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2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 
 kernel/tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh
....@@ -1,11 +1,44 @@
11 #!/bin/bash
22 # SPDX-License-Identifier: GPL-2.0
33 
4
-# This test uses standard topology for testing gretap. See
5
-# mirror_gre_topo_lib.sh for more details.
6
-#
74 # Test for "tc action mirred egress mirror" when the underlay route points at a
85 # vlan device on top of a bridge device with vlan filtering (802.1q).
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+#
7
+#   +---------------------+                             +---------------------+
8
+#   | H1                  |                             |                  H2 |
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+#   |     + $h1           |                             |           $h2 +     |
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+#   |     | 192.0.2.1/28  |                             |  192.0.2.2/28 |     |
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+#   +-----|---------------+                             +---------------|-----+
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+#         |                                                             |
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+#   +-----|-------------------------------------------------------------|-----+
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+#   | SW  o--> mirred egress mirror dev {gt4,gt6}                       |     |
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+#   |     |                                                             |     |
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+#   | +---|-------------------------------------------------------------|---+ |
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+#   | |   + $swp1                    br1                          $swp2 +   | |
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+#   | |                                                                     | |
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+#   | |   + $swp3                                                           | |
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+#   | +---|-----------------------------------------------------------------+ |
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+#   |     |                        |                                          |
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+#   |     |                        + br1.555                                  |
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+#   |     |                          192.0.2.130/28                           |
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+#   |     |                          2001:db8:2::2/64                         |
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+#   |     |                                                                   |
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+#   |     |                     + gt6 (ip6gretap)      + gt4 (gretap)         |
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+#   |     |                     : loc=2001:db8:2::1    : loc=192.0.2.129      |
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+#   |     |                     : rem=2001:db8:2::2    : rem=192.0.2.130      |
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+#   |     |                     : ttl=100              : ttl=100              |
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+#   |     |                     : tos=inherit          : tos=inherit          |
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+#   |     |                     :                      :                      |
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+#   +-----|---------------------:----------------------:----------------------+
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+#         |                     :                      :
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+#   +-----|---------------------:----------------------:----------------------+
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+#   | H3  + $h3                 + h3-gt6 (ip6gretap)   + h3-gt4 (gretap)      |
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+#   |     |                       loc=2001:db8:2::2      loc=192.0.2.130      |
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+#   |     + $h3.555               rem=2001:db8:2::1      rem=192.0.2.129      |
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+#   |       192.0.2.130/28        ttl=100                ttl=100              |
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+#   |       2001:db8:2::2/64      tos=inherit            tos=inherit          |
40
+#   |                                                                         |
41
+#   +-------------------------------------------------------------------------+
942 
1043 ALL_TESTS="
1144 	test_gretap
....@@ -29,6 +62,15 @@
2962 source mirror_gre_topo_lib.sh
3063 
3164 require_command $ARPING
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+
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+h3_addr_add_del()
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+{
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+	local add_del=$1; shift
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+	local dev=$1; shift
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+
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+	ip addr $add_del dev $dev 192.0.2.130/28
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+	ip addr $add_del dev $dev 2001:db8:2::2/64
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+}
3274 
3375 setup_prepare()
3476 {
....@@ -55,7 +97,8 @@
5597 	ip route rep 192.0.2.130/32 dev br1.555
5698 	ip -6 route rep 2001:db8:2::2/128 dev br1.555
5799 
58
-	vlan_create $h3 555 v$h3 192.0.2.130/28 2001:db8:2::2/64
100
+	vlan_create $h3 555 v$h3
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+	h3_addr_add_del add $h3.555
59102 
60103 	ip link set dev $swp3 master br1
61104 	bridge vlan add dev $swp3 vid 555
....@@ -68,6 +111,8 @@
68111 
69112 	ip link set dev $swp2 nomaster
70113 	ip link set dev $swp3 nomaster
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+
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+	h3_addr_add_del del $h3.555
71116 	vlan_destroy $h3 555
72117 	vlan_destroy br1 555
73118 
....@@ -182,13 +227,19 @@
182227 	quick_test_span_gre_dir $tundev ingress
183228 	quick_test_span_vlan_dir $h3 555 ingress
184229 
230
+	h3_addr_add_del del $h3.555
185231 	bridge vlan add dev $swp3 vid 555 pvid untagged
186
-	sleep 1
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+	h3_addr_add_del add $h3
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+	sleep 5
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+
187235 	quick_test_span_gre_dir $tundev ingress
188236 	fail_test_span_vlan_dir $h3 555 ingress
189237 
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+	h3_addr_add_del del $h3
190239 	bridge vlan add dev $swp3 vid 555
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-	sleep 1
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+	h3_addr_add_del add $h3.555
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+	sleep 5
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+
192243 	quick_test_span_gre_dir $tundev ingress
193244 	quick_test_span_vlan_dir $h3 555 ingress
194245 
....@@ -218,12 +269,25 @@
218269 	mirror_install $swp1 ingress $tundev "matchall $tcflags"
219270 	quick_test_span_gre_dir $tundev ingress
220271 
221
-	bridge fdb del dev $swp3 $h3mac vlan 555 master
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-	bridge fdb add dev $swp2 $h3mac vlan 555 master
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-	sleep 1
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-	fail_test_span_gre_dir $tundev ingress
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+	while ((RET == 0)); do
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+		bridge fdb del dev $swp3 $h3mac vlan 555 master 2>/dev/null
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+		bridge fdb add dev $swp2 $h3mac vlan 555 master static
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+		sleep 1
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+		fail_test_span_gre_dir $tundev ingress
225277 
226
-	bridge fdb del dev $swp2 $h3mac vlan 555 master
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+		if ! bridge fdb sh dev $swp2 vlan 555 master \
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+		    | grep -q $h3mac; then
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+			printf "TEST: %-60s  [RETRY]\n" \
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+				"$what: MAC roaming ($tcflags)"
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+			# ARP or ND probably reprimed the FDB while the test
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+			# was running. We would get a spurious failure.
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+			RET=0
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+			continue
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+		fi
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+		break
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+	done
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+
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+	bridge fdb del dev $swp2 $h3mac vlan 555 master 2>/dev/null
227291 	# Re-prime FDB
228292 	$ARPING -I br1.555 192.0.2.130 -fqc 1
229293 	sleep 1