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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __LINUX_BRIDGE_NETFILTER_H
#define __LINUX_BRIDGE_NETFILTER_H
#include <uapi/linux/netfilter_bridge.h>
#include <linux/skbuff.h>
struct nf_bridge_frag_data {
char mac[ETH_HLEN];
bool vlan_present;
u16 vlan_tci;
__be16 vlan_proto;
};
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
static inline void br_drop_fake_rtable(struct sk_buff *skb)
{
struct dst_entry *dst = skb_dst(skb);
if (dst && (dst->flags & DST_FAKE_RTABLE))
skb_dst_drop(skb);
}
static inline struct nf_bridge_info *
nf_bridge_info_get(const struct sk_buff *skb)
{
return skb_ext_find(skb, SKB_EXT_BRIDGE_NF);
}
static inline bool nf_bridge_info_exists(const struct sk_buff *skb)
{
return skb_ext_exist(skb, SKB_EXT_BRIDGE_NF);
}
static inline int nf_bridge_get_physinif(const struct sk_buff *skb)
{
const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
if (!nf_bridge)
return 0;
return nf_bridge->physindev ? nf_bridge->physindev->ifindex : 0;
}
static inline int nf_bridge_get_physoutif(const struct sk_buff *skb)
{
const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
if (!nf_bridge)
return 0;
return nf_bridge->physoutdev ? nf_bridge->physoutdev->ifindex : 0;
}
static inline struct net_device *
nf_bridge_get_physindev(const struct sk_buff *skb)
{
const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
return nf_bridge ? nf_bridge->physindev : NULL;
}
static inline struct net_device *
nf_bridge_get_physoutdev(const struct sk_buff *skb)
{
const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
return nf_bridge ? nf_bridge->physoutdev : NULL;
}
static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb)
{
const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
return nf_bridge && nf_bridge->in_prerouting;
}
#else
#define br_drop_fake_rtable(skb) do { } while (0)
static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb)
{
return false;
}
#endif /* CONFIG_BRIDGE_NETFILTER */
#endif