LINUX.ORG.RU
ФорумAdmin

Попинайте скрипты (подключение нескольких йотамодемов)


0

1

Есть задача подцепить на маршрутзатор два (а может и более) модемов samsung swc-200 usb. При этом 1 - yota, второй - comstar. Получилась примерно такая обёртка для запуска из udev:

#!/bin/sh
. /usr/local/etc/wimax_connect

echo $lock

#if there is lock file wait until it will be released
while true;
do
	if [ ! -f $lock ]
	then
		break
	fi
	sleep 10
done

#set lock file
touch $lock
echo lock set

#commandline arguments from udev
#bus number of new modem
busnum=$1
#device number of new modem
devnum=$2

#echo $busnum $devnum > /tmp/wimax.debug

#save current main routing table
ip route show | sed 's/.*/ip route add & table $bkp_rt/' | sh
echo rt backuped

#get new modem's hardware address
/sbin/madwimax -v -l $if_info --exact-device=$busnum/$devnum &
mw_pid=$!
sleep 10
kill $mw_pid
echo modem info wrote

mac=$(grep MAC: $if_info | head -n1 | sed 's/^[^ ]* //')
rm -f $if_info
echo -n $mac > $lock
echo modem\'s mac - $mac

#get commandlines from modem_db
cmdline="$(grep $mac $modem_db | head -n1 | sed 's/^[a-fA-F0-9:]* table[0-9]* //')"
echo $cmdline
rt_table="$(grep $mac $modem_db | head -n1 | sed 's/^[^ ]* \(table[0-9]*\) .*$/\1/')"
echo $rt_table
#append current device bus/dev numbers to commandline
cmdline="$cmdline --exact-device=$busnum/$devnum"
echo $cmdline

#clear old records about new modem if exists
[ -f $modem_cur ] && grep -v $mac $modem_cur > $modem_cur.new
echo $mac $rt_table $cmdline
echo $mac $rt_table $cmdline >> $modem_cur.new
mv $modem_cur.new $modem_cur

#clear main routing table before start madwimax
ip route flush table main

#start madwimax with $cmdline and save pid
echo "nohup madwimax $cmdline &"
sleep 5
nohup madwimax $cmdline 2>&1 > /dev/null &
echo $! > "$pid"mw_"$rt_table".pid

#after start madwimax dhclient-exit-hook will handle recived by dhcp routes
При запуске удевом - madwimax дохнет при повторном включении. Если запускать вручную с правильными busnum/devnum, то вроде ничего.

dhcp-enter-hook:

#this hook saves original main routing table and sets lock if not set
source /usr/local/etc/wimax.connect

export mac=$(ip link show | grep $interface -A1 | tail -n1 | \
	sed 's/^.*ether \(.*\) brd.*/\1/')
echo $mac - entered dhclient enter hook >> /tmp/dhcp-enter.debug

function mw_set_lock() {
	echo $mac > $lock
	ip route flush table $bkp_rt
	ip route show | sed 's/.*/ip route add & table $bkp_rt/' | sh
	ip route flush table main
}

if grep -q $mac $modem_db;
then 
	if [ x$reason=="xBOUND" -o x$reason=="xRENEW" -o x$reason=="xREBIND" \
		-o x$reason=="xREBOOT" ]
	then	
		if [ ! -f $lock ]
		then
			mw_set_lock
		else
			echo entering lock waiting loop >> /tmp/dhcp-enter.debug
			echo $mac >> /tmp/dhcp-enter.debug
			while [ -z $(cat $lock) -o $(cat $lock) != $mac ]
			do
				echo . $(cat $lock) >> /tmp/dhcp-enter.debug
				sleep 10
			done
			mw_set_lock
			echo exiting lock waiting loop >> /tmp/dhcp-enter.debug
		fi
	fi
fi
echo $mac - exited dhclient enter hook >> /tmp/dhcp-enter.debug
dhcp-exit-hook:
#this hook handles recived by dhcp routes and removes wimax_connect lock file
source /usr/local/etc/wimax.connect

#get mac address of interface
export mac=$(ip link show | grep $interface -A1 | tail -n1 | \
	sed 's/^.*ether \(.*\) brd.*/\1/')
echo $mac - entered dhclient exit hook >> /tmp/dhclient-exit.debug

#if interface is modem listed in modem_db - move routing tables
if grep -q $mac $modem_db;
then 
	#get name of routing table for the modem
	export $rt_table=$(grep $mac $modem_db | head -n1 | \
		sed 's/^[^ ]* \(table[0-9]*\) .*$/\1/')
	export $mark=$(echo $rt_table | sed 's/table\([0-9]*\)/\1/')
echo $mark, $rt_table exit hook >> /tmp/dhclient-exit.debug
 
	if [ x$reason=="xBOUND" -o x$reason=="xRENEW" -o x$reason=="xREBIND" \
		-o x$reason=="xREBOOT" ]
	then
		#copy dhcp routes to modem's routing table
		ip route flush table $rt_table
		ip route show | sed 's/.*/ip route add & table $rt_table/' | sh

		#restore main routing table
		ip route flush table main
		ip route show table $bkp_rt | sed 's/.*/ip route add &/' | sh
		ip route flush table $bkp_rt

		#set default routing rules if not set
		ip rule show | grep -q "fwmark 0x$mark lookup $rt_table" || \
			ip rule add fwmark $mark table $rt_table

		/usr/local/bin/monitor.sh $interface $mac $table $mark		

		rm -f $lock
	fi
fi

а что мешает воткнуть их одновременно и разруливать уже потом маршрутизацией?

tazhate ★★★★★ ()
Вы не можете добавлять комментарии в эту тему. Тема перемещена в архив.