:orphan:

.. title:: CONFIG_LOG_BACKEND_NET_MAX_BUF_SIZE

.. kconfig:: CONFIG_LOG_BACKEND_NET_MAX_BUF_SIZE

CONFIG_LOG_BACKEND_NET_MAX_BUF_SIZE
###################################

*Max syslog message size*

Type: ``int``

Help
====

.. code-block:: none

    As each syslog message needs to fit to UDP packet, set this value
    so that messages are not truncated.
    The RFC 5426 recommends that for IPv4 the size is 480 octets and for
    IPv6 the size is 1180 octets. As each buffer will use RAM, the value
    should be selected so that typical messages will fit the buffer.

Direct dependencies
===================

\ :kconfig:`LOG_BACKEND_NET <CONFIG_LOG_BACKEND_NET>` && !\ :kconfig:`LOG_FRONTEND <CONFIG_LOG_FRONTEND>` && !\ :kconfig:`LOG_MINIMAL <CONFIG_LOG_MINIMAL>` && \ :kconfig:`LOG <CONFIG_LOG>`

*(Includes any dependencies from ifs and menus.)*

Defaults
========

- 1180 if \ :kconfig:`NET_IPV6 <CONFIG_NET_IPV6>`
- 480 if \ :kconfig:`NET_IPV4 <CONFIG_NET_IPV4>`
- 256

Kconfig definition
==================



At ``<Zephyr Subsystem>/logging/Kconfig.backends:262``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:44`` → ``<Zephyr Subsystem>/Kconfig:31`` → ``<Zephyr Subsystem>/logging/Kconfig:23``

Menu path: (Top) → Sub Systems and OS Services → Logging → Backends → Enable networking backend

.. code-block:: kconfig

    config LOG_BACKEND_NET_MAX_BUF_SIZE
    	int "Max syslog message size"
    	range 64 1180
    	default 1180 if NET_IPV6
    	default 480 if NET_IPV4
    	default 256
    	depends on LOG_BACKEND_NET && !LOG_FRONTEND && !LOG_MINIMAL && LOG
    	help
    	  As each syslog message needs to fit to UDP packet, set this value
    	  so that messages are not truncated.
    	  The RFC 5426 recommends that for IPv4 the size is 480 octets and for
    	  IPv6 the size is 1180 octets. As each buffer will use RAM, the value
    	  should be selected so that typical messages will fit the buffer.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*