Merge branch 'fix-macvlan-over-alb-bond-support'

Hangbin Liu says:

====================
fix macvlan over alb bond support

Currently, the macvlan over alb bond is broken after commit
14af9963ba1e ("bonding: Support macvlans on top of tlb/rlb mode bonds").
Fix this and add relate tests.
====================

Link: https://lore.kernel.org/r/20230823071907.3027782-1-liuhangbin@gmail.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

7 files changed, 272 insertions, 127 deletions

diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index b9dbad3a8af8..fc5da5d7744d 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -660,10 +660,10 @@ static struct slave *rlb_arp_xmit(struct sk_buff *skb, struct bonding *bond)
 		return NULL;
 	arp = (struct arp_pkt *)skb_network_header(skb);
 
-	/* Don't modify or load balance ARPs that do not originate locally
-	 * (e.g.,arrive via a bridge).
+	/* Don't modify or load balance ARPs that do not originate
+	 * from the bond itself or a VLAN directly above the bond.
 	 */
-	if (!bond_slave_has_mac_rx(bond, arp->mac_src))
+	if (!bond_slave_has_mac_rcu(bond, arp->mac_src))
 		return NULL;
 
 	dev = ip_dev_find(dev_net(bond->dev), arp->ip_src);
diff --git a/include/net/bonding.h b/include/net/bonding.h
index 30ac427cf0c6..5b8b1b644a2d 100644
--- a/include/net/bonding.h
+++ b/include/net/bonding.h
@@ -722,23 +722,14 @@ static inline struct slave *bond_slave_has_mac(struct bonding *bond,
 }
 
 /* Caller must hold rcu_read_lock() for read */
-static inline bool bond_slave_has_mac_rx(struct bonding *bond, const u8 *mac)
+static inline bool bond_slave_has_mac_rcu(struct bonding *bond, const u8 *mac)
 {
 	struct list_head *iter;
 	struct slave *tmp;
-	struct netdev_hw_addr *ha;
 
 	bond_for_each_slave_rcu(bond, tmp, iter)
 		if (ether_addr_equal_64bits(mac, tmp->dev->dev_addr))
 			return true;
-
-	if (netdev_uc_empty(bond->dev))
-		return false;
-
-	netdev_for_each_uc_addr(ha, bond->dev)
-		if (ether_addr_equal_64bits(mac, ha->addr))
-			return true;
-
 	return false;
 }
 
diff --git a/tools/testing/selftests/drivers/net/bonding/Makefile b/tools/testing/selftests/drivers/net/bonding/Makefile
index 03f92d7aeb19..8a72bb7de70f 100644
--- a/tools/testing/selftests/drivers/net/bonding/Makefile
+++ b/tools/testing/selftests/drivers/net/bonding/Makefile
@@ -9,10 +9,12 @@ TEST_PROGS := \
 	mode-1-recovery-updelay.sh \
 	mode-2-recovery-updelay.sh \
 	bond_options.sh \
-	bond-eth-type-change.sh
+	bond-eth-type-change.sh \
+	bond_macvlan.sh
 
 TEST_FILES := \
 	lag_lib.sh \
+	bond_topo_2d1c.sh \
 	bond_topo_3d1c.sh \
 	net_forwarding_lib.sh
 
diff --git a/tools/testing/selftests/drivers/net/bonding/bond_macvlan.sh b/tools/testing/selftests/drivers/net/bonding/bond_macvlan.sh
new file mode 100755
index 000000000000..b609fb6231f4
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/bonding/bond_macvlan.sh
@@ -0,0 +1,99 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Test macvlan over balance-alb
+
+lib_dir=$(dirname "$0")
+source ${lib_dir}/bond_topo_2d1c.sh
+
+m1_ns="m1-$(mktemp -u XXXXXX)"
+m2_ns="m1-$(mktemp -u XXXXXX)"
+m1_ip4="192.0.2.11"
+m1_ip6="2001:db8::11"
+m2_ip4="192.0.2.12"
+m2_ip6="2001:db8::12"
+
+cleanup()
+{
+	ip -n ${m1_ns} link del macv0
+	ip netns del ${m1_ns}
+	ip -n ${m2_ns} link del macv0
+	ip netns del ${m2_ns}
+
+	client_destroy
+	server_destroy
+	gateway_destroy
+}
+
+check_connection()
+{
+	local ns=${1}
+	local target=${2}
+	local message=${3:-"macvlan_over_bond"}
+	RET=0
+
+
+	ip netns exec ${ns} ping ${target} -c 4 -i 0.1 &>/dev/null
+	check_err $? "ping failed"
+	log_test "$mode: $message"
+}
+
+macvlan_over_bond()
+{
+	local param="$1"
+	RET=0
+
+	# setup new bond mode
+	bond_reset "${param}"
+
+	ip -n ${s_ns} link add link bond0 name macv0 type macvlan mode bridge
+	ip -n ${s_ns} link set macv0 netns ${m1_ns}
+	ip -n ${m1_ns} link set dev macv0 up
+	ip -n ${m1_ns} addr add ${m1_ip4}/24 dev macv0
+	ip -n ${m1_ns} addr add ${m1_ip6}/24 dev macv0
+
+	ip -n ${s_ns} link add link bond0 name macv0 type macvlan mode bridge
+	ip -n ${s_ns} link set macv0 netns ${m2_ns}
+	ip -n ${m2_ns} link set dev macv0 up
+	ip -n ${m2_ns} addr add ${m2_ip4}/24 dev macv0
+	ip -n ${m2_ns} addr add ${m2_ip6}/24 dev macv0
+
+	sleep 2
+
+	check_connection "${c_ns}" "${s_ip4}" "IPv4: client->server"
+	check_connection "${c_ns}" "${s_ip6}" "IPv6: client->server"
+	check_connection "${c_ns}" "${m1_ip4}" "IPv4: client->macvlan_1"
+	check_connection "${c_ns}" "${m1_ip6}" "IPv6: client->macvlan_1"
+	check_connection "${c_ns}" "${m2_ip4}" "IPv4: client->macvlan_2"
+	check_connection "${c_ns}" "${m2_ip6}" "IPv6: client->macvlan_2"
+	check_connection "${m1_ns}" "${m2_ip4}" "IPv4: macvlan_1->macvlan_2"
+	check_connection "${m1_ns}" "${m2_ip6}" "IPv6: macvlan_1->macvlan_2"
+
+
+	sleep 5
+
+	check_connection "${s_ns}" "${c_ip4}" "IPv4: server->client"
+	check_connection "${s_ns}" "${c_ip6}" "IPv6: server->client"
+	check_connection "${m1_ns}" "${c_ip4}" "IPv4: macvlan_1->client"
+	check_connection "${m1_ns}" "${c_ip6}" "IPv6: macvlan_1->client"
+	check_connection "${m2_ns}" "${c_ip4}" "IPv4: macvlan_2->client"
+	check_connection "${m2_ns}" "${c_ip6}" "IPv6: macvlan_2->client"
+	check_connection "${m2_ns}" "${m1_ip4}" "IPv4: macvlan_2->macvlan_2"
+	check_connection "${m2_ns}" "${m1_ip6}" "IPv6: macvlan_2->macvlan_2"
+
+	ip -n ${c_ns} neigh flush dev eth0
+}
+
+trap cleanup EXIT
+
+setup_prepare
+ip netns add ${m1_ns}
+ip netns add ${m2_ns}
+
+modes="active-backup balance-tlb balance-alb"
+
+for mode in $modes; do
+	macvlan_over_bond "mode $mode"
+done
+
+exit $EXIT_STATUS
diff --git a/tools/testing/selftests/drivers/net/bonding/bond_options.sh b/tools/testing/selftests/drivers/net/bonding/bond_options.sh
index 607ba5c38977..c54d1697f439 100755
--- a/tools/testing/selftests/drivers/net/bonding/bond_options.sh
+++ b/tools/testing/selftests/drivers/net/bonding/bond_options.sh
@@ -9,10 +9,7 @@ ALL_TESTS="
 	num_grat_arp
 "
 
-REQUIRE_MZ=no
-NUM_NETIFS=0
 lib_dir=$(dirname "$0")
-source ${lib_dir}/net_forwarding_lib.sh
 source ${lib_dir}/bond_topo_3d1c.sh
 
 skip_prio()
diff --git a/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh b/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh
new file mode 100644
index 000000000000..a509ef949dcf
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/bonding/bond_topo_2d1c.sh
@@ -0,0 +1,158 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# Topology for Bond mode 1,5,6 testing
+#
+#  +-------------------------+
+#  |          bond0          |  Server
+#  |            +            |  192.0.2.1/24
+#  |      eth0  |  eth1      |  2001:db8::1/24
+#  |        +---+---+        |
+#  |        |       |        |
+#  +-------------------------+
+#           |       |
+#  +-------------------------+
+#  |        |       |        |
+#  |    +---+-------+---+    |  Gateway
+#  |    |      br0      |    |  192.0.2.254/24
+#  |    +-------+-------+    |  2001:db8::254/24
+#  |            |            |
+#  +-------------------------+
+#               |
+#  +-------------------------+
+#  |            |            |  Client
+#  |            +            |  192.0.2.10/24
+#  |          eth0           |  2001:db8::10/24
+#  +-------------------------+
+
+REQUIRE_MZ=no
+NUM_NETIFS=0
+lib_dir=$(dirname "$0")
+source ${lib_dir}/net_forwarding_lib.sh
+
+s_ns="s-$(mktemp -u XXXXXX)"
+c_ns="c-$(mktemp -u XXXXXX)"
+g_ns="g-$(mktemp -u XXXXXX)"
+s_ip4="192.0.2.1"
+c_ip4="192.0.2.10"
+g_ip4="192.0.2.254"
+s_ip6="2001:db8::1"
+c_ip6="2001:db8::10"
+g_ip6="2001:db8::254"
+
+gateway_create()
+{
+	ip netns add ${g_ns}
+	ip -n ${g_ns} link add br0 type bridge
+	ip -n ${g_ns} link set br0 up
+	ip -n ${g_ns} addr add ${g_ip4}/24 dev br0
+	ip -n ${g_ns} addr add ${g_ip6}/24 dev br0
+}
+
+gateway_destroy()
+{
+	ip -n ${g_ns} link del br0
+	ip netns del ${g_ns}
+}
+
+server_create()
+{
+	ip netns add ${s_ns}
+	ip -n ${s_ns} link add bond0 type bond mode active-backup miimon 100
+
+	for i in $(seq 0 1); do
+		ip -n ${s_ns} link add eth${i} type veth peer name s${i} netns ${g_ns}
+
+		ip -n ${g_ns} link set s${i} up
+		ip -n ${g_ns} link set s${i} master br0
+		ip -n ${s_ns} link set eth${i} master bond0
+
+		tc -n ${g_ns} qdisc add dev s${i} clsact
+	done
+
+	ip -n ${s_ns} link set bond0 up
+	ip -n ${s_ns} addr add ${s_ip4}/24 dev bond0
+	ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0
+	sleep 2
+}
+
+# Reset bond with new mode and options
+bond_reset()
+{
+	# Count the eth link number in real-time as this function
+	# maybe called from other topologies.
+	local link_num=$(ip -n ${s_ns} -br link show | grep -c "^eth")
+	local param="$1"
+	link_num=$((link_num -1))
+
+	ip -n ${s_ns} link set bond0 down
+	ip -n ${s_ns} link del bond0
+
+	ip -n ${s_ns} link add bond0 type bond $param
+	for i in $(seq 0 ${link_num}); do
+		ip -n ${s_ns} link set eth$i master bond0
+	done
+
+	ip -n ${s_ns} link set bond0 up
+	ip -n ${s_ns} addr add ${s_ip4}/24 dev bond0
+	ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0
+	sleep 2
+}
+
+server_destroy()
+{
+	# Count the eth link number in real-time as this function
+	# maybe called from other topologies.
+	local link_num=$(ip -n ${s_ns} -br link show | grep -c "^eth")
+	link_num=$((link_num -1))
+	for i in $(seq 0 ${link_num}); do
+		ip -n ${s_ns} link del eth${i}
+	done
+	ip netns del ${s_ns}
+}
+
+client_create()
+{
+	ip netns add ${c_ns}
+	ip -n ${c_ns} link add eth0 type veth peer name c0 netns ${g_ns}
+
+	ip -n ${g_ns} link set c0 up
+	ip -n ${g_ns} link set c0 master br0
+
+	ip -n ${c_ns} link set eth0 up
+	ip -n ${c_ns} addr add ${c_ip4}/24 dev eth0
+	ip -n ${c_ns} addr add ${c_ip6}/24 dev eth0
+}
+
+client_destroy()
+{
+	ip -n ${c_ns} link del eth0
+	ip netns del ${c_ns}
+}
+
+setup_prepare()
+{
+	gateway_create
+	server_create
+	client_create
+}
+
+cleanup()
+{
+	pre_cleanup
+
+	client_destroy
+	server_destroy
+	gateway_destroy
+}
+
+bond_check_connection()
+{
+	local msg=${1:-"check connection"}
+
+	sleep 2
+	ip netns exec ${s_ns} ping ${c_ip4} -c5 -i 0.1 &>/dev/null
+	check_err $? "${msg}: ping failed"
+	ip netns exec ${s_ns} ping6 ${c_ip6} -c5 -i 0.1 &>/dev/null
+	check_err $? "${msg}: ping6 failed"
+}
diff --git a/tools/testing/selftests/drivers/net/bonding/bond_topo_3d1c.sh b/tools/testing/selftests/drivers/net/bonding/bond_topo_3d1c.sh
index 69ab99a56043..3a1333d9a85b 100644
--- a/tools/testing/selftests/drivers/net/bonding/bond_topo_3d1c.sh
+++ b/tools/testing/selftests/drivers/net/bonding/bond_topo_3d1c.sh
@@ -25,121 +25,19 @@
 #  |                eth0                 |  2001:db8::10/24
 #  +-------------------------------------+
 
-s_ns="s-$(mktemp -u XXXXXX)"
-c_ns="c-$(mktemp -u XXXXXX)"
-g_ns="g-$(mktemp -u XXXXXX)"
-s_ip4="192.0.2.1"
-c_ip4="192.0.2.10"
-g_ip4="192.0.2.254"
-s_ip6="2001:db8::1"
-c_ip6="2001:db8::10"
-g_ip6="2001:db8::254"
-
-gateway_create()
-{
-	ip netns add ${g_ns}
-	ip -n ${g_ns} link add br0 type bridge
-	ip -n ${g_ns} link set br0 up
-	ip -n ${g_ns} addr add ${g_ip4}/24 dev br0
-	ip -n ${g_ns} addr add ${g_ip6}/24 dev br0
-}
-
-gateway_destroy()
-{
-	ip -n ${g_ns} link del br0
-	ip netns del ${g_ns}
-}
-
-server_create()
-{
-	ip netns add ${s_ns}
-	ip -n ${s_ns} link add bond0 type bond mode active-backup miimon 100
-
-	for i in $(seq 0 2); do
-		ip -n ${s_ns} link add eth${i} type veth peer name s${i} netns ${g_ns}
-
-		ip -n ${g_ns} link set s${i} up
-		ip -n ${g_ns} link set s${i} master br0
-		ip -n ${s_ns} link set eth${i} master bond0
-
-		tc -n ${g_ns} qdisc add dev s${i} clsact
-	done
-
-	ip -n ${s_ns} link set bond0 up
-	ip -n ${s_ns} addr add ${s_ip4}/24 dev bond0
-	ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0
-	sleep 2
-}
-
-# Reset bond with new mode and options
-bond_reset()
-{
-	local param="$1"
-
-	ip -n ${s_ns} link set bond0 down
-	ip -n ${s_ns} link del bond0
-
-	ip -n ${s_ns} link add bond0 type bond $param
-	for i in $(seq 0 2); do
-		ip -n ${s_ns} link set eth$i master bond0
-	done
-
-	ip -n ${s_ns} link set bond0 up
-	ip -n ${s_ns} addr add ${s_ip4}/24 dev bond0
-	ip -n ${s_ns} addr add ${s_ip6}/24 dev bond0
-	sleep 2
-}
-
-server_destroy()
-{
-	for i in $(seq 0 2); do
-		ip -n ${s_ns} link del eth${i}
-	done
-	ip netns del ${s_ns}
-}
-
-client_create()
-{
-	ip netns add ${c_ns}
-	ip -n ${c_ns} link add eth0 type veth peer name c0 netns ${g_ns}
-
-	ip -n ${g_ns} link set c0 up
-	ip -n ${g_ns} link set c0 master br0
-
-	ip -n ${c_ns} link set eth0 up
-	ip -n ${c_ns} addr add ${c_ip4}/24 dev eth0
-	ip -n ${c_ns} addr add ${c_ip6}/24 dev eth0
-}
-
-client_destroy()
-{
-	ip -n ${c_ns} link del eth0
-	ip netns del ${c_ns}
-}
+source bond_topo_2d1c.sh
 
 setup_prepare()
 {
 	gateway_create
 	server_create
 	client_create
-}
-
-cleanup()
-{
-	pre_cleanup
-
-	client_destroy
-	server_destroy
-	gateway_destroy
-}
-
-bond_check_connection()
-{
-	local msg=${1:-"check connection"}
 
-	sleep 2
-	ip netns exec ${s_ns} ping ${c_ip4} -c5 -i 0.1 &>/dev/null
-	check_err $? "${msg}: ping failed"
-	ip netns exec ${s_ns} ping6 ${c_ip6} -c5 -i 0.1 &>/dev/null
-	check_err $? "${msg}: ping6 failed"
+	# Add the extra device as we use 3 down links for bond0
+	local i=2
+	ip -n ${s_ns} link add eth${i} type veth peer name s${i} netns ${g_ns}
+	ip -n ${g_ns} link set s${i} up
+	ip -n ${g_ns} link set s${i} master br0
+	ip -n ${s_ns} link set eth${i} master bond0
+	tc -n ${g_ns} qdisc add dev s${i} clsact
 }