if_fwe.c revision 270856
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 270856 2014-08-30 19:55:54Z glebius $ 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_var.h> 58#include <net/if_arp.h> 59#include <net/if_types.h> 60#ifdef __DragonFly__ 61#include <net/vlan/if_vlan_var.h> 62#include <bus/firewire/firewire.h> 63#include <bus/firewire/firewirereg.h> 64#include "if_fwevar.h" 65#else 66#include <net/if_vlan_var.h> 67 68#include <dev/firewire/firewire.h> 69#include <dev/firewire/firewirereg.h> 70#include <dev/firewire/if_fwevar.h> 71#endif 72 73#define FWEDEBUG if (fwedebug) if_printf 74#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 75 76/* network interface */ 77static void fwe_start (struct ifnet *); 78static int fwe_ioctl (struct ifnet *, u_long, caddr_t); 79static void fwe_init (void *); 80 81static void fwe_output_callback (struct fw_xfer *); 82static void fwe_as_output (struct fwe_softc *, struct ifnet *); 83static void fwe_as_input (struct fw_xferq *); 84 85static int fwedebug = 0; 86static int stream_ch = 1; 87static int tx_speed = 2; 88static int rx_queue_len = FWMAXQUEUE; 89 90static MALLOC_DEFINE(M_FWE, "if_fwe", "Ethernet over FireWire interface"); 91SYSCTL_INT(_debug, OID_AUTO, if_fwe_debug, CTLFLAG_RWTUN, &fwedebug, 0, ""); 92SYSCTL_DECL(_hw_firewire); 93static SYSCTL_NODE(_hw_firewire, OID_AUTO, fwe, CTLFLAG_RD, 0, 94 "Ethernet emulation subsystem"); 95SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, stream_ch, CTLFLAG_RWTUN, &stream_ch, 0, 96 "Stream channel to use"); 97SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, tx_speed, CTLFLAG_RWTUN, &tx_speed, 0, 98 "Transmission speed"); 99SYSCTL_INT(_hw_firewire_fwe, OID_AUTO, rx_queue_len, CTLFLAG_RWTUN, &rx_queue_len, 100 0, "Length of the receive queue"); 101 102#ifdef DEVICE_POLLING 103static poll_handler_t fwe_poll; 104 105static int 106fwe_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 107{ 108 struct fwe_softc *fwe; 109 struct firewire_comm *fc; 110 111 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 112 return (0); 113 114 fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 115 fc = fwe->fd.fc; 116 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 117 return (0); 118} 119#endif /* DEVICE_POLLING */ 120 121static void 122fwe_identify(driver_t *driver, device_t parent) 123{ 124 BUS_ADD_CHILD(parent, 0, "fwe", device_get_unit(parent)); 125} 126 127static int 128fwe_probe(device_t dev) 129{ 130 device_t pa; 131 132 pa = device_get_parent(dev); 133 if(device_get_unit(dev) != device_get_unit(pa)){ 134 return(ENXIO); 135 } 136 137 device_set_desc(dev, "Ethernet over FireWire"); 138 return (0); 139} 140 141static int 142fwe_attach(device_t dev) 143{ 144 struct fwe_softc *fwe; 145 struct ifnet *ifp; 146 int unit, s; 147#if defined(__DragonFly__) || __FreeBSD_version < 500000 148 u_char *eaddr; 149#else 150 u_char eaddr[6]; 151#endif 152 struct fw_eui64 *eui; 153 154 fwe = ((struct fwe_softc *)device_get_softc(dev)); 155 unit = device_get_unit(dev); 156 157 bzero(fwe, sizeof(struct fwe_softc)); 158 mtx_init(&fwe->mtx, "fwe", NULL, MTX_DEF); 159 /* XXX */ 160 fwe->stream_ch = stream_ch; 161 fwe->dma_ch = -1; 162 163 fwe->fd.fc = device_get_ivars(dev); 164 if (tx_speed < 0) 165 tx_speed = fwe->fd.fc->speed; 166 167 fwe->fd.dev = dev; 168 fwe->fd.post_explore = NULL; 169 fwe->eth_softc.fwe = fwe; 170 171 fwe->pkt_hdr.mode.stream.tcode = FWTCODE_STREAM; 172 fwe->pkt_hdr.mode.stream.sy = 0; 173 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 174 175 /* generate fake MAC address: first and last 3bytes from eui64 */ 176#define LOCAL (0x02) 177#define GROUP (0x01) 178#if defined(__DragonFly__) || __FreeBSD_version < 500000 179 eaddr = &IFP2ENADDR(fwe->eth_softc.ifp)[0]; 180#endif 181 182 183 eui = &fwe->fd.fc->eui; 184 eaddr[0] = (FW_EUI64_BYTE(eui, 0) | LOCAL) & ~GROUP; 185 eaddr[1] = FW_EUI64_BYTE(eui, 1); 186 eaddr[2] = FW_EUI64_BYTE(eui, 2); 187 eaddr[3] = FW_EUI64_BYTE(eui, 5); 188 eaddr[4] = FW_EUI64_BYTE(eui, 6); 189 eaddr[5] = FW_EUI64_BYTE(eui, 7); 190 printf("if_fwe%d: Fake Ethernet address: " 191 "%02x:%02x:%02x:%02x:%02x:%02x\n", unit, 192 eaddr[0], eaddr[1], eaddr[2], eaddr[3], eaddr[4], eaddr[5]); 193 194 /* fill the rest and attach interface */ 195 ifp = fwe->eth_softc.ifp = if_alloc(IFT_ETHER); 196 if (ifp == NULL) { 197 device_printf(dev, "can not if_alloc()\n"); 198 return (ENOSPC); 199 } 200 ifp->if_softc = &fwe->eth_softc; 201 202#if __FreeBSD_version >= 501113 || defined(__DragonFly__) 203 if_initname(ifp, device_get_name(dev), unit); 204#else 205 ifp->if_unit = unit; 206 ifp->if_name = "fwe"; 207#endif 208 ifp->if_init = fwe_init; 209#if defined(__DragonFly__) || __FreeBSD_version < 500000 210 ifp->if_output = ether_output; 211#endif 212 ifp->if_start = fwe_start; 213 ifp->if_ioctl = fwe_ioctl; 214 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 215 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 216 217 s = splimp(); 218#if defined(__DragonFly__) || __FreeBSD_version < 500000 219 ether_ifattach(ifp, 1); 220#else 221 ether_ifattach(ifp, eaddr); 222#endif 223 splx(s); 224 225 /* Tell the upper layer(s) we support long frames. */ 226 ifp->if_hdrlen = sizeof(struct ether_vlan_header); 227#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 228 ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_POLLING; 229 ifp->if_capenable |= IFCAP_VLAN_MTU; 230#endif 231 232 233 FWEDEBUG(ifp, "interface created\n"); 234 return 0; 235} 236 237static void 238fwe_stop(struct fwe_softc *fwe) 239{ 240 struct firewire_comm *fc; 241 struct fw_xferq *xferq; 242 struct ifnet *ifp = fwe->eth_softc.ifp; 243 struct fw_xfer *xfer, *next; 244 int i; 245 246 fc = fwe->fd.fc; 247 248 if (fwe->dma_ch >= 0) { 249 xferq = fc->ir[fwe->dma_ch]; 250 251 if (xferq->flag & FWXFERQ_RUNNING) 252 fc->irx_disable(fc, fwe->dma_ch); 253 xferq->flag &= 254 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 255 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 256 xferq->hand = NULL; 257 258 for (i = 0; i < xferq->bnchunk; i ++) 259 m_freem(xferq->bulkxfer[i].mbuf); 260 free(xferq->bulkxfer, M_FWE); 261 262 for (xfer = STAILQ_FIRST(&fwe->xferlist); xfer != NULL; 263 xfer = next) { 264 next = STAILQ_NEXT(xfer, link); 265 fw_xfer_free(xfer); 266 } 267 STAILQ_INIT(&fwe->xferlist); 268 269 xferq->bulkxfer = NULL; 270 fwe->dma_ch = -1; 271 } 272 273#if defined(__FreeBSD__) 274 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 275#else 276 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 277#endif 278} 279 280static int 281fwe_detach(device_t dev) 282{ 283 struct fwe_softc *fwe; 284 struct ifnet *ifp; 285 int s; 286 287 fwe = device_get_softc(dev); 288 ifp = fwe->eth_softc.ifp; 289 290#ifdef DEVICE_POLLING 291 if (ifp->if_capenable & IFCAP_POLLING) 292 ether_poll_deregister(ifp); 293#endif 294 s = splimp(); 295 296 fwe_stop(fwe); 297#if defined(__DragonFly__) || __FreeBSD_version < 500000 298 ether_ifdetach(ifp, 1); 299#else 300 ether_ifdetach(ifp); 301 if_free(ifp); 302#endif 303 304 splx(s); 305 mtx_destroy(&fwe->mtx); 306 return 0; 307} 308 309static void 310fwe_init(void *arg) 311{ 312 struct fwe_softc *fwe = ((struct fwe_eth_softc *)arg)->fwe; 313 struct firewire_comm *fc; 314 struct ifnet *ifp = fwe->eth_softc.ifp; 315 struct fw_xferq *xferq; 316 struct fw_xfer *xfer; 317 struct mbuf *m; 318 int i; 319 320 FWEDEBUG(ifp, "initializing\n"); 321 322 /* XXX keep promiscoud mode */ 323 ifp->if_flags |= IFF_PROMISC; 324 325 fc = fwe->fd.fc; 326 if (fwe->dma_ch < 0) { 327 fwe->dma_ch = fw_open_isodma(fc, /* tx */0); 328 if (fwe->dma_ch < 0) 329 return; 330 xferq = fc->ir[fwe->dma_ch]; 331 xferq->flag |= FWXFERQ_EXTBUF | 332 FWXFERQ_HANDLER | FWXFERQ_STREAM; 333 fwe->stream_ch = stream_ch; 334 fwe->pkt_hdr.mode.stream.chtag = fwe->stream_ch; 335 xferq->flag &= ~0xff; 336 xferq->flag |= fwe->stream_ch & 0xff; 337 /* register fwe_input handler */ 338 xferq->sc = (caddr_t) fwe; 339 xferq->hand = fwe_as_input; 340 xferq->bnchunk = rx_queue_len; 341 xferq->bnpacket = 1; 342 xferq->psize = MCLBYTES; 343 xferq->queued = 0; 344 xferq->buf = NULL; 345 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 346 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 347 M_FWE, M_WAITOK); 348 if (xferq->bulkxfer == NULL) { 349 printf("if_fwe: malloc failed\n"); 350 return; 351 } 352 STAILQ_INIT(&xferq->stvalid); 353 STAILQ_INIT(&xferq->stfree); 354 STAILQ_INIT(&xferq->stdma); 355 xferq->stproc = NULL; 356 for (i = 0; i < xferq->bnchunk; i ++) { 357 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 358 xferq->bulkxfer[i].mbuf = m; 359 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 360 STAILQ_INSERT_TAIL(&xferq->stfree, 361 &xferq->bulkxfer[i], link); 362 } 363 STAILQ_INIT(&fwe->xferlist); 364 for (i = 0; i < TX_MAX_QUEUE; i++) { 365 xfer = fw_xfer_alloc(M_FWE); 366 if (xfer == NULL) 367 break; 368 xfer->send.spd = tx_speed; 369 xfer->fc = fwe->fd.fc; 370 xfer->sc = (caddr_t)fwe; 371 xfer->hand = fwe_output_callback; 372 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 373 } 374 } else 375 xferq = fc->ir[fwe->dma_ch]; 376 377 378 /* start dma */ 379 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 380 fc->irx_enable(fc, fwe->dma_ch); 381 382#if defined(__FreeBSD__) 383 ifp->if_drv_flags |= IFF_DRV_RUNNING; 384 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 385#else 386 ifp->if_flags |= IFF_RUNNING; 387 ifp->if_flags &= ~IFF_OACTIVE; 388#endif 389 390#if 0 391 /* attempt to start output */ 392 fwe_start(ifp); 393#endif 394} 395 396 397static int 398fwe_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 399{ 400 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 401 struct ifstat *ifs = NULL; 402 int s, error; 403 404 switch (cmd) { 405 case SIOCSIFFLAGS: 406 s = splimp(); 407 if (ifp->if_flags & IFF_UP) { 408#if defined(__FreeBSD__) 409 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 410#else 411 if (!(ifp->if_flags & IFF_RUNNING)) 412#endif 413 fwe_init(&fwe->eth_softc); 414 } else { 415#if defined(__FreeBSD__) 416 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 417#else 418 if (ifp->if_flags & IFF_RUNNING) 419#endif 420 fwe_stop(fwe); 421 } 422 /* XXX keep promiscoud mode */ 423 ifp->if_flags |= IFF_PROMISC; 424 splx(s); 425 break; 426 case SIOCADDMULTI: 427 case SIOCDELMULTI: 428 break; 429 430 case SIOCGIFSTATUS: 431 s = splimp(); 432 ifs = (struct ifstat *)data; 433 snprintf(ifs->ascii, sizeof(ifs->ascii), 434 "\tch %d dma %d\n", fwe->stream_ch, fwe->dma_ch); 435 splx(s); 436 break; 437 case SIOCSIFCAP: 438#ifdef DEVICE_POLLING 439 { 440 struct ifreq *ifr = (struct ifreq *) data; 441 struct firewire_comm *fc = fwe->fd.fc; 442 443 if (ifr->ifr_reqcap & IFCAP_POLLING && 444 !(ifp->if_capenable & IFCAP_POLLING)) { 445 error = ether_poll_register(fwe_poll, ifp); 446 if (error) 447 return(error); 448 /* Disable interrupts */ 449 fc->set_intr(fc, 0); 450 ifp->if_capenable |= IFCAP_POLLING; 451 ifp->if_capenable |= IFCAP_POLLING_NOCOUNT; 452 return (error); 453 } 454 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 455 ifp->if_capenable & IFCAP_POLLING) { 456 error = ether_poll_deregister(ifp); 457 /* Enable interrupts. */ 458 fc->set_intr(fc, 1); 459 ifp->if_capenable &= ~IFCAP_POLLING; 460 ifp->if_capenable &= ~IFCAP_POLLING_NOCOUNT; 461 return (error); 462 } 463 } 464#endif /* DEVICE_POLLING */ 465 break; 466#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 467 default: 468#else 469 case SIOCSIFADDR: 470 case SIOCGIFADDR: 471 case SIOCSIFMTU: 472#endif 473 s = splimp(); 474 error = ether_ioctl(ifp, cmd, data); 475 splx(s); 476 return (error); 477#if defined(__DragonFly__) || __FreeBSD_version < 500000 478 default: 479 return (EINVAL); 480#endif 481 } 482 483 return (0); 484} 485 486static void 487fwe_output_callback(struct fw_xfer *xfer) 488{ 489 struct fwe_softc *fwe; 490 struct ifnet *ifp; 491 int s; 492 493 fwe = (struct fwe_softc *)xfer->sc; 494 ifp = fwe->eth_softc.ifp; 495 /* XXX error check */ 496 FWEDEBUG(ifp, "resp = %d\n", xfer->resp); 497 if (xfer->resp != 0) 498 ifp->if_oerrors ++; 499 500 m_freem(xfer->mbuf); 501 fw_xfer_unload(xfer); 502 503 s = splimp(); 504 FWE_LOCK(fwe); 505 STAILQ_INSERT_TAIL(&fwe->xferlist, xfer, link); 506 FWE_UNLOCK(fwe); 507 splx(s); 508 509 /* for queue full */ 510 if (ifp->if_snd.ifq_head != NULL) 511 fwe_start(ifp); 512} 513 514static void 515fwe_start(struct ifnet *ifp) 516{ 517 struct fwe_softc *fwe = ((struct fwe_eth_softc *)ifp->if_softc)->fwe; 518 int s; 519 520 FWEDEBUG(ifp, "starting\n"); 521 522 if (fwe->dma_ch < 0) { 523 struct mbuf *m = NULL; 524 525 FWEDEBUG(ifp, "not ready\n"); 526 527 s = splimp(); 528 do { 529 IF_DEQUEUE(&ifp->if_snd, m); 530 if (m != NULL) 531 m_freem(m); 532 ifp->if_oerrors ++; 533 } while (m != NULL); 534 splx(s); 535 536 return; 537 } 538 539 s = splimp(); 540#if defined(__FreeBSD__) 541 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 542#else 543 ifp->if_flags |= IFF_OACTIVE; 544#endif 545 546 if (ifp->if_snd.ifq_len != 0) 547 fwe_as_output(fwe, ifp); 548 549#if defined(__FreeBSD__) 550 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 551#else 552 ifp->if_flags &= ~IFF_OACTIVE; 553#endif 554 splx(s); 555} 556 557#define HDR_LEN 4 558#ifndef ETHER_ALIGN 559#define ETHER_ALIGN 2 560#endif 561/* Async. stream output */ 562static void 563fwe_as_output(struct fwe_softc *fwe, struct ifnet *ifp) 564{ 565 struct mbuf *m; 566 struct fw_xfer *xfer; 567 struct fw_xferq *xferq; 568 struct fw_pkt *fp; 569 int i = 0; 570 571 xfer = NULL; 572 xferq = fwe->fd.fc->atq; 573 while ((xferq->queued < xferq->maxq - 1) && 574 (ifp->if_snd.ifq_head != NULL)) { 575 FWE_LOCK(fwe); 576 xfer = STAILQ_FIRST(&fwe->xferlist); 577 if (xfer == NULL) { 578#if 0 579 printf("if_fwe: lack of xfer\n"); 580#endif 581 FWE_UNLOCK(fwe); 582 break; 583 } 584 STAILQ_REMOVE_HEAD(&fwe->xferlist, link); 585 FWE_UNLOCK(fwe); 586 587 IF_DEQUEUE(&ifp->if_snd, m); 588 if (m == NULL) { 589 FWE_LOCK(fwe); 590 STAILQ_INSERT_HEAD(&fwe->xferlist, xfer, link); 591 FWE_UNLOCK(fwe); 592 break; 593 } 594#if defined(__DragonFly__) || __FreeBSD_version < 500000 595 if (ifp->if_bpf != NULL) 596 bpf_mtap(ifp, m); 597#else 598 BPF_MTAP(ifp, m); 599#endif 600 601 /* keep ip packet alignment for alpha */ 602 M_PREPEND(m, ETHER_ALIGN, M_NOWAIT); 603 fp = &xfer->send.hdr; 604 *(uint32_t *)&xfer->send.hdr = *(int32_t *)&fwe->pkt_hdr; 605 fp->mode.stream.len = m->m_pkthdr.len; 606 xfer->mbuf = m; 607 xfer->send.pay_len = m->m_pkthdr.len; 608 609 if (fw_asyreq(fwe->fd.fc, -1, xfer) != 0) { 610 /* error */ 611 ifp->if_oerrors ++; 612 /* XXX set error code */ 613 fwe_output_callback(xfer); 614 } else { 615 ifp->if_opackets ++; 616 i++; 617 } 618 } 619#if 0 620 if (i > 1) 621 printf("%d queued\n", i); 622#endif 623 if (i > 0) 624 xferq->start(fwe->fd.fc); 625} 626 627/* Async. stream output */ 628static void 629fwe_as_input(struct fw_xferq *xferq) 630{ 631 struct mbuf *m, *m0; 632 struct ifnet *ifp; 633 struct fwe_softc *fwe; 634 struct fw_bulkxfer *sxfer; 635 struct fw_pkt *fp; 636 u_char *c; 637#if defined(__DragonFly__) || __FreeBSD_version < 500000 638 struct ether_header *eh; 639#endif 640 641 fwe = (struct fwe_softc *)xferq->sc; 642 ifp = fwe->eth_softc.ifp; 643 644 /* We do not need a lock here because the bottom half is serialized */ 645 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 646 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 647 fp = mtod(sxfer->mbuf, struct fw_pkt *); 648 if (fwe->fd.fc->irx_post != NULL) 649 fwe->fd.fc->irx_post(fwe->fd.fc, fp->mode.ld); 650 m = sxfer->mbuf; 651 652 /* insert new rbuf */ 653 sxfer->mbuf = m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 654 if (m0 != NULL) { 655 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 656 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 657 } else 658 printf("%s: m_getcl failed\n", __FUNCTION__); 659 660 if (sxfer->resp != 0 || fp->mode.stream.len < 661 ETHER_ALIGN + sizeof(struct ether_header)) { 662 m_freem(m); 663 ifp->if_ierrors ++; 664 continue; 665 } 666 667 m->m_data += HDR_LEN + ETHER_ALIGN; 668 c = mtod(m, u_char *); 669#if defined(__DragonFly__) || __FreeBSD_version < 500000 670 eh = (struct ether_header *)c; 671 m->m_data += sizeof(struct ether_header); 672 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN 673 - sizeof(struct ether_header); 674#else 675 m->m_len = m->m_pkthdr.len = fp->mode.stream.len - ETHER_ALIGN; 676#endif 677 m->m_pkthdr.rcvif = ifp; 678#if 0 679 FWEDEBUG(ifp, "%02x %02x %02x %02x %02x %02x\n" 680 "%02x %02x %02x %02x %02x %02x\n" 681 "%02x %02x %02x %02x\n" 682 "%02x %02x %02x %02x\n" 683 "%02x %02x %02x %02x\n" 684 "%02x %02x %02x %02x\n", 685 c[0], c[1], c[2], c[3], c[4], c[5], 686 c[6], c[7], c[8], c[9], c[10], c[11], 687 c[12], c[13], c[14], c[15], 688 c[16], c[17], c[18], c[19], 689 c[20], c[21], c[22], c[23], 690 c[20], c[21], c[22], c[23] 691 ); 692#endif 693#if defined(__DragonFly__) || __FreeBSD_version < 500000 694 ether_input(ifp, eh, m); 695#else 696 (*ifp->if_input)(ifp, m); 697#endif 698 ifp->if_ipackets ++; 699 } 700 if (STAILQ_FIRST(&xferq->stfree) != NULL) 701 fwe->fd.fc->irx_enable(fwe->fd.fc, fwe->dma_ch); 702} 703 704 705static devclass_t fwe_devclass; 706 707static device_method_t fwe_methods[] = { 708 /* device interface */ 709 DEVMETHOD(device_identify, fwe_identify), 710 DEVMETHOD(device_probe, fwe_probe), 711 DEVMETHOD(device_attach, fwe_attach), 712 DEVMETHOD(device_detach, fwe_detach), 713 { 0, 0 } 714}; 715 716static driver_t fwe_driver = { 717 "fwe", 718 fwe_methods, 719 sizeof(struct fwe_softc), 720}; 721 722 723#ifdef __DragonFly__ 724DECLARE_DUMMY_MODULE(fwe); 725#endif 726DRIVER_MODULE(fwe, firewire, fwe_driver, fwe_devclass, 0, 0); 727MODULE_VERSION(fwe, 1); 728MODULE_DEPEND(fwe, firewire, 1, 1, 1); 729