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2019-02-18tcp: harden for high scale scenariosFlorin Coras5-29/+69
- Better handle buffer starvation scenarios - Handle case when both peers enter recovery due to packet loss. - Fix passive open establish cleanup Change-Id: I2f28baa2ff0383bb8f5f6d2452b49aa38ce69bce Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-18tcp: fix handling of retransmitted synsFlorin Coras2-16/+26
Change-Id: I88fdeb0ca56d3a5d9c0f36def13c6de8142f59f0 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-09buffers: fix typoDamjan Marion1-1/+1
Change-Id: I4e836244409c98739a13092ee252542a2c5fe259 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-02-09session: refactor listen logicFlorin Coras1-1/+1
Make app-listener the handle for app listens. Consequently transport and local listen sessions are now associated to the app-listener. Change-Id: I9397a26d42cccb100970b6b4794c15bac2e11465 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-07tcp: fix fib_index for v6 ll packetsFlorin Coras1-0/+7
Change-Id: Ie69bdb9860d61f2c599c0c80b0ea80dfdfe178bd Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-07tcp: fix reset sending in syn-sentFlorin Coras3-6/+7
Change-Id: I468b1015bca5f95b162fb49e904aa4e4d38db75e Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-06buffers: make buffer data size configurable from startup configDamjan Marion1-1/+1
Example: buffers { default data-size 1536 } Change-Id: I5b4436850ca18025c9fdcfc7ed648c2c2732d660 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-02-06transport: cleanupFlorin Coras2-11/+12
- 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>
2019-02-04session: cleanup part 1Florin Coras1-5/+5
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>
2019-02-02session: improve show session cliFlorin Coras1-1/+5
Change-Id: If30cea80058752cedcc6ecc38e90bef8732c83d3 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-02-02tcp: remove internal buffer cacheFlorin Coras2-81/+32
Change-Id: I3051d49aa9b9c38dcd8069ea1748f74ab20ac0f6 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-20tcp: fix debugging without cc stats (VPP-1547)Florin Coras1-0/+1
Change-Id: I376856fcadce570bb555064435f5876eefb2befa Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-19buffers: remove free-list information from buffer metadataDamjan Marion1-1/+0
Change-Id: I6048c6a51efa826ac333f7d15919cb87dd766d74 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-01-18tcp: allow data in passive open ack (VPP-1545)Florin Coras1-2/+3
Change-Id: Iceb99d3f8b7029bd1b1e9ebafb1e0b3790c573e4 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-12session: generate wrong thread errors instead of crashingFlorin Coras2-6/+7
Change-Id: I7e59ae718d2722c49d42b22a0874e1645a191e89 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-04tcp: fix reset in syn-sentFlorin Coras1-2/+1
Change-Id: I6732adc06fbb3d4b427e671ddcfe6eabc08d4a1b Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-03tcp: add more closing state arcsFlorin Coras1-0/+19
Change-Id: If6f4d6404753b2d6b96e17f5414079bcdb9edde8 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-03tcp: better randomize issFlorin Coras2-4/+41
Change-Id: I3638221e59024d6b7d82499d57e25b8e609f73cb Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-01-01buffers: remove unused codeDamjan Marion1-2/+1
Change-Id: If2bbfbc52994f5de0879763e0b7a7864498debb6 Signed-off-by: Damjan Marion <damarion@cisco.com>
2019-01-01vcl/ldp: add write msg function and fine tuningFlorin Coras2-4/+7
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>
2018-12-28session: free session after transport and app confirmFlorin Coras2-9/+9
In addition to that, a bit of refactoring. Change-Id: Iea1eabc2167bcdef185ec53bc09bae087c5398e6 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-26tcp: add more last-ack arcsFlorin Coras1-0/+19
Change-Id: If538bb9d6fb489906099b727a7bfdb9d9af29402 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-26tcp: separate active and passive establish timersFlorin Coras5-94/+107
Change-Id: Ia2241e963cf45765d8d17c65eea781edbf74d4f9 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-25tcp: add fin-wait-1 dispatch arcsFlorin Coras1-0/+19
Change-Id: Ie4cb08f5d9f7fd025f1a8ae610cebb0b0c315d9f Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-24tcp: compute seq_end in tcp_inputFlorin Coras3-50/+41
syn/fin are no longer added to seq_end so they must be considered individually in each state. Change-Id: I5e3047194101c4fca2db9f9ad29a4a6468c397ab Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-22tcp: improve waitclose in closing statesFlorin Coras4-17/+64
Change-Id: I90056176194cb2a144d49a3cb283653d8d30f051 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-21tcp: fix fin_wait_1 condition to send finFlorin Coras2-2/+6
Also add the closed-waiting session state wherein the session still allows the transport to send oustanding data. Change-Id: Ic47807379906ef2010934381ff0b9e53c7e631d8 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-20tcp: fix syn-sent resetFlorin Coras1-7/+9
Change-Id: I4a811672b27c70bf0e9652c175c7f4168ec40ed7 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-19session: add cli option to dump session elogFlorin Coras1-0/+1
Change-Id: I1f42644f143bb65ee764c0f869b402595126adac Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-19tcp: fix fin in syn-rcvdFlorin Coras2-11/+18
Change-Id: Iba7c08c9edcf76ea24d00d5ea9e0586e9f94df4e Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-19tcp: add more state machine arcsFlorin Coras1-5/+79
This mostly adds explicit drops or resets for state and flag combinations that would've been otherwise dropped with a warning message. It also adds some valid RST handlers. Change-Id: Ib0d19a0939fe275befeb29cf072b87b1a79937ce Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-19tcp/session: notify transport of close when tx fifo is not emptyFlorin Coras3-12/+21
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>
2018-12-18tcp/session: drop connections if message queue is fullFlorin Coras2-14/+18
Also cleanup session table when transport closes and app didn't reply to the close notification. Change-Id: Ie3d518e3afff73437561561b46dbf695c24632ad Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-18tcp: cleanup connections if handshake failsFlorin Coras1-3/+2
Change-Id: If109d6772cbd58f4f2a56ae7ec593639d1fa1b96 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-17tcp: fix handling of broken syn optionsFlorin Coras4-5/+15
Change-Id: Ia8b2a077ba4897ddd15cf33221b191cd7a3f1d33 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-17tcp: accept rst that fail pawsFlorin Coras1-9/+9
Change-Id: I945d1644a23b6a3d50c9beaffc732d2b6facd974 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-17vcl/session: handle reset/disconnect before app acceptFlorin Coras1-2/+4
Also further improves reset handling. Change-Id: I6e517632f700f181761726b965134e0c217eb06d Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-13tcp: drop handshake ack with fin setFlorin Coras1-1/+1
Change-Id: I529c34235ad2b0e4c730959bb1b8c9d50a83738c Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-13tcp: fix handling of no wscale in synsFlorin Coras2-1/+6
Change-Id: I7219a8d315b312812acafd9d2709fba8b4a2a679 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-13tcp: validate seq for handshake ackFlorin Coras1-0/+8
Change-Id: Ifc0584d781efc30904069ea17c0afbb68c49c442 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-13session/tcp: support tx flush markFlorin Coras4-1/+26
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>
2018-12-07tcp: improve check for invalid sack blocksFlorin Coras1-1/+3
Change-Id: Ic6a6202a2d5aca33eee7fc6ff8eeaa1db9b58525 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-07tcp: measure us rtt with syn-ackFlorin Coras1-0/+1
Change-Id: I20820145377060e12aeeb23b433206c79fd88332 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-07tcp: fix timestamp check and pawsFlorin Coras1-5/+2
Change-Id: I5a5ee48755befc370a1f89ddbb0d91f164ed564f Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-07tcp: better handling of options only allowed in synsFlorin Coras1-9/+18
Change-Id: I6debfe85d9d55f6f9a8ef0ce1dcc008393847a37 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-07tcp: validate connection state in retransmitFlorin Coras1-2/+2
Change-Id: Ia9048bb4e074f7ebc36eb77e542a916924103332 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-07tcp: fix length checkFlorin Coras1-3/+14
Change-Id: Iff75be238a231df88a37b61610c134e4a4770708 Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-12-05session/tcp: postpone cleanup on resetFlorin Coras2-2/+8
Change-Id: I45fd7538853f84c6c8bf804cc20acbc9601db3ba Signed-off-by: Florin Coras <fcoras@cisco.com>
2018-11-30Metadata / opaque formatting belongs in vppDave Barach1-0/+2
VPP graph dispatch trace record description: 0 1 2 3 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Major Version | Minor Version | NStrings | ProtoHint | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer index (big endian) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ + VPP graph node name ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Metadata ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Opaque ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Buffer Opaque 2 ... ... | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | VPP ASCII packet trace (if NStrings > 4) | NULL octet | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Packet data (up to 16K) | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Graph dispatch records comprise a version stamp, an indication of how many NULL-terminated strings will follow the record header, and a protocol hint. The buffer index allows downstream consumers of these data to easily filter/track single packets as they traverse the forwarding graph. FWIW, the 32-bit buffer index is stored in big endian format. As of this writing, major version = 1, minor version = 0. Nstrings will be either 4 or 5. Here is the current set of protocol hints: typedef enum { VLIB_NODE_PROTO_HINT_NONE = 0, VLIB_NODE_PROTO_HINT_ETHERNET, VLIB_NODE_PROTO_HINT_IP4, VLIB_NODE_PROTO_HINT_IP6, VLIB_NODE_PROTO_HINT_TCP, VLIB_NODE_PROTO_HINT_UDP, VLIB_NODE_N_PROTO_HINTS, } vlib_node_proto_hint_t; Example: VLIB_NODE_PROTO_HINT_IP6 means that the first octet of packet data SHOULD be 0x60, and should begin an ipv6 packet header. Change-Id: Idf310bad80cc0e4207394c80f18db5f77c378741 Signed-off-by: Dave Barach <dave@barachs.net>
2018-11-26Minor tweaksDave Barach1-10/+11
Significant refit coming soon. Signed-off-by: Dave Barach <dave@barachs.net> Change-Id: If7d196e84354c5088706e2ac81e2add42597a550