freebsd-dev/etc/rc.d/routing
Lars Engels 6c1a5e837d - Add descriptions to most of the rc scripts. Those are mostly taken from their
daemon's manpage and probably improved.
- Consistently use "filesystem" not "file system".

Approved by:	bapt, brueffer
Differential Revision:	D452
2016-04-23 16:10:54 +00:00

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#!/bin/sh
#
# Configure routing and miscellaneous network tunables
#
# $FreeBSD$
#
# PROVIDE: routing
# REQUIRE: netif ppp stf
# KEYWORD: nojailvnet
. /etc/rc.subr
. /etc/network.subr
name="routing"
desc="Routing setup"
start_cmd="routing_start doall"
stop_cmd="routing_stop"
extra_commands="options static"
static_cmd="routing_start static"
options_cmd="routing_start options"
ROUTE_CMD="/sbin/route"
routing_start()
{
local _cmd _af _if _a _ret
_cmd=$1
_af=$2
_if=$3
_ret=0
case $_if in
""|[Aa][Ll][Ll]|[Aa][Nn][Yy]) _if="" ;;
esac
case $_af in
""|[Aa][Ll][Ll]|[Aa][Nn][Yy])
for _a in inet inet6 atm; do
afexists $_a || continue
setroutes $_cmd $_a $_if || _ret=1
done
;;
*)
if afexists $_af; then
setroutes $_cmd $_af $_if || _ret=1
else
err 1 "Unsupported address family: $_af."
fi
;;
esac
return $_ret
}
routing_stop()
{
local _af _if _a
_af=$1
_if=$2
case $_if in
""|[Aa][Ll][Ll]|[Aa][Nn][Yy]) _if="" ;;
esac
case $_af in
""|[Aa][Ll][Ll]|[Aa][Nn][Yy])
for _a in inet inet6 atm; do
afexists $_a || continue
eval static_${_a} delete $_if
# When $_if is specified, do not flush routes.
if ! [ -n "$_if" ]; then
eval routing_stop_${_a}
fi
done
;;
*)
if afexists $_af; then
eval static_${_af} delete $_if
# When $_if is specified, do not flush routes.
if ! [ -n "$_if" ]; then
eval routing_stop_${_af}
fi
else
err 1 "Unsupported address family: $_af."
fi
;;
esac
}
setroutes()
{
case $1 in
static)
static_$2 add $3
;;
options)
options_$2
;;
doall)
static_$2 add $3
options_$2
;;
esac
}
routing_stop_inet()
{
${ROUTE_CMD} -n flush -inet
}
routing_stop_inet6()
{
local i
${ROUTE_CMD} -n flush -inet6
for i in `list_net_interfaces`; do
if ipv6if $i; then
ifconfig $i inet6 -defaultif
fi
done
}
routing_stop_atm()
{
return 0
}
static_inet()
{
local _action _if _skip
_action=$1
_if=$2
# Add default route.
case ${defaultrouter} in
[Nn][Oo] | '')
;;
*)
static_routes="${static_routes} _default"
route__default="default ${defaultrouter}"
;;
esac
# Install configured routes.
if [ -n "${static_routes}" ]; then
for i in ${static_routes}; do
_skip=0
if [ -n "$_if" ]; then
case $i in
*:$_if) ;;
*) _skip=1 ;;
esac
fi
if [ $_skip = 0 ]; then
route_args=`get_if_var ${i%:*} route_IF`
if [ -n "$route_args" ]; then
${ROUTE_CMD} ${_action} ${route_args}
else
warn "route_${i%:*} not found."
fi
fi
done
fi
}
static_inet6()
{
local _action _if _skip fibmod fibs allfibs
_action=$1
_if=$2
# get the number of FIBs supported.
fibs=$((`${SYSCTL_N} net.fibs` - 1))
allfibs=`${SYSCTL_N} net.add_addr_allfibs`
if [ "$fibs" -gt 0 ] && [ "$allfibs" -ne 0 ]; then
fibmod="-fib 0-$fibs"
else
fibmod=
fi
# Add pre-defined static routes first.
ipv6_static_routes="_v4mapped _v4compat ${ipv6_static_routes}"
ipv6_static_routes="_lla _llma ${ipv6_static_routes}"
# disallow "internal" addresses to appear on the wire
ipv6_route__v4mapped="::ffff:0.0.0.0 -prefixlen 96 ::1 -reject ${fibmod}"
ipv6_route__v4compat="::0.0.0.0 -prefixlen 96 ::1 -reject ${fibmod}"
# Disallow link-local unicast packets without outgoing scope
# identifiers. However, if you set "ipv6_default_interface",
# for the host case, you will allow to omit the identifiers.
# Under this configuration, the packets will go to the default
# interface.
ipv6_route__lla="fe80:: -prefixlen 10 ::1 -reject ${fibmod}"
ipv6_route__llma="ff02:: -prefixlen 16 ::1 -reject ${fibmod}"
# Add default route.
case ${ipv6_defaultrouter} in
[Nn][Oo] | '')
;;
*)
ipv6_static_routes="${ipv6_static_routes} _default"
ipv6_route__default="default ${ipv6_defaultrouter}"
;;
esac
# Install configured routes.
if [ -n "${ipv6_static_routes}" ]; then
for i in ${ipv6_static_routes}; do
_skip=0
if [ -n "$_if" ]; then
case $i in
*:$_if) ;;
*) _skip=1 ;;
esac
fi
if [ $_skip = 0 ]; then
ipv6_route_args=`get_if_var ${i%:*} ipv6_route_IF`
if [ -n "$ipv6_route_args" ]; then
${ROUTE_CMD} ${_action} \
-inet6 ${ipv6_route_args}
else
warn "route_${i%:*} not found"
fi
fi
done
fi
# Install the "default interface" to kernel, which will be used
# as the default route when there's no router.
# Disable installing the default interface when we act
# as router to avoid conflict between the default
# router list and the manual configured default route.
if checkyesno ipv6_gateway_enable; then
return
fi
case "${ipv6_default_interface}" in
[Nn][Oo] | [Nn][Oo][Nn][Ee])
return
;;
[Aa][Uu][Tt][Oo] | "")
for i in ${ipv6_network_interfaces}; do
case $i in
[Nn][Oo][Nn][Ee])
return
;;
lo0)
continue
;;
esac
laddr=`network6_getladdr $i exclude_tentative`
case ${laddr} in
'')
;;
*)
ipv6_default_interface=$i
break
;;
esac
done
;;
esac
ifconfig ${ipv6_default_interface} inet6 defaultif
sysctl net.inet6.ip6.use_defaultzone=1
}
static_atm()
{
local _action i route_args
_action=$1
if [ -n "${natm_static_routes}" ]; then
for i in ${natm_static_routes}; do
route_args=`get_if_var $i route_IF`
if [ -n "$route_args" ]; then
atmconfig natm ${_action} ${route_args}
else
warn "route_${i} not found."
fi
done
fi
}
ropts_init()
{
if [ -z "${_ropts_initdone}" ]; then
echo -n "Additional $1 routing options:"
_ropts_initdone=yes
fi
}
options_inet()
{
_ropts_initdone=
if checkyesno icmp_bmcastecho; then
ropts_init inet
echo -n ' broadcast ping responses=YES'
${SYSCTL} net.inet.icmp.bmcastecho=1 > /dev/null
else
${SYSCTL} net.inet.icmp.bmcastecho=0 > /dev/null
fi
if checkyesno icmp_drop_redirect; then
ropts_init inet
echo -n ' ignore ICMP redirect=YES'
${SYSCTL} net.inet.icmp.drop_redirect=1 > /dev/null
else
${SYSCTL} net.inet.icmp.drop_redirect=0 > /dev/null
fi
if checkyesno icmp_log_redirect; then
ropts_init inet
echo -n ' log ICMP redirect=YES'
${SYSCTL} net.inet.icmp.log_redirect=1 > /dev/null
else
${SYSCTL} net.inet.icmp.log_redirect=0 > /dev/null
fi
if checkyesno gateway_enable; then
ropts_init inet
echo -n ' gateway=YES'
${SYSCTL} net.inet.ip.forwarding=1 > /dev/null
else
${SYSCTL} net.inet.ip.forwarding=0 > /dev/null
fi
if checkyesno forward_sourceroute; then
ropts_init inet
echo -n ' do source routing=YES'
${SYSCTL} net.inet.ip.sourceroute=1 > /dev/null
else
${SYSCTL} net.inet.ip.sourceroute=0 > /dev/null
fi
if checkyesno accept_sourceroute; then
ropts_init inet
echo -n ' accept source routing=YES'
${SYSCTL} net.inet.ip.accept_sourceroute=1 > /dev/null
else
${SYSCTL} net.inet.ip.accept_sourceroute=0 > /dev/null
fi
if checkyesno arpproxy_all; then
ropts_init inet
echo -n ' ARP proxyall=YES'
${SYSCTL} net.link.ether.inet.proxyall=1 > /dev/null
else
${SYSCTL} net.link.ether.inet.proxyall=0 > /dev/null
fi
[ -n "${_ropts_initdone}" ] && echo '.'
}
options_inet6()
{
_ropts_initdone=
if checkyesno ipv6_gateway_enable; then
ropts_init inet6
echo -n ' gateway=YES'
${SYSCTL} net.inet6.ip6.forwarding=1 > /dev/null
else
${SYSCTL} net.inet6.ip6.forwarding=0 > /dev/null
fi
[ -n "${_ropts_initdone}" ] && echo '.'
}
options_atm()
{
_ropts_initdone=
[ -n "${_ropts_initdone}" ] && echo '.'
}
load_rc_config $name
run_rc_command "$@"