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/ usr / src / linux-headers-6.8.0-64 / include / net / tc_act /

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tc_police.h

/* 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;
	s64			tcfp_pkt_burst;
	struct psched_ratecfg	rate;
	bool			rate_present;
	struct psched_ratecfg	peak;
	bool			peak_present;
	struct psched_pktrate	ppsrate;
	bool			pps_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_pkttoks;
	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 u64 tcf_police_rate_pkt_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->ppsrate.rate_pkts_ps;
}

static inline u32 tcf_police_burst_pkt(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" pkts     "burst" nanoseconds
	 *  ------------ *  -------------------
	 *    1 second          2^6 ticks
	 *
	 * ------------------------------------
	 *        NSEC_PER_SEC nanoseconds
	 *        ------------------------
	 *              2^6 ticks
	 *
	 *    "rate" pkts    "burst" nanoseconds            2^6 ticks
	 *  = ------------ * ------------------- * ------------------------
	 *      1 second          2^6 ticks        NSEC_PER_SEC nanoseconds
	 *
	 *   "rate" * "burst"
	 * = ---------------- pkts/nanosecond
	 *    NSEC_PER_SEC^2
	 *
	 *
	 *   "rate" * "burst"
	 * = ---------------- pkts/second
	 *     NSEC_PER_SEC
	 */
	burst = div_u64(params->tcfp_pkt_burst * params->ppsrate.rate_pkts_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;
}

static inline u64 tcf_police_peakrate_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->peak.rate_bytes_ps;
}

static inline u32 tcf_police_tcfp_ewma_rate(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_ewma_rate;
}

static inline u16 tcf_police_rate_overhead(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.overhead;
}

#endif /* __NET_TC_POLICE_H */

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/root	drwxr-xr-x	2025-07-18 06:24:58
..	dir	-	root/root	drwxr-xr-x	2025-07-18 06:24:58
tc_bpf.h	text/x-c	456 B	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_connmark.h	text/x-c	392 B	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_csum.h	text/x-c	798 B	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_ct.h	text/x-c	2.36 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_ctinfo.h	text/x-c	585 B	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_defact.h	text/x-c	278 B	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_gact.h	text/x-c	1.69 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_gate.h	text/x-c	2.62 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_ife.h	text/x-c	2.09 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_mirred.h	text/x-c	1.48 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_mpls.h	text/x-c	1.96 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_nat.h	text/x-c	404 B	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_pedit.h	text/x-c	2.32 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_police.h	text/x-c	4.78 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_sample.h	text/x-c	918 B	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_skbedit.h	text/x-c	3.08 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_skbmod.h	text/x-c	558 B	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_tunnel_key.h	text/x-c	2.11 KB	root/root	-rw-r--r--	2024-03-11 02:08:09
tc_vlan.h	text/x-c	2.01 KB	root/root	-rw-r--r--	2024-03-11 02:08:09