selftests: net: bridge: add test for igmpv3 inc -> is_include report

The test checks for the following case:
   state          report        result                 action
 INCLUDE (A)    IS_IN (B)     INCLUDE (A+B)            (B)=GMI
Signed-off-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/net/forwarding/bridge_igmp.sh

 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
-ALL_TESTS="v2reportleave_test v3include_test v3inc_allow_test"
+ALL_TESTS="v2reportleave_test v3include_test v3inc_allow_test v3inc_is_include_test"
 NUM_NETIFS=4
 CHECK_TC="yes"
 TEST_GROUP="239.10.10.10"
@@ -12,6 +12,8 @@ ALL_MAC="01:00:5e:00:00:01"
 
 # IGMPv3 is_in report: grp 239.10.10.10 is_include 192.0.2.1,192.0.2.2,192.0.2.3
 MZPKT_IS_INC="22:00:9d:de:00:00:00:01:01:00:00:03:ef:0a:0a:0a:c0:00:02:01:c0:00:02:02:c0:00:02:03"
+# IGMPv3 is_in report: grp 239.10.10.10 is_include 192.0.2.10,192.0.2.11,192.0.2.12
+MZPKT_IS_INC2="22:00:9d:c3:00:00:00:01:01:00:00:03:ef:0a:0a:0a:c0:00:02:0a:c0:00:02:0b:c0:00:02:0c"
 # IGMPv3 allow report: grp 239.10.10.10 allow 192.0.2.10,192.0.2.11,192.0.2.12
 MZPKT_ALLOW="22:00:99:c3:00:00:00:01:05:00:00:03:ef:0a:0a:0a:c0:00:02:0a:c0:00:02:0b:c0:00:02:0c"
 
@@ -290,6 +292,27 @@ v3inc_allow_test()
 	v3cleanup $swp1 $TEST_GROUP
 }
 
+v3inc_is_include_test()
+{
+	RET=0
+	local X=("192.0.2.10" "192.0.2.11" "192.0.2.12")
+
+	v3include_prepare $h1 $ALL_MAC $ALL_GROUP
+
+	$MZ $h1 -c 1 -b $ALL_MAC -B $ALL_GROUP -t ip "proto=2,p=$MZPKT_IS_INC2" -q
+	sleep 1
+	check_sg_entries "is_include" "${X[@]}"
+
+	check_sg_state 0 "${X[@]}"
+
+	check_sg_fwding 1 "${X[@]}"
+	check_sg_fwding 0 "192.0.2.100"
+
+	log_test "IGMPv3 report $TEST_GROUP include -> is_include"
+
+	v3cleanup $swp1 $TEST_GROUP
+}
+
 trap cleanup EXIT
 
 setup_prepare