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Name	Size	Permission	Date
fc	[ DIR ]	drwxr-xr-x	2026-07-17 06:29
fc_frame.h	7.03 KB	-rw-r--r--	2024-03-10 20:38
fcoe_sysfs.h	3.15 KB	-rw-r--r--	2024-03-10 20:38
iscsi_if.h	25.6 KB	-rw-r--r--	2024-03-10 20:38
iscsi_proto.h	15.54 KB	-rw-r--r--	2024-03-10 20:38
iser.h	2.34 KB	-rw-r--r--	2024-03-10 20:38
libfc.h	31.09 KB	-rw-r--r--	2024-03-10 20:38
libfcoe.h	13.39 KB	-rw-r--r--	2024-03-10 20:38
libiscsi.h	14.59 KB	-rw-r--r--	2024-03-10 20:38
libiscsi_tcp.h	3.8 KB	-rw-r--r--	2024-03-10 20:38
libsas.h	18.42 KB	-rw-r--r--	2024-03-10 20:38
sas.h	12.79 KB	-rw-r--r--	2024-03-10 20:38
sas_ata.h	3.09 KB	-rw-r--r--	2024-03-10 20:38
scsi.h	5.89 KB	-rw-r--r--	2024-03-10 20:38
scsi_bsg_iscsi.h	2.16 KB	-rw-r--r--	2024-03-10 20:38
scsi_cmnd.h	10.39 KB	-rw-r--r--	2026-07-01 19:48
scsi_common.h	2.68 KB	-rw-r--r--	2024-03-10 20:38
scsi_dbg.h	2.08 KB	-rw-r--r--	2024-03-10 20:38
scsi_device.h	22.33 KB	-rw-r--r--	2024-03-10 20:38
scsi_devinfo.h	3.78 KB	-rw-r--r--	2024-03-10 20:38
scsi_dh.h	2.54 KB	-rw-r--r--	2024-03-10 20:38
scsi_driver.h	1.09 KB	-rw-r--r--	2026-07-01 19:48
scsi_eh.h	1.73 KB	-rw-r--r--	2026-07-01 19:48
scsi_host.h	27.1 KB	-rw-r--r--	2026-07-01 19:48
scsi_ioctl.h	1.51 KB	-rw-r--r--	2024-03-10 20:38
scsi_proto.h	11.03 KB	-rw-r--r--	2024-03-10 20:38
scsi_status.h	2.64 KB	-rw-r--r--	2024-03-10 20:38
scsi_tcq.h	993 B	-rw-r--r--	2024-03-10 20:38
scsi_transport.h	2.55 KB	-rw-r--r--	2024-03-10 20:38
scsi_transport_fc.h	28.11 KB	-rw-r--r--	2024-03-10 20:38
scsi_transport_iscsi.h	17.44 KB	-rw-r--r--	2024-03-10 20:38
scsi_transport_sas.h	6.88 KB	-rw-r--r--	2026-07-01 19:48
scsi_transport_spi.h	6.53 KB	-rw-r--r--	2024-03-10 20:38
scsi_transport_srp.h	4.77 KB	-rw-r--r--	2024-03-10 20:38
scsicam.h	636 B	-rw-r--r--	2024-03-10 20:38
sg.h	14.75 KB	-rw-r--r--	2024-03-10 20:38
srp.h	6.86 KB	-rw-r--r--	2024-03-10 20:38
viosrp.h	5.48 KB	-rw-r--r--	2024-03-10 20:38

Rename

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Functions used by both the SCSI initiator code and the SCSI target code.
 */

#ifndef _SCSI_COMMON_H_
#define _SCSI_COMMON_H_

#include <linux/types.h>
#include <uapi/linux/pr.h>
#include <scsi/scsi_proto.h>

enum scsi_pr_type {
	SCSI_PR_WRITE_EXCLUSIVE			= 0x01,
	SCSI_PR_EXCLUSIVE_ACCESS		= 0x03,
	SCSI_PR_WRITE_EXCLUSIVE_REG_ONLY	= 0x05,
	SCSI_PR_EXCLUSIVE_ACCESS_REG_ONLY	= 0x06,
	SCSI_PR_WRITE_EXCLUSIVE_ALL_REGS	= 0x07,
	SCSI_PR_EXCLUSIVE_ACCESS_ALL_REGS	= 0x08,
};

enum scsi_pr_type block_pr_type_to_scsi(enum pr_type type);
enum pr_type scsi_pr_type_to_block(enum scsi_pr_type type);

static inline unsigned
scsi_varlen_cdb_length(const void *hdr)
{
	return ((struct scsi_varlen_cdb_hdr *)hdr)->additional_cdb_length + 8;
}

extern const unsigned char scsi_command_size_tbl[8];
#define COMMAND_SIZE(opcode) scsi_command_size_tbl[((opcode) >> 5) & 7]

static inline unsigned
scsi_command_size(const unsigned char *cmnd)
{
	return (cmnd[0] == VARIABLE_LENGTH_CMD) ?
		scsi_varlen_cdb_length(cmnd) : COMMAND_SIZE(cmnd[0]);
}

static inline unsigned char
scsi_command_control(const unsigned char *cmnd)
{
	return (cmnd[0] == VARIABLE_LENGTH_CMD) ?
		cmnd[1] : cmnd[COMMAND_SIZE(cmnd[0]) - 1];
}

/* Returns a human-readable name for the device */
extern const char *scsi_device_type(unsigned type);

extern void int_to_scsilun(u64, struct scsi_lun *);
extern u64 scsilun_to_int(struct scsi_lun *);

/*
 * This is a slightly modified SCSI sense "descriptor" format header.
 * The addition is to allow the 0x70 and 0x71 response codes. The idea
 * is to place the salient data from either "fixed" or "descriptor" sense
 * format into one structure to ease application processing.
 *
 * The original sense buffer should be kept around for those cases
 * in which more information is required (e.g. the LBA of a MEDIUM ERROR).
 */
struct scsi_sense_hdr {		/* See SPC-3 section 4.5 */
	u8 response_code;	/* permit: 0x0, 0x70, 0x71, 0x72, 0x73 */
	u8 sense_key;
	u8 asc;
	u8 ascq;
	u8 byte4;
	u8 byte5;
	u8 byte6;
	u8 additional_length;	/* always 0 for fixed sense format */
};

static inline bool scsi_sense_valid(const struct scsi_sense_hdr *sshdr)
{
	if (!sshdr)
		return false;

return (sshdr->response_code & 0x70) == 0x70;
}

extern bool scsi_normalize_sense(const u8 *sense_buffer, int sb_len,
				 struct scsi_sense_hdr *sshdr);

extern void scsi_build_sense_buffer(int desc, u8 *buf, u8 key, u8 asc, u8 ascq);
int scsi_set_sense_information(u8 *buf, int buf_len, u64 info);
int scsi_set_sense_field_pointer(u8 *buf, int buf_len, u16 fp, u8 bp, bool cd);
extern const u8 * scsi_sense_desc_find(const u8 * sense_buffer, int sb_len,
				       int desc_type);

#endif /* _SCSI_COMMON_H_ */