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sys/dev/ieee1394/if_fwip.c
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1 /* $NetBSD: if_fwip.c,v 1.31 2022/08/20 19:01:31 thorpej Exp $ */ 2 /*- 3 * Copyright (c) 2004 4 * Doug Rabson 5 * Copyright (c) 2002-2003 6 * Hidetoshi Shimokawa. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * 19 * This product includes software developed by Hidetoshi Shimokawa. 20 * 21 * 4. Neither the name of the author nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $FreeBSD: src/sys/dev/firewire/if_fwip.c,v 1.18 2009/02/09 16:58:18 fjoe Exp $ 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: if_fwip.c,v 1.31 2022/08/20 19:01:31 thorpej Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/bus.h> 45 #include <sys/device.h> 46 #include <sys/errno.h> 47 #include <sys/malloc.h> 48 #include <sys/mbuf.h> 49 #include <sys/mutex.h> 50 #include <sys/sysctl.h> 51 52 #include <net/bpf.h> 53 #include <net/if.h> 54 #include <net/if_ieee1394.h> 55 #include <net/if_types.h> 56 57 #include <dev/ieee1394/firewire.h> 58 #include <dev/ieee1394/firewirereg.h> 59 #include <dev/ieee1394/iec13213.h> 60 #include <dev/ieee1394/if_fwipvar.h> 61 62 /* 63 * We really need a mechanism for allocating regions in the FIFO 64 * address space. We pick a address in the OHCI controller's 'middle' 65 * address space. This means that the controller will automatically 66 * send responses for us, which is fine since we don't have any 67 * important information to put in the response anyway. 68 */ 69 #define INET_FIFO 0xfffe00000000LL 70 71 #define FWIPDEBUG if (fwipdebug) aprint_debug_ifnet 72 #define TX_MAX_QUEUE (FWMAXQUEUE - 1) 73 74 75 struct fw_hwaddr { 76 uint32_t sender_unique_ID_hi; 77 uint32_t sender_unique_ID_lo; 78 uint8_t sender_max_rec; 79 uint8_t sspd; 80 uint16_t sender_unicast_FIFO_hi; 81 uint32_t sender_unicast_FIFO_lo; 82 }; 83 84 85 static int fwipmatch(device_t, cfdata_t, void *); 86 static void fwipattach(device_t, device_t, void *); 87 static int fwipdetach(device_t, int); 88 static int fwipactivate(device_t, enum devact); 89 90 /* network interface */ 91 static void fwip_start(struct ifnet *); 92 static int fwip_ioctl(struct ifnet *, u_long, void *); 93 static int fwip_init(struct ifnet *); 94 static void fwip_stop(struct ifnet *, int); 95 96 static void fwip_post_busreset(void *); 97 static void fwip_output_callback(struct fw_xfer *); 98 static void fwip_async_output(struct fwip_softc *, struct ifnet *); 99 static void fwip_stream_input(struct fw_xferq *); 100 static void fwip_unicast_input(struct fw_xfer *); 101 102 static int fwipdebug = 0; 103 static int broadcast_channel = 0xc0 | 0x1f; /* tag | channel(XXX) */ 104 static int tx_speed = 2; 105 static int rx_queue_len = FWMAXQUEUE; 106 107 /* 108 * Setup sysctl(3) MIB, hw.fwip.* 109 * 110 * TBD condition CTLFLAG_PERMANENT on being a module or not 111 */ 112 SYSCTL_SETUP(sysctl_fwip, "sysctl fwip(4) subtree setup") 113 { 114 int rc, fwip_node_num; 115 const struct sysctlnode *node; 116 117 if ((rc = sysctl_createv(clog, 0, NULL, &node, 118 CTLFLAG_PERMANENT, CTLTYPE_NODE, "fwip", 119 SYSCTL_DESCR("fwip controls"), 120 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL)) != 0) { 121 goto err; 122 } 123 fwip_node_num = node->sysctl_num; 124 125 /* fwip RX queue length */ 126 if ((rc = sysctl_createv(clog, 0, NULL, &node, 127 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 128 "rx_queue_len", SYSCTL_DESCR("Length of the receive queue"), 129 NULL, 0, &rx_queue_len, 130 0, CTL_HW, fwip_node_num, CTL_CREATE, CTL_EOL)) != 0) { 131 goto err; 132 } 133 134 /* fwip RX queue length */ 135 if ((rc = sysctl_createv(clog, 0, NULL, &node, 136 CTLFLAG_PERMANENT | CTLFLAG_READWRITE, CTLTYPE_INT, 137 "if_fwip_debug", SYSCTL_DESCR("fwip driver debug flag"), 138 NULL, 0, &fwipdebug, 139 0, CTL_HW, fwip_node_num, CTL_CREATE, CTL_EOL)) != 0) { 140 goto err; 141 } 142 143 return; 144 145 err: 146 aprint_error("%s: sysctl_createv failed (rc = %d)\n", __func__, rc); 147 } 148 149 150 CFATTACH_DECL_NEW(fwip, sizeof(struct fwip_softc), 151 fwipmatch, fwipattach, fwipdetach, fwipactivate); 152 153 154 static int 155 fwipmatch(device_t parent, cfdata_t cf, void *aux) 156 { 157 struct fw_attach_args *fwa = aux; 158 159 if (strcmp(fwa->name, "fwip") == 0) 160 return 1; 161 return 0; 162 } 163 164 static void 165 fwipattach(device_t parent, device_t self, void *aux) 166 { 167 struct fwip_softc *sc = device_private(self); 168 struct fw_attach_args *fwa = (struct fw_attach_args *)aux; 169 struct fw_hwaddr *hwaddr; 170 struct ifnet *ifp; 171 172 aprint_naive("\n"); 173 aprint_normal(": IP over IEEE1394\n"); 174 175 sc->sc_fd.dev = self; 176 sc->sc_eth.fwip_ifp = &sc->sc_eth.fwcom.fc_if; 177 hwaddr = (struct fw_hwaddr *)&sc->sc_eth.fwcom.ic_hwaddr; 178 179 ifp = sc->sc_eth.fwip_ifp; 180 181 mutex_init(&sc->sc_fwb.fwb_mtx, MUTEX_DEFAULT, IPL_NET); 182 mutex_init(&sc->sc_mtx, MUTEX_DEFAULT, IPL_NET); 183 184 /* XXX */ 185 sc->sc_dma_ch = -1; 186 187 sc->sc_fd.fc = fwa->fc; 188 if (tx_speed < 0) 189 tx_speed = sc->sc_fd.fc->speed; 190 191 sc->sc_fd.post_explore = NULL; 192 sc->sc_fd.post_busreset = fwip_post_busreset; 193 sc->sc_eth.fwip = sc; 194 195 /* 196 * Encode our hardware the way that arp likes it. 197 */ 198 hwaddr->sender_unique_ID_hi = htonl(sc->sc_fd.fc->eui.hi); 199 hwaddr->sender_unique_ID_lo = htonl(sc->sc_fd.fc->eui.lo); 200 hwaddr->sender_max_rec = sc->sc_fd.fc->maxrec; 201 hwaddr->sspd = sc->sc_fd.fc->speed; 202 hwaddr->sender_unicast_FIFO_hi = htons((uint16_t)(INET_FIFO >> 32)); 203 hwaddr->sender_unicast_FIFO_lo = htonl((uint32_t)INET_FIFO); 204 205 /* fill the rest and attach interface */ 206 ifp->if_softc = &sc->sc_eth; 207 208 strlcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); 209 ifp->if_start = fwip_start; 210 ifp->if_ioctl = fwip_ioctl; 211 ifp->if_init = fwip_init; 212 ifp->if_stop = fwip_stop; 213 ifp->if_flags = (IFF_BROADCAST|IFF_SIMPLEX|IFF_MULTICAST); 214 IFQ_SET_READY(&ifp->if_snd); 215 IFQ_SET_MAXLEN(&ifp->if_snd, TX_MAX_QUEUE); 216 217 if_attach(ifp); 218 ieee1394_ifattach(ifp, (const struct ieee1394_hwaddr *)hwaddr); 219 220 if (!pmf_device_register(self, NULL, NULL)) 221 aprint_error_dev(self, "couldn't establish power handler\n"); 222 else 223 pmf_class_network_register(self, ifp); 224 225 FWIPDEBUG(ifp, "interface created\n"); 226 return; 227 } 228 229 static int 230 fwipdetach(device_t self, int flags) 231 { 232 struct fwip_softc *sc = device_private(self); 233 struct ifnet *ifp = sc->sc_eth.fwip_ifp; 234 235 fwip_stop(sc->sc_eth.fwip_ifp, 1); 236 ieee1394_ifdetach(ifp); 237 if_detach(ifp); 238 mutex_destroy(&sc->sc_mtx); 239 mutex_destroy(&sc->sc_fwb.fwb_mtx); 240 return 0; 241 } 242 243 static int 244 fwipactivate(device_t self, enum devact act) 245 { 246 struct fwip_softc *sc = device_private(self); 247 248 switch (act) { 249 case DVACT_DEACTIVATE: 250 if_deactivate(sc->sc_eth.fwip_ifp); 251 return 0; 252 default: 253 return EOPNOTSUPP; 254 } 255 } 256 257 static void 258 fwip_start(struct ifnet *ifp) 259 { 260 struct fwip_softc *sc = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 261 262 FWIPDEBUG(ifp, "starting\n"); 263 264 if (sc->sc_dma_ch < 0) { 265 struct mbuf *m = NULL; 266 267 FWIPDEBUG(ifp, "not ready\n"); 268 269 do { 270 IF_DEQUEUE(&ifp->if_snd, m); 271 if (m != NULL) 272 m_freem(m); 273 if_statinc(ifp, if_oerrors); 274 } while (m != NULL); 275 276 return; 277 } 278 279 ifp->if_flags |= IFF_OACTIVE; 280 281 if (ifp->if_snd.ifq_len != 0) 282 fwip_async_output(sc, ifp); 283 284 ifp->if_flags &= ~IFF_OACTIVE; 285 } 286 287 static int 288 fwip_ioctl(struct ifnet *ifp, u_long cmd, void *data) 289 { 290 int s, error = 0; 291 292 s = splnet(); 293 294 switch (cmd) { 295 case SIOCSIFFLAGS: 296 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 297 break; 298 switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { 299 case IFF_RUNNING: 300 fwip_stop(ifp, 0); 301 break; 302 case IFF_UP: 303 fwip_init(ifp); 304 break; 305 default: 306 break; 307 } 308 break; 309 310 case SIOCADDMULTI: 311 case SIOCDELMULTI: 312 break; 313 314 default: 315 error = ieee1394_ioctl(ifp, cmd, data); 316 if (error == ENETRESET) 317 error = 0; 318 break; 319 } 320 321 splx(s); 322 323 return error; 324 } 325 326 static int 327 fwip_init(struct ifnet *ifp) 328 { 329 struct fwip_softc *sc = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 330 struct firewire_comm *fc; 331 struct fw_xferq *xferq; 332 struct fw_xfer *xfer; 333 struct mbuf *m; 334 int i; 335 336 FWIPDEBUG(ifp, "initializing\n"); 337 338 fc = sc->sc_fd.fc; 339 if (sc->sc_dma_ch < 0) { 340 sc->sc_dma_ch = fw_open_isodma(fc, /* tx */0); 341 if (sc->sc_dma_ch < 0) 342 return ENXIO; 343 xferq = fc->ir[sc->sc_dma_ch]; 344 xferq->flag |= 345 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_STREAM; 346 xferq->flag &= ~0xff; 347 xferq->flag |= broadcast_channel & 0xff; 348 /* register fwip_input handler */ 349 xferq->sc = (void *) sc; 350 xferq->hand = fwip_stream_input; 351 xferq->bnchunk = rx_queue_len; 352 xferq->bnpacket = 1; 353 xferq->psize = MCLBYTES; 354 xferq->queued = 0; 355 xferq->buf = NULL; 356 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 357 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 358 M_FW, M_WAITOK); 359 if (xferq->bulkxfer == NULL) { 360 aprint_error_ifnet(ifp, "if_fwip: malloc failed\n"); 361 return ENOMEM; 362 } 363 STAILQ_INIT(&xferq->stvalid); 364 STAILQ_INIT(&xferq->stfree); 365 STAILQ_INIT(&xferq->stdma); 366 xferq->stproc = NULL; 367 for (i = 0; i < xferq->bnchunk; i++) { 368 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 369 xferq->bulkxfer[i].mbuf = m; 370 if (m != NULL) { 371 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 372 STAILQ_INSERT_TAIL(&xferq->stfree, 373 &xferq->bulkxfer[i], link); 374 } else 375 aprint_error_ifnet(ifp, 376 "fwip_as_input: m_getcl failed\n"); 377 } 378 379 sc->sc_fwb.start = INET_FIFO; 380 sc->sc_fwb.end = INET_FIFO + 16384; /* S3200 packet size */ 381 382 /* pre-allocate xfer */ 383 STAILQ_INIT(&sc->sc_fwb.xferlist); 384 for (i = 0; i < rx_queue_len; i++) { 385 xfer = fw_xfer_alloc(M_FW); 386 if (xfer == NULL) 387 break; 388 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 389 xfer->recv.payload = mtod(m, uint32_t *); 390 xfer->recv.pay_len = MCLBYTES; 391 xfer->hand = fwip_unicast_input; 392 xfer->fc = fc; 393 xfer->sc = (void *) sc; 394 xfer->mbuf = m; 395 STAILQ_INSERT_TAIL(&sc->sc_fwb.xferlist, xfer, link); 396 } 397 fw_bindadd(fc, &sc->sc_fwb); 398 399 STAILQ_INIT(&sc->sc_xferlist); 400 for (i = 0; i < TX_MAX_QUEUE; i++) { 401 xfer = fw_xfer_alloc(M_FW); 402 if (xfer == NULL) 403 break; 404 xfer->send.spd = tx_speed; 405 xfer->fc = sc->sc_fd.fc; 406 xfer->sc = (void *)sc; 407 xfer->hand = fwip_output_callback; 408 STAILQ_INSERT_TAIL(&sc->sc_xferlist, xfer, link); 409 } 410 } else 411 xferq = fc->ir[sc->sc_dma_ch]; 412 413 sc->sc_last_dest.hi = 0; 414 sc->sc_last_dest.lo = 0; 415 416 /* start dma */ 417 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 418 fc->irx_enable(fc, sc->sc_dma_ch); 419 420 ifp->if_flags |= IFF_RUNNING; 421 ifp->if_flags &= ~IFF_OACTIVE; 422 423 #if 0 424 /* attempt to start output */ 425 fwip_start(ifp); 426 #endif 427 return 0; 428 } 429 430 static void 431 fwip_stop(struct ifnet *ifp, int disable) 432 { 433 struct fwip_softc *sc = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 434 struct firewire_comm *fc = sc->sc_fd.fc; 435 struct fw_xferq *xferq; 436 struct fw_xfer *xfer, *next; 437 int i; 438 439 if (sc->sc_dma_ch >= 0) { 440 xferq = fc->ir[sc->sc_dma_ch]; 441 442 if (xferq->flag & FWXFERQ_RUNNING) 443 fc->irx_disable(fc, sc->sc_dma_ch); 444 xferq->flag &= 445 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 446 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 447 xferq->hand = NULL; 448 449 for (i = 0; i < xferq->bnchunk; i++) 450 m_freem(xferq->bulkxfer[i].mbuf); 451 free(xferq->bulkxfer, M_FW); 452 453 fw_bindremove(fc, &sc->sc_fwb); 454 for (xfer = STAILQ_FIRST(&sc->sc_fwb.xferlist); xfer != NULL; 455 xfer = next) { 456 next = STAILQ_NEXT(xfer, link); 457 fw_xfer_free(xfer); 458 } 459 460 for (xfer = STAILQ_FIRST(&sc->sc_xferlist); xfer != NULL; 461 xfer = next) { 462 next = STAILQ_NEXT(xfer, link); 463 fw_xfer_free(xfer); 464 } 465 466 xferq->bulkxfer = NULL; 467 sc->sc_dma_ch = -1; 468 } 469 470 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 471 } 472 473 static void 474 fwip_post_busreset(void *arg) 475 { 476 struct fwip_softc *sc = arg; 477 struct crom_src *src; 478 struct crom_chunk *root; 479 480 src = sc->sc_fd.fc->crom_src; 481 root = sc->sc_fd.fc->crom_root; 482 483 /* RFC2734 IPv4 over IEEE1394 */ 484 memset(&sc->sc_unit4, 0, sizeof(struct crom_chunk)); 485 crom_add_chunk(src, root, &sc->sc_unit4, CROM_UDIR); 486 crom_add_entry(&sc->sc_unit4, CSRKEY_SPEC, CSRVAL_IETF); 487 crom_add_simple_text(src, &sc->sc_unit4, &sc->sc_spec4, "IANA"); 488 crom_add_entry(&sc->sc_unit4, CSRKEY_VER, 1); 489 crom_add_simple_text(src, &sc->sc_unit4, &sc->sc_ver4, "IPv4"); 490 491 /* RFC3146 IPv6 over IEEE1394 */ 492 memset(&sc->sc_unit6, 0, sizeof(struct crom_chunk)); 493 crom_add_chunk(src, root, &sc->sc_unit6, CROM_UDIR); 494 crom_add_entry(&sc->sc_unit6, CSRKEY_SPEC, CSRVAL_IETF); 495 crom_add_simple_text(src, &sc->sc_unit6, &sc->sc_spec6, "IANA"); 496 crom_add_entry(&sc->sc_unit6, CSRKEY_VER, 2); 497 crom_add_simple_text(src, &sc->sc_unit6, &sc->sc_ver6, "IPv6"); 498 499 sc->sc_last_dest.hi = 0; 500 sc->sc_last_dest.lo = 0; 501 ieee1394_drain(sc->sc_eth.fwip_ifp); 502 } 503 504 static void 505 fwip_output_callback(struct fw_xfer *xfer) 506 { 507 struct fwip_softc *sc = (struct fwip_softc *)xfer->sc; 508 struct ifnet *ifp; 509 510 ifp = sc->sc_eth.fwip_ifp; 511 /* XXX error check */ 512 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 513 if (xfer->resp != 0) 514 if_statinc(ifp, if_oerrors); 515 516 m_freem(xfer->mbuf); 517 fw_xfer_unload(xfer); 518 519 mutex_enter(&sc->sc_mtx); 520 STAILQ_INSERT_TAIL(&sc->sc_xferlist, xfer, link); 521 mutex_exit(&sc->sc_mtx); 522 523 /* for queue full */ 524 if (ifp->if_snd.ifq_head != NULL) 525 fwip_start(ifp); 526 } 527 528 /* Async. stream output */ 529 static void 530 fwip_async_output(struct fwip_softc *sc, struct ifnet *ifp) 531 { 532 struct firewire_comm *fc = sc->sc_fd.fc; 533 struct mbuf *m; 534 struct m_tag *mtag; 535 struct fw_hwaddr *destfw; 536 struct fw_xfer *xfer; 537 struct fw_xferq *xferq; 538 struct fw_pkt *fp; 539 uint16_t nodeid; 540 int error; 541 int i = 0; 542 543 xfer = NULL; 544 xferq = fc->atq; 545 while ((xferq->queued < xferq->maxq - 1) && 546 (ifp->if_snd.ifq_head != NULL)) { 547 mutex_enter(&sc->sc_mtx); 548 if (STAILQ_EMPTY(&sc->sc_xferlist)) { 549 mutex_exit(&sc->sc_mtx); 550 #if 0 551 aprint_normal("if_fwip: lack of xfer\n"); 552 #endif 553 break; 554 } 555 IF_POLL(&ifp->if_snd, m); 556 if (m == NULL) { 557 mutex_exit(&sc->sc_mtx); 558 break; 559 } 560 xfer = STAILQ_FIRST(&sc->sc_xferlist); 561 STAILQ_REMOVE_HEAD(&sc->sc_xferlist, link); 562 mutex_exit(&sc->sc_mtx); 563 564 /* 565 * Dig out the link-level address which 566 * firewire_output got via arp or neighbour 567 * discovery. If we don't have a link-level address, 568 * just stick the thing on the broadcast channel. 569 */ 570 mtag = m_tag_find(m, MTAG_FIREWIRE_HWADDR); 571 if (mtag == NULL) 572 destfw = 0; 573 else 574 destfw = (struct fw_hwaddr *) (mtag + 1); 575 576 /* 577 * Put the mbuf in the xfer early in case we hit an 578 * error case below - fwip_output_callback will free 579 * the mbuf. 580 */ 581 xfer->mbuf = m; 582 583 /* 584 * We use the arp result (if any) to add a suitable firewire 585 * packet header before handing off to the bus. 586 */ 587 fp = &xfer->send.hdr; 588 nodeid = FWLOCALBUS | fc->nodeid; 589 if ((m->m_flags & M_BCAST) || !destfw) { 590 /* 591 * Broadcast packets are sent as GASP packets with 592 * specifier ID 0x00005e, version 1 on the broadcast 593 * channel. To be conservative, we send at the 594 * slowest possible speed. 595 */ 596 uint32_t *p; 597 598 M_PREPEND(m, 2 * sizeof(uint32_t), M_DONTWAIT); 599 p = mtod(m, uint32_t *); 600 fp->mode.stream.len = m->m_pkthdr.len; 601 fp->mode.stream.chtag = broadcast_channel; 602 fp->mode.stream.tcode = FWTCODE_STREAM; 603 fp->mode.stream.sy = 0; 604 xfer->send.spd = 0; 605 p[0] = htonl(nodeid << 16); 606 p[1] = htonl((0x5e << 24) | 1); 607 } else { 608 /* 609 * Unicast packets are sent as block writes to the 610 * target's unicast fifo address. If we can't 611 * find the node address, we just give up. We 612 * could broadcast it but that might overflow 613 * the packet size limitations due to the 614 * extra GASP header. Note: the hardware 615 * address is stored in network byte order to 616 * make life easier for ARP. 617 */ 618 struct fw_device *fd; 619 struct fw_eui64 eui; 620 621 eui.hi = ntohl(destfw->sender_unique_ID_hi); 622 eui.lo = ntohl(destfw->sender_unique_ID_lo); 623 if (sc->sc_last_dest.hi != eui.hi || 624 sc->sc_last_dest.lo != eui.lo) { 625 fd = fw_noderesolve_eui64(fc, &eui); 626 if (!fd) { 627 /* error */ 628 if_statinc(ifp, if_oerrors); 629 /* XXX set error code */ 630 fwip_output_callback(xfer); 631 continue; 632 633 } 634 sc->sc_last_hdr.mode.wreqb.dst = 635 FWLOCALBUS | fd->dst; 636 sc->sc_last_hdr.mode.wreqb.tlrt = 0; 637 sc->sc_last_hdr.mode.wreqb.tcode = 638 FWTCODE_WREQB; 639 sc->sc_last_hdr.mode.wreqb.pri = 0; 640 sc->sc_last_hdr.mode.wreqb.src = nodeid; 641 sc->sc_last_hdr.mode.wreqb.dest_hi = 642 ntohs(destfw->sender_unicast_FIFO_hi); 643 sc->sc_last_hdr.mode.wreqb.dest_lo = 644 ntohl(destfw->sender_unicast_FIFO_lo); 645 sc->sc_last_hdr.mode.wreqb.extcode = 0; 646 sc->sc_last_dest = eui; 647 } 648 649 fp->mode.wreqb = sc->sc_last_hdr.mode.wreqb; 650 fp->mode.wreqb.len = m->m_pkthdr.len; 651 xfer->send.spd = uimin(destfw->sspd, fc->speed); 652 } 653 654 xfer->send.pay_len = m->m_pkthdr.len; 655 656 error = fw_asyreq(fc, -1, xfer); 657 if (error == EAGAIN) { 658 /* 659 * We ran out of tlabels - requeue the packet 660 * for later transmission. 661 */ 662 xfer->mbuf = 0; 663 mutex_enter(&sc->sc_mtx); 664 STAILQ_INSERT_TAIL(&sc->sc_xferlist, xfer, link); 665 mutex_exit(&sc->sc_mtx); 666 break; 667 } 668 IF_DEQUEUE(&ifp->if_snd, m); 669 if (error) { 670 /* error */ 671 if_statinc(ifp, if_oerrors); 672 /* XXX set error code */ 673 fwip_output_callback(xfer); 674 continue; 675 } else { 676 if_statinc(ifp, if_opackets); 677 i++; 678 } 679 } 680 #if 0 681 if (i > 1) 682 aprint_normal("%d queued\n", i); 683 #endif 684 if (i > 0) 685 xferq->start(fc); 686 } 687 688 /* Async. stream output */ 689 static void 690 fwip_stream_input(struct fw_xferq *xferq) 691 { 692 struct mbuf *m, *m0; 693 struct m_tag *mtag; 694 struct ifnet *ifp; 695 struct fwip_softc *sc; 696 struct fw_bulkxfer *sxfer; 697 struct fw_pkt *fp; 698 uint16_t src; 699 uint32_t *p; 700 701 sc = (struct fwip_softc *)xferq->sc; 702 ifp = sc->sc_eth.fwip_ifp; 703 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 704 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 705 fp = mtod(sxfer->mbuf, struct fw_pkt *); 706 if (sc->sc_fd.fc->irx_post != NULL) 707 sc->sc_fd.fc->irx_post(sc->sc_fd.fc, fp->mode.ld); 708 m = sxfer->mbuf; 709 710 /* insert new rbuf */ 711 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 712 if (m0 != NULL) { 713 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 714 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 715 } else 716 aprint_error_ifnet(ifp, 717 "fwip_as_input: m_getcl failed\n"); 718 719 /* 720 * We must have a GASP header - leave the 721 * encapsulation sanity checks to the generic 722 * code. Remeber that we also have the firewire async 723 * stream header even though that isn't accounted for 724 * in mode.stream.len. 725 */ 726 if (sxfer->resp != 0 || 727 fp->mode.stream.len < 2 * sizeof(uint32_t)) { 728 m_freem(m); 729 if_statinc(ifp, if_ierrors); 730 continue; 731 } 732 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 733 + sizeof(fp->mode.stream); 734 735 /* 736 * If we received the packet on the broadcast channel, 737 * mark it as broadcast, otherwise we assume it must 738 * be multicast. 739 */ 740 if (fp->mode.stream.chtag == broadcast_channel) 741 m->m_flags |= M_BCAST; 742 else 743 m->m_flags |= M_MCAST; 744 745 /* 746 * Make sure we recognise the GASP specifier and 747 * version. 748 */ 749 p = mtod(m, uint32_t *); 750 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 751 0x00005e || 752 (ntohl(p[2]) & 0xffffff) != 1) { 753 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 754 ntohl(p[1]), ntohl(p[2])); 755 m_freem(m); 756 if_statinc(ifp, if_ierrors); 757 continue; 758 } 759 760 /* 761 * Record the sender ID for possible BPF usage. 762 */ 763 src = ntohl(p[1]) >> 16; 764 if (ifp->if_bpf) { 765 mtag = m_tag_get(MTAG_FIREWIRE_SENDER_EUID, 766 2 * sizeof(uint32_t), M_NOWAIT); 767 if (mtag) { 768 /* bpf wants it in network byte order */ 769 struct fw_device *fd; 770 uint32_t *p2 = (uint32_t *) (mtag + 1); 771 772 fd = fw_noderesolve_nodeid(sc->sc_fd.fc, 773 src & 0x3f); 774 if (fd) { 775 p2[0] = htonl(fd->eui.hi); 776 p2[1] = htonl(fd->eui.lo); 777 } else { 778 p2[0] = 0; 779 p2[1] = 0; 780 } 781 m_tag_prepend(m, mtag); 782 } 783 } 784 785 /* 786 * Trim off the GASP header 787 */ 788 m_adj(m, 3*sizeof(uint32_t)); 789 m_set_rcvif(m, ifp); 790 ieee1394_input(ifp, m, src); 791 if_statinc(ifp, if_ipackets); 792 } 793 if (STAILQ_FIRST(&xferq->stfree) != NULL) 794 sc->sc_fd.fc->irx_enable(sc->sc_fd.fc, sc->sc_dma_ch); 795 } 796 797 static inline void 798 fwip_unicast_input_recycle(struct fwip_softc *sc, struct fw_xfer *xfer) 799 { 800 struct mbuf *m; 801 802 /* 803 * We have finished with a unicast xfer. Allocate a new 804 * cluster and stick it on the back of the input queue. 805 */ 806 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 807 if (m == NULL) 808 aprint_error_dev(sc->sc_fd.dev, 809 "fwip_unicast_input_recycle: m_getcl failed\n"); 810 xfer->recv.payload = mtod(m, uint32_t *); 811 xfer->recv.pay_len = MCLBYTES; 812 xfer->mbuf = m; 813 mutex_enter(&sc->sc_fwb.fwb_mtx); 814 STAILQ_INSERT_TAIL(&sc->sc_fwb.xferlist, xfer, link); 815 mutex_exit(&sc->sc_fwb.fwb_mtx); 816 } 817 818 static void 819 fwip_unicast_input(struct fw_xfer *xfer) 820 { 821 uint64_t address; 822 struct mbuf *m; 823 struct m_tag *mtag; 824 struct ifnet *ifp; 825 struct fwip_softc *sc; 826 struct fw_pkt *fp; 827 int rtcode; 828 829 sc = (struct fwip_softc *)xfer->sc; 830 ifp = sc->sc_eth.fwip_ifp; 831 m = xfer->mbuf; 832 xfer->mbuf = 0; 833 fp = &xfer->recv.hdr; 834 835 /* 836 * Check the fifo address - we only accept addresses of 837 * exactly INET_FIFO. 838 */ 839 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 840 | fp->mode.wreqb.dest_lo; 841 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 842 rtcode = FWRCODE_ER_TYPE; 843 } else if (address != INET_FIFO) { 844 rtcode = FWRCODE_ER_ADDR; 845 } else { 846 rtcode = FWRCODE_COMPLETE; 847 } 848 849 /* 850 * Pick up a new mbuf and stick it on the back of the receive 851 * queue. 852 */ 853 fwip_unicast_input_recycle(sc, xfer); 854 855 /* 856 * If we've already rejected the packet, give up now. 857 */ 858 if (rtcode != FWRCODE_COMPLETE) { 859 m_freem(m); 860 if_statinc(ifp, if_ierrors); 861 return; 862 } 863 864 if (ifp->if_bpf) { 865 /* 866 * Record the sender ID for possible BPF usage. 867 */ 868 mtag = m_tag_get(MTAG_FIREWIRE_SENDER_EUID, 869 2 * sizeof(uint32_t), M_NOWAIT); 870 if (mtag) { 871 /* bpf wants it in network byte order */ 872 struct fw_device *fd; 873 uint32_t *p = (uint32_t *) (mtag + 1); 874 875 fd = fw_noderesolve_nodeid(sc->sc_fd.fc, 876 fp->mode.wreqb.src & 0x3f); 877 if (fd) { 878 p[0] = htonl(fd->eui.hi); 879 p[1] = htonl(fd->eui.lo); 880 } else { 881 p[0] = 0; 882 p[1] = 0; 883 } 884 m_tag_prepend(m, mtag); 885 } 886 } 887 888 /* 889 * Hand off to the generic encapsulation code. We don't use 890 * ifp->if_input so that we can pass the source nodeid as an 891 * argument to facilitate link-level fragment reassembly. 892 */ 893 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 894 m_set_rcvif(m, ifp); 895 ieee1394_input(ifp, m, fp->mode.wreqb.src); 896 if_statinc(ifp, if_ipackets); 897 }
Cache object: dcdbdfd2a5469c5bb5be4e4a0b0c2335
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