From patchwork Wed Jan 3 00:35:37 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Samudrala, Sridhar" X-Patchwork-Id: 854797 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=netdev-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zBBmx0PYYz9s8J for ; Wed, 3 Jan 2018 11:36:01 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751156AbeACAf7 (ORCPT ); Tue, 2 Jan 2018 19:35:59 -0500 Received: from mga03.intel.com ([134.134.136.65]:3218 "EHLO mga03.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750968AbeACAfk (ORCPT ); Tue, 2 Jan 2018 19:35:40 -0500 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by orsmga103.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Jan 2018 16:35:39 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.45,499,1508828400"; d="scan'208";a="191760242" Received: from arch-p28.jf.intel.com ([10.166.187.31]) by fmsmga005.fm.intel.com with ESMTP; 02 Jan 2018 16:35:38 -0800 From: Sridhar Samudrala To: mst@redhat.com, stephen@networkplumber.org, netdev@vger.kernel.org, virtualization@lists.linux-foundation.org, virtio-dev@lists.oasis-open.org, jesse.brandeburg@intel.com, sridhar.samudrala@intel.com Subject: [PATCH net-next 1/2] virtio_net: Introduce VIRTIO_NET_F_MASTER feature bit Date: Tue, 2 Jan 2018 16:35:37 -0800 Message-Id: <1514939738-22423-2-git-send-email-sridhar.samudrala@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1514939738-22423-1-git-send-email-sridhar.samudrala@intel.com> References: <1514939738-22423-1-git-send-email-sridhar.samudrala@intel.com> Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org This feature bit can be used by hypervisor to indicate virtio_net device to act as a master for a directly attached passthru device with the same MAC address. Signed-off-by: Sridhar Samudrala --- drivers/net/virtio_net.c | 3 ++- include/uapi/linux/virtio_net.h | 1 + 2 files changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/net/virtio_net.c b/drivers/net/virtio_net.c index 6fb7b658a6cc..46844a1d9a62 100644 --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -2796,7 +2796,8 @@ static struct virtio_device_id id_table[] = { VIRTIO_NET_F_CTRL_RX, VIRTIO_NET_F_CTRL_VLAN, \ VIRTIO_NET_F_GUEST_ANNOUNCE, VIRTIO_NET_F_MQ, \ VIRTIO_NET_F_CTRL_MAC_ADDR, \ - VIRTIO_NET_F_MTU, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS + VIRTIO_NET_F_MTU, VIRTIO_NET_F_CTRL_GUEST_OFFLOADS, \ + VIRTIO_NET_F_MASTER static unsigned int features[] = { VIRTNET_FEATURES, diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h index fc353b518288..a9b4e0836786 100644 --- a/include/uapi/linux/virtio_net.h +++ b/include/uapi/linux/virtio_net.h @@ -56,6 +56,7 @@ #define VIRTIO_NET_F_MQ 22 /* Device supports Receive Flow * Steering */ #define VIRTIO_NET_F_CTRL_MAC_ADDR 23 /* Set MAC address */ +#define VIRTIO_NET_F_MASTER 62 /* act as master for a VF device */ #ifndef VIRTIO_NET_NO_LEGACY #define VIRTIO_NET_F_GSO 6 /* Host handles pkts w/ any GSO type */