chan.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2/*
  3 * KUnit tests for channel helper functions
  4 *
  5 * Copyright (C) 2023-2024 Intel Corporation
  6 */
  7#include <net/cfg80211.h>
  8#include <kunit/test.h>
  9
 10MODULE_IMPORT_NS("EXPORTED_FOR_KUNIT_TESTING");
 11
 12static struct ieee80211_channel chan_6ghz_1 = {
 13	.band = NL80211_BAND_6GHZ,
 14	.center_freq = 5955,
 15};
 16
 17static struct ieee80211_channel chan_6ghz_5 = {
 18	.band = NL80211_BAND_6GHZ,
 19	.center_freq = 5975,
 20};
 21
 22static struct ieee80211_channel chan_6ghz_105 = {
 23	.band = NL80211_BAND_6GHZ,
 24	.center_freq = 6475,
 25};
 26
 27static const struct chandef_compat_case {
 28	const char *desc;
 29	/* leave c1 empty for tests for identical */
 30	struct cfg80211_chan_def c1, c2;
 31	/* we test both ways around, so c2 should always be the compat one */
 32	bool compat;
 33} chandef_compat_cases[] = {
 34	{
 35		.desc = "identical non-HT",
 36		.c2 = {
 37			.width = NL80211_CHAN_WIDTH_20_NOHT,
 38			.chan = &chan_6ghz_1,
 39			.center_freq1 = 5955,
 40		},
 41		.compat = true,
 42	},
 43	{
 44		.desc = "identical 20 MHz",
 45		.c2 = {
 46			.width = NL80211_CHAN_WIDTH_20,
 47			.chan = &chan_6ghz_1,
 48			.center_freq1 = 5955,
 49		},
 50		.compat = true,
 51	},
 52	{
 53		.desc = "identical 40 MHz",
 54		.c2 = {
 55			.width = NL80211_CHAN_WIDTH_40,
 56			.chan = &chan_6ghz_1,
 57			.center_freq1 = 5955 + 10,
 58		},
 59		.compat = true,
 60	},
 61	{
 62		.desc = "identical 80 MHz",
 63		.c2 = {
 64			.width = NL80211_CHAN_WIDTH_80,
 65			.chan = &chan_6ghz_1,
 66			.center_freq1 = 5955 + 10 + 20,
 67		},
 68		.compat = true,
 69	},
 70	{
 71		.desc = "identical 160 MHz",
 72		.c2 = {
 73			.width = NL80211_CHAN_WIDTH_160,
 74			.chan = &chan_6ghz_1,
 75			.center_freq1 = 5955 + 10 + 20 + 40,
 76		},
 77		.compat = true,
 78	},
 79	{
 80		.desc = "identical 320 MHz",
 81		.c2 = {
 82			.width = NL80211_CHAN_WIDTH_320,
 83			.chan = &chan_6ghz_1,
 84			.center_freq1 = 5955 + 10 + 20 + 40 + 80,
 85		},
 86		.compat = true,
 87	},
 88	{
 89		.desc = "20 MHz in 320 MHz\n",
 90		.c1 = {
 91			.width = NL80211_CHAN_WIDTH_20,
 92			.chan = &chan_6ghz_1,
 93			.center_freq1 = 5955,
 94		},
 95		.c2 = {
 96			.width = NL80211_CHAN_WIDTH_320,
 97			.chan = &chan_6ghz_1,
 98			.center_freq1 = 5955 + 10 + 20 + 40 + 80,
 99		},
100		.compat = true,
101	},
102	{
103		.desc = "different 20 MHz",
104		.c1 = {
105			.width = NL80211_CHAN_WIDTH_20,
106			.chan = &chan_6ghz_1,
107			.center_freq1 = 5955,
108		},
109		.c2 = {
110			.width = NL80211_CHAN_WIDTH_20,
111			.chan = &chan_6ghz_5,
112			.center_freq1 = 5975,
113		},
114	},
115	{
116		.desc = "different primary 320 MHz",
117		.c1 = {
118			.width = NL80211_CHAN_WIDTH_320,
119			.chan = &chan_6ghz_105,
120			.center_freq1 = 6475 + 110,
121		},
122		.c2 = {
123			.width = NL80211_CHAN_WIDTH_320,
124			.chan = &chan_6ghz_105,
125			.center_freq1 = 6475 - 50,
126		},
127	},
128	{
129		/* similar to previous test but one has lower BW */
130		.desc = "matching primary 160 MHz",
131		.c1 = {
132			.width = NL80211_CHAN_WIDTH_160,
133			.chan = &chan_6ghz_105,
134			.center_freq1 = 6475 + 30,
135		},
136		.c2 = {
137			.width = NL80211_CHAN_WIDTH_320,
138			.chan = &chan_6ghz_105,
139			.center_freq1 = 6475 - 50,
140		},
141		.compat = true,
142	},
143	{
144		.desc = "matching primary 160 MHz & punctured secondary 160 Mhz",
145		.c1 = {
146			.width = NL80211_CHAN_WIDTH_160,
147			.chan = &chan_6ghz_105,
148			.center_freq1 = 6475 + 30,
149		},
150		.c2 = {
151			.width = NL80211_CHAN_WIDTH_320,
152			.chan = &chan_6ghz_105,
153			.center_freq1 = 6475 - 50,
154			.punctured = 0xf,
155		},
156		.compat = true,
157	},
158	{
159		.desc = "matching primary 160 MHz & punctured matching",
160		.c1 = {
161			.width = NL80211_CHAN_WIDTH_160,
162			.chan = &chan_6ghz_105,
163			.center_freq1 = 6475 + 30,
164			.punctured = 0xc0,
165		},
166		.c2 = {
167			.width = NL80211_CHAN_WIDTH_320,
168			.chan = &chan_6ghz_105,
169			.center_freq1 = 6475 - 50,
170			.punctured = 0xc000,
171		},
172		.compat = true,
173	},
174	{
175		.desc = "matching primary 160 MHz & punctured not matching",
176		.c1 = {
177			.width = NL80211_CHAN_WIDTH_160,
178			.chan = &chan_6ghz_105,
179			.center_freq1 = 6475 + 30,
180			.punctured = 0x80,
181		},
182		.c2 = {
183			.width = NL80211_CHAN_WIDTH_320,
184			.chan = &chan_6ghz_105,
185			.center_freq1 = 6475 - 50,
186			.punctured = 0xc000,
187		},
188	},
189};
190
191KUNIT_ARRAY_PARAM_DESC(chandef_compat, chandef_compat_cases, desc)
192
193static void test_chandef_compat(struct kunit *test)
194{
195	const struct chandef_compat_case *params = test->param_value;
196	const struct cfg80211_chan_def *ret, *expect;
197	struct cfg80211_chan_def c1 = params->c1;
198
199	/* tests with identical ones */
200	if (!params->c1.chan)
201		c1 = params->c2;
202
203	KUNIT_EXPECT_EQ(test, cfg80211_chandef_valid(&c1), true);
204	KUNIT_EXPECT_EQ(test, cfg80211_chandef_valid(&params->c2), true);
205
206	expect = params->compat ? &params->c2 : NULL;
207
208	ret = cfg80211_chandef_compatible(&c1, &params->c2);
209	KUNIT_EXPECT_PTR_EQ(test, ret, expect);
210
211	if (!params->c1.chan)
212		expect = &c1;
213
214	ret = cfg80211_chandef_compatible(&params->c2, &c1);
215	KUNIT_EXPECT_PTR_EQ(test, ret, expect);
216}
217
218static struct kunit_case chandef_compat_test_cases[] = {
219	KUNIT_CASE_PARAM(test_chandef_compat, chandef_compat_gen_params),
220	{}
221};
222
223static struct kunit_suite chandef_compat = {
224	.name = "cfg80211-chandef-compat",
225	.test_cases = chandef_compat_test_cases,
226};
227
228kunit_test_suite(chandef_compat);