| Commit message (Collapse) | Author | Age | Files | Lines |
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Slow but steady.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The layer_info had a member layer_name which is a bit
redundant.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The ipcpd-eth-* reserve a packet buffer slot for the N+1 data
packets whenever receiving a frame. For management frames, that
slot is not needed and it was not released, thus blocking the
rdrbuff.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The previous patch only fixed listing the contents on the fuse
filesystem. Apparently files with st_blocks = 0 as seen as empty on
Raspbian, and the FUSE read() function isn't invoked for such
files. Setting st_blocks to 1 fixes that, but st_blksize is ignored
for fuse. So, on raspbian the filesize is now a huge number, but at
least reading the fuse filesystem works.
Corrected the filesystem attributes for the IPCP output for systems
that don't rely on st_blocks to assess filesize.
Also set the file mode to 0644 as these are not executables.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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For some reason, 'ls' on raspbian invoked the fuse readdir() in a loop
where the first call had fuse_file_info * info set to NULL and
subsequent calls had info->nonseekable set to 1. Since we don't check
the value the info struct, this caused an infinite loop when trying to
list the contents of the fuse filesystem subdirectories of
/tmp/ouroboros/.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The dst was printed as a string instead of using hash-formatting.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Printed some more info on a few errors using strerror.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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When a request is cancelled/destroyed, all blocking threads should
exit. Noticed some hangs on the DHT, this seems to fix/reduce it.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The event handler was dereferencing the pointer to a connection, but
the pointer type is not known yet.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The event handler was registered before the scheduler was
started. Which could in theory cause addition of fds to an
uninitialized scheduler. The event handler is now registered after the
scheduler is created as part of dt_start. Likewise it now unregisters
as part of dt_stop.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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This revises the logging in the IPCPs to be a more consistent and
reduce duplicate messages in nested functions.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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This moves the protobuf definition in the library to a pb/
directory. Also renames the protobuf files and does a quick review of
the #define guards in the include library to specify _LIB_ for
internal/non-public library headers.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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All flow allocator code was duplicating the mitigation for a race
where the IRMd response for the flow allocation with a new flow fd was
arriving before the response to the flow_req_arr. This is now moved to
the ipcp common source.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The flow allocator fa_alloc_resp would release the packet buffer (sdb)
before writing if the response was a failure. Also sets the IPCP
allocation timeout in nanoseconds as per the comment.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The state of the IPCP was set and checked in the main files, but it's
more convenient to do it in the common source.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The common enrollment code between the unicast and broadcast IPCP
included the same C source from a source file in the unicast and
broadcast directories. Now it's handled by defining COMMON_SOURCES for
the unicast and broadcast IPCP.
For now, only the enrollment component is common. Two things are
needed for the connection manager:
* Routing to be fixed to use a supporting broadcast layer. Then
management flows can be removed from the unicast IPCP (as
they are in fact data transfer flows of the broadcast layer
that supports the routing dissemination traffic).
* DHT to enroll as part of IPCP enrollment. Now it enrolls when
a data transfer flow is established to be more akin to how
Kademlia nodes join a Kademlia DHT, but this should be
revised to adhere more to O7s enrollment concepts.
After that, the connection manager code will also be completely shared
between the unicast and broadcast layer and the connmgr will also be
common code.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The enrollment messages now have a 64-bit ID to easier track
enrollments in the logs in larger scale tests.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The code was a bit convoluted to print hashes as hex strings. Renamed
to HASH_FMT32 and HASH_VAL32 to make clear we are printing the first
32 bits only, and added options to print 64 up to 512 bits as well.
This doesn't depend on endianness anymore. Adds a small test for the
hash (printing) functions.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Found by GCC static analyzer.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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For instance ipcp_udp_* vs eth_ipcp_*. Now all functions are
<type>_ipcp_*.
Als cleans up some minor things.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The refactors removed the need to set the hash algorithm for the
ipcpd-udp and the ipcpd-broadcast. However, the algorithm was not set
at bootstrap, so the ipcpd-udp was trying to use an SHA3-256 instead
of an MD5, causing flow allocation over the UDP to fail. The
ipcpd-broadcast used the default, so there was no problem.
Fixed by setting the correct algorithm for these ipcpds at bootstrap.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The clock was not explicitly initialized in the ipcpd-udp.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Doesn't seem to be needed, this makes it uniform in all protobuf
files.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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This adds initial support for configuration files using the C99 TOML
parser (to be installed separately from https://github.com/cktan/tomlc99).
The default location for the IRMd configuration file is
/etc/ouroboros/irmd.conf. This is configurable at build time.
An example file will be installed in the configuration directory with
the name irmd.conf.example.
Config file support can be disabled using the DISABLE_CONFIGFILE build
option.
There were some refactors and changes to the configuration messages
and protobuf files. This works towards consolidation of protobuf C as
an option for more generic handling of serialization/deserialization
of various messages.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Bug introduced in 269f25d3. The wrong pointer was passed to inet_ntop.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The internal hash enum now matches the public one w.r.t. directory
hash policies. This removes some unnecessary conversion.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The ipcp configuration struct now has internal structures for the
different IPCPs and for IPCP components of the unicast IPCP.
Split the very long IPCP main loop into individual handler functions.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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2022 was a rather slow year...
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Found by Clang version 15.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The structure of main functions of the IPCPs was a bit strange with a
ipcp_shutdown() call that combined waiting for a terminating signal
with stopping the internal threads. This is now revised into a
symmetrical design of
ipcp_start(), which now includes the create response towards the IRMd.
ipcp_sigwait(), which waits for a shutdown signal
ipcp_stop() that then stops the internal threads.
Now the main() functions of the IPCPs will make sense without checking
what that ipcp_shutdown() functions actually does.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The IPCP flow_set was getting destroyed with the IPCP main loop still
running, causing potential deadlocks.
Reported-by: Thijs Paelman
Confirmed-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Tested-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Growing pains.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Reading/writing to (N + 1)-flows from the IPCP was using a raw QoS flow
to bypass some functions in the ipcp_flow_read call. But this call was
broken for keepalive packets. Fixing the ipcp_flow_read call for
(N - 1) flows causes the IPCPs to drop 0-byte keepalive packets coming from
(N + 1) client flows.
>From now on, there is a dedicated call for (N + 1) reads/writes from
the IPCPs that's more efficient and cleaner. The (N + 1) flow internal
QoS is now also defaulted to a qos_np1 qosspec, instead of tampering
with the qosspec requested by the (N + 1) client.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Reading packets from the rbuff and checking their validity (non-zero
size, pass crc check, pass decryption) is now extracted into a
function.
Also adds a function to get the length of an sdu_du_buff instead of
subtracting the tail and head pointers.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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If there is no piggyback data, memcpy was passed a NULL pointer in
memcpy(buf, NULL, 0) calls, which is undefined behaviour.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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A small refactor of the kad_req_create function's cleanup code.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The maximum packet lifetime (MPL) is a property of the flow that needs
to be passed to the reliable transmission protocol (FRCP) for its
correct operation. Previously, the value of MPL was set fixed as one
of the (fixed) Delta-t parameters. This patch makes the MPL a property
of the layer, and it can now be set per layer-type at build time.
This is a step towards a proper MPL estimator in the flow allocator.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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We cancel the thread, so the SO_RCVTIMEO is not needed anymore (it
dated from when we checked the state every so often.
The address sanitizer is complaining about the the cleanup handlers in
the acceptloops after the thread gets cancelled in the read(). I've
tried to resolve it, but no avail. Pretty convinced it's a
false-positive, so ASan will ignore these functions for now.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The qosspec_t now has a timeout value that sets the timeout value of
the flow. Flows with a peer that has timed out will now return
-EFLOWPEER on flow_read() or flow_write().
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Fixes some unchecked and wrongly checked return values.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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When handling management frames, there was a cancellation point after
the unlock, which would cause the cleanup handler to attempt a double
unlock if the thread was cancelled at that point.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Small refactor taking the wait for the flow allocation to complete
out.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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This refactors the single long function that handles incoming packets
destined for the flow allocator.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The pft hash function assumed mem_hash allocates memory, but it does
not. There was also a memcpy with potentially overlapping memory
regions, which is undefined behaviour.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The dht_del function was called under lock in dht_unreg, and then
tried to take the lock again, a 100% deadlock. Also fix uninitialized
value in dht_retrieve.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Less code, and less chance of a collision.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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The count value could be IPCP_UDP_BUF_SIZE, overflowing buf.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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Probably a leftover from previous shutdown logic.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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