| Commit message (Collapse) | Author | Age | Files | Lines |
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The registration function has been moved to the irm tool, applications
now need to be registered by an administrator. Currently only supports
one instance per registered name, and an AP can be registered under
only one name.
The irmd can now start a registered server application on demand.
For the full functionality of the tool, execute "irm register".
AP name removed from flow allocation. Flow allocation does not send
the source ap name as it is quite useless. The accept() call now only
returns the AE name.
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This adds a shim over LLC over Ethernet. It uses the raw socket API to
send messages directly over an interface.
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When the ring buffer is empty, a read call will sleep. A write call on
an empty ring buffer will wake up sleeping readers.
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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
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non-blocking write would return when the buffer was full
functions in dev now check validity of input file descripters
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lib: allow running shm_du_map in single block mode
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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
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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.
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Fixes some memleaks in dev.c in the case of error conditions.
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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.
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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.
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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.
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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.
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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.
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Adds a missing modulo calculation that would result in index -1 being
returned instead of zero when the ringbuffer skipped back to the
beginning.
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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.
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fd and flows are now all protected by the flows_lock while the overall
state of the AP is protected by the data_lock.
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The application can call accept(fd, NULL, NULL);
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cleanup of file descriptors for the shared memory.
also adds a missing NULL check and some invalidation in dev.c
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Used simpler pointer arithmetic to calculate the file offset pointers.
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Port_id's weren't correctly released. Also removes remaining debug
logs from the library.
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lib, ipcpd, irmd: Add QoS cube definition
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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.
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Locking is required for multi-threaded applications. Flows are locked
separately. Read/Write locks are used for concurrent reads.
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moved a malloc so there is no malloc/free when there is no data to be
read from the shm_ap_rbuff.
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Locking the main mutex should happen while the counter is locked.
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This adds read/write locks, allowing for concurrent reads on the locked
datastructure. This is needed for the fast path.
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Unnecessary filename string removed. Formatting fix.
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allows setting the oflags to make flow_read and flow_write blocking or
non-blocking (FLOW_O_NONBLOCK).
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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.
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This commit adds locking to the IRMd with a single global lock.
It also fixes some issues in cleaning up the daemon.
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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.
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thanks Sander ;)
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returning -1 as uint32_t leads to bugs.
also changed types in GPB to sint to use zigzag encoding.
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This better reflects the use as the pid is appended to that name.
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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.
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flow allocation now propagates on the client side up to the IPCP.
added UNKNOWN_AP and UNKNOWN_AE definitions to dev.h
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ipcp_create now returns the pid of the created process to allow for
more efficient scripting.
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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.
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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.
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