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_lib.sh (2815B)

      1#!/bin/bash
      2# SPDX-License-Identifier: GPL-2.0
      3
      4speeds_arr_get()
      5{
      6	cmd='/ETHTOOL_LINK_MODE_[^[:space:]]*_BIT[[:space:]]+=[[:space:]]+/ \
      7		{sub(/,$/, "") \
      8		sub(/ETHTOOL_LINK_MODE_/,"") \
      9		sub(/_BIT/,"") \
     10		sub(/_Full/,"/Full") \
     11		sub(/_Half/,"/Half");\
     12		print "["$1"]="$3}'
     13
     14	awk "${cmd}" /usr/include/linux/ethtool.h
     15}
     16
     17ethtool_set()
     18{
     19	local cmd="$@"
     20	local out=$(ethtool -s $cmd 2>&1 | wc -l)
     21
     22	check_err $out "error in configuration. $cmd"
     23}
     24
     25dev_linkmodes_params_get()
     26{
     27	local dev=$1; shift
     28	local adver=$1; shift
     29	local -a linkmodes_params
     30	local param_count
     31	local arr
     32
     33	if (($adver)); then
     34		mode="Advertised link modes"
     35	else
     36		mode="Supported link modes"
     37	fi
     38
     39	local -a dev_linkmodes=($(dev_speeds_get $dev 1 $adver))
     40	for ((i=0; i<${#dev_linkmodes[@]}; i++)); do
     41		linkmodes_params[$i]=$(echo -e "${dev_linkmodes[$i]}" | \
     42			# Replaces all non numbers with spaces
     43			sed -e 's/[^0-9]/ /g' | \
     44			# Squeeze spaces in sequence to 1 space
     45			tr -s ' ')
     46		# Count how many numbers were found in the linkmode
     47		param_count=$(echo "${linkmodes_params[$i]}" | wc -w)
     48		if [[ $param_count -eq 1 ]]; then
     49			linkmodes_params[$i]="${linkmodes_params[$i]} 1"
     50		elif [[ $param_count -ge 3 ]]; then
     51			arr=(${linkmodes_params[$i]})
     52			# Take only first two params
     53			linkmodes_params[$i]=$(echo "${arr[@]:0:2}")
     54		fi
     55	done
     56	echo ${linkmodes_params[@]}
     57}
     58
     59dev_speeds_get()
     60{
     61	local dev=$1; shift
     62	local with_mode=$1; shift
     63	local adver=$1; shift
     64	local speeds_str
     65
     66	if (($adver)); then
     67		mode="Advertised link modes"
     68	else
     69		mode="Supported link modes"
     70	fi
     71
     72	speeds_str=$(ethtool "$dev" | \
     73		# Snip everything before the link modes section.
     74		sed -n '/'"$mode"':/,$p' | \
     75		# Quit processing the rest at the start of the next section.
     76		# When checking, skip the header of this section (hence the 2,).
     77		sed -n '2,${/^[\t][^ \t]/q};p' | \
     78		# Drop the section header of the current section.
     79		cut -d':' -f2)
     80
     81	local -a speeds_arr=($speeds_str)
     82	if [[ $with_mode -eq 0 ]]; then
     83		for ((i=0; i<${#speeds_arr[@]}; i++)); do
     84			speeds_arr[$i]=${speeds_arr[$i]%base*}
     85		done
     86	fi
     87	echo ${speeds_arr[@]}
     88}
     89
     90common_speeds_get()
     91{
     92	dev1=$1; shift
     93	dev2=$1; shift
     94	with_mode=$1; shift
     95	adver=$1; shift
     96
     97	local -a dev1_speeds=($(dev_speeds_get $dev1 $with_mode $adver))
     98	local -a dev2_speeds=($(dev_speeds_get $dev2 $with_mode $adver))
     99
    100	comm -12 \
    101		<(printf '%s\n' "${dev1_speeds[@]}" | sort -u) \
    102		<(printf '%s\n' "${dev2_speeds[@]}" | sort -u)
    103}
    104
    105different_speeds_get()
    106{
    107	local dev1=$1; shift
    108	local dev2=$1; shift
    109	local with_mode=$1; shift
    110	local adver=$1; shift
    111
    112	local -a speeds_arr
    113
    114	speeds_arr=($(common_speeds_get $dev1 $dev2 $with_mode $adver))
    115	if [[ ${#speeds_arr[@]} < 2 ]]; then
    116		check_err 1 "cannot check different speeds. There are not enough speeds"
    117	fi
    118
    119	echo ${speeds_arr[0]} ${speeds_arr[1]}
    120}