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01: #ifndef __LINUX_IP_NETFILTER_H
02: #define __LINUX_IP_NETFILTER_H
03: 
04: /* IPv4-specific defines for netfilter. 
05:  * (C)1998 Rusty Russell -- This code is GPL.
06:  */
07: 
08: #include <linux/netfilter.h>
09: 
10: /* only for userspace compatibility */
11: 
12: #include <limits.h> /* for INT_MIN, INT_MAX */
13: 
14: /* IP Cache bits. */
15: /* Src IP address. */
16: #define NFC_IP_SRC              0x0001
17: /* Dest IP address. */
18: #define NFC_IP_DST              0x0002
19: /* Input device. */
20: #define NFC_IP_IF_IN            0x0004
21: /* Output device. */
22: #define NFC_IP_IF_OUT           0x0008
23: /* TOS. */
24: #define NFC_IP_TOS              0x0010
25: /* Protocol. */
26: #define NFC_IP_PROTO            0x0020
27: /* IP options. */
28: #define NFC_IP_OPTIONS          0x0040
29: /* Frag & flags. */
30: #define NFC_IP_FRAG             0x0080
31: 
32: /* Per-protocol information: only matters if proto match. */
33: /* TCP flags. */
34: #define NFC_IP_TCPFLAGS         0x0100
35: /* Source port. */
36: #define NFC_IP_SRC_PT           0x0200
37: /* Dest port. */
38: #define NFC_IP_DST_PT           0x0400
39: /* Something else about the proto */
40: #define NFC_IP_PROTO_UNKNOWN    0x2000
41: 
42: /* IP Hooks */
43: /* After promisc drops, checksum checks. */
44: #define NF_IP_PRE_ROUTING       0
45: /* If the packet is destined for this box. */
46: #define NF_IP_LOCAL_IN          1
47: /* If the packet is destined for another interface. */
48: #define NF_IP_FORWARD           2
49: /* Packets coming from a local process. */
50: #define NF_IP_LOCAL_OUT         3
51: /* Packets about to hit the wire. */
52: #define NF_IP_POST_ROUTING      4
53: #define NF_IP_NUMHOOKS          5
54: 
55: enum nf_ip_hook_priorities {
56:         NF_IP_PRI_FIRST = INT_MIN,
57:         NF_IP_PRI_CONNTRACK_DEFRAG = -400,
58:         NF_IP_PRI_RAW = -300,
59:         NF_IP_PRI_SELINUX_FIRST = -225,
60:         NF_IP_PRI_CONNTRACK = -200,
61:         NF_IP_PRI_MANGLE = -150,
62:         NF_IP_PRI_NAT_DST = -100,
63:         NF_IP_PRI_FILTER = 0,
64:         NF_IP_PRI_SECURITY = 50,
65:         NF_IP_PRI_NAT_SRC = 100,
66:         NF_IP_PRI_SELINUX_LAST = 225,
67:         NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX,
68:         NF_IP_PRI_LAST = INT_MAX,
69: };
70: 
71: /* Arguments for setsockopt SOL_IP: */
72: /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */
73: /* 2.2 firewalling (+ masq) went from 64 through 76 */
74: /* 2.4 firewalling went 64 through 67. */
75: #define SO_ORIGINAL_DST 80
76: 
77: 
78: #endif /*__LINUX_IP_NETFILTER_H*/
79: 

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