[mpls-linux-general] What does the RADIX_* do?

[Cheng Z. <che...@ya...>]

Hi,All,

  When I read the codes of mpls*.c in the
/usr/src/linux/net/mpls,I find I can not catch what
the RADIX_* do.Can anyone help me to understand
it?What do them to do?
  At the same time,mpls_label2key() is used to get the
key,but I wonder how can it get the mark?and what is
the role of key in the RADIX_*?
 Thanks for your help in advance.

Yours Sincerely
Cheng

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