/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __NET_PSAMPLE_H
#define __NET_PSAMPLE_H

#include <uapi/linux/psample.h>
#include <linux/list.h>

struct psample_group {
        struct list_head list;
        struct net *net;
        u32 group_num;
        u32 refcount;
        u32 seq;
        struct rcu_head rcu;
};

struct psample_metadata {
        u32 trunc_size;
        int in_ifindex;
        int out_ifindex;
        u16 out_tc;
        u64 out_tc_occ; /* bytes */
        u64 latency;    /* nanoseconds */
        u8 out_tc_valid:1,
           out_tc_occ_valid:1,
           latency_valid:1,
           rate_as_probability:1,
           unused:4;
        const u8 *user_cookie;
        u32 user_cookie_len;
};

struct psample_group *psample_group_get(struct net *net, u32 group_num);
void psample_group_take(struct psample_group *group);
void psample_group_put(struct psample_group *group);

struct sk_buff;

#if IS_ENABLED(CONFIG_PSAMPLE)

void psample_sample_packet(struct psample_group *group,
                           const struct sk_buff *skb, u32 sample_rate,
                           const struct psample_metadata *md);

#else

static inline void psample_sample_packet(struct psample_group *group,
                                         const struct sk_buff *skb,
                                         u32 sample_rate,
                                         const struct psample_metadata *md)
{
}

#endif

#endif /* __NET_PSAMPLE_H */