From a63e10da42e757408d98732aaf5cf84bfd3a8276 Mon Sep 17 00:00:00 2001 From: Kui-Feng Lee Date: Tue, 15 Aug 2023 11:07:06 -0700 Subject: [PATCH] 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: Kui-Feng Lee Reviewed-by: David Ahern Signed-off-by: David S. Miller --- tools/testing/selftests/net/fib_tests.sh | 72 ++++++++++++++++++++++++++++++-- 1 file changed, 69 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh index 35d89df..c14ad6e 100755 --- a/tools/testing/selftests/net/fib_tests.sh +++ b/tools/testing/selftests/net/fib_tests.sh @@ -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 -- 2.7.4