Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 help 2>&1 | grep resource &> /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}