Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 1 | #ifndef _UAPI__LINUX_NETFILTER_H |
| 2 | #define _UAPI__LINUX_NETFILTER_H |
| 3 | |
| 4 | #include <linux/types.h> |
| 5 | #include <linux/compiler.h> |
Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame] | 6 | #include <linux/in.h> |
| 7 | #include <linux/in6.h> |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 8 | |
| 9 | /* Responses from hook functions. */ |
| 10 | #define NF_DROP 0 |
| 11 | #define NF_ACCEPT 1 |
| 12 | #define NF_STOLEN 2 |
| 13 | #define NF_QUEUE 3 |
| 14 | #define NF_REPEAT 4 |
Christopher Ferris | 2fd4b3c | 2017-02-21 12:32:08 -0800 | [diff] [blame] | 15 | #define NF_STOP 5 /* Deprecated, for userspace nf_queue compatibility. */ |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 16 | #define NF_MAX_VERDICT NF_STOP |
| 17 | |
| 18 | /* we overload the higher bits for encoding auxiliary data such as the queue |
| 19 | * number or errno values. Not nice, but better than additional function |
| 20 | * arguments. */ |
| 21 | #define NF_VERDICT_MASK 0x000000ff |
| 22 | |
| 23 | /* extra verdict flags have mask 0x0000ff00 */ |
| 24 | #define NF_VERDICT_FLAG_QUEUE_BYPASS 0x00008000 |
| 25 | |
| 26 | /* queue number (NF_QUEUE) or errno (NF_DROP) */ |
| 27 | #define NF_VERDICT_QMASK 0xffff0000 |
| 28 | #define NF_VERDICT_QBITS 16 |
| 29 | |
| 30 | #define NF_QUEUE_NR(x) ((((x) << 16) & NF_VERDICT_QMASK) | NF_QUEUE) |
| 31 | |
| 32 | #define NF_DROP_ERR(x) (((-x) << 16) | NF_DROP) |
| 33 | |
| 34 | /* only for userspace compatibility */ |
| 35 | #ifndef __KERNEL__ |
| 36 | /* Generic cache responses from hook functions. |
| 37 | <= 0x2000 is used for protocol-flags. */ |
| 38 | #define NFC_UNKNOWN 0x4000 |
| 39 | #define NFC_ALTERED 0x8000 |
| 40 | |
| 41 | /* NF_VERDICT_BITS should be 8 now, but userspace might break if this changes */ |
| 42 | #define NF_VERDICT_BITS 16 |
| 43 | #endif |
| 44 | |
| 45 | enum nf_inet_hooks { |
| 46 | NF_INET_PRE_ROUTING, |
| 47 | NF_INET_LOCAL_IN, |
| 48 | NF_INET_FORWARD, |
| 49 | NF_INET_LOCAL_OUT, |
| 50 | NF_INET_POST_ROUTING, |
| 51 | NF_INET_NUMHOOKS |
| 52 | }; |
| 53 | |
Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame] | 54 | enum nf_dev_hooks { |
| 55 | NF_NETDEV_INGRESS, |
| 56 | NF_NETDEV_NUMHOOKS |
| 57 | }; |
| 58 | |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 59 | enum { |
| 60 | NFPROTO_UNSPEC = 0, |
Christopher Ferris | e084501 | 2014-07-09 14:58:51 -0700 | [diff] [blame] | 61 | NFPROTO_INET = 1, |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 62 | NFPROTO_IPV4 = 2, |
| 63 | NFPROTO_ARP = 3, |
Christopher Ferris | 12e1f28 | 2016-02-04 12:35:07 -0800 | [diff] [blame] | 64 | NFPROTO_NETDEV = 5, |
Ben Cheng | 224b54f | 2013-10-15 18:26:18 -0700 | [diff] [blame] | 65 | NFPROTO_BRIDGE = 7, |
| 66 | NFPROTO_IPV6 = 10, |
| 67 | NFPROTO_DECNET = 12, |
| 68 | NFPROTO_NUMPROTO, |
| 69 | }; |
| 70 | |
| 71 | union nf_inet_addr { |
| 72 | __u32 all[4]; |
| 73 | __be32 ip; |
| 74 | __be32 ip6[4]; |
| 75 | struct in_addr in; |
| 76 | struct in6_addr in6; |
| 77 | }; |
| 78 | |
| 79 | #endif /* _UAPI__LINUX_NETFILTER_H */ |