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path: root/drivers/scsi/storvsc_drv.c
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Diffstat (limited to 'drivers/scsi/storvsc_drv.c')
-rw-r--r--drivers/scsi/storvsc_drv.c119
1 files changed, 56 insertions, 63 deletions
diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c
index 403753929320..328bb961c281 100644
--- a/drivers/scsi/storvsc_drv.c
+++ b/drivers/scsi/storvsc_drv.c
@@ -1031,17 +1031,40 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb,
struct storvsc_scan_work *wrk;
void (*process_err_fn)(struct work_struct *work);
struct hv_host_device *host_dev = shost_priv(host);
- bool do_work = false;
- switch (SRB_STATUS(vm_srb->srb_status)) {
- case SRB_STATUS_ERROR:
+ /*
+ * In some situations, Hyper-V sets multiple bits in the
+ * srb_status, such as ABORTED and ERROR. So process them
+ * individually, with the most specific bits first.
+ */
+
+ if (vm_srb->srb_status & SRB_STATUS_INVALID_LUN) {
+ set_host_byte(scmnd, DID_NO_CONNECT);
+ process_err_fn = storvsc_remove_lun;
+ goto do_work;
+ }
+
+ if (vm_srb->srb_status & SRB_STATUS_ABORTED) {
+ if (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID &&
+ /* Capacity data has changed */
+ (asc == 0x2a) && (ascq == 0x9)) {
+ process_err_fn = storvsc_device_scan;
+ /*
+ * Retry the I/O that triggered this.
+ */
+ set_host_byte(scmnd, DID_REQUEUE);
+ goto do_work;
+ }
+ }
+
+ if (vm_srb->srb_status & SRB_STATUS_ERROR) {
/*
* Let upper layer deal with error when
* sense message is present.
*/
-
if (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID)
- break;
+ return;
+
/*
* If there is an error; offline the device since all
* error recovery strategies would have already been
@@ -1054,37 +1077,19 @@ static void storvsc_handle_error(struct vmscsi_request *vm_srb,
set_host_byte(scmnd, DID_PASSTHROUGH);
break;
/*
- * On Some Windows hosts TEST_UNIT_READY command can return
- * SRB_STATUS_ERROR, let the upper level code deal with it
- * based on the sense information.
+ * On some Hyper-V hosts TEST_UNIT_READY command can
+ * return SRB_STATUS_ERROR. Let the upper level code
+ * deal with it based on the sense information.
*/
case TEST_UNIT_READY:
break;
default:
set_host_byte(scmnd, DID_ERROR);
}
- break;
- case SRB_STATUS_INVALID_LUN:
- set_host_byte(scmnd, DID_NO_CONNECT);
- do_work = true;
- process_err_fn = storvsc_remove_lun;
- break;
- case SRB_STATUS_ABORTED:
- if (vm_srb->srb_status & SRB_STATUS_AUTOSENSE_VALID &&
- (asc == 0x2a) && (ascq == 0x9)) {
- do_work = true;
- process_err_fn = storvsc_device_scan;
- /*
- * Retry the I/O that triggered this.
- */
- set_host_byte(scmnd, DID_REQUEUE);
- }
- break;
}
+ return;
- if (!do_work)
- return;
-
+do_work:
/*
* We need to schedule work to process this error; schedule it.
*/
@@ -1112,6 +1117,7 @@ static void storvsc_command_completion(struct storvsc_cmd_request *cmd_request,
struct Scsi_Host *host;
u32 payload_sz = cmd_request->payload_sz;
void *payload = cmd_request->payload;
+ bool sense_ok;
host = stor_dev->host;
@@ -1121,11 +1127,10 @@ static void storvsc_command_completion(struct storvsc_cmd_request *cmd_request,
scmnd->result = vm_srb->scsi_status;
if (scmnd->result) {
- if (scsi_normalize_sense(scmnd->sense_buffer,
- SCSI_SENSE_BUFFERSIZE, &sense_hdr) &&
- !(sense_hdr.sense_key == NOT_READY &&
- sense_hdr.asc == 0x03A) &&
- do_logging(STORVSC_LOGGING_ERROR))
+ sense_ok = scsi_normalize_sense(scmnd->sense_buffer,
+ SCSI_SENSE_BUFFERSIZE, &sense_hdr);
+
+ if (sense_ok && do_logging(STORVSC_LOGGING_WARN))
scsi_print_sense_hdr(scmnd->device, "storvsc",
&sense_hdr);
}
@@ -1182,53 +1187,41 @@ static void storvsc_on_io_completion(struct storvsc_device *stor_device,
vstor_packet->vm_srb.srb_status = SRB_STATUS_SUCCESS;
}
-
/* Copy over the status...etc */
stor_pkt->vm_srb.scsi_status = vstor_packet->vm_srb.scsi_status;
stor_pkt->vm_srb.srb_status = vstor_packet->vm_srb.srb_status;
- /* Validate sense_info_length (from Hyper-V) */
- if (vstor_packet->vm_srb.sense_info_length > sense_buffer_size)
- vstor_packet->vm_srb.sense_info_length = sense_buffer_size;
-
- stor_pkt->vm_srb.sense_info_length =
- vstor_packet->vm_srb.sense_info_length;
+ /*
+ * Copy over the sense_info_length, but limit to the known max
+ * size if Hyper-V returns a bad value.
+ */
+ stor_pkt->vm_srb.sense_info_length = min_t(u8, sense_buffer_size,
+ vstor_packet->vm_srb.sense_info_length);
if (vstor_packet->vm_srb.scsi_status != 0 ||
vstor_packet->vm_srb.srb_status != SRB_STATUS_SUCCESS)
- storvsc_log(device, STORVSC_LOGGING_WARN,
- "cmd 0x%x scsi status 0x%x srb status 0x%x\n",
+ storvsc_log(device, STORVSC_LOGGING_ERROR,
+ "tag#%d cmd 0x%x status: scsi 0x%x srb 0x%x hv 0x%x\n",
+ request->cmd->request->tag,
stor_pkt->vm_srb.cdb[0],
vstor_packet->vm_srb.scsi_status,
- vstor_packet->vm_srb.srb_status);
-
- if ((vstor_packet->vm_srb.scsi_status & 0xFF) == 0x02) {
- /* CHECK_CONDITION */
- if (vstor_packet->vm_srb.srb_status &
- SRB_STATUS_AUTOSENSE_VALID) {
- /* autosense data available */
-
- storvsc_log(device, STORVSC_LOGGING_WARN,
- "stor pkt %p autosense data valid - len %d\n",
- request, vstor_packet->vm_srb.sense_info_length);
-
- memcpy(request->cmd->sense_buffer,
- vstor_packet->vm_srb.sense_data,
- vstor_packet->vm_srb.sense_info_length);
+ vstor_packet->vm_srb.srb_status,
+ vstor_packet->status);
- }
- }
+ if (vstor_packet->vm_srb.scsi_status == SAM_STAT_CHECK_CONDITION &&
+ (vstor_packet->vm_srb.srb_status & SRB_STATUS_AUTOSENSE_VALID))
+ memcpy(request->cmd->sense_buffer,
+ vstor_packet->vm_srb.sense_data,
+ stor_pkt->vm_srb.sense_info_length);
stor_pkt->vm_srb.data_transfer_length =
- vstor_packet->vm_srb.data_transfer_length;
+ vstor_packet->vm_srb.data_transfer_length;
storvsc_command_completion(request, stor_device);
if (atomic_dec_and_test(&stor_device->num_outstanding_req) &&
stor_device->drain_notify)
wake_up(&stor_device->waiting_to_drain);
-
-
}
static void storvsc_on_receive(struct storvsc_device *stor_device,
@@ -1717,7 +1710,7 @@ static bool storvsc_scsi_cmd_ok(struct scsi_cmnd *scmnd)
* this. So, don't send it.
*/
case SET_WINDOW:
- scmnd->result = DID_ERROR << 16;
+ set_host_byte(scmnd, DID_ERROR);
allowed = false;
break;
default:
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 04:00:58 +0100