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2019-02-21tcp: drop outstanding data when entering closing stateFlorin Coras1-1/+1
Change-Id: I92a009b9630b0d882ea3c5c99aad88ed6f5109a0 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-18session: move fifo allocation logic to app workerFlorin Coras1-136/+58
Change-Id: I1662ec4b5503cb64a8a86a2441842311d959b3a6 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-18tcp: harden for high scale scenariosFlorin Coras1-0/+7
- Better handle buffer starvation scenarios - Handle case when both peers enter recovery due to packet loss. - Fix passive open establish cleanup Change-Id: I2f28baa2ff0383bb8f5f6d2452b49aa38ce69bce Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-11session: add config for evt qs segment sizeFlorin Coras1-2/+5
Change-Id: I286d0d53a9ef2d6e28cd301eae25fc119d491f22 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-09session: refactor listen logicFlorin Coras1-3/+3
Make app-listener the handle for app listens. Consequently transport and local listen sessions are now associated to the app-listener. Change-Id: I9397a26d42cccb100970b6b4794c15bac2e11465 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-06transport: cleanupFlorin Coras1-27/+20
- 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 Coras1-33/+8
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 Coras1-83/+80
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>
2019-01-17vcl/session: replicate events for shared sessionsFlorin Coras1-8/+46
Change-Id: I7fb5402d4a530b5f2ffd9bb5787632099f4b4189 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-10session/vcl: improve fifo tx notificationsFlorin Coras1-1/+5
Change-Id: Ied476c417c8ba5b4d7c615125c36eecd9ca64fbc Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-02Fixes for buliding for 32bit targets:David Johnson1-2/+7
* 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>
2019-01-01vcl/ldp: add write msg function and fine tuningFlorin Coras1-4/+17
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 Coras1-53/+67
In addition to that, a bit of refactoring. Change-Id: Iea1eabc2167bcdef185ec53bc09bae087c5398e6 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-22tcp: improve waitclose in closing statesFlorin Coras1-0/+18
Change-Id: I90056176194cb2a144d49a3cb283653d8d30f051 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-21http server: improvementsFlorin Coras1-0/+1
- use http sessions to track communication with peer (as opposed to using the raw sessions) - for static server send ok message prior to sending data - static server can now handle GET requests spread over multiple packets. Good for testing http/tcp implementation. Change-Id: I767a790de9a42e7087db5ce8eefd8efaf598c695 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-21tcp: fix fin_wait_1 condition to send finFlorin Coras1-1/+13
Also add the closed-waiting session state wherein the session still allows the transport to send oustanding data. Change-Id: Ic47807379906ef2010934381ff0b9e53c7e631d8 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-19session: handle close before app accept replyFlorin Coras1-2/+1
Change-Id: Ic35bbf55851087d70bfacc1eab4dea4285f98c86 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-18tcp/session: drop connections if message queue is fullFlorin Coras1-6/+9
Also cleanup session table when transport closes and app didn't reply to the close notification. Change-Id: Ie3d518e3afff73437561561b46dbf695c24632ad Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-17vcl/session: handle reset/disconnect before app acceptFlorin Coras1-2/+4
Also further improves reset handling. Change-Id: I6e517632f700f181761726b965134e0c217eb06d Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-05session/tcp: postpone cleanup on resetFlorin Coras1-1/+1
Change-Id: I45fd7538853f84c6c8bf804cc20acbc9601db3ba Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-05tcp: send unsent data in fast recoveryFlorin Coras1-1/+1
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 Coras1-0/+1
Also reset pacer on tcp retransmit timeout Change-Id: I5a9edee4c00d1d169248d79587a9b10437c2bd87 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-31session: prioritize postponed sessionsFlorin Coras1-4/+6
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 Coras1-57/+42
Change-Id: I66ca0ddea872948507d078e405eb90f9f3a0e897 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-28session: extend connect api for internal appsFlorin Coras1-7/+9
Change-Id: Ie4c5cfc4c97acb321a46b4df589dc44de1b616ba Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-25tcp/session: add tx pacerFlorin Coras1-1/+6
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 Barach1-3/+3
Change-Id: Ied34720ca5a6e6e717eea4e86003e854031b6eab Signed-off-by: Dave Barach <dave@barachs.net>
2018-10-18tls: fix connection failures/interrupts at scale (VPP-1464)Florin Coras1-2/+6
Change-Id: I0bc4062c1fd3202ee201acb36a2bb14fc6ee1543 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-18tcp: fix cleanup of non established connections (VPP-1463)Florin Coras1-0/+1
- fix delete of connection in syn-received - fix delete of half-open connection Change-Id: I72ff4b60406a2762d998328c52f41adea40d2c1b Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-16tls: fix multi threaded medium scale test (VPP-1457)Florin Coras1-4/+4
- ensure session enqueue epoch does not wrap between two enqueues - use 3 states for echo clients app, to distinguish between starting and closing phases - force tcp fin retransmit if out of buffers while sending a fin Change-Id: I6f2cab46affd1148aba2a33fb6d58bcc54f32805 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-03session: fix first segment manager cleanupFlorin Coras1-0/+2
Change-Id: I750db7617ff9fd36647743094e0fa855e7dada86 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-10-02tls: fix disconnects for sessions with pending dataFlorin Coras1-2/+3
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>
2018-09-19session: improve close procedureFlorin Coras1-15/+42
Change-Id: I6201a044e70ab6a58db8212960c57edc77c41f96 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-14vcl: keep track of unexpected eventsFlorin Coras1-2/+2
If sessions are marked as blocking, events for other sessions received while waiting for the blocking sessions, are added to a pending list and processed later. Change-Id: Ia6c71006b1c2bcb78af708390da0cd436af397cc Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-10session: lock app worker mq for io eventsFlorin Coras1-15/+6
Also fixes vcl client/server stats and closing procedure. Change-Id: I7d5a274ea0a3c8ea13062bf61bf402248dfe1a19 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-07session: fix reentrant listensFlorin Coras1-3/+5
Change-Id: I72d400401a308012b43513179870823f6f921e44 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-09-06session: support multiple worker bindsFlorin Coras1-92/+24
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>
2018-08-24session: add support for multiple app workersFlorin Coras1-39/+53
Refactor session layer to support multiple workers per application. Change-Id: Ie67354688d396449d14bbbb8c56050206e307cd8 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-08-24tcp: fix cc recovery re-entry and persist timer popFlorin Coras1-2/+2
Change-Id: I89e8052f2d2c36dd3de5255c4ee570722dc58227 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-08-10vcl: support for eventfd mq signalingFlorin Coras1-0/+5
- support eventfd based mq signaling. Based on configuration, vcl epoll/select can use either condvars or epoll on mq eventfds. - add vcl support for memfd segments - vpp explicitly registers cut-through segments with apps/vcl - if using eventfd, make ldp allow one call to libc_epoll_create. Needed for the message queue epfd - update svm_queue_t to allow blocking calls with eventfd signaling. Change-Id: I064151ac370bbe29bb16c968bf4e3659c8286bea Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-27vcl: use events for epoll/select/read/writeFlorin Coras1-2/+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>
2018-07-17session: send ctrl msg over mqFlorin Coras1-6/+5
Change-Id: I242056bc46ddb671064665916b2687860292dcb2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-17session: use msg queue for eventsFlorin Coras1-90/+102
Change-Id: I3c58367eec2243fe19b75be78a175c5261863e9e Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-08session/svm: fix coverity warningsFlorin Coras1-1/+5
Change-Id: Ic5daed1f6c23d9561a04e235dcbf257f190d066a Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-07-03tcp: update snd_una_max for retranmsitsFlorin Coras1-3/+4
Change-Id: I0573d0aff39581bba96e610228a10ae923a8ca06 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-06-30session: send tx notification to appFlorin Coras1-0/+26
Does some session node cleanup as well Change-Id: Ifd52b07b28ba4dec1f6f729476decc76eb963837 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-06-11tcp: cleanup connection/session fixesFlorin Coras1-17/+29
- Cleanup session state after last ack and avoid using a cleanup timer. - Change session cleanup to free the session as opposed to waiting for delete notify. - When in close-wait, postpone sending the fin on close until all outstanding data has been sent. - Don't flush rx fifo unless in closed state Change-Id: Ic2a4f0d5568b65c83f4b55b6c469a7b24b947f39 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-06-11udp: fix for multiple workers and add testFlorin Coras1-1/+2
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>
2018-06-01session: improve disconnect handlingFlorin Coras1-7/+25
If the caller is the session owning thread or the main thread with a worker barrier sync (cli/api) add an event to the pending disconnects vector in the session node and entirely avoid using the event queue. Useful for bursts of disconnects (like an app detach). If disconnects come from a processes, be willing to retry enqueueing the disconnect to the event queue multiple times. Change-Id: Ieece1f1091b713f94c41c703b6e805bc8498816a Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-05-26tcp: loss recovery improvements/fixesFlorin Coras1-1/+1
- fix newreno cwnd computation - reset snd_una_max on entering recovery - accept acks beyond snd_nxt but less than snd_congestion when in recovery - avoid entering fast recovery multiple times when using sacks - avoid as much as possible sending small segments when doing fast retransmit - more event logging Change-Id: I19dd151d7704e39d4eae06de3a26f5e124875366 Signed-off-by: Florin Coras <fcoras@cisco.com>