if_cdce.c revision 1.46
1 /* $NetBSD: if_cdce.c,v 1.46 2018/06/26 06:48:02 msaitoh 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 1.46 2018/06/26 06:48:02 msaitoh 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(struct usbd_xfer *, void *, usbd_status); 87 Static void cdce_txeof(struct usbd_xfer *, void *, 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 *uiaa = aux; 122 123 if (cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL) 124 return UMATCH_VENDOR_PRODUCT; 125 126 if (uiaa->uiaa_class == UICLASS_CDC && uiaa->uiaa_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 *uiaa = aux; 138 char *devinfop; 139 int s; 140 struct ifnet *ifp; 141 struct usbd_device *dev = uiaa->uiaa_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 = uiaa->uiaa_device; 163 sc->cdce_ctl_iface = uiaa->uiaa_iface; 164 165 t = cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_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 < uiaa->uiaa_nifaces; i++) { 181 if (uiaa->uiaa_ifaces[i] != NULL) { 182 id = usbd_get_interface_descriptor( 183 uiaa->uiaa_ifaces[i]); 184 if (id != NULL && id->bInterfaceNumber == 185 data_ifcno) { 186 sc->cdce_data_iface = uiaa->uiaa_ifaces[i]; 187 uiaa->uiaa_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 strlcpy(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, BPF_D_OUT); 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, c, c->cdce_buf, m->m_pkthdr.len + extra, 380 USBD_FORCE_SHORT_XFER, 10000, cdce_txeof); 381 err = usbd_transfer(c->cdce_xfer); 382 if (err != USBD_IN_PROGRESS) { 383 cdce_stop(sc); 384 return EIO; 385 } 386 387 sc->cdce_cdata.cdce_tx_cnt++; 388 389 return 0; 390 } 391 392 Static void 393 cdce_stop(struct cdce_softc *sc) 394 { 395 usbd_status err; 396 struct ifnet *ifp = GET_IFP(sc); 397 int i; 398 399 ifp->if_timer = 0; 400 401 if (sc->cdce_bulkin_pipe != NULL) { 402 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 403 if (err) 404 printf("%s: abort rx pipe failed: %s\n", 405 device_xname(sc->cdce_dev), usbd_errstr(err)); 406 } 407 408 if (sc->cdce_bulkout_pipe != NULL) { 409 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 410 if (err) 411 printf("%s: abort tx pipe failed: %s\n", 412 device_xname(sc->cdce_dev), usbd_errstr(err)); 413 } 414 415 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 416 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 417 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 418 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 419 } 420 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 421 usbd_destroy_xfer 422 (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 423 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 424 } 425 } 426 427 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 428 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 429 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 430 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 431 } 432 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 433 usbd_destroy_xfer( 434 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 435 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 436 } 437 } 438 439 if (sc->cdce_bulkin_pipe != NULL) { 440 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 441 if (err) 442 printf("%s: close rx pipe failed: %s\n", 443 device_xname(sc->cdce_dev), usbd_errstr(err)); 444 sc->cdce_bulkin_pipe = NULL; 445 } 446 447 if (sc->cdce_bulkout_pipe != NULL) { 448 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 449 if (err) 450 printf("%s: close tx pipe failed: %s\n", 451 device_xname(sc->cdce_dev), usbd_errstr(err)); 452 sc->cdce_bulkout_pipe = NULL; 453 } 454 455 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 456 } 457 458 Static int 459 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 460 { 461 struct cdce_softc *sc = ifp->if_softc; 462 struct ifaddr *ifa = (struct ifaddr *)data; 463 struct ifreq *ifr = (struct ifreq *)data; 464 int s, error = 0; 465 466 if (sc->cdce_dying) 467 return EIO; 468 469 s = splnet(); 470 471 switch(command) { 472 case SIOCINITIFADDR: 473 ifp->if_flags |= IFF_UP; 474 cdce_init(sc); 475 switch (ifa->ifa_addr->sa_family) { 476 #ifdef INET 477 case AF_INET: 478 arp_ifinit(ifp, ifa); 479 break; 480 #endif /* INET */ 481 } 482 break; 483 484 case SIOCSIFMTU: 485 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 486 error = EINVAL; 487 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 488 error = 0; 489 break; 490 491 case SIOCSIFFLAGS: 492 if ((error = ifioctl_common(ifp, command, data)) != 0) 493 break; 494 /* XXX re-use ether_ioctl() */ 495 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 496 case IFF_UP: 497 cdce_init(sc); 498 break; 499 case IFF_RUNNING: 500 cdce_stop(sc); 501 break; 502 default: 503 break; 504 } 505 break; 506 507 default: 508 error = ether_ioctl(ifp, command, data); 509 break; 510 } 511 512 splx(s); 513 514 if (error == ENETRESET) 515 error = 0; 516 517 return error; 518 } 519 520 Static void 521 cdce_watchdog(struct ifnet *ifp) 522 { 523 struct cdce_softc *sc = ifp->if_softc; 524 525 if (sc->cdce_dying) 526 return; 527 528 ifp->if_oerrors++; 529 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 530 } 531 532 Static void 533 cdce_init(void *xsc) 534 { 535 struct cdce_softc *sc = xsc; 536 struct ifnet *ifp = GET_IFP(sc); 537 struct cdce_chain *c; 538 usbd_status err; 539 int s, i; 540 541 if (ifp->if_flags & IFF_RUNNING) 542 return; 543 544 s = splnet(); 545 546 /* Maybe set multicast / broadcast here??? */ 547 548 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 549 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 550 if (err) { 551 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 552 usbd_errstr(err)); 553 splx(s); 554 return; 555 } 556 557 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 558 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 559 if (err) { 560 printf("%s: open tx pipe failed: %s\n", 561 device_xname(sc->cdce_dev), usbd_errstr(err)); 562 splx(s); 563 return; 564 } 565 566 if (cdce_tx_list_init(sc)) { 567 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 568 splx(s); 569 return; 570 } 571 572 if (cdce_rx_list_init(sc)) { 573 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 574 splx(s); 575 return; 576 } 577 578 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 579 c = &sc->cdce_cdata.cdce_rx_chain[i]; 580 581 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 582 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 583 usbd_transfer(c->cdce_xfer); 584 } 585 586 ifp->if_flags |= IFF_RUNNING; 587 ifp->if_flags &= ~IFF_OACTIVE; 588 589 splx(s); 590 } 591 592 Static int 593 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 594 { 595 struct mbuf *m_new = NULL; 596 597 if (m == NULL) { 598 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 599 if (m_new == NULL) { 600 printf("%s: no memory for rx list " 601 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 602 return ENOBUFS; 603 } 604 MCLGET(m_new, M_DONTWAIT); 605 if (!(m_new->m_flags & M_EXT)) { 606 printf("%s: no memory for rx list " 607 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 608 m_freem(m_new); 609 return ENOBUFS; 610 } 611 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 612 } else { 613 m_new = m; 614 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 615 m_new->m_data = m_new->m_ext.ext_buf; 616 } 617 c->cdce_mbuf = m_new; 618 return 0; 619 } 620 621 Static int 622 cdce_rx_list_init(struct cdce_softc *sc) 623 { 624 struct cdce_cdata *cd; 625 struct cdce_chain *c; 626 int i; 627 628 cd = &sc->cdce_cdata; 629 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 630 c = &cd->cdce_rx_chain[i]; 631 c->cdce_sc = sc; 632 c->cdce_idx = i; 633 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 634 return ENOBUFS; 635 if (c->cdce_xfer == NULL) { 636 int err = usbd_create_xfer(sc->cdce_bulkin_pipe, 637 CDCE_BUFSZ, 0, 0, &c->cdce_xfer); 638 if (err) 639 return err; 640 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 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 int err = usbd_create_xfer(sc->cdce_bulkout_pipe, 662 CDCE_BUFSZ, USBD_FORCE_SHORT_XFER, 0, 663 &c->cdce_xfer); 664 if (err) 665 return err; 666 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 667 } 668 } 669 670 return 0; 671 } 672 673 Static void 674 cdce_rxeof(struct usbd_xfer *xfer, void *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 m->m_pkthdr.len = m->m_len = total_len; 716 m_set_rcvif(m, ifp); 717 718 s = splnet(); 719 720 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 721 ifp->if_ierrors++; 722 goto done1; 723 } 724 725 if_percpuq_enqueue((ifp)->if_percpuq, (m)); 726 727 done1: 728 splx(s); 729 730 done: 731 /* Setup new transfer. */ 732 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 733 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 734 usbd_transfer(c->cdce_xfer); 735 } 736 737 Static void 738 cdce_txeof(struct usbd_xfer *xfer, void *priv, 739 usbd_status status) 740 { 741 struct cdce_chain *c = priv; 742 struct cdce_softc *sc = c->cdce_sc; 743 struct ifnet *ifp = GET_IFP(sc); 744 usbd_status err; 745 int s; 746 747 if (sc->cdce_dying) 748 return; 749 750 s = splnet(); 751 752 ifp->if_timer = 0; 753 ifp->if_flags &= ~IFF_OACTIVE; 754 755 if (status != USBD_NORMAL_COMPLETION) { 756 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 757 splx(s); 758 return; 759 } 760 ifp->if_oerrors++; 761 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 762 usbd_errstr(status)); 763 if (status == USBD_STALLED) 764 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 765 splx(s); 766 return; 767 } 768 769 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 770 771 if (c->cdce_mbuf != NULL) { 772 m_freem(c->cdce_mbuf); 773 c->cdce_mbuf = NULL; 774 } 775 776 if (err) 777 ifp->if_oerrors++; 778 else 779 ifp->if_opackets++; 780 781 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 782 cdce_start(ifp); 783 784 splx(s); 785 } 786 787 int 788 cdce_activate(device_t self, enum devact act) 789 { 790 struct cdce_softc *sc = device_private(self); 791 792 switch (act) { 793 case DVACT_DEACTIVATE: 794 if_deactivate(GET_IFP(sc)); 795 sc->cdce_dying = 1; 796 return 0; 797 default: 798 return EOPNOTSUPP; 799 } 800 } 801
Indexes created Fri Sep 26 08:10:20 GMT 2025