[PKT_SCHED] SFQ: use net_random
SFQ doesn't need true random numbers, it is only using them to salt a
hash. Therefore it is better to use net_random() and avoid any
possible problems with depleting the entropy pool.
Signed-off-by: Stephen Hemminger <stephen.hemminger@vyatta.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/sched/sch_sfq.c b/net/sched/sch_sfq.c
index ba3a85e..4179758 100644
--- a/net/sched/sch_sfq.c
+++ b/net/sched/sch_sfq.c
@@ -386,7 +386,7 @@
struct Qdisc *sch = (struct Qdisc*)arg;
struct sfq_sched_data *q = qdisc_priv(sch);
- get_random_bytes(&q->perturbation, 4);
+ q->perturbation = net_random();
if (q->perturb_period)
mod_timer(&q->perturb_timer, jiffies + q->perturb_period);
@@ -415,7 +415,7 @@
del_timer(&q->perturb_timer);
if (q->perturb_period) {
mod_timer(&q->perturb_timer, jiffies + q->perturb_period);
- get_random_bytes(&q->perturbation, 4);
+ q->perturbation = net_random();
}
sch_tree_unlock(sch);
return 0;
@@ -443,7 +443,7 @@
if (opt == NULL) {
q->quantum = psched_mtu(sch->dev);
q->perturb_period = 0;
- get_random_bytes(&q->perturbation, 4);
+ q->perturbation = net_random();
} else {
int err = sfq_change(sch, opt);
if (err)