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Commit bb2bd090 authored by Florian Westphal's avatar Florian Westphal Committed by David S. Miller
Browse files

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: default avatarFlorian Westphal <fw@strlen.de>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6a9e9cea

tools/testing/selftests/net/rtnetlink.sh

+20 −0
Original line number Diff line number Diff line
@@ -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