[PATCH v2 030/148] net/ice/base: limit PF RSS LUT to one VSI at time

[Przemek Kitszel]

On 6/19/24 17:41, Bruce Richardson wrote:
> On Wed, Jun 12, 2024 at 04:00:24PM +0100, Anatoly Burakov wrote:
>> From: Ian Stokes <ian.stokes at intel.com>
>>
>> Allow only one VSI to alloc the PF RSS LUT.
>>
>> Shared part consists of just a new field, actual implementation will use
>> `rss_locks` to serialize the access. Take advantage of the fact that VSI #0 is
>> main VSI for PF, what is the default PF LUT holder, so zero-init of struct
>> ice_hw sets it as designed.
>>
>> Signed-off-by: Przemek Kitszel <przemyslaw.kitszel at intel.com>
>> Signed-off-by: Ian Stokes <ian.stokes at intel.com>
>> ---
>>   drivers/net/ice/base/ice_type.h | 1 +
>>   1 file changed, 1 insertion(+)
>>
>> diff --git a/drivers/net/ice/base/ice_type.h b/drivers/net/ice/base/ice_type.h
>> index 48f892bfd3..1e133bb1a6 100644
>> --- a/drivers/net/ice/base/ice_type.h
>> +++ b/drivers/net/ice/base/ice_type.h
>> @@ -1394,6 +1394,7 @@ struct ice_hw {
>>   	ice_declare_bitmap(fdir_perfect_fltr, ICE_FLTR_PTYPE_MAX);
>>   	struct ice_lock rss_locks;	/* protect RSS configuration */
>>   	struct LIST_HEAD_TYPE rss_list_head;
>> +	u16 vsi_owning_pf_lut; /* SW IDX of VSI that acquired PF RSS LUT */
>>   	ice_declare_bitmap(hw_ptype, ICE_FLOW_PTYPE_MAX);
>>   	u8 dvm_ena;
>>   	u16 io_expander_handle;
>> -- 
> 
> This is a one-line change, so can probably be merged into some other patch,
> rather than needing a whole commit on its own.
> 
> /Bruce

preferably to the patch that is the first to use that new field,
I see none (but I'm not subscribed to the dpdk ML, so perhaps there is
some other in the series)