if_cdce.c revision 1.30
1 /* $NetBSD: if_cdce.c,v 1.30 2010/05/19 21:10:42 jakllsch Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul (at) windriver.com> 5 * Copyright (c) 2003 Craig Boston 6 * Copyright (c) 2004 Daniel Hartmeier 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Bill Paul. 20 * 4. Neither the name of the author nor the names of any co-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 Bill Paul 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 Bill Paul, THE VOICES IN HIS HEAD OR 28 * THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 31 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 33 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 34 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 /* 38 * USB Communication Device Class (Ethernet Networking Control Model) 39 * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf 40 * 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: if_cdce.c,v 1.30 2010/05/19 21:10:42 jakllsch Exp $"); 45 #ifdef __NetBSD__ 46 #include "opt_inet.h" 47 #endif 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/sockio.h> 52 #include <sys/mbuf.h> 53 #include <sys/malloc.h> 54 #include <sys/kernel.h> 55 #include <sys/socket.h> 56 #include <sys/device.h> 57 58 #if NRND > 0 59 #include <sys/rnd.h> 60 #endif 61 62 #include <net/if.h> 63 #include <net/if_arp.h> 64 #include <net/if_dl.h> 65 #include <net/if_media.h> 66 67 #include <net/bpf.h> 68 69 #include <net/if_ether.h> 70 #ifdef INET 71 #include <netinet/in.h> 72 #include <netinet/if_inarp.h> 73 #endif 74 75 76 77 #include <dev/usb/usb.h> 78 #include <dev/usb/usbdi.h> 79 #include <dev/usb/usbdi_util.h> 80 #include <dev/usb/usbdevs.h> 81 #include <dev/usb/usbcdc.h> 82 83 #include <dev/usb/if_cdcereg.h> 84 85 Static int cdce_tx_list_init(struct cdce_softc *); 86 Static int cdce_rx_list_init(struct cdce_softc *); 87 Static int cdce_newbuf(struct cdce_softc *, struct cdce_chain *, 88 struct mbuf *); 89 Static int cdce_encap(struct cdce_softc *, struct mbuf *, int); 90 Static void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 91 Static void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 92 Static void cdce_start(struct ifnet *); 93 Static int cdce_ioctl(struct ifnet *, u_long, void *); 94 Static void cdce_init(void *); 95 Static void cdce_watchdog(struct ifnet *); 96 Static void cdce_stop(struct cdce_softc *); 97 98 Static const struct cdce_type cdce_devs[] = { 99 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, 100 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, 101 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, 102 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, 103 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, 104 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, 105 }; 106 #define cdce_lookup(v, p) ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) 107 108 int cdce_match(device_t, cfdata_t, void *); 109 void cdce_attach(device_t, device_t, void *); 110 int cdce_detach(device_t, int); 111 int cdce_activate(device_t, enum devact); 112 extern struct cfdriver cdce_cd; 113 CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, 114 cdce_detach, cdce_activate); 115 116 int 117 cdce_match(device_t parent, cfdata_t match, void *aux) 118 { 119 struct usbif_attach_arg *uaa = aux; 120 121 if (cdce_lookup(uaa->vendor, uaa->product) != NULL) 122 return (UMATCH_VENDOR_PRODUCT); 123 124 if (uaa->class == UICLASS_CDC && uaa->subclass == 125 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) 126 return (UMATCH_IFACECLASS_GENERIC); 127 128 return (UMATCH_NONE); 129 } 130 131 void 132 cdce_attach(device_t parent, device_t self, void *aux) 133 { 134 struct cdce_softc *sc = device_private(self); 135 struct usbif_attach_arg *uaa = aux; 136 char *devinfop; 137 int s; 138 struct ifnet *ifp; 139 usbd_device_handle dev = uaa->device; 140 const struct cdce_type *t; 141 usb_interface_descriptor_t *id; 142 usb_endpoint_descriptor_t *ed; 143 const usb_cdc_union_descriptor_t *ud; 144 usb_config_descriptor_t *cd; 145 int data_ifcno; 146 int i, j, numalts; 147 u_char eaddr[ETHER_ADDR_LEN]; 148 const usb_cdc_ethernet_descriptor_t *ue; 149 char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; 150 151 sc->cdce_dev = self; 152 153 aprint_naive("\n"); 154 aprint_normal("\n"); 155 156 devinfop = usbd_devinfo_alloc(dev, 0); 157 aprint_normal_dev(self, "%s\n", devinfop); 158 usbd_devinfo_free(devinfop); 159 160 sc->cdce_udev = uaa->device; 161 sc->cdce_ctl_iface = uaa->iface; 162 163 t = cdce_lookup(uaa->vendor, uaa->product); 164 if (t) 165 sc->cdce_flags = t->cdce_flags; 166 167 if (sc->cdce_flags & CDCE_NO_UNION) 168 sc->cdce_data_iface = sc->cdce_ctl_iface; 169 else { 170 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, 171 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); 172 if (ud == NULL) { 173 aprint_error_dev(self, "no union descriptor\n"); 174 return; 175 } 176 data_ifcno = ud->bSlaveInterface[0]; 177 178 for (i = 0; i < uaa->nifaces; i++) { 179 if (uaa->ifaces[i] != NULL) { 180 id = usbd_get_interface_descriptor( 181 uaa->ifaces[i]); 182 if (id != NULL && id->bInterfaceNumber == 183 data_ifcno) { 184 sc->cdce_data_iface = uaa->ifaces[i]; 185 uaa->ifaces[i] = NULL; 186 } 187 } 188 } 189 } 190 191 if (sc->cdce_data_iface == NULL) { 192 aprint_error_dev(self, "no data interface\n"); 193 return; 194 } 195 196 /* 197 * <quote> 198 * The Data Class interface of a networking device shall have a minimum 199 * of two interface settings. The first setting (the default interface 200 * setting) includes no endpoints and therefore no networking traffic is 201 * exchanged whenever the default interface setting is selected. One or 202 * more additional interface settings are used for normal operation, and 203 * therefore each includes a pair of endpoints (one IN, and one OUT) to 204 * exchange network traffic. Select an alternate interface setting to 205 * initialize the network aspects of the device and to enable the 206 * exchange of network traffic. 207 * </quote> 208 * 209 * Some devices, most notably cable modems, include interface settings 210 * that have no IN or OUT endpoint, therefore loop through the list of all 211 * available interface settings looking for one with both IN and OUT 212 * endpoints. 213 */ 214 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 215 cd = usbd_get_config_descriptor(sc->cdce_udev); 216 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); 217 218 for (j = 0; j < numalts; j++) { 219 if (usbd_set_interface(sc->cdce_data_iface, j)) { 220 aprint_error_dev(sc->cdce_dev, 221 "setting alternate interface failed\n"); 222 return; 223 } 224 /* Find endpoints. */ 225 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 226 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; 227 for (i = 0; i < id->bNumEndpoints; i++) { 228 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); 229 if (!ed) { 230 aprint_error_dev(self, 231 "could not read endpoint descriptor\n"); 232 return; 233 } 234 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 235 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 236 sc->cdce_bulkin_no = ed->bEndpointAddress; 237 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 238 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 239 sc->cdce_bulkout_no = ed->bEndpointAddress; 240 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 241 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 242 /* XXX: CDC spec defines an interrupt pipe, but it is not 243 * needed for simple host-to-host applications. */ 244 } else { 245 aprint_error_dev(self, "unexpected endpoint\n"); 246 } 247 } 248 /* If we found something, try and use it... */ 249 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) 250 break; 251 } 252 253 if (sc->cdce_bulkin_no == -1) { 254 aprint_error_dev(self, "could not find data bulk in\n"); 255 return; 256 } 257 if (sc->cdce_bulkout_no == -1 ) { 258 aprint_error_dev(self, "could not find data bulk out\n"); 259 return; 260 } 261 262 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, 263 UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); 264 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || 265 ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { 266 aprint_normal_dev(self, "faking address\n"); 267 eaddr[0]= 0x2a; 268 memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); 269 eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); 270 } 271 272 s = splnet(); 273 274 aprint_normal_dev(self, "address %s\n", ether_sprintf(eaddr)); 275 276 ifp = GET_IFP(sc); 277 ifp->if_softc = sc; 278 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 279 ifp->if_ioctl = cdce_ioctl; 280 ifp->if_start = cdce_start; 281 ifp->if_watchdog = cdce_watchdog; 282 strncpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); 283 284 IFQ_SET_READY(&ifp->if_snd); 285 286 if_attach(ifp); 287 ether_ifattach(ifp, eaddr); 288 289 sc->cdce_attached = 1; 290 splx(s); 291 292 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, 293 sc->cdce_dev); 294 295 return; 296 } 297 298 int 299 cdce_detach(device_t self, int flags) 300 { 301 struct cdce_softc *sc = device_private(self); 302 struct ifnet *ifp = GET_IFP(sc); 303 int s; 304 305 s = splusb(); 306 307 if (!sc->cdce_attached) { 308 splx(s); 309 return (0); 310 } 311 312 if (ifp->if_flags & IFF_RUNNING) 313 cdce_stop(sc); 314 315 ether_ifdetach(ifp); 316 317 if_detach(ifp); 318 319 sc->cdce_attached = 0; 320 splx(s); 321 322 return (0); 323 } 324 325 Static void 326 cdce_start(struct ifnet *ifp) 327 { 328 struct cdce_softc *sc = ifp->if_softc; 329 struct mbuf *m_head = NULL; 330 331 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 332 return; 333 334 IFQ_POLL(&ifp->if_snd, m_head); 335 if (m_head == NULL) 336 return; 337 338 if (cdce_encap(sc, m_head, 0)) { 339 ifp->if_flags |= IFF_OACTIVE; 340 return; 341 } 342 343 IFQ_DEQUEUE(&ifp->if_snd, m_head); 344 345 bpf_mtap(ifp, m_head); 346 347 ifp->if_flags |= IFF_OACTIVE; 348 349 ifp->if_timer = 6; 350 } 351 352 Static int 353 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 354 { 355 struct cdce_chain *c; 356 usbd_status err; 357 int extra = 0; 358 359 c = &sc->cdce_cdata.cdce_tx_chain[idx]; 360 361 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 362 if (sc->cdce_flags & CDCE_ZAURUS) { 363 /* Zaurus wants a 32-bit CRC appended to every frame */ 364 uint32_t crc; 365 366 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 367 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 368 extra = sizeof(crc); 369 } 370 c->cdce_mbuf = m; 371 372 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkout_pipe, c, c->cdce_buf, 373 m->m_pkthdr.len + extra, USBD_NO_COPY, 10000, cdce_txeof); 374 err = usbd_transfer(c->cdce_xfer); 375 if (err != USBD_IN_PROGRESS) { 376 cdce_stop(sc); 377 return (EIO); 378 } 379 380 sc->cdce_cdata.cdce_tx_cnt++; 381 382 return (0); 383 } 384 385 Static void 386 cdce_stop(struct cdce_softc *sc) 387 { 388 usbd_status err; 389 struct ifnet *ifp = GET_IFP(sc); 390 int i; 391 392 ifp->if_timer = 0; 393 394 if (sc->cdce_bulkin_pipe != NULL) { 395 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 396 if (err) 397 printf("%s: abort rx pipe failed: %s\n", 398 device_xname(sc->cdce_dev), usbd_errstr(err)); 399 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 400 if (err) 401 printf("%s: close rx pipe failed: %s\n", 402 device_xname(sc->cdce_dev), usbd_errstr(err)); 403 sc->cdce_bulkin_pipe = NULL; 404 } 405 406 if (sc->cdce_bulkout_pipe != NULL) { 407 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 408 if (err) 409 printf("%s: abort tx pipe failed: %s\n", 410 device_xname(sc->cdce_dev), usbd_errstr(err)); 411 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 412 if (err) 413 printf("%s: close tx pipe failed: %s\n", 414 device_xname(sc->cdce_dev), usbd_errstr(err)); 415 sc->cdce_bulkout_pipe = NULL; 416 } 417 418 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 419 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 420 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 421 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 422 } 423 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 424 usbd_free_xfer(sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 425 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 426 } 427 } 428 429 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 430 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 431 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 432 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 433 } 434 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 435 usbd_free_xfer(sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 436 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 437 } 438 } 439 440 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 441 } 442 443 Static int 444 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 445 { 446 struct cdce_softc *sc = ifp->if_softc; 447 struct ifaddr *ifa = (struct ifaddr *)data; 448 struct ifreq *ifr = (struct ifreq *)data; 449 int s, error = 0; 450 451 if (sc->cdce_dying) 452 return (EIO); 453 454 s = splnet(); 455 456 switch(command) { 457 case SIOCINITIFADDR: 458 ifp->if_flags |= IFF_UP; 459 cdce_init(sc); 460 switch (ifa->ifa_addr->sa_family) { 461 #ifdef INET 462 case AF_INET: 463 arp_ifinit(ifp, ifa); 464 break; 465 #endif /* INET */ 466 } 467 break; 468 469 case SIOCSIFMTU: 470 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 471 error = EINVAL; 472 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 473 error = 0; 474 break; 475 476 case SIOCSIFFLAGS: 477 if ((error = ifioctl_common(ifp, command, data)) != 0) 478 break; 479 /* XXX re-use ether_ioctl() */ 480 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 481 case IFF_UP: 482 cdce_init(sc); 483 break; 484 case IFF_RUNNING: 485 cdce_stop(sc); 486 break; 487 default: 488 break; 489 } 490 break; 491 492 default: 493 error = ether_ioctl(ifp, command, data); 494 break; 495 } 496 497 splx(s); 498 499 if (error == ENETRESET) 500 error = 0; 501 502 return (error); 503 } 504 505 Static void 506 cdce_watchdog(struct ifnet *ifp) 507 { 508 struct cdce_softc *sc = ifp->if_softc; 509 510 if (sc->cdce_dying) 511 return; 512 513 ifp->if_oerrors++; 514 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 515 } 516 517 Static void 518 cdce_init(void *xsc) 519 { 520 struct cdce_softc *sc = xsc; 521 struct ifnet *ifp = GET_IFP(sc); 522 struct cdce_chain *c; 523 usbd_status err; 524 int s, i; 525 526 if (ifp->if_flags & IFF_RUNNING) 527 return; 528 529 s = splnet(); 530 531 if (cdce_tx_list_init(sc) == ENOBUFS) { 532 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 533 splx(s); 534 return; 535 } 536 537 if (cdce_rx_list_init(sc) == ENOBUFS) { 538 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 539 splx(s); 540 return; 541 } 542 543 /* Maybe set multicast / broadcast here??? */ 544 545 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 546 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 547 if (err) { 548 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 549 usbd_errstr(err)); 550 splx(s); 551 return; 552 } 553 554 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 555 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 556 if (err) { 557 printf("%s: open tx pipe failed: %s\n", 558 device_xname(sc->cdce_dev), usbd_errstr(err)); 559 splx(s); 560 return; 561 } 562 563 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 564 c = &sc->cdce_cdata.cdce_rx_chain[i]; 565 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, 566 c->cdce_buf, CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, 567 USBD_NO_TIMEOUT, cdce_rxeof); 568 usbd_transfer(c->cdce_xfer); 569 } 570 571 ifp->if_flags |= IFF_RUNNING; 572 ifp->if_flags &= ~IFF_OACTIVE; 573 574 splx(s); 575 } 576 577 Static int 578 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 579 { 580 struct mbuf *m_new = NULL; 581 582 if (m == NULL) { 583 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 584 if (m_new == NULL) { 585 printf("%s: no memory for rx list " 586 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 587 return (ENOBUFS); 588 } 589 MCLGET(m_new, M_DONTWAIT); 590 if (!(m_new->m_flags & M_EXT)) { 591 printf("%s: no memory for rx list " 592 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 593 m_freem(m_new); 594 return (ENOBUFS); 595 } 596 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 597 } else { 598 m_new = m; 599 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 600 m_new->m_data = m_new->m_ext.ext_buf; 601 } 602 c->cdce_mbuf = m_new; 603 return (0); 604 } 605 606 Static int 607 cdce_rx_list_init(struct cdce_softc *sc) 608 { 609 struct cdce_cdata *cd; 610 struct cdce_chain *c; 611 int i; 612 613 cd = &sc->cdce_cdata; 614 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 615 c = &cd->cdce_rx_chain[i]; 616 c->cdce_sc = sc; 617 c->cdce_idx = i; 618 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 619 return (ENOBUFS); 620 if (c->cdce_xfer == NULL) { 621 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 622 if (c->cdce_xfer == NULL) 623 return (ENOBUFS); 624 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 625 if (c->cdce_buf == NULL) 626 return (ENOBUFS); 627 } 628 } 629 630 return (0); 631 } 632 633 Static int 634 cdce_tx_list_init(struct cdce_softc *sc) 635 { 636 struct cdce_cdata *cd; 637 struct cdce_chain *c; 638 int i; 639 640 cd = &sc->cdce_cdata; 641 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 642 c = &cd->cdce_tx_chain[i]; 643 c->cdce_sc = sc; 644 c->cdce_idx = i; 645 c->cdce_mbuf = NULL; 646 if (c->cdce_xfer == NULL) { 647 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 648 if (c->cdce_xfer == NULL) 649 return (ENOBUFS); 650 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 651 if (c->cdce_buf == NULL) 652 return (ENOBUFS); 653 } 654 } 655 656 return (0); 657 } 658 659 Static void 660 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 661 { 662 struct cdce_chain *c = priv; 663 struct cdce_softc *sc = c->cdce_sc; 664 struct ifnet *ifp = GET_IFP(sc); 665 struct mbuf *m; 666 int total_len = 0; 667 int s; 668 669 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 670 return; 671 672 if (status != USBD_NORMAL_COMPLETION) { 673 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 674 return; 675 if (sc->cdce_rxeof_errors == 0) 676 printf("%s: usb error on rx: %s\n", 677 device_xname(sc->cdce_dev), usbd_errstr(status)); 678 if (status == USBD_STALLED) 679 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 680 DELAY(sc->cdce_rxeof_errors * 10000); 681 sc->cdce_rxeof_errors++; 682 goto done; 683 } 684 685 sc->cdce_rxeof_errors = 0; 686 687 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 688 if (sc->cdce_flags & CDCE_ZAURUS) 689 total_len -= 4; /* Strip off CRC added by Zaurus */ 690 if (total_len <= 1) 691 goto done; 692 693 m = c->cdce_mbuf; 694 memcpy(mtod(m, char *), c->cdce_buf, total_len); 695 696 if (total_len < sizeof(struct ether_header)) { 697 ifp->if_ierrors++; 698 goto done; 699 } 700 701 ifp->if_ipackets++; 702 m->m_pkthdr.len = m->m_len = total_len; 703 m->m_pkthdr.rcvif = ifp; 704 705 s = splnet(); 706 707 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 708 ifp->if_ierrors++; 709 goto done1; 710 } 711 712 bpf_mtap(ifp, m); 713 714 (*(ifp)->if_input)((ifp), (m)); 715 716 done1: 717 splx(s); 718 719 done: 720 /* Setup new transfer. */ 721 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, c->cdce_buf, 722 CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, 723 cdce_rxeof); 724 usbd_transfer(c->cdce_xfer); 725 } 726 727 Static void 728 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, 729 usbd_status status) 730 { 731 struct cdce_chain *c = priv; 732 struct cdce_softc *sc = c->cdce_sc; 733 struct ifnet *ifp = GET_IFP(sc); 734 usbd_status err; 735 int s; 736 737 if (sc->cdce_dying) 738 return; 739 740 s = splnet(); 741 742 ifp->if_timer = 0; 743 ifp->if_flags &= ~IFF_OACTIVE; 744 745 if (status != USBD_NORMAL_COMPLETION) { 746 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 747 splx(s); 748 return; 749 } 750 ifp->if_oerrors++; 751 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 752 usbd_errstr(status)); 753 if (status == USBD_STALLED) 754 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 755 splx(s); 756 return; 757 } 758 759 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 760 761 if (c->cdce_mbuf != NULL) { 762 m_freem(c->cdce_mbuf); 763 c->cdce_mbuf = NULL; 764 } 765 766 if (err) 767 ifp->if_oerrors++; 768 else 769 ifp->if_opackets++; 770 771 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 772 cdce_start(ifp); 773 774 splx(s); 775 } 776 777 int 778 cdce_activate(device_t self, enum devact act) 779 { 780 struct cdce_softc *sc = device_private(self); 781 782 switch (act) { 783 case DVACT_DEACTIVATE: 784 if_deactivate(GET_IFP(sc)); 785 sc->cdce_dying = 1; 786 return 0; 787 default: 788 return EOPNOTSUPP; 789 } 790 } 791
Indexes created Sat Sep 27 21:09:56 GMT 2025