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2022-04-01session: leverage new pool functions in safe reallocFlorin Coras1-32/+48
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I2c264c31d2470b11b94d68411fa8266387319146
2022-03-31vlib: add support for workers syncFlorin Coras1-38/+2
Adds api that allows workers to synchronize through main thread. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I1e75e2fb5144d397d19b13c4dfc7e937f11c044c
2022-03-26session: simplify safe pool reallocFlorin Coras1-62/+42
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I1c55c054fea6c6886d8287a9b6e264a308f89504
2022-03-22session: use safe realloc for poolsFlorin Coras1-50/+7
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I313c916d268c4b2b448b93e90bc67da341b803e3
2022-03-21session: linked list of events to be handled by mainFlorin Coras1-0/+4
Minimize amount of rpcs from first worker to main Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I3794ff028a17d18b7bff69ede2b62e1e2d45ae77
2022-03-18session: add infra for safe pool reallocsFlorin Coras1-0/+147
This is not to be used lightly. The idea is to forces pool reallocs to be done only on main thread with a barrier to make sure pools are always reallocated without peekers/readers. If rpcs are delayed and the pool runs out of elements, workers will block waiting for barrier and force the realloc. Consumers of this api should be session layer and transports. Type: feature Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I533272a29534338935a3fcf7027c0e7af2ca948c
2022-02-10session: avoid debug half-open session pool contentionFlorin Coras1-0/+11
Half-opens are only allocated from main with worker barrier but can be cleaned up, i.e., session_half_open_free, from main without a barrier. In debug images, the free_bitmap can grow while workers peek the sessions pool, e.g., session_half_open_migrate_notify, and as a result crash while validating the session. To avoid, proactively grow bitmap in debug images. Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I2410793f933fb638651fe8dc08ba78e9bee0bd77
2022-01-22session: update time for list of subscribersFlorin Coras1-0/+6
Instead of constantly scanning all transport vfts for update time functions, build list at transport enable time. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Id5c07cc03ee1fdd072ebbbd40119d1a440a5e3b1
2022-01-12session: pass tx buffers in bulk to transportsFlorin Coras1-0/+1
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I1025cccd784f80b557847f69c3ea1ada5c9de60d
2021-11-18session: deprecate mq segments basevaFlorin Coras1-2/+0
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I5b6cb8dd9db7e003a470ca4aeb8472fa7cb9a128
2021-11-18session: improve wrk mq segment allocationFlorin Coras1-4/+4
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I9e5438a2f82762aa8a88bbacf4290151ef30969e
2021-07-12session: api cleanupFilip Tehlar1-0/+1
Use autogenerated code. Does not change API definitions. Type: improvement Signed-off-by: Filip Tehlar <ftehlar@cisco.com> Change-Id: Iacc58d27ac51c8a1c571087f98297e046b3477c2
2021-05-21session: improve main thread connects rpcFlorin Coras1-1/+1
Avoid grabbing the worker barrier if there's no work to be done. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ice3de5df41cd1752aba3419ad2e2dd82f30e9bfb
2021-05-19session: cleanup event llist usageFlorin Coras1-22/+8
Type: refactor Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I750c856ac81d951e8c0e62c710e0f35a0c80d6f9
2021-05-18tls: fix dtls with no workersFlorin Coras1-0/+9
Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Iecc33fda7f28c037289775ffe0525a50f89a2b8c
2021-05-18session: poll main thread if pending connectsFlorin Coras1-0/+3
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ie8a15c50531f3ccd5f91dbc0779e4d9c0d146844
2021-05-18session: move tx-buffers to tx ctxFlorin Coras1-3/+3
Type: refactor Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I10ec410fb7f3acb47128dda23510162dc13b20d0
2021-05-16session: rpc for connects to mainFlorin Coras1-0/+6
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ifa47e1500e5cfb3c717f87b1d21131b9531c9005
2021-05-14tls: switch dtls to vc and track half-opensFlorin Coras1-0/+2
Also adds support for half-open support transport migration. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Id04c194138956336f93246bbed0332a7030c67e2
2021-05-12tls: switch to vc service and track half-open sessionsFlorin Coras1-0/+1
Half-open tls sessions are now tracked by the app worker and are cleaned up only when tcp cleans up its half-open session, i.e., independent of when the established tls context is allocated. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: If5d594d7095192dd527daf4ea1358ffeccdfcc7a
2021-05-12session: return connect session handle to appFlorin Coras1-1/+1
App transports not supported for now. Will have to be updated individually. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I75cb6c4e1c5af008af72858a9ee573016812abd4
2021-05-12session: support half-close connectionliuyacan1-0/+2
Some app(e.g. Envoy) may call shutdown() instead of close() when draining connection. Type: improvement Signed-off-by: liuyacan <liuyacan@corp.netease.com> Change-Id: I9543b9ca3caa87b10b134fd1fc4019124e41e4d2
2021-05-10session: use half-open sessions for vc establishmentFlorin Coras1-4/+26
Use half-open sessions to track virtual circuit connection establishment. These sesssions can only be allocated and freed by the thread that allocates half-open connections (main). Consequently, they can only be freed on half-open cleanup notifications from transports. Goal is to simplify state tracking within the session layer but it's also a first step towards allowing builtin apps to track and cleanup outstanding connects. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I8a535906d13eb7f8966deb82333839de80f8049f
2021-04-20tcp: req app deq notification on fifo fullFlorin Coras1-0/+7
If fifo full, default to requesting an app deq notification and forcing an ack (window update) if zero rcv window sent is still active. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Iade7e1722503da149c62c465c472edbb0a5599f7
2021-04-14session tcp vcl: api to update connection attributesFlorin Coras1-0/+2
Type: feature Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ifdd6024daf044751895bb8d2deabad41d3a80c92
2021-04-07session: fix coverity warningFlorin Coras1-1/+1
Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Id2c06f49bcae1a26a2d16d58f9da7a4d3175bf3c
2021-04-06session: basic support for interrupt modeFlorin Coras1-0/+30
Experimental support for session layer interrupt mode. When enabled (use-private-rx-mqs must be set) session queue node switches to interrupt state when lightly loaded, i.e., no events and less than 1 vector/dispatch. Because transport protocols require a periodic time update, when in interrupt state the session queue node workers register a timerfd with the unix-epoll-input node that when triggered signals, i.e., wakes up, the queue node. Under light load, the timer is set to trigger every 1ms whereas if no session is allocated, the worker moves to idle state and the timeout is set to 100ms. Type: feature Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I905b00777fbc025faf9c4074fce4c516cd139387
2021-04-05tcp: time infra improvementsFlorin Coras1-0/+7
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I998c0686f9f7dc556dda8b28e23bbed127d0aafc
2021-03-29svm session vcl: per app rx message queuesFlorin Coras1-0/+5
Add option to use per app private segments for app to vpp message queues, as opposed to exposing internal message queues segment. When so configured, internal message queues are still polled by the session queue node but external app message queues are handled by a new input node (appsl-rx-mqs-input) that runs in interrupt state. Signaling of the node, when mqs receive new messages, is done through eventfds epolled by worker epoll input nodes. Type: feature Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Iffe8ce5a9944a56a14e6d0f492a850cb9e392d16
2020-12-28session: convert evt q segment to fifo segmentFlorin Coras1-3/+3
Type: refactor Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I63a44e11322f6fe27255820524e022f6d710b083
2020-12-01session: make pacer worker load awareFlorin Coras1-0/+6
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I71b9d54311fcad808fcdaad0df2dca8c161d580e
2020-11-25session: add startup option to poll in mainFlorin Coras1-0/+3
Type: improvement Needed to support multi-worker tests Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I68d5590cece24a744513dc6c324dfb2861a38a94
2020-11-09session: remove support for shm bapi attachmentFlorin Coras1-2/+1
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I21bda0c46406aff54ad8fe5e44491e8e332de170
2020-10-26session: fix feature disableFlorin Coras1-0/+4
Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I69e912ddf64d8ec89f8d93e02a201781b99de0bd
2020-04-17session tcp: track half open in app wrkFlorin Coras1-0/+4
Type: improvement Do extra checks when establishing an active connect and cleanup pending connects if application detaches. Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ibe9349db57b313ba2aa5ea3960ef5cf755f5098a
2020-04-08udp: cleanup input nodeFlorin Coras1-0/+2
Type: refactor Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ida9daefc20a161b36d6f36c56267123c7f2efc01
2020-04-08session: alloc exact number of bufs for multi-seg deqsSimon Zhang1-0/+1
Type: refactor Signed-off-by: Simon Zhang <yuwei1.zhang@intel.com> Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I11cf806e22158e021a9a405eb4487a9ed6fdbccf
2020-04-03session: improve error reportingFlorin Coras1-5/+3
Type: improvement Change-Id: I9dd850a1ce85b0adb5136233f176117e0ee38817 Signed-off-by: Florin Coras <fcoras@cisco.com>
2020-03-30tcp: reuse session infra for syns and resetsFlorin Coras1-5/+16
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I71df27049ef0193578f0c42f8f8bbd5c54e4d53e
2020-03-30session udp: flag for connected udpFlorin Coras1-0/+1
Type: improvement This can be used as alternative to udpc Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ic3f7efe6728b25d4a8a0b61ddb36de66b4672c4f
2020-03-25session: api to add new transport typesFlorin Coras1-1/+19
Type: feature Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: If4dee6dba1ea942daa921d566b35cdecdda680ee
2020-03-20session: export session_alloc_for_connectionAndreas Schultz1-0/+2
Type: refactor Signed-off-by: Andreas Schultz <andreas.schultz@travelping.com> Change-Id: I45c6f434065ab0ad8ada3184b5a875a32a1b3faa
2020-03-19session tcp udp: consolidate transport snd apisFlorin Coras1-3/+2
Type: improvement Use only one api to retrieve transport send parameters. Additionally, allow transports to request postponing and descheduling of events. With this, tcp now requests descheduling of sessions when the connections are stuck probing for zero snd_wnd Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I722c974f3e68fa15424c519a1fffacda43af050c
2020-02-25svm: refactor fifoFlorin Coras1-2/+2
Type: refactor Switch from a wrapped byte space to a "continuous" one wherein fifo chunks are appended to the fifo as more data is enqueued and chunks are removed as data is dequeued. The fifo is still subject to a maximum size, i.e., maximum number of bytes that can be enqueued, so the max number of chunks associated to the fifo is also constrained. When enqueueing data, which must fit within the available free space, if not enough "supporting" chunk memory is available, the fifo asks the fifo segment for enough chunk memory to ensure that the write can succeed. To avoid allocating large amounts of small chunks due to small writes, if possible, the size of the chunks requested is lower capped by min_alloc. When dequeuing data, all the chunks that have been completely drained, i.e., head moved beyond the chunks’ end bytes, are unlinked from the fifo and returned to the fifo segment. The one exception to this is the last chunk which is never unlinked. Change-Id: I98c1dbd9135fb79650365c7e40c29238b96cd4ee Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-12-05session: fix session_main_get_worker_if_validNathan Skrzypczak1-1/+1
Type: fix Change-Id: Ie024792015f3c9c52102c9be03da63c79f3456af Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2019-11-18session: extra checks in session validationSrikanth Akula1-13/+1
Type: fix Adding few extra checks while doign session validationwq! Signed-off-by: Srikanth Akula <srakula@cisco.com> Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I4d18b5ad97d1802ce38a07aeb56b5f35939c1187
2019-11-12session: session enable in multiworkerNathan Skrzypczak1-0/+2
Having session enable in config file wasn't working for multiple workers Type: fix Change-Id: Ib29ba540a6e1d714e7e470f4c7518e3d266fe7ca Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2019-11-05session tcp: refactor pacer timeFlorin Coras1-3/+12
Type: refactor Change-Id: Ic1c3e1f7987702cd88972acc34849dc1f585d5fe Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-11-02session: reschedule asap when snd space constrainedFlorin Coras1-0/+8
Type: feature Improves fairness for sessions that are snd space or pacer constrained. Change-Id: Ida5f523090f1dcbfb17bf5116bc7917747ac8593 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-10-17session tcp: infra for transports to send buffersFlorin Coras1-0/+15
Type: feature Add infra that allows transpors to enqueue pending buffers without the need to build and manage their own pending frames. An important benefit is the fact that buffer wire/tx ordering is ensured by session layer. Change-Id: I764fd1693d610b321a1d0c84b648a314f14583db Signed-off-by: Florin Coras <fcoras@cisco.com>