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c906108c SS |
1 | /* |
2 | * Copyright (C) 1995 Advanced RISC Machines Limited. All rights reserved. | |
3 | * | |
4 | * This software may be freely used, copied, modified, and distributed | |
5 | * provided that the above copyright notice is preserved in all copies of the | |
6 | * software. | |
7 | */ | |
8 | ||
9 | /* -*-C-*- | |
10 | * | |
11 | * $Revision$ | |
12 | * $Date$ | |
13 | * | |
14 | * | |
15 | * etherdrv.c - Ethernet Driver for Angel. | |
16 | */ | |
17 | ||
18 | #ifdef __hpux | |
19 | # define _POSIX_SOURCE 1 | |
20 | # define _HPUX_SOURCE 1 | |
21 | # define _XOPEN_SOURCE 1 | |
22 | #endif | |
23 | ||
24 | #include <stdio.h> | |
25 | #ifdef __hpux | |
26 | # define uint hide_HPs_uint | |
27 | #endif | |
28 | #ifdef STDC_HEADERS | |
29 | # include <unistd.h> | |
30 | # ifdef __hpux | |
31 | # undef uint | |
32 | # endif | |
33 | #endif | |
34 | #include <stdlib.h> | |
35 | #include <string.h> | |
36 | #ifdef __hpux | |
37 | # define uint hide_HPs_uint | |
38 | #endif | |
39 | #include <fcntl.h> | |
40 | #ifdef __hpux | |
41 | # undef uint | |
42 | #endif | |
43 | #include <errno.h> | |
44 | #include <stdarg.h> | |
45 | #include <ctype.h> | |
46 | #include "host.h" | |
47 | ||
48 | #ifdef COMPILING_ON_WINDOWS | |
49 | typedef char * caddr_t; | |
50 | # undef IGNORE | |
51 | # include <winsock.h> | |
52 | # include "angeldll.h" | |
53 | #else | |
54 | # ifdef __hpux | |
55 | # define uint hide_HPs_uint | |
56 | # endif | |
57 | # include <sys/types.h> | |
58 | # include <sys/socket.h> | |
59 | # ifdef __hpux | |
60 | # undef uint | |
61 | # endif | |
62 | # include <netdb.h> | |
63 | # include <sys/time.h> | |
64 | # include <sys/ioctl.h> | |
65 | # ifdef HAVE_SYS_FILIO_H | |
66 | # include <sys/filio.h> | |
67 | # endif | |
68 | # include <netinet/in.h> | |
69 | # include <arpa/inet.h> | |
70 | #endif | |
71 | ||
72 | #include "hsys.h" | |
73 | #include "devices.h" | |
74 | #include "endian.h" | |
75 | #include "buffers.h" | |
76 | #include "hostchan.h" | |
77 | #include "params.h" | |
78 | #include "logging.h" | |
79 | #include "ethernet.h" | |
80 | ||
81 | ||
82 | #if !defined(COMPILING_ON_WINDOWS) && !defined(STDC_HEADERS) | |
83 | /* These two might not work for windows. */ | |
84 | extern int sys_nerr; | |
85 | extern char * sys_errlist[]; | |
86 | #endif | |
87 | ||
88 | #ifndef UNUSED | |
89 | # define UNUSED(x) (x = x) /* Silence compiler warnings */ | |
90 | #endif | |
91 | ||
92 | /* | |
93 | * forward declarations of static functions | |
94 | */ | |
95 | static int EthernetOpen(const char *name, const char *arg); | |
96 | static int EthernetMatch(const char *name, const char *arg); | |
97 | static void EthernetClose(void); | |
98 | static int EthernetRead(DriverCall *dc, bool block); | |
99 | static int EthernetWrite(DriverCall *dc); | |
100 | static int EthernetIoctl(const int opcode, void *args); | |
101 | ||
102 | /* | |
103 | * the device descriptor for Ethernet | |
104 | */ | |
105 | DeviceDescr angel_EthernetDevice = | |
106 | { | |
107 | "Ethernet", | |
108 | EthernetOpen, | |
109 | EthernetMatch, | |
110 | EthernetClose, | |
111 | EthernetRead, | |
112 | EthernetWrite, | |
113 | EthernetIoctl | |
114 | }; | |
115 | ||
116 | /* | |
117 | * descriptor for the socket that we talk down | |
118 | */ | |
119 | static int sock = -1; | |
120 | ||
121 | /* | |
122 | * address of the remote target | |
123 | */ | |
124 | static struct sockaddr_in remote, *ia = &remote; | |
125 | ||
126 | /* | |
127 | * array of dynamic port numbers on target | |
128 | */ | |
129 | static unsigned short int ports[2]; | |
130 | ||
131 | /* | |
132 | * Function: set_address | |
133 | * Purpose: Try to get an address into an understandable form | |
134 | * | |
135 | * Params: | |
136 | * Input: addr The address to parse | |
137 | * | |
138 | * Output: ia Structure to hold the parsed address | |
139 | * | |
140 | * Returns: | |
141 | * OK: 0 | |
142 | * Error: -1 | |
143 | */ | |
144 | static int set_address(const char *const addr, struct sockaddr_in *const ia) | |
145 | { | |
146 | ia->sin_family = AF_INET; | |
147 | ||
148 | /* | |
149 | * Try address as a dotted decimal | |
150 | */ | |
151 | ia->sin_addr.s_addr = inet_addr(addr); | |
152 | ||
153 | /* | |
154 | * If that failed, try it as a hostname | |
155 | */ | |
156 | if (ia->sin_addr.s_addr == (u_int)-1) | |
157 | { | |
158 | struct hostent *hp = gethostbyname(addr); | |
159 | ||
160 | if (hp == NULL) | |
161 | return -1; | |
162 | ||
163 | (void)memcpy((caddr_t)&ia->sin_addr, hp->h_addr, hp->h_length); | |
164 | } | |
165 | ||
166 | return 0; | |
167 | } | |
168 | ||
169 | /* | |
170 | * Function: open_socket | |
171 | * Purpose: Open a non-blocking UDP socket, and bind it to a port | |
172 | * assigned by the system. | |
173 | * | |
174 | * Params: None | |
175 | * | |
176 | * Returns: | |
177 | * OK: socket descriptor | |
178 | * Error: -1 | |
179 | */ | |
180 | static int open_socket(void) | |
181 | { | |
182 | int sfd; | |
183 | #if 0 /* see #if 0 just below -VVV- */ | |
184 | int yesplease = 1; | |
185 | #endif | |
186 | struct sockaddr_in local; | |
187 | ||
188 | /* | |
189 | * open the socket | |
190 | */ | |
191 | #ifdef COMPILING_ON_WINDOWS | |
192 | if ((sfd = socket(AF_INET, SOCK_DGRAM, 0)) == INVALID_SOCKET) | |
193 | return -1; | |
194 | #else | |
195 | if ((sfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) | |
196 | { | |
197 | # ifdef DEBUG | |
198 | perror("socket"); | |
199 | # endif | |
200 | return -1; | |
201 | } | |
202 | #endif | |
203 | ||
204 | /* | |
205 | * 960731 KWelton | |
206 | * | |
207 | * I don't believe that this should be necessary - if we | |
208 | * use select(), then non-blocking I/O is redundant. | |
209 | * Unfortunately, select() appears to be broken (under | |
210 | * Solaris, with a limited amount of time available for | |
211 | * debug), so this code stays in for the time being | |
212 | */ | |
213 | #if 0 | |
214 | /* | |
215 | * enable non-blocking I/O | |
216 | */ | |
217 | if (ioctlsocket(sfd, FIONBIO, &yesplease) < 0) | |
218 | { | |
219 | # ifdef DEBUG | |
220 | perror("ioctl(FIONBIO)"); | |
221 | # endif | |
222 | closesocket(sfd); | |
223 | ||
224 | return -1; | |
225 | } | |
226 | #endif /* 0/1 */ | |
227 | ||
228 | /* | |
229 | * bind local address to a system-assigned port | |
230 | */ | |
231 | memset((char *)&local, 0, sizeof(local)); | |
232 | local.sin_family = AF_INET; | |
233 | local.sin_port = htons(0); | |
234 | local.sin_addr.s_addr = INADDR_ANY; | |
235 | if (bind(sfd, (struct sockaddr *)&local, sizeof(local)) < 0) | |
236 | { | |
237 | #ifdef DEBUG | |
238 | perror("bind"); | |
239 | #endif | |
240 | closesocket(sfd); | |
241 | ||
242 | return -1; | |
243 | } | |
244 | ||
245 | /* | |
246 | * all done | |
247 | */ | |
248 | return sfd; | |
249 | } | |
250 | ||
251 | /* | |
252 | * Function: fetch_ports | |
253 | * Purpose: Request assigned port numbers from remote target | |
254 | * | |
255 | * Params: None | |
256 | * | |
257 | * Returns: Nothing | |
258 | * | |
259 | * Post-conditions: This routine will *always* return something for the | |
260 | * port numbers. If the remote target does not | |
261 | * respond, then it makes something up - this allows | |
262 | * the standard error message (from ardi.c) to be | |
263 | * generated when the target is dead for whatever | |
264 | * reason. | |
265 | */ | |
266 | static void fetch_ports(void) | |
267 | { | |
268 | int i; | |
269 | const char ctrlpacket[] = CTRL_MAGIC; | |
270 | CtrlResponse response; | |
271 | ||
272 | /* | |
273 | * we will try 3 times to elicit a response from the target | |
274 | */ | |
275 | for (i = 0; i < 3; ++i) | |
276 | { | |
277 | struct timeval tv; | |
278 | fd_set fdset; | |
279 | ||
280 | /* | |
281 | * send the magic string to the control | |
282 | * port on the remote target | |
283 | */ | |
284 | ia->sin_port = htons(CTRL_PORT); | |
285 | if (sendto(sock, ctrlpacket, sizeof(ctrlpacket), 0, | |
286 | (struct sockaddr *)ia, sizeof(*ia)) < 0) | |
287 | { | |
288 | #ifdef DEBUG | |
289 | perror("fetch_ports: sendto"); | |
290 | #endif | |
291 | return; | |
292 | } | |
293 | ||
294 | FD_ZERO(&fdset); | |
295 | FD_SET(sock, &fdset); | |
296 | tv.tv_sec = 0; | |
297 | tv.tv_usec = 250000; | |
298 | ||
299 | if (select(sock + 1, &fdset, NULL, NULL, &tv) < 0) | |
300 | { | |
301 | #ifdef DEBUG | |
302 | perror("fetch_ports: select"); | |
303 | #endif | |
304 | return; | |
305 | } | |
306 | ||
307 | if (FD_ISSET(sock, &fdset)) | |
308 | { | |
309 | /* | |
310 | * there is something there - read it | |
311 | */ | |
312 | if (recv(sock, (char *)&response, sizeof(response), 0) < 0) | |
313 | { | |
314 | #ifdef COMPILING_ON_WINDOWS | |
315 | unsigned int werrno = WSAGetLastError(); | |
316 | ||
317 | if (werrno == WSAEWOULDBLOCK || werrno == 0) | |
318 | #else | |
319 | if (errno == EWOULDBLOCK) | |
320 | #endif | |
321 | { | |
322 | --i; | |
323 | continue; | |
324 | } | |
325 | else | |
326 | { | |
327 | #ifdef DEBUG | |
328 | perror("fetch_ports: recv"); | |
329 | #endif | |
330 | return; | |
331 | } | |
332 | } | |
333 | { | |
334 | /* | |
335 | * XXX | |
336 | * | |
337 | * this is *very* unpleasant - try to match the structure | |
338 | * layout | |
339 | */ | |
340 | unsigned short *sptr = (unsigned short *)(response + RESP_DBUG); | |
341 | ||
342 | if (strcmp(response, ctrlpacket) == 0) | |
343 | { | |
344 | ports[DBUG_INDEX] = htons(*sptr); | |
345 | sptr++; | |
346 | ports[APPL_INDEX] = htons(*sptr); | |
347 | } | |
348 | ||
349 | #ifdef DEBUG | |
350 | printf("fetch_ports: got response, DBUG=%d, APPL=%d\n", | |
351 | ports[DBUG_INDEX], ports[APPL_INDEX]); | |
352 | #endif | |
353 | return; | |
354 | } | |
355 | } | |
356 | } | |
357 | ||
358 | /* | |
359 | * we failed to get a response | |
360 | */ | |
361 | #ifdef DEBUG | |
362 | printf("fetch_ports: failed to get a real answer\n"); | |
363 | #endif | |
364 | } | |
365 | ||
366 | /* | |
367 | * Function: read_packet | |
368 | * Purpose: read a packet, and pass it back to higher levels | |
369 | * | |
370 | * Params: | |
371 | * In/Out: packet Holder for the read packet | |
372 | * | |
373 | * Returns: 1 - Packet is complete | |
374 | * 0 - No complete packet read | |
375 | * | |
376 | * Post-conditions: Will call panic() if something goes wrong with the OS | |
377 | */ | |
378 | static int read_packet(struct data_packet *const packet) | |
379 | { | |
380 | struct sockaddr_in from; | |
381 | int nbytes, fromlen = sizeof(from); | |
382 | DevChanID devchan; | |
383 | ||
384 | /* | |
385 | * try to get the packet | |
386 | */ | |
387 | if ((nbytes = recvfrom(sock, (char *)(packet->data), packet->buf_len, 0, | |
388 | (struct sockaddr *)&from, &fromlen)) < 0) | |
389 | { | |
390 | #ifdef COMPILING_ON_WINDOWS | |
391 | if (nbytes == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) | |
392 | MessageBox(GetFocus(), "Error receiving packet\n", "Angel", MB_OK | MB_ICONSTOP); | |
393 | #else | |
394 | if (errno != EWOULDBLOCK) | |
395 | { | |
396 | # ifdef DEBUG | |
397 | perror("recv"); | |
398 | # endif | |
399 | panic("ethernet recv failure"); | |
400 | } | |
401 | #endif | |
402 | return 0; | |
403 | } | |
404 | ||
405 | #ifdef COMPILING_ON_WINDOWS | |
406 | if (pfnProgressCallback != NULL && nbytes != SOCKET_ERROR) | |
407 | { | |
408 | progressInfo.nRead += nbytes; | |
409 | (*pfnProgressCallback)(&progressInfo); | |
410 | } | |
411 | #endif | |
412 | ||
413 | /* | |
414 | * work out where the packet was from | |
415 | */ | |
416 | if (from.sin_addr.s_addr != remote.sin_addr.s_addr) | |
417 | { | |
418 | /* | |
419 | * not from our target - ignore it | |
420 | */ | |
421 | #ifdef DEBUG | |
422 | printf("read_packet: ignoring packet from %s\n", | |
423 | inet_ntoa(from.sin_addr)); | |
424 | #endif | |
425 | ||
426 | return 0; | |
427 | } | |
428 | else if (ntohs(from.sin_port) == ports[DBUG_INDEX]) | |
429 | devchan = DC_DBUG; | |
430 | else if (ntohs(from.sin_port) == ports[APPL_INDEX]) | |
431 | devchan = DC_APPL; | |
432 | else | |
433 | { | |
434 | /* | |
435 | * unknown port number - ignore it | |
436 | */ | |
437 | #ifdef DEBUG | |
438 | printf("read_packet: ignore packet from port %hd\n", | |
439 | htons(from.sin_port)); | |
440 | #endif | |
441 | ||
442 | return 0; | |
443 | } | |
444 | ||
445 | #if defined(DEBUG) && !defined(DO_TRACE) | |
446 | printf("EthernetRead: %d bytes from %s channel\n", | |
447 | nbytes, (devchan == DC_DBUG) ? "DBUG" : "APPL"); | |
448 | #endif | |
449 | ||
450 | #ifdef DO_TRACE | |
451 | printf("[%d on %d]\n", nbytes, devchan); | |
452 | { | |
453 | int i = 0; | |
454 | unsigned char *cptr = packet->data; | |
455 | ||
456 | while (i < nbytes) | |
457 | { | |
458 | printf("<%02X ", *(cptr++)); | |
459 | ||
460 | if (!(++i % 16)) | |
461 | printf("\n"); | |
462 | } | |
463 | ||
464 | if (i % 16) | |
465 | printf("\n"); | |
466 | } | |
467 | #endif | |
468 | ||
469 | /* | |
470 | * OK - fill in the details | |
471 | */ | |
472 | packet->type = devchan; | |
473 | packet->len = nbytes; | |
474 | return 1; | |
475 | } | |
476 | ||
477 | /**********************************************************************/ | |
478 | ||
479 | /* | |
480 | * Function: Ethernet_Open | |
481 | * Purpose: Open the Ethernet device. See the documentation for | |
482 | * DeviceOpen in drivers.h | |
483 | * | |
484 | * Post-conditions: Will have updated struct sockaddr_in remote (*ia) | |
485 | * with the address of the remote target. | |
486 | */ | |
487 | static int EthernetOpen(const char *name, const char *arg) | |
488 | { | |
489 | #ifdef COMPILING_ON_WINDOWS | |
490 | WORD wVersionRequested; | |
491 | WSADATA wsaData; | |
492 | #endif | |
493 | /* | |
494 | * name is passed as e=<blah>, so skip 1st two characters | |
495 | */ | |
496 | const char *etheraddr = name + 2; | |
497 | ||
498 | #ifdef DEBUG | |
499 | printf("EthernetOpen: name `%s'\n", name); | |
500 | #endif | |
501 | ||
502 | /* Check that the name is a valid one */ | |
503 | if (EthernetMatch(name, arg) != 0) | |
504 | return -1; | |
505 | ||
506 | #ifdef COMPILING_ON_WINDOWS | |
507 | wVersionRequested = MAKEWORD(1, 1); | |
508 | if (WSAStartup(wVersionRequested, &wsaData) != 0) | |
509 | /* | |
510 | * Couldn't find a useable winsock.dll. | |
511 | */ | |
512 | return -1; | |
513 | ||
514 | if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 ) | |
515 | { | |
516 | WSACleanup(); | |
517 | ||
518 | /* | |
519 | * Couldn't find a winsock.dll with supported version. | |
520 | */ | |
521 | return -1; | |
522 | } | |
523 | #endif | |
524 | ||
525 | memset((char *)ia, 0, sizeof(*ia)); | |
526 | if (set_address(etheraddr, ia) < 0) | |
527 | { | |
528 | #ifdef COMPILING_ON_WINDOWS | |
529 | /* | |
530 | * SJ - I'm not sure that this is the correct way to handle this | |
531 | * as Fail calls remote_disable and exits, while panic just exits. | |
532 | * However at the time of writing remote_disable does nothing! | |
533 | */ | |
534 | /* Panic("EthernetOpen: bad name `%s'\n", etheraddr); */ | |
535 | #else | |
536 | Fail("EthernetOpen: bad name `%s'\n", etheraddr); | |
537 | #endif | |
538 | return -1; | |
539 | } | |
540 | ||
541 | if ((sock = open_socket()) < 0) | |
542 | return -1; | |
543 | ||
544 | /* | |
545 | * fetch the port numbers assigned by the remote target | |
546 | * to its Debug and Application sockets | |
547 | */ | |
548 | fetch_ports(); | |
549 | ||
550 | return 0; | |
551 | } | |
552 | ||
553 | static int EthernetMatch(const char *name, const char *arg) | |
554 | { | |
555 | /* IGNORE arg */ | |
556 | if (0) | |
557 | arg = arg; | |
558 | ||
559 | if (name == NULL) | |
560 | return -1; | |
561 | ||
562 | if (tolower(name[0]) != 'e' || name[1] != '=') | |
563 | return -1; | |
564 | ||
565 | return 0; | |
566 | } | |
567 | ||
568 | static void EthernetClose(void) | |
569 | { | |
570 | if (sock >= 0) | |
571 | { | |
572 | closesocket(sock); | |
573 | sock = -1; | |
574 | } | |
575 | ||
576 | #ifdef COMPILING_ON_WINDOWS | |
577 | WSACleanup(); | |
578 | #endif | |
579 | } | |
580 | ||
581 | static int EthernetRead(DriverCall *dc, bool block) | |
582 | { | |
583 | fd_set fdset; | |
584 | struct timeval tv; | |
585 | int err; | |
586 | ||
587 | FD_ZERO(&fdset); | |
588 | FD_SET(sock, &fdset); | |
589 | ||
590 | #ifdef COMPILING_ON_WINDOWS | |
591 | UNUSED(block); | |
592 | tv.tv_sec = tv.tv_usec = 0; | |
593 | #else | |
594 | tv.tv_sec = 0; | |
595 | tv.tv_usec = (block ? 10000 : 0); | |
596 | #endif | |
597 | ||
598 | err = select(sock + 1, &fdset, NULL, NULL, &tv); | |
599 | ||
600 | if (err < 0) { | |
601 | if (errno == EINTR) { | |
602 | return 0; | |
603 | } | |
604 | panic("ethernet select failure (errno=%i)",errno); | |
605 | return 0; | |
606 | } | |
607 | ||
608 | if (FD_ISSET(sock, &fdset)) | |
609 | return read_packet(&dc->dc_packet); | |
610 | else | |
611 | return 0; | |
612 | } | |
613 | ||
614 | static int EthernetWrite(DriverCall *dc) | |
615 | { | |
616 | int nbytes; | |
617 | struct data_packet *packet = &dc->dc_packet; | |
618 | ||
619 | if (packet->type == DC_DBUG) | |
620 | ia->sin_port = htons(ports[DBUG_INDEX]); | |
621 | else if (packet->type == DC_APPL) | |
622 | ia->sin_port = htons(ports[APPL_INDEX]); | |
623 | else | |
624 | { | |
625 | panic("EthernetWrite: unknown devchan"); | |
626 | return 0; | |
627 | } | |
628 | ||
629 | #if defined(DEBUG) && !defined(DO_TRACE) | |
630 | printf("EthernetWrite: %d bytes to %s channel\n", | |
631 | packet->len, (packet->type == DC_DBUG) ? "DBUG" : "APPL"); | |
632 | #endif | |
633 | ||
634 | #ifdef DO_TRACE | |
635 | printf("[%d on %d]\n", packet->len, packet->type); | |
636 | { | |
637 | int i = 0; | |
638 | unsigned char *cptr = packet->data; | |
639 | ||
640 | while (i < packet->len) | |
641 | { | |
642 | printf(">%02X ", *(cptr++)); | |
643 | ||
644 | if (!(++i % 16)) | |
645 | printf("\n"); | |
646 | } | |
647 | ||
648 | if (i % 16) | |
649 | printf("\n"); | |
650 | } | |
651 | #endif | |
652 | ||
653 | if ((nbytes = sendto(sock, (char *)(packet->data), packet->len, 0, | |
654 | (struct sockaddr *)ia, sizeof(*ia))) != packet->len) | |
655 | { | |
656 | #ifdef COMPILING_ON_WINDOWS | |
657 | if (nbytes == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK) | |
658 | #else | |
659 | if (nbytes < 0 && errno != EWOULDBLOCK) | |
660 | #endif | |
661 | { | |
662 | #ifdef DEBUG | |
663 | perror("sendto"); | |
664 | #endif | |
665 | ||
666 | #ifdef COMPILING_ON_WINDOWS | |
667 | panic("ethernet send failure\n"); | |
668 | #else | |
669 | /* might not work for Windows */ | |
670 | panic("ethernet send failure [%s]\n", | |
671 | #ifdef STDC_HEADERS | |
672 | strerror(errno)); | |
673 | #else | |
674 | errno < sys_nerr ? sys_errlist[errno] : "unknown errno"); | |
675 | #endif /* STDC_HEADERS */ | |
676 | #endif | |
677 | } | |
678 | #ifdef DEBUG | |
679 | else if (nbytes >= 0) | |
680 | fprintf(stderr, "ethernet send: asked for %d, sent %d\n", packet->len, nbytes); | |
681 | #endif | |
682 | return 0; | |
683 | } | |
684 | ||
685 | #ifdef COMPILING_ON_WINDOWS | |
686 | if (pfnProgressCallback != NULL && nbytes != SOCKET_ERROR) | |
687 | { | |
688 | progressInfo.nWritten += nbytes; | |
689 | (*pfnProgressCallback)(&progressInfo); | |
690 | } | |
691 | #endif | |
692 | ||
693 | return 1; | |
694 | } | |
695 | ||
696 | static int EthernetIoctl(const int opcode, void *args) | |
697 | { | |
698 | #ifdef DEBUG | |
699 | printf( "EthernetIoctl: op %d arg %x\n", opcode, args ); | |
700 | #endif | |
701 | ||
702 | /* | |
703 | * IGNORE(opcode) | |
704 | */ | |
705 | if (0) | |
706 | { | |
707 | int dummy = opcode; | |
708 | UNUSED(dummy); | |
709 | } | |
710 | UNUSED(args); | |
711 | ||
712 | switch ( opcode ) | |
713 | { | |
714 | case DC_RESYNC: | |
715 | { | |
716 | #ifdef DEBUG | |
717 | printf( "EthernetIoctl: resync\n" ); | |
718 | #endif | |
719 | fetch_ports(); | |
720 | return 0; | |
721 | } | |
722 | ||
723 | default: | |
724 | { | |
725 | return -1; | |
726 | } | |
727 | } | |
728 | } | |
729 | ||
730 | /* EOF etherdrv.c */ |