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authorLeslie Monis <lesliemonis@gmail.com>2020-03-09 22:10:33 +0300
committerDavid S. Miller <davem@davemloft.net>2020-03-10 04:05:55 +0300
commit3f95f55eb55daa17c047d731d1fb7854e5823478 (patch)
tree650f303eab2d10a41f2dba22a8a49a4eb8b5e503 /net/sched/sch_pie.c
parente08ab0b377a1489760533424437c5f4be7f484a4 (diff)
downloadlinux-3f95f55eb55daa17c047d731d1fb7854e5823478.tar.xz
net: sched: pie: change tc_pie_xstats->prob
Commit 105e808c1da2 ("pie: remove pie_vars->accu_prob_overflows") changes the scale of probability values in PIE from (2^64 - 1) to (2^56 - 1). This affects the precision of tc_pie_xstats->prob in user space. This patch ensures user space is unaffected. Suggested-by: Eric Dumazet <edumazet@google.com> Signed-off-by: Leslie Monis <lesliemonis@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_pie.c')
-rw-r--r--net/sched/sch_pie.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sched/sch_pie.c b/net/sched/sch_pie.c
index f52442d39bf5..c65077f0c0f3 100644
--- a/net/sched/sch_pie.c
+++ b/net/sched/sch_pie.c
@@ -493,7 +493,7 @@ static int pie_dump_stats(struct Qdisc *sch, struct gnet_dump *d)
{
struct pie_sched_data *q = qdisc_priv(sch);
struct tc_pie_xstats st = {
- .prob = q->vars.prob,
+ .prob = q->vars.prob << BITS_PER_BYTE,
.delay = ((u32)PSCHED_TICKS2NS(q->vars.qdelay)) /
NSEC_PER_USEC,
.packets_in = q->stats.packets_in,