selftests: forwarding: Ditch skip_on_veth()

Since the selftests that are not supposed to run on veth pairs are now in
their own dedicated directory, the skip_on_veth logic can go away. Drop it
from the selftests, and from lib.sh.

Cc: Danielle Ratson <[e-mail]>
Signed-off-by: Petr Machata <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Jakub Kicinski <[e-mail]>

tools/testing/selftests/drivers/net/hw/ethtool.sh

···
 	ethtool -s $h1 autoneg on
 }
 
-skip_on_veth
-
 trap cleanup EXIT
 
 setup_prepare

tools/testing/selftests/drivers/net/hw/ethtool_extended_state.sh

···
 	ip link set dev $swp3 down
 }
 
-skip_on_veth
-
 setup_prepare
 
 tests_run

tools/testing/selftests/drivers/net/hw/hw_stats_l3.sh

···
 
 used=$(ip -j stats show dev $rp1.200 group offload subgroup hw_stats_info |
 	   jq '.[].info.l3_stats.used')
-kind=$(ip -j -d link show dev $rp1 |
-	   jq -r '.[].linkinfo.info_kind')
-if [[ $used != true ]]; then
-	if [[ $kind == veth ]]; then
-		log_test_skip "l3_stats not offloaded on veth interface"
-		EXIT_STATUS=$ksft_skip
-	else
-		RET=1 log_test "l3_stats not offloaded"
-	fi
-else
-	tests_run
-fi
+[[ $used = true ]]
+check_err $? "hw_stats_info.used=$used"
+log_test "l3_stats offloaded"
+tests_run
 
 exit $EXIT_STATUS

tools/testing/selftests/drivers/net/hw/hw_stats_l3_gre.sh

···
 	test_stats g2a rx
 }
 
-skip_on_veth
-
 trap cleanup EXIT
 
 setup_prepare

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

···
 	fi
 }
 
-skip_on_veth()
-{
-	local kind=$(ip -j -d link show dev ${NETIFS[p1]} |
-		jq -r '.[].linkinfo.info_kind')
-
-	if [[ $kind == veth ]]; then
-		echo "SKIP: Test cannot be run with veth pairs"
-		exit $ksft_skip
-	fi
-}
-
 if [[ "$(id -u)" -ne 0 ]]; then
 	echo "SKIP: need root privileges"
 	exit $ksft_skip