SPANS_BOUNDARY(9) Internal Functions SPANS_BOUNDARY(9)NAME
spans_boundary - Check a packet can be ISA DMA´d
SYNOPSIS
int spans_boundary(struct sk_buff * skb);
ARGUMENTS
skb
The buffer to check
DESCRIPTION
Returns true if the buffer cross a DMA boundary on a PC. The poor thing
can only DMA within a 64K block not across the edges of it.
AUTHOR
Alan Cox <alan@lxorguk.ukuu.org.uk>
Author.
COPYRIGHTKernel Hackers Manual 2.6. November 2013 SPANS_BOUNDARY(9)