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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
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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>
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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
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I998c0686f9f7dc556dda8b28e23bbed127d0aafc
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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>
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Iba914ac69585e89f174f09e74ae716df1b080c59
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Type: refactor
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>
Change-Id: Id1801519638a9b97175847d7ed58824fb83433d6
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I03f923053499f219035c9b7b6640fc575568d474
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Also simplify condition for detecting unintended timer pops.
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I8b120dfc2d16e40ee865240dbc9667708cd1c808
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Type: feature
Change-Id: I041bff2e8d589c171661de286fa1503531dff891
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I7fb3a4a2ffc4c5f42aa043e3a317b52d7767fb81
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Type: fix
Signed-off-by: Ryujiro Shibuya <ryujiro.shibuya@owmobility.com>
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ie358b731f8ecb1fcaebd6e79f5ce5c10802c2814
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Reported as part of "show tcp stats"
Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I499ab4e41d13aaf1a0d060e37f09087e63d09567
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Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I84ec1c91a3a7b2195aad58923fa6f17f551444cb
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I2dd0187d069783ac8bc445a70f99934d91ae0e63
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ieb8bb9c6deb92479fdd3e045778fe5ae4782d1ea
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Type: improvement
Change-Id: I9dd850a1ce85b0adb5136233f176117e0ee38817
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: refactor
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I06120d43c15b2fa3f437ef235bf5f83ec2beb45e
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Type: refactor
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ia477b8dba9266f47907967e363c11048e5cd95ab
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I71df27049ef0193578f0c42f8f8bbd5c54e4d53e
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I0884bf63db57b4b4dbccf41ab64c030b3fe4dde2
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Iae9f118f710153b6c0e390265039db7434e67ed8
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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
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Type: fix
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ia2e29b4776c0f8df666da39a14c5ef2fa1693c21
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ida896e9fbe83b4c76578b089bb3fd2bef5e07fd2
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I93067054631d6ae2411a7b08d7b681aed7a121b2
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Type: improvement
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I7a4a4a52c3e4ad47aabb2ef5f53a0e0bb7e71690
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Type: feature
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I9dafe564229095d50285276a654f4983f93faff2
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Type: fix
Change-Id: Ib823d016c64998779fb1d00b8aad3acb5e8340be
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: fix
Persist and retransmit can pop at the same time.
Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ia9530645cc84c83a881a75d7b4627197dc50ed29
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Type: fix
Change-Id: Iad73f47cef3d29c4b0b7d1f58f2f2b14ba4b1d38
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: fix
Change-Id: Icc8cd05cb9c1844a9f8b0399797ad554f4ccf1a1
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: feature
Change-Id: I77b3ee74229f3c85e99f74bf9000cb5aedbc1760
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Type: fix
Since the connection is closed, also mark the session as closed.
Change-Id: Ica3849c3ff12fa7a65ba64e563a60d6c94f5ceca
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Type: fix
Change-Id: Ib6a8f5ca597389700e5746f089a5cec7eee65ab5
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: fix
Change-Id: I6f7df0d358f57f7feadb9b7a3fcffb99558b2af8
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type:feature
For cases when proxy is in use IPv6 flow label received in origin pkt needs to be added
to ipv6 header of outgoing pkts from proxy to original destination and vice versa.
Signed-off-by: Tarun Gupta <tarungup@cisco.com>
Change-Id: I143f7e67237c0f865333078628a016b50ad5e630
Signed-off-by: Tarun Gupta <tarungup@cisco.com>
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Type: refactor
Change-Id: Ic1c3e1f7987702cd88972acc34849dc1f585d5fe
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: fix
- Initialize max_seq on both transmitted and retransmitted segments
- Keep track of segments that have been sacked.
- Track new data segments sent during recovery
Change-Id: Ice55231a3da200ae6171702e54b2ce155f831143
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: fix
Ensure that sack retransmit logic does not try to inadvertently send new
data.
Change-Id: Idfda19643577d9c1b58e2af8d8283cabfbaf98e6
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Type: fix
Change-Id: I02e2cb2d349f9ddb2bfed040a08ca448f379d565
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: fix
Change-Id: I6164ad0d97cd91b60c85302eff691836d12a0a70
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: refactor
Change-Id: Ib5e2ecf55732599e1322736e3662178c9da49c7d
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Rest pacer on ack reception if we haven't recently sent anything.
Type: feature
Change-Id: I820bacd81b65130052dfafbfcbe6ca4553069fbc
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Add heuristic that detects lost retransmitted segments and retries
sending them.
Type: feature
Change-Id: I34d1bb16799e1993779222eb2bfad4b40704159e
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Type: feature
Based on the configuration, we can disable checksum offload capability
and calculate checksum while pushing the TCP & IP header.
This saves some cycles when VPP stack is used in legacy hardware devices.
Signed-off-by: Srikanth A <srakula@cisco.com>
Change-Id: Ic1b3fcf3040917e47ee65263694ebf7437ac5668
(cherry picked from commit 3642782a2748503f5b5ccf89d1575c1d489948ef)
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