if_cdce.c revision 1.38.18.1
1 /* $NetBSD: if_cdce.c,v 1.38.18.1 2016/09/06 20:33:08 skrll 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 1.38.18.1 2016/09/06 20:33:08 skrll 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 <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(struct usbd_xfer *, void *, usbd_status); 89 Static void cdce_txeof(struct usbd_xfer *, void *, 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 *uiaa = aux; 124 125 if (cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL) 126 return UMATCH_VENDOR_PRODUCT; 127 128 if (uiaa->uiaa_class == UICLASS_CDC && uiaa->uiaa_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 *uiaa = aux; 140 char *devinfop; 141 int s; 142 struct ifnet *ifp; 143 struct usbd_device *dev = uiaa->uiaa_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 = uiaa->uiaa_device; 165 sc->cdce_ctl_iface = uiaa->uiaa_iface; 166 167 t = cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_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 < uiaa->uiaa_nifaces; i++) { 183 if (uiaa->uiaa_ifaces[i] != NULL) { 184 id = usbd_get_interface_descriptor( 185 uiaa->uiaa_ifaces[i]); 186 if (id != NULL && id->bInterfaceNumber == 187 data_ifcno) { 188 sc->cdce_data_iface = uiaa->uiaa_ifaces[i]; 189 uiaa->uiaa_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 pmf_device_deregister(self); 313 314 s = splusb(); 315 316 if (!sc->cdce_attached) { 317 splx(s); 318 return 0; 319 } 320 321 if (ifp->if_flags & IFF_RUNNING) 322 cdce_stop(sc); 323 324 ether_ifdetach(ifp); 325 326 if_detach(ifp); 327 328 sc->cdce_attached = 0; 329 splx(s); 330 331 return 0; 332 } 333 334 Static void 335 cdce_start(struct ifnet *ifp) 336 { 337 struct cdce_softc *sc = ifp->if_softc; 338 struct mbuf *m_head = NULL; 339 340 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 341 return; 342 343 IFQ_POLL(&ifp->if_snd, m_head); 344 if (m_head == NULL) 345 return; 346 347 if (cdce_encap(sc, m_head, 0)) { 348 ifp->if_flags |= IFF_OACTIVE; 349 return; 350 } 351 352 IFQ_DEQUEUE(&ifp->if_snd, m_head); 353 354 bpf_mtap(ifp, m_head); 355 356 ifp->if_flags |= IFF_OACTIVE; 357 358 ifp->if_timer = 6; 359 } 360 361 Static int 362 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 363 { 364 struct cdce_chain *c; 365 usbd_status err; 366 int extra = 0; 367 368 c = &sc->cdce_cdata.cdce_tx_chain[idx]; 369 370 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 371 if (sc->cdce_flags & CDCE_ZAURUS) { 372 /* Zaurus wants a 32-bit CRC appended to every frame */ 373 uint32_t crc; 374 375 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 376 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 377 extra = sizeof(crc); 378 } 379 c->cdce_mbuf = m; 380 381 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, m->m_pkthdr.len + extra, 382 USBD_FORCE_SHORT_XFER, 10000, cdce_txeof); 383 err = usbd_transfer(c->cdce_xfer); 384 if (err != USBD_IN_PROGRESS) { 385 cdce_stop(sc); 386 return EIO; 387 } 388 389 sc->cdce_cdata.cdce_tx_cnt++; 390 391 return 0; 392 } 393 394 Static void 395 cdce_stop(struct cdce_softc *sc) 396 { 397 usbd_status err; 398 struct ifnet *ifp = GET_IFP(sc); 399 int i; 400 401 ifp->if_timer = 0; 402 403 if (sc->cdce_bulkin_pipe != NULL) { 404 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 405 if (err) 406 printf("%s: abort rx pipe failed: %s\n", 407 device_xname(sc->cdce_dev), usbd_errstr(err)); 408 } 409 410 if (sc->cdce_bulkout_pipe != NULL) { 411 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 412 if (err) 413 printf("%s: abort tx pipe failed: %s\n", 414 device_xname(sc->cdce_dev), usbd_errstr(err)); 415 } 416 417 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 418 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 419 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 420 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 421 } 422 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 423 usbd_destroy_xfer 424 (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 425 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 426 } 427 } 428 429 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 430 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 431 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 432 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 433 } 434 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 435 usbd_destroy_xfer( 436 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 437 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 438 } 439 } 440 441 if (sc->cdce_bulkin_pipe != NULL) { 442 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 443 if (err) 444 printf("%s: close rx pipe failed: %s\n", 445 device_xname(sc->cdce_dev), usbd_errstr(err)); 446 sc->cdce_bulkin_pipe = NULL; 447 } 448 449 if (sc->cdce_bulkout_pipe != NULL) { 450 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 451 if (err) 452 printf("%s: close tx pipe failed: %s\n", 453 device_xname(sc->cdce_dev), usbd_errstr(err)); 454 sc->cdce_bulkout_pipe = NULL; 455 } 456 457 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 458 } 459 460 Static int 461 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 462 { 463 struct cdce_softc *sc = ifp->if_softc; 464 struct ifaddr *ifa = (struct ifaddr *)data; 465 struct ifreq *ifr = (struct ifreq *)data; 466 int s, error = 0; 467 468 if (sc->cdce_dying) 469 return EIO; 470 471 s = splnet(); 472 473 switch(command) { 474 case SIOCINITIFADDR: 475 ifp->if_flags |= IFF_UP; 476 cdce_init(sc); 477 switch (ifa->ifa_addr->sa_family) { 478 #ifdef INET 479 case AF_INET: 480 arp_ifinit(ifp, ifa); 481 break; 482 #endif /* INET */ 483 } 484 break; 485 486 case SIOCSIFMTU: 487 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 488 error = EINVAL; 489 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 490 error = 0; 491 break; 492 493 case SIOCSIFFLAGS: 494 if ((error = ifioctl_common(ifp, command, data)) != 0) 495 break; 496 /* XXX re-use ether_ioctl() */ 497 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 498 case IFF_UP: 499 cdce_init(sc); 500 break; 501 case IFF_RUNNING: 502 cdce_stop(sc); 503 break; 504 default: 505 break; 506 } 507 break; 508 509 default: 510 error = ether_ioctl(ifp, command, data); 511 break; 512 } 513 514 splx(s); 515 516 if (error == ENETRESET) 517 error = 0; 518 519 return error; 520 } 521 522 Static void 523 cdce_watchdog(struct ifnet *ifp) 524 { 525 struct cdce_softc *sc = ifp->if_softc; 526 527 if (sc->cdce_dying) 528 return; 529 530 ifp->if_oerrors++; 531 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 532 } 533 534 Static void 535 cdce_init(void *xsc) 536 { 537 struct cdce_softc *sc = xsc; 538 struct ifnet *ifp = GET_IFP(sc); 539 struct cdce_chain *c; 540 usbd_status err; 541 int s, i; 542 543 if (ifp->if_flags & IFF_RUNNING) 544 return; 545 546 s = splnet(); 547 548 /* Maybe set multicast / broadcast here??? */ 549 550 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 551 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 552 if (err) { 553 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 554 usbd_errstr(err)); 555 splx(s); 556 return; 557 } 558 559 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 560 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 561 if (err) { 562 printf("%s: open tx pipe failed: %s\n", 563 device_xname(sc->cdce_dev), usbd_errstr(err)); 564 splx(s); 565 return; 566 } 567 568 if (cdce_tx_list_init(sc)) { 569 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 570 splx(s); 571 return; 572 } 573 574 if (cdce_rx_list_init(sc)) { 575 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 576 splx(s); 577 return; 578 } 579 580 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 581 c = &sc->cdce_cdata.cdce_rx_chain[i]; 582 583 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 584 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 585 usbd_transfer(c->cdce_xfer); 586 } 587 588 ifp->if_flags |= IFF_RUNNING; 589 ifp->if_flags &= ~IFF_OACTIVE; 590 591 splx(s); 592 } 593 594 Static int 595 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 596 { 597 struct mbuf *m_new = NULL; 598 599 if (m == NULL) { 600 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 601 if (m_new == NULL) { 602 printf("%s: no memory for rx list " 603 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 604 return ENOBUFS; 605 } 606 MCLGET(m_new, M_DONTWAIT); 607 if (!(m_new->m_flags & M_EXT)) { 608 printf("%s: no memory for rx list " 609 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 610 m_freem(m_new); 611 return ENOBUFS; 612 } 613 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 614 } else { 615 m_new = m; 616 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 617 m_new->m_data = m_new->m_ext.ext_buf; 618 } 619 c->cdce_mbuf = m_new; 620 return 0; 621 } 622 623 Static int 624 cdce_rx_list_init(struct cdce_softc *sc) 625 { 626 struct cdce_cdata *cd; 627 struct cdce_chain *c; 628 int i; 629 630 cd = &sc->cdce_cdata; 631 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 632 c = &cd->cdce_rx_chain[i]; 633 c->cdce_sc = sc; 634 c->cdce_idx = i; 635 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 636 return ENOBUFS; 637 if (c->cdce_xfer == NULL) { 638 int err = usbd_create_xfer(sc->cdce_bulkin_pipe, 639 CDCE_BUFSZ, USBD_SHORT_XFER_OK, 0, &c->cdce_xfer); 640 if (err) 641 return err; 642 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 643 } 644 } 645 646 return 0; 647 } 648 649 Static int 650 cdce_tx_list_init(struct cdce_softc *sc) 651 { 652 struct cdce_cdata *cd; 653 struct cdce_chain *c; 654 int i; 655 656 cd = &sc->cdce_cdata; 657 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 658 c = &cd->cdce_tx_chain[i]; 659 c->cdce_sc = sc; 660 c->cdce_idx = i; 661 c->cdce_mbuf = NULL; 662 if (c->cdce_xfer == NULL) { 663 int err = usbd_create_xfer(sc->cdce_bulkout_pipe, 664 CDCE_BUFSZ, USBD_FORCE_SHORT_XFER, 0, 665 &c->cdce_xfer); 666 if (err) 667 return err; 668 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 669 } 670 } 671 672 return 0; 673 } 674 675 Static void 676 cdce_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 677 { 678 struct cdce_chain *c = priv; 679 struct cdce_softc *sc = c->cdce_sc; 680 struct ifnet *ifp = GET_IFP(sc); 681 struct mbuf *m; 682 int total_len = 0; 683 int s; 684 685 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 686 return; 687 688 if (status != USBD_NORMAL_COMPLETION) { 689 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 690 return; 691 if (sc->cdce_rxeof_errors == 0) 692 printf("%s: usb error on rx: %s\n", 693 device_xname(sc->cdce_dev), usbd_errstr(status)); 694 if (status == USBD_STALLED) 695 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 696 DELAY(sc->cdce_rxeof_errors * 10000); 697 sc->cdce_rxeof_errors++; 698 goto done; 699 } 700 701 sc->cdce_rxeof_errors = 0; 702 703 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 704 if (sc->cdce_flags & CDCE_ZAURUS) 705 total_len -= 4; /* Strip off CRC added by Zaurus */ 706 if (total_len <= 1) 707 goto done; 708 709 m = c->cdce_mbuf; 710 memcpy(mtod(m, char *), c->cdce_buf, total_len); 711 712 if (total_len < sizeof(struct ether_header)) { 713 ifp->if_ierrors++; 714 goto done; 715 } 716 717 ifp->if_ipackets++; 718 m->m_pkthdr.len = m->m_len = total_len; 719 m->m_pkthdr.rcvif = ifp; 720 721 s = splnet(); 722 723 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 724 ifp->if_ierrors++; 725 goto done1; 726 } 727 728 bpf_mtap(ifp, m); 729 730 (*(ifp)->if_input)((ifp), (m)); 731 732 done1: 733 splx(s); 734 735 done: 736 /* Setup new transfer. */ 737 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 738 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 739 usbd_transfer(c->cdce_xfer); 740 } 741 742 Static void 743 cdce_txeof(struct usbd_xfer *xfer, void *priv, 744 usbd_status status) 745 { 746 struct cdce_chain *c = priv; 747 struct cdce_softc *sc = c->cdce_sc; 748 struct ifnet *ifp = GET_IFP(sc); 749 usbd_status err; 750 int s; 751 752 if (sc->cdce_dying) 753 return; 754 755 s = splnet(); 756 757 ifp->if_timer = 0; 758 ifp->if_flags &= ~IFF_OACTIVE; 759 760 if (status != USBD_NORMAL_COMPLETION) { 761 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 762 splx(s); 763 return; 764 } 765 ifp->if_oerrors++; 766 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 767 usbd_errstr(status)); 768 if (status == USBD_STALLED) 769 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 770 splx(s); 771 return; 772 } 773 774 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 775 776 if (c->cdce_mbuf != NULL) { 777 m_freem(c->cdce_mbuf); 778 c->cdce_mbuf = NULL; 779 } 780 781 if (err) 782 ifp->if_oerrors++; 783 else 784 ifp->if_opackets++; 785 786 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 787 cdce_start(ifp); 788 789 splx(s); 790 } 791 792 int 793 cdce_activate(device_t self, enum devact act) 794 { 795 struct cdce_softc *sc = device_private(self); 796 797 switch (act) { 798 case DVACT_DEACTIVATE: 799 if_deactivate(GET_IFP(sc)); 800 sc->cdce_dying = 1; 801 return 0; 802 default: 803 return EOPNOTSUPP; 804 } 805 } 806
Indexes created Tue Sep 30 20:09:53 GMT 2025