From c0e1eebfe99ee9953432c154cbdbfe4db18ad24b Mon Sep 17 00:00:00 2001
From: Ido Schimmel <idosch@nvidia.com>
Date: Tue, 8 Aug 2023 17:14:51 +0300
Subject: [PATCH] selftests: forwarding: Set default IPv6 traceroute utility

commit 38f7c44d6e760a8513557e27340d61b820c91b8f upstream.

The test uses the 'TROUTE6' environment variable to encode the name of
the IPv6 traceroute utility. By default (without a configuration file),
this variable is not set, resulting in failures:

 # ./ip6_forward_instats_vrf.sh
 TEST: ping6                                                         [ OK ]
 TEST: Ip6InTooBigErrors                                             [ OK ]
 TEST: Ip6InHdrErrors                                                [FAIL]
 TEST: Ip6InAddrErrors                                               [ OK ]
 TEST: Ip6InDiscards                                                 [ OK ]

Fix by setting a default utility name and skip the test if the utility
is not present.

Fixes: 0857d6f8c759 ("ipv6: When forwarding count rx stats on the orig netdev")
Reported-by: Mirsad Todorovac <mirsad.todorovac@alu.unizg.hr>
Closes: https://lore.kernel.org/netdev/adc5e40d-d040-a65e-eb26-edf47dac5b02@alu.unizg.hr/
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Petr Machata <petrm@nvidia.com>
Tested-by: Mirsad Todorovac <mirsad.todorovac@alu.unizg.hr>
Reviewed-by: Hangbin Liu <liuhangbin@gmail.com>
Acked-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://lore.kernel.org/r/20230808141503.4060661-6-idosch@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 .../testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh | 2 ++
 tools/testing/selftests/net/forwarding/lib.sh                   | 1 +
 2 files changed, 3 insertions(+)

diff --git a/tools/testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh b/tools/testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh
index 9f5b3e2e5e954..49fa94b53a1ca 100755
--- a/tools/testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh
+++ b/tools/testing/selftests/net/forwarding/ip6_forward_instats_vrf.sh
@@ -14,6 +14,8 @@ ALL_TESTS="
 NUM_NETIFS=4
 source lib.sh
 
+require_command $TROUTE6
+
 h1_create()
 {
 	simple_if_init $h1 2001:1:1::2/64
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 9ddb68dd6a089..659dfc53df622 100755
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -30,6 +30,7 @@ REQUIRE_MZ=${REQUIRE_MZ:=yes}
 REQUIRE_MTOOLS=${REQUIRE_MTOOLS:=no}
 STABLE_MAC_ADDRS=${STABLE_MAC_ADDRS:=no}
 TCPDUMP_EXTRA_FLAGS=${TCPDUMP_EXTRA_FLAGS:=}
+TROUTE6=${TROUTE6:=traceroute6}
 
 relative_path="${BASH_SOURCE%/*}"
 if [[ "$relative_path" == "${BASH_SOURCE}" ]]; then