From c1846bb19293f5f4ad91bf2a98961b894f28a643 Mon Sep 17 00:00:00 2001 From: Amit Cohen Date: Sun, 5 Jan 2020 18:20:55 +0200 Subject: [PATCH] selftests: forwarding: router: Add test case for source IP equals destination IP Add test case to check that packets are not dropped when they need to be routed and their source IP equals to their destination IP. Signed-off-by: Amit Cohen Acked-by: Jiri Pirko Signed-off-by: Ido Schimmel Signed-off-by: David S. Miller --- .../selftests/net/forwarding/router.sh | 44 +++++++++++++++++++ 1 file changed, 44 insertions(+) diff --git a/tools/testing/selftests/net/forwarding/router.sh b/tools/testing/selftests/net/forwarding/router.sh index e1f4d61453260..c894f7240417a 100755 --- a/tools/testing/selftests/net/forwarding/router.sh +++ b/tools/testing/selftests/net/forwarding/router.sh @@ -6,6 +6,8 @@ ALL_TESTS=" ping_ipv6 sip_in_class_e mc_mac_mismatch + ipv4_sip_equal_dip + ipv6_sip_equal_dip " NUM_NETIFS=4 @@ -243,6 +245,48 @@ mc_mac_mismatch() __mc_mac_mismatch "IPv6" "ipv6" 2001:db8:1::2 ff0e::3 "-6" } +ipv4_sip_equal_dip() +{ + RET=0 + + # Disable rpfilter to prevent packets to be dropped because of it. + sysctl_set net.ipv4.conf.all.rp_filter 0 + sysctl_set net.ipv4.conf.$rp1.rp_filter 0 + + tc filter add dev $rp2 egress protocol ip pref 1 handle 101 \ + flower src_ip 198.51.100.2 action pass + + $MZ $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec \ + -A 198.51.100.2 -b $rp1mac -B 198.51.100.2 -q + + tc_check_packets "dev $rp2 egress" 101 5 + check_err $? "Packets were dropped" + + log_test "Source IP is equal to destination IP: IPv4" + + tc filter del dev $rp2 egress protocol ip pref 1 handle 101 flower + sysctl_restore net.ipv4.conf.$rp1.rp_filter + sysctl_restore net.ipv4.conf.all.rp_filter +} + +ipv6_sip_equal_dip() +{ + RET=0 + + tc filter add dev $rp2 egress protocol ipv6 pref 1 handle 101 \ + flower src_ip 2001:db8:2::2 action pass + + $MZ -6 $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec \ + -A 2001:db8:2::2 -b $rp1mac -B 2001:db8:2::2 -q + + tc_check_packets "dev $rp2 egress" 101 5 + check_err $? "Packets were dropped" + + log_test "Source IP is equal to destination IP: IPv6" + + tc filter del dev $rp2 egress protocol ipv6 pref 1 handle 101 flower +} + trap cleanup EXIT setup_prepare -- 2.39.5