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* lib: shm_ap_rbuff: sleep when read on empty rbuffdimitri staessens2016-05-281-9/+23
| | | | | When the ring buffer is empty, a read call will sleep. A write call on an empty ring buffer will wake up sleeping readers.
* lib: fixed empty line in irm.cdimitri staessens2016-05-281-1/+0
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* ipcpd: IPCP over local memorydimitri staessens2016-05-282-2/+5
| | | | | | | | | | | | | This introduces an IPC process that relays data between two local AP's over the shm_du_map. Only configuration it has is a DIF name. It required small modification elsewhere: lib: added support for the IPCP_LOCAL type irm: added support for the IPCP_LOCAL type dif_config: added the IPCP_LOCAL type tools: added support for the IPCP_LOCAL type
* lib: fixed SHM_DU_BUFF_BLOCK_SIZE in shm_du_mapdimitri staessens2016-05-261-1/+1
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* lib: fixed blocking/non-blocking writedimitri staessens2016-05-261-16/+43
| | | | | non-blocking write would return when the buffer was full functions in dev now check validity of input file descripters
* Merged in dstaesse/ouroboros/be-shm-single-block (pull request #111)Sander Vrijders2016-05-251-6/+31
|\ | | | | | | lib: allow running shm_du_map in single block mode
| * lib: allow running shm_du_map in single block modedimitri staessens2016-05-251-6/+31
| | | | | | | | | | this allows disabling support for SDU's that are larger than a block in the DU MAP by defining the variable SHM_MAP_SINGLE_BLOCK
* | tools, lib: cbr tool for bandwidth testingdimitri staessens2016-05-242-0/+142
| | | | | | | | | | | | | | | | The tool sends constant bandwidth traffic between a client and a server. cbr --help for more info. Adds time_utils.h to the library containing useful functions for arithmetic with timespec and timeval structures.
* | lib: Fix memleaks in dev.cSander Vrijders2016-05-241-23/+30
|/ | | | Fixes some memleaks in dev.c in the case of error conditions.
* lib, ipcpd, irmd: fixes deallocation and fast pathdimitri staessens2016-05-222-31/+42
| | | | | | The fast path has been rewritten to have certainty to read the correct flow. Deallocation will not release port_id's or fd's until they are explicitly released locally.
* lib: removed fd cleaning functiondimitri staessens2016-05-221-27/+10
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* lib, irmd, ipcpd: Flow deallocation over shim UDPdimitri staessens2016-05-212-0/+29
| | | | | | The shim UDP now supports deallocating a flow end-to-end. Contains some stability fixes for flow allocation and some missing close() calls in lib/sockets.
* lib, ipcpd: fixes segfaults in dev.c and shim-udpdimitri staessens2016-05-201-2/+1
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* lib: allow parallel connectionsdimitri staessens2016-05-202-11/+30
| | | | | | dev.c: read now only reads an SDU if is is for the correct port_id shm_ap_rbuff: added a function peek() that returns the port_id of the tail.
* lib: Add missing check upon garbage collectionSander Vrijders2016-05-171-2/+3
| | | | | | | There was a check missing upon garbage collection. If the whole DU map has been used once, all DUs will have their garbage bit set to one. This meant that the garbage collector would keep moving the tail indefinitely.
* lib: Fixed incorrect initializationSander Vrijders2016-05-171-3/+4
| | | | | When moving the tail pointer in the DU map, blocks was never reset to zero. This caused it to sometimes clean up too many DUs.
* lib: Add missing modulo calculationSander Vrijders2016-05-162-11/+11
| | | | | | Adds a missing modulo calculation that would result in index -1 being returned instead of zero when the ringbuffer skipped back to the beginning.
* lib: dev: small locking improvementsdimitri staessens2016-05-161-28/+33
| | | | | | This avoids holding the long locks during accept() and alloc_res() calls. Small reduction of time of other locks held. No changes in locking logic.
* lib: dev.c: Revised lockingdimitri staessens2016-05-151-69/+65
| | | | | fd and flows are now all protected by the flows_lock while the overall state of the AP is protected by the data_lock.
* lib: allow accepting any flowsdimitri staessens2016-05-151-7/+7
| | | | The application can call accept(fd, NULL, NULL);
* lib: cleanup file descriptors for shared memorydimitri staessens2016-05-153-2/+21
| | | | | cleanup of file descriptors for the shared memory. also adds a missing NULL check and some invalidation in dev.c
* lib: shm_ap_rbuff: simplified file offsetsdimitri staessens2016-05-151-13/+9
| | | | Used simpler pointer arithmetic to calculate the file offset pointers.
* lib: irmd: fixed flow deallocationdimitri staessens2016-05-151-7/+10
| | | | | Port_id's weren't correctly released. Also removes remaining debug logs from the library.
* Merged in sandervrijders/ouroboros/be (pull request #84)dimitri staessens2016-05-143-23/+23
|\ | | | | | | lib, ipcpd, irmd: Add QoS cube definition
| * Merge remote-tracking branch 'upstream/be' into beSander Vrijders2016-05-142-0/+128
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| * | lib, ipcpd, irmd: Add QoS cube definitionSander Vrijders2016-05-143-23/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds the QoS cube definition, which is an enum to select which QoS is needed in the IPCP. An application has to use the qos_spec in qos.h to define what it needs. The IRMd will map this unto a qos cube definition. Some headers are now also no longer installed on the system, since they are only to be used within the irmd and ipcps.
* | | lib: dev.c: added lockingdimitri staessens2016-05-142-37/+179
| |/ |/| | | | | | | Locking is required for multi-threaded applications. Flows are locked separately. Read/Write locks are used for concurrent reads.
* | Merge branch 'be' of bitbucket.org:ouroboros-rina/ouroboros into be-rw_lockdimitri staessens2016-05-141-5/+4
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| * lib: shm_ap_rbuff: removed bad memory allocationdimitri staessens2016-05-141-5/+4
| | | | | | | | | | moved a malloc so there is no malloc/free when there is no data to be read from the shm_ap_rbuff.
* | lib: fixed a bug in the rw_lockdimitri staessens2016-05-141-3/+5
| | | | | | | | Locking the main mutex should happen while the counter is locked.
* | lib: implementation of read/write locksdimitri staessens2016-05-132-0/+126
|/ | | | | This adds read/write locks, allowing for concurrent reads on the locked datastructure. This is needed for the fast path.
* lib: shm_ap_rbuff: small fixesdimitri staessens2016-05-121-5/+0
| | | | Unnecessary filename string removed. Formatting fix.
* dev: fixed wrong bracket placementdimitri staessens2016-05-121-2/+1
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* lib: dev: implementation of flow_cntldimitri staessens2016-05-122-9/+35
| | | | | allows setting the oflags to make flow_read and flow_write blocking or non-blocking (FLOW_O_NONBLOCK).
* ipcpd: Allow disabling of DNSSander Vrijders2016-05-101-12/+2
| | | | | | This allows someone to disable the use of DNS in the shim UDP. It also adds a config file specific for the shim UDP (which holds the nsupdate location). Certain defines were also moved to the global config file.
* irmd: introduced lockingdimitri staessens2016-05-102-2/+5
| | | | | This commit adds locking to the IRMd with a single global lock. It also fixes some issues in cleaning up the daemon.
* lib/test: removed the test for the shm_du_mapdimitri staessens2016-05-093-197/+1
| | | | | | | The test had a synchronisation issue. Due to rebuild of the shm_du_map for random access, there was also a hack in the shm_du_map specifically to run this test. Because of this hack, the decision was made to drop this test.
* lib: fixed enormous memory leak in shm_ap_rbuffdimitri staessens2016-05-081-3/+6
| | | | thanks Sander ;)
* lib: changed port_id to intdimitri staessens2016-05-084-21/+20
| | | | | returning -1 as uint32_t leads to bugs. also changed types in GPB to sint to use zigzag encoding.
* lib: changed SHM_AP_RBUFF to SHM_AP_RBUFF_PREFIXdimitri staessens2016-05-081-4/+4
| | | | This better reflects the use as the pid is appended to that name.
* lib/irmd/ipcpd/tools: fixes comments on eb9f443dimitri staessens2016-05-082-6/+23
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* irmd: flow allocation and fast pathdimitri staessens2016-05-079-216/+690
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This commit has a first implementation of flow allocation (the "slow path") and read/write (the "fast path") for ouroboros. It provides basic but unstable communications over the shared memory. It required a lot of changes all over the stack, and fixes a number of previously undetected issues. This PR still need heavy revision regarding data model, locking and cleanup. lib/dev: modifications to the API. It now uses an ap_init() call to set the AP name and sets the Instance ID to the pid of the process. It also binds the AP to the shared memory and creates tables for mappings in the fast path. A call to ap_fini() releases the resources. lib/shm_ap_rbuff: added ring buffer for data exchange between processes in the fast path. It passes an index in the shm_du_map. lib/shm_du_map: rewrote API to work with calls from dev.c. Garbage collector added. Tests updated to new API. ipcpd/ipcp-data: removed everything related to flows, as these are universal for all ap's and kept in ap_data (dev.c), or similar structs for shim ipcps. shim-udp: added flow allocator and read/write functions and shm elements. irmd: revised data model and structures necessary for flow allocation. tools: echo updated to new dev.h API. messaging system was updated to comply with new flow allocation messages. All exchanges use pid and port_id to bootstrap the fast path.
* lib: client-side flow allocationdimitri staessens2016-04-271-2/+4
| | | | | flow allocation now propagates on the client side up to the IPCP. added UNKNOWN_AP and UNKNOWN_AE definitions to dev.h
* lib: irm.h create_ipcp now returns pid_tdimitri staessens2016-04-261-2/+2
| | | | | ipcp_create now returns the pid of the created process to allow for more efficient scripting.
* lib: instance ID's are now set to the process PIDdimitri staessens2016-04-262-23/+8
| | | | | | | | All instance-id's in ouroboros will be set by the system to the pid of the process associated with this application process instance. This means that the user has no way to choose the instance id's. Function calls that assumed manually defined instance id's have been replaced throughout the system.
* irmd: reg/unreg whatevercast namesdimitri staessens2016-04-224-108/+138
| | | | | | | | | | | | Unregistering ap's now works. An AP now registers/unregisters its AP-I by sending its AP name and its pid to the IRMd. The IPCPs register whatevercast names. An AP name is currently mapped on a whatevercast name represented by the same string literal. The IRMd allows registration of only one AP-I per AP. A Name Space Management system is needed in the processing system so we can resolve this completely. Changing the stack to register whatevercast names required some changes all over the ipcpd implemented and in the library.
* shim-udp: flow allocation addeddimitri staessens2016-04-192-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This implements the API for flow allocation. The shims currently does the following. The shim IPCP binds to an interface (IP address) and listens for flow allocation requests on UDP port 0x0D1F (3359), referenced as the listen port (lp). It will treat any datagram received on lp as a flow allocation request. Upon receiving an allocation request IRM_MSG_CODE__IPCP_FLOW_ALLOC from the IRMd, the shim IPCP will bind a UDP socket to a port (cp) allocated by the host OS. From that port it will send a UDP packet containing the destination ap_name to server_host:lp and wait for a response. Upon reception of a packet on server_host:lp, the shim_IPCP creates a UDP socket for the flow with a port set by the host os (sp), binds to it and echoes the received datagram back from server_host:sp to client_host:cp. It will also notify the IRMd of an incoming flow allocation request IRM_MSG_CODE__IPCP_FLOW_REQ_ARR, with as src_ap_name ("John Day"). It will get the port_id as a return value of that message and create a flow with status FLOW_PENDING with that port_id. If the server responds negatively to the flow allocation request (i.e. the shim IPCP on the server side receives a IRM_MSG_CODE__IPCP_FLOW_ALLOC_RESPONSE with a response != 0, it will delete the pending flow. If response == 0, it will set the status to FLOW_ALLOCATED. On the client machine the IPCP will learn sp upon reception of the echoed datagram. It will then create a flow with the port_id it received with the message from the IRMd and set it to ALLOCATED. Pending implementation: DNS support, this PR only supports local flows on the loopback adapter 127.0.0.1. A thread to listen for the echoed message, to avoid the entire IPCP to block when the echoed message is lost. This PR compiles but is untested pending necessary implementations elsewhere in the stack.
* lib: moved flow header and source to ipcpddimitri staessens2016-04-192-88/+0
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* ipcpd: initial IPC processesdimitri staessens2016-04-188-104/+135
| | | | | | | | | | | Basic functions for implementation of IPC processes, and implementation of core functions of the shim IPCP over UDP. Updates to the build system to compile these IPC processes, as well as some fixes in the irmd (rudimentary capturing exit signals) and some fixes in the library, mainly relating to the messaging. Basic implementation of creation / bootstrapping / deletion of the shim UDP. Placeholders for other functions.
* lib: fixed missing check in instance_name_createdimitri staessens2016-04-131-0/+2
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