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 
8 struct 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 
17 struct 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 
30 struct psample_group *psample_group_get(struct net *net, u32 group_num);
31 void psample_group_take(struct psample_group *group);
32 void psample_group_put(struct psample_group *group);
33 
34 struct sk_buff;
35 
36 #if IS_ENABLED(CONFIG_PSAMPLE)
37 
38 void psample_sample_packet(struct psample_group *group, struct sk_buff *skb,
39 			   u32 sample_rate, const struct psample_metadata *md);
40 
41 #else
42 
psample_sample_packet(struct psample_group * group,struct sk_buff * skb,u32 sample_rate,const struct psample_metadata * md)43 static 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