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2019-07-26session tcp: handle rxt and acks as custom eventsFlorin Coras4-173/+138
Type: feature Control ack generation and retransmissions with session layer scheduler. Change-Id: Iacdf9f84ab81f44851980aa45a83e75f29be2b7b Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-25session: add transport deleted stateFlorin Coras1-1/+0
Type: fix Distinguish between closed and deleted states to avoid deleting the session prior to the transport connection. Change-Id: Ia285ce94b26a70773f8c0ce9d2c73095d3e2a337 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-23tcp: generate closed notifications whenever tcp closesFlorin Coras2-1/+6
Type: fix This gives the session layer a chance to to cleanup events. Change-Id: I7499e94acf06340e2b19a1d91a4c61a63cd66c52 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-17tcp: add node with no 6-tuple lookupVladimir Kropylev1-22/+96
Type: feature Add new node in TCP stack where TCP 6 tuple lookup is not required. In new node, packet metadata contains connection-index which can be used to retrieve the TCP connection. The new node will be used by proxy. Change-Id: I3aa0268946898912f4176d5c8c5903e06657479d Signed-off-by: Vladimir Kropylev <vladimir.kropylev@enea.com>
2019-07-15session: allow transports to generate closed notificationsFlorin Coras1-0/+2
In contrast to the closing notification, whereby a transport informs the session layer that is beginning the closing procedure, this allows transports to notify the session layer of the fact that the transport is "fully" closed, i.e., it expects no more data. Also: - adds app closed state for sessions - changes tcp to have it notify when an active close has finished Type: feature Change-Id: I13c738006c03f85015e05ab82843a33a69382aaf Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-12session: add thread index to all formattersAloys Augustin1-0/+2
Add a thread_index argument to half-open and listener session formatters because QUIC can have listeners and half-open sessions in any thread. Change-Id: I1de60e35ece4c68ba8cfdd6b63f211bc620d687b Signed-off-by: Aloys Augustin <aloaugus@cisco.com> Type: feature
2019-07-10tcp: improve rate estimateFlorin Coras2-9/+22
Type:feature - sample rtt estimation - report acked+sacked - report last lost bytes - use snd_una == snd_nxt to detect 0 bytes in flight Change-Id: I83181261fdb375c7e33d24b7a82343561e6a905f Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-09tcp: track last lost bytes in sack sbFlorin Coras2-3/+10
Type:feature Change-Id: I687809ebcc759cec8cb1d5c3b2b7e6bc995a7985 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-05tcp: timestamp adjustmentVladimir Kropylev3-3/+14
Type: feature Change-Id: Icb3c574100cde95ab5be4923c8739889cf7e48c6 Signed-off-by: Vladimir Kropylev <vladimir.kropylev@enea.com>
2019-07-05tcp: add cc algo start tx eventFlorin Coras2-0/+16
Type: feature Notify cc algos that new data is sent on a connection that was apparently idle. Change-Id: I892e5e9bb5b88d791265ffbbefce6f9694d01970 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-05tcp: add cc algo undo recovery notificationFlorin Coras2-18/+23
Type:feature Change-Id: Iedefe87555f0a0033abed8569bc2995c8f523d7e Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-07-05tcp: add loss signal to cc algoFlorin Coras5-26/+62
Type:feature Change-Id: Ibe1a4c555b55fb929d55b02599aaf099ed522cdf Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-28tcp: reject out-of-order finsFlorin Coras1-0/+4
Type:fix Change-Id: Iab2c308739f7733dbf70953e0ea87dcc404c60da Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-28tcp: fix close-waiting check for outstanding tx dataFlorin Coras1-1/+2
Type: fix Change-Id: I9e0e1bb933c38b17ac9fb8bf11b81e2fed021bf8 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-27tcp: Setup initial CWND as configuredVladimir Kropylev2-0/+11
Type: feature Change-Id: I7f476f4f81994c9c6cc2e8091de08adff4bcbc77 Signed-off-by: Vladimir Kropylev <vladimir.kropylev@enea.com>
2019-06-27session: Add transport vft protocol optionsNathan Skrzypczak1-2/+4
Type: refactor Change-Id: I4e0afc206e4871596c2ed8a6ca00914a379f1526 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2019-06-25tcp: window update ackVladimir Kropylev2-0/+33
Type: feature Provide interface for sending Window Update ACK, ensuring it will be sent only once, if RWND became non-zero, after zero RWND has been advertised before. Change-Id: I7f0d8af76d7763208625df68ab4ac3727fdaf449 Signed-off-by: Vladimir Kropylev <vladimir.kropylev@enea.com>
2019-06-25tcp: delivery rate estimatorFlorin Coras7-28/+760
Type: feature First cut implementation with limited testing. The feature is not enabled by default and the expectation is that cc algorithms will enable it on demand. Change-Id: I92b70cb4dabcff0e9ccd1d725952c4880af394da Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-21tcp: add option to pass opaque to next nodeFlorin Coras2-2/+7
Type:feature Change-Id: I0b72954a6ae6a05abe0761cb4f227072863f127b Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-18tcp: allow custom output next nodeFlorin Coras2-0/+4
Type: feature Change-Id: If9804d3685d2a52efa06e412ae1ebb39c6a44b8b Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-17session: use listener_handle instead of listener_indexNathan Skrzypczak1-1/+1
Type: refactor Change-Id: I97fa59a0ba0b6b7a98698926020ffffcf6ae6ba3 Signed-off-by: Nathan Skrzypczak <nathan.skrzypczak@gmail.com>
2019-06-13tcp: fix tcp_do_fastretransmits failure.Guoao Sun1-0/+2
Type: fix vpp would fail 'tcp_in_fastrecovery (tc)' if tcp_connection_get returns 0. Change-Id: I512cba5234b3777f1737bec9451940e7e7975f15 Signed-off-by: Guoao Sun <guoao.sun@intel.com>
2019-06-12tcp: better estimate snd space for rxt with no sacksFlorin Coras2-4/+2
Type: refactor Use tcp_available_cc_snd_space instead of sack scoreboard last_delivered_bytes to estimate available space when retransmitting with no sack support Change-Id: I938c637279eaf8c5634c4e97f0633fa2d0054fac Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-11tcp: allow registration of new cc algo typesFlorin Coras2-5/+23
Type: feature Change-Id: I83e21b508a19df1beb207d961c8f2b52347deca0 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-08tcp: send challenge ack for in wnd synFlorin Coras1-1/+2
Type: fix Per rfc793, in window syns for established connections should lead to connection resets. As a mitigation for blind reset attacks, rfc5961 requests that such syns be replied to with challange acks. Change-Id: I75e4972bbb515e48d9cf1bda32ea5d9891d670f0 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-08tcp: close connection if not recovered after max triesFlorin Coras2-0/+14
Type: feature Change-Id: Ia8af6a62a2be2265bc42955d90e8c2222bdb8f50 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-07tcp: add cc cleanup functionFlorin Coras2-25/+34
Type: feature Change-Id: I54521078cf96e459d041c86297c6ca80045bf0a3 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-07tcp: log connect notify errorsFlorin Coras1-1/+2
Type: fix Change-Id: Idf0b2e16b2e7d126940bb38c7983d6784b5bfdc8 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-06-03ARP: add feature arcNeale Ranns1-8/+6
- arp-input, registered with the ethernet protocol dispatcher, performs basic checks and starts the arc - arp-reply; first feature on the arc replies to requests and learns from responses (no functional change) - arp-proxy; checks against the proxy DB arp-reply and arp-proxy are enabled when the interface is appropriately configured. Change-Id: I7d1bbabdb8c8b8187cac75e663daa4a5a7ce382a Signed-off-by: Neale Ranns <nranns@cisco.com>
2019-05-27tcp: handle disconnects in rcv-processFlorin Coras1-0/+1
Change-Id: I005f96480e81f3e750c18261e78d0e401da7528e Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-16svm_fifo rework to avoid contention on cursizeSirshak Das1-1/+1
Problems Addressed: - Contention of cursize by producer and consumer. - Reduce the no of modulo operations. Changes: - Synchronization between producer and consumer changed from cursize to head and tail indexes Implications: reduces the usable size of fifo by 1. - Using weaker memory ordering C++11 atomics to access head and tail based on producer and consumer role. - Head and tail indexes are unsigned 32 bit integers. Additions and subtraction on them are implicit 32 bit Modulo operation. - Adding weaker memory ordering variants of max_enq, max_deq, is_empty and is_full Using them appropriately in all places. Perfomance improvement (iperf3 via Hoststack): iperf3 Server: Marvell ThunderX2(AArch64) - iperf3 Client: Skylake(x86) ~6%(256 rxd/txd) - ~11%(2048 rxd/txd) Change-Id: I1d484e000e437430fdd5a819657d1c6b62443018 Signed-off-by: Sirshak Das <sirshak.das@arm.com> Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
2019-04-08host stack: update stale copyrightFlorin Coras9-9/+9
Change-Id: I33cd6e44d126c73c1f4c16b2041ea607b4d7f39f Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-05tcp: do not delete session on establish popFlorin Coras3-29/+34
Also: - force reset if wait close pops in fin-wait-1 with unsent data - adds more event logging. Change-Id: I4ddada046214fa71e17514cdec57b3026f84a283 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-04tcp: properly validate acks between snd_nxt and una_maxFlorin Coras1-2/+4
Change-Id: I37af3cb5fe3fe8556acbf8350f88663dca9ca8a9 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-04tcp: shorten wait in fin-wait-1 with fin rcvdFlorin Coras3-9/+18
Change-Id: Ifddc32ab3da0e691ac3df74ff26e19f6fa00fef7 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-04-02tcp: improve rcv process ack processingFlorin Coras4-68/+79
- Avoid doing cc in closing states. - Rest connections closed with unread data Change-Id: I97d46b0459f03ea5439eeb0f233b6c17d3e06dfd Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-29tcp: remove sent rcv wnd 0 flagFlorin Coras3-13/+2
Change-Id: If6c672d1caa8884eb5d819311606a79a3de81200 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-29tcp: improve updating of rcv wndFlorin Coras1-10/+7
Change-Id: I0b8a311979d3ccd15f3854e7ac44ca9951dc6ce4 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-28tcp: remove unused buffer flagsFlorin Coras2-23/+0
Change-Id: I86e71f32dee3cc48f680e6432a96caef0a7f66a1 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-27tcp: add cc algo lookup tableFlorin Coras2-7/+17
Change-Id: Ie7be0136c182cdc35193e47dd3249153c2f8d65e Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-23tcp: make default mtu configurableFlorin Coras3-7/+10
Change-Id: I56d8d8d67d5590e24c1ddb54b0c63a2cb03798e1 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-22tcp: improve handling of snd_nxtFlorin Coras4-124/+91
- avoid changing snd_nxt when doing fast retransmits - use snd_una_max only to keep track of the max seq number sent - simplify future ack testing Change-Id: I3580ad3aefe30128486c3375d0ac3f3f62c04c5e Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-20tcp: disable cc elog debuggingFlorin Coras1-2/+2
Change-Id: Iffed748a15b9f01b985f9a6a9574a7bc42ab55aa Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-14tcp: drop anything but fins in TIME_WAITFlorin Coras1-0/+4
Change-Id: I8414c2ed8bda59504330aad5f1a80dfe08dd85de Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-13tcp: fix entering closing state while in fast recoveryFlorin Coras1-5/+15
Change-Id: I30470e8a1404632b0350056769338dc69a94c105 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-13tcp: avoid computing flags in push hdr inlineFlorin Coras1-26/+3
Change-Id: I579eef6d70b94b20e22b7b116ac63b2d7af49b22 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-12tcp: print congestion control algorithm in cliFlorin Coras1-11/+12
And shuffle some of the other connection variables. Change-Id: Ib5361d0a45537a3bd2421b8e4145ea0f0e525d91 Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-08tcp: fix rcv_wnd computationFlorin Coras1-1/+1
Change-Id: I3cecffae2e30233d4725bd3eaf5ff4a8ff194fae Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-08session/tcp/vcl: fixes and optimizationsFlorin Coras3-9/+4
Change-Id: Idc7dfe743399dd8dee0f6b3ec83f194f3fca580b Signed-off-by: Florin Coras <fcoras@cisco.com>
2019-03-08tcp: fix window probes in fin-wait-1Florin Coras2-15/+10
Change-Id: Idf060f385f4d9b2f42fdab6a1d372727beb8b19e Signed-off-by: Florin Coras <fcoras@cisco.com>