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1 /* 1
2 * USB Networking Link Interface
3 *
4 * Copyright (C) 2000-2005 by David Brownell <
5 * Copyright (C) 2003-2005 David Hollis <dholl
6 *
7 * This program is free software; you can redi
8 * it under the terms of the GNU General Publi
9 * the Free Software Foundation; either versio
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope tha
13 * but WITHOUT ANY WARRANTY; without even the
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * GNU General Public License for more details
16 *
17 * You should have received a copy of the GNU
18 * along with this program; if not, write to t
19 * Foundation, Inc., 59 Temple Place, Suite 33
20 */
21
22
23 #ifndef __USBNET_H
24 #define __USBNET_H
25
26
27 /* interface from usbnet core to each USB netw
28 struct usbnet {
29 /* housekeeping */
30 struct usb_device *udev;
31 struct usb_interface *intf;
32 struct driver_info *driver_info;
33 const char *driver_name;
34 void *driver_priv;
35 wait_queue_head_t *wait;
36 struct mutex phy_mutex;
37 unsigned char suspend_count;
38
39 /* i/o info: pipes etc */
40 unsigned in, out;
41 struct usb_host_endpoint *status;
42 unsigned maxpacket;
43 struct timer_list delay;
44
45 /* protocol/interface state */
46 struct net_device *net;
47 struct net_device_stats stats;
48 int msg_enable;
49 unsigned long data [5];
50 u32 xid;
51 u32 hard_mtu;
52 size_t rx_urb_size;
53 struct mii_if_info mii;
54
55 /* various kinds of pending driver wor
56 struct sk_buff_head rxq;
57 struct sk_buff_head txq;
58 struct sk_buff_head done;
59 struct urb *interrupt;
60 struct tasklet_struct bh;
61
62 struct work_struct kevent;
63 unsigned long flags;
64 # define EVENT_TX_HALT 0
65 # define EVENT_RX_HALT 1
66 # define EVENT_RX_MEMORY 2
67 # define EVENT_STS_SPLIT 3
68 # define EVENT_LINK_RESET 4
69 };
70
71 static inline struct usb_driver *driver_of(str
72 {
73 return to_usb_driver(intf->dev.driver)
74 }
75
76 /* interface from the device/framing level "mi
77 struct driver_info {
78 char *description;
79
80 int flags;
81 /* framing is CDC Ethernet, not writing ZLPs (
82 #define FLAG_FRAMING_NC 0x0001 /* gua
83 #define FLAG_FRAMING_GL 0x0002 /* gen
84 #define FLAG_FRAMING_Z 0x0004 /* zau
85 #define FLAG_FRAMING_RN 0x0008 /* RND
86
87 #define FLAG_NO_SETINT 0x0010 /* dev
88 #define FLAG_ETHER 0x0020 /* may
89
90 #define FLAG_FRAMING_AX 0x0040 /* AX8
91 #define FLAG_WLAN 0x0080 /* use
92
93
94 /* init device ... can sleep, or cause
95 int (*bind)(struct usbnet *, struc
96
97 /* cleanup device ... can sleep, but c
98 void (*unbind)(struct usbnet *, str
99
100 /* reset device ... can sleep */
101 int (*reset)(struct usbnet *);
102
103 /* see if peer is connected ... can sl
104 int (*check_connect)(struct usbnet
105
106 /* for status polling */
107 void (*status)(struct usbnet *, str
108
109 /* link reset handling, called from de
110 int (*link_reset)(struct usbnet *)
111
112 /* fixup rx packet (strip framing) */
113 int (*rx_fixup)(struct usbnet *dev
114
115 /* fixup tx packet (add framing) */
116 struct sk_buff *(*tx_fixup)(struct us
117 struct sk_buff
118
119 /* early initialization code, can slee
120 * having 'subminidrivers' that need t
121 * right after minidriver have initial
122 int (*early_init)(struct usbnet *d
123
124 /* called by minidriver when link stat
125 * 1=connect */
126 void (*link_change)(struct usbnet *
127
128 /* for new devices, use the descriptor
129 int in; /* rx
130 int out; /* tx
131
132 unsigned long data; /* Mis
133 };
134
135 /* Minidrivers are just drivers using the "usb
136 * network-specific subroutine library ... tha
137 * much everything except custom framing and c
138 */
139 extern int usbnet_probe(struct usb_interface *
140 extern int usbnet_suspend (struct usb_interfac
141 extern int usbnet_resume (struct usb_interface
142 extern void usbnet_disconnect(struct usb_inter
143
144
145 /* Drivers that reuse some of the standard USB
146 * (notably, using multiple interfaces accordi
147 * union descriptor) get some helper code.
148 */
149 struct cdc_state {
150 struct usb_cdc_header_desc *heade
151 struct usb_cdc_union_desc *u;
152 struct usb_cdc_ether_desc *ether
153 struct usb_interface *contr
154 struct usb_interface *data;
155 };
156
157 extern int usbnet_generic_cdc_bind (struct usb
158 extern void usbnet_cdc_unbind (struct usbnet *
159
160 /* CDC and RNDIS support the same host-chosen
161 #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_B
162 |USB_CDC_PACKET_TYPE_A
163 |USB_CDC_PACKET_TYPE_P
164 |USB_CDC_PACKET_TYPE_D
165
166
167 /* we record the state for each of our queued
168 enum skb_state {
169 illegal = 0,
170 tx_start, tx_done,
171 rx_start, rx_done, rx_cleanup
172 };
173
174 struct skb_data { /* skb->cb is one of t
175 struct urb *urb;
176 struct usbnet *dev;
177 enum skb_state state;
178 size_t length;
179 };
180
181
182 extern int usbnet_get_endpoints(struct usbnet
183 extern void usbnet_defer_kevent (struct usbnet
184 extern void usbnet_skb_return (struct usbnet *
185 extern void usbnet_unlink_rx_urbs(struct usbne
186
187 extern int usbnet_get_settings (struct net_dev
188 extern int usbnet_set_settings (struct net_dev
189 extern u32 usbnet_get_link (struct net_device
190 extern u32 usbnet_get_msglevel (struct net_dev
191 extern void usbnet_set_msglevel (struct net_de
192 extern void usbnet_get_drvinfo (struct net_dev
193 extern int usbnet_nway_reset(struct net_device
194
195 /* messaging support includes the interface na
196 * used before it has one ... notably, in mini
197 */
198 #ifdef DEBUG
199 #define devdbg(usbnet, fmt, arg...) \
200 printk(KERN_DEBUG "%s: " fmt "\n" , (u
201 #else
202 #define devdbg(usbnet, fmt, arg...) do {} whil
203 #endif
204
205 #define deverr(usbnet, fmt, arg...) \
206 printk(KERN_ERR "%s: " fmt "\n" , (usb
207 #define devwarn(usbnet, fmt, arg...) \
208 printk(KERN_WARNING "%s: " fmt "\n" ,
209
210 #define devinfo(usbnet, fmt, arg...) \
211 printk(KERN_INFO "%s: " fmt "\n" , (us
212
213
214 #endif /* __USBNET_H */
215
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