tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
14struct Qdisc_ops;
15struct qdisc_walker;
16struct tcf_walker;
17struct module;
18
19struct qdisc_rate_table
20{
21 struct tc_ratespec rate;
22 u32 data[256];
23 struct qdisc_rate_table *next;
24 int refcnt;
25};
26
27struct 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
58struct 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
86struct 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
110struct tcf_result
111{
112 unsigned long class;
113 u32 classid;
114};
115
116struct 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
141struct 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
159extern void qdisc_lock_tree(struct net_device *dev);
160extern 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
167static inline void
168tcf_destroy(struct tcf_proto *tp)
169{
170 tp->ops->destroy(tp);
171 module_put(tp->ops->owner);
172 kfree(tp);
173}
174
175#endif