if_cdce.c revision 1.33.6.2
1 /* $NetBSD: if_cdce.c,v 1.33.6.2 2012/02/24 09:11:42 mrg 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 1.33.6.2 2012/02/24 09:11:42 mrg Exp $"); 45 46 #if defined(_KERNEL_OPT) 47 #include "opt_inet.h" 48 #endif 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/sockio.h> 53 #include <sys/mbuf.h> 54 #include <sys/kernel.h> 55 #include <sys/socket.h> 56 #include <sys/device.h> 57 58 #include <sys/rnd.h> 59 60 #include <net/if.h> 61 #include <net/if_arp.h> 62 #include <net/if_dl.h> 63 #include <net/if_media.h> 64 65 #include <net/bpf.h> 66 67 #include <net/if_ether.h> 68 #ifdef INET 69 #include <netinet/in.h> 70 #include <netinet/if_inarp.h> 71 #endif 72 73 74 75 #include <dev/usb/usb.h> 76 #include <dev/usb/usbdi.h> 77 #include <dev/usb/usbdi_util.h> 78 #include <dev/usb/usbdevs.h> 79 #include <dev/usb/usbcdc.h> 80 81 #include <dev/usb/if_cdcereg.h> 82 83 Static int cdce_tx_list_init(struct cdce_softc *); 84 Static int cdce_rx_list_init(struct cdce_softc *); 85 Static int cdce_newbuf(struct cdce_softc *, struct cdce_chain *, 86 struct mbuf *); 87 Static int cdce_encap(struct cdce_softc *, struct mbuf *, int); 88 Static void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 89 Static void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 90 Static void cdce_start(struct ifnet *); 91 Static int cdce_ioctl(struct ifnet *, u_long, void *); 92 Static void cdce_init(void *); 93 Static void cdce_watchdog(struct ifnet *); 94 Static void cdce_stop(struct cdce_softc *); 95 96 Static const struct cdce_type cdce_devs[] = { 97 {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION }, 98 {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION }, 99 {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION }, 100 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION }, 101 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION }, 102 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, 103 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, 104 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, 105 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, 106 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, 107 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, 108 }; 109 #define cdce_lookup(v, p) \ 110 ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) 111 112 int cdce_match(device_t, cfdata_t, void *); 113 void cdce_attach(device_t, device_t, void *); 114 int cdce_detach(device_t, int); 115 int cdce_activate(device_t, enum devact); 116 extern struct cfdriver cdce_cd; 117 CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, 118 cdce_detach, cdce_activate); 119 120 int 121 cdce_match(device_t parent, cfdata_t match, void *aux) 122 { 123 struct usbif_attach_arg *uaa = aux; 124 125 if (cdce_lookup(uaa->vendor, uaa->product) != NULL) 126 return (UMATCH_VENDOR_PRODUCT); 127 128 if (uaa->class == UICLASS_CDC && uaa->subclass == 129 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) 130 return (UMATCH_IFACECLASS_GENERIC); 131 132 return (UMATCH_NONE); 133 } 134 135 void 136 cdce_attach(device_t parent, device_t self, void *aux) 137 { 138 struct cdce_softc *sc = device_private(self); 139 struct usbif_attach_arg *uaa = aux; 140 char *devinfop; 141 int s; 142 struct ifnet *ifp; 143 usbd_device_handle dev = uaa->device; 144 const struct cdce_type *t; 145 usb_interface_descriptor_t *id; 146 usb_endpoint_descriptor_t *ed; 147 const usb_cdc_union_descriptor_t *ud; 148 usb_config_descriptor_t *cd; 149 int data_ifcno; 150 int i, j, numalts; 151 u_char eaddr[ETHER_ADDR_LEN]; 152 const usb_cdc_ethernet_descriptor_t *ue; 153 char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; 154 155 sc->cdce_dev = self; 156 157 aprint_naive("\n"); 158 aprint_normal("\n"); 159 160 devinfop = usbd_devinfo_alloc(dev, 0); 161 aprint_normal_dev(self, "%s\n", devinfop); 162 usbd_devinfo_free(devinfop); 163 164 sc->cdce_udev = uaa->device; 165 sc->cdce_ctl_iface = uaa->iface; 166 167 t = cdce_lookup(uaa->vendor, uaa->product); 168 if (t) 169 sc->cdce_flags = t->cdce_flags; 170 171 if (sc->cdce_flags & CDCE_NO_UNION) 172 sc->cdce_data_iface = sc->cdce_ctl_iface; 173 else { 174 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, 175 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); 176 if (ud == NULL) { 177 aprint_error_dev(self, "no union descriptor\n"); 178 return; 179 } 180 data_ifcno = ud->bSlaveInterface[0]; 181 182 for (i = 0; i < uaa->nifaces; i++) { 183 if (uaa->ifaces[i] != NULL) { 184 id = usbd_get_interface_descriptor( 185 uaa->ifaces[i]); 186 if (id != NULL && id->bInterfaceNumber == 187 data_ifcno) { 188 sc->cdce_data_iface = uaa->ifaces[i]; 189 uaa->ifaces[i] = NULL; 190 } 191 } 192 } 193 } 194 195 if (sc->cdce_data_iface == NULL) { 196 aprint_error_dev(self, "no data interface\n"); 197 return; 198 } 199 200 /* 201 * <quote> 202 * The Data Class interface of a networking device shall have a minimum 203 * of two interface settings. The first setting (the default interface 204 * setting) includes no endpoints and therefore no networking traffic is 205 * exchanged whenever the default interface setting is selected. One or 206 * more additional interface settings are used for normal operation, and 207 * therefore each includes a pair of endpoints (one IN, and one OUT) to 208 * exchange network traffic. Select an alternate interface setting to 209 * initialize the network aspects of the device and to enable the 210 * exchange of network traffic. 211 * </quote> 212 * 213 * Some devices, most notably cable modems, include interface settings 214 * that have no IN or OUT endpoint, therefore loop through the list of all 215 * available interface settings looking for one with both IN and OUT 216 * endpoints. 217 */ 218 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 219 cd = usbd_get_config_descriptor(sc->cdce_udev); 220 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); 221 222 for (j = 0; j < numalts; j++) { 223 if (usbd_set_interface(sc->cdce_data_iface, j)) { 224 aprint_error_dev(sc->cdce_dev, 225 "setting alternate interface failed\n"); 226 return; 227 } 228 /* Find endpoints. */ 229 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 230 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; 231 for (i = 0; i < id->bNumEndpoints; i++) { 232 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); 233 if (!ed) { 234 aprint_error_dev(self, 235 "could not read endpoint descriptor\n"); 236 return; 237 } 238 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 239 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 240 sc->cdce_bulkin_no = ed->bEndpointAddress; 241 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 242 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 243 sc->cdce_bulkout_no = ed->bEndpointAddress; 244 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 245 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 246 /* XXX: CDC spec defines an interrupt pipe, but it is not 247 * needed for simple host-to-host applications. */ 248 } else { 249 aprint_error_dev(self, "unexpected endpoint\n"); 250 } 251 } 252 /* If we found something, try and use it... */ 253 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) 254 break; 255 } 256 257 if (sc->cdce_bulkin_no == -1) { 258 aprint_error_dev(self, "could not find data bulk in\n"); 259 return; 260 } 261 if (sc->cdce_bulkout_no == -1 ) { 262 aprint_error_dev(self, "could not find data bulk out\n"); 263 return; 264 } 265 266 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, 267 UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); 268 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || 269 ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { 270 aprint_normal_dev(self, "faking address\n"); 271 eaddr[0]= 0x2a; 272 memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); 273 eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); 274 } 275 276 s = splnet(); 277 278 aprint_normal_dev(self, "address %s\n", ether_sprintf(eaddr)); 279 280 ifp = GET_IFP(sc); 281 ifp->if_softc = sc; 282 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 283 ifp->if_ioctl = cdce_ioctl; 284 ifp->if_start = cdce_start; 285 ifp->if_watchdog = cdce_watchdog; 286 strncpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); 287 288 IFQ_SET_READY(&ifp->if_snd); 289 290 if_attach(ifp); 291 ether_ifattach(ifp, eaddr); 292 293 sc->cdce_attached = 1; 294 splx(s); 295 296 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, 297 sc->cdce_dev); 298 299 if (!pmf_device_register(self, NULL, NULL)) 300 aprint_error_dev(self, "couldn't establish power handler\n"); 301 302 return; 303 } 304 305 int 306 cdce_detach(device_t self, int flags) 307 { 308 struct cdce_softc *sc = device_private(self); 309 struct ifnet *ifp = GET_IFP(sc); 310 int s; 311 312 if (device_pmf_is_registered(self)) 313 pmf_device_deregister(self); 314 315 s = splusb(); 316 317 if (!sc->cdce_attached) { 318 splx(s); 319 return (0); 320 } 321 322 if (ifp->if_flags & IFF_RUNNING) 323 cdce_stop(sc); 324 325 ether_ifdetach(ifp); 326 327 if_detach(ifp); 328 329 sc->cdce_attached = 0; 330 splx(s); 331 332 return (0); 333 } 334 335 Static void 336 cdce_start(struct ifnet *ifp) 337 { 338 struct cdce_softc *sc = ifp->if_softc; 339 struct mbuf *m_head = NULL; 340 341 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 342 return; 343 344 IFQ_POLL(&ifp->if_snd, m_head); 345 if (m_head == NULL) 346 return; 347 348 if (cdce_encap(sc, m_head, 0)) { 349 ifp->if_flags |= IFF_OACTIVE; 350 return; 351 } 352 353 IFQ_DEQUEUE(&ifp->if_snd, m_head); 354 355 bpf_mtap(ifp, m_head); 356 357 ifp->if_flags |= IFF_OACTIVE; 358 359 ifp->if_timer = 6; 360 } 361 362 Static int 363 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 364 { 365 struct cdce_chain *c; 366 usbd_status err; 367 int extra = 0; 368 369 c = &sc->cdce_cdata.cdce_tx_chain[idx]; 370 371 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 372 if (sc->cdce_flags & CDCE_ZAURUS) { 373 /* Zaurus wants a 32-bit CRC appended to every frame */ 374 uint32_t crc; 375 376 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 377 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 378 extra = sizeof(crc); 379 } 380 c->cdce_mbuf = m; 381 382 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkout_pipe, c, c->cdce_buf, 383 m->m_pkthdr.len + extra, USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 384 10000, cdce_txeof); 385 err = usbd_transfer(c->cdce_xfer); 386 if (err != USBD_IN_PROGRESS) { 387 cdce_stop(sc); 388 return (EIO); 389 } 390 391 sc->cdce_cdata.cdce_tx_cnt++; 392 393 return (0); 394 } 395 396 Static void 397 cdce_stop(struct cdce_softc *sc) 398 { 399 usbd_status err; 400 struct ifnet *ifp = GET_IFP(sc); 401 int i; 402 403 ifp->if_timer = 0; 404 405 if (sc->cdce_bulkin_pipe != NULL) { 406 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 407 if (err) 408 printf("%s: abort rx pipe failed: %s\n", 409 device_xname(sc->cdce_dev), usbd_errstr(err)); 410 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 411 if (err) 412 printf("%s: close rx pipe failed: %s\n", 413 device_xname(sc->cdce_dev), usbd_errstr(err)); 414 sc->cdce_bulkin_pipe = NULL; 415 } 416 417 if (sc->cdce_bulkout_pipe != NULL) { 418 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 419 if (err) 420 printf("%s: abort tx pipe failed: %s\n", 421 device_xname(sc->cdce_dev), usbd_errstr(err)); 422 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 423 if (err) 424 printf("%s: close tx pipe failed: %s\n", 425 device_xname(sc->cdce_dev), usbd_errstr(err)); 426 sc->cdce_bulkout_pipe = NULL; 427 } 428 429 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 430 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 431 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 432 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 433 } 434 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 435 usbd_free_xfer 436 (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 437 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 438 } 439 } 440 441 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 442 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 443 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 444 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 445 } 446 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 447 usbd_free_xfer( 448 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 449 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 450 } 451 } 452 453 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 454 } 455 456 Static int 457 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 458 { 459 struct cdce_softc *sc = ifp->if_softc; 460 struct ifaddr *ifa = (struct ifaddr *)data; 461 struct ifreq *ifr = (struct ifreq *)data; 462 int s, error = 0; 463 464 if (sc->cdce_dying) 465 return (EIO); 466 467 s = splnet(); 468 469 switch(command) { 470 case SIOCINITIFADDR: 471 ifp->if_flags |= IFF_UP; 472 cdce_init(sc); 473 switch (ifa->ifa_addr->sa_family) { 474 #ifdef INET 475 case AF_INET: 476 arp_ifinit(ifp, ifa); 477 break; 478 #endif /* INET */ 479 } 480 break; 481 482 case SIOCSIFMTU: 483 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 484 error = EINVAL; 485 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 486 error = 0; 487 break; 488 489 case SIOCSIFFLAGS: 490 if ((error = ifioctl_common(ifp, command, data)) != 0) 491 break; 492 /* XXX re-use ether_ioctl() */ 493 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 494 case IFF_UP: 495 cdce_init(sc); 496 break; 497 case IFF_RUNNING: 498 cdce_stop(sc); 499 break; 500 default: 501 break; 502 } 503 break; 504 505 default: 506 error = ether_ioctl(ifp, command, data); 507 break; 508 } 509 510 splx(s); 511 512 if (error == ENETRESET) 513 error = 0; 514 515 return (error); 516 } 517 518 Static void 519 cdce_watchdog(struct ifnet *ifp) 520 { 521 struct cdce_softc *sc = ifp->if_softc; 522 523 if (sc->cdce_dying) 524 return; 525 526 ifp->if_oerrors++; 527 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 528 } 529 530 Static void 531 cdce_init(void *xsc) 532 { 533 struct cdce_softc *sc = xsc; 534 struct ifnet *ifp = GET_IFP(sc); 535 struct cdce_chain *c; 536 usbd_status err; 537 int s, i; 538 539 if (ifp->if_flags & IFF_RUNNING) 540 return; 541 542 s = splnet(); 543 544 if (cdce_tx_list_init(sc) == ENOBUFS) { 545 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 546 splx(s); 547 return; 548 } 549 550 if (cdce_rx_list_init(sc) == ENOBUFS) { 551 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 552 splx(s); 553 return; 554 } 555 556 /* Maybe set multicast / broadcast here??? */ 557 558 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 559 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 560 if (err) { 561 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 562 usbd_errstr(err)); 563 splx(s); 564 return; 565 } 566 567 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 568 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 569 if (err) { 570 printf("%s: open tx pipe failed: %s\n", 571 device_xname(sc->cdce_dev), usbd_errstr(err)); 572 splx(s); 573 return; 574 } 575 576 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 577 c = &sc->cdce_cdata.cdce_rx_chain[i]; 578 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, 579 c->cdce_buf, CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, 580 USBD_NO_TIMEOUT, cdce_rxeof); 581 usbd_transfer(c->cdce_xfer); 582 } 583 584 ifp->if_flags |= IFF_RUNNING; 585 ifp->if_flags &= ~IFF_OACTIVE; 586 587 splx(s); 588 } 589 590 Static int 591 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 592 { 593 struct mbuf *m_new = NULL; 594 595 if (m == NULL) { 596 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 597 if (m_new == NULL) { 598 printf("%s: no memory for rx list " 599 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 600 return (ENOBUFS); 601 } 602 MCLGET(m_new, M_DONTWAIT); 603 if (!(m_new->m_flags & M_EXT)) { 604 printf("%s: no memory for rx list " 605 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 606 m_freem(m_new); 607 return (ENOBUFS); 608 } 609 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 610 } else { 611 m_new = m; 612 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 613 m_new->m_data = m_new->m_ext.ext_buf; 614 } 615 c->cdce_mbuf = m_new; 616 return (0); 617 } 618 619 Static int 620 cdce_rx_list_init(struct cdce_softc *sc) 621 { 622 struct cdce_cdata *cd; 623 struct cdce_chain *c; 624 int i; 625 626 cd = &sc->cdce_cdata; 627 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 628 c = &cd->cdce_rx_chain[i]; 629 c->cdce_sc = sc; 630 c->cdce_idx = i; 631 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 632 return (ENOBUFS); 633 if (c->cdce_xfer == NULL) { 634 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 635 if (c->cdce_xfer == NULL) 636 return (ENOBUFS); 637 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, 638 CDCE_BUFSZ); 639 if (c->cdce_buf == NULL) 640 return (ENOBUFS); 641 } 642 } 643 644 return (0); 645 } 646 647 Static int 648 cdce_tx_list_init(struct cdce_softc *sc) 649 { 650 struct cdce_cdata *cd; 651 struct cdce_chain *c; 652 int i; 653 654 cd = &sc->cdce_cdata; 655 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 656 c = &cd->cdce_tx_chain[i]; 657 c->cdce_sc = sc; 658 c->cdce_idx = i; 659 c->cdce_mbuf = NULL; 660 if (c->cdce_xfer == NULL) { 661 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 662 if (c->cdce_xfer == NULL) 663 return (ENOBUFS); 664 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 665 if (c->cdce_buf == NULL) 666 return (ENOBUFS); 667 } 668 } 669 670 return (0); 671 } 672 673 Static void 674 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 675 { 676 struct cdce_chain *c = priv; 677 struct cdce_softc *sc = c->cdce_sc; 678 struct ifnet *ifp = GET_IFP(sc); 679 struct mbuf *m; 680 int total_len = 0; 681 int s; 682 683 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 684 return; 685 686 if (status != USBD_NORMAL_COMPLETION) { 687 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 688 return; 689 if (sc->cdce_rxeof_errors == 0) 690 printf("%s: usb error on rx: %s\n", 691 device_xname(sc->cdce_dev), usbd_errstr(status)); 692 if (status == USBD_STALLED) 693 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 694 DELAY(sc->cdce_rxeof_errors * 10000); 695 sc->cdce_rxeof_errors++; 696 goto done; 697 } 698 699 sc->cdce_rxeof_errors = 0; 700 701 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 702 if (sc->cdce_flags & CDCE_ZAURUS) 703 total_len -= 4; /* Strip off CRC added by Zaurus */ 704 if (total_len <= 1) 705 goto done; 706 707 m = c->cdce_mbuf; 708 memcpy(mtod(m, char *), c->cdce_buf, total_len); 709 710 if (total_len < sizeof(struct ether_header)) { 711 ifp->if_ierrors++; 712 goto done; 713 } 714 715 ifp->if_ipackets++; 716 m->m_pkthdr.len = m->m_len = total_len; 717 m->m_pkthdr.rcvif = ifp; 718 719 s = splnet(); 720 721 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 722 ifp->if_ierrors++; 723 goto done1; 724 } 725 726 bpf_mtap(ifp, m); 727 728 (*(ifp)->if_input)((ifp), (m)); 729 730 done1: 731 splx(s); 732 733 done: 734 /* Setup new transfer. */ 735 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, c->cdce_buf, 736 CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, 737 cdce_rxeof); 738 usbd_transfer(c->cdce_xfer); 739 } 740 741 Static void 742 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, 743 usbd_status status) 744 { 745 struct cdce_chain *c = priv; 746 struct cdce_softc *sc = c->cdce_sc; 747 struct ifnet *ifp = GET_IFP(sc); 748 usbd_status err; 749 int s; 750 751 if (sc->cdce_dying) 752 return; 753 754 s = splnet(); 755 756 ifp->if_timer = 0; 757 ifp->if_flags &= ~IFF_OACTIVE; 758 759 if (status != USBD_NORMAL_COMPLETION) { 760 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 761 splx(s); 762 return; 763 } 764 ifp->if_oerrors++; 765 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 766 usbd_errstr(status)); 767 if (status == USBD_STALLED) 768 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 769 splx(s); 770 return; 771 } 772 773 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 774 775 if (c->cdce_mbuf != NULL) { 776 m_freem(c->cdce_mbuf); 777 c->cdce_mbuf = NULL; 778 } 779 780 if (err) 781 ifp->if_oerrors++; 782 else 783 ifp->if_opackets++; 784 785 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 786 cdce_start(ifp); 787 788 splx(s); 789 } 790 791 int 792 cdce_activate(device_t self, enum devact act) 793 { 794 struct cdce_softc *sc = device_private(self); 795 796 switch (act) { 797 case DVACT_DEACTIVATE: 798 if_deactivate(GET_IFP(sc)); 799 sc->cdce_dying = 1; 800 return 0; 801 default: 802 return EOPNOTSUPP; 803 } 804 } 805
Indexes created Tue Sep 30 20:09:53 GMT 2025