1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3
4 ALL_TESTS="
5 manual_with_verification_h1_to_h2
6 manual_with_verification_h2_to_h1
7 manual_without_verification_h1_to_h2
8 manual_without_verification_h2_to_h1
9 manual_failed_verification_h1_to_h2
10 manual_failed_verification_h2_to_h1
11 lldp
12 "
13
14 NUM_NETIFS=2
15 REQUIRE_MZ=no
16 PREEMPTIBLE_PRIO=0
17 lib_dir=$(dirname "$0")
18 source "$lib_dir"/../../../net/forwarding/lib.sh
19
20 traffic_test()
21 {
22 local if=$1; shift
23 local src=$1; shift
24 local num_pkts=10000
25 local before=
26 local after=
27 local delta=
28
29 if [ ${has_pmac_stats[$if]} = false ]; then
30 src="aggregate"
31 fi
32
33 before=$(ethtool_std_stats_get $if "eth-mac" "FramesTransmittedOK" $src)
34
35 $MZ $if -q -c $num_pkts -p 64 -b bcast -t ip -R $PREEMPTIBLE_PRIO
36
37 after=$(ethtool_std_stats_get $if "eth-mac" "FramesTransmittedOK" $src)
38
39 delta=$((after - before))
40
41 # Allow an extra 1% tolerance for random packets sent by the stack
42 [ $delta -ge $num_pkts ] && [ $delta -le $((num_pkts + 100)) ]
43 }
44
45 manual_with_verification()
46 {
47 local tx=$1; shift
48 local rx=$1; shift
49
50 RET=0
51
52 # It isn't completely clear from IEEE 802.3-2018 Figure 99-5: Transmit
53 # Processing state diagram whether the "send_r" variable (send response
54 # to verification frame) should be taken into consideration while the
55 # MAC Merge TX direction is disabled. That being said, at least the
56 # NXP ENETC does not, and requires tx-enabled on in order to respond to
57 # the link partner's verification frames.
58 ethtool --set-mm $rx tx-enabled on
59 ethtool --set-mm $tx verify-enabled on tx-enabled on
60
61 # Wait for verification to finish
62 sleep 1
63
64 ethtool --json --show-mm $tx | jq -r '.[]."verify-status"' | \
65 grep -q 'SUCCEEDED'
66 check_err "$?" "Verification did not succeed"
67
68 ethtool --json --show-mm $tx | jq -r '.[]."tx-active"' | grep -q 'true'
69 check_err "$?" "pMAC TX is not active"
70
71 traffic_test $tx "pmac"
72 check_err "$?" "Traffic did not get sent through $tx's pMAC"
73
74 ethtool --set-mm $tx verify-enabled off tx-enabled off
75 ethtool --set-mm $rx tx-enabled off
76
77 log_test "Manual configuration with verification: $tx to $rx"
78 }
79
80 manual_with_verification_h1_to_h2()
81 {
82 manual_with_verification $h1 $h2
83 }
84
85 manual_with_verification_h2_to_h1()
86 {
87 manual_with_verification $h2 $h1
88 }
89
90 manual_without_verification()
91 {
92 local tx=$1; shift
93 local rx=$1; shift
94
95 RET=0
96
97 ethtool --set-mm $tx verify-enabled off tx-enabled on
98
99 ethtool --json --show-mm $tx | jq -r '.[]."verify-status"' | \
100 grep -q 'DISABLED'
101 check_err "$?" "Verification is not disabled"
102
103 ethtool --json --show-mm $tx | jq -r '.[]."tx-active"' | grep -q 'true'
104 check_err "$?" "pMAC TX is not active"
105
106 traffic_test $tx "pmac"
107 check_err "$?" "Traffic did not get sent through $tx's pMAC"
108
109 ethtool --set-mm $tx verify-enabled off tx-enabled off
110
111 log_test "Manual configuration without verification: $tx to $rx"
112 }
113
114 manual_without_verification_h1_to_h2()
115 {
116 manual_without_verification $h1 $h2
117 }
118
119 manual_without_verification_h2_to_h1()
120 {
121 manual_without_verification $h2 $h1
122 }
123
124 manual_failed_verification()
125 {
126 local tx=$1; shift
127 local rx=$1; shift
128
129 RET=0
130
131 ethtool --set-mm $rx pmac-enabled off
132 ethtool --set-mm $tx verify-enabled on tx-enabled on
133
134 # Wait for verification to time out
135 sleep 1
136
137 ethtool --json --show-mm $tx | jq -r '.[]."verify-status"' | \
138 grep -q 'SUCCEEDED'
139 check_fail "$?" "Verification succeeded when it shouldn't have"
140
141 ethtool --json --show-mm $tx | jq -r '.[]."tx-active"' | grep -q 'true'
142 check_fail "$?" "pMAC TX is active when it shouldn't have"
143
144 traffic_test $tx "emac"
145 check_err "$?" "Traffic did not get sent through $tx's eMAC"
146
147 ethtool --set-mm $tx verify-enabled off tx-enabled off
148 ethtool --set-mm $rx pmac-enabled on
149
150 log_test "Manual configuration with failed verification: $tx to $rx"
151 }
152
153 manual_failed_verification_h1_to_h2()
154 {
155 manual_failed_verification $h1 $h2
156 }
157
158 manual_failed_verification_h2_to_h1()
159 {
160 manual_failed_verification $h2 $h1
161 }
162
163 smallest_supported_add_frag_size()
164 {
165 local iface=$1
166 local rx_min_frag_size=
167
168 rx_min_frag_size=$(ethtool --json --show-mm $iface | \
169 jq '.[]."rx-min-frag-size"')
170
171 if [ $rx_min_frag_size -le 60 ]; then
172 echo 0
173 elif [ $rx_min_frag_size -le 124 ]; then
174 echo 1
175 elif [ $rx_min_frag_size -le 188 ]; then
176 echo 2
177 elif [ $rx_min_frag_size -le 252 ]; then
178 echo 3
179 else
180 echo "$iface: RX min frag size $rx_min_frag_size cannot be advertised over LLDP"
181 exit 1
182 fi
183 }
184
185 expected_add_frag_size()
186 {
187 local iface=$1
188 local requested=$2
189 local min=$(smallest_supported_add_frag_size $iface)
190
191 [ $requested -le $min ] && echo $min || echo $requested
192 }
193
194 lldp_change_add_frag_size()
195 {
196 local add_frag_size=$1
197 local pattern=
198
199 lldptool -T -i $h1 -V addEthCaps addFragSize=$add_frag_size >/dev/null
200 # Wait for TLVs to be received
201 sleep 2
202 pattern=$(printf "Additional fragment size: %d" \
203 $(expected_add_frag_size $h1 $add_frag_size))
204 lldptool -i $h2 -t -n -V addEthCaps | grep -q "$pattern"
205 }
206
207 lldp()
208 {
209 RET=0
210
211 systemctl start lldpad
212
213 # Configure the interfaces to receive and transmit LLDPDUs
214 lldptool -L -i $h1 adminStatus=rxtx >/dev/null
215 lldptool -L -i $h2 adminStatus=rxtx >/dev/null
216
217 # Enable the transmission of Additional Ethernet Capabilities TLV
218 lldptool -T -i $h1 -V addEthCaps enableTx=yes >/dev/null
219 lldptool -T -i $h2 -V addEthCaps enableTx=yes >/dev/null
220
221 # Wait for TLVs to be received
222 sleep 2
223
224 lldptool -i $h1 -t -n -V addEthCaps | \
225 grep -q "Preemption capability active"
226 check_err "$?" "$h1 pMAC TX is not active"
227
228 lldptool -i $h2 -t -n -V addEthCaps | \
229 grep -q "Preemption capability active"
230 check_err "$?" "$h2 pMAC TX is not active"
231
232 lldp_change_add_frag_size 3
233 check_err "$?" "addFragSize 3"
234
235 lldp_change_add_frag_size 2
236 check_err "$?" "addFragSize 2"
237
238 lldp_change_add_frag_size 1
239 check_err "$?" "addFragSize 1"
240
241 lldp_change_add_frag_size 0
242 check_err "$?" "addFragSize 0"
243
244 traffic_test $h1 "pmac"
245 check_err "$?" "Traffic did not get sent through $h1's pMAC"
246
247 traffic_test $h2 "pmac"
248 check_err "$?" "Traffic did not get sent through $h2's pMAC"
249
250 systemctl stop lldpad
251
252 log_test "LLDP"
253 }
254
255 h1_create()
256 {
257 ip link set dev $h1 up
258
259 tc qdisc add dev $h1 root mqprio num_tc 4 map 0 1 2 3 \
260 queues 1@0 1@1 1@2 1@3 \
261 fp P E E E \
262 hw 1
263
264 ethtool --set-mm $h1 pmac-enabled on tx-enabled off verify-enabled off
265 }
266
267 h2_create()
268 {
269 ip link set dev $h2 up
270
271 ethtool --set-mm $h2 pmac-enabled on tx-enabled off verify-enabled off
272
273 tc qdisc add dev $h2 root mqprio num_tc 4 map 0 1 2 3 \
274 queues 1@0 1@1 1@2 1@3 \
275 fp P E E E \
276 hw 1
277 }
278
279 h1_destroy()
280 {
281 ethtool --set-mm $h1 pmac-enabled off tx-enabled off verify-enabled off
282
283 tc qdisc del dev $h1 root
284
285 ip link set dev $h1 down
286 }
287
288 h2_destroy()
289 {
290 tc qdisc del dev $h2 root
291
292 ethtool --set-mm $h2 pmac-enabled off tx-enabled off verify-enabled off
293
294 ip link set dev $h2 down
295 }
296
297 setup_prepare()
298 {
299 h1=${NETIFS[p1]}
300 h2=${NETIFS[p2]}
301
302 h1_create
303 h2_create
304 }
305
306 cleanup()
307 {
308 pre_cleanup
309
310 h2_destroy
311 h1_destroy
312 }
313
314 check_ethtool_mm_support
315 check_tc_fp_support
316 require_command lldptool
317 bail_on_lldpad "autoconfigure the MAC Merge layer" "configure it manually"
318
319 for netif in ${NETIFS[@]}; do
320 ethtool --show-mm $netif 2>&1 &> /dev/null
321 if [[ $? -ne 0 ]]; then
322 echo "SKIP: $netif does not support MAC Merge"
323 exit $ksft_skip
324 fi
325
326 if check_ethtool_pmac_std_stats_support $netif eth-mac; then
327 has_pmac_stats[$netif]=true
328 else
329 has_pmac_stats[$netif]=false
330 echo "$netif does not report pMAC statistics, falling back to aggregate"
331 fi
332 done
333
334 trap cleanup EXIT
335
336 setup_prepare
337 setup_wait
338
339 tests_run
340
341 exit $EXIT_STATUS
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