Cregit: Linux 7.2: nf_dup

Contributors: 6
Author	Tokens	Token Proportion	Commits	Commit Proportion
Pablo Neira Ayuso	132	67.69%	4	40.00%
Sebastian Andrzej Siewior	27	13.85%	1	10.00%
Weiming Shi	20	10.26%	1	10.00%
Florian Westphal	12	6.15%	2	20.00%
Jeremy Sowden	3	1.54%	1	10.00%
Greg Kroah-Hartman	1	0.51%	1	10.00%
Total	195		10

/* 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

nf_dup_netdev.h