if_el.c revision 1.54
1 /* $NetBSD: if_el.c,v 1.54 1998/07/05 06:49:13 jonathan Exp $ */ 2 3 /* 4 * Copyright (c) 1994, Matthew E. Kimmel. Permission is hereby granted 5 * to use, copy, modify and distribute this software provided that both 6 * the copyright notice and this permission notice appear in all copies 7 * of the software, derivative works or modified versions, and any 8 * portions thereof. 9 */ 10 11 /* 12 * 3COM Etherlink 3C501 device driver 13 */ 14 15 /* 16 * Bugs/possible improvements: 17 * - Does not currently support DMA 18 * - Does not currently support multicasts 19 */ 20 21 #include "opt_inet.h" 22 #include "opt_ns.h" 23 #include "bpfilter.h" 24 #include "rnd.h" 25 26 #include <sys/param.h> 27 #include <sys/systm.h> 28 #include <sys/errno.h> 29 #include <sys/ioctl.h> 30 #include <sys/mbuf.h> 31 #include <sys/socket.h> 32 #include <sys/syslog.h> 33 #include <sys/device.h> 34 #if NRND > 0 35 #include <sys/rnd.h> 36 #endif 37 38 #include <net/if.h> 39 #include <net/if_dl.h> 40 #include <net/if_types.h> 41 42 #include <net/if_ether.h> 43 44 #ifdef INET 45 #include <netinet/in.h> 46 #include <netinet/in_systm.h> 47 #include <netinet/in_var.h> 48 #include <netinet/ip.h> 49 #include <netinet/if_inarp.h> 50 #endif 51 52 #ifdef NS 53 #include <netns/ns.h> 54 #include <netns/ns_if.h> 55 #endif 56 57 #if NBPFILTER > 0 58 #include <net/bpf.h> 59 #include <net/bpfdesc.h> 60 #endif 61 62 #include <machine/cpu.h> 63 #include <machine/intr.h> 64 #include <machine/bus.h> 65 66 #include <dev/isa/isavar.h> 67 #include <dev/isa/if_elreg.h> 68 69 #define ETHER_MIN_LEN 64 70 #define ETHER_MAX_LEN 1518 71 #define ETHER_ADDR_LEN 6 72 73 /* for debugging convenience */ 74 #ifdef EL_DEBUG 75 #define DPRINTF(x) printf x 76 #else 77 #define DPRINTF(x) 78 #endif 79 80 /* 81 * per-line info and status 82 */ 83 struct el_softc { 84 struct device sc_dev; 85 void *sc_ih; 86 87 struct ethercom sc_ethercom; /* ethernet common */ 88 bus_space_tag_t sc_iot; /* bus space identifier */ 89 bus_space_handle_t sc_ioh; /* i/o handle */ 90 91 #if NRND > 0 92 rndsource_element_t rnd_source; 93 #endif 94 }; 95 96 /* 97 * prototypes 98 */ 99 int elintr __P((void *)); 100 void elinit __P((struct el_softc *)); 101 int elioctl __P((struct ifnet *, u_long, caddr_t)); 102 void elstart __P((struct ifnet *)); 103 void elwatchdog __P((struct ifnet *)); 104 void elreset __P((struct el_softc *)); 105 void elstop __P((struct el_softc *)); 106 static int el_xmit __P((struct el_softc *)); 107 void elread __P((struct el_softc *, int)); 108 struct mbuf *elget __P((struct el_softc *sc, int)); 109 static inline void el_hardreset __P((struct el_softc *)); 110 111 int elprobe __P((struct device *, struct cfdata *, void *)); 112 void elattach __P((struct device *, struct device *, void *)); 113 114 struct cfattach el_ca = { 115 sizeof(struct el_softc), elprobe, elattach 116 }; 117 118 /* 119 * Probe routine. 120 * 121 * See if the card is there and at the right place. 122 * (XXX - cgd -- needs help) 123 */ 124 int 125 elprobe(parent, match, aux) 126 struct device *parent; 127 struct cfdata *match; 128 void *aux; 129 { 130 struct isa_attach_args *ia = aux; 131 bus_space_tag_t iot = ia->ia_iot; 132 bus_space_handle_t ioh; 133 int iobase = ia->ia_iobase; 134 u_int8_t station_addr[ETHER_ADDR_LEN]; 135 u_int8_t i; 136 int rval; 137 138 rval = 0; 139 140 /* First check the base. */ 141 if (iobase < 0x200 || iobase > 0x3f0) 142 return 0; 143 144 /* Map i/o space. */ 145 if (bus_space_map(iot, iobase, 16, 0, &ioh)) 146 return 0; 147 148 /* 149 * Now attempt to grab the station address from the PROM and see if it 150 * contains the 3com vendor code. 151 */ 152 DPRINTF(("Probing 3c501 at 0x%x...\n", iobase)); 153 154 /* Reset the board. */ 155 DPRINTF(("Resetting board...\n")); 156 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET); 157 delay(5); 158 bus_space_write_1(iot, ioh, EL_AC, 0); 159 160 /* Now read the address. */ 161 DPRINTF(("Reading station address...\n")); 162 for (i = 0; i < ETHER_ADDR_LEN; i++) { 163 bus_space_write_1(iot, ioh, EL_GPBL, i); 164 station_addr[i] = bus_space_read_1(iot, ioh, EL_EAW); 165 } 166 DPRINTF(("Address is %s\n", ether_sprintf(station_addr))); 167 168 /* 169 * If the vendor code is ok, return a 1. We'll assume that whoever 170 * configured this system is right about the IRQ. 171 */ 172 if (station_addr[0] != 0x02 || station_addr[1] != 0x60 || 173 station_addr[2] != 0x8c) { 174 DPRINTF(("Bad vendor code.\n")); 175 goto out; 176 } 177 DPRINTF(("Vendor code ok.\n")); 178 179 ia->ia_iosize = 16; 180 ia->ia_msize = 0; 181 rval = 1; 182 183 out: 184 bus_space_unmap(iot, ioh, 16); 185 return rval; 186 } 187 188 /* 189 * Attach the interface to the kernel data structures. By the time this is 190 * called, we know that the card exists at the given I/O address. We still 191 * assume that the IRQ given is correct. 192 */ 193 void 194 elattach(parent, self, aux) 195 struct device *parent, *self; 196 void *aux; 197 { 198 struct el_softc *sc = (void *)self; 199 struct isa_attach_args *ia = aux; 200 bus_space_tag_t iot = ia->ia_iot; 201 bus_space_handle_t ioh; 202 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 203 u_int8_t myaddr[ETHER_ADDR_LEN]; 204 u_int8_t i; 205 206 printf("\n"); 207 208 DPRINTF(("Attaching %s...\n", sc->sc_dev.dv_xname)); 209 210 /* Map i/o space. */ 211 if (bus_space_map(iot, ia->ia_iobase, ia->ia_iosize, 0, &ioh)) { 212 printf("%s: can't map i/o space\n", self->dv_xname); 213 return; 214 } 215 216 sc->sc_iot = iot; 217 sc->sc_ioh = ioh; 218 219 /* Reset the board. */ 220 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET); 221 delay(5); 222 bus_space_write_1(iot, ioh, EL_AC, 0); 223 224 /* Now read the address. */ 225 for (i = 0; i < ETHER_ADDR_LEN; i++) { 226 bus_space_write_1(iot, ioh, EL_GPBL, i); 227 myaddr[i] = bus_space_read_1(iot, ioh, EL_EAW); 228 } 229 230 /* Stop the board. */ 231 elstop(sc); 232 233 /* Initialize ifnet structure. */ 234 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 235 ifp->if_softc = sc; 236 ifp->if_start = elstart; 237 ifp->if_ioctl = elioctl; 238 ifp->if_watchdog = elwatchdog; 239 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS; 240 241 /* Now we can attach the interface. */ 242 DPRINTF(("Attaching interface...\n")); 243 if_attach(ifp); 244 ether_ifattach(ifp, myaddr); 245 246 /* Print out some information for the user. */ 247 printf("%s: address %s\n", self->dv_xname, ether_sprintf(myaddr)); 248 249 /* Finally, attach to bpf filter if it is present. */ 250 #if NBPFILTER > 0 251 DPRINTF(("Attaching to BPF...\n")); 252 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 253 #endif 254 255 sc->sc_ih = isa_intr_establish(ia->ia_ic, ia->ia_irq, IST_EDGE, 256 IPL_NET, elintr, sc); 257 258 #if NRND > 0 259 DPRINTF(("Attaching to random...\n")); 260 rnd_attach_source(&sc->rnd_source, sc->sc_dev.dv_xname, RND_TYPE_NET); 261 #endif 262 263 DPRINTF(("elattach() finished.\n")); 264 } 265 266 /* 267 * Reset interface. 268 */ 269 void 270 elreset(sc) 271 struct el_softc *sc; 272 { 273 int s; 274 275 DPRINTF(("elreset()\n")); 276 s = splnet(); 277 elstop(sc); 278 elinit(sc); 279 splx(s); 280 } 281 282 /* 283 * Stop interface. 284 */ 285 void 286 elstop(sc) 287 struct el_softc *sc; 288 { 289 290 bus_space_write_1(sc->sc_iot, sc->sc_ioh, EL_AC, 0); 291 } 292 293 /* 294 * Do a hardware reset of the board, and upload the ethernet address again in 295 * case the board forgets. 296 */ 297 static inline void 298 el_hardreset(sc) 299 struct el_softc *sc; 300 { 301 bus_space_tag_t iot = sc->sc_iot; 302 bus_space_handle_t ioh = sc->sc_ioh; 303 int i; 304 305 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RESET); 306 delay(5); 307 bus_space_write_1(iot, ioh, EL_AC, 0); 308 309 for (i = 0; i < ETHER_ADDR_LEN; i++) 310 bus_space_write_1(iot, ioh, i, 311 LLADDR(sc->sc_ethercom.ec_if.if_sadl)[i]); 312 } 313 314 /* 315 * Initialize interface. 316 */ 317 void 318 elinit(sc) 319 struct el_softc *sc; 320 { 321 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 322 bus_space_tag_t iot = sc->sc_iot; 323 bus_space_handle_t ioh = sc->sc_ioh; 324 325 /* First, reset the board. */ 326 el_hardreset(sc); 327 328 /* Configure rx. */ 329 DPRINTF(("Configuring rx...\n")); 330 if (ifp->if_flags & IFF_PROMISC) 331 bus_space_write_1(iot, ioh, EL_RXC, 332 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 333 EL_RXC_DOFLOW | EL_RXC_PROMISC); 334 else 335 bus_space_write_1(iot, ioh, EL_RXC, 336 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 337 EL_RXC_DOFLOW | EL_RXC_ABROAD); 338 bus_space_write_1(iot, ioh, EL_RBC, 0); 339 340 /* Configure TX. */ 341 DPRINTF(("Configuring tx...\n")); 342 bus_space_write_1(iot, ioh, EL_TXC, 0); 343 344 /* Start reception. */ 345 DPRINTF(("Starting reception...\n")); 346 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 347 348 /* Set flags appropriately. */ 349 ifp->if_flags |= IFF_RUNNING; 350 ifp->if_flags &= ~IFF_OACTIVE; 351 352 /* And start output. */ 353 elstart(ifp); 354 } 355 356 /* 357 * Start output on interface. Get datagrams from the queue and output them, 358 * giving the receiver a chance between datagrams. Call only from splnet or 359 * interrupt level! 360 */ 361 void 362 elstart(ifp) 363 struct ifnet *ifp; 364 { 365 struct el_softc *sc = ifp->if_softc; 366 bus_space_tag_t iot = sc->sc_iot; 367 bus_space_handle_t ioh = sc->sc_ioh; 368 struct mbuf *m, *m0; 369 int s, i, off, retries; 370 371 DPRINTF(("elstart()...\n")); 372 s = splnet(); 373 374 /* Don't do anything if output is active. */ 375 if ((ifp->if_flags & IFF_OACTIVE) != 0) { 376 splx(s); 377 return; 378 } 379 380 ifp->if_flags |= IFF_OACTIVE; 381 382 /* 383 * The main loop. They warned me against endless loops, but would I 384 * listen? NOOO.... 385 */ 386 for (;;) { 387 /* Dequeue the next datagram. */ 388 IF_DEQUEUE(&ifp->if_snd, m0); 389 390 /* If there's nothing to send, return. */ 391 if (m0 == 0) 392 break; 393 394 #if NBPFILTER > 0 395 /* Give the packet to the bpf, if any. */ 396 if (ifp->if_bpf) 397 bpf_mtap(ifp->if_bpf, m0); 398 #endif 399 400 /* Disable the receiver. */ 401 bus_space_write_1(iot, ioh, EL_AC, EL_AC_HOST); 402 bus_space_write_1(iot, ioh, EL_RBC, 0); 403 404 /* Transfer datagram to board. */ 405 DPRINTF(("el: xfr pkt length=%d...\n", m0->m_pkthdr.len)); 406 off = EL_BUFSIZ - max(m0->m_pkthdr.len, ETHER_MIN_LEN); 407 #ifdef DIAGNOSTIC 408 if ((off & 0xffff) != off) 409 printf("%s: bogus off 0x%x\n", 410 sc->sc_dev.dv_xname, off); 411 #endif 412 bus_space_write_1(iot, ioh, EL_GPBL, off & 0xff); 413 bus_space_write_1(iot, ioh, EL_GPBH, (off >> 8) & 0xff); 414 415 /* Copy the datagram to the buffer. */ 416 for (m = m0; m != 0; m = m->m_next) 417 bus_space_write_multi_1(iot, ioh, EL_BUF, 418 mtod(m, u_int8_t *), m->m_len); 419 420 m_freem(m0); 421 422 /* Now transmit the datagram. */ 423 retries = 0; 424 for (;;) { 425 bus_space_write_1(iot, ioh, EL_GPBL, off & 0xff); 426 bus_space_write_1(iot, ioh, EL_GPBH, (off >> 8) & 0xff); 427 if (el_xmit(sc)) { 428 ifp->if_oerrors++; 429 break; 430 } 431 /* Check out status. */ 432 i = bus_space_read_1(iot, ioh, EL_TXS); 433 DPRINTF(("tx status=0x%x\n", i)); 434 if ((i & EL_TXS_READY) == 0) { 435 DPRINTF(("el: err txs=%x\n", i)); 436 if (i & (EL_TXS_COLL | EL_TXS_COLL16)) { 437 ifp->if_collisions++; 438 if ((i & EL_TXC_DCOLL16) == 0 && 439 retries < 15) { 440 retries++; 441 bus_space_write_1(iot, ioh, 442 EL_AC, EL_AC_HOST); 443 } 444 } else { 445 ifp->if_oerrors++; 446 break; 447 } 448 } else { 449 ifp->if_opackets++; 450 break; 451 } 452 } 453 454 /* 455 * Now give the card a chance to receive. 456 * Gotta love 3c501s... 457 */ 458 (void)bus_space_read_1(iot, ioh, EL_AS); 459 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 460 splx(s); 461 /* Interrupt here. */ 462 s = splnet(); 463 } 464 465 (void)bus_space_read_1(iot, ioh, EL_AS); 466 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 467 ifp->if_flags &= ~IFF_OACTIVE; 468 splx(s); 469 } 470 471 /* 472 * This function actually attempts to transmit a datagram downloaded to the 473 * board. Call at splnet or interrupt, after downloading data! Returns 0 on 474 * success, non-0 on failure. 475 */ 476 static int 477 el_xmit(sc) 478 struct el_softc *sc; 479 { 480 bus_space_tag_t iot = sc->sc_iot; 481 bus_space_handle_t ioh = sc->sc_ioh; 482 int i; 483 484 /* 485 * XXX 486 * This busy-waits for the tx completion. Can we get an interrupt 487 * instead? 488 */ 489 490 DPRINTF(("el: xmit...")); 491 bus_space_write_1(iot, ioh, EL_AC, EL_AC_TXFRX); 492 i = 20000; 493 while ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_TXBUSY) && (i > 0)) 494 i--; 495 if (i == 0) { 496 DPRINTF(("tx not ready\n")); 497 return -1; 498 } 499 DPRINTF(("%d cycles.\n", 20000 - i)); 500 return 0; 501 } 502 503 /* 504 * Controller interrupt. 505 */ 506 int 507 elintr(arg) 508 void *arg; 509 { 510 register struct el_softc *sc = arg; 511 bus_space_tag_t iot = sc->sc_iot; 512 bus_space_handle_t ioh = sc->sc_ioh; 513 u_int8_t rxstat; 514 int len; 515 516 DPRINTF(("elintr: ")); 517 518 /* Check board status. */ 519 if ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_RXBUSY) != 0) { 520 (void)bus_space_read_1(iot, ioh, EL_RXC); 521 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 522 return 0; 523 } 524 525 for (;;) { 526 rxstat = bus_space_read_1(iot, ioh, EL_RXS); 527 if (rxstat & EL_RXS_STALE) 528 break; 529 530 /* If there's an overflow, reinit the board. */ 531 if ((rxstat & EL_RXS_NOFLOW) == 0) { 532 DPRINTF(("overflow.\n")); 533 el_hardreset(sc); 534 /* Put board back into receive mode. */ 535 if (sc->sc_ethercom.ec_if.if_flags & IFF_PROMISC) 536 bus_space_write_1(iot, ioh, EL_RXC, 537 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 538 EL_RXC_DOFLOW | EL_RXC_PROMISC); 539 else 540 bus_space_write_1(iot, ioh, EL_RXC, 541 EL_RXC_AGF | EL_RXC_DSHORT | EL_RXC_DDRIB | 542 EL_RXC_DOFLOW | EL_RXC_ABROAD); 543 (void)bus_space_read_1(iot, ioh, EL_AS); 544 bus_space_write_1(iot, ioh, EL_RBC, 0); 545 break; 546 } 547 548 /* Incoming packet. */ 549 len = bus_space_read_1(iot, ioh, EL_RBL); 550 len |= bus_space_read_1(iot, ioh, EL_RBH) << 8; 551 DPRINTF(("receive len=%d rxstat=%x ", len, rxstat)); 552 bus_space_write_1(iot, ioh, EL_AC, EL_AC_HOST); 553 554 /* Pass data up to upper levels. */ 555 elread(sc, len); 556 557 /* Is there another packet? */ 558 if ((bus_space_read_1(iot, ioh, EL_AS) & EL_AS_RXBUSY) != 0) 559 break; 560 561 #if NRND > 0 562 rnd_add_uint32(&sc->rnd_source, rxstat); 563 #endif 564 565 DPRINTF(("<rescan> ")); 566 } 567 568 (void)bus_space_read_1(iot, ioh, EL_RXC); 569 bus_space_write_1(iot, ioh, EL_AC, EL_AC_IRQE | EL_AC_RX); 570 return 1; 571 } 572 573 /* 574 * Pass a packet to the higher levels. 575 */ 576 void 577 elread(sc, len) 578 register struct el_softc *sc; 579 int len; 580 { 581 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 582 struct mbuf *m; 583 struct ether_header *eh; 584 585 if (len <= sizeof(struct ether_header) || 586 len > ETHER_MAX_LEN) { 587 printf("%s: invalid packet size %d; dropping\n", 588 sc->sc_dev.dv_xname, len); 589 ifp->if_ierrors++; 590 return; 591 } 592 593 /* Pull packet off interface. */ 594 m = elget(sc, len); 595 if (m == 0) { 596 ifp->if_ierrors++; 597 return; 598 } 599 600 ifp->if_ipackets++; 601 602 /* We assume that the header fit entirely in one mbuf. */ 603 eh = mtod(m, struct ether_header *); 604 605 #if NBPFILTER > 0 606 /* 607 * Check if there's a BPF listener on this interface. 608 * If so, hand off the raw packet to BPF. 609 */ 610 if (ifp->if_bpf) { 611 bpf_mtap(ifp->if_bpf, m); 612 613 /* 614 * Note that the interface cannot be in promiscuous mode if 615 * there are no BPF listeners. And if we are in promiscuous 616 * mode, we have to check if this packet is really ours. 617 */ 618 if ((ifp->if_flags & IFF_PROMISC) && 619 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */ 620 bcmp(eh->ether_dhost, LLADDR(ifp->if_sadl), 621 sizeof(eh->ether_dhost)) != 0) { 622 m_freem(m); 623 return; 624 } 625 } 626 #endif 627 628 /* We assume that the header fit entirely in one mbuf. */ 629 m_adj(m, sizeof(struct ether_header)); 630 ether_input(ifp, eh, m); 631 } 632 633 /* 634 * Pull read data off a interface. Len is length of data, with local net 635 * header stripped. We copy the data into mbufs. When full cluster sized 636 * units are present we copy into clusters. 637 */ 638 struct mbuf * 639 elget(sc, totlen) 640 struct el_softc *sc; 641 int totlen; 642 { 643 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 644 bus_space_tag_t iot = sc->sc_iot; 645 bus_space_handle_t ioh = sc->sc_ioh; 646 struct mbuf *top, **mp, *m; 647 int len; 648 649 MGETHDR(m, M_DONTWAIT, MT_DATA); 650 if (m == 0) 651 return 0; 652 m->m_pkthdr.rcvif = ifp; 653 m->m_pkthdr.len = totlen; 654 len = MHLEN; 655 top = 0; 656 mp = ⊤ 657 658 bus_space_write_1(iot, ioh, EL_GPBL, 0); 659 bus_space_write_1(iot, ioh, EL_GPBH, 0); 660 661 while (totlen > 0) { 662 if (top) { 663 MGET(m, M_DONTWAIT, MT_DATA); 664 if (m == 0) { 665 m_freem(top); 666 return 0; 667 } 668 len = MLEN; 669 } 670 if (totlen >= MINCLSIZE) { 671 MCLGET(m, M_DONTWAIT); 672 if ((m->m_flags & M_EXT) == 0) { 673 m_free(m); 674 m_freem(top); 675 return 0; 676 } 677 len = MCLBYTES; 678 } 679 m->m_len = len = min(totlen, len); 680 bus_space_read_multi_1(iot, ioh, EL_BUF, mtod(m, u_int8_t *), len); 681 totlen -= len; 682 *mp = m; 683 mp = &m->m_next; 684 } 685 686 bus_space_write_1(iot, ioh, EL_RBC, 0); 687 bus_space_write_1(iot, ioh, EL_AC, EL_AC_RX); 688 689 return top; 690 } 691 692 /* 693 * Process an ioctl request. This code needs some work - it looks pretty ugly. 694 */ 695 int 696 elioctl(ifp, cmd, data) 697 register struct ifnet *ifp; 698 u_long cmd; 699 caddr_t data; 700 { 701 struct el_softc *sc = ifp->if_softc; 702 struct ifaddr *ifa = (struct ifaddr *)data; 703 int s, error = 0; 704 705 s = splnet(); 706 707 switch (cmd) { 708 709 case SIOCSIFADDR: 710 ifp->if_flags |= IFF_UP; 711 712 switch (ifa->ifa_addr->sa_family) { 713 #ifdef INET 714 case AF_INET: 715 elinit(sc); 716 arp_ifinit(ifp, ifa); 717 break; 718 #endif 719 #ifdef NS 720 /* XXX - This code is probably wrong. */ 721 case AF_NS: 722 { 723 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 724 725 if (ns_nullhost(*ina)) 726 ina->x_host = 727 *(union ns_host *)LLADDR(ifp->if_sadl); 728 else 729 bcopy(ina->x_host.c_host, LLADDR(ifp->if_sadl), 730 ETHER_ADDR_LEN); 731 /* Set new address. */ 732 elinit(sc); 733 break; 734 } 735 #endif 736 default: 737 elinit(sc); 738 break; 739 } 740 break; 741 742 case SIOCSIFFLAGS: 743 if ((ifp->if_flags & IFF_UP) == 0 && 744 (ifp->if_flags & IFF_RUNNING) != 0) { 745 /* 746 * If interface is marked down and it is running, then 747 * stop it. 748 */ 749 elstop(sc); 750 ifp->if_flags &= ~IFF_RUNNING; 751 } else if ((ifp->if_flags & IFF_UP) != 0 && 752 (ifp->if_flags & IFF_RUNNING) == 0) { 753 /* 754 * If interface is marked up and it is stopped, then 755 * start it. 756 */ 757 elinit(sc); 758 } else { 759 /* 760 * Some other important flag might have changed, so 761 * reset. 762 */ 763 elreset(sc); 764 } 765 break; 766 767 default: 768 error = EINVAL; 769 break; 770 } 771 772 splx(s); 773 return error; 774 } 775 776 /* 777 * Device timeout routine. 778 */ 779 void 780 elwatchdog(ifp) 781 struct ifnet *ifp; 782 { 783 struct el_softc *sc = ifp->if_softc; 784 785 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 786 sc->sc_ethercom.ec_if.if_oerrors++; 787 788 elreset(sc); 789 } 790
Indexes created Fri Oct 03 02:09:57 GMT 2025