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As PCALIGN is available on golang asm for arm64.
https://golang.org/pkg/cmd/internal/obj/arm64/
No need to use rewriteVectors() to ensure
alignment of exception vector.
Signed-off-by: Howard Zhang <howard.zhang@arm.com>
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Closes #4746
PiperOrigin-RevId: 342747165
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- Make AddressableEndpoint optional for NetworkEndpoint.
Not all NetworkEndpoints need to support addressing (e.g. ARP), so
AddressableEndpoint should only be implemented for protocols that
support addressing such as IPv4 and IPv6.
With this change, tcpip.ErrNotSupported will be returned by the stack
when attempting to modify addresses on a network endpoint that does
not support addressing.
Now that packets are fully handled at the network layer, and (with this
change) addresses are optional for network endpoints, we no longer need
the workaround for ARP where a fake ARP address was added to each NIC
that performs ARP so that packets would be delivered to the ARP layer.
PiperOrigin-RevId: 342722547
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Updates #4427
PiperOrigin-RevId: 342703931
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- Pass a PacketBuffer directly instead of releaseCB
- No longer pass a VectorisedView, which is included in the PacketBuffer
- Make it an error if data size is not equal to (last - first + 1)
- Set the callback for the reassembly timeout on NewFragmentation
PiperOrigin-RevId: 342702432
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PiperOrigin-RevId: 342700744
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PiperOrigin-RevId: 342669574
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PiperOrigin-RevId: 342662753
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PiperOrigin-RevId: 342577869
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PiperOrigin-RevId: 342373580
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PiperOrigin-RevId: 342366891
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Checks in Task.block() and Task.Value() are conditional on race detection being
enabled, since these functions are relatively hot. Checks in Task.SleepStart()
and Task.UninterruptibleSleepStart() are enabled unconditionally, since these
functions are not thought to lie on any critical paths, and misuse of these
functions is required for b/168241471 to manifest.
PiperOrigin-RevId: 342342175
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This is actually just b/168751672 again; cl/332394146 was incorrectly reverted
by cl/341411151. Document the reference holder to reduce the likelihood that
this happens again.
Also document a few other bugs observed in the process.
PiperOrigin-RevId: 342339144
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Detect if the ACK is a duplicate and update in RACK.
PiperOrigin-RevId: 342332569
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If the packet must no longer be forwarded because its TTL/Hop Limit
reaches 0, send an ICMP Time Exceeded error to the source.
Required as per relevant RFCs. See comments in code for RFC references.
Fixes #1085
Tests:
- ipv4_test.TestForwarding
- ipv6.TestForwarding
PiperOrigin-RevId: 342323610
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PiperOrigin-RevId: 342314586
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The current implementation of loss recovery algorithms SACK and NewReno are in
the same file(snd.go). The functions have multiple checks to see which one is
currently used by the endpoint. This CL will refactor and separate the
implementation of existing recovery algorithms which will help us to implement
new recovery algorithms(such as RACK) with less changes to the existing code.
There is no change in the behavior.
PiperOrigin-RevId: 342312166
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PiperOrigin-RevId: 342297902
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- Don't close fdchannel.Endpoint.sockfd in Shutdown(), while it still may be in
use.
- Don't call runtime.enter/exitsyscall from RecvFDNonblock().
PiperOrigin-RevId: 342221770
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PiperOrigin-RevId: 342221309
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PiperOrigin-RevId: 342214859
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Increase the wait time for the thread to be blocked on read/write
syscall.
PiperOrigin-RevId: 342204627
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Store all the socket level options in a struct and call {Get/Set}SockOpt on
this struct. This will avoid implementing socket level options on all
endpoints. This CL contains implementing one socket level option for tcp and
udp endpoints.
PiperOrigin-RevId: 342203981
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PiperOrigin-RevId: 342179912
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- Add log statements in service entry points.
- Propagate `-debug` flag from shim invokation to the service
- Load options when shim process is invoked to ensure runsc commands
use the correct set of options, e.g. --debug --debug-logs=...
- Add debug options to the shim configuration directly, so it doesn't
rely on containerd configuration (and restart) to enable shim debug.
- Save shim logs to dedicated file, so it's easier to read logs. They
would be mixed with containerd logs and hard to distinguish
otherwise.
PiperOrigin-RevId: 342179868
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RELNOTES: n/a
PiperOrigin-RevId: 342176296
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kernel.Task can only be used as context.Context by that Task's task goroutine.
This is violated in at least two places:
- In any case where one thread accesses the /proc/[tid] of any other thread,
passing the kernel.Task for [tid] as the context.Context is incorrect.
- Task.rebuildTraceContext() may be called by Kernel.RebuildTraceContexts()
outside the scope of any task goroutine.
Fix these (as well as a data race on Task.traceContext discovered during the
course of finding the latter).
PiperOrigin-RevId: 342174404
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children names map can be used to verify whether a child is expected
during walking, so that we can detect unexpected modifications that
deleted/renamed both the target file and the corresponding merkle tree
file.
PiperOrigin-RevId: 342170715
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Add a unit test for ipv4.Encode and a round trip test.
PiperOrigin-RevId: 342169517
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Updates #1035
PiperOrigin-RevId: 342168926
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This reduces confusion with context.Context (which is also relevant to
kernel.Tasks) and is consistent with existing function kernel.LoadTaskImage().
PiperOrigin-RevId: 342167298
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The NIC should not hold network-layer state or logic - network packet
handling/forwarding should be performed at the network layer instead
of the NIC.
Fixes #4688
PiperOrigin-RevId: 342166985
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PiperOrigin-RevId: 342161204
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This causes some networking related tests to take a very long time.
Upon failure, tests can be manually run with debug flags to debug. As is the
strace logs are not available from a test run.
PiperOrigin-RevId: 342156294
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Separate the test cases from TestVerify so that the test names reflect
the test case better.
PiperOrigin-RevId: 342152754
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PiperOrigin-RevId: 341982672
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Fixes #1486.
PiperOrigin-RevId: 341966640
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Most packets don't have options but they are an integral part of the
standard. Teaching the ipv4 code how to handle them will simplify future
testing and use. Because Options are so rare it is worth making sure
that the extra work is kept out of the fast path as much as possible.
Prior to this change, all usages of the IHL field of the IPv4Fields/Encode
system set it to the same constant value except in a couple of tests
for bad values. From this change IHL will not be a constant as it will
depend on the size of any Options. Since ipv4.Encode() now handles the
options it becomes a possible source of errors to let the callers set
this value, so remove it entirely and calculate the value from the size
of the Options if present (or not) therefore guaranteeing a correct value.
Fixes #4709
RELNOTES: n/a
PiperOrigin-RevId: 341864765
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PiperOrigin-RevId: 341757694
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PiperOrigin-RevId: 341732791
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PiperOrigin-RevId: 341667792
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PiperOrigin-RevId: 341660511
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May help with debugging
https://syzkaller.appspot.com/bug?id=0d717bd7028dceeb4b38f09aab2841c398b41d81
PiperOrigin-RevId: 341640485
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Teach ICMP.Parser/ToBytes to handle some non echo ICMP packets.
Teach IPv4.Parser that fragments only have a payload, not an upper layer.
Fix IPv4 and IPv6 reassembly tests to handle the change.
Fixes #4758
PiperOrigin-RevId: 341549665
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PiperOrigin-RevId: 341531230
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This Notify was added as part of cl/279106406; but notifying `EventHUp`
in `FIN_WAIT2` is incorrect, as we want to only notify later on
`TIME_WAIT` or a reset. However, we do need to notify any blocked
waiters of an activity on the endpoint with `EventIn`|`EventOut`.
PiperOrigin-RevId: 341490913
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cl/340002915 modified the code to return EADDRNOTAVAIL if connect
is called for a localhost address which isn't set.
But actually, Linux returns EADDRNOTAVAIL for ipv6 addresses and ENETUNREACH
for ipv4 addresses.
Updates #4735
PiperOrigin-RevId: 341479129
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PiperOrigin-RevId: 341470647
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This will help to debug:
https://syzkaller.appspot.com/bug?id=0d717bd7028dceeb4b38f09aab2841c398b41d81
PiperOrigin-RevId: 341458715
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PiperOrigin-RevId: 341445910
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