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2020-01-28Merge release-20200115.0-111-g253c9e6 (automated)gVisor bot
2020-01-27Cleanup glog and add real caller information.Adin Scannell
In general, we've learned that logging must be avoided at all costs in the hot path. It's unlikely that the optimizations here were significant in any case, since buffer would certainly escape. This also adds a test to ensure that the caller identification works as expected, and so that logging can be benchmarked. Original: BenchmarkGoogleLogging-6 1222255 949 ns/op With this change: BenchmarkGoogleLogging-6 517323 2346 ns/op Fixes #184 PiperOrigin-RevId: 291815420
2020-01-27Merge release-20200115.0-110-g0e2f1b7 (automated)gVisor bot
2020-01-27Merge release-20200115.0-109-g60d7ff7 (automated)gVisor bot
2020-01-27Update package locations.Adin Scannell
Because the abi will depend on the core types for marshalling (usermem, context, safemem, safecopy), these need to be flattened from the sentry directory. These packages contain no sentry-specific details. PiperOrigin-RevId: 291811289
2020-01-27Merge pull request #1676 from majek:marek/FIX-1632-expose-NewPacketConngVisor bot
PiperOrigin-RevId: 291803499
2020-01-27Merge release-20200115.0-107-g90ec596 (automated)gVisor bot
2020-01-27Fix licenses.Adin Scannell
The preferred Copyright holder is "The gVisor Authors". PiperOrigin-RevId: 291786657
2020-01-27Merge release-20200115.0-106-gfbfcfcf (automated)gVisor bot
2020-01-27Update ChecksumVVWithoffset to use unrolled version.Bhasker Hariharan
Fixes #1656 PiperOrigin-RevId: 291777279
2020-01-27Merge release-20200115.0-105-g13c1f38 (automated)gVisor bot
2020-01-27Update bug number for supporting extended attribute namespaces.Dean Deng
PiperOrigin-RevId: 291774815
2020-01-27Merge release-20200115.0-104-g6b14be4 (automated)gVisor bot
2020-01-27Refactor to hide C from channel.Endpoint.Ting-Yu Wang
This is to aid later implementation for /dev/net/tun device. PiperOrigin-RevId: 291746025
2020-01-27Standardize on tools directory.Adin Scannell
PiperOrigin-RevId: 291745021
2020-01-27Expose gonet.NewPacketConn, for parity with gonet.NewConn APIMarek Majkowski
gonet.Conn can be created with both gonet.NewConn and gonet.Dial. gonet.PacketConn was created only by gonet.DialUDP. This prevented us from being able to use PacketConn in udp.NewForwarder() context. This simple constructor - NewPacketConn, allows user to create correct structure from that context.
2020-01-27Merge release-20200115.0-102-g6b43cf7 (automated)gVisor bot
2020-01-27Replace calculateChecksum w/ the unrolled version.Bhasker Hariharan
Fixes #1656 PiperOrigin-RevId: 291703760
2020-01-27Merge release-20200115.0-101-g68514d4 (automated)gVisor bot
2020-01-26Unroll checksum computation loop.Bhasker Hariharan
Checksum computation is one of the most expensive bits of packet processing. Manual unrolling of the loop provides significant improvement in checksum speed. Updates #1656 BenchmarkChecksum/checksum_64-12 49834124 23.6 ns/op BenchmarkChecksum/checksum_128-12 27111997 44.1 ns/op BenchmarkChecksum/checksum_256-12 11416683 91.5 ns/op BenchmarkChecksum/checksum_512-12 6375298 174 ns/op BenchmarkChecksum/checksum_1024-12 3403852 338 ns/op BenchmarkChecksum/checksum_1500-12 2343576 493 ns/op BenchmarkChecksum/checksum_2048-12 1730521 656 ns/op BenchmarkChecksum/checksum_4096-12 920469 1327 ns/op BenchmarkChecksum/checksum_8192-12 445885 2637 ns/op BenchmarkChecksum/checksum_16384-12 226342 5268 ns/op BenchmarkChecksum/checksum_32767-12 114210 10503 ns/op BenchmarkChecksum/checksum_32768-12 99138 10610 ns/op BenchmarkChecksum/checksum_65535-12 53438 21158 ns/op BenchmarkChecksum/checksum_65536-12 52993 21067 ns/op BenchmarkUnrolledChecksum/checksum_64-12 61035639 19.1 ns/op BenchmarkUnrolledChecksum/checksum_128-12 36067015 33.6 ns/op BenchmarkUnrolledChecksum/checksum_256-12 19731220 60.4 ns/op BenchmarkUnrolledChecksum/checksum_512-12 9091291 116 ns/op BenchmarkUnrolledChecksum/checksum_1024-12 4976406 226 ns/op BenchmarkUnrolledChecksum/checksum_1500-12 3685224 328 ns/op BenchmarkUnrolledChecksum/checksum_2048-12 2579108 447 ns/op BenchmarkUnrolledChecksum/checksum_4096-12 1350475 887 ns/op BenchmarkUnrolledChecksum/checksum_8192-12 658248 1780 ns/op BenchmarkUnrolledChecksum/checksum_16384-12 335869 3534 ns/op BenchmarkUnrolledChecksum/checksum_32767-12 168650 7095 ns/op BenchmarkUnrolledChecksum/checksum_32768-12 168075 7098 ns/op BenchmarkUnrolledChecksum/checksum_65535-12 75085 14277 ns/op BenchmarkUnrolledChecksum/checksum_65536-12 75921 14127 ns/op PiperOrigin-RevId: 291643290
2020-01-24Add support for device special files to VFS2 tmpfs.Jamie Liu
PiperOrigin-RevId: 291471892
2020-01-24Merge release-20200115.0-99-g878bda6 (automated)gVisor bot
2020-01-24Lock the NIC when checking if an address is tentativeGhanan Gowripalan
PiperOrigin-RevId: 291426657
2020-01-24Merge release-20200115.0-98-gd135b5a (automated)gVisor bot
2020-01-24Add anonymous device number allocation to VFS2.Jamie Liu
Note that in VFS2, filesystem device numbers are per-vfs.FilesystemImpl rather than global, avoiding the need for a "registry" type to handle save/restore. (This is more consistent with Linux anyway: compare e.g. mm/shmem.c:shmem_mount() => fs/super.c:mount_nodev() => (indirectly) set_anon_super().) PiperOrigin-RevId: 291425193
2020-01-24Increase timeouts for NDP tests' async eventsGhanan Gowripalan
Increase the timeout to 1s when waiting for async NDP events to help reduce flakiness. This will not significantly increase test times as the async events continue to receive an event on a channel. The increased timeout allows more time for an event to be sent on the channel as the previous timeout of 100ms caused some flakes. Test: Existing tests pass PiperOrigin-RevId: 291420936
2020-01-24Merge release-20200115.0-96-g390bb9c (automated)gVisor bot
2020-01-24Ignore external SIGURGMichael Pratt
Go 1.14+ sends SIGURG to Ms to attempt asynchronous preemption of a G. Since it can't guarantee that a SIGURG is only related to preemption, it continues to forward them to signal.Notify (see runtime.sighandler). We should ignore these signals, as applications shouldn't receive them. Note that this means that truly external SIGURG can no longer be sent to the application (as with SIGCHLD). PiperOrigin-RevId: 291415357
2020-01-24Merge release-20200115.0-94-g3db3173 (automated)gVisor bot
2020-01-23Remove epoll entry from map when dropping it.Nicolas Lacasse
This pattern (delete from map when dropping) is also used in epoll.RemoveEntry, and seems like generally a good idea. PiperOrigin-RevId: 291268208
2020-01-23Merge release-20200115.0-93-g3d10edc (automated)gVisor bot
2020-01-23Merge pull request #1617 from kevinGC:iptables-write-filter-protogVisor bot
PiperOrigin-RevId: 291249314
2020-01-23Merge release-20200115.0-81-g7a79715 (automated)gVisor bot
2020-01-23Check for EINTR from KVM_CREATE_VMMichael Pratt
The kernel may return EINTR from: kvm_create_vm kvm_init_mmu_notifier mmu_notifier_register do_mmu_notifier_register mm_take_all_locks Go 1.14's preemptive scheduling signals make hitting this much more likely. PiperOrigin-RevId: 291212669
2020-01-22De-duplicate common test functionality for VFS2 filesystems.Rahat Mahmood
PiperOrigin-RevId: 291041576
2020-01-22Merge release-20200115.0-77-g1d97ada (automated)gVisor bot
2020-01-22Use embedded mutex pattern for stack.NICGhanan Gowripalan
- Wrap NIC's fields that should only be accessed while holding the mutex in an anonymous struct with the embedded mutex. - Make sure NIC's spoofing and promiscuous mode flags are only read while holding the NIC's mutex. - Use the correct endpoint when sending DAD messages. - Do not hold the NIC's lock when sending DAD messages. This change does not introduce any behaviour changes. Tests: Existing tests continue to pass. PiperOrigin-RevId: 291036251
2020-01-22Merge release-20200115.0-74-g0e7f417 (automated)gVisor bot
2020-01-22Merge pull request #1631 from majek:fix-gonet-udp.RemoteAddrgVisor bot
PiperOrigin-RevId: 291019296
2020-01-22Merge release-20200115.0-72-g5ab1213 (automated)gVisor bot
2020-01-22Move VFS2 handling of FD readability/writability to vfs.FileDescription.Jamie Liu
PiperOrigin-RevId: 291006713
2020-01-22Merge release-20200115.0-71-g1599923 (automated)gVisor bot
2020-01-22Address GitHub comments.Kevin Krakauer
2020-01-22gonet PacketConn.RemoteAddr() incorrectly returns *net.TCPAddr, should be ↵Marek Majkowski
*net.UDPAddr PacketConn.LocalAddr() already returns *net.UDPAddr correctly.
2020-01-22Merge release-20200115.0-69-g6a59e7f (automated)gVisor bot
2020-01-21Rename DowngradableRWMutex to RWmutex.Ian Gudger
Also renames TMutex to Mutex. These custom mutexes aren't any worse than the standard library versions (same code), so having both seems redundant. PiperOrigin-RevId: 290873587
2020-01-22Merge release-20200115.0-68-gd0e75f2 (automated)gVisor bot
2020-01-21Add trylock support to DowngradableRWMutex.Ian Gudger
Updates #231 PiperOrigin-RevId: 290868875
2020-01-22Merge release-20200115.0-67-g1effdc0 (automated)gVisor bot
2020-01-21TMutex based on sync.Mutex.Ian Gudger
Updates #231 PiperOrigin-RevId: 290854399