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* ipcpd: Add congestion avoidance policiesDimitri Staessens2020-12-021-27/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds congestion avoidance policies to the unicast IPCP. The default policy is a multi-bit explicit congestion avoidance algorithm based on data-center TCP congestion avoidance (DCTCP) to relay information about the maximum queue depth that packets experienced to the receiver. There's also a "nop" policy to disable congestion avoidance for testing and benchmarking purposes. The (initial) API for congestion avoidance policies is: void * (* ctx_create)(void); void (* ctx_destroy)(void * ctx); These calls create / and or destroy a context for congestion control for a specific flow. Thread-safety of the context is the responsability of the flow allocator (operations on the ctx should be performed under a lock). ca_wnd_t (* ctx_update_snd)(void * ctx, size_t len); This is the sender call to update the context, and should be called for every packet that is sent on the flow. The len parameter in this API is the packet length, which allows calculating the bandwidth. It returns an opaque union type that is used for the call to check/wait if the congestion window is open or closed (and allowing to release locks before waiting). bool (* ctx_update_rcv)(void * ctx, size_t len, uint8_t ecn, uint16_t * ece); This is the call to update the flow congestion context on the receiver side. It should be called for every received packet. It gets the ecn value from the packet and its length, and returns the ECE (explicit congestion experienced) value to be sent to the sender in case of congestion. The boolean returned signals whether or not a congestion update needs to be sent. void (* ctx_update_ece)(void * ctx, uint16_t ece); This is the call for the sending side top update the context when it receives an ECE update from the receiver. void (* wnd_wait)(ca_wnd_t wnd); This is a (blocking) call that waits for the congestion window to clear. It should be stateless (to avoid waiting under locks). This may change later on if passing the context is needed for different algorithms. uint8_t (* calc_ecn)(int fd, size_t len); This is the call that intermediate IPCPs(routers) should use to update the ECN field on passing packets. The multi-bit ECN policy bases the value for the ECN field on the depth of the rbuff queue packets will be sent on. I created another call to grab the queue depth as fccntl is write-locking the application. We can further optimize this to avoid most locking on the rbuff. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Default ocbr to sleep and add --spin optionDimitri Staessens2020-12-021-1/+4
| | | | | | | | | | The ocbr client was spinning the CPU by default, which made sense on lab servers with dual xeons, but not so much for average users. Now sleeping becomes the default. Busy waiting can be enabled using --spin if needed. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Use read timeouts in ocbr serverDimitri Staessens2020-11-251-1/+3
| | | | | | | | | The ocbr server was using non-blocking reads (probably because we didn't have read timeouts when we wrote it) and was using a whole CPU core per thread. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Fix error handling in oping write threadDimitri Staessens2020-10-111-3/+0
| | | | | | | | | The function was returning under a cleanup handler, which is not allowed. We don't do anything with the return value if the write thread ends, so just stopping the thread is fine. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Improve locking in oping serverDimitri Staessens2020-09-251-9/+15
| | | | | | | | | There was a dealloc() call in oping server under mutex, which could leave that mutex locked when the thread was cancelled, causing oping to hang on exit. This avoids calling dealloc under lock. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Remove some unused variables0.17.4Dimitri Staessens2020-05-021-1/+1
| | | | | | | The compiler spotted some variables that weren't really used. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Stop oping client cleanly on bad writeDimitri Staessens2020-05-021-0/+1
| | | | | | | | On a bad write, the writer thread would shutdown, leaving the client hanging. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* lib: Return number of written bytes on flow_write0.17.0Dimitri Staessens2020-03-156-10/+11
| | | | | | | | | This is more in line with the write() system call and prepares for partial writes. Partial writes are disabled by default (and not yet implemented). Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* irm: Revise naming APIDimitri Staessens2020-03-1510-34/+454
| | | | | | | | | | | | | | | | | | | | | | | This revises the naming API to treat names (or reg_name in the source) as first-class citizens of the architecture. This is more in line with the way they are described in the article. Operations have been added to create/destroy names independently of registering. This was previously done only as part of register, and there was no way to delete a name from the IRMd. The create call now allows specifying a policy for load-balancing incoming flows for a name. The default is the new round-robin load-balancer, the previous behaviour is still available as a spillover load-balancer. The register calls will still create a name if it doesn't exist, with the default round-robin load-balancer. The tools now have a "name" section, so the format is now irm name <operation> <name> ... Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* lib, ipcpd: piggyback ECDHE on flow allocationDimitri Staessens2020-02-252-0/+4
| | | | | | | | | | | The initial implementation for the ECDHE key exchange was doing the key exchange after a flow was established. The public keys are now sent allowg on the flow allocation messages, so that an encrypted tunnel can be created within 1 RTT. The flow allocation steps had to be extended to pass the opaque data ('piggybacking'). Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* Add equal-cost multipath routing policyDimitri Staessens2020-02-161-1/+5
| | | | | | | | | | This adds an equal-cost multipath routing policy to Ouroboros, based on Nick Aerts' code. When selected, flows will send packets over all paths with equal cost (hop count). Path selection is round-robin. It does not yet take into account flows that are down. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Configure PFF from routing policyDimitri Staessens2020-02-161-15/+1
| | | | | | | | | | | | The Packet Forwarding Function (PFF) was user-configurable using the irm tool. However, this isn't really wanted since the PFF is dictated by the routing algorithm. This moves the responsability for selecting the correct PFF from the network admin to the unicast IPCP implementation. Each routing policy now has to specify which PFF it will use. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update copyright to 20200.16.0Dimitri Staessens2020-01-0235-35/+35
| | | | | Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Fix name option in ovpnDimitri Staessens2019-09-151-1/+1
| | | | | | | The --name option is not of optional_argument type. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Add encryption option to ovpnDimitri Staessens2019-08-311-7/+15
| | | | | | | | This adds a -C, --crypt option to the ovpn tool to easily create AES encrypted IP tunnels. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Use time_utils from toolsDimitri Staessens2019-08-314-2/+7
| | | | | | | | The ocbr tool was still using the non-public time_utils from the library instead of the version in tools. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Refactor normal to unicastDimitri Staessens2019-07-296-25/+25
| | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd: Revise UDP IPCPDimitri Staessens2019-03-181-3/+16
| | | | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* build: Update copyright to 2019Dimitri Staessens2019-02-0535-35/+35
| | | | | | | Updates the copyright notice in all sources to 2019. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Allow enrollment with destination IPCPDimitri Staessens2019-01-161-11/+52
| | | | | | | | | | | | | | | | | | The irm enroll tool had a semantic to enroll with a layer name, but this is not checked. Now the enroll command will retrieve the correct layer name that the IPCP got from the actual enrollment procedure. The irm enroll now has two string parameters, a dst and a layer, which cannot be both NULL. If only dst is specified, the IPCP will enroll with that name; autobind will bind with the layer name. If only layer is specified, the IPCP will enroll with the layer name, and perform a check that the layer name retrieved from enrollment is indeed the layer name before possibly autobinding. If both dst and layer are specified, the IPCP will enroll with dst and perform a check that the enrollment was in the expected layer. Basically only specifying the layer name is a shorthand for dst == layer. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Rename "normal" to "unicast"Dimitri Staessens2019-01-023-9/+9
| | | | | | | This renames the normal IPCP to unicast in the irm toolkit. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* include: Add a flow_join operation for broadcastDimitri Staessens2018-12-271-4/+4
| | | | | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Fix server name argument in opingDimitri Staessens2018-11-301-1/+1
| | | | | | | | The --server-name option was mistyped with an underscore in the argument parser. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Add IFF_NO_PI flag to ovpnSander Vrijders2018-10-241-1/+1
| | | | | | | | The flag IFF_NO_PI is needed to make sure that no extra protocol header is added to the payload that is received on the TUN interface. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* ipcpd: Add broadcast IPCPDimitri Staessens2018-10-246-22/+219
| | | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Add ovpn applicationSander Vrijders2018-10-223-0/+351
| | | | | | | | | | This adds the ovpn application which allows to send TCP/IP traffic over Ouroboros. This is done by opening a TUN interface and allocating a flow to another ovpn application so that applications using TCP/IP can be used over Ouroboros as well. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Specify QoS cube for data transfer flows0.13.0Dimitri Staessens2018-10-191-9/+33
| | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* ipcpd, lib, irmd, tools: Change SDU to packetSander Vrijders2018-10-057-26/+28
| | | | | | | | This will change SDU (Service Data Unit) to packet everywhere. SDU is OSI terminology, whereas packet is Ouroboros terminology. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Fix memleaks and buffer overflows in irm toolSander Vrijders2018-09-273-3/+12
| | | | | | | | This fixes some memleaks and potential buffer overflows in the irm tool. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Enhance irm connect and disconnect command0.11.10Sander Vrijders2018-07-232-26/+34
| | | | | | | | | | This enhances the irm connect and irm disconnect command to allow creating connections between IPCPs based on wildcard matching for the component name. In case no component was specified it sets up connections between all possible components. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Add unidirectional test to operfSander Vrijders2018-06-254-88/+208
| | | | | | | | This adds a unidirectional test to operf, which is handy for testing unidirectional streams. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* Merge branch 'testing' into beSander Vrijders2018-06-132-18/+58
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| * lib: Use macros for all time utility functions0.11.9Dimitri Staessens2018-06-132-18/+58
| | | | | | | | | | | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* | tools: Add newlines to printf statements in opingSander Vrijders2018-06-082-3/+3
| | | | | | | | | | | | | | | | There were some missing newlines in printf statements in oping. This adds them. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* | lib: Add a data qos cubeDimitri Staessens2018-06-081-1/+4
|/ | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Add quiet option to opingDimitri Staessens2018-06-062-18/+32
| | | | | | | | | This adds a --quiet -Q option to oping so it will only print the statistics summary. Also fixes a division by 0 if duration is specified with interval 0. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Support qosspecs in opingDimitri Staessens2018-06-052-17/+39
| | | | | | | | The oping tool can now select a qos spec to use. Allowed specs are predefined an chosen using "raw", "best", "video" or "voice". Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Allow specifying duration for opingDimitri Staessens2018-06-051-6/+39
| | | | | | | | | This adds a -d, --duration option to oping. Now all durations can be specified in milliseconds (ms, default), seconds (s), minutes (m), hours (h), or days(d). Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Add out-of-order statistics to opingDimitri Staessens2018-06-052-3/+16
| | | | | | | | | This adds out-of-order statistics to the oping tool. A packet is considered out-of-order if its sequence number is lower than the highest sequence number already received. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Add timestamp option to opingSander Vrijders2018-06-012-6/+22
| | | | | | | | | This adds a timestamp option to oping, similar to the one in regular ping and rinaperf, so that we can more easily correlate time and latency. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Fix bad wildcard match in irm toolSander Vrijders2018-06-011-4/+2
| | | | | | | | The pattern was matched to the string instead of the string to the pattern, which means it only worked if it was a perfect match. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Fix memleaks as reported by cppcheckSander Vrijders2018-05-252-2/+6
| | | | | | | This fixes two memleaks which were reported by cppcheck. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Disable partial reads in opingDimitri Staessens2018-05-072-3/+6
| | | | | | | | | The oping tool was using a 1500 byte buffer, but didn't account for partial reads when sending 1500 byte packets. This disables the partial reads. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Add check for irm ipcp listSander Vrijders2018-04-251-2/+9
| | | | | | | | | This adds a check in the irm ipcp list command to see if irm_list_ipcps returned an error or not. Before it was only checking if there were zero IPCPs in the system. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Fix type check when bootstrapping ipcpsDimitri Staessens2018-04-201-14/+16
| | | | | | | | The type check failed incorrectly if the type was specified because the specified type was not set. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Fix help information for irm ipcpSander Vrijders2018-04-172-3/+8
| | | | | | | | The new command 'irm ipcp list' was not being printed upon printing the usage of 'irm ipcp'. It also fixes an unchecked return value. Signed-off-by: Sander Vrijders <[email protected]> Signed-off-by: Dimitri Staessens <[email protected]>
* tools: Fix hash algorithm in ipcp_bootstrap0.11.2Dimitri Staessens2018-04-051-1/+1
| | | | | | | A bad check caused failure to set the hash algorithm for IPCPs. Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* tools: Increase read buffer in ocbr serverDimitri Staessens2018-03-253-5/+16
| | | | | | | | | | | | The ocbr server had a 1500 byte read buffer, which caused it to perform partial reads on larger SDUs, slowing it down considerably when sendin large packets. The buffer has been increased to 512KB, partial reads disabled, and the client will give an error when larger frames are sent. It will also warn if the size overflows (avoiding a SEGV). Signed-off-by: Dimitri Staessens <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* irmd: Fix memleak when failing to list ipcpsDimitri Staessens2018-03-221-1/+1
| | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
* lib: Simplify reg/unreg APIDimitri Staessens2018-03-2216-218/+662
| | | | | | | | | | | | | | | | | | | | 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 <[email protected]> Signed-off-by: Sander Vrijders <[email protected]>
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