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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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><A
NAME="TCPIP-OPENBSD-TCPIP-APIS">Chapter 44. APIs</H1
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
><A
HREF="tcpip-openbsd-tcpip-apis.html#TCPIP-OPENBSD-STANDARD-NETWORKING-API"
>Standard networking</A
></DT
><DT
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HREF="tcpip-openbsd-enhanced-select.html"
>Enhanced Select()</A
></DT
></DL
></DIV
><DIV
CLASS="SECT1"
><H1
CLASS="SECT1"
><A
NAME="TCPIP-OPENBSD-STANDARD-NETWORKING-API">Standard networking</H1
><P
>The APIs for the standard networking calls such as
<TT
CLASS="FUNCTION"
>socket()</TT
>, <TT
CLASS="FUNCTION"
>recv()</TT
> and so on, are
in header files relative to the top-level
include directory, within the standard subdirectories as conventionally
found in <TT
CLASS="FILENAME"
>/usr/include</TT
>.  For example:
<TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
> install/include/arpa/tftp.h
 install/include/netinet/tcpip.h
 install/include/sys/socket.h
 install/include/sys/socketvar.h
 install/include/sys/sockio.h</PRE
></TD
></TR
></TABLE
></P
><P
><TT
CLASS="FILENAME"
>network.h</TT
> at the top level
defines various extensions, for example the API
<TT
CLASS="FUNCTION"
>init_all_network_interfaces(void)</TT
>
described
above.  We advise including <TT
CLASS="FILENAME"
>network.h</TT
> whether
you use these features or not.</P
><P
>In general, using the networking code may require definition
of two symbols: _KERNEL and __ECOS.  _KERNEL
is not normally required; __ECOS is normally required.
So add this to your compile lines for files which use the network
stack:</P
><TABLE
BORDER="5"
BGCOLOR="#E0E0F0"
WIDTH="70%"
><TR
><TD
><PRE
CLASS="PROGRAMLISTING"
>       -D__ECOS</PRE
></TD
></TR
></TABLE
><P
>To expand a little, it&#8217;s like this because this is
a port of a standard distribution external to Red Hat.  One goal
is to perturb the sources as little as possible, so that upgrading
and maintenance from the external distribution is simplified.  The __ECOS
symbol marks out Red Hat&#8217;s additions in making the port.
The _KERNEL symbol is traditional UNIX practice: it distinguishes
a compilation which is to be linked into the kernel from one which
is part of an application.  eCos applications are fully linked,
so this distinction does not apply.  _KERNEL can however
be used to control the visibility of the internals of the stack,
so depending on what features your application uses, it may or may
not be necessary.</P
><P
>The include file <TT
CLASS="FILENAME"
>network.h</TT
> undefines _KERNEL
unconditionally, to provide an application-like compilation environment.
If you were writing code which, for example,
enumerates the stack&#8217;s internal
structures, that is a kernel-like compilation environment, so you
would need to define _KERNEL (in addition to __ECOS)
and avoid including <TT
CLASS="FILENAME"
>network.h</TT
>.</P
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>

Line No.	Rev	Author	Line
1	28	unneback	`<!-- Copyright (C) 2003 Red Hat, Inc. -->`
2			`<!-- This material may be distributed only subject to the terms -->`
3			`<!-- and conditions set forth in the Open Publication License, v1.0 -->`
4			`<!-- or later (the latest version is presently available at -->`
5			`<!-- http://www.opencontent.org/openpub/). -->`
6			`<!-- Distribution of the work or derivative of the work in any -->`
7			`<!-- standard (paper) book form is prohibited unless prior -->`
8			`<!-- permission is obtained from the copyright holder. -->`
9			`<HTML`
10			`><HEAD`
11			`><TITLE`
12			`>APIs</TITLE`
13			`><meta name="MSSmartTagsPreventParsing" content="TRUE">`
14			`<META`
15			`NAME="GENERATOR"`
16			`CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+`
17			`"><LINK`
18			`REL="HOME"`
19			`TITLE="eCos Reference Manual"`
20			`HREF="ecos-ref.html"><LINK`
21			`REL="UP"`
22			`TITLE="OpenBSD TCP/IP Stack port for eCos"`
23			`HREF="tcpip-openbsd.html"><LINK`
24			`REL="PREVIOUS"`
25			`TITLE="Building the Network Stack"`
26			`HREF="tcpip-openbsd-building-the-network-stack.html"><LINK`
27			`REL="NEXT"`
28			`TITLE="Enhanced Select()"`
29			`HREF="tcpip-openbsd-enhanced-select.html"></HEAD`
30			`><BODY`
31			`CLASS="CHAPTER"`
32			`BGCOLOR="#FFFFFF"`
33			`TEXT="#000000"`
34			`LINK="#0000FF"`
35			`VLINK="#840084"`
36			`ALINK="#0000FF"`
37			`><DIV`
38			`CLASS="NAVHEADER"`
39			`><TABLE`
40			`SUMMARY="Header navigation table"`
41			`WIDTH="100%"`
42			`BORDER="0"`
43			`CELLPADDING="0"`
44			`CELLSPACING="0"`
45			`><TR`
46			`><TH`
47			`COLSPAN="3"`
48			`ALIGN="center"`
49			`>eCos Reference Manual</TH`
50			`></TR`
51			`><TR`
52			`><TD`
53			`WIDTH="10%"`
54			`ALIGN="left"`
55			`VALIGN="bottom"`
56			`><A`
57			`HREF="tcpip-openbsd-building-the-network-stack.html"`
58			`ACCESSKEY="P"`
59			`>Prev</A`
60			`></TD`
61			`><TD`
62			`WIDTH="80%"`
63			`ALIGN="center"`
64			`VALIGN="bottom"`
65			`></TD`
66			`><TD`
67			`WIDTH="10%"`
68			`ALIGN="right"`
69			`VALIGN="bottom"`
70			`><A`
71			`HREF="tcpip-openbsd-enhanced-select.html"`
72			`ACCESSKEY="N"`
73			`>Next</A`
74			`></TD`
75			`></TR`
76			`></TABLE`
77			`><HR`
78			`ALIGN="LEFT"`
79			`WIDTH="100%"></DIV`
80			`><DIV`
81			`CLASS="CHAPTER"`
82			`><H1`
83			`><A`
84			`NAME="TCPIP-OPENBSD-TCPIP-APIS">Chapter 44. APIs</H1`
85			`><DIV`
86			`CLASS="TOC"`
87			`><DL`
88			`><DT`
89			`><B`
90			`>Table of Contents</B`
91			`></DT`
92			`><DT`
93			`><A`
94			`HREF="tcpip-openbsd-tcpip-apis.html#TCPIP-OPENBSD-STANDARD-NETWORKING-API"`
95			`>Standard networking</A`
96			`></DT`
97			`><DT`
98			`><A`
99			`HREF="tcpip-openbsd-enhanced-select.html"`
100			`>Enhanced Select()</A`
101			`></DT`
102			`></DL`
103			`></DIV`
104			`><DIV`
105			`CLASS="SECT1"`
106			`><H1`
107			`CLASS="SECT1"`
108			`><A`
109			`NAME="TCPIP-OPENBSD-STANDARD-NETWORKING-API">Standard networking</H1`
110			`><P`
111			`>The APIs for the standard networking calls such as`
112			`<TT`
113			`CLASS="FUNCTION"`
114			`>socket()</TT`
115			`>, <TT`
116			`CLASS="FUNCTION"`
117			`>recv()</TT`
118			`> and so on, are`
119			`in header files relative to the top-level`
120			`include directory, within the standard subdirectories as conventionally`
121			`found in <TT`
122			`CLASS="FILENAME"`
123			`>/usr/include</TT`
124			`>. For example:`
125			`<TABLE`
126			`BORDER="5"`
127			`BGCOLOR="#E0E0F0"`
128			`WIDTH="70%"`
129			`><TR`
130			`><TD`
131			`><PRE`
132			`CLASS="PROGRAMLISTING"`
133			`> install/include/arpa/tftp.h`
134			`install/include/netinet/tcpip.h`
135			`install/include/sys/socket.h`
136			`install/include/sys/socketvar.h`
137			`install/include/sys/sockio.h</PRE`
138			`></TD`
139			`></TR`
140			`></TABLE`
141			`></P`
142			`><P`
143			`><TT`
144			`CLASS="FILENAME"`
145			`>network.h</TT`
146			`> at the top level`
147			`defines various extensions, for example the API`
148			`<TT`
149			`CLASS="FUNCTION"`
150			`>init_all_network_interfaces(void)</TT`
151			`>`
152			`described`
153			`above. We advise including <TT`
154			`CLASS="FILENAME"`
155			`>network.h</TT`
156			`> whether`
157			`you use these features or not.</P`
158			`><P`
159			`>In general, using the networking code may require definition`
160			`of two symbols: _KERNEL and __ECOS. _KERNEL`
161			`is not normally required; __ECOS is normally required.`
162			`So add this to your compile lines for files which use the network`
163			`stack:</P`
164			`><TABLE`
165			`BORDER="5"`
166			`BGCOLOR="#E0E0F0"`
167			`WIDTH="70%"`
168			`><TR`
169			`><TD`
170			`><PRE`
171			`CLASS="PROGRAMLISTING"`
172			`> -D__ECOS</PRE`
173			`></TD`
174			`></TR`
175			`></TABLE`
176			`><P`
177			`>To expand a little, it’s like this because this is`
178			`a port of a standard distribution external to Red Hat. One goal`
179			`is to perturb the sources as little as possible, so that upgrading`
180			`and maintenance from the external distribution is simplified. The __ECOS`
181			`symbol marks out Red Hat’s additions in making the port.`
182			`The _KERNEL symbol is traditional UNIX practice: it distinguishes`
183			`a compilation which is to be linked into the kernel from one which`
184			`is part of an application. eCos applications are fully linked,`
185			`so this distinction does not apply. _KERNEL can however`
186			`be used to control the visibility of the internals of the stack,`
187			`so depending on what features your application uses, it may or may`
188			`not be necessary.</P`
189			`><P`
190			`>The include file <TT`
191			`CLASS="FILENAME"`
192			`>network.h</TT`
193			`> undefines _KERNEL`
194			`unconditionally, to provide an application-like compilation environment.`
195			`If you were writing code which, for example,`
196			`enumerates the stack’s internal`
197			`structures, that is a kernel-like compilation environment, so you`
198			`would need to define _KERNEL (in addition to __ECOS)`
199			`and avoid including <TT`
200			`CLASS="FILENAME"`
201			`>network.h</TT`
202			`>.</P`
203			`></DIV`
204			`></DIV`
205			`><DIV`
206			`CLASS="NAVFOOTER"`
207			`><HR`
208			`ALIGN="LEFT"`
209			`WIDTH="100%"><TABLE`
210			`SUMMARY="Footer navigation table"`
211			`WIDTH="100%"`
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213			`CELLPADDING="0"`
214			`CELLSPACING="0"`
215			`><TR`
216			`><TD`
217			`WIDTH="33%"`
218			`ALIGN="left"`
219			`VALIGN="top"`
220			`><A`
221			`HREF="tcpip-openbsd-building-the-network-stack.html"`
222			`ACCESSKEY="P"`
223			`>Prev</A`
224			`></TD`
225			`><TD`
226			`WIDTH="34%"`
227			`ALIGN="center"`
228			`VALIGN="top"`
229			`><A`
230			`HREF="ecos-ref.html"`
231			`ACCESSKEY="H"`
232			`>Home</A`
233			`></TD`
234			`><TD`
235			`WIDTH="33%"`
236			`ALIGN="right"`
237			`VALIGN="top"`
238			`><A`
239			`HREF="tcpip-openbsd-enhanced-select.html"`
240			`ACCESSKEY="N"`
241			`>Next</A`
242			`></TD`
243			`></TR`
244			`><TR`
245			`><TD`
246			`WIDTH="33%"`
247			`ALIGN="left"`
248			`VALIGN="top"`
249			`>Building the Network Stack</TD`
250			`><TD`
251			`WIDTH="34%"`
252			`ALIGN="center"`
253			`VALIGN="top"`
254			`><A`
255			`HREF="tcpip-openbsd.html"`
256			`ACCESSKEY="U"`
257			`>Up</A`
258			`></TD`
259			`><TD`
260			`WIDTH="33%"`
261			`ALIGN="right"`
262			`VALIGN="top"`
263			`>Enhanced Select()</TD`
264			`></TR`
265			`></TABLE`
266			`></DIV`
267			`></BODY`
268			`></HTML`
269			`>`

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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [doc/] [html/] [ref/] [tcpip-openbsd-tcpip-apis.html] - Blame information for rev 593