include/net/gen_stats.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NET_GEN_STATS_H
   3 #define __NET_GEN_STATS_H
   4
   5 #include <linux/gen_stats.h>
   6 #include <linux/socket.h>
   7 #include <linux/rtnetlink.h>
   8 #include <linux/pkt_sched.h>
   9
  10 /* Note: this used to be in include/uapi/linux/gen_stats.h */
  11 struct gnet_stats_basic_packed {
  12         __u64   bytes;
  13         __u64   packets;
  14 };
  15
  16 struct gnet_stats_basic_cpu {
  17         struct gnet_stats_basic_packed bstats;
  18         struct u64_stats_sync syncp;
  19 } __aligned(2 * sizeof(u64));
  20
  21 struct net_rate_estimator;
  22
  23 struct gnet_dump {
  24         spinlock_t *      lock;
  25         struct sk_buff *  skb;
  26         struct nlattr *   tail;
  27
  28         /* Backward compatibility */
  29         int               compat_tc_stats;
  30         int               compat_xstats;
  31         int               padattr;
  32         void *            xstats;
  33         int               xstats_len;
  34         struct tc_stats   tc_stats;
  35 };
  36
  37 int gnet_stats_start_copy(struct sk_buff *skb, int type, spinlock_t *lock,
  38                           struct gnet_dump *d, int padattr);
  39
  40 int gnet_stats_start_copy_compat(struct sk_buff *skb, int type,
  41                                  int tc_stats_type, int xstats_type,
  42                                  spinlock_t *lock, struct gnet_dump *d,
  43                                  int padattr);
  44
  45 int gnet_stats_copy_basic(const seqcount_t *running,
  46                           struct gnet_dump *d,
  47                           struct gnet_stats_basic_cpu __percpu *cpu,
  48                           struct gnet_stats_basic_packed *b);
  49 void __gnet_stats_copy_basic(const seqcount_t *running,
  50                              struct gnet_stats_basic_packed *bstats,
  51                              struct gnet_stats_basic_cpu __percpu *cpu,
  52                              struct gnet_stats_basic_packed *b);
  53 int gnet_stats_copy_basic_hw(const seqcount_t *running,
  54                              struct gnet_dump *d,
  55                              struct gnet_stats_basic_cpu __percpu *cpu,
  56                              struct gnet_stats_basic_packed *b);
  57 int gnet_stats_copy_rate_est(struct gnet_dump *d,
  58                              struct net_rate_estimator __rcu **ptr);
  59 int gnet_stats_copy_queue(struct gnet_dump *d,
  60                           struct gnet_stats_queue __percpu *cpu_q,
  61                           struct gnet_stats_queue *q, __u32 qlen);
  62 void __gnet_stats_copy_queue(struct gnet_stats_queue *qstats,
  63                              const struct gnet_stats_queue __percpu *cpu_q,
  64                              const struct gnet_stats_queue *q, __u32 qlen);
  65 int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
  66
  67 int gnet_stats_finish_copy(struct gnet_dump *d);
  68
  69 int gen_new_estimator(struct gnet_stats_basic_packed *bstats,
  70                       struct gnet_stats_basic_cpu __percpu *cpu_bstats,
  71                       struct net_rate_estimator __rcu **rate_est,
  72                       spinlock_t *lock,
  73                       seqcount_t *running, struct nlattr *opt);
  74 void gen_kill_estimator(struct net_rate_estimator __rcu **ptr);
  75 int gen_replace_estimator(struct gnet_stats_basic_packed *bstats,
  76                           struct gnet_stats_basic_cpu __percpu *cpu_bstats,
  77                           struct net_rate_estimator __rcu **ptr,
  78                           spinlock_t *lock,
  79                           seqcount_t *running, struct nlattr *opt);
  80 bool gen_estimator_active(struct net_rate_estimator __rcu **ptr);
  81 bool gen_estimator_read(struct net_rate_estimator __rcu **ptr,
  82                         struct gnet_stats_rate_est64 *sample);
  83 #endif