// SPDX-License-Identifier: GPL-2.0-or-later /* * Driver for USB ethernet port of Conexant CX82310-based ADSL routers * Copyright (C) 2010 by Ondrej Zary * some parts inspired by the cxacru driver */ #include <linux/module.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/workqueue.h> #include <linux/mii.h> #include <linux/usb.h> #include <linux/usb/usbnet.h> enum cx82310_cmd { … }; enum cx82310_status { … }; #define CMD_PACKET_SIZE … #define CMD_TIMEOUT … #define CMD_REPLY_RETRY … #define CX82310_MTU … #define CMD_EP … struct cx82310_priv { … }; /* * execute control command * - optionally send some data (command parameters) * - optionally wait for the reply * - optionally read some data from the reply */ static int cx82310_cmd(struct usbnet *dev, enum cx82310_cmd cmd, bool reply, u8 *wdata, int wlen, u8 *rdata, int rlen) { … } static int cx82310_enable_ethernet(struct usbnet *dev) { … } static void cx82310_reenable_work(struct work_struct *work) { … } #define partial_len … #define partial_rem … #define partial_data … static int cx82310_bind(struct usbnet *dev, struct usb_interface *intf) { … } static void cx82310_unbind(struct usbnet *dev, struct usb_interface *intf) { … } /* * RX is NOT easy - we can receive multiple packets per skb, each having 2-byte * packet length at the beginning. * The last packet might be incomplete (when it crosses the 4KB URB size), * continuing in the next skb (without any headers). * If a packet has odd length, there is one extra byte at the end (before next * packet or at the end of the URB). */ static int cx82310_rx_fixup(struct usbnet *dev, struct sk_buff *skb) { … } /* TX is easy, just add 2 bytes of length at the beginning */ static struct sk_buff *cx82310_tx_fixup(struct usbnet *dev, struct sk_buff *skb, gfp_t flags) { … } static const struct driver_info cx82310_info = …; #define USB_DEVICE_CLASS(vend, prod, cl, sc, pr) … static const struct usb_device_id products[] = …; MODULE_DEVICE_TABLE(usb, products); static struct usb_driver cx82310_driver = …; module_usb_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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