selftests: net: fix/improve ip_defrag selftest

[linux.git] / tools / testing / selftests / net / ip_defrag.sh

diff --git a/tools/testing/selftests/net/ip_defrag.sh b/tools/testing/selftests/net/ip_defrag.sh
index f34672796044952a9a7b7b02496ac08ed29bd885..7dd79a9efb1772945f7b9415d080e0fec5f55a71 100755 (executable)
--- a/tools/testing/selftests/net/ip_defrag.sh
+++ b/tools/testing/selftests/net/ip_defrag.sh
@@ -11,10 +11,17 @@ readonly NETNS="ns-$(mktemp -u XXXXXX)"
 setup() {
        ip netns add "${NETNS}"
        ip -netns "${NETNS}" link set lo up
+
        ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_high_thresh=9000000 >/dev/null 2>&1
        ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_low_thresh=7000000 >/dev/null 2>&1
+       ip netns exec "${NETNS}" sysctl -w net.ipv4.ipfrag_time=1 >/dev/null 2>&1
+
        ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_high_thresh=9000000 >/dev/null 2>&1
        ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_low_thresh=7000000 >/dev/null 2>&1
+       ip netns exec "${NETNS}" sysctl -w net.ipv6.ip6frag_time=1 >/dev/null 2>&1
+
+       # DST cache can get full with a lot of frags, with GC not keeping up with the test.
+       ip netns exec "${NETNS}" sysctl -w net.ipv6.route.max_size=65536 >/dev/null 2>&1
 }
 
 cleanup() {
@@ -27,7 +34,6 @@ setup
 echo "ipv4 defrag"
 ip netns exec "${NETNS}" ./ip_defrag -4
 
-
 echo "ipv4 defrag with overlaps"
 ip netns exec "${NETNS}" ./ip_defrag -4o
 
@@ -37,3 +43,4 @@ ip netns exec "${NETNS}" ./ip_defrag -6
 echo "ipv6 defrag with overlaps"
 ip netns exec "${NETNS}" ./ip_defrag -6o
 
+echo "all tests done"