kernel/linux.git/include/net/6lowpan.h, branch v4.4.298

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

ieee802154: change needed headroom/tailroom

2015-09-22T09:51:20+00:00

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 Signed-off-by: Marcel Holtmann

ieee802154: 6lowpan: remove tx full-size calc workaround

2015-09-17T11:20:04+00:00

This patch removes a workaround for datagram_size calculation while doing fragmentation on transmit. Reviewed-by: Stefan Schmidt Signed-off-by: Alexander Aring Signed-off-by: Marcel Holtmann

ieee820154: 6lowpan: dispatch evaluation rework

2015-09-17T11:20:03+00:00

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