Commit 203ee5cd authored by Guillaume Nault's avatar Guillaume Nault Committed by David S. Miller
Browse files

selftests: tc: Add basic mpls_* matching support for tc-flower 



Add tests in tc_flower.sh for mpls_label, mpls_tc, mpls_bos and
mpls_ttl. For each keyword, test the minimal and maximal values.

Selectively skip these new mpls tests for tc versions that don't
support them.

Signed-off-by: default avatarGuillaume Nault <gnault@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 4098ced4

tools/testing/selftests/net/forwarding/config

+1 −0
Original line number Diff line number Diff line
@@ -10,6 +10,7 @@ CONFIG_NET_ACT_MIRRED=m 
CONFIG_NET_ACT_MPLS=m

CONFIG_NET_ACT_VLAN=m

CONFIG_NET_CLS_FLOWER=m

CONFIG_NET_CLS_MATCHALL=m

CONFIG_NET_SCH_INGRESS=m

CONFIG_NET_ACT_GACT=m

CONFIG_VETH=m

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

+15 −0
Original line number Diff line number Diff line
@@ -42,6 +42,21 @@ check_tc_version() 
	fi

}



# Old versions of tc don't understand "mpls_uc"

check_tc_mpls_support()

{

	local dev=$1; shift



	tc filter add dev $dev ingress protocol mpls_uc pref 1 handle 1 \

		matchall action pipe &> /dev/null

	if [[ $? -ne 0 ]]; then

		echo "SKIP: iproute2 too old; tc is missing MPLS support"

		return 1

	fi

	tc filter del dev $dev ingress protocol mpls_uc pref 1 handle 1 \

		matchall

}



check_tc_shblock_support()

{

	tc filter help 2>&1 | grep block &> /dev/null

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

+171 −1
Original line number Diff line number Diff line
@@ -3,7 +3,8 @@ 


ALL_TESTS="match_dst_mac_test match_src_mac_test match_dst_ip_test \

	match_src_ip_test match_ip_flags_test match_pcp_test match_vlan_test \

	match_ip_tos_test match_indev_test"

	match_ip_tos_test match_indev_test match_mpls_label_test \

	match_mpls_tc_test match_mpls_bos_test match_mpls_ttl_test"

NUM_NETIFS=2

source tc_common.sh

source lib.sh
@@ -334,6 +335,175 @@ match_indev_test() 
	log_test "indev match ($tcflags)"

}



# Unfortunately, mausezahn can't build MPLS headers when used in L2

# mode, so we have this function to build Label Stack Entries.

mpls_lse()

{

	local label=$1

	local tc=$2

	local bos=$3

	local ttl=$4



	printf "%02x %02x %02x %02x"                        \

		$((label >> 12))                            \

		$((label >> 4 & 0xff))                      \

		$((((label & 0xf) << 4) + (tc << 1) + bos)) \

		$ttl

}



match_mpls_label_test()

{

	local ethtype="88 47"; readonly ethtype

	local pkt



	RET=0



	check_tc_mpls_support $h2 || return 0



	tc filter add dev $h2 ingress protocol mpls_uc pref 1 handle 101 \

		flower $tcflags mpls_label 0 action drop

	tc filter add dev $h2 ingress protocol mpls_uc pref 2 handle 102 \

		flower $tcflags mpls_label 1048575 action drop



	pkt="$ethtype $(mpls_lse 1048575 0 1 255)"

	$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac "$pkt" -q



	tc_check_packets "dev $h2 ingress" 101 1

	check_fail $? "Matched on a wrong filter (1048575)"



	tc_check_packets "dev $h2 ingress" 102 1

	check_err $? "Did not match on correct filter (1048575)"



	pkt="$ethtype $(mpls_lse 0 0 1 255)"

	$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac "$pkt" -q



	tc_check_packets "dev $h2 ingress" 102 2

	check_fail $? "Matched on a wrong filter (0)"



	tc_check_packets "dev $h2 ingress" 101 1

	check_err $? "Did not match on correct filter (0)"



	tc filter del dev $h2 ingress protocol mpls_uc pref 2 handle 102 flower

	tc filter del dev $h2 ingress protocol mpls_uc pref 1 handle 101 flower



	log_test "mpls_label match ($tcflags)"

}



match_mpls_tc_test()

{

	local ethtype="88 47"; readonly ethtype

	local pkt



	RET=0



	check_tc_mpls_support $h2 || return 0



	tc filter add dev $h2 ingress protocol mpls_uc pref 1 handle 101 \

		flower $tcflags mpls_tc 0 action drop

	tc filter add dev $h2 ingress protocol mpls_uc pref 2 handle 102 \

		flower $tcflags mpls_tc 7 action drop



	pkt="$ethtype $(mpls_lse 0 7 1 255)"

	$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac "$pkt" -q



	tc_check_packets "dev $h2 ingress" 101 1

	check_fail $? "Matched on a wrong filter (7)"



	tc_check_packets "dev $h2 ingress" 102 1

	check_err $? "Did not match on correct filter (7)"



	pkt="$ethtype $(mpls_lse 0 0 1 255)"

	$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac "$pkt" -q



	tc_check_packets "dev $h2 ingress" 102 2

	check_fail $? "Matched on a wrong filter (0)"



	tc_check_packets "dev $h2 ingress" 101 1

	check_err $? "Did not match on correct filter (0)"



	tc filter del dev $h2 ingress protocol mpls_uc pref 2 handle 102 flower

	tc filter del dev $h2 ingress protocol mpls_uc pref 1 handle 101 flower



	log_test "mpls_tc match ($tcflags)"

}



match_mpls_bos_test()

{

	local ethtype="88 47"; readonly ethtype

	local pkt



	RET=0



	check_tc_mpls_support $h2 || return 0



	tc filter add dev $h2 ingress protocol mpls_uc pref 1 handle 101 \

		flower $tcflags mpls_bos 0 action drop

	tc filter add dev $h2 ingress protocol mpls_uc pref 2 handle 102 \

		flower $tcflags mpls_bos 1 action drop



	pkt="$ethtype $(mpls_lse 0 0 1 255)"

	$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac "$pkt" -q



	tc_check_packets "dev $h2 ingress" 101 1

	check_fail $? "Matched on a wrong filter (1)"



	tc_check_packets "dev $h2 ingress" 102 1

	check_err $? "Did not match on correct filter (1)"



	# Need to add a second label to properly mark the Bottom of Stack

	pkt="$ethtype $(mpls_lse 0 0 0 255) $(mpls_lse 0 0 1 255)"

	$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac "$pkt" -q



	tc_check_packets "dev $h2 ingress" 102 2

	check_fail $? "Matched on a wrong filter (0)"



	tc_check_packets "dev $h2 ingress" 101 1

	check_err $? "Did not match on correct filter (0)"



	tc filter del dev $h2 ingress protocol mpls_uc pref 2 handle 102 flower

	tc filter del dev $h2 ingress protocol mpls_uc pref 1 handle 101 flower



	log_test "mpls_bos match ($tcflags)"

}



match_mpls_ttl_test()

{

	local ethtype="88 47"; readonly ethtype

	local pkt



	RET=0



	check_tc_mpls_support $h2 || return 0



	tc filter add dev $h2 ingress protocol mpls_uc pref 1 handle 101 \

		flower $tcflags mpls_ttl 0 action drop

	tc filter add dev $h2 ingress protocol mpls_uc pref 2 handle 102 \

		flower $tcflags mpls_ttl 255 action drop



	pkt="$ethtype $(mpls_lse 0 0 1 255)"

	$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac "$pkt" -q



	tc_check_packets "dev $h2 ingress" 101 1

	check_fail $? "Matched on a wrong filter (255)"



	tc_check_packets "dev $h2 ingress" 102 1

	check_err $? "Did not match on correct filter (255)"



	pkt="$ethtype $(mpls_lse 0 0 1 0)"

	$MZ $h1 -c 1 -p 64 -a $h1mac -b $h2mac "$pkt" -q



	tc_check_packets "dev $h2 ingress" 102 2

	check_fail $? "Matched on a wrong filter (0)"



	tc_check_packets "dev $h2 ingress" 101 1

	check_err $? "Did not match on correct filter (0)"



	tc filter del dev $h2 ingress protocol mpls_uc pref 2 handle 102 flower

	tc filter del dev $h2 ingress protocol mpls_uc pref 1 handle 101 flower



	log_test "mpls_ttl match ($tcflags)"

}



setup_prepare()

{

	h1=${NETIFS[p1]}