adamdunkels
a8848517dd
UDP checksum is mandatory with IPv6. (Patch by Robert Quattlebaum.)
2010-10-24 22:28:43 +00:00
adamdunkels
77ecfb0366
Rewrote parts of the retransmission logic so that collect is robust against the situation where the MAC layer will fail to callback after a packet has been transmitted.
2010-10-24 21:08:19 +00:00
adamdunkels
8fa7bf6c31
Always restore the queuebuf to the packetbuf before calling the upper layers. Reduce the waiting time between successive MAC layer retransmissions.
2010-10-24 21:07:00 +00:00
adamdunkels
73f5535754
Made the guard time slightly more conservative - found an occasion where this was needed
2010-10-24 21:06:17 +00:00
adamdunkels
8f8741c7f0
Small style fixes
2010-10-24 21:05:42 +00:00
adamdunkels
fd4c0e64aa
Removed old unused files rand.[ch]. By default, Contiki uses the libc implementations of the rand() and srand() functions.
2010-10-24 21:02:23 +00:00
nvt-se
00a000cca0
Print the rank correctly in the debug output.
2010-10-22 15:40:10 +00:00
nvt-se
86823a84fb
Export fix-point representation of the ETX. Make RPL temporarily use the same representation as before.
2010-10-22 13:50:13 +00:00
joxe
804d23e9f4
made DIS Interval configurable
2010-10-22 13:13:40 +00:00
joxe
e414c8c5a4
added function for retrieving link etx to neighbor
2010-10-22 11:34:24 +00:00
nvt-se
6e28b1d3fb
Reduced ETX_LIMIT in order to avoid overflows. Removed ETX_LOSS_PENALTY and set packet_etx to ETX_LIMIT instead upon packet loss.
2010-10-21 19:46:21 +00:00
adamdunkels
9cb830ed37
Timing bugfix in the waiting period between channel samples to check if the coast is clear before sending a packet.
2010-10-20 22:25:24 +00:00
adamdunkels
06123fefe2
Defensive programming: make sure that a process is actually running before we try to kill it.
2010-10-20 22:24:46 +00:00
adamdunkels
3ffcff0656
Added mechanisms for explicit de-synchronization of synchronized neighbors. Added link-layer ACKs. Fixed bugs with MAC-layer interaction. Now seems to work somewhat (didn't work at all before, in some cases), but there are still problems with packet loss.
2010-10-20 15:23:43 +00:00
adamdunkels
5585d72c86
A simple but substantial change: uIP used the htons()/HTONS() macro
...
functions for converting between host and network byte order. These
names are the de facto standard names for this functionality because
of the original BSD TCP/IP implementation. But they cause problems for
uIP/Contiki: some platforms define these names themselves (Mac OS,
most notably), causing compilation problems for Contiki on those
platforms.
This commit changes all htons to uip_htons instead. Same goes for
htonl, ntohs, and ntohl. All-caps versions as well.
2010-10-19 18:29:03 +00:00
adamdunkels
34cba78ca8
Bugfix: bump advertisements only when a parent changes, not because of an upstream parent change
2010-10-19 07:34:29 +00:00
nifi
e2b4956a7f
Bug fix: release the packet and notify the sender if RDC returned an error
2010-10-14 19:08:39 +00:00
oliverschmidt
2f89e69ff7
Fixed build for platforms which use the default value for QUEUEBUF_NUM.
2010-10-12 19:51:28 +00:00
adamdunkels
020da4e8ba
Added a function for obtaining beacon intervals
2010-10-11 23:44:24 +00:00
adamdunkels
ec716ea62d
Do not reduce transmission interval, unless explicitly told so with the bump flag
2010-10-11 23:43:01 +00:00
adamdunkels
37adf130b4
Rewrite of the congestion logic. A node now report it being congested
...
when half the transmission queue is full. When a neighbor is heard to
be congested, the rtmetric of that node is inflated to avoid sending
more traffic in its direction.
Fixed problems with beacon intervals: intervals are now not reduced
when a path gets significantly worse, only when they get better.
2010-10-11 23:42:01 +00:00
adamdunkels
d821ba5e22
Added a lifetime for link estimates: if they are too old, they are
...
reset so that a new probing period can produce more up-to-date
estimates. Added a congestion mechanism whereby a neighbor can be
marked as being congested for a period of time, during which the ETX
for the neighbor will be artificially inflated.
2010-10-11 23:38:46 +00:00
adamdunkels
5eb4a0fe8d
Rewrote the initial link estimate logic: link estimates are now
...
computed only over the actual samples, not over the entire
buffer. Also, the initial link estimate is much more conservative now
(16 transmissions) to favor links that have been probed, and which
therefore are likely to have better ETXs.
2010-10-11 23:34:02 +00:00
adamdunkels
0cabe483c3
Don't call sink recv function for zero-size packets, since these most likely are link estimate probes or keepalive packets. Explicitly set eseqno to zero when opening a new connection.
2010-10-07 15:52:28 +00:00
adamdunkels
ad35c54473
Bugfix: when a node's rtmetric was lower than SIGNIFICANT_RTMETRIC_PARENT_CHANGE, its beacon timers would always be bumped to its lowest value
2010-10-05 20:06:47 +00:00
adamdunkels
52e9a6f1fb
Turned the DRAW_TREE debug flag off by default
2010-10-04 22:36:47 +00:00
adamdunkels
65d640ac53
Several bugfixes to the proactive link estimate maintenance code, which is now enabled by default. Simplified DRAW_TREE code for drawing routing graph in Cooja. Added routing metric penalty to parents that are congested or that drop packets.
2010-10-04 20:27:50 +00:00
adamdunkels
212e73faa6
Removed old netsim code. Added a function for obtaining the packet attributes of a queuebuf packet.
2010-10-04 20:26:01 +00:00
joxe
4f3fc1c404
fixed xmac to use new channel check define name
2010-10-03 22:46:53 +00:00
adamdunkels
ceebd7020a
Bugfix: the return value sometimes was wrong when a collision was detected.
2010-10-03 20:39:24 +00:00
adamdunkels
ae88ed04f1
Moved the definition of the channel check rate used by the radio duty
...
cycling layer. This definition was previously held in net/mac/mac.h,
with the name MAC_CONF_CHANNEL_CHECK_RATE. But since the rate is used
by the radio duty cycling layer, it makes more sense to change its
name to reflect this. Also, the configuration option should be tied to
the netstack configuration instead.
So the new configuration option is called
NETSTACK_CONF_RDC_CHANNEL_CHECK_RATE.
2010-10-03 20:37:32 +00:00
adamdunkels
40583fe112
Removed the polite announcement code, since it was not used, and enabled the broadcast announcement code by default. Increased the default intervals for broadcast announcements.
2010-10-03 20:10:22 +00:00
adamdunkels
605392522f
Bugfixes and improvements: rtmetrics are now 16-bit clean. Added experimental feature that proactively probes neighbors that have not yet been tried out, in order to get an initial ETX for them.
2010-10-03 20:08:44 +00:00
adamdunkels
d0579c8a81
Cleaned up the collect neighbor management code
2010-10-03 20:07:10 +00:00
adamdunkels
b23a364397
rtmetric values should always be computed as 16-bit values
2010-10-03 20:06:25 +00:00
nvt-se
909569f834
Must check if load_file succeeded
2010-10-01 20:14:14 +00:00
adamdunkels
32ba90ea4c
Bugfix: make sure that neighbor exists before attempting to update tx
...
count.
2010-09-28 06:53:02 +00:00
joxe
77c5187a2e
fixed bug where context is null but still referenced
2010-09-23 19:57:50 +00:00
joxe
494d2a3073
only compare with global addresses when selecting source for a specific destination
2010-09-23 18:17:27 +00:00
nifi
e242fb28bf
Reverted radio API change in CC2420 (not yet fully integrated with Contiki core)
2010-09-23 08:26:06 +00:00
adamdunkels
eed22a6f3c
A number of changes to the collect code:
...
* Added an optional "keep alive" mechanism whereby an idle network is
periodically probed by dummy packets to maintain a recent quality
metric when there is no traffic.
* Bugfix in when new routing metrics should be advertised
* Rewrote the ACK logic so that a queuebuf is not allocated for each
ack, only for those acks generated by the sink node.
* Updated the wrap-around logic for sequence numbers: when a sequence
number wraps, it won't go back to 0. Instead, it wraps to 128. This
allows us to understand when a node has rebooted: when its seqno is <
128, it has recently rebooted.
2010-09-22 22:08:08 +00:00
adamdunkels
2cae71e89b
Added a function for obtaining the link estimate and rtmetric for a neighbor
2010-09-22 22:04:55 +00:00
adamdunkels
46b2451969
Made the initial link estimate explicit
2010-09-22 22:03:21 +00:00
adamdunkels
40ee35e8c8
Rewrote all busy waits with a new macro, which has a built-in timeout to ensure that busy waits won't hang the CPU
2010-09-22 22:01:53 +00:00
joxe
1dc5366b15
fixed buggy comment
2010-09-21 13:15:25 +00:00
joxe
f1d19a5f9a
no callback to rpl if rpl is not used
2010-09-21 13:13:09 +00:00
joxe
63ab1ffce0
clear default route when neighbour is removed
2010-09-20 15:30:12 +00:00
nvt-se
58db04ee64
Set a high penalty for packet losses.
2010-09-15 15:59:52 +00:00
nvt-se
098f4001e0
Use fixed point arithmetic in the calculations of the ETX EWMA
2010-09-15 15:10:25 +00:00
nvt-se
adf6961a85
Various bug fixes and adjustments for rpl-11
2010-09-15 13:22:22 +00:00
