1 | /* $NetBSD: if_cdce.c,v 1.42 2016/06/10 13:27:15 ozaki-r Exp $ */ |
2 | |
3 | /* |
4 | * Copyright (c) 1997, 1998, 1999, 2000-2003 Bill Paul <wpaul@windriver.com> |
5 | * Copyright (c) 2003 Craig Boston |
6 | * Copyright (c) 2004 Daniel Hartmeier |
7 | * All rights reserved. |
8 | * |
9 | * Redistribution and use in source and binary forms, with or without |
10 | * modification, are permitted provided that the following conditions |
11 | * are met: |
12 | * 1. Redistributions of source code must retain the above copyright |
13 | * notice, this list of conditions and the following disclaimer. |
14 | * 2. Redistributions in binary form must reproduce the above copyright |
15 | * notice, this list of conditions and the following disclaimer in the |
16 | * documentation and/or other materials provided with the distribution. |
17 | * 3. All advertising materials mentioning features or use of this software |
18 | * must display the following acknowledgement: |
19 | * This product includes software developed by Bill Paul. |
20 | * 4. Neither the name of the author nor the names of any co-contributors |
21 | * may be used to endorse or promote products derived from this software |
22 | * without specific prior written permission. |
23 | * |
24 | * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul, THE VOICES IN HIS HEAD OR |
28 | * THE CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
29 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
30 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
31 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
32 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
33 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
34 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
35 | */ |
36 | |
37 | /* |
38 | * USB Communication Device Class (Ethernet Networking Control Model) |
39 | * http://www.usb.org/developers/devclass_docs/usbcdc11.pdf |
40 | * |
41 | */ |
42 | |
43 | #include <sys/cdefs.h> |
44 | __KERNEL_RCSID(0, "$NetBSD: if_cdce.c,v 1.42 2016/06/10 13:27:15 ozaki-r Exp $" ); |
45 | |
46 | #ifdef _KERNEL_OPT |
47 | #include "opt_inet.h" |
48 | #endif |
49 | |
50 | #include <sys/param.h> |
51 | #include <sys/systm.h> |
52 | #include <sys/sockio.h> |
53 | #include <sys/mbuf.h> |
54 | #include <sys/kernel.h> |
55 | #include <sys/socket.h> |
56 | #include <sys/device.h> |
57 | |
58 | #include <net/if.h> |
59 | #include <net/if_arp.h> |
60 | #include <net/if_dl.h> |
61 | #include <net/if_media.h> |
62 | |
63 | #include <net/bpf.h> |
64 | |
65 | #include <net/if_ether.h> |
66 | #ifdef INET |
67 | #include <netinet/in.h> |
68 | #include <netinet/if_inarp.h> |
69 | #endif |
70 | |
71 | |
72 | |
73 | #include <dev/usb/usb.h> |
74 | #include <dev/usb/usbdi.h> |
75 | #include <dev/usb/usbdi_util.h> |
76 | #include <dev/usb/usbdevs.h> |
77 | #include <dev/usb/usbcdc.h> |
78 | |
79 | #include <dev/usb/if_cdcereg.h> |
80 | |
81 | Static int cdce_tx_list_init(struct cdce_softc *); |
82 | Static int cdce_rx_list_init(struct cdce_softc *); |
83 | Static int cdce_newbuf(struct cdce_softc *, struct cdce_chain *, |
84 | struct mbuf *); |
85 | Static int cdce_encap(struct cdce_softc *, struct mbuf *, int); |
86 | Static void cdce_rxeof(struct usbd_xfer *, void *, usbd_status); |
87 | Static void cdce_txeof(struct usbd_xfer *, void *, usbd_status); |
88 | Static void cdce_start(struct ifnet *); |
89 | Static int cdce_ioctl(struct ifnet *, u_long, void *); |
90 | Static void cdce_init(void *); |
91 | Static void cdce_watchdog(struct ifnet *); |
92 | Static void cdce_stop(struct cdce_softc *); |
93 | |
94 | Static const struct cdce_type cdce_devs[] = { |
95 | {{ USB_VENDOR_ACERLABS, USB_PRODUCT_ACERLABS_M5632 }, CDCE_NO_UNION }, |
96 | {{ USB_VENDOR_COMPAQ, USB_PRODUCT_COMPAQ_IPAQLINUX }, CDCE_NO_UNION }, |
97 | {{ USB_VENDOR_GMATE, USB_PRODUCT_GMATE_YP3X00 }, CDCE_NO_UNION }, |
98 | {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN }, CDCE_ZAURUS | CDCE_NO_UNION }, |
99 | {{ USB_VENDOR_MOTOROLA2, USB_PRODUCT_MOTOROLA2_USBLAN2 }, CDCE_ZAURUS | CDCE_NO_UNION }, |
100 | {{ USB_VENDOR_PROLIFIC, USB_PRODUCT_PROLIFIC_PL2501 }, CDCE_NO_UNION }, |
101 | {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5500 }, CDCE_ZAURUS }, |
102 | {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_A300 }, CDCE_ZAURUS | CDCE_NO_UNION }, |
103 | {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_SL5600 }, CDCE_ZAURUS | CDCE_NO_UNION }, |
104 | {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C700 }, CDCE_ZAURUS | CDCE_NO_UNION }, |
105 | {{ USB_VENDOR_SHARP, USB_PRODUCT_SHARP_C750 }, CDCE_ZAURUS | CDCE_NO_UNION }, |
106 | }; |
107 | #define cdce_lookup(v, p) \ |
108 | ((const struct cdce_type *)usb_lookup(cdce_devs, v, p)) |
109 | |
110 | int cdce_match(device_t, cfdata_t, void *); |
111 | void cdce_attach(device_t, device_t, void *); |
112 | int cdce_detach(device_t, int); |
113 | int cdce_activate(device_t, enum devact); |
114 | extern struct cfdriver cdce_cd; |
115 | CFATTACH_DECL_NEW(cdce, sizeof(struct cdce_softc), cdce_match, cdce_attach, |
116 | cdce_detach, cdce_activate); |
117 | |
118 | int |
119 | cdce_match(device_t parent, cfdata_t match, void *aux) |
120 | { |
121 | struct usbif_attach_arg *uiaa = aux; |
122 | |
123 | if (cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product) != NULL) |
124 | return UMATCH_VENDOR_PRODUCT; |
125 | |
126 | if (uiaa->uiaa_class == UICLASS_CDC && uiaa->uiaa_subclass == |
127 | UISUBCLASS_ETHERNET_NETWORKING_CONTROL_MODEL) |
128 | return UMATCH_IFACECLASS_GENERIC; |
129 | |
130 | return UMATCH_NONE; |
131 | } |
132 | |
133 | void |
134 | cdce_attach(device_t parent, device_t self, void *aux) |
135 | { |
136 | struct cdce_softc *sc = device_private(self); |
137 | struct usbif_attach_arg *uiaa = aux; |
138 | char *devinfop; |
139 | int s; |
140 | struct ifnet *ifp; |
141 | struct usbd_device *dev = uiaa->uiaa_device; |
142 | const struct cdce_type *t; |
143 | usb_interface_descriptor_t *id; |
144 | usb_endpoint_descriptor_t *ed; |
145 | const usb_cdc_union_descriptor_t *ud; |
146 | usb_config_descriptor_t *cd; |
147 | int data_ifcno; |
148 | int i, j, numalts; |
149 | u_char eaddr[ETHER_ADDR_LEN]; |
150 | const usb_cdc_ethernet_descriptor_t *ue; |
151 | char eaddr_str[USB_MAX_ENCODED_STRING_LEN]; |
152 | |
153 | sc->cdce_dev = self; |
154 | |
155 | aprint_naive("\n" ); |
156 | aprint_normal("\n" ); |
157 | |
158 | devinfop = usbd_devinfo_alloc(dev, 0); |
159 | aprint_normal_dev(self, "%s\n" , devinfop); |
160 | usbd_devinfo_free(devinfop); |
161 | |
162 | sc->cdce_udev = uiaa->uiaa_device; |
163 | sc->cdce_ctl_iface = uiaa->uiaa_iface; |
164 | |
165 | t = cdce_lookup(uiaa->uiaa_vendor, uiaa->uiaa_product); |
166 | if (t) |
167 | sc->cdce_flags = t->cdce_flags; |
168 | |
169 | if (sc->cdce_flags & CDCE_NO_UNION) |
170 | sc->cdce_data_iface = sc->cdce_ctl_iface; |
171 | else { |
172 | ud = (const usb_cdc_union_descriptor_t *)usb_find_desc(sc->cdce_udev, |
173 | UDESC_CS_INTERFACE, UDESCSUB_CDC_UNION); |
174 | if (ud == NULL) { |
175 | aprint_error_dev(self, "no union descriptor\n" ); |
176 | return; |
177 | } |
178 | data_ifcno = ud->bSlaveInterface[0]; |
179 | |
180 | for (i = 0; i < uiaa->uiaa_nifaces; i++) { |
181 | if (uiaa->uiaa_ifaces[i] != NULL) { |
182 | id = usbd_get_interface_descriptor( |
183 | uiaa->uiaa_ifaces[i]); |
184 | if (id != NULL && id->bInterfaceNumber == |
185 | data_ifcno) { |
186 | sc->cdce_data_iface = uiaa->uiaa_ifaces[i]; |
187 | uiaa->uiaa_ifaces[i] = NULL; |
188 | } |
189 | } |
190 | } |
191 | } |
192 | |
193 | if (sc->cdce_data_iface == NULL) { |
194 | aprint_error_dev(self, "no data interface\n" ); |
195 | return; |
196 | } |
197 | |
198 | /* |
199 | * <quote> |
200 | * The Data Class interface of a networking device shall have a minimum |
201 | * of two interface settings. The first setting (the default interface |
202 | * setting) includes no endpoints and therefore no networking traffic is |
203 | * exchanged whenever the default interface setting is selected. One or |
204 | * more additional interface settings are used for normal operation, and |
205 | * therefore each includes a pair of endpoints (one IN, and one OUT) to |
206 | * exchange network traffic. Select an alternate interface setting to |
207 | * initialize the network aspects of the device and to enable the |
208 | * exchange of network traffic. |
209 | * </quote> |
210 | * |
211 | * Some devices, most notably cable modems, include interface settings |
212 | * that have no IN or OUT endpoint, therefore loop through the list of all |
213 | * available interface settings looking for one with both IN and OUT |
214 | * endpoints. |
215 | */ |
216 | id = usbd_get_interface_descriptor(sc->cdce_data_iface); |
217 | cd = usbd_get_config_descriptor(sc->cdce_udev); |
218 | numalts = usbd_get_no_alts(cd, id->bInterfaceNumber); |
219 | |
220 | for (j = 0; j < numalts; j++) { |
221 | if (usbd_set_interface(sc->cdce_data_iface, j)) { |
222 | aprint_error_dev(sc->cdce_dev, |
223 | "setting alternate interface failed\n" ); |
224 | return; |
225 | } |
226 | /* Find endpoints. */ |
227 | id = usbd_get_interface_descriptor(sc->cdce_data_iface); |
228 | sc->cdce_bulkin_no = sc->cdce_bulkout_no = -1; |
229 | for (i = 0; i < id->bNumEndpoints; i++) { |
230 | ed = usbd_interface2endpoint_descriptor(sc->cdce_data_iface, i); |
231 | if (!ed) { |
232 | aprint_error_dev(self, |
233 | "could not read endpoint descriptor\n" ); |
234 | return; |
235 | } |
236 | if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && |
237 | UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { |
238 | sc->cdce_bulkin_no = ed->bEndpointAddress; |
239 | } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_OUT && |
240 | UE_GET_XFERTYPE(ed->bmAttributes) == UE_BULK) { |
241 | sc->cdce_bulkout_no = ed->bEndpointAddress; |
242 | } else if (UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN && |
243 | UE_GET_XFERTYPE(ed->bmAttributes) == UE_INTERRUPT) { |
244 | /* XXX: CDC spec defines an interrupt pipe, but it is not |
245 | * needed for simple host-to-host applications. */ |
246 | } else { |
247 | aprint_error_dev(self, "unexpected endpoint\n" ); |
248 | } |
249 | } |
250 | /* If we found something, try and use it... */ |
251 | if ((sc->cdce_bulkin_no != -1) && (sc->cdce_bulkout_no != -1)) |
252 | break; |
253 | } |
254 | |
255 | if (sc->cdce_bulkin_no == -1) { |
256 | aprint_error_dev(self, "could not find data bulk in\n" ); |
257 | return; |
258 | } |
259 | if (sc->cdce_bulkout_no == -1 ) { |
260 | aprint_error_dev(self, "could not find data bulk out\n" ); |
261 | return; |
262 | } |
263 | |
264 | ue = (const usb_cdc_ethernet_descriptor_t *)usb_find_desc(dev, |
265 | UDESC_CS_INTERFACE, UDESCSUB_CDC_ENF); |
266 | if (!ue || usbd_get_string(dev, ue->iMacAddress, eaddr_str) || |
267 | ether_aton_r(eaddr, sizeof(eaddr), eaddr_str)) { |
268 | aprint_normal_dev(self, "faking address\n" ); |
269 | eaddr[0]= 0x2a; |
270 | memcpy(&eaddr[1], &hardclock_ticks, sizeof(uint32_t)); |
271 | eaddr[5] = (uint8_t)(device_unit(sc->cdce_dev)); |
272 | } |
273 | |
274 | s = splnet(); |
275 | |
276 | aprint_normal_dev(self, "address %s\n" , ether_sprintf(eaddr)); |
277 | |
278 | ifp = GET_IFP(sc); |
279 | ifp->if_softc = sc; |
280 | ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; |
281 | ifp->if_ioctl = cdce_ioctl; |
282 | ifp->if_start = cdce_start; |
283 | ifp->if_watchdog = cdce_watchdog; |
284 | strncpy(ifp->if_xname, device_xname(sc->cdce_dev), IFNAMSIZ); |
285 | |
286 | IFQ_SET_READY(&ifp->if_snd); |
287 | |
288 | if_attach(ifp); |
289 | ether_ifattach(ifp, eaddr); |
290 | |
291 | sc->cdce_attached = 1; |
292 | splx(s); |
293 | |
294 | usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->cdce_udev, |
295 | sc->cdce_dev); |
296 | |
297 | if (!pmf_device_register(self, NULL, NULL)) |
298 | aprint_error_dev(self, "couldn't establish power handler\n" ); |
299 | |
300 | return; |
301 | } |
302 | |
303 | int |
304 | cdce_detach(device_t self, int flags) |
305 | { |
306 | struct cdce_softc *sc = device_private(self); |
307 | struct ifnet *ifp = GET_IFP(sc); |
308 | int s; |
309 | |
310 | pmf_device_deregister(self); |
311 | |
312 | s = splusb(); |
313 | |
314 | if (!sc->cdce_attached) { |
315 | splx(s); |
316 | return 0; |
317 | } |
318 | |
319 | if (ifp->if_flags & IFF_RUNNING) |
320 | cdce_stop(sc); |
321 | |
322 | ether_ifdetach(ifp); |
323 | |
324 | if_detach(ifp); |
325 | |
326 | sc->cdce_attached = 0; |
327 | splx(s); |
328 | |
329 | return 0; |
330 | } |
331 | |
332 | Static void |
333 | cdce_start(struct ifnet *ifp) |
334 | { |
335 | struct cdce_softc *sc = ifp->if_softc; |
336 | struct mbuf *m_head = NULL; |
337 | |
338 | if (sc->cdce_dying || (ifp->if_flags & IFF_OACTIVE)) |
339 | return; |
340 | |
341 | IFQ_POLL(&ifp->if_snd, m_head); |
342 | if (m_head == NULL) |
343 | return; |
344 | |
345 | if (cdce_encap(sc, m_head, 0)) { |
346 | ifp->if_flags |= IFF_OACTIVE; |
347 | return; |
348 | } |
349 | |
350 | IFQ_DEQUEUE(&ifp->if_snd, m_head); |
351 | |
352 | bpf_mtap(ifp, m_head); |
353 | |
354 | ifp->if_flags |= IFF_OACTIVE; |
355 | |
356 | ifp->if_timer = 6; |
357 | } |
358 | |
359 | Static int |
360 | cdce_encap(struct cdce_softc *sc, struct mbuf *m, int idx) |
361 | { |
362 | struct cdce_chain *c; |
363 | usbd_status err; |
364 | int = 0; |
365 | |
366 | c = &sc->cdce_cdata.cdce_tx_chain[idx]; |
367 | |
368 | m_copydata(m, 0, m->m_pkthdr.len, c->cdce_buf); |
369 | if (sc->cdce_flags & CDCE_ZAURUS) { |
370 | /* Zaurus wants a 32-bit CRC appended to every frame */ |
371 | uint32_t crc; |
372 | |
373 | crc = htole32(~ether_crc32_le(c->cdce_buf, m->m_pkthdr.len)); |
374 | memcpy(c->cdce_buf + m->m_pkthdr.len, &crc, sizeof(crc)); |
375 | extra = sizeof(crc); |
376 | } |
377 | c->cdce_mbuf = m; |
378 | |
379 | usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, m->m_pkthdr.len + extra, |
380 | USBD_FORCE_SHORT_XFER, 10000, cdce_txeof); |
381 | err = usbd_transfer(c->cdce_xfer); |
382 | if (err != USBD_IN_PROGRESS) { |
383 | cdce_stop(sc); |
384 | return EIO; |
385 | } |
386 | |
387 | sc->cdce_cdata.cdce_tx_cnt++; |
388 | |
389 | return 0; |
390 | } |
391 | |
392 | Static void |
393 | cdce_stop(struct cdce_softc *sc) |
394 | { |
395 | usbd_status err; |
396 | struct ifnet *ifp = GET_IFP(sc); |
397 | int i; |
398 | |
399 | ifp->if_timer = 0; |
400 | |
401 | if (sc->cdce_bulkin_pipe != NULL) { |
402 | err = usbd_abort_pipe(sc->cdce_bulkin_pipe); |
403 | if (err) |
404 | printf("%s: abort rx pipe failed: %s\n" , |
405 | device_xname(sc->cdce_dev), usbd_errstr(err)); |
406 | } |
407 | |
408 | if (sc->cdce_bulkout_pipe != NULL) { |
409 | err = usbd_abort_pipe(sc->cdce_bulkout_pipe); |
410 | if (err) |
411 | printf("%s: abort tx pipe failed: %s\n" , |
412 | device_xname(sc->cdce_dev), usbd_errstr(err)); |
413 | } |
414 | |
415 | for (i = 0; i < CDCE_RX_LIST_CNT; i++) { |
416 | if (sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf != NULL) { |
417 | m_freem(sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf); |
418 | sc->cdce_cdata.cdce_rx_chain[i].cdce_mbuf = NULL; |
419 | } |
420 | if (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer != NULL) { |
421 | usbd_destroy_xfer |
422 | (sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer); |
423 | sc->cdce_cdata.cdce_rx_chain[i].cdce_xfer = NULL; |
424 | } |
425 | } |
426 | |
427 | for (i = 0; i < CDCE_TX_LIST_CNT; i++) { |
428 | if (sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf != NULL) { |
429 | m_freem(sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf); |
430 | sc->cdce_cdata.cdce_tx_chain[i].cdce_mbuf = NULL; |
431 | } |
432 | if (sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer != NULL) { |
433 | usbd_destroy_xfer( |
434 | sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer); |
435 | sc->cdce_cdata.cdce_tx_chain[i].cdce_xfer = NULL; |
436 | } |
437 | } |
438 | |
439 | if (sc->cdce_bulkin_pipe != NULL) { |
440 | err = usbd_close_pipe(sc->cdce_bulkin_pipe); |
441 | if (err) |
442 | printf("%s: close rx pipe failed: %s\n" , |
443 | device_xname(sc->cdce_dev), usbd_errstr(err)); |
444 | sc->cdce_bulkin_pipe = NULL; |
445 | } |
446 | |
447 | if (sc->cdce_bulkout_pipe != NULL) { |
448 | err = usbd_close_pipe(sc->cdce_bulkout_pipe); |
449 | if (err) |
450 | printf("%s: close tx pipe failed: %s\n" , |
451 | device_xname(sc->cdce_dev), usbd_errstr(err)); |
452 | sc->cdce_bulkout_pipe = NULL; |
453 | } |
454 | |
455 | ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); |
456 | } |
457 | |
458 | Static int |
459 | cdce_ioctl(struct ifnet *ifp, u_long command, void *data) |
460 | { |
461 | struct cdce_softc *sc = ifp->if_softc; |
462 | struct ifaddr *ifa = (struct ifaddr *)data; |
463 | struct ifreq *ifr = (struct ifreq *)data; |
464 | int s, error = 0; |
465 | |
466 | if (sc->cdce_dying) |
467 | return EIO; |
468 | |
469 | s = splnet(); |
470 | |
471 | switch(command) { |
472 | case SIOCINITIFADDR: |
473 | ifp->if_flags |= IFF_UP; |
474 | cdce_init(sc); |
475 | switch (ifa->ifa_addr->sa_family) { |
476 | #ifdef INET |
477 | case AF_INET: |
478 | arp_ifinit(ifp, ifa); |
479 | break; |
480 | #endif /* INET */ |
481 | } |
482 | break; |
483 | |
484 | case SIOCSIFMTU: |
485 | if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > ETHERMTU) |
486 | error = EINVAL; |
487 | else if ((error = ifioctl_common(ifp, command, data)) == ENETRESET) |
488 | error = 0; |
489 | break; |
490 | |
491 | case SIOCSIFFLAGS: |
492 | if ((error = ifioctl_common(ifp, command, data)) != 0) |
493 | break; |
494 | /* XXX re-use ether_ioctl() */ |
495 | switch (ifp->if_flags & (IFF_UP|IFF_RUNNING)) { |
496 | case IFF_UP: |
497 | cdce_init(sc); |
498 | break; |
499 | case IFF_RUNNING: |
500 | cdce_stop(sc); |
501 | break; |
502 | default: |
503 | break; |
504 | } |
505 | break; |
506 | |
507 | default: |
508 | error = ether_ioctl(ifp, command, data); |
509 | break; |
510 | } |
511 | |
512 | splx(s); |
513 | |
514 | if (error == ENETRESET) |
515 | error = 0; |
516 | |
517 | return error; |
518 | } |
519 | |
520 | Static void |
521 | cdce_watchdog(struct ifnet *ifp) |
522 | { |
523 | struct cdce_softc *sc = ifp->if_softc; |
524 | |
525 | if (sc->cdce_dying) |
526 | return; |
527 | |
528 | ifp->if_oerrors++; |
529 | printf("%s: watchdog timeout\n" , device_xname(sc->cdce_dev)); |
530 | } |
531 | |
532 | Static void |
533 | cdce_init(void *xsc) |
534 | { |
535 | struct cdce_softc *sc = xsc; |
536 | struct ifnet *ifp = GET_IFP(sc); |
537 | struct cdce_chain *c; |
538 | usbd_status err; |
539 | int s, i; |
540 | |
541 | if (ifp->if_flags & IFF_RUNNING) |
542 | return; |
543 | |
544 | s = splnet(); |
545 | |
546 | /* Maybe set multicast / broadcast here??? */ |
547 | |
548 | err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkin_no, |
549 | USBD_EXCLUSIVE_USE, &sc->cdce_bulkin_pipe); |
550 | if (err) { |
551 | printf("%s: open rx pipe failed: %s\n" , device_xname(sc->cdce_dev), |
552 | usbd_errstr(err)); |
553 | splx(s); |
554 | return; |
555 | } |
556 | |
557 | err = usbd_open_pipe(sc->cdce_data_iface, sc->cdce_bulkout_no, |
558 | USBD_EXCLUSIVE_USE, &sc->cdce_bulkout_pipe); |
559 | if (err) { |
560 | printf("%s: open tx pipe failed: %s\n" , |
561 | device_xname(sc->cdce_dev), usbd_errstr(err)); |
562 | splx(s); |
563 | return; |
564 | } |
565 | |
566 | if (cdce_tx_list_init(sc)) { |
567 | printf("%s: tx list init failed\n" , device_xname(sc->cdce_dev)); |
568 | splx(s); |
569 | return; |
570 | } |
571 | |
572 | if (cdce_rx_list_init(sc)) { |
573 | printf("%s: rx list init failed\n" , device_xname(sc->cdce_dev)); |
574 | splx(s); |
575 | return; |
576 | } |
577 | |
578 | for (i = 0; i < CDCE_RX_LIST_CNT; i++) { |
579 | c = &sc->cdce_cdata.cdce_rx_chain[i]; |
580 | |
581 | usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, |
582 | USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); |
583 | usbd_transfer(c->cdce_xfer); |
584 | } |
585 | |
586 | ifp->if_flags |= IFF_RUNNING; |
587 | ifp->if_flags &= ~IFF_OACTIVE; |
588 | |
589 | splx(s); |
590 | } |
591 | |
592 | Static int |
593 | cdce_newbuf(struct cdce_softc *sc, struct cdce_chain *c, struct mbuf *m) |
594 | { |
595 | struct mbuf *m_new = NULL; |
596 | |
597 | if (m == NULL) { |
598 | MGETHDR(m_new, M_DONTWAIT, MT_DATA); |
599 | if (m_new == NULL) { |
600 | printf("%s: no memory for rx list " |
601 | "-- packet dropped!\n" , device_xname(sc->cdce_dev)); |
602 | return ENOBUFS; |
603 | } |
604 | MCLGET(m_new, M_DONTWAIT); |
605 | if (!(m_new->m_flags & M_EXT)) { |
606 | printf("%s: no memory for rx list " |
607 | "-- packet dropped!\n" , device_xname(sc->cdce_dev)); |
608 | m_freem(m_new); |
609 | return ENOBUFS; |
610 | } |
611 | m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; |
612 | } else { |
613 | m_new = m; |
614 | m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; |
615 | m_new->m_data = m_new->m_ext.ext_buf; |
616 | } |
617 | c->cdce_mbuf = m_new; |
618 | return 0; |
619 | } |
620 | |
621 | Static int |
622 | cdce_rx_list_init(struct cdce_softc *sc) |
623 | { |
624 | struct cdce_cdata *cd; |
625 | struct cdce_chain *c; |
626 | int i; |
627 | |
628 | cd = &sc->cdce_cdata; |
629 | for (i = 0; i < CDCE_RX_LIST_CNT; i++) { |
630 | c = &cd->cdce_rx_chain[i]; |
631 | c->cdce_sc = sc; |
632 | c->cdce_idx = i; |
633 | if (cdce_newbuf(sc, c, NULL) == ENOBUFS) |
634 | return ENOBUFS; |
635 | if (c->cdce_xfer == NULL) { |
636 | int err = usbd_create_xfer(sc->cdce_bulkin_pipe, |
637 | CDCE_BUFSZ, USBD_SHORT_XFER_OK, 0, &c->cdce_xfer); |
638 | if (err) |
639 | return err; |
640 | c->cdce_buf = usbd_get_buffer(c->cdce_xfer); |
641 | } |
642 | } |
643 | |
644 | return 0; |
645 | } |
646 | |
647 | Static int |
648 | cdce_tx_list_init(struct cdce_softc *sc) |
649 | { |
650 | struct cdce_cdata *cd; |
651 | struct cdce_chain *c; |
652 | int i; |
653 | |
654 | cd = &sc->cdce_cdata; |
655 | for (i = 0; i < CDCE_TX_LIST_CNT; i++) { |
656 | c = &cd->cdce_tx_chain[i]; |
657 | c->cdce_sc = sc; |
658 | c->cdce_idx = i; |
659 | c->cdce_mbuf = NULL; |
660 | if (c->cdce_xfer == NULL) { |
661 | int err = usbd_create_xfer(sc->cdce_bulkout_pipe, |
662 | CDCE_BUFSZ, USBD_FORCE_SHORT_XFER, 0, |
663 | &c->cdce_xfer); |
664 | if (err) |
665 | return err; |
666 | c->cdce_buf = usbd_get_buffer(c->cdce_xfer); |
667 | } |
668 | } |
669 | |
670 | return 0; |
671 | } |
672 | |
673 | Static void |
674 | cdce_rxeof(struct usbd_xfer *xfer, void *priv, usbd_status status) |
675 | { |
676 | struct cdce_chain *c = priv; |
677 | struct cdce_softc *sc = c->cdce_sc; |
678 | struct ifnet *ifp = GET_IFP(sc); |
679 | struct mbuf *m; |
680 | int total_len = 0; |
681 | int s; |
682 | |
683 | if (sc->cdce_dying || !(ifp->if_flags & IFF_RUNNING)) |
684 | return; |
685 | |
686 | if (status != USBD_NORMAL_COMPLETION) { |
687 | if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) |
688 | return; |
689 | if (sc->cdce_rxeof_errors == 0) |
690 | printf("%s: usb error on rx: %s\n" , |
691 | device_xname(sc->cdce_dev), usbd_errstr(status)); |
692 | if (status == USBD_STALLED) |
693 | usbd_clear_endpoint_stall_async(sc->cdce_bulkin_pipe); |
694 | DELAY(sc->cdce_rxeof_errors * 10000); |
695 | sc->cdce_rxeof_errors++; |
696 | goto done; |
697 | } |
698 | |
699 | sc->cdce_rxeof_errors = 0; |
700 | |
701 | usbd_get_xfer_status(xfer, NULL, NULL, &total_len, NULL); |
702 | if (sc->cdce_flags & CDCE_ZAURUS) |
703 | total_len -= 4; /* Strip off CRC added by Zaurus */ |
704 | if (total_len <= 1) |
705 | goto done; |
706 | |
707 | m = c->cdce_mbuf; |
708 | memcpy(mtod(m, char *), c->cdce_buf, total_len); |
709 | |
710 | if (total_len < sizeof(struct ether_header)) { |
711 | ifp->if_ierrors++; |
712 | goto done; |
713 | } |
714 | |
715 | ifp->if_ipackets++; |
716 | m->m_pkthdr.len = m->m_len = total_len; |
717 | m_set_rcvif(m, ifp); |
718 | |
719 | s = splnet(); |
720 | |
721 | if (cdce_newbuf(sc, c, NULL) == ENOBUFS) { |
722 | ifp->if_ierrors++; |
723 | goto done1; |
724 | } |
725 | |
726 | bpf_mtap(ifp, m); |
727 | |
728 | if_percpuq_enqueue((ifp)->if_percpuq, (m)); |
729 | |
730 | done1: |
731 | splx(s); |
732 | |
733 | done: |
734 | /* Setup new transfer. */ |
735 | usbd_setup_xfer(c->cdce_xfer, c, c->cdce_buf, CDCE_BUFSZ, |
736 | USBD_SHORT_XFER_OK, USBD_NO_TIMEOUT, cdce_rxeof); |
737 | usbd_transfer(c->cdce_xfer); |
738 | } |
739 | |
740 | Static void |
741 | cdce_txeof(struct usbd_xfer *xfer, void *priv, |
742 | usbd_status status) |
743 | { |
744 | struct cdce_chain *c = priv; |
745 | struct cdce_softc *sc = c->cdce_sc; |
746 | struct ifnet *ifp = GET_IFP(sc); |
747 | usbd_status err; |
748 | int s; |
749 | |
750 | if (sc->cdce_dying) |
751 | return; |
752 | |
753 | s = splnet(); |
754 | |
755 | ifp->if_timer = 0; |
756 | ifp->if_flags &= ~IFF_OACTIVE; |
757 | |
758 | if (status != USBD_NORMAL_COMPLETION) { |
759 | if (status == USBD_NOT_STARTED || status == USBD_CANCELLED) { |
760 | splx(s); |
761 | return; |
762 | } |
763 | ifp->if_oerrors++; |
764 | printf("%s: usb error on tx: %s\n" , device_xname(sc->cdce_dev), |
765 | usbd_errstr(status)); |
766 | if (status == USBD_STALLED) |
767 | usbd_clear_endpoint_stall_async(sc->cdce_bulkout_pipe); |
768 | splx(s); |
769 | return; |
770 | } |
771 | |
772 | usbd_get_xfer_status(c->cdce_xfer, NULL, NULL, NULL, &err); |
773 | |
774 | if (c->cdce_mbuf != NULL) { |
775 | m_freem(c->cdce_mbuf); |
776 | c->cdce_mbuf = NULL; |
777 | } |
778 | |
779 | if (err) |
780 | ifp->if_oerrors++; |
781 | else |
782 | ifp->if_opackets++; |
783 | |
784 | if (IFQ_IS_EMPTY(&ifp->if_snd) == 0) |
785 | cdce_start(ifp); |
786 | |
787 | splx(s); |
788 | } |
789 | |
790 | int |
791 | cdce_activate(device_t self, enum devact act) |
792 | { |
793 | struct cdce_softc *sc = device_private(self); |
794 | |
795 | switch (act) { |
796 | case DVACT_DEACTIVATE: |
797 | if_deactivate(GET_IFP(sc)); |
798 | sc->cdce_dying = 1; |
799 | return 0; |
800 | default: |
801 | return EOPNOTSUPP; |
802 | } |
803 | } |
804 | |