#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/errno.h>
-#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/pkt_sched.h>
{
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);
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 *= psched_mtu(qdisc_dev(sch));
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;
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,
.dequeue = qdisc_dequeue_head,
- .requeue = qdisc_requeue,
+ .peek = qdisc_peek_head,
.drop = qdisc_queue_drop,
.init = fifo_init,
.reset = qdisc_reset_queue,
.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,
.dequeue = qdisc_dequeue_head,
- .requeue = qdisc_requeue,
+ .peek = qdisc_peek_head,
.drop = qdisc_queue_drop,
.init = fifo_init,
.reset = qdisc_reset_queue,
.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);