1da177e4c3
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!
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
#ifndef _IP_CONNTRACK_CORE_H
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#define _IP_CONNTRACK_CORE_H
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#include <linux/netfilter.h>
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#include <linux/netfilter_ipv4/lockhelp.h>
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/* This header is used to share core functionality between the
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standalone connection tracking module, and the compatibility layer's use
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of connection tracking. */
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extern unsigned int ip_conntrack_in(unsigned int hooknum,
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struct sk_buff **pskb,
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const struct net_device *in,
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const struct net_device *out,
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int (*okfn)(struct sk_buff *));
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extern int ip_conntrack_init(void);
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extern void ip_conntrack_cleanup(void);
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struct ip_conntrack_protocol;
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extern int
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ip_ct_get_tuple(const struct iphdr *iph,
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const struct sk_buff *skb,
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unsigned int dataoff,
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struct ip_conntrack_tuple *tuple,
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const struct ip_conntrack_protocol *protocol);
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extern int
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ip_ct_invert_tuple(struct ip_conntrack_tuple *inverse,
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const struct ip_conntrack_tuple *orig,
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const struct ip_conntrack_protocol *protocol);
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/* Find a connection corresponding to a tuple. */
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struct ip_conntrack_tuple_hash *
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ip_conntrack_find_get(const struct ip_conntrack_tuple *tuple,
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const struct ip_conntrack *ignored_conntrack);
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extern int __ip_conntrack_confirm(struct sk_buff **pskb);
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/* Confirm a connection: returns NF_DROP if packet must be dropped. */
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static inline int ip_conntrack_confirm(struct sk_buff **pskb)
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{
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if ((*pskb)->nfct
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&& !is_confirmed((struct ip_conntrack *)(*pskb)->nfct))
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return __ip_conntrack_confirm(pskb);
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return NF_ACCEPT;
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}
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extern struct list_head *ip_conntrack_hash;
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extern struct list_head ip_conntrack_expect_list;
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DECLARE_RWLOCK_EXTERN(ip_conntrack_lock);
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#endif /* _IP_CONNTRACK_CORE_H */
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