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 };
 108 #define cdce_lookup(v, p) ((const struct cdce_type *)usb_lookup(cdce_devs, v, p))
 109
 110 USB_MATCH(cdce)
 111 {
 112         USB_MATCH_START(cdce, uaa);
 113         usb_interface_descriptor_t *id;
 114
 115         if (uaa->iface == NULL)
 116                 return (UMATCH_NONE);
 117
 118         id = usbd_get_interface_descriptor(uaa->iface);
 119         if (id == NULL)
 120                 return (UMATCH_NONE);
 121
 122         if (cdce_lookup(uaa->vendor, uaa->product) != NULL)
 123                 return (UMATCH_VENDOR_PRODUCT);
 124
 125         if (id->bInterfaceClass == UICLASS_CDC && id->bInterfaceSubClass ==
 126             UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL)
 127                 return (UMATCH_IFACECLASS_GENERIC);
 128
 129         return (UMATCH_NONE);
 130 }
 131
 132 USB_ATTACH(cdce)
 133 {
 134         USB_ATTACH_START(cdce, sc, uaa);
 135         struct ifnet                    *ifp;
 136         usbd_device_handle               dev = uaa->device;
 137         const struct cdce_type          *t;
 138         usb_interface_descriptor_t      *id;
 139         usb_endpoint_descriptor_t       *ed;
 140         const usb_cdc_union_descriptor_t *ud;
 141         usb_config_descriptor_t         *cd;
 142         int                              data_ifcno;
 143         int                              i, j, numalts;
 144         u_char                           eaddr[ETHER_ADDR_LEN];
 145         const usb_cdc_ethernet_descriptor_t *ue;
 146         char                             eaddr_str[USB_MAX_STRING_LEN];
 147
 148         bzero(sc, sizeof(struct cdce_softc));
 149         sc->cdce_dev = self;
 150         usbd_devinfo(dev, 0, sc->devinfo);
 151         device_set_desc_copy(self, sc->devinfo);
 152         printf("%s: %s\n", USBDEVNAME(sc->cdce_dev), sc->devinfo);
 153
 154         sc->cdce_udev = uaa->device;
 155         sc->cdce_unit = device_get_unit(self);
 156
 157         t = cdce_lookup(uaa->vendor, uaa->product);
 158         if (t)
 159                 sc->cdce_flags = t->cdce_flags;
 160
 161         if (sc->cdce_flags & CDCE_NO_UNION)
 162                 sc->cdce_data_iface = uaa->iface;
 163         else {
 164                 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev,
 165                     UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION);
 166                 if (ud == NULL) {
 167                         printf("%s: no union descriptor\n",
 168                             USBDEVNAME(sc->cdce_dev));
 169                         USB_ATTACH_ERROR_RETURN;
 170                 }
 171                 data_ifcno = ud->bSlaveInterface[0];
 172
 173                 for (i = 0; i < uaa->nifaces; i++) {
 174                         if (uaa->ifaces[i] != NULL) {
 175                                 id = usbd_get_interface_descriptor(
 176                                     uaa->ifaces[i]);
 177                                 if (id != NULL && id->bInterfaceNumber ==
 178                                     data_ifcno) {
 179                                         sc->cdce_data_iface = uaa->ifaces[i];
 180                                         uaa->ifaces[i] = NULL;
 181                                 }
 182                         }
 183                 }
 184         }
 185
 186         if (sc->cdce_data_iface == NULL) {
 187                 printf("%s: no data interface\n", USBDEVNAME(sc->cdce_dev));
 188                 USB_ATTACH_ERROR_RETURN;
 189         }
 190
 191         /*
 192          * <quote>
 193          *  The Data Class interface of a networking device shall have a minimum
 194          *  of two interface settings. The first setting (the default interface
 195          *  setting) includes no endpoints and therefore no networking traffic is
 196          *  exchanged whenever the default interface setting is selected. One or
 197          *  more additional interface settings are used for normal operation, and
 198          *  therefore each includes a pair of endpoints (one IN, and one OUT) to
 199          *  exchange network traffic. Select an alternate interface setting to
 200          *  initialize the network aspects of the device and to enable the
 201          *  exchange of network traffic.
 202          * </quote>
 203          *
 204          * Some devices, most notably cable modems, include interface settings
 205          * that have no IN or OUT endpoint, therefore loop through the list of all
 206          * available interface settings looking for one with both IN and OUT
 207          * endpoints.
 208          */
 209         id = usbd_get_interface_descriptor(sc->cdce_data_iface);
 210         cd = usbd_get_config_descriptor(sc->cdce_udev);
 211         numalts = usbd_get_no_alts(cd, id->bInterfaceNumber);
 212
 213         for (j = 0; j < numalts; j++) {
 214                 if (usbd_set_interface(sc->cdce_data_iface, j)) {
 215                         printf("%s: setting alternate interface failed\n",
 216                             USBDEVNAME(sc->cdce_dev));
 217                         USB_ATTACH_ERROR_RETURN;
 218                 }
 219                 /* Find endpoints. */
 220                 id = usbd_get_interface_descriptor(sc->cdce_data_iface);
 221                 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1;
 222                 for (i = 0; i < id->bNumEndpoints; i++) {
 223                         ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i);
 224                         if (!ed) {
 225                                 printf("%s: could not read endpoint descriptor\n",
 226                                     USBDEVNAME(sc->cdce_dev));
 227                                 USB_ATTACH_ERROR_RETURN;
 228                         }
 229                         if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 230                             UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 231                                 sc->cdce_bulkin_no = ed->bEndpointAddress;
 232                         } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
 233                             UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
 234                                 sc->cdce_bulkout_no = ed->bEndpointAddress;
 235                         } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
 236                             UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
 237                                 /* XXX: CDC spec defines an interrupt pipe, but it is not
 238                                  * needed for simple host-to-host applications. */
 239                         } else {
 240                                 printf("%s: unexpected endpoint\n",
 241                                     USBDEVNAME(sc->cdce_dev));
 242                         }
 243                 }
 244                 /* If we found something, try and use it... */
 245                 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1))
 246                         break;
 247         }
 248
 249         if (sc->cdce_bulkin_no == -1) {
 250                 printf("%s: could not find data bulk in\n",
 251                     USBDEVNAME(sc->cdce_dev));
 252                 USB_ATTACH_ERROR_RETURN;
 253         }
 254         if (sc->cdce_bulkout_no == -1 ) {
 255                 printf("%s: could not find data bulk out\n",
 256                     USBDEVNAME(sc->cdce_dev));
 257                 USB_ATTACH_ERROR_RETURN;
 258         }
 259
 260         mtx_init(&sc->cdce_mtx, USBDEVNAME(sc->cdce_dev), MTX_NETWORK_LOCK,
 261             MTX_DEF | MTX_RECURSE);
 262         ifmedia_init(&sc->cdce_ifmedia, 0, cdce_ifmedia_upd, cdce_ifmedia_sts);
 263         CDCE_LOCK(sc);
 264
 265         ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev,
 266             UDESC_INTERFACE, UDESCSUB_CDC_ENF);
 267         if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str)) {
 268                 /* Fake MAC address */
 269                 printf("%s: faking MAC address\n", USBDEVNAME(sc->cdce_dev));
 270                 eaddr[0]= 0x2a;
 271                 memcpy(&eaddr[1], &ticks, sizeof(u_int32_t));
 272                 eaddr[5] = (u_int8_t)(sc->cdce_unit);
 273         } else {
 274                 int i;
 275
 276                 memset(eaddr, 0, ETHER_ADDR_LEN);
 277                 for (i = 0; i < ETHER_ADDR_LEN * 2; i++) {
 278                         int c = eaddr_str[i];
 279
 280                         if ('0' <= c && c <= '9')
 281                                 c -= '0';
 282                         else
 283                                 c -= 'A' - 10;
 284                         c &= 0xf;
 285                         if (c % 2 == 0)
 286                                 c <<= 4;
 287                         eaddr[i / 2] |= c;
 288                 }
 289         }
 290
 291         ifp = GET_IFP(sc) = if_alloc(IFT_ETHER);
 292         if (ifp == NULL) {
 293                 printf("%s: can not if_alloc()\n", USBDEVNAME(sc->cdce_dev));
 294                 CDCE_UNLOCK(sc);
 295                 mtx_destroy(&sc->cdce_mtx);
 296                 USB_ATTACH_ERROR_RETURN;
 297         }
 298         ifp->if_softc = sc;
 299         if_initname(ifp, "cdce", sc->cdce_unit);
 300         ifp->if_mtu = ETHERMTU;
 301         ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
 302                 IFF_NEEDSGIANT;
 303         ifp->if_ioctl = cdce_ioctl;
 304         ifp->if_output = ether_output;
 305         ifp->if_start = cdce_start;
 306         ifp->if_init = cdce_init;
 307         ifp->if_baudrate = 11000000;
 308         ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
 309
 310         sc->q.ifp = ifp;
 311         sc->q.if_rxstart = cdce_rxstart;
 312
 313         /* No IFM type for 11Mbps USB, so go with 10baseT */
 314         ifmedia_add(&sc->cdce_ifmedia, IFM_ETHER | IFM_10_T, 0, 0);
 315         ifmedia_set(&sc->cdce_ifmedia, IFM_ETHER | IFM_10_T);
 316
 317         ether_ifattach(ifp, eaddr);
 318         usb_register_netisr();
 319
 320         CDCE_UNLOCK(sc);
 321
 322         usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev,
 323             USBDEV(sc->cdce_dev));
 324
 325         USB_ATTACH_SUCCESS_RETURN;
 326 }
 327
 328 USB_DETACH(cdce)
 329 {
 330         USB_DETACH_START(cdce, sc);
 331         struct ifnet    *ifp;
 332
 333         CDCE_LOCK(sc);
 334         sc->cdce_dying = 1;
 335         ifp = GET_IFP(sc);
 336         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 337                 cdce_shutdown(sc->cdce_dev);
 338
 339         ether_ifdetach(ifp);
 340         if_free(ifp);
 341         ifmedia_removeall(&sc->cdce_ifmedia);
 342         CDCE_UNLOCK(sc);
 343         mtx_destroy(&sc->cdce_mtx);
 344
 345         usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->cdce_udev,
 346                 USBDEV(sc->cdce_dev));
 347
 348         return (0);
 349 }
 350
 351 Static void
 352 cdce_start(struct ifnet *ifp)
 353 {
 354         struct cdce_softc       *sc;
 355         struct mbuf             *m_head = NULL;
 356
 357         sc = ifp->if_softc;
 358         CDCE_LOCK(sc);
 359
 360
 361         if (sc->cdce_dying ||
 362                 ifp->if_drv_flags & IFF_DRV_OACTIVE ||
 363                 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 364                 CDCE_UNLOCK(sc);
 365                 return;
 366         }
 367
 368         IF_DEQUEUE(&ifp->if_snd, m_head);
 369         if (m_head == NULL) {
 370                 CDCE_UNLOCK(sc);
 371                 return;
 372         }
 373
 374         if (cdce_encap(sc, m_head, 0)) {
 375                 IF_PREPEND(&ifp->if_snd, m_head);
 376                 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
 377                 CDCE_UNLOCK(sc);
 378                 return;
 379         }
 380
 381         BPF_MTAP(ifp, m_head);
 382
 383         ifp->if_drv_flags |= IFF_DRV_OACTIVE;
 384
 385         CDCE_UNLOCK(sc);
 386
 387         return;
 388 }
 389
 390 Static int
 391 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx)
 392 {
 393         struct ue_chain *c;
 394         usbd_status              err;
 395         int                      extra = 0;
 396
 397         c = &sc->cdce_cdata.ue_tx_chain[idx];
 398
 399         m_copydata(m, 0, m->m_pkthdr.len, c->ue_buf);
 400         if (sc->cdce_flags & CDCE_ZAURUS) {
 401                 /* Zaurus wants a 32-bit CRC appended to every frame */
 402                 u_int32_t crc;
 403
 404                 crc = htole32(crc32(c->ue_buf, m->m_pkthdr.len));
 405                 bcopy(&crc, c->ue_buf + m->m_pkthdr.len, 4);
 406                 extra = 4;
 407         }
 408         c->ue_mbuf = m;
 409
 410         usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkout_pipe, c, c->ue_buf,
 411             m->m_pkthdr.len + extra, 0, 10000, cdce_txeof);
 412         err = usbd_transfer(c->ue_xfer);
 413         if (err != USBD_IN_PROGRESS) {
 414                 cdce_stop(sc);
 415                 return (EIO);
 416         }
 417
 418         sc->cdce_cdata.ue_tx_cnt++;
 419
 420         return (0);
 421 }
 422
 423 Static void
 424 cdce_stop(struct cdce_softc *sc)
 425 {
 426         usbd_status      err;
 427         struct ifnet    *ifp;
 428
 429         CDCE_LOCK(sc);
 430
 431         cdce_reset(sc);
 432
 433         ifp = GET_IFP(sc);
 434         ifp->if_timer = 0;
 435
 436         if (sc->cdce_bulkin_pipe != NULL) {
 437                 err = usbd_abort_pipe(sc->cdce_bulkin_pipe);
 438                 if (err)
 439                         printf("%s: abort rx pipe failed: %s\n",
 440                             USBDEVNAME(sc->cdce_dev), usbd_errstr(err));
 441                 err = usbd_close_pipe(sc->cdce_bulkin_pipe);
 442                 if (err)
 443                         printf("%s: close rx pipe failed: %s\n",
 444                             USBDEVNAME(sc->cdce_dev), usbd_errstr(err));
 445                 sc->cdce_bulkin_pipe = NULL;
 446         }
 447
 448         if (sc->cdce_bulkout_pipe != NULL) {
 449                 err = usbd_abort_pipe(sc->cdce_bulkout_pipe);
 450                 if (err)
 451                         printf("%s: abort tx pipe failed: %s\n",
 452                             USBDEVNAME(sc->cdce_dev), usbd_errstr(err));
 453                 err = usbd_close_pipe(sc->cdce_bulkout_pipe);
 454                 if (err)
 455                         printf("%s: close tx pipe failed: %s\n",
 456                             USBDEVNAME(sc->cdce_dev), usbd_errstr(err));
 457                 sc->cdce_bulkout_pipe = NULL;
 458         }
 459
 460         usb_ether_rx_list_free(&sc->cdce_cdata);
 461         usb_ether_tx_list_free(&sc->cdce_cdata);
 462
 463         ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
 464         CDCE_UNLOCK(sc);
 465
 466         return;
 467 }
 468
 469 Static int
 470 cdce_shutdown(device_ptr_t dev)
 471 {
 472         struct cdce_softc *sc;
 473
 474         sc = device_get_softc(dev);
 475         cdce_stop(sc);
 476
 477         return (0);
 478 }
 479
 480 Static int
 481 cdce_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
 482 {
 483         struct cdce_softc       *sc = ifp->if_softc;
 484         struct ifreq            *ifr = (struct ifreq *)data;
 485         int                      error = 0;
 486
 487         if (sc->cdce_dying)
 488                 return (ENXIO);
 489
 490         switch(command) {
 491         case SIOCSIFFLAGS:
 492                 if (ifp->if_flags & IFF_UP) {
 493                         if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
 494                                 cdce_init(sc);
 495                 } else {
 496                         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 497                                 cdce_stop(sc);
 498                 }
 499                 error = 0;
 500                 break;
 501
 502         case SIOCSIFMEDIA:
 503         case SIOCGIFMEDIA:
 504                 error = ifmedia_ioctl(ifp, ifr, &sc->cdce_ifmedia, command);
 505                 break;
 506
 507         default:
 508                 error = ether_ioctl(ifp, command, data);
 509                 break;
 510         }
 511
 512         return (error);
 513 }
 514
 515 Static void
 516 cdce_reset(struct cdce_softc *sc)
 517 {
 518         /* XXX Maybe reset the bulk pipes here? */
 519         return;
 520 }
 521
 522 Static void
 523 cdce_init(void *xsc)
 524 {
 525         struct cdce_softc       *sc = xsc;
 526         struct ifnet            *ifp = GET_IFP(sc);
 527         struct ue_chain *c;
 528         usbd_status              err;
 529         int                      i;
 530
 531         if (ifp->if_drv_flags & IFF_DRV_RUNNING)
 532                 return;
 533
 534         CDCE_LOCK(sc);
 535         cdce_reset(sc);
 536
 537         if (usb_ether_tx_list_init(sc, &sc->cdce_cdata,
 538             sc->cdce_udev) == ENOBUFS) {
 539                 printf("%s: tx list init failed\n", USBDEVNAME(sc->cdce_dev));
 540                 CDCE_UNLOCK(sc);
 541                 return;
 542         }
 543
 544         if (usb_ether_rx_list_init(sc, &sc->cdce_cdata,
 545             sc->cdce_udev) == ENOBUFS) {
 546                 printf("%s: rx list init failed\n", USBDEVNAME(sc->cdce_dev));
 547                 CDCE_UNLOCK(sc);
 548                 return;
 549         }
 550
 551         /* Maybe set multicast / broadcast here??? */
 552
 553         err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no,
 554             USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe);
 555         if (err) {
 556                 printf("%s: open rx pipe failed: %s\n", USBDEVNAME(sc->cdce_dev),
 557                     usbd_errstr(err));
 558                 CDCE_UNLOCK(sc);
 559                 return;
 560         }
 561
 562         err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no,
 563             USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe);
 564         if (err) {
 565                 printf("%s: open tx pipe failed: %s\n", USBDEVNAME(sc->cdce_dev),
 566                     usbd_errstr(err));
 567                 CDCE_UNLOCK(sc);
 568                 return;
 569         }
 570
 571         for (i = 0; i < UE_RX_LIST_CNT; i++) {
 572                 c = &sc->cdce_cdata.ue_rx_chain[i];
 573                 usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
 574                     mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK,
 575                     USBD_NO_TIMEOUT, cdce_rxeof);
 576                 usbd_transfer(c->ue_xfer);
 577         }
 578
 579         ifp->if_drv_flags |= IFF_DRV_RUNNING;
 580         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 581
 582         CDCE_UNLOCK(sc);
 583
 584         return;
 585 }
 586
 587 Static void
 588 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 589 {
 590         struct ue_chain *c = priv;
 591         struct cdce_softc       *sc = c->ue_sc;
 592         struct ifnet            *ifp;
 593         struct mbuf             *m;
 594         int                      total_len = 0;
 595
 596         CDCE_LOCK(sc);
 597         ifp = GET_IFP(sc);
 598
 599         if (sc->cdce_dying || !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 600                 CDCE_UNLOCK(sc);
 601                 return;
 602         }
 603
 604         if (status != USBD_NORMAL_COMPLETION) {
 605                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
 606                         CDCE_UNLOCK(sc);
 607                         return;
 608                 }
 609                 if (sc->cdce_rxeof_errors == 0)
 610                         printf("%s: usb error on rx: %s\n",
 611                             USBDEVNAME(sc->cdce_dev), usbd_errstr(status));
 612                 if (status == USBD_STALLED)
 613                         usbd_clear_endpoint_stall(sc->cdce_bulkin_pipe);
 614                 DELAY(sc->cdce_rxeof_errors * 10000);
 615                 sc->cdce_rxeof_errors++;
 616                 goto done;
 617         }
 618
 619         sc->cdce_rxeof_errors = 0;
 620
 621         usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
 622
 623         if (sc->cdce_flags & CDCE_ZAURUS)
 624                 total_len -= 4; /* Strip off CRC added by Zaurus */
 625
 626         m = c->ue_mbuf;
 627
 628         if (total_len < sizeof(struct ether_header)) {
 629                 ifp->if_ierrors++;
 630                 goto done;
 631         }
 632
 633         ifp->if_ipackets++;
 634         m->m_pkthdr.rcvif = (struct ifnet *)&sc->q;
 635         m->m_pkthdr.len = m->m_len = total_len;
 636
 637         /* Put the packet on the special USB input queue. */
 638         usb_ether_input(m);
 639         CDCE_UNLOCK(sc);
 640
 641         return;
 642
 643 done:
 644         /* Setup new transfer. */
 645         usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
 646             mtod(c->ue_mbuf, char *),
 647             UE_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT,
 648             cdce_rxeof);
 649         usbd_transfer(c->ue_xfer);
 650         CDCE_UNLOCK(sc);
 651
 652         return;
 653 }
 654
 655 Static void
 656 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
 657 {
 658         struct ue_chain *c = priv;
 659         struct cdce_softc       *sc = c->ue_sc;
 660         struct ifnet            *ifp;
 661         usbd_status              err;
 662
 663         CDCE_LOCK(sc);
 664         ifp = GET_IFP(sc);
 665
 666         if (sc->cdce_dying ||
 667                 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 668                 CDCE_UNLOCK(sc);
 669                 return;
 670         }
 671
 672         if (status != USBD_NORMAL_COMPLETION) {
 673                 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
 674                         CDCE_UNLOCK(sc);
 675                         return;
 676                 }
 677                 ifp->if_oerrors++;
 678                 printf("%s: usb error on tx: %s\n", USBDEVNAME(sc->cdce_dev),
 679                     usbd_errstr(status));
 680                 if (status == USBD_STALLED)
 681                         usbd_clear_endpoint_stall(sc->cdce_bulkout_pipe);
 682                 CDCE_UNLOCK(sc);
 683                 return;
 684         }
 685
 686         ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
 687         usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &err);
 688
 689         if (c->ue_mbuf != NULL) {
 690                 c->ue_mbuf->m_pkthdr.rcvif = ifp;
 691                 usb_tx_done(c->ue_mbuf);
 692                 c->ue_mbuf = NULL;
 693         }
 694
 695         if (err)
 696                 ifp->if_oerrors++;
 697         else
 698                 ifp->if_opackets++;
 699
 700         CDCE_UNLOCK(sc);
 701
 702         return;
 703 }
 704
 705 Static void
 706 cdce_rxstart(struct ifnet *ifp)
 707 {
 708         struct cdce_softc   *sc;
 709         struct ue_chain   *c;
 710
 711         sc = ifp->if_softc;
 712         CDCE_LOCK(sc);
 713
 714         if (sc->cdce_dying || !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
 715                 CDCE_UNLOCK(sc);
 716                 return;
 717         }
 718
 719         c = &sc->cdce_cdata.ue_rx_chain[sc->cdce_cdata.ue_rx_prod];
 720
 721         c->ue_mbuf = usb_ether_newbuf();
 722         if (c->ue_mbuf == NULL) {
 723                 printf("%s: no memory for rx list "
 724                     "-- packet dropped!\n", USBDEVNAME(sc->cdce_dev));
 725                 ifp->if_ierrors++;
 726                 CDCE_UNLOCK(sc);
 727                 return;
 728         }
 729
 730         usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
 731             mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK,
 732             USBD_NO_TIMEOUT, cdce_rxeof);
 733         usbd_transfer(c->ue_xfer);
 734
 735         CDCE_UNLOCK(sc);
 736         return;
 737 }
 738
 739 Static int
 740 cdce_ifmedia_upd(struct ifnet *ifp)
 741 {
 742
 743         /* no-op, cdce has only 1 possible media type */
 744         return 0;
 745 }
 746
 747 Static void
 748 cdce_ifmedia_sts(struct ifnet * const ifp, struct ifmediareq *req)
 749 {
 750
 751         req->ifm_status = IFM_AVALID | IFM_ACTIVE;
 752         req->ifm_active = IFM_ETHER | IFM_10_T;
 753 }