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

#include <net/netfilter/nf_tables.h>
#include <linux/netdevice.h>
#include <linux/sched.h>

void nf_dup_netdev_egress(const struct nft_pktinfo *pkt, int oif);
void nf_fwd_netdev_egress(const struct nft_pktinfo *pkt, int oif);

#define NF_RECURSION_LIMIT      2

#ifndef CONFIG_PREEMPT_RT
static inline bool nf_dev_xmit_recursion(void)
{
        return unlikely(__this_cpu_read(softnet_data.xmit.nf_dup_skb_recursion) >
                        NF_RECURSION_LIMIT);
}

static inline void nf_dev_xmit_recursion_inc(void)
{
        __this_cpu_inc(softnet_data.xmit.nf_dup_skb_recursion);
}

static inline void nf_dev_xmit_recursion_dec(void)
{
        __this_cpu_dec(softnet_data.xmit.nf_dup_skb_recursion);
}
#else
static inline bool nf_dev_xmit_recursion(void)
{
        return unlikely(current->net_xmit.nf_dup_skb_recursion > NF_RECURSION_LIMIT);
}

static inline void nf_dev_xmit_recursion_inc(void)
{
        current->net_xmit.nf_dup_skb_recursion++;
}

static inline void nf_dev_xmit_recursion_dec(void)
{
        current->net_xmit.nf_dup_skb_recursion--;
}
#endif

struct nft_offload_ctx;
struct nft_flow_rule;

int nft_fwd_dup_netdev_offload(struct nft_offload_ctx *ctx,
                               struct nft_flow_rule *flow,
                               enum flow_action_id id, int oif);
#endif