From mboxrd@z Thu Jan 1 00:00:00 1970 From: greearb@candelatech.com 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> Cc: jeffrey.t.kirsher@intel.com, Ben Greear To: netdev@vger.kernel.org Return-path: 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 Sender: netdev-owner@vger.kernel.org List-ID: 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 */ -- 1.7.3.4