]>
Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | #ifndef __NET_SCHED_GENERIC_H |
2 | #define __NET_SCHED_GENERIC_H | |
3 | ||
4 | #include <linux/config.h> | |
5 | #include <linux/netdevice.h> | |
6 | #include <linux/types.h> | |
7 | #include <linux/rcupdate.h> | |
8 | #include <linux/module.h> | |
9 | #include <linux/rtnetlink.h> | |
10 | #include <linux/pkt_sched.h> | |
11 | #include <linux/pkt_cls.h> | |
12 | #include <net/gen_stats.h> | |
13 | ||
14 | struct Qdisc_ops; | |
15 | struct qdisc_walker; | |
16 | struct tcf_walker; | |
17 | struct module; | |
18 | ||
19 | struct qdisc_rate_table | |
20 | { | |
21 | struct tc_ratespec rate; | |
22 | u32 data[256]; | |
23 | struct qdisc_rate_table *next; | |
24 | int refcnt; | |
25 | }; | |
26 | ||
27 | struct Qdisc | |
28 | { | |
29 | int (*enqueue)(struct sk_buff *skb, struct Qdisc *dev); | |
30 | struct sk_buff * (*dequeue)(struct Qdisc *dev); | |
31 | unsigned flags; | |
32 | #define TCQ_F_BUILTIN 1 | |
33 | #define TCQ_F_THROTTLED 2 | |
34 | #define TCQ_F_INGRESS 4 | |
35 | int padded; | |
36 | struct Qdisc_ops *ops; | |
37 | u32 handle; | |
38 | u32 parent; | |
39 | atomic_t refcnt; | |
40 | struct sk_buff_head q; | |
41 | struct net_device *dev; | |
42 | struct list_head list; | |
43 | ||
44 | struct gnet_stats_basic bstats; | |
45 | struct gnet_stats_queue qstats; | |
46 | struct gnet_stats_rate_est rate_est; | |
47 | spinlock_t *stats_lock; | |
48 | struct rcu_head q_rcu; | |
49 | int (*reshape_fail)(struct sk_buff *skb, | |
50 | struct Qdisc *q); | |
51 | ||
52 | /* This field is deprecated, but it is still used by CBQ | |
53 | * and it will live until better solution will be invented. | |
54 | */ | |
55 | struct Qdisc *__parent; | |
56 | }; | |
57 | ||
58 | struct Qdisc_class_ops | |
59 | { | |
60 | /* Child qdisc manipulation */ | |
61 | int (*graft)(struct Qdisc *, unsigned long cl, | |
62 | struct Qdisc *, struct Qdisc **); | |
63 | struct Qdisc * (*leaf)(struct Qdisc *, unsigned long cl); | |
64 | ||
65 | /* Class manipulation routines */ | |
66 | unsigned long (*get)(struct Qdisc *, u32 classid); | |
67 | void (*put)(struct Qdisc *, unsigned long); | |
68 | int (*change)(struct Qdisc *, u32, u32, | |
69 | struct rtattr **, unsigned long *); | |
70 | int (*delete)(struct Qdisc *, unsigned long); | |
71 | void (*walk)(struct Qdisc *, struct qdisc_walker * arg); | |
72 | ||
73 | /* Filter manipulation */ | |
74 | struct tcf_proto ** (*tcf_chain)(struct Qdisc *, unsigned long); | |
75 | unsigned long (*bind_tcf)(struct Qdisc *, unsigned long, | |
76 | u32 classid); | |
77 | void (*unbind_tcf)(struct Qdisc *, unsigned long); | |
78 | ||
79 | /* rtnetlink specific */ | |
80 | int (*dump)(struct Qdisc *, unsigned long, | |
81 | struct sk_buff *skb, struct tcmsg*); | |
82 | int (*dump_stats)(struct Qdisc *, unsigned long, | |
83 | struct gnet_dump *); | |
84 | }; | |
85 | ||
86 | struct Qdisc_ops | |
87 | { | |
88 | struct Qdisc_ops *next; | |
89 | struct Qdisc_class_ops *cl_ops; | |
90 | char id[IFNAMSIZ]; | |
91 | int priv_size; | |
92 | ||
93 | int (*enqueue)(struct sk_buff *, struct Qdisc *); | |
94 | struct sk_buff * (*dequeue)(struct Qdisc *); | |
95 | int (*requeue)(struct sk_buff *, struct Qdisc *); | |
96 | unsigned int (*drop)(struct Qdisc *); | |
97 | ||
98 | int (*init)(struct Qdisc *, struct rtattr *arg); | |
99 | void (*reset)(struct Qdisc *); | |
100 | void (*destroy)(struct Qdisc *); | |
101 | int (*change)(struct Qdisc *, struct rtattr *arg); | |
102 | ||
103 | int (*dump)(struct Qdisc *, struct sk_buff *); | |
104 | int (*dump_stats)(struct Qdisc *, struct gnet_dump *); | |
105 | ||
106 | struct module *owner; | |
107 | }; | |
108 | ||
109 | ||
110 | struct tcf_result | |
111 | { | |
112 | unsigned long class; | |
113 | u32 classid; | |
114 | }; | |
115 | ||
116 | struct tcf_proto_ops | |
117 | { | |
118 | struct tcf_proto_ops *next; | |
119 | char kind[IFNAMSIZ]; | |
120 | ||
121 | int (*classify)(struct sk_buff*, struct tcf_proto*, | |
122 | struct tcf_result *); | |
123 | int (*init)(struct tcf_proto*); | |
124 | void (*destroy)(struct tcf_proto*); | |
125 | ||
126 | unsigned long (*get)(struct tcf_proto*, u32 handle); | |
127 | void (*put)(struct tcf_proto*, unsigned long); | |
128 | int (*change)(struct tcf_proto*, unsigned long, | |
129 | u32 handle, struct rtattr **, | |
130 | unsigned long *); | |
131 | int (*delete)(struct tcf_proto*, unsigned long); | |
132 | void (*walk)(struct tcf_proto*, struct tcf_walker *arg); | |
133 | ||
134 | /* rtnetlink specific */ | |
135 | int (*dump)(struct tcf_proto*, unsigned long, | |
136 | struct sk_buff *skb, struct tcmsg*); | |
137 | ||
138 | struct module *owner; | |
139 | }; | |
140 | ||
141 | struct tcf_proto | |
142 | { | |
143 | /* Fast access part */ | |
144 | struct tcf_proto *next; | |
145 | void *root; | |
146 | int (*classify)(struct sk_buff*, struct tcf_proto*, | |
147 | struct tcf_result *); | |
148 | u32 protocol; | |
149 | ||
150 | /* All the rest */ | |
151 | u32 prio; | |
152 | u32 classid; | |
153 | struct Qdisc *q; | |
154 | void *data; | |
155 | struct tcf_proto_ops *ops; | |
156 | }; | |
157 | ||
158 | ||
159 | extern void qdisc_lock_tree(struct net_device *dev); | |
160 | extern void qdisc_unlock_tree(struct net_device *dev); | |
161 | ||
162 | #define sch_tree_lock(q) qdisc_lock_tree((q)->dev) | |
163 | #define sch_tree_unlock(q) qdisc_unlock_tree((q)->dev) | |
164 | #define tcf_tree_lock(tp) qdisc_lock_tree((tp)->q->dev) | |
165 | #define tcf_tree_unlock(tp) qdisc_unlock_tree((tp)->q->dev) | |
166 | ||
167 | static inline void | |
168 | tcf_destroy(struct tcf_proto *tp) | |
169 | { | |
170 | tp->ops->destroy(tp); | |
171 | module_put(tp->ops->owner); | |
172 | kfree(tp); | |
173 | } | |
174 | ||
175 | #endif |