From f4cdf7ca9a1fdcca413157df19753f388a5a224e Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Wed, 19 Aug 2026 10:09:22 -0700 Subject: Merge tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media Pull media updates from Mauro Carvalho Chehab: - v4l2-core: added ISP statistics support and per-block validation - v4l2-core: Allow unknown HDR10 white point and luminance - New camera sensors: Sony IMX678 and IMX471m, Himax HM1092 IR sensor - New codec: Milos: VPU v2.0 codec support - isp driver: gained support for Dreamchip RPPX1 ISP framework - vsp1 driver: gained support for RZ/T2H and RZ/N2H - Novalake driver: gained CVS support for new NVL hardware - dvb-core: fix feed leak on failed DMX_ADD_PID - several driver fixes, cleanups and minor improvements * tag 'media/v7.3-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (308 commits) media: ipu-bridge: check all DMI entries when overriding sensor rotation media: v4l2-async: avoid deleting unlinked ASC entry on link error media: rzg2l-cru: Align bytesperline to hardware DMA stride requirement media: intel/ipu6: fix async notifier cleanup leak on parse error media: staging/ipu7: fix async notifier UAF on probe error path media: amd: isp4: fix self-deadlock in isp4sd_pwron_and_init() error path media: amd: isp4: release partial allocations in isp4if_alloc_fw_gpumem() media: rcar-isp: Fix VSPX reference leaks media: rcar-isp: Release ISPCORE resources media: i2c: imx415: Release runtime PM reference on VBLANK error media: i2c: imx415: Return test pattern write errors media: renesas: vsp1: Declare index variables in for loop statement media: renesas: vsp1: Make reset control optional to support platforms without a reset line media: dt-bindings: media: renesas,vsp1: Document RZ/T2H and RZ/N2H SoCs media: dt-bindings: media: renesas,fcp: Document RZ/T2H and RZ/N2H SoCs media: nxp: imx8-isi: Add additional 32-bit RGB format support media: nxp: imx8-isi: Add 16-bit raw Bayer format support media: nxp: imx8-isi: Implement per-stream reference counting for multiplexed streams media: nxp: imx8-isi: Use BIT_ULL() for 64-bit stream masks media: nxp: imx8-isi: Correct color map between V4L2 and ISI ... --- net/wireless/tests/fragmentation.c | 177 +++++++++++++++++++++++++++++++++++++ 1 file changed, 177 insertions(+) create mode 100644 net/wireless/tests/fragmentation.c (limited to 'net/wireless/tests/fragmentation.c') 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 +#include +#include + +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); -- cgit v1.3.1