if_cdce.c revision 1.38.12.1
1 /* $NetBSD: if_cdce.c,v 1.38.12.1 2017/04/05 19:54:19 snj 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 1.38.12.1 2017/04/05 19:54:19 snj 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 void cdce_tx_list_free(struct cdce_softc *); 85 Static int cdce_rx_list_init(struct cdce_softc *); 86 Static void cdce_rx_list_free(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(struct usbd_xfer *, void *, usbd_status); 91 Static void cdce_txeof(struct usbd_xfer *, void *, usbd_status); 92 Static void cdce_start(struct ifnet *); 93 Static void cdce_start_locked(struct ifnet *); 94 Static int cdce_ioctl(struct ifnet *, u_long, void *); 95 Static int cdce_init(struct ifnet *); 96 Static int cdce_init_locked(struct ifnet *); 97 Static void cdce_watchdog(struct ifnet *); 98 Static void cdce_stop(struct ifnet *, int); 99 Static void cdce_stop_locked(struct ifnet *, int); 100 101 Static const struct cdce_type cdce_devs[] = { 102 {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION }, 103 {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION }, 104 {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, 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 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, 108 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, 109 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, 110 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, 111 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, 112 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, 113 }; 114 #define cdce_lookup(v, p) \ 115 ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) 116 117 int cdce_match(device_t, cfdata_t, void *); 118 void cdce_attach(device_t, device_t, void *); 119 int cdce_detach(device_t, int); 120 int cdce_activate(device_t, enum devact); 121 extern struct cfdriver cdce_cd; 122 CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, 123 cdce_detach, cdce_activate); 124 125 int 126 cdce_match(device_t parent, cfdata_t match, void *aux) 127 { 128 struct usbif_attach_arg *uiaa = aux; 129 130 if (cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL) 131 return UMATCH_VENDOR_PRODUCT; 132 133 if (uiaa->uiaa_class == UICLASS_CDC && uiaa->uiaa_subclass == 134 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) 135 return UMATCH_IFACECLASS_GENERIC; 136 137 return UMATCH_NONE; 138 } 139 140 void 141 cdce_attach(device_t parent, device_t self, void *aux) 142 { 143 struct cdce_softc *sc = device_private(self); 144 struct usbif_attach_arg *uiaa = aux; 145 char *devinfop; 146 struct ifnet *ifp; 147 struct usbd_device *dev = uiaa->uiaa_device; 148 const struct cdce_type *t; 149 usb_interface_descriptor_t *id; 150 usb_endpoint_descriptor_t *ed; 151 const usb_cdc_union_descriptor_t *ud; 152 usb_config_descriptor_t *cd; 153 int data_ifcno; 154 int i, j, numalts; 155 u_char eaddr[ETHER_ADDR_LEN]; 156 const usb_cdc_ethernet_descriptor_t *ue; 157 char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; 158 159 sc->cdce_dev = self; 160 161 aprint_naive("\n"); 162 aprint_normal("\n"); 163 164 devinfop = usbd_devinfo_alloc(dev, 0); 165 aprint_normal_dev(self, "%s\n", devinfop); 166 usbd_devinfo_free(devinfop); 167 168 mutex_init(&sc->cdce_lock, MUTEX_DEFAULT, IPL_NONE); 169 mutex_init(&sc->cdce_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 170 mutex_init(&sc->cdce_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 171 172 sc->cdce_udev = uiaa->uiaa_device; 173 sc->cdce_ctl_iface = uiaa->uiaa_iface; 174 175 t = cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product); 176 if (t) 177 sc->cdce_flags = t->cdce_flags; 178 179 if (sc->cdce_flags & CDCE_NO_UNION) 180 sc->cdce_data_iface = sc->cdce_ctl_iface; 181 else { 182 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, 183 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); 184 if (ud == NULL) { 185 aprint_error_dev(self, "no union descriptor\n"); 186 return; 187 } 188 data_ifcno = ud->bSlaveInterface[0]; 189 190 for (i = 0; i < uiaa->uiaa_nifaces; i++) { 191 if (uiaa->uiaa_ifaces[i] != NULL) { 192 id = usbd_get_interface_descriptor( 193 uiaa->uiaa_ifaces[i]); 194 if (id != NULL && id->bInterfaceNumber == 195 data_ifcno) { 196 sc->cdce_data_iface = uiaa->uiaa_ifaces[i]; 197 uiaa->uiaa_ifaces[i] = NULL; 198 } 199 } 200 } 201 } 202 203 if (sc->cdce_data_iface == NULL) { 204 aprint_error_dev(self, "no data interface\n"); 205 return; 206 } 207 208 /* 209 * <quote> 210 * The Data Class interface of a networking device shall have a minimum 211 * of two interface settings. The first setting (the default interface 212 * setting) includes no endpoints and therefore no networking traffic is 213 * exchanged whenever the default interface setting is selected. One or 214 * more additional interface settings are used for normal operation, and 215 * therefore each includes a pair of endpoints (one IN, and one OUT) to 216 * exchange network traffic. Select an alternate interface setting to 217 * initialize the network aspects of the device and to enable the 218 * exchange of network traffic. 219 * </quote> 220 * 221 * Some devices, most notably cable modems, include interface settings 222 * that have no IN or OUT endpoint, therefore loop through the list of all 223 * available interface settings looking for one with both IN and OUT 224 * endpoints. 225 */ 226 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 227 cd = usbd_get_config_descriptor(sc->cdce_udev); 228 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); 229 230 for (j = 0; j < numalts; j++) { 231 if (usbd_set_interface(sc->cdce_data_iface, j)) { 232 aprint_error_dev(sc->cdce_dev, 233 "setting alternate interface failed\n"); 234 return; 235 } 236 /* Find endpoints. */ 237 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 238 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; 239 for (i = 0; i < id->bNumEndpoints; i++) { 240 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); 241 if (!ed) { 242 aprint_error_dev(self, 243 "could not read endpoint descriptor\n"); 244 return; 245 } 246 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 247 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 248 sc->cdce_bulkin_no = ed->bEndpointAddress; 249 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 250 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 251 sc->cdce_bulkout_no = ed->bEndpointAddress; 252 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 253 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 254 /* XXX: CDC spec defines an interrupt pipe, but it is not 255 * needed for simple host-to-host applications. */ 256 } else { 257 aprint_error_dev(self, "unexpected endpoint\n"); 258 } 259 } 260 /* If we found something, try and use it... */ 261 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) 262 break; 263 } 264 265 if (sc->cdce_bulkin_no == -1) { 266 aprint_error_dev(self, "could not find data bulk in\n"); 267 return; 268 } 269 if (sc->cdce_bulkout_no == -1 ) { 270 aprint_error_dev(self, "could not find data bulk out\n"); 271 return; 272 } 273 274 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, 275 UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); 276 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || 277 ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { 278 aprint_normal_dev(self, "faking address\n"); 279 eaddr[0]= 0x2a; 280 memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); 281 eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); 282 } 283 284 aprint_normal_dev(self, "address %s\n", ether_sprintf(eaddr)); 285 286 ifp = GET_IFP(sc); 287 ifp->if_softc = sc; 288 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 289 ifp->if_init = cdce_init; 290 ifp->if_ioctl = cdce_ioctl; 291 ifp->if_start = cdce_start; 292 ifp->if_watchdog = cdce_watchdog; 293 strncpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); 294 295 IFQ_SET_READY(&ifp->if_snd); 296 297 if_attach(ifp); 298 ether_ifattach(ifp, eaddr); 299 300 sc->cdce_attached = 1; 301 302 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, 303 sc->cdce_dev); 304 305 if (!pmf_device_register(self, NULL, NULL)) 306 aprint_error_dev(self, "couldn't establish power handler\n"); 307 308 return; 309 } 310 311 int 312 cdce_detach(device_t self, int flags) 313 { 314 struct cdce_softc *sc = device_private(self); 315 struct ifnet *ifp = GET_IFP(sc); 316 int s; 317 318 pmf_device_deregister(self); 319 320 s = splusb(); 321 322 if (!sc->cdce_attached) { 323 splx(s); 324 return 0; 325 } 326 327 if (ifp->if_flags & IFF_RUNNING) 328 cdce_stop(ifp, 1); 329 330 ether_ifdetach(ifp); 331 332 if_detach(ifp); 333 334 mutex_destroy(&sc->cdce_rxlock); 335 mutex_destroy(&sc->cdce_txlock); 336 mutex_destroy(&sc->cdce_lock); 337 338 sc->cdce_attached = 0; 339 splx(s); 340 341 return 0; 342 } 343 344 Static void 345 cdce_start(struct ifnet *ifp) 346 { 347 struct cdce_softc *sc = ifp->if_softc; 348 349 mutex_enter(&sc->cdce_txlock); 350 cdce_start_locked(ifp); 351 mutex_exit(&sc->cdce_txlock); 352 } 353 354 Static void 355 cdce_start_locked(struct ifnet *ifp) 356 { 357 struct cdce_softc *sc = ifp->if_softc; 358 struct mbuf *m_head = NULL; 359 360 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 361 return; 362 363 IFQ_POLL(&ifp->if_snd, m_head); 364 if (m_head == NULL) 365 return; 366 367 if (cdce_encap(sc, m_head, 0)) { 368 return; 369 } 370 371 IFQ_DEQUEUE(&ifp->if_snd, m_head); 372 373 bpf_mtap(ifp, m_head); 374 375 ifp->if_flags |= IFF_OACTIVE; 376 377 ifp->if_timer = 6; 378 } 379 380 Static int 381 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 382 { 383 struct cdce_chain *c = &sc->cdce_cdata.cdce_tx_chain[idx]; 384 int extra = 0; 385 386 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 387 if (sc->cdce_flags & CDCE_ZAURUS) { 388 /* Zaurus wants a 32-bit CRC appended to every frame */ 389 uint32_t crc; 390 391 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 392 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 393 extra = sizeof(crc); 394 } 395 c->cdce_mbuf = m; 396 397 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, m->m_pkthdr.len + extra, 398 USBD_FORCE_SHORT_XFER, 10000, cdce_txeof); 399 usbd_status err = usbd_transfer(c->cdce_xfer); 400 if (err != USBD_IN_PROGRESS) { 401 cdce_stop(GET_IFP(sc), 0); 402 return EIO; 403 } 404 405 sc->cdce_cdata.cdce_tx_cnt++; 406 407 return 0; 408 } 409 410 Static void 411 cdce_stop(struct ifnet *ifp, int disable) 412 { 413 struct cdce_softc * const sc = ifp->if_softc; 414 415 mutex_enter(&sc->cdce_lock); 416 cdce_stop_locked(ifp, disable); 417 mutex_exit(&sc->cdce_lock); 418 } 419 420 Static void 421 cdce_stop_locked(struct ifnet *ifp, int disable) 422 { 423 struct cdce_softc * const sc = ifp->if_softc; 424 usbd_status err; 425 426 ifp->if_timer = 0; 427 428 if (sc->cdce_bulkin_pipe != NULL) { 429 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 430 if (err) 431 printf("%s: abort rx pipe failed: %s\n", 432 device_xname(sc->cdce_dev), usbd_errstr(err)); 433 } 434 435 if (sc->cdce_bulkout_pipe != NULL) { 436 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 437 if (err) 438 printf("%s: abort tx pipe failed: %s\n", 439 device_xname(sc->cdce_dev), usbd_errstr(err)); 440 } 441 442 cdce_rx_list_free(sc); 443 444 cdce_tx_list_free(sc); 445 446 if (sc->cdce_bulkin_pipe != NULL) { 447 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 448 if (err) 449 printf("%s: close rx pipe failed: %s\n", 450 device_xname(sc->cdce_dev), usbd_errstr(err)); 451 sc->cdce_bulkin_pipe = NULL; 452 } 453 454 if (sc->cdce_bulkout_pipe != NULL) { 455 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 456 if (err) 457 printf("%s: close tx pipe failed: %s\n", 458 device_xname(sc->cdce_dev), usbd_errstr(err)); 459 sc->cdce_bulkout_pipe = NULL; 460 } 461 462 ifp->if_timer = 0; 463 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 464 } 465 466 Static int 467 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 468 { 469 struct cdce_softc *sc = ifp->if_softc; 470 int s, error = 0; 471 472 if (sc->cdce_dying) 473 return EIO; 474 475 s = splnet(); 476 error = ether_ioctl(ifp, command, data); 477 splx(s); 478 479 if (error == ENETRESET) 480 error = 0; 481 482 return error; 483 } 484 485 Static void 486 cdce_watchdog(struct ifnet *ifp) 487 { 488 struct cdce_softc *sc = ifp->if_softc; 489 490 if (sc->cdce_dying) 491 return; 492 493 ifp->if_oerrors++; 494 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 495 } 496 497 Static int 498 cdce_init(struct ifnet *ifp) 499 { 500 struct cdce_softc * const sc = ifp->if_softc; 501 502 mutex_enter(&sc->cdce_lock); 503 int ret = cdce_init_locked(ifp); 504 mutex_exit(&sc->cdce_lock); 505 506 return ret; 507 } 508 509 Static int 510 cdce_init_locked(struct ifnet *ifp) 511 { 512 struct cdce_softc * const sc = ifp->if_softc; 513 struct cdce_chain *c; 514 usbd_status err; 515 int i; 516 517 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 518 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 519 if (err) { 520 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 521 usbd_errstr(err)); 522 goto fail; 523 } 524 525 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 526 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 527 if (err) { 528 printf("%s: open tx pipe failed: %s\n", 529 device_xname(sc->cdce_dev), usbd_errstr(err)); 530 goto fail1; 531 } 532 533 if (cdce_tx_list_init(sc)) { 534 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 535 goto fail2; 536 } 537 538 if (cdce_rx_list_init(sc)) { 539 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 540 goto fail3; 541 } 542 543 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 544 c = &sc->cdce_cdata.cdce_rx_chain[i]; 545 546 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 547 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 548 usbd_transfer(c->cdce_xfer); 549 } 550 551 ifp->if_flags |= IFF_RUNNING; 552 ifp->if_flags &= ~IFF_OACTIVE; 553 554 return 0; 555 556 fail3: 557 cdce_tx_list_free(sc); 558 fail2: 559 usbd_close_pipe(sc->cdce_bulkout_pipe); 560 fail1: 561 usbd_close_pipe(sc->cdce_bulkin_pipe); 562 fail: 563 return EIO; 564 } 565 566 Static int 567 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 568 { 569 struct mbuf *m_new = NULL; 570 571 if (m == NULL) { 572 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 573 if (m_new == NULL) { 574 printf("%s: no memory for rx list " 575 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 576 return ENOBUFS; 577 } 578 MCLGET(m_new, M_DONTWAIT); 579 if (!(m_new->m_flags & M_EXT)) { 580 printf("%s: no memory for rx list " 581 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 582 m_freem(m_new); 583 return ENOBUFS; 584 } 585 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 586 } else { 587 m_new = m; 588 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 589 m_new->m_data = m_new->m_ext.ext_buf; 590 } 591 c->cdce_mbuf = m_new; 592 return 0; 593 } 594 595 Static int 596 cdce_rx_list_init(struct cdce_softc *sc) 597 { 598 struct cdce_cdata *cd = &sc->cdce_cdata; 599 struct cdce_chain *c; 600 int i; 601 602 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 603 c = &cd->cdce_rx_chain[i]; 604 c->cdce_sc = sc; 605 c->cdce_idx = i; 606 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 607 return ENOBUFS; 608 if (c->cdce_xfer == NULL) { 609 int err = usbd_create_xfer(sc->cdce_bulkin_pipe, 610 CDCE_BUFSZ, USBD_SHORT_XFER_OK, 0, &c->cdce_xfer); 611 if (err) 612 return err; 613 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 614 } 615 } 616 617 return 0; 618 } 619 620 Static void 621 cdce_rx_list_free(struct cdce_softc *sc) 622 { 623 /* Free RX resources */ 624 for (size_t i = 0; i < CDCE_RX_LIST_CNT; i++) { 625 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 626 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 627 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 628 } 629 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 630 usbd_destroy_xfer(sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 631 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 632 } 633 } 634 } 635 636 Static int 637 cdce_tx_list_init(struct cdce_softc *sc) 638 { 639 struct cdce_cdata *cd = &sc->cdce_cdata; 640 struct cdce_chain *c; 641 int i; 642 643 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 644 c = &cd->cdce_tx_chain[i]; 645 c->cdce_sc = sc; 646 c->cdce_idx = i; 647 c->cdce_mbuf = NULL; 648 if (c->cdce_xfer == NULL) { 649 int err = usbd_create_xfer(sc->cdce_bulkout_pipe, 650 CDCE_BUFSZ, USBD_FORCE_SHORT_XFER, 0, 651 &c->cdce_xfer); 652 if (err) 653 return err; 654 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 655 } 656 } 657 658 return 0; 659 } 660 661 Static void 662 cdce_tx_list_free(struct cdce_softc *sc) 663 { 664 /* Free TX resources */ 665 for (size_t i = 0; i < CDCE_TX_LIST_CNT; i++) { 666 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 667 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 668 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 669 } 670 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 671 usbd_destroy_xfer(sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 672 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 673 } 674 } 675 } 676 677 Static void 678 cdce_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 679 { 680 struct cdce_chain *c = priv; 681 struct cdce_softc *sc = c->cdce_sc; 682 struct ifnet *ifp = GET_IFP(sc); 683 struct mbuf *m; 684 int total_len = 0; 685 int s; 686 687 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 688 return; 689 690 if (status != USBD_NORMAL_COMPLETION) { 691 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 692 return; 693 if (sc->cdce_rxeof_errors == 0) 694 printf("%s: usb error on rx: %s\n", 695 device_xname(sc->cdce_dev), usbd_errstr(status)); 696 if (status == USBD_STALLED) 697 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 698 DELAY(sc->cdce_rxeof_errors * 10000); 699 sc->cdce_rxeof_errors++; 700 goto done; 701 } 702 703 sc->cdce_rxeof_errors = 0; 704 705 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 706 if (sc->cdce_flags & CDCE_ZAURUS) 707 total_len -= 4; /* Strip off CRC added by Zaurus */ 708 if (total_len <= 1) 709 goto done; 710 711 m = c->cdce_mbuf; 712 memcpy(mtod(m, char *), c->cdce_buf, total_len); 713 714 if (total_len < sizeof(struct ether_header)) { 715 ifp->if_ierrors++; 716 goto done; 717 } 718 719 ifp->if_ipackets++; 720 m->m_pkthdr.len = m->m_len = total_len; 721 m->m_pkthdr.rcvif = ifp; 722 723 s = splnet(); 724 725 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 726 ifp->if_ierrors++; 727 goto done1; 728 } 729 730 bpf_mtap(ifp, m); 731 732 (*(ifp)->if_input)((ifp), (m)); 733 734 done1: 735 splx(s); 736 737 done: 738 /* Setup new transfer. */ 739 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 740 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 741 usbd_transfer(c->cdce_xfer); 742 } 743 744 Static void 745 cdce_txeof(struct usbd_xfer *xfer, void *priv, 746 usbd_status status) 747 { 748 struct cdce_chain *c = priv; 749 struct cdce_softc *sc = c->cdce_sc; 750 struct ifnet *ifp = GET_IFP(sc); 751 usbd_status err; 752 753 if (sc->cdce_dying) 754 return; 755 756 int s = splnet(); 757 758 ifp->if_timer = 0; 759 ifp->if_flags &= ~IFF_OACTIVE; 760 761 if (status != USBD_NORMAL_COMPLETION) { 762 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 763 splx(s); 764 return; 765 } 766 ifp->if_oerrors++; 767 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 768 usbd_errstr(status)); 769 if (status == USBD_STALLED) 770 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 771 splx(s); 772 return; 773 } 774 775 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 776 777 if (c->cdce_mbuf != NULL) { 778 m_freem(c->cdce_mbuf); 779 c->cdce_mbuf = NULL; 780 } 781 782 if (err) 783 ifp->if_oerrors++; 784 else 785 ifp->if_opackets++; 786 787 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 788 cdce_start(ifp); 789 790 splx(s); 791 } 792 793 int 794 cdce_activate(device_t self, enum devact act) 795 { 796 struct cdce_softc *sc = device_private(self); 797 798 switch (act) { 799 case DVACT_DEACTIVATE: 800 if_deactivate(GET_IFP(sc)); 801 sc->cdce_dying = 1; 802 return 0; 803 default: 804 return EOPNOTSUPP; 805 } 806 } 807
Indexes created Tue Sep 30 20:09:53 GMT 2025