Layerscape中的主题 Re: DPAA usage

DPAA usage

awilhelm1 — Thu, 25 Jul 2024 10:33:24 GMT

Hello,

I am currently working on a custom board with an LS1046A CPU on a system with Linux kernel version v5.15.137. My board has two Ethernet ports, each of which has a communication partner. The ports are connected to an L2 bridge.

My 'Iperf' performance via this bridge looks very good, I achieve 90% of the gross data rate with a 2.5 GBit/s full duplex setting. All 4 cores are utilized at 40-50%. DPAA promises to reduce the load on all CPUs. Unfortunately, I don't know how to configure the DPAA, or rather, where to start? Can anyone give me a tip on whether optimization is even possible and where it is easiest to implement?

Best regards

Alexander Wilhelm

Re: DPAA usage

yipingwang — Mon, 29 Jul 2024 07:28:53 GMT

Please apply fmc policy before iperf test.

fmc -c /etc/fmc/config/private/ls1046ardb/RR_FFSSPPPH_1133_5559/config.xml -p /etc/fmc/config/private/ls1046ardb/RR_FFSSPPPH_1133_5559/policy_ipv4.xml -a

Please modify /etc/fmc/config/private/ls1046ardb/RR_FFSSPPPH_1133_5559/config.xml according to your target board.

Re: DPAA usage

awilhelm1 — Tue, 30 Jul 2024 09:53:52 GMT

@yipingwang: I would like to use 'fmc' tool but I need to compile it first. Since it depends on 'fmlib' I try to compile that library before. Thus leads to a lot of errors with missing header files like 'fm_ioctls.h' an further. It seems that my vanilla kernel does not contain those files and I shall use the NXP-custom one. While searching I've only found Yocto recipes. Since I'm not using Yocto in my system it does not work for me. Is there a possibility to get a set of patches that I can apply to my vanilla kernel? If so where can I find it?

Best regards

Alexander Wilhelm

Re: DPAA usage

yipingwang — Thu, 01 Aug 2024 06:27:28 GMT

The attached are fmc binary and fmc policy files, please check whether they can work on your target board.

Re: DPAA usage

awilhelm1 — Thu, 01 Aug 2024 07:14:38 GMT

Thanks for the help. The 'fmc' could be in fact executed on my target. I additionally required to compile the 'libxml2' dependency due to missing libraries. Now I get the following error:

./fmc -c /etc/fmc/config/private/ls1046ardb/RR_FFSSPPPH_1133_5559/config.xml -p /etc/fmc/config/private/ls1046ardb/RR_FFSSPPPH_1133_5559/policy_ipv4.xml -a
ERR : Invocation of FM_Open for fm0 failed
ERR : Invocation of FM_PCD_Disable for fm0/pcd failed with error code 0x00010028

Do I require something special in my vanilla kernel or should the config and PCD files work out of the box?

Best regards

Alexander Wilhelm

Re: DPAA usage

yipingwang — Mon, 05 Aug 2024 10:05:28 GMT

Please modify /etc/fmc/config/private/ls1046ardb/RR_FFSSPPPH_1133_5559/config.xml according to your custom board.

If you problem persists, please provide the whole console log from Linux booting up.