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PiperOrigin-RevId: 340763455
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The IPv6 reassembly test was also refactored to be easily extended with
more cases.
PiperOrigin-RevId: 339768605
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PiperOrigin-RevId: 339699771
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This makes handling inbound fragmented packets easier, because a fragmented
packet might not have an actual ICMP header but only a payload. After this
change, the ICMPv4 is the last layer you can get because the payload is
embedded in it.
Note that this makes it consistent with the ICMPv6 implementation.
While I'm here, I've also added the Ident and Sequence fields on the ICMPv4
type. Defaults are still zero.
PiperOrigin-RevId: 339577094
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PiperOrigin-RevId: 339476515
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By exposing an ALL_TESTS list in defs.bzl we can make sure all packetimpact
users get to agree on the list of all tests. A defect in this approach is that
we have to keep a list of packetimpact_testbench rules in the BUILD file. An
helper validate_all_tests has been added to help keep BUILD and .bzl files in
sync.
PiperOrigin-RevId: 337411839
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PiperOrigin-RevId: 336350318
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This change also adds support to go_stateify for detecting an appropriate
receiver name, avoiding a large number of false positives.
PiperOrigin-RevId: 335994587
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Most of the IPv4 fragmentation code was moved in the fragmentation
package and it is reused by IPv6 fragmentation.
Test:
- pkg/tcpip/network/ipv4:ipv4_test
- pkg/tcpip/network/ipv6:ipv6_test
- pkg/tcpip/network/fragmentation:fragmentation_test
Fixes #4389
PiperOrigin-RevId: 335714280
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When the socket is set with SO_LINGER and close()'d in the initial state, it
should not linger and return immediately.
PiperOrigin-RevId: 334263149
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segment_queue today has its own standalone limit of MaxUnprocessedSegments but
this can be a problem in UnlockUser() we do not release the lock till there are
segments to be processed. What can happen is as handleSegments dequeues packets
more keep getting queued and we will never release the lock. This can keep
happening even if the receive buffer is full because nothing can read() till we
release the lock.
Further having a separate limit for pending segments makes it harder to track
memory usage etc. Unifying the limits makes it easier to reason about memory in
use and makes the overall buffer behaviour more consistent.
PiperOrigin-RevId: 333508122
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PiperOrigin-RevId: 333400865
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TCP needs to enqueue any send requests arriving when the connection is in
SYN_SENT state. The data should be sent out soon after completion of the
connection handshake.
Fixes #3995
PiperOrigin-RevId: 332482041
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There are two device names on the test net.
- The sniffer/injector device which is always a linux device. Only the
testbench library is interested in this device.
- The device which is on the DUT. It happens to be the same device as
the former if DUT is linux. An individual test might be interested in
this device if the test cares about the device name.
PiperOrigin-RevId: 332112968
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PiperOrigin-RevId: 332097286
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gVisor stack ignores RSTs when in TIME_WAIT which is not the default
Linux behavior. Add a packetimpact test to test the same.
Also update code comments to reflect the rationale for the current
gVisor behavior.
PiperOrigin-RevId: 331629879
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Packetimpact on Fuchsia was formerly using the Linux test device name. This
change fixes that.
PiperOrigin-RevId: 331211518
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PiperOrigin-RevId: 329902747
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blaze test <test_name>_fuchsia_test will run the corresponding packetimpact
test against fuchsia.
PiperOrigin-RevId: 329835290
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On receiving an ACK with unacceptable ACK number, in a closing state,
TCP, needs to reply back with an ACK with correct seq and ack numbers and
remain in same state. This change is as per RFC793 page 37, but with a
difference that it does not apply to ESTABLISHED state, just as in Linux.
Also add more tests to check for OTW sequence number and unacceptable
ack numbers in these states.
Fixes #3785
PiperOrigin-RevId: 329616283
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PiperOrigin-RevId: 329526153
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This prevents setting stale errno on responses.
Also fixes TestDiscardsUDPPacketsWithMcastSourceAddressV6 to use correct
multicast addresses in test.
Fixes #3793
PiperOrigin-RevId: 329391155
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Currently the logs produce
TestOne: packetimpact_test.go:182: listing devices on ... container: process terminated with status: 126
which is not actionable; presumably the `ip` command output is interesting.
PiperOrigin-RevId: 329032105
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Updates #3374
PiperOrigin-RevId: 328378700
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When SO_LINGER option is enabled, the close will not return until all the
queued messages are sent and acknowledged for the socket or linger timeout is
reached. If the option is not set, close will return immediately. This option
is mainly supported for connection oriented protocols such as TCP.
PiperOrigin-RevId: 328350576
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PiperOrigin-RevId: 328157101
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PiperOrigin-RevId: 326733912
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This is a preparatory commit for a larger commit working on
ICMP generation in error cases.
This is removal of technical debt and cleanup in the gvisor code
as part of gvisor issue 2211.
Updates #2211.
PiperOrigin-RevId: 326615389
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PiperOrigin-RevId: 325280924
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PiperOrigin-RevId: 325269275
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Test:
- stack_test.TestJoinLeaveMulticastOnNICEnableDisable
- integration_test.TestIncomingMulticastAndBroadcast
PiperOrigin-RevId: 325185259
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This required minor fixes to the bazel wrapper. The "dut_platform" is
also changed to "native" to line-up with the system call tests and
remove the hard-coded "linux" and "netstack" strings.
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PiperOrigin-RevId: 323773771
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PiperOrigin-RevId: 323553832
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Storing *testing.T on test helper structs is problematic when
subtests are used, because it is possible for nested tests to call
Fatal on parent test, which incorrect terminates the parent test.
For example
func TestOuter(t *testing.T) {
dut := NewDUT(t)
t.Run("first test", func(t *testing.T) {
dut.FallibleCall()
})
t.Run("second test", func(t *testing.T) {
dut.FallibleCall()
}
}
In the example above, assuming `FallibleCall` calls `t.Fatal` on the
`t` it holds, if `dut.FallibleCall` fails in "first test", it will
call `Fatal` on the parent `t`, quitting `TestOuter`. This is not a
behavior we want.
PiperOrigin-RevId: 323350241
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Adds profiling with `runsc debug` or pprof to dockerutil. All
targets using dockerutil should now be able to use profiling.
In addition, modifies existing benchmarks to use profiling.
PiperOrigin-RevId: 323298634
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Previously, ICMP destination unreachable datagrams were ignored by TCP
endpoints. This caused connect to hang when an intermediate router
couldn't find a route to the host.
This manifested as a Kokoro error when Docker IPv6 was enabled. The Ruby
image test would try to install the sinatra gem and hang indefinitely
attempting to use an IPv6 address.
Fixes #3079.
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PiperOrigin-RevId: 322265513
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DUT logs will include logs from the posix server and gVisor, which
provides a way to instrument the DUT during test failures.
PiperOrigin-RevId: 321816647
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PiperOrigin-RevId: 321790802
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A packetimpact test for: "A node must be able to accept a fragmented packet
that, after reassembly, is as large as 1500 octets."
PiperOrigin-RevId: 321210729
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Also ironed out all the bugs found on the IPv6 code path that affects socket
bind, send and receive.
PiperOrigin-RevId: 321202653
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PiperOrigin-RevId: 321053634
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PiperOrigin-RevId: 321000340
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These logs include flags passed to packetimpact tests (the Go tests), and test
failure messages.
PiperOrigin-RevId: 320989521
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Moves following to new dockerutil API:
- //test/e2e:integration_test
- //test/image:image_test
- //test/iptables:iptables_test
- //test/root:root_test
- //test/packetimpact:packetimpact_test
PiperOrigin-RevId: 320253118
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RFC 6864 imposes various restrictions on the uniqueness of the IPv4
Identification field for non-atomic datagrams, defined as an IP datagram that
either can be fragmented (DF=0) or is already a fragment (MF=1 or positive
fragment offset). In order to be compliant, the ID field is assigned for all
non-atomic datagrams.
Add a TCP unit test that induces retransmissions and checks that the IPv4
ID field is unique every time. Add basic handling of the IP_MTU_DISCOVER
socket option so that the option can be used to disable PMTU discovery,
effectively setting DF=0. Attempting to set the sockopt to anything other
than disabled will fail because PMTU discovery is currently not implemented,
and the default behavior matches that of disabled.
PiperOrigin-RevId: 320081842
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Currently this test produces an error resembling
tcp_zero_window_probe_retransmit_test.go:92: zero probe came sooner interval 3200179405 probe 4
which is approximately useless.
PiperOrigin-RevId: 319572263
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Before this change, running packetimpact tests produces:
parameter 'direct' must contain a list of elements, and may no longer
accept a depset. The deprecated behavior may be temporarily re-enabled
by setting --incompatible_disable_depset_inputs=false
The positional parameter to depset has been changed to mean `direct`
rather than its previous meaning of `items`. The documentation[0]
explains:
A positional parameter distinct from other parameters for legacy
support.
If --incompatible_disable_depset_items is false, this parameter
serves as the value of items.
If --incompatible_disable_depset_items is true, this parameter
serves as the value of direct.
See the documentation for these parameters for more details.
[0] https://docs.bazel.build/versions/master/skylark/lib/globals.html
PiperOrigin-RevId: 319555138
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The application can choose to initiate a non-blocking connect and
later block on a read, when the endpoint is still in SYN-SENT state.
PiperOrigin-RevId: 319311016
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