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path: root/src/vnet/tcp/tcp_output.c
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2022-01-12session: pass tx buffers in bulk to transportsFlorin Coras1-4/+33
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I1025cccd784f80b557847f69c3ea1ada5c9de60d
2022-01-10session: deschedule sessions with no data to sendFlorin Coras1-1/+0
This ensures the scheduler always tracks sessions that are descheduled, i.e., do not have events in the old io events list. When app retries to send, clear descheduled flag and potentially the pacer. Consequently, transports no longer need to reset the pacer when sessions are rescheduled after a long app tx pause. This also fixes a tcp bug whereby the pacer was reset too often when snd_una was equal to snd_nxt as there was no way to distinguish betwen app tx breaks and congestion. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Id3cc6c98cd76299e15030e504380dcf3c04c5189
2022-01-06tcp: mark lost first sack hole on timeoutFlorin Coras1-1/+4
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I1abff943f3fe3ff0219126b5b8beded4ad859758
2022-01-06tcp: cast timer ticks to u32Florin Coras1-2/+2
tc->rto * TCP_TO_TIMER_TICK can return garbage if not cast to u32 and that confuses clib_max Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> signed-off-by: Vipul Agrawal <Vipul.Agrawal@enea.com> Change-Id: Ief4d29b9625e2ef2e75e0c7e3d731ab147465f6d
2021-11-08tcp: refactor reset nodeFlorin Coras1-49/+71
Use vectorized buffer translate function and refactor tracing. Type: refactor Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I5a014cea1a753eb10a564ac316c1727a18f884ff
2021-11-06tcp: fix reset with packet ack numberFlorin Coras1-0/+1
Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I35c1fc75df065398821cc275e853a3caa9db94c2
2021-11-06tcp: in place tcp header for buffer resetsFlorin Coras1-2/+2
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I2a5de36175bca1181ffd4a1865d41f0a1f6bc035
2021-11-03tcp: make buffer reset function publicFlorin Coras1-32/+27
Also does a bit of code cleanup. Type: refactor Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ifbff1e03a2e1fdca98925fdd3db7eb230ff24a37
2021-11-02tcp: fix uninitializad valueDamjan Marion1-1/+1
May not be valid error but gcc-11 complains. Type: fix Change-Id: I207b8b4966c5eadd534495e29c873663249a377f Signed-off-by: Damjan Marion <damarion@cisco.com>
2021-10-06tcp: fix severity infoFilip Tehlar1-6/+6
Type: fix Signed-off-by: Filip Tehlar <ftehlar@cisco.com> Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ibe39bc045c3b154209a83b59ef95a37c61b32c0c
2021-09-13tcp session: initialize sw_if_index at connect timeFlorin Coras1-1/+1
Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Id0e67a9ce9c5d8bca2cd7a30493f03a02a46dc46
2021-07-06tcp: use tcp output for half open connectionsFlorin Coras1-39/+12
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I05be39671a9ed0688d4e006f0f9354aa6560a41b
2021-06-29tcp: add ACK flag to RST packetliuyacan1-1/+1
According to RFC 793, the ACK control bit is always sent once the connection is established. Type: fix Signed-off-by: liuyacan <liuyacan@corp.netease.com> Change-Id: Id0fe19114a0cc468dbce4c0938b345c2ac339e73
2021-06-15tcp: prevent timer handler being called frequentlyliuyacan1-6/+12
In the current implement, tcp would start or up an one tick retransmit timer for that connection if vlib_buffer_alloc() return 0. Now the tick is 0.1ms, this means that if VPP is in a buffer shortage state, there would be a large number of burst timer expirations. This commit limits the minimum interval of the retransmission timer to 100ms. Type: fix Signed-off-by: liuyacan <liuyacan@corp.netease.com> Change-Id: Ia11d693fe46119c5dc16b24ca93c30c31109057a
2021-05-01vlib: refactor trajectory trace debug featureBenoît Ganne1-6/+1
trajectory trace has been broken for a while because we used to save the buffer trajectory in a vector pointed to in opaque2. This does not work well when opaque2 is copied (eg. because of a clone) as 2 buffers end up sharing the same vector. This dedicates a full cacheline in the buffer metadata instead when trajectory is compiled in. No dynamic allocation, no sharing, no tears. Type: refactor Change-Id: I6a028ca1b48d38f393a36979e5e452c2dd48ad3f Signed-off-by: Benoît Ganne <bganne@cisco.com>
2021-04-20tcp: req app deq notification on fifo fullFlorin Coras1-1/+4
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
2021-04-05tcp: time infra improvementsFlorin Coras1-3/+3
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I998c0686f9f7dc556dda8b28e23bbed127d0aafc
2021-02-15vlib: refactor checksum offload supportMohsin Kazmi1-1/+1
Type: refactor This patch refactors the offload flags in vlib_buffer_t. There are two main reasons behind this refactoring. First, offload flags are insufficient to represent outer and inner headers offloads. Second, room for these flags in first cacheline of vlib_buffer_t is also limited. This patch introduces a generic offload flag in first cacheline. And detailed offload flags in 2nd cacheline of the structure for performance optimization. Change-Id: Icc363a142fb9208ec7113ab5bbfc8230181f6004 Signed-off-by: Mohsin Kazmi <sykazmi@cisco.com>
2020-11-12tcp: push last buffered sequenceFlorin Coras1-0/+7
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Iba914ac69585e89f174f09e74ae716df1b080c59
2020-10-28misc: Break the big IP header files to improve compile timeNeale Ranns1-0/+2
Type: refactor Signed-off-by: Neale Ranns <neale.ranns@cisco.com> Change-Id: Id1801519638a9b97175847d7ed58824fb83433d6
2020-10-23tcp: remove snd_una_maxFlorin Coras1-7/+3
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I03f923053499f219035c9b7b6640fc575568d474
2020-10-23tcp: remove force retransmit timer updateFlorin Coras1-9/+8
Also simplify condition for detecting unintended timer pops. Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I8b120dfc2d16e40ee865240dbc9667708cd1c808
2020-08-20tcp: track reorder with sacksFlorin Coras1-0/+1
Type: feature Change-Id: I041bff2e8d589c171661de286fa1503531dff891 Signed-off-by: Florin Coras <fcoras@cisco.com>
2020-07-23tcp: track pending timersFlorin Coras1-11/+0
Also removes delack timer and reuses the u32 for the pending timers list. Type: fix Ticket: VPP-1923 Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I4edbb72d5b2aa5e14f87659f49e675af1e834aca
2020-07-07tcp: round down rcv wnd even if avoiding retractionFlorin Coras1-13/+9
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I7fb3a4a2ffc4c5f42aa043e3a317b52d7767fb81
2020-06-30tcp: avoid rcv wnd more than RX fifo can enqueueRyujiro Shibuya1-7/+6
Type: fix Signed-off-by: Ryujiro Shibuya <ryujiro.shibuya@owmobility.com> Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ie358b731f8ecb1fcaebd6e79f5ce5c10802c2814
2020-05-24tcp: track buffer alloc failuresFlorin Coras1-3/+20
Reported as part of "show tcp stats" Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I499ab4e41d13aaf1a0d060e37f09087e63d09567
2020-05-12tcp: avoid rcv wnd less than mssFlorin Coras1-6/+4
Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I84ec1c91a3a7b2195aad58923fa6f17f551444cb
2020-04-09tcp: avoid regrabing error node in input and outputFlorin Coras1-13/+8
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I2dd0187d069783ac8bc445a70f99934d91ae0e63
2020-04-04session tls: support tls deschedulingFlorin Coras1-6/+5
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ieb8bb9c6deb92479fdd3e045778fe5ae4782d1ea
2020-04-03session: improve error reportingFlorin Coras1-1/+1
Type: improvement Change-Id: I9dd850a1ce85b0adb5136233f176117e0ee38817 Signed-off-by: Florin Coras <fcoras@cisco.com>
2020-04-02tcp: explicit use of timer wheel in timer apisFlorin Coras1-23/+21
Type: refactor Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I06120d43c15b2fa3f437ef235bf5f83ec2beb45e
2020-04-02tcp: move features to separate filesFlorin Coras1-86/+3
Type: refactor Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ia477b8dba9266f47907967e363c11048e5cd95ab
2020-03-30tcp: reuse session infra for syns and resetsFlorin Coras1-43/+11
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I71df27049ef0193578f0c42f8f8bbd5c54e4d53e
2020-03-25tcp: avoid updating rcv wnd in resetsFlorin Coras1-3/+1
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I0884bf63db57b4b4dbccf41ab64c030b3fe4dde2
2020-03-19tcp: force deschedule if no send space availableFlorin Coras1-1/+3
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Iae9f118f710153b6c0e390265039db7434e67ed8
2020-03-19session tcp udp: consolidate transport snd apisFlorin Coras1-2/+8
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
2020-03-19tcp: count dupacks with no sacksFlorin Coras1-0/+1
Type: fix Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ia2e29b4776c0f8df666da39a14c5ef2fa1693c21
2020-02-25tcp: handle cleanups without timersFlorin Coras1-2/+2
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ida896e9fbe83b4c76578b089bb3fd2bef5e07fd2
2020-02-18tcp: pace timer handlingFlorin Coras1-49/+10
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I93067054631d6ae2411a7b08d7b681aed7a121b2
2020-02-14tcp: improve reset generation in reset nodeFlorin Coras1-52/+40
Type: improvement Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I7a4a4a52c3e4ad47aabb2ef5f53a0e0bb7e71690
2020-02-14tcp: minimal set of worker statsFlorin Coras1-0/+4
Type: feature Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: I9dafe564229095d50285276a654f4983f93faff2
2020-01-28session tcp: fix packet tracingFlorin Coras1-6/+7
Type: fix Change-Id: Ib823d016c64998779fb1d00b8aad3acb5e8340be Signed-off-by: Florin Coras <fcoras@cisco.com>
2020-01-09tcp: fix persist assertFlorin Coras1-4/+1
Type: fix Persist and retransmit can pop at the same time. Signed-off-by: Florin Coras <fcoras@cisco.com> Change-Id: Ia9530645cc84c83a881a75d7b4627197dc50ed29
2019-12-06tcp: fix tail rescue with sacksFlorin Coras1-5/+7
Type: fix Change-Id: Iad73f47cef3d29c4b0b7d1f58f2f2b14ba4b1d38 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-11-25tcp: invalidate expired timer handles before dispatchingFlorin Coras1-16/+4
Type: fix Change-Id: Icc8cd05cb9c1844a9f8b0399797ad554f4ccf1a1 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-11-21tcp: add no csum offload config optionFlorin Coras1-25/+11
Type: feature Change-Id: I77b3ee74229f3c85e99f74bf9000cb5aedbc1760 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-11-20session tcp: support pacer idle timeoutsFlorin Coras1-20/+5
Type: feature To avoid excessive bursts, pacer must be provided with an estimated rtt for the connection. That's used to compute an idle timeout, i.e., time after which the bucket is reset to 1 mtu due to inactivity. For now, idle timeout is computed as 5% of the rtt. Change-Id: Ia0b752fe7b4ad0ce97b477fb886b0133a2321541 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-11-16tcp: close session on retransmit failureFlorin Coras1-0/+1
Type: fix Since the connection is closed, also mark the session as closed. Change-Id: Ica3849c3ff12fa7a65ba64e563a60d6c94f5ceca Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-11-11tcp: improve lost rxt heuristicFlorin Coras1-0/+5
Type: feature - retransmit first unacked segment if newer retransmitted packets are acked - avoid spurious retransmits if recovery ends with sacked bytes Change-Id: Ic1b56d22e025822edb7609afb136e47440ea6032 Signed-off-by: Florin Coras <fcoras@cisco.com>