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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/* 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 */
11struct gnet_stats_basic_packed {
12 __u64 bytes;
13 __u64 packets;
14};
15
16struct gnet_stats_basic_cpu {
17 struct gnet_stats_basic_packed bstats;
18 struct u64_stats_sync syncp;
19} __aligned(2 * sizeof(u64));
20
21struct net_rate_estimator;
22
23struct 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
37int gnet_stats_start_copy(struct sk_buff *skb, int type, spinlock_t *lock,
38 struct gnet_dump *d, int padattr);
39
40int 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
45int 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);
49void __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);
53int 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);
57int gnet_stats_copy_rate_est(struct gnet_dump *d,
58 struct net_rate_estimator __rcu **ptr);
59int gnet_stats_copy_queue(struct gnet_dump *d,
60 struct gnet_stats_queue __percpu *cpu_q,
61 struct gnet_stats_queue *q, __u32 qlen);
62void __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);
65int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len);
66
67int gnet_stats_finish_copy(struct gnet_dump *d);
68
69int 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);
74void gen_kill_estimator(struct net_rate_estimator __rcu **ptr);
75int 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);
80bool gen_estimator_active(struct net_rate_estimator __rcu **ptr);
81bool gen_estimator_read(struct net_rate_estimator __rcu **ptr,
82 struct gnet_stats_rate_est64 *sample);
83#endif