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openairinterface5g/targets/PROJECTS/GENERIC-LTE-EPC/interfaces.bash
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################################################################################
# OpenAirInterface
# Copyright(c) 1999 - 2014 Eurecom
#
# OpenAirInterface is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
#
# OpenAirInterface is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with OpenAirInterface.The full GNU General Public License is
# included in this distribution in the file called "COPYING". If not,
# see <http://www.gnu.org/licenses/>.
#
# Contact Information
# OpenAirInterface Admin: openair_admin@eurecom.fr
# OpenAirInterface Tech : openair_tech@eurecom.fr
# OpenAirInterface Dev : openair4g-devel@lists.eurecom.fr
#
# Address : Eurecom, Campus SophiaTech, 450 Route des Chappes, CS 50193 - 06904 Biot Sophia Antipolis cedex, FRANCE
#
################################################################################
# file interfaces.bash
# brief
# author Lionel Gauthier
# company Eurecom
# email: lionel.gauthier@eurecom.fr
#
cidr2mask() {
local i mask=""
local full_octets=$(($1/8))
local partial_octet=$(($1%8))
for ((i=0;i<4;i+=1)); do
if [ $i -lt $full_octets ]; then
mask+=255
elif [ $i -eq $full_octets ]; then
mask+=$((256 - 2**(8-$partial_octet)))
else
mask+=0
fi
test $i -lt 3 && mask+=.
done
echo $mask
}
# example: netcalc 192.168.12.100 255.255.255.0
netcalc(){
local IFS='.' ip i
local -a oct msk
read -ra oct <<<"$1"
read -ra msk <<<"$2"
for i in ${!oct[@]}; do
ip+=( "$(( oct[i] & msk[i] ))" )
done
echo "${ip[*]}"
}
# example: s
bcastcalc(){
local IFS='.' ip i
local -a oct msk
read -ra oct <<<"$1"
read -ra msk <<<"$2"
for i in ${!oct[@]}; do
ip+=( "$(( oct[i] + ( 255 - ( oct[i] | msk[i] ) ) ))" )
done
echo "${ip[*]}"
}
is_real_interface() {
my_bool=1
for var in "$@"
do
if [ "a$var" == "a" ]; then
return 0
fi
if [ "a$var" == "anone" ]; then
return 0
fi
IF=`cat /etc/udev/rules.d/70-persistent-net.rules | grep $var | sed 's/^.*NAME=//' | tr -d '"'`
if [ "$IF" == "$var" ]; then
if [ "a${var:0:3}" != "aeth" ]; then
if [ "a${var:0:4}" != "awlan" ]; then
if [ "a${var:0:4}" != "awifi" ]; then
my_bool=0;
fi
fi
fi
fi
done
return $my_bool
}
is_vlan_interface() {
my_bool=1
for var in "$@"
do
if [ "a$var" == "a" ]; then
return 0
fi
if [[ $var == *.* ]]
then
interface_name=`echo $var | cut -f1 -d '.'`
vlan=`echo $var | cut -f2 -d '.'`
IF=`cat /etc/udev/rules.d/70-persistent-net.rules | grep $interface_name | sed 's/^.*NAME=//' | tr -d '"'`
if [ "$IF" == "$interface_name" ]; then
if [ "a${interface_name:0:3}" != "aeth" ]; then
if [ "a${interface_name:0:4}" != "awlan" ]; then
if [ "a${interface_name:0:4}" != "awifi" ]; then
return 0;
fi
fi
fi
fi
else
return 0;
fi
done
return $my_bool
}
is_tun_interface() {
my_bool=1
for var in "$@"
do
if [ "a$var" == "a" ]; then
return 0
fi
if [[ "$IF" != *tun* ]]; then
return 0;
fi
bus_info=`ethtool -i $var | grep bus-info | cut -d: -f2`
bus_info=trim2 $bus_info
if [[ "$bus_info" != *tun* ]]; then
return 0;
fi
done
return $my_bool
}
is_openvswitch_interface() {
for var in "$@"
do
if [ "a$var" == "a" ]; then
return 0
fi
if [ "a${var:0:3}" != "aeth" ]; then
if [ "a${var:0:4}" != "awlan" ]; then
if [ "a${var:0:4}" != "awifi" ]; then
if [ "a${var:0:4}" != "anone" ]; then
if [ "a${var:0:3}" != "atun" ]; then
if [ "a${var:0:4}" != "avbox" ]; then
return 1;
fi
fi
fi
fi
fi
fi
done
return 0;
}
delete_tun_interface() {
is_tun_interface $1
if [ $? -eq 1 ]; then
ip link set $1 down > /dev/null 2>&1
openvpn --rmtun --dev $1 > /dev/null 2>&1
fi
}
delete_vlan_interface() {
is_vlan_interface $1
if [ $? -eq 1 ]; then
bash_exec "ifconfig $1 down "
bash_exec "vconfig rem $1 "
fi
}
delete_openvswitch_interface() {
is_openvswitch_interface $1
if [ $? -eq 1 ]; then
bash_exec "ifconfig $1 down "
bash_exec "tunctl -d $1 "
fi
}
create_tun_interface() {
is_tun_interface $1
if [ $? -eq 1 ]; then
bash_exec "openvpn --mktun --dev $1"
fi
}
create_vlan_interface() {
is_vlan_interface $1
if [ $? -eq 1 ]; then
interface_name=`echo $1 | cut -f1 -d '.'`
vlan=`echo $1 | cut -f2 -d '.'`
bash_exec "vconfig add $interface_name $vlan"
fi
}
create_openvswitch_interface() {
is_openvswitch_interface $1
if [ $? -eq 1 ]; then
bash_exec "tunctl -t $1"
fi
}
# arg1 = interface name
# arg2 = ipv4 addr cidr
# arg3 = netmask cidr
set_interface_up() {
interface=$1
address=$2
cidr_netmask=$3
if [ "a${interface:0:4}" == "anone" ]; then
return;
fi
bash_exec "ifconfig $interface up"
sync
netmask=`cidr2mask $cidr_netmask`
broadcast=`bcastcalc $address $netmask`
bash_exec "ip -4 addr add $address/$cidr_netmask broadcast $broadcast dev $interface"
sync
}
# input is hostname, you should have checked it is reachable by
# ping -c 1 $the_hostname > /dev/null || { echo_fatal "the_hostname does not respond to ping" >&2 ; }
get_ip() {
IP=$(python -c 'import socket; print socket.gethostbyname("'$1'")')
echo "$IP"
}
get_mac_router() {
echo_success "Resolving router.eur"
ping -c 1 router.eur > /dev/null || { echo_fatal "router.eur does not respond to ping" >&2 ; }
IP_ROUTER=$(get_ip router.eur)
#IP_ROUTER=`python -c 'import socket; print socket.gethostbyname("router.eur")'`
export MAC_ROUTER=`ip neigh show | grep $IP_ROUTER' ' | cut -d ' ' -f5 | tr -d ':'`
echo_success "ROUTER IP ADDRESS= $IP_ROUTER"
echo_success "ROUTER MAC ADDRESS= $MAC_ROUTER"
}
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