+
+#else
+
+static void ecm_free_inst(struct usb_function_instance *f)
+{
+ struct f_ecm_opts *opts;
+
+ opts = container_of(f, struct f_ecm_opts, func_inst);
+ if (opts->bound)
+ gether_cleanup(netdev_priv(opts->net));
+ else
+ free_netdev(opts->net);
+ kfree(opts);
+}
+
+static struct usb_function_instance *ecm_alloc_inst(void)
+{
+ struct f_ecm_opts *opts;
+
+ opts = kzalloc(sizeof(*opts), GFP_KERNEL);
+ if (!opts)
+ return ERR_PTR(-ENOMEM);
+
+ opts->func_inst.free_func_inst = ecm_free_inst;
+ opts->net = gether_setup_default();
+ if (IS_ERR(opts->net))
+ return ERR_PTR(PTR_ERR(opts->net));
+
+ return &opts->func_inst;
+}
+
+static void ecm_free(struct usb_function *f)
+{
+ struct f_ecm *ecm;
+
+ ecm = func_to_ecm(f);
+ kfree(ecm);
+}
+
+static void ecm_unbind(struct usb_configuration *c, struct usb_function *f)
+{
+ struct f_ecm *ecm = func_to_ecm(f);
+
+ DBG(c->cdev, "ecm unbind\n");
+
+ ecm_string_defs[0].id = 0;
+ usb_free_all_descriptors(f);
+
+ kfree(ecm->notify_req->buf);
+ usb_ep_free_request(ecm->notify, ecm->notify_req);
+}
+
+struct usb_function *ecm_alloc(struct usb_function_instance *fi)
+{
+ struct f_ecm *ecm;
+ struct f_ecm_opts *opts;
+ int status;
+
+ /* allocate and initialize one new instance */
+ ecm = kzalloc(sizeof(*ecm), GFP_KERNEL);
+ if (!ecm)
+ return ERR_PTR(-ENOMEM);
+
+ opts = container_of(fi, struct f_ecm_opts, func_inst);
+
+ /* export host's Ethernet address in CDC format */
+ status = gether_get_host_addr_cdc(opts->net, ecm->ethaddr,
+ sizeof(ecm->ethaddr));
+ if (status < 12) {
+ kfree(ecm);
+ return ERR_PTR(-EINVAL);
+ }
+ ecm_string_defs[1].s = ecm->ethaddr;
+
+ ecm->port.ioport = netdev_priv(opts->net);
+ ecm->port.cdc_filter = DEFAULT_FILTER;
+
+ ecm->port.func.name = "cdc_ethernet";
+ ecm->port.func.strings = ecm_strings;
+ /* descriptors are per-instance copies */
+ ecm->port.func.bind = ecm_bind;
+ ecm->port.func.unbind = ecm_unbind;
+ ecm->port.func.set_alt = ecm_set_alt;
+ ecm->port.func.get_alt = ecm_get_alt;
+ ecm->port.func.setup = ecm_setup;
+ ecm->port.func.disable = ecm_disable;
+ ecm->port.func.free_func = ecm_free;
+
+ return &ecm->port.func;
+}
+
+DECLARE_USB_FUNCTION_INIT(ecm, ecm_alloc_inst, ecm_alloc);
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("David Brownell");
+
+#endif