net/mlx5: HWS, fix counting of rules in the matcher

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Currently the counter that counts number of rules in a matcher is
increased only when rule insertion is completed. In a multi-threaded
usecase this can lead to a scenario that many rules can be in process
of insertion in the same matcher, while none of them has completed
the insertion and the rule counter is not updated. This results in
a rule insertion failure for many of them at first attempt, which
leads to all of them requiring rehash and requiring locking of all
the queue locks.

This patch fixes the case by increasing the rule counter in the
beginning of insertion process and decreasing in case of any failure.

Signed-off-by: Vlad Dogaru <vdogaru@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1746992290-568936-8-git-send-email-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

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Yevgeny Kliteynik 2025-05-11 22:38:07 +03:00 • committed by Jakub Kicinski

parent 9d4024edce

commit 4c56b5cbc3

1 changed files with 5 additions and 5 deletions

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drivers/net/ethernet/mellanox/mlx5/core/steering/hws/bwc.c

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