diff options
Diffstat (limited to 'include/net/sch_generic.h')
| -rw-r--r-- | include/net/sch_generic.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/include/net/sch_generic.h b/include/net/sch_generic.h new file mode 100644 index 000000000000..c57504b3b518 --- /dev/null +++ b/include/net/sch_generic.h @@ -0,0 +1,175 @@ +#ifndef __NET_SCHED_GENERIC_H +#define __NET_SCHED_GENERIC_H + +#include <linux/config.h> +#include <linux/netdevice.h> +#include <linux/types.h> +#include <linux/rcupdate.h> +#include <linux/module.h> +#include <linux/rtnetlink.h> +#include <linux/pkt_sched.h> +#include <linux/pkt_cls.h> +#include <net/gen_stats.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; +}; + +struct Qdisc +{ + int (*enqueue)(struct sk_buff *skb, struct Qdisc *dev); + struct sk_buff * (*dequeue)(struct Qdisc *dev); + unsigned flags; +#define TCQ_F_BUILTIN 1 +#define TCQ_F_THROTTLED 2 +#define TCQ_F_INGRESS 4 + int padded; + struct Qdisc_ops *ops; + u32 handle; + u32 parent; + atomic_t refcnt; + struct sk_buff_head q; + struct net_device *dev; + struct list_head list; + + struct gnet_stats_basic bstats; + struct gnet_stats_queue qstats; + struct gnet_stats_rate_est rate_est; + spinlock_t *stats_lock; + struct rcu_head q_rcu; + int (*reshape_fail)(struct sk_buff *skb, + struct Qdisc *q); + + /* 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 Qdisc_class_ops +{ + /* Child qdisc manipulation */ + int (*graft)(struct Qdisc *, unsigned long cl, + struct Qdisc *, struct Qdisc **); + struct Qdisc * (*leaf)(struct Qdisc *, unsigned long cl); + + /* Class manipulation routines */ + unsigned long (*get)(struct Qdisc *, u32 classid); + void (*put)(struct Qdisc *, unsigned long); + int (*change)(struct Qdisc *, u32, u32, + struct rtattr **, 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; + 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 *); + int (*requeue)(struct sk_buff *, struct Qdisc *); + unsigned int (*drop)(struct Qdisc *); + + int (*init)(struct Qdisc *, struct rtattr *arg); + void (*reset)(struct Qdisc *); + void (*destroy)(struct Qdisc *); + int (*change)(struct Qdisc *, struct rtattr *arg); + + 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*, 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 rtattr **, + 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*, struct tcf_proto*, + struct tcf_result *); + u32 protocol; + + /* All the rest */ + u32 prio; + u32 classid; + struct Qdisc *q; + void *data; + struct tcf_proto_ops *ops; +}; + + +extern void qdisc_lock_tree(struct net_device *dev); +extern void qdisc_unlock_tree(struct net_device *dev); + +#define sch_tree_lock(q) qdisc_lock_tree((q)->dev) +#define sch_tree_unlock(q) qdisc_unlock_tree((q)->dev) +#define tcf_tree_lock(tp) qdisc_lock_tree((tp)->q->dev) +#define tcf_tree_unlock(tp) qdisc_unlock_tree((tp)->q->dev) + +static inline void +tcf_destroy(struct tcf_proto *tp) +{ + tp->ops->destroy(tp); + module_put(tp->ops->owner); + kfree(tp); +} + +#endif |