Test mirror-to-gretap with bridge in UL

PATCH In review Petr Machata 2 participants 11 messages May 31, 2018 – Jun 1, 2018

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Networking Network drivers Kselftest IPv4/IPv6

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Petr Machata

author

2018-05-31 17:51 UTC #0 lore raw

cover Test mirror-to-gretap with bridge in UL

This patchset adds more tests to the mirror-to-gretap suite where bridge is present in the underlay. Specifically it adds tests for bridge VLAN handling, FDB, and bridge port STP status.

In patches #1-#3, the codebase is refactored to support the new tests.

In patch #4, an STP test is added to the mirroring library, that will later be called from bridge tests.

In patches #5-#8, the test for mirror-to-gretap with an 802.1q bridge in underlay is adapted and more tests are added.

In patch #9, an STP test is added to the test suite for mirror-to-gretap with an 802.1d bridge in underlay.

Petr Machata (9):
selftests: forwarding: lib: Move here vlan_capture_{,un}install()
selftests: forwarding: mirror_lib: Move here

    do_test_span_vlan_dir_ips()

selftests: forwarding: mirror_lib: skip_hw the VLAN capture
selftests: forwarding: mirror_gre_lib: Add STP test
selftests: forwarding: mirror_gre_vlan_bridge_1q: Fix tunnel name
selftests: forwarding: mirror_gre_vlan_bridge_1q: Test final config
selftests: forwarding: mirror_gre_vlan_bridge_1q: Rename two tests
selftests: forwarding: mirror_gre_vlan_bridge_1q: Add more tests
selftests: forwarding: mirror_gre_bridge_1d_vlan: Add STP test

 tools/testing/selftests/net/forwarding/lib.sh      |  23 ++++
 .../net/forwarding/mirror_gre_bridge_1d_vlan.sh    |  12 ++
 .../selftests/net/forwarding/mirror_gre_lib.sh     |  32 +++++
 .../net/forwarding/mirror_gre_vlan_bridge_1q.sh    | 148 +++++++++++++++++++--
 .../testing/selftests/net/forwarding/mirror_lib.sh |  38 ++++++
 .../selftests/net/forwarding/mirror_vlan.sh        |  38 ------
 6 files changed, 244 insertions(+), 47 deletions(-)

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Petr Machata

author

2018-05-31 17:52 UTC #1 lore raw

PATCH 1/9 selftests: forwarding: lib: Move here vlan_capture_{,un}install()

Move vlan_capture_install() and vlan_capture_uninstall() from mirror_vlan.sh test to lib.sh so that it can be reused in other tests.

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 tools/testing/selftests/net/forwarding/lib.sh      | 23 ++++++++++++++++++++++
 .../selftests/net/forwarding/mirror_vlan.sh        | 23 ----------------------
 2 files changed, 23 insertions(+), 23 deletions(-)

tools/testing/selftests/net/forwarding/lib.sh +23 -0

index 89ba4cd..7b18a53 100644
@@ -514,6 +514,29 @@ icmp6_capture_uninstall()
 	__icmp_capture_add_del del 100 v6 "$@"
 }
 
+__vlan_capture_add_del()
+{
+	local add_del=$1; shift
+	local pref=$1; shift
+	local dev=$1; shift
+	local filter=$1; shift
+
+	tc filter $add_del dev "$dev" ingress \
+	   proto 802.1q pref $pref \
+	   flower $filter \
+	   action pass
+}
+
+vlan_capture_install()
+{
+	__vlan_capture_add_del add 100 "$@"
+}
+
+vlan_capture_uninstall()
+{
+	__vlan_capture_add_del del 100 "$@"
+}
+
 matchall_sink_create()
 {
 	local dev=$1; shift

tools/testing/selftests/net/forwarding/mirror_vlan.sh +0 ~~-23~~

index 1e10520..758b6d0 100755
@@ -76,29 +76,6 @@ test_vlan()
 	test_vlan_dir egress 0 8
 }
 
-vlan_capture_add_del()
-{
-	local add_del=$1; shift
-	local pref=$1; shift
-	local dev=$1; shift
-	local filter=$1; shift
-
-	tc filter $add_del dev "$dev" ingress \
-	   proto 802.1q pref $pref \
-	   flower $filter \
-	   action pass
-}
-
-vlan_capture_install()
-{
-	vlan_capture_add_del add 100 "$@"
-}
-
-vlan_capture_uninstall()
-{
-	vlan_capture_add_del del 100 "$@"
-}
-
 do_test_span_vlan_dir_ips()
 {
 	local expect=$1; shift

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Petr Machata

author

2018-05-31 17:52 UTC #2 lore raw

PATCH 2/9 selftests: forwarding: mirror_lib: Move here do_test_span_vlan_dir_ips()

In reply to Petr Machata

Move the function do_test_span_vlan_dir_ips() from mirror_vlan.sh test to a library file mirror_lib.sh to allow reuse. Fill in other entry points similar to other testing functions in mirror_lib.sh, they will be useful in following patches.

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 .../testing/selftests/net/forwarding/mirror_lib.sh | 35 ++++++++++++++++++++++
 .../selftests/net/forwarding/mirror_vlan.sh        | 15 ----------
 2 files changed, 35 insertions(+), 15 deletions(-)

tools/testing/selftests/net/forwarding/mirror_lib.sh +35 -0

index 04cbc38..67efe25 100644
@@ -92,3 +92,38 @@ test_span_dir()
 {
 	test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
 }
+
+do_test_span_vlan_dir_ips()
+{
+	local expect=$1; shift
+	local dev=$1; shift
+	local vid=$1; shift
+	local direction=$1; shift
+	local ip1=$1; shift
+	local ip2=$1; shift
+
+	vlan_capture_install $dev "vlan_id $vid"
+	mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
+	mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
+	vlan_capture_uninstall $dev
+}
+
+quick_test_span_vlan_dir_ips()
+{
+	do_test_span_vlan_dir_ips 10 "$@"
+}
+
+fail_test_span_vlan_dir_ips()
+{
+	do_test_span_vlan_dir_ips 0 "$@"
+}
+
+quick_test_span_vlan_dir()
+{
+	quick_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
+}
+
+fail_test_span_vlan_dir()
+{
+	fail_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
+}

tools/testing/selftests/net/forwarding/mirror_vlan.sh +0 ~~-15~~

index 758b6d0..20b37a5 100755
@@ -76,21 +76,6 @@ test_vlan()
 	test_vlan_dir egress 0 8
 }
 
-do_test_span_vlan_dir_ips()
-{
-	local expect=$1; shift
-	local dev=$1; shift
-	local vid=$1; shift
-	local direction=$1; shift
-	local ip1=$1; shift
-	local ip2=$1; shift
-
-	vlan_capture_install $dev "vlan_id $vid"
-	mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
-	mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
-	vlan_capture_uninstall $dev
-}
-
 test_tagged_vlan_dir()
 {
 	local direction=$1; shift

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Petr Machata

author

2018-05-31 17:52 UTC #3 lore raw

PATCH 3/9 selftests: forwarding: mirror_lib: skip_hw the VLAN capture

In reply to Petr Machata

When the VLAN capture is installed on a front panel device and not a soft device, the packets are counted twice: once in fast path, and once after they are trapped to the kernel. Resolve the problem by passing skip_hw flag to vlan_capture_install().

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 tools/testing/selftests/net/forwarding/mirror_lib.sh | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

tools/testing/selftests/net/forwarding/mirror_lib.sh +4 -1

index 67efe25..d36dc26 100644
@@ -102,7 +102,10 @@ do_test_span_vlan_dir_ips()
 	local ip1=$1; shift
 	local ip2=$1; shift
 
-	vlan_capture_install $dev "vlan_id $vid"
+	# Install the capture as skip_hw to avoid double-counting of packets.
+	# The traffic is meant for local box anyway, so will be trapped to
+	# kernel.
+	vlan_capture_install $dev "skip_hw vlan_id $vid"
 	mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
 	mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
 	vlan_capture_uninstall $dev

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Petr Machata

author

2018-05-31 17:52 UTC #4 lore raw

PATCH 4/9 selftests: forwarding: mirror_gre_lib: Add STP test

In reply to Petr Machata

Add a reusable full test that toggles STP state of a given bridge port and checks that the mirroring reacts appropriately. The test will be used by bridge tests in follow-up patches.

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 .../selftests/net/forwarding/mirror_gre_lib.sh     | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)

tools/testing/selftests/net/forwarding/mirror_gre_lib.sh +32 -0

index 92ef6dd..619b469 100644
@@ -96,3 +96,35 @@ full_test_span_gre_dir_vlan()
 {
 	full_test_span_gre_dir_vlan_ips "$@" 192.0.2.1 192.0.2.2
 }
+
+full_test_span_gre_stp_ips()
+{
+	local tundev=$1; shift
+	local nbpdev=$1; shift
+	local what=$1; shift
+	local ip1=$1; shift
+	local ip2=$1; shift
+	local h3mac=$(mac_get $h3)
+
+	RET=0
+
+	mirror_install $swp1 ingress $tundev "matchall $tcflags"
+	quick_test_span_gre_dir_ips $tundev ingress $ip1 $ip2
+
+	bridge link set dev $nbpdev state disabled
+	sleep 1
+	fail_test_span_gre_dir_ips $tundev ingress $ip1 $ip2
+
+	bridge link set dev $nbpdev state forwarding
+	sleep 1
+	quick_test_span_gre_dir_ips $tundev ingress $ip1 $ip2
+
+	mirror_uninstall $swp1 ingress
+
+	log_test "$what: STP state ($tcflags)"
+}
+
+full_test_span_gre_stp()
+{
+	full_test_span_gre_stp_ips "$@" 192.0.2.1 192.0.2.2
+}

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Petr Machata

author

2018-05-31 17:52 UTC #5 lore raw

PATCH 5/9 selftests: forwarding: mirror_gre_vlan_bridge_1q: Fix tunnel name

In reply to Petr Machata

The "ip6gretap" in the test name refers to the tunnel device type that the test is supposed to be testing. However test_ip6gretap_forbidden() tests, due to a typo, a gretap tunnel. Fix the typo.

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh +1 -1

index 01ec28a..29fde73 100755
@@ -108,7 +108,7 @@ test_gretap_forbidden()
 
 test_ip6gretap_forbidden()
 {
-	test_span_gre_forbidden gt4 "mirror to ip6gretap"
+	test_span_gre_forbidden gt6 "mirror to ip6gretap"
 }
 
 test_all()

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Petr Machata

author

2018-05-31 17:52 UTC #6 lore raw

PATCH 6/9 selftests: forwarding: mirror_gre_vlan_bridge_1q: Test final config

In reply to Petr Machata

After the final change reestablishes the original configuration, make sure the traffic flows again as it should.

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh +3 -2

index 29fde73..0a3bac9 100755
@@ -91,12 +91,13 @@ test_span_gre_forbidden()
 	# Now forbid the VLAN at the bridge and see it fail.
 	bridge vlan del dev br1 vid 555 self
 	sleep 1
-
 	fail_test_span_gre_dir $tundev ingress
-	mirror_uninstall $swp1 ingress
 
 	bridge vlan add dev br1 vid 555 self
 	sleep 1
+	quick_test_span_gre_dir $tundev ingress
+
+	mirror_uninstall $swp1 ingress
 
 	log_test "$what: vlan forbidden at a bridge ($tcflags)"
 }

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Petr Machata

author

2018-05-31 17:52 UTC #7 lore raw

PATCH 7/9 selftests: forwarding: mirror_gre_vlan_bridge_1q: Rename two tests

In reply to Petr Machata

Rename test_gretap_forbidden() and test_ip6gretap_forbidden() to a more specific test_gretap_forbidden_cpu() and test_ip6gretap_forbidden_cpu(). This will make it clearer which is which when further down a patch is introduced that forbids a VLAN on regular bridge port.

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 .../selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh  | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh +7 -7

index 0a3bac9..d91b347 100755
@@ -10,8 +10,8 @@
 ALL_TESTS="
 	test_gretap
 	test_ip6gretap
-	test_gretap_forbidden
-	test_ip6gretap_forbidden
+	test_gretap_forbidden_cpu
+	test_ip6gretap_forbidden_cpu
 "
 
 NUM_NETIFS=6

@@ -77,7 +77,7 @@ test_ip6gretap()
 	test_vlan_match gt6 'vlan_id 555 vlan_ethtype ipv6' "mirror to ip6gretap"
 }
 
-test_span_gre_forbidden()
+test_span_gre_forbidden_cpu()
 {
 	local tundev=$1; shift
 	local what=$1; shift

@@ -102,14 +102,14 @@ test_span_gre_forbidden()
 	log_test "$what: vlan forbidden at a bridge ($tcflags)"
 }
 
-test_gretap_forbidden()
+test_gretap_forbidden_cpu()
 {
-	test_span_gre_forbidden gt4 "mirror to gretap"
+	test_span_gre_forbidden_cpu gt4 "mirror to gretap"
 }
 
-test_ip6gretap_forbidden()
+test_ip6gretap_forbidden_cpu()
 {
-	test_span_gre_forbidden gt6 "mirror to ip6gretap"
+	test_span_gre_forbidden_cpu gt6 "mirror to ip6gretap"
 }
 
 test_all()

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Petr Machata

author

2018-05-31 17:52 UTC #8 lore raw

PATCH 8/9 selftests: forwarding: mirror_gre_vlan_bridge_1q: Add more tests

In reply to Petr Machata

Offloading of mirror-to-gretap in mlxsw is tricky especially in cases when the gretap underlay involves bridges. Add more tests that exercise the bridge handling code:

- forbidden_egress tests that check vlan removal on bridge port in the underlay packet path
- untagged_egress tests that similarly check "egress untagged"
- fdb_roaming tests that check whether learning FDB on a different port is reflected
- stp tests for handling port STP status of bridge egress port

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 .../net/forwarding/mirror_gre_vlan_bridge_1q.sh    | 129 +++++++++++++++++++++
 1 file changed, 129 insertions(+)

tools/testing/selftests/net/forwarding/mirror_gre_vlan_bridge_1q.sh +129 -0

index d91b347..5dbc7a0 100755
@@ -12,6 +12,14 @@ ALL_TESTS="
 	test_ip6gretap
 	test_gretap_forbidden_cpu
 	test_ip6gretap_forbidden_cpu
+	test_gretap_forbidden_egress
+	test_ip6gretap_forbidden_egress
+	test_gretap_untagged_egress
+	test_ip6gretap_untagged_egress
+	test_gretap_fdb_roaming
+	test_ip6gretap_fdb_roaming
+	test_gretap_stp
+	test_ip6gretap_stp
 "
 
 NUM_NETIFS=6

@@ -43,12 +51,14 @@ setup_prepare()
 
 	ip link set dev $swp3 master br1
 	bridge vlan add dev $swp3 vid 555
+	bridge vlan add dev $swp2 vid 555
 }
 
 cleanup()
 {
 	pre_cleanup
 
+	ip link set dev $swp2 nomaster
 	ip link set dev $swp3 nomaster
 	vlan_destroy $h3 555
 	vlan_destroy br1 555

@@ -112,6 +122,125 @@ test_ip6gretap_forbidden_cpu()
 	test_span_gre_forbidden_cpu gt6 "mirror to ip6gretap"
 }
 
+test_span_gre_forbidden_egress()
+{
+	local tundev=$1; shift
+	local what=$1; shift
+
+	RET=0
+
+	mirror_install $swp1 ingress $tundev "matchall $tcflags"
+	quick_test_span_gre_dir $tundev ingress
+
+	bridge vlan del dev $swp3 vid 555
+	sleep 1
+	fail_test_span_gre_dir $tundev ingress
+
+	bridge vlan add dev $swp3 vid 555
+	# Re-prime FDB
+	arping -I br1.555 192.0.2.130 -fqc 1
+	sleep 1
+	quick_test_span_gre_dir $tundev ingress
+
+	mirror_uninstall $swp1 ingress
+
+	log_test "$what: vlan forbidden at a bridge egress ($tcflags)"
+}
+
+test_gretap_forbidden_egress()
+{
+	test_span_gre_forbidden_egress gt4 "mirror to gretap"
+}
+
+test_ip6gretap_forbidden_egress()
+{
+	test_span_gre_forbidden_egress gt6 "mirror to ip6gretap"
+}
+
+test_span_gre_untagged_egress()
+{
+	local tundev=$1; shift
+	local what=$1; shift
+
+	RET=0
+
+	mirror_install $swp1 ingress $tundev "matchall $tcflags"
+
+	quick_test_span_gre_dir $tundev ingress
+	quick_test_span_vlan_dir $h3 555 ingress
+
+	bridge vlan add dev $swp3 vid 555 pvid untagged
+	sleep 1
+	quick_test_span_gre_dir $tundev ingress
+	fail_test_span_vlan_dir $h3 555 ingress
+
+	bridge vlan add dev $swp3 vid 555
+	sleep 1
+	quick_test_span_gre_dir $tundev ingress
+	quick_test_span_vlan_dir $h3 555 ingress
+
+	mirror_uninstall $swp1 ingress
+
+	log_test "$what: vlan untagged at a bridge egress ($tcflags)"
+}
+
+test_gretap_untagged_egress()
+{
+	test_span_gre_untagged_egress gt4 "mirror to gretap"
+}
+
+test_ip6gretap_untagged_egress()
+{
+	test_span_gre_untagged_egress gt6 "mirror to ip6gretap"
+}
+
+test_span_gre_fdb_roaming()
+{
+	local tundev=$1; shift
+	local what=$1; shift
+	local h3mac=$(mac_get $h3)
+
+	RET=0
+
+	mirror_install $swp1 ingress $tundev "matchall $tcflags"
+	quick_test_span_gre_dir $tundev ingress
+
+	bridge fdb del dev $swp3 $h3mac vlan 555 master
+	bridge fdb add dev $swp2 $h3mac vlan 555 master
+	sleep 1
+	fail_test_span_gre_dir $tundev ingress
+
+	bridge fdb del dev $swp2 $h3mac vlan 555 master
+	# Re-prime FDB
+	arping -I br1.555 192.0.2.130 -fqc 1
+	sleep 1
+	quick_test_span_gre_dir $tundev ingress
+
+	mirror_uninstall $swp1 ingress
+
+	log_test "$what: MAC roaming ($tcflags)"
+}
+
+test_gretap_fdb_roaming()
+{
+	test_span_gre_fdb_roaming gt4 "mirror to gretap"
+}
+
+test_ip6gretap_fdb_roaming()
+{
+	test_span_gre_fdb_roaming gt6 "mirror to ip6gretap"
+}
+
+test_gretap_stp()
+{
+	full_test_span_gre_stp gt4 $swp3 "mirror to gretap"
+}
+
+test_ip6gretap_stp()
+{
+	full_test_span_gre_stp gt6 $swp3 "mirror to ip6gretap"
+}
+
 test_all()
 {
 	slow_path_trap_install $swp1 ingress

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Petr Machata

author

2018-05-31 17:52 UTC #9 lore raw

PATCH 9/9 selftests: forwarding: mirror_gre_bridge_1d_vlan: Add STP test

In reply to Petr Machata

To test offloading of mirror-to-gretap in mlxsw for cases that a VLAN-unaware bridge is in underlay packet path, test that the STP status of bridge egress port is reflected.

Signed-off-by Petr Machata <petrm at mellanox.com>

---
 .../selftests/net/forwarding/mirror_gre_bridge_1d_vlan.sh    | 12 ++++++++++++
 1 file changed, 12 insertions(+)

tools/testing/selftests/net/forwarding/mirror_gre_bridge_1d_vlan.sh +12 -0

index 3d47afc..3bb4c2b 100755
@@ -11,6 +11,8 @@
 ALL_TESTS="
 	test_gretap
 	test_ip6gretap
+	test_gretap_stp
+	test_ip6gretap_stp
 "
 
 NUM_NETIFS=6

@@ -80,6 +82,16 @@ test_ip6gretap()
 	test_vlan_match gt6 'vlan_id 555 vlan_ethtype ipv6' "mirror to ip6gretap"
 }
 
+test_gretap_stp()
+{
+	full_test_span_gre_stp gt4 $swp3.555 "mirror to gretap"
+}
+
+test_ip6gretap_stp()
+{
+	full_test_span_gre_stp gt6 $swp3.555 "mirror to ip6gretap"
+}
+
 test_all()
 {
 	slow_path_trap_install $swp1 ingress

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2.4.11

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David Miller

maintainer

2018-06-01 18:11 UTC #10 lore raw

In reply to Petr Machata

From: Petr Machata <[email protected]>
Date: Thu, 31 May 2018 19:51:56 +0200

Quoted 6 lines

This patchset adds more tests to the mirror-to-gretap suite where bridge is present in the underlay. Specifically it adds tests for bridge VLAN handling, FDB, and bridge port STP status.
In patches #1-#3, the codebase is refactored to support the new tests.

Quoted 8 lines

In patch #4, an STP test is added to the mirroring library, that will later be called from bridge tests.
In patches #5-#8, the test for mirror-to-gretap with an 802.1q bridge in underlay is adapted and more tests are added.
In patch #9, an STP test is added to the test suite for mirror-to-gretap with an 802.1d bridge in underlay.

Series applied, thanks.
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