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8767ba8698
With this change, sysctl parameters can be set via the uci. The following unamed section musst be set in '/etc/config/sysctl'. config sysctl option enable '1' option section 'net.ipv4.fib_multipath_hash_policy' option value '2' If the unamed section gets disabled, then the default value gets set, that was saved during boot. Signed-off-by: Florian Eckert <fe@dev.tdt.de>
79 lines
1.9 KiB
Bash
Executable File
79 lines
1.9 KiB
Bash
Executable File
#!/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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handle_sysctl() {
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local cfg="$1"
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local sysctl="$2"
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local enable section value
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config_get section "$cfg" section
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[ -z "$section" ] && return
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# check if section should be set and if not reset to default value
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config_get_bool enable "$cfg" enable '0'
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if [ "$enable" = '0' ]; then
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value="$(grep "$section =" /tmp/sysctl-default.conf)"
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value="${value##*= }"
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else
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config_get value "$cfg" value
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fi
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[ -z "$value" ] && return
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echo "${section}=${value}" >> "$sysctl"
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}
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apply_uci() {
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mkdir -p /tmp/run/sysctl.d
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rm -f /tmp/run/sysctl.d/01-uci.conf
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config_load sysctl
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config_foreach handle_sysctl sysctl "/tmp/run/sysctl.d/01-uci.conf"
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}
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start() {
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apply_defaults
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[ -f /tmp/sysctl-default.conf ] || sysctl -a 1>/tmp/sysctl-default.conf 2>/dev/null
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apply_uci
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for CONF in /etc/sysctl.d/*.conf /etc/sysctl.conf /tmp/run/sysctl.d/*.conf; do
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[ -f "$CONF" ] && sysctl -e -p "$CONF" >&-
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done
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}
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