1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __NET_TC_POLICE_H
3 #define __NET_TC_POLICE_H
5 #include <net/act_api.h>
7 struct tcf_police_params {
13 struct psched_ratecfg rate;
15 struct psched_ratecfg peak;
21 struct tc_action common;
22 struct tcf_police_params __rcu *params;
24 spinlock_t tcfp_lock ____cacheline_aligned_in_smp;
30 #define to_police(pc) ((struct tcf_police *)pc)
32 /* old policer structure from before tc actions */
33 struct tc_police_compat {
39 struct tc_ratespec rate;
40 struct tc_ratespec peakrate;
43 static inline bool is_tcf_police(const struct tc_action *act)
45 #ifdef CONFIG_NET_CLS_ACT
46 if (act->ops && act->ops->id == TCA_ID_POLICE)
52 static inline u64 tcf_police_rate_bytes_ps(const struct tc_action *act)
54 struct tcf_police *police = to_police(act);
55 struct tcf_police_params *params;
57 params = rcu_dereference_protected(police->params,
58 lockdep_is_held(&police->tcf_lock));
59 return params->rate.rate_bytes_ps;
62 static inline u32 tcf_police_burst(const struct tc_action *act)
64 struct tcf_police *police = to_police(act);
65 struct tcf_police_params *params;
68 params = rcu_dereference_protected(police->params,
69 lockdep_is_held(&police->tcf_lock));
72 * "rate" bytes "burst" nanoseconds
73 * ------------ * -------------------
76 * ------------------------------------
77 * NSEC_PER_SEC nanoseconds
78 * ------------------------
81 * "rate" bytes "burst" nanoseconds 2^6 ticks
82 * = ------------ * ------------------- * ------------------------
83 * 1 second 2^6 ticks NSEC_PER_SEC nanoseconds
86 * = ---------------- bytes/nanosecond
91 * = ---------------- bytes/second
94 burst = div_u64(params->tcfp_burst * params->rate.rate_bytes_ps,
100 static inline u32 tcf_police_tcfp_mtu(const struct tc_action *act)
102 struct tcf_police *police = to_police(act);
103 struct tcf_police_params *params;
105 params = rcu_dereference_protected(police->params,
106 lockdep_is_held(&police->tcf_lock));
107 return params->tcfp_mtu;
110 #endif /* __NET_TC_POLICE_H */