54 lines
1.5 KiB
C
54 lines
1.5 KiB
C
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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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/* IPv4-specific defines for netfilter.
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* (C)1998 Rusty Russell -- This code is GPL.
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*/
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#ifndef __LINUX_IP_NETFILTER_H
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#define __LINUX_IP_NETFILTER_H
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#include <linux/netfilter.h>
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/* only for userspace compatibility */
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#include <limits.h> /* for INT_MIN, INT_MAX */
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/* IP Hooks */
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/* After promisc drops, checksum checks. */
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#define NF_IP_PRE_ROUTING 0
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/* If the packet is destined for this box. */
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#define NF_IP_LOCAL_IN 1
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/* If the packet is destined for another interface. */
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#define NF_IP_FORWARD 2
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/* Packets coming from a local process. */
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#define NF_IP_LOCAL_OUT 3
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/* Packets about to hit the wire. */
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#define NF_IP_POST_ROUTING 4
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#define NF_IP_NUMHOOKS 5
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enum nf_ip_hook_priorities {
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NF_IP_PRI_FIRST = INT_MIN,
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NF_IP_PRI_RAW_BEFORE_DEFRAG = -450,
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NF_IP_PRI_CONNTRACK_DEFRAG = -400,
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NF_IP_PRI_RAW = -300,
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NF_IP_PRI_SELINUX_FIRST = -225,
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NF_IP_PRI_CONNTRACK = -200,
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NF_IP_PRI_MANGLE = -150,
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NF_IP_PRI_NAT_DST = -100,
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NF_IP_PRI_FILTER = 0,
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NF_IP_PRI_SECURITY = 50,
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NF_IP_PRI_NAT_SRC = 100,
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NF_IP_PRI_SELINUX_LAST = 225,
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NF_IP_PRI_CONNTRACK_HELPER = 300,
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NF_IP_PRI_CONNTRACK_CONFIRM = INT_MAX,
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NF_IP_PRI_LAST = INT_MAX,
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};
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/* Arguments for setsockopt SOL_IP: */
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/* 2.0 firewalling went from 64 through 71 (and +256, +512, etc). */
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/* 2.2 firewalling (+ masq) went from 64 through 76 */
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/* 2.4 firewalling went 64 through 67. */
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#define SO_ORIGINAL_DST 80
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#endif /* __LINUX_IP_NETFILTER_H */
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