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 unused:5;
28};
29
30struct psample_group *psample_group_get(struct net *net, u32 group_num);
31void psample_group_take(struct psample_group *group);
32void psample_group_put(struct psample_group *group);
33
34struct sk_buff;
35
36#if IS_ENABLED(CONFIG_PSAMPLE)
37
38void psample_sample_packet(struct psample_group *group, struct sk_buff *skb,
39 u32 sample_rate, const struct psample_metadata *md);
40
41#else
42
43static inline void psample_sample_packet(struct psample_group *group,
44 struct sk_buff *skb, u32 sample_rate,
45 const struct psample_metadata *md)
46{
47}
48
49#endif
50
51#endif /* __NET_PSAMPLE_H */
52

source code of linux/include/net/psample.h