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<!DOCTYPE erlref SYSTEM "erlref.dtd">
<erlref>
<header>
<copyright>
<year>2004</year><year>2009</year>
<holder>Ericsson AB. All Rights Reserved.</holder>
</copyright>
<legalnotice>
The contents of this file are subject to the Erlang Public License,
Version 1.1, (the "License"); you may not use this file except in
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Software distributed under the License is distributed on an "AS IS"
basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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under the License.
</legalnotice>
<title>snmpm_network_interface</title>
<prepared></prepared>
<responsible></responsible>
<docno></docno>
<approved></approved>
<checked></checked>
<date></date>
<rev></rev>
<file>snmpm_network_interface.xml</file>
</header>
<module>snmpm_network_interface</module>
<modulesummary>Behaviour module for the SNMP manager network interface.</modulesummary>
<description>
<p>This module defines the behaviour of the manager network
interface. A <c>snmpm_network_interface</c> compliant module
must export the following functions: </p>
<list type="bulleted">
<item>
<p><seealso marker="#start_link">start_link/2</seealso></p>
</item>
<item>
<p><seealso marker="#stop">stop/1</seealso></p>
</item>
<item>
<p><seealso marker="#send_pdu">send_pdu/7</seealso></p>
</item>
<item>
<p><seealso marker="#inform_response">inform_response/4</seealso></p>
</item>
<item>
<p><seealso marker="#note_store">note_store/2</seealso></p>
</item>
<item>
<p><seealso marker="#info">info/1</seealso></p>
</item>
<item>
<p><seealso marker="#get_log_type">get_log_type/1</seealso></p>
</item>
<item>
<p><seealso marker="#set_log_type">set_log_type/2</seealso></p>
</item>
<item>
<p><seealso marker="#verbosity">verbosity/2</seealso></p>
</item>
</list>
<p>The semantics of them and their exact signatures are explained
below. </p>
<marker id="start_link"></marker>
</description>
<funcs>
<func>
<name>start_link(Server, NoteStore) -> {ok, Pid} | {error, Reason}</name>
<fsummary>Start-link the network interface process</fsummary>
<type>
<v>Server = pid()</v>
<v>NoteStore = pid()</v>
</type>
<desc>
<p>Start-link the network interface process.</p>
<p><c>Server</c> is the pid of the managing process.</p>
<p><c>NoteStore</c> is the pid of the note-store process.</p>
<marker id="stop"></marker>
</desc>
</func>
<func>
<name>stop(Pid) -> void()</name>
<fsummary>Stop the network interface process</fsummary>
<type>
<v>Pid = pid()</v>
</type>
<desc>
<p>Stop the network interface process.</p>
<marker id="send_pdu"></marker>
</desc>
</func>
<func>
<name>send_pdu(Pid, Pdu, Vsn, MsgData, Addr, Port, ExtraInfo) -> void()</name>
<fsummary>Request the network interface process to send this pdu</fsummary>
<type>
<v>Pid = pid()</v>
<v>Pdu = pdu()</v>
<v>Vsn = 'version-1' | 'version-2' | 'version-3'</v>
<v>MsgData = term()</v>
<v>Addr = address()</v>
<v>Port = integer()</v>
<v>ExtraInfo = term()</v>
</type>
<desc>
<p>Request the network interface process (<c>Pid</c>) to send
this pdu (<c>Pdu</c>).</p>
<p><c>ExtraInfo</c> is some opaque data that is passed to the
net-if process. It originates from the <c>ExtraInfo</c>
parameter in the calls to the
<seealso marker="snmpm#sync_get">synchronous get-request</seealso>,
<seealso marker="snmpm#async_get">asynchronous get-request</seealso>,
<seealso marker="snmpm#sync_get_next">synchronous get-next-request</seealso>,
<seealso marker="snmpm#async_get_next">asynchronous get-next-request</seealso>,
<seealso marker="snmpm#sync_set">synchronous set-request</seealso>
and
<seealso marker="snmpm#async_set">asynchronous set-request</seealso>
functions.
Whether the net-if process chooses
to use this is implementation dependent. The net-if process
included in this application ignores it. </p>
<marker id="inform_response"></marker>
</desc>
</func>
<func>
<name>inform_response(Pid, Ref, Addr, Port) -> void()</name>
<fsummary>Send the inform-request ack</fsummary>
<type>
<v>Pid = pid()</v>
<v>Ref = term()</v>
<v>Addr = address()</v>
<v>Port = integer()</v>
</type>
<desc>
<p>Instruct the network interface process to send the response
(acknowledgment) to an inform-request.</p>
<p><c>Ref</c> is something that can be used to identify the
inform-request, e.g. request-id of the inform-request.</p>
<p><c>Addr</c> and <c>Port</c> identifies the agent, from
which the inform-request originated.</p>
<marker id="note_store"></marker>
</desc>
</func>
<func>
<name>note_store(Pid, NoteStore) -> void()</name>
<fsummary>Change the verbosity of the network interface process</fsummary>
<type>
<v>Pid = pid()</v>
<v>NoteStore = pid()</v>
</type>
<desc>
<p>Change the pid of the note-store process.
This is used when the server re-starts the note_store
(e.g. after a crach).</p>
<marker id="info"></marker>
</desc>
</func>
<func>
<name>info(Pid) -> [{Key, Value}]</name>
<fsummary>Return information about the running network interface process</fsummary>
<type>
<v>Pid = pid()</v>
</type>
<desc>
<p>The info returned is basically up to the implementer to decide.
The implementation provided by this application provides info about
memory allocation and various socket information.</p>
<p>The info returned by this function is returned together with other
info collected by the manager when the
<seealso marker="snmpm#info">info</seealso> function is called
(tagged with the key <c>net_if</c>).</p>
<marker id="verbosity"></marker>
</desc>
</func>
<func>
<name>verbosity(Pid, Verbosity) -> void()</name>
<fsummary>Change the verbosity of the network interface process</fsummary>
<type>
<v>Pid = pid()</v>
<v>Verbosity = verbosity()</v>
</type>
<desc>
<p>Change the verbosity of the network interface process.</p>
<marker id="get_log_type"></marker>
</desc>
</func>
<func>
<name>get_log_type(Pid) -> {ok, LogType} | {error, Reason}</name>
<fsummary>Get the Audit Trail Log type</fsummary>
<type>
<v>Pid = pid()</v>
<v>LogType = atl_type()</v>
<v>Reason = term()</v>
</type>
<desc>
<p>The Audit Trail Log is managed by the network interface process.
So, it is this process that has to return the actual log-type. </p>
<!--
<p>See
<seealso marker="snmpm#get_log_type">get_log_type</seealso>
for more info. </p>
-->
<marker id="set_log_type"></marker>
</desc>
</func>
<func>
<name>set_log_type(Pid, NewType) -> {ok, OldType} | {error, Reason}</name>
<fsummary>Change the Audit Trail Log type</fsummary>
<type>
<v>Pid = pid()</v>
<v>NewType = OldType = atl_type()</v>
<v>Reason = term()</v>
</type>
<desc>
<p>The Audit Trail Log is managed by the network interface process.
So, it is this process that has to do the actual changing of the
type. </p>
<p>See
<seealso marker="snmpm#set_log_type">set_log_type</seealso>
for more info. </p>
</desc>
</func>
</funcs>
</erlref>
