URL
https://opencores.org/ocsvn/openrisc/openrisc/trunk
Subversion Repositories openrisc
[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [doc/] [html/] [ref/] [net-common-support.html] - Rev 174
Compare with Previous | Blame | View Log
<!-- Copyright (C) 2003 Red Hat, Inc. -->
<!-- This material may be distributed only subject to the terms -->
<!-- and conditions set forth in the Open Publication License, v1.0 -->
<!-- or later (the latest version is presently available at -->
<!-- http://www.opencontent.org/openpub/). -->
<!-- Distribution of the work or derivative of the work in any -->
<!-- standard (paper) book form is prohibited unless prior -->
<!-- permission is obtained from the copyright holder. -->
<HTML
><HEAD
><TITLE
>Support Features</TITLE
><meta name="MSSmartTagsPreventParsing" content="TRUE">
<META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="HOME"
TITLE="eCos Reference Manual"
HREF="ecos-ref.html"><LINK
REL="UP"
TITLE="TCP/IP Stack Support for eCos"
HREF="net-common-tcpip.html"><LINK
REL="PREVIOUS"
TITLE="Maintenance Tools "
HREF="net-common-maintenance-tools.html"><LINK
REL="NEXT"
TITLE="DHCP"
HREF="net-common-dhcp.html"></HEAD
><BODY
CLASS="CHAPTER"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="NAVHEADER"
><TABLE
SUMMARY="Header navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TH
COLSPAN="3"
ALIGN="center"
>eCos Reference Manual</TH
></TR
><TR
><TD
WIDTH="10%"
ALIGN="left"
VALIGN="bottom"
><A
HREF="net-common-maintenance-tools.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="80%"
ALIGN="center"
VALIGN="bottom"
></TD
><TD
WIDTH="10%"
ALIGN="right"
VALIGN="bottom"
><A
HREF="net-common-dhcp.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
></TABLE
><HR
ALIGN="LEFT"
WIDTH="100%"></DIV
><DIV
CLASS="CHAPTER"
><H1
><A
NAME="NET-COMMON-SUPPORT">Chapter 37. Support Features</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="net-common-support.html#NET-COMMON-TFTP"
>TFTP</A
></DT
><DT
><A
HREF="net-common-dhcp.html"
>DHCP</A
></DT
></DL
></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="NET-COMMON-TFTP">TFTP</H1
><P
>The TFTP client and server are described in
<TT
CLASS="FILENAME"
>tftp_support.h</TT
>;
the client API is simple and can be easily understood by reading
<TT
CLASS="FILENAME"
>tftp_client_test.c</TT
>.</P
><P
>The server is more complex. It requires a filesystem implementation
to be supplied by the user, and attached to the tftp server by means
of a vector of function pointers:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>struct tftpd_fileops {
int (*open)(const char *, int);
int (*close)(int);
int (*write)(int, const void *, int);
int (*read)(int, void *, int);
};</PRE
></TD
></TR
></TABLE
><P
>These functions have the obvious semantics. The structure
describing the filesystem is an argument to the <TT
CLASS="FUNCTION"
>tftpd_start(int,
struct tftpd_fileops *);</TT
> call.
The first argument is the port to use for the server.</P
><P
>As discussed in the description of the tftp_server_test
above, an example filesystem is provided in
<TT
CLASS="FILENAME"
>net/common/<TT
CLASS="REPLACEABLE"
><I
>VERSION</I
></TT
>/src/tftp_dummy_file.c</TT
>
for
use by the tftp server test. The dummy filesystem is not a supported
part of the network stack, it exists purely for demonstration purposes.</P
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
WIDTH="100%"><TABLE
SUMMARY="Footer navigation table"
WIDTH="100%"
BORDER="0"
CELLPADDING="0"
CELLSPACING="0"
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
><A
HREF="net-common-maintenance-tools.html"
ACCESSKEY="P"
>Prev</A
></TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="ecos-ref.html"
ACCESSKEY="H"
>Home</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
><A
HREF="net-common-dhcp.html"
ACCESSKEY="N"
>Next</A
></TD
></TR
><TR
><TD
WIDTH="33%"
ALIGN="left"
VALIGN="top"
>Maintenance Tools</TD
><TD
WIDTH="34%"
ALIGN="center"
VALIGN="top"
><A
HREF="net-common-tcpip.html"
ACCESSKEY="U"
>Up</A
></TD
><TD
WIDTH="33%"
ALIGN="right"
VALIGN="top"
>DHCP</TD
></TR
></TABLE
></DIV
></BODY
></HTML
>