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Diffstat (limited to 'net/sched/sch_api.c')
-rw-r--r--net/sched/sch_api.c102
1 files changed, 50 insertions, 52 deletions
diff --git a/net/sched/sch_api.c b/net/sched/sch_api.c
index 7a6b0b7cc68a..dee0d5fb39c5 100644
--- a/net/sched/sch_api.c
+++ b/net/sched/sch_api.c
@@ -19,30 +19,18 @@
#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/netdevice.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/kmod.h>
#include <linux/list.h>
-#include <linux/bitops.h>
#include <linux/hrtimer.h>
#include <net/netlink.h>
-#include <net/sock.h>
#include <net/pkt_sched.h>
-#include <asm/processor.h>
-#include <asm/uaccess.h>
-#include <asm/system.h>
-
static int qdisc_notify(struct sk_buff *oskb, struct nlmsghdr *n, u32 clid,
struct Qdisc *old, struct Qdisc *new);
static int tclass_notify(struct sk_buff *oskb, struct nlmsghdr *n,
@@ -392,6 +380,10 @@ void qdisc_tree_decrease_qlen(struct Qdisc *sch, unsigned int n)
return;
while ((parentid = sch->parent)) {
sch = qdisc_lookup(sch->dev, TC_H_MAJ(parentid));
+ if (sch == NULL) {
+ WARN_ON(parentid != TC_H_ROOT);
+ return;
+ }
cops = sch->ops->cl_ops;
if (cops->qlen_notify) {
cl = cops->get(sch, parentid);
@@ -432,8 +424,6 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
unsigned long cl = cops->get(parent, classid);
if (cl) {
err = cops->graft(parent, cl, new, old);
- if (new)
- new->parent = classid;
cops->put(parent, cl);
}
}
@@ -448,7 +438,8 @@ static int qdisc_graft(struct net_device *dev, struct Qdisc *parent,
*/
static struct Qdisc *
-qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp)
+qdisc_create(struct net_device *dev, u32 parent, u32 handle,
+ struct rtattr **tca, int *errp)
{
int err;
struct rtattr *kind = tca[TCA_KIND-1];
@@ -494,6 +485,8 @@ qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp)
goto err_out2;
}
+ sch->parent = parent;
+
if (handle == TC_H_INGRESS) {
sch->flags |= TCQ_F_INGRESS;
sch->stats_lock = &dev->ingress_lock;
@@ -511,7 +504,6 @@ qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp)
sch->handle = handle;
if (!ops->init || (err = ops->init(sch, tca[TCA_OPTIONS-1])) == 0) {
-#ifdef CONFIG_NET_ESTIMATOR
if (tca[TCA_RATE-1]) {
err = gen_new_estimator(&sch->bstats, &sch->rate_est,
sch->stats_lock,
@@ -527,7 +519,6 @@ qdisc_create(struct net_device *dev, u32 handle, struct rtattr **tca, int *errp)
goto err_out3;
}
}
-#endif
qdisc_lock_tree(dev);
list_add_tail(&sch->list, &dev->qdisc_list);
qdisc_unlock_tree(dev);
@@ -555,11 +546,9 @@ static int qdisc_change(struct Qdisc *sch, struct rtattr **tca)
if (err)
return err;
}
-#ifdef CONFIG_NET_ESTIMATOR
if (tca[TCA_RATE-1])
gen_replace_estimator(&sch->bstats, &sch->rate_est,
sch->stats_lock, tca[TCA_RATE-1]);
-#endif
return 0;
}
@@ -774,9 +763,11 @@ create_n_graft:
if (!(n->nlmsg_flags&NLM_F_CREATE))
return -ENOENT;
if (clid == TC_H_INGRESS)
- q = qdisc_create(dev, tcm->tcm_parent, tca, &err);
+ q = qdisc_create(dev, tcm->tcm_parent, tcm->tcm_parent,
+ tca, &err);
else
- q = qdisc_create(dev, tcm->tcm_handle, tca, &err);
+ q = qdisc_create(dev, tcm->tcm_parent, tcm->tcm_handle,
+ tca, &err);
if (q == NULL) {
if (err == -EAGAIN)
goto replay;
@@ -835,9 +826,7 @@ static int tc_fill_qdisc(struct sk_buff *skb, struct Qdisc *q, u32 clid,
goto rtattr_failure;
if (gnet_stats_copy_basic(&d, &q->bstats) < 0 ||
-#ifdef CONFIG_NET_ESTIMATOR
gnet_stats_copy_rate_est(&d, &q->rate_est) < 0 ||
-#endif
gnet_stats_copy_queue(&d, &q->qstats) < 0)
goto rtattr_failure;
@@ -1163,47 +1152,57 @@ static int tc_dump_tclass(struct sk_buff *skb, struct netlink_callback *cb)
to this qdisc, (optionally) tests for protocol and asks
specific classifiers.
*/
+int tc_classify_compat(struct sk_buff *skb, struct tcf_proto *tp,
+ struct tcf_result *res)
+{
+ __be16 protocol = skb->protocol;
+ int err = 0;
+
+ for (; tp; tp = tp->next) {
+ if ((tp->protocol == protocol ||
+ tp->protocol == htons(ETH_P_ALL)) &&
+ (err = tp->classify(skb, tp, res)) >= 0) {
+#ifdef CONFIG_NET_CLS_ACT
+ if (err != TC_ACT_RECLASSIFY && skb->tc_verd)
+ skb->tc_verd = SET_TC_VERD(skb->tc_verd, 0);
+#endif
+ return err;
+ }
+ }
+ return -1;
+}
+EXPORT_SYMBOL(tc_classify_compat);
+
int tc_classify(struct sk_buff *skb, struct tcf_proto *tp,
- struct tcf_result *res)
+ struct tcf_result *res)
{
int err = 0;
- __be16 protocol = skb->protocol;
+ __be16 protocol;
#ifdef CONFIG_NET_CLS_ACT
struct tcf_proto *otp = tp;
reclassify:
#endif
protocol = skb->protocol;
- for ( ; tp; tp = tp->next) {
- if ((tp->protocol == protocol ||
- tp->protocol == htons(ETH_P_ALL)) &&
- (err = tp->classify(skb, tp, res)) >= 0) {
+ err = tc_classify_compat(skb, tp, res);
#ifdef CONFIG_NET_CLS_ACT
- if ( TC_ACT_RECLASSIFY == err) {
- __u32 verd = (__u32) G_TC_VERD(skb->tc_verd);
- tp = otp;
-
- if (MAX_REC_LOOP < verd++) {
- printk("rule prio %d protocol %02x reclassify is buggy packet dropped\n",
- tp->prio&0xffff, ntohs(tp->protocol));
- return TC_ACT_SHOT;
- }
- skb->tc_verd = SET_TC_VERD(skb->tc_verd,verd);
- goto reclassify;
- } else {
- if (skb->tc_verd)
- skb->tc_verd = SET_TC_VERD(skb->tc_verd,0);
- return err;
- }
-#else
-
- return err;
-#endif
+ if (err == TC_ACT_RECLASSIFY) {
+ u32 verd = G_TC_VERD(skb->tc_verd);
+ tp = otp;
+
+ if (verd++ >= MAX_REC_LOOP) {
+ printk("rule prio %u protocol %02x reclassify loop, "
+ "packet dropped\n",
+ tp->prio&0xffff, ntohs(tp->protocol));
+ return TC_ACT_SHOT;
}
-
+ skb->tc_verd = SET_TC_VERD(skb->tc_verd, verd);
+ goto reclassify;
}
- return -1;
+#endif
+ return err;
}
+EXPORT_SYMBOL(tc_classify);
void tcf_destroy(struct tcf_proto *tp)
{
@@ -1270,4 +1269,3 @@ EXPORT_SYMBOL(qdisc_get_rtab);
EXPORT_SYMBOL(qdisc_put_rtab);
EXPORT_SYMBOL(register_qdisc);
EXPORT_SYMBOL(unregister_qdisc);
-EXPORT_SYMBOL(tc_classify);
generated by cgit v1.2.3 (git 2.0.4) at 2024-05-23 15:33:56 +0000