Commit 6e734f86 authored by Amit Cohen's avatar Amit Cohen Committed by David S. Miller
Browse files

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: default avatarAmit Cohen <amitc@mellanox.com>
Acked-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent e317b0f7

tools/testing/selftests/net/forwarding/router.sh

+44 −0
Original line number Diff line number Diff line
@@ -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

CRA Git | Maintained and supported by SUSTech CRA and CCSE