| Commit message (Collapse) | Author | Age | Files | Lines |
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irmd: Add option to print version
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This adds the --version option to the IRMd. With this option it will
print the version of Ouroboros to stdout and exit. Checking the
version does not require root privileges.
Also fixes calling log functions before log_init() and after
log_fini().
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irmd: Don't destroy flows before IPCPs
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This allows the IPCPs to call ouroboros_fini() and clean up their
buffers and drastically reduce chances of getting an assertion error
that some rbuffs are not empty when shutting down the irmd.
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lib: Cancel tpm threads instead of marking exit
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This makes the threadpool use pthread_cancel instead of setting an
exit flag that threadpool managed threads check periodically. This
drastically reduces CPU consumption in the irmd when running a lot of
applications. It requires cancellation handlers in the ipcp and irmd
to be implemented to ensure safe cancellation during operation and
shutdown.
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ipcpd: normal: Add Loop-Free Alternates routing
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This will let the link state policy react to flow up and down events
by notifying the PFFs of the routing instances of this event so they
can take an appropriate action.
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This adds the Loop-Free Alternates (LFA) policy. In case a link goes
down a LFA may be selected to route the SDUs on without causing loops
instead of the main hop that just went down.
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Be routing
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This adds a refcount to the graph edges so that it is only included in
the calculation if both sides announced it.
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This keeps the index in the vertex struct so that is more easily
available during Dijkstra.
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This simplifies the Dijkstra implementation by immediately setting the
correct next hop during Dijkstra instead of looping through the list
of predecessors afterwards.
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This simplifies several internal graph functions by passing an array
of bools instead of an array of vertices.
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This returns a list as routing table instead of a pointer to a pointer
to a pointer, which simplifies the looping through the routing table
and makes it more extensible for future additions.
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ipcpd: normal: Set clock to realtime clock
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A pthread_cond_wait was using the pthread_cond_clock and thereby
timing out constantly, consuming 100% CPU. This changes it to use the
realtime clock.
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ipcpd: Add multiplier to scale scheduler threads
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ipcpd: Fix deadlock in DHT
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The lookup_update was waiting for the LU_INIT state to resolve under
dht->lock which prevented that update.
This PR fixes this bug, but leaves a (very rare) bug when the
lookup_destroy is called while the lookup_update is waiting for the
LU_INIT state to resolve. The solution also is a (harmless) lock
inversion, but this is also not the best.
Fixes #51
Fixes #52
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ipcpd: Fix compilation of DHT
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This adds a threadpool manager to the DHT. This was needed because the
detached thread could cause a data race on shutdown.
The threadpool manager is revised to allow multiple instances in a
single program.
The irmd and ipcp now store commands in a buffer (list) instead of a
single buffer before passing it to handler threads.
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Some bugfixes
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There was a return -1 in the allocate call which is unsafe since -1
may be a valid id in the bitmap. Since it's a data structure for
internal use, I replaced the NULL checks with assertions.
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Some bugfixes
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This fixes a data race in the shim-udp where the alloc_lock was
released before the ipcpi.alloc_id was set.
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lib: Disable lockless rbuff by default
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This disables the lockless rbuff by default since it is less stable
and tested.
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ipcpd: Fix DHT recursive lookup
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lib: Include string.h in hashtable.c for memcpy
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ipcpd: Cancel threads in IPCPs
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This reduces CPU consumption and shutdown times.
Invalidates #43
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ipcpd: normal: Add alternate hop PFF
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This adds a PFF that returns an alternate hop as next hop in case the
hop that would have been returned is down.
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ipcpd: Use the kernel scheduler for QoS
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This revises the sdu_scheduler of the normal IPCP to create a
scheduler thread per QoS cube and let the kernel scheduler schedule
them based on a priority. Priorities can be set at build time in a
range of 0-100, which will be mapped onto a suitable priority for the
kernel scheduler. The current scheduler policy is fixed to SCHED_RR
since it is the most suitable scheduler defined by POSIX.
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lib: Pass the fuse struct to the handling thread
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This avoids potential data races on rib.fuse.
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ipcpd: Handle DHT SDUs in different thread
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The DHT will now spawn a thread when receiving SDUs to avoid
starvation of sdu scheduler threads.
Also fixes some locking issues.
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ipcpd: normal: Make PFF policy-based
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This turns the PDU Forwarding Function of the IPCP into a policy. For
now only the simple PFF policy is available.
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ipcpd: Fix shutdown of rib
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Fixes #50
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