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