| #ifndef __NET_SCHED_GENERIC_H |
| #define __NET_SCHED_GENERIC_H |
| |
| #include <linux/netdevice.h> |
| #include <linux/types.h> |
| #include <linux/rcupdate.h> |
| #include <linux/pkt_sched.h> |
| #include <linux/pkt_cls.h> |
| #include <net/gen_stats.h> |
| #include <net/rtnetlink.h> |
| |
| struct Qdisc_ops; |
| struct qdisc_walker; |
| struct tcf_walker; |
| struct module; |
| |
| struct qdisc_rate_table { |
| struct tc_ratespec rate; |
| u32 data[256]; |
| struct qdisc_rate_table *next; |
| int refcnt; |
| }; |
| |
| 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 = 1, |
| }; |
| |
| struct qdisc_size_table { |
| struct rcu_head rcu; |
| struct list_head list; |
| struct tc_sizespec szopts; |
| int refcnt; |
| u16 data[]; |
| }; |
| |
| struct Qdisc { |
| int (*enqueue)(struct sk_buff *skb, struct Qdisc *dev); |
| struct sk_buff * (*dequeue)(struct Qdisc *dev); |
| unsigned int flags; |
| #define TCQ_F_BUILTIN 1 |
| #define TCQ_F_INGRESS 2 |
| #define TCQ_F_CAN_BYPASS 4 |
| #define TCQ_F_MQROOT 8 |
| #define TCQ_F_ONETXQUEUE 0x10 /* dequeue_skb() can assume all skbs are for |
| * q->dev_queue : It can test |
| * netif_xmit_frozen_or_stopped() before |
| * dequeueing next packet. |
| * Its true for MQ/MQPRIO slaves, or non |
| * multiqueue device. |
| */ |
| #define TCQ_F_WARN_NONWC (1 << 16) |
| u32 limit; |
| const struct Qdisc_ops *ops; |
| struct qdisc_size_table __rcu *stab; |
| struct list_head list; |
| u32 handle; |
| u32 parent; |
| int (*reshape_fail)(struct sk_buff *skb, |
| struct Qdisc *q); |
| |
| void *u32_node; |
| |
| /* This field is deprecated, but it is still used by CBQ |
| * and it will live until better solution will be invented. |
| */ |
| struct Qdisc *__parent; |
| struct netdev_queue *dev_queue; |
| |
| struct gnet_stats_rate_est64 rate_est; |
| struct Qdisc *next_sched; |
| struct sk_buff *gso_skb; |
| /* |
| * For performance sake on SMP, we put highly modified fields at the end |
| */ |
| unsigned long state; |
| struct sk_buff_head q; |
| struct gnet_stats_basic_packed bstats; |
| unsigned int __state; |
| struct gnet_stats_queue qstats; |
| struct rcu_head rcu_head; |
| int padded; |
| atomic_t refcnt; |
| |
| spinlock_t busylock ____cacheline_aligned_in_smp; |
| }; |
| |
| static inline bool qdisc_is_running(const struct Qdisc *qdisc) |
| { |
| return (qdisc->__state & __QDISC___STATE_RUNNING) ? true : false; |
| } |
| |
| static inline bool qdisc_run_begin(struct Qdisc *qdisc) |
| { |
| if (qdisc_is_running(qdisc)) |
| return false; |
| qdisc->__state |= __QDISC___STATE_RUNNING; |
| return true; |
| } |
| |
| static inline void qdisc_run_end(struct Qdisc *qdisc) |
| { |
| 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 { |
| /* Child qdisc manipulation */ |
| struct netdev_queue * (*select_queue)(struct Qdisc *, struct tcmsg *); |
| int (*graft)(struct Qdisc *, unsigned long cl, |
| struct Qdisc *, struct Qdisc **); |
| struct Qdisc * (*leaf)(struct Qdisc *, unsigned long cl); |
| void (*qlen_notify)(struct Qdisc *, unsigned long); |
| |
| /* Class manipulation routines */ |
| unsigned long (*get)(struct Qdisc *, u32 classid); |
| void (*put)(struct Qdisc *, unsigned long); |
| int (*change)(struct Qdisc *, u32, u32, |
| struct nlattr **, unsigned long *); |
| int (*delete)(struct Qdisc *, unsigned long); |
| void (*walk)(struct Qdisc *, struct qdisc_walker * arg); |
| |
| /* Filter manipulation */ |
| struct tcf_proto ** (*tcf_chain)(struct Qdisc *, unsigned long); |
| unsigned long (*bind_tcf)(struct Qdisc *, unsigned long, |
| u32 classid); |
| void (*unbind_tcf)(struct Qdisc *, unsigned long); |
| |
| /* rtnetlink specific */ |
| int (*dump)(struct Qdisc *, unsigned long, |
| struct sk_buff *skb, struct tcmsg*); |
| int (*dump_stats)(struct Qdisc *, unsigned long, |
| struct gnet_dump *); |
| }; |
| |
| struct Qdisc_ops { |
| struct Qdisc_ops *next; |
| const struct Qdisc_class_ops *cl_ops; |
| char id[IFNAMSIZ]; |
| int priv_size; |
| |
| int (*enqueue)(struct sk_buff *, struct Qdisc *); |
| struct sk_buff * (*dequeue)(struct Qdisc *); |
| struct sk_buff * (*peek)(struct Qdisc *); |
| unsigned int (*drop)(struct Qdisc *); |
| |
| int (*init)(struct Qdisc *, struct nlattr *arg); |
| void (*reset)(struct Qdisc *); |
| void (*destroy)(struct Qdisc *); |
| int (*change)(struct Qdisc *, struct nlattr *arg); |
| void (*attach)(struct Qdisc *); |
| |
| int (*dump)(struct Qdisc *, struct sk_buff *); |
| int (*dump_stats)(struct Qdisc *, struct gnet_dump *); |
| |
| struct module *owner; |
| }; |
| |
| |
| struct tcf_result { |
| unsigned long class; |
| u32 classid; |
| }; |
| |
| struct tcf_proto_ops { |
| struct tcf_proto_ops *next; |
| char kind[IFNAMSIZ]; |
| |
| int (*classify)(struct sk_buff *, |
| const struct tcf_proto *, |
| struct tcf_result *); |
| int (*init)(struct tcf_proto*); |
| void (*destroy)(struct tcf_proto*); |
| |
| unsigned long (*get)(struct tcf_proto*, u32 handle); |
| void (*put)(struct tcf_proto*, unsigned long); |
| int (*change)(struct net *net, struct sk_buff *, |
| struct tcf_proto*, unsigned long, |
| u32 handle, struct nlattr **, |
| unsigned long *); |
| int (*delete)(struct tcf_proto*, unsigned long); |
| void (*walk)(struct tcf_proto*, struct tcf_walker *arg); |
| |
| /* rtnetlink specific */ |
| int (*dump)(struct tcf_proto*, unsigned long, |
| struct sk_buff *skb, struct tcmsg*); |
| |
| struct module *owner; |
| }; |
| |
| struct tcf_proto { |
| /* Fast access part */ |
| struct tcf_proto *next; |
| void *root; |
| int (*classify)(struct sk_buff *, |
| const struct tcf_proto *, |
| struct tcf_result *); |
| __be16 protocol; |
| |
| /* All the rest */ |
| u32 prio; |
| u32 classid; |
| struct Qdisc *q; |
| void *data; |
| const struct tcf_proto_ops *ops; |
| }; |
| |
| struct qdisc_skb_cb { |
| unsigned int pkt_len; |
| u16 slave_dev_queue_mapping; |
| u16 _pad; |
| unsigned char data[20]; |
| }; |
| |
| static inline void qdisc_cb_private_validate(const struct sk_buff *skb, int sz) |
| { |
| struct qdisc_skb_cb *qcb; |
| |
| BUILD_BUG_ON(sizeof(skb->cb) < offsetof(struct qdisc_skb_cb, data) + sz); |
| BUILD_BUG_ON(sizeof(qcb->data) < sz); |
| } |
| |
| static inline int qdisc_qlen(const struct Qdisc *q) |
| { |
| return q->q.qlen; |
| } |
| |
| static inline struct qdisc_skb_cb *qdisc_skb_cb(const struct sk_buff *skb) |
| { |
| return (struct qdisc_skb_cb *)skb->cb; |
| } |
| |
| static inline spinlock_t *qdisc_lock(struct Qdisc *qdisc) |
| { |
| return &qdisc->q.lock; |
| } |
| |
| static inline struct Qdisc *qdisc_root(const struct Qdisc *qdisc) |
| { |
| return qdisc->dev_queue->qdisc; |
| } |
| |
| static inline struct Qdisc *qdisc_root_sleeping(const struct Qdisc *qdisc) |
| { |
| return qdisc->dev_queue->qdisc_sleeping; |
| } |
| |
| /* The qdisc root lock is a mechanism by which to top level |
| * of a qdisc tree can be locked from any qdisc node in the |
| * forest. This allows changing the configuration of some |
| * aspect of the qdisc tree while blocking out asynchronous |
| * qdisc access in the packet processing paths. |
| * |
| * It is only legal to do this when the root will not change |
| * on us. Otherwise we'll potentially lock the wrong qdisc |
| * root. This is enforced by holding the RTNL semaphore, which |
| * all users of this lock accessor must do. |
| */ |
| static inline spinlock_t *qdisc_root_lock(const struct Qdisc *qdisc) |
| { |
| struct Qdisc *root = qdisc_root(qdisc); |
| |
| ASSERT_RTNL(); |
| return qdisc_lock(root); |
| } |
| |
| static inline spinlock_t *qdisc_root_sleeping_lock(const struct Qdisc *qdisc) |
| { |
| struct Qdisc *root = qdisc_root_sleeping(qdisc); |
| |
| ASSERT_RTNL(); |
| return qdisc_lock(root); |
| } |
| |
| static inline struct net_device *qdisc_dev(const struct Qdisc *qdisc) |
| { |
| return qdisc->dev_queue->dev; |
| } |
| |
| static inline void sch_tree_lock(const struct Qdisc *q) |
| { |
| spin_lock_bh(qdisc_root_sleeping_lock(q)); |
| } |
| |
| static inline void sch_tree_unlock(const struct Qdisc *q) |
| { |
| spin_unlock_bh(qdisc_root_sleeping_lock(q)); |
| } |
| |
| #define tcf_tree_lock(tp) sch_tree_lock((tp)->q) |
| #define tcf_tree_unlock(tp) sch_tree_unlock((tp)->q) |
| |
| extern struct Qdisc noop_qdisc; |
| extern struct Qdisc_ops noop_qdisc_ops; |
| extern struct Qdisc_ops pfifo_fast_ops; |
| extern struct Qdisc_ops mq_qdisc_ops; |
| |
| struct Qdisc_class_common { |
| u32 classid; |
| struct hlist_node hnode; |
| }; |
| |
| struct Qdisc_class_hash { |
| struct hlist_head *hash; |
| unsigned int hashsize; |
| unsigned int hashmask; |
| unsigned int hashelems; |
| }; |
| |
| static inline unsigned int qdisc_class_hash(u32 id, u32 mask) |
| { |
| id ^= id >> 8; |
| id ^= id >> 4; |
| return id & mask; |
| } |
| |
| static inline struct Qdisc_class_common * |
| qdisc_class_find(const struct Qdisc_class_hash *hash, u32 id) |
| { |
| struct Qdisc_class_common *cl; |
| unsigned int h; |
| |
| h = qdisc_class_hash(id, hash->hashmask); |
| hlist_for_each_entry(cl, &hash->hash[h], hnode) { |
| if (cl->classid == id) |
| return cl; |
| } |
| return NULL; |
| } |
| |
| extern int qdisc_class_hash_init(struct Qdisc_class_hash *); |
| extern void qdisc_class_hash_insert(struct Qdisc_class_hash *, struct Qdisc_class_common *); |
| extern void qdisc_class_hash_remove(struct Qdisc_class_hash *, struct Qdisc_class_common *); |
| extern void qdisc_class_hash_grow(struct Qdisc *, struct Qdisc_class_hash *); |
| extern void qdisc_class_hash_destroy(struct Qdisc_class_hash *); |
| |
| 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); |
| extern void qdisc_destroy(struct Qdisc *qdisc); |
| extern void qdisc_tree_decrease_qlen(struct Qdisc *qdisc, unsigned int n); |
| 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, |
| const struct qdisc_size_table *stab); |
| extern void tcf_destroy(struct tcf_proto *tp); |
| extern void tcf_destroy_chain(struct tcf_proto **fl); |
| |
| /* Reset all TX qdiscs greater then index of a device. */ |
| static inline void qdisc_reset_all_tx_gt(struct net_device *dev, unsigned int i) |
| { |
| struct Qdisc *qdisc; |
| |
| for (; i < dev->num_tx_queues; i++) { |
| qdisc = netdev_get_tx_queue(dev, i)->qdisc; |
| if (qdisc) { |
| spin_lock_bh(qdisc_lock(qdisc)); |
| qdisc_reset(qdisc); |
| spin_unlock_bh(qdisc_lock(qdisc)); |
| } |
| } |
| } |
| |
| static inline void qdisc_reset_all_tx(struct net_device *dev) |
| { |
| qdisc_reset_all_tx_gt(dev, 0); |
| } |
| |
| /* Are all TX queues of the device empty? */ |
| static inline bool qdisc_all_tx_empty(const struct net_device *dev) |
| { |
| unsigned int i; |
| for (i = 0; i < dev->num_tx_queues; i++) { |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| const struct Qdisc *q = txq->qdisc; |
| |
| if (q->q.qlen) |
| return false; |
| } |
| return true; |
| } |
| |
| /* Are any of the TX qdiscs changing? */ |
| static inline bool qdisc_tx_changing(const struct net_device *dev) |
| { |
| unsigned int i; |
| for (i = 0; i < dev->num_tx_queues; i++) { |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| if (txq->qdisc != txq->qdisc_sleeping) |
| return true; |
| } |
| return false; |
| } |
| |
| /* Is the device using the noop qdisc on all queues? */ |
| static inline bool qdisc_tx_is_noop(const struct net_device *dev) |
| { |
| unsigned int i; |
| for (i = 0; i < dev->num_tx_queues; i++) { |
| struct netdev_queue *txq = netdev_get_tx_queue(dev, i); |
| if (txq->qdisc != &noop_qdisc) |
| return false; |
| } |
| return true; |
| } |
| |
| static inline unsigned int qdisc_pkt_len(const struct sk_buff *skb) |
| { |
| return qdisc_skb_cb(skb)->pkt_len; |
| } |
| |
| /* additional qdisc xmit flags (NET_XMIT_MASK in linux/netdevice.h) */ |
| enum net_xmit_qdisc_t { |
| __NET_XMIT_STOLEN = 0x00010000, |
| __NET_XMIT_BYPASS = 0x00020000, |
| }; |
| |
| #ifdef CONFIG_NET_CLS_ACT |
| #define net_xmit_drop_count(e) ((e) & __NET_XMIT_STOLEN ? 0 : 1) |
| #else |
| #define net_xmit_drop_count(e) (1) |
| #endif |
| |
| static inline void qdisc_calculate_pkt_len(struct sk_buff *skb, |
| const struct Qdisc *sch) |
| { |
| #ifdef CONFIG_NET_SCHED |
| 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); |
| } |
| |
| static inline int qdisc_enqueue_root(struct sk_buff *skb, struct Qdisc *sch) |
| { |
| qdisc_skb_cb(skb)->pkt_len = skb->len; |
| return qdisc_enqueue(skb, sch) & NET_XMIT_MASK; |
| } |
| |
| |
| 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) |
| { |
| bstats_update(&sch->bstats, skb); |
| } |
| |
| static inline int __qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch, |
| struct sk_buff_head *list) |
| { |
| __skb_queue_tail(list, skb); |
| sch->qstats.backlog += qdisc_pkt_len(skb); |
| |
| return NET_XMIT_SUCCESS; |
| } |
| |
| static inline int qdisc_enqueue_tail(struct sk_buff *skb, struct Qdisc *sch) |
| { |
| return __qdisc_enqueue_tail(skb, sch, &sch->q); |
| } |
| |
| static inline struct sk_buff *__qdisc_dequeue_head(struct Qdisc *sch, |
| struct sk_buff_head *list) |
| { |
| struct sk_buff *skb = __skb_dequeue(list); |
| |
| if (likely(skb != NULL)) { |
| sch->qstats.backlog -= qdisc_pkt_len(skb); |
| qdisc_bstats_update(sch, skb); |
| } |
| |
| return skb; |
| } |
| |
| static inline struct sk_buff *qdisc_dequeue_head(struct Qdisc *sch) |
| { |
| return __qdisc_dequeue_head(sch, &sch->q); |
| } |
| |
| static inline unsigned int __qdisc_queue_drop_head(struct Qdisc *sch, |
| struct sk_buff_head *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; |
| } |
| |
| return 0; |
| } |
| |
| static inline unsigned int qdisc_queue_drop_head(struct Qdisc *sch) |
| { |
| return __qdisc_queue_drop_head(sch, &sch->q); |
| } |
| |
| static inline struct sk_buff *__qdisc_dequeue_tail(struct Qdisc *sch, |
| struct sk_buff_head *list) |
| { |
| struct sk_buff *skb = __skb_dequeue_tail(list); |
| |
| if (likely(skb != NULL)) |
| sch->qstats.backlog -= qdisc_pkt_len(skb); |
| |
| return skb; |
| } |
| |
| static inline struct sk_buff *qdisc_dequeue_tail(struct Qdisc *sch) |
| { |
| return __qdisc_dequeue_tail(sch, &sch->q); |
| } |
| |
| static inline struct sk_buff *qdisc_peek_head(struct Qdisc *sch) |
| { |
| return skb_peek(&sch->q); |
| } |
| |
| /* generic pseudo peek method for non-work-conserving qdisc */ |
| static inline struct sk_buff *qdisc_peek_dequeued(struct Qdisc *sch) |
| { |
| /* we can reuse ->gso_skb because peek isn't called for root qdiscs */ |
| if (!sch->gso_skb) { |
| sch->gso_skb = sch->dequeue(sch); |
| if (sch->gso_skb) |
| /* it's still part of the queue */ |
| sch->q.qlen++; |
| } |
| |
| return sch->gso_skb; |
| } |
| |
| /* use instead of qdisc->dequeue() for all qdiscs queried with ->peek() */ |
| static inline struct sk_buff *qdisc_dequeue_peeked(struct Qdisc *sch) |
| { |
| struct sk_buff *skb = sch->gso_skb; |
| |
| if (skb) { |
| sch->gso_skb = NULL; |
| sch->q.qlen--; |
| } else { |
| skb = sch->dequeue(sch); |
| } |
| |
| return skb; |
| } |
| |
| static inline void __qdisc_reset_queue(struct Qdisc *sch, |
| struct sk_buff_head *list) |
| { |
| /* |
| * We do not know the backlog in bytes of this list, it |
| * is up to the caller to correct it |
| */ |
| __skb_queue_purge(list); |
| } |
| |
| static inline void qdisc_reset_queue(struct Qdisc *sch) |
| { |
| __qdisc_reset_queue(sch, &sch->q); |
| sch->qstats.backlog = 0; |
| } |
| |
| static inline unsigned int __qdisc_queue_drop(struct Qdisc *sch, |
| struct sk_buff_head *list) |
| { |
| struct sk_buff *skb = __qdisc_dequeue_tail(sch, list); |
| |
| if (likely(skb != NULL)) { |
| unsigned int len = qdisc_pkt_len(skb); |
| kfree_skb(skb); |
| return len; |
| } |
| |
| return 0; |
| } |
| |
| static inline unsigned int qdisc_queue_drop(struct Qdisc *sch) |
| { |
| return __qdisc_queue_drop(sch, &sch->q); |
| } |
| |
| static inline int qdisc_drop(struct sk_buff *skb, struct Qdisc *sch) |
| { |
| kfree_skb(skb); |
| sch->qstats.drops++; |
| |
| return NET_XMIT_DROP; |
| } |
| |
| static inline int qdisc_reshape_fail(struct sk_buff *skb, struct Qdisc *sch) |
| { |
| sch->qstats.drops++; |
| |
| #ifdef CONFIG_NET_CLS_ACT |
| if (sch->reshape_fail == NULL || sch->reshape_fail(skb, sch)) |
| goto drop; |
| |
| return NET_XMIT_SUCCESS; |
| |
| drop: |
| #endif |
| kfree_skb(skb); |
| return NET_XMIT_DROP; |
| } |
| |
| /* Length to Time (L2T) lookup in a qdisc_rate_table, to determine how |
| long it will take to send a packet given its size. |
| */ |
| static inline u32 qdisc_l2t(struct qdisc_rate_table* rtab, unsigned int pktlen) |
| { |
| int slot = pktlen + rtab->rate.cell_align + rtab->rate.overhead; |
| if (slot < 0) |
| slot = 0; |
| slot >>= rtab->rate.cell_log; |
| if (slot > 255) |
| return rtab->data[255]*(slot >> 8) + rtab->data[slot & 0xFF]; |
| return rtab->data[slot]; |
| } |
| |
| #ifdef CONFIG_NET_CLS_ACT |
| static inline struct sk_buff *skb_act_clone(struct sk_buff *skb, gfp_t gfp_mask, |
| int action) |
| { |
| struct sk_buff *n; |
| |
| n = skb_clone(skb, gfp_mask); |
| |
| if (n) { |
| n->tc_verd = SET_TC_VERD(n->tc_verd, 0); |
| n->tc_verd = CLR_TC_OK2MUNGE(n->tc_verd); |
| n->tc_verd = CLR_TC_MUNGED(n->tc_verd); |
| } |
| return n; |
| } |
| #endif |
| |
| struct psched_ratecfg { |
| u64 rate_bps; |
| u32 mult; |
| u16 overhead; |
| u8 shift; |
| }; |
| |
| static inline u64 psched_l2t_ns(const struct psched_ratecfg *r, |
| unsigned int len) |
| { |
| return ((u64)(len + r->overhead) * r->mult) >> r->shift; |
| } |
| |
| extern void psched_ratecfg_precompute(struct psched_ratecfg *r, const struct tc_ratespec *conf); |
| |
| static inline void psched_ratecfg_getrate(struct tc_ratespec *res, |
| const struct psched_ratecfg *r) |
| { |
| memset(res, 0, sizeof(*res)); |
| res->rate = r->rate_bps >> 3; |
| res->overhead = r->overhead; |
| } |
| |
| #endif |