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Ulf Magnusson 92ef8582b9 Kconfig: Remove redundant $(ZEPHYR_BASE) from 'source's 
The $srctree environment variable gives the path relative to which
'(o)source' statements work (the current directory is used if $srctree
is unset). It is set to $ZEPHYR_BASE in cmake/kconfig.cmake, so there's
no need to qualify the source of Kconfig.zephyr in sample Kconfig files
(or in external projects).

All 'source's in Zephyr assume that the Zephyr root directory is used as
the srctree as well, and would break otherwise.

Remove the $(ZEPHYR_BASE)s to make it clearer that all 'source'
statements work relative to the Zephyr root. There was some user
confusion on IRC.

Also explain how things work in the documentation.

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2018-10-10 11:28:27 -05:00
..
src samples: net: stats: Convert to new logging system 2018-10-04 14:13:57 +03:00
CMakeLists.txt cmake: Remove unnecessary KCONFIG_ROOT configuration 2018-09-21 13:37:21 -04:00
Kconfig Kconfig: Remove redundant $(ZEPHYR_BASE) from 'source's 2018-10-10 11:28:27 -05:00
prj.conf samples: net: stats: Convert to new logging system 2018-10-04 14:13:57 +03:00
README.rst sample: net: stats: Example how to use net_mgmt for statistics 2018-04-10 13:29:39 +03:00
sample.yaml sample: net: stats: Example how to use net_mgmt for statistics 2018-04-10 13:29:39 +03:00

README.rst 

.. _net_stats-sample:

Network Statistics Sample Application
#####################################

Overview
********

This sample shows how to query (and display) network statistics from a user
application.

The source code for this sample application can be found at:
:file:`samples/net/stats`.

Requirements
************

- :ref:`networking_with_qemu`

Building and Running
********************

A good way to run this sample application is with QEMU as described in
:ref:`networking_with_qemu`.

Follow these steps to build the network statistics sample application:

.. zephyr-app-commands::
   :zephyr-app: samples/net/stats
   :board: <board to use>
   :conf: prj.conf
   :goals: build
   :compact:

If everything is configured correctly, the application will periodically print
current network statistics to the console.

.. code-block:: console

    Global network statistics
    IPv6 recv      27	sent	8	drop	0	forwarded	0
    IPv6 ND recv   2	sent	5	drop	2
    IPv6 MLD recv  0	sent	3	drop	0
    IPv4 recv      20	sent	0	drop	20	forwarded	0
    IP vhlerr      0	hblener	0	lblener	0
    IP fragerr     0	chkerr	0	protoer	0
    ICMP recv      15	sent	3	drop	13
    ICMP typeer    0	chkerr	0
    UDP recv       0	sent	0	drop	30
    UDP chkerr     0
    TCP bytes recv 0	sent	0
    TCP seg recv   0	sent	0	drop	0
    TCP seg resent 0	chkerr	0	ackerr	0
    TCP seg rsterr 0	rst	0	re-xmit	0
    TCP conn drop  0	connrst	0
    Bytes received 7056
    Bytes sent     564
    Processing err 1