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 size_t rx_urb_size
; /* size for rx urbs */
48 struct mii_if_info mii
;
50 /* various kinds of pending driver work */
51 struct sk_buff_head rxq
;
52 struct sk_buff_head txq
;
53 struct sk_buff_head done
;
54 struct urb
*interrupt
;
55 struct tasklet_struct bh
;
57 struct work_struct kevent
;
59 # define EVENT_TX_HALT 0
60 # define EVENT_RX_HALT 1
61 # define EVENT_RX_MEMORY 2
62 # define EVENT_STS_SPLIT 3
63 # define EVENT_LINK_RESET 4
66 static inline struct usb_driver
*driver_of(struct usb_interface
*intf
)
68 return to_usb_driver(intf
->dev
.driver
);
71 /* interface from the device/framing level "minidriver" to core */
76 /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
77 #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
78 #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
79 #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
80 #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
82 #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
83 #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
85 #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
87 /* init device ... can sleep, or cause probe() failure */
88 int (*bind
)(struct usbnet
*, struct usb_interface
*);
90 /* cleanup device ... can sleep, but can't fail */
91 void (*unbind
)(struct usbnet
*, struct usb_interface
*);
93 /* reset device ... can sleep */
94 int (*reset
)(struct usbnet
*);
96 /* see if peer is connected ... can sleep */
97 int (*check_connect
)(struct usbnet
*);
99 /* for status polling */
100 void (*status
)(struct usbnet
*, struct urb
*);
102 /* link reset handling, called from defer_kevent */
103 int (*link_reset
)(struct usbnet
*);
105 /* fixup rx packet (strip framing) */
106 int (*rx_fixup
)(struct usbnet
*dev
, struct sk_buff
*skb
);
108 /* fixup tx packet (add framing) */
109 struct sk_buff
*(*tx_fixup
)(struct usbnet
*dev
,
110 struct sk_buff
*skb
, unsigned flags
);
112 /* for new devices, use the descriptor-reading code instead */
113 int in
; /* rx endpoint */
114 int out
; /* tx endpoint */
116 unsigned long data
; /* Misc driver specific data */
119 /* Minidrivers are just drivers using the "usbnet" core as a powerful
120 * network-specific subroutine library ... that happens to do pretty
121 * much everything except custom framing and chip-specific stuff.
123 extern int usbnet_probe(struct usb_interface
*, const struct usb_device_id
*);
124 extern int usbnet_suspend (struct usb_interface
*, pm_message_t
);
125 extern int usbnet_resume (struct usb_interface
*);
126 extern void usbnet_disconnect(struct usb_interface
*);
129 /* we record the state for each of our queued skbs */
133 rx_start
, rx_done
, rx_cleanup
136 struct skb_data
{ /* skb->cb is one of these */
139 enum skb_state state
;
144 extern int usbnet_get_endpoints(struct usbnet
*, struct usb_interface
*);
145 extern void usbnet_defer_kevent (struct usbnet
*, int);
146 extern void usbnet_skb_return (struct usbnet
*, struct sk_buff
*);
148 extern u32
usbnet_get_msglevel (struct net_device
*);
149 extern void usbnet_set_msglevel (struct net_device
*, u32
);
150 extern void usbnet_get_drvinfo (struct net_device
*, struct ethtool_drvinfo
*);
152 /* messaging support includes the interface name, so it must not be
153 * used before it has one ... notably, in minidriver bind() calls.
156 #define devdbg(usbnet, fmt, arg...) \
157 printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
159 #define devdbg(usbnet, fmt, arg...) do {} while(0)
162 #define deverr(usbnet, fmt, arg...) \
163 printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
164 #define devwarn(usbnet, fmt, arg...) \
165 printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
167 #define devinfo(usbnet, fmt, arg...) \
168 printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
171 #endif /* __USBNET_H */