linux/net/netfilter/nft_chain_filter.c

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <net/net_namespace.h>
#include <net/netfilter/nf_tables.h>
#include <linux/netfilter_ipv4.h>
#include <linux/netfilter_ipv6.h>
#include <linux/netfilter_bridge.h>
#include <linux/netfilter_arp.h>
#include <net/netfilter/nf_tables_ipv4.h>
#include <net/netfilter/nf_tables_ipv6.h>

#ifdef CONFIG_NF_TABLES_IPV4
static unsigned int nft_do_chain_ipv4(void *priv,
				      struct sk_buff *skb,
				      const struct nf_hook_state *state)
{ … }

static const struct nft_chain_type nft_chain_filter_ipv4 = …;

static void nft_chain_filter_ipv4_init(void)
{ … }
static void nft_chain_filter_ipv4_fini(void)
{ … }

#else
static inline void nft_chain_filter_ipv4_init(void) {}
static inline void nft_chain_filter_ipv4_fini(void) {}
#endif /* CONFIG_NF_TABLES_IPV4 */

#ifdef CONFIG_NF_TABLES_ARP
static unsigned int nft_do_chain_arp(void *priv, struct sk_buff *skb,
				     const struct nf_hook_state *state)
{ … }

static const struct nft_chain_type nft_chain_filter_arp = …;

static void nft_chain_filter_arp_init(void)
{ … }

static void nft_chain_filter_arp_fini(void)
{ … }
#else
static inline void nft_chain_filter_arp_init(void) {}
static inline void nft_chain_filter_arp_fini(void) {}
#endif /* CONFIG_NF_TABLES_ARP */

#ifdef CONFIG_NF_TABLES_IPV6
static unsigned int nft_do_chain_ipv6(void *priv,
				      struct sk_buff *skb,
				      const struct nf_hook_state *state)
{ … }

static const struct nft_chain_type nft_chain_filter_ipv6 = …;

static void nft_chain_filter_ipv6_init(void)
{ … }

static void nft_chain_filter_ipv6_fini(void)
{ … }
#else
static inline void nft_chain_filter_ipv6_init(void) {}
static inline void nft_chain_filter_ipv6_fini(void) {}
#endif /* CONFIG_NF_TABLES_IPV6 */

#ifdef CONFIG_NF_TABLES_INET
static unsigned int nft_do_chain_inet(void *priv, struct sk_buff *skb,
				      const struct nf_hook_state *state)
{ … }

static unsigned int nft_do_chain_inet_ingress(void *priv, struct sk_buff *skb,
					      const struct nf_hook_state *state)
{ … }

static const struct nft_chain_type nft_chain_filter_inet = …;

static void nft_chain_filter_inet_init(void)
{ … }

static void nft_chain_filter_inet_fini(void)
{ … }
#else
static inline void nft_chain_filter_inet_init(void) {}
static inline void nft_chain_filter_inet_fini(void) {}
#endif /* CONFIG_NF_TABLES_IPV6 */

#if IS_ENABLED(CONFIG_NF_TABLES_BRIDGE)
static unsigned int
nft_do_chain_bridge(void *priv,
		    struct sk_buff *skb,
		    const struct nf_hook_state *state)
{ … }

static const struct nft_chain_type nft_chain_filter_bridge = …;

static void nft_chain_filter_bridge_init(void)
{ … }

static void nft_chain_filter_bridge_fini(void)
{ … }
#else
static inline void nft_chain_filter_bridge_init(void) {}
static inline void nft_chain_filter_bridge_fini(void) {}
#endif /* CONFIG_NF_TABLES_BRIDGE */

#ifdef CONFIG_NF_TABLES_NETDEV
static unsigned int nft_do_chain_netdev(void *priv, struct sk_buff *skb,
					const struct nf_hook_state *state)
{ … }

static const struct nft_chain_type nft_chain_filter_netdev = …;

static void nft_netdev_event(unsigned long event, struct net_device *dev,
			     struct nft_ctx *ctx)
{ … }

static int nf_tables_netdev_event(struct notifier_block *this,
				  unsigned long event, void *ptr)
{ … }

static struct notifier_block nf_tables_netdev_notifier = …;

static int nft_chain_filter_netdev_init(void)
{ … }

static void nft_chain_filter_netdev_fini(void)
{ … }
#else
static inline int nft_chain_filter_netdev_init(void) { return 0; }
static inline void nft_chain_filter_netdev_fini(void) {}
#endif /* CONFIG_NF_TABLES_NETDEV */

int __init nft_chain_filter_init(void)
{ … }

void nft_chain_filter_fini(void)
{ … }