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FreeBSD hs32.drive.ne.jp 9.1-RELEASE FreeBSD 9.1-RELEASE #1: Wed Jan 14 12:18:08 JST 2015 root@hs32.drive.ne.jp:/sys/amd64/compile/hs32 amd64 |
| Current File : //usr/src/etc/network.subr |
#
# Copyright (c) 2003 The FreeBSD Project. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD: release/9.1.0/etc/network.subr 242189 2012-10-27 20:17:59Z hrs $
#
#
# Subroutines commonly used from network startup scripts.
# Requires that rc.conf be loaded first.
#
# ifn_start ifn
# Bring up and configure an interface. If some configuration is
# applied, print the interface configuration.
#
ifn_start()
{
local ifn cfg
ifn="$1"
cfg=1
[ -z "$ifn" ] && err 1 "ifn_start called without an interface"
ifscript_up ${ifn} && cfg=0
ifconfig_up ${ifn} && cfg=0
afexists inet && ipv4_up ${ifn} && cfg=0
afexists inet6 && ipv6_up ${ifn} && cfg=0
afexists ipx && ipx_up ${ifn} && cfg=0
childif_create ${ifn} && cfg=0
return $cfg
}
# ifn_stop ifn
# Shutdown and de-configure an interface. If action is taken,
# print the interface name.
#
ifn_stop()
{
local ifn cfg
ifn="$1"
cfg=1
[ -z "$ifn" ] && err 1 "ifn_stop called without an interface"
afexists ipx && ipx_down ${ifn} && cfg=0
afexists inet6 && ipv6_down ${ifn} && cfg=0
afexists inet && ipv4_down ${ifn} && cfg=0
ifconfig_down ${ifn} && cfg=0
ifscript_down ${ifn} && cfg=0
childif_destroy ${ifn} && cfg=0
return $cfg
}
# ifconfig_up if
# Evaluate ifconfig(8) arguments for interface $if and
# run ifconfig(8) with those arguments. It returns 0 if
# arguments were found and executed or 1 if the interface
# had no arguments. Pseudo arguments DHCP and WPA are handled
# here.
#
ifconfig_up()
{
local _cfg _ipv6_opts ifconfig_args
_cfg=1
# Make sure lo0 always comes up.
if [ "$1" = "lo0" ]; then
_cfg=0
fi
# ifconfig_IF
ifconfig_args=`ifconfig_getargs $1`
if [ -n "${ifconfig_args}" ]; then
eval ifconfig $1 ${ifconfig_args}
_cfg=0
fi
# inet6 specific
if afexists inet6; then
if checkyesno ipv6_activate_all_interfaces; then
_ipv6_opts="-ifdisabled"
elif [ "$1" != "lo0" ]; then
_ipv6_opts="ifdisabled"
fi
# backward compatibility: $ipv6_enable
case $ipv6_enable in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
if ! checkyesno ipv6_gateway_enable; then
_ipv6_opts="${_ipv6_opts} accept_rtadv"
fi
;;
esac
case $ipv6_cpe_wanif in
$1)
_ipv6_opts="${_ipv6_opts} -no_radr accept_rtadv"
;;
esac
if [ -n "${_ipv6_opts}" ]; then
ifconfig $1 inet6 ${_ipv6_opts}
fi
# ifconfig_IF_ipv6
ifconfig_args=`ifconfig_getargs $1 ipv6`
if [ -n "${ifconfig_args}" ]; then
# backward compatibility: inet6 keyword
case "${ifconfig_args}" in
:*|[0-9a-fA-F]*:*)
warn "\$ifconfig_$1_ipv6 needs " \
"\"inet6\" keyword for an IPv6 address."
ifconfig_args="inet6 ${ifconfig_args}"
;;
esac
ifconfig $1 inet6 -ifdisabled
eval ifconfig $1 ${ifconfig_args}
_cfg=0
fi
# backward compatiblity: $ipv6_ifconfig_IF
ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF`
if [ -n "${ifconfig_args}" ]; then
warn "\$ipv6_ifconfig_$1 is obsolete." \
" Use ifconfig_$1_ipv6 instead."
ifconfig $1 inet6 -ifdisabled
eval ifconfig $1 inet6 ${ifconfig_args}
_cfg=0
fi
fi
if [ ${_cfg} -eq 0 ]; then
ifconfig $1 up
fi
if wpaif $1; then
/etc/rc.d/wpa_supplicant start $1
_cfg=0 # XXX: not sure this should count
fi
if dhcpif $1; then
if [ $_cfg -ne 0 ] ; then
ifconfig $1 up
fi
if syncdhcpif $1; then
/etc/rc.d/dhclient start $1
fi
_cfg=0
fi
return $_cfg
}
# ifconfig_down if
# returns 1 if wpa_supplicant or dhclient was stopped or
# the interface exists.
#
ifconfig_down()
{
local _cfg
_cfg=1
if wpaif $1; then
/etc/rc.d/wpa_supplicant stop $1
_cfg=0
fi
if dhcpif $1; then
/etc/rc.d/dhclient stop $1
_cfg=0
fi
if ifexists $1; then
ifconfig $1 down
_cfg=0
fi
return $_cfg
}
# get_if_var if var [default]
# Return the value of the pseudo-hash corresponding to $if where
# $var is a string containg the sub-string "IF" which will be
# replaced with $if after the characters defined in _punct are
# replaced with '_'. If the variable is unset, replace it with
# $default if given.
get_if_var()
{
local _if _punct _punct_c _var _default prefix suffix
if [ $# -ne 2 -a $# -ne 3 ]; then
err 3 'USAGE: get_if_var name var [default]'
fi
_if=$1
_punct=". - / +"
for _punct_c in $_punct; do
_if=`ltr ${_if} ${_punct_c} '_'`
done
_var=$2
_default=$3
prefix=${_var%%IF*}
suffix=${_var##*IF}
eval echo \${${prefix}${_if}${suffix}-${_default}}
}
# _ifconfig_getargs if [af]
# Prints the arguments for the supplied interface to stdout.
# Returns 1 if empty. In general, ifconfig_getargs should be used
# outside this file.
_ifconfig_getargs()
{
local _ifn _af
_ifn=$1
_af=${2+_$2}
if [ -z "$_ifn" ]; then
return 1
fi
get_if_var $_ifn ifconfig_IF$_af "$ifconfig_DEFAULT"
}
# ifconfig_getargs if [af]
# Takes the result from _ifconfig_getargs and removes pseudo
# args such as DHCP and WPA.
ifconfig_getargs()
{
local _tmpargs _arg _args
_tmpargs=`_ifconfig_getargs $1 $2`
if [ $? -eq 1 ]; then
return 1
fi
_args=
for _arg in $_tmpargs; do
case $_arg in
[Dd][Hh][Cc][Pp]) ;;
[Nn][Oo][Aa][Uu][Tt][Oo]) ;;
[Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
[Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp]) ;;
[Ww][Pp][Aa]) ;;
*)
_args="$_args $_arg"
;;
esac
done
echo $_args
}
# autoif
# Returns 0 if the interface should be automatically configured at
# boot time and 1 otherwise.
autoif()
{
local _tmpargs _arg
_tmpargs=`_ifconfig_getargs $1`
for _arg in $_tmpargs; do
case $_arg in
[Nn][Oo][Aa][Uu][Tt][Oo])
return 1
;;
esac
done
return 0
}
# dhcpif if
# Returns 0 if the interface is a DHCP interface and 1 otherwise.
dhcpif()
{
local _tmpargs _arg
_tmpargs=`_ifconfig_getargs $1`
if noafif $1; then
return 1
fi
for _arg in $_tmpargs; do
case $_arg in
[Dd][Hh][Cc][Pp])
return 0
;;
[Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
return 0
;;
[Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
return 0
;;
esac
done
return 1
}
# syncdhcpif
# Returns 0 if the interface should be configured synchronously and
# 1 otherwise.
syncdhcpif()
{
local _tmpargs _arg
_tmpargs=`_ifconfig_getargs $1`
if noafif $1; then
return 1
fi
for _arg in $_tmpargs; do
case $_arg in
[Nn][Oo][Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
return 1
;;
[Ss][Yy][Nn][Cc][Dd][Hh][Cc][Pp])
return 0
;;
esac
done
checkyesno synchronous_dhclient
}
# wpaif if
# Returns 0 if the interface is a WPA interface and 1 otherwise.
wpaif()
{
local _tmpargs _arg
_tmpargs=`_ifconfig_getargs $1`
for _arg in $_tmpargs; do
case $_arg in
[Ww][Pp][Aa])
return 0
;;
esac
done
return 1
}
# afexists af
# Returns 0 if the address family is enabled in the kernel
# 1 otherwise.
afexists()
{
local _af
_af=$1
case ${_af} in
inet|inet6)
check_kern_features ${_af}
;;
ipx)
${SYSCTL_N} net.ipx > /dev/null 2>&1
;;
atm)
if [ -x /sbin/atmconfig ]; then
/sbin/atmconfig diag list > /dev/null 2>&1
else
return 1
fi
;;
*)
err 1 "afexists(): Unsupported address family: $_af"
;;
esac
}
# noafif if
# Returns 0 if the interface has no af configuration and 1 otherwise.
noafif()
{
local _if
_if=$1
case $_if in
pflog[0-9]*|\
pfsync[0-9]*|\
an[0-9]*|\
ath[0-9]*|\
ipw[0-9]*|\
ipfw[0-9]*|\
iwi[0-9]*|\
iwn[0-9]*|\
ral[0-9]*|\
wi[0-9]*|\
wl[0-9]*|\
wpi[0-9]*)
return 0
;;
esac
return 1
}
# ipv6if if
# Returns 0 if the interface should be configured for IPv6 and
# 1 otherwise.
ipv6if()
{
local _if _tmpargs i
_if=$1
if ! afexists inet6; then
return 1
fi
# lo0 is always IPv6-enabled
case $_if in
lo0)
return 0
;;
esac
case "${ipv6_network_interfaces}" in
$_if|"$_if "*|*" $_if"|*" $_if "*|[Aa][Uu][Tt][Oo])
# True if $ifconfig_IF_ipv6 is defined.
_tmpargs=`_ifconfig_getargs $_if ipv6`
if [ -n "${_tmpargs}" ]; then
return 0
fi
# backward compatibility: True if $ipv6_ifconfig_IF is defined.
_tmpargs=`get_if_var $_if ipv6_ifconfig_IF`
if [ -n "${_tmpargs}" ]; then
return 0
fi
;;
esac
return 1
}
# ipv6_autoconfif if
# Returns 0 if the interface should be configured for IPv6 with
# Stateless Address Configuration; 1 otherwise.
ipv6_autoconfif()
{
local _if _tmpargs _arg
_if=$1
case $_if in
lo0|\
stf[0-9]*|\
faith[0-9]*|\
lp[0-9]*|\
sl[0-9]*)
return 1
;;
esac
if noafif $_if; then
return 1
fi
if ! ipv6if $_if; then
return 1
fi
if checkyesno ipv6_gateway_enable; then
return 1
fi
_tmpargs=`get_if_var $_if ipv6_prefix_IF`
if [ -n "${_tmpargs}" ]; then
return 1
fi
# backward compatibility: $ipv6_enable
case $ipv6_enable in
[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
if checkyesno ipv6_gateway_enable; then
return 1
else
return 0
fi
;;
esac
_tmpargs=`_ifconfig_getargs $_if ipv6`
for _arg in $_tmpargs; do
case $_arg in
accept_rtadv)
return 0
;;
esac
done
# backward compatibility: $ipv6_ifconfig_IF
_tmpargs=`get_if_var $_if ipv6_ifconfig_IF`
for _arg in $_tmpargs; do
case $_arg in
accept_rtadv)
return 0
;;
esac
done
return 1
}
# ifexists if
# Returns 0 if the interface exists and 1 otherwise.
ifexists()
{
[ -z "$1" ] && return 1
ifconfig -n $1 > /dev/null 2>&1
}
# ipv4_up if
# add IPv4 addresses to the interface $if
ipv4_up()
{
local _if _ret
_if=$1
_ret=1
# Add 127.0.0.1/8 to lo0 unless otherwise specified.
if [ "${_if}" = "lo0" ]; then
ifconfig_args=`get_if_var ${_if} ifconfig_IF`
if [ -z "${ifconfig_args}" ]; then
ifconfig ${_if} inet 127.0.0.1/8 alias
fi
fi
ifalias_up ${_if} inet && _ret=0
ipv4_addrs_common ${_if} alias && _ret=0
return $_ret
}
# ipv6_up if
# add IPv6 addresses to the interface $if
ipv6_up()
{
local _if _ret
_if=$1
_ret=1
if ! ipv6if $_if; then
return 0
fi
ifalias_up ${_if} inet6 && _ret=0
ipv6_prefix_hostid_addr_common ${_if} alias && _ret=0
ipv6_accept_rtadv_up ${_if} && _ret=0
# wait for DAD
sleep `${SYSCTL_N} net.inet6.ip6.dad_count`
sleep 1
return $_ret
}
# ipv4_down if
# remove IPv4 addresses from the interface $if
ipv4_down()
{
local _if _ifs _ret inetList oldifs _inet
_if=$1
_ifs="^"
_ret=1
inetList="`ifconfig ${_if} | grep 'inet ' | tr "\n" "$_ifs"`"
oldifs="$IFS"
IFS="$_ifs"
for _inet in $inetList ; do
# get rid of extraneous line
[ -z "$_inet" ] && break
_inet=`expr "$_inet" : '.*\(inet \([0-9]\{1,3\}\.\)\{3\}[0-9]\{1,3\}\).*'`
IFS="$oldifs"
ifconfig ${_if} ${_inet} delete
IFS="$_ifs"
_ret=0
done
IFS="$oldifs"
ifalias_down ${_if} inet && _ret=0
ipv4_addrs_common ${_if} -alias && _ret=0
return $_ret
}
# ipv6_down if
# remove IPv6 addresses from the interface $if
ipv6_down()
{
local _if _ifs _ret inetList oldifs _inet6
_if=$1
_ifs="^"
_ret=1
if ! ipv6if $_if; then
return 0
fi
ipv6_accept_rtadv_down ${_if} && _ret=0
ipv6_prefix_hostid_addr_common ${_if} -alias && _ret=0
ifalias_down ${_if} inet6 && _ret=0
inetList="`ifconfig ${_if} | grep 'inet6 ' | tr "\n" "$_ifs"`"
oldifs="$IFS"
IFS="$_ifs"
for _inet6 in $inetList ; do
# get rid of extraneous line
[ -z "$_inet6" ] && break
_inet6=`expr "$_inet6" : '.*\(inet6 \([0-9a-f:]*\)\).*'`
IFS="$oldifs"
ifconfig ${_if} ${_inet6} -alias
IFS="$_ifs"
_ret=0
done
IFS="$oldifs"
return $_ret
}
# ipv4_addrs_common if action
# Evaluate the ifconfig_if_ipv4 arguments for interface $if and
# use $action to add or remove IPv4 addresses from $if.
ipv4_addrs_common()
{
local _ret _if _action _cidr _cidr_addr
local _ipaddr _netmask _range _ipnet _iplow _iphigh _ipcount
_ret=1
_if=$1
_action=$2
# get ipv4-addresses
cidr_addr=`get_if_var $_if ipv4_addrs_IF`
for _cidr in ${cidr_addr}; do
_ipaddr=${_cidr%%/*}
_netmask="/"${_cidr##*/}
_range=${_ipaddr##*.}
_ipnet=${_ipaddr%.*}
_iplow=${_range%-*}
_iphigh=${_range#*-}
# clear netmask when removing aliases
if [ "${_action}" = "-alias" ]; then
_netmask=""
fi
_ipcount=${_iplow}
while [ "${_ipcount}" -le "${_iphigh}" ]; do
eval "ifconfig ${_if} ${_action} ${_ipnet}.${_ipcount}${_netmask}"
_ipcount=$((${_ipcount}+1))
_ret=0
# only the first ipaddr in a subnet need the real netmask
if [ "${_action}" != "-alias" ]; then
_netmask="/32"
fi
done
done
return $_ret
}
# ifalias_up if af
# Configure aliases for network interface $if.
# It returns 0 if at least one alias was configured or
# 1 if there were none.
#
ifalias_up()
{
local _ret
_ret=1
case "$2" in
inet)
_ret=`ifalias_ipv4_up "$1"`
;;
inet6)
_ret=`ifalias_ipv6_up "$1"`
;;
esac
return $_ret
}
# ifalias_ipv4_up if
# Helper function for ifalias_up(). Handles IPv4.
#
ifalias_ipv4_up()
{
local _ret alias ifconfig_args
_ret=1
# ifconfig_IF_aliasN which starts with "inet"
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
inet\ *)
ifconfig $1 ${ifconfig_args} alias && _ret=0
;;
inet6\ *)
;;
"")
break
;;
*)
warn "\$ifconfig_$1_alias${alias} needs " \
"\"inet\" keyword for an IPv4 address."
ifconfig $1 ${ifconfig_args} alias && _ret=0
;;
esac
alias=$((${alias} + 1))
done
return $_ret
}
# ifalias_ipv6_up if
# Helper function for ifalias_up(). Handles IPv6.
#
ifalias_ipv6_up()
{
local _ret alias ifconfig_args
_ret=1
# ifconfig_IF_aliasN which starts with "inet6"
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
inet6\ *)
ifconfig $1 ${ifconfig_args} alias && _ret=0
;;
"")
break
;;
esac
alias=$((${alias} + 1))
done
# backward compatibility: ipv6_ifconfig_IF_aliasN.
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
"")
break
;;
*)
ifconfig $1 inet6 ${ifconfig_args} alias && _ret=0
warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \
" Use ifconfig_$1_aliasN instead."
;;
esac
alias=$((${alias} + 1))
done
return $_ret
}
# ifalias_down if af
# Remove aliases for network interface $if.
# It returns 0 if at least one alias was removed or
# 1 if there were none.
#
ifalias_down()
{
local _ret
_ret=1
case "$2" in
inet)
_ret=`ifalias_ipv4_down "$1"`
;;
inet6)
_ret=`ifalias_ipv6_down "$1"`
;;
esac
return $_ret
}
# ifalias_ipv4_down if
# Helper function for ifalias_down(). Handles IPv4.
#
ifalias_ipv4_down()
{
local _ret alias ifconfig_args
_ret=1
# ifconfig_IF_aliasN which starts with "inet"
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
inet\ *)
ifconfig $1 ${ifconfig_args} -alias && _ret=0
;;
"")
break
;;
esac
alias=$((${alias} + 1))
done
return $_ret
}
# ifalias_ipv6_down if
# Helper function for ifalias_down(). Handles IPv6.
#
ifalias_ipv6_down()
{
local _ret alias ifconfig_args
_ret=1
# ifconfig_IF_aliasN which starts with "inet6"
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
inet6\ *)
ifconfig $1 ${ifconfig_args} -alias && _ret=0
;;
"")
break
;;
esac
alias=$((${alias} + 1))
done
# backward compatibility: ipv6_ifconfig_IF_aliasN.
alias=0
while : ; do
ifconfig_args=`get_if_var $1 ipv6_ifconfig_IF_alias${alias}`
case "${ifconfig_args}" in
"")
break
;;
*)
ifconfig $1 inet6 ${ifconfig_args} -alias && _ret=0
warn "\$ipv6_ifconfig_$1_alias${alias} is obsolete." \
" Use ifconfig_$1_aliasN instead."
;;
esac
alias=$((${alias} + 1))
done
return $_ret
}
# ipv6_prefix_hostid_addr_common if action
# Add or remove IPv6 prefix + hostid addr on the interface $if
#
ipv6_prefix_hostid_addr_common()
{
local _if _action prefix laddr hostid j address
_if=$1
_action=$2
prefix=`get_if_var ${_if} ipv6_prefix_IF`
if [ -n "${prefix}" ]; then
laddr=`network6_getladdr ${_if}`
hostid=${laddr#fe80::}
hostid=${hostid%\%*}
for j in ${prefix}; do
address=$j\:${hostid}
ifconfig ${_if} inet6 ${address} prefixlen 64 ${_action}
# if I am a router, add subnet router
# anycast address (RFC 2373).
if checkyesno ipv6_gateway_enable; then
ifconfig ${_if} inet6 $j:: prefixlen 64 \
${_action} anycast
fi
done
fi
}
# ipv6_accept_rtadv_up if
# Enable accepting Router Advertisement and send Router
# Solicitation message
ipv6_accept_rtadv_up()
{
if ipv6_autoconfif $1; then
ifconfig $1 inet6 accept_rtadv up
if ! checkyesno rtsold_enable; then
rtsol ${rtsol_flags} $1
fi
fi
}
# ipv6_accept_rtadv_down if
# Disable accepting Router Advertisement
ipv6_accept_rtadv_down()
{
if ipv6_autoconfif $1; then
ifconfig $1 inet6 -accept_rtadv
fi
}
# ifscript_up if
# Evaluate a startup script for the $if interface.
# It returns 0 if a script was found and processed or
# 1 if no script was found.
#
ifscript_up()
{
if [ -r /etc/start_if.$1 ]; then
. /etc/start_if.$1
return 0
else
return 1
fi
}
# ifscript_down if
# Evaluate a shutdown script for the $if interface.
# It returns 0 if a script was found and processed or
# 1 if no script was found.
#
ifscript_down()
{
if [ -r /etc/stop_if.$1 ]; then
. /etc/stop_if.$1
return 0
else
return 1
fi
}
# clone_up
# Create cloneable interfaces.
#
clone_up()
{
local _prefix _list ifn
_prefix=
_list=
# create_args_IF
for ifn in ${cloned_interfaces}; do
ifconfig ${ifn} create `get_if_var ${ifn} create_args_IF`
if [ $? -eq 0 ]; then
_list="${_list}${_prefix}${ifn}"
[ -z "$_prefix" ] && _prefix=' '
fi
done
debug "Cloned: ${_list}"
}
# clone_down
# Destroy cloned interfaces. Destroyed interfaces are echoed to
# standard output.
#
clone_down()
{
local _prefix _list ifn
_prefix=
_list=
for ifn in ${cloned_interfaces}; do
ifconfig -n ${ifn} destroy
if [ $? -eq 0 ]; then
_list="${_list}${_prefix}${ifn}"
[ -z "$_prefix" ] && _prefix=' '
fi
done
debug "Destroyed clones: ${_list}"
}
# childif_create
# Create and configure child interfaces. Return 0 if child
# interfaces are created.
#
childif_create()
{
local cfg child child_vlans child_wlans create_args debug_flags ifn i
cfg=1
ifn=$1
# Create wireless interfaces
child_wlans=`get_if_var $ifn wlans_IF`
for child in ${child_wlans}; do
create_args="wlandev $ifn `get_if_var $child create_args_IF`"
debug_flags="`get_if_var $child wlandebug_IF`"
if expr $child : 'wlan[0-9][0-9]*$' >/dev/null 2>&1; then
ifconfig $child create ${create_args} && cfg=0
if [ -n "${debug_flags}" ]; then
wlandebug -i $child ${debug_flags}
fi
else
i=`ifconfig wlan create ${create_args}`
if [ -n "${debug_flags}" ]; then
wlandebug -i $i ${debug_flags}
fi
ifconfig $i name $child && cfg=0
fi
if autoif $child; then
ifn_start $child
fi
done
# Create vlan interfaces
child_vlans=`get_if_var $ifn vlans_IF`
if [ -n "${child_vlans}" ]; then
load_kld if_vlan
fi
for child in ${child_vlans}; do
if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then
child="${ifn}.${child}"
create_args=`get_if_var $child create_args_IF`
ifconfig $child create ${create_args} && cfg=0
else
create_args="vlandev $ifn `get_if_var $child create_args_IF`"
if expr $child : 'vlan[0-9][0-9]*$' >/dev/null 2>&1; then
ifconfig $child create ${create_args} && cfg=0
else
i=`ifconfig vlan create ${create_args}`
ifconfig $i name $child && cfg=0
fi
fi
if autoif $child; then
ifn_start $child
fi
done
return ${cfg}
}
# childif_destroy
# Destroy child interfaces.
#
childif_destroy()
{
local cfg child child_vlans child_wlans ifn
cfg=1
child_wlans=`get_if_var $ifn wlans_IF`
for child in ${child_wlans}; do
if ! ifexists $child; then
continue
fi
ifconfig -n $child destroy && cfg=0
done
child_vlans=`get_if_var $ifn vlans_IF`
for child in ${child_vlans}; do
if expr $child : '[1-9][0-9]*$' >/dev/null 2>&1; then
child="${ifn}.${child}"
fi
if ! ifexists $child; then
continue
fi
ifconfig -n $child destroy && cfg=0
done
return ${cfg}
}
# ng_mkpeer
# Create netgraph nodes.
#
ng_mkpeer()
{
ngctl -f - 2> /dev/null <<EOF
mkpeer $*
msg dummy nodeinfo
EOF
}
# ng_create_one
# Create netgraph nodes.
#
ng_create_one()
{
local t
ng_mkpeer $* | while read line; do
t=`expr "${line}" : '.* name="\([a-z]*[0-9]*\)" .*'`
if [ -n "${t}" ]; then
echo ${t}
return
fi
done
}
# gif_up
# Create gif(4) tunnel interfaces.
gif_up()
{
local i peers
for i in ${gif_interfaces}; do
peers=`get_if_var $i gifconfig_IF`
case ${peers} in
'')
continue
;;
*)
if expr $i : 'gif[0-9][0-9]*$' >/dev/null 2>&1; then
ifconfig $i create >/dev/null 2>&1
else
gif=`ifconfig gif create`
ifconfig $gif name $i
fi
ifconfig $i tunnel ${peers}
ifconfig $i up
;;
esac
done
}
# ng_fec_create ifn
# Configure Fast EtherChannel for interface $ifn. Returns 0 if
# FEC arguments were found and configured; returns !0 otherwise.
ng_fec_create()
{
local req_iface iface bogus
req_iface="$1"
ngctl shutdown ${req_iface}: > /dev/null 2>&1
bogus=""
while true; do
iface=`ng_create_one fec dummy fec`
if [ -z "${iface}" ]; then
exit 2
fi
if [ "${iface}" = "${req_iface}" ]; then
break
fi
bogus="${bogus} ${iface}"
done
for iface in ${bogus}; do
ngctl shutdown ${iface}:
done
}
# fec_up
# Create Fast EtherChannel interfaces.
fec_up()
{
local i j
for i in ${fec_interfaces}; do
ng_fec_create $i
for j in `get_if_var $i fecconfig_IF`; do
case ${j} in
'')
continue
;;
*)
ngctl msg ${i}: add_iface "\"${j}\""
;;
esac
done
done
}
# ipx_up ifn
# Configure any IPX addresses for interface $ifn. Returns 0 if
# IPX arguments were found and configured; returns 1 otherwise.
#
ipx_up()
{
local ifn
ifn="$1"
# ifconfig_IF_ipx
ifconfig_args=`_ifconfig_getargs $ifn ipx`
if [ -n "${ifconfig_args}" ]; then
ifconfig ${ifn} ${ifconfig_args}
return 0
fi
return 1
}
# ipx_down ifn
# Remove IPX addresses for interface $ifn. Returns 0 if IPX
# addresses were found and unconfigured. It returns 1, otherwise.
#
ipx_down()
{
local _if _ifs _ret ipxList oldifs _ipx
_if=$1
_ifs="^"
_ret=1
ipxList="`ifconfig ${_if} | grep 'ipx ' | tr "\n" "$_ifs"`"
oldifs="$IFS"
IFS="$_ifs"
for _ipx in $ipxList ; do
# get rid of extraneous line
[ -z "$_ipx" ] && break
_ipx=`expr "$_ipx" : '.*\(ipx [0-9a-h]\{1,8\}H*\.[0-9a-h]\{1,12\}\).*'`
IFS="$oldifs"
ifconfig ${_if} ${_ipx} delete
IFS="$_ifs"
_ret=0
done
IFS="$oldifs"
return $_ret
}
# ifnet_rename
# Rename all requested interfaces.
#
ifnet_rename()
{
local _if _ifname
# ifconfig_IF_name
for _if in `ifconfig -l`; do
_ifname=`get_if_var $_if ifconfig_IF_name`
if [ ! -z "$_ifname" ]; then
ifconfig $_if name $_ifname
fi
done
return 0
}
# list_net_interfaces type
# List all network interfaces. The type of interface returned
# can be controlled by the type argument. The type
# argument can be any of the following:
# nodhcp - all interfaces, excluding DHCP configured interfaces
# dhcp - list only DHCP configured interfaces
# noautoconf - all interfaces, excluding IPv6 Stateless
# Address Autoconf configured interfaces
# autoconf - list only IPv6 Stateless Address Autoconf
# configured interfaces
# If no argument is specified all network interfaces are output.
# Note that the list will include cloned interfaces if applicable.
# Cloned interfaces must already exist to have a chance to appear
# in the list if ${network_interfaces} is set to `auto'.
#
list_net_interfaces()
{
local type _tmplist _list _autolist _lo _if
type=$1
# Get a list of ALL the interfaces and make lo0 first if it's there.
#
_tmplist=
case ${network_interfaces} in
[Aa][Uu][Tt][Oo])
_autolist="`ifconfig -l`"
_lo=
for _if in ${_autolist} ; do
if autoif $_if; then
if [ "$_if" = "lo0" ]; then
_lo="lo0 "
else
_tmplist="${_tmplist} ${_if}"
fi
fi
done
_tmplist="${_lo}${_tmplist# }"
;;
*)
_tmplist="${network_interfaces} ${cloned_interfaces}"
# lo0 is effectively mandatory, so help prevent foot-shooting
#
case "$_tmplist" in
lo0|'lo0 '*|*' lo0'|*' lo0 '*) ;; # This is fine, do nothing
*) _tmplist="lo0 ${_tmplist}" ;;
esac
;;
esac
_list=
case "$type" in
nodhcp)
for _if in ${_tmplist} ; do
if ! dhcpif $_if && \
[ -n "`_ifconfig_getargs $_if`" ]; then
_list="${_list# } ${_if}"
fi
done
;;
dhcp)
for _if in ${_tmplist} ; do
if dhcpif $_if; then
_list="${_list# } ${_if}"
fi
done
;;
noautoconf)
for _if in ${_tmplist} ; do
if ! ipv6_autoconfif $_if && \
[ -n "`_ifconfig_getargs $_if ipv6`" ]; then
_list="${_list# } ${_if}"
fi
done
;;
autoconf)
for _if in ${_tmplist} ; do
if ipv6_autoconfif $_if; then
_list="${_list# } ${_if}"
fi
done
;;
*)
_list=${_tmplist}
;;
esac
echo $_list
return 0
}
# get_default_if -address_family
# Get the interface of the default route for the given address family.
# The -address_family argument must be suitable passing to route(8).
#
get_default_if()
{
local routeget oldifs defif line
defif=
oldifs="$IFS"
IFS="
"
for line in `route -n get $1 default 2>/dev/null`; do
case $line in
*interface:*)
defif=${line##*: }
;;
esac
done
IFS=${oldifs}
echo $defif
}
# hexdigit arg
# Echo decimal number $arg (single digit) in hexadecimal format.
hexdigit()
{
printf '%x\n' "$1"
}
# hexprint arg
# Echo decimal number $arg (multiple digits) in hexadecimal format.
hexprint()
{
printf '%x\n' "$1"
}
is_wired_interface()
{
local media
case `ifconfig $1 2>/dev/null` in
*media:?Ethernet*) media=Ethernet ;;
esac
test "$media" = "Ethernet"
}
# network6_getladdr if [flag]
# Echo link-local address from $if if any.
# If flag is defined, tentative ones will be excluded.
network6_getladdr()
{
local proto addr rest
ifconfig $1 2>/dev/null | while read proto addr rest; do
case ${proto} in
inet6)
case ${addr} in
fe80::*)
if [ -z "$2" ]; then
echo ${addr}
return
fi
case ${rest} in
*tentative*)
continue
;;
*)
echo ${addr}
return
esac
esac
esac
done
}