Received: by 2002:a25:8b12:0:0:0:0:0 with SMTP id i18csp4654585ybl; Mon, 26 Aug 2019 13:50:46 -0700 (PDT) X-Google-Smtp-Source: APXvYqxxmFkaTD66gW4Jt8NVlj9EILDw9UrRC86Pk1MVoGCK4GwKCE4hikAHCki2xoLAjKEnVQpe X-Received: by 2002:a65:6152:: with SMTP id o18mr17482836pgv.279.1566852646164; Mon, 26 Aug 2019 13:50:46 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1566852646; cv=none; d=google.com; s=arc-20160816; b=bEjYyt4RUycletBtcfGiIWqPK1DhajIEQdrMz4oA/NbTsj7gyqDliDIYwxV+BBbDEC OsJtbvuiuQq+bfxMk0Q+fDdSF0ZRvquqPx8+UjHwSVQbvSLWffbD4vKzwyp2HWBfEg4l 8ASklDowdo49s1kL3fjwcjWjVoWd4FouFL0qgQbgrf5YuMfjEoz4/sM9JbND0EWVusTq ergTLbTmvBuyfS1Sd8EvmhtTDpQcqpzJtHPKwlbKpW8E7eKvMaQAk3tqd/Uaoqqnd6c/ 9LDlDTUNi3TP88M4Modva/vVQTH6C3UuPDnH12fuENIr4GlJbL6hrsAaeB4LV+0e9D8M 0sBQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=yBx4LJsPK+Zh97hNp9X8jgkboSM2cf4xWEDYbToPYzU=; b=DqGJU0yXzrns3GwnJ9kOJXGierJDINMKnLYtllDOCPtgaXu9RC16oEvjtJZ6Dld5Ze FJFTaqz540aB1958Ft/B+nX4YTyP4nEsEIwlIvnyiAihWfutqlkirqdOSwONAIMysSS8 SKtGCc6oRfcddGFm4+T+iqwdsUTOeIyifXDNYUR8ZwIZordijlJw22S3GCK8qcJ+Kab8 w0EXgLyyCR1HklmbnzmCiApPxhuJil8fl8i5/23XpytMOHGtwnZy73W6ihyo3MA950K/ 5vRHRYKcwWVKJYmaF0PeLuO3z3zdJFF/lixPahbQeXRDOxg4K7mQ6uXB0HcEtqvHqcto SdxA== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mellanox.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id t15si9507669pgv.546.2019.08.26.13.50.30; Mon, 26 Aug 2019 13:50:46 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=mellanox.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729951AbfHZUll (ORCPT + 99 others); Mon, 26 Aug 2019 16:41:41 -0400 Received: from mail-il-dmz.mellanox.com ([193.47.165.129]:37906 "EHLO mellanox.co.il" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1729595AbfHZUlj (ORCPT ); Mon, 26 Aug 2019 16:41:39 -0400 Received: from Internal Mail-Server by MTLPINE1 (envelope-from parav@mellanox.com) with ESMTPS (AES256-SHA encrypted); 26 Aug 2019 23:41:35 +0300 Received: from sw-mtx-036.mtx.labs.mlnx (sw-mtx-036.mtx.labs.mlnx [10.12.150.149]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id x7QKfPDR021168; Mon, 26 Aug 2019 23:41:32 +0300 From: Parav Pandit To: alex.williamson@redhat.com, jiri@mellanox.com, kwankhede@nvidia.com, cohuck@redhat.com, davem@davemloft.net Cc: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, Parav Pandit Subject: [PATCH 3/4] mdev: Expose mdev alias in sysfs tree Date: Mon, 26 Aug 2019 15:41:18 -0500 Message-Id: <20190826204119.54386-4-parav@mellanox.com> X-Mailer: git-send-email 2.19.2 In-Reply-To: <20190826204119.54386-1-parav@mellanox.com> References: <20190826204119.54386-1-parav@mellanox.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Expose mdev alias as string in a sysfs tree so that such attribute can be used to generate netdevice name by systemd/udev or can be used to match other kernel objects based on the alias of the mdev. Signed-off-by: Parav Pandit --- drivers/vfio/mdev/mdev_sysfs.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/vfio/mdev/mdev_sysfs.c b/drivers/vfio/mdev/mdev_sysfs.c index 43afe0e80b76..59f4e3cc5233 100644 --- a/drivers/vfio/mdev/mdev_sysfs.c +++ b/drivers/vfio/mdev/mdev_sysfs.c @@ -246,7 +246,20 @@ static ssize_t remove_store(struct device *dev, struct device_attribute *attr, static DEVICE_ATTR_WO(remove); +static ssize_t alias_show(struct device *device, + struct device_attribute *attr, char *buf) +{ + struct mdev_device *dev = mdev_from_dev(device); + + if (!dev->alias) + return -EOPNOTSUPP; + + return sprintf(buf, "%s\n", dev->alias); +} +static DEVICE_ATTR_RO(alias); + static const struct attribute *mdev_device_attrs[] = { + &dev_attr_alias.attr, &dev_attr_remove.attr, NULL, }; -- 2.19.2