netdev - [iproute PATCH 1/2] testsuite: skip link show test on big endian systems

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Date:   Wed,  8 Feb 2017 00:04:21 +0100
From:   Phil Sutter <phil@....cc>
To:     Stephen Hemminger <stephen@...workplumber.org>
Cc:     netdev@...r.kernel.org
Subject: [iproute PATCH 1/2] testsuite: skip link show test on big endian systems

Netlink protocol is in host byte order, so the provided binary netlink
message buffer being in little endian format will cause the test to fail
on big endian systems.

Signed-off-by: Phil Sutter <phil@....cc>
---
 .gitignore                                    | 1 +
 testsuite/Makefile                            | 1 +
 testsuite/tests/ip/link/show_dev_wo_vf_rate.t | 5 +++++
 testsuite/tools/Makefile                      | 2 ++
 testsuite/tools/is_big_endian.c               | 7 +++++++
 5 files changed, 16 insertions(+)
 create mode 100644 testsuite/tools/Makefile
 create mode 100644 testsuite/tools/is_big_endian.c

diff --git a/.gitignore b/.gitignore
index 74a5496ddf7aa..a1f295dac3dd2 100644
--- a/.gitignore
+++ b/.gitignore
@@ -36,6 +36,7 @@ series
 # tests
 testsuite/results
 testsuite/iproute2/iproute2-this
+testsuite/tools/is_big_endian
 
 # doc files generated at runtime
 doc/*.aux
diff --git a/testsuite/Makefile b/testsuite/Makefile
index 2027650051d48..17568881b8b66 100644
--- a/testsuite/Makefile
+++ b/testsuite/Makefile
@@ -24,6 +24,7 @@ configure:
 
 compile: configure
 	echo "Entering iproute2" && cd iproute2 && $(MAKE) && cd ..;
+	echo "Entering tools" && cd tools && $(MAKE) && cd ..;
 
 listtests:
 	@for t in $(TESTS); do \
diff --git a/testsuite/tests/ip/link/show_dev_wo_vf_rate.t b/testsuite/tests/ip/link/show_dev_wo_vf_rate.t
index a600ba65c5bec..ad90af5400271 100755
--- a/testsuite/tests/ip/link/show_dev_wo_vf_rate.t
+++ b/testsuite/tests/ip/link/show_dev_wo_vf_rate.t
@@ -2,5 +2,10 @@
 
 source lib/generic.sh
 
+if ./tools/is_big_endian; then
+	ts_log "won't work on big endian system"
+	ts_skip
+fi
+
 NL_FILE="tests/ip/link/dev_wo_vf_rate.nl"
 ts_ip "$0" "Show VF devices w/o VF rate info" -d monitor file $NL_FILE
diff --git a/testsuite/tools/Makefile b/testsuite/tools/Makefile
new file mode 100644
index 0000000000000..ecbea16c2c1cc
--- /dev/null
+++ b/testsuite/tools/Makefile
@@ -0,0 +1,2 @@
+is_big_endian: is_big_endian.c
+	$(CC) -o $@ $<
diff --git a/testsuite/tools/is_big_endian.c b/testsuite/tools/is_big_endian.c
new file mode 100644
index 0000000000000..303e91b4603e8
--- /dev/null
+++ b/testsuite/tools/is_big_endian.c
@@ -0,0 +1,7 @@
+//#include <stdio.h>
+#include <arpa/inet.h>
+
+int main(void)
+{
+	return 1 != ntohs(1);
+}
-- 
2.11.0