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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>
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Change-Id: I4e836244409c98739a13092ee252542a2c5fe259
Signed-off-by: Damjan Marion <damarion@cisco.com>
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Example:
buffers {
default data-size 1536
}
Change-Id: I5b4436850ca18025c9fdcfc7ed648c2c2732d660
Signed-off-by: Damjan Marion <damarion@cisco.com>
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- 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>
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Move app worker logic to app_worker.c
Change-Id: Ic5e5735b2884f006c064d023f491aa6888114810
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Change-Id: I71ccb39c56962fe0160d3f4c83453e72d2dd3030
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I2ad54b20b96f10b009c3e651b2a2f885577ca5b6
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Ied476c417c8ba5b4d7c615125c36eecd9ca64fbc
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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* 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>
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Change-Id: If2bbfbc52994f5de0879763e0b7a7864498debb6
Signed-off-by: Damjan Marion <damarion@cisco.com>
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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>
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In addition to that, a bit of refactoring.
Change-Id: Iea1eabc2167bcdef185ec53bc09bae087c5398e6
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Change-Id: Ic35bbf55851087d70bfacc1eab4dea4285f98c86
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Also further improves reset handling.
Change-Id: I6e517632f700f181761726b965134e0c217eb06d
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Change-Id: I45fd7538853f84c6c8bf804cc20acbc9601db3ba
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Id4f37f5d4a03160572954a416efa1ef9b3d79ad1
Signed-off-by: Dave Barach <dave@barachs.net>
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- 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>
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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>
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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>
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Also reset pacer on tcp retransmit timeout
Change-Id: I5a9edee4c00d1d169248d79587a9b10437c2bd87
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Force pacing for fast retransmit to avoid bursts of retransmitted
packets.
Change-Id: I2ff42c328899b36322c4de557b1f7d853dba8fe2
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Change-Id: I66ca0ddea872948507d078e405eb90f9f3a0e897
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Change-Id: Ied34720ca5a6e6e717eea4e86003e854031b6eab
Signed-off-by: Dave Barach <dave@barachs.net>
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Change-Id: I0d42a0c71fea7dd669fb1fe5ded7e6e944245c7d
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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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>
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Also fixes vcl client/server stats and closing procedure.
Change-Id: I7d5a274ea0a3c8ea13062bf61bf402248dfe1a19
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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-- 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>
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Change-Id: I2a25bba675fc9c84e5d391533e92b9a041637405
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Refactor session layer to support multiple workers per application.
Change-Id: Ie67354688d396449d14bbbb8c56050206e307cd8
Signed-off-by: Florin Coras <fcoras@cisco.com>
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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>
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Change-Id: I8d631121b104fb40c20701d4c1b428f2b71e5785
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I4505954c737e8c6a3d4177c6833f2b12099e6dd4
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I242056bc46ddb671064665916b2687860292dcb2
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I3c58367eec2243fe19b75be78a175c5261863e9e
Signed-off-by: Florin Coras <fcoras@cisco.com>
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VPP-1340
Change-Id: Ia3f2fc054dbfb2ba912a768c70466e7042024e32
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Also add single loop prefetch in session tx
Change-Id: Ib2725a2552fcc1a65050d7a2eb10491a7b34db62
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Does some session node cleanup as well
Change-Id: Ifd52b07b28ba4dec1f6f729476decc76eb963837
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- 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>
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Change-Id: I4a7e4f616ed4a4df82be3112ac4702f7e4e2025c
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Idf17a0633a1618b12c22b1119e40c2e9d3192df9
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- 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>
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Change-Id: Ib8e332174d96bf9cfa4bbaaa5b8d8bc9958424b1
Signed-off-by: Florin Coras <fcoras@cisco.com>
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