selftests: mlxsw: q_in_q_veto: Disable IPv6 autogen on bridges

In a future patch, mlxsw will start adding RIFs to uppers of front panel
port netdevices, if they have an IP address.

The swp enslavement to the 802.1ad bridge is not allowed, because RIFs are
not allowed to be created for 802.1ad bridges, but the address indicates
one needs to be created. Thus the veto selftests fail already during the
port enslavement. Then the attempt to create a VLAN on top of the same
bridge is not vetoed, because the bridge is not related to mlxsw, and the
selftest fails.

Fix by disabling automatic IPv6 address generation for the bridges in this
selftest, thus exempting them from the mlxsw router attention.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

tools/testing/selftests/drivers/net/mlxsw/q_in_q_veto.sh

@@ -48,6 +48,7 @@ create_vlan_upper_on_top_of_bridge()
 
 	ip link add dev br0 type bridge vlan_filtering 1 \
 		vlan_protocol $bridge_proto vlan_default_pvid 0 mcast_snooping 0
+	ip link set dev br0 addrgenmode none
 
 	ip link set dev br0 up
 	ip link set dev $swp1 master br0
@@ -88,6 +89,7 @@ create_8021ad_vlan_upper_on_top_bridge_port()
 
 	ip link add dev br0 type bridge vlan_filtering 1 \
 		vlan_default_pvid 0 mcast_snooping 0
+	ip link set dev br0 addrgenmode none
 
 	ip link set dev $swp1 master br0
 	ip link set dev br0 up
@@ -155,6 +157,7 @@ create_vlan_upper_on_top_front_panel_enslaved_to_8021ad_bridge()
 
 	ip link add dev br0 type bridge vlan_filtering 1 \
 		vlan_protocol 802.1ad vlan_default_pvid 0 mcast_snooping 0
+	ip link set dev br0 addrgenmode none
 	ip link set dev br0 up
 
 	ip link set dev $swp1 master br0
@@ -177,6 +180,7 @@ create_vlan_upper_on_top_lag_enslaved_to_8021ad_bridge()
 
 	ip link add dev br0 type bridge vlan_filtering 1 \
 		vlan_protocol 802.1ad vlan_default_pvid 0 mcast_snooping 0
+	ip link set dev br0 addrgenmode none
 	ip link set dev br0 up
 
 	ip link add name bond1 type bond mode 802.3ad
@@ -203,6 +207,7 @@ enslave_front_panel_with_vlan_upper_to_8021ad_bridge()
 
 	ip link add dev br0 type bridge vlan_filtering 1 \
 		vlan_protocol 802.1ad vlan_default_pvid 0 mcast_snooping 0
+	ip link set dev br0 addrgenmode none
 	ip link set dev br0 up
 
 	ip link add name $swp1.100 link $swp1 type vlan id 100
@@ -225,6 +230,7 @@ enslave_lag_with_vlan_upper_to_8021ad_bridge()
 
 	ip link add dev br0 type bridge vlan_filtering 1 \
 		vlan_protocol 802.1ad vlan_default_pvid 0 mcast_snooping 0
+	ip link set dev br0 addrgenmode none
 	ip link set dev br0 up
 
 	ip link add name bond1 type bond mode 802.3ad
@@ -252,6 +258,7 @@ add_ip_address_to_8021ad_bridge()
 
 	ip link add dev br0 type bridge vlan_filtering 1 \
 		vlan_protocol 802.1ad vlan_default_pvid 0 mcast_snooping 0
+	ip link set dev br0 addrgenmode none
 
 	ip link set dev br0 up
 	ip link set dev $swp1 master br0
@@ -273,6 +280,7 @@ switch_bridge_protocol_from_8021q_to_8021ad()
 
 	ip link add dev br0 type bridge vlan_filtering 1 \
 		vlan_protocol 802.1ad vlan_default_pvid 0 mcast_snooping 0
+	ip link set dev br0 addrgenmode none
 
 	ip link set dev br0 up
 	ip link set dev $swp1 master br0