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Release 4.12 include/scsi/scsi_common.h

Directory: include/scsi
 * 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 <scsi/scsi_proto.h>

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


Bart Van Assche26100.00%1100.00%

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]); }


Bart Van Assche36100.00%1100.00%

/* 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; }


Bart Van Assche32100.00%1100.00%

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_ */

Overall Contributors

Bart Van Assche20874.02%125.00%
Sagi Grimberg5318.86%250.00%
Hannes Reinecke207.12%125.00%
Directory: include/scsi
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