linuxdebug/tools/testing/selftests/drivers/net/netdevsim/tc-mq-visibility.sh

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#!/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