Commit Graph

950 Commits

Author SHA1 Message Date
adamdunkels
42f37ca1d3 Bugfix: removed old leftover code statement 2010-10-25 11:59:09 +00:00
adamdunkels
3bbd6a00a9 Replace old neighbors according to an LRU policy when a new neighbor needs to be added 2010-10-25 11:58:07 +00:00
adamdunkels
e680276954 ARP fix for multicast transmissions. (Patch by Robert Quattlebaum.) 2010-10-24 22:29:39 +00:00
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
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
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
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
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
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
adamdunkels
18e31f33b9 Minor tweaks. Removed debug output from CVS. 2010-09-14 06:48:36 +00:00
adamdunkels
eb58968459 Added a timer to each phase structure that keeps track of for how long
a particular receiver has not ACKed packets. After some time
(currently 16 seconds), the sender will begin sending full strobe
periods again.
2010-09-13 13:39:05 +00:00