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 */
}
