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selftests: pmtu: use -oneline for ip route list cache 

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: b964641e99 ("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>
This commit is contained in:
Thadeu Lima de Souza Cascardo 2019-11-28 15:58:06 -03:00 committed by David S. Miller
parent aaa3425628
commit 2745aea675
1 changed files with 2 additions and 3 deletions
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5
tools/testing/selftests/net/pmtu.sh
View File

@ -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