LXR linux/include/net/netfilter/br

   1/* SPDX-License-Identifier: GPL-2.0 */
   2#ifndef _BR_NETFILTER_H_
   3#define _BR_NETFILTER_H_
   4
   5#include "../../../net/bridge/br_private.h"
   6
   7static inline struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb)
   8{
   9        struct nf_bridge_info *b = skb_ext_add(skb, SKB_EXT_BRIDGE_NF);
  10
  11        if (b)
  12                memset(b, 0, sizeof(*b));
  13
  14        return b;
  15}
  16
  17void nf_bridge_update_protocol(struct sk_buff *skb);
  18
  19int br_nf_hook_thresh(unsigned int hook, struct net *net, struct sock *sk,
  20                      struct sk_buff *skb, struct net_device *indev,
  21                      struct net_device *outdev,
  22                      int (*okfn)(struct net *, struct sock *,
  23                                  struct sk_buff *));
  24
  25unsigned int nf_bridge_encap_header_len(const struct sk_buff *skb);
  26
  27static inline void nf_bridge_push_encap_header(struct sk_buff *skb)
  28{
  29        unsigned int len = nf_bridge_encap_header_len(skb);
  30
  31        skb_push(skb, len);
  32        skb->network_header -= len;
  33}
  34
  35int br_nf_pre_routing_finish_bridge(struct net *net, struct sock *sk, struct sk_buff *skb);
  36
  37static inline struct rtable *bridge_parent_rtable(const struct net_device *dev)
  38{
  39        struct net_bridge_port *port;
  40
  41        port = br_port_get_rcu(dev);
  42        return port ? &port->br->fake_rtable : NULL;
  43}
  44
  45struct net_device *setup_pre_routing(struct sk_buff *skb);
  46
  47#if IS_ENABLED(CONFIG_IPV6)
  48int br_validate_ipv6(struct net *net, struct sk_buff *skb);
  49unsigned int br_nf_pre_routing_ipv6(void *priv,
  50                                    struct sk_buff *skb,
  51                                    const struct nf_hook_state *state);
  52#else
  53static inline int br_validate_ipv6(struct net *net, struct sk_buff *skb)
  54{
  55        return -1;
  56}
  57
  58static inline unsigned int
  59br_nf_pre_routing_ipv6(const struct nf_hook_ops *ops, struct sk_buff *skb,
  60                       const struct nf_hook_state *state)
  61{
  62        return NF_ACCEPT;
  63}
  64#endif
  65
  66#endif /* _BR_NETFILTER_H_ */
  67