1 /* $NetBSD: if_cdce.c,v 1.4 2004/10/24 12:50:54 augustss Exp $ */ 2 3 /*- 4 * SPDX-License-Identifier: BSD-4-Clause 5 * 6 * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul@windriver.com> 7 * Copyright (c) 2003-2005 Craig Boston 8 * Copyright (c) 2004 Daniel Hartmeier 9 * Copyright (c) 2009 Hans Petter Selasky 10 * All rights reserved. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by Bill Paul. 23 * 4. Neither the name of the author nor the names of any co-contributors 24 * may be used to endorse or promote products derived from this software 25 * without specific prior written permission. 26 * 27 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 28 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 29 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 30 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul, THE VOICES IN HIS HEAD OR 31 * THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 32 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 33 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 34 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 35 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 36 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 37 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 38 */ 39 40 /* 41 * USB Communication Device Class (Ethernet Networking Control Model) 42 * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf 43 */ 44 45 /* 46 * USB Network Control Model (NCM) 47 * http://www.usb.org/developers/devclass_docs/NCM10.zip 48 */ 49 50 #include <sys/cdefs.h> 51 __FBSDID("$FreeBSD$"); 52 53 #include <sys/gsb_crc32.h> 54 #include <sys/eventhandler.h> 55 #include <sys/stdint.h> 56 #include <sys/stddef.h> 57 #include <sys/queue.h> 58 #include <sys/systm.h> 59 #include <sys/socket.h> 60 #include <sys/kernel.h> 61 #include <sys/bus.h> 62 #include <sys/module.h> 63 #include <sys/lock.h> 64 #include <sys/mutex.h> 65 #include <sys/condvar.h> 66 #include <sys/sysctl.h> 67 #include <sys/sx.h> 68 #include <sys/unistd.h> 69 #include <sys/callout.h> 70 #include <sys/malloc.h> 71 #include <sys/priv.h> 72 73 #include <net/if.h> 74 #include <net/if_var.h> 75 76 #include <dev/usb/usb.h> 77 #include <dev/usb/usbdi.h> 78 #include <dev/usb/usbdi_util.h> 79 #include <dev/usb/usb_cdc.h> 80 #include "usbdevs.h" 81 82 #define USB_DEBUG_VAR cdce_debug 83 #include <dev/usb/usb_debug.h> 84 #include <dev/usb/usb_process.h> 85 #include <dev/usb/usb_msctest.h> 86 #include "usb_if.h" 87 88 #include <dev/usb/net/usb_ethernet.h> 89 #include <dev/usb/net/if_cdcereg.h> 90 91 static device_probe_t cdce_probe; 92 static device_attach_t cdce_attach; 93 static device_detach_t cdce_detach; 94 static device_suspend_t cdce_suspend; 95 static device_resume_t cdce_resume; 96 static usb_handle_request_t cdce_handle_request; 97 98 static usb_callback_t cdce_bulk_write_callback; 99 static usb_callback_t cdce_bulk_read_callback; 100 static usb_callback_t cdce_intr_read_callback; 101 static usb_callback_t cdce_intr_write_callback; 102 103 #if CDCE_HAVE_NCM 104 static usb_callback_t cdce_ncm_bulk_write_callback; 105 static usb_callback_t cdce_ncm_bulk_read_callback; 106 #endif 107 108 static uether_fn_t cdce_attach_post; 109 static uether_fn_t cdce_init; 110 static uether_fn_t cdce_stop; 111 static uether_fn_t cdce_start; 112 static uether_fn_t cdce_setmulti; 113 static uether_fn_t cdce_setpromisc; 114 static int cdce_attach_post_sub(struct usb_ether *); 115 static int cdce_ioctl(struct ifnet *, u_long, caddr_t); 116 static int cdce_media_change_cb(struct ifnet *); 117 static void cdce_media_status_cb(struct ifnet *, struct ifmediareq *); 118 119 static uint32_t cdce_m_crc32(struct mbuf *, uint32_t, uint32_t); 120 static void cdce_set_filter(struct usb_ether *); 121 122 #ifdef USB_DEBUG 123 static int cdce_debug = 0; 124 static int cdce_tx_interval = 0; 125 126 static SYSCTL_NODE(_hw_usb, OID_AUTO, cdce, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 127 "USB CDC-Ethernet"); 128 SYSCTL_INT(_hw_usb_cdce, OID_AUTO, debug, CTLFLAG_RWTUN, &cdce_debug, 0, 129 "Debug level"); 130 SYSCTL_INT(_hw_usb_cdce, OID_AUTO, interval, CTLFLAG_RWTUN, &cdce_tx_interval, 0, 131 "NCM transmit interval in ms"); 132 #else 133 #define cdce_debug 0 134 #endif 135 136 static const struct usb_config cdce_config[CDCE_N_TRANSFER] = { 137 [CDCE_BULK_RX] = { 138 .type = UE_BULK, 139 .endpoint = UE_ADDR_ANY, 140 .direction = UE_DIR_RX, 141 .if_index = 0, 142 .frames = CDCE_FRAMES_MAX, 143 .bufsize = (CDCE_FRAMES_MAX * MCLBYTES), 144 .flags = {.pipe_bof = 1,.short_frames_ok = 1,.short_xfer_ok = 1,.ext_buffer = 1,}, 145 .callback = cdce_bulk_read_callback, 146 .timeout = 0, /* no timeout */ 147 .usb_mode = USB_MODE_DUAL, /* both modes */ 148 }, 149 150 [CDCE_BULK_TX] = { 151 .type = UE_BULK, 152 .endpoint = UE_ADDR_ANY, 153 .direction = UE_DIR_TX, 154 .if_index = 0, 155 .frames = CDCE_FRAMES_MAX, 156 .bufsize = (CDCE_FRAMES_MAX * MCLBYTES), 157 .flags = {.pipe_bof = 1,.force_short_xfer = 1,.ext_buffer = 1,}, 158 .callback = cdce_bulk_write_callback, 159 .timeout = 10000, /* 10 seconds */ 160 .usb_mode = USB_MODE_DUAL, /* both modes */ 161 }, 162 163 [CDCE_INTR_RX] = { 164 .type = UE_INTERRUPT, 165 .endpoint = UE_ADDR_ANY, 166 .direction = UE_DIR_RX, 167 .if_index = 1, 168 .bufsize = CDCE_IND_SIZE_MAX, 169 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.no_pipe_ok = 1,}, 170 .callback = cdce_intr_read_callback, 171 .timeout = 0, 172 .usb_mode = USB_MODE_HOST, 173 }, 174 175 [CDCE_INTR_TX] = { 176 .type = UE_INTERRUPT, 177 .endpoint = UE_ADDR_ANY, 178 .direction = UE_DIR_TX, 179 .if_index = 1, 180 .bufsize = CDCE_IND_SIZE_MAX, 181 .flags = {.pipe_bof = 1,.force_short_xfer = 1,.no_pipe_ok = 1,}, 182 .callback = cdce_intr_write_callback, 183 .timeout = 10000, /* 10 seconds */ 184 .usb_mode = USB_MODE_DEVICE, 185 }, 186 }; 187 188 #if CDCE_HAVE_NCM 189 static const struct usb_config cdce_ncm_config[CDCE_N_TRANSFER] = { 190 [CDCE_BULK_RX] = { 191 .type = UE_BULK, 192 .endpoint = UE_ADDR_ANY, 193 .direction = UE_DIR_RX, 194 .if_index = 0, 195 .frames = CDCE_NCM_RX_FRAMES_MAX, 196 .bufsize = (CDCE_NCM_RX_FRAMES_MAX * CDCE_NCM_RX_MAXLEN), 197 .flags = {.pipe_bof = 1,.short_frames_ok = 1,.short_xfer_ok = 1,}, 198 .callback = cdce_ncm_bulk_read_callback, 199 .timeout = 0, /* no timeout */ 200 .usb_mode = USB_MODE_DUAL, /* both modes */ 201 }, 202 203 [CDCE_BULK_TX] = { 204 .type = UE_BULK, 205 .endpoint = UE_ADDR_ANY, 206 .direction = UE_DIR_TX, 207 .if_index = 0, 208 .frames = CDCE_NCM_TX_FRAMES_MAX, 209 .bufsize = (CDCE_NCM_TX_FRAMES_MAX * CDCE_NCM_TX_MAXLEN), 210 .flags = {.pipe_bof = 1,}, 211 .callback = cdce_ncm_bulk_write_callback, 212 .timeout = 10000, /* 10 seconds */ 213 .usb_mode = USB_MODE_DUAL, /* both modes */ 214 }, 215 216 [CDCE_INTR_RX] = { 217 .type = UE_INTERRUPT, 218 .endpoint = UE_ADDR_ANY, 219 .direction = UE_DIR_RX, 220 .if_index = 1, 221 .bufsize = CDCE_IND_SIZE_MAX, 222 .flags = {.pipe_bof = 1,.short_xfer_ok = 1,.no_pipe_ok = 1,}, 223 .callback = cdce_intr_read_callback, 224 .timeout = 0, 225 .usb_mode = USB_MODE_HOST, 226 }, 227 228 [CDCE_INTR_TX] = { 229 .type = UE_INTERRUPT, 230 .endpoint = UE_ADDR_ANY, 231 .direction = UE_DIR_TX, 232 .if_index = 1, 233 .bufsize = CDCE_IND_SIZE_MAX, 234 .flags = {.pipe_bof = 1,.force_short_xfer = 1,.no_pipe_ok = 1,}, 235 .callback = cdce_intr_write_callback, 236 .timeout = 10000, /* 10 seconds */ 237 .usb_mode = USB_MODE_DEVICE, 238 }, 239 }; 240 #endif 241 242 static device_method_t cdce_methods[] = { 243 /* USB interface */ 244 DEVMETHOD(usb_handle_request, cdce_handle_request), 245 246 /* Device interface */ 247 DEVMETHOD(device_probe, cdce_probe), 248 DEVMETHOD(device_attach, cdce_attach), 249 DEVMETHOD(device_detach, cdce_detach), 250 DEVMETHOD(device_suspend, cdce_suspend), 251 DEVMETHOD(device_resume, cdce_resume), 252 253 DEVMETHOD_END 254 }; 255 256 static driver_t cdce_driver = { 257 .name = "cdce", 258 .methods = cdce_methods, 259 .size = sizeof(struct cdce_softc), 260 }; 261 262 static eventhandler_tag cdce_etag; 263 264 static int cdce_driver_loaded(struct module *, int, void *); 265 266 static const STRUCT_USB_HOST_ID cdce_switch_devs[] = { 267 {USB_VPI(USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E3272_INIT, MSC_EJECT_HUAWEI2)}, 268 {USB_VPI(USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E3372v153_INIT, MSC_EJECT_HUAWEI2)}, 269 {USB_VPI(USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E3372_INIT, MSC_EJECT_HUAWEI4)}, 270 {USB_VPI(USB_VENDOR_HUAWEI, USB_PRODUCT_HUAWEI_E5573Cs322_ECM, MSC_EJECT_HUAWEI3)}, 271 }; 272 273 static const STRUCT_USB_HOST_ID cdce_host_devs[] = { 274 {USB_VPI(USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632, CDCE_FLAG_NO_UNION)}, 275 {USB_VPI(USB_VENDOR_AMBIT, USB_PRODUCT_AMBIT_NTL_250, CDCE_FLAG_NO_UNION)}, 276 {USB_VPI(USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX, CDCE_FLAG_NO_UNION)}, 277 {USB_VPI(USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00, CDCE_FLAG_NO_UNION)}, 278 {USB_VPI(USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)}, 279 {USB_VPI(USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)}, 280 {USB_VPI(USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501, CDCE_FLAG_NO_UNION)}, 281 {USB_VPI(USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500, CDCE_FLAG_ZAURUS)}, 282 {USB_VPI(USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)}, 283 {USB_VPI(USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLA300, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)}, 284 {USB_VPI(USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC700, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)}, 285 {USB_VPI(USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC750, CDCE_FLAG_ZAURUS | CDCE_FLAG_NO_UNION)}, 286 {USB_VPI(USB_VENDOR_REALTEK, USB_PRODUCT_REALTEK_RTL8156, 0)}, 287 288 {USB_VENDOR(USB_VENDOR_HUAWEI), USB_IFACE_CLASS(UICLASS_VENDOR), 289 USB_IFACE_SUBCLASS(0x02), USB_IFACE_PROTOCOL(0x16), 290 USB_DRIVER_INFO(0)}, 291 {USB_VENDOR(USB_VENDOR_HUAWEI), USB_IFACE_CLASS(UICLASS_VENDOR), 292 USB_IFACE_SUBCLASS(0x02), USB_IFACE_PROTOCOL(0x46), 293 USB_DRIVER_INFO(0)}, 294 {USB_VENDOR(USB_VENDOR_HUAWEI), USB_IFACE_CLASS(UICLASS_VENDOR), 295 USB_IFACE_SUBCLASS(0x02), USB_IFACE_PROTOCOL(0x76), 296 USB_DRIVER_INFO(0)}, 297 {USB_VENDOR(USB_VENDOR_HUAWEI), USB_IFACE_CLASS(UICLASS_VENDOR), 298 USB_IFACE_SUBCLASS(0x03), USB_IFACE_PROTOCOL(0x16), 299 USB_DRIVER_INFO(0)}, 300 }; 301 302 static const STRUCT_USB_DUAL_ID cdce_dual_devs[] = { 303 {USB_IF_CSI(UICLASS_CDC, UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL, 0)}, 304 {USB_IF_CSI(UICLASS_CDC, UISUBCLASS_MOBILE_DIRECT_LINE_MODEL, 0)}, 305 {USB_IF_CSI(UICLASS_CDC, UISUBCLASS_NETWORK_CONTROL_MODEL, 0)}, 306 }; 307 308 DRIVER_MODULE(cdce, uhub, cdce_driver, cdce_driver_loaded, NULL); 309 MODULE_VERSION(cdce, 1); 310 MODULE_DEPEND(cdce, uether, 1, 1, 1); 311 MODULE_DEPEND(cdce, usb, 1, 1, 1); 312 MODULE_DEPEND(cdce, ether, 1, 1, 1); 313 USB_PNP_DEVICE_INFO(cdce_switch_devs); 314 USB_PNP_HOST_INFO(cdce_host_devs); 315 USB_PNP_DUAL_INFO(cdce_dual_devs); 316 317 static const struct usb_ether_methods cdce_ue_methods = { 318 .ue_attach_post = cdce_attach_post, 319 .ue_attach_post_sub = cdce_attach_post_sub, 320 .ue_start = cdce_start, 321 .ue_init = cdce_init, 322 .ue_stop = cdce_stop, 323 .ue_setmulti = cdce_setmulti, 324 .ue_setpromisc = cdce_setpromisc, 325 }; 326 327 #if CDCE_HAVE_NCM 328 /*------------------------------------------------------------------------* 329 * cdce_ncm_init 330 * 331 * Return values: 332 * 0: Success 333 * Else: Failure 334 *------------------------------------------------------------------------*/ 335 static uint8_t 336 cdce_ncm_init(struct cdce_softc *sc) 337 { 338 struct usb_ncm_parameters temp; 339 struct usb_device_request req; 340 struct usb_ncm_func_descriptor *ufd; 341 uint8_t value[8]; 342 int err; 343 344 ufd = usbd_find_descriptor(sc->sc_ue.ue_udev, NULL, 345 sc->sc_ifaces_index[1], UDESC_CS_INTERFACE, 0xFF, 346 UCDC_NCM_FUNC_DESC_SUBTYPE, 0xFF); 347 348 /* verify length of NCM functional descriptor */ 349 if (ufd != NULL) { 350 if (ufd->bLength < sizeof(*ufd)) 351 ufd = NULL; 352 else 353 DPRINTFN(1, "Found NCM functional descriptor.\n"); 354 } 355 356 req.bmRequestType = UT_READ_CLASS_INTERFACE; 357 req.bRequest = UCDC_NCM_GET_NTB_PARAMETERS; 358 USETW(req.wValue, 0); 359 req.wIndex[0] = sc->sc_ifaces_index[1]; 360 req.wIndex[1] = 0; 361 USETW(req.wLength, sizeof(temp)); 362 363 err = usbd_do_request_flags(sc->sc_ue.ue_udev, NULL, &req, 364 &temp, 0, NULL, 1000 /* ms */); 365 if (err) 366 return (1); 367 368 /* Read correct set of parameters according to device mode */ 369 370 if (usbd_get_mode(sc->sc_ue.ue_udev) == USB_MODE_HOST) { 371 sc->sc_ncm.rx_max = UGETDW(temp.dwNtbInMaxSize); 372 sc->sc_ncm.tx_max = UGETDW(temp.dwNtbOutMaxSize); 373 sc->sc_ncm.tx_remainder = UGETW(temp.wNdpOutPayloadRemainder); 374 sc->sc_ncm.tx_modulus = UGETW(temp.wNdpOutDivisor); 375 sc->sc_ncm.tx_struct_align = UGETW(temp.wNdpOutAlignment); 376 sc->sc_ncm.tx_nframe = UGETW(temp.wNtbOutMaxDatagrams); 377 } else { 378 sc->sc_ncm.rx_max = UGETDW(temp.dwNtbOutMaxSize); 379 sc->sc_ncm.tx_max = UGETDW(temp.dwNtbInMaxSize); 380 sc->sc_ncm.tx_remainder = UGETW(temp.wNdpInPayloadRemainder); 381 sc->sc_ncm.tx_modulus = UGETW(temp.wNdpInDivisor); 382 sc->sc_ncm.tx_struct_align = UGETW(temp.wNdpInAlignment); 383 sc->sc_ncm.tx_nframe = UGETW(temp.wNtbOutMaxDatagrams); 384 } 385 386 /* Verify maximum receive length */ 387 388 if ((sc->sc_ncm.rx_max < 32) || 389 (sc->sc_ncm.rx_max > CDCE_NCM_RX_MAXLEN)) { 390 DPRINTFN(1, "Using default maximum receive length\n"); 391 sc->sc_ncm.rx_max = CDCE_NCM_RX_MAXLEN; 392 } 393 394 /* Verify maximum transmit length */ 395 396 if ((sc->sc_ncm.tx_max < 32) || 397 (sc->sc_ncm.tx_max > CDCE_NCM_TX_MAXLEN)) { 398 DPRINTFN(1, "Using default maximum transmit length\n"); 399 sc->sc_ncm.tx_max = CDCE_NCM_TX_MAXLEN; 400 } 401 402 /* 403 * Verify that the structure alignment is: 404 * - power of two 405 * - not greater than the maximum transmit length 406 * - not less than four bytes 407 */ 408 if ((sc->sc_ncm.tx_struct_align < 4) || 409 (sc->sc_ncm.tx_struct_align != 410 ((-sc->sc_ncm.tx_struct_align) & sc->sc_ncm.tx_struct_align)) || 411 (sc->sc_ncm.tx_struct_align >= sc->sc_ncm.tx_max)) { 412 DPRINTFN(1, "Using default other alignment: 4 bytes\n"); 413 sc->sc_ncm.tx_struct_align = 4; 414 } 415 416 /* 417 * Verify that the payload alignment is: 418 * - power of two 419 * - not greater than the maximum transmit length 420 * - not less than four bytes 421 */ 422 if ((sc->sc_ncm.tx_modulus < 4) || 423 (sc->sc_ncm.tx_modulus != 424 ((-sc->sc_ncm.tx_modulus) & sc->sc_ncm.tx_modulus)) || 425 (sc->sc_ncm.tx_modulus >= sc->sc_ncm.tx_max)) { 426 DPRINTFN(1, "Using default transmit modulus: 4 bytes\n"); 427 sc->sc_ncm.tx_modulus = 4; 428 } 429 430 /* Verify that the payload remainder */ 431 432 if ((sc->sc_ncm.tx_remainder >= sc->sc_ncm.tx_modulus)) { 433 DPRINTFN(1, "Using default transmit remainder: 0 bytes\n"); 434 sc->sc_ncm.tx_remainder = 0; 435 } 436 437 /* 438 * Offset the TX remainder so that IP packet payload starts at 439 * the tx_modulus. This is not too clear in the specification. 440 */ 441 442 sc->sc_ncm.tx_remainder = 443 (sc->sc_ncm.tx_remainder - ETHER_HDR_LEN) & 444 (sc->sc_ncm.tx_modulus - 1); 445 446 /* Verify max datagrams */ 447 448 if (sc->sc_ncm.tx_nframe == 0 || 449 sc->sc_ncm.tx_nframe > (CDCE_NCM_SUBFRAMES_MAX - 1)) { 450 DPRINTFN(1, "Using default max " 451 "subframes: %u units\n", CDCE_NCM_SUBFRAMES_MAX - 1); 452 /* need to reserve one entry for zero padding */ 453 sc->sc_ncm.tx_nframe = (CDCE_NCM_SUBFRAMES_MAX - 1); 454 } 455 456 /* Additional configuration, will fail in device side mode, which is OK. */ 457 458 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 459 req.bRequest = UCDC_NCM_SET_NTB_INPUT_SIZE; 460 USETW(req.wValue, 0); 461 req.wIndex[0] = sc->sc_ifaces_index[1]; 462 req.wIndex[1] = 0; 463 464 if (ufd != NULL && 465 (ufd->bmNetworkCapabilities & UCDC_NCM_CAP_MAX_DGRAM)) { 466 USETW(req.wLength, 8); 467 USETDW(value, sc->sc_ncm.rx_max); 468 USETW(value + 4, (CDCE_NCM_SUBFRAMES_MAX - 1)); 469 USETW(value + 6, 0); 470 } else { 471 USETW(req.wLength, 4); 472 USETDW(value, sc->sc_ncm.rx_max); 473 } 474 475 err = usbd_do_request_flags(sc->sc_ue.ue_udev, NULL, &req, 476 &value, 0, NULL, 1000 /* ms */); 477 if (err) { 478 DPRINTFN(1, "Setting input size " 479 "to %u failed.\n", sc->sc_ncm.rx_max); 480 } 481 482 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 483 req.bRequest = UCDC_NCM_SET_CRC_MODE; 484 USETW(req.wValue, 0); /* no CRC */ 485 req.wIndex[0] = sc->sc_ifaces_index[1]; 486 req.wIndex[1] = 0; 487 USETW(req.wLength, 0); 488 489 err = usbd_do_request_flags(sc->sc_ue.ue_udev, NULL, &req, 490 NULL, 0, NULL, 1000 /* ms */); 491 if (err) { 492 DPRINTFN(1, "Setting CRC mode to off failed.\n"); 493 } 494 495 req.bmRequestType = UT_WRITE_CLASS_INTERFACE; 496 req.bRequest = UCDC_NCM_SET_NTB_FORMAT; 497 USETW(req.wValue, 0); /* NTB-16 */ 498 req.wIndex[0] = sc->sc_ifaces_index[1]; 499 req.wIndex[1] = 0; 500 USETW(req.wLength, 0); 501 502 err = usbd_do_request_flags(sc->sc_ue.ue_udev, NULL, &req, 503 NULL, 0, NULL, 1000 /* ms */); 504 if (err) { 505 DPRINTFN(1, "Setting NTB format to 16-bit failed.\n"); 506 } 507 508 return (0); /* success */ 509 } 510 #endif 511 512 static void 513 cdce_test_autoinst(void *arg, struct usb_device *udev, 514 struct usb_attach_arg *uaa) 515 { 516 struct usb_interface *iface; 517 struct usb_interface_descriptor *id; 518 519 if (uaa->dev_state != UAA_DEV_READY) 520 return; 521 522 iface = usbd_get_iface(udev, 0); 523 if (iface == NULL) 524 return; 525 id = iface->idesc; 526 if (id == NULL || id->bInterfaceClass != UICLASS_MASS) 527 return; 528 if (usbd_lookup_id_by_uaa(cdce_switch_devs, sizeof(cdce_switch_devs), uaa)) 529 return; /* no device match */ 530 531 if (usb_msc_eject(udev, 0, USB_GET_DRIVER_INFO(uaa)) == 0) { 532 /* success, mark the udev as disappearing */ 533 uaa->dev_state = UAA_DEV_EJECTING; 534 } 535 } 536 537 static int 538 cdce_driver_loaded(struct module *mod, int what, void *arg) 539 { 540 switch (what) { 541 case MOD_LOAD: 542 /* register our autoinstall handler */ 543 cdce_etag = EVENTHANDLER_REGISTER(usb_dev_configured, 544 cdce_test_autoinst, NULL, EVENTHANDLER_PRI_ANY); 545 return (0); 546 case MOD_UNLOAD: 547 EVENTHANDLER_DEREGISTER(usb_dev_configured, cdce_etag); 548 return (0); 549 default: 550 return (EOPNOTSUPP); 551 } 552 } 553 554 static int 555 cdce_probe(device_t dev) 556 { 557 struct usb_attach_arg *uaa = device_get_ivars(dev); 558 int error; 559 560 error = usbd_lookup_id_by_uaa(cdce_host_devs, sizeof(cdce_host_devs), uaa); 561 if (error) 562 error = usbd_lookup_id_by_uaa(cdce_dual_devs, sizeof(cdce_dual_devs), uaa); 563 return (error); 564 } 565 566 static void 567 cdce_attach_post(struct usb_ether *ue) 568 { 569 /* no-op */ 570 return; 571 } 572 573 static int 574 cdce_attach_post_sub(struct usb_ether *ue) 575 { 576 struct cdce_softc *sc = uether_getsc(ue); 577 struct ifnet *ifp = uether_getifp(ue); 578 579 /* mostly copied from usb_ethernet.c */ 580 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; 581 ifp->if_start = uether_start; 582 ifp->if_ioctl = cdce_ioctl; 583 ifp->if_init = uether_init; 584 IFQ_SET_MAXLEN(&ifp->if_snd, ifqmaxlen); 585 ifp->if_snd.ifq_drv_maxlen = ifqmaxlen; 586 IFQ_SET_READY(&ifp->if_snd); 587 588 if ((sc->sc_flags & CDCE_FLAG_VLAN) == CDCE_FLAG_VLAN) 589 if_setcapabilitiesbit(ifp, IFCAP_VLAN_MTU, 0); 590 591 if_setcapabilitiesbit(ifp, IFCAP_LINKSTATE, 0); 592 if_setcapenable(ifp, if_getcapabilities(ifp)); 593 594 ifmedia_init(&sc->sc_media, IFM_IMASK, cdce_media_change_cb, 595 cdce_media_status_cb); 596 ifmedia_add(&sc->sc_media, IFM_ETHER | IFM_AUTO, 0, NULL); 597 ifmedia_set(&sc->sc_media, IFM_ETHER | IFM_AUTO); 598 sc->sc_media.ifm_media = sc->sc_media.ifm_cur->ifm_media; 599 CDCE_LOCK(sc); 600 cdce_set_filter(ue); 601 CDCE_UNLOCK(sc); 602 603 return 0; 604 } 605 606 static int 607 cdce_attach(device_t dev) 608 { 609 struct cdce_softc *sc = device_get_softc(dev); 610 struct usb_ether *ue = &sc->sc_ue; 611 struct usb_attach_arg *uaa = device_get_ivars(dev); 612 struct usb_interface *iface; 613 const struct usb_cdc_union_descriptor *ud; 614 const struct usb_interface_descriptor *id; 615 const struct usb_cdc_ethernet_descriptor *ued; 616 const struct usb_config *pcfg; 617 uint32_t seed; 618 int error; 619 uint8_t i; 620 uint8_t data_iface_no; 621 char eaddr_str[5 * ETHER_ADDR_LEN]; /* approx */ 622 623 sc->sc_flags = USB_GET_DRIVER_INFO(uaa); 624 sc->sc_ue.ue_udev = uaa->device; 625 626 device_set_usb_desc(dev); 627 628 mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); 629 630 ud = usbd_find_descriptor 631 (uaa->device, NULL, uaa->info.bIfaceIndex, 632 UDESC_CS_INTERFACE, 0xFF, UDESCSUB_CDC_UNION, 0xFF); 633 634 if ((ud == NULL) || (ud->bLength < sizeof(*ud)) || 635 (sc->sc_flags & CDCE_FLAG_NO_UNION)) { 636 DPRINTFN(1, "No union descriptor!\n"); 637 sc->sc_ifaces_index[0] = uaa->info.bIfaceIndex; 638 sc->sc_ifaces_index[1] = uaa->info.bIfaceIndex; 639 goto alloc_transfers; 640 } 641 data_iface_no = ud->bSlaveInterface[0]; 642 643 for (i = 0;; i++) { 644 iface = usbd_get_iface(uaa->device, i); 645 646 if (iface) { 647 id = usbd_get_interface_descriptor(iface); 648 649 if (id && (id->bInterfaceNumber == data_iface_no)) { 650 sc->sc_ifaces_index[0] = i; 651 sc->sc_ifaces_index[1] = uaa->info.bIfaceIndex; 652 usbd_set_parent_iface(uaa->device, i, uaa->info.bIfaceIndex); 653 break; 654 } 655 } else { 656 device_printf(dev, "no data interface found\n"); 657 goto detach; 658 } 659 } 660 661 /* 662 * <quote> 663 * 664 * The Data Class interface of a networking device shall have 665 * a minimum of two interface settings. The first setting 666 * (the default interface setting) includes no endpoints and 667 * therefore no networking traffic is exchanged whenever the 668 * default interface setting is selected. One or more 669 * additional interface settings are used for normal 670 * operation, and therefore each includes a pair of endpoints 671 * (one IN, and one OUT) to exchange network traffic. Select 672 * an alternate interface setting to initialize the network 673 * aspects of the device and to enable the exchange of 674 * network traffic. 675 * 676 * </quote> 677 * 678 * Some devices, most notably cable modems, include interface 679 * settings that have no IN or OUT endpoint, therefore loop 680 * through the list of all available interface settings 681 * looking for one with both IN and OUT endpoints. 682 */ 683 684 alloc_transfers: 685 686 pcfg = cdce_config; /* Default Configuration */ 687 688 for (i = 0; i != 32; i++) { 689 error = usbd_set_alt_interface_index(uaa->device, 690 sc->sc_ifaces_index[0], i); 691 if (error) 692 break; 693 #if CDCE_HAVE_NCM 694 if ((i == 0) && (cdce_ncm_init(sc) == 0)) 695 pcfg = cdce_ncm_config; 696 #endif 697 error = usbd_transfer_setup(uaa->device, 698 sc->sc_ifaces_index, sc->sc_xfer, 699 pcfg, CDCE_N_TRANSFER, sc, &sc->sc_mtx); 700 701 if (error == 0) 702 break; 703 } 704 705 if (error || (i == 32)) { 706 device_printf(dev, "No valid alternate " 707 "setting found\n"); 708 goto detach; 709 } 710 711 ued = usbd_find_descriptor 712 (uaa->device, NULL, uaa->info.bIfaceIndex, 713 UDESC_CS_INTERFACE, 0xFF, UDESCSUB_CDC_ENF, 0xFF); 714 715 if ((ued == NULL) || (ued->bLength < sizeof(*ued))) { 716 error = USB_ERR_INVAL; 717 } else { 718 /* 719 * ECM 1.2 doesn't say it excludes the CRC, but states that it's 720 * normally 1514, which excludes the CRC. 721 */ 722 DPRINTF("max segsize: %d\n", UGETW(ued->wMaxSegmentSize)); 723 if (UGETW(ued->wMaxSegmentSize) >= (ETHER_MAX_LEN - ETHER_CRC_LEN + ETHER_VLAN_ENCAP_LEN)) 724 sc->sc_flags |= CDCE_FLAG_VLAN; 725 726 error = usbd_req_get_string_any(uaa->device, NULL, 727 eaddr_str, sizeof(eaddr_str), ued->iMacAddress); 728 } 729 730 if (error) { 731 /* fake MAC address */ 732 733 device_printf(dev, "faking MAC address\n"); 734 seed = ticks; 735 sc->sc_ue.ue_eaddr[0] = 0x2a; 736 memcpy(&sc->sc_ue.ue_eaddr[1], &seed, sizeof(uint32_t)); 737 sc->sc_ue.ue_eaddr[5] = device_get_unit(dev); 738 739 } else { 740 memset(sc->sc_ue.ue_eaddr, 0, sizeof(sc->sc_ue.ue_eaddr)); 741 742 for (i = 0; i != (ETHER_ADDR_LEN * 2); i++) { 743 char c = eaddr_str[i]; 744 745 if ('0' <= c && c <= '9') 746 c -= '0'; 747 else if (c != 0) 748 c -= 'A' - 10; 749 else 750 break; 751 752 c &= 0xf; 753 754 if ((i & 1) == 0) 755 c <<= 4; 756 sc->sc_ue.ue_eaddr[i / 2] |= c; 757 } 758 759 if (uaa->usb_mode == USB_MODE_DEVICE) { 760 /* 761 * Do not use the same MAC address like the peer ! 762 */ 763 sc->sc_ue.ue_eaddr[5] ^= 0xFF; 764 } 765 } 766 767 ue->ue_sc = sc; 768 ue->ue_dev = dev; 769 ue->ue_udev = uaa->device; 770 ue->ue_mtx = &sc->sc_mtx; 771 ue->ue_methods = &cdce_ue_methods; 772 773 error = uether_ifattach(ue); 774 if (error) { 775 device_printf(dev, "could not attach interface\n"); 776 goto detach; 777 } 778 return (0); /* success */ 779 780 detach: 781 cdce_detach(dev); 782 return (ENXIO); /* failure */ 783 } 784 785 static int 786 cdce_detach(device_t dev) 787 { 788 struct cdce_softc *sc = device_get_softc(dev); 789 struct usb_ether *ue = &sc->sc_ue; 790 791 /* stop all USB transfers first */ 792 usbd_transfer_unsetup(sc->sc_xfer, CDCE_N_TRANSFER); 793 uether_ifdetach(ue); 794 mtx_destroy(&sc->sc_mtx); 795 796 ifmedia_removeall(&sc->sc_media); 797 798 return (0); 799 } 800 801 static void 802 cdce_start(struct usb_ether *ue) 803 { 804 struct cdce_softc *sc = uether_getsc(ue); 805 806 /* 807 * Start the USB transfers, if not already started: 808 */ 809 usbd_transfer_start(sc->sc_xfer[CDCE_BULK_TX]); 810 usbd_transfer_start(sc->sc_xfer[CDCE_BULK_RX]); 811 } 812 813 static int 814 cdce_ioctl(struct ifnet *ifp, u_long command, caddr_t data) 815 { 816 struct usb_ether *ue = ifp->if_softc; 817 struct cdce_softc *sc = uether_getsc(ue); 818 struct ifreq *ifr = (struct ifreq *)data; 819 int error; 820 821 error = 0; 822 823 switch(command) { 824 case SIOCGIFMEDIA: 825 case SIOCSIFMEDIA: 826 error = ifmedia_ioctl(ifp, ifr, &sc->sc_media, command); 827 break; 828 default: 829 error = uether_ioctl(ifp, command, data); 830 break; 831 } 832 833 return (error); 834 } 835 836 static void 837 cdce_free_queue(struct mbuf **ppm, uint8_t n) 838 { 839 uint8_t x; 840 for (x = 0; x != n; x++) { 841 if (ppm[x] != NULL) { 842 m_freem(ppm[x]); 843 ppm[x] = NULL; 844 } 845 } 846 } 847 848 static int 849 cdce_media_change_cb(struct ifnet *ifp) 850 { 851 852 return (EOPNOTSUPP); 853 } 854 855 static void 856 cdce_media_status_cb(struct ifnet *ifp, struct ifmediareq *ifmr) 857 { 858 859 if ((if_getflags(ifp) & IFF_UP) == 0) 860 return; 861 862 ifmr->ifm_active = IFM_ETHER; 863 ifmr->ifm_status = IFM_AVALID; 864 ifmr->ifm_status |= 865 ifp->if_link_state == LINK_STATE_UP ? IFM_ACTIVE : 0; 866 } 867 868 static void 869 cdce_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 870 { 871 struct cdce_softc *sc = usbd_xfer_softc(xfer); 872 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 873 struct mbuf *m; 874 struct mbuf *mt; 875 uint32_t crc; 876 uint8_t x; 877 int actlen, aframes; 878 879 usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL); 880 881 DPRINTFN(1, "\n"); 882 883 switch (USB_GET_STATE(xfer)) { 884 case USB_ST_TRANSFERRED: 885 DPRINTFN(11, "transfer complete: %u bytes in %u frames\n", 886 actlen, aframes); 887 888 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 889 890 /* free all previous TX buffers */ 891 cdce_free_queue(sc->sc_tx_buf, CDCE_FRAMES_MAX); 892 893 /* FALLTHROUGH */ 894 case USB_ST_SETUP: 895 tr_setup: 896 for (x = 0; x != CDCE_FRAMES_MAX; x++) { 897 IFQ_DRV_DEQUEUE(&ifp->if_snd, m); 898 899 if (m == NULL) 900 break; 901 902 if (sc->sc_flags & CDCE_FLAG_ZAURUS) { 903 /* 904 * Zaurus wants a 32-bit CRC appended 905 * to every frame 906 */ 907 908 crc = cdce_m_crc32(m, 0, m->m_pkthdr.len); 909 crc = htole32(crc); 910 911 if (!m_append(m, 4, (void *)&crc)) { 912 m_freem(m); 913 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 914 continue; 915 } 916 } 917 if (m->m_len != m->m_pkthdr.len) { 918 mt = m_defrag(m, M_NOWAIT); 919 if (mt == NULL) { 920 m_freem(m); 921 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 922 continue; 923 } 924 m = mt; 925 } 926 if (m->m_pkthdr.len > MCLBYTES) { 927 m->m_pkthdr.len = MCLBYTES; 928 } 929 sc->sc_tx_buf[x] = m; 930 usbd_xfer_set_frame_data(xfer, x, m->m_data, m->m_len); 931 932 /* 933 * If there's a BPF listener, bounce a copy of 934 * this frame to him: 935 */ 936 BPF_MTAP(ifp, m); 937 } 938 if (x != 0) { 939 usbd_xfer_set_frames(xfer, x); 940 941 usbd_transfer_submit(xfer); 942 } 943 break; 944 945 default: /* Error */ 946 DPRINTFN(11, "transfer error, %s\n", 947 usbd_errstr(error)); 948 949 /* free all previous TX buffers */ 950 cdce_free_queue(sc->sc_tx_buf, CDCE_FRAMES_MAX); 951 952 /* count output errors */ 953 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 954 955 if (error != USB_ERR_CANCELLED) { 956 if (usbd_get_mode(sc->sc_ue.ue_udev) == USB_MODE_HOST) { 957 /* try to clear stall first */ 958 usbd_xfer_set_stall(xfer); 959 } 960 goto tr_setup; 961 } 962 break; 963 } 964 } 965 966 static int32_t 967 cdce_m_crc32_cb(void *arg, void *src, uint32_t count) 968 { 969 uint32_t *p_crc = arg; 970 971 *p_crc = crc32_raw(src, count, *p_crc); 972 return (0); 973 } 974 975 static uint32_t 976 cdce_m_crc32(struct mbuf *m, uint32_t src_offset, uint32_t src_len) 977 { 978 uint32_t crc = 0xFFFFFFFF; 979 980 (void)m_apply(m, src_offset, src_len, cdce_m_crc32_cb, &crc); 981 return (crc ^ 0xFFFFFFFF); 982 } 983 984 static void 985 cdce_init(struct usb_ether *ue) 986 { 987 struct cdce_softc *sc = uether_getsc(ue); 988 struct ifnet *ifp = uether_getifp(ue); 989 990 CDCE_LOCK_ASSERT(sc, MA_OWNED); 991 992 ifp->if_drv_flags |= IFF_DRV_RUNNING; 993 994 /* start interrupt transfer */ 995 usbd_transfer_start(sc->sc_xfer[CDCE_INTR_RX]); 996 usbd_transfer_start(sc->sc_xfer[CDCE_INTR_TX]); 997 998 /* 999 * Stall data write direction, which depends on USB mode. 1000 * 1001 * Some USB host stacks (e.g. Mac OS X) don't clears stall 1002 * bit as it should, so set it in our host mode only. 1003 */ 1004 if (usbd_get_mode(sc->sc_ue.ue_udev) == USB_MODE_HOST) 1005 usbd_xfer_set_stall(sc->sc_xfer[CDCE_BULK_TX]); 1006 1007 /* start data transfers */ 1008 cdce_start(ue); 1009 } 1010 1011 static void 1012 cdce_stop(struct usb_ether *ue) 1013 { 1014 struct cdce_softc *sc = uether_getsc(ue); 1015 struct ifnet *ifp = uether_getifp(ue); 1016 1017 CDCE_LOCK_ASSERT(sc, MA_OWNED); 1018 1019 ifp->if_drv_flags &= ~IFF_DRV_RUNNING; 1020 1021 /* 1022 * stop all the transfers, if not already stopped: 1023 */ 1024 usbd_transfer_stop(sc->sc_xfer[CDCE_BULK_RX]); 1025 usbd_transfer_stop(sc->sc_xfer[CDCE_BULK_TX]); 1026 usbd_transfer_stop(sc->sc_xfer[CDCE_INTR_RX]); 1027 usbd_transfer_stop(sc->sc_xfer[CDCE_INTR_TX]); 1028 } 1029 1030 static void 1031 cdce_setmulti(struct usb_ether *ue) 1032 { 1033 1034 cdce_set_filter(ue); 1035 } 1036 1037 static void 1038 cdce_setpromisc(struct usb_ether *ue) 1039 { 1040 1041 cdce_set_filter(ue); 1042 } 1043 1044 static void 1045 cdce_set_filter(struct usb_ether *ue) 1046 { 1047 struct cdce_softc *sc = uether_getsc(ue); 1048 struct ifnet *ifp = uether_getifp(ue); 1049 struct usb_device_request req; 1050 uint16_t value; 1051 1052 value = CDC_PACKET_TYPE_DIRECTED | CDC_PACKET_TYPE_BROADCAST; 1053 if (if_getflags(ifp) & IFF_PROMISC) 1054 value |= CDC_PACKET_TYPE_PROMISC; 1055 if (if_getflags(ifp) & IFF_ALLMULTI) 1056 value |= CDC_PACKET_TYPE_ALL_MULTICAST; 1057 1058 req.bmRequestType = UT_CLASS | UT_INTERFACE; 1059 req.bRequest = CDC_SET_ETHERNET_PACKET_FILTER; 1060 USETW(req.wValue, value); 1061 req.wIndex[0] = sc->sc_ifaces_index[1]; 1062 req.wIndex[1] = 0; 1063 USETW(req.wLength, 0); 1064 1065 /* 1066 * Function below will drop the sc mutex. 1067 * We can do that since we're called from a separate task, 1068 * that simply wraps the setpromisc/setmulti methods. 1069 */ 1070 usbd_do_request(sc->sc_ue.ue_udev, &sc->sc_mtx, &req, NULL); 1071 } 1072 1073 static int 1074 cdce_suspend(device_t dev) 1075 { 1076 device_printf(dev, "Suspending\n"); 1077 return (0); 1078 } 1079 1080 static int 1081 cdce_resume(device_t dev) 1082 { 1083 device_printf(dev, "Resuming\n"); 1084 return (0); 1085 } 1086 1087 static void 1088 cdce_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 1089 { 1090 struct cdce_softc *sc = usbd_xfer_softc(xfer); 1091 struct mbuf *m; 1092 uint8_t x; 1093 int actlen; 1094 int aframes; 1095 int len; 1096 1097 usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL); 1098 1099 switch (USB_GET_STATE(xfer)) { 1100 case USB_ST_TRANSFERRED: 1101 1102 DPRINTF("received %u bytes in %u frames\n", actlen, aframes); 1103 1104 for (x = 0; x != aframes; x++) { 1105 m = sc->sc_rx_buf[x]; 1106 sc->sc_rx_buf[x] = NULL; 1107 len = usbd_xfer_frame_len(xfer, x); 1108 1109 /* Strip off CRC added by Zaurus, if any */ 1110 if ((sc->sc_flags & CDCE_FLAG_ZAURUS) && len >= 14) 1111 len -= 4; 1112 1113 if (len < (int)sizeof(struct ether_header)) { 1114 m_freem(m); 1115 continue; 1116 } 1117 /* queue up mbuf */ 1118 uether_rxmbuf(&sc->sc_ue, m, len); 1119 } 1120 1121 /* FALLTHROUGH */ 1122 case USB_ST_SETUP: 1123 /* 1124 * TODO: Implement support for multi frame transfers, 1125 * when the USB hardware supports it. 1126 */ 1127 for (x = 0; x != 1; x++) { 1128 if (sc->sc_rx_buf[x] == NULL) { 1129 m = uether_newbuf(); 1130 if (m == NULL) 1131 goto tr_stall; 1132 sc->sc_rx_buf[x] = m; 1133 } else { 1134 m = sc->sc_rx_buf[x]; 1135 } 1136 1137 usbd_xfer_set_frame_data(xfer, x, m->m_data, m->m_len); 1138 } 1139 /* set number of frames and start hardware */ 1140 usbd_xfer_set_frames(xfer, x); 1141 usbd_transfer_submit(xfer); 1142 /* flush any received frames */ 1143 uether_rxflush(&sc->sc_ue); 1144 break; 1145 1146 default: /* Error */ 1147 DPRINTF("error = %s\n", 1148 usbd_errstr(error)); 1149 1150 if (error != USB_ERR_CANCELLED) { 1151 tr_stall: 1152 if (usbd_get_mode(sc->sc_ue.ue_udev) == USB_MODE_HOST) { 1153 /* try to clear stall first */ 1154 usbd_xfer_set_stall(xfer); 1155 usbd_xfer_set_frames(xfer, 0); 1156 usbd_transfer_submit(xfer); 1157 } 1158 break; 1159 } 1160 1161 /* need to free the RX-mbufs when we are cancelled */ 1162 cdce_free_queue(sc->sc_rx_buf, CDCE_FRAMES_MAX); 1163 break; 1164 } 1165 } 1166 1167 static void 1168 cdce_intr_read_callback(struct usb_xfer *xfer, usb_error_t error) 1169 { 1170 u_char buf[CDCE_IND_SIZE_MAX]; 1171 struct usb_cdc_notification ucn; 1172 struct cdce_softc *sc; 1173 struct ifnet *ifp; 1174 struct usb_page_cache *pc; 1175 int off, actlen; 1176 uint32_t downrate, uprate; 1177 1178 sc = usbd_xfer_softc(xfer); 1179 ifp = uether_getifp(&sc->sc_ue); 1180 pc = usbd_xfer_get_frame(xfer, 0); 1181 1182 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 1183 1184 switch (USB_GET_STATE(xfer)) { 1185 case USB_ST_TRANSFERRED: 1186 if (USB_DEBUG_VAR) 1187 usbd_copy_out(pc, 0, buf, MIN(actlen, sizeof buf)); 1188 DPRINTF("Received %d bytes: %*D\n", actlen, 1189 (int)MIN(actlen, sizeof buf), buf, ""); 1190 1191 off = 0; 1192 while (actlen - off >= UCDC_NOTIFICATION_LENGTH) { 1193 usbd_copy_out(pc, off, &ucn, UCDC_NOTIFICATION_LENGTH); 1194 1195 do { 1196 if (ucn.bmRequestType != 0xa1) 1197 break; 1198 1199 switch (ucn.bNotification) { 1200 case UCDC_N_NETWORK_CONNECTION: 1201 DPRINTF("changing link state: %d\n", 1202 UGETW(ucn.wValue)); 1203 if_link_state_change(ifp, 1204 UGETW(ucn.wValue) ? LINK_STATE_UP : 1205 LINK_STATE_DOWN); 1206 break; 1207 1208 case UCDC_N_CONNECTION_SPEED_CHANGE: 1209 if (UGETW(ucn.wLength) != 8) 1210 break; 1211 1212 usbd_copy_out(pc, off + 1213 UCDC_NOTIFICATION_LENGTH, 1214 &ucn.data, UGETW(ucn.wLength)); 1215 downrate = UGETDW(ucn.data); 1216 uprate = UGETDW(ucn.data); 1217 if (downrate != uprate) 1218 break; 1219 1220 /* set rate */ 1221 DPRINTF("changing baudrate: %u\n", 1222 downrate); 1223 if_setbaudrate(ifp, downrate); 1224 break; 1225 1226 default: 1227 break; 1228 } 1229 } while (0); 1230 1231 off += UCDC_NOTIFICATION_LENGTH + UGETW(ucn.wLength); 1232 } 1233 1234 /* FALLTHROUGH */ 1235 case USB_ST_SETUP: 1236 tr_setup: 1237 usbd_xfer_set_frame_len(xfer, 0, usbd_xfer_max_len(xfer)); 1238 usbd_transfer_submit(xfer); 1239 break; 1240 1241 default: /* Error */ 1242 if (error != USB_ERR_CANCELLED) { 1243 /* start clear stall */ 1244 if (usbd_get_mode(sc->sc_ue.ue_udev) == USB_MODE_HOST) 1245 usbd_xfer_set_stall(xfer); 1246 goto tr_setup; 1247 } 1248 break; 1249 } 1250 } 1251 1252 static void 1253 cdce_intr_write_callback(struct usb_xfer *xfer, usb_error_t error) 1254 { 1255 struct cdce_softc *sc = usbd_xfer_softc(xfer); 1256 struct usb_cdc_notification req; 1257 struct usb_page_cache *pc; 1258 uint32_t speed; 1259 int actlen; 1260 1261 usbd_xfer_status(xfer, &actlen, NULL, NULL, NULL); 1262 1263 switch (USB_GET_STATE(xfer)) { 1264 case USB_ST_TRANSFERRED: 1265 1266 DPRINTF("Transferred %d bytes\n", actlen); 1267 1268 switch (sc->sc_notify_state) { 1269 case CDCE_NOTIFY_NETWORK_CONNECTION: 1270 sc->sc_notify_state = CDCE_NOTIFY_SPEED_CHANGE; 1271 break; 1272 case CDCE_NOTIFY_SPEED_CHANGE: 1273 sc->sc_notify_state = CDCE_NOTIFY_DONE; 1274 break; 1275 default: 1276 break; 1277 } 1278 1279 /* FALLTHROUGH */ 1280 case USB_ST_SETUP: 1281 tr_setup: 1282 /* 1283 * Inform host about connection. Required according to USB CDC 1284 * specification and communicating to Mac OS X USB host stack. 1285 * Some of the values seems ignored by Mac OS X though. 1286 */ 1287 if (sc->sc_notify_state == CDCE_NOTIFY_NETWORK_CONNECTION) { 1288 req.bmRequestType = UCDC_NOTIFICATION; 1289 req.bNotification = UCDC_N_NETWORK_CONNECTION; 1290 req.wIndex[0] = sc->sc_ifaces_index[1]; 1291 req.wIndex[1] = 0; 1292 USETW(req.wValue, 1); /* Connected */ 1293 USETW(req.wLength, 0); 1294 1295 pc = usbd_xfer_get_frame(xfer, 0); 1296 usbd_copy_in(pc, 0, &req, sizeof(req)); 1297 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 1298 usbd_xfer_set_frames(xfer, 1); 1299 usbd_transfer_submit(xfer); 1300 1301 } else if (sc->sc_notify_state == CDCE_NOTIFY_SPEED_CHANGE) { 1302 req.bmRequestType = UCDC_NOTIFICATION; 1303 req.bNotification = UCDC_N_CONNECTION_SPEED_CHANGE; 1304 req.wIndex[0] = sc->sc_ifaces_index[1]; 1305 req.wIndex[1] = 0; 1306 USETW(req.wValue, 0); 1307 USETW(req.wLength, 8); 1308 1309 /* Peak theoretical bulk trasfer rate in bits/s */ 1310 if (usbd_get_speed(sc->sc_ue.ue_udev) != USB_SPEED_FULL) 1311 speed = (13 * 512 * 8 * 1000 * 8); 1312 else 1313 speed = (19 * 64 * 1 * 1000 * 8); 1314 1315 USETDW(req.data + 0, speed); /* Upstream bit rate */ 1316 USETDW(req.data + 4, speed); /* Downstream bit rate */ 1317 1318 pc = usbd_xfer_get_frame(xfer, 0); 1319 usbd_copy_in(pc, 0, &req, sizeof(req)); 1320 usbd_xfer_set_frame_len(xfer, 0, sizeof(req)); 1321 usbd_xfer_set_frames(xfer, 1); 1322 usbd_transfer_submit(xfer); 1323 } 1324 break; 1325 1326 default: /* Error */ 1327 if (error != USB_ERR_CANCELLED) { 1328 if (usbd_get_mode(sc->sc_ue.ue_udev) == USB_MODE_HOST) { 1329 /* start clear stall */ 1330 usbd_xfer_set_stall(xfer); 1331 } 1332 goto tr_setup; 1333 } 1334 break; 1335 } 1336 } 1337 1338 static int 1339 cdce_handle_request(device_t dev, 1340 const void *preq, void **pptr, uint16_t *plen, 1341 uint16_t offset, uint8_t *pstate) 1342 { 1343 struct cdce_softc *sc = device_get_softc(dev); 1344 const struct usb_device_request *req = preq; 1345 uint8_t is_complete = *pstate; 1346 1347 /* 1348 * When Mac OS X resumes after suspending it expects 1349 * to be notified again after this request. 1350 */ 1351 if (req->bmRequestType == UT_WRITE_CLASS_INTERFACE && \ 1352 req->bRequest == UCDC_NCM_SET_ETHERNET_PACKET_FILTER) { 1353 if (is_complete == 1) { 1354 mtx_lock(&sc->sc_mtx); 1355 sc->sc_notify_state = CDCE_NOTIFY_SPEED_CHANGE; 1356 usbd_transfer_start(sc->sc_xfer[CDCE_INTR_TX]); 1357 mtx_unlock(&sc->sc_mtx); 1358 } 1359 1360 return (0); 1361 } 1362 1363 return (ENXIO); /* use builtin handler */ 1364 } 1365 1366 #if CDCE_HAVE_NCM 1367 static void 1368 cdce_ncm_tx_zero(struct usb_page_cache *pc, 1369 uint32_t start, uint32_t end) 1370 { 1371 if (start >= CDCE_NCM_TX_MAXLEN) 1372 return; 1373 if (end > CDCE_NCM_TX_MAXLEN) 1374 end = CDCE_NCM_TX_MAXLEN; 1375 1376 usbd_frame_zero(pc, start, end - start); 1377 } 1378 1379 static uint8_t 1380 cdce_ncm_fill_tx_frames(struct usb_xfer *xfer, uint8_t index) 1381 { 1382 struct cdce_softc *sc = usbd_xfer_softc(xfer); 1383 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 1384 struct usb_page_cache *pc = usbd_xfer_get_frame(xfer, index); 1385 struct mbuf *m; 1386 uint32_t rem; 1387 uint32_t offset; 1388 uint32_t last_offset; 1389 uint16_t n; 1390 uint8_t retval; 1391 1392 usbd_xfer_set_frame_offset(xfer, index * CDCE_NCM_TX_MAXLEN, index); 1393 1394 offset = sizeof(sc->sc_ncm.hdr) + 1395 sizeof(sc->sc_ncm.dpt) + sizeof(sc->sc_ncm.dp); 1396 1397 /* Store last valid offset before alignment */ 1398 last_offset = offset; 1399 1400 /* Align offset */ 1401 offset = CDCE_NCM_ALIGN(sc->sc_ncm.tx_remainder, 1402 offset, sc->sc_ncm.tx_modulus); 1403 1404 /* Zero pad */ 1405 cdce_ncm_tx_zero(pc, last_offset, offset); 1406 1407 /* buffer full */ 1408 retval = 2; 1409 1410 for (n = 0; n != sc->sc_ncm.tx_nframe; n++) { 1411 /* check if end of transmit buffer is reached */ 1412 1413 if (offset >= sc->sc_ncm.tx_max) 1414 break; 1415 1416 /* compute maximum buffer size */ 1417 1418 rem = sc->sc_ncm.tx_max - offset; 1419 1420 IFQ_DRV_DEQUEUE(&(ifp->if_snd), m); 1421 1422 if (m == NULL) { 1423 /* buffer not full */ 1424 retval = 1; 1425 break; 1426 } 1427 1428 if (m->m_pkthdr.len > (int)rem) { 1429 if (n == 0) { 1430 /* The frame won't fit in our buffer */ 1431 DPRINTFN(1, "Frame too big to be transmitted!\n"); 1432 m_freem(m); 1433 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1434 n--; 1435 continue; 1436 } 1437 /* Wait till next buffer becomes ready */ 1438 IFQ_DRV_PREPEND(&(ifp->if_snd), m); 1439 break; 1440 } 1441 usbd_m_copy_in(pc, offset, m, 0, m->m_pkthdr.len); 1442 1443 USETW(sc->sc_ncm.dp[n].wFrameLength, m->m_pkthdr.len); 1444 USETW(sc->sc_ncm.dp[n].wFrameIndex, offset); 1445 1446 /* Update offset */ 1447 offset += m->m_pkthdr.len; 1448 1449 /* Store last valid offset before alignment */ 1450 last_offset = offset; 1451 1452 /* Align offset */ 1453 offset = CDCE_NCM_ALIGN(sc->sc_ncm.tx_remainder, 1454 offset, sc->sc_ncm.tx_modulus); 1455 1456 /* Zero pad */ 1457 cdce_ncm_tx_zero(pc, last_offset, offset); 1458 1459 /* 1460 * If there's a BPF listener, bounce a copy 1461 * of this frame to him: 1462 */ 1463 BPF_MTAP(ifp, m); 1464 1465 /* Free mbuf */ 1466 1467 m_freem(m); 1468 1469 /* Pre-increment interface counter */ 1470 1471 if_inc_counter(ifp, IFCOUNTER_OPACKETS, 1); 1472 } 1473 1474 if (n == 0) 1475 return (0); 1476 1477 rem = (sizeof(sc->sc_ncm.dpt) + (4 * n) + 4); 1478 1479 USETW(sc->sc_ncm.dpt.wLength, rem); 1480 1481 /* zero the rest of the data pointer entries */ 1482 for (; n != CDCE_NCM_SUBFRAMES_MAX; n++) { 1483 USETW(sc->sc_ncm.dp[n].wFrameLength, 0); 1484 USETW(sc->sc_ncm.dp[n].wFrameIndex, 0); 1485 } 1486 1487 offset = last_offset; 1488 1489 /* Align offset */ 1490 offset = CDCE_NCM_ALIGN(0, offset, CDCE_NCM_TX_MINLEN); 1491 1492 /* Optimise, save bandwidth and force short termination */ 1493 if (offset >= sc->sc_ncm.tx_max) 1494 offset = sc->sc_ncm.tx_max; 1495 else 1496 offset ++; 1497 1498 /* Zero pad */ 1499 cdce_ncm_tx_zero(pc, last_offset, offset); 1500 1501 /* set frame length */ 1502 usbd_xfer_set_frame_len(xfer, index, offset); 1503 1504 /* Fill out 16-bit header */ 1505 sc->sc_ncm.hdr.dwSignature[0] = 'N'; 1506 sc->sc_ncm.hdr.dwSignature[1] = 'C'; 1507 sc->sc_ncm.hdr.dwSignature[2] = 'M'; 1508 sc->sc_ncm.hdr.dwSignature[3] = 'H'; 1509 USETW(sc->sc_ncm.hdr.wHeaderLength, sizeof(sc->sc_ncm.hdr)); 1510 USETW(sc->sc_ncm.hdr.wBlockLength, offset); 1511 USETW(sc->sc_ncm.hdr.wSequence, sc->sc_ncm.tx_seq); 1512 USETW(sc->sc_ncm.hdr.wDptIndex, sizeof(sc->sc_ncm.hdr)); 1513 1514 sc->sc_ncm.tx_seq++; 1515 1516 /* Fill out 16-bit frame table header */ 1517 sc->sc_ncm.dpt.dwSignature[0] = 'N'; 1518 sc->sc_ncm.dpt.dwSignature[1] = 'C'; 1519 sc->sc_ncm.dpt.dwSignature[2] = 'M'; 1520 sc->sc_ncm.dpt.dwSignature[3] = '0'; 1521 USETW(sc->sc_ncm.dpt.wNextNdpIndex, 0); /* reserved */ 1522 1523 usbd_copy_in(pc, 0, &(sc->sc_ncm.hdr), sizeof(sc->sc_ncm.hdr)); 1524 usbd_copy_in(pc, sizeof(sc->sc_ncm.hdr), &(sc->sc_ncm.dpt), 1525 sizeof(sc->sc_ncm.dpt)); 1526 usbd_copy_in(pc, sizeof(sc->sc_ncm.hdr) + sizeof(sc->sc_ncm.dpt), 1527 &(sc->sc_ncm.dp), sizeof(sc->sc_ncm.dp)); 1528 return (retval); 1529 } 1530 1531 static void 1532 cdce_ncm_bulk_write_callback(struct usb_xfer *xfer, usb_error_t error) 1533 { 1534 struct cdce_softc *sc = usbd_xfer_softc(xfer); 1535 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 1536 uint16_t x; 1537 uint8_t temp; 1538 int actlen; 1539 int aframes; 1540 1541 switch (USB_GET_STATE(xfer)) { 1542 case USB_ST_TRANSFERRED: 1543 1544 usbd_xfer_status(xfer, &actlen, NULL, &aframes, NULL); 1545 1546 DPRINTFN(10, "transfer complete: " 1547 "%u bytes in %u frames\n", actlen, aframes); 1548 1549 case USB_ST_SETUP: 1550 for (x = 0; x != CDCE_NCM_TX_FRAMES_MAX; x++) { 1551 temp = cdce_ncm_fill_tx_frames(xfer, x); 1552 if (temp == 0) 1553 break; 1554 if (temp == 1) { 1555 x++; 1556 break; 1557 } 1558 } 1559 1560 if (x != 0) { 1561 #ifdef USB_DEBUG 1562 usbd_xfer_set_interval(xfer, cdce_tx_interval); 1563 #endif 1564 usbd_xfer_set_frames(xfer, x); 1565 usbd_transfer_submit(xfer); 1566 } 1567 break; 1568 1569 default: /* Error */ 1570 DPRINTFN(10, "Transfer error: %s\n", 1571 usbd_errstr(error)); 1572 1573 /* update error counter */ 1574 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1); 1575 1576 if (error != USB_ERR_CANCELLED) { 1577 if (usbd_get_mode(sc->sc_ue.ue_udev) == USB_MODE_HOST) { 1578 /* try to clear stall first */ 1579 usbd_xfer_set_stall(xfer); 1580 usbd_xfer_set_frames(xfer, 0); 1581 usbd_transfer_submit(xfer); 1582 } 1583 } 1584 break; 1585 } 1586 } 1587 1588 static void 1589 cdce_ncm_bulk_read_callback(struct usb_xfer *xfer, usb_error_t error) 1590 { 1591 struct cdce_softc *sc = usbd_xfer_softc(xfer); 1592 struct usb_page_cache *pc = usbd_xfer_get_frame(xfer, 0); 1593 struct ifnet *ifp = uether_getifp(&sc->sc_ue); 1594 struct mbuf *m; 1595 int sumdata __usbdebug_used; 1596 int sumlen; 1597 int actlen; 1598 int aframes; 1599 int temp; 1600 int nframes; 1601 int x; 1602 int offset; 1603 1604 switch (USB_GET_STATE(xfer)) { 1605 case USB_ST_TRANSFERRED: 1606 1607 usbd_xfer_status(xfer, &actlen, &sumlen, &aframes, NULL); 1608 1609 DPRINTFN(1, "received %u bytes in %u frames\n", 1610 actlen, aframes); 1611 1612 if (actlen < (int)(sizeof(sc->sc_ncm.hdr) + 1613 sizeof(sc->sc_ncm.dpt))) { 1614 DPRINTFN(1, "frame too short\n"); 1615 goto tr_setup; 1616 } 1617 usbd_copy_out(pc, 0, &(sc->sc_ncm.hdr), 1618 sizeof(sc->sc_ncm.hdr)); 1619 1620 if ((sc->sc_ncm.hdr.dwSignature[0] != 'N') || 1621 (sc->sc_ncm.hdr.dwSignature[1] != 'C') || 1622 (sc->sc_ncm.hdr.dwSignature[2] != 'M') || 1623 (sc->sc_ncm.hdr.dwSignature[3] != 'H')) { 1624 DPRINTFN(1, "invalid HDR signature: " 1625 "0x%02x:0x%02x:0x%02x:0x%02x\n", 1626 sc->sc_ncm.hdr.dwSignature[0], 1627 sc->sc_ncm.hdr.dwSignature[1], 1628 sc->sc_ncm.hdr.dwSignature[2], 1629 sc->sc_ncm.hdr.dwSignature[3]); 1630 goto tr_stall; 1631 } 1632 temp = UGETW(sc->sc_ncm.hdr.wBlockLength); 1633 if (temp > sumlen) { 1634 DPRINTFN(1, "unsupported block length %u/%u\n", 1635 temp, sumlen); 1636 goto tr_stall; 1637 } 1638 temp = UGETW(sc->sc_ncm.hdr.wDptIndex); 1639 if ((int)(temp + sizeof(sc->sc_ncm.dpt)) > actlen) { 1640 DPRINTFN(1, "invalid DPT index: 0x%04x\n", temp); 1641 goto tr_stall; 1642 } 1643 usbd_copy_out(pc, temp, &(sc->sc_ncm.dpt), 1644 sizeof(sc->sc_ncm.dpt)); 1645 1646 if ((sc->sc_ncm.dpt.dwSignature[0] != 'N') || 1647 (sc->sc_ncm.dpt.dwSignature[1] != 'C') || 1648 (sc->sc_ncm.dpt.dwSignature[2] != 'M') || 1649 (sc->sc_ncm.dpt.dwSignature[3] != '0')) { 1650 DPRINTFN(1, "invalid DPT signature" 1651 "0x%02x:0x%02x:0x%02x:0x%02x\n", 1652 sc->sc_ncm.dpt.dwSignature[0], 1653 sc->sc_ncm.dpt.dwSignature[1], 1654 sc->sc_ncm.dpt.dwSignature[2], 1655 sc->sc_ncm.dpt.dwSignature[3]); 1656 goto tr_stall; 1657 } 1658 nframes = UGETW(sc->sc_ncm.dpt.wLength) / 4; 1659 1660 /* Subtract size of header and last zero padded entry */ 1661 if (nframes >= (2 + 1)) 1662 nframes -= (2 + 1); 1663 else 1664 nframes = 0; 1665 1666 DPRINTFN(1, "nframes = %u\n", nframes); 1667 1668 temp += sizeof(sc->sc_ncm.dpt); 1669 1670 if ((temp + (4 * nframes)) > actlen) 1671 goto tr_stall; 1672 1673 if (nframes > CDCE_NCM_SUBFRAMES_MAX) { 1674 DPRINTFN(1, "Truncating number of frames from %u to %u\n", 1675 nframes, CDCE_NCM_SUBFRAMES_MAX); 1676 nframes = CDCE_NCM_SUBFRAMES_MAX; 1677 } 1678 usbd_copy_out(pc, temp, &(sc->sc_ncm.dp), (4 * nframes)); 1679 1680 sumdata = 0; 1681 1682 for (x = 0; x != nframes; x++) { 1683 offset = UGETW(sc->sc_ncm.dp[x].wFrameIndex); 1684 temp = UGETW(sc->sc_ncm.dp[x].wFrameLength); 1685 1686 if ((offset == 0) || 1687 (temp < (int)sizeof(struct ether_header)) || 1688 (temp > (MCLBYTES - ETHER_ALIGN))) { 1689 DPRINTFN(1, "NULL frame detected at %d\n", x); 1690 m = NULL; 1691 /* silently ignore this frame */ 1692 continue; 1693 } else if ((offset + temp) > actlen) { 1694 DPRINTFN(1, "invalid frame " 1695 "detected at %d\n", x); 1696 m = NULL; 1697 /* silently ignore this frame */ 1698 continue; 1699 } else if (temp > (int)(MHLEN - ETHER_ALIGN)) { 1700 m = m_getcl(M_NOWAIT, MT_DATA, M_PKTHDR); 1701 } else { 1702 m = m_gethdr(M_NOWAIT, MT_DATA); 1703 } 1704 1705 DPRINTFN(16, "frame %u, offset = %u, length = %u \n", 1706 x, offset, temp); 1707 1708 /* check if we have a buffer */ 1709 if (m) { 1710 m->m_len = m->m_pkthdr.len = temp + ETHER_ALIGN; 1711 m_adj(m, ETHER_ALIGN); 1712 1713 usbd_copy_out(pc, offset, m->m_data, temp); 1714 1715 /* enqueue */ 1716 uether_rxmbuf(&sc->sc_ue, m, temp); 1717 1718 sumdata += temp; 1719 } else { 1720 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1); 1721 } 1722 } 1723 1724 DPRINTFN(1, "Efficiency: %u/%u bytes\n", sumdata, actlen); 1725 1726 case USB_ST_SETUP: 1727 tr_setup: 1728 usbd_xfer_set_frame_len(xfer, 0, sc->sc_ncm.rx_max); 1729 usbd_xfer_set_frames(xfer, 1); 1730 usbd_transfer_submit(xfer); 1731 uether_rxflush(&sc->sc_ue); /* must be last */ 1732 break; 1733 1734 default: /* Error */ 1735 DPRINTFN(1, "error = %s\n", 1736 usbd_errstr(error)); 1737 1738 if (error != USB_ERR_CANCELLED) { 1739 tr_stall: 1740 if (usbd_get_mode(sc->sc_ue.ue_udev) == USB_MODE_HOST) { 1741 /* try to clear stall first */ 1742 usbd_xfer_set_stall(xfer); 1743 usbd_xfer_set_frames(xfer, 0); 1744 usbd_transfer_submit(xfer); 1745 } 1746 } 1747 break; 1748 } 1749 } 1750 #endif 1751