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PiperOrigin-RevId: 354327882
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Previously, sending on an unconnected UDP socket would ignore the
SO_BINDTODEVICE option. Send on the configured interface when an UDP socket
is bound to an interface through setsockop SO_BINDTODEVICE.
Add packetimpact tests exercising UDP reads and writes with every combination
of bound/unbound, broadcast/multicast/unicast destination, and bound/not-bound
to device.
PiperOrigin-RevId: 354299670
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As per RFC 4861 section 7.3.1,
A neighbor is considered reachable if the node has recently received
a confirmation that packets sent recently to the neighbor were
received by its IP layer. Positive confirmation can be gathered in
two ways: hints from upper-layer protocols that indicate a connection
is making "forward progress", or receipt of a Neighbor Advertisement
message that is a response to a Neighbor Solicitation message.
This change adds support for TCP to let the IP/link layers know that a
neighbor is reachable.
Test: integration_test.TestTCPConfirmNeighborReachability
PiperOrigin-RevId: 354222833
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This clarifies that there is a lock involved.
PiperOrigin-RevId: 354213848
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This CL adds support for the following fields:
- RTT, RTTVar, RTO
- send congestion window (sndCwnd) and send slow start threshold (sndSsthresh)
- congestion control state(CaState)
- ReorderSeen
PiperOrigin-RevId: 354195361
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Fixes #5150.
PiperOrigin-RevId: 354194385
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PiperOrigin-RevId: 354187603
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PiperOrigin-RevId: 354170726
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Fix the test to rely on more deterministic retransmission interval
computations by skipping the initial probe transmission time as that
can be non-deterministic given arbitrary time taken for the DUT to
receive a send command and initiate a send.
Fixes #5080
PiperOrigin-RevId: 354146256
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- This CL will initialize the function handler used for getting the send
buffer size limits during endpoint creation and does not require the caller of
SetSendBufferSize(..) to know the endpoint type(tcp/udp/..)
PiperOrigin-RevId: 353992634
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When sending packets through a stack.Route, we attempt to perform
link resolution. Neighbor Solicitation messages do not need link
resolution to be performed so send the packets out the interface
directly instead.
PiperOrigin-RevId: 353967435
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This improves type-assertion safety.
PiperOrigin-RevId: 353931228
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connect() can be invoked multiple times on UDP/RAW sockets and in such
a case we should release the cached route from the previous connect.
Fixes #5359
PiperOrigin-RevId: 353919891
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Contrary to the comment on the socket test, the failure was due to an issue
with goferfs rather than kernfs.
PiperOrigin-RevId: 353918021
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This also causes inotify events to be generated when reading files for exec.
This change also requires us to adjust splice+inotify tests due to
discrepancies between gVisor and Linux behavior. Note that these discrepancies
existed before; we just did not exercise them previously. See comment for more
details.
Fixes #5348.
PiperOrigin-RevId: 353907187
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...as it is unused.
PiperOrigin-RevId: 353896981
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If data is sent over a stream socket that will not fit all at once, it will
be sent over multiple packets. SCM Rights should only be sent with the first
packet (see net/unix/af_unix.c:unix_stream_sendmsg in Linux).
Reported-by: syzbot+aa26482e9c4887aff259@syzkaller.appspotmail.com
PiperOrigin-RevId: 353886442
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This CL moves {S,G}etsockopt of SO_SNDBUF from all endpoints to socketops. For
unix sockets, we do not support setting of this option.
PiperOrigin-RevId: 353871484
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IN_CLOSE should only be generated when a file description loses its last
reference; not when a file descriptor is closed.
See fs/file_table.c:__fput.
Updates #5348.
PiperOrigin-RevId: 353810697
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The RFC for icmpv6 specifies that an errant packet should be included
in the returned ICMP packet, and that it should include up to the amount
needed to fill the minimum MTU (1280 bytes) if possible. The current code
included the Link header in that calculation but the RFC is referring
to the IP MTU not the link MTU. Some conformance tests check this and
report an error agains the stack for this.
The full header length shoudl however continue to be used when allocating
header space.
Make the same change for IPv4 for consistency.
Add a test for icmp payload sizing.
Test that the included data in an ICMP error packet conforms to the
requirements of RFC 972, RFC 4443 section 2.4 and RFC 1812 Section 4.3.2.3.
Fixes #5311
PiperOrigin-RevId: 353790203
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The ARP stat NetworkUnreachable was removed, and was replaced by
InterfaceHasNoLocalAddress. No stats are recorded when dealing with an
missing endpoint (ErrNotConnected) (because if there is no endpoint,
there is no valid per-endpoint stats).
PiperOrigin-RevId: 353759462
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PiperOrigin-RevId: 353755271
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PiperOrigin-RevId: 353702265
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PiperOrigin-RevId: 353697719
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Individual test cases must not rely on being executed in a clean environment.
PiperOrigin-RevId: 353684155
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The test was execve itself into `/bin/true`, so the test was
not actually executing.
PiperOrigin-RevId: 353676855
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Rewrite tcp.endpoint.Write to avoid manual locking and unlocking. This should
prevent similar mistakes in the future.
PiperOrigin-RevId: 353675734
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EXPECT*/ASSERT* functions are not async-signal-safe and should not
be called from the function passed to InForkedProcess. However,
these happen accidentally sometimes but do no cause InForkedProcess
to fail.
Detect and notify in such cases.
PiperOrigin-RevId: 353354540
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PiperOrigin-RevId: 353340554
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It previously returned an error but it could only be UnknownNICID. It now
returns a boolean to indicate whether the nic exists or not.
PiperOrigin-RevId: 353337489
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PiperOrigin-RevId: 353336894
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The route resolution callback will be called with a
stack.ResolvedFieldsResult which will hold the route info so callers
can avoid attempting resolution again to check if a previous resolution
attempt succeeded or not.
Test: integration_test.TestRouteResolvedFields
PiperOrigin-RevId: 353319019
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Fixes #5113.
PiperOrigin-RevId: 353313374
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Fixes #1509.
PiperOrigin-RevId: 353295589
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- Added packetimpact tests for RACK.
PiperOrigin-RevId: 353282342
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Atomic operations here significantly slow down gVisor builds with
kcov/coverage enabled. Also mark these functions go:norace to avoid
complaints from the race detector.
PiperOrigin-RevId: 353281865
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PiperOrigin-RevId: 353274135
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abi package is to be used by the Sentry to implement the Linux ABI.
Code dealing with the host should use x/sys/unix.
PiperOrigin-RevId: 353272679
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Updates #5226
PiperOrigin-RevId: 353262133
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The GH Build action has been failing with the error message:
```
--- BUILD -c opt //runsc
tee: /proc/self/fd/2: No such device or address
```
tee /dev/fd/2 seems to be the canonical way of copying stdin to stderr.
So use that instead.
PiperOrigin-RevId: 353259087
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If a network address has a static mapping to a link address, calculate
it in GetLinkAddress.
Test: stack_test.TestStaticGetLinkAddress
PiperOrigin-RevId: 353179616
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We have support for the output interface name, but not for the input
interface name.
This change adds the support for the input interface name, and adds the
test cases for it.
Fixes #5300
PiperOrigin-RevId: 353179389
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- Moves the id to the <tr> tag so that the page aligns properly when using an
anchor.
- Makes the syscall number a link to the anchor.
- Fixes some broken links to syscalls without man pages.
PiperOrigin-RevId: 353159903
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GetLinkAddress's callback will be called immediately with a
stack.LinkResolutionResult which will hold the link address
so no need to also return the link address from the function.
Fixes #5151.
PiperOrigin-RevId: 353157857
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...unless explicitly requested via ResolveWith.
Remove cancelled channels from pending packets as we can use the link
resolution channel in a FIFO to limit the number of maximum pending
resolutions we should queue packets for.
This change also defers starting the goroutine that handles link
resolution completion to when link resolution succeeds, fails or
gets cancelled due to the max number of pending resolutions being
reached.
Fixes #751.
PiperOrigin-RevId: 353130577
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PiperOrigin-RevId: 353118942
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Previously fsgofer was skipping chown call if the uid and gid
were the same as the current user/group. However, when setgid
is set, the group may not be the same as the caller. Instead,
compare the actual uid/gid of the file after it has been
created and change ownership only if needed.
Updates #180
PiperOrigin-RevId: 353118733
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Test: integration_test.TestWritePacketsLinkResolution
Fixes #4458.
PiperOrigin-RevId: 353108826
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fdbased and qdisc layers expect these fields to already be
populated before being reached.
PiperOrigin-RevId: 353099492
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Updates #5273
PiperOrigin-RevId: 353087710
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