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* lib: Add per-message encryption with OpenSSLDimitri Staessens2019-08-033-12/+75
| | | | | | | | | | | | | | | | | | | This adds a per-message symmetric encryption using the OpenSSL library. At flow allocation, an Elliptic Curve Diffie-Hellman exchange is performed to derive a shared secret, which is then hashed using SHA3-256 to be used as a key for symmetric AES-256 encryption. Each message on an encrypted flow adds a small crypto header that includes a random 128-bit Initialization Vector (IV). If the server does not have OpenSSL enabled, the flow allocation will fail with an -ECRYPT error. Future optimizations are to piggyback the public keys on the flow allocation message, and to enable per-flow encryption that maintains the context of the encryption over multiple packets and doesn't require sending IVs. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Refactor normal to unicastDimitri Staessens2019-07-292-4/+4
| | | | | | | | This completes the renaming of the normal IPCP to the unicast IPCP in the sources, to get everything consistent with the documentation. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Fix CMake 3.0 syntax in wrapperDimitri Staessens2019-04-081-2/+1
| | | | | | | | | The wrapper contained a string that was split using a backslash. This is only supported in CMake > 3.0. Removed the split so compilation resumes with older versions of CMake. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Set independent size for rbuffDimitri Staessens2019-04-061-0/+4
| | | | | | | | | | This allows setting the size of the rbuffs in a system independently of the main packet buffer using SHM_RBUFF_SIZE. The benefit of setting a smaller rbuff size is that a single process can't fully occupy the main packet buffer. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Set specific compiler flags for SWIG target0.15.2Dimitri Staessens2019-03-211-9/+14
| | | | | | | | | | The compiler flags for the SWIG target were added to the global CMAKE_C_FLAGS used for the entire project. This sets the flags uniquely for the SWIG target. The eth has a similar case for the c99 flag. There was a lingering include in dev.c that was removed. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* build: Fix build error with swigDimitri Staessens2019-03-181-3/+4
| | | | | | | | | | There is an unsafe strncpy() in the swig compilation process, which has been fixed a while back but is still not in the release version. This disables the compiler warning. It also fixes an unspecified option. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Revise UDP IPCPDimitri Staessens2019-03-181-0/+2
| | | | | | | | | | | The UDP IPCP now uses a fixed server UDP port (default 3435) for all communications. This allows passing firewalls more easily since only a single port needs to be opened. The client port can be fixed as well if needed (default random). It uses an internal eid, so the MTU of the UDP layer is reduced by 4 bytes, similar to the Ethernet IPCPs. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* ipcpd: Refactor create_r and flow_req_arrDimitri Staessens2019-03-041-4/+2
| | | | | | | | | | | The API calls for the IPCP to inform the IRMd of IPCP creation and incoming flow request had the pid_t in the call. This pid_t is removed and the getpid() call is now placed inside the function. Also refactors the cleanup for the main() functions of some of the lower IPCPs. Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks> Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>
* lib: Add initial rtt estimator to FRCTDimitri Staessens2019-02-081-0/+1
| | | | | | | | | | | | This adds a simple round-trip time estimator to FRCT. The estimate is a weighted average with deviation. The retransmission is scheduled after rtt + 2 times the deviation. A retransmit doubles the rtt estimate to avoid the no-update case when rtt suddenly increases. The rtt is estimated in microseconds and the granularity for retransmits is 256 microseconds. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* build: Update copyright to 2019Dimitri Staessens2019-02-0538-38/+38
| | | | | | | Updates the copyright notice in all sources to 2019. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Fix deallocating non-initialized np1 flowsDimitri Staessens2018-12-291-1/+1
| | | | | | | | This fixes the deallocation of non-initialized IPCP flows. These can occur when some operations are not implemented. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* include: Add a flow_join operation for broadcastDimitri Staessens2018-12-271-0/+5
| | | | | | | | | | | | This adds a new flow_join operaiton for broadcast, which is a much safer solution than overloading destination name semantics. The internal API now also has a different IPCP_FLOW_JOIN operation. The IRMd doesn't need to query broadcasts IPCPs for the name, it can just check if an IPCP with the layer name exists. The broadcast IPCP doesn't need to implement the query proxy call anymore. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* irmd: Manage shm_flow_set from IRMdDimitri Staessens2018-12-221-1/+1
| | | | | | | | | This moves the creation and destruction of shm_flow_set shared memory structures from the init to the IRMd. Now the management of all shared data objects is performed by the IRMd. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Revise du buff API towards a memory allocatorDimitri Staessens2018-10-261-11/+9
| | | | | | | | | This changes the API to the rdrbuff to treat it as a pool memory allocator. The head and tailspace to allocate in a buffer is now set system-wide instead of being passed as a parameter. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* ipcpd: Add broadcast IPCPDimitri Staessens2018-10-241-0/+1
| | | | | | | | | | This adds a broadcast IPCP that allows us to easily create multicast applications. The broadcast IPCP accepts flows for "<layer_name>.mc". A tool, obc (Ouroboros broadcast), is added that sends and reads a message to a broadcast layer. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* tools: Specify QoS cube for data transfer flows0.13.0Dimitri Staessens2018-10-191-1/+3
| | | | | | | | | The ipcp connect command can now set a specific qos cube for data transfer flows. For management flows, the tool ignores this and defaults to raw until data flows are stable enough. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* Merge branch 'testing' into beSander Vrijders2018-10-111-3/+1
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| * ipcpd: Remove stale QoS cubesDimitri Staessens2018-10-101-3/+1
| | | | | | | | | | | | | | | | There were QoS cubes defined for raw and data flows, which are now run on the best effort cube. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* | Merge branch 'testing' into beDimitri Staessens2018-10-091-6/+59
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| * lib: Define QoS specs inside header file0.12.1Sander Vrijders2018-10-091-6/+59
| | | | | | | | | | | | | | | | | | The QoS specs were defined in the source file instead of in the header file, which resulted in uninitialized structs being used, which gave rise to weird behavior in the library. Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be> Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
* | Merge branch 'testing' into beDimitri Staessens2018-10-0610-35/+40
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| * include: Fix QoS include filesDimitri Staessens2018-10-063-2/+2
| | | | | | | | | | | | | | A lot of files were unnecessarily including qoscube.h. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
| * lib: Split error checking from FRCTDimitri Staessens2018-10-051-1/+0
| | | | | | | | | | | | | | | | This splits off the CRC from FRCT so it can be set independently. Ouroboros now allows raw flows with error checking. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
| * doc: Fix fccntl man pageDimitri Staessens2018-10-051-2/+1
| | | | | | | | | | | | | | Patch for previous commit, which was broken. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
| * lib: Rename port_id to flow_idDimitri Staessens2018-10-053-9/+9
| | | | | | | | | | | | | | Renames port_id to flow_id according to updated nomenclature. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
| * doc: Update man page for fccntlDimitri Staessens2018-10-051-1/+0
| | | | | | | | | | | | | | The FLOWSFLAGS command was recently obsoleted with the removal of online reconfiguration of FRCT. Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
| * ipcpd, lib, irmd, tools: Change SDU to packetSander Vrijders2018-10-052-2/+2
| | | | | | | | | | | | | | | | This will change SDU (Service Data Unit) to packet everywhere. SDU is OSI terminology, whereas packet is Ouroboros terminology. Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be> Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
| * lib: Pass qosspec at flow allocationDimitri Staessens2018-10-054-16/+21
| | | | | | | | | | | | | | | | | | | | | | | | The flow allocator now passes the full qos specification to the endpoint, instead of just a cube. This is a more flexible architecture, as it makes QoS cubes internal to the layers. Adds endianness transforms for the flow allocator protocol in the normal IPCP. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
| * tools: Fix memleaks and buffer overflows in irm toolSander Vrijders2018-09-271-2/+2
| | | | | | | | | | | | | | | | This fixes some memleaks and potential buffer overflows in the irm tool. Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be> Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
| * include: Remove _DEFAULT_SOURCE in endian.hDimitri Staessens2018-09-271-1/+4
| | | | | | | | | | | | | | | | This removes the _DEFAULT_SOURCE definition in the endian header as it should not be there. This avoids double and conflicting definitions. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* | lib: Support for rudimentary retransmissionDimitri Staessens2018-07-272-47/+4
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | This adds rudimentary support for sending and processing acknowledgments and doing retransmission. It replaces the generic timerwheel with a specific one for retransmission. This is currently a fixed wheel allowing retransmissions to be scheduled up to about 32 seconds into the future. It currently has an 8ms resolution. This could be made configurable in the future. Failures of the flow (i.e. rtx not working) are indicated by the rxmwheel_move() function returning a fd. This is currently not yet handled (maybe just setting the state of the flow to FLOWDOWN is a better solution). The shm_rdrbuff tracks the number of users of a du_buff. One user is the full stack, each retransmission will increment the refs counter (which effectively acts as a semaphore). The refs counter is decremented when a packet is acked. The du_buff is only allowed to be removed if there is only one user left (the "stack"). When a packet is retransmitted, it is copied in the rdrbuff. This is to ensure integrity of the packet when multiple layers do retransmission and it is passed down the stack again. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* Merge branch 'testing' into beSander Vrijders2018-06-131-17/+57
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| * lib: Use macros for all time utility functions0.11.9Dimitri Staessens2018-06-131-17/+57
| | | | | | | | | | | | | | | | | | This replaces the time utility functions with macros. This avoids using library functions in the tools and also slightly speeds up the implementation. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* | Merge branch 'testing' into beSander Vrijders2018-06-081-3/+0
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| * irmd: Remove shm_sanitizer threadDimitri Staessens2018-06-081-3/+0
| | | | | | | | | | | | | | | | | | | | This removes the sanitizer thread in the IRMd to avoid the IRMd eating the CPU when the buffer is full. The processes will clean the head PDU if there is a broken lock in the rdrbuff. Chances for a lingering tail PDU are slim. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* | lib: Add a data qos cubeDimitri Staessens2018-06-082-0/+3
|/ | | | | | | | 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>
* lib: Define default qosspecs in qos sourcesDimitri Staessens2018-06-051-0/+5
| | | | | | | | | This moves the definition of the predefined qosspecs to qos.h and qos.c. This allows applications to select them using qos_best_effort etc. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Add a QOS_RAW QoS cubeDimitri Staessens2018-06-052-1/+3
| | | | | | | | | This adds a QoS cube that allows sending packets directly over a raw flow, without an FRCT state machine. Flow allocation with a NULL qosspec will now default to such raw flows. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Simplify delta-t logicDimitri Staessens2018-06-051-2/+1
| | | | | | | | | | 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>
* build: Update default values0.11.7Sander Vrijders2018-05-291-1/+1
| | | | | | | | | | | This sets updated default values for the default build. A higher connect timeout until we have asynchronous local IPC. Disabled SWIG since the lastest gcc reports an error. IPCP flow stats enabled by default since their impact on the performance is very limited. Waiting for the directory to enroll before returning to increase stability. Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be> Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
* lib: Add event types to fqueueDimitri Staessens2018-05-142-16/+27
| | | | | | | | | | | The event type of the current event in the fqueue can now be requested using the fqueue_type() command. Currently events for packets (FLOW_PKT), flows (FLOW_UP, FLOW_DOWN) and allocation (FLOW_ALLOC, FLOW_DEALLOC) are specified. The implementation only tracks FLOW_PKT at this point. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Make UNIX socket buffer size configurable0.11.3Sander Vrijders2018-05-032-3/+8
| | | | | | | | | | This makes the buffer size used by the UNIX sockets configurable. In case of a lot of IPCPs in the system it might become too small with the default value, resulting in irm command failures. The user can now easily configure it with an adequate value. Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be> Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be>
* irmd: Fix memleak when failing to list ipcpsDimitri Staessens2018-03-221-1/+2
| | | | | | | | | The list_ipcps call had a memleak in the failure case. Also fixes a compiler warning for a possible uninitialized variable and renumbers the gpb ipcpd message fields. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Simplify reg/unreg APIDimitri Staessens2018-03-222-12/+19
| | | | | | | | | | | | | | | | | | | | The reg/unreg API is simplified to registering and unregistering a single name with a single IPCP. The functionality associated with registering names was moved from the IRMd to the irm tool. The function to list IPCPs was simplified to return all IPCPs in the system with their basic properties needed for management. The above changes led to some needed changes in the irm tool and the management functions that were depending on the previous behaviour of list_ipcps. Command line functionality to list IPCPs in the system is also added to the irm tool. Some older code was refactored. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Allow disabling partial readDimitri Staessens2018-03-191-0/+1
| | | | | | | | | | | | | | This allows disabling partial reads. It adds a flag FLOWFRNOPART that disables partial reads. Partial read is different from partial delivery (FRCTFPARTIAL), which allows delivery of fragments of an incomplete packet and thus potentially corrupted data. FLOWFRNOPART will never deliver corrupted data (unless FRCTFPARTIAL is also set). If FLOWFRNOPART is set and the buffer provided to flow_read is too small for the SDU, that SDU will be discarded and -EMSGSIZE is returned; Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Implement timeout on blocking writeDimitri Staessens2018-03-121-5/+6
| | | | | | | | | | This completes the implementation of the SNDTIMEO for a blocking write. Fixes #6. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* ipcpd: Add IPCP over DIX EthernetDimitri Staessens2018-03-101-2/+6
| | | | | | | | | | | | | | | | | | This adds an IPC Process that uses DIX Ethernet with an Ethertype that is configurable at bootstrap. This allows parallel DIX layers over the same Ethernet network with different Ethertypes (and one LLC layer). It allows jumbo frames in the future, and should avoid the problems we have with some routers not handling LLC traffic very well. The destination endpoint ID is sent as a 16 bit integer, so the maximum payload is 1498 bytes in standard Ethernet, and 8998 bytes when Jumbo frames are used. The implementation is very similar to the Ethernet LLC IPCP, so it is implemented using preprocessor macros in the single source instead of duplicating code. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Add fccntl operation to get queue lengthsDimitri Staessens2018-02-281-3/+7
| | | | | | | | | | This adds the FLOWGRXQLEN and FLOWGTXQLEN operations to fccntl to get the number of packets that are in the receive and transmit buffers respectively. The flow statistics are updated to show these queue lengths. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* lib: Get RIB attributes from componentDimitri Staessens2018-02-201-0/+5
| | | | | | | | | | | | This revises the RIB so it gets the complete file attribute list from the component instead of setting some attributes in the library. This will allow setting read/write access later on in the component itself. The time of last change of lsdb entries in the file system is now set to the time of the last received Link State Update for that entry. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
* ipcpd: Revise Data Transfer component0.10.0Dimitri Staessens2018-02-134-13/+13
| | | | | | | | | | | This makes the TTL non-optional and allows the maximum (initial) value of the TTL to be specified at bootstrap (the default is set to 60). The fd in the DT PCI is now called EID (Endpoint ID). The names "dif" and "ae" have been replaced by "layer" and "component" respectively in all sources. Signed-off-by: Dimitri Staessens <dimitri.staessens@ugent.be> Signed-off-by: Sander Vrijders <sander.vrijders@ugent.be>
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