Ouroboros main repository http://133.ip-51-38-114.eu/cgit/ouroboros/atom?h=0.2 2016-06-29T14:04:19+00:00 2016-06-29T14:04:19+00:00 dimitri staessens dimitri.staessens@intec.ugent.be 2016-06-29T13:54:23+00:00 urn:sha1:d85f211d53a0cb35a756d0c44a2b28807eff4e5d Fixes #3 2016-05-09T14:57:47+00:00 dimitri staessens dimitri.staessens@intec.ugent.be 2016-05-09T14:57:47+00:00 urn:sha1:9f401b25899c84e6d0636d848ba8bf8520e64d47 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. 2016-05-07T14:11:09+00:00 dimitri staessens dimitri.staessens@intec.ugent.be 2016-05-07T14:11:09+00:00 urn:sha1:eb9f44379d5316e7f7e9311d7a66d2041eca743a 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. 2016-04-01T13:01:51+00:00 dimitri staessens dimitri.staessens@intec.ugent.be 2016-04-01T13:01:51+00:00 urn:sha1:65591e5211fb3c44450c52d7534918902e0760d5 2016-04-01T13:00:56+00:00 dimitri staessens dimitri.staessens@intec.ugent.be 2016-03-31T22:55:23+00:00 urn:sha1:3d859bb9a75932a6cffdd37466d510b479c9aa71 2016-03-30T16:02:25+00:00 Sander Vrijders sander.vrijders@intec.ugent.be 2016-03-30T15:25:30+00:00 urn:sha1:08941177f030b77fb44238a7e589322d2e0fcaa2 All messages sent to the IRMd now also get a reply back with the result of the operation. 2016-03-25T10:50:35+00:00 dimitri staessens dimitri.staessens@intec.ugent.be 2016-03-25T10:50:35+00:00 urn:sha1:30da4c65b62b5642f3f603b883e695ce2df2e50b logs should be included in source, not in header 2016-03-24T19:51:55+00:00 dimitri staessens dimitri.staessens@intec.ugent.be 2016-03-24T19:51:55+00:00 urn:sha1:0dd4526f5c75f23aba886bee2d9850a70aa67ca8 Updated tests. Added code to drop a corner case (packet where the tail PCI would cross the edge of the ring buffer) because solving this very rare case is not worth the performance hit on the ringbuffer the extra code would incur. This means the ringbuffer might drop a very small percentage of packets. 2016-03-19T22:17:44+00:00 Dimitri Staessens dimitri.staessens@intec.ugent.be 2016-03-19T18:07:55+00:00 urn:sha1:a9bd08bf09c7baa9254a4b63aacb6bbb23f85f07 Elements must be created/destroyed in order, but IPCPs can access PCI while the PDU is in the ring buffer. Test updated, no more waits are needed. 2016-03-19T12:53:52+00:00 Dimitri Staessens dimitri.staessens@intec.ugent.be 2016-03-19T12:40:03+00:00 urn:sha1:7712e3ea9fc6772b47f593acbe3088cae01c16d2 The shared memory map will allow passing SDU's between IPCPs efficiently. It is a single block of managed memory. SDU's are stored in a shm_du_buff datastructure, which is a list of blocks inside the shared memory region. The mechanism for passing SDU's is not yet implemented and could be either within the region or using another local IPC mechanism. The following things are configured at compile time: SHM_FILE_NAME : the name. Default is "ouroboros_du_map". SHM_DU_BUFF_BLOCK_SIZE: size of a block inside the shared memory region. Default is the pagesize of the system. SHM_DU_MAP_SIZE : the approximate size in bytes of the shared memory map. The actual filesize may differ by a small margin. Default is 4MB.