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Commit bc7cbb1e authored by Petr Machata's avatar Petr Machata Committed by David S. Miller
Browse files

selftests: forwarding: Add devlink_lib.sh 



This helper library contains wrappers to devlink functionality agnostic
to the underlying device.

Signed-off-by: default avatarYuval Mintz <yuvalm@mellanox.com>
[petrm@mellanox.com: Split this out from another patch.]
Signed-off-by: default avatarPetr Machata <petrm@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 68d9cea5

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

0 → 100644
+108 −0
Original line number Diff line number Diff line 
#!/bin/bash

# SPDX-License-Identifier: GPL-2.0



##############################################################################

# Source library



relative_path="${BASH_SOURCE%/*}"

if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then

	relative_path="."

fi



source "$relative_path/lib.sh"



##############################################################################

# Defines



DEVLINK_DEV=$(devlink port show | grep "${NETIFS[p1]}" | \

	      grep -v "${NETIFS[p1]}[0-9]" | cut -d" " -f1 | \

	      rev | cut -d"/" -f2- | rev)

if [ -z "$DEVLINK_DEV" ]; then

	echo "SKIP: ${NETIFS[p1]} has no devlink device registered for it"

	exit 1

fi

if [[ "$(echo $DEVLINK_DEV | grep -c pci)" -eq 0 ]]; then

	echo "SKIP: devlink device's bus is not PCI"

	exit 1

fi



DEVLINK_VIDDID=$(lspci -s $(echo $DEVLINK_DEV | cut -d"/" -f2) \

		 -n | cut -d" " -f3)



##############################################################################

# Sanity checks



devlink -j resource show "$DEVLINK_DEV" &> /dev/null

if [ $? -ne 0 ]; then

	echo "SKIP: iproute2 too old, missing devlink resource support"

	exit 1

fi



##############################################################################

# Devlink helpers



devlink_resource_names_to_path()

{

	local resource

	local path=""



	for resource in "${@}"; do

		if [ "$path" == "" ]; then

			path="$resource"

		else

			path="${path}/$resource"

		fi

	done



	echo "$path"

}



devlink_resource_get()

{

	local name=$1

	local resource_name=.[][\"$DEVLINK_DEV\"]



	resource_name="$resource_name | .[] | select (.name == \"$name\")"



	shift

	for resource in "${@}"; do

		resource_name="${resource_name} | .[\"resources\"][] | \

			       select (.name == \"$resource\")"

	done



	devlink -j resource show "$DEVLINK_DEV" | jq "$resource_name"

}



devlink_resource_size_get()

{

	local size=$(devlink_resource_get "$@" | jq '.["size_new"]')



	if [ "$size" == "null" ]; then

		devlink_resource_get "$@" | jq '.["size"]'

	else

		echo "$size"

	fi

}



devlink_resource_size_set()

{

	local new_size=$1

	local path



	shift

	path=$(devlink_resource_names_to_path "$@")

	devlink resource set "$DEVLINK_DEV" path "$path" size "$new_size"

	check_err $? "Failed setting path $path to size $size"

}



devlink_reload()

{

	local still_pending



	devlink dev reload "$DEVLINK_DEV" &> /dev/null

	check_err $? "Failed reload"



	still_pending=$(devlink resource show "$DEVLINK_DEV" | \

			grep -c "size_new")

	check_err $still_pending "Failed reload - There are still unset sizes"

}