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								#ifndef _NET_IPCOMP_H
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								#define _NET_IPCOMP_H
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								#include <linux/types.h>
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								#define IPCOMP_SCRATCH_SIZE     65400
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								struct crypto_comp;
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								struct ipcomp_data {
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									u16 threshold;
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									struct crypto_comp **tfms;
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								};
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								struct ip_comp_hdr;
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								struct sk_buff;
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								struct xfrm_state;
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								int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb);
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								int ipcomp_output(struct xfrm_state *x, struct sk_buff *skb);
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								void ipcomp_destroy(struct xfrm_state *x);
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								int ipcomp_init_state(struct xfrm_state *x);
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								static inline struct ip_comp_hdr *ip_comp_hdr(const struct sk_buff *skb)
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								{
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									return (struct ip_comp_hdr *)skb_transport_header(skb);
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								}
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								#endif
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