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usbnet & cdc-ether: Autosuspend for online devices

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Using remote wakeup and delayed transmission to allow
online device to go into usb autosuspend.
Minimal alternate support for devices that don't support
remote wakeup.

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Oliver Neukum
2009-12-03 15:31:18 -08:00
committed by David S. Miller
parent 7f51579027
commit 69ee472f27
3 changed files with 142 additions and 29 deletions
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6
include/linux/usb/usbnet.h
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@@ -55,6 +55,7 @@ struct usbnet {
struct sk_buff_head done;
struct sk_buff_head rxq_pause;
struct urb *interrupt;
struct usb_anchor deferred;
struct tasklet_struct bh;
struct work_struct kevent;
@@ -65,6 +66,8 @@ struct usbnet {
# define EVENT_STS_SPLIT 3
# define EVENT_LINK_RESET 4
# define EVENT_RX_PAUSED 5
# define EVENT_DEV_WAKING 6
# define EVENT_DEV_ASLEEP 7
};
static inline struct usb_driver *driver_of(struct usb_interface *intf)
@@ -109,6 +112,9 @@ struct driver_info {
/* see if peer is connected ... can sleep */
int (*check_connect)(struct usbnet *);
/* (dis)activate runtime power management */
int (*manage_power)(struct usbnet *, int);
/* for status polling */
void (*status)(struct usbnet *, struct urb *);