include/net/tc_act/tc_police.h

   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
  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
  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
  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 */