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CONFIG_ARCNET_CAP: Enable CAP mode packet interface

General informations

The Linux kernel configuration item CONFIG_ARCNET_CAP:

Help text

ARCnet "cap mode" packet encapsulation. Used to get the hardware acknowledge back to userspace. After the initial protocol byte every packet is stuffed with an extra 4 byte "cookie" which doesn't actually appear on the network. After transmit the driver will send back a packet with protocol byte 0 containing the status of the transmission: 0=no hardware acknowledge 1=excessive nak 2=transmission accepted by the receiver hardware

Received packets are also stuffed with the extra 4 bytes but it will be random data.

Cap only listens to protocol 1-8.



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