Hi Kuba, thank you for the comments!
>On Mon, 1 Feb 2021 18:24:19 -0800 Tony Nguyen wrote:
>> From: Arkadiusz Kubalewski <arkadiusz.kubalew...@intel.com>
>>
>> New trace indicates that the XDP program was loaded.
>> The trace has a note that in case of using XDP_REDIRECT,
>> number of queues on both interfaces shall be the same.
>> This is required for optimal performance of XDP_REDIRECT,
>> if interface used for TX has lower number of queues than
>> a RX interface, the packets may be dropped (depending on
>> RSS queue assignment).
>
>By RSS queue assignment you mean interrupt mapping?
Yes, interrupt mapping seems more accurate, will fix it.
>
>> diff --git a/drivers/net/ethernet/intel/i40e/i40e_main.c
>> b/drivers/net/ethernet/intel/i40e/i40e_main.c
>> index 521ea9df38d5..f35bd9164106 100644
>> --- a/drivers/net/ethernet/intel/i40e/i40e_main.c
>> +++ b/drivers/net/ethernet/intel/i40e/i40e_main.c
>> @@ -12489,11 +12489,14 @@ static int i40e_xdp_setup(struct i40e_vsi *vsi,
>> /* Kick start the NAPI context if there is an AF_XDP socket open
>> * on that queue id. This so that receiving will start.
>> */
>> - if (need_reset && prog)
>> + if (need_reset && prog) {
>> + dev_info(&pf->pdev->dev,
>> + "Loading XDP program, please note: XDP_REDIRECT action
>> requires the same number of queues on both interfaces\n");
>
>We try to avoid spamming logs. This message will be helpful to users
>only the first time, if at all.
You are probably right, it would look like a spam to the one who is
continuously loading and unloading the XDP programs.
But still, want to remain as much user friendly as possible.
Will use dev_info_once(...) instead.
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