selftests: forwarding: Move several selftests

The tests in net/forwarding are generally expected to be HW-independent.
There are however several tests that, while not depending on any HW in
particular, nevertheless depend on being used on HW interfaces. Placing
these selftests to net/forwarding is confusing, because the selftest will
just report it can't be run on veth pairs. At the same time, placing them
to a particular driver's selftests subdirectory would be wrong.

Instead, add a new directory, drivers/net/hw, where these generic but HW
independent selftests should be placed. Move over several such tests
including one helper library.

Since typically these tests will not be expected to run, omit the directory
drivers/net/hw from the TARGETS list in selftests/Makefile. Retain a
Makefile in the new directory itself, so that a user can make -C into that
directory and act on those tests explicitly.

Cc: Roger Quadros <rogerq@kernel.org>
Cc: Tobias Waldekranz <tobias@waldekranz.com>
Cc: Danielle Ratson <danieller@nvidia.com>
Cc: Davide Caratti <dcaratti@redhat.com>
Cc: Johannes Nixdorf <jnixdorf-oss@avm.de>
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Petr Machata <petrm@nvidia.com>
Link: https://lore.kernel.org/r/e11dae1f62703059e9fc2240004288ac7cc15756.1711464583.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 0 insertions, 340 deletions

diff --git a/tools/testing/selftests/net/forwarding/ethtool_mm.sh b/tools/testing/selftests/net/forwarding/ethtool_mm.sh
deleted file mode 100755
index 50d5bfb17ef1..000000000000
--- a/tools/testing/selftests/net/forwarding/ethtool_mm.sh
+++ /dev/null
@@ -1,340 +0,0 @@
-#!/bin/bash
-# SPDX-License-Identifier: GPL-2.0
-
-ALL_TESTS="
-	manual_with_verification_h1_to_h2
-	manual_with_verification_h2_to_h1
-	manual_without_verification_h1_to_h2
-	manual_without_verification_h2_to_h1
-	manual_failed_verification_h1_to_h2
-	manual_failed_verification_h2_to_h1
-	lldp
-"
-
-NUM_NETIFS=2
-REQUIRE_MZ=no
-PREEMPTIBLE_PRIO=0
-source lib.sh
-
-traffic_test()
-{
-	local if=$1; shift
-	local src=$1; shift
-	local num_pkts=10000
-	local before=
-	local after=
-	local delta=
-
-	if [ ${has_pmac_stats[$if]} = false ]; then
-		src="aggregate"
-	fi
-
-	before=$(ethtool_std_stats_get $if "eth-mac" "FramesTransmittedOK" $src)
-
-	$MZ $if -q -c $num_pkts -p 64 -b bcast -t ip -R $PREEMPTIBLE_PRIO
-
-	after=$(ethtool_std_stats_get $if "eth-mac" "FramesTransmittedOK" $src)
-
-	delta=$((after - before))
-
-	# Allow an extra 1% tolerance for random packets sent by the stack
-	[ $delta -ge $num_pkts ] && [ $delta -le $((num_pkts + 100)) ]
-}
-
-manual_with_verification()
-{
-	local tx=$1; shift
-	local rx=$1; shift
-
-	RET=0
-
-	# It isn't completely clear from IEEE 802.3-2018 Figure 99-5: Transmit
-	# Processing state diagram whether the "send_r" variable (send response
-	# to verification frame) should be taken into consideration while the
-	# MAC Merge TX direction is disabled. That being said, at least the
-	# NXP ENETC does not, and requires tx-enabled on in order to respond to
-	# the link partner's verification frames.
-	ethtool --set-mm $rx tx-enabled on
-	ethtool --set-mm $tx verify-enabled on tx-enabled on
-
-	# Wait for verification to finish
-	sleep 1
-
-	ethtool --json --show-mm $tx | jq -r '.[]."verify-status"' | \
-		grep -q 'SUCCEEDED'
-	check_err "$?" "Verification did not succeed"
-
-	ethtool --json --show-mm $tx | jq -r '.[]."tx-active"' | grep -q 'true'
-	check_err "$?" "pMAC TX is not active"
-
-	traffic_test $tx "pmac"
-	check_err "$?" "Traffic did not get sent through $tx's pMAC"
-
-	ethtool --set-mm $tx verify-enabled off tx-enabled off
-	ethtool --set-mm $rx tx-enabled off
-
-	log_test "Manual configuration with verification: $tx to $rx"
-}
-
-manual_with_verification_h1_to_h2()
-{
-	manual_with_verification $h1 $h2
-}
-
-manual_with_verification_h2_to_h1()
-{
-	manual_with_verification $h2 $h1
-}
-
-manual_without_verification()
-{
-	local tx=$1; shift
-	local rx=$1; shift
-
-	RET=0
-
-	ethtool --set-mm $tx verify-enabled off tx-enabled on
-
-	ethtool --json --show-mm $tx | jq -r '.[]."verify-status"' | \
-		grep -q 'DISABLED'
-	check_err "$?" "Verification is not disabled"
-
-	ethtool --json --show-mm $tx | jq -r '.[]."tx-active"' | grep -q 'true'
-	check_err "$?" "pMAC TX is not active"
-
-	traffic_test $tx "pmac"
-	check_err "$?" "Traffic did not get sent through $tx's pMAC"
-
-	ethtool --set-mm $tx verify-enabled off tx-enabled off
-
-	log_test "Manual configuration without verification: $tx to $rx"
-}
-
-manual_without_verification_h1_to_h2()
-{
-	manual_without_verification $h1 $h2
-}
-
-manual_without_verification_h2_to_h1()
-{
-	manual_without_verification $h2 $h1
-}
-
-manual_failed_verification()
-{
-	local tx=$1; shift
-	local rx=$1; shift
-
-	RET=0
-
-	ethtool --set-mm $rx pmac-enabled off
-	ethtool --set-mm $tx verify-enabled on tx-enabled on
-
-	# Wait for verification to time out
-	sleep 1
-
-	ethtool --json --show-mm $tx | jq -r '.[]."verify-status"' | \
-		grep -q 'SUCCEEDED'
-	check_fail "$?" "Verification succeeded when it shouldn't have"
-
-	ethtool --json --show-mm $tx | jq -r '.[]."tx-active"' | grep -q 'true'
-	check_fail "$?" "pMAC TX is active when it shouldn't have"
-
-	traffic_test $tx "emac"
-	check_err "$?" "Traffic did not get sent through $tx's eMAC"
-
-	ethtool --set-mm $tx verify-enabled off tx-enabled off
-	ethtool --set-mm $rx pmac-enabled on
-
-	log_test "Manual configuration with failed verification: $tx to $rx"
-}
-
-manual_failed_verification_h1_to_h2()
-{
-	manual_failed_verification $h1 $h2
-}
-
-manual_failed_verification_h2_to_h1()
-{
-	manual_failed_verification $h2 $h1
-}
-
-smallest_supported_add_frag_size()
-{
-	local iface=$1
-	local rx_min_frag_size=
-
-	rx_min_frag_size=$(ethtool --json --show-mm $iface | \
-		jq '.[]."rx-min-frag-size"')
-
-	if [ $rx_min_frag_size -le 60 ]; then
-		echo 0
-	elif [ $rx_min_frag_size -le 124 ]; then
-		echo 1
-	elif [ $rx_min_frag_size -le 188 ]; then
-		echo 2
-	elif [ $rx_min_frag_size -le 252 ]; then
-		echo 3
-	else
-		echo "$iface: RX min frag size $rx_min_frag_size cannot be advertised over LLDP"
-		exit 1
-	fi
-}
-
-expected_add_frag_size()
-{
-	local iface=$1
-	local requested=$2
-	local min=$(smallest_supported_add_frag_size $iface)
-
-	[ $requested -le $min ] && echo $min || echo $requested
-}
-
-lldp_change_add_frag_size()
-{
-	local add_frag_size=$1
-	local pattern=
-
-	lldptool -T -i $h1 -V addEthCaps addFragSize=$add_frag_size >/dev/null
-	# Wait for TLVs to be received
-	sleep 2
-	pattern=$(printf "Additional fragment size: %d" \
-			 $(expected_add_frag_size $h1 $add_frag_size))
-	lldptool -i $h2 -t -n -V addEthCaps | grep -q "$pattern"
-}
-
-lldp()
-{
-	RET=0
-
-	systemctl start lldpad
-
-	# Configure the interfaces to receive and transmit LLDPDUs
-	lldptool -L -i $h1 adminStatus=rxtx >/dev/null
-	lldptool -L -i $h2 adminStatus=rxtx >/dev/null
-
-	# Enable the transmission of Additional Ethernet Capabilities TLV
-	lldptool -T -i $h1 -V addEthCaps enableTx=yes >/dev/null
-	lldptool -T -i $h2 -V addEthCaps enableTx=yes >/dev/null
-
-	# Wait for TLVs to be received
-	sleep 2
-
-	lldptool -i $h1 -t -n -V addEthCaps | \
-		grep -q "Preemption capability active"
-	check_err "$?" "$h1 pMAC TX is not active"
-
-	lldptool -i $h2 -t -n -V addEthCaps | \
-		grep -q "Preemption capability active"
-	check_err "$?" "$h2 pMAC TX is not active"
-
-	lldp_change_add_frag_size 3
-	check_err "$?" "addFragSize 3"
-
-	lldp_change_add_frag_size 2
-	check_err "$?" "addFragSize 2"
-
-	lldp_change_add_frag_size 1
-	check_err "$?" "addFragSize 1"
-
-	lldp_change_add_frag_size 0
-	check_err "$?" "addFragSize 0"
-
-	traffic_test $h1 "pmac"
-	check_err "$?" "Traffic did not get sent through $h1's pMAC"
-
-	traffic_test $h2 "pmac"
-	check_err "$?" "Traffic did not get sent through $h2's pMAC"
-
-	systemctl stop lldpad
-
-	log_test "LLDP"
-}
-
-h1_create()
-{
-	ip link set dev $h1 up
-
-	tc qdisc add dev $h1 root mqprio num_tc 4 map 0 1 2 3 \
-		queues 1@0 1@1 1@2 1@3 \
-		fp P E E E \
-		hw 1
-
-	ethtool --set-mm $h1 pmac-enabled on tx-enabled off verify-enabled off
-}
-
-h2_create()
-{
-	ip link set dev $h2 up
-
-	ethtool --set-mm $h2 pmac-enabled on tx-enabled off verify-enabled off
-
-	tc qdisc add dev $h2 root mqprio num_tc 4 map 0 1 2 3 \
-		queues 1@0 1@1 1@2 1@3 \
-		fp P E E E \
-		hw 1
-}
-
-h1_destroy()
-{
-	ethtool --set-mm $h1 pmac-enabled off tx-enabled off verify-enabled off
-
-	tc qdisc del dev $h1 root
-
-	ip link set dev $h1 down
-}
-
-h2_destroy()
-{
-	tc qdisc del dev $h2 root
-
-	ethtool --set-mm $h2 pmac-enabled off tx-enabled off verify-enabled off
-
-	ip link set dev $h2 down
-}
-
-setup_prepare()
-{
-	h1=${NETIFS[p1]}
-	h2=${NETIFS[p2]}
-
-	h1_create
-	h2_create
-}
-
-cleanup()
-{
-	pre_cleanup
-
-	h2_destroy
-	h1_destroy
-}
-
-check_ethtool_mm_support
-check_tc_fp_support
-require_command lldptool
-bail_on_lldpad "autoconfigure the MAC Merge layer" "configure it manually"
-
-for netif in ${NETIFS[@]}; do
-	ethtool --show-mm $netif 2>&1 &> /dev/null
-	if [[ $? -ne 0 ]]; then
-		echo "SKIP: $netif does not support MAC Merge"
-		exit $ksft_skip
-	fi
-
-	if check_ethtool_pmac_std_stats_support $netif eth-mac; then
-		has_pmac_stats[$netif]=true
-	else
-		has_pmac_stats[$netif]=false
-		echo "$netif does not report pMAC statistics, falling back to aggregate"
-	fi
-done
-
-trap cleanup EXIT
-
-setup_prepare
-setup_wait
-
-tests_run
-
-exit $EXIT_STATUS