netdev - [PATCH net] selftests: Update fib_tests to handle missing ping6

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Date:   Tue, 17 Sep 2019 10:30:21 -0700
From:   David Ahern <dsahern@...nel.org>
To:     davem@...emloft.net
Cc:     netdev@...r.kernel.org, David Ahern <dsahern@...il.com>
Subject: [PATCH net] selftests: Update fib_tests to handle missing ping6

From: David Ahern <dsahern@...il.com>

Some distributions (e.g., debian buster) do not install ping6. Re-use
the hook in pmtu.sh to detect this and fallback to ping.

Fixes: a0e11da78f48 ("fib_tests: Add tests for metrics on routes")
Signed-off-by: David Ahern <dsahern@...il.com>
---
 tools/testing/selftests/net/fib_tests.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh
index 4465fc2dae14..cba83a12da82 100755
--- a/tools/testing/selftests/net/fib_tests.sh
+++ b/tools/testing/selftests/net/fib_tests.sh
@@ -17,6 +17,8 @@ PAUSE=no
 IP="ip -netns ns1"
 NS_EXEC="ip netns exec ns1"
 
+which ping6 > /dev/null 2>&1 && ping6=$(which ping6) || ping6=$(which ping)
+
 log_test()
 {
 	local rc=$1
@@ -1086,7 +1088,7 @@ ipv6_route_metrics_test()
 	log_test $rc 0 "Multipath route with mtu metric"
 
 	$IP -6 ro add 2001:db8:104::/64 via 2001:db8:101::2 mtu 1300
-	run_cmd "ip netns exec ns1 ping6 -w1 -c1 -s 1500 2001:db8:104::1"
+	run_cmd "ip netns exec ns1 ${ping6} -w1 -c1 -s 1500 2001:db8:104::1"
 	log_test $? 0 "Using route with mtu metric"
 
 	run_cmd "$IP -6 ro add 2001:db8:114::/64 via  2001:db8:101::2  congctl lock foo"
-- 
2.11.0