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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:12 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-18 18:50:12 +0000 |
commit | 8665bd53f2f2e27e5511d90428cb3f60e6d0ce15 (patch) | |
tree | 8d58900dc0ebd4a3011f92c128d2fe45bc7c4bf2 /tools/testing/selftests/net/forwarding/ethtool_rmon.sh | |
parent | Adding debian version 6.7.12-1. (diff) | |
download | linux-8665bd53f2f2e27e5511d90428cb3f60e6d0ce15.tar.xz linux-8665bd53f2f2e27e5511d90428cb3f60e6d0ce15.zip |
Merging upstream version 6.8.9.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/net/forwarding/ethtool_rmon.sh')
-rwxr-xr-x | tools/testing/selftests/net/forwarding/ethtool_rmon.sh | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/forwarding/ethtool_rmon.sh b/tools/testing/selftests/net/forwarding/ethtool_rmon.sh new file mode 100755 index 0000000000..41a34a61f7 --- /dev/null +++ b/tools/testing/selftests/net/forwarding/ethtool_rmon.sh @@ -0,0 +1,143 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +ALL_TESTS=" + rmon_rx_histogram + rmon_tx_histogram +" + +NUM_NETIFS=2 +source lib.sh + +ETH_FCS_LEN=4 +ETH_HLEN=$((6+6+2)) + +declare -A netif_mtu + +ensure_mtu() +{ + local iface=$1; shift + local len=$1; shift + local current=$(ip -j link show dev $iface | jq -r '.[0].mtu') + local required=$((len - ETH_HLEN - ETH_FCS_LEN)) + + if [ $current -lt $required ]; then + ip link set dev $iface mtu $required || return 1 + fi +} + +bucket_test() +{ + local iface=$1; shift + local neigh=$1; shift + local set=$1; shift + local bucket=$1; shift + local len=$1; shift + local num_rx=10000 + local num_tx=20000 + local expected= + local before= + local after= + local delta= + + # Mausezahn does not include FCS bytes in its length - but the + # histogram counters do + len=$((len - ETH_FCS_LEN)) + + before=$(ethtool --json -S $iface --groups rmon | \ + jq -r ".[0].rmon[\"${set}-pktsNtoM\"][$bucket].val") + + # Send 10k one way and 20k in the other, to detect counters + # mapped to the wrong direction + $MZ $neigh -q -c $num_rx -p $len -a own -b bcast -d 10us + $MZ $iface -q -c $num_tx -p $len -a own -b bcast -d 10us + + after=$(ethtool --json -S $iface --groups rmon | \ + jq -r ".[0].rmon[\"${set}-pktsNtoM\"][$bucket].val") + + delta=$((after - before)) + + expected=$([ $set = rx ] && echo $num_rx || echo $num_tx) + + # Allow some extra tolerance for other packets sent by the stack + [ $delta -ge $expected ] && [ $delta -le $((expected + 100)) ] +} + +rmon_histogram() +{ + local iface=$1; shift + local neigh=$1; shift + local set=$1; shift + local nbuckets=0 + local step= + + RET=0 + + while read -r -a bucket; do + step="$set-pkts${bucket[0]}to${bucket[1]} on $iface" + + for if in $iface $neigh; do + if ! ensure_mtu $if ${bucket[0]}; then + log_test_skip "$if does not support the required MTU for $step" + return + fi + done + + if ! bucket_test $iface $neigh $set $nbuckets ${bucket[0]}; then + check_err 1 "$step failed" + return 1 + fi + log_test "$step" + nbuckets=$((nbuckets + 1)) + done < <(ethtool --json -S $iface --groups rmon | \ + jq -r ".[0].rmon[\"${set}-pktsNtoM\"][]|[.low, .high]|@tsv" 2>/dev/null) + + if [ $nbuckets -eq 0 ]; then + log_test_skip "$iface does not support $set histogram counters" + return + fi +} + +rmon_rx_histogram() +{ + rmon_histogram $h1 $h2 rx + rmon_histogram $h2 $h1 rx +} + +rmon_tx_histogram() +{ + rmon_histogram $h1 $h2 tx + rmon_histogram $h2 $h1 tx +} + +setup_prepare() +{ + h1=${NETIFS[p1]} + h2=${NETIFS[p2]} + + for iface in $h1 $h2; do + netif_mtu[$iface]=$(ip -j link show dev $iface | jq -r '.[0].mtu') + ip link set dev $iface up + done +} + +cleanup() +{ + pre_cleanup + + for iface in $h2 $h1; do + ip link set dev $iface \ + mtu ${netif_mtu[$iface]} \ + down + done +} + +check_ethtool_counter_group_support +trap cleanup EXIT + +setup_prepare +setup_wait + +tests_run + +exit $EXIT_STATUS |