1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4############################################################################## 5# Source library 6 7relative_path="${BASH_SOURCE%/*}" 8if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then 9 relative_path="." 10fi 11 12source "$relative_path/lib.sh" 13 14############################################################################## 15# Defines 16 17DEVLINK_DEV=$(devlink port show | grep "${NETIFS[p1]}" | \ 18 grep -v "${NETIFS[p1]}[0-9]" | cut -d" " -f1 | \ 19 rev | cut -d"/" -f2- | rev) 20if [ -z "$DEVLINK_DEV" ]; then 21 echo "SKIP: ${NETIFS[p1]} has no devlink device registered for it" 22 exit 1 23fi 24if [[ "$(echo $DEVLINK_DEV | grep -c pci)" -eq 0 ]]; then 25 echo "SKIP: devlink device's bus is not PCI" 26 exit 1 27fi 28 29DEVLINK_VIDDID=$(lspci -s $(echo $DEVLINK_DEV | cut -d"/" -f2) \ 30 -n | cut -d" " -f3) 31 32############################################################################## 33# Sanity checks 34 35devlink -j resource show "$DEVLINK_DEV" &> /dev/null 36if [ $? -ne 0 ]; then 37 echo "SKIP: iproute2 too old, missing devlink resource support" 38 exit 1 39fi 40 41############################################################################## 42# Devlink helpers 43 44devlink_resource_names_to_path() 45{ 46 local resource 47 local path="" 48 49 for resource in "${@}"; do 50 if [ "$path" == "" ]; then 51 path="$resource" 52 else 53 path="${path}/$resource" 54 fi 55 done 56 57 echo "$path" 58} 59 60devlink_resource_get() 61{ 62 local name=$1 63 local resource_name=.[][\"$DEVLINK_DEV\"] 64 65 resource_name="$resource_name | .[] | select (.name == \"$name\")" 66 67 shift 68 for resource in "${@}"; do 69 resource_name="${resource_name} | .[\"resources\"][] | \ 70 select (.name == \"$resource\")" 71 done 72 73 devlink -j resource show "$DEVLINK_DEV" | jq "$resource_name" 74} 75 76devlink_resource_size_get() 77{ 78 local size=$(devlink_resource_get "$@" | jq '.["size_new"]') 79 80 if [ "$size" == "null" ]; then 81 devlink_resource_get "$@" | jq '.["size"]' 82 else 83 echo "$size" 84 fi 85} 86 87devlink_resource_size_set() 88{ 89 local new_size=$1 90 local path 91 92 shift 93 path=$(devlink_resource_names_to_path "$@") 94 devlink resource set "$DEVLINK_DEV" path "$path" size "$new_size" 95 check_err $? "Failed setting path $path to size $size" 96} 97 98devlink_reload() 99{ 100 local still_pending 101 102 devlink dev reload "$DEVLINK_DEV" &> /dev/null 103 check_err $? "Failed reload" 104 105 still_pending=$(devlink resource show "$DEVLINK_DEV" | \ 106 grep -c "size_new") 107 check_err $still_pending "Failed reload - There are still unset sizes" 108} 109