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target: Use scsi helpers to build the sense data correctly

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Instead of open coding the sense buffer construction, use
scsi scsi_build_sense_buffer() and scsi_set_sense_information()
helpers which moved to scsi_common.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Sagi Grimberg 2015-07-08 17:58:53 +03:00 committed by Nicholas Bellinger
parent 7708c16565
commit 9ec1e1ce3a
2 changed files with 9 additions and 43 deletions
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31
drivers/target/target_core_spc.c
View File

@ -1157,32 +1157,11 @@ static sense_reason_t spc_emulate_request_sense(struct se_cmd *cmd)
if (!rbuf)
return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE;
if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) {
/*
* CURRENT ERROR, UNIT ATTENTION
*/
buf[0] = 0x70;
buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION;
/*
* The Additional Sense Code (ASC) from the UNIT ATTENTION
*/
buf[SPC_ASC_KEY_OFFSET] = ua_asc;
buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq;
buf[7] = 0x0A;
} else {
/*
* CURRENT ERROR, NO SENSE
*/
buf[0] = 0x70;
buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE;
/*
* NO ADDITIONAL SENSE INFORMATION
*/
buf[SPC_ASC_KEY_OFFSET] = 0x00;
buf[7] = 0x0A;
}
if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq))
scsi_build_sense_buffer(0, buf, UNIT_ATTENTION,
ua_asc, ua_ascq);
else
scsi_build_sense_buffer(0, buf, NO_SENSE, 0x0, 0x0);
memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length));
transport_kunmap_data_sg(cmd);

21
drivers/target/target_core_transport.c
View File

@ -39,6 +39,7 @@
#include <net/sock.h>
#include <net/tcp.h>
#include <scsi/scsi_proto.h>
#include <scsi/scsi_common.h>
#include <target/target_core_base.h>
#include <target/target_core_backend.h>
@ -2615,19 +2616,6 @@ bool transport_wait_for_tasks(struct se_cmd *cmd)
}
EXPORT_SYMBOL(transport_wait_for_tasks);
static
void transport_err_sector_info(unsigned char *buffer, sector_t bad_sector)
{
/* Place failed LBA in sense data information descriptor 0. */
buffer[SPC_ADD_SENSE_LEN_OFFSET] = 0xc;
buffer[SPC_DESC_TYPE_OFFSET] = 0; /* Information */
buffer[SPC_ADDITIONAL_DESC_LEN_OFFSET] = 0xa;
buffer[SPC_VALIDITY_OFFSET] = 0x80;
/* Descriptor Information: failing sector */
put_unaligned_be64(bad_sector, &buffer[12]);
}
struct sense_info {
u8 key;
u8 asc;
@ -2754,7 +2742,6 @@ static void translate_sense_reason(struct se_cmd *cmd, sense_reason_t reason)
si = &sense_info_table[(__force int)
TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE];
buffer[SPC_SENSE_KEY_OFFSET] = si->key;
if (reason == TCM_CHECK_CONDITION_UNIT_ATTENTION) {
core_scsi3_ua_for_check_condition(cmd, &asc, &ascq);
WARN_ON_ONCE(asc == 0);
@ -2766,10 +2753,10 @@ static void translate_sense_reason(struct se_cmd *cmd, sense_reason_t reason)
asc = si->asc;
ascq = si->ascq;
}
buffer[SPC_ASC_KEY_OFFSET] = asc;
buffer[SPC_ASCQ_KEY_OFFSET] = ascq;
scsi_build_sense_buffer(0, buffer, si->key, asc, ascq);
if (si->add_sector_info)
transport_err_sector_info(cmd->sense_buffer, cmd->bad_sector);
scsi_set_sense_information(buffer, cmd->bad_sector);
}
int