2 * Copyright (c) 1997, 2001 Hellmuth Michaelis. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
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.
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
25 *---------------------------------------------------------------------------
27 * i4b_rbch.c - device driver for raw B channel data
28 * ---------------------------------------------------
30 * $FreeBSD: src/sys/i4b/driver/i4b_rbch.c,v 1.10.2.3 2001/08/12 16:22:48 hm Exp $
31 * $DragonFly: src/sys/net/i4b/driver/i4b_rbch.c,v 1.22 2006/12/22 23:44:55 swildner Exp $
33 * last edit-date: [Sat Aug 11 18:06:57 2001]
35 *---------------------------------------------------------------------------*/
37 #include "use_i4brbch.h"
41 #include <sys/param.h>
42 #include <sys/systm.h>
46 #include <sys/kernel.h>
48 #include <sys/socket.h>
51 #include <sys/thread2.h>
52 #include <sys/vnode.h>
54 #include <net/i4b/include/machine/i4b_ioctl.h>
55 #include <net/i4b/include/machine/i4b_rbch_ioctl.h>
56 #include <net/i4b/include/machine/i4b_debug.h>
58 #include "../include/i4b_global.h"
59 #include "../include/i4b_mbuf.h"
60 #include "../include/i4b_l3l4.h"
61 #include "../layer4/i4b_l4.h"
63 #include <sys/event.h>
64 #include <sys/filio.h>
66 static drvr_link_t rbch_drvr_linktab[NI4BRBCH];
67 static isdn_link_t *isdn_linktab[NI4BRBCH];
69 #define I4BRBCHACCT 1 /* enable accounting messages */
70 #define I4BRBCHACCTINTVL 2 /* accounting msg interval in secs */
72 static struct rbch_softc {
74 int sc_unit; /* unit number */
76 int sc_devstate; /* state of driver */
78 #define ST_CONNECTED 0x01
79 #define ST_ISOPEN 0x02
80 #define ST_RDWAITDATA 0x04
81 #define ST_WRWAITEMPTY 0x08
82 #define ST_NOBLOCK 0x10
84 int sc_bprot; /* B-ch protocol used */
86 call_desc_t *sc_cd; /* Call Descriptor */
90 struct ifqueue sc_hdlcq; /* hdlc read queue */
91 #define I4BRBCHMAXQLEN 10
93 struct selinfo selp; /* select / poll */
96 struct callout sc_timeout;
98 int sc_iinb; /* isdn driver # of inbytes */
99 int sc_ioutb; /* isdn driver # of outbytes */
100 int sc_linb; /* last # of bytes rx'd */
101 int sc_loutb; /* last # of bytes tx'd */
102 int sc_fn; /* flag, first null acct */
104 } rbch_softc[NI4BRBCH];
106 static void rbch_rx_data_rdy(int unit);
107 static void rbch_tx_queue_empty(int unit);
108 static void rbch_connect(int unit, void *cdp);
109 static void rbch_disconnect(int unit, void *cdp);
110 static void rbch_init_linktab(int unit);
111 static void rbch_clrq(int unit);
113 #define PDEVSTATIC static
114 #define IOCTL_CMD_T u_long
116 PDEVSTATIC d_open_t i4brbchopen;
117 PDEVSTATIC d_close_t i4brbchclose;
118 PDEVSTATIC d_read_t i4brbchread;
119 PDEVSTATIC d_write_t i4brbchwrite;
120 PDEVSTATIC d_ioctl_t i4brbchioctl;
121 PDEVSTATIC d_kqfilter_t i4brbchkqfilter;
123 PDEVSTATIC void i4brbchkfilt_detach(struct knote *);
124 PDEVSTATIC int i4brbchkfilt_read(struct knote *, long);
125 PDEVSTATIC int i4brbchkfilt_write(struct knote *, long);
127 #define CDEV_MAJOR 57
129 static struct dev_ops i4brbch_ops = {
130 { "i4brbch", CDEV_MAJOR, D_KQFILTER },
131 .d_open = i4brbchopen,
132 .d_close = i4brbchclose,
133 .d_read = i4brbchread,
134 .d_write = i4brbchwrite,
135 .d_ioctl = i4brbchioctl,
136 .d_kqfilter = i4brbchkqfilter
139 static void i4brbchattach(void *);
140 PSEUDO_SET(i4brbchattach, i4b_rbch);
142 /*===========================================================================*
143 * DEVICE DRIVER ROUTINES
144 *===========================================================================*/
146 /*---------------------------------------------------------------------------*
147 * interface attach routine
148 *---------------------------------------------------------------------------*/
150 i4brbchattach(void *dummy)
154 #ifndef HACK_NO_PSEUDO_ATTACH_MSG
155 kprintf("i4brbch: %d raw B channel access device(s) attached\n", NI4BRBCH);
158 for(i=0; i < NI4BRBCH; i++)
160 make_dev(&i4brbch_ops, i,
161 UID_ROOT, GID_WHEEL, 0600, "i4brbch%d", i);
164 callout_init(&rbch_softc[i].sc_timeout);
165 rbch_softc[i].sc_fn = 1;
167 rbch_softc[i].sc_unit = i;
168 rbch_softc[i].sc_devstate = ST_IDLE;
169 rbch_softc[i].sc_hdlcq.ifq_maxlen = I4BRBCHMAXQLEN;
170 rbch_softc[i].it_in.c_ispeed = rbch_softc[i].it_in.c_ospeed = 64000;
171 termioschars(&rbch_softc[i].it_in);
172 rbch_init_linktab(i);
176 /*---------------------------------------------------------------------------*
178 *---------------------------------------------------------------------------*/
180 i4brbchopen(struct dev_open_args *ap)
182 cdev_t dev = ap->a_head.a_dev;
183 int unit = minor(dev);
188 if(rbch_softc[unit].sc_devstate & ST_ISOPEN)
195 rbch_softc[unit].sc_devstate |= ST_ISOPEN;
197 NDBGL4(L4_RBCHDBG, "unit %d, open", unit);
202 /*---------------------------------------------------------------------------*
204 *---------------------------------------------------------------------------*/
206 i4brbchclose(struct dev_close_args *ap)
208 cdev_t dev = ap->a_head.a_dev;
209 int unit = minor(dev);
210 struct rbch_softc *sc = &rbch_softc[unit];
212 if(sc->sc_devstate & ST_CONNECTED)
213 i4b_l4_drvrdisc(BDRV_RBCH, unit);
215 sc->sc_devstate &= ~ST_ISOPEN;
219 NDBGL4(L4_RBCHDBG, "unit %d, closed", unit);
224 /*---------------------------------------------------------------------------*
225 * read from rbch device
226 *---------------------------------------------------------------------------*/
228 i4brbchread(struct dev_read_args *ap)
230 cdev_t dev = ap->a_head.a_dev;
231 struct uio *uio = ap->a_uio;
234 int unit = minor(dev);
236 struct rbch_softc *sc = &rbch_softc[unit];
240 NDBGL4(L4_RBCHDBG, "unit %d, enter read", unit);
243 if(!(sc->sc_devstate & ST_ISOPEN))
246 NDBGL4(L4_RBCHDBG, "unit %d, read while not open", unit);
250 if((sc->sc_devstate & ST_NOBLOCK) || (ap->a_ioflag & IO_NDELAY))
252 if(!(sc->sc_devstate & ST_CONNECTED)) {
257 if(sc->sc_bprot == BPROT_RHDLC)
260 iqp = isdn_linktab[unit]->rx_queue;
262 if(IF_QEMPTY(iqp) && (sc->sc_devstate & ST_ISOPEN)) {
269 while(!(sc->sc_devstate & ST_CONNECTED))
271 NDBGL4(L4_RBCHDBG, "unit %d, wait read init", unit);
273 if((error = tsleep((caddr_t) &rbch_softc[unit],
274 PCATCH, "rrrbch", 0 )) != 0)
277 NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep", unit, error);
282 if(sc->sc_bprot == BPROT_RHDLC)
285 iqp = isdn_linktab[unit]->rx_queue;
287 while(IF_QEMPTY(iqp) && (sc->sc_devstate & ST_ISOPEN))
289 sc->sc_devstate |= ST_RDWAITDATA;
291 NDBGL4(L4_RBCHDBG, "unit %d, wait read data", unit);
293 if((error = tsleep((caddr_t) &isdn_linktab[unit]->rx_queue,
294 PCATCH, "rrbch", 0 )) != 0)
297 NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep read", unit, error);
298 sc->sc_devstate &= ~ST_RDWAITDATA;
306 NDBGL4(L4_RBCHDBG, "unit %d, read %d bytes", unit, m->m_len);
310 error = uiomove(m->m_data, m->m_len, uio);
314 NDBGL4(L4_RBCHDBG, "unit %d, error %d uiomove", unit, error);
326 /*---------------------------------------------------------------------------*
327 * write to rbch device
328 *---------------------------------------------------------------------------*/
330 i4brbchwrite(struct dev_write_args *ap)
332 cdev_t dev = ap->a_head.a_dev;
333 struct uio *uio = ap->a_uio;
336 int unit = minor(dev);
337 struct rbch_softc *sc = &rbch_softc[unit];
341 NDBGL4(L4_RBCHDBG, "unit %d, write", unit);
344 if(!(sc->sc_devstate & ST_ISOPEN))
346 NDBGL4(L4_RBCHDBG, "unit %d, write while not open", unit);
351 if((sc->sc_devstate & ST_NOBLOCK) || (ap->a_ioflag & IO_NDELAY))
353 if(!(sc->sc_devstate & ST_CONNECTED)) {
357 if(IF_QFULL(isdn_linktab[unit]->tx_queue) && (sc->sc_devstate & ST_ISOPEN)) {
364 while(!(sc->sc_devstate & ST_CONNECTED))
366 NDBGL4(L4_RBCHDBG, "unit %d, write wait init", unit);
368 error = tsleep((caddr_t) &rbch_softc[unit],
369 PCATCH, "wrrbch", 0 );
370 if(error == ERESTART) {
374 else if(error == EINTR)
377 NDBGL4(L4_RBCHDBG, "unit %d, EINTR during wait init", unit);
383 NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep init", unit, error);
386 tsleep((caddr_t) &rbch_softc[unit], PCATCH, "xrbch", (hz*1));
389 while(IF_QFULL(isdn_linktab[unit]->tx_queue) && (sc->sc_devstate & ST_ISOPEN))
391 sc->sc_devstate |= ST_WRWAITEMPTY;
393 NDBGL4(L4_RBCHDBG, "unit %d, write queue full", unit);
395 if ((error = tsleep((caddr_t) &isdn_linktab[unit]->tx_queue,
396 PCATCH, "wrbch", 0)) != 0) {
397 sc->sc_devstate &= ~ST_WRWAITEMPTY;
398 if(error == ERESTART)
403 else if(error == EINTR)
406 NDBGL4(L4_RBCHDBG, "unit %d, EINTR during wait write", unit);
412 NDBGL4(L4_RBCHDBG, "unit %d, error %d tsleep write", unit, error);
419 if(!(sc->sc_devstate & ST_ISOPEN))
421 NDBGL4(L4_RBCHDBG, "unit %d, not open anymore", unit);
426 if((m = i4b_Bgetmbuf(BCH_MAX_DATALEN)) != NULL)
428 m->m_len = (int)szmin(BCH_MAX_DATALEN, uio->uio_resid);
430 NDBGL4(L4_RBCHDBG, "unit %d, write %d bytes", unit, m->m_len);
432 error = uiomove(m->m_data, (size_t)m->m_len, uio);
434 if(IF_QFULL(isdn_linktab[unit]->tx_queue))
437 IF_ENQUEUE(isdn_linktab[unit]->tx_queue, m);
438 (*isdn_linktab[unit]->bch_tx_start)(isdn_linktab[unit]->unit, isdn_linktab[unit]->channel);
446 /*---------------------------------------------------------------------------*
447 * rbch device ioctl handlibg
448 *---------------------------------------------------------------------------*/
450 i4brbchioctl(struct dev_ioctl_args *ap)
452 cdev_t dev = ap->a_head.a_dev;
454 int unit = minor(dev);
455 struct rbch_softc *sc = &rbch_softc[unit];
459 case FIOASYNC: /* Set async mode */
460 if (*(int *)ap->a_data)
462 NDBGL4(L4_RBCHDBG, "unit %d, setting async mode", unit);
466 NDBGL4(L4_RBCHDBG, "unit %d, clearing async mode", unit);
470 case TIOCCDTR: /* Clear DTR */
471 if(sc->sc_devstate & ST_CONNECTED)
473 NDBGL4(L4_RBCHDBG, "unit %d, disconnecting for DTR down", unit);
474 i4b_l4_drvrdisc(BDRV_RBCH, unit);
478 case I4B_RBCH_DIALOUT:
482 for (l = 0; l < TELNO_MAX && ((char *)ap->a_data)[l]; l++)
486 NDBGL4(L4_RBCHDBG, "unit %d, attempting dialout to %s", unit, (char *)ap->a_data);
487 i4b_l4_dialoutnumber(BDRV_RBCH, unit, l, (char *)ap->a_data);
490 /* fall through to SDTR */
493 case TIOCSDTR: /* Set DTR */
494 NDBGL4(L4_RBCHDBG, "unit %d, attempting dialout (DTR)", unit);
495 i4b_l4_dialout(BDRV_RBCH, unit);
498 case TIOCSETA: /* Set termios struct */
501 case TIOCGETA: /* Get termios struct */
502 *(struct termios *)ap->a_data = sc->it_in;
506 *(int *)ap->a_data = TIOCM_LE|TIOCM_DTR|TIOCM_RTS|TIOCM_CTS|TIOCM_DSR;
507 if (sc->sc_devstate & ST_CONNECTED)
508 *(int *)ap->a_data |= TIOCM_CD;
511 case I4B_RBCH_VR_REQ:
515 mvr = (msg_vr_req_t *)ap->a_data;
517 mvr->version = VERSION;
523 default: /* Unknown stuff */
524 NDBGL4(L4_RBCHDBG, "unit %d, ioctl, unknown cmd %lx", unit, ap->a_cmd);
531 /*---------------------------------------------------------------------------*
533 *---------------------------------------------------------------------------*/
534 static struct filterops i4brbchkfiltops_read =
535 { 1, NULL, i4brbchkfilt_detach, i4brbchkfilt_read };
536 static struct filterops i4brbchkfiltops_write =
537 { 1, NULL, i4brbchkfilt_detach, i4brbchkfilt_write };
540 i4brbchkqfilter(struct dev_kqfilter_args *ap)
542 cdev_t dev = ap->a_head.a_dev;
543 int unit = minor(dev);
544 struct rbch_softc *sc = &rbch_softc[unit];
545 struct knote *kn = ap->a_kn;
550 switch (kn->kn_filter) {
552 kn->kn_fop = &i4brbchkfiltops_read;
553 kn->kn_hook = (caddr_t)dev;
556 kn->kn_fop = &i4brbchkfiltops_write;
557 kn->kn_hook = (caddr_t)dev;
560 ap->a_result = EOPNOTSUPP;
565 klist = &sc->selp.si_note;
566 SLIST_INSERT_HEAD(klist, kn, kn_selnext);
573 i4brbchkfilt_detach(struct knote *kn)
575 cdev_t dev = (cdev_t)kn->kn_hook;
576 int unit = minor(dev);
577 struct rbch_softc *sc = &rbch_softc[unit];
581 klist = &sc->selp.si_note;
582 SLIST_REMOVE(klist, kn, knote, kn_selnext);
587 i4brbchkfilt_read(struct knote *kn, long hint)
589 cdev_t dev = (cdev_t)kn->kn_hook;
590 int unit = minor(dev);
591 struct rbch_softc *sc = &rbch_softc[unit];
596 if (!(sc->sc_devstate & ST_ISOPEN)) {
598 kn->kn_flags |= EV_ERROR;
603 if (sc->sc_devstate & ST_CONNECTED) {
606 if(sc->sc_bprot == BPROT_RHDLC)
609 iqp = isdn_linktab[unit]->rx_queue;
621 i4brbchkfilt_write(struct knote *kn, long hint)
623 cdev_t dev = (cdev_t)kn->kn_hook;
624 int unit = minor(dev);
625 struct rbch_softc *sc = &rbch_softc[unit];
630 if (!(sc->sc_devstate & ST_ISOPEN)) {
632 kn->kn_flags |= EV_ERROR;
638 * Writes are OK if we are connected and the
639 * transmit queue can take them
641 if ((sc->sc_devstate & ST_CONNECTED) &&
642 !IF_QFULL(isdn_linktab[unit]->tx_queue))
653 /*---------------------------------------------------------------------------*
655 *---------------------------------------------------------------------------*/
657 rbch_timeout(struct rbch_softc *sc)
659 bchan_statistics_t bs;
660 int unit = sc->sc_unit;
662 /* get # of bytes in and out from the HSCX driver */
664 (*isdn_linktab[unit]->bch_stat)
665 (isdn_linktab[unit]->unit, isdn_linktab[unit]->channel, &bs);
667 sc->sc_ioutb += bs.outbytes;
668 sc->sc_iinb += bs.inbytes;
670 if((sc->sc_iinb != sc->sc_linb) || (sc->sc_ioutb != sc->sc_loutb) || sc->sc_fn)
672 int ri = (sc->sc_iinb - sc->sc_linb)/I4BRBCHACCTINTVL;
673 int ro = (sc->sc_ioutb - sc->sc_loutb)/I4BRBCHACCTINTVL;
675 if((sc->sc_iinb == sc->sc_linb) && (sc->sc_ioutb == sc->sc_loutb))
680 sc->sc_linb = sc->sc_iinb;
681 sc->sc_loutb = sc->sc_ioutb;
683 i4b_l4_accounting(BDRV_RBCH, unit, ACCT_DURING,
684 sc->sc_ioutb, sc->sc_iinb, ro, ri, sc->sc_ioutb, sc->sc_iinb);
686 callout_reset(&sc->sc_timeout, I4BRBCHACCTINTVL * hz,
687 (void *)rbch_timeout, sc);
689 #endif /* I4BRBCHACCT */
691 /*===========================================================================*
692 * ISDN INTERFACE ROUTINES
693 *===========================================================================*/
695 /*---------------------------------------------------------------------------*
696 * this routine is called from L4 handler at connect time
697 *---------------------------------------------------------------------------*/
699 rbch_connect(int unit, void *cdp)
701 call_desc_t *cd = (call_desc_t *)cdp;
702 struct rbch_softc *sc = &rbch_softc[unit];
704 sc->sc_bprot = cd->bprot;
707 if(sc->sc_bprot == BPROT_RHDLC)
714 callout_reset(&sc->sc_timeout, I4BRBCHACCTINTVL * hz,
715 (void *)rbch_timeout, sc);
718 if(!(sc->sc_devstate & ST_CONNECTED))
720 NDBGL4(L4_RBCHDBG, "unit %d, wakeup", unit);
721 sc->sc_devstate |= ST_CONNECTED;
727 /*---------------------------------------------------------------------------*
728 * this routine is called from L4 handler at disconnect time
729 *---------------------------------------------------------------------------*/
731 rbch_disconnect(int unit, void *cdp)
733 call_desc_t *cd = (call_desc_t *)cdp;
734 struct rbch_softc *sc = &rbch_softc[unit];
740 NDBGL4(L4_RBCHDBG, "rbch%d: channel %d not active",
741 cd->driver_unit, cd->channelid);
747 NDBGL4(L4_RBCHDBG, "unit %d, disconnect", unit);
749 sc->sc_devstate &= ~ST_CONNECTED;
754 i4b_l4_accounting(BDRV_RBCH, unit, ACCT_FINAL,
755 sc->sc_ioutb, sc->sc_iinb, 0, 0, sc->sc_ioutb, sc->sc_iinb);
756 callout_stop(&sc->sc_timeout);
761 /*---------------------------------------------------------------------------*
762 * feedback from daemon in case of dial problems
763 *---------------------------------------------------------------------------*/
765 rbch_dialresponse(int unit, int status, cause_t cause)
769 /*---------------------------------------------------------------------------*
771 *---------------------------------------------------------------------------*/
773 rbch_updown(int unit, int updown)
777 /*---------------------------------------------------------------------------*
778 * this routine is called from the HSCX interrupt handler
779 * when a new frame (mbuf) has been received and is to be put on
781 *---------------------------------------------------------------------------*/
783 rbch_rx_data_rdy(int unit)
785 if(rbch_softc[unit].sc_bprot == BPROT_RHDLC)
789 if((m = *isdn_linktab[unit]->rx_mbuf) == NULL)
792 m->m_pkthdr.len = m->m_len;
794 if(IF_QFULL(&(rbch_softc[unit].sc_hdlcq)))
796 NDBGL4(L4_RBCHDBG, "unit %d: hdlc rx queue full!", unit);
801 IF_ENQUEUE(&(rbch_softc[unit].sc_hdlcq), m);
805 if(rbch_softc[unit].sc_devstate & ST_RDWAITDATA)
807 NDBGL4(L4_RBCHDBG, "unit %d, wakeup", unit);
808 rbch_softc[unit].sc_devstate &= ~ST_RDWAITDATA;
809 wakeup((caddr_t) &isdn_linktab[unit]->rx_queue);
813 NDBGL4(L4_RBCHDBG, "unit %d, NO wakeup", unit);
815 selwakeup(&rbch_softc[unit].selp);
818 /*---------------------------------------------------------------------------*
819 * this routine is called from the HSCX interrupt handler
820 * when the last frame has been sent out and there is no
821 * further frame (mbuf) in the tx queue.
822 *---------------------------------------------------------------------------*/
824 rbch_tx_queue_empty(int unit)
826 if(rbch_softc[unit].sc_devstate & ST_WRWAITEMPTY)
828 NDBGL4(L4_RBCHDBG, "unit %d, wakeup", unit);
829 rbch_softc[unit].sc_devstate &= ~ST_WRWAITEMPTY;
830 wakeup((caddr_t) &isdn_linktab[unit]->tx_queue);
834 NDBGL4(L4_RBCHDBG, "unit %d, NO wakeup", unit);
836 selwakeup(&rbch_softc[unit].selp);
839 /*---------------------------------------------------------------------------*
840 * this routine is called from the HSCX interrupt handler
841 * each time a packet is received or transmitted
842 *---------------------------------------------------------------------------*/
844 rbch_activity(int unit, int rxtx)
846 if (rbch_softc[unit].sc_cd)
847 rbch_softc[unit].sc_cd->last_active_time = SECOND;
848 selwakeup(&rbch_softc[unit].selp);
851 /*---------------------------------------------------------------------------*
852 * clear an hdlc rx queue for a rbch unit
853 *---------------------------------------------------------------------------*/
860 IF_DRAIN(&rbch_softc[unit].sc_hdlcq);
864 /*---------------------------------------------------------------------------*
865 * return this drivers linktab address
866 *---------------------------------------------------------------------------*/
868 rbch_ret_linktab(int unit)
870 rbch_init_linktab(unit);
871 return(&rbch_drvr_linktab[unit]);
874 /*---------------------------------------------------------------------------*
875 * setup the isdn_linktab for this driver
876 *---------------------------------------------------------------------------*/
878 rbch_set_linktab(int unit, isdn_link_t *ilt)
880 isdn_linktab[unit] = ilt;
883 /*---------------------------------------------------------------------------*
884 * initialize this drivers linktab
885 *---------------------------------------------------------------------------*/
887 rbch_init_linktab(int unit)
889 rbch_drvr_linktab[unit].unit = unit;
890 rbch_drvr_linktab[unit].bch_rx_data_ready = rbch_rx_data_rdy;
891 rbch_drvr_linktab[unit].bch_tx_queue_empty = rbch_tx_queue_empty;
892 rbch_drvr_linktab[unit].bch_activity = rbch_activity;
893 rbch_drvr_linktab[unit].line_connected = rbch_connect;
894 rbch_drvr_linktab[unit].line_disconnected = rbch_disconnect;
895 rbch_drvr_linktab[unit].dial_response = rbch_dialresponse;
896 rbch_drvr_linktab[unit].updown_ind = rbch_updown;
899 /*===========================================================================*/
901 #endif /* NI4BRBCH > 0 */