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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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*net.UDPAddr
PacketConn.LocalAddr() already returns *net.UDPAddr correctly.
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PiperOrigin-RevId: 290840370
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Such a stat accounts for all connections that are currently
established and not yet transitioned to close state.
Also fix bug in double increment of CurrentEstablished stat.
Fixes #1579
PiperOrigin-RevId: 290827365
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PiperOrigin-RevId: 290793754
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CERT Advisory CA-96.21 III. Solution advises that devices drop packets which
could not have correctly arrived on the wire, such as receiving a packet where
the source IP address is owned by the device that sent it.
Fixes #1507
PiperOrigin-RevId: 290378240
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It was possible to use this function incorrectly, and its separation
wasn't buying us anything.
PiperOrigin-RevId: 290311100
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If a previously added IPv6 address (statically or via SLAAC) was removed, it
would be left in an expired state waiting to be cleaned up if any references to
it were still held. During this time, the same address could be regenerated via
SLAAC, which should be allowed. This change supports this scenario.
When upgrading an endpoint from temporary or permanentExpired to permanent,
respect the new configuration type (static or SLAAC) and deprecated status,
along with the new PrimaryEndpointBehavior (which was already supported).
Test: stack.TestAutoGenAddrAfterRemoval
PiperOrigin-RevId: 289990168
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This change adds support to send NDP Router Solicitation messages when a NIC
becomes enabled as a host, as per RFC 4861 section 6.3.7.
Note, Router Solicitations will only be sent when the stack has forwarding
disabled.
Tests: Unittests to make sure that the initial Router Solicitations are sent
as configured. The tests also validate the sent Router Solicitations' fields.
PiperOrigin-RevId: 289964095
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The change to introduce worker goroutines can cause the endpoint
to transition to StateError and we should terminate the loop rather
than let the endpoint transition to a CLOSED state as we do
in case the endpoint enters TIME-WAIT/CLOSED. Moving to a closed
state would cause the actual error to not be propagated to
any read() calls etc.
PiperOrigin-RevId: 289923568
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All inbound segments for connections in ESTABLISHED state are delivered to the
endpoint's queue but for every segment delivered we also queue the endpoint for
processing to a selected processor. This ensures that when there are a large
number of connections in ESTABLISHED state the inbound packets are all handled
by a small number of goroutines and significantly reduces the amount of work the
goscheduler has to perform.
We let connections in other states follow the current path where the
endpoint's goroutine directly handles the segments.
Updates #231
PiperOrigin-RevId: 289728325
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PiperOrigin-RevId: 289718534
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Do Source Address Selection when choosing an IPv6 source address as per RFC 6724
section 5 rules 1-3:
1) Prefer same address
2) Prefer appropriate scope
3) Avoid deprecated addresses.
A later change will update Source Address Selection to follow rules 4-8.
Tests:
Rule 1 & 2: stack.TestIPv6SourceAddressSelectionScopeAndSameAddress,
Rule 3: stack.TestAutoGenAddrTimerDeprecation,
stack.TestAutoGenAddrDeprecateFromPI
PiperOrigin-RevId: 289559373
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Fixes #1490
Fixes #1495
PiperOrigin-RevId: 289523250
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PiperOrigin-RevId: 289479774
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PiperOrigin-RevId: 289169518
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CancellableTimer tests were in a timer_test package but lived within the
tcpip directory. This caused issues with go tools.
PiperOrigin-RevId: 289166345
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This is a band-aid fix for now to prevent panics.
PiperOrigin-RevId: 289078453
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* Rename syncutil to sync.
* Add aliases to sync types.
* Replace existing usage of standard library sync package.
This will make it easier to swap out synchronization primitives. For example,
this will allow us to use primitives from github.com/sasha-s/go-deadlock to
check for lock ordering violations.
Updates #1472
PiperOrigin-RevId: 289033387
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PiperOrigin-RevId: 289019953
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Inform the Stack's NDPDispatcher when it receives an NDP Router Advertisement
that updates the available configurations via DHCPv6. The Stack makes sure that
its NDPDispatcher isn't informed unless the avaiable configurations via DHCPv6
for a NIC is updated.
Tests: Test that a Stack's NDPDispatcher is informed when it receives an NDP
Router Advertisement that informs it of new configurations available via DHCPv6.
PiperOrigin-RevId: 289001283
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Internal tools timeout after 60s during tests that are required to pass before
changes can be submitted. Separate out NDP tests into its own package to help
prevent timeouts when testing.
PiperOrigin-RevId: 288990597
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This makes it possible to call the sockopt from go even when the NIC has no
name.
PiperOrigin-RevId: 288955236
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...retrievable later via stack.NICInfo().
Clients of this library can use it to add metadata that should be tracked
alongside a NIC, to avoid having to keep a map[tcpip.NICID]metadata mirroring
stack.Stack's nic map.
PiperOrigin-RevId: 288924900
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