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Date:   Fri, 25 Nov 2022 17:56:02 +0100
From:   Sebastian Andrzej Siewior <>
Cc:     "David S. Miller" <>,
        Eric Dumazet <>,
        Jakub Kicinski <>,
        Paolo Abeni <>,
        Thomas Gleixner <>,
        Kurt Kanzenbach <>
Subject: [PATCH v4 net-next 0/8]: hsr: HSR send/recv fixes

I started playing with HSR and run into a problem. Tested latest
upstream -rc and noticed more problems. Now it appears to work.
For testing I have a small three node setup with iperf and ping. While
iperf doesn't complain ping reports missing packets and duplicates.

- Targeting net-next now.
- Added patch #7 back to basket. Kurt's review comments are addressed.
- Added a basic test for HSRv0.

- dropped patch #7 was an optimisation.

- Replaced cmpxchg() from patch #6 with lock because RiscV does not provide
  cmpxchg() for 16bit.
- Added patch #3 which fixes the random crashes I observed on latest rc5 while


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