#include <linux/module.h>
#include <linux/types.h>
#include <linux/kernel.h>
-#include <linux/sched.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/socket.h>
(root qdisc, all its children, children of children etc.)
*/
-struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle)
+static struct Qdisc *__qdisc_lookup(struct net_device *dev, u32 handle)
{
struct Qdisc *q;
- read_lock(&qdisc_tree_lock);
list_for_each_entry(q, &dev->qdisc_list, list) {
- if (q->handle == handle) {
- read_unlock(&qdisc_tree_lock);
+ if (q->handle == handle)
return q;
- }
}
- read_unlock(&qdisc_tree_lock);
return NULL;
}
+struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle)
+{
+ struct Qdisc *q;
+
+ read_lock(&qdisc_tree_lock);
+ q = __qdisc_lookup(dev, handle);
+ read_unlock(&qdisc_tree_lock);
+ return q;
+}
+
static struct Qdisc *qdisc_leaf(struct Qdisc *p, u32 classid)
{
unsigned long cl;
return oqdisc;
}
+void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
+{
+ struct Qdisc_class_ops *cops;
+ unsigned long cl;
+ u32 parentid;
+
+ if (n == 0)
+ return;
+ while ((parentid = sch->parent)) {
+ sch = __qdisc_lookup(sch->dev, TC_H_MAJ(parentid));
+ cops = sch->ops->cl_ops;
+ if (cops->qlen_notify) {
+ cl = cops->get(sch, parentid);
+ cops->qlen_notify(sch, cl);
+ cops->put(sch, cl);
+ }
+ sch->q.qlen -= n;
+ }
+}
+EXPORT_SYMBOL(qdisc_tree_decrease_qlen);
/* Graft qdisc "new" to class "classid" of qdisc "parent" or
to device "dev".
struct Qdisc *q = *old;
- if (parent == NULL) {
+ if (parent == NULL) {
if (q && q->flags&TCQ_F_INGRESS) {
*old = dev_graft_qdisc(dev, q);
} else {
q = qdisc_leaf(p, clid);
} else { /* ingress */
q = dev->qdisc_ingress;
- }
+ }
} else {
q = dev->qdisc_sleeping;
}
return -ENOENT;
if (clid == TC_H_INGRESS)
q = qdisc_create(dev, tcm->tcm_parent, tca, &err);
- else
+ else
q = qdisc_create(dev, tcm->tcm_handle, tca, &err);
if (q == NULL) {
if (err == -EAGAIN)
#endif
gnet_stats_copy_queue(&d, &q->qstats) < 0)
goto rtattr_failure;
-
+
if (gnet_stats_finish_copy(&d) < 0)
goto rtattr_failure;
-
+
nlh->nlmsg_len = skb->tail - b;
return skb->len;
}
/* OK. Locate qdisc */
- if ((q = qdisc_lookup(dev, qid)) == NULL)
+ if ((q = qdisc_lookup(dev, qid)) == NULL)
return -ENOENT;
/* An check that it supports classes */
goto out;
} else {
switch (n->nlmsg_type) {
- case RTM_NEWTCLASS:
+ case RTM_NEWTCLASS:
err = -EEXIST;
if (n->nlmsg_flags&NLM_F_EXCL)
goto out;
struct tcf_result *res)
{
int err = 0;
- u32 protocol = skb->protocol;
+ __be16 protocol = skb->protocol;
#ifdef CONFIG_NET_CLS_ACT
struct tcf_proto *otp = tp;
reclassify:
for ( ; tp; tp = tp->next) {
if ((tp->protocol == protocol ||
- tp->protocol == __constant_htons(ETH_P_ALL)) &&
+ tp->protocol == htons(ETH_P_ALL)) &&
(err = tp->classify(skb, tp, res)) >= 0) {
#ifdef CONFIG_NET_CLS_ACT
if ( TC_ACT_RECLASSIFY == err) {
skb->tc_verd = SET_TC_VERD(skb->tc_verd,verd);
goto reclassify;
} else {
- if (skb->tc_verd)
+ if (skb->tc_verd)
skb->tc_verd = SET_TC_VERD(skb->tc_verd,0);
return err;
}
return -1;
}
-static int psched_us_per_tick = 1;
-static int psched_tick_per_us = 1;
-
#ifdef CONFIG_PROC_FS
static int psched_show(struct seq_file *seq, void *v)
{
seq_printf(seq, "%08x %08x %08x %08x\n",
- psched_tick_per_us, psched_us_per_tick,
- 1000000, HZ);
+ (u32)NSEC_PER_USEC, (u32)PSCHED_US2NS(1),
+ 1000000, HZ);
return 0;
}
return single_open(file, psched_show, PDE(inode)->data);
}
-static struct file_operations psched_fops = {
+static const struct file_operations psched_fops = {
.owner = THIS_MODULE,
.open = psched_open,
.read = seq_read,
.llseek = seq_lseek,
.release = single_release,
-};
-#endif
-
-#ifdef CONFIG_NET_SCH_CLK_CPU
-psched_tdiff_t psched_clock_per_hz;
-int psched_clock_scale;
-EXPORT_SYMBOL(psched_clock_per_hz);
-EXPORT_SYMBOL(psched_clock_scale);
-
-psched_time_t psched_time_base;
-cycles_t psched_time_mark;
-EXPORT_SYMBOL(psched_time_mark);
-EXPORT_SYMBOL(psched_time_base);
-
-/*
- * Periodically adjust psched_time_base to avoid overflow
- * with 32-bit get_cycles(). Safe up to 4GHz CPU.
- */
-static void psched_tick(unsigned long);
-static DEFINE_TIMER(psched_timer, psched_tick, 0, 0);
-
-static void psched_tick(unsigned long dummy)
-{
- if (sizeof(cycles_t) == sizeof(u32)) {
- psched_time_t dummy_stamp;
- PSCHED_GET_TIME(dummy_stamp);
- psched_timer.expires = jiffies + 1*HZ;
- add_timer(&psched_timer);
- }
-}
-
-int __init psched_calibrate_clock(void)
-{
- psched_time_t stamp, stamp1;
- struct timeval tv, tv1;
- psched_tdiff_t delay;
- long rdelay;
- unsigned long stop;
-
- psched_tick(0);
- stop = jiffies + HZ/10;
- PSCHED_GET_TIME(stamp);
- do_gettimeofday(&tv);
- while (time_before(jiffies, stop)) {
- barrier();
- cpu_relax();
- }
- PSCHED_GET_TIME(stamp1);
- do_gettimeofday(&tv1);
-
- delay = PSCHED_TDIFF(stamp1, stamp);
- rdelay = tv1.tv_usec - tv.tv_usec;
- rdelay += (tv1.tv_sec - tv.tv_sec)*1000000;
- if (rdelay > delay)
- return -1;
- delay /= rdelay;
- psched_tick_per_us = delay;
- while ((delay>>=1) != 0)
- psched_clock_scale++;
- psched_us_per_tick = 1<<psched_clock_scale;
- psched_clock_per_hz = (psched_tick_per_us*(1000000/HZ))>>psched_clock_scale;
- return 0;
-}
+};
#endif
static int __init pktsched_init(void)
{
struct rtnetlink_link *link_p;
-#ifdef CONFIG_NET_SCH_CLK_CPU
- if (psched_calibrate_clock() < 0)
- return -1;
-#elif defined(CONFIG_NET_SCH_CLK_JIFFIES)
- psched_tick_per_us = HZ<<PSCHED_JSCALE;
- psched_us_per_tick = 1000000;
-#endif
-
link_p = rtnetlink_links[PF_UNSPEC];
/* Setup rtnetlink links. It is made here to avoid
subsys_initcall(pktsched_init);
-EXPORT_SYMBOL(qdisc_lookup);
EXPORT_SYMBOL(qdisc_get_rtab);
EXPORT_SYMBOL(qdisc_put_rtab);
EXPORT_SYMBOL(register_qdisc);
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