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This removes configuration from the FRCT protocol to send it during
flow allocation.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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Since the seqno is further ahead than the lwe (this was checked
before), we can safely use seqno - lwe in unsigned arithmetic as the
distance in the sequence number space.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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This adds a data qos cube that is reliable. Reliable qos can be
selected by setting the loss parameter of the qosspec to 0.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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The __frct_rcv should return -EAGAIN if there is no packet for the
application, but 0 was always returned. Also fixes sequence number
rollover.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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This revises the delta-t implementation to align with Watson's timer
specifications. FRCT will never deliver out-of-order packets. A raw
flow (without delta-t state machine) will be able to provide such a
service.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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The reordering queue is replaced by a fixed ring buffer for speed and
simplicity.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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Happy New Year, Ouroboros.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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Endianness conversion from/to the network for the sequence number was
missing in 68694bc.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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This replaces the variable FRCT header with a packed struct, which
significantly simplifies the implementation. The shm_du_buff calls to
release the head/tail are updated to return a pointer to the original
head or the new tail (in symmetry to the alloc calls, which return a
pointer to the new head and old tail), so that it immediately points
to the structure that is needed.
The frct_pci sources are removed and frct is now fully in the frct.c
source file.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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The frct_pci and rq headers are moved from include/ouroboros to
src/lib since they are only needed in the library. FRCT is moved to
its own source file.
FRCT takes the application PDUs, encapsulates and processes them and
hands them back. This makes it easier to disable FRCT should the
application want to write to a "raw" flow. An FRCT instance is now
allocated upon alloc and released upon dealloc.
The FRCT data structure is split into a sender and receiver connection
record. Setting a new configuration will now be done upon sending the
next data PDU, which will flag the DRF for a new run and use that
configuration. This avoids some issues should packets arrive
out-of-order, and simplifies setting a configuration.
Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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