summaryrefslogtreecommitdiffstats
path: root/net/wireless/tests/fragmentation.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2026-08-24 08:46:03 -0700
commitcf9610f9116d55c5a66ef9f1faecacabd93a9322 (patch)
tree757a3d280760c654767631cab5ad8af2d86d1848 /net/wireless/tests/fragmentation.c
downloadlinux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.tar.gz
linux-stable-cf9610f9116d55c5a66ef9f1faecacabd93a9322.zip
Merge tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrlgrafted
Pull pin control updates from Linus Walleij: "Core changes: - Use the non-blocking mux_state_try_select() in the generic MUX pin control back-end - Free pin maps on pinctrl_generic_to_map() failure in the core helpers New hardware pin control: - Qualcomm Maili TLMM SoC, PMG1110 PMIC, and Eliza LPASS LPI TLMM SoC (this is for the low power audio, LPASS = Low Power Audio SubSystem portions) - Upboard support on top of the Intel pin controller - Apple T6030 and T6031 support (just compatible strings) - Samsung Exynos 8855 SoC - Mediatek MT6858 SoC - Rockchip RK3308B and RV1106 SoCs - Airoha EN7523 and AN7563 SoCs Improvements: - Qualcomm TLMM GPIOs are unconditionally marked as wakeup capable - Qualcomm improvements on top of the Qualcomm PDC (power domain controller) irqchip improvements from tglx:s tree - Qualcomm IPQ806x and IPQ9650 non-urgent pin grop fixups - The NPCM8xx driver has been put into shape fixing many pin and group definitions - Some non-urgent Tegra 264 pin assignments are fixed up - Some non-urgent fixups to Airoha AN7581 and AN7583 registers and pin assignments, missing features etc" * tag 'pinctrl-v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (130 commits) dt-bindings: pinctrl: Convert TI DA850 pupd to DT schema pinctrl: meson: sync some modify from A4 pinctrl: meson: a4: Add input enable pin configuration pinctrl: realtek: rtd1625: remove unused group name spdif_sel pinctrl: realtek: rtd1625: fix base_bit for VE4 GPIO 13 dt-bindings: pinctrl: microchip,pic32mzda-pinctrl: Convert to DT schema Revert "Merge branch 'ib-rsk7204' into devel" pinctrl: rockchip: Add RV1106 pinctrl support dt-bindings: pinctrl: rockchip: Add RV1106 compatible pinctrl: rockchip: Decode drive strength in the get function pinctrl: fix PINCTRL_GENERIC_MUX not always being selectable pinctrl: airoha: add support of an7563 SoC dt-bindings: pinctrl: airoha: add support of an7563 pin controller pinctrl: airoha: try to find chip scu node by phandle first pinctrl: airoha: add support of en7523 SoC dt-bindings: pinctrl: airoha: add support of en7523 pin controller pinctrl: airoha: an7583: add support for olt pinmux pinctrl: airoha: an7583: add support for pon_alt pinmux pinctrl: airoha: an7583: add support for npu_uart pinmux dt-bindings: pinctrl: airoha: an7583: add missed features ...
Diffstat (limited to 'net/wireless/tests/fragmentation.c')
-rw-r--r--net/wireless/tests/fragmentation.c177
1 files changed, 177 insertions, 0 deletions
diff --git a/net/wireless/tests/fragmentation.c b/net/wireless/tests/fragmentation.c
new file mode 100644
index 000000000..411fae18c
--- /dev/null
+++ b/net/wireless/tests/fragmentation.c
@@ -0,0 +1,177 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * KUnit tests for element fragmentation
+ *
+ * Copyright (C) 2023-2024 Intel Corporation
+ */
+#include <linux/ieee80211.h>
+#include <net/cfg80211.h>
+#include <kunit/test.h>
+
+static void defragment_0(struct kunit *test)
+{
+ ssize_t ret;
+ static const u8 input[] = {
+ [0] = WLAN_EID_EXTENSION,
+ [1] = 254,
+ [2] = WLAN_EID_EXT_EHT_MULTI_LINK,
+ [27] = 27,
+ [123] = 123,
+ [254 + 2] = WLAN_EID_FRAGMENT,
+ [254 + 3] = 7,
+ [254 + 3 + 7] = 0, /* for size */
+ };
+ u8 *data = kunit_kzalloc(test, sizeof(input), GFP_KERNEL);
+
+ KUNIT_ASSERT_NOT_NULL(test, data);
+
+ ret = cfg80211_defragment_element((void *)input,
+ input, sizeof(input),
+ NULL, 0,
+ WLAN_EID_FRAGMENT);
+ KUNIT_EXPECT_EQ(test, ret, 253);
+ ret = cfg80211_defragment_element((void *)input,
+ input, sizeof(input),
+ data, ret,
+ WLAN_EID_FRAGMENT);
+ KUNIT_EXPECT_EQ(test, ret, 253);
+ KUNIT_EXPECT_MEMEQ(test, data, input + 3, 253);
+}
+
+static void defragment_1(struct kunit *test)
+{
+ ssize_t ret;
+ static const u8 input[] = {
+ [0] = WLAN_EID_EXTENSION,
+ [1] = 255,
+ [2] = WLAN_EID_EXT_EHT_MULTI_LINK,
+ [27] = 27,
+ [123] = 123,
+ [255 + 2] = WLAN_EID_FRAGMENT,
+ [255 + 3] = 7,
+ [255 + 3 + 1] = 0xaa,
+ [255 + 3 + 8] = WLAN_EID_FRAGMENT, /* not used */
+ [255 + 3 + 9] = 1,
+ [255 + 3 + 10] = 0, /* for size */
+ };
+ u8 *data = kunit_kzalloc(test, sizeof(input), GFP_KERNEL);
+ const struct element *elem;
+ int count = 0;
+
+ KUNIT_ASSERT_NOT_NULL(test, data);
+
+ for_each_element(elem, input, sizeof(input))
+ count++;
+
+ /* check the elements are right */
+ KUNIT_ASSERT_EQ(test, count, 3);
+
+ ret = cfg80211_defragment_element((void *)input,
+ input, sizeof(input),
+ NULL, 0,
+ WLAN_EID_FRAGMENT);
+ KUNIT_EXPECT_EQ(test, ret, 254 + 7);
+ ret = cfg80211_defragment_element((void *)input,
+ input, sizeof(input),
+ data, ret,
+ WLAN_EID_FRAGMENT);
+ /* this means the last fragment was not used */
+ KUNIT_EXPECT_EQ(test, ret, 254 + 7);
+ KUNIT_EXPECT_MEMEQ(test, data, input + 3, 254);
+ KUNIT_EXPECT_MEMEQ(test, data + 254, input + 255 + 4, 7);
+}
+
+static void defragment_2(struct kunit *test)
+{
+ ssize_t ret;
+ static const u8 input[] = {
+ [0] = WLAN_EID_EXTENSION,
+ [1] = 255,
+ [2] = WLAN_EID_EXT_EHT_MULTI_LINK,
+ [27] = 27,
+ [123] = 123,
+
+ [257 + 0] = WLAN_EID_FRAGMENT,
+ [257 + 1] = 255,
+ [257 + 20] = 0xaa,
+
+ [2 * 257 + 0] = WLAN_EID_FRAGMENT,
+ [2 * 257 + 1] = 1,
+ [2 * 257 + 2] = 0xcc,
+ [2 * 257 + 3] = WLAN_EID_FRAGMENT, /* not used */
+ [2 * 257 + 4] = 1,
+ [2 * 257 + 5] = 0, /* for size */
+ };
+ u8 *data = kunit_kzalloc(test, sizeof(input), GFP_KERNEL);
+ const struct element *elem;
+ int count = 0;
+
+ KUNIT_ASSERT_NOT_NULL(test, data);
+
+ for_each_element(elem, input, sizeof(input))
+ count++;
+
+ /* check the elements are right */
+ KUNIT_ASSERT_EQ(test, count, 4);
+
+ ret = cfg80211_defragment_element((void *)input,
+ input, sizeof(input),
+ NULL, 0,
+ WLAN_EID_FRAGMENT);
+ /* this means the last fragment was not used */
+ KUNIT_EXPECT_EQ(test, ret, 254 + 255 + 1);
+ ret = cfg80211_defragment_element((void *)input,
+ input, sizeof(input),
+ data, ret,
+ WLAN_EID_FRAGMENT);
+ KUNIT_EXPECT_EQ(test, ret, 254 + 255 + 1);
+ KUNIT_EXPECT_MEMEQ(test, data, input + 3, 254);
+ KUNIT_EXPECT_MEMEQ(test, data + 254, input + 257 + 2, 255);
+ KUNIT_EXPECT_MEMEQ(test, data + 254 + 255, input + 2 * 257 + 2, 1);
+}
+
+static void defragment_at_end(struct kunit *test)
+{
+ ssize_t ret;
+ static const u8 input[] = {
+ [0] = WLAN_EID_EXTENSION,
+ [1] = 255,
+ [2] = WLAN_EID_EXT_EHT_MULTI_LINK,
+ [27] = 27,
+ [123] = 123,
+ [255 + 2] = WLAN_EID_FRAGMENT,
+ [255 + 3] = 7,
+ [255 + 3 + 7] = 0, /* for size */
+ };
+ u8 *data = kunit_kzalloc(test, sizeof(input), GFP_KERNEL);
+
+ KUNIT_ASSERT_NOT_NULL(test, data);
+
+ ret = cfg80211_defragment_element((void *)input,
+ input, sizeof(input),
+ NULL, 0,
+ WLAN_EID_FRAGMENT);
+ KUNIT_EXPECT_EQ(test, ret, 254 + 7);
+ ret = cfg80211_defragment_element((void *)input,
+ input, sizeof(input),
+ data, ret,
+ WLAN_EID_FRAGMENT);
+ KUNIT_EXPECT_EQ(test, ret, 254 + 7);
+ KUNIT_EXPECT_MEMEQ(test, data, input + 3, 254);
+ KUNIT_EXPECT_MEMEQ(test, data + 254, input + 255 + 4, 7);
+}
+
+static struct kunit_case element_fragmentation_test_cases[] = {
+ KUNIT_CASE(defragment_0),
+ KUNIT_CASE(defragment_1),
+ KUNIT_CASE(defragment_2),
+ KUNIT_CASE(defragment_at_end),
+ {}
+};
+
+static struct kunit_suite element_fragmentation = {
+ .name = "cfg80211-element-defragmentation",
+ .test_cases = element_fragmentation_test_cases,
+};
+
+kunit_test_suite(element_fragmentation);