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ipcpd: Fix pthread_cond_timedwait deadlines
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build: Add check for robust mutexes
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This adds a check for robust mutexes. The constant HAVE_ROBUST_MUTEX
is set accordingly in config.h. It also adds some other fixes to make
the prototype compile on the Hurd.
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This fixes pthread_condtimedwaits in the flow allocator of all IPCPs
that had bad deadlines set (the interval instead of the actual
absolute time).
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lib: Simplify opening flows
Approved-by: dimitri staessens <dimitri.staessens@ugent.be>
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This refactors dev.c to have a common function called init_flow that
is called whenever a flow is allocated in dev.c
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Be fixes
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The scheduler in the normal IPCP is now multithreaded. While useful in
itself for scalability, it currently solves thread starvation in case
of executing post_sdu operations that may require a response. This
could be further revised in the future to split the SDU handling
threads from the component tasks.
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Fixes a memory leak when the DHT is destroyed during a send_msg. Fixes
a deadlock when destroying the DHT with a pending lookup. Removes some
debug logs that clutter output due to expected redundant FIND_VALUE
responses.
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lib: Add threadpool manager
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This adds a threadpool manager component in the library that is used
in the IRMd and IPCPs. The threadpool manager now doesn't detach
threads but does a join when they exit. This solves a data race in the
previous implementation where some threads were not completely finished
upon release of some resources.
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ipcpd: Retry sending DHT response messages
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This will make the remote retry sending responses when the DT
component can't send the message. This is most useful at enrollment,
when the remote's routing table may need to wait a bit on the routing
component for a path to the new member,
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lib: Fix destruction of CDAP instances
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The received message list was not correctly freed upon destruction of
the CDAP object. There was also still a rare case in which thread
cancellation would keep a lock, blocking the IPCP shutdown, which is
also fixed.
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lib: Fix processing state in CDAP
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The processing state was not correctly reset at all points in the
loop, causing CDAP to block the IPCP on shutdown in some cases. This
also adds a missing unlock and reorders some other unlocks.
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ipcpd: Fix DHT lookup processing
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Not all returned contacts were processed when a FIND_NODE or
FIND_VALUE message was returned.
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irmd: Fix order of IPCPs
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This fixes the order of the IPCPs in the IRMd, so that the right type
is queried first on flow allocation.
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ipcpd: Add DHT as directory in normal IPCP
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This implements a Distributed Hash Table (DHT) based on the Kademlia
protocol, with default parameters set as used in the BitTorrent
Mainline DHT. This initial implementation is almost feature complete,
except for some things to be done after a testing period: caching and
stale peer bumping, and setting the expiration timeout via the IRM
tool.
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Be fixes
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The enrollment calls dealloc immediately after cdap_del_flow(), but
the CDAP instance may still have that fd in its fqueue loop.
cdap_del_flow will now wait for an fqueue loop to end before
returning, to make sure the flow is not needed anymore.
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ipcpd, lib, irmd: Hardcode shim hash algorithms
Approved-by: dimitri staessens <dimitri.staessens@ugent.be>
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This will hardcode the shim hash algorithms as they don't have an
enrollment phase.
Fixes #44
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irmd: Shutdown sanitizer without cancellation
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Be fixes
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include: Use offsetof in list.h
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include: Fix formatting in list.h
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Be rng
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This adds a secure random number generator. It will use OS specific
calls with a fallback to OpenSSL if available.
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lib: Fix bug and add test for time_utils
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lib: Handle errors when creating cdap_req structs
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