[dpdk-dev] [PATCH] fm10k: conditionally disable RSS during device initialization

[Michael Frasca]

Hi Jing,

I ran into this issue while trying to run experiments with different RSS
configurations (no RSS being one cases). It is not clear to me that setting this
register to zero is the best way to disable RSS.

After digging further, I have a theory that I'm having this issues because I've
only attached my DPDK application to SR-IOV ports. In
fm10k_dev_dglort_map_configure(), I see that 'RSS Length' is set for the DGLORT
decoder. However, it appears that this is only invoked for physical functions.

Could this be my problem? Is it required that I bind to the physical function
if I want to properly manipulate RSS? 

Thanks,
Mike



> On Mar 22, 2016, at 11:14 PM, Chen, Jing D <jing.d.chen at intel.com> wrote:
> 
> Hi,
> 
>> -----Original Message-----
>> From: Michael Frasca [mailto:michael.frasca at oracle.com]
>> Sent: Wednesday, March 23, 2016 12:58 AM
>> To: Chen, Jing D
>> Cc: dev at dpdk.org; Michael Frasca
>> Subject: [PATCH] fm10k: conditionally disable RSS during device initialization
>> 
>> If the provided configuration does not call for RSS, then RSS is
>> explicitly disabled. Without this change, the device continues to
>> operate under the previous RSS configuration.
>> 
>> Fixes: 57033cdf8fdc ("fm10k: add PF RSS")
>> 
>> Signed-off-by: Michael Frasca <michael.frasca at oracle.com>
> Acked-by : Jing Chen <jing.d.chen at intel.com>
>