net/mlx5e: kTLS, Use refcounts to free kTLS RX priv context

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wait_for_resync is unreliable - if it timeouts, priv_rx will be freed
anyway. However, mlx5e_ktls_handle_get_psv_completion will be called
sooner or later, leading to use-after-free. For example, it can happen
if a CQ error happened, and ICOSQ stopped, but later on the queues are
destroyed, and ICOSQ is flushed with mlx5e_free_icosq_descs.

This patch converts the lifecycle of priv_rx to fully refcount-based, so
that the struct won't be freed before the refcount goes to zero.

Fixes: 0419d8c9d8 ("net/mlx5e: kTLS, Add kTLS RX resync support")
Signed-off-by: Maxim Mikityanskiy <maximmi@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

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Maxim Mikityanskiy 2021-01-22 18:42:29 +02:00 • committed by Saeed Mahameed

parent ebf79b6be6

commit b850bbff96

1 changed files with 30 additions and 34 deletions

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drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c

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