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Re: [PATCHv3] printf: Add format for 8-byte EUI-64 type

From Joe Perches <joe@perches.com>
Newsgroups linux.kernel
Subject Re: [PATCHv3] printf: Add format for 8-byte EUI-64 type
Date 2015-12-10 00:30 +0100
Message-ID <qDWlk-6vk-7@gated-at.bofh.it> (permalink)
References <qDW1Y-6ob-5@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Wed, 2015-12-09 at 16:06 -0700, Keith Busch wrote:
> MAC addresses may be formed using rules based on EUI-64, which is 2 bytes
> longer than a typical 6-byte MAC. This patch adds a long specifier to
> the %pM format to support the extended unique identifier.
> 
> Since there are multiple valid possible permutations of format specifiers,
> the decoding is done in a loop, and the default ':' separator is
> initialized at declaration time. A side effect of this allows 'F' and
> 'R' both be specified, so these are appended to the documentation.

Just thought of this:

An alternative is using a format of "%8phC"

Is there a use case for a bluetooth or FDDI EUI-64?

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Thread

[PATCHv3] printf: Add format for 8-byte EUI-64 type Keith Busch <keith.busch@intel.com> - 2015-12-10 00:10 +0100
  Re: [PATCHv3] printf: Add format for 8-byte EUI-64 type Joe Perches <joe@perches.com> - 2015-12-10 00:30 +0100
    Re: [PATCHv3] printf: Add format for 8-byte EUI-64 type Keith Busch <keith.busch@intel.com> - 2015-12-10 16:10 +0100
      Re: [PATCHv3] printf: Add format for 8-byte EUI-64 type Andy Shevchenko <andy.shevchenko@gmail.com> - 2015-12-11 16:50 +0100
  RE: [PATCHv3] printf: Add format for 8-byte EUI-64 type "Elliott, Robert (Persistent Memory)" <elliott@hpe.com> - 2015-12-10 02:50 +0100

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