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Diffstat (limited to 'src/libfreeswan/ipcomp.h')
| -rw-r--r-- | src/libfreeswan/ipcomp.h | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/src/libfreeswan/ipcomp.h b/src/libfreeswan/ipcomp.h new file mode 100644 index 000000000..ed8095517 --- /dev/null +++ b/src/libfreeswan/ipcomp.h @@ -0,0 +1,61 @@ +/* + * IPCOMP zlib interface code. + * Copyright (C) 2000 Svenning Soerensen <svenning@post5.tele.dk> + * Copyright (C) 2000, 2001 Richard Guy Briggs <rgb@conscoop.ottawa.on.ca> + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY + * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License + * for more details. + + RCSID $Id: ipcomp.h,v 1.1 2004/03/15 20:35:25 as Exp $ + + */ + +/* SSS */ + +#ifndef _IPCOMP_H +#define _IPCOMP_H + +/* Prefix all global deflate symbols with "ipcomp_" to avoid collisions with ppp_deflate & ext2comp */ +#ifndef IPCOMP_PREFIX +#define IPCOMP_PREFIX +#endif /* IPCOMP_PREFIX */ + +#ifndef IPPROTO_COMP +#define IPPROTO_COMP 108 +#endif /* IPPROTO_COMP */ + +#ifdef CONFIG_IPSEC_DEBUG +extern int sysctl_ipsec_debug_ipcomp; +#endif /* CONFIG_IPSEC_DEBUG */ + +struct ipcomphdr { /* IPCOMP header */ + __u8 ipcomp_nh; /* Next header (protocol) */ + __u8 ipcomp_flags; /* Reserved, must be 0 */ + __u16 ipcomp_cpi; /* Compression Parameter Index */ +}; + +extern struct inet_protocol comp_protocol; +extern int sysctl_ipsec_debug_ipcomp; + +#define IPCOMP_UNCOMPRESSABLE 0x000000001 +#define IPCOMP_COMPRESSIONERROR 0x000000002 +#define IPCOMP_PARMERROR 0x000000004 +#define IPCOMP_DECOMPRESSIONERROR 0x000000008 + +#define IPCOMP_ADAPT_INITIAL_TRIES 8 +#define IPCOMP_ADAPT_INITIAL_SKIP 4 +#define IPCOMP_ADAPT_SUBSEQ_TRIES 2 +#define IPCOMP_ADAPT_SUBSEQ_SKIP 8 + +/* Function prototypes */ +struct sk_buff *skb_compress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags); +struct sk_buff *skb_decompress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags); + +#endif /* _IPCOMP_H */ |