zephyr

History

Keith Packard 0b90fd5adf samples, tests, boards: Switch main return type from void to int As both C and C++ standards require applications running under an OS to return 'int', adapt that for Zephyr to align with those standard. This also eliminates errors when building with clang when not using -ffreestanding, and reduces the need for compiler flags to silence warnings for both clang and gcc. Most of these changes were automated using coccinelle with the following script: @@ @@ - void + int main(...) { ... - return; + return 0; ... } Approximately 40 files had to be edited by hand as coccinelle was unable to fix them. Signed-off-by: Keith Packard <keithp@keithp.com>		2023-04-14 07:49:41 +09:00
..
src	samples, tests, boards: Switch main return type from void to int	2023-04-14 07:49:41 +09:00
CMakeLists.txt
Kconfig
prj.conf	samples: net: sockets: packet: Wait for the interface to come up	2022-08-03 11:11:55 +02:00
README.rst
sample.yaml	tests/samples: use integration_plaforms in more tests/samples	2022-11-29 16:03:23 +01:00

README.rst

.. _packet-socket-sample:

Packet socket sample
####################

Overview
********

This sample is a simple packet socket application showing usage
of packet sockets over Ethernet. The sample prints every packet
received, and sends a dummy packet every 5 seconds.
The Zephyr network subsystem does not touch any of the headers
(L2, L3, etc.).

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

When the application is run, it opens a packet socket and prints
the length of the packet it receives. After that it sends a dummy
packet every 5 seconds. You can use Wireshark to observe these
sent and received packets.

See the `net-tools`_ project for more details.

This sample can be built and executed on QEMU or native_posix board as
described in :ref:`networking_with_host`.

.. _`net-tools`: https://github.com/zephyrproject-rtos/net-tools