GENERIC_PIPE_BUF_CON(9) pipes API GENERIC_PIPE_BUF_CON(9)NAME
generic_pipe_buf_confirm - verify contents of the pipe buffer
SYNOPSIS
int generic_pipe_buf_confirm(struct pipe_inode_info * info, struct pipe_buffer * buf);
ARGUMENTS
info
the pipe that the buffer belongs to
buf
the buffer to confirm
DESCRIPTION
This function does nothing, because the generic pipe code uses pages that are always good when inserted into the pipe.
COPYRIGHT Kernel Hackers Manual 2.6. July 2010 GENERIC_PIPE_BUF_CON(9)
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USB_FILL_INT_URB(9) Host-Side Data Types and Macro USB_FILL_INT_URB(9)NAME
usb_fill_int_urb - macro to help initialize a interrupt urb
SYNOPSIS
void usb_fill_int_urb(struct urb * urb, struct usb_device * dev, unsigned int pipe, void * transfer_buffer, int buffer_length,
usb_complete_t complete_fn, void * context, int interval);
ARGUMENTS
urb
pointer to the urb to initialize.
dev
pointer to the struct usb_device for this urb.
pipe
the endpoint pipe
transfer_buffer
pointer to the transfer buffer
buffer_length
length of the transfer buffer
complete_fn
pointer to the usb_complete_t function
context
what to set the urb context to.
interval
what to set the urb interval to, encoded like the endpoint descriptor's bInterval value.
DESCRIPTION
Initializes a interrupt urb with the proper information needed to submit it to a device.
Note that High Speed and SuperSpeed interrupt endpoints use a logarithmic encoding of the endpoint interval, and express polling intervals
in microframes (eight per millisecond) rather than in frames (one per millisecond).
Wireless USB also uses the logarithmic encoding, but specifies it in units of 128us instead of 125us. For Wireless USB devices, the
interval is passed through to the host controller, rather than being translated into microframe units.
COPYRIGHT Kernel Hackers Manual 3.10 June 2014 USB_FILL_INT_URB(9)
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