2 * USB Networking Link Interface
4 * Copyright (C) 2000-2005 by David Brownell <dbrownell@users.sourceforge.net>
5 * Copyright (C) 2003-2005 David Hollis <dhollis@davehollis.com>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
27 /* interface from usbnet core to each USB networking link we handle */
30 struct usb_device *udev;
31 struct driver_info *driver_info;
32 wait_queue_head_t *wait;
34 /* i/o info: pipes etc */
36 struct usb_host_endpoint *status;
38 struct timer_list delay;
40 /* protocol/interface state */
41 struct net_device *net;
42 struct net_device_stats stats;
44 unsigned long data [5];
46 u32 hard_mtu; /* count any extra framing */
47 struct mii_if_info mii;
49 /* various kinds of pending driver work */
50 struct sk_buff_head rxq;
51 struct sk_buff_head txq;
52 struct sk_buff_head done;
53 struct urb *interrupt;
54 struct tasklet_struct bh;
56 struct work_struct kevent;
58 # define EVENT_TX_HALT 0
59 # define EVENT_RX_HALT 1
60 # define EVENT_RX_MEMORY 2
61 # define EVENT_STS_SPLIT 3
62 # define EVENT_LINK_RESET 4
65 static inline struct usb_driver *driver_of(struct usb_interface *intf)
67 return to_usb_driver(intf->dev.driver);
70 /* interface from the device/framing level "minidriver" to core */
75 /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
76 #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
77 #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
78 #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
79 #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
81 #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
82 #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
84 #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
86 /* init device ... can sleep, or cause probe() failure */
87 int (*bind)(struct usbnet *, struct usb_interface *);
89 /* cleanup device ... can sleep, but can't fail */
90 void (*unbind)(struct usbnet *, struct usb_interface *);
92 /* reset device ... can sleep */
93 int (*reset)(struct usbnet *);
95 /* see if peer is connected ... can sleep */
96 int (*check_connect)(struct usbnet *);
98 /* for status polling */
99 void (*status)(struct usbnet *, struct urb *);
101 /* link reset handling, called from defer_kevent */
102 int (*link_reset)(struct usbnet *);
104 /* fixup rx packet (strip framing) */
105 int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
107 /* fixup tx packet (add framing) */
108 struct sk_buff *(*tx_fixup)(struct usbnet *dev,
109 struct sk_buff *skb, unsigned flags);
111 /* for new devices, use the descriptor-reading code instead */
112 int in; /* rx endpoint */
113 int out; /* tx endpoint */
115 unsigned long data; /* Misc driver specific data */
118 /* Minidrivers are just drivers using the "usbnet" core as a powerful
119 * network-specific subroutine library ... that happens to do pretty
120 * much everything except custom framing and chip-specific stuff.
122 extern int usbnet_probe(struct usb_interface *, const struct usb_device_id *);
123 extern int usbnet_suspend (struct usb_interface *, pm_message_t );
124 extern int usbnet_resume (struct usb_interface *);
125 extern void usbnet_disconnect(struct usb_interface *);
128 /* we record the state for each of our queued skbs */
132 rx_start, rx_done, rx_cleanup
135 struct skb_data { /* skb->cb is one of these */
138 enum skb_state state;
144 /* messaging support includes the interface name, so it must not be
145 * used before it has one ... notably, in minidriver bind() calls.
148 #define devdbg(usbnet, fmt, arg...) \
149 printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
151 #define devdbg(usbnet, fmt, arg...) do {} while(0)
154 #define deverr(usbnet, fmt, arg...) \
155 printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
156 #define devwarn(usbnet, fmt, arg...) \
157 printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
159 #define devinfo(usbnet, fmt, arg...) \
160 printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
163 #endif /* __USBNET_H */