diff options
Diffstat (limited to 'ANDROID_3.4.5/include/net/sch_generic.h')
| -rw-r--r-- | ANDROID_3.4.5/include/net/sch_generic.h | 674 |
1 files changed, 0 insertions, 674 deletions
diff --git a/ANDROID_3.4.5/include/net/sch_generic.h b/ANDROID_3.4.5/include/net/sch_generic.h deleted file mode 100644 index 9d7d54a0..00000000 --- a/ANDROID_3.4.5/include/net/sch_generic.h +++ /dev/null @@ -1,674 +0,0 @@ -#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_WARN_NONWC (1 << 16) - int padded; - const struct Qdisc_ops *ops; - struct qdisc_size_table __rcu *stab; - struct list_head list; - u32 handle; - u32 parent; - atomic_t refcnt; - struct gnet_stats_rate_est rate_est; - 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 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; - spinlock_t busylock; - u32 limit; -}; - -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 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 bond_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; - struct hlist_node *n; - unsigned int h; - - h = qdisc_class_hash(id, hash->hashmask); - hlist_for_each_entry(cl, n, &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 - -#endif |