1 #ifndef __LINUX_BRIDGE_NETFILTER_H
2 #define __LINUX_BRIDGE_NETFILTER_H
4 #include <uapi/linux/netfilter_bridge.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_PKT_TYPE 0x01
21 #define BRNF_BRIDGED_DNAT 0x02
22 #define BRNF_NF_BRIDGE_PREROUTING 0x08
23 #define BRNF_8021Q 0x10
24 #define BRNF_PPPoE 0x20
26 static inline unsigned int nf_bridge_mtu_reduction(const struct sk_buff *skb)
28 if (unlikely(skb->nf_bridge->mask & BRNF_PPPoE))
29 return PPPOE_SES_HLEN;
33 int br_handle_frame_finish(struct sock *sk, struct sk_buff *skb);
35 static inline void br_drop_fake_rtable(struct sk_buff *skb)
37 struct dst_entry *dst = skb_dst(skb);
39 if (dst && (dst->flags & DST_FAKE_RTABLE))
44 #define br_drop_fake_rtable(skb) do { } while (0)
45 #endif /* CONFIG_BRIDGE_NETFILTER */