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2017-07-25Cleanup/refactor session layer codeFlorin Coras11-899/+1044
Change-Id: Ica99e8cb919fca6b069c37c969d60e8ccc2c6bf9 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-07-21Improvements to tcp rx path and debuggingFlorin Coras5-14/+130
- Increment rcv_nxt for fin packets - Call tcp_segment_rcv only if buffer has data - Parse rcv opts before deleting half-open connection - Fix initial rcv_wnd - Improved event logging Change-Id: I9b83c04f432c4cec832c480b03e534deff02c3b1 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-07-20Prevent double freeing of first segment manager.Dave Wallace1-1/+2
Change-Id: I27d7cb4c4e142f29a0c3c3ff85dd1f581970abfc Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2017-07-15Fixes and improved tcp/session debuggingFlorin Coras3-49/+329
- Fix rx sack option parsing - Add session sack scoreboard tracing and replaying - Add svm fifo tracing and replaying - Scoreboard/svm fifo ooo segment reception fixes - Improved overall debugging Change-Id: Ieae07eba355e66f5935253232bb00f2dfb7ece00 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-07-14vnet_buffer_t flags cleanupDamjan Marion1-1/+1
Change-Id: I123eccea98abafeb31f25d2a162501e2eded60d4 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-07-11Horizontal (nSessions) scaling draftDave Barach10-97/+198
- Data structure preallocation. - Input state machine fixes for mid-stream 3-way handshake retries. - Batch connections in the builtin_client - Multiple private fifo segment support - Fix elog simultaneous event type registration - Fix sacks when segment hole is added after highest sacked - Add "accepting" session state for sessions pending accept - Add ssvm non-recursive locking - Estimate RTT for syn-ack - Don't init fifo pointers. We're using relative offsets for ooo segments - CLI to dump individual session Change-Id: Ie0598563fd246537bafba4feed7985478ea1d415 Signed-off-by: Dave Barach <dbarach@cisco.com> Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-07-06Unlink /dev/shm files on application detach.Dave Wallace4-5/+36
Change-Id: Ieb5522cd5cb27bcbce808d4cd6df5248716da43c Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2017-06-22Improve svm fifo and tcp tx path performance (VPP-846)Florin Coras2-9/+11
- multiarch on svm fifo - avoid ip lookup on tx Change-Id: Iab0d85204a710979417bca1d692cc47877131203 Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dbarach@cisco.com>
2017-06-19Overall tcp performance improvements (VPP-846)Florin Coras7-13/+34
- limit minimum rto per connection - cleanup sack scoreboard - switched svm fifo out-of-order data handling from absolute offsets to relative offsets. - improve cwnd handling when using sacks - add cc event debug stats - improved uri tcp test client/server: bugfixes and added half-duplex mode - expanded builtin client/server - updated uri socket client/server code to work in half-duplex - ensure session node unsets fifo event for empty fifo - fix session detach Change-Id: Ia446972340e32a65e0694ee2844355167d0c170d Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-06-14Fix session api connect sock handler.Dave Wallace1-1/+10
Change-Id: I034efb9fc3ebb846c0aef07b18c1f110b8cbf3e3 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2017-06-09Implement sack based tcp loss recovery (RFC 6675)Florin Coras4-33/+63
- refactor existing congestion control code (RFC 6582/5681). Handling of ack feedback now consists of: ack parsing, cc event detection, event handling, congestion control update - extend sack scoreboard to support sack based retransmissions - basic implementation of Eifel detection algorithm (RFC 3522) for detecting spurious retransmissions - actually initialize the per-thread frame freelist hash tables - increase worker stack size to 2mb - fix session queue node out-of-buffer handling - ensure that the local buffer cache vec_len matches reality - avoid 2x spurious event requeues when short of buffers - count out-of-buffer events - make the builtin server thread-safe - fix bihash template threading issue: need to paint -1 across uninitialized working_copy_length vector elements (via rebase from master) Change-Id: I646cb9f1add9a67d08f4a87badbcb117980ebfc4 Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dbarach@cisco.com>
2017-06-07Small update to session APIFlorin Coras2-1/+5
Change-Id: I6a566d1dc9531b790bdcb00edc73516f86daeb72 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-06-01Improve fifo allocator performanceDave Barach7-67/+83
- add option to preallocate fifos in a segment - track active fifos with doubly linked list instead of vector - update udp redirect test code to read fifo pointers from API call instead of digging them up from fifo segment header - input-node based active-open session generator Change-Id: I804b81e99d95f8690d17e12660c6645995e28a9a Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dbarach@cisco.com>
2017-05-20Improve session debuggingFlorin Coras1-17/+30
Also improves builtin client code. Change-Id: I8bca1aa632028f95c373726efb0abf2ee0eff414 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-05-18Remove nop code from session_manager_add_first_segment().Dave Wallace1-2/+0
Change-Id: I071e8d78ed9312ebf8e572bf01ece447ce1a1835 Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2017-05-17VPP-846: tcp perf / scale / hardeningDave Barach3-38/+90
Fix builtin server event queue handling Change-Id: I21b49c37188746cadb2fd9423291c5dc1335798c Signed-off-by: Dave Barach <dbarach@cisco.com>
2017-05-16Fixes to tcp active opens and receptionDave Barach1-1/+5
- Properly initialize connection index - Add new session to main hash table - Drop packets that are completely in the past with respect to the rcv wnd (e.g., retransmits due to premature timer pops) Change-Id: Ic0873018ff0a4c59e0913863dc7f0c0f822d5c34 Signed-off-by: Dave Barach <dbarach@cisco.com> Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-05-15Fix builtin tcp clientDave Barach2-1/+5
Change-Id: I83a1b02a73fd159f14cca04fed3993f571475a00 Signed-off-by: Dave Barach <dbarach@cisco.com>
2017-05-10Multi-thread enablement for the debug cli http serverDave Barach2-1/+15
Change-Id: Iec1f739fe24c722d0db6c10cc81b5e8333067ea1 Signed-off-by: Dave Barach <dbarach@cisco.com>
2017-05-10Builtin debug cli http serverDave Barach2-5/+12
Visit http://<vpp-ip>/show/interface or similar. Change-Id: I076b4661cf19d1b94bb01efdadb5849446be915e Signed-off-by: Dave Barach <dave@barachs.net>
2017-05-09Fix remaining 32-bit compile issuesDamjan Marion2-8/+8
Change-Id: I9664214652229b663c3e3ba7406b4ede96bfb123 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-05-09Add support for tcp/session buffer chainsFlorin Coras3-65/+200
Change-Id: I01c6e3dc3a1b2785df37bb66b19c4b5cbb8f3211 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-05-07Include TCP options in segment size computationFlorin Coras1-1/+1
Ensure that TCP data plus options does not exceed peer's advertised MSS. Change-Id: I0de824cb3619346f0394dd694942fc1cf33a82b7 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-05-04Fixes and improvements in session hashtable keysClement Durand1-53/+35
Fix in v6 keys : * The copy of the keys was only partial A few suggestions are applied in this commit : * Since there are not so many unused fields, we avoid to memset 0 and prefer setting the unused fields to 0. * By using a cast, it seems painless to avoid allocating a structure for the keys creation. Change-Id: Iaee6f036f2a979cceaeb297d98ce6c307a5ac029 Signed-off-by: Clement Durand <clement.durand@polytechnique.edu>
2017-05-01TCP ooo reception fixesFlorin Coras2-3/+19
- Improve svm fifo handling of out-of-order segments - Ensure tsval_recent is updated only if rcv_las falls withing the segments's sequence space - Avoid directly dropping old ACKs - Improve debugging Change-Id: I88dbe2394a0ad7eb389a4cc12d013a13733953aa Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-04-25Session/tcp coverity fixesFlorin Coras1-0/+6
Change-Id: Ic5467df16e870b49c49678b1dbb40f4a2390b3c9 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>
2017-04-24Session layer improvementsFlorin Coras10-218/+330
Among others: - Moved app event queue to shared memory segment - Use private memory segment for builtin apps - Remove pid from svm fifo - Protect session fifo (de)allocation - Use fifo event for session disconnects - Have session queue node poll in all wk threads Change-Id: I89dbf7fdfebef12f5ef2b34ba3ef3c2c07f49ff2 Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-04-21[VPP-704]./uri_tcp_test slave , uri test segment faultflyingeagle231-1/+1
Change-Id: I19dcc3fcf85c63dc7a7f35e023f6269c9f233d3b Signed-off-by: flyingeagle23 <wang.hui56@zte.com.cn>
2017-04-21[vpp-705]uri_cli issue:show session get nothing tips when session management ↵flyingeagle231-2/+2
disable Change-Id: I6844732adcfdd534512f0925059d92b70dcdc080 Signed-off-by: flyingeagle23 <wang.hui56@zte.com.cn>
2017-04-13Session layer refactoringFlorin Coras11-1366/+1617
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>
2017-04-06Use thread local storage for thread indexDamjan Marion1-1/+1
This patch deprecates stack-based thread identification, Also removes requirement that thread stacks are adjacent. Finally, possibly annoying for some folks, it renames all occurences of cpu_index and cpu_number with thread index. Using word "cpu" is misleading here as thread can be migrated ti different CPU, and also it is not related to linux cpu index. Change-Id: I68cdaf661e701d2336fc953dcb9978d10a70f7c1 Signed-off-by: Damjan Marion <damarion@cisco.com>
2017-04-02TCP cc/window management fixes and debuggingFlorin Coras4-13/+61
- added persist timer - update rcv_las whenever sending an ack - moved fifo size to its own cache line - improved session and builtin client debugging Change-Id: Ia649cf942cf0c061a713e8b67f0eb6974a6cd55b Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
2017-03-27TCP/session improvementsFlorin Coras7-89/+165
- Added svm fifo flag for tracking fifo dequeue events (replaces event length). Updated all code to switch to the new scheme. - More session debugging - Fix peek index wrap - Add a trivial socket test client - Fast retransmit/cc fixes - tx and rx SACK fixes and unit testing - SRTT computation fix - remove dupack/ack burst filters - improve ack rx - improved segment rx - builtin client test code Change-Id: Ic4eb2d5ca446eb2260ccd3ccbcdaa73c64e7f4e1 Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dbarach@cisco.com>
2017-03-13VPP-659 Improve tcp/session debugging and testingFlorin Coras5-35/+108
- event-logging support for tcp and session layer - improvements to uri test code - builtin_server on port 1234 - use the CLOSEWAIT timer when we rx FIN in FIN_WAIT_2 state Change-Id: Ibc445f164b2086b20323bf89c77cffd3059f570f Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dbarach@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
2017-03-10VPP-659 TCP improvementsFlorin Coras9-92/+174
- builtin test echo server - fix SYN-ACK retransmit canceling - avoid sending spurious ACK if in LAST_ACK - improved client dummy test app - renamed tx fifo dequeuing and sending functions to avoid confusion - improved RST handling Change-Id: Ia14aad3df319540dcf6e6a4e18a9f8d423a4b83b Signed-off-by: Florin Coras <fcoras@cisco.com> Signed-off-by: Dave Barach <dave@barachs.net>
2017-03-07Register TCP with IP only if session is enabledFlorin Coras1-1/+4
Change-Id: I73154179e78aeae5f879125237bce593d0978fae Signed-off-by: Florin Coras <fcoras@cisco.com>
2017-03-07fix uninitialized ip6 keys within session.cGabriel Ganne1-0/+8
fix for functions: - stream_session_lookup_listener6 - stream_session_lookup6 - stream_session_lookup_transport6 - stream_session_connect_notify eg. ~/vpp/build-data/../src/vnet/session/session.c: In function 'stream_session_lookup_listener6': ~/vpp/build-data/../src/vnet/session/session.c:222:17: error: 'kv6.key[3]' is used uninitialized in this function [-Werror=uninitialized] session_kv6_t kv6; ^ ~/vpp/build-data/../src/vnet/session/session.c:222:17: error: 'kv6.key[2]' is used uninitialized in this function [-Werror=uninitialized] ~/vpp/build-data/../src/vnet/session/session.c:222:17: error: 'kv6.key[5]' is used uninitialized in this function [-Werror=uninitialized] ~/vpp/build-data/../src/vnet/session/session.c:222:17: error: 'kv6.key[4]' is used uninitialized in this function [-Werror=uninitialized] Change-Id: I221cafbaf4effa43662ffcc7bf5f9581e28f9db9 Signed-off-by: Gabriel Ganne <gabriel.ganne@enea.com>
2017-03-04Cleanup URI code and TCP bugfixingFlorin Coras9-66/+278
- 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 Barach13-0/+4940
Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351 Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Florin Coras <fcoras@cisco.com>