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