ethtool-coalesce.sh

  1#!/bin/bash
  2# SPDX-License-Identifier: GPL-2.0-only
  3
  4source ethtool-common.sh
  5
  6function get_value {
  7    local query="${SETTINGS_MAP[$1]}"
  8
  9    echo $(ethtool -c $NSIM_NETDEV | \
 10        awk -F':' -v pattern="$query:" '$0 ~ pattern {gsub(/[ \t]/, "", $2); print $2}')
 11}
 12
 13function update_current_settings {
 14    for key in ${!SETTINGS_MAP[@]}; do
 15        CURRENT_SETTINGS[$key]=$(get_value $key)
 16    done
 17    echo ${CURRENT_SETTINGS[@]}
 18}
 19
 20if ! ethtool -h | grep -q coalesce; then
 21    echo "SKIP: No --coalesce support in ethtool"
 22    exit 4
 23fi
 24
 25NSIM_NETDEV=$(make_netdev)
 26
 27set -o pipefail
 28
 29declare -A SETTINGS_MAP=(
 30    ["rx-frames-low"]="rx-frame-low"
 31    ["tx-frames-low"]="tx-frame-low"
 32    ["rx-frames-high"]="rx-frame-high"
 33    ["tx-frames-high"]="tx-frame-high"
 34    ["rx-usecs"]="rx-usecs"
 35    ["rx-frames"]="rx-frames"
 36    ["rx-usecs-irq"]="rx-usecs-irq"
 37    ["rx-frames-irq"]="rx-frames-irq"
 38    ["tx-usecs"]="tx-usecs"
 39    ["tx-frames"]="tx-frames"
 40    ["tx-usecs-irq"]="tx-usecs-irq"
 41    ["tx-frames-irq"]="tx-frames-irq"
 42    ["stats-block-usecs"]="stats-block-usecs"
 43    ["pkt-rate-low"]="pkt-rate-low"
 44    ["rx-usecs-low"]="rx-usecs-low"
 45    ["tx-usecs-low"]="tx-usecs-low"
 46    ["pkt-rate-high"]="pkt-rate-high"
 47    ["rx-usecs-high"]="rx-usecs-high"
 48    ["tx-usecs-high"]="tx-usecs-high"
 49    ["sample-interval"]="sample-interval"
 50)
 51
 52declare -A CURRENT_SETTINGS=(
 53    ["rx-frames-low"]=""
 54    ["tx-frames-low"]=""
 55    ["rx-frames-high"]=""
 56    ["tx-frames-high"]=""
 57    ["rx-usecs"]=""
 58    ["rx-frames"]=""
 59    ["rx-usecs-irq"]=""
 60    ["rx-frames-irq"]=""
 61    ["tx-usecs"]=""
 62    ["tx-frames"]=""
 63    ["tx-usecs-irq"]=""
 64    ["tx-frames-irq"]=""
 65    ["stats-block-usecs"]=""
 66    ["pkt-rate-low"]=""
 67    ["rx-usecs-low"]=""
 68    ["tx-usecs-low"]=""
 69    ["pkt-rate-high"]=""
 70    ["rx-usecs-high"]=""
 71    ["tx-usecs-high"]=""
 72    ["sample-interval"]=""
 73)
 74
 75declare -A EXPECTED_SETTINGS=(
 76    ["rx-frames-low"]=""
 77    ["tx-frames-low"]=""
 78    ["rx-frames-high"]=""
 79    ["tx-frames-high"]=""
 80    ["rx-usecs"]=""
 81    ["rx-frames"]=""
 82    ["rx-usecs-irq"]=""
 83    ["rx-frames-irq"]=""
 84    ["tx-usecs"]=""
 85    ["tx-frames"]=""
 86    ["tx-usecs-irq"]=""
 87    ["tx-frames-irq"]=""
 88    ["stats-block-usecs"]=""
 89    ["pkt-rate-low"]=""
 90    ["rx-usecs-low"]=""
 91    ["tx-usecs-low"]=""
 92    ["pkt-rate-high"]=""
 93    ["rx-usecs-high"]=""
 94    ["tx-usecs-high"]=""
 95    ["sample-interval"]=""
 96)
 97
 98# populate the expected settings map
 99for key in ${!SETTINGS_MAP[@]}; do
100    EXPECTED_SETTINGS[$key]=$(get_value $key)
101done
102
103# test
104for key in ${!SETTINGS_MAP[@]}; do
105    value=$((RANDOM % $((2**32-1))))
106
107    ethtool -C $NSIM_NETDEV "$key" "$value"
108
109    EXPECTED_SETTINGS[$key]="$value"
110    expected=${EXPECTED_SETTINGS[@]}
111    current=$(update_current_settings)
112
113    check $? "$current" "$expected"
114    set +x
115done
116
117# bool settings which ethtool displays on the same line
118ethtool -C $NSIM_NETDEV adaptive-rx on
119s=$(ethtool -c $NSIM_NETDEV | grep -q "Adaptive RX: on  TX: off")
120check $? "$s" ""
121
122ethtool -C $NSIM_NETDEV adaptive-tx on
123s=$(ethtool -c $NSIM_NETDEV | grep -q "Adaptive RX: on  TX: on")
124check $? "$s" ""
125
126if [ $num_errors -eq 0 ]; then
127    echo "PASSED all $((num_passes)) checks"
128    exit 0
129else
130    echo "FAILED $num_errors/$((num_errors+num_passes)) checks"
131    exit 1
132fi