static int
usbpf_clone_match(struct if_clone *ifc, const char *name)
{
struct usb_bus *ubus;
ubus = usbpf_ifname2ubus(name);
if (ubus == NULL)
return (0);
if (ubus->ifp != NULL)
return (0);
return (1);
}
static int
usbpf_clone_create(struct if_clone *ifc, char *name, size_t len, caddr_t params)
{
int error;
int unit;
struct ifnet *ifp;
struct usb_bus *ubus;
error = ifc_name2unit(name, &unit);
if (error)
return (error);
if (unit < 0)
return (EINVAL);
ubus = usbpf_ifname2ubus(name);
if (ubus == NULL)
return (1);
if (ubus->ifp != NULL)
return (1);
error = ifc_alloc_unit(ifc, &unit);
if (error) {
ifc_free_unit(ifc, unit);
device_printf(ubus->parent, "usbpf: Could not allocate "
"instance\n");
return (error);
}
ifp = ubus->ifp = if_alloc(IFT_USB);
if (ifp == NULL) {
ifc_free_unit(ifc, unit);
device_printf(ubus->parent, "usbpf: Could not allocate "
"instance\n");
return (ENOSPC);
}
strlcpy(ifp->if_xname, name, sizeof(ifp->if_xname));
ifp->if_softc = ubus;
ifp->if_dname = usbusname;
ifp->if_dunit = unit;
ifp->if_ioctl = usbpf_ioctl;
if_attach(ifp);
ifp->if_flags |= IFF_UP;
rt_ifmsg(ifp);
/*
* XXX According to the specification of DLT_USB, it indicates
* packets beginning with USB setup header. But not sure all
* packets would be.
*/
bpfattach(ifp, DLT_USB, USBPF_HDR_LEN);
return (0);
}
