Commit ff3fbcdd authored by Li Shuang's avatar Li Shuang Committed by Jakub Kicinski
Browse files

selftests: tc: Add generic erspan_opts matching support for tc-flower 



Add test cases to tc_flower.sh to validate generic matching on ERSPAN
options. Both ERSPAN Type II and Type III are covered.

Also add check_tc_erspan_support() to verify whether tc supports
erspan_opts.

Signed-off-by: default avatarLi Shuang <shuali@redhat.com>
Reviewed-by: default avatarXin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/1f354a1afd60f29bbbf02bd60cb52ecfc0b6bd17.1752848172.git.shuali@redhat.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent dd500e4a

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

+14 −0
Original line number Diff line number Diff line
@@ -142,6 +142,20 @@ check_tc_version() 
	fi

}



check_tc_erspan_support()

{

	local dev=$1; shift



	tc filter add dev $dev ingress pref 1 handle 1 flower \

		erspan_opts 1:0:0:0 &> /dev/null

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

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

		return $ksft_skip

	fi

	tc filter del dev $dev ingress pref 1 handle 1 flower \

		erspan_opts 1:0:0:0 &> /dev/null

}



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

check_tc_mpls_support()

{

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

+51 −1
Original line number Diff line number Diff line
@@ -6,7 +6,7 @@ ALL_TESTS="match_dst_mac_test match_src_mac_test match_dst_ip_test \ 
	match_ip_tos_test match_indev_test match_ip_ttl_test

	match_mpls_label_test \

	match_mpls_tc_test match_mpls_bos_test match_mpls_ttl_test \

	match_mpls_lse_test"

	match_mpls_lse_test match_erspan_opts_test"

NUM_NETIFS=2

source tc_common.sh

source lib.sh
@@ -676,6 +676,56 @@ match_mpls_lse_test() 
	log_test "mpls lse match ($tcflags)"

}



match_erspan_opts_test()

{

	RET=0



	check_tc_erspan_support $h2 || return 0



	# h1 erspan setup

	tunnel_create erspan1 erspan 192.0.2.1 192.0.2.2 dev $h1 seq key 1001 \

		tos C ttl 64 erspan_ver 1 erspan 6789 # ERSPAN Type II

	tunnel_create erspan2 erspan 192.0.2.1 192.0.2.2 dev $h1 seq key 1002 \

		tos C ttl 64 erspan_ver 2 erspan_dir egress erspan_hwid 63 \

		# ERSPAN Type III

	ip link set dev erspan1 master v$h1

	ip link set dev erspan2 master v$h1

	# h2 erspan setup

	ip link add ep-ex type erspan ttl 64 external # To collect tunnel info

	ip link set ep-ex up

	ip link set dev ep-ex master v$h2

	tc qdisc add dev ep-ex clsact



	# ERSPAN Type II [decap direction]

	tc filter add dev ep-ex ingress protocol ip  handle 101 flower \

		$tcflags enc_src_ip 192.0.2.1 enc_dst_ip 192.0.2.2 \

		enc_key_id 1001 erspan_opts 1:6789:0:0 \

		action drop

	# ERSPAN Type III [decap direction]

	tc filter add dev ep-ex ingress protocol ip  handle 102 flower \

		$tcflags enc_src_ip 192.0.2.1 enc_dst_ip 192.0.2.2 \

		enc_key_id 1002 erspan_opts 2:0:1:63 action drop



	ep1mac=$(mac_get erspan1)

	$MZ erspan1 -c 1 -p 64 -a $ep1mac -b $h2mac -t ip -q

	tc_check_packets "dev ep-ex ingress" 101 1

	check_err $? "ERSPAN Type II"



	ep2mac=$(mac_get erspan2)

	$MZ erspan2 -c 1 -p 64 -a $ep1mac -b $h2mac -t ip -q

	tc_check_packets "dev ep-ex ingress" 102 1

	check_err $? "ERSPAN Type III"



	# h2 erspan cleanup

	tc qdisc del dev ep-ex clsact

	tunnel_destroy ep-ex

	# h1 erspan cleanup

	tunnel_destroy erspan2 # ERSPAN Type III

	tunnel_destroy erspan1 # ERSPAN Type II



	log_test "erspan_opts match ($tcflags)"

}



setup_prepare()

{

	h1=${NETIFS[p1]}