#!/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
lib_dir=$(dirname "$0")
source "$lib_dir"/../../../net/forwarding/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
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