[PATCH v2 0/3] selftests/net: deflake GRO tests and fix return value and output

The GRO selftests can flake and have some confusing behavior. These
changes make the output and return value of GRO behave as expected, then
deflake the tests.

v2:
- Split into multiple commits.
- Reduced napi_defer_hard_irqs to 1.
- Reduced gro_flush_timeout to 100us.
- Fixed comment that wasn't updated.

v1: https://lore.kernel.org/netdev/20250218164555.1955400-1-krakauer@google.com/ (local)

Kevin Krakauer (3):
  selftests/net: have `gro.sh -t` return a correct exit code
  selftests/net: only print passing message in GRO tests when tests pass
  selftests/net: deflake GRO tests

 tools/testing/selftests/net/gro.c         | 8 +++++---
 tools/testing/selftests/net/gro.sh        | 7 ++++---
 tools/testing/selftests/net/setup_veth.sh | 3 ++-
 3 files changed, 11 insertions(+), 7 deletions(-)

-- 
2.48.1.658.g4767266eb4-goog