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lib, ipcpd, irmd: Add QoS cube definition
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This fixes wrong header inclusion that would make programs which are
not developed within ouroboros fail upon compilation, since they would
not find certain headers on their system.
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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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lib: dev.c: added locking
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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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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.
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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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flow_alloc_res had missing cleanup, added missing unlock.
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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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improved cleanup when killing the IRMd.
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The shim_udp now correctly destroys its ringbuffer on exit. Now
handles sdu's in a single thread using select() with a 10 us timeout.
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A value that was unitialized was being treated as an error in the
release build with gcc.
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This adds nslookup support to the shim UDP, so that a custom DNS
server can be queried.
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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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it's more robust to use dedicated locks for pthread_cond_signal so no
other threads can be waiting for the mutex.
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bmp_allocate should be called under lock. Helgrind does not give
warnings anymore during flow allocation.
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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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Fixes some log messages
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This fixes bad indentation and log messages without a newline in the
echo application.
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A wrong log message was being printed if the bootstrap command was
called with a wrong parameter.
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The initial implementation looped on a nanosleep to wait for an
incoming flow allocation request. This implementation is now corrected
with the necessary locks and the thread sleeps on a condition variable.
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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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caused the shim to run out of file descriptors fast...
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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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This adds support for adding the application name to a BIND DNS server
through the nsupdate utility.
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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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This abstracts away the IRMd messages by calling the functions from
ipcp.h in the ouroboros library. It also fixes some formatting issues.
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This fixes the shim-udp-test, which was using a non null-terminated
string, which caused it to fail on some systems.
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This commits adds the gethostbyname call to resolve the dst_name for a
flow allocation using DNS. The DNS server should be specified using
the method mandated by the system (e.g. added to /etc/resolv.conf).
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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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Initial code for application registration. Specifying "*" will (for
now) register with the first IPCP available in the system. Modified
the echo server not to barf messages on failed accept()
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The shim UDP will listen to incoming SDU's for a flow. If the flow is
FLOW_PENDING, it will set it to FLOW_ALLOCATED on the reception of the
first SDU, and connect() to set the destination server_host:sp.
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fixes comments on 38c4169 (memleaks)
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