1 /* $NetBSD: if_fwip.c,v 1.32 2024/07/05 04:31:51 rin 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 1.32 2024/07/05 04:31:51 rin 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 m_freem(m); 272 if_statinc(ifp, if_oerrors); 273 } while (m != NULL); 274 275 return; 276 } 277 278 ifp->if_flags |= IFF_OACTIVE; 279 280 if (ifp->if_snd.ifq_len != 0) 281 fwip_async_output(sc, ifp); 282 283 ifp->if_flags &= ~IFF_OACTIVE; 284 } 285 286 static int 287 fwip_ioctl(struct ifnet *ifp, u_long cmd, void *data) 288 { 289 int s, error = 0; 290 291 s = splnet(); 292 293 switch (cmd) { 294 case SIOCSIFFLAGS: 295 if ((error = ifioctl_common(ifp, cmd, data)) != 0) 296 break; 297 switch (ifp->if_flags & (IFF_UP | IFF_RUNNING)) { 298 case IFF_RUNNING: 299 fwip_stop(ifp, 0); 300 break; 301 case IFF_UP: 302 fwip_init(ifp); 303 break; 304 default: 305 break; 306 } 307 break; 308 309 case SIOCADDMULTI: 310 case SIOCDELMULTI: 311 break; 312 313 default: 314 error = ieee1394_ioctl(ifp, cmd, data); 315 if (error == ENETRESET) 316 error = 0; 317 break; 318 } 319 320 splx(s); 321 322 return error; 323 } 324 325 static int 326 fwip_init(struct ifnet *ifp) 327 { 328 struct fwip_softc *sc = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 329 struct firewire_comm *fc; 330 struct fw_xferq *xferq; 331 struct fw_xfer *xfer; 332 struct mbuf *m; 333 int i; 334 335 FWIPDEBUG(ifp, "initializing\n"); 336 337 fc = sc->sc_fd.fc; 338 if (sc->sc_dma_ch < 0) { 339 sc->sc_dma_ch = fw_open_isodma(fc, /* tx */0); 340 if (sc->sc_dma_ch < 0) 341 return ENXIO; 342 xferq = fc->ir[sc->sc_dma_ch]; 343 xferq->flag |= 344 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_STREAM; 345 xferq->flag &= ~0xff; 346 xferq->flag |= broadcast_channel & 0xff; 347 /* register fwip_input handler */ 348 xferq->sc = (void *) sc; 349 xferq->hand = fwip_stream_input; 350 xferq->bnchunk = rx_queue_len; 351 xferq->bnpacket = 1; 352 xferq->psize = MCLBYTES; 353 xferq->queued = 0; 354 xferq->buf = NULL; 355 xferq->bulkxfer = (struct fw_bulkxfer *) malloc( 356 sizeof(struct fw_bulkxfer) * xferq->bnchunk, 357 M_FW, M_WAITOK); 358 if (xferq->bulkxfer == NULL) { 359 aprint_error_ifnet(ifp, "if_fwip: malloc failed\n"); 360 return ENOMEM; 361 } 362 STAILQ_INIT(&xferq->stvalid); 363 STAILQ_INIT(&xferq->stfree); 364 STAILQ_INIT(&xferq->stdma); 365 xferq->stproc = NULL; 366 for (i = 0; i < xferq->bnchunk; i++) { 367 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 368 xferq->bulkxfer[i].mbuf = m; 369 if (m != NULL) { 370 m->m_len = m->m_pkthdr.len = m->m_ext.ext_size; 371 STAILQ_INSERT_TAIL(&xferq->stfree, 372 &xferq->bulkxfer[i], link); 373 } else 374 aprint_error_ifnet(ifp, 375 "fwip_as_input: m_getcl failed\n"); 376 } 377 378 sc->sc_fwb.start = INET_FIFO; 379 sc->sc_fwb.end = INET_FIFO + 16384; /* S3200 packet size */ 380 381 /* pre-allocate xfer */ 382 STAILQ_INIT(&sc->sc_fwb.xferlist); 383 for (i = 0; i < rx_queue_len; i++) { 384 xfer = fw_xfer_alloc(M_FW); 385 if (xfer == NULL) 386 break; 387 m = m_getcl(M_WAITOK, MT_DATA, M_PKTHDR); 388 xfer->recv.payload = mtod(m, uint32_t *); 389 xfer->recv.pay_len = MCLBYTES; 390 xfer->hand = fwip_unicast_input; 391 xfer->fc = fc; 392 xfer->sc = (void *) sc; 393 xfer->mbuf = m; 394 STAILQ_INSERT_TAIL(&sc->sc_fwb.xferlist, xfer, link); 395 } 396 fw_bindadd(fc, &sc->sc_fwb); 397 398 STAILQ_INIT(&sc->sc_xferlist); 399 for (i = 0; i < TX_MAX_QUEUE; i++) { 400 xfer = fw_xfer_alloc(M_FW); 401 if (xfer == NULL) 402 break; 403 xfer->send.spd = tx_speed; 404 xfer->fc = sc->sc_fd.fc; 405 xfer->sc = (void *)sc; 406 xfer->hand = fwip_output_callback; 407 STAILQ_INSERT_TAIL(&sc->sc_xferlist, xfer, link); 408 } 409 } else 410 xferq = fc->ir[sc->sc_dma_ch]; 411 412 sc->sc_last_dest.hi = 0; 413 sc->sc_last_dest.lo = 0; 414 415 /* start dma */ 416 if ((xferq->flag & FWXFERQ_RUNNING) == 0) 417 fc->irx_enable(fc, sc->sc_dma_ch); 418 419 ifp->if_flags |= IFF_RUNNING; 420 ifp->if_flags &= ~IFF_OACTIVE; 421 422 #if 0 423 /* attempt to start output */ 424 fwip_start(ifp); 425 #endif 426 return 0; 427 } 428 429 static void 430 fwip_stop(struct ifnet *ifp, int disable) 431 { 432 struct fwip_softc *sc = ((struct fwip_eth_softc *)ifp->if_softc)->fwip; 433 struct firewire_comm *fc = sc->sc_fd.fc; 434 struct fw_xferq *xferq; 435 struct fw_xfer *xfer, *next; 436 int i; 437 438 if (sc->sc_dma_ch >= 0) { 439 xferq = fc->ir[sc->sc_dma_ch]; 440 441 if (xferq->flag & FWXFERQ_RUNNING) 442 fc->irx_disable(fc, sc->sc_dma_ch); 443 xferq->flag &= 444 ~(FWXFERQ_MODEMASK | FWXFERQ_OPEN | FWXFERQ_STREAM | 445 FWXFERQ_EXTBUF | FWXFERQ_HANDLER | FWXFERQ_CHTAGMASK); 446 xferq->hand = NULL; 447 448 for (i = 0; i < xferq->bnchunk; i++) 449 m_freem(xferq->bulkxfer[i].mbuf); 450 free(xferq->bulkxfer, M_FW); 451 452 fw_bindremove(fc, &sc->sc_fwb); 453 for (xfer = STAILQ_FIRST(&sc->sc_fwb.xferlist); xfer != NULL; 454 xfer = next) { 455 next = STAILQ_NEXT(xfer, link); 456 fw_xfer_free(xfer); 457 } 458 459 for (xfer = STAILQ_FIRST(&sc->sc_xferlist); xfer != NULL; 460 xfer = next) { 461 next = STAILQ_NEXT(xfer, link); 462 fw_xfer_free(xfer); 463 } 464 465 xferq->bulkxfer = NULL; 466 sc->sc_dma_ch = -1; 467 } 468 469 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 470 } 471 472 static void 473 fwip_post_busreset(void *arg) 474 { 475 struct fwip_softc *sc = arg; 476 struct crom_src *src; 477 struct crom_chunk *root; 478 479 src = sc->sc_fd.fc->crom_src; 480 root = sc->sc_fd.fc->crom_root; 481 482 /* RFC2734 IPv4 over IEEE1394 */ 483 memset(&sc->sc_unit4, 0, sizeof(struct crom_chunk)); 484 crom_add_chunk(src, root, &sc->sc_unit4, CROM_UDIR); 485 crom_add_entry(&sc->sc_unit4, CSRKEY_SPEC, CSRVAL_IETF); 486 crom_add_simple_text(src, &sc->sc_unit4, &sc->sc_spec4, "IANA"); 487 crom_add_entry(&sc->sc_unit4, CSRKEY_VER, 1); 488 crom_add_simple_text(src, &sc->sc_unit4, &sc->sc_ver4, "IPv4"); 489 490 /* RFC3146 IPv6 over IEEE1394 */ 491 memset(&sc->sc_unit6, 0, sizeof(struct crom_chunk)); 492 crom_add_chunk(src, root, &sc->sc_unit6, CROM_UDIR); 493 crom_add_entry(&sc->sc_unit6, CSRKEY_SPEC, CSRVAL_IETF); 494 crom_add_simple_text(src, &sc->sc_unit6, &sc->sc_spec6, "IANA"); 495 crom_add_entry(&sc->sc_unit6, CSRKEY_VER, 2); 496 crom_add_simple_text(src, &sc->sc_unit6, &sc->sc_ver6, "IPv6"); 497 498 sc->sc_last_dest.hi = 0; 499 sc->sc_last_dest.lo = 0; 500 ieee1394_drain(sc->sc_eth.fwip_ifp); 501 } 502 503 static void 504 fwip_output_callback(struct fw_xfer *xfer) 505 { 506 struct fwip_softc *sc = (struct fwip_softc *)xfer->sc; 507 struct ifnet *ifp; 508 509 ifp = sc->sc_eth.fwip_ifp; 510 /* XXX error check */ 511 FWIPDEBUG(ifp, "resp = %d\n", xfer->resp); 512 if (xfer->resp != 0) 513 if_statinc(ifp, if_oerrors); 514 515 m_freem(xfer->mbuf); 516 fw_xfer_unload(xfer); 517 518 mutex_enter(&sc->sc_mtx); 519 STAILQ_INSERT_TAIL(&sc->sc_xferlist, xfer, link); 520 mutex_exit(&sc->sc_mtx); 521 522 /* for queue full */ 523 if (ifp->if_snd.ifq_head != NULL) 524 fwip_start(ifp); 525 } 526 527 /* Async. stream output */ 528 static void 529 fwip_async_output(struct fwip_softc *sc, struct ifnet *ifp) 530 { 531 struct firewire_comm *fc = sc->sc_fd.fc; 532 struct mbuf *m; 533 struct m_tag *mtag; 534 struct fw_hwaddr *destfw; 535 struct fw_xfer *xfer; 536 struct fw_xferq *xferq; 537 struct fw_pkt *fp; 538 uint16_t nodeid; 539 int error; 540 int i = 0; 541 542 xfer = NULL; 543 xferq = fc->atq; 544 while ((xferq->queued < xferq->maxq - 1) && 545 (ifp->if_snd.ifq_head != NULL)) { 546 mutex_enter(&sc->sc_mtx); 547 if (STAILQ_EMPTY(&sc->sc_xferlist)) { 548 mutex_exit(&sc->sc_mtx); 549 #if 0 550 aprint_normal("if_fwip: lack of xfer\n"); 551 #endif 552 break; 553 } 554 IF_POLL(&ifp->if_snd, m); 555 if (m == NULL) { 556 mutex_exit(&sc->sc_mtx); 557 break; 558 } 559 xfer = STAILQ_FIRST(&sc->sc_xferlist); 560 STAILQ_REMOVE_HEAD(&sc->sc_xferlist, link); 561 mutex_exit(&sc->sc_mtx); 562 563 /* 564 * Dig out the link-level address which 565 * firewire_output got via arp or neighbour 566 * discovery. If we don't have a link-level address, 567 * just stick the thing on the broadcast channel. 568 */ 569 mtag = m_tag_find(m, MTAG_FIREWIRE_HWADDR); 570 if (mtag == NULL) 571 destfw = 0; 572 else 573 destfw = (struct fw_hwaddr *) (mtag + 1); 574 575 /* 576 * Put the mbuf in the xfer early in case we hit an 577 * error case below - fwip_output_callback will free 578 * the mbuf. 579 */ 580 xfer->mbuf = m; 581 582 /* 583 * We use the arp result (if any) to add a suitable firewire 584 * packet header before handing off to the bus. 585 */ 586 fp = &xfer->send.hdr; 587 nodeid = FWLOCALBUS | fc->nodeid; 588 if ((m->m_flags & M_BCAST) || !destfw) { 589 /* 590 * Broadcast packets are sent as GASP packets with 591 * specifier ID 0x00005e, version 1 on the broadcast 592 * channel. To be conservative, we send at the 593 * slowest possible speed. 594 */ 595 uint32_t *p; 596 597 M_PREPEND(m, 2 * sizeof(uint32_t), M_DONTWAIT); 598 p = mtod(m, uint32_t *); 599 fp->mode.stream.len = m->m_pkthdr.len; 600 fp->mode.stream.chtag = broadcast_channel; 601 fp->mode.stream.tcode = FWTCODE_STREAM; 602 fp->mode.stream.sy = 0; 603 xfer->send.spd = 0; 604 p[0] = htonl(nodeid << 16); 605 p[1] = htonl((0x5e << 24) | 1); 606 } else { 607 /* 608 * Unicast packets are sent as block writes to the 609 * target's unicast fifo address. If we can't 610 * find the node address, we just give up. We 611 * could broadcast it but that might overflow 612 * the packet size limitations due to the 613 * extra GASP header. Note: the hardware 614 * address is stored in network byte order to 615 * make life easier for ARP. 616 */ 617 struct fw_device *fd; 618 struct fw_eui64 eui; 619 620 eui.hi = ntohl(destfw->sender_unique_ID_hi); 621 eui.lo = ntohl(destfw->sender_unique_ID_lo); 622 if (sc->sc_last_dest.hi != eui.hi || 623 sc->sc_last_dest.lo != eui.lo) { 624 fd = fw_noderesolve_eui64(fc, &eui); 625 if (!fd) { 626 /* error */ 627 if_statinc(ifp, if_oerrors); 628 /* XXX set error code */ 629 fwip_output_callback(xfer); 630 continue; 631 632 } 633 sc->sc_last_hdr.mode.wreqb.dst = 634 FWLOCALBUS | fd->dst; 635 sc->sc_last_hdr.mode.wreqb.tlrt = 0; 636 sc->sc_last_hdr.mode.wreqb.tcode = 637 FWTCODE_WREQB; 638 sc->sc_last_hdr.mode.wreqb.pri = 0; 639 sc->sc_last_hdr.mode.wreqb.src = nodeid; 640 sc->sc_last_hdr.mode.wreqb.dest_hi = 641 ntohs(destfw->sender_unicast_FIFO_hi); 642 sc->sc_last_hdr.mode.wreqb.dest_lo = 643 ntohl(destfw->sender_unicast_FIFO_lo); 644 sc->sc_last_hdr.mode.wreqb.extcode = 0; 645 sc->sc_last_dest = eui; 646 } 647 648 fp->mode.wreqb = sc->sc_last_hdr.mode.wreqb; 649 fp->mode.wreqb.len = m->m_pkthdr.len; 650 xfer->send.spd = uimin(destfw->sspd, fc->speed); 651 } 652 653 xfer->send.pay_len = m->m_pkthdr.len; 654 655 error = fw_asyreq(fc, -1, xfer); 656 if (error == EAGAIN) { 657 /* 658 * We ran out of tlabels - requeue the packet 659 * for later transmission. 660 */ 661 xfer->mbuf = 0; 662 mutex_enter(&sc->sc_mtx); 663 STAILQ_INSERT_TAIL(&sc->sc_xferlist, xfer, link); 664 mutex_exit(&sc->sc_mtx); 665 break; 666 } 667 IF_DEQUEUE(&ifp->if_snd, m); 668 if (error) { 669 /* error */ 670 if_statinc(ifp, if_oerrors); 671 /* XXX set error code */ 672 fwip_output_callback(xfer); 673 continue; 674 } else { 675 if_statinc(ifp, if_opackets); 676 i++; 677 } 678 } 679 #if 0 680 if (i > 1) 681 aprint_normal("%d queued\n", i); 682 #endif 683 if (i > 0) 684 xferq->start(fc); 685 } 686 687 /* Async. stream output */ 688 static void 689 fwip_stream_input(struct fw_xferq *xferq) 690 { 691 struct mbuf *m, *m0; 692 struct m_tag *mtag; 693 struct ifnet *ifp; 694 struct fwip_softc *sc; 695 struct fw_bulkxfer *sxfer; 696 struct fw_pkt *fp; 697 uint16_t src; 698 uint32_t *p; 699 700 sc = (struct fwip_softc *)xferq->sc; 701 ifp = sc->sc_eth.fwip_ifp; 702 while ((sxfer = STAILQ_FIRST(&xferq->stvalid)) != NULL) { 703 STAILQ_REMOVE_HEAD(&xferq->stvalid, link); 704 fp = mtod(sxfer->mbuf, struct fw_pkt *); 705 if (sc->sc_fd.fc->irx_post != NULL) 706 sc->sc_fd.fc->irx_post(sc->sc_fd.fc, fp->mode.ld); 707 m = sxfer->mbuf; 708 709 /* insert new rbuf */ 710 sxfer->mbuf = m0 = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 711 if (m0 != NULL) { 712 m0->m_len = m0->m_pkthdr.len = m0->m_ext.ext_size; 713 STAILQ_INSERT_TAIL(&xferq->stfree, sxfer, link); 714 } else 715 aprint_error_ifnet(ifp, 716 "fwip_as_input: m_getcl failed\n"); 717 718 /* 719 * We must have a GASP header - leave the 720 * encapsulation sanity checks to the generic 721 * code. Remeber that we also have the firewire async 722 * stream header even though that isn't accounted for 723 * in mode.stream.len. 724 */ 725 if (sxfer->resp != 0 || 726 fp->mode.stream.len < 2 * sizeof(uint32_t)) { 727 m_freem(m); 728 if_statinc(ifp, if_ierrors); 729 continue; 730 } 731 m->m_len = m->m_pkthdr.len = fp->mode.stream.len 732 + sizeof(fp->mode.stream); 733 734 /* 735 * If we received the packet on the broadcast channel, 736 * mark it as broadcast, otherwise we assume it must 737 * be multicast. 738 */ 739 if (fp->mode.stream.chtag == broadcast_channel) 740 m->m_flags |= M_BCAST; 741 else 742 m->m_flags |= M_MCAST; 743 744 /* 745 * Make sure we recognise the GASP specifier and 746 * version. 747 */ 748 p = mtod(m, uint32_t *); 749 if ((((ntohl(p[1]) & 0xffff) << 8) | ntohl(p[2]) >> 24) != 750 0x00005e || 751 (ntohl(p[2]) & 0xffffff) != 1) { 752 FWIPDEBUG(ifp, "Unrecognised GASP header %#08x %#08x\n", 753 ntohl(p[1]), ntohl(p[2])); 754 m_freem(m); 755 if_statinc(ifp, if_ierrors); 756 continue; 757 } 758 759 /* 760 * Record the sender ID for possible BPF usage. 761 */ 762 src = ntohl(p[1]) >> 16; 763 if (ifp->if_bpf) { 764 mtag = m_tag_get(MTAG_FIREWIRE_SENDER_EUID, 765 2 * sizeof(uint32_t), M_NOWAIT); 766 if (mtag) { 767 /* bpf wants it in network byte order */ 768 struct fw_device *fd; 769 uint32_t *p2 = (uint32_t *) (mtag + 1); 770 771 fd = fw_noderesolve_nodeid(sc->sc_fd.fc, 772 src & 0x3f); 773 if (fd) { 774 p2[0] = htonl(fd->eui.hi); 775 p2[1] = htonl(fd->eui.lo); 776 } else { 777 p2[0] = 0; 778 p2[1] = 0; 779 } 780 m_tag_prepend(m, mtag); 781 } 782 } 783 784 /* 785 * Trim off the GASP header 786 */ 787 m_adj(m, 3*sizeof(uint32_t)); 788 m_set_rcvif(m, ifp); 789 ieee1394_input(ifp, m, src); 790 if_statinc(ifp, if_ipackets); 791 } 792 if (STAILQ_FIRST(&xferq->stfree) != NULL) 793 sc->sc_fd.fc->irx_enable(sc->sc_fd.fc, sc->sc_dma_ch); 794 } 795 796 static inline void 797 fwip_unicast_input_recycle(struct fwip_softc *sc, struct fw_xfer *xfer) 798 { 799 struct mbuf *m; 800 801 /* 802 * We have finished with a unicast xfer. Allocate a new 803 * cluster and stick it on the back of the input queue. 804 */ 805 m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); 806 if (m == NULL) 807 aprint_error_dev(sc->sc_fd.dev, 808 "fwip_unicast_input_recycle: m_getcl failed\n"); 809 xfer->recv.payload = mtod(m, uint32_t *); 810 xfer->recv.pay_len = MCLBYTES; 811 xfer->mbuf = m; 812 mutex_enter(&sc->sc_fwb.fwb_mtx); 813 STAILQ_INSERT_TAIL(&sc->sc_fwb.xferlist, xfer, link); 814 mutex_exit(&sc->sc_fwb.fwb_mtx); 815 } 816 817 static void 818 fwip_unicast_input(struct fw_xfer *xfer) 819 { 820 uint64_t address; 821 struct mbuf *m; 822 struct m_tag *mtag; 823 struct ifnet *ifp; 824 struct fwip_softc *sc; 825 struct fw_pkt *fp; 826 int rtcode; 827 828 sc = (struct fwip_softc *)xfer->sc; 829 ifp = sc->sc_eth.fwip_ifp; 830 m = xfer->mbuf; 831 xfer->mbuf = 0; 832 fp = &xfer->recv.hdr; 833 834 /* 835 * Check the fifo address - we only accept addresses of 836 * exactly INET_FIFO. 837 */ 838 address = ((uint64_t)fp->mode.wreqb.dest_hi << 32) 839 | fp->mode.wreqb.dest_lo; 840 if (fp->mode.wreqb.tcode != FWTCODE_WREQB) { 841 rtcode = FWRCODE_ER_TYPE; 842 } else if (address != INET_FIFO) { 843 rtcode = FWRCODE_ER_ADDR; 844 } else { 845 rtcode = FWRCODE_COMPLETE; 846 } 847 848 /* 849 * Pick up a new mbuf and stick it on the back of the receive 850 * queue. 851 */ 852 fwip_unicast_input_recycle(sc, xfer); 853 854 /* 855 * If we've already rejected the packet, give up now. 856 */ 857 if (rtcode != FWRCODE_COMPLETE) { 858 m_freem(m); 859 if_statinc(ifp, if_ierrors); 860 return; 861 } 862 863 if (ifp->if_bpf) { 864 /* 865 * Record the sender ID for possible BPF usage. 866 */ 867 mtag = m_tag_get(MTAG_FIREWIRE_SENDER_EUID, 868 2 * sizeof(uint32_t), M_NOWAIT); 869 if (mtag) { 870 /* bpf wants it in network byte order */ 871 struct fw_device *fd; 872 uint32_t *p = (uint32_t *) (mtag + 1); 873 874 fd = fw_noderesolve_nodeid(sc->sc_fd.fc, 875 fp->mode.wreqb.src & 0x3f); 876 if (fd) { 877 p[0] = htonl(fd->eui.hi); 878 p[1] = htonl(fd->eui.lo); 879 } else { 880 p[0] = 0; 881 p[1] = 0; 882 } 883 m_tag_prepend(m, mtag); 884 } 885 } 886 887 /* 888 * Hand off to the generic encapsulation code. We don't use 889 * ifp->if_input so that we can pass the source nodeid as an 890 * argument to facilitate link-level fragment reassembly. 891 */ 892 m->m_len = m->m_pkthdr.len = fp->mode.wreqb.len; 893 m_set_rcvif(m, ifp); 894 ieee1394_input(ifp, m, fp->mode.wreqb.src); 895 if_statinc(ifp, if_ipackets); 896 } 897
Indexes created Sat Sep 20 22:09:52 GMT 2025