sys/dev/usb/if_cdce.c

   1 /*      $NetBSD: if_cdce.c,v 1.4 2004/10/24 12:50:54 augustss Exp $ */
   2
   3 /*
   4  * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul@windriver.com>
   5  * Copyright (c) 2003-2005 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 #include <sys/cdefs.h>
  43 __FBSDID("$FreeBSD$");
  44
  45 #include <sys/param.h>
  46 #include <sys/systm.h>
  47 #include <sys/sockio.h>
  48 #include <sys/mbuf.h>
  49 #include <sys/malloc.h>
  50 #include <sys/kernel.h>
  51 #include <sys/module.h>
  52 #include <sys/socket.h>
  53 #include <sys/endian.h>
  54
  55 #include <net/if.h>
  56 #include <net/if_arp.h>
  57 #include <net/ethernet.h>
  58 #include <net/if_types.h>
  59 #include <net/if_media.h>
  60
  61 #include <net/bpf.h>
  62
  63 #include <sys/bus.h>
  64 #include <machine/bus.h>
  65
  66 #include <dev/usb/usb.h>
  67 #include <dev/usb/usbdi.h>
  68 #include <dev/usb/usbdi_util.h>
  69 #include <dev/usb/usbdivar.h>
  70 #include <dev/usb/usb_ethersubr.h>
  71
  72 #include <dev/usb/usbcdc.h>
  73 #include "usbdevs.h"
  74 #include <dev/usb/if_cdcereg.h>
  75
  76 static device_shutdown_t cdce_shutdown;
  77 USB_DECLARE_DRIVER_INIT(cdce,
  78         DEVMETHOD(device_probe, cdce_match),
  79         DEVMETHOD(device_attach, cdce_attach),
  80         DEVMETHOD(device_detach, cdce_detach),
  81         DEVMETHOD(device_shutdown, cdce_shutdown)
  82         );
  83 DRIVER_MODULE(cdce, uhub, cdce_driver, cdce_devclass, usbd_driver_load, 0);
  84 MODULE_VERSION(cdce, 0);
  85
  86 static int       cdce_encap(struct cdce_softc *, struct mbuf *, int);
  87 static void      cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
  88 static void      cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
  89 static void      cdce_start(struct ifnet *);
  90 static int       cdce_ioctl(struct ifnet *, u_long, caddr_t);
  91 static void      cdce_init(void *);
  92 static void      cdce_reset(struct cdce_softc *);
  93 static void      cdce_stop(struct cdce_softc *);
  94 static void      cdce_rxstart(struct ifnet *);
  95 static int       cdce_ifmedia_upd(struct ifnet *ifp);
  96 static void      cdce_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
  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_SLA300 }, 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_SLC700 }, CDCE_ZAURUS | CDCE_NO_UNION },
 104   {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC750 }, CDCE_ZAURUS | CDCE_NO_UNION },
 105   {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION },
 106   {{ USB_VENDOR_NETCHIP, USB_PRODUCT_NETCHIP_ETHERNETGADGET }, CDCE_NO_UNION },
 107   {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION },
 108 };
 109 #define cdce_lookup(v, p) ((const struct cdce_type *)usb_lookup(cdce_devs, v, p))
 110
 111 USB_MATCH(cdce)
 112 {
 113         USB_MATCH_START(cdce, uaa);
 114         usb_interface_descriptor_t *id;
 115
 116         if (uaa->iface == NULL)
 117                 return (UMATCH_NONE);
 118
 119         id = usbd_get_interface_descriptor(uaa->iface);
 120         if (id == NULL)
 121                 return (UMATCH_NONE);
 122
 123         if (cdce_lookup(uaa->vendor, uaa->product) != NULL)
 124                 return (UMATCH_VENDOR_PRODUCT);
 125
 126         if (id->bInterfaceClass == UICLASS_CDC && id->bInterfaceSubClass ==
 127             UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL)
 128                 return (UMATCH_IFACECLASS_GENERIC);
 129
 130         return (UMATCH_NONE);
 131 }
 132
 133 USB_ATTACH(cdce)
 134 {
 135         USB_ATTACH_START(cdce, sc, uaa);
 136         struct ifnet                    *ifp;
 137         usbd_device_handle               dev = uaa->device;
 138         const struct cdce_type          *t;
 139         usb_interface_descriptor_t      *id;
 140         usb_endpoint_descriptor_t       *ed;
 141         const usb_cdc_union_descriptor_t *ud;
 142         usb_config_descriptor_t         *cd;
 143         int                              data_ifcno;
 144         int                              i, j, numalts;
 145         u_char                           eaddr[ETHER_ADDR_LEN];
 146         const usb_cdc_ethernet_descriptor_t *ue;
 147         char                             eaddr_str[USB_MAX_STRING_LEN];
 148
 149         sc->cdce_dev = self;
 150         sc->cdce_udev = uaa->device;
 151
 152         t = cdce_lookup(uaa->vendor, uaa->product);
 153         if (t)
 154                 sc->cdce_flags = t->cdce_flags;
 155
 156         if (sc->cdce_flags & CDCE_NO_UNION)
 157                 sc->cdce_data_iface = uaa->iface;
 158         else {
 159                 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev,
 160                     UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION);
 161                 if (ud == NULL) {
 162                         device_printf(sc->cdce_dev, "no union descriptor\n");
 163                         return ENXIO;
 164                 }
 165                 data_ifcno = ud->bSlaveInterface[0];
 166
 167                 for (i = 0; i < uaa->nifaces; i++) {
 168                         if (uaa->ifaces[i] != NULL) {
 169                                 id = usbd_get_interface_descriptor(
 170                                     uaa->ifaces[i]);
 171                                 if (id != NULL && id->bInterfaceNumber ==
 172                                     data_ifcno) {
 173                                         sc->cdce_data_iface = uaa->ifaces[i];
 174                                         uaa->ifaces[i] = NULL;
 175                                 }
 176                         }
 177                 }
 178         }
 179
 180         if (sc->cdce_data_iface == NULL) {
 181                 device_printf(sc->cdce_dev, "no data interface\n");
 182                 return ENXIO;
 183         }
 184
 185         /*
 186          * <quote>
 187          *  The Data Class interface of a networking device shall have a minimum
 188          *  of two interface settings. The first setting (the default interface
 189          *  setting) includes no endpoints and therefore no networking traffic is
 190          *  exchanged whenever the default interface setting is selected. One or
 191          *  more additional interface settings are used for normal operation, and
 192          *  therefore each includes a pair of endpoints (one IN, and one OUT) to
 193          *  exchange network traffic. Select an alternate interface setting to
 194          *  initialize the network aspects of the device and to enable the
 195          *  exchange of network traffic.
 196          * </quote>
 197          *
 198          * Some devices, most notably cable modems, include interface settings
 199          * that have no IN or OUT endpoint, therefore loop through the list of all
 200          * available interface settings looking for one with both IN and OUT
 201          * endpoints.
 202          */
 203         id = usbd_get_interface_descriptor(sc->cdce_data_iface);
 204         cd = usbd_get_config_descriptor(sc->cdce_udev);
 205         numalts = usbd_get_no_alts(cd, id->bInterfaceNumber);
 206
 207         for (j = 0; j < numalts; j++) {
 208                 if (usbd_set_interface(sc->cdce_data_iface, j)) {
 209                         device_printf(sc->cdce_dev,
 210                             "setting alternate interface failed\n");
 211                         return ENXIO;
 212                 }
 213                 /* Find endpoints. */
 214                 id = usbd_get_interface_descriptor(sc->cdce_data_iface);
 215                 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1;
 216                 for (i = 0; i < id->bNumEndpoints; i++) {
 217                         ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i);
 218                         if (!ed) {
 219                                 device_printf(sc->cdce_dev,
 220                                     "could not read endpoint descriptor\n");
 221                                 return ENXIO;
 222                         }
 223                         if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 224                             UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 225                                 sc->cdce_bulkin_no = ed->bEndpointAddress;
 226                         } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
 227                             UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 228                                 sc->cdce_bulkout_no = ed->bEndpointAddress;
 229                         } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 230                             UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
 231                                 /* XXX: CDC spec defines an interrupt pipe, but it is not
 232                                  * needed for simple host-to-host applications. */
 233                         } else {
 234                                 device_printf(sc->cdce_dev,
 235                                     "unexpected endpoint\n");
 236                         }
 237                 }
 238                 /* If we found something, try and use it... */
 239                 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1))
 240                         break;
 241         }
 242
 243         if (sc->cdce_bulkin_no == -1) {
 244                 device_printf(sc->cdce_dev, "could not find data bulk in\n");
 245                 return ENXIO;
 246         }
 247         if (sc->cdce_bulkout_no == -1 ) {
 248                 device_printf(sc->cdce_dev, "could not find data bulk out\n");
 249                 return ENXIO;
 250         }
 251
 252         mtx_init(&sc->cdce_mtx, device_get_nameunit(sc->cdce_dev), MTX_NETWORK_LOCK,
 253             MTX_DEF | MTX_RECURSE);
 254         ifmedia_init(&sc->cdce_ifmedia, 0, cdce_ifmedia_upd, cdce_ifmedia_sts);
 255         CDCE_LOCK(sc);
 256
 257         ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev,
 258             UDESC_INTERFACE, UDESCSUB_CDC_ENF);
 259         if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str)) {
 260                 /* Fake MAC address */
 261                 device_printf(sc->cdce_dev, "faking MAC address\n");
 262                 eaddr[0]= 0x2a;
 263                 memcpy(&eaddr[1], &ticks, sizeof(u_int32_t));
 264                 eaddr[5] = (u_int8_t)device_get_unit(sc->cdce_dev);
 265         } else {
 266                 int i;
 267
 268                 memset(eaddr, 0, ETHER_ADDR_LEN);
 269                 for (i = 0; i < ETHER_ADDR_LEN * 2; i++) {
 270                         int c = eaddr_str[i];
 271
 272                         if ('0' <= c && c <= '9')
 273                                 c -= '0';
 274                         else
 275                                 c -= 'A' - 10;
 276                         c &= 0xf;
 277                         if (c % 2 == 0)
 278                                 c <<= 4;
 279                         eaddr[i / 2] |= c;
 280                 }
 281         }
 282
 283         ifp = GET_IFP(sc) = if_alloc(IFT_ETHER);
 284         if (ifp == NULL) {
 285                 device_printf(sc->cdce_dev, "can not if_alloc()\n");
 286                 CDCE_UNLOCK(sc);
 287                 mtx_destroy(&sc->cdce_mtx);
 288                 return ENXIO;
 289         }
 290         ifp->if_softc = sc;
 291         if_initname(ifp, "cdce", device_get_unit(sc->cdce_dev));
 292         ifp->if_mtu = ETHERMTU;
 293         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
 294                 IFF_NEEDSGIANT;
 295         ifp->if_ioctl = cdce_ioctl;
 296         ifp->if_output = ether_output;
 297         ifp->if_start = cdce_start;
 298         ifp->if_init = cdce_init;
 299         ifp->if_baudrate = 11000000;
 300         ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
 301
 302         sc->q.ifp = ifp;
 303         sc->q.if_rxstart = cdce_rxstart;
 304
 305         /* No IFM type for 11Mbps USB, so go with 10baseT */
 306         ifmedia_add(&sc->cdce_ifmedia, IFM_ETHER | IFM_10_T, 0, 0);
 307         ifmedia_set(&sc->cdce_ifmedia, IFM_ETHER | IFM_10_T);
 308
 309         ether_ifattach(ifp, eaddr);
 310         usb_register_netisr();
 311
 312         CDCE_UNLOCK(sc);
 313
 314         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev,
 315             USBDEV(sc->cdce_dev));
 316
 317         return 0;
 318 }
 319
 320 USB_DETACH(cdce)
 321 {
 322         USB_DETACH_START(cdce, sc);
 323         struct ifnet    *ifp;
 324
 325         CDCE_LOCK(sc);
 326         sc->cdce_dying = 1;
 327         ifp = GET_IFP(sc);
 328         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 329                 cdce_shutdown(sc->cdce_dev);
 330
 331         ether_ifdetach(ifp);
 332         if_free(ifp);
 333         ifmedia_removeall(&sc->cdce_ifmedia);
 334         CDCE_UNLOCK(sc);
 335         mtx_destroy(&sc->cdce_mtx);
 336
 337         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->cdce_udev,
 338                 USBDEV(sc->cdce_dev));
 339
 340         return (0);
 341 }
 342
 343 static void
 344 cdce_start(struct ifnet *ifp)
 345 {
 346         struct cdce_softc       *sc;
 347         struct mbuf             *m_head = NULL;
 348
 349         sc = ifp->if_softc;
 350         CDCE_LOCK(sc);
 351
 352
 353         if (sc->cdce_dying ||
 354                 ifp->if_drv_flags & IFF_DRV_OACTIVE ||
 355                 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 356                 CDCE_UNLOCK(sc);
 357                 return;
 358         }
 359
 360         IF_DEQUEUE(&ifp->if_snd, m_head);
 361         if (m_head == NULL) {
 362                 CDCE_UNLOCK(sc);
 363                 return;
 364         }
 365
 366         if (cdce_encap(sc, m_head, 0)) {
 367                 IF_PREPEND(&ifp->if_snd, m_head);
 368                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
 369                 CDCE_UNLOCK(sc);
 370                 return;
 371         }
 372
 373         BPF_MTAP(ifp, m_head);
 374
 375         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
 376
 377         CDCE_UNLOCK(sc);
 378
 379         return;
 380 }
 381
 382 static int
 383 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx)
 384 {
 385         struct ue_chain *c;
 386         usbd_status              err;
 387         int                      extra = 0;
 388
 389         c = &sc->cdce_cdata.ue_tx_chain[idx];
 390
 391         m_copydata(m, 0, m->m_pkthdr.len, c->ue_buf);
 392         if (sc->cdce_flags & CDCE_ZAURUS) {
 393                 /* Zaurus wants a 32-bit CRC appended to every frame */
 394                 u_int32_t crc;
 395
 396                 crc = htole32(crc32(c->ue_buf, m->m_pkthdr.len));
 397                 bcopy(&crc, c->ue_buf + m->m_pkthdr.len, 4);
 398                 extra = 4;
 399         }
 400         c->ue_mbuf = m;
 401
 402         usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkout_pipe, c, c->ue_buf,
 403             m->m_pkthdr.len + extra, 0, 10000, cdce_txeof);
 404         err = usbd_transfer(c->ue_xfer);
 405         if (err != USBD_IN_PROGRESS) {
 406                 cdce_stop(sc);
 407                 return (EIO);
 408         }
 409
 410         sc->cdce_cdata.ue_tx_cnt++;
 411
 412         return (0);
 413 }
 414
 415 static void
 416 cdce_stop(struct cdce_softc *sc)
 417 {
 418         usbd_status      err;
 419         struct ifnet    *ifp;
 420
 421         CDCE_LOCK(sc);
 422
 423         cdce_reset(sc);
 424
 425         ifp = GET_IFP(sc);
 426         ifp->if_timer = 0;
 427
 428         if (sc->cdce_bulkin_pipe != NULL) {
 429                 err = usbd_abort_pipe(sc->cdce_bulkin_pipe);
 430                 if (err)
 431                         device_printf(sc->cdce_dev,
 432                             "abort rx pipe failed: %s\n", usbd_errstr(err));
 433                 err = usbd_close_pipe(sc->cdce_bulkin_pipe);
 434                 if (err)
 435                         device_printf(sc->cdce_dev,
 436                             "close rx pipe failed: %s\n", usbd_errstr(err));
 437                 sc->cdce_bulkin_pipe = NULL;
 438         }
 439
 440         if (sc->cdce_bulkout_pipe != NULL) {
 441                 err = usbd_abort_pipe(sc->cdce_bulkout_pipe);
 442                 if (err)
 443                         device_printf(sc->cdce_dev,
 444                             "abort tx pipe failed: %s\n", usbd_errstr(err));
 445                 err = usbd_close_pipe(sc->cdce_bulkout_pipe);
 446                 if (err)
 447                         device_printf(sc->cdce_dev,
 448                             "close tx pipe failed: %s\n", usbd_errstr(err));
 449                 sc->cdce_bulkout_pipe = NULL;
 450         }
 451
 452         usb_ether_rx_list_free(&sc->cdce_cdata);
 453         usb_ether_tx_list_free(&sc->cdce_cdata);
 454
 455         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 456         CDCE_UNLOCK(sc);
 457
 458         return;
 459 }
 460
 461 static int
 462 cdce_shutdown(device_t dev)
 463 {
 464         struct cdce_softc *sc;
 465
 466         sc = device_get_softc(dev);
 467         cdce_stop(sc);
 468
 469         return (0);
 470 }
 471
 472 static int
 473 cdce_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
 474 {
 475         struct cdce_softc       *sc = ifp->if_softc;
 476         struct ifreq            *ifr = (struct ifreq *)data;
 477         int                      error = 0;
 478
 479         if (sc->cdce_dying)
 480                 return (ENXIO);
 481
 482         switch(command) {
 483         case SIOCSIFFLAGS:
 484                 if (ifp->if_flags & IFF_UP) {
 485                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
 486                                 cdce_init(sc);
 487                 } else {
 488                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 489                                 cdce_stop(sc);
 490                 }
 491                 error = 0;
 492                 break;
 493
 494         case SIOCSIFMEDIA:
 495         case SIOCGIFMEDIA:
 496                 error = ifmedia_ioctl(ifp, ifr, &sc->cdce_ifmedia, command);
 497                 break;
 498
 499         default:
 500                 error = ether_ioctl(ifp, command, data);
 501                 break;
 502         }
 503
 504         return (error);
 505 }
 506
 507 static void
 508 cdce_reset(struct cdce_softc *sc)
 509 {
 510         /* XXX Maybe reset the bulk pipes here? */
 511         return;
 512 }
 513
 514 static void
 515 cdce_init(void *xsc)
 516 {
 517         struct cdce_softc       *sc = xsc;
 518         struct ifnet            *ifp = GET_IFP(sc);
 519         struct ue_chain *c;
 520         usbd_status              err;
 521         int                      i;
 522
 523         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 524                 return;
 525
 526         CDCE_LOCK(sc);
 527         cdce_reset(sc);
 528
 529         if (usb_ether_tx_list_init(sc, &sc->cdce_cdata,
 530             sc->cdce_udev) == ENOBUFS) {
 531                 device_printf(sc->cdce_dev, "tx list init failed\n");
 532                 CDCE_UNLOCK(sc);
 533                 return;
 534         }
 535
 536         if (usb_ether_rx_list_init(sc, &sc->cdce_cdata,
 537             sc->cdce_udev) == ENOBUFS) {
 538                 device_printf(sc->cdce_dev, "rx list init failed\n");
 539                 CDCE_UNLOCK(sc);
 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                 device_printf(sc->cdce_dev, "open rx pipe failed: %s\n",
 549                     usbd_errstr(err));
 550                 CDCE_UNLOCK(sc);
 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                 device_printf(sc->cdce_dev, "open tx pipe failed: %s\n",
 558                     usbd_errstr(err));
 559                 CDCE_UNLOCK(sc);
 560                 return;
 561         }
 562
 563         for (i = 0; i < UE_RX_LIST_CNT; i++) {
 564                 c = &sc->cdce_cdata.ue_rx_chain[i];
 565                 usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
 566                     mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK,
 567                     USBD_NO_TIMEOUT, cdce_rxeof);
 568                 usbd_transfer(c->ue_xfer);
 569         }
 570
 571         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 572         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 573
 574         CDCE_UNLOCK(sc);
 575
 576         return;
 577 }
 578
 579 static void
 580 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 581 {
 582         struct ue_chain *c = priv;
 583         struct cdce_softc       *sc = c->ue_sc;
 584         struct ifnet            *ifp;
 585         struct mbuf             *m;
 586         int                      total_len = 0;
 587
 588         CDCE_LOCK(sc);
 589         ifp = GET_IFP(sc);
 590
 591         if (sc->cdce_dying || !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 592                 CDCE_UNLOCK(sc);
 593                 return;
 594         }
 595
 596         if (status != USBD_NORMAL_COMPLETION) {
 597                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
 598                         CDCE_UNLOCK(sc);
 599                         return;
 600                 }
 601                 if (sc->cdce_rxeof_errors == 0)
 602                         device_printf(sc->cdce_dev, "usb error on rx: %s\n",
 603                             usbd_errstr(status));
 604                 if (status == USBD_STALLED)
 605                         usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe);
 606                 DELAY(sc->cdce_rxeof_errors * 10000);
 607                 sc->cdce_rxeof_errors++;
 608                 goto done;
 609         }
 610
 611         sc->cdce_rxeof_errors = 0;
 612
 613         usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
 614
 615         if (sc->cdce_flags & CDCE_ZAURUS)
 616                 total_len -= 4; /* Strip off CRC added by Zaurus */
 617
 618         m = c->ue_mbuf;
 619
 620         if (total_len < sizeof(struct ether_header)) {
 621                 ifp->if_ierrors++;
 622                 goto done;
 623         }
 624
 625         ifp->if_ipackets++;
 626         m->m_pkthdr.rcvif = (struct ifnet *)&sc->q;
 627         m->m_pkthdr.len = m->m_len = total_len;
 628
 629         /* Put the packet on the special USB input queue. */
 630         usb_ether_input(m);
 631         CDCE_UNLOCK(sc);
 632
 633         return;
 634
 635 done:
 636         /* Setup new transfer. */
 637         usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
 638             mtod(c->ue_mbuf, char *),
 639             UE_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT,
 640             cdce_rxeof);
 641         usbd_transfer(c->ue_xfer);
 642         CDCE_UNLOCK(sc);
 643
 644         return;
 645 }
 646
 647 static void
 648 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 649 {
 650         struct ue_chain *c = priv;
 651         struct cdce_softc       *sc = c->ue_sc;
 652         struct ifnet            *ifp;
 653         usbd_status              err;
 654
 655         CDCE_LOCK(sc);
 656         ifp = GET_IFP(sc);
 657
 658         if (sc->cdce_dying ||
 659                 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 660                 CDCE_UNLOCK(sc);
 661                 return;
 662         }
 663
 664         if (status != USBD_NORMAL_COMPLETION) {
 665                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
 666                         CDCE_UNLOCK(sc);
 667                         return;
 668                 }
 669                 ifp->if_oerrors++;
 670                 device_printf(sc->cdce_dev, "usb error on tx: %s\n",
 671                     usbd_errstr(status));
 672                 if (status == USBD_STALLED)
 673                         usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe);
 674                 CDCE_UNLOCK(sc);
 675                 return;
 676         }
 677
 678         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 679         usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &err);
 680
 681         if (c->ue_mbuf != NULL) {
 682                 c->ue_mbuf->m_pkthdr.rcvif = ifp;
 683                 usb_tx_done(c->ue_mbuf);
 684                 c->ue_mbuf = NULL;
 685         }
 686
 687         if (err)
 688                 ifp->if_oerrors++;
 689         else
 690                 ifp->if_opackets++;
 691
 692         CDCE_UNLOCK(sc);
 693
 694         return;
 695 }
 696
 697 static void
 698 cdce_rxstart(struct ifnet *ifp)
 699 {
 700         struct cdce_softc   *sc;
 701         struct ue_chain   *c;
 702
 703         sc = ifp->if_softc;
 704         CDCE_LOCK(sc);
 705
 706         if (sc->cdce_dying || !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 707                 CDCE_UNLOCK(sc);
 708                 return;
 709         }
 710
 711         c = &sc->cdce_cdata.ue_rx_chain[sc->cdce_cdata.ue_rx_prod];
 712
 713         c->ue_mbuf = usb_ether_newbuf();
 714         if (c->ue_mbuf == NULL) {
 715                 device_printf(sc->cdce_dev, "no memory for rx list "
 716                     "-- packet dropped!\n");
 717                 ifp->if_ierrors++;
 718                 CDCE_UNLOCK(sc);
 719                 return;
 720         }
 721
 722         usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
 723             mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK,
 724             USBD_NO_TIMEOUT, cdce_rxeof);
 725         usbd_transfer(c->ue_xfer);
 726
 727         CDCE_UNLOCK(sc);
 728         return;
 729 }
 730
 731 static int
 732 cdce_ifmedia_upd(struct ifnet *ifp)
 733 {
 734
 735         /* no-op, cdce has only 1 possible media type */
 736         return 0;
 737 }
 738
 739 static void
 740 cdce_ifmedia_sts(struct ifnet * const ifp, struct ifmediareq *req)
 741 {
 742
 743         req->ifm_status = IFM_AVALID | IFM_ACTIVE;
 744         req->ifm_active = IFM_ETHER | IFM_10_T;
 745 }