break;
}
- ret = child->enqueue(skb, child);
+ ret = qdisc_enqueue(skb, child);
if (likely(ret == NET_XMIT_SUCCESS)) {
- sch->bstats.bytes += skb->len;
+ sch->bstats.bytes += qdisc_pkt_len(skb);
sch->bstats.packets++;
sch->q.qlen++;
- } else {
+ } else if (net_xmit_drop_count(ret)) {
q->stats.pdrop++;
sch->qstats.drops++;
}
return NET_XMIT_CN;
}
-static int red_requeue(struct sk_buff *skb, struct Qdisc* sch)
-{
- struct red_sched_data *q = qdisc_priv(sch);
- struct Qdisc *child = q->qdisc;
- int ret;
-
- if (red_is_idling(&q->parms))
- red_end_of_idle_period(&q->parms);
-
- ret = child->ops->requeue(skb, child);
- if (likely(ret == NET_XMIT_SUCCESS)) {
- sch->qstats.requeues++;
- sch->q.qlen++;
- }
- return ret;
-}
-
static struct sk_buff * red_dequeue(struct Qdisc* sch)
{
struct sk_buff *skb;
return skb;
}
+static struct sk_buff * red_peek(struct Qdisc* sch)
+{
+ struct red_sched_data *q = qdisc_priv(sch);
+ struct Qdisc *child = q->qdisc;
+
+ return child->ops->peek(child);
+}
+
static unsigned int red_drop(struct Qdisc* sch)
{
struct red_sched_data *q = qdisc_priv(sch);
qdisc_destroy(q->qdisc);
}
-static struct Qdisc *red_create_dflt(struct Qdisc *sch, u32 limit)
-{
- struct Qdisc *q;
- struct rtattr *rta;
- int ret;
-
- q = qdisc_create_dflt(sch->dev, &bfifo_qdisc_ops,
- TC_H_MAKE(sch->handle, 1));
- if (q) {
- rta = kmalloc(RTA_LENGTH(sizeof(struct tc_fifo_qopt)),
- GFP_KERNEL);
- if (rta) {
- rta->rta_type = RTM_NEWQDISC;
- rta->rta_len = RTA_LENGTH(sizeof(struct tc_fifo_qopt));
- ((struct tc_fifo_qopt *)RTA_DATA(rta))->limit = limit;
-
- ret = q->ops->change(q, rta);
- kfree(rta);
-
- if (ret == 0)
- return q;
- }
- qdisc_destroy(q);
- }
- return NULL;
-}
+static const struct nla_policy red_policy[TCA_RED_MAX + 1] = {
+ [TCA_RED_PARMS] = { .len = sizeof(struct tc_red_qopt) },
+ [TCA_RED_STAB] = { .len = RED_STAB_SIZE },
+};
-static int red_change(struct Qdisc *sch, struct rtattr *opt)
+static int red_change(struct Qdisc *sch, struct nlattr *opt)
{
struct red_sched_data *q = qdisc_priv(sch);
- struct rtattr *tb[TCA_RED_MAX];
+ struct nlattr *tb[TCA_RED_MAX + 1];
struct tc_red_qopt *ctl;
struct Qdisc *child = NULL;
+ int err;
- if (opt == NULL || rtattr_parse_nested(tb, TCA_RED_MAX, opt))
+ if (opt == NULL)
return -EINVAL;
- if (tb[TCA_RED_PARMS-1] == NULL ||
- RTA_PAYLOAD(tb[TCA_RED_PARMS-1]) < sizeof(*ctl) ||
- tb[TCA_RED_STAB-1] == NULL ||
- RTA_PAYLOAD(tb[TCA_RED_STAB-1]) < RED_STAB_SIZE)
+ err = nla_parse_nested(tb, TCA_RED_MAX, opt, red_policy);
+ if (err < 0)
+ return err;
+
+ if (tb[TCA_RED_PARMS] == NULL ||
+ tb[TCA_RED_STAB] == NULL)
return -EINVAL;
- ctl = RTA_DATA(tb[TCA_RED_PARMS-1]);
+ ctl = nla_data(tb[TCA_RED_PARMS]);
if (ctl->limit > 0) {
- child = red_create_dflt(sch, ctl->limit);
- if (child == NULL)
- return -ENOMEM;
+ child = fifo_create_dflt(sch, &bfifo_qdisc_ops, ctl->limit);
+ if (IS_ERR(child))
+ return PTR_ERR(child);
}
sch_tree_lock(sch);
q->limit = ctl->limit;
if (child) {
qdisc_tree_decrease_qlen(q->qdisc, q->qdisc->q.qlen);
- qdisc_destroy(xchg(&q->qdisc, child));
+ qdisc_destroy(q->qdisc);
+ q->qdisc = child;
}
red_set_parms(&q->parms, ctl->qth_min, ctl->qth_max, ctl->Wlog,
ctl->Plog, ctl->Scell_log,
- RTA_DATA(tb[TCA_RED_STAB-1]));
+ nla_data(tb[TCA_RED_STAB]));
if (skb_queue_empty(&sch->q))
red_end_of_idle_period(&q->parms);
return 0;
}
-static int red_init(struct Qdisc* sch, struct rtattr *opt)
+static int red_init(struct Qdisc* sch, struct nlattr *opt)
{
struct red_sched_data *q = qdisc_priv(sch);
static int red_dump(struct Qdisc *sch, struct sk_buff *skb)
{
struct red_sched_data *q = qdisc_priv(sch);
- struct rtattr *opts = NULL;
+ struct nlattr *opts = NULL;
struct tc_red_qopt opt = {
.limit = q->limit,
.flags = q->flags,
.Scell_log = q->parms.Scell_log,
};
- opts = RTA_NEST(skb, TCA_OPTIONS);
- RTA_PUT(skb, TCA_RED_PARMS, sizeof(opt), &opt);
- return RTA_NEST_END(skb, opts);
+ opts = nla_nest_start(skb, TCA_OPTIONS);
+ if (opts == NULL)
+ goto nla_put_failure;
+ NLA_PUT(skb, TCA_RED_PARMS, sizeof(opt), &opt);
+ return nla_nest_end(skb, opts);
-rtattr_failure:
- return RTA_NEST_CANCEL(skb, opts);
+nla_put_failure:
+ nla_nest_cancel(skb, opts);
+ return -EMSGSIZE;
}
static int red_dump_stats(struct Qdisc *sch, struct gnet_dump *d)
{
struct red_sched_data *q = qdisc_priv(sch);
- if (cl != 1)
- return -ENOENT;
tcm->tcm_handle |= TC_H_MIN(1);
tcm->tcm_info = q->qdisc->handle;
return 0;
new = &noop_qdisc;
sch_tree_lock(sch);
- *old = xchg(&q->qdisc, new);
+ *old = q->qdisc;
+ q->qdisc = new;
qdisc_tree_decrease_qlen(*old, (*old)->q.qlen);
qdisc_reset(*old);
sch_tree_unlock(sch);
static void red_put(struct Qdisc *sch, unsigned long arg)
{
- return;
-}
-
-static int red_change_class(struct Qdisc *sch, u32 classid, u32 parentid,
- struct rtattr **tca, unsigned long *arg)
-{
- return -ENOSYS;
-}
-
-static int red_delete(struct Qdisc *sch, unsigned long cl)
-{
- return -ENOSYS;
}
static void red_walk(struct Qdisc *sch, struct qdisc_walker *walker)
}
}
-static struct tcf_proto **red_find_tcf(struct Qdisc *sch, unsigned long cl)
-{
- return NULL;
-}
-
-static struct Qdisc_class_ops red_class_ops = {
+static const struct Qdisc_class_ops red_class_ops = {
.graft = red_graft,
.leaf = red_leaf,
.get = red_get,
.put = red_put,
- .change = red_change_class,
- .delete = red_delete,
.walk = red_walk,
- .tcf_chain = red_find_tcf,
.dump = red_dump_class,
};
-static struct Qdisc_ops red_qdisc_ops = {
+static struct Qdisc_ops red_qdisc_ops __read_mostly = {
.id = "red",
.priv_size = sizeof(struct red_sched_data),
.cl_ops = &red_class_ops,
.enqueue = red_enqueue,
.dequeue = red_dequeue,
- .requeue = red_requeue,
+ .peek = red_peek,
.drop = red_drop,
.init = red_init,
.reset = red_reset,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff