linux-toradex.git/net/6lowpan, branch v4.1

6lowpan: nhc: add other known rfc6282 compressions

2015-02-14T22:08:44+00:00

This patch adds other known rfc6282 compression formats to the nhc
framework. These compression formats are known but not implemented yet.
For now this is useful to printout a warning which compression format
isn't supported.

Signed-off-by: Alexander Aring 
Cc: Martin Townsend 
Reviewed-by: Stefan Schmidt 
Acked-by: Jukka Rissanen 
Signed-off-by: Marcel Holtmann

6lowpan: add udp compression via nhc layer

2015-02-14T22:08:44+00:00

This patch move UDP header compression and uncompression into the
generic 6LoWPAN nhc header compression layer. Moreover this patch
activates the nhc layer compression in iphc compression and
uncompression functions.

Signed-off-by: Alexander Aring 
Cc: Martin Townsend 
Reviewed-by: Stefan Schmidt 
Acked-by: Jukka Rissanen 
Signed-off-by: Marcel Holtmann

6lowpan: add generic nhc layer interface

2015-02-14T22:08:44+00:00

This patch adds a generic next header compression layer interface. There
exists various methods to do a header compression after 6LoWPAN header
to save payload. This introduce a generic nhc header which allow a
simple adding of a new header compression format instead of a static
implementation inside the 6LoWPAN header compression and uncompression
function.

Signed-off-by: Alexander Aring 
Cc: Martin Townsend 
Reviewed-by: Stefan Schmidt 
Acked-by: Jukka Rissanen 
Signed-off-by: Marcel Holtmann

net/6lowpan: Remove FSF address from GPL statement.

2014-12-05T11:43:04+00:00

This might change and we already deliver a copy of the license with
the kernel. This was already removed form the ieee802154 code but
missed here.

Signed-off-by: Stefan Schmidt 
Acked-by: Alexander Aring 
Acked-by: Jukka Rissanen 
Signed-off-by: Marcel Holtmann

6lowpan: move skb_free from error paths in decompression

2014-11-06T21:09:48+00:00

Currently we ensure that the skb is freed on every error path in IPHC
decompression which makes it easy to introduce skb leaks.  By centralising
the skb_free into the receive function it makes future decompression routines
easier to maintain.  It does come at the expense of ensuring that the skb
passed into the decompression routine must not be copied.

Signed-off-by: Martin Townsend 
Acked-by: Jukka Rissanen 
Acked-by: Alexander Aring 
Signed-off-by: Marcel Holtmann

6lowpan: fix udp header compression when using raw sockets

2014-11-04T16:31:01+00:00

If you use RAW sockets the transport header offset is not set by the
ipv6 stack so when we get to the udp header compression it does not
compress the right part of the packet.

This patch adds a check for this scenario and sets the transport
header offset.

Signed-off-by: Simon Vincent 
Acked-by: Alexander Aring 
Signed-off-by: Marcel Holtmann

ieee802154: 6lowpan: rename process_data and lowpan_process_data

2014-10-27T14:51:16+00:00

As we have decouple decompression from data delivery we can now rename all
occurences of process_data in receive path.

Signed-off-by: Martin Townsend 
Acked-by: Alexander Aring 
Acked-by: Jukka Rissanen 
Signed-off-by: Marcel Holtmann

6lowpan: remove skb_deliver from IPHC

2014-10-27T14:51:15+00:00

Separating skb delivery from decompression ensures that we can support further
decompression schemes and removes the mixed return value of error codes with
NET_RX_FOO.

Signed-off-by: Martin Townsend 
Acked-by: Alexander Aring 
Acked-by: Jukka Rissanen 
Signed-off-by: Marcel Holtmann

6lowpan: Use skb_cow in IPHC decompression.

2014-10-25T05:56:25+00:00

Currently there are potentially 2 skb_copy_expand calls in IPHC
decompression.  This patch replaces this with one call to
skb_cow which will check to see if there is enough headroom
first to ensure it's only done if necessary and will handle
alignment issues for cache.
As skb_cow uses pskb_expand_head we ensure the skb isn't shared from
bluetooth and ieee802.15.4 code that use the IPHC decompression.

Signed-off-by: Martin Townsend 
Acked-by: Alexander Aring 
Acked-by: Jukka Rissanen 
Signed-off-by: Marcel Holtmann

6lowpan: Allow 6LoWPAN to be modular

2014-08-07T18:44:18+00:00

Change config symbol 6LOWPAN from type bool to type tristate, so
6LoWPAN can be built modular, just like IPV6

Signed-off-by: Geert Uytterhoeven 
Acked-by: Marcel Holtmann 
Signed-off-by: David S. Miller