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* lib, irmd, ipcpd: Stabilize flow allocationdimitri staessens2017-04-041-28/+51
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* lib: Fix missing assignment in flow_allocdimitri staessens2017-03-311-5/+13
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* lib: Revise flow allocation APIdimitri staessens2017-03-311-135/+58
| | | | | | The flow_alloc_res and flow_alloc_resp calls have been removed. The flow_alloc and flow_accept calls are now both blocking and take an additional timeout argument.
* lib: Fix locks in dev.cdimitri staessens2017-03-291-7/+5
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* lib: Add queued SDUs when adding fd to flow_setdimitri staessens2017-03-211-0/+6
| | | | | This solves some race conditions where packets arrive on a flow before it is added to a flow_set.
* Change email addresses to ugent.beSander Vrijders2017-03-031-2/+2
| | | | | | | 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.
* lib: Remove application entity nameSander Vrijders2017-02-241-22/+2
| | | | | The AE name should not be passed over the layer boundaries. If an application has more than one AE it should exchange this in CACEP.
* ipcpd: Silent shutdown of normaldimitri staessens2017-02-101-0/+5
| | | | | The acceptor will not log disconnects with IRMd. Unexpected disconnects will be reported and handled by management components.
* ipcpd, lib: Report IPCP creation failuredimitri staessens2017-02-091-33/+82
| | | | | | | | The IPCP will now respond with an ipcp_create_r message when it fails, informing the IRMd. Also adds some const qualifiers in the public headers and fixes some formatting in dev.c.
* lib: Fix reading from non-blocking flowsdimitri staessens2017-01-241-4/+3
| | | | | The -EAGAIN from a failed non-blocking flow read would trigger the assertion. This snuck in somehow (we need some unit tests for dev.c).
* lib: Fix return value and typo in fqueuedimitri staessens2017-01-201-1/+1
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* build: Update licenses and copyrightdimitri staessens2017-01-091-10/+11
| | | | | Copyright is set to 2016 - 2017. License text on includes and sources in the library are changed to indicate the LGPLv2.1 license.
* lib, ipcpd, irmd: Proof of concept QoSdimitri staessens2017-01-031-18/+42
| | | | | | | | | | Now correctly relays the qoscube end-to-end in the stack. A simple function specifying the cube in the spec is used for initial testing. The translation is now done in dev.c, but it could be moved elsewhere when qos cabability matures and the need arises.
* include, lib: Report communication failure with the IRMddimitri staessens2016-12-281-31/+11
| | | | | | | An errno EIRMD has been added to errno.h to indicate failure to send a message tot the IRMd. The IRM tool will report such errors, which makes it easier for users to detect that the IRM was not started or has failed.
* lib: Fix shutdown in multithreaded programsdimitri staessens2016-12-241-6/+6
| | | | | If a thread with a pending flow terminates, ap_fini would wait for the condvar to destroy the flow indefinitely.
* lib: Initialise qos cube to best effortdimitri staessens2016-12-241-0/+2
| | | | | The QoS cubes were not initialized in dev.c, which sometimes caused segfaults in the fmgr when calling ipcp_flow_get_qoscube.
* ouroboros: Correct license statementsdimitri staessens2016-12-241-3/+2
| | | | | This corrects the license statements on all files. Installed headers are LGPLv2.1, the rest of the code is GPLv2.
* ipcpd, lib, irmd: Update to use qoscube_tdimitri staessens2016-12-241-5/+3
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* src, tools: Set/get timeout and get qos for flowsdimitri staessens2016-12-121-36/+154
| | | | | | | | | | | | | | | | Receiver timeouts can now be set on a flow using the flow_set_timeout function. Specifying NULL disables the timeout. The flow_get_timeout function gets the value for the timeout. This commit also deprecates fcntl in favor of flow_get_flags and flow_set_flags functions. struct qos_spec is typedef'd as a qosspec_t. The tools and cdap.c are updated to use the new API. Fixes a bug in operf client where the client's writer thread wouldn't cancel on SIGINT.
* lib: Remove dst_api field from rdrbuff blocksdimitri staessens2016-11-171-4/+1
| | | | | | Now that we have an rbuff per flow per AP, there is no more need to keep the dst_api in the rdrbuff. This also simplifies the sanitizer in the irmd.
* lib, ipcpd: Improve flow allocationdimitri staessens2016-10-311-91/+94
| | | | | | | All calls for opening rbuffs are now concentrated on the dev side. This allows some simplifications in the np1 calls. The ipcp_fini call will not destroy the mutex associated with the state, since the final state needs to be checked before shutting down an IPCP.
* lib: Have flow_event_wait return non-zero valuedimitri staessens2016-10-301-3/+17
| | | | | | Flow_event_wait will either return -EINVAL, -ETIMEDOUT or a positive integer indicating the number of SDUs in the fqueue. This allows to call the function as the condition for a non-terminating while loop.
* lib: Free fd when deallocating a flowdimitri staessens2016-10-301-0/+1
| | | | Fixes a little bug that sneaked in with the revised deallocation.
* lib: Clean up flow if alloc_res failsdimitri staessens2016-10-271-44/+65
| | | | | | | | | If alloc_res fails all resources will be cleaned, except for the assigned flow_descriptor, which must be released with a dealloc call. Calling dealloc after a failed flow_alloc will not try to destroy the already cleaned up flow in the IRMd and IPCPs. Also fixes some memleaks in the oping client.
* lib, ipcpd: Further stabilization of flowsdimitri staessens2016-10-261-22/+33
| | | | | | | | | | | The steps for flow deallocation have been further refined. An operation ipcp_flow_fini() which wait for all SDUs to be read from a flow has been added. The shim IPCPs and the local IPCP have been adapted to this new API. Deallocation messages have been removed from the shim IPCPs, since there is insufficient state synchronisation between them to make this work reliably.
* Merged in sandervrijders/ouroboros/be-ipcp-threads (pull request #283)dimitri staessens2016-10-261-2/+1
|\ | | | | | | ipcpd: Add threadpool for main loop
| * ipcpd: Add threadpool for main loopSander Vrijders2016-10-261-2/+1
| | | | | | | | | | | | | | This adds a threadpool for the main loop of the IPCPs. Before there was a single thread handling each request, which could result in starvation since performing name queries at the same time as enrolling a normal IPCP was impossible.
* | lib: API for accepting flows with QoSdimitri staessens2016-10-251-1/+4
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* lib: Stabilise flow allocationdimitri staessens2016-10-231-5/+22
| | | | | | | Deallocation was reverted to a synchronoous operation between the AP, IRMd and IPCP in order to avoid inconsistent states of the port_id. Fixes some memory leaks, particularly the shm_flow_set is now closed upon deallocation.
* dev, ipcp: Fix setting default flow optionsdimitri staessens2016-10-231-0/+1
| | | | | The default flow options were not set when a flow allocation request arrives remotely. This went unnoticed due to a previous bug.
* lib: Fix closing applications with active flowsdimitri staessens2016-10-221-1/+2
| | | | The rdrbuff was previously closed before the remaining SDUs were removed.
* lib: Revert bad fqueue modificationdimitri staessens2016-10-221-1/+2
| | | | | An untested (and wrong) modification to the fqueue was mistakenly added to a previous commit. This corrects the bad code.
* lib: Fix wrong comparisondimitri staessens2016-10-221-2/+2
| | | | FLOW_O_RDONLY is 0, so the previous statement would always be false.
* build: Compile with strict conversiondimitri staessens2016-10-221-10/+13
| | | | | This has the code checked with -Wcast-qual and -Wconversion flags. These flags were removed because SWIG generated code fails.
* build: Comply with -Wextra compiler flagdimitri staessens2016-10-211-2/+5
| | | | | This reduces the risk for some bugs, for instance due to signed/unsigned mismatches and unused variables.
* lib: Move rbuff creation/destruction to IRMddimitri staessens2016-10-211-32/+28
| | | | | This stabilises flow allocation now that the rbuffs are created upon flow allocation. Only the IRMd can sync this process sufficiently.
* lib: Demultiplex the fast pathdimitri staessens2016-10-211-171/+329
| | | | | | | | The fast path will now use an incoming ring buffer per flow per process. This necessitated the development of a new method for the asynchronous io call, which is now based on an event queue system for scalability (fqueue). The ipcpd's and tools have been updated to this API.
* lib, dev: Implement read/write options for flowsdimitri staessens2016-10-161-0/+17
| | | | | | | Added the missing implementation of setting read/write options for flows. This allows applications to block the fast path for remotes. IPCPs can use this to block the fast path for the N + 1 flow when receiving remote deallocation requests.
* lib: Stabilize fast flow deallocation over local IPCPdimitri staessens2016-10-151-12/+20
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* lib: Fix initialisation of flow_setdimitri staessens2016-10-151-2/+3
| | | | The safe copy was not correctly initialised.
* lib: Fix flow deallocation logicdimitri staessens2016-10-131-18/+1
| | | | | Both the N and N-1 entity must now call flow_dealloc for the port_id to be released.
* lib: Track SDUs in the fast pathdimitri staessens2016-10-111-5/+24
| | | | | | This will allow to finalize deallocating flows until all SDUs have been processed. Read and write calls will now block when a flow was deallocated. Replaces NULL checks in the fast path with asserts.
* lib: Add non-copy reading from fd for IPCPsdimitri staessens2016-10-071-8/+43
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* lib, dev: Add asynchronous deallocationdimitri staessens2016-10-071-24/+14
| | | | | Flow deallocation from the application will immediately return (void call). The IRMd will not send a reply message.
* lib: Fix shutdown with pending SDUsdimitri staessens2016-10-061-1/+1
| | | | | The SDU's were not correctly removed upon shutdown, peek should be pop.
* lib, ipcpd: Fix bad lockingSander Vrijders2016-10-051-2/+2
| | | | | | Some locks were taken at an inappropriate time, causing the shim-eth-llc to block indefinitely upon shutdown and causing flow allocation to halt since a response could never be given.
* lib, ipcp: Revise fast path and flow interfacesdimitri staessens2016-10-041-219/+626
| | | | | | | | | | | | IPCPs can now use ap_init() to initialize the memory. All flows are accessed using flow descriptors, this greatly simplifies IPCP development. Reverts the fast path to a single ap_rbuff per process. Splits lib/ipcp into irmd/ipcp and lib/ipcp-dev. Adds a lib/shim-dev holding tailored functions for shims. Moves the buffer_t to utils.h. Fixes the shim-eth-llc length field. Removes the flow from shared.h. Fixes #4 Fixes #5
* lib: Add lazy copy of flow_setdimitri staessens2016-09-071-8/+16
| | | | | | The flow_set now has a safe copy which is threadsafe for the select call without needing a lock. This greatly speeds up consecutive select calls.
* lib: dev: Provide a set of fds to flow_selectdimitri staessens2016-09-061-8/+83
| | | | | | | The flow_select call now takes as a parameter a flow_set_t, which specifies a set of flow descriptors that will unblock the select call when an SDU for one of them arrives. The select call has been moved to its own header.
* lib: dev: Add fd lookup tabledimitri staessens2016-09-031-23/+25
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