selftests: mlxsw: rif_bridge: Add a new selftest

This test verifies driver behavior with regards to creation of RIFs for a
bridge as LAGs are added or removed to/from it, and ports added or removed
to/from the LAG.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh b/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh
new file mode 100755 (executable)
index 0000000..b79542a
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/mlxsw/rif_bridge.sh
@@ -0,0 +1,183 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+lib_dir=$(dirname $0)/../../../net/forwarding
+
+ALL_TESTS="
+       bridge_rif_add
+       bridge_rif_nomaster
+       bridge_rif_remaster
+       bridge_rif_nomaster_addr
+       bridge_rif_nomaster_port
+       bridge_rif_remaster_port
+"
+
+NUM_NETIFS=2
+source $lib_dir/lib.sh
+source $lib_dir/devlink_lib.sh
+
+setup_prepare()
+{
+       swp1=${NETIFS[p1]}
+       swp2=${NETIFS[p2]}
+
+       team_create lag1 lacp
+       ip link set dev lag1 addrgenmode none
+       ip link set dev lag1 address $(mac_get $swp1)
+
+       team_create lag2 lacp
+       ip link set dev lag2 addrgenmode none
+       ip link set dev lag2 address $(mac_get $swp2)
+
+       ip link add name br1 type bridge vlan_filtering 1
+       ip link set dev br1 addrgenmode none
+       ip link set dev br1 address $(mac_get lag1)
+       ip link set dev br1 up
+
+       ip link set dev lag1 master br1
+
+       ip link set dev $swp1 master lag1
+       ip link set dev $swp1 up
+
+       ip link set dev $swp2 master lag2
+       ip link set dev $swp2 up
+}
+
+cleanup()
+{
+       pre_cleanup
+
+       ip link set dev $swp2 nomaster
+       ip link set dev $swp2 down
+
+       ip link set dev $swp1 nomaster
+       ip link set dev $swp1 down
+
+       ip link del dev lag2
+       ip link set dev lag1 nomaster
+       ip link del dev lag1
+
+       ip link del dev br1
+}
+
+bridge_rif_add()
+{
+       RET=0
+
+       local rifs_occ_t0=$(devlink_resource_occ_get rifs)
+       __addr_add_del br1 add 192.0.2.2/28
+       sleep 1
+       local rifs_occ_t1=$(devlink_resource_occ_get rifs)
+       local expected_rifs=$((rifs_occ_t0 + 1))
+
+       ((expected_rifs == rifs_occ_t1))
+       check_err $? "Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
+
+       log_test "Add RIF for bridge on address addition"
+}
+
+bridge_rif_nomaster()
+{
+       RET=0
+
+       local rifs_occ_t0=$(devlink_resource_occ_get rifs)
+       ip link set dev lag1 nomaster
+       sleep 1
+       local rifs_occ_t1=$(devlink_resource_occ_get rifs)
+       local expected_rifs=$((rifs_occ_t0 - 1))
+
+       ((expected_rifs == rifs_occ_t1))
+       check_err $? "Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
+
+       log_test "Drop RIF for bridge on LAG deslavement"
+}
+
+bridge_rif_remaster()
+{
+       RET=0
+
+       local rifs_occ_t0=$(devlink_resource_occ_get rifs)
+       ip link set dev lag1 master br1
+       sleep 1
+       local rifs_occ_t1=$(devlink_resource_occ_get rifs)
+       local expected_rifs=$((rifs_occ_t0 + 1))
+
+       ((expected_rifs == rifs_occ_t1))
+       check_err $? "Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
+
+       log_test "Add RIF for bridge on LAG reenslavement"
+}
+
+bridge_rif_nomaster_addr()
+{
+       local rifs_occ_t0=$(devlink_resource_occ_get rifs)
+
+       # Adding an address while the LAG is enslaved shouldn't generate a RIF.
+       __addr_add_del lag1 add 192.0.2.65/28
+       sleep 1
+       local rifs_occ_t1=$(devlink_resource_occ_get rifs)
+       local expected_rifs=$((rifs_occ_t0))
+
+       ((expected_rifs == rifs_occ_t1))
+       check_err $? "After adding IP: Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
+
+       # Removing the LAG from the bridge should drop RIF for the bridge (as
+       # tested in bridge_rif_lag_nomaster), but since the LAG now has an
+       # address, it should gain a RIF.
+       ip link set dev lag1 nomaster
+       sleep 1
+       local rifs_occ_t2=$(devlink_resource_occ_get rifs)
+       local expected_rifs=$((rifs_occ_t0))
+
+       ((expected_rifs == rifs_occ_t2))
+       check_err $? "After deslaving: Expected $expected_rifs RIFs, $rifs_occ_t2 are used"
+
+       log_test "Add RIF for LAG on deslavement from bridge"
+
+       __addr_add_del lag1 del 192.0.2.65/28
+       ip link set dev lag1 master br1
+       sleep 1
+}
+
+bridge_rif_nomaster_port()
+{
+       RET=0
+
+       local rifs_occ_t0=$(devlink_resource_occ_get rifs)
+       ip link set dev $swp1 nomaster
+       sleep 1
+       local rifs_occ_t1=$(devlink_resource_occ_get rifs)
+       local expected_rifs=$((rifs_occ_t0 - 1))
+
+       ((expected_rifs == rifs_occ_t1))
+       check_err $? "Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
+
+       log_test "Drop RIF for bridge on deslavement of port from LAG"
+}
+
+bridge_rif_remaster_port()
+{
+       RET=0
+
+       local rifs_occ_t0=$(devlink_resource_occ_get rifs)
+       ip link set dev $swp1 down
+       ip link set dev $swp1 master lag1
+       ip link set dev $swp1 up
+       setup_wait_dev $swp1
+       local rifs_occ_t1=$(devlink_resource_occ_get rifs)
+       local expected_rifs=$((rifs_occ_t0 + 1))
+
+       ((expected_rifs == rifs_occ_t1))
+       check_err $? "Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
+
+       log_test "Add RIF for bridge on reenslavement of port to LAG"
+}
+
+trap cleanup EXIT
+
+setup_prepare
+setup_wait
+
+tests_run
+
+exit $EXIT_STATUS