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* ipcpd: Mitigate race in wait_req_arr and wait_respDimitri Staessens2024-02-261-6/+15
| | | | | | | | | | | | | | | | | | | | The wait_flow_req_arr and wait_flow_resp functions are there to ensure the responses of the IRMd to flow allocation requests arrive in the correct order. These functions use a mutex: alloc_lock. After these functions return, the IPCP will switch to it's own (usually read-write) lock. In the local IPCP, this leaves room for a race where the state of the flow is accessed in alloc_resp before it is updated in wait_flow_req_arr. This race is only visible in the local IPCP, as the other IPCP have to send information between these calls, but it is theoretically possible when using any IPCP for local IPC. In the ipcpd-local, it happens ~0.01% to ~0.03% of flow allocations. This mitigates the problem in the ipcpd-local by adding a 1ms wait to the flow allocation if this race is detected. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* irmd: Fix flow deallocation timeoutDimitri Staessens2024-02-261-3/+9
| | | | | | | | The timeout was set to a value calculated as abstime for a cond_wait instead of a timeout, causing flows to linger in the IPCP. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* lib: Revise app flow allocationDimitri Staessens2024-02-231-11/+9
| | | | | | | | | | | | | This revises the application flow allocator to use the flow_info struct/message between the components. Revises the messaging to move the use protocol buffers to its own source (serdes-irm). Adds a timeout to the IRMd flow allocator to make sure flow allocations don't hang forever (this was previously taken care of by the sanitize thread). Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* irmd: Revise IRMd internalsDimitri Staessens2024-02-191-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* include: Use common definition between lib and IRMdDimitri Staessens2024-01-311-1/+1
| | | | | | | | Some definitions/enums were different between the library and IRMd (flow_state, ipcp_state). This moves them to common ground. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update licenses to 2024Dimitri Staessens2024-01-131-1/+1
| | | | | | | Slow but steady. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* include: Rename layer.layer_name to layer.nameDimitri Staessens2023-11-291-1/+1
| | | | | | | | The layer_info had a member layer_name which is a bit redundant. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Revise loggingDimitri Staessens2023-08-301-7/+4
| | | | | | | | This revises the logging in the IPCPs to be a more consistent and reduce duplicate messages in nested functions. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Move alloc race mitigation to common sourceDimitri Staessens2023-08-301-54/+4
| | | | | | | | | | All flow allocator code was duplicating the mitigation for a race where the IRMd response for the flow allocation with a new flow fd was arriving before the response to the flow_req_arr. This is now moved to the ipcp common source. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Set IPCP states in common sourcesDimitri Staessens2023-08-301-2/+0
| | | | | | | | The state of the IPCP was set and checked in the main files, but it's more convenient to do it in the common source. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* include: Revise printing hashesDimitri Staessens2023-08-231-5/+6
| | | | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Use consistent function namingDimitri Staessens2023-03-241-23/+24
| | | | | | | | | | For instance ipcp_udp_* vs eth_ipcp_*. Now all functions are <type>_ipcp_*. Als cleans up some minor things. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: refactor IPCP configurationDimitri Staessens2023-02-131-5/+1
| | | | | | | | | | The ipcp configuration struct now has internal structures for the different IPCPs and for IPCP components of the unicast IPCP. Split the very long IPCP main loop into individual handler functions. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update copyright to 2023Dimitri Staessens2023-02-131-1/+1
| | | | | | | 2022 was a rather slow year... Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Refactor main functionsDimitri Staessens2022-07-131-14/+8
| | | | | | | | | | | | | | | | | | | The structure of main functions of the IPCPs was a bit strange with a ipcp_shutdown() call that combined waiting for a terminating signal with stopping the internal threads. This is now revised into a symmetrical design of ipcp_start(), which now includes the create response towards the IRMd. ipcp_sigwait(), which waits for a shutdown signal ipcp_stop() that then stops the internal threads. Now the main() functions of the IPCPs will make sense without checking what that ipcp_shutdown() functions actually does. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Fix deadlock on exit in udp, local, ethDimitri Staessens2022-05-221-2/+2
| | | | | | | | | | | The IPCP flow_set was getting destroyed with the IPCP main loop still running, causing potential deadlocks. Reported-by: Thijs Paelman Confirmed-by: Dimitri Staessens <[email protected]> Tested-by: Dimitri Staessens <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update copyright to 2022Dimitri Staessens2022-04-031-1/+1
| | | | | | | Growing pains. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipdpd: Pass MPL to application at flow_allocationDimitri Staessens2022-03-082-2/+7
| | | | | | | | | | | | The maximum packet lifetime (MPL) is a property of the flow that needs to be passed to the reliable transmission protocol (FRCP) for its correct operation. Previously, the value of MPL was set fixed as one of the (fixed) Delta-t parameters. This patch makes the MPL a property of the layer, and it can now be set per layer-type at build time. This is a step towards a proper MPL estimator in the flow allocator. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Fix some unchecked return valuesDimitri Staessens2022-03-031-12/+16
| | | | | | | Fixes some unchecked and wrongly checked return values. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Move RIB initialization to common groundDimitri Staessens2021-06-211-2/+7
| | | | | | | | | | | | | | This moves Resource Information Base (RIB) initialization into the ipcp_init() function, so all IPCPs initialize a RIB. The RIB not shows some common IPCP information, such as the IPCP name, IPCP state and the layer name if the IPCP is part of a layer. The initialization of the hash algorithm and layer name was moved out of the common ipcp source because IPCPs may only know this information after enrollment. Some IPCPs were not even storing this information. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update email addressesDimitri Staessens2021-01-031-2/+2
| | | | | | | | The ugent email addresses are shut down, updated to Ouroboros mail addresses. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update copyright to 2021Dimitri Staessens2021-01-031-1/+1
| | | | | | | Happy New Year, Ouroboros! Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Add support for GCC 100.17.5Dimitri Staessens2020-05-231-0/+2
| | | | | | | | | GCC 10 defaults to -fno-common, so some variables that were defined in the headers needed to be declared "extern". The GCC 10 static analyzer can now be invoked using the DebugAnalyzer build option. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Remove some unused variables0.17.4Dimitri Staessens2020-05-021-2/+1
| | | | | | | The compiler spotted some variables that weren't really used. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* lib, ipcpd: piggyback ECDHE on flow allocationDimitri Staessens2020-02-251-6/+9
| | | | | | | | | | | The initial implementation for the ECDHE key exchange was doing the key exchange after a flow was established. The public keys are now sent allowg on the flow allocation messages, so that an encrypted tunnel can be created within 1 RTT. The flow allocation steps had to be extended to pass the opaque data ('piggybacking'). Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Filter fqueue events in packet handlersDimitri Staessens2020-01-251-0/+3
| | | | | | | | | | The eth, udp and local IPCPs were not filtering out the event types from the flow, causing some reads when there are no packets in the queue. The types are now also organized as flags so they can be filtered more quickly if needed. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update copyright to 20200.16.0Dimitri Staessens2020-01-021-1/+1
| | | | | Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Refactor create_r and flow_req_arrDimitri Staessens2019-03-041-18/+17
| | | | | | | | | | | The API calls for the IPCP to inform the IRMd of IPCP creation and incoming flow request had the pid_t in the call. This pid_t is removed and the getpid() call is now placed inside the function. Also refactors the cleanup for the main() functions of some of the lower IPCPs. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update copyright to 2019Dimitri Staessens2019-02-051-1/+1
| | | | | | | Updates the copyright notice in all sources to 2019. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* include: Add a flow_join operation for broadcastDimitri Staessens2018-12-271-0/+1
| | | | | | | | | | | | This adds a new flow_join operaiton for broadcast, which is a much safer solution than overloading destination name semantics. The internal API now also has a different IPCP_FLOW_JOIN operation. The IRMd doesn't need to query broadcasts IPCPs for the name, it can just check if an IPCP with the layer name exists. The broadcast IPCP doesn't need to implement the query proxy call anymore. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd, lib, irmd, tools: Change SDU to packetSander Vrijders2018-10-051-6/+6
| | | | | | | | This will change SDU (Service Data Unit) to packet everywhere. SDU is OSI terminology, whereas packet is Ouroboros terminology. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* lib: Pass qosspec at flow allocationDimitri Staessens2018-10-051-2/+2
| | | | | | | | | | | | The flow allocator now passes the full qos specification to the endpoint, instead of just a cube. This is a more flexible architecture, as it makes QoS cubes internal to the layers. Adds endianness transforms for the flow allocator protocol in the normal IPCP. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* include: Remove _DEFAULT_SOURCE in endian.hDimitri Staessens2018-09-271-0/+4
| | | | | | | | This removes the _DEFAULT_SOURCE definition in the endian header as it should not be there. This avoids double and conflicting definitions. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Enable locking threads to a CPU coreDimitri Staessens2018-04-051-0/+2
| | | | | | | | | This adds a function that locks a thread to a random core. This greatly improves performance on multi-cpu systems. There is no portable way to do this, this only implements it for GNU/Linux. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Use GNUInstallDirs instead of hardcoded values0.9.9Sander Vrijders2018-02-061-1/+1
| | | | | | | | This changes the build to use GNUInstallDirs instead of hardcoded values. Package maintainers can then override these defaults by passing the correct value to cmake on the command line. Signed-off-by: Sander Vrijders <[email protected]>
* include, src: Update copyright to 2018Dimitri Staessens2018-01-091-1/+1
| | | | | | | Happy New Year, Ouroboros. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Use the term "layer" and deprecate "shim"Dimitri Staessens2017-12-191-2/+2
| | | | | | | | | | | | | | This changes the terminology to use layer instead of DIF and deprecate the word "shim" for the IPCPs that attach to Ethernet LLC and UDP .The terminology has not yet been changed in the variable names etc. This reflects the design choices in Ouroboros to make IPCPs pure resource allocators instead of also providing an "IPC service". The Ouroboros IPCPs that attach to Ethernet and UDP implement the allocator and are thus not really shims. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* lib, tools: Rename application process and instanceDimitri Staessens2017-12-021-1/+1
| | | | | | | | | | | This refactors ouroboros to use "program" instead of "application process" and "process" instead of "application process instance" to align with current naming in current Operating Systems courses instead of the ISO nomenclature adopted by RINA. This change permeates through the entire implementation. Also contains some minor other refactors. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Add options for debug builds with sanitizerDimitri Staessens2017-11-141-2/+2
| | | | | | | | | This adds three build types, DebugASan, DebugTSan and DebugLSan that enable the Address, Thread and Leak Sanitizer by setting the fsanitize flag to the compiler. This option is supported by both gcc and clang. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* lib: Deprecate ouroboros_init and ourboros_finidimitri staessens2017-10-142-2/+2
| | | | | | | | | | | | | | 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: Cancel threads in IPCPsdimitri staessens2017-09-211-9/+9
| | | | | | This reduces CPU consumption and shutdown times. Invalidates #43
* ipcpd, lib: Add flow down eventsSander Vrijders2017-09-191-10/+8
| | | | | | | | This adds the flow down event to Ouroboros. In the shim-eth-llc, a netlink socket is opened which listens to device up/down events. For each event the flow is then adjusted with fccntl to notify the user the flow is down or back up again. In the normal IPCP an event is thrown if a write reports that the flow is down.
* ipcpd: Add check if name was already registeredSander Vrijders2017-08-301-8/+1
| | | | | This adds a check in the shims if a name was already registered, since it should not return an error.
* dev: Revise fqueue API and add man pagesdimitri staessens2017-08-291-9/+9
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* tools: Add tool to connect IPCP componentsdimitri staessens2017-08-281-1/+3
| | | | | | | | | | | | This enables user-written tools to instruct IPCPs to establish and tear down connections (a.k.a. adjacencies) between its internal components (Management and Data Transfer). For more info, do "irm ipcp connect" or "irm ipcp disconnect" on the command line. This commit exposes a deletion bug in the RIB where FSO's fail to unpack/parse. This will be fixed when the RIB is deprecated.
* build: Revise the build systemdimitri staessens2017-08-212-11/+25
| | | | | | | | | | 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.
* build: Replace fsf snail mail with contact URLdimitri staessens2017-08-131-1/+1
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* ipcpd: Fix pthread_cond_timedwait deadlinesdimitri staessens2017-08-031-4/+14
| | | | | | This fixes pthread_condtimedwaits in the flow allocator of all IPCPs that had bad deadlines set (the interval instead of the actual absolute time).
* ipcpd, lib, irmd: Hardcode shim hash algorithmsSander Vrijders2017-07-121-1/+1
| | | | | | | This will hardcode the shim hash algorithms as they don't have an enrollment phase. Fixes #44
* include: Fix macro for printing hashdimitri staessens2017-06-041-1/+1
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