// SPDX-License-Identifier: GPL-2.0-only/* * KUnit tests for channel helper functions * * Copyright (C) 2023-2024, 2026 Intel Corporation */#include <net/cfg80211.h>#include <kunit/test.h> MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING"); static struct ieee80211_channel chan_2ghz_1 = {	.band = NL80211_BAND_2GHZ,	.center_freq = 2412,}; static struct ieee80211_channel chan_6ghz_1 = {	.band = NL80211_BAND_6GHZ,	.center_freq = 5955,}; static struct ieee80211_channel chan_6ghz_5 = {	.band = NL80211_BAND_6GHZ,	.center_freq = 5975,}; static struct ieee80211_channel chan_6ghz_105 = {	.band = NL80211_BAND_6GHZ,	.center_freq = 6475,}; static const struct chandef_compat_case {	const char *desc;	/* leave c1 empty for tests for identical */	struct cfg80211_chan_def c1, c2;	/* we test both ways around, so c2 should always be the compat one */	bool compat;} chandef_compat_cases[] = {	{		.desc = "identical non-HT",		.c2 = {			.width = NL80211_CHAN_WIDTH_20_NOHT,			.chan = &chan_6ghz_1,			.center_freq1 = 5955,		},		.compat = true,	},	{		.desc = "identical 20 MHz",		.c2 = {			.width = NL80211_CHAN_WIDTH_20,			.chan = &chan_6ghz_1,			.center_freq1 = 5955,		},		.compat = true,	},	{		.desc = "identical 40 MHz",		.c2 = {			.width = NL80211_CHAN_WIDTH_40,			.chan = &chan_6ghz_1,			.center_freq1 = 5955 + 10,		},		.compat = true,	},	{		.desc = "identical 80 MHz",		.c2 = {			.width = NL80211_CHAN_WIDTH_80,			.chan = &chan_6ghz_1,			.center_freq1 = 5955 + 10 + 20,		},		.compat = true,	},	{		.desc = "identical 160 MHz",		.c2 = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_1,			.center_freq1 = 5955 + 10 + 20 + 40,		},		.compat = true,	},	{		.desc = "identical 320 MHz",		.c2 = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_1,			.center_freq1 = 5955 + 10 + 20 + 40 + 80,		},		.compat = true,	},	{		.desc = "20 MHz in 320 MHz\n",		.c1 = {			.width = NL80211_CHAN_WIDTH_20,			.chan = &chan_6ghz_1,			.center_freq1 = 5955,		},		.c2 = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_1,			.center_freq1 = 5955 + 10 + 20 + 40 + 80,		},		.compat = true,	},	{		.desc = "different 20 MHz",		.c1 = {			.width = NL80211_CHAN_WIDTH_20,			.chan = &chan_6ghz_1,			.center_freq1 = 5955,		},		.c2 = {			.width = NL80211_CHAN_WIDTH_20,			.chan = &chan_6ghz_5,			.center_freq1 = 5975,		},	},	{		.desc = "different primary 320 MHz",		.c1 = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 110,		},		.c2 = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 - 50,		},	},	{		/* similar to previous test but one has lower BW */		.desc = "matching primary 160 MHz",		.c1 = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,		},		.c2 = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 - 50,		},		.compat = true,	},	{		.desc = "matching primary 160 MHz & punctured secondary 160 Mhz",		.c1 = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,		},		.c2 = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 - 50,			.punctured = 0xf,		},		.compat = true,	},	{		.desc = "matching primary 160 MHz & punctured matching",		.c1 = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0xc0,		},		.c2 = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 - 50,			.punctured = 0xc000,		},		.compat = true,	},	{		.desc = "matching primary 160 MHz & punctured not matching",		.c1 = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0x80,		},		.c2 = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 - 50,			.punctured = 0xc000,		},	},}; KUNIT_ARRAY_PARAM_DESC(chandef_compat, chandef_compat_cases, desc) static void test_chandef_compat(struct kunit *test){	const struct chandef_compat_case *params = test->param_value;	const struct cfg80211_chan_def *ret, *expect;	struct cfg80211_chan_def c1 = params->c1; 	/* tests with identical ones */	if (!params->c1.chan)		c1 = params->c2; 	KUNIT_EXPECT_EQ(test, cfg80211_chandef_valid(&c1), true);	KUNIT_EXPECT_EQ(test, cfg80211_chandef_valid(&params->c2), true); 	expect = params->compat ? &params->c2 : NULL; 	ret = cfg80211_chandef_compatible(&c1, &params->c2);	KUNIT_EXPECT_PTR_EQ(test, ret, expect); 	if (!params->c1.chan)		expect = &c1; 	ret = cfg80211_chandef_compatible(&params->c2, &c1);	KUNIT_EXPECT_PTR_EQ(test, ret, expect);} static const struct chandef_dbe_case {	const char *desc;	struct cfg80211_chan_def c;	u8 dbe[3];	bool fails;	u16 cf1;} chandef_dbe_cases[] = {	{		.desc = "non-HT failure",		.c = {			.width = NL80211_CHAN_WIDTH_20_NOHT,			.chan = &chan_6ghz_1,			.center_freq1 = 5955,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_40,		.fails = true,	},	{		.desc = "2.4 GHz fails",		.c = {			.width = NL80211_CHAN_WIDTH_20,			.chan = &chan_2ghz_1,			.center_freq1 = 2412,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_40,		.fails = true,	},	{		.desc = "DBE narrower",		.c = {			.width = NL80211_CHAN_WIDTH_320,			.chan = &chan_6ghz_1,			.center_freq1 = 5955 + 10 + 20 + 40 + 80,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_160,		.fails = true,	},	{		.desc = "DBE to 320-1",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_1,		.cf1 = 6425,	},	{		.desc = "DBE to 320-2",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_2,		.cf1 = 6585,	},	{		.desc = "bad disabled subchannel bitmap - not enough in BSS (1)",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0x0001,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_1 |			  IEEE80211_UHR_DBE_OPER_DIS_SUBCHANNEL_BITMAP_PRES,		/* DBE disabled subchannel bitmap == 0 */		.fails = true,	},	{		.desc = "bad disabled subchannel bitmap - too much in BSS (1)",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0x0001,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_1 |			  IEEE80211_UHR_DBE_OPER_DIS_SUBCHANNEL_BITMAP_PRES,		/* DBE disabled subchannel bitmap == 0x0300 */		.dbe[2] = 0x03,		.fails = true,	},	{		.desc = "bad disabled subchannel bitmap - not enough in BSS (2)",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0x0001,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_2 |			  IEEE80211_UHR_DBE_OPER_DIS_SUBCHANNEL_BITMAP_PRES,		/* DBE disabled subchannel bitmap == 0 */		.fails = true,	},	{		.desc = "bad disabled subchannel bitmap - too much in BSS (2)",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0x0001,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_2 |			  IEEE80211_UHR_DBE_OPER_DIS_SUBCHANNEL_BITMAP_PRES,		/* DBE disabled subchannel bitmap == 0x03 */		.dbe[1] = 0x03,		.fails = true,	},	{		.desc = "bad disabled subchannel bitmap - bad bitmap",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0x0001,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_1 |			  IEEE80211_UHR_DBE_OPER_DIS_SUBCHANNEL_BITMAP_PRES,		/* DBE disabled subchannel bitmap == 0x1100 */		.dbe[2] = 0x11,		.fails = true,	},	{		.desc = "good disabled subchannel bitmap (1)",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0x0003,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_1 |			  IEEE80211_UHR_DBE_OPER_DIS_SUBCHANNEL_BITMAP_PRES,		/* DBE disabled subchannel bitmap == 0x0300 */		.dbe[2] = 0x03,		.cf1 = 6425,	},	{		.desc = "good disabled subchannel bitmap (2)",		.c = {			.width = NL80211_CHAN_WIDTH_160,			.chan = &chan_6ghz_105,			.center_freq1 = 6475 + 30,			.punctured = 0x0003,		},		.dbe[0] = IEEE80211_UHR_DBE_OPER_BW_320_2 |			  IEEE80211_UHR_DBE_OPER_DIS_SUBCHANNEL_BITMAP_PRES,		/* DBE disabled subchannel bitmap == 0x0003 */		.dbe[1] = 0x03,		.cf1 = 6585,	},}; KUNIT_ARRAY_PARAM_DESC(chandef_dbe, chandef_dbe_cases, desc) static void test_chandef_dbe(struct kunit *test){	const struct chandef_dbe_case *params = test->param_value;	struct cfg80211_chan_def c = params->c;	int ret; 	KUNIT_EXPECT_EQ(test, cfg80211_chandef_valid(&params->c), true); 	ret = cfg80211_chandef_add_dbe(&c, (void *)params->dbe);	KUNIT_EXPECT_EQ(test, ret != 0, params->fails); 	if (params->fails)		return; 	KUNIT_EXPECT_EQ(test, c.center_freq1, params->cf1);} static struct kunit_case chandef_test_cases[] = {	KUNIT_CASE_PARAM(test_chandef_compat, chandef_compat_gen_params),	KUNIT_CASE_PARAM(test_chandef_dbe, chandef_dbe_gen_params),	{}}; static struct kunit_suite chandef = {	.name = "cfg80211-chandef",	.test_cases = chandef_test_cases,}; kunit_test_suite(chandef);