'\" t
.\"     Title: spans_boundary
.\"    Author: 
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Internal Functions
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "SPANS_BOUNDARY" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Internal Functions"
.\" -----------------------------------------------------------------
.\" * Define some portability stuff
.\" -----------------------------------------------------------------
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.\" http://bugs.debian.org/507673
.\" http://lists.gnu.org/archive/html/groff/2009-02/msg00013.html
.\" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.ie \n(.g .ds Aq \(aq
.el       .ds Aq '
.\" -----------------------------------------------------------------
.\" * set default formatting
.\" -----------------------------------------------------------------
.\" disable hyphenation
.nh
.\" disable justification (adjust text to left margin only)
.ad l
.\" -----------------------------------------------------------------
.\" * MAIN CONTENT STARTS HERE *
.\" -----------------------------------------------------------------
.SH "NAME"
spans_boundary \- Check a packet can be ISA DMA\*(Aqd
.SH "SYNOPSIS"
.HP \w'int\ spans_boundary('u
.BI "int spans_boundary(struct\ sk_buff\ *\ " "skb" ");"
.SH "ARGUMENTS"
.PP
\fIskb\fR
.RS 4
The buffer to check
.RE
.SH "DESCRIPTION"
.PP
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\&.
.SH "AUTHOR"
.PP
\fBAlan Cox\fR <\&alan@lxorguk.ukuu.org.uk\&>
.RS 4
Author.
.RE
.SH "COPYRIGHT"
.br