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This patch adds tests validating that VRF and BPF-LWT
encap work together well, as requested by David Ahern.
Signed-off-by: Peter Oskolkov <posk@google.com>
Acked-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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Add a test on egress that a large TCP packet successfully goes through
the lwt+bpf encap tunnel.
Although there is no direct evidence that GSO worked, as opposed to
e.g. TCP segmentation or IP fragmentation (maybe a kernel stats counter
should be added to track the number of failed GSO attempts?), without
the previous patch in the patchset this test fails, and printk-debugging
showed that software-based GSO succeeded here (veth is not compatible with
SKB_GSO_DODGY, so GSO happens in the software stack).
Also removed an unnecessary nodad and added a missed failed flag.
Signed-off-by: Peter Oskolkov <posk@google.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
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As requested by David Ahern:
- add negative tests (no routes, explicitly unreachable destinations)
to exercize error handling code paths;
- do not exit on test failures, but instead print a summary of
passed/failed tests at the end.
Future patches will add TSO and VRF tests.
Signed-off-by: Peter Oskolkov <posk@google.com>
Reviewed-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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This patch adds a bpf self-test to cover BPF_LWT_ENCAP_IP mode
in bpf_lwt_push_encap.
Covered:
- encapping in LWT_IN and LWT_XMIT
- IPv4 and IPv6
A follow-up patch will add GSO and VRF-enabled tests.
Signed-off-by: Peter Oskolkov <posk@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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