| From: Nogah Frankel <nogahf@mellanox.com> |
| Date: Mon, 4 Dec 2017 13:31:10 +0200 |
| Subject: net_sched: red: Avoid devision by zero |
| |
| commit 5c472203421ab4f928aa1ae9e1dbcfdd80324148 upstream. |
| |
| 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: Ben Hutchings <ben@decadent.org.uk> |
| --- |
| include/net/red.h | 2 +- |
| 1 file changed, 1 insertion(+), 1 deletion(-) |
| |
| --- a/include/net/red.h |
| +++ b/include/net/red.h |
| @@ -178,7 +178,7 @@ static inline void red_set_parms(struct |
| p->qth_max = qth_max << Wlog; |
| p->Wlog = Wlog; |
| p->Plog = Plog; |
| - if (delta < 0) |
| + if (delta <= 0) |
| delta = 1; |
| p->qth_delta = delta; |
| if (!max_P) { |
