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* irmd: Revise IRMd internalsDimitri Staessens2024-02-192-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | This is a full revision of the IRMd internal implementation. The registry is now a proper subcomponent managing its own internal lock (a single mutex). Some tests are added for the registry and its data structures. Some macros for tests are added in <ouroboros/test.h>. Flow allocation is now more symmetric between the client side (alloc) and server size (accept). Each will create a flow in pending state (ALLOC_PENDING/ACCEPT_PENDING) that is potentially fulfilled by an IPCP using respond_alloc and respond_accept primitives. Deallocation is split in flow_dealloc (application side) and ipcp_flow_dealloc (IPCP side) to get the flow in DEALLOC_PENDING and DEALLOCATED state. Cleanup of failed flow allocation is now properly handled instead of relying on the sanitizer thread. The new sanitizer only needs to monitor crashed processes. On shutdown, the IRMd will now detect hanging processes and SIGKILL them and clean up their fuse mountpoints if needed. A lot of other things have been cleaned up and shuffled around a bit. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update licenses to 2024Dimitri Staessens2024-01-138-9/+9
| | | | | | | Slow but steady. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* include: Revise printing hashesDimitri Staessens2023-08-232-0/+183
| | | | | | | | | | | The code was a bit convoluted to print hashes as hex strings. Renamed to HASH_FMT32 and HASH_VAL32 to make clear we are printing the first 32 bits only, and added options to print 64 up to 512 bits as well. This doesn't depend on endianness anymore. Adds a small test for the hash (printing) functions. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Fix memleak in bitmap testDimitri Staessens2023-05-121-12/+13
| | | | | | | There was a missing bmp_destroy, refactored exiting after a failure. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update copyright to 2023Dimitri Staessens2023-02-137-7/+7
| | | | | | | 2022 was a rather slow year... Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update copyright to 2022Dimitri Staessens2022-04-037-7/+7
| | | | | | | Growing pains. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update email addressesDimitri Staessens2021-01-037-14/+14
| | | | | | | | The ugent email addresses are shut down, updated to Ouroboros mail addresses. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update copyright to 2021Dimitri Staessens2021-01-037-7/+7
| | | | | | | Happy New Year, Ouroboros! Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Fix shm_rbuff testDimitri Staessens2020-02-161-0/+8
| | | | | | | | | The rbuff_destroy function asserts that we do not try to destroy an rbuff that still contains packets. The test now empties the rbuff before destroying it. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Move hashtable from lib to unicastDimitri Staessens2020-02-162-130/+0
| | | | | | | | | | The hashtable is only used for forwarding tables in the unicast IPCP. This moves the generic hashtable out of the library into the unicast IPCP to prepare a more tailored implementation specific to routing tables containing address lists. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update copyright to 20200.16.0Dimitri Staessens2020-01-028-8/+8
| | | | | Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Add tests for the shm_rbuffDimitri Staessens2019-06-212-0/+106
| | | | | | | | | This adds some tests for the shm_rbuff after some reports that the queue length would be erroneously reported as 0 when the rbuff was full. The test passes for the reported case. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update copyright to 2019Dimitri Staessens2019-02-057-7/+7
| | | | | | | Updates the copyright notice in all sources to 2019. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Support for rudimentary retransmissionDimitri Staessens2018-07-272-111/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | This adds rudimentary support for sending and processing acknowledgments and doing retransmission. It replaces the generic timerwheel with a specific one for retransmission. This is currently a fixed wheel allowing retransmissions to be scheduled up to about 32 seconds into the future. It currently has an 8ms resolution. This could be made configurable in the future. Failures of the flow (i.e. rtx not working) are indicated by the rxmwheel_move() function returning a fd. This is currently not yet handled (maybe just setting the state of the flow to FLOWDOWN is a better solution). The shm_rdrbuff tracks the number of users of a du_buff. One user is the full stack, each retransmission will increment the refs counter (which effectively acts as a semaphore). The refs counter is decremented when a packet is acked. The du_buff is only allowed to be removed if there is only one user left (the "stack"). When a packet is retransmitted, it is copied in the rdrbuff. This is to ensure integrity of the packet when multiple layers do retransmission and it is passed down the stack again. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Remove rq testsDimitri Staessens2018-06-042-116/+0
| | | | | | | The rq was removed in a previous commit. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Fix memleak in hashtable testDimitri Staessens2018-06-041-0/+1
| | | | | | | The element was not freed if insertion failed. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* include, src: Update copyright to 2018Dimitri Staessens2018-01-099-9/+9
| | | | | | | Happy New Year, Ouroboros. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Refactor FRCT implementationDimitri Staessens2017-11-071-1/+1
| | | | | | | | | | | | | | | | | | | | The frct_pci and rq headers are moved from include/ouroboros to src/lib since they are only needed in the library. FRCT is moved to its own source file. FRCT takes the application PDUs, encapsulates and processes them and hands them back. This makes it easier to disable FRCT should the application want to write to a "raw" flow. An FRCT instance is now allocated upon alloc and released upon dealloc. The FRCT data structure is split into a sender and receiver connection record. Setting a new configuration will now be done upon sending the next data PDU, which will flag the DRF for a new run and use that configuration. This avoids some issues should packets arrive out-of-order, and simplifies setting a configuration. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Deprecate ouroboros_init and ourboros_finidimitri staessens2017-10-141-1/+1
| | | | | | | | | | | | | | This commit deprecates ouroboros_init and ouroboros_fini and adds them as a constructor or destructor, causing these function to be run automatically when a program that links to the library calls and exits main(). For this to fully work, the library had to be split so that we can avoid the irmd calling these functions (the IRMd has to create the shm structures on which these calls depend). The library is split in 3 parts: libouroboros-dev, libouroboros-irm and libouroboros-common. The latter is linked to the other two so that including libouroboros-dev or libouroboros-irm will also link libouroboros-common.
* ipcpd: normal: Add alternate hop PFFSander Vrijders2017-09-211-11/+12
| | | | | This adds a PFF that returns an alternate hop as next hop in case the hop that would have been returned is down.
* lib: Add reordering queue to FRCTSander Vrijders2017-09-152-0/+116
| | | | | This adds a reordering queue to FRCT so that SDUs can be delivered in-order when requested.
* ipcpd: Revise internals of normal IPCPdimitri staessens2017-09-122-290/+0
| | | | | | | | This removes the RIB as a datastructure and CDAP as the protocol between IPCPs. CDAP, the rib and related sources are deprecated. The link-state protocol policy is udpated to use its own protocol based on a simple broadcast strategy along a tree. The neighbors struct is deprecated and moved to the library as a generic notifier component.
* lib: Make timerwheel a passive componentSander Vrijders2017-08-221-4/+2
| | | | | | This turns the timerwheel into a passive component since it is used by application using the library. The user of the timerwheel now has to call timerwheel_move to advance the timerwheel.
* build: Revise the build systemdimitri staessens2017-08-212-2/+9
| | | | | | | | | | This revises the build system to have configuration per system component. System settings can now be set using cmake. The standard compliance defines were removed from configuration header and are set in the sources where needed. Also some small code refactors, such as moving the data for shims out of the ipcp structure to the respective shims were performed.
* lib: Add basic FRCT mechanismsSander Vrijders2017-08-172-0/+107
| | | | | | | | | | This adds the basic FRCT mechanisms to the library. Upon flow alloc or accept an FRCT instance is now created and used when reading or writing to the flow. The timerwheel has been refactored to allow recharging timers and removing them and is now part of the library. The first SDU sent over the connection has the DRF set and this initializes the connection. Sender and receiver inactivity timers are added.
* build: Replace fsf snail mail with contact URLdimitri staessens2017-08-138-8/+8
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* build: Fix compilation on OS X Sierradimitri staessens2017-08-112-1/+2
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* build: Add check for robust mutexesSander Vrijders2017-08-031-2/+2
| | | | | | This adds a check for robust mutexes. The constant HAVE_ROBUST_MUTEX is set accordingly in config.h. It also adds some other fixes to make the prototype compile on the Hurd.
* lib: Fix bug and add test for time_utilsdimitri staessens2017-07-052-0/+165
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* lib: Fix bug in bitmapdimitri staessens2017-05-241-2/+13
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* lib: Add implementation for MD5 hashesdimitri staessens2017-04-162-0/+153
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* lib: Fix minor things in sha3 implementationdimitri staessens2017-04-161-0/+37
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* lib, ipcpd, irmd: Register hash instead of namedimitri staessens2017-04-132-51/+51
| | | | | | | | | All information passed over the IRMd/IPCP boundary for using IPC services (flow allocation, registration) is now hashed. This effectively fixes the shared namespace between DIFs and the IRMDs. This PR also fixes some API issues (adding const identifiers), shuffles the include headers a bit and some small bugs.
* lib: Add a check if a bitmap ID is in usedimitri staessens2017-04-011-9/+26
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* lib: Fix bugs in B-treeSander Vrijders2017-03-311-5/+29
| | | | | This fixes some bugs in the B-tree implementation. The test has also been rewritten to be more thorough.
* ipcpd: normal: Fill in forwarding tableSander Vrijders2017-03-241-8/+2
| | | | | | The routing now takes the results of the routing table to fill in the forwarding table, by going through the neighbors and filling in the right fd.
* Change email addresses to ugent.beSander Vrijders2017-03-036-6/+12
| | | | | | | Our mailserver was migrated from intec.ugent.be to the central ugent.be emailserver. This PR updates the header files to reflect this change as well. Some header files were also homogenized if the parameters within the functions were badly aligned.
* build: Format CMakeLists.txt filesSander Vrijders2017-03-031-10/+10
| | | | The CMakeLists files are now properly indented.
* ipcpd: Move RIB configuration to common headerdimitri staessens2017-02-171-0/+2
| | | | | Moves the definitions of paths in the RIB for the normal IPCP to a header ribconfig.h to avoid repetition.
* lib: Fix bug in rib_testdimitri staessens2017-02-091-1/+1
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* lib: Add packing and unpacking RIBdimitri staessens2017-01-311-0/+39
| | | | | | | | | | | | | | | | | | | The rib_pack function allows packing a subtree of the RIB for dissemination. The options PACK_HASH_ROOT and PACK_HASH_ALL will add the hashes for the root object of the packed subtree or every object to the packed message respectively. Checking of the hashes is currently only performed at the top level object, verifying the complete operation. The rib_unpack function unpacks a packed message and inserts its contents in the RIB. The option UNPACK_CREATE flags that the unpack operation is allowed to create new objects, else it will only update existing objects. More advanced options could be added in the future. The packed message structure uses Google Protocol Buffers, as defined in ro.proto. It adds tests for these functions to the rib_test.
* lib: Add function to get children of node in RIBdimitri staessens2017-01-291-0/+24
| | | | | Returns the names of the nodes (not the full paths). The function allocates memory to the children pointer that should be freed.
* lib: Add new version of Resource Information Basedimitri staessens2017-01-212-0/+223
| | | | | | | | | | | | The new RIB is implemented as a tree with doubly linked nodes (parents keep a link to each child, each child keeps a link to its parent). An index is kept in a btree using CRC32 hashes of the path name in the RIB. Nodes keep an SHA3-256 hash value that is unique for the entire subtree. This allows quick checks to see if two RIB subtrees are in sync. The event system for the RIB is based on the event system for flows (fqueue), but implemented completely in dynamic memory using linked lists. An initial test is performed for the RIB. This PR does not modify existing code to use the new RIB.
* lib: Add B-tree implementationdimitri staessens2017-01-162-0/+81
| | | | | Adds an implementation of B-trees of order k (k children, min fill is k/2, max fill k - 1). Useful to implement indexes for faster lookups.
* lib: Add test for crc32 functiondimitri staessens2017-01-152-0/+72
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* lib: Add test for SHA-3 functiondimitri staessens2017-01-132-0/+296
| | | | Test the SHA3 function with known hashes.
* build: Update licenses and copyrightdimitri staessens2017-01-092-2/+2
| | | | | Copyright is set to 2016 - 2017. License text on includes and sources in the library are changed to indicate the LGPLv2.1 license.
* ouroboros: Correct license statementsdimitri staessens2016-12-242-6/+4
| | | | | This corrects the license statements on all files. Installed headers are LGPLv2.1, the rest of the code is GPLv2.
* lib, ipcpd: Add hashtable and PDU Forwarding FunctionSander Vrijders2016-12-212-0/+134
| | | | | | | This adds a hash table that takes 64-bit integers as key and uses separate chaining on collision. It also adds the PDU Forwarding Function, which the Flow Manager can use to lookup the fd towards the next hop. Routing policies will add/update/remove entries in the PFF.
* build: Comply with -Wextra compiler flagdimitri staessens2016-10-211-0/+3
| | | | | This reduces the risk for some bugs, for instance due to signed/unsigned mismatches and unused variables.
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