1 /* $NetBSD: if_cdce.c,v 1.38 2013/01/05 01:30:15 christos Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul@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 1.38 2013/01/05 01:30:15 christos Exp $"); 45 46 #ifdef _KERNEL_OPT 47 #include "opt_inet.h" 48 #endif 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/sockio.h> 53 #include <sys/mbuf.h> 54 #include <sys/kernel.h> 55 #include <sys/socket.h> 56 #include <sys/device.h> 57 58 #include <sys/rnd.h> 59 60 #include <net/if.h> 61 #include <net/if_arp.h> 62 #include <net/if_dl.h> 63 #include <net/if_media.h> 64 65 #include <net/bpf.h> 66 67 #include <net/if_ether.h> 68 #ifdef INET 69 #include <netinet/in.h> 70 #include <netinet/if_inarp.h> 71 #endif 72 73 74 75 #include <dev/usb/usb.h> 76 #include <dev/usb/usbdi.h> 77 #include <dev/usb/usbdi_util.h> 78 #include <dev/usb/usbdevs.h> 79 #include <dev/usb/usbcdc.h> 80 81 #include <dev/usb/if_cdcereg.h> 82 83 Static int cdce_tx_list_init(struct cdce_softc *); 84 Static int cdce_rx_list_init(struct cdce_softc *); 85 Static int cdce_newbuf(struct cdce_softc *, struct cdce_chain *, 86 struct mbuf *); 87 Static int cdce_encap(struct cdce_softc *, struct mbuf *, int); 88 Static void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 89 Static void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 90 Static void cdce_start(struct ifnet *); 91 Static int cdce_ioctl(struct ifnet *, u_long, void *); 92 Static void cdce_init(void *); 93 Static void cdce_watchdog(struct ifnet *); 94 Static void cdce_stop(struct cdce_softc *); 95 96 Static const struct cdce_type cdce_devs[] = { 97 {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION }, 98 {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION }, 99 {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION }, 100 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION }, 101 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION }, 102 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, 103 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, 104 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, 105 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, 106 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, 107 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, 108 }; 109 #define cdce_lookup(v, p) \ 110 ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) 111 112 int cdce_match(device_t, cfdata_t, void *); 113 void cdce_attach(device_t, device_t, void *); 114 int cdce_detach(device_t, int); 115 int cdce_activate(device_t, enum devact); 116 extern struct cfdriver cdce_cd; 117 CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, 118 cdce_detach, cdce_activate); 119 120 int 121 cdce_match(device_t parent, cfdata_t match, void *aux) 122 { 123 struct usbif_attach_arg *uaa = aux; 124 125 if (cdce_lookup(uaa->vendor, uaa->product) != NULL) 126 return (UMATCH_VENDOR_PRODUCT); 127 128 if (uaa->class == UICLASS_CDC && uaa->subclass == 129 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) 130 return (UMATCH_IFACECLASS_GENERIC); 131 132 return (UMATCH_NONE); 133 } 134 135 void 136 cdce_attach(device_t parent, device_t self, void *aux) 137 { 138 struct cdce_softc *sc = device_private(self); 139 struct usbif_attach_arg *uaa = aux; 140 char *devinfop; 141 int s; 142 struct ifnet *ifp; 143 usbd_device_handle dev = uaa->device; 144 const struct cdce_type *t; 145 usb_interface_descriptor_t *id; 146 usb_endpoint_descriptor_t *ed; 147 const usb_cdc_union_descriptor_t *ud; 148 usb_config_descriptor_t *cd; 149 int data_ifcno; 150 int i, j, numalts; 151 u_char eaddr[ETHER_ADDR_LEN]; 152 const usb_cdc_ethernet_descriptor_t *ue; 153 char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; 154 155 sc->cdce_dev = self; 156 157 aprint_naive("\n"); 158 aprint_normal("\n"); 159 160 devinfop = usbd_devinfo_alloc(dev, 0); 161 aprint_normal_dev(self, "%s\n", devinfop); 162 usbd_devinfo_free(devinfop); 163 164 sc->cdce_udev = uaa->device; 165 sc->cdce_ctl_iface = uaa->iface; 166 167 t = cdce_lookup(uaa->vendor, uaa->product); 168 if (t) 169 sc->cdce_flags = t->cdce_flags; 170 171 if (sc->cdce_flags & CDCE_NO_UNION) 172 sc->cdce_data_iface = sc->cdce_ctl_iface; 173 else { 174 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, 175 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); 176 if (ud == NULL) { 177 aprint_error_dev(self, "no union descriptor\n"); 178 return; 179 } 180 data_ifcno = ud->bSlaveInterface[0]; 181 182 for (i = 0; i < uaa->nifaces; i++) { 183 if (uaa->ifaces[i] != NULL) { 184 id = usbd_get_interface_descriptor( 185 uaa->ifaces[i]); 186 if (id != NULL && id->bInterfaceNumber == 187 data_ifcno) { 188 sc->cdce_data_iface = uaa->ifaces[i]; 189 uaa->ifaces[i] = NULL; 190 } 191 } 192 } 193 } 194 195 if (sc->cdce_data_iface == NULL) { 196 aprint_error_dev(self, "no data interface\n"); 197 return; 198 } 199 200 /* 201 * <quote> 202 * The Data Class interface of a networking device shall have a minimum 203 * of two interface settings. The first setting (the default interface 204 * setting) includes no endpoints and therefore no networking traffic is 205 * exchanged whenever the default interface setting is selected. One or 206 * more additional interface settings are used for normal operation, and 207 * therefore each includes a pair of endpoints (one IN, and one OUT) to 208 * exchange network traffic. Select an alternate interface setting to 209 * initialize the network aspects of the device and to enable the 210 * exchange of network traffic. 211 * </quote> 212 * 213 * Some devices, most notably cable modems, include interface settings 214 * that have no IN or OUT endpoint, therefore loop through the list of all 215 * available interface settings looking for one with both IN and OUT 216 * endpoints. 217 */ 218 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 219 cd = usbd_get_config_descriptor(sc->cdce_udev); 220 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); 221 222 for (j = 0; j < numalts; j++) { 223 if (usbd_set_interface(sc->cdce_data_iface, j)) { 224 aprint_error_dev(sc->cdce_dev, 225 "setting alternate interface failed\n"); 226 return; 227 } 228 /* Find endpoints. */ 229 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 230 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; 231 for (i = 0; i < id->bNumEndpoints; i++) { 232 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); 233 if (!ed) { 234 aprint_error_dev(self, 235 "could not read endpoint descriptor\n"); 236 return; 237 } 238 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 239 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 240 sc->cdce_bulkin_no = ed->bEndpointAddress; 241 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 242 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 243 sc->cdce_bulkout_no = ed->bEndpointAddress; 244 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 245 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 246 /* XXX: CDC spec defines an interrupt pipe, but it is not 247 * needed for simple host-to-host applications. */ 248 } else { 249 aprint_error_dev(self, "unexpected endpoint\n"); 250 } 251 } 252 /* If we found something, try and use it... */ 253 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) 254 break; 255 } 256 257 if (sc->cdce_bulkin_no == -1) { 258 aprint_error_dev(self, "could not find data bulk in\n"); 259 return; 260 } 261 if (sc->cdce_bulkout_no == -1 ) { 262 aprint_error_dev(self, "could not find data bulk out\n"); 263 return; 264 } 265 266 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, 267 UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); 268 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || 269 ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { 270 aprint_normal_dev(self, "faking address\n"); 271 eaddr[0]= 0x2a; 272 memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); 273 eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); 274 } 275 276 s = splnet(); 277 278 aprint_normal_dev(self, "address %s\n", ether_sprintf(eaddr)); 279 280 ifp = GET_IFP(sc); 281 ifp->if_softc = sc; 282 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 283 ifp->if_ioctl = cdce_ioctl; 284 ifp->if_start = cdce_start; 285 ifp->if_watchdog = cdce_watchdog; 286 strncpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); 287 288 IFQ_SET_READY(&ifp->if_snd); 289 290 if_attach(ifp); 291 ether_ifattach(ifp, eaddr); 292 293 sc->cdce_attached = 1; 294 splx(s); 295 296 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, 297 sc->cdce_dev); 298 299 if (!pmf_device_register(self, NULL, NULL)) 300 aprint_error_dev(self, "couldn't establish power handler\n"); 301 302 return; 303 } 304 305 int 306 cdce_detach(device_t self, int flags) 307 { 308 struct cdce_softc *sc = device_private(self); 309 struct ifnet *ifp = GET_IFP(sc); 310 int s; 311 312 pmf_device_deregister(self); 313 314 s = splusb(); 315 316 if (!sc->cdce_attached) { 317 splx(s); 318 return (0); 319 } 320 321 if (ifp->if_flags & IFF_RUNNING) 322 cdce_stop(sc); 323 324 ether_ifdetach(ifp); 325 326 if_detach(ifp); 327 328 sc->cdce_attached = 0; 329 splx(s); 330 331 return (0); 332 } 333 334 Static void 335 cdce_start(struct ifnet *ifp) 336 { 337 struct cdce_softc *sc = ifp->if_softc; 338 struct mbuf *m_head = NULL; 339 340 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 341 return; 342 343 IFQ_POLL(&ifp->if_snd, m_head); 344 if (m_head == NULL) 345 return; 346 347 if (cdce_encap(sc, m_head, 0)) { 348 ifp->if_flags |= IFF_OACTIVE; 349 return; 350 } 351 352 IFQ_DEQUEUE(&ifp->if_snd, m_head); 353 354 bpf_mtap(ifp, m_head); 355 356 ifp->if_flags |= IFF_OACTIVE; 357 358 ifp->if_timer = 6; 359 } 360 361 Static int 362 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 363 { 364 struct cdce_chain *c; 365 usbd_status err; 366 int extra = 0; 367 368 c = &sc->cdce_cdata.cdce_tx_chain[idx]; 369 370 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 371 if (sc->cdce_flags & CDCE_ZAURUS) { 372 /* Zaurus wants a 32-bit CRC appended to every frame */ 373 uint32_t crc; 374 375 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 376 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 377 extra = sizeof(crc); 378 } 379 c->cdce_mbuf = m; 380 381 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkout_pipe, c, c->cdce_buf, 382 m->m_pkthdr.len + extra, USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 383 10000, cdce_txeof); 384 err = usbd_transfer(c->cdce_xfer); 385 if (err != USBD_IN_PROGRESS) { 386 cdce_stop(sc); 387 return (EIO); 388 } 389 390 sc->cdce_cdata.cdce_tx_cnt++; 391 392 return (0); 393 } 394 395 Static void 396 cdce_stop(struct cdce_softc *sc) 397 { 398 usbd_status err; 399 struct ifnet *ifp = GET_IFP(sc); 400 int i; 401 402 ifp->if_timer = 0; 403 404 if (sc->cdce_bulkin_pipe != NULL) { 405 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 406 if (err) 407 printf("%s: abort rx pipe failed: %s\n", 408 device_xname(sc->cdce_dev), usbd_errstr(err)); 409 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 410 if (err) 411 printf("%s: close rx pipe failed: %s\n", 412 device_xname(sc->cdce_dev), usbd_errstr(err)); 413 sc->cdce_bulkin_pipe = NULL; 414 } 415 416 if (sc->cdce_bulkout_pipe != NULL) { 417 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 418 if (err) 419 printf("%s: abort tx pipe failed: %s\n", 420 device_xname(sc->cdce_dev), usbd_errstr(err)); 421 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 422 if (err) 423 printf("%s: close tx pipe failed: %s\n", 424 device_xname(sc->cdce_dev), usbd_errstr(err)); 425 sc->cdce_bulkout_pipe = NULL; 426 } 427 428 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 429 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 430 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 431 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 432 } 433 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 434 usbd_free_xfer 435 (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 436 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 437 } 438 } 439 440 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 441 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 442 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 443 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 444 } 445 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 446 usbd_free_xfer( 447 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 448 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 449 } 450 } 451 452 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 453 } 454 455 Static int 456 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 457 { 458 struct cdce_softc *sc = ifp->if_softc; 459 struct ifaddr *ifa = (struct ifaddr *)data; 460 struct ifreq *ifr = (struct ifreq *)data; 461 int s, error = 0; 462 463 if (sc->cdce_dying) 464 return (EIO); 465 466 s = splnet(); 467 468 switch(command) { 469 case SIOCINITIFADDR: 470 ifp->if_flags |= IFF_UP; 471 cdce_init(sc); 472 switch (ifa->ifa_addr->sa_family) { 473 #ifdef INET 474 case AF_INET: 475 arp_ifinit(ifp, ifa); 476 break; 477 #endif /* INET */ 478 } 479 break; 480 481 case SIOCSIFMTU: 482 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 483 error = EINVAL; 484 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 485 error = 0; 486 break; 487 488 case SIOCSIFFLAGS: 489 if ((error = ifioctl_common(ifp, command, data)) != 0) 490 break; 491 /* XXX re-use ether_ioctl() */ 492 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 493 case IFF_UP: 494 cdce_init(sc); 495 break; 496 case IFF_RUNNING: 497 cdce_stop(sc); 498 break; 499 default: 500 break; 501 } 502 break; 503 504 default: 505 error = ether_ioctl(ifp, command, data); 506 break; 507 } 508 509 splx(s); 510 511 if (error == ENETRESET) 512 error = 0; 513 514 return (error); 515 } 516 517 Static void 518 cdce_watchdog(struct ifnet *ifp) 519 { 520 struct cdce_softc *sc = ifp->if_softc; 521 522 if (sc->cdce_dying) 523 return; 524 525 ifp->if_oerrors++; 526 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 527 } 528 529 Static void 530 cdce_init(void *xsc) 531 { 532 struct cdce_softc *sc = xsc; 533 struct ifnet *ifp = GET_IFP(sc); 534 struct cdce_chain *c; 535 usbd_status err; 536 int s, i; 537 538 if (ifp->if_flags & IFF_RUNNING) 539 return; 540 541 s = splnet(); 542 543 if (cdce_tx_list_init(sc) == ENOBUFS) { 544 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 545 splx(s); 546 return; 547 } 548 549 if (cdce_rx_list_init(sc) == ENOBUFS) { 550 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 551 splx(s); 552 return; 553 } 554 555 /* Maybe set multicast / broadcast here??? */ 556 557 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 558 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 559 if (err) { 560 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 561 usbd_errstr(err)); 562 splx(s); 563 return; 564 } 565 566 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 567 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 568 if (err) { 569 printf("%s: open tx pipe failed: %s\n", 570 device_xname(sc->cdce_dev), usbd_errstr(err)); 571 splx(s); 572 return; 573 } 574 575 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 576 c = &sc->cdce_cdata.cdce_rx_chain[i]; 577 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, 578 c->cdce_buf, CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, 579 USBD_NO_TIMEOUT, cdce_rxeof); 580 usbd_transfer(c->cdce_xfer); 581 } 582 583 ifp->if_flags |= IFF_RUNNING; 584 ifp->if_flags &= ~IFF_OACTIVE; 585 586 splx(s); 587 } 588 589 Static int 590 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 591 { 592 struct mbuf *m_new = NULL; 593 594 if (m == NULL) { 595 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 596 if (m_new == NULL) { 597 printf("%s: no memory for rx list " 598 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 599 return (ENOBUFS); 600 } 601 MCLGET(m_new, M_DONTWAIT); 602 if (!(m_new->m_flags & M_EXT)) { 603 printf("%s: no memory for rx list " 604 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 605 m_freem(m_new); 606 return (ENOBUFS); 607 } 608 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 609 } else { 610 m_new = m; 611 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 612 m_new->m_data = m_new->m_ext.ext_buf; 613 } 614 c->cdce_mbuf = m_new; 615 return (0); 616 } 617 618 Static int 619 cdce_rx_list_init(struct cdce_softc *sc) 620 { 621 struct cdce_cdata *cd; 622 struct cdce_chain *c; 623 int i; 624 625 cd = &sc->cdce_cdata; 626 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 627 c = &cd->cdce_rx_chain[i]; 628 c->cdce_sc = sc; 629 c->cdce_idx = i; 630 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 631 return (ENOBUFS); 632 if (c->cdce_xfer == NULL) { 633 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 634 if (c->cdce_xfer == NULL) 635 return (ENOBUFS); 636 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, 637 CDCE_BUFSZ); 638 if (c->cdce_buf == NULL) 639 return (ENOBUFS); 640 } 641 } 642 643 return (0); 644 } 645 646 Static int 647 cdce_tx_list_init(struct cdce_softc *sc) 648 { 649 struct cdce_cdata *cd; 650 struct cdce_chain *c; 651 int i; 652 653 cd = &sc->cdce_cdata; 654 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 655 c = &cd->cdce_tx_chain[i]; 656 c->cdce_sc = sc; 657 c->cdce_idx = i; 658 c->cdce_mbuf = NULL; 659 if (c->cdce_xfer == NULL) { 660 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 661 if (c->cdce_xfer == NULL) 662 return (ENOBUFS); 663 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 664 if (c->cdce_buf == NULL) 665 return (ENOBUFS); 666 } 667 } 668 669 return (0); 670 } 671 672 Static void 673 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 674 { 675 struct cdce_chain *c = priv; 676 struct cdce_softc *sc = c->cdce_sc; 677 struct ifnet *ifp = GET_IFP(sc); 678 struct mbuf *m; 679 int total_len = 0; 680 int s; 681 682 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 683 return; 684 685 if (status != USBD_NORMAL_COMPLETION) { 686 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 687 return; 688 if (sc->cdce_rxeof_errors == 0) 689 printf("%s: usb error on rx: %s\n", 690 device_xname(sc->cdce_dev), usbd_errstr(status)); 691 if (status == USBD_STALLED) 692 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 693 DELAY(sc->cdce_rxeof_errors * 10000); 694 sc->cdce_rxeof_errors++; 695 goto done; 696 } 697 698 sc->cdce_rxeof_errors = 0; 699 700 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 701 if (sc->cdce_flags & CDCE_ZAURUS) 702 total_len -= 4; /* Strip off CRC added by Zaurus */ 703 if (total_len <= 1) 704 goto done; 705 706 m = c->cdce_mbuf; 707 memcpy(mtod(m, char *), c->cdce_buf, total_len); 708 709 if (total_len < sizeof(struct ether_header)) { 710 ifp->if_ierrors++; 711 goto done; 712 } 713 714 ifp->if_ipackets++; 715 m->m_pkthdr.len = m->m_len = total_len; 716 m->m_pkthdr.rcvif = ifp; 717 718 s = splnet(); 719 720 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 721 ifp->if_ierrors++; 722 goto done1; 723 } 724 725 bpf_mtap(ifp, m); 726 727 (*(ifp)->if_input)((ifp), (m)); 728 729 done1: 730 splx(s); 731 732 done: 733 /* Setup new transfer. */ 734 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, c->cdce_buf, 735 CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, 736 cdce_rxeof); 737 usbd_transfer(c->cdce_xfer); 738 } 739 740 Static void 741 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, 742 usbd_status status) 743 { 744 struct cdce_chain *c = priv; 745 struct cdce_softc *sc = c->cdce_sc; 746 struct ifnet *ifp = GET_IFP(sc); 747 usbd_status err; 748 int s; 749 750 if (sc->cdce_dying) 751 return; 752 753 s = splnet(); 754 755 ifp->if_timer = 0; 756 ifp->if_flags &= ~IFF_OACTIVE; 757 758 if (status != USBD_NORMAL_COMPLETION) { 759 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 760 splx(s); 761 return; 762 } 763 ifp->if_oerrors++; 764 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 765 usbd_errstr(status)); 766 if (status == USBD_STALLED) 767 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 768 splx(s); 769 return; 770 } 771 772 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 773 774 if (c->cdce_mbuf != NULL) { 775 m_freem(c->cdce_mbuf); 776 c->cdce_mbuf = NULL; 777 } 778 779 if (err) 780 ifp->if_oerrors++; 781 else 782 ifp->if_opackets++; 783 784 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 785 cdce_start(ifp); 786 787 splx(s); 788 } 789 790 int 791 cdce_activate(device_t self, enum devact act) 792 { 793 struct cdce_softc *sc = device_private(self); 794 795 switch (act) { 796 case DVACT_DEACTIVATE: 797 if_deactivate(GET_IFP(sc)); 798 sc->cdce_dying = 1; 799 return 0; 800 default: 801 return EOPNOTSUPP; 802 } 803 } 804