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1546 Commits

Author SHA1 Message Date
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
dak664
b9a9e7695d Add option to remove process name strings to save RAM 2010-09-14 18:55:04 +00:00
adamdunkels
18e31f33b9 Minor tweaks. Removed debug output from CVS. 2010-09-14 06:48:36 +00:00
nifi
095f700b63 Moved down inclusion of rtimer-arch.h to allow rtimer_clock_t to be used in rtimer-arch.h 2010-09-13 20:46:02 +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
adamdunkels
3ae774c91a Added a way to for specifying lists as parts of structs. These lists 
must be initialized with a special LIST_STRUCT_INIT() call before
using.
 2010-09-13 13:31:00 +00:00
adamdunkels
591766e663 Significant improvements to the Collect protocol: 
* Loop detection and untangling. Now uses in-band loop detection that
  works.

* Link quality estimation. Now starts with a conservative /
  pessimistic estimate for new links.

* Retransmissions. MAC layer and network layer retransmissions are now
  decoupled.

* Loss handling. Deals better with losses now.

* Concurrent applications. Each connection now maintains its own
  neighbor table with separated cost to sink estimates for each
  connection.
 2010-09-13 13:28:14 +00:00
oliverschmidt
a0b8927777 Allow to exit the process owning the foreground window by pressing ctrl-c. This is especially useful if there's no closebutton on the window frames (or no windows at all). 2010-09-09 20:21:26 +00:00
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
d06a1ecc0c corrected include path 2010-08-25 18:35:52 +00:00
dak664
12479c32bc Fix compiler warnings 2010-08-01 21:18:07 +00:00
oliverschmidt
89f6235c13 Using wherex() to determine the length of the string printed with cputsn() fails if the right edge of the screen was reached as wherex() then returns 0. 
Therefore we rather count the chars actually printed in cputsn() and return that value thus avoiding usage of wherex() in those scenarios altogether.
 2010-07-20 22:19:23 +00:00
nvt-se
11760059d3 The second predicate is not needed. 2010-07-03 23:52:02 +00:00
nifi
3e6113be72 removed debug output 2010-06-30 09:03:20 +00:00
nvt-se
007d4a4001 Improved logic for processing DIOs 2010-06-28 14:51:23 +00:00
nifi
c44cf73e4f Adapted to new SPI and CC2420 naming 2010-06-24 11:25:55 +00:00
nifi
f609cb0f7c Added macro to read from CC2420 RAM 2010-06-24 11:25:07 +00:00
nifi
30db4eff52 Made QUEUEBUF_STATS configurable 2010-06-24 09:48:21 +00:00
nifi
49a2ca6b1e Fixed naming of CC2420 macros 2010-06-24 09:28:38 +00:00
nifi
fb3c2e75cf removed obsolete definitions 2010-06-24 09:28:12 +00:00
nifi
c6b6b6625c removed obsolete header file for CC2420 2010-06-24 09:20:28 +00:00
joxe
f7a82a9145 split SPI code into generic and CC2420-related and renamed constants in CC2420 2010-06-23 10:15:28 +00:00
joxe
bc398ca546 removed platform dependent loop-count from cc2420 - moved to platform config instead 2010-06-21 19:48:00 +00:00
joxe
a5d7b197eb added support for the Z1 platform and its 8Mhz 2010-06-21 19:09:35 +00:00
joxe
1f0a43bf01 fixed timer bug - did not do equality comparison 2010-06-21 19:07:24 +00:00
joxe
546504516b changed timer comparison to avoid crashing mspgcc4 2010-06-21 09:41:49 +00:00
nifi
e965b74cf5 added missing include 2010-06-18 08:28:56 +00:00
nifi
4741b95858 added missing include 2010-06-16 10:10:10 +00:00
nifi
21828ad782 Changed the retransmission time to be based on the configured MAC channel check rate when the RDC has no channel check interval. 2010-06-16 10:08:30 +00:00
adamdunkels
7647cbd8aa Use the list_item_next() API 2010-06-15 19:22:25 +00:00
adamdunkels
560c84a2fe Added a function for getting the first global IPv6 address 2010-06-15 19:16:22 +00:00
adamdunkels
a84cc7c8a0 Added a function for obtaining the next item on the list. This makes list iterations nicer, as the ->next pointer now is hidden within the list abstraction. 2010-06-15 18:54:27 +00:00
nifi
01b1359b1f removed unused (and slightly problematic) code 2010-06-15 14:19:22 +00:00
nifi
46f9f7e6c0 corrected include path 2010-06-15 13:31:22 +00:00
adamdunkels
3fa8ffda1a Moved the modules packetbuf, queuebuf, and packetqueue from net/rime to net/, since they are not Rime-specific 2010-06-14 19:19:16 +00:00
adamdunkels
951fd78f6c ctimer moved from net/rime to sys/ 2010-06-14 18:58:45 +00:00
nvt-se
fad2b1def9 Clarified the function naming for neighbor information callbacks - names now indicate where the information is from. 2010-06-14 18:35:04 +00:00
nifi
adc38568ad Minor optimization: replaced init loops with memset to reduce code size 2010-06-14 13:51:13 +00:00
nifi
7499939c94 removed debug output 2010-06-14 13:07:09 +00:00
nvt-se
e000b1abf3 A major update to ContikiRPL resulting in a reduced code footprint by 
300 bytes, as well as cleaner protocol logic.

* Made parent management uniform.

* Simplified the DIO processing.

* Improved the Objective Function API and its documentation.

* Removed redundant code at various places.

* Improved identifier naming.

* Switched visualization from candidate parents to preferred parents only.

* Made DAO ACK transmissions configurable.

* Improved initial ETX guess by using a cached local confidence value.

* Added a periodical rank recalculation function to reduce
  the maximum stack depth.

* Increased the Trickle redundancy constant to ensure faster
  topological updates.
 2010-06-14 12:44:37 +00:00
adamdunkels
a890cd3d49 Moved ctimer.[ch] from their old and illogical location in core/net/rime to a more appropriate place in core/sys 2010-06-14 11:33:58 +00:00
adamdunkels
97708d6235 Documentation group set accordingly 2010-06-14 07:35:53 +00:00
adamdunkels
8f8393aadc Moved ctimer.[ch] from their old and illogical location in core/net/rime to a more appropriate place in core/sys 2010-06-14 07:34:36 +00:00
adamdunkels
baa62e9314 Addresses are not const 2010-06-14 06:55:26 +00:00
adamdunkels
2647f879c2 Bugfix: select the best parent if current parent is NULL 2010-06-14 06:54:47 +00:00
adamdunkels
8d1680fed5 Filter duplicate packets 2010-06-14 06:52:41 +00:00
adamdunkels
a6bd51f361 If a packet is lost due to NOACK or TXERR, we count the number of transmissions and we add an additional loss penalty (currently one) 2010-06-14 06:51:58 +00:00
joxe
1095997b66 made DIOs and OCP 09 compliant 2010-06-12 10:55:46 +00:00
nvt-se
75b624eb71 Refactored the code, removed void pointer arithmetic, and fixed invalid list removal after freeing of memb object. 2010-06-11 12:32:48 +00:00
nvt-se
8a43743a42 Updated declaration for rpl_alloc_dag. 2010-06-08 21:41:02 +00:00
nvt-se
b1521e4950 Check correctly if a DAG already exists in the same instance. 2010-06-08 21:37:22 +00:00
adamdunkels
296c828ac2 Removed instant reaction to packet loss. Previously, a neighbor was dropped if no MAC layer ack was received. 2010-06-08 19:25:40 +00:00
nvt-se
4a08f545c9 Make the distinction between incoming and outgoing DTSN clear. 2010-06-08 16:21:54 +00:00
nvt-se
b8848f29eb Replaced invalid attempt to switch preferred parent when its DS6 neighbor entry got purged. 2010-06-08 15:40:50 +00:00
nvt-se
4e61d69a49 Removed redundant code, moved the control of acceptable rank increases into a separate function. 2010-06-07 14:01:22 +00:00
nvt-se
c6c6760838 Validate incoming DTSN value 2010-06-07 13:40:05 +00:00
nvt-se
e5fd1f47fa Copy the DTSN from the DIO when joining a DAG. 2010-06-07 11:36:02 +00:00
nvt-se
f0afbb69ab Fixed typo 2010-06-06 21:48:15 +00:00
nvt-se
3748f782c5 Added basic functionality for DAO ACKs and DTSN. Randomized DAO timer. 2010-06-06 21:42:50 +00:00
joxe
f4508cc1e2 minor fixes + improved debug-printout 2010-06-06 12:45:55 +00:00
joxe
e75c77937e fixed bug that caused problems when uncompressing unspecified address 2010-06-06 12:44:12 +00:00