1<html><head><meta http-equiv="Content-Type" content="text/html; charset=ANSI_X3.4-1968"><title>spans_boundary</title><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="Z8530 Programming Guide"><link rel="up" href="intfunctions.html" title="Chapter&#160;10.&#160;Internal Functions"><link rel="prev" href="API-z8530-rx-done.html" title="z8530_rx_done"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center"><span class="phrase">spans_boundary</span></th></tr><tr><td width="20%" align="left"><a accesskey="p" href="API-z8530-rx-done.html">Prev</a>&#160;</td><th width="60%" align="center">Chapter&#160;10.&#160;Internal Functions</th><td width="20%" align="right">&#160;</td></tr></table><hr></div><div class="refentry"><a name="API-spans-boundary"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>spans_boundary &#8212; 
2     Check a packet can be ISA DMA'd
3 </p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">int <b class="fsfunc">spans_boundary </b>(</code></td><td>struct sk_buff * <var class="pdparam">skb</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer">&#160;</div></div></div><div class="refsect1"><a name="idp1119530796"></a><h2>Arguments</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="parameter"><code>skb</code></em></span></dt><dd><p>
4     The buffer to check
5    </p></dd></dl></div></div><div class="refsect1"><a name="idp1119532364"></a><h2>Description</h2><p>
6   Returns true if the buffer cross a DMA boundary on a PC. The poor
7   thing can only DMA within a 64K block not across the edges of it.
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