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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/tools/testing/selftests/drivers/net/netdevsim/ethtool-coalesce.sh
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#!/bin/bash

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

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source ethtool-common.sh

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function get_value {

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    local query="${SETTINGS_MAP[$1]}"

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    echo $(ethtool -c $NSIM_NETDEV | \

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        awk -F':' -v pattern="$query:" '$0 ~ pattern {gsub(/[ \t]/, "", $2); print $2}')

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}

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function update_current_settings {

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    for key in ${!SETTINGS_MAP[@]}; do

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        CURRENT_SETTINGS[$key]=$(get_value $key)

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    done

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    echo ${CURRENT_SETTINGS[@]}

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}

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if ! ethtool -h | grep -q coalesce; then

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    echo "SKIP: No --coalesce support in ethtool"

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    exit 4

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fi

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NSIM_NETDEV=$(make_netdev)

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set -o pipefail

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declare -A SETTINGS_MAP=(

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    ["rx-frames-low"]="rx-frame-low"

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    ["tx-frames-low"]="tx-frame-low"

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    ["rx-frames-high"]="rx-frame-high"

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    ["tx-frames-high"]="tx-frame-high"

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    ["rx-usecs"]="rx-usecs"

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    ["rx-frames"]="rx-frames"

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    ["rx-usecs-irq"]="rx-usecs-irq"

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    ["rx-frames-irq"]="rx-frames-irq"

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    ["tx-usecs"]="tx-usecs"

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    ["tx-frames"]="tx-frames"

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    ["tx-usecs-irq"]="tx-usecs-irq"

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    ["tx-frames-irq"]="tx-frames-irq"

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    ["stats-block-usecs"]="stats-block-usecs"

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    ["pkt-rate-low"]="pkt-rate-low"

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    ["rx-usecs-low"]="rx-usecs-low"

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    ["tx-usecs-low"]="tx-usecs-low"

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    ["pkt-rate-high"]="pkt-rate-high"

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    ["rx-usecs-high"]="rx-usecs-high"

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    ["tx-usecs-high"]="tx-usecs-high"

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    ["sample-interval"]="sample-interval"

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)

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declare -A CURRENT_SETTINGS=(

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    ["rx-frames-low"]=""

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    ["tx-frames-low"]=""

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    ["rx-frames-high"]=""

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    ["tx-frames-high"]=""

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    ["rx-usecs"]=""

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    ["rx-frames"]=""

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    ["rx-usecs-irq"]=""

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    ["rx-frames-irq"]=""

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    ["tx-usecs"]=""

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    ["tx-frames"]=""

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    ["tx-usecs-irq"]=""

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    ["tx-frames-irq"]=""

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    ["stats-block-usecs"]=""

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    ["pkt-rate-low"]=""

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    ["rx-usecs-low"]=""

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    ["tx-usecs-low"]=""

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    ["pkt-rate-high"]=""

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    ["rx-usecs-high"]=""

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    ["tx-usecs-high"]=""

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    ["sample-interval"]=""

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)

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declare -A EXPECTED_SETTINGS=(

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    ["rx-frames-low"]=""

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    ["tx-frames-low"]=""

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    ["rx-frames-high"]=""

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    ["tx-frames-high"]=""

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    ["rx-usecs"]=""

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    ["rx-frames"]=""

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    ["rx-usecs-irq"]=""

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    ["rx-frames-irq"]=""

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    ["tx-usecs"]=""

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    ["tx-frames"]=""

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    ["tx-usecs-irq"]=""

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    ["tx-frames-irq"]=""

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    ["stats-block-usecs"]=""

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    ["pkt-rate-low"]=""

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    ["rx-usecs-low"]=""

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    ["tx-usecs-low"]=""

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    ["pkt-rate-high"]=""

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    ["rx-usecs-high"]=""

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    ["tx-usecs-high"]=""

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    ["sample-interval"]=""

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)

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# populate the expected settings map

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for key in ${!SETTINGS_MAP[@]}; do

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    EXPECTED_SETTINGS[$key]=$(get_value $key)

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done

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# test

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for key in ${!SETTINGS_MAP[@]}; do

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    value=$((RANDOM % $((2**32-1))))

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    ethtool -C $NSIM_NETDEV "$key" "$value"

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    EXPECTED_SETTINGS[$key]="$value"

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    expected=${EXPECTED_SETTINGS[@]}

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    current=$(update_current_settings)

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    check $? "$current" "$expected"

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    set +x

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done

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# bool settings which ethtool displays on the same line

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ethtool -C $NSIM_NETDEV adaptive-rx on

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s=$(ethtool -c $NSIM_NETDEV | grep -q "Adaptive RX: on  TX: off")

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check $? "$s" ""

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ethtool -C $NSIM_NETDEV adaptive-tx on

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s=$(ethtool -c $NSIM_NETDEV | grep -q "Adaptive RX: on  TX: on")

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check $? "$s" ""

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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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