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selftests: mlxsw: Add ingress RIF configuration test for 802.1Q bridge
Before layer 2 forwarding, the device classifies an incoming packet to a FID. After classification, the FID is known, but also all the attributes of the FID, such as the router interface (RIF) via which a packet that needs to be routed will ingress the router block. For VLAN-aware bridges (802.1Q), the FID classification is done according to VID. When a RIF is added on top of a FID, the existing VID->FID mapping should be updated by the software with the new RIF. We never map multiple VLANs to the same FID using VID->FID, so we cannot create VID->FID for FID which already has a RIF using 802.1Q. Anyway, verify that packets can be routed via port which is added after the FID already has a RIF. Add a test to verify that packets can be routed after VID->FID classification, regardless of the order of the configuration. # ./ingress_rif_conf_1q.sh TEST: Add RIF for existing VID->FID mapping [ OK ] TEST: Add port to VID->FID mapping for FID with a RIF [ OK ] Signed-off-by: Amit Cohen <amcohen@nvidia.com> Reviewed-by: Ido Schimmel <idosch@nvidia.com> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Amit Cohen
Jakub Kicinski
parent
2cd87cea78
commit
3a5ddc8868
264
tools/testing/selftests/drivers/net/mlxsw/ingress_rif_conf_1q.sh
Executable file
264
tools/testing/selftests/drivers/net/mlxsw/ingress_rif_conf_1q.sh
Executable file
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Test routing over bridge and verify that the order of configuration does not
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# impact switch behavior. Verify that RIF is added correctly for existing
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# mapping and that packets can be routed via port which is added after the FID
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# already has a RIF.
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# +-------------------+ +--------------------+
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# | H1 | | H2 |
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# | | | |
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# | $h1.10 + | | + $h2.10 |
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# | 192.0.2.1/28 | | | | 192.0.2.3/28 |
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# | | | | | |
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# | $h1 + | | + $h2 |
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# +----------------|--+ +--|-----------------+
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# | |
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# +----------------|-------------------------|-----------------+
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# | SW | | |
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# | +--------------|-------------------------|---------------+ |
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# | | $swp1 + + $swp2 | |
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# | | | |
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# | | br0 | |
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# | +--------------------------------------------------------+ |
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# | | |
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# | br0.10 |
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# | 192.0.2.2/28 |
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# | |
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# | |
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# | $swp3 + |
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# | 192.0.2.17/28 | |
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# +----------------|-------------------------------------------+
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# |
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# +----------------|--+
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# | $h3 + |
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# | 192.0.2.18/28 |
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# | |
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# | H3 |
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# +-------------------+
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lib_dir=$(dirname $0)/../../../net/forwarding
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ALL_TESTS="
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vid_map_rif
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rif_vid_map
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"
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NUM_NETIFS=6
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source $lib_dir/lib.sh
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source $lib_dir/tc_common.sh
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source $lib_dir/devlink_lib.sh
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h1_create()
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{
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simple_if_init $h1
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vlan_create $h1 10 v$h1 192.0.2.1/28
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ip route add 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
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}
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h1_destroy()
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{
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ip route del 192.0.2.16/28 vrf v$h1 nexthop via 192.0.2.2
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vlan_destroy $h1 10
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simple_if_fini $h1
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}
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h2_create()
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{
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simple_if_init $h2
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vlan_create $h2 10 v$h2 192.0.2.3/28
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}
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h2_destroy()
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{
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vlan_destroy $h2 10
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simple_if_fini $h2
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}
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h3_create()
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{
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simple_if_init $h3 192.0.2.18/28
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ip route add 192.0.2.0/28 vrf v$h3 nexthop via 192.0.2.17
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}
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h3_destroy()
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{
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ip route del 192.0.2.0/28 vrf v$h3 nexthop via 192.0.2.17
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simple_if_fini $h3 192.0.2.18/28
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}
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switch_create()
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{
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ip link set dev $swp1 up
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ip link add dev br0 type bridge vlan_filtering 1 mcast_snooping 0
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# By default, a link-local address is generated when netdevice becomes
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# up. Adding an address to the bridge will cause creating a RIF for it.
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# Prevent generating link-local address to be able to control when the
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# RIF is added.
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sysctl_set net.ipv6.conf.br0.addr_gen_mode 1
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ip link set dev br0 up
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ip link set dev $swp2 up
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ip link set dev $swp2 master br0
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bridge vlan add vid 10 dev $swp2
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ip link set dev $swp3 up
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__addr_add_del $swp3 add 192.0.2.17/28
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tc qdisc add dev $swp3 clsact
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# Replace neighbor to avoid 1 packet which is forwarded in software due
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# to "unresolved neigh".
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ip neigh replace dev $swp3 192.0.2.18 lladdr $(mac_get $h3)
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}
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switch_destroy()
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{
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tc qdisc del dev $swp3 clsact
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__addr_add_del $swp3 del 192.0.2.17/28
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ip link set dev $swp3 down
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bridge vlan del vid 10 dev $swp2
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ip link set dev $swp2 nomaster
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ip link set dev $swp2 down
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ip link set dev br0 down
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sysctl_restore net.ipv6.conf.br0.addr_gen_mode
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ip link del dev br0
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ip link set dev $swp1 down
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}
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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swp1=${NETIFS[p2]}
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swp2=${NETIFS[p3]}
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h2=${NETIFS[p4]}
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swp3=${NETIFS[p5]}
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h3=${NETIFS[p6]}
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vrf_prepare
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forwarding_enable
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h1_create
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h2_create
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h3_create
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switch_create
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}
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cleanup()
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{
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pre_cleanup
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switch_destroy
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h3_destroy
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h2_destroy
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h1_destroy
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forwarding_restore
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vrf_cleanup
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}
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bridge_rif_add()
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{
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rifs_occ_t0=$(devlink_resource_occ_get rifs)
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vlan_create br0 10 "" 192.0.2.2/28
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rifs_occ_t1=$(devlink_resource_occ_get rifs)
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expected_rifs=$((rifs_occ_t0 + 1))
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[[ $expected_rifs -eq $rifs_occ_t1 ]]
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check_err $? "Expected $expected_rifs RIFs, $rifs_occ_t1 are used"
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sleep 1
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}
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bridge_rif_del()
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{
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vlan_destroy br0 10
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}
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vid_map_rif()
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{
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RET=0
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# First add VID->FID for vlan 10, then add a RIF and verify that
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# packets can be routed via the existing mapping.
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bridge vlan add vid 10 dev br0 self
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ip link set dev $swp1 master br0
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bridge vlan add vid 10 dev $swp1
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bridge_rif_add
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tc filter add dev $swp3 egress protocol ip pref 1 handle 101 \
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flower skip_sw dst_ip 192.0.2.18 action pass
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ping_do $h1.10 192.0.2.18
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check_err $? "Ping failed"
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tc_check_at_least_x_packets "dev $swp3 egress" 101 10
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check_err $? "Packets were not routed in hardware"
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log_test "Add RIF for existing VID->FID mapping"
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tc filter del dev $swp3 egress
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bridge_rif_del
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bridge vlan del vid 10 dev $swp1
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ip link set dev $swp1 nomaster
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bridge vlan del vid 10 dev br0 self
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}
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rif_vid_map()
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{
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RET=0
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# Using 802.1Q, there is only one VID->FID map for each VID. That means
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# that we cannot really check adding a new map for existing FID with a
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# RIF. Verify that packets can be routed via port which is added after
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# the FID already has a RIF, although in practice there is no new
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# mapping in the hardware.
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bridge vlan add vid 10 dev br0 self
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bridge_rif_add
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ip link set dev $swp1 master br0
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bridge vlan add vid 10 dev $swp1
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tc filter add dev $swp3 egress protocol ip pref 1 handle 101 \
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flower skip_sw dst_ip 192.0.2.18 action pass
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ping_do $h1.10 192.0.2.18
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check_err $? "Ping failed"
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tc_check_at_least_x_packets "dev $swp3 egress" 101 10
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check_err $? "Packets were not routed in hardware"
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log_test "Add port to VID->FID mapping for FID with a RIF"
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tc filter del dev $swp3 egress
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bridge vlan del vid 10 dev $swp1
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ip link set dev $swp1 nomaster
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bridge_rif_del
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bridge vlan del vid 10 dev br0 self
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}
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trap cleanup EXIT
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setup_prepare
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setup_wait
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tests_run
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exit $EXIT_STATUS
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