netdev - [PATCH bpf v2] selftests/bpf: remove bash feature in test_xdp

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Date:   Sat,  6 Feb 2021 10:26:54 +0100
From:   Björn Töpel <bjorn.topel@...il.com>
To:     ast@...nel.org, daniel@...earbox.net, netdev@...r.kernel.org,
        bpf@...r.kernel.org
Cc:     Björn Töpel <bjorn.topel@...el.com>,
        u9012063@...il.com, rdunlap@...radead.org
Subject: [PATCH bpf v2] selftests/bpf: remove bash feature in test_xdp_redirect.sh

From: Björn Töpel <bjorn.topel@...el.com>

The test_xdp_redirect.sh script uses a bash redirect feature,
'&>/dev/null'. Use '>/dev/null 2>&1' instead.

Also remove the 'set -e' since the script actually relies on that the
return value can be used to determine pass/fail of the test.

Acked-by: William Tu <u9012063@...il.com>
Fixes: 996139e801fd ("selftests: bpf: add a test for XDP redirect")
Signed-off-by: Björn Töpel <bjorn.topel@...el.com>
---
William, I kept your Acked-by.

v2: Kept /bin/sh and removed bashisms. (Randy)
---
 tools/testing/selftests/bpf/test_xdp_redirect.sh | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/tools/testing/selftests/bpf/test_xdp_redirect.sh b/tools/testing/selftests/bpf/test_xdp_redirect.sh
index dd80f0c84afb..4d4887da175c 100755
--- a/tools/testing/selftests/bpf/test_xdp_redirect.sh
+++ b/tools/testing/selftests/bpf/test_xdp_redirect.sh
@@ -46,20 +46,20 @@ test_xdp_redirect()
 
 	setup
 
-	ip link set dev veth1 $xdpmode off &> /dev/null
+	ip link set dev veth1 $xdpmode off >/dev/null 2>&1
 	if [ $? -ne 0 ];then
 		echo "selftests: test_xdp_redirect $xdpmode [SKIP]"
 		return 0
 	fi
 
-	ip -n ns1 link set veth11 $xdpmode obj xdp_dummy.o sec xdp_dummy &> /dev/null
-	ip -n ns2 link set veth22 $xdpmode obj xdp_dummy.o sec xdp_dummy &> /dev/null
-	ip link set dev veth1 $xdpmode obj test_xdp_redirect.o sec redirect_to_222 &> /dev/null
-	ip link set dev veth2 $xdpmode obj test_xdp_redirect.o sec redirect_to_111 &> /dev/null
+	ip -n ns1 link set veth11 $xdpmode obj xdp_dummy.o sec xdp_dummy >/dev/null 2>&1
+	ip -n ns2 link set veth22 $xdpmode obj xdp_dummy.o sec xdp_dummy >/dev/null 2>&1
+	ip link set dev veth1 $xdpmode obj test_xdp_redirect.o sec redirect_to_222 >/dev/null 2>&1
+	ip link set dev veth2 $xdpmode obj test_xdp_redirect.o sec redirect_to_111 >/dev/null 2>&1
 
-	ip netns exec ns1 ping -c 1 10.1.1.22 &> /dev/null
+	ip netns exec ns1 ping -c 1 10.1.1.22 >/dev/null 2>&1
 	local ret1=$?
-	ip netns exec ns2 ping -c 1 10.1.1.11 &> /dev/null
+	ip netns exec ns2 ping -c 1 10.1.1.11 >/dev/null 2>&1
 	local ret2=$?
 
 	if [ $ret1 -eq 0 -a $ret2 -eq 0 ]; then
@@ -72,7 +72,6 @@ test_xdp_redirect()
 	cleanup
 }
 
-set -e
 trap cleanup 2 3 6 9
 
 test_xdp_redirect xdpgeneric

base-commit: 6183f4d3a0a2ad230511987c6c362ca43ec0055f
-- 
2.27.0