Commit a63e10da authored by Kui-Feng Lee's avatar Kui-Feng Lee Committed by David S. Miller
Browse files

selftests: fib_tests: Add a test case for IPv6 garbage collection 



Add 1000 IPv6 routes with expiration time (w/ and w/o additional 5000
permanet routes in the background.)  Wait for a few seconds to make sure
they are removed correctly.

The expected output of the test looks like the following example.

> Fib6 garbage collection test
>     TEST: ipv6 route garbage collection [ OK ]

Signed-off-by: default avatarKui-Feng Lee <thinker.li@gmail.com>
Reviewed-by: default avatarDavid Ahern <dsahern@kernel.org>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3dec89b1

tools/testing/selftests/net/fib_tests.sh

+69 −3
Original line number Diff line number Diff line
@@ -9,13 +9,16 @@ ret=0 
ksft_skip=4



# all tests in this script. Can be overridden with -t option

TESTS="unregister down carrier nexthop suppress ipv6_notify ipv4_notify ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics ipv4_route_metrics ipv4_route_v6_gw rp_filter ipv4_del_addr ipv4_mangle ipv6_mangle ipv4_bcast_neigh"

TESTS="unregister down carrier nexthop suppress ipv6_notify ipv4_notify \

       ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics \

       ipv4_route_metrics ipv4_route_v6_gw rp_filter ipv4_del_addr \

       ipv4_mangle ipv6_mangle ipv4_bcast_neigh fib6_gc_test"



VERBOSE=0

PAUSE_ON_FAIL=no

PAUSE=no

IP="ip -netns ns1"

NS_EXEC="ip netns exec ns1"

IP="$(which ip) -netns ns1"

NS_EXEC="$(which ip) netns exec ns1"



which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
@@ -747,6 +750,68 @@ fib_notify_test() 
	cleanup &> /dev/null

}



fib6_gc_test()

{

	setup



	echo

	echo "Fib6 garbage collection test"

	set -e



	EXPIRE=3



	# Check expiration of routes every $EXPIRE seconds (GC)

	$NS_EXEC sysctl -wq net.ipv6.route.gc_interval=$EXPIRE



	$IP link add dummy_10 type dummy

	$IP link set dev dummy_10 up

	$IP -6 address add 2001:10::1/64 dev dummy_10



	$NS_EXEC sysctl -wq net.ipv6.route.flush=1



	# Temporary routes

	for i in $(seq 1 1000); do

	    # Expire route after $EXPIRE seconds

	    $IP -6 route add 2001:20::$i \

		via 2001:10::2 dev dummy_10 expires $EXPIRE

	done

	sleep $(($EXPIRE * 2))

	N_EXP_SLEEP=$($IP -6 route list |grep expires|wc -l)

	if [ $N_EXP_SLEEP -ne 0 ]; then

	    echo "FAIL: expected 0 routes with expires, got $N_EXP_SLEEP"

	    ret=1

	else

	    ret=0

	fi



	# Permanent routes

	for i in $(seq 1 5000); do

	    $IP -6 route add 2001:30::$i \

		via 2001:10::2 dev dummy_10

	done

	# Temporary routes

	for i in $(seq 1 1000); do

	    # Expire route after $EXPIRE seconds

	    $IP -6 route add 2001:20::$i \

		via 2001:10::2 dev dummy_10 expires $EXPIRE

	done

	sleep $(($EXPIRE * 2))

	N_EXP_SLEEP=$($IP -6 route list |grep expires|wc -l)

	if [ $N_EXP_SLEEP -ne 0 ]; then

	    echo "FAIL: expected 0 routes with expires," \

		 "got $N_EXP_SLEEP (5000 permanent routes)"

	    ret=1

	else

	    ret=0

	fi



	set +e



	log_test $ret 0 "ipv6 route garbage collection"



	cleanup &> /dev/null

}



fib_suppress_test()

{

	echo
@@ -2217,6 +2282,7 @@ do 
	ipv4_mangle)			ipv4_mangle_test;;

	ipv6_mangle)			ipv6_mangle_test;;

	ipv4_bcast_neigh)		ipv4_bcast_neigh_test;;

	fib6_gc_test|ipv6_gc)		fib6_gc_test;;



	help) echo "Test names: $TESTS"; exit 0;;

	esac