1 /* $NetBSD: if_se.c,v 1.13 1998/01/12 09:49:14 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 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 in 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 "bpfilter.h" 62 63 #include <sys/types.h> 64 #include <sys/param.h> 65 #include <sys/systm.h> 66 #include <sys/syslog.h> 67 #include <sys/kernel.h> 68 #include <sys/file.h> 69 #include <sys/stat.h> 70 #include <sys/ioctl.h> 71 #include <sys/buf.h> 72 #include <sys/uio.h> 73 #include <sys/malloc.h> 74 #include <sys/errno.h> 75 #include <sys/device.h> 76 #include <sys/disklabel.h> 77 #include <sys/disk.h> 78 #include <sys/proc.h> 79 #include <sys/conf.h> 80 81 #include <dev/scsipi/scsipi_all.h> 82 #include <dev/scsipi/scsi_ctron_ether.h> 83 #include <dev/scsipi/scsiconf.h> 84 85 #include <sys/mbuf.h> 86 87 #include <sys/socket.h> 88 #include <net/if.h> 89 #include <net/if_dl.h> 90 #include <net/if_ether.h> 91 #include <net/if_media.h> 92 93 #ifdef INET 94 #include <netinet/in.h> 95 #include <netinet/if_inarp.h> 96 #endif 97 98 #ifdef NS 99 #include <netns/ns.h> 100 #include <netns/ns_if.h> 101 #endif 102 103 #ifdef NETATALK 104 #include <netatalk/at.h> 105 #endif 106 107 #if defined(CCITT) && defined(LLC) 108 #include <sys/socketvar.h> 109 #include <netccitt/x25.h> 110 #include <netccitt/pk.h> 111 #include <netccitt/pk_var.h> 112 #include <netccitt/pk_extern.h> 113 #endif 114 115 #if NBPFILTER > 0 116 #include <net/bpf.h> 117 #include <net/bpfdesc.h> 118 #endif 119 120 #define SETIMEOUT 1000 121 #define SEOUTSTANDING 4 122 #define SERETRIES 4 123 #define SE_PREFIX 4 124 #define ETHER_CRC 4 125 #define SEMINSIZE 60 126 127 /* Make this big enough for an ETHERMTU packet in promiscuous mode. */ 128 #define MAX_SNAP (ETHERMTU + sizeof(struct ether_header) + \ 129 SE_PREFIX + ETHER_CRC) 130 131 /* 10 full length packets appears to be the max ever returned. 16k is OK */ 132 #define RBUF_LEN (16 * 1024) 133 134 /* Tuning parameters: 135 * The EA41x only returns a maximum of 10 packets (regardless of size). 136 * We will attempt to adapt to polling fast enough to get RDATA_GOAL packets 137 * per read 138 */ 139 #define RDATA_MAX 10 140 #define RDATA_GOAL 8 141 142 /* se_poll and se_poll0 are the normal polling rate and the minimum 143 * polling rate respectively. se_poll0 should be chosen so that at 144 * maximum ethernet speed, we will read nearly RDATA_MAX packets. se_poll 145 * should be chosen for reasonable maximum latency. 146 * In practice, if we are being saturated with min length packets, we 147 * can't poll fast enough. Polling with zero delay actually 148 * worsens performance. se_poll0 is enforced to be always at least 1 149 */ 150 #define SE_POLL 40 /* default in milliseconds */ 151 #define SE_POLL0 10 /* default in milliseconds */ 152 int se_poll = 0; /* Delay in ticks set at attach time */ 153 int se_poll0 = 0; 154 int se_max_received = 0; /* Instrumentation */ 155 156 #define PROTOCMD(p, d) \ 157 ((d) = (p)) 158 159 #define PROTOCMD_DECL(name, val) \ 160 static const struct scsi_ctron_ether_generic name = val 161 162 #define PROTOCMD_DECL_SPECIAL(name, val) \ 163 static const struct __CONCAT(scsi_,name) name = val 164 165 /* Command initializers for commands using scsi_ctron_ether_generic */ 166 PROTOCMD_DECL(ctron_ether_send, {CTRON_ETHER_SEND}); 167 PROTOCMD_DECL(ctron_ether_add_proto, {CTRON_ETHER_ADD_PROTO}); 168 PROTOCMD_DECL(ctron_ether_get_addr, {CTRON_ETHER_GET_ADDR}); 169 PROTOCMD_DECL(ctron_ether_set_media, {CTRON_ETHER_SET_MEDIA}); 170 PROTOCMD_DECL(ctron_ether_set_addr, {CTRON_ETHER_SET_ADDR}); 171 PROTOCMD_DECL(ctron_ether_set_multi, {CTRON_ETHER_SET_MULTI}); 172 PROTOCMD_DECL(ctron_ether_remove_multi, {CTRON_ETHER_REMOVE_MULTI}); 173 174 /* Command initializers for commands using their own structures */ 175 PROTOCMD_DECL_SPECIAL(ctron_ether_recv, {CTRON_ETHER_RECV}); 176 PROTOCMD_DECL_SPECIAL(ctron_ether_set_mode, {CTRON_ETHER_SET_MODE}); 177 178 struct se_softc { 179 struct device sc_dev; 180 struct ethercom sc_ethercom; /* Ethernet common part */ 181 struct scsipi_link *sc_link; /* contains our targ, lun, etc. */ 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 }; 195 196 cdev_decl(se); 197 198 #ifdef __BROKEN_INDIRECT_CONFIG 199 static int sematch __P((struct device *, void *, void *)); 200 #else 201 static int sematch __P((struct device *, struct cfdata *, void *)); 202 #endif 203 static void seattach __P((struct device *, struct device *, void *)); 204 205 static void se_ifstart __P((struct ifnet *)); 206 static void sestart __P((void *)); 207 208 static void sedone __P((struct scsipi_xfer *)); 209 static int se_ioctl __P((struct ifnet *, u_long, caddr_t)); 210 static void sewatchdog __P((struct ifnet *)); 211 212 static __inline u_int16_t ether_cmp __P((void *, void *)); 213 static void se_recv __P((void *)); 214 static struct mbuf *se_get __P((struct se_softc *, char *, int)); 215 static int se_read __P((struct se_softc *, char *, int)); 216 static int se_reset __P((struct se_softc *)); 217 static int se_add_proto __P((struct se_softc *, int)); 218 static int se_get_addr __P((struct se_softc *, u_int8_t *)); 219 static int se_set_media __P((struct se_softc *, int)); 220 static int se_init __P((struct se_softc *)); 221 static int se_set_multi __P((struct se_softc *, u_int8_t *)); 222 static int se_remove_multi __P((struct se_softc *, u_int8_t *)); 223 #if 0 224 static int sc_set_all_multi __P((struct se_softc *, int)); 225 #endif 226 static void se_stop __P((struct se_softc *)); 227 static __inline int se_scsipi_cmd __P((struct scsipi_link *sc_link, 228 struct scsipi_generic *scsipi_cmd, 229 int cmdlen, u_char *data_addr, int datalen, 230 int retries, int timeout, struct buf *bp, 231 int flags)); 232 static void se_delayed_ifstart __P((void *)); 233 static int se_set_mode(struct se_softc *, int, int); 234 235 struct cfattach se_ca = { 236 sizeof(struct se_softc), sematch, seattach 237 }; 238 239 extern struct cfdriver se_cd; 240 241 struct scsipi_device se_switch = { 242 NULL, /* Use default error handler */ 243 sestart, /* have a queue, served by this */ 244 NULL, /* have no async handler */ 245 sedone, /* deal with stats at interrupt time */ 246 }; 247 248 struct scsipi_inquiry_pattern se_patterns[] = { 249 {T_PROCESSOR, T_FIXED, 250 "CABLETRN", "EA412", ""}, 251 {T_PROCESSOR, T_FIXED, 252 "Cabletrn", "EA412", ""}, 253 }; 254 255 /* 256 * Compare two Ether/802 addresses for equality, inlined and 257 * unrolled for speed. 258 * Note: use this like bcmp() 259 */ 260 static __inline u_int16_t 261 ether_cmp(one, two) 262 void *one, *two; 263 { 264 register u_int16_t *a = (u_int16_t *) one; 265 register u_int16_t *b = (u_int16_t *) two; 266 register u_int16_t diff; 267 268 diff = (a[0] - b[0]) | (a[1] - b[1]) | (a[2] - b[2]); 269 270 return (diff); 271 } 272 273 #define ETHER_CMP ether_cmp 274 275 static int 276 sematch(parent, match, aux) 277 struct device *parent; 278 #ifdef __BROKEN_INDIRECT_CONFIG 279 void *match; 280 #else 281 struct cfdata *match; 282 #endif 283 void *aux; 284 { 285 struct scsipibus_attach_args *sa = aux; 286 int priority; 287 288 (void)scsipi_inqmatch(&sa->sa_inqbuf, 289 (caddr_t)se_patterns, sizeof(se_patterns) / sizeof(se_patterns[0]), 290 sizeof(se_patterns[0]), &priority); 291 return (priority); 292 } 293 294 /* 295 * The routine called by the low level scsi routine when it discovers 296 * a device suitable for this driver. 297 */ 298 static void 299 seattach(parent, self, aux) 300 struct device *parent, *self; 301 void *aux; 302 { 303 struct se_softc *sc = (void *)self; 304 struct scsipibus_attach_args *sa = aux; 305 struct scsipi_link *sc_link = sa->sa_sc_link; 306 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 307 u_int8_t myaddr[ETHER_ADDR_LEN]; 308 309 printf("\n"); 310 SC_DEBUG(sc_link, SDEV_DB2, ("seattach: ")); 311 312 /* 313 * Store information needed to contact our base driver 314 */ 315 sc->sc_link = sc_link; 316 sc_link->device = &se_switch; 317 sc_link->device_softc = sc; 318 if (sc_link->openings > SEOUTSTANDING) 319 sc_link->openings = SEOUTSTANDING; 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 bcopy(sc->sc_dev.dv_xname, ifp->if_xname, IFNAMSIZ); 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; 348 349 /* Attach the interface. */ 350 if_attach(ifp); 351 ether_ifattach(ifp, myaddr); 352 353 #if NBPFILTER > 0 354 bpfattach(&ifp->if_bpf, ifp, DLT_EN10MB, sizeof(struct ether_header)); 355 #endif 356 } 357 358 359 static __inline int 360 se_scsipi_cmd(sc_link, scsipi_cmd, cmdlen, data_addr, datalen, 361 retries, timeout, bp, flags) 362 struct scsipi_link *sc_link; 363 struct scsipi_generic *scsipi_cmd; 364 int cmdlen; 365 u_char *data_addr; 366 int datalen; 367 int retries; 368 int timeout; 369 struct buf *bp; 370 int flags; 371 { 372 int error; 373 int s = splbio(); 374 375 error = scsipi_command(sc_link, scsipi_cmd, cmdlen, data_addr, 376 datalen, retries, timeout, bp, flags); 377 splx(s); 378 return (error); 379 } 380 381 /* Start routine for calling from scsi sub system */ 382 static void 383 sestart(v) 384 void *v; 385 { 386 struct se_softc *sc = (struct se_softc *) v; 387 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 388 int s = splnet(); 389 390 se_ifstart(ifp); 391 (void) splx(s); 392 } 393 394 static void 395 se_delayed_ifstart(v) 396 void *v; 397 { 398 struct ifnet *ifp = v; 399 int s = splnet(); 400 401 ifp->if_flags &= ~IFF_OACTIVE; 402 se_ifstart(ifp); 403 splx(s); 404 } 405 406 /* 407 * Start transmission on the interface. 408 * Always called at splnet(). 409 */ 410 static void 411 se_ifstart(ifp) 412 struct ifnet *ifp; 413 { 414 struct se_softc *sc = ifp->if_softc; 415 struct scsi_ctron_ether_generic send_cmd; 416 struct mbuf *m, *m0; 417 int len, error; 418 u_char *cp; 419 420 /* Don't transmit if interface is busy or not running */ 421 if ((ifp->if_flags & (IFF_RUNNING|IFF_OACTIVE)) != IFF_RUNNING) 422 return; 423 424 IF_DEQUEUE(&ifp->if_snd, m0); 425 if (m0 == 0) 426 return; 427 #if NBPFILTER > 0 428 /* If BPF is listening on this interface, let it see the 429 * packet before we commit it to the wire. 430 */ 431 if (ifp->if_bpf) 432 bpf_mtap(ifp->if_bpf, m0); 433 #endif 434 435 /* We need to use m->m_pkthdr.len, so require the header */ 436 if ((m0->m_flags & M_PKTHDR) == 0) 437 panic("ctscstart: no header mbuf"); 438 len = m0->m_pkthdr.len; 439 440 /* Mark the interface busy. */ 441 ifp->if_flags |= IFF_OACTIVE; 442 443 /* Chain; copy into linear buffer we allocated at attach time. */ 444 cp = sc->sc_tbuf; 445 for (m = m0; m != NULL; ) { 446 bcopy(mtod(m, u_char *), cp, m->m_len); 447 cp += m->m_len; 448 MFREE(m, m0); 449 m = m0; 450 } 451 if (len < SEMINSIZE) { 452 #ifdef SEDEBUG 453 if (sc->sc_debug) 454 printf("se: packet size %d (%d) < %d\n", len, 455 cp - (u_char *)sc->sc_tbuf, SEMINSIZE); 456 #endif 457 bzero(cp, SEMINSIZE - len); 458 len = SEMINSIZE; 459 } 460 461 /* Fill out SCSI command. */ 462 PROTOCMD(ctron_ether_send, send_cmd); 463 _lto2b(len, send_cmd.length); 464 465 /* Send command to device. */ 466 error = se_scsipi_cmd(sc->sc_link, 467 (struct scsipi_generic *)&send_cmd, sizeof(send_cmd), 468 sc->sc_tbuf, len, SERETRIES, 469 SETIMEOUT, NULL, SCSI_NOSLEEP|SCSI_DATA_OUT); 470 if (error) { 471 printf("%s: not queued, error %d\n", 472 sc->sc_dev.dv_xname, error); 473 ifp->if_oerrors++; 474 ifp->if_flags &= ~IFF_OACTIVE; 475 } else 476 ifp->if_opackets++; 477 if (sc->sc_flags & SE_NEED_RECV) { 478 sc->sc_flags &= ~SE_NEED_RECV; 479 se_recv((void *) sc); 480 } 481 } 482 483 484 /* 485 * Called from the scsibus layer via our scsi device switch. 486 */ 487 static void 488 sedone(xs) 489 struct scsipi_xfer *xs; 490 { 491 int error; 492 struct se_softc *sc = xs->sc_link->device_softc; 493 struct scsipi_generic *cmd = xs->cmd; 494 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 495 int s; 496 497 error = !(xs->error == XS_NOERROR); 498 499 s = splnet(); 500 if(IS_SEND(cmd)) { 501 if (xs->error == XS_BUSY) { 502 printf("se: busy, retry txmit\n"); 503 timeout(se_delayed_ifstart, ifp, hz); 504 } else { 505 ifp->if_flags &= ~IFF_OACTIVE; 506 /* the generic scsipi_done will call 507 * sestart (through scsipi_free_xs). 508 */ 509 } 510 } else if(IS_RECV(cmd)) { 511 /* RECV complete */ 512 /* pass data up. reschedule a recv */ 513 /* scsipi_free_xs will call start. Harmless. */ 514 if (error) { 515 /* Reschedule after a delay */ 516 timeout(se_recv, (void *)sc, se_poll); 517 } else { 518 int n, ntimeo; 519 n = se_read(sc, xs->data, xs->datalen - xs->resid); 520 if (n > se_max_received) 521 se_max_received = n; 522 if (n == 0) 523 ntimeo = se_poll; 524 else if (n >= RDATA_MAX) 525 ntimeo = se_poll0; 526 else { 527 ntimeo = sc->sc_last_timeout; 528 ntimeo = (ntimeo * RDATA_GOAL)/n; 529 ntimeo = (ntimeo < se_poll0? 530 se_poll0: ntimeo); 531 ntimeo = (ntimeo > se_poll? 532 se_poll: ntimeo); 533 } 534 sc->sc_last_timeout = ntimeo; 535 if (ntimeo == se_poll0 && 536 ifp->if_snd.ifq_head) 537 /* Output is pending. Do next recv 538 * after the next send. */ 539 sc->sc_flags |= SE_NEED_RECV; 540 else { 541 timeout(se_recv, (void *)sc, ntimeo); 542 } 543 } 544 } 545 splx(s); 546 } 547 548 static void 549 se_recv(v) 550 void *v; 551 { 552 /* do a recv command */ 553 struct se_softc *sc = (struct se_softc *) v; 554 struct scsi_ctron_ether_recv recv_cmd; 555 int error; 556 557 PROTOCMD(ctron_ether_recv, recv_cmd); 558 559 error = se_scsipi_cmd(sc->sc_link, 560 (struct scsipi_generic *)&recv_cmd, sizeof(recv_cmd), 561 sc->sc_rbuf, RBUF_LEN, SERETRIES, SETIMEOUT, NULL, 562 SCSI_NOSLEEP|SCSI_DATA_IN); 563 if (error) 564 timeout(se_recv, (void *)sc, se_poll); 565 } 566 567 /* 568 * We copy the data into mbufs. When full cluster sized units are present 569 * we copy into clusters. 570 */ 571 static struct mbuf * 572 se_get(sc, data, totlen) 573 struct se_softc *sc; 574 char *data; 575 int totlen; 576 { 577 struct mbuf *m; 578 struct mbuf *top, **mp; 579 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 580 int len, pad; 581 582 MGETHDR(m, M_DONTWAIT, MT_DATA); 583 if (m == 0) 584 return (0); 585 m->m_pkthdr.rcvif = ifp; 586 m->m_pkthdr.len = totlen; 587 pad = ALIGN(sizeof(struct ether_header)) - sizeof(struct ether_header); 588 m->m_data += pad; 589 len = MHLEN - pad; 590 top = 0; 591 mp = ⊤ 592 593 while (totlen > 0) { 594 if (top) { 595 MGET(m, M_DONTWAIT, MT_DATA); 596 if (m == 0) { 597 m_freem(top); 598 return (0); 599 } 600 len = MLEN; 601 } 602 if (totlen >= MINCLSIZE) { 603 MCLGET(m, M_DONTWAIT); 604 if ((m->m_flags & M_EXT) == 0) { 605 m_free(m); 606 m_freem(top); 607 return (0); 608 } 609 len = MCLBYTES; 610 } 611 m->m_len = len = min(totlen, len); 612 bcopy(data, mtod(m, caddr_t), len); 613 data += len; 614 totlen -= len; 615 *mp = m; 616 mp = &m->m_next; 617 } 618 619 return (top); 620 } 621 622 /* 623 * Pass packets to higher levels. 624 */ 625 static int 626 se_read(sc, data, datalen) 627 register struct se_softc *sc; 628 char *data; 629 int datalen; 630 { 631 struct mbuf *m; 632 struct ether_header *eh; 633 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 634 int n; 635 636 n = 0; 637 while (datalen >= 2) { 638 int len = _2btol(data); 639 data += 2; 640 datalen -= 2; 641 642 if (len == 0) 643 break; 644 #ifdef SEDEBUG 645 if (sc->sc_debug) { 646 printf("se_read: datalen = %d, packetlen = %d, proto = 0x%04x\n", datalen, len, 647 ntohs(((struct ether_header *)data)->ether_type)); 648 } 649 #endif 650 if (len <= sizeof(struct ether_header) || 651 len > MAX_SNAP) { 652 #ifdef SEDEBUG 653 printf("%s: invalid packet size %d; dropping\n", 654 sc->sc_dev.dv_xname, len); 655 #endif 656 ifp->if_ierrors++; 657 goto next_packet; 658 } 659 660 /* Don't need crc. Must keep ether header for BPF */ 661 m = se_get(sc, data, len - ETHER_CRC); 662 if (m == 0) { 663 #ifdef SEDEBUG 664 if (sc->sc_debug) 665 printf("se_read: se_get returned null\n"); 666 #endif 667 ifp->if_ierrors++; 668 goto next_packet; 669 } 670 if ((ifp->if_flags & IFF_PROMISC) != 0) { 671 m_adj(m, SE_PREFIX); 672 } 673 ifp->if_ipackets++; 674 675 /* We assume that the header fit entirely in one mbuf. */ 676 eh = mtod(m, struct ether_header *); 677 678 #if NBPFILTER > 0 679 /* 680 * Check if there's a BPF listener on this interface. 681 * If so, hand off the raw packet to BPF. 682 */ 683 if (ifp->if_bpf) { 684 bpf_mtap(ifp->if_bpf, m); 685 686 /* Note that the interface cannot be in 687 * promiscuous mode if there are no BPF 688 * listeners. And if we are in promiscuous 689 * mode, we have to check if this packet is 690 * really ours. 691 */ 692 if ((ifp->if_flags & IFF_PROMISC) != 0 && 693 (eh->ether_dhost[0] & 1) == 0 && /* !mcast and !bcast */ 694 ETHER_CMP(eh->ether_dhost, LLADDR(ifp->if_sadl))) { 695 m_freem(m); 696 goto next_packet; 697 } 698 } 699 #endif 700 701 /* Pass the packet up, with the ether header sort-of removed. */ 702 m_adj(m, sizeof(struct ether_header)); 703 ether_input(ifp, eh, m); 704 705 next_packet: 706 data += len; 707 datalen -= len; 708 n++; 709 } 710 return (n); 711 } 712 713 714 static void 715 sewatchdog(ifp) 716 struct ifnet *ifp; 717 { 718 struct se_softc *sc = ifp->if_softc; 719 720 log(LOG_ERR, "%s: device timeout\n", sc->sc_dev.dv_xname); 721 ++ifp->if_oerrors; 722 723 se_reset(sc); 724 } 725 726 static int 727 se_reset(sc) 728 struct se_softc *sc; 729 { 730 int error; 731 int s = splnet(); 732 #if 0 733 /* Maybe we don't *really* want to reset the entire bus 734 * because the ctron isn't working. We would like to send a 735 * "BUS DEVICE RESET" message, but don't think the ctron 736 * understands it. 737 */ 738 error = se_scsipi_cmd(sc->sc_link, 0, 0, 0, 0, SERETRIES, 2000, NULL, 739 SCSI_RESET); 740 #endif 741 error = se_init(sc); 742 splx(s); 743 return (error); 744 } 745 746 static int 747 se_add_proto(sc, proto) 748 struct se_softc *sc; 749 int proto; 750 { 751 int error; 752 struct scsi_ctron_ether_generic add_proto_cmd; 753 u_int8_t data[2]; 754 _lto2b(proto, data); 755 #ifdef SEDEBUG 756 if (sc->sc_debug) 757 printf("se: adding proto 0x%02x%02x\n", data[0], data[1]); 758 #endif 759 760 PROTOCMD(ctron_ether_add_proto, add_proto_cmd); 761 _lto2b(sizeof(data), add_proto_cmd.length); 762 error = se_scsipi_cmd(sc->sc_link, 763 (struct scsipi_generic *) &add_proto_cmd, sizeof(add_proto_cmd), 764 data, sizeof(data), SERETRIES, SETIMEOUT, NULL, SCSI_DATA_OUT); 765 return (error); 766 } 767 768 static int 769 se_get_addr(sc, myaddr) 770 struct se_softc *sc; 771 u_int8_t *myaddr; 772 { 773 int error; 774 struct scsi_ctron_ether_generic get_addr_cmd; 775 776 PROTOCMD(ctron_ether_get_addr, get_addr_cmd); 777 _lto2b(ETHER_ADDR_LEN, get_addr_cmd.length); 778 error = se_scsipi_cmd(sc->sc_link, 779 (struct scsipi_generic *) &get_addr_cmd, sizeof(get_addr_cmd), 780 myaddr, ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, SCSI_DATA_IN); 781 printf("%s: ethernet address %s\n", sc->sc_dev.dv_xname, 782 ether_sprintf(myaddr)); 783 return (error); 784 } 785 786 787 static int 788 se_set_media(sc, type) 789 struct se_softc *sc; 790 int type; 791 { 792 int error; 793 struct scsi_ctron_ether_generic set_media_cmd; 794 795 PROTOCMD(ctron_ether_set_media, set_media_cmd); 796 set_media_cmd.byte3 = type; 797 error = se_scsipi_cmd(sc->sc_link, 798 (struct scsipi_generic *) &set_media_cmd, sizeof(set_media_cmd), 799 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 800 return (error); 801 } 802 803 static int 804 se_set_mode(sc, len, mode) 805 struct se_softc *sc; 806 int len; 807 int mode; 808 { 809 int error; 810 struct scsi_ctron_ether_set_mode set_mode_cmd; 811 812 PROTOCMD(ctron_ether_set_mode, set_mode_cmd); 813 set_mode_cmd.mode = mode; 814 _lto2b(len, set_mode_cmd.length); 815 error = se_scsipi_cmd(sc->sc_link, 816 (struct scsipi_generic *) &set_mode_cmd, sizeof(set_mode_cmd), 817 0, 0, SERETRIES, SETIMEOUT, NULL, 0); 818 return (error); 819 } 820 821 822 static int 823 se_init(sc) 824 struct se_softc *sc; 825 { 826 struct ifnet *ifp = &sc->sc_ethercom.ec_if; 827 struct scsi_ctron_ether_generic set_addr_cmd; 828 int error; 829 830 #if NBPFILTER > 0 831 if (ifp->if_flags & IFF_PROMISC) { 832 error = se_set_mode(sc, MAX_SNAP, 1); 833 } 834 else 835 #endif 836 error = se_set_mode(sc, ETHERMTU + sizeof(struct ether_header), 837 0); 838 if (error != 0) 839 return (error); 840 841 PROTOCMD(ctron_ether_set_addr, set_addr_cmd); 842 _lto2b(ETHER_ADDR_LEN, set_addr_cmd.length); 843 error = se_scsipi_cmd(sc->sc_link, 844 (struct scsipi_generic *) &set_addr_cmd, sizeof(set_addr_cmd), 845 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN, SERETRIES, SETIMEOUT, NULL, 846 SCSI_DATA_OUT); 847 if (error != 0) 848 return (error); 849 850 if ((sc->protos & PROTO_IP) && 851 (error = se_add_proto(sc, ETHERTYPE_IP)) != 0) 852 return (error); 853 if ((sc->protos & PROTO_ARP) && 854 (error = se_add_proto(sc, ETHERTYPE_ARP)) != 0) 855 return (error); 856 if ((sc->protos & PROTO_REVARP) && 857 (error = se_add_proto(sc, ETHERTYPE_REVARP)) != 0) 858 return (error); 859 #ifdef NETATALK 860 if ((sc->protos & PROTO_AT) && 861 (error = se_add_proto(sc, ETHERTYPE_AT)) != 0) 862 return (error); 863 if ((sc->protos & PROTO_AARP) && 864 (error = se_add_proto(sc, ETHERTYPE_AARP)) != 0) 865 return (error); 866 #endif 867 868 if ((ifp->if_flags & (IFF_RUNNING|IFF_UP)) == IFF_UP) { 869 ifp->if_flags |= IFF_RUNNING; 870 se_recv(sc); 871 ifp->if_flags &= ~IFF_OACTIVE; 872 se_ifstart(ifp); 873 } 874 return (error); 875 } 876 877 static int 878 se_set_multi(sc, addr) 879 struct se_softc *sc; 880 u_int8_t *addr; 881 { 882 struct scsi_ctron_ether_generic set_multi_cmd; 883 int error; 884 885 if (sc->sc_debug) 886 printf("%s: set_set_multi: %s\n", sc->sc_dev.dv_xname, 887 ether_sprintf(addr)); 888 889 PROTOCMD(ctron_ether_set_multi, set_multi_cmd); 890 _lto2b(sizeof(addr), set_multi_cmd.length); 891 error = se_scsipi_cmd(sc->sc_link, 892 (struct scsipi_generic *) &set_multi_cmd, sizeof(set_multi_cmd), 893 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, SCSI_DATA_OUT); 894 return (error); 895 } 896 897 static int 898 se_remove_multi(sc, addr) 899 struct se_softc *sc; 900 u_int8_t *addr; 901 { 902 struct scsi_ctron_ether_generic remove_multi_cmd; 903 int error; 904 905 if (sc->sc_debug) 906 printf("%s: se_remove_multi: %s\n", sc->sc_dev.dv_xname, 907 ether_sprintf(addr)); 908 909 PROTOCMD(ctron_ether_remove_multi, remove_multi_cmd); 910 _lto2b(sizeof(addr), remove_multi_cmd.length); 911 error = se_scsipi_cmd(sc->sc_link, 912 (struct scsipi_generic *) &remove_multi_cmd, 913 sizeof(remove_multi_cmd), 914 addr, sizeof(addr), SERETRIES, SETIMEOUT, NULL, SCSI_DATA_OUT); 915 return (error); 916 } 917 918 #if 0 /* not used --thorpej */ 919 static int 920 sc_set_all_multi(sc, set) 921 struct se_softc *sc; 922 int set; 923 { 924 int error = 0; 925 u_int8_t *addr; 926 struct ethercom *ac = &sc->sc_ethercom; 927 struct ether_multi *enm; 928 struct ether_multistep step; 929 930 ETHER_FIRST_MULTI(step, ac, enm); 931 while (enm != NULL) { 932 if (ETHER_CMP(enm->enm_addrlo, enm->enm_addrhi)) { 933 /* 934 * We must listen to a range of multicast addresses. 935 * For now, just accept all multicasts, rather than 936 * trying to set only those filter bits needed to match 937 * the range. (At this time, the only use of address 938 * ranges is for IP multicast routing, for which the 939 * range is big enough to require all bits set.) 940 */ 941 /* We have no way of adding a range to this device. 942 * stepping through all addresses in the range is 943 * typically not possible. The only real alternative 944 * is to go into promicuous mode and filter by hand. 945 */ 946 return (ENODEV); 947 948 } 949 950 addr = enm->enm_addrlo; 951 if ((error = set ? se_set_multi(sc, addr) : 952 se_remove_multi(sc, addr)) != 0) 953 return (error); 954 ETHER_NEXT_MULTI(step, enm); 955 } 956 return (error); 957 } 958 #endif /* not used */ 959 960 static void 961 se_stop(sc) 962 struct se_softc *sc; 963 { 964 965 /* Don't schedule any reads */ 966 untimeout(se_recv, sc); 967 968 /* How can we abort any scsi cmds in progress? */ 969 } 970 971 972 /* 973 * Process an ioctl request. 974 */ 975 static int 976 se_ioctl(ifp, cmd, data) 977 register struct ifnet *ifp; 978 u_long cmd; 979 caddr_t data; 980 { 981 register struct se_softc *sc = ifp->if_softc; 982 struct ifaddr *ifa = (struct ifaddr *)data; 983 struct ifreq *ifr = (struct ifreq *)data; 984 int s, error = 0; 985 986 s = splnet(); 987 988 switch (cmd) { 989 990 case SIOCSIFADDR: 991 ifp->if_flags |= IFF_UP; 992 993 if ((error = se_set_media(sc, CMEDIA_AUTOSENSE) != 0)) 994 return (error); 995 996 switch (ifa->ifa_addr->sa_family) { 997 #ifdef INET 998 case AF_INET: 999 sc->protos |= (PROTO_IP | PROTO_ARP | PROTO_REVARP); 1000 if ((error = se_init(sc)) != 0) 1001 break; 1002 arp_ifinit(ifp, ifa); 1003 break; 1004 #endif 1005 #ifdef NS 1006 case AF_NS: 1007 { 1008 register struct ns_addr *ina = &IA_SNS(ifa)->sns_addr; 1009 1010 if (ns_nullhost(*ina)) 1011 ina->x_host = 1012 *(union ns_host *)LLADDR(ifp->if_sadl); 1013 else 1014 bcopy(ina->x_host.c_host, 1015 LLADDR(ifp->if_sadl), ETHER_ADDR_LEN); 1016 /* Set new address. */ 1017 1018 error = se_init(sc); 1019 break; 1020 } 1021 #endif 1022 #ifdef NETATALK 1023 case AF_APPLETALK: 1024 sc->protos |= (PROTO_AT | PROTO_AARP); 1025 if ((error = se_init(sc)) != 0) 1026 break; 1027 break; 1028 #endif 1029 default: 1030 error = se_init(sc); 1031 break; 1032 } 1033 break; 1034 1035 #if defined(CCITT) && defined(LLC) 1036 case SIOCSIFCONF_X25: 1037 ifp->if_flags |= IFF_UP; 1038 ifa->ifa_rtrequest = cons_rtrequest; /* XXX */ 1039 error = x25_llcglue(PRC_IFUP, ifa->ifa_addr); 1040 if (error == 0) 1041 error = se_init(sc); 1042 break; 1043 #endif /* CCITT && LLC */ 1044 1045 case SIOCSIFFLAGS: 1046 if ((ifp->if_flags & IFF_UP) == 0 && 1047 (ifp->if_flags & IFF_RUNNING) != 0) { 1048 /* 1049 * If interface is marked down and it is running, then 1050 * stop it. 1051 */ 1052 se_stop(sc); 1053 ifp->if_flags &= ~IFF_RUNNING; 1054 } else if ((ifp->if_flags & IFF_UP) != 0 && 1055 (ifp->if_flags & IFF_RUNNING) == 0) { 1056 /* 1057 * If interface is marked up and it is stopped, then 1058 * start it. 1059 */ 1060 error = se_init(sc); 1061 } else { 1062 /* 1063 * Reset the interface to pick up changes in any other 1064 * flags that affect hardware registers. 1065 */ 1066 error = se_init(sc); 1067 } 1068 #ifdef SEDEBUG 1069 if (ifp->if_flags & IFF_DEBUG) 1070 sc->sc_debug = 1; 1071 else 1072 sc->sc_debug = 0; 1073 #endif 1074 break; 1075 1076 case SIOCADDMULTI: 1077 if (ether_addmulti(ifr, &sc->sc_ethercom) == ENETRESET) 1078 error = se_set_multi(sc, ifr->ifr_addr.sa_data); 1079 else 1080 error = 0; 1081 break; 1082 case SIOCDELMULTI: 1083 if (ether_delmulti(ifr, &sc->sc_ethercom) == ENETRESET) 1084 error = se_remove_multi(sc, ifr->ifr_addr.sa_data); 1085 else 1086 error = 0; 1087 break; 1088 1089 default: 1090 1091 error = EINVAL; 1092 break; 1093 } 1094 1095 splx(s); 1096 return (error); 1097 } 1098 1099 #define SEUNIT(z) (minor(z)) 1100 /* 1101 * open the device. 1102 */ 1103 int 1104 seopen(dev, flag, fmt, p) 1105 dev_t dev; 1106 int flag, fmt; 1107 struct proc *p; 1108 { 1109 int unit; 1110 struct se_softc *sc; 1111 struct scsipi_link *sc_link; 1112 1113 unit = SEUNIT(dev); 1114 if (unit >= se_cd.cd_ndevs) 1115 return (ENXIO); 1116 sc = se_cd.cd_devs[unit]; 1117 if (sc == NULL) 1118 return (ENXIO); 1119 1120 sc_link = sc->sc_link; 1121 1122 SC_DEBUG(sc_link, SDEV_DB1, 1123 ("scopen: dev=0x%x (unit %d (of %d))\n", dev, unit, 1124 se_cd.cd_ndevs)); 1125 1126 sc_link->flags |= SDEV_OPEN; 1127 1128 SC_DEBUG(sc_link, SDEV_DB3, ("open complete\n")); 1129 return (0); 1130 } 1131 1132 /* 1133 * close the device.. only called if we are the LAST 1134 * occurence of an open device 1135 */ 1136 int 1137 seclose(dev, flag, fmt, p) 1138 dev_t dev; 1139 int flag, fmt; 1140 struct proc *p; 1141 { 1142 struct se_softc *sc = se_cd.cd_devs[SEUNIT(dev)]; 1143 1144 SC_DEBUG(sc->sc_link, SDEV_DB1, ("closing\n")); 1145 sc->sc_link->flags &= ~SDEV_OPEN; 1146 1147 return (0); 1148 } 1149 1150 /* 1151 * Perform special action on behalf of the user 1152 * Only does generic scsi ioctls. 1153 */ 1154 int 1155 seioctl(dev, cmd, addr, flag, p) 1156 dev_t dev; 1157 u_long cmd; 1158 caddr_t addr; 1159 int flag; 1160 struct proc *p; 1161 { 1162 register struct se_softc *sc = se_cd.cd_devs[SEUNIT(dev)]; 1163 1164 return (scsipi_do_ioctl(sc->sc_link, dev, cmd, addr, flag, p)); 1165 } 1166