[Intel-wired-lan] [PATCH net v5] i40e: Fix ethtool rx-flow-hash setting for X722

[G, GurucharanX]

> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces at osuosl.org> On Behalf Of
> Mateusz Palczewski
> Sent: Tuesday, September 6, 2022 3:37 PM
> To: intel-wired-lan at lists.osuosl.org
> Cc: Jaron, MichalX <michalx.jaron at intel.com>
> Subject: [Intel-wired-lan] [PATCH net v5] i40e: Fix ethtool rx-flow-hash
> setting for X722
> 
> From: Slawomir Laba <slawomirx.laba at intel.com>
> 
> When enabling flow type for RSS hash via ethtool:
> 
> ethtool -N $pf rx-flow-hash tcp4|tcp6|udp4|udp6 s|d
> 
> the driver would fail to setup this setting on X722 device since it was using
> the mask on the register dedicated for X710 devices.
> 
> Apply a different mask on the register when setting the RSS hash for the
> X722 device.
> 
> When displaying the flow types enabled via ethtool:
> 
> ethtool -n $pf rx-flow-hash tcp4|tcp6|udp4|udp6
> 
> the driver would print wrong values for X722 device.
> 
> Fix this issue by testing masks for X722 device in i40e_get_rss_hash_opts
> function.
> 
> Fixes: eb0dd6e4a3b3 ("i40e: Allow RSS Hash set with less than four
> parameters")
> Signed-off-by: Slawomir Laba <slawomirx.laba at intel.com>
> Signed-off-by: Michal Jaron <michalx.jaron at intel.com>
> Signed-off-by: Mateusz Palczewski <mateusz.palczewski at intel.com>
> ---
>  v5: Changed author and order of signed-off-by tags
>  v4: Add missing fixes tag and updated kdoc
>  v3: Split the patch series and send only this to net and refactor  to next
> ---
>  .../net/ethernet/intel/i40e/i40e_ethtool.c    | 31 ++++++++++++++-----
>  drivers/net/ethernet/intel/i40e/i40e_type.h   |  4 +++
>  2 files changed, 27 insertions(+), 8 deletions(-)
> 

Tested-by: Gurucharan <gurucharanx.g at intel.com> (A Contingent worker at Intel)