1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __NET_PSAMPLE_H
3#define __NET_PSAMPLE_H
4
5#include <uapi/linux/psample.h>
6#include <linux/list.h>
7
8struct psample_group {
9 struct list_head list;
10 struct net *net;
11 u32 group_num;
12 u32 refcount;
13 u32 seq;
14 struct rcu_head rcu;
15};
16
17struct psample_metadata {
18 u32 trunc_size;
19 int in_ifindex;
20 int out_ifindex;
21 u16 out_tc;
22 u64 out_tc_occ; /* bytes */
23 u64 latency; /* nanoseconds */
24 u8 out_tc_valid:1,
25 out_tc_occ_valid:1,
26 latency_valid:1,
27 rate_as_probability:1,
28 unused:4;
29 const u8 *user_cookie;
30 u32 user_cookie_len;
31};
32
33struct psample_group *psample_group_get(struct net *net, u32 group_num);
34void psample_group_take(struct psample_group *group);
35void psample_group_put(struct psample_group *group);
36
37struct sk_buff;
38
39#if IS_ENABLED(CONFIG_PSAMPLE)
40
41void psample_sample_packet(struct psample_group *group,
42 const struct sk_buff *skb, u32 sample_rate,
43 const struct psample_metadata *md);
44
45#else
46
47static inline void psample_sample_packet(struct psample_group *group,
48 const struct sk_buff *skb,
49 u32 sample_rate,
50 const struct psample_metadata *md)
51{
52}
53
54#endif
55
56#endif /* __NET_PSAMPLE_H */
57