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: stable/11/sys/dev/firewire/if_fwip.c 315221 2017-03-14 02:06:03Z pfg $ 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#include <dev/firewire/firewire.h> 64#include <dev/firewire/firewirereg.h> 65#include <dev/firewire/iec13213.h> 66#include <dev/firewire/if_fwipvar.h> 67 68/* 69 * We really need a mechanism for allocating regions in the FIFO 70 * address space. We pick a address in the OHCI controller's 'middle' 71 * address space. This means that the controller will automatically 72 * send responses for us, which is fine since we don't have any 73 * important information to put in the response anyway. 74 */ 75#define INET_FIFO 0xfffe00000000LL 76 77#define FWIPDEBUG if (fwipdebug) if_printf 78#define TX_MAX_QUEUE (FWMAXQUEUE - 1) 79 80/* network interface */ 81static void fwip_start (struct ifnet *); 82static int fwip_ioctl (struct ifnet *, u_long, caddr_t); 83static void fwip_init (void *); 84 85static void fwip_post_busreset (void *); 86static void fwip_output_callback (struct fw_xfer *); 87static void fwip_async_output (struct fwip_softc *, struct ifnet *); 88static void fwip_start_send (void *, int); 89static void fwip_stream_input (struct fw_xferq *); 90static void fwip_unicast_input(struct fw_xfer *); 91 92static int fwipdebug = 0; 93static int broadcast_channel = 0xc0 | 0x1f; /* tag | channel(XXX) */ 94static int tx_speed = 2; 95static int rx_queue_len = FWMAXQUEUE; 96 97static MALLOC_DEFINE(M_FWIP, "if_fwip", "IP over FireWire interface"); 98SYSCTL_INT(_debug, OID_AUTO, if_fwip_debug, CTLFLAG_RW, &fwipdebug, 0, ""); 99SYSCTL_DECL(_hw_firewire); 100static SYSCTL_NODE(_hw_firewire, OID_AUTO, fwip, CTLFLAG_RD, 0, 101 "Firewire ip subsystem"); 102SYSCTL_INT(_hw_firewire_fwip, OID_AUTO, rx_queue_len, CTLFLAG_RWTUN, &rx_queue_len, 103 0, "Length of the receive queue"); 104 105#ifdef DEVICE_POLLING 106static poll_handler_t fwip_poll; 107 108static int 109fwip_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) 110{ 111 struct fwip_softc *fwip; 112 struct firewire_comm *fc; 113 114 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 115 return (0); 116 117 fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 118 fc = fwip->fd.fc; 119 fc->poll(fc, (cmd == POLL_AND_CHECK_STATUS)?0:1, count); 120 return (0); 121} 122#endif /* DEVICE_POLLING */ 123 124static void 125fwip_identify(driver_t *driver, device_t parent) 126{ 127 BUS_ADD_CHILD(parent, 0, "fwip", device_get_unit(parent)); 128} 129 130static int 131fwip_probe(device_t dev) 132{ 133 device_t pa; 134 135 pa = device_get_parent(dev); 136 if (device_get_unit(dev) != device_get_unit(pa)) { 137 return (ENXIO); 138 } 139 140 device_set_desc(dev, "IP over FireWire"); 141 return (0); 142} 143 144static int 145fwip_attach(device_t dev) 146{ 147 struct fwip_softc *fwip; 148 struct ifnet *ifp; 149 int unit, s; 150 struct fw_hwaddr *hwaddr; 151 152 fwip = ((struct fwip_softc *)device_get_softc(dev)); 153 unit = device_get_unit(dev); 154 ifp = fwip->fw_softc.fwip_ifp = if_alloc(IFT_IEEE1394); 155 if (ifp == NULL) 156 return (ENOSPC); 157 158 mtx_init(&fwip->mtx, "fwip", NULL, MTX_DEF); 159 /* XXX */ 160 fwip->dma_ch = -1; 161 162 fwip->fd.fc = device_get_ivars(dev); 163 if (tx_speed < 0) 164 tx_speed = fwip->fd.fc->speed; 165 166 fwip->fd.dev = dev; 167 fwip->fd.post_explore = NULL; 168 fwip->fd.post_busreset = fwip_post_busreset; 169 fwip->fw_softc.fwip = fwip; 170 TASK_INIT(&fwip->start_send, 0, fwip_start_send, fwip); 171 172 /* 173 * Encode our hardware the way that arp likes it. 174 */ 175 hwaddr = &IFP2FWC(fwip->fw_softc.fwip_ifp)->fc_hwaddr; 176 hwaddr->sender_unique_ID_hi = htonl(fwip->fd.fc->eui.hi); 177 hwaddr->sender_unique_ID_lo = htonl(fwip->fd.fc->eui.lo); 178 hwaddr->sender_max_rec = fwip->fd.fc->maxrec; 179 hwaddr->sspd = fwip->fd.fc->speed; 180 hwaddr->sender_unicast_FIFO_hi = htons((uint16_t)(INET_FIFO >> 32)); 181 hwaddr->sender_unicast_FIFO_lo = htonl((uint32_t)INET_FIFO); 182 183 /* fill the rest and attach interface */ 184 ifp->if_softc = &fwip->fw_softc; 185 186 if_initname(ifp, device_get_name(dev), unit); 187 ifp->if_init = fwip_init; 188 ifp->if_start = fwip_start; 189 ifp->if_ioctl = fwip_ioctl; 190 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 191 ifp->if_snd.ifq_maxlen = TX_MAX_QUEUE; 192#ifdef DEVICE_POLLING 193 ifp->if_capabilities |= IFCAP_POLLING; 194#endif 195 196 s = splimp(); 197 firewire_ifattach(ifp, hwaddr); 198 splx(s); 199 200 FWIPDEBUG(ifp, "interface created\n"); 201 return 0; 202} 203 204static void 205fwip_stop(struct fwip_softc *fwip) 206{ 207 struct firewire_comm *fc; 208 struct fw_xferq *xferq; 209 struct ifnet *ifp = fwip->fw_softc.fwip_ifp; 210 struct fw_xfer *xfer, *next; 211 int i; 212 213 fc = fwip->fd.fc; 214 215 if (fwip->dma_ch >= 0) { 216 xferq = fc->ir[fwip->dma_ch]; 217 218 if (xferq->flag & FWXFERQ_RUNNING) 219 fc->irx_disable(fc, fwip->dma_ch); 220 xferq->flag &= 221 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 222 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 223 xferq->hand = NULL; 224 225 for (i = 0; i < xferq->bnchunk; i++) 226 m_freem(xferq->bulkxfer[i].mbuf); 227 free(xferq->bulkxfer, M_FWIP); 228 229 fw_bindremove(fc, &fwip->fwb); 230 for (xfer = STAILQ_FIRST(&fwip->fwb.xferlist); xfer != NULL; 231 xfer = next) { 232 next = STAILQ_NEXT(xfer, link); 233 fw_xfer_free(xfer); 234 } 235 236 for (xfer = STAILQ_FIRST(&fwip->xferlist); xfer != NULL; 237 xfer = next) { 238 next = STAILQ_NEXT(xfer, link); 239 fw_xfer_free(xfer); 240 } 241 STAILQ_INIT(&fwip->xferlist); 242 243 xferq->bulkxfer = NULL; 244 fwip->dma_ch = -1; 245 } 246 247 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); 248} 249 250static int 251fwip_detach(device_t dev) 252{ 253 struct fwip_softc *fwip; 254 struct ifnet *ifp; 255 int s; 256 257 fwip = (struct fwip_softc *)device_get_softc(dev); 258 ifp = fwip->fw_softc.fwip_ifp; 259 260#ifdef DEVICE_POLLING 261 if (ifp->if_capenable & IFCAP_POLLING) 262 ether_poll_deregister(ifp); 263#endif 264 265 s = splimp(); 266 267 fwip_stop(fwip); 268 firewire_ifdetach(ifp); 269 if_free(ifp); 270 mtx_destroy(&fwip->mtx); 271 272 splx(s); 273 return 0; 274} 275 276static void 277fwip_init(void *arg) 278{ 279 struct fwip_softc *fwip = ((struct fwip_eth_softc *)arg)->fwip; 280 struct firewire_comm *fc; 281 struct ifnet *ifp = fwip->fw_softc.fwip_ifp; 282 struct fw_xferq *xferq; 283 struct fw_xfer *xfer; 284 struct mbuf *m; 285 int i; 286 287 FWIPDEBUG(ifp, "initializing\n"); 288 289 fc = fwip->fd.fc; 290#define START 0 291 if (fwip->dma_ch < 0) { 292 fwip->dma_ch = fw_open_isodma(fc, /* tx */0); 293 if (fwip->dma_ch < 0) 294 return; 295 xferq = fc->ir[fwip->dma_ch]; 296 xferq->flag |= FWXFERQ_EXTBUF | 297 FWXFERQ_HANDLER | FWXFERQ_STREAM; 298 xferq->flag &= ~0xff; 299 xferq->flag |= broadcast_channel & 0xff; 300 /* register fwip_input handler */ 301 xferq->sc = (caddr_t) fwip; 302 xferq->hand = fwip_stream_input; 303 xferq->bnchunk = rx_queue_len; 304 xferq->bnpacket = 1; 305 xferq->psize = MCLBYTES; 306 xferq->queued = 0; 307 xferq->buf = NULL; 308 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 309 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 310 M_FWIP, M_WAITOK); 311 if (xferq->bulkxfer == NULL) { 312 printf("if_fwip: malloc failed\n"); 313 return; 314 } 315 STAILQ_INIT(&xferq->stvalid); 316 STAILQ_INIT(&xferq->stfree); 317 STAILQ_INIT(&xferq->stdma); 318 xferq->stproc = NULL; 319 for (i = 0; i < xferq->bnchunk; i++) { 320 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 321 xferq->bulkxfer[i].mbuf = m; 322 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 323 STAILQ_INSERT_TAIL(&xferq->stfree, 324 &xferq->bulkxfer[i], link); 325 } 326 327 fwip->fwb.start = INET_FIFO; 328 fwip->fwb.end = INET_FIFO + 16384; /* S3200 packet size */ 329 330 /* pre-allocate xfer */ 331 STAILQ_INIT(&fwip->fwb.xferlist); 332 for (i = 0; i < rx_queue_len; i++) { 333 xfer = fw_xfer_alloc(M_FWIP); 334 if (xfer == NULL) 335 break; 336 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 337 xfer->recv.payload = mtod(m, uint32_t *); 338 xfer->recv.pay_len = MCLBYTES; 339 xfer->hand = fwip_unicast_input; 340 xfer->fc = fc; 341 xfer->sc = (caddr_t)fwip; 342 xfer->mbuf = m; 343 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 344 } 345 fw_bindadd(fc, &fwip->fwb); 346 347 STAILQ_INIT(&fwip->xferlist); 348 for (i = 0; i < TX_MAX_QUEUE; i++) { 349 xfer = fw_xfer_alloc(M_FWIP); 350 if (xfer == NULL) 351 break; 352 xfer->send.spd = tx_speed; 353 xfer->fc = fwip->fd.fc; 354 xfer->sc = (caddr_t)fwip; 355 xfer->hand = fwip_output_callback; 356 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 357 } 358 } else 359 xferq = fc->ir[fwip->dma_ch]; 360 361 fwip->last_dest.hi = 0; 362 fwip->last_dest.lo = 0; 363 364 /* start dma */ 365 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 366 fc->irx_enable(fc, fwip->dma_ch); 367 368 ifp->if_drv_flags |= IFF_DRV_RUNNING; 369 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 370 371#if 0 372 /* attempt to start output */ 373 fwip_start(ifp); 374#endif 375} 376 377static int 378fwip_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) 379{ 380 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 381 int s, error; 382 383 switch (cmd) { 384 case SIOCSIFFLAGS: 385 s = splimp(); 386 if (ifp->if_flags & IFF_UP) { 387 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING)) 388 fwip_init(&fwip->fw_softc); 389 } else { 390 if (ifp->if_drv_flags & IFF_DRV_RUNNING) 391 fwip_stop(fwip); 392 } 393 splx(s); 394 break; 395 case SIOCADDMULTI: 396 case SIOCDELMULTI: 397 break; 398 case SIOCSIFCAP: 399#ifdef DEVICE_POLLING 400 { 401 struct ifreq *ifr = (struct ifreq *) data; 402 struct firewire_comm *fc = fwip->fd.fc; 403 404 if (ifr->ifr_reqcap & IFCAP_POLLING && 405 !(ifp->if_capenable & IFCAP_POLLING)) { 406 error = ether_poll_register(fwip_poll, ifp); 407 if (error) 408 return (error); 409 /* Disable interrupts */ 410 fc->set_intr(fc, 0); 411 ifp->if_capenable |= IFCAP_POLLING | 412 IFCAP_POLLING_NOCOUNT; 413 return (error); 414 } 415 if (!(ifr->ifr_reqcap & IFCAP_POLLING) && 416 ifp->if_capenable & IFCAP_POLLING) { 417 error = ether_poll_deregister(ifp); 418 /* Enable interrupts. */ 419 fc->set_intr(fc, 1); 420 ifp->if_capenable &= ~IFCAP_POLLING; 421 ifp->if_capenable &= ~IFCAP_POLLING_NOCOUNT; 422 return (error); 423 } 424 } 425#endif /* DEVICE_POLLING */ 426 break; 427 default: 428 s = splimp(); 429 error = firewire_ioctl(ifp, cmd, data); 430 splx(s); 431 return (error); 432 } 433 434 return (0); 435} 436 437static void 438fwip_post_busreset(void *arg) 439{ 440 struct fwip_softc *fwip = arg; 441 struct crom_src *src; 442 struct crom_chunk *root; 443 444 src = fwip->fd.fc->crom_src; 445 root = fwip->fd.fc->crom_root; 446 447 /* RFC2734 IPv4 over IEEE1394 */ 448 bzero(&fwip->unit4, sizeof(struct crom_chunk)); 449 crom_add_chunk(src, root, &fwip->unit4, CROM_UDIR); 450 crom_add_entry(&fwip->unit4, CSRKEY_SPEC, CSRVAL_IETF); 451 crom_add_simple_text(src, &fwip->unit4, &fwip->spec4, "IANA"); 452 crom_add_entry(&fwip->unit4, CSRKEY_VER, 1); 453 crom_add_simple_text(src, &fwip->unit4, &fwip->ver4, "IPv4"); 454 455 /* RFC3146 IPv6 over IEEE1394 */ 456 bzero(&fwip->unit6, sizeof(struct crom_chunk)); 457 crom_add_chunk(src, root, &fwip->unit6, CROM_UDIR); 458 crom_add_entry(&fwip->unit6, CSRKEY_SPEC, CSRVAL_IETF); 459 crom_add_simple_text(src, &fwip->unit6, &fwip->spec6, "IANA"); 460 crom_add_entry(&fwip->unit6, CSRKEY_VER, 2); 461 crom_add_simple_text(src, &fwip->unit6, &fwip->ver6, "IPv6"); 462 463 fwip->last_dest.hi = 0; 464 fwip->last_dest.lo = 0; 465 firewire_busreset(fwip->fw_softc.fwip_ifp); 466} 467 468static void 469fwip_output_callback(struct fw_xfer *xfer) 470{ 471 struct fwip_softc *fwip; 472 struct ifnet *ifp; 473 int s; 474 475 fwip = (struct fwip_softc *)xfer->sc; 476 ifp = fwip->fw_softc.fwip_ifp; 477 /* XXX error check */ 478 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 479 if (xfer->resp != 0) 480 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 481 m_freem(xfer->mbuf); 482 fw_xfer_unload(xfer); 483 484 s = splimp(); 485 FWIP_LOCK(fwip); 486 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 487 FWIP_UNLOCK(fwip); 488 splx(s); 489 490 /* for queue full */ 491 if (ifp->if_snd.ifq_head != NULL) { 492 fwip_start(ifp); 493 } 494} 495 496static void 497fwip_start(struct ifnet *ifp) 498{ 499 struct fwip_softc *fwip = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 500 int s; 501 502 FWIPDEBUG(ifp, "starting\n"); 503 504 if (fwip->dma_ch < 0) { 505 struct mbuf *m = NULL; 506 507 FWIPDEBUG(ifp, "not ready\n"); 508 509 s = splimp(); 510 do { 511 IF_DEQUEUE(&ifp->if_snd, m); 512 if (m != NULL) 513 m_freem(m); 514 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 515 } while (m != NULL); 516 splx(s); 517 518 return; 519 } 520 521 s = splimp(); 522 ifp->if_drv_flags |= IFF_DRV_OACTIVE; 523 524 if (ifp->if_snd.ifq_len != 0) 525 fwip_async_output(fwip, ifp); 526 527 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; 528 splx(s); 529} 530 531/* Async. stream output */ 532static void 533fwip_async_output(struct fwip_softc *fwip, struct ifnet *ifp) 534{ 535 struct firewire_comm *fc = fwip->fd.fc; 536 struct mbuf *m; 537 struct m_tag *mtag; 538 struct fw_hwaddr *destfw; 539 struct fw_xfer *xfer; 540 struct fw_xferq *xferq; 541 struct fw_pkt *fp; 542 uint16_t nodeid; 543 int error; 544 int i = 0; 545 546 xfer = NULL; 547 xferq = fc->atq; 548 while ((xferq->queued < xferq->maxq - 1) && 549 (ifp->if_snd.ifq_head != NULL)) { 550 FWIP_LOCK(fwip); 551 xfer = STAILQ_FIRST(&fwip->xferlist); 552 if (xfer == NULL) { 553 FWIP_UNLOCK(fwip); 554#if 0 555 printf("if_fwip: lack of xfer\n"); 556#endif 557 break; 558 } 559 STAILQ_REMOVE_HEAD(&fwip->xferlist, link); 560 FWIP_UNLOCK(fwip); 561 562 IF_DEQUEUE(&ifp->if_snd, m); 563 if (m == NULL) { 564 FWIP_LOCK(fwip); 565 STAILQ_INSERT_HEAD(&fwip->xferlist, xfer, link); 566 FWIP_UNLOCK(fwip); 567 break; 568 } 569 570 /* 571 * Dig out the link-level address which 572 * firewire_output got via arp or neighbour 573 * discovery. If we don't have a link-level address, 574 * just stick the thing on the broadcast channel. 575 */ 576 mtag = m_tag_locate(m, MTAG_FIREWIRE, MTAG_FIREWIRE_HWADDR, 0); 577 if (mtag == NULL) 578 destfw = NULL; 579 else 580 destfw = (struct fw_hwaddr *) (mtag + 1); 581 582 583 /* 584 * We don't do any bpf stuff here - the generic code 585 * in firewire_output gives the packet to bpf before 586 * it adds the link-level encapsulation. 587 */ 588 589 /* 590 * Put the mbuf in the xfer early in case we hit an 591 * error case below - fwip_output_callback will free 592 * the mbuf. 593 */ 594 xfer->mbuf = m; 595 596 /* 597 * We use the arp result (if any) to add a suitable firewire 598 * packet header before handing off to the bus. 599 */ 600 fp = &xfer->send.hdr; 601 nodeid = FWLOCALBUS | fc->nodeid; 602 if ((m->m_flags & M_BCAST) || !destfw) { 603 /* 604 * Broadcast packets are sent as GASP packets with 605 * specifier ID 0x00005e, version 1 on the broadcast 606 * channel. To be conservative, we send at the 607 * slowest possible speed. 608 */ 609 uint32_t *p; 610 611 M_PREPEND(m, 2*sizeof(uint32_t), M_NOWAIT); 612 p = mtod(m, uint32_t *); 613 fp->mode.stream.len = m->m_pkthdr.len; 614 fp->mode.stream.chtag = broadcast_channel; 615 fp->mode.stream.tcode = FWTCODE_STREAM; 616 fp->mode.stream.sy = 0; 617 xfer->send.spd = 0; 618 p[0] = htonl(nodeid << 16); 619 p[1] = htonl((0x5e << 24) | 1); 620 } else { 621 /* 622 * Unicast packets are sent as block writes to the 623 * target's unicast fifo address. If we can't 624 * find the node address, we just give up. We 625 * could broadcast it but that might overflow 626 * the packet size limitations due to the 627 * extra GASP header. Note: the hardware 628 * address is stored in network byte order to 629 * make life easier for ARP. 630 */ 631 struct fw_device *fd; 632 struct fw_eui64 eui; 633 634 eui.hi = ntohl(destfw->sender_unique_ID_hi); 635 eui.lo = ntohl(destfw->sender_unique_ID_lo); 636 if (fwip->last_dest.hi != eui.hi || 637 fwip->last_dest.lo != eui.lo) { 638 fd = fw_noderesolve_eui64(fc, &eui); 639 if (!fd) { 640 /* error */ 641 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 642 /* XXX set error code */ 643 fwip_output_callback(xfer); 644 continue; 645 646 } 647 fwip->last_hdr.mode.wreqb.dst = FWLOCALBUS | fd->dst; 648 fwip->last_hdr.mode.wreqb.tlrt = 0; 649 fwip->last_hdr.mode.wreqb.tcode = FWTCODE_WREQB; 650 fwip->last_hdr.mode.wreqb.pri = 0; 651 fwip->last_hdr.mode.wreqb.src = nodeid; 652 fwip->last_hdr.mode.wreqb.dest_hi = 653 ntohs(destfw->sender_unicast_FIFO_hi); 654 fwip->last_hdr.mode.wreqb.dest_lo = 655 ntohl(destfw->sender_unicast_FIFO_lo); 656 fwip->last_hdr.mode.wreqb.extcode = 0; 657 fwip->last_dest = eui; 658 } 659 660 fp->mode.wreqb = fwip->last_hdr.mode.wreqb; 661 fp->mode.wreqb.len = m->m_pkthdr.len; 662 xfer->send.spd = min(destfw->sspd, fc->speed); 663 } 664 665 xfer->send.pay_len = m->m_pkthdr.len; 666 667 error = fw_asyreq(fc, -1, xfer); 668 if (error == EAGAIN) { 669 /* 670 * We ran out of tlabels - requeue the packet 671 * for later transmission. 672 */ 673 xfer->mbuf = 0; 674 FWIP_LOCK(fwip); 675 STAILQ_INSERT_TAIL(&fwip->xferlist, xfer, link); 676 FWIP_UNLOCK(fwip); 677 IF_PREPEND(&ifp->if_snd, m); 678 break; 679 } 680 if (error) { 681 /* error */ 682 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 683 /* XXX set error code */ 684 fwip_output_callback(xfer); 685 continue; 686 } else { 687 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 688 i++; 689 } 690 } 691#if 0 692 if (i > 1) 693 printf("%d queued\n", i); 694#endif 695 if (i > 0) 696 xferq->start(fc); 697} 698 699static void 700fwip_start_send (void *arg, int count) 701{ 702 struct fwip_softc *fwip = arg; 703 704 fwip->fd.fc->atq->start(fwip->fd.fc); 705} 706 707/* Async. stream output */ 708static void 709fwip_stream_input(struct fw_xferq *xferq) 710{ 711 struct mbuf *m, *m0; 712 struct m_tag *mtag; 713 struct ifnet *ifp; 714 struct fwip_softc *fwip; 715 struct fw_bulkxfer *sxfer; 716 struct fw_pkt *fp; 717 uint16_t src; 718 uint32_t *p; 719 720 721 fwip = (struct fwip_softc *)xferq->sc; 722 ifp = fwip->fw_softc.fwip_ifp; 723 724 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 725 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 726 fp = mtod(sxfer->mbuf, struct fw_pkt *); 727 if (fwip->fd.fc->irx_post != NULL) 728 fwip->fd.fc->irx_post(fwip->fd.fc, fp->mode.ld); 729 m = sxfer->mbuf; 730 731 /* insert new rbuf */ 732 sxfer->mbuf = m0 = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 733 if (m0 != NULL) { 734 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 735 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 736 } else 737 printf("fwip_as_input: m_getcl failed\n"); 738 739 /* 740 * We must have a GASP header - leave the 741 * encapsulation sanity checks to the generic 742 * code. Remember that we also have the firewire async 743 * stream header even though that isn't accounted for 744 * in mode.stream.len. 745 */ 746 if (sxfer->resp != 0 || fp->mode.stream.len < 747 2*sizeof(uint32_t)) { 748 m_freem(m); 749 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 750 continue; 751 } 752 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 753 + sizeof(fp->mode.stream); 754 755 /* 756 * If we received the packet on the broadcast channel, 757 * mark it as broadcast, otherwise we assume it must 758 * be multicast. 759 */ 760 if (fp->mode.stream.chtag == broadcast_channel) 761 m->m_flags |= M_BCAST; 762 else 763 m->m_flags |= M_MCAST; 764 765 /* 766 * Make sure we recognise the GASP specifier and 767 * version. 768 */ 769 p = mtod(m, uint32_t *); 770 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 0x00005e 771 || (ntohl(p[2]) & 0xffffff) != 1) { 772 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 773 ntohl(p[1]), ntohl(p[2])); 774 m_freem(m); 775 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 776 continue; 777 } 778 779 /* 780 * Record the sender ID for possible BPF usage. 781 */ 782 src = ntohl(p[1]) >> 16; 783 if (bpf_peers_present(ifp->if_bpf)) { 784 mtag = m_tag_alloc(MTAG_FIREWIRE, 785 MTAG_FIREWIRE_SENDER_EUID, 786 2*sizeof(uint32_t), M_NOWAIT); 787 if (mtag) { 788 /* bpf wants it in network byte order */ 789 struct fw_device *fd; 790 uint32_t *p = (uint32_t *) (mtag + 1); 791 fd = fw_noderesolve_nodeid(fwip->fd.fc, 792 src & 0x3f); 793 if (fd) { 794 p[0] = htonl(fd->eui.hi); 795 p[1] = htonl(fd->eui.lo); 796 } else { 797 p[0] = 0; 798 p[1] = 0; 799 } 800 m_tag_prepend(m, mtag); 801 } 802 } 803 804 /* 805 * Trim off the GASP header 806 */ 807 m_adj(m, 3*sizeof(uint32_t)); 808 m->m_pkthdr.rcvif = ifp; 809 firewire_input(ifp, m, src); 810 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 811 } 812 if (STAILQ_FIRST(&xferq->stfree) != NULL) 813 fwip->fd.fc->irx_enable(fwip->fd.fc, fwip->dma_ch); 814} 815 816static __inline void 817fwip_unicast_input_recycle(struct fwip_softc *fwip, struct fw_xfer *xfer) 818{ 819 struct mbuf *m; 820 821 /* 822 * We have finished with a unicast xfer. Allocate a new 823 * cluster and stick it on the back of the input queue. 824 */ 825 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 826 xfer->mbuf = m; 827 xfer->recv.payload = mtod(m, uint32_t *); 828 xfer->recv.pay_len = MCLBYTES; 829 xfer->mbuf = m; 830 STAILQ_INSERT_TAIL(&fwip->fwb.xferlist, xfer, link); 831} 832 833static void 834fwip_unicast_input(struct fw_xfer *xfer) 835{ 836 uint64_t address; 837 struct mbuf *m; 838 struct m_tag *mtag; 839 struct ifnet *ifp; 840 struct fwip_softc *fwip; 841 struct fw_pkt *fp; 842 //struct fw_pkt *sfp; 843 int rtcode; 844 845 fwip = (struct fwip_softc *)xfer->sc; 846 ifp = fwip->fw_softc.fwip_ifp; 847 m = xfer->mbuf; 848 xfer->mbuf = 0; 849 fp = &xfer->recv.hdr; 850 851 /* 852 * Check the fifo address - we only accept addresses of 853 * exactly INET_FIFO. 854 */ 855 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 856 | fp->mode.wreqb.dest_lo; 857 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 858 rtcode = FWRCODE_ER_TYPE; 859 } else if (address != INET_FIFO) { 860 rtcode = FWRCODE_ER_ADDR; 861 } else { 862 rtcode = FWRCODE_COMPLETE; 863 } 864 865 /* 866 * Pick up a new mbuf and stick it on the back of the receive 867 * queue. 868 */ 869 fwip_unicast_input_recycle(fwip, xfer); 870 871 /* 872 * If we've already rejected the packet, give up now. 873 */ 874 if (rtcode != FWRCODE_COMPLETE) { 875 m_freem(m); 876 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 877 return; 878 } 879 880 if (bpf_peers_present(ifp->if_bpf)) { 881 /* 882 * Record the sender ID for possible BPF usage. 883 */ 884 mtag = m_tag_alloc(MTAG_FIREWIRE, MTAG_FIREWIRE_SENDER_EUID, 885 2*sizeof(uint32_t), M_NOWAIT); 886 if (mtag) { 887 /* bpf wants it in network byte order */ 888 struct fw_device *fd; 889 uint32_t *p = (uint32_t *) (mtag + 1); 890 fd = fw_noderesolve_nodeid(fwip->fd.fc, 891 fp->mode.wreqb.src & 0x3f); 892 if (fd) { 893 p[0] = htonl(fd->eui.hi); 894 p[1] = htonl(fd->eui.lo); 895 } else { 896 p[0] = 0; 897 p[1] = 0; 898 } 899 m_tag_prepend(m, mtag); 900 } 901 } 902 903 /* 904 * Hand off to the generic encapsulation code. We don't use 905 * ifp->if_input so that we can pass the source nodeid as an 906 * argument to facilitate link-level fragment reassembly. 907 */ 908 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 909 m->m_pkthdr.rcvif = ifp; 910 firewire_input(ifp, m, fp->mode.wreqb.src); 911 if_inc_counter(ifp, IFCOUNTER_IPACKETS, 1); 912} 913 914static devclass_t fwip_devclass; 915 916static device_method_t fwip_methods[] = { 917 /* device interface */ 918 DEVMETHOD(device_identify, fwip_identify), 919 DEVMETHOD(device_probe, fwip_probe), 920 DEVMETHOD(device_attach, fwip_attach), 921 DEVMETHOD(device_detach, fwip_detach), 922 { 0, 0 } 923}; 924 925static driver_t fwip_driver = { 926 "fwip", 927 fwip_methods, 928 sizeof(struct fwip_softc), 929}; 930 931 932DRIVER_MODULE(fwip, firewire, fwip_driver, fwip_devclass, 0, 0); 933MODULE_VERSION(fwip, 1); 934MODULE_DEPEND(fwip, firewire, 1, 1, 1); 935