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 rate_as_probability:1, 28 unused:4; 29 const u8 *user_cookie; 30 u32 user_cookie_len; 31 }; 32 33 struct psample_group *psample_group_get(struct net *net, u32 group_num); 34 void psample_group_take(struct psample_group *group); 35 void psample_group_put(struct psample_group *group); 36 37 struct sk_buff; 38 39 #if IS_ENABLED(CONFIG_PSAMPLE) 40 41 void 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 47 static 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