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* ipcpd: shim-udp: complete lockingdimitri staessens2016-05-141-1/+5
| | | | | | | Added necessary locks for the shim-udp. This PR also improves thread management, the main thread now starts a mainloop thread, which spawns sdu handler threads when it the IPCP is enrolled. If the IPCP exits the enrolled state, the sdu loop is cancelled.
* irmd: flow allocation and fast pathdimitri staessens2016-05-071-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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 staessens2016-04-271-3/+0
| | | | | flow allocation now propagates on the client side up to the IPCP. added UNKNOWN_AP and UNKNOWN_AE definitions to dev.h
* ipdpd: defined ANONYMOUS_AP namedimitri staessens2016-04-201-0/+3
| | | | fixes comments on 38c4169 (memleaks)
* ipcpd: added checksdimitri staessens2016-04-191-0/+1
| | | | | added missing NULL checks common argument check function for ipcps
* ipcpd: initial IPC processesdimitri staessens2016-04-181-0/+48
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.