if_cdce.c revision 1.32
1 /* $NetBSD: if_cdce.c,v 1.32 2010/12/21 07:07:44 jnemeth 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 1.32 2010/12/21 07:07:44 jnemeth 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 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION }, 106 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION }, 107 }; 108 #define cdce_lookup(v, p) ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) 109 110 int cdce_match(device_t, cfdata_t, void *); 111 void cdce_attach(device_t, device_t, void *); 112 int cdce_detach(device_t, int); 113 int cdce_activate(device_t, enum devact); 114 extern struct cfdriver cdce_cd; 115 CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, 116 cdce_detach, cdce_activate); 117 118 int 119 cdce_match(device_t parent, cfdata_t match, void *aux) 120 { 121 struct usbif_attach_arg *uaa = aux; 122 123 if (cdce_lookup(uaa->vendor, uaa->product) != NULL) 124 return (UMATCH_VENDOR_PRODUCT); 125 126 if (uaa->class == UICLASS_CDC && uaa->subclass == 127 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) 128 return (UMATCH_IFACECLASS_GENERIC); 129 130 return (UMATCH_NONE); 131 } 132 133 void 134 cdce_attach(device_t parent, device_t self, void *aux) 135 { 136 struct cdce_softc *sc = device_private(self); 137 struct usbif_attach_arg *uaa = aux; 138 char *devinfop; 139 int s; 140 struct ifnet *ifp; 141 usbd_device_handle dev = uaa->device; 142 const struct cdce_type *t; 143 usb_interface_descriptor_t *id; 144 usb_endpoint_descriptor_t *ed; 145 const usb_cdc_union_descriptor_t *ud; 146 usb_config_descriptor_t *cd; 147 int data_ifcno; 148 int i, j, numalts; 149 u_char eaddr[ETHER_ADDR_LEN]; 150 const usb_cdc_ethernet_descriptor_t *ue; 151 char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; 152 153 sc->cdce_dev = self; 154 155 aprint_naive("\n"); 156 aprint_normal("\n"); 157 158 devinfop = usbd_devinfo_alloc(dev, 0); 159 aprint_normal_dev(self, "%s\n", devinfop); 160 usbd_devinfo_free(devinfop); 161 162 sc->cdce_udev = uaa->device; 163 sc->cdce_ctl_iface = uaa->iface; 164 165 t = cdce_lookup(uaa->vendor, uaa->product); 166 if (t) 167 sc->cdce_flags = t->cdce_flags; 168 169 if (sc->cdce_flags & CDCE_NO_UNION) 170 sc->cdce_data_iface = sc->cdce_ctl_iface; 171 else { 172 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, 173 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); 174 if (ud == NULL) { 175 aprint_error_dev(self, "no union descriptor\n"); 176 return; 177 } 178 data_ifcno = ud->bSlaveInterface[0]; 179 180 for (i = 0; i < uaa->nifaces; i++) { 181 if (uaa->ifaces[i] != NULL) { 182 id = usbd_get_interface_descriptor( 183 uaa->ifaces[i]); 184 if (id != NULL && id->bInterfaceNumber == 185 data_ifcno) { 186 sc->cdce_data_iface = uaa->ifaces[i]; 187 uaa->ifaces[i] = NULL; 188 } 189 } 190 } 191 } 192 193 if (sc->cdce_data_iface == NULL) { 194 aprint_error_dev(self, "no data interface\n"); 195 return; 196 } 197 198 /* 199 * <quote> 200 * The Data Class interface of a networking device shall have a minimum 201 * of two interface settings. The first setting (the default interface 202 * setting) includes no endpoints and therefore no networking traffic is 203 * exchanged whenever the default interface setting is selected. One or 204 * more additional interface settings are used for normal operation, and 205 * therefore each includes a pair of endpoints (one IN, and one OUT) to 206 * exchange network traffic. Select an alternate interface setting to 207 * initialize the network aspects of the device and to enable the 208 * exchange of network traffic. 209 * </quote> 210 * 211 * Some devices, most notably cable modems, include interface settings 212 * that have no IN or OUT endpoint, therefore loop through the list of all 213 * available interface settings looking for one with both IN and OUT 214 * endpoints. 215 */ 216 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 217 cd = usbd_get_config_descriptor(sc->cdce_udev); 218 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); 219 220 for (j = 0; j < numalts; j++) { 221 if (usbd_set_interface(sc->cdce_data_iface, j)) { 222 aprint_error_dev(sc->cdce_dev, 223 "setting alternate interface failed\n"); 224 return; 225 } 226 /* Find endpoints. */ 227 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 228 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; 229 for (i = 0; i < id->bNumEndpoints; i++) { 230 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); 231 if (!ed) { 232 aprint_error_dev(self, 233 "could not read endpoint descriptor\n"); 234 return; 235 } 236 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 237 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 238 sc->cdce_bulkin_no = ed->bEndpointAddress; 239 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 240 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 241 sc->cdce_bulkout_no = ed->bEndpointAddress; 242 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 243 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 244 /* XXX: CDC spec defines an interrupt pipe, but it is not 245 * needed for simple host-to-host applications. */ 246 } else { 247 aprint_error_dev(self, "unexpected endpoint\n"); 248 } 249 } 250 /* If we found something, try and use it... */ 251 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) 252 break; 253 } 254 255 if (sc->cdce_bulkin_no == -1) { 256 aprint_error_dev(self, "could not find data bulk in\n"); 257 return; 258 } 259 if (sc->cdce_bulkout_no == -1 ) { 260 aprint_error_dev(self, "could not find data bulk out\n"); 261 return; 262 } 263 264 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, 265 UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); 266 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || 267 ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { 268 aprint_normal_dev(self, "faking address\n"); 269 eaddr[0]= 0x2a; 270 memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); 271 eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); 272 } 273 274 s = splnet(); 275 276 aprint_normal_dev(self, "address %s\n", ether_sprintf(eaddr)); 277 278 ifp = GET_IFP(sc); 279 ifp->if_softc = sc; 280 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 281 ifp->if_ioctl = cdce_ioctl; 282 ifp->if_start = cdce_start; 283 ifp->if_watchdog = cdce_watchdog; 284 strncpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); 285 286 IFQ_SET_READY(&ifp->if_snd); 287 288 if_attach(ifp); 289 ether_ifattach(ifp, eaddr); 290 291 sc->cdce_attached = 1; 292 splx(s); 293 294 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, 295 sc->cdce_dev); 296 297 if (!pmf_device_register(self, NULL, NULL)) 298 aprint_error_dev(self, "couldn't establish power handler\n"); 299 300 return; 301 } 302 303 int 304 cdce_detach(device_t self, int flags) 305 { 306 struct cdce_softc *sc = device_private(self); 307 struct ifnet *ifp = GET_IFP(sc); 308 int s; 309 310 if (device_pmf_is_registered(self)) 311 pmf_device_deregister(self); 312 313 s = splusb(); 314 315 if (!sc->cdce_attached) { 316 splx(s); 317 return (0); 318 } 319 320 if (ifp->if_flags & IFF_RUNNING) 321 cdce_stop(sc); 322 323 ether_ifdetach(ifp); 324 325 if_detach(ifp); 326 327 sc->cdce_attached = 0; 328 splx(s); 329 330 return (0); 331 } 332 333 Static void 334 cdce_start(struct ifnet *ifp) 335 { 336 struct cdce_softc *sc = ifp->if_softc; 337 struct mbuf *m_head = NULL; 338 339 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 340 return; 341 342 IFQ_POLL(&ifp->if_snd, m_head); 343 if (m_head == NULL) 344 return; 345 346 if (cdce_encap(sc, m_head, 0)) { 347 ifp->if_flags |= IFF_OACTIVE; 348 return; 349 } 350 351 IFQ_DEQUEUE(&ifp->if_snd, m_head); 352 353 bpf_mtap(ifp, m_head); 354 355 ifp->if_flags |= IFF_OACTIVE; 356 357 ifp->if_timer = 6; 358 } 359 360 Static int 361 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 362 { 363 struct cdce_chain *c; 364 usbd_status err; 365 int extra = 0; 366 367 c = &sc->cdce_cdata.cdce_tx_chain[idx]; 368 369 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 370 if (sc->cdce_flags & CDCE_ZAURUS) { 371 /* Zaurus wants a 32-bit CRC appended to every frame */ 372 uint32_t crc; 373 374 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 375 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 376 extra = sizeof(crc); 377 } 378 c->cdce_mbuf = m; 379 380 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkout_pipe, c, c->cdce_buf, 381 m->m_pkthdr.len + extra, USBD_NO_COPY, 10000, cdce_txeof); 382 err = usbd_transfer(c->cdce_xfer); 383 if (err != USBD_IN_PROGRESS) { 384 cdce_stop(sc); 385 return (EIO); 386 } 387 388 sc->cdce_cdata.cdce_tx_cnt++; 389 390 return (0); 391 } 392 393 Static void 394 cdce_stop(struct cdce_softc *sc) 395 { 396 usbd_status err; 397 struct ifnet *ifp = GET_IFP(sc); 398 int i; 399 400 ifp->if_timer = 0; 401 402 if (sc->cdce_bulkin_pipe != NULL) { 403 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 404 if (err) 405 printf("%s: abort rx pipe failed: %s\n", 406 device_xname(sc->cdce_dev), usbd_errstr(err)); 407 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 408 if (err) 409 printf("%s: close rx pipe failed: %s\n", 410 device_xname(sc->cdce_dev), usbd_errstr(err)); 411 sc->cdce_bulkin_pipe = NULL; 412 } 413 414 if (sc->cdce_bulkout_pipe != NULL) { 415 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 416 if (err) 417 printf("%s: abort tx pipe failed: %s\n", 418 device_xname(sc->cdce_dev), usbd_errstr(err)); 419 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 420 if (err) 421 printf("%s: close tx pipe failed: %s\n", 422 device_xname(sc->cdce_dev), usbd_errstr(err)); 423 sc->cdce_bulkout_pipe = NULL; 424 } 425 426 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 427 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 428 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 429 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 430 } 431 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 432 usbd_free_xfer(sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 433 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 434 } 435 } 436 437 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 438 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 439 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 440 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 441 } 442 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 443 usbd_free_xfer(sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 444 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 445 } 446 } 447 448 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 449 } 450 451 Static int 452 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 453 { 454 struct cdce_softc *sc = ifp->if_softc; 455 struct ifaddr *ifa = (struct ifaddr *)data; 456 struct ifreq *ifr = (struct ifreq *)data; 457 int s, error = 0; 458 459 if (sc->cdce_dying) 460 return (EIO); 461 462 s = splnet(); 463 464 switch(command) { 465 case SIOCINITIFADDR: 466 ifp->if_flags |= IFF_UP; 467 cdce_init(sc); 468 switch (ifa->ifa_addr->sa_family) { 469 #ifdef INET 470 case AF_INET: 471 arp_ifinit(ifp, ifa); 472 break; 473 #endif /* INET */ 474 } 475 break; 476 477 case SIOCSIFMTU: 478 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 479 error = EINVAL; 480 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 481 error = 0; 482 break; 483 484 case SIOCSIFFLAGS: 485 if ((error = ifioctl_common(ifp, command, data)) != 0) 486 break; 487 /* XXX re-use ether_ioctl() */ 488 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 489 case IFF_UP: 490 cdce_init(sc); 491 break; 492 case IFF_RUNNING: 493 cdce_stop(sc); 494 break; 495 default: 496 break; 497 } 498 break; 499 500 default: 501 error = ether_ioctl(ifp, command, data); 502 break; 503 } 504 505 splx(s); 506 507 if (error == ENETRESET) 508 error = 0; 509 510 return (error); 511 } 512 513 Static void 514 cdce_watchdog(struct ifnet *ifp) 515 { 516 struct cdce_softc *sc = ifp->if_softc; 517 518 if (sc->cdce_dying) 519 return; 520 521 ifp->if_oerrors++; 522 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 523 } 524 525 Static void 526 cdce_init(void *xsc) 527 { 528 struct cdce_softc *sc = xsc; 529 struct ifnet *ifp = GET_IFP(sc); 530 struct cdce_chain *c; 531 usbd_status err; 532 int s, i; 533 534 if (ifp->if_flags & IFF_RUNNING) 535 return; 536 537 s = splnet(); 538 539 if (cdce_tx_list_init(sc) == ENOBUFS) { 540 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 541 splx(s); 542 return; 543 } 544 545 if (cdce_rx_list_init(sc) == ENOBUFS) { 546 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 547 splx(s); 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", device_xname(sc->cdce_dev), 557 usbd_errstr(err)); 558 splx(s); 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", 566 device_xname(sc->cdce_dev), usbd_errstr(err)); 567 splx(s); 568 return; 569 } 570 571 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 572 c = &sc->cdce_cdata.cdce_rx_chain[i]; 573 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, 574 c->cdce_buf, CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, 575 USBD_NO_TIMEOUT, cdce_rxeof); 576 usbd_transfer(c->cdce_xfer); 577 } 578 579 ifp->if_flags |= IFF_RUNNING; 580 ifp->if_flags &= ~IFF_OACTIVE; 581 582 splx(s); 583 } 584 585 Static int 586 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 587 { 588 struct mbuf *m_new = NULL; 589 590 if (m == NULL) { 591 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 592 if (m_new == NULL) { 593 printf("%s: no memory for rx list " 594 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 595 return (ENOBUFS); 596 } 597 MCLGET(m_new, M_DONTWAIT); 598 if (!(m_new->m_flags & M_EXT)) { 599 printf("%s: no memory for rx list " 600 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 601 m_freem(m_new); 602 return (ENOBUFS); 603 } 604 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 605 } else { 606 m_new = m; 607 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 608 m_new->m_data = m_new->m_ext.ext_buf; 609 } 610 c->cdce_mbuf = m_new; 611 return (0); 612 } 613 614 Static int 615 cdce_rx_list_init(struct cdce_softc *sc) 616 { 617 struct cdce_cdata *cd; 618 struct cdce_chain *c; 619 int i; 620 621 cd = &sc->cdce_cdata; 622 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 623 c = &cd->cdce_rx_chain[i]; 624 c->cdce_sc = sc; 625 c->cdce_idx = i; 626 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 627 return (ENOBUFS); 628 if (c->cdce_xfer == NULL) { 629 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 630 if (c->cdce_xfer == NULL) 631 return (ENOBUFS); 632 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 633 if (c->cdce_buf == NULL) 634 return (ENOBUFS); 635 } 636 } 637 638 return (0); 639 } 640 641 Static int 642 cdce_tx_list_init(struct cdce_softc *sc) 643 { 644 struct cdce_cdata *cd; 645 struct cdce_chain *c; 646 int i; 647 648 cd = &sc->cdce_cdata; 649 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 650 c = &cd->cdce_tx_chain[i]; 651 c->cdce_sc = sc; 652 c->cdce_idx = i; 653 c->cdce_mbuf = NULL; 654 if (c->cdce_xfer == NULL) { 655 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 656 if (c->cdce_xfer == NULL) 657 return (ENOBUFS); 658 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 659 if (c->cdce_buf == NULL) 660 return (ENOBUFS); 661 } 662 } 663 664 return (0); 665 } 666 667 Static void 668 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 669 { 670 struct cdce_chain *c = priv; 671 struct cdce_softc *sc = c->cdce_sc; 672 struct ifnet *ifp = GET_IFP(sc); 673 struct mbuf *m; 674 int total_len = 0; 675 int s; 676 677 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 678 return; 679 680 if (status != USBD_NORMAL_COMPLETION) { 681 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 682 return; 683 if (sc->cdce_rxeof_errors == 0) 684 printf("%s: usb error on rx: %s\n", 685 device_xname(sc->cdce_dev), usbd_errstr(status)); 686 if (status == USBD_STALLED) 687 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 688 DELAY(sc->cdce_rxeof_errors * 10000); 689 sc->cdce_rxeof_errors++; 690 goto done; 691 } 692 693 sc->cdce_rxeof_errors = 0; 694 695 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 696 if (sc->cdce_flags & CDCE_ZAURUS) 697 total_len -= 4; /* Strip off CRC added by Zaurus */ 698 if (total_len <= 1) 699 goto done; 700 701 m = c->cdce_mbuf; 702 memcpy(mtod(m, char *), c->cdce_buf, total_len); 703 704 if (total_len < sizeof(struct ether_header)) { 705 ifp->if_ierrors++; 706 goto done; 707 } 708 709 ifp->if_ipackets++; 710 m->m_pkthdr.len = m->m_len = total_len; 711 m->m_pkthdr.rcvif = ifp; 712 713 s = splnet(); 714 715 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 716 ifp->if_ierrors++; 717 goto done1; 718 } 719 720 bpf_mtap(ifp, m); 721 722 (*(ifp)->if_input)((ifp), (m)); 723 724 done1: 725 splx(s); 726 727 done: 728 /* Setup new transfer. */ 729 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, c->cdce_buf, 730 CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, 731 cdce_rxeof); 732 usbd_transfer(c->cdce_xfer); 733 } 734 735 Static void 736 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, 737 usbd_status status) 738 { 739 struct cdce_chain *c = priv; 740 struct cdce_softc *sc = c->cdce_sc; 741 struct ifnet *ifp = GET_IFP(sc); 742 usbd_status err; 743 int s; 744 745 if (sc->cdce_dying) 746 return; 747 748 s = splnet(); 749 750 ifp->if_timer = 0; 751 ifp->if_flags &= ~IFF_OACTIVE; 752 753 if (status != USBD_NORMAL_COMPLETION) { 754 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 755 splx(s); 756 return; 757 } 758 ifp->if_oerrors++; 759 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 760 usbd_errstr(status)); 761 if (status == USBD_STALLED) 762 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 763 splx(s); 764 return; 765 } 766 767 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 768 769 if (c->cdce_mbuf != NULL) { 770 m_freem(c->cdce_mbuf); 771 c->cdce_mbuf = NULL; 772 } 773 774 if (err) 775 ifp->if_oerrors++; 776 else 777 ifp->if_opackets++; 778 779 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 780 cdce_start(ifp); 781 782 splx(s); 783 } 784 785 int 786 cdce_activate(device_t self, enum devact act) 787 { 788 struct cdce_softc *sc = device_private(self); 789 790 switch (act) { 791 case DVACT_DEACTIVATE: 792 if_deactivate(GET_IFP(sc)); 793 sc->cdce_dying = 1; 794 return 0; 795 default: 796 return EOPNOTSUPP; 797 } 798 } 799
Indexes created Tue Sep 30 20:09:53 GMT 2025