if_cdce.c revision 1.27.2.2
1 /* $NetBSD: if_cdce.c,v 1.27.2.2 2010/08/17 06:46:43 uebayasi Exp $ */ 2 3 /* 4 * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul (at) windriver.com> 5 * Copyright (c) 2003 Craig Boston 6 * Copyright (c) 2004 Daniel Hartmeier 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by Bill Paul. 20 * 4. Neither the name of the author nor the names of any co-contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul, THE VOICES IN HIS HEAD OR 28 * THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 31 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 33 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 34 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 /* 38 * USB Communication Device Class (Ethernet Networking Control Model) 39 * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf 40 * 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: if_cdce.c,v 1.27.2.2 2010/08/17 06:46:43 uebayasi Exp $"); 45 #ifdef __NetBSD__ 46 #include "opt_inet.h" 47 #endif 48 49 #include <sys/param.h> 50 #include <sys/systm.h> 51 #include <sys/sockio.h> 52 #include <sys/mbuf.h> 53 #include <sys/malloc.h> 54 #include <sys/kernel.h> 55 #include <sys/socket.h> 56 #include <sys/device.h> 57 58 #if NRND > 0 59 #include <sys/rnd.h> 60 #endif 61 62 #include <net/if.h> 63 #include <net/if_arp.h> 64 #include <net/if_dl.h> 65 #include <net/if_media.h> 66 67 #include <net/bpf.h> 68 69 #include <net/if_ether.h> 70 #ifdef INET 71 #include <netinet/in.h> 72 #include <netinet/if_inarp.h> 73 #endif 74 75 76 77 #include <dev/usb/usb.h> 78 #include <dev/usb/usbdi.h> 79 #include <dev/usb/usbdi_util.h> 80 #include <dev/usb/usbdevs.h> 81 #include <dev/usb/usbcdc.h> 82 83 #include <dev/usb/if_cdcereg.h> 84 85 Static int cdce_tx_list_init(struct cdce_softc *); 86 Static int cdce_rx_list_init(struct cdce_softc *); 87 Static int cdce_newbuf(struct cdce_softc *, struct cdce_chain *, 88 struct mbuf *); 89 Static int cdce_encap(struct cdce_softc *, struct mbuf *, int); 90 Static void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 91 Static void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 92 Static void cdce_start(struct ifnet *); 93 Static int cdce_ioctl(struct ifnet *, u_long, void *); 94 Static void cdce_init(void *); 95 Static void cdce_watchdog(struct ifnet *); 96 Static void cdce_stop(struct cdce_softc *); 97 98 Static const struct cdce_type cdce_devs[] = { 99 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, 100 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, 101 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, 102 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, 103 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, 104 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, 105 }; 106 #define cdce_lookup(v, p) ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) 107 108 int cdce_match(device_t, cfdata_t, void *); 109 void cdce_attach(device_t, device_t, void *); 110 int cdce_detach(device_t, int); 111 int cdce_activate(device_t, enum devact); 112 extern struct cfdriver cdce_cd; 113 CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, 114 cdce_detach, cdce_activate); 115 116 int 117 cdce_match(device_t parent, cfdata_t match, void *aux) 118 { 119 struct usbif_attach_arg *uaa = aux; 120 121 if (cdce_lookup(uaa->vendor, uaa->product) != NULL) 122 return (UMATCH_VENDOR_PRODUCT); 123 124 if (uaa->class == UICLASS_CDC && uaa->subclass == 125 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) 126 return (UMATCH_IFACECLASS_GENERIC); 127 128 return (UMATCH_NONE); 129 } 130 131 void 132 cdce_attach(device_t parent, device_t self, void *aux) 133 { 134 struct cdce_softc *sc = device_private(self); 135 struct usbif_attach_arg *uaa = aux; 136 char *devinfop; 137 int s; 138 struct ifnet *ifp; 139 usbd_device_handle dev = uaa->device; 140 const struct cdce_type *t; 141 usb_interface_descriptor_t *id; 142 usb_endpoint_descriptor_t *ed; 143 const usb_cdc_union_descriptor_t *ud; 144 usb_config_descriptor_t *cd; 145 int data_ifcno; 146 int i, j, numalts; 147 u_char eaddr[ETHER_ADDR_LEN]; 148 const usb_cdc_ethernet_descriptor_t *ue; 149 char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; 150 151 sc->cdce_dev = self; 152 153 aprint_naive("\n"); 154 aprint_normal("\n"); 155 156 devinfop = usbd_devinfo_alloc(dev, 0); 157 aprint_normal_dev(self, "%s\n", devinfop); 158 usbd_devinfo_free(devinfop); 159 160 sc->cdce_udev = uaa->device; 161 sc->cdce_ctl_iface = uaa->iface; 162 163 t = cdce_lookup(uaa->vendor, uaa->product); 164 if (t) 165 sc->cdce_flags = t->cdce_flags; 166 167 if (sc->cdce_flags & CDCE_NO_UNION) 168 sc->cdce_data_iface = sc->cdce_ctl_iface; 169 else { 170 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, 171 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); 172 if (ud == NULL) { 173 aprint_error_dev(self, "no union descriptor\n"); 174 return; 175 } 176 data_ifcno = ud->bSlaveInterface[0]; 177 178 for (i = 0; i < uaa->nifaces; i++) { 179 if (uaa->ifaces[i] != NULL) { 180 id = usbd_get_interface_descriptor( 181 uaa->ifaces[i]); 182 if (id != NULL && id->bInterfaceNumber == 183 data_ifcno) { 184 sc->cdce_data_iface = uaa->ifaces[i]; 185 uaa->ifaces[i] = NULL; 186 } 187 } 188 } 189 } 190 191 if (sc->cdce_data_iface == NULL) { 192 aprint_error_dev(self, "no data interface\n"); 193 return; 194 } 195 196 /* 197 * <quote> 198 * The Data Class interface of a networking device shall have a minimum 199 * of two interface settings. The first setting (the default interface 200 * setting) includes no endpoints and therefore no networking traffic is 201 * exchanged whenever the default interface setting is selected. One or 202 * more additional interface settings are used for normal operation, and 203 * therefore each includes a pair of endpoints (one IN, and one OUT) to 204 * exchange network traffic. Select an alternate interface setting to 205 * initialize the network aspects of the device and to enable the 206 * exchange of network traffic. 207 * </quote> 208 * 209 * Some devices, most notably cable modems, include interface settings 210 * that have no IN or OUT endpoint, therefore loop through the list of all 211 * available interface settings looking for one with both IN and OUT 212 * endpoints. 213 */ 214 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 215 cd = usbd_get_config_descriptor(sc->cdce_udev); 216 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); 217 218 for (j = 0; j < numalts; j++) { 219 if (usbd_set_interface(sc->cdce_data_iface, j)) { 220 aprint_error_dev(sc->cdce_dev, 221 "setting alternate interface failed\n"); 222 return; 223 } 224 /* Find endpoints. */ 225 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 226 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; 227 for (i = 0; i < id->bNumEndpoints; i++) { 228 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); 229 if (!ed) { 230 aprint_error_dev(self, 231 "could not read endpoint descriptor\n"); 232 return; 233 } 234 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 235 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 236 sc->cdce_bulkin_no = ed->bEndpointAddress; 237 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 238 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 239 sc->cdce_bulkout_no = ed->bEndpointAddress; 240 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 241 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 242 /* XXX: CDC spec defines an interrupt pipe, but it is not 243 * needed for simple host-to-host applications. */ 244 } else { 245 aprint_error_dev(self, "unexpected endpoint\n"); 246 } 247 } 248 /* If we found something, try and use it... */ 249 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) 250 break; 251 } 252 253 if (sc->cdce_bulkin_no == -1) { 254 aprint_error_dev(self, "could not find data bulk in\n"); 255 return; 256 } 257 if (sc->cdce_bulkout_no == -1 ) { 258 aprint_error_dev(self, "could not find data bulk out\n"); 259 return; 260 } 261 262 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, 263 UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); 264 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || 265 ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { 266 aprint_normal_dev(self, "faking address\n"); 267 eaddr[0]= 0x2a; 268 memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); 269 eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); 270 } 271 272 s = splnet(); 273 274 aprint_normal_dev(self, "address %s\n", ether_sprintf(eaddr)); 275 276 ifp = GET_IFP(sc); 277 ifp->if_softc = sc; 278 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 279 ifp->if_ioctl = cdce_ioctl; 280 ifp->if_start = cdce_start; 281 ifp->if_watchdog = cdce_watchdog; 282 strncpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); 283 284 IFQ_SET_READY(&ifp->if_snd); 285 286 if_attach(ifp); 287 ether_ifattach(ifp, eaddr); 288 289 sc->cdce_attached = 1; 290 splx(s); 291 292 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, 293 sc->cdce_dev); 294 295 if (!pmf_device_register(self, NULL, NULL)) 296 aprint_error_dev(self, "couldn't establish power handler\n"); 297 298 return; 299 } 300 301 int 302 cdce_detach(device_t self, int flags) 303 { 304 struct cdce_softc *sc = device_private(self); 305 struct ifnet *ifp = GET_IFP(sc); 306 int s; 307 308 if (device_pmf_is_registered(self)) 309 pmf_device_deregister(self); 310 311 s = splusb(); 312 313 if (!sc->cdce_attached) { 314 splx(s); 315 return (0); 316 } 317 318 if (ifp->if_flags & IFF_RUNNING) 319 cdce_stop(sc); 320 321 ether_ifdetach(ifp); 322 323 if_detach(ifp); 324 325 sc->cdce_attached = 0; 326 splx(s); 327 328 return (0); 329 } 330 331 Static void 332 cdce_start(struct ifnet *ifp) 333 { 334 struct cdce_softc *sc = ifp->if_softc; 335 struct mbuf *m_head = NULL; 336 337 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 338 return; 339 340 IFQ_POLL(&ifp->if_snd, m_head); 341 if (m_head == NULL) 342 return; 343 344 if (cdce_encap(sc, m_head, 0)) { 345 ifp->if_flags |= IFF_OACTIVE; 346 return; 347 } 348 349 IFQ_DEQUEUE(&ifp->if_snd, m_head); 350 351 bpf_mtap(ifp, m_head); 352 353 ifp->if_flags |= IFF_OACTIVE; 354 355 ifp->if_timer = 6; 356 } 357 358 Static int 359 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 360 { 361 struct cdce_chain *c; 362 usbd_status err; 363 int extra = 0; 364 365 c = &sc->cdce_cdata.cdce_tx_chain[idx]; 366 367 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 368 if (sc->cdce_flags & CDCE_ZAURUS) { 369 /* Zaurus wants a 32-bit CRC appended to every frame */ 370 uint32_t crc; 371 372 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 373 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 374 extra = sizeof(crc); 375 } 376 c->cdce_mbuf = m; 377 378 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkout_pipe, c, c->cdce_buf, 379 m->m_pkthdr.len + extra, USBD_NO_COPY, 10000, cdce_txeof); 380 err = usbd_transfer(c->cdce_xfer); 381 if (err != USBD_IN_PROGRESS) { 382 cdce_stop(sc); 383 return (EIO); 384 } 385 386 sc->cdce_cdata.cdce_tx_cnt++; 387 388 return (0); 389 } 390 391 Static void 392 cdce_stop(struct cdce_softc *sc) 393 { 394 usbd_status err; 395 struct ifnet *ifp = GET_IFP(sc); 396 int i; 397 398 ifp->if_timer = 0; 399 400 if (sc->cdce_bulkin_pipe != NULL) { 401 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 402 if (err) 403 printf("%s: abort rx pipe failed: %s\n", 404 device_xname(sc->cdce_dev), usbd_errstr(err)); 405 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 406 if (err) 407 printf("%s: close rx pipe failed: %s\n", 408 device_xname(sc->cdce_dev), usbd_errstr(err)); 409 sc->cdce_bulkin_pipe = NULL; 410 } 411 412 if (sc->cdce_bulkout_pipe != NULL) { 413 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 414 if (err) 415 printf("%s: abort tx pipe failed: %s\n", 416 device_xname(sc->cdce_dev), usbd_errstr(err)); 417 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 418 if (err) 419 printf("%s: close tx pipe failed: %s\n", 420 device_xname(sc->cdce_dev), usbd_errstr(err)); 421 sc->cdce_bulkout_pipe = NULL; 422 } 423 424 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 425 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 426 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 427 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 428 } 429 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 430 usbd_free_xfer(sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 431 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 432 } 433 } 434 435 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 436 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 437 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 438 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 439 } 440 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 441 usbd_free_xfer(sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 442 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 443 } 444 } 445 446 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 447 } 448 449 Static int 450 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 451 { 452 struct cdce_softc *sc = ifp->if_softc; 453 struct ifaddr *ifa = (struct ifaddr *)data; 454 struct ifreq *ifr = (struct ifreq *)data; 455 int s, error = 0; 456 457 if (sc->cdce_dying) 458 return (EIO); 459 460 s = splnet(); 461 462 switch(command) { 463 case SIOCINITIFADDR: 464 ifp->if_flags |= IFF_UP; 465 cdce_init(sc); 466 switch (ifa->ifa_addr->sa_family) { 467 #ifdef INET 468 case AF_INET: 469 arp_ifinit(ifp, ifa); 470 break; 471 #endif /* INET */ 472 } 473 break; 474 475 case SIOCSIFMTU: 476 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 477 error = EINVAL; 478 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 479 error = 0; 480 break; 481 482 case SIOCSIFFLAGS: 483 if ((error = ifioctl_common(ifp, command, data)) != 0) 484 break; 485 /* XXX re-use ether_ioctl() */ 486 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 487 case IFF_UP: 488 cdce_init(sc); 489 break; 490 case IFF_RUNNING: 491 cdce_stop(sc); 492 break; 493 default: 494 break; 495 } 496 break; 497 498 default: 499 error = ether_ioctl(ifp, command, data); 500 break; 501 } 502 503 splx(s); 504 505 if (error == ENETRESET) 506 error = 0; 507 508 return (error); 509 } 510 511 Static void 512 cdce_watchdog(struct ifnet *ifp) 513 { 514 struct cdce_softc *sc = ifp->if_softc; 515 516 if (sc->cdce_dying) 517 return; 518 519 ifp->if_oerrors++; 520 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 521 } 522 523 Static void 524 cdce_init(void *xsc) 525 { 526 struct cdce_softc *sc = xsc; 527 struct ifnet *ifp = GET_IFP(sc); 528 struct cdce_chain *c; 529 usbd_status err; 530 int s, i; 531 532 if (ifp->if_flags & IFF_RUNNING) 533 return; 534 535 s = splnet(); 536 537 if (cdce_tx_list_init(sc) == ENOBUFS) { 538 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 539 splx(s); 540 return; 541 } 542 543 if (cdce_rx_list_init(sc) == ENOBUFS) { 544 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 545 splx(s); 546 return; 547 } 548 549 /* Maybe set multicast / broadcast here??? */ 550 551 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 552 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 553 if (err) { 554 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 555 usbd_errstr(err)); 556 splx(s); 557 return; 558 } 559 560 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 561 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 562 if (err) { 563 printf("%s: open tx pipe failed: %s\n", 564 device_xname(sc->cdce_dev), usbd_errstr(err)); 565 splx(s); 566 return; 567 } 568 569 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 570 c = &sc->cdce_cdata.cdce_rx_chain[i]; 571 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, 572 c->cdce_buf, CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, 573 USBD_NO_TIMEOUT, cdce_rxeof); 574 usbd_transfer(c->cdce_xfer); 575 } 576 577 ifp->if_flags |= IFF_RUNNING; 578 ifp->if_flags &= ~IFF_OACTIVE; 579 580 splx(s); 581 } 582 583 Static int 584 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 585 { 586 struct mbuf *m_new = NULL; 587 588 if (m == NULL) { 589 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 590 if (m_new == NULL) { 591 printf("%s: no memory for rx list " 592 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 593 return (ENOBUFS); 594 } 595 MCLGET(m_new, M_DONTWAIT); 596 if (!(m_new->m_flags & M_EXT)) { 597 printf("%s: no memory for rx list " 598 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 599 m_freem(m_new); 600 return (ENOBUFS); 601 } 602 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 603 } else { 604 m_new = m; 605 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 606 m_new->m_data = m_new->m_ext.ext_buf; 607 } 608 c->cdce_mbuf = m_new; 609 return (0); 610 } 611 612 Static int 613 cdce_rx_list_init(struct cdce_softc *sc) 614 { 615 struct cdce_cdata *cd; 616 struct cdce_chain *c; 617 int i; 618 619 cd = &sc->cdce_cdata; 620 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 621 c = &cd->cdce_rx_chain[i]; 622 c->cdce_sc = sc; 623 c->cdce_idx = i; 624 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 625 return (ENOBUFS); 626 if (c->cdce_xfer == NULL) { 627 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 628 if (c->cdce_xfer == NULL) 629 return (ENOBUFS); 630 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 631 if (c->cdce_buf == NULL) 632 return (ENOBUFS); 633 } 634 } 635 636 return (0); 637 } 638 639 Static int 640 cdce_tx_list_init(struct cdce_softc *sc) 641 { 642 struct cdce_cdata *cd; 643 struct cdce_chain *c; 644 int i; 645 646 cd = &sc->cdce_cdata; 647 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 648 c = &cd->cdce_tx_chain[i]; 649 c->cdce_sc = sc; 650 c->cdce_idx = i; 651 c->cdce_mbuf = NULL; 652 if (c->cdce_xfer == NULL) { 653 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 654 if (c->cdce_xfer == NULL) 655 return (ENOBUFS); 656 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 657 if (c->cdce_buf == NULL) 658 return (ENOBUFS); 659 } 660 } 661 662 return (0); 663 } 664 665 Static void 666 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 667 { 668 struct cdce_chain *c = priv; 669 struct cdce_softc *sc = c->cdce_sc; 670 struct ifnet *ifp = GET_IFP(sc); 671 struct mbuf *m; 672 int total_len = 0; 673 int s; 674 675 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 676 return; 677 678 if (status != USBD_NORMAL_COMPLETION) { 679 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 680 return; 681 if (sc->cdce_rxeof_errors == 0) 682 printf("%s: usb error on rx: %s\n", 683 device_xname(sc->cdce_dev), usbd_errstr(status)); 684 if (status == USBD_STALLED) 685 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 686 DELAY(sc->cdce_rxeof_errors * 10000); 687 sc->cdce_rxeof_errors++; 688 goto done; 689 } 690 691 sc->cdce_rxeof_errors = 0; 692 693 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 694 if (sc->cdce_flags & CDCE_ZAURUS) 695 total_len -= 4; /* Strip off CRC added by Zaurus */ 696 if (total_len <= 1) 697 goto done; 698 699 m = c->cdce_mbuf; 700 memcpy(mtod(m, char *), c->cdce_buf, total_len); 701 702 if (total_len < sizeof(struct ether_header)) { 703 ifp->if_ierrors++; 704 goto done; 705 } 706 707 ifp->if_ipackets++; 708 m->m_pkthdr.len = m->m_len = total_len; 709 m->m_pkthdr.rcvif = ifp; 710 711 s = splnet(); 712 713 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 714 ifp->if_ierrors++; 715 goto done1; 716 } 717 718 bpf_mtap(ifp, m); 719 720 (*(ifp)->if_input)((ifp), (m)); 721 722 done1: 723 splx(s); 724 725 done: 726 /* Setup new transfer. */ 727 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, c->cdce_buf, 728 CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, 729 cdce_rxeof); 730 usbd_transfer(c->cdce_xfer); 731 } 732 733 Static void 734 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, 735 usbd_status status) 736 { 737 struct cdce_chain *c = priv; 738 struct cdce_softc *sc = c->cdce_sc; 739 struct ifnet *ifp = GET_IFP(sc); 740 usbd_status err; 741 int s; 742 743 if (sc->cdce_dying) 744 return; 745 746 s = splnet(); 747 748 ifp->if_timer = 0; 749 ifp->if_flags &= ~IFF_OACTIVE; 750 751 if (status != USBD_NORMAL_COMPLETION) { 752 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 753 splx(s); 754 return; 755 } 756 ifp->if_oerrors++; 757 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 758 usbd_errstr(status)); 759 if (status == USBD_STALLED) 760 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 761 splx(s); 762 return; 763 } 764 765 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 766 767 if (c->cdce_mbuf != NULL) { 768 m_freem(c->cdce_mbuf); 769 c->cdce_mbuf = NULL; 770 } 771 772 if (err) 773 ifp->if_oerrors++; 774 else 775 ifp->if_opackets++; 776 777 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 778 cdce_start(ifp); 779 780 splx(s); 781 } 782 783 int 784 cdce_activate(device_t self, enum devact act) 785 { 786 struct cdce_softc *sc = device_private(self); 787 788 switch (act) { 789 case DVACT_DEACTIVATE: 790 if_deactivate(GET_IFP(sc)); 791 sc->cdce_dying = 1; 792 return 0; 793 default: 794 return EOPNOTSUPP; 795 } 796 } 797
Indexes created Tue Sep 30 20:09:53 GMT 2025