tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
selftests: forwarding: Add IPv6 GRE flat tests
Add tests that check IPv6-in-IPv6, IPv4-in-IPv6 and MTU change of GRE
tunnel. The tests use flat model - overlay and underlay share the same VRF.
These tests can be run with TC_FLAG=skip_sw, so then they will verify
that packets go through hardware as part of enacp and decap phases.
Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
authored by
Amit Cohen
and committed by
David S. Miller
7df29960
c08d2272
+465
+65
tools/testing/selftests/net/forwarding/ip6gre_flat.sh
+65
tools/testing/selftests/net/forwarding/ip6gre_flat.sh
···
1
+
#!/bin/bash
2
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# SPDX-License-Identifier: GPL-2.0
3
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4
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# Test IP-in-IP GRE tunnel without key.
5
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# This test uses flat topology for IP tunneling tests. See ip6gre_lib.sh for
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# more details.
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8
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ALL_TESTS="
9
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gre_flat
10
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gre_mtu_change
11
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"
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+
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NUM_NETIFS=6
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source lib.sh
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source ip6gre_lib.sh
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+
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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ol1=${NETIFS[p2]}
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+
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ul1=${NETIFS[p3]}
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ul2=${NETIFS[p4]}
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+
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ol2=${NETIFS[p5]}
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h2=${NETIFS[p6]}
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+
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forwarding_enable
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vrf_prepare
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h1_create
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h2_create
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sw1_flat_create $ol1 $ul1
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sw2_flat_create $ol2 $ul2
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}
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+
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gre_flat()
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{
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test_traffic_ip4ip6 "GRE flat IPv4-in-IPv6"
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test_traffic_ip6ip6 "GRE flat IPv6-in-IPv6"
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}
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+
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gre_mtu_change()
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{
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test_mtu_change
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}
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cleanup()
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{
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pre_cleanup
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sw2_flat_destroy $ol2 $ul2
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sw1_flat_destroy $ol1 $ul1
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h2_destroy
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h1_destroy
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vrf_cleanup
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forwarding_restore
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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 $EXIT_STATUS
+65
tools/testing/selftests/net/forwarding/ip6gre_flat_key.sh
+65
tools/testing/selftests/net/forwarding/ip6gre_flat_key.sh
···
1
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# Test IP-in-IP GRE tunnel with key.
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# This test uses flat topology for IP tunneling tests. See ip6gre_lib.sh for
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# more details.
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ALL_TESTS="
9
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gre_flat
10
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gre_mtu_change
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"
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NUM_NETIFS=6
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source lib.sh
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source ip6gre_lib.sh
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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ol1=${NETIFS[p2]}
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+
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ul1=${NETIFS[p3]}
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ul2=${NETIFS[p4]}
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+
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ol2=${NETIFS[p5]}
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h2=${NETIFS[p6]}
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+
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forwarding_enable
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vrf_prepare
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h1_create
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h2_create
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sw1_flat_create $ol1 $ul1 key 233
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sw2_flat_create $ol2 $ul2 key 233
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}
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gre_flat()
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{
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test_traffic_ip4ip6 "GRE flat IPv4-in-IPv6 with key"
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test_traffic_ip6ip6 "GRE flat IPv6-in-IPv6 with key"
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}
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gre_mtu_change()
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{
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test_mtu_change
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}
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cleanup()
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{
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pre_cleanup
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+
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sw2_flat_destroy $ol2 $ul2
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sw1_flat_destroy $ol1 $ul1
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h2_destroy
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h1_destroy
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vrf_cleanup
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forwarding_restore
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}
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+
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trap cleanup EXIT
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+
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setup_prepare
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setup_wait
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tests_run
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+
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exit $EXIT_STATUS
+65
tools/testing/selftests/net/forwarding/ip6gre_flat_keys.sh
+65
tools/testing/selftests/net/forwarding/ip6gre_flat_keys.sh
···
1
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#!/bin/bash
2
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# SPDX-License-Identifier: GPL-2.0
3
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4
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# Test IP-in-IP GRE tunnel with keys.
5
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# This test uses flat topology for IP tunneling tests. See ip6gre_lib.sh for
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# more details.
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8
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ALL_TESTS="
9
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gre_flat
10
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gre_mtu_change
11
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"
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+
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NUM_NETIFS=6
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source lib.sh
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source ip6gre_lib.sh
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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ol1=${NETIFS[p2]}
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ul1=${NETIFS[p3]}
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ul2=${NETIFS[p4]}
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+
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ol2=${NETIFS[p5]}
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h2=${NETIFS[p6]}
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+
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forwarding_enable
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vrf_prepare
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h1_create
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h2_create
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sw1_flat_create $ol1 $ul1 ikey 111 okey 222
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sw2_flat_create $ol2 $ul2 ikey 222 okey 111
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}
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gre_flat()
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{
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test_traffic_ip4ip6 "GRE flat IPv4-in-IPv6 with ikey/okey"
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test_traffic_ip6ip6 "GRE flat IPv6-in-IPv6 with ikey/okey"
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}
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gre_mtu_change()
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{
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test_mtu_change gre
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}
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cleanup()
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{
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pre_cleanup
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+
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sw2_flat_destroy $ol2 $ul2
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sw1_flat_destroy $ol1 $ul1
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h2_destroy
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h1_destroy
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vrf_cleanup
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forwarding_restore
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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
+270
tools/testing/selftests/net/forwarding/ip6gre_lib.sh
+270
tools/testing/selftests/net/forwarding/ip6gre_lib.sh
···
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# SPDX-License-Identifier: GPL-2.0
2
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#!/bin/bash
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4
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# Handles creation and destruction of IP-in-IP or GRE tunnels over the given
5
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# topology.
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#
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# Flat Model:
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# Overlay and underlay share the same VRF.
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# SW1 uses default VRF so tunnel has no bound dev.
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# SW2 uses non-default VRF tunnel has a bound dev.
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# +--------------------------------+
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# | H1 |
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# | $h1 + |
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# | 198.51.100.1/24 | |
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# | 2001:db8:1::1/64 | |
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# +-------------------------|------+
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# |
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# +-------------------------|-------------------+
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# | SW1 | |
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# | $ol1 + |
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# | 198.51.100.2/24 |
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# | 2001:db8:1::2/64 |
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# | |
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# | + g1a (ip6gre) |
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# | loc=2001:db8:3::1 |
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# | rem=2001:db8:3::2 --. |
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# | tos=inherit | |
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# | . |
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# | .--------------------- |
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# | | |
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# | v |
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# | + $ul1.111 (vlan) |
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# | | 2001:db8:10::1/64 |
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# | \ |
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# | \____________ |
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# | | |
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# | VRF default + $ul1 |
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# +---------------------|-----------------------+
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# |
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# +---------------------|-----------------------+
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# | SW2 | |
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# | $ul2 + |
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# | ___________| |
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# | / |
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# | / |
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# | + $ul2.111 (vlan) |
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# | ^ 2001:db8:10::2/64 |
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# | | |
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# | | |
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# | '----------------------. |
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# | + g2a (ip6gre) | |
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# | loc=2001:db8:3::2 | |
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# | rem=2001:db8:3::1 --' |
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# | tos=inherit |
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# | |
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# | + $ol2 |
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# | | 203.0.113.2/24 |
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# | VRF v$ol2 | 2001:db8:2::2/64 |
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# +---------------------|-----------------------+
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# +---------------------|----------+
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# | H2 | |
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# | $h2 + |
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# | 203.0.113.1/24 |
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# | 2001:db8:2::1/64 |
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# +--------------------------------+
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source lib.sh
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source tc_common.sh
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70
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h1_create()
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{
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simple_if_init $h1 198.51.100.1/24 2001:db8:1::1/64
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ip route add vrf v$h1 203.0.113.0/24 via 198.51.100.2
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ip -6 route add vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2
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}
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h1_destroy()
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{
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ip -6 route del vrf v$h1 2001:db8:2::/64 via 2001:db8:1::2
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ip route del vrf v$h1 203.0.113.0/24 via 198.51.100.2
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simple_if_fini $h1 198.51.100.1/24 2001:db8:1::1/64
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}
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h2_create()
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{
86
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simple_if_init $h2 203.0.113.1/24 2001:db8:2::1/64
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ip route add vrf v$h2 198.51.100.0/24 via 203.0.113.2
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ip -6 route add vrf v$h2 2001:db8:1::/64 via 2001:db8:2::2
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}
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h2_destroy()
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{
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ip -6 route del vrf v$h2 2001:db8:1::/64 via 2001:db8:2::2
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ip route del vrf v$h2 198.51.100.0/24 via 203.0.113.2
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simple_if_fini $h2 203.0.113.1/24 2001:db8:2::1/64
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}
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sw1_flat_create()
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{
100
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local ol1=$1; shift
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local ul1=$1; shift
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ip link set dev $ol1 up
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__addr_add_del $ol1 add 198.51.100.2/24 2001:db8:1::2/64
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ip link set dev $ul1 up
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vlan_create $ul1 111 "" 2001:db8:10::1/64
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tunnel_create g1a ip6gre 2001:db8:3::1 2001:db8:3::2 tos inherit \
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ttl inherit "$@"
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ip link set dev g1a up
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__addr_add_del g1a add "2001:db8:3::1/128"
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ip -6 route add 2001:db8:3::2/128 via 2001:db8:10::2
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ip route add 203.0.113.0/24 dev g1a
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ip -6 route add 2001:db8:2::/64 dev g1a
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}
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sw1_flat_destroy()
120
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{
121
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local ol1=$1; shift
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local ul1=$1; shift
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ip -6 route del 2001:db8:2::/64
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ip route del 203.0.113.0/24
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ip -6 route del 2001:db8:3::2/128 via 2001:db8:10::2
127
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128
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__simple_if_fini g1a 2001:db8:3::1/128
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tunnel_destroy g1a
130
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131
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vlan_destroy $ul1 111
132
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__simple_if_fini $ul1
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__simple_if_fini $ol1 198.51.100.2/24 2001:db8:1::2/64
134
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}
135
+
136
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sw2_flat_create()
137
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{
138
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local ol2=$1; shift
139
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local ul2=$1; shift
140
+
141
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simple_if_init $ol2 203.0.113.2/24 2001:db8:2::2/64
142
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__simple_if_init $ul2 v$ol2
143
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vlan_create $ul2 111 v$ol2 2001:db8:10::2/64
144
+
145
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tunnel_create g2a ip6gre 2001:db8:3::2 2001:db8:3::1 tos inherit \
146
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ttl inherit dev v$ol2 "$@"
147
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__simple_if_init g2a v$ol2 2001:db8:3::2/128
148
+
149
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# Replace neighbor to avoid 1 dropped packet due to "unresolved neigh"
150
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ip neigh replace dev $ol2 203.0.113.1 lladdr $(mac_get $h2)
151
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ip -6 neigh replace dev $ol2 2001:db8:2::1 lladdr $(mac_get $h2)
152
+
153
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ip -6 route add vrf v$ol2 2001:db8:3::1/128 via 2001:db8:10::1
154
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ip route add vrf v$ol2 198.51.100.0/24 dev g2a
155
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ip -6 route add vrf v$ol2 2001:db8:1::/64 dev g2a
156
+
}
157
+
158
+
sw2_flat_destroy()
159
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{
160
+
local ol2=$1; shift
161
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local ul2=$1; shift
162
+
163
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ip -6 route del vrf v$ol2 2001:db8:2::/64
164
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ip route del vrf v$ol2 198.51.100.0/24
165
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ip -6 route del vrf v$ol2 2001:db8:3::1/128 via 2001:db8:10::1
166
+
167
+
__simple_if_fini g2a 2001:db8:3::2/128
168
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tunnel_destroy g2a
169
+
170
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vlan_destroy $ul2 111
171
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__simple_if_fini $ul2
172
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simple_if_fini $ol2 203.0.113.2/24 2001:db8:2::2/64
173
+
}
174
+
175
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test_traffic_ip4ip6()
176
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{
177
+
RET=0
178
+
179
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h1mac=$(mac_get $h1)
180
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ol1mac=$(mac_get $ol1)
181
+
182
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tc qdisc add dev $ul1 clsact
183
+
tc filter add dev $ul1 egress proto all pref 1 handle 101 \
184
+
flower $TC_FLAG action pass
185
+
186
+
tc qdisc add dev $ol2 clsact
187
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tc filter add dev $ol2 egress protocol ipv4 pref 1 handle 101 \
188
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flower $TC_FLAG dst_ip 203.0.113.1 action pass
189
+
190
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$MZ $h1 -c 1000 -p 64 -a $h1mac -b $ol1mac -A 198.51.100.1 \
191
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-B 203.0.113.1 -t ip -q -d 1msec
192
+
193
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# Check ports after encap and after decap.
194
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tc_check_at_least_x_packets "dev $ul1 egress" 101 1000
195
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check_err $? "Packets did not go through $ul1, tc_flag = $TC_FLAG"
196
+
197
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tc_check_at_least_x_packets "dev $ol2 egress" 101 1000
198
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check_err $? "Packets did not go through $ol2, tc_flag = $TC_FLAG"
199
+
200
+
log_test "$@"
201
+
202
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tc filter del dev $ol2 egress protocol ipv4 pref 1 handle 101 flower
203
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tc qdisc del dev $ol2 clsact
204
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tc filter del dev $ul1 egress proto all pref 1 handle 101 flower
205
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tc qdisc del dev $ul1 clsact
206
+
}
207
+
208
+
test_traffic_ip6ip6()
209
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{
210
+
RET=0
211
+
212
+
h1mac=$(mac_get $h1)
213
+
ol1mac=$(mac_get $ol1)
214
+
215
+
tc qdisc add dev $ul1 clsact
216
+
tc filter add dev $ul1 egress proto all pref 1 handle 101 \
217
+
flower $TC_FLAG action pass
218
+
219
+
tc qdisc add dev $ol2 clsact
220
+
tc filter add dev $ol2 egress protocol ipv6 pref 1 handle 101 \
221
+
flower $TC_FLAG dst_ip 2001:db8:2::1 action pass
222
+
223
+
$MZ -6 $h1 -c 1000 -p 64 -a $h1mac -b $ol1mac -A 2001:db8:1::1 \
224
+
-B 2001:db8:2::1 -t ip -q -d 1msec
225
+
226
+
# Check ports after encap and after decap.
227
+
tc_check_at_least_x_packets "dev $ul1 egress" 101 1000
228
+
check_err $? "Packets did not go through $ul1, tc_flag = $TC_FLAG"
229
+
230
+
tc_check_at_least_x_packets "dev $ol2 egress" 101 1000
231
+
check_err $? "Packets did not go through $ol2, tc_flag = $TC_FLAG"
232
+
233
+
log_test "$@"
234
+
235
+
tc filter del dev $ol2 egress protocol ipv6 pref 1 handle 101 flower
236
+
tc qdisc del dev $ol2 clsact
237
+
tc filter del dev $ul1 egress proto all pref 1 handle 101 flower
238
+
tc qdisc del dev $ul1 clsact
239
+
}
240
+
241
+
topo_mtu_change()
242
+
{
243
+
local mtu=$1
244
+
245
+
ip link set mtu $mtu dev $h1
246
+
ip link set mtu $mtu dev $ol1
247
+
ip link set mtu $mtu dev g1a
248
+
ip link set mtu $mtu dev $ul1
249
+
ip link set mtu $mtu dev $ul1.111
250
+
ip link set mtu $mtu dev $h2
251
+
ip link set mtu $mtu dev $ol2
252
+
ip link set mtu $mtu dev g2a
253
+
ip link set mtu $mtu dev $ul2
254
+
ip link set mtu $mtu dev $ul2.111
255
+
}
256
+
257
+
test_mtu_change()
258
+
{
259
+
RET=0
260
+
261
+
ping6_do $h1 2001:db8:2::1 "-s 1800 -w 3"
262
+
check_fail $? "ping GRE IPv6 should not pass with packet size 1800"
263
+
264
+
RET=0
265
+
266
+
topo_mtu_change 2000
267
+
ping6_do $h1 2001:db8:2::1 "-s 1800 -w 3"
268
+
check_err $?
269
+
log_test "ping GRE IPv6, packet size 1800 after MTU change"
270
+
}