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Subject[PATCH 5.4 38/46] selftests: pmtu: use -oneline for ip route list cache
Date
From: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

[ Upstream commit 2745aea6750ff0d2c48285d25bdb00e5b636ec8b ]

Some versions of iproute2 will output more than one line per entry, which
will cause the test to fail, like:

TEST: ipv6: list and flush cached exceptions [FAIL]
can't list cached exceptions

That happens, for example, with iproute2 4.15.0. When using the -oneline
option, this will work just fine:

TEST: ipv6: list and flush cached exceptions [ OK ]

This also works just fine with a more recent version of iproute2, like
5.4.0.

For some reason, two lines are printed for the IPv4 test no matter what
version of iproute2 is used. Use the same -oneline parameter there instead
of counting the lines twice.

Fixes: b964641e9925 ("selftests: pmtu: Make list_flush_ipv6_exception test more demanding")
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
Acked-by: Stefano Brivio <sbrivio@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
tools/testing/selftests/net/pmtu.sh | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)

--- a/tools/testing/selftests/net/pmtu.sh
+++ b/tools/testing/selftests/net/pmtu.sh
@@ -1249,8 +1249,7 @@ test_list_flush_ipv4_exception() {
done
run_cmd ${ns_a} ping -q -M want -i 0.1 -c 2 -s 1800 "${dst2}"

- # Each exception is printed as two lines
- if [ "$(${ns_a} ip route list cache | wc -l)" -ne 202 ]; then
+ if [ "$(${ns_a} ip -oneline route list cache | wc -l)" -ne 101 ]; then
err " can't list cached exceptions"
fail=1
fi
@@ -1300,7 +1299,7 @@ test_list_flush_ipv6_exception() {
run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst_prefix1}${i}"
done
run_cmd ${ns_a} ping -q -M want -i 0.1 -w 1 -s 1800 "${dst2}"
- if [ "$(${ns_a} ip -6 route list cache | wc -l)" -ne 101 ]; then
+ if [ "$(${ns_a} ip -oneline -6 route list cache | wc -l)" -ne 101 ]; then
err " can't list cached exceptions"
fail=1
fi

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