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PiperOrigin-RevId: 348696094
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PiperOrigin-RevId: 348055514
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Introduces the per-socket error queue and the necessary cmsg mechanisms.
PiperOrigin-RevId: 348028508
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PiperOrigin-RevId: 347437786
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SO_OOBINLINE option is set/get as boolean value, which is the same as linux.
As we currently do not support disabling this option, we always return it as
true.
PiperOrigin-RevId: 347413905
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Fixes #5004
PiperOrigin-RevId: 346643745
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Ports the following options:
- TCP_NODELAY
- TCP_CORK
- TCP_QUICKACK
Also deletes the {Get/Set}SockOptBool interface methods from all implementations
PiperOrigin-RevId: 344378824
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We will use SocketOptions for all kinds of options, not just SOL_SOCKET options
because (1) it is consistent with Linux which defines all option variables on
the top level socket struct, (2) avoid code complexity. Appropriate checks
have been added for matching option level to the endpoint type.
Ported the following options to this new utility:
- IP_MULTICAST_LOOP
- IP_RECVTOS
- IPV6_RECVTCLASS
- IP_PKTINFO
- IP_HDRINCL
- IPV6_V6ONLY
Changes in behavior (these are consistent with what Linux does AFAICT):
- Now IP_MULTICAST_LOOP can be set for TCP (earlier it was a noop) but does not
affect the endpoint itself.
- We can now getsockopt IP_HDRINCL (earlier we would get an error).
- Now we return ErrUnknownProtocolOption if SOL_IP or SOL_IPV6 options are used
on unix sockets.
- Now we return ErrUnknownProtocolOption if SOL_IPV6 options are used on non
AF_INET6 endpoints.
This change additionally makes the following modifications:
- Add State() uint32 to commonEndpoint because both tcpip.Endpoint and
transport.Endpoint interfaces have it. It proves to be quite useful.
- Gets rid of SocketOptionsHandler.IsListening(). It was an anomaly as it was
not a handler. It is now implemented on netstack itself.
- Gets rid of tcp.endpoint.EndpointInfo and directly embeds
stack.TransportEndpointInfo. There was an unnecessary level of embedding
which served no purpose.
- Removes some checks dual_stack_test.go that used the errors from
GetSockOptBool(tcpip.V6OnlyOption) to confirm some state. This is not
consistent with the new design and also seemed to be testing the
implementation instead of behavior.
PiperOrigin-RevId: 344354051
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PiperOrigin-RevId: 343217712
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This changes also introduces:
- `SocketOptionsHandler` interface which can be implemented by endpoints to
handle endpoint specific behavior on SetSockOpt. This is analogous to what
Linux does.
- `DefaultSocketOptionsHandler` which is a default implementation of the above.
This is embedded in all endpoints so that we don't have to uselessly
implement empty functions. Endpoints with specific behavior can override the
embedded method by manually defining its own implementation.
PiperOrigin-RevId: 343158301
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PiperOrigin-RevId: 343146856
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This change also makes the following fixes:
- Make SocketOptions use atomic operations instead of having to acquire/drop
locks upon each get/set option.
- Make documentation more consistent.
- Remove tcpip.SocketOptions from socketOpsCommon because it already exists
in transport.Endpoint.
- Refactors get/set socket options tests to be easily extendable.
PiperOrigin-RevId: 343103780
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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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