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

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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: Li Shuang <shuali@redhat.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Link: https://patch.msgid.link/1f354a1afd60f29bbbf02bd60cb52ecfc0b6bd17.1752848172.git.shuali@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Li Shuang 2025-07-18 22:16:12 +08:00 • committed by Jakub Kicinski
parent dd500e4aec
commit ff3fbcdd47
2 changed files with 65 additions and 1 deletions
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14
tools/testing/selftests/net/forwarding/lib.sh
View file

@ -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()
{

52
tools/testing/selftests/net/forwarding/tc_flower.sh
View file

@ -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]}