net_sched: red: Avoid devision by zero
authorNogah Frankel <nogahf@mellanox.com>
Mon, 4 Dec 2017 11:31:10 +0000 (13:31 +0200)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Sun, 25 Feb 2018 10:07:59 +0000 (11:07 +0100)
commite428e8ce3a008852e56e25c2fab4bc14c9f16915
tree5dc96f0d3d96099a409adaaac25048801f4d5b02
parent6e95c4f921770c62b4c7f88b2b9da7bccaa6514e
net_sched: red: Avoid devision by zero

[ Upstream commit 5c472203421ab4f928aa1ae9e1dbcfdd80324148 ]

Do not allow delta value to be zero since it is used as a divisor.

Fixes: 8af2a218de38 ("sch_red: Adaptative RED AQM")
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
include/net/red.h