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2018-02-14session: support local sessions and deprecate redirectsFlorin Coras1-4/+19
Memfd backed shared memory segments can only be negotiated over sockets. For such scenarios, the existing redirect mechanism that establishes cut-through sessions does not work anymore as the two peer application do not share such a socket. This patch adds support for local sessions, as opposed to sessions backed by a transport connection, in a way that is almost transparent to the two applications by reusing the existing binary api messages. Moreover, all segment allocations are now entirely done through the segment manager valloc, so segment overlaps due to independent allocations previously required for redirects are completely avoided. The one notable characteristic of local sessions (cut-through from app perspective) notification messages is that they carry pointers to two event queues, one for each app peer, instead of one. For transport-backed sessions one of the queues can be inferred but for local session they cannot. Change-Id: Ia443fb63e2d9d8e43490275062a708f039038175 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-01-23VPPAPIGEN: vppapigen replacement in Python PLY.Ole Troan1-1/+1
This is a version of the VPP API generator in Python PLY. It supports the existing language, and has a plugin architecture for generators. Currently C and JSON are supported. Changes: - vl_api_version to option version = "major.minor.patch" - enum support - Added error checking and reporting - import support (removed the C pre-processor) - services (tying request/reply together) Version: option version = "1.0.0"; Enum: enum colours { RED, BLUE = 50, }; define foo { vl_api_colours_t colours; }; Services: service { rpc foo returns foo_reply; rpc foo_dump returns stream foo_details; rpc want_stats returns want_stats_reply events ip4_counters, ip6_counters; }; Future planned features: - unions - bool, text - array support (including length) - proto3 output plugin - Refactor C/C++ generator as a plugin - Refactor Java generator as a plugin Change-Id: Ifa289966c790e1b1a8e2938a91e69331e3a58bdf Signed-off-by: Ole Troan <ot@cisco.com>
2017-11-17vppcom: improve listener session handlingFlorin Coras1-0/+3
Change-Id: I86b2e2c5a655e53a915fbf62ff04ee23c86de234 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-11-10session: add app ns index to ns create apiFlorin Coras1-1/+13
Change-Id: I86bfe4e8b0a899cc54c9b37eeb5eec701d0baf3d Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-11-06session: add rule tagsFlorin Coras1-0/+2
Change-Id: Id5ebb410f509ac4c83d60e48efd54e00035e5ce6 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-11-05session: add api to dump rulesFlorin Coras1-0/+44
Change-Id: Ie42fd77e75e86a45cfe5951768c4638f27fdc3aa Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-10-28session: rules tablesFlorin Coras1-0/+38
This introduces 5-tuple lookup tables that may be used to implement custom session layer actions at connection establishment time (session layer perspective). The rules table build mask-match-action lookup trees that for a given 5-tuple key return the action for the first longest match. If rules overlap, ordering is established by tuple longest match with the following descending priority: remote ip, local ip, remote port, local port. At this time, the only match action supported is to forward packets to the application identified by the action. Change-Id: Icbade6fac720fa3979820d50cd7d6137f8b635c3 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-10-17session: return local transport endpoint in connect replyFlorin Coras1-0/+6
Change-Id: I7794d5a0774017da4c1c15f45783a18754994ac8 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-10-10session: add support for application namespacingFlorin Coras1-12/+39
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>
2017-10-09vppapigen: support per-file (major,minor,patch) version stampsDave Barach1-1/+3
Add one of these statements to foo.api: vl_api_version 1.2.3 to generate a version tuple stanza in foo.api.h: /****** Version tuple *****/ vl_api_version_tuple(foo, 1, 2, 3) Change-Id: Ic514439e4677999daa8463a94f948f76b132ff15 Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Ole Troan <ot@cisco.com>
2017-09-07Fix session connect_* api message handling.Dave Wallace1-32/+13
Change-Id: If7fd125989c90240de12953658d10007b9eb4f07 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2017-06-07Small update to session APIFlorin Coras1-0/+4
Change-Id: I6a566d1dc9531b790bdcb00edc73516f86daeb72 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-04-25"autoreply" flag: autogenerate standard xxx_reply_t messagesDave Barach1-61/+7
Change-Id: I72298aaae7d172082ece3a8edea4217c11b28d79 Signed-off-by: Dave Barach <dave@barachs.net>
2017-04-13Session layer refactoringFlorin Coras1-144/+93
Major refactoring of the session layer api - Add attatch api for application binding to the the session layer - Simplify listen/connect calls - Update application CLI - Add transport endpoint to accept callback - Associate segment manager to application and allow for multiple binds/connects per app Additional: - svm fifo cleanup - add fifo free, format fns - add fifo offset enqueue unit test Change-Id: Id93a65047de61afc2bf3d58c9b544339c02065af Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
2017-03-04Cleanup URI code and TCP bugfixingFlorin Coras1-0/+22
- Add CLI/API to enable session layer, by default it's disabled - Improve rcv wnd computation - Improvements to tx path - URI code cleanup - Builtin test tcp server - Improve src port allocation Change-Id: I2ace498e76a0771d4c31a8075cc14fe33d7dfa38 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-03-01VPP-598: tcp stack initial commitDave Barach1-0/+429
Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351 Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Florin Coras <fcoras@cisco.com>