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1 /*
2  * netlink/route/tc.h		Traffic Control
3  *
4  *	This library is free software; you can redistribute it and/or
5  *	modify it under the terms of the GNU Lesser General Public
6  *	License as published by the Free Software Foundation version 2.1
7  *	of the License.
8  *
9  * Copyright (c) 2003-2011 Thomas Graf <tgraf@suug.ch>
10  */
11 
12 #ifndef NETLINK_TC_H_
13 #define NETLINK_TC_H_
14 
15 #include <netlink/netlink.h>
16 #include <netlink/cache.h>
17 #include <netlink/data.h>
18 #include <netlink/route/link.h>
19 #include <linux/pkt_sched.h>
20 #include <linux/pkt_cls.h>
21 
22 #ifdef __cplusplus
23 extern "C" {
24 #endif
25 
26 enum rtnl_tc_type {
27 	RTNL_TC_TYPE_QDISC,
28 	RTNL_TC_TYPE_CLASS,
29 	RTNL_TC_TYPE_CLS,
30 	RTNL_TC_TYPE_ACT,
31 	__RTNL_TC_TYPE_MAX,
32 };
33 
34 #define RTNL_TC_TYPE_MAX (__RTNL_TC_TYPE_MAX - 1)
35 
36 /**
37  * Compute tc handle based on major and minor parts
38  * @ingroup tc
39  */
40 #define TC_HANDLE(maj, min)	(TC_H_MAJ((maj) << 16) | TC_H_MIN(min))
41 
42 /**
43  * Traffic control object
44  * @ingroup tc
45  */
46 struct rtnl_tc;
47 
48 /**
49  * Macro to cast qdisc/class/classifier to tc object
50  * @ingroup tc
51  *
52  * @code
53  * rtnl_tc_set_mpu(TC_CAST(qdisc), 40);
54  * @endcode
55  */
56 #define TC_CAST(ptr)		((struct rtnl_tc *) (ptr))
57 
58 /**
59  * Traffic control statistical identifier
60  * @ingroup tc
61  *
62  * @code
63  * uint64_t n = rtnl_tc_get_stat(TC_CAST(class), RTNL_TC_PACKETS);
64  * @endcode
65  */
66 enum rtnl_tc_stat {
67 	RTNL_TC_PACKETS,	/**< Number of packets seen */
68 	RTNL_TC_BYTES,		/**< Total bytes seen */
69 	RTNL_TC_RATE_BPS,	/**< Current bits/s (rate estimator) */
70 	RTNL_TC_RATE_PPS,	/**< Current packet/s (rate estimator) */
71 	RTNL_TC_QLEN,		/**< Current queue length */
72 	RTNL_TC_BACKLOG,	/**< Current backlog length */
73 	RTNL_TC_DROPS,		/**< Total number of packets dropped */
74 	RTNL_TC_REQUEUES,	/**< Total number of requeues */
75 	RTNL_TC_OVERLIMITS,	/**< Total number of overlimits */
76 	__RTNL_TC_STATS_MAX,
77 };
78 
79 #define RTNL_TC_STATS_MAX (__RTNL_TC_STATS_MAX - 1)
80 
81 extern void		rtnl_tc_set_ifindex(struct rtnl_tc *, int);
82 extern int		rtnl_tc_get_ifindex(struct rtnl_tc *);
83 extern void		rtnl_tc_set_link(struct rtnl_tc *, struct rtnl_link *);
84 extern struct rtnl_link *rtnl_tc_get_link(struct rtnl_tc *);
85 extern void		rtnl_tc_set_mtu(struct rtnl_tc *, uint32_t);
86 extern uint32_t		rtnl_tc_get_mtu(struct rtnl_tc *);
87 extern void		rtnl_tc_set_mpu(struct rtnl_tc *, uint32_t);
88 extern uint32_t		rtnl_tc_get_mpu(struct rtnl_tc *);
89 extern void		rtnl_tc_set_overhead(struct rtnl_tc *, uint32_t);
90 extern uint32_t		rtnl_tc_get_overhead(struct rtnl_tc *);
91 extern void		rtnl_tc_set_linktype(struct rtnl_tc *, uint32_t);
92 extern uint32_t		rtnl_tc_get_linktype(struct rtnl_tc *);
93 extern void		rtnl_tc_set_handle(struct rtnl_tc *, uint32_t);
94 extern uint32_t		rtnl_tc_get_handle(struct rtnl_tc *);
95 extern void		rtnl_tc_set_parent(struct rtnl_tc *, uint32_t);
96 extern uint32_t		rtnl_tc_get_parent(struct rtnl_tc *);
97 extern int		rtnl_tc_set_kind(struct rtnl_tc *, const char *);
98 extern char *		rtnl_tc_get_kind(struct rtnl_tc *);
99 extern uint64_t		rtnl_tc_get_stat(struct rtnl_tc *, enum rtnl_tc_stat);
100 
101 extern int		rtnl_tc_calc_txtime(int, int);
102 extern int		rtnl_tc_calc_bufsize(int, int);
103 extern int		rtnl_tc_calc_cell_log(int);
104 
105 extern int		rtnl_tc_read_classid_file(void);
106 extern char *		rtnl_tc_handle2str(uint32_t, char *, size_t);
107 extern int		rtnl_tc_str2handle(const char *, uint32_t *);
108 extern int		rtnl_classid_generate(const char *, uint32_t *,
109 					      uint32_t);
110 
111 #ifdef __cplusplus
112 }
113 #endif
114 
115 #endif
116