if_cdce.c revision 1.49
1 /* $NetBSD: if_cdce.c,v 1.49 2019/06/22 04:45:04 mrg 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 1.49 2019/06/22 04:45:04 mrg 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 #include <sys/rndsource.h> 58 59 #include <net/if.h> 60 #include <net/if_arp.h> 61 #include <net/if_dl.h> 62 #include <net/if_media.h> 63 64 #include <net/bpf.h> 65 66 #include <net/if_ether.h> 67 #ifdef INET 68 #include <netinet/in.h> 69 #include <netinet/if_inarp.h> 70 #endif 71 72 #include <dev/usb/usb.h> 73 #include <dev/usb/usbdi.h> 74 #include <dev/usb/usbdi_util.h> 75 #include <dev/usb/usbdevs.h> 76 #include <dev/usb/usbcdc.h> 77 78 #include <dev/usb/if_cdcereg.h> 79 80 struct cdce_type { 81 struct usb_devno cdce_dev; 82 uint16_t cdce_flags; 83 #define CDCE_ZAURUS 1 84 #define CDCE_NO_UNION 2 85 }; 86 87 struct cdce_softc; 88 89 struct cdce_chain { 90 struct cdce_softc *cdce_sc; 91 struct usbd_xfer *cdce_xfer; 92 char *cdce_buf; 93 struct mbuf *cdce_mbuf; 94 int cdce_accum; 95 int cdce_idx; 96 }; 97 98 struct cdce_cdata { 99 struct cdce_chain cdce_rx_chain[CDCE_RX_LIST_CNT]; 100 struct cdce_chain cdce_tx_chain[CDCE_TX_LIST_CNT]; 101 int cdce_tx_prod; 102 int cdce_tx_cons; 103 int cdce_tx_cnt; 104 int cdce_rx_prod; 105 }; 106 107 struct cdce_softc { 108 device_t cdce_dev; 109 struct ethercom cdce_ec; 110 krndsource_t rnd_source; 111 #define GET_IFP(sc) (&(sc)->cdce_ec.ec_if) 112 struct usbd_device * cdce_udev; 113 struct usbd_interface * cdce_ctl_iface; 114 struct usbd_interface * cdce_data_iface; 115 int cdce_bulkin_no; 116 struct usbd_pipe * cdce_bulkin_pipe; 117 int cdce_bulkout_no; 118 struct usbd_pipe * cdce_bulkout_pipe; 119 char cdce_dying; 120 int cdce_unit; 121 struct cdce_cdata cdce_cdata; 122 int cdce_rxeof_errors; 123 uint16_t cdce_flags; 124 char cdce_attached; 125 126 kmutex_t cdce_start_lock; 127 }; 128 129 static int cdce_tx_list_init(struct cdce_softc *); 130 static int cdce_rx_list_init(struct cdce_softc *); 131 static int cdce_newbuf(struct cdce_softc *, struct cdce_chain *, 132 struct mbuf *); 133 static int cdce_encap(struct cdce_softc *, struct mbuf *, int); 134 static void cdce_rxeof(struct usbd_xfer *, void *, usbd_status); 135 static void cdce_txeof(struct usbd_xfer *, void *, usbd_status); 136 static void cdce_start(struct ifnet *); 137 static int cdce_ioctl(struct ifnet *, u_long, void *); 138 static void cdce_init(void *); 139 static void cdce_watchdog(struct ifnet *); 140 static void cdce_stop(struct cdce_softc *); 141 142 static const struct cdce_type cdce_devs[] = { 143 {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION }, 144 {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION }, 145 {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION }, 146 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION }, 147 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION }, 148 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, 149 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, 150 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, 151 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, 152 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, 153 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, 154 }; 155 #define cdce_lookup(v, p) \ 156 ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) 157 158 int cdce_match(device_t, cfdata_t, void *); 159 void cdce_attach(device_t, device_t, void *); 160 int cdce_detach(device_t, int); 161 int cdce_activate(device_t, enum devact); 162 163 CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, 164 cdce_detach, cdce_activate); 165 166 int 167 cdce_match(device_t parent, cfdata_t match, void *aux) 168 { 169 struct usbif_attach_arg *uiaa = aux; 170 171 if (cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL) 172 return UMATCH_VENDOR_PRODUCT; 173 174 if (uiaa->uiaa_class == UICLASS_CDC && uiaa->uiaa_subclass == 175 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) 176 return UMATCH_IFACECLASS_GENERIC; 177 178 return UMATCH_NONE; 179 } 180 181 void 182 cdce_attach(device_t parent, device_t self, void *aux) 183 { 184 struct cdce_softc *sc = device_private(self); 185 struct usbif_attach_arg *uiaa = aux; 186 char *devinfop; 187 int s; 188 struct ifnet *ifp; 189 struct usbd_device *dev = uiaa->uiaa_device; 190 const struct cdce_type *t; 191 usb_interface_descriptor_t *id; 192 usb_endpoint_descriptor_t *ed; 193 const usb_cdc_union_descriptor_t *ud; 194 usb_config_descriptor_t *cd; 195 int data_ifcno; 196 int i, j, numalts; 197 u_char eaddr[ETHER_ADDR_LEN]; 198 const usb_cdc_ethernet_descriptor_t *ue; 199 char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; 200 201 sc->cdce_dev = self; 202 203 aprint_naive("\n"); 204 aprint_normal("\n"); 205 206 devinfop = usbd_devinfo_alloc(dev, 0); 207 aprint_normal_dev(self, "%s\n", devinfop); 208 usbd_devinfo_free(devinfop); 209 210 sc->cdce_udev = uiaa->uiaa_device; 211 sc->cdce_ctl_iface = uiaa->uiaa_iface; 212 213 t = cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product); 214 if (t) 215 sc->cdce_flags = t->cdce_flags; 216 217 if (sc->cdce_flags & CDCE_NO_UNION) 218 sc->cdce_data_iface = sc->cdce_ctl_iface; 219 else { 220 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, 221 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); 222 if (ud == NULL) { 223 aprint_error_dev(self, "no union descriptor\n"); 224 return; 225 } 226 data_ifcno = ud->bSlaveInterface[0]; 227 228 for (i = 0; i < uiaa->uiaa_nifaces; i++) { 229 if (uiaa->uiaa_ifaces[i] != NULL) { 230 id = usbd_get_interface_descriptor( 231 uiaa->uiaa_ifaces[i]); 232 if (id != NULL && id->bInterfaceNumber == 233 data_ifcno) { 234 sc->cdce_data_iface = uiaa->uiaa_ifaces[i]; 235 uiaa->uiaa_ifaces[i] = NULL; 236 } 237 } 238 } 239 } 240 241 if (sc->cdce_data_iface == NULL) { 242 aprint_error_dev(self, "no data interface\n"); 243 return; 244 } 245 246 /* 247 * <quote> 248 * The Data Class interface of a networking device shall have a minimum 249 * of two interface settings. The first setting (the default interface 250 * setting) includes no endpoints and therefore no networking traffic is 251 * exchanged whenever the default interface setting is selected. One or 252 * more additional interface settings are used for normal operation, and 253 * therefore each includes a pair of endpoints (one IN, and one OUT) to 254 * exchange network traffic. Select an alternate interface setting to 255 * initialize the network aspects of the device and to enable the 256 * exchange of network traffic. 257 * </quote> 258 * 259 * Some devices, most notably cable modems, include interface settings 260 * that have no IN or OUT endpoint, therefore loop through the list of all 261 * available interface settings looking for one with both IN and OUT 262 * endpoints. 263 */ 264 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 265 cd = usbd_get_config_descriptor(sc->cdce_udev); 266 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); 267 268 for (j = 0; j < numalts; j++) { 269 if (usbd_set_interface(sc->cdce_data_iface, j)) { 270 aprint_error_dev(sc->cdce_dev, 271 "setting alternate interface failed\n"); 272 return; 273 } 274 /* Find endpoints. */ 275 id = usbd_get_interface_descriptor(sc->cdce_data_iface); 276 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; 277 for (i = 0; i < id->bNumEndpoints; i++) { 278 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); 279 if (!ed) { 280 aprint_error_dev(self, 281 "could not read endpoint descriptor\n"); 282 return; 283 } 284 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 285 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 286 sc->cdce_bulkin_no = ed->bEndpointAddress; 287 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && 288 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { 289 sc->cdce_bulkout_no = ed->bEndpointAddress; 290 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && 291 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { 292 /* XXX: CDC spec defines an interrupt pipe, but it is not 293 * needed for simple host-to-host applications. */ 294 } else { 295 aprint_error_dev(self, "unexpected endpoint\n"); 296 } 297 } 298 /* If we found something, try and use it... */ 299 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) 300 break; 301 } 302 303 if (sc->cdce_bulkin_no == -1) { 304 aprint_error_dev(self, "could not find data bulk in\n"); 305 return; 306 } 307 if (sc->cdce_bulkout_no == -1 ) { 308 aprint_error_dev(self, "could not find data bulk out\n"); 309 return; 310 } 311 312 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, 313 UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); 314 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || 315 ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { 316 aprint_normal_dev(self, "faking address\n"); 317 eaddr[0]= 0x2a; 318 memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); 319 eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); 320 } 321 322 s = splnet(); 323 324 aprint_normal_dev(self, "address %s\n", ether_sprintf(eaddr)); 325 326 ifp = GET_IFP(sc); 327 ifp->if_softc = sc; 328 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 329 ifp->if_ioctl = cdce_ioctl; 330 ifp->if_start = cdce_start; 331 ifp->if_watchdog = cdce_watchdog; 332 strlcpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); 333 334 IFQ_SET_READY(&ifp->if_snd); 335 336 if_attach(ifp); 337 ether_ifattach(ifp, eaddr); 338 339 sc->cdce_attached = 1; 340 splx(s); 341 342 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, 343 sc->cdce_dev); 344 345 if (!pmf_device_register(self, NULL, NULL)) 346 aprint_error_dev(self, "couldn't establish power handler\n"); 347 348 return; 349 } 350 351 int 352 cdce_detach(device_t self, int flags) 353 { 354 struct cdce_softc *sc = device_private(self); 355 struct ifnet *ifp = GET_IFP(sc); 356 int s; 357 358 pmf_device_deregister(self); 359 360 s = splusb(); 361 362 if (!sc->cdce_attached) { 363 splx(s); 364 return 0; 365 } 366 367 if (ifp->if_flags & IFF_RUNNING) 368 cdce_stop(sc); 369 370 ether_ifdetach(ifp); 371 372 if_detach(ifp); 373 374 sc->cdce_attached = 0; 375 splx(s); 376 377 return 0; 378 } 379 380 static void 381 cdce_start(struct ifnet *ifp) 382 { 383 struct cdce_softc *sc = ifp->if_softc; 384 struct mbuf *m_head = NULL; 385 386 if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) 387 return; 388 389 IFQ_POLL(&ifp->if_snd, m_head); 390 if (m_head == NULL) 391 return; 392 393 if (cdce_encap(sc, m_head, 0)) { 394 ifp->if_flags |= IFF_OACTIVE; 395 return; 396 } 397 398 IFQ_DEQUEUE(&ifp->if_snd, m_head); 399 400 bpf_mtap(ifp, m_head, BPF_D_OUT); 401 402 ifp->if_flags |= IFF_OACTIVE; 403 404 ifp->if_timer = 6; 405 } 406 407 static int 408 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) 409 { 410 struct cdce_chain *c; 411 usbd_status err; 412 int extra = 0; 413 414 c = &sc->cdce_cdata.cdce_tx_chain[idx]; 415 416 m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); 417 if (sc->cdce_flags & CDCE_ZAURUS) { 418 /* Zaurus wants a 32-bit CRC appended to every frame */ 419 uint32_t crc; 420 421 crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); 422 memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); 423 extra = sizeof(crc); 424 } 425 c->cdce_mbuf = m; 426 427 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, m->m_pkthdr.len + extra, 428 USBD_FORCE_SHORT_XFER, 10000, cdce_txeof); 429 err = usbd_transfer(c->cdce_xfer); 430 if (err != USBD_IN_PROGRESS) { 431 cdce_stop(sc); 432 return EIO; 433 } 434 435 sc->cdce_cdata.cdce_tx_cnt++; 436 437 return 0; 438 } 439 440 static void 441 cdce_stop(struct cdce_softc *sc) 442 { 443 usbd_status err; 444 struct ifnet *ifp = GET_IFP(sc); 445 int i; 446 447 ifp->if_timer = 0; 448 449 if (sc->cdce_bulkin_pipe != NULL) { 450 err = usbd_abort_pipe(sc->cdce_bulkin_pipe); 451 if (err) 452 printf("%s: abort rx pipe failed: %s\n", 453 device_xname(sc->cdce_dev), usbd_errstr(err)); 454 } 455 456 if (sc->cdce_bulkout_pipe != NULL) { 457 err = usbd_abort_pipe(sc->cdce_bulkout_pipe); 458 if (err) 459 printf("%s: abort tx pipe failed: %s\n", 460 device_xname(sc->cdce_dev), usbd_errstr(err)); 461 } 462 463 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 464 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { 465 m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); 466 sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; 467 } 468 if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { 469 usbd_destroy_xfer 470 (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); 471 sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; 472 } 473 } 474 475 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 476 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { 477 m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); 478 sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; 479 } 480 if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { 481 usbd_destroy_xfer( 482 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); 483 sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; 484 } 485 } 486 487 if (sc->cdce_bulkin_pipe != NULL) { 488 err = usbd_close_pipe(sc->cdce_bulkin_pipe); 489 if (err) 490 printf("%s: close rx pipe failed: %s\n", 491 device_xname(sc->cdce_dev), usbd_errstr(err)); 492 sc->cdce_bulkin_pipe = NULL; 493 } 494 495 if (sc->cdce_bulkout_pipe != NULL) { 496 err = usbd_close_pipe(sc->cdce_bulkout_pipe); 497 if (err) 498 printf("%s: close tx pipe failed: %s\n", 499 device_xname(sc->cdce_dev), usbd_errstr(err)); 500 sc->cdce_bulkout_pipe = NULL; 501 } 502 503 ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); 504 } 505 506 static int 507 cdce_ioctl(struct ifnet *ifp, u_long command, void *data) 508 { 509 struct cdce_softc *sc = ifp->if_softc; 510 struct ifaddr *ifa = (struct ifaddr *)data; 511 struct ifreq *ifr = (struct ifreq *)data; 512 int s, error = 0; 513 514 if (sc->cdce_dying) 515 return EIO; 516 517 s = splnet(); 518 519 switch(command) { 520 case SIOCINITIFADDR: 521 ifp->if_flags |= IFF_UP; 522 cdce_init(sc); 523 switch (ifa->ifa_addr->sa_family) { 524 #ifdef INET 525 case AF_INET: 526 arp_ifinit(ifp, ifa); 527 break; 528 #endif /* INET */ 529 } 530 break; 531 532 case SIOCSIFMTU: 533 if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) 534 error = EINVAL; 535 else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) 536 error = 0; 537 break; 538 539 case SIOCSIFFLAGS: 540 if ((error = ifioctl_common(ifp, command, data)) != 0) 541 break; 542 /* XXX re-use ether_ioctl() */ 543 switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { 544 case IFF_UP: 545 cdce_init(sc); 546 break; 547 case IFF_RUNNING: 548 cdce_stop(sc); 549 break; 550 default: 551 break; 552 } 553 break; 554 555 default: 556 error = ether_ioctl(ifp, command, data); 557 break; 558 } 559 560 splx(s); 561 562 if (error == ENETRESET) 563 error = 0; 564 565 return error; 566 } 567 568 static void 569 cdce_watchdog(struct ifnet *ifp) 570 { 571 struct cdce_softc *sc = ifp->if_softc; 572 573 if (sc->cdce_dying) 574 return; 575 576 ifp->if_oerrors++; 577 printf("%s: watchdog timeout\n", device_xname(sc->cdce_dev)); 578 } 579 580 static void 581 cdce_init(void *xsc) 582 { 583 struct cdce_softc *sc = xsc; 584 struct ifnet *ifp = GET_IFP(sc); 585 struct cdce_chain *c; 586 usbd_status err; 587 int s, i; 588 589 if (ifp->if_flags & IFF_RUNNING) 590 return; 591 592 s = splnet(); 593 594 /* Maybe set multicast / broadcast here??? */ 595 596 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, 597 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); 598 if (err) { 599 printf("%s: open rx pipe failed: %s\n", device_xname(sc->cdce_dev), 600 usbd_errstr(err)); 601 splx(s); 602 return; 603 } 604 605 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, 606 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); 607 if (err) { 608 printf("%s: open tx pipe failed: %s\n", 609 device_xname(sc->cdce_dev), usbd_errstr(err)); 610 splx(s); 611 return; 612 } 613 614 if (cdce_tx_list_init(sc)) { 615 printf("%s: tx list init failed\n", device_xname(sc->cdce_dev)); 616 splx(s); 617 return; 618 } 619 620 if (cdce_rx_list_init(sc)) { 621 printf("%s: rx list init failed\n", device_xname(sc->cdce_dev)); 622 splx(s); 623 return; 624 } 625 626 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 627 c = &sc->cdce_cdata.cdce_rx_chain[i]; 628 629 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 630 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 631 usbd_transfer(c->cdce_xfer); 632 } 633 634 ifp->if_flags |= IFF_RUNNING; 635 ifp->if_flags &= ~IFF_OACTIVE; 636 637 splx(s); 638 } 639 640 static int 641 cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) 642 { 643 struct mbuf *m_new = NULL; 644 645 if (m == NULL) { 646 MGETHDR(m_new, M_DONTWAIT, MT_DATA); 647 if (m_new == NULL) { 648 printf("%s: no memory for rx list " 649 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 650 return ENOBUFS; 651 } 652 MCLGET(m_new, M_DONTWAIT); 653 if (!(m_new->m_flags & M_EXT)) { 654 printf("%s: no memory for rx list " 655 "-- packet dropped!\n", device_xname(sc->cdce_dev)); 656 m_freem(m_new); 657 return ENOBUFS; 658 } 659 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 660 } else { 661 m_new = m; 662 m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; 663 m_new->m_data = m_new->m_ext.ext_buf; 664 } 665 c->cdce_mbuf = m_new; 666 return 0; 667 } 668 669 static int 670 cdce_rx_list_init(struct cdce_softc *sc) 671 { 672 struct cdce_cdata *cd; 673 struct cdce_chain *c; 674 int i; 675 676 cd = &sc->cdce_cdata; 677 for (i = 0; i < CDCE_RX_LIST_CNT; i++) { 678 c = &cd->cdce_rx_chain[i]; 679 c->cdce_sc = sc; 680 c->cdce_idx = i; 681 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) 682 return ENOBUFS; 683 if (c->cdce_xfer == NULL) { 684 int err = usbd_create_xfer(sc->cdce_bulkin_pipe, 685 CDCE_BUFSZ, 0, 0, &c->cdce_xfer); 686 if (err) 687 return err; 688 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 689 } 690 } 691 692 return 0; 693 } 694 695 static int 696 cdce_tx_list_init(struct cdce_softc *sc) 697 { 698 struct cdce_cdata *cd; 699 struct cdce_chain *c; 700 int i; 701 702 cd = &sc->cdce_cdata; 703 for (i = 0; i < CDCE_TX_LIST_CNT; i++) { 704 c = &cd->cdce_tx_chain[i]; 705 c->cdce_sc = sc; 706 c->cdce_idx = i; 707 c->cdce_mbuf = NULL; 708 if (c->cdce_xfer == NULL) { 709 int err = usbd_create_xfer(sc->cdce_bulkout_pipe, 710 CDCE_BUFSZ, USBD_FORCE_SHORT_XFER, 0, 711 &c->cdce_xfer); 712 if (err) 713 return err; 714 c->cdce_buf = usbd_get_buffer(c->cdce_xfer); 715 } 716 } 717 718 return 0; 719 } 720 721 static void 722 cdce_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) 723 { 724 struct cdce_chain *c = priv; 725 struct cdce_softc *sc = c->cdce_sc; 726 struct ifnet *ifp = GET_IFP(sc); 727 struct mbuf *m; 728 int total_len = 0; 729 int s; 730 731 if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) 732 return; 733 734 if (status != USBD_NORMAL_COMPLETION) { 735 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) 736 return; 737 if (sc->cdce_rxeof_errors == 0) 738 printf("%s: usb error on rx: %s\n", 739 device_xname(sc->cdce_dev), usbd_errstr(status)); 740 if (status == USBD_STALLED) 741 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); 742 DELAY(sc->cdce_rxeof_errors * 10000); 743 sc->cdce_rxeof_errors++; 744 goto done; 745 } 746 747 sc->cdce_rxeof_errors = 0; 748 749 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); 750 if (sc->cdce_flags & CDCE_ZAURUS) 751 total_len -= 4; /* Strip off CRC added by Zaurus */ 752 if (total_len <= 1) 753 goto done; 754 755 m = c->cdce_mbuf; 756 memcpy(mtod(m, char *), c->cdce_buf, total_len); 757 758 if (total_len < sizeof(struct ether_header)) { 759 ifp->if_ierrors++; 760 goto done; 761 } 762 763 m->m_pkthdr.len = m->m_len = total_len; 764 m_set_rcvif(m, ifp); 765 766 s = splnet(); 767 768 if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { 769 ifp->if_ierrors++; 770 goto done1; 771 } 772 773 if_percpuq_enqueue((ifp)->if_percpuq, (m)); 774 775 done1: 776 splx(s); 777 778 done: 779 /* Setup new transfer. */ 780 usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, 781 USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); 782 usbd_transfer(c->cdce_xfer); 783 } 784 785 static void 786 cdce_txeof(struct usbd_xfer *xfer, void *priv, 787 usbd_status status) 788 { 789 struct cdce_chain *c = priv; 790 struct cdce_softc *sc = c->cdce_sc; 791 struct ifnet *ifp = GET_IFP(sc); 792 usbd_status err; 793 int s; 794 795 if (sc->cdce_dying) 796 return; 797 798 s = splnet(); 799 800 ifp->if_timer = 0; 801 ifp->if_flags &= ~IFF_OACTIVE; 802 803 if (status != USBD_NORMAL_COMPLETION) { 804 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { 805 splx(s); 806 return; 807 } 808 ifp->if_oerrors++; 809 printf("%s: usb error on tx: %s\n", device_xname(sc->cdce_dev), 810 usbd_errstr(status)); 811 if (status == USBD_STALLED) 812 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); 813 splx(s); 814 return; 815 } 816 817 usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); 818 819 if (c->cdce_mbuf != NULL) { 820 m_freem(c->cdce_mbuf); 821 c->cdce_mbuf = NULL; 822 } 823 824 if (err) 825 ifp->if_oerrors++; 826 else 827 ifp->if_opackets++; 828 829 if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) 830 cdce_start(ifp); 831 832 splx(s); 833 } 834 835 int 836 cdce_activate(device_t self, enum devact act) 837 { 838 struct cdce_softc *sc = device_private(self); 839 840 switch (act) { 841 case DVACT_DEACTIVATE: 842 if_deactivate(GET_IFP(sc)); 843 sc->cdce_dying = 1; 844 return 0; 845 default: 846 return EOPNOTSUPP; 847 } 848 } 849
Indexes created Mon Sep 29 21:09:56 GMT 2025