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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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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>
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- 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>
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Add a session process node that handles main thread tx and retransmit in
order to avoid having a polling input node.
Change-Id: I3357e987c023a84b533b32793e37ab4204420f64
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I1f7877af61f3726cfb7b93ce7893f6df23e866a6
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- rework the function to declutter and avoid building more than one tx
frame
- add dual loop although benefits in my tests seem to be minimal
- improve tcp/udp echo external apps. They have slightly better
throughput than internal echo apps.
- udp bugfixes
Change-Id: Iea4a245b1b1bb407a7f403dedcce2664a49f774b
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- adds session layer support for datagram based protocols
- updates udp to work in pure connectionless and datagram mode. The
existing connected mode is now 'accessible' for apps as a dummy UDPC,
as in, connected udp, protocol.
- updates udp_echo, echo client, echo server code to work in datagram
mode.
Change-Id: I2960c0d2d246cb166005f545794ec31fe0d546dd
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Idef3c665580c13d72e99f43d16b8b13cc6ab746f
Signed-off-by: Florin Coras <fcoras@cisco.com>
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It consists of two main parts. First, add an application transport type
whereby applications can offer transport to other applications. For
instance, a tls app can offer transport services to other applications.
And second, a tls transport app that leverages the mbedtls library for
tls protocol implementation.
Change-Id: I616996c6e6539a9e2368fab8a1ac874d7c5d9838
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: If421bad17b6cfe8e321257c93bb38931e37d7b64
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- separate client/server code for both memory and socket apis
- separate memory api code from generic vlib api code
- move unix_shared_memory_fifo to svm and rename to svm_fifo_t
- overall declutter
Change-Id: I90cdd98ff74d0787d58825b914b0f1eafcfa4dc2
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- compute session type out of transport and network protos
- make session, session lookup and session queue code network protocol
agnostic
This does not update the session layer to support non-ip network layer
protocols
Change-Id: Ifc2f92845e158b649d59462eb7d51c12af536691
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I67a73e31bda9e497859297fcc1765e880572884a
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Shut off (especially) worker-thread session queue input nodes.
Otherwise, vpp can crash when the main thread unmaps the API segment.
Change-Id: Idf855e7570e0066cc921ae34bc53afabaa9e1dba
Signed-off-by: Dave Barach <dave@barachs.net>
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- add debugging scaffolding for simulating buffer shortage
Change-Id: Ice519d74f9c4e4094c4586c548185135b7bb5f2d
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Ic32a76e5f7c48fd52f2e93ee18ba23fb6ad1b855
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I193832a0cd0557fffc034a1223f67fa64a4d45ae
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I44d5c9df7c49b8d4d5677c6d319033b2da3e6b80
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Applications are now provided the option to select the namespace they
are to be attached to and the scope of their attachement. Application
namespaces are meant to:
1) constrain the scope of communication through the network by
association with source interfaces and/or fib tables that provide the
source ips to be used and limit the scope of routing
2) provide a namespace local scope to session layer communication, as
opposed to the global scope provided by 1). That is, sessions can be
established without assistance from transport and network layers.
Albeit, zero/local-host ip addresses must still be provided in session
establishment messages due to existing application idiosyncrasies. This
mode of communication uses shared-memory fifos (cut-through sessions)
exclusively.
If applications request no namespace, they are assigned to the default
one, which at its turn uses the default fib. Applications can request
access to both local and global scopes for a namespace. If no scope is
specified, session layer defaults to the global one.
When a sw_if_index is provided for a namespace, zero-ip (INADDR_ANY)
binds are converted to binds to the requested interface.
Change-Id: Ia0f660bbf7eec7f89673f75b4821fc7c3d58e3d1
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- add preallocated segment flag
- don't remove pre-allocated segments except if application detaches
- when preallocating fifos in multiple segments, completely fill
a segment before moving to the next
- detach server application from segment-managers when deleting app
- batch syn/syn-ack/fin (re)transmissions
- loosen up close-wait and time-wait times
Change-Id: I412f53ce601cc83b3acc26aeffd7fa2d52d73b03
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- do not scale syn-ack window
- fix the max number of outstanding syns in builtin client
- fix syn-sent ack validation to use modulo arithmetic
- improve retransmit timer handler
- fix output buffer allocator leakeage
- improved debugging
Change-Id: Iac3bc0eadf7d0b494a93e22d210a3153b61b3273
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- cleanup connects segment manager even if first
- fix segment manager allocation for listen sessions
- improve handling of process private segments (mheaps/main heap)
- added segment manager cli
Change-Id: Ic2ca97c3622ab2286d5fb5772aeb57680e64f769
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
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- set session state as closed on session manager delete
- enable retransmit as opposed to persist timer after persist timer completes
- properly discard buffer chain bytes when new data overlaps ooo
segments
- don't use rxt bytes in snd space estimate used on tx path
Change-Id: Id9cab686e532e5fe70c775d5440260e8eb890a9f
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: I0e22c85ea570b934b9c78dc5e86d86d690bdae5e
Signed-off-by: Florin Coras <fcoras@cisco.com>
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- Fix tcp/udp sw checksum computation
- Fix allocation of multi buffer tcp segments for retransmits
- Send FIN only if/when tx fifo is empty
Change-Id: I2e43a14b87a72c9e547b4339b9a51811cf5732c4
Signed-off-by: Florin Coras <fcoras@cisco.com>
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Change-Id: Ica99e8cb919fca6b069c37c969d60e8ccc2c6bf9
Signed-off-by: Florin Coras <fcoras@cisco.com>
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