1 /* $NetBSD: if_se.c,v 1.82 2010/07/27 14:04:55 jakllsch 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 1.82 2010/07/27 14:04:55 jakllsch Exp $"); 63 64 #include "opt_inet.h" 65 #include "opt_atalk.h" 66 67 #include <sys/param.h> 68 #include <sys/systm.h> 69 #include <sys/callout.h> 70 #include <sys/syslog.h> 71 #include <sys/kernel.h> 72 #include <sys/file.h> 73 #include <sys/stat.h> 74 #include <sys/ioctl.h> 75 #include <sys/buf.h> 76 #include <sys/uio.h> 77 #include <sys/malloc.h> 78 #include <sys/errno.h> 79 #include <sys/device.h> 80 #include <sys/disklabel.h> 81 #include <sys/disk.h> 82 #include <sys/proc.h> 83 #include <sys/conf.h> 84 85 #include <dev/scsipi/scsipi_all.h> 86 #include <dev/scsipi/scsi_ctron_ether.h> 87 #include <dev/scsipi/scsiconf.h> 88 89 #include <sys/mbuf.h> 90 91 #include <sys/socket.h> 92 #include <net/if.h> 93 #include <net/if_dl.h> 94 #include <net/if_ether.h> 95 #include <net/if_media.h> 96 97 #ifdef INET 98 #include <netinet/in.h> 99 #include <netinet/if_inarp.h> 100 #endif 101 102 103 #ifdef NETATALK 104 #include <netatalk/at.h> 105 #endif 106 107 108 #include <net/bpf.h> 109 #include <net/bpfdesc.h> 110 111 #define SETIMEOUT 1000 112 #define SEOUTSTANDING 4 113 #define SERETRIES 4 114 #define SE_PREFIX 4 115 #define ETHER_CRC 4 116 #define SEMINSIZE 60 117 118 /* Make this big enough for an ETHERMTU packet in promiscuous mode. */ 119 #define MAX_SNAP (ETHERMTU + sizeof(struct ether_header) + \ 120 SE_PREFIX + ETHER_CRC) 121 122 /* 10 full length packets appears to be the max ever returned. 16k is OK */ 123 #define RBUF_LEN (16 * 1024) 124 125 /* Tuning parameters: 126 * The EA41x only returns a maximum of 10 packets (regardless of size). 127 * We will attempt to adapt to polling fast enough to get RDATA_GOAL packets 128 * per read 129 */ 130 #define RDATA_MAX 10 131 #define RDATA_GOAL 8 132 133 /* se_poll and se_poll0 are the normal polling rate and the minimum 134 * polling rate respectively. se_poll0 should be chosen so that at 135 * maximum ethernet speed, we will read nearly RDATA_MAX packets. se_poll 136 * should be chosen for reasonable maximum latency. 137 * In practice, if we are being saturated with min length packets, we 138 * can't poll fast enough. Polling with zero delay actually 139 * worsens performance. se_poll0 is enforced to be always at least 1 140 */ 141 #define SE_POLL 40 /* default in milliseconds */ 142 #define SE_POLL0 10 /* default in milliseconds */ 143 int se_poll = 0; /* Delay in ticks set at attach time */ 144 int se_poll0 = 0; 145 int se_max_received = 0; /* Instrumentation */ 146 147 #define PROTOCMD(p, d) \ 148 ((d) = (p)) 149 150 #define PROTOCMD_DECL(name) \ 151 static const struct scsi_ctron_ether_generic name 152 153 #define PROTOCMD_DECL_SPECIAL(name) \ 154 static const struct __CONCAT(scsi_,name) name 155 156 /* Command initializers for commands using scsi_ctron_ether_generic */ 157 PROTOCMD_DECL(ctron_ether_send) = {CTRON_ETHER_SEND, 0, {0,0}, 0}; 158 PROTOCMD_DECL(ctron_ether_add_proto) = {CTRON_ETHER_ADD_PROTO, 0, {0,0}, 0}; 159 PROTOCMD_DECL(ctron_ether_get_addr) = {CTRON_ETHER_GET_ADDR, 0, {0,0}, 0}; 160 PROTOCMD_DECL(ctron_ether_set_media) = {CTRON_ETHER_SET_MEDIA, 0, {0,0}, 0}; 161 PROTOCMD_DECL(ctron_ether_set_addr) = {CTRON_ETHER_SET_ADDR, 0, {0,0}, 0}; 162 PROTOCMD_DECL(ctron_ether_set_multi) = {CTRON_ETHER_SET_MULTI, 0, {0,0}, 0}; 163 PROTOCMD_DECL(ctron_ether_remove_multi) = 164 {CTRON_ETHER_REMOVE_MULTI, 0, {0,0}, 0}; 165 166 /* Command initializers for commands using their own structures */ 167 PROTOCMD_DECL_SPECIAL(ctron_ether_recv) = {CTRON_ETHER_RECV}; 168 PROTOCMD_DECL_SPECIAL(ctron_ether_set_mode) = 169 {CTRON_ETHER_SET_MODE, 0, {0,0}, 0}; 170 171 struct se_softc { 172 struct device sc_dev; 173 struct ethercom sc_ethercom; /* Ethernet common part */ 174 struct scsipi_periph *sc_periph;/* contains our targ, lun, etc. */ 175 176 struct callout sc_ifstart_ch; 177 struct callout sc_recv_ch; 178 179 char *sc_tbuf; 180 char *sc_rbuf; 181 int protos; 182 #define PROTO_IP 0x01 183 #define PROTO_ARP 0x02 184 #define PROTO_REVARP 0x04 185 #define PROTO_AT 0x08 186 #define PROTO_AARP 0x10 187 int sc_debug; 188 int sc_flags; 189 #define SE_NEED_RECV 0x1 190 int sc_last_timeout; 191 int sc_enabled; 192 }; 193 194 static int sematch(device_t, cfdata_t, void *); 195 static void seattach(device_t, device_t, void *); 196 197 static void se_ifstart(struct ifnet *); 198 static void sestart(struct scsipi_periph *); 199 200 static void sedone(struct scsipi_xfer *, int); 201 static int se_ioctl(struct ifnet *, u_long, void *); 202 static void sewatchdog(struct ifnet *); 203 204 static inline u_int16_t ether_cmp(void *, void *); 205 static void se_recv(void *); 206 static struct mbuf *se_get(struct se_softc *, char *, int); 207 static int se_read(struct se_softc *, char *, int); 208 static int se_reset(struct se_softc *); 209 static int se_add_proto(struct se_softc *, int); 210 static int se_get_addr(struct se_softc *, u_int8_t *); 211 static int se_set_media(struct se_softc *, int); 212 static int se_init(struct se_softc *); 213 static int se_set_multi(struct se_softc *, u_int8_t *); 214 static int se_remove_multi(struct se_softc *, u_int8_t *); 215 #if 0 216 static int sc_set_all_multi(struct se_softc *, int); 217 #endif 218 static void se_stop(struct se_softc *); 219 static inline int se_scsipi_cmd(struct scsipi_periph *periph, 220 struct scsipi_generic *scsipi_cmd, 221 int cmdlen, u_char *data_addr, int datalen, 222 int retries, int timeout, struct buf *bp, 223 int flags); 224 static void se_delayed_ifstart(void *); 225 static int se_set_mode(struct se_softc *, int, int); 226 227 int se_enable(struct se_softc *); 228 void se_disable(struct se_softc *); 229 230 CFATTACH_DECL(se, sizeof(struct se_softc), 231 sematch, seattach, NULL, NULL); 232 233 extern struct cfdriver se_cd; 234 235 dev_type_open(seopen); 236 dev_type_close(seclose); 237 dev_type_ioctl(seioctl); 238 239 const struct cdevsw se_cdevsw = { 240 seopen, seclose, noread, nowrite, seioctl, 241 nostop, notty, nopoll, nommap, nokqfilter, D_OTHER 242 }; 243 244 const struct scsipi_periphsw se_switch = { 245 NULL, /* Use default error handler */ 246 sestart, /* have a queue, served by this */ 247 NULL, /* have no async handler */ 248 sedone, /* deal with stats at interrupt time */ 249 }; 250 251 const struct scsipi_inquiry_pattern se_patterns[] = { 252 {T_PROCESSOR, T_FIXED, 253 "CABLETRN", "EA412", ""}, 254 {T_PROCESSOR, T_FIXED, 255 "Cabletrn", "EA412", ""}, 256 }; 257 258 /* 259 * Compare two Ether/802 addresses for equality, inlined and 260 * unrolled for speed. 261 * Note: use this like memcmp() 262 */ 263 static inline u_int16_t 264 ether_cmp(void *one, void *two) 265 { 266 u_int16_t *a = (u_int16_t *) one; 267 u_int16_t *b = (u_int16_t *) two; 268 u_int16_t diff; 269 270 diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]); 271 272 return (diff); 273 } 274 275 #define ETHER_CMP ether_cmp 276 277 static int 278 sematch(device_t parent, cfdata_t match, void *aux) 279 { 280 struct scsipibus_attach_args *sa = aux; 281 int priority; 282 283 (void)scsipi_inqmatch(&sa->sa_inqbuf, 284 se_patterns, sizeof(se_patterns) / sizeof(se_patterns[0]), 285 sizeof(se_patterns[0]), &priority); 286 return (priority); 287 } 288 289 /* 290 * The routine called by the low level scsi routine when it discovers 291 * a device suitable for this driver. 292 */ 293 static void 294 seattach(device_t parent, device_t self, void *aux) 295 { 296 struct se_softc *sc = device_private(self); 297 struct scsipibus_attach_args *sa = aux; 298 struct scsipi_periph *periph = sa->sa_periph; 299 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 300 u_int8_t myaddr[ETHER_ADDR_LEN]; 301 302 printf("\n"); 303 SC_DEBUG(periph, SCSIPI_DB2, ("seattach: ")); 304 305 callout_init(&sc->sc_ifstart_ch, 0); 306 callout_init(&sc->sc_recv_ch, 0); 307 308 309 /* 310 * Store information needed to contact our base driver 311 */ 312 sc->sc_periph = periph; 313 periph->periph_dev = &sc->sc_dev; 314 periph->periph_switch = &se_switch; 315 316 /* XXX increase openings? */ 317 318 se_poll = (SE_POLL * hz) / 1000; 319 se_poll = se_poll? se_poll: 1; 320 se_poll0 = (SE_POLL0 * hz) / 1000; 321 se_poll0 = se_poll0? se_poll0: 1; 322 323 /* 324 * Initialize and attach a buffer 325 */ 326 sc->sc_tbuf = malloc(ETHERMTU + sizeof(struct ether_header), 327 M_DEVBUF, M_NOWAIT); 328 if (sc->sc_tbuf == 0) 329 panic("seattach: can't allocate transmit buffer"); 330 331 sc->sc_rbuf = malloc(RBUF_LEN, M_DEVBUF, M_NOWAIT);/* A Guess */ 332 if (sc->sc_rbuf == 0) 333 panic("seattach: can't allocate receive buffer"); 334 335 se_get_addr(sc, myaddr); 336 337 /* Initialize ifnet structure. */ 338 strlcpy(ifp->if_xname, device_xname(&sc->sc_dev), sizeof(ifp->if_xname)); 339 ifp->if_softc = sc; 340 ifp->if_start = se_ifstart; 341 ifp->if_ioctl = se_ioctl; 342 ifp->if_watchdog = sewatchdog; 343 ifp->if_flags = 344 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 345 IFQ_SET_READY(&ifp->if_snd); 346 347 /* Attach the interface. */ 348 if_attach(ifp); 349 ether_ifattach(ifp, myaddr); 350 } 351 352 353 static inline int 354 se_scsipi_cmd(periph, cmd, cmdlen, data_addr, datalen, 355 retries, timeout, bp, flags) 356 struct scsipi_periph *periph; 357 struct scsipi_generic *cmd; 358 int cmdlen; 359 u_char *data_addr; 360 int datalen; 361 int retries; 362 int timeout; 363 struct buf *bp; 364 int flags; 365 { 366 int error; 367 int s = splbio(); 368 369 error = scsipi_command(periph, cmd, cmdlen, data_addr, 370 datalen, retries, timeout, bp, flags); 371 splx(s); 372 return (error); 373 } 374 375 /* Start routine for calling from scsi sub system */ 376 static void 377 sestart(struct scsipi_periph *periph) 378 { 379 struct se_softc *sc = (void *)periph->periph_dev; 380 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 381 int s = splnet(); 382 383 se_ifstart(ifp); 384 (void) splx(s); 385 } 386 387 static void 388 se_delayed_ifstart(void *v) 389 { 390 struct ifnet *ifp = v; 391 struct se_softc *sc = ifp->if_softc; 392 int s; 393 394 s = splnet(); 395 if (sc->sc_enabled) { 396 ifp->if_flags &= ~IFF_OACTIVE; 397 se_ifstart(ifp); 398 } 399 splx(s); 400 } 401 402 /* 403 * Start transmission on the interface. 404 * Always called at splnet(). 405 */ 406 static void 407 se_ifstart(struct ifnet *ifp) 408 { 409 struct se_softc *sc = ifp->if_softc; 410 struct scsi_ctron_ether_generic send_cmd; 411 struct mbuf *m, *m0; 412 int len, error; 413 u_char *cp; 414 415 /* Don't transmit if interface is busy or not running */ 416 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 417 return; 418 419 IFQ_DEQUEUE(&ifp->if_snd, m0); 420 if (m0 == 0) 421 return; 422 /* If BPF is listening on this interface, let it see the 423 * packet before we commit it to the wire. 424 */ 425 bpf_mtap(ifp, m0); 426 427 /* We need to use m->m_pkthdr.len, so require the header */ 428 if ((m0->m_flags & M_PKTHDR) == 0) 429 panic("ctscstart: no header mbuf"); 430 len = m0->m_pkthdr.len; 431 432 /* Mark the interface busy. */ 433 ifp->if_flags |= IFF_OACTIVE; 434 435 /* Chain; copy into linear buffer we allocated at attach time. */ 436 cp = sc->sc_tbuf; 437 for (m = m0; m != NULL; ) { 438 memcpy(cp, mtod(m, u_char *), m->m_len); 439 cp += m->m_len; 440 MFREE(m, m0); 441 m = m0; 442 } 443 if (len < SEMINSIZE) { 444 #ifdef SEDEBUG 445 if (sc->sc_debug) 446 printf("se: packet size %d (%zu) < %d\n", len, 447 cp - (u_char *)sc->sc_tbuf, SEMINSIZE); 448 #endif 449 memset(cp, 0, SEMINSIZE - len); 450 len = SEMINSIZE; 451 } 452 453 /* Fill out SCSI command. */ 454 PROTOCMD(ctron_ether_send, send_cmd); 455 _lto2b(len, send_cmd.length); 456 457 /* Send command to device. */ 458 error = se_scsipi_cmd(sc->sc_periph, 459 (void *)&send_cmd, sizeof(send_cmd), 460 sc->sc_tbuf, len, SERETRIES, 461 SETIMEOUT, NULL, XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_OUT); 462 if (error) { 463 aprint_error_dev(&sc->sc_dev, "not queued, error %d\n", error); 464 ifp->if_oerrors++; 465 ifp->if_flags &= ~IFF_OACTIVE; 466 } else 467 ifp->if_opackets++; 468 if (sc->sc_flags & SE_NEED_RECV) { 469 sc->sc_flags &= ~SE_NEED_RECV; 470 se_recv((void *) sc); 471 } 472 } 473 474 475 /* 476 * Called from the scsibus layer via our scsi device switch. 477 */ 478 static void 479 sedone(struct scsipi_xfer *xs, int error) 480 { 481 struct se_softc *sc = (void *)xs->xs_periph->periph_dev; 482 struct scsipi_generic *cmd = xs->cmd; 483 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 484 int s; 485 486 s = splnet(); 487 if(IS_SEND(cmd)) { 488 if (xs->error == XS_BUSY) { 489 printf("se: busy, retry txmit\n"); 490 callout_reset(&sc->sc_ifstart_ch, hz, 491 se_delayed_ifstart, ifp); 492 } else { 493 ifp->if_flags &= ~IFF_OACTIVE; 494 /* the generic scsipi_done will call 495 * sestart (through scsipi_free_xs). 496 */ 497 } 498 } else if(IS_RECV(cmd)) { 499 /* RECV complete */ 500 /* pass data up. reschedule a recv */ 501 /* scsipi_free_xs will call start. Harmless. */ 502 if (error) { 503 /* Reschedule after a delay */ 504 callout_reset(&sc->sc_recv_ch, se_poll, 505 se_recv, (void *)sc); 506 } else { 507 int n, ntimeo; 508 n = se_read(sc, xs->data, xs->datalen - xs->resid); 509 if (n > se_max_received) 510 se_max_received = n; 511 if (n == 0) 512 ntimeo = se_poll; 513 else if (n >= RDATA_MAX) 514 ntimeo = se_poll0; 515 else { 516 ntimeo = sc->sc_last_timeout; 517 ntimeo = (ntimeo * RDATA_GOAL)/n; 518 ntimeo = (ntimeo < se_poll0? 519 se_poll0: ntimeo); 520 ntimeo = (ntimeo > se_poll? 521 se_poll: ntimeo); 522 } 523 sc->sc_last_timeout = ntimeo; 524 if (ntimeo == se_poll0 && 525 IFQ_IS_EMPTY(&ifp->if_snd) == 0) 526 /* Output is pending. Do next recv 527 * after the next send. */ 528 sc->sc_flags |= SE_NEED_RECV; 529 else { 530 callout_reset(&sc->sc_recv_ch, ntimeo, 531 se_recv, (void *)sc); 532 } 533 } 534 } 535 splx(s); 536 } 537 538 static void 539 se_recv(void *v) 540 { 541 /* do a recv command */ 542 struct se_softc *sc = (struct se_softc *) v; 543 struct scsi_ctron_ether_recv recv_cmd; 544 int error; 545 546 if (sc->sc_enabled == 0) 547 return; 548 549 PROTOCMD(ctron_ether_recv, recv_cmd); 550 551 error = se_scsipi_cmd(sc->sc_periph, 552 (void *)&recv_cmd, sizeof(recv_cmd), 553 sc->sc_rbuf, RBUF_LEN, SERETRIES, SETIMEOUT, NULL, 554 XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_IN); 555 if (error) 556 callout_reset(&sc->sc_recv_ch, se_poll, se_recv, (void *)sc); 557 } 558 559 /* 560 * We copy the data into mbufs. When full cluster sized units are present 561 * we copy into clusters. 562 */ 563 static struct mbuf * 564 se_get(struct se_softc *sc, char *data, int totlen) 565 { 566 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 567 struct mbuf *m, *m0, *newm; 568 int len; 569 570 MGETHDR(m0, M_DONTWAIT, MT_DATA); 571 if (m0 == 0) 572 return (0); 573 m0->m_pkthdr.rcvif = ifp; 574 m0->m_pkthdr.len = totlen; 575 len = MHLEN; 576 m = m0; 577 578 while (totlen > 0) { 579 if (totlen >= MINCLSIZE) { 580 MCLGET(m, M_DONTWAIT); 581 if ((m->m_flags & M_EXT) == 0) 582 goto bad; 583 len = MCLBYTES; 584 } 585 586 if (m == m0) { 587 char *newdata = (char *) 588 ALIGN(m->m_data + sizeof(struct ether_header)) - 589 sizeof(struct ether_header); 590 len -= newdata - m->m_data; 591 m->m_data = newdata; 592 } 593 594 m->m_len = len = min(totlen, len); 595 memcpy(mtod(m, void *), data, len); 596 data += len; 597 598 totlen -= len; 599 if (totlen > 0) { 600 MGET(newm, M_DONTWAIT, MT_DATA); 601 if (newm == 0) 602 goto bad; 603 len = MLEN; 604 m = m->m_next = newm; 605 } 606 } 607 608 return (m0); 609 610 bad: 611 m_freem(m0); 612 return (0); 613 } 614 615 /* 616 * Pass packets to higher levels. 617 */ 618 static int 619 se_read(struct se_softc *sc, char *data, int datalen) 620 { 621 struct mbuf *m; 622 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 623 int n; 624 625 n = 0; 626 while (datalen >= 2) { 627 int len = _2btol(data); 628 data += 2; 629 datalen -= 2; 630 631 if (len == 0) 632 break; 633 #ifdef SEDEBUG 634 if (sc->sc_debug) { 635 printf("se_read: datalen = %d, packetlen = %d, proto = 0x%04x\n", datalen, len, 636 ntohs(((struct ether_header *)data)->ether_type)); 637 } 638 #endif 639 if (len <= sizeof(struct ether_header) || 640 len > MAX_SNAP) { 641 #ifdef SEDEBUG 642 printf("%s: invalid packet size %d; dropping\n", 643 device_xname(&sc->sc_dev), len); 644 #endif 645 ifp->if_ierrors++; 646 goto next_packet; 647 } 648 649 /* Don't need crc. Must keep ether header for BPF */ 650 m = se_get(sc, data, len - ETHER_CRC); 651 if (m == 0) { 652 #ifdef SEDEBUG 653 if (sc->sc_debug) 654 printf("se_read: se_get returned null\n"); 655 #endif 656 ifp->if_ierrors++; 657 goto next_packet; 658 } 659 if ((ifp->if_flags & IFF_PROMISC) != 0) { 660 m_adj(m, SE_PREFIX); 661 } 662 ifp->if_ipackets++; 663 664 /* 665 * Check if there's a BPF listener on this interface. 666 * If so, hand off the raw packet to BPF. 667 */ 668 bpf_mtap(ifp, m); 669 670 /* Pass the packet up. */ 671 (*ifp->if_input)(ifp, m); 672 673 next_packet: 674 data += len; 675 datalen -= len; 676 n++; 677 } 678 return (n); 679 } 680 681 682 static void 683 sewatchdog(struct ifnet *ifp) 684 { 685 struct se_softc *sc = ifp->if_softc; 686 687 log(LOG_ERR, "%s: device timeout\n", device_xname(&sc->sc_dev)); 688 ++ifp->if_oerrors; 689 690 se_reset(sc); 691 } 692 693 static int 694 se_reset(struct se_softc *sc) 695 { 696 int error; 697 int s = splnet(); 698 #if 0 699 /* Maybe we don't *really* want to reset the entire bus 700 * because the ctron isn't working. We would like to send a 701 * "BUS DEVICE RESET" message, but don't think the ctron 702 * understands it. 703 */ 704 error = se_scsipi_cmd(sc->sc_periph, 0, 0, 0, 0, SERETRIES, 2000, NULL, 705 XS_CTL_RESET); 706 #endif 707 error = se_init(sc); 708 splx(s); 709 return (error); 710 } 711 712 static int 713 se_add_proto(struct se_softc *sc, int proto) 714 { 715 int error; 716 struct scsi_ctron_ether_generic add_proto_cmd; 717 u_int8_t data[2]; 718 _lto2b(proto, data); 719 #ifdef SEDEBUG 720 if (sc->sc_debug) 721 printf("se: adding proto 0x%02x%02x\n", data[0], data[1]); 722 #endif 723 724 PROTOCMD(ctron_ether_add_proto, add_proto_cmd); 725 _lto2b(sizeof(data), add_proto_cmd.length); 726 error = se_scsipi_cmd(sc->sc_periph, 727 (void *)&add_proto_cmd, sizeof(add_proto_cmd), 728 data, sizeof(data), SERETRIES, SETIMEOUT, NULL, 729 XS_CTL_DATA_OUT); 730 return (error); 731 } 732 733 static int 734 se_get_addr(struct se_softc *sc, u_int8_t *myaddr) 735 { 736 int error; 737 struct scsi_ctron_ether_generic get_addr_cmd; 738 739 PROTOCMD(ctron_ether_get_addr, get_addr_cmd); 740 _lto2b(ETHER_ADDR_LEN, get_addr_cmd.length); 741 error = se_scsipi_cmd(sc->sc_periph, 742 (void *)&get_addr_cmd, sizeof(get_addr_cmd), 743 myaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 744 XS_CTL_DATA_IN); 745 printf("%s: ethernet address %s\n", device_xname(&sc->sc_dev), 746 ether_sprintf(myaddr)); 747 return (error); 748 } 749 750 751 static int 752 se_set_media(struct se_softc *sc, int type) 753 { 754 int error; 755 struct scsi_ctron_ether_generic set_media_cmd; 756 757 PROTOCMD(ctron_ether_set_media, set_media_cmd); 758 set_media_cmd.byte3 = type; 759 error = se_scsipi_cmd(sc->sc_periph, 760 (void *)&set_media_cmd, sizeof(set_media_cmd), 761 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 762 return (error); 763 } 764 765 static int 766 se_set_mode(struct se_softc *sc, int len, int mode) 767 { 768 int error; 769 struct scsi_ctron_ether_set_mode set_mode_cmd; 770 771 PROTOCMD(ctron_ether_set_mode, set_mode_cmd); 772 set_mode_cmd.mode = mode; 773 _lto2b(len, set_mode_cmd.length); 774 error = se_scsipi_cmd(sc->sc_periph, 775 (void *)&set_mode_cmd, sizeof(set_mode_cmd), 776 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 777 return (error); 778 } 779 780 781 static int 782 se_init(struct se_softc *sc) 783 { 784 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 785 struct scsi_ctron_ether_generic set_addr_cmd; 786 uint8_t enaddr[ETHER_ADDR_LEN]; 787 int error; 788 789 if (ifp->if_flags & IFF_PROMISC) { 790 error = se_set_mode(sc, MAX_SNAP, 1); 791 } 792 else 793 error = se_set_mode(sc, ETHERMTU + sizeof(struct ether_header), 794 0); 795 if (error != 0) 796 return (error); 797 798 PROTOCMD(ctron_ether_set_addr, set_addr_cmd); 799 _lto2b(ETHER_ADDR_LEN, set_addr_cmd.length); 800 memcpy(enaddr, CLLADDR(ifp->if_sadl), sizeof(enaddr)); 801 error = se_scsipi_cmd(sc->sc_periph, 802 (void *)&set_addr_cmd, sizeof(set_addr_cmd), 803 enaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 804 XS_CTL_DATA_OUT); 805 if (error != 0) 806 return (error); 807 808 if ((sc->protos & PROTO_IP) && 809 (error = se_add_proto(sc, ETHERTYPE_IP)) != 0) 810 return (error); 811 if ((sc->protos & PROTO_ARP) && 812 (error = se_add_proto(sc, ETHERTYPE_ARP)) != 0) 813 return (error); 814 if ((sc->protos & PROTO_REVARP) && 815 (error = se_add_proto(sc, ETHERTYPE_REVARP)) != 0) 816 return (error); 817 #ifdef NETATALK 818 if ((sc->protos & PROTO_AT) && 819 (error = se_add_proto(sc, ETHERTYPE_ATALK)) != 0) 820 return (error); 821 if ((sc->protos & PROTO_AARP) && 822 (error = se_add_proto(sc, ETHERTYPE_AARP)) != 0) 823 return (error); 824 #endif 825 826 if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) == IFF_UP) { 827 ifp->if_flags |= IFF_RUNNING; 828 se_recv(sc); 829 ifp->if_flags &= ~IFF_OACTIVE; 830 se_ifstart(ifp); 831 } 832 return (error); 833 } 834 835 static int 836 se_set_multi(struct se_softc *sc, u_int8_t *addr) 837 { 838 struct scsi_ctron_ether_generic set_multi_cmd; 839 int error; 840 841 if (sc->sc_debug) 842 printf("%s: set_set_multi: %s\n", device_xname(&sc->sc_dev), 843 ether_sprintf(addr)); 844 845 PROTOCMD(ctron_ether_set_multi, set_multi_cmd); 846 _lto2b(sizeof(addr), set_multi_cmd.length); 847 /* XXX sizeof(addr) is the size of the pointer. Surely it 848 * is too small? --dyoung 849 */ 850 error = se_scsipi_cmd(sc->sc_periph, 851 (void *)&set_multi_cmd, sizeof(set_multi_cmd), 852 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 853 return (error); 854 } 855 856 static int 857 se_remove_multi(struct se_softc *sc, u_int8_t *addr) 858 { 859 struct scsi_ctron_ether_generic remove_multi_cmd; 860 int error; 861 862 if (sc->sc_debug) 863 printf("%s: se_remove_multi: %s\n", device_xname(&sc->sc_dev), 864 ether_sprintf(addr)); 865 866 PROTOCMD(ctron_ether_remove_multi, remove_multi_cmd); 867 _lto2b(sizeof(addr), remove_multi_cmd.length); 868 /* XXX sizeof(addr) is the size of the pointer. Surely it 869 * is too small? --dyoung 870 */ 871 error = se_scsipi_cmd(sc->sc_periph, 872 (void *)&remove_multi_cmd, sizeof(remove_multi_cmd), 873 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 874 return (error); 875 } 876 877 #if 0 /* not used --thorpej */ 878 static int 879 sc_set_all_multi(struct se_softc *sc, int set) 880 { 881 int error = 0; 882 u_int8_t *addr; 883 struct ethercom *ac = &sc->sc_ethercom; 884 struct ether_multi *enm; 885 struct ether_multistep step; 886 887 ETHER_FIRST_MULTI(step, ac, enm); 888 while (enm != NULL) { 889 if (ETHER_CMP(enm->enm_addrlo, enm->enm_addrhi)) { 890 /* 891 * We must listen to a range of multicast addresses. 892 * For now, just accept all multicasts, rather than 893 * trying to set only those filter bits needed to match 894 * the range. (At this time, the only use of address 895 * ranges is for IP multicast routing, for which the 896 * range is big enough to require all bits set.) 897 */ 898 /* We have no way of adding a range to this device. 899 * stepping through all addresses in the range is 900 * typically not possible. The only real alternative 901 * is to go into promicuous mode and filter by hand. 902 */ 903 return (ENODEV); 904 905 } 906 907 addr = enm->enm_addrlo; 908 if ((error = set ? se_set_multi(sc, addr) : 909 se_remove_multi(sc, addr)) != 0) 910 return (error); 911 ETHER_NEXT_MULTI(step, enm); 912 } 913 return (error); 914 } 915 #endif /* not used */ 916 917 static void 918 se_stop(struct se_softc *sc) 919 { 920 921 /* Don't schedule any reads */ 922 callout_stop(&sc->sc_recv_ch); 923 924 /* How can we abort any scsi cmds in progress? */ 925 } 926 927 928 /* 929 * Process an ioctl request. 930 */ 931 static int 932 se_ioctl(struct ifnet *ifp, u_long cmd, void *data) 933 { 934 struct se_softc *sc = ifp->if_softc; 935 struct ifaddr *ifa = (struct ifaddr *)data; 936 struct ifreq *ifr = (struct ifreq *)data; 937 struct sockaddr *sa; 938 int s, error = 0; 939 940 s = splnet(); 941 942 switch (cmd) { 943 944 case SIOCINITIFADDR: 945 if ((error = se_enable(sc)) != 0) 946 break; 947 ifp->if_flags |= IFF_UP; 948 949 if ((error = se_set_media(sc, CMEDIA_AUTOSENSE) != 0)) 950 break; 951 952 switch (ifa->ifa_addr->sa_family) { 953 #ifdef INET 954 case AF_INET: 955 sc->protos |= (PROTO_IP | PROTO_ARP | PROTO_REVARP); 956 if ((error = se_init(sc)) != 0) 957 break; 958 arp_ifinit(ifp, ifa); 959 break; 960 #endif 961 #ifdef NETATALK 962 case AF_APPLETALK: 963 sc->protos |= (PROTO_AT | PROTO_AARP); 964 if ((error = se_init(sc)) != 0) 965 break; 966 break; 967 #endif 968 default: 969 error = se_init(sc); 970 break; 971 } 972 break; 973 974 975 case SIOCSIFFLAGS: 976 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 977 break; 978 /* XXX re-use ether_ioctl() */ 979 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 980 case IFF_RUNNING: 981 /* 982 * If interface is marked down and it is running, then 983 * stop it. 984 */ 985 se_stop(sc); 986 ifp->if_flags &= ~IFF_RUNNING; 987 se_disable(sc); 988 break; 989 case IFF_UP: 990 /* 991 * If interface is marked up and it is stopped, then 992 * start it. 993 */ 994 if ((error = se_enable(sc)) != 0) 995 break; 996 error = se_init(sc); 997 break; 998 default: 999 /* 1000 * Reset the interface to pick up changes in any other 1001 * flags that affect hardware registers. 1002 */ 1003 if (sc->sc_enabled) 1004 error = se_init(sc); 1005 break; 1006 } 1007 #ifdef SEDEBUG 1008 if (ifp->if_flags & IFF_DEBUG) 1009 sc->sc_debug = 1; 1010 else 1011 sc->sc_debug = 0; 1012 #endif 1013 break; 1014 1015 case SIOCADDMULTI: 1016 case SIOCDELMULTI: 1017 sa = sockaddr_dup(ifreq_getaddr(cmd, ifr), M_NOWAIT); 1018 if (sa == NULL) { 1019 error = ENOBUFS; 1020 break; 1021 } 1022 if ((error = ether_ioctl(ifp, cmd, data)) == ENETRESET) { 1023 if (ifp->if_flags & IFF_RUNNING) { 1024 error = (cmd == SIOCADDMULTI) ? 1025 se_set_multi(sc, sa->sa_data) : 1026 se_remove_multi(sc, sa->sa_data); 1027 } else 1028 error = 0; 1029 } 1030 sockaddr_free(sa); 1031 break; 1032 1033 default: 1034 1035 error = ether_ioctl(ifp, cmd, data); 1036 break; 1037 } 1038 1039 splx(s); 1040 return (error); 1041 } 1042 1043 /* 1044 * Enable the network interface. 1045 */ 1046 int 1047 se_enable(struct se_softc *sc) 1048 { 1049 struct scsipi_periph *periph = sc->sc_periph; 1050 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1051 int error = 0; 1052 1053 if (sc->sc_enabled == 0 && 1054 (error = scsipi_adapter_addref(adapt)) == 0) 1055 sc->sc_enabled = 1; 1056 else 1057 aprint_error_dev(&sc->sc_dev, "device enable failed\n"); 1058 1059 return (error); 1060 } 1061 1062 /* 1063 * Disable the network interface. 1064 */ 1065 void 1066 se_disable(struct se_softc *sc) 1067 { 1068 struct scsipi_periph *periph = sc->sc_periph; 1069 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1070 1071 if (sc->sc_enabled != 0) { 1072 scsipi_adapter_delref(adapt); 1073 sc->sc_enabled = 0; 1074 } 1075 } 1076 1077 #define SEUNIT(z) (minor(z)) 1078 /* 1079 * open the device. 1080 */ 1081 int 1082 seopen(dev_t dev, int flag, int fmt, struct lwp *l) 1083 { 1084 int unit, error; 1085 struct se_softc *sc; 1086 struct scsipi_periph *periph; 1087 struct scsipi_adapter *adapt; 1088 1089 unit = SEUNIT(dev); 1090 sc = device_lookup_private(&se_cd, unit); 1091 if (sc == NULL) 1092 return (ENXIO); 1093 1094 periph = sc->sc_periph; 1095 adapt = periph->periph_channel->chan_adapter; 1096 1097 if ((error = scsipi_adapter_addref(adapt)) != 0) 1098 return (error); 1099 1100 SC_DEBUG(periph, SCSIPI_DB1, 1101 ("scopen: dev=0x%"PRIx64" (unit %d (of %d))\n", dev, unit, 1102 se_cd.cd_ndevs)); 1103 1104 periph->periph_flags |= PERIPH_OPEN; 1105 1106 SC_DEBUG(periph, SCSIPI_DB3, ("open complete\n")); 1107 return (0); 1108 } 1109 1110 /* 1111 * close the device.. only called if we are the LAST 1112 * occurence of an open device 1113 */ 1114 int 1115 seclose(dev_t dev, int flag, int fmt, struct lwp *l) 1116 { 1117 struct se_softc *sc = device_lookup_private(&se_cd, SEUNIT(dev)); 1118 struct scsipi_periph *periph = sc->sc_periph; 1119 struct scsipi_adapter *adapt = periph->periph_channel->chan_adapter; 1120 1121 SC_DEBUG(sc->sc_periph, SCSIPI_DB1, ("closing\n")); 1122 1123 scsipi_wait_drain(periph); 1124 1125 scsipi_adapter_delref(adapt); 1126 periph->periph_flags &= ~PERIPH_OPEN; 1127 1128 return (0); 1129 } 1130 1131 /* 1132 * Perform special action on behalf of the user 1133 * Only does generic scsi ioctls. 1134 */ 1135 int 1136 seioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1137 { 1138 struct se_softc *sc = device_lookup_private(&se_cd, SEUNIT(dev)); 1139 1140 return (scsipi_do_ioctl(sc->sc_periph, dev, cmd, addr, flag, l)); 1141 } 1142