ouroboros/src/ipcpd, branch master

ipcpd: Skip vertices with empty forwarding lists

2026-02-22T15:05:00+00:00

Fixes ECMP routing table to skip unreachable vertices with empty forwarding lists, avoiding uninitialized nhop access. Replace inner vertex list walk with bounded index loop instead of using a list_for_each to track indices (which confuses the static analyzer as it seems it can't prove the index remains valid). Remove spurious free(*dist) on ECMP success path (caller frees). Extract edge cleanup into free_edges helper in del_vertex to avoid a static analyzer false positive. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

ipcpd: Fix unused values in unicast IPCP

2026-02-22T15:04:16+00:00

Use the key in the store operation in the DHT, to avoid static analyzer seeing it as being set without being used in release builds. The length of the packet buffer is only used when tracking DT stats, so should be set within the IPCP_FLOW_STATS guard. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

ipcpd: Fix lsdb being renamed to lspb

2026-02-18T07:00:14+00:00

A recent bulk rename of sdb -> spb (shm du buff to shm pkt buff) unintentionally renamed the lsdb. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Add struct llist for lists tracking len

2026-02-18T06:58:21+00:00

The DHT uses a struct {struct list_head, size_t len} pattern, which is also useful in the registry and other places. Having a struct llist (defined in list.h) with consistent macros for addition/deletion etc removes a lot of duplication and boilerplate and reduces the risk of inconsistent updates. The list management is now a macro-only implementation. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

build: Update copyright to 2026

2026-02-18T06:54:56+00:00

Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Add SLH-DSA tests and per-algorithm PQC gating

2026-02-18T06:53:35+00:00

This replaces the single HAVE_OPENSSL_PQC/DISABLE_PQC with per-algorithm CMake variables (ML-KEM, ML-DSA, SLH-DSA), gated by the OpenSSL versions: ML-KEM and ML-DSA require >= 3.4, SLH-DSA >= 3.5. SLH-DSA was already working, but now added explicit authentication tests for it with a full certificate chain (root CA, intermediate CA, server) to show full support. Rename PQC test files and cert headers to use algorithm-specific names (ml_kem, ml_dsa, slh_dsa) and move cert headers to include/test/certs/. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

build: Fix invisible IPCP_TARGET variables

2026-02-13T08:22:29+00:00

The IPCP_*_TARGET variables (e.g., set(IPCP_LOCAL_TARGET ipcpd-local)) were defined locally in each IPCP's CMakeLists.txt (e.g., CMakeLists.txt), but the configure_file() that substitutes @IPCP_LOCAL_TARGET@ into config.h.in runs in a sibling scope that is processed before ipcpd. Since CMake variables don't propagate between sibling directory scopes, all @IPCP_*_TARGET@ substituted to empty strings, resulting in IPCP_LOCAL_EXEC "". Moved the IPCP_*_TARGET definitions into the cmake/config/ipcp/*.cmake files so they are known when generating config.h. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

build: Refactor CMake back to in-tree CMakeLists

2026-02-13T08:22:29+00:00

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 Signed-off-by: Sander Vrijders

lib: Add per-user packet pools

2026-02-13T08:22:28+00:00

The IRMd will now check the user UID and GID for privileged access, avoiding unprivileged users being able to disrupt all IPC (e.g. by shm_open the single pool and corrupting its metadata). Non-privileged users are now limited to a PUP (per-user pool) for sending/receiving packets. It is still created by the IRMd, but owned by the user (uid) with 600 permissions. It does not add additional copies for local IPC between their own processes (i.e. over the local IPCP), but packets between processes owned by a different user or destined over the network (other IPCPs) will incur a copy when crossing the PUP / PUP or the PUP / GSPP boundary. Privileged users and users in the ouroboros group still have direct access to the GSPP (globally shared private pool) for packet transfer that will avoid additional copies when processing packets between processes owned by different users and to the network. This aligns the security model with UNIX trust domains defined by UID and GID by leveraging file permission on the pools in shared memory. ┌─────────────────────────────────────────────────────────────┐ │ Source Pool │ Dest Pool │ Operation │ Copies │ ├─────────────────────────────────────────────────────────────┤ │ GSPP │ GSPP │ Zero-copy │ 0 │ │ PUP.uid │ PUP.uid │ Zero-copy │ 0 │ │ PUP.uid1 │ PUP.uid2 │ memcpy() │ 1 │ │ PUP.uid │ GSPP │ memcpy() │ 1 │ │ GSPP │ PUP.uid │ memcpy() │ 1 │ └─────────────────────────────────────────────────────────────┘ This also renames the struct ai ("application instance") in dev.c to struct proc (process). Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders

lib: Replace rdrbuff with a proper slab allocator

2026-01-26T06:50:33+00:00

This is a first step towards the Secure Shared Memory (SSM) infrastructure for Ouroboros, which will allow proper resource separation for non-privileged processes. This replaces the rdrbuff (random-deletion ring buffer) PoC allocator with a sharded slab allocator for the packet buffer pool to avoid the head-of-line blocking behaviour of the rdrb and reduce lock contention in multi-process scenarios. Each size class contains multiple independent shards, allowing parallel allocations without blocking. - Configurable shard count per size class (default: 4, set via SSM_POOL_SHARDS in CMake). The configured number of blocks are spread over the number of shards. As an example: SSM_POOL_512_BLOCKS = 768 blocks total These 768 blocks are shared among 4 shards (not 768 × 4 = 3072 blocks) - Lazy block distribution: all blocks initially reside in shard 0 and naturally migrate to process-local shards upon first allocation and subsequent free operations - Fallback with work stealing: processes attempt allocation from their local shard (pid % SSM_POOL_SHARDS) first, then steal from other shards if local is exhausted, eliminating fragmentation while maintaining low contention - Round-robin condvar signaling: blocking allocations cycle through all shard condition variables to ensure fairness - Blocks freed to allocator's shard: uses allocator_pid to determine target shard, enabling natural load balancing as process allocation patterns stabilize over time Maintains existing robust mutex semantics including EOWNERDEAD handling for dead process recovery. Internal structures exposed in ssm.h for testing purposes. Adds some tests (pool_test, pool_sharding_test.c. etc) verifying lazy distribution, migration, fallback stealing, and multiprocess behavior. Updates the ring buffer (rbuff) to use relaxed/acquire/release ordering on atomic indices. The ring buffer requires the (robust) mutex to ensure cross-structure synchronization between pool buffer writes and ring buffer index publication. Signed-off-by: Dimitri Staessens Signed-off-by: Sander Vrijders