/* * USB Networking Link Interface * * Copyright (C) 2000-2005 by David Brownell * Copyright (C) 2003-2005 David Hollis * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #ifndef __LINUX_USB_USBNET_H #define __LINUX_USB_USBNET_H #include #include /* interface from usbnet core to each USB networking link we handle */ struct usbnet { /* housekeeping */ struct usb_device *udev; struct usb_interface *intf; struct driver_info *driver_info; const char *driver_name; void *driver_priv; /* i/o info: pipes etc */ unsigned in, out, status; unsigned maxpacket; /* protocol/interface state */ struct eth_device edev; struct miiphy_device miiphy; int msg_enable; unsigned long data [5]; u32 xid; u32 hard_mtu; /* count any extra framing */ size_t rx_urb_size; /* size for rx urbs */ unsigned long flags; # define EVENT_TX_HALT 0 # define EVENT_RX_HALT 1 # define EVENT_RX_MEMORY 2 # define EVENT_STS_SPLIT 3 # define EVENT_LINK_RESET 4 }; #if 0 static inline struct usb_driver *driver_of(struct usb_interface *intf) { return to_usb_driver(intf->dev.driver); } #endif /* interface from the device/framing level "minidriver" to core */ struct driver_info { char *description; int flags; /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */ #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */ #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */ #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */ #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */ #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */ #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */ #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */ #define FLAG_WLAN 0x0080 /* use "wlan%d" names */ /* init device ... can sleep, or cause probe() failure */ int (*bind)(struct usbnet *); /* cleanup device ... can sleep, but can't fail */ void (*unbind)(struct usbnet *); /* reset device ... can sleep */ int (*reset)(struct usbnet *); /* see if peer is connected ... can sleep */ int (*check_connect)(struct usbnet *); /* for status polling */ // void (*status)(struct usbnet *, struct urb *); /* link reset handling, called from defer_kevent */ int (*link_reset)(struct usbnet *); /* fixup rx packet (strip framing) */ int (*rx_fixup)(struct usbnet *dev, void *buf, int len); int (*tx_fixup)(struct usbnet *dev, void *buf, int len, void *nbuf, int *nlen); /* early initialization code, can sleep. This is for minidrivers * having 'subminidrivers' that need to do extra initialization * right after minidriver have initialized hardware. */ int (*early_init)(struct usbnet *dev); /* called by minidriver when link state changes, state: 0=disconnect, * 1=connect */ void (*link_change)(struct usbnet *dev, int state); /* for new devices, use the descriptor-reading code instead */ int in; /* rx endpoint */ int out; /* tx endpoint */ unsigned long data; /* Misc driver specific data */ }; /* Minidrivers are just drivers using the "usbnet" core as a powerful * network-specific subroutine library ... that happens to do pretty * much everything except custom framing and chip-specific stuff. */ extern int usbnet_probe(struct usb_device *, const struct usb_device_id *); extern void usbnet_disconnect(struct usb_device *); /* Drivers that reuse some of the standard USB CDC infrastructure * (notably, using multiple interfaces according to the CDC * union descriptor) get some helper code. */ struct cdc_state { struct usb_cdc_header_desc *header; struct usb_cdc_union_desc *u; struct usb_cdc_ether_desc *ether; struct usb_interface *control; struct usb_interface *data; }; extern int usbnet_generic_cdc_bind (struct usbnet *, struct usb_device *); extern void usbnet_cdc_unbind (struct usbnet *, struct usb_device *); /* CDC and RNDIS support the same host-chosen packet filters for IN transfers */ #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \ |USB_CDC_PACKET_TYPE_ALL_MULTICAST \ |USB_CDC_PACKET_TYPE_PROMISCUOUS \ |USB_CDC_PACKET_TYPE_DIRECTED) /* we record the state for each of our queued skbs */ enum skb_state { illegal = 0, tx_start, tx_done, rx_start, rx_done, rx_cleanup }; struct skb_data { /* skb->cb is one of these */ struct urb *urb; struct usbnet *dev; enum skb_state state; size_t length; }; extern int usbnet_get_endpoints(struct usbnet *dev); #if 0 extern void usbnet_defer_kevent (struct usbnet *, int); extern void usbnet_skb_return (struct usbnet *, struct sk_buff *); extern void usbnet_unlink_rx_urbs(struct usbnet *); extern int usbnet_get_settings (struct net_device *net, struct ethtool_cmd *cmd); extern int usbnet_set_settings (struct net_device *net, struct ethtool_cmd *cmd); extern u32 usbnet_get_link (struct net_device *net); extern u32 usbnet_get_msglevel (struct net_device *); extern void usbnet_set_msglevel (struct net_device *, u32); extern void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *); extern int usbnet_nway_reset(struct net_device *net); #endif #endif /* __LINUX_USB_USBNET_H */