--- /dev/null
+/*
+ * f_phonet.c -- USB CDC Phonet function
+ *
+ * Copyright (C) 2007-2008 Nokia Corporation. All rights reserved.
+ *
+ * Author: Rémi Denis-Courmont
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * version 2 as published by the Free Software Foundation.
+ */
+
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+
+#include <linux/netdevice.h>
+#include <linux/if_ether.h>
+#include <linux/if_phonet.h>
+#include <linux/if_arp.h>
+
+#include <linux/usb/ch9.h>
+#include <linux/usb/cdc.h>
+#include <linux/usb/composite.h>
+
+#include "u_phonet.h"
+#include "u_ether.h"
+
+#define PN_MEDIA_USB 0x1B
+#define MAXPACKET 512
+#if (PAGE_SIZE % MAXPACKET)
+#error MAXPACKET must divide PAGE_SIZE!
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+struct phonet_port {
+ struct f_phonet *usb;
+ spinlock_t lock;
+};
+
+struct f_phonet {
+ struct usb_function function;
+ struct {
+ struct sk_buff *skb;
+ spinlock_t lock;
+ } rx;
+ struct net_device *dev;
+ struct usb_ep *in_ep, *out_ep;
+
+ struct usb_request *in_req;
+ struct usb_request *out_reqv[0];
+};
+
+static int phonet_rxq_size = 17;
+
+static inline struct f_phonet *func_to_pn(struct usb_function *f)
+{
+ return container_of(f, struct f_phonet, function);
+}
+
+/*-------------------------------------------------------------------------*/
+
+#define USB_CDC_SUBCLASS_PHONET 0xfe
+#define USB_CDC_PHONET_TYPE 0xab
+
+static struct usb_interface_descriptor
+pn_control_intf_desc = {
+ .bLength = sizeof pn_control_intf_desc,
+ .bDescriptorType = USB_DT_INTERFACE,
+
+ /* .bInterfaceNumber = DYNAMIC, */
+ .bInterfaceClass = USB_CLASS_COMM,
+ .bInterfaceSubClass = USB_CDC_SUBCLASS_PHONET,
+};
+
+static const struct usb_cdc_header_desc
+pn_header_desc = {
+ .bLength = sizeof pn_header_desc,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubType = USB_CDC_HEADER_TYPE,
+ .bcdCDC = cpu_to_le16(0x0110),
+};
+
+static const struct usb_cdc_header_desc
+pn_phonet_desc = {
+ .bLength = sizeof pn_phonet_desc,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubType = USB_CDC_PHONET_TYPE,
+ .bcdCDC = cpu_to_le16(0x1505), /* ??? */
+};
+
+static struct usb_cdc_union_desc
+pn_union_desc = {
+ .bLength = sizeof pn_union_desc,
+ .bDescriptorType = USB_DT_CS_INTERFACE,
+ .bDescriptorSubType = USB_CDC_UNION_TYPE,
+
+ /* .bMasterInterface0 = DYNAMIC, */
+ /* .bSlaveInterface0 = DYNAMIC, */
+};
+
+static struct usb_interface_descriptor
+pn_data_nop_intf_desc = {
+ .bLength = sizeof pn_data_nop_intf_desc,
+ .bDescriptorType = USB_DT_INTERFACE,
+
+ /* .bInterfaceNumber = DYNAMIC, */
+ .bAlternateSetting = 0,
+ .bNumEndpoints = 0,
+ .bInterfaceClass = USB_CLASS_CDC_DATA,
+};
+
+static struct usb_interface_descriptor
+pn_data_intf_desc = {
+ .bLength = sizeof pn_data_intf_desc,
+ .bDescriptorType = USB_DT_INTERFACE,
+
+ /* .bInterfaceNumber = DYNAMIC, */
+ .bAlternateSetting = 1,
+ .bNumEndpoints = 2,
+ .bInterfaceClass = USB_CLASS_CDC_DATA,
+};
+
+static struct usb_endpoint_descriptor
+pn_fs_sink_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+};
+
+static struct usb_endpoint_descriptor
+pn_hs_sink_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_OUT,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = cpu_to_le16(MAXPACKET),
+};
+
+static struct usb_endpoint_descriptor
+pn_fs_source_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+};
+
+static struct usb_endpoint_descriptor
+pn_hs_source_desc = {
+ .bLength = USB_DT_ENDPOINT_SIZE,
+ .bDescriptorType = USB_DT_ENDPOINT,
+
+ .bEndpointAddress = USB_DIR_IN,
+ .bmAttributes = USB_ENDPOINT_XFER_BULK,
+ .wMaxPacketSize = cpu_to_le16(512),
+};
+
+static struct usb_descriptor_header *fs_pn_function[] = {
+ (struct usb_descriptor_header *) &pn_control_intf_desc,
+ (struct usb_descriptor_header *) &pn_header_desc,
+ (struct usb_descriptor_header *) &pn_phonet_desc,
+ (struct usb_descriptor_header *) &pn_union_desc,
+ (struct usb_descriptor_header *) &pn_data_nop_intf_desc,
+ (struct usb_descriptor_header *) &pn_data_intf_desc,
+ (struct usb_descriptor_header *) &pn_fs_sink_desc,
+ (struct usb_descriptor_header *) &pn_fs_source_desc,
+ NULL,
+};
+
+static struct usb_descriptor_header *hs_pn_function[] = {
+ (struct usb_descriptor_header *) &pn_control_intf_desc,
+ (struct usb_descriptor_header *) &pn_header_desc,
+ (struct usb_descriptor_header *) &pn_phonet_desc,
+ (struct usb_descriptor_header *) &pn_union_desc,
+ (struct usb_descriptor_header *) &pn_data_nop_intf_desc,
+ (struct usb_descriptor_header *) &pn_data_intf_desc,
+ (struct usb_descriptor_header *) &pn_hs_sink_desc,
+ (struct usb_descriptor_header *) &pn_hs_source_desc,
+ NULL,
+};
+
+/*-------------------------------------------------------------------------*/
+
+static int pn_net_open(struct net_device *dev)
+{
+ netif_wake_queue(dev);
+ return 0;
+}
+
+static int pn_net_close(struct net_device *dev)
+{
+ netif_stop_queue(dev);
+ return 0;
+}
+
+static void pn_tx_complete(struct usb_ep *ep, struct usb_request *req)
+{
+ struct f_phonet *fp = ep->driver_data;
+ struct net_device *dev = fp->dev;
+ struct sk_buff *skb = req->context;
+
+ switch (req->status) {
+ case 0:
+ dev->stats.tx_packets++;
+ dev->stats.tx_bytes += skb->len;
+ break;
+
+ case -ESHUTDOWN: /* disconnected */
+ case -ECONNRESET: /* disabled */
+ dev->stats.tx_aborted_errors++;
+ default:
+ dev->stats.tx_errors++;
+ }
+
+ dev_kfree_skb_any(skb);
+ netif_wake_queue(dev);
+}
+
+static int pn_net_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+ struct phonet_port *port = netdev_priv(dev);
+ struct f_phonet *fp;
+ struct usb_request *req;
+ unsigned long flags;
+
+ if (skb->protocol != htons(ETH_P_PHONET))
+ goto out;
+
+ spin_lock_irqsave(&port->lock, flags);
+ fp = port->usb;
+ if (unlikely(!fp)) /* race with carrier loss */
+ goto out_unlock;
+
+ req = fp->in_req;
+ req->buf = skb->data;
+ req->length = skb->len;
+ req->complete = pn_tx_complete;
+ req->zero = 1;
+ req->context = skb;
+
+ if (unlikely(usb_ep_queue(fp->in_ep, req, GFP_ATOMIC)))
+ goto out_unlock;
+
+ netif_stop_queue(dev);
+ skb = NULL;
+
+out_unlock:
+ spin_unlock_irqrestore(&port->lock, flags);
+out:
+ if (unlikely(skb)) {
+ dev_kfree_skb(skb);
+ dev->stats.tx_dropped++;
+ }
+ return NETDEV_TX_OK;
+}
+
+static int pn_net_mtu(struct net_device *dev, int new_mtu)
+{
+ if ((new_mtu < PHONET_MIN_MTU) || (new_mtu > PHONET_MAX_MTU))
+ return -EINVAL;
+ dev->mtu = new_mtu;
+ return 0;
+}
+
+static const struct net_device_ops pn_netdev_ops = {
+ .ndo_open = pn_net_open,
+ .ndo_stop = pn_net_close,
+ .ndo_start_xmit = pn_net_xmit,
+ .ndo_change_mtu = pn_net_mtu,
+};
+
+static void pn_net_setup(struct net_device *dev)
+{
+ dev->features = 0;
+ dev->type = ARPHRD_PHONET;
+ dev->flags = IFF_POINTOPOINT | IFF_NOARP;
+ dev->mtu = PHONET_DEV_MTU;
+ dev->hard_header_len = 1;
+ dev->dev_addr[0] = PN_MEDIA_USB;
+ dev->addr_len = 1;
+ dev->tx_queue_len = 1;
+
+ dev->netdev_ops = &pn_netdev_ops;
+ dev->destructor = free_netdev;
+ dev->header_ops = &phonet_header_ops;
+}
+
+/*-------------------------------------------------------------------------*/
+
+/*
+ * Queue buffer for data from the host
+ */
+static int
+pn_rx_submit(struct f_phonet *fp, struct usb_request *req, gfp_t gfp_flags)
+{
+ struct page *page;
+ int err;
+
+ page = __dev_alloc_page(gfp_flags | __GFP_NOMEMALLOC);
+ if (!page)
+ return -ENOMEM;
+
+ req->buf = page_address(page);
+ req->length = PAGE_SIZE;
+ req->context = page;
+
+ err = usb_ep_queue(fp->out_ep, req, gfp_flags);
+ if (unlikely(err))
+ put_page(page);
+ return err;
+}
+
+static void pn_rx_complete(struct usb_ep *ep, struct usb_request *req)
+{
+ struct f_phonet *fp = ep->driver_data;
+ struct net_device *dev = fp->dev;
+ struct page *page = req->context;
+ struct sk_buff *skb;
+ unsigned long flags;
+ int status = req->status;
+
+ switch (status) {
+ case 0:
+ spin_lock_irqsave(&fp->rx.lock, flags);
+ skb = fp->rx.skb;
+ if (!skb)
+ skb = fp->rx.skb = netdev_alloc_skb(dev, 12);
+ if (req->actual < req->length) /* Last fragment */
+ fp->rx.skb = NULL;
+ spin_unlock_irqrestore(&fp->rx.lock, flags);
+
+ if (unlikely(!skb))
+ break;
+
+ if (skb->len == 0) { /* First fragment */
+ skb->protocol = htons(ETH_P_PHONET);
+ skb_reset_mac_header(skb);
+ /* Can't use pskb_pull() on page in IRQ */
+ memcpy(skb_put(skb, 1), page_address(page), 1);
+ }
+
+ skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, page,
+ skb->len <= 1, req->actual, PAGE_SIZE);
+ page = NULL;
+
+ if (req->actual < req->length) { /* Last fragment */
+ skb->dev = dev;
+ dev->stats.rx_packets++;
+ dev->stats.rx_bytes += skb->len;
+
+ netif_rx(skb);
+ }
+ break;
+
+ /* Do not resubmit in these cases: */
+ case -ESHUTDOWN: /* disconnect */
+ case -ECONNABORTED: /* hw reset */
+ case -ECONNRESET: /* dequeued (unlink or netif down) */
+ req = NULL;
+ break;
+
+ /* Do resubmit in these cases: */
+ case -EOVERFLOW: /* request buffer overflow */
+ dev->stats.rx_over_errors++;
+ default:
+ dev->stats.rx_errors++;
+ break;
+ }
+
+ if (page)
+ put_page(page);
+ if (req)
+ pn_rx_submit(fp, req, GFP_ATOMIC);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static void __pn_reset(struct usb_function *f)
+{
+ struct f_phonet *fp = func_to_pn(f);
+ struct net_device *dev = fp->dev;
+ struct phonet_port *port = netdev_priv(dev);
+
+ netif_carrier_off(dev);
+ port->usb = NULL;
+
+ usb_ep_disable(fp->out_ep);
+ usb_ep_disable(fp->in_ep);
+ if (fp->rx.skb) {
+ dev_kfree_skb_irq(fp->rx.skb);
+ fp->rx.skb = NULL;
+ }
+}
+
+static int pn_set_alt(struct usb_function *f, unsigned intf, unsigned alt)
+{
+ struct f_phonet *fp = func_to_pn(f);
+ struct usb_gadget *gadget = fp->function.config->cdev->gadget;
+
+ if (intf == pn_control_intf_desc.bInterfaceNumber)
+ /* control interface, no altsetting */
+ return (alt > 0) ? -EINVAL : 0;
+
+ if (intf == pn_data_intf_desc.bInterfaceNumber) {
+ struct net_device *dev = fp->dev;
+ struct phonet_port *port = netdev_priv(dev);
+
+ /* data intf (0: inactive, 1: active) */
+ if (alt > 1)
+ return -EINVAL;
+
+ spin_lock(&port->lock);
+
+ if (fp->in_ep->driver_data)
+ __pn_reset(f);
+
+ if (alt == 1) {
+ int i;
+
+ if (config_ep_by_speed(gadget, f, fp->in_ep) ||
+ config_ep_by_speed(gadget, f, fp->out_ep)) {
+ fp->in_ep->desc = NULL;
+ fp->out_ep->desc = NULL;
+ spin_unlock(&port->lock);
+ return -EINVAL;
+ }
+ usb_ep_enable(fp->out_ep);
+ usb_ep_enable(fp->in_ep);
+
+ port->usb = fp;
+ fp->out_ep->driver_data = fp;
+ fp->in_ep->driver_data = fp;
+
+ netif_carrier_on(dev);
+ for (i = 0; i < phonet_rxq_size; i++)
+ pn_rx_submit(fp, fp->out_reqv[i], GFP_ATOMIC);
+ }
+ spin_unlock(&port->lock);
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
+static int pn_get_alt(struct usb_function *f, unsigned intf)
+{
+ struct f_phonet *fp = func_to_pn(f);
+
+ if (intf == pn_control_intf_desc.bInterfaceNumber)
+ return 0;
+
+ if (intf == pn_data_intf_desc.bInterfaceNumber) {
+ struct phonet_port *port = netdev_priv(fp->dev);
+ u8 alt;
+
+ spin_lock(&port->lock);
+ alt = port->usb != NULL;
+ spin_unlock(&port->lock);
+ return alt;
+ }
+
+ return -EINVAL;
+}
+
+static void pn_disconnect(struct usb_function *f)
+{
+ struct f_phonet *fp = func_to_pn(f);
+ struct phonet_port *port = netdev_priv(fp->dev);
+ unsigned long flags;
+
+ /* remain disabled until set_alt */
+ spin_lock_irqsave(&port->lock, flags);
+ __pn_reset(f);
+ spin_unlock_irqrestore(&port->lock, flags);
+}
+
+/*-------------------------------------------------------------------------*/
+
+static int pn_bind(struct usb_configuration *c, struct usb_function *f)
+{
+ struct usb_composite_dev *cdev = c->cdev;
+ struct usb_gadget *gadget = cdev->gadget;
+ struct f_phonet *fp = func_to_pn(f);
+ struct usb_ep *ep;
+ int status, i;
+
+ struct f_phonet_opts *phonet_opts;
+
+ phonet_opts = container_of(f->fi, struct f_phonet_opts, func_inst);
+
+ /*
+ * in drivers/usb/gadget/configfs.c:configfs_composite_bind()
+ * configurations are bound in sequence with list_for_each_entry,
+ * in each configuration its functions are bound in sequence
+ * with list_for_each_entry, so we assume no race condition
+ * with regard to phonet_opts->bound access
+ */
+ if (!phonet_opts->bound) {
+ gphonet_set_gadget(phonet_opts->net, gadget);
+ status = gphonet_register_netdev(phonet_opts->net);
+ if (status)
+ return status;
+ phonet_opts->bound = true;
+ }
+
+ /* Reserve interface IDs */
+ status = usb_interface_id(c, f);
+ if (status < 0)
+ goto err;
+ pn_control_intf_desc.bInterfaceNumber = status;
+ pn_union_desc.bMasterInterface0 = status;
+
+ status = usb_interface_id(c, f);
+ if (status < 0)
+ goto err;
+ pn_data_nop_intf_desc.bInterfaceNumber = status;
+ pn_data_intf_desc.bInterfaceNumber = status;
+ pn_union_desc.bSlaveInterface0 = status;
+
+ /* Reserve endpoints */
+ status = -ENODEV;
+ ep = usb_ep_autoconfig(gadget, &pn_fs_sink_desc);
+ if (!ep)
+ goto err;
+ fp->out_ep = ep;
+ ep->driver_data = fp; /* Claim */
+
+ ep = usb_ep_autoconfig(gadget, &pn_fs_source_desc);
+ if (!ep)
+ goto err;
+ fp->in_ep = ep;
+ ep->driver_data = fp; /* Claim */
+
+ pn_hs_sink_desc.bEndpointAddress = pn_fs_sink_desc.bEndpointAddress;
+ pn_hs_source_desc.bEndpointAddress = pn_fs_source_desc.bEndpointAddress;
+
+ /* Do not try to bind Phonet twice... */
+ status = usb_assign_descriptors(f, fs_pn_function, hs_pn_function,
+ NULL);
+ if (status)
+ goto err;
+
+ /* Incoming USB requests */
+ status = -ENOMEM;
+ for (i = 0; i < phonet_rxq_size; i++) {
+ struct usb_request *req;
+
+ req = usb_ep_alloc_request(fp->out_ep, GFP_KERNEL);
+ if (!req)
+ goto err_req;
+
+ req->complete = pn_rx_complete;
+ fp->out_reqv[i] = req;
+ }
+
+ /* Outgoing USB requests */
+ fp->in_req = usb_ep_alloc_request(fp->in_ep, GFP_KERNEL);
+ if (!fp->in_req)
+ goto err_req;
+
+ INFO(cdev, "USB CDC Phonet function\n");
+ INFO(cdev, "using %s, OUT %s, IN %s\n", cdev->gadget->name,
+ fp->out_ep->name, fp->in_ep->name);
+ return 0;
+
+err_req:
+ for (i = 0; i < phonet_rxq_size && fp->out_reqv[i]; i++)
+ usb_ep_free_request(fp->out_ep, fp->out_reqv[i]);
+ usb_free_all_descriptors(f);
+err:
+ if (fp->out_ep)
+ fp->out_ep->driver_data = NULL;
+ if (fp->in_ep)
+ fp->in_ep->driver_data = NULL;
+ ERROR(cdev, "USB CDC Phonet: cannot autoconfigure\n");
+ return status;
+}
+
+static inline struct f_phonet_opts *to_f_phonet_opts(struct config_item *item)
+{
+ return container_of(to_config_group(item), struct f_phonet_opts,
+ func_inst.group);
+}
+
+CONFIGFS_ATTR_STRUCT(f_phonet_opts);
+static ssize_t f_phonet_attr_show(struct config_item *item,
+ struct configfs_attribute *attr,
+ char *page)
+{
+ struct f_phonet_opts *opts = to_f_phonet_opts(item);
+ struct f_phonet_opts_attribute *f_phonet_opts_attr =
+ container_of(attr, struct f_phonet_opts_attribute, attr);
+ ssize_t ret = 0;
+
+ if (f_phonet_opts_attr->show)
+ ret = f_phonet_opts_attr->show(opts, page);
+ return ret;
+}
+
+static void phonet_attr_release(struct config_item *item)
+{
+ struct f_phonet_opts *opts = to_f_phonet_opts(item);
+
+ usb_put_function_instance(&opts->func_inst);
+}
+
+static struct configfs_item_operations phonet_item_ops = {
+ .release = phonet_attr_release,
+ .show_attribute = f_phonet_attr_show,
+};
+
+static ssize_t f_phonet_ifname_show(struct f_phonet_opts *opts, char *page)
+{
+ return gether_get_ifname(opts->net, page, PAGE_SIZE);
+}
+
+static struct f_phonet_opts_attribute f_phonet_ifname =
+ __CONFIGFS_ATTR_RO(ifname, f_phonet_ifname_show);
+
+static struct configfs_attribute *phonet_attrs[] = {
+ &f_phonet_ifname.attr,
+ NULL,
+};
+
+static struct config_item_type phonet_func_type = {
+ .ct_item_ops = &phonet_item_ops,
+ .ct_attrs = phonet_attrs,
+ .ct_owner = THIS_MODULE,
+};
+
+static void phonet_free_inst(struct usb_function_instance *f)
+{
+ struct f_phonet_opts *opts;
+
+ opts = container_of(f, struct f_phonet_opts, func_inst);
+ if (opts->bound)
+ gphonet_cleanup(opts->net);
+ else
+ free_netdev(opts->net);
+ kfree(opts);
+}
+
+static struct usb_function_instance *phonet_alloc_inst(void)
+{
+ struct f_phonet_opts *opts;
+
+ opts = kzalloc(sizeof(*opts), GFP_KERNEL);
+ if (!opts)
+ return ERR_PTR(-ENOMEM);
+
+ opts->func_inst.free_func_inst = phonet_free_inst;
+ opts->net = gphonet_setup_default();
+ if (IS_ERR(opts->net)) {
+ struct net_device *net = opts->net;
+ kfree(opts);
+ return ERR_CAST(net);
+ }
+
+ config_group_init_type_name(&opts->func_inst.group, "",
+ &phonet_func_type);
+
+ return &opts->func_inst;
+}
+
+static void phonet_free(struct usb_function *f)
+{
+ struct f_phonet *phonet;
+
+ phonet = func_to_pn(f);
+ kfree(phonet);
+}
+
+static void pn_unbind(struct usb_configuration *c, struct usb_function *f)
+{
+ struct f_phonet *fp = func_to_pn(f);
+ int i;
+
+ /* We are already disconnected */
+ if (fp->in_req)
+ usb_ep_free_request(fp->in_ep, fp->in_req);
+ for (i = 0; i < phonet_rxq_size; i++)
+ if (fp->out_reqv[i])
+ usb_ep_free_request(fp->out_ep, fp->out_reqv[i]);
+
+ usb_free_all_descriptors(f);
+}
+
+static struct usb_function *phonet_alloc(struct usb_function_instance *fi)
+{
+ struct f_phonet *fp;
+ struct f_phonet_opts *opts;
+ int size;
+
+ size = sizeof(*fp) + (phonet_rxq_size * sizeof(struct usb_request *));
+ fp = kzalloc(size, GFP_KERNEL);
+ if (!fp)
+ return ERR_PTR(-ENOMEM);
+
+ opts = container_of(fi, struct f_phonet_opts, func_inst);
+
+ fp->dev = opts->net;
+ fp->function.name = "phonet";
+ fp->function.bind = pn_bind;
+ fp->function.unbind = pn_unbind;
+ fp->function.set_alt = pn_set_alt;
+ fp->function.get_alt = pn_get_alt;
+ fp->function.disable = pn_disconnect;
+ fp->function.free_func = phonet_free;
+ spin_lock_init(&fp->rx.lock);
+
+ return &fp->function;
+}
+
+struct net_device *gphonet_setup_default(void)
+{
+ struct net_device *dev;
+ struct phonet_port *port;
+
+ /* Create net device */
+ dev = alloc_netdev(sizeof(*port), "upnlink%d", NET_NAME_UNKNOWN,
+ pn_net_setup);
+ if (!dev)
+ return ERR_PTR(-ENOMEM);
+
+ port = netdev_priv(dev);
+ spin_lock_init(&port->lock);
+ netif_carrier_off(dev);
+
+ return dev;
+}
+
+void gphonet_set_gadget(struct net_device *net, struct usb_gadget *g)
+{
+ SET_NETDEV_DEV(net, &g->dev);
+}
+
+int gphonet_register_netdev(struct net_device *net)
+{
+ int status;
+
+ status = register_netdev(net);
+ if (status)
+ free_netdev(net);
+
+ return status;
+}
+
+void gphonet_cleanup(struct net_device *dev)
+{
+ unregister_netdev(dev);
+}
+
+DECLARE_USB_FUNCTION_INIT(phonet, phonet_alloc_inst, phonet_alloc);
+MODULE_AUTHOR("Rémi Denis-Courmont");
+MODULE_LICENSE("GPL");
Code Review / kvmfornfv.git / blobdiff