SNMP Manager Programmer's Guide

Reference Summary

SNMP Manager Programmer’s Guide–134249

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Packet Encoding and Decoding Functions

Managing the Encoded-Packet Buffer

Summary of Buffer Management Functions

Function Description

EBufferClean() Releases dynamically obtained memory for a buffer and calls

EBufferInitialize().

EBufferClone() Copies a buffer into a second buffer after dynamically

allocating memory for it, duplicating the source buffer’s

contents and descriptors.

EBufferInitialize() Initializes descriptors for a buffer that has no memory

allocated for it, setting them all to 0.

EBufferNext() Returns the value of next_bp, the buffer descriptor pointing to

the next unused byte in the buffer.

EBufferPreLoad() Sets up buffer descriptors for a buffer to which you have

already written information but have not initialized.

EBufferRemaining() Returns the value of remaining, the buffer descriptor

indicating the number of bytes still available in the buffer.

EBufferReset() Resets the buffer descriptors for a buffer already allocated;

start_bp and next_bp are set to point to the start of the buffer,

and the number of bytes allocated is assigned to

remaining.

EBufferSetup() Initializes descriptors for a buffer for which you have

allocated memory; start_bp and next_bp are set to point to

the start of the buffer, and the number of bytes allocated is

assigned to remaining.

EBufferStart() Returns the value of start_bp, the buffer descriptor pointing to

the first byte of interest.

EBufferUsed() Returns the number of used bytes in the buffer.

SNMP_memory_alloc() Dynamically allocates memory for the buffer.