1 /* $NetBSD: if_se.c,v 1.78 2009/05/12 14:44:31 cegger 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 1.78 2009/05/12 14:44:31 cegger 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) \ 154 static const struct scsi_ctron_ether_generic name 155 156 #define PROTOCMD_DECL_SPECIAL(name) \ 157 static const struct __CONCAT(scsi_,name) name 158 159 /* Command initializers for commands using scsi_ctron_ether_generic */ 160 PROTOCMD_DECL(ctron_ether_send) = {CTRON_ETHER_SEND, 0, {0,0}, 0}; 161 PROTOCMD_DECL(ctron_ether_add_proto) = {CTRON_ETHER_ADD_PROTO, 0, {0,0}, 0}; 162 PROTOCMD_DECL(ctron_ether_get_addr) = {CTRON_ETHER_GET_ADDR, 0, {0,0}, 0}; 163 PROTOCMD_DECL(ctron_ether_set_media) = {CTRON_ETHER_SET_MEDIA, 0, {0,0}, 0}; 164 PROTOCMD_DECL(ctron_ether_set_addr) = {CTRON_ETHER_SET_ADDR, 0, {0,0}, 0}; 165 PROTOCMD_DECL(ctron_ether_set_multi) = {CTRON_ETHER_SET_MULTI, 0, {0,0}, 0}; 166 PROTOCMD_DECL(ctron_ether_remove_multi) = 167 {CTRON_ETHER_REMOVE_MULTI, 0, {0,0}, 0}; 168 169 /* Command initializers for commands using their own structures */ 170 PROTOCMD_DECL_SPECIAL(ctron_ether_recv) = {CTRON_ETHER_RECV}; 171 PROTOCMD_DECL_SPECIAL(ctron_ether_set_mode) = 172 {CTRON_ETHER_SET_MODE, 0, {0,0}, 0}; 173 174 struct se_softc { 175 struct device sc_dev; 176 struct ethercom sc_ethercom; /* Ethernet common part */ 177 struct scsipi_periph *sc_periph;/* contains our targ, lun, etc. */ 178 179 struct callout sc_ifstart_ch; 180 struct callout sc_recv_ch; 181 182 char *sc_tbuf; 183 char *sc_rbuf; 184 int protos; 185 #define PROTO_IP 0x01 186 #define PROTO_ARP 0x02 187 #define PROTO_REVARP 0x04 188 #define PROTO_AT 0x08 189 #define PROTO_AARP 0x10 190 int sc_debug; 191 int sc_flags; 192 #define SE_NEED_RECV 0x1 193 int sc_last_timeout; 194 int sc_enabled; 195 }; 196 197 static int sematch(device_t, cfdata_t, void *); 198 static void seattach(device_t, device_t, void *); 199 200 static void se_ifstart(struct ifnet *); 201 static void sestart(struct scsipi_periph *); 202 203 static void sedone(struct scsipi_xfer *, int); 204 static int se_ioctl(struct ifnet *, u_long, void *); 205 static void sewatchdog(struct ifnet *); 206 207 static inline u_int16_t ether_cmp(void *, void *); 208 static void se_recv(void *); 209 static struct mbuf *se_get(struct se_softc *, char *, int); 210 static int se_read(struct se_softc *, char *, int); 211 static int se_reset(struct se_softc *); 212 static int se_add_proto(struct se_softc *, int); 213 static int se_get_addr(struct se_softc *, u_int8_t *); 214 static int se_set_media(struct se_softc *, int); 215 static int se_init(struct se_softc *); 216 static int se_set_multi(struct se_softc *, u_int8_t *); 217 static int se_remove_multi(struct se_softc *, u_int8_t *); 218 #if 0 219 static int sc_set_all_multi(struct se_softc *, int); 220 #endif 221 static void se_stop(struct se_softc *); 222 static inline int se_scsipi_cmd(struct scsipi_periph *periph, 223 struct scsipi_generic *scsipi_cmd, 224 int cmdlen, u_char *data_addr, int datalen, 225 int retries, int timeout, struct buf *bp, 226 int flags); 227 static void se_delayed_ifstart(void *); 228 static int se_set_mode(struct se_softc *, int, int); 229 230 int se_enable(struct se_softc *); 231 void se_disable(struct se_softc *); 232 233 CFATTACH_DECL(se, sizeof(struct se_softc), 234 sematch, seattach, NULL, NULL); 235 236 extern struct cfdriver se_cd; 237 238 dev_type_open(seopen); 239 dev_type_close(seclose); 240 dev_type_ioctl(seioctl); 241 242 const struct cdevsw se_cdevsw = { 243 seopen, seclose, noread, nowrite, seioctl, 244 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER 245 }; 246 247 const struct scsipi_periphsw se_switch = { 248 NULL, /* Use default error handler */ 249 sestart, /* have a queue, served by this */ 250 NULL, /* have no async handler */ 251 sedone, /* deal with stats at interrupt time */ 252 }; 253 254 const struct scsipi_inquiry_pattern se_patterns[] = { 255 {T_PROCESSOR, T_FIXED, 256 "CABLETRN", "EA412", ""}, 257 {T_PROCESSOR, T_FIXED, 258 "Cabletrn", "EA412", ""}, 259 }; 260 261 /* 262 * Compare two Ether/802 addresses for equality, inlined and 263 * unrolled for speed. 264 * Note: use this like memcmp() 265 */ 266 static inline u_int16_t 267 ether_cmp(void *one, void *two) 268 { 269 u_int16_t *a = (u_int16_t *) one; 270 u_int16_t *b = (u_int16_t *) two; 271 u_int16_t diff; 272 273 diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]); 274 275 return (diff); 276 } 277 278 #define ETHER_CMP ether_cmp 279 280 static int 281 sematch(device_t parent, cfdata_t match, void *aux) 282 { 283 struct scsipibus_attach_args *sa = aux; 284 int priority; 285 286 (void)scsipi_inqmatch(&sa->sa_inqbuf, 287 se_patterns, sizeof(se_patterns) / sizeof(se_patterns[0]), 288 sizeof(se_patterns[0]), &priority); 289 return (priority); 290 } 291 292 /* 293 * The routine called by the low level scsi routine when it discovers 294 * a device suitable for this driver. 295 */ 296 static void 297 seattach(device_t parent, device_t self, void *aux) 298 { 299 struct se_softc *sc = device_private(self); 300 struct scsipibus_attach_args *sa = aux; 301 struct scsipi_periph *periph = sa->sa_periph; 302 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 303 u_int8_t myaddr[ETHER_ADDR_LEN]; 304 305 printf("\n"); 306 SC_DEBUG(periph, SCSIPI_DB2, ("seattach: ")); 307 308 callout_init(&sc->sc_ifstart_ch, 0); 309 callout_init(&sc->sc_recv_ch, 0); 310 311 312 /* 313 * Store information needed to contact our base driver 314 */ 315 sc->sc_periph = periph; 316 periph->periph_dev = &sc->sc_dev; 317 periph->periph_switch = &se_switch; 318 319 /* XXX increase openings? */ 320 321 se_poll = (SE_POLL * hz) / 1000; 322 se_poll = se_poll? se_poll: 1; 323 se_poll0 = (SE_POLL0 * hz) / 1000; 324 se_poll0 = se_poll0? se_poll0: 1; 325 326 /* 327 * Initialize and attach a buffer 328 */ 329 sc->sc_tbuf = malloc(ETHERMTU + sizeof(struct ether_header), 330 M_DEVBUF, M_NOWAIT); 331 if (sc->sc_tbuf == 0) 332 panic("seattach: can't allocate transmit buffer"); 333 334 sc->sc_rbuf = malloc(RBUF_LEN, M_DEVBUF, M_NOWAIT);/* A Guess */ 335 if (sc->sc_rbuf == 0) 336 panic("seattach: can't allocate receive buffer"); 337 338 se_get_addr(sc, myaddr); 339 340 /* Initialize ifnet structure. */ 341 strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), sizeof(ifp->if_xname)); 342 ifp->if_softc = sc; 343 ifp->if_start = se_ifstart; 344 ifp->if_ioctl = se_ioctl; 345 ifp->if_watchdog = sewatchdog; 346 ifp->if_flags = 347 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 348 IFQ_SET_READY(&ifp->if_snd); 349 350 /* Attach the interface. */ 351 if_attach(ifp); 352 ether_ifattach(ifp, myaddr); 353 } 354 355 356 static inline int 357 se_scsipi_cmd(periph, cmd, cmdlen, data_addr, datalen, 358 retries, timeout, bp, flags) 359 struct scsipi_periph *periph; 360 struct scsipi_generic *cmd; 361 int cmdlen; 362 u_char *data_addr; 363 int datalen; 364 int retries; 365 int timeout; 366 struct buf *bp; 367 int flags; 368 { 369 int error; 370 int s = splbio(); 371 372 error = scsipi_command(periph, cmd, cmdlen, data_addr, 373 datalen, retries, timeout, bp, flags); 374 splx(s); 375 return (error); 376 } 377 378 /* Start routine for calling from scsi sub system */ 379 static void 380 sestart(struct scsipi_periph *periph) 381 { 382 struct se_softc *sc = (void *)periph->periph_dev; 383 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 384 int s = splnet(); 385 386 se_ifstart(ifp); 387 (void) splx(s); 388 } 389 390 static void 391 se_delayed_ifstart(void *v) 392 { 393 struct ifnet *ifp = v; 394 struct se_softc *sc = ifp->if_softc; 395 int s; 396 397 s = splnet(); 398 if (sc->sc_enabled) { 399 ifp->if_flags &= ~IFF_OACTIVE; 400 se_ifstart(ifp); 401 } 402 splx(s); 403 } 404 405 /* 406 * Start transmission on the interface. 407 * Always called at splnet(). 408 */ 409 static void 410 se_ifstart(struct ifnet *ifp) 411 { 412 struct se_softc *sc = ifp->if_softc; 413 struct scsi_ctron_ether_generic send_cmd; 414 struct mbuf *m, *m0; 415 int len, error; 416 u_char *cp; 417 418 /* Don't transmit if interface is busy or not running */ 419 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 420 return; 421 422 IFQ_DEQUEUE(&ifp->if_snd, m0); 423 if (m0 == 0) 424 return; 425 #if NBPFILTER > 0 426 /* If BPF is listening on this interface, let it see the 427 * packet before we commit it to the wire. 428 */ 429 if (ifp->if_bpf) 430 bpf_mtap(ifp->if_bpf, m0); 431 #endif 432 433 /* We need to use m->m_pkthdr.len, so require the header */ 434 if ((m0->m_flags & M_PKTHDR) == 0) 435 panic("ctscstart: no header mbuf"); 436 len = m0->m_pkthdr.len; 437 438 /* Mark the interface busy. */ 439 ifp->if_flags |= IFF_OACTIVE; 440 441 /* Chain; copy into linear buffer we allocated at attach time. */ 442 cp = sc->sc_tbuf; 443 for (m = m0; m != NULL; ) { 444 memcpy(cp, mtod(m, u_char *), m->m_len); 445 cp += m->m_len; 446 MFREE(m, m0); 447 m = m0; 448 } 449 if (len < SEMINSIZE) { 450 #ifdef SEDEBUG 451 if (sc->sc_debug) 452 printf("se: packet size %d (%d) < %d\n", len, 453 cp - (u_char *)sc->sc_tbuf, SEMINSIZE); 454 #endif 455 memset(cp, 0, SEMINSIZE - len); 456 len = SEMINSIZE; 457 } 458 459 /* Fill out SCSI command. */ 460 PROTOCMD(ctron_ether_send, send_cmd); 461 _lto2b(len, send_cmd.length); 462 463 /* Send command to device. */ 464 error = se_scsipi_cmd(sc->sc_periph, 465 (void *)&send_cmd, sizeof(send_cmd), 466 sc->sc_tbuf, len, SERETRIES, 467 SETIMEOUT, NULL, XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_OUT); 468 if (error) { 469 aprint_error_dev(&sc->sc_dev, "not queued, error %d\n", error); 470 ifp->if_oerrors++; 471 ifp->if_flags &= ~IFF_OACTIVE; 472 } else 473 ifp->if_opackets++; 474 if (sc->sc_flags & SE_NEED_RECV) { 475 sc->sc_flags &= ~SE_NEED_RECV; 476 se_recv((void *) sc); 477 } 478 } 479 480 481 /* 482 * Called from the scsibus layer via our scsi device switch. 483 */ 484 static void 485 sedone(struct scsipi_xfer *xs, int error) 486 { 487 struct se_softc *sc = (void *)xs->xs_periph->periph_dev; 488 struct scsipi_generic *cmd = xs->cmd; 489 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 490 int s; 491 492 s = splnet(); 493 if(IS_SEND(cmd)) { 494 if (xs->error == XS_BUSY) { 495 printf("se: busy, retry txmit\n"); 496 callout_reset(&sc->sc_ifstart_ch, hz, 497 se_delayed_ifstart, ifp); 498 } else { 499 ifp->if_flags &= ~IFF_OACTIVE; 500 /* the generic scsipi_done will call 501 * sestart (through scsipi_free_xs). 502 */ 503 } 504 } else if(IS_RECV(cmd)) { 505 /* RECV complete */ 506 /* pass data up. reschedule a recv */ 507 /* scsipi_free_xs will call start. Harmless. */ 508 if (error) { 509 /* Reschedule after a delay */ 510 callout_reset(&sc->sc_recv_ch, se_poll, 511 se_recv, (void *)sc); 512 } else { 513 int n, ntimeo; 514 n = se_read(sc, xs->data, xs->datalen - xs->resid); 515 if (n > se_max_received) 516 se_max_received = n; 517 if (n == 0) 518 ntimeo = se_poll; 519 else if (n >= RDATA_MAX) 520 ntimeo = se_poll0; 521 else { 522 ntimeo = sc->sc_last_timeout; 523 ntimeo = (ntimeo * RDATA_GOAL)/n; 524 ntimeo = (ntimeo < se_poll0? 525 se_poll0: ntimeo); 526 ntimeo = (ntimeo > se_poll? 527 se_poll: ntimeo); 528 } 529 sc->sc_last_timeout = ntimeo; 530 if (ntimeo == se_poll0 && 531 IFQ_IS_EMPTY(&ifp->if_snd) == 0) 532 /* Output is pending. Do next recv 533 * after the next send. */ 534 sc->sc_flags |= SE_NEED_RECV; 535 else { 536 callout_reset(&sc->sc_recv_ch, ntimeo, 537 se_recv, (void *)sc); 538 } 539 } 540 } 541 splx(s); 542 } 543 544 static void 545 se_recv(void *v) 546 { 547 /* do a recv command */ 548 struct se_softc *sc = (struct se_softc *) v; 549 struct scsi_ctron_ether_recv recv_cmd; 550 int error; 551 552 if (sc->sc_enabled == 0) 553 return; 554 555 PROTOCMD(ctron_ether_recv, recv_cmd); 556 557 error = se_scsipi_cmd(sc->sc_periph, 558 (void *)&recv_cmd, sizeof(recv_cmd), 559 sc->sc_rbuf, RBUF_LEN, SERETRIES, SETIMEOUT, NULL, 560 XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_IN); 561 if (error) 562 callout_reset(&sc->sc_recv_ch, se_poll, se_recv, (void *)sc); 563 } 564 565 /* 566 * We copy the data into mbufs. When full cluster sized units are present 567 * we copy into clusters. 568 */ 569 static struct mbuf * 570 se_get(struct se_softc *sc, char *data, int totlen) 571 { 572 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 573 struct mbuf *m, *m0, *newm; 574 int len; 575 576 MGETHDR(m0, M_DONTWAIT, MT_DATA); 577 if (m0 == 0) 578 return (0); 579 m0->m_pkthdr.rcvif = ifp; 580 m0->m_pkthdr.len = totlen; 581 len = MHLEN; 582 m = m0; 583 584 while (totlen > 0) { 585 if (totlen >= MINCLSIZE) { 586 MCLGET(m, M_DONTWAIT); 587 if ((m->m_flags & M_EXT) == 0) 588 goto bad; 589 len = MCLBYTES; 590 } 591 592 if (m == m0) { 593 char *newdata = (char *) 594 ALIGN(m->m_data + sizeof(struct ether_header)) - 595 sizeof(struct ether_header); 596 len -= newdata - m->m_data; 597 m->m_data = newdata; 598 } 599 600 m->m_len = len = min(totlen, len); 601 memcpy(mtod(m, void *), data, len); 602 data += len; 603 604 totlen -= len; 605 if (totlen > 0) { 606 MGET(newm, M_DONTWAIT, MT_DATA); 607 if (newm == 0) 608 goto bad; 609 len = MLEN; 610 m = m->m_next = newm; 611 } 612 } 613 614 return (m0); 615 616 bad: 617 m_freem(m0); 618 return (0); 619 } 620 621 /* 622 * Pass packets to higher levels. 623 */ 624 static int 625 se_read(struct se_softc *sc, char *data, int datalen) 626 { 627 struct mbuf *m; 628 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 629 int n; 630 631 n = 0; 632 while (datalen >= 2) { 633 int len = _2btol(data); 634 data += 2; 635 datalen -= 2; 636 637 if (len == 0) 638 break; 639 #ifdef SEDEBUG 640 if (sc->sc_debug) { 641 printf("se_read: datalen = %d, packetlen = %d, proto = 0x%04x\n", datalen, len, 642 ntohs(((struct ether_header *)data)->ether_type)); 643 } 644 #endif 645 if (len <= sizeof(struct ether_header) || 646 len > MAX_SNAP) { 647 #ifdef SEDEBUG 648 printf("%s: invalid packet size %d; dropping\n", 649 device_xname(&sc->sc_dev), len); 650 #endif 651 ifp->if_ierrors++; 652 goto next_packet; 653 } 654 655 /* Don't need crc. Must keep ether header for BPF */ 656 m = se_get(sc, data, len - ETHER_CRC); 657 if (m == 0) { 658 #ifdef SEDEBUG 659 if (sc->sc_debug) 660 printf("se_read: se_get returned null\n"); 661 #endif 662 ifp->if_ierrors++; 663 goto next_packet; 664 } 665 if ((ifp->if_flags & IFF_PROMISC) != 0) { 666 m_adj(m, SE_PREFIX); 667 } 668 ifp->if_ipackets++; 669 670 #if NBPFILTER > 0 671 /* 672 * Check if there's a BPF listener on this interface. 673 * If so, hand off the raw packet to BPF. 674 */ 675 if (ifp->if_bpf) 676 bpf_mtap(ifp->if_bpf, m); 677 #endif 678 679 /* Pass the packet up. */ 680 (*ifp->if_input)(ifp, m); 681 682 next_packet: 683 data += len; 684 datalen -= len; 685 n++; 686 } 687 return (n); 688 } 689 690 691 static void 692 sewatchdog(struct ifnet *ifp) 693 { 694 struct se_softc *sc = ifp->if_softc; 695 696 log(LOG_ERR, "%s: device timeout\n", device_xname(&sc->sc_dev)); 697 ++ifp->if_oerrors; 698 699 se_reset(sc); 700 } 701 702 static int 703 se_reset(struct se_softc *sc) 704 { 705 int error; 706 int s = splnet(); 707 #if 0 708 /* Maybe we don't *really* want to reset the entire bus 709 * because the ctron isn't working. We would like to send a 710 * "BUS DEVICE RESET" message, but don't think the ctron 711 * understands it. 712 */ 713 error = se_scsipi_cmd(sc->sc_periph, 0, 0, 0, 0, SERETRIES, 2000, NULL, 714 XS_CTL_RESET); 715 #endif 716 error = se_init(sc); 717 splx(s); 718 return (error); 719 } 720 721 static int 722 se_add_proto(struct se_softc *sc, int proto) 723 { 724 int error; 725 struct scsi_ctron_ether_generic add_proto_cmd; 726 u_int8_t data[2]; 727 _lto2b(proto, data); 728 #ifdef SEDEBUG 729 if (sc->sc_debug) 730 printf("se: adding proto 0x%02x%02x\n", data[0], data[1]); 731 #endif 732 733 PROTOCMD(ctron_ether_add_proto, add_proto_cmd); 734 _lto2b(sizeof(data), add_proto_cmd.length); 735 error = se_scsipi_cmd(sc->sc_periph, 736 (void *)&add_proto_cmd, sizeof(add_proto_cmd), 737 data, sizeof(data), SERETRIES, SETIMEOUT, NULL, 738 XS_CTL_DATA_OUT | XS_CTL_DATA_ONSTACK); 739 return (error); 740 } 741 742 static int 743 se_get_addr(struct se_softc *sc, u_int8_t *myaddr) 744 { 745 int error; 746 struct scsi_ctron_ether_generic get_addr_cmd; 747 748 PROTOCMD(ctron_ether_get_addr, get_addr_cmd); 749 _lto2b(ETHER_ADDR_LEN, get_addr_cmd.length); 750 error = se_scsipi_cmd(sc->sc_periph, 751 (void *)&get_addr_cmd, sizeof(get_addr_cmd), 752 myaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 753 XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 754 printf("%s: ethernet address %s\n", device_xname(&sc->sc_dev), 755 ether_sprintf(myaddr)); 756 return (error); 757 } 758 759 760 static int 761 se_set_media(struct se_softc *sc, int type) 762 { 763 int error; 764 struct scsi_ctron_ether_generic set_media_cmd; 765 766 PROTOCMD(ctron_ether_set_media, set_media_cmd); 767 set_media_cmd.byte3 = type; 768 error = se_scsipi_cmd(sc->sc_periph, 769 (void *)&set_media_cmd, sizeof(set_media_cmd), 770 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 771 return (error); 772 } 773 774 static int 775 se_set_mode(struct se_softc *sc, int len, int mode) 776 { 777 int error; 778 struct scsi_ctron_ether_set_mode set_mode_cmd; 779 780 PROTOCMD(ctron_ether_set_mode, set_mode_cmd); 781 set_mode_cmd.mode = mode; 782 _lto2b(len, set_mode_cmd.length); 783 error = se_scsipi_cmd(sc->sc_periph, 784 (void *)&set_mode_cmd, sizeof(set_mode_cmd), 785 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 786 return (error); 787 } 788 789 790 static int 791 se_init(struct se_softc *sc) 792 { 793 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 794 struct scsi_ctron_ether_generic set_addr_cmd; 795 uint8_t enaddr[ETHER_ADDR_LEN]; 796 int error; 797 798 #if NBPFILTER > 0 799 if (ifp->if_flags & IFF_PROMISC) { 800 error = se_set_mode(sc, MAX_SNAP, 1); 801 } 802 else 803 #endif 804 error = se_set_mode(sc, ETHERMTU + sizeof(struct ether_header), 805 0); 806 if (error != 0) 807 return (error); 808 809 PROTOCMD(ctron_ether_set_addr, set_addr_cmd); 810 _lto2b(ETHER_ADDR_LEN, set_addr_cmd.length); 811 memcpy(enaddr, CLLADDR(ifp->if_sadl), sizeof(enaddr)); 812 error = se_scsipi_cmd(sc->sc_periph, 813 (void *)&set_addr_cmd, sizeof(set_addr_cmd), 814 enaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 815 XS_CTL_DATA_OUT); 816 if (error != 0) 817 return (error); 818 819 if ((sc->protos & PROTO_IP) && 820 (error = se_add_proto(sc, ETHERTYPE_IP)) != 0) 821 return (error); 822 if ((sc->protos & PROTO_ARP) && 823 (error = se_add_proto(sc, ETHERTYPE_ARP)) != 0) 824 return (error); 825 if ((sc->protos & PROTO_REVARP) && 826 (error = se_add_proto(sc, ETHERTYPE_REVARP)) != 0) 827 return (error); 828 #ifdef NETATALK 829 if ((sc->protos & PROTO_AT) && 830 (error = se_add_proto(sc, ETHERTYPE_ATALK)) != 0) 831 return (error); 832 if ((sc->protos & PROTO_AARP) && 833 (error = se_add_proto(sc, ETHERTYPE_AARP)) != 0) 834 return (error); 835 #endif 836 837 if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) == IFF_UP) { 838 ifp->if_flags |= IFF_RUNNING; 839 se_recv(sc); 840 ifp->if_flags &= ~IFF_OACTIVE; 841 se_ifstart(ifp); 842 } 843 return (error); 844 } 845 846 static int 847 se_set_multi(struct se_softc *sc, u_int8_t *addr) 848 { 849 struct scsi_ctron_ether_generic set_multi_cmd; 850 int error; 851 852 if (sc->sc_debug) 853 printf("%s: set_set_multi: %s\n", device_xname(&sc->sc_dev), 854 ether_sprintf(addr)); 855 856 PROTOCMD(ctron_ether_set_multi, set_multi_cmd); 857 _lto2b(sizeof(addr), set_multi_cmd.length); 858 /* XXX sizeof(addr) is the size of the pointer. Surely it 859 * is too small? --dyoung 860 */ 861 error = se_scsipi_cmd(sc->sc_periph, 862 (void *)&set_multi_cmd, sizeof(set_multi_cmd), 863 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 864 return (error); 865 } 866 867 static int 868 se_remove_multi(struct se_softc *sc, u_int8_t *addr) 869 { 870 struct scsi_ctron_ether_generic remove_multi_cmd; 871 int error; 872 873 if (sc->sc_debug) 874 printf("%s: se_remove_multi: %s\n", device_xname(&sc->sc_dev), 875 ether_sprintf(addr)); 876 877 PROTOCMD(ctron_ether_remove_multi, remove_multi_cmd); 878 _lto2b(sizeof(addr), remove_multi_cmd.length); 879 /* XXX sizeof(addr) is the size of the pointer. Surely it 880 * is too small? --dyoung 881 */ 882 error = se_scsipi_cmd(sc->sc_periph, 883 (void *)&remove_multi_cmd, sizeof(remove_multi_cmd), 884 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 885 return (error); 886 } 887 888 #if 0 /* not used --thorpej */ 889 static int 890 sc_set_all_multi(struct se_softc *sc, int set) 891 { 892 int error = 0; 893 u_int8_t *addr; 894 struct ethercom *ac = &sc->sc_ethercom; 895 struct ether_multi *enm; 896 struct ether_multistep step; 897 898 ETHER_FIRST_MULTI(step, ac, enm); 899 while (enm != NULL) { 900 if (ETHER_CMP(enm->enm_addrlo, enm->enm_addrhi)) { 901 /* 902 * We must listen to a range of multicast addresses. 903 * For now, just accept all multicasts, rather than 904 * trying to set only those filter bits needed to match 905 * the range. (At this time, the only use of address 906 * ranges is for IP multicast routing, for which the 907 * range is big enough to require all bits set.) 908 */ 909 /* We have no way of adding a range to this device. 910 * stepping through all addresses in the range is 911 * typically not possible. The only real alternative 912 * is to go into promicuous mode and filter by hand. 913 */ 914 return (ENODEV); 915 916 } 917 918 addr = enm->enm_addrlo; 919 if ((error = set ? se_set_multi(sc, addr) : 920 se_remove_multi(sc, addr)) != 0) 921 return (error); 922 ETHER_NEXT_MULTI(step, enm); 923 } 924 return (error); 925 } 926 #endif /* not used */ 927 928 static void 929 se_stop(struct se_softc *sc) 930 { 931 932 /* Don't schedule any reads */ 933 callout_stop(&sc->sc_recv_ch); 934 935 /* How can we abort any scsi cmds in progress? */ 936 } 937 938 939 /* 940 * Process an ioctl request. 941 */ 942 static int 943 se_ioctl(struct ifnet *ifp, u_long cmd, void *data) 944 { 945 struct se_softc *sc = ifp->if_softc; 946 struct ifaddr *ifa = (struct ifaddr *)data; 947 struct ifreq *ifr = (struct ifreq *)data; 948 struct sockaddr *sa; 949 int s, error = 0; 950 951 s = splnet(); 952 953 switch (cmd) { 954 955 case SIOCINITIFADDR: 956 if ((error = se_enable(sc)) != 0) 957 break; 958 ifp->if_flags |= IFF_UP; 959 960 if ((error = se_set_media(sc, CMEDIA_AUTOSENSE) != 0)) 961 break; 962 963 switch (ifa->ifa_addr->sa_family) { 964 #ifdef INET 965 case AF_INET: 966 sc->protos |= (PROTO_IP | PROTO_ARP | PROTO_REVARP); 967 if ((error = se_init(sc)) != 0) 968 break; 969 arp_ifinit(ifp, ifa); 970 break; 971 #endif 972 #ifdef NETATALK 973 case AF_APPLETALK: 974 sc->protos |= (PROTO_AT | PROTO_AARP); 975 if ((error = se_init(sc)) != 0) 976 break; 977 break; 978 #endif 979 default: 980 error = se_init(sc); 981 break; 982 } 983 break; 984 985 986 case SIOCSIFFLAGS: 987 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 988 break; 989 /* XXX re-use ether_ioctl() */ 990 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 991 case IFF_RUNNING: 992 /* 993 * If interface is marked down and it is running, then 994 * stop it. 995 */ 996 se_stop(sc); 997 ifp->if_flags &= ~IFF_RUNNING; 998 se_disable(sc); 999 break; 1000 case IFF_UP: 1001 /* 1002 * If interface is marked up and it is stopped, then 1003 * start it. 1004 */ 1005 if ((error = se_enable(sc)) != 0) 1006 break; 1007 error = se_init(sc); 1008 break; 1009 default: 1010 /* 1011 * Reset the interface to pick up changes in any other 1012 * flags that affect hardware registers. 1013 */ 1014 if (sc->sc_enabled) 1015 error = se_init(sc); 1016 break; 1017 } 1018 #ifdef SEDEBUG 1019 if (ifp->if_flags & IFF_DEBUG) 1020 sc->sc_debug = 1; 1021 else 1022 sc->sc_debug = 0; 1023 #endif 1024 break; 1025 1026 case SIOCADDMULTI: 1027 case SIOCDELMULTI: 1028 sa = sockaddr_dup(ifreq_getaddr(cmd, ifr), M_NOWAIT); 1029 if (sa == NULL) { 1030 error = ENOBUFS; 1031 break; 1032 } 1033 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1034 if (ifp->if_flags & IFF_RUNNING) { 1035 error = (cmd == SIOCADDMULTI) ? 1036 se_set_multi(sc, sa->sa_data) : 1037 se_remove_multi(sc, sa->sa_data); 1038 } else 1039 error = 0; 1040 } 1041 sockaddr_free(sa); 1042 break; 1043 1044 default: 1045 1046 error = ether_ioctl(ifp, cmd, data); 1047 break; 1048 } 1049 1050 splx(s); 1051 return (error); 1052 } 1053 1054 /* 1055 * Enable the network interface. 1056 */ 1057 int 1058 se_enable(struct se_softc *sc) 1059 { 1060 struct scsipi_periph *periph = sc->sc_periph; 1061 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1062 int error = 0; 1063 1064 if (sc->sc_enabled == 0 && 1065 (error = scsipi_adapter_addref(adapt)) == 0) 1066 sc->sc_enabled = 1; 1067 else 1068 aprint_error_dev(&sc->sc_dev, "device enable failed\n"); 1069 1070 return (error); 1071 } 1072 1073 /* 1074 * Disable the network interface. 1075 */ 1076 void 1077 se_disable(struct se_softc *sc) 1078 { 1079 struct scsipi_periph *periph = sc->sc_periph; 1080 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1081 1082 if (sc->sc_enabled != 0) { 1083 scsipi_adapter_delref(adapt); 1084 sc->sc_enabled = 0; 1085 } 1086 } 1087 1088 #define SEUNIT(z) (minor(z)) 1089 /* 1090 * open the device. 1091 */ 1092 int 1093 seopen(dev_t dev, int flag, int fmt, struct lwp *l) 1094 { 1095 int unit, error; 1096 struct se_softc *sc; 1097 struct scsipi_periph *periph; 1098 struct scsipi_adapter *adapt; 1099 1100 unit = SEUNIT(dev); 1101 sc = device_lookup_private(&se_cd, unit); 1102 if (sc == NULL) 1103 return (ENXIO); 1104 1105 periph = sc->sc_periph; 1106 adapt = periph->periph_channel->chan_adapter; 1107 1108 if ((error = scsipi_adapter_addref(adapt)) != 0) 1109 return (error); 1110 1111 SC_DEBUG(periph, SCSIPI_DB1, 1112 ("scopen: dev=0x%"PRIx64" (unit %d (of %d))\n", dev, unit, 1113 se_cd.cd_ndevs)); 1114 1115 periph->periph_flags |= PERIPH_OPEN; 1116 1117 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 1118 return (0); 1119 } 1120 1121 /* 1122 * close the device.. only called if we are the LAST 1123 * occurence of an open device 1124 */ 1125 int 1126 seclose(dev_t dev, int flag, int fmt, struct lwp *l) 1127 { 1128 struct se_softc *sc = device_lookup_private(&se_cd, SEUNIT(dev)); 1129 struct scsipi_periph *periph = sc->sc_periph; 1130 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1131 1132 SC_DEBUG(sc->sc_periph, SCSIPI_DB1, ("closing\n")); 1133 1134 scsipi_wait_drain(periph); 1135 1136 scsipi_adapter_delref(adapt); 1137 periph->periph_flags &= ~PERIPH_OPEN; 1138 1139 return (0); 1140 } 1141 1142 /* 1143 * Perform special action on behalf of the user 1144 * Only does generic scsi ioctls. 1145 */ 1146 int 1147 seioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1148 { 1149 struct se_softc *sc = device_lookup_private(&se_cd, SEUNIT(dev)); 1150 1151 return (scsipi_do_ioctl(sc->sc_periph, dev, cmd, addr, flag, l)); 1152 } 1153