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/* Throughput stats.
11 * Must be initialized beforehand with gnet_stats_basic_sync_init().
12 *
13 * If no reads can ever occur parallel to writes (e.g. stack-allocated
14 * bstats), then the internal stat values can be written to and read
15 * from directly. Otherwise, use _bstats_set/update() for writes and
16 * gnet_stats_add_basic() for reads.
17 */
18struct gnet_stats_basic_sync {
19	u64_stats_t bytes;
20	u64_stats_t packets;
21	struct u64_stats_sync syncp;
22} __aligned(2 * sizeof(u64));
23
24struct net_rate_estimator;
25
26struct gnet_dump {
27	spinlock_t *      lock;
28	struct sk_buff *  skb;
29	struct nlattr *   tail;
30
31	/* Backward compatibility */
32	int               compat_tc_stats;
33	int               compat_xstats;
34	int               padattr;
35	void *            xstats;
36	int               xstats_len;
37	struct tc_stats   tc_stats;
38};
39
40void gnet_stats_basic_sync_init(struct gnet_stats_basic_sync *b);
41int gnet_stats_start_copy(struct sk_buff *skb, int type, spinlock_t *lock,
42			  struct gnet_dump *d, int padattr);
43
44int gnet_stats_start_copy_compat(struct sk_buff *skb, int type,
45				 int tc_stats_type, int xstats_type,
46				 spinlock_t *lock, struct gnet_dump *d,
47				 int padattr);
48
49int gnet_stats_copy_basic(struct gnet_dump *d,
50			  struct gnet_stats_basic_sync __percpu *cpu,
51			  struct gnet_stats_basic_sync *b, bool running);
52void gnet_stats_add_basic(struct gnet_stats_basic_sync *bstats,
53			  struct gnet_stats_basic_sync __percpu *cpu,
54			  struct gnet_stats_basic_sync *b, bool running);
55int gnet_stats_copy_basic_hw(struct gnet_dump *d,
56			     struct gnet_stats_basic_sync __percpu *cpu,
57			     struct gnet_stats_basic_sync *b, bool running);
58int gnet_stats_copy_rate_est(struct gnet_dump *d,
59			     struct net_rate_estimator __rcu **ptr);
60int gnet_stats_copy_queue(struct gnet_dump *d,
61			  struct gnet_stats_queue __percpu *cpu_q,
62			  struct gnet_stats_queue *q, __u32 qlen);
63void gnet_stats_add_queue(struct gnet_stats_queue *qstats,
64			  const struct gnet_stats_queue __percpu *cpu_q,
65			  const struct gnet_stats_queue *q);
66int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
67
68int gnet_stats_finish_copy(struct gnet_dump *d);
69
70int gen_new_estimator(struct gnet_stats_basic_sync *bstats,
71		      struct gnet_stats_basic_sync __percpu *cpu_bstats,
72		      struct net_rate_estimator __rcu **rate_est,
73		      spinlock_t *lock,
74		      bool running, struct nlattr *opt);
75void gen_kill_estimator(struct net_rate_estimator __rcu **ptr);
76int gen_replace_estimator(struct gnet_stats_basic_sync *bstats,
77			  struct gnet_stats_basic_sync __percpu *cpu_bstats,
78			  struct net_rate_estimator __rcu **ptr,
79			  spinlock_t *lock,
80			  bool running, struct nlattr *opt);
81bool gen_estimator_active(struct net_rate_estimator __rcu **ptr);
82bool gen_estimator_read(struct net_rate_estimator __rcu **ptr,
83			struct gnet_stats_rate_est64 *sample);
84#endif

 
 1#ifndef __NET_GEN_STATS_H
 2#define __NET_GEN_STATS_H
 3
 4#include <linux/gen_stats.h>
 5#include <linux/socket.h>
 6#include <linux/rtnetlink.h>
 7#include <linux/pkt_sched.h>
 8
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 9struct gnet_dump {
10	spinlock_t *      lock;
11	struct sk_buff *  skb;
12	struct nlattr *   tail;
13
14	/* Backward compatibility */
15	int               compat_tc_stats;
16	int               compat_xstats;
 
17	void *            xstats;
18	int               xstats_len;
19	struct tc_stats   tc_stats;
20};
21
22extern int gnet_stats_start_copy(struct sk_buff *skb, int type,
23				 spinlock_t *lock, struct gnet_dump *d);
24
25extern int gnet_stats_start_copy_compat(struct sk_buff *skb, int type,
26					int tc_stats_type,int xstats_type,
27					spinlock_t *lock, struct gnet_dump *d);
28
29extern int gnet_stats_copy_basic(struct gnet_dump *d,
30				 struct gnet_stats_basic_packed *b);
31extern int gnet_stats_copy_rate_est(struct gnet_dump *d,
32				    const struct gnet_stats_basic_packed *b,
33				    struct gnet_stats_rate_est *r);
34extern int gnet_stats_copy_queue(struct gnet_dump *d,
35				 struct gnet_stats_queue *q);
36extern int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
37
38extern int gnet_stats_finish_copy(struct gnet_dump *d);
39
40extern int gen_new_estimator(struct gnet_stats_basic_packed *bstats,
41			     struct gnet_stats_rate_est *rate_est,
42			     spinlock_t *stats_lock, struct nlattr *opt);
43extern void gen_kill_estimator(struct gnet_stats_basic_packed *bstats,
44			       struct gnet_stats_rate_est *rate_est);
45extern int gen_replace_estimator(struct gnet_stats_basic_packed *bstats,
46				 struct gnet_stats_rate_est *rate_est,
47				 spinlock_t *stats_lock, struct nlattr *opt);
48extern bool gen_estimator_active(const struct gnet_stats_basic_packed *bstats,
49				 const struct gnet_stats_rate_est *rate_est);
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
50#endif