From patchwork Tue Mar 6 01:30:40 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Greear X-Patchwork-Id: 144826 X-Patchwork-Delegate: davem@davemloft.net Return-Path: X-Original-To: patchwork-incoming@ozlabs.org Delivered-To: patchwork-incoming@ozlabs.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id E9582B6FA3 for ; Tue, 6 Mar 2012 12:30:50 +1100 (EST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758138Ab2CFBat (ORCPT ); Mon, 5 Mar 2012 20:30:49 -0500 Received: from mail.candelatech.com ([208.74.158.172]:57206 "EHLO ns3.lanforge.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758084Ab2CFBas (ORCPT ); Mon, 5 Mar 2012 20:30:48 -0500 Received: from fs3.candelatech.com (firewall.candelatech.com [70.89.124.249]) by ns3.lanforge.com (8.14.2/8.14.2) with ESMTP id q261UhPH008361 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 5 Mar 2012 17:30:43 -0800 From: greearb@candelatech.com To: netdev@vger.kernel.org Cc: jeffrey.t.kirsher@intel.com, Ben Greear Subject: [PATCH 1/2] igb: Support sending custom Ethernet FCS. Date: Mon, 5 Mar 2012 17:30:40 -0800 Message-Id: <1330997441-13324-1-git-send-email-greearb@candelatech.com> X-Mailer: git-send-email 1.7.3.4 Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Ben Greear Including bad FCS, used generate frames with bad FCS to test other system's handling of RX of bad packets. Signed-off-by: Ben Greear --- :100644 100644 fda8247... e4058ac... M drivers/net/ethernet/intel/igb/igb_main.c drivers/net/ethernet/intel/igb/igb_main.c | 4 ++++ 1 files changed, 4 insertions(+), 0 deletions(-) diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index fda8247..e4058ac 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -1964,6 +1964,8 @@ static int __devinit igb_probe(struct pci_dev *pdev, NETIF_F_IPV6_CSUM | NETIF_F_SG; + netdev->priv_flags |= IFF_SUPP_NOFCS; + if (pci_using_dac) { netdev->features |= NETIF_F_HIGHDMA; netdev->vlan_features |= NETIF_F_HIGHDMA; @@ -4292,6 +4294,8 @@ static void igb_tx_map(struct igb_ring *tx_ring, /* write last descriptor with RS and EOP bits */ cmd_type |= cpu_to_le32(size) | cpu_to_le32(IGB_TXD_DCMD); + if (unlikely(skb->no_fcs)) + cmd_type &= ~(cpu_to_le32(E1000_ADVTXD_DCMD_IFCS)); tx_desc->read.cmd_type_len = cmd_type; /* set the timestamp */