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1b2900db01
Symmetric RSS hash requires that: * No other fields besides IP src/dst and/or L4 src/dst are set * If src is set, dst must also be set This restriction was only enforced when RXNFC was configured after symmetric hash was enabled. In the opposite order of operations (RXNFC then symmetric enablement) the check was not performed. Perform the sanity check on set_rxfh as well, by iterating over all flow types hash fields and making sure they are all symmetric. Introduce a function that returns whether a flow type is hashable (not spec only) and needs to be iterated over. To make sure that no one forgets to update the list of hashable flow types when adding new flow types, a static assert is added to draw the developer's attention. The conversion of uapi #defines to enum is not ideal, but as Jakub mentioned [1], we have precedent for that. [1] https://lore.kernel.org/netdev/20250324073509.6571ade3@kernel.org/ Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Signed-off-by: Gal Pressman <gal@nvidia.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://patch.msgid.link/20250508103034.885536-1-gal@nvidia.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> |
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