forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
110 lines
2.6 KiB
110 lines
2.6 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
|
#ifndef __NET_TC_POLICE_H |
|
#define __NET_TC_POLICE_H |
|
|
|
#include <net/act_api.h> |
|
|
|
struct tcf_police_params { |
|
int tcfp_result; |
|
u32 tcfp_ewma_rate; |
|
s64 tcfp_burst; |
|
u32 tcfp_mtu; |
|
s64 tcfp_mtu_ptoks; |
|
struct psched_ratecfg rate; |
|
bool rate_present; |
|
struct psched_ratecfg peak; |
|
bool peak_present; |
|
struct rcu_head rcu; |
|
}; |
|
|
|
struct tcf_police { |
|
struct tc_action common; |
|
struct tcf_police_params __rcu *params; |
|
|
|
spinlock_t tcfp_lock ____cacheline_aligned_in_smp; |
|
s64 tcfp_toks; |
|
s64 tcfp_ptoks; |
|
s64 tcfp_t_c; |
|
}; |
|
|
|
#define to_police(pc) ((struct tcf_police *)pc) |
|
|
|
/* old policer structure from before tc actions */ |
|
struct tc_police_compat { |
|
u32 index; |
|
int action; |
|
u32 limit; |
|
u32 burst; |
|
u32 mtu; |
|
struct tc_ratespec rate; |
|
struct tc_ratespec peakrate; |
|
}; |
|
|
|
static inline bool is_tcf_police(const struct tc_action *act) |
|
{ |
|
#ifdef CONFIG_NET_CLS_ACT |
|
if (act->ops && act->ops->id == TCA_ID_POLICE) |
|
return true; |
|
#endif |
|
return false; |
|
} |
|
|
|
static inline u64 tcf_police_rate_bytes_ps(const struct tc_action *act) |
|
{ |
|
struct tcf_police *police = to_police(act); |
|
struct tcf_police_params *params; |
|
|
|
params = rcu_dereference_protected(police->params, |
|
lockdep_is_held(&police->tcf_lock)); |
|
return params->rate.rate_bytes_ps; |
|
} |
|
|
|
static inline u32 tcf_police_burst(const struct tc_action *act) |
|
{ |
|
struct tcf_police *police = to_police(act); |
|
struct tcf_police_params *params; |
|
u32 burst; |
|
|
|
params = rcu_dereference_protected(police->params, |
|
lockdep_is_held(&police->tcf_lock)); |
|
|
|
/* |
|
* "rate" bytes "burst" nanoseconds |
|
* ------------ * ------------------- |
|
* 1 second 2^6 ticks |
|
* |
|
* ------------------------------------ |
|
* NSEC_PER_SEC nanoseconds |
|
* ------------------------ |
|
* 2^6 ticks |
|
* |
|
* "rate" bytes "burst" nanoseconds 2^6 ticks |
|
* = ------------ * ------------------- * ------------------------ |
|
* 1 second 2^6 ticks NSEC_PER_SEC nanoseconds |
|
* |
|
* "rate" * "burst" |
|
* = ---------------- bytes/nanosecond |
|
* NSEC_PER_SEC^2 |
|
* |
|
* |
|
* "rate" * "burst" |
|
* = ---------------- bytes/second |
|
* NSEC_PER_SEC |
|
*/ |
|
burst = div_u64(params->tcfp_burst * params->rate.rate_bytes_ps, |
|
NSEC_PER_SEC); |
|
|
|
return burst; |
|
} |
|
|
|
static inline u32 tcf_police_tcfp_mtu(const struct tc_action *act) |
|
{ |
|
struct tcf_police *police = to_police(act); |
|
struct tcf_police_params *params; |
|
|
|
params = rcu_dereference_protected(police->params, |
|
lockdep_is_held(&police->tcf_lock)); |
|
return params->tcfp_mtu; |
|
} |
|
|
|
#endif /* __NET_TC_POLICE_H */
|
|
|