netdev - [PATCH net 0/2] rhashtable: Fix rhltable duplicates insertion

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Message-Id: <1520166867-4215-1-git-send-email-paulb@mellanox.com>
Date:   Sun,  4 Mar 2018 14:34:25 +0200
From:   Paul Blakey <paulb@...lanox.com>
To:     Thomas Graf <tgraf@...g.ch>,
        Herbert Xu <herbert@...dor.apana.org.au>,
        David Miller <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, Yevgeny Kliteynik <kliteyn@...lanox.com>,
        Roi Dayan <roid@...lanox.com>,
        Shahar Klein <shahark@...lanox.com>,
        Mark Bloch <markb@...lanox.com>,
        Jiri Pirko <jiri@...lanox.com>,
        Or Gerlitz <ogerlitz@...lanox.com>,
        Matan Barak <matanb@...lanox.com>,
        Paul Blakey <paulb@...lanox.com>
Subject: [PATCH net 0/2] rhashtable: Fix rhltable duplicates insertion

On our mlx5 driver fs_core.c, we use the rhltable interface to store
flow groups. We noticed that sometimes we get a warning that flow group isn't
found at removal. This rare case was caused when a specific scenrio happened, 
insertion of a flow group with a similar match criteria (duplicate),
but only where the flow group rhash_head was second (or not first)
on the relevant rhashtable bucket list.

The first patch fixes it, and the second one adds a test that show
it is now working.

Paul Blakey (2):
  rhashtable: Fix rhltable duplicates insertion
  test_rhashtable: add test case for rhl_table with duplicate objects

 include/linux/rhashtable.h |   4 +-
 lib/test_rhashtable.c      | 121 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 124 insertions(+), 1 deletion(-)

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1.8.4.3