1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NET_TC_POLICE_H
3 #define __NET_TC_POLICE_H
4 
5 #include <net/act_api.h>
6 
7 struct tcf_police_params {
8 	int			tcfp_result;
9 	u32			tcfp_ewma_rate;
10 	s64			tcfp_burst;
11 	u32			tcfp_mtu;
12 	s64			tcfp_mtu_ptoks;
13 	struct psched_ratecfg	rate;
14 	bool			rate_present;
15 	struct psched_ratecfg	peak;
16 	bool			peak_present;
17 	struct rcu_head rcu;
18 };
19 
20 struct tcf_police {
21 	struct tc_action	common;
22 	struct tcf_police_params __rcu *params;
23 
24 	spinlock_t		tcfp_lock ____cacheline_aligned_in_smp;
25 	s64			tcfp_toks;
26 	s64			tcfp_ptoks;
27 	s64			tcfp_t_c;
28 };
29 
30 #define to_police(pc) ((struct tcf_police *)pc)
31 
32 /* old policer structure from before tc actions */
33 struct tc_police_compat {
34 	u32			index;
35 	int			action;
36 	u32			limit;
37 	u32			burst;
38 	u32			mtu;
39 	struct tc_ratespec	rate;
40 	struct tc_ratespec	peakrate;
41 };
42 
is_tcf_police(const struct tc_action * act)43 static inline bool is_tcf_police(const struct tc_action *act)
44 {
45 #ifdef CONFIG_NET_CLS_ACT
46 	if (act->ops && act->ops->id == TCA_ID_POLICE)
47 		return true;
48 #endif
49 	return false;
50 }
51 
tcf_police_rate_bytes_ps(const struct tc_action * act)52 static inline u64 tcf_police_rate_bytes_ps(const struct tc_action *act)
53 {
54 	struct tcf_police *police = to_police(act);
55 	struct tcf_police_params *params;
56 
57 	params = rcu_dereference_bh_rtnl(police->params);
58 	return params->rate.rate_bytes_ps;
59 }
60 
tcf_police_tcfp_burst(const struct tc_action * act)61 static inline s64 tcf_police_tcfp_burst(const struct tc_action *act)
62 {
63 	struct tcf_police *police = to_police(act);
64 	struct tcf_police_params *params;
65 
66 	params = rcu_dereference_bh_rtnl(police->params);
67 	return params->tcfp_burst;
68 }
69 
70 #endif /* __NET_TC_POLICE_H */
71