[PATCH 5.19 088/365] selftests: forwarding: Fix failing tests with old libnet

From: Greg Kroah-Hartman
Date: Tue Aug 23 2022 - 04:23:29 EST

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From: Ido Schimmel <idosch@xxxxxxxxxx>

commit 8bcfb4ae4d970b9a9724ddfbac26c387934e0e94 upstream.

The custom multipath hash tests use mausezahn in order to test how
changes in various packet fields affect the packet distribution across
the available nexthops.

The tool uses the libnet library for various low-level packet
construction and injection. The library started using the
"SO_BINDTODEVICE" socket option for IPv6 sockets in version 1.1.6 and
for IPv4 sockets in version 1.2.

When the option is not set, packets are not routed according to the
table associated with the VRF master device and tests fail.

Fix this by prefixing the command with "ip vrf exec", which will cause
the route lookup to occur in the VRF routing table. This makes the tests
pass regardless of the libnet library version.

Fixes: 511e8db54036 ("selftests: forwarding: Add test for custom multipath hash")
Fixes: 185b0c190bb6 ("selftests: forwarding: Add test for custom multipath hash with IPv4 GRE")
Fixes: b7715acba4d3 ("selftests: forwarding: Add test for custom multipath hash with IPv6 GRE")
Reported-by: Ivan Vecera <ivecera@xxxxxxxxxx>
Tested-by: Ivan Vecera <ivecera@xxxxxxxxxx>
Signed-off-by: Ido Schimmel <idosch@xxxxxxxxxx>
Reviewed-by: Amit Cohen <amcohen@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20220809113320.751413-1-idosch@xxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
tools/testing/selftests/net/forwarding/custom_multipath_hash.sh | 24 ++++++----
tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh | 24 ++++++----
tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh | 24 ++++++----
3 files changed, 48 insertions(+), 24 deletions(-)

--- a/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh
+++ b/tools/testing/selftests/net/forwarding/custom_multipath_hash.sh
@@ -181,37 +181,43 @@ ping_ipv6()

send_src_ipv4()
{
- $MZ $h1 -q -p 64 -A "198.51.100.2-198.51.100.253" -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A "198.51.100.2-198.51.100.253" -B 203.0.113.2 \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_dst_ipv4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B "203.0.113.2-203.0.113.253" \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B "203.0.113.2-203.0.113.253" \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_src_udp4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B 203.0.113.2 \
-d 1msec -t udp "sp=0-32768,dp=30000"
}

send_dst_udp4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B 203.0.113.2 \
-d 1msec -t udp "sp=20000,dp=0-32768"
}

send_src_ipv6()
{
- $MZ -6 $h1 -q -p 64 -A "2001:db8:1::2-2001:db8:1::fd" -B 2001:db8:4::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A "2001:db8:1::2-2001:db8:1::fd" -B 2001:db8:4::2 \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_dst_ipv6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B "2001:db8:4::2-2001:db8:4::fd" \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B "2001:db8:4::2-2001:db8:4::fd" \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

@@ -226,13 +232,15 @@ send_flowlabel()

send_src_udp6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:4::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B 2001:db8:4::2 \
-d 1msec -t udp "sp=0-32768,dp=30000"
}

send_dst_udp6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:4::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B 2001:db8:4::2 \
-d 1msec -t udp "sp=20000,dp=0-32768"
}

--- a/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh
+++ b/tools/testing/selftests/net/forwarding/gre_custom_multipath_hash.sh
@@ -276,37 +276,43 @@ ping_ipv6()

send_src_ipv4()
{
- $MZ $h1 -q -p 64 -A "198.51.100.2-198.51.100.253" -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A "198.51.100.2-198.51.100.253" -B 203.0.113.2 \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_dst_ipv4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B "203.0.113.2-203.0.113.253" \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B "203.0.113.2-203.0.113.253" \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_src_udp4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B 203.0.113.2 \
-d 1msec -t udp "sp=0-32768,dp=30000"
}

send_dst_udp4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B 203.0.113.2 \
-d 1msec -t udp "sp=20000,dp=0-32768"
}

send_src_ipv6()
{
- $MZ -6 $h1 -q -p 64 -A "2001:db8:1::2-2001:db8:1::fd" -B 2001:db8:2::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A "2001:db8:1::2-2001:db8:1::fd" -B 2001:db8:2::2 \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_dst_ipv6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B "2001:db8:2::2-2001:db8:2::fd" \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B "2001:db8:2::2-2001:db8:2::fd" \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

@@ -321,13 +327,15 @@ send_flowlabel()

send_src_udp6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B 2001:db8:2::2 \
-d 1msec -t udp "sp=0-32768,dp=30000"
}

send_dst_udp6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B 2001:db8:2::2 \
-d 1msec -t udp "sp=20000,dp=0-32768"
}

--- a/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh
+++ b/tools/testing/selftests/net/forwarding/ip6gre_custom_multipath_hash.sh
@@ -278,37 +278,43 @@ ping_ipv6()

send_src_ipv4()
{
- $MZ $h1 -q -p 64 -A "198.51.100.2-198.51.100.253" -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A "198.51.100.2-198.51.100.253" -B 203.0.113.2 \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_dst_ipv4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B "203.0.113.2-203.0.113.253" \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B "203.0.113.2-203.0.113.253" \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_src_udp4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B 203.0.113.2 \
-d 1msec -t udp "sp=0-32768,dp=30000"
}

send_dst_udp4()
{
- $MZ $h1 -q -p 64 -A 198.51.100.2 -B 203.0.113.2 \
+ ip vrf exec v$h1 $MZ $h1 -q -p 64 \
+ -A 198.51.100.2 -B 203.0.113.2 \
-d 1msec -t udp "sp=20000,dp=0-32768"
}

send_src_ipv6()
{
- $MZ -6 $h1 -q -p 64 -A "2001:db8:1::2-2001:db8:1::fd" -B 2001:db8:2::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A "2001:db8:1::2-2001:db8:1::fd" -B 2001:db8:2::2 \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

send_dst_ipv6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B "2001:db8:2::2-2001:db8:2::fd" \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B "2001:db8:2::2-2001:db8:2::fd" \
-d 1msec -c 50 -t udp "sp=20000,dp=30000"
}

@@ -323,13 +329,15 @@ send_flowlabel()

send_src_udp6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B 2001:db8:2::2 \
-d 1msec -t udp "sp=0-32768,dp=30000"
}

send_dst_udp6()
{
- $MZ -6 $h1 -q -p 64 -A 2001:db8:1::2 -B 2001:db8:2::2 \
+ ip vrf exec v$h1 $MZ -6 $h1 -q -p 64 \
+ -A 2001:db8:1::2 -B 2001:db8:2::2 \
-d 1msec -t udp "sp=20000,dp=0-32768"
}

Next message: Heikki Krogerus: "Re: [PATCH 1/4] platform/chrome: cros_ec_typec: Add bit offset for DP VDO"
Previous message: Greg Kroah-Hartman: "[PATCH 4.9 025/101] Makefile: link with -z noexecstack --no-warn-rwx-segments"
In reply to: Greg Kroah-Hartman: "[PATCH 5.19 089/365] dt-bindings: arm: qcom: fix Alcatel OneTouch Idol 3 compatibles"
Next in thread: Greg Kroah-Hartman: "[PATCH 5.19 084/365] net: phy: c45 baset1: do not skip aneg configuration if clock role is not specified"
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