Age | Commit message (Collapse) | Author |
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Software GSO implementation currently has a complicated code path with
implicit assumptions that all packets to WritePackets carry same Data
and it does this to avoid allocations on the path etc. But this makes it
hard to reuse the WritePackets API.
This change breaks all such assumptions by introducing a new Vectorised
View API ReadToVV which can be used to cleanly split a VV into multiple
independent VVs. Further this change also makes packet buffers linkable
to form an intrusive list. This allows us to get rid of the array of
packet buffers that are passed in the WritePackets API call and replace
it with a list of packet buffers.
While this code does introduce some more allocations in the benchmarks
it doesn't cause any degradation.
Updates #231
PiperOrigin-RevId: 304731742
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As per RFC 6980 section 5, nodes MUST silently ignore NDP messages if
the packet carrying them include an IPv6 Fragmentation Header.
Test: ipv6_test.TestNDPValidation
PiperOrigin-RevId: 304519379
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Tests:
- ipv6_test.TestHopLimitValidation
- ipv6_test.TestRouterAdvertValidation
PiperOrigin-RevId: 304495723
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Timeouts were increased to deflake pkg/tcpip/stack:stack_x_test tests
that depend on timers. Some timeouts used previously were intended for
tests that do not depend on timers, so this change updates those
timeouts to give more time for a timer-based event to occur. This
change also de-parallelizes non-subtests to reduce the number of active
timers.
Test: bazel test //pkg/tcpip/stack:stack_x_test --runs_per_test=500
PiperOrigin-RevId: 304287622
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PiperOrigin-RevId: 304098611
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Enables handling the Hop by Hop and Destination Options extension
headers, but options are not yet supported. All options will be
treated as unknown and their respective action will be followed.
Note, the stack does not yet support sending ICMPv6 error messages in
response to options that cannot be handled/parsed. That will come
in a later change (Issue #2211).
Tests:
- header_test.TestIPv6UnknownExtHdrOption
- header_test.TestIPv6OptionsExtHdrIterErr
- header_test.TestIPv6OptionsExtHdrIter
- ipv6_test.TestReceiveIPv6ExtHdrs
PiperOrigin-RevId: 303433085
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PiperOrigin-RevId: 303212189
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PiperOrigin-RevId: 303208407
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Enables the reassembly of fragmented IPv6 packets and handling of the
Routing extension header with a Segments Left value of 0. Atomic
fragments are handled as described in RFC 6946 to not interfere with
"normal" fragment traffic. No specific routing header type is supported.
Note, the stack does not yet support sending ICMPv6 error messages in
response to IPv6 packets that cannot be handled/parsed. That will come
in a later change (Issue #2211).
Test:
- header_test.TestIPv6RoutingExtHdr
- header_test.TestIPv6FragmentExtHdr
- header_test.TestIPv6ExtHdrIterErr
- header_test.TestIPv6ExtHdrIter
- ipv6_test.TestReceiveIPv6ExtHdrs
- ipv6_test.TestReceiveIPv6Fragments
RELNOTES: n/a
PiperOrigin-RevId: 303189584
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This feature will match UID and GID of the packet creator, for locally
generated packets. This match is only valid in the OUTPUT and POSTROUTING
chains. Forwarded packets do not have any socket associated with them.
Packets from kernel threads do have a socket, but usually no owner.
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PiperOrigin-RevId: 303156734
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- Change receiver of endpoint lookup functions
- Remove unused struct fields and functions in test
- s/%v/%s/ for errors
- Capitalize NIC
https://github.com/golang/go/wiki/CodeReviewComments#initialisms
PiperOrigin-RevId: 303119580
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PiperOrigin-RevId: 302924789
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This allows the link layer endpoints to consistenly hash a TCP
segment to a single underlying queue in case a link layer endpoint
does support multiple underlying queues.
Updates #231
PiperOrigin-RevId: 302760664
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This is a precursor to be being able to build an intrusive list
of PacketBuffers for use in queuing disciplines being implemented.
Updates #2214
PiperOrigin-RevId: 302677662
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PiperOrigin-RevId: 302110328
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PiperOrigin-RevId: 301859066
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Updates #231, #357
PiperOrigin-RevId: 301833669
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workMu is removed and e.mu is now a mutex that supports TryLock. The packet
processing path tries to lock the mutex and if its locked it will just queue the
packet and move on. The endpoint.UnlockUser() will process any backlog of
packets before unlocking the socket.
This simplifies the locking inside tcp endpoints a lot. Further the
endpoint.LockUser() implements spinning as long as the lock is not held by
another syscall goroutine. This ensures low latency as not spinning leads to the
task thread being put to sleep if the lock is held by the packet dispatch
path. This is suboptimal as the lower layer rarely holds the lock for long so
implementing spinning here helps.
If the lock is held by another task goroutine then we just proceed to call
LockUser() and the task could be put to sleep.
The protocol goroutines themselves just call e.mu.Lock() and block if the
lock is currently not available.
Updates #231, #357
PiperOrigin-RevId: 301808349
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This will aid in segment reordering detection.
Updates #691
PiperOrigin-RevId: 301692638
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PiperOrigin-RevId: 301382690
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PiperOrigin-RevId: 301208471
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PiperOrigin-RevId: 301197007
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PiperOrigin-RevId: 301157950
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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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