if_fwe.c revision 177599
1/*- 2 * Copyright (c) 2002-2003 3 * Hidetoshi Shimokawa. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * 16 * This product includes software developed by Hidetoshi Shimokawa. 17 * 18 * 4. Neither the name of the author nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD: head/sys/dev/firewire/if_fwe.c 177599 2008-03-25 09:39:02Z ru $ 35 */ 36 37#ifdef HAVE_KERNEL_OPTION_HEADERS 38#include "opt_device_polling.h" 39#include "opt_inet.h" 40#endif 41 42#include <sys/param.h> 43#include <sys/kernel.h> 44#include <sys/malloc.h> 45#include <sys/mbuf.h> 46#include <sys/socket.h> 47#include <sys/sockio.h> 48#include <sys/sysctl.h> 49#include <sys/systm.h> 50#include <sys/module.h> 51#include <sys/bus.h> 52#include <machine/bus.h> 53 54#include <net/bpf.h> 55#include <net/ethernet.h> 56#include <net/if.h> 57#include <net/if_arp.h> 58#include <net/if_types.h> 59#ifdef __DragonFly__ 60#include <net/vlan/if_vlan_var.h> 61#include <bus/firewire/firewire.h> 62#include <bus/firewire/firewirereg.h> 63#include "if_fwevar.h" 64#else 65#include <net/if_vlan_var.h> 66 67#include <dev/firewire/firewire.h> 68#include <dev/firewire/firewirereg.h> 69#include <dev/firewire/if_fwevar.h> 70#endif 71 72#define FWEDEBUG if (fwedebug) if_printf 73#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 74 75/* network interface */ 76static void fwe_start (struct ifnet *); 77static int fwe_ioctl (struct ifnet *, u_long, caddr_t); 78static void fwe_init (void *); 79 80static void fwe_output_callback (struct fw_xfer *); 81static void fwe_as_output (struct fwe_softc *, struct ifnet *); 82static void fwe_as_input (struct fw_xferq *); 83 84static int fwedebug = 0; 85static int stream_ch = 1; 86static int tx_speed = 2; 87static int rx_queue_len = FWMAXQUEUE; 88 89MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface"); 90SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RW, &fwedebug, 0, ""); 91SYSCTL_DECL(_hw_firewire); 92SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0, 93 "Ethernet emulation subsystem"); 94SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RW, &stream_ch, 0, 95 "Stream channel to use"); 96SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RW, &tx_speed, 0, 97 "Transmission speed"); 98SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RW, &rx_queue_len, 99 0, "Length of the receive queue"); 100 101TUNABLE_INT("hw.firewire.fwe.stream_ch", &stream_ch); 102TUNABLE_INT("hw.firewire.fwe.tx_speed", &tx_speed); 103TUNABLE_INT("hw.firewire.fwe.rx_queue_len", &rx_queue_len); 104 105#ifdef DEVICE_POLLING 106static poll_handler_t fwe_poll; 107 108static void 109fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 110{ 111 struct fwe_softc *fwe; 112 struct firewire_comm *fc; 113 114 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 115 return; 116 117 fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 118 fc = fwe->fd.fc; 119 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 120} 121#endif /* DEVICE_POLLING */ 122 123static void 124fwe_identify(driver_t *driver, device_t parent) 125{ 126 BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent)); 127} 128 129static int 130fwe_probe(device_t dev) 131{ 132 device_t pa; 133 134 pa = device_get_parent(dev); 135 if(device_get_unit(dev) != device_get_unit(pa)){ 136 return(ENXIO); 137 } 138 139 device_set_desc(dev, "Ethernet over FireWire"); 140 return (0); 141} 142 143static int 144fwe_attach(device_t dev) 145{ 146 struct fwe_softc *fwe; 147 struct ifnet *ifp; 148 int unit, s; 149#if defined(__DragonFly__) || __FreeBSD_version < 500000 150 u_char *eaddr; 151#else 152 u_char eaddr[6]; 153#endif 154 struct fw_eui64 *eui; 155 156 fwe = ((struct fwe_softc *)device_get_softc(dev)); 157 unit = device_get_unit(dev); 158 159 bzero(fwe, sizeof(struct fwe_softc)); 160 mtx_init(&fwe->mtx, "fwe", NULL, MTX_DEF); 161 /* XXX */ 162 fwe->stream_ch = stream_ch; 163 fwe->dma_ch = -1; 164 165 fwe->fd.fc = device_get_ivars(dev); 166 if (tx_speed < 0) 167 tx_speed = fwe->fd.fc->speed; 168 169 fwe->fd.dev = dev; 170 fwe->fd.post_explore = NULL; 171 fwe->eth_softc.fwe = fwe; 172 173 fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM; 174 fwe->pkt_hdr.mode.stream.sy = 0; 175 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 176 177 /* generate fake MAC address: first and last 3bytes from eui64 */ 178#define LOCAL (0x02) 179#define GROUP (0x01) 180#if defined(__DragonFly__) || __FreeBSD_version < 500000 181 eaddr = &IFP2ENADDR(fwe->eth_softc.ifp)[0]; 182#endif 183 184 185 eui = &fwe->fd.fc->eui; 186 eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP; 187 eaddr[1] = FW_EUI64_BYTE(eui, 1); 188 eaddr[2] = FW_EUI64_BYTE(eui, 2); 189 eaddr[3] = FW_EUI64_BYTE(eui, 5); 190 eaddr[4] = FW_EUI64_BYTE(eui, 6); 191 eaddr[5] = FW_EUI64_BYTE(eui, 7); 192 printf("if_fwe%d: Fake Ethernet address: " 193 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit, 194 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]); 195 196 /* fill the rest and attach interface */ 197 ifp = fwe->eth_softc.ifp = if_alloc(IFT_ETHER); 198 if (ifp == NULL) { 199 device_printf(dev, "can not if_alloc()\n"); 200 return (ENOSPC); 201 } 202 ifp->if_softc = &fwe->eth_softc; 203 204#if __FreeBSD_version >= 501113 || defined(__DragonFly__) 205 if_initname(ifp, device_get_name(dev), unit); 206#else 207 ifp->if_unit = unit; 208 ifp->if_name = "fwe"; 209#endif 210 ifp->if_init = fwe_init; 211#if defined(__DragonFly__) || __FreeBSD_version < 500000 212 ifp->if_output = ether_output; 213#endif 214 ifp->if_start = fwe_start; 215 ifp->if_ioctl = fwe_ioctl; 216 ifp->if_mtu = ETHERMTU; 217 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 218 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 219 220 s = splimp(); 221#if defined(__DragonFly__) || __FreeBSD_version < 500000 222 ether_ifattach(ifp, 1); 223#else 224 ether_ifattach(ifp, eaddr); 225#endif 226 splx(s); 227 228 /* Tell the upper layer(s) we support long frames. */ 229 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); 230#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 231 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_POLLING; 232 ifp->if_capenable |= IFCAP_VLAN_MTU; 233#endif 234 235 236 FWEDEBUG(ifp, "interface created\n"); 237 return 0; 238} 239 240static void 241fwe_stop(struct fwe_softc *fwe) 242{ 243 struct firewire_comm *fc; 244 struct fw_xferq *xferq; 245 struct ifnet *ifp = fwe->eth_softc.ifp; 246 struct fw_xfer *xfer, *next; 247 int i; 248 249 fc = fwe->fd.fc; 250 251 if (fwe->dma_ch >= 0) { 252 xferq = fc->ir[fwe->dma_ch]; 253 254 if (xferq->flag & FWXFERQ_RUNNING) 255 fc->irx_disable(fc, fwe->dma_ch); 256 xferq->flag &= 257 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 258 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 259 xferq->hand = NULL; 260 261 for (i = 0; i < xferq->bnchunk; i ++) 262 m_freem(xferq->bulkxfer[i].mbuf); 263 free(xferq->bulkxfer, M_FWE); 264 265 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL; 266 xfer = next) { 267 next = STAILQ_NEXT(xfer, link); 268 fw_xfer_free(xfer); 269 } 270 STAILQ_INIT(&fwe->xferlist); 271 272 xferq->bulkxfer = NULL; 273 fwe->dma_ch = -1; 274 } 275 276#if defined(__FreeBSD__) 277 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 278#else 279 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 280#endif 281} 282 283static int 284fwe_detach(device_t dev) 285{ 286 struct fwe_softc *fwe; 287 struct ifnet *ifp; 288 int s; 289 290 fwe = device_get_softc(dev); 291 ifp = fwe->eth_softc.ifp; 292 293#ifdef DEVICE_POLLING 294 if (ifp->if_capenable & IFCAP_POLLING) 295 ether_poll_deregister(ifp); 296#endif 297 s = splimp(); 298 299 fwe_stop(fwe); 300#if defined(__DragonFly__) || __FreeBSD_version < 500000 301 ether_ifdetach(ifp, 1); 302#else 303 ether_ifdetach(ifp); 304 if_free(ifp); 305#endif 306 307 splx(s); 308 mtx_destroy(&fwe->mtx); 309 return 0; 310} 311 312static void 313fwe_init(void *arg) 314{ 315 struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe; 316 struct firewire_comm *fc; 317 struct ifnet *ifp = fwe->eth_softc.ifp; 318 struct fw_xferq *xferq; 319 struct fw_xfer *xfer; 320 struct mbuf *m; 321 int i; 322 323 FWEDEBUG(ifp, "initializing\n"); 324 325 /* XXX keep promiscoud mode */ 326 ifp->if_flags |= IFF_PROMISC; 327 328 fc = fwe->fd.fc; 329 if (fwe->dma_ch < 0) { 330 fwe->dma_ch = fw_open_isodma(fc, /* tx */0); 331 if (fwe->dma_ch < 0) 332 return; 333 xferq = fc->ir[fwe->dma_ch]; 334 xferq->flag |= FWXFERQ_EXTBUF | 335 FWXFERQ_HANDLER | FWXFERQ_STREAM; 336 fwe->stream_ch = stream_ch; 337 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 338 xferq->flag &= ~0xff; 339 xferq->flag |= fwe->stream_ch & 0xff; 340 /* register fwe_input handler */ 341 xferq->sc = (caddr_t) fwe; 342 xferq->hand = fwe_as_input; 343 xferq->bnchunk = rx_queue_len; 344 xferq->bnpacket = 1; 345 xferq->psize = MCLBYTES; 346 xferq->queued = 0; 347 xferq->buf = NULL; 348 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 349 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 350 M_FWE, M_WAITOK); 351 if (xferq->bulkxfer == NULL) { 352 printf("if_fwe: malloc failed\n"); 353 return; 354 } 355 STAILQ_INIT(&xferq->stvalid); 356 STAILQ_INIT(&xferq->stfree); 357 STAILQ_INIT(&xferq->stdma); 358 xferq->stproc = NULL; 359 for (i = 0; i < xferq->bnchunk; i ++) { 360 m = m_getcl(M_WAIT, MT_DATA, M_PKTHDR); 361 xferq->bulkxfer[i].mbuf = m; 362 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 363 STAILQ_INSERT_TAIL(&xferq->stfree, 364 &xferq->bulkxfer[i], link); 365 } 366 STAILQ_INIT(&fwe->xferlist); 367 for (i = 0; i < TX_MAX_QUEUE; i++) { 368 xfer = fw_xfer_alloc(M_FWE); 369 if (xfer == NULL) 370 break; 371 xfer->send.spd = tx_speed; 372 xfer->fc = fwe->fd.fc; 373 xfer->sc = (caddr_t)fwe; 374 xfer->hand = fwe_output_callback; 375 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 376 } 377 } else 378 xferq = fc->ir[fwe->dma_ch]; 379 380 381 /* start dma */ 382 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 383 fc->irx_enable(fc, fwe->dma_ch); 384 385#if defined(__FreeBSD__) 386 ifp->if_drv_flags |= IFF_DRV_RUNNING; 387 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 388#else 389 ifp->if_flags |= IFF_RUNNING; 390 ifp->if_flags &= ~IFF_OACTIVE; 391#endif 392 393#if 0 394 /* attempt to start output */ 395 fwe_start(ifp); 396#endif 397} 398 399 400static int 401fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 402{ 403 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 404 struct ifstat *ifs = NULL; 405 int s, error, len; 406 407 switch (cmd) { 408 case SIOCSIFFLAGS: 409 s = splimp(); 410 if (ifp->if_flags & IFF_UP) { 411#if defined(__FreeBSD__) 412 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 413#else 414 if (!(ifp->if_flags & IFF_RUNNING)) 415#endif 416 fwe_init(&fwe->eth_softc); 417 } else { 418#if defined(__FreeBSD__) 419 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 420#else 421 if (ifp->if_flags & IFF_RUNNING) 422#endif 423 fwe_stop(fwe); 424 } 425 /* XXX keep promiscoud mode */ 426 ifp->if_flags |= IFF_PROMISC; 427 splx(s); 428 break; 429 case SIOCADDMULTI: 430 case SIOCDELMULTI: 431 break; 432 433 case SIOCGIFSTATUS: 434 s = splimp(); 435 ifs = (struct ifstat *)data; 436 len = strlen(ifs->ascii); 437 if (len < sizeof(ifs->ascii)) 438 snprintf(ifs->ascii + len, 439 sizeof(ifs->ascii) - len, 440 "\tch %d dma %d\n", 441 fwe->stream_ch, fwe->dma_ch); 442 splx(s); 443 break; 444 case SIOCSIFCAP: 445#ifdef DEVICE_POLLING 446 { 447 struct ifreq *ifr = (struct ifreq *) data; 448 struct firewire_comm *fc = fc = fwe->fd.fc; 449 450 if (ifr->ifr_reqcap & IFCAP_POLLING && 451 !(ifp->if_capenable & IFCAP_POLLING)) { 452 error = ether_poll_register(fwe_poll, ifp); 453 if (error) 454 return(error); 455 /* Disable interrupts */ 456 fc->set_intr(fc, 0); 457 ifp->if_capenable |= IFCAP_POLLING; 458 return (error); 459 } 460 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 461 ifp->if_capenable & IFCAP_POLLING) { 462 error = ether_poll_deregister(ifp); 463 /* Enable interrupts. */ 464 fc->set_intr(fc, 1); 465 ifp->if_capenable &= ~IFCAP_POLLING; 466 return (error); 467 } 468 } 469#endif /* DEVICE_POLLING */ 470 break; 471#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 472 default: 473#else 474 case SIOCSIFADDR: 475 case SIOCGIFADDR: 476 case SIOCSIFMTU: 477#endif 478 s = splimp(); 479 error = ether_ioctl(ifp, cmd, data); 480 splx(s); 481 return (error); 482#if defined(__DragonFly__) || __FreeBSD_version < 500000 483 default: 484 return (EINVAL); 485#endif 486 } 487 488 return (0); 489} 490 491static void 492fwe_output_callback(struct fw_xfer *xfer) 493{ 494 struct fwe_softc *fwe; 495 struct ifnet *ifp; 496 int s; 497 498 fwe = (struct fwe_softc *)xfer->sc; 499 ifp = fwe->eth_softc.ifp; 500 /* XXX error check */ 501 FWEDEBUG(ifp, "resp = %d\n", xfer->resp); 502 if (xfer->resp != 0) 503 ifp->if_oerrors ++; 504 505 m_freem(xfer->mbuf); 506 fw_xfer_unload(xfer); 507 508 s = splimp(); 509 FWE_LOCK(fwe); 510 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 511 FWE_UNLOCK(fwe); 512 splx(s); 513 514 /* for queue full */ 515 if (ifp->if_snd.ifq_head != NULL) 516 fwe_start(ifp); 517} 518 519static void 520fwe_start(struct ifnet *ifp) 521{ 522 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 523 int s; 524 525 FWEDEBUG(ifp, "starting\n"); 526 527 if (fwe->dma_ch < 0) { 528 struct mbuf *m = NULL; 529 530 FWEDEBUG(ifp, "not ready\n"); 531 532 s = splimp(); 533 do { 534 IF_DEQUEUE(&ifp->if_snd, m); 535 if (m != NULL) 536 m_freem(m); 537 ifp->if_oerrors ++; 538 } while (m != NULL); 539 splx(s); 540 541 return; 542 } 543 544 s = splimp(); 545#if defined(__FreeBSD__) 546 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 547#else 548 ifp->if_flags |= IFF_OACTIVE; 549#endif 550 551 if (ifp->if_snd.ifq_len != 0) 552 fwe_as_output(fwe, ifp); 553 554#if defined(__FreeBSD__) 555 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 556#else 557 ifp->if_flags &= ~IFF_OACTIVE; 558#endif 559 splx(s); 560} 561 562#define HDR_LEN 4 563#ifndef ETHER_ALIGN 564#define ETHER_ALIGN 2 565#endif 566/* Async. stream output */ 567static void 568fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp) 569{ 570 struct mbuf *m; 571 struct fw_xfer *xfer; 572 struct fw_xferq *xferq; 573 struct fw_pkt *fp; 574 int i = 0; 575 576 xfer = NULL; 577 xferq = fwe->fd.fc->atq; 578 while ((xferq->queued < xferq->maxq - 1) && 579 (ifp->if_snd.ifq_head != NULL)) { 580 FWE_LOCK(fwe); 581 xfer = STAILQ_FIRST(&fwe->xferlist); 582 if (xfer == NULL) { 583#if 0 584 printf("if_fwe: lack of xfer\n"); 585#endif 586 FWE_UNLOCK(fwe); 587 break; 588 } 589 STAILQ_REMOVE_HEAD(&fwe->xferlist, link); 590 FWE_UNLOCK(fwe); 591 592 IF_DEQUEUE(&ifp->if_snd, m); 593 if (m == NULL) { 594 FWE_LOCK(fwe); 595 STAILQ_INSERT_HEAD(&fwe->xferlist, xfer, link); 596 FWE_UNLOCK(fwe); 597 break; 598 } 599#if defined(__DragonFly__) || __FreeBSD_version < 500000 600 if (ifp->if_bpf != NULL) 601 bpf_mtap(ifp, m); 602#else 603 BPF_MTAP(ifp, m); 604#endif 605 606 /* keep ip packet alignment for alpha */ 607 M_PREPEND(m, ETHER_ALIGN, M_DONTWAIT); 608 fp = &xfer->send.hdr; 609 *(uint32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr; 610 fp->mode.stream.len = m->m_pkthdr.len; 611 xfer->mbuf = m; 612 xfer->send.pay_len = m->m_pkthdr.len; 613 614 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) { 615 /* error */ 616 ifp->if_oerrors ++; 617 /* XXX set error code */ 618 fwe_output_callback(xfer); 619 } else { 620 ifp->if_opackets ++; 621 i++; 622 } 623 } 624#if 0 625 if (i > 1) 626 printf("%d queued\n", i); 627#endif 628 if (i > 0) 629 xferq->start(fwe->fd.fc); 630} 631 632/* Async. stream output */ 633static void 634fwe_as_input(struct fw_xferq *xferq) 635{ 636 struct mbuf *m, *m0; 637 struct ifnet *ifp; 638 struct fwe_softc *fwe; 639 struct fw_bulkxfer *sxfer; 640 struct fw_pkt *fp; 641 u_char *c; 642#if defined(__DragonFly__) || __FreeBSD_version < 500000 643 struct ether_header *eh; 644#endif 645 646 fwe = (struct fwe_softc *)xferq->sc; 647 ifp = fwe->eth_softc.ifp; 648 649 /* We do not need a lock here because the bottom half is serialized */ 650 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 651 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 652 fp = mtod(sxfer->mbuf, struct fw_pkt *); 653 if (fwe->fd.fc->irx_post != NULL) 654 fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld); 655 m = sxfer->mbuf; 656 657 /* insert new rbuf */ 658 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 659 if (m0 != NULL) { 660 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 661 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 662 } else 663 printf("%s: m_getcl failed\n", __FUNCTION__); 664 665 if (sxfer->resp != 0 || fp->mode.stream.len < 666 ETHER_ALIGN + sizeof(struct ether_header)) { 667 m_freem(m); 668 ifp->if_ierrors ++; 669 continue; 670 } 671 672 m->m_data += HDR_LEN + ETHER_ALIGN; 673 c = mtod(m, u_char *); 674#if defined(__DragonFly__) || __FreeBSD_version < 500000 675 eh = (struct ether_header *)c; 676 m->m_data += sizeof(struct ether_header); 677 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN 678 - sizeof(struct ether_header); 679#else 680 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN; 681#endif 682 m->m_pkthdr.rcvif = ifp; 683#if 0 684 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n" 685 "%02x %02x %02x %02x %02x %02x\n" 686 "%02x %02x %02x %02x\n" 687 "%02x %02x %02x %02x\n" 688 "%02x %02x %02x %02x\n" 689 "%02x %02x %02x %02x\n", 690 c[0], c[1], c[2], c[3], c[4], c[5], 691 c[6], c[7], c[8], c[9], c[10], c[11], 692 c[12], c[13], c[14], c[15], 693 c[16], c[17], c[18], c[19], 694 c[20], c[21], c[22], c[23], 695 c[20], c[21], c[22], c[23] 696 ); 697#endif 698#if defined(__DragonFly__) || __FreeBSD_version < 500000 699 ether_input(ifp, eh, m); 700#else 701 (*ifp->if_input)(ifp, m); 702#endif 703 ifp->if_ipackets ++; 704 } 705 if (STAILQ_FIRST(&xferq->stfree) != NULL) 706 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch); 707} 708 709 710static devclass_t fwe_devclass; 711 712static device_method_t fwe_methods[] = { 713 /* device interface */ 714 DEVMETHOD(device_identify, fwe_identify), 715 DEVMETHOD(device_probe, fwe_probe), 716 DEVMETHOD(device_attach, fwe_attach), 717 DEVMETHOD(device_detach, fwe_detach), 718 { 0, 0 } 719}; 720 721static driver_t fwe_driver = { 722 "fwe", 723 fwe_methods, 724 sizeof(struct fwe_softc), 725}; 726 727 728#ifdef __DragonFly__ 729DECLARE_DUMMY_MODULE(fwe); 730#endif 731DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0); 732MODULE_VERSION(fwe, 1); 733MODULE_DEPEND(fwe, firewire, 1, 1, 1); 734