Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef __LINUX_BRIDGE_NETFILTER_H
3#define __LINUX_BRIDGE_NETFILTER_H
4
5#include <uapi/linux/netfilter_bridge.h>
6#include <linux/skbuff.h>
7
8#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
9
10int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb);
11
12static inline void br_drop_fake_rtable(struct sk_buff *skb)
13{
14 struct dst_entry *dst = skb_dst(skb);
15
16 if (dst && (dst->flags & DST_FAKE_RTABLE))
17 skb_dst_drop(skb);
18}
19
20static inline struct nf_bridge_info *
21nf_bridge_info_get(const struct sk_buff *skb)
22{
23 return skb_ext_find(skb, SKB_EXT_BRIDGE_NF);
24}
25
26static inline bool nf_bridge_info_exists(const struct sk_buff *skb)
27{
28 return skb_ext_exist(skb, SKB_EXT_BRIDGE_NF);
29}
30
31static inline int nf_bridge_get_physinif(const struct sk_buff *skb)
32{
33 const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
34
35 if (!nf_bridge)
36 return 0;
37
38 return nf_bridge->physindev ? nf_bridge->physindev->ifindex : 0;
39}
40
41static inline int nf_bridge_get_physoutif(const struct sk_buff *skb)
42{
43 const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
44
45 if (!nf_bridge)
46 return 0;
47
48 return nf_bridge->physoutdev ? nf_bridge->physoutdev->ifindex : 0;
49}
50
51static inline struct net_device *
52nf_bridge_get_physindev(const struct sk_buff *skb)
53{
54 const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
55
56 return nf_bridge ? nf_bridge->physindev : NULL;
57}
58
59static inline struct net_device *
60nf_bridge_get_physoutdev(const struct sk_buff *skb)
61{
62 const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
63
64 return nf_bridge ? nf_bridge->physoutdev : NULL;
65}
66
67static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb)
68{
69 const struct nf_bridge_info *nf_bridge = nf_bridge_info_get(skb);
70
71 return nf_bridge && nf_bridge->in_prerouting;
72}
73#else
74#define br_drop_fake_rtable(skb) do { } while (0)
75static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb)
76{
77 return false;
78}
79#endif /* CONFIG_BRIDGE_NETFILTER */
80
81#endif