108 lines
2.3 KiB
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108 lines
2.3 KiB
HTML
Content-type: text/html
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<HTML><HEAD><TITLE>Manpage of IPSEC_SUBNETOF</TITLE>
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</HEAD><BODY>
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<H1>IPSEC_SUBNETOF</H1>
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Section: C Library Functions (3)<BR>Updated: 11 June 2001<BR><A HREF="#index">Index</A>
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<A HREF="http://localhost/cgi-bin/man/man2html">Return to Main Contents</A><HR>
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<A NAME="lbAB"> </A>
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<H2>NAME</H2>
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ipsec subnetof - given Internet address and subnet mask, return subnet number
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<BR>
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ipsec hostof - given Internet address and subnet mask, return host part
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<BR>
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ipsec broadcastof - given Internet address and subnet mask, return broadcast address
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<A NAME="lbAC"> </A>
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<H2>SYNOPSIS</H2>
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<B>#include <<A HREF="file:/usr/include/freeswan.h">freeswan.h</A>></B>
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<P>
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<B>struct in_addr subnetof(struct in_addr addr,</B>
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<BR>
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<B>struct in_addr mask);</B>
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<BR>
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<B>struct in_addr hostof(struct in_addr addr,</B>
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<BR>
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<B>struct in_addr mask);</B>
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<BR>
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<B>struct in_addr broadcastof(struct in_addr addr,</B>
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<BR>
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<B>struct in_addr mask);</B>
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<A NAME="lbAD"> </A>
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<H2>DESCRIPTION</H2>
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These functions are obsolete; see
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<I><A HREF="ipsec_networkof.3.html">ipsec_networkof</A></I>(3)
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for their replacements.
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<P>
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<I>Subnetof</I>
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takes an Internet
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<I>address</I>
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and a subnet
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<I>mask</I>
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and returns the network part of the address
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(all in network byte order).
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<I>Hostof</I>
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similarly returns the host part, and
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<I>broadcastof</I>
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returns the broadcast address (all-1s convention) for the network.
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<P>
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These functions are provided to hide the Internet bit-munging inside
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an API, in hopes of easing the eventual transition to IPv6.
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<A NAME="lbAE"> </A>
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<H2>SEE ALSO</H2>
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<A HREF="inet.3.html">inet</A>(3), <A HREF="ipsec_atosubnet.3.html">ipsec_atosubnet</A>(3)
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<A NAME="lbAF"> </A>
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<H2>HISTORY</H2>
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Written for the FreeS/WAN project by Henry Spencer.
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<A NAME="lbAG"> </A>
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<H2>BUGS</H2>
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Calling functions for this is more costly than doing it yourself.
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<P>
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<HR>
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<A NAME="index"> </A><H2>Index</H2>
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<DL>
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<DT><A HREF="#lbAB">NAME</A><DD>
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<DT><A HREF="#lbAC">SYNOPSIS</A><DD>
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<DT><A HREF="#lbAD">DESCRIPTION</A><DD>
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<DT><A HREF="#lbAE">SEE ALSO</A><DD>
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<DT><A HREF="#lbAF">HISTORY</A><DD>
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<DT><A HREF="#lbAG">BUGS</A><DD>
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</DL>
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<HR>
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This document was created by
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<A HREF="http://localhost/cgi-bin/man/man2html">man2html</A>,
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using the manual pages.<BR>
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Time: 21:40:17 GMT, November 11, 2003
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</BODY>
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</HTML>
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