[RFC] Phonet pipe protocol

	Hello,

This patchset adds the Phonet pipe (end-point) protocol. This protocols
provides some connection handling and negotiated congestion control. It's used
as a generic protocol for bulk transfers with Nokia cellular modems.

The third patch provides virtual IP interface support on top of a
connected Phonet pipe socket. This is used for IP over GPRS.
The implementation uses sock callbacks internally and socket options as
the userland API. Not sure if this is the "right" way.

 Documentation/networking/phonet.txt |   54 +
 include/linux/phonet.h              |   12
 include/linux/socket.h              |    1
 include/net/phonet/gprs.h           |   38 +
 include/net/phonet/pep.h            |  118 +++
 net/phonet/Makefile                 |    6
 net/phonet/af_phonet.c              |    3
 net/phonet/pep-gprs.c               |  345 ++++++++++
 net/phonet/pep.c                    | 1136 +++++++++++++++++++++++++++++++++++-
 net/phonet/socket.c                 |   14
 10 files changed, 1689 insertions(+), 38 deletions(-)

Feedback welcome.

-- 
Rémi Denis-Courmont
Maemo Software, Nokia Devices R&D
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