| #ifndef __LINUX_NETFILTER_H |
| #define __LINUX_NETFILTER_H |
| |
| |
| /* Responses from hook functions. */ |
| #define NF_DROP 0 |
| #define NF_ACCEPT 1 |
| #define NF_STOLEN 2 |
| #define NF_QUEUE 3 |
| #define NF_REPEAT 4 |
| #define NF_STOP 5 |
| #define NF_MAX_VERDICT NF_STOP |
| |
| /* we overload the higher bits for encoding auxiliary data such as the queue |
| * number. Not nice, but better than additional function arguments. */ |
| #define NF_VERDICT_MASK 0x0000ffff |
| #define NF_VERDICT_BITS 16 |
| |
| #define NF_VERDICT_QMASK 0xffff0000 |
| #define NF_VERDICT_QBITS 16 |
| |
| #define NF_QUEUE_NR(x) (((x << NF_VERDICT_QBITS) & NF_VERDICT_QMASK) | NF_QUEUE) |
| |
| /* only for userspace compatibility */ |
| /* Generic cache responses from hook functions. |
| <= 0x2000 is used for protocol-flags. */ |
| #define NFC_UNKNOWN 0x4000 |
| #define NFC_ALTERED 0x8000 |
| |
| enum nf_inet_hooks { |
| NF_INET_PRE_ROUTING, |
| NF_INET_LOCAL_IN, |
| NF_INET_FORWARD, |
| NF_INET_LOCAL_OUT, |
| NF_INET_POST_ROUTING, |
| NF_INET_NUMHOOKS |
| }; |
| |
| union nf_inet_addr { |
| u_int32_t all[4]; |
| __be32 ip; |
| __be32 ip6[4]; |
| struct in_addr in; |
| struct in6_addr in6; |
| }; |
| |
| #endif /*__LINUX_NETFILTER_H*/ |