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* 6lowpan: Fix IID format for BluetoothLuiz Augusto von Dentz2017-04-121-4/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | According to RFC 7668 U/L bit shall not be used: https://wiki.tools.ietf.org/html/rfc7668#section-3.2.2 [Page 10]: In the figure, letter 'b' represents a bit from the Bluetooth device address, copied as is without any changes on any bit. This means that no bit in the IID indicates whether the underlying Bluetooth device address is public or random. |0 1|1 3|3 4|4 6| |0 5|6 1|2 7|8 3| +----------------+----------------+----------------+----------------+ |bbbbbbbbbbbbbbbb|bbbbbbbb11111111|11111110bbbbbbbb|bbbbbbbbbbbbbbbb| +----------------+----------------+----------------+----------------+ Because of this the code cannot figure out the address type from the IP address anymore thus it makes no sense to use peer_lookup_ba as it needs the peer address type. Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: Use netdev addr_len to determine lladdr lenLuiz Augusto von Dentz2017-04-121-0/+19
| | | | | | | | | | This allow technologies such as Bluetooth to use its native lladdr which is eui48 instead of eui64 which was expected by functions like lowpan_header_decompress and lowpan_header_compress. Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: add 802.15.4 short addr slaacAlexander Aring2016-06-151-0/+6
| | | | | | | | | | | | | | | This patch adds the autoconfiguration if a valid 802.15.4 short address is available for 802.15.4 6LoWPAN interfaces. Cc: David S. Miller <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: James Morris <jmorris@namei.org> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: Patrick McHardy <kaber@trash.net> Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* 6lowpan: add private neighbour dataAlexander Aring2016-06-151-0/+10
| | | | | | | | | | | | | | | This patch will introduce a 6lowpan neighbour private data. Like the interface private data we handle private data for generic 6lowpan and for link-layer specific 6lowpan. The current first use case if to save the short address for a 802.15.4 6lowpan neighbour. Cc: David S. Miller <davem@davemloft.net> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* 6lowpan: move mac802154 headerAlexander Aring2016-04-131-0/+3
| | | | | | | | | | | In case of link-layer specific handling for 802.15.4 we need to cast to 802.15.4 sepcific structures. Simple add this header when include the 6lowpan header. Signed-off-by: Alexander Aring <aar@pengutronix.de> Reviewed-by: Stefan Schmidt<stefan@osg.samsung.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: move eui64 uncompress functionAlexander Aring2016-04-131-0/+16
| | | | | | | | | | This function will be use in later functionality in other branches than generic 6lowpan, so we move it to the global 6lowpan header. Signed-off-by: Alexander Aring <aar@pengutronix.de> Reviewed-by: Stefan Schmidt<stefan@osg.samsung.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: move lowpan_802154_dev to 6lowpanAlexander Aring2016-04-131-0/+12
| | | | | | | | | | | This patch moves the 802.15.4 link layer specific structures to generic 6lowpan. This is necessary for special 802.15.4 6lowpan handling in 6lowpan generic layer. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: change naming for lowpan private dataAlexander Aring2016-04-131-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch changes the naming for interface private data for lowpan intefaces. The current private data scheme is: ------------------------------------------------- | 6LoWPAN Generic | LinkLayer 6LoWPAN | ------------------------------------------------- the current naming schemes are: - 6LoWPAN Generic: - lowpan_priv - LinkLayer 6LoWPAN: - BTLE - lowpan_dev - 802.15.4: - lowpan_dev_info the new naming scheme with this patch will be: - 6LoWPAN Generic: - lowpan_dev - LinkLayer 6LoWPAN: - BTLE - lowpan_btle_dev - 802.15.4: - lowpan_802154_dev Signed-off-by: Alexander Aring <aar@pengutronix.de> Reviewed-by: Stefan Schmidt<stefan@osg.samsung.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: iphc: add support for stateful compressionAlexander Aring2016-02-231-0/+32
| | | | | | | | | | | | | | | | | | | | | | | 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 <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <aar@pengutronix.de> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: add debugfs supportAlexander Aring2015-12-101-0/+3
| | | | | | | | | | 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 <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: add lowpan dev register helpersAlexander Aring2015-12-101-1/+6
| | | | | | | | | | | | 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 <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: remove lowpan_is_addr_broadcastAlexander Aring2015-10-211-10/+0
| | | | | | | | 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 <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: move IPHC functionality definesAlexander Aring2015-10-211-123/+0
| | | | | | | | | | | 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 <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: remove lowpan_fetch_skb_u8Alexander Aring2015-10-211-13/+14
| | | | | | | | | | 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 <alex.aring@gmail.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: cleanup lowpan_header_decompressAlexander Aring2015-10-211-6/+18
| | | | | | | | | | | | | | | | | | | | | | | | 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 <alex.aring@gmail.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: cleanup lowpan_header_compressAlexander Aring2015-10-211-7/+23
| | | | | | | | | | | | | 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 <alex.aring@gmail.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: introduce LOWPAN_IPHC_MAX_HC_BUF_LENAlexander Aring2015-10-211-0/+8
| | | | | | | | | | 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 <alex.aring@gmail.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: move shared settings to lowpan_netdev_setupAlexander Aring2015-10-081-0/+2
| | | | | | | | | | | | | | | | 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 <alex.aring@gmail.com> Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: change needed headroom/tailroomAlexander Aring2015-09-221-0/+8
| | | | | | | | | | | | | | | | | | | | | This patch cleanups needed_headroom, needed_tailroom and hard_header_len fields for wpan and lowpan interfaces. For wpan interfaces the worst case mac header len should be part of needed_headroom, currently this is set as hard_header_len, but hard_header_len should be set to the minimum header length which xmit call assumes and this is the minimum frame length of 802.15.4. The hard_header_len value will check inside send callbacl of AF_PACKET raw sockets. For lowpan interfaces, if fragmentation isn't needed the skb will call dev_hard_header for 802154 layer and queue it afterwards. This happens without new skb allocation, so we need the same headroom and tailroom lengths like 802154 inside 802154 6lowpan layer. At least we assume as minimum header length an ipv6 header size. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: 6lowpan: remove tx full-size calc workaroundAlexander Aring2015-09-171-113/+0
| | | | | | | | | This patch removes a workaround for datagram_size calculation while doing fragmentation on transmit. Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee820154: 6lowpan: dispatch evaluation reworkAlexander Aring2015-09-171-6/+25
| | | | | | | | | | | | | | | | | | | | This patch complete reworks the evaluation of 6lowpan dispatch value by introducing a receive handler mechanism for each dispatch value. A list of changes: - Doing uncompression on-the-fly when FRAG1 is received, this require some special handling for 802.15.4 lltype in generic 6lowpan branch for setting the payload length correct. - Fix dispatch mask for fragmentation. - Add IPv6 dispatch evaluation for FRAG1. - Add skb_unshare for dispatch which might manipulate the skb data buffer. Cc: Jukka Rissanen <jukka.rissanen@linux.intel.com> Reviewed-by: Stefan Schmidt <stefan@osg.samsung.com> Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: add generic 6lowpan netdev private dataAlexander Aring2015-08-111-0/+23
| | | | | | | | | | | | 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 <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* ieee802154: 6lowpan: rename process_data and lowpan_process_dataMartin Townsend2014-10-271-4/+6
| | | | | | | | | | 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 <mtownsend1973@gmail.com> Acked-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: remove skb_deliver from IPHCMartin Townsend2014-10-271-3/+1
| | | | | | | | | | | 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 <mtownsend1973@gmail.com> Acked-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: remove unused functionVarka Bhadram2014-07-301-11/+0
| | | | | | | This patch removes the unused function. Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: remove unused macrosVarka Bhadram2014-07-301-15/+0
| | | | | | | This patch removes the unused macros. Signed-off-by: Varka Bhadram <varkab@cdac.in> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: remove unused LOWPAN_FRAG_SIZE defineAlexander Aring2014-07-301-11/+0
| | | | | | | | | | | | | | This define is unused since commit 96cb3eb7a1a5f0c3598500a2348f7d2cc76afbd2 ("6lowpan: fix fragmentation on sending side"). It is a worst case scenario for payload calculation. Since commit 96cb3eb7a1a5f0c3598500a2348f7d2cc76afbd2 we calculation the payload to use the optimal size. This define is also necessary for ieee802154 6lowpan only and the file include/net/6lowpan.h should contain generic 6lowpan things only. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: iphc: use ipv6 api to check address scopeAlexander Aring2014-07-301-13/+0
| | | | | | | | This patch removes the own implementation to check of link-layer, broadcast and any address type and use the IPv6 api for that. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
* 6lowpan: include net/net_namespace.h on 6lowpan namepsace headerLuis R. Rodriguez2014-04-201-0/+1
| | | | | | | | | | Don't rely on driver files or other headers having this file included. CC: Alexander Smirnov <alex.bluesman.smirnov@gmail.com> Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com> Cc: linux-zigbee-devel@lists.sourceforge.net Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* 6lowpan: move 6lowpan header to include/netAlexander Aring2014-03-061-0/+434
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>
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