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SNMP agent rewrite

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- SNMPv2c support
  - Greatly reduced RAM usage, no memory pools any more
  - API cleanup
  - MIB2 is separated from SNMP stack
  - Support for multiple MIBs (snmp_set_mibs call) - e.g. for private MIB
  - Improved MIB2 implementation (tcpConnTable etc.)
  - Redesigned simple and generic API for MIB implementation
  - Comfortable node types for scalar arrays and tables
  - Counter64, bit and truthvalue datatype support
  - Callbacks for SNMP writes
  - Runs on two APIs: RAW and netconn
  - Async API is gone - the stack now supports netconn API instead,
    so blocking operations can be done in MIB calls.
    SNMP runs in a worker thread when netconn API is used.
  - Simplified thread sync support for MIBs - useful when MIBs
    need to access variables shared with other threads without locking
    (used in MIB2 to access lwIP stats from lwIP thread)

Currently in work:
  - Traps rewrite
  - MIB compiler
This commit is contained in:
Dirk Ziegelmeier
2015-12-26 11:43:29 +01:00
parent 0178d1d2ee
commit 7b946fa9b1
32 changed files with 8034 additions and 8176 deletions
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30
src/apps/snmp/README Normal file
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lwIP SNMPv2c agent
==================
Based on SNMP stack written by Christiaan Simons <christiaan.simons@axon.tv>
Rewritten by Martin Hentschel <info@cl-soft.de> and
Dirk Ziegelmeier <dziegel@gmx.de>
Changes:
- SNMPv2c support
- Greatly reduced RAM usage, no memory pools any more
- API cleanup
- MIB2 is separated from SNMP stack
- Support for multiple MIBs (snmp_set_mibs call) - e.g. for private MIB
- Improved MIB2 implementation (tcpConnTable etc.)
- Redesigned simple and generic API for MIB implementation
- Comfortable node types for scalar arrays and tables
- Counter64, bit and truthvalue datatype support
- Callbacks for SNMP writes
- Runs on two APIs: RAW and netconn
- Async API is gone - the stack now supports netconn API instead,
so blocking operations can be done in MIB calls.
SNMP runs in a worker thread when netconn API is used.
- Simplified thread sync support for MIBs - useful when MIBs
need to access variables shared with other threads without locking
(used in MIB2 to access lwIP stats from lwIP thread)
Currently in work:
- Traps rewrite
- MIB compiler