selftests: drv-net: replace the rpath helper with Path objects

The single letter + "path" helpers do not have many fans (see Link).
Use a Path object with a better name. test_dir is the replacement
for rpath(), net_lib_dir is a new path of the $ksft/net/lib directory.

The Path() class overloads the "/" operator and can be cast to string
automatically, so to get a path to a file tests can do:

    path = env.test_dir / "binary"

Link: https://lore.kernel.org/CA+FuTSemTNVZ5MxXkq8T9P=DYm=nSXcJnL7CJBPZNAT_9UFisQ@mail.gmail.com
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250327222315.1098596-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/tools/testing/selftests/drivers/net/hw/irq.py b/tools/testing/selftests/drivers/net/hw/irq.py
index 42ab98370245..d772a18d8a1b 100755
--- a/tools/testing/selftests/drivers/net/hw/irq.py
+++ b/tools/testing/selftests/drivers/net/hw/irq.py
@@ -69,7 +69,7 @@ def check_reconfig_queues(cfg) -> None:
 def check_reconfig_xdp(cfg) -> None:
     def reconfig(cfg) -> None:
         ip(f"link set dev %s xdp obj %s sec xdp" %
-            (cfg.ifname, cfg.rpath("xdp_dummy.bpf.o")))
+           (cfg.ifname, cfg.test_dir / "xdp_dummy.bpf.o"))
         ip(f"link set dev %s xdp off" % cfg.ifname)
 
     _check_reconfig(cfg, reconfig)