1 /* $NetBSD: if_se.c,v 1.33 2000/12/14 07:27:21 thorpej 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 "opt_inet.h" 62 #include "opt_atalk.h" 63 #include "opt_ccitt.h" 64 #include "opt_llc.h" 65 #include "opt_ns.h" 66 #include "bpfilter.h" 67 68 #include <sys/types.h> 69 #include <sys/param.h> 70 #include <sys/systm.h> 71 #include <sys/callout.h> 72 #include <sys/syslog.h> 73 #include <sys/kernel.h> 74 #include <sys/file.h> 75 #include <sys/stat.h> 76 #include <sys/ioctl.h> 77 #include <sys/buf.h> 78 #include <sys/uio.h> 79 #include <sys/malloc.h> 80 #include <sys/errno.h> 81 #include <sys/device.h> 82 #include <sys/disklabel.h> 83 #include <sys/disk.h> 84 #include <sys/proc.h> 85 #include <sys/conf.h> 86 87 #include <dev/scsipi/scsipi_all.h> 88 #include <dev/scsipi/scsi_ctron_ether.h> 89 #include <dev/scsipi/scsiconf.h> 90 91 #include <sys/mbuf.h> 92 93 #include <sys/socket.h> 94 #include <net/if.h> 95 #include <net/if_dl.h> 96 #include <net/if_ether.h> 97 #include <net/if_media.h> 98 99 #ifdef INET 100 #include <netinet/in.h> 101 #include <netinet/if_inarp.h> 102 #endif 103 104 #ifdef NS 105 #include <netns/ns.h> 106 #include <netns/ns_if.h> 107 #endif 108 109 #ifdef NETATALK 110 #include <netatalk/at.h> 111 #endif 112 113 #if defined(CCITT) && defined(LLC) 114 #include <sys/socketvar.h> 115 #include <netccitt/x25.h> 116 #include <netccitt/pk.h> 117 #include <netccitt/pk_var.h> 118 #include <netccitt/pk_extern.h> 119 #endif 120 121 #if NBPFILTER > 0 122 #include <net/bpf.h> 123 #include <net/bpfdesc.h> 124 #endif 125 126 #define SETIMEOUT 1000 127 #define SEOUTSTANDING 4 128 #define SERETRIES 4 129 #define SE_PREFIX 4 130 #define ETHER_CRC 4 131 #define SEMINSIZE 60 132 133 /* Make this big enough for an ETHERMTU packet in promiscuous mode. */ 134 #define MAX_SNAP (ETHERMTU + sizeof(struct ether_header) + \ 135 SE_PREFIX + ETHER_CRC) 136 137 /* 10 full length packets appears to be the max ever returned. 16k is OK */ 138 #define RBUF_LEN (16 * 1024) 139 140 /* Tuning parameters: 141 * The EA41x only returns a maximum of 10 packets (regardless of size). 142 * We will attempt to adapt to polling fast enough to get RDATA_GOAL packets 143 * per read 144 */ 145 #define RDATA_MAX 10 146 #define RDATA_GOAL 8 147 148 /* se_poll and se_poll0 are the normal polling rate and the minimum 149 * polling rate respectively. se_poll0 should be chosen so that at 150 * maximum ethernet speed, we will read nearly RDATA_MAX packets. se_poll 151 * should be chosen for reasonable maximum latency. 152 * In practice, if we are being saturated with min length packets, we 153 * can't poll fast enough. Polling with zero delay actually 154 * worsens performance. se_poll0 is enforced to be always at least 1 155 */ 156 #define SE_POLL 40 /* default in milliseconds */ 157 #define SE_POLL0 10 /* default in milliseconds */ 158 int se_poll = 0; /* Delay in ticks set at attach time */ 159 int se_poll0 = 0; 160 int se_max_received = 0; /* Instrumentation */ 161 162 #define PROTOCMD(p, d) \ 163 ((d) = (p)) 164 165 #define PROTOCMD_DECL(name, val) \ 166 static const struct scsi_ctron_ether_generic name = val 167 168 #define PROTOCMD_DECL_SPECIAL(name, val) \ 169 static const struct __CONCAT(scsi_,name) name = val 170 171 /* Command initializers for commands using scsi_ctron_ether_generic */ 172 PROTOCMD_DECL(ctron_ether_send, {CTRON_ETHER_SEND}); 173 PROTOCMD_DECL(ctron_ether_add_proto, {CTRON_ETHER_ADD_PROTO}); 174 PROTOCMD_DECL(ctron_ether_get_addr, {CTRON_ETHER_GET_ADDR}); 175 PROTOCMD_DECL(ctron_ether_set_media, {CTRON_ETHER_SET_MEDIA}); 176 PROTOCMD_DECL(ctron_ether_set_addr, {CTRON_ETHER_SET_ADDR}); 177 PROTOCMD_DECL(ctron_ether_set_multi, {CTRON_ETHER_SET_MULTI}); 178 PROTOCMD_DECL(ctron_ether_remove_multi, {CTRON_ETHER_REMOVE_MULTI}); 179 180 /* Command initializers for commands using their own structures */ 181 PROTOCMD_DECL_SPECIAL(ctron_ether_recv, {CTRON_ETHER_RECV}); 182 PROTOCMD_DECL_SPECIAL(ctron_ether_set_mode, {CTRON_ETHER_SET_MODE}); 183 184 struct se_softc { 185 struct device sc_dev; 186 struct ethercom sc_ethercom; /* Ethernet common part */ 187 struct scsipi_link *sc_link; /* contains our targ, lun, etc. */ 188 189 struct callout sc_ifstart_ch; 190 struct callout sc_recv_ch; 191 192 char *sc_tbuf; 193 char *sc_rbuf; 194 int protos; 195 #define PROTO_IP 0x01 196 #define PROTO_ARP 0x02 197 #define PROTO_REVARP 0x04 198 #define PROTO_AT 0x08 199 #define PROTO_AARP 0x10 200 int sc_debug; 201 int sc_flags; 202 #define SE_NEED_RECV 0x1 203 int sc_last_timeout; 204 int sc_enabled; 205 }; 206 207 cdev_decl(se); 208 209 static int sematch __P((struct device *, struct cfdata *, void *)); 210 static void seattach __P((struct device *, struct device *, void *)); 211 212 static void se_ifstart __P((struct ifnet *)); 213 static void sestart __P((void *)); 214 215 static void sedone __P((struct scsipi_xfer *)); 216 static int se_ioctl __P((struct ifnet *, u_long, caddr_t)); 217 static void sewatchdog __P((struct ifnet *)); 218 219 static __inline u_int16_t ether_cmp __P((void *, void *)); 220 static void se_recv __P((void *)); 221 static struct mbuf *se_get __P((struct se_softc *, char *, int)); 222 static int se_read __P((struct se_softc *, char *, int)); 223 static int se_reset __P((struct se_softc *)); 224 static int se_add_proto __P((struct se_softc *, int)); 225 static int se_get_addr __P((struct se_softc *, u_int8_t *)); 226 static int se_set_media __P((struct se_softc *, int)); 227 static int se_init __P((struct se_softc *)); 228 static int se_set_multi __P((struct se_softc *, u_int8_t *)); 229 static int se_remove_multi __P((struct se_softc *, u_int8_t *)); 230 #if 0 231 static int sc_set_all_multi __P((struct se_softc *, int)); 232 #endif 233 static void se_stop __P((struct se_softc *)); 234 static __inline int se_scsipi_cmd __P((struct scsipi_link *sc_link, 235 struct scsipi_generic *scsipi_cmd, 236 int cmdlen, u_char *data_addr, int datalen, 237 int retries, int timeout, struct buf *bp, 238 int flags)); 239 static void se_delayed_ifstart __P((void *)); 240 static int se_set_mode(struct se_softc *, int, int); 241 242 int se_enable __P((struct se_softc *)); 243 void se_disable __P((struct se_softc *)); 244 245 struct cfattach se_ca = { 246 sizeof(struct se_softc), sematch, seattach 247 }; 248 249 extern struct cfdriver se_cd; 250 251 struct scsipi_device se_switch = { 252 NULL, /* Use default error handler */ 253 sestart, /* have a queue, served by this */ 254 NULL, /* have no async handler */ 255 sedone, /* deal with stats at interrupt time */ 256 }; 257 258 struct scsipi_inquiry_pattern se_patterns[] = { 259 {T_PROCESSOR, T_FIXED, 260 "CABLETRN", "EA412", ""}, 261 {T_PROCESSOR, T_FIXED, 262 "Cabletrn", "EA412", ""}, 263 }; 264 265 /* 266 * Compare two Ether/802 addresses for equality, inlined and 267 * unrolled for speed. 268 * Note: use this like bcmp() 269 */ 270 static __inline u_int16_t 271 ether_cmp(one, two) 272 void *one, *two; 273 { 274 u_int16_t *a = (u_int16_t *) one; 275 u_int16_t *b = (u_int16_t *) two; 276 u_int16_t diff; 277 278 diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]); 279 280 return (diff); 281 } 282 283 #define ETHER_CMP ether_cmp 284 285 static int 286 sematch(parent, match, aux) 287 struct device *parent; 288 struct cfdata *match; 289 void *aux; 290 { 291 struct scsipibus_attach_args *sa = aux; 292 int priority; 293 294 (void)scsipi_inqmatch(&sa->sa_inqbuf, 295 (caddr_t)se_patterns, sizeof(se_patterns) / sizeof(se_patterns[0]), 296 sizeof(se_patterns[0]), &priority); 297 return (priority); 298 } 299 300 /* 301 * The routine called by the low level scsi routine when it discovers 302 * a device suitable for this driver. 303 */ 304 static void 305 seattach(parent, self, aux) 306 struct device *parent, *self; 307 void *aux; 308 { 309 struct se_softc *sc = (void *)self; 310 struct scsipibus_attach_args *sa = aux; 311 struct scsipi_link *sc_link = sa->sa_sc_link; 312 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 313 u_int8_t myaddr[ETHER_ADDR_LEN]; 314 315 printf("\n"); 316 SC_DEBUG(sc_link, SDEV_DB2, ("seattach: ")); 317 318 callout_init(&sc->sc_ifstart_ch); 319 callout_init(&sc->sc_recv_ch); 320 321 /* 322 * Store information needed to contact our base driver 323 */ 324 sc->sc_link = sc_link; 325 sc_link->device = &se_switch; 326 sc_link->device_softc = sc; 327 if (sc_link->openings > SEOUTSTANDING) 328 sc_link->openings = SEOUTSTANDING; 329 330 se_poll = (SE_POLL * hz) / 1000; 331 se_poll = se_poll? se_poll: 1; 332 se_poll0 = (SE_POLL0 * hz) / 1000; 333 se_poll0 = se_poll0? se_poll0: 1; 334 335 /* 336 * Initialize and attach a buffer 337 */ 338 sc->sc_tbuf = malloc(ETHERMTU + sizeof(struct ether_header), 339 M_DEVBUF, M_NOWAIT); 340 if (sc->sc_tbuf == 0) 341 panic("seattach: can't allocate transmit buffer"); 342 343 sc->sc_rbuf = malloc(RBUF_LEN, M_DEVBUF, M_NOWAIT);/* A Guess */ 344 if (sc->sc_rbuf == 0) 345 panic("seattach: can't allocate receive buffer"); 346 347 se_get_addr(sc, myaddr); 348 349 /* Initialize ifnet structure. */ 350 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 351 ifp->if_softc = sc; 352 ifp->if_start = se_ifstart; 353 ifp->if_ioctl = se_ioctl; 354 ifp->if_watchdog = sewatchdog; 355 ifp->if_flags = 356 IFF_BROADCAST | IFF_SIMPLEX | IFF_NOTRAILERS | IFF_MULTICAST; 357 IFQ_SET_READY(&ifp->if_snd); 358 359 /* Attach the interface. */ 360 if_attach(ifp); 361 ether_ifattach(ifp, myaddr); 362 } 363 364 365 static __inline int 366 se_scsipi_cmd(sc_link, scsipi_cmd, cmdlen, data_addr, datalen, 367 retries, timeout, bp, flags) 368 struct scsipi_link *sc_link; 369 struct scsipi_generic *scsipi_cmd; 370 int cmdlen; 371 u_char *data_addr; 372 int datalen; 373 int retries; 374 int timeout; 375 struct buf *bp; 376 int flags; 377 { 378 int error; 379 int s = splbio(); 380 381 error = scsipi_command(sc_link, scsipi_cmd, cmdlen, data_addr, 382 datalen, retries, timeout, bp, flags); 383 splx(s); 384 return (error); 385 } 386 387 /* Start routine for calling from scsi sub system */ 388 static void 389 sestart(v) 390 void *v; 391 { 392 struct se_softc *sc = (struct se_softc *) v; 393 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 394 int s = splnet(); 395 396 se_ifstart(ifp); 397 (void) splx(s); 398 } 399 400 static void 401 se_delayed_ifstart(v) 402 void *v; 403 { 404 struct ifnet *ifp = v; 405 struct se_softc *sc = ifp->if_softc; 406 int s; 407 408 s = splnet(); 409 if (sc->sc_enabled) { 410 ifp->if_flags &= ~IFF_OACTIVE; 411 se_ifstart(ifp); 412 } 413 splx(s); 414 } 415 416 /* 417 * Start transmission on the interface. 418 * Always called at splnet(). 419 */ 420 static void 421 se_ifstart(ifp) 422 struct ifnet *ifp; 423 { 424 struct se_softc *sc = ifp->if_softc; 425 struct scsi_ctron_ether_generic send_cmd; 426 struct mbuf *m, *m0; 427 int len, error; 428 u_char *cp; 429 430 /* Don't transmit if interface is busy or not running */ 431 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 432 return; 433 434 IFQ_DEQUEUE(&ifp->if_snd, m0); 435 if (m0 == 0) 436 return; 437 #if NBPFILTER > 0 438 /* If BPF is listening on this interface, let it see the 439 * packet before we commit it to the wire. 440 */ 441 if (ifp->if_bpf) 442 bpf_mtap(ifp->if_bpf, m0); 443 #endif 444 445 /* We need to use m->m_pkthdr.len, so require the header */ 446 if ((m0->m_flags & M_PKTHDR) == 0) 447 panic("ctscstart: no header mbuf"); 448 len = m0->m_pkthdr.len; 449 450 /* Mark the interface busy. */ 451 ifp->if_flags |= IFF_OACTIVE; 452 453 /* Chain; copy into linear buffer we allocated at attach time. */ 454 cp = sc->sc_tbuf; 455 for (m = m0; m != NULL; ) { 456 bcopy(mtod(m, u_char *), cp, m->m_len); 457 cp += m->m_len; 458 MFREE(m, m0); 459 m = m0; 460 } 461 if (len < SEMINSIZE) { 462 #ifdef SEDEBUG 463 if (sc->sc_debug) 464 printf("se: packet size %d (%d) < %d\n", len, 465 cp - (u_char *)sc->sc_tbuf, SEMINSIZE); 466 #endif 467 bzero(cp, SEMINSIZE - len); 468 len = SEMINSIZE; 469 } 470 471 /* Fill out SCSI command. */ 472 PROTOCMD(ctron_ether_send, send_cmd); 473 _lto2b(len, send_cmd.length); 474 475 /* Send command to device. */ 476 error = se_scsipi_cmd(sc->sc_link, 477 (struct scsipi_generic *)&send_cmd, sizeof(send_cmd), 478 sc->sc_tbuf, len, SERETRIES, 479 SETIMEOUT, NULL, XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_OUT); 480 if (error) { 481 printf("%s: not queued, error %d\n", 482 sc->sc_dev.dv_xname, error); 483 ifp->if_oerrors++; 484 ifp->if_flags &= ~IFF_OACTIVE; 485 } else 486 ifp->if_opackets++; 487 if (sc->sc_flags & SE_NEED_RECV) { 488 sc->sc_flags &= ~SE_NEED_RECV; 489 se_recv((void *) sc); 490 } 491 } 492 493 494 /* 495 * Called from the scsibus layer via our scsi device switch. 496 */ 497 static void 498 sedone(xs) 499 struct scsipi_xfer *xs; 500 { 501 int error; 502 struct se_softc *sc = xs->sc_link->device_softc; 503 struct scsipi_generic *cmd = xs->cmd; 504 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 505 int s; 506 507 error = !(xs->error == XS_NOERROR); 508 509 s = splnet(); 510 if(IS_SEND(cmd)) { 511 if (xs->error == XS_BUSY) { 512 printf("se: busy, retry txmit\n"); 513 callout_reset(&sc->sc_ifstart_ch, hz, 514 se_delayed_ifstart, ifp); 515 } else { 516 ifp->if_flags &= ~IFF_OACTIVE; 517 /* the generic scsipi_done will call 518 * sestart (through scsipi_free_xs). 519 */ 520 } 521 } else if(IS_RECV(cmd)) { 522 /* RECV complete */ 523 /* pass data up. reschedule a recv */ 524 /* scsipi_free_xs will call start. Harmless. */ 525 if (error) { 526 /* Reschedule after a delay */ 527 callout_reset(&sc->sc_recv_ch, se_poll, 528 se_recv, (void *)sc); 529 } else { 530 int n, ntimeo; 531 n = se_read(sc, xs->data, xs->datalen - xs->resid); 532 if (n > se_max_received) 533 se_max_received = n; 534 if (n == 0) 535 ntimeo = se_poll; 536 else if (n >= RDATA_MAX) 537 ntimeo = se_poll0; 538 else { 539 ntimeo = sc->sc_last_timeout; 540 ntimeo = (ntimeo * RDATA_GOAL)/n; 541 ntimeo = (ntimeo < se_poll0? 542 se_poll0: ntimeo); 543 ntimeo = (ntimeo > se_poll? 544 se_poll: ntimeo); 545 } 546 sc->sc_last_timeout = ntimeo; 547 if (ntimeo == se_poll0 && 548 IFQ_IS_EMPTY(&ifp->if_snd) == 0) 549 /* Output is pending. Do next recv 550 * after the next send. */ 551 sc->sc_flags |= SE_NEED_RECV; 552 else { 553 callout_reset(&sc->sc_recv_ch, ntimeo, 554 se_recv, (void *)sc); 555 } 556 } 557 } 558 splx(s); 559 } 560 561 static void 562 se_recv(v) 563 void *v; 564 { 565 /* do a recv command */ 566 struct se_softc *sc = (struct se_softc *) v; 567 struct scsi_ctron_ether_recv recv_cmd; 568 int error; 569 570 if (sc->sc_enabled == 0) 571 return; 572 573 PROTOCMD(ctron_ether_recv, recv_cmd); 574 575 error = se_scsipi_cmd(sc->sc_link, 576 (struct scsipi_generic *)&recv_cmd, sizeof(recv_cmd), 577 sc->sc_rbuf, RBUF_LEN, SERETRIES, SETIMEOUT, NULL, 578 XS_CTL_NOSLEEP|XS_CTL_ASYNC|XS_CTL_DATA_IN); 579 if (error) 580 callout_reset(&sc->sc_recv_ch, se_poll, se_recv, (void *)sc); 581 } 582 583 /* 584 * We copy the data into mbufs. When full cluster sized units are present 585 * we copy into clusters. 586 */ 587 static struct mbuf * 588 se_get(sc, data, totlen) 589 struct se_softc *sc; 590 char *data; 591 int totlen; 592 { 593 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 594 struct mbuf *m, *m0, *newm; 595 int len; 596 597 MGETHDR(m0, M_DONTWAIT, MT_DATA); 598 if (m0 == 0) 599 return (0); 600 m0->m_pkthdr.rcvif = ifp; 601 m0->m_pkthdr.len = totlen; 602 len = MHLEN; 603 m = m0; 604 605 while (totlen > 0) { 606 if (totlen >= MINCLSIZE) { 607 MCLGET(m, M_DONTWAIT); 608 if ((m->m_flags & M_EXT) == 0) 609 goto bad; 610 len = MCLBYTES; 611 } 612 613 if (m == m0) { 614 caddr_t newdata = (caddr_t) 615 ALIGN(m->m_data + sizeof(struct ether_header)) - 616 sizeof(struct ether_header); 617 len -= newdata - m->m_data; 618 m->m_data = newdata; 619 } 620 621 m->m_len = len = min(totlen, len); 622 bcopy(data, mtod(m, caddr_t), len); 623 data += len; 624 625 totlen -= len; 626 if (totlen > 0) { 627 MGET(newm, M_DONTWAIT, MT_DATA); 628 if (newm == 0) 629 goto bad; 630 len = MLEN; 631 m = m->m_next = newm; 632 } 633 } 634 635 return (m0); 636 637 bad: 638 m_freem(m0); 639 return (0); 640 } 641 642 /* 643 * Pass packets to higher levels. 644 */ 645 static int 646 se_read(sc, data, datalen) 647 struct se_softc *sc; 648 char *data; 649 int datalen; 650 { 651 struct mbuf *m; 652 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 653 int n; 654 655 n = 0; 656 while (datalen >= 2) { 657 int len = _2btol(data); 658 data += 2; 659 datalen -= 2; 660 661 if (len == 0) 662 break; 663 #ifdef SEDEBUG 664 if (sc->sc_debug) { 665 printf("se_read: datalen = %d, packetlen = %d, proto = 0x%04x\n", datalen, len, 666 ntohs(((struct ether_header *)data)->ether_type)); 667 } 668 #endif 669 if (len <= sizeof(struct ether_header) || 670 len > MAX_SNAP) { 671 #ifdef SEDEBUG 672 printf("%s: invalid packet size %d; dropping\n", 673 sc->sc_dev.dv_xname, len); 674 #endif 675 ifp->if_ierrors++; 676 goto next_packet; 677 } 678 679 /* Don't need crc. Must keep ether header for BPF */ 680 m = se_get(sc, data, len - ETHER_CRC); 681 if (m == 0) { 682 #ifdef SEDEBUG 683 if (sc->sc_debug) 684 printf("se_read: se_get returned null\n"); 685 #endif 686 ifp->if_ierrors++; 687 goto next_packet; 688 } 689 if ((ifp->if_flags & IFF_PROMISC) != 0) { 690 m_adj(m, SE_PREFIX); 691 } 692 ifp->if_ipackets++; 693 694 #if NBPFILTER > 0 695 /* 696 * Check if there's a BPF listener on this interface. 697 * If so, hand off the raw packet to BPF. 698 */ 699 if (ifp->if_bpf) 700 bpf_mtap(ifp->if_bpf, m); 701 #endif 702 703 /* Pass the packet up. */ 704 (*ifp->if_input)(ifp, m); 705 706 next_packet: 707 data += len; 708 datalen -= len; 709 n++; 710 } 711 return (n); 712 } 713 714 715 static void 716 sewatchdog(ifp) 717 struct ifnet *ifp; 718 { 719 struct se_softc *sc = ifp->if_softc; 720 721 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 722 ++ifp->if_oerrors; 723 724 se_reset(sc); 725 } 726 727 static int 728 se_reset(sc) 729 struct se_softc *sc; 730 { 731 int error; 732 int s = splnet(); 733 #if 0 734 /* Maybe we don't *really* want to reset the entire bus 735 * because the ctron isn't working. We would like to send a 736 * "BUS DEVICE RESET" message, but don't think the ctron 737 * understands it. 738 */ 739 error = se_scsipi_cmd(sc->sc_link, 0, 0, 0, 0, SERETRIES, 2000, NULL, 740 XS_CTL_RESET); 741 #endif 742 error = se_init(sc); 743 splx(s); 744 return (error); 745 } 746 747 static int 748 se_add_proto(sc, proto) 749 struct se_softc *sc; 750 int proto; 751 { 752 int error; 753 struct scsi_ctron_ether_generic add_proto_cmd; 754 u_int8_t data[2]; 755 _lto2b(proto, data); 756 #ifdef SEDEBUG 757 if (sc->sc_debug) 758 printf("se: adding proto 0x%02x%02x\n", data[0], data[1]); 759 #endif 760 761 PROTOCMD(ctron_ether_add_proto, add_proto_cmd); 762 _lto2b(sizeof(data), add_proto_cmd.length); 763 error = se_scsipi_cmd(sc->sc_link, 764 (struct scsipi_generic *) &add_proto_cmd, sizeof(add_proto_cmd), 765 data, sizeof(data), SERETRIES, SETIMEOUT, NULL, 766 XS_CTL_DATA_OUT | XS_CTL_DATA_ONSTACK); 767 return (error); 768 } 769 770 static int 771 se_get_addr(sc, myaddr) 772 struct se_softc *sc; 773 u_int8_t *myaddr; 774 { 775 int error; 776 struct scsi_ctron_ether_generic get_addr_cmd; 777 778 PROTOCMD(ctron_ether_get_addr, get_addr_cmd); 779 _lto2b(ETHER_ADDR_LEN, get_addr_cmd.length); 780 error = se_scsipi_cmd(sc->sc_link, 781 (struct scsipi_generic *) &get_addr_cmd, sizeof(get_addr_cmd), 782 myaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 783 XS_CTL_DATA_IN | XS_CTL_DATA_ONSTACK); 784 printf("%s: ethernet address %s\n", sc->sc_dev.dv_xname, 785 ether_sprintf(myaddr)); 786 return (error); 787 } 788 789 790 static int 791 se_set_media(sc, type) 792 struct se_softc *sc; 793 int type; 794 { 795 int error; 796 struct scsi_ctron_ether_generic set_media_cmd; 797 798 PROTOCMD(ctron_ether_set_media, set_media_cmd); 799 set_media_cmd.byte3 = type; 800 error = se_scsipi_cmd(sc->sc_link, 801 (struct scsipi_generic *) &set_media_cmd, sizeof(set_media_cmd), 802 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 803 return (error); 804 } 805 806 static int 807 se_set_mode(sc, len, mode) 808 struct se_softc *sc; 809 int len; 810 int mode; 811 { 812 int error; 813 struct scsi_ctron_ether_set_mode set_mode_cmd; 814 815 PROTOCMD(ctron_ether_set_mode, set_mode_cmd); 816 set_mode_cmd.mode = mode; 817 _lto2b(len, set_mode_cmd.length); 818 error = se_scsipi_cmd(sc->sc_link, 819 (struct scsipi_generic *) &set_mode_cmd, sizeof(set_mode_cmd), 820 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 821 return (error); 822 } 823 824 825 static int 826 se_init(sc) 827 struct se_softc *sc; 828 { 829 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 830 struct scsi_ctron_ether_generic set_addr_cmd; 831 int error; 832 833 #if NBPFILTER > 0 834 if (ifp->if_flags & IFF_PROMISC) { 835 error = se_set_mode(sc, MAX_SNAP, 1); 836 } 837 else 838 #endif 839 error = se_set_mode(sc, ETHERMTU + sizeof(struct ether_header), 840 0); 841 if (error != 0) 842 return (error); 843 844 PROTOCMD(ctron_ether_set_addr, set_addr_cmd); 845 _lto2b(ETHER_ADDR_LEN, set_addr_cmd.length); 846 error = se_scsipi_cmd(sc->sc_link, 847 (struct scsipi_generic *) &set_addr_cmd, sizeof(set_addr_cmd), 848 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 849 XS_CTL_DATA_OUT); 850 if (error != 0) 851 return (error); 852 853 if ((sc->protos & PROTO_IP) && 854 (error = se_add_proto(sc, ETHERTYPE_IP)) != 0) 855 return (error); 856 if ((sc->protos & PROTO_ARP) && 857 (error = se_add_proto(sc, ETHERTYPE_ARP)) != 0) 858 return (error); 859 if ((sc->protos & PROTO_REVARP) && 860 (error = se_add_proto(sc, ETHERTYPE_REVARP)) != 0) 861 return (error); 862 #ifdef NETATALK 863 if ((sc->protos & PROTO_AT) && 864 (error = se_add_proto(sc, ETHERTYPE_ATALK)) != 0) 865 return (error); 866 if ((sc->protos & PROTO_AARP) && 867 (error = se_add_proto(sc, ETHERTYPE_AARP)) != 0) 868 return (error); 869 #endif 870 871 if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) == IFF_UP) { 872 ifp->if_flags |= IFF_RUNNING; 873 se_recv(sc); 874 ifp->if_flags &= ~IFF_OACTIVE; 875 se_ifstart(ifp); 876 } 877 return (error); 878 } 879 880 static int 881 se_set_multi(sc, addr) 882 struct se_softc *sc; 883 u_int8_t *addr; 884 { 885 struct scsi_ctron_ether_generic set_multi_cmd; 886 int error; 887 888 if (sc->sc_debug) 889 printf("%s: set_set_multi: %s\n", sc->sc_dev.dv_xname, 890 ether_sprintf(addr)); 891 892 PROTOCMD(ctron_ether_set_multi, set_multi_cmd); 893 _lto2b(sizeof(addr), set_multi_cmd.length); 894 error = se_scsipi_cmd(sc->sc_link, 895 (struct scsipi_generic *) &set_multi_cmd, sizeof(set_multi_cmd), 896 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 897 return (error); 898 } 899 900 static int 901 se_remove_multi(sc, addr) 902 struct se_softc *sc; 903 u_int8_t *addr; 904 { 905 struct scsi_ctron_ether_generic remove_multi_cmd; 906 int error; 907 908 if (sc->sc_debug) 909 printf("%s: se_remove_multi: %s\n", sc->sc_dev.dv_xname, 910 ether_sprintf(addr)); 911 912 PROTOCMD(ctron_ether_remove_multi, remove_multi_cmd); 913 _lto2b(sizeof(addr), remove_multi_cmd.length); 914 error = se_scsipi_cmd(sc->sc_link, 915 (struct scsipi_generic *) &remove_multi_cmd, 916 sizeof(remove_multi_cmd), 917 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, XS_CTL_DATA_OUT); 918 return (error); 919 } 920 921 #if 0 /* not used --thorpej */ 922 static int 923 sc_set_all_multi(sc, set) 924 struct se_softc *sc; 925 int set; 926 { 927 int error = 0; 928 u_int8_t *addr; 929 struct ethercom *ac = &sc->sc_ethercom; 930 struct ether_multi *enm; 931 struct ether_multistep step; 932 933 ETHER_FIRST_MULTI(step, ac, enm); 934 while (enm != NULL) { 935 if (ETHER_CMP(enm->enm_addrlo, enm->enm_addrhi)) { 936 /* 937 * We must listen to a range of multicast addresses. 938 * For now, just accept all multicasts, rather than 939 * trying to set only those filter bits needed to match 940 * the range. (At this time, the only use of address 941 * ranges is for IP multicast routing, for which the 942 * range is big enough to require all bits set.) 943 */ 944 /* We have no way of adding a range to this device. 945 * stepping through all addresses in the range is 946 * typically not possible. The only real alternative 947 * is to go into promicuous mode and filter by hand. 948 */ 949 return (ENODEV); 950 951 } 952 953 addr = enm->enm_addrlo; 954 if ((error = set ? se_set_multi(sc, addr) : 955 se_remove_multi(sc, addr)) != 0) 956 return (error); 957 ETHER_NEXT_MULTI(step, enm); 958 } 959 return (error); 960 } 961 #endif /* not used */ 962 963 static void 964 se_stop(sc) 965 struct se_softc *sc; 966 { 967 968 /* Don't schedule any reads */ 969 callout_stop(&sc->sc_recv_ch); 970 971 /* How can we abort any scsi cmds in progress? */ 972 } 973 974 975 /* 976 * Process an ioctl request. 977 */ 978 static int 979 se_ioctl(ifp, cmd, data) 980 struct ifnet *ifp; 981 u_long cmd; 982 caddr_t data; 983 { 984 struct se_softc *sc = ifp->if_softc; 985 struct ifaddr *ifa = (struct ifaddr *)data; 986 struct ifreq *ifr = (struct ifreq *)data; 987 int s, error = 0; 988 989 s = splnet(); 990 991 switch (cmd) { 992 993 case SIOCSIFADDR: 994 if ((error = se_enable(sc)) != 0) 995 break; 996 ifp->if_flags |= IFF_UP; 997 998 if ((error = se_set_media(sc, CMEDIA_AUTOSENSE) != 0)) 999 break; 1000 1001 switch (ifa->ifa_addr->sa_family) { 1002 #ifdef INET 1003 case AF_INET: 1004 sc->protos |= (PROTO_IP | PROTO_ARP | PROTO_REVARP); 1005 if ((error = se_init(sc)) != 0) 1006 break; 1007 arp_ifinit(ifp, ifa); 1008 break; 1009 #endif 1010 #ifdef NS 1011 case AF_NS: 1012 { 1013 struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1014 1015 if (ns_nullhost(*ina)) 1016 ina->x_host = 1017 *(union ns_host *)LLADDR(ifp->if_sadl); 1018 else 1019 bcopy(ina->x_host.c_host, 1020 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 1021 /* Set new address. */ 1022 1023 error = se_init(sc); 1024 break; 1025 } 1026 #endif 1027 #ifdef NETATALK 1028 case AF_APPLETALK: 1029 sc->protos |= (PROTO_AT | PROTO_AARP); 1030 if ((error = se_init(sc)) != 0) 1031 break; 1032 break; 1033 #endif 1034 default: 1035 error = se_init(sc); 1036 break; 1037 } 1038 break; 1039 1040 #if defined(CCITT) && defined(LLC) 1041 case SIOCSIFCONF_X25: 1042 if ((error = se_enable(sc)) != 0) 1043 break; 1044 ifp->if_flags |= IFF_UP; 1045 ifa->ifa_rtrequest = cons_rtrequest; /* XXX */ 1046 error = x25_llcglue(PRC_IFUP, ifa->ifa_addr); 1047 if (error == 0) 1048 error = se_init(sc); 1049 break; 1050 #endif /* CCITT && LLC */ 1051 1052 case SIOCSIFFLAGS: 1053 if ((ifp->if_flags & IFF_UP) == 0 && 1054 (ifp->if_flags & IFF_RUNNING) != 0) { 1055 /* 1056 * If interface is marked down and it is running, then 1057 * stop it. 1058 */ 1059 se_stop(sc); 1060 ifp->if_flags &= ~IFF_RUNNING; 1061 se_disable(sc); 1062 } else if ((ifp->if_flags & IFF_UP) != 0 && 1063 (ifp->if_flags & IFF_RUNNING) == 0) { 1064 /* 1065 * If interface is marked up and it is stopped, then 1066 * start it. 1067 */ 1068 if ((error = se_enable(sc)) != 0) 1069 break; 1070 error = se_init(sc); 1071 } else if (sc->sc_enabled) { 1072 /* 1073 * Reset the interface to pick up changes in any other 1074 * flags that affect hardware registers. 1075 */ 1076 error = se_init(sc); 1077 } 1078 #ifdef SEDEBUG 1079 if (ifp->if_flags & IFF_DEBUG) 1080 sc->sc_debug = 1; 1081 else 1082 sc->sc_debug = 0; 1083 #endif 1084 break; 1085 1086 case SIOCADDMULTI: 1087 if (sc->sc_enabled == 0) { 1088 error = EIO; 1089 break; 1090 } 1091 if (ether_addmulti(ifr, &sc->sc_ethercom) == ENETRESET) 1092 error = se_set_multi(sc, ifr->ifr_addr.sa_data); 1093 else 1094 error = 0; 1095 break; 1096 case SIOCDELMULTI: 1097 if (sc->sc_enabled == 0) { 1098 error = EIO; 1099 break; 1100 } 1101 if (ether_delmulti(ifr, &sc->sc_ethercom) == ENETRESET) 1102 error = se_remove_multi(sc, ifr->ifr_addr.sa_data); 1103 else 1104 error = 0; 1105 break; 1106 1107 default: 1108 1109 error = EINVAL; 1110 break; 1111 } 1112 1113 splx(s); 1114 return (error); 1115 } 1116 1117 /* 1118 * Enable the network interface. 1119 */ 1120 int 1121 se_enable(sc) 1122 struct se_softc *sc; 1123 { 1124 int error = 0; 1125 1126 if (sc->sc_enabled == 0 && 1127 (error = scsipi_adapter_addref(sc->sc_link)) == 0) 1128 sc->sc_enabled = 1; 1129 else 1130 printf("%s: device enable failed\n", 1131 sc->sc_dev.dv_xname); 1132 1133 return (error); 1134 } 1135 1136 /* 1137 * Disable the network interface. 1138 */ 1139 void 1140 se_disable(sc) 1141 struct se_softc *sc; 1142 { 1143 1144 if (sc->sc_enabled != 0) { 1145 scsipi_adapter_delref(sc->sc_link); 1146 sc->sc_enabled = 0; 1147 } 1148 } 1149 1150 #define SEUNIT(z) (minor(z)) 1151 /* 1152 * open the device. 1153 */ 1154 int 1155 seopen(dev, flag, fmt, p) 1156 dev_t dev; 1157 int flag, fmt; 1158 struct proc *p; 1159 { 1160 int unit, error; 1161 struct se_softc *sc; 1162 struct scsipi_link *sc_link; 1163 1164 unit = SEUNIT(dev); 1165 if (unit >= se_cd.cd_ndevs) 1166 return (ENXIO); 1167 sc = se_cd.cd_devs[unit]; 1168 if (sc == NULL) 1169 return (ENXIO); 1170 1171 sc_link = sc->sc_link; 1172 1173 if ((error = scsipi_adapter_addref(sc_link)) != 0) 1174 return (error); 1175 1176 SC_DEBUG(sc_link, SDEV_DB1, 1177 ("scopen: dev=0x%x (unit %d (of %d))\n", dev, unit, 1178 se_cd.cd_ndevs)); 1179 1180 sc_link->flags |= SDEV_OPEN; 1181 1182 SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n")); 1183 return (0); 1184 } 1185 1186 /* 1187 * close the device.. only called if we are the LAST 1188 * occurence of an open device 1189 */ 1190 int 1191 seclose(dev, flag, fmt, p) 1192 dev_t dev; 1193 int flag, fmt; 1194 struct proc *p; 1195 { 1196 struct se_softc *sc = se_cd.cd_devs[SEUNIT(dev)]; 1197 1198 SC_DEBUG(sc->sc_link, SDEV_DB1, ("closing\n")); 1199 1200 scsipi_wait_drain(sc->sc_link); 1201 1202 scsipi_adapter_delref(sc->sc_link); 1203 sc->sc_link->flags &= ~SDEV_OPEN; 1204 1205 return (0); 1206 } 1207 1208 /* 1209 * Perform special action on behalf of the user 1210 * Only does generic scsi ioctls. 1211 */ 1212 int 1213 seioctl(dev, cmd, addr, flag, p) 1214 dev_t dev; 1215 u_long cmd; 1216 caddr_t addr; 1217 int flag; 1218 struct proc *p; 1219 { 1220 struct se_softc *sc = se_cd.cd_devs[SEUNIT(dev)]; 1221 1222 return (scsipi_do_ioctl(sc->sc_link, dev, cmd, addr, flag, p)); 1223 } 1224