include/net/psample.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef __NET_PSAMPLE_H
0003 #define __NET_PSAMPLE_H
0004
0005 #include <uapi/linux/psample.h>
0006 #include <linux/list.h>
0007
0008 struct psample_group {
0009     struct list_head list;
0010     struct net *net;
0011     u32 group_num;
0012     u32 refcount;
0013     u32 seq;
0014     struct rcu_head rcu;
0015 };
0016
0017 struct psample_metadata {
0018     u32 trunc_size;
0019     int in_ifindex;
0020     int out_ifindex;
0021     u16 out_tc;
0022     u64 out_tc_occ; /* bytes */
0023     u64 latency;    /* nanoseconds */
0024     u8 out_tc_valid:1,
0025        out_tc_occ_valid:1,
0026        latency_valid:1,
0027        unused:5;
0028 };
0029
0030 struct psample_group *psample_group_get(struct net *net, u32 group_num);
0031 void psample_group_take(struct psample_group *group);
0032 void psample_group_put(struct psample_group *group);
0033
0034 struct sk_buff;
0035
0036 #if IS_ENABLED(CONFIG_PSAMPLE)
0037
0038 void psample_sample_packet(struct psample_group *group, struct sk_buff *skb,
0039                u32 sample_rate, const struct psample_metadata *md);
0040
0041 #else
0042
0043 static inline void psample_sample_packet(struct psample_group *group,
0044                      struct sk_buff *skb, u32 sample_rate,
0045                      const struct psample_metadata *md)
0046 {
0047 }
0048
0049 #endif
0050
0051 #endif /* __NET_PSAMPLE_H */