| #ifndef __LINUX_BRIDGE_NETFILTER_H |
| #define __LINUX_BRIDGE_NETFILTER_H |
| |
| #include <uapi/linux/netfilter_bridge.h> |
| #include <linux/skbuff.h> |
| |
| enum nf_br_hook_priorities { |
| NF_BR_PRI_FIRST = INT_MIN, |
| NF_BR_PRI_NAT_DST_BRIDGED = -300, |
| NF_BR_PRI_FILTER_BRIDGED = -200, |
| NF_BR_PRI_BRNF = 0, |
| NF_BR_PRI_NAT_DST_OTHER = 100, |
| NF_BR_PRI_FILTER_OTHER = 200, |
| NF_BR_PRI_NAT_SRC = 300, |
| NF_BR_PRI_LAST = INT_MAX, |
| }; |
| |
| #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
| |
| int br_handle_frame_finish(struct net *net, struct sock *sk, struct sk_buff *skb); |
| |
| static inline void br_drop_fake_rtable(struct sk_buff *skb) |
| { |
| struct dst_entry *dst = skb_dst(skb); |
| |
| if (dst && (dst->flags & DST_FAKE_RTABLE)) |
| skb_dst_drop(skb); |
| } |
| |
| static inline int nf_bridge_get_physinif(const struct sk_buff *skb) |
| { |
| struct nf_bridge_info *nf_bridge; |
| |
| if (skb->nf_bridge == NULL) |
| return 0; |
| |
| nf_bridge = skb->nf_bridge; |
| return nf_bridge->physindev ? nf_bridge->physindev->ifindex : 0; |
| } |
| |
| static inline int nf_bridge_get_physoutif(const struct sk_buff *skb) |
| { |
| struct nf_bridge_info *nf_bridge; |
| |
| if (skb->nf_bridge == NULL) |
| return 0; |
| |
| nf_bridge = skb->nf_bridge; |
| return nf_bridge->physoutdev ? nf_bridge->physoutdev->ifindex : 0; |
| } |
| |
| static inline struct net_device * |
| nf_bridge_get_physindev(const struct sk_buff *skb) |
| { |
| return skb->nf_bridge ? skb->nf_bridge->physindev : NULL; |
| } |
| |
| static inline struct net_device * |
| nf_bridge_get_physoutdev(const struct sk_buff *skb) |
| { |
| return skb->nf_bridge ? skb->nf_bridge->physoutdev : NULL; |
| } |
| |
| static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb) |
| { |
| return skb->nf_bridge && skb->nf_bridge->in_prerouting; |
| } |
| #else |
| #define br_drop_fake_rtable(skb) do { } while (0) |
| static inline bool nf_bridge_in_prerouting(const struct sk_buff *skb) |
| { |
| return false; |
| } |
| #endif /* CONFIG_BRIDGE_NETFILTER */ |
| |
| #endif |