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#!/bin/sh /etc/rc.common
# Copyright (C) 2006 OpenWrt.org
START=11
apply_defaults() {
local mem="$(awk '/^MemTotal:/ {print $2}' /proc/meminfo)"
local min_free frag_low_thresh frag_high_thresh
if [ "$mem" -gt 65536 ]; then # 128M
min_free=16384
elif [ "$mem" -gt 32768 ]; then # 64M
min_free=8192
else
min_free=1024
frag_low_thresh=393216
frag_high_thresh=524288
fi
sysctl -qw vm.min_free_kbytes="$min_free"
[ "$frag_low_thresh" ] && sysctl -qw \
net.ipv4.ipfrag_low_thresh="$frag_low_thresh" \
net.ipv4.ipfrag_high_thresh="$frag_high_thresh" \
net.ipv6.ip6frag_low_thresh="$frag_low_thresh" \
net.ipv6.ip6frag_high_thresh="$frag_high_thresh" \
net.netfilter.nf_conntrack_frag6_low_thresh="$frag_low_thresh" \
net.netfilter.nf_conntrack_frag6_high_thresh="$frag_high_thresh"
# first set default, then all interfaces to avoid races with appearing interfaces
if [ -d /proc/sys/net/ipv6/conf ]; then
echo 0 > /proc/sys/net/ipv6/conf/default/accept_ra
for iface in /proc/sys/net/ipv6/conf/*/accept_ra; do
echo 0 > "$iface"
done
fi
}
start() {
apply_defaults
for CONF in /etc/sysctl.d/*.conf /etc/sysctl.conf; do
[ -f "$CONF" ] && sysctl -p "$CONF" -e >&-
done
}
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