From nobody Wed Feb 11 06:54:07 2026 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C70798002A for ; Mon, 29 Jul 2024 05:22:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.133.124 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722230532; cv=none; b=uHCBdgrAXuMFnhp1cHm4lzhBS3eYbJe38ghzis5GvT2aO44wOC0dRl93c0LkaG/RgWzU2vA2PekBmPSsX6vYzg/N8aWsawrU0u/yDGGky4aio2eIkLIeROix40sMtb74ycloarGgIhG8wZDnDjd0GB3J8gR1szj/c6WXoIW7co0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722230532; c=relaxed/simple; bh=FqGoL1gIrG+6pQBWKG7TqPWVrmXfXg8wT0MmB/exNU0=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rRJBco46gwutDqgh8Hw0Gcz7bgSiw7gohNZVTk3HWy+PYrCtdd9eflM4J/rYon4LK/Mb7t3oSJZT8afF7rblXgjIamdYmjfxLTYHo+axP9qkYS0DRmMg/ZFvleMUhaWR01Y+8CQsJMIO0X7YMVELjV/bSKbtadjJtjZFE3ooQws= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=A1tUmCuk; arc=none smtp.client-ip=170.10.133.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="A1tUmCuk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1722230529; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=KaDV7paMve8+TDjLvnzLCW3finEF8AmwpTegyY1jZGA=; b=A1tUmCuk8jpGDOKluxWd/CZm/8TSuVvfPujj62BL6/Lp1xTRHRyrF7BOZAZzG9ui7OEBpZ p8I7BJ4RRibovhDjEZPoDJZpVAocfpPuYCxAkjlrhRpB10MWDB20b8/v9XFHPfpHw7JLKC Hh+S/U7c3i7/Lf0heHaKoDp84C0slj4= Received: from mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-46-4q3-DfTlNDiLk3Kg7TdA7g-1; Mon, 29 Jul 2024 01:22:04 -0400 X-MC-Unique: 4q3-DfTlNDiLk3Kg7TdA7g-1 Received: from mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.40]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8DA2E1944B32; Mon, 29 Jul 2024 05:22:03 +0000 (UTC) Received: from server.redhat.com (unknown [10.72.112.168]) by mx-prod-int-04.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 9231A195605F; Mon, 29 Jul 2024 05:21:58 +0000 (UTC) From: Cindy Lu To: lulu@redhat.com, dtatulea@nvidia.com, mst@redhat.com, jasowang@redhat.com, parav@nvidia.com, sgarzare@redhat.com, netdev@vger.kernel.org, virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH v7 1/3] vdpa: support set mac address from vdpa tool Date: Mon, 29 Jul 2024 13:20:45 +0800 Message-ID: <20240729052146.621924-2-lulu@redhat.com> In-Reply-To: <20240729052146.621924-1-lulu@redhat.com> References: <20240729052146.621924-1-lulu@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.0 on 10.30.177.40 Content-Type: text/plain; charset="utf-8" Add new UAPI to support the mac address from vdpa tool Function vdpa_nl_cmd_dev_attr_set_doit() will get the new MAC address from the vdpa tool and then set it to the device. The usage is: vdpa dev set name vdpa_name mac **:**:**:**:**:** Here is example: root@L1# vdpa -jp dev config show vdpa0 { "config": { "vdpa0": { "mac": "82:4d:e9:5d:d7:e6", "link ": "up", "link_announce ": false, "mtu": 1500 } } } root@L1# vdpa dev set name vdpa0 mac 00:11:22:33:44:55 root@L1# vdpa -jp dev config show vdpa0 { "config": { "vdpa0": { "mac": "00:11:22:33:44:55", "link ": "up", "link_announce ": false, "mtu": 1500 } } } Signed-off-by: Cindy Lu --- drivers/vdpa/vdpa.c | 80 +++++++++++++++++++++++++++++++++++++++ include/linux/vdpa.h | 9 +++++ include/uapi/linux/vdpa.h | 1 + 3 files changed, 90 insertions(+) diff --git a/drivers/vdpa/vdpa.c b/drivers/vdpa/vdpa.c index 8d391947eb8d..7d16f62540ed 100644 --- a/drivers/vdpa/vdpa.c +++ b/drivers/vdpa/vdpa.c @@ -1361,6 +1361,81 @@ static int vdpa_nl_cmd_dev_config_get_doit(struct sk= _buff *skb, struct genl_info return err; } =20 +static int vdpa_dev_net_device_attr_set(struct vdpa_device *vdev, + struct genl_info *info) +{ + struct vdpa_dev_set_config set_config =3D {}; + struct vdpa_mgmt_dev *mdev =3D vdev->mdev; + struct nlattr **nl_attrs =3D info->attrs; + const u8 *macaddr; + int err =3D -EINVAL; + + down_write(&vdev->cf_lock); + if (nl_attrs[VDPA_ATTR_DEV_NET_CFG_MACADDR]) { + set_config.mask |=3D BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MACADDR); + macaddr =3D nla_data(nl_attrs[VDPA_ATTR_DEV_NET_CFG_MACADDR]); + + if (is_valid_ether_addr(macaddr)) { + ether_addr_copy(set_config.net.mac, macaddr); + memcpy(set_config.net.mac, macaddr, ETH_ALEN); + if (mdev->ops->dev_set_attr) { + err =3D mdev->ops->dev_set_attr(mdev, vdev, + &set_config); + } else { + NL_SET_ERR_MSG_FMT_MOD(info->extack, + "device does not support changing the MAC address"); + } + } else { + NL_SET_ERR_MSG_FMT_MOD(info->extack, + "Invalid MAC address"); + } + } + up_write(&vdev->cf_lock); + return err; +} + +static int vdpa_nl_cmd_dev_attr_set_doit(struct sk_buff *skb, + struct genl_info *info) +{ + struct vdpa_device *vdev; + struct device *dev; + const char *name; + u64 classes; + int err =3D 0; + + if (!info->attrs[VDPA_ATTR_DEV_NAME]) + return -EINVAL; + + name =3D nla_data(info->attrs[VDPA_ATTR_DEV_NAME]); + + down_write(&vdpa_dev_lock); + dev =3D bus_find_device(&vdpa_bus, NULL, name, vdpa_name_match); + if (!dev) { + NL_SET_ERR_MSG_MOD(info->extack, "device not found"); + err =3D -ENODEV; + goto dev_err; + } + vdev =3D container_of(dev, struct vdpa_device, dev); + if (!vdev->mdev) { + NL_SET_ERR_MSG_MOD(info->extack, "unmanaged vdpa device"); + err =3D -EINVAL; + goto mdev_err; + } + classes =3D vdpa_mgmtdev_get_classes(vdev->mdev, NULL); + if (classes & BIT_ULL(VIRTIO_ID_NET)) { + err =3D vdpa_dev_net_device_attr_set(vdev, info); + } else { + NL_SET_ERR_MSG_FMT_MOD(info->extack, "%s device not supported", + name); + } + +mdev_err: + put_device(dev); +dev_err: + up_write(&vdpa_dev_lock); + return err; +} + static int vdpa_dev_config_dump(struct device *dev, void *data) { struct vdpa_device *vdev =3D container_of(dev, struct vdpa_device, dev); @@ -1497,6 +1572,11 @@ static const struct genl_ops vdpa_nl_ops[] =3D { .doit =3D vdpa_nl_cmd_dev_stats_get_doit, .flags =3D GENL_ADMIN_PERM, }, + { + .cmd =3D VDPA_CMD_DEV_ATTR_SET, + .doit =3D vdpa_nl_cmd_dev_attr_set_doit, + .flags =3D GENL_ADMIN_PERM, + }, }; =20 static struct genl_family vdpa_nl_family __ro_after_init =3D { diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 7977ca03ac7a..2e7a30fe6b92 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -582,11 +582,20 @@ void vdpa_set_status(struct vdpa_device *vdev, u8 sta= tus); * @dev: vdpa device to remove * Driver need to remove the specified device by calling * _vdpa_unregister_device(). + * @dev_set_attr: change a vdpa device's attr after it was create + * @mdev: parent device to use for device + * @dev: vdpa device structure + * @config:Attributes to be set for the device. + * The driver needs to check the mask of the structure and then set + * the related information to the vdpa device. The driver must return= 0 + * if set successfully. */ struct vdpa_mgmtdev_ops { int (*dev_add)(struct vdpa_mgmt_dev *mdev, const char *name, const struct vdpa_dev_set_config *config); void (*dev_del)(struct vdpa_mgmt_dev *mdev, struct vdpa_device *dev); + int (*dev_set_attr)(struct vdpa_mgmt_dev *mdev, struct vdpa_device *dev, + const struct vdpa_dev_set_config *config); }; =20 /** diff --git a/include/uapi/linux/vdpa.h b/include/uapi/linux/vdpa.h index 842bf1201ac4..71edf2c70cc3 100644 --- a/include/uapi/linux/vdpa.h +++ b/include/uapi/linux/vdpa.h @@ -19,6 +19,7 @@ enum vdpa_command { VDPA_CMD_DEV_GET, /* can dump */ VDPA_CMD_DEV_CONFIG_GET, /* can dump */ VDPA_CMD_DEV_VSTATS_GET, + VDPA_CMD_DEV_ATTR_SET, }; =20 enum vdpa_attr { --=20 2.45.0