#!/bin/sh /etc/rc.common
#
# Copyright (c) 2015-2017, The Linux Foundation. All rights reserved.
#
# Permission to use, copy, modify, and/or distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#

START=70

enable_rps() {
	set_affinity() {
		awk "/$1/{ print substr(\$1, 1, length(\$1)-1) }" /proc/interrupts | while read irq
	  do
		[ -n "$irq" ] && echo $2 > /proc/irq/$irq/smp_affinity
	  done
	}

	# assign 3 nss queues to each core
	set_affinity 'nss_queue1' 2
	set_affinity 'nss_queue2' 4
	set_affinity 'nss_queue3' 8
	set_affinity 'nss_queue0' 1

	# assign lan/wan to core 4
	set_affinity 'nss_empty_buf_sos' 4
	set_affinity 'nss_empty_buf_queue' 4

	# Enable NSS RPS
	sysctl -w dev.nss.rps.enable=1 > /dev/null 2> /dev/null
}

start() {
	local rps_enabled="$(uci_get nss @general[0] enable_rps)"
	if [ "$rps_enabled" -eq 1 ]; then
	  enable_rps
	fi
}