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 device 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
66 /* interface from the device/framing level "minidriver" to core */
71 /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
72 #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
73 #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
74 #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
75 #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
77 #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
78 #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
80 #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
82 /* init device ... can sleep, or cause probe() failure */
83 int (*bind)(struct usbnet *, struct usb_interface *);
85 /* cleanup device ... can sleep, but can't fail */
86 void (*unbind)(struct usbnet *, struct usb_interface *);
88 /* reset device ... can sleep */
89 int (*reset)(struct usbnet *);
91 /* see if peer is connected ... can sleep */
92 int (*check_connect)(struct usbnet *);
94 /* for status polling */
95 void (*status)(struct usbnet *, struct urb *);
97 /* link reset handling, called from defer_kevent */
98 int (*link_reset)(struct usbnet *);
100 /* fixup rx packet (strip framing) */
101 int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
103 /* fixup tx packet (add framing) */
104 struct sk_buff *(*tx_fixup)(struct usbnet *dev,
105 struct sk_buff *skb, unsigned flags);
107 /* for new devices, use the descriptor-reading code instead */
108 int in; /* rx endpoint */
109 int out; /* tx endpoint */
111 unsigned long data; /* Misc driver specific data */
115 /* we record the state for each of our queued skbs */
119 rx_start, rx_done, rx_cleanup
122 struct skb_data { /* skb->cb is one of these */
125 enum skb_state state;
131 /* messaging support includes the interface name, so it must not be
132 * used before it has one ... notably, in minidriver bind() calls.
135 #define devdbg(usbnet, fmt, arg...) \
136 printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
138 #define devdbg(usbnet, fmt, arg...) do {} while(0)
141 #define deverr(usbnet, fmt, arg...) \
142 printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
143 #define devwarn(usbnet, fmt, arg...) \
144 printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
146 #define devinfo(usbnet, fmt, arg...) \
147 printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
150 #endif /* __USBNET_H */