if_cdce.c revision 1.39
1 /* $NetBSD: if_cdce.c,v 1.39 2015/04/13 16:33:25 riastradh 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 1.39 2015/04/13 16:33:25 riastradh Exp $"); 45 46 #ifdef _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 <net/if.h> 59 #include <net/if_arp.h> 60 #include <net/if_dl.h> 61 #include <net/if_media.h> 62 63 #include <net/bpf.h> 64 65 #include <net/if_ether.h> 66 #ifdef INET 67 #include <netinet/in.h> 68 #include <netinet/if_inarp.h> 69 #endif 70 71 72 73 #include <dev/usb/usb.h> 74 #include <dev/usb/usbdi.h> 75 #include <dev/usb/usbdi_util.h> 76 #include <dev/usb/usbdevs.h> 77 #include <dev/usb/usbcdc.h> 78 79 #include <dev/usb/if_cdcereg.h> 80 81 Static int cdce_tx_list_init(struct cdce_softc *); 82 Static int cdce_rx_list_init(struct cdce_softc *); 83 Static int cdce_newbuf(struct cdce_softc *, struct cdce_chain *, 84 struct mbuf *); 85 Static int cdce_encap(struct cdce_softc *, struct mbuf *, int); 86 Static void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 87 Static void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status); 88 Static void cdce_start(struct ifnet *); 89 Static int cdce_ioctl(struct ifnet *, u_long, void *); 90 Static void cdce_init(void *); 91 Static void cdce_watchdog(struct ifnet *); 92 Static void cdce_stop(struct cdce_softc *); 93 94 Static const struct cdce_type cdce_devs[] = { 95 {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION }, 96 {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION }, 97 {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION }, 98 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION }, 99 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION }, 100 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, 101 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, 102 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, 103 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, 104 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, 105 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, 106 }; 107 #define cdce_lookup(v, p) \ 108 ((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 pmf_device_deregister(self); 311 312 s = splusb(); 313 314 if (!sc->cdce_attached) { 315 splx(s); 316 return (0); 317 } 318 319 if (ifp->if_flags & IFF_RUNNING) 320 cdce_stop(sc); 321 322 ether_ifdetach(ifp); 323 324 if_detach(ifp); 325 326 sc->cdce_attached = 0; 327 splx(s); 328 329 return (0); 330 } 331 332 Static void 333 cdce_start(struct ifnet *ifp) 334 { 335 struct cdce_softc *sc = ifp->if_softc; 336 struct mbuf *m_head = NULL; 337 338 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 339 return; 340 341 IFQ_POLL(&ifp->if_snd, m_head); 342 if (m_head == NULL) 343 return; 344 345 if (cdce_encap(sc, m_head, 0)) { 346 ifp->if_flags |= IFF_OACTIVE; 347 return; 348 } 349 350 IFQ_DEQUEUE(&ifp->if_snd, m_head); 351 352 bpf_mtap(ifp, m_head); 353 354 ifp->if_flags |= IFF_OACTIVE; 355 356 ifp->if_timer = 6; 357 } 358 359 Static int 360 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 361 { 362 struct cdce_chain *c; 363 usbd_status err; 364 int extra = 0; 365 366 c = &sc->cdce_cdata.cdce_tx_chain[idx]; 367 368 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 369 if (sc->cdce_flags & CDCE_ZAURUS) { 370 /* Zaurus wants a 32-bit CRC appended to every frame */ 371 uint32_t crc; 372 373 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 374 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 375 extra = sizeof(crc); 376 } 377 c->cdce_mbuf = m; 378 379 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkout_pipe, c, c->cdce_buf, 380 m->m_pkthdr.len + extra, USBD_FORCE_SHORT_XFER | USBD_NO_COPY, 381 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 433 (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 434 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 435 } 436 } 437 438 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 439 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 440 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 441 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 442 } 443 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 444 usbd_free_xfer( 445 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 446 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 447 } 448 } 449 450 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 451 } 452 453 Static int 454 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 455 { 456 struct cdce_softc *sc = ifp->if_softc; 457 struct ifaddr *ifa = (struct ifaddr *)data; 458 struct ifreq *ifr = (struct ifreq *)data; 459 int s, error = 0; 460 461 if (sc->cdce_dying) 462 return (EIO); 463 464 s = splnet(); 465 466 switch(command) { 467 case SIOCINITIFADDR: 468 ifp->if_flags |= IFF_UP; 469 cdce_init(sc); 470 switch (ifa->ifa_addr->sa_family) { 471 #ifdef INET 472 case AF_INET: 473 arp_ifinit(ifp, ifa); 474 break; 475 #endif /* INET */ 476 } 477 break; 478 479 case SIOCSIFMTU: 480 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 481 error = EINVAL; 482 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 483 error = 0; 484 break; 485 486 case SIOCSIFFLAGS: 487 if ((error = ifioctl_common(ifp, command, data)) != 0) 488 break; 489 /* XXX re-use ether_ioctl() */ 490 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 491 case IFF_UP: 492 cdce_init(sc); 493 break; 494 case IFF_RUNNING: 495 cdce_stop(sc); 496 break; 497 default: 498 break; 499 } 500 break; 501 502 default: 503 error = ether_ioctl(ifp, command, data); 504 break; 505 } 506 507 splx(s); 508 509 if (error == ENETRESET) 510 error = 0; 511 512 return (error); 513 } 514 515 Static void 516 cdce_watchdog(struct ifnet *ifp) 517 { 518 struct cdce_softc *sc = ifp->if_softc; 519 520 if (sc->cdce_dying) 521 return; 522 523 ifp->if_oerrors++; 524 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 525 } 526 527 Static void 528 cdce_init(void *xsc) 529 { 530 struct cdce_softc *sc = xsc; 531 struct ifnet *ifp = GET_IFP(sc); 532 struct cdce_chain *c; 533 usbd_status err; 534 int s, i; 535 536 if (ifp->if_flags & IFF_RUNNING) 537 return; 538 539 s = splnet(); 540 541 if (cdce_tx_list_init(sc) == ENOBUFS) { 542 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 543 splx(s); 544 return; 545 } 546 547 if (cdce_rx_list_init(sc) == ENOBUFS) { 548 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 549 splx(s); 550 return; 551 } 552 553 /* Maybe set multicast / broadcast here??? */ 554 555 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 556 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 557 if (err) { 558 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 559 usbd_errstr(err)); 560 splx(s); 561 return; 562 } 563 564 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 565 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 566 if (err) { 567 printf("%s: open tx pipe failed: %s\n", 568 device_xname(sc->cdce_dev), usbd_errstr(err)); 569 splx(s); 570 return; 571 } 572 573 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 574 c = &sc->cdce_cdata.cdce_rx_chain[i]; 575 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, 576 c->cdce_buf, CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, 577 USBD_NO_TIMEOUT, cdce_rxeof); 578 usbd_transfer(c->cdce_xfer); 579 } 580 581 ifp->if_flags |= IFF_RUNNING; 582 ifp->if_flags &= ~IFF_OACTIVE; 583 584 splx(s); 585 } 586 587 Static int 588 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 589 { 590 struct mbuf *m_new = NULL; 591 592 if (m == NULL) { 593 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 594 if (m_new == NULL) { 595 printf("%s: no memory for rx list " 596 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 597 return (ENOBUFS); 598 } 599 MCLGET(m_new, M_DONTWAIT); 600 if (!(m_new->m_flags & M_EXT)) { 601 printf("%s: no memory for rx list " 602 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 603 m_freem(m_new); 604 return (ENOBUFS); 605 } 606 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 607 } else { 608 m_new = m; 609 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 610 m_new->m_data = m_new->m_ext.ext_buf; 611 } 612 c->cdce_mbuf = m_new; 613 return (0); 614 } 615 616 Static int 617 cdce_rx_list_init(struct cdce_softc *sc) 618 { 619 struct cdce_cdata *cd; 620 struct cdce_chain *c; 621 int i; 622 623 cd = &sc->cdce_cdata; 624 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 625 c = &cd->cdce_rx_chain[i]; 626 c->cdce_sc = sc; 627 c->cdce_idx = i; 628 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 629 return (ENOBUFS); 630 if (c->cdce_xfer == NULL) { 631 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 632 if (c->cdce_xfer == NULL) 633 return (ENOBUFS); 634 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, 635 CDCE_BUFSZ); 636 if (c->cdce_buf == NULL) 637 return (ENOBUFS); 638 } 639 } 640 641 return (0); 642 } 643 644 Static int 645 cdce_tx_list_init(struct cdce_softc *sc) 646 { 647 struct cdce_cdata *cd; 648 struct cdce_chain *c; 649 int i; 650 651 cd = &sc->cdce_cdata; 652 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 653 c = &cd->cdce_tx_chain[i]; 654 c->cdce_sc = sc; 655 c->cdce_idx = i; 656 c->cdce_mbuf = NULL; 657 if (c->cdce_xfer == NULL) { 658 c->cdce_xfer = usbd_alloc_xfer(sc->cdce_udev); 659 if (c->cdce_xfer == NULL) 660 return (ENOBUFS); 661 c->cdce_buf = usbd_alloc_buffer(c->cdce_xfer, CDCE_BUFSZ); 662 if (c->cdce_buf == NULL) 663 return (ENOBUFS); 664 } 665 } 666 667 return (0); 668 } 669 670 Static void 671 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status) 672 { 673 struct cdce_chain *c = priv; 674 struct cdce_softc *sc = c->cdce_sc; 675 struct ifnet *ifp = GET_IFP(sc); 676 struct mbuf *m; 677 int total_len = 0; 678 int s; 679 680 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 681 return; 682 683 if (status != USBD_NORMAL_COMPLETION) { 684 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 685 return; 686 if (sc->cdce_rxeof_errors == 0) 687 printf("%s: usb error on rx: %s\n", 688 device_xname(sc->cdce_dev), usbd_errstr(status)); 689 if (status == USBD_STALLED) 690 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 691 DELAY(sc->cdce_rxeof_errors * 10000); 692 sc->cdce_rxeof_errors++; 693 goto done; 694 } 695 696 sc->cdce_rxeof_errors = 0; 697 698 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 699 if (sc->cdce_flags & CDCE_ZAURUS) 700 total_len -= 4; /* Strip off CRC added by Zaurus */ 701 if (total_len <= 1) 702 goto done; 703 704 m = c->cdce_mbuf; 705 memcpy(mtod(m, char *), c->cdce_buf, total_len); 706 707 if (total_len < sizeof(struct ether_header)) { 708 ifp->if_ierrors++; 709 goto done; 710 } 711 712 ifp->if_ipackets++; 713 m->m_pkthdr.len = m->m_len = total_len; 714 m->m_pkthdr.rcvif = ifp; 715 716 s = splnet(); 717 718 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 719 ifp->if_ierrors++; 720 goto done1; 721 } 722 723 bpf_mtap(ifp, m); 724 725 (*(ifp)->if_input)((ifp), (m)); 726 727 done1: 728 splx(s); 729 730 done: 731 /* Setup new transfer. */ 732 usbd_setup_xfer(c->cdce_xfer, sc->cdce_bulkin_pipe, c, c->cdce_buf, 733 CDCE_BUFSZ, USBD_SHORT_XFER_OK | USBD_NO_COPY, USBD_NO_TIMEOUT, 734 cdce_rxeof); 735 usbd_transfer(c->cdce_xfer); 736 } 737 738 Static void 739 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, 740 usbd_status status) 741 { 742 struct cdce_chain *c = priv; 743 struct cdce_softc *sc = c->cdce_sc; 744 struct ifnet *ifp = GET_IFP(sc); 745 usbd_status err; 746 int s; 747 748 if (sc->cdce_dying) 749 return; 750 751 s = splnet(); 752 753 ifp->if_timer = 0; 754 ifp->if_flags &= ~IFF_OACTIVE; 755 756 if (status != USBD_NORMAL_COMPLETION) { 757 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 758 splx(s); 759 return; 760 } 761 ifp->if_oerrors++; 762 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 763 usbd_errstr(status)); 764 if (status == USBD_STALLED) 765 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 766 splx(s); 767 return; 768 } 769 770 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 771 772 if (c->cdce_mbuf != NULL) { 773 m_freem(c->cdce_mbuf); 774 c->cdce_mbuf = NULL; 775 } 776 777 if (err) 778 ifp->if_oerrors++; 779 else 780 ifp->if_opackets++; 781 782 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 783 cdce_start(ifp); 784 785 splx(s); 786 } 787 788 int 789 cdce_activate(device_t self, enum devact act) 790 { 791 struct cdce_softc *sc = device_private(self); 792 793 switch (act) { 794 case DVACT_DEACTIVATE: 795 if_deactivate(GET_IFP(sc)); 796 sc->cdce_dying = 1; 797 return 0; 798 default: 799 return EOPNOTSUPP; 800 } 801 } 802
Indexes created Tue Sep 30 20:09:53 GMT 2025