[PATCH net-next v4 0/6] Add AF_XDP zero copy support

[Malladi, Meghana]

Hi Jacob,

On 10/24/2025 6:26 AM, Jacob Keller wrote:
> 
> 
> On 10/23/2025 2:39 AM, Meghana Malladi wrote:
>> This series adds AF_XDP zero coppy support to icssg driver.
>>
>> Tests were performed on AM64x-EVM with xdpsock application [1].
>>
>> A clear improvement is seen Transmit (txonly) and receive (rxdrop)
>> for 64 byte packets. 1500 byte test seems to be limited by line
>> rate (1G link) so no improvement seen there in packet rate
>>
>> Having some issue with l2fwd as the benchmarking numbers show 0
>> for 64 byte packets after forwading first batch packets and I am
>> currently looking into it.
>>
> 
> Do you think this means there is an issue with the patches or your test
> setup?
> 
> I didn't see anything stand out as a problem to me when reading the series:
> 
> Reviewed-by: Jacob Keller <jacob.e.keller at intel.com>
> 

The setup is quite simple. I send broadcast traffic to the dut on which 
I run l2fwd (with xdpsock) and expect the stats to increase. But after 
4096 packets, the stats stop incrementing. And I see this issue only 
with 64 byte packet and not with 1500 byte packets. I am suspecting 
could be some race condition or some bug in our dma controller. I am 
tracking this issue and post a fix for this separately.

-- 
Thanks,
Meghana Malladi