| Message ID | 20220812010027.8251-2-michael.christie@oracle.com |
|---|---|
| State | New |
| Headers | show |
| Series | scsi: Fix internal host code use | expand |
On 12.08.22 03:00, Mike Christie wrote: > The error codes: > > DID_TARGET_FAILURE > DID_NEXUS_FAILURE > DID_ALLOC_FAILURE > DID_MEDIUM_ERROR > > are internal to the SCSI layer. Drivers must not use them because: > > 1. They are not propagated upwards, so SG IO/passthrough users will not > see an error and think a command was successful. > > xen-scsiback will never see this error and should not try to send it. > > 2. There is no handling for them in scsi_decide_disposition so if > xen-scsifront were to return the error to scsi-ml then it kicks off the > error handler which is definitely not what we want. > > This patch remove the use from xen-scsifront/back. > > Signed-off-by: Mike Christie <michael.christie@oracle.com> Reviewed-by: Juergen Gross <jgross@suse.com> Juergen
diff --git a/drivers/scsi/xen-scsifront.c b/drivers/scsi/xen-scsifront.c index 51afc66e839d..66b316d173b0 100644 --- a/drivers/scsi/xen-scsifront.c +++ b/drivers/scsi/xen-scsifront.c @@ -289,14 +289,6 @@ static unsigned int scsifront_host_byte(int32_t rslt) return DID_TRANSPORT_DISRUPTED; case XEN_VSCSIIF_RSLT_HOST_TRANSPORT_FAILFAST: return DID_TRANSPORT_FAILFAST; - case XEN_VSCSIIF_RSLT_HOST_TARGET_FAILURE: - return DID_TARGET_FAILURE; - case XEN_VSCSIIF_RSLT_HOST_NEXUS_FAILURE: - return DID_NEXUS_FAILURE; - case XEN_VSCSIIF_RSLT_HOST_ALLOC_FAILURE: - return DID_ALLOC_FAILURE; - case XEN_VSCSIIF_RSLT_HOST_MEDIUM_ERROR: - return DID_MEDIUM_ERROR; case XEN_VSCSIIF_RSLT_HOST_TRANSPORT_MARGINAL: return DID_TRANSPORT_MARGINAL; default: diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index 7a0c93acc2c5..e98c88a960d8 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -333,18 +333,6 @@ static int32_t scsiback_result(int32_t result) case DID_TRANSPORT_FAILFAST: host_status = XEN_VSCSIIF_RSLT_HOST_TRANSPORT_FAILFAST; break; - case DID_TARGET_FAILURE: - host_status = XEN_VSCSIIF_RSLT_HOST_TARGET_FAILURE; - break; - case DID_NEXUS_FAILURE: - host_status = XEN_VSCSIIF_RSLT_HOST_NEXUS_FAILURE; - break; - case DID_ALLOC_FAILURE: - host_status = XEN_VSCSIIF_RSLT_HOST_ALLOC_FAILURE; - break; - case DID_MEDIUM_ERROR: - host_status = XEN_VSCSIIF_RSLT_HOST_MEDIUM_ERROR; - break; case DID_TRANSPORT_MARGINAL: host_status = XEN_VSCSIIF_RSLT_HOST_TRANSPORT_MARGINAL; break;
The error codes: DID_TARGET_FAILURE DID_NEXUS_FAILURE DID_ALLOC_FAILURE DID_MEDIUM_ERROR are internal to the SCSI layer. Drivers must not use them because: 1. They are not propagated upwards, so SG IO/passthrough users will not see an error and think a command was successful. xen-scsiback will never see this error and should not try to send it. 2. There is no handling for them in scsi_decide_disposition so if xen-scsifront were to return the error to scsi-ml then it kicks off the error handler which is definitely not what we want. This patch remove the use from xen-scsifront/back. Signed-off-by: Mike Christie <michael.christie@oracle.com> --- drivers/scsi/xen-scsifront.c | 8 -------- drivers/xen/xen-scsiback.c | 12 ------------ 2 files changed, 20 deletions(-)