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Network Setup

It’s assumed that the WHLE boards are connected in the following setup:

whle_ls1026_0
 | eth4
 |
 | eth5
whle_ls1046_0
 | eth4
 |
 | eth5
whle_ls1046_1
 | eth4
 |
 | eth5
whle_ls1026_1

The whle_ls1026_0, whle_ls1026_1 are endpoints while whle_ls1046_0, whle_ls1046_1 are gateways.

System setup

All hosts have the same system setup.

Kernel

Make sure /etc/default/u-boot contains kernel arguments bportals=s0 qportals=s0 iommu.passthrough=1

# cat /etc/default/u-boot
U_BOOT_UPDATE="true"
U_BOOT_PARAMETERS="console=ttyS0,115200 earlycon=uart8250,mmio,0x21c0500 rootwait rw  bportals=s0 qportals=s0 iommu.passthrough=1"

Install the right kernel version.

apt-get install -q0 linux-image-6.1.56-whle-ls1-sdk-ga9c58120e2b7

Make sure the installed kernel will be loaded on boot.

# cat /boot/extlinux/extlinux.conf | grep ^default
default l1
# cat /boot/extlinux/extlinux.conf | grep 'label l1$' -A 6
label l1
	menu label Ubuntu 22.04 LTS 6.1.56-whle-ls1-sdk-ga9c58120e2b7
	linux /boot/vmlinuz-6.1.56-whle-ls1-sdk-ga9c58120e2b7
	initrd /boot/initrd.img-6.1.56-whle-ls1-sdk-ga9c58120e2b7
	fdtdir /usr/lib/linux-image-6.1.56-whle-ls1-sdk-ga9c58120e2b7/
	append root=UUID=4e117e32-2acc-400d-8d97-915b6c99c41e console=ttyS0,115200 earlycon=uart8250,mmio,0x21c0500 rootwait rw  bportals=s0 qportals=s0 iommu.passthrough=1

Reboot the board.

Software

# apt-get install -q0 fmc iperf3 bridge-utils

FMC setup

Before any network setup run the fmc tool to set up packet queuing rules.

# fmc -c /root/fmc-config-000000.xml -p /root/fmc-policy-000000.xml -a

The files:

This configuration forms a single, core-affined queue for all traffic. In this way the performance X of a single core in the role of a router or a bridge can be isolated and measured. The performance of the whole processor depends on how evenly the traffic is distributed among the cores, which, if done properly, can easily get close to 4X in case of LS1046 or 2X in case of LS1026. How to evenly distribute the traffic with the queuing rules ultimately depends on the nature of traffic the board is supposed to forward and it’s outside of scope of this tutorial. On technical details of defining the policies please refer to https://www.nxp.com/docs/en/application-note/AN4760.pdf.

Router

Network setup

Enable routing in kernel

whle_ls1046_*:
# echo 1 > /proc/sys/net/ipv4/ip_forward

Set up the network (eth0 is assumed to be the control interface, omitted from the setup)

whle_ls1026_0
# ip address flush eth1
# ip address flush eth2
# ip address flush eth3
# ip address flush eth4
# ip address flush eth5
# ip addr add 192.168.10.1/24 dev eth4
# ip addr add 192.168.11.1/24 dev eth4
# ip link set dev eth4 up
# ip link set dev eth5 up
# ip route add 192.168.20.0/24 via 192.168.10.2
# ip route add 192.168.30.0/24 via 192.168.10.2
# ip route add 192.168.31.0/24 via 192.168.11.2
whle_ls1046_0
# ip address flush eth1
# ip address flush eth2
# ip address flush eth3
# ip address flush eth4
# ip address flush eth5
# ip addr add 192.168.10.2/24 dev eth5
# ip addr add 192.168.11.2/24 dev eth5
# ip addr add 192.168.20.1/24 dev eth4
# ip link set dev eth4 up
# ip link set dev eth5 up
# ip route add 192.168.30.0/24 via 192.168.20.2
# ip route add 192.168.31.0/24 via 192.168.20.2
whle_ls1046_1
# ip address flush eth1
# ip address flush eth2
# ip address flush eth3
# ip address flush eth4
# ip address flush eth5
# ip addr add 192.168.20.2/24 dev eth5
# ip addr add 192.168.30.1/24 dev eth4
# ip addr add 192.168.31.1/24 dev eth4
# ip link set dev eth4 up
# ip link set dev eth5 up
# ip route add 192.168.10.0/24 via 192.168.20.1
# ip route add 192.168.11.0/24 via 192.168.20.1
whle_ls1026_1
# ip address flush eth1
# ip address flush eth2
# ip address flush eth3
# ip address flush eth4
# ip address flush eth5
# ip addr add 192.168.30.2/24 dev eth5
# ip addr add 192.168.31.2/24 dev eth5
# ip link set dev eth4 up
# ip link set dev eth5 up
# ip route add 192.168.10.0/24 via 192.168.30.1
# ip route add 192.168.11.0/24 via 192.168.31.1
# ip route add 192.168.20.0/24 via 192.168.30.1

Testing

whle_ls1026_0
# iperf3 -s
whle_ls1026_1
# iperf3 -c 192.168.10.1
Connecting to host 192.168.10.1, port 5201
[  5] local 192.168.30.2 port 35450 connected to 192.168.10.1 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   449 MBytes  3.77 Gbits/sec    0   3.16 MBytes       
[  5]   1.00-2.00   sec   468 MBytes  3.92 Gbits/sec    0   3.16 MBytes       
[  5]   2.00-3.00   sec   469 MBytes  3.93 Gbits/sec    0   3.16 MBytes       
[  5]   3.00-4.00   sec   468 MBytes  3.93 Gbits/sec    0   3.16 MBytes       
[  5]   4.00-5.00   sec   469 MBytes  3.93 Gbits/sec    0   3.16 MBytes       
[  5]   5.00-6.00   sec   464 MBytes  3.89 Gbits/sec    0   3.16 MBytes       
[  5]   6.00-7.00   sec   459 MBytes  3.85 Gbits/sec    0   3.16 MBytes       
[  5]   7.00-8.00   sec   460 MBytes  3.86 Gbits/sec    0   3.16 MBytes       
[  5]   8.00-9.00   sec   461 MBytes  3.87 Gbits/sec    0   3.16 MBytes       
[  5]   9.00-10.00  sec   458 MBytes  3.84 Gbits/sec    0   3.16 MBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  4.51 GBytes  3.88 Gbits/sec    0             sender
[  5]   0.00-10.07  sec  4.51 GBytes  3.85 Gbits/sec                  receiver

iperf Done.

The network speed close to 4 Gb/s is achieved on a single core in the router role, which allows LS1026 to achieve around 7 Gb/s and LS1046 to easily surpass 9 Gb/s even with sub-optimal queuing, both using standard kernel DPAA drivers.

L2 Bridge

Network setup

whle_ls1046_*
# ip address flush eth4
# ip address flush eth5
# ip link set dev eth4 down
# ip link set dev eth5 down
# brctl addbr br0
# brctl addif br0 eth4
# brctl addif br0 eth5
# ip link set dev br0 up
# ip link set dev eth4 up
# ip link set dev eth5 up
whle_ls1026_0
# ip address flush eth4
# ip address add 192.168.10.1/24 dev eth4
# ip link set dev eth4 up
whle_ls1026_1
# ip address flush eth5
# ip address add 192.168.10.2/24 dev eth5
# ip link set dev eth5 up

Testing

whle_ls1026_0
# iperf3 -s
whle_ls1026_1
# iperf3 -c 192.168.10.1
Connecting to host 192.168.10.1, port 5201
[  5] local 192.168.10.2 port 51262 connected to 192.168.10.1 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   552 MBytes  4.62 Gbits/sec    0   3.08 MBytes       
[  5]   1.00-2.00   sec   576 MBytes  4.83 Gbits/sec  263   2.25 MBytes       
[  5]   2.00-3.00   sec   589 MBytes  4.94 Gbits/sec  138   1.75 MBytes       
[  5]   3.00-4.00   sec   579 MBytes  4.86 Gbits/sec    0   1.97 MBytes       
[  5]   4.00-5.00   sec   571 MBytes  4.79 Gbits/sec    0   2.17 MBytes       
[  5]   5.00-6.00   sec   584 MBytes  4.90 Gbits/sec    0   2.36 MBytes       
[  5]   6.00-7.00   sec   569 MBytes  4.77 Gbits/sec  267   1.82 MBytes       
[  5]   7.00-8.00   sec   575 MBytes  4.83 Gbits/sec    0   2.04 MBytes       
[  5]   8.00-9.00   sec   579 MBytes  4.86 Gbits/sec    0   2.24 MBytes       
[  5]   9.00-10.00  sec   579 MBytes  4.85 Gbits/sec    0   2.42 MBytes       
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  5.62 GBytes  4.82 Gbits/sec  668             sender
[  5]   0.00-10.04  sec  5.62 GBytes  4.80 Gbits/sec                  receiver

Speed network close to 5 Gb/s is achieved on a single core, which allows for throughput close to the link speed on both LS1026 and LS1046 platforms working in a bridge mode on standard Linux DPAA drivers.

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