diff mbox series

[net-next,v8,2/2] selftests: fib_tests: Add a test case for IPv6 garbage collection

Message ID 20230815180706.772638-3-thinker.li@gmail.com (mailing list archive)
State Accepted
Delegated to: Netdev Maintainers
Headers show
Series Remove expired routes with a separated list of routes. | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 9 this patch: 9
netdev/cc_maintainers warning 2 maintainers not CCed: shuah@kernel.org linux-kselftest@vger.kernel.org
netdev/build_clang success Errors and warnings before: 9 this patch: 9
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success net selftest script(s) already in Makefile
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 9 this patch: 9
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 94 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Kui-Feng Lee Aug. 15, 2023, 6:07 p.m. UTC 
From: Kui-Feng Lee <thinker.li@gmail.com>

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 <thinker.li@gmail.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
---
 tools/testing/selftests/net/fib_tests.sh | 72 +++++++++++++++++++++++-
 1 file changed, 69 insertions(+), 3 deletions(-)
diff mbox series

Patch

diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh
index 35d89dfa6f11..c14ad6e75c1e 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