| ========================================================================
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| CPU Header Mode Enable or Disable
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| ========================================================================
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| This sample shows how to enable/disable header mode for CPU port.
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| For more information about header mode, please refer to 88E6063 Spec.
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| section 3.5.10 and section 3.7.5.
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| Notes:
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| When Header mode for the CPU port is enabled, Ethernet Device/Driver
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| which is directly connected to the CPU port should understand Header Format.
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| If Ethernet Device does not know about Header mode, then user may set |
| the device to Promiscuous mode in order to receive packets from switch's CPU |
| port. After that, it is Ethernet Device Driver's responsibility to handle |
| Header properly.
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| header.c
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| sampleHeaderEnable can be used to enable or disable CPU port's
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| header mode
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