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 usb_interface *intf;
32 struct driver_info *driver_info;
33 const char *driver_name;
34 wait_queue_head_t *wait;
35 struct mutex phy_mutex;
36 unsigned char suspend_count;
38 /* i/o info: pipes etc */
40 struct usb_host_endpoint *status;
42 struct timer_list delay;
44 /* protocol/interface state */
45 struct net_device *net;
46 struct net_device_stats stats;
48 unsigned long data [5];
50 u32 hard_mtu; /* count any extra framing */
51 size_t rx_urb_size; /* size for rx urbs */
52 struct mii_if_info mii;
54 /* various kinds of pending driver work */
55 struct sk_buff_head rxq;
56 struct sk_buff_head txq;
57 struct sk_buff_head done;
58 struct urb *interrupt;
59 struct tasklet_struct bh;
61 struct work_struct kevent;
63 # define EVENT_TX_HALT 0
64 # define EVENT_RX_HALT 1
65 # define EVENT_RX_MEMORY 2
66 # define EVENT_STS_SPLIT 3
67 # define EVENT_LINK_RESET 4
70 static inline struct usb_driver *driver_of(struct usb_interface *intf)
72 return to_usb_driver(intf->dev.driver);
75 /* interface from the device/framing level "minidriver" to core */
80 /* framing is CDC Ethernet, not writing ZLPs (hw issues), or optionally: */
81 #define FLAG_FRAMING_NC 0x0001 /* guard against device dropouts */
82 #define FLAG_FRAMING_GL 0x0002 /* genelink batches packets */
83 #define FLAG_FRAMING_Z 0x0004 /* zaurus adds a trailer */
84 #define FLAG_FRAMING_RN 0x0008 /* RNDIS batches, plus huge header */
86 #define FLAG_NO_SETINT 0x0010 /* device can't set_interface() */
87 #define FLAG_ETHER 0x0020 /* maybe use "eth%d" names */
89 #define FLAG_FRAMING_AX 0x0040 /* AX88772/178 packets */
90 #define FLAG_WLAN 0x0080 /* use "wlan%d" names */
93 /* init device ... can sleep, or cause probe() failure */
94 int (*bind)(struct usbnet *, struct usb_interface *);
96 /* cleanup device ... can sleep, but can't fail */
97 void (*unbind)(struct usbnet *, struct usb_interface *);
99 /* reset device ... can sleep */
100 int (*reset)(struct usbnet *);
102 /* see if peer is connected ... can sleep */
103 int (*check_connect)(struct usbnet *);
105 /* for status polling */
106 void (*status)(struct usbnet *, struct urb *);
108 /* link reset handling, called from defer_kevent */
109 int (*link_reset)(struct usbnet *);
111 /* fixup rx packet (strip framing) */
112 int (*rx_fixup)(struct usbnet *dev, struct sk_buff *skb);
114 /* fixup tx packet (add framing) */
115 struct sk_buff *(*tx_fixup)(struct usbnet *dev,
116 struct sk_buff *skb, gfp_t flags);
118 /* for new devices, use the descriptor-reading code instead */
119 int in; /* rx endpoint */
120 int out; /* tx endpoint */
122 unsigned long data; /* Misc driver specific data */
125 /* Minidrivers are just drivers using the "usbnet" core as a powerful
126 * network-specific subroutine library ... that happens to do pretty
127 * much everything except custom framing and chip-specific stuff.
129 extern int usbnet_probe(struct usb_interface *, const struct usb_device_id *);
130 extern int usbnet_suspend (struct usb_interface *, pm_message_t );
131 extern int usbnet_resume (struct usb_interface *);
132 extern void usbnet_disconnect(struct usb_interface *);
135 /* Drivers that reuse some of the standard USB CDC infrastructure
136 * (notably, using multiple interfaces according to the CDC
137 * union descriptor) get some helper code.
140 struct usb_cdc_header_desc *header;
141 struct usb_cdc_union_desc *u;
142 struct usb_cdc_ether_desc *ether;
143 struct usb_interface *control;
144 struct usb_interface *data;
147 extern int usbnet_generic_cdc_bind (struct usbnet *, struct usb_interface *);
148 extern void usbnet_cdc_unbind (struct usbnet *, struct usb_interface *);
150 /* CDC and RNDIS support the same host-chosen packet filters for IN transfers */
151 #define DEFAULT_FILTER (USB_CDC_PACKET_TYPE_BROADCAST \
152 |USB_CDC_PACKET_TYPE_ALL_MULTICAST \
153 |USB_CDC_PACKET_TYPE_PROMISCUOUS \
154 |USB_CDC_PACKET_TYPE_DIRECTED)
157 /* we record the state for each of our queued skbs */
161 rx_start, rx_done, rx_cleanup
164 struct skb_data { /* skb->cb is one of these */
167 enum skb_state state;
172 extern int usbnet_get_endpoints(struct usbnet *, struct usb_interface *);
173 extern void usbnet_defer_kevent (struct usbnet *, int);
174 extern void usbnet_skb_return (struct usbnet *, struct sk_buff *);
175 extern void usbnet_unlink_rx_urbs(struct usbnet *);
177 extern int usbnet_get_settings (struct net_device *net, struct ethtool_cmd *cmd);
178 extern int usbnet_set_settings (struct net_device *net, struct ethtool_cmd *cmd);
179 extern u32 usbnet_get_link (struct net_device *net);
180 extern u32 usbnet_get_msglevel (struct net_device *);
181 extern void usbnet_set_msglevel (struct net_device *, u32);
182 extern void usbnet_get_drvinfo (struct net_device *, struct ethtool_drvinfo *);
183 extern int usbnet_nway_reset(struct net_device *net);
185 /* messaging support includes the interface name, so it must not be
186 * used before it has one ... notably, in minidriver bind() calls.
189 #define devdbg(usbnet, fmt, arg...) \
190 printk(KERN_DEBUG "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
192 #define devdbg(usbnet, fmt, arg...) do {} while(0)
195 #define deverr(usbnet, fmt, arg...) \
196 printk(KERN_ERR "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
197 #define devwarn(usbnet, fmt, arg...) \
198 printk(KERN_WARNING "%s: " fmt "\n" , (usbnet)->net->name , ## arg)
200 #define devinfo(usbnet, fmt, arg...) \
201 printk(KERN_INFO "%s: " fmt "\n" , (usbnet)->net->name , ## arg); \
204 #endif /* __USBNET_H */