* [PATCH v1 2/3] Cleanup the I/O pending with fw and has timed out and is used to issue LUN reset
2016-03-18 18:22 [PATCH v1 1/3] Fix to cleanup aborted IO to avoid device being offlined by mid-layer Satish Kharat
@ 2016-03-18 18:22 ` Satish Kharat
2016-03-29 14:06 ` Ewan D. Milne
2016-03-18 18:22 ` [PATCH v1 3/3] Using rport->dd_data to check rport online instead of rport_lookup Satish Kharat
` (2 subsequent siblings)
3 siblings, 1 reply; 7+ messages in thread
From: Satish Kharat @ 2016-03-18 18:22 UTC (permalink / raw)
To: satishkh, linux-scsi; +Cc: Sesidhar Baddela
In case of LUN reset, the device reset command is issued with one of
the I/Os that has timed out on that LUN. The change is to also return
this I/O with error status set to DID_RESET. In case when the reset
is issued using the sg_reset tool (from sg3_utils) it is a new command
and new_sc is set to 1.
Fnic driver version changed from 1.6.0.19 to 1.6.0.20
Signed-off-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
---
* v1
- new_sc is set to 1 in cases like lunreset from sg_reset
---
drivers/scsi/fnic/fnic.h | 2 +-
drivers/scsi/fnic/fnic_scsi.c | 38 ++++++++++++++++++++++++++++----------
2 files changed, 29 insertions(+), 11 deletions(-)
diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
index 52a53f8..1023eae 100644
--- a/drivers/scsi/fnic/fnic.h
+++ b/drivers/scsi/fnic/fnic.h
@@ -39,7 +39,7 @@
#define DRV_NAME "fnic"
#define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
-#define DRV_VERSION "1.6.0.19"
+#define DRV_VERSION "1.6.0.20"
#define PFX DRV_NAME ": "
#define DFX DRV_NAME "%d: "
diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
index b732fa3..026b93d 100644
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -2042,7 +2042,9 @@ lr_io_req_end:
* successfully aborted, 1 otherwise
*/
static int fnic_clean_pending_aborts(struct fnic *fnic,
- struct scsi_cmnd *lr_sc)
+ struct scsi_cmnd *lr_sc,
+ bool new_sc)
+
{
int tag, abt_tag;
struct fnic_io_req *io_req;
@@ -2060,10 +2062,10 @@ static int fnic_clean_pending_aborts(struct fnic *fnic,
spin_lock_irqsave(io_lock, flags);
sc = scsi_host_find_tag(fnic->lport->host, tag);
/*
- * ignore this lun reset cmd or cmds that do not belong to
- * this lun
+ * ignore this lun reset cmd if issued using new SC
+ * or cmds that do not belong to this lun
*/
- if (!sc || sc == lr_sc || sc->device != lun_dev) {
+ if (!sc || ((sc == lr_sc) && new_sc) || sc->device != lun_dev) {
spin_unlock_irqrestore(io_lock, flags);
continue;
}
@@ -2169,11 +2171,27 @@ static int fnic_clean_pending_aborts(struct fnic *fnic,
goto clean_pending_aborts_end;
}
CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE;
- CMD_SP(sc) = NULL;
+
+ /* original sc used for lr is handled by dev reset code */
+ if (sc != lr_sc)
+ CMD_SP(sc) = NULL;
spin_unlock_irqrestore(io_lock, flags);
- fnic_release_ioreq_buf(fnic, io_req, sc);
- mempool_free(io_req, fnic->io_req_pool);
+ /* original sc used for lr is handled by dev reset code */
+ if (sc != lr_sc) {
+ fnic_release_ioreq_buf(fnic, io_req, sc);
+ mempool_free(io_req, fnic->io_req_pool);
+ }
+
+ /*
+ * Any IO is returned during reset, it needs to call scsi_done
+ * to return the scsi_cmnd to upper layer.
+ */
+ if (sc->scsi_done) {
+ /* Set result to let upper SCSI layer retry */
+ sc->result = DID_RESET << 16;
+ sc->scsi_done(sc);
+ }
}
schedule_timeout(msecs_to_jiffies(2 * fnic->config.ed_tov));
@@ -2267,6 +2285,7 @@ int fnic_device_reset(struct scsi_cmnd *sc)
int tag = 0;
DECLARE_COMPLETION_ONSTACK(tm_done);
int tag_gen_flag = 0; /*to track tags allocated by fnic driver*/
+ bool new_sc = 0;
/* Wait for rport to unblock */
fc_block_scsi_eh(sc);
@@ -2312,13 +2331,12 @@ int fnic_device_reset(struct scsi_cmnd *sc)
* fix the way the EH ioctls work for real, but until
* that happens we fail these explicit requests here.
*/
- if (shost_use_blk_mq(sc->device->host))
- goto fnic_device_reset_end;
tag = fnic_scsi_host_start_tag(fnic, sc);
if (unlikely(tag == SCSI_NO_TAG))
goto fnic_device_reset_end;
tag_gen_flag = 1;
+ new_sc=1;
}
io_lock = fnic_io_lock_hash(fnic, sc);
spin_lock_irqsave(io_lock, flags);
@@ -2453,7 +2471,7 @@ int fnic_device_reset(struct scsi_cmnd *sc)
* the lun reset cmd. If all cmds get cleaned, the lun reset
* succeeds
*/
- if (fnic_clean_pending_aborts(fnic, sc)) {
+ if (fnic_clean_pending_aborts(fnic, sc, new_sc)) {
spin_lock_irqsave(io_lock, flags);
io_req = (struct fnic_io_req *)CMD_SP(sc);
FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
--
2.4.3
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v1 2/3] Cleanup the I/O pending with fw and has timed out and is used to issue LUN reset
2016-03-18 18:22 ` [PATCH v1 2/3] Cleanup the I/O pending with fw and has timed out and is used to issue LUN reset Satish Kharat
@ 2016-03-29 14:06 ` Ewan D. Milne
0 siblings, 0 replies; 7+ messages in thread
From: Ewan D. Milne @ 2016-03-29 14:06 UTC (permalink / raw)
To: Satish Kharat; +Cc: linux-scsi, Sesidhar Baddela
On Fri, 2016-03-18 at 11:22 -0700, Satish Kharat wrote:
> In case of LUN reset, the device reset command is issued with one of
> the I/Os that has timed out on that LUN. The change is to also return
> this I/O with error status set to DID_RESET. In case when the reset
> is issued using the sg_reset tool (from sg3_utils) it is a new command
> and new_sc is set to 1.
> Fnic driver version changed from 1.6.0.19 to 1.6.0.20
>
> Signed-off-by: Satish Kharat <satishkh@cisco.com>
> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
> ---
> * v1
> - new_sc is set to 1 in cases like lunreset from sg_reset
> ---
> drivers/scsi/fnic/fnic.h | 2 +-
> drivers/scsi/fnic/fnic_scsi.c | 38 ++++++++++++++++++++++++++++----------
> 2 files changed, 29 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
> index 52a53f8..1023eae 100644
> --- a/drivers/scsi/fnic/fnic.h
> +++ b/drivers/scsi/fnic/fnic.h
> @@ -39,7 +39,7 @@
>
> #define DRV_NAME "fnic"
> #define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
> -#define DRV_VERSION "1.6.0.19"
> +#define DRV_VERSION "1.6.0.20"
> #define PFX DRV_NAME ": "
> #define DFX DRV_NAME "%d: "
>
> diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
> index b732fa3..026b93d 100644
> --- a/drivers/scsi/fnic/fnic_scsi.c
> +++ b/drivers/scsi/fnic/fnic_scsi.c
> @@ -2042,7 +2042,9 @@ lr_io_req_end:
> * successfully aborted, 1 otherwise
> */
> static int fnic_clean_pending_aborts(struct fnic *fnic,
> - struct scsi_cmnd *lr_sc)
> + struct scsi_cmnd *lr_sc,
> + bool new_sc)
> +
> {
> int tag, abt_tag;
> struct fnic_io_req *io_req;
> @@ -2060,10 +2062,10 @@ static int fnic_clean_pending_aborts(struct fnic *fnic,
> spin_lock_irqsave(io_lock, flags);
> sc = scsi_host_find_tag(fnic->lport->host, tag);
> /*
> - * ignore this lun reset cmd or cmds that do not belong to
> - * this lun
> + * ignore this lun reset cmd if issued using new SC
> + * or cmds that do not belong to this lun
> */
> - if (!sc || sc == lr_sc || sc->device != lun_dev) {
> + if (!sc || ((sc == lr_sc) && new_sc) || sc->device != lun_dev) {
> spin_unlock_irqrestore(io_lock, flags);
> continue;
> }
> @@ -2169,11 +2171,27 @@ static int fnic_clean_pending_aborts(struct fnic *fnic,
> goto clean_pending_aborts_end;
> }
> CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE;
> - CMD_SP(sc) = NULL;
> +
> + /* original sc used for lr is handled by dev reset code */
> + if (sc != lr_sc)
> + CMD_SP(sc) = NULL;
> spin_unlock_irqrestore(io_lock, flags);
>
> - fnic_release_ioreq_buf(fnic, io_req, sc);
> - mempool_free(io_req, fnic->io_req_pool);
> + /* original sc used for lr is handled by dev reset code */
> + if (sc != lr_sc) {
> + fnic_release_ioreq_buf(fnic, io_req, sc);
> + mempool_free(io_req, fnic->io_req_pool);
> + }
> +
> + /*
> + * Any IO is returned during reset, it needs to call scsi_done
> + * to return the scsi_cmnd to upper layer.
> + */
> + if (sc->scsi_done) {
> + /* Set result to let upper SCSI layer retry */
> + sc->result = DID_RESET << 16;
> + sc->scsi_done(sc);
> + }
> }
>
> schedule_timeout(msecs_to_jiffies(2 * fnic->config.ed_tov));
> @@ -2267,6 +2285,7 @@ int fnic_device_reset(struct scsi_cmnd *sc)
> int tag = 0;
> DECLARE_COMPLETION_ONSTACK(tm_done);
> int tag_gen_flag = 0; /*to track tags allocated by fnic driver*/
> + bool new_sc = 0;
>
> /* Wait for rport to unblock */
> fc_block_scsi_eh(sc);
> @@ -2312,13 +2331,12 @@ int fnic_device_reset(struct scsi_cmnd *sc)
> * fix the way the EH ioctls work for real, but until
> * that happens we fail these explicit requests here.
> */
> - if (shost_use_blk_mq(sc->device->host))
> - goto fnic_device_reset_end;
>
> tag = fnic_scsi_host_start_tag(fnic, sc);
> if (unlikely(tag == SCSI_NO_TAG))
> goto fnic_device_reset_end;
> tag_gen_flag = 1;
> + new_sc=1;
> }
> io_lock = fnic_io_lock_hash(fnic, sc);
> spin_lock_irqsave(io_lock, flags);
> @@ -2453,7 +2471,7 @@ int fnic_device_reset(struct scsi_cmnd *sc)
> * the lun reset cmd. If all cmds get cleaned, the lun reset
> * succeeds
> */
> - if (fnic_clean_pending_aborts(fnic, sc)) {
> + if (fnic_clean_pending_aborts(fnic, sc, new_sc)) {
> spin_lock_irqsave(io_lock, flags);
> io_req = (struct fnic_io_req *)CMD_SP(sc);
> FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
For v1:
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH v1 3/3] Using rport->dd_data to check rport online instead of rport_lookup.
2016-03-18 18:22 [PATCH v1 1/3] Fix to cleanup aborted IO to avoid device being offlined by mid-layer Satish Kharat
2016-03-18 18:22 ` [PATCH v1 2/3] Cleanup the I/O pending with fw and has timed out and is used to issue LUN reset Satish Kharat
@ 2016-03-18 18:22 ` Satish Kharat
2016-03-29 14:06 ` Ewan D. Milne
2016-03-29 14:06 ` [PATCH v1 1/3] Fix to cleanup aborted IO to avoid device being offlined by mid-layer Ewan D. Milne
2016-03-30 0:46 ` Martin K. Petersen
3 siblings, 1 reply; 7+ messages in thread
From: Satish Kharat @ 2016-03-18 18:22 UTC (permalink / raw)
To: satishkh, linux-scsi; +Cc: Sesidhar Baddela
When issuing I/O we check if rport is online through libfc
rport_lookup() function which needs to be protected by mutex lock
that cannot acquired in I/O context. The change is to use midlayer
remote port’s dd_data which is preserved until its devloss timeout
and no protection is required.
The the scsi_cmnd error code is expected to be in the left 16 bits
of the result field. Changed to correct this.
Fnic driver version changed from 1.6.0.20 to 1.6.0.21
Signed-off-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
---
* v1
- DID_NO_CONNECT left shifted 16 bits before assigning to sc->result
---
drivers/scsi/fnic/fnic.h | 2 +-
drivers/scsi/fnic/fnic_scsi.c | 20 +++++++++++---------
2 files changed, 12 insertions(+), 10 deletions(-)
diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
index 1023eae..9ddc920 100644
--- a/drivers/scsi/fnic/fnic.h
+++ b/drivers/scsi/fnic/fnic.h
@@ -39,7 +39,7 @@
#define DRV_NAME "fnic"
#define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
-#define DRV_VERSION "1.6.0.20"
+#define DRV_VERSION "1.6.0.21"
#define PFX DRV_NAME ": "
#define DFX DRV_NAME "%d: "
diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
index 026b93d..0e874a5 100644
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -439,7 +439,6 @@ static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_
int sg_count = 0;
unsigned long flags = 0;
unsigned long ptr;
- struct fc_rport_priv *rdata;
spinlock_t *io_lock = NULL;
int io_lock_acquired = 0;
@@ -455,14 +454,17 @@ static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_
return 0;
}
- rdata = lp->tt.rport_lookup(lp, rport->port_id);
- if (!rdata || (rdata->rp_state == RPORT_ST_DELETE)) {
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "returning IO as rport is removed\n");
- atomic64_inc(&fnic_stats->misc_stats.rport_not_ready);
- sc->result = DID_NO_CONNECT;
- done(sc);
- return 0;
+ if (rport) {
+ struct fc_rport_libfc_priv *rp = rport->dd_data;
+
+ if (!rp || rp->rp_state != RPORT_ST_READY) {
+ FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
+ "returning DID_NO_CONNECT for IO as rport is removed\n");
+ atomic64_inc(&fnic_stats->misc_stats.rport_not_ready);
+ sc->result = DID_NO_CONNECT<<16;
+ done(sc);
+ return 0;
+ }
}
if (lp->state != LPORT_ST_READY || !(lp->link_up))
--
2.4.3
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^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v1 3/3] Using rport->dd_data to check rport online instead of rport_lookup.
2016-03-18 18:22 ` [PATCH v1 3/3] Using rport->dd_data to check rport online instead of rport_lookup Satish Kharat
@ 2016-03-29 14:06 ` Ewan D. Milne
0 siblings, 0 replies; 7+ messages in thread
From: Ewan D. Milne @ 2016-03-29 14:06 UTC (permalink / raw)
To: Satish Kharat; +Cc: linux-scsi, Sesidhar Baddela
On Fri, 2016-03-18 at 11:22 -0700, Satish Kharat wrote:
> When issuing I/O we check if rport is online through libfc
> rport_lookup() function which needs to be protected by mutex lock
> that cannot acquired in I/O context. The change is to use midlayer
> remote port’s dd_data which is preserved until its devloss timeout
> and no protection is required.
> The the scsi_cmnd error code is expected to be in the left 16 bits
> of the result field. Changed to correct this.
> Fnic driver version changed from 1.6.0.20 to 1.6.0.21
>
> Signed-off-by: Satish Kharat <satishkh@cisco.com>
> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
> ---
> * v1
> - DID_NO_CONNECT left shifted 16 bits before assigning to sc->result
> ---
> drivers/scsi/fnic/fnic.h | 2 +-
> drivers/scsi/fnic/fnic_scsi.c | 20 +++++++++++---------
> 2 files changed, 12 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
> index 1023eae..9ddc920 100644
> --- a/drivers/scsi/fnic/fnic.h
> +++ b/drivers/scsi/fnic/fnic.h
> @@ -39,7 +39,7 @@
>
> #define DRV_NAME "fnic"
> #define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
> -#define DRV_VERSION "1.6.0.20"
> +#define DRV_VERSION "1.6.0.21"
> #define PFX DRV_NAME ": "
> #define DFX DRV_NAME "%d: "
>
> diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
> index 026b93d..0e874a5 100644
> --- a/drivers/scsi/fnic/fnic_scsi.c
> +++ b/drivers/scsi/fnic/fnic_scsi.c
> @@ -439,7 +439,6 @@ static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_
> int sg_count = 0;
> unsigned long flags = 0;
> unsigned long ptr;
> - struct fc_rport_priv *rdata;
> spinlock_t *io_lock = NULL;
> int io_lock_acquired = 0;
>
> @@ -455,14 +454,17 @@ static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_
> return 0;
> }
>
> - rdata = lp->tt.rport_lookup(lp, rport->port_id);
> - if (!rdata || (rdata->rp_state == RPORT_ST_DELETE)) {
> - FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
> - "returning IO as rport is removed\n");
> - atomic64_inc(&fnic_stats->misc_stats.rport_not_ready);
> - sc->result = DID_NO_CONNECT;
> - done(sc);
> - return 0;
> + if (rport) {
> + struct fc_rport_libfc_priv *rp = rport->dd_data;
> +
> + if (!rp || rp->rp_state != RPORT_ST_READY) {
> + FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
> + "returning DID_NO_CONNECT for IO as rport is removed\n");
> + atomic64_inc(&fnic_stats->misc_stats.rport_not_ready);
> + sc->result = DID_NO_CONNECT<<16;
> + done(sc);
> + return 0;
> + }
> }
>
> if (lp->state != LPORT_ST_READY || !(lp->link_up))
For v1:
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
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^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH v1 1/3] Fix to cleanup aborted IO to avoid device being offlined by mid-layer
2016-03-18 18:22 [PATCH v1 1/3] Fix to cleanup aborted IO to avoid device being offlined by mid-layer Satish Kharat
2016-03-18 18:22 ` [PATCH v1 2/3] Cleanup the I/O pending with fw and has timed out and is used to issue LUN reset Satish Kharat
2016-03-18 18:22 ` [PATCH v1 3/3] Using rport->dd_data to check rport online instead of rport_lookup Satish Kharat
@ 2016-03-29 14:06 ` Ewan D. Milne
2016-03-30 0:46 ` Martin K. Petersen
3 siblings, 0 replies; 7+ messages in thread
From: Ewan D. Milne @ 2016-03-29 14:06 UTC (permalink / raw)
To: Satish Kharat; +Cc: linux-scsi, Sesidhar Baddela
On Fri, 2016-03-18 at 11:22 -0700, Satish Kharat wrote:
> If an I/O times out and an abort issued by host, if the abort is
> successful we need to set scsi status as DID_ABORT. Or else the
> mid-layer error handler which looks for this error code, will
> offline the device. Also if the original I/O is not found in fnic
> firmware, we will consider the abort as successful.
> The start_time assignment is moved because of the new goto.
> Fnic driver version changed from 1.6.0.17a to 1.6.0.19,
> version 1.6.0.18 has been skipped
>
> Signed-off-by: Satish Kharat <satishkh@cisco.com>
> Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
> Reviewed-by: Ewan D. Milne <emilne@redhat.com>
> ---
> * v1
> - Moved CMD_ABTS_STATUS assignment to else when not FCPIO_SUCCESS
>
> drivers/scsi/fnic/fnic.h | 2 +-
> drivers/scsi/fnic/fnic_scsi.c | 35 +++++++++++++++++++++++++++++------
> 2 files changed, 30 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
> index ce129e5..52a53f8 100644
> --- a/drivers/scsi/fnic/fnic.h
> +++ b/drivers/scsi/fnic/fnic.h
> @@ -39,7 +39,7 @@
>
> #define DRV_NAME "fnic"
> #define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
> -#define DRV_VERSION "1.6.0.17a"
> +#define DRV_VERSION "1.6.0.19"
> #define PFX DRV_NAME ": "
> #define DFX DRV_NAME "%d: "
>
> diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c
> index 266b909..b732fa3 100644
> --- a/drivers/scsi/fnic/fnic_scsi.c
> +++ b/drivers/scsi/fnic/fnic_scsi.c
> @@ -1092,6 +1092,11 @@ static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic,
> atomic64_inc(
> &term_stats->terminate_fw_timeouts);
> break;
> + case FCPIO_ITMF_REJECTED:
> + FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
> + "abort reject recd. id %d\n",
> + (int)(id & FNIC_TAG_MASK));
> + break;
> case FCPIO_IO_NOT_FOUND:
> if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED)
> atomic64_inc(&abts_stats->abort_io_not_found);
> @@ -1112,9 +1117,15 @@ static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic,
> spin_unlock_irqrestore(io_lock, flags);
> return;
> }
> - CMD_ABTS_STATUS(sc) = hdr_status;
> +
> CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE;
>
> + /* If the status is IO not found consider it as success */
> + if (hdr_status == FCPIO_IO_NOT_FOUND)
> + CMD_ABTS_STATUS(sc) = FCPIO_SUCCESS;
> + else
> + CMD_ABTS_STATUS(sc) = hdr_status;
> +
> atomic64_dec(&fnic_stats->io_stats.active_ios);
> if (atomic64_read(&fnic->io_cmpl_skip))
> atomic64_dec(&fnic->io_cmpl_skip);
> @@ -1927,21 +1938,33 @@ int fnic_abort_cmd(struct scsi_cmnd *sc)
>
> CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE;
>
> + start_time = io_req->start_time;
> /*
> * firmware completed the abort, check the status,
> - * free the io_req irrespective of failure or success
> + * free the io_req if successful. If abort fails,
> + * Device reset will clean the I/O.
> */
> - if (CMD_ABTS_STATUS(sc) != FCPIO_SUCCESS)
> + if (CMD_ABTS_STATUS(sc) == FCPIO_SUCCESS) {
> + CMD_SP(sc) = NULL;
> + }
> + else
> + {
> ret = FAILED;
> -
> - CMD_SP(sc) = NULL;
> + spin_unlock_irqrestore(io_lock, flags);
> + goto fnic_abort_cmd_end;
> + }
>
> spin_unlock_irqrestore(io_lock, flags);
>
> - start_time = io_req->start_time;
> fnic_release_ioreq_buf(fnic, io_req, sc);
> mempool_free(io_req, fnic->io_req_pool);
>
> + if (sc->scsi_done) {
> + /* Call SCSI completion function to complete the IO */
> + sc->result = (DID_ABORT << 16);
> + sc->scsi_done(sc);
> + }
> +
> fnic_abort_cmd_end:
> FNIC_TRACE(fnic_abort_cmd, sc->device->host->host_no,
> sc->request->tag, sc,
For v1:
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [PATCH v1 1/3] Fix to cleanup aborted IO to avoid device being offlined by mid-layer
2016-03-18 18:22 [PATCH v1 1/3] Fix to cleanup aborted IO to avoid device being offlined by mid-layer Satish Kharat
` (2 preceding siblings ...)
2016-03-29 14:06 ` [PATCH v1 1/3] Fix to cleanup aborted IO to avoid device being offlined by mid-layer Ewan D. Milne
@ 2016-03-30 0:46 ` Martin K. Petersen
3 siblings, 0 replies; 7+ messages in thread
From: Martin K. Petersen @ 2016-03-30 0:46 UTC (permalink / raw)
To: Satish Kharat; +Cc: linux-scsi, Sesidhar Baddela, Ewan Milne
>>>>> "Satish" == Satish Kharat <satishkh@cisco.com> writes:
Satish,
Satish> If an I/O times out and an abort issued by host, if the abort is
Satish> successful we need to set scsi status as DID_ABORT. Or else the
Satish> mid-layer error handler which looks for this error code, will
Satish> offline the device. Also if the original I/O is not found in
Satish> fnic firmware, we will consider the abort as successful. The
Satish> start_time assignment is moved because of the new goto. Fnic
Satish> driver version changed from 1.6.0.17a to 1.6.0.19, version
Satish> 1.6.0.18 has been skipped
I applied patches 1-3 to 4.7/scsi-queue.
In the future, please make sure you add an "fnic:" prefix to the patch
description so it's clear in the commit log which driver is being
modified.
Also, always run checkpatch before submitting. I had to fix up a few
warnings.
Thanks!
--
Martin K. Petersen Oracle Linux Engineering
^ permalink raw reply [flat|nested] 7+ messages in thread