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* lib: Refactor shm_du_map to shm_rdrbuffdimitri staessens2016-08-295-57/+75
| | | | | | | | | | The shm_du_map is renamed to shm_rdrbuff to reflect the Random Deletion Ringbuffer used in the implementation. The close_on_exit call is removed and SDUs are cleaned up by the application in the ap_fini() call. This required a non-blocking peek() operation in the shm_ap_rbuff. Some initial implementation for future support of qos cubes has been added to the shm_rdrbuff.
* ipcpd: Report pid on shutdowndimitri staessens2016-08-264-8/+8
| | | | IPCPs will report their pid on shutdown for faster debugging.
* ipcpd, normal: Safe handling of CDAP requestsdimitri staessens2016-08-256-77/+282
| | | | Destruction of the object in the reply stage was unsafe.
* ipcpd: normal: Fix uninitialized valueSander Vrijders2016-08-251-6/+9
| | | | This removes the ret value which was not being set correctly.
* Merged in dstaesse/ouroboros/be-irmd-fix (pull request #222)Sander Vrijders2016-08-251-3/+4
|\ | | | | | | Fix locks
| * ipcpd, normal: Fix bad lockdimitri staessens2016-08-251-3/+4
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* | Merged in dstaesse/ouroboros/be-ipcp-locks (pull request #221)Sander Vrijders2016-08-248-460/+389
|\| | | | | | | ipcpd: Revised locking
| * ipcpd: Revised lockingdimitri staessens2016-08-248-460/+389
| | | | | | | | | | | | The state lock was reverted to an rwlock to avoid interference of management functions with the fast path. IPCPs now close without calling unsafe functions in the signal handler.
* | Merged in sandervrijders/ouroboros/be-normal-flow-alloc (pull request #219)dimitri staessens2016-08-248-33/+646
|\ \ | |/ |/| | | ipcpd: normal: Add initial steps for N+1 flow allocation
| * ipcpd: normal: Add initial steps for N+1 flow allocationSander Vrijders2016-08-238-33/+646
| | | | | | | | | | | | | | | | | | | | | | This adds the initial framework for flow allocation between two N+1 endpoints. The FMGR will receive flow allocation requests and will create a connection as a result, addressed to the right address, it will also pass a flow allocation message to this address. Upon receipt on the other side, the FMGR will be receive a flow allocation message and a pointer to a new connection. The FMGR can then accept or destroy the connection. This commit also introduces the RMT function, which is needed by the FRCT to forward its SDUs on the right file descriptor.
* | irmd, ipcp: Unlink file for UNIX socketsdimitri staessens2016-08-221-0/+6
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* | ipcpd: Fix potential memleaksdimitri staessens2016-08-211-2/+8
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* irmd, lib: Rebuild the IRMd data modeldimitri staessens2016-08-212-10/+1
| | | | | | | | | | | | | | | | | | | | | | The complete data model inside the IRMd has been restructured. The bind operation was revised to allow binding of AP and AP instances and register those names with different DIFs (see "irm bind" for details). Server applications require to call ap_init with a server name argument, client application that do not the be reachable over any DIF can call ap_init(NULL). Calling ap_init for a client with a specified name will not have adverse consequences for the application, but will consume unnecessary resources in the IRMd. Application servers can now be started at any point after the IRMd has been started. Starting servers, binding AP names and registering names in DIFs can be performed in any order that does not defy temporal logic. Supports naming instances by their pid. In case of IPCP Instances created with the IRM tool, the name assigned during "irm ipcp create" can be used. All the changes required updates in the tools.
* ipcpd: normal: Handle enrollment repliesSander Vrijders2016-08-193-11/+63
| | | | | | | | This adds a condition variable with a timeout to the CDAP request so that we can respond correctly to the answer from the remote. It also adds a timeout to the condition variable waiting on completion of enrollment. Furthermore, for every CDAP callback a new thread is now spawned, to avoid deadlocking in case a callback is stuck.
* ipcpd: shim-udp: Change nsupdate and nslookup checkSander Vrijders2016-08-161-28/+17
| | | | | | | Previously it was up to the admin to choose whether or not to enable DDNS. Now the build just checks if the executables can be found, and if they are available DDNS functionality is enabled, else it is disabled.
* ipcpd: Fix bootstrap with api_binddimitri staessens2016-08-125-10/+27
| | | | | Calling api_bind during bootstrap caused the IRMd to lock up. api_bind is now called after the normal completes bootstrapping.
* ipcpd: Add condition variable to IPCP stateSander Vrijders2016-08-118-230/+235
| | | | | | | This adds a condition variable to the IPCP state, so that upon state changes any listeners to state changes can be notified. It also replaces the read/write lock with a mutex in order to be able to do so.
* ipcpd: Fix deep copy of dif_configdimitri staessens2016-08-112-5/+7
| | | | | conf->dif_name was not copied from the dif_config gpb message. Fixes some logs.
* ipcpd: normal: Fix log messagedimitri staessens2016-08-111-1/+1
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* ipcpd: Put correct max SDU length in shim-eth-llcSander Vrijders2016-08-111-22/+7
| | | | | Now the correct max length of an SDU is checked upon writing a frame, as well as on receiving it.
* Merged in dstaesse/ouroboros/be-api-bind (pull request #203)Sander Vrijders2016-08-101-0/+5
|\ | | | | | | lib, irmd: Bind AP instances to AP_subsets
| * lib, irmd: Bind AP instances to AP_subsetsdimitri staessens2016-08-101-0/+5
| | | | | | | | | | | | | | This call will allow grouping AP instances of a certain AP together which are configured identically. Adds the bind operation to dev and updates the applications to make use of this call. Flow_alloc is now only called with the pid and doesn't send the apn anymore.
* | ipcpd: Add MSG_DONTWAIT flag to shim-eth-llcSander Vrijders2016-08-101-1/+1
| | | | | | | | | | | | This adds the MSG_DONTWAIT flag to the send function of the shim-eth-llc, when using PF_PACKET. Previously the send would return only after the frame was sent, resulting in poor performance.
* | lib, irmd, ipcp: Add socket timeoutSander Vrijders2016-08-101-0/+7
|/ | | | | | This will add a timeout to the socket so that a process won't be blocked by the actions of the process with which it is communicating over the socket.
* Merged in sandervrijders/ouroboros/be-create-ipcp (pull request #200)dimitri staessens2016-08-104-0/+28
|\ | | | | | | ipcp, irmd, lib: Notify IRMd upon IPCP initialization
| * ipcp, irmd, lib: Notify IRMd upon IPCP initializationSander Vrijders2016-08-104-0/+28
| | | | | | | | | | | | This will notify the IRMd when the IPCP is initialized and ready to receive messages. Previously a bootstrap could fail since the IPCP was not listening to the socket yet.
* | ipcpd: Fix locking problem in local IPCPSander Vrijders2016-08-101-2/+2
|/ | | | | A lock was not being taken to check the state, but then it was released if the state was not IPCP_NULL, resulting in a segfault.
* ipcpd: Correct cleanup of filedescriptordimitri staessens2016-08-091-2/+2
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* ipcpd: Fix locking of shim-eth-llcSander Vrijders2016-08-091-9/+2
| | | | | | This changes the amount of time the shim-eth-llc will hold the IPCP state lock when sending and receiving frames. Before it was holding the lock for too long.
* ipcpd: Fix missing close of lsockfddimitri staessens2016-08-081-0/+3
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* ipcpd: normal: Allow exchange of static DIF informationSander Vrijders2016-08-088-27/+249
| | | | | | This adds the functionality of exchanging the static DIF information between 2 DIF members. After exchange the enrollment is stopped, and the IPCP that initiated enrollment transitions to the enrolled state.
* ipcpd: Fix memleakdimitri staessens2016-08-053-0/+6
| | | | The entry from the ringbuffer was never freed, causing memleak per SDU.
* irmd: Fix destroying allocated flowsdimitri staessens2016-08-041-1/+1
| | | | | When a flow was in FLOW_ALLOCATED state, it would not change to NULL state and irm_flow_destroy would hang forever.
* ipcpd: Fix memory leaksdimitri staessens2016-08-046-44/+55
| | | | ipcp-data was not correctly destroyed.
* ipcpd: Fix incorrect cleanup of fddimitri staessens2016-08-041-2/+7
| | | | The cleanup was trying to close a pointer to the file descriptor.
* lib: Revise blocking I/Odimitri staessens2016-08-031-9/+9
| | | | | | | | | Blocking I/O now uses condition variables in the shared memory instead of busy waiting. Timeouts can be specified. This requires the size of the rbuffs and du_map to be the same, to guarantee that when the shm_du_map is not full, the ap_rbuffs can't be full either. Added the timeout option to the flow for future use.
* Merged in dstaesse/ouroboros/be-llc (pull request #183)Sander Vrijders2016-08-011-75/+79
|\ | | | | | | shim-eth-llc: Fix for bad drivers
| * shim-eth-llc: Fix for bad driversdimitri staessens2016-08-011-75/+79
| | | | | | | | | | | | | | | | It seems like drivers are setting the Ethernet length field wrong when sending an LLC message. The LLC shim now writes the payload length in the frame to circumvent the wrong information from the driver. Also fixes deallocation.
* | Merged in sandervrijders/ouroboros/be-enrolment (pull request #182)dimitri staessens2016-08-0110-60/+422
|\ \ | |/ |/| | | Be enrolment
| * ipcpd: normal: Allow initiating enrollmentSander Vrijders2016-08-017-45/+75
| | | | | | | | | | | | | | This will add more functionality for enrolling two normal IPCPs with each other. Some bugs were fixed in CDAP. Now on enrolling, an IPCP will send a START message to the other IPCP. Next step is syncing the RIBs.
| * Merge remote-tracking branch 'upstream/be' into be-enrolmentSander Vrijders2016-07-281-1/+15
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| * \ Merge remote-tracking branch 'upstream/be' into be-enrolmentSander Vrijders2016-07-272-4/+0
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| * | | ipcpd: normal: Provide initial steps for enrollmentSander Vrijders2016-07-277-37/+369
| | | | | | | | | | | | | | | | | | | | | | | | This provides the normal IPCP with bootstrapping and the initial steps for enrollment. Next step is actually reacting to an enrollment request and sending the data transfer constants.
* | | | lib: Portability to FreeBSDdimitri staessens2016-07-291-6/+73
| |_|/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | Various portability fixes for FreeBSD. POSIX requires shm file names to start with a "/" to be portable. lseek(2) can be undefined on POSIX shm, replaced with ftruncate(2). IRMd check on existing lockfile more portable. FreeBSD 11.0 is preferred as it natively supports robust mutexes. Full working LLC implementation pending.
* | | ipcpd: shim-eth-llc: Use correct frame lengthSander Vrijders2016-07-281-1/+15
| |/ |/| | | | | | | | | | | | | Upon receipt of a frame, the minimum of the length reported in the frame and the frame length reported by kernel is taken. Some device drivers change the length in the frame. Some others add padding, making the length reported by the kernel too high. This is a lousy workaround to make it work on as many systems as possible.
* | build: Fix wrong inclusionSander Vrijders2016-07-262-4/+0
|/ | | | | | The protobuf include directory was not being correctly handed to the compiler when building. Now the include directory is added project-wide. And the protobuf package is searched for only once.
* ipcpd: normal: Add main loop to normal IPCPSander Vrijders2016-07-153-10/+261
| | | | | | This adds the main loop to the normal IPCP, just like it is present in the shim IPCPs. So in essence, the normal IPCP now reacts to all operations from ipcp.h.
* ipcpd: normal: Establish N-1 management flowsSander Vrijders2016-07-1410-18/+409
| | | | | | | | | This adds the intial implementation of establishing management N-1 flows between normal IPCPs. On calling fmgr_mgmt_flow, a management flow will be setup to a certain destination IPCP. After flow allocation, the fd is handed to the RIB manager. The flow manager also listens for incoming flow requests. In case they are management flows, they are handed to the RIB manager, otherwise to the FRCT.
* ipcpd: Add initial headers for the normal IPCPSander Vrijders2016-07-123-0/+124
| | | | | | | | | This adds the initial headers for the normal IPCP. The normal IPCP consists of 3 main components: * The flow manager, in charge of managing N and N-1 flows. * The RIB manager, in charge of managing the RIB * FRCT: The flow and retransmission control task
* lib: Remove N-1 DIF param from enroll operationSander Vrijders2016-07-122-4/+2
| | | | | | This removes the parameter N-1 DIF from the enroll operation. IPCPs should just allocate a flow to a DIF name and let the N-1 DIF resolve it.
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