1 files changed, 349 insertions, 0 deletions
diff --git a/net-scripts/net/iproute2.sh b/net-scripts/net/iproute2.sh
new file mode 100644
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@@ -0,0 +1,349 @@
+# Copyright (c) 2004-2006 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# Contributed by Roy Marples (uberlord@gentoo.org)
+
+# Fix any potential localisation problems
+# Note that LC_ALL trumps LC_anything_else according to locale(7)
+ip() {
+	LC_ALL=C /sbin/ip "$@"
+}
+iproute2_tunnel() {
+	LC_ALL=C /sbin/ip tunnel "$@"
+}
+
+# void iproute2_depend(void)
+#
+# Sets up the dependancies for the module
+iproute2_depend() {
+	provide interface
+	functions interface_device
+}
+
+# void iproute2_expose(void)
+#
+# Expose variables that can be configured
+iproute2_expose() {
+	variables config routes fallback metric ipaddr ipaddr_fallback iproute inet6
+}
+
+# bool iproute2_check_installed(void)
+#
+# Returns 1 if iproute2 is installed, otherwise 0
+iproute2_check_installed() {
+	local report="${1:-false}" installed="0"
+	if [[ ! -x /sbin/ip ]] ; then
+		installed="1"
+		${report} && eerror "For iproute2 support, emerge sys-apps/iproute2"
+	fi
+	if [[ ! -e /proc/net/netlink ]] ; then
+		installed="1"
+		${report} && eerror "iproute2 requires NetLink enabled in the kernel"
+	fi
+	return "${installed}"
+}
+
+# bool iproute2_exists(char *interface, bool report)
+#
+# Returns 1 if the interface exists, otherwise 0
+iproute2_exists() {
+	local e="$( ip addr show label "$1" )" report="${2:-false}"
+	[[ -n ${e} ]] && return 0
+
+	if ${report} ; then
+		eerror "network interface $1 does not exist"
+		eerror "Please verify hardware or kernel module (driver)"
+	fi
+	return 1
+}
+
+# void iproute2_up(char *interface)
+#
+# provides a generic interface for bringing interfaces up
+iproute2_up() {
+	ip link set up dev "$1"
+}
+
+# void iproute2_down(char *interface)
+#
+# provides a generic interface for bringing interfaces up
+iproute2_down() {
+	ip link set down dev "$1"
+}
+
+# bool ifproute2_is_up(char *iface, bool withaddress)
+#
+# Returns 0 if the interface is up, otherwise 1
+# If withaddress is true then the interface has to have an IPv4 address
+# assigned as well
+iproute2_is_up() {
+	local check="\<UP\>" addr="${2:-false}"
+	${addr} && check="${check}.*inet "
+	ip addr show "$1" | tr '\n' ' ' | grep -Eq "${check}"
+}
+
+# void iproute2_set_flag(char *iface, char *flag, bool enabled)
+#
+# Sets or disables the interface flag 
+iproute2_set_flag() {
+	local enable="$3" opt="on"
+	${enable} || opt="off"
+	ip link set "$1" "$2" "${opt}"
+}
+
+# void iproute2_get_address(char *interface)
+#
+# Fetch the address retrieved by DHCP.  If successful, echoes the
+# address on stdout, otherwise echoes nothing.
+iproute2_get_address() {
+	ip -family inet addr show "$1" | sed -n -e 's/.*inet \([^ ]*\).*/\1/p'
+}
+
+# bool iproute2_is_ethernet(char *interface)
+#
+# Return 0 if the link is ethernet, otherwise 1.
+iproute2_is_ethernet() {
+	ip link show "$1" | grep -q "^[[:space:]]*link/ether[[:space:]]*"
+}
+
+# void iproute2_get_mac_address(char *interface)
+#
+# Fetch the mac address assingned to the network card
+iproute2_get_mac_address() {
+	local mac="$( ip link show "$1" | sed -n -e \
+		'/link\// s/^.*\<\(..:..:..:..:..:..\)\>.*/\U\1/p' )"
+	[[ ${mac} != '00:00:00:00:00:00' \
+	&& ${mac} != '44:44:44:44:44:44' \
+	&& ${mac} != 'FF:FF:FF:FF:FF:FF' ]] \
+		&& echo "${mac}"
+}
+
+# void iproute2_set_mac_address(char *interface, char *mac)
+#
+# Assigned the mac address to the network card
+iproute2_set_mac_address() {
+	ip link set address "$2" dev "$1"
+}
+
+# int iproute2_set_name(char *interface, char *new_name)
+#
+# Renames the interface
+# This will not work if the interface is setup!
+iproute2_set_name() {
+	ip link set name "$2" dev "$1"
+}
+
+# void iproute2_get_aliases_rev(char *interface)
+#
+# Fetch the list of aliases for an interface.  
+# Outputs a space-separated list on stdout, in reverse order, for
+# example "eth0:2 eth0:1"
+iproute2_get_aliases_rev() {
+	local iface="$( interface_device "$1" )"
+	ip addr show dev "${iface}" | grep -o "${iface}:[0-9].*" | tac
+}
+
+# bool iproute2_del_addresses(char *interface, bool onlyinet)
+#
+# Remove addresses from interface.
+# If onlyinet is true, then we only remove IPv4 / inet addresses.
+iproute2_del_addresses() {
+	local pre=""
+	${2:-false} && pre="-f inet"
+	ip ${pre} addr flush label "$1" scope global &>/dev/null
+	ip ${pre} addr flush label "$1" scope site &>/dev/null
+	ip ${pre} addr flush label "$1" scope host &>/dev/null
+	return 0
+}
+
+# bool iproute2_get_old_config(char *iface)
+#
+# Returns config and config_fallback for the given interface
+iproute2_get_old_config() {
+	local ifvar="$( bash_variable "$1" )" inet6="" t=""
+
+	# iproute2-style config vars
+	t="ipaddr_${ifvar}[@]"
+	config=( "${!t}" )
+	t="config_fallback_${ifvar}[@]"
+	config_fallback=( "${!t}" )
+	t="inet6_${ifvar}[@]"
+	inet6=( "${!t}" )
+
+	# BACKWARD COMPATIBILITY: check for space-separated inet6 addresses
+	[[ ${#inet6[@]} == "1" && ${inet6} == *" "* ]] && inet6=( ${inet6} )
+
+	# Add inet6 addresses to our config if required
+	[[ -n ${inet6} ]] && config=( "${config[@]}" "${inet6[@]}" )
+
+	# Support old style iface_xxx syntax
+	if [[ -z ${config} ]] ; then
+		if is_function ifconfig_get_old_config ; then
+			ifconfig_get_old_config "${iface}"
+		fi
+	fi
+
+	return 0
+}
+
+# bool iproute2_iface_stop(char *interface)
+#
+# Do final shutdown for an interface or alias.
+#
+# Returns 0 (true) when successful, non-zero (false) on failure
+iproute2_iface_stop() {
+	local label="$1" iface="$( interface_device "$1" )"
+
+	# Shut down the link if this isn't an alias or vlan
+	if [[ ${label} == "${iface}" ]] ; then
+		iproute2_down "${iface}"
+		return $?
+	fi
+	return 0
+}
+
+# bool iproute2_add_address(char *interface, char *options ...)
+#
+# Adds an the specified address to the interface
+# returns 0 on success and non-zero on failure
+iproute2_add_address() {
+	local iface="$1" x=""
+
+	iproute2_exists "${iface}" true || return 1
+
+	# Extract the config
+	local -a config=( "$@" )
+	config=( ${config[@]:1} )
+
+	# Convert an ifconfig line to iproute2
+	local n="${#config[@]}"
+	for (( x=0; x<n; x++ )); do
+		case "${config[x]}" in
+			netmask)
+				config[0]="${config[0]}/$( netmask2cidr "${config[x+1]}" )"
+				unset config[x] config[x+1]
+				;;
+			mtu)
+				ip link set mtu "${config[x+1]}" dev "${iface}"
+				unset config[x] config[x+1]
+				;;
+		esac
+	done
+	config=( "${config[@]//pointopoint/peer}" )
+
+	# Always scope lo addresses as host unless specified otherwise
+	if [[ " ${config[@]} " != *" scope "* ]] ; then
+		is_loopback "${iface}" && config=( "${config[@]}" "scope host" )
+	fi
+
+	# IPv4 specifics
+	if [[ ${config[@]} == *.*.*.* ]] ; then
+		# Work out a broadcast if none supplied
+		[[ ${config[@]} != *" brd "* && ${config[@]} != *" broadcast "* ]] \
+			&& config=( "${config[@]}" "brd +" )
+	fi
+
+	# Ensure that the interface is up so we can add IPv6 addresses
+	interface_up "${iface}"
+
+	# Some kernels like to apply lo with an address when they are brought up
+	if [[ ${config[@]} == "127.0.0.1/8 brd 127.255.255.255 scope host" ]] ; then
+		is_loopback "${iface}" && ip addr del dev "${iface}" 127.0.0.1/8 2>/dev/null
+	fi
+
+	ip addr add dev "${iface}" ${config[@]}
+}
+
+# bool iproute2_pre_start(char *interface)
+#
+# Runs any pre_start stuff on our interface - just the MTU atm
+# We set MTU twice as it may be needed for DHCP - a dhcp client could
+# change it in error, so we set MTU in post start too
+iproute2_pre_start() {
+	local iface="$1"
+
+	interface_exists "${iface}" || return 0
+
+	local ifvar="$( bash_variable "$1" )"
+
+	# MTU support
+	local mtu="mtu_${ifvar}"
+	[[ -n ${!mtu} ]] && ip link set mtu "${!mtu}" dev "${iface}"
+
+	return 0
+}
+
+# bool iproute2_post_start(char *interface)
+#
+# Runs any post_start stuff on our interface and adds routes
+# Always returns 0
+iproute2_post_start() {
+	local iface="$1" ifvar="$( bash_variable "$1" )" x=""
+
+	iproute2_exists "${iface}" || return 0
+	
+	# Make sure interface is marked UP
+	iproute2_up "${iface}"
+
+	# MTU support
+	local mtu="mtu_${ifvar}"
+	[[ -n ${!mtu} ]] && ip link set mtu "${!mtu}" dev "${iface}"
+
+	local x="routes_${ifvar}[@]"
+	local -a routes=( "${!x}" )
+	local metric="metric_${ifvar}"
+
+	# Test for old style ipaddr variable
+	if [[ -z ${routes} ]] ; then
+		t="iproute_${ifvar}[@]"
+		routes=( "${!t}" )
+	fi
+
+	# Set routes with ip route -- this might also include default route
+	if [[ -n ${routes} ]] ; then
+		einfo "Adding routes"
+		eindent
+		for x in "${routes[@]}"; do
+			ebegin "${x}"
+
+			# Support net-tools routing too
+			x="${x//gw/via}"
+			x="${x//-A inet6/}"
+			x="${x//-net/}"
+			[[ " ${x} " == *" -host "* ]] && x="${x//-host/} scope host"
+
+			# Attempt to support net-tools route netmask option
+			netmask="${x##* netmask }"
+			if [[ -n ${netmask} && ${x} != "${netmask}" ]] ; then
+				netmask="${netmask%% *}"
+				x="${x// netmask ${netmask} / }"
+				local -a a=( ${x} )
+				a[0]="${a[0]}/$( netmask2cidr "${netmask}")"
+				x="${a[@]}"
+			fi
+
+			# Add a metric if we don't have one
+			[[ " ${x} " != *" metric "* ]] && x="${x} metric ${!metric}"
+
+			ip route append ${x} dev "${iface}"
+			eend $?
+		done
+		eoutdent
+	fi
+
+	# Flush the route cache
+	ip route flush cache dev "${iface}"
+
+	return 0
+}
+
+# void iproute2_post_stop(char* interface)
+iproute2_post_stop() {
+	local iface="$1" rule=""
+
+	iproute2_exists "${iface}" || return
+
+	# Flush the route cache
+	ip route flush cache dev "${iface}"
+}
+
+# vim: set ts=4 :