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scsi: lpfc: Log discarded and insufficient RQE buffer events

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An RCQE with statuses indicating that an RQE is dropped or when there
are insufficient buffers to receive new RQEs are currently occuring
silently.  Add a new log message to warn when such events occur.

Signed-off-by: Justin Tee <justin.tee@broadcom.com>
Link: https://patch.msgid.link/20260212213008.149873-3-justintee8345@gmail.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Justin Tee 2026-02-12 13:29:57 -08:00 committed by Martin K. Petersen
parent 8ecb3ec244
commit b4082ac8e6
2 changed files with 18 additions and 4 deletions
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17
drivers/scsi/lpfc/lpfc_sli.c
View File

@ -1,7 +1,7 @@
/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2017-2025 Broadcom. All Rights Reserved. The term *
* Copyright (C) 2017-2026 Broadcom. All Rights Reserved. The term *
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
* Copyright (C) 2004-2016 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
@ -14736,11 +14736,22 @@ lpfc_sli4_sp_handle_rcqe(struct lpfc_hba *phba, struct lpfc_rcqe *rcqe)
atomic_read(&tgtp->rcv_fcp_cmd_out),
atomic_read(&tgtp->xmt_fcp_release));
}
hrq->RQ_discard_frm++;
fallthrough;
case FC_STATUS_INSUFF_BUF_NEED_BUF:
/* Unexpected event - bump the counter for support. */
hrq->RQ_no_posted_buf++;
/* Post more buffers if possible */
lpfc_log_msg(phba, KERN_WARNING,
LOG_ELS | LOG_DISCOVERY | LOG_SLI,
"6423 RQE completion Status x%x, needed x%x "
"discarded x%x\n", status,
hrq->RQ_no_posted_buf - hrq->RQ_discard_frm,
hrq->RQ_discard_frm);
/* For SLI3, post more buffers if possible. No action for SLI4.
* SLI4 is reposting immediately after processing the RQE.
*/
set_bit(HBA_POST_RECEIVE_BUFFER, &phba->hba_flag);
workposted = true;
break;

5
drivers/scsi/lpfc/lpfc_sli4.h
View File

@ -1,7 +1,7 @@
/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2017-2025 Broadcom. All Rights Reserved. The term *
* Copyright (C) 2017-2026 Broadcom. All Rights Reserved. The term *
* “Broadcom” refers to Broadcom Inc. and/or its subsidiaries. *
* Copyright (C) 2009-2016 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
@ -246,6 +246,8 @@ struct lpfc_queue {
uint32_t q_cnt_2;
uint32_t q_cnt_3;
uint64_t q_cnt_4;
uint32_t q_cnt_5;
/* defines for EQ stats */
#define EQ_max_eqe q_cnt_1
#define EQ_no_entry q_cnt_2
@ -268,6 +270,7 @@ struct lpfc_queue {
#define RQ_no_buf_found q_cnt_2
#define RQ_buf_posted q_cnt_3
#define RQ_rcv_buf q_cnt_4
#define RQ_discard_frm q_cnt_5
struct work_struct irqwork;
struct work_struct spwork;