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 };
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_rate_est(struct gnet_dump *d,
48 			     struct net_rate_estimator __rcu **ptr);
49 int gnet_stats_copy_queue(struct gnet_dump *d,
50 			  struct gnet_stats_queue __percpu *cpu_q,
51 			  struct gnet_stats_queue *q, __u32 qlen);
52 void __gnet_stats_copy_queue(struct gnet_stats_queue *qstats,
53 			     const struct gnet_stats_queue __percpu *cpu_q,
54 			     const struct gnet_stats_queue *q, __u32 qlen);
55 int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
56 
57 int gnet_stats_finish_copy(struct gnet_dump *d);
58 
59 int gen_new_estimator(struct gnet_stats_basic_packed *bstats,
60 		      struct gnet_stats_basic_cpu __percpu *cpu_bstats,
61 		      struct net_rate_estimator __rcu **rate_est,
62 		      spinlock_t *lock,
63 		      seqcount_t *running, struct nlattr *opt);
64 void gen_kill_estimator(struct net_rate_estimator __rcu **ptr);
65 int gen_replace_estimator(struct gnet_stats_basic_packed *bstats,
66 			  struct gnet_stats_basic_cpu __percpu *cpu_bstats,
67 			  struct net_rate_estimator __rcu **ptr,
68 			  spinlock_t *lock,
69 			  seqcount_t *running, struct nlattr *opt);
70 bool gen_estimator_active(struct net_rate_estimator __rcu **ptr);
71 bool gen_estimator_read(struct net_rate_estimator __rcu **ptr,
72 			struct gnet_stats_rate_est64 *sample);
73 #endif
74