cregit-Linux how code gets into the kernel

Release 4.11 drivers/s390/crypto/zcrypt_msgtype6.h

/*
 *  zcrypt 2.1.0
 *
 *  Copyright IBM Corp. 2001, 2012
 *  Author(s): Robert Burroughs
 *             Eric Rossman (edrossma@us.ibm.com)
 *
 *  Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com)
 *  Major cleanup & driver split: Martin Schwidefsky <schwidefsky@de.ibm.com>
 *  MSGTYPE restruct:             Holger Dengler <hd@linux.vnet.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, or (at your option)
 * any later version.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef _ZCRYPT_MSGTYPE6_H_

#define _ZCRYPT_MSGTYPE6_H_

#include <asm/zcrypt.h>


#define MSGTYPE06_NAME			"zcrypt_msgtype6"

#define MSGTYPE06_VARIANT_DEFAULT	0

#define MSGTYPE06_VARIANT_NORNG		1

#define MSGTYPE06_VARIANT_EP11		2


#define MSGTYPE06_MAX_MSG_SIZE		(12*1024)

/**
 * The type 6 message family is associated with PCICC or PCIXCC cards.
 *
 * It contains a message header followed by a CPRB, both of which
 * are described below.
 *
 * Note that all reserved fields must be zeroes.
 */

struct type6_hdr {
	
unsigned char reserved1;	/* 0x00                         */
	
unsigned char type;		/* 0x06                         */
	
unsigned char reserved2[2];	/* 0x0000                       */
	
unsigned char right[4];		/* 0x00000000                   */
	
unsigned char reserved3[2];	/* 0x0000                       */
	
unsigned char reserved4[2];	/* 0x0000                       */
	
unsigned char apfs[4];		/* 0x00000000                   */
	
unsigned int  offset1;		/* 0x00000058 (offset to CPRB)  */
	
unsigned int  offset2;		/* 0x00000000                   */
	
unsigned int  offset3;		/* 0x00000000                   */
	
unsigned int  offset4;		/* 0x00000000                   */
	
unsigned char agent_id[16];	/* PCICC:                       */
					/*    0x0100                    */
					/*    0x4343412d4150504c202020  */
					/*    0x010101                  */
					/* PCIXCC:                      */
					/*    0x4341000000000000        */
					/*    0x0000000000000000        */
	
unsigned char rqid[2];		/* rqid.  internal to 603       */
	
unsigned char reserved5[2];	/* 0x0000                       */
	
unsigned char function_code[2];	/* for PKD, 0x5044 (ascii 'PD') */
	
unsigned char reserved6[2];	/* 0x0000                       */
	
unsigned int  ToCardLen1;	/* (request CPRB len + 3) & -4  */
	
unsigned int  ToCardLen2;	/* db len 0x00000000 for PKD    */
	
unsigned int  ToCardLen3;	/* 0x00000000                   */
	
unsigned int  ToCardLen4;	/* 0x00000000                   */
	
unsigned int  FromCardLen1;	/* response buffer length       */
	
unsigned int  FromCardLen2;	/* db len 0x00000000 for PKD    */
	
unsigned int  FromCardLen3;	/* 0x00000000                   */
	
unsigned int  FromCardLen4;	/* 0x00000000                   */
} 
__packed;

/**
 * The type 86 message family is associated with PCICC and PCIXCC cards.
 *
 * It contains a message header followed by a CPRB.  The CPRB is
 * the same as the request CPRB, which is described above.
 *
 * If format is 1, an error condition exists and no data beyond
 * the 8-byte message header is of interest.
 *
 * The non-error message is shown below.
 *
 * Note that all reserved fields must be zeroes.
 */

struct type86_hdr {
	
unsigned char reserved1;	/* 0x00                         */
	
unsigned char type;		/* 0x86                         */
	
unsigned char format;		/* 0x01 (error) or 0x02 (ok)    */
	
unsigned char reserved2;	/* 0x00                         */
	
unsigned char reply_code;	/* reply code (see above)       */
	
unsigned char reserved3[3];	/* 0x000000                     */
} 
__packed;


#define TYPE86_RSP_CODE 0x86

#define TYPE87_RSP_CODE 0x87

#define TYPE86_FMT2	0x02


struct type86_fmt2_ext {
	
unsigned char	  reserved[4];	/* 0x00000000                   */
	
unsigned char	  apfs[4];	/* final status                 */
	
unsigned int	  count1;	/* length of CPRB + parameters  */
	
unsigned int	  offset1;	/* offset to CPRB               */
	
unsigned int	  count2;	/* 0x00000000                   */
	
unsigned int	  offset2;	/* db offset 0x00000000 for PKD */
	
unsigned int	  count3;	/* 0x00000000                   */
	
unsigned int	  offset3;	/* 0x00000000                   */
	
unsigned int	  count4;	/* 0x00000000                   */
	
unsigned int	  offset4;	/* 0x00000000                   */
} 
__packed;

unsigned int get_cprb_fc(struct ica_xcRB *, struct ap_message *,
			 unsigned int *, unsigned short **);
unsigned int get_ep11cprb_fc(struct ep11_urb *, struct ap_message *,
			     unsigned int *);
unsigned int get_rng_fc(struct ap_message *, int *, unsigned int *);


#define LOW	10

#define MEDIUM	100

#define HIGH	500

int speed_idx_cca(int);
int speed_idx_ep11(int);

/**
 * Prepare a type6 CPRB message for random number generation
 *
 * @ap_dev: AP device pointer
 * @ap_msg: pointer to AP message
 */

static inline void rng_type6CPRB_msgX(struct ap_message *ap_msg, unsigned int random_number_length, unsigned int *domain) { struct { struct type6_hdr hdr; struct CPRBX cprbx; char function_code[2]; short int rule_length; char rule[8]; short int verb_length; short int key_length; } __packed * msg = ap_msg->message; static struct type6_hdr static_type6_hdrX = { .type = 0x06, .offset1 = 0x00000058, .agent_id = {'C', 'A'}, .function_code = {'R', 'L'}, .ToCardLen1 = sizeof(*msg) - sizeof(msg->hdr), .FromCardLen1 = sizeof(*msg) - sizeof(msg->hdr), }; static struct CPRBX local_cprbx = { .cprb_len = 0x00dc, .cprb_ver_id = 0x02, .func_id = {0x54, 0x32}, .req_parml = sizeof(*msg) - sizeof(msg->hdr) - sizeof(msg->cprbx), .rpl_msgbl = sizeof(*msg) - sizeof(msg->hdr), }; msg->hdr = static_type6_hdrX; msg->hdr.FromCardLen2 = random_number_length, msg->cprbx = local_cprbx; msg->cprbx.rpl_datal = random_number_length, memcpy(msg->function_code, msg->hdr.function_code, 0x02); msg->rule_length = 0x0a; memcpy(msg->rule, "RANDOM ", 8); msg->verb_length = 0x02; msg->key_length = 0x02; ap_msg->length = sizeof(*msg); *domain = (unsigned short)msg->cprbx.domain; }

Contributors

PersonTokensPropCommitsCommitProp
Holger Dengler27293.47%133.33%
Ingo Tuchscherer196.53%266.67%
Total291100.00%3100.00%

void zcrypt_msgtype6_init(void); void zcrypt_msgtype6_exit(void); #endif /* _ZCRYPT_MSGTYPE6_H_ */

Overall Contributors

PersonTokensPropCommitsCommitProp
Holger Dengler58684.56%120.00%
Ingo Tuchscherer10715.44%480.00%
Total693100.00%5100.00%
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