mirror of https://gitee.com/openkylin/linux.git
e100: Support sending custom Ethernet CRC
This can aid with testing the RX logic for bad CRCs. 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>
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@ -412,6 +412,10 @@ enum cb_status {
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cb_ok = 0x2000,
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cb_ok = 0x2000,
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};
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};
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/**
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* cb_command - Command Block flags
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* @cb_tx_nc: 0: controler does CRC (normal), 1: CRC from skb memory
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*/
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enum cb_command {
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enum cb_command {
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cb_nop = 0x0000,
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cb_nop = 0x0000,
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cb_iaaddr = 0x0001,
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cb_iaaddr = 0x0001,
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@ -421,6 +425,7 @@ enum cb_command {
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cb_ucode = 0x0005,
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cb_ucode = 0x0005,
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cb_dump = 0x0006,
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cb_dump = 0x0006,
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cb_tx_sf = 0x0008,
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cb_tx_sf = 0x0008,
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cb_tx_nc = 0x0010,
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cb_cid = 0x1f00,
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cb_cid = 0x1f00,
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cb_i = 0x2000,
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cb_i = 0x2000,
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cb_s = 0x4000,
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cb_s = 0x4000,
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@ -1724,6 +1729,16 @@ static void e100_xmit_prepare(struct nic *nic, struct cb *cb,
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struct sk_buff *skb)
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struct sk_buff *skb)
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{
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{
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cb->command = nic->tx_command;
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cb->command = nic->tx_command;
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/*
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* Use the last 4 bytes of the SKB payload packet as the CRC, used for
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* testing, ie sending frames with bad CRC.
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*/
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if (unlikely(skb->no_fcs))
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cb->command |= __constant_cpu_to_le16(cb_tx_nc);
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else
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cb->command &= ~__constant_cpu_to_le16(cb_tx_nc);
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/* interrupt every 16 packets regardless of delay */
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/* interrupt every 16 packets regardless of delay */
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if ((nic->cbs_avail & ~15) == nic->cbs_avail)
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if ((nic->cbs_avail & ~15) == nic->cbs_avail)
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cb->command |= cpu_to_le16(cb_i);
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cb->command |= cpu_to_le16(cb_i);
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@ -2778,6 +2793,7 @@ static int __devinit e100_probe(struct pci_dev *pdev,
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return -ENOMEM;
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return -ENOMEM;
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netdev->hw_features |= NETIF_F_RXFCS;
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netdev->hw_features |= NETIF_F_RXFCS;
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netdev->priv_flags |= IFF_SUPP_NOFCS;
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netdev->netdev_ops = &e100_netdev_ops;
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netdev->netdev_ops = &e100_netdev_ops;
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SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops);
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SET_ETHTOOL_OPS(netdev, &e100_ethtool_ops);
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