static int ipheth_attach(device_t dev) { struct ipheth_softc *sc = device_get_softc(dev); struct usb_ether *ue = &sc->sc_ue; struct usb_attach_arg *uaa = device_get_ivars(dev); int error; sc->sc_iface_no = uaa->info.bIfaceIndex; device_set_usb_desc(dev); mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); error = usbd_set_alt_interface_index(uaa->device, uaa->info.bIfaceIndex, IPHETH_ALT_INTFNUM); if (error) { device_printf(dev, "Cannot set alternate setting\n"); goto detach; } error = usbd_transfer_setup(uaa->device, &sc->sc_iface_no, sc->sc_xfer, ipheth_config, IPHETH_N_TRANSFER, sc, &sc->sc_mtx); if (error) { device_printf(dev, "Cannot setup USB transfers\n"); goto detach; } ue->ue_sc = sc; ue->ue_dev = dev; ue->ue_udev = uaa->device; ue->ue_mtx = &sc->sc_mtx; ue->ue_methods = &ipheth_ue_methods; error = ipheth_get_mac_addr(sc); if (error) { device_printf(dev, "Cannot get MAC address\n"); goto detach; } error = uether_ifattach(ue); if (error) { device_printf(dev, "could not attach interface\n"); goto detach; } return (0); /* success */ detach: ipheth_detach(dev); return (ENXIO); /* failure */ }
static int cdce_attach(device_t dev) { struct cdce_softc *sc = device_get_softc(dev); struct usb_ether *ue = &sc->sc_ue; struct usb_attach_arg *uaa = device_get_ivars(dev); struct usb_interface *iface; const struct usb_cdc_union_descriptor *ud; const struct usb_interface_descriptor *id; const struct usb_cdc_ethernet_descriptor *ued; const struct usb_config *pcfg; int error; uint8_t i; uint8_t data_iface_no; char eaddr_str[5 * ETHER_ADDR_LEN]; /* approx */ sc->sc_flags = USB_GET_DRIVER_INFO(uaa); sc->sc_ue.ue_udev = uaa->device; device_set_usb_desc(dev); mtx_init(&sc->sc_mtx, device_get_nameunit(dev), NULL, MTX_DEF); ud = usbd_find_descriptor (uaa->device, NULL, uaa->info.bIfaceIndex, UDESC_CS_INTERFACE, 0 - 1, UDESCSUB_CDC_UNION, 0 - 1); if ((ud == NULL) || (ud->bLength < sizeof(*ud)) || (sc->sc_flags & CDCE_FLAG_NO_UNION)) { DPRINTFN(1, "No union descriptor!\n"); sc->sc_ifaces_index[0] = uaa->info.bIfaceIndex; sc->sc_ifaces_index[1] = uaa->info.bIfaceIndex; goto alloc_transfers; } data_iface_no = ud->bSlaveInterface[0]; for (i = 0;; i++) { iface = usbd_get_iface(uaa->device, i); if (iface) { id = usbd_get_interface_descriptor(iface); if (id && (id->bInterfaceNumber == data_iface_no)) { sc->sc_ifaces_index[0] = i; sc->sc_ifaces_index[1] = uaa->info.bIfaceIndex; usbd_set_parent_iface(uaa->device, i, uaa->info.bIfaceIndex); break; } } else { device_printf(dev, "no data interface found\n"); goto detach; } } /* * <quote> * * The Data Class interface of a networking device shall have * a minimum of two interface settings. The first setting * (the default interface setting) includes no endpoints and * therefore no networking traffic is exchanged whenever the * default interface setting is selected. One or more * additional interface settings are used for normal * operation, and therefore each includes a pair of endpoints * (one IN, and one OUT) to exchange network traffic. Select * an alternate interface setting to initialize the network * aspects of the device and to enable the exchange of * network traffic. * * </quote> * * Some devices, most notably cable modems, include interface * settings that have no IN or OUT endpoint, therefore loop * through the list of all available interface settings * looking for one with both IN and OUT endpoints. */ alloc_transfers: pcfg = cdce_config; /* Default Configuration */ for (i = 0; i != 32; i++) { error = usbd_set_alt_interface_index(uaa->device, sc->sc_ifaces_index[0], i); if (error) break; #if CDCE_HAVE_NCM if ((i == 0) && (cdce_ncm_init(sc) == 0)) pcfg = cdce_ncm_config; #endif error = usbd_transfer_setup(uaa->device, sc->sc_ifaces_index, sc->sc_xfer, pcfg, CDCE_N_TRANSFER, sc, &sc->sc_mtx); if (error == 0) break; } if (error || (i == 32)) { device_printf(dev, "No valid alternate " "setting found\n"); goto detach; } ued = usbd_find_descriptor (uaa->device, NULL, uaa->info.bIfaceIndex, UDESC_CS_INTERFACE, 0 - 1, UDESCSUB_CDC_ENF, 0 - 1); if ((ued == NULL) || (ued->bLength < sizeof(*ued))) { error = USB_ERR_INVAL; } else { error = usbd_req_get_string_any(uaa->device, NULL, eaddr_str, sizeof(eaddr_str), ued->iMacAddress); } if (error) { /* fake MAC address */ device_printf(dev, "faking MAC address\n"); sc->sc_ue.ue_eaddr[0] = 0x2a; memcpy(&sc->sc_ue.ue_eaddr[1], &ticks, sizeof(uint32_t)); sc->sc_ue.ue_eaddr[5] = device_get_unit(dev); } else { memset(sc->sc_ue.ue_eaddr, 0, sizeof(sc->sc_ue.ue_eaddr)); for (i = 0; i != (ETHER_ADDR_LEN * 2); i++) { char c = eaddr_str[i]; if ('0' <= c && c <= '9') c -= '0'; else if (c != 0) c -= 'A' - 10; else break; c &= 0xf; if ((i & 1) == 0) c <<= 4; sc->sc_ue.ue_eaddr[i / 2] |= c; } if (uaa->usb_mode == USB_MODE_DEVICE) { /* * Do not use the same MAC address like the peer ! */ sc->sc_ue.ue_eaddr[5] ^= 0xFF; } } ue->ue_sc = sc; ue->ue_dev = dev; ue->ue_udev = uaa->device; ue->ue_mtx = &sc->sc_mtx; ue->ue_methods = &cdce_ue_methods; error = uether_ifattach(ue); if (error) { device_printf(dev, "could not attach interface\n"); goto detach; } return (0); /* success */ detach: cdce_detach(dev); return (ENXIO); /* failure */ }