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 <[EMAIL PROTECTED]>
--- a/net/sched/sch_sfq.c 2008-01-17 09:00:58.000000000 -0800
+++ b/net/sched/sch_sfq.c 2008-01-17 09:03:26.000000000 -0800
@@ -386,7 +386,7 @@ static void sfq_perturbation(unsigned lo
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 @@ static int sfq_change(struct Qdisc *sch,
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 @@ static int sfq_init(struct Qdisc *sch, s
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)
--
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