Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
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linux
1#ifndef __LINUX_BRIDGE_NETFILTER_H
2#define __LINUX_BRIDGE_NETFILTER_H
3
4#include <uapi/linux/netfilter_bridge.h>
5#include <linux/skbuff.h>
6
7enum 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,
11 NF_BR_PRI_BRNF = 0,
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,
16};
17
18#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
19
20#define BRNF_BRIDGED_DNAT 0x02
21#define BRNF_NF_BRIDGE_PREROUTING 0x08
22
23int br_handle_frame_finish(struct sock *sk, struct sk_buff *skb);
24
25static inline void br_drop_fake_rtable(struct sk_buff *skb)
26{
27 struct dst_entry *dst = skb_dst(skb);
28
29 if (dst && (dst->flags & DST_FAKE_RTABLE))
30 skb_dst_drop(skb);
31}
32
33static inline int nf_bridge_get_physinif(const struct sk_buff *skb)
34{
35 struct nf_bridge_info *nf_bridge;
36
37 if (skb->nf_bridge == NULL)
38 return 0;
39
40 nf_bridge = skb->nf_bridge;
41 return nf_bridge->physindev ? nf_bridge->physindev->ifindex : 0;
42}
43
44static inline int nf_bridge_get_physoutif(const struct sk_buff *skb)
45{
46 struct nf_bridge_info *nf_bridge;
47
48 if (skb->nf_bridge == NULL)
49 return 0;
50
51 nf_bridge = skb->nf_bridge;
52 return nf_bridge->physoutdev ? nf_bridge->physoutdev->ifindex : 0;
53}
54
55static inline struct net_device *
56nf_bridge_get_physindev(const struct sk_buff *skb)
57{
58 return skb->nf_bridge ? skb->nf_bridge->physindev : NULL;
59}
60
61static inline struct net_device *
62nf_bridge_get_physoutdev(const struct sk_buff *skb)
63{
64 return skb->nf_bridge ? skb->nf_bridge->physoutdev : NULL;
65}
66#else
67#define br_drop_fake_rtable(skb) do { } while (0)
68#endif /* CONFIG_BRIDGE_NETFILTER */
69
70#endif