Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.
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Tomasz Bursztyka 274db4f33d net/udp: Accept UDP packet with missing checksum
Having a checksum of zeros in UDP means "missing checksum" and is a
valid case as per RFC 768:

"An all zero transmitted checksum value means that the transmitter
generated no checksum (for debugging or for higher level protocols
that don't care)."

Such support is made possible by adding a new Kconfig option named
CONFIG_NET_UDP_MISSING_CHECKSUM.

However, that is valid only for IPv4. For IPv6, see the RFC 2460
section 8.1:

"Unlike IPv4, when UDP packets are originated by an IPv6 node, the UDP
checksum is not optional."

So the UDP checksum will always be verified in IPv6.

Fixes #16375

Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
2019-05-27 20:58:53 +08:00
.github/ISSUE_TEMPLATE templates: Update issue templates 2018-12-07 08:27:20 -05:00
.known-issues doc: introduce final structure 2019-02-05 07:04:40 -05:00
arch arch: arm: minor clean-up in interrupt stack size derivation 2019-05-25 17:59:07 -04:00
boards boards: disco_l475_iot1: create .dtsi connector file 2019-05-25 18:34:31 -04:00
cmake extensions.cmake: don't leak absolute paths in snippets-*.ld comment 2019-05-24 11:07:59 +02:00
doc doc: CMake: Locate Python executable before processing modules 2019-05-24 11:05:04 +02:00
drivers drivers: flash: flash_simulator: added max len param 2019-05-27 12:26:20 +02:00
dts soc: nxp: ke1xf: add I2C support 2019-05-24 09:51:10 -05:00
ext ext: mbedtls: Enable easy integration with POSIX API 2019-05-27 20:28:53 +08:00
include Bluetooth: extending API for OOB pairing 2019-05-27 13:50:46 +02:00
kernel kernel: remove redundant #ifdef CONFIG_MULTITHREADING 2019-05-24 13:12:55 -04:00
lib libc: minimal: Implement exit()/_exit() functions. 2019-05-23 09:27:59 -04:00
misc license: cleanup: add SPDX Apache-2.0 license identifier 2019-04-07 08:45:22 -04:00
samples stm32: Remove redundant I2C variant Kconfig symbols definitions 2019-05-24 22:29:51 -04:00
scripts scripts: west: Add reset-after-load argument to jlink runner 2019-05-25 10:01:30 -04:00
soc qmsi: set type to boolean when selecting QMSI 2019-05-24 15:10:16 -04:00
subsys net/udp: Accept UDP packet with missing checksum 2019-05-27 20:58:53 +08:00
tests tests: fs: nvs: unittest with corrupted sector close op 2019-05-27 12:26:20 +02:00
.checkpatch.conf scripts/checkpatch.pl: fix root dir detection and enable it 2019-05-22 12:40:20 -04:00
.clang-format clang-format: add support for clang-format 2018-11-19 09:31:44 -05:00
.codecov.yml
.editorconfig editorconfig: Set insert_final_newline true 2019-04-10 14:15:38 +02:00
.gitattributes
.gitignore gitignore: ignore IDE files 2018-11-21 15:05:07 +01:00
.gitlint gitlint: do not start with subsys: 2018-11-28 09:22:01 -08:00
.mailmap mailmap: add entry for ruuddw 2018-07-05 09:57:23 -04:00
.shippable.yml ci: send email to builds@ mailing list if master fails 2019-05-06 13:39:30 -04:00
.uncrustify.cfg uncrustify: Add a rule to remove space inside function argument 2018-10-16 09:50:03 -04:00
CMakeLists.txt cmake: Toolchain abstraction: Abstraction of implicit-int error flag 2019-05-22 15:28:07 +02:00
CODEOWNERS CODEOWNERS: Add code ownership for gen_relocate_app.py 2019-05-23 06:59:14 -04:00
CODE_OF_CONDUCT.md coc: move to markdown format 2019-01-24 15:37:15 -05:00
CONTRIBUTING.rst doc: Fixed a link in CONTRIBUTING.rst 2019-02-28 12:46:04 -08:00
Kconfig
Kconfig.zephyr linker: Port usage of custom-sections to use Cmake 2019-05-20 22:28:28 -04:00
LICENSE
Makefile doc: add clean target to Makefile 2019-02-05 16:58:14 -05:00
README.rst doc: add references to builds mailing list 2019-05-21 21:40:20 -04:00
VERSION release: Post-release patch level update 2019-04-16 15:50:31 -05:00
version.h.in cmake: explain BUILD_VERSION and KERNEL_VERSION_* 2019-05-09 11:52:05 +02:00
west.yml qmsi: move to a zephyr module 2019-05-22 09:28:56 -04:00
zephyr-env.cmd scripts: remove west from scripts/ 2019-01-29 10:15:01 +01:00
zephyr-env.sh env: ignore unset var 2019-05-20 09:26:31 -04:00

README.rst

.. raw:: html

   <a href="https://www.zephyrproject.org">
     <p align="center">
       <img src="doc/images/Zephyr-Project.png">
     </p>
   </a>

   <a href="https://bestpractices.coreinfrastructure.org/projects/74"><img
   src="https://bestpractices.coreinfrastructure.org/projects/74/badge"></a>
   <img
   src="https://api.shippable.com/projects/58ffb2b8baa5e307002e1d79/badge?branch=master">


The Zephyr Project is a scalable real-time operating system (RTOS) supporting
multiple hardware architectures, optimized for resource constrained devices,
and built with security in mind.

The Zephyr OS is based on a small-footprint kernel designed for use on
resource-constrained systems: from simple embedded environmental sensors and
LED wearables to sophisticated smart watches and IoT wireless gateways.

The Zephyr kernel supports multiple architectures, including ARM Cortex-M,
Intel x86, ARC, Nios II, Tensilica Xtensa, and RISC-V, and a large number of
`supported boards`_.

.. below included in doc/introduction/introduction.rst

.. start_include_here

Getting Started
***************

Welcome to Zephyr! See the `Introduction to Zephyr`_ for a high-level overview,
and the documentation's `Getting Started Guide`_ to start developing.

Community Support
*****************

Community support is provided via mailing lists and Slack; see the Resources
below for details.

Resources
*********

Here's a quick summary of resources to help you find your way around:

* **Help**: `Asking for Help Tips`_
* **Documentation**: http://docs.zephyrproject.org (`Getting Started Guide`_)
* **Source Code**: https://github.com/zephyrproject-rtos/zephyr is the main
  repository; https://elixir.bootlin.com/zephyr/latest/source contains a
  searchable index
* **Releases**: https://zephyrproject.org/developers/#downloads
* **Samples and example code**: see `Sample and Demo Code Examples`_
* **Mailing Lists**: users@lists.zephyrproject.org and
  devel@lists.zephyrproject.org are the main user and developer mailing lists,
  respectively. You can join the developer's list and search its archives at
  `Zephyr Development mailing list`_. The other `Zephyr mailing list
  subgroups`_ have their own archives and sign-up pages.
* **Nightly CI Build Status**: https://lists.zephyrproject.org/g/builds
  The builds@lists.zephyrproject.org mailing list archives the CI
  (shippable) nightly build results.
* **Chat**: Zephyr's Slack workspace is https://zephyrproject.slack.com.  Use
  this `Slack Invite`_ to register.
* **Contributing**: see the `Contribution Guide`_
* **Wiki**: `Zephyr GitHub wiki`_
* **Issues**: https://github.com/zephyrproject-rtos/zephyr/issues
* **Security Issues**: Email vulnerabilities@zephyrproject.org to report
  security issues; also see our `Security`_ documentation. Security issues are
  tracked separately at https://zephyrprojectsec.atlassian.net.
* **Zephyr Project Website**: https://zephyrproject.org

.. _Slack Invite: https://tinyurl.com/yarkuemx
.. _supported boards: http://docs.zephyrproject.org/latest/boards
.. _Zephyr Documentation: http://docs.zephyrproject.org
.. _Introduction to Zephyr: http://docs.zephyrproject.org/latest/introduction/index.html
.. _Getting Started Guide: http://docs.zephyrproject.org/latest/getting_started/index.html
.. _Contribution Guide: http://docs.zephyrproject.org/latest/contribute/index.html
.. _Zephyr GitHub wiki: https://github.com/zephyrproject-rtos/zephyr/wiki
.. _Zephyr Development mailing list: https://lists.zephyrproject.org/g/devel
.. _Zephyr mailing list subgroups: https://lists.zephyrproject.org/g/main/subgroups
.. _Sample and Demo Code Examples: http://docs.zephyrproject.org/latest/samples/index.html
.. _Security: http://docs.zephyrproject.org/latest/security/index.html
.. _Asking for Help Tips: https://docs.zephyrproject.org/latest/guides/getting-help.html