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net/mlx4: fix RSS action with null hash key
[ upstream commit 4a750d2 ] If RSS action contains non zero hash key length and NULL key buffer pointer the default hash key should be used. The check for the NULL pointer this was missing in the mlx4 PMD causing crash, for example, in testpmd with command: flow validate 0 ingress group 0 pattern eth / ipv4 / end actions rss queues 0 end key_len 40 / end Fixes: ac8d22d ("ethdev: flatten RSS configuration in flow API") Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com> Acked-by: Matan Azrad <matan@nvidia.com>
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