From: Florian Westphal Date: Thu, 27 Jun 2019 12:03:33 +0000 (+0200) Subject: selftests: rtnetlink: add small test case with 'promote_secondaries' enabled X-Git-Tag: microblaze-v5.4-rc1~347^2~135^2 X-Git-Url: http://git.monstr.eu/?a=commitdiff_plain;h=bb2bd090854cc608d4d8a4d14955eb13dffa94ab;p=linux-2.6-microblaze.git selftests: rtnetlink: add small test case with 'promote_secondaries' enabled This exercises the 'promote_secondaries' code path. Without previous fix, this triggers infinite loop/soft lockup: ifconfig process spinning at 100%, never to return. Signed-off-by: Florian Westphal Signed-off-by: David S. Miller --- diff --git a/tools/testing/selftests/net/rtnetlink.sh b/tools/testing/selftests/net/rtnetlink.sh index ed606a2e3865..505628884783 100755 --- a/tools/testing/selftests/net/rtnetlink.sh +++ b/tools/testing/selftests/net/rtnetlink.sh @@ -269,6 +269,25 @@ kci_test_addrlft() echo "PASS: preferred_lft addresses have expired" } +kci_test_promote_secondaries() +{ + promote=$(sysctl -n net.ipv4.conf.$devdummy.promote_secondaries) + + sysctl -q net.ipv4.conf.$devdummy.promote_secondaries=1 + + for i in $(seq 2 254);do + IP="10.23.11.$i" + ip -f inet addr add $IP/16 brd + dev "$devdummy" + ifconfig "$devdummy" $IP netmask 255.255.0.0 + done + + ip addr flush dev "$devdummy" + + [ $promote -eq 0 ] && sysctl -q net.ipv4.conf.$devdummy.promote_secondaries=0 + + echo "PASS: promote_secondaries complete" +} + kci_test_addrlabel() { ret=0 @@ -1161,6 +1180,7 @@ kci_test_rtnl() kci_test_polrouting kci_test_route_get kci_test_addrlft + kci_test_promote_secondaries kci_test_tc kci_test_gre kci_test_gretap