From patchwork Sat Nov 21 01:21:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Karan Tilak Kumar \(kartilak\)" X-Patchwork-Id: 330524 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-26.3 required=3.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT, USER_IN_DEF_DKIM_WL autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 476B2C5519F for ; Sat, 21 Nov 2020 01:22:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E77B5221FB for ; Sat, 21 Nov 2020 01:22:18 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=cisco.com header.i=@cisco.com header.b="RTnh2hGs" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728048AbgKUBV4 (ORCPT ); Fri, 20 Nov 2020 20:21:56 -0500 Received: from alln-iport-7.cisco.com ([173.37.142.94]:12811 "EHLO alln-iport-7.cisco.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725890AbgKUBV4 (ORCPT ); Fri, 20 Nov 2020 20:21:56 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=cisco.com; i=@cisco.com; l=2935; q=dns/txt; s=iport; t=1605921715; x=1607131315; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=yWUUKHQpzyASWYo7Onuii2fFtI78cOmASNBgI0K+rpc=; b=RTnh2hGsYhzN16WJ/I0Fe/zzt0C/ZypNrnfTRYXf+3K949gEShLo17Q6 LpbZsqZsRE6zKkZScAts5BpvW6bUII9fgGYITdiDGKPAD64HrAucVajT7 h5W5G9WK4+35iLh30l42/r/1rP+K0iy4Nl1Q/nFpGWiiuVzIZoyLRVOdf I=; X-IronPort-AV: E=Sophos;i="5.78,357,1599523200"; d="scan'208";a="595939854" Received: from alln-core-6.cisco.com ([173.36.13.139]) by alln-iport-7.cisco.com with ESMTP/TLS/DHE-RSA-SEED-SHA; 21 Nov 2020 01:21:55 +0000 Received: from localhost.cisco.com ([10.193.101.253]) (authenticated bits=0) by alln-core-6.cisco.com (8.15.2/8.15.2) with ESMTPSA id 0AL1Lndl029473 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Sat, 21 Nov 2020 01:21:54 GMT From: Karan Tilak Kumar To: satishkh@cisco.com Cc: sebaddel@cisco.com, arulponn@cisco.com, jejb@linux.ibm.com, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, Karan Tilak Kumar Subject: [PATCH] scsi: fnic: Avoid looping in TRANS ETH on unload Date: Fri, 20 Nov 2020 17:21:45 -0800 Message-Id: <20201121012145.18522-1-kartilak@cisco.com> X-Mailer: git-send-email 2.28.0 MIME-Version: 1.0 X-Authenticated-User: kartilak@cisco.com X-Outbound-SMTP-Client: 10.193.101.253, [10.193.101.253] X-Outbound-Node: alln-core-6.cisco.com Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org This change is to avoid looping in fnic_scsi_abort_io before sending fw reset when fnic is in TRANS ETH state and when we have not received any link events. Signed-off-by: Karan Tilak Kumar Signed-off-by: Satish Kharat Reviewed-by: Arulprabhu Ponnusamy --- drivers/scsi/fnic/fnic.h | 3 ++- drivers/scsi/fnic/fnic_fcs.c | 2 ++ drivers/scsi/fnic/fnic_main.c | 2 ++ drivers/scsi/fnic/fnic_scsi.c | 3 ++- 4 files changed, 8 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h index ed00b6061e0c..6dc8c916de31 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 "1.6.0.49" +#define DRV_VERSION "1.6.0.50" #define PFX DRV_NAME ": " #define DFX DRV_NAME "%d: " @@ -245,6 +245,7 @@ struct fnic { u32 vlan_hw_insert:1; /* let hw insert the tag */ u32 in_remove:1; /* fnic device in removal */ u32 stop_rx_link_events:1; /* stop proc. rx frames, link events */ + u32 link_events:1; /* set when we get any link event*/ struct completion *remove_wait; /* device remove thread blocks */ diff --git a/drivers/scsi/fnic/fnic_fcs.c b/drivers/scsi/fnic/fnic_fcs.c index 3fc3a7271dc1..3337d6627baf 100644 --- a/drivers/scsi/fnic/fnic_fcs.c +++ b/drivers/scsi/fnic/fnic_fcs.c @@ -56,6 +56,8 @@ void fnic_handle_link(struct work_struct *work) spin_lock_irqsave(&fnic->fnic_lock, flags); + fnic->link_events = 1; /* less work to just set everytime*/ + if (fnic->stop_rx_link_events) { spin_unlock_irqrestore(&fnic->fnic_lock, flags); return; diff --git a/drivers/scsi/fnic/fnic_main.c b/drivers/scsi/fnic/fnic_main.c index 5f8a7ef8f6a8..cad29679e90e 100644 --- a/drivers/scsi/fnic/fnic_main.c +++ b/drivers/scsi/fnic/fnic_main.c @@ -580,6 +580,8 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent) fnic->lport = lp; fnic->ctlr.lp = lp; + fnic->link_events = 0; + snprintf(fnic->name, sizeof(fnic->name) - 1, "%s%d", DRV_NAME, host->host_no); diff --git a/drivers/scsi/fnic/fnic_scsi.c b/drivers/scsi/fnic/fnic_scsi.c index d1f7b84bbfe8..16e66f5b833a 100644 --- a/drivers/scsi/fnic/fnic_scsi.c +++ b/drivers/scsi/fnic/fnic_scsi.c @@ -2673,7 +2673,8 @@ void fnic_scsi_abort_io(struct fc_lport *lp) /* Issue firmware reset for fnic, wait for reset to complete */ retry_fw_reset: spin_lock_irqsave(&fnic->fnic_lock, flags); - if (unlikely(fnic->state == FNIC_IN_FC_TRANS_ETH_MODE)) { + if (unlikely(fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) && + fnic->link_events) { /* fw reset is in progress, poll for its completion */ spin_unlock_irqrestore(&fnic->fnic_lock, flags); schedule_timeout(msecs_to_jiffies(100));