Merge branch 'linux-2.6'

1 files changed, 48 insertions, 29 deletions

diff --git a/net/sched/sch_gred.c b/net/sched/sch_gred.c
index 3cc6dda02e2..3a9d226ff1e 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,