1 #ifndef __LINUX_BRIDGE_NETFILTER_H
2 #define __LINUX_BRIDGE_NETFILTER_H
4 #include <uapi/linux/netfilter_bridge.h>
5 #include <linux/skbuff.h>
7 enum nf_br_hook_priorities
{
8 NF_BR_PRI_FIRST
= INT_MIN
,
9 NF_BR_PRI_NAT_DST_BRIDGED
= -300,
10 NF_BR_PRI_FILTER_BRIDGED
= -200,
12 NF_BR_PRI_NAT_DST_OTHER
= 100,
13 NF_BR_PRI_FILTER_OTHER
= 200,
14 NF_BR_PRI_NAT_SRC
= 300,
15 NF_BR_PRI_LAST
= INT_MAX
,
18 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
20 #define BRNF_BRIDGED_DNAT 0x02
21 #define BRNF_NF_BRIDGE_PREROUTING 0x08
23 static inline unsigned int nf_bridge_mtu_reduction(const struct sk_buff
*skb
)
25 if (skb
->nf_bridge
->orig_proto
== BRNF_PROTO_PPPOE
)
26 return PPPOE_SES_HLEN
;
30 int br_handle_frame_finish(struct sock
*sk
, struct sk_buff
*skb
);
32 static inline void br_drop_fake_rtable(struct sk_buff
*skb
)
34 struct dst_entry
*dst
= skb_dst(skb
);
36 if (dst
&& (dst
->flags
& DST_FAKE_RTABLE
))
40 static inline int nf_bridge_get_physinif(const struct sk_buff
*skb
)
42 return skb
->nf_bridge
? skb
->nf_bridge
->physindev
->ifindex
: 0;
45 static inline int nf_bridge_get_physoutif(const struct sk_buff
*skb
)
47 return skb
->nf_bridge
? skb
->nf_bridge
->physoutdev
->ifindex
: 0;
50 static inline struct net_device
*
51 nf_bridge_get_physindev(const struct sk_buff
*skb
)
53 return skb
->nf_bridge
? skb
->nf_bridge
->physindev
: NULL
;
56 static inline struct net_device
*
57 nf_bridge_get_physoutdev(const struct sk_buff
*skb
)
59 return skb
->nf_bridge
? skb
->nf_bridge
->physoutdev
: NULL
;
62 #define br_drop_fake_rtable(skb) do { } while (0)
63 #endif /* CONFIG_BRIDGE_NETFILTER */