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* irmd: Add configuration file supportDimitri Staessens2023-03-081-1/+1
| | | | | | | | | | | | | | | | | | | | | 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>
* ipcpd: refactor IPCP configurationDimitri Staessens2023-02-133-32/+13
| | | | | | | | | | 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>
* build: Update copyright to 2023Dimitri Staessens2023-02-1352-52/+52
| | | | | | | 2022 was a rather slow year... Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Refactor main functionsDimitri Staessens2022-07-131-15/+8
| | | | | | | | | | | | | | | | | | | 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>
* build: Update copyright to 2022Dimitri Staessens2022-04-0352-52/+52
| | | | | | | Growing pains. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Add np1_flow_read and np1_flow_write callsDimitri Staessens2022-03-304-5/+12
| | | | | | | | | | | | | | | | 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>
* lib: Refactor reading packet from rbuffDimitri Staessens2022-03-303-7/+7
| | | | | | | | | | | | 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>
* ipcpd: Fix memcpy with NULL in piggyback APIDimitri Staessens2022-03-081-2/+4
| | | | | | | | 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>
* ipcpd: Refactor kad_req_createDimitri Staessens2022-03-081-20/+25
| | | | | | | 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>
* ipdpd: Pass MPL to application at flow_allocationDimitri Staessens2022-03-082-2/+6
| | | | | | | | | | | | 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>
* lib: Make flow liveness timeout configurableDimitri Staessens2022-03-031-2/+5
| | | | | | | | | 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>
* ipcpd: Fix some unchecked return valuesDimitri Staessens2022-03-031-7/+10
| | | | | | | Fixes some unchecked and wrongly checked return values. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Refactor sendingflow allocation responseDimitri Staessens2022-02-211-21/+33
| | | | | | | | 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>
* ipcpd: Refactor flow allocator message handlingDimitri Staessens2022-02-211-113/+170
| | | | | | | | 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>
* ipcpd: Fix hashing and overlapping memcpy in pffDimitri Staessens2022-02-182-12/+4
| | | | | | | | | 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>
* ipcpd: Fix deadlock in dht_unregDimitri Staessens2022-02-181-8/+3
| | | | | | | | | 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>
* ipcpd: Use random buffer for flat addressDimitri Staessens2022-02-181-15/+4
| | | | | | | Less code, and less chance of a collision. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix bounds check on PROG_MAX_FLOWSDimitri Staessens2022-02-181-2/+2
| | | | | | | Off-by-one error in the bounds check. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix initialization of hash width in DHTDimitri Staessens2022-02-171-5/+7
| | | | | | | | | | The width of the Kademlia hash function (dht->b) was set only after the ID was created. This should have failed miserably, but the bytes after were fine as they were just a randomized ID in the Kademlia network. Nasty. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix free in fail path of readdirDimitri Staessens2022-02-173-3/+3
| | | | | | | | | The free of the buffer in the failure path of the readdir RIB functions was taking the wrong pointer in a couple of places. The FRCT RIB readdir was missing error handling for malloc and strdup. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Use wrlock for rotating multipath pff entryDimitri Staessens2021-12-291-12/+14
| | | | | | | | The multipath pff entry was modified (rotated) under a read lock, which is now changed to a write lock. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Allow creation of multiple directoriesDimitri Staessens2021-12-295-421/+523
| | | | | | | | | To allow merging large network layers, a situation will arise where multiple directories need to coexist within the layer. This reverts commit 9422e6be94ac1007e8115a920379fd545055e531. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Add dt component to regular startup flowDimitri Staessens2021-12-061-16/+9
| | | | | | | | | The dt component had init/start commands somewhat outside of the overall flow of startup of the unicast IPCP. This was probably some old code and wasn't needed. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Consolidate policies within folderDimitri Staessens2021-12-0611-12/+125
| | | | | | | | Each policy folder will now have a pol.h file, so that (in most cases) adding a new policy only requires changes inside the policy folder. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Make the DHT a directory policyDimitri Staessens2021-12-068-29/+81
| | | | | | | | The DHT is now a proper directory policy instead of a unicast IPCP component. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Move DHT to stackDimitri Staessens2021-12-064-498/+410
| | | | | | | | | | This makes the DHT a single directory implementation and moves it to the stack (init/fini instead of create/destroy). This is a step towards making it a directory policy, in line with our other policy implementations. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Restructure policy codeDimitri Staessens2021-12-0633-72/+106
| | | | | | | | The policies were all in a single folder pol/, and have been moved to a folder per component/mechanism to keep things a bit more orderly. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix conversion to uint64_tDimitri Staessens2021-09-051-1/+1
| | | | | | | | The print output for MB-ECN had a size_t conversion to uint64_t that some compilers complain about. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix additive increase in CA-MB-ECNDimitri Staessens2021-07-211-2/+2
| | | | | | | | | | | | | | | | | The logic for additive increase was botched. It was adding to the current window limit, and to avoid a count-to-infinity when sending below the limit, I added a check that the application was trying to send more than the current limit. This fails in congestion avoidance mode when the IPCP is throttling traffic below the limit; causing the app to never increase the congestion window (and even worse, to keep decreasing in some cases). The Additive Increase will now always add bandwidth to the latest sending rate instead of the window bandwidth limit, avoiding all the problems. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix flow allocator build without fuseDimitri Staessens2021-07-181-3/+4
| | | | | | | | The u_snd and u_rcv variables were not guarded by ifdefs when updating. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Export flow updates sent/recvd to fa RIBDimitri Staessens2021-07-121-1/+9
| | | | | | | | The RIB of the flow allocator will now export the number of flow updates sent/received per flow. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix update rate for Multi-Bit ECNDimitri Staessens2021-07-121-1/+1
| | | | | | | | The rate was supposed to be 1 update per 8 data packets, but the calculation was doing 1 update per 4 data packets. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* unicast: Fix RIB stats for congestion avoidanceDimitri Staessens2021-07-101-2/+2
| | | | | | | The upstream/downstream stats were switched. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Pass full path for RIB entriesDimitri Staessens2021-06-293-7/+31
| | | | | | | | | | | | | | | | | | | | | | | | | | | The read functions for the RIB will now receive the full path, instead of only the entry name. For IPCPs, we organized the RIB in an /<ipcp>/<component>/entries structure with a directory per component, so we don't need the full path at this point. For process flow information, it's a lot more convenient to organize it the following way /<pid>/<fd>/stat We can then register/unregister the flow descriptor when the frct instance is created, and for getting the stats, we'd know the flow descriptor from the fuse file path. If we would create a file per flow instead of a directory per flow, something like /<pid>/flows/<fd> we'd need to do additional bookkeeping to list the contents of that directory (we would need to track all flows with an active FRCT instance), that fuse knows because it tracks the directories. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix unregistering fa and dt RIBsDimitri Staessens2021-06-282-10/+13
| | | | | | | These RIBs were not properly unregistered on shutdown. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Remove struct stat from RIB APIDimitri Staessens2021-06-283-60/+42
| | | | | | | | | | The RIB API had a struct stat in the getattr() function, which made all components that exposed variables via the RIB dependent on <sys/stat.h>. The rib now has its own struct rib_attr to set attributes such as size and last modified time. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Fix compilation with fuse (RIB) on FreeBSDDimitri Staessens2021-06-283-0/+7
| | | | | | | | | | | Compilation failed on FreeBSD 14 with fuse enabled because of some missing definitions. __XSI_VISIBLE must be set before including <ouroboros/rib.h> for some definitions in <sys/stat.h>. FreeBSD doesn't know the MSG_CONFIRM flag to sendto() or CLOCK_REALTIME_COARSE, which are Linux-specific. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix missing return statement0.18.2Dimitri Staessens2021-06-231-0/+2
| | | | | | | | | The fa_handle_packet function loop is non-void but didn't have a return statement. Only got picked up if I build from AUR, which is weird. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib, ipcpd, irmd: Wrap pthread unlocks for cleanupDimitri Staessens2021-06-233-23/+19
| | | | | | | | | | | | This add an ouroboros/pthread.h header that wraps the pthread_..._unlock() functions for cleanup using pthread_cleanup_push() as this casting is not safe (and there were definitely bad casts in the code). The close() function is now also wrapped for cleanup in ouroboros/sockets.h. This allows enabling more compiler checks. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix buffer overflow in flow allocator RIB.Dimitri Staessens2021-06-211-3/+3
| | | | | | | | Max value of UINT64 can be 20 characters when printed, need an extra byte for sprintf trailing '\0'. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix congestion window scalingDimitri Staessens2021-06-211-18/+41
| | | | | | | This fixes scaling of the congestion window, which was a buggy mess. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Move RIB initialization to common groundDimitri Staessens2021-06-211-11/+1
| | | | | | | | | | | | | | This moves Resource Information Base (RIB) initialization into the ipcp_init() function, so all IPCPs initialize a RIB. The RIB not shows some common IPCP information, such as the IPCP name, IPCP state and the layer name if the IPCP is part of a layer. The initialization of the hash algorithm and layer name was moved out of the common ipcp source because IPCPs may only know this information after enrollment. Some IPCPs were not even storing this information. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Fix free of uninitialized variable in graph.cDimitri Staessens2021-05-281-3/+1
| | | | | | | | | The new GCC 11.1 compiler discovered s_dist would be uninitialized with an unknown policy, so it doesn't need to be free'd. Also removes some unneeded includes in broadcast dt.c that I had pending. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Move connmgr and enrolment to common groundDimitri Staessens2021-03-2812-1052/+19
| | | | | | | | | | The connection manager and enrolment components of the unicast and broadcast IPCP have a lot in common, as conjectured in the paper. The initial implementation of the broadcast IPCP just duplicated the code. This moves the shared functionality to common ground. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Don't include enroll.h in connmgrDimitri Staessens2021-02-251-1/+0
| | | | | | | It's not needed to include enroll.h. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update email addressesDimitri Staessens2021-01-0350-100/+100
| | | | | | | | The ugent email addresses are shut down, updated to Ouroboros mail addresses. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Update copyright to 2021Dimitri Staessens2021-01-0350-50/+50
| | | | | | | Happy New Year, Ouroboros! Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Pass qoscube to ECN marking functionDimitri Staessens2020-12-208-3/+13
| | | | | | | | The ECN marking function should be able to use the packet QoS to allow prioritizing traffic under congestion. Not yet implemented in MB-ECN. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Remove unused variable in MB-ECN policyDimitri Staessens2020-12-121-4/+0
| | | | | | | | The t_sent variable is a remnant from the first version and isn't needed anymore. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Pass previous ECN value in congestion APIDimitri Staessens2020-12-128-18/+30
| | | | | | | | The previous value of the ECN field should be passed to the congestion notification function. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
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