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Diffstat (limited to 'net/sched/sch_gred.c')
-rw-r--r--net/sched/sch_gred.c77
1 files changed, 48 insertions, 29 deletions
diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
index 3cc6dda02e2e..3a9d226ff1e4 100644
--- a/net/sched/sch_gred.c
+++ b/net/sched/sch_gred.c
@@ -350,16 +350,16 @@ static inline void gred_destroy_vq(struct gred_sched_data *q)
kfree(q);
}
-static inline int gred_change_table_def(struct Qdisc *sch, struct rtattr *dps)
+static inline int gred_change_table_def(struct Qdisc *sch, struct nlattr *dps)
{
struct gred_sched *table = qdisc_priv(sch);
struct tc_gred_sopt *sopt;
int i;
- if (dps == NULL || RTA_PAYLOAD(dps) < sizeof(*sopt))
+ if (dps == NULL)
return -EINVAL;
- sopt = RTA_DATA(dps);
+ sopt = nla_data(dps);
if (sopt->DPs > MAX_DPs || sopt->DPs == 0 || sopt->def_DP >= sopt->DPs)
return -EINVAL;
@@ -425,28 +425,37 @@ static inline int gred_change_vq(struct Qdisc *sch, int dp,
return 0;
}
-static int gred_change(struct Qdisc *sch, struct rtattr *opt)
+static const struct nla_policy gred_policy[TCA_GRED_MAX + 1] = {
+ [TCA_GRED_PARMS] = { .len = sizeof(struct tc_gred_qopt) },
+ [TCA_GRED_STAB] = { .len = 256 },
+ [TCA_GRED_DPS] = { .len = sizeof(struct tc_gred_sopt) },
+};
+
+static int gred_change(struct Qdisc *sch, struct nlattr *opt)
{
struct gred_sched *table = qdisc_priv(sch);
struct tc_gred_qopt *ctl;
- struct rtattr *tb[TCA_GRED_MAX];
- int err = -EINVAL, prio = GRED_DEF_PRIO;
+ struct nlattr *tb[TCA_GRED_MAX + 1];
+ int err, prio = GRED_DEF_PRIO;
u8 *stab;
- if (opt == NULL || rtattr_parse_nested(tb, TCA_GRED_MAX, opt))
+ if (opt == NULL)
return -EINVAL;
- if (tb[TCA_GRED_PARMS-1] == NULL && tb[TCA_GRED_STAB-1] == NULL)
+ err = nla_parse_nested(tb, TCA_GRED_MAX, opt, gred_policy);
+ if (err < 0)
+ return err;
+
+ if (tb[TCA_GRED_PARMS] == NULL && tb[TCA_GRED_STAB] == NULL)
return gred_change_table_def(sch, opt);
- if (tb[TCA_GRED_PARMS-1] == NULL ||
- RTA_PAYLOAD(tb[TCA_GRED_PARMS-1]) < sizeof(*ctl) ||
- tb[TCA_GRED_STAB-1] == NULL ||
- RTA_PAYLOAD(tb[TCA_GRED_STAB-1]) < 256)
+ if (tb[TCA_GRED_PARMS] == NULL ||
+ tb[TCA_GRED_STAB] == NULL)
return -EINVAL;
- ctl = RTA_DATA(tb[TCA_GRED_PARMS-1]);
- stab = RTA_DATA(tb[TCA_GRED_STAB-1]);
+ err = -EINVAL;
+ ctl = nla_data(tb[TCA_GRED_PARMS]);
+ stab = nla_data(tb[TCA_GRED_STAB]);
if (ctl->DP >= table->DPs)
goto errout;
@@ -486,23 +495,28 @@ errout:
return err;
}
-static int gred_init(struct Qdisc *sch, struct rtattr *opt)
+static int gred_init(struct Qdisc *sch, struct nlattr *opt)
{
- struct rtattr *tb[TCA_GRED_MAX];
+ struct nlattr *tb[TCA_GRED_MAX + 1];
+ int err;
- if (opt == NULL || rtattr_parse_nested(tb, TCA_GRED_MAX, opt))
+ if (opt == NULL)
return -EINVAL;
- if (tb[TCA_GRED_PARMS-1] || tb[TCA_GRED_STAB-1])
+ err = nla_parse_nested(tb, TCA_GRED_MAX, opt, gred_policy);
+ if (err < 0)
+ return err;
+
+ if (tb[TCA_GRED_PARMS] || tb[TCA_GRED_STAB])
return -EINVAL;
- return gred_change_table_def(sch, tb[TCA_GRED_DPS-1]);
+ return gred_change_table_def(sch, tb[TCA_GRED_DPS]);
}
static int gred_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct gred_sched *table = qdisc_priv(sch);
- struct rtattr *parms, *opts = NULL;
+ struct nlattr *parms, *opts = NULL;
int i;
struct tc_gred_sopt sopt = {
.DPs = table->DPs,
@@ -511,9 +525,13 @@ static int gred_dump(struct Qdisc *sch, struct sk_buff *skb)
.flags = table->red_flags,
};
- opts = RTA_NEST(skb, TCA_OPTIONS);
- RTA_PUT(skb, TCA_GRED_DPS, sizeof(sopt), &sopt);
- parms = RTA_NEST(skb, TCA_GRED_PARMS);
+ opts = nla_nest_start(skb, TCA_OPTIONS);
+ if (opts == NULL)
+ goto nla_put_failure;
+ NLA_PUT(skb, TCA_GRED_DPS, sizeof(sopt), &sopt);
+ parms = nla_nest_start(skb, TCA_GRED_PARMS);
+ if (parms == NULL)
+ goto nla_put_failure;
for (i = 0; i < MAX_DPs; i++) {
struct gred_sched_data *q = table->tab[i];
@@ -555,15 +573,16 @@ static int gred_dump(struct Qdisc *sch, struct sk_buff *skb)
opt.qave = red_calc_qavg(&q->parms, q->parms.qavg);
append_opt:
- RTA_APPEND(skb, sizeof(opt), &opt);
+ if (nla_append(skb, sizeof(opt), &opt) < 0)
+ goto nla_put_failure;
}
- RTA_NEST_END(skb, parms);
+ nla_nest_end(skb, parms);
- return RTA_NEST_END(skb, opts);
+ return nla_nest_end(skb, opts);
-rtattr_failure:
- return RTA_NEST_CANCEL(skb, opts);
+nla_put_failure:
+ return nla_nest_cancel(skb, opts);
}
static void gred_destroy(struct Qdisc *sch)
@@ -577,7 +596,7 @@ static void gred_destroy(struct Qdisc *sch)
}
}
-static struct Qdisc_ops gred_qdisc_ops = {
+static struct Qdisc_ops gred_qdisc_ops __read_mostly = {
.id = "gred",
.priv_size = sizeof(struct gred_sched),
.enqueue = gred_enqueue,