# Copyright (c) 2007-2008 Roy Marples # 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 += 1 )) [ ${i} -lt 1 ] && continue case "${line}" in "${IFACE}:"*) echo "${i}"; return 0;; esac done < /proc/net/dev # Return the next available index : $(( i += 1 )) echo "${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 local address netmask broadcast peer anycast label scope local valid_lft preferred_lft home nodad address="$1" ; shift while [ -n "$*" ]; do case "$1" in netmask) netmask="/$(_netmask2cidr "$2")" ; shift ; shift ;; broadcast|brd) broadcast="broadcast $2" ; shift ; shift ;; pointopoint|pointtopoint|peer) peer="peer $2" ; shift ; shift ;; anycast|label|scope|valid_lft|preferred_lft) eval "$1=$2" ; shift ; shift ;; home|nodad) eval "$1=$1" ; shift ;; esac done # Always scope lo addresses as host unless specified otherwise if [ "${IFACE}" = "lo" ]; then [ -z "$scope" ] && scope="scope host" fi # figure out the broadcast address if it is not specified [ -z "$broadcast" ] && broadcast="broadcast +" set -- "${address}${netmask}" $peer $broadcast $anycast $label $scope dev "${IFACE}" $valid_lft $preferred_lft $home $nodad veinfo ip addr add "$@" ip addr add "$@" } _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 veinfo ip ${family} route append ${cmd} dev "${IFACE}" 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="$2" veindent local IFS="$__IFS" for ru in $rules ; do unset IFS ruN="$(_trim "${ru}")" [ -z "${ruN}" ] && continue vebegin "${cmd} ${ruN}" ip rule ${cmd} ${ru} veend $? local IFS="$__IFS" done IFS="${OIFS}" veoutdent } iproute2_pre_start() { local tunnel= eval tunnel=\$iptunnel_${IFVAR} if [ -n "${tunnel}" ]; then # Set our base metric to 1000 metric=1000 # Bug#347657: If the mode is 'ipip6' or 'ip6ip6', the -6 must be passed # to iproute2 during tunnel creation. local ipproto='' [ "${tunnel##mode ipip6}" != "${tunnel}" ] && ipproto='-6' [ "${tunnel##mode ip6ip6}" != "${tunnel}" ] && ipproto='-6' ebegin "Creating tunnel ${IFVAR}" ip ${ipproto} 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" "${rules}" einfo "Adding RPDB rules" _ip_rule_runner add "${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 -= 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")" if [ -n "${rules}" ]; then einfo "Removing RPDB rules" _ip_rule_runner del "${rules}" fi # Only do something if the interface actually exist if _exists; then ip route flush table cache dev "${IFACE}" fi fi # Don't delete sit0 as it's a special tunnel if [ "${IFACE}" != "sit0" ]; then if [ -n "$(ip tunnel show "${IFACE}" 2>/dev/null)" ]; then ebegin "Destroying tunnel ${IFACE}" ip tunnel del "${IFACE}" eend $? fi fi } # Is the interface administratively/operationally up? # The 'UP' status in ifconfig/iproute2 is the administrative status # Operational state is available in iproute2 output as 'state UP', or the # operstate sysfs variable. # 0: up # 1: down # 2: invalid arguments is_admin_up() { local iface="$1" [ -z "$iface" ] && iface="$IFACE" ip link show dev $iface | \ sed -n '1,1{ /[<,]UP[,>]/{ q 0 }}; q 1; ' } is_oper_up() { local iface="$1" [ -z "$iface" ] && iface="$IFACE" read state