update copyright info

update license to GPLv2 and GPLv3

[pico_device] - Removed more reference to non-existing IEEE802154_NO_MAC

[6LoWPAN] - Process pull request review

[6LoWPAN] - Improved interface with MAC-enabled device drivers. TODO: update units, check return types

[6LoWPAN-ND] - Reviewed neighbor discovery optimizations

[6LoWPAN-ND] - Proceedings in neighbor discovery optimizations

[6LoWPAN-LL] - Updated to more generic 6LoWPAN addresses

[radiotest] - discard frame when frame is received that node sent itself

[6LoWPAN-ND] - Initial neighbor discovery optimizations

[6LoWPAN] - Refactored radiotest-device to newest 6LoWPAN-API

pico_tree_insert: check return value and free memory if needed

[IEEE802.15.4] - A more generic approach for link layer protocols

[IEEE802.15.4] - refactored

fixing commented pico_free

fixing some errors

fixing pico_tree_insert return value checking (issue #380)

[Ethernet] - Full PoC of seperation of ethernet in standalone protocols with its own queues and its own protocol definition.

Seperation of ethernet from the stack

[IEEE802154] - Setup tests for IEEE802.15.4

[6LoWPAN_DEV] - Laid out new structure for refactoring of 6LoWPAN with seperation of layers

[6LoWPAN_DEV] - Generic 6LoWPAN-layer (like ethernet in pico_stack)

[6LoWPAN] - (WIP) Big refactoring going on :)

[6LoWPAN] - Fixex -Wconversion

[6LoWPAN] - Fixed modularity

[6LoWPAN] - Fixed flooding everything's working now! :)

clean up trailing whitespace (fixes #324)

[6LoWPAN-ND] - Final on address registration, ready for testing

Fix const correctness

pico_device_init should accept const mac because it's not supposed to modify this buffer

Implemented some specific improvements suggested by the Abstract
Interpretation tool

Improved C89 compatability (e.g. Watcom compiler)

[6LoWPAN] - Link Local IPv6 should only be derived from EUI-64, not from 16-bit short

[6LoWPAN-ND] - Cleanup

[6LoWPAN] - Better handling of IEEE802.15.4-addresses

[pico_device] - Added L2-mode to pico_device-structure

[6LOWPAN] LOWPAN_IPHC Compression & Decompression

[6LoWPAN] - Added support for 6LoWPAN addresses in picoTCP

20/08

[pico_device] - [TEMP?] Added separate sixlowpan-init routine because there wasn't a possibility to generate an IPv6 from EUI-64

Updated Copyright information.

Coding style enforced.

One delete seems enough

Fix possible memoryleak on error exit path

Implemented RA address lifetime.

IPv6 ND: Address is now automatically added upon valid RADV

IPV6: Several fixes for SLAAC (RFC4862)

Added link status call to the device driver interface

Made MTU configurable from dev

Also, fixed a problem with UDP fragmentation

Refactoring of frame send, avoid discarding when dev is busy

Reworked ETH support

- ETH specific functions are compiled out if not needed
- strict checking against ethernet protocol vs IP protocol
- meet requirements for QA tests on invalid ETH packets (bug #182)

Refactoring of ARP, IPV6 neighbors, packet delivery.

Enforced coding style via uncrustify

Compilation of all objects now depends on pico_defines only

Reduced cyclomatic complexity of stack/pico_device.c

Fixed some minor coding style violations

Finished up basic ipv6 support inclusion from private branch

Inclusion of IPv6 modules - work in progress

Added missing PICO_FREE

Fixed potential NULL dereference in pico_device.c

fixed #97 - yay

Refactored pico_device.c to decrease complexity

* changed pico_free into PICO_FREE
* changed pico_zalloc into PICO_ZALLOC

Fix for #86 - pico_hash

pico_hash now receives a length parameter

Added uncrustify. Enforced some coding rules. Added "make style" target.

Issue #17. Fixed warnings (part five).

Issue #17. Fixed warnings (part three)

Issue #17. Fixed warnings (part one)

Github Issue #17: Enabled more Warning flags, fixed all warnings.

Prototype of interrupt serving.

Note to self: interrupt can be served by directly calling the receive functions now that the queues are locked.

Task #639. Redesigned the implementation of 255.255.255.255 handling.

remove some memory bugs

Task #442 Integrated the new rb library + unit tests for it + a few bugfixes

Task #481 - Finished and tested new scheduler optimization

Added the functionality:
* a treshold to stop increasing loop_scores
* a IN and OUT direction to separate in-out traffic from 1 tick
* an additional pointer in individual loops to go round-robin in IN and OUT
* latency indication, number for the treshold to indicate when to stop increasing
loop_scores, improves latency (seen in ping test)

Tested with natbox, echo and multiple senders of 100 bytes per packet,
ran ping to determine latency (which is 60% less to the previous implementation).
The average through remains the same, which is correct according the latency
indication and the average number of packets per second.

Task #473 - implemented fair method for device loop

Changed LICENSE to GPL2. Removed the do-not-distribute clause from the source headers

dhcp server (#87) picoapp

Refactored ARP to fix the "unreachable" bug (see #201)

Maybe still a small frame memory leak when the destination is unreachable

Added random number generation (fixes #175)

Added copyright notice on top of each file.

(closes issue #100)

Added pico_tun driver

Reworked ARP a bit, forward now working.

Re-added shooted foot

Fixed problem with arp requests...

Fixed segfault in pico_ethernet_send

Implemented icmp echo reply. 2 bugs:

- Icmp crc is not correct.
- Sometimes segfault: investigate.

Reorganized directory structure.