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Author SHA1 Message Date
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
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
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
dak664 12479c32bc Fix compiler warnings 2010-08-01 21:18:07 +00:00
nvt-se 11760059d3 The second predicate is not needed. 2010-07-03 23:52:02 +00:00
nvt-se 007d4a4001 Improved logic for processing DIOs 2010-06-28 14:51:23 +00:00
nifi 30db4eff52 Made QUEUEBUF_STATS configurable 2010-06-24 09:48:21 +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
nifi 01b1359b1f removed unused (and slightly problematic) code 2010-06-15 14:19:22 +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 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
joxe 17209e8fa4 moved code for autoconfiguring global address into join_dag 2010-06-03 18:37:47 +00:00
nvt-se c201058325 Purge all routes related to a DAG being freed. Do not send no-DAOs when doing a global repair. 2010-06-03 15:20:56 +00:00
joxe ba2bf31c20 changed DAOs to be formatted according to the rpl-08 specification 2010-06-03 14:49:15 +00:00
nvt-se f52e97111f Made the remove_parents function more powerful by adding a flag that indicates whether no-DAOs should be sent or not. Fixed some style issues and a possible NULL pointer dereference. 2010-06-03 12:55:09 +00:00
nvt-se 352fb4e74d Restrict the rank to INFINITE_RANK 2010-06-03 12:12:20 +00:00
joxe 62abed8347 fixed a minor bug causing too low rank during global repair 2010-06-02 16:54:59 +00:00
joxe 941443878b fixed rank calculation bug in of-etx 2010-06-02 16:23:08 +00:00
joxe f069320ca9 removed sequence_number and replaced with version - fixing global repair functionality 2010-06-02 11:59:51 +00:00
joxe fec0e8df69 changed RPL to be more 08 compliant - DIO and DIO options are formatted as in RPL-08 2010-06-01 22:30:02 +00:00
joxe 7887559d56 fixed bug in ttl decompression 2010-06-01 12:37:54 +00:00
joxe 518f9c1a00 refactoring and cleanup 2010-05-31 20:42:27 +00:00
nifi b54c6e673b Updated API for uiplib and resolv to use uip_ipaddr_t instead of uint16_t for compability with IPv6 2010-05-31 15:22:08 +00:00
nvt-se c13bb8666b Better validation of incoming DIOs. Added a reset function to the OF API. 2010-05-31 14:22:00 +00:00
oliverschmidt 126ea40994 Removed UIP_CONF_PLAIN_BUFFER again now that the pointer indirection to uip_buf was removed again. 2010-05-30 09:46:12 +00:00
nvt-se f135105567 Added support for multiple objective functions. 
Extended the objective function API with a callback function that receives link-layer neighbor information.

Throttled DAO transmissions to one per DEFAULT_DAO_LATENCY period.

Added support for an ETX objective function (hysteresis control still lacking though).

Fixed a leak of routes installed by DAOs.

Control that dst_adv_supported is set before sending DAOs.

Improved debugging output.
 2010-05-29 22:23:21 +00:00
nifi f6e0b46f38 * Made Chameleon header processing module configurable (CHAMELEON_CONF_MODULE) 
* Removed the unused init function from header processing modules
* Added option CHAMELEON_CONF_WITH_MAC_LINK_ADDRESSES to specify that
  MAC link addresses should be used instead of Chameleon's own encoding
  of sender and receiver. This avoids encoding the link addresses twice
  when the MAC RDC has its own addresses.
 2010-05-28 06:18:39 +00:00
nifi b7b2c8fcde Added macro to identify address attributes for use in header processing modules 2010-05-27 20:28:29 +00:00
nifi ac9b862cd0 Added configurable support for 802.15.4 autoack 2010-05-26 14:12:33 +00:00
nvt-se 320fa820ca Renamed neighbors to parents. Removed redundant code. Corrected the logic for max rank increase. 2010-05-25 21:58:54 +00:00
joxe 34b8313fb6 added experimental support for disseminating autoconf prefix via DIO suboption 2010-05-25 19:19:43 +00:00
nvt-se 6c4bf93141 Handle MAC_TX_ERR notifications. 2010-05-25 15:29:51 +00:00
nvt-se c5d1c3ea27 Improvements to local repair and DAO handling. 2010-05-24 16:38:56 +00:00
nvt-se f882901bf6 Remove unreachable neighbors immediately, rather than using an ETX threshold that leads to slow topological repairs. ETX information should later be stored even for removed neighbors if there is room. 2010-05-24 16:38:17 +00:00
joxe 16c212798f cleanup of the code, removing dead core + adding local vars to save some space. 2010-05-24 14:28:56 +00:00
joxe 2d447502d4 changed uip_buf to a union for 32-bit alignment 2010-05-24 10:07:34 +00:00
joxe 9db7f06368 fixed compiler warnings 2010-05-24 09:57:20 +00:00
joxe 56a3a71108 added include of string.h since memcpy are used 2010-05-19 16:16:57 +00:00
joxe 5c30aed814 removed nd llao option struct since not naturally aligned - replaced struct fields access with array based access 2010-05-19 12:21:45 +00:00
nvt-se 4411807b29 Fixed bug in DAO input. Made printfs more portable. 2010-05-18 16:43:56 +00:00
nifi ed4debe285 Changed neighbor notification to be default on when using RPL 2010-05-11 10:02:29 +00:00
nifi 7aeb206840 Added isinfinite to uip_ds6_defrt_t to handle infinite life time 2010-05-10 13:46:35 +00:00
joxe 058ef029e4 replaced hardcoded value with constant for route lifetime 2010-05-10 11:16:35 +00:00
joxe c0c7cea3ce fixed bug that caused select_src to set a non legal address - now sets unspecified if no address found 2010-05-10 11:10:27 +00:00
joxe 6f66d36d67 avoid sending DAO when address is tentative 2010-05-09 19:12:47 +00:00
joxe adb00ed932 factored out function for getting link local address in ds6 and made use of it in rpl for checking state of lladdress as DIOs should not be sent when tentative 2010-05-09 17:52:37 +00:00
oliverschmidt e5665fb968 The recent change turning uip_buf from an array to a pointer seems a quite heavyweight way to have the uip_buf alligned to a 32-bit boundary. Contiki is - still - supposed to be portable across a wide range of toolchains - therefore it i.e. intentionally doesn't use C99 features. From that perspective it seems questionable if all toolchains are able to optimize away the overhead imposed by an "unnecessary" indirection to access uip_buf - and uIP consists mostly of accesses to uip_buf. Even if the future is supposed to bring support for multiple uip_bufs which would turn the uip_buf pointer from a mere workaround to an neceesary element on can still presume that there will be targets with resources limited in a way prohibiting the use of several uip_bufs. So at least for those targets will still be a usecase for a "plain", not indirected uip_buf. 
Therefore it seems reasonable to allow to stay with the "plain" uip_buf at compile-time.
 2010-05-08 07:23:55 +00:00
oliverschmidt dec19626e8 Adjusted UIP_CONF_EXTERNAL_BUFFER to apply to actual buffer only. 2010-05-07 20:45:16 +00:00
fros4943 bc0ea1f81d bug fix: dag pointer may be NULL 2010-05-07 13:51:34 +00:00
joxe cd5dfa9692 added const for the uip_buf pointer for more efficient and smaller uip code and fixed same construct for the sicslowpan code 2010-05-05 13:07:45 +00:00
nvt-se 361e210751 Improvements to style and commentary. 2010-05-04 22:55:32 +00:00
joxe 01881f92a8 added missing include 2010-05-04 14:41:55 +00:00
joxe 790819e701 allocate uip_buf as uint32_t to avoid risk for unaligned uip_buf on 32 or 16 bit architectures 2010-05-04 09:19:41 +00:00
joxe 7d235841b3 always include the RPL route state to allow compilation of rpl code 2010-05-03 14:12:03 +00:00
nifi 6c86398778 Added check to not copy or create too large packets 2010-05-02 14:59:11 +00:00
nifi a04372adc4 Fixed conversion of packetbuf address type to address index and corrected return value 2010-05-02 12:21:34 +00:00
joxe f72bd5572c added initialization of RPL 2010-05-01 13:04:31 +00:00
joxe 0531d9bd82 moved RPL routing state struct into uip-ds6 2010-05-01 12:02:25 +00:00
nvt-se 9a4a9b9437 Removed return value in function that should not return a value. 2010-04-30 23:13:58 +00:00
nvt-se ecada2d1ac *** empty log message *** 2010-04-30 23:10:45 +00:00
nvt-se b8a3a4109e Adjusted the code so as to remove compilation warnings. 2010-04-30 22:18:12 +00:00
nvt-se b822dbb25e Addressed compilation warnings. 2010-04-30 15:04:47 +00:00
nvt-se 4106f4d798 Increased minimum DIO interval from 1024 ms to 4096 ms in order to more calm in duty-cycled networks. 2010-04-30 15:03:55 +00:00
joxe 168a65d989 added ContikiRPL - an implementation of IETF ROLL RPL 2010-04-30 13:43:53 +00:00
joxe 167b0d636e added icmp_send function and moved rpl input function signature 2010-04-30 13:22:21 +00:00
joxe dc1a5f70ff added uip-debug utilities 2010-04-30 13:20:57 +00:00
nvt-se 7e0e2fe284 Removed obsolete rime-route code for IPv6 2010-04-30 12:43:37 +00:00
joxe cc9914a4f3 fixed uip to use UDP_BUF instead of TCP_BUF when setting udp ports - minor cleanup 2010-04-30 08:46:27 +00:00
adamdunkels 3d10dedecf Added a safety measure against a problem where a node in rare situations would turn itself into a sink. Not entirely sure why this happens, but the safety measure should at least avoid the results of the problem. Added more debug messages. 2010-04-30 07:33:51 +00:00
adamdunkels 0859d4b95f Avoid turning off the radio in the middle of a packet reception 2010-04-30 07:32:39 +00:00
adamdunkels e606c674c2 Rewrote LPP so that it uses 802.15.4 headers. A number of bugfixes with respect to alignment. Avoid turning off the radio in the middle of packet reception. 2010-04-30 07:31:44 +00:00
adamdunkels 55b6129bd2 Debug printout fix 2010-04-30 07:29:31 +00:00
adamdunkels e523c36cdf Removed the (unused) header packet of the queuebuf. Added a function for accessing address attributes in the queuebuf 2010-04-30 07:29:08 +00:00
adamdunkels 3c735fcea4 Added a packetbuf flag that indicates if the link layer acks should be used or not 2010-04-30 07:25:51 +00:00
adamdunkels 798f1c63bd Make it possible to receive multicast UDP packets 2010-04-30 07:19:33 +00:00
fros4943 18e5718c97 avoid freeing queuebuf multiple times, and free buffer after cancelling connection 2010-04-27 13:08:55 +00:00
fros4943 12b6f35ce7 PRINTF()ed debugging output 2010-04-27 12:56:35 +00:00
nifi 85d6f6c514 removed unused variable 2010-04-26 22:41:50 +00:00
nifi 875ad7ffda Fixed to not change the header if the header allocation fails 2010-04-26 22:05:40 +00:00
nifi b26f45a35b code cleanup 2010-04-26 17:55:11 +00:00
nifi d761b6e89a Added MAC header to handle padding 2010-04-26 17:46:21 +00:00
nifi 14b1bb9f57 Fixed to only use leds when DEBUG is set 2010-04-20 11:41:16 +00:00
nvt-se 2e5d97366a ensure matching format and type in debug printf 2010-04-09 16:21:07 +00:00
adamdunkels 3670fac618 Bugfix: timing fixed 2010-04-08 18:23:24 +00:00
adamdunkels f2bf8965d5 MAC sequence number attribute 2010-04-08 09:46:30 +00:00
adamdunkels 91ff8574ad Improved handling of duplicate packets 2010-04-08 09:32:56 +00:00
nvt-se ac4ba199bc Turn off DEBUG mode by default. 2010-04-06 21:37:54 +00:00
nvt-se 75dd41601b Added a macro for checking if an address is link local. 2010-04-06 16:47:18 +00:00
adamdunkels 497111bcc9 Added an optional rate limit for broadcast transmissions 2010-04-06 11:57:43 +00:00
adamdunkels e06a30fdb0 Added MAC-layer duplicate message suppression, which is very helpful when running with duty cycling turned off 2010-04-05 19:28:07 +00:00
adamdunkels c68ee6e577 Bugfix: memory from the wrong memb was freed. 2010-04-04 21:02:09 +00:00
adamdunkels a4c328785a Small timing tweaks 2010-04-04 21:01:24 +00:00
adamdunkels 62039a530d Removed non-existant cooja-debug.h include 2010-04-04 12:31:47 +00:00
adamdunkels 7d6ff0289e Fiddled more with the timing: the phase seems stable now at least. Still bugs left though... 2010-04-04 12:28:29 +00:00
adamdunkels be117afe04 After a lot of tweaking and twiddling with the timing of the ContikiMAC code and the mechanisms in the CC2420 driver, things seem to work somewhat stable now - knock on wood! 2010-04-04 07:49:30 +00:00
adamdunkels 83eaa70f03 Added pending flag 2010-04-03 13:34:20 +00:00
adamdunkels 121ca946e1 Improved phase lock behaviour when neighbor is not duty cycling: senders notify receivers via the 802.15.4 pending bit that they are not duty cycling. Neighbors then will start sending packets immediately and not wait for neighbors' phase. Tweaking of ContikiMAC timers to make it more reliable. 2010-04-03 13:28:30 +00:00
joxe 6ae86d001d made number of phase neighbors configurable 2010-04-01 17:17:36 +00:00
fros4943 59357e8b75 PRINTF():ed debugging output 2010-04-01 11:08:36 +00:00
adamdunkels cc11c9d3f2 Added missing #define 2010-04-01 10:56:00 +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 d7457bc340 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 10:03:19 +00:00
adamdunkels add426de4b Bugfixed stream mode: node listens 100% for 0.5 seconds in stream mode. Naming change: is_listening changed is_snooping. 2010-04-01 10:02:04 +00:00
adamdunkels 5b121b4829 Set stream bit only on non-FIN TCP segments 2010-04-01 10:01:01 +00:00
adamdunkels b43f7830b3 Fine-tuned the timing and phase lock optimization 2010-03-31 20:27:15 +00:00
adamdunkels 4e33112d3e Guard against malformed broadcast announcements 2010-03-31 12:17:24 +00:00
adamdunkels 877eb2fbe9 Fiddled with the timing 2010-03-31 11:54:38 +00:00
fros4943 3bd07ea55a bugfix: refresh correct source route 
+
refreshing gateway route whenever data is received via a gateway
 2010-03-31 09:38:42 +00:00
adamdunkels bcfa80102d Had previously not included the waiting time that the CC2420 introduces when sending a packet. Also increased the smallest packet size, just to be on the safe side. 2010-03-30 23:01:32 +00:00
adamdunkels 226abb8ec3 Removed non-existant include file 2010-03-29 22:10:03 +00:00
adamdunkels 4e3268e2e2 Added function that removes the header 2010-03-29 21:53:04 +00:00
adamdunkels 4c3b69dc07 Configuration parameter for number of MAC-layer retransmissions 2010-03-29 21:52:25 +00:00
adamdunkels 9c58768b59 Extend packet size after creating 802.15.4 header; prepare radio chip with packet before waiting for neighbor phase to make phase wait time deterministic 2010-03-29 21:51:36 +00:00
adamdunkels b4b7e942b6 Back off a guard time for every non-ack packet 2010-03-29 21:50:01 +00:00
oliverschmidt 315e446584 Adjusted formal parameter to single existing actual parameter. 2010-03-29 20:26:14 +00:00
fros4943 0fcbfae836 updated function: has_value argument was missing 2010-03-29 12:13:35 +00:00
fros4943 671629dea0 moved packet_sent function, it was in a HC06-specific unit 2010-03-29 11:48:09 +00:00
joxe bd6cd03c1d moved prefix to avoid compiler warning 2010-03-26 15:12:57 +00:00
nifi 9508d2c4d7 * Added configurable default number of transmissions for CSMA to use when not specified using packetbuf attributes (CSMA_CONF_MAX_MAC_TRANSMISSIONS). 
* Renamed packetbuf attribute PACKETBUF_ATTR_MAX_MAC_REXMIT to PACKETBUF_ATTR_MAX_MAC_TRANSMISSIONS where value 0 (attribute not set) means that default number of transmissions should be used.
 2010-03-26 12:29:29 +00:00
joxe bec1ccc57d added support for all UDP port compressions in hc06 2010-03-26 10:28:51 +00:00
nifi 0ec8d499e4 Bug fix: only call subscriber if set 2010-03-25 19:30:44 +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 2559e27414 API change to the announcement module: an annoucement can now be registered without a value. Such announcements are never transmitted to neighbors, until the announcement's value is set. 2010-03-25 08:49:56 +00:00
adamdunkels 4d68bdf74b Bugfix and addition by Dogan Yazar: psock_readbuf() shouldn't wait for a full buffer (which might never happen); a new function for sending strings that batches data and sends full buffers instead of individual strings. 2010-03-24 21:03:32 +00:00
nifi c623616afd Neighbor state notification also when adding new neighbors 2010-03-24 16:29:45 +00:00
nifi 052c8db9f9 Added option for neighbor state changed notifications 2010-03-24 16:16:33 +00:00
joxe 4a6c6b0534 added route_rm_by_nexthop and small code cleanup 2010-03-23 14:21:04 +00:00
fros4943 95e870cc46 bugfix: structs should be declared static 2010-03-22 11:32:29 +00:00
nvt-se 0eae63b29a Set a higher start ETX. Avoiding adding a neighbor after a failed packet transmission. 2010-03-19 16:55:29 +00:00
adamdunkels 9d06d84255 Renamed the neighbor module to collect-neighbor, as it is only used by the collect module and is not a generic neighbor module 2010-03-19 13:25:15 +00:00
adamdunkels 49009e9cbd Extend the length of announcement packets if they are too short 2010-03-19 13:24:58 +00:00
adamdunkels 2e8bfa5d9a Include new broadcast-announcement and renamed collect-neighbor in compilation 2010-03-19 13:21:24 +00:00
adamdunkels f2c9b3e813 Remove old neighbor.h inclusion 2010-03-19 13:20:40 +00:00
adamdunkels 3a5be4a7e4 Added broadcast announcement module and collect-neighbor module 2010-03-19 13:17:55 +00:00
adamdunkels 14453e9fb7 Slight API change to support bump functionality 2010-03-19 13:17:31 +00:00
adamdunkels 7b0606cd58 Renamed the neighbor module to collect-neighbor, as it is only used by the collect module and is not a generic neighbor module 2010-03-19 13:17:00 +00:00
adamdunkels 137e02baac Added a bump method that tells the announcement module that a value has changed sufficiently much for it to be pushed out quicker 2010-03-19 13:16:11 +00:00
adamdunkels 17db783fb0 Broadcast announcement back-end that sends announcement data as broadcasts, with increasing transmission intervals 2010-03-19 13:15:19 +00:00
nifi 7f7922a10d typos 2010-03-19 12:54:38 +00:00
joxe cf9acf4748 made it possible to have zero contexts to avoid stateful compression in hc06 2010-03-19 08:15:20 +00:00
joxe 17a721a7e4 fixed buggy define for Traffic class and Flowlabel compression 2010-03-17 20:57:25 +00:00
adamdunkels 115b3a7c5c Minor timing bugfix: the time between channel checks should not include the time required for the channel check itself 2010-03-17 18:24:06 +00:00
adamdunkels efeb9944fa Increase the required non-activity periods before turning off the radio; remove the strict phase requirement (which messes up things with low-power streaming) 2010-03-17 16:35:52 +00:00
nvt-se 1a9e00ab78 Purge neighbors that go over a configurable ETX limit. Increase the no-ACK penalty. 2010-03-17 15:08:46 +00:00
nvt-se 4e0ceedc47 Enabled external neighbor removal 2010-03-17 15:00:52 +00:00
fros4943 55f780ec19 removed debugging output 2010-03-17 14:36:46 +00:00
joxe 4f27fcf766 added ipaddr variable if not UIP_ROUTER is defined 2010-03-17 12:30:25 +00:00
joxe e8916fe01f added hooks for adding an external header compressor 2010-03-17 12:08:59 +00:00
joxe d113577a8e made UIP_ND6_SEND_RA configurable from platforms and projects 2010-03-16 18:27:22 +00:00
adamdunkels 36b995cc9a Reenabled announcement support 2010-03-16 18:12:34 +00:00
adamdunkels 9be1a65211 Don't set the RELIABLE flag on incoming packets with the ack requested flag set, since it is set on most packets even if they aren't reliable 2010-03-16 18:11:58 +00:00
adamdunkels b1feac5a00 Bugfixes in low-power streaming mode, and re-added support for announcements. These now use the low-power streaming mode so that active listening for announcments have a radio duty cycle of 16% rather than 100% 2010-03-16 18:11:13 +00:00
nifi 6b7ec2d002 removed uip_router 2010-03-16 15:45:20 +00:00
nifi 75091661e6 fixed typo 2010-03-16 15:41:00 +00:00
joxe b4adc6bcb5 added fallback interface and removed uip_router 2010-03-16 15:35:03 +00:00
joxe 2b44f809fb added support for extending route entries 2010-03-16 14:11:46 +00:00
joxe 453cf7f2e6 refactoring of hc06 code 2010-03-16 10:21:04 +00:00
nvt-se 7f687b99e6 Debug off by default 2010-03-15 19:22:29 +00:00
joxe fd3d6c44d0 integration of new uip6 code from Mathilde and Julien - adds routing and improved interface handling 2010-03-15 16:41:24 +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 7bab9316da Two major changes: 
* Low-power streaming. Experimental support for a low-power mode which
  allows rapid exchange of packets with a 16% duty cycle. Does not
  seem to function correctly yet though.

* Phase locking. When the phase of a neighbor has been detected, the
  sender assumes that the neighbor will keeps it phase and does not
  send more strobes than necessary to hit the receiver's channel
  check - even if the receiver does not acknowledge the reception of
  the strobes when it should have been awake. Instead, the sender
  stops strobing and tries again at a later time.
 2010-03-14 22:59:23 +00:00
oliverschmidt def540e6c0 Avoid newlines in macro expansions as cc65 doesn't support them between the macro name and the open parenthesis of the arguments. 
There were btw other even longer lines with expansions of the same macro already present.
 2010-03-14 12:13:54 +00:00
joxe e8bd53cfd8 added typedef of icmp6_error 2010-03-13 09:25:24 +00:00
dak664 0236c6e725 Leave compiler warning for 16 bit timers 2010-03-12 17:51:07 +00:00
joxe 4c2daf9886 started integration of Mathildes and Juliens new uip6 code + made some ND timers configurable 2010-03-12 16:19:19 +00:00
dak664 7c5eed6bda Add includes needed by AVR-gcc, fix compiler warning 2010-03-12 15:23:57 +00:00
dak664 52c9f4bde3 Remove compiler warning 2010-03-12 15:21:14 +00:00
nifi 2cf0fb9cce Changed to use short address mode with short rime addresses 2010-03-12 14:49:21 +00:00
nvt-se 6be0bac1a1 minor include fix + added documentation 2010-03-12 13:40:13 +00:00
nvt-se 881fac7f50 fixed comment 2010-03-12 13:25:14 +00:00
nvt-se 6ce15b14c9 prepend net/ to include paths 2010-03-12 13:23:50 +00:00
nvt-se c316fc2fa9 Make it possible to provide feedback to the neighbor modules 2010-03-12 13:20:13 +00:00
nvt-se 814dd8bf59 Added generic modules for neighbor information. 2010-03-12 13:19:45 +00:00
joxe d75ec2da53 fixed so that uip6 sends icmp6 errors from correct source when acting as router - improves support for tracert, etc. 2010-03-11 18:07:37 +00:00
adamdunkels 90bb63a383 Set the (correct) packet attribute to let the MAC layer perform retransmissions 2010-03-09 20:40:50 +00:00
adamdunkels 4b60301727 Don't set the ack flag for broadcast packets 2010-03-09 20:40:11 +00:00
adamdunkels 17f6b3a324 Simplified the structure of the code 2010-03-09 20:38:55 +00:00
adamdunkels d0e6436a20 Don't call up the netstack if the transmission was deferred 2010-03-09 20:37:02 +00:00
c_oflynn dc3e6c1877 Fix TC/FL errors in hc-06. Need to verify further 2010-03-09 16:19:44 +00:00
joxe 48a9bff889 added support for dropping packets if hop limit is reached 2010-03-09 15:50:15 +00:00
c_oflynn 1d483a5da4 Fix UDP compression to work per hc-06. More commits to come to fix Traffic Class stuff... 2010-03-09 15:18:03 +00:00
adamdunkels edda6dd86c Minor bugfix: don't subtract collisions and deferrals from the number of transmissions 2010-03-09 13:23:58 +00:00
adamdunkels 5a6fc2ade0 Bugfix: set up rtmetric before starting to announce it. Set the number of MAC layer retransmissions correctly 2010-03-09 13:21:28 +00:00
adamdunkels 2c3d3e3d73 Bugfix: handle deferred transmissions correctly (don't count them) 2010-03-09 13:20:08 +00:00
adamdunkels 79722b4247 Rework of the timing conditions of ContikiMAC: the old timing did not work well on real hardware, the new one seems to work better 2010-03-09 13:19:05 +00:00
nvt-se 96eb20d235 forward arguments even if REXMIT is not set 2010-03-04 14:17:43 +00:00
dak664 c65e09ceb2 Remove compiler warnings 2010-03-02 15:41:23 +00:00
nifi 5e43a6998b Replaced old framer (framer_get/framer_set) with new NETSTACK style configuration. Added nullrdc-framer that is a nullrdc with framer support. 2010-03-01 13:30:21 +00:00
nifi 0c084b8c68 added random init of sequence number 2010-03-01 13:17:01 +00:00
adamdunkels 524625dfd2 Removed debug string names of packet attribtues 2010-02-28 20:20:19 +00:00
adamdunkels 410d860a93 Improved handling of neighbor phase estimation: instead of busy-waiting while waiting for neighbor's phase, the new code schedules a timer just before neighbor wakes up 2010-02-28 20:19:47 +00:00
adamdunkels e6fceb7200 Added MAC-layer return value to indicate that a packet transmission was deferred 2010-02-28 20:18:30 +00:00
adamdunkels ec928a2a19 Make max queueing time depend on retransmission timeout 2010-02-28 14:15:58 +00:00
adamdunkels e06acc4525 Prod the watchdog if waiting for along time 2010-02-28 14:15:16 +00:00
adamdunkels 74da90a06b Don't count collisions as transmissions 2010-02-28 10:07:17 +00:00
adamdunkels f95a6cce85 Added function for obtaining packet queue length 2010-02-28 09:20:32 +00:00
adamdunkels 8fe15f7b45 New packet attribute for specifiying MAC layer retransmissions; reorder and commented packet attributes 2010-02-28 09:19:43 +00:00
adamdunkels 970a9eb9c7 Increased neighbor lifetime to allow for longer neighbor announcement intervals 2010-02-28 09:19:04 +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 b6b4941871 Made the number of MAC-layer retransmissions configurable on a per-packet basis, via a packet attribute 2010-02-28 08:35:16 +00:00
adamdunkels ed88f487c8 Improved detection of link-layer ACKs; increased the time ContikiMAC waits when it has detected a link-layer ACK; increased the number of silence periods required to detect a CCA false positive 2010-02-28 08:33:21 +00:00
adamdunkels fa1a96636e Bugfix: the compile-time check for UIP_LLADDR_LEN previously generated a run-time error, when it should have generated a compile-time error 2010-02-28 08:30:39 +00:00
adamdunkels ba0e50a7b7 Set the default number of MAC layer retransmissions for IPv6 packets to 2 2010-02-28 08:29:42 +00:00
joxe 0ab2bc9a31 upgraded sicslowpan to hc-06 - no 48 bit multicast compression support yet 2010-02-25 15:50:58 +00:00
nifi b50d47fb80 added missing function in sicslowmac_driver 2010-02-23 22:45:11 +00:00
nifi 1cfcc8a73a Removed the combined name of CSMA and NETSTACK_RDC. The name of NETSTACK_RDC can be accessed separately if needed. 2010-02-23 20:42:45 +00:00
nifi c20047f657 Changed the network stack to use different structures for the different layers (network_driver, mac_driver, rdc_driver, radio_driver). This helps to avoid incorrect configuration. 2010-02-23 20:09:11 +00:00
adamdunkels bb62749de7 Made debug printfs optional 2010-02-23 18:49:58 +00:00
adamdunkels 0ab2ba433f Bugfix: the wrong callback pointer was passed to higher layers. 2010-02-23 18:49:45 +00:00
adamdunkels ed52586e18 Rework of parts of the ContikiMAC code based on input from experimental results. When channel check is triggered because of a false positive, the new version checks the radio several times to make sure that there really is an incoming packet. Otherwise, the radio is switched off. Cleaned up and removed old unused code. Added a few temporary debugging mechanisms and functions. 2010-02-23 18:49:05 +00:00
adamdunkels ca0417a923 Added the MAC layer callback functionality so that the Rime network layer gets information from the MAC about the status of sent packets: were they successfully transmitted, or was there a collisions? How many retries were there? 2010-02-23 18:38:05 +00:00
adamdunkels f10eedab3e Added debug printout 2010-02-23 18:37:15 +00:00
adamdunkels 2d13fecea7 Improved backoff management: timer is now doubled on every transmission, until the using module calls the neighbor_discovery_start() function again. Don't cancel the transmission even if a lower value arrives (this fixes a problem with multi-hop ETX propagaion). 2010-02-23 18:36:50 +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 a4d9d6651b Added the option to specify the old value to observers so that they can determine if the announcement should be sent out quicklier than otherwise 2010-02-23 18:32:44 +00:00
adamdunkels b746b7fc06 Reworked the Rime/Chameleon interface so that packets now always hit Rime before Chameleon. Chameleon is now only called by Rime. This makes packet sniffing easier, and allows for sniffing packets after their header has been processed by Chameleon, thereby making per-packet power profiling much easier to implement 2010-02-23 18:29:53 +00:00
adamdunkels d8cce42d28 Set the default radio driver to nullradio 2010-02-23 18:28:04 +00:00
adamdunkels 0b2b7bcdba Removed inadvertedly left-over include file 2010-02-18 23:52:34 +00:00
adamdunkels 5cf3b83733 Common initialization code for the netstack 2010-02-18 23:15:26 +00:00
adamdunkels f49ebfe1c4 Temporarily disabled rime route udp because it breaks with newest MAC interfaces 2010-02-18 21:53:08 +00:00
adamdunkels e34eb54960 A work-in-progress rework of the Contiki MAC and radio layers. The 
main ideas are:

* Separates the Contiki low-layer network stack into four layers:
  network (e.g. sicslowpan / rime), Medium Access Control MAC
  (e.g. CSMA), Radio Duty Cycling RDC (e.g. ContikiMAC, X-MAC), and
  radio (e.g. cc2420).
* Introduces a new way to configure the network stack. Four #defines
  that specify what mechanism/protocol/driver to use at the four
  layers: NETSTACK_CONF_NETWORK, NETSTACK_CONF_MAC, NETSTACK_CONF_RDC,
  NETSTACK_CONF_RADIO.
* Adds a callback mechanism to inform the MAC and network layers about
  the fate of a transmitted packet: if the packet was not possible to
  transmit, the cause of the failure is reported, and if the packets
  was successfully transmitted, the number of tries before it was
  finally transmitted is reported.
* NULL-protocols at both the MAC and RDC layers: nullmac and nullrdc,
  which can be used when MAC and RDC functionality is not needed.
* Extends the radio API with three new functions that enable more
  efficient radio duty cycling protocols: channel check, pending
  packet, and receiving packet.
* New initialization mechanism, which takes advantage of the NETSTACK
  #defines.
 2010-02-18 21:48:39 +00:00
adamdunkels f8c804e28b ntikiMAC: a new radio duty cycling mechanism that uses a combination 
of link-layer and MAC-layer mechanisms to achieve a very low power
consumption: during idle listening the radio is switched off between
99.2% and 99.6% of the time. One unicast transmission typically adds
between 0.07% and 1.2% additional radio time, depending on packet
size.

ContikiMAC uses the standard IEEE 802.15.4 message format and adds no
additional headers.

ContikiMAC is simple: it uses periodic two-shot channel sampling
during idle listening to keep the radio on-time down. Transmissions
are done with repeated transmissions until a link-layer ACK is
received.
 2010-02-18 21:26:15 +00:00
adamdunkels f5c48751b5 Reworked 802.15.4 header creation and parsing so that it works regardless of the size of the rimeaddr_t typedef 2010-02-18 21:00:28 +00:00