| 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 | |