selftests/bpf: Add lwt_xmit tests for BPF_REROUTE

Browse source

There is no lwt test case for BPF_REROUTE yet. Add test cases for both
normal and abnormal situations. The abnormal situation is set up with an
fq qdisc on the reroute target device. Without proper fixes, overflow
this qdisc queue limit (to trigger a drop) would panic the kernel.

Signed-off-by: Yan Zhai <yan@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/62c8ddc1e924269dcf80d2e8af1a1e632cee0b3a.1692326837.git.yan@cloudflare.com

...

This commit is contained in:

Yan Zhai 2023-08-17 19:58:18 -07:00 • committed by Daniel Borkmann

parent 43a7c3ef8a

commit 6c77997bc6

3 changed files with 299 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

1

tools/testing/selftests/bpf/config

View file

262

tools/testing/selftests/bpf/prog_tests/lwt_reroute.c

View file

36

tools/testing/selftests/bpf/progs/test_lwt_reroute.c

View file