diskimage-builder/elements/dhcp-all-interfaces/install.d/dhcp-all-interfaces.sh
Moshe Levi a1d32c6d51 Increase interface has link retries to 20
InfiniBand interface takes more time to bring up then
Ethernet interface. This patch just increase the retries
to 20 times, to make it work for InfiniBand as well.

Change-Id: I5c4842696207885552413ea2d053f2e90bd6803c
2016-02-07 16:28:52 +02:00

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#!/bin/bash
if [ ${DIB_DEBUG_TRACE:-0} -gt 0 ]; then
set -x
fi
set -eu
set -o pipefail
INTERFACE=${1:-} #optional, if not specified configure all available interfaces
ENI_FILE="/etc/network/interfaces"
PATH=/sbin:$PATH
if [ -d "/etc/network" ]; then
CONF_TYPE="eni"
elif [ -d "/etc/sysconfig/network-scripts/" ]; then
CONF_TYPE="netscripts"
else
echo "Unsupported network configuration type!"
exit 1
fi
ARGS="$0 $@"
function serialize_me() {
if [ "$CONF_TYPE" == "eni" ]; then
# Serialize runs so that we don't miss hot-add interfaces
FLOCKED=${FLOCKED:-}
if [ -z "$FLOCKED" ] ; then
FLOCKED=true exec flock -x $ENI_FILE $ARGS
fi
fi
}
function get_if_link() {
cat /sys/class/net/${1}/carrier
}
function enable_interface() {
local interface=$1
serialize_me
if [ "$CONF_TYPE" == "eni" ]; then
printf "auto $interface\niface $interface inet dhcp\n\n" >>$ENI_FILE
elif [ "$CONF_TYPE" == "netscripts" ]; then
printf "DEVICE=\"$interface\"\nBOOTPROTO=\"dhcp\"\nONBOOT=\"yes\"\nTYPE=\"Ethernet\"" >"/etc/sysconfig/network-scripts/ifcfg-$interface"
fi
echo "Configured $1"
}
function config_exists() {
local interface=$1
if [ "$CONF_TYPE" == "netscripts" ]; then
if [ -f "/etc/sysconfig/network-scripts/ifcfg-$interface" ]; then
return 0
fi
else
ifquery $interface >/dev/null 2>&1 && return 0 || return 1
fi
return 1
}
function inspect_interface() {
local interface=$1
local mac_addr_type
mac_addr_type=$(cat /sys/class/net/${interface}/addr_assign_type)
echo -n "Inspecting interface: $interface..."
if config_exists $interface; then
echo "Has config, skipping."
elif [ "$mac_addr_type" != "0" ]; then
echo "Device has generated MAC, skipping."
else
ip link set dev $interface up &>/dev/null
local has_link
local tries
for ((tries = 0; tries < 20; tries++)); do
has_link=$(get_if_link $interface)
[ "$has_link" == "1" ] && break
sleep 1
done
if [ "$has_link" == "1" ]; then
enable_interface "$interface"
else
echo "No link detected, skipping"
fi
fi
}
if [ -n "$INTERFACE" ]; then
inspect_interface $INTERFACE
else
for iface in $(ls /sys/class/net | grep -v ^lo$); do
inspect_interface $iface
done
fi