1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
|
/* Copyright (c) 1994, Matthew E. Kimmel. Permission is hereby granted
* to use, copy, modify and distribute this software provided that both
* the copyright notice and this permission notice appear in all copies
* of the software, derivative works or modified versions, and any
* portions thereof.
*
* Questions, comments, bug reports and fixes to kimmel@cs.umass.edu.
*
* $Id: if_el.c,v 1.21 1995/12/15 00:54:10 bde Exp $
*/
/* Except of course for the portions of code lifted from other FreeBSD
* drivers (mainly elread, elget and el_ioctl)
*/
/* 3COM Etherlink 3C501 device driver for FreeBSD */
/* Yeah, I know these cards suck, but you can also get them for free
* really easily...
*/
/* Bugs/possible improvements:
* - Does not currently support DMA
* - Does not currently support multicasts
*/
#include "el.h"
#include "bpfilter.h"
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/errno.h>
#include <sys/ioctl.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/syslog.h>
#include <sys/devconf.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#ifdef INET
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/in_var.h>
#include <netinet/ip.h>
#include <netinet/if_ether.h>
#endif
#ifdef IPX
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
#endif
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#if NBPFILTER > 0
#include <net/bpf.h>
#include <net/bpfdesc.h>
#endif
#include <machine/clock.h>
#include <i386/isa/isa.h>
#include <i386/isa/isa_device.h>
#include <i386/isa/icu.h>
#include <i386/isa/if_elreg.h>
#define ETHER_MIN_LEN 64
#define ETHER_MAX_LEN 1518
/* For debugging convenience */
#ifdef EL_DEBUG
#define dprintf(x) printf x
#else
#define dprintf(x)
#endif
/* el_softc: per line info and status */
static struct el_softc {
struct arpcom arpcom; /* Ethernet common */
u_short el_base; /* Base I/O addr */
caddr_t bpf; /* BPF magic cookie */
char el_pktbuf[EL_BUFSIZ]; /* Frame buffer */
} el_softc[NEL];
/* Prototypes */
static int el_attach(struct isa_device *);
static void el_init(int);
static int el_ioctl(struct ifnet *,int,caddr_t);
static int el_probe(struct isa_device *);
static void el_start(struct ifnet *);
static void el_reset(int);
static void el_watchdog(struct ifnet *);
static void el_stop(int);
static int el_xmit(struct el_softc *,int);
static inline void elread(struct el_softc *,caddr_t,int);
static struct mbuf *elget(caddr_t,int,int,struct ifnet *);
static inline void el_hardreset(int);
/* isa_driver structure for autoconf */
struct isa_driver eldriver = {
el_probe, el_attach, "el"
};
static struct kern_devconf kdc_el[NEL] = { {
0, 0, 0, /* filled in by dev_attach */
"el", 0, { MDDT_ISA, 0, "net" },
isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
&kdc_isa0, /* parent */
0, /* parentdata */
DC_UNCONFIGURED, /* state */
"Ethernet adapter: 3Com 3C501",
DC_CLS_NETIF /* class */
} };
static inline void
el_registerdev(struct isa_device *id)
{
if(id->id_unit)
kdc_el[id->id_unit] = kdc_el[0];
kdc_el[id->id_unit].kdc_unit = id->id_unit;
kdc_el[id->id_unit].kdc_isa = id;
dev_attach(&kdc_el[id->id_unit]);
}
/* Probe routine. See if the card is there and at the right place. */
static int
el_probe(struct isa_device *idev)
{
struct el_softc *sc;
u_short base; /* Just for convenience */
u_char station_addr[ETHER_ADDR_LEN];
int i;
/* Grab some info for our structure */
sc = &el_softc[idev->id_unit];
sc->el_base = idev->id_iobase;
base = sc->el_base;
#ifndef DEV_LKM
el_registerdev(idev);
#endif
/* First check the base */
if((base < 0x280) || (base > 0x3f0)) {
printf("el%d: ioaddr must be between 0x280 and 0x3f0\n",
idev->id_unit);
return(0);
}
/* Now attempt to grab the station address from the PROM
* and see if it contains the 3com vendor code.
*/
dprintf(("Probing 3c501 at 0x%x...\n",base));
/* Reset the board */
dprintf(("Resetting board...\n"));
outb(base+EL_AC,EL_AC_RESET);
DELAY(5);
outb(base+EL_AC,0);
dprintf(("Reading station address...\n"));
/* Now read the address */
for(i=0;i<ETHER_ADDR_LEN;i++) {
outb(base+EL_GPBL,i);
station_addr[i] = inb(base+EL_EAW);
}
dprintf(("Address is %6D\n",station_addr, ":"));
/* If the vendor code is ok, return a 1. We'll assume that
* whoever configured this system is right about the IRQ.
*/
if((station_addr[0] != 0x02) || (station_addr[1] != 0x60)
|| (station_addr[2] != 0x8c)) {
dprintf(("Bad vendor code.\n"));
return(0);
} else {
dprintf(("Vendor code ok.\n"));
/* Copy the station address into the arpcom structure */
bcopy(station_addr,sc->arpcom.ac_enaddr,ETHER_ADDR_LEN);
return(1);
}
}
/* Attach the interface to the kernel data structures. By the time
* this is called, we know that the card exists at the given I/O address.
* We still assume that the IRQ given is correct.
*/
static int
el_attach(struct isa_device *idev)
{
struct el_softc *sc;
struct ifnet *ifp;
struct ifaddr *ifa;
struct sockaddr_dl *sdl;
u_short base;
dprintf(("Attaching el%d...\n",idev->id_unit));
/* Get things pointing to the right places. */
sc = &el_softc[idev->id_unit];
ifp = &sc->arpcom.ac_if;
base = sc->el_base;
/* Now reset the board */
dprintf(("Resetting board...\n"));
el_hardreset(idev->id_unit);
/* Initialize ifnet structure */
ifp->if_unit = idev->id_unit;
ifp->if_name = "el";
ifp->if_mtu = ETHERMTU;
ifp->if_output = ether_output;
ifp->if_start = el_start;
ifp->if_ioctl = el_ioctl;
ifp->if_watchdog = el_watchdog;
ifp->if_flags = (IFF_BROADCAST | IFF_SIMPLEX);
/* Now we can attach the interface */
dprintf(("Attaching interface...\n"));
if_attach(ifp);
kdc_el[idev->id_unit].kdc_state = DC_BUSY;
/* Put the station address in the ifa address list's AF_LINK
* entry, if any.
*/
ifa = ifp->if_addrlist;
while ((ifa != NULL) && (ifa->ifa_addr != NULL) &&
(ifa->ifa_addr->sa_family != AF_LINK))
ifa = ifa->ifa_next;
if((ifa != NULL) && (ifa->ifa_addr != NULL)) {
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
sdl->sdl_type = IFT_ETHER;
sdl->sdl_alen = ETHER_ADDR_LEN;
sdl->sdl_slen = 0;
bcopy(sc->arpcom.ac_enaddr,LLADDR(sdl),ETHER_ADDR_LEN);
}
/* Print out some information for the user */
printf("el%d: 3c501 address %6D\n",idev->id_unit,
sc->arpcom.ac_enaddr, ":");
/* Finally, attach to bpf filter if it is present. */
#if NBPFILTER > 0
dprintf(("Attaching to BPF...\n"));
bpfattach(&sc->bpf,ifp,DLT_EN10MB,sizeof(struct ether_header));
#endif
dprintf(("el_attach() finished.\n"));
return(1);
}
/* This routine resets the interface. */
static void
el_reset(int unit)
{
int s;
dprintf(("elreset()\n"));
s = splimp();
el_stop(unit);
el_init(unit);
splx(s);
}
static void el_stop(int unit)
{
struct el_softc *sc;
sc = &el_softc[unit];
outb(sc->el_base+EL_AC,0);
}
/* Do a hardware reset of the 3c501. Do not call until after el_probe()! */
static inline void el_hardreset(int unit)
{
register struct el_softc *sc;
register int base;
register int j;
sc = &el_softc[unit];
base = sc->el_base;
/* First reset the board */
outb(base+EL_AC,EL_AC_RESET);
DELAY(5);
outb(base+EL_AC,0);
/* Then give it back its ethernet address. Thanks to the mach
* source code for this undocumented goodie...
*/
for(j=0;j<ETHER_ADDR_LEN;j++)
outb(base+j,sc->arpcom.ac_enaddr[j]);
}
/* Initialize interface. */
static void
el_init(int unit)
{
struct el_softc *sc;
struct ifnet *ifp;
int s;
u_short base;
/* Set up pointers */
sc = &el_softc[unit];
ifp = &sc->arpcom.ac_if;
base = sc->el_base;
/* If address not known, do nothing. */
if(ifp->if_addrlist == (struct ifaddr *)0)
return;
s = splimp();
/* First, reset the board. */
dprintf(("Resetting board...\n"));
el_hardreset(unit);
/* Configure rx */
dprintf(("Configuring rx...\n"));
if(ifp->if_flags & IFF_PROMISC)
outb(base+EL_RXC,(EL_RXC_PROMISC|EL_RXC_AGF|EL_RXC_DSHORT|EL_RXC_DDRIB|EL_RXC_DOFLOW));
else
outb(base+EL_RXC,(EL_RXC_ABROAD|EL_RXC_AGF|EL_RXC_DSHORT|EL_RXC_DDRIB|EL_RXC_DOFLOW));
outb(base+EL_RBC,0);
/* Configure TX */
dprintf(("Configuring tx...\n"));
outb(base+EL_TXC,0);
/* Start reception */
dprintf(("Starting reception...\n"));
outb(base+EL_AC,(EL_AC_IRQE|EL_AC_RX));
/* Set flags appropriately */
ifp->if_flags |= IFF_RUNNING;
ifp->if_flags &= ~IFF_OACTIVE;
/* And start output. */
el_start(ifp);
splx(s);
}
/* Start output on interface. Get datagrams from the queue and output
* them, giving the receiver a chance between datagrams. Call only
* from splimp or interrupt level!
*/
static void
el_start(struct ifnet *ifp)
{
struct el_softc *sc;
u_short base;
struct mbuf *m, *m0;
int s, i, len, retries, done;
/* Get things pointing in the right directions */
sc = &el_softc[ifp->if_unit];
base = sc->el_base;
dprintf(("el_start()...\n"));
s = splimp();
/* Don't do anything if output is active */
if(sc->arpcom.ac_if.if_flags & IFF_OACTIVE)
return;
sc->arpcom.ac_if.if_flags |= IFF_OACTIVE;
/* The main loop. They warned me against endless loops, but
* would I listen? NOOO....
*/
while(1) {
/* Dequeue the next datagram */
IF_DEQUEUE(&sc->arpcom.ac_if.if_snd,m0);
/* If there's nothing to send, return. */
if(m0 == NULL) {
sc->arpcom.ac_if.if_flags &= ~IFF_OACTIVE;
splx(s);
return;
}
/* Disable the receiver */
outb(base+EL_AC,EL_AC_HOST);
outb(base+EL_RBC,0);
/* Copy the datagram to the buffer. */
len = 0;
for(m = m0; m != NULL; m = m->m_next) {
if(m->m_len == 0)
continue;
bcopy(mtod(m,caddr_t),sc->el_pktbuf+len,m->m_len);
len += m->m_len;
}
m_freem(m0);
len = max(len,ETHER_MIN_LEN);
/* Give the packet to the bpf, if any */
#if NBPFILTER > 0
if(sc->bpf)
bpf_tap(sc->bpf,sc->el_pktbuf,len);
#endif
/* Transfer datagram to board */
dprintf(("el: xfr pkt length=%d...\n",len));
i = EL_BUFSIZ - len;
outb(base+EL_GPBL,(i & 0xff));
outb(base+EL_GPBH,((i>>8)&0xff));
outsb(base+EL_BUF,sc->el_pktbuf,len);
/* Now transmit the datagram */
retries=0;
done=0;
while(!done) {
if(el_xmit(sc,len)) { /* Something went wrong */
done = -1;
break;
}
/* Check out status */
i = inb(base+EL_TXS);
dprintf(("tx status=0x%x\n",i));
if(!(i & EL_TXS_READY)) {
dprintf(("el: err txs=%x\n",i));
sc->arpcom.ac_if.if_oerrors++;
if(i & (EL_TXS_COLL|EL_TXS_COLL16)) {
if((!(i & EL_TXC_DCOLL16)) && retries < 15) {
retries++;
outb(base+EL_AC,EL_AC_HOST);
}
}
else
done = 1;
}
else {
sc->arpcom.ac_if.if_opackets++;
done = 1;
}
}
if(done == -1) /* Packet not transmitted */
continue;
/* Now give the card a chance to receive.
* Gotta love 3c501s...
*/
(void)inb(base+EL_AS);
outb(base+EL_AC,(EL_AC_IRQE|EL_AC_RX));
splx(s);
/* Interrupt here */
s = splimp();
}
}
/* This function actually attempts to transmit a datagram downloaded
* to the board. Call at splimp or interrupt, after downloading data!
* Returns 0 on success, non-0 on failure
*/
static int el_xmit(struct el_softc *sc,int len)
{
int gpl;
int i;
gpl = EL_BUFSIZ - len;
dprintf(("el: xmit..."));
outb((sc->el_base)+EL_GPBL,(gpl & 0xff));
outb((sc->el_base)+EL_GPBH,((gpl>>8)&0xff));
outb((sc->el_base)+EL_AC,EL_AC_TXFRX);
i = 20000;
while((inb((sc->el_base)+EL_AS) & EL_AS_TXBUSY) && (i>0))
i--;
if(i == 0) {
dprintf(("tx not ready\n"));
sc->arpcom.ac_if.if_oerrors++;
return(-1);
}
dprintf(("%d cycles.\n",(20000-i)));
return(0);
}
/* controller interrupt */
void elintr(int unit)
{
register struct el_softc *sc;
register base;
int stat, rxstat, len, done;
/* Get things pointing properly */
sc = &el_softc[unit];
base = sc->el_base;
dprintf(("elintr: "));
/* Check board status */
stat = inb(base+EL_AS);
if(stat & EL_AS_RXBUSY) {
(void)inb(base+EL_RXC);
outb(base+EL_AC,(EL_AC_IRQE|EL_AC_RX));
return;
}
done = 0;
while(!done) {
rxstat = inb(base+EL_RXS);
if(rxstat & EL_RXS_STALE) {
(void)inb(base+EL_RXC);
outb(base+EL_AC,(EL_AC_IRQE|EL_AC_RX));
return;
}
/* If there's an overflow, reinit the board. */
if(!(rxstat & EL_RXS_NOFLOW)) {
dprintf(("overflow.\n"));
el_hardreset(unit);
/* Put board back into receive mode */
if(sc->arpcom.ac_if.if_flags & IFF_PROMISC)
outb(base+EL_RXC,(EL_RXC_PROMISC|EL_RXC_AGF|EL_RXC_DSHORT|EL_RXC_DDRIB|EL_RXC_DOFLOW));
else
outb(base+EL_RXC,(EL_RXC_ABROAD|EL_RXC_AGF|EL_RXC_DSHORT|EL_RXC_DDRIB|EL_RXC_DOFLOW));
(void)inb(base+EL_AS);
outb(base+EL_RBC,0);
(void)inb(base+EL_RXC);
outb(base+EL_AC,(EL_AC_IRQE|EL_AC_RX));
return;
}
/* Incoming packet */
len = inb(base+EL_RBL);
len |= inb(base+EL_RBH) << 8;
dprintf(("receive len=%d rxstat=%x ",len,rxstat));
outb(base+EL_AC,EL_AC_HOST);
/* If packet too short or too long, restore rx mode and return
*/
if((len <= sizeof(struct ether_header)) || (len > ETHER_MAX_LEN)) {
if(sc->arpcom.ac_if.if_flags & IFF_PROMISC)
outb(base+EL_RXC,(EL_RXC_PROMISC|EL_RXC_AGF|EL_RXC_DSHORT|EL_RXC_DDRIB|EL_RXC_DOFLOW));
else
outb(base+EL_RXC,(EL_RXC_ABROAD|EL_RXC_AGF|EL_RXC_DSHORT|EL_RXC_DDRIB|EL_RXC_DOFLOW));
(void)inb(base+EL_AS);
outb(base+EL_RBC,0);
(void)inb(base+EL_RXC);
outb(base+EL_AC,(EL_AC_IRQE|EL_AC_RX));
return;
}
sc->arpcom.ac_if.if_ipackets++;
/* Copy the data into our buffer */
outb(base+EL_GPBL,0);
outb(base+EL_GPBH,0);
insb(base+EL_BUF,sc->el_pktbuf,len);
outb(base+EL_RBC,0);
outb(base+EL_AC,EL_AC_RX);
dprintf(("%6D-->",sc->el_pktbuf+6,":"));
dprintf(("%6D\n",sc->el_pktbuf,":"));
/* Pass data up to upper levels */
len -= sizeof(struct ether_header);
elread(sc,(caddr_t)(sc->el_pktbuf),len);
/* Is there another packet? */
stat = inb(base+EL_AS);
/* If so, do it all again (i.e. don't set done to 1) */
if(!(stat & EL_AS_RXBUSY))
dprintf(("<rescan> "));
else
done = 1;
}
(void)inb(base+EL_RXC);
outb(base+EL_AC,(EL_AC_IRQE|EL_AC_RX));
return;
}
/* Pass a packet up to the higher levels. */
static inline void elread(struct el_softc *sc,caddr_t buf,int len)
{
register struct ether_header *eh;
struct mbuf *m;
eh = (struct ether_header *)buf;
#if NBPFILTER > 0
/*
* Check if there's a bpf filter listening on this interface.
* If so, hand off the raw packet to bpf.
*/
if(sc->bpf) {
bpf_tap(sc->bpf,buf,len+sizeof(struct ether_header));
/*
* Note that the interface cannot be in promiscuous mode if
* there are no bpf listeners. And if el are in promiscuous
* mode, el have to check if this packet is really ours.
*
* This test does not support multicasts.
*/
if((sc->arpcom.ac_if.if_flags & IFF_PROMISC)
&& bcmp(eh->ether_dhost,sc->arpcom.ac_enaddr,
sizeof(eh->ether_dhost)) != 0
&& bcmp(eh->ether_dhost,etherbroadcastaddr,
sizeof(eh->ether_dhost)) != 0)
return;
}
#endif
/*
* Pull packet off interface.
*/
m = elget(buf,len,0,&sc->arpcom.ac_if);
if(m == 0)
return;
ether_input(&sc->arpcom.ac_if,eh,m);
}
/*
* Pull read data off a interface.
* Len is length of data, with local net header stripped.
*/
struct mbuf *
elget(buf, totlen, off0, ifp)
caddr_t buf;
int totlen, off0;
struct ifnet *ifp;
{
struct mbuf *top, **mp, *m;
int off = off0, len;
register caddr_t cp = buf;
char *epkt;
buf += sizeof(struct ether_header);
cp = buf;
epkt = cp + totlen;
if (off) {
cp += off + 2 * sizeof(u_short);
totlen -= 2 * sizeof(u_short);
}
MGETHDR(m, M_DONTWAIT, MT_DATA);
if (m == 0)
return (0);
m->m_pkthdr.rcvif = ifp;
m->m_pkthdr.len = totlen;
m->m_len = MHLEN;
top = 0;
mp = ⊤
while (totlen > 0) {
if (top) {
MGET(m, M_DONTWAIT, MT_DATA);
if (m == 0) {
m_freem(top);
return (0);
}
m->m_len = MLEN;
}
len = min(totlen, epkt - cp);
if (len >= MINCLSIZE) {
MCLGET(m, M_DONTWAIT);
if (m->m_flags & M_EXT)
m->m_len = len = min(len, MCLBYTES);
else
len = m->m_len;
} else {
/*
* Place initial small packet/header at end of mbuf.
*/
if (len < m->m_len) {
if (top == 0 && len + max_linkhdr <= m->m_len)
m->m_data += max_linkhdr;
m->m_len = len;
} else
len = m->m_len;
}
bcopy(cp, mtod(m, caddr_t), (unsigned)len);
cp += len;
*mp = m;
mp = &m->m_next;
totlen -= len;
if (cp == epkt)
cp = buf;
}
return (top);
}
/*
* Process an ioctl request. This code needs some work - it looks
* pretty ugly.
*/
static int
el_ioctl(ifp, command, data)
register struct ifnet *ifp;
int command;
caddr_t data;
{
register struct ifaddr *ifa = (struct ifaddr *)data;
struct el_softc *sc = &el_softc[ifp->if_unit];
struct ifreq *ifr = (struct ifreq *)data;
int s, error = 0;
s = splimp();
switch (command) {
case SIOCSIFADDR:
ifp->if_flags |= IFF_UP;
switch (ifa->ifa_addr->sa_family) {
#ifdef INET
case AF_INET:
el_init(ifp->if_unit); /* before arpwhohas */
arp_ifinit((struct arpcom *)ifp, ifa);
break;
#endif
#ifdef IPX
/*
* XXX - This code is probably wrong
*/
case AF_IPX:
{
register struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr);
if (ipx_nullhost(*ina))
ina->x_host =
*(union ipx_host *)(sc->arpcom.ac_enaddr);
else {
/*
*
*/
bcopy((caddr_t)ina->x_host.c_host,
(caddr_t)sc->arpcom.ac_enaddr,
sizeof(sc->arpcom.ac_enaddr));
}
/*
* Set new address
*/
el_init(ifp->if_unit);
break;
}
#endif
#ifdef NS
/*
* XXX - This code is probably wrong
*/
case AF_NS:
{
register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr);
if (ns_nullhost(*ina))
ina->x_host =
*(union ns_host *)(sc->arpcom.ac_enaddr);
else {
/*
*
*/
bcopy((caddr_t)ina->x_host.c_host,
(caddr_t)sc->arpcom.ac_enaddr,
sizeof(sc->arpcom.ac_enaddr));
}
/*
* Set new address
*/
el_init(ifp->if_unit);
break;
}
#endif
default:
el_init(ifp->if_unit);
break;
}
break;
case SIOCGIFADDR:
{
struct sockaddr *sa;
sa = (struct sockaddr *)&ifr->ifr_data;
bcopy((caddr_t)sc->arpcom.ac_enaddr,
(caddr_t) sa->sa_data, ETHER_ADDR_LEN);
}
break;
case SIOCSIFFLAGS:
/*
* If interface is marked down and it is running, then stop it
*/
if (((ifp->if_flags & IFF_UP) == 0) &&
(ifp->if_flags & IFF_RUNNING)) {
el_stop(ifp->if_unit);
ifp->if_flags &= ~IFF_RUNNING;
} else {
/*
* If interface is marked up and it is stopped, then start it
*/
if ((ifp->if_flags & IFF_UP) &&
((ifp->if_flags & IFF_RUNNING) == 0))
el_init(ifp->if_unit);
}
break;
case SIOCSIFMTU:
/*
* Set the interface MTU.
*/
if (ifr->ifr_mtu > ETHERMTU) {
error = EINVAL;
} else {
ifp->if_mtu = ifr->ifr_mtu;
}
break;
default:
error = EINVAL;
}
(void) splx(s);
return (error);
}
/* Device timeout routine */
static void
el_watchdog(struct ifnet *ifp)
{
log(LOG_ERR,"el%d: device timeout\n",ifp->if_unit);
ifp->if_oerrors++;
el_reset(ifp->if_unit);
}
|