linux-stable.git/include/net/6lowpan.h, branch linux-4.6.y

6lowpan: iphc: add support for stateful compression

2016-02-23T19:29:40+00:00

This patch introduce support for IPHC stateful address compression. It
will offer the context table via one debugfs entry.
This debugfs has and directory for each cid entry for the context table.
Inside each cid directory there exists the following files:

 - "active": If the entry is added or deleted. The context table is
   original a list implementation, this flag will indicate if the
   context is part of list or not.
 - "prefix": The ipv6 prefix.
 - "prefix_length": The prefix length for the prefix.
 - "compression": The compression flag according RFC6775.

This part should be moved into sysfs after some testing time.

Also the debugfs entry contains a "show" file which is a pretty-printout
for the current context table information.

Reviewed-by: Stefan Schmidt 
Signed-off-by: Alexander Aring 
Signed-off-by: Marcel Holtmann

6lowpan: add debugfs support

2015-12-10T00:25:25+00:00

This patch will introduce a 6lowpan entry into the debugfs if enabled.
Inside this 6lowpan directory we create a subdirectories of all 6lowpan
interfaces to offer a per interface debugfs support.

Reviewed-by: Stefan Schmidt 
Signed-off-by: Alexander Aring 
Signed-off-by: Marcel Holtmann

6lowpan: add lowpan dev register helpers

2015-12-10T00:25:25+00:00

This patch introduces register and unregister functionality for lowpan
interfaces. While register a lowpan interface there are several things
which need to be initialize by the 6lowpan subsystem. Upcoming
functionality need to register/unregister per interface components e.g.
debugfs entry.

Reviewed-by: Stefan Schmidt 
Signed-off-by: Alexander Aring 
Signed-off-by: Marcel Holtmann

6lowpan: remove lowpan_is_addr_broadcast

2015-10-20T22:49:25+00:00

This macro is used at 802.15.4 6LoWPAN only and can be replaced by
memcmp with the interface broadcast address.

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

6lowpan: move IPHC functionality defines

2015-10-20T22:49:25+00:00

This patch removes the IPHC related defines for doing bit manipulation
from global 6lowpan header to the iphc file which should the only one
implementation which use these defines.

Also move next header compression defines to their nhc implementation.

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

6lowpan: remove lowpan_fetch_skb_u8

2015-10-20T22:49:25+00:00

This patch removes the lowpan_fetch_skb_u8 function for getting the iphc
bytes. Instead we using the generic which has a len parameter to tell
the amount of bytes to fetch.

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

6lowpan: cleanup lowpan_header_decompress

2015-10-20T22:49:24+00:00

This patch changes the lowpan_header_decompress function by removing
inklayer related information from parameters. This is currently for
supporting short and extended address for iphc handling in 802154.
We don't support short address handling anyway right now, but there
exists already code for handling short addresses in
lowpan_header_decompress.

The address parameters are also changed to a void pointer, so 6LoWPAN
linklayer specific code can put complex structures as these parameters
and cast it again inside the generic code by evaluating linklayer type
before. The order is also changed by destination address at first and
then source address, which is the same like all others functions where
destination is always the first, memcpy, dev_hard_header,
lowpan_header_compress, etc.

This patch also moves the fetching of iphc values from 6LoWPAN linklayer
specific code into the generic branch.

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

6lowpan: cleanup lowpan_header_compress

2015-10-20T22:49:24+00:00

This patch changes the lowpan_header_compress function by removing
unused parameters like "len" and drop static value parameters of
protocol type. Instead we really check the protocol type inside inside
the skb structure. Also we drop the use of IEEE802154_ADDR_LEN which is
link-layer specific. Instead we using EUI64_ADDR_LEN which should always
the default case for now.

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

6lowpan: introduce LOWPAN_IPHC_MAX_HC_BUF_LEN

2015-10-20T22:49:24+00:00

This patch introduces the LOWPAN_IPHC_MAX_HC_BUF_LEN define which
represent the worst-case supported IPHC buffer length. It's used to
allocate the stack buffer space for creating the IPHC header.

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

6lowpan: move shared settings to lowpan_netdev_setup

2015-10-08T12:25:34+00:00

This patch moves values for all lowpan interface to the shared
implementation of 6lowpan. This patch also quietly fixes the forgotten
IFF_NO_QUEUE flag for the bluetooth 6LoWPAN interface. An identically
commit is 4afbc0d ("net: 6lowpan: convert to using IFF_NO_QUEUE") which
wasn't changed for bluetooth 6lowpan.

All 6lowpan interfaces should be virtual with IFF_NO_QUEUE, using EUI64
address length, the mtu size is 1280 (IPV6_MIN_MTU) and the netdev type
is ARPHRD_6LOWPAN.

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