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 struct gnet_stats_basic_cpu {
  11         struct gnet_stats_basic_packed bstats;
  12         struct u64_stats_sync syncp;
  13 } __aligned(2 * sizeof(u64));
  14
  15 struct net_rate_estimator;
  16
  17 struct gnet_dump {
  18         spinlock_t *      lock;
  19         struct sk_buff *  skb;
  20         struct nlattr *   tail;
  21
  22         /* Backward compatibility */
  23         int               compat_tc_stats;
  24         int               compat_xstats;
  25         int               padattr;
  26         void *            xstats;
  27         int               xstats_len;
  28         struct tc_stats   tc_stats;
  29 };
  30
  31 int gnet_stats_start_copy(struct sk_buff *skb, int type, spinlock_t *lock,
  32                           struct gnet_dump *d, int padattr);
  33
  34 int gnet_stats_start_copy_compat(struct sk_buff *skb, int type,
  35                                  int tc_stats_type, int xstats_type,
  36                                  spinlock_t *lock, struct gnet_dump *d,
  37                                  int padattr);
  38
  39 int gnet_stats_copy_basic(const seqcount_t *running,
  40                           struct gnet_dump *d,
  41                           struct gnet_stats_basic_cpu __percpu *cpu,
  42                           struct gnet_stats_basic_packed *b);
  43 void __gnet_stats_copy_basic(const seqcount_t *running,
  44                              struct gnet_stats_basic_packed *bstats,
  45                              struct gnet_stats_basic_cpu __percpu *cpu,
  46                              struct gnet_stats_basic_packed *b);
  47 int gnet_stats_copy_basic_hw(const seqcount_t *running,
  48                              struct gnet_dump *d,
  49                              struct gnet_stats_basic_cpu __percpu *cpu,
  50                              struct gnet_stats_basic_packed *b);
  51 int gnet_stats_copy_rate_est(struct gnet_dump *d,
  52                              struct net_rate_estimator __rcu **ptr);
  53 int gnet_stats_copy_queue(struct gnet_dump *d,
  54                           struct gnet_stats_queue __percpu *cpu_q,
  55                           struct gnet_stats_queue *q, __u32 qlen);
  56 void __gnet_stats_copy_queue(struct gnet_stats_queue *qstats,
  57                              const struct gnet_stats_queue __percpu *cpu_q,
  58                              const struct gnet_stats_queue *q, __u32 qlen);
  59 int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
  60
  61 int gnet_stats_finish_copy(struct gnet_dump *d);
  62
  63 int gen_new_estimator(struct gnet_stats_basic_packed *bstats,
  64                       struct gnet_stats_basic_cpu __percpu *cpu_bstats,
  65                       struct net_rate_estimator __rcu **rate_est,
  66                       spinlock_t *lock,
  67                       seqcount_t *running, struct nlattr *opt);
  68 void gen_kill_estimator(struct net_rate_estimator __rcu **ptr);
  69 int gen_replace_estimator(struct gnet_stats_basic_packed *bstats,
  70                           struct gnet_stats_basic_cpu __percpu *cpu_bstats,
  71                           struct net_rate_estimator __rcu **ptr,
  72                           spinlock_t *lock,
  73                           seqcount_t *running, struct nlattr *opt);
  74 bool gen_estimator_active(struct net_rate_estimator __rcu **ptr);
  75 bool gen_estimator_read(struct net_rate_estimator __rcu **ptr,
  76                         struct gnet_stats_rate_est64 *sample);
  77 #endif