[PATCH v2 13/13] scsi: fnic: Improve logs and add support for multiqueue (MQ)

Karan Tilak Kumar
2023-10-27T18:04:24Z

Improve existing logs by adding fnic number, hardware queue,
tag, and mqtag in the prints.
Add logs with the above elements for effective debugging.

Reviewed-by: Sesidhar Baddela <sebaddel@cisco.com>
Reviewed-by: Arulprabhu Ponnusamy <arulponn@cisco.com>
Tested-by: Karan Tilak Kumar <kartilak@cisco.com>
Signed-off-by: Karan Tilak Kumar <kartilak@cisco.com>
---
drivers/scsi/fnic/fnic.h | 2 +-
drivers/scsi/fnic/fnic_scsi.c | 127 ++++++++++++++++++++--------------
2 files changed, 77 insertions(+), 52 deletions(-)

diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
index 87dab09a426d..0f1581c1fb4a 100644
--- a/drivers/scsi/fnic/fnic.h
+++ b/drivers/scsi/fnic/fnic.h
@@ -27,7 +27,7 @@

#define DRV_NAME "fnic"
#define DRV_DESCRIPTION "Cisco FCoE HBA Driver"
-#define DRV_VERSION "1.6.0.56"
+#define DRV_VERSION "1.6.0.58"
#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 fdc4d73ba63c..e6dccb752f7e 100644
--- a/drivers/scsi/fnic/fnic_scsi.c
+++ b/drivers/scsi/fnic/fnic_scsi.c
@@ -211,12 +211,14 @@ int fnic_fw_reset_handler(struct fnic *fnic)

if (!ret) {
atomic64_inc(&fnic->fnic_stats.reset_stats.fw_resets);
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "Issued fw reset\n");
+ FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: Issued fw reset\n",
+ fnic->fnic_num, __func__, __LINE__);
} else {
fnic_clear_state_flags(fnic, FNIC_FLAGS_FWRESET);
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "Failed to issue fw reset\n");
+ FNIC_SCSI_DBG(KERN_ERR, fnic->lport->host,
+ "fnic<%d>: %s: %d: Failed to issue fw reset\n",
+ fnic->fnic_num, __func__, __LINE__);
}

return ret;
@@ -265,9 +267,9 @@ int fnic_flogi_reg_handler(struct fnic *fnic, u32 fc_id)
} else {
fnic_queue_wq_copy_desc_flogi_reg(wq, SCSI_NO_TAG,
format, fc_id, gw_mac);
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "FLOGI reg issued fcid %x map %d dest %pM\n",
- fc_id, fnic->ctlr.map_dest, gw_mac);
+ FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: FLOGI reg issued fcid 0x%x map %d dest 0x%p\n",
+ fnic->fnic_num, __func__, __LINE__, fc_id, fnic->ctlr.map_dest, gw_mac);
}

atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs);
@@ -644,15 +646,16 @@ static int fnic_fcpio_fw_reset_cmpl_handler(struct fnic *fnic,
if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) {
/* Check status of reset completion */
if (!hdr_status) {
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "reset cmpl success\n");
+ FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: reset cmpl success\n",
+ fnic->fnic_num, __func__, __LINE__);
/* Ready to send flogi out */
fnic->state = FNIC_IN_ETH_MODE;
} else {
- FNIC_SCSI_DBG(KERN_DEBUG,
- fnic->lport->host,
- "fnic fw_reset : failed %s\n",
- fnic_fcpio_status_to_str(hdr_status));
+ FNIC_SCSI_DBG(KERN_ERR, fnic->lport->host,
+ "fnic<%d>: %s: %d: reset failed with header status: %s\n",
+ fnic->fnic_num, __func__, __LINE__,
+ fnic_fcpio_status_to_str(hdr_status));

/*
* Unable to change to eth mode, cannot send out flogi
@@ -665,10 +668,9 @@ static int fnic_fcpio_fw_reset_cmpl_handler(struct fnic *fnic,
ret = -1;
}
} else {
- FNIC_SCSI_DBG(KERN_DEBUG,
- fnic->lport->host,
- "Unexpected state %s while processing"
- " reset cmpl\n", fnic_state_to_str(fnic->state));
+ FNIC_SCSI_DBG(KERN_ERR, fnic->lport->host,
+ "fnic<%d>: %s: %d: Unexpected state while processing reset completion: %s\n",
+ fnic->fnic_num, __func__, __LINE__, fnic_state_to_str(fnic->state));
atomic64_inc(&reset_stats->fw_reset_failures);
ret = -1;
}
@@ -1177,9 +1179,10 @@ static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, unsigned int cq_inde
if ((id & FNIC_TAG_ABORT) && (id & FNIC_TAG_DEV_RST)) {
/* Abort and terminate completion of device reset req */
/* REVISIT : Add asserts about various flags */
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "dev reset abts cmpl recd. id %x status %s\n",
- id, fnic_fcpio_status_to_str(hdr_status));
+ FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: hwq: %d mqtag: 0x%x tag: 0x%x hst: %s Abt/term completion received\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, mqtag, tag,
+ fnic_fcpio_status_to_str(hdr_status));
fnic_priv(sc)->state = FNIC_IOREQ_ABTS_COMPLETE;
fnic_priv(sc)->abts_status = hdr_status;
fnic_priv(sc)->flags |= FNIC_DEV_RST_DONE;
@@ -1188,6 +1191,10 @@ static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, unsigned int cq_inde
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
} else if (id & FNIC_TAG_ABORT) {
/* Completion of abort cmd */
+ shost_printk(KERN_DEBUG, fnic->lport->host,
+ "fnic<%d>: %s: %d: hwq: %d mqtag: 0x%x tag: 0x%x Abort header status: %s\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, mqtag, tag,
+ fnic_fcpio_status_to_str(hdr_status));
switch (hdr_status) {
case FCPIO_SUCCESS:
break;
@@ -1247,9 +1254,14 @@ static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, unsigned int cq_inde
if (io_req->abts_done) {
complete(io_req->abts_done);
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
+ shost_printk(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: hwq: %d mqtag: 0x%x tag: 0x%x Waking up abort thread\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, mqtag, tag);
} else {
FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "abts cmpl, completing IO\n");
+ "fnic<%d>: %s: %d: hwq: %d mqtag: 0x%x tag: 0x%x hst: %s Completing IO\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, mqtag,
+ tag, fnic_fcpio_status_to_str(hdr_status));
fnic_priv(sc)->io_req = NULL;
sc->result = (DID_ERROR << 16);
fnic->sw_copy_wq[hwq].io_req_table[tag] = NULL;
@@ -1277,6 +1289,10 @@ static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, unsigned int cq_inde
}
} else if (id & FNIC_TAG_DEV_RST) {
/* Completion of device reset */
+ shost_printk(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: hwq: %d mqtag: 0x%x tag: 0x%x DR hst: %s\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, mqtag,
+ tag, fnic_fcpio_status_to_str(hdr_status));
fnic_priv(sc)->lr_status = hdr_status;
if (fnic_priv(sc)->state == FNIC_IOREQ_ABTS_PENDING) {
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
@@ -1286,10 +1302,9 @@ static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, unsigned int cq_inde
jiffies_to_msecs(jiffies - start_time),
desc, 0, fnic_flags_and_state(sc));
FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "Terminate pending "
- "dev reset cmpl recd. id %d status %s\n",
- (int)(id & FNIC_TAG_MASK),
- fnic_fcpio_status_to_str(hdr_status));
+ "fnic<%d>: %s: %d: hwq: %d mqtag: 0x%x tag: 0x%x hst: %s Terminate pending\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, mqtag,
+ tag, fnic_fcpio_status_to_str(hdr_status));
return;
}
if (fnic_priv(sc)->flags & FNIC_DEV_RST_TIMED_OUT) {
@@ -1308,18 +1323,18 @@ static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, unsigned int cq_inde
}
fnic_priv(sc)->state = FNIC_IOREQ_CMD_COMPLETE;
fnic_priv(sc)->flags |= FNIC_DEV_RST_DONE;
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "dev reset cmpl recd. id %d status %s\n",
- (int)(id & FNIC_TAG_MASK),
- fnic_fcpio_status_to_str(hdr_status));
+ FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: hwq: %d mqtag: 0x%x tag: 0x%x hst: %s DR completion received\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, mqtag,
+ tag, fnic_fcpio_status_to_str(hdr_status));
if (io_req->dr_done)
complete(io_req->dr_done);
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);

} else {
shost_printk(KERN_ERR, fnic->lport->host,
- "Unexpected itmf io state %s tag %x\n",
- fnic_ioreq_state_to_str(fnic_priv(sc)->state), id);
+ "%s: Unexpected itmf io state: hwq: %d tag 0x%x %s\n",
+ __func__, hwq, id, fnic_ioreq_state_to_str(fnic_priv(sc)->state));
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
}

@@ -1470,9 +1485,9 @@ static bool fnic_cleanup_io_iter(struct scsi_cmnd *sc, void *data)
mempool_free(io_req, fnic->io_req_pool);

sc->result = DID_TRANSPORT_DISRUPTED << 16;
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "fnic_cleanup_io: tag:0x%x : sc:0x%p duration = %lu DID_TRANSPORT_DISRUPTED\n",
- tag, sc, jiffies - start_time);
+ FNIC_SCSI_DBG(KERN_ERR, fnic->lport->host,
+ "fnic<%d>: %s: %d: mqtag:0x%x tag: 0x%x sc:0x%p duration = %lu DID_TRANSPORT_DISRUPTED\n",
+ fnic->fnic_num, __func__, __LINE__, mqtag, tag, sc, (jiffies - start_time));

if (atomic64_read(&fnic->io_cmpl_skip))
atomic64_dec(&fnic->io_cmpl_skip);
@@ -1641,9 +1656,9 @@ static bool fnic_rport_abort_io_iter(struct scsi_cmnd *sc, void *data)

if ((fnic_priv(sc)->flags & FNIC_DEVICE_RESET) &&
!(fnic_priv(sc)->flags & FNIC_DEV_RST_ISSUED)) {
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "fnic_rport_exch_reset dev rst not pending sc 0x%p\n",
- sc);
+ FNIC_SCSI_DBG(KERN_ERR, fnic->lport->host,
+ "fnic<%d>: %s: %d: hwq: %d abt_tag: 0x%x flags: 0x%x Device reset is not pending\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, abt_tag, fnic_priv(sc)->flags);
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
return true;
}
@@ -1699,6 +1714,9 @@ static bool fnic_rport_abort_io_iter(struct scsi_cmnd *sc, void *data)
* lun reset
*/
spin_lock_irqsave(&fnic->wq_copy_lock[hwq], flags);
+ FNIC_SCSI_DBG(KERN_ERR, fnic->lport->host,
+ "fnic<%d>: %s: %d: hwq: %d abt_tag: 0x%x flags: 0x%x Queuing abort failed\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, abt_tag, fnic_priv(sc)->flags);
if (fnic_priv(sc)->state == FNIC_IOREQ_ABTS_PENDING)
fnic_priv(sc)->state = old_ioreq_state;
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
@@ -1869,8 +1887,9 @@ int fnic_abort_cmd(struct scsi_cmnd *sc)
else
atomic64_inc(&abts_stats->abort_issued_greater_than_60_sec);

- FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
- "CBD Opcode: %02x Abort issued time: %lu msec\n", sc->cmnd[0], abt_issued_time);
+ FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
+ "fnic<%d>: %s: CDB Opcode: 0x%02x Abort issued time: %lu msec\n",
+ fnic->fnic_num, __func__, sc->cmnd[0], abt_issued_time);
/*
* Command is still pending, need to abort it
* If the firmware completes the command after this point,
@@ -1959,8 +1978,9 @@ int fnic_abort_cmd(struct scsi_cmnd *sc)

if (!(fnic_priv(sc)->flags & (FNIC_IO_ABORTED | FNIC_IO_DONE))) {
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "Issuing Host reset due to out of order IO\n");
+ FNIC_SCSI_DBG(KERN_ERR, fnic->lport->host,
+ "fnic<%d>: %s: Issuing host reset due to out of order IO\n",
+ fnic->fnic_num, __func__);

ret = FAILED;
goto fnic_abort_cmd_end;
@@ -2167,6 +2187,9 @@ static bool fnic_pending_aborts_iter(struct scsi_cmnd *sc, void *data)
fnic_priv(sc)->state = old_ioreq_state;
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
iter_data->ret = FAILED;
+ FNIC_SCSI_DBG(KERN_ERR, fnic->lport->host,
+ "fnic<%d>: %s: %d: hwq: %d abt_tag: 0x%lx Abort could not be queued\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, abt_tag);
return false;
} else {
spin_lock_irqsave(&fnic->wq_copy_lock[hwq], flags);
@@ -2300,8 +2323,9 @@ int fnic_device_reset(struct scsi_cmnd *sc)

rport = starget_to_rport(scsi_target(sc->device));
FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "Device reset called FCID 0x%x, LUN 0x%llx sc 0x%p\n",
- rport->port_id, sc->device->lun, sc);
+ "fnic<%d>: %s: %d: fcid: 0x%x lun: 0x%llx hwq: %d mqtag: 0x%x flags: 0x%x Device reset\n",
+ fnic->fnic_num, __func__, __LINE__, rport->port_id, sc->device->lun, hwq, mqtag,
+ fnic_priv(sc)->flags);

if (lp->state != LPORT_ST_READY || !(lp->link_up))
goto fnic_device_reset_end;
@@ -2536,8 +2560,9 @@ int fnic_reset(struct Scsi_Host *shost)
fnic = lport_priv(lp);
reset_stats = &fnic->fnic_stats.reset_stats;

- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "fnic_reset called\n");
+ FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: Issuing fnic reset\n",
+ fnic->fnic_num, __func__, __LINE__);

atomic64_inc(&reset_stats->fnic_resets);

@@ -2547,10 +2572,9 @@ int fnic_reset(struct Scsi_Host *shost)
*/
ret = fc_lport_reset(lp);

- FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host,
- "Returning from fnic reset %s\n",
- (ret == 0) ?
- "SUCCESS" : "FAILED");
+ FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
+ "fnic<%d>: %s: %d: Returning from fnic reset with: %s\n",
+ fnic->fnic_num, __func__, __LINE__, (ret == 0) ? "SUCCESS" : "FAILED");

if (ret == 0)
atomic64_inc(&reset_stats->fnic_reset_completions);
@@ -2766,8 +2790,9 @@ static bool fnic_abts_pending_iter(struct scsi_cmnd *sc, void *data)
* belongs to the LUN that we are resetting
*/
FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host,
- "Found IO in %s on lun\n",
- fnic_ioreq_state_to_str(fnic_priv(sc)->state));
+ "fnic<%d>: %s: %d: hwq: %d tag: 0x%x Found IO in state: %s on lun\n",
+ fnic->fnic_num, __func__, __LINE__, hwq, tag,
+ fnic_ioreq_state_to_str(fnic_priv(sc)->state));
cmd_state = fnic_priv(sc)->state;
spin_unlock_irqrestore(&fnic->wq_copy_lock[hwq], flags);
if (cmd_state == FNIC_IOREQ_ABTS_PENDING)
--
2.31.1