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Diffstat (limited to 'net/sched/sch_htb.c')
-rw-r--r--net/sched/sch_htb.c126
1 files changed, 35 insertions, 91 deletions
diff --git a/net/sched/sch_htb.c b/net/sched/sch_htb.c
index 035788c5b7f8..246a2f9765f1 100644
--- a/net/sched/sch_htb.c
+++ b/net/sched/sch_htb.c
@@ -28,32 +28,16 @@
* $Id: sch_htb.c,v 1.25 2003/12/07 11:08:25 devik Exp devik $
*/
#include <linux/module.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-#include <linux/bitops.h>
#include <linux/types.h>
#include <linux/kernel.h>
#include <linux/string.h>
-#include <linux/mm.h>
-#include <linux/socket.h>
-#include <linux/sockios.h>
-#include <linux/in.h>
#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/if_ether.h>
-#include <linux/inet.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/notifier.h>
-#include <net/ip.h>
-#include <net/route.h>
#include <linux/skbuff.h>
#include <linux/list.h>
#include <linux/compiler.h>
+#include <linux/rbtree.h>
#include <net/netlink.h>
-#include <net/sock.h>
#include <net/pkt_sched.h>
-#include <linux/rbtree.h>
/* HTB algorithm.
Author: devik@cdi.cz
@@ -69,8 +53,6 @@
*/
#define HTB_HSIZE 16 /* classid hash size */
-#define HTB_EWMAC 2 /* rate average over HTB_EWMAC*HTB_HSIZE sec */
-#define HTB_RATECM 1 /* whether to use rate computer */
#define HTB_HYSTERESIS 1 /* whether to use mode hysteresis for speedup */
#define HTB_VER 0x30011 /* major must be matched with number suplied by TC as version */
@@ -95,12 +77,6 @@ struct htb_class {
struct tc_htb_xstats xstats; /* our special stats */
int refcnt; /* usage count of this class */
-#ifdef HTB_RATECM
- /* rate measurement counters */
- unsigned long rate_bytes, sum_bytes;
- unsigned long rate_packets, sum_packets;
-#endif
-
/* topology */
int level; /* our level (see above) */
struct htb_class *parent; /* parent class */
@@ -153,15 +129,12 @@ struct htb_class {
/* of un.leaf originals should be done. */
};
-/* TODO: maybe compute rate when size is too large .. or drop ? */
static inline long L2T(struct htb_class *cl, struct qdisc_rate_table *rate,
int size)
{
int slot = size >> rate->rate.cell_log;
- if (slot > 255) {
- cl->xstats.giants++;
- slot = 255;
- }
+ if (slot > 255)
+ return (rate->data[255]*(slot >> 8) + rate->data[slot & 0xFF]);
return rate->data[slot];
}
@@ -194,10 +167,6 @@ struct htb_sched {
int rate2quantum; /* quant = rate / rate2quantum */
psched_time_t now; /* cached dequeue time */
struct qdisc_watchdog watchdog;
-#ifdef HTB_RATECM
- struct timer_list rttim; /* rate computer timer */
- int recmp_bucket; /* which hash bucket to recompute next */
-#endif
/* non shaped skbs; let them go directly thru */
struct sk_buff_head direct_queue;
@@ -280,9 +249,6 @@ static struct htb_class *htb_classify(struct sk_buff *skb, struct Qdisc *sch,
case TC_ACT_SHOT:
return NULL;
}
-#elif defined(CONFIG_NET_CLS_POLICE)
- if (result == TC_POLICE_SHOT)
- return HTB_DIRECT;
#endif
if ((cl = (void *)res.class) == NULL) {
if (res.classid == sch->handle)
@@ -634,13 +600,14 @@ static int htb_enqueue(struct sk_buff *skb, struct Qdisc *sch)
cl->qstats.drops++;
return NET_XMIT_DROP;
} else {
- cl->bstats.packets++;
+ cl->bstats.packets +=
+ skb_is_gso(skb)?skb_shinfo(skb)->gso_segs:1;
cl->bstats.bytes += skb->len;
htb_activate(q, cl);
}
sch->q.qlen++;
- sch->bstats.packets++;
+ sch->bstats.packets += skb_is_gso(skb)?skb_shinfo(skb)->gso_segs:1;
sch->bstats.bytes += skb->len;
return NET_XMIT_SUCCESS;
}
@@ -677,34 +644,6 @@ static int htb_requeue(struct sk_buff *skb, struct Qdisc *sch)
return NET_XMIT_SUCCESS;
}
-#ifdef HTB_RATECM
-#define RT_GEN(D,R) R+=D-(R/HTB_EWMAC);D=0
-static void htb_rate_timer(unsigned long arg)
-{
- struct Qdisc *sch = (struct Qdisc *)arg;
- struct htb_sched *q = qdisc_priv(sch);
- struct hlist_node *p;
- struct htb_class *cl;
-
-
- /* lock queue so that we can muck with it */
- spin_lock_bh(&sch->dev->queue_lock);
-
- q->rttim.expires = jiffies + HZ;
- add_timer(&q->rttim);
-
- /* scan and recompute one bucket at time */
- if (++q->recmp_bucket >= HTB_HSIZE)
- q->recmp_bucket = 0;
-
- hlist_for_each_entry(cl,p, q->hash + q->recmp_bucket, hlist) {
- RT_GEN(cl->sum_bytes, cl->rate_bytes);
- RT_GEN(cl->sum_packets, cl->rate_packets);
- }
- spin_unlock_bh(&sch->dev->queue_lock);
-}
-#endif
-
/**
* htb_charge_class - charges amount "bytes" to leaf and ancestors
*
@@ -717,8 +656,9 @@ static void htb_rate_timer(unsigned long arg)
* In such case we remove class from event queue first.
*/
static void htb_charge_class(struct htb_sched *q, struct htb_class *cl,
- int level, int bytes)
+ int level, struct sk_buff *skb)
{
+ int bytes = skb->len;
long toks, diff;
enum htb_cmode old_mode;
@@ -750,16 +690,12 @@ static void htb_charge_class(struct htb_sched *q, struct htb_class *cl,
if (cl->cmode != HTB_CAN_SEND)
htb_add_to_wait_tree(q, cl, diff);
}
-#ifdef HTB_RATECM
- /* update rate counters */
- cl->sum_bytes += bytes;
- cl->sum_packets++;
-#endif
/* update byte stats except for leaves which are already updated */
if (cl->level) {
cl->bstats.bytes += bytes;
- cl->bstats.packets++;
+ cl->bstats.packets += skb_is_gso(skb)?
+ skb_shinfo(skb)->gso_segs:1;
}
cl = cl->parent;
}
@@ -943,7 +879,7 @@ next:
gives us slightly better performance */
if (!cl->un.leaf.q->q.qlen)
htb_deactivate(q, cl);
- htb_charge_class(q, cl, level, skb->len);
+ htb_charge_class(q, cl, level, skb);
}
return skb;
}
@@ -1095,13 +1031,6 @@ static int htb_init(struct Qdisc *sch, struct rtattr *opt)
if (q->direct_qlen < 2) /* some devices have zero tx_queue_len */
q->direct_qlen = 2;
-#ifdef HTB_RATECM
- init_timer(&q->rttim);
- q->rttim.function = htb_rate_timer;
- q->rttim.data = (unsigned long)sch;
- q->rttim.expires = jiffies + HZ;
- add_timer(&q->rttim);
-#endif
if ((q->rate2quantum = gopt->rate2quantum) < 1)
q->rate2quantum = 1;
q->defcls = gopt->defcls;
@@ -1175,11 +1104,6 @@ htb_dump_class_stats(struct Qdisc *sch, unsigned long arg, struct gnet_dump *d)
{
struct htb_class *cl = (struct htb_class *)arg;
-#ifdef HTB_RATECM
- cl->rate_est.bps = cl->rate_bytes / (HTB_EWMAC * HTB_HSIZE);
- cl->rate_est.pps = cl->rate_packets / (HTB_EWMAC * HTB_HSIZE);
-#endif
-
if (!cl->level && cl->un.leaf.q)
cl->qstats.qlen = cl->un.leaf.q->q.qlen;
cl->xstats.tokens = cl->tokens;
@@ -1277,6 +1201,7 @@ static void htb_destroy_class(struct Qdisc *sch, struct htb_class *cl)
BUG_TRAP(cl->un.leaf.q);
qdisc_destroy(cl->un.leaf.q);
}
+ gen_kill_estimator(&cl->bstats, &cl->rate_est);
qdisc_put_rtab(cl->rate);
qdisc_put_rtab(cl->ceil);
@@ -1305,9 +1230,6 @@ static void htb_destroy(struct Qdisc *sch)
struct htb_sched *q = qdisc_priv(sch);
qdisc_watchdog_cancel(&q->watchdog);
-#ifdef HTB_RATECM
- del_timer_sync(&q->rttim);
-#endif
/* This line used to be after htb_destroy_class call below
and surprisingly it worked in 2.4. But it must precede it
because filter need its target class alive to be able to call
@@ -1403,6 +1325,20 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
if (!cl) { /* new class */
struct Qdisc *new_q;
int prio;
+ struct {
+ struct rtattr rta;
+ struct gnet_estimator opt;
+ } est = {
+ .rta = {
+ .rta_len = RTA_LENGTH(sizeof(est.opt)),
+ .rta_type = TCA_RATE,
+ },
+ .opt = {
+ /* 4s interval, 16s averaging constant */
+ .interval = 2,
+ .ewma_log = 2,
+ },
+ };
/* check for valid classid */
if (!classid || TC_H_MAJ(classid ^ sch->handle)
@@ -1418,6 +1354,9 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
if ((cl = kzalloc(sizeof(*cl), GFP_KERNEL)) == NULL)
goto failure;
+ gen_new_estimator(&cl->bstats, &cl->rate_est,
+ &sch->dev->queue_lock,
+ tca[TCA_RATE-1] ? : &est.rta);
cl->refcnt = 1;
INIT_LIST_HEAD(&cl->sibling);
INIT_HLIST_NODE(&cl->hlist);
@@ -1469,8 +1408,13 @@ static int htb_change_class(struct Qdisc *sch, u32 classid,
hlist_add_head(&cl->hlist, q->hash + htb_hash(classid));
list_add_tail(&cl->sibling,
parent ? &parent->children : &q->root);
- } else
+ } else {
+ if (tca[TCA_RATE-1])
+ gen_replace_estimator(&cl->bstats, &cl->rate_est,
+ &sch->dev->queue_lock,
+ tca[TCA_RATE-1]);
sch_tree_lock(sch);
+ }
/* it used to be a nasty bug here, we have to check that node
is really leaf before changing cl->un.leaf ! */
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-23 05:10:04 +0000