1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NET_ACT_API_H
3 #define __NET_ACT_API_H
6 * Public action API for classifiers/qdiscs
9 #include <net/sch_generic.h>
10 #include <net/pkt_sched.h>
11 #include <net/net_namespace.h>
12 #include <net/netns/generic.h>
16 struct idr action_idr
;
22 const struct tc_action_ops
*ops
;
23 __u32 type
; /* for backward compat(TCA_OLD_COMPAT) */
25 struct list_head list
;
26 struct tcf_idrinfo
*idrinfo
;
34 struct gnet_stats_basic_packed tcfa_bstats
;
35 struct gnet_stats_queue tcfa_qstats
;
36 struct net_rate_estimator __rcu
*tcfa_rate_est
;
38 struct gnet_stats_basic_cpu __percpu
*cpu_bstats
;
39 struct gnet_stats_queue __percpu
*cpu_qstats
;
40 struct tc_cookie
*act_cookie
;
41 struct tcf_chain
*goto_chain
;
43 #define tcf_index common.tcfa_index
44 #define tcf_refcnt common.tcfa_refcnt
45 #define tcf_bindcnt common.tcfa_bindcnt
46 #define tcf_capab common.tcfa_capab
47 #define tcf_action common.tcfa_action
48 #define tcf_tm common.tcfa_tm
49 #define tcf_bstats common.tcfa_bstats
50 #define tcf_qstats common.tcfa_qstats
51 #define tcf_rate_est common.tcfa_rate_est
52 #define tcf_lock common.tcfa_lock
54 /* Update lastuse only if needed, to avoid dirtying a cache line.
55 * We use a temp variable to avoid fetching jiffies twice.
57 static inline void tcf_lastuse_update(struct tcf_t
*tm
)
59 unsigned long now
= jiffies
;
61 if (tm
->lastuse
!= now
)
63 if (unlikely(!tm
->firstuse
))
67 static inline void tcf_tm_dump(struct tcf_t
*dtm
, const struct tcf_t
*stm
)
69 dtm
->install
= jiffies_to_clock_t(jiffies
- stm
->install
);
70 dtm
->lastuse
= jiffies_to_clock_t(jiffies
- stm
->lastuse
);
71 dtm
->firstuse
= jiffies_to_clock_t(jiffies
- stm
->firstuse
);
72 dtm
->expires
= jiffies_to_clock_t(stm
->expires
);
75 #ifdef CONFIG_NET_CLS_ACT
77 #define ACT_P_CREATED 1
78 #define ACT_P_DELETED 1
80 struct tc_action_ops
{
81 struct list_head head
;
83 __u32 type
; /* TBD to match kind */
86 int (*act
)(struct sk_buff
*, const struct tc_action
*,
88 int (*dump
)(struct sk_buff
*, struct tc_action
*, int, int);
89 void (*cleanup
)(struct tc_action
*, int bind
);
90 int (*lookup
)(struct net
*, struct tc_action
**, u32
);
91 int (*init
)(struct net
*net
, struct nlattr
*nla
,
92 struct nlattr
*est
, struct tc_action
**act
, int ovr
,
94 int (*walk
)(struct net
*, struct sk_buff
*,
95 struct netlink_callback
*, int, const struct tc_action_ops
*);
96 void (*stats_update
)(struct tc_action
*, u64
, u32
, u64
);
97 int (*get_dev
)(const struct tc_action
*a
, struct net
*net
,
98 struct net_device
**mirred_dev
);
101 struct tc_action_net
{
102 struct tcf_idrinfo
*idrinfo
;
103 const struct tc_action_ops
*ops
;
107 int tc_action_net_init(struct tc_action_net
*tn
,
108 const struct tc_action_ops
*ops
)
112 tn
->idrinfo
= kmalloc(sizeof(*tn
->idrinfo
), GFP_KERNEL
);
116 spin_lock_init(&tn
->idrinfo
->lock
);
117 idr_init(&tn
->idrinfo
->action_idr
);
121 void tcf_idrinfo_destroy(const struct tc_action_ops
*ops
,
122 struct tcf_idrinfo
*idrinfo
);
124 static inline void tc_action_net_exit(struct tc_action_net
*tn
)
127 tcf_idrinfo_destroy(tn
->ops
, tn
->idrinfo
);
132 int tcf_generic_walker(struct tc_action_net
*tn
, struct sk_buff
*skb
,
133 struct netlink_callback
*cb
, int type
,
134 const struct tc_action_ops
*ops
);
135 int tcf_idr_search(struct tc_action_net
*tn
, struct tc_action
**a
, u32 index
);
136 bool tcf_idr_check(struct tc_action_net
*tn
, u32 index
, struct tc_action
**a
,
138 int tcf_idr_create(struct tc_action_net
*tn
, u32 index
, struct nlattr
*est
,
139 struct tc_action
**a
, const struct tc_action_ops
*ops
,
140 int bind
, bool cpustats
);
141 void tcf_idr_cleanup(struct tc_action
*a
, struct nlattr
*est
);
142 void tcf_idr_insert(struct tc_action_net
*tn
, struct tc_action
*a
);
144 int __tcf_idr_release(struct tc_action
*a
, bool bind
, bool strict
);
146 static inline int tcf_idr_release(struct tc_action
*a
, bool bind
)
148 return __tcf_idr_release(a
, bind
, false);
151 int tcf_register_action(struct tc_action_ops
*a
, struct pernet_operations
*ops
);
152 int tcf_unregister_action(struct tc_action_ops
*a
,
153 struct pernet_operations
*ops
);
154 int tcf_action_destroy(struct list_head
*actions
, int bind
);
155 int tcf_action_exec(struct sk_buff
*skb
, struct tc_action
**actions
,
156 int nr_actions
, struct tcf_result
*res
);
157 int tcf_action_init(struct net
*net
, struct tcf_proto
*tp
, struct nlattr
*nla
,
158 struct nlattr
*est
, char *name
, int ovr
, int bind
,
159 struct list_head
*actions
);
160 struct tc_action
*tcf_action_init_1(struct net
*net
, struct tcf_proto
*tp
,
161 struct nlattr
*nla
, struct nlattr
*est
,
162 char *name
, int ovr
, int bind
);
163 int tcf_action_dump(struct sk_buff
*skb
, struct list_head
*, int, int);
164 int tcf_action_dump_old(struct sk_buff
*skb
, struct tc_action
*a
, int, int);
165 int tcf_action_dump_1(struct sk_buff
*skb
, struct tc_action
*a
, int, int);
166 int tcf_action_copy_stats(struct sk_buff
*, struct tc_action
*, int);
168 #endif /* CONFIG_NET_CLS_ACT */
170 static inline void tcf_action_stats_update(struct tc_action
*a
, u64 bytes
,
171 u64 packets
, u64 lastuse
)
173 #ifdef CONFIG_NET_CLS_ACT
174 if (!a
->ops
->stats_update
)
177 a
->ops
->stats_update(a
, bytes
, packets
, lastuse
);