selftests: net: test ethtool -L vs mq

	modprobe netdevsim

    fi

    echo $NSIM_ID > /sys/bus/netdevsim/new_device

    echo $NSIM_ID $@ > /sys/bus/netdevsim/new_device

    # get new device name

    ls /sys/bus/netdevsim/devices/netdevsim${NSIM_ID}/net/

}

#!/bin/bash

# SPDX-License-Identifier: GPL-2.0-only

source ethtool-common.sh

set -o pipefail

n_children() {

    n=$(tc qdisc show dev $NDEV | grep '^qdisc' | wc -l)

    echo $((n - 1))

}

tcq() {

    tc qdisc $1 dev $NDEV ${@:2}

}

n_child_assert() {

    n=$(n_children)

    if [ $n -ne $1 ]; then

	echo "ERROR ($root): ${@:2}, expected $1 have $n"

	((num_errors++))

    else

	((num_passes++))

    fi

}

for root in mq mqprio; do

    NDEV=$(make_netdev 1 4)

    opts=

    [ $root == "mqprio" ] && opts='hw 0 num_tc 1 map 0 0 0 0  queues 1@0'

    tcq add root handle 100: $root $opts

    n_child_assert 4 'Init'

    # All defaults

    for n in 3 2 1 2 3 4 1 4; do

	ethtool -L $NDEV combined $n

	n_child_assert $n "Change queues to $n while down"

    done

    ip link set dev $NDEV up

    for n in 3 2 1 2 3 4 1 4; do

	ethtool -L $NDEV combined $n

	n_child_assert $n "Change queues to $n while up"

    done

    # One real one

    tcq replace parent 100:4 handle 204: pfifo_fast

    n_child_assert 4 "One real queue"

    ethtool -L $NDEV combined 1

    n_child_assert 2 "One real queue, one default"

    ethtool -L $NDEV combined 4

    n_child_assert 4 "One real queue, rest default"

    # Graft some

    tcq replace parent 100:1 handle 204:

    n_child_assert 3 "Grafted"

    ethtool -L $NDEV combined 1

    n_child_assert 1 "Grafted, one"

    cleanup_nsim

done

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