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PiperOrigin-RevId: 294271541
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PiperOrigin-RevId: 294265019
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PiperOrigin-RevId: 294257911
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Fixes #1255
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I8614e6f3ee321c2989567e4e712aa8f28cc9db14
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Note that these are only implemented for tmpfs, and other impls will still
return EOPNOTSUPP.
PiperOrigin-RevId: 293899385
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Log 8, 16, and 32 int optvals and dump the memory of other sizes.
Updates #1782
PiperOrigin-RevId: 293889388
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Previously, a DAD event would not be sent if DAD was disabled.
This allows integrators to do some work when an IPv6 address is bound to
a NIC without special logic that checks if DAD is enabled.
Without this change, integrators would need to check if a NIC has DAD
enabled when an address is auto-generated. If DAD is enabled, it would
need to delay the work until the DAD completion event; otherwise, it
would need to do the work in the address auto-generated event handler.
Test: stack_test.TestDADDisabled
PiperOrigin-RevId: 293732914
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Auto-generated link-local addresses should have the same lifecycle hooks
as global SLAAC addresses.
The Stack's NDP dispatcher should be notified when link-local addresses
are auto-generated and invalidated. They should also be removed when a
NIC is disabled (which will be supported in a later change).
Tests:
- stack_test.TestNICAutoGenAddrWithOpaque
- stack_test.TestNICAutoGenAddr
PiperOrigin-RevId: 293706760
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Addresses may be added before a NIC is enabled. Make sure DAD is
performed on the permanent IPv6 addresses when they get enabled.
Test:
- stack_test.TestDoDADWhenNICEnabled
- stack.TestDisabledRxStatsWhenNICDisabled
PiperOrigin-RevId: 293697429
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The types gonet.Conn and gonet.PacketConn were confusingly named as both
implemented net.Conn. Further, gonet.Conn was perhaps unexpectedly
TCP-specific (net.Conn is not). This change renames them to gonet.TCPConn and
gonet.UDPConn.
Renames gonet.NewListener to gonet.ListenTCP and adds a new gonet.NewTCPListner
function to be consistent with both the gonet.DialXxx and gonet.NewXxxConn
functions as well as net.ListenTCP.
Updates #1632
PiperOrigin-RevId: 293671303
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Get the link address for the target of an NDP Neighbor Advertisement
from the NDP Target Link Layer Address option.
Tests:
- ipv6.TestNeighorAdvertisementWithTargetLinkLayerOption
- ipv6.TestNeighorAdvertisementWithInvalidTargetLinkLayerOption
PiperOrigin-RevId: 293632609
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PiperOrigin-RevId: 293617493
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These were out-of-band notes that can help provide additional context
and simplify automated imports.
PiperOrigin-RevId: 293525915
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From RFC 793 s3.9 p58 Event Processing:
If RECEIVE Call arrives in CLOSED state and the user has access to such a
connection, the return should be "error: connection does not exist"
Fixes #1598
PiperOrigin-RevId: 293494287
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PiperOrigin-RevId: 293411655
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PiperOrigin-RevId: 293271055
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PiperOrigin-RevId: 293243342
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Tests 65k connection attempts on common types of sockets to check for port
leaks.
Also fixes a bug where dual-stack sockets wouldn't properly re-queue
segments received while closing.
PiperOrigin-RevId: 293241166
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The timer ID is copied out to the argument.
Fixes #1738
PiperOrigin-RevId: 293210801
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This is failing in Go1.14 due to new checkptr constraints. This version
should avoid hitting this constraints by doing "dangerous" pointer math
less dangerously?
PiperOrigin-RevId: 293205764
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Updates #1035
PiperOrigin-RevId: 293194631
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Updates #1198
Opening host pipes (by spinning in fdpipe) and host sockets is not yet
complete, and will be done in a future CL.
Major differences from VFS1 gofer client (sentry/fs/gofer), with varying levels
of backportability:
- "Cache policies" are replaced by InteropMode, which control the behavior of
timestamps in addition to caching. Under InteropModeExclusive (analogous to
cacheAll) and InteropModeWritethrough (analogous to cacheAllWritethrough),
client timestamps are *not* written back to the server (it is not possible in
9P or Linux for clients to set ctime, so writing back client-authoritative
timestamps results in incoherence between atime/mtime and ctime). Under
InteropModeShared (analogous to cacheRemoteRevalidating), client timestamps
are not used at all (remote filesystem clocks are authoritative). cacheNone
is translated to InteropModeShared + new option
filesystemOptions.specialRegularFiles.
- Under InteropModeShared, "unstable attribute" reloading for permission
checks, lookup, and revalidation are fused, which is feasible in VFS2 since
gofer.filesystem controls path resolution. This results in a ~33% reduction
in RPCs for filesystem operations compared to cacheRemoteRevalidating. For
example, consider stat("/foo/bar/baz") where "/foo/bar/baz" fails
revalidation, resulting in the instantiation of a new dentry:
VFS1 RPCs:
getattr("/") // fs.MountNamespace.FindLink() => fs.Inode.CheckPermission() => gofer.inodeOperations.check() => gofer.inodeOperations.UnstableAttr()
walkgetattr("/", "foo") = fid1 // fs.Dirent.walk() => gofer.session.Revalidate() => gofer.cachePolicy.Revalidate()
clunk(fid1)
getattr("/foo") // CheckPermission
walkgetattr("/foo", "bar") = fid2 // Revalidate
clunk(fid2)
getattr("/foo/bar") // CheckPermission
walkgetattr("/foo/bar", "baz") = fid3 // Revalidate
clunk(fid3)
walkgetattr("/foo/bar", "baz") = fid4 // fs.Dirent.walk() => gofer.inodeOperations.Lookup
getattr("/foo/bar/baz") // linux.stat() => gofer.inodeOperations.UnstableAttr()
VFS2 RPCs:
getattr("/") // gofer.filesystem.walkExistingLocked()
walkgetattr("/", "foo") = fid1 // gofer.filesystem.stepExistingLocked()
clunk(fid1)
// No getattr: walkgetattr already updated metadata for permission check
walkgetattr("/foo", "bar") = fid2
clunk(fid2)
walkgetattr("/foo/bar", "baz") = fid3
// No clunk: fid3 used for new gofer.dentry
// No getattr: walkgetattr already updated metadata for stat()
- gofer.filesystem.unlinkAt() does not require instantiation of a dentry that
represents the file to be deleted. Updates #898.
- gofer.regularFileFD.OnClose() skips Tflushf for regular files under
InteropModeExclusive, as it's nonsensical to request a remote file flush
without flushing locally-buffered writes to that remote file first.
- Symlink targets are cached when InteropModeShared is not in effect.
- p9.QID.Path (which is already required to be unique for each file within a
server, and is accordingly already synthesized from device/inode numbers in
all known gofers) is used as-is for inode numbers, rather than being mapped
along with attr.RDev in the client to yet another synthetic inode number.
- Relevant parts of fsutil.CachingInodeOperations are inlined directly into
gofer package code. This avoids having to duplicate part of its functionality
in fsutil.HostMappable.
PiperOrigin-RevId: 293190213
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Internal pipes are supported similarly to how internal UDS is done.
It is also controlled by the same flag.
Fixes #1102
PiperOrigin-RevId: 293150045
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PiperOrigin-RevId: 293029446
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PiperOrigin-RevId: 292624867
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