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* 6lowpan: introduce new net/6lowpan directoryAlexander Aring2014-07-121-801/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | This patch moves generic code which is used by bluetooth and ieee802154 6lowpan to a new net/6lowpan directory. This directory contains generic 6LoWPAN code which is shared between bluetooth and ieee802154 MAC-Layer. This is the IPHC - "IPv6 Header Compression" format at the moment. Which is described by RFC 6282 [0]. The BLTE 6LoWPAN draft describes that the IPHC is the same format like IEEE 802.15.4, see [1]. Futuremore we can put more code into this directory which is shared between BLTE and IEEE 802.15.4 6LoWPAN like RFC 6775 or the routing protocol RPL RFC 6550. To avoid naming conflicts I renamed 6lowpan-y to ieee802154_6lowpan-y in net/ieee802154/Makefile. [0] http://tools.ietf.org/html/rfc6282 [1] http://tools.ietf.org/html/draft-ietf-6lowpan-btle-12#section-3.2 [2] http://tools.ietf.org/html/rfc6775 [3] http://tools.ietf.org/html/rfc6550 Signed-off-by: Alexander Aring <alex.aring@gmail.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: move 6lowpan header to include/netAlexander Aring2014-03-061-2/+1
| | | | | | | | | This header is used by bluetooth and ieee802154 branch. This patch move this header to the include/net directory to avoid a use of a relative path in include. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: 6lowpan: fixup for code movementStephen Rothwell2014-01-271-1/+1
| | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* 6lowpan: add a license to 6lowpan_iphc moduleYann Droneaud2014-01-221-0/+3
| | | | | | | | | | | | | | | | | | | | | Since commit 8df8c56a5abc, 6lowpan_iphc is a module of its own. Unfortunately, it lacks some infrastructure to behave like a good kernel citizen: kernel: 6lowpan_iphc: module license 'unspecified' taints kernel. kernel: Disabling lock debugging due to kernel taint This patch adds the basic MODULE_LICENSE(); with GPL license: the code was copied from net/ieee802154/6lowpan.c which is GPL and the module exports symbol with EXPORT_SYMBOL_GPL();. Cc: Jukka Rissanen <jukka.rissanen@linux.intel.com> Cc: Alexander Aring <alex.aring@gmail.com> Cc: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Yann Droneaud <ydroneaud@opteya.com> Acked-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* 6lowpan: cleanup udp compress functionAlexander Aring2013-12-171-5/+15
| | | | | | | | This patch remove unnecessary casts and brackets in compress_udp_header function. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: udp use subtraction on both conditionsAlexander Aring2013-12-171-1/+1
| | | | | | | Cleanup code to handle both calculation in the same way. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: udp use lowpan_fetch_skb functionAlexander Aring2013-12-171-19/+18
| | | | | | | | Cleanup the lowpan_uncompress_udp_header function to use the lowpan_fetch_skb function. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: add udp warning for elided checksumAlexander Aring2013-12-171-3/+8
| | | | | | | | | | | | Bit 5 of "UDP LOWPAN_NHC Format" indicate that the checksum can be elided. The host need to calculate the udp checksum afterwards but this isn't supported right now. See: http://tools.ietf.org/html/rfc6282#section-4.3.3 Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: fix udp byte orderingAlexander Aring2013-12-171-19/+20
| | | | | | | | | | | | | | The incoming udp header in lowpan_compress_udp_header function is already in network byte order. Everytime we read this values for source and destination port we need to convert this value to host byte order. In the outcoming header we need to set this value in network byte order which the upcoming process assumes. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: fix udp compress orderingAlexander Aring2013-12-171-1/+1
| | | | | | | | | | | | | | | In case ((ntohs(uh->source) & LOWPAN_NHC_UDP_8BIT_MASK) the order of uncompression is wrong. It's always first source port then destination port as second. See: http://tools.ietf.org/html/rfc6282#section-4.3.3 "Fields carried in-line (in part or in whole) appear in the same order as they do in the UDP header format" Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: udp use lowpan_push_hc_data functionAlexander Aring2013-12-171-17/+20
| | | | | | | | | | This patch uses the lowpan_push_hc_data to generate iphc header. The current implementation has some wrong pointer arithmetic issues and works in a random case only. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: fix/move/cleanup debug functionsAlexander Aring2013-12-121-26/+0
| | | | | | | | | | | | There are several issues on current debug behaviour. This patch fix the following issues: - Fix debug printout only if DEBUG is defined. - Move debug functions of 6LoWPAN code into 6lowpan header. - Cleanup codestyle of debug functions. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: Moving generic compression code into 6lowpan_iphc.cJukka Rissanen2013-12-111-0/+807
Because the IEEE 802154 and Bluetooth share the IP header compression and uncompression code, the common code is moved to 6lowpan_iphc.c file. Signed-off-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Acked-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
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