Age | Commit message (Collapse) | Author |
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The preferred Copyright holder is "The gVisor Authors".
PiperOrigin-RevId: 291786657
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Fixes #1656
PiperOrigin-RevId: 291777279
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PiperOrigin-RevId: 291774815
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This is to aid later implementation for /dev/net/tun device.
PiperOrigin-RevId: 291746025
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PiperOrigin-RevId: 291745021
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Fixes #1656
PiperOrigin-RevId: 291703760
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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
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PiperOrigin-RevId: 291471892
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PiperOrigin-RevId: 291426657
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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
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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
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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
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This pattern (delete from map when dropping) is also used in epoll.RemoveEntry,
and seems like generally a good idea.
PiperOrigin-RevId: 291268208
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PiperOrigin-RevId: 291249314
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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
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PiperOrigin-RevId: 291041576
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- 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
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PiperOrigin-RevId: 291019296
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PiperOrigin-RevId: 291006713
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*net.UDPAddr
PacketConn.LocalAddr() already returns *net.UDPAddr correctly.
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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
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Updates #231
PiperOrigin-RevId: 290868875
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Updates #231
PiperOrigin-RevId: 290854399
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PiperOrigin-RevId: 290849438
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PiperOrigin-RevId: 290840484
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PiperOrigin-RevId: 290840370
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PiperOrigin-RevId: 290839263
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