[PATCH bluetooth-next 0/2] 6lowpan: stateful compression support

[Alexander Aring <alex.aring@gmail.com>]

Hi,

this contains at first some small fix for the netdev notifier which I deteced
while hacking 6lowpan stateful compression support.

I rework the debugfs entry for the stateful compression. Now each context entry
for a 6LoWPAN contains has his own subdirectory (named as his CID value).
In this subdirectories there exists the following files for manipulating the
context entry:

 - active: If the context belongs to the table or not.
 - compression: the compression flag according rfc6775.
 - prefix: ipv6 prefix in xxxx:xxxx:....:xxxx form.
 - prefix_lenght: the length of the ipv6 prefix.

This offers a setting per property instead doing remember the full context and
doing echo "$FULL_CONTEXT_INFORMATION" > ctx_table.

These file should be prepared to move into the sysfs directory when it seems to
running fine.

There exist one file "show" inside $LOWPAN_IFACE/contexts/. This file is for
a "pretty-printout" for the current context table. I use the same format-string
like RIOT-OS, example:

cid|prefix                                     |C
-------------------------------------------------
  0|                                 2001::/64 |1
  1|                                2001::1/128|1
  2|                                2001::5/128|1
  7|                                 2002::/64 |1


difference here is that RIOT shows the lifetime, but I currently see no sense to
handle the lifetime in kernelspace.

Also I added support to clean the context table when doing a "ifdown". The reason
is that IPv6 interface will also drop all address information while doing a
ifdown and a 6LoWPAN should not use previous context information after ifup again.

- Alex

Alexander Aring (2):
  6lowpan: iphc: add support for stateful compression
  ieee802154: 6lowpan: fix return of netdev notifier

 include/net/6lowpan.h         |  31 ++++
 net/6lowpan/core.c            |  39 +++-
 net/6lowpan/debugfs.c         | 247 +++++++++++++++++++++++++
 net/6lowpan/iphc.c            | 420 ++++++++++++++++++++++++++++++++++++------
 net/ieee802154/6lowpan/core.c |   7 +-
 5 files changed, 682 insertions(+), 62 deletions(-)

-- 
2.6.1