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Rana Shahout authored
The default fallback function used by mlx5e select queue can return any TX queues in range [0..dev->num_real_tx_queues). The current implementation assumes that the fallback function returns a number in the range [0.. number of channels). Actually dev->num_real_tx_queues = (number of channels) * dev->num_tc; which is more than the expected range if num_tc is configured and could lead to crashes. To fix this we test if num_tc is not configured we can safely return the fallback suggestion, if not we will reciprocal_scale the fallback result and normalize it to the desired range. Fixes: 08fb1dac ('net/mlx5e: Support DCBNL IEEE ETS') Signed-off-by:
Rana Shahout <ranas@mellanox.com> Signed-off-by:
Saeed Mahameed <saeedm@mellanox.com> Reported-by:
Doug Ledford <dledford@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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