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 */