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[NET_SCHED]: Use nla_policy for attribute validation in packet schedulers

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Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2008-01-23 20:35:39 -08:00
committed by David S. Miller
parent 5feb5e1aaa
commit 27a3421e48
9 changed files with 87 additions and 93 deletions
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19
net/sched/sch_netem.c
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@@ -368,9 +368,6 @@ static int get_correlation(struct Qdisc *sch, const struct nlattr *attr)
struct netem_sched_data *q = qdisc_priv(sch);
const struct tc_netem_corr *c = nla_data(attr);
if (nla_len(attr) != sizeof(*c))
return -EINVAL;
init_crandom(&q->delay_cor, c->delay_corr);
init_crandom(&q->loss_cor, c->loss_corr);
init_crandom(&q->dup_cor, c->dup_corr);
@@ -382,9 +379,6 @@ static int get_reorder(struct Qdisc *sch, const struct nlattr *attr)
struct netem_sched_data *q = qdisc_priv(sch);
const struct tc_netem_reorder *r = nla_data(attr);
if (nla_len(attr) != sizeof(*r))
return -EINVAL;
q->reorder = r->probability;
init_crandom(&q->reorder_cor, r->correlation);
return 0;
@@ -395,14 +389,17 @@ static int get_corrupt(struct Qdisc *sch, const struct nlattr *attr)
struct netem_sched_data *q = qdisc_priv(sch);
const struct tc_netem_corrupt *r = nla_data(attr);
if (nla_len(attr) != sizeof(*r))
return -EINVAL;
q->corrupt = r->probability;
init_crandom(&q->corrupt_cor, r->correlation);
return 0;
}
static const struct nla_policy netem_policy[TCA_NETEM_MAX + 1] = {
[TCA_NETEM_CORR] = { .len = sizeof(struct tc_netem_corr) },
[TCA_NETEM_REORDER] = { .len = sizeof(struct tc_netem_reorder) },
[TCA_NETEM_CORRUPT] = { .len = sizeof(struct tc_netem_corrupt) },
};
/* Parse netlink message to set options */
static int netem_change(struct Qdisc *sch, struct nlattr *opt)
{
@@ -414,8 +411,8 @@ static int netem_change(struct Qdisc *sch, struct nlattr *opt)
if (opt == NULL)
return -EINVAL;
ret = nla_parse_nested_compat(tb, TCA_NETEM_MAX, opt, NULL, qopt,
sizeof(*qopt));
ret = nla_parse_nested_compat(tb, TCA_NETEM_MAX, opt, netem_policy,
qopt, sizeof(*qopt));
if (ret < 0)
return ret;