net/forwarding/ethtool_lib.sh

0001 #!/bin/bash
0002 # SPDX-License-Identifier: GPL-2.0
0003
0004 speeds_arr_get()
0005 {
0006         cmd='/ETHTOOL_LINK_MODE_[^[:space:]]*_BIT[[:space:]]+=[[:space:]]+/ \
0007                 {sub(/,$/, "") \
0008                 sub(/ETHTOOL_LINK_MODE_/,"") \
0009                 sub(/_BIT/,"") \
0010                 sub(/_Full/,"/Full") \
0011                 sub(/_Half/,"/Half");\
0012                 print "["$1"]="$3}'
0013
0014         awk "${cmd}" /usr/include/linux/ethtool.h
0015 }
0016
0017 ethtool_set()
0018 {
0019         local cmd="$@"
0020         local out=$(ethtool -s $cmd 2>&1 | wc -l)
0021
0022         check_err $out "error in configuration. $cmd"
0023 }
0024
0025 dev_linkmodes_params_get()
0026 {
0027         local dev=$1; shift
0028         local adver=$1; shift
0029         local -a linkmodes_params
0030         local param_count
0031         local arr
0032
0033         if (($adver)); then
0034                 mode="Advertised link modes"
0035         else
0036                 mode="Supported link modes"
0037         fi
0038
0039         local -a dev_linkmodes=($(dev_speeds_get $dev 1 $adver))
0040         for ((i=0; i<${#dev_linkmodes[@]}; i++)); do
0041                 linkmodes_params[$i]=$(echo -e "${dev_linkmodes[$i]}" | \
0042                         # Replaces all non numbers with spaces
0043                         sed -e 's/[^0-9]/ /g' | \
0044                         # Squeeze spaces in sequence to 1 space
0045                         tr -s ' ')
0046                 # Count how many numbers were found in the linkmode
0047                 param_count=$(echo "${linkmodes_params[$i]}" | wc -w)
0048                 if [[ $param_count -eq 1 ]]; then
0049                         linkmodes_params[$i]="${linkmodes_params[$i]} 1"
0050                 elif [[ $param_count -ge 3 ]]; then
0051                         arr=(${linkmodes_params[$i]})
0052                         # Take only first two params
0053                         linkmodes_params[$i]=$(echo "${arr[@]:0:2}")
0054                 fi
0055         done
0056         echo ${linkmodes_params[@]}
0057 }
0058
0059 dev_speeds_get()
0060 {
0061         local dev=$1; shift
0062         local with_mode=$1; shift
0063         local adver=$1; shift
0064         local speeds_str
0065
0066         if (($adver)); then
0067                 mode="Advertised link modes"
0068         else
0069                 mode="Supported link modes"
0070         fi
0071
0072         speeds_str=$(ethtool "$dev" | \
0073                 # Snip everything before the link modes section.
0074                 sed -n '/'"$mode"':/,$p' | \
0075                 # Quit processing the rest at the start of the next section.
0076                 # When checking, skip the header of this section (hence the 2,).
0077                 sed -n '2,${/^[\t][^ \t]/q};p' | \
0078                 # Drop the section header of the current section.
0079                 cut -d':' -f2)
0080
0081         local -a speeds_arr=($speeds_str)
0082         if [[ $with_mode -eq 0 ]]; then
0083                 for ((i=0; i<${#speeds_arr[@]}; i++)); do
0084                         speeds_arr[$i]=${speeds_arr[$i]%base*}
0085                 done
0086         fi
0087         echo ${speeds_arr[@]}
0088 }
0089
0090 common_speeds_get()
0091 {
0092         dev1=$1; shift
0093         dev2=$1; shift
0094         with_mode=$1; shift
0095         adver=$1; shift
0096
0097         local -a dev1_speeds=($(dev_speeds_get $dev1 $with_mode $adver))
0098         local -a dev2_speeds=($(dev_speeds_get $dev2 $with_mode $adver))
0099
0100         comm -12 \
0101                 <(printf '%s\n' "${dev1_speeds[@]}" | sort -u) \
0102                 <(printf '%s\n' "${dev2_speeds[@]}" | sort -u)
0103 }
0104
0105 different_speeds_get()
0106 {
0107         local dev1=$1; shift
0108         local dev2=$1; shift
0109         local with_mode=$1; shift
0110         local adver=$1; shift
0111
0112         local -a speeds_arr
0113
0114         speeds_arr=($(common_speeds_get $dev1 $dev2 $with_mode $adver))
0115         if [[ ${#speeds_arr[@]} < 2 ]]; then
0116                 check_err 1 "cannot check different speeds. There are not enough speeds"
0117         fi
0118
0119         echo ${speeds_arr[0]} ${speeds_arr[1]}
0120 }