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target: Set additional sense length field in sense data 

The target code was not setting the additional sense length field in the
sense data it returned, which meant that at least the Linux stack
ignored the ASC/ASCQ fields.  For example, without this patch, on a
tcm_loop device:

    # sg_raw -v /dev/sda 2 0 0 0 0 0

gives

        cdb to send: 02 00 00 00 00 00
    SCSI Status: Check Condition

    Sense Information:
     Fixed format, current;  Sense key: Illegal Request
      Raw sense data (in hex):
            70 00 05 00 00 00 00 00

while after the patch we correctly get the following (which matches what
a regular disk returns):

        cdb to send: 02 00 00 00 00 00
    SCSI Status: Check Condition

    Sense Information:
     Fixed format, current;  Sense key: Illegal Request
     Additional sense: Invalid command operation code
     Raw sense data (in hex):
            70 00 05 00 00 00 00 0a  00 00 00 00 20 00 00 00
            00 00

Signed-off-by: Roland Dreier <roland@purestorage.com>
Cc: stable@kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
This commit is contained in:
Roland Dreier 2011-12-13 14:55:33 -08:00 committed by Nicholas Bellinger
parent 6d5b597560
commit 895f302252
2 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
drivers/target/target_core_transport.c
View File

@ -4398,6 +4398,7 @@ int transport_send_check_condition_and_sense(
case TCM_NON_EXISTENT_LUN:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ILLEGAL REQUEST */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
/* LOGICAL UNIT NOT SUPPORTED */
@ -4407,6 +4408,7 @@ int transport_send_check_condition_and_sense(
case TCM_SECTOR_COUNT_TOO_MANY:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ILLEGAL REQUEST */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
/* INVALID COMMAND OPERATION CODE */
@ -4415,6 +4417,7 @@ int transport_send_check_condition_and_sense(
case TCM_UNKNOWN_MODE_PAGE:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ILLEGAL REQUEST */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
/* INVALID FIELD IN CDB */
@ -4423,6 +4426,7 @@ int transport_send_check_condition_and_sense(
case TCM_CHECK_CONDITION_ABORT_CMD:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ABORTED COMMAND */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
/* BUS DEVICE RESET FUNCTION OCCURRED */
@ -4432,6 +4436,7 @@ int transport_send_check_condition_and_sense(
case TCM_INCORRECT_AMOUNT_OF_DATA:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ABORTED COMMAND */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
/* WRITE ERROR */
@ -4442,6 +4447,7 @@ int transport_send_check_condition_and_sense(
case TCM_INVALID_CDB_FIELD:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ABORTED COMMAND */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
/* INVALID FIELD IN CDB */
@ -4450,6 +4456,7 @@ int transport_send_check_condition_and_sense(
case TCM_INVALID_PARAMETER_LIST:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ABORTED COMMAND */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
/* INVALID FIELD IN PARAMETER LIST */
@ -4458,6 +4465,7 @@ int transport_send_check_condition_and_sense(
case TCM_UNEXPECTED_UNSOLICITED_DATA:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ABORTED COMMAND */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
/* WRITE ERROR */
@ -4468,6 +4476,7 @@ int transport_send_check_condition_and_sense(
case TCM_SERVICE_CRC_ERROR:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ABORTED COMMAND */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
/* PROTOCOL SERVICE CRC ERROR */
@ -4478,6 +4487,7 @@ int transport_send_check_condition_and_sense(
case TCM_SNACK_REJECTED:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ABORTED COMMAND */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ABORTED_COMMAND;
/* READ ERROR */
@ -4488,6 +4498,7 @@ int transport_send_check_condition_and_sense(
case TCM_WRITE_PROTECTED:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* DATA PROTECT */
buffer[offset+SPC_SENSE_KEY_OFFSET] = DATA_PROTECT;
/* WRITE PROTECTED */
@ -4496,6 +4507,7 @@ int transport_send_check_condition_and_sense(
case TCM_CHECK_CONDITION_UNIT_ATTENTION:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* UNIT ATTENTION */
buffer[offset+SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION;
core_scsi3_ua_for_check_condition(cmd, &asc, &ascq);
@ -4505,6 +4517,7 @@ int transport_send_check_condition_and_sense(
case TCM_CHECK_CONDITION_NOT_READY:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* Not Ready */
buffer[offset+SPC_SENSE_KEY_OFFSET] = NOT_READY;
transport_get_sense_codes(cmd, &asc, &ascq);
@ -4515,6 +4528,7 @@ int transport_send_check_condition_and_sense(
default:
/* CURRENT ERROR */
buffer[offset] = 0x70;
buffer[offset+SPC_ADD_SENSE_LEN_OFFSET] = 10;
/* ILLEGAL REQUEST */
buffer[offset+SPC_SENSE_KEY_OFFSET] = ILLEGAL_REQUEST;
/* LOGICAL UNIT COMMUNICATION FAILURE */

1
include/target/target_core_base.h
View File

@ -35,6 +35,7 @@
#define TRANSPORT_SENSE_BUFFER SCSI_SENSE_BUFFERSIZE
/* Used by transport_send_check_condition_and_sense() */
#define SPC_SENSE_KEY_OFFSET 2
#define SPC_ADD_SENSE_LEN_OFFSET 7
#define SPC_ASC_KEY_OFFSET 12
#define SPC_ASCQ_KEY_OFFSET 13
#define TRANSPORT_IQN_LEN 224