Re: [PATCH net-next v2 3/3] net/mlx4: support per-queue statistics via netlink

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On Fri, Apr 26, 2024 at 01:01:16PM -0700, Jakub Kicinski wrote:
> On Fri, 26 Apr 2024 18:33:55 +0000 Joe Damato wrote:
> > Make mlx4 compatible with the newly added netlink queue stats API.
> > 
> > Signed-off-by: Joe Damato <jdamato@xxxxxxxxxx>
> > Tested-by: Martin Karsten <mkarsten@xxxxxxxxxxxx>
> 
> Not sure what the "master" and "port_up" things are :) 
> but the rest looks good:

So in mlx4_en_DUMP_ETH_STATS, the driver calls mlx4_en_fold_software_stats
which does the same "port_up" / "master" check and bails out... so I figured
for these stats I should do the same.

Was hoping Mellanox would give us a hint, but glancing at the code where the
MLX4_FLAG_MASTER bit is set, it looks like sriov ? maybe "master" means pf and
"slave" means "vf" ?

Not sure why the stats code bails on is_master but not is_slave, though.

> Reviewed-by: Jakub Kicinski <kuba@xxxxxxxxxx>

I'll add your reviewed-by to my v3 and wait until sometime mid next week to
send the v3. Hopefully we'll hear back from the Mellanox folks by then if they
have thoughts/opinions on the stats code.




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