From mboxrd@z Thu Jan 1 00:00:00 1970 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=-11.2 required=3.0 tests=BAYES_00,DATE_IN_PAST_06_12, DKIMWL_WL_HIGH,DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, MIME_HEADER_CTYPE_ONLY,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, T_TVD_MIME_NO_HEADERS,USER_AGENT_GIT autolearn=ham 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 07B73C433DF for ; Thu, 15 Oct 2020 10:21:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 8403E22249 for ; Thu, 15 Oct 2020 10:21:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=broadcom.com header.i=@broadcom.com header.b="H6hR9Pe1" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2389216AbgJOKVZ (ORCPT ); Thu, 15 Oct 2020 06:21:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46912 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2389099AbgJOKVZ (ORCPT ); Thu, 15 Oct 2020 06:21:25 -0400 Received: from mail-pg1-x544.google.com (mail-pg1-x544.google.com [IPv6:2607:f8b0:4864:20::544]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DFC26C061755 for ; Thu, 15 Oct 2020 03:21:24 -0700 (PDT) Received: by mail-pg1-x544.google.com with SMTP id r10so1612913pgb.10 for ; Thu, 15 Oct 2020 03:21:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=T8B9akbRZwipPegQunnvBAXugv0e1h0PbYHIixJnhIE=; b=H6hR9Pe1rCQpUKVyXAjlVsMpi5SyApeCDN4PPq53GULhm/Dp58um/h4ikJbOVbDGfd ZkJGTk50S3MvPTa0TrGiZVbuM3fc2LLVuPB6wbY0P72MYOkQ77blFT/Wu7wgTYFHgocc u5t2LjjemWrf59Dpoq8VHcs+I//Xq7V62Qpv8= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=T8B9akbRZwipPegQunnvBAXugv0e1h0PbYHIixJnhIE=; b=ap6ND26ltIPIKU2yGDFWULq3STX2C2d/nagPjhh5HYWEhZsGliaGWGlGpiGtdijfoH /2qLop42sQGwfg0XLfJnqK/z+vDbVPntJHmcLWj7YOmzkpF0zBQOHYVJgdO02QrWb54G cARsRDyBqaKOef4MjTqsdhdL6kbMiGe/sRKDCT+Cy4LB8le36QX2HtEgk0J1fwqZ22hN 2IPtvCLBPACf5LuL8J1h7Xfyd0eT/fo2DU4waLJ0woezDeVxjL1XvRyF+lUmtsXawexX 8MgJFDakPaAHUAZFkOomlRv9gHC1rRjF53YHJHI1YbNHtRhdHACj/XYj9xG3qflT4Wqc /qmg== X-Gm-Message-State: AOAM533zPrR0BTBD7btH3YE0hYYKOUcVOeStDEn98fCuPxTqCnYLmvtV l1YIfcrpQ26jUATcvx+hvhg9YATFxrK2YuAvSegjo+HimZyfL+HECVxnBJiDGuViMf3nvzHLSsL won/YZELEJxUz7QWFaoNcPoeHp5TE4bOXMi85VaITOL4tKVT3SPGwOMvc+g2KphZFzVne50kfIu QLK8gWkCXPnB4= X-Google-Smtp-Source: ABdhPJz+16fHdFPMcv67z5110G0iwcP53YBOyEGzS8q9l/1d3bkH9qcnhw+vQZ8najLZ5rpdKKqwcQ== X-Received: by 2002:a63:d111:: with SMTP id k17mr2571274pgg.299.1602757283856; Thu, 15 Oct 2020 03:21:23 -0700 (PDT) Received: from localhost.localdomain ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id 194sm2802258pfz.182.2020.10.15.03.21.21 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Thu, 15 Oct 2020 03:21:23 -0700 (PDT) From: Muneendra To: linux-scsi@vger.kernel.org, hare@suse.de Cc: jsmart2021@gmail.com, emilne@redhat.com, mkumar@redhat.com, Muneendra Subject: [PATCH v3 06/17] scsi_transport_fc: Added store fucntionality to set the rport port_state using sysfs Date: Thu, 15 Oct 2020 08:57:31 +0530 Message-Id: <1602732462-10443-7-git-send-email-muneendra.kumar@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1602732462-10443-1-git-send-email-muneendra.kumar@broadcom.com> References: <1602732462-10443-1-git-send-email-muneendra.kumar@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="000000000000998b4005b1b3025b" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --000000000000998b4005b1b3025b Added a store functionality to set rport port_state using sysfs under fc_remote_ports/rport-*/port_state With this functionality the user can move the port_state from Marginal->Online and Online->Marginal. On Marginal :This interface will set SCMD_NORETRIES_ABORT bit in scmd->state for all the io's on the scsi device associated with remote port. On Online :This interface will clear SCMD_NORETRIES_ABORT bit in scmd->state for all the pending io's on the scsi device associated with remote port. Below is the interface provided to set the port state to Marginal and Online. echo "Marginal" >> /sys/class/fc_remote_ports/rport-X\:Y-Z/port_state echo "Online" >> /sys/class/fc_remote_ports/rport-X\:Y-Z/port_state Signed-off-by: Muneendra --- v3: Removed the port_state from starget attributes. Enabled the store functionality for port_state under remote port. used the starget_for_each_device to traverse around all the devices under rport v2: Changed from a noretries_abort attribute under fc_transport/target*/ to port_state for changing the port_state to a marginal state --- drivers/scsi/scsi_transport_fc.c | 85 +++++++++++++++++++++++++++++++- 1 file changed, 83 insertions(+), 2 deletions(-) diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c index df66a51d62e6..ac5283b645a6 100644 --- a/drivers/scsi/scsi_transport_fc.c +++ b/drivers/scsi/scsi_transport_fc.c @@ -943,7 +943,88 @@ show_fc_rport_roles (struct device *dev, struct device_attribute *attr, static FC_DEVICE_ATTR(rport, roles, S_IRUGO, show_fc_rport_roles, NULL); -fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); +static void +device_chg_noretries_abort(struct scsi_device *sdev, void *data) +{ + scsi_chg_noretries_abort_io_device(sdev, *(bool *)data); +} + +static int +target_chg_noretries_abort(struct device *dev, void *data) +{ + if (scsi_is_target_device(dev)) + starget_for_each_device(to_scsi_target(dev), data, + device_chg_noretries_abort); + return 0; +} + +static void scsi_target_chg_noretries_abort(struct device *dev, bool set) +{ + if (scsi_is_target_device(dev)) + starget_for_each_device(to_scsi_target(dev), &set, + device_chg_noretries_abort); + else + device_for_each_child(dev, &set, target_chg_noretries_abort); +} + +/* + * Sets port_state to Marginal/Online. + * On Marginal it Sets no retries on abort in scmd->state for all + * outstanding io of all the scsi_devs + * This only allows ONLINE->MARGINAL and MARGINAL->ONLINE + */ +static ssize_t fc_rport_set_marginal_state(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + struct fc_rport *rport = transport_class_to_rport(dev); + enum fc_port_state port_state; + int ret = 0; + + ret = get_fc_port_state_match(buf, &port_state); + + if (port_state == FC_PORTSTATE_MARGINAL) { + /* + * Change the state to marginal only if the + * current rport state is Online + * Allow only Online->marginal + */ + if (rport->port_state == FC_PORTSTATE_ONLINE) { + rport->port_state = port_state; + scsi_target_chg_noretries_abort(&rport->dev, 1); + } + } else if (port_state == FC_PORTSTATE_ONLINE) { + /* + * Change the state to Online only if the + * current rport state is Marginal + * Allow only MArginal->Online + */ + if (rport->port_state == FC_PORTSTATE_MARGINAL) { + rport->port_state = port_state; + scsi_target_chg_noretries_abort(&rport->dev, 0); + } + } else + return -EINVAL; + return count; +} + +static ssize_t +show_fc_rport_port_state(struct device *dev, + struct device_attribute *attr, char *buf) +{ + const char *name; + struct fc_rport *rport = transport_class_to_rport(dev); + + name = get_fc_port_state_name(rport->port_state); + if (!name) + return -EINVAL; + + return snprintf(buf, 20, "%s\n", name); +} + +static FC_DEVICE_ATTR(rport, port_state, 0444 | 0200, + show_fc_rport_port_state, fc_rport_set_marginal_state); + fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); /* @@ -2266,7 +2347,7 @@ fc_attach_transport(struct fc_function_template *ft) SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); - SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); + SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(port_state); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); -- 2.26.2 --000000000000998b4005b1b3025b Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIIQTQYJKoZIhvcNAQcCoIIQPjCCEDoCAQExDzANBglghkgBZQMEAgEFADALBgkqhkiG9w0BBwGg gg2iMIIE6DCCA9CgAwIBAgIOSBtqCRO9gCTKXSLwFPMwDQYJKoZIhvcNAQELBQAwTDEgMB4GA1UE 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