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| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
|---|---|
| 2 | #ifndef _BR_NETFILTER_H_ |
| 3 | #define _BR_NETFILTER_H_ |
| 4 | |
| 5 | #include <linux/netfilter.h> |
| 6 | |
| 7 | #include "../../../net/bridge/br_private.h" |
| 8 | |
| 9 | static inline struct nf_bridge_info *nf_bridge_alloc(struct sk_buff *skb) |
| 10 | { |
| 11 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 12 | struct nf_bridge_info *b = skb_ext_add(skb, SKB_EXT_BRIDGE_NF); |
| 13 | |
| 14 | if (b) |
| 15 | memset(b, 0, sizeof(*b)); |
| 16 | |
| 17 | return b; |
| 18 | #else |
| 19 | return NULL; |
| 20 | #endif |
| 21 | } |
| 22 | |
| 23 | void nf_bridge_update_protocol(struct sk_buff *skb); |
| 24 | |
| 25 | int br_nf_hook_thresh(unsigned int hook, struct net *net, struct sock *sk, |
| 26 | struct sk_buff *skb, struct net_device *indev, |
| 27 | struct net_device *outdev, |
| 28 | int (*okfn)(struct net *, struct sock *, |
| 29 | struct sk_buff *)); |
| 30 | |
| 31 | unsigned int nf_bridge_encap_header_len(const struct sk_buff *skb); |
| 32 | |
| 33 | static inline void nf_bridge_push_encap_header(struct sk_buff *skb) |
| 34 | { |
| 35 | unsigned int len = nf_bridge_encap_header_len(skb); |
| 36 | |
| 37 | skb_push(skb, len); |
| 38 | skb->network_header -= len; |
| 39 | } |
| 40 | |
| 41 | int br_nf_pre_routing_finish_bridge(struct net *net, struct sock *sk, struct sk_buff *skb); |
| 42 | |
| 43 | static inline struct rtable *bridge_parent_rtable(const struct net_device *dev) |
| 44 | { |
| 45 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| 46 | struct net_bridge_port *port; |
| 47 | |
| 48 | port = br_port_get_rcu(dev); |
| 49 | return port ? &port->br->fake_rtable : NULL; |
| 50 | #else |
| 51 | return NULL; |
| 52 | #endif |
| 53 | } |
| 54 | |
| 55 | struct net_device *setup_pre_routing(struct sk_buff *skb, |
| 56 | const struct net *net); |
| 57 | |
| 58 | #if IS_ENABLED(CONFIG_IPV6) |
| 59 | int br_validate_ipv6(struct net *net, struct sk_buff *skb); |
| 60 | unsigned int br_nf_pre_routing_ipv6(void *priv, |
| 61 | struct sk_buff *skb, |
| 62 | const struct nf_hook_state *state); |
| 63 | #else |
| 64 | static inline int br_validate_ipv6(struct net *net, struct sk_buff *skb) |
| 65 | { |
| 66 | return -1; |
| 67 | } |
| 68 | |
| 69 | static inline unsigned int |
| 70 | br_nf_pre_routing_ipv6(void *priv, struct sk_buff *skb, |
| 71 | const struct nf_hook_state *state) |
| 72 | { |
| 73 | return NF_ACCEPT; |
| 74 | } |
| 75 | #endif |
| 76 | |
| 77 | #endif /* _BR_NETFILTER_H_ */ |
| 78 |
Warning: This file is not a C or C++ file. It does not have highlighting.