l2sc->unit));
|
|
|
|
m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, RNR);
|
|
|
|
PH_Data_Req(l2sc->unit, m, MBUF_FREE);
|
|
|
|
l2sc->stat.tx_rnr++; /* update statistics */
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* transmit REJ response
|
|
*---------------------------------------------------------------------------*/
|
|
void
|
|
i4b_tx_rej_response(l2_softc_t *l2sc, fbit_t fbit)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
DBGL2(L2_S_MSG, "i4b_tx_rej_response", ("tx REJ, unit = %d\n", l2sc->unit));
|
|
|
|
m = i4b_build_s_frame(l2sc, CR_RSP_TO_NT, fbit, REJ);
|
|
|
|
PH_Data_Req(l2sc->unit, m, MBUF_FREE);
|
|
|
|
l2sc->stat.tx_rej++; /* update statistics */
|
|
}
|
|
|
|
/*---------------------------------------------------------------------------*
|
|
* build S-frame for sending
|
|
*---------------------------------------------------------------------------*/
|
|
struct mbuf *
|
|
i4b_build_s_frame(l2_softc_t *l2sc, crbit_to_nt_t crbit, pbit_t pbit, u_char type)
|
|
{
|
|
struct mbuf *m;
|
|
|
|
if((m = i4b_Dgetmbuf(S_FRAME_LEN)) == NULL)
|
|
return(NULL);
|
|
|
|
PUTSAPI(SAPI_CCP, crbit, m->m_data[OFF_SAPI]);
|
|
|
|
PUTTEI(l2sc->tei, m->m_data[OFF_TEI]);
|
|
|
|
m->m_data[OFF_SRCR] = type;
|
|
|
|
m->m_data[OFF_SNR] = (l2sc->vr << 1) | (pbit & 0x01);
|
|
|
|
return(m);
|
|
}
|
|
|
|
#endif /* NI4BQ921 > 0 */
|