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2019-06-25tcp: delivery rate estimatorFlorin Coras1-0/+12
Type: feature First cut implementation with limited testing. The feature is not enabled by default and the expectation is that cc algorithms will enable it on demand. Change-Id: I92b70cb4dabcff0e9ccd1d725952c4880af394da Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-05-16Add transport_opts to connect_sock bapiNathan Skrzypczak1-0/+18
Needed by QUIC to distinguish Q/Ssessions Change-Id: Idcc9e46f86f54a7d06ce6d870edec1766e95c82d Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2019-04-25session: use teps in accept/connect notificationsFlorin Coras1-18/+15
Change-Id: I58e713661a38cecbfdebd4609292d9d12e880cd2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-24Add get_endpoint in transport vftAloys Augustin1-0/+51
This allows QUIC & TLS specific logic to be implemented, and meaningfull IP/port to be returned when connection is overridden. Change-Id: Id79c59fe4d7b16d36f0e96ad3e281c4026b5fe65 Signed-off-by: Aloys Augustin <aloaugus@cisco.com>
2019-04-02tcp: improve rcv process ack processingFlorin Coras1-1/+1
- Avoid doing cc in closing states. - Rest connections closed with unread data Change-Id: I97d46b0459f03ea5439eeb0f233b6c17d3e06dfd Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-29Integrate first QUIC protocol implementationNathan Skrzypczak1-0/+10
Currently supports on single stream exposed through standard internal APIs Based on libquicly & picotls by h2o Change-Id: I7bc1ec0e399d1fb02bfd1da91aa7410076d08d14 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2019-03-28session: cap max burst to a constantFlorin Coras1-17/+2
Change-Id: I1919d3844936486f04f2bfde24dc7e0d9121927a Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-25Fix unformat proto UDPC / UDP conflictNathan Skrzypczak1-4/+4
Change-Id: I9161959536c37f6f730650c9c0058a41af8e7001 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2019-03-02session: cleanup/rename functionsFlorin Coras1-1/+1
- remove unused functions - rename old "stream" functions Change-Id: Icbb03daa9f9f1c58b5be5c38aa8a9cbcf9159b47 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-06transport: cleanupFlorin Coras1-8/+26
- move transport specific types to transport_types - add transport wrapper functions for interaction with transport protocol vfts Change-Id: I93f70d884585fc2f41c4a605e310c80e8a8972f2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-05session: cleanup part 3Florin Coras1-0/+13
Aggregate session specific types, getters and setters under session_types.h Change-Id: Ib205337502654969d60c72d1800c90247e1a9068 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-04session: cleanup part 1Florin Coras1-1/+1
Rename core data structures. This will break compatibility for out of tree builtin apps. - stream_session_t to session_t - server_rx/tx_fifo to rx/tx_fifo - stream_session.h to session_types.h - update copyright Change-Id: I414097c6e28bcbea866fbf13b8773c7db3f49325 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-02session: improve show session cliFlorin Coras1-2/+1
Change-Id: If30cea80058752cedcc6ecc38e90bef8732c83d3 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-04vcl: test refactor and improvementsFlorin Coras1-1/+4
Change-Id: I92f415bf253d6e051ec9d94ebeb98f081b2a0293 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-14Remove c-11 memcpy checks from perf-critical codeDave Barach1-4/+5
Change-Id: Id4f37f5d4a03160572954a416efa1ef9b3d79ad1 Signed-off-by: Dave Barach <dave@barachs.net>
2018-11-07tcp: consume incoming buffers instead of reusingFlorin Coras1-5/+6
Instead of reusing buffers for acking, consume all buffers and program output for (dup)ack generation. This implicitly fixes the drop counters that were artificially inflated by both data and feedback traffic. Moreover, the patch also significantly reduces the ack traffic as we now only generate an ack per frame, unless duplicate acks need to be sent. Because of the reduced feedback traffic, a sender's rx path and a receiver's tx path are now significantly less loaded. In particular, a sender can overwhelm a 40Gbps NIC and generate tx drop bursts for low rtts. Consequently, tx pacing is now enforced by default. Change-Id: I619c29a8945bf26c093f8f9e197e3c6d5d43868e Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-02session: measure dispatch period only if under loadFlorin Coras1-7/+16
Also reset pacer on tcp retransmit timeout Change-Id: I5a9edee4c00d1d169248d79587a9b10437c2bd87 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-01tcp: fast retransmit pacingFlorin Coras1-8/+32
Force pacing for fast retransmit to avoid bursts of retransmitted packets. Change-Id: I2ff42c328899b36322c4de557b1f7d853dba8fe2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-28session: extend connect api for internal appsFlorin Coras1-67/+106
Change-Id: Ie4c5cfc4c97acb321a46b4df589dc44de1b616ba Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-25session/tcp: improve cliFlorin Coras1-0/+57
Change-Id: I91c9d040fc9b9b63f7109eeaac334c47fb1226cf Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-25tcp/session: add tx pacerFlorin Coras1-0/+111
Adds tx pacing infrastructure for transport protocols that want to use it. Particularly useful for connections with non-negligible rtt and constrained network throughput as it avoids large tx bursts that lead to local interface tx or network drops. By default the pacer is disabled. To enabled it for tcp, add tx-pacing to tcp's startup conf. We are still slightly inefficient in the handling of incoming packets in established state so the pacer slightly affect maximum throughput in low lacency scenarios. Change-Id: Id445b2ffcd64cce015f75b773f7d722faa0f7ca9 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-23c11 safe string handling supportDave Barach1-1/+1
Change-Id: Ied34720ca5a6e6e717eea4e86003e854031b6eab Signed-off-by: Dave Barach <dave@barachs.net>
2018-06-11udp: fix for multiple workers and add testFlorin Coras1-0/+6
Since the main thread is not used for session polling anymore, when vpp is started with multiple wokers, allocate connections on the first. Also add a simple udp make test. Change-Id: Id869f5d89e0fced51048f0384fa86a5022258b7c Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-05-13session: alloc one frame per output node dispatchFlorin Coras1-0/+6
Change-Id: I1f7877af61f3726cfb7b93ce7893f6df23e866a6 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-04-18udp/session: refactor to support dgram modeFlorin Coras1-0/+16
- adds session layer support for datagram based protocols - updates udp to work in pure connectionless and datagram mode. The existing connected mode is now 'accessible' for apps as a dummy UDPC, as in, connected udp, protocol. - updates udp_echo, echo client, echo server code to work in datagram mode. Change-Id: I2960c0d2d246cb166005f545794ec31fe0d546dd Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-03-02session: first approximation implementation of tlsFlorin Coras1-0/+4
It consists of two main parts. First, add an application transport type whereby applications can offer transport to other applications. For instance, a tls app can offer transport services to other applications. And second, a tls transport app that leverages the mbedtls library for tls protocol implementation. Change-Id: I616996c6e6539a9e2368fab8a1ac874d7c5d9838 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-01-27Fix session/tcp coverity warningsFlorin Coras1-0/+7
Change-Id: I5c404eacb4a6c1e16485a6656168d9171ff49a8b Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-01-26session: move builtin apps to their own folderFlorin Coras1-1/+4
This consolidates builtin apps under session-apps folder. It also removes duplicate builtin echo server/client implementations. Change-Id: I75ed879399c5aa9b75b1eb38b33aedf69dd8df3f Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-01-24SCTP stack (RFC4960)Marco Varlese1-0/+7
== CONTENT == * SCTP chunks definition as per RFC4960; * Helper functions to set/get values to/from the corresponding chunks; * Hooks to the session/application layers; * Complete state-machine handling; * Implementation for unexpected chunk received in a certain state (state-machine error handling) * Support for 1-single connection; * Sample application to test receive/transmit data-path; * Test to validate SCTP stack; Change-Id: I1b55c455ab400be9513f4e094dadfc3181d2ebc9 Signed-off-by: Marco Varlese <marco.varlese@suse.com>
2017-12-11session: generalize handling of network transportsFlorin Coras1-14/+53
- compute session type out of transport and network protos - make session, session lookup and session queue code network protocol agnostic This does not update the session layer to support non-ip network layer protocols Change-Id: Ifc2f92845e158b649d59462eb7d51c12af536691 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-11-29session: fix preallocation of local endpoint tableFlorin Coras1-4/+8
Change-Id: I67a73e31bda9e497859297fcc1765e880572884a Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-10-28session: rules tablesFlorin Coras1-0/+32
This introduces 5-tuple lookup tables that may be used to implement custom session layer actions at connection establishment time (session layer perspective). The rules table build mask-match-action lookup trees that for a given 5-tuple key return the action for the first longest match. If rules overlap, ordering is established by tuple longest match with the following descending priority: remote ip, local ip, remote port, local port. At this time, the only match action supported is to forward packets to the application identified by the action. Change-Id: Icbade6fac720fa3979820d50cd7d6137f8b635c3 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-10-16udp: refactor udp codeFlorin Coras1-0/+306
Change-Id: I44d5c9df7c49b8d4d5677c6d319033b2da3e6b80 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-07-25Cleanup/refactor session layer codeFlorin Coras1-64/+0
Change-Id: Ica99e8cb919fca6b069c37c969d60e8ccc2c6bf9 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-03-01VPP-598: tcp stack initial commitDave Barach1-0/+64
Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351 Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Florin Coras <fcoras@cisco.com>