if_fwip.c revision 267992
1/*- 2 * Copyright (c) 2004 3 * Doug Rabson 4 * Copyright (c) 2002-2003 5 * Hidetoshi Shimokawa. 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 * 18 * This product includes software developed by Hidetoshi Shimokawa. 19 * 20 * 4. Neither the name of the author nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * $FreeBSD: head/sys/dev/firewire/if_fwip.c 267992 2014-06-28 03:56:17Z hselasky $ 37 */ 38 39#ifdef HAVE_KERNEL_OPTION_HEADERS 40#include "opt_device_polling.h" 41#include "opt_inet.h" 42#endif 43 44#include <sys/param.h> 45#include <sys/kernel.h> 46#include <sys/malloc.h> 47#include <sys/mbuf.h> 48#include <sys/socket.h> 49#include <sys/sockio.h> 50#include <sys/sysctl.h> 51#include <sys/systm.h> 52#include <sys/taskqueue.h> 53#include <sys/module.h> 54#include <sys/bus.h> 55#include <machine/bus.h> 56 57#include <net/bpf.h> 58#include <net/if.h> 59#include <net/if_var.h> 60#include <net/firewire.h> 61#include <net/if_arp.h> 62#include <net/if_types.h> 63#ifdef __DragonFly__ 64#include <bus/firewire/firewire.h> 65#include <bus/firewire/firewirereg.h> 66#include "if_fwipvar.h" 67#else 68#include <dev/firewire/firewire.h> 69#include <dev/firewire/firewirereg.h> 70#include <dev/firewire/iec13213.h> 71#include <dev/firewire/if_fwipvar.h> 72#endif 73 74/* 75 * We really need a mechanism for allocating regions in the FIFO 76 * address space. We pick a address in the OHCI controller's 'middle' 77 * address space. This means that the controller will automatically 78 * send responses for us, which is fine since we don't have any 79 * important information to put in the response anyway. 80 */ 81#define INET_FIFO 0xfffe00000000LL 82 83#define FWIPDEBUG if (fwipdebug) if_printf 84#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 85 86/* network interface */ 87static void fwip_start (struct ifnet *); 88static int fwip_ioctl (struct ifnet *, u_long, caddr_t); 89static void fwip_init (void *); 90 91static void fwip_post_busreset (void *); 92static void fwip_output_callback (struct fw_xfer *); 93static void fwip_async_output (struct fwip_softc *, struct ifnet *); 94static void fwip_start_send (void *, int); 95static void fwip_stream_input (struct fw_xferq *); 96static void fwip_unicast_input(struct fw_xfer *); 97 98static int fwipdebug = 0; 99static int broadcast_channel = 0xc0 | 0x1f; /* tag | channel(XXX) */ 100static int tx_speed = 2; 101static int rx_queue_len = FWMAXQUEUE; 102 103static MALLOC_DEFINE(M_FWIP, "if_fwip", "IP over FireWire interface"); 104SYSCTL_INT(_debug, OID_AUTO, if_fwip_debug, CTLFLAG_RW, &fwipdebug, 0, ""); 105SYSCTL_DECL(_hw_firewire); 106static SYSCTL_NODE(_hw_firewire, OID_AUTO, fwip, CTLFLAG_RD, 0, 107 "Firewire ip subsystem"); 108SYSCTL_INT(_hw_firewire_fwip, OID_AUTO, rx_queue_len, CTLFLAG_RWTUN, &rx_queue_len, 109 0, "Length of the receive queue"); 110 111#ifdef DEVICE_POLLING 112static poll_handler_t fwip_poll; 113 114static int 115fwip_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 116{ 117 struct fwip_softc *fwip; 118 struct firewire_comm *fc; 119 120 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 121 return (0); 122 123 fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 124 fc = fwip->fd.fc; 125 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 126 return (0); 127} 128#endif /* DEVICE_POLLING */ 129 130static void 131fwip_identify(driver_t *driver, device_t parent) 132{ 133 BUS_ADD_CHILD(parent, 0, "fwip", device_get_unit(parent)); 134} 135 136static int 137fwip_probe(device_t dev) 138{ 139 device_t pa; 140 141 pa = device_get_parent(dev); 142 if(device_get_unit(dev) != device_get_unit(pa)){ 143 return(ENXIO); 144 } 145 146 device_set_desc(dev, "IP over FireWire"); 147 return (0); 148} 149 150static int 151fwip_attach(device_t dev) 152{ 153 struct fwip_softc *fwip; 154 struct ifnet *ifp; 155 int unit, s; 156 struct fw_hwaddr *hwaddr; 157 158 fwip = ((struct fwip_softc *)device_get_softc(dev)); 159 unit = device_get_unit(dev); 160 ifp = fwip->fw_softc.fwip_ifp = if_alloc(IFT_IEEE1394); 161 if (ifp == NULL) 162 return (ENOSPC); 163 164 mtx_init(&fwip->mtx, "fwip", NULL, MTX_DEF); 165 /* XXX */ 166 fwip->dma_ch = -1; 167 168 fwip->fd.fc = device_get_ivars(dev); 169 if (tx_speed < 0) 170 tx_speed = fwip->fd.fc->speed; 171 172 fwip->fd.dev = dev; 173 fwip->fd.post_explore = NULL; 174 fwip->fd.post_busreset = fwip_post_busreset; 175 fwip->fw_softc.fwip = fwip; 176 TASK_INIT(&fwip->start_send, 0, fwip_start_send, fwip); 177 178 /* 179 * Encode our hardware the way that arp likes it. 180 */ 181 hwaddr = &IFP2FWC(fwip->fw_softc.fwip_ifp)->fc_hwaddr; 182 hwaddr->sender_unique_ID_hi = htonl(fwip->fd.fc->eui.hi); 183 hwaddr->sender_unique_ID_lo = htonl(fwip->fd.fc->eui.lo); 184 hwaddr->sender_max_rec = fwip->fd.fc->maxrec; 185 hwaddr->sspd = fwip->fd.fc->speed; 186 hwaddr->sender_unicast_FIFO_hi = htons((uint16_t)(INET_FIFO >> 32)); 187 hwaddr->sender_unicast_FIFO_lo = htonl((uint32_t)INET_FIFO); 188 189 /* fill the rest and attach interface */ 190 ifp->if_softc = &fwip->fw_softc; 191 192#if __FreeBSD_version >= 501113 || defined(__DragonFly__) 193 if_initname(ifp, device_get_name(dev), unit); 194#else 195 ifp->if_unit = unit; 196 ifp->if_name = "fwip"; 197#endif 198 ifp->if_init = fwip_init; 199 ifp->if_start = fwip_start; 200 ifp->if_ioctl = fwip_ioctl; 201 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 202 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 203#ifdef DEVICE_POLLING 204 ifp->if_capabilities |= IFCAP_POLLING; 205#endif 206 207 s = splimp(); 208 firewire_ifattach(ifp, hwaddr); 209 splx(s); 210 211 FWIPDEBUG(ifp, "interface created\n"); 212 return 0; 213} 214 215static void 216fwip_stop(struct fwip_softc *fwip) 217{ 218 struct firewire_comm *fc; 219 struct fw_xferq *xferq; 220 struct ifnet *ifp = fwip->fw_softc.fwip_ifp; 221 struct fw_xfer *xfer, *next; 222 int i; 223 224 fc = fwip->fd.fc; 225 226 if (fwip->dma_ch >= 0) { 227 xferq = fc->ir[fwip->dma_ch]; 228 229 if (xferq->flag & FWXFERQ_RUNNING) 230 fc->irx_disable(fc, fwip->dma_ch); 231 xferq->flag &= 232 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 233 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 234 xferq->hand = NULL; 235 236 for (i = 0; i < xferq->bnchunk; i ++) 237 m_freem(xferq->bulkxfer[i].mbuf); 238 free(xferq->bulkxfer, M_FWIP); 239 240 fw_bindremove(fc, &fwip->fwb); 241 for (xfer = STAILQ_FIRST(&fwip->fwb.xferlist); xfer != NULL; 242 xfer = next) { 243 next = STAILQ_NEXT(xfer, link); 244 fw_xfer_free(xfer); 245 } 246 247 for (xfer = STAILQ_FIRST(&fwip->xferlist); xfer != NULL; 248 xfer = next) { 249 next = STAILQ_NEXT(xfer, link); 250 fw_xfer_free(xfer); 251 } 252 STAILQ_INIT(&fwip->xferlist); 253 254 xferq->bulkxfer = NULL; 255 fwip->dma_ch = -1; 256 } 257 258#if defined(__FreeBSD__) 259 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 260#else 261 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 262#endif 263} 264 265static int 266fwip_detach(device_t dev) 267{ 268 struct fwip_softc *fwip; 269 struct ifnet *ifp; 270 int s; 271 272 fwip = (struct fwip_softc *)device_get_softc(dev); 273 ifp = fwip->fw_softc.fwip_ifp; 274 275#ifdef DEVICE_POLLING 276 if (ifp->if_capenable & IFCAP_POLLING) 277 ether_poll_deregister(ifp); 278#endif 279 280 s = splimp(); 281 282 fwip_stop(fwip); 283 firewire_ifdetach(ifp); 284 if_free(ifp); 285 mtx_destroy(&fwip->mtx); 286 287 splx(s); 288 return 0; 289} 290 291static void 292fwip_init(void *arg) 293{ 294 struct fwip_softc *fwip = ((struct fwip_eth_softc *)arg)->fwip; 295 struct firewire_comm *fc; 296 struct ifnet *ifp = fwip->fw_softc.fwip_ifp; 297 struct fw_xferq *xferq; 298 struct fw_xfer *xfer; 299 struct mbuf *m; 300 int i; 301 302 FWIPDEBUG(ifp, "initializing\n"); 303 304 fc = fwip->fd.fc; 305#define START 0 306 if (fwip->dma_ch < 0) { 307 fwip->dma_ch = fw_open_isodma(fc, /* tx */0); 308 if (fwip->dma_ch < 0) 309 return; 310 xferq = fc->ir[fwip->dma_ch]; 311 xferq->flag |= FWXFERQ_EXTBUF | 312 FWXFERQ_HANDLER | FWXFERQ_STREAM; 313 xferq->flag &= ~0xff; 314 xferq->flag |= broadcast_channel & 0xff; 315 /* register fwip_input handler */ 316 xferq->sc = (caddr_t) fwip; 317 xferq->hand = fwip_stream_input; 318 xferq->bnchunk = rx_queue_len; 319 xferq->bnpacket = 1; 320 xferq->psize = MCLBYTES; 321 xferq->queued = 0; 322 xferq->buf = NULL; 323 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 324 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 325 M_FWIP, M_WAITOK); 326 if (xferq->bulkxfer == NULL) { 327 printf("if_fwip: malloc failed\n"); 328 return; 329 } 330 STAILQ_INIT(&xferq->stvalid); 331 STAILQ_INIT(&xferq->stfree); 332 STAILQ_INIT(&xferq->stdma); 333 xferq->stproc = NULL; 334 for (i = 0; i < xferq->bnchunk; i ++) { 335 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 336 xferq->bulkxfer[i].mbuf = m; 337 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 338 STAILQ_INSERT_TAIL(&xferq->stfree, 339 &xferq->bulkxfer[i], link); 340 } 341 342 fwip->fwb.start = INET_FIFO; 343 fwip->fwb.end = INET_FIFO + 16384; /* S3200 packet size */ 344 345 /* pre-allocate xfer */ 346 STAILQ_INIT(&fwip->fwb.xferlist); 347 for (i = 0; i < rx_queue_len; i ++) { 348 xfer = fw_xfer_alloc(M_FWIP); 349 if (xfer == NULL) 350 break; 351 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 352 xfer->recv.payload = mtod(m, uint32_t *); 353 xfer->recv.pay_len = MCLBYTES; 354 xfer->hand = fwip_unicast_input; 355 xfer->fc = fc; 356 xfer->sc = (caddr_t)fwip; 357 xfer->mbuf = m; 358 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 359 } 360 fw_bindadd(fc, &fwip->fwb); 361 362 STAILQ_INIT(&fwip->xferlist); 363 for (i = 0; i < TX_MAX_QUEUE; i++) { 364 xfer = fw_xfer_alloc(M_FWIP); 365 if (xfer == NULL) 366 break; 367 xfer->send.spd = tx_speed; 368 xfer->fc = fwip->fd.fc; 369 xfer->sc = (caddr_t)fwip; 370 xfer->hand = fwip_output_callback; 371 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 372 } 373 } else 374 xferq = fc->ir[fwip->dma_ch]; 375 376 fwip->last_dest.hi = 0; 377 fwip->last_dest.lo = 0; 378 379 /* start dma */ 380 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 381 fc->irx_enable(fc, fwip->dma_ch); 382 383#if defined(__FreeBSD__) 384 ifp->if_drv_flags |= IFF_DRV_RUNNING; 385 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 386#else 387 ifp->if_flags |= IFF_RUNNING; 388 ifp->if_flags &= ~IFF_OACTIVE; 389#endif 390 391#if 0 392 /* attempt to start output */ 393 fwip_start(ifp); 394#endif 395} 396 397static int 398fwip_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 399{ 400 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 401 int s, error; 402 403 switch (cmd) { 404 case SIOCSIFFLAGS: 405 s = splimp(); 406 if (ifp->if_flags & IFF_UP) { 407#if defined(__FreeBSD__) 408 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 409#else 410 if (!(ifp->if_flags & IFF_RUNNING)) 411#endif 412 fwip_init(&fwip->fw_softc); 413 } else { 414#if defined(__FreeBSD__) 415 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 416#else 417 if (ifp->if_flags & IFF_RUNNING) 418#endif 419 fwip_stop(fwip); 420 } 421 splx(s); 422 break; 423 case SIOCADDMULTI: 424 case SIOCDELMULTI: 425 break; 426 case SIOCSIFCAP: 427#ifdef DEVICE_POLLING 428 { 429 struct ifreq *ifr = (struct ifreq *) data; 430 struct firewire_comm *fc = fwip->fd.fc; 431 432 if (ifr->ifr_reqcap & IFCAP_POLLING && 433 !(ifp->if_capenable & IFCAP_POLLING)) { 434 error = ether_poll_register(fwip_poll, ifp); 435 if (error) 436 return(error); 437 /* Disable interrupts */ 438 fc->set_intr(fc, 0); 439 ifp->if_capenable |= IFCAP_POLLING | 440 IFCAP_POLLING_NOCOUNT; 441 return (error); 442 443 } 444 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 445 ifp->if_capenable & IFCAP_POLLING) { 446 error = ether_poll_deregister(ifp); 447 /* Enable interrupts. */ 448 fc->set_intr(fc, 1); 449 ifp->if_capenable &= ~IFCAP_POLLING; 450 ifp->if_capenable &= ~IFCAP_POLLING_NOCOUNT; 451 return (error); 452 } 453 } 454#endif /* DEVICE_POLLING */ 455 break; 456#if defined(__FreeBSD__) && __FreeBSD_version >= 500000 457 default: 458#else 459 case SIOCSIFADDR: 460 case SIOCGIFADDR: 461 case SIOCSIFMTU: 462#endif 463 s = splimp(); 464 error = firewire_ioctl(ifp, cmd, data); 465 splx(s); 466 return (error); 467#if defined(__DragonFly__) || __FreeBSD_version < 500000 468 default: 469 return (EINVAL); 470#endif 471 } 472 473 return (0); 474} 475 476static void 477fwip_post_busreset(void *arg) 478{ 479 struct fwip_softc *fwip = arg; 480 struct crom_src *src; 481 struct crom_chunk *root; 482 483 src = fwip->fd.fc->crom_src; 484 root = fwip->fd.fc->crom_root; 485 486 /* RFC2734 IPv4 over IEEE1394 */ 487 bzero(&fwip->unit4, sizeof(struct crom_chunk)); 488 crom_add_chunk(src, root, &fwip->unit4, CROM_UDIR); 489 crom_add_entry(&fwip->unit4, CSRKEY_SPEC, CSRVAL_IETF); 490 crom_add_simple_text(src, &fwip->unit4, &fwip->spec4, "IANA"); 491 crom_add_entry(&fwip->unit4, CSRKEY_VER, 1); 492 crom_add_simple_text(src, &fwip->unit4, &fwip->ver4, "IPv4"); 493 494 /* RFC3146 IPv6 over IEEE1394 */ 495 bzero(&fwip->unit6, sizeof(struct crom_chunk)); 496 crom_add_chunk(src, root, &fwip->unit6, CROM_UDIR); 497 crom_add_entry(&fwip->unit6, CSRKEY_SPEC, CSRVAL_IETF); 498 crom_add_simple_text(src, &fwip->unit6, &fwip->spec6, "IANA"); 499 crom_add_entry(&fwip->unit6, CSRKEY_VER, 2); 500 crom_add_simple_text(src, &fwip->unit6, &fwip->ver6, "IPv6"); 501 502 fwip->last_dest.hi = 0; 503 fwip->last_dest.lo = 0; 504 firewire_busreset(fwip->fw_softc.fwip_ifp); 505} 506 507static void 508fwip_output_callback(struct fw_xfer *xfer) 509{ 510 struct fwip_softc *fwip; 511 struct ifnet *ifp; 512 int s; 513 514 fwip = (struct fwip_softc *)xfer->sc; 515 ifp = fwip->fw_softc.fwip_ifp; 516 /* XXX error check */ 517 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 518 if (xfer->resp != 0) 519 ifp->if_oerrors ++; 520 521 m_freem(xfer->mbuf); 522 fw_xfer_unload(xfer); 523 524 s = splimp(); 525 FWIP_LOCK(fwip); 526 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 527 FWIP_UNLOCK(fwip); 528 splx(s); 529 530 /* for queue full */ 531 if (ifp->if_snd.ifq_head != NULL) { 532 fwip_start(ifp); 533 } 534} 535 536static void 537fwip_start(struct ifnet *ifp) 538{ 539 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 540 int s; 541 542 FWIPDEBUG(ifp, "starting\n"); 543 544 if (fwip->dma_ch < 0) { 545 struct mbuf *m = NULL; 546 547 FWIPDEBUG(ifp, "not ready\n"); 548 549 s = splimp(); 550 do { 551 IF_DEQUEUE(&ifp->if_snd, m); 552 if (m != NULL) 553 m_freem(m); 554 ifp->if_oerrors ++; 555 } while (m != NULL); 556 splx(s); 557 558 return; 559 } 560 561 s = splimp(); 562#if defined(__FreeBSD__) 563 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 564#else 565 ifp->if_flags |= IFF_OACTIVE; 566#endif 567 568 if (ifp->if_snd.ifq_len != 0) 569 fwip_async_output(fwip, ifp); 570 571#if defined(__FreeBSD__) 572 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 573#else 574 ifp->if_flags &= ~IFF_OACTIVE; 575#endif 576 splx(s); 577} 578 579/* Async. stream output */ 580static void 581fwip_async_output(struct fwip_softc *fwip, struct ifnet *ifp) 582{ 583 struct firewire_comm *fc = fwip->fd.fc; 584 struct mbuf *m; 585 struct m_tag *mtag; 586 struct fw_hwaddr *destfw; 587 struct fw_xfer *xfer; 588 struct fw_xferq *xferq; 589 struct fw_pkt *fp; 590 uint16_t nodeid; 591 int error; 592 int i = 0; 593 594 xfer = NULL; 595 xferq = fc->atq; 596 while ((xferq->queued < xferq->maxq - 1) && 597 (ifp->if_snd.ifq_head != NULL)) { 598 FWIP_LOCK(fwip); 599 xfer = STAILQ_FIRST(&fwip->xferlist); 600 if (xfer == NULL) { 601 FWIP_UNLOCK(fwip); 602#if 0 603 printf("if_fwip: lack of xfer\n"); 604#endif 605 break; 606 } 607 STAILQ_REMOVE_HEAD(&fwip->xferlist, link); 608 FWIP_UNLOCK(fwip); 609 610 IF_DEQUEUE(&ifp->if_snd, m); 611 if (m == NULL) { 612 FWIP_LOCK(fwip); 613 STAILQ_INSERT_HEAD(&fwip->xferlist, xfer, link); 614 FWIP_UNLOCK(fwip); 615 break; 616 } 617 618 /* 619 * Dig out the link-level address which 620 * firewire_output got via arp or neighbour 621 * discovery. If we don't have a link-level address, 622 * just stick the thing on the broadcast channel. 623 */ 624 mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, 0); 625 if (mtag == NULL) 626 destfw = 0; 627 else 628 destfw = (struct fw_hwaddr *) (mtag + 1); 629 630 631 /* 632 * We don't do any bpf stuff here - the generic code 633 * in firewire_output gives the packet to bpf before 634 * it adds the link-level encapsulation. 635 */ 636 637 /* 638 * Put the mbuf in the xfer early in case we hit an 639 * error case below - fwip_output_callback will free 640 * the mbuf. 641 */ 642 xfer->mbuf = m; 643 644 /* 645 * We use the arp result (if any) to add a suitable firewire 646 * packet header before handing off to the bus. 647 */ 648 fp = &xfer->send.hdr; 649 nodeid = FWLOCALBUS | fc->nodeid; 650 if ((m->m_flags & M_BCAST) || !destfw) { 651 /* 652 * Broadcast packets are sent as GASP packets with 653 * specifier ID 0x00005e, version 1 on the broadcast 654 * channel. To be conservative, we send at the 655 * slowest possible speed. 656 */ 657 uint32_t *p; 658 659 M_PREPEND(m, 2*sizeof(uint32_t), M_NOWAIT); 660 p = mtod(m, uint32_t *); 661 fp->mode.stream.len = m->m_pkthdr.len; 662 fp->mode.stream.chtag = broadcast_channel; 663 fp->mode.stream.tcode = FWTCODE_STREAM; 664 fp->mode.stream.sy = 0; 665 xfer->send.spd = 0; 666 p[0] = htonl(nodeid << 16); 667 p[1] = htonl((0x5e << 24) | 1); 668 } else { 669 /* 670 * Unicast packets are sent as block writes to the 671 * target's unicast fifo address. If we can't 672 * find the node address, we just give up. We 673 * could broadcast it but that might overflow 674 * the packet size limitations due to the 675 * extra GASP header. Note: the hardware 676 * address is stored in network byte order to 677 * make life easier for ARP. 678 */ 679 struct fw_device *fd; 680 struct fw_eui64 eui; 681 682 eui.hi = ntohl(destfw->sender_unique_ID_hi); 683 eui.lo = ntohl(destfw->sender_unique_ID_lo); 684 if (fwip->last_dest.hi != eui.hi || 685 fwip->last_dest.lo != eui.lo) { 686 fd = fw_noderesolve_eui64(fc, &eui); 687 if (!fd) { 688 /* error */ 689 ifp->if_oerrors ++; 690 /* XXX set error code */ 691 fwip_output_callback(xfer); 692 continue; 693 694 } 695 fwip->last_hdr.mode.wreqb.dst = FWLOCALBUS | fd->dst; 696 fwip->last_hdr.mode.wreqb.tlrt = 0; 697 fwip->last_hdr.mode.wreqb.tcode = FWTCODE_WREQB; 698 fwip->last_hdr.mode.wreqb.pri = 0; 699 fwip->last_hdr.mode.wreqb.src = nodeid; 700 fwip->last_hdr.mode.wreqb.dest_hi = 701 ntohs(destfw->sender_unicast_FIFO_hi); 702 fwip->last_hdr.mode.wreqb.dest_lo = 703 ntohl(destfw->sender_unicast_FIFO_lo); 704 fwip->last_hdr.mode.wreqb.extcode = 0; 705 fwip->last_dest = eui; 706 } 707 708 fp->mode.wreqb = fwip->last_hdr.mode.wreqb; 709 fp->mode.wreqb.len = m->m_pkthdr.len; 710 xfer->send.spd = min(destfw->sspd, fc->speed); 711 } 712 713 xfer->send.pay_len = m->m_pkthdr.len; 714 715 error = fw_asyreq(fc, -1, xfer); 716 if (error == EAGAIN) { 717 /* 718 * We ran out of tlabels - requeue the packet 719 * for later transmission. 720 */ 721 xfer->mbuf = 0; 722 FWIP_LOCK(fwip); 723 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 724 FWIP_UNLOCK(fwip); 725 IF_PREPEND(&ifp->if_snd, m); 726 break; 727 } 728 if (error) { 729 /* error */ 730 ifp->if_oerrors ++; 731 /* XXX set error code */ 732 fwip_output_callback(xfer); 733 continue; 734 } else { 735 ifp->if_opackets ++; 736 i++; 737 } 738 } 739#if 0 740 if (i > 1) 741 printf("%d queued\n", i); 742#endif 743 if (i > 0) 744 xferq->start(fc); 745} 746 747static void 748fwip_start_send (void *arg, int count) 749{ 750 struct fwip_softc *fwip = arg; 751 752 fwip->fd.fc->atq->start(fwip->fd.fc); 753} 754 755/* Async. stream output */ 756static void 757fwip_stream_input(struct fw_xferq *xferq) 758{ 759 struct mbuf *m, *m0; 760 struct m_tag *mtag; 761 struct ifnet *ifp; 762 struct fwip_softc *fwip; 763 struct fw_bulkxfer *sxfer; 764 struct fw_pkt *fp; 765 uint16_t src; 766 uint32_t *p; 767 768 769 fwip = (struct fwip_softc *)xferq->sc; 770 ifp = fwip->fw_softc.fwip_ifp; 771 772 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 773 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 774 fp = mtod(sxfer->mbuf, struct fw_pkt *); 775 if (fwip->fd.fc->irx_post != NULL) 776 fwip->fd.fc->irx_post(fwip->fd.fc, fp->mode.ld); 777 m = sxfer->mbuf; 778 779 /* insert new rbuf */ 780 sxfer->mbuf = m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 781 if (m0 != NULL) { 782 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 783 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 784 } else 785 printf("fwip_as_input: m_getcl failed\n"); 786 787 /* 788 * We must have a GASP header - leave the 789 * encapsulation sanity checks to the generic 790 * code. Remeber that we also have the firewire async 791 * stream header even though that isn't accounted for 792 * in mode.stream.len. 793 */ 794 if (sxfer->resp != 0 || fp->mode.stream.len < 795 2*sizeof(uint32_t)) { 796 m_freem(m); 797 ifp->if_ierrors ++; 798 continue; 799 } 800 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 801 + sizeof(fp->mode.stream); 802 803 /* 804 * If we received the packet on the broadcast channel, 805 * mark it as broadcast, otherwise we assume it must 806 * be multicast. 807 */ 808 if (fp->mode.stream.chtag == broadcast_channel) 809 m->m_flags |= M_BCAST; 810 else 811 m->m_flags |= M_MCAST; 812 813 /* 814 * Make sure we recognise the GASP specifier and 815 * version. 816 */ 817 p = mtod(m, uint32_t *); 818 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 0x00005e 819 || (ntohl(p[2]) & 0xffffff) != 1) { 820 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 821 ntohl(p[1]), ntohl(p[2])); 822 m_freem(m); 823 ifp->if_ierrors ++; 824 continue; 825 } 826 827 /* 828 * Record the sender ID for possible BPF usage. 829 */ 830 src = ntohl(p[1]) >> 16; 831 if (bpf_peers_present(ifp->if_bpf)) { 832 mtag = m_tag_alloc(MTAG_FIREWIRE, 833 MTAG_FIREWIRE_SENDER_EUID, 834 2*sizeof(uint32_t), M_NOWAIT); 835 if (mtag) { 836 /* bpf wants it in network byte order */ 837 struct fw_device *fd; 838 uint32_t *p = (uint32_t *) (mtag + 1); 839 fd = fw_noderesolve_nodeid(fwip->fd.fc, 840 src & 0x3f); 841 if (fd) { 842 p[0] = htonl(fd->eui.hi); 843 p[1] = htonl(fd->eui.lo); 844 } else { 845 p[0] = 0; 846 p[1] = 0; 847 } 848 m_tag_prepend(m, mtag); 849 } 850 } 851 852 /* 853 * Trim off the GASP header 854 */ 855 m_adj(m, 3*sizeof(uint32_t)); 856 m->m_pkthdr.rcvif = ifp; 857 firewire_input(ifp, m, src); 858 ifp->if_ipackets ++; 859 } 860 if (STAILQ_FIRST(&xferq->stfree) != NULL) 861 fwip->fd.fc->irx_enable(fwip->fd.fc, fwip->dma_ch); 862} 863 864static __inline void 865fwip_unicast_input_recycle(struct fwip_softc *fwip, struct fw_xfer *xfer) 866{ 867 struct mbuf *m; 868 869 /* 870 * We have finished with a unicast xfer. Allocate a new 871 * cluster and stick it on the back of the input queue. 872 */ 873 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 874 xfer->mbuf = m; 875 xfer->recv.payload = mtod(m, uint32_t *); 876 xfer->recv.pay_len = MCLBYTES; 877 xfer->mbuf = m; 878 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 879} 880 881static void 882fwip_unicast_input(struct fw_xfer *xfer) 883{ 884 uint64_t address; 885 struct mbuf *m; 886 struct m_tag *mtag; 887 struct ifnet *ifp; 888 struct fwip_softc *fwip; 889 struct fw_pkt *fp; 890 //struct fw_pkt *sfp; 891 int rtcode; 892 893 fwip = (struct fwip_softc *)xfer->sc; 894 ifp = fwip->fw_softc.fwip_ifp; 895 m = xfer->mbuf; 896 xfer->mbuf = 0; 897 fp = &xfer->recv.hdr; 898 899 /* 900 * Check the fifo address - we only accept addresses of 901 * exactly INET_FIFO. 902 */ 903 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 904 | fp->mode.wreqb.dest_lo; 905 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 906 rtcode = FWRCODE_ER_TYPE; 907 } else if (address != INET_FIFO) { 908 rtcode = FWRCODE_ER_ADDR; 909 } else { 910 rtcode = FWRCODE_COMPLETE; 911 } 912 913 /* 914 * Pick up a new mbuf and stick it on the back of the receive 915 * queue. 916 */ 917 fwip_unicast_input_recycle(fwip, xfer); 918 919 /* 920 * If we've already rejected the packet, give up now. 921 */ 922 if (rtcode != FWRCODE_COMPLETE) { 923 m_freem(m); 924 ifp->if_ierrors ++; 925 return; 926 } 927 928 if (bpf_peers_present(ifp->if_bpf)) { 929 /* 930 * Record the sender ID for possible BPF usage. 931 */ 932 mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID, 933 2*sizeof(uint32_t), M_NOWAIT); 934 if (mtag) { 935 /* bpf wants it in network byte order */ 936 struct fw_device *fd; 937 uint32_t *p = (uint32_t *) (mtag + 1); 938 fd = fw_noderesolve_nodeid(fwip->fd.fc, 939 fp->mode.wreqb.src & 0x3f); 940 if (fd) { 941 p[0] = htonl(fd->eui.hi); 942 p[1] = htonl(fd->eui.lo); 943 } else { 944 p[0] = 0; 945 p[1] = 0; 946 } 947 m_tag_prepend(m, mtag); 948 } 949 } 950 951 /* 952 * Hand off to the generic encapsulation code. We don't use 953 * ifp->if_input so that we can pass the source nodeid as an 954 * argument to facilitate link-level fragment reassembly. 955 */ 956 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 957 m->m_pkthdr.rcvif = ifp; 958 firewire_input(ifp, m, fp->mode.wreqb.src); 959 ifp->if_ipackets ++; 960} 961 962static devclass_t fwip_devclass; 963 964static device_method_t fwip_methods[] = { 965 /* device interface */ 966 DEVMETHOD(device_identify, fwip_identify), 967 DEVMETHOD(device_probe, fwip_probe), 968 DEVMETHOD(device_attach, fwip_attach), 969 DEVMETHOD(device_detach, fwip_detach), 970 { 0, 0 } 971}; 972 973static driver_t fwip_driver = { 974 "fwip", 975 fwip_methods, 976 sizeof(struct fwip_softc), 977}; 978 979 980#ifdef __DragonFly__ 981DECLARE_DUMMY_MODULE(fwip); 982#endif 983DRIVER_MODULE(fwip, firewire, fwip_driver, fwip_devclass, 0, 0); 984MODULE_VERSION(fwip, 1); 985MODULE_DEPEND(fwip, firewire, 1, 1, 1); 986