selftests: net: add passive TFO test binary

Add a simple passive TFO server and client test binary. This will be
used to test the SO_INCOMING_NAPI_ID of passive TFO accepted sockets.

Signed-off-by: David Wei <dw@davidwei.uk>
Link: https://patch.msgid.link/20250617212102.175711-3-dw@davidwei.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
David Wei 2025-06-17 14:21:00 -07:00 • committed by Jakub Kicinski
commit c65b5bb232
3 changed files with 173 additions and 0 deletions