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 | */ |
18 | struct 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 | |
24 | struct net_rate_estimator; |
25 | |
26 | struct 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 | |
40 | void gnet_stats_basic_sync_init(struct gnet_stats_basic_sync *b); |
41 | int gnet_stats_start_copy(struct sk_buff *skb, int type, spinlock_t *lock, |
42 | struct gnet_dump *d, int padattr); |
43 | |
44 | int 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 | |
49 | int 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); |
52 | void 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); |
55 | int 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); |
58 | int gnet_stats_copy_rate_est(struct gnet_dump *d, |
59 | struct net_rate_estimator __rcu **ptr); |
60 | int gnet_stats_copy_queue(struct gnet_dump *d, |
61 | struct gnet_stats_queue __percpu *cpu_q, |
62 | struct gnet_stats_queue *q, __u32 qlen); |
63 | void 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); |
66 | int gnet_stats_copy_app(struct gnet_dump *d, void *st, int len); |
67 | |
68 | int gnet_stats_finish_copy(struct gnet_dump *d); |
69 | |
70 | int 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); |
75 | void gen_kill_estimator(struct net_rate_estimator __rcu **ptr); |
76 | int 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); |
81 | bool gen_estimator_active(struct net_rate_estimator __rcu **ptr); |
82 | bool gen_estimator_read(struct net_rate_estimator __rcu **ptr, |
83 | struct gnet_stats_rate_est64 *sample); |
84 | #endif |
85 | |