spans_boundary (9) Linux Manual Page
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 [at] lxorguk.ukuu.org.uk>
- Author.