| #ifndef __LINUX_BRIDGE_NETFILTER_H |
| #define __LINUX_BRIDGE_NETFILTER_H |
| |
| #include <uapi/linux/netfilter_bridge.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) |
| |
| #define BRNF_PKT_TYPE 0x01 |
| #define BRNF_BRIDGED_DNAT 0x02 |
| #define BRNF_NF_BRIDGE_PREROUTING 0x08 |
| #define BRNF_8021Q 0x10 |
| #define BRNF_PPPoE 0x20 |
| |
| static inline unsigned int nf_bridge_mtu_reduction(const struct sk_buff *skb) |
| { |
| if (unlikely(skb->nf_bridge->mask & BRNF_PPPoE)) |
| return PPPOE_SES_HLEN; |
| return 0; |
| } |
| |
| int br_handle_frame_finish(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); |
| } |
| |
| #else |
| #define br_drop_fake_rtable(skb) do { } while (0) |
| #endif /* CONFIG_BRIDGE_NETFILTER */ |
| |
| #endif |