OpenWRT NanoPi R6S net-smp-affinity for 8125-rss

net-smp-affinity

. /lib/functions/uci-defaults.sh

#!/bin/sh

get_device_irq() {
        local device="$1"
        local line

        while true; do
                line=$(grep -m 1 "${device}\$" /proc/interrupts) && break
                [ "${seconds}" -le 0 ] && break
                seconds="$(( seconds - 2 ))"
                sleep 2
        done
        echo ${line} | sed 's/:.*//'
}

set_interface_core() {
        local core_mask="$1"
        local interface="$2"
        local device="$3"

        [ -z "${device}" ] && device="$interface"

        local irq=$(get_device_irq "$device")
        [ -z "$irq" ] && return 0

        echo -n "${core_mask}" > /proc/irq/${irq}/smp_affinity
}

set_interface_rps() {
        local core_mask="$1"
        local interface="$2"

        for d in /sys/class/net/${interface}/queues/rx-*; do
                [ -d $d ] && echo "${core_mask}" > $d/rps_cpus
        done
}

  set_interface_core ff "eth0"
  set_interface_rps "f" "eth0"

  # eth1 (WAN): IRQs -> CPU5 (A76 fast), RPS all queues -> CPU4 (A76 fast)
  set_interface_core 20 "eth1-0"
  set_interface_core 20 "eth1-1"
  set_interface_core 20 "eth1-2"
  set_interface_core 20 "eth1-3"
  set_interface_core 20 "eth1-16"
  set_interface_core 20 "eth1-18"
  echo 10 > /sys/class/net/eth1/queues/rx-0/rps_cpus
  echo 10 > /sys/class/net/eth1/queues/rx-1/rps_cpus
  echo 10 > /sys/class/net/eth1/queues/rx-2/rps_cpus
  echo 10 > /sys/class/net/eth1/queues/rx-3/rps_cpus

  # eth2 (LAN): IRQs -> CPU7 (A76 fast), RPS all queues -> CPU6 (A76 fast)
  set_interface_core 80 "eth2-0"
  set_interface_core 80 "eth2-1"
  set_interface_core 80 "eth2-2"
  set_interface_core 80 "eth2-3"
  set_interface_core 80 "eth2-16"
  set_interface_core 80 "eth2-18"
  echo 40 > /sys/class/net/eth2/queues/rx-0/rps_cpus
  echo 40 > /sys/class/net/eth2/queues/rx-1/rps_cpus
  echo 40 > /sys/class/net/eth2/queues/rx-2/rps_cpus
  echo 40 > /sys/class/net/eth2/queues/rx-3/rps_cpus

  seconds="0"
  set_interface_core 80 "xhci-hcd:usb3"
  set_interface_rps "fe" "wlan0"