if_cdce.c revision 1.38.14.12
1 /* $NetBSD: if_cdce.c,v 1.38.14.12 2017/02/05 13:40:46 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 1.38.14.12 2017/02/05 13:40:46 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 <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 void cdce_tx_list_free(struct cdce_softc *); 83 Static int cdce_rx_list_init(struct cdce_softc *); 84 Static void cdce_rx_list_free(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 void cdce_start_locked(struct ifnet *); 92 Static int cdce_ioctl(struct ifnet *, u_long, void *); 93 Static int cdce_init(struct ifnet *); 94 Static int cdce_init_locked(struct ifnet *); 95 Static void cdce_watchdog(struct ifnet *); 96 Static void cdce_stop(struct ifnet *, int); 97 Static void cdce_stop_locked(struct ifnet *, int); 98 99 Static const struct cdce_type cdce_devs[] = { 100 {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION }, 101 {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION }, 102 {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION }, 103 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION }, 104 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION }, 105 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, 106 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, 107 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, 108 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, 109 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, 110 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, 111 }; 112 #define cdce_lookup(v, p) \ 113 ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) 114 115 int cdce_match(device_t, cfdata_t, void *); 116 void cdce_attach(device_t, device_t, void *); 117 int cdce_detach(device_t, int); 118 int cdce_activate(device_t, enum devact); 119 extern struct cfdriver cdce_cd; 120 CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, 121 cdce_detach, cdce_activate); 122 123 int 124 cdce_match(device_t parent, cfdata_t match, void *aux) 125 { 126 struct usbif_attach_arg *uiaa = aux; 127 128 if (cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL) 129 return UMATCH_VENDOR_PRODUCT; 130 131 if (uiaa->uiaa_class == UICLASS_CDC && uiaa->uiaa_subclass == 132 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) 133 return UMATCH_IFACECLASS_GENERIC; 134 135 return UMATCH_NONE; 136 } 137 138 void 139 cdce_attach(device_t parent, device_t self, void *aux) 140 { 141 struct cdce_softc *sc = device_private(self); 142 struct usbif_attach_arg *uiaa = aux; 143 char *devinfop; 144 struct ifnet *ifp; 145 struct usbd_device *dev = uiaa->uiaa_device; 146 const struct cdce_type *t; 147 usb_interface_descriptor_t *id; 148 usb_endpoint_descriptor_t *ed; 149 const usb_cdc_union_descriptor_t *ud; 150 usb_config_descriptor_t *cd; 151 int data_ifcno; 152 int i, j, numalts; 153 u_char eaddr[ETHER_ADDR_LEN]; 154 const usb_cdc_ethernet_descriptor_t *ue; 155 char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; 156 157 sc->cdce_dev = self; 158 159 aprint_naive("\n"); 160 aprint_normal("\n"); 161 162 devinfop = usbd_devinfo_alloc(dev, 0); 163 aprint_normal_dev(self, "%s\n", devinfop); 164 usbd_devinfo_free(devinfop); 165 166 mutex_init(&sc->cdce_lock, MUTEX_DEFAULT, IPL_NONE); 167 mutex_init(&sc->cdce_txlock, MUTEX_DEFAULT, IPL_SOFTUSB); 168 mutex_init(&sc->cdce_rxlock, MUTEX_DEFAULT, IPL_SOFTUSB); 169 170 sc->cdce_udev = uiaa->uiaa_device; 171 sc->cdce_ctl_iface = uiaa->uiaa_iface; 172 173 t = cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product); 174 if (t) 175 sc->cdce_flags = t->cdce_flags; 176 177 if (sc->cdce_flags & CDCE_NO_UNION) 178 sc->cdce_data_iface = sc->cdce_ctl_iface; 179 else { 180 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, 181 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); 182 if (ud == NULL) { 183 aprint_error_dev(self, "no union descriptor\n"); 184 return; 185 } 186 data_ifcno = ud->bSlaveInterface[0]; 187 188 for (i = 0; i < uiaa->uiaa_nifaces; i++) { 189 if (uiaa->uiaa_ifaces[i] != NULL) { 190 id = usbd_get_interface_descriptor( 191 uiaa->uiaa_ifaces[i]); 192 if (id != NULL && id->bInterfaceNumber == 193 data_ifcno) { 194 sc->cdce_data_iface = uiaa->uiaa_ifaces[i]; 195 uiaa->uiaa_ifaces[i] = NULL; 196 } 197 } 198 } 199 } 200 201 if (sc->cdce_data_iface == NULL) { 202 aprint_error_dev(self, "no data interface\n"); 203 return; 204 } 205 206 /* 207 * <quote> 208 * The Data Class interface of a networking device shall have a minimum 209 * of two interface settings. The first setting (the default interface 210 * setting) includes no endpoints and therefore no networking traffic is 211 * exchanged whenever the default interface setting is selected. One or 212 * more additional interface settings are used for normal operation, and 213 * therefore each includes a pair of endpoints (one IN, and one OUT) to 214 * exchange network traffic. Select an alternate interface setting to 215 * initialize the network aspects of the device and to enable the 216 * exchange of network traffic. 217 * </quote> 218 * 219 * Some devices, most notably cable modems, include interface settings 220 * that have no IN or OUT endpoint, therefore loop through the list of all 221 * available interface settings looking for one with both IN and OUT 222 * endpoints. 223 */ 224 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 225 cd = usbd_get_config_descriptor(sc->cdce_udev); 226 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); 227 228 for (j = 0; j < numalts; j++) { 229 if (usbd_set_interface(sc->cdce_data_iface, j)) { 230 aprint_error_dev(sc->cdce_dev, 231 "setting alternate interface failed\n"); 232 return; 233 } 234 /* Find endpoints. */ 235 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 236 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; 237 for (i = 0; i < id->bNumEndpoints; i++) { 238 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); 239 if (!ed) { 240 aprint_error_dev(self, 241 "could not read endpoint descriptor\n"); 242 return; 243 } 244 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 245 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 246 sc->cdce_bulkin_no = ed->bEndpointAddress; 247 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 248 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 249 sc->cdce_bulkout_no = ed->bEndpointAddress; 250 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 251 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 252 /* XXX: CDC spec defines an interrupt pipe, but it is not 253 * needed for simple host-to-host applications. */ 254 } else { 255 aprint_error_dev(self, "unexpected endpoint\n"); 256 } 257 } 258 /* If we found something, try and use it... */ 259 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) 260 break; 261 } 262 263 if (sc->cdce_bulkin_no == -1) { 264 aprint_error_dev(self, "could not find data bulk in\n"); 265 return; 266 } 267 if (sc->cdce_bulkout_no == -1 ) { 268 aprint_error_dev(self, "could not find data bulk out\n"); 269 return; 270 } 271 272 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, 273 UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); 274 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || 275 ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { 276 aprint_normal_dev(self, "faking address\n"); 277 eaddr[0]= 0x2a; 278 memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); 279 eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); 280 } 281 282 aprint_normal_dev(self, "address %s\n", ether_sprintf(eaddr)); 283 284 ifp = GET_IFP(sc); 285 ifp->if_softc = sc; 286 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 287 ifp->if_extflags = IFEF_START_MPSAFE; 288 ifp->if_init = cdce_init; 289 ifp->if_ioctl = cdce_ioctl; 290 ifp->if_start = cdce_start; 291 ifp->if_watchdog = cdce_watchdog; 292 strlcpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); 293 294 IFQ_SET_READY(&ifp->if_snd); 295 296 if_initialize(ifp); 297 sc->cdce_ipq = if_percpuq_create(&sc->cdce_ec.ec_if); 298 ether_ifattach(ifp, eaddr); 299 if_register(ifp); 300 301 sc->cdce_attached = 1; 302 303 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, 304 sc->cdce_dev); 305 306 if (!pmf_device_register(self, NULL, NULL)) 307 aprint_error_dev(self, "couldn't establish power handler\n"); 308 309 return; 310 } 311 312 int 313 cdce_detach(device_t self, int flags) 314 { 315 struct cdce_softc *sc = device_private(self); 316 struct ifnet *ifp = GET_IFP(sc); 317 int s; 318 319 pmf_device_deregister(self); 320 321 s = splusb(); 322 323 if (!sc->cdce_attached) { 324 splx(s); 325 return 0; 326 } 327 328 if (ifp->if_flags & IFF_RUNNING) 329 cdce_stop(ifp, 1); 330 331 ether_ifdetach(ifp); 332 333 if_detach(ifp); 334 335 mutex_destroy(&sc->cdce_rxlock); 336 mutex_destroy(&sc->cdce_txlock); 337 mutex_destroy(&sc->cdce_lock); 338 339 sc->cdce_attached = 0; 340 splx(s); 341 342 return 0; 343 } 344 345 Static void 346 cdce_start(struct ifnet *ifp) 347 { 348 struct cdce_softc *sc = ifp->if_softc; 349 KASSERT(ifp->if_extflags & IFEF_START_MPSAFE); 350 351 mutex_enter(&sc->cdce_txlock); 352 cdce_start_locked(ifp); 353 mutex_exit(&sc->cdce_txlock); 354 } 355 356 Static void 357 cdce_start_locked(struct ifnet *ifp) 358 { 359 struct cdce_softc *sc = ifp->if_softc; 360 struct mbuf *m_head = NULL; 361 362 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 363 return; 364 365 IFQ_POLL(&ifp->if_snd, m_head); 366 if (m_head == NULL) 367 return; 368 369 if (cdce_encap(sc, m_head, 0)) { 370 return; 371 } 372 373 IFQ_DEQUEUE(&ifp->if_snd, m_head); 374 375 bpf_mtap(ifp, m_head); 376 377 ifp->if_flags |= IFF_OACTIVE; 378 379 ifp->if_timer = 6; 380 } 381 382 Static int 383 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 384 { 385 struct cdce_chain *c = &sc->cdce_cdata.cdce_tx_chain[idx]; 386 int extra = 0; 387 388 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 389 if (sc->cdce_flags & CDCE_ZAURUS) { 390 /* Zaurus wants a 32-bit CRC appended to every frame */ 391 uint32_t crc; 392 393 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 394 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 395 extra = sizeof(crc); 396 } 397 c->cdce_mbuf = m; 398 399 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, m->m_pkthdr.len + extra, 400 USBD_FORCE_SHORT_XFER, 10000, cdce_txeof); 401 usbd_status err = usbd_transfer(c->cdce_xfer); 402 if (err != USBD_IN_PROGRESS) { 403 cdce_stop(GET_IFP(sc), 0); 404 return EIO; 405 } 406 407 sc->cdce_cdata.cdce_tx_cnt++; 408 409 return 0; 410 } 411 412 Static void 413 cdce_stop(struct ifnet *ifp, int disable) 414 { 415 struct cdce_softc * const sc = ifp->if_softc; 416 417 mutex_enter(&sc->cdce_lock); 418 cdce_stop_locked(ifp, disable); 419 mutex_exit(&sc->cdce_lock); 420 } 421 422 Static void 423 cdce_stop_locked(struct ifnet *ifp, int disable) 424 { 425 struct cdce_softc * const sc = ifp->if_softc; 426 usbd_status err; 427 428 ifp->if_timer = 0; 429 430 if (sc->cdce_bulkin_pipe != NULL) { 431 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 432 if (err) 433 printf("%s: abort rx pipe failed: %s\n", 434 device_xname(sc->cdce_dev), usbd_errstr(err)); 435 } 436 437 if (sc->cdce_bulkout_pipe != NULL) { 438 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 439 if (err) 440 printf("%s: abort tx pipe failed: %s\n", 441 device_xname(sc->cdce_dev), usbd_errstr(err)); 442 } 443 444 cdce_rx_list_free(sc); 445 446 cdce_tx_list_free(sc); 447 448 if (sc->cdce_bulkin_pipe != NULL) { 449 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 450 if (err) 451 printf("%s: close rx pipe failed: %s\n", 452 device_xname(sc->cdce_dev), usbd_errstr(err)); 453 sc->cdce_bulkin_pipe = NULL; 454 } 455 456 if (sc->cdce_bulkout_pipe != NULL) { 457 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 458 if (err) 459 printf("%s: close tx pipe failed: %s\n", 460 device_xname(sc->cdce_dev), usbd_errstr(err)); 461 sc->cdce_bulkout_pipe = NULL; 462 } 463 464 ifp->if_timer = 0; 465 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 466 } 467 468 Static int 469 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 470 { 471 struct cdce_softc *sc = ifp->if_softc; 472 int s, error = 0; 473 474 if (sc->cdce_dying) 475 return EIO; 476 477 s = splnet(); 478 error = ether_ioctl(ifp, command, data); 479 splx(s); 480 481 if (error == ENETRESET) 482 error = 0; 483 484 return error; 485 } 486 487 Static void 488 cdce_watchdog(struct ifnet *ifp) 489 { 490 struct cdce_softc *sc = ifp->if_softc; 491 492 if (sc->cdce_dying) 493 return; 494 495 ifp->if_oerrors++; 496 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 497 } 498 499 Static int 500 cdce_init(struct ifnet *ifp) 501 { 502 struct cdce_softc * const sc = ifp->if_softc; 503 504 mutex_enter(&sc->cdce_lock); 505 int ret = cdce_init_locked(ifp); 506 mutex_exit(&sc->cdce_lock); 507 508 return ret; 509 } 510 511 Static int 512 cdce_init_locked(struct ifnet *ifp) 513 { 514 struct cdce_softc * const sc = ifp->if_softc; 515 struct cdce_chain *c; 516 usbd_status err; 517 int i; 518 519 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 520 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 521 if (err) { 522 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 523 usbd_errstr(err)); 524 goto fail; 525 } 526 527 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 528 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 529 if (err) { 530 printf("%s: open tx pipe failed: %s\n", 531 device_xname(sc->cdce_dev), usbd_errstr(err)); 532 goto fail1; 533 } 534 535 if (cdce_tx_list_init(sc)) { 536 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 537 goto fail2; 538 } 539 540 if (cdce_rx_list_init(sc)) { 541 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 542 goto fail3; 543 } 544 545 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 546 c = &sc->cdce_cdata.cdce_rx_chain[i]; 547 548 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 549 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 550 usbd_transfer(c->cdce_xfer); 551 } 552 553 ifp->if_flags |= IFF_RUNNING; 554 ifp->if_flags &= ~IFF_OACTIVE; 555 556 return 0; 557 558 fail3: 559 cdce_tx_list_free(sc); 560 fail2: 561 usbd_close_pipe(sc->cdce_bulkout_pipe); 562 fail1: 563 usbd_close_pipe(sc->cdce_bulkin_pipe); 564 fail: 565 return EIO; 566 } 567 568 Static int 569 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 570 { 571 struct mbuf *m_new = NULL; 572 573 if (m == NULL) { 574 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 575 if (m_new == NULL) { 576 printf("%s: no memory for rx list " 577 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 578 return ENOBUFS; 579 } 580 MCLGET(m_new, M_DONTWAIT); 581 if (!(m_new->m_flags & M_EXT)) { 582 printf("%s: no memory for rx list " 583 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 584 m_freem(m_new); 585 return ENOBUFS; 586 } 587 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 588 } else { 589 m_new = m; 590 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 591 m_new->m_data = m_new->m_ext.ext_buf; 592 } 593 c->cdce_mbuf = m_new; 594 return 0; 595 } 596 597 Static int 598 cdce_rx_list_init(struct cdce_softc *sc) 599 { 600 struct cdce_cdata *cd = &sc->cdce_cdata; 601 struct cdce_chain *c; 602 int i; 603 604 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 605 c = &cd->cdce_rx_chain[i]; 606 c->cdce_sc = sc; 607 c->cdce_idx = i; 608 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 609 return ENOBUFS; 610 if (c->cdce_xfer == NULL) { 611 int err = usbd_create_xfer(sc->cdce_bulkin_pipe, 612 CDCE_BUFSZ, USBD_SHORT_XFER_OK, 0, &c->cdce_xfer); 613 if (err) 614 return err; 615 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 616 } 617 } 618 619 return 0; 620 } 621 622 Static void 623 cdce_rx_list_free(struct cdce_softc *sc) 624 { 625 /* Free RX resources */ 626 for (size_t i = 0; i < CDCE_RX_LIST_CNT; i++) { 627 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 628 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 629 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 630 } 631 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 632 usbd_destroy_xfer(sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 633 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 634 } 635 } 636 } 637 638 Static int 639 cdce_tx_list_init(struct cdce_softc *sc) 640 { 641 struct cdce_cdata *cd = &sc->cdce_cdata; 642 struct cdce_chain *c; 643 int i; 644 645 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 646 c = &cd->cdce_tx_chain[i]; 647 c->cdce_sc = sc; 648 c->cdce_idx = i; 649 c->cdce_mbuf = NULL; 650 if (c->cdce_xfer == NULL) { 651 int err = usbd_create_xfer(sc->cdce_bulkout_pipe, 652 CDCE_BUFSZ, USBD_FORCE_SHORT_XFER, 0, 653 &c->cdce_xfer); 654 if (err) 655 return err; 656 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 657 } 658 } 659 660 return 0; 661 } 662 663 Static void 664 cdce_tx_list_free(struct cdce_softc *sc) 665 { 666 /* Free TX resources */ 667 for (size_t i = 0; i < CDCE_TX_LIST_CNT; i++) { 668 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 669 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 670 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 671 } 672 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 673 usbd_destroy_xfer(sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 674 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 675 } 676 } 677 } 678 679 Static void 680 cdce_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 681 { 682 struct cdce_chain *c = priv; 683 struct cdce_softc *sc = c->cdce_sc; 684 struct ifnet *ifp = GET_IFP(sc); 685 struct mbuf *m; 686 int total_len = 0; 687 688 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 689 return; 690 691 if (status != USBD_NORMAL_COMPLETION) { 692 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 693 return; 694 if (sc->cdce_rxeof_errors == 0) 695 printf("%s: usb error on rx: %s\n", 696 device_xname(sc->cdce_dev), usbd_errstr(status)); 697 if (status == USBD_STALLED) 698 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 699 DELAY(sc->cdce_rxeof_errors * 10000); 700 sc->cdce_rxeof_errors++; 701 goto done; 702 } 703 704 sc->cdce_rxeof_errors = 0; 705 706 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 707 if (sc->cdce_flags & CDCE_ZAURUS) 708 total_len -= 4; /* Strip off CRC added by Zaurus */ 709 if (total_len <= 1) 710 goto done; 711 712 m = c->cdce_mbuf; 713 memcpy(mtod(m, char *), c->cdce_buf, total_len); 714 715 if (total_len < sizeof(struct ether_header)) { 716 ifp->if_ierrors++; 717 goto done; 718 } 719 720 m->m_pkthdr.len = m->m_len = total_len; 721 m_set_rcvif(m, ifp); 722 723 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 724 ifp->if_ierrors++; 725 goto done; 726 } 727 728 if_percpuq_enqueue(sc->cdce_ipq, (m)); 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; 745 746 if (sc->cdce_dying) 747 return; 748 749 int s = splnet(); 750 751 ifp->if_timer = 0; 752 ifp->if_flags &= ~IFF_OACTIVE; 753 754 if (status != USBD_NORMAL_COMPLETION) { 755 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 756 splx(s); 757 return; 758 } 759 ifp->if_oerrors++; 760 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 761 usbd_errstr(status)); 762 if (status == USBD_STALLED) 763 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 764 splx(s); 765 return; 766 } 767 768 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 769 770 if (c->cdce_mbuf != NULL) { 771 m_freem(c->cdce_mbuf); 772 c->cdce_mbuf = NULL; 773 } 774 775 if (err) 776 ifp->if_oerrors++; 777 else 778 ifp->if_opackets++; 779 780 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 781 cdce_start(ifp); 782 783 splx(s); 784 } 785 786 int 787 cdce_activate(device_t self, enum devact act) 788 { 789 struct cdce_softc *sc = device_private(self); 790 791 switch (act) { 792 case DVACT_DEACTIVATE: 793 if_deactivate(GET_IFP(sc)); 794 sc->cdce_dying = 1; 795 return 0; 796 default: 797 return EOPNOTSUPP; 798 } 799 } 800
Indexes created Tue Sep 30 20:09:53 GMT 2025