diff options
Diffstat (limited to 'src/libfreeswan/ipsec_alg.h')
| -rw-r--r-- | src/libfreeswan/ipsec_alg.h | 254 |
1 files changed, 0 insertions, 254 deletions
diff --git a/src/libfreeswan/ipsec_alg.h b/src/libfreeswan/ipsec_alg.h deleted file mode 100644 index 6b85be645..000000000 --- a/src/libfreeswan/ipsec_alg.h +++ /dev/null @@ -1,254 +0,0 @@ -/* - * Modular extensions service and registration functions interface - * - * Author: JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar> - * - * $Id: ipsec_alg.h 3265 2007-10-08 19:52:55Z andreas $ - * - */ -/* - * 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. - * - */ -#ifndef IPSEC_ALG_H -#define IPSEC_ALG_H - -/* - * gcc >= 3.2 has removed __FUNCTION__, replaced by C99 __func__ - * *BUT* its a compiler variable. - */ -#if (__GNUC__ >= 3) -#ifndef __FUNCTION__ -#define __FUNCTION__ __func__ -#endif -#endif - -/* Version 0.8.1-0 */ -#define IPSEC_ALG_VERSION 0x00080100 - -#include <linux/types.h> -#include <linux/list.h> -#include <asm/atomic.h> -/* - * The following structs are used via pointers in ipsec_alg object to - * avoid ipsec_alg.h coupling with freeswan headers, thus simplifying - * module development - */ -struct ipsec_sa; -struct esp; - -/************************************** - * - * Main registration object - * - *************************************/ -#define IPSEC_ALG_VERSION_QUAD(v) \ - (v>>24),((v>>16)&0xff),((v>>8)&0xff),(v&0xff) -/* - * Main ipsec_alg objects: "OOPrograming wannabe" - * Hierachy (carefully handled with _minimal_ cast'ing): - * - * ipsec_alg+ - * +->ipsec_alg_enc (ixt_alg_type=SADB_EXT_SUPPORTED_ENCRYPT) - * +->ipsec_alg_auth (ixt_alg_type=SADB_EXT_SUPPORTED_AUTH) - */ - -/*************************************************************** - * - * INTERFACE object: struct ipsec_alg - * - ***************************************************************/ - -/* - * common part for every struct ipsec_alg_* - * (sortof poor's man OOP) - */ -#define IPSEC_ALG_STRUCT_COMMON \ - unsigned ixt_version; /* only allow this version (or 'near')*/ \ - struct list_head ixt_list; /* dlinked list */ \ - struct module *ixt_module; /* THIS_MODULE */ \ - unsigned ixt_state; /* state flags */ \ - atomic_t ixt_refcnt; /* ref. count when pointed from ipsec_sa */ \ - char ixt_name[16]; /* descriptive short name, eg. "3des" */ \ - void *ixt_data; /* private for algo implementation */ \ - uint8_t ixt_blocksize; /* blocksize in bytes */ \ - \ - /* THIS IS A COPY of struct supported (lib/pfkey.h) \ - * please keep in sync until we migrate 'supported' stuff \ - * to ipsec_alg \ - */ \ - uint16_t ixt_alg_type; /* correspond to IPSEC_ALG_{ENCRYPT,AUTH} */ \ - uint8_t ixt_alg_id; /* enc. alg. number, eg. ESP_3DES */ \ - uint8_t ixt_ivlen; /* ivlen in bits, expected to be multiple of 8! */ \ - uint16_t ixt_keyminbits;/* min. keybits (of entropy) */ \ - uint16_t ixt_keymaxbits;/* max. keybits (of entropy) */ - -#define ixt_support ixt_alg_type - -#define IPSEC_ALG_ST_SUPP 0x01 -#define IPSEC_ALG_ST_REGISTERED 0x02 -#define IPSEC_ALG_ST_EXCL 0x04 -struct ipsec_alg { - IPSEC_ALG_STRUCT_COMMON -}; -/* - * Note the const in cbc_encrypt IV arg: - * some ciphers like to toast passed IV (eg. 3DES): make a local IV copy - */ -struct ipsec_alg_enc { - IPSEC_ALG_STRUCT_COMMON - unsigned ixt_e_keylen; /* raw key length in bytes */ - unsigned ixt_e_ctx_size; /* sa_p->key_e_size */ - int (*ixt_e_set_key)(struct ipsec_alg_enc *alg, __u8 *key_e, const __u8 *key, size_t keysize); - __u8 *(*ixt_e_new_key)(struct ipsec_alg_enc *alg, const __u8 *key, size_t keysize); - void (*ixt_e_destroy_key)(struct ipsec_alg_enc *alg, __u8 *key_e); - int (*ixt_e_cbc_encrypt)(struct ipsec_alg_enc *alg, __u8 *key_e, __u8 *in, int ilen, const __u8 *iv, int encrypt); -}; -struct ipsec_alg_auth { - IPSEC_ALG_STRUCT_COMMON - unsigned ixt_a_keylen; /* raw key length in bytes */ - unsigned ixt_a_ctx_size; /* sa_p->key_a_size */ - unsigned ixt_a_authlen; /* 'natural' auth. hash len (bytes) */ - int (*ixt_a_hmac_set_key)(struct ipsec_alg_auth *alg, __u8 *key_a, const __u8 *key, int keylen); - int (*ixt_a_hmac_hash)(struct ipsec_alg_auth *alg, __u8 *key_a, const __u8 *dat, int len, __u8 *hash, int hashlen); -}; -/* - * These are _copies_ of SADB_EXT_SUPPORTED_{AUTH,ENCRYPT}, - * to avoid header coupling for true constants - * about headers ... "cp is your friend" --Linus - */ -#define IPSEC_ALG_TYPE_AUTH 14 -#define IPSEC_ALG_TYPE_ENCRYPT 15 - -/*************************************************************** - * - * INTERFACE for module loading,testing, and unloading - * - ***************************************************************/ -/* - registration calls */ -int register_ipsec_alg(struct ipsec_alg *); -int unregister_ipsec_alg(struct ipsec_alg *); -/* - optional (simple test) for algos */ -int ipsec_alg_test(unsigned alg_type, unsigned alg_id, int testparm); -/* inline wrappers (usefull for type validation */ -static inline int register_ipsec_alg_enc(struct ipsec_alg_enc *ixt) { - return register_ipsec_alg((struct ipsec_alg*)ixt); -} -static inline int unregister_ipsec_alg_enc(struct ipsec_alg_enc *ixt) { - return unregister_ipsec_alg((struct ipsec_alg*)ixt); -} -static inline int register_ipsec_alg_auth(struct ipsec_alg_auth *ixt) { - return register_ipsec_alg((struct ipsec_alg*)ixt); -} -static inline int unregister_ipsec_alg_auth(struct ipsec_alg_auth *ixt) { - return unregister_ipsec_alg((struct ipsec_alg*)ixt); -} - -/***************************************************************** - * - * INTERFACE for ENC services: key creation, encrypt function - * - *****************************************************************/ - -#define IPSEC_ALG_ENCRYPT 1 -#define IPSEC_ALG_DECRYPT 0 - -/* encryption key context creation function */ -int ipsec_alg_enc_key_create(struct ipsec_sa *sa_p); -/* - * ipsec_alg_esp_encrypt(): encrypt ilen bytes in idat returns - * 0 or ERR<0 - */ -int ipsec_alg_esp_encrypt(struct ipsec_sa *sa_p, __u8 *idat, int ilen, const __u8 *iv, int action); - -/*************************************************************** - * - * INTERFACE for AUTH services: key creation, hash functions - * - ***************************************************************/ -int ipsec_alg_auth_key_create(struct ipsec_sa *sa_p); -int ipsec_alg_sa_esp_hash(const struct ipsec_sa *sa_p, const __u8 *espp, int len, __u8 *hash, int hashlen) ; -#define ipsec_alg_sa_esp_update(c,k,l) ipsec_alg_sa_esp_hash(c,k,l,NULL,0) - -/* only called from ipsec_init.c */ -int ipsec_alg_init(void); - -/* algo module glue for static algos */ -void ipsec_alg_static_init(void); -typedef int (*ipsec_alg_init_func_t) (void); - -/********************************************** - * - * INTERFACE for ipsec_sa init and wipe - * - **********************************************/ - -/* returns true if ipsec_sa has ipsec_alg obj attached */ -/* - * Initializes ipsec_sa's ipsec_alg object, using already loaded - * proto, authalg, encalg.; links ipsec_alg objects (enc, auth) - */ -int ipsec_alg_sa_init(struct ipsec_sa *sa_p); -/* - * Destroys ipsec_sa's ipsec_alg object - * unlinking ipsec_alg objects - */ -int ipsec_alg_sa_wipe(struct ipsec_sa *sa_p); - -/********************************************** - * - * 2.2 backport for some 2.4 useful module stuff - * - **********************************************/ -#ifdef MODULE -#ifndef THIS_MODULE -#define THIS_MODULE (&__this_module) -#endif -#ifndef module_init -typedef int (*__init_module_func_t)(void); -typedef void (*__cleanup_module_func_t)(void); - -#define module_init(x) \ - int init_module(void) __attribute__((alias(#x))); \ - static inline __init_module_func_t __init_module_inline(void) \ - { return x; } -#define module_exit(x) \ - void cleanup_module(void) __attribute__((alias(#x))); \ - static inline __cleanup_module_func_t __cleanup_module_inline(void) \ - { return x; } -#endif - -#define IPSEC_ALG_MODULE_INIT( func_name ) \ - static int func_name(void); \ - module_init(func_name); \ - static int __init func_name(void) -#define IPSEC_ALG_MODULE_EXIT( func_name ) \ - static void func_name(void); \ - module_exit(func_name); \ - static void __exit func_name(void) -#else /* not MODULE */ -#ifndef THIS_MODULE -#define THIS_MODULE NULL -#endif -/* - * I only want module_init() magic - * when algo.c file *is THE MODULE*, in all other - * cases, initialization is called explicitely from ipsec_alg_init() - */ -#define IPSEC_ALG_MODULE_INIT( func_name ) \ - extern int func_name(void); \ - int func_name(void) -#define IPSEC_ALG_MODULE_EXIT( func_name ) \ - extern void func_name(void); \ - void func_name(void) -#endif - -#endif /* IPSEC_ALG_H */ |