[PATCH net-next v2] selftests: net: add ruff linter exclusions

Fedora is now shipping ruff 0.16 which added a ton of more
opinionated rules. Let's add some exclusions for checks
which are both noisy and IMO of questionable value.
We can still follow them for new code but it's a matter
of preference.

 C401: set(x for x in Y) -> {x for x in Y}

I find the set() a little more readable.

 I001: hard requirements to sort includes

A little too much

 RUF015: list(set_a - set_b)[0] -> next(iter(set_a - set_b))

list + index are more readable to a "C person" for sure.

Reviewed-by: Nicolai Buchwitz <nb@tipi-net.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
---
v2:
 - drop the . in front of the file name
v1: https://lore.kernel.org/20260911213412.3222759-1-kuba@kernel.org

CC: shuah@kernel.org
CC: linux-kselftest@vger.kernel.org
---
 tools/testing/selftests/drivers/net/ruff.toml | 4 ++++
 tools/testing/selftests/net/ruff.toml         | 4 ++++
 2 files changed, 8 insertions(+)
 create mode 100644 tools/testing/selftests/drivers/net/ruff.toml
 create mode 100644 tools/testing/selftests/net/ruff.toml

diff --git a/tools/testing/selftests/drivers/net/ruff.toml b/tools/testing/selftests/drivers/net/ruff.toml
new file mode 100644
index 000000000000..f58d51f35317
--- /dev/null
+++ b/tools/testing/selftests/drivers/net/ruff.toml

@@ -0,0 +1,4 @@
+# NOTE: keep in sync between .../net/ and .../drivers/net/
+
+[lint]
+ignore = ["C401", "I001", "RUF015"]

diff --git a/tools/testing/selftests/net/ruff.toml b/tools/testing/selftests/net/ruff.toml
new file mode 100644
index 000000000000..f58d51f35317
--- /dev/null
+++ b/tools/testing/selftests/net/ruff.toml

@@ -0,0 +1,4 @@
+# NOTE: keep in sync between .../net/ and .../drivers/net/
+
+[lint]
+ignore = ["C401", "I001", "RUF015"]

-- 
2.55.0

Hello:

This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski [off-list ref]:

On Sat, 12 Sep 2026 16:39:26 -0700 you wrote:

Fedora is now shipping ruff 0.16 which added a ton of more
opinionated rules. Let's add some exclusions for checks
which are both noisy and IMO of questionable value.
We can still follow them for new code but it's a matter
of preference.

 C401: set(x for x in Y) -> {x for x in Y}

[...]

Here is the summary with links:
  - [net-next,v2] selftests: net: add ruff linter exclusions
    https://git.kernel.org/netdev/net-next/c/7b37f1109039

You are awesome, thank you!
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