#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0-only
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NSIM_ID=$((RANDOM % 1024))
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NSIM_DEV_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_ID
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NSIM_DEV_DFS=/sys/kernel/debug/netdevsim/netdevsim$NSIM_ID/ports/0
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NSIM_NETDEV=
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num_passes=0
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num_errors=0
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function cleanup_nsim {
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if [ -e $NSIM_DEV_SYS ]; then
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echo $NSIM_ID > /sys/bus/netdevsim/del_device
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fi
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}
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function cleanup {
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cleanup_nsim
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}
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trap cleanup EXIT
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function get_netdev_name {
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local -n old=$1
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new=$(ls /sys/class/net)
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for netdev in $new; do
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for check in $old; do
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[ $netdev == $check ] && break
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done
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if [ $netdev != $check ]; then
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echo $netdev
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break
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fi
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done
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}
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function check {
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local code=$1
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local str=$2
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local exp_str=$3
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if [ $code -ne 0 ]; then
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((num_errors++))
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return
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fi
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if [ "$str" != "$exp_str" ]; then
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echo -e "Expected: '$exp_str', got '$str'"
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((num_errors++))
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return
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fi
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((num_passes++))
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}
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# Bail if ethtool is too old
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if ! ethtool -h | grep include-stat 2>&1 >/dev/null; then
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echo "SKIP: No --include-statistics support in ethtool"
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exit 4
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fi
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# Make a netdevsim
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old_netdevs=$(ls /sys/class/net)
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modprobe netdevsim
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echo $NSIM_ID > /sys/bus/netdevsim/new_device
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NSIM_NETDEV=`get_netdev_name old_netdevs`
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set -o pipefail
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echo n > $NSIM_DEV_DFS/ethtool/pause/report_stats_tx
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echo n > $NSIM_DEV_DFS/ethtool/pause/report_stats_rx
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s=$(ethtool --json -a $NSIM_NETDEV | jq '.[].statistics')
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check $? "$s" "null"
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s=$(ethtool -I --json -a $NSIM_NETDEV | jq '.[].statistics')
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check $? "$s" "{}"
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echo y > $NSIM_DEV_DFS/ethtool/pause/report_stats_tx
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s=$(ethtool -I --json -a $NSIM_NETDEV | jq '.[].statistics | length')
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check $? "$s" "1"
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s=$(ethtool -I --json -a $NSIM_NETDEV | jq '.[].statistics.tx_pause_frames')
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check $? "$s" "2"
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echo y > $NSIM_DEV_DFS/ethtool/pause/report_stats_rx
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s=$(ethtool -I --json -a $NSIM_NETDEV | jq '.[].statistics | length')
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check $? "$s" "2"
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s=$(ethtool -I --json -a $NSIM_NETDEV | jq '.[].statistics.rx_pause_frames')
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check $? "$s" "1"
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s=$(ethtool -I --json -a $NSIM_NETDEV | jq '.[].statistics.tx_pause_frames')
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check $? "$s" "2"
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if [ $num_errors -eq 0 ]; then
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echo "PASSED all $((num_passes)) checks"
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exit 0
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else
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echo "FAILED $num_errors/$((num_errors+num_passes)) checks"
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exit 1
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fi
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