adamdunkels
4e0744954a
Rewrite of important parts of the Collect logic: link estimation
...
calculation and parent selection. This fixes a severe bug that caused
loops when packets were erroneously retransmitted due to ACK loss.
2010-09-08 19:21:45 +00:00
nifi
f05952c926
Changed packet id to use 8 bit instead of 4 bit
2010-08-31 13:14:49 +00:00
nifi
e965b74cf5
added missing include
2010-06-18 08:28:56 +00:00
adamdunkels
a8d8b6d31d
Improved parent management: parent neighbor is retained until a better neighbor is found (with 1 ETX less than parent). Don't drop parent neighbors when loop is detected (loops are transient anyway).
2010-04-01 10:45:21 +00:00
adamdunkels
a4f9e62295
Added a parameter to collect_open() that specifies whether or not the node should be a router for packets, or only an originator of packets. Updated the collect module to the new annoucement API.
2010-03-25 08:51:07 +00:00
adamdunkels
a9bad71fbd
Increased the number of bits that repressent the MAX_RETRANSMITS attribute to allow for more than 7 hop-by-hop retransmissions
2010-03-14 23:01:12 +00:00
adamdunkels
7165a3866f
Significant rework of the Contiki data collection protocol:
...
* the new version makes use of MAC-layer feedback so that bad paths
can be identified quicker and then avoided.
* the new code uses transport layer ACKs that contain feedback from
the collect protocol: when a packet cannot be forwarded due to lack
of resources, the ACK contains a flag that indicates that the packet
could not be forwarded. ACKs also contain the routing metric of the
sender, which improves agility in face of rapid path changes.
* loop detection and management has been improved: with higher path
metric agility, the system is more prone to short-lived routing
loops. Instead of dropping looping packets, the new version adjusts
the routing metric for the routes that exhibit loops so that the
risk for future loops is reduced.
* make use of packet attributes to inform the MAC layer of how many
times packets should be retransmitted.
2010-02-28 09:18:01 +00:00
adamdunkels
0eade2886c
Better loop handling: when a loop is detected, the neighbor to which the packet was originally sent gets an inflated ETX; made sure that collect without announcments work; increased timeouts, to work nicer in larger networks
2010-02-23 18:35:23 +00:00
adamdunkels
e70cf0c7c6
Rewrite of the collect module. The new version uses a packet queue for outgoing and forwarded packets so that more than one packet can be forwarded at the same time. The new version uses the packetqueue module to maintain the packet queue.
2009-04-29 20:48:57 +00:00
adamdunkels
65eb5fd4e8
Renamed the rimebuf module to packetbuf to signal that the module is used outside of a pure Rime context (e.g., the sicslowpan code uses it).
2009-03-12 21:58:20 +00:00
adamdunkels
3670ef2f44
Rewrote the collect module so that it uses the announcement module rather than the neighbor-discovery module. This makes it possible to implement other annoumcement back-ends than the traditional broadcast-based neighbor discovery
2009-02-09 20:58:25 +00:00
adamdunkels
c2c3835110
Changed name of Rime module ruc to unicast
2008-07-03 21:52:25 +00:00
adamdunkels
a6682c4bfd
originator address is const
2008-07-03 17:58:10 +00:00
adamdunkels
020a0c30aa
Rewrote the collect module to use packet attributes instead of explicit headers
2008-06-30 09:15:22 +00:00
nifi
839b6111d6
Changed send function to return false if it was not possible to send
2008-06-26 11:38:59 +00:00
adamdunkels
d99ca27820
Changed all occurences of u8_t and u16_t to uint8_t and uint16_t
2008-02-24 22:05:27 +00:00
adamdunkels
f737127cca
Minor type change
2008-01-08 07:55:00 +00:00
adamdunkels
01da62aa25
Changed local rtmetric name from 'local_rtmetric' to 'rtmetric' and updated the neighbor discovery module from nbh to neighbor-discovery
2007-12-09 15:43:09 +00:00
adamdunkels
dca1e0e446
Changed module name to 'collect' from 'tree' to better reflect the purpose of the module, rather than the particular data structure used to implement it
2007-11-28 16:04:41 +00:00
