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Add IPCP_ETH_SNDBUF/RCVBUF cmake build options so deployments can size
the AF_PACKET socket buffers without patching code. Drop the
O_NONBLOCK fcntl on the raw socket in favour of per-recvfrom
MSG_DONTWAIT so race-loser reader threads exit with EAGAIN without
spamming the log.
Track frame send failures and the SO_SNDBUF size in the eth/summary
RIB; log a one-shot warning when the kernel reports AF_PACKET drops.
Retry name queries up to NAME_QUERY_RETRIES times within
NAME_QUERY_TIMEO; a single lost ARP-style mgmt frame no longer fails
the query. Bump IRMd QUERY_TIMEOUT from 200 ms to 2200 ms so the IRMd
budget exceeds the new shim retry window.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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This allows bypassing the IPCP for local processes that share the same
packet pool, lowering latency between processes to comparable levels
as Unix sockets (RTT in the order of a microsecond).
For local processes, no IPCPs are needed:
$ irm b prog oping n oping
$ oping -l
Ouroboros ping server started.
New flow 64.
Received 64 bytes on fd 64.
The direct IPC can be disabled with the DISABLE_DIRECT_IPC build
flag. Note that this is needed for rumba 'local' experiments to
emulate network topologies. Without this flag all processes will just
communicate directly.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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This moves the build definitions back to src/ subdirectories
(CMakeLists.txt per component). Configuration and dependencies are
kept out of tree. Configuration options are bundled into cmake/config/
modules. Dependencies are grouped by component (system/, crypt/, eth/,
coverage/, etc.). It now consistently uses target-based commands
(target_include_directories, target_link_libraries) instead of global
include_directories(). Proper PRIVATE/PUBLIC visibility for executable
link libraries. CONFIG_OUROBOROS_DEBUG now properly set based on being
a valid debug config (not just checking the string name).
It also adds OuroborosTargets export for find_package() support and
CMake package config files (OuroborosConfig.cmake) for easier
integration with CMake projects.
The build logic now follows more idiomatic CMake practices with
configuration separated from target definitions.
Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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