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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
2018-07-09Fix two race conditions in tcp stack.Brian Geffon
PiperOrigin-RevId: 203880278 Change-Id: I66b790a616de59142859cc12db4781b57ea626d3
2018-07-09Switch netstack licenses to Apache 2.0.Nicolas Lacasse
Fixes #27 PiperOrigin-RevId: 203825288 Change-Id: Ie9f3a2b2c1e296b026b024f75c07da1a7e118633
2018-07-06Add non-AMD64 support to rawfileIan Gudger
PiperOrigin-RevId: 203499064 Change-Id: I2cd5189638e94ce926f1e82c1264a8d3ece9dfa5
2018-07-03Resend 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: 203157739 Change-Id: I31c9f7c501e3f55007f25e1852c27893a16ac6c4
2018-06-29Panic in netstack during cleanup where a FIN becomes a RST.Brian Geffon
There is a subtle bug where during cleanup with unread data a FIN can be converted to a RST, at that point the entire connection should be aborted as we're not expecting any ACKs to the RST. PiperOrigin-RevId: 202691271 Change-Id: Idae70800208ca26e07a379bc6b2b8090805d0a22
2018-06-26Fix data races in Unix socketsIan Gudger
PiperOrigin-RevId: 202175558 Change-Id: I0113cb9a90d7a0cd7964bf43eef67f70c92d9589
2018-06-26Automated rollback of changelist 201596247Brian Geffon
PiperOrigin-RevId: 202151720 Change-Id: I0491172c436bbb32b977f557953ba0bc41cfe299
2018-06-21netstack: tcp socket connected state S/R support.Zhaozhong Ni
PiperOrigin-RevId: 201596247 Change-Id: Id22f47b2cdcbe14aa0d930f7807ba75f91a56724
2018-06-15Replace crypto/rand with internal rand packageMichael Pratt
PiperOrigin-RevId: 200784607 Change-Id: I39aa6ee632936dcbb00fc298adccffa606e9f4c0
2018-06-08Add a protocol option to set congestion control algorithm.Bhasker Hariharan
Also adds support to query available congestion control algorithms. PiperOrigin-RevId: 199826897 Change-Id: I2b338b709820ee9cf58bb56d83aa7b1a39f4eab2
2018-06-05netstack: make TCP endpoint closed and error state cleanup work synchronous.Zhaozhong Ni
So that when saving TCP endpoint in these states, there is no pending or background activities. Also lift tcp network save rejection error to tcpip package. PiperOrigin-RevId: 199370748 Change-Id: Ief7b45c2a7338d12414cd7c23db95de6a9c22700
2018-05-29Automated rollback of changelist 196886839Fabricio Voznika
PiperOrigin-RevId: 198457660 Change-Id: I6ea5cf0b4cfe2b5ba455325a7e5299880e5a088a
2018-05-24Poll should wake up on ECONNREFUSED with no mask.Brian Geffon
Today poll will not wake up on a ECONNREFUSED if no poll mask is specified, which is equivalent to POLLHUP | POLLERR which are implicitly added during the poll syscall. PiperOrigin-RevId: 197967183 Change-Id: I668d0730c33701228913f2d0843b48491b642efb
2018-05-23Adding test case for RST acceptable ack panicBrian Geffon
PiperOrigin-RevId: 197795613 Change-Id: I759dd04995d900cba6b984649fa48bbc880946d6
2018-05-23Fix typo in TCP transportIan Gudger
PiperOrigin-RevId: 197789418 Change-Id: I86b1574c8d3b8b321348d9b101ffaef7aa15f722
2018-05-22When sending a RST the acceptable ACK window shouldn't change.Brian Geffon
Today when we transmit a RST it's happening during the time-wait flow. Because a FIN is allowed to advance the acceptable ACK window we're incorrectly doing that for a RST. PiperOrigin-RevId: 197637565 Change-Id: I080190b06bd0225326cd68c1fbf37bd3fdbd414e
2018-05-22sentry: Add simple SIOCGIFFLAGS support (IFF_RUNNING and IFF_PROMIS).Kevin Krakauer
Establishes a way of communicating interface flags between netstack and epsocket. More flags can be added over time. PiperOrigin-RevId: 197616669 Change-Id: I230448c5fb5b7d2e8d69b41a451eb4e1096a0e30
2018-05-17Fix sendto for dual stack UDP socketsIan Gudger
Previously, dual stack UDP sockets bound to an IPv4 address could not use sendto to communicate with IPv4 addresses. Further, dual stack UDP sockets bound to an IPv6 address could use sendto to communicate with IPv4 addresses. Neither of these behaviors are consistent with Linux. PiperOrigin-RevId: 197036024 Change-Id: Ic3713efc569f26196e35bb41e6ad63f23675fc90
2018-05-16netstack: make TCP endpoint closed and error state cleanup work synchronous.Zhaozhong Ni
So that when saving TCP endpoint in these states, there is no pending or background activities. Also lift tcp network save rejection error to tcpip package. PiperOrigin-RevId: 196886839 Change-Id: I0fe73750f2743ec7e62d139eb2cec758c5dd6698
2018-05-16Release mutex in BidirectionalConnect to avoid deadlock.Brian Geffon
When doing a BidirectionalConnect we don't need to continue holding the ConnectingEndpoint's mutex when creating the NewConnectedEndpoint as it was held during the Connect. Additionally, we're not holding the baseEndpoint mutex while Unregistering an event. PiperOrigin-RevId: 196875557 Change-Id: Ied4ceed89de883121c6cba81bc62aa3a8549b1e9
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