tree bf1184fe334ca092ebf06a492c882d29db7e2251
parent f2b122d3d6ff2f2bef0f23e6cb2b56384da7f92a
author Hangbin Liu <liuhangbin@gmail.com> 1590650113 +0800
committer David S. Miller <davem@davemloft.net> 1590796613 -0700

neigh: fix ARP retransmit timer guard

In commit 19e16d220f0a ("neigh: support smaller retrans_time settting")
we add more accurate control for ARP and NS. But for ARP I forgot to
update the latest guard in neigh_timer_handler(), then the next
retransmit would be reset to jiffies + HZ/2 if we set the retrans_time
less than 500ms. Fix it by setting the time_before() check to HZ/100.

IPv6 does not have this issue.

Reported-by: Jianwen Ji <jiji@redhat.com>
Fixes: 19e16d220f0a ("neigh: support smaller retrans_time settting")
Signed-off-by: Hangbin Liu <liuhangbin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>