This helper library contains wrappers to devlink functionality agnostic
to the underlying device.
Signed-off-by: Yuval Mintz <yuvalm@xxxxxxxxxxxx>
[petrm@xxxxxxxxxxxx: Split this out from another patch.]
Signed-off-by: Petr Machata <petrm@xxxxxxxxxxxx>
---
.../selftests/net/forwarding/devlink_lib.sh | 108 +++++++++++++++++++++
1 file changed, 108 insertions(+)
create mode 100644 tools/testing/selftests/net/forwarding/devlink_lib.sh
diff --git a/tools/testing/selftests/net/forwarding/devlink_lib.sh b/tools/testing/selftests/net/forwarding/devlink_lib.sh
new file mode 100644
index 000000000000..5ab1e5f43022
--- /dev/null
+++ b/tools/testing/selftests/net/forwarding/devlink_lib.sh
@@ -0,0 +1,108 @@
+#!/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"
+}
--
2.4.11
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