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Thu, 12 Dec 2024 15:14:49 -0800 (PST) Received: from dhcp-10-231-55-133.dhcp.broadcom.net ([192.19.223.252]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-216325f51d6sm92727875ad.197.2024.12.12.15.14.48 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 12 Dec 2024 15:14:49 -0800 (PST) From: Justin Tee To: linux-scsi@vger.kernel.org Cc: jsmart2021@gmail.com, justin.tee@broadcom.com, Justin Tee Subject: [PATCH 05/10] lpfc: Add handling for LS_RJT reason explanation authentication required Date: Thu, 12 Dec 2024 15:33:04 -0800 Message-Id: <20241212233309.71356-6-justintee8345@gmail.com> X-Mailer: git-send-email 2.38.0 In-Reply-To: <20241212233309.71356-1-justintee8345@gmail.com> References: <20241212233309.71356-1-justintee8345@gmail.com> Precedence: bulk X-Mailing-List: linux-scsi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 When a LS_RJT is received with reason explanation authentication required, current driver logic is to retry the PLOGI up to 48 times. In the worse case scenario, 48 retries can take longer than dev_loss_tmo and if there is an RSCN received indicating an authentication requirement change, the driver may miss processing it. Fix by adding logic to specifically handle reason explanation authentication required and set the max retry count to 8 times. Signed-off-by: Justin Tee --- drivers/scsi/lpfc/lpfc_els.c | 26 ++++++++++++++++++++++++++ drivers/scsi/lpfc/lpfc_hw.h | 1 + 2 files changed, 27 insertions(+) diff --git a/drivers/scsi/lpfc/lpfc_els.c b/drivers/scsi/lpfc/lpfc_els.c index 842b67e37f10..32e5e99ebbd4 100644 --- a/drivers/scsi/lpfc/lpfc_els.c +++ b/drivers/scsi/lpfc/lpfc_els.c @@ -4570,6 +4570,7 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, int link_reset = 0, rc; u32 ulp_status = get_job_ulpstatus(phba, rspiocb); u32 ulp_word4 = get_job_word4(phba, rspiocb); + u8 rsn_code_exp = 0; /* Note: cmd_dmabuf may be 0 for internal driver abort @@ -4785,11 +4786,22 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, break; case LSRJT_LOGICAL_BSY: + rsn_code_exp = stat.un.b.lsRjtRsnCodeExp; if ((cmd == ELS_CMD_PLOGI) || (cmd == ELS_CMD_PRLI) || (cmd == ELS_CMD_NVMEPRLI)) { delay = 1000; maxretry = 48; + + /* An authentication LS_RJT reason code + * explanation means some error in the + * security settings end-to-end. Reduce + * the retry count to allow lpfc to clear + * RSCN mode and not race with dev_loss. + */ + if (cmd == ELS_CMD_PLOGI && + rsn_code_exp == LSEXP_AUTH_REQ) + maxretry = 8; } else if (cmd == ELS_CMD_FDISC) { /* FDISC retry policy */ maxretry = 48; @@ -4818,6 +4830,20 @@ lpfc_els_retry(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb, "0820 FLOGI (x%x). " "BBCredit Not Supported\n", stat.un.lsRjtError); + } else if (cmd == ELS_CMD_PLOGI) { + rsn_code_exp = stat.un.b.lsRjtRsnCodeExp; + + /* An authentication LS_RJT reason code + * explanation means some error in the + * security settings end-to-end. Reduce + * the retry count to allow lpfc to clear + * RSCN mode and not race with dev_loss. + */ + if (rsn_code_exp == LSEXP_AUTH_REQ) { + delay = 1000; + retry = 1; + maxretry = 8; + } } break; diff --git a/drivers/scsi/lpfc/lpfc_hw.h b/drivers/scsi/lpfc/lpfc_hw.h index d5c15742f7f2..71d3e60f4b20 100644 --- a/drivers/scsi/lpfc/lpfc_hw.h +++ b/drivers/scsi/lpfc/lpfc_hw.h @@ -724,6 +724,7 @@ struct ls_rjt { /* Structure is in Big Endian format */ #define LSEXP_OUT_OF_RESOURCE 0x29 #define LSEXP_CANT_GIVE_DATA 0x2A #define LSEXP_REQ_UNSUPPORTED 0x2C +#define LSEXP_AUTH_REQ 0x48 #define LSEXP_NO_RSRC_ASSIGN 0x52 uint8_t vendorUnique; /* FC Word 0, bit 0: 7 */ } b;