From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753817AbdFEQ3d (ORCPT ); Mon, 5 Jun 2017 12:29:33 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:59932 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751942AbdFEQ3b (ORCPT ); Mon, 5 Jun 2017 12:29:31 -0400 From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Jason Wang , "Michael S. Tsirkin" , Vladislav Yasevich , "David S. Miller" Subject: [PATCH 4.11 033/115] virtio-net: enable TSO/checksum offloads for Q-in-Q vlans Date: Mon, 5 Jun 2017 18:17:06 +0200 Message-Id: <20170605153058.292575681@linuxfoundation.org> X-Mailer: git-send-email 2.13.0 In-Reply-To: <20170605153056.650217313@linuxfoundation.org> References: <20170605153056.650217313@linuxfoundation.org> User-Agent: quilt/0.65 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.11-stable review patch. If anyone has any objections, please let me know. ------------------ From: Vlad Yasevich [ Upstream commit 2836b4f224d4fd7d1a2b23c3eecaf0f0ae199a74 ] Since virtio does not provide it's own ndo_features_check handler, TSO, and now checksum offload, are disabled for stacked vlans. Re-enable the support and let the host take care of it. This restores/improves Guest-to-Guest performance over Q-in-Q vlans. Acked-by: Jason Wang Acked-by: Michael S. Tsirkin Signed-off-by: Vladislav Yasevich Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- drivers/net/virtio_net.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/net/virtio_net.c +++ b/drivers/net/virtio_net.c @@ -1894,6 +1894,7 @@ static const struct net_device_ops virtn .ndo_poll_controller = virtnet_netpoll, #endif .ndo_xdp = virtnet_xdp, + .ndo_features_check = passthru_features_check, }; static void virtnet_config_changed_work(struct work_struct *work)