From: Jakub Kicinski <kuba@kernel.org>
Date: Wed, 18 Mar 2026 03:38:14 +0000 (-0700)
Subject: selftests: net: move gro to lib for HW vs SW reuse
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8888bf4fb98057a93f3ac7392aa3913e1b318c86;p=thirdparty%2Flinux.git

selftests: net: move gro to lib for HW vs SW reuse

The gro.c packet sender is used for SW testing but bulk of incoming
new tests will be HW-specific. So it's better to put them under
drivers/net/hw/, to avoid tip-toeing around netdevsim. Move gro.c
to lib so we can reuse it.

Reviewed-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20260318033819.1469350-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---

diff --git a/tools/testing/selftests/drivers/net/.gitignore b/tools/testing/selftests/drivers/net/.gitignore
index 3633c7a3ed659..585ecb4d5dc42 100644
--- a/tools/testing/selftests/drivers/net/.gitignore
+++ b/tools/testing/selftests/drivers/net/.gitignore
@@ -1,4 +1,3 @@
 # SPDX-License-Identifier: GPL-2.0-only
-gro
 napi_id_helper
 psp_responder
diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile
index 8154d6d429d3f..7c7fa75b80c2b 100644
--- a/tools/testing/selftests/drivers/net/Makefile
+++ b/tools/testing/selftests/drivers/net/Makefile
@@ -6,7 +6,6 @@ TEST_INCLUDES := $(wildcard lib/py/*.py) \
 		 ../../net/lib.sh \
 
 TEST_GEN_FILES := \
-	gro \
 	napi_id_helper \
 # end of TEST_GEN_FILES
 
diff --git a/tools/testing/selftests/drivers/net/gro.py b/tools/testing/selftests/drivers/net/gro.py
index cbc1b19dbc910..2da53686354f1 100755
--- a/tools/testing/selftests/drivers/net/gro.py
+++ b/tools/testing/selftests/drivers/net/gro.py
@@ -117,7 +117,7 @@ def _setup(cfg, mode, test_name):
     """ Setup hardware loopback mode for GRO testing. """
 
     if not hasattr(cfg, "bin_remote"):
-        cfg.bin_local = cfg.test_dir / "gro"
+        cfg.bin_local = cfg.net_lib_dir / "gro"
         cfg.bin_remote = cfg.remote.deploy(cfg.bin_local)
 
     if not hasattr(cfg, "feat"):
diff --git a/tools/testing/selftests/net/lib/.gitignore b/tools/testing/selftests/net/lib/.gitignore
index bbc97d6bf5564..6cd2b762af5d5 100644
--- a/tools/testing/selftests/net/lib/.gitignore
+++ b/tools/testing/selftests/net/lib/.gitignore
@@ -1,3 +1,4 @@
 # SPDX-License-Identifier: GPL-2.0-only
 csum
+gro
 xdp_helper
diff --git a/tools/testing/selftests/net/lib/Makefile b/tools/testing/selftests/net/lib/Makefile
index 5339f56329e15..ff83603397d06 100644
--- a/tools/testing/selftests/net/lib/Makefile
+++ b/tools/testing/selftests/net/lib/Makefile
@@ -14,6 +14,7 @@ TEST_FILES := \
 TEST_GEN_FILES := \
 	$(patsubst %.c,%.o,$(wildcard *.bpf.c)) \
 	csum \
+	gro \
 	xdp_helper \
 # end of TEST_GEN_FILES
 
diff --git a/tools/testing/selftests/drivers/net/gro.c b/tools/testing/selftests/net/lib/gro.c
similarity index 99%
rename from tools/testing/selftests/drivers/net/gro.c
rename to tools/testing/selftests/net/lib/gro.c
index 3c0745b68bfaa..02e29509fbeab 100644
--- a/tools/testing/selftests/drivers/net/gro.c
+++ b/tools/testing/selftests/net/lib/gro.c
@@ -77,7 +77,7 @@
 #include <unistd.h>
 
 #include "kselftest.h"
-#include "../../net/lib/ksft.h"
+#include "ksft.h"
 
 #define DPORT 8000
 #define SPORT 1500