FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/if_cdce.c
1 /* $NetBSD: if_cdce.c,v 1.4 2004/10/24 12:50:54 augustss Exp $ */
2
3 /*
4 * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul@windriver.com>
5 * Copyright (c) 2003-2005 Craig Boston
6 * Copyright (c) 2004 Daniel Hartmeier
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by Bill Paul.
20 * 4. Neither the name of the author nor the names of any co-contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul, THE VOICES IN HIS HEAD OR
28 * THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
31 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
32 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
33 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
34 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 /*
38 * USB Communication Device Class (Ethernet Networking Control Model)
39 * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf
40 */
41
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD: src/sys/dev/usb/if_cdce.c,v 1.25 2007/06/30 20:18:44 imp Exp $");
44
45 #include <sys/param.h>
46 #include <sys/systm.h>
47 #include <sys/sockio.h>
48 #include <sys/mbuf.h>
49 #include <sys/malloc.h>
50 #include <sys/kernel.h>
51 #include <sys/module.h>
52 #include <sys/socket.h>
53 #include <sys/endian.h>
54
55 #include <net/if.h>
56 #include <net/if_arp.h>
57 #include <net/ethernet.h>
58 #include <net/if_types.h>
59 #include <net/if_media.h>
60
61 #include <net/bpf.h>
62
63 #include <sys/bus.h>
64 #include <machine/bus.h>
65
66 #include <dev/usb/usb.h>
67 #include <dev/usb/usbdi.h>
68 #include <dev/usb/usbdi_util.h>
69 #include <dev/usb/usbdivar.h>
70 #include <dev/usb/usb_ethersubr.h>
71
72 #include <dev/usb/usbcdc.h>
73 #include "usbdevs.h"
74 #include <dev/usb/if_cdcereg.h>
75
76 static device_probe_t cdce_match;
77 static device_attach_t cdce_attach;
78 static device_detach_t cdce_detach;
79 static device_shutdown_t cdce_shutdown;
80
81 static device_method_t cdce_methods[] = {
82 /* Device interface */
83 DEVMETHOD(device_probe, cdce_match),
84 DEVMETHOD(device_attach, cdce_attach),
85 DEVMETHOD(device_detach, cdce_detach),
86 DEVMETHOD(device_shutdown, cdce_shutdown),
87
88 { 0, 0 }
89 };
90
91 static driver_t cdce_driver = {
92 "cdce",
93 cdce_methods,
94 sizeof(struct cdce_softc)
95 };
96
97 static devclass_t cdce_devclass;
98
99 DRIVER_MODULE(cdce, uhub, cdce_driver, cdce_devclass, usbd_driver_load, 0);
100 MODULE_VERSION(cdce, 0);
101 MODULE_DEPEND(cdce, usb, 1, 1, 1);
102
103 static int cdce_encap(struct cdce_softc *, struct mbuf *, int);
104 static void cdce_rxeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
105 static void cdce_txeof(usbd_xfer_handle, usbd_private_handle, usbd_status);
106 static void cdce_start(struct ifnet *);
107 static int cdce_ioctl(struct ifnet *, u_long, caddr_t);
108 static void cdce_init(void *);
109 static void cdce_reset(struct cdce_softc *);
110 static void cdce_stop(struct cdce_softc *);
111 static void cdce_rxstart(struct ifnet *);
112 static int cdce_ifmedia_upd(struct ifnet *ifp);
113 static void cdce_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr);
114
115 static const struct cdce_type cdce_devs[] = {
116 {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION },
117 {{ USB_VENDOR_AMBIT, USB_PRODUCT_AMBIT_NTL_250 }, CDCE_NO_UNION },
118 {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION },
119 {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION },
120 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION },
121 {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION },
122 {{ USB_VENDOR_NETCHIP, USB_PRODUCT_NETCHIP_ETHERNETGADGET }, CDCE_NO_UNION },
123 {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION },
124 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS },
125 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION },
126 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLA300 }, CDCE_ZAURUS | CDCE_NO_UNION },
127 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC700 }, CDCE_ZAURUS | CDCE_NO_UNION },
128 {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SLC750 }, CDCE_ZAURUS | CDCE_NO_UNION },
129 };
130 #define cdce_lookup(v, p) ((const struct cdce_type *)usb_lookup(cdce_devs, v, p))
131
132 static int
133 cdce_match(device_t self)
134 {
135 struct usb_attach_arg *uaa = device_get_ivars(self);
136 usb_interface_descriptor_t *id;
137
138 if (uaa->iface == NULL)
139 return (UMATCH_NONE);
140
141 id = usbd_get_interface_descriptor(uaa->iface);
142 if (id == NULL)
143 return (UMATCH_NONE);
144
145 if (cdce_lookup(uaa->vendor, uaa->product) != NULL)
146 return (UMATCH_VENDOR_PRODUCT);
147
148 if (id->bInterfaceClass == UICLASS_CDC && id->bInterfaceSubClass ==
149 UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL)
150 return (UMATCH_IFACECLASS_GENERIC);
151
152 return (UMATCH_NONE);
153 }
154
155 static int
156 cdce_attach(device_t self)
157 {
158 struct cdce_softc *sc = device_get_softc(self);
159 struct usb_attach_arg *uaa = device_get_ivars(self);
160 struct ifnet *ifp;
161 usbd_device_handle dev = uaa->device;
162 const struct cdce_type *t;
163 usb_interface_descriptor_t *id;
164 usb_endpoint_descriptor_t *ed;
165 const usb_cdc_union_descriptor_t *ud;
166 usb_config_descriptor_t *cd;
167 int data_ifcno;
168 int i, j, numalts;
169 u_char eaddr[ETHER_ADDR_LEN];
170 const usb_cdc_ethernet_descriptor_t *ue;
171 char eaddr_str[USB_MAX_STRING_LEN];
172
173 sc->cdce_dev = self;
174 sc->cdce_udev = uaa->device;
175
176 t = cdce_lookup(uaa->vendor, uaa->product);
177 if (t)
178 sc->cdce_flags = t->cdce_flags;
179
180 if (sc->cdce_flags & CDCE_NO_UNION)
181 sc->cdce_data_iface = uaa->iface;
182 else {
183 ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev,
184 UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION);
185 if (ud == NULL) {
186 device_printf(sc->cdce_dev, "no union descriptor\n");
187 return ENXIO;
188 }
189 data_ifcno = ud->bSlaveInterface[0];
190
191 for (i = 0; i < uaa->nifaces; i++) {
192 if (uaa->ifaces[i] != NULL) {
193 id = usbd_get_interface_descriptor(
194 uaa->ifaces[i]);
195 if (id != NULL && id->bInterfaceNumber ==
196 data_ifcno) {
197 sc->cdce_data_iface = uaa->ifaces[i];
198 uaa->ifaces[i] = NULL;
199 }
200 }
201 }
202 }
203
204 if (sc->cdce_data_iface == NULL) {
205 device_printf(sc->cdce_dev, "no data interface\n");
206 return ENXIO;
207 }
208
209 /*
210 * <quote>
211 * The Data Class interface of a networking device shall have a minimum
212 * of two interface settings. The first setting (the default interface
213 * setting) includes no endpoints and therefore no networking traffic is
214 * exchanged whenever the default interface setting is selected. One or
215 * more additional interface settings are used for normal operation, and
216 * therefore each includes a pair of endpoints (one IN, and one OUT) to
217 * exchange network traffic. Select an alternate interface setting to
218 * initialize the network aspects of the device and to enable the
219 * exchange of network traffic.
220 * </quote>
221 *
222 * Some devices, most notably cable modems, include interface settings
223 * that have no IN or OUT endpoint, therefore loop through the list of all
224 * available interface settings looking for one with both IN and OUT
225 * endpoints.
226 */
227 id = usbd_get_interface_descriptor(sc->cdce_data_iface);
228 cd = usbd_get_config_descriptor(sc->cdce_udev);
229 numalts = usbd_get_no_alts(cd, id->bInterfaceNumber);
230
231 for (j = 0; j < numalts; j++) {
232 if (usbd_set_interface(sc->cdce_data_iface, j)) {
233 device_printf(sc->cdce_dev,
234 "setting alternate interface failed\n");
235 return ENXIO;
236 }
237 /* Find endpoints. */
238 id = usbd_get_interface_descriptor(sc->cdce_data_iface);
239 sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1;
240 for (i = 0; i < id->bNumEndpoints; i++) {
241 ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i);
242 if (!ed) {
243 device_printf(sc->cdce_dev,
244 "could not read endpoint descriptor\n");
245 return ENXIO;
246 }
247 if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
248 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
249 sc->cdce_bulkin_no = ed->bEndpointAddress;
250 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT &&
251 UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) {
252 sc->cdce_bulkout_no = ed->bEndpointAddress;
253 } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN &&
254 UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) {
255 /* XXX: CDC spec defines an interrupt pipe, but it is not
256 * needed for simple host-to-host applications. */
257 } else {
258 device_printf(sc->cdce_dev,
259 "unexpected endpoint\n");
260 }
261 }
262 /* If we found something, try and use it... */
263 if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1))
264 break;
265 }
266
267 if (sc->cdce_bulkin_no == -1) {
268 device_printf(sc->cdce_dev, "could not find data bulk in\n");
269 return ENXIO;
270 }
271 if (sc->cdce_bulkout_no == -1 ) {
272 device_printf(sc->cdce_dev, "could not find data bulk out\n");
273 return ENXIO;
274 }
275
276 mtx_init(&sc->cdce_mtx, device_get_nameunit(sc->cdce_dev), MTX_NETWORK_LOCK,
277 MTX_DEF | MTX_RECURSE);
278 ifmedia_init(&sc->cdce_ifmedia, 0, cdce_ifmedia_upd, cdce_ifmedia_sts);
279 CDCE_LOCK(sc);
280
281 ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev,
282 UDESC_INTERFACE, UDESCSUB_CDC_ENF);
283 if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str,
284 sizeof(eaddr_str))) {
285 /* Fake MAC address */
286 device_printf(sc->cdce_dev, "faking MAC address\n");
287 eaddr[0]= 0x2a;
288 memcpy(&eaddr[1], &ticks, sizeof(u_int32_t));
289 eaddr[5] = (u_int8_t)device_get_unit(sc->cdce_dev);
290 } else {
291 int i;
292
293 memset(eaddr, 0, ETHER_ADDR_LEN);
294 for (i = 0; i < ETHER_ADDR_LEN * 2; i++) {
295 int c = eaddr_str[i];
296
297 if ('' <= c && c <= '9')
298 c -= '';
299 else
300 c -= 'A' - 10;
301 c &= 0xf;
302 if (c % 2 == 0)
303 c <<= 4;
304 eaddr[i / 2] |= c;
305 }
306 }
307
308 ifp = GET_IFP(sc) = if_alloc(IFT_ETHER);
309 if (ifp == NULL) {
310 device_printf(sc->cdce_dev, "can not if_alloc()\n");
311 CDCE_UNLOCK(sc);
312 mtx_destroy(&sc->cdce_mtx);
313 return ENXIO;
314 }
315 ifp->if_softc = sc;
316 if_initname(ifp, "cdce", device_get_unit(sc->cdce_dev));
317 ifp->if_mtu = ETHERMTU;
318 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST |
319 IFF_NEEDSGIANT;
320 ifp->if_ioctl = cdce_ioctl;
321 ifp->if_output = ether_output;
322 ifp->if_start = cdce_start;
323 ifp->if_init = cdce_init;
324 ifp->if_baudrate = 11000000;
325 ifp->if_snd.ifq_maxlen = IFQ_MAXLEN;
326
327 sc->q.ifp = ifp;
328 sc->q.if_rxstart = cdce_rxstart;
329
330 /* No IFM type for 11Mbps USB, so go with 10baseT */
331 ifmedia_add(&sc->cdce_ifmedia, IFM_ETHER | IFM_10_T, 0, 0);
332 ifmedia_set(&sc->cdce_ifmedia, IFM_ETHER | IFM_10_T);
333
334 ether_ifattach(ifp, eaddr);
335 usb_register_netisr();
336
337 CDCE_UNLOCK(sc);
338
339 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev,
340 sc->cdce_dev);
341
342 return 0;
343 }
344
345 static int
346 cdce_detach(device_t self)
347 {
348 struct cdce_softc *sc = device_get_softc(self);
349 struct ifnet *ifp;
350
351 CDCE_LOCK(sc);
352 sc->cdce_dying = 1;
353 ifp = GET_IFP(sc);
354 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
355 cdce_shutdown(sc->cdce_dev);
356
357 ether_ifdetach(ifp);
358 if_free(ifp);
359 ifmedia_removeall(&sc->cdce_ifmedia);
360 CDCE_UNLOCK(sc);
361 mtx_destroy(&sc->cdce_mtx);
362
363 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->cdce_udev,
364 sc->cdce_dev);
365
366 return (0);
367 }
368
369 static void
370 cdce_start(struct ifnet *ifp)
371 {
372 struct cdce_softc *sc;
373 struct mbuf *m_head = NULL;
374
375 sc = ifp->if_softc;
376 CDCE_LOCK(sc);
377
378
379 if (sc->cdce_dying ||
380 ifp->if_drv_flags & IFF_DRV_OACTIVE ||
381 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
382 CDCE_UNLOCK(sc);
383 return;
384 }
385
386 IF_DEQUEUE(&ifp->if_snd, m_head);
387 if (m_head == NULL) {
388 CDCE_UNLOCK(sc);
389 return;
390 }
391
392 if (cdce_encap(sc, m_head, 0)) {
393 IF_PREPEND(&ifp->if_snd, m_head);
394 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
395 CDCE_UNLOCK(sc);
396 return;
397 }
398
399 BPF_MTAP(ifp, m_head);
400
401 ifp->if_drv_flags |= IFF_DRV_OACTIVE;
402
403 CDCE_UNLOCK(sc);
404
405 return;
406 }
407
408 static int
409 cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx)
410 {
411 struct ue_chain *c;
412 usbd_status err;
413 int extra = 0;
414
415 c = &sc->cdce_cdata.ue_tx_chain[idx];
416
417 m_copydata(m, 0, m->m_pkthdr.len, c->ue_buf);
418 if (sc->cdce_flags & CDCE_ZAURUS) {
419 /* Zaurus wants a 32-bit CRC appended to every frame */
420 u_int32_t crc;
421
422 crc = htole32(crc32(c->ue_buf, m->m_pkthdr.len));
423 bcopy(&crc, c->ue_buf + m->m_pkthdr.len, 4);
424 extra = 4;
425 }
426 c->ue_mbuf = m;
427
428 usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkout_pipe, c, c->ue_buf,
429 m->m_pkthdr.len + extra, 0, 10000, cdce_txeof);
430 err = usbd_transfer(c->ue_xfer);
431 if (err != USBD_IN_PROGRESS) {
432 cdce_stop(sc);
433 return (EIO);
434 }
435
436 sc->cdce_cdata.ue_tx_cnt++;
437
438 return (0);
439 }
440
441 static void
442 cdce_stop(struct cdce_softc *sc)
443 {
444 usbd_status err;
445 struct ifnet *ifp;
446
447 CDCE_LOCK(sc);
448
449 cdce_reset(sc);
450
451 ifp = GET_IFP(sc);
452 ifp->if_timer = 0;
453
454 if (sc->cdce_bulkin_pipe != NULL) {
455 err = usbd_abort_pipe(sc->cdce_bulkin_pipe);
456 if (err)
457 device_printf(sc->cdce_dev,
458 "abort rx pipe failed: %s\n", usbd_errstr(err));
459 err = usbd_close_pipe(sc->cdce_bulkin_pipe);
460 if (err)
461 device_printf(sc->cdce_dev,
462 "close rx pipe failed: %s\n", usbd_errstr(err));
463 sc->cdce_bulkin_pipe = NULL;
464 }
465
466 if (sc->cdce_bulkout_pipe != NULL) {
467 err = usbd_abort_pipe(sc->cdce_bulkout_pipe);
468 if (err)
469 device_printf(sc->cdce_dev,
470 "abort tx pipe failed: %s\n", usbd_errstr(err));
471 err = usbd_close_pipe(sc->cdce_bulkout_pipe);
472 if (err)
473 device_printf(sc->cdce_dev,
474 "close tx pipe failed: %s\n", usbd_errstr(err));
475 sc->cdce_bulkout_pipe = NULL;
476 }
477
478 usb_ether_rx_list_free(&sc->cdce_cdata);
479 usb_ether_tx_list_free(&sc->cdce_cdata);
480
481 ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE);
482 CDCE_UNLOCK(sc);
483
484 return;
485 }
486
487 static int
488 cdce_shutdown(device_t dev)
489 {
490 struct cdce_softc *sc;
491
492 sc = device_get_softc(dev);
493 cdce_stop(sc);
494
495 return (0);
496 }
497
498 static int
499 cdce_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
500 {
501 struct cdce_softc *sc = ifp->if_softc;
502 struct ifreq *ifr = (struct ifreq *)data;
503 int error = 0;
504
505 if (sc->cdce_dying)
506 return (ENXIO);
507
508 switch(command) {
509 case SIOCSIFFLAGS:
510 if (ifp->if_flags & IFF_UP) {
511 if (!(ifp->if_drv_flags & IFF_DRV_RUNNING))
512 cdce_init(sc);
513 } else {
514 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
515 cdce_stop(sc);
516 }
517 error = 0;
518 break;
519
520 case SIOCSIFMEDIA:
521 case SIOCGIFMEDIA:
522 error = ifmedia_ioctl(ifp, ifr, &sc->cdce_ifmedia, command);
523 break;
524
525 default:
526 error = ether_ioctl(ifp, command, data);
527 break;
528 }
529
530 return (error);
531 }
532
533 static void
534 cdce_reset(struct cdce_softc *sc)
535 {
536 /* XXX Maybe reset the bulk pipes here? */
537 return;
538 }
539
540 static void
541 cdce_init(void *xsc)
542 {
543 struct cdce_softc *sc = xsc;
544 struct ifnet *ifp = GET_IFP(sc);
545 struct ue_chain *c;
546 usbd_status err;
547 int i;
548
549 if (ifp->if_drv_flags & IFF_DRV_RUNNING)
550 return;
551
552 CDCE_LOCK(sc);
553 cdce_reset(sc);
554
555 if (usb_ether_tx_list_init(sc, &sc->cdce_cdata,
556 sc->cdce_udev) == ENOBUFS) {
557 device_printf(sc->cdce_dev, "tx list init failed\n");
558 CDCE_UNLOCK(sc);
559 return;
560 }
561
562 if (usb_ether_rx_list_init(sc, &sc->cdce_cdata,
563 sc->cdce_udev) == ENOBUFS) {
564 device_printf(sc->cdce_dev, "rx list init failed\n");
565 CDCE_UNLOCK(sc);
566 return;
567 }
568
569 /* Maybe set multicast / broadcast here??? */
570
571 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no,
572 USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe);
573 if (err) {
574 device_printf(sc->cdce_dev, "open rx pipe failed: %s\n",
575 usbd_errstr(err));
576 CDCE_UNLOCK(sc);
577 return;
578 }
579
580 err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no,
581 USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe);
582 if (err) {
583 device_printf(sc->cdce_dev, "open tx pipe failed: %s\n",
584 usbd_errstr(err));
585 CDCE_UNLOCK(sc);
586 return;
587 }
588
589 for (i = 0; i < UE_RX_LIST_CNT; i++) {
590 c = &sc->cdce_cdata.ue_rx_chain[i];
591 usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
592 mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK,
593 USBD_NO_TIMEOUT, cdce_rxeof);
594 usbd_transfer(c->ue_xfer);
595 }
596
597 ifp->if_drv_flags |= IFF_DRV_RUNNING;
598 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
599
600 CDCE_UNLOCK(sc);
601
602 return;
603 }
604
605 static void
606 cdce_rxeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
607 {
608 struct ue_chain *c = priv;
609 struct cdce_softc *sc = c->ue_sc;
610 struct ifnet *ifp;
611 struct mbuf *m;
612 int total_len = 0;
613
614 CDCE_LOCK(sc);
615 ifp = GET_IFP(sc);
616
617 if (sc->cdce_dying || !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
618 CDCE_UNLOCK(sc);
619 return;
620 }
621
622 if (status != USBD_NORMAL_COMPLETION) {
623 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
624 CDCE_UNLOCK(sc);
625 return;
626 }
627 if (sc->cdce_rxeof_errors == 0)
628 device_printf(sc->cdce_dev, "usb error on rx: %s\n",
629 usbd_errstr(status));
630 if (status == USBD_STALLED)
631 usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe);
632 DELAY(sc->cdce_rxeof_errors * 10000);
633 sc->cdce_rxeof_errors++;
634 goto done;
635 }
636
637 sc->cdce_rxeof_errors = 0;
638
639 usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL);
640
641 if (sc->cdce_flags & CDCE_ZAURUS)
642 total_len -= 4; /* Strip off CRC added by Zaurus */
643
644 m = c->ue_mbuf;
645
646 if (total_len < sizeof(struct ether_header)) {
647 ifp->if_ierrors++;
648 goto done;
649 }
650
651 ifp->if_ipackets++;
652 m->m_pkthdr.rcvif = (struct ifnet *)&sc->q;
653 m->m_pkthdr.len = m->m_len = total_len;
654
655 /* Put the packet on the special USB input queue. */
656 usb_ether_input(m);
657 CDCE_UNLOCK(sc);
658
659 return;
660
661 done:
662 /* Setup new transfer. */
663 usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
664 mtod(c->ue_mbuf, char *),
665 UE_BUFSZ, USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT,
666 cdce_rxeof);
667 usbd_transfer(c->ue_xfer);
668 CDCE_UNLOCK(sc);
669
670 return;
671 }
672
673 static void
674 cdce_txeof(usbd_xfer_handle xfer, usbd_private_handle priv, usbd_status status)
675 {
676 struct ue_chain *c = priv;
677 struct cdce_softc *sc = c->ue_sc;
678 struct ifnet *ifp;
679 usbd_status err;
680
681 CDCE_LOCK(sc);
682 ifp = GET_IFP(sc);
683
684 if (sc->cdce_dying ||
685 !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
686 CDCE_UNLOCK(sc);
687 return;
688 }
689
690 if (status != USBD_NORMAL_COMPLETION) {
691 if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) {
692 CDCE_UNLOCK(sc);
693 return;
694 }
695 ifp->if_oerrors++;
696 device_printf(sc->cdce_dev, "usb error on tx: %s\n",
697 usbd_errstr(status));
698 if (status == USBD_STALLED)
699 usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe);
700 CDCE_UNLOCK(sc);
701 return;
702 }
703
704 ifp->if_drv_flags &= ~IFF_DRV_OACTIVE;
705 usbd_get_xfer_status(c->ue_xfer, NULL, NULL, NULL, &err);
706
707 if (c->ue_mbuf != NULL) {
708 c->ue_mbuf->m_pkthdr.rcvif = ifp;
709 usb_tx_done(c->ue_mbuf);
710 c->ue_mbuf = NULL;
711 }
712
713 if (err)
714 ifp->if_oerrors++;
715 else
716 ifp->if_opackets++;
717
718 CDCE_UNLOCK(sc);
719
720 return;
721 }
722
723 static void
724 cdce_rxstart(struct ifnet *ifp)
725 {
726 struct cdce_softc *sc;
727 struct ue_chain *c;
728
729 sc = ifp->if_softc;
730 CDCE_LOCK(sc);
731
732 if (sc->cdce_dying || !(ifp->if_drv_flags & IFF_DRV_RUNNING)) {
733 CDCE_UNLOCK(sc);
734 return;
735 }
736
737 c = &sc->cdce_cdata.ue_rx_chain[sc->cdce_cdata.ue_rx_prod];
738
739 c->ue_mbuf = usb_ether_newbuf();
740 if (c->ue_mbuf == NULL) {
741 device_printf(sc->cdce_dev, "no memory for rx list "
742 "-- packet dropped!\n");
743 ifp->if_ierrors++;
744 CDCE_UNLOCK(sc);
745 return;
746 }
747
748 usbd_setup_xfer(c->ue_xfer, sc->cdce_bulkin_pipe, c,
749 mtod(c->ue_mbuf, char *), UE_BUFSZ, USBD_SHORT_XFER_OK,
750 USBD_NO_TIMEOUT, cdce_rxeof);
751 usbd_transfer(c->ue_xfer);
752
753 CDCE_UNLOCK(sc);
754 return;
755 }
756
757 static int
758 cdce_ifmedia_upd(struct ifnet *ifp)
759 {
760
761 /* no-op, cdce has only 1 possible media type */
762 return 0;
763 }
764
765 static void
766 cdce_ifmedia_sts(struct ifnet * const ifp, struct ifmediareq *req)
767 {
768
769 req->ifm_status = IFM_AVALID | IFM_ACTIVE;
770 req->ifm_active = IFM_ETHER | IFM_10_T;
771 }
772
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