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2018-09-17Add empty .s file to allow `//go:linkname`Tamir Duberstein
This was previously broken in 212917409, resulting in "missing function body" compilation errors. PiperOrigin-RevId: 213323695 Change-Id: I32a95b76a1c73fd731f223062ec022318b979bd4
2018-09-17Implement packet forwarding to enable NATTamir Duberstein
PiperOrigin-RevId: 213323501 Change-Id: I0996ddbdcf097588745efe35481085d42dbaf446
2018-09-14Remove buffer.Prependable.UsedBytesTamir Duberstein
It is the same as buffer.Prependable.View. PiperOrigin-RevId: 213064166 Change-Id: Ib33b8a2c4da864209d9a0be0a1c113be10b520d3
2018-09-14Pass buffer.Prependable by valueTamir Duberstein
PiperOrigin-RevId: 213053370 Change-Id: I60ea89572b4fca53fd126c870fcbde74fcf52562
2018-09-13Plumb monotonic time to netstackIan Gudger
Netstack needs to be portable, so this seems to be preferable to using raw system calls. PiperOrigin-RevId: 212917409 Change-Id: I7b2073e7db4b4bf75300717ca23aea4c15be944c
2018-09-12Always pass buffer.VectorisedView by valueTamir Duberstein
PiperOrigin-RevId: 212757571 Change-Id: I04200df9e45c21eb64951cd2802532fa84afcb1a
2018-09-12Add multicast supportTamir Duberstein
PiperOrigin-RevId: 212750821 Change-Id: I822fd63e48c684b45fd91f9ce057867b7eceb792
2018-09-12Prevent UDP sockets from binding to bound portsTamir Duberstein
PiperOrigin-RevId: 212653818 Change-Id: Ib4e1d754d9cdddeaa428a066cb675e6ec44d91ad
2018-09-10Simplify some code in VectorisedView#ToView.Bert Muthalaly
PiperOrigin-RevId: 212317717 Change-Id: Ic77449c53bf2f8be92c9f0a7a726c45bd35ec435
2018-09-05Fix race condition introduced in 211135505Tamir Duberstein
Now that it's possible to remove subnets, we must iterate over them with locks held. Also do the removal more efficiently while I'm here. PiperOrigin-RevId: 211737416 Change-Id: I29025ec8b0c3ad11f22d4447e8ad473f1c785463
2018-09-05Update {LinkEndpoint,NetworkEndpoint}#WritePacket to take a VectorisedViewBert Muthalaly
Makes it possible to avoid copying or allocating in cases where DeliverNetworkPacket (rx) needs to turn around and call WritePacket (tx) with its VectorisedView. Also removes the restriction on having VectorisedViews with multiple views in the write path. PiperOrigin-RevId: 211728717 Change-Id: Ie03a65ecb4e28bd15ebdb9c69f05eced18fdfcff
2018-09-05Implement Subnet removalTamir Duberstein
This was used to implement https://fuchsia-review.googlesource.com/c/garnet/+/177771. PiperOrigin-RevId: 211725098 Change-Id: Ib0acc7c13430b7341e8e0ec6eb5fc35f5cee5083
2018-09-05Enable constructing a Prependable from a View without allocating.Bert Muthalaly
PiperOrigin-RevId: 211722525 Change-Id: Ie73753fd09d67d6a2ce70cfe2d4ecf7275f09ce0
2018-09-05Implement TCP keepalivesTamir Duberstein
PiperOrigin-RevId: 211670620 Change-Id: Ia8a3d8ae53a7fece1dee08ee9c74964bd7f71bb7
2018-09-04Automated rollback of changelist 211156845Bhasker Hariharan
PiperOrigin-RevId: 211525182 Change-Id: I462c20328955c77ecc7bfd8ee803ac91f15858e6
2018-09-04Expose TCP RTTTamir Duberstein
PiperOrigin-RevId: 211504634 Change-Id: I9a7bcbbdd40e5036894930f709278725ef477293
2018-09-04Distinguish Element and Linker for ilist.Adin Scannell
Furthermore, allow for the specification of an ElementMapper. This allows a single "Element" type to exist on multiple inline lists, and work without having to embed the entry type. This is a requisite change for supporting a per-Inode list of Dirents. PiperOrigin-RevId: 211467497 Change-Id: If2768999b43e03fdaecf8ed15f435fe37518d163
2018-08-31Automated rollback of changelist 211103930Googler
PiperOrigin-RevId: 211156845 Change-Id: Ie28011d7eb5f45f3a0158dbee2a68c5edf22f6e0
2018-08-31ipv6: ICMP supportTamir Duberstein
This CL does NDP link-address discovery for IPv6. It includes several small changes necessary to get linux to talk to this implementation. In particular, a hop limit of 255 is necessary for ICMPv6. PiperOrigin-RevId: 211103930 Change-Id: If25370ab84c6b1decfb15de917f3b0020f2c4e0e
2018-08-29ping: update comment about UDPIan Gudger
PiperOrigin-RevId: 210788012 Change-Id: I5ebdcf3d02bfab3484a1374fbccba870c9d68954
2018-08-27Add various statisticsTamir Duberstein
PiperOrigin-RevId: 210442599 Change-Id: I9498351f461dc69c77b7f815d526c5693bec8e4a
2018-08-25Upstreaming DHCP changes from FuchsiaTamir Duberstein
PiperOrigin-RevId: 210221388 Change-Id: Ic82d592b8c4778855fa55ba913f6b9a10b2d511f
2018-08-23netstack: make listening tcp socket close state setting and cleanup atomic.Zhaozhong Ni
Otherwise the socket saving logic might find workers still running for closed sockets unexpectedly. PiperOrigin-RevId: 210018905 Change-Id: I443a04d355613f5f9983252cc6863bff6e0eda3a
2018-08-23Encapsulate netstack metricsIan Gudger
PiperOrigin-RevId: 209943212 Change-Id: I96dcbc7c2ab2426e510b94a564436505256c5c79
2018-08-22Allow building on !linuxGoogler
PiperOrigin-RevId: 209819644 Change-Id: I329d054bf8f4999e7db0dcd95b13f7793c65d4e2
2018-08-21Expose route tableGoogler
PiperOrigin-RevId: 209670528 Change-Id: I2890bcdef36f0b5f24b372b42cf628b38dd5764e
2018-08-21Build PCAP file with atomic blocking writesIan Gudger
The previous use of non-blocking writes could result in corrupt PCAP files if a partial write occurs. Using (*os.File).Write solves this problem by not allowing partial writes. This change does not increase allocations (in one path it actually reduces them), but does add additional copying. PiperOrigin-RevId: 209652974 Change-Id: I4b1cf2eda4cfd7f237a4245aceb7391b3055a66c
2018-08-16Internal change.Googler
PiperOrigin-RevId: 209060862 Change-Id: I2cd02f0032b80d0087110095548b1a8ffa696ac2
2018-08-15Remove obsolete comment about panickingIan Gudger
PiperOrigin-RevId: 208908702 Change-Id: I6be9c765c257a9ddb1a965a03942ab3fc3a34a43
2018-08-08Basic support for ip link/addr and ifconfigFabricio Voznika
Closes #94 PiperOrigin-RevId: 207997580 Change-Id: I19b426f1586b5ec12f8b0cd5884d5b401d334924
2018-08-08Resend packets back to netstack if destined to itselfFabricio Voznika
Add option to redirect packet back to netstack if it's destined to itself. This fixes the problem where connecting to the local NIC address would not work, e.g.: echo bar | nc -l -p 8080 & echo foo | nc 192.168.0.2 8080 PiperOrigin-RevId: 207995083 Change-Id: I17adc2a04df48bfea711011a5df206326a1fb8ef
2018-08-08Fix data race in unix.BoundEndpoint.UnidirectionalConnect.Ian Gudger
Data race is: Read: (*connectionlessEndpoint).UnidirectionalConnect: writeQueue: e.receiver.(*queueReceiver).readQueue, Write: (*connectionlessEndpoint).Close: e.receiver = nil The problem is that (*connectionlessEndpoint).UnidirectionalConnect assumed that baseEndpoint.receiver is immutable which is explicitly not the case. Fixing this required two changes: 1. Add synchronization around access of baseEndpoint.receiver in (*connectionlessEndpoint).UnidirectionalConnect. 2. Check for baseEndpoint.receiver being nil in (*connectionlessEndpoint).UnidirectionalConnect. PiperOrigin-RevId: 207984402 Change-Id: Icddeeb43805e777fa3ef874329fa704891d14181
2018-08-07Adds support to dump out cubic internal state.Bhasker Hariharan
PiperOrigin-RevId: 207754087 Change-Id: I83abce64348ea93f8692da81a881b364dae2158b
2018-08-07Netstack doesn't handle sending after SHUT_WR correctly.Brian Geffon
PiperOrigin-RevId: 207715032 Change-Id: I7b6690074c5be283145192895d706a92e921b22c
2018-08-03Cubic implementation for Netstack.Bhasker Hariharan
This CL implements CUBIC as described in https://tools.ietf.org/html/rfc8312. PiperOrigin-RevId: 207353142 Change-Id: I329cbf3277f91127e99e488f07d906f6779c6603
2018-08-02Automated rollback of changelist 207037226Zhaozhong Ni
PiperOrigin-RevId: 207125440 Change-Id: I6c572afb4d693ee72a0c458a988b0e96d191cd49
2018-08-01Move stack clock to options structIan Gudger
PiperOrigin-RevId: 207039273 Change-Id: Ib8f55a6dc302052ab4a10ccd70b07f0d73b373df
2018-08-01Automated rollback of changelist 207007153Michael Pratt
PiperOrigin-RevId: 207037226 Change-Id: I8b5f1a056d4f3eab17846f2e0193bb737ecb5428
2018-08-01stateify: convert all packages to use explicit mode.Zhaozhong Ni
PiperOrigin-RevId: 207007153 Change-Id: Ifedf1cc3758dc18be16647a4ece9c840c1c636c9
2018-07-30netstack: support disconnect-on-save option per fdbased link.Zhaozhong Ni
PiperOrigin-RevId: 206659972 Change-Id: I5e0e035f97743b6525ad36bed2c802791609beaf
2018-07-27stateify: support explicit annotation mode; convert refs and stack packages.Zhaozhong Ni
We have been unnecessarily creating too many savable types implicitly. PiperOrigin-RevId: 206334201 Change-Id: Idc5a3a14bfb7ee125c4f2bb2b1c53164e46f29a8
2018-07-23Refactor new reno congestion control logic out of sender.Bhasker Hariharan
This CL also puts the congestion control logic behind an interface so that we can easily swap it out for say CUBIC in the future. PiperOrigin-RevId: 205732848 Change-Id: I891cdfd17d4d126b658b5faa0c6bd6083187944b
2018-07-17netstack: update goroutine save / restore safety comments.Zhaozhong Ni
PiperOrigin-RevId: 204930314 Change-Id: Ifc4c41ed28616cd57fafbf7c92e87141a945c41f
2018-07-12netstack: save tcp endpoint accepted channel directly.Zhaozhong Ni
PiperOrigin-RevId: 204356873 Change-Id: I5e2f885f58678e693aae1a69e8bf8084a685af28
2018-07-12netstack: do not defer panicable logic in tcp main loop.Zhaozhong Ni
PiperOrigin-RevId: 204355026 Change-Id: I1a8229879ea3b58aa861a4eb4456fd7aff99863d
2018-07-11Automated rollback of changelist 203157739Bhasker Hariharan
PiperOrigin-RevId: 204196916 Change-Id: If632750fc6368acb835e22cfcee0ae55c8a04d16
2018-07-10netstack: only do connected TCP S/R for loopback connections.Zhaozhong Ni
PiperOrigin-RevId: 204006237 Change-Id: Ica8402ab54d9dd7d11cc41c6d74aacef51d140b7
2018-07-10Internal changeMichael Pratt
PiperOrigin-RevId: 203997995 Change-Id: I8974fe74f1582bc9b2622f18a4bc4ab47ff5d622
2018-07-10netstack: tcp socket connected state S/R support.Zhaozhong Ni
PiperOrigin-RevId: 203958972 Change-Id: Ia6fe16547539296d48e2c6731edacdd96bd6e93c
2018-07-09Notify UDP and Ping endpoints on closeIan Gudger
PiperOrigin-RevId: 203883138 Change-Id: I7500c0a70f5d71c3fb37e2477f7fc466fa92fd3e
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