drivers/s390/crypto/zcrypt_msgtype50.c

Source file repositories/reference/linux-study-clean/drivers/s390/crypto/zcrypt_msgtype50.c

File Facts

System
Linux kernel
Corpus path
drivers/s390/crypto/zcrypt_msgtype50.c
Extension
.c
Size
16461 bytes
Lines
563
Domain
Driver Families
Bucket
drivers/s390
Inferred role
Driver Families: implementation source
Status
source implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

Dependency Surface

Detected Declarations

Annotated Snippet

struct type50_hdr {
	unsigned char	reserved1;
	unsigned char	msg_type_code;	/* 0x50 */
	unsigned short	msg_len;
	unsigned char	reserved2;
	unsigned char	ignored;
	unsigned short	reserved3;
} __packed;

#define TYPE50_TYPE_CODE	0x50

#define TYPE50_MEB1_FMT		0x0001
#define TYPE50_MEB2_FMT		0x0002
#define TYPE50_MEB3_FMT		0x0003
#define TYPE50_CRB1_FMT		0x0011
#define TYPE50_CRB2_FMT		0x0012
#define TYPE50_CRB3_FMT		0x0013

/* Mod-Exp, with a small modulus */
struct type50_meb1_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0001 */
	unsigned char	reserved[6];
	unsigned char	exponent[128];
	unsigned char	modulus[128];
	unsigned char	message[128];
} __packed;

/* Mod-Exp, with a large modulus */
struct type50_meb2_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0002 */
	unsigned char	reserved[6];
	unsigned char	exponent[256];
	unsigned char	modulus[256];
	unsigned char	message[256];
} __packed;

/* Mod-Exp, with a larger modulus */
struct type50_meb3_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0003 */
	unsigned char	reserved[6];
	unsigned char	exponent[512];
	unsigned char	modulus[512];
	unsigned char	message[512];
} __packed;

/* CRT, with a small modulus */
struct type50_crb1_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0011 */
	unsigned char	reserved[6];
	unsigned char	p[64];
	unsigned char	q[64];
	unsigned char	dp[64];
	unsigned char	dq[64];
	unsigned char	u[64];
	unsigned char	message[128];
} __packed;

/* CRT, with a large modulus */
struct type50_crb2_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0012 */
	unsigned char	reserved[6];
	unsigned char	p[128];
	unsigned char	q[128];
	unsigned char	dp[128];
	unsigned char	dq[128];
	unsigned char	u[128];
	unsigned char	message[256];
} __packed;

/* CRT, with a larger modulus */
struct type50_crb3_msg {
	struct type50_hdr header;
	unsigned short	keyblock_type;	/* 0x0013 */
	unsigned char	reserved[6];
	unsigned char	p[256];
	unsigned char	q[256];
	unsigned char	dp[256];
	unsigned char	dq[256];
	unsigned char	u[256];
	unsigned char	message[512];
} __packed;

/*
 * The type 80 response family is associated with a CEXxA cards.
 *

Annotation

Implementation Notes