Remove ISDN4BSD (I4B) from HEAD as it is not MPSAFE and

parts relied on the now removed NET_NEEDS_GIANT.
Most of I4B has been disconnected from the build
since July 2007 in HEAD/RELENG_7.

This is what was removed:
- configuration in /etc/isdn
- examples
- man pages
- kernel configuration
- sys/i4b (drivers, layers, include files)
- user space tools
- i4b support from ppp
- further documentation

Discussed with: rwatson, re

1 files changed, 0 insertions, 510 deletions

diff --git a/sys/i4b/layer1/ihfc/i4b_ihfc_l1if.c b/sys/i4b/layer1/ihfc/i4b_ihfc_l1if.c
deleted file mode 100644
index 2ed4c46..0000000
--- a/sys/i4b/layer1/ihfc/i4b_ihfc_l1if.c
+++ /dev/null
@@ -1,510 +0,0 @@
-/*-
- * Copyright (c) 2000 Hans Petter Selasky. 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_ihfc_l1.c - hfc layer 1 handler
- *	-----------------------------------
- *	The idea of this file is to separate hfcs/sp/pci data/signal
- *	handling and the I4B data/signal handling.
- *
- *	Everything which has got anything to do with I4B has been put here!
- *
- *      last edit-date: [Wed Jul 19 09:41:03 2000]
- *      $Id: i4b_ihfc_l1if.c,v 1.10 2000/09/19 13:50:36 hm Exp $
- *
- *---------------------------------------------------------------------------*/
-
-#include <sys/cdefs.h>
-__FBSDID("$FreeBSD$");
-
-#include <sys/param.h>
-#include <sys/kernel.h>
-#include <sys/systm.h>
-#include <sys/mbuf.h>
-#include <sys/socket.h>
-
-#include <net/if.h>
-
-#include <i4b/include/i4b_debug.h>
-#include <i4b/include/i4b_ioctl.h>
-#include <i4b/include/i4b_trace.h>
-
-#include <i4b/include/i4b_mbuf.h>
-#include <i4b/include/i4b_global.h>
-
-#include <i4b/layer1/i4b_l1.h>
-#include <i4b/layer1/ihfc/i4b_ihfc.h>
-#include <i4b/layer1/ihfc/i4b_ihfc_ext.h>
-
-/*---------------------------------------------------------------------------*
- *	Local prototypes
- *
- *	NOTE: The prototypes for get/putmbuf and B_linkinit 
- *		have been put in i4b_hfc_ext.h for global hfc use.
- *
- *	NOTE: channel != chan
- *---------------------------------------------------------------------------*/
-static
-isdn_link_t   * ihfc_B_ret_linktab   (int unit, int channel);
-static 	void	ihfc_B_set_linktab   (int unit, int channel, drvr_link_t *B_linktab);
-
-static 	void	ihfc_B_start         (int unit, int chan);
-static 	void	ihfc_B_stat          (int unit, int chan, bchan_statistics_t *bsp);
-	void	ihfc_B_setup         (int unit, int chan, int bprot, int activate);
-
-static	int	ihfc_mph_command_req (int unit, int command, void *parm);
-
-static	int	ihfc_ph_activate_req (int unit);
-static	int	ihfc_ph_data_req     (int unit, struct mbuf *m, int freeflag);
-
-static  void	ihfc_T3_expired      (ihfc_sc_t *sc);
-
-/*---------------------------------------------------------------------------*
- *	Our I4B L1 mulitplexer link
- *---------------------------------------------------------------------------*/
-struct i4b_l1mux_func ihfc_l1mux_func = {
-	ihfc_B_ret_linktab,
-	ihfc_B_set_linktab,
-	ihfc_mph_command_req,
-	ihfc_ph_data_req,
-	ihfc_ph_activate_req,
-};
-
-/*---------------------------------------------------------------------------*
- *	L2 -> L1: PH-DATA-REQUEST (D-Channel)
- *
- *	NOTE: We may get called here from ihfc_hdlc_Dread or isac_hdlc_Dread
- *	via the upper layers.
- *---------------------------------------------------------------------------*/
-static int
-ihfc_ph_data_req(int unit, struct mbuf *m, int freeflag)
-{
-	ihfc_sc_t *sc = &ihfc_softc[unit];
-	u_char chan = 0;
-	HFC_VAR;
-
-	if (!m) return 0;
-
-	HFC_BEG;
-
-	if(S_PHSTATE != 3)
-	{
-		NDBGL1(L1_PRIM, "L1 was not running: "
-			"ihfc_ph_activate_req(unit = %d)!", unit);
-
-			ihfc_ph_activate_req(unit);
-	}
-
-	/* "Allow" I-frames (-hp) */
-
-	if (freeflag == MBUF_DONTFREE)	m = m_copypacket(m, M_DONTWAIT);
-
-	if (!_IF_QFULL(&S_IFQUEUE) && m)
-	{
-		IF_ENQUEUE(&S_IFQUEUE, m);
-
-		ihfc_B_start(unit, chan);	/* (recycling) */
-	}
-	else
-	{
-		NDBGL1(L1_ERROR, "No frame out (unit = %d)", unit);
-		if (m) i4b_Dfreembuf(m);
-
-		HFC_END;
-		return 0;
-	}
-
-	if (S_INTR_ACTIVE) S_INT_S1 |= 0x04;
-
-	HFC_END;
-
-	return 1;
-}
-
-/*---------------------------------------------------------------------------*
- *	L2 -> L1: PH-ACTIVATE-REQUEST (B-channel and D-channel)
- *---------------------------------------------------------------------------*/
-static int
-ihfc_ph_activate_req(int unit)
-{
-	ihfc_sc_t *sc = &ihfc_softc[unit];
-	HFC_VAR;
-
-	HFC_BEG;
-
-	if ((!S_STM_T3) && (S_PHSTATE != 3))
-	{
-		HFC_FSM(sc, 1);
-
-		S_STM_T3 = 1;
-		S_STM_T3CALLOUT = timeout((TIMEOUT_FUNC_T)
-					ihfc_T3_expired, (ihfc_sc_t *)sc,
-					IHFC_ACTIVATION_TIMEOUT);
-	}
-
-	HFC_END;
-	return 0;
-}
-/*---------------------------------------------------------------------------*
- *	T3 timeout - persistant deactivation
- *---------------------------------------------------------------------------*/
-static void
-ihfc_T3_expired(ihfc_sc_t *sc)
-{
-	u_char chan = 0;
-	HFC_VAR;
-
-	HFC_BEG;
-
-	S_STM_T3 = 0;
-
-	if (S_PHSTATE != 3)	/* line was not activated */
-	{
-		i4b_Dcleanifq(&S_IFQUEUE);
-		i4b_l1_ph_deactivate_ind(S_I4BUNIT);
-
-		i4b_l1_mph_status_ind(S_I4BUNIT, STI_PDEACT, 0, 0);
-
-		HFC_FSM(sc, 2);		/* L1 deactivate */
-	}
-
-	HFC_END;
-}
-
-/*---------------------------------------------------------------------------*
- *	Command from the upper layers (B-channel and D-channel)
- *---------------------------------------------------------------------------*/
-static int
-ihfc_mph_command_req(int unit, int command, void *parm)
-{
-	ihfc_sc_t *sc = &ihfc_softc[unit];
-
-	switch(command)
-	{
-		case CMR_DOPEN:		/* daemon running */
-			NDBGL1(L1_PRIM,
-				"unit %d, command = CMR_DOPEN", unit);
-			S_ENABLED = 1;
-			break;
-			
-		case CMR_DCLOSE:	/* daemon not running */
-			NDBGL1(L1_PRIM,
-				"unit %d, command = CMR_DCLOSE", unit);
-			S_ENABLED = 0;
-			break;
-
-		case CMR_SETTRACE:	/* set new trace mask */
-			NDBGL1(L1_PRIM,
-				"unit %d, command = CMR_SETTRACE, parm = %d",
-				unit, (unsigned int)parm);
-			S_TRACE = (unsigned int)parm;
-			break;
-
-		case CMR_GCST:		/* get chip statistic */
-			NDBGL1(L1_PRIM,
-				"unit %d, command = CMR_GCST, parm = %d",
-				unit, (unsigned int)parm);
-
-			#define CST ((struct chipstat *)parm)
-
-			CST->driver_type = L1DRVR_IHFC;
-
-			/* XXX CST->xxxx_stat = xxx; */
-
-			#undef CST
-			break;
-
-		default:
-			NDBGL1(L1_ERROR, 
-				"ERROR, unknown command = %d, unit = %d, parm = %d",
-				command, unit, (unsigned int)parm);
-			break;
-	}
-
-	return 0;
-}
-
-/*---------------------------------------------------------------------------*
- *	Data source switch for Read channels - 1, 3 and 5 (B and D-Channel)
- *---------------------------------------------------------------------------*/
-void
-ihfc_putmbuf (ihfc_sc_t *sc, u_char chan, struct mbuf *m)
-{
-	i4b_trace_hdr_t hdr;
-
-	if (chan < 2)
-	{
-		if(S_TRACE & TRACE_D_RX)
-		{
-			hdr.count = ++S_DTRACECOUNT;
-			hdr.dir   = FROM_NT;
-			hdr.type  = TRC_CH_D;
-			hdr.unit  = S_I4BUNIT;
-
-			MICROTIME(hdr.time);
-
-			i4b_l1_trace_ind(&hdr, m->m_len, m->m_data);
-		}
-
-		if (!S_ENABLED) { i4b_Dfreembuf(m); return; }
-
-		m->m_pkthdr.len = m->m_len;
-	
-		i4b_l1_ph_data_ind(S_I4BUNIT, m);
-	}
-	else
-	{
-		if(S_TRACE & TRACE_B_RX)
-		{
-			hdr.count = ++S_BTRACECOUNT;
-			hdr.dir   = FROM_NT;
-			hdr.type  = (chan < 4) ? TRC_CH_B1 : TRC_CH_B2;
-			hdr.unit  = S_I4BUNIT;
-
-			MICROTIME(hdr.time);
-
-			i4b_l1_trace_ind(&hdr, m->m_len, m->m_data);
-		}
-
-		if (!S_ENABLED) { i4b_Bfreembuf(m); return; }
-
-		if (S_PROT == BPROT_NONE)
-		{
-			if(!i4b_l1_bchan_tel_silence(m->m_data, m->m_len))
-			{
-				S_BDRVLINK->bch_activity(S_BDRVLINK->unit, ACT_RX);
-			}
-
-			if (!_IF_QFULL(&S_IFQUEUE))
-			{
-				S_BYTES += m->m_len;
-				IF_ENQUEUE(&S_IFQUEUE, m);
-				S_BDRVLINK->bch_rx_data_ready(S_BDRVLINK->unit);
-			}
-
-			return;
-		}
-
-		if (S_PROT == BPROT_RHDLC)
-		{
-			S_MBUFDUMMY = m;
-			S_BYTES    += m->m_pkthdr.len = m->m_len;
-			S_BDRVLINK->bch_rx_data_ready(S_BDRVLINK->unit);
-			S_MBUFDUMMY = NULL;
-
-			return;
-		}
-
-		NDBGL1(L1_ERROR, "Unknown protocol: %d", S_PROT);
-	}
-}
-
-/*---------------------------------------------------------------------------*
- *	Data destinator switch for write channels - 0, 2 and 4
- *---------------------------------------------------------------------------*/
-struct mbuf *
-ihfc_getmbuf (ihfc_sc_t *sc, u_char chan)
-{
-	register struct mbuf  *m;
-	i4b_trace_hdr_t hdr;
-
-	if (chan < 2)
-	{
-		IF_DEQUEUE(&S_IFQUEUE, m);
-
-		if((S_TRACE & TRACE_D_TX) && m)
-		{
-			hdr.count = ++S_DTRACECOUNT;
-			hdr.dir   = FROM_TE;
-			hdr.type  = TRC_CH_D;
-			hdr.unit  = S_I4BUNIT;
-
-			MICROTIME(hdr.time);
-
-			i4b_l1_trace_ind(&hdr, m->m_len, m->m_data);
-		}
-	}
-	else
-	{
-		IF_DEQUEUE(&S_IFQUEUE, m);
-
-		if (!m)
-		{
-			S_BDRVLINK->bch_tx_queue_empty(S_BDRVLINK->unit);
-
-			IF_DEQUEUE(&S_IFQUEUE, m);
-		}
-		if (m)
-		{
-		 	if(!i4b_l1_bchan_tel_silence(m->m_data, m->m_len))
-			{
-				S_BDRVLINK->bch_activity(S_BDRVLINK->unit, ACT_TX);
-			}
-
-			S_BYTES += m->m_len;
-
-			if(S_TRACE & TRACE_B_TX)
-			{
-				hdr.count = ++S_BTRACECOUNT;
-				hdr.dir   = FROM_TE;
-				hdr.type  = (chan < 4) ? TRC_CH_B1 : TRC_CH_B2;
-				hdr.unit  = S_I4BUNIT;
-
-				MICROTIME(hdr.time);
-
-				i4b_l1_trace_ind(&hdr, m->m_len, m->m_data);
-			}
-		}
-	}
-
-	return(m);
-}
-
-/*---------------------------------------------------------------------------*
- *	Initialize rx/tx data structures (B-channel)
- *---------------------------------------------------------------------------*/
-void
-ihfc_B_setup(int unit, int chan, int bprot, int activate)
-{
-	ihfc_sc_t *sc = &ihfc_softc[unit];
-	HFC_VAR;
-
-	if (((u_int)chan > 5) || ((u_int)chan < 2)) return;
-
-	HFC_BEG;
-
-	HFC_INIT(sc, chan, bprot, activate);
-
-	HFC_END;
-}
-
-/*---------------------------------------------------------------------------*
- *	Start transmission (B-channel or D-channel tx)
- *	NOTE: if "chan" variable is corrupted, it will not cause any harm,
- *	but data may be lost and there may be software sync. errors.
- *---------------------------------------------------------------------------*/
-static void
-ihfc_B_start(int unit, int chan)
-{
-	ihfc_sc_t *sc = &ihfc_softc[unit];
-	HFC_VAR;
-
-	if ((u_int)chan > 5) return;
-
-	HFC_BEG;
-
-	if (S_FILTER && !S_MBUF && !S_INTR_ACTIVE)
-	{
-		S_INTR_ACTIVE |= 2;	/* never know what *
-                                         * they put in the *
-                                         * L2 code         */
-
-		S_FILTER(sc, chan);	/* quick tx */
-
-		S_INTR_ACTIVE &= ~2;
-	}
-
-	HFC_END;
-}
-
-/*---------------------------------------------------------------------------*
- *	Fill statistics struct (B-channel)
- *---------------------------------------------------------------------------*/
-static void
-ihfc_B_stat(int unit, int chan, bchan_statistics_t *bsp)
-{
-	ihfc_sc_t *sc = &ihfc_softc[unit];
-	HFC_VAR;
-
-	if ((u_int)chan > 5) return;
-
-	chan &= ~1;
-
-	HFC_BEG;
-
-	bsp->inbytes  = S_BYTES; S_BYTES = 0;
-
-	chan++;
-
-	bsp->outbytes = S_BYTES; S_BYTES = 0;
-
-	HFC_END;
-}
-
-/*---------------------------------------------------------------------------*
- *	Return the address of IHFC linktab to I4B (B-channel)
- *---------------------------------------------------------------------------*/
-static isdn_link_t *
-ihfc_B_ret_linktab(int unit, int channel)
-{
-	ihfc_sc_t *sc = &ihfc_softc[unit];
-
-	if (channel < 2)
-		return(&sc->sc_blinktab[channel]);
-	else
-		return 0;
-}
- 
-/*---------------------------------------------------------------------------*
- *	Set the I4B driver linktab for IHFC use (B-channel)
- *---------------------------------------------------------------------------*/
-static void
-ihfc_B_set_linktab(int unit, int channel, drvr_link_t *B_linktab)
-{
-	ihfc_sc_t *sc = &ihfc_softc[unit];
-
-	if (channel < 2)
-		sc->sc_bdrvlinktab[channel] = B_linktab;
-}
-
-/*---------------------------------------------------------------------------*
- *	Initialize linktab for I4B use (B-channel)
- *---------------------------------------------------------------------------*/
-void
-ihfc_B_linkinit(ihfc_sc_t *sc)
-{
-	u_char chan;
-
-	/* make sure the hardware driver is known to layer 4 */
-	ctrl_types[CTRL_PASSIVE].set_linktab = i4b_l1_set_linktab;
-	ctrl_types[CTRL_PASSIVE].get_linktab = i4b_l1_ret_linktab;
-
-	for (chan = 2; chan < 6; chan++)
-	{
-		S_BLINK.unit          = S_UNIT;
-		S_BLINK.channel       = chan;		/* point to tx-chan */
-		S_BLINK.bch_config    = ihfc_B_setup;
-		S_BLINK.bch_tx_start  = ihfc_B_start;
-		S_BLINK.bch_stat      = ihfc_B_stat;
-		
-		/* This is a transmit channel (even) */
-		S_BLINK.tx_queue   = &S_IFQUEUE;
-		chan++;
-		/* This is a receive channel (odd) */
-		S_BLINK.rx_queue   = &S_IFQUEUE;
-		S_BLINK.rx_mbuf    = &S_MBUFDUMMY;
-	}
-}