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PiperOrigin-RevId: 300832988
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Previously, SLAAC related state was stored on a per-address basis. This was
sufficient for the simple case of a single SLAAC address per prefix, but
future CLs will introduce temporary addresses which will result in multiple
SLAAC addresses for a prefix. This refactor allows storing multiple addresses
for a prefix in a single SLAAC prefix state.
No behaviour changes - existing tests continue to pass.
PiperOrigin-RevId: 300832812
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When a NIC is removed, attempt to disable the NIC first to cleanup
dynamic state and stop ongoing periodic tasks (e.g. IPv6 router
solicitations, DAD) so that a removed NIC does not attempt to send
packets.
Tests:
- stack_test.TestRemoveUnknownNIC
- stack_test.TestRemoveNIC
- stack_test.TestDADStop
- stack_test.TestCleanupNDPState
- stack_test.TestRouteWithDownNIC
- stack_test.TestStopStartSolicitingRouters
PiperOrigin-RevId: 300805857
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- Don't allocate []*endpointsByNic in transportDemuxer.deliverPacket() unless
actually needed for UDP broadcast/multicast.
- Don't allocate []*endpointsByNic via transportDemuxer.findEndpointLocked()
=> transportDemuxer.findAllEndpointsLocked().
- Skip unnecessary map lookups in transportDemuxer.findEndpointLocked() =>
transportDemuxer.findAllEndpointsLocked() (now iterEndpointsLocked).
For most deliverable packets other than UDP broadcast/multicast packets, this
saves two slice allocations and three map lookups per packet.
PiperOrigin-RevId: 300804135
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LinkEndpoints may expect/assume that the a tcpip.PacketBuffer's Header
has enough capacity for its own headers, as per documentation for
LinkEndpoint.MaxHeaderLength.
Test: stack_test.TestNICForwarding
PiperOrigin-RevId: 300784192
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PiperOrigin-RevId: 300668506
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Mark /pkg/tcpip/adapters/gonet/gonet_test as flaky.
PiperOrigin-RevId: 300609529
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...instead of sorting at various times. Plug a memory leak by setting
removed elements to nil.
PiperOrigin-RevId: 300471087
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PiperOrigin-RevId: 300467253
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Atomically close the endpoint. Before this change, it was possible for
multiple callers to perform duplicate work.
PiperOrigin-RevId: 300462110
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Endpoints which were being terminated in an ERROR state or were moved to CLOSED
by the worker goroutine do not run cleanupLocked() as that should already be run
by the worker termination. But when making that change we made the mistake of
not removing the endpoint from the danglingEndpoints which is normally done in
cleanupLocked().
As a result these endpoints are leaked since a reference is held to them in the
danglingEndpoints array forever till Stack is torn down.
PiperOrigin-RevId: 300438426
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PiperOrigin-RevId: 300362789
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PiperOrigin-RevId: 300308974
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This change also updates where the IP packet buffer is held in an
outbound tcpip.PacketBuffer from Header to Data. This change removes
unncessary copying of the IP packet buffer when forwarding.
Test: stack_test.TestNICForwarding
PiperOrigin-RevId: 300217972
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Fixes #1510
Test:
- stack_test.TestForwardingWithStaticResolver
- stack_test.TestForwardingWithFakeResolver
- stack_test.TestForwardingWithNoResolver
- stack_test.TestForwardingWithFakeResolverPartialTimeout
- stack_test.TestForwardingWithFakeResolverTwoPackets
- stack_test.TestForwardingWithFakeResolverManyPackets
- stack_test.TestForwardingWithFakeResolverManyResolutions
PiperOrigin-RevId: 300182570
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When list elements are removed from a list but not discarded, it becomes
important to invalidate the references they hold to their former
neighbors to prevent memory leaks.
PiperOrigin-RevId: 299412421
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From RFC 793 s3.9 p61 Event Processing:
CLOSE Call during TIME-WAIT: return with "error: connection closing"
Fixes #1603
PiperOrigin-RevId: 299401353
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If the NIC has a valid IPv6 address assigned, use it as the
source address for outgoing NDP Router Solicitation packets.
Test: stack_test.TestRouterSolicitation
PiperOrigin-RevId: 299398763
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Useful for logs to print the string representation of the value
instead of the integer value.
PiperOrigin-RevId: 299356847
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By putting slices into the pool, the slice header escapes. This can be avoided
by not putting the slice header into the pool.
This removes an allocation from the TCP segment send path.
PiperOrigin-RevId: 299215480
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Properly discard segments from the segment heap.
PiperOrigin-RevId: 298704074
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Ensures that all access to TransportEndpointInfo.ID is either:
* In a function ending in a Locked suffix.
* While holding the appropriate mutex.
This primary affects the checkV4Mapped method on affected endpoints, which has
been renamed to checkV4MappedLocked. Also document the method and change its
argument to be a value instead of a pointer which had caused some awkwardness.
This race was possible in the udp and icmp endpoints between Connect and uses
of TransportEndpointInfo.ID including in both itself and Bind.
The tcp endpoint did not suffer from this bug, but benefited from better
documentation.
Updates #357
PiperOrigin-RevId: 298682913
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PiperOrigin-RevId: 298451319
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A deadlock may occur if a write lock on a RWMutex is blocked between
nested read lock attempts as the inner read lock attempt will be
blocked in this scenario.
Example (T1 and T2 are differnt goroutines):
T1: obtain read-lock
T2: attempt write-lock (blocks)
T1: attempt inner/nested read-lock (blocks)
Here we can see that T1 and T2 are deadlocked.
Tests: Existing tests pass.
PiperOrigin-RevId: 298426678
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- Fix review comments.
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