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| author |   Florian Westphal <fw@strlen.de> | 2019-06-27 14:03:33 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-06-27 09:54:35 -0700 |
| commit | bb2bd090854cc608d4d8a4d14955eb13dffa94ab (patch) | |
| tree | 485cac7117ac0bb3dd6713baaedaa37f5d7a7094 /tools | |
| parent | net: ipv4: fix infinite loop on secondary addr promotion (diff) | |
| download | linux-dev-bb2bd090854cc608d4d8a4d14955eb13dffa94ab.tar.xz linux-dev-bb2bd090854cc608d4d8a4d14955eb13dffa94ab.zip | |
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 <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
| -rwxr-xr-x | tools/testing/selftests/net/rtnetlink.sh | 20 |
1 files changed, 20 insertions, 0 deletions
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 |