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/* * Definitions for the SECurity layer * * Author: * Robert Muchsel <muchsel@acm.org> * * 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. */ #ifndef _LINUX_IPSEC_H #define _LINUX_IPSEC_H #include <linux/config.h> #include <linux/socket.h> #include <net/sock.h> /* Values for the set/getsockopt calls */ /* These defines are compatible with NRL IPv6, however their semantics is different */ #define IPSEC_LEVEL_NONE -1 /* send plaintext, accept any */ #define IPSEC_LEVEL_DEFAULT 0 /* encrypt/authenticate if possible */ /* the default MUST be 0, because a */ /* socket is initialized with 0's */ #define IPSEC_LEVEL_USE 1 /* use outbound, don't require inbound */ #define IPSEC_LEVEL_REQUIRE 2 /* require both directions */ #define IPSEC_LEVEL_UNIQUE 2 /* for compatibility only */ #endif /* _LINUX_IPSEC_H */