tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3
4lib_dir=$(dirname $0)/../../../net/forwarding
5
6ALL_TESTS="
7 autoneg
8 autoneg_force_mode
9"
10
11NUM_NETIFS=2
12: ${TIMEOUT:=30000} # ms
13source $lib_dir/lib.sh
14source $lib_dir/ethtool_lib.sh
15
16setup_prepare()
17{
18 swp1=${NETIFS[p1]}
19 swp2=${NETIFS[p2]}
20
21 ip link set dev $swp1 up
22 ip link set dev $swp2 up
23
24 busywait "$TIMEOUT" wait_for_port_up ethtool $swp2
25 check_err $? "ports did not come up"
26
27 local lanes_exist=$(ethtool $swp1 | grep 'Lanes:')
28 if [[ -z $lanes_exist ]]; then
29 log_test "SKIP: driver does not support lanes setting"
30 exit 1
31 fi
32
33 ip link set dev $swp2 down
34 ip link set dev $swp1 down
35}
36
37check_lanes()
38{
39 local dev=$1; shift
40 local lanes=$1; shift
41 local max_speed=$1; shift
42 local chosen_lanes
43
44 chosen_lanes=$(ethtool $dev | grep 'Lanes:')
45 chosen_lanes=${chosen_lanes#*"Lanes: "}
46
47 ((chosen_lanes == lanes))
48 check_err $? "swp1 advertise $max_speed and $lanes, devs sync to $chosen_lanes"
49}
50
51check_unsupported_lanes()
52{
53 local dev=$1; shift
54 local max_speed=$1; shift
55 local max_lanes=$1; shift
56 local autoneg=$1; shift
57 local autoneg_str=""
58
59 local unsupported_lanes=$((max_lanes *= 2))
60
61 if [[ $autoneg -eq 0 ]]; then
62 autoneg_str="autoneg off"
63 fi
64
65 ethtool -s $swp1 speed $max_speed lanes $unsupported_lanes $autoneg_str &> /dev/null
66 check_fail $? "Unsuccessful $unsupported_lanes lanes setting was expected"
67}
68
69max_speed_and_lanes_get()
70{
71 local dev=$1; shift
72 local arr=("$@")
73 local max_lanes
74 local max_speed
75 local -a lanes_arr
76 local -a speeds_arr
77 local -a max_values
78
79 for ((i=0; i<${#arr[@]}; i+=2)); do
80 speeds_arr+=("${arr[$i]}")
81 lanes_arr+=("${arr[i+1]}")
82 done
83
84 max_values+=($(get_max "${speeds_arr[@]}"))
85 max_values+=($(get_max "${lanes_arr[@]}"))
86
87 echo ${max_values[@]}
88}
89
90search_linkmode()
91{
92 local speed=$1; shift
93 local lanes=$1; shift
94 local arr=("$@")
95
96 for ((i=0; i<${#arr[@]}; i+=2)); do
97 if [[ $speed -eq ${arr[$i]} && $lanes -eq ${arr[i+1]} ]]; then
98 return 1
99 fi
100 done
101 return 0
102}
103
104autoneg()
105{
106 RET=0
107
108 local lanes
109 local max_speed
110 local max_lanes
111
112 local -a linkmodes_params=($(dev_linkmodes_params_get $swp1 1))
113 local -a max_values=($(max_speed_and_lanes_get $swp1 "${linkmodes_params[@]}"))
114 max_speed=${max_values[0]}
115 max_lanes=${max_values[1]}
116
117 lanes=$max_lanes
118
119 while [[ $lanes -ge 1 ]]; do
120 search_linkmode $max_speed $lanes "${linkmodes_params[@]}"
121 if [[ $? -eq 1 ]]; then
122 ethtool_set $swp1 speed $max_speed lanes $lanes
123 ip link set dev $swp1 up
124 ip link set dev $swp2 up
125 busywait "$TIMEOUT" wait_for_port_up ethtool $swp2
126 check_err $? "ports did not come up"
127
128 check_lanes $swp1 $lanes $max_speed
129 log_test "$lanes lanes is autonegotiated"
130 fi
131 let $((lanes /= 2))
132 done
133
134 check_unsupported_lanes $swp1 $max_speed $max_lanes 1
135 log_test "Lanes number larger than max width is not set"
136
137 ip link set dev $swp2 down
138 ip link set dev $swp1 down
139}
140
141autoneg_force_mode()
142{
143 RET=0
144
145 local lanes
146 local max_speed
147 local max_lanes
148
149 local -a linkmodes_params=($(dev_linkmodes_params_get $swp1 1))
150 local -a max_values=($(max_speed_and_lanes_get $swp1 "${linkmodes_params[@]}"))
151 max_speed=${max_values[0]}
152 max_lanes=${max_values[1]}
153
154 lanes=$max_lanes
155
156 while [[ $lanes -ge 1 ]]; do
157 search_linkmode $max_speed $lanes "${linkmodes_params[@]}"
158 if [[ $? -eq 1 ]]; then
159 ethtool_set $swp1 speed $max_speed lanes $lanes autoneg off
160 ethtool_set $swp2 speed $max_speed lanes $lanes autoneg off
161 ip link set dev $swp1 up
162 ip link set dev $swp2 up
163 busywait "$TIMEOUT" wait_for_port_up ethtool $swp2
164 check_err $? "ports did not come up"
165
166 check_lanes $swp1 $lanes $max_speed
167 log_test "Autoneg off, $lanes lanes detected during force mode"
168 fi
169 let $((lanes /= 2))
170 done
171
172 check_unsupported_lanes $swp1 $max_speed $max_lanes 0
173 log_test "Lanes number larger than max width is not set"
174
175 ip link set dev $swp2 down
176 ip link set dev $swp1 down
177
178 ethtool -s $swp2 autoneg on
179 ethtool -s $swp1 autoneg on
180}
181
182check_ethtool_lanes_support
183setup_prepare
184
185tests_run
186
187exit $EXIT_STATUS