# Copyright (c) 2007-2008 Roy Marples # All rights reserved. Released under the 2-clause BSD license. _ip() { if [ -x /bin/ip ]; then echo /bin/ip else echo /sbin/ip fi } iproute2_depend() { program $(_ip) provide interface after ifconfig } _up() { ip link set "${IFACE}" up } _down() { ip link set "${IFACE}" down } _exists() { grep -Eq "^[[:space:]]*${IFACE}:" /proc/net/dev } _ifindex() { local line= i=-2 while read line; do i=$((${i} + 1)) [ ${i} -lt 1 ] && continue case "${line}" in "${IFACE}:"*) echo "${i}"; return 0;; esac done < /proc/net/dev # Return the next available index i=$((${i} + 1)) echo "${i}" return 1 } _is_wireless() { # Support new sysfs layout [ -d /sys/class/net/"${IFACE}"/wireless -o \ -d /sys/class/net/"${IFACE}"/phy80211 ] && return 0 [ ! -e /proc/net/wireless ] && return 1 grep -Eq "^[[:space:]]*${IFACE}:" /proc/net/wireless } _set_flag() { local flag=$1 opt="on" if [ "${flag#-}" != "${flag}" ]; then flag=${flag#-} opt="off" fi ip link set "${IFACE}" "${flag}" "${opt}" } _get_mac_address() { local mac=$(LC_ALL=C ip link show "${IFACE}" | sed -n \ -e 'y/abcdef/ABCDEF/' \ -e '/link\// s/^.*\<\(..:..:..:..:..:..\)\>.*/\1/p') case "${mac}" in 00:00:00:00:00:00);; 44:44:44:44:44:44);; FF:FF:FF:FF:FF:FF);; "");; *) echo "${mac}"; return 0;; esac return 1 } _set_mac_address() { ip link set "${IFACE}" address "$1" } _get_inet_addresses() { LC_ALL=C ip -family inet addr show "${IFACE}" | \ sed -n -e 's/.*inet \([^ ]*\).*/\1/p' } _get_inet_address() { set -- $(_get_inet_addresses) [ $# = "0" ] && return 1 echo "$1" } _add_address() { if [ "$1" = "127.0.0.1/8" -a "${IFACE}" = "lo" ]; then ip addr add "$@" dev "${IFACE}" 2>/dev/null return 0 fi # Convert an ifconfig line to iproute2 if [ "$2" = "netmask" ]; then local one="$1" three="$3" shift; shift; shift set -- "${one}/$(_netmask2cidr "${three}")" "$@" fi # tunnel keyword is 'peer' in iproute2, but 'pointopoint' in ifconfig. if [ "$2" = "pointopoint" ]; then local one="$1" shift; shift set -- "${one}" "peer" "$@" fi # Always scope lo addresses as host unless specified otherwise if [ "${IFACE}" = "lo" ]; then set -- "$@" "scope" "host" fi # IPv4 specifics case "$1" in *.*.*.*) case "$@" in *" brd "*);; *" broadcast "*);; *) set -- "$@" brd +;; esac ;; esac ip addr add "$@" dev "${IFACE}" } _add_route() { local family= if [ "$1" = "-A" -o "$1" = "-f" -o "$1" = "-family" ]; then family="-f $2" shift; shift fi if [ $# -eq 3 ]; then set -- "$1" "$2" via "$3" elif [ "$3" = "gw" ]; then local one=$1 two=$2 shift; shift; shift set -- "${one}" "${two}" via "$@" fi local cmd= have_metric=false while [ -n "$1" ]; do case "$1" in metric) cmd="${cmd} $1"; have_metric=true;; netmask) cmd="${cmd}/$(_netmask2cidr "$2")"; shift;; -host|-net);; *) cmd="${cmd} $1";; esac shift done # We cannot use a metric if we're using a nexthop if ! ${have_metric} && \ [ -n "${metric}" -a \ "${cmd##* nexthop }" = "$cmd" ] then cmd="${cmd} metric ${metric}" fi ip ${family} route append ${cmd} dev "${IFACE}" eend $? } _delete_addresses() { ip addr flush dev "${IFACE}" scope global 2>/dev/null ip addr flush dev "${IFACE}" scope site 2>/dev/null if [ "${IFACE}" != "lo" ]; then ip addr flush dev "${IFACE}" scope host 2>/dev/null fi return 0 } _has_carrier() { return 0 } _tunnel() { ip tunnel "$@" } # This is just to trim whitespace, do not add any quoting! _trim() { echo $* } # This is our interface to Routing Policy Database RPDB # This allows for advanced routing tricks _ip_rule_runner() { local cmd rules OIFS="${IFS}" cmd="$1" rules="$2" eindent local IFS="$__IFS" for ru in $rules ; do unset IFS ruN="$(trim "${ru}")" [ -z "${ruN}" ] && continue ebegin "${cmd} ${ruN}" ip rule ${cmd} ${ru} eend $? local IFS="$__IFS" done IFS="${OIFS}" eoutdent } iproute2_pre_start() { local tunnel= eval tunnel=\$iptunnel_${IFVAR} if [ -n "${tunnel}" ]; then # Set our base metric to 1000 metric=1000 ebegin "Creating tunnel ${IFVAR}" ip tunnel add ${tunnel} name "${IFACE}" eend $? || return 1 _up fi # MTU support local mtu= eval mtu=\$mtu_${IFVAR} [ -n "${mtu}" ] && ip link set "${IFACE}" mtu "${mtu}" # TX Queue Length support local len= eval len=\$txqueuelen_${IFVAR} [ -n "${len}" ] && ip link set "${IFACE}" txqueuelen "${len}" return 0 } _iproute2_ipv6_tentative() { # Only check tentative when we have a carrier. LC_ALL=C ip link show dev "${IFACE}" | grep -q "NO-CARRIER" && return 1 LC_ALL=C ip addr show dev "${IFACE}" | \ grep -q "^[[:space:]]*inet6 .* tentative" } iproute2_post_start() { local n=5 # Kernel may not have IP built in if [ -e /proc/net/route ]; then local rules="$(_get_array "rules_${IFVAR}")" if [ -n "${rules}" ]; then if ! ip rule list | grep -q "^"; then eerror "IP Policy Routing (CONFIG_IP_MULTIPLE_TABLES) needed for ip rule" else service_set_value "ip_rule" "${rules}" _ip_rule_runner add "${rules}" fi fi ip route flush table cache dev "${IFACE}" fi if _iproute2_ipv6_tentative; then ebegin "Waiting for IPv6 addresses" while [ $n -ge 0 ]; do _iproute2_ipv6_tentative || break sleep 1 n=$(($n - 1)) done [ $n -ge 0 ] eend $? fi return 0 } iproute2_post_stop() { # Kernel may not have IP built in if [ -e /proc/net/route ]; then local rules="$(service_get_value "ip_rule")" [ -n "${rules}" ] && _ip_rule_runner del "${rules}" ip route flush table cache dev "${IFACE}" fi # Don't delete sit0 as it's a special tunnel if [ "${IFACE}" != "sit0" ]; then if [ -n "$(ip tunnel show "${IFACE}" 2>/dev/null)" ]; then ebegin "Destroying tunnel ${IFACE}" ip tunnel del "${IFACE}" eend $? fi fi }