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
;
23 const struct tc_action_ops
*ops
;
24 __u32 type
; /* for backward compat(TCA_OLD_COMPAT) */
26 struct list_head list
;
27 struct tcf_idrinfo
*idrinfo
;
35 struct gnet_stats_basic_packed tcfa_bstats
;
36 struct gnet_stats_queue tcfa_qstats
;
37 struct net_rate_estimator __rcu
*tcfa_rate_est
;
39 struct gnet_stats_basic_cpu __percpu
*cpu_bstats
;
40 struct gnet_stats_queue __percpu
*cpu_qstats
;
41 struct tc_cookie
*act_cookie
;
42 struct tcf_chain
*goto_chain
;
44 #define tcf_index common.tcfa_index
45 #define tcf_refcnt common.tcfa_refcnt
46 #define tcf_bindcnt common.tcfa_bindcnt
47 #define tcf_capab common.tcfa_capab
48 #define tcf_action common.tcfa_action
49 #define tcf_tm common.tcfa_tm
50 #define tcf_bstats common.tcfa_bstats
51 #define tcf_qstats common.tcfa_qstats
52 #define tcf_rate_est common.tcfa_rate_est
53 #define tcf_lock common.tcfa_lock
55 /* Update lastuse only if needed, to avoid dirtying a cache line.
56 * We use a temp variable to avoid fetching jiffies twice.
58 static inline void tcf_lastuse_update(struct tcf_t
*tm
)
60 unsigned long now
= jiffies
;
62 if (tm
->lastuse
!= now
)
64 if (unlikely(!tm
->firstuse
))
68 static inline void tcf_tm_dump(struct tcf_t
*dtm
, const struct tcf_t
*stm
)
70 dtm
->install
= jiffies_to_clock_t(jiffies
- stm
->install
);
71 dtm
->lastuse
= jiffies_to_clock_t(jiffies
- stm
->lastuse
);
72 dtm
->firstuse
= jiffies_to_clock_t(jiffies
- stm
->firstuse
);
73 dtm
->expires
= jiffies_to_clock_t(stm
->expires
);
76 #ifdef CONFIG_NET_CLS_ACT
78 #define ACT_P_CREATED 1
79 #define ACT_P_DELETED 1
81 struct tc_action_ops
{
82 struct list_head head
;
84 __u32 type
; /* TBD to match kind */
87 int (*act
)(struct sk_buff
*, const struct tc_action
*,
89 int (*dump
)(struct sk_buff
*, struct tc_action
*, int, int);
90 void (*cleanup
)(struct tc_action
*, int bind
);
91 int (*lookup
)(struct net
*, struct tc_action
**, u32
);
92 int (*init
)(struct net
*net
, struct nlattr
*nla
,
93 struct nlattr
*est
, struct tc_action
**act
, int ovr
,
95 int (*walk
)(struct net
*, struct sk_buff
*,
96 struct netlink_callback
*, int, const struct tc_action_ops
*);
97 void (*stats_update
)(struct tc_action
*, u64
, u32
, u64
);
98 struct net_device
*(*get_dev
)(const struct tc_action
*a
);
101 struct tc_action_net
{
102 struct tcf_idrinfo
*idrinfo
;
103 const struct tc_action_ops
*ops
;
107 int tc_action_net_init(struct net
*net
, struct tc_action_net
*tn
,
108 const struct tc_action_ops
*ops
)
112 tn
->idrinfo
= kmalloc(sizeof(*tn
->idrinfo
), GFP_KERNEL
);
116 tn
->idrinfo
->net
= net
;
117 spin_lock_init(&tn
->idrinfo
->lock
);
118 idr_init(&tn
->idrinfo
->action_idr
);
122 void tcf_idrinfo_destroy(const struct tc_action_ops
*ops
,
123 struct tcf_idrinfo
*idrinfo
);
125 static inline void tc_action_net_exit(struct tc_action_net
*tn
)
128 tcf_idrinfo_destroy(tn
->ops
, tn
->idrinfo
);
133 int tcf_generic_walker(struct tc_action_net
*tn
, struct sk_buff
*skb
,
134 struct netlink_callback
*cb
, int type
,
135 const struct tc_action_ops
*ops
);
136 int tcf_idr_search(struct tc_action_net
*tn
, struct tc_action
**a
, u32 index
);
137 bool tcf_idr_check(struct tc_action_net
*tn
, u32 index
, struct tc_action
**a
,
139 int tcf_idr_create(struct tc_action_net
*tn
, u32 index
, struct nlattr
*est
,
140 struct tc_action
**a
, const struct tc_action_ops
*ops
,
141 int bind
, bool cpustats
);
142 void tcf_idr_cleanup(struct tc_action
*a
, struct nlattr
*est
);
143 void tcf_idr_insert(struct tc_action_net
*tn
, struct tc_action
*a
);
145 int __tcf_idr_release(struct tc_action
*a
, bool bind
, bool strict
);
147 static inline int tcf_idr_release(struct tc_action
*a
, bool bind
)
149 return __tcf_idr_release(a
, bind
, false);
152 int tcf_register_action(struct tc_action_ops
*a
, struct pernet_operations
*ops
);
153 int tcf_unregister_action(struct tc_action_ops
*a
,
154 struct pernet_operations
*ops
);
155 int tcf_action_destroy(struct list_head
*actions
, int bind
);
156 int tcf_action_exec(struct sk_buff
*skb
, struct tc_action
**actions
,
157 int nr_actions
, struct tcf_result
*res
);
158 int tcf_action_init(struct net
*net
, struct tcf_proto
*tp
, struct nlattr
*nla
,
159 struct nlattr
*est
, char *name
, int ovr
, int bind
,
160 struct list_head
*actions
);
161 struct tc_action
*tcf_action_init_1(struct net
*net
, struct tcf_proto
*tp
,
162 struct nlattr
*nla
, struct nlattr
*est
,
163 char *name
, int ovr
, int bind
);
164 int tcf_action_dump(struct sk_buff
*skb
, struct list_head
*, int, int);
165 int tcf_action_dump_old(struct sk_buff
*skb
, struct tc_action
*a
, int, int);
166 int tcf_action_dump_1(struct sk_buff
*skb
, struct tc_action
*a
, int, int);
167 int tcf_action_copy_stats(struct sk_buff
*, struct tc_action
*, int);
169 #endif /* CONFIG_NET_CLS_ACT */
171 static inline void tcf_action_stats_update(struct tc_action
*a
, u64 bytes
,
172 u64 packets
, u64 lastuse
)
174 #ifdef CONFIG_NET_CLS_ACT
175 if (!a
->ops
->stats_update
)
178 a
->ops
->stats_update(a
, bytes
, packets
, lastuse
);
182 typedef int tc_setup_cb_t(enum tc_setup_type type
,
183 void *type_data
, void *cb_priv
);
185 #ifdef CONFIG_NET_CLS_ACT
186 int tc_setup_cb_egdev_register(const struct net_device
*dev
,
187 tc_setup_cb_t
*cb
, void *cb_priv
);
188 void tc_setup_cb_egdev_unregister(const struct net_device
*dev
,
189 tc_setup_cb_t
*cb
, void *cb_priv
);
190 int tc_setup_cb_egdev_call(const struct net_device
*dev
,
191 enum tc_setup_type type
, void *type_data
,
195 int tc_setup_cb_egdev_register(const struct net_device
*dev
,
196 tc_setup_cb_t
*cb
, void *cb_priv
)
202 void tc_setup_cb_egdev_unregister(const struct net_device
*dev
,
203 tc_setup_cb_t
*cb
, void *cb_priv
)
208 int tc_setup_cb_egdev_call(const struct net_device
*dev
,
209 enum tc_setup_type type
, void *type_data
,