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-rw-r--r--drivers/scsi/constants.c3
-rw-r--r--drivers/scsi/scsi_error.c15
-rw-r--r--include/scsi/scsi.h5
3 files changed, 21 insertions, 2 deletions
diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
index 9785d73..4003dee 100644
--- a/drivers/scsi/constants.c
+++ b/drivers/scsi/constants.c
@@ -1364,7 +1364,8 @@ EXPORT_SYMBOL(scsi_print_sense);
static const char * const hostbyte_table[]={
"DID_OK", "DID_NO_CONNECT", "DID_BUS_BUSY", "DID_TIME_OUT", "DID_BAD_TARGET",
"DID_ABORT", "DID_PARITY", "DID_ERROR", "DID_RESET", "DID_BAD_INTR",
-"DID_PASSTHROUGH", "DID_SOFT_ERROR", "DID_IMM_RETRY", "DID_REQUEUE"};
+"DID_PASSTHROUGH", "DID_SOFT_ERROR", "DID_IMM_RETRY", "DID_REQUEUE",
+"DID_TRANSPORT_DISRUPTED", "DID_TRANSPORT_FAILFAST" };
#define NUM_HOSTBYTE_STRS ARRAY_SIZE(hostbyte_table)
static const char * const driverbyte_table[]={
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index fecefa0..5bf8be2 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -1290,7 +1290,20 @@ int scsi_decide_disposition(struct scsi_cmnd *scmd)
case DID_REQUEUE:
return ADD_TO_MLQUEUE;
-
+ case DID_TRANSPORT_DISRUPTED:
+ /*
+ * LLD/transport was disrupted during processing of the IO.
+ * The transport class is now blocked/blocking,
+ * and the transport will decide what to do with the IO
+ * based on its timers and recovery capablilities.
+ */
+ return ADD_TO_MLQUEUE;
+ case DID_TRANSPORT_FAILFAST:
+ /*
+ * The transport decided to failfast the IO (most likely
+ * the fast io fail tmo fired), so send IO directly upwards.
+ */
+ return SUCCESS;
case DID_ERROR:
if (msg_byte(scmd->result) == COMMAND_COMPLETE &&
status_byte(scmd->result) == RESERVATION_CONFLICT)
diff --git a/include/scsi/scsi.h b/include/scsi/scsi.h
index 3a5662b..a109165 100644
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -381,6 +381,11 @@ static inline int scsi_is_wlun(unsigned int lun)
#define DID_IMM_RETRY 0x0c /* Retry without decrementing retry count */
#define DID_REQUEUE 0x0d /* Requeue command (no immediate retry) also
* without decrementing the retry count */
+#define DID_TRANSPORT_DISRUPTED 0x0e /* Transport error disrupted execution
+ * and the driver blocked the port to
+ * recover the link. Transport class will
+ * retry or fail IO */
+#define DID_TRANSPORT_FAILFAST 0x0f /* Transport class fastfailed the io */
#define DRIVER_OK 0x00 /* Driver status */
/*
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