ethtool_lib.sh

  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}