[PATCH 5.15 108/279] selftests: net: switch to socat in the GSO GRE test

Greg Kroah-Hartman
2021-11-24T13:51:52Z

From: Jakub Kicinski <kuba@kernel.org>

[ Upstream commit 0cda7d4bac5fd29dceb13df26083333fa99d6bb4 ]

Commit a985442fdecb ("selftests: net: properly support IPv6 in GSO GRE test")
is not compatible with:

Ncat: Version 7.80 ( https://nmap.org/ncat )

(which is distributed with Fedora/Red Hat), tests fail with:

nc: invalid option -- 'N'

Let's switch to socat which is far more dependable.

Fixes: 025efa0a82df ("selftests: add simple GSO GRE test")
Fixes: a985442fdecb ("selftests: net: properly support IPv6 in GSO GRE test")
Tested-by: Andrea Righi <andrea.righi@canonical.com>
Link: https://lore.kernel.org/r/20211111162929.530470-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
tools/testing/selftests/net/gre_gso.sh | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/net/gre_gso.sh b/tools/testing/selftests/net/gre_gso.sh
index fdeb44d621eb9..3224651db97b8 100755
--- a/tools/testing/selftests/net/gre_gso.sh
+++ b/tools/testing/selftests/net/gre_gso.sh
@@ -118,16 +118,18 @@ gre_gst_test_checks()
local addr=$2
local proto=$3

- $NS_EXEC nc $proto -kl $port >/dev/null &
+ [ "$proto" == 6 ] && addr="[$addr]"
+
+ $NS_EXEC socat - tcp${proto}-listen:$port,reuseaddr,fork >/dev/null &
PID=$!
while ! $NS_EXEC ss -ltn | grep -q $port; do ((i++)); sleep 0.01; done

- cat $TMPFILE | timeout 1 nc $proto -N $addr $port
+ cat $TMPFILE | timeout 1 socat -u STDIN TCP:$addr:$port
log_test $? 0 "$name - copy file w/ TSO"

ethtool -K veth0 tso off

- cat $TMPFILE | timeout 1 nc $proto -N $addr $port
+ cat $TMPFILE | timeout 1 socat -u STDIN TCP:$addr:$port
log_test $? 0 "$name - copy file w/ GSO"

ethtool -K veth0 tso on
@@ -155,8 +157,8 @@ gre6_gso_test()

sleep 2

- gre_gst_test_checks GREv6/v4 172.16.2.2
- gre_gst_test_checks GREv6/v6 2001:db8:1::2 -6
+ gre_gst_test_checks GREv6/v4 172.16.2.2 4
+ gre_gst_test_checks GREv6/v6 2001:db8:1::2 6

cleanup
}
@@ -212,8 +214,8 @@ if [ ! -x "$(command -v ip)" ]; then
exit $ksft_skip
fi

-if [ ! -x "$(command -v nc)" ]; then
- echo "SKIP: Could not run test without nc tool"
+if [ ! -x "$(command -v socat)" ]; then
+ echo "SKIP: Could not run test without socat tool"
exit $ksft_skip
fi

--
2.33.0