Annotation of sys/dev/usb/if_cdce.c, Revision 1.1
1.1 ! nbrk 1: /* $OpenBSD: if_cdce.c,v 1.36 2007/07/25 21:22:20 claudio 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 <bpfilter.h>
! 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/socket.h>
! 52: #include <sys/device.h>
! 53: #include <sys/proc.h>
! 54:
! 55: #include <net/if.h>
! 56: #include <net/if_dl.h>
! 57:
! 58: #include <net/bpf.h>
! 59: #if NBPFILTER > 0
! 60: #endif
! 61:
! 62: #include <netinet/in.h>
! 63: #include <netinet/in_systm.h>
! 64: #include <netinet/in_var.h>
! 65: #include <netinet/ip.h>
! 66: #include <netinet/if_ether.h>
! 67:
! 68: #include <dev/usb/usb.h>
! 69: #include <dev/usb/usbdi.h>
! 70: #include <dev/usb/usbdi_util.h>
! 71: #include <dev/usb/usbdevs.h>
! 72: #include <dev/usb/usbcdc.h>
! 73:
! 74: #include <dev/usb/if_cdcereg.h>
! 75:
! 76: #ifdef CDCE_DEBUG
! 77: #define DPRINTFN(n, x) do { if (cdcedebug > (n)) printf x; } while (0)
! 78: int cdcedebug = 0;
! 79: #else
! 80: #define DPRINTFN(n, x)
! 81: #endif
! 82: #define DPRINTF(x) DPRINTFN(0, x)
! 83:
! 84: int cdce_tx_list_init(struct cdce_softc *);
! 85: int cdce_rx_list_init(struct cdce_softc *);
! 86: int cdce_newbuf(struct cdce_softc *, struct cdce_chain *,
! 87: struct mbuf *);
! 88: int cdce_encap(struct cdce_softc *, struct mbuf *, int);
! 89: void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
! 90: void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
! 91: void cdce_start(struct ifnet *);
! 92: int cdce_ioctl(struct ifnet *, u_long, caddr_t);
! 93: void cdce_init(void *);
! 94: void cdce_watchdog(struct ifnet *);
! 95: void cdce_stop(struct cdce_softc *);
! 96: void cdce_intr(usbd_xfer_handle, usbd_private_handle, usbd_status);
! 97: static uint32_t cdce_crc32(const void *, size_t);
! 98:
! 99: const struct cdce_type cdce_devs[] = {
! 100: {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, 0 },
! 101: {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, 0 },
! 102: {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS },
! 103: {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS },
! 104: {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS },
! 105: {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS },
! 106: {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS },
! 107: {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS },
! 108: {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS },
! 109: {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, 0 },
! 110: {{ USB_VENDOR_NETCHIP, USB_PRODUCT_NETCHIP_ETHERNETGADGET }, 0 },
! 111: {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, 0 },
! 112: {{ USB_VENDOR_AMBIT, USB_PRODUCT_AMBIT_NTL_250 }, CDCE_SWAPUNION },
! 113: };
! 114: #define cdce_lookup(v, p) ((const struct cdce_type *)usb_lookup(cdce_devs, v, p))
! 115:
! 116: int cdce_match(struct device *, void *, void *);
! 117: void cdce_attach(struct device *, struct device *, void *);
! 118: int cdce_detach(struct device *, int);
! 119: int cdce_activate(struct device *, enum devact);
! 120:
! 121: struct cfdriver cdce_cd = {
! 122: NULL, "cdce", DV_IFNET
! 123: };
! 124:
! 125: const struct cfattach cdce_ca = {
! 126: sizeof(struct cdce_softc),
! 127: cdce_match,
! 128: cdce_attach,
! 129: cdce_detach,
! 130: cdce_activate,
! 131: };
! 132:
! 133: int
! 134: cdce_match(struct device *parent, void *match, void *aux)
! 135: {
! 136: struct usb_attach_arg *uaa = aux;
! 137: usb_interface_descriptor_t *id;
! 138:
! 139: if (uaa->iface == NULL)
! 140: return (UMATCH_NONE);
! 141:
! 142: id = usbd_get_interface_descriptor(uaa->iface);
! 143: if (id == NULL)
! 144: return (UMATCH_NONE);
! 145:
! 146: if (cdce_lookup(uaa->vendor, uaa->product) != NULL)
! 147: return (UMATCH_VENDOR_PRODUCT);
! 148:
! 149: if (id->bInterfaceClass == UICLASS_CDC && id->bInterfaceSubClass ==
! 150: UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL)
! 151: return (UMATCH_IFACECLASS_GENERIC);
! 152:
! 153: return (UMATCH_NONE);
! 154: }
! 155:
! 156: void
! 157: cdce_attach(struct device *parent, struct device *self, void *aux)
! 158: {
! 159: struct cdce_softc *sc = (struct cdce_softc *)self;
! 160: struct usb_attach_arg *uaa = aux;
! 161: char *devinfop;
! 162: int s;
! 163: struct ifnet *ifp;
! 164: usbd_device_handle dev = uaa->device;
! 165: const struct cdce_type *t;
! 166: usb_interface_descriptor_t *id;
! 167: usb_endpoint_descriptor_t *ed;
! 168: usb_cdc_union_descriptor_t *ud;
! 169: usb_cdc_ethernet_descriptor_t *ethd;
! 170: usb_config_descriptor_t *cd;
! 171: const usb_descriptor_t *desc;
! 172: usbd_desc_iter_t iter;
! 173: usb_string_descriptor_t eaddr_str;
! 174: u_int16_t macaddr_hi;
! 175: int i, j, numalts, len;
! 176: int ctl_ifcno = -1;
! 177: int data_ifcno = -1;
! 178:
! 179: devinfop = usbd_devinfo_alloc(dev, 0);
! 180: printf("\n%s: %s\n", sc->cdce_dev.dv_xname, devinfop);
! 181: usbd_devinfo_free(devinfop);
! 182:
! 183: sc->cdce_udev = uaa->device;
! 184: sc->cdce_ctl_iface = uaa->iface;
! 185: id = usbd_get_interface_descriptor(sc->cdce_ctl_iface);
! 186: ctl_ifcno = id->bInterfaceNumber;
! 187:
! 188: t = cdce_lookup(uaa->vendor, uaa->product);
! 189: if (t)
! 190: sc->cdce_flags = t->cdce_flags;
! 191:
! 192: /* Get the data interface no. and capabilities */
! 193: ethd = NULL;
! 194: usb_desc_iter_init(dev, &iter);
! 195: desc = usb_desc_iter_next(&iter);
! 196: while (desc) {
! 197: if (desc->bDescriptorType != UDESC_CS_INTERFACE) {
! 198: desc = usb_desc_iter_next(&iter);
! 199: continue;
! 200: }
! 201: switch(desc->bDescriptorSubtype) {
! 202: case UDESCSUB_CDC_UNION:
! 203: ud = (usb_cdc_union_descriptor_t *)desc;
! 204: if ((sc->cdce_flags & CDCE_SWAPUNION) == 0 &&
! 205: ud->bMasterInterface == ctl_ifcno)
! 206: data_ifcno = ud->bSlaveInterface[0];
! 207: if ((sc->cdce_flags & CDCE_SWAPUNION) &&
! 208: ud->bSlaveInterface[0] == ctl_ifcno)
! 209: data_ifcno = ud->bMasterInterface;
! 210: break;
! 211: case UDESCSUB_CDC_ENF:
! 212: if (ethd) {
! 213: printf("%s: ", sc->cdce_dev.dv_xname);
! 214: printf("extra ethernet descriptor\n");
! 215: return;
! 216: }
! 217: ethd = (usb_cdc_ethernet_descriptor_t *)desc;
! 218: break;
! 219: }
! 220: desc = usb_desc_iter_next(&iter);
! 221: }
! 222:
! 223: if (data_ifcno == -1) {
! 224: DPRINTF(("cdce_attach: no union interface\n"));
! 225: sc->cdce_data_iface = sc->cdce_ctl_iface;
! 226: } else {
! 227: DPRINTF(("cdce_attach: union interface: ctl=%d, data=%d\n",
! 228: ctl_ifcno, data_ifcno));
! 229: for (i = 0; i < uaa->nifaces; i++) {
! 230: if (uaa->ifaces[i] != NULL) {
! 231: id = usbd_get_interface_descriptor(
! 232: uaa->ifaces[i]);
! 233: if (id != NULL && id->bInterfaceNumber ==
! 234: data_ifcno) {
! 235: sc->cdce_data_iface = uaa->ifaces[i];
! 236: uaa->ifaces[i] = NULL;
! 237: }
! 238: }
! 239: }
! 240: }
! 241:
! 242: if (sc->cdce_data_iface == NULL) {
! 243: printf("%s: no data interface\n", sc->cdce_dev.dv_xname);
! 244: return;
! 245: }
! 246:
! 247: id = usbd_get_interface_descriptor(sc->cdce_ctl_iface);
! 248: sc->cdce_intr_no = -1;
! 249: for (i = 0; i < id->bNumEndpoints && sc->cdce_intr_no == -1; i++) {
! 250: ed = usbd_interface2endpoint_descriptor(sc->cdce_ctl_iface, i);
! 251: if (!ed) {
! 252: printf("%s: no descriptor for interrupt endpoint %d\n",
! 253: sc->cdce_dev.dv_xname, i);
! 254: return;
! 255: }
! 256: if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
! 257: UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
! 258: sc->cdce_intr_no = ed->bEndpointAddress;
! 259: sc->cdce_intr_size = sizeof(sc->cdce_intr_buf);
! 260: }
! 261: }
! 262:
! 263: id = usbd_get_interface_descriptor(sc->cdce_data_iface);
! 264: cd = usbd_get_config_descriptor(sc->cdce_udev);
! 265: numalts = usbd_get_no_alts(cd, id->bInterfaceNumber);
! 266:
! 267: for (j = 0; j < numalts; j++) {
! 268: if (usbd_set_interface(sc->cdce_data_iface, j)) {
! 269: printf("%s: interface alternate setting %d failed\n",
! 270: sc->cdce_dev.dv_xname, j);
! 271: return;
! 272: }
! 273: /* Find endpoints. */
! 274: id = usbd_get_interface_descriptor(sc->cdce_data_iface);
! 275: sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1;
! 276: for (i = 0; i < id->bNumEndpoints; i++) {
! 277: ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i);
! 278: if (!ed) {
! 279: printf("%s: no descriptor for bulk endpoint %d\n",
! 280: sc->cdce_dev.dv_xname, i);
! 281: return;
! 282: }
! 283: if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
! 284: UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
! 285: sc->cdce_bulkin_no = ed->bEndpointAddress;
! 286: } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
! 287: UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
! 288: sc->cdce_bulkout_no = ed->bEndpointAddress;
! 289: }
! 290: #ifdef CDCE_DEBUG
! 291: else if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN &&
! 292: UE_GET_XFERTYPE(ed->bmAttributes) != UE_INTERRUPT) {
! 293: printf("%s: unexpected endpoint, ep=%x attr=%x\n",
! 294: sc->cdce_dev.dv_xname, ed->bEndpointAddress,
! 295: ed->bmAttributes);
! 296: }
! 297: #endif
! 298: }
! 299: if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) {
! 300: DPRINTF(("cdce_attach: intr=0x%x, in=0x%x, out=0x%x\n",
! 301: sc->cdce_intr_no, sc->cdce_bulkin_no, sc->cdce_bulkout_no));
! 302: goto found;
! 303: }
! 304: }
! 305:
! 306: if (sc->cdce_bulkin_no == -1) {
! 307: printf("%s: could not find data bulk in\n",
! 308: sc->cdce_dev.dv_xname);
! 309: return;
! 310: }
! 311: if (sc->cdce_bulkout_no == -1 ) {
! 312: printf("%s: could not find data bulk out\n",
! 313: sc->cdce_dev.dv_xname);
! 314: return;
! 315: }
! 316:
! 317: found:
! 318: s = splnet();
! 319:
! 320: if (!ethd || usbd_get_string_desc(sc->cdce_udev, ethd->iMacAddress, 0,
! 321: &eaddr_str, &len)) {
! 322: macaddr_hi = htons(0x2acb);
! 323: bcopy(&macaddr_hi, &sc->cdce_arpcom.ac_enaddr[0],
! 324: sizeof(u_int16_t));
! 325: bcopy(&ticks, &sc->cdce_arpcom.ac_enaddr[2], sizeof(u_int32_t));
! 326: sc->cdce_arpcom.ac_enaddr[5] = (u_int8_t)(sc->cdce_unit);
! 327: } else {
! 328: for (i = 0; i < ETHER_ADDR_LEN * 2; i++) {
! 329: int c = UGETW(eaddr_str.bString[i]);
! 330:
! 331: if ('0' <= c && c <= '9')
! 332: c -= '0';
! 333: else if ('A' <= c && c <= 'F')
! 334: c -= 'A' - 10;
! 335: else if ('a' <= c && c <= 'f')
! 336: c -= 'a' - 10;
! 337: c &= 0xf;
! 338: if (i % 2 == 0)
! 339: c <<= 4;
! 340: sc->cdce_arpcom.ac_enaddr[i / 2] |= c;
! 341: }
! 342: }
! 343:
! 344: printf("%s: address %s\n", sc->cdce_dev.dv_xname,
! 345: ether_sprintf(sc->cdce_arpcom.ac_enaddr));
! 346:
! 347: ifp = GET_IFP(sc);
! 348: ifp->if_softc = sc;
! 349: ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
! 350: ifp->if_ioctl = cdce_ioctl;
! 351: ifp->if_start = cdce_start;
! 352: ifp->if_watchdog = cdce_watchdog;
! 353: strlcpy(ifp->if_xname, sc->cdce_dev.dv_xname, IFNAMSIZ);
! 354:
! 355: IFQ_SET_READY(&ifp->if_snd);
! 356:
! 357: if_attach(ifp);
! 358: ether_ifattach(ifp);
! 359:
! 360: sc->cdce_attached = 1;
! 361: splx(s);
! 362:
! 363: usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev,
! 364: &sc->cdce_dev);
! 365: }
! 366:
! 367: int
! 368: cdce_detach(struct device *self, int flags)
! 369: {
! 370: struct cdce_softc *sc = (struct cdce_softc *)self;
! 371: struct ifnet *ifp = GET_IFP(sc);
! 372: int s;
! 373:
! 374: s = splusb();
! 375:
! 376: if (!sc->cdce_attached) {
! 377: splx(s);
! 378: return (0);
! 379: }
! 380:
! 381: if (ifp->if_flags & IFF_RUNNING)
! 382: cdce_stop(sc);
! 383:
! 384: ether_ifdetach(ifp);
! 385:
! 386: if_detach(ifp);
! 387:
! 388: sc->cdce_attached = 0;
! 389: splx(s);
! 390:
! 391: return (0);
! 392: }
! 393:
! 394: void
! 395: cdce_start(struct ifnet *ifp)
! 396: {
! 397: struct cdce_softc *sc = ifp->if_softc;
! 398: struct mbuf *m_head = NULL;
! 399:
! 400: if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE))
! 401: return;
! 402:
! 403: IFQ_POLL(&ifp->if_snd, m_head);
! 404: if (m_head == NULL)
! 405: return;
! 406:
! 407: if (cdce_encap(sc, m_head, 0)) {
! 408: ifp->if_flags |= IFF_OACTIVE;
! 409: return;
! 410: }
! 411:
! 412: IFQ_DEQUEUE(&ifp->if_snd, m_head);
! 413:
! 414: #if NBPFILTER > 0
! 415: if (ifp->if_bpf)
! 416: bpf_mtap(ifp->if_bpf, m_head, BPF_DIRECTION_OUT);
! 417: #endif
! 418:
! 419: ifp->if_flags |= IFF_OACTIVE;
! 420:
! 421: ifp->if_timer = 6;
! 422: }
! 423:
! 424: int
! 425: cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx)
! 426: {
! 427: struct cdce_chain *c;
! 428: usbd_status err;
! 429: int extra = 0;
! 430:
! 431: c = &sc->cdce_cdata.cdce_tx_chain[idx];
! 432:
! 433: m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf);
! 434: if (sc->cdce_flags & CDCE_ZAURUS) {
! 435: /* Zaurus wants a 32-bit CRC appended to every frame */
! 436: u_int32_t crc;
! 437:
! 438: crc = cdce_crc32(c->cdce_buf, m->m_pkthdr.len);
! 439: bcopy(&crc, c->cdce_buf + m->m_pkthdr.len, 4);
! 440: extra = 4;
! 441: }
! 442: c->cdce_mbuf = m;
! 443:
! 444: usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkout_pipe, c, c->cdce_buf,
! 445: m->m_pkthdr.len + extra, USBD_FORCE_SHORT_XFER | USBD_NO_COPY,
! 446: 10000, cdce_txeof);
! 447: err = usbd_transfer(c->cdce_xfer);
! 448: if (err != USBD_IN_PROGRESS) {
! 449: cdce_stop(sc);
! 450: return (EIO);
! 451: }
! 452:
! 453: sc->cdce_cdata.cdce_tx_cnt++;
! 454:
! 455: return (0);
! 456: }
! 457:
! 458: void
! 459: cdce_stop(struct cdce_softc *sc)
! 460: {
! 461: usbd_status err;
! 462: struct ifnet *ifp = GET_IFP(sc);
! 463: int i;
! 464:
! 465: ifp->if_timer = 0;
! 466: ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE);
! 467:
! 468: if (sc->cdce_bulkin_pipe != NULL) {
! 469: err = usbd_abort_pipe(sc->cdce_bulkin_pipe);
! 470: if (err)
! 471: printf("%s: abort rx pipe failed: %s\n",
! 472: sc->cdce_dev.dv_xname, usbd_errstr(err));
! 473: err = usbd_close_pipe(sc->cdce_bulkin_pipe);
! 474: if (err)
! 475: printf("%s: close rx pipe failed: %s\n",
! 476: sc->cdce_dev.dv_xname, usbd_errstr(err));
! 477: sc->cdce_bulkin_pipe = NULL;
! 478: }
! 479:
! 480: if (sc->cdce_bulkout_pipe != NULL) {
! 481: err = usbd_abort_pipe(sc->cdce_bulkout_pipe);
! 482: if (err)
! 483: printf("%s: abort tx pipe failed: %s\n",
! 484: sc->cdce_dev.dv_xname, usbd_errstr(err));
! 485: err = usbd_close_pipe(sc->cdce_bulkout_pipe);
! 486: if (err)
! 487: printf("%s: close tx pipe failed: %s\n",
! 488: sc->cdce_dev.dv_xname, usbd_errstr(err));
! 489: sc->cdce_bulkout_pipe = NULL;
! 490: }
! 491:
! 492: if (sc->cdce_intr_pipe != NULL) {
! 493: err = usbd_abort_pipe(sc->cdce_intr_pipe);
! 494: if (err)
! 495: printf("%s: abort interrupt pipe failed: %s\n",
! 496: sc->cdce_dev.dv_xname, usbd_errstr(err));
! 497: err = usbd_close_pipe(sc->cdce_intr_pipe);
! 498: if (err)
! 499: printf("%s: close interrupt pipe failed: %s\n",
! 500: sc->cdce_dev.dv_xname, usbd_errstr(err));
! 501: sc->cdce_intr_pipe = NULL;
! 502: }
! 503:
! 504: for (i = 0; i < CDCE_RX_LIST_CNT; i++) {
! 505: if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) {
! 506: m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf);
! 507: sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL;
! 508: }
! 509: if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) {
! 510: usbd_free_xfer(sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer);
! 511: sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL;
! 512: }
! 513: }
! 514:
! 515: for (i = 0; i < CDCE_TX_LIST_CNT; i++) {
! 516: if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) {
! 517: m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf);
! 518: sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL;
! 519: }
! 520: if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) {
! 521: usbd_free_xfer(sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer);
! 522: sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL;
! 523: }
! 524: }
! 525: }
! 526:
! 527: int
! 528: cdce_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
! 529: {
! 530: struct cdce_softc *sc = ifp->if_softc;
! 531: struct ifaddr *ifa = (struct ifaddr *)data;
! 532: struct ifreq *ifr = (struct ifreq *)data;
! 533: int s, error = 0;
! 534:
! 535: if (sc->cdce_dying)
! 536: return (EIO);
! 537:
! 538: s = splnet();
! 539:
! 540: switch(command) {
! 541: case SIOCSIFADDR:
! 542: ifp->if_flags |= IFF_UP;
! 543: cdce_init(sc);
! 544: switch (ifa->ifa_addr->sa_family) {
! 545: case AF_INET:
! 546: arp_ifinit(&sc->cdce_arpcom, ifa);
! 547: break;
! 548: }
! 549: break;
! 550:
! 551: case SIOCSIFMTU:
! 552: if (ifr->ifr_mtu > ETHERMTU)
! 553: error = EINVAL;
! 554: else
! 555: ifp->if_mtu = ifr->ifr_mtu;
! 556: break;
! 557:
! 558: case SIOCSIFFLAGS:
! 559: if (ifp->if_flags & IFF_UP) {
! 560: if (!(ifp->if_flags & IFF_RUNNING))
! 561: cdce_init(sc);
! 562: } else {
! 563: if (ifp->if_flags & IFF_RUNNING)
! 564: cdce_stop(sc);
! 565: }
! 566: error = 0;
! 567: break;
! 568:
! 569: case SIOCADDMULTI:
! 570: case SIOCDELMULTI:
! 571: error = (command == SIOCADDMULTI) ?
! 572: ether_addmulti(ifr, &sc->cdce_arpcom) :
! 573: ether_delmulti(ifr, &sc->cdce_arpcom);
! 574:
! 575: if (error == ENETRESET)
! 576: error = 0;
! 577: break;
! 578:
! 579: default:
! 580: error = EINVAL;
! 581: break;
! 582: }
! 583:
! 584: splx(s);
! 585:
! 586: return (error);
! 587: }
! 588:
! 589: void
! 590: cdce_watchdog(struct ifnet *ifp)
! 591: {
! 592: struct cdce_softc *sc = ifp->if_softc;
! 593:
! 594: if (sc->cdce_dying)
! 595: return;
! 596:
! 597: ifp->if_oerrors++;
! 598: printf("%s: watchdog timeout\n", sc->cdce_dev.dv_xname);
! 599: }
! 600:
! 601: void
! 602: cdce_init(void *xsc)
! 603: {
! 604: struct cdce_softc *sc = xsc;
! 605: struct ifnet *ifp = GET_IFP(sc);
! 606: struct cdce_chain *c;
! 607: usbd_status err;
! 608: int s, i;
! 609:
! 610: if (ifp->if_flags & IFF_RUNNING)
! 611: return;
! 612:
! 613: s = splnet();
! 614:
! 615: if (sc->cdce_intr_no != -1 && sc->cdce_intr_pipe == NULL) {
! 616: DPRINTFN(1, ("cdce_init: establish interrupt pipe\n"));
! 617: err = usbd_open_pipe_intr(sc->cdce_ctl_iface, sc->cdce_intr_no,
! 618: USBD_SHORT_XFER_OK, &sc->cdce_intr_pipe, sc,
! 619: &sc->cdce_intr_buf, sc->cdce_intr_size, cdce_intr,
! 620: USBD_DEFAULT_INTERVAL);
! 621: if (err) {
! 622: printf("%s: open interrupt pipe failed: %s\n",
! 623: sc->cdce_dev.dv_xname, usbd_errstr(err));
! 624: splx(s);
! 625: return;
! 626: }
! 627: }
! 628:
! 629: if (cdce_tx_list_init(sc) == ENOBUFS) {
! 630: printf("%s: tx list init failed\n", sc->cdce_dev.dv_xname);
! 631: splx(s);
! 632: return;
! 633: }
! 634:
! 635: if (cdce_rx_list_init(sc) == ENOBUFS) {
! 636: printf("%s: rx list init failed\n", sc->cdce_dev.dv_xname);
! 637: splx(s);
! 638: return;
! 639: }
! 640:
! 641: /* Maybe set multicast / broadcast here??? */
! 642:
! 643: err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no,
! 644: USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe);
! 645: if (err) {
! 646: printf("%s: open rx pipe failed: %s\n", sc->cdce_dev.dv_xname,
! 647: usbd_errstr(err));
! 648: splx(s);
! 649: return;
! 650: }
! 651:
! 652: err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no,
! 653: USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe);
! 654: if (err) {
! 655: printf("%s: open tx pipe failed: %s\n", sc->cdce_dev.dv_xname,
! 656: usbd_errstr(err));
! 657: splx(s);
! 658: return;
! 659: }
! 660:
! 661: for (i = 0; i < CDCE_RX_LIST_CNT; i++) {
! 662: c = &sc->cdce_cdata.cdce_rx_chain[i];
! 663: usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c,
! 664: c->cdce_buf, CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY,
! 665: USBD_NO_TIMEOUT, cdce_rxeof);
! 666: usbd_transfer(c->cdce_xfer);
! 667: }
! 668:
! 669: ifp->if_flags |= IFF_RUNNING;
! 670: ifp->if_flags &= ~IFF_OACTIVE;
! 671:
! 672: splx(s);
! 673: }
! 674:
! 675: int
! 676: cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m)
! 677: {
! 678: struct mbuf *m_new = NULL;
! 679:
! 680: if (m == NULL) {
! 681: MGETHDR(m_new, M_DONTWAIT, MT_DATA);
! 682: if (m_new == NULL) {
! 683: printf("%s: no memory for rx list "
! 684: "-- packet dropped!\n", sc->cdce_dev.dv_xname);
! 685: return (ENOBUFS);
! 686: }
! 687: MCLGET(m_new, M_DONTWAIT);
! 688: if (!(m_new->m_flags & M_EXT)) {
! 689: printf("%s: no memory for rx list "
! 690: "-- packet dropped!\n", sc->cdce_dev.dv_xname);
! 691: m_freem(m_new);
! 692: return (ENOBUFS);
! 693: }
! 694: m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
! 695: } else {
! 696: m_new = m;
! 697: m_new->m_len = m_new->m_pkthdr.len = MCLBYTES;
! 698: m_new->m_data = m_new->m_ext.ext_buf;
! 699: }
! 700:
! 701: m_adj(m_new, ETHER_ALIGN);
! 702: c->cdce_mbuf = m_new;
! 703: return (0);
! 704: }
! 705:
! 706: int
! 707: cdce_rx_list_init(struct cdce_softc *sc)
! 708: {
! 709: struct cdce_cdata *cd;
! 710: struct cdce_chain *c;
! 711: int i;
! 712:
! 713: cd = &sc->cdce_cdata;
! 714: for (i = 0; i < CDCE_RX_LIST_CNT; i++) {
! 715: c = &cd->cdce_rx_chain[i];
! 716: c->cdce_sc = sc;
! 717: c->cdce_idx = i;
! 718: if (cdce_newbuf(sc, c, NULL) == ENOBUFS)
! 719: return (ENOBUFS);
! 720: if (c->cdce_xfer == NULL) {
! 721: c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev);
! 722: if (c->cdce_xfer == NULL)
! 723: return (ENOBUFS);
! 724: c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ);
! 725: if (c->cdce_buf == NULL)
! 726: return (ENOBUFS);
! 727: }
! 728: }
! 729:
! 730: return (0);
! 731: }
! 732:
! 733: int
! 734: cdce_tx_list_init(struct cdce_softc *sc)
! 735: {
! 736: struct cdce_cdata *cd;
! 737: struct cdce_chain *c;
! 738: int i;
! 739:
! 740: cd = &sc->cdce_cdata;
! 741: for (i = 0; i < CDCE_TX_LIST_CNT; i++) {
! 742: c = &cd->cdce_tx_chain[i];
! 743: c->cdce_sc = sc;
! 744: c->cdce_idx = i;
! 745: c->cdce_mbuf = NULL;
! 746: if (c->cdce_xfer == NULL) {
! 747: c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev);
! 748: if (c->cdce_xfer == NULL)
! 749: return (ENOBUFS);
! 750: c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ);
! 751: if (c->cdce_buf == NULL)
! 752: return (ENOBUFS);
! 753: }
! 754: }
! 755:
! 756: return (0);
! 757: }
! 758:
! 759: void
! 760: cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
! 761: {
! 762: struct cdce_chain *c = priv;
! 763: struct cdce_softc *sc = c->cdce_sc;
! 764: struct ifnet *ifp = GET_IFP(sc);
! 765: struct mbuf *m;
! 766: int total_len = 0;
! 767: int s;
! 768:
! 769: if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING))
! 770: return;
! 771:
! 772: if (status != USBD_NORMAL_COMPLETION) {
! 773: if (status == USBD_NOT_STARTED || status == USBD_CANCELLED)
! 774: return;
! 775: if (sc->cdce_rxeof_errors == 0)
! 776: printf("%s: usb error on rx: %s\n",
! 777: sc->cdce_dev.dv_xname, usbd_errstr(status));
! 778: if (status == USBD_STALLED)
! 779: usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe);
! 780: DELAY(sc->cdce_rxeof_errors * 10000);
! 781: if (sc->cdce_rxeof_errors++ > 10) {
! 782: printf("%s: too many errors, disabling\n",
! 783: sc->cdce_dev.dv_xname);
! 784: sc->cdce_dying = 1;
! 785: return;
! 786: }
! 787: goto done;
! 788: }
! 789:
! 790: sc->cdce_rxeof_errors = 0;
! 791:
! 792: usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
! 793: if (sc->cdce_flags & CDCE_ZAURUS)
! 794: total_len -= 4; /* Strip off CRC added by Zaurus */
! 795: if (total_len <= 1)
! 796: goto done;
! 797:
! 798: m = c->cdce_mbuf;
! 799: memcpy(mtod(m, char *), c->cdce_buf, total_len);
! 800:
! 801: if (total_len < sizeof(struct ether_header)) {
! 802: ifp->if_ierrors++;
! 803: goto done;
! 804: }
! 805:
! 806: ifp->if_ipackets++;
! 807:
! 808: m->m_pkthdr.len = m->m_len = total_len;
! 809: m->m_pkthdr.rcvif = ifp;
! 810:
! 811: s = splnet();
! 812:
! 813: if (cdce_newbuf(sc, c, NULL) == ENOBUFS) {
! 814: ifp->if_ierrors++;
! 815: goto done1;
! 816: }
! 817:
! 818: #if NBPFILTER > 0
! 819: if (ifp->if_bpf)
! 820: bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN);
! 821: #endif
! 822:
! 823: ether_input_mbuf(ifp, m);
! 824:
! 825: done1:
! 826: splx(s);
! 827:
! 828: done:
! 829: /* Setup new transfer. */
! 830: usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, c->cdce_buf,
! 831: CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT,
! 832: cdce_rxeof);
! 833: usbd_transfer(c->cdce_xfer);
! 834: }
! 835:
! 836: void
! 837: cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
! 838: {
! 839: struct cdce_chain *c = priv;
! 840: struct cdce_softc *sc = c->cdce_sc;
! 841: struct ifnet *ifp = GET_IFP(sc);
! 842: usbd_status err;
! 843: int s;
! 844:
! 845: if (sc->cdce_dying)
! 846: return;
! 847:
! 848: s = splnet();
! 849:
! 850: ifp->if_timer = 0;
! 851: ifp->if_flags &= ~IFF_OACTIVE;
! 852:
! 853: if (status != USBD_NORMAL_COMPLETION) {
! 854: if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
! 855: splx(s);
! 856: return;
! 857: }
! 858: ifp->if_oerrors++;
! 859: printf("%s: usb error on tx: %s\n", sc->cdce_dev.dv_xname,
! 860: usbd_errstr(status));
! 861: if (status == USBD_STALLED)
! 862: usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe);
! 863: splx(s);
! 864: return;
! 865: }
! 866:
! 867: usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err);
! 868:
! 869: if (c->cdce_mbuf != NULL) {
! 870: m_freem(c->cdce_mbuf);
! 871: c->cdce_mbuf = NULL;
! 872: }
! 873:
! 874: if (err)
! 875: ifp->if_oerrors++;
! 876: else
! 877: ifp->if_opackets++;
! 878:
! 879: if (IFQ_IS_EMPTY(&ifp->if_snd) == 0)
! 880: cdce_start(ifp);
! 881:
! 882: splx(s);
! 883: }
! 884:
! 885: int
! 886: cdce_activate(struct device *self, enum devact act)
! 887: {
! 888: struct cdce_softc *sc = (struct cdce_softc *)self;
! 889:
! 890: switch (act) {
! 891: case DVACT_ACTIVATE:
! 892: break;
! 893:
! 894: case DVACT_DEACTIVATE:
! 895: sc->cdce_dying = 1;
! 896: break;
! 897: }
! 898: return (0);
! 899: }
! 900:
! 901: void
! 902: cdce_intr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
! 903: {
! 904: struct cdce_softc *sc = addr;
! 905: usb_cdc_notification_t *buf = &sc->cdce_intr_buf;
! 906: usb_cdc_connection_speed_t *speed;
! 907: u_int32_t count;
! 908:
! 909: if (status == USBD_CANCELLED)
! 910: return;
! 911:
! 912: if (status != USBD_NORMAL_COMPLETION) {
! 913: DPRINTFN(2, ("cdce_intr: status=%d\n", status));
! 914: if (status == USBD_STALLED)
! 915: usbd_clear_endpoint_stall_async(sc->cdce_intr_pipe);
! 916: return;
! 917: }
! 918:
! 919: usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
! 920:
! 921: if (buf->bmRequestType == UCDC_NOTIFICATION) {
! 922: switch (buf->bNotification) {
! 923: case UCDC_N_NETWORK_CONNECTION:
! 924: DPRINTFN(1, ("cdce_intr: network %s\n",
! 925: UGETW(buf->wValue) ? "connected" : "disconnected"));
! 926: break;
! 927: case UCDC_N_CONNECTION_SPEED_CHANGE:
! 928: speed = (usb_cdc_connection_speed_t *)&buf->data;
! 929: DPRINTFN(1, ("cdce_intr: up=%d, down=%d\n",
! 930: UGETDW(speed->dwUSBitRate),
! 931: UGETDW(speed->dwDSBitRate)));
! 932: break;
! 933: default:
! 934: DPRINTF(("cdce_intr: bNotification 0x%x\n",
! 935: buf->bNotification));
! 936: }
! 937: }
! 938: #ifdef CDCE_DEBUG
! 939: else {
! 940: printf("cdce_intr: bmRequestType=%d ", buf->bmRequestType);
! 941: printf("wValue=%d wIndex=%d wLength=%d\n", UGETW(buf->wValue),
! 942: UGETW(buf->wIndex), UGETW(buf->wLength));
! 943: }
! 944: #endif
! 945: }
! 946:
! 947:
! 948: /* COPYRIGHT (C) 1986 Gary S. Brown. You may use this program, or
! 949: * code or tables extracted from it, as desired without restriction.
! 950: */
! 951:
! 952: static uint32_t cdce_crc32_tab[] = {
! 953: 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
! 954: 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
! 955: 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
! 956: 0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
! 957: 0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
! 958: 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
! 959: 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
! 960: 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
! 961: 0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
! 962: 0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
! 963: 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
! 964: 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
! 965: 0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
! 966: 0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
! 967: 0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
! 968: 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
! 969: 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
! 970: 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
! 971: 0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
! 972: 0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
! 973: 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
! 974: 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
! 975: 0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
! 976: 0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
! 977: 0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
! 978: 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
! 979: 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
! 980: 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
! 981: 0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
! 982: 0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
! 983: 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
! 984: 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
! 985: 0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
! 986: 0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
! 987: 0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
! 988: 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
! 989: 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
! 990: 0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
! 991: 0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
! 992: 0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
! 993: 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
! 994: 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
! 995: 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
! 996: };
! 997:
! 998: uint32_t
! 999: cdce_crc32(const void *buf, size_t size)
! 1000: {
! 1001: const uint8_t *p;
! 1002: uint32_t crc;
! 1003:
! 1004: p = buf;
! 1005: crc = ~0U;
! 1006:
! 1007: while (size--)
! 1008: crc = cdce_crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
! 1009:
! 1010: return (htole32(crc) ^ ~0U);
! 1011: }
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