cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

ethtool-ring.sh (1836B)


      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 -g $NSIM_NETDEV | \
     10        tail -n +$CURR_SETT_LINE | \
     11        awk -F':' -v pattern="$query:" '$0 ~ pattern {gsub(/[\t ]/, "", $2); print $2}')
     12}
     13
     14function update_current_settings {
     15    for key in ${!SETTINGS_MAP[@]}; do
     16        CURRENT_SETTINGS[$key]=$(get_value $key)
     17    done
     18    echo ${CURRENT_SETTINGS[@]}
     19}
     20
     21if ! ethtool -h | grep -q set-ring >/dev/null; then
     22    echo "SKIP: No --set-ring support in ethtool"
     23    exit 4
     24fi
     25
     26NSIM_NETDEV=$(make_netdev)
     27
     28set -o pipefail
     29
     30declare -A SETTINGS_MAP=(
     31    ["rx"]="RX"
     32    ["rx-mini"]="RX Mini"
     33    ["rx-jumbo"]="RX Jumbo"
     34    ["tx"]="TX"
     35)
     36
     37declare -A EXPECTED_SETTINGS=(
     38    ["rx"]=""
     39    ["rx-mini"]=""
     40    ["rx-jumbo"]=""
     41    ["tx"]=""
     42)
     43
     44declare -A CURRENT_SETTINGS=(
     45    ["rx"]=""
     46    ["rx-mini"]=""
     47    ["rx-jumbo"]=""
     48    ["tx"]=""
     49)
     50
     51MAX_VALUE=$((RANDOM % $((2**32-1))))
     52RING_MAX_LIST=$(ls $NSIM_DEV_DFS/ethtool/ring/)
     53
     54for ring_max_entry in $RING_MAX_LIST; do
     55    echo $MAX_VALUE > $NSIM_DEV_DFS/ethtool/ring/$ring_max_entry
     56done
     57
     58CURR_SETT_LINE=$(ethtool -g $NSIM_NETDEV | grep -i -m1 -n 'Current hardware settings' | cut -f1 -d:)
     59
     60# populate the expected settings map
     61for key in ${!SETTINGS_MAP[@]}; do
     62    EXPECTED_SETTINGS[$key]=$(get_value $key)
     63done
     64
     65# test
     66for key in ${!SETTINGS_MAP[@]}; do
     67    value=$((RANDOM % $MAX_VALUE))
     68
     69    ethtool -G $NSIM_NETDEV "$key" "$value"
     70
     71    EXPECTED_SETTINGS[$key]="$value"
     72    expected=${EXPECTED_SETTINGS[@]}
     73    current=$(update_current_settings)
     74
     75    check $? "$current" "$expected"
     76    set +x
     77done
     78
     79if [ $num_errors -eq 0 ]; then
     80    echo "PASSED all $((num_passes)) checks"
     81    exit 0
     82else
     83    echo "FAILED $num_errors/$((num_errors+num_passes)) checks"
     84    exit 1
     85fi