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-rw-r--r--net/wireless/tests/Makefile3
-rw-r--r--net/wireless/tests/fragmentation.c157
-rw-r--r--net/wireless/tests/module.c10
3 files changed, 170 insertions, 0 deletions
diff --git a/net/wireless/tests/Makefile b/net/wireless/tests/Makefile
new file mode 100644
index 0000000000..fa8e297bbc
--- /dev/null
+++ b/net/wireless/tests/Makefile
@@ -0,0 +1,3 @@
+cfg80211-tests-y += module.o fragmentation.o
+
+obj-$(CONFIG_CFG80211_KUNIT_TEST) += cfg80211-tests.o
diff --git a/net/wireless/tests/fragmentation.c b/net/wireless/tests/fragmentation.c
new file mode 100644
index 0000000000..49a339ca88
--- /dev/null
+++ b/net/wireless/tests/fragmentation.c
@@ -0,0 +1,157 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * KUnit tests for element fragmentation
+ *
+ * Copyright (C) 2023 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),
+ data, sizeof(input),
+ 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),
+ data, sizeof(input),
+ 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),
+ data, sizeof(input),
+ WLAN_EID_FRAGMENT);
+ /* this means the last fragment was not used */
+ 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),
+ data, sizeof(input),
+ 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);
diff --git a/net/wireless/tests/module.c b/net/wireless/tests/module.c
new file mode 100644
index 0000000000..9ff7b2c123
--- /dev/null
+++ b/net/wireless/tests/module.c
@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * This is just module boilerplate for the cfg80211 kunit module.
+ *
+ * Copyright (C) 2023 Intel Corporation
+ */
+#include <linux/module.h>
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("tests for cfg80211");