#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
-#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/pkt_sched.h>
#include <net/red.h>
* if no default DP has been configured. This
* allows for DP flows to be left untouched.
*/
- if (skb_queue_len(&sch->q) < sch->dev->tx_queue_len)
+ if (skb_queue_len(&sch->q) < qdisc_dev(sch)->tx_queue_len)
return qdisc_enqueue_tail(skb, sch);
else
goto drop;
}
q->packetsin++;
- q->bytesin += skb->len;
+ q->bytesin += qdisc_pkt_len(skb);
if (gred_wred_mode(t))
gred_load_wred_set(t, q);
break;
}
- if (q->backlog + skb->len <= q->limit) {
- q->backlog += skb->len;
+ if (q->backlog + qdisc_pkt_len(skb) <= q->limit) {
+ q->backlog += qdisc_pkt_len(skb);
return qdisc_enqueue_tail(skb, sch);
}
return NET_XMIT_CN;
}
-static int gred_requeue(struct sk_buff *skb, struct Qdisc* sch)
-{
- struct gred_sched *t = qdisc_priv(sch);
- struct gred_sched_data *q;
- u16 dp = tc_index_to_dp(skb);
-
- if (dp >= t->DPs || (q = t->tab[dp]) == NULL) {
- if (net_ratelimit())
- printk(KERN_WARNING "GRED: Unable to relocate VQ 0x%x "
- "for requeue, screwing up backlog.\n",
- tc_index_to_dp(skb));
- } else {
- if (red_is_idling(&q->parms))
- red_end_of_idle_period(&q->parms);
- q->backlog += skb->len;
- }
-
- return qdisc_requeue(skb, sch);
-}
-
static struct sk_buff *gred_dequeue(struct Qdisc* sch)
{
struct sk_buff *skb;
"VQ 0x%x after dequeue, screwing up "
"backlog.\n", tc_index_to_dp(skb));
} else {
- q->backlog -= skb->len;
+ q->backlog -= qdisc_pkt_len(skb);
if (!q->backlog && !gred_wred_mode(t))
red_start_of_idle_period(&q->parms);
skb = qdisc_dequeue_tail(sch);
if (skb) {
- unsigned int len = skb->len;
+ unsigned int len = qdisc_pkt_len(skb);
struct gred_sched_data *q;
u16 dp = tc_index_to_dp(skb);
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;
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;
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,
.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];
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:
+ nla_nest_cancel(skb, opts);
+ return -EMSGSIZE;
}
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,
.dequeue = gred_dequeue,
- .requeue = gred_requeue,
+ .peek = qdisc_peek_head,
.drop = gred_drop,
.init = gred_init,
.reset = gred_reset,
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff