linux-stable.git/net/6lowpan, branch linux-4.3.y

6lowpan: move module_init into core functionality

2015-08-11T20:05:36+00:00

This patch moves module_init of 6lowpan module into core functionality
of 6lowpan module. To load the ipv6 module at probing of the 6lowpan
module should be core functionality. Loading next header compression
modules is iphc specific. Nevertheless we only support IPHC for the
generic 6LoWPAN branch right now so we can put it into the core
functionality. If possible new compression formats are introduced nhc
should load only when iphc is build.

Signed-off-by: Alexander Aring 
Signed-off-by: Marcel Holtmann

6lowpan: add generic 6lowpan netdev private data

2015-08-11T20:05:36+00:00

This patch introduced the 6lowpan netdev private data struct. We name it
lowpan_priv and it's placed at the beginning of netdev private data. All
lowpan interfaces should allocate this room at first of netdev private
data. 6LoWPAN LL private data can be allocate by additional netdev private
data, e.g. dev->priv_size should be "sizeof(struct lowpan_priv) +
sizeof(LL_LOWPAN_PRIVATE_DATA)".

Signed-off-by: Alexander Aring 
Signed-off-by: Marcel Holtmann

6lowpan: Fix extraction of flow label field

2015-08-10T18:43:05+00:00

The lowpan_fetch_skb function is used to fetch the first byte,
which also increments the data pointer in skb structure,
making subsequent array lookup of byte 0 actually being byte 1.

To decompress the first byte of the Flow Label when the TF flag is
set to 0x01, the second half of the first byte is needed.

The patch fixes the extraction of the Flow Label field.

Acked-by: Jukka Rissanen 
Signed-off-by: Lukasz Duda 
Signed-off-by: Glenn Ruben Bakke 
Signed-off-by: Alexander Aring 
Signed-off-by: Marcel Holtmann

6lowpan: add request for ipv6 module

2015-07-23T15:10:48+00:00

The iphc module depends on CONFIG_IPV6, because it's not very useful to
build the module without IPv6 support. Recently an user reported about
issues for setting an IPv6 address to a 6LoWPAN interface. The issues
was solved by modprobe the ipv6 module before. To avoid such user issues
we try to request the ipv6 module when the 6LoWPAN module is loaded.

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

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