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2021-02-01Merge release-20210125.0-47-gebd3912c0 (automated)gVisor bot
2021-02-01Merge release-20210125.0-46-gcbcebfea8 (automated)gVisor bot
2021-02-01Refactor HandleControlPacket/SockErrorGhanan Gowripalan
...to remove the need for the transport layer to deduce the type of error it received. Rename HandleControlPacket to HandleError as HandleControlPacket only handles errors. tcpip.SockError now holds a tcpip.SockErrorCause interface that different errors can implement. PiperOrigin-RevId: 354994306
2021-02-01[infra] Fix gazelle target.Ayush Ranjan
PiperOrigin-RevId: 354991724
2021-02-01Merge release-20210125.0-45-g726100f8e (automated)gVisor bot
2021-02-01Assert expected size before unmarshallingTamir Duberstein
...to prevent panicking in case of failure. PiperOrigin-RevId: 354970257
2021-02-01Merge release-20210125.0-44-gd930def27 (automated)gVisor bot
2021-01-31Default to NUD/neighborCache instead of linkAddrCacheGhanan Gowripalan
This change flips gvisor to use Neighbor unreachability detection by default to populate the neighbor table as defined by RFC 4861 section 7. Although RFC 4861 is targeted at IPv6, the same algorithm is used for link resolution on IPv4 networks using ARP. Integrators may still use the legacy link address cache by setting stack.Options.UseLinkAddrCache to true; stack.Options.UseNeighborCache is now unused and will be removed. A later change will remove linkAddrCache and associated code. Updates #4658. PiperOrigin-RevId: 354850531
2021-01-31Merge release-20210125.0-43-gc5e3c1c7b (automated)gVisor bot
2021-01-31Use closure for IPv6 testContext cleanupGhanan Gowripalan
PiperOrigin-RevId: 354827491
2021-01-31Merge release-20210125.0-42-gb4f8a9252 (automated)gVisor bot
2021-01-31Remove NICs before closing their link endpointsGhanan Gowripalan
...in IPv6 ICMP tests. A channel link endpoint's channel is closed when the link endpoint is closed. When the stack tries to send packets through a NIC with a closed channel endpoint, a panic will occur when attempting to write to a closed channel (https://golang.org/ref/spec#Close). To make sure the stack does not try to send packets through a NIC, we remove it. PiperOrigin-RevId: 354822085
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-20210125.0-38-gccf9138e6 (automated)gVisor bot
2021-01-30Remove side effect from open testsFabricio Voznika
Individual test cases must not rely on being executed in a clean environment. PiperOrigin-RevId: 354730126
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-20210125.0-34-g66aa6f3d4 (automated)gVisor bot
2021-01-29setgid directory syscall testsKevin Krakauer
PiperOrigin-RevId: 354615220
2021-01-29Merge release-20210125.0-33-gfdbfd447a (automated)gVisor bot
2021-01-29Merge release-20210125.0-32-g5e2edfb87 (automated)gVisor bot
2021-01-29Remove side effect from test casesFabricio Voznika
Individual test cases must not rely on being executed in a clean environment. PiperOrigin-RevId: 354604389
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-20210125.0-31-g0a52b6479 (automated)gVisor bot
2021-01-29- Add more comments for the TCP_INFO struct fields.Nayana Bidari
PiperOrigin-RevId: 354595623
2021-01-29Merge release-20210125.0-30-g0fa534f11 (automated)gVisor bot
2021-01-29Fix deadlock in specialFileFD.pwriteFabricio Voznika
When file is regular and metadata cache is authoritative, metadata lock is taken. The code deadlocks trying to acquire the metadata lock again to update time stampts. PiperOrigin-RevId: 354584594
2021-01-29Merge release-20210125.0-29-g25284ae3c (automated)gVisor bot
2021-01-29Merge pull request #4503 from dqminh:nested-cgroupgVisor bot
PiperOrigin-RevId: 354568091
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-20210125.0-22-g9cc2570ea (automated)gVisor bot
2021-01-28Change EXPECT/ASSERT to TEST_CHECK inside InForkedProcessFabricio Voznika
PiperOrigin-RevId: 354441239
2021-01-29Merge release-20210125.0-21-g8d1afb418 (automated)gVisor bot
2021-01-29Merge release-20210125.0-20-gc99e092a3 (automated)gVisor bot