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| author |   John Garry <john.garry@huawei.com> | 2022-02-17 23:42:30 +0800 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2022-02-19 15:59:34 -0500 |
| commit | 1d6049a3b14feb39c8d6c8f538a711dcc54f88e0 (patch) | |
| tree | 150d6a2eb568f740a033b3405d6f46f8e721be9f /include/scsi | |
| parent | scsi: libsas: Handle non-TMF codes in sas_scsi_find_task() (diff) | |
| download | linux-dev-1d6049a3b14feb39c8d6c8f538a711dcc54f88e0.tar.xz linux-dev-1d6049a3b14feb39c8d6c8f538a711dcc54f88e0.zip | |
scsi: libsas: Use enum for response frame DATAPRES field
As defined in table 126 of the SAS spec 1.1, use an enum for the DATAPRES
field, which makes reading the code easier.
Also change sas_ssp_task_response() to use a switch statement, which is
more suitable (than if-else), as suggested by Christoph.
Link: https://lore.kernel.org/r/1645112566-115804-3-git-send-email-john.garry@huawei.com
Suggested-by: Xiang Chen <chenxiang66@hisilicon.com>
Tested-by: Yihang Li <liyihang6@hisilicon.com>
Tested-by: Damien Le Moal <damien.lemoal@opensource.wdc.com>
Reviewed-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: John Garry <john.garry@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/sas.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/scsi/sas.h b/include/scsi/sas.h index 64154c1fed02..332a463d08ef 100644 --- a/include/scsi/sas.h +++ b/include/scsi/sas.h @@ -191,6 +191,13 @@ enum sas_gpio_reg_type { SAS_GPIO_REG_TX_GP = 4, }; +/* Response frame DATAPRES field */ +enum { + SAS_DATAPRES_NO_DATA = 0, + SAS_DATAPRES_RESPONSE_DATA = 1, + SAS_DATAPRES_SENSE_DATA = 2, +}; + struct dev_to_host_fis { u8 fis_type; /* 0x34 */ u8 flags; |