1 /* IPv4-specific defines for netfilter.
2 * (C)1998 Rusty Russell -- This code is GPL.
4 #ifndef _UAPI__LINUX_IP_NETFILTER_H
5 #define _UAPI__LINUX_IP_NETFILTER_H
8 #include <linux/netfilter.h>
10 /* only for userspace compatibility */
13 #include <limits.h> /* for INT_MIN, INT_MAX */
17 #define NFC_IP_SRC 0x0001
18 /* Dest IP address. */
19 #define NFC_IP_DST 0x0002
21 #define NFC_IP_IF_IN 0x0004
23 #define NFC_IP_IF_OUT 0x0008
25 #define NFC_IP_TOS 0x0010
27 #define NFC_IP_PROTO 0x0020
29 #define NFC_IP_OPTIONS 0x0040
31 #define NFC_IP_FRAG 0x0080
33 /* Per-protocol information: only matters if proto match. */
35 #define NFC_IP_TCPFLAGS 0x0100
37 #define NFC_IP_SRC_PT 0x0200
39 #define NFC_IP_DST_PT 0x0400
40 /* Something else about the proto */
41 #define NFC_IP_PROTO_UNKNOWN 0x2000
44 /* After promisc drops, checksum checks. */
45 #define NF_IP_PRE_ROUTING 0
46 /* If the packet is destined for this box. */
47 #define NF_IP_LOCAL_IN 1
48 /* If the packet is destined for another interface. */
49 #define NF_IP_FORWARD 2
50 /* Packets coming from a local process. */
51 #define NF_IP_LOCAL_OUT 3
52 /* Packets about to hit the wire. */
53 #define NF_IP_POST_ROUTING 4
54 #define NF_IP_NUMHOOKS 5
55 #endif /* ! __KERNEL__ */
57 enum nf_ip_hook_priorities {
58 NF_IP_PRI_FIRST = INT_MIN,
59 NF_IP_PRI_CONNTRACK_DEFRAG = -400,
61 NF_IP_PRI_SELINUX_FIRST = -225,
62 NF_IP_PRI_CONNTRACK = -200,
63 NF_IP_PRI_MANGLE = -150,
64 NF_IP_PRI_NAT_DST = -100,
66 NF_IP_PRI_SECURITY = 50,
67 NF_IP_PRI_NAT_SRC = 100,
68 NF_IP_PRI_SELINUX_LAST = 225,
69 NF_IP_PRI_CONNTRACK_HELPER = 300,
70 NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX,
71 NF_IP_PRI_LAST = INT_MAX,
74 /* Arguments for setsockopt SOL_IP: */
75 /* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */
76 /* 2.2 firewalling (+ masq) went from 64 through 76 */
77 /* 2.4 firewalling went 64 through 67. */
78 #define SO_ORIGINAL_DST 80
81 #endif /* _UAPI__LINUX_IP_NETFILTER_H */