diff options
| author | Ben Greear <greearb@candelatech.com> | 2012-02-11 15:40:01 +0000 |
|---|---|---|
| committer | Jeff Kirsher <jeffrey.t.kirsher@intel.com> | 2012-02-24 01:45:57 -0800 |
| commit | 11a78dcf35fc20bd6ae57fee11ca0447a62d33a8 (patch) | |
| tree | bcf704aec2a4d56152bc4b14fc49fd9e52805bcc /drivers/net/ethernet/intel | |
| parent | cf955e6c96cb9af2dce7093a8e3a5e808555c8a4 (diff) | |
e1000: Support sending custom Ethernet CRC.
Good for testing the RX logic for bad CRC handling.
Signed-off-by: Ben Greear <greearb@candelatech.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel')
| -rw-r--r-- | drivers/net/ethernet/intel/e1000/e1000_main.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c index e72dc8175955..bd1d28f4cc9a 100644 --- a/drivers/net/ethernet/intel/e1000/e1000_main.c +++ b/drivers/net/ethernet/intel/e1000/e1000_main.c @@ -1067,6 +1067,8 @@ static int __devinit e1000_probe(struct pci_dev *pdev, (hw->mac_type != e1000_82547)) netdev->hw_features |= NETIF_F_TSO; + netdev->priv_flags |= IFF_SUPP_NOFCS; + netdev->features |= netdev->hw_features; netdev->hw_features |= NETIF_F_RXCSUM; @@ -2692,6 +2694,7 @@ set_itr_now: #define E1000_TX_FLAGS_VLAN 0x00000002 #define E1000_TX_FLAGS_TSO 0x00000004 #define E1000_TX_FLAGS_IPV4 0x00000008 +#define E1000_TX_FLAGS_NO_FCS 0x00000010 #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 #define E1000_TX_FLAGS_VLAN_SHIFT 16 @@ -2993,6 +2996,9 @@ static void e1000_tx_queue(struct e1000_adapter *adapter, txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); } + if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) + txd_lower &= ~(E1000_TXD_CMD_IFCS); + i = tx_ring->next_to_use; while (count--) { @@ -3007,6 +3013,10 @@ static void e1000_tx_queue(struct e1000_adapter *adapter, tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); + /* txd_cmd re-enables FCS, so we'll re-disable it here as desired. */ + if (unlikely(tx_flags & E1000_TX_FLAGS_NO_FCS)) + tx_desc->lower.data &= ~(cpu_to_le32(E1000_TXD_CMD_IFCS)); + /* Force memory writes to complete before letting h/w * know there are new descriptors to fetch. (Only * applicable for weak-ordered memory model archs, @@ -3222,6 +3232,9 @@ static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, if (likely(skb->protocol == htons(ETH_P_IP))) tx_flags |= E1000_TX_FLAGS_IPV4; + if (unlikely(skb->no_fcs)) + tx_flags |= E1000_TX_FLAGS_NO_FCS; + count = e1000_tx_map(adapter, tx_ring, skb, first, max_per_txd, nr_frags, mss); |