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From: "ZhangHaisen" <zhanghaisen@bigo.sg>
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Date: Wed, 29 May 2019 16:48:08 +0800
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Subject: [dpdk-users] question about XL710 ATR mode
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Hi=A3=AC

I have questions about the ATR mode of Intel XL710 NIC.

I built nginx with DPDK, and ran it as 16 worker processes which means, =
each
process was band to one cpu core to handle one queue of NIC.

My nginx worked as reverse proxy and would initiatively connected to the
backend Real http server. I ran my nginx on the server with Intel X520
NIC,and it worked well.=20

=20

While with same configure I ran it on the server with Intel XL710 NIC, =
nginx
did not work.

It seems that DPDK i40e driver does not support automatic ATR in default =
for
XL710, while XL710 datasheet says in default it runs on ATR mode.

And I found in the DPDK source code for i40e driver, there is not =
routine to
enable or disable ATR mode.=20

=20

How should I do if I need to use ATR mode for XL710 in DPDK?

Can someone help on this?

=20

Thanks,

--Zhanghaisen

=20