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=-17.2 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_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 0EE65C2BBCA for ; Wed, 16 Dec 2020 12:24:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D232423123 for ; Wed, 16 Dec 2020 12:24:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1725945AbgLPMYI (ORCPT ); Wed, 16 Dec 2020 07:24:08 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48980 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725385AbgLPMYI (ORCPT ); Wed, 16 Dec 2020 07:24:08 -0500 Received: from mail-pf1-x42f.google.com (mail-pf1-x42f.google.com [IPv6:2607:f8b0:4864:20::42f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4D21FC061282 for ; Wed, 16 Dec 2020 04:22:58 -0800 (PST) Received: by mail-pf1-x42f.google.com with SMTP id t8so16489662pfg.8 for ; Wed, 16 Dec 2020 04:22:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=broadcom.com; s=google; h=mime-version:from:to:cc:subject:date:message-id:in-reply-to :references; bh=8rxhI7YUg8IkvGmlLzdfqofHE1JNNxW4E5HwkHULBVM=; b=Y5MGQcTgi4eKhCtI723qZBfv+5frh/DMxnx0byaT/dXgiPyI+Oadq3OfIZpTOM6A4n JXfSiR0eJLZ6czxkmUOPWIt4PA/NbbVTSKv1mCE4L/Cn2EZ0g01VuXiVq4V1Iz0Uk0P0 Fsk7otqJ4R7z8GsaKhCwKWZimTy6v5IjaNHOY= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :in-reply-to:references; bh=8rxhI7YUg8IkvGmlLzdfqofHE1JNNxW4E5HwkHULBVM=; b=oFmUDYckEtLAa2wNw3cmPNI1eL+eBLkIKU+Kkm/GJ/dBh+/yJf9IKrDkXXW+CKfZKe 5VeBvgP8DMdYdMiYpNw9SWwN0Qv9TfbFAx/bTmhKjrVfiPOx8zLQwAtQZtHk+bFgQjRh WuP7NKAJw44VvBuGTUkHrNoYnfyY0TH4p8iLUU7WfQ4dbTNW1F9uS+BBP8zFWWYBnBsz 7jTU+n1UDTHBfKm5thY39ppzs3zj1zWiwgYUmtROvMJxmbkHtHDEwmR8BDUAbrs9e+VF 5FMM4qFEiDPkNm9D98Aoa2KRnsyr7KodjojFgFvrwHMHSrsV/72W81igjLOA2+/tPviQ eZtg== MIME-Version: 1.0 X-Gm-Message-State: AOAM532oUOCAMkUsU3YnbC14E/igTOYQHXkCXsq0ky4jCTlK1/9z8abY Pc91aG5lP6iENPwpqCJlfl4nL4IQJgVKKbrVYfkn477A+wT11baLG9MexBPNjjgFQwU3bKbc85p HQyG/s72TCv5gBHZ++xHxmOw= X-Google-Smtp-Source: ABdhPJxNxXr1wDwqCu55kmcD4DMmKHPiRz3q1M7dhLZnna71/m8Oim6D2lbIXvQY50VzkhYbV9CphA== X-Received: by 2002:aa7:8ac1:0:b029:19d:beff:4e0f with SMTP id b1-20020aa78ac10000b029019dbeff4e0fmr3580778pfd.0.1608121377683; Wed, 16 Dec 2020 04:22:57 -0800 (PST) Received: from localhost.localdomain ([192.19.234.250]) by smtp.gmail.com with ESMTPSA id s7sm2477296pfh.207.2020.12.16.04.22.54 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Wed, 16 Dec 2020 04:22:57 -0800 (PST) From: Muneendra To: linux-block@vger.kernel.org, linux-scsi@vger.kernel.org, tj@kernel.org, linux-nvme@lists.infradead.org, hare@suse.de Cc: jsmart2021@gmail.com, emilne@redhat.com, mkumar@redhat.com, pbonzini@redhat.com, Muneendra Subject: [PATCH v5 03/16] nvme: Added a newsysfs attribute appid_store Date: Wed, 16 Dec 2020 10:59:33 +0530 Message-Id: <1608096586-21656-4-git-send-email-muneendra.kumar@broadcom.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1608096586-21656-1-git-send-email-muneendra.kumar@broadcom.com> References: <1608096586-21656-1-git-send-email-muneendra.kumar@broadcom.com> Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha-256; boundary="0000000000007ec8ca05b693ef6a" Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org --0000000000007ec8ca05b693ef6a Content-Type: text/plain; charset="US-ASCII" Added a new sysfs attribute appid_store under /sys/class/fc/fc_udev_device/* With this new interface the user can set the application identfier in the blkcg associted with cgroup id. Once the application identifer has set with this interface it allows identification of traffic sources at an individual cgroup based Applications (ex:virtual machine (VM))level in both host and fabric infrastructure(FC). Below is the interface provided to set the app_id echo ":" >> /sys/class/fc/fc_udev_device/appid_store echo "457E:100000109b521d27" >> /sys/class/fc/fc_udev_device/appid_store Signed-off-by: Muneendra --- v5: Replaced APPID_LEN with FC_APPID_LEN v4: No change v3: Replaced blkcg_set_app_identifier function with blkcg_set_fc_appid v2: New Patch --- drivers/nvme/host/fc.c | 73 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 72 insertions(+), 1 deletion(-) diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c index 3c002bdcace3..ed689ba773b1 100644 --- a/drivers/nvme/host/fc.c +++ b/drivers/nvme/host/fc.c @@ -9,7 +9,7 @@ #include #include #include - +#include #include "nvme.h" #include "fabrics.h" #include @@ -3821,10 +3821,81 @@ static ssize_t nvme_fc_nvme_discovery_store(struct device *dev, return count; } + +/*parse the Cgroup id from a buf and returns the length of cgrpid*/ +static int fc_parse_cgrpid(const char *buf, u64 *id) +{ + char cgrp_id[16+1]; + int cgrpid_len, j; + + memset(cgrp_id, 0x0, sizeof(cgrp_id)); + for (cgrpid_len = 0, j = 0; cgrpid_len < 17; cgrpid_len++) { + if (buf[cgrpid_len] != ':') + cgrp_id[cgrpid_len] = buf[cgrpid_len]; + else { + j = 1; + break; + } + } + if (!j) + return -EINVAL; + if (kstrtou64(cgrp_id, 16, id) < 0) + return -EINVAL; + return cgrpid_len; +} + +/* + * fc_update_appid :parses and updates the appid in the blkcg associated with + * cgroupid. + * @buf: buf contains both cgrpid and appid info + * @count: size of the buffer + */ +static int fc_update_appid(const char *buf, size_t count) +{ + u64 cgrp_id; + int appid_len = 0; + int cgrpid_len = 0; + char app_id[FC_APPID_LEN]; + int ret = 0; + + if (buf[count-1] == '\n') + count--; + + if ((count > (16+1+FC_APPID_LEN)) || (!strchr(buf, ':'))) + return -EINVAL; + + cgrpid_len = fc_parse_cgrpid(buf, &cgrp_id); + if (cgrpid_len < 0) + return -EINVAL; + /*appid len is count - cgrpid_len -1 (: + \n) */ + appid_len = count - cgrpid_len - 1; + if (appid_len > FC_APPID_LEN) + return -EINVAL; + + memset(app_id, 0x0, sizeof(app_id)); + memcpy(app_id, &buf[cgrpid_len+1], appid_len); + ret = blkcg_set_fc_appid(app_id, cgrp_id, sizeof(app_id)); + if (ret < 0) + return ret; + return count; +} + +static ssize_t fc_appid_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + int ret = 0; + + ret = fc_update_appid(buf, count); + if (ret < 0) + return -EINVAL; + return count; +} static DEVICE_ATTR(nvme_discovery, 0200, NULL, nvme_fc_nvme_discovery_store); +static DEVICE_ATTR(appid_store, 0200, NULL, fc_appid_store); static struct attribute *nvme_fc_attrs[] = { &dev_attr_nvme_discovery.attr, + &dev_attr_appid_store.attr, NULL }; -- 2.26.2 -- This electronic communication and the information and any files transmitted with it, or attached to it, are confidential and are intended solely for the use of the individual or entity to whom it is addressed and may contain information that is confidential, legally privileged, protected by privacy laws, or otherwise restricted from disclosure to anyone else. If you are not the intended recipient or the person responsible for delivering the e-mail to the intended recipient, you are hereby notified that any use, copying, distributing, dissemination, forwarding, printing, or copying of this e-mail is strictly prohibited. If you received this e-mail in error, please return the e-mail to the sender, delete it from your computer, and destroy any printed copy of it. --0000000000007ec8ca05b693ef6a 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 CxMXR2xvYmFsU2lnbiBSb290IENBIC0gUjMxEzARBgNVBAoTCkdsb2JhbFNpZ24xEzARBgNVBAMT Ckdsb2JhbFNpZ24wHhcNMTYwNjE1MDAwMDAwWhcNMjQwNjE1MDAwMDAwWjBdMQswCQYDVQQGEwJC RTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTEzMDEGA1UEAxMqR2xvYmFsU2lnbiBQZXJzb25h bFNpZ24gMiBDQSAtIFNIQTI1NiAtIEczMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEA tpZok2X9LAHsYqMNVL+Ly6RDkaKar7GD8rVtb9nw6tzPFnvXGeOEA4X5xh9wjx9sScVpGR5wkTg1 fgJIXTlrGESmaqXIdPRd9YQ+Yx9xRIIIPu3Jp/bpbiZBKYDJSbr/2Xago7sb9nnfSyjTSnucUcIP ZVChn6hKneVGBI2DT9yyyD3PmCEJmEzA8Y96qT83JmVH2GaPSSbCw0C+Zj1s/zqtKUbwE5zh8uuZ p4vC019QbaIOb8cGlzgvTqGORwK0gwDYpOO6QQdg5d03WvIHwTunnJdoLrfvqUg2vOlpqJmqR+nH 9lHS+bEstsVJtZieU1Pa+3LzfA/4cT7XA/pnwwIDAQABo4IBtTCCAbEwDgYDVR0PAQH/BAQDAgEG MGoGA1UdJQRjMGEGCCsGAQUFBwMCBggrBgEFBQcDBAYIKwYBBQUHAwkGCisGAQQBgjcUAgIGCisG AQQBgjcKAwQGCSsGAQQBgjcVBgYKKwYBBAGCNwoDDAYIKwYBBQUHAwcGCCsGAQUFBwMRMBIGA1Ud EwEB/wQIMAYBAf8CAQAwHQYDVR0OBBYEFGlygmIxZ5VEhXeRgMQENkmdewthMB8GA1UdIwQYMBaA FI/wS3+oLkUkrk1Q+mOai97i3Ru8MD4GCCsGAQUFBwEBBDIwMDAuBggrBgEFBQcwAYYiaHR0cDov L29jc3AyLmdsb2JhbHNpZ24uY29tL3Jvb3RyMzA2BgNVHR8ELzAtMCugKaAnhiVodHRwOi8vY3Js Lmdsb2JhbHNpZ24uY29tL3Jvb3QtcjMuY3JsMGcGA1UdIARgMF4wCwYJKwYBBAGgMgEoMAwGCisG AQQBoDIBKAowQQYJKwYBBAGgMgFfMDQwMgYIKwYBBQUHAgEWJmh0dHBzOi8vd3d3Lmdsb2JhbHNp Z24uY29tL3JlcG9zaXRvcnkvMA0GCSqGSIb3DQEBCwUAA4IBAQConc0yzHxn4gtQ16VccKNm4iXv 6rS2UzBuhxI3XDPiwihW45O9RZXzWNgVcUzz5IKJFL7+pcxHvesGVII+5r++9eqI9XnEKCILjHr2 DgvjKq5Jmg6bwifybLYbVUoBthnhaFB0WLwSRRhPrt5eGxMw51UmNICi/hSKBKsHhGFSEaJQALZy 4HL0EWduE6ILYAjX6BSXRDtHFeUPddb46f5Hf5rzITGLsn9BIpoOVrgS878O4JnfUWQi29yBfn75 HajifFvPC+uqn+rcVnvrpLgsLOYG/64kWX/FRH8+mhVe+mcSX3xsUpcxK9q9vLTVtroU/yJUmEC4 OcH5dQsbHBqjMIIDXzCCAkegAwIBAgILBAAAAAABIVhTCKIwDQYJKoZIhvcNAQELBQAwTDEgMB4G A1UECxMXR2xvYmFsU2lnbiBSb290IENBIC0gUjMxEzARBgNVBAoTCkdsb2JhbFNpZ24xEzARBgNV BAMTCkdsb2JhbFNpZ24wHhcNMDkwMzE4MTAwMDAwWhcNMjkwMzE4MTAwMDAwWjBMMSAwHgYDVQQL ExdHbG9iYWxTaWduIFJvb3QgQ0EgLSBSMzETMBEGA1UEChMKR2xvYmFsU2lnbjETMBEGA1UEAxMK R2xvYmFsU2lnbjCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMwldpB5BngiFvXAg7aE yiie/QV2EcWtiHL8RgJDx7KKnQRfJMsuS+FggkbhUqsMgUdwbN1k0ev1LKMPgj0MK66X17YUhhB5 uzsTgHeMCOFJ0mpiLx9e+pZo34knlTifBtc+ycsmWQ1z3rDI6SYOgxXG71uL0gRgykmmKPZpO/bL yCiR5Z2KYVc3rHQU3HTgOu5yLy6c+9C7v/U9AOEGM+iCK65TpjoWc4zdQQ4gOsC0p6Hpsk+QLjJg 6VfLuQSSaGjlOCZgdbKfd/+RFO+uIEn8rUAVSNECMWEZXriX7613t2Saer9fwRPvm2L7DWzgVGkW qQPabumDk3F2xmmFghcCAwEAAaNCMEAwDgYDVR0PAQH/BAQDAgEGMA8GA1UdEwEB/wQFMAMBAf8w HQYDVR0OBBYEFI/wS3+oLkUkrk1Q+mOai97i3Ru8MA0GCSqGSIb3DQEBCwUAA4IBAQBLQNvAUKr+ yAzv95ZURUm7lgAJQayzE4aGKAczymvmdLm6AC2upArT9fHxD4q/c2dKg8dEe3jgr25sbwMpjjM5 RcOO5LlXbKr8EpbsU8Yt5CRsuZRj+9xTaGdWPoO4zzUhw8lo/s7awlOqzJCK6fBdRoyV3XpYKBov Hd7NADdBj+1EbddTKJd+82cEHhXXipa0095MJ6RMG3NzdvQXmcIfeg7jLQitChws/zyrVQ4PkX42 68NXSb7hLi18YIvDQVETI53O9zJrlAGomecsMx86OyXShkDOOyyGeMlhLxS67ttVb9+E7gUJTb0o 2HLO02JQZR7rkpeDMdmztcpHWD9fMIIFTzCCBDegAwIBAgIMX/krgFDQUQNyOf+1MA0GCSqGSIb3 DQEBCwUAMF0xCzAJBgNVBAYTAkJFMRkwFwYDVQQKExBHbG9iYWxTaWduIG52LXNhMTMwMQYDVQQD EypHbG9iYWxTaWduIFBlcnNvbmFsU2lnbiAyIENBIC0gU0hBMjU2IC0gRzMwHhcNMjAwOTA0MDgz NTI5WhcNMjIwOTA1MDgzNTI5WjCBljELMAkGA1UEBhMCSU4xEjAQBgNVBAgTCUthcm5hdGFrYTES MBAGA1UEBxMJQmFuZ2Fsb3JlMRYwFAYDVQQKEw1Ccm9hZGNvbSBJbmMuMRowGAYDVQQDExFNdW5l ZW5kcmEgS3VtYXIgTTErMCkGCSqGSIb3DQEJARYcbXVuZWVuZHJhLmt1bWFyQGJyb2FkY29tLmNv bTCCASIwDQYJKoZIhvcNAQEBBQADggEPADCCAQoCggEBAMoadg8/B0JvnQVWQZyfiiEMmDhh0bSq BIThkSCjIdy7yOV9fBOs6MdrPZgCDeX5rJvOw6PJiWjeQQ9RkTJH6WccvxwXugoyspkG/RfFdUKk t0/bk1Ml9aUobcee2+cC79gyzwpHUjzEpcsx49FskGIxI+n9wybrDhpurtj8mmc1C1sVzKNoIEwC /eHrCsDnag9JEGotxVVv0KcLXv7N0CXs03bP8uvocms3+gO1K8dasJkc7noMt/i0/xcZnaABWkgV J/4V6ms/nIUi+/4vPYjckYUbRzkXm1/X0IyUfpp5cgdrFn9jBIk69fQGAUEhnVvwcXnHWotYxZFd Xew5Fz0CAwEAAaOCAdMwggHPMA4GA1UdDwEB/wQEAwIFoDCBngYIKwYBBQUHAQEEgZEwgY4wTQYI KwYBBQUHMAKGQWh0dHA6Ly9zZWN1cmUuZ2xvYmFsc2lnbi5jb20vY2FjZXJ0L2dzcGVyc29uYWxz aWduMnNoYTJnM29jc3AuY3J0MD0GCCsGAQUFBzABhjFodHRwOi8vb2NzcDIuZ2xvYmFsc2lnbi5j b20vZ3NwZXJzb25hbHNpZ24yc2hhMmczME0GA1UdIARGMEQwQgYKKwYBBAGgMgEoCjA0MDIGCCsG AQUFBwIBFiZodHRwczovL3d3dy5nbG9iYWxzaWduLmNvbS9yZXBvc2l0b3J5LzAJBgNVHRMEAjAA MEQGA1UdHwQ9MDswOaA3oDWGM2h0dHA6Ly9jcmwuZ2xvYmFsc2lnbi5jb20vZ3NwZXJzb25hbHNp Z24yc2hhMmczLmNybDAnBgNVHREEIDAegRxtdW5lZW5kcmEua3VtYXJAYnJvYWRjb20uY29tMBMG A1UdJQQMMAoGCCsGAQUFBwMEMB8GA1UdIwQYMBaAFGlygmIxZ5VEhXeRgMQENkmdewthMB0GA1Ud DgQWBBR6On9cEmlB2VsuST951zNMSKtFBzANBgkqhkiG9w0BAQsFAAOCAQEAOGDBLQ17Ge8BVULh hsKhgh5eDx0mNmRRdhvTJnxOTRX5QsOKvsJGOUbyrKjD3BTTcGmIUti9HmbqDe/3gRTbhu8LA508 LbMkW5lUoTb8ycBNOKLYhNE8UEOY8jRTUtMEhzT6NJDEE+1hb3kSGfArrrF3Z8pRYiUUhcpC5GKL 9KsxA+DECRfSGfXJJQSq6nEZUGKhz+dz5CV1s8UIZLe9HEEfyJO4eRP+Fw9X16cthAbY0kpVnAvT /j45FAauY/h87uphdvSb5wC9v5w4VO0JKs0yNUjyWXg/RG+6JCvcViLFLAlRCLrcRcVaQwWZQ3YB EpmWnHflnrBcah5Ozy137DGCAm8wggJrAgEBMG0wXTELMAkGA1UEBhMCQkUxGTAXBgNVBAoTEEds b2JhbFNpZ24gbnYtc2ExMzAxBgNVBAMTKkdsb2JhbFNpZ24gUGVyc29uYWxTaWduIDIgQ0EgLSBT SEEyNTYgLSBHMwIMX/krgFDQUQNyOf+1MA0GCWCGSAFlAwQCAQUAoIHUMC8GCSqGSIb3DQEJBDEi BCCMm5DsNVw9AK3a9gCNCK4sxexLzprGxtUQBHKhY9pY1TAYBgkqhkiG9w0BCQMxCwYJKoZIhvcN AQcBMBwGCSqGSIb3DQEJBTEPFw0yMDEyMTYxMjIyNThaMGkGCSqGSIb3DQEJDzFcMFowCwYJYIZI AWUDBAEqMAsGCWCGSAFlAwQBFjALBglghkgBZQMEAQIwCgYIKoZIhvcNAwcwCwYJKoZIhvcNAQEK MAsGCSqGSIb3DQEBBzALBglghkgBZQMEAgEwDQYJKoZIhvcNAQEBBQAEggEAHkLyJWYvcUUrSySw pooiwxf5wiEm4ch+PaqbyHVaODRI+K37VNvCJGVZnRBdRAqjC3d+4mDNHB9qQio2Q3DlRf5sqken 95LES8VZnYk+BXR85p/h3x3klmOd81xDgwSxyXc7EjJkq0xdhY+q69A+mRBO7heKgHPcj3E5pm+V Ajs0pxdg+qkfBrgIAWFtvXwxpfWmM3cXQAtmDc1VxR5/gWgiW4IeT6CL1NOy1nYa8VV7KVP4mk+5 B/Mhjbm8d/ZSAK9HTZvEq4Ys3v2KOXhNoHmq8R5lPXHtbZ/HBWdc5v9yxFuKEwfr7EO5J2TfL927 VTW8b0QG0aT3PuRxPoPpwg== --0000000000007ec8ca05b693ef6a--