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* lib: Allow disabling partial readDimitri Staessens2018-03-191-6/+14
| | | | | | | | | | | | | | This allows disabling partial reads. It adds a flag FLOWFRNOPART that disables partial reads. Partial read is different from partial delivery (FRCTFPARTIAL), which allows delivery of fragments of an incomplete packet and thus potentially corrupted data. FLOWFRNOPART will never deliver corrupted data (unless FRCTFPARTIAL is also set). If FLOWFRNOPART is set and the buffer provided to flow_read is too small for the SDU, that SDU will be discarded and -EMSGSIZE is returned; Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Allow partial readDimitri Staessens2018-03-121-20/+39
| | | | | | | | | | | | | This implements partial read of packets if the buffer supplied to flow_read() is smaller than the packet in the buffer. If the number of bytes returned by flow_read equals the size of the buffer, the next read() will deliver the next bytes of the packet (or 0 if the packet was exactly the size of the buffer on the previous read). Implements #7. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Implement timeout on blocking writeDimitri Staessens2018-03-121-9/+19
| | | | | | | | | | This completes the implementation of the SNDTIMEO for a blocking write. Fixes #6. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Use PTHREAD_COND_CLOCK for blocking reads0.10.6Dimitri Staessens2018-03-101-1/+1
| | | | | | | | | | | The rbuff uses the PTHREAD_COND_CLOCK for its condition variables, but the flow_read was passing a time it got from the CLOCK_REALTIME_COARSE clock. This causes the blocking reads not to timeout correctly. The oping was updated to detect server timeouts and finish gracefully. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Add fccntl operation to get queue lengthsDimitri Staessens2018-02-281-0/+9
| | | | | | | | | | This adds the FLOWGRXQLEN and FLOWGTXQLEN operations to fccntl to get the number of packets that are in the receive and transmit buffers respectively. The flow statistics are updated to show these queue lengths. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Fix bad lock in dev.c0.9.2Dimitri Staessens2018-01-221-1/+1
| | | | | | | | There was a rdlock() instead of an unlock(). This fixes #3. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* include, src: Update copyright to 2018Dimitri Staessens2018-01-091-1/+1
| | | | | | | Happy New Year, Ouroboros. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib, tools: Rename application process and instanceDimitri Staessens2017-12-021-59/+59
| | | | | | | | | | | 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 <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* ipcpd, irmd: Bugfix for failed accept() callsDimitri Staessens2017-11-291-1/+2
| | | | | | | | | The ipcp will not have the rx_rb set for a pending flow, so it should not call shm_rbuff_fini. The irmd should not call ipcp_flow_dealloc for flows that are still pending flow allocation. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Fix init and fini ELF sections for OS XDimitri Staessens2017-11-201-2/+10
| | | | | | | OS X uses a different syntax for specifying ELF sections. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Add library initializers to .init_arrayDimitri Staessens2017-11-201-4/+7
| | | | | | | | | | The library initializers with argc and argv arguments were specified using the __attribute__((constructor)). This is undefined behaviour as constructors should have no arguments. This is fixed by passing the functions to the .init_array. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Fix FRCT sequence number network endiannessDimitri Staessens2017-11-091-0/+2
| | | | | | | | Endianness conversion from/to the network for the sequence number was missing in 68694bc. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Use packed struct for FRCT header accessDimitri Staessens2017-11-081-1/+2
| | | | | | | | | | | | | | | This replaces the variable FRCT header with a packed struct, which significantly simplifies the implementation. The shm_du_buff calls to release the head/tail are updated to return a pointer to the original head or the new tail (in symmetry to the alloc calls, which return a pointer to the new head and old tail), so that it immediately points to the structure that is needed. The frct_pci sources are removed and frct is now fully in the frct.c source file. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Refactor FRCT implementationDimitri Staessens2017-11-071-501/+218
| | | | | | | | | | | | | | | | | | | | 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>
* dev: Split nonblocking read and writeDimitri Staessens2017-10-301-2/+2
| | | | | | | | | | The FLOWFNONBLOCK flag now has two subflags FLOWFRNOBLOCK and FLOWFWNOBLOCK which allows setting the behavior of read and write independently. The default behavior is unchanged (blocking read and write). Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* dev: Bind python scripts to script nameDimitri Staessens2017-10-251-0/+13
| | | | | | | | | | This revises the library init script so that it checks whether the program is run by a python executable (python, python2 or python3) and announces the script name instead of the python interpreter. This enables binding python scripts. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Fix exit bug in dev.cdimitri staessens2017-10-231-0/+4
| | | | | | | | | | If the library init() fails, the fini() call tries to access unreleased resources. The fix resets the ai struct to 0 if init() fails and checks a heap pointer for NULL before the fini() accesses internals. Signed-off-by: dimitri staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* Merged in dstaesse/ouroboros/be-deprecate-ouroboros-init-fini (pull request ↵dimitri staessens2017-10-141-13/+16
|\ | | | | | | | | | | #626) Be deprecate ouroboros init fini
| * lib: Deprecate ouroboros_init and ourboros_finidimitri staessens2017-10-141-13/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | lib: Re-enable multi-block supportdimitri staessens2017-10-131-0/+2
|/ | | | | | Multi-block support was forgotten during the update of the build system. This enables it again and fixes some bugs when it is disabled and larger SDUs are sent.
* irmd: Init libgcrypt before using itdimitri staessens2017-09-201-2/+1
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* ipcpd, lib: Add flow down eventsSander Vrijders2017-09-191-27/+59
| | | | | | | | 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.
* lib: Add reordering queue to FRCTSander Vrijders2017-09-151-13/+57
| | | | | This adds a reordering queue to FRCT so that SDUs can be delivered in-order when requested.
* lib: Add per instance FRCT lockSander Vrijders2017-09-011-21/+35
| | | | | This adds a per instance FRCT lock, since it was taking a write lock, thereby severely impacting parallelism in dev.c
* lib: Add fccntl configuration commanddimitri staessens2017-08-311-148/+132
| | | | | | | This replaces the flow_set_* commands with a single fccntl command that can configure flows and the FRCT instance. For more details, see "man 3 fccntl".
* dev: Revise fqueue API and add man pagesdimitri staessens2017-08-291-23/+23
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* Merged in dstaesse/ouroboros/be-deprecate-gam (pull request #572)dimitri staessens2017-08-281-2/+1
|\ | | | | | | Be deprecate gam
| * ipcpd: Deprecate gam as autonomous componentdimitri staessens2017-08-281-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The graph adjacency manager has been deprecated in favor of providing an external interface into the connectivity manager so that adjacencies can be controlled from the command line, user scripts or user applications. The gam and its associated policies were removed from the normal IPCP and the IRM configuration tools. The "/members" part of the RIB was deprecated. Removal of the gam means that initial connectivity based on changes in the RIB can't be provided, so some changes were required throughout the normal IPCP. The enrollment procedure was revised to establish its own connectivity. First, it gets boot information from a peer by establishing a connection to the remote enrollment component and downloading the IPCP configuratoin. This is now done using its own protocol buffers message in anticipation of deprecation of the RIB and CDAP for communication within a DIF. After the boot information is downloaded, it establishes a data transfer flow for enrolling the directory (DHT). After the DHT has enrolled, it signals the peer to that enrollment is done, and the data transfer connection is torn down. Signaling connections is done via the nbs struct, which is now passed to the connmgr, which enables control of the connectivity graph from external sources.
* | lib: Add configuration message to FRCTSander Vrijders2017-08-261-78/+128
|/ | | | | This adds the configuration message to FRCT, which allows for configuring the connection.
* lib: Fix bad locking in frcti_readSander Vrijders2017-08-251-1/+1
| | | | A read lock was taken when a write lock was needed.
* lib, ipcpd, irmd: Fix several memleaksSander Vrijders2017-08-231-0/+1
| | | | | This fixes several memleaks as reported by valgrind. It also fixes some calls to close() with -1.
* lib: Make sender and receiver inactivity simple checksSander Vrijders2017-08-231-153/+68
| | | | | | This makes the sender and receiver inactivity timers into simple checks that compare when the last SDU was sent to the current time to set the receiver or sender inactivity.
* lib: Remove bad assertionSander Vrijders2017-08-231-1/+0
| | | | | Timeout was asserted not to be NULL, but sometimes timeout can be NULL and is a valid parameter when NULL.
* lib: Fix timeout value of flow_event_waitSander Vrijders2017-08-221-4/+6
| | | | | shm_flow_set_wait was called with a timeout even though flow_event_wait was called with timeout NULL.
* lib: Fix calling frct_clear in wrong functionSander Vrijders2017-08-221-2/+2
| | | | frct_clear was called in ouroboros_fini instead of ouroboros_init.
* lib: Fix CRC check and add frct_clearSander Vrijders2017-08-221-13/+30
| | | | | | This adds the CRC check by default on outgoing SDUs. It fixes some errors in the serialization and deserialization of the SDU. frct_clear was added to avoid bad initialization of the array of FRCT instances.
* lib: Make timerwheel a passive componentSander Vrijders2017-08-221-8/+13
| | | | | | 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 staessens2017-08-211-6/+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 Vrijders2017-08-171-70/+370
| | | | | | | | | | 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 staessens2017-08-131-2/+1
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* lib: Fix data race on fqueues bitmapdimitri staessens2017-08-131-126/+143
| | | | | | This locks the process when allocating and destroying flow_sets. The flows_lock has been renamed to lock. Refactors and fixes a memleak in ouroboros_init.
* lib: Simplify initializing flowsSander Vrijders2017-08-011-291/+80
| | | | | This refactors dev.c to have a common function called init_flow that is called whenever a flow is allocated in dev.c
* lib: Fix memleak in FRCT enrollmentdimitri staessens2017-07-031-0/+3
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* lib, ipcpd, irmd: Add full-fledged QoSSander Vrijders2017-06-211-32/+84
| | | | | | | This adds more Quality of Service support to Ouroboros. One part is the network specific characteristics such as bandwidth, delay, ... The other part is end-to-end QoS like reliability, window based flow control, ...
* lib: include missing headers in dev.cdimitri staessens2017-06-211-8/+8
| | | | | The dev.c source file had some missing include headers. This PR fixes inconsistencies between the definitions and declarations in ipcp-dev.h
* lib: Fix some bugs in dev.cdimitri staessens2017-05-231-45/+55
| | | | | | | Fixed releasing an allocated fd on failure. As the sending of dealloc messages has been deprecated, dealloc was simplified by removing a stale block of code (replaced with an assertion). Fixed reading some variables without a necessary lock.
* ipcpd: Remove FRCT from normal IPCPdimitri staessens2017-05-101-1/+1
| | | | | | | In order to ensure 100% reliable transfer, the protocol state machine that takes care of retransmission and SDU ordering has to be in the application. Flow allocation in the normal now uses fds. The PDU_type field was deprecated and AE's within the DIF can use reserved fds.
* lib: Remove obsolete lock in dev.cdimitri staessens2017-04-281-135/+5
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* lib: Add call to reserve blocks in rdrbuffdimitri staessens2017-04-261-1/+27
| | | | | | | This adds a call ipcp_sdb_reserve to reserve memory in the rdrbuff without directly writing to a flow. The ipcp_flow_del function was renamed to ipcp_sdb_release. The functions operating on sdbs are moved to their own header.
* include, lib: Rename ap_init/ap_finidimitri staessens2017-04-131-2/+2
| | | | Fixes #35
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