![Linus Torvalds](/assets/img/avatar_default.png)
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
#ifndef __LINUX_IP_NETFILTER_H
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#define __LINUX_IP_NETFILTER_H
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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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#include <linux/config.h>
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#include <linux/netfilter.h>
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/* IP Cache bits. */
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/* Src IP address. */
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#define NFC_IP_SRC 0x0001
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/* Dest IP address. */
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#define NFC_IP_DST 0x0002
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/* Input device. */
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#define NFC_IP_IF_IN 0x0004
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/* Output device. */
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#define NFC_IP_IF_OUT 0x0008
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/* TOS. */
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#define NFC_IP_TOS 0x0010
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/* Protocol. */
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#define NFC_IP_PROTO 0x0020
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/* IP options. */
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#define NFC_IP_OPTIONS 0x0040
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/* Frag & flags. */
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#define NFC_IP_FRAG 0x0080
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/* Per-protocol information: only matters if proto match. */
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/* TCP flags. */
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#define NFC_IP_TCPFLAGS 0x0100
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/* Source port. */
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#define NFC_IP_SRC_PT 0x0200
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/* Dest port. */
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#define NFC_IP_DST_PT 0x0400
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/* Something else about the proto */
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#define NFC_IP_PROTO_UNKNOWN 0x2000
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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_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_BRIDGE_SABOTAGE_FORWARD = -175,
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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_BRIDGE_SABOTAGE_LOCAL_OUT = -50,
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NF_IP_PRI_FILTER = 0,
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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_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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#ifdef __KERNEL__
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#ifdef CONFIG_NETFILTER_DEBUG
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void nf_debug_ip_local_deliver(struct sk_buff *skb);
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void nf_debug_ip_loopback_xmit(struct sk_buff *newskb);
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void nf_debug_ip_finish_output2(struct sk_buff *skb);
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#endif /*CONFIG_NETFILTER_DEBUG*/
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extern int ip_route_me_harder(struct sk_buff **pskb);
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/* Call this before modifying an existing IP packet: ensures it is
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modifiable and linear to the point you care about (writable_len).
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Returns true or false. */
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extern int skb_ip_make_writable(struct sk_buff **pskb,
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unsigned int writable_len);
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#endif /*__KERNEL__*/
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#endif /*__LINUX_IP_NETFILTER_H*/
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