Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932294AbVLIP0J (ORCPT ); Fri, 9 Dec 2005 10:26:09 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932331AbVLIP0J (ORCPT ); Fri, 9 Dec 2005 10:26:09 -0500 Received: from mtagate2.de.ibm.com ([195.212.29.151]:13308 "EHLO mtagate2.de.ibm.com") by vger.kernel.org with ESMTP id S932294AbVLIP0E (ORCPT ); Fri, 9 Dec 2005 10:26:04 -0500 Date: Fri, 9 Dec 2005 16:26:02 +0100 From: Martin Schwidefsky To: akpm@osdl.org, jan.glauber@de.ibm.com, linux-kernel@vger.kernel.org Subject: [patch 7/17] s390: in-kernel crypto rename. Message-ID: <20051209152602.GH6532@skybase.boeblingen.de.ibm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.5.11 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 59246 Lines: 2004 From: Jan Glauber [patch 7/17] s390: in-kernel crypto rename. Replace all references to z990 by s390 in the in-kernel crypto files in arch/s390/crypto. The code is not specific to a particular machine (z990) but to the s390 platform. Big diff, does nothing.. Signed-off-by: Jan Glauber Signed-off-by: Martin Schwidefsky --- arch/s390/crypto/Makefile | 6 arch/s390/crypto/crypt_s390.h | 383 ++++++++++++++++++++++++++++++++++++ arch/s390/crypto/crypt_s390_query.c | 113 ++++++++++ arch/s390/crypto/crypt_z990.h | 374 ----------------------------------- arch/s390/crypto/crypt_z990_query.c | 111 ---------- arch/s390/crypto/des_s390.c | 284 ++++++++++++++++++++++++++ arch/s390/crypto/des_z990.c | 284 -------------------------- arch/s390/crypto/sha1_s390.c | 167 +++++++++++++++ arch/s390/crypto/sha1_z990.c | 167 --------------- arch/s390/defconfig | 4 crypto/Kconfig | 8 11 files changed, 956 insertions(+), 945 deletions(-) diff -urpN linux-2.6/arch/s390/crypto/crypt_s390.h linux-2.6-patched/arch/s390/crypto/crypt_s390.h --- linux-2.6/arch/s390/crypto/crypt_s390.h 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6-patched/arch/s390/crypto/crypt_s390.h 2005-12-09 14:24:26.000000000 +0100 @@ -0,0 +1,383 @@ +/* + * Cryptographic API. + * + * Support for s390 cryptographic instructions. + * + * Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation + * Author(s): Thomas Spatzier (tspat@de.ibm.com) + * + * 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 _CRYPTO_ARCH_S390_CRYPT_S390_H +#define _CRYPTO_ARCH_S390_CRYPT_S390_H + +#include + +#define CRYPT_S390_OP_MASK 0xFF00 +#define CRYPT_S390_FUNC_MASK 0x00FF + +/* s930 cryptographic operations */ +enum crypt_s390_operations { + CRYPT_S390_KM = 0x0100, + CRYPT_S390_KMC = 0x0200, + CRYPT_S390_KIMD = 0x0300, + CRYPT_S390_KLMD = 0x0400, + CRYPT_S390_KMAC = 0x0500 +}; + +/* function codes for KM (CIPHER MESSAGE) instruction + * 0x80 is the decipher modifier bit + */ +enum crypt_s390_km_func { + KM_QUERY = CRYPT_S390_KM | 0, + KM_DEA_ENCRYPT = CRYPT_S390_KM | 1, + KM_DEA_DECRYPT = CRYPT_S390_KM | 1 | 0x80, + KM_TDEA_128_ENCRYPT = CRYPT_S390_KM | 2, + KM_TDEA_128_DECRYPT = CRYPT_S390_KM | 2 | 0x80, + KM_TDEA_192_ENCRYPT = CRYPT_S390_KM | 3, + KM_TDEA_192_DECRYPT = CRYPT_S390_KM | 3 | 0x80, +}; + +/* function codes for KMC (CIPHER MESSAGE WITH CHAINING) + * instruction + */ +enum crypt_s390_kmc_func { + KMC_QUERY = CRYPT_S390_KMC | 0, + KMC_DEA_ENCRYPT = CRYPT_S390_KMC | 1, + KMC_DEA_DECRYPT = CRYPT_S390_KMC | 1 | 0x80, + KMC_TDEA_128_ENCRYPT = CRYPT_S390_KMC | 2, + KMC_TDEA_128_DECRYPT = CRYPT_S390_KMC | 2 | 0x80, + KMC_TDEA_192_ENCRYPT = CRYPT_S390_KMC | 3, + KMC_TDEA_192_DECRYPT = CRYPT_S390_KMC | 3 | 0x80, +}; + +/* function codes for KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) + * instruction + */ +enum crypt_s390_kimd_func { + KIMD_QUERY = CRYPT_S390_KIMD | 0, + KIMD_SHA_1 = CRYPT_S390_KIMD | 1, +}; + +/* function codes for KLMD (COMPUTE LAST MESSAGE DIGEST) + * instruction + */ +enum crypt_s390_klmd_func { + KLMD_QUERY = CRYPT_S390_KLMD | 0, + KLMD_SHA_1 = CRYPT_S390_KLMD | 1, +}; + +/* function codes for KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) + * instruction + */ +enum crypt_s390_kmac_func { + KMAC_QUERY = CRYPT_S390_KMAC | 0, + KMAC_DEA = CRYPT_S390_KMAC | 1, + KMAC_TDEA_128 = CRYPT_S390_KMAC | 2, + KMAC_TDEA_192 = CRYPT_S390_KMAC | 3 +}; + +/* status word for s390 crypto instructions' QUERY functions */ +struct crypt_s390_query_status { + u64 high; + u64 low; +}; + +/* + * Standard fixup and ex_table sections for crypt_s390 inline functions. + * label 0: the s390 crypto operation + * label 1: just after 1 to catch illegal operation exception + * (unsupported model) + * label 6: the return point after fixup + * label 7: set error value if exception _in_ crypto operation + * label 8: set error value if illegal operation exception + * [ret] is the variable to receive the error code + * [ERR] is the error code value + */ +#ifndef __s390x__ +#define __crypt_s390_fixup \ + ".section .fixup,\"ax\" \n" \ + "7: lhi %0,%h[e1] \n" \ + " bras 1,9f \n" \ + " .long 6b \n" \ + "8: lhi %0,%h[e2] \n" \ + " bras 1,9f \n" \ + " .long 6b \n" \ + "9: l 1,0(1) \n" \ + " br 1 \n" \ + ".previous \n" \ + ".section __ex_table,\"a\" \n" \ + " .align 4 \n" \ + " .long 0b,7b \n" \ + " .long 1b,8b \n" \ + ".previous" +#else /* __s390x__ */ +#define __crypt_s390_fixup \ + ".section .fixup,\"ax\" \n" \ + "7: lhi %0,%h[e1] \n" \ + " jg 6b \n" \ + "8: lhi %0,%h[e2] \n" \ + " jg 6b \n" \ + ".previous\n" \ + ".section __ex_table,\"a\" \n" \ + " .align 8 \n" \ + " .quad 0b,7b \n" \ + " .quad 1b,8b \n" \ + ".previous" +#endif /* __s390x__ */ + +/* + * Standard code for setting the result of s390 crypto instructions. + * %0: the register which will receive the result + * [result]: the register containing the result (e.g. second operand length + * to compute number of processed bytes]. + */ +#ifndef __s390x__ +#define __crypt_s390_set_result \ + " lr %0,%[result] \n" +#else /* __s390x__ */ +#define __crypt_s390_set_result \ + " lgr %0,%[result] \n" +#endif + +/* + * Executes the KM (CIPHER MESSAGE) operation of the CPU. + * @param func: the function code passed to KM; see crypt_s390_km_func + * @param param: address of parameter block; see POP for details on each func + * @param dest: address of destination memory area + * @param src: address of source memory area + * @param src_len: length of src operand in bytes + * @returns < zero for failure, 0 for the query func, number of processed bytes + * for encryption/decryption funcs + */ +static inline int +crypt_s390_km(long func, void* param, u8* dest, const u8* src, long src_len) +{ + register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; + register void* __param asm("1") = param; + register u8* __dest asm("4") = dest; + register const u8* __src asm("2") = src; + register long __src_len asm("3") = src_len; + int ret; + + ret = 0; + __asm__ __volatile__ ( + "0: .insn rre,0xB92E0000,%1,%2 \n" /* KM opcode */ + "1: brc 1,0b \n" /* handle partial completion */ + __crypt_s390_set_result + "6: \n" + __crypt_s390_fixup + : "+d" (ret), "+a" (__dest), "+a" (__src), + [result] "+d" (__src_len) + : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), + "a" (__param) + : "cc", "memory" + ); + if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){ + ret = src_len - ret; + } + return ret; +} + +/* + * Executes the KMC (CIPHER MESSAGE WITH CHAINING) operation of the CPU. + * @param func: the function code passed to KM; see crypt_s390_kmc_func + * @param param: address of parameter block; see POP for details on each func + * @param dest: address of destination memory area + * @param src: address of source memory area + * @param src_len: length of src operand in bytes + * @returns < zero for failure, 0 for the query func, number of processed bytes + * for encryption/decryption funcs + */ +static inline int +crypt_s390_kmc(long func, void* param, u8* dest, const u8* src, long src_len) +{ + register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; + register void* __param asm("1") = param; + register u8* __dest asm("4") = dest; + register const u8* __src asm("2") = src; + register long __src_len asm("3") = src_len; + int ret; + + ret = 0; + __asm__ __volatile__ ( + "0: .insn rre,0xB92F0000,%1,%2 \n" /* KMC opcode */ + "1: brc 1,0b \n" /* handle partial completion */ + __crypt_s390_set_result + "6: \n" + __crypt_s390_fixup + : "+d" (ret), "+a" (__dest), "+a" (__src), + [result] "+d" (__src_len) + : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), + "a" (__param) + : "cc", "memory" + ); + if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){ + ret = src_len - ret; + } + return ret; +} + +/* + * Executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) operation + * of the CPU. + * @param func: the function code passed to KM; see crypt_s390_kimd_func + * @param param: address of parameter block; see POP for details on each func + * @param src: address of source memory area + * @param src_len: length of src operand in bytes + * @returns < zero for failure, 0 for the query func, number of processed bytes + * for digest funcs + */ +static inline int +crypt_s390_kimd(long func, void* param, const u8* src, long src_len) +{ + register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; + register void* __param asm("1") = param; + register const u8* __src asm("2") = src; + register long __src_len asm("3") = src_len; + int ret; + + ret = 0; + __asm__ __volatile__ ( + "0: .insn rre,0xB93E0000,%1,%1 \n" /* KIMD opcode */ + "1: brc 1,0b \n" /* handle partical completion */ + __crypt_s390_set_result + "6: \n" + __crypt_s390_fixup + : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) + : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), + "a" (__param) + : "cc", "memory" + ); + if (ret >= 0 && (func & CRYPT_S390_FUNC_MASK)){ + ret = src_len - ret; + } + return ret; +} + +/* + * Executes the KLMD (COMPUTE LAST MESSAGE DIGEST) operation of the CPU. + * @param func: the function code passed to KM; see crypt_s390_klmd_func + * @param param: address of parameter block; see POP for details on each func + * @param src: address of source memory area + * @param src_len: length of src operand in bytes + * @returns < zero for failure, 0 for the query func, number of processed bytes + * for digest funcs + */ +static inline int +crypt_s390_klmd(long func, void* param, const u8* src, long src_len) +{ + register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; + register void* __param asm("1") = param; + register const u8* __src asm("2") = src; + register long __src_len asm("3") = src_len; + int ret; + + ret = 0; + __asm__ __volatile__ ( + "0: .insn rre,0xB93F0000,%1,%1 \n" /* KLMD opcode */ + "1: brc 1,0b \n" /* handle partical completion */ + __crypt_s390_set_result + "6: \n" + __crypt_s390_fixup + : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) + : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), + "a" (__param) + : "cc", "memory" + ); + if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){ + ret = src_len - ret; + } + return ret; +} + +/* + * Executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) operation + * of the CPU. + * @param func: the function code passed to KM; see crypt_s390_klmd_func + * @param param: address of parameter block; see POP for details on each func + * @param src: address of source memory area + * @param src_len: length of src operand in bytes + * @returns < zero for failure, 0 for the query func, number of processed bytes + * for digest funcs + */ +static inline int +crypt_s390_kmac(long func, void* param, const u8* src, long src_len) +{ + register long __func asm("0") = func & CRYPT_S390_FUNC_MASK; + register void* __param asm("1") = param; + register const u8* __src asm("2") = src; + register long __src_len asm("3") = src_len; + int ret; + + ret = 0; + __asm__ __volatile__ ( + "0: .insn rre,0xB91E0000,%5,%5 \n" /* KMAC opcode */ + "1: brc 1,0b \n" /* handle partical completion */ + __crypt_s390_set_result + "6: \n" + __crypt_s390_fixup + : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) + : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), + "a" (__param) + : "cc", "memory" + ); + if (ret >= 0 && func & CRYPT_S390_FUNC_MASK){ + ret = src_len - ret; + } + return ret; +} + +/** + * Tests if a specific crypto function is implemented on the machine. + * @param func: the function code of the specific function; 0 if op in general + * @return 1 if func available; 0 if func or op in general not available + */ +static inline int +crypt_s390_func_available(int func) +{ + int ret; + + struct crypt_s390_query_status status = { + .high = 0, + .low = 0 + }; + switch (func & CRYPT_S390_OP_MASK){ + case CRYPT_S390_KM: + ret = crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0); + break; + case CRYPT_S390_KMC: + ret = crypt_s390_kmc(KMC_QUERY, &status, NULL, NULL, 0); + break; + case CRYPT_S390_KIMD: + ret = crypt_s390_kimd(KIMD_QUERY, &status, NULL, 0); + break; + case CRYPT_S390_KLMD: + ret = crypt_s390_klmd(KLMD_QUERY, &status, NULL, 0); + break; + case CRYPT_S390_KMAC: + ret = crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0); + break; + default: + ret = 0; + return ret; + } + if (ret >= 0){ + func &= CRYPT_S390_FUNC_MASK; + func &= 0x7f; //mask modifier bit + if (func < 64){ + ret = (status.high >> (64 - func - 1)) & 0x1; + } else { + ret = (status.low >> (128 - func - 1)) & 0x1; + } + } else { + ret = 0; + } + return ret; +} + +#endif // _CRYPTO_ARCH_S390_CRYPT_S390_H diff -urpN linux-2.6/arch/s390/crypto/crypt_s390_query.c linux-2.6-patched/arch/s390/crypto/crypt_s390_query.c --- linux-2.6/arch/s390/crypto/crypt_s390_query.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6-patched/arch/s390/crypto/crypt_s390_query.c 2005-12-09 14:24:26.000000000 +0100 @@ -0,0 +1,113 @@ +/* + * Cryptographic API. + * + * Support for s390 cryptographic instructions. + * Testing module for querying processor crypto capabilities. + * + * Copyright (c) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Thomas Spatzier (tspat@de.ibm.com) + * + * 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. + * + */ +#include +#include +#include +#include +#include "crypt_s390.h" + +static void query_available_functions(void) +{ + printk(KERN_INFO "#####################\n"); + + /* query available KM functions */ + printk(KERN_INFO "KM_QUERY: %d\n", + crypt_s390_func_available(KM_QUERY)); + printk(KERN_INFO "KM_DEA: %d\n", + crypt_s390_func_available(KM_DEA_ENCRYPT)); + printk(KERN_INFO "KM_TDEA_128: %d\n", + crypt_s390_func_available(KM_TDEA_128_ENCRYPT)); + printk(KERN_INFO "KM_TDEA_192: %d\n", + crypt_s390_func_available(KM_TDEA_192_ENCRYPT)); + + /* query available KMC functions */ + printk(KERN_INFO "KMC_QUERY: %d\n", + crypt_s390_func_available(KMC_QUERY)); + printk(KERN_INFO "KMC_DEA: %d\n", + crypt_s390_func_available(KMC_DEA_ENCRYPT)); + printk(KERN_INFO "KMC_TDEA_128: %d\n", + crypt_s390_func_available(KMC_TDEA_128_ENCRYPT)); + printk(KERN_INFO "KMC_TDEA_192: %d\n", + crypt_s390_func_available(KMC_TDEA_192_ENCRYPT)); + + /* query available KIMD fucntions */ + printk(KERN_INFO "KIMD_QUERY: %d\n", + crypt_s390_func_available(KIMD_QUERY)); + printk(KERN_INFO "KIMD_SHA_1: %d\n", + crypt_s390_func_available(KIMD_SHA_1)); + + /* query available KLMD functions */ + printk(KERN_INFO "KLMD_QUERY: %d\n", + crypt_s390_func_available(KLMD_QUERY)); + printk(KERN_INFO "KLMD_SHA_1: %d\n", + crypt_s390_func_available(KLMD_SHA_1)); + + /* query available KMAC functions */ + printk(KERN_INFO "KMAC_QUERY: %d\n", + crypt_s3990_func_available(KMAC_QUERY)); + printk(KERN_INFO "KMAC_DEA: %d\n", + crypt_s390_func_available(KMAC_DEA)); + printk(KERN_INFO "KMAC_TDEA_128: %d\n", + crypt_s390_func_available(KMAC_TDEA_128)); + printk(KERN_INFO "KMAC_TDEA_192: %d\n", + crypt_s390_func_available(KMAC_TDEA_192)); +} + +static int init(void) +{ + struct crypt_s390_query_status status = { + .high = 0, + .low = 0 + }; + + printk(KERN_INFO "crypt_s390: querying available crypto functions\n"); + crypt_s390_km(KM_QUERY, &status, NULL, NULL, 0); + printk(KERN_INFO "KM:\t%016llx %016llx\n", + (unsigned long long) status.high, + (unsigned long long) status.low); + status.high = status.low = 0; + crypt_s390_kmc(KMC_QUERY, &status, NULL, NULL, 0); + printk(KERN_INFO "KMC:\t%016llx %016llx\n", + (unsigned long long) status.high, + (unsigned long long) status.low); + status.high = status.low = 0; + crypt_s390_kimd(KIMD_QUERY, &status, NULL, 0); + printk(KERN_INFO "KIMD:\t%016llx %016llx\n", + (unsigned long long) status.high, + (unsigned long long) status.low); + status.high = status.low = 0; + crypt_s390_klmd(KLMD_QUERY, &status, NULL, 0); + printk(KERN_INFO "KLMD:\t%016llx %016llx\n", + (unsigned long long) status.high, + (unsigned long long) status.low); + status.high = status.low = 0; + crypt_s390_kmac(KMAC_QUERY, &status, NULL, 0); + printk(KERN_INFO "KMAC:\t%016llx %016llx\n", + (unsigned long long) status.high, + (unsigned long long) status.low); + + query_available_functions(); + return -ECANCELED; +} + +static void __exit cleanup(void) +{ +} + +module_init(init); +module_exit(cleanup); + +MODULE_LICENSE("GPL"); diff -urpN linux-2.6/arch/s390/crypto/crypt_z990.h linux-2.6-patched/arch/s390/crypto/crypt_z990.h --- linux-2.6/arch/s390/crypto/crypt_z990.h 2005-10-28 02:02:08.000000000 +0200 +++ linux-2.6-patched/arch/s390/crypto/crypt_z990.h 2005-12-09 14:24:26.000000000 +0100 @@ -1,374 +0,0 @@ -/* - * Cryptographic API. - * - * Support for z990 cryptographic instructions. - * - * Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation - * Author(s): Thomas Spatzier (tspat@de.ibm.com) - * - * 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 _CRYPTO_ARCH_S390_CRYPT_Z990_H -#define _CRYPTO_ARCH_S390_CRYPT_Z990_H - -#include - -#define CRYPT_Z990_OP_MASK 0xFF00 -#define CRYPT_Z990_FUNC_MASK 0x00FF - - -/*z990 cryptographic operations*/ -enum crypt_z990_operations { - CRYPT_Z990_KM = 0x0100, - CRYPT_Z990_KMC = 0x0200, - CRYPT_Z990_KIMD = 0x0300, - CRYPT_Z990_KLMD = 0x0400, - CRYPT_Z990_KMAC = 0x0500 -}; - -/*function codes for KM (CIPHER MESSAGE) instruction*/ -enum crypt_z990_km_func { - KM_QUERY = CRYPT_Z990_KM | 0, - KM_DEA_ENCRYPT = CRYPT_Z990_KM | 1, - KM_DEA_DECRYPT = CRYPT_Z990_KM | 1 | 0x80, //modifier bit->decipher - KM_TDEA_128_ENCRYPT = CRYPT_Z990_KM | 2, - KM_TDEA_128_DECRYPT = CRYPT_Z990_KM | 2 | 0x80, - KM_TDEA_192_ENCRYPT = CRYPT_Z990_KM | 3, - KM_TDEA_192_DECRYPT = CRYPT_Z990_KM | 3 | 0x80, -}; - -/*function codes for KMC (CIPHER MESSAGE WITH CHAINING) instruction*/ -enum crypt_z990_kmc_func { - KMC_QUERY = CRYPT_Z990_KMC | 0, - KMC_DEA_ENCRYPT = CRYPT_Z990_KMC | 1, - KMC_DEA_DECRYPT = CRYPT_Z990_KMC | 1 | 0x80, //modifier bit->decipher - KMC_TDEA_128_ENCRYPT = CRYPT_Z990_KMC | 2, - KMC_TDEA_128_DECRYPT = CRYPT_Z990_KMC | 2 | 0x80, - KMC_TDEA_192_ENCRYPT = CRYPT_Z990_KMC | 3, - KMC_TDEA_192_DECRYPT = CRYPT_Z990_KMC | 3 | 0x80, -}; - -/*function codes for KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) instruction*/ -enum crypt_z990_kimd_func { - KIMD_QUERY = CRYPT_Z990_KIMD | 0, - KIMD_SHA_1 = CRYPT_Z990_KIMD | 1, -}; - -/*function codes for KLMD (COMPUTE LAST MESSAGE DIGEST) instruction*/ -enum crypt_z990_klmd_func { - KLMD_QUERY = CRYPT_Z990_KLMD | 0, - KLMD_SHA_1 = CRYPT_Z990_KLMD | 1, -}; - -/*function codes for KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) instruction*/ -enum crypt_z990_kmac_func { - KMAC_QUERY = CRYPT_Z990_KMAC | 0, - KMAC_DEA = CRYPT_Z990_KMAC | 1, - KMAC_TDEA_128 = CRYPT_Z990_KMAC | 2, - KMAC_TDEA_192 = CRYPT_Z990_KMAC | 3 -}; - -/*status word for z990 crypto instructions' QUERY functions*/ -struct crypt_z990_query_status { - u64 high; - u64 low; -}; - -/* - * Standard fixup and ex_table sections for crypt_z990 inline functions. - * label 0: the z990 crypto operation - * label 1: just after 1 to catch illegal operation exception on non-z990 - * label 6: the return point after fixup - * label 7: set error value if exception _in_ crypto operation - * label 8: set error value if illegal operation exception - * [ret] is the variable to receive the error code - * [ERR] is the error code value - */ -#ifndef __s390x__ -#define __crypt_z990_fixup \ - ".section .fixup,\"ax\" \n" \ - "7: lhi %0,%h[e1] \n" \ - " bras 1,9f \n" \ - " .long 6b \n" \ - "8: lhi %0,%h[e2] \n" \ - " bras 1,9f \n" \ - " .long 6b \n" \ - "9: l 1,0(1) \n" \ - " br 1 \n" \ - ".previous \n" \ - ".section __ex_table,\"a\" \n" \ - " .align 4 \n" \ - " .long 0b,7b \n" \ - " .long 1b,8b \n" \ - ".previous" -#else /* __s390x__ */ -#define __crypt_z990_fixup \ - ".section .fixup,\"ax\" \n" \ - "7: lhi %0,%h[e1] \n" \ - " jg 6b \n" \ - "8: lhi %0,%h[e2] \n" \ - " jg 6b \n" \ - ".previous\n" \ - ".section __ex_table,\"a\" \n" \ - " .align 8 \n" \ - " .quad 0b,7b \n" \ - " .quad 1b,8b \n" \ - ".previous" -#endif /* __s390x__ */ - -/* - * Standard code for setting the result of z990 crypto instructions. - * %0: the register which will receive the result - * [result]: the register containing the result (e.g. second operand length - * to compute number of processed bytes]. - */ -#ifndef __s390x__ -#define __crypt_z990_set_result \ - " lr %0,%[result] \n" -#else /* __s390x__ */ -#define __crypt_z990_set_result \ - " lgr %0,%[result] \n" -#endif - -/* - * Executes the KM (CIPHER MESSAGE) operation of the z990 CPU. - * @param func: the function code passed to KM; see crypt_z990_km_func - * @param param: address of parameter block; see POP for details on each func - * @param dest: address of destination memory area - * @param src: address of source memory area - * @param src_len: length of src operand in bytes - * @returns < zero for failure, 0 for the query func, number of processed bytes - * for encryption/decryption funcs - */ -static inline int -crypt_z990_km(long func, void* param, u8* dest, const u8* src, long src_len) -{ - register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK; - register void* __param asm("1") = param; - register u8* __dest asm("4") = dest; - register const u8* __src asm("2") = src; - register long __src_len asm("3") = src_len; - int ret; - - ret = 0; - __asm__ __volatile__ ( - "0: .insn rre,0xB92E0000,%1,%2 \n" //KM opcode - "1: brc 1,0b \n" //handle partial completion - __crypt_z990_set_result - "6: \n" - __crypt_z990_fixup - : "+d" (ret), "+a" (__dest), "+a" (__src), - [result] "+d" (__src_len) - : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), - "a" (__param) - : "cc", "memory" - ); - if (ret >= 0 && func & CRYPT_Z990_FUNC_MASK){ - ret = src_len - ret; - } - return ret; -} - -/* - * Executes the KMC (CIPHER MESSAGE WITH CHAINING) operation of the z990 CPU. - * @param func: the function code passed to KM; see crypt_z990_kmc_func - * @param param: address of parameter block; see POP for details on each func - * @param dest: address of destination memory area - * @param src: address of source memory area - * @param src_len: length of src operand in bytes - * @returns < zero for failure, 0 for the query func, number of processed bytes - * for encryption/decryption funcs - */ -static inline int -crypt_z990_kmc(long func, void* param, u8* dest, const u8* src, long src_len) -{ - register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK; - register void* __param asm("1") = param; - register u8* __dest asm("4") = dest; - register const u8* __src asm("2") = src; - register long __src_len asm("3") = src_len; - int ret; - - ret = 0; - __asm__ __volatile__ ( - "0: .insn rre,0xB92F0000,%1,%2 \n" //KMC opcode - "1: brc 1,0b \n" //handle partial completion - __crypt_z990_set_result - "6: \n" - __crypt_z990_fixup - : "+d" (ret), "+a" (__dest), "+a" (__src), - [result] "+d" (__src_len) - : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), - "a" (__param) - : "cc", "memory" - ); - if (ret >= 0 && func & CRYPT_Z990_FUNC_MASK){ - ret = src_len - ret; - } - return ret; -} - -/* - * Executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) operation - * of the z990 CPU. - * @param func: the function code passed to KM; see crypt_z990_kimd_func - * @param param: address of parameter block; see POP for details on each func - * @param src: address of source memory area - * @param src_len: length of src operand in bytes - * @returns < zero for failure, 0 for the query func, number of processed bytes - * for digest funcs - */ -static inline int -crypt_z990_kimd(long func, void* param, const u8* src, long src_len) -{ - register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK; - register void* __param asm("1") = param; - register const u8* __src asm("2") = src; - register long __src_len asm("3") = src_len; - int ret; - - ret = 0; - __asm__ __volatile__ ( - "0: .insn rre,0xB93E0000,%1,%1 \n" //KIMD opcode - "1: brc 1,0b \n" /*handle partical completion of kimd*/ - __crypt_z990_set_result - "6: \n" - __crypt_z990_fixup - : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) - : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), - "a" (__param) - : "cc", "memory" - ); - if (ret >= 0 && (func & CRYPT_Z990_FUNC_MASK)){ - ret = src_len - ret; - } - return ret; -} - -/* - * Executes the KLMD (COMPUTE LAST MESSAGE DIGEST) operation of the z990 CPU. - * @param func: the function code passed to KM; see crypt_z990_klmd_func - * @param param: address of parameter block; see POP for details on each func - * @param src: address of source memory area - * @param src_len: length of src operand in bytes - * @returns < zero for failure, 0 for the query func, number of processed bytes - * for digest funcs - */ -static inline int -crypt_z990_klmd(long func, void* param, const u8* src, long src_len) -{ - register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK; - register void* __param asm("1") = param; - register const u8* __src asm("2") = src; - register long __src_len asm("3") = src_len; - int ret; - - ret = 0; - __asm__ __volatile__ ( - "0: .insn rre,0xB93F0000,%1,%1 \n" //KLMD opcode - "1: brc 1,0b \n" /*handle partical completion of klmd*/ - __crypt_z990_set_result - "6: \n" - __crypt_z990_fixup - : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) - : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), - "a" (__param) - : "cc", "memory" - ); - if (ret >= 0 && func & CRYPT_Z990_FUNC_MASK){ - ret = src_len - ret; - } - return ret; -} - -/* - * Executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) operation - * of the z990 CPU. - * @param func: the function code passed to KM; see crypt_z990_klmd_func - * @param param: address of parameter block; see POP for details on each func - * @param src: address of source memory area - * @param src_len: length of src operand in bytes - * @returns < zero for failure, 0 for the query func, number of processed bytes - * for digest funcs - */ -static inline int -crypt_z990_kmac(long func, void* param, const u8* src, long src_len) -{ - register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK; - register void* __param asm("1") = param; - register const u8* __src asm("2") = src; - register long __src_len asm("3") = src_len; - int ret; - - ret = 0; - __asm__ __volatile__ ( - "0: .insn rre,0xB91E0000,%5,%5 \n" //KMAC opcode - "1: brc 1,0b \n" /*handle partical completion of klmd*/ - __crypt_z990_set_result - "6: \n" - __crypt_z990_fixup - : "+d" (ret), "+a" (__src), [result] "+d" (__src_len) - : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func), - "a" (__param) - : "cc", "memory" - ); - if (ret >= 0 && func & CRYPT_Z990_FUNC_MASK){ - ret = src_len - ret; - } - return ret; -} - -/** - * Tests if a specific z990 crypto function is implemented on the machine. - * @param func: the function code of the specific function; 0 if op in general - * @return 1 if func available; 0 if func or op in general not available - */ -static inline int -crypt_z990_func_available(int func) -{ - int ret; - - struct crypt_z990_query_status status = { - .high = 0, - .low = 0 - }; - switch (func & CRYPT_Z990_OP_MASK){ - case CRYPT_Z990_KM: - ret = crypt_z990_km(KM_QUERY, &status, NULL, NULL, 0); - break; - case CRYPT_Z990_KMC: - ret = crypt_z990_kmc(KMC_QUERY, &status, NULL, NULL, 0); - break; - case CRYPT_Z990_KIMD: - ret = crypt_z990_kimd(KIMD_QUERY, &status, NULL, 0); - break; - case CRYPT_Z990_KLMD: - ret = crypt_z990_klmd(KLMD_QUERY, &status, NULL, 0); - break; - case CRYPT_Z990_KMAC: - ret = crypt_z990_kmac(KMAC_QUERY, &status, NULL, 0); - break; - default: - ret = 0; - return ret; - } - if (ret >= 0){ - func &= CRYPT_Z990_FUNC_MASK; - func &= 0x7f; //mask modifier bit - if (func < 64){ - ret = (status.high >> (64 - func - 1)) & 0x1; - } else { - ret = (status.low >> (128 - func - 1)) & 0x1; - } - } else { - ret = 0; - } - return ret; -} - - -#endif // _CRYPTO_ARCH_S390_CRYPT_Z990_H diff -urpN linux-2.6/arch/s390/crypto/crypt_z990_query.c linux-2.6-patched/arch/s390/crypto/crypt_z990_query.c --- linux-2.6/arch/s390/crypto/crypt_z990_query.c 2005-10-28 02:02:08.000000000 +0200 +++ linux-2.6-patched/arch/s390/crypto/crypt_z990_query.c 2005-12-09 14:24:26.000000000 +0100 @@ -1,111 +0,0 @@ -/* - * Cryptographic API. - * - * Support for z990 cryptographic instructions. - * Testing module for querying processor crypto capabilities. - * - * Copyright (c) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation - * Author(s): Thomas Spatzier (tspat@de.ibm.com) - * - * 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. - * - */ -#include -#include -#include -#include -#include "crypt_z990.h" - -static void -query_available_functions(void) -{ - printk(KERN_INFO "#####################\n"); - //query available KM functions - printk(KERN_INFO "KM_QUERY: %d\n", - crypt_z990_func_available(KM_QUERY)); - printk(KERN_INFO "KM_DEA: %d\n", - crypt_z990_func_available(KM_DEA_ENCRYPT)); - printk(KERN_INFO "KM_TDEA_128: %d\n", - crypt_z990_func_available(KM_TDEA_128_ENCRYPT)); - printk(KERN_INFO "KM_TDEA_192: %d\n", - crypt_z990_func_available(KM_TDEA_192_ENCRYPT)); - //query available KMC functions - printk(KERN_INFO "KMC_QUERY: %d\n", - crypt_z990_func_available(KMC_QUERY)); - printk(KERN_INFO "KMC_DEA: %d\n", - crypt_z990_func_available(KMC_DEA_ENCRYPT)); - printk(KERN_INFO "KMC_TDEA_128: %d\n", - crypt_z990_func_available(KMC_TDEA_128_ENCRYPT)); - printk(KERN_INFO "KMC_TDEA_192: %d\n", - crypt_z990_func_available(KMC_TDEA_192_ENCRYPT)); - //query available KIMD fucntions - printk(KERN_INFO "KIMD_QUERY: %d\n", - crypt_z990_func_available(KIMD_QUERY)); - printk(KERN_INFO "KIMD_SHA_1: %d\n", - crypt_z990_func_available(KIMD_SHA_1)); - //query available KLMD functions - printk(KERN_INFO "KLMD_QUERY: %d\n", - crypt_z990_func_available(KLMD_QUERY)); - printk(KERN_INFO "KLMD_SHA_1: %d\n", - crypt_z990_func_available(KLMD_SHA_1)); - //query available KMAC functions - printk(KERN_INFO "KMAC_QUERY: %d\n", - crypt_z990_func_available(KMAC_QUERY)); - printk(KERN_INFO "KMAC_DEA: %d\n", - crypt_z990_func_available(KMAC_DEA)); - printk(KERN_INFO "KMAC_TDEA_128: %d\n", - crypt_z990_func_available(KMAC_TDEA_128)); - printk(KERN_INFO "KMAC_TDEA_192: %d\n", - crypt_z990_func_available(KMAC_TDEA_192)); -} - -static int -init(void) -{ - struct crypt_z990_query_status status = { - .high = 0, - .low = 0 - }; - - printk(KERN_INFO "crypt_z990: querying available crypto functions\n"); - crypt_z990_km(KM_QUERY, &status, NULL, NULL, 0); - printk(KERN_INFO "KM: %016llx %016llx\n", - (unsigned long long) status.high, - (unsigned long long) status.low); - status.high = status.low = 0; - crypt_z990_kmc(KMC_QUERY, &status, NULL, NULL, 0); - printk(KERN_INFO "KMC: %016llx %016llx\n", - (unsigned long long) status.high, - (unsigned long long) status.low); - status.high = status.low = 0; - crypt_z990_kimd(KIMD_QUERY, &status, NULL, 0); - printk(KERN_INFO "KIMD: %016llx %016llx\n", - (unsigned long long) status.high, - (unsigned long long) status.low); - status.high = status.low = 0; - crypt_z990_klmd(KLMD_QUERY, &status, NULL, 0); - printk(KERN_INFO "KLMD: %016llx %016llx\n", - (unsigned long long) status.high, - (unsigned long long) status.low); - status.high = status.low = 0; - crypt_z990_kmac(KMAC_QUERY, &status, NULL, 0); - printk(KERN_INFO "KMAC: %016llx %016llx\n", - (unsigned long long) status.high, - (unsigned long long) status.low); - - query_available_functions(); - return -1; -} - -static void __exit -cleanup(void) -{ -} - -module_init(init); -module_exit(cleanup); - -MODULE_LICENSE("GPL"); diff -urpN linux-2.6/arch/s390/crypto/des_s390.c linux-2.6-patched/arch/s390/crypto/des_s390.c --- linux-2.6/arch/s390/crypto/des_s390.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6-patched/arch/s390/crypto/des_s390.c 2005-12-09 14:24:26.000000000 +0100 @@ -0,0 +1,284 @@ +/* + * Cryptographic API. + * + * s390 implementation of the DES Cipher Algorithm. + * + * Copyright (c) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Thomas Spatzier (tspat@de.ibm.com) + * + * + * 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. + * + */ +#include +#include +#include +#include +#include +#include +#include "crypt_s390.h" +#include "crypto_des.h" + +#define DES_BLOCK_SIZE 8 +#define DES_KEY_SIZE 8 + +#define DES3_128_KEY_SIZE (2 * DES_KEY_SIZE) +#define DES3_128_BLOCK_SIZE DES_BLOCK_SIZE + +#define DES3_192_KEY_SIZE (3 * DES_KEY_SIZE) +#define DES3_192_BLOCK_SIZE DES_BLOCK_SIZE + +struct crypt_s390_des_ctx { + u8 iv[DES_BLOCK_SIZE]; + u8 key[DES_KEY_SIZE]; +}; + +struct crypt_s390_des3_128_ctx { + u8 iv[DES_BLOCK_SIZE]; + u8 key[DES3_128_KEY_SIZE]; +}; + +struct crypt_s390_des3_192_ctx { + u8 iv[DES_BLOCK_SIZE]; + u8 key[DES3_192_KEY_SIZE]; +}; + +static int +des_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags) +{ + struct crypt_s390_des_ctx *dctx; + int ret; + + dctx = ctx; + //test if key is valid (not a weak key) + ret = crypto_des_check_key(key, keylen, flags); + if (ret == 0){ + memcpy(dctx->key, key, keylen); + } + return ret; +} + + +static void +des_encrypt(void *ctx, u8 *dst, const u8 *src) +{ + struct crypt_s390_des_ctx *dctx; + + dctx = ctx; + crypt_s390_km(KM_DEA_ENCRYPT, dctx->key, dst, src, DES_BLOCK_SIZE); +} + +static void +des_decrypt(void *ctx, u8 *dst, const u8 *src) +{ + struct crypt_s390_des_ctx *dctx; + + dctx = ctx; + crypt_s390_km(KM_DEA_DECRYPT, dctx->key, dst, src, DES_BLOCK_SIZE); +} + +static struct crypto_alg des_alg = { + .cra_name = "des", + .cra_flags = CRYPTO_ALG_TYPE_CIPHER, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct crypt_s390_des_ctx), + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(des_alg.cra_list), + .cra_u = { .cipher = { + .cia_min_keysize = DES_KEY_SIZE, + .cia_max_keysize = DES_KEY_SIZE, + .cia_setkey = des_setkey, + .cia_encrypt = des_encrypt, + .cia_decrypt = des_decrypt } } +}; + +/* + * RFC2451: + * + * For DES-EDE3, there is no known need to reject weak or + * complementation keys. Any weakness is obviated by the use of + * multiple keys. + * + * However, if the two independent 64-bit keys are equal, + * then the DES3 operation is simply the same as DES. + * Implementers MUST reject keys that exhibit this property. + * + */ +static int +des3_128_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags) +{ + int i, ret; + struct crypt_s390_des3_128_ctx *dctx; + const u8* temp_key = key; + + dctx = ctx; + if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE))) { + + *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED; + return -EINVAL; + } + for (i = 0; i < 2; i++, temp_key += DES_KEY_SIZE) { + ret = crypto_des_check_key(temp_key, DES_KEY_SIZE, flags); + if (ret < 0) + return ret; + } + memcpy(dctx->key, key, keylen); + return 0; +} + +static void +des3_128_encrypt(void *ctx, u8 *dst, const u8 *src) +{ + struct crypt_s390_des3_128_ctx *dctx; + + dctx = ctx; + crypt_s390_km(KM_TDEA_128_ENCRYPT, dctx->key, dst, (void*)src, + DES3_128_BLOCK_SIZE); +} + +static void +des3_128_decrypt(void *ctx, u8 *dst, const u8 *src) +{ + struct crypt_s390_des3_128_ctx *dctx; + + dctx = ctx; + crypt_s390_km(KM_TDEA_128_DECRYPT, dctx->key, dst, (void*)src, + DES3_128_BLOCK_SIZE); +} + +static struct crypto_alg des3_128_alg = { + .cra_name = "des3_ede128", + .cra_flags = CRYPTO_ALG_TYPE_CIPHER, + .cra_blocksize = DES3_128_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct crypt_s390_des3_128_ctx), + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(des3_128_alg.cra_list), + .cra_u = { .cipher = { + .cia_min_keysize = DES3_128_KEY_SIZE, + .cia_max_keysize = DES3_128_KEY_SIZE, + .cia_setkey = des3_128_setkey, + .cia_encrypt = des3_128_encrypt, + .cia_decrypt = des3_128_decrypt } } +}; + +/* + * RFC2451: + * + * For DES-EDE3, there is no known need to reject weak or + * complementation keys. Any weakness is obviated by the use of + * multiple keys. + * + * However, if the first two or last two independent 64-bit keys are + * equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the + * same as DES. Implementers MUST reject keys that exhibit this + * property. + * + */ +static int +des3_192_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags) +{ + int i, ret; + struct crypt_s390_des3_192_ctx *dctx; + const u8* temp_key; + + dctx = ctx; + temp_key = key; + if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) && + memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2], + DES_KEY_SIZE))) { + + *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED; + return -EINVAL; + } + for (i = 0; i < 3; i++, temp_key += DES_KEY_SIZE) { + ret = crypto_des_check_key(temp_key, DES_KEY_SIZE, flags); + if (ret < 0){ + return ret; + } + } + memcpy(dctx->key, key, keylen); + return 0; +} + +static void +des3_192_encrypt(void *ctx, u8 *dst, const u8 *src) +{ + struct crypt_s390_des3_192_ctx *dctx; + + dctx = ctx; + crypt_s390_km(KM_TDEA_192_ENCRYPT, dctx->key, dst, (void*)src, + DES3_192_BLOCK_SIZE); +} + +static void +des3_192_decrypt(void *ctx, u8 *dst, const u8 *src) +{ + struct crypt_s390_des3_192_ctx *dctx; + + dctx = ctx; + crypt_s390_km(KM_TDEA_192_DECRYPT, dctx->key, dst, (void*)src, + DES3_192_BLOCK_SIZE); +} + +static struct crypto_alg des3_192_alg = { + .cra_name = "des3_ede", + .cra_flags = CRYPTO_ALG_TYPE_CIPHER, + .cra_blocksize = DES3_192_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct crypt_s390_des3_192_ctx), + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(des3_192_alg.cra_list), + .cra_u = { .cipher = { + .cia_min_keysize = DES3_192_KEY_SIZE, + .cia_max_keysize = DES3_192_KEY_SIZE, + .cia_setkey = des3_192_setkey, + .cia_encrypt = des3_192_encrypt, + .cia_decrypt = des3_192_decrypt } } +}; + + + +static int +init(void) +{ + int ret; + + if (!crypt_s390_func_available(KM_DEA_ENCRYPT) || + !crypt_s390_func_available(KM_TDEA_128_ENCRYPT) || + !crypt_s390_func_available(KM_TDEA_192_ENCRYPT)){ + return -ENOSYS; + } + + ret = 0; + ret |= (crypto_register_alg(&des_alg) == 0)? 0:1; + ret |= (crypto_register_alg(&des3_128_alg) == 0)? 0:2; + ret |= (crypto_register_alg(&des3_192_alg) == 0)? 0:4; + if (ret){ + crypto_unregister_alg(&des3_192_alg); + crypto_unregister_alg(&des3_128_alg); + crypto_unregister_alg(&des_alg); + return -EEXIST; + } + + printk(KERN_INFO "crypt_s390: des_s390 loaded.\n"); + return 0; +} + +static void __exit +fini(void) +{ + crypto_unregister_alg(&des3_192_alg); + crypto_unregister_alg(&des3_128_alg); + crypto_unregister_alg(&des_alg); +} + +module_init(init); +module_exit(fini); + +MODULE_ALIAS("des"); +MODULE_ALIAS("des3_ede"); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms"); diff -urpN linux-2.6/arch/s390/crypto/des_z990.c linux-2.6-patched/arch/s390/crypto/des_z990.c --- linux-2.6/arch/s390/crypto/des_z990.c 2005-10-28 02:02:08.000000000 +0200 +++ linux-2.6-patched/arch/s390/crypto/des_z990.c 2005-12-09 14:24:26.000000000 +0100 @@ -1,284 +0,0 @@ -/* - * Cryptographic API. - * - * z990 implementation of the DES Cipher Algorithm. - * - * Copyright (c) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation - * Author(s): Thomas Spatzier (tspat@de.ibm.com) - * - * - * 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. - * - */ -#include -#include -#include -#include -#include -#include -#include "crypt_z990.h" -#include "crypto_des.h" - -#define DES_BLOCK_SIZE 8 -#define DES_KEY_SIZE 8 - -#define DES3_128_KEY_SIZE (2 * DES_KEY_SIZE) -#define DES3_128_BLOCK_SIZE DES_BLOCK_SIZE - -#define DES3_192_KEY_SIZE (3 * DES_KEY_SIZE) -#define DES3_192_BLOCK_SIZE DES_BLOCK_SIZE - -struct crypt_z990_des_ctx { - u8 iv[DES_BLOCK_SIZE]; - u8 key[DES_KEY_SIZE]; -}; - -struct crypt_z990_des3_128_ctx { - u8 iv[DES_BLOCK_SIZE]; - u8 key[DES3_128_KEY_SIZE]; -}; - -struct crypt_z990_des3_192_ctx { - u8 iv[DES_BLOCK_SIZE]; - u8 key[DES3_192_KEY_SIZE]; -}; - -static int -des_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags) -{ - struct crypt_z990_des_ctx *dctx; - int ret; - - dctx = ctx; - //test if key is valid (not a weak key) - ret = crypto_des_check_key(key, keylen, flags); - if (ret == 0){ - memcpy(dctx->key, key, keylen); - } - return ret; -} - - -static void -des_encrypt(void *ctx, u8 *dst, const u8 *src) -{ - struct crypt_z990_des_ctx *dctx; - - dctx = ctx; - crypt_z990_km(KM_DEA_ENCRYPT, dctx->key, dst, src, DES_BLOCK_SIZE); -} - -static void -des_decrypt(void *ctx, u8 *dst, const u8 *src) -{ - struct crypt_z990_des_ctx *dctx; - - dctx = ctx; - crypt_z990_km(KM_DEA_DECRYPT, dctx->key, dst, src, DES_BLOCK_SIZE); -} - -static struct crypto_alg des_alg = { - .cra_name = "des", - .cra_flags = CRYPTO_ALG_TYPE_CIPHER, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_z990_des_ctx), - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(des_alg.cra_list), - .cra_u = { .cipher = { - .cia_min_keysize = DES_KEY_SIZE, - .cia_max_keysize = DES_KEY_SIZE, - .cia_setkey = des_setkey, - .cia_encrypt = des_encrypt, - .cia_decrypt = des_decrypt } } -}; - -/* - * RFC2451: - * - * For DES-EDE3, there is no known need to reject weak or - * complementation keys. Any weakness is obviated by the use of - * multiple keys. - * - * However, if the two independent 64-bit keys are equal, - * then the DES3 operation is simply the same as DES. - * Implementers MUST reject keys that exhibit this property. - * - */ -static int -des3_128_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags) -{ - int i, ret; - struct crypt_z990_des3_128_ctx *dctx; - const u8* temp_key = key; - - dctx = ctx; - if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE))) { - - *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED; - return -EINVAL; - } - for (i = 0; i < 2; i++, temp_key += DES_KEY_SIZE) { - ret = crypto_des_check_key(temp_key, DES_KEY_SIZE, flags); - if (ret < 0) - return ret; - } - memcpy(dctx->key, key, keylen); - return 0; -} - -static void -des3_128_encrypt(void *ctx, u8 *dst, const u8 *src) -{ - struct crypt_z990_des3_128_ctx *dctx; - - dctx = ctx; - crypt_z990_km(KM_TDEA_128_ENCRYPT, dctx->key, dst, (void*)src, - DES3_128_BLOCK_SIZE); -} - -static void -des3_128_decrypt(void *ctx, u8 *dst, const u8 *src) -{ - struct crypt_z990_des3_128_ctx *dctx; - - dctx = ctx; - crypt_z990_km(KM_TDEA_128_DECRYPT, dctx->key, dst, (void*)src, - DES3_128_BLOCK_SIZE); -} - -static struct crypto_alg des3_128_alg = { - .cra_name = "des3_ede128", - .cra_flags = CRYPTO_ALG_TYPE_CIPHER, - .cra_blocksize = DES3_128_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_z990_des3_128_ctx), - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(des3_128_alg.cra_list), - .cra_u = { .cipher = { - .cia_min_keysize = DES3_128_KEY_SIZE, - .cia_max_keysize = DES3_128_KEY_SIZE, - .cia_setkey = des3_128_setkey, - .cia_encrypt = des3_128_encrypt, - .cia_decrypt = des3_128_decrypt } } -}; - -/* - * RFC2451: - * - * For DES-EDE3, there is no known need to reject weak or - * complementation keys. Any weakness is obviated by the use of - * multiple keys. - * - * However, if the first two or last two independent 64-bit keys are - * equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the - * same as DES. Implementers MUST reject keys that exhibit this - * property. - * - */ -static int -des3_192_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags) -{ - int i, ret; - struct crypt_z990_des3_192_ctx *dctx; - const u8* temp_key; - - dctx = ctx; - temp_key = key; - if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) && - memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2], - DES_KEY_SIZE))) { - - *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED; - return -EINVAL; - } - for (i = 0; i < 3; i++, temp_key += DES_KEY_SIZE) { - ret = crypto_des_check_key(temp_key, DES_KEY_SIZE, flags); - if (ret < 0){ - return ret; - } - } - memcpy(dctx->key, key, keylen); - return 0; -} - -static void -des3_192_encrypt(void *ctx, u8 *dst, const u8 *src) -{ - struct crypt_z990_des3_192_ctx *dctx; - - dctx = ctx; - crypt_z990_km(KM_TDEA_192_ENCRYPT, dctx->key, dst, (void*)src, - DES3_192_BLOCK_SIZE); -} - -static void -des3_192_decrypt(void *ctx, u8 *dst, const u8 *src) -{ - struct crypt_z990_des3_192_ctx *dctx; - - dctx = ctx; - crypt_z990_km(KM_TDEA_192_DECRYPT, dctx->key, dst, (void*)src, - DES3_192_BLOCK_SIZE); -} - -static struct crypto_alg des3_192_alg = { - .cra_name = "des3_ede", - .cra_flags = CRYPTO_ALG_TYPE_CIPHER, - .cra_blocksize = DES3_192_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_z990_des3_192_ctx), - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(des3_192_alg.cra_list), - .cra_u = { .cipher = { - .cia_min_keysize = DES3_192_KEY_SIZE, - .cia_max_keysize = DES3_192_KEY_SIZE, - .cia_setkey = des3_192_setkey, - .cia_encrypt = des3_192_encrypt, - .cia_decrypt = des3_192_decrypt } } -}; - - - -static int -init(void) -{ - int ret; - - if (!crypt_z990_func_available(KM_DEA_ENCRYPT) || - !crypt_z990_func_available(KM_TDEA_128_ENCRYPT) || - !crypt_z990_func_available(KM_TDEA_192_ENCRYPT)){ - return -ENOSYS; - } - - ret = 0; - ret |= (crypto_register_alg(&des_alg) == 0)? 0:1; - ret |= (crypto_register_alg(&des3_128_alg) == 0)? 0:2; - ret |= (crypto_register_alg(&des3_192_alg) == 0)? 0:4; - if (ret){ - crypto_unregister_alg(&des3_192_alg); - crypto_unregister_alg(&des3_128_alg); - crypto_unregister_alg(&des_alg); - return -EEXIST; - } - - printk(KERN_INFO "crypt_z990: des_z990 loaded.\n"); - return 0; -} - -static void __exit -fini(void) -{ - crypto_unregister_alg(&des3_192_alg); - crypto_unregister_alg(&des3_128_alg); - crypto_unregister_alg(&des_alg); -} - -module_init(init); -module_exit(fini); - -MODULE_ALIAS("des"); -MODULE_ALIAS("des3_ede"); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms"); diff -urpN linux-2.6/arch/s390/crypto/Makefile linux-2.6-patched/arch/s390/crypto/Makefile --- linux-2.6/arch/s390/crypto/Makefile 2005-10-28 02:02:08.000000000 +0200 +++ linux-2.6-patched/arch/s390/crypto/Makefile 2005-12-09 14:24:26.000000000 +0100 @@ -2,7 +2,7 @@ # Cryptographic API # -obj-$(CONFIG_CRYPTO_SHA1_Z990) += sha1_z990.o -obj-$(CONFIG_CRYPTO_DES_Z990) += des_z990.o des_check_key.o +obj-$(CONFIG_CRYPTO_SHA1_S390) += sha1_s390.o +obj-$(CONFIG_CRYPTO_DES_S390) += des_s390.o des_check_key.o -obj-$(CONFIG_CRYPTO_TEST) += crypt_z990_query.o +obj-$(CONFIG_CRYPTO_TEST) += crypt_s390_query.o diff -urpN linux-2.6/arch/s390/crypto/sha1_s390.c linux-2.6-patched/arch/s390/crypto/sha1_s390.c --- linux-2.6/arch/s390/crypto/sha1_s390.c 1970-01-01 01:00:00.000000000 +0100 +++ linux-2.6-patched/arch/s390/crypto/sha1_s390.c 2005-12-09 14:24:26.000000000 +0100 @@ -0,0 +1,167 @@ +/* + * Cryptographic API. + * + * s390 implementation of the SHA1 Secure Hash Algorithm. + * + * Derived from cryptoapi implementation, adapted for in-place + * scatterlist interface. Originally based on the public domain + * implementation written by Steve Reid. + * + * s390 Version: + * Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation + * Author(s): Thomas Spatzier (tspat@de.ibm.com) + * + * Derived from "crypto/sha1.c" + * Copyright (c) Alan Smithee. + * Copyright (c) Andrew McDonald + * Copyright (c) Jean-Francois Dive + * + * 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. + * + */ +#include +#include +#include +#include +#include +#include +#include "crypt_s390.h" + +#define SHA1_DIGEST_SIZE 20 +#define SHA1_BLOCK_SIZE 64 + +struct crypt_s390_sha1_ctx { + u64 count; + u32 state[5]; + u32 buf_len; + u8 buffer[2 * SHA1_BLOCK_SIZE]; +}; + +static void +sha1_init(void *ctx) +{ + static const struct crypt_s390_sha1_ctx initstate = { + .state = { + 0x67452301, + 0xEFCDAB89, + 0x98BADCFE, + 0x10325476, + 0xC3D2E1F0 + }, + }; + memcpy(ctx, &initstate, sizeof(initstate)); +} + +static void +sha1_update(void *ctx, const u8 *data, unsigned int len) +{ + struct crypt_s390_sha1_ctx *sctx; + long imd_len; + + sctx = ctx; + sctx->count += len * 8; //message bit length + + //anything in buffer yet? -> must be completed + if (sctx->buf_len && (sctx->buf_len + len) >= SHA1_BLOCK_SIZE) { + //complete full block and hash + memcpy(sctx->buffer + sctx->buf_len, data, + SHA1_BLOCK_SIZE - sctx->buf_len); + crypt_s390_kimd(KIMD_SHA_1, sctx->state, sctx->buffer, + SHA1_BLOCK_SIZE); + data += SHA1_BLOCK_SIZE - sctx->buf_len; + len -= SHA1_BLOCK_SIZE - sctx->buf_len; + sctx->buf_len = 0; + } + + //rest of data contains full blocks? + imd_len = len & ~0x3ful; + if (imd_len){ + crypt_s390_kimd(KIMD_SHA_1, sctx->state, data, imd_len); + data += imd_len; + len -= imd_len; + } + //anything left? store in buffer + if (len){ + memcpy(sctx->buffer + sctx->buf_len , data, len); + sctx->buf_len += len; + } +} + + +static void +pad_message(struct crypt_s390_sha1_ctx* sctx) +{ + int index; + + index = sctx->buf_len; + sctx->buf_len = (sctx->buf_len < 56)? + SHA1_BLOCK_SIZE:2 * SHA1_BLOCK_SIZE; + //start pad with 1 + sctx->buffer[index] = 0x80; + //pad with zeros + index++; + memset(sctx->buffer + index, 0x00, sctx->buf_len - index); + //append length + memcpy(sctx->buffer + sctx->buf_len - 8, &sctx->count, + sizeof sctx->count); +} + +/* Add padding and return the message digest. */ +static void +sha1_final(void* ctx, u8 *out) +{ + struct crypt_s390_sha1_ctx *sctx = ctx; + + //must perform manual padding + pad_message(sctx); + crypt_s390_kimd(KIMD_SHA_1, sctx->state, sctx->buffer, sctx->buf_len); + //copy digest to out + memcpy(out, sctx->state, SHA1_DIGEST_SIZE); + /* Wipe context */ + memset(sctx, 0, sizeof *sctx); +} + +static struct crypto_alg alg = { + .cra_name = "sha1", + .cra_flags = CRYPTO_ALG_TYPE_DIGEST, + .cra_blocksize = SHA1_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct crypt_s390_sha1_ctx), + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(alg.cra_list), + .cra_u = { .digest = { + .dia_digestsize = SHA1_DIGEST_SIZE, + .dia_init = sha1_init, + .dia_update = sha1_update, + .dia_final = sha1_final } } +}; + +static int +init(void) +{ + int ret = -ENOSYS; + + if (crypt_s390_func_available(KIMD_SHA_1)){ + ret = crypto_register_alg(&alg); + if (ret == 0){ + printk(KERN_INFO "crypt_s390: sha1_s390 loaded.\n"); + } + } + return ret; +} + +static void __exit +fini(void) +{ + crypto_unregister_alg(&alg); +} + +module_init(init); +module_exit(fini); + +MODULE_ALIAS("sha1"); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm"); diff -urpN linux-2.6/arch/s390/crypto/sha1_z990.c linux-2.6-patched/arch/s390/crypto/sha1_z990.c --- linux-2.6/arch/s390/crypto/sha1_z990.c 2005-10-28 02:02:08.000000000 +0200 +++ linux-2.6-patched/arch/s390/crypto/sha1_z990.c 2005-12-09 14:24:26.000000000 +0100 @@ -1,167 +0,0 @@ -/* - * Cryptographic API. - * - * z990 implementation of the SHA1 Secure Hash Algorithm. - * - * Derived from cryptoapi implementation, adapted for in-place - * scatterlist interface. Originally based on the public domain - * implementation written by Steve Reid. - * - * s390 Version: - * Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation - * Author(s): Thomas Spatzier (tspat@de.ibm.com) - * - * Derived from "crypto/sha1.c" - * Copyright (c) Alan Smithee. - * Copyright (c) Andrew McDonald - * Copyright (c) Jean-Francois Dive - * - * 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. - * - */ -#include -#include -#include -#include -#include -#include -#include "crypt_z990.h" - -#define SHA1_DIGEST_SIZE 20 -#define SHA1_BLOCK_SIZE 64 - -struct crypt_z990_sha1_ctx { - u64 count; - u32 state[5]; - u32 buf_len; - u8 buffer[2 * SHA1_BLOCK_SIZE]; -}; - -static void -sha1_init(void *ctx) -{ - static const struct crypt_z990_sha1_ctx initstate = { - .state = { - 0x67452301, - 0xEFCDAB89, - 0x98BADCFE, - 0x10325476, - 0xC3D2E1F0 - }, - }; - memcpy(ctx, &initstate, sizeof(initstate)); -} - -static void -sha1_update(void *ctx, const u8 *data, unsigned int len) -{ - struct crypt_z990_sha1_ctx *sctx; - long imd_len; - - sctx = ctx; - sctx->count += len * 8; //message bit length - - //anything in buffer yet? -> must be completed - if (sctx->buf_len && (sctx->buf_len + len) >= SHA1_BLOCK_SIZE) { - //complete full block and hash - memcpy(sctx->buffer + sctx->buf_len, data, - SHA1_BLOCK_SIZE - sctx->buf_len); - crypt_z990_kimd(KIMD_SHA_1, sctx->state, sctx->buffer, - SHA1_BLOCK_SIZE); - data += SHA1_BLOCK_SIZE - sctx->buf_len; - len -= SHA1_BLOCK_SIZE - sctx->buf_len; - sctx->buf_len = 0; - } - - //rest of data contains full blocks? - imd_len = len & ~0x3ful; - if (imd_len){ - crypt_z990_kimd(KIMD_SHA_1, sctx->state, data, imd_len); - data += imd_len; - len -= imd_len; - } - //anything left? store in buffer - if (len){ - memcpy(sctx->buffer + sctx->buf_len , data, len); - sctx->buf_len += len; - } -} - - -static void -pad_message(struct crypt_z990_sha1_ctx* sctx) -{ - int index; - - index = sctx->buf_len; - sctx->buf_len = (sctx->buf_len < 56)? - SHA1_BLOCK_SIZE:2 * SHA1_BLOCK_SIZE; - //start pad with 1 - sctx->buffer[index] = 0x80; - //pad with zeros - index++; - memset(sctx->buffer + index, 0x00, sctx->buf_len - index); - //append length - memcpy(sctx->buffer + sctx->buf_len - 8, &sctx->count, - sizeof sctx->count); -} - -/* Add padding and return the message digest. */ -static void -sha1_final(void* ctx, u8 *out) -{ - struct crypt_z990_sha1_ctx *sctx = ctx; - - //must perform manual padding - pad_message(sctx); - crypt_z990_kimd(KIMD_SHA_1, sctx->state, sctx->buffer, sctx->buf_len); - //copy digest to out - memcpy(out, sctx->state, SHA1_DIGEST_SIZE); - /* Wipe context */ - memset(sctx, 0, sizeof *sctx); -} - -static struct crypto_alg alg = { - .cra_name = "sha1", - .cra_flags = CRYPTO_ALG_TYPE_DIGEST, - .cra_blocksize = SHA1_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct crypt_z990_sha1_ctx), - .cra_module = THIS_MODULE, - .cra_list = LIST_HEAD_INIT(alg.cra_list), - .cra_u = { .digest = { - .dia_digestsize = SHA1_DIGEST_SIZE, - .dia_init = sha1_init, - .dia_update = sha1_update, - .dia_final = sha1_final } } -}; - -static int -init(void) -{ - int ret = -ENOSYS; - - if (crypt_z990_func_available(KIMD_SHA_1)){ - ret = crypto_register_alg(&alg); - if (ret == 0){ - printk(KERN_INFO "crypt_z990: sha1_z990 loaded.\n"); - } - } - return ret; -} - -static void __exit -fini(void) -{ - crypto_unregister_alg(&alg); -} - -module_init(init); -module_exit(fini); - -MODULE_ALIAS("sha1"); - -MODULE_LICENSE("GPL"); -MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm"); diff -urpN linux-2.6/arch/s390/defconfig linux-2.6-patched/arch/s390/defconfig --- linux-2.6/arch/s390/defconfig 2005-12-09 14:24:19.000000000 +0100 +++ linux-2.6-patched/arch/s390/defconfig 2005-12-09 14:25:05.000000000 +0100 @@ -632,13 +632,13 @@ CONFIG_CRYPTO=y # CONFIG_CRYPTO_MD4 is not set # CONFIG_CRYPTO_MD5 is not set # CONFIG_CRYPTO_SHA1 is not set -# CONFIG_CRYPTO_SHA1_Z990 is not set +# CONFIG_CRYPTO_SHA1_S390 is not set # CONFIG_CRYPTO_SHA256 is not set # CONFIG_CRYPTO_SHA512 is not set # CONFIG_CRYPTO_WP512 is not set # CONFIG_CRYPTO_TGR192 is not set # CONFIG_CRYPTO_DES is not set -# CONFIG_CRYPTO_DES_Z990 is not set +# CONFIG_CRYPTO_DES_S390 is not set # CONFIG_CRYPTO_BLOWFISH is not set # CONFIG_CRYPTO_TWOFISH is not set # CONFIG_CRYPTO_SERPENT is not set diff -urpN linux-2.6/crypto/Kconfig linux-2.6-patched/crypto/Kconfig --- linux-2.6/crypto/Kconfig 2005-10-28 02:02:08.000000000 +0200 +++ linux-2.6-patched/crypto/Kconfig 2005-12-09 14:24:26.000000000 +0100 @@ -40,8 +40,8 @@ config CRYPTO_SHA1 help SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2). -config CRYPTO_SHA1_Z990 - tristate "SHA1 digest algorithm for IBM zSeries z990" +config CRYPTO_SHA1_S390 + tristate "SHA1 digest algorithm (s390)" depends on CRYPTO && ARCH_S390 help SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2). @@ -98,8 +98,8 @@ config CRYPTO_DES help DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3). -config CRYPTO_DES_Z990 - tristate "DES and Triple DES cipher algorithms for IBM zSeries z990" +config CRYPTO_DES_S390 + tristate "DES and Triple DES cipher algorithms (s390)" depends on CRYPTO && ARCH_S390 help DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3). - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/