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Diffstat (limited to 'include/net/sch_generic.h')
-rw-r--r--include/net/sch_generic.h95
1 files changed, 65 insertions, 30 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h
index ea1f8a83160d..b931f021d7ab 100644
--- a/include/net/sch_generic.h
+++ b/include/net/sch_generic.h
@@ -25,16 +25,18 @@ struct qdisc_rate_table {
enum qdisc_state_t {
__QDISC_STATE_SCHED,
__QDISC_STATE_DEACTIVATED,
+ __QDISC_STATE_THROTTLED,
};
/*
* following bits are only changed while qdisc lock is held
*/
enum qdisc___state_t {
- __QDISC___STATE_RUNNING,
+ __QDISC___STATE_RUNNING = 1,
};
struct qdisc_size_table {
+ struct rcu_head rcu;
struct list_head list;
struct tc_sizespec szopts;
int refcnt;
@@ -46,14 +48,13 @@ struct Qdisc {
struct sk_buff * (*dequeue)(struct Qdisc *dev);
unsigned flags;
#define TCQ_F_BUILTIN 1
-#define TCQ_F_THROTTLED 2
-#define TCQ_F_INGRESS 4
-#define TCQ_F_CAN_BYPASS 8
-#define TCQ_F_MQROOT 16
+#define TCQ_F_INGRESS 2
+#define TCQ_F_CAN_BYPASS 4
+#define TCQ_F_MQROOT 8
#define TCQ_F_WARN_NONWC (1 << 16)
int padded;
struct Qdisc_ops *ops;
- struct qdisc_size_table *stab;
+ struct qdisc_size_table __rcu *stab;
struct list_head list;
u32 handle;
u32 parent;
@@ -78,25 +79,44 @@ struct Qdisc {
unsigned long state;
struct sk_buff_head q;
struct gnet_stats_basic_packed bstats;
- unsigned long __state;
+ unsigned int __state;
struct gnet_stats_queue qstats;
struct rcu_head rcu_head;
spinlock_t busylock;
+ u32 limit;
};
-static inline bool qdisc_is_running(struct Qdisc *qdisc)
+static inline bool qdisc_is_running(const struct Qdisc *qdisc)
{
- return test_bit(__QDISC___STATE_RUNNING, &qdisc->__state);
+ return (qdisc->__state & __QDISC___STATE_RUNNING) ? true : false;
}
static inline bool qdisc_run_begin(struct Qdisc *qdisc)
{
- return !__test_and_set_bit(__QDISC___STATE_RUNNING, &qdisc->__state);
+ if (qdisc_is_running(qdisc))
+ return false;
+ qdisc->__state |= __QDISC___STATE_RUNNING;
+ return true;
}
static inline void qdisc_run_end(struct Qdisc *qdisc)
{
- __clear_bit(__QDISC___STATE_RUNNING, &qdisc->__state);
+ qdisc->__state &= ~__QDISC___STATE_RUNNING;
+}
+
+static inline bool qdisc_is_throttled(const struct Qdisc *qdisc)
+{
+ return test_bit(__QDISC_STATE_THROTTLED, &qdisc->state) ? true : false;
+}
+
+static inline void qdisc_throttled(struct Qdisc *qdisc)
+{
+ set_bit(__QDISC_STATE_THROTTLED, &qdisc->state);
+}
+
+static inline void qdisc_unthrottled(struct Qdisc *qdisc)
+{
+ clear_bit(__QDISC_STATE_THROTTLED, &qdisc->state);
}
struct Qdisc_class_ops {
@@ -199,7 +219,7 @@ struct tcf_proto {
struct qdisc_skb_cb {
unsigned int pkt_len;
- char data[];
+ long data[];
};
static inline int qdisc_qlen(struct Qdisc *q)
@@ -207,7 +227,7 @@ static inline int qdisc_qlen(struct Qdisc *q)
return q->q.qlen;
}
-static inline struct qdisc_skb_cb *qdisc_skb_cb(struct sk_buff *skb)
+static inline struct qdisc_skb_cb *qdisc_skb_cb(const struct sk_buff *skb)
{
return (struct qdisc_skb_cb *)skb->cb;
}
@@ -321,6 +341,7 @@ extern void dev_init_scheduler(struct net_device *dev);
extern void dev_shutdown(struct net_device *dev);
extern void dev_activate(struct net_device *dev);
extern void dev_deactivate(struct net_device *dev);
+extern void dev_deactivate_many(struct list_head *head);
extern struct Qdisc *dev_graft_qdisc(struct netdev_queue *dev_queue,
struct Qdisc *qdisc);
extern void qdisc_reset(struct Qdisc *qdisc);
@@ -330,8 +351,8 @@ extern struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
struct Qdisc_ops *ops);
extern struct Qdisc *qdisc_create_dflt(struct netdev_queue *dev_queue,
struct Qdisc_ops *ops, u32 parentid);
-extern void qdisc_calculate_pkt_len(struct sk_buff *skb,
- struct qdisc_size_table *stab);
+extern void __qdisc_calculate_pkt_len(struct sk_buff *skb,
+ const struct qdisc_size_table *stab);
extern void tcf_destroy(struct tcf_proto *tp);
extern void tcf_destroy_chain(struct tcf_proto **fl);
@@ -393,7 +414,7 @@ static inline bool qdisc_tx_is_noop(const struct net_device *dev)
return true;
}
-static inline unsigned int qdisc_pkt_len(struct sk_buff *skb)
+static inline unsigned int qdisc_pkt_len(const struct sk_buff *skb)
{
return qdisc_skb_cb(skb)->pkt_len;
}
@@ -410,12 +431,20 @@ enum net_xmit_qdisc_t {
#define net_xmit_drop_count(e) (1)
#endif
-static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+static inline void qdisc_calculate_pkt_len(struct sk_buff *skb,
+ const struct Qdisc *sch)
{
#ifdef CONFIG_NET_SCHED
- if (sch->stab)
- qdisc_calculate_pkt_len(skb, sch->stab);
+ struct qdisc_size_table *stab = rcu_dereference_bh(sch->stab);
+
+ if (stab)
+ __qdisc_calculate_pkt_len(skb, stab);
#endif
+}
+
+static inline int qdisc_enqueue(struct sk_buff *skb, struct Qdisc *sch)
+{
+ qdisc_calculate_pkt_len(skb, sch);
return sch->enqueue(skb, sch);
}
@@ -425,10 +454,18 @@ static inline int qdisc_enqueue_root(struct sk_buff *skb, struct Qdisc *sch)
return qdisc_enqueue(skb, sch) & NET_XMIT_MASK;
}
-static inline void __qdisc_update_bstats(struct Qdisc *sch, unsigned int len)
+
+static inline void bstats_update(struct gnet_stats_basic_packed *bstats,
+ const struct sk_buff *skb)
+{
+ bstats->bytes += qdisc_pkt_len(skb);
+ bstats->packets += skb_is_gso(skb) ? skb_shinfo(skb)->gso_segs : 1;
+}
+
+static inline void qdisc_bstats_update(struct Qdisc *sch,
+ const struct sk_buff *skb)
{
- sch->bstats.bytes += len;
- sch->bstats.packets++;
+ bstats_update(&sch->bstats, skb);
}
static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch,
@@ -436,7 +473,6 @@ static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch,
{
__skb_queue_tail(list, skb);
sch->qstats.backlog += qdisc_pkt_len(skb);
- __qdisc_update_bstats(sch, qdisc_pkt_len(skb));
return NET_XMIT_SUCCESS;
}
@@ -451,8 +487,10 @@ static inline struct sk_buff *__qdisc_dequeue_head(struct Qdisc *sch,
{
struct sk_buff *skb = __skb_dequeue(list);
- if (likely(skb != NULL))
+ if (likely(skb != NULL)) {
sch->qstats.backlog -= qdisc_pkt_len(skb);
+ qdisc_bstats_update(sch, skb);
+ }
return skb;
}
@@ -465,10 +503,11 @@ static inline struct sk_buff *qdisc_dequeue_head(struct Qdisc *sch)
static inline unsigned int __qdisc_queue_drop_head(struct Qdisc *sch,
struct sk_buff_head *list)
{
- struct sk_buff *skb = __qdisc_dequeue_head(sch, list);
+ struct sk_buff *skb = __skb_dequeue(list);
if (likely(skb != NULL)) {
unsigned int len = qdisc_pkt_len(skb);
+ sch->qstats.backlog -= len;
kfree_skb(skb);
return len;
}
@@ -610,11 +649,7 @@ static inline struct sk_buff *skb_act_clone(struct sk_buff *skb, gfp_t gfp_mask,
{
struct sk_buff *n;
- if ((action == TC_ACT_STOLEN || action == TC_ACT_QUEUED) &&
- !skb_shared(skb))
- n = skb_get(skb);
- else
- n = skb_clone(skb, gfp_mask);
+ n = skb_clone(skb, gfp_mask);
if (n) {
n->tc_verd = SET_TC_VERD(n->tc_verd, 0);
generated by cgit v1.2.3 (git 2.46.0) at 2025-08-30 03:56:21 +0000