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