spans_boundary (9) - Linux Man Pages

spans_boundary: Check a packet can be ISA DMA'd

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.ukuu.org.uk>

Author.

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