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 AT lxorguk.uk>
           Author.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                         SPANS_BOUNDARY(9)