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tools/dirtpan/dirtpan.c: cleaned up embarrassing explanation of control byte

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- dirtpan.c: changed control byte from innovative 7 bit layout to the
  more common 8 bits. My, haven't we had our morning coffee yet ?
- dirtpan.c: added explanation that the two highest bits of the
  control byte have to be zero, to avoid conflicting with RFC4944
This commit is contained in:
Werner Almesberger 2011-06-19 08:40:56 -03:00
parent 29664701a8
commit e77658fe26
1 changed files with 6 additions and 3 deletions
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9
tools/dirtpan/dirtpan.c
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@ -37,9 +37,12 @@
/*
* Control byte structure:
*
* +--7--+--6--+--5--+--4--+--3--+--2--+--1--+
* | 0 | 0 | 0 | 0 | seq | pck_type |
* +-----+-----+-----+-----+-----+-----+-----+
* +--7--+--6--+--5--+--4--+--3--+--2--+--1--+--0--+
* | 0 | 0 | 0 | 0 | 0 | seq | pck_type |
* +-----+-----+-----+-----+-----+-----+-----+-----+
* =============
*
* Bits 6 and 7 must be zero to avoid conflicts with RFC 4944 (LoWPAN)
*/
#define SEQ 4