X-Git-Url: http://pilppa.org/gitweb/?a=blobdiff_plain;f=net%2Fsched%2Fsch_fifo.c;h=23d258bfe8ace223e07d0c23dc62fbe7e0ae9faa;hb=80bba1290ab5122c60cdb73332b26d288dc8aedd;hp=c264308f17c1f66f6f7e6c61ca309fa5378f5645;hpb=2d896c780db9cda5dc102bf7a0a2cd4394c1342e;p=linux-2.6-omap-h63xx.git

diff --git a/net/sched/sch_fifo.c b/net/sched/sch_fifo.c
index c264308f17c..23d258bfe8a 100644
--- a/net/sched/sch_fifo.c
+++ b/net/sched/sch_fifo.c
@@ -27,7 +27,7 @@ static int bfifo_enqueue(struct sk_buff *skb, struct Qdisc* sch)
 {
 	struct fifo_sched_data *q = qdisc_priv(sch);
 
-	if (likely(sch->qstats.backlog + skb->len <= q->limit))
+	if (likely(sch->qstats.backlog + qdisc_pkt_len(skb) <= q->limit))
 		return qdisc_enqueue_tail(skb, sch);
 
 	return qdisc_reshape_fail(skb, sch);
@@ -43,21 +43,21 @@ static int pfifo_enqueue(struct sk_buff *skb, struct Qdisc* sch)
 	return qdisc_reshape_fail(skb, sch);
 }
 
-static int fifo_init(struct Qdisc *sch, struct rtattr *opt)
+static int fifo_init(struct Qdisc *sch, struct nlattr *opt)
 {
 	struct fifo_sched_data *q = qdisc_priv(sch);
 
 	if (opt == NULL) {
-		u32 limit = sch->dev->tx_queue_len ? : 1;
+		u32 limit = qdisc_dev(sch)->tx_queue_len ? : 1;
 
 		if (sch->ops == &bfifo_qdisc_ops)
-			limit *= sch->dev->mtu;
+			limit *= qdisc_dev(sch)->mtu;
 
 		q->limit = limit;
 	} else {
-		struct tc_fifo_qopt *ctl = RTA_DATA(opt);
+		struct tc_fifo_qopt *ctl = nla_data(opt);
 
-		if (RTA_PAYLOAD(opt) < sizeof(*ctl))
+		if (nla_len(opt) < sizeof(*ctl))
 			return -EINVAL;
 
 		q->limit = ctl->limit;
@@ -71,14 +71,14 @@ static int fifo_dump(struct Qdisc *sch, struct sk_buff *skb)
 	struct fifo_sched_data *q = qdisc_priv(sch);
 	struct tc_fifo_qopt opt = { .limit = q->limit };
 
-	RTA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
+	NLA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
 	return skb->len;
 
-rtattr_failure:
+nla_put_failure:
 	return -1;
 }
 
-struct Qdisc_ops pfifo_qdisc_ops = {
+struct Qdisc_ops pfifo_qdisc_ops __read_mostly = {
 	.id		=	"pfifo",
 	.priv_size	=	sizeof(struct fifo_sched_data),
 	.enqueue	=	pfifo_enqueue,
@@ -91,8 +91,9 @@ struct Qdisc_ops pfifo_qdisc_ops = {
 	.dump		=	fifo_dump,
 	.owner		=	THIS_MODULE,
 };
+EXPORT_SYMBOL(pfifo_qdisc_ops);
 
-struct Qdisc_ops bfifo_qdisc_ops = {
+struct Qdisc_ops bfifo_qdisc_ops __read_mostly = {
 	.id		=	"bfifo",
 	.priv_size	=	sizeof(struct fifo_sched_data),
 	.enqueue	=	bfifo_enqueue,
@@ -105,6 +106,47 @@ struct Qdisc_ops bfifo_qdisc_ops = {
 	.dump		=	fifo_dump,
 	.owner		=	THIS_MODULE,
 };
-
 EXPORT_SYMBOL(bfifo_qdisc_ops);
-EXPORT_SYMBOL(pfifo_qdisc_ops);
+
+/* Pass size change message down to embedded FIFO */
+int fifo_set_limit(struct Qdisc *q, unsigned int limit)
+{
+	struct nlattr *nla;
+	int ret = -ENOMEM;
+
+	/* Hack to avoid sending change message to non-FIFO */
+	if (strncmp(q->ops->id + 1, "fifo", 4) != 0)
+		return 0;
+
+	nla = kmalloc(nla_attr_size(sizeof(struct tc_fifo_qopt)), GFP_KERNEL);
+	if (nla) {
+		nla->nla_type = RTM_NEWQDISC;
+		nla->nla_len = nla_attr_size(sizeof(struct tc_fifo_qopt));
+		((struct tc_fifo_qopt *)nla_data(nla))->limit = limit;
+
+		ret = q->ops->change(q, nla);
+		kfree(nla);
+	}
+	return ret;
+}
+EXPORT_SYMBOL(fifo_set_limit);
+
+struct Qdisc *fifo_create_dflt(struct Qdisc *sch, struct Qdisc_ops *ops,
+			       unsigned int limit)
+{
+	struct Qdisc *q;
+	int err = -ENOMEM;
+
+	q = qdisc_create_dflt(qdisc_dev(sch), sch->dev_queue,
+			      ops, TC_H_MAKE(sch->handle, 1));
+	if (q) {
+		err = fifo_set_limit(q, limit);
+		if (err < 0) {
+			qdisc_destroy(q);
+			q = NULL;
+		}
+	}
+
+	return q ? : ERR_PTR(err);
+}
+EXPORT_SYMBOL(fifo_create_dflt);