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2021-01-31Merge release-20210125.0-41-g4ee8cf873 (automated)gVisor bot
2021-01-31Use different neighbor tables per network endpointGhanan Gowripalan
This stores each protocol's neighbor state separately. This change also removes the need for each neighbor entry to keep track of their own link address resolver now that all the entries in a cache will use the same resolver. PiperOrigin-RevId: 354818155
2021-01-31Merge release-20210125.0-40-gdaeb06d2c (automated)gVisor bot
2021-01-31Hide neighbor table kind from NetworkEndpointGhanan Gowripalan
The network endpoint should not need to have logic to handle different kinds of neighbor tables. Network endpoints can let the NIC know about differnt neighbor discovery messages and let the NIC decide which table to update. This allows us to remove the LinkAddressCache interface. PiperOrigin-RevId: 354812584
2021-01-31Merge release-20210125.0-39-g8dda22654 (automated)gVisor bot
2021-01-30Extract route table from Stack lockTamir Duberstein
PiperOrigin-RevId: 354746864
2021-01-30Merge release-20210125.0-37-g2d90bc548 (automated)gVisor bot
2021-01-30Implement LinkAddressResolver on NetworkEndpointsGhanan Gowripalan
This removes the need to provide the link address request with the NIC the request is being performed on since the NetworkEndpoints already have a reference to the NIC. PiperOrigin-RevId: 354721940
2021-01-30Merge release-20210125.0-36-g825c185dc (automated)gVisor bot
2021-01-29Make fragmentation return a reassembled PacketBufferTing-Yu Wang
This allows later decoupling of the backing network buffer implementation. PiperOrigin-RevId: 354643297
2021-01-30Merge release-20210125.0-35-g45fe9fe9c (automated)gVisor bot
2021-01-29Clear IGMPv1 present flag on NIC downGhanan Gowripalan
This is dynamic state that can be re-learned when the NIC comes back up. Test: ipv4_test.TestIgmpV1Present PiperOrigin-RevId: 354630921
2021-01-29Merge release-20210125.0-32-g5e2edfb87 (automated)gVisor bot
2021-01-29Refresh delayed report timers on query messagesGhanan Gowripalan
...as per As per RFC 2236 section 3 page 3 (for IGMPv2) and RFC 2710 section 4 page 5 (for MLDv1). See comments in code for more details. Test: ip_test.TestHandleQuery PiperOrigin-RevId: 354603068
2021-01-29Merge release-20210125.0-26-g71623e406 (automated)gVisor bot
2021-01-29Discard invalid Neighbor AdvertisementsPeter Johnston
...per RFC 4861 s7.1.2. Startblock: has LGTM from sbalana and then add reviewer ghanan PiperOrigin-RevId: 354539026
2021-01-29Merge release-20210125.0-25-gd6a39734c (automated)gVisor bot
2021-01-28Avoid locking when route doesn't require resolutionGhanan Gowripalan
When a route does not need to resolve a remote link address to send a packet, avoid having to obtain the pending packets queue's lock. PiperOrigin-RevId: 354456280
2021-01-29Merge release-20210125.0-24-gff4fc4278 (automated)gVisor bot
2021-01-29Merge release-20210125.0-23-gb81b5883c (automated)gVisor bot
2021-01-28RACK: Update reorder window.Nayana Bidari
After receiving an ACK(cumulative or selective), RACK will update the reorder window which is used as a settling time before marking the packet as lost. This change will add an init function to initialize the variables in RACK and also store the reference to sender in rackControl. The reorder window is calculated as per rfc: https://tools.ietf.org/html/draft-ietf-tcpm-rack-08#section-7.2 Step 4. PiperOrigin-RevId: 354453528
2021-01-28Acquire entry lock with cache lock heldTamir Duberstein
Avoid a race condition in which an entry is acquired while it is being evicted by overlapping the entry lock with the cache lock. PiperOrigin-RevId: 354452639
2021-01-29Merge release-20210125.0-21-g8d1afb418 (automated)gVisor bot
2021-01-28Change tcpip.Error to an interfaceTamir Duberstein
This makes it possible to add data to types that implement tcpip.Error. ErrBadLinkEndpoint is removed as it is unused. PiperOrigin-RevId: 354437314
2021-01-28Do not use clockwork for faketimeGhanan Gowripalan
Clockwork does not support timers being reset/stopped from different goroutines. Our current use of clockwork causes data races and gotsan complains about clockwork. This change uses our own implementation of faketime, avoiding data races. PiperOrigin-RevId: 354428208
2021-01-28Merge release-20210125.0-12-g6012fe9b5 (automated)gVisor bot
2021-01-28Respect SO_BINDTODEVICE in unconnected UDP writesMarina Ciocea
Previously, sending on an unconnected UDP socket would ignore the SO_BINDTODEVICE option. Send on the configured interface when an UDP socket is bound to an interface through setsockop SO_BINDTODEVICE. Add packetimpact tests exercising UDP reads and writes with every combination of bound/unbound, broadcast/multicast/unicast destination, and bound/not-bound to device. PiperOrigin-RevId: 354299670
2021-01-28Merge release-20210125.0-11-gb85b23e50 (automated)gVisor bot
2021-01-27Confirm neighbor reachability with TCP ACKsGhanan Gowripalan
As per RFC 4861 section 7.3.1, A neighbor is considered reachable if the node has recently received a confirmation that packets sent recently to the neighbor were received by its IP layer. Positive confirmation can be gathered in two ways: hints from upper-layer protocols that indicate a connection is making "forward progress", or receipt of a Neighbor Advertisement message that is a response to a Neighbor Solicitation message. This change adds support for TCP to let the IP/link layers know that a neighbor is reachable. Test: integration_test.TestTCPConfirmNeighborReachability PiperOrigin-RevId: 354222833
2021-01-28Merge release-20210125.0-10-g1d22284c1 (automated)gVisor bot
2021-01-27Rename anonymous struct "mu"Tamir Duberstein
This clarifies that there is a lock involved. PiperOrigin-RevId: 354213848
2021-01-28Merge release-20210112.0-104-g99988e45e (automated)gVisor bot
2021-01-28Merge release-20210112.0-103-gcdf49c443 (automated)gVisor bot
2021-01-27Add support for more fields in netstack for TCP_INFONayana Bidari
This CL adds support for the following fields: - RTT, RTTVar, RTO - send congestion window (sndCwnd) and send slow start threshold (sndSsthresh) - congestion control state(CaState) - ReorderSeen PiperOrigin-RevId: 354195361
2021-01-27Move protected fields under anonymous mutexTamir Duberstein
Fixes #5150. PiperOrigin-RevId: 354194385
2021-01-27Merge pull request #4705 from mlevesquedion:fix-cmp-diff-reporting-in-nud-testsgVisor bot
PiperOrigin-RevId: 354187603
2021-01-27Merge release-20210112.0-98-g8e6604474 (automated)gVisor bot
2021-01-26Initialize the send buffer handler in endpoint creation.Nayana Bidari
- This CL will initialize the function handler used for getting the send buffer size limits during endpoint creation and does not require the caller of SetSendBufferSize(..) to know the endpoint type(tcp/udp/..) PiperOrigin-RevId: 353992634
2021-01-26Merge release-20210112.0-97-g8bb7d61bd (automated)gVisor bot
2021-01-26Do not use stack.Route to send NDP NSGhanan Gowripalan
When sending packets through a stack.Route, we attempt to perform link resolution. Neighbor Solicitation messages do not need link resolution to be performed so send the packets out the interface directly instead. PiperOrigin-RevId: 353967435
2021-01-26Merge release-20210112.0-96-gce39f8298 (automated)gVisor bot
2021-01-26Implement error on pointersTamir Duberstein
This improves type-assertion safety. PiperOrigin-RevId: 353931228
2021-01-26Merge release-20210112.0-95-ga90661654 (automated)gVisor bot
2021-01-26Fix couple of potential route leaks.Bhasker Hariharan
connect() can be invoked multiple times on UDP/RAW sockets and in such a case we should release the cached route from the previous connect. Fixes #5359 PiperOrigin-RevId: 353919891
2021-01-26Merge release-20210112.0-92-g9ba24d449 (automated)gVisor bot
2021-01-26Drop nicID from transport endpoint reg/cleanup fnsGhanan Gowripalan
...as it is unused. PiperOrigin-RevId: 353896981
2021-01-26Merge release-20210112.0-90-gdaf0d3f6c (automated)gVisor bot
2021-01-26Move SO_SNDBUF to socketops.Nayana Bidari
This CL moves {S,G}etsockopt of SO_SNDBUF from all endpoints to socketops. For unix sockets, we do not support setting of this option. PiperOrigin-RevId: 353871484
2021-01-26Merge release-20210112.0-88-g3731ebb3f (automated)gVisor bot
2021-01-25Adjust included data size on icmp errorsJulian Elischer
The RFC for icmpv6 specifies that an errant packet should be included in the returned ICMP packet, and that it should include up to the amount needed to fill the minimum MTU (1280 bytes) if possible. The current code included the Link header in that calculation but the RFC is referring to the IP MTU not the link MTU. Some conformance tests check this and report an error agains the stack for this. The full header length shoudl however continue to be used when allocating header space. Make the same change for IPv4 for consistency. Add a test for icmp payload sizing. Test that the included data in an ICMP error packet conforms to the requirements of RFC 972, RFC 4443 section 2.4 and RFC 1812 Section 4.3.2.3. Fixes #5311 PiperOrigin-RevId: 353790203
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