netdev - [PATCH v2 net] hsr: HSR send/recv fixes

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Message-Id: <20221121174605.2456845-1-bigeasy@linutronix.de>
Date:   Mon, 21 Nov 2022 18:45:58 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     netdev@...r.kernel.org
Cc:     "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Kurt Kanzenbach <kurt@...utronix.de>
Subject: [PATCH v2 net] 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.

v1…v2:
- 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
  testing.

Sebastian