Checksum capabilities are logically separate from tcpip header definitions
and operations. It makes sense to extract this logic into its own package.
This is also necessary to avoid circular dependencies with bufferv2.
PiperOrigin-RevId: 473096480
This change has significant performance implications. bufferv2 is reference
counted and pooled, which alleviates heap/GC pressure. Below are the results
from running the iperf benchmark.
HEAD:
BenchmarkIperf/operation.Upload-16 1552 ns/op 46.6GiB total allocations
BenchmarkIperf/operation.Download-16 1114 ns/op 68.6GiB total allocations
w/ change:
BenchmarkIperf/operation.Upload-16 1139 ns/op (-27%) 1.41GiB total allocations (-97%)
BenchmarkIperf/operation.Download-16 753.2 ns/op (-33%) 706MiB total allocations (-99%)
PiperOrigin-RevId: 462453185
...as they are not used in all cases expect in the packet endpoint
which can get the link address directly from the link header.
PiperOrigin-RevId: 424427195
This will enable NAT to be performed on UDP packets that are sent
in response to packets sent by the stack.
This will also enable ICMP errors to be properly NAT-ed in response
to UDP packets (#5916).
Updates #5915.
PiperOrigin-RevId: 398373251
Replaced the current AddAddressWithOptions method with
AddAddressWithProperties which passes all address properties in
a single AddressProperties type. More properties that need to be
configured in the future are expected, so adding a type makes adding
them easier.
PiperOrigin-RevId: 396930729
This change updates the forwarding path to perform the forwarding hook
with iptables so that the filter table is consulted before a packet is
forwarded
Updates #170.
Test: iptables_test.TestForwardingHook
PiperOrigin-RevId: 373702359
...to make it clear to callers that all interfaces are updated with the
forwarding flag and that future NICs will be created with the new
forwarding state.
PiperOrigin-RevId: 373618435
Loopback traffic should be stack-local but gVisor has some clients
that depend on the ability to receive loopback traffic that originated
from outside of the stack. Because of this, we guard this change behind
IP protocol options.
Test: integration_test.TestExternalLoopbackTraffic
PiperOrigin-RevId: 363461242
tcpip integration tests have been flaky lately. They usually run in 20 seconds
and have a 60 seconds timeout. Sometimes they timeout which could be due to
a bug or deadlock. To further investigate it might be helpful to split the
targets and see which test is causing the flake.
Added a new tcpip/tests/utils package to hold all common utilities across all
tests.
PiperOrigin-RevId: 358012936
