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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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NAME="NET-SNMP-ECOS-CHANGES">Changes to eCos sources</H1
><P
>Small changes have been made in three areas:</P
><P
></P
><OL
TYPE="1"
><LI
><P
>Various hardware-specific ethernet drivers.</P
></LI
><LI
><P
>The generic ethernet device driver.</P
></LI
><LI
><P
>The OpenBSD TCP/IP networking package.</P
></LI
></OL
><P
>These changes were made in order to export information about the driver and
the network that the SNMP agent must report.  The changes were trivial in
the case of the network stack, since it was already SNMP-friendly.  The
generic ethernet device driver was re-organized to have an extensive header
file and to add a couple of APIs to extract statistics that the
hardware-specific device drivers keep within themselves.</P
><P
>There may be a performance hit for recording that data; disabling
a config option named something like
<TT
CLASS="LITERAL"
>CYGDBG_DEVS_ETH_xxxx_xxxx_KEEP_STATISTICS</TT
>
depending on the specific device driver will prevent that.</P
><P
>Not all platform ethernet device drivers export complete SNMP statistical
information; if the exported information is missing, SNMP will report zero
values for such data (in the dot3 MIB).</P
><P
>The interface chipset has an ID which is an OID; not all the latest greatest
devices are listed in the abailable database, so new chipsets may need to
be added to the client MIB, if not defined in those from UCD.</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			`>Changes to eCos sources</TITLE`
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15			`NAME="GENERATOR"`
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17			`"><LINK`
18			`REL="HOME"`
19			`TITLE="eCos Reference Manual"`
20			`HREF="ecos-ref.html"><LINK`
21			`REL="UP"`
22			`TITLE="SNMP for eCos"`
23			`HREF="net-snmp-ecos-port.html"><LINK`
24			`REL="PREVIOUS"`
25			`TITLE="MIBs supported"`
26			`HREF="net-snmp-mibs-supported.html"><LINK`
27			`REL="NEXT"`
28			`TITLE="Starting the SNMP Agent"`
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30			`><BODY`
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44			`CELLSPACING="0"`
45			`><TR`
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49			`>eCos Reference Manual</TH`
50			`></TR`
51			`><TR`
52			`><TD`
53			`WIDTH="10%"`
54			`ALIGN="left"`
55			`VALIGN="bottom"`
56			`><A`
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58			`ACCESSKEY="P"`
59			`>Prev</A`
60			`></TD`
61			`><TD`
62			`WIDTH="80%"`
63			`ALIGN="center"`
64			`VALIGN="bottom"`
65			`>Chapter 47. SNMP for <SPAN`
66			`CLASS="emphasis"`
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69			`>eCos</I`
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80			`></TD`
81			`></TR`
82			`></TABLE`
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84			`ALIGN="LEFT"`
85			`WIDTH="100%"></DIV`
86			`><DIV`
87			`CLASS="SECT1"`
88			`><H1`
89			`CLASS="SECT1"`
90			`><A`
91			`NAME="NET-SNMP-ECOS-CHANGES">Changes to eCos sources</H1`
92			`><P`
93			`>Small changes have been made in three areas:</P`
94			`><P`
95			`></P`
96			`><OL`
97			`TYPE="1"`
98			`><LI`
99			`><P`
100			`>Various hardware-specific ethernet drivers.</P`
101			`></LI`
102			`><LI`
103			`><P`
104			`>The generic ethernet device driver.</P`
105			`></LI`
106			`><LI`
107			`><P`
108			`>The OpenBSD TCP/IP networking package.</P`
109			`></LI`
110			`></OL`
111			`><P`
112			`>These changes were made in order to export information about the driver and`
113			`the network that the SNMP agent must report. The changes were trivial in`
114			`the case of the network stack, since it was already SNMP-friendly. The`
115			`generic ethernet device driver was re-organized to have an extensive header`
116			`file and to add a couple of APIs to extract statistics that the`
117			`hardware-specific device drivers keep within themselves.</P`
118			`><P`
119			`>There may be a performance hit for recording that data; disabling`
120			`a config option named something like`
121			`<TT`
122			`CLASS="LITERAL"`
123			`>CYGDBG_DEVS_ETH_xxxx_xxxx_KEEP_STATISTICS</TT`
124			`>`
125			`depending on the specific device driver will prevent that.</P`
126			`><P`
127			`>Not all platform ethernet device drivers export complete SNMP statistical`
128			`information; if the exported information is missing, SNMP will report zero`
129			`values for such data (in the dot3 MIB).</P`
130			`><P`
131			`>The interface chipset has an ID which is an OID; not all the latest greatest`
132			`devices are listed in the abailable database, so new chipsets may need to`
133			`be added to the client MIB, if not defined in those from UCD.</P`
134			`></DIV`
135			`><DIV`
136			`CLASS="NAVFOOTER"`
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153			`>Prev</A`
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162			`>Home</A`
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171			`>Next</A`
172			`></TD`
173			`></TR`
174			`><TR`
175			`><TD`
176			`WIDTH="33%"`
177			`ALIGN="left"`
178			`VALIGN="top"`
179			`>MIBs supported</TD`
180			`><TD`
181			`WIDTH="34%"`
182			`ALIGN="center"`
183			`VALIGN="top"`
184			`><A`
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186			`ACCESSKEY="U"`
187			`>Up</A`
188			`></TD`
189			`><TD`
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191			`ALIGN="right"`
192			`VALIGN="top"`
193			`>Starting the SNMP Agent</TD`
194			`></TR`
195			`></TABLE`
196			`></DIV`
197			`></BODY`
198			`></HTML`
199			`>`

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[/] [openrisc/] [trunk/] [rtos/] [ecos-2.0/] [doc/] [html/] [ref/] [net-snmp-ecos-changes.html] - Blame information for rev 232