selftests: net: Add VXLAN MDB test

Add test cases for VXLAN MDB, testing the control and data paths. Two
different sets of namespaces (i.e., ns{1,2}_v4 and ns{1,2}_v6) are used
in order to test VXLAN MDB with both IPv4 and IPv6 underlays,
respectively.

Example truncated output:

 # ./test_vxlan_mdb.sh
 [...]
 Tests passed: 620
 Tests failed:   0

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 2320 insertions, 0 deletions

diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 099741290184..a179fbd6f972 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -81,6 +81,7 @@ TEST_GEN_FILES += sctp_hello
 TEST_GEN_FILES += csum
 TEST_GEN_FILES += nat6to4.o
 TEST_GEN_FILES += ip_local_port_range
+TEST_PROGS += test_vxlan_mdb.sh
 
 TEST_FILES := settings
 
diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config
index cc9fd55ab869..4c7ce07afa2f 100644
--- a/tools/testing/selftests/net/config
+++ b/tools/testing/selftests/net/config
@@ -48,3 +48,4 @@ CONFIG_BAREUDP=m
 CONFIG_IPV6_IOAM6_LWTUNNEL=y
 CONFIG_CRYPTO_SM4_GENERIC=y
 CONFIG_AMT=m
+CONFIG_VXLAN=m
diff --git a/tools/testing/selftests/net/test_vxlan_mdb.sh b/tools/testing/selftests/net/test_vxlan_mdb.sh
new file mode 100755
index 000000000000..31e5f0f8859d
--- /dev/null
+++ b/tools/testing/selftests/net/test_vxlan_mdb.sh
@@ -0,0 +1,2318 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# This test is for checking VXLAN MDB functionality. The topology consists of
+# two sets of namespaces: One for the testing of IPv4 underlay and another for
+# IPv6. In both cases, both IPv4 and IPv6 overlay traffic are tested.
+#
+# Data path functionality is tested by sending traffic from one of the upper
+# namespaces and checking using ingress tc filters that the expected traffic
+# was received by one of the lower namespaces.
+#
+# +------------------------------------+ +------------------------------------+
+# | ns1_v4                             | | ns1_v6                             |
+# |                                    | |                                    |
+# |    br0.10    br0.4000  br0.20      | |    br0.10    br0.4000  br0.20      |
+# |       +         +         +        | |       +         +         +        |
+# |       |         |         |        | |       |         |         |        |
+# |       |         |         |        | |       |         |         |        |
+# |       +---------+---------+        | |       +---------+---------+        |
+# |                 |                  | |                 |                  |
+# |                 |                  | |                 |                  |
+# |                 +                  | |                 +                  |
+# |                br0                 | |                br0                 |
+# |                 +                  | |                 +                  |
+# |                 |                  | |                 |                  |
+# |                 |                  | |                 |                  |
+# |                 +                  | |                 +                  |
+# |                vx0                 | |                vx0                 |
+# |                                    | |                                    |
+# |                                    | |                                    |
+# |               veth0                | |               veth0                |
+# |                 +                  | |                 +                  |
+# +-----------------|------------------+ +-----------------|------------------+
+#                   |                                      |
+# +-----------------|------------------+ +-----------------|------------------+
+# |                 +                  | |                 +                  |
+# |               veth0                | |               veth0                |
+# |                                    | |                                    |
+# |                                    | |                                    |
+# |                vx0                 | |                vx0                 |
+# |                 +                  | |                 +                  |
+# |                 |                  | |                 |                  |
+# |                 |                  | |                 |                  |
+# |                 +                  | |                 +                  |
+# |                br0                 | |                br0                 |
+# |                 +                  | |                 +                  |
+# |                 |                  | |                 |                  |
+# |                 |                  | |                 |                  |
+# |       +---------+---------+        | |       +---------+---------+        |
+# |       |         |         |        | |       |         |         |        |
+# |       |         |         |        | |       |         |         |        |
+# |       +         +         +        | |       +         +         +        |
+# |    br0.10    br0.4000  br0.10      | |    br0.10    br0.4000  br0.20      |
+# |                                    | |                                    |
+# | ns2_v4                             | | ns2_v6                             |
+# +------------------------------------+ +------------------------------------+
+
+ret=0
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
+CONTROL_PATH_TESTS="
+	basic_star_g_ipv4_ipv4
+	basic_star_g_ipv6_ipv4
+	basic_star_g_ipv4_ipv6
+	basic_star_g_ipv6_ipv6
+	basic_sg_ipv4_ipv4
+	basic_sg_ipv6_ipv4
+	basic_sg_ipv4_ipv6
+	basic_sg_ipv6_ipv6
+	star_g_ipv4_ipv4
+	star_g_ipv6_ipv4
+	star_g_ipv4_ipv6
+	star_g_ipv6_ipv6
+	sg_ipv4_ipv4
+	sg_ipv6_ipv4
+	sg_ipv4_ipv6
+	sg_ipv6_ipv6
+	dump_ipv4_ipv4
+	dump_ipv6_ipv4
+	dump_ipv4_ipv6
+	dump_ipv6_ipv6
+"
+
+DATA_PATH_TESTS="
+	encap_params_ipv4_ipv4
+	encap_params_ipv6_ipv4
+	encap_params_ipv4_ipv6
+	encap_params_ipv6_ipv6
+	starg_exclude_ir_ipv4_ipv4
+	starg_exclude_ir_ipv6_ipv4
+	starg_exclude_ir_ipv4_ipv6
+	starg_exclude_ir_ipv6_ipv6
+	starg_include_ir_ipv4_ipv4
+	starg_include_ir_ipv6_ipv4
+	starg_include_ir_ipv4_ipv6
+	starg_include_ir_ipv6_ipv6
+	starg_exclude_p2mp_ipv4_ipv4
+	starg_exclude_p2mp_ipv6_ipv4
+	starg_exclude_p2mp_ipv4_ipv6
+	starg_exclude_p2mp_ipv6_ipv6
+	starg_include_p2mp_ipv4_ipv4
+	starg_include_p2mp_ipv6_ipv4
+	starg_include_p2mp_ipv4_ipv6
+	starg_include_p2mp_ipv6_ipv6
+	egress_vni_translation_ipv4_ipv4
+	egress_vni_translation_ipv6_ipv4
+	egress_vni_translation_ipv4_ipv6
+	egress_vni_translation_ipv6_ipv6
+	all_zeros_mdb_ipv4
+	all_zeros_mdb_ipv6
+	mdb_fdb_ipv4_ipv4
+	mdb_fdb_ipv6_ipv4
+	mdb_fdb_ipv4_ipv6
+	mdb_fdb_ipv6_ipv6
+	mdb_torture_ipv4_ipv4
+	mdb_torture_ipv6_ipv4
+	mdb_torture_ipv4_ipv6
+	mdb_torture_ipv6_ipv6
+"
+
+# All tests in this script. Can be overridden with -t option.
+TESTS="
+	$CONTROL_PATH_TESTS
+	$DATA_PATH_TESTS
+"
+VERBOSE=0
+PAUSE_ON_FAIL=no
+PAUSE=no
+
+################################################################################
+# Utilities
+
+log_test()
+{
+	local rc=$1
+	local expected=$2
+	local msg="$3"
+
+	if [ ${rc} -eq ${expected} ]; then
+		printf "TEST: %-60s  [ OK ]\n" "${msg}"
+		nsuccess=$((nsuccess+1))
+	else
+		ret=1
+		nfail=$((nfail+1))
+		printf "TEST: %-60s  [FAIL]\n" "${msg}"
+		if [ "$VERBOSE" = "1" ]; then
+			echo "    rc=$rc, expected $expected"
+		fi
+
+		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
+		echo
+			echo "hit enter to continue, 'q' to quit"
+			read a
+			[ "$a" = "q" ] && exit 1
+		fi
+	fi
+
+	if [ "${PAUSE}" = "yes" ]; then
+		echo
+		echo "hit enter to continue, 'q' to quit"
+		read a
+		[ "$a" = "q" ] && exit 1
+	fi
+
+	[ "$VERBOSE" = "1" ] && echo
+}
+
+run_cmd()
+{
+	local cmd="$1"
+	local out
+	local stderr="2>/dev/null"
+
+	if [ "$VERBOSE" = "1" ]; then
+		printf "COMMAND: $cmd\n"
+		stderr=
+	fi
+
+	out=$(eval $cmd $stderr)
+	rc=$?
+	if [ "$VERBOSE" = "1" -a -n "$out" ]; then
+		echo "    $out"
+	fi
+
+	return $rc
+}
+
+tc_check_packets()
+{
+	local ns=$1; shift
+	local id=$1; shift
+	local handle=$1; shift
+	local count=$1; shift
+	local pkts
+
+	sleep 0.1
+	pkts=$(tc -n $ns -j -s filter show $id \
+		| jq ".[] | select(.options.handle == $handle) | \
+		.options.actions[0].stats.packets")
+	[[ $pkts == $count ]]
+}
+
+################################################################################
+# Setup
+
+setup_common_ns()
+{
+	local ns=$1; shift
+	local local_addr=$1; shift
+
+	ip netns exec $ns sysctl -qw net.ipv4.ip_forward=1
+	ip netns exec $ns sysctl -qw net.ipv4.fib_multipath_use_neigh=1
+	ip netns exec $ns sysctl -qw net.ipv4.conf.default.ignore_routes_with_linkdown=1
+	ip netns exec $ns sysctl -qw net.ipv6.conf.all.keep_addr_on_down=1
+	ip netns exec $ns sysctl -qw net.ipv6.conf.all.forwarding=1
+	ip netns exec $ns sysctl -qw net.ipv6.conf.default.forwarding=1
+	ip netns exec $ns sysctl -qw net.ipv6.conf.default.ignore_routes_with_linkdown=1
+	ip netns exec $ns sysctl -qw net.ipv6.conf.all.accept_dad=0
+	ip netns exec $ns sysctl -qw net.ipv6.conf.default.accept_dad=0
+
+	ip -n $ns link set dev lo up
+	ip -n $ns address add $local_addr dev lo
+
+	ip -n $ns link set dev veth0 up
+
+	ip -n $ns link add name br0 up type bridge vlan_filtering 1 \
+		vlan_default_pvid 0 mcast_snooping 0
+
+	ip -n $ns link add link br0 name br0.10 up type vlan id 10
+	bridge -n $ns vlan add vid 10 dev br0 self
+
+	ip -n $ns link add link br0 name br0.20 up type vlan id 20
+	bridge -n $ns vlan add vid 20 dev br0 self
+
+	ip -n $ns link add link br0 name br0.4000 up type vlan id 4000
+	bridge -n $ns vlan add vid 4000 dev br0 self
+
+	ip -n $ns link add name vx0 up master br0 type vxlan \
+		local $local_addr dstport 4789 external vnifilter
+	bridge -n $ns link set dev vx0 vlan_tunnel on
+
+	bridge -n $ns vlan add vid 10 dev vx0
+	bridge -n $ns vlan add vid 10 dev vx0 tunnel_info id 10010
+	bridge -n $ns vni add vni 10010 dev vx0
+
+	bridge -n $ns vlan add vid 20 dev vx0
+	bridge -n $ns vlan add vid 20 dev vx0 tunnel_info id 10020
+	bridge -n $ns vni add vni 10020 dev vx0
+
+	bridge -n $ns vlan add vid 4000 dev vx0 pvid
+	bridge -n $ns vlan add vid 4000 dev vx0 tunnel_info id 14000
+	bridge -n $ns vni add vni 14000 dev vx0
+}
+
+setup_common()
+{
+	local ns1=$1; shift
+	local ns2=$1; shift
+	local local_addr1=$1; shift
+	local local_addr2=$1; shift
+
+	ip netns add $ns1
+	ip netns add $ns2
+
+	ip link add name veth0 type veth peer name veth1
+	ip link set dev veth0 netns $ns1 name veth0
+	ip link set dev veth1 netns $ns2 name veth0
+
+	setup_common_ns $ns1 $local_addr1
+	setup_common_ns $ns2 $local_addr2
+}
+
+setup_v4()
+{
+	setup_common ns1_v4 ns2_v4 192.0.2.1 192.0.2.2
+
+	ip -n ns1_v4 address add 192.0.2.17/28 dev veth0
+	ip -n ns2_v4 address add 192.0.2.18/28 dev veth0
+
+	ip -n ns1_v4 route add default via 192.0.2.18
+	ip -n ns2_v4 route add default via 192.0.2.17
+}
+
+cleanup_v4()
+{
+	ip netns del ns2_v4
+	ip netns del ns1_v4
+}
+
+setup_v6()
+{
+	setup_common ns1_v6 ns2_v6 2001:db8:1::1 2001:db8:1::2
+
+	ip -n ns1_v6 address add 2001:db8:2::1/64 dev veth0 nodad
+	ip -n ns2_v6 address add 2001:db8:2::2/64 dev veth0 nodad
+
+	ip -n ns1_v6 route add default via 2001:db8:2::2
+	ip -n ns2_v6 route add default via 2001:db8:2::1
+}
+
+cleanup_v6()
+{
+	ip netns del ns2_v6
+	ip netns del ns1_v6
+}
+
+setup()
+{
+	set -e
+
+	setup_v4
+	setup_v6
+
+	sleep 5
+
+	set +e
+}
+
+cleanup()
+{
+	cleanup_v6 &> /dev/null
+	cleanup_v4 &> /dev/null
+}
+
+################################################################################
+# Tests - Control path
+
+basic_common()
+{
+	local ns1=$1; shift
+	local grp_key=$1; shift
+	local vtep_ip=$1; shift
+
+	# Test basic control path operations common to all MDB entry types.
+
+	# Basic add, replace and delete behavior.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	log_test $? 0 "MDB entry addition"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\""
+	log_test $? 0 "MDB entry presence after addition"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	log_test $? 0 "MDB entry replacement"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\""
+	log_test $? 0 "MDB entry presence after replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 $grp_key dst $vtep_ip src_vni 10010"
+	log_test $? 0 "MDB entry deletion"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\""
+	log_test $? 1 "MDB entry presence after deletion"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 $grp_key dst $vtep_ip src_vni 10010"
+	log_test $? 255 "Non-existent MDB entry deletion"
+
+	# Default protocol and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\" | grep \"proto static\""
+	log_test $? 0 "MDB entry default protocol"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 $grp_key permanent proto 123 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\" | grep \"proto 123\""
+	log_test $? 0 "MDB entry protocol replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 $grp_key dst $vtep_ip src_vni 10010"
+
+	# Default destination port and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\" | grep \" dst_port \""
+	log_test $? 1 "MDB entry default destination port"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 $grp_key permanent dst $vtep_ip dst_port 1234 src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\" | grep \"dst_port 1234\""
+	log_test $? 0 "MDB entry destination port replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 $grp_key dst $vtep_ip src_vni 10010"
+
+	# Default destination VNI and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\" | grep \" vni \""
+	log_test $? 1 "MDB entry default destination VNI"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 $grp_key permanent dst $vtep_ip vni 1234 src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\" | grep \"vni 1234\""
+	log_test $? 0 "MDB entry destination VNI replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 $grp_key dst $vtep_ip src_vni 10010"
+
+	# Default outgoing interface and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\" | grep \" via \""
+	log_test $? 1 "MDB entry default outgoing interface"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010 via veth0"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep \"$grp_key\" | grep \"via veth0\""
+	log_test $? 0 "MDB entry outgoing interface replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 $grp_key dst $vtep_ip src_vni 10010"
+
+	# Common error cases.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port veth0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	log_test $? 255 "MDB entry with mismatch between device and port"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key temp dst $vtep_ip src_vni 10010"
+	log_test $? 255 "MDB entry with temp state"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent vid 10 dst $vtep_ip src_vni 10010"
+	log_test $? 255 "MDB entry with VLAN"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp 01:02:03:04:05:06 permanent dst $vtep_ip src_vni 10010"
+	log_test $? 255 "MDB entry MAC address"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent"
+	log_test $? 255 "MDB entry without extended parameters"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent proto 3 dst $vtep_ip src_vni 10010"
+	log_test $? 255 "MDB entry with an invalid protocol"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip vni $((2 ** 24)) src_vni 10010"
+	log_test $? 255 "MDB entry with an invalid destination VNI"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni $((2 ** 24))"
+	log_test $? 255 "MDB entry with an invalid source VNI"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent src_vni 10010"
+	log_test $? 255 "MDB entry without a remote destination IP"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 $grp_key permanent dst $vtep_ip src_vni 10010"
+	log_test $? 255 "Duplicate MDB entries"
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 $grp_key dst $vtep_ip src_vni 10010"
+}
+
+basic_star_g_ipv4_ipv4()
+{
+	local ns1=ns1_v4
+	local grp_key="grp 239.1.1.1"
+	local vtep_ip=198.51.100.100
+
+	echo
+	echo "Control path: Basic (*, G) operations - IPv4 overlay / IPv4 underlay"
+	echo "--------------------------------------------------------------------"
+
+	basic_common $ns1 "$grp_key" $vtep_ip
+}
+
+basic_star_g_ipv6_ipv4()
+{
+	local ns1=ns1_v4
+	local grp_key="grp ff0e::1"
+	local vtep_ip=198.51.100.100
+
+	echo
+	echo "Control path: Basic (*, G) operations - IPv6 overlay / IPv4 underlay"
+	echo "--------------------------------------------------------------------"
+
+	basic_common $ns1 "$grp_key" $vtep_ip
+}
+
+basic_star_g_ipv4_ipv6()
+{
+	local ns1=ns1_v6
+	local grp_key="grp 239.1.1.1"
+	local vtep_ip=2001:db8:1000::1
+
+	echo
+	echo "Control path: Basic (*, G) operations - IPv4 overlay / IPv6 underlay"
+	echo "--------------------------------------------------------------------"
+
+	basic_common $ns1 "$grp_key" $vtep_ip
+}
+
+basic_star_g_ipv6_ipv6()
+{
+	local ns1=ns1_v6
+	local grp_key="grp ff0e::1"
+	local vtep_ip=2001:db8:1000::1
+
+	echo
+	echo "Control path: Basic (*, G) operations - IPv6 overlay / IPv6 underlay"
+	echo "--------------------------------------------------------------------"
+
+	basic_common $ns1 "$grp_key" $vtep_ip
+}
+
+basic_sg_ipv4_ipv4()
+{
+	local ns1=ns1_v4
+	local grp_key="grp 239.1.1.1 src 192.0.2.129"
+	local vtep_ip=198.51.100.100
+
+	echo
+	echo "Control path: Basic (S, G) operations - IPv4 overlay / IPv4 underlay"
+	echo "--------------------------------------------------------------------"
+
+	basic_common $ns1 "$grp_key" $vtep_ip
+}
+
+basic_sg_ipv6_ipv4()
+{
+	local ns1=ns1_v4
+	local grp_key="grp ff0e::1 src 2001:db8:100::1"
+	local vtep_ip=198.51.100.100
+
+	echo
+	echo "Control path: Basic (S, G) operations - IPv6 overlay / IPv4 underlay"
+	echo "---------------------------------------------------------------------"
+
+	basic_common $ns1 "$grp_key" $vtep_ip
+}
+
+basic_sg_ipv4_ipv6()
+{
+	local ns1=ns1_v6
+	local grp_key="grp 239.1.1.1 src 192.0.2.129"
+	local vtep_ip=2001:db8:1000::1
+
+	echo
+	echo "Control path: Basic (S, G) operations - IPv4 overlay / IPv6 underlay"
+	echo "--------------------------------------------------------------------"
+
+	basic_common $ns1 "$grp_key" $vtep_ip
+}
+
+basic_sg_ipv6_ipv6()
+{
+	local ns1=ns1_v6
+	local grp_key="grp ff0e::1 src 2001:db8:100::1"
+	local vtep_ip=2001:db8:1000::1
+
+	echo
+	echo "Control path: Basic (S, G) operations - IPv6 overlay / IPv6 underlay"
+	echo "--------------------------------------------------------------------"
+
+	basic_common $ns1 "$grp_key" $vtep_ip
+}
+
+star_g_common()
+{
+	local ns1=$1; shift
+	local grp=$1; shift
+	local src1=$1; shift
+	local src2=$1; shift
+	local src3=$1; shift
+	local vtep_ip=$1; shift
+	local all_zeros_grp=$1; shift
+
+	# Test control path operations specific to (*, G) entries.
+
+	# Basic add, replace and delete behavior.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip src_vni 10010"
+	log_test $? 0 "(*, G) MDB entry addition with source list"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \""
+	log_test $? 0 "(*, G) MDB entry presence after addition"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\""
+	log_test $? 0 "(S, G) MDB entry presence after addition"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip src_vni 10010"
+	log_test $? 0 "(*, G) MDB entry replacement with source list"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \""
+	log_test $? 0 "(*, G) MDB entry presence after replacement"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\""
+	log_test $? 0 "(S, G) MDB entry presence after replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 grp $grp dst $vtep_ip src_vni 10010"
+	log_test $? 0 "(*, G) MDB entry deletion"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \""
+	log_test $? 1 "(*, G) MDB entry presence after deletion"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\""
+	log_test $? 1 "(S, G) MDB entry presence after deletion"
+
+	# Default filter mode and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep exclude"
+	log_test $? 0 "(*, G) MDB entry default filter mode"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode include source_list $src1 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep include"
+	log_test $? 0 "(*, G) MDB entry after replacing filter mode to \"include\""
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\""
+	log_test $? 0 "(S, G) MDB entry after replacing filter mode to \"include\""
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\" | grep blocked"
+	log_test $? 1 "\"blocked\" flag after replacing filter mode to \"include\""
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep exclude"
+	log_test $? 0 "(*, G) MDB entry after replacing filter mode to \"exclude\""
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\""
+	log_test $? 0 "(S, G) MDB entry after replacing filter mode to \"exclude\""
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\" | grep blocked"
+	log_test $? 0 "\"blocked\" flag after replacing filter mode to \"exclude\""
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 grp $grp dst $vtep_ip src_vni 10010"
+
+	# Default source list and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep source_list"
+	log_test $? 1 "(*, G) MDB entry default source list"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1,$src2,$src3 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\""
+	log_test $? 0 "(S, G) MDB entry of 1st source after replacing source list"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src2\""
+	log_test $? 0 "(S, G) MDB entry of 2nd source after replacing source list"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src3\""
+	log_test $? 0 "(S, G) MDB entry of 3rd source after replacing source list"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1,$src3 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src1\""
+	log_test $? 0 "(S, G) MDB entry of 1st source after removing source"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src2\""
+	log_test $? 1 "(S, G) MDB entry of 2nd source after removing source"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \"src $src3\""
+	log_test $? 0 "(S, G) MDB entry of 3rd source after removing source"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 grp $grp dst $vtep_ip src_vni 10010"
+
+	# Default protocol and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \" | grep \"proto static\""
+	log_test $? 0 "(*, G) MDB entry default protocol"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \" src \" | grep \"proto static\""
+	log_test $? 0 "(S, G) MDB entry default protocol"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 proto bgp dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \" | grep \"proto bgp\""
+	log_test $? 0 "(*, G) MDB entry protocol after replacement"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \" src \" | grep \"proto bgp\""
+	log_test $? 0 "(S, G) MDB entry protocol after replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 grp $grp dst $vtep_ip src_vni 10010"
+
+	# Default destination port and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \" | grep \" dst_port \""
+	log_test $? 1 "(*, G) MDB entry default destination port"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \" src \" | grep \" dst_port \""
+	log_test $? 1 "(S, G) MDB entry default destination port"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip dst_port 1234 src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \" | grep \" dst_port 1234 \""
+	log_test $? 0 "(*, G) MDB entry destination port after replacement"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \" src \" | grep \" dst_port 1234 \""
+	log_test $? 0 "(S, G) MDB entry destination port after replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 grp $grp dst $vtep_ip src_vni 10010"
+
+	# Default destination VNI and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \" | grep \" vni \""
+	log_test $? 1 "(*, G) MDB entry default destination VNI"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \" src \" | grep \" vni \""
+	log_test $? 1 "(S, G) MDB entry default destination VNI"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip vni 1234 src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \" | grep \" vni 1234 \""
+	log_test $? 0 "(*, G) MDB entry destination VNI after replacement"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \" src \" | grep \" vni 1234 \""
+	log_test $? 0 "(S, G) MDB entry destination VNI after replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 grp $grp dst $vtep_ip src_vni 10010"
+
+	# Default outgoing interface and replacement.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \" | grep \" via \""
+	log_test $? 1 "(*, G) MDB entry default outgoing interface"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \" src \" | grep \" via \""
+	log_test $? 1 "(S, G) MDB entry default outgoing interface"
+
+	run_cmd "bridge -n $ns1 mdb replace dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $src1 dst $vtep_ip src_vni 10010 via veth0"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep -v \" src \" | grep \" via veth0 \""
+	log_test $? 0 "(*, G) MDB entry outgoing interface after replacement"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep \" src \" | grep \" via veth0 \""
+	log_test $? 0 "(S, G) MDB entry outgoing interface after replacement"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 grp $grp dst $vtep_ip src_vni 10010"
+
+	# Error cases.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $all_zeros_grp permanent filter_mode exclude dst $vtep_ip src_vni 10010"
+	log_test $? 255 "All-zeros group with filter mode"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $all_zeros_grp permanent source_list $src1 dst $vtep_ip src_vni 10010"
+	log_test $? 255 "All-zeros group with source list"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent filter_mode include dst $vtep_ip src_vni 10010"
+	log_test $? 255 "(*, G) INCLUDE with an empty source list"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent filter_mode exclude source_list $grp dst $vtep_ip src_vni 10010"
+	log_test $? 255 "Invalid source in source list"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp permanent source_list $src1 dst $vtep_ip src_vni 10010"
+	log_test $? 255 "Source list without filter mode"
+}
+
+star_g_ipv4_ipv4()
+{
+	local ns1=ns1_v4
+	local grp=239.1.1.1
+	local src1=192.0.2.129
+	local src2=192.0.2.130
+	local src3=192.0.2.131
+	local vtep_ip=198.51.100.100
+	local all_zeros_grp=0.0.0.0
+
+	echo
+	echo "Control path: (*, G) operations - IPv4 overlay / IPv4 underlay"
+	echo "--------------------------------------------------------------"
+
+	star_g_common $ns1 $grp $src1 $src2 $src3 $vtep_ip $all_zeros_grp
+}
+
+star_g_ipv6_ipv4()
+{
+	local ns1=ns1_v4
+	local grp=ff0e::1
+	local src1=2001:db8:100::1
+	local src2=2001:db8:100::2
+	local src3=2001:db8:100::3
+	local vtep_ip=198.51.100.100
+	local all_zeros_grp=::
+
+	echo
+	echo "Control path: (*, G) operations - IPv6 overlay / IPv4 underlay"
+	echo "--------------------------------------------------------------"
+
+	star_g_common $ns1 $grp $src1 $src2 $src3 $vtep_ip $all_zeros_grp
+}
+
+star_g_ipv4_ipv6()
+{
+	local ns1=ns1_v6
+	local grp=239.1.1.1
+	local src1=192.0.2.129
+	local src2=192.0.2.130
+	local src3=192.0.2.131
+	local vtep_ip=2001:db8:1000::1
+	local all_zeros_grp=0.0.0.0
+
+	echo
+	echo "Control path: (*, G) operations - IPv4 overlay / IPv6 underlay"
+	echo "--------------------------------------------------------------"
+
+	star_g_common $ns1 $grp $src1 $src2 $src3 $vtep_ip $all_zeros_grp
+}
+
+star_g_ipv6_ipv6()
+{
+	local ns1=ns1_v6
+	local grp=ff0e::1
+	local src1=2001:db8:100::1
+	local src2=2001:db8:100::2
+	local src3=2001:db8:100::3
+	local vtep_ip=2001:db8:1000::1
+	local all_zeros_grp=::
+
+	echo
+	echo "Control path: (*, G) operations - IPv6 overlay / IPv6 underlay"
+	echo "--------------------------------------------------------------"
+
+	star_g_common $ns1 $grp $src1 $src2 $src3 $vtep_ip $all_zeros_grp
+}
+
+sg_common()
+{
+	local ns1=$1; shift
+	local grp=$1; shift
+	local src=$1; shift
+	local vtep_ip=$1; shift
+	local all_zeros_grp=$1; shift
+
+	# Test control path operations specific to (S, G) entries.
+
+	# Default filter mode.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp src $src permanent dst $vtep_ip src_vni 10010"
+	run_cmd "bridge -n $ns1 -d -s mdb show dev vx0 | grep $grp | grep include"
+	log_test $? 0 "(S, G) MDB entry default filter mode"
+
+	run_cmd "bridge -n $ns1 mdb del dev vx0 port vx0 grp $grp src $src permanent dst $vtep_ip src_vni 10010"
+
+	# Error cases.
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp src $src permanent filter_mode include dst $vtep_ip src_vni 10010"
+	log_test $? 255 "(S, G) with filter mode"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp src $src permanent source_list $src dst $vtep_ip src_vni 10010"
+	log_test $? 255 "(S, G) with source list"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $grp src $grp permanent dst $vtep_ip src_vni 10010"
+	log_test $? 255 "(S, G) with an invalid source list"
+
+	run_cmd "bridge -n $ns1 mdb add dev vx0 port vx0 grp $all_zeros_grp src $src permanent dst $vtep_ip src_vni 10010"
+	log_test $? 255 "All-zeros group with source"
+}
+
+sg_ipv4_ipv4()
+{
+	local ns1=ns1_v4
+	local grp=239.1.1.1
+	local src=192.0.2.129
+	local vtep_ip=198.51.100.100
+	local all_zeros_grp=0.0.0.0
+
+	echo
+	echo "Control path: (S, G) operations - IPv4 overlay / IPv4 underlay"
+	echo "--------------------------------------------------------------"
+
+	sg_common $ns1 $grp $src $vtep_ip $all_zeros_grp
+}
+
+sg_ipv6_ipv4()
+{
+	local ns1=ns1_v4
+	local grp=ff0e::1
+	local src=2001:db8:100::1
+	local vtep_ip=198.51.100.100
+	local all_zeros_grp=::
+
+	echo
+	echo "Control path: (S, G) operations - IPv6 overlay / IPv4 underlay"
+	echo "--------------------------------------------------------------"
+
+	sg_common $ns1 $grp $src $vtep_ip $all_zeros_grp
+}
+
+sg_ipv4_ipv6()
+{
+	local ns1=ns1_v6
+	local grp=239.1.1.1
+	local src=192.0.2.129
+	local vtep_ip=2001:db8:1000::1
+	local all_zeros_grp=0.0.0.0
+
+	echo
+	echo "Control path: (S, G) operations - IPv4 overlay / IPv6 underlay"
+	echo "--------------------------------------------------------------"
+
+	sg_common $ns1 $grp $src $vtep_ip $all_zeros_grp
+}
+
+sg_ipv6_ipv6()
+{
+	local ns1=ns1_v6
+	local grp=ff0e::1
+	local src=2001:db8:100::1
+	local vtep_ip=2001:db8:1000::1
+	local all_zeros_grp=::
+
+	echo
+	echo "Control path: (S, G) operations - IPv6 overlay / IPv6 underlay"
+	echo "--------------------------------------------------------------"
+
+	sg_common $ns1 $grp $src $vtep_ip $all_zeros_grp
+}
+
+ipv4_grps_get()
+{
+	local max_grps=$1; shift
+	local i
+
+	for i in $(seq 0 $((max_grps - 1))); do
+		echo "239.1.1.$i"
+	done
+}
+
+ipv6_grps_get()
+{
+	local max_grps=$1; shift
+	local i
+
+	for i in $(seq 0 $((max_grps - 1))); do
+		echo "ff0e::$(printf %x $i)"
+	done
+}
+
+dump_common()
+{
+	local ns1=$1; shift
+	local local_addr=$1; shift
+	local remote_prefix=$1; shift
+	local fn=$1; shift
+	local max_vxlan_devs=2
+	local max_remotes=64
+	local max_grps=256
+	local num_entries
+	local batch_file
+	local grp
+	local i j
+
+	# The kernel maintains various markers for the MDB dump. Add a test for
+	# large scale MDB dump to make sure that all the configured entries are
+	# dumped and that the markers are used correctly.
+
+	# Create net devices.
+	for i in $(seq 1 $max_vxlan_devs); do
+		ip -n $ns1 link add name vx-test${i} up type vxlan \
+			local $local_addr dstport 4789 external vnifilter
+	done
+
+	# Create batch file with MDB entries.
+	batch_file=$(mktemp)
+	for i in $(seq 1 $max_vxlan_devs); do
+		for j in $(seq 1 $max_remotes); do
+			for grp in $($fn $max_grps); do
+				echo "mdb add dev vx-test${i} port vx-test${i} grp $grp permanent dst ${remote_prefix}${j}" >> $batch_file
+			done
+		done
+	done
+
+	# Program the batch file and check for expected number of entries.
+	bridge -n $ns1 -b $batch_file
+	for i in $(seq 1 $max_vxlan_devs); do
+		num_entries=$(bridge -n $ns1 mdb show dev vx-test${i} | grep "permanent" | wc -l)
+		[[ $num_entries -eq $((max_grps * max_remotes)) ]]
+		log_test $? 0 "Large scale dump - VXLAN device #$i"
+	done
+
+	rm -rf $batch_file
+}
+