tools/testing/selftests/net/forwarding/devlink_lib.sh

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 ##############################################################################
   5 # Source library
   6
   7 relative_path="${BASH_SOURCE%/*}"
   8 if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then
   9         relative_path="."
  10 fi
  11
  12 source "$relative_path/lib.sh"
  13
  14 ##############################################################################
  15 # Defines
  16
  17 DEVLINK_DEV=$(devlink port show | grep "${NETIFS[p1]}" | \
  18               grep -v "${NETIFS[p1]}[0-9]" | cut -d" " -f1 | \
  19               rev | cut -d"/" -f2- | rev)
  20 if [ -z "$DEVLINK_DEV" ]; then
  21         echo "SKIP: ${NETIFS[p1]} has no devlink device registered for it"
  22         exit 1
  23 fi
  24 if [[ "$(echo $DEVLINK_DEV | grep -c pci)" -eq 0 ]]; then
  25         echo "SKIP: devlink device's bus is not PCI"
  26         exit 1
  27 fi
  28
  29 DEVLINK_VIDDID=$(lspci -s $(echo $DEVLINK_DEV | cut -d"/" -f2) \
  30                  -n | cut -d" " -f3)
  31
  32 ##############################################################################
  33 # Sanity checks
  34
  35 devlink -j resource show "$DEVLINK_DEV" &> /dev/null
  36 if [ $? -ne 0 ]; then
  37         echo "SKIP: iproute2 too old, missing devlink resource support"
  38         exit 1
  39 fi
  40
  41 ##############################################################################
  42 # Devlink helpers
  43
  44 devlink_resource_names_to_path()
  45 {
  46         local resource
  47         local path=""
  48
  49         for resource in "${@}"; do
  50                 if [ "$path" == "" ]; then
  51                         path="$resource"
  52                 else
  53                         path="${path}/$resource"
  54                 fi
  55         done
  56
  57         echo "$path"
  58 }
  59
  60 devlink_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 "$resource_name"
  74 }
  75
  76 devlink_resource_size_get()
  77 {
  78         local size=$(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
  87 devlink_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 $size"
  96 }
  97
  98 devlink_reload()
  99 {
 100         local still_pending
 101
 102         devlink dev reload "$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 }