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path: root/src/vnet/session/session_node.c
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2019-03-06session: use vpp to switch io events for ct sessionsFlorin Coras1-1/+21
Instead of allocating pairs of message queues per cut-thru session and having the applications map them, this uses vpp as an io event message switch. Change-Id: I51db1c7564df479a7d1a3288342394251fd188bb Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-02session: cleanup/rename functionsFlorin Coras1-13/+13
- remove unused functions - rename old "stream" functions Change-Id: Icbb03daa9f9f1c58b5be5c38aa8a9cbcf9159b47 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-02session: cleanup session event typesFlorin Coras1-18/+18
Change-Id: I87bdf705341dd760f0be907a663aa64140977d39 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-01session: refactor local connectsFlorin Coras1-28/+32
- Switches local connects to cut-thru transport - Removes local sessions as a separate session type Change-Id: I997c6355d8c8e4f2110678f785b0f5d96bba47f7 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-23session: separate local session logicFlorin Coras1-0/+1
Move local session to separate header and source files. First step to refactoring local sessions. Change-Id: I280fdfef20ba8a0977d15c1c8ce030ea2fb72dde Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-09buffers: fix typoDamjan Marion1-1/+1
Change-Id: I4e836244409c98739a13092ee252542a2c5fe259 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-02-06buffers: make buffer data size configurable from startup configDamjan Marion1-1/+1
Example: buffers { default data-size 1536 } Change-Id: I5b4436850ca18025c9fdcfc7ed648c2c2732d660 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-02-06transport: cleanupFlorin Coras1-4/+5
- 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 2Florin Coras1-2/+2
Move app worker logic to app_worker.c Change-Id: Ic5e5735b2884f006c064d023f491aa6888114810 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-04session: cleanup part 1Florin Coras1-39/+37
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: remove local buffer cacheFlorin Coras1-33/+14
Change-Id: I71ccb39c56962fe0160d3f4c83453e72d2dd3030 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-24session/vcl: support worker ownership change for listenersFlorin Coras1-2/+2
Change-Id: I2ad54b20b96f10b009c3e651b2a2f885577ca5b6 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-10session/vcl: improve fifo tx notificationsFlorin Coras1-32/+32
Change-Id: Ied476c417c8ba5b4d7c615125c36eecd9ca64fbc Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-05vcl/session: add api for changing session app workerFlorin Coras1-1/+84
In case of multi process apps, after forking, the parent may decide to close part or all of the sessions it shares with the child. Because the sessions have fifos allocated in the parent's segment manager, they must be moved to the child's segment manager. Change-Id: I85b4c8c8545005724023ee14043647719cef61dd Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-02Fixes for buliding for 32bit targets:David Johnson1-3/+4
* u32/u64/uword mismatches * pointer-to-int fixes * printf formatting issues * issues with incorrect "ULL" and related suffixes * structure alignment and padding issues Change-Id: I70b989007758755fe8211c074f651150680f60b4 Signed-off-by: David Johnson <davijoh3@cisco.com>
2019-01-01buffers: remove unused codeDamjan Marion1-2/+1
Change-Id: If2bbfbc52994f5de0879763e0b7a7864498debb6 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-01-01vcl/ldp: add write msg function and fine tuningFlorin Coras1-2/+14
Allows app to push data. Additionally, ensure reset/close replies are not sent unless vcl closes the session. Change-Id: Icbbf933cf57b55cfbcc7b802af0f83919a066f65 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-28session: free session after transport and app confirmFlorin Coras1-2/+2
In addition to that, a bit of refactoring. Change-Id: Iea1eabc2167bcdef185ec53bc09bae087c5398e6 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-19tcp/session: notify transport of close when tx fifo is not emptyFlorin Coras1-10/+8
Disconnect transport even if tx fifo is not empty and have transport deal with the problem. In case of tcp, add timer to fin_wait_1. If it expires and we're still in established state, cleanup but only after waiting for session tx events to cleanup. Change-Id: I45759a3c43dd096bb2c03daf5372416c30678d62 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-19session: handle close before app accept replyFlorin Coras1-5/+3
Change-Id: Ic35bbf55851087d70bfacc1eab4dea4285f98c86 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-17vcl/session: handle reset/disconnect before app acceptFlorin Coras1-8/+14
Also further improves reset handling. Change-Id: I6e517632f700f181761726b965134e0c217eb06d Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-13session/tcp: support tx flush markFlorin Coras1-3/+12
For tcp this means that the last enqueued data goes out with a psh bit set. Change-Id: I29d357ecae6f02e748b59a7b799150ec73d14ba2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-05session/tcp: postpone cleanup on resetFlorin Coras1-1/+4
Change-Id: I45fd7538853f84c6c8bf804cc20acbc9601db3ba Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-14Remove c-11 memcpy checks from perf-critical codeDave Barach1-4/+4
Change-Id: Id4f37f5d4a03160572954a416efa1ef9b3d79ad1 Signed-off-by: Dave Barach <dave@barachs.net>
2018-11-08tcp: pacer and mrtt estimation improvementsFlorin Coras1-2/+2
- update pacer once per burst - better estimate initial rtt - compute smoothed average for higher precision rtt estimate Change-Id: I06d41a98784cdf861bedfbee2e7d0afc0d0154ef Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-07tcp: consume incoming buffers instead of reusingFlorin Coras1-2/+1
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>
2018-11-05tcp: send unsent data in fast recoveryFlorin Coras1-2/+2
Allows sending of unsent data in fast recovery and consolidates logic in tcp, instead of splitting it between tcp fast retransmit and tcp output path called by the session layer. Change-Id: I9b12cdf2aa2ac50b9f25e46856fed037163501fe Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-02session: measure dispatch period only if under loadFlorin Coras1-4/+7
Also reset pacer on tcp retransmit timeout Change-Id: I5a9edee4c00d1d169248d79587a9b10437c2bd87 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-01tcp: fast retransmit pacingFlorin Coras1-1/+2
Force pacing for fast retransmit to avoid bursts of retransmitted packets. Change-Id: I2ff42c328899b36322c4de557b1f7d853dba8fe2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-31session: prioritize postponed sessionsFlorin Coras1-41/+24
If sessions cannot be handled during the current dispatch loop iteration, ensure that they are first to be handled in the next. Change-Id: Ifc6215900f8cfd530d4886b58641189f0ccf9bb7 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-31session: add wrk contextFlorin Coras1-45/+49
Change-Id: I66ca0ddea872948507d078e405eb90f9f3a0e897 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-25tcp/session: add tx pacerFlorin Coras1-1/+15
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>
2018-10-05session: fix local session tagging and cleanupFlorin Coras1-1/+1
Change-Id: I0d42a0c71fea7dd669fb1fe5ded7e6e944245c7d Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-02tls: fix disconnects for sessions with pending dataFlorin Coras1-1/+8
TLS can enqueue events to itself when app session queue cannot be entirely drained. If a pending disconnect is handled before any such event, session layer may try to dequeue data on deallocated sessions. Change-Id: I5bfc4d53ce95bc16b6a01e1b0e644aafa1ca311b Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-20session/svm: add want_tx_event flag to fifoFlorin Coras1-6/+7
Have applications use explicit flag to request events from vpp when it transmits from a full fifo. Change-Id: I687c8f050a066bd5ce739d880eaec1f286038d95 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-10session: lock app worker mq for io eventsFlorin Coras1-10/+5
Also fixes vcl client/server stats and closing procedure. Change-Id: I7d5a274ea0a3c8ea13062bf61bf402248dfe1a19 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-06session: support multiple worker bindsFlorin Coras1-4/+13
Allows app workers to listen on the same session endpoint. Incoming connects are spread across the workers in a round-robin fashion Change-Id: Ib5f5817230d9abc6127a85cdbdcad70d980c0f7f Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-08-31VPP-1408: Fix bug that wrong tx fifo drop in buffer chains flow of dgram modeshubing guo1-1/+4
-- Not drop session dgram hdr when to drop processed udp message from tx fifo Change-Id: Id5ce5780817041bca05011f7b9b53e97a6d78da4 Signed-off-by: shubing guo <guo.shubing@zte.com.cn>
2018-08-24session: fix coverity warningsFlorin Coras1-3/+7
Change-Id: I2a25bba675fc9c84e5d391533e92b9a041637405 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-08-24session: add support for multiple app workersFlorin Coras1-17/+29
Refactor session layer to support multiple workers per application. Change-Id: Ie67354688d396449d14bbbb8c56050206e307cd8 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-27vcl: use events for epoll/select/read/writeFlorin Coras1-3/+3
Have vcl poll and wait on the event message queues as opposed to constantly polling the session fifos. This also adds event signaling to cut through sessions. On the downside, because we can't wait on multiple condvars, i.e., when we have multiple message queues because of cut-through registrations, we do timed waits. Change-Id: I29ade95dba449659fe46008bb1af502276a7c5fd Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-23session: send rx events only if session readyFlorin Coras1-0/+6
Change-Id: I8d631121b104fb40c20701d4c1b428f2b71e5785 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-19session: coverity warningsFlorin Coras1-8/+10
Change-Id: I4505954c737e8c6a3d4177c6833f2b12099e6dd4 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-17session: send ctrl msg over mqFlorin Coras1-16/+171
Change-Id: I242056bc46ddb671064665916b2687860292dcb2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-17session: use msg queue for eventsFlorin Coras1-39/+34
Change-Id: I3c58367eec2243fe19b75be78a175c5261863e9e Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-11session: push tx notifications only if neededFlorin Coras1-1/+6
VPP-1340 Change-Id: Ia3f2fc054dbfb2ba912a768c70466e7042024e32 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-06-30tcp: fix single loop prefetchFlorin Coras1-1/+7
Also add single loop prefetch in session tx Change-Id: Ib2725a2552fcc1a65050d7a2eb10491a7b34db62 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-06-30session: send tx notification to appFlorin Coras1-188/+202
Does some session node cleanup as well Change-Id: Ifd52b07b28ba4dec1f6f729476decc76eb963837 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-06-26tcp/session: tx optimizationsFlorin Coras1-1/+0
- cache and reuse tcp options and rcv_wnd for session layer tx bursts - avoid reading/setting total_length_not_including_first_buffer. It's part of a buffer's second cache line so it comes at a "cost". Change-Id: Id18219c2f7e07cf4c63ee74f9cdd9e5918904036 Signed-off-by: Florin Coras <fcoras@cisco.com>