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authorPhoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>2014-05-14 17:43:06 +0200
committerDavid S. Miller <davem@davemloft.net>2014-05-15 15:51:42 -0400
commitc3a6114f31600b94ee10ebf62e4d493b401ade87 (patch)
treea854819cfede389764da13bcc0d7670e1f1e964f /net/mac802154
parent9dbccc30f3306114e1ca4a89da69be6d5f675782 (diff)
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ieee802154: add definitions for link-layer security and header functions
When dealing with 802.15.4, one often has to know the maximum payload size for a given packet. This depends on many factors, one of which is whether or not a security header is present in the frame. These definitions and functions provide an easy way for any upper layer to calculate the maximum payload size for a packet. The first obvious user for this is 6lowpan, which duplicates this calculation and gets it partially wrong because it ignores security headers. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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