linux/net/netfilter/nf_flow_table_xdp.c

// SPDX-License-Identifier: GPL-2.0-only
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/netfilter.h>
#include <linux/rhashtable.h>
#include <linux/netdevice.h>
#include <net/flow_offload.h>
#include <net/netfilter/nf_flow_table.h>

struct flow_offload_xdp_ft { … };

struct flow_offload_xdp { … };

#define NF_XDP_HT_BITS …
static DEFINE_HASHTABLE(nf_xdp_hashtable, NF_XDP_HT_BITS);
static DEFINE_MUTEX(nf_xdp_hashtable_lock);

/* caller must hold rcu read lock */
struct nf_flowtable *nf_flowtable_by_dev(const struct net_device *dev)
{ … }

static int nf_flowtable_by_dev_insert(struct nf_flowtable *ft,
				      const struct net_device *dev)
{ … }

static void nf_flowtable_by_dev_remove(struct nf_flowtable *ft,
				       const struct net_device *dev)
{ … }

int nf_flow_offload_xdp_setup(struct nf_flowtable *flowtable,
			      struct net_device *dev,
			      enum flow_block_command cmd)
{ … }