netdev - [PATCH] selftests: net: udpgro_fwd.sh: explicitly checking the available ping feature

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Date:   Fri, 31 Dec 2021 10:01:08 +0800
From:   Jianguo Wu <wujianguo106@....com>
To:     netdev@...r.kernel.org
Cc:     Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Subject: [PATCH] selftests: net: udpgro_fwd.sh: explicitly checking the
 available ping feature

From: Jianguo Wu <wujianguo@...natelecom.cn>

As Paolo pointed out, the result of ping IPv6 address depends on
the running distro. So explicitly checking the available ping feature,
as e.g. do the bareudp.sh self-tests.

Fixes: 8b3170e07539 ("selftests: net: using ping6 for IPv6 in udpgro_fwd.sh")
Signed-off-by: Jianguo Wu <wujianguo@...natelecom.cn>
---
 tools/testing/selftests/net/udpgro_fwd.sh | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/net/udpgro_fwd.sh b/tools/testing/selftests/net/udpgro_fwd.sh
index 3ea7301..6f05e06 100755
--- a/tools/testing/selftests/net/udpgro_fwd.sh
+++ b/tools/testing/selftests/net/udpgro_fwd.sh
@@ -193,7 +193,8 @@ for family in 4 6; do
 		SUFFIX="64 nodad"
 		VXDEV=vxlan6
 		IPT=ip6tables
-		PING="ping6"
+		# Use ping6 on systems where ping doesn't handle IPv6
+		ping -w 1 -c 1 ::1 > /dev/null 2>&1 || PING="ping6"
 	fi

 	echo "IPv$family"
-- 
1.8.3.1