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sys/dev/scsipi/if_se.c
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1 /* $NetBSD: if_se.c,v 1.62 2006/09/07 02:40:33 dogcow Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Ian W. Dall <ian.dall@dsto.defence.gov.au> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by Ian W. Dall. 18 * 4. The name of the author may not be used to endorse or promote products 19 * derived from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 22 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 23 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 24 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 26 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 30 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33 /* 34 * Driver for Cabletron EA41x scsi ethernet adaptor. 35 * 36 * Written by Ian Dall <ian.dall@dsto.defence.gov.au> Feb 3, 1997 37 * 38 * Acknowledgement: Thanks are due to Philip L. Budne <budd@cs.bu.edu> 39 * who reverse engineered the EA41x. In developing this code, 40 * Phil's userland daemon "etherd", was refered to extensively in lieu 41 * of accurate documentation for the device. 42 * 43 * This is a weird device! It doesn't conform to the scsi spec in much 44 * at all. About the only standard command supported is inquiry. Most 45 * commands are 6 bytes long, but the recv data is only 1 byte. Data 46 * must be received by periodically polling the device with the recv 47 * command. 48 * 49 * This driver is also a bit unusual. It must look like a network 50 * interface and it must also appear to be a scsi device to the scsi 51 * system. Hence there are cases where there are two entry points. eg 52 * sestart is to be called from the scsi subsytem and se_ifstart from 53 * the network interface subsystem. In addition, to facilitate scsi 54 * commands issued by userland programs, there are open, close and 55 * ioctl entry points. This allows a user program to, for example, 56 * display the ea41x stats and download new code into the adaptor --- 57 * functions which can't be performed through the ifconfig interface. 58 * Normal operation does not require any special userland program. 59 */ 60 61 #include <sys/cdefs.h> 62 __KERNEL_RCSID(0, "$NetBSD: if_se.c,v 1.62 2006/09/07 02:40:33 dogcow Exp $"); 63 64 #include "opt_inet.h" 65 #include "opt_atalk.h" 66 #include "bpfilter.h" 67 68 #include <sys/param.h> 69 #include <sys/systm.h> 70 #include <sys/callout.h> 71 #include <sys/syslog.h> 72 #include <sys/kernel.h> 73 #include <sys/file.h> 74 #include <sys/stat.h> 75 #include <sys/ioctl.h> 76 #include <sys/buf.h> 77 #include <sys/uio.h> 78 #include <sys/malloc.h> 79 #include <sys/errno.h> 80 #include <sys/device.h> 81 #include <sys/disklabel.h> 82 #include <sys/disk.h> 83 #include <sys/proc.h> 84 #include <sys/conf.h> 85 86 #include <dev/scsipi/scsipi_all.h> 87 #include <dev/scsipi/scsi_ctron_ether.h> 88 #include <dev/scsipi/scsiconf.h> 89 90 #include <sys/mbuf.h> 91 92 #include <sys/socket.h> 93 #include <net/if.h> 94 #include <net/if_dl.h> 95 #include <net/if_ether.h> 96 #include <net/if_media.h> 97 98 #ifdef INET 99 #include <netinet/in.h> 100 #include <netinet/if_inarp.h> 101 #endif 102 103 104 #ifdef NETATALK 105 #include <netatalk/at.h> 106 #endif 107 108 109 #if NBPFILTER > 0 110 #include <net/bpf.h> 111 #include <net/bpfdesc.h> 112 #endif 113 114 #define SETIMEOUT 1000 115 #define SEOUTSTANDING 4 116 #define SERETRIES 4 117 #define SE_PREFIX 4 118 #define ETHER_CRC 4 119 #define SEMINSIZE 60 120 121 /* Make this big enough for an ETHERMTU packet in promiscuous mode. */ 122 #define MAX_SNAP (ETHERMTU + sizeof(struct ether_header) + \ 123 SE_PREFIX + ETHER_CRC) 124 125 /* 10 full length packets appears to be the max ever returned. 16k is OK */ 126 #define RBUF_LEN (16 * 1024) 127 128 /* Tuning parameters: 129 * The EA41x only returns a maximum of 10 packets (regardless of size). 130 * We will attempt to adapt to polling fast enough to get RDATA_GOAL packets 131 * per read 132 */ 133 #define RDATA_MAX 10 134 #define RDATA_GOAL 8 135 136 /* se_poll and se_poll0 are the normal polling rate and the minimum 137 * polling rate respectively. se_poll0 should be chosen so that at 138 * maximum ethernet speed, we will read nearly RDATA_MAX packets. se_poll 139 * should be chosen for reasonable maximum latency. 140 * In practice, if we are being saturated with min length packets, we 141 * can't poll fast enough. Polling with zero delay actually 142 * worsens performance. se_poll0 is enforced to be always at least 1 143 */ 144 #define SE_POLL 40 /* default in milliseconds */ 145 #define SE_POLL0 10 /* default in milliseconds */ 146 int se_poll = 0; /* Delay in ticks set at attach time */ 147 int se_poll0 = 0; 148 int se_max_received = 0; /* Instrumentation */ 149 150 #define PROTOCMD(p, d) \ 151 ((d) = (p)) 152 153 #define PROTOCMD_DECL(name, val) \ 154 static const struct scsi_ctron_ether_generic name = val 155 156 #define PROTOCMD_DECL_SPECIAL(name, val) \ 157 static const struct __CONCAT(scsi_,name) name = val 158 159 /* Command initializers for commands using scsi_ctron_ether_generic */ 160 PROTOCMD_DECL(ctron_ether_send, {CTRON_ETHER_SEND}); 161 PROTOCMD_DECL(ctron_ether_add_proto, {CTRON_ETHER_ADD_PROTO}); 162 PROTOCMD_DECL(ctron_ether_get_addr, {CTRON_ETHER_GET_ADDR}); 163 PROTOCMD_DECL(ctron_ether_set_media, {CTRON_ETHER_SET_MEDIA}); 164 PROTOCMD_DECL(ctron_ether_set_addr, {CTRON_ETHER_SET_ADDR}); 165 PROTOCMD_DECL(ctron_ether_set_multi, {CTRON_ETHER_SET_MULTI}); 166 PROTOCMD_DECL(ctron_ether_remove_multi, {CTRON_ETHER_REMOVE_MULTI}); 167 168 /* Command initializers for commands using their own structures */ 169 PROTOCMD_DECL_SPECIAL(ctron_ether_recv, {CTRON_ETHER_RECV}); 170 PROTOCMD_DECL_SPECIAL(ctron_ether_set_mode, {CTRON_ETHER_SET_MODE}); 171 172 struct se_softc { 173 struct device sc_dev; 174 struct ethercom sc_ethercom; /* Ethernet common part */ 175 struct scsipi_periph *sc_periph;/* contains our targ, lun, etc. */ 176 177 struct callout sc_ifstart_ch; 178 struct callout sc_recv_ch; 179 180 char *sc_tbuf; 181 char *sc_rbuf; 182 int protos; 183 #define PROTO_IP 0x01 184 #define PROTO_ARP 0x02 185 #define PROTO_REVARP 0x04 186 #define PROTO_AT 0x08 187 #define PROTO_AARP 0x10 188 int sc_debug; 189 int sc_flags; 190 #define SE_NEED_RECV 0x1 191 int sc_last_timeout; 192 int sc_enabled; 193 }; 194 195 static int sematch(struct device *, struct cfdata *, void *); 196 static void seattach(struct device *, struct device *, void *); 197 198 static void se_ifstart(struct ifnet *); 199 static void sestart(struct scsipi_periph *); 200 201 static void sedone(struct scsipi_xfer *, int); 202 static int se_ioctl(struct ifnet *, u_long, caddr_t); 203 static void sewatchdog(struct ifnet *); 204 205 static inline u_int16_t ether_cmp(void *, void *); 206 static void se_recv(void *); 207 static struct mbuf *se_get(struct se_softc *, char *, int); 208 static int se_read(struct se_softc *, char *, int); 209 static int se_reset(struct se_softc *); 210 static int se_add_proto(struct se_softc *, int); 211 static int se_get_addr(struct se_softc *, u_int8_t *); 212 static int se_set_media(struct se_softc *, int); 213 static int se_init(struct se_softc *); 214 static int se_set_multi(struct se_softc *, u_int8_t *); 215 static int se_remove_multi(struct se_softc *, u_int8_t *); 216 #if 0 217 static int sc_set_all_multi(struct se_softc *, int); 218 #endif 219 static void se_stop(struct se_softc *); 220 static inline int se_scsipi_cmd(struct scsipi_periph *periph, 221 struct scsipi_generic *scsipi_cmd, 222 int cmdlen, u_char *data_addr, int datalen, 223 int retries, int timeout, struct buf *bp, 224 int flags); 225 static void se_delayed_ifstart(void *); 226 static int se_set_mode(struct se_softc *, int, int); 227 228 int se_enable(struct se_softc *); 229 void se_disable(struct se_softc *); 230 231 CFATTACH_DECL(se, sizeof(struct se_softc), 232 sematch, seattach, NULL, NULL); 233 234 extern struct cfdriver se_cd; 235 236 dev_type_open(seopen); 237 dev_type_close(seclose); 238 dev_type_ioctl(seioctl); 239 240 const struct cdevsw se_cdevsw = { 241 seopen, seclose, noread, nowrite, seioctl, 242 nostop, notty, nopoll, nommap, nokqfilter, 243 }; 244 245 const struct scsipi_periphsw se_switch = { 246 NULL, /* Use default error handler */ 247 sestart, /* have a queue, served by this */ 248 NULL, /* have no async handler */ 249 sedone, /* deal with stats at interrupt time */ 250 }; 251 252 const struct scsipi_inquiry_pattern se_patterns[] = { 253 {T_PROCESSOR, T_FIXED, 254 "CABLETRN", "EA412", ""}, 255 {T_PROCESSOR, T_FIXED, 256 "Cabletrn", "EA412", ""}, 257 }; 258 259 /* 260 * Compare two Ether/802 addresses for equality, inlined and 261 * unrolled for speed. 262 * Note: use this like memcmp() 263 */ 264 static inline u_int16_t 265 ether_cmp(one, two) 266 void *one, *two; 267 { 268 u_int16_t *a = (u_int16_t *) one; 269 u_int16_t *b = (u_int16_t *) two; 270 u_int16_t diff; 271 272 diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]); 273 274 return (diff); 275 } 276 277 #define ETHER_CMP ether_cmp 278 279 static int 280 sematch(parent, match, aux) 281 struct device *parent; 282 struct cfdata *match; 283 void *aux; 284 { 285 struct scsipibus_attach_args *sa = aux; 286 int priority; 287 288 (void)scsipi_inqmatch(&sa->sa_inqbuf, 289 se_patterns, sizeof(se_patterns) / sizeof(se_patterns[0]), 290 sizeof(se_patterns[0]), &priority); 291 return (priority); 292 } 293 294 /* 295 * The routine called by the low level scsi routine when it discovers 296 * a device suitable for this driver. 297 */ 298 static void 299 seattach(parent, self, aux) 300 struct device *parent, *self; 301 void *aux; 302 { 303 struct se_softc *sc = device_private(self); 304 struct scsipibus_attach_args *sa = aux; 305 struct scsipi_periph *periph = sa->sa_periph; 306 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 307 u_int8_t myaddr[ETHER_ADDR_LEN]; 308 309 printf("\n"); 310 SC_DEBUG(periph, SCSIPI_DB2, ("seattach: ")); 311 312 callout_init(&sc->sc_ifstart_ch); 313 callout_init(&sc->sc_recv_ch); 314 315 316 /* 317 * Store information needed to contact our base driver 318 */ 319 sc->sc_periph = periph; 320 periph->periph_dev = &sc->sc_dev; 321 periph->periph_switch = &se_switch; 322 323 /* XXX increase openings? */ 324 325 se_poll = (SE_POLL * hz) / 1000; 326 se_poll = se_poll? se_poll: 1; 327 se_poll0 = (SE_POLL0 * hz) / 1000; 328 se_poll0 = se_poll0? se_poll0: 1; 329 330 /* 331 * Initialize and attach a buffer 332 */ 333 sc->sc_tbuf = malloc(ETHERMTU + sizeof(struct ether_header), 334 M_DEVBUF, M_NOWAIT); 335 if (sc->sc_tbuf == 0) 336 panic("seattach: can't allocate transmit buffer"); 337 338 sc->sc_rbuf = malloc(RBUF_LEN, M_DEVBUF, M_NOWAIT);/* A Guess */ 339 if (sc->sc_rbuf == 0) 340 panic("seattach: can't allocate receive buffer"); 341 342 se_get_addr(sc, myaddr); 343 344 /* Initialize ifnet structure. */ 345 strlcpy(ifp->if_xname, sc->sc_dev.dv_xname, sizeof(ifp->if_xname)); 346 ifp->if_softc = sc; 347 ifp->if_start = se_ifstart; 348 ifp->if_ioctl = se_ioctl; 349 ifp->if_watchdog = sewatchdog; 350 ifp->if_flags = 351 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 352 IFQ_SET_READY(&ifp->if_snd); 353 354 /* Attach the interface. */ 355 if_attach(ifp); 356 ether_ifattach(ifp, myaddr); 357 } 358 359 360 static inline int 361 se_scsipi_cmd(periph, cmd, cmdlen, data_addr, datalen, 362 retries, timeout, bp, flags) 363 struct scsipi_periph *periph; 364 struct scsipi_generic *cmd; 365 int cmdlen; 366 u_char *data_addr; 367 int datalen; 368 int retries; 369 int timeout; 370 struct buf *bp; 371 int flags; 372 { 373 int error; 374 int s = splbio(); 375 376 error = scsipi_command(periph, cmd, cmdlen, data_addr, 377 datalen, retries, timeout, bp, flags); 378 splx(s); 379 return (error); 380 } 381 382 /* Start routine for calling from scsi sub system */ 383 static void 384 sestart(periph) 385 struct scsipi_periph *periph; 386 { 387 struct se_softc *sc = (void *)periph->periph_dev; 388 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 389 int s = splnet(); 390 391 se_ifstart(ifp); 392 (void) splx(s); 393 } 394 395 static void 396 se_delayed_ifstart(v) 397 void *v; 398 { 399 struct ifnet *ifp = v; 400 struct se_softc *sc = ifp->if_softc; 401 int s; 402 403 s = splnet(); 404 if (sc->sc_enabled) { 405 ifp->if_flags &= ~IFF_OACTIVE; 406 se_ifstart(ifp); 407 } 408 splx(s); 409 } 410 411 /* 412 * Start transmission on the interface. 413 * Always called at splnet(). 414 */ 415 static void 416 se_ifstart(ifp) 417 struct ifnet *ifp; 418 { 419 struct se_softc *sc = ifp->if_softc; 420 struct scsi_ctron_ether_generic send_cmd; 421 struct mbuf *m, *m0; 422 int len, error; 423 u_char *cp; 424 425 /* Don't transmit if interface is busy or not running */ 426 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 427 return; 428 429 IFQ_DEQUEUE(&ifp->if_snd, m0); 430 if (m0 == 0) 431 return; 432 #if NBPFILTER > 0 433 /* If BPF is listening on this interface, let it see the 434 * packet before we commit it to the wire. 435 */ 436 if (ifp->if_bpf) 437 bpf_mtap(ifp->if_bpf, m0); 438 #endif 439 440 /* We need to use m->m_pkthdr.len, so require the header */ 441 if ((m0->m_flags & M_PKTHDR) == 0) 442 panic("ctscstart: no header mbuf"); 443 len = m0->m_pkthdr.len; 444 445 /* Mark the interface busy. */ 446 ifp->if_flags |= IFF_OACTIVE; 447 448 /* Chain; copy into linear buffer we allocated at attach time. */ 449 cp = sc->sc_tbuf; 450 for (m = m0; m != NULL; ) { 451 memcpy(cp, mtod(m, u_char *), m->m_len); 452 cp += m->m_len; 453 MFREE(m, m0); 454 m = m0; 455 } 456 if (len < SEMINSIZE) { 457 #ifdef SEDEBUG 458 if (sc->sc_debug) 459 printf("se: packet size %d (%d) < %d\n", len, 460 cp - (u_char *)sc->sc_tbuf, SEMINSIZE); 461 #endif 462 memset(cp, 0, SEMINSIZE - len); 463 len = SEMINSIZE; 464 } 465 466 /* Fill out SCSI command. */ 467 PROTOCMD(ctron_ether_send, send_cmd); 468 _lto2b(len, send_cmd.length); 469 470 /* Send command to device. */ 471 error = se_scsipi_cmd(sc->sc_periph, 472 (void *)&send_cmd, sizeof(send_cmd), 473 sc->sc_tbuf, len, SERETRIES, 474 SETIMEOUT, NULL, XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_OUT); 475 if (error) { 476 printf("%s: not queued, error %d\n", 477 sc->sc_dev.dv_xname, error); 478 ifp->if_oerrors++; 479 ifp->if_flags &= ~IFF_OACTIVE; 480 } else 481 ifp->if_opackets++; 482 if (sc->sc_flags & SE_NEED_RECV) { 483 sc->sc_flags &= ~SE_NEED_RECV; 484 se_recv((void *) sc); 485 } 486 } 487 488 489 /* 490 * Called from the scsibus layer via our scsi device switch. 491 */ 492 static void 493 sedone(xs, error) 494 struct scsipi_xfer *xs; 495 int error; 496 { 497 struct se_softc *sc = (void *)xs->xs_periph->periph_dev; 498 struct scsipi_generic *cmd = xs->cmd; 499 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 500 int s; 501 502 s = splnet(); 503 if(IS_SEND(cmd)) { 504 if (xs->error == XS_BUSY) { 505 printf("se: busy, retry txmit\n"); 506 callout_reset(&sc->sc_ifstart_ch, hz, 507 se_delayed_ifstart, ifp); 508 } else { 509 ifp->if_flags &= ~IFF_OACTIVE; 510 /* the generic scsipi_done will call 511 * sestart (through scsipi_free_xs). 512 */ 513 } 514 } else if(IS_RECV(cmd)) { 515 /* RECV complete */ 516 /* pass data up. reschedule a recv */ 517 /* scsipi_free_xs will call start. Harmless. */ 518 if (error) { 519 /* Reschedule after a delay */ 520 callout_reset(&sc->sc_recv_ch, se_poll, 521 se_recv, (void *)sc); 522 } else { 523 int n, ntimeo; 524 n = se_read(sc, xs->data, xs->datalen - xs->resid); 525 if (n > se_max_received) 526 se_max_received = n; 527 if (n == 0) 528 ntimeo = se_poll; 529 else if (n >= RDATA_MAX) 530 ntimeo = se_poll0; 531 else { 532 ntimeo = sc->sc_last_timeout; 533 ntimeo = (ntimeo * RDATA_GOAL)/n; 534 ntimeo = (ntimeo < se_poll0? 535 se_poll0: ntimeo); 536 ntimeo = (ntimeo > se_poll? 537 se_poll: ntimeo); 538 } 539 sc->sc_last_timeout = ntimeo; 540 if (ntimeo == se_poll0 && 541 IFQ_IS_EMPTY(&ifp->if_snd) == 0) 542 /* Output is pending. Do next recv 543 * after the next send. */ 544 sc->sc_flags |= SE_NEED_RECV; 545 else { 546 callout_reset(&sc->sc_recv_ch, ntimeo, 547 se_recv, (void *)sc); 548 } 549 } 550 } 551 splx(s); 552 } 553 554 static void 555 se_recv(v) 556 void *v; 557 { 558 /* do a recv command */ 559 struct se_softc *sc = (struct se_softc *) v; 560 struct scsi_ctron_ether_recv recv_cmd; 561 int error; 562 563 if (sc->sc_enabled == 0) 564 return; 565 566 PROTOCMD(ctron_ether_recv, recv_cmd); 567 568 error = se_scsipi_cmd(sc->sc_periph, 569 (void *)&recv_cmd, sizeof(recv_cmd), 570 sc->sc_rbuf, RBUF_LEN, SERETRIES, SETIMEOUT, NULL, 571 XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_IN); 572 if (error) 573 callout_reset(&sc->sc_recv_ch, se_poll, se_recv, (void *)sc); 574 } 575 576 /* 577 * We copy the data into mbufs. When full cluster sized units are present 578 * we copy into clusters. 579 */ 580 static struct mbuf * 581 se_get(sc, data, totlen) 582 struct se_softc *sc; 583 char *data; 584 int totlen; 585 { 586 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 587 struct mbuf *m, *m0, *newm; 588 int len; 589 590 MGETHDR(m0, M_DONTWAIT, MT_DATA); 591 if (m0 == 0) 592 return (0); 593 m0->m_pkthdr.rcvif = ifp; 594 m0->m_pkthdr.len = totlen; 595 len = MHLEN; 596 m = m0; 597 598 while (totlen > 0) { 599 if (totlen >= MINCLSIZE) { 600 MCLGET(m, M_DONTWAIT); 601 if ((m->m_flags & M_EXT) == 0) 602 goto bad; 603 len = MCLBYTES; 604 } 605 606 if (m == m0) { 607 caddr_t newdata = (caddr_t) 608 ALIGN(m->m_data + sizeof(struct ether_header)) - 609 sizeof(struct ether_header); 610 len -= newdata - m->m_data; 611 m->m_data = newdata; 612 } 613 614 m->m_len = len = min(totlen, len); 615 memcpy(mtod(m, caddr_t), data, len); 616 data += len; 617 618 totlen -= len; 619 if (totlen > 0) { 620 MGET(newm, M_DONTWAIT, MT_DATA); 621 if (newm == 0) 622 goto bad; 623 len = MLEN; 624 m = m->m_next = newm; 625 } 626 } 627 628 return (m0); 629 630 bad: 631 m_freem(m0); 632 return (0); 633 } 634 635 /* 636 * Pass packets to higher levels. 637 */ 638 static int 639 se_read(sc, data, datalen) 640 struct se_softc *sc; 641 char *data; 642 int datalen; 643 { 644 struct mbuf *m; 645 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 646 int n; 647 648 n = 0; 649 while (datalen >= 2) { 650 int len = _2btol(data); 651 data += 2; 652 datalen -= 2; 653 654 if (len == 0) 655 break; 656 #ifdef SEDEBUG 657 if (sc->sc_debug) { 658 printf("se_read: datalen = %d, packetlen = %d, proto = 0x%04x\n", datalen, len, 659 ntohs(((struct ether_header *)data)->ether_type)); 660 } 661 #endif 662 if (len <= sizeof(struct ether_header) || 663 len > MAX_SNAP) { 664 #ifdef SEDEBUG 665 printf("%s: invalid packet size %d; dropping\n", 666 sc->sc_dev.dv_xname, len); 667 #endif 668 ifp->if_ierrors++; 669 goto next_packet; 670 } 671 672 /* Don't need crc. Must keep ether header for BPF */ 673 m = se_get(sc, data, len - ETHER_CRC); 674 if (m == 0) { 675 #ifdef SEDEBUG 676 if (sc->sc_debug) 677 printf("se_read: se_get returned null\n"); 678 #endif 679 ifp->if_ierrors++; 680 goto next_packet; 681 } 682 if ((ifp->if_flags & IFF_PROMISC) != 0) { 683 m_adj(m, SE_PREFIX); 684 } 685 ifp->if_ipackets++; 686 687 #if NBPFILTER > 0 688 /* 689 * Check if there's a BPF listener on this interface. 690 * If so, hand off the raw packet to BPF. 691 */ 692 if (ifp->if_bpf) 693 bpf_mtap(ifp->if_bpf, m); 694 #endif 695 696 /* Pass the packet up. */ 697 (*ifp->if_input)(ifp, m); 698 699 next_packet: 700 data += len; 701 datalen -= len; 702 n++; 703 } 704 return (n); 705 } 706 707 708 static void 709 sewatchdog(ifp) 710 struct ifnet *ifp; 711 { 712 struct se_softc *sc = ifp->if_softc; 713 714 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 715 ++ifp->if_oerrors; 716 717 se_reset(sc); 718 } 719 720 static int 721 se_reset(sc) 722 struct se_softc *sc; 723 { 724 int error; 725 int s = splnet(); 726 #if 0 727 /* Maybe we don't *really* want to reset the entire bus 728 * because the ctron isn't working. We would like to send a 729 * "BUS DEVICE RESET" message, but don't think the ctron 730 * understands it. 731 */ 732 error = se_scsipi_cmd(sc->sc_periph, 0, 0, 0, 0, SERETRIES, 2000, NULL, 733 XS_CTL_RESET); 734 #endif 735 error = se_init(sc); 736 splx(s); 737 return (error); 738 } 739 740 static int 741 se_add_proto(sc, proto) 742 struct se_softc *sc; 743 int proto; 744 { 745 int error; 746 struct scsi_ctron_ether_generic add_proto_cmd; 747 u_int8_t data[2]; 748 _lto2b(proto, data); 749 #ifdef SEDEBUG 750 if (sc->sc_debug) 751 printf("se: adding proto 0x%02x%02x\n", data[0], data[1]); 752 #endif 753 754 PROTOCMD(ctron_ether_add_proto, add_proto_cmd); 755 _lto2b(sizeof(data), add_proto_cmd.length); 756 error = se_scsipi_cmd(sc->sc_periph, 757 (void *)&add_proto_cmd, sizeof(add_proto_cmd), 758 data, sizeof(data), SERETRIES, SETIMEOUT, NULL, 759 XS_CTL_DATA_OUT | XS_CTL_DATA_ONSTACK); 760 return (error); 761 } 762 763 static int 764 se_get_addr(sc, myaddr) 765 struct se_softc *sc; 766 u_int8_t *myaddr; 767 { 768 int error; 769 struct scsi_ctron_ether_generic get_addr_cmd; 770 771 PROTOCMD(ctron_ether_get_addr, get_addr_cmd); 772 _lto2b(ETHER_ADDR_LEN, get_addr_cmd.length); 773 error = se_scsipi_cmd(sc->sc_periph, 774 (void *)&get_addr_cmd, sizeof(get_addr_cmd), 775 myaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 776 XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 777 printf("%s: ethernet address %s\n", sc->sc_dev.dv_xname, 778 ether_sprintf(myaddr)); 779 return (error); 780 } 781 782 783 static int 784 se_set_media(sc, type) 785 struct se_softc *sc; 786 int type; 787 { 788 int error; 789 struct scsi_ctron_ether_generic set_media_cmd; 790 791 PROTOCMD(ctron_ether_set_media, set_media_cmd); 792 set_media_cmd.byte3 = type; 793 error = se_scsipi_cmd(sc->sc_periph, 794 (void *)&set_media_cmd, sizeof(set_media_cmd), 795 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 796 return (error); 797 } 798 799 static int 800 se_set_mode(sc, len, mode) 801 struct se_softc *sc; 802 int len; 803 int mode; 804 { 805 int error; 806 struct scsi_ctron_ether_set_mode set_mode_cmd; 807 808 PROTOCMD(ctron_ether_set_mode, set_mode_cmd); 809 set_mode_cmd.mode = mode; 810 _lto2b(len, set_mode_cmd.length); 811 error = se_scsipi_cmd(sc->sc_periph, 812 (void *)&set_mode_cmd, sizeof(set_mode_cmd), 813 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 814 return (error); 815 } 816 817 818 static int 819 se_init(sc) 820 struct se_softc *sc; 821 { 822 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 823 struct scsi_ctron_ether_generic set_addr_cmd; 824 int error; 825 826 #if NBPFILTER > 0 827 if (ifp->if_flags & IFF_PROMISC) { 828 error = se_set_mode(sc, MAX_SNAP, 1); 829 } 830 else 831 #endif 832 error = se_set_mode(sc, ETHERMTU + sizeof(struct ether_header), 833 0); 834 if (error != 0) 835 return (error); 836 837 PROTOCMD(ctron_ether_set_addr, set_addr_cmd); 838 _lto2b(ETHER_ADDR_LEN, set_addr_cmd.length); 839 error = se_scsipi_cmd(sc->sc_periph, 840 (void *)&set_addr_cmd, sizeof(set_addr_cmd), 841 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 842 XS_CTL_DATA_OUT); 843 if (error != 0) 844 return (error); 845 846 if ((sc->protos & PROTO_IP) && 847 (error = se_add_proto(sc, ETHERTYPE_IP)) != 0) 848 return (error); 849 if ((sc->protos & PROTO_ARP) && 850 (error = se_add_proto(sc, ETHERTYPE_ARP)) != 0) 851 return (error); 852 if ((sc->protos & PROTO_REVARP) && 853 (error = se_add_proto(sc, ETHERTYPE_REVARP)) != 0) 854 return (error); 855 #ifdef NETATALK 856 if ((sc->protos & PROTO_AT) && 857 (error = se_add_proto(sc, ETHERTYPE_ATALK)) != 0) 858 return (error); 859 if ((sc->protos & PROTO_AARP) && 860 (error = se_add_proto(sc, ETHERTYPE_AARP)) != 0) 861 return (error); 862 #endif 863 864 if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) == IFF_UP) { 865 ifp->if_flags |= IFF_RUNNING; 866 se_recv(sc); 867 ifp->if_flags &= ~IFF_OACTIVE; 868 se_ifstart(ifp); 869 } 870 return (error); 871 } 872 873 static int 874 se_set_multi(sc, addr) 875 struct se_softc *sc; 876 u_int8_t *addr; 877 { 878 struct scsi_ctron_ether_generic set_multi_cmd; 879 int error; 880 881 if (sc->sc_debug) 882 printf("%s: set_set_multi: %s\n", sc->sc_dev.dv_xname, 883 ether_sprintf(addr)); 884 885 PROTOCMD(ctron_ether_set_multi, set_multi_cmd); 886 _lto2b(sizeof(addr), set_multi_cmd.length); 887 error = se_scsipi_cmd(sc->sc_periph, 888 (void *)&set_multi_cmd, sizeof(set_multi_cmd), 889 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 890 return (error); 891 } 892 893 static int 894 se_remove_multi(sc, addr) 895 struct se_softc *sc; 896 u_int8_t *addr; 897 { 898 struct scsi_ctron_ether_generic remove_multi_cmd; 899 int error; 900 901 if (sc->sc_debug) 902 printf("%s: se_remove_multi: %s\n", sc->sc_dev.dv_xname, 903 ether_sprintf(addr)); 904 905 PROTOCMD(ctron_ether_remove_multi, remove_multi_cmd); 906 _lto2b(sizeof(addr), remove_multi_cmd.length); 907 error = se_scsipi_cmd(sc->sc_periph, 908 (void *)&remove_multi_cmd, sizeof(remove_multi_cmd), 909 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 910 return (error); 911 } 912 913 #if 0 /* not used --thorpej */ 914 static int 915 sc_set_all_multi(sc, set) 916 struct se_softc *sc; 917 int set; 918 { 919 int error = 0; 920 u_int8_t *addr; 921 struct ethercom *ac = &sc->sc_ethercom; 922 struct ether_multi *enm; 923 struct ether_multistep step; 924 925 ETHER_FIRST_MULTI(step, ac, enm); 926 while (enm != NULL) { 927 if (ETHER_CMP(enm->enm_addrlo, enm->enm_addrhi)) { 928 /* 929 * We must listen to a range of multicast addresses. 930 * For now, just accept all multicasts, rather than 931 * trying to set only those filter bits needed to match 932 * the range. (At this time, the only use of address 933 * ranges is for IP multicast routing, for which the 934 * range is big enough to require all bits set.) 935 */ 936 /* We have no way of adding a range to this device. 937 * stepping through all addresses in the range is 938 * typically not possible. The only real alternative 939 * is to go into promicuous mode and filter by hand. 940 */ 941 return (ENODEV); 942 943 } 944 945 addr = enm->enm_addrlo; 946 if ((error = set ? se_set_multi(sc, addr) : 947 se_remove_multi(sc, addr)) != 0) 948 return (error); 949 ETHER_NEXT_MULTI(step, enm); 950 } 951 return (error); 952 } 953 #endif /* not used */ 954 955 static void 956 se_stop(sc) 957 struct se_softc *sc; 958 { 959 960 /* Don't schedule any reads */ 961 callout_stop(&sc->sc_recv_ch); 962 963 /* How can we abort any scsi cmds in progress? */ 964 } 965 966 967 /* 968 * Process an ioctl request. 969 */ 970 static int 971 se_ioctl(ifp, cmd, data) 972 struct ifnet *ifp; 973 u_long cmd; 974 caddr_t data; 975 { 976 struct se_softc *sc = ifp->if_softc; 977 struct ifaddr *ifa = (struct ifaddr *)data; 978 struct ifreq *ifr = (struct ifreq *)data; 979 int s, error = 0; 980 981 s = splnet(); 982 983 switch (cmd) { 984 985 case SIOCSIFADDR: 986 if ((error = se_enable(sc)) != 0) 987 break; 988 ifp->if_flags |= IFF_UP; 989 990 if ((error = se_set_media(sc, CMEDIA_AUTOSENSE) != 0)) 991 break; 992 993 switch (ifa->ifa_addr->sa_family) { 994 #ifdef INET 995 case AF_INET: 996 sc->protos |= (PROTO_IP | PROTO_ARP | PROTO_REVARP); 997 if ((error = se_init(sc)) != 0) 998 break; 999 arp_ifinit(ifp, ifa); 1000 break; 1001 #endif 1002 #ifdef NETATALK 1003 case AF_APPLETALK: 1004 sc->protos |= (PROTO_AT | PROTO_AARP); 1005 if ((error = se_init(sc)) != 0) 1006 break; 1007 break; 1008 #endif 1009 default: 1010 error = se_init(sc); 1011 break; 1012 } 1013 break; 1014 1015 1016 case SIOCSIFFLAGS: 1017 if ((ifp->if_flags & IFF_UP) == 0 && 1018 (ifp->if_flags & IFF_RUNNING) != 0) { 1019 /* 1020 * If interface is marked down and it is running, then 1021 * stop it. 1022 */ 1023 se_stop(sc); 1024 ifp->if_flags &= ~IFF_RUNNING; 1025 se_disable(sc); 1026 } else if ((ifp->if_flags & IFF_UP) != 0 && 1027 (ifp->if_flags & IFF_RUNNING) == 0) { 1028 /* 1029 * If interface is marked up and it is stopped, then 1030 * start it. 1031 */ 1032 if ((error = se_enable(sc)) != 0) 1033 break; 1034 error = se_init(sc); 1035 } else if (sc->sc_enabled) { 1036 /* 1037 * Reset the interface to pick up changes in any other 1038 * flags that affect hardware registers. 1039 */ 1040 error = se_init(sc); 1041 } 1042 #ifdef SEDEBUG 1043 if (ifp->if_flags & IFF_DEBUG) 1044 sc->sc_debug = 1; 1045 else 1046 sc->sc_debug = 0; 1047 #endif 1048 break; 1049 1050 case SIOCADDMULTI: 1051 case SIOCDELMULTI: 1052 error = (cmd == SIOCADDMULTI) ? 1053 ether_addmulti(ifr, &sc->sc_ethercom) : 1054 ether_delmulti(ifr, &sc->sc_ethercom); 1055 if (error == ENETRESET) { 1056 if (ifp->if_flags & IFF_RUNNING) { 1057 error = (cmd == SIOCADDMULTI) ? 1058 se_set_multi(sc, ifr->ifr_addr.sa_data) : 1059 se_remove_multi(sc, ifr->ifr_addr.sa_data); 1060 } else 1061 error = 0; 1062 } 1063 break; 1064 1065 default: 1066 1067 error = EINVAL; 1068 break; 1069 } 1070 1071 splx(s); 1072 return (error); 1073 } 1074 1075 /* 1076 * Enable the network interface. 1077 */ 1078 int 1079 se_enable(sc) 1080 struct se_softc *sc; 1081 { 1082 struct scsipi_periph *periph = sc->sc_periph; 1083 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1084 int error = 0; 1085 1086 if (sc->sc_enabled == 0 && 1087 (error = scsipi_adapter_addref(adapt)) == 0) 1088 sc->sc_enabled = 1; 1089 else 1090 printf("%s: device enable failed\n", 1091 sc->sc_dev.dv_xname); 1092 1093 return (error); 1094 } 1095 1096 /* 1097 * Disable the network interface. 1098 */ 1099 void 1100 se_disable(sc) 1101 struct se_softc *sc; 1102 { 1103 struct scsipi_periph *periph = sc->sc_periph; 1104 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1105 1106 if (sc->sc_enabled != 0) { 1107 scsipi_adapter_delref(adapt); 1108 sc->sc_enabled = 0; 1109 } 1110 } 1111 1112 #define SEUNIT(z) (minor(z)) 1113 /* 1114 * open the device. 1115 */ 1116 int 1117 seopen(dev, flag, fmt, l) 1118 dev_t dev; 1119 int flag, fmt; 1120 struct lwp *l; 1121 { 1122 int unit, error; 1123 struct se_softc *sc; 1124 struct scsipi_periph *periph; 1125 struct scsipi_adapter *adapt; 1126 1127 unit = SEUNIT(dev); 1128 if (unit >= se_cd.cd_ndevs) 1129 return (ENXIO); 1130 sc = se_cd.cd_devs[unit]; 1131 if (sc == NULL) 1132 return (ENXIO); 1133 1134 periph = sc->sc_periph; 1135 adapt = periph->periph_channel->chan_adapter; 1136 1137 if ((error = scsipi_adapter_addref(adapt)) != 0) 1138 return (error); 1139 1140 SC_DEBUG(periph, SCSIPI_DB1, 1141 ("scopen: dev=0x%x (unit %d (of %d))\n", dev, unit, 1142 se_cd.cd_ndevs)); 1143 1144 periph->periph_flags |= PERIPH_OPEN; 1145 1146 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 1147 return (0); 1148 } 1149 1150 /* 1151 * close the device.. only called if we are the LAST 1152 * occurence of an open device 1153 */ 1154 int 1155 seclose(dev, flag, fmt, l) 1156 dev_t dev; 1157 int flag, fmt; 1158 struct lwp *l; 1159 { 1160 struct se_softc *sc = se_cd.cd_devs[SEUNIT(dev)]; 1161 struct scsipi_periph *periph = sc->sc_periph; 1162 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1163 1164 SC_DEBUG(sc->sc_periph, SCSIPI_DB1, ("closing\n")); 1165 1166 scsipi_wait_drain(periph); 1167 1168 scsipi_adapter_delref(adapt); 1169 periph->periph_flags &= ~PERIPH_OPEN; 1170 1171 return (0); 1172 } 1173 1174 /* 1175 * Perform special action on behalf of the user 1176 * Only does generic scsi ioctls. 1177 */ 1178 int 1179 seioctl(dev, cmd, addr, flag, l) 1180 dev_t dev; 1181 u_long cmd; 1182 caddr_t addr; 1183 int flag; 1184 struct lwp *l; 1185 { 1186 struct se_softc *sc = se_cd.cd_devs[SEUNIT(dev)]; 1187 1188 return (scsipi_do_ioctl(sc->sc_periph, dev, cmd, addr, flag, l)); 1189 }
Cache object: 7f4992544b70ffb34d2a8d9be41f0b55
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